Diff of /trunk/grubby/grubby.c

Parent Directory | Revision Log | Patch

	revision 1855 by niro, Mon Jul 2 13:13:03 2012 UTC	revision 3150 by niro, Tue Jul 7 11:24:19 2020 UTC
#	Line 36	Line 36
36	#include <signal.h>	#include <signal.h>
37	#include <blkid/blkid.h>	#include <blkid/blkid.h>
38
39		#include "log.h"
40
41	#ifndef DEBUG	#ifndef DEBUG
42	#define DEBUG 0	#define DEBUG 0
43	#endif	#endif
#	Line 46	Line 48
48	#define dbgPrintf(format, args...)	#define dbgPrintf(format, args...)
49	#endif	#endif
50
51	int debug = 0; /* Currently just for template debugging */	int debug = 0; /* Currently just for template debugging */
52
53	#define _(A) (A)	#define _(A) (A)
54
#	Line 56  int debug = 0; /* Currently just for tem	Line 58  int debug = 0; /* Currently just for tem
58	#define NOOP_OPCODE 0x90	#define NOOP_OPCODE 0x90
59	#define JMP_SHORT_OPCODE 0xeb	#define JMP_SHORT_OPCODE 0xeb
60
61		int isEfi = 0;
62
63		#if defined(__aarch64__)
64		#define isEfiOnly 1
65		#else
66		#define isEfiOnly 0
67		#endif
68
69		char *saved_command_line = NULL;
70
71		const char *mounts = "/proc/mounts";
72
73	/* comments get lumped in with indention */	/* comments get lumped in with indention */
74	struct lineElement {	struct lineElement {
75	char * item;	char *item;
76	char * indent;	char *indent;
77	};	};
78
79	enum lineType_e {	enum lineType_e {
80	LT_WHITESPACE   = 1 << 0,	LT_UNIDENTIFIED = 0,
81	LT_TITLE        = 1 << 1,	LT_WHITESPACE = 1 << 0,
82	LT_KERNEL       = 1 << 2,	LT_TITLE = 1 << 1,
83	LT_INITRD       = 1 << 3,	LT_KERNEL = 1 << 2,
84	LT_HYPER        = 1 << 4,	LT_INITRD = 1 << 3,
85	LT_DEFAULT      = 1 << 5,	LT_HYPER = 1 << 4,
86	LT_MBMODULE     = 1 << 6,	LT_DEFAULT = 1 << 5,
87	LT_ROOT         = 1 << 7,	LT_MBMODULE = 1 << 6,
88	LT_FALLBACK     = 1 << 8,	LT_ROOT = 1 << 7,
89	LT_KERNELARGS   = 1 << 9,	LT_FALLBACK = 1 << 8,
90	LT_BOOT         = 1 << 10,	LT_KERNELARGS = 1 << 9,
91	LT_BOOTROOT     = 1 << 11,	LT_BOOT = 1 << 10,
92	LT_LBA          = 1 << 12,	LT_BOOTROOT = 1 << 11,
93	LT_OTHER        = 1 << 13,	LT_LBA = 1 << 12,
94	LT_GENERIC      = 1 << 14,	LT_OTHER = 1 << 13,
95	LT_ECHO    = 1 << 16,	LT_GENERIC = 1 << 14,
96	LT_MENUENTRY    = 1 << 17,	LT_ECHO = 1 << 16,
97	LT_ENTRY_END    = 1 << 18,	LT_MENUENTRY = 1 << 17,
98	LT_SET_VARIABLE = 1 << 19,	LT_ENTRY_END = 1 << 18,
99	LT_UNKNOWN      = 1 << 20,	LT_SET_VARIABLE = 1 << 19,
100		LT_KERNEL_EFI = 1 << 20,
101		LT_INITRD_EFI = 1 << 21,
102		LT_KERNEL_16 = 1 << 22,
103		LT_INITRD_16 = 1 << 23,
104		LT_DEVTREE = 1 << 24,
105		LT_UNKNOWN = 1 << 25,
106	};	};
107
108	struct singleLine {	struct singleLine {
109	char * indent;	char *indent;
110	int numElements;	int numElements;
111	struct lineElement * elements;	struct lineElement *elements;
112	struct singleLine * next;	struct singleLine *next;
113	enum lineType_e type;	enum lineType_e type;
114	};	};
115
116	struct singleEntry {	struct singleEntry {
117	struct singleLine * lines;	struct singleLine *lines;
118	int skip;	int skip;
119	int multiboot;	int multiboot;
120	struct singleEntry * next;	struct singleEntry *next;
121	};	};
122
123	#define GRUBBY_BADIMAGE_OKAY (1 << 0)	#define GRUBBY_BADIMAGE_OKAY (1 << 0)
#	Line 111  struct singleEntry {	Line 131  struct singleEntry {
131	#define NEED_ARGS    (1 << 3)	#define NEED_ARGS    (1 << 3)
132	#define NEED_MB      (1 << 4)	#define NEED_MB      (1 << 4)
133	#define NEED_END     (1 << 5)	#define NEED_END     (1 << 5)
134		#define NEED_DEVTREE (1 << 6)
135
136	#define MAIN_DEFAULT    (1 << 0)	#define MAIN_DEFAULT    (1 << 0)
137		#define FIRST_ENTRY_INDEX    0 /* boot entry index value begin and increment
138		from this initial value */
139		#define NO_DEFAULT_ENTRY    -1 /* indicates that no specific default boot
140		entry was set or currently exists */
141	#define DEFAULT_SAVED       -2	#define DEFAULT_SAVED       -2
142	#define DEFAULT_SAVED_GRUB2 -3	#define DEFAULT_SAVED_GRUB2 -3
143
144	struct keywordTypes {	struct keywordTypes {
145	char * key;	char *key;
146	enum lineType_e type;	enum lineType_e type;
147	char nextChar;	char nextChar;
148	char separatorChar;	char separatorChar;
149	};	};
150
151	struct configFileInfo;	struct configFileInfo;
152
153	typedef const char *(*findConfigFunc)(struct configFileInfo *);	typedef const char *(*findConfigFunc) (struct configFileInfo *);
154	typedef const int (*writeLineFunc)(struct configFileInfo *,	typedef const int (*writeLineFunc) (struct configFileInfo *,
155	struct singleLine *line);	struct singleLine * line);
156		typedef char *(*getEnvFunc) (struct configFileInfo *, char *name);
157		typedef int (*setEnvFunc) (struct configFileInfo *, char *name, char *value);
158
159	struct configFileInfo {	struct configFileInfo {
160	char * defaultConfig;	char *defaultConfig;
161	findConfigFunc findConfig;	findConfigFunc findConfig;
162	writeLineFunc writeLine;	writeLineFunc writeLine;
163	struct keywordTypes * keywords;	getEnvFunc getEnv;
164	int defaultIsIndex;	setEnvFunc setEnv;
165	int defaultIsVariable;	struct keywordTypes *keywords;
166	int defaultSupportSaved;	int caseInsensitive;
167	enum lineType_e entryStart;	int defaultIsIndex;
168	enum lineType_e entryEnd;	int defaultIsVariable;
169	int needsBootPrefix;	int defaultSupportSaved;
170	int argsInQuotes;	int defaultIsSaved;
171	int maxTitleLength;	int defaultIsUnquoted;
172	int titleBracketed;	enum lineType_e entryStart;
173	int titlePosition;	enum lineType_e entryEnd;
174	int mbHyperFirst;	int needsBootPrefix;
175	int mbInitRdIsModule;	int argsInQuotes;
176	int mbConcatArgs;	int maxTitleLength;
177	int mbAllowExtraInitRds;	int titleBracketed;
178		int titlePosition;
179		int mbHyperFirst;
180		int mbInitRdIsModule;
181		int mbConcatArgs;
182		int mbAllowExtraInitRds;
183		char *envFile;
184	};	};
185
186	struct keywordTypes grubKeywords[] = {	struct keywordTypes grubKeywords[] = {
187	{ "title",    LT_TITLE,    ' ' },	{"title", LT_TITLE, ' '},
188	{ "root",    LT_BOOTROOT,    ' ' },	{"root", LT_BOOTROOT, ' '},
189	{ "default",    LT_DEFAULT,    ' ' },	{"default", LT_DEFAULT, ' '},
190	{ "fallback",   LT_FALLBACK,    ' ' },	{"fallback", LT_FALLBACK, ' '},
191	{ "kernel",    LT_KERNEL,    ' ' },	{"kernel", LT_KERNEL, ' '},
192	{ "initrd",    LT_INITRD,    ' ', ' ' },	{"initrd", LT_INITRD, ' ', ' '},
193	{ "module",     LT_MBMODULE,    ' ' },	{"module", LT_MBMODULE, ' '},
194	{ "kernel",     LT_HYPER,       ' ' },	{"kernel", LT_HYPER, ' '},
195	{ NULL,    0, 0 },	{NULL, 0, 0},
196	};	};
197
198	const char *grubFindConfig(struct configFileInfo *cfi) {	const char *grubFindConfig(struct configFileInfo *cfi)
199	static const char *configFiles[] = {	{
200	"/boot/grub/grub.conf",	static const char *configFiles[] = {
201	"/boot/grub/menu.lst",	"/boot/grub/grub.conf",
202	"/etc/grub.conf",	"/boot/grub/menu.lst",
203	NULL	"/etc/grub.conf",
204	};	NULL
205	static int i = -1;	};
206		static int i = -1;
207	if (i == -1) {
208	for (i = 0; configFiles[i] != NULL; i++) {	if (i == -1) {
209	dbgPrintf("Checking \"%s\": ", configFiles[i]);	for (i = 0; configFiles[i] != NULL; i++) {
210	if (!access(configFiles[i], R_OK)) {	dbgPrintf("Checking \"%s\": ", configFiles[i]);
211	dbgPrintf("found\n");	if (!access(configFiles[i], R_OK)) {
212	return configFiles[i];	dbgPrintf("found\n");
213	}	return configFiles[i];
214	dbgPrintf("not found\n");	}
215		dbgPrintf("not found\n");
216		}
217	}	}
218	}	return configFiles[i];
	return configFiles[i];
219	}	}
220
221	struct configFileInfo grubConfigType = {	struct configFileInfo grubConfigType = {
222	.findConfig = grubFindConfig,	.findConfig = grubFindConfig,
223	.keywords = grubKeywords,	.keywords = grubKeywords,
224	.defaultIsIndex = 1,	.defaultIsIndex = 1,
225	.defaultSupportSaved = 1,	.defaultSupportSaved = 1,
226	.entryStart = LT_TITLE,	.entryStart = LT_TITLE,
227	.needsBootPrefix = 1,	.needsBootPrefix = 1,
228	.mbHyperFirst = 1,	.mbHyperFirst = 1,
229	.mbInitRdIsModule = 1,	.mbInitRdIsModule = 1,
230	.mbAllowExtraInitRds = 1,	.mbAllowExtraInitRds = 1,
231		.titlePosition = 1,
232	};	};
233
234	struct keywordTypes grub2Keywords[] = {	struct keywordTypes grub2Keywords[] = {
235	{ "menuentry",  LT_MENUENTRY,   ' ' },	{"menuentry", LT_MENUENTRY, ' '},
236	{ "}",          LT_ENTRY_END,   ' ' },	{"}", LT_ENTRY_END, ' '},
237	{ "echo",       LT_ECHO,        ' ' },	{"echo", LT_ECHO, ' '},
238	{ "set",        LT_SET_VARIABLE,' ', '=' },	{"set", LT_SET_VARIABLE, ' ', '='},
239	{ "root",       LT_BOOTROOT,    ' ' },	{"root", LT_BOOTROOT, ' '},
240	{ "default",    LT_DEFAULT,     ' ' },	{"default", LT_DEFAULT, ' '},
241	{ "fallback",   LT_FALLBACK,    ' ' },	{"fallback", LT_FALLBACK, ' '},
242	{ "linux",      LT_KERNEL,      ' ' },	{"linux", LT_KERNEL, ' '},
243	{ "initrd",     LT_INITRD,      ' ', ' ' },	{"linuxefi", LT_KERNEL_EFI, ' '},
244	{ "module",     LT_MBMODULE,    ' ' },	{"linux16", LT_KERNEL_16, ' '},
245	{ "kernel",     LT_HYPER,       ' ' },	{"initrd", LT_INITRD, ' ', ' '},
246	{ NULL, 0, 0 },	{"initrdefi", LT_INITRD_EFI, ' ', ' '},
247		{"initrd16", LT_INITRD_16, ' ', ' '},
248		{"module", LT_MBMODULE, ' '},
249		{"kernel", LT_HYPER, ' '},
250		{"devicetree", LT_DEVTREE, ' '},
251		{NULL, 0, 0},
252	};	};
253
254	const char *grub2FindConfig(struct configFileInfo *cfi) {	const char *grub2FindConfig(struct configFileInfo *cfi)
255	static const char *configFiles[] = {	{
256	"/boot/grub/grub-efi.cfg",	static const char *configFiles[] = {
257	"/boot/grub/grub.cfg",	"/boot/grub/grub-efi.cfg",
258	NULL	"/boot/grub/grub.cfg",
259	};	"/etc/grub2-efi.cfg",
260	static int i = -1;	"/etc/grub2.cfg",
261	static const char *grub_cfg = "/boot/grub/grub.cfg";	"/boot/grub2/grub.cfg",
262		"/boot/grub2-efi/grub.cfg",
263	if (i == -1) {	NULL
264	for (i = 0; configFiles[i] != NULL; i++) {	};
265	dbgPrintf("Checking \"%s\": ", configFiles[i]);	static int i = -1;
266	if (!access(configFiles[i], R_OK)) {	static const char *grub_cfg = "/boot/grub/grub.cfg";
267		int rc = -1;
268
269		if (i == -1) {
270		for (i = 0; configFiles[i] != NULL; i++) {
271		dbgPrintf("Checking \"%s\": ", configFiles[i]);
272		if ((rc = access(configFiles[i], R_OK))) {
273		if (errno == EACCES) {
274		printf
275		("Unable to access bootloader configuration file "
276		"\"%s\": %m\n", configFiles[i]);
277		exit(1);
278		}
279		continue;
280		} else {
281		dbgPrintf("found\n");
282		return configFiles[i];
283		}
284		}
285		}
286
287		/* Ubuntu renames grub2 to grub, so check for the grub.d directory
288		* that isn't in grub1, and if it exists, return the config file path
289		* that they use. */
290		if (configFiles[i] == NULL && !access("/etc/grub.d/", R_OK)) {
291	dbgPrintf("found\n");	dbgPrintf("found\n");
292	return configFiles[i];	return grub_cfg;
	}
293	}	}
	}
294
295	/* Ubuntu renames grub2 to grub, so check for the grub.d directory	dbgPrintf("not found\n");
296	* that isn't in grub1, and if it exists, return the config file path	return configFiles[i];
297	* that they use. */	}
298	if (configFiles[i] == NULL && !access("/etc/grub.d/", R_OK)) {
299	dbgPrintf("found\n");	/* kind of hacky.  It'll give the first 1024 bytes, ish. */
300	return grub_cfg;	static char *grub2GetEnv(struct configFileInfo *info, char *name)
301	}	{
302		static char buf[1025];
303		char *s = NULL;
304		char *ret = NULL;
305		char *envFile = info->envFile ? info->envFile : "/boot/grub/grubenv";
306		int rc =
307		asprintf(&s, "grub-editenv %s list | grep '^%s='", envFile, name);
308
309		if (rc < 0)
310		return NULL;
311
312		FILE *f = popen(s, "r");
313		if (!f)
314		goto out;
315
316		memset(buf, '\0', sizeof(buf));
317		ret = fgets(buf, 1024, f);
318		pclose(f);
319
320		if (ret) {
321		ret += strlen(name) + 1;
322		ret[strlen(ret) - 1] = '\0';
323		}
324		dbgPrintf("grub2GetEnv(%s): %s\n", name, ret);
325		out:
326		free(s);
327		return ret;
328		}
329
330		static int sPopCount(const char *s, const char *c)
331		{
332		int ret = 0;
333		if (!s)
334		return -1;
335		for (int i = 0; s[i] != '\0'; i++)
336		for (int j = 0; c[j] != '\0'; j++)
337		if (s[i] == c[j])
338		ret++;
339		return ret;
340		}
341
342		static char *shellEscape(const char *s)
343		{
344		int l = strlen(s) + sPopCount(s, "'") * 2;
345
346		char *ret = calloc(l + 1, sizeof(*ret));
347		if (!ret)
348		return NULL;
349		for (int i = 0, j = 0; s[i] != '\0'; i++, j++) {
350		if (s[i] == '\'')
351		ret[j++] = '\\';
352		ret[j] = s[i];
353		}
354		return ret;
355		}
356
357	dbgPrintf("not found\n");	static void unquote(char *s)
358	return configFiles[i];	{
359		int l = strlen(s);
360
361		if ((s[l - 1] == '\'' && s[0] == '\'')
362		|| (s[l - 1] == '"' && s[0] == '"')) {
363		memmove(s, s + 1, l - 2);
364		s[l - 2] = '\0';
365		}
366		}
367
368		static int grub2SetEnv(struct configFileInfo *info, char *name, char *value)
369		{
370		char *s = NULL;
371		int rc = 0;
372		char *envFile = info->envFile ? info->envFile : "/boot/grub/grubenv";
373
374		unquote(value);
375		value = shellEscape(value);
376		if (!value)
377		return -1;
378
379		rc = asprintf(&s, "grub-editenv %s set '%s=%s'", envFile, name, value);
380		free(value);
381		if (rc < 0)
382		return -1;
383
384		dbgPrintf("grub2SetEnv(%s): %s\n", name, s);
385		rc = system(s);
386		free(s);
387		return rc;
388		}
389
390		/* this is a gigantic hack to avoid clobbering grub2 variables... */
391		static int is_special_grub2_variable(const char *name)
392		{
393		if (!strcmp(name, "\"${next_entry}\""))
394		return 1;
395		if (!strcmp(name, "\"${prev_saved_entry}\""))
396		return 1;
397		return 0;
398	}	}
399
400	int sizeOfSingleLine(struct singleLine * line) {	int sizeOfSingleLine(struct singleLine *line)
401	int count = 0;	{
402		int count = 0;
403
404	for (int i = 0; i < line->numElements; i++) {	for (int i = 0; i < line->numElements; i++) {
405	int indentSize = 0;	int indentSize = 0;
406
407	count = count + strlen(line->elements[i].item);	count = count + strlen(line->elements[i].item);
408
409	indentSize = strlen(line->elements[i].indent);	indentSize = strlen(line->elements[i].indent);
410	if (indentSize > 0)	if (indentSize > 0)
411	count = count + indentSize;	count = count + indentSize;
412	else	else
413	/* be extra safe and add room for whitespaces */	/* be extra safe and add room for whitespaces */
414	count = count + 1;	count = count + 1;
415	}	}
416
417	/* room for trailing terminator */	/* room for trailing terminator */
418	count = count + 1;	count = count + 1;
419
420	return count;	return count;
421	}	}
422
423	static int isquote(char q)	static int isquote(char q)
424	{	{
425	if (q == '\'' || q == '\"')	if (q == '\'' || q == '\"')
426	return 1;	return 1;
427	return 0;	return 0;
428	}	}
429
430	char *grub2ExtractTitle(struct singleLine * line) {	static int iskernel(enum lineType_e type)
431	char * current;	{
432	char * current_indent;	return (type == LT_KERNEL || type == LT_KERNEL_EFI
433	int current_len;	|| type == LT_KERNEL_16);
434	int current_indent_len;	}
435	int i;
436		static int isinitrd(enum lineType_e type)
437	/* bail out if line does not start with menuentry */	{
438	if (strcmp(line->elements[0].item, "menuentry"))	return (type == LT_INITRD || type == LT_INITRD_EFI
439	return NULL;	|| type == LT_INITRD_16);
440		}
441	i = 1;
442	current = line->elements[i].item;	char *grub2ExtractTitle(struct singleLine *line)
443	current_len = strlen(current);	{
444		char *current;
445	/* if second word is quoted, strip the quotes and return single word */	char *current_indent;
446	if (isquote(*current) && isquote(current[current_len - 1])) {	int current_len;
447	char *tmp;	int current_indent_len;
448		int i;
449	tmp = strdup(current);
450	*(tmp + current_len - 1) = '\0';	/* bail out if line does not start with menuentry */
451	return ++tmp;	if (strcmp(line->elements[0].item, "menuentry"))
452	}	return NULL;
453
454	/* if no quotes, return second word verbatim */	i = 1;
	if (!isquote(*current))
	return current;
	/* second element start with a quote, so we have to find the element
	* whose last character is also quote (assuming it's the closing one) */
	int resultMaxSize;
	char * result;
	resultMaxSize = sizeOfSingleLine(line);
	result = malloc(resultMaxSize);
	snprintf(result, resultMaxSize, "%s", ++current);
	i++;
	for (; i < line->numElements; ++i) {
455	current = line->elements[i].item;	current = line->elements[i].item;
456	current_len = strlen(current);	current_len = strlen(current);
	current_indent = line->elements[i].indent;
	current_indent_len = strlen(current_indent);
457
458	strncat(result, current_indent, current_indent_len);	/* if second word is quoted, strip the quotes and return single word */
459	if (!isquote(current[current_len-1])) {	if (isquote(*current) && isquote(current[current_len - 1])) {
460	strncat(result, current, current_len);	char *tmp;
461	} else {
462	strncat(result, current, current_len - 1);	tmp = strdup(current + 1);
463	break;	if (!tmp)
464		return NULL;
465		tmp[strlen(tmp) - 1] = '\0';
466		return tmp;
467		}
468
469		/* if no quotes, return second word verbatim */
470		if (!isquote(*current))
471		return current;
472
473		/* second element start with a quote, so we have to find the element
474		* whose last character is also quote (assuming it's the closing one) */
475		int resultMaxSize;
476		char *result;
477		/* need to ensure that ' does not match " as we search */
478		char quote_char = *current;
479
480		resultMaxSize = sizeOfSingleLine(line);
481		result = malloc(resultMaxSize);
482		snprintf(result, resultMaxSize, "%s", ++current);
483
484		i++;
485		int result_len = 0;
486		for (; i < line->numElements; ++i) {
487		current = line->elements[i].item;
488		current_len = strlen(current);
489		current_indent = line->elements[i].indent;
490		current_indent_len = strlen(current_indent);
491
492		memcpy(result + result_len, current_indent, current_indent_len);
493		result_len += current_indent_len;
494
495		if (current[current_len - 1] != quote_char) {
496		memcpy(result + result_len, current_indent,
497		current_indent_len);
498		result_len += current_len;
499		} else {
500		memcpy(result + result_len, current_indent,
501		current_indent_len);
502		result_len += (current_len - 1);
503		break;
504		}
505	}	}
506	}	result[result_len] = '\0';
507	return result;	return result;
508	}	}
509
510	struct configFileInfo grub2ConfigType = {	struct configFileInfo grub2ConfigType = {
511	.findConfig = grub2FindConfig,	.findConfig = grub2FindConfig,
512	.keywords = grub2Keywords,	.getEnv = grub2GetEnv,
513	.defaultIsIndex = 1,	.setEnv = grub2SetEnv,
514	.defaultSupportSaved = 1,	.keywords = grub2Keywords,
515	.defaultIsVariable = 1,	.defaultIsIndex = 1,
516	.entryStart = LT_MENUENTRY,	.defaultSupportSaved = 1,
517	.entryEnd = LT_ENTRY_END,	.defaultIsVariable = 1,
518	.titlePosition = 1,	.entryStart = LT_MENUENTRY,
519	.needsBootPrefix = 1,	.entryEnd = LT_ENTRY_END,
520	.mbHyperFirst = 1,	.titlePosition = 1,
521	.mbInitRdIsModule = 1,	.needsBootPrefix = 1,
522	.mbAllowExtraInitRds = 1,	.mbHyperFirst = 1,
523		.mbInitRdIsModule = 1,
524		.mbAllowExtraInitRds = 1,
525	};	};
526
527	struct keywordTypes yabootKeywords[] = {	struct keywordTypes yabootKeywords[] = {
528	{ "label",    LT_TITLE,    '=' },	{"label", LT_TITLE, '='},
529	{ "root",    LT_ROOT,    '=' },	{"root", LT_ROOT, '='},
530	{ "default",    LT_DEFAULT,    '=' },	{"default", LT_DEFAULT, '='},
531	{ "image",    LT_KERNEL,    '=' },	{"image", LT_KERNEL, '='},
532	{ "bsd",    LT_GENERIC,    '=' },	{"bsd", LT_GENERIC, '='},
533	{ "macos",    LT_GENERIC,    '=' },	{"macos", LT_GENERIC, '='},
534	{ "macosx",    LT_GENERIC,    '=' },	{"macosx", LT_GENERIC, '='},
535	{ "magicboot",  LT_GENERIC,    '=' },	{"magicboot", LT_GENERIC, '='},
536	{ "darwin",    LT_GENERIC,    '=' },	{"darwin", LT_GENERIC, '='},
537	{ "timeout",    LT_GENERIC,    '=' },	{"timeout", LT_GENERIC, '='},
538	{ "install",    LT_GENERIC,    '=' },	{"install", LT_GENERIC, '='},
539	{ "fstype",    LT_GENERIC,    '=' },	{"fstype", LT_GENERIC, '='},
540	{ "hfstype",    LT_GENERIC,    '=' },	{"hfstype", LT_GENERIC, '='},
541	{ "delay",    LT_GENERIC,    '=' },	{"delay", LT_GENERIC, '='},
542	{ "defaultos",  LT_GENERIC,     '=' },	{"defaultos", LT_GENERIC, '='},
543	{ "init-message", LT_GENERIC,   '=' },	{"init-message", LT_GENERIC, '='},
544	{ "enablecdboot", LT_GENERIC,   ' ' },	{"enablecdboot", LT_GENERIC, ' '},
545	{ "enableofboot", LT_GENERIC,   ' ' },	{"enableofboot", LT_GENERIC, ' '},
546	{ "enablenetboot", LT_GENERIC,  ' ' },	{"enablenetboot", LT_GENERIC, ' '},
547	{ "nonvram",    LT_GENERIC,    ' ' },	{"nonvram", LT_GENERIC, ' '},
548	{ "hide",    LT_GENERIC,    ' ' },	{"hide", LT_GENERIC, ' '},
549	{ "protect",    LT_GENERIC,    ' ' },	{"protect", LT_GENERIC, ' '},
550	{ "nobless",    LT_GENERIC,    ' ' },	{"nobless", LT_GENERIC, ' '},
551	{ "nonvram",    LT_GENERIC,    ' ' },	{"nonvram", LT_GENERIC, ' '},
552	{ "brokenosx",  LT_GENERIC,    ' ' },	{"brokenosx", LT_GENERIC, ' '},
553	{ "usemount",   LT_GENERIC,    ' ' },	{"usemount", LT_GENERIC, ' '},
554	{ "mntpoint",   LT_GENERIC,    '=' },	{"mntpoint", LT_GENERIC, '='},
555	{ "partition",  LT_GENERIC,    '=' },	{"partition", LT_GENERIC, '='},
556	{ "device",    LT_GENERIC,    '=' },	{"device", LT_GENERIC, '='},
557	{ "fstype",    LT_GENERIC,    '=' },	{"fstype", LT_GENERIC, '='},
558	{ "initrd",    LT_INITRD,    '=', ';' },	{"initrd", LT_INITRD, '=', ';'},
559	{ "append",    LT_KERNELARGS,  '=' },	{"append", LT_KERNELARGS, '='},
560	{ "boot",    LT_BOOT,    '=' },	{"boot", LT_BOOT, '='},
561	{ "lba",    LT_LBA,    ' ' },	{"lba", LT_LBA, ' '},
562	{ NULL,    0, 0 },	{NULL, 0, 0},
563	};	};
564
565	struct keywordTypes liloKeywords[] = {	struct keywordTypes liloKeywords[] = {
566	{ "label",    LT_TITLE,    '=' },	{"label", LT_TITLE, '='},
567	{ "root",    LT_ROOT,    '=' },	{"root", LT_ROOT, '='},
568	{ "default",    LT_DEFAULT,    '=' },	{"default", LT_DEFAULT, '='},
569	{ "image",    LT_KERNEL,    '=' },	{"image", LT_KERNEL, '='},
570	{ "other",    LT_OTHER,    '=' },	{"other", LT_OTHER, '='},
571	{ "initrd",    LT_INITRD,    '=' },	{"initrd", LT_INITRD, '='},
572	{ "append",    LT_KERNELARGS,  '=' },	{"append", LT_KERNELARGS, '='},
573	{ "boot",    LT_BOOT,    '=' },	{"boot", LT_BOOT, '='},
574	{ "lba",    LT_LBA,    ' ' },	{"lba", LT_LBA, ' '},
575	{ NULL,    0, 0 },	{NULL, 0, 0},
576	};	};
577
578	struct keywordTypes eliloKeywords[] = {	struct keywordTypes eliloKeywords[] = {
579	{ "label",    LT_TITLE,    '=' },	{"label", LT_TITLE, '='},
580	{ "root",    LT_ROOT,    '=' },	{"root", LT_ROOT, '='},
581	{ "default",    LT_DEFAULT,    '=' },	{"default", LT_DEFAULT, '='},
582	{ "image",    LT_KERNEL,    '=' },	{"image", LT_KERNEL, '='},
583	{ "initrd",    LT_INITRD,    '=' },	{"initrd", LT_INITRD, '='},
584	{ "append",    LT_KERNELARGS,  '=' },	{"append", LT_KERNELARGS, '='},
585	{ "vmm",    LT_HYPER,       '=' },	{"vmm", LT_HYPER, '='},
586	{ NULL,    0, 0 },	{NULL, 0, 0},
587	};	};
588
589	struct keywordTypes siloKeywords[] = {	struct keywordTypes siloKeywords[] = {
590	{ "label",    LT_TITLE,    '=' },	{"label", LT_TITLE, '='},
591	{ "root",    LT_ROOT,    '=' },	{"root", LT_ROOT, '='},
592	{ "default",    LT_DEFAULT,    '=' },	{"default", LT_DEFAULT, '='},
593	{ "image",    LT_KERNEL,    '=' },	{"image", LT_KERNEL, '='},
594	{ "other",    LT_OTHER,    '=' },	{"other", LT_OTHER, '='},
595	{ "initrd",    LT_INITRD,    '=' },	{"initrd", LT_INITRD, '='},
596	{ "append",    LT_KERNELARGS,  '=' },	{"append", LT_KERNELARGS, '='},
597	{ "boot",    LT_BOOT,    '=' },	{"boot", LT_BOOT, '='},
598	{ NULL,    0, 0 },	{NULL, 0, 0},
599	};	};
600
601	struct keywordTypes ziplKeywords[] = {	struct keywordTypes ziplKeywords[] = {
602	{ "target",     LT_BOOTROOT,    '=' },	{"target", LT_BOOTROOT, '='},
603	{ "image",      LT_KERNEL,      '=' },	{"image", LT_KERNEL, '='},
604	{ "ramdisk",    LT_INITRD,      '=' },	{"ramdisk", LT_INITRD, '='},
605	{ "parameters", LT_KERNELARGS,  '=' },	{"parameters", LT_KERNELARGS, '='},
606	{ "default",    LT_DEFAULT,     '=' },	{"default", LT_DEFAULT, '='},
607	{ NULL,         0, 0 },	{NULL, 0, 0},
608	};	};
609
610	struct keywordTypes extlinuxKeywords[] = {	struct keywordTypes extlinuxKeywords[] = {
611	{ "label",    LT_TITLE,    ' ' },	{"label", LT_TITLE, ' '},
612	{ "root",    LT_ROOT,    ' ' },	{"root", LT_ROOT, ' '},
613	{ "default",    LT_DEFAULT,    ' ' },	{"default", LT_DEFAULT, ' '},
614	{ "kernel",    LT_KERNEL,    ' ' },	{"kernel", LT_KERNEL, ' '},
615	{ "initrd",    LT_INITRD,      ' ', ',' },	{"initrd", LT_INITRD, ' ', ','},
616	{ "append",    LT_KERNELARGS,  ' ' },	{"append", LT_KERNELARGS, ' '},
617	{ "prompt",     LT_UNKNOWN,     ' ' },	{"prompt", LT_UNKNOWN, ' '},
618	{ NULL,    0, 0 },	{"fdt", LT_DEVTREE, ' '},
619		{"fdtdir", LT_DEVTREE, ' '},
620		{NULL, 0, 0},
621	};	};
622
623	int useextlinuxmenu;	int useextlinuxmenu;
624	struct configFileInfo eliloConfigType = {	struct configFileInfo eliloConfigType = {
625	.defaultConfig = "/boot/efi/EFI/redhat/elilo.conf",	.defaultConfig = "/boot/efi/EFI/redhat/elilo.conf",
626	.keywords = eliloKeywords,	.keywords = eliloKeywords,
627	.entryStart = LT_KERNEL,	.entryStart = LT_KERNEL,
628	.needsBootPrefix = 1,	.needsBootPrefix = 1,
629	.argsInQuotes = 1,	.argsInQuotes = 1,
630	.mbConcatArgs = 1,	.mbConcatArgs = 1,
631		.titlePosition = 1,
632	};	};
633
634	struct configFileInfo liloConfigType = {	struct configFileInfo liloConfigType = {
635	.defaultConfig = "/etc/lilo.conf",	.defaultConfig = "/etc/lilo.conf",
636	.keywords = liloKeywords,	.keywords = liloKeywords,
637	.entryStart = LT_KERNEL,	.entryStart = LT_KERNEL,
638	.argsInQuotes = 1,	.argsInQuotes = 1,
639	.maxTitleLength = 15,	.maxTitleLength = 15,
640		.titlePosition = 1,
641	};	};
642
643	struct configFileInfo yabootConfigType = {	struct configFileInfo yabootConfigType = {
644	.defaultConfig = "/etc/yaboot.conf",	.defaultConfig = "/etc/yaboot.conf",
645	.keywords = yabootKeywords,	.keywords = yabootKeywords,
646	.entryStart = LT_KERNEL,	.entryStart = LT_KERNEL,
647	.needsBootPrefix = 1,	.needsBootPrefix = 1,
648	.argsInQuotes = 1,	.argsInQuotes = 1,
649	.maxTitleLength = 15,	.maxTitleLength = 15,
650	.mbAllowExtraInitRds = 1,	.mbAllowExtraInitRds = 1,
651		.titlePosition = 1,
652	};	};
653
654	struct configFileInfo siloConfigType = {	struct configFileInfo siloConfigType = {
655	.defaultConfig = "/etc/silo.conf",	.defaultConfig = "/etc/silo.conf",
656	.keywords = siloKeywords,	.keywords = siloKeywords,
657	.entryStart = LT_KERNEL,	.entryStart = LT_KERNEL,
658	.needsBootPrefix = 1,	.needsBootPrefix = 1,
659	.argsInQuotes = 1,	.argsInQuotes = 1,
660	.maxTitleLength = 15,	.maxTitleLength = 15,
661		.titlePosition = 1,
662	};	};
663
664	struct configFileInfo ziplConfigType = {	struct configFileInfo ziplConfigType = {
665	.defaultConfig = "/etc/zipl.conf",	.defaultConfig = "/etc/zipl.conf",
666	.keywords = ziplKeywords,	.keywords = ziplKeywords,
667	.entryStart = LT_TITLE,	.entryStart = LT_TITLE,
668	.argsInQuotes = 1,	.argsInQuotes = 1,
669	.titleBracketed = 1,	.titleBracketed = 1,
670	};	};
671
672	struct configFileInfo extlinuxConfigType = {	struct configFileInfo extlinuxConfigType = {
673	.defaultConfig = "/boot/extlinux/extlinux.conf",	.defaultConfig = "/boot/extlinux/extlinux.conf",
674	.keywords = extlinuxKeywords,	.keywords = extlinuxKeywords,
675	.entryStart = LT_TITLE,	.caseInsensitive = 1,
676	.needsBootPrefix = 1,	.entryStart = LT_TITLE,
677	.maxTitleLength = 255,	.needsBootPrefix = 1,
678	.mbAllowExtraInitRds = 1,	.maxTitleLength = 255,
679		.mbAllowExtraInitRds = 1,
680		.defaultIsUnquoted = 1,
681		.titlePosition = 1,
682	};	};
683
684	struct grubConfig {	struct grubConfig {
685	struct singleLine * theLines;	struct singleLine *theLines;
686	struct singleEntry * entries;	struct singleEntry *entries;
687	char * primaryIndent;	char *primaryIndent;
688	char * secondaryIndent;	char *secondaryIndent;
689	int defaultImage;    /* -1 if none specified -- this value is	int defaultImage; /* -1 if none specified -- this value is
690	* written out, overriding original */	* written out, overriding original */
691	int fallbackImage;    /* just like defaultImage */	int fallbackImage; /* just like defaultImage */
692	int flags;	int flags;
693	struct configFileInfo * cfi;	struct configFileInfo *cfi;
694		int isModified; /* assumes only one entry added
695		per invocation of grubby */
696	};	};
697
698	blkid_cache blkid;	blkid_cache blkid;
699
700	struct singleEntry * findEntryByIndex(struct grubConfig * cfg, int index);	struct singleEntry *findEntryByIndex(struct grubConfig *cfg, int index);
701	struct singleEntry * findEntryByPath(struct grubConfig * cfg,	struct singleEntry *findEntryByPath(struct grubConfig *cfg,
702	const char * path, const char * prefix,	const char *path, const char *prefix,
703	int * index);	int *index);
704	static int readFile(int fd, char ** bufPtr);	struct singleEntry *findEntryByTitle(struct grubConfig *cfg, char *title,
705	static void lineInit(struct singleLine * line);	int *index);
706	struct singleLine * lineDup(struct singleLine * line);	static int readFile(int fd, char **bufPtr);
707	static void lineFree(struct singleLine * line);	static void lineInit(struct singleLine *line);
708	static int lineWrite(FILE * out, struct singleLine * line,	struct singleLine *lineDup(struct singleLine *line);
709	struct configFileInfo * cfi);	static void lineFree(struct singleLine *line);
710	static int getNextLine(char ** bufPtr, struct singleLine * line,	static int lineWrite(FILE * out, struct singleLine *line,
711	struct configFileInfo * cfi);	struct configFileInfo *cfi);
712	static char * getRootSpecifier(char * str);	static int getNextLine(char **bufPtr, struct singleLine *line,
713	static void requote(struct singleLine *line, struct configFileInfo * cfi);	struct configFileInfo *cfi);
714	static void insertElement(struct singleLine * line,	static size_t getRootSpecifier(const char *str);
715	const char * item, int insertHere,	static void requote(struct singleLine *line, struct configFileInfo *cfi);
716	struct configFileInfo * cfi);	static void insertElement(struct singleLine *line,
717	static void removeElement(struct singleLine * line, int removeHere);	const char *item, int insertHere,
718	static struct keywordTypes * getKeywordByType(enum lineType_e type,	struct configFileInfo *cfi);
719	struct configFileInfo * cfi);	static void removeElement(struct singleLine *line, int removeHere);
720	static enum lineType_e getTypeByKeyword(char * keyword,	static struct keywordTypes *getKeywordByType(enum lineType_e type,
721	struct configFileInfo * cfi);	struct configFileInfo *cfi);
722	static struct singleLine * getLineByType(enum lineType_e type,	static enum lineType_e getTypeByKeyword(char *keyword,
723	struct singleLine * line);	struct configFileInfo *cfi);
724	static int checkForExtLinux(struct grubConfig * config);	static struct singleLine *getLineByType(enum lineType_e type,
725	struct singleLine * addLineTmpl(struct singleEntry * entry,	struct singleLine *line);
726	struct singleLine * tmplLine,	static int checkForExtLinux(struct grubConfig *config);
727	struct singleLine * prevLine,	struct singleLine *addLineTmpl(struct singleEntry *entry,
728	const char * val,	struct singleLine *tmplLine,
729	struct configFileInfo * cfi);	struct singleLine *prevLine,
730	struct singleLine *  addLine(struct singleEntry * entry,	const char *val, struct configFileInfo *cfi);
731	struct configFileInfo * cfi,	struct singleLine *addLine(struct singleEntry *entry,
732	enum lineType_e type, char * defaultIndent,	struct configFileInfo *cfi,
733	const char * val);	enum lineType_e type, char *defaultIndent,
734		const char *val);
735
736	static char * sdupprintf(const char *format, ...)	static char *sdupprintf(const char *format, ...)
737	#ifdef __GNUC__	#ifdef __GNUC__
738	__attribute__ ((format (printf, 1, 2)));	__attribute__ ((format(printf, 1, 2)));
739	#else	#else
740	;	;
741	#endif	#endif
742
743	static char * sdupprintf(const char *format, ...) {	static char *sdupprintf(const char *format, ...)
744	char *buf = NULL;	{
745	char c;	char *buf = NULL;
746	va_list args;	char c;
747	size_t size = 0;	va_list args;
748	va_start(args, format);	size_t size = 0;
749		va_start(args, format);
750	/* XXX requires C99 vsnprintf behavior */
751	size = vsnprintf(&c, 1, format, args) + 1;	/* XXX requires C99 vsnprintf behavior */
752	if (size == -1) {	size = vsnprintf(&c, 1, format, args) + 1;
753	printf("ERROR: vsnprintf behavior is not C99\n");	if (size == -1) {
754	abort();	printf("ERROR: vsnprintf behavior is not C99\n");
755	}	abort();
756		}
757
758	va_end(args);	va_end(args);
759	va_start(args, format);	va_start(args, format);
760
761	buf = malloc(size);	buf = malloc(size);
762	if (buf == NULL)	if (buf == NULL)
763	return NULL;	return NULL;
764	vsnprintf(buf, size, format, args);	vsnprintf(buf, size, format, args);
765	va_end (args);	va_end(args);
766
767	return buf;	return buf;
768	}	}
769
770	static struct keywordTypes * getKeywordByType(enum lineType_e type,	static inline int
771	struct configFileInfo * cfi) {	kwcmp(struct keywordTypes *kw, const char * label, int case_insensitive)
772	for (struct keywordTypes *kw = cfi->keywords; kw->key; kw++) {	{
773	if (kw->type == type)	int kwl = strlen(kw->key);
774	return kw;	int ll = strlen(label);
775		int rc;
776		int (*snc)(const char *s1, const char *s2, size_t n) =
777		case_insensitive ? strncasecmp : strncmp;
778		int (*sc)(const char *s1, const char *s2) =
779		case_insensitive ? strcasecmp : strcmp;
780
781		rc = snc(kw->key, label, kwl);
782		if (rc)
783		return rc;
784
785		for (int i = kwl; i < ll; i++) {
786		if (isspace(label[i]))
787		return 0;
788		if (kw->separatorChar && label[i] == kw->separatorChar)
789		return 0;
790		else if (kw->nextChar && label[i] == kw->nextChar)
791		return 0;
792		return sc(kw->key+kwl, label+kwl);
793	}	}
794	return NULL;	return 0;
795	}	}
796
797	static char *getKeyByType(enum lineType_e type, struct configFileInfo * cfi) {	static enum lineType_e preferredLineType(enum lineType_e type,
798	struct keywordTypes *kt = getKeywordByType(type, cfi);	struct configFileInfo *cfi)
799	if (kt)	{
800	return kt->key;	if (isEfi && cfi == &grub2ConfigType) {
801	return "unknown";	switch (type) {
802		case LT_KERNEL:
803		return isEfiOnly ? LT_KERNEL : LT_KERNEL_EFI;
804		case LT_INITRD:
805		return isEfiOnly ? LT_INITRD : LT_INITRD_EFI;
806		default:
807		return type;
808		}
809		#if defined(__i386__) || defined(__x86_64__)
810		} else if (cfi == &grub2ConfigType) {
811		switch (type) {
812		case LT_KERNEL:
813		return LT_KERNEL_16;
814		case LT_INITRD:
815		return LT_INITRD_16;
816		default:
817		return type;
818		}
819		#endif
820		}
821		return type;
822	}	}
823
824	static char * getpathbyspec(char *device) {	static struct keywordTypes *getKeywordByType(enum lineType_e type,
825	if (!blkid)	struct configFileInfo *cfi)
826	blkid_get_cache(&blkid, NULL);	{
827		for (struct keywordTypes * kw = cfi->keywords; kw->key; kw++) {
828		if (kw->type == type)
829		return kw;
830		}
831		return NULL;
832		}
833
834	return blkid_get_devname(blkid, device, NULL);	static char *getKeyByType(enum lineType_e type, struct configFileInfo *cfi)
835		{
836		struct keywordTypes *kt = getKeywordByType(type, cfi);
837		if (kt)
838		return kt->key;
839		return "unknown";
840	}	}
841
842	static char * getuuidbydev(char *device) {	static char *getpathbyspec(char *device)
843	if (!blkid)	{
844	blkid_get_cache(&blkid, NULL);	if (!blkid)
845		blkid_get_cache(&blkid, NULL);
846
847	return blkid_get_tag_value(blkid, "UUID", device);	return blkid_get_devname(blkid, device, NULL);
848	}	}
849
850	static enum lineType_e getTypeByKeyword(char * keyword,	static char *getuuidbydev(char *device)
851	struct configFileInfo * cfi) {	{
852	for (struct keywordTypes *kw = cfi->keywords; kw->key; kw++) {	if (!blkid)
853	if (!strcmp(keyword, kw->key))	blkid_get_cache(&blkid, NULL);
854	return kw->type;
855	}	return blkid_get_tag_value(blkid, "UUID", device);
	return LT_UNKNOWN;
856	}	}
857
858	static struct singleLine * getLineByType(enum lineType_e type,	static enum lineType_e getTypeByKeyword(char *keyword,
859	struct singleLine * line) {	struct configFileInfo *cfi)
860	dbgPrintf("getLineByType(%d): ", type);	{
861	for (; line; line = line->next) {	for (struct keywordTypes * kw = cfi->keywords; kw->key; kw++) {
862	dbgPrintf("%d:%s ", line->type,	if (!kwcmp(kw, keyword, cfi->caseInsensitive))
863	line->numElements ? line->elements[0].item : "(empty)");	return kw->type;
864	if (line->type & type) break;	}
865	}	return LT_UNKNOWN;
	dbgPrintf(line ? "\n" : " (failed)\n");
	return line;
866	}	}
867
868	static int isBracketedTitle(struct singleLine * line) {	static struct singleLine *getLineByType(enum lineType_e type,
869	if (line->numElements == 1 && *line->elements[0].item == '[') {	struct singleLine *line)
870	int len = strlen(line->elements[0].item);	{
871	if (*(line->elements[0].item + len - 1) == ']') {	dbgPrintf("getLineByType(%d): ", type);
872	/* FIXME: this is a hack... */	for (; line; line = line->next) {
873	if (strcmp(line->elements[0].item, "[defaultboot]")) {	dbgPrintf("%d:%s ", line->type,
874	return 1;	line->numElements ? line->elements[0].
875	}	item : "(empty)");
876	}	if (line->type & type)
877	}	break;
878	return 0;	}
879		dbgPrintf(line ? "\n" : " (failed)\n");
880		return line;
881	}	}
882
883	static int isEntryStart(struct singleLine * line,	static int isBracketedTitle(struct singleLine *line)
884	struct configFileInfo * cfi) {	{
885	return line->type == cfi->entryStart || line->type == LT_OTHER ||	if (line->numElements == 1 && *line->elements[0].item == '[') {
886	(cfi->titleBracketed && isBracketedTitle(line));	int len = strlen(line->elements[0].item);
887		if (*(line->elements[0].item + len - 1) == ']') {
888		/* FIXME: this is a hack... */
889		if (strcmp(line->elements[0].item, "[defaultboot]")) {
890		return 1;
891		}
892		}
893		}
894		return 0;
895	}	}
896
897	/* extract the title from within brackets (for zipl) */	static int isEntryStart(struct singleLine *line, struct configFileInfo *cfi)
898	static char * extractTitle(struct singleLine * line) {	{
899	/* bracketed title... let's extract it (leaks a byte) */	return line->type == cfi->entryStart || line->type == LT_OTHER ||
900	char * title;	(cfi->titleBracketed && isBracketedTitle(line));
901	title = strdup(line->elements[0].item);	}
	title++;
	*(title + strlen(title) - 1) = '\0';
	return title;
	}
	static int readFile(int fd, char ** bufPtr) {
	int alloced = 0, size = 0, i = 0;
	char * buf = NULL;
	do {
	size += i;
	if ((size + 1024) > alloced) {
	alloced += 4096;
	buf = realloc(buf, alloced + 1);
	}
	} while ((i = read(fd, buf + size, 1024)) > 0);
	if (i < 0) {
	fprintf(stderr, _("error reading input: %s\n"), strerror(errno));
	free(buf);
	return 1;
	}
902
903	buf = realloc(buf, size + 2);	/* extract the title from within brackets (for zipl) */
904	if (size == 0)	static char *extractTitle(struct grubConfig *cfg, struct singleLine *line)
905	buf[size++] = '\n';	{
906	else	/* bracketed title... let's extract it */
907	if (buf[size - 1] != '\n')	char *title = NULL;
908	buf[size++] = '\n';	if (line->type == LT_TITLE) {
909	buf[size] = '\0';	char *tmp = line->elements[cfg->cfi->titlePosition].item;
910		if (cfg->cfi->titleBracketed) {
911		tmp++;
912		title = strdup(tmp);
913		*(title + strlen(title) - 1) = '\0';
914		} else {
915		title = strdup(tmp);
916		}
917		} else if (line->type == LT_MENUENTRY)
918		title = strdup(line->elements[1].item);
919		else
920		return NULL;
921		return title;
922		}
923
924	*bufPtr = buf;	static int readFile(int fd, char **bufPtr)
925		{
926		int alloced = 0, size = 0, i = 0;
927		char *buf = NULL;
928
929	return 0;	do {
930	}	size += i;
931		if ((size + 1024) > alloced) {
932		alloced += 4096;
933		buf = realloc(buf, alloced + 1);
934		}
935		} while ((i = read(fd, buf + size, 1024)) > 0);
936
937	static void lineInit(struct singleLine * line) {	if (i < 0) {
938	line->indent = NULL;	fprintf(stderr, _("error reading input: %s\n"),
939	line->elements = NULL;	strerror(errno));
940	line->numElements = 0;	free(buf);
941	line->next = NULL;	return 1;
942	}	}
	struct singleLine * lineDup(struct singleLine * line) {
	struct singleLine * newLine = malloc(sizeof(*newLine));
	newLine->indent = strdup(line->indent);
	newLine->next = NULL;
	newLine->type = line->type;
	newLine->numElements = line->numElements;
	newLine->elements = malloc(sizeof(*newLine->elements) *
	newLine->numElements);
	for (int i = 0; i < newLine->numElements; i++) {
	newLine->elements[i].indent = strdup(line->elements[i].indent);
	newLine->elements[i].item = strdup(line->elements[i].item);
	}
943
944	return newLine;	buf = realloc(buf, size + 2);
945	}	if (size == 0)
946		buf[size++] = '\n';
947		else if (buf[size - 1] != '\n')
948		buf[size++] = '\n';
949		buf[size] = '\0';
950
951	static void lineFree(struct singleLine * line) {	*bufPtr = buf;
	if (line->indent) free(line->indent);
952
953	for (int i = 0; i < line->numElements; i++) {	return 0;
954	free(line->elements[i].item);	}
	free(line->elements[i].indent);
	}
955
956	if (line->elements) free(line->elements);	static void lineInit(struct singleLine *line)
957	lineInit(line);	{
958		line->type = LT_UNIDENTIFIED;
959		line->indent = NULL;
960		line->elements = NULL;
961		line->numElements = 0;
962		line->next = NULL;
963	}	}
964
965	static int lineWrite(FILE * out, struct singleLine * line,	struct singleLine *lineDup(struct singleLine *line)
966	struct configFileInfo * cfi) {	{
967	if (fprintf(out, "%s", line->indent) == -1) return -1;	struct singleLine *newLine = malloc(sizeof(*newLine));
968
969	for (int i = 0; i < line->numElements; i++) {	newLine->indent = strdup(line->indent);
970	/* Need to handle this, because we strip the quotes from	newLine->next = NULL;
971	* menuentry when read it. */	newLine->type = line->type;
972	if (line->type == LT_MENUENTRY && i == 1) {	newLine->numElements = line->numElements;
973	if(!isquote(*line->elements[i].item))	newLine->elements = malloc(sizeof(*newLine->elements) *
974	fprintf(out, "\'%s\'", line->elements[i].item);	newLine->numElements);
	else
	fprintf(out, "%s", line->elements[i].item);
	fprintf(out, "%s", line->elements[i].indent);
975
976	continue;	for (int i = 0; i < newLine->numElements; i++) {
977		newLine->elements[i].indent = strdup(line->elements[i].indent);
978		newLine->elements[i].item = strdup(line->elements[i].item);
979	}	}
980
981	if (i == 1 && line->type == LT_KERNELARGS && cfi->argsInQuotes)	return newLine;
982	if (fputc('"', out) == EOF) return -1;	}
	if (fprintf(out, "%s", line->elements[i].item) == -1) return -1;
	if (i < line->numElements - 1)
	if (fprintf(out, "%s", line->elements[i].indent) == -1) return -1;
	}
983
984	if (line->type == LT_KERNELARGS && cfi->argsInQuotes)	static void lineFree(struct singleLine *line)
985	if (fputc('"', out) == EOF) return -1;	{
986		if (line->indent)
987		free(line->indent);
988
989	if (fprintf(out, "\n") == -1) return -1;	for (int i = 0; i < line->numElements; i++) {
990		free(line->elements[i].item);
991		free(line->elements[i].indent);
992		}
993
994	return 0;	if (line->elements)
995		free(line->elements);
996		lineInit(line);
997	}	}
998
999	/* we've guaranteed that the buffer ends w/ \n\0 */	static int lineWrite(FILE * out, struct singleLine *line,
1000	static int getNextLine(char ** bufPtr, struct singleLine * line,	struct configFileInfo *cfi)
1001	struct configFileInfo * cfi) {	{
1002	char * end;	if (fprintf(out, "%s", line->indent) == -1)
1003	char * start = *bufPtr;	return -1;
	char * chptr;
	int elementsAlloced = 0;
	struct lineElement * element;
	int first = 1;
1004
1005	lineFree(line);	for (int i = 0; i < line->numElements; i++) {
1006		/* Need to handle this, because we strip the quotes from
1007		* menuentry when read it. */
1008		if (line->type == LT_MENUENTRY && i == 1) {
1009		if (!isquote(*line->elements[i].item)) {
1010		int substring = 0;
1011		/* If the line contains nested quotes, we did
1012		* not strip the "interna" quotes and we must
1013		* use the right quotes again when writing
1014		* the updated file. */
1015		for (int j = i; j < line->numElements; j++) {
1016		if (strchr(line->elements[i].item, '\'')
1017		!= NULL) {
1018		substring = 1;
1019		fprintf(out, "\"%s\"",
1020		line->elements[i].item);
1021		break;
1022		}
1023		}
1024		if (!substring)
1025		fprintf(out, "\'%s\'",
1026		line->elements[i].item);
1027		} else {
1028		fprintf(out, "%s", line->elements[i].item);
1029		}
1030		fprintf(out, "%s", line->elements[i].indent);
1031
1032	end = strchr(start, '\n');	continue;
1033	*end = '\0';	}
	*bufPtr = end + 1;
1034
1035	for (chptr = start; *chptr && isspace(*chptr); chptr++) ;	if (i == 1 && line->type == LT_KERNELARGS && cfi->argsInQuotes)
1036		if (fputc('"', out) == EOF)
1037		return -1;
1038
1039		if (fprintf(out, "%s", line->elements[i].item) == -1)
1040		return -1;
1041		if (i < line->numElements - 1 || line->type == LT_SET_VARIABLE)
1042		if (fprintf(out, "%s", line->elements[i].indent) == -1)
1043		return -1;
1044		}
1045
1046		if (line->type == LT_KERNELARGS && cfi->argsInQuotes)
1047		if (fputc('"', out) == EOF)
1048		return -1;
1049
1050	line->indent = strndup(start, chptr - start);	if (fprintf(out, "\n") == -1)
1051	start = chptr;	return -1;
1052
1053	while (start < end) {	return 0;
1054	/* we know !isspace(*start) */	}
1055
1056	if (elementsAlloced == line->numElements) {	/* we've guaranteed that the buffer ends w/ \n\0 */
1057	elementsAlloced += 5;	static int getNextLine(char **bufPtr, struct singleLine *line,
1058	line->elements = realloc(line->elements,	struct configFileInfo *cfi)
1059	sizeof(*line->elements) * elementsAlloced);	{
1060	}	char *end;
1061		char *start = *bufPtr;
1062		char *chptr;
1063		int elementsAlloced = 0;
1064		struct lineElement *element;
1065		int first = 1;
1066
1067	element = line->elements + line->numElements;	lineFree(line);
1068
1069	chptr = start;	end = strchr(start, '\n');
1070	while (*chptr && !isspace(*chptr)) {	*end = '\0';
1071	if (first && *chptr == '=') break;	*bufPtr = end + 1;
	chptr++;
	}
	element->item = strndup(start, chptr - start);
	start = chptr;
1072
1073	/* lilo actually accepts the pathological case of append = " foo " */	for (chptr = start; *chptr && isspace(*chptr); chptr++) ;
	if (*start == '=')
	chptr = start + 1;
	else
	chptr = start;
	do {
	for (; *chptr && isspace(*chptr); chptr++);
	if (*chptr == '=')
	chptr = chptr + 1;
	} while (isspace(*chptr));
1074
1075	element->indent = strndup(start, chptr - start);	line->indent = strndup(start, chptr - start);
1076	start = chptr;	start = chptr;
1077
1078	line->numElements++;	while (start < end) {
1079	first = 0;	/* we know !isspace(*start) */
	}
1080
1081	if (!line->numElements)	if (elementsAlloced == line->numElements) {
1082	line->type = LT_WHITESPACE;	elementsAlloced += 5;
1083	else {	line->elements = realloc(line->elements,
1084	line->type = getTypeByKeyword(line->elements[0].item, cfi);	sizeof(*line->elements) *
1085	if (line->type == LT_UNKNOWN) {	elementsAlloced);
1086	/* zipl does [title] instead of something reasonable like all	}
	* the other boot loaders.  kind of ugly */
	if (cfi->titleBracketed && isBracketedTitle(line)) {
	line->type = LT_TITLE;
	}
	/* this is awkward, but we need to be able to handle keywords
	that begin with a # (specifically for #boot in grub.conf),
	but still make comments lines with no elements (everything
	stored in the indent */
	if (*line->elements[0].item == '#') {
	char * fullLine;
	int len;
	len = strlen(line->indent);
	for (int i = 0; i < line->numElements; i++)
	len += strlen(line->elements[i].item) +
	strlen(line->elements[i].indent);
1087
1088	fullLine = malloc(len + 1);	element = line->elements + line->numElements;
	strcpy(fullLine, line->indent);
	free(line->indent);
	line->indent = fullLine;
1089
1090	for (int i = 0; i < line->numElements; i++) {	chptr = start;
1091	strcat(fullLine, line->elements[i].item);	while (*chptr && !isspace(*chptr)) {
1092	strcat(fullLine, line->elements[i].indent);	if (first && *chptr == '=')
1093	free(line->elements[i].item);	break;
1094	free(line->elements[i].indent);	chptr++;
1095	}	}
1096		if (line->type == LT_UNIDENTIFIED)
1097		line->type = getTypeByKeyword(start, cfi);
1098		element->item = strndup(start, chptr - start);
1099		start = chptr;
1100
1101		/* lilo actually accepts the pathological case of
1102		* append = " foo " */
1103		if (*start == '=')
1104		chptr = start + 1;
1105		else
1106		chptr = start;
1107
1108		do {
1109		for (; *chptr && isspace(*chptr); chptr++) ;
1110		if (*chptr == '=')
1111		chptr = chptr + 1;
1112		} while (isspace(*chptr));
1113
1114		element->indent = strndup(start, chptr - start);
1115		start = chptr;
1116
1117		line->numElements++;
1118		first = 0;
1119		}
1120
1121		if (!line->numElements)
1122	line->type = LT_WHITESPACE;	line->type = LT_WHITESPACE;
1123	line->numElements = 0;	else {
1124	}	line->type = getTypeByKeyword(line->elements[0].item, cfi);
1125	} else {	if (line->type == LT_UNKNOWN) {
1126	struct keywordTypes *kw;	/* zipl does [title] instead of something reasonable
1127		* like all the other boot loaders.  kind of ugly */
1128		if (cfi->titleBracketed && isBracketedTitle(line)) {
1129		line->type = LT_TITLE;
1130		}
1131
1132	kw = getKeywordByType(line->type, cfi);	/* this is awkward, but we need to be able to handle
1133		* keywords that begin with a # (specifically for
1134		* #boot in grub.conf), but still make comments lines
1135		* with no elements (everything stored in the indent
1136		*/
1137		if (*line->elements[0].item == '#') {
1138		char *fullLine;
1139		int len;
1140
1141		len = strlen(line->indent);
1142		for (int i = 0; i < line->numElements; i++)
1143		len += strlen(line->elements[i].item) +
1144		strlen(line->elements[i].indent);
1145
1146		fullLine = malloc(len + 1);
1147		strcpy(fullLine, line->indent);
1148		free(line->indent);
1149		line->indent = fullLine;
1150
1151		for (int i = 0; i < line->numElements; i++) {
1152		strcat(fullLine,
1153		line->elements[i].item);
1154		strcat(fullLine,
1155		line->elements[i].indent);
1156		free(line->elements[i].item);
1157		free(line->elements[i].indent);
1158		}
1159
1160	/* space isn't the only separator, we need to split	line->type = LT_WHITESPACE;
1161	* elements up more	line->numElements = 0;
	*/
	if (!isspace(kw->separatorChar)) {
	char indent[2] = "";
	indent[0] = kw->separatorChar;
	for (int i = 1; i < line->numElements; i++) {
	char *p;
	int numNewElements;
	numNewElements = 0;
	p = line->elements[i].item;
	while (*p != '\0') {
	if (*p == kw->separatorChar)
	numNewElements++;
	p++;
	}
	if (line->numElements + numNewElements >= elementsAlloced) {
	elementsAlloced += numNewElements + 5;
	line->elements = realloc(line->elements,
	sizeof(*line->elements) * elementsAlloced);
	}
	for (int j = line->numElements; j > i; j--) {
	line->elements[j + numNewElements] = line->elements[j];
1162	}	}
1163	line->numElements += numNewElements;	} else if (line->type == LT_INITRD) {
1164		struct keywordTypes *kw;
1165
1166	p = line->elements[i].item;	kw = getKeywordByType(line->type, cfi);
	while (*p != '\0') {
1167
1168	while (*p != kw->separatorChar && *p != '\0') p++;	/* space isn't the only separator, we need to split
1169	if (*p == '\0') {	* elements up more
1170	break;	*/
1171	}	if (!isspace(kw->separatorChar)) {
1172		char indent[2] = "";
1173		indent[0] = kw->separatorChar;
1174		for (int i = 1; i < line->numElements; i++) {
1175		char *p;
1176		int numNewElements;
1177
1178		numNewElements = 0;
1179		p = line->elements[i].item;
1180		while (*p != '\0') {
1181		if (*p == kw->separatorChar)
1182		numNewElements++;
1183		p++;
1184		}
1185		if (line->numElements +
1186		numNewElements >= elementsAlloced) {
1187		elementsAlloced +=
1188		numNewElements + 5;
1189		line->elements =
1190		realloc(line->elements,
1191		sizeof(*line->
1192		elements) *
1193		elementsAlloced);
1194		}
1195
1196	line->elements[i + 1].indent = line->elements[i].indent;	for (int j = line->numElements; j > i;
1197	line->elements[i].indent = strdup(indent);	j--) {
1198	*p++ = '\0';	line->elements[j +
1199	i++;	numNewElements] =
1200	line->elements[i].item = strdup(p);	line->elements[j];
1201		}
1202		line->numElements += numNewElements;
1203
1204		p = line->elements[i].item;
1205		while (*p != '\0') {
1206
1207		while (*p != kw->separatorChar
1208		&& *p != '\0')
1209		p++;
1210		if (*p == '\0') {
1211		break;
1212		}
1213
1214		line->elements[i + 1].indent =
1215		line->elements[i].indent;
1216		line->elements[i].indent =
1217		strdup(indent);
1218		*p++ = '\0';
1219		i++;
1220		line->elements[i].item =
1221		strdup(p);
1222		}
1223		}
1224		}
1225		} else if (line->type == LT_SET_VARIABLE) {
1226		/* and if it's a "set blah=" we need to split it
1227		* yet a third way to avoid rhbz# XXX FIXME :/
1228		*/
1229		char *eq;
1230		int l;
1231		int numElements = line->numElements;
1232		struct lineElement *newElements;
1233		eq = strchr(line->elements[1].item, '=');
1234		if (!eq)
1235		return 0;
1236		l = eq - line->elements[1].item;
1237		if (eq[1] != 0)
1238		numElements++;
1239		newElements = calloc(numElements,sizeof (*newElements));
1240		memcpy(&newElements[0], &line->elements[0],
1241		sizeof (newElements[0]));
1242		newElements[1].item =
1243		strndup(line->elements[1].item, l);
1244		newElements[1].indent = "=";
1245		*(eq++) = '\0';
1246		newElements[2].item = strdup(eq);
1247		free(line->elements[1].item);
1248		if (line->elements[1].indent)
1249		newElements[2].indent = line->elements[1].indent;
1250		for (int i = 2; i < line->numElements; i++) {
1251		newElements[i+1].item = line->elements[i].item;
1252		newElements[i+1].indent =
1253		line->elements[i].indent;
1254	}	}
1255	}	free(line->elements);
1256		line->elements = newElements;
1257		line->numElements = numElements;
1258	}	}
1259	}	}
	}
1260
1261	return 0;	return 0;
1262	}	}
1263
1264	static struct grubConfig * readConfig(const char * inName,	static int isnumber(const char *s)
1265	struct configFileInfo * cfi) {	{
1266	int in;	int i;
1267	char * incoming = NULL, * head;	for (i = 0; s[i] != '\0'; i++)
1268	int rc;	if (s[i] < '0' || s[i] > '9')
1269	int sawEntry = 0;	return 0;
1270	int movedLine = 0;	return i;
1271	struct grubConfig * cfg;	}
	struct singleLine * last = NULL, * line, * defaultLine = NULL;
	char * end;
	struct singleEntry * entry = NULL;
	int len;
	char * buf;
	if (!strcmp(inName, "-")) {
	in = 0;
	} else {
	if ((in = open(inName, O_RDONLY)) < 0) {
	fprintf(stderr, _("error opening %s for read: %s\n"),
	inName, strerror(errno));
	return NULL;
	}
	}
	rc = readFile(in, &incoming);
	close(in);
	if (rc) return NULL;
	head = incoming;
	cfg = malloc(sizeof(*cfg));
	cfg->primaryIndent = strdup("");
	cfg->secondaryIndent = strdup("\t");
	cfg->flags = GRUB_CONFIG_NO_DEFAULT;
	cfg->cfi = cfi;
	cfg->theLines = NULL;
	cfg->entries = NULL;
	cfg->fallbackImage = 0;
	/* copy everything we have */
	while (*head) {
	line = malloc(sizeof(*line));
	lineInit(line);
1272
1273	if (getNextLine(&head, line, cfi)) {	static struct grubConfig *readConfig(const char *inName,
1274	free(line);	struct configFileInfo *cfi)
1275	/* XXX memory leak of everything in cfg */	{
1276	return NULL;	int in;
1277	}	char *incoming = NULL, *head;
1278		int rc;
1279	if (!sawEntry && line->numElements) {	int sawEntry = 0;
1280	free(cfg->primaryIndent);	int movedLine = 0;
1281	cfg->primaryIndent = strdup(line->indent);	struct grubConfig *cfg;
1282	} else if (line->numElements) {	struct singleLine *last = NULL, *line, *defaultLine = NULL;
1283	free(cfg->secondaryIndent);	char *end;
1284	cfg->secondaryIndent = strdup(line->indent);	struct singleEntry *entry = NULL;
1285	}	int len;
1286		char *buf;
1287	if (isEntryStart(line, cfi) || (cfg->entries && !sawEntry)) {
1288	sawEntry = 1;	if (inName == NULL) {
1289	if (!entry) {	printf("Could not find bootloader configuration\n");
1290	cfg->entries = malloc(sizeof(*entry));	exit(1);
1291	entry = cfg->entries;	} else if (!strcmp(inName, "-")) {
1292	} else {	in = 0;
1293	entry->next = malloc(sizeof(*entry));	} else {
1294	entry = entry->next;	if ((in = open(inName, O_RDONLY)) < 0) {
1295	}	fprintf(stderr, _("error opening %s for read: %s\n"),
1296		inName, strerror(errno));
1297		return NULL;
1298		}
1299		}
1300
1301	entry->skip = 0;	rc = readFile(in, &incoming);
1302	entry->multiboot = 0;	close(in);
1303	entry->lines = NULL;	if (rc)
1304	entry->next = NULL;	return NULL;
1305	}
1306		head = incoming;
1307	if (line->type == LT_SET_VARIABLE) {	cfg = malloc(sizeof(*cfg));
1308	dbgPrintf("found 'set' command (%d elements): ", line->numElements);	cfg->primaryIndent = strdup("");
1309	dbgPrintf("%s", line->indent);	cfg->secondaryIndent = strdup("\t");
1310	for (int i = 0; i < line->numElements; i++)	cfg->flags = GRUB_CONFIG_NO_DEFAULT;
1311	dbgPrintf("\"%s\"%s", line->elements[i].item, line->elements[i].indent);	cfg->cfi = cfi;
1312	dbgPrintf("\n");	cfg->theLines = NULL;
1313	struct keywordTypes *kwType = getKeywordByType(LT_DEFAULT, cfi);	cfg->entries = NULL;
1314	if (kwType && line->numElements == 3 &&	cfg->fallbackImage = 0;
1315	!strcmp(line->elements[1].item, kwType->key)) {	cfg->isModified = 0;
1316	dbgPrintf("Line sets default config\n");
1317	cfg->flags &= ~GRUB_CONFIG_NO_DEFAULT;	/* copy everything we have */
1318	defaultLine = line;	while (*head) {
1319	}	line = malloc(sizeof(*line));
1320	} else if (line->type == LT_DEFAULT && line->numElements == 2) {	lineInit(line);
1321	cfg->flags &= ~GRUB_CONFIG_NO_DEFAULT;
1322	defaultLine = line;	if (getNextLine(&head, line, cfi)) {
1323		free(line);
1324	} else if (line->type == LT_KERNEL) {	/* XXX memory leak of everything in cfg */
1325	/* if by some freak chance this is multiboot and the "module"	return NULL;
1326	* lines came earlier in the template, make sure to use LT_HYPER	}
	* instead of LT_KERNEL now
	*/
	if (entry->multiboot)
	line->type = LT_HYPER;
	} else if (line->type == LT_MBMODULE) {
	/* go back and fix the LT_KERNEL line to indicate LT_HYPER
	* instead, now that we know this is a multiboot entry.
	* This only applies to grub, but that's the only place we
	* should find LT_MBMODULE lines anyway.
	*/
	for (struct singleLine *l = entry->lines; l; l = l->next) {
	if (l->type == LT_HYPER)
	break;
	else if (l->type == LT_KERNEL) {
	l->type = LT_HYPER;
	break;
	}
	}
	entry->multiboot = 1;
	} else if (line->type == LT_HYPER) {
	entry->multiboot = 1;
	} else if (line->type == LT_FALLBACK && line->numElements == 2) {
	cfg->fallbackImage = strtol(line->elements[1].item, &end, 10);
	if (*end) cfg->fallbackImage = -1;
	} else if (line->type == LT_TITLE && line->numElements > 1) {
	/* make the title a single argument (undoing our parsing) */
	len = 0;
	for (int i = 1; i < line->numElements; i++) {
	len += strlen(line->elements[i].item);
	len += strlen(line->elements[i].indent);
	}
	buf = malloc(len + 1);
	*buf = '\0';
1327
1328	for (int i = 1; i < line->numElements; i++) {	if (!sawEntry && line->numElements) {
1329	strcat(buf, line->elements[i].item);	free(cfg->primaryIndent);
1330	free(line->elements[i].item);	cfg->primaryIndent = strdup(line->indent);
1331		} else if (line->numElements) {
1332		free(cfg->secondaryIndent);
1333		cfg->secondaryIndent = strdup(line->indent);
1334		}
1335
1336	if ((i + 1) != line->numElements) {	if (isEntryStart(line, cfi) || (cfg->entries && !sawEntry)) {
1337	strcat(buf, line->elements[i].indent);	sawEntry = 1;
1338	free(line->elements[i].indent);	if (!entry) {
1339	}	cfg->entries = malloc(sizeof(*entry));
1340	}	entry = cfg->entries;
1341		} else {
1342	line->elements[1].indent =	entry->next = malloc(sizeof(*entry));
1343	line->elements[line->numElements - 1].indent;	entry = entry->next;
1344	line->elements[1].item = buf;	}
	line->numElements = 2;
	} else if (line->type == LT_MENUENTRY && line->numElements > 3) {
	/* let --remove-kernel="TITLE=what" work */
	len = 0;
	char *extras;
	char *title;
	for (int i = 1; i < line->numElements; i++) {
	len += strlen(line->elements[i].item);
	len += strlen(line->elements[i].indent);
	}
	buf = malloc(len + 1);
	*buf = '\0';
	/* allocate mem for extra flags. */
	extras = malloc(len + 1);
	*extras = '\0';
	/* get title. */
	for (int i = 0; i < line->numElements; i++) {
	if (!strcmp(line->elements[i].item, "menuentry"))
	continue;
	if (isquote(*line->elements[i].item))
	title = line->elements[i].item + 1;
	else
	title = line->elements[i].item;
1345
1346	len = strlen(title);	entry->skip = 0;
1347	if (isquote(title[len-1])) {	entry->multiboot = 0;
1348	strncat(buf, title,len-1);	entry->lines = NULL;
1349	break;	entry->next = NULL;
	} else {
	strcat(buf, title);
	strcat(buf, line->elements[i].indent);
1350	}	}
	}
	/* get extras */
	int count = 0;
	for (int i = 0; i < line->numElements; i++) {
	if (count >= 2) {
	strcat(extras, line->elements[i].item);
	strcat(extras, line->elements[i].indent);
	}
	if (!strcmp(line->elements[i].item, "menuentry"))
	continue;
	/* count ' or ", there should be two in menuentry line. */
	if (isquote(*line->elements[i].item))
	count++;
	len = strlen(line->elements[i].item);
	if (isquote(line->elements[i].item[len -1]))
	count++;
	/* ok, we get the final ' or ", others are extras. */
	}
	line->elements[1].indent =
	line->elements[line->numElements - 2].indent;
	line->elements[1].item = buf;
	line->elements[2].indent =
	line->elements[line->numElements - 2].indent;
	line->elements[2].item = extras;
	line->numElements = 3;
	} else if (line->type == LT_KERNELARGS && cfi->argsInQuotes) {
	/* Strip off any " which may be present; they'll be put back
	on write. This is one of the few (the only?) places that grubby
	canonicalizes the output */
	if (line->numElements >= 2) {
	int last, len;
	if (isquote(*line->elements[1].item))
	memmove(line->elements[1].item, line->elements[1].item + 1,
	strlen(line->elements[1].item + 1) + 1);
	last = line->numElements - 1;
	len = strlen(line->elements[last].item) - 1;
	if (isquote(line->elements[last].item[len]))
	line->elements[last].item[len] = '\0';
	}
	}
	/* If we find a generic config option which should live at the
	top of the file, move it there. Old versions of grubby were
	probably responsible for putting new images in the wrong
	place in front of it anyway. */
	if (sawEntry && line->type == LT_GENERIC) {
	struct singleLine **l = &cfg->theLines;
	struct singleLine **last_nonws = &cfg->theLines;
	while (*l) {
	if ((*l)->type != LT_WHITESPACE)
	last_nonws = &((*l)->next);
	l = &((*l)->next);
	}
	line->next = *last_nonws;
	*last_nonws = line;
	movedLine = 1;
	continue; /* without setting 'last' */
	}
	/* If a second line of whitespace happens after a generic option
	which was moved, drop it. */
	if (movedLine && line->type == LT_WHITESPACE && last->type == LT_WHITESPACE) {
	lineFree(line);
	free(line);
	movedLine = 0;
	continue;
	}
	movedLine = 0;
1351
1352	if (sawEntry) {	if (line->type == LT_SET_VARIABLE) {
1353	if (!entry->lines)	dbgPrintf("found 'set' command (%d elements): ",
1354	entry->lines = line;	line->numElements);
1355	else	dbgPrintf("%s", line->indent);
1356	last->next = line;	for (int i = 0; i < line->numElements; i++)
1357	dbgPrintf("readConfig added %s to %p\n", getKeyByType(line->type, cfi), entry);	dbgPrintf("\"%s\"%s", line->elements[i].item,
1358		line->elements[i].indent);
1359	/* we could have seen this outside of an entry... if so, we	dbgPrintf("\n");
1360	* ignore it like any other line we don't grok */	struct keywordTypes *kwType =
1361	if (line->type == LT_ENTRY_END && sawEntry)	getKeywordByType(LT_DEFAULT, cfi);
1362	sawEntry = 0;	if (kwType && line->numElements == 3
1363	} else {	&& !strcmp(line->elements[1].item, kwType->key)
1364	if (!cfg->theLines)	&& !is_special_grub2_variable(
1365	cfg->theLines = line;	line->elements[2].item)) {
1366	else	dbgPrintf("Line sets default config\n");
1367	last->next = line;	cfg->flags &= ~GRUB_CONFIG_NO_DEFAULT;
1368	dbgPrintf("readConfig added %s to cfg\n", getKeyByType(line->type, cfi));	defaultLine = line;
1369	}	}
1370		} else if (iskernel(line->type)) {
1371		/* if by some freak chance this is multiboot and the
1372		* "module" lines came earlier in the template, make
1373		* sure to use LT_HYPER instead of LT_KERNEL now
1374		*/
1375		if (entry && entry->multiboot)
1376		line->type = LT_HYPER;
1377
1378	last = line;	} else if (line->type == LT_MBMODULE) {
1379	}	/* go back and fix the LT_KERNEL line to indicate
1380		* LT_HYPER instead, now that we know this is a
1381		* multiboot entry.  This only applies to grub, but
1382		* that's the only place we should find LT_MBMODULE
1383		* lines anyway.
1384		*/
1385		for (struct singleLine * l = entry->lines; l;
1386		l = l->next) {
1387		if (l->type == LT_HYPER)
1388		break;
1389		else if (iskernel(l->type)) {
1390		l->type = LT_HYPER;
1391		break;
1392		}
1393		}
1394		entry->multiboot = 1;
1395
1396	free(incoming);	} else if (line->type == LT_HYPER) {
1397		entry->multiboot = 1;
1398
1399	dbgPrintf("defaultLine is %s\n", defaultLine ? "set" : "unset");	} else if (line->type == LT_FALLBACK && line->numElements == 2) {
1400	if (defaultLine) {	cfg->fallbackImage =
1401	if (defaultLine->numElements > 2 &&	strtol(line->elements[1].item, &end, 10);
1402	cfi->defaultSupportSaved &&	if (*end)
1403	!strncmp(defaultLine->elements[2].item,"\"${saved_entry}\"", 16)) {	cfg->fallbackImage = -1;
1404	cfg->defaultImage = DEFAULT_SAVED_GRUB2;
1405	} else if (cfi->defaultIsVariable) {	} else if ((line->type == LT_DEFAULT && cfi->defaultIsUnquoted)
1406	char *value = defaultLine->elements[2].item;	|| (line->type == LT_TITLE
1407	while (*value && (*value == '"' || *value == '\'' ||	&& line->numElements > 1)) {
1408	*value == ' ' || *value == '\t'))	/* make the title/default a single argument (undoing
1409	value++;	* our parsing) */
1410	cfg->defaultImage = strtol(value, &end, 10);	len = 0;
1411	while (*end && (*end == '"' || *end == '\'' ||	for (int i = 1; i < line->numElements; i++) {
1412	*end == ' ' || *end == '\t'))	len += strlen(line->elements[i].item);
1413	end++;	len += strlen(line->elements[i].indent);
1414	if (*end) cfg->defaultImage = -1;	}
1415	} else if (cfi->defaultSupportSaved &&	buf = malloc(len + 1);
1416	!strncmp(defaultLine->elements[1].item, "saved", 5)) {	*buf = '\0';
	cfg->defaultImage = DEFAULT_SAVED;
	} else if (cfi->defaultIsIndex) {
	cfg->defaultImage = strtol(defaultLine->elements[1].item, &end, 10);
	if (*end) cfg->defaultImage = -1;
	} else if (defaultLine->numElements >= 2) {
	int i = 0;
	while ((entry = findEntryByIndex(cfg, i))) {
	for (line = entry->lines; line; line = line->next)
	if (line->type == LT_TITLE) break;
	if (!cfi->titleBracketed) {
	if (line && (line->numElements >= 2) &&
	!strcmp(defaultLine->elements[1].item,
	line->elements[1].item)) break;
	} else if (line) {
	if (!strcmp(defaultLine->elements[1].item,
	extractTitle(line))) break;
	}
	i++;
	entry = NULL;
	}
1417
1418	if (entry){	for (int i = 1; i < line->numElements; i++) {
1419	cfg->defaultImage = i;	strcat(buf, line->elements[i].item);
1420	}else{	free(line->elements[i].item);
1421	cfg->defaultImage = -1;
1422	}	if ((i + 1) != line->numElements) {
1423	}	strcat(buf, line->elements[i].indent);
1424	} else {	free(line->elements[i].indent);
1425	cfg->defaultImage = 0;	}
1426	}	}
1427
1428	return cfg;	line->elements[1].indent =
1429	}	line->elements[line->numElements - 1].indent;
1430		line->elements[1].item = buf;
1431		line->numElements = 2;
1432		} else if (line->type == LT_MENUENTRY && line->numElements > 3) {
1433		/* let --remove-kernel="TITLE=what" work */
1434		len = 0;
1435		char *extras;
1436		char *title;
1437		/* initially unseen value */
1438		char quote_char = '\0';
1439
1440		for (int i = 1; i < line->numElements; i++) {
1441		len += strlen(line->elements[i].item);
1442		len += strlen(line->elements[i].indent);
1443		}
1444		buf = malloc(len + 1);
1445		*buf = '\0';
1446
1447	static void writeDefault(FILE * out, char * indent,	/* allocate mem for extra flags. */
1448	char * separator, struct grubConfig * cfg) {	extras = malloc(len + 1);
1449	struct singleEntry * entry;	*extras = '\0';
1450	struct singleLine * line;
1451	int i;	int buf_len = 0;
1452		/* get title. */
1453	if (!cfg->defaultImage && cfg->flags == GRUB_CONFIG_NO_DEFAULT) return;	for (int i = 0; i < line->numElements; i++) {
1454		if (!strcmp
1455	if (cfg->defaultImage == DEFAULT_SAVED)	(line->elements[i].item, "menuentry"))
1456	fprintf(out, "%sdefault%ssaved\n", indent, separator);	continue;
1457	else if (cfg->defaultImage == DEFAULT_SAVED_GRUB2)	if (isquote(*line->elements[i].item)
1458	fprintf(out, "%sset default=\"${saved_entry}\"\n", indent);	&& quote_char == '\0') {
1459	else if (cfg->defaultImage > -1) {	/* ensure we properly pair off quotes */
1460	if (cfg->cfi->defaultIsIndex) {	quote_char = *line->elements[i].item;
1461	if (cfg->cfi->defaultIsVariable) {	title = line->elements[i].item + 1;
1462	fprintf(out, "%sset default=\"%d\"\n", indent,	} else {
1463	cfg->defaultImage);	title = line->elements[i].item;
1464	} else {	}
	fprintf(out, "%sdefault%s%d\n", indent, separator,
	cfg->defaultImage);
	}
	} else {
	int image = cfg->defaultImage;
1465
1466	entry = cfg->entries;	len = strlen(title);
1467	while (entry && entry->skip) entry = entry->next;	if (title[len - 1] == quote_char) {
1468		memcpy(buf + buf_len, title, len - 1);
1469		buf_len += (len - 1);
1470		break;
1471		} else {
1472		memcpy(buf + buf_len, title, len);
1473		buf_len += len;
1474		len = strlen(line->elements[i].indent);
1475		memcpy(buf + buf_len, line->elements[i].indent, len);
1476		buf_len += len;
1477		}
1478		}
1479		buf[buf_len] = '\0';
1480
1481	i = 0;	/* get extras */
1482	while (entry && i < image) {	int count = 0;
1483	entry = entry->next;	quote_char = '\0';
1484		for (int i = 0; i < line->numElements; i++) {
1485		if (count >= 2) {
1486		strcat(extras, line->elements[i].item);
1487		strcat(extras,
1488		line->elements[i].indent);
1489		}
1490
1491	while (entry && entry->skip) entry = entry->next;	if (!strcmp
1492	i++;	(line->elements[i].item, "menuentry"))
1493	}	continue;
1494
1495		/* count ' or ", there should be two in menuentry line. */
1496		if (isquote(*line->elements[i].item)
1497		&& quote_char == '\0') {
1498		/* ensure we properly pair off quotes */
1499		quote_char = *line->elements[i].item;
1500		count++;
1501		}
1502
1503	if (!entry) return;	len = strlen(line->elements[i].item);
1504
1505	line = getLineByType(LT_TITLE, entry->lines);	if (line->elements[i].item[len - 1] ==
1506		quote_char)
1507		count++;
1508
1509	if (line && line->numElements >= 2)	/* ok, we get the final ' or ", others are extras. */
1510	fprintf(out, "%sdefault%s%s\n", indent, separator,	}
1511	line->elements[1].item);	line->elements[1].indent =
1512	else if (line && (line->numElements == 1) &&	line->elements[line->numElements - 2].indent;
1513	cfg->cfi->titleBracketed) {	line->elements[1].item = buf;
1514	fprintf(out, "%sdefault%s%s\n", indent, separator,	line->elements[2].indent =
1515	extractTitle(line));	line->elements[line->numElements - 2].indent;
1516	}	line->elements[2].item = extras;
1517	}	line->numElements = 3;
1518	}	} else if (line->type == LT_KERNELARGS && cfi->argsInQuotes) {
1519	}	/* Strip off any " which may be present; they'll be
1520		* put back on write. This is one of the few (the
1521		* only?) places that grubby canonicalizes the output
1522		*/
1523		if (line->numElements >= 2) {
1524		int last, len;
1525
1526	static int writeConfig(struct grubConfig * cfg, char * outName,	if (isquote(*line->elements[1].item))
1527	const char * prefix) {	memmove(line->elements[1].item,
1528	FILE * out;	line->elements[1].item + 1,
1529	struct singleLine * line;	strlen(line->elements[1].item +
1530	struct singleEntry * entry;	1) + 1);
1531	char * tmpOutName;
1532	int needs = MAIN_DEFAULT;	last = line->numElements - 1;
1533	struct stat sb;	len = strlen(line->elements[last].item) - 1;
1534	int i;	if (isquote(line->elements[last].item[len]))
1535		line->elements[last].item[len] = '\0';
1536	if (!strcmp(outName, "-")) {	}
1537	out = stdout;	}
	tmpOutName = NULL;
	} else {
	if (!lstat(outName, &sb) && S_ISLNK(sb.st_mode)) {
	char * buf;
	int len = 256;
	int rc;
	/* most likely the symlink is relative, so change our
	directory to the dir of the symlink */
	rc = chdir(dirname(outName));
	do {
	buf = alloca(len + 1);
	rc = readlink(basename(outName), buf, len);
	if (rc == len) len += 256;
	} while (rc == len);
	if (rc < 0) {
	fprintf(stderr, _("grubby: error readlink link %s: %s\n"),
	outName, strerror(errno));
	return 1;
	}
	outName = buf;
	outName[rc] = '\0';
	}
	tmpOutName = alloca(strlen(outName) + 2);
	sprintf(tmpOutName, "%s-", outName);
	out = fopen(tmpOutName, "w");
	if (!out) {
	fprintf(stderr, _("grubby: error creating %s: %s\n"), tmpOutName,
	strerror(errno));
	return 1;
	}
	if (!stat(outName, &sb)) {
	if (chmod(tmpOutName, sb.st_mode & ~(S_IFMT))) {
	fprintf(stderr, _("grubby: error setting perms on %s: %s\n"),
	tmpOutName, strerror(errno));
	fclose(out);
	unlink(tmpOutName);
	return 1;
	}
	}
	}
1538
1539	line = cfg->theLines;	if (line->type == LT_DEFAULT && line->numElements == 2) {
1540	struct keywordTypes *defaultKw = getKeywordByType(LT_DEFAULT, cfg->cfi);	cfg->flags &= ~GRUB_CONFIG_NO_DEFAULT;
1541	while (line) {	defaultLine = line;
1542	if (line->type == LT_SET_VARIABLE && defaultKw &&	}
	line->numElements == 3 &&
	!strcmp(line->elements[1].item, defaultKw->key)) {
	writeDefault(out, line->indent, line->elements[0].indent, cfg);
	needs &= ~MAIN_DEFAULT;
	} else if (line->type == LT_DEFAULT) {
	writeDefault(out, line->indent, line->elements[0].indent, cfg);
	needs &= ~MAIN_DEFAULT;
	} else if (line->type == LT_FALLBACK) {
	if (cfg->fallbackImage > -1)
	fprintf(out, "%s%s%s%d\n", line->indent,
	line->elements[0].item, line->elements[0].indent,
	cfg->fallbackImage);
	} else {
	if (lineWrite(out, line, cfg->cfi) == -1) {
	fprintf(stderr, _("grubby: error writing %s: %s\n"),
	tmpOutName, strerror(errno));
	fclose(out);
	unlink(tmpOutName);
	return 1;
	}
	}
1543
1544	line = line->next;	/* If we find a generic config option which should live at the
1545	}	top of the file, move it there. Old versions of grubby were
1546		probably responsible for putting new images in the wrong
1547		place in front of it anyway. */
1548		if (sawEntry && line->type == LT_GENERIC) {
1549		struct singleLine **l = &cfg->theLines;
1550		struct singleLine **last_nonws = &cfg->theLines;
1551		while (*l) {
1552		if ((*l)->type != LT_WHITESPACE)
1553		last_nonws = &((*l)->next);
1554		l = &((*l)->next);
1555		}
1556		line->next = *last_nonws;
1557		*last_nonws = line;
1558		movedLine = 1;
1559		continue; /* without setting 'last' */
1560		}
1561
1562	if (needs & MAIN_DEFAULT) {	/* If a second line of whitespace happens after a generic
1563	writeDefault(out, cfg->primaryIndent, "=", cfg);	* option which was moved, drop it. */
1564	needs &= ~MAIN_DEFAULT;	if (movedLine && line->type == LT_WHITESPACE
1565	}	&& last->type == LT_WHITESPACE) {
1566		lineFree(line);
1567		free(line);
1568		movedLine = 0;
1569		continue;
1570		}
1571		movedLine = 0;
1572
1573	i = 0;	if (sawEntry) {
1574	while ((entry = findEntryByIndex(cfg, i++))) {	if (!entry->lines)
1575	if (entry->skip) continue;	entry->lines = line;
1576		else
1577		last->next = line;
1578		dbgPrintf("readConfig added %s to %p\n",
1579		getKeyByType(line->type, cfi), entry);
1580
1581	line = entry->lines;	/* we could have seen this outside of an entry... if
1582	while (line) {	* so, we ignore it like any other line we don't grok
1583	if (lineWrite(out, line, cfg->cfi) == -1) {	*/
1584	fprintf(stderr, _("grubby: error writing %s: %s\n"),	if (line->type == LT_ENTRY_END && sawEntry)
1585	tmpOutName, strerror(errno));	sawEntry = 0;
1586	fclose(out);	} else {
1587	unlink(tmpOutName);	if (!cfg->theLines)
1588	return 1;	cfg->theLines = line;
1589	}	else
1590	line = line->next;	last->next = line;
1591	}	dbgPrintf("readConfig added %s to cfg\n",
1592	}	getKeyByType(line->type, cfi));
1593		}
1594
1595	if (tmpOutName) {	last = line;
	if (rename(tmpOutName, outName)) {
	fprintf(stderr, _("grubby: error moving %s to %s: %s\n"),
	tmpOutName, outName, strerror(errno));
	unlink(outName);
	return 1;
1596	}	}
	}
1597
1598	return 0;	free(incoming);
	}
1599
1600	static int numEntries(struct grubConfig *cfg) {	dbgPrintf("defaultLine is %s\n", defaultLine ? "set" : "unset");
1601	int i = 0;	if (defaultLine) {
1602	struct singleEntry * entry;	if (defaultLine->numElements > 2 &&
1603		cfi->defaultSupportSaved &&
1604	entry = cfg->entries;	!strncmp(defaultLine->elements[2].item,
1605	while (entry) {	"\"${saved_entry}\"", 16)) {
1606	if (!entry->skip)	cfg->cfi->defaultIsSaved = 1;
1607	i++;	cfg->defaultImage = DEFAULT_SAVED_GRUB2;
1608	entry = entry->next;	if (cfg->cfi->getEnv) {
1609	}	char *defTitle =
1610	return i;	cfi->getEnv(cfg->cfi, "saved_entry");
1611		if (defTitle) {
1612		int index = 0;
1613		if (isnumber(defTitle)) {
1614		index = atoi(defTitle);
1615		entry =
1616		findEntryByIndex(cfg,
1617		index);
1618		} else {
1619		entry =
1620		findEntryByTitle(cfg,
1621		defTitle,
1622		&index);
1623		}
1624		if (entry)
1625		cfg->defaultImage = index;
1626		}
1627		}
1628		} else if (cfi->defaultIsVariable) {
1629		if (defaultLine->numElements == 2) {
1630		char *value = defaultLine->elements[1].item + 8;
1631		while (*value && (*value == '"' ||
1632		*value == '\'' ||
1633		*value == ' ' ||
1634		*value == '\t'))
1635		value++;
1636		cfg->defaultImage = strtol(value, &end, 10);
1637		while (*end && (*end == '"' || *end == '\'' ||
1638		*end == ' ' || *end == '\t'))
1639		end++;
1640		if (*end)
1641		cfg->defaultImage = NO_DEFAULT_ENTRY;
1642		} else if (defaultLine->numElements == 3) {
1643		char *value = defaultLine->elements[2].item;
1644		while (*value && (*value == '"' ||
1645		*value == '\'' ||
1646		*value == ' ' ||
1647		*value == '\t'))
1648		value++;
1649		cfg->defaultImage = strtol(value, &end, 10);
1650		while (*end && (*end == '"' || *end == '\'' ||
1651		*end == ' ' || *end == '\t'))
1652		end++;
1653		if (*end)
1654		cfg->defaultImage = NO_DEFAULT_ENTRY;
1655		}
1656		} else if (cfi->defaultSupportSaved &&
1657		!strncmp(defaultLine->elements[1].item, "saved",
1658		5)) {
1659		cfg->defaultImage = DEFAULT_SAVED;
1660		} else if (cfi->defaultIsIndex) {
1661		cfg->defaultImage =
1662		strtol(defaultLine->elements[1].item, &end, 10);
1663		if (*end)
1664		cfg->defaultImage = NO_DEFAULT_ENTRY;
1665		} else if (defaultLine->numElements >= 2) {
1666		int i = 0;
1667		while ((entry = findEntryByIndex(cfg, i))) {
1668		for (line = entry->lines; line;
1669		line = line->next)
1670		if (line->type == LT_TITLE)
1671		break;
1672
1673		if (!cfi->titleBracketed) {
1674		if (line && (line->numElements >= 2) &&
1675		!strcmp(defaultLine->elements[1].
1676		item,
1677		line->elements[1].item))
1678		break;
1679		} else if (line) {
1680		if (!strcmp
1681		(defaultLine->elements[1].item,
1682		extractTitle(cfg, line)))
1683		break;
1684		}
1685		i++;
1686		entry = NULL;
1687		}
1688
1689		if (entry) {
1690		cfg->defaultImage = i;
1691		} else {
1692		cfg->defaultImage = NO_DEFAULT_ENTRY;
1693		}
1694		}
1695		} else if (cfg->cfi->defaultIsSaved && cfg->cfi->getEnv) {
1696		char *defTitle = cfi->getEnv(cfg->cfi, "saved_entry");
1697		if (defTitle) {
1698		int index = 0;
1699		if (isnumber(defTitle)) {
1700		index = atoi(defTitle);
1701		entry = findEntryByIndex(cfg, index);
1702		} else {
1703		entry = findEntryByTitle(cfg, defTitle, &index);
1704		}
1705		if (entry)
1706		cfg->defaultImage = index;
1707		}
1708		} else {
1709		cfg->defaultImage = FIRST_ENTRY_INDEX;
1710		}
1711
1712		return cfg;
1713	}	}
1714
1715	static char *findDiskForRoot()	static void writeDefault(FILE * out, char *indent,
1716		char *separator, struct grubConfig *cfg)
1717	{	{
1718	int fd;	struct singleEntry *entry;
1719	char buf[65536];	struct singleLine *line;
1720	char *devname;	int i;
1721	char *chptr;
1722	int rc;	if (!cfg->defaultImage && cfg->flags == GRUB_CONFIG_NO_DEFAULT)
1723		return;
1724	if ((fd = open(_PATH_MOUNTED, O_RDONLY)) < 0) {
1725	fprintf(stderr, "grubby: failed to open %s: %s\n",	if (cfg->defaultImage == DEFAULT_SAVED)
1726	_PATH_MOUNTED, strerror(errno));	fprintf(out, "%sdefault%ssaved\n", indent, separator);
1727	return NULL;	else if (cfg->cfi->defaultIsSaved) {
1728	}	fprintf(out, "%sset default=\"${saved_entry}\"\n", indent);
1729		if (cfg->defaultImage >= FIRST_ENTRY_INDEX && cfg->cfi->setEnv) {
1730		char *title;
1731		int trueIndex, currentIndex;
1732
1733		trueIndex = 0;
1734		currentIndex = 0;
1735
1736		while ((entry = findEntryByIndex(cfg, currentIndex))) {
1737		if (!entry->skip) {
1738		if (trueIndex == cfg->defaultImage) {
1739		break;
1740		}
1741		trueIndex++;
1742		}
1743		currentIndex++;
1744		}
1745		line = getLineByType(LT_MENUENTRY, entry->lines);
1746		if (!line)
1747		line = getLineByType(LT_TITLE, entry->lines);
1748		if (line) {
1749		title = extractTitle(cfg, line);
1750		if (title)
1751		cfg->cfi->setEnv(cfg->cfi,
1752		"saved_entry", title);
1753		}
1754		}
1755		} else if (cfg->defaultImage >= FIRST_ENTRY_INDEX) {
1756		if (cfg->cfi->defaultIsIndex) {
1757		if (cfg->cfi->defaultIsVariable) {
1758		fprintf(out, "%sset default=\"%d\"\n", indent,
1759		cfg->defaultImage);
1760		} else {
1761		fprintf(out, "%sdefault%s%d\n", indent,
1762		separator, cfg->defaultImage);
1763		}
1764		} else {
1765		int image = cfg->defaultImage;
1766
1767	rc = read(fd, buf, sizeof(buf) - 1);	entry = cfg->entries;
1768	if (rc <= 0) {	while (entry && entry->skip)
1769	fprintf(stderr, "grubby: failed to read %s: %s\n",	entry = entry->next;
1770	_PATH_MOUNTED, strerror(errno));
1771	close(fd);	i = 0;
1772	return NULL;	while (entry && i < image) {
1773	}	entry = entry->next;
	close(fd);
	buf[rc] = '\0';
	chptr = buf;
	char *foundanswer = NULL;
	while (chptr && chptr != buf+rc) {
	devname = chptr;
	/*
	* The first column of a mtab entry is the device, but if the entry is a
	* special device it won't start with /, so move on to the next line.
	*/
	if (*devname != '/') {
	chptr = strchr(chptr, '\n');
	if (chptr)
	chptr++;
	continue;
	}
	/* Seek to the next space */
	chptr = strchr(chptr, ' ');
	if (!chptr) {
	fprintf(stderr, "grubby: error parsing %s: %s\n",
	_PATH_MOUNTED, strerror(errno));
	return NULL;
	}
	/*
	* The second column of a mtab entry is the mount point, we are looking
	* for '/' obviously.
	*/
	if (*(++chptr) == '/' && *(++chptr) == ' ') {
	/* remember the last / entry in mtab */
	foundanswer = devname;
	}
	/* Next line */
	chptr = strchr(chptr, '\n');
	if (chptr)
	chptr++;
	}
1774
1775	/* Return the last / entry found */	while (entry && entry->skip)
1776	if (foundanswer) {	entry = entry->next;
1777	chptr = strchr(foundanswer, ' ');	i++;
1778	*chptr = '\0';	}
	return strdup(foundanswer);
	}
1779
1780	return NULL;	if (!entry)
1781	}	return;
1782
1783	void printEntry(struct singleEntry * entry) {	line = getLineByType(LT_TITLE, entry->lines);
	int i;
	struct singleLine * line;
1784
1785	for (line = entry->lines; line; line = line->next) {	if (line && line->numElements >= 2)
1786	fprintf(stderr, "DBG: %s", line->indent);	fprintf(out, "%sdefault%s%s\n", indent,
1787	for (i = 0; i < line->numElements; i++) {	separator, line->elements[1].item);
1788	/* Need to handle this, because we strip the quotes from	else if (line && (line->numElements == 1)
1789	* menuentry when read it. */	&& cfg->cfi->titleBracketed) {
1790	if (line->type == LT_MENUENTRY && i == 1) {	char *title = extractTitle(cfg, line);
1791	if(!isquote(*line->elements[i].item))	if (title) {
1792	fprintf(stderr, "\'%s\'", line->elements[i].item);	fprintf(out, "%sdefault%s%s\n", indent,
1793	else	separator, title);
1794	fprintf(stderr, "%s", line->elements[i].item);	free(title);
1795	fprintf(stderr, "%s", line->elements[i].indent);	}
1796		}
1797	continue;	}
	}
	fprintf(stderr, "%s%s",
	line->elements[i].item, line->elements[i].indent);
1798	}	}
	fprintf(stderr, "\n");
	}
1799	}	}
1800
1801	void notSuitablePrintf(struct singleEntry * entry, const char *fmt, ...)	static int writeConfig(struct grubConfig *cfg, char *outName,
1802		const char *prefix)
1803	{	{
1804	va_list argp;	FILE *out;
1805		struct singleLine *line;
1806	if (!debug)	struct singleEntry *entry;
1807	return;	char *tmpOutName;
1808		int needs = MAIN_DEFAULT;
1809	va_start(argp, fmt);	struct stat sb;
1810	fprintf(stderr, "DBG: Image entry failed: ");	int i;
1811	vfprintf(stderr, fmt, argp);	int rc = 0;
1812	printEntry(entry);
1813	va_end(argp);	if (!strcmp(outName, "-")) {
1814	}	out = stdout;
1815		tmpOutName = NULL;
1816		} else {
1817		if (!lstat(outName, &sb) && S_ISLNK(sb.st_mode)) {
1818		char *buf;
1819		int len = 256;
1820		int rc;
1821
1822		/* most likely the symlink is relative, so change our
1823		directory to the dir of the symlink */
1824		char *dir = strdupa(outName);
1825		rc = chdir(dirname(dir));
1826		do {
1827		buf = alloca(len + 1);
1828		rc = readlink(basename(outName), buf, len);
1829		if (rc == len)
1830		len += 256;
1831		} while (rc == len);
1832
1833		if (rc < 0) {
1834		fprintf(stderr,
1835		_
1836		("grubby: error readlink link %s: %s\n"),
1837		outName, strerror(errno));
1838		return 1;
1839		}
1840
1841	#define beginswith(s, c) ((s) && (s)[0] == (c))	outName = buf;
1842		outName[rc] = '\0';
1843		}
1844
1845	static int endswith(const char *s, char c)	tmpOutName = alloca(strlen(outName) + 2);
1846	{	sprintf(tmpOutName, "%s-", outName);
1847	int slen;	out = fopen(tmpOutName, "w");
1848		if (!out) {
1849		fprintf(stderr, _("grubby: error creating %s: %s\n"),
1850		tmpOutName, strerror(errno));
1851		return 1;
1852		}
1853
1854	if (!s || !s[0])	if (!stat(outName, &sb)) {
1855	return 0;	if (chmod(tmpOutName, sb.st_mode & ~(S_IFMT))) {
1856	slen = strlen(s) - 1;	fprintf(stderr,
1857		_
1858		("grubby: error setting perms on %s: %s\n"),
1859		tmpOutName, strerror(errno));
1860		fclose(out);
1861		unlink(tmpOutName);
1862		return 1;
1863		}
1864		}
1865		}
1866
1867	return s[slen] == c;	line = cfg->theLines;
1868	}	struct keywordTypes *defaultKw = getKeywordByType(LT_DEFAULT, cfg->cfi);
1869		while (line) {
1870		if (line->type == LT_SET_VARIABLE && defaultKw &&
1871		line->numElements == 3 &&
1872		!strcmp(line->elements[1].item, defaultKw->key) &&
1873		!is_special_grub2_variable(line->elements[2].item)) {
1874		writeDefault(out, line->indent,
1875		line->elements[0].indent, cfg);
1876		needs &= ~MAIN_DEFAULT;
1877		} else if (line->type == LT_DEFAULT) {
1878		writeDefault(out, line->indent,
1879		line->elements[0].indent, cfg);
1880		needs &= ~MAIN_DEFAULT;
1881		} else if (line->type == LT_FALLBACK) {
1882		if (cfg->fallbackImage > -1)
1883		fprintf(out, "%s%s%s%d\n", line->indent,
1884		line->elements[0].item,
1885		line->elements[0].indent,
1886		cfg->fallbackImage);
1887		} else {
1888		if (lineWrite(out, line, cfg->cfi) == -1) {
1889		fprintf(stderr,
1890		_("grubby: error writing %s: %s\n"),
1891		tmpOutName, strerror(errno));
1892		fclose(out);
1893		unlink(tmpOutName);
1894		return 1;
1895		}
1896		}
1897
1898	int suitableImage(struct singleEntry * entry, const char * bootPrefix,	line = line->next;
1899	int skipRemoved, int flags) {	}
	struct singleLine * line;
	char * fullName;
	int i;
	char * dev;
	char * rootspec;
	char * rootdev;
1900
1901	if (skipRemoved && entry->skip) {	if (needs & MAIN_DEFAULT) {
1902	notSuitablePrintf(entry, "marked to skip\n");	writeDefault(out, cfg->primaryIndent, "=", cfg);
1903	return 0;	needs &= ~MAIN_DEFAULT;
1904	}	}
1905
1906	line = getLineByType(LT_KERNEL|LT_HYPER, entry->lines);	i = 0;
1907	if (!line) {	while ((entry = findEntryByIndex(cfg, i++))) {
1908	notSuitablePrintf(entry, "no line found\n");	if (entry->skip)
1909	return 0;	continue;
1910	}
1911	if (line->numElements < 2) {	line = entry->lines;
1912	notSuitablePrintf(entry, "line has only %d elements\n",	while (line) {
1913	line->numElements);	if (lineWrite(out, line, cfg->cfi) == -1) {
1914	return 0;	fprintf(stderr,
1915	}	_("grubby: error writing %s: %s\n"),
1916		tmpOutName, strerror(errno));
1917		fclose(out);
1918		unlink(tmpOutName);
1919		return 1;
1920		}
1921		line = line->next;
1922		}
1923		}
1924
1925	if (flags & GRUBBY_BADIMAGE_OKAY) return 1;	if (tmpOutName) {
1926		/* write userspace buffers */
1927		if (fflush(out))
1928		rc = 1;
1929
1930		/* purge the write-back cache with fsync() */
1931		if (fsync(fileno(out)))
1932		rc = 1;
1933
1934		if (fclose(out))
1935		rc = 1;
1936
1937		if (rc == 0 && rename(tmpOutName, outName)) {
1938		unlink(tmpOutName);
1939		rc = 1;
1940		}
1941
1942	fullName = alloca(strlen(bootPrefix) +	/* fsync() the destination directory after rename */
1943	strlen(line->elements[1].item) + 1);	if (rc == 0) {
1944	rootspec = getRootSpecifier(line->elements[1].item);	int dirfd;
1945	int rootspec_offset = rootspec ? strlen(rootspec) : 0;
1946	int hasslash = endswith(bootPrefix, '/') ||	dirfd = open(dirname(strdupa(outName)), O_RDONLY);
1947	beginswith(line->elements[1].item + rootspec_offset, '/');	if (dirfd < 0)
1948	sprintf(fullName, "%s%s%s", bootPrefix, hasslash ? "" : "/",	rc = 1;
1949	line->elements[1].item + rootspec_offset);	else if (fsync(dirfd))
1950	if (access(fullName, R_OK)) {	rc = 1;
	notSuitablePrintf(entry, "access to %s failed\n", fullName);
	return 0;
	}
	for (i = 2; i < line->numElements; i++)
	if (!strncasecmp(line->elements[i].item, "root=", 5)) break;
	if (i < line->numElements) {
	dev = line->elements[i].item + 5;
	} else {
	/* look for a lilo style LT_ROOT line */
	line = getLineByType(LT_ROOT, entry->lines);
1951
1952	if (line && line->numElements >= 2) {	if (dirfd >= 0)
1953	dev = line->elements[1].item;	close(dirfd);
1954	} else {	}
	/* didn't succeed in finding a LT_ROOT, let's try LT_KERNELARGS.
	* grub+multiboot uses LT_MBMODULE for the args, so check that too.
	*/
	line = getLineByType(LT_KERNELARGS|LT_MBMODULE, entry->lines);
	/* failed to find one */
	if (!line) {
	notSuitablePrintf(entry, "no line found\n");
	return 0;
	}
1955
1956	for (i = 1; i < line->numElements; i++)	if (rc == 1)
1957	if (!strncasecmp(line->elements[i].item, "root=", 5)) break;	fprintf(stderr,
1958	if (i < line->numElements)	_("grubby: error flushing data: %m\n"));
	dev = line->elements[i].item + 5;
	else {
	notSuitablePrintf(entry, "no root= entry found\n");
	/* it failed too...  can't find root= */
	return 0;
	}
1959	}	}
	}
1960
1961	dev = getpathbyspec(dev);	return rc;
1962	if (!getpathbyspec(dev)) {	}
	notSuitablePrintf(entry, "can't find blkid entry for %s\n", dev);
	return 0;
	} else
	dev = getpathbyspec(dev);
1963
1964	rootdev = findDiskForRoot();	static int numEntries(struct grubConfig *cfg)
1965	if (!rootdev) {	{
1966	notSuitablePrintf(entry, "can't find root device\n");	int i = 0;
1967	return 0;	struct singleEntry *entry;
	}
1968
1969	if (!getuuidbydev(rootdev) || !getuuidbydev(dev)) {	entry = cfg->entries;
1970	notSuitablePrintf(entry, "uuid missing: rootdev %s, dev %s\n",	while (entry) {
1971	getuuidbydev(rootdev), getuuidbydev(dev));	if (!entry->skip)
1972	free(rootdev);	i++;
1973	return 0;	entry = entry->next;
1974	}	}
1975		return i;
1976		}
1977
1978	if (strcmp(getuuidbydev(rootdev), getuuidbydev(dev))) {	static char *findDiskForRoot()
1979	notSuitablePrintf(entry, "uuid mismatch: rootdev %s, dev %s\n",	{
1980	getuuidbydev(rootdev), getuuidbydev(dev));	int fd;
1981	free(rootdev);	char buf[65536];
1982	return 0;	char *devname;
1983	}	char *chptr;
1984		int rc;
1985
1986		if ((fd = open(_PATH_MOUNTED, O_RDONLY)) < 0) {
1987		fprintf(stderr, "grubby: failed to open %s: %s\n",
1988		_PATH_MOUNTED, strerror(errno));
1989		return NULL;
1990		}
1991
1992		rc = read(fd, buf, sizeof(buf) - 1);
1993		if (rc <= 0) {
1994		fprintf(stderr, "grubby: failed to read %s: %s\n",
1995		_PATH_MOUNTED, strerror(errno));
1996		close(fd);
1997		return NULL;
1998		}
1999		close(fd);
2000		buf[rc] = '\0';
2001		chptr = buf;
2002
2003	free(rootdev);	char *foundanswer = NULL;
2004
2005	return 1;	while (chptr && chptr != buf + rc) {
2006	}	devname = chptr;
2007
2008	/* returns the first match on or after the one pointed to by index (if index	/*
2009	is not NULL) which is not marked as skip */	* The first column of a mtab entry is the device, but if the
2010	struct singleEntry * findEntryByPath(struct grubConfig * config,	* entry is a special device it won't start with /, so move
2011	const char * kernel, const char * prefix,	* on to the next line.
2012	int * index) {	*/
2013	struct singleEntry * entry = NULL;	if (*devname != '/') {
2014	struct singleLine * line;	chptr = strchr(chptr, '\n');
2015	int i;	if (chptr)
2016	char * chptr;	chptr++;
2017	char * rootspec = NULL;	continue;
2018	enum lineType_e checkType = LT_KERNEL;	}
2019
2020	if (isdigit(*kernel)) {	/* Seek to the next space */
2021	int * indexVars = alloca(sizeof(*indexVars) * strlen(kernel));	chptr = strchr(chptr, ' ');
2022		if (!chptr) {
2023		fprintf(stderr, "grubby: error parsing %s: %s\n",
2024		_PATH_MOUNTED, strerror(errno));
2025		return NULL;
2026		}
2027
2028	i = 0;	/*
2029	indexVars[i] = strtol(kernel, &chptr, 10);	* The second column of a mtab entry is the mount point, we
2030	while (*chptr == ',') {	* are looking for '/' obviously.
2031	i++;	*/
2032	kernel = chptr + 1;	if (*(++chptr) == '/' && *(++chptr) == ' ') {
2033	indexVars[i] = strtol(kernel, &chptr, 10);	/* remember the last / entry in mtab */
2034	}	foundanswer = devname;
2035		}
2036
2037	if (*chptr) {	/* Next line */
2038	/* can't parse it, bail */	chptr = strchr(chptr, '\n');
2039	return NULL;	if (chptr)
2040		chptr++;
2041	}	}
2042
2043	indexVars[i + 1] = -1;	/* Return the last / entry found */
2044		if (foundanswer) {
2045	i = 0;	chptr = strchr(foundanswer, ' ');
2046	if (index) {	*chptr = '\0';
2047	while (i < *index) i++;	return strdup(foundanswer);
	if (indexVars[i] == -1) return NULL;
2048	}	}
2049
2050	entry = findEntryByIndex(config, indexVars[i]);	return NULL;
2051	if (!entry) return NULL;	}
	line = getLineByType(LT_KERNEL|LT_HYPER, entry->lines);
	if (!line) return NULL;
2052
2053	if (index) *index = indexVars[i];	void printEntry(struct singleEntry *entry, FILE * f)
2054	return entry;	{
2055	}	int i;
2056		struct singleLine *line;
	if (!strcmp(kernel, "DEFAULT")) {
	if (index && *index > config->defaultImage) {
	entry = NULL;
	} else {
	entry = findEntryByIndex(config, config->defaultImage);
	if (entry && entry->skip)
	entry = NULL;
	else if (index)
	*index = config->defaultImage;
	}
	} else if (!strcmp(kernel, "ALL")) {
	if (index)
	i = *index;
	else
	i = 0;
2057
2058	while ((entry = findEntryByIndex(config, i))) {	for (line = entry->lines; line; line = line->next) {
2059	if (!entry->skip) break;	log_message(f, "DBG: %s", line->indent);
2060	i++;	for (i = 0; i < line->numElements; i++) {
2061	}	/* Need to handle this, because we strip the quotes from
2062		* menuentry when read it. */
2063		if (line->type == LT_MENUENTRY && i == 1) {
2064		if (!isquote(*line->elements[i].item))
2065		log_message(f, "\'%s\'",
2066		line->elements[i].item);
2067		else
2068		log_message(f, "%s",
2069		line->elements[i].item);
2070		log_message(f, "%s", line->elements[i].indent);
2071
2072	if (entry && index)	continue;
2073	*index = i;	}
	} else {
	if (index)
	i = *index;
	else
	i = 0;
2074
2075	if (!strncmp(kernel, "TITLE=", 6)) {	log_message(f, "%s%s",
2076	prefix = "";	line->elements[i].item,
2077	checkType = LT_TITLE|LT_MENUENTRY;	line->elements[i].indent);
	kernel += 6;
	}
	for (entry = findEntryByIndex(config, i); entry; entry = entry->next, i++) {
	if (entry->skip) continue;
	dbgPrintf("findEntryByPath looking for %d %s in %p\n", checkType, kernel, entry);
	/* check all the lines matching checkType */
	for (line = entry->lines; line; line = line->next) {
	line = getLineByType(entry->multiboot && checkType == LT_KERNEL ?
	LT_KERNEL|LT_MBMODULE|LT_HYPER :
	checkType, line);
	if (!line) break;  /* not found in this entry */
	if (line && line->type != LT_MENUENTRY &&
	line->numElements >= 2) {
	rootspec = getRootSpecifier(line->elements[1].item);
	if (!strcmp(line->elements[1].item +
	((rootspec != NULL) ? strlen(rootspec) : 0),
	kernel + strlen(prefix)))
	break;
2078	}	}
2079	if(line->type == LT_MENUENTRY &&	log_message(f, "\n");
	!strcmp(line->elements[1].item, kernel))
	break;
	}
	/* make sure this entry has a kernel identifier; this skips
	* non-Linux boot entries (could find netbsd etc, though, which is
	* unfortunate)
	*/
	if (line && getLineByType(LT_KERNEL|LT_HYPER, entry->lines))
	break; /* found 'im! */
2080	}	}
	if (index) *index = i;
	}
	return entry;
2081	}	}
2082
2083	struct singleEntry * findEntryByIndex(struct grubConfig * cfg, int index) {	void notSuitablePrintf(struct singleEntry *entry, int okay, const char *fmt,
2084	struct singleEntry * entry;	...)
2085		{
2086		static int once;
2087		va_list argp, argq;
2088
2089	entry = cfg->entries;	va_start(argp, fmt);
	while (index && entry) {
	entry = entry->next;
	index--;
	}
2090
2091	return entry;	va_copy(argq, argp);
2092		if (!once) {
2093		log_time(NULL);
2094		log_message(NULL, "command line: %s\n", saved_command_line);
2095		}
2096		log_message(NULL, "DBG: Image entry %s: ",
2097		okay ? "succeeded" : "failed");
2098		log_vmessage(NULL, fmt, argq);
2099
2100		printEntry(entry, NULL);
2101		va_end(argq);
2102
2103		if (!debug) {
2104		once = 1;
2105		va_end(argp);
2106		return;
2107		}
2108
2109		if (okay) {
2110		va_end(argp);
2111		return;
2112		}
2113
2114		if (!once)
2115		log_message(stderr, "DBG: command line: %s\n",
2116		saved_command_line);
2117		once = 1;
2118		fprintf(stderr, "DBG: Image entry failed: ");
2119		vfprintf(stderr, fmt, argp);
2120		printEntry(entry, stderr);
2121		va_end(argp);
2122	}	}
2123
2124	/* Find a good template to use for the new kernel. An entry is	#define beginswith(s, c) ((s) && (s)[0] == (c))
	* good if the kernel and mkinitrd exist (even if the entry
	* is going to be removed). Try and use the default entry, but
	* if that doesn't work just take the first. If we can't find one,
	* bail. */
	struct singleEntry * findTemplate(struct grubConfig * cfg, const char * prefix,
	int * indexPtr, int skipRemoved, int flags) {
	struct singleEntry * entry, * entry2;
	int index;
	if (cfg->defaultImage > -1) {
	entry = findEntryByIndex(cfg, cfg->defaultImage);
	if (entry && suitableImage(entry, prefix, skipRemoved, flags)) {
	if (indexPtr) *indexPtr = cfg->defaultImage;
	return entry;
	}
	}
	index = 0;
	while ((entry = findEntryByIndex(cfg, index))) {
	if (suitableImage(entry, prefix, skipRemoved, flags)) {
	int j;
	for (j = 0; j < index; j++) {
	entry2 = findEntryByIndex(cfg, j);
	if (entry2->skip) index--;
	}
	if (indexPtr) *indexPtr = index;
	return entry;
	}
2125
2126	index++;	static int endswith(const char *s, char c)
2127	}	{
2128		int slen;
2129
2130	fprintf(stderr, _("grubby fatal error: unable to find a suitable template\n"));	if (!s || !s[0])
2131		return 0;
2132		slen = strlen(s) - 1;
2133
2134	return NULL;	return s[slen] == c;
2135	}	}
2136
2137	char * findBootPrefix(void) {	typedef struct {
2138	struct stat sb, sb2;	const char *start;
2139		size_t      chars;
2140	stat("/", &sb);	} field;
	#ifdef __ia64__
	stat("/boot/efi/EFI/redhat/", &sb2);
	#else
	stat("/boot", &sb2);
	#endif
2141
2142	if (sb.st_dev == sb2.st_dev)	static int iscomma(int c)
2143	return strdup("");	{
2144		return c == ',';
2145		}
2146
2147	#ifdef __ia64__	static int isequal(int c)
2148	return strdup("/boot/efi/EFI/redhat/");	{
2149	#else	return c == '=';
	return strdup("/boot");
	#endif
2150	}	}
2151
2152	void markRemovedImage(struct grubConfig * cfg, const char * image,	static field findField(const field *in, typeof(isspace) *isdelim, field *out)
2153	const char * prefix) {	{
2154	struct singleEntry * entry;	field nxt = {};
2155		size_t off = 0;
	if (!image)
	return;
	/* check and see if we're removing the default image */
	if (isdigit(*image)) {
	entry = findEntryByPath(cfg, image, prefix, NULL);
	if(entry)
	entry->skip = 1;
	return;
	}
2156
2157	while ((entry = findEntryByPath(cfg, image, prefix, NULL)))	while (off < in->chars && isdelim(in->start[off]))
2158	entry->skip = 1;	off++;
	}
2159
2160	void setDefaultImage(struct grubConfig * config, int hasNew,	if (off == in->chars)
2161	const char * defaultKernelPath, int newIsDefault,	return nxt;
	const char * prefix, int flags) {
	struct singleEntry * entry, * entry2, * newDefault;
	int i, j;
	if (newIsDefault) {
	config->defaultImage = 0;
	return;
	} else if (defaultKernelPath) {
	i = 0;
	if (findEntryByPath(config, defaultKernelPath, prefix, &i)) {
	config->defaultImage = i;
	} else {
	config->defaultImage = -1;
	return;
	}
	}
2162
2163	/* defaultImage now points to what we'd like to use, but before any order	out->start = &in->start[off];
2164	changes */	out->chars = 0;
	if ((config->defaultImage == DEFAULT_SAVED) ||
	(config->defaultImage == DEFAULT_SAVED_GRUB2))
	/* default is set to saved, we don't want to change it */
	return;
	if (config->defaultImage > -1)
	entry = findEntryByIndex(config, config->defaultImage);
	else
	entry = NULL;
2165
2166	if (entry && !entry->skip) {	while (off + out->chars < in->chars && !isdelim(out->start[out->chars]))
2167	/* we can preserve the default */	out->chars++;
	if (hasNew)
	config->defaultImage++;
	/* count the number of entries erased before this one */
	for (j = 0; j < config->defaultImage; j++) {
	entry2 = findEntryByIndex(config, j);
	if (entry2->skip) config->defaultImage--;
	}
	} else if (hasNew) {
	config->defaultImage = 0;
	} else {
	/* Either we just erased the default (or the default line was bad
	* to begin with) and didn't put a new one in. We'll use the first
	* valid image. */
	newDefault = findTemplate(config, prefix, &config->defaultImage, 1,
	flags);
	if (!newDefault)
	config->defaultImage = -1;
	}
	}
2168
2169	void setFallbackImage(struct grubConfig * config, int hasNew) {	nxt.start = out->start + out->chars;
2170	struct singleEntry * entry, * entry2;	nxt.chars = in->chars - off - out->chars;
2171	int j;	return nxt;
2172		}
	if (config->fallbackImage == -1) return;
	entry = findEntryByIndex(config, config->fallbackImage);
	if (!entry || entry->skip) {
	config->fallbackImage = -1;
	return;
	}
2173
2174	if (hasNew)	static int fieldEquals(const field *in, const char *str)
2175	config->fallbackImage++;	{
2176		return in->chars == strlen(str) &&
2177	/* count the number of entries erased before this one */	strncmp(in->start, str, in->chars) == 0;
	for (j = 0; j < config->fallbackImage; j++) {
	entry2 = findEntryByIndex(config, j);
	if (entry2->skip) config->fallbackImage--;
	}
2178	}	}
2179
2180	void displayEntry(struct singleEntry * entry, const char * prefix, int index) {	/* Parse /proc/mounts to determine the subvolume prefix. */
2181	struct singleLine * line;	static size_t subvolPrefix(const char *str)
2182	char * root = NULL;	{
2183	int i;	FILE *file = NULL;
2184		char *line = NULL;
2185	printf("index=%d\n", index);	size_t prfx = 0;
2186		size_t size = 0;
	line = getLineByType(LT_KERNEL|LT_HYPER, entry->lines);
	if (!line) {
	printf("non linux entry\n");
	return;
	}
2187
2188	if (!strncmp(prefix, line->elements[1].item, strlen(prefix)))	file = fopen(mounts, "r");
2189	printf("kernel=%s\n", line->elements[1].item);	if (!file)
2190	else	return 0;
	printf("kernel=%s%s\n", prefix, line->elements[1].item);
	if (line->numElements >= 3) {
	printf("args=\"");
	i = 2;
	while (i < line->numElements) {
	if (!strncmp(line->elements[i].item, "root=", 5)) {
	root = line->elements[i].item + 5;
	} else {
	printf("%s%s", line->elements[i].item,
	line->elements[i].indent);
	}
2191
2192	i++;	for (ssize_t s; (s = getline(&line, &size, file)) >= 0; ) {
2193	}	field nxt = { line, s };
2194	printf("\"\n");	field dev = {};
2195	} else {	field path = {};
2196	line = getLineByType(LT_KERNELARGS, entry->lines);	field type = {};
2197	if (line) {	field opts = {};
2198	char * s;	field opt = {};
2199
2200	printf("args=\"");	nxt = findField(&nxt, isspace, &dev);
2201	i = 1;	if (!nxt.start)
2202	while (i < line->numElements) {	continue;
	if (!strncmp(line->elements[i].item, "root=", 5)) {
	root = line->elements[i].item + 5;
	} else {
	s = line->elements[i].item;
2203
2204	printf("%s%s", s, line->elements[i].indent);	nxt = findField(&nxt, isspace, &path);
2205	}	if (!nxt.start)
2206		continue;
2207
2208	i++;	nxt = findField(&nxt, isspace, &type);
2209	}	if (!nxt.start)
2210		continue;
2211
2212	s = line->elements[i - 1].indent;	nxt = findField(&nxt, isspace, &opts);
2213	printf("\"\n");	if (!nxt.start)
2214	}	continue;
	}
2215
2216	if (!root) {	if (!fieldEquals(&type, "btrfs"))
2217	line = getLineByType(LT_ROOT, entry->lines);	continue;
	if (line && line->numElements >= 2)
	root=line->elements[1].item;
	}
2218
2219	if (root) {	/* We have found a btrfs mount point. */
	char * s = alloca(strlen(root) + 1);
	strcpy(s, root);
	if (s[strlen(s) - 1] == '"')
	s[strlen(s) - 1] = '\0';
	/* make sure the root doesn't have a trailing " */
	printf("root=%s\n", s);
	}
2220
2221	line = getLineByType(LT_INITRD, entry->lines);	nxt = opts;
2222		while ((nxt = findField(&nxt, iscomma, &opt)).start) {
2223		field key = {};
2224		field val = {};
2225
2226	if (line && line->numElements >= 2) {	opt = findField(&opt, isequal, &key);
2227	if (!strncmp(prefix, line->elements[1].item, strlen(prefix)))	if (!opt.start)
2228	printf("initrd=");	continue;
	else
	printf("initrd=%s", prefix);
2229
2230	for (i = 1; i < line->numElements; i++)	opt = findField(&opt, isequal, &val);
2231	printf("%s%s", line->elements[i].item, line->elements[i].indent);	if (!opt.start)
2232	printf("\n");	continue;
	}
2233
2234	line = getLineByType(LT_TITLE, entry->lines);	if (!fieldEquals(&key, "subvol"))
2235	if (line) {	continue;
	printf("title=%s\n", line->elements[1].item);
	} else {
	char * title;
	line = getLineByType(LT_MENUENTRY, entry->lines);
	title = grub2ExtractTitle(line);
	if (title)
	printf("title=%s\n", title);
	}
	}
2236
2237	int isSuseSystem(void) {	/* We have found a btrfs subvolume mount point. */
	const char * path;
	const static char default_path[] = "/etc/SuSE-release";
2238
2239	if ((path = getenv("GRUBBY_SUSE_RELEASE")) == NULL)	if (strncmp(val.start, str, val.chars))
2240	path = default_path;	continue;
2241
2242	if (!access(path, R_OK))	if (val.start[val.chars - 1] != '/' &&
2243	return 1;	str[val.chars] != '/')
2244	return 0;	continue;
	}
2245
2246	int isSuseGrubConf(const char * path) {	/* The subvolume mount point matches our input. */
	FILE * grubConf;
	char * line = NULL;
	size_t len = 0, res = 0;
	grubConf = fopen(path, "r");
	if (!grubConf) {
	dbgPrintf("Could not open SuSE configuration file '%s'\n", path);
	return 0;
	}
2247
2248	while ((res = getline(&line, &len, grubConf)) != -1) {	if (prfx < val.chars)
2249	if (!strncmp(line, "setup", 5)) {	prfx = val.chars;
2250	fclose(grubConf);	}
	free(line);
	return 1;
2251	}	}
	}
2252
2253	dbgPrintf("SuSE configuration file '%s' does not appear to be valid\n",	dbgPrintf("%s(): str: '%s', prfx: '%s'\n", __FUNCTION__, str, prfx);
	path);
2254
2255	fclose(grubConf);	fclose(file);
2256	free(line);	free(line);
2257	return 0;	return prfx;
2258	}	}
2259
2260	int suseGrubConfGetLba(const char * path, int * lbaPtr) {	int suitableImage(struct singleEntry *entry, const char *bootPrefix,
2261	FILE * grubConf;	int skipRemoved, int flags)
2262	char * line = NULL;	{
2263	size_t res = 0, len = 0;	struct singleLine *line;
2264		char *fullName;
2265	if (!path) return 1;	int i;
2266	if (!lbaPtr) return 1;	char *dev;
2267		size_t rs;
2268	grubConf = fopen(path, "r");	char *rootdev;
	if (!grubConf) return 1;
	while ((res = getline(&line, &len, grubConf)) != -1) {
	if (line[res - 1] == '\n')
	line[res - 1] = '\0';
	else if (len > res)
	line[res] = '\0';
	else {
	line = realloc(line, res + 1);
	line[res] = '\0';
	}
2269
2270	if (!strncmp(line, "setup", 5)) {	if (skipRemoved && entry->skip) {
2271	if (strstr(line, "--force-lba")) {	notSuitablePrintf(entry, 0, "marked to skip\n");
2272	*lbaPtr = 1;	return 0;
	} else {
	*lbaPtr = 0;
	}
	dbgPrintf("lba: %i\n", *lbaPtr);
	break;
2273	}	}
	}
	free(line);
	fclose(grubConf);
	return 0;
	}
2274
2275	int suseGrubConfGetInstallDevice(const char * path, char ** devicePtr) {	line =
2276	FILE * grubConf;	getLineByType(LT_KERNEL | LT_HYPER | LT_KERNEL_EFI | LT_KERNEL_16,
2277	char * line = NULL;	entry->lines);
2278	size_t res = 0, len = 0;	if (!line) {
2279	char * lastParamPtr = NULL;	notSuitablePrintf(entry, 0, "no line found\n");
2280	char * secLastParamPtr = NULL;	return 0;
	char installDeviceNumber = '\0';
	char * bounds = NULL;
	if (!path) return 1;
	if (!devicePtr) return 1;
	grubConf = fopen(path, "r");
	if (!grubConf) return 1;
	while ((res = getline(&line, &len, grubConf)) != -1) {
	if (strncmp(line, "setup", 5))
	continue;
	if (line[res - 1] == '\n')
	line[res - 1] = '\0';
	else if (len > res)
	line[res] = '\0';
	else {
	line = realloc(line, res + 1);
	line[res] = '\0';
2281	}	}
2282		if (line->numElements < 2) {
2283	lastParamPtr = bounds = line + res;	notSuitablePrintf(entry, 0, "line has only %d elements\n",
2284		line->numElements);
2285	/* Last parameter in grub may be an optional IMAGE_DEVICE */	return 0;
	while (!isspace(*lastParamPtr))
	lastParamPtr--;
	lastParamPtr++;
	secLastParamPtr = lastParamPtr - 2;
	dbgPrintf("lastParamPtr: %s\n", lastParamPtr);
	if (lastParamPtr + 3 > bounds) {
	dbgPrintf("lastParamPtr going over boundary");
	fclose(grubConf);
	free(line);
	return 1;
2286	}	}
	if (!strncmp(lastParamPtr, "(hd", 3))
	lastParamPtr += 3;
	dbgPrintf("lastParamPtr: %c\n", *lastParamPtr);
2287
2288	/*	if (flags & GRUBBY_BADIMAGE_OKAY) {
2289	* Second last parameter will decide wether last parameter is	notSuitablePrintf(entry, 1, "\n");
2290	* an IMAGE_DEVICE or INSTALL_DEVICE	return 1;
	*/
	while (!isspace(*secLastParamPtr))
	secLastParamPtr--;
	secLastParamPtr++;
	if (secLastParamPtr + 3 > bounds) {
	dbgPrintf("secLastParamPtr going over boundary");
	fclose(grubConf);
	free(line);
	return 1;
	}
	dbgPrintf("secLastParamPtr: %s\n", secLastParamPtr);
	if (!strncmp(secLastParamPtr, "(hd", 3)) {
	secLastParamPtr += 3;
	dbgPrintf("secLastParamPtr: %c\n", *secLastParamPtr);
	installDeviceNumber = *secLastParamPtr;
	} else {
	installDeviceNumber = *lastParamPtr;
2291	}	}
2292
2293	*devicePtr = malloc(6);	fullName = alloca(strlen(bootPrefix) +
2294	snprintf(*devicePtr, 6, "(hd%c)", installDeviceNumber);	strlen(line->elements[1].item) + 1);
2295	dbgPrintf("installDeviceNumber: %c\n", installDeviceNumber);	rs = getRootSpecifier(line->elements[1].item);
2296	fclose(grubConf);	int hasslash = endswith(bootPrefix, '/') ||
2297	free(line);	beginswith(line->elements[1].item + rs, '/');
2298	return 0;	sprintf(fullName, "%s%s%s", bootPrefix, hasslash ? "" : "/",
2299	}	line->elements[1].item + rs);
2300		if (access(fullName, R_OK)) {
2301		notSuitablePrintf(entry, 0, "access to %s failed\n", fullName);
2302		return 0;
2303		}
2304		for (i = 2; i < line->numElements; i++)
2305		if (!strncasecmp(line->elements[i].item, "root=", 5))
2306		break;
2307		if (i < line->numElements) {
2308		dev = line->elements[i].item + 5;
2309		} else {
2310		/* look for a lilo style LT_ROOT line */
2311		line = getLineByType(LT_ROOT, entry->lines);
2312
2313	free(line);	if (line && line->numElements >= 2) {
2314	fclose(grubConf);	dev = line->elements[1].item;
2315	return 1;	} else {
2316	}	/* didn't succeed in finding a LT_ROOT, let's try
2317		* LT_KERNELARGS.  grub+multiboot uses LT_MBMODULE
2318	int grubGetBootFromDeviceMap(const char * device,	* for the args, so check that too.
2319	char ** bootPtr) {	*/
2320	FILE * deviceMap;	line =
2321	char * line = NULL;	getLineByType(LT_KERNELARGS | LT_MBMODULE,
2322	size_t res = 0, len = 0;	entry->lines);
2323	char * devicePtr;
2324	char * bounds = NULL;	/* failed to find one */
2325	const char * path;	if (!line) {
2326	const static char default_path[] = "/boot/grub/device.map";	notSuitablePrintf(entry, 0, "no line found\n");
2327		return 0;
2328	if (!device) return 1;	}
	if (!bootPtr) return 1;
	if ((path = getenv("GRUBBY_GRUB_DEVICE_MAP")) == NULL)
	path = default_path;
	dbgPrintf("opening grub device.map file from: %s\n", path);
	deviceMap = fopen(path, "r");
	if (!deviceMap)
	return 1;
2329
2330	while ((res = getline(&line, &len, deviceMap)) != -1) {	for (i = 1; i < line->numElements; i++)
2331	if (!strncmp(line, "#", 1))	if (!strncasecmp
2332	continue;	(line->elements[i].item, "root=", 5))
2333		break;
2334	if (line[res - 1] == '\n')	if (i < line->numElements)
2335	line[res - 1] = '\0';	dev = line->elements[i].item + 5;
2336	else if (len > res)	else {
2337	line[res] = '\0';	notSuitablePrintf(entry, 0,
2338	else {	"no root= entry found\n");
2339	line = realloc(line, res + 1);	/* it failed too...  can't find root= */
2340	line[res] = '\0';	return 0;
2341		}
2342		}
2343	}	}
2344
2345	devicePtr = line;	dev = getpathbyspec(dev);
2346	bounds = line + res;	if (!getpathbyspec(dev)) {
2347		notSuitablePrintf(entry, 0, "can't find blkid entry for %s\n",
2348		dev);
2349		return 0;
2350		} else
2351		dev = getpathbyspec(dev);
2352
2353	while ((isspace(*line) && ((devicePtr + 1) <= bounds)))	rootdev = findDiskForRoot();
2354	devicePtr++;	if (!rootdev) {
2355	dbgPrintf("device: %s\n", devicePtr);	notSuitablePrintf(entry, 0, "can't find root device\n");
2356		return 0;
2357		}
2358
2359	if (!strncmp(devicePtr, device, strlen(device))) {	if (!getuuidbydev(rootdev) || !getuuidbydev(dev)) {
2360	devicePtr += strlen(device);	notSuitablePrintf(entry, 0,
2361	while (isspace(*devicePtr) && ((devicePtr + 1) <= bounds))	"uuid missing: rootdev %s, dev %s\n",
2362	devicePtr++;	getuuidbydev(rootdev), getuuidbydev(dev));
2363		free(rootdev);
2364		return 0;
2365		}
2366
2367	*bootPtr = strdup(devicePtr);	if (strcmp(getuuidbydev(rootdev), getuuidbydev(dev))) {
2368	break;	notSuitablePrintf(entry, 0,
2369		"uuid mismatch: rootdev %s, dev %s\n",
2370		getuuidbydev(rootdev), getuuidbydev(dev));
2371		free(rootdev);
2372		return 0;
2373	}	}
	}
2374
2375	free(line);	free(rootdev);
2376	fclose(deviceMap);	notSuitablePrintf(entry, 1, "\n");
2377	return 0;
2378		return 1;
2379	}	}
2380
2381	int suseGrubConfGetBoot(const char * path, char ** bootPtr) {	/* returns the first match on or after the one pointed to by index (if index
2382	char * grubDevice;	is not NULL) which is not marked as skip */
2383		struct singleEntry *findEntryByPath(struct grubConfig *config,
2384		const char *kernel, const char *prefix,
2385		int *index)
2386		{
2387		struct singleEntry *entry = NULL;
2388		struct singleLine *line;
2389		int i;
2390		char *chptr;
2391		enum lineType_e checkType = LT_KERNEL;
2392
2393		if (isdigit(*kernel)) {
2394		int *indexVars = alloca(sizeof(*indexVars) * strlen(kernel));
2395
2396		i = 0;
2397		indexVars[i] = strtol(kernel, &chptr, 10);
2398		while (*chptr == ',') {
2399		i++;
2400		kernel = chptr + 1;
2401		indexVars[i] = strtol(kernel, &chptr, 10);
2402		}
2403
2404	if (suseGrubConfGetInstallDevice(path, &grubDevice))	if (*chptr) {
2405	dbgPrintf("error looking for grub installation device\n");	/* can't parse it, bail */
2406	else	return NULL;
2407	dbgPrintf("grubby installation device: %s\n", grubDevice);	}
	if (grubGetBootFromDeviceMap(grubDevice, bootPtr))
	dbgPrintf("error looking for grub boot device\n");
	else
	dbgPrintf("grubby boot device: %s\n", *bootPtr);
2408
2409	free(grubDevice);	indexVars[i + 1] = -1;
	return 0;
	}
2410
2411	int parseSuseGrubConf(int * lbaPtr, char ** bootPtr) {	i = 0;
2412	/*	if (index) {
2413	* This SuSE grub configuration file at this location is not your average	while (i < *index) {
2414	* grub configuration file, but instead the grub commands used to setup	i++;
2415	* grub on that system.	if (indexVars[i] == -1)
2416	*/	return NULL;
2417	const char * path;	}
2418	const static char default_path[] = "/etc/grub.conf";	}
	if ((path = getenv("GRUBBY_SUSE_GRUB_CONF")) == NULL)
	path = default_path;
	if (!isSuseGrubConf(path)) return 1;
	if (lbaPtr) {
	*lbaPtr = 0;
	if (suseGrubConfGetLba(path, lbaPtr))
	return 1;
	}
2419
2420	if (bootPtr) {	entry = findEntryByIndex(config, indexVars[i]);
2421	*bootPtr = NULL;	if (!entry)
2422	suseGrubConfGetBoot(path, bootPtr);	return NULL;
2423	}
2424		line =
2425		getLineByType(LT_KERNEL | LT_HYPER | LT_KERNEL_EFI |
2426		LT_KERNEL_16, entry->lines);
2427		if (!line)
2428		return NULL;
2429
2430		if (index)
2431		*index = indexVars[i];
2432		return entry;
2433		}
2434
2435		if (!strcmp(kernel, "DEFAULT")) {
2436		if (index && *index > config->defaultImage) {
2437		entry = NULL;
2438		} else {
2439		entry = findEntryByIndex(config, config->defaultImage);
2440		if (entry && entry->skip)
2441		entry = NULL;
2442		else if (index)
2443		*index = config->defaultImage;
2444		}
2445		} else if (!strcmp(kernel, "ALL")) {
2446		if (index)
2447		i = *index;
2448		else
2449		i = 0;
2450
2451	return 0;	while ((entry = findEntryByIndex(config, i))) {
2452	}	if (!entry->skip)
2453		break;
2454		i++;
2455		}
2456
2457	int parseSysconfigGrub(int * lbaPtr, char ** bootPtr) {	if (entry && index)
2458	FILE * in;	*index = i;
2459	char buf[1024];	} else {
2460	char * chptr;	if (index)
2461	char * start;	i = *index;
2462	char * param;	else
2463		i = 0;
	in = fopen("/etc/conf.d/grub", "r");
	if (!in) return 1;
	if (lbaPtr) *lbaPtr = 0;
	if (bootPtr) *bootPtr = NULL;
	while (fgets(buf, sizeof(buf), in)) {
	start = buf;
	while (isspace(*start)) start++;
	if (*start == '#') continue;
	chptr = strchr(start, '=');
	if (!chptr) continue;
	chptr--;
	while (*chptr && isspace(*chptr)) chptr--;
	chptr++;
	*chptr = '\0';
	param = chptr + 1;
	while (*param && isspace(*param)) param++;
	if (*param == '=') {
	param++;
	while (*param && isspace(*param)) param++;
	}
	chptr = param;
	while (*chptr && !isspace(*chptr)) chptr++;
	*chptr = '\0';
	if (!strcmp(start, "forcelba") && !strcmp(param, "1") && lbaPtr)
	*lbaPtr = 1;
	else if (!strcmp(start, "boot") && bootPtr)
	*bootPtr = strdup(param);
	}
2464
2465	fclose(in);	if (!strncmp(kernel, "TITLE=", 6)) {
2466		prefix = "";
2467		checkType = LT_TITLE | LT_MENUENTRY;
2468		kernel += 6;
2469		}
2470
2471	return 0;	for (entry = findEntryByIndex(config, i); entry;
2472	}	entry = entry->next, i++) {
2473		if (entry->skip)
2474		continue;
2475
2476		dbgPrintf("findEntryByPath looking for %d %s in %p\n",
2477		checkType, kernel, entry);
2478
2479		/* check all the lines matching checkType */
2480		for (line = entry->lines; line; line = line->next) {
2481		enum lineType_e ct = checkType;
2482		if (entry->multiboot && checkType == LT_KERNEL)
2483		ct = LT_KERNEL | LT_KERNEL_EFI |
2484		LT_MBMODULE | LT_HYPER |
2485		LT_KERNEL_16;
2486		else if (checkType & LT_KERNEL)
2487		ct = checkType | LT_KERNEL_EFI |
2488		LT_KERNEL_16;
2489		line = getLineByType(ct, line);
2490		if (!line)
2491		break; /* not found in this entry */
2492
2493		if (line && line->type != LT_MENUENTRY &&
2494		line->numElements >= 2) {
2495		if (!strcmp(line->elements[1].item +
2496		getRootSpecifier(
2497		line->elements[1].item),
2498		kernel + strlen(prefix)))
2499		break;
2500		}
2501		if (line->type == LT_MENUENTRY &&
2502		!strcmp(line->elements[1].item, kernel))
2503		break;
2504		}
2505
2506	void dumpSysconfigGrub(void) {	/* make sure this entry has a kernel identifier; this skips
2507	char * boot = NULL;	* non-Linux boot entries (could find netbsd etc, though, which is
2508	int lba;	* unfortunate)
2509		*/
2510	if (isSuseSystem()) {	if (line
2511	if (parseSuseGrubConf(&lba, &boot)) {	&& getLineByType(LT_KERNEL | LT_HYPER |
2512	free(boot);	LT_KERNEL_EFI | LT_KERNEL_16,
2513	return;	entry->lines))
2514	}	break; /* found 'im! */
2515	} else {	}
2516	if (parseSysconfigGrub(&lba, &boot)) {
2517	free(boot);	if (index)
2518	return;	*index = i;
2519	}	}
	}
2520
2521	if (lba) printf("lba\n");	return entry;
	if (boot) {
	printf("boot=%s\n", boot);
	free(boot);
	}
2522	}	}
2523
2524	int displayInfo(struct grubConfig * config, char * kernel,	struct singleEntry *findEntryByTitle(struct grubConfig *cfg, char *title,
2525	const char * prefix) {	int *index)
2526	int i = 0;	{
2527	struct singleEntry * entry;	struct singleEntry *entry;
2528	struct singleLine * line;	struct singleLine *line;
2529		int i;
2530	entry = findEntryByPath(config, kernel, prefix, &i);	char *newtitle;
2531	if (!entry) {
2532	fprintf(stderr, _("grubby: kernel not found\n"));	for (i = 0, entry = cfg->entries; entry; entry = entry->next, i++) {
2533	return 1;	if (index && i < *index)
2534	}	continue;
2535		line = getLineByType(LT_TITLE, entry->lines);
2536	/* this is a horrible hack to support /etc/conf.d/grub; there must	if (!line)
2537	be a better way */	line = getLineByType(LT_MENUENTRY, entry->lines);
2538	if (config->cfi == &grubConfigType) {	if (!line)
2539	dumpSysconfigGrub();	continue;
2540	} else {	newtitle = grub2ExtractTitle(line);
2541	line = getLineByType(LT_BOOT, config->theLines);	if (!newtitle)
2542	if (line && line->numElements >= 1) {	continue;
2543	printf("boot=%s\n", line->elements[1].item);	if (!strcmp(title, newtitle))
2544		break;
2545	}	}
2546
2547	line = getLineByType(LT_LBA, config->theLines);	if (!entry)
2548	if (line) printf("lba\n");	return NULL;
	}
2549
2550	displayEntry(entry, prefix, i);	if (index)
2551		*index = i;
2552		return entry;
2553		}
2554
2555	i++;	struct singleEntry *findEntryByIndex(struct grubConfig *cfg, int index)
2556	while ((entry = findEntryByPath(config, kernel, prefix, &i))) {	{
2557	displayEntry(entry, prefix, i);	struct singleEntry *entry;
	i++;
	}
2558
2559	return 0;	entry = cfg->entries;
2560		while (index && entry) {
2561		entry = entry->next;
2562		index--;
2563		}
2564
2565		return entry;
2566	}	}
2567
2568	struct singleLine * addLineTmpl(struct singleEntry * entry,	/* Find a good template to use for the new kernel. An entry is
2569	struct singleLine * tmplLine,	* good if the kernel and mkinitrd exist (even if the entry
2570	struct singleLine * prevLine,	* is going to be removed). Try and use the default entry, but
2571	const char * val,	* if that doesn't work just take the first. If we can't find one,
2572	struct configFileInfo * cfi)	* bail. */
2573	{	struct singleEntry *findTemplate(struct grubConfig *cfg, const char *prefix,
2574	struct singleLine * newLine = lineDup(tmplLine);	int *indexPtr, int skipRemoved, int flags)
2575		{
2576	if (val) {	struct singleEntry *entry, *entry2;
2577	/* override the inherited value with our own.	int index;
	* This is a little weak because it only applies to elements[1]
	*/
	if (newLine->numElements > 1)
	removeElement(newLine, 1);
	insertElement(newLine, val, 1, cfi);
	/* but try to keep the rootspec from the template... sigh */
	if (tmplLine->type & (LT_HYPER|LT_KERNEL|LT_MBMODULE|LT_INITRD)) {
	char * rootspec = getRootSpecifier(tmplLine->elements[1].item);
	if (rootspec != NULL) {
	free(newLine->elements[1].item);
	newLine->elements[1].item =
	sdupprintf("%s%s", rootspec, val);
	}
	}
	}
2578
2579	dbgPrintf("addLineTmpl(%s)\n", newLine->numElements ?	if (cfg->cfi->defaultIsSaved) {
2580	newLine->elements[0].item : "");	if (cfg->cfi->getEnv) {
2581		char *defTitle =
2582		cfg->cfi->getEnv(cfg->cfi, "saved_entry");
2583		if (defTitle) {
2584		int index = 0;
2585		if (isnumber(defTitle)) {
2586		index = atoi(defTitle);
2587		entry = findEntryByIndex(cfg, index);
2588		} else {
2589		entry =
2590		findEntryByTitle(cfg, defTitle,
2591		&index);
2592		}
2593		if (entry
2594		&& suitableImage(entry, prefix, skipRemoved,
2595		flags)) {
2596		cfg->defaultImage = index;
2597		if (indexPtr)
2598		*indexPtr = index;
2599		return entry;
2600		}
2601		}
2602		}
2603		} else if (cfg->defaultImage >= FIRST_ENTRY_INDEX) {
2604		entry = findEntryByIndex(cfg, cfg->defaultImage);
2605		if (entry && suitableImage(entry, prefix, skipRemoved, flags)) {
2606		if (indexPtr)
2607		*indexPtr = cfg->defaultImage;
2608		return entry;
2609		}
2610		}
2611
2612	if (!entry->lines) {	index = 0;
2613	/* first one on the list */	while ((entry = findEntryByIndex(cfg, index))) {
2614	entry->lines = newLine;	if (suitableImage(entry, prefix, skipRemoved, flags)) {
2615	} else if (prevLine) {	int j, unmodifiedIndex;
2616	/* add after prevLine */
2617	newLine->next = prevLine->next;	unmodifiedIndex = index;
2618	prevLine->next = newLine;
2619	}	for (j = 0; j < unmodifiedIndex; j++) {
2620		entry2 = findEntryByIndex(cfg, j);
2621		if (entry2->skip)
2622		index--;
2623		}
2624		if (indexPtr)
2625		*indexPtr = index;
2626
2627	return newLine;	return entry;
2628	}	}
2629
2630	/* val may be NULL */	index++;
	struct singleLine *  addLine(struct singleEntry * entry,
	struct configFileInfo * cfi,
	enum lineType_e type, char * defaultIndent,
	const char * val) {
	struct singleLine * line, * prev;
	struct keywordTypes * kw;
	struct singleLine tmpl;
	/* NB: This function shouldn't allocate items on the heap, rather on the
	* stack since it calls addLineTmpl which will make copies.
	*/
	if (type == LT_TITLE && cfi->titleBracketed) {
	/* we're doing a bracketed title (zipl) */
	tmpl.type = type;
	tmpl.numElements = 1;
	tmpl.elements = alloca(sizeof(*tmpl.elements));
	tmpl.elements[0].item = alloca(strlen(val)+3);
	sprintf(tmpl.elements[0].item, "[%s]", val);
	tmpl.elements[0].indent = "";
	val = NULL;
	} else if (type == LT_MENUENTRY) {
	char *lineend = "--class gnu-linux --class gnu --class os {";
	if (!val) {
	fprintf(stderr, "Line type LT_MENUENTRY requires a value\n");
	abort();
	}
	kw = getKeywordByType(type, cfi);
	if (!kw) {
	fprintf(stderr, "Looking up keyword for unknown type %d\n", type);
	abort();
	}
	tmpl.indent = "";
	tmpl.type = type;
	tmpl.numElements = 3;
	tmpl.elements = alloca(sizeof(*tmpl.elements) * tmpl.numElements);
	tmpl.elements[0].item = kw->key;
	tmpl.elements[0].indent = alloca(2);
	sprintf(tmpl.elements[0].indent, "%c", kw->nextChar);
	tmpl.elements[1].item = (char *)val;
	tmpl.elements[1].indent = alloca(2);
	sprintf(tmpl.elements[1].indent, "%c", kw->nextChar);
	tmpl.elements[2].item = alloca(strlen(lineend)+1);
	strcpy(tmpl.elements[2].item, lineend);
	tmpl.elements[2].indent = "";
	} else {
	kw = getKeywordByType(type, cfi);
	if (!kw) {
	fprintf(stderr, "Looking up keyword for unknown type %d\n", type);
	abort();
	}
	tmpl.type = type;
	tmpl.numElements = val ? 2 : 1;
	tmpl.elements = alloca(sizeof(*tmpl.elements) * tmpl.numElements);
	tmpl.elements[0].item = kw->key;
	tmpl.elements[0].indent = alloca(2);
	sprintf(tmpl.elements[0].indent, "%c", kw->nextChar);
	if (val) {
	tmpl.elements[1].item = (char *)val;
	tmpl.elements[1].indent = "";
2631	}	}
	}
	/* The last non-empty line gives us the indention to us and the line
	to insert after. Note that comments are considered empty lines, which
	may not be ideal? If there are no lines or we are looking at the
	first line, we use defaultIndent (the first line is normally indented
	differently from the rest) */
	for (line = entry->lines, prev = NULL; line; line = line->next) {
	if (line->numElements) prev = line;
	/* fall back on the last line if prev isn't otherwise set */
	if (!line->next && !prev) prev = line;
	}
2632
2633	struct singleLine *menuEntry;	fprintf(stderr,
2634	menuEntry = getLineByType(LT_MENUENTRY, entry->lines);	_("grubby fatal error: unable to find a suitable template\n"));
	if (tmpl.type == LT_ENTRY_END) {
	if (menuEntry)
	tmpl.indent = menuEntry->indent;
	else
	tmpl.indent = defaultIndent ?: "";
	} else if (tmpl.type != LT_MENUENTRY) {
	if (menuEntry)
	tmpl.indent = "\t";
	else if (prev == entry->lines)
	tmpl.indent = defaultIndent ?: "";
	else
	tmpl.indent = prev->indent;
	}
2635
2636	return addLineTmpl(entry, &tmpl, prev, val, cfi);	return NULL;
2637	}	}
2638
2639	void removeLine(struct singleEntry * entry, struct singleLine * line) {	char *findBootPrefix(void)
2640	struct singleLine * prev;	{
2641	int i;	struct stat sb, sb2;
2642
2643	for (i = 0; i < line->numElements; i++) {	stat("/", &sb);
2644	free(line->elements[i].item);	#ifdef __ia64__
2645	free(line->elements[i].indent);	stat("/boot/efi/EFI/redhat/", &sb2);
2646	}	#else
2647	free(line->elements);	stat("/boot", &sb2);
2648	free(line->indent);	#endif
2649
2650	if (line == entry->lines) {	if (sb.st_dev == sb2.st_dev)
2651	entry->lines = line->next;	return strdup("");
	} else {
	prev = entry->lines;
	while (prev->next != line) prev = prev->next;
	prev->next = line->next;
	}
2652
2653	free(line);	#ifdef __ia64__
2654		return strdup("/boot/efi/EFI/redhat/");
2655		#else
2656		return strdup("/boot");
2657		#endif
2658	}	}
2659
2660	static void requote(struct singleLine *tmplLine, struct configFileInfo * cfi)	void markRemovedImage(struct grubConfig *cfg, const char *image,
2661		const char *prefix)
2662	{	{
2663	struct singleLine newLine = {	struct singleEntry *entry;
	.indent = tmplLine->indent,
	.type = tmplLine->type,
	.next = tmplLine->next,
	};
	int firstQuotedItem = -1;
	int quoteLen = 0;
	int j;
	int element = 0;
	char *c;
	c = malloc(strlen(tmplLine->elements[0].item) + 1);
	strcpy(c, tmplLine->elements[0].item);
	insertElement(&newLine, c, element++, cfi);
	free(c);
	c = NULL;
	for (j = 1; j < tmplLine->numElements; j++) {
	if (firstQuotedItem == -1) {
	quoteLen += strlen(tmplLine->elements[j].item);
	if (isquote(tmplLine->elements[j].item[0])) {
	firstQuotedItem = j;
	quoteLen += strlen(tmplLine->elements[j].indent);
	} else {
	c = malloc(quoteLen + 1);
	strcpy(c, tmplLine->elements[j].item);
	insertElement(&newLine, c, element++, cfi);
	free(c);
	quoteLen = 0;
	}
	} else {
	int itemlen = strlen(tmplLine->elements[j].item);
	quoteLen += itemlen;
	quoteLen += strlen(tmplLine->elements[j].indent);
	if (isquote(tmplLine->elements[j].item[itemlen - 1])) {
	c = malloc(quoteLen + 1);
	c[0] = '\0';
	for (int i = firstQuotedItem; i < j+1; i++) {
	strcat(c, tmplLine->elements[i].item);
	strcat(c, tmplLine->elements[i].indent);
	}
	insertElement(&newLine, c, element++, cfi);
	free(c);
	firstQuotedItem = -1;
	quoteLen = 0;
	}
	}
	}
	while (tmplLine->numElements)
	removeElement(tmplLine, 0);
	if (tmplLine->elements)
	free(tmplLine->elements);
	tmplLine->numElements = newLine.numElements;
	tmplLine->elements = newLine.elements;
	}
	static void insertElement(struct singleLine * line,
	const char * item, int insertHere,
	struct configFileInfo * cfi)
	{
	struct keywordTypes * kw;
	char indent[2] = "";
	/* sanity check */
	if (insertHere > line->numElements) {
	dbgPrintf("insertElement() adjusting insertHere from %d to %d\n",
	insertHere, line->numElements);
	insertHere = line->numElements;
	}
2664
2665	line->elements = realloc(line->elements, (line->numElements + 1) *	if (!image)
2666	sizeof(*line->elements));	return;
	memmove(&line->elements[insertHere+1],
	&line->elements[insertHere],
	(line->numElements - insertHere) *
	sizeof(*line->elements));
	line->elements[insertHere].item = strdup(item);
	kw = getKeywordByType(line->type, cfi);
	if (line->numElements == 0) {
	indent[0] = '\0';
	} else if (insertHere == 0) {
	indent[0] = kw->nextChar;
	} else if (kw->separatorChar != '\0') {
	indent[0] = kw->separatorChar;
	} else {
	indent[0] = ' ';
	}
	if (insertHere > 0 && line->elements[insertHere-1].indent[0] == '\0') {
	/* move the end-of-line forward */
	line->elements[insertHere].indent =
	line->elements[insertHere-1].indent;
	line->elements[insertHere-1].indent = strdup(indent);
	} else {
	line->elements[insertHere].indent = strdup(indent);
	}
2667
2668	line->numElements++;	/* check and see if we're removing the default image */
2669		if (isdigit(*image)) {
2670		entry = findEntryByPath(cfg, image, prefix, NULL);
2671		if (entry)
2672		entry->skip = 1;
2673		return;
2674		}
2675
2676	dbgPrintf("insertElement(%s, '%s%s', %d)\n",	while ((entry = findEntryByPath(cfg, image, prefix, NULL)))
2677	line->elements[0].item,	entry->skip = 1;
	line->elements[insertHere].item,
	line->elements[insertHere].indent,
	insertHere);
2678	}	}
2679
2680	static void removeElement(struct singleLine * line, int removeHere) {	void setDefaultImage(struct grubConfig *config, int isAddingBootEntry,
2681	int i;	const char *defaultKernelPath, int newBootEntryIsDefault,
2682		const char *prefix, int flags,
2683		int newDefaultBootEntryIndex, int newBootEntryIndex)
2684		{
2685		struct singleEntry *bootEntry, *newDefault;
2686		int indexToVerify, firstKernelEntryIndex, currentLookupIndex;
2687
2688	/* sanity check */	/* initialize */
2689	if (removeHere >= line->numElements) return;	currentLookupIndex = FIRST_ENTRY_INDEX;
2690
2691	dbgPrintf("removeElement(%s, %d:%s)\n", line->elements[0].item,	/* handle the two cases where the user explictly picks the default
2692	removeHere, line->elements[removeHere].item);	* boot entry index as it would exist post-modification */
2693
2694	free(line->elements[removeHere].item);	/* Case 1: user chose to make the latest boot entry the default */
2695		if (newBootEntryIsDefault) {
2696		config->defaultImage = newBootEntryIndex;
2697		return;
2698		}
2699
2700	if (removeHere > 1) {	/* Case 2: user picked an arbitrary index as the default boot entry */
2701	/* previous argument gets this argument's post-indentation */	if (newDefaultBootEntryIndex >= FIRST_ENTRY_INDEX) {
2702	free(line->elements[removeHere-1].indent);	indexToVerify = newDefaultBootEntryIndex;
	line->elements[removeHere-1].indent =
	line->elements[removeHere].indent;
	} else {
	free(line->elements[removeHere].indent);
	}
2703
2704	/* now collapse the array, but don't bother to realloc smaller */	/* user chose to make latest boot entry the default */
2705	for (i = removeHere; i < line->numElements - 1; i++)	if (newDefaultBootEntryIndex == newBootEntryIndex) {
2706	line->elements[i] = line->elements[i + 1];	config->defaultImage = newBootEntryIndex;
2707		return;
2708	line->numElements--;	}
	}
	int argMatch(const char * one, const char * two) {
	char * first, * second;
	char * chptr;
	first = strcpy(alloca(strlen(one) + 1), one);
	second = strcpy(alloca(strlen(two) + 1), two);
	chptr = strchr(first, '=');
	if (chptr) *chptr = '\0';
	chptr = strchr(second, '=');
	if (chptr) *chptr = '\0';
	return strcmp(first, second);
	}
	int updateActualImage(struct grubConfig * cfg, const char * image,
	const char * prefix, const char * addArgs,
	const char * removeArgs, int multibootArgs) {
	struct singleEntry * entry;
	struct singleLine * line, * rootLine;
	int index = 0;
	int i, k;
	const char ** newArgs, ** oldArgs;
	const char ** arg;
	int useKernelArgs, useRoot;
	int firstElement;
	int *usedElements;
	int doreplace;
	if (!image) return 0;
	if (!addArgs) {
	newArgs = malloc(sizeof(*newArgs));
	*newArgs = NULL;
	} else {
	if (poptParseArgvString(addArgs, NULL, &newArgs)) {
	fprintf(stderr,
	_("grubby: error separating arguments '%s'\n"), addArgs);
	return 1;
	}
	}
2709
2710	if (!removeArgs) {	/* the user picks the default index based on the
2711	oldArgs = malloc(sizeof(*oldArgs));	* order of the bootloader configuration after
2712	*oldArgs = NULL;	* modification; ensure we are checking for the
2713	} else {	* existence of the correct entry */
2714	if (poptParseArgvString(removeArgs, NULL, &oldArgs)) {	if (newBootEntryIndex < newDefaultBootEntryIndex) {
2715	fprintf(stderr,	if (!config->isModified)
2716	_("grubby: error separating arguments '%s'\n"), removeArgs);	indexToVerify--;
2717	free(newArgs);	}
	return 1;
	}
	}
2718
2719		/* verify the user selected index will exist */
2720		if (findEntryByIndex(config, indexToVerify)) {
2721		config->defaultImage = newDefaultBootEntryIndex;
2722		} else {
2723		config->defaultImage = NO_DEFAULT_ENTRY;
2724		}
2725
2726	useKernelArgs = (getKeywordByType(LT_KERNELARGS, cfg->cfi)	return;
2727	&& (!multibootArgs || cfg->cfi->mbConcatArgs));	}
2728
2729	useRoot = (getKeywordByType(LT_ROOT, cfg->cfi)	/* handle cases where the index value may shift */
	&& !multibootArgs);
2730
2731	for (; (entry = findEntryByPath(cfg, image, prefix, &index)); index++) {	/* check validity of existing default or first-entry-found
2732		selection */
2733		if (defaultKernelPath) {
2734		/* we must initialize this */
2735		firstKernelEntryIndex = 0;
2736		/* user requested first-entry-found */
2737		if (!findEntryByPath(config, defaultKernelPath,
2738		prefix, &firstKernelEntryIndex)) {
2739		/* don't change default if can't find match */
2740		config->defaultImage = NO_DEFAULT_ENTRY;
2741		return;
2742		}
2743
2744	if (multibootArgs && !entry->multiboot)	config->defaultImage = firstKernelEntryIndex;
	continue;
2745
2746	/* Determine where to put the args.  If this config supports	/* this is where we start looking for decrement later */
2747	* LT_KERNELARGS, use that.  Otherwise use	currentLookupIndex = config->defaultImage;
	* LT_HYPER/LT_KERNEL/LT_MBMODULE lines.
	*/
	if (useKernelArgs) {
	line = getLineByType(LT_KERNELARGS, entry->lines);
	if (!line) {
	/* no LT_KERNELARGS, need to add it */
	line = addLine(entry, cfg->cfi, LT_KERNELARGS,
	cfg->secondaryIndent, NULL);
	}
	firstElement = 1;
	} else if (multibootArgs) {
	line = getLineByType(LT_HYPER, entry->lines);
	if (!line) {
	/* a multiboot entry without LT_HYPER? */
	continue;
	}
	firstElement = 2;
2748
2749		if (isAddingBootEntry && !config->isModified &&
2750		(newBootEntryIndex < config->defaultImage)) {
2751		/* increment because new entry added before default */
2752		config->defaultImage++;
2753		}
2754	} else {	} else {
2755	line = getLineByType(LT_KERNEL|LT_MBMODULE, entry->lines);	/* check to see if the default is stored in the environment */
2756	if (!line) {	if (config->defaultImage < FIRST_ENTRY_INDEX) {
2757	/* no LT_KERNEL or LT_MBMODULE in this entry? */	if (config->defaultImage == DEFAULT_SAVED || config->defaultImage == DEFAULT_SAVED_GRUB2)
2758	continue;	{
2759	}	if (config->cfi->defaultIsSaved) {
2760	firstElement = 2;	if (config->cfi->getEnv) {
2761	}	char *defaultTitle = config->cfi->getEnv(config->cfi, "saved_entry");
2762
2763	/* handle the elilo case which does:	if (defaultTitle) {
2764	*   append="hypervisor args -- kernel args"	if (isnumber(defaultTitle)) {
2765	*/	currentLookupIndex = atoi(defaultTitle);
2766	if (entry->multiboot && cfg->cfi->mbConcatArgs) {	} else {
2767	/* this is a multiboot entry, make sure there's	findEntryByTitle(config, defaultTitle, &currentLookupIndex);
2768	* -- on the args line	}
2769	*/	/* set the default Image to an actual index */
2770	for (i = firstElement; i < line->numElements; i++) {	config->defaultImage = currentLookupIndex;
2771	if (!strcmp(line->elements[i].item, "--"))	}
2772	break;	}
2773	}	}
2774	if (i == line->numElements) {	}
2775	/* assume all existing args are kernel args,	} else {
2776	* prepend -- to make it official	/* use pre-existing default entry from the file*/
2777	*/	currentLookupIndex = config->defaultImage;
	insertElement(line, "--", firstElement, cfg->cfi);
	i = firstElement;
	}
	if (!multibootArgs) {
	/* kernel args start after the -- */
	firstElement = i + 1;
	}
	} else if (cfg->cfi->mbConcatArgs) {
	/* this is a non-multiboot entry, remove hyper args */
	for (i = firstElement; i < line->numElements; i++) {
	if (!strcmp(line->elements[i].item, "--"))
	break;
	}
	if (i < line->numElements) {
	/* remove args up to -- */
	while (strcmp(line->elements[firstElement].item, "--"))
	removeElement(line, firstElement);
	/* remove -- */
	removeElement(line, firstElement);
	}
	}
	usedElements = calloc(line->numElements, sizeof(*usedElements));
	for (k = 0, arg = newArgs; *arg; arg++, k++) {
	doreplace = 1;
	for (i = firstElement; i < line->numElements; i++) {
	if (multibootArgs && cfg->cfi->mbConcatArgs &&
	!strcmp(line->elements[i].item, "--"))
	{
	/* reached the end of hyper args, insert here */
	doreplace = 0;
	break;
	}
	if (usedElements[i])
	continue;
	if (!argMatch(line->elements[i].item, *arg)) {
	usedElements[i]=1;
	break;
2778	}	}
	}
2779
2780	if (i < line->numElements && doreplace) {	if (isAddingBootEntry
2781	/* direct replacement */	&& (newBootEntryIndex <= config->defaultImage)) {
2782	free(line->elements[i].item);	config->defaultImage++;
	line->elements[i].item = strdup(*arg);
2783
2784	} else if (useRoot && !strncmp(*arg, "root=/dev/", 10)) {	if (config->isModified) {
2785	/* root= replacement */	currentLookupIndex++;
2786	rootLine = getLineByType(LT_ROOT, entry->lines);	}
	if (rootLine) {
	free(rootLine->elements[1].item);
	rootLine->elements[1].item = strdup(*arg + 5);
	} else {
	rootLine = addLine(entry, cfg->cfi, LT_ROOT,
	cfg->secondaryIndent, *arg + 5);
2787	}	}
	}
	else {
	/* insert/append */
	insertElement(line, *arg, i, cfg->cfi);
	usedElements = realloc(usedElements, line->numElements *
	sizeof(*usedElements));
	memmove(&usedElements[i + 1], &usedElements[i],
	line->numElements - i - 1);
	usedElements[i] = 1;
	/* if we updated a root= here even though there is a
	LT_ROOT available we need to remove the LT_ROOT entry
	(this will happen if we switch from a device to a label) */
	if (useRoot && !strncmp(*arg, "root=", 5)) {
	rootLine = getLineByType(LT_ROOT, entry->lines);
	if (rootLine)
	removeLine(entry, rootLine);
	}
	}
	}
	free(usedElements);
	for (arg = oldArgs; *arg; arg++) {
	for (i = firstElement; i < line->numElements; i++) {
	if (multibootArgs && cfg->cfi->mbConcatArgs &&
	!strcmp(line->elements[i].item, "--"))
	/* reached the end of hyper args, stop here */
	break;
	if (!argMatch(line->elements[i].item, *arg)) {
	removeElement(line, i);
	break;
	}
	}
	/* handle removing LT_ROOT line too */
	if (useRoot && !strncmp(*arg, "root=", 5)) {
	rootLine = getLineByType(LT_ROOT, entry->lines);
	if (rootLine)
	removeLine(entry, rootLine);
	}
	}
	if (line->numElements == 1) {
	/* don't need the line at all (note it has to be a
	LT_KERNELARGS for this to happen */
	removeLine(entry, line);
2788	}	}
	}
2789
2790	free(newArgs);	/* sanity check - is this entry index valid? */
2791	free(oldArgs);	bootEntry = findEntryByIndex(config, currentLookupIndex);
2792
2793	return 0;	if ((bootEntry && bootEntry->skip) || !bootEntry) {
2794	}	/* entry is to be skipped or is invalid */
2795		if (isAddingBootEntry) {
2796		config->defaultImage = newBootEntryIndex;
2797		return;
2798		}
2799		newDefault =
2800		findTemplate(config, prefix, &config->defaultImage, 1,
2801		flags);
2802		if (!newDefault) {
2803		config->defaultImage = NO_DEFAULT_ENTRY;
2804		}
2805
2806	int updateImage(struct grubConfig * cfg, const char * image,	return;
	const char * prefix, const char * addArgs,
	const char * removeArgs,
	const char * addMBArgs, const char * removeMBArgs) {
	int rc = 0;
	if (!image) return rc;
	/* update the main args first... */
	if (addArgs || removeArgs)
	rc = updateActualImage(cfg, image, prefix, addArgs, removeArgs, 0);
	if (rc) return rc;
	/* and now any multiboot args */
	if (addMBArgs || removeMBArgs)
	rc = updateActualImage(cfg, image, prefix, addMBArgs, removeMBArgs, 1);
	return rc;
	}
	int updateInitrd(struct grubConfig * cfg, const char * image,
	const char * prefix, const char * initrd) {
	struct singleEntry * entry;
	struct singleLine * line, * kernelLine, *endLine = NULL;
	int index = 0;
	if (!image) return 0;
	for (; (entry = findEntryByPath(cfg, image, prefix, &index)); index++) {
	kernelLine = getLineByType(LT_KERNEL, entry->lines);
	if (!kernelLine) continue;
	line = getLineByType(LT_INITRD, entry->lines);
	if (line)
	removeLine(entry, line);
	if (prefix) {
	int prefixLen = strlen(prefix);
	if (!strncmp(initrd, prefix, prefixLen))
	initrd += prefixLen;
	}
	endLine = getLineByType(LT_ENTRY_END, entry->lines);
	if (endLine)
	removeLine(entry, endLine);
	line = addLine(entry, cfg->cfi, LT_INITRD, kernelLine->indent, initrd);
	if (!line)
	return 1;
	if (endLine) {
	line = addLine(entry, cfg->cfi, LT_ENTRY_END, "", NULL);
	if (!line)
	return 1;
2807	}	}
2808
2809	break;	currentLookupIndex--;
	}
2810
2811	return 0;	/* decrement index by the total number of entries deleted */
	}
2812
2813	int checkDeviceBootloader(const char * device, const unsigned char * boot) {	for (indexToVerify = currentLookupIndex;
2814	int fd;	indexToVerify >= FIRST_ENTRY_INDEX; indexToVerify--) {
	unsigned char bootSect[512];
	int offset;
	fd = open(device, O_RDONLY);
	if (fd < 0) {
	fprintf(stderr, _("grubby: unable to open %s: %s\n"),
	device, strerror(errno));
	return 1;
	}
2815
2816	if (read(fd, bootSect, 512) != 512) {	bootEntry = findEntryByIndex(config, indexToVerify);
	fprintf(stderr, _("grubby: unable to read %s: %s\n"),
	device, strerror(errno));
	return 1;
	}
	close(fd);
2817
2818	/* first three bytes should match, a jmp short should be in there */	if (bootEntry && bootEntry->skip) {
2819	if (memcmp(boot, bootSect, 3))	config->defaultImage--;
2820	return 0;	}
2821		}
2822		}
2823
2824	if (boot[1] == JMP_SHORT_OPCODE) {	void setFallbackImage(struct grubConfig *config, int hasNew)
2825	offset = boot[2] + 2;	{
2826	} else if (boot[1] == 0xe8 || boot[1] == 0xe9) {	struct singleEntry *entry, *entry2;
2827	offset = (boot[3] << 8) + boot[2] + 2;	int j;
	} else if (boot[0] == JMP_SHORT_OPCODE) {
	offset = boot[1] + 2;
	/*
	* it looks like grub, when copying stage1 into the mbr, patches stage1
	* right after the JMP location, replacing other instructions such as
	* JMPs for NOOPs. So, relax the check a little bit by skipping those
	* different bytes.
	*/
	if ((bootSect[offset + 1] == NOOP_OPCODE)
	&& (bootSect[offset + 2] == NOOP_OPCODE)) {
	offset = offset + 3;
	}
	} else if (boot[0] == 0xe8 || boot[0] == 0xe9) {
	offset = (boot[2] << 8) + boot[1] + 2;
	} else {
	return 0;
	}
2828
2829	if (memcmp(boot + offset, bootSect + offset, CODE_SEG_SIZE))	if (config->fallbackImage == -1)
2830	return 0;	return;
2831
2832		entry = findEntryByIndex(config, config->fallbackImage);
2833		if (!entry || entry->skip) {
2834		config->fallbackImage = -1;
2835		return;
2836		}
2837
2838		if (hasNew)
2839		config->fallbackImage++;
2840
2841	return 2;	/* count the number of entries erased before this one */
2842		for (j = 0; j < config->fallbackImage; j++) {
2843		entry2 = findEntryByIndex(config, j);
2844		if (entry2->skip)
2845		config->fallbackImage--;
2846		}
2847	}	}
2848
2849	int checkLiloOnRaid(char * mdDev, const unsigned char * boot) {	void displayEntry(struct grubConfig *config, struct singleEntry *entry, const char *prefix, int index)
2850	int fd;	{
2851	char buf[65536];	struct singleLine *line;
2852	char * end;	char *root = NULL;
2853	char * chptr;	int i;
2854	char * chptr2;	int j;
	int rc;
2855
2856	/* it's on raid; we need to parse /proc/mdstat and check all of the	printf("index=%d\n", index);
	*raw* devices listed in there */
2857
2858	if (!strncmp(mdDev, "/dev/", 5))	line =
2859	mdDev += 5;	getLineByType(LT_KERNEL | LT_HYPER | LT_KERNEL_EFI | LT_KERNEL_16,
2860		entry->lines);
2861		if (!line) {
2862		printf("non linux entry\n");
2863		return;
2864		}
2865
2866	if ((fd = open("/proc/mdstat", O_RDONLY)) < 0) {	if (!strncmp(prefix, line->elements[1].item, strlen(prefix)))
2867	fprintf(stderr, _("grubby: failed to open /proc/mdstat: %s\n"),	printf("kernel=%s\n", line->elements[1].item);
2868	strerror(errno));	else
2869	return 2;	printf("kernel=%s%s\n", prefix, line->elements[1].item);
	}
2870
2871	rc = read(fd, buf, sizeof(buf) - 1);	if (line->numElements >= 3) {
2872	if (rc < 0 || rc == (sizeof(buf) - 1)) {	printf("args=\"");
2873	fprintf(stderr, _("grubby: failed to read /proc/mdstat: %s\n"),	i = 2;
2874	strerror(errno));	while (i < line->numElements) {
2875	close(fd);	if (!strncmp(line->elements[i].item, "root=", 5)) {
2876	return 2;	root = line->elements[i].item + 5;
2877	}	} else {
2878	close(fd);	printf("%s%s", line->elements[i].item,
2879	buf[rc] = '\0';	line->elements[i].indent);
2880		}
2881
2882	chptr = buf;	i++;
2883	while (*chptr) {	}
2884	end = strchr(chptr, '\n');	printf("\"\n");
2885	if (!end) break;	} else {
2886	*end = '\0';	line = getLineByType(LT_KERNELARGS, entry->lines);
2887		if (line) {
2888		char *s;
2889
2890		printf("args=\"");
2891		i = 1;
2892		while (i < line->numElements) {
2893		if (!strncmp
2894		(line->elements[i].item, "root=", 5)) {
2895		root = line->elements[i].item + 5;
2896		} else {
2897		s = line->elements[i].item;
2898
2899	if (!strncmp(chptr, mdDev, strlen(mdDev)) &&	printf("%s%s", s,
2900	chptr[strlen(mdDev)] == ' ') {	line->elements[i].indent);
2901		}
2902
2903	/* found the device */	i++;
2904	while (*chptr && *chptr != ':') chptr++;	}
	chptr++;
	while (*chptr && isspace(*chptr)) chptr++;
	/* skip the "active" bit */
	while (*chptr && !isspace(*chptr)) chptr++;
	while (*chptr && isspace(*chptr)) chptr++;
	/* skip the raid level */
	while (*chptr && !isspace(*chptr)) chptr++;
	while (*chptr && isspace(*chptr)) chptr++;
	/* everything else is partition stuff */
	while (*chptr) {
	chptr2 = chptr;
	while (*chptr2 && *chptr2 != '[') chptr2++;
	if (!*chptr2) break;
	/* yank off the numbers at the end */
	chptr2--;
	while (isdigit(*chptr2) && chptr2 > chptr) chptr2--;
	chptr2++;
	*chptr2 = '\0';
	/* Better, now we need the /dev/ back. We're done with
	* everything before this point, so we can just put
	* the /dev/ part there. There will always be room. */
	memcpy(chptr - 5, "/dev/", 5);
	rc = checkDeviceBootloader(chptr - 5, boot);
	if (rc != 2) {
	return rc;
	}
	chptr = chptr2 + 1;
	/* skip the [11] bit */
	while (*chptr && !isspace(*chptr)) chptr++;
	/* and move to the next one */
	while (*chptr && isspace(*chptr)) chptr++;
	}
2905
2906	/*  we're good to go */	s = line->elements[i - 1].indent;
2907	return 2;	printf("\"\n");
2908		}
2909	}	}
2910
2911	chptr = end + 1;	if (!root) {
2912	}	line = getLineByType(LT_ROOT, entry->lines);
2913		if (line && line->numElements >= 2)
2914		root = line->elements[1].item;
2915		}
2916
2917	fprintf(stderr,	if (root) {
2918	_("grubby: raid device /dev/%s not found in /proc/mdstat\n"),	char *s = alloca(strlen(root) + 1);
	mdDev);
	return 0;
	}
2919
2920	int checkForLilo(struct grubConfig * config) {	strcpy(s, root);
2921	int fd;	if (s[strlen(s) - 1] == '"')
2922	unsigned char boot[512];	s[strlen(s) - 1] = '\0';
2923	struct singleLine * line;	/* make sure the root doesn't have a trailing " */
2924		printf("root=%s\n", s);
2925	for (line = config->theLines; line; line = line->next)	}
	if (line->type == LT_BOOT) break;
	if (!line) {
	fprintf(stderr,
	_("grubby: no boot line found in lilo configuration\n"));
	return 1;
	}
2926
2927	if (line->numElements != 2) return 1;	line =
2928		getLineByType(LT_INITRD | LT_INITRD_EFI | LT_INITRD_16,
2929		entry->lines);
2930
2931	fd = open("/boot/boot.b", O_RDONLY);	if (line && line->numElements >= 2) {
2932	if (fd < 0) {	if (!strncmp(prefix, line->elements[1].item, strlen(prefix)))
2933	fprintf(stderr, _("grubby: unable to open %s: %s\n"),	printf("initrd=");
2934	"/boot/boot.b", strerror(errno));	else
2935	return 1;	printf("initrd=%s", prefix);
	}
2936
2937	if (read(fd, boot, 512) != 512) {	for (i = 1; i < line->numElements; i++)
2938	fprintf(stderr, _("grubby: unable to read %s: %s\n"),	printf("%s%s", line->elements[i].item,
2939	"/boot/boot.b", strerror(errno));	line->elements[i].indent);
2940	return 1;	printf("\n");
2941	}	}
	close(fd);
2942
2943	if (!strncmp("/dev/md", line->elements[1].item, 7))	line = getLineByType(LT_TITLE, entry->lines);
2944	return checkLiloOnRaid(line->elements[1].item, boot);	if (line) {
2945		char *entryTitle;
2946		/* if we can extractTitle, then it's a zipl config and
2947		* if not then we go ahead with what's existed prior */
2948		entryTitle = extractTitle(config, line);
2949		if (!entryTitle) {
2950		entryTitle=line->elements[1].item;
2951		}
2952		printf("title=%s\n", entryTitle);
2953		} else {
2954		char *title;
2955		line = getLineByType(LT_MENUENTRY, entry->lines);
2956		if (line) {
2957		title = grub2ExtractTitle(line);
2958		if (title)
2959		printf("title=%s\n", title);
2960		}
2961		}
2962
2963	return checkDeviceBootloader(line->elements[1].item, boot);	for (j = 0, line = entry->lines; line; line = line->next) {
2964		if ((line->type & LT_MBMODULE) && line->numElements >= 2) {
2965		if (!strncmp
2966		(prefix, line->elements[1].item, strlen(prefix)))
2967		printf("mbmodule%d=", j);
2968		else
2969		printf("mbmodule%d=%s", j, prefix);
2970
2971		for (i = 1; i < line->numElements; i++)
2972		printf("%s%s", line->elements[i].item,
2973		line->elements[i].indent);
2974		printf("\n");
2975		j++;
2976		}
2977		}
2978	}	}
2979
2980	int checkForGrub2(struct grubConfig * config) {	int isSuseSystem(void)
2981	if (!access("/etc/grub.d/", R_OK))	{
2982	return 2;	const char *path;
2983		const static char default_path[] = "/etc/SuSE-release";
2984
2985	return 1;	if ((path = getenv("GRUBBY_SUSE_RELEASE")) == NULL)
2986	}	path = default_path;
2987
2988	int checkForGrub(struct grubConfig * config) {	if (!access(path, R_OK))
2989	int fd;	return 1;
2990	unsigned char bootSect[512];	return 0;
2991	char * boot;	}
	int onSuse = isSuseSystem();
2992
2993		int isSuseGrubConf(const char *path)
2994		{
2995		FILE *grubConf;
2996		char *line = NULL;
2997		size_t len = 0, res = 0;
2998
2999		grubConf = fopen(path, "r");
3000		if (!grubConf) {
3001		dbgPrintf("Could not open SuSE configuration file '%s'\n",
3002		path);
3003		return 0;
3004		}
3005
3006	if (onSuse) {	while ((res = getline(&line, &len, grubConf)) != -1) {
3007	if (parseSuseGrubConf(NULL, &boot))	if (!strncmp(line, "setup", 5)) {
3008	return 0;	fclose(grubConf);
3009	} else {	free(line);
3010	if (parseSysconfigGrub(NULL, &boot))	return 1;
3011	return 0;	}
3012	}	}
3013
3014	/* assume grub is not installed -- not an error condition */	dbgPrintf("SuSE configuration file '%s' does not appear to be valid\n",
3015	if (!boot)	path);
	return 0;
3016
3017	fd = open("/boot/grub/stage1", O_RDONLY);	fclose(grubConf);
3018	if (fd < 0)	free(line);
	/* this doesn't exist if grub hasn't been installed */
3019	return 0;	return 0;
3020		}
3021
3022	if (read(fd, bootSect, 512) != 512) {	int suseGrubConfGetLba(const char *path, int *lbaPtr)
3023	fprintf(stderr, _("grubby: unable to read %s: %s\n"),	{
3024	"/boot/grub/stage1", strerror(errno));	FILE *grubConf;
3025	close(fd);	char *line = NULL;
3026	return 1;	size_t res = 0, len = 0;
	}
	close(fd);
3027
3028	/* The more elaborate checks do not work on SuSE. The checks done	if (!path)
3029	* seem to be reasonble (at least for now), so just return success	return 1;
3030	*/	if (!lbaPtr)
3031	if (onSuse)	return 1;
	return 2;
3032
3033	return checkDeviceBootloader(boot, bootSect);	grubConf = fopen(path, "r");
3034	}	if (!grubConf)
3035		return 1;
3036
3037	int checkForExtLinux(struct grubConfig * config) {	while ((res = getline(&line, &len, grubConf)) != -1) {
3038	int fd;	if (line[res - 1] == '\n')
3039	unsigned char bootSect[512];	line[res - 1] = '\0';
3040	char * boot;	else if (len > res)
3041	char executable[] = "/boot/extlinux/extlinux";	line[res] = '\0';
3042		else {
3043		line = realloc(line, res + 1);
3044		line[res] = '\0';
3045		}
3046
3047	printf("entered: checkForExtLinux()\n");	if (!strncmp(line, "setup", 5)) {
3048		if (strstr(line, "--force-lba")) {
3049		*lbaPtr = 1;
3050		} else {
3051		*lbaPtr = 0;
3052		}
3053		dbgPrintf("lba: %i\n", *lbaPtr);
3054		break;
3055		}
3056		}
3057
3058	if (parseSysconfigGrub(NULL, &boot))	free(line);
3059		fclose(grubConf);
3060	return 0;	return 0;
3061		}
3062
3063	/* assume grub is not installed -- not an error condition */	int suseGrubConfGetInstallDevice(const char *path, char **devicePtr)
3064	if (!boot)	{
3065	return 0;	FILE *grubConf;
3066		char *line = NULL;
3067		size_t res = 0, len = 0;
3068		char *lastParamPtr = NULL;
3069		char *secLastParamPtr = NULL;
3070		char installDeviceNumber = '\0';
3071		char *bounds = NULL;
3072
3073	fd = open(executable, O_RDONLY);	if (!path)
3074	if (fd < 0)	return 1;
3075	/* this doesn't exist if grub hasn't been installed */	if (!devicePtr)
3076	return 0;	return 1;
3077
3078	if (read(fd, bootSect, 512) != 512) {	grubConf = fopen(path, "r");
3079	fprintf(stderr, _("grubby: unable to read %s: %s\n"),	if (!grubConf)
3080	executable, strerror(errno));	return 1;
	return 1;
	}
	close(fd);
3081
3082	return checkDeviceBootloader(boot, bootSect);	while ((res = getline(&line, &len, grubConf)) != -1) {
3083	}	if (strncmp(line, "setup", 5))
3084		continue;
3085
3086		if (line[res - 1] == '\n')
3087		line[res - 1] = '\0';
3088		else if (len > res)
3089		line[res] = '\0';
3090		else {
3091		line = realloc(line, res + 1);
3092		line[res] = '\0';
3093		}
3094
3095	int checkForYaboot(struct grubConfig * config) {	lastParamPtr = bounds = line + res;
	/*
	* This is a simplistic check that we consider good enough for own puporses
	*
	* If we were to properly check if yaboot is *installed* we'd need to:
	* 1) get the system boot device (LT_BOOT)
	* 2) considering it's a raw filesystem, check if the yaboot binary matches
	*    the content on the boot device
	* 3) if not, copy the binary to a temporary file and run "addnote" on it
	* 4) check again if binary and boot device contents match
	*/
	if (!access("/etc/yaboot.conf", R_OK))
	return 2;
3096
3097	return 1;	/* Last parameter in grub may be an optional IMAGE_DEVICE */
3098	}	while (!isspace(*lastParamPtr))
3099		lastParamPtr--;
3100		lastParamPtr++;
3101
3102		secLastParamPtr = lastParamPtr - 2;
3103		dbgPrintf("lastParamPtr: %s\n", lastParamPtr);
3104
3105		if (lastParamPtr + 3 > bounds) {
3106		dbgPrintf("lastParamPtr going over boundary");
3107		fclose(grubConf);
3108		free(line);
3109		return 1;
3110		}
3111		if (!strncmp(lastParamPtr, "(hd", 3))
3112		lastParamPtr += 3;
3113		dbgPrintf("lastParamPtr: %c\n", *lastParamPtr);
3114
3115		/*
3116		* Second last parameter will decide wether last parameter is
3117		* an IMAGE_DEVICE or INSTALL_DEVICE
3118		*/
3119		while (!isspace(*secLastParamPtr))
3120		secLastParamPtr--;
3121		secLastParamPtr++;
3122
3123		if (secLastParamPtr + 3 > bounds) {
3124		dbgPrintf("secLastParamPtr going over boundary");
3125		fclose(grubConf);
3126		free(line);
3127		return 1;
3128		}
3129		dbgPrintf("secLastParamPtr: %s\n", secLastParamPtr);
3130		if (!strncmp(secLastParamPtr, "(hd", 3)) {
3131		secLastParamPtr += 3;
3132		dbgPrintf("secLastParamPtr: %c\n", *secLastParamPtr);
3133		installDeviceNumber = *secLastParamPtr;
3134		} else {
3135		installDeviceNumber = *lastParamPtr;
3136		}
3137
3138	int checkForElilo(struct grubConfig * config) {	*devicePtr = malloc(6);
3139	if (!access("/etc/elilo.conf", R_OK))	snprintf(*devicePtr, 6, "(hd%c)", installDeviceNumber);
3140	return 2;	dbgPrintf("installDeviceNumber: %c\n", installDeviceNumber);
3141		fclose(grubConf);
3142		free(line);
3143		return 0;
3144		}
3145
3146	return 1;	free(line);
3147		fclose(grubConf);
3148		return 1;
3149	}	}
3150
3151	static char * getRootSpecifier(char * str) {	int grubGetBootFromDeviceMap(const char *device, char **bootPtr)
3152	char * idx, * rootspec = NULL;	{
3153		FILE *deviceMap;
3154		char *line = NULL;
3155		size_t res = 0, len = 0;
3156		char *devicePtr;
3157		char *bounds = NULL;
3158		const char *path;
3159		const static char default_path[] = "/boot/grub/device.map";
3160
3161	if (*str == '(') {	if (!device)
3162	idx = rootspec = strdup(str);	return 1;
3163	while(*idx && (*idx != ')') && (!isspace(*idx))) idx++;	if (!bootPtr)
3164	*(++idx) = '\0';	return 1;
	}
	return rootspec;
	}
3165
3166	static char * getInitrdVal(struct grubConfig * config,	if ((path = getenv("GRUBBY_GRUB_DEVICE_MAP")) == NULL)
3167	const char * prefix, struct singleLine *tmplLine,	path = default_path;
	const char * newKernelInitrd,
	const char ** extraInitrds, int extraInitrdCount)
	{
	char *initrdVal, *end;
	int i;
	size_t totalSize;
	size_t prefixLen;
	char separatorChar;
	prefixLen = strlen(prefix);
	totalSize = strlen(newKernelInitrd) - prefixLen + 1 /* \0 */;
	for (i = 0; i < extraInitrdCount; i++) {
	totalSize += sizeof(separatorChar);
	totalSize += strlen(extraInitrds[i]) - prefixLen;
	}
3168
3169	initrdVal = end = malloc(totalSize);	dbgPrintf("opening grub device.map file from: %s\n", path);
3170		deviceMap = fopen(path, "r");
3171		if (!deviceMap)
3172		return 1;
3173
3174	end = stpcpy (end, newKernelInitrd + prefixLen);	while ((res = getline(&line, &len, deviceMap)) != -1) {
3175		if (!strncmp(line, "#", 1))
3176		continue;
3177
3178		if (line[res - 1] == '\n')
3179		line[res - 1] = '\0';
3180		else if (len > res)
3181		line[res] = '\0';
3182		else {
3183		line = realloc(line, res + 1);
3184		line[res] = '\0';
3185		}
3186
3187	separatorChar = getKeywordByType(LT_INITRD, config->cfi)->separatorChar;	devicePtr = line;
3188	for (i = 0; i < extraInitrdCount; i++) {	bounds = line + res;
	const char *extraInitrd;
	int j;
3189
3190	extraInitrd = extraInitrds[i] + prefixLen;	while ((isspace(*line) && ((devicePtr + 1) <= bounds)))
3191	/* Don't add entries that are already there */	devicePtr++;
3192	if (tmplLine != NULL) {	dbgPrintf("device: %s\n", devicePtr);
3193	for (j = 2; j < tmplLine->numElements; j++)
3194	if (strcmp(extraInitrd, tmplLine->elements[j].item) == 0)	if (!strncmp(devicePtr, device, strlen(device))) {
3195	break;	devicePtr += strlen(device);
3196		while (isspace(*devicePtr)
3197		&& ((devicePtr + 1) <= bounds))
3198		devicePtr++;
3199
3200	if (j != tmplLine->numElements)	*bootPtr = strdup(devicePtr);
3201	continue;	break;
3202		}
3203	}	}
3204
3205	*end++ = separatorChar;	free(line);
3206	end = stpcpy(end, extraInitrd);	fclose(deviceMap);
3207	}	return 0;
	return initrdVal;
3208	}	}
3209
3210	int addNewKernel(struct grubConfig * config, struct singleEntry * template,	int suseGrubConfGetBoot(const char *path, char **bootPtr)
3211	const char * prefix,	{
3212	const char * newKernelPath, const char * newKernelTitle,	char *grubDevice;
	const char * newKernelArgs, const char * newKernelInitrd,
	const char ** extraInitrds, int extraInitrdCount,
	const char * newMBKernel, const char * newMBKernelArgs) {
	struct singleEntry * new;
	struct singleLine * newLine = NULL, * tmplLine = NULL, * masterLine = NULL;
	int needs;
	char * chptr;
	if (!newKernelPath) return 0;
	/* if the newKernelTitle is too long silently munge it into something
	* we can live with. truncating is first check, then we'll just mess with
	* it until it looks better */
	if (config->cfi->maxTitleLength &&
	(strlen(newKernelTitle) > config->cfi->maxTitleLength)) {
	char * buf = alloca(config->cfi->maxTitleLength + 7);
	char * numBuf = alloca(config->cfi->maxTitleLength + 1);
	int i = 1;
3213
3214	sprintf(buf, "TITLE=%.*s", config->cfi->maxTitleLength, newKernelTitle);	if (suseGrubConfGetInstallDevice(path, &grubDevice))
3215	while (findEntryByPath(config, buf, NULL, NULL)) {	dbgPrintf("error looking for grub installation device\n");
3216	sprintf(numBuf, "%d", i++);	else
3217	strcpy(buf + strlen(buf) - strlen(numBuf), numBuf);	dbgPrintf("grubby installation device: %s\n", grubDevice);
	}
3218
3219	newKernelTitle = buf + 6;	if (grubGetBootFromDeviceMap(grubDevice, bootPtr))
3220	}	dbgPrintf("error looking for grub boot device\n");
3221		else
3222		dbgPrintf("grubby boot device: %s\n", *bootPtr);
3223
3224	new = malloc(sizeof(*new));	free(grubDevice);
3225	new->skip = 0;	return 0;
3226	new->multiboot = 0;	}
3227	new->next = config->entries;
3228	new->lines = NULL;	int parseSuseGrubConf(int *lbaPtr, char **bootPtr)
3229	config->entries = new;	{
3230		/*
3231	/* copy/update from the template */	* This SuSE grub configuration file at this location is not your
3232	needs = NEED_KERNEL | NEED_TITLE;	* average grub configuration file, but instead the grub commands
3233	if (newKernelInitrd)	* used to setup grub on that system.
3234	needs |= NEED_INITRD;	*/
3235	if (newMBKernel) {	const char *path;
3236	needs |= NEED_MB;	const static char default_path[] = "/etc/grub.conf";
3237	new->multiboot = 1;
3238	}	if ((path = getenv("GRUBBY_SUSE_GRUB_CONF")) == NULL)
3239		path = default_path;
3240
3241		if (!isSuseGrubConf(path))
3242		return 1;
3243
3244		if (lbaPtr) {
3245		*lbaPtr = 0;
3246		if (suseGrubConfGetLba(path, lbaPtr))
3247		return 1;
3248		}
3249
3250		if (bootPtr) {
3251		*bootPtr = NULL;
3252		suseGrubConfGetBoot(path, bootPtr);
3253		}
3254
3255		return 0;
3256		}
3257
3258		int parseSysconfigGrub(int *lbaPtr, char **bootPtr)
3259		{
3260		FILE *in;
3261		char buf[1024];
3262		char *chptr;
3263		char *start;
3264		char *param;
3265
3266		in = fopen("/etc/sysconfig/grub", "r");
3267		if (!in)
3268		return 1;
3269
3270		if (lbaPtr)
3271		*lbaPtr = 0;
3272		if (bootPtr)
3273		*bootPtr = NULL;
3274
3275		while (fgets(buf, sizeof(buf), in)) {
3276		start = buf;
3277		while (isspace(*start))
3278		start++;
3279		if (*start == '#')
3280		continue;
3281
3282		chptr = strchr(start, '=');
3283		if (!chptr)
3284		continue;
3285		chptr--;
3286		while (*chptr && isspace(*chptr))
3287		chptr--;
3288		chptr++;
3289		*chptr = '\0';
3290
3291		param = chptr + 1;
3292		while (*param && isspace(*param))
3293		param++;
3294		if (*param == '=') {
3295		param++;
3296		while (*param && isspace(*param))
3297		param++;
3298		}
3299
3300		chptr = param;
3301		while (*chptr && !isspace(*chptr))
3302		chptr++;
3303		*chptr = '\0';
3304
3305		if (!strcmp(start, "forcelba") && !strcmp(param, "1") && lbaPtr)
3306		*lbaPtr = 1;
3307		else if (!strcmp(start, "boot") && bootPtr)
3308		*bootPtr = strdup(param);
3309		}
3310
3311		fclose(in);
3312
3313		return 0;
3314		}
3315
3316		void dumpSysconfigGrub(void)
3317		{
3318		char *boot = NULL;
3319		int lba;
3320
3321		if (isSuseSystem()) {
3322		if (parseSuseGrubConf(&lba, &boot)) {
3323		free(boot);
3324		return;
3325		}
3326		} else {
3327		if (parseSysconfigGrub(&lba, &boot)) {
3328		free(boot);
3329		return;
3330		}
3331		}
3332
3333		if (lba)
3334		printf("lba\n");
3335		if (boot) {
3336		printf("boot=%s\n", boot);
3337		free(boot);
3338		}
3339		}
3340
3341		int displayInfo(struct grubConfig *config, char *kernel, const char *prefix)
3342		{
3343		int i = 0;
3344		struct singleEntry *entry;
3345		struct singleLine *line;
3346
3347		entry = findEntryByPath(config, kernel, prefix, &i);
3348		if (!entry) {
3349		fprintf(stderr, _("grubby: kernel not found\n"));
3350		return 1;
3351		}
3352
3353		/* this is a horrible hack to support /etc/sysconfig/grub; there must
3354		be a better way */
3355		if (config->cfi == &grubConfigType) {
3356		dumpSysconfigGrub();
3357		} else {
3358		line = getLineByType(LT_BOOT, config->theLines);
3359		if (line && line->numElements >= 1) {
3360		printf("boot=%s\n", line->elements[1].item);
3361		}
3362
3363		line = getLineByType(LT_LBA, config->theLines);
3364		if (line)
3365		printf("lba\n");
3366		}
3367
3368		displayEntry(config, entry, prefix, i);
3369
3370		i++;
3371		while ((entry = findEntryByPath(config, kernel, prefix, &i))) {
3372		displayEntry(config, entry, prefix, i);
3373		i++;
3374		}
3375
3376		return 0;
3377		}
3378
3379		struct singleLine *addLineTmpl(struct singleEntry *entry,
3380		struct singleLine *tmplLine,
3381		struct singleLine *prevLine,
3382		const char *val, struct configFileInfo *cfi)
3383		{
3384		struct singleLine *newLine = lineDup(tmplLine);
3385
3386		if (isEfi && cfi == &grub2ConfigType) {
3387		enum lineType_e old = newLine->type;
3388		newLine->type = preferredLineType(newLine->type, cfi);
3389		if (old != newLine->type)
3390		newLine->elements[0].item =
3391		getKeyByType(newLine->type, cfi);
3392		}
3393
3394		if (val) {
3395		/* override the inherited value with our own.
3396		* This is a little weak because it only applies to elements[1]
3397		*/
3398		if (newLine->numElements > 1)
3399		removeElement(newLine, 1);
3400		insertElement(newLine, val, 1, cfi);
3401
3402		/* but try to keep the rootspec from the template... sigh */
3403		if (tmplLine->
3404		type & (LT_HYPER | LT_KERNEL | LT_MBMODULE | LT_INITRD |
3405		LT_KERNEL_EFI | LT_INITRD_EFI | LT_KERNEL_16 |
3406		LT_INITRD_16)) {
3407		const char *prfx = tmplLine->elements[1].item;
3408		size_t rs = getRootSpecifier(prfx);
3409		if (isinitrd(tmplLine->type)) {
3410		for (struct singleLine *l = entry->lines;
3411		rs == 0 && l; l = l->next) {
3412		if (iskernel(l->type)) {
3413		prfx = l->elements[1].item;
3414		rs = getRootSpecifier(prfx);
3415		break;
3416		}
3417		}
3418		}
3419		if (rs > 0) {
3420		free(newLine->elements[1].item);
3421		newLine->elements[1].item = sdupprintf(
3422		"%.*s%s", (int) rs, prfx, val);
3423		}
3424		}
3425		}
3426
3427		dbgPrintf("addLineTmpl(%s)\n", newLine->numElements ?
3428		newLine->elements[0].item : "");
3429
3430		if (!entry->lines) {
3431		/* first one on the list */
3432		entry->lines = newLine;
3433		} else if (prevLine) {
3434		/* add after prevLine */
3435		newLine->next = prevLine->next;
3436		prevLine->next = newLine;
3437		}
3438
3439		return newLine;
3440		}
3441
3442		/* val may be NULL */
3443		struct singleLine *addLine(struct singleEntry *entry,
3444		struct configFileInfo *cfi,
3445		enum lineType_e type, char *defaultIndent,
3446		const char *val)
3447		{
3448		struct singleLine *line, *prev;
3449		struct keywordTypes *kw;
3450		struct singleLine tmpl;
3451
3452		/* NB: This function shouldn't allocate items on the heap, rather on
3453		* the stack since it calls addLineTmpl which will make copies.
3454		*/
3455		if (type == LT_TITLE && cfi->titleBracketed) {
3456		/* we're doing a bracketed title (zipl) */
3457		tmpl.type = type;
3458		tmpl.numElements = 1;
3459		tmpl.elements = alloca(sizeof(*tmpl.elements));
3460		tmpl.elements[0].item = alloca(strlen(val) + 3);
3461		sprintf(tmpl.elements[0].item, "[%s]", val);
3462		tmpl.elements[0].indent = "";
3463		val = NULL;
3464		} else if (type == LT_MENUENTRY) {
3465		char *lineend = "--class gnu-linux --class gnu --class os {";
3466		if (!val) {
3467		fprintf(stderr,
3468		"Line type LT_MENUENTRY requires a value\n");
3469		abort();
3470		}
3471		kw = getKeywordByType(type, cfi);
3472		if (!kw) {
3473		fprintf(stderr,
3474		"Looking up keyword for unknown type %d\n",
3475		type);
3476		abort();
3477		}
3478		tmpl.indent = "";
3479		tmpl.type = type;
3480		tmpl.numElements = 3;
3481		tmpl.elements =
3482		alloca(sizeof(*tmpl.elements) * tmpl.numElements);
3483		tmpl.elements[0].item = kw->key;
3484		tmpl.elements[0].indent = alloca(2);
3485		sprintf(tmpl.elements[0].indent, "%c", kw->nextChar);
3486		tmpl.elements[1].item = (char *)val;
3487		tmpl.elements[1].indent = alloca(2);
3488		sprintf(tmpl.elements[1].indent, "%c", kw->nextChar);
3489		tmpl.elements[2].item = alloca(strlen(lineend) + 1);
3490		strcpy(tmpl.elements[2].item, lineend);
3491		tmpl.elements[2].indent = "";
3492		} else {
3493		kw = getKeywordByType(type, cfi);
3494		if (!kw) {
3495		fprintf(stderr,
3496		"Looking up keyword for unknown type %d\n",
3497		type);
3498		abort();
3499		}
3500		tmpl.type = type;
3501		tmpl.numElements = val ? 2 : 1;
3502		tmpl.elements =
3503		alloca(sizeof(*tmpl.elements) * tmpl.numElements);
3504		tmpl.elements[0].item = kw->key;
3505		tmpl.elements[0].indent = alloca(2);
3506		sprintf(tmpl.elements[0].indent, "%c", kw->nextChar);
3507		if (val) {
3508		tmpl.elements[1].item = (char *)val;
3509		tmpl.elements[1].indent = "";
3510		}
3511		}
3512
3513		/* The last non-empty line gives us the indention to us and the line
3514		* to insert after. Note that comments are considered empty lines,
3515		* which may not be ideal? If there are no lines or we are looking at
3516		* the first line, we use defaultIndent (the first line is normally
3517		* indented differently from the rest) */
3518		for (line = entry->lines, prev = NULL; line; line = line->next) {
3519		if (line->numElements)
3520		prev = line;
3521		/* fall back on the last line if prev isn't otherwise set */
3522		if (!line->next && !prev)
3523		prev = line;
3524		}
3525
3526		struct singleLine *menuEntry;
3527		menuEntry = getLineByType(LT_MENUENTRY, entry->lines);
3528		if (tmpl.type == LT_ENTRY_END) {
3529		if (menuEntry)
3530		tmpl.indent = menuEntry->indent;
3531		else
3532		tmpl.indent = defaultIndent ? : "";
3533		} else if (tmpl.type != LT_MENUENTRY) {
3534		if (menuEntry)
3535		tmpl.indent = "\t";
3536		else if (prev == entry->lines)
3537		tmpl.indent = defaultIndent ? : "";
3538		else
3539		tmpl.indent = prev->indent;
3540		}
3541
3542		return addLineTmpl(entry, &tmpl, prev, val, cfi);
3543		}
3544
3545		void removeLine(struct singleEntry *entry, struct singleLine *line)
3546		{
3547		struct singleLine *prev;
3548		int i;
3549
3550		for (i = 0; i < line->numElements; i++) {
3551		free(line->elements[i].item);
3552		free(line->elements[i].indent);
3553		}
3554		free(line->elements);
3555		free(line->indent);
3556
3557		if (line == entry->lines) {
3558		entry->lines = line->next;
3559		} else {
3560		prev = entry->lines;
3561		while (prev->next != line)
3562		prev = prev->next;
3563		prev->next = line->next;
3564		}
3565
3566		free(line);
3567		}
3568
3569		static void requote(struct singleLine *tmplLine, struct configFileInfo *cfi)
3570		{
3571		struct singleLine newLine = {
3572		.indent = tmplLine->indent,
3573		.type = tmplLine->type,
3574		.next = tmplLine->next,
3575		};
3576		int firstQuotedItem = -1;
3577		int quoteLen = 0;
3578		int j;
3579		int element = 0;
3580		char *c;
3581
3582		c = malloc(strlen(tmplLine->elements[0].item) + 1);
3583		strcpy(c, tmplLine->elements[0].item);
3584		insertElement(&newLine, c, element++, cfi);
3585		free(c);
3586		c = NULL;
3587
3588		for (j = 1; j < tmplLine->numElements; j++) {
3589		if (firstQuotedItem == -1) {
3590		quoteLen += strlen(tmplLine->elements[j].item);
3591
3592		if (isquote(tmplLine->elements[j].item[0])) {
3593		firstQuotedItem = j;
3594		quoteLen +=
3595		strlen(tmplLine->elements[j].indent);
3596		} else {
3597		c = malloc(quoteLen + 1);
3598		strcpy(c, tmplLine->elements[j].item);
3599		insertElement(&newLine, c, element++, cfi);
3600		free(c);
3601		quoteLen = 0;
3602		}
3603		} else {
3604		int itemlen = strlen(tmplLine->elements[j].item);
3605		quoteLen += itemlen;
3606		quoteLen += strlen(tmplLine->elements[j].indent);
3607
3608		if (isquote(tmplLine->elements[j].item[itemlen - 1])) {
3609		c = malloc(quoteLen + 1);
3610		c[0] = '\0';
3611		for (int i = firstQuotedItem; i < j + 1; i++) {
3612		strcat(c, tmplLine->elements[i].item);
3613		strcat(c, tmplLine->elements[i].indent);
3614		}
3615		insertElement(&newLine, c, element++, cfi);
3616		free(c);
3617
3618		firstQuotedItem = -1;
3619		quoteLen = 0;
3620		}
3621		}
3622		}
3623		while (tmplLine->numElements)
3624		removeElement(tmplLine, 0);
3625		if (tmplLine->elements)
3626		free(tmplLine->elements);
3627
3628		tmplLine->numElements = newLine.numElements;
3629		tmplLine->elements = newLine.elements;
3630		}
3631
3632		static void insertElement(struct singleLine *line,
3633		const char *item, int insertHere,
3634		struct configFileInfo *cfi)
3635		{
3636		struct keywordTypes *kw;
3637		char indent[2] = "";
3638
3639		/* sanity check */
3640		if (insertHere > line->numElements) {
3641		dbgPrintf
3642		("insertElement() adjusting insertHere from %d to %d\n",
3643		insertHere, line->numElements);
3644		insertHere = line->numElements;
3645		}
3646
3647		line->elements = realloc(line->elements, (line->numElements + 1) *
3648		sizeof(*line->elements));
3649		memmove(&line->elements[insertHere + 1],
3650		&line->elements[insertHere],
3651		(line->numElements - insertHere) * sizeof(*line->elements));
3652		line->elements[insertHere].item = strdup(item);
3653
3654		kw = getKeywordByType(line->type, cfi);
3655
3656		if (line->numElements == 0) {
3657		indent[0] = '\0';
3658		} else if (insertHere == 0) {
3659		indent[0] = kw->nextChar;
3660		} else if (kw->separatorChar != '\0') {
3661		indent[0] = kw->separatorChar;
3662		} else {
3663		indent[0] = ' ';
3664		}
3665
3666		if (insertHere > 0 && line->elements[insertHere - 1].indent[0] == '\0') {
3667		/* move the end-of-line forward */
3668		line->elements[insertHere].indent =
3669		line->elements[insertHere - 1].indent;
3670		line->elements[insertHere - 1].indent = strdup(indent);
3671		} else {
3672		line->elements[insertHere].indent = strdup(indent);
3673		}
3674
3675		line->numElements++;
3676
3677		dbgPrintf("insertElement(%s, '%s%s', %d)\n",
3678		line->elements[0].item,
3679		line->elements[insertHere].item,
3680		line->elements[insertHere].indent, insertHere);
3681		}
3682
3683		static void removeElement(struct singleLine *line, int removeHere)
3684		{
3685		int i;
3686
3687		/* sanity check */
3688		if (removeHere >= line->numElements)
3689		return;
3690
3691		dbgPrintf("removeElement(%s, %d:%s)\n", line->elements[0].item,
3692		removeHere, line->elements[removeHere].item);
3693
3694		free(line->elements[removeHere].item);
3695
3696		if (removeHere > 1) {
3697		/* previous argument gets this argument's post-indentation */
3698		free(line->elements[removeHere - 1].indent);
3699		line->elements[removeHere - 1].indent =
3700		line->elements[removeHere].indent;
3701		} else {
3702		free(line->elements[removeHere].indent);
3703		}
3704
3705		/* now collapse the array, but don't bother to realloc smaller */
3706		for (i = removeHere; i < line->numElements - 1; i++)
3707		line->elements[i] = line->elements[i + 1];
3708
3709		line->numElements--;
3710		}
3711
3712		static int argNameMatch(const char *one, const char *two)
3713		{
3714		char *first, *second;
3715		char *chptra, *chptrb;
3716		int rc;
3717
3718		first = strcpy(alloca(strlen(one) + 1), one);
3719		second = strcpy(alloca(strlen(two) + 1), two);
3720
3721		chptra = strchr(first, '=');
3722		if (chptra)
3723		*chptra = '\0';
3724
3725		chptrb = strchr(second, '=');
3726		if (chptrb)
3727		*chptrb = '\0';
3728
3729		rc = strcmp(first, second);
3730
3731		if (chptra)
3732		*chptra = '=';
3733		if (chptrb)
3734		*chptrb = '=';
3735
3736		return rc;
3737		}
3738
3739		static int argHasValue(const char *arg)
3740		{
3741		char *chptr;
3742
3743		chptr = strchr(arg, '=');
3744		if (chptr)
3745		return 1;
3746		return 0;
3747		}
3748
3749		static int argValueMatch(const char *one, const char *two)
3750		{
3751		char *first, *second;
3752		char *chptra, *chptrb;
3753
3754		first = strcpy(alloca(strlen(one) + 1), one);
3755		second = strcpy(alloca(strlen(two) + 1), two);
3756
3757		chptra = strchr(first, '=');
3758		if (chptra)
3759		chptra += 1;
3760
3761		chptrb = strchr(second, '=');
3762		if (chptrb)
3763		chptrb += 1;
3764
3765		if (!chptra && !chptrb)
3766		return 0;
3767		else if (!chptra && chptrb)
3768		return *chptrb - 0;
3769		else if (!chptrb && chptra)
3770		return 0 - *chptra;
3771		else
3772		return strcmp(chptra, chptrb);
3773		}
3774
3775		int updateActualImage(struct grubConfig *cfg, const char *image,
3776		const char *prefix, const char *addArgs,
3777		const char *removeArgs, int multibootArgs)
3778		{
3779		struct singleEntry *entry;
3780		struct singleLine *line, *rootLine;
3781		int index = 0;
3782		int i, k;
3783		const char **newArgs, **oldArgs;
3784		const char **arg;
3785		int useKernelArgs, useRoot;
3786		int firstElement;
3787		int *usedElements;
3788		int doreplace;
3789
3790		if (!image)
3791		return 0;
3792
3793		if (!addArgs) {
3794		newArgs = malloc(sizeof(*newArgs));
3795		*newArgs = NULL;
3796		} else {
3797		if (poptParseArgvString(addArgs, NULL, &newArgs)) {
3798		fprintf(stderr,
3799		_("grubby: error separating arguments '%s'\n"),
3800		addArgs);
3801		return 1;
3802		}
3803		}
3804
3805		if (!removeArgs) {
3806		oldArgs = malloc(sizeof(*oldArgs));
3807		*oldArgs = NULL;
3808		} else {
3809		if (poptParseArgvString(removeArgs, NULL, &oldArgs)) {
3810		fprintf(stderr,
3811		_("grubby: error separating arguments '%s'\n"),
3812		removeArgs);
3813		free(newArgs);
3814		return 1;
3815		}
3816		}
3817
3818		useKernelArgs = (getKeywordByType(LT_KERNELARGS, cfg->cfi)
3819		&& (!multibootArgs || cfg->cfi->mbConcatArgs));
3820
3821		useRoot = (getKeywordByType(LT_ROOT, cfg->cfi)
3822		&& !multibootArgs);
3823
3824		for (; (entry = findEntryByPath(cfg, image, prefix, &index)); index++) {
3825
3826		if (multibootArgs && !entry->multiboot)
3827		continue;
3828
3829		/* Determine where to put the args.  If this config supports
3830		* LT_KERNELARGS, use that.  Otherwise use
3831		* LT_HYPER/LT_KERNEL/LT_MBMODULE lines.
3832		*/
3833		if (useKernelArgs) {
3834		line = getLineByType(LT_KERNELARGS, entry->lines);
3835		if (!line) {
3836		/* no LT_KERNELARGS, need to add it */
3837		line = addLine(entry, cfg->cfi, LT_KERNELARGS,
3838		cfg->secondaryIndent, NULL);
3839		}
3840		firstElement = 1;
3841
3842		} else if (multibootArgs) {
3843		line = getLineByType(LT_HYPER, entry->lines);
3844		if (!line) {
3845		/* a multiboot entry without LT_HYPER? */
3846		continue;
3847		}
3848		firstElement = 2;
3849
3850		} else {
3851		line =
3852		getLineByType(LT_KERNEL | LT_MBMODULE |
3853		LT_KERNEL_EFI | LT_KERNEL_16,
3854		entry->lines);
3855		if (!line) {
3856		/* no LT_KERNEL or LT_MBMODULE in this entry? */
3857		continue;
3858		}
3859		firstElement = 2;
3860		}
3861
3862		/* handle the elilo case which does:
3863		*   append="hypervisor args -- kernel args"
3864		*/
3865		if (entry->multiboot && cfg->cfi->mbConcatArgs) {
3866		/* this is a multiboot entry, make sure there's
3867		* -- on the args line
3868		*/
3869		for (i = firstElement; i < line->numElements; i++) {
3870		if (!strcmp(line->elements[i].item, "--"))
3871		break;
3872		}
3873		if (i == line->numElements) {
3874		/* assume all existing args are kernel args,
3875		* prepend -- to make it official
3876		*/
3877		insertElement(line, "--", firstElement,
3878		cfg->cfi);
3879		i = firstElement;
3880		}
3881		if (!multibootArgs) {
3882		/* kernel args start after the -- */
3883		firstElement = i + 1;
3884		}
3885		} else if (cfg->cfi->mbConcatArgs) {
3886		/* this is a non-multiboot entry, remove hyper args */
3887		for (i = firstElement; i < line->numElements; i++) {
3888		if (!strcmp(line->elements[i].item, "--"))
3889		break;
3890		}
3891		if (i < line->numElements) {
3892		/* remove args up to -- */
3893		while (strcmp
3894		(line->elements[firstElement].item,
3895		"--"))
3896		removeElement(line, firstElement);
3897		/* remove -- */
3898		removeElement(line, firstElement);
3899		}
3900		}
3901
3902		usedElements = calloc(line->numElements, sizeof(*usedElements));
3903
3904		for (k = 0, arg = newArgs; *arg; arg++, k++) {
3905
3906		doreplace = 1;
3907		for (i = firstElement; i < line->numElements; i++) {
3908		if (multibootArgs && cfg->cfi->mbConcatArgs &&
3909		!strcmp(line->elements[i].item, "--")) {
3910		/* reached the end of hyper args, insert here */
3911		doreplace = 0;
3912		break;
3913		}
3914		if (usedElements[i])
3915		continue;
3916		if (!argNameMatch(line->elements[i].item, *arg)) {
3917		usedElements[i] = 1;
3918		break;
3919		}
3920		}
3921
3922		if (i < line->numElements && doreplace) {
3923		/* direct replacement */
3924		free(line->elements[i].item);
3925		line->elements[i].item = strdup(*arg);
3926
3927		} else if (useRoot && !strncmp(*arg, "root=/dev/", 10)) {
3928		/* root= replacement */
3929		rootLine = getLineByType(LT_ROOT, entry->lines);
3930		if (rootLine) {
3931		free(rootLine->elements[1].item);
3932		rootLine->elements[1].item =
3933		strdup(*arg + 5);
3934		} else {
3935		rootLine =
3936		addLine(entry, cfg->cfi, LT_ROOT,
3937		cfg->secondaryIndent,
3938		*arg + 5);
3939		}
3940		}
3941
3942		else {
3943		/* insert/append */
3944		insertElement(line, *arg, i, cfg->cfi);
3945		usedElements =
3946		realloc(usedElements,
3947		line->numElements *
3948		sizeof(*usedElements));
3949		memmove(&usedElements[i + 1], &usedElements[i],
3950		line->numElements - i - 1);
3951		usedElements[i] = 1;
3952
3953		/* if we updated a root= here even though
3954		* there is a LT_ROOT available we need to
3955		* remove the LT_ROOT entry (this will happen
3956		* if we switch from a device to a label) */
3957		if (useRoot && !strncmp(*arg, "root=", 5)) {
3958		rootLine =
3959		getLineByType(LT_ROOT,
3960		entry->lines);
3961		if (rootLine)
3962		removeLine(entry, rootLine);
3963		}
3964		}
3965		}
3966
3967		free(usedElements);
3968
3969		for (arg = oldArgs; *arg; arg++) {
3970		for (i = firstElement; i < line->numElements; i++) {
3971		if (multibootArgs && cfg->cfi->mbConcatArgs &&
3972		!strcmp(line->elements[i].item, "--"))
3973		/* reached the end of hyper args, stop here */
3974		break;
3975		if (!argNameMatch(line->elements[i].item, *arg)) {
3976		if (!argHasValue(*arg) ||
3977		!argValueMatch(line->elements[i].item, *arg)) {
3978		removeElement(line, i);
3979		break;
3980		}
3981		}
3982		}
3983		/* handle removing LT_ROOT line too */
3984		if (useRoot && !strncmp(*arg, "root=", 5)) {
3985		rootLine = getLineByType(LT_ROOT, entry->lines);
3986		if (rootLine)
3987		removeLine(entry, rootLine);
3988		}
3989		}
3990
3991		if (line->numElements == 1) {
3992		/* don't need the line at all (note it has to be a
3993		LT_KERNELARGS for this to happen */
3994		removeLine(entry, line);
3995		}
3996		}
3997
3998		free(newArgs);
3999		free(oldArgs);
4000
4001		return 0;
4002		}
4003
4004		int updateImage(struct grubConfig *cfg, const char *image,
4005		const char *prefix, const char *addArgs,
4006		const char *removeArgs,
4007		const char *addMBArgs, const char *removeMBArgs)
4008		{
4009		int rc = 0;
4010
4011		if (!image)
4012		return rc;
4013
4014		/* update the main args first... */
4015		if (addArgs || removeArgs)
4016		rc = updateActualImage(cfg, image, prefix, addArgs, removeArgs,
4017		0);
4018		if (rc)
4019		return rc;
4020
4021		/* and now any multiboot args */
4022		if (addMBArgs || removeMBArgs)
4023		rc = updateActualImage(cfg, image, prefix, addMBArgs,
4024		removeMBArgs, 1);
4025		return rc;
4026		}
4027
4028		int addMBInitrd(struct grubConfig *cfg, const char *newMBKernel,
4029		const char *image, const char *prefix, const char *initrd,
4030		const char *title)
4031		{
4032		struct singleEntry *entry;
4033		struct singleLine *line, *kernelLine, *endLine = NULL;
4034		int index = 0;
4035
4036		if (!image)
4037		return 0;
4038
4039		for (; (entry = findEntryByPath(cfg, image, prefix, &index)); index++) {
4040		kernelLine = getLineByType(LT_MBMODULE, entry->lines);
4041		if (!kernelLine)
4042		continue;
4043
4044		/* if title is supplied, the entry's title must match it. */
4045		if (title) {
4046		char *linetitle;
4047
4048		line =
4049		getLineByType(LT_TITLE | LT_MENUENTRY,
4050		entry->lines);
4051		if (!line)
4052		continue;
4053
4054		linetitle = extractTitle(cfg, line);
4055		if (!linetitle)
4056		continue;
4057		if (strcmp(title, linetitle)) {
4058		free(linetitle);
4059		continue;
4060		}
4061		free(linetitle);
4062		}
4063
4064		if (prefix) {
4065		int prefixLen = strlen(prefix);
4066		if (!strncmp(initrd, prefix, prefixLen))
4067		initrd += prefixLen;
4068		}
4069		endLine = getLineByType(LT_ENTRY_END, entry->lines);
4070		if (endLine)
4071		removeLine(entry, endLine);
4072		line =
4073		addLine(entry, cfg->cfi,
4074		preferredLineType(LT_MBMODULE, cfg->cfi),
4075		kernelLine->indent, initrd);
4076		if (!line)
4077		return 1;
4078		if (endLine) {
4079		line = addLine(entry, cfg->cfi, LT_ENTRY_END, "", NULL);
4080		if (!line)
4081		return 1;
4082		}
4083
4084		break;
4085		}
4086
4087		return 0;
4088		}
4089
4090		int updateInitrd(struct grubConfig *cfg, const char *image,
4091		const char *prefix, const char *initrd, const char *title)
4092		{
4093		struct singleEntry *entry;
4094		struct singleLine *line, *kernelLine, *endLine = NULL;
4095		int index = 0;
4096
4097		if (!image)
4098		return 0;
4099
4100		for (; (entry = findEntryByPath(cfg, image, prefix, &index)); index++) {
4101		kernelLine =
4102		getLineByType(LT_KERNEL | LT_KERNEL_EFI | LT_KERNEL_16,
4103		entry->lines);
4104		if (!kernelLine)
4105		continue;
4106
4107		/* if title is supplied, the entry's title must match it. */
4108		if (title) {
4109		char *linetitle;
4110
4111		line =
4112		getLineByType(LT_TITLE | LT_MENUENTRY,
4113		entry->lines);
4114		if (!line)
4115		continue;
4116
4117		linetitle = extractTitle(cfg, line);
4118		if (!linetitle)
4119		continue;
4120		if (strcmp(title, linetitle)) {
4121		free(linetitle);
4122		continue;
4123		}
4124		free(linetitle);
4125		}
4126
4127		line =
4128		getLineByType(LT_INITRD | LT_INITRD_EFI | LT_INITRD_16,
4129		entry->lines);
4130		if (line)
4131		removeLine(entry, line);
4132		if (prefix) {
4133		int prefixLen = strlen(prefix);
4134		if (!strncmp(initrd, prefix, prefixLen))
4135		initrd += prefixLen;
4136		}
4137		endLine = getLineByType(LT_ENTRY_END, entry->lines);
4138		if (endLine)
4139		removeLine(entry, endLine);
4140		enum lineType_e lt;
4141		switch (kernelLine->type) {
4142		case LT_KERNEL:
4143		lt = LT_INITRD;
4144		break;
4145		case LT_KERNEL_EFI:
4146		lt = LT_INITRD_EFI;
4147		break;
4148		case LT_KERNEL_16:
4149		lt = LT_INITRD_16;
4150		break;
4151		default:
4152		lt = preferredLineType(LT_INITRD, cfg->cfi);
4153		}
4154		line = addLine(entry, cfg->cfi, lt, kernelLine->indent, initrd);
4155		if (!line)
4156		return 1;
4157		if (endLine) {
4158		line = addLine(entry, cfg->cfi, LT_ENTRY_END, "", NULL);
4159		if (!line)
4160		return 1;
4161		}
4162
4163		break;
4164		}
4165
4166		return 0;
4167		}
4168
4169		int checkDeviceBootloader(const char *device, const unsigned char *boot)
4170		{
4171		int fd;
4172		unsigned char bootSect[512];
4173		int offset;
4174
4175		fd = open(device, O_RDONLY);
4176		if (fd < 0) {
4177		fprintf(stderr, _("grubby: unable to open %s: %s\n"),
4178		device, strerror(errno));
4179		return 1;
4180		}
4181
4182		if (read(fd, bootSect, 512) != 512) {
4183		fprintf(stderr, _("grubby: unable to read %s: %s\n"),
4184		device, strerror(errno));
4185		return 1;
4186		}
4187		close(fd);
4188
4189		/* first three bytes should match, a jmp short should be in there */
4190		if (memcmp(boot, bootSect, 3))
4191		return 0;
4192
4193		if (boot[1] == JMP_SHORT_OPCODE) {
4194		offset = boot[2] + 2;
4195		} else if (boot[1] == 0xe8 || boot[1] == 0xe9) {
4196		offset = (boot[3] << 8) + boot[2] + 2;
4197		} else if (boot[0] == JMP_SHORT_OPCODE) {
4198		offset = boot[1] + 2;
4199		/*
4200		* it looks like grub, when copying stage1 into the mbr,
4201		* patches stage1 right after the JMP location, replacing
4202		* other instructions such as JMPs for NOOPs. So, relax the
4203		* check a little bit by skipping those different bytes.
4204		*/
4205		if ((bootSect[offset + 1] == NOOP_OPCODE)
4206		&& (bootSect[offset + 2] == NOOP_OPCODE)) {
4207		offset = offset + 3;
4208		}
4209		} else if (boot[0] == 0xe8 || boot[0] == 0xe9) {
4210		offset = (boot[2] << 8) + boot[1] + 2;
4211		} else {
4212		return 0;
4213		}
4214
4215		if (memcmp(boot + offset, bootSect + offset, CODE_SEG_SIZE))
4216		return 0;
4217
4218		return 2;
4219		}
4220
4221		int checkLiloOnRaid(char *mdDev, const unsigned char *boot)
4222		{
4223		int fd;
4224		char buf[65536];
4225		char *end;
4226		char *chptr;
4227		char *chptr2;
4228		int rc;
4229
4230		/* it's on raid; we need to parse /proc/mdstat and check all of the
4231		*raw* devices listed in there */
4232
4233		if (!strncmp(mdDev, "/dev/", 5))
4234		mdDev += 5;
4235
4236		if ((fd = open("/proc/mdstat", O_RDONLY)) < 0) {
4237		fprintf(stderr, _("grubby: failed to open /proc/mdstat: %s\n"),
4238		strerror(errno));
4239		return 2;
4240		}
4241
4242		rc = read(fd, buf, sizeof(buf) - 1);
4243		if (rc < 0 || rc == (sizeof(buf) - 1)) {
4244		fprintf(stderr, _("grubby: failed to read /proc/mdstat: %s\n"),
4245		strerror(errno));
4246		close(fd);
4247		return 2;
4248		}
4249		close(fd);
4250		buf[rc] = '\0';
4251
4252		chptr = buf;
4253		while (*chptr) {
4254		end = strchr(chptr, '\n');
4255		if (!end)
4256		break;
4257		*end = '\0';
4258
4259		if (!strncmp(chptr, mdDev, strlen(mdDev)) &&
4260		chptr[strlen(mdDev)] == ' ') {
4261
4262		/* found the device */
4263		while (*chptr && *chptr != ':')
4264		chptr++;
4265		chptr++;
4266		while (*chptr && isspace(*chptr))
4267		chptr++;
4268
4269		/* skip the "active" bit */
4270		while (*chptr && !isspace(*chptr))
4271		chptr++;
4272		while (*chptr && isspace(*chptr))
4273		chptr++;
4274
4275		/* skip the raid level */
4276		while (*chptr && !isspace(*chptr))
4277		chptr++;
4278		while (*chptr && isspace(*chptr))
4279		chptr++;
4280
4281		/* everything else is partition stuff */
4282		while (*chptr) {
4283		chptr2 = chptr;
4284		while (*chptr2 && *chptr2 != '[')
4285		chptr2++;
4286		if (!*chptr2)
4287		break;
4288
4289		/* yank off the numbers at the end */
4290		chptr2--;
4291		while (isdigit(*chptr2) && chptr2 > chptr)
4292		chptr2--;
4293		chptr2++;
4294		*chptr2 = '\0';
4295
4296		/* Better, now we need the /dev/ back. We're
4297		* done with everything before this point, so
4298		* we can just put the /dev/ part there.
4299		* There will always be room. */
4300		memcpy(chptr - 5, "/dev/", 5);
4301		rc = checkDeviceBootloader(chptr - 5, boot);
4302		if (rc != 2) {
4303		return rc;
4304		}
4305
4306		chptr = chptr2 + 1;
4307		/* skip the [11] bit */
4308		while (*chptr && !isspace(*chptr))
4309		chptr++;
4310		/* and move to the next one */
4311		while (*chptr && isspace(*chptr))
4312		chptr++;
4313		}
4314
4315		/*  we're good to go */
4316		return 2;
4317		}
4318
4319		chptr = end + 1;
4320		}
4321
4322		fprintf(stderr,
4323		_("grubby: raid device /dev/%s not found in /proc/mdstat\n"),
4324		mdDev);
4325		return 0;
4326		}
4327
4328		int checkForLilo(struct grubConfig *config)
4329		{
4330		int fd;
4331		unsigned char boot[512];
4332		struct singleLine *line;
4333
4334		for (line = config->theLines; line; line = line->next)
4335		if (line->type == LT_BOOT)
4336		break;
4337
4338		if (!line) {
4339		fprintf(stderr,
4340		_
4341		("grubby: no boot line found in lilo configuration\n"));
4342		return 1;
4343		}
4344
4345		if (line->numElements != 2)
4346		return 1;
4347
4348		fd = open("/boot/boot.b", O_RDONLY);
4349		if (fd < 0) {
4350		fprintf(stderr, _("grubby: unable to open %s: %s\n"),
4351		"/boot/boot.b", strerror(errno));
4352		return 1;
4353		}
4354
4355		if (read(fd, boot, 512) != 512) {
4356		fprintf(stderr, _("grubby: unable to read %s: %s\n"),
4357		"/boot/boot.b", strerror(errno));
4358		return 1;
4359		}
4360		close(fd);
4361
4362		if (!strncmp("/dev/md", line->elements[1].item, 7))
4363		return checkLiloOnRaid(line->elements[1].item, boot);
4364
4365		return checkDeviceBootloader(line->elements[1].item, boot);
4366		}
4367
4368		int checkForGrub2(struct grubConfig *config)
4369		{
4370		if (!access("/etc/grub.d/", R_OK))
4371		return 2;
4372
4373		return 1;
4374		}
4375
4376		int checkForGrub(struct grubConfig *config)
4377		{
4378		int fd;
4379		unsigned char bootSect[512];
4380		char *boot;
4381		int onSuse = isSuseSystem();
4382
4383		if (onSuse) {
4384		if (parseSuseGrubConf(NULL, &boot))
4385		return 0;
4386		} else {
4387		if (parseSysconfigGrub(NULL, &boot))
4388		return 0;
4389		}
4390
4391		/* assume grub is not installed -- not an error condition */
4392		if (!boot)
4393		return 0;
4394
4395		fd = open("/boot/grub/stage1", O_RDONLY);
4396		if (fd < 0)
4397		/* this doesn't exist if grub hasn't been installed */
4398		return 0;
4399
4400	if (template) {	if (read(fd, bootSect, 512) != 512) {
4401	for (masterLine = template->lines;	fprintf(stderr, _("grubby: unable to read %s: %s\n"),
4402	masterLine && (tmplLine = lineDup(masterLine));	"/boot/grub/stage1", strerror(errno));
4403	lineFree(tmplLine), masterLine = masterLine->next)	close(fd);
4404	{	return 1;
	dbgPrintf("addNewKernel processing %d\n", tmplLine->type);
	/* skip comments */
	chptr = tmplLine->indent;
	while (*chptr && isspace(*chptr)) chptr++;
	if (*chptr == '#') continue;
	if (tmplLine->type == LT_KERNEL &&
	tmplLine->numElements >= 2) {
	if (!template->multiboot && (needs & NEED_MB)) {
	/* it's not a multiboot template and this is the kernel
	* line.  Try to be intelligent about inserting the
	* hypervisor at the same time.
	*/
	if (config->cfi->mbHyperFirst) {
	/* insert the hypervisor first */
	newLine = addLine(new, config->cfi, LT_HYPER,
	tmplLine->indent,
	newMBKernel + strlen(prefix));
	/* set up for adding the kernel line */
	free(tmplLine->indent);
	tmplLine->indent = strdup(config->secondaryIndent);
	needs &= ~NEED_MB;
	}
	if (needs & NEED_KERNEL) {
	/* use addLineTmpl to preserve line elements,
	* otherwise we could just call addLine.  Unfortunately
	* this means making some changes to the template
	* such as the indent change above and the type
	* change below.
	*/
	struct keywordTypes * mbm_kw =
	getKeywordByType(LT_MBMODULE, config->cfi);
	if (mbm_kw) {
	tmplLine->type = LT_MBMODULE;
	free(tmplLine->elements[0].item);
	tmplLine->elements[0].item = strdup(mbm_kw->key);
	}
	newLine = addLineTmpl(new, tmplLine, newLine,
	newKernelPath + strlen(prefix), config->cfi);
	needs &= ~NEED_KERNEL;
	}
	if (needs & NEED_MB) { /* !mbHyperFirst */
	newLine = addLine(new, config->cfi, LT_HYPER,
	config->secondaryIndent,
	newMBKernel + strlen(prefix));
	needs &= ~NEED_MB;
	}
	} else if (needs & NEED_KERNEL) {
	newLine = addLineTmpl(new, tmplLine, newLine,
	newKernelPath + strlen(prefix), config->cfi);
	needs &= ~NEED_KERNEL;
	}
	} else if (tmplLine->type == LT_HYPER &&
	tmplLine->numElements >= 2) {
	if (needs & NEED_MB) {
	newLine = addLineTmpl(new, tmplLine, newLine,
	newMBKernel + strlen(prefix), config->cfi);
	needs &= ~NEED_MB;
	}
	} else if (tmplLine->type == LT_MBMODULE &&
	tmplLine->numElements >= 2) {
	if (new->multiboot) {
	if (needs & NEED_KERNEL) {
	newLine = addLineTmpl(new, tmplLine, newLine,
	newKernelPath +
	strlen(prefix), config->cfi);
	needs &= ~NEED_KERNEL;
	} else if (config->cfi->mbInitRdIsModule &&
	(needs & NEED_INITRD)) {
	char *initrdVal;
	initrdVal = getInitrdVal(config, prefix, tmplLine,
	newKernelInitrd, extraInitrds,
	extraInitrdCount);
	newLine = addLineTmpl(new, tmplLine, newLine,
	initrdVal, config->cfi);
	free(initrdVal);
	needs &= ~NEED_INITRD;
	}
	} else if (needs & NEED_KERNEL) {
	/* template is multi but new is not,
	* insert the kernel in the first module slot
	*/
	tmplLine->type = LT_KERNEL;
	free(tmplLine->elements[0].item);
	tmplLine->elements[0].item =
	strdup(getKeywordByType(LT_KERNEL, config->cfi)->key);
	newLine = addLineTmpl(new, tmplLine, newLine,
	newKernelPath + strlen(prefix), config->cfi);
	needs &= ~NEED_KERNEL;
	} else if (needs & NEED_INITRD) {
	char *initrdVal;
	/* template is multi but new is not,
	* insert the initrd in the second module slot
	*/
	tmplLine->type = LT_INITRD;
	free(tmplLine->elements[0].item);
	tmplLine->elements[0].item =
	strdup(getKeywordByType(LT_INITRD, config->cfi)->key);
	initrdVal = getInitrdVal(config, prefix, tmplLine, newKernelInitrd, extraInitrds, extraInitrdCount);
	newLine = addLineTmpl(new, tmplLine, newLine, initrdVal, config->cfi);
	free(initrdVal);
	needs &= ~NEED_INITRD;
	}
	} else if (tmplLine->type == LT_INITRD &&
	tmplLine->numElements >= 2) {
	if (needs & NEED_INITRD &&
	new->multiboot && !template->multiboot &&
	config->cfi->mbInitRdIsModule) {
	/* make sure we don't insert the module initrd
	* before the module kernel... if we don't do it here,
	* it will be inserted following the template.
	*/
	if (!needs & NEED_KERNEL) {
	char *initrdVal;
	initrdVal = getInitrdVal(config, prefix, tmplLine, newKernelInitrd, extraInitrds, extraInitrdCount);
	newLine = addLine(new, config->cfi, LT_MBMODULE,
	config->secondaryIndent,
	initrdVal);
	free(initrdVal);
	needs &= ~NEED_INITRD;
	}
	} else if (needs & NEED_INITRD) {
	char *initrdVal;
	initrdVal = getInitrdVal(config, prefix, tmplLine, newKernelInitrd, extraInitrds, extraInitrdCount);
	newLine = addLineTmpl(new, tmplLine, newLine, initrdVal, config->cfi);
	free(initrdVal);
	needs &= ~NEED_INITRD;
	}
	} else if (tmplLine->type == LT_MENUENTRY &&
	(needs & NEED_TITLE)) {
	requote(tmplLine, config->cfi);
	char *nkt = malloc(strlen(newKernelTitle)+3);
	strcpy(nkt, "'");
	strcat(nkt, newKernelTitle);
	strcat(nkt, "'");
	newLine = addLineTmpl(new, tmplLine, newLine, nkt, config->cfi);
	free(nkt);
	needs &= ~NEED_TITLE;
	} else if (tmplLine->type == LT_TITLE &&
	(needs & NEED_TITLE)) {
	if (tmplLine->numElements >= 2) {
	newLine = addLineTmpl(new, tmplLine, newLine,
	newKernelTitle, config->cfi);
	needs &= ~NEED_TITLE;
	} else if (tmplLine->numElements == 1 &&
	config->cfi->titleBracketed) {
	/* addLineTmpl doesn't handle titleBracketed */
	newLine = addLine(new, config->cfi, LT_TITLE,
	tmplLine->indent, newKernelTitle);
	needs &= ~NEED_TITLE;
	}
	} else if (tmplLine->type == LT_ECHO) {
	requote(tmplLine, config->cfi);
	static const char *prefix = "'Loading ";
	if (tmplLine->numElements > 1 &&
	strstr(tmplLine->elements[1].item, prefix) &&
	masterLine->next && masterLine->next->type == LT_KERNEL) {
	char *newTitle = malloc(strlen(prefix) +
	strlen(newKernelTitle) + 2);
	strcpy(newTitle, prefix);
	strcat(newTitle, newKernelTitle);
	strcat(newTitle, "'");
	newLine = addLine(new, config->cfi, LT_ECHO,
	tmplLine->indent, newTitle);
	free(newTitle);
	} else {
	/* pass through other lines from the template */
	newLine = addLineTmpl(new, tmplLine, newLine, NULL,
	config->cfi);
	}
	} else {
	/* pass through other lines from the template */
	newLine = addLineTmpl(new, tmplLine, newLine, NULL, config->cfi);
	}
4405	}	}
4406		close(fd);
4407
4408	} else {	/* The more elaborate checks do not work on SuSE. The checks done
4409	/* don't have a template, so start the entry with the	* seem to be reasonble (at least for now), so just return success
	* appropriate starting line
4410	*/	*/
4411	switch (config->cfi->entryStart) {	if (onSuse)
4412	case LT_KERNEL:	return 2;
4413	if (new->multiboot && config->cfi->mbHyperFirst) {
4414	/* fall through to LT_HYPER */	return checkDeviceBootloader(boot, bootSect);
4415	} else {	}
4416	newLine = addLine(new, config->cfi, LT_KERNEL,
4417	config->primaryIndent,	int checkForExtLinux(struct grubConfig *config)
4418	newKernelPath + strlen(prefix));	{
4419	needs &= ~NEED_KERNEL;	int fd;
4420	break;	unsigned char bootSect[512];
4421		char *boot;
4422		char executable[] = "/boot/extlinux/extlinux";
4423
4424		printf("entered: checkForExtLinux()\n");
4425
4426		if (parseSysconfigGrub(NULL, &boot))
4427		return 0;
4428
4429		/* assume grub is not installed -- not an error condition */
4430		if (!boot)
4431		return 0;
4432
4433		fd = open(executable, O_RDONLY);
4434		if (fd < 0)
4435		/* this doesn't exist if grub hasn't been installed */
4436		return 0;
4437
4438		if (read(fd, bootSect, 512) != 512) {
4439		fprintf(stderr, _("grubby: unable to read %s: %s\n"),
4440		executable, strerror(errno));
4441		return 1;
4442		}
4443		close(fd);
4444
4445		return checkDeviceBootloader(boot, bootSect);
4446		}
4447
4448		int checkForYaboot(struct grubConfig *config)
4449		{
4450		/*
4451		* This is a simplistic check that we consider good enough for own puporses
4452		*
4453		* If we were to properly check if yaboot is *installed* we'd need to:
4454		* 1) get the system boot device (LT_BOOT)
4455		* 2) considering it's a raw filesystem, check if the yaboot binary matches
4456		*    the content on the boot device
4457		* 3) if not, copy the binary to a temporary file and run "addnote" on it
4458		* 4) check again if binary and boot device contents match
4459		*/
4460		if (!access("/etc/yaboot.conf", R_OK))
4461		return 2;
4462
4463		return 1;
4464		}
4465
4466		int checkForElilo(struct grubConfig *config)
4467		{
4468		if (!access("/etc/elilo.conf", R_OK))
4469		return 2;
4470
4471		return 1;
4472		}
4473
4474		static size_t getRootSpecifier(const char *str)
4475		{
4476		size_t rs = 0;
4477
4478		if (*str == '(') {
4479		for (; str[rs] != ')' && !isspace(str[rs]); rs++) {
4480		if (!str[rs])
4481		return rs;
4482	}	}
4483		rs++;
4484		}
4485
4486	case LT_HYPER:	return rs + subvolPrefix(str + rs);
4487	newLine = addLine(new, config->cfi, LT_HYPER,	}
	config->primaryIndent,
	newMBKernel + strlen(prefix));
	needs &= ~NEED_MB;
	break;
4488
4489	case LT_MENUENTRY: {	static char *getInitrdVal(struct grubConfig *config,
4490	char *nkt = malloc(strlen(newKernelTitle)+3);	const char *prefix, struct singleLine *tmplLine,
4491	strcpy(nkt, "'");	const char *newKernelInitrd,
4492	strcat(nkt, newKernelTitle);	const char **extraInitrds, int extraInitrdCount)
4493	strcat(nkt, "'");	{
4494	newLine = addLine(new, config->cfi, LT_MENUENTRY,	char *initrdVal, *end;
4495	config->primaryIndent, nkt);	int i;
4496	free(nkt);	size_t totalSize;
4497	needs &= ~NEED_TITLE;	size_t prefixLen;
4498	needs |= NEED_END;	char separatorChar;
4499	break;
4500	}	prefixLen = strlen(prefix);
4501	case LT_TITLE:	totalSize = strlen(newKernelInitrd) - prefixLen + 1 /* \0 */ ;
4502	if( useextlinuxmenu != 0 ){ // We just need useextlinuxmenu to not be zero (set above)
4503	char * templabel;	for (i = 0; i < extraInitrdCount; i++) {
4504	int x = 0, y = 0;	totalSize += sizeof(separatorChar);
4505		totalSize += strlen(extraInitrds[i]) - prefixLen;
4506	templabel = strdup(newKernelTitle);	}
4507	while( templabel[x]){
4508	if( templabel[x] == ' ' ){	initrdVal = end = malloc(totalSize);
4509	y = x;
4510	while( templabel[y] ){	end = stpcpy(end, newKernelInitrd + prefixLen);
4511	templabel[y] = templabel[y+1];
4512	y++;	separatorChar = getKeywordByType(LT_INITRD, config->cfi)->separatorChar;
4513		for (i = 0; i < extraInitrdCount; i++) {
4514		const char *extraInitrd;
4515		int j;
4516
4517		extraInitrd = extraInitrds[i] + prefixLen;
4518		/* Don't add entries that are already there */
4519		if (tmplLine != NULL) {
4520		for (j = 2; j < tmplLine->numElements; j++)
4521		if (strcmp
4522		(extraInitrd,
4523		tmplLine->elements[j].item) == 0)
4524		break;
4525
4526		if (j != tmplLine->numElements)
4527		continue;
4528		}
4529
4530		*end++ = separatorChar;
4531		end = stpcpy(end, extraInitrd);
4532		}
4533
4534		return initrdVal;
4535		}
4536
4537		int addNewKernel(struct grubConfig *config, struct singleEntry *template,
4538		const char *prefix,
4539		const char *newKernelPath, const char *newKernelTitle,
4540		const char *newKernelArgs, const char *newKernelInitrd,
4541		const char **extraInitrds, int extraInitrdCount,
4542		const char *newMBKernel, const char *newMBKernelArgs,
4543		const char *newDevTreePath, int newIndex)
4544		{
4545		struct singleEntry *new, *entry, *prev = NULL;
4546		struct singleLine *newLine = NULL, *tmplLine = NULL, *masterLine = NULL;
4547		int needs;
4548		char *indexs;
4549		char *chptr;
4550		int rc;
4551
4552		if (!newKernelPath)
4553		return 0;
4554
4555		rc = asprintf(&indexs, "%d", newIndex);
4556		if (rc < 0)
4557		return 1;
4558
4559		/* if the newKernelTitle is too long silently munge it into something
4560		* we can live with. truncating is first check, then we'll just mess with
4561		* it until it looks better */
4562		if (config->cfi->maxTitleLength &&
4563		(strlen(newKernelTitle) > config->cfi->maxTitleLength)) {
4564		char *buf = alloca(config->cfi->maxTitleLength + 7);
4565		char *numBuf = alloca(config->cfi->maxTitleLength + 1);
4566		int i = 1;
4567
4568		sprintf(buf, "TITLE=%.*s", config->cfi->maxTitleLength,
4569		newKernelTitle);
4570		while (findEntryByPath(config, buf, NULL, NULL)) {
4571		sprintf(numBuf, "%d", i++);
4572		strcpy(buf + strlen(buf) - strlen(numBuf), numBuf);
4573		}
4574
4575		newKernelTitle = buf + 6;
4576		}
4577
4578		new = malloc(sizeof(*new));
4579		new->skip = 0;
4580		new->multiboot = 0;
4581		new->lines = NULL;
4582		entry = config->entries;
4583		for (unsigned int i = 0; i < newIndex; i++) {
4584		if (!entry)
4585		break;
4586		prev = entry;
4587		entry = entry->next;
4588		}
4589		new->next = entry;
4590
4591		if (prev)
4592		prev->next = new;
4593		else
4594		config->entries = new;
4595
4596		/* copy/update from the template */
4597		needs = NEED_KERNEL | NEED_TITLE;
4598		if (newKernelInitrd)
4599		needs |= NEED_INITRD;
4600		if (newMBKernel) {
4601		needs |= NEED_MB;
4602		new->multiboot = 1;
4603		}
4604		if (newDevTreePath && getKeywordByType(LT_DEVTREE, config->cfi))
4605		needs |= NEED_DEVTREE;
4606
4607		if (template) {
4608		for (masterLine = template->lines;
4609		masterLine && (tmplLine = lineDup(masterLine));
4610		lineFree(tmplLine), masterLine = masterLine->next) {
4611		dbgPrintf("addNewKernel processing %d\n",
4612		tmplLine->type);
4613
4614		/* skip comments */
4615		chptr = tmplLine->indent;
4616		while (*chptr && isspace(*chptr))
4617		chptr++;
4618		if (*chptr == '#')
4619		continue;
4620
4621		if (iskernel(tmplLine->type)
4622		&& tmplLine->numElements >= 2) {
4623		if (!template->multiboot && (needs & NEED_MB)) {
4624		/* it's not a multiboot template and
4625		* this is the kernel line.  Try to
4626		* be intelligent about inserting the
4627		* hypervisor at the same time.
4628		*/
4629		if (config->cfi->mbHyperFirst) {
4630		/* insert the hypervisor first */
4631		newLine =
4632		addLine(new, config->cfi,
4633		LT_HYPER,
4634		tmplLine->indent,
4635		newMBKernel +
4636		strlen(prefix));
4637		/* set up for adding the
4638		* kernel line */
4639		free(tmplLine->indent);
4640		tmplLine->indent =
4641		strdup(config->
4642		secondaryIndent);
4643		needs &= ~NEED_MB;
4644		}
4645		if (needs & NEED_KERNEL) {
4646		/* use addLineTmpl to
4647		* preserve line elements,
4648		* otherwise we could just
4649		* call addLine.
4650		* Unfortunately this means
4651		* making some changes to the
4652		* template such as the
4653		* indent change above and
4654		* the type change below.
4655		*/
4656		struct keywordTypes *mbm_kw =
4657		getKeywordByType
4658		(LT_MBMODULE, config->cfi);
4659		if (mbm_kw) {
4660		tmplLine->type =
4661		LT_MBMODULE;
4662		free(tmplLine->
4663		elements[0].item);
4664		tmplLine->elements[0].
4665		item =
4666		strdup(mbm_kw->key);
4667		}
4668		newLine =
4669		addLineTmpl(new, tmplLine,
4670		newLine,
4671		newKernelPath +
4672		strlen(prefix),
4673		config->cfi);
4674		needs &= ~NEED_KERNEL;
4675	}	}
4676		if (needs & NEED_MB) { /* !mbHyperFirst */
4677		newLine =
4678		addLine(new, config->cfi,
4679		LT_HYPER,
4680		config->
4681		secondaryIndent,
4682		newMBKernel +
4683		strlen(prefix));
4684		needs &= ~NEED_MB;
4685		}
4686		} else if (needs & NEED_KERNEL) {
4687		newLine =
4688		addLineTmpl(new, tmplLine, newLine,
4689		newKernelPath +
4690		strlen(prefix),
4691		config->cfi);
4692		needs &= ~NEED_KERNEL;
4693		}
4694
4695		} else if (tmplLine->type == LT_HYPER &&
4696		tmplLine->numElements >= 2) {
4697		if (needs & NEED_MB) {
4698		newLine =
4699		addLineTmpl(new, tmplLine, newLine,
4700		newMBKernel +
4701		strlen(prefix),
4702		config->cfi);
4703		needs &= ~NEED_MB;
4704		}
4705
4706		} else if (tmplLine->type == LT_MBMODULE &&
4707		tmplLine->numElements >= 2) {
4708		if (new->multiboot) {
4709		if (needs & NEED_KERNEL) {
4710		newLine =
4711		addLineTmpl(new, tmplLine,
4712		newLine,
4713		newKernelPath +
4714		strlen(prefix),
4715		config->cfi);
4716		needs &= ~NEED_KERNEL;
4717		} else if (config->cfi->mbInitRdIsModule
4718		&& (needs & NEED_INITRD)) {
4719		char *initrdVal;
4720		initrdVal =
4721		getInitrdVal(config, prefix,
4722		tmplLine,
4723		newKernelInitrd,
4724		extraInitrds,
4725		extraInitrdCount);
4726		newLine =
4727		addLineTmpl(new, tmplLine,
4728		newLine,
4729		initrdVal,
4730		config->cfi);
4731		free(initrdVal);
4732		needs &= ~NEED_INITRD;
4733		}
4734		} else if (needs & NEED_KERNEL) {
4735		/* template is multi but new is not,
4736		* insert the kernel in the first
4737		* module slot
4738		*/
4739		tmplLine->type =
4740		preferredLineType(LT_KERNEL,
4741		config->cfi);
4742		free(tmplLine->elements[0].item);
4743		tmplLine->elements[0].item =
4744		strdup(getKeywordByType
4745		(tmplLine->type,
4746		config->cfi)->key);
4747		newLine =
4748		addLineTmpl(new, tmplLine, newLine,
4749		newKernelPath +
4750		strlen(prefix),
4751		config->cfi);
4752		needs &= ~NEED_KERNEL;
4753		} else if (needs & NEED_INITRD) {
4754		char *initrdVal;
4755		/* template is multi but new is not,
4756		* insert the initrd in the second
4757		* module slot
4758		*/
4759		tmplLine->type =
4760		preferredLineType(LT_INITRD,
4761		config->cfi);
4762		free(tmplLine->elements[0].item);
4763		tmplLine->elements[0].item =
4764		strdup(getKeywordByType
4765		(tmplLine->type,
4766		config->cfi)->key);
4767		initrdVal =
4768		getInitrdVal(config, prefix,
4769		tmplLine,
4770		newKernelInitrd,
4771		extraInitrds,
4772		extraInitrdCount);
4773		newLine =
4774		addLineTmpl(new, tmplLine, newLine,
4775		initrdVal, config->cfi);
4776		free(initrdVal);
4777		needs &= ~NEED_INITRD;
4778		}
4779
4780		} else if (isinitrd(tmplLine->type)
4781		&& tmplLine->numElements >= 2) {
4782		if (needs & NEED_INITRD && new->multiboot
4783		&& !template->multiboot
4784		&& config->cfi->mbInitRdIsModule) {
4785		/* make sure we don't insert the
4786		* module initrd before the module
4787		* kernel... if we don't do it here,
4788		* it will be inserted following the
4789		* template.
4790		*/
4791		if (!needs & NEED_KERNEL) {
4792		char *initrdVal;
4793
4794		initrdVal =
4795		getInitrdVal(config, prefix,
4796		tmplLine,
4797		newKernelInitrd,
4798		extraInitrds,
4799		extraInitrdCount);
4800		newLine =
4801		addLine(new, config->cfi,
4802		LT_MBMODULE,
4803		config->
4804		secondaryIndent,
4805		initrdVal);
4806		free(initrdVal);
4807		needs &= ~NEED_INITRD;
4808		}
4809		} else if (needs & NEED_INITRD) {
4810		char *initrdVal;
4811		initrdVal =
4812		getInitrdVal(config, prefix,
4813		tmplLine,
4814		newKernelInitrd,
4815		extraInitrds,
4816		extraInitrdCount);
4817		newLine =
4818		addLineTmpl(new, tmplLine, newLine,
4819		initrdVal, config->cfi);
4820		free(initrdVal);
4821		needs &= ~NEED_INITRD;
4822		}
4823
4824		} else if (tmplLine->type == LT_MENUENTRY &&
4825		(needs & NEED_TITLE)) {
4826		requote(tmplLine, config->cfi);
4827		char *nkt = malloc(strlen(newKernelTitle) + 3);
4828		strcpy(nkt, "'");
4829		strcat(nkt, newKernelTitle);
4830		strcat(nkt, "'");
4831		newLine =
4832		addLineTmpl(new, tmplLine, newLine, nkt,
4833		config->cfi);
4834		free(nkt);
4835		needs &= ~NEED_TITLE;
4836		} else if (tmplLine->type == LT_TITLE &&
4837		(needs & NEED_TITLE)) {
4838		if (tmplLine->numElements >= 2) {
4839		newLine =
4840		addLineTmpl(new, tmplLine, newLine,
4841		newKernelTitle,
4842		config->cfi);
4843		needs &= ~NEED_TITLE;
4844		} else if (tmplLine->numElements == 1 &&
4845		config->cfi->titleBracketed) {
4846		/* addLineTmpl doesn't handle
4847		* titleBracketed */
4848		newLine =
4849		addLine(new, config->cfi, LT_TITLE,
4850		tmplLine->indent,
4851		newKernelTitle);
4852		needs &= ~NEED_TITLE;
4853	}	}
4854	x++;	} else if (tmplLine->type == LT_ECHO) {
4855		requote(tmplLine, config->cfi);
4856		static const char *prefix = "'Loading ";
4857		if (tmplLine->numElements > 1 &&
4858		strstr(tmplLine->elements[1].item, prefix)
4859		&& masterLine->next
4860		&& iskernel(masterLine->next->type)) {
4861		char *newTitle =
4862		malloc(strlen(prefix) +
4863		strlen(newKernelTitle) + 2);
4864
4865		strcpy(newTitle, prefix);
4866		strcat(newTitle, newKernelTitle);
4867		strcat(newTitle, "'");
4868		newLine =
4869		addLine(new, config->cfi, LT_ECHO,
4870		tmplLine->indent, newTitle);
4871		free(newTitle);
4872		} else {
4873		/* pass through other lines from the
4874		* template */
4875		newLine =
4876		addLineTmpl(new, tmplLine, newLine,
4877		NULL, config->cfi);
4878		}
4879		} else if (tmplLine->type == LT_DEVTREE &&
4880		tmplLine->numElements == 2
4881		&& newDevTreePath) {
4882		newLine =
4883		addLineTmpl(new, tmplLine, newLine,
4884		newDevTreePath + strlen(prefix),
4885		config->cfi);
4886		needs &= ~NEED_DEVTREE;
4887		} else if (tmplLine->type == LT_ENTRY_END
4888		&& needs & NEED_DEVTREE) {
4889		const char *ndtp = newDevTreePath;
4890		if (!strncmp
4891		(newDevTreePath, prefix, strlen(prefix)))
4892		ndtp += strlen(prefix);
4893		newLine = addLine(new, config->cfi, LT_DEVTREE,
4894		config->secondaryIndent,
4895		ndtp);
4896		needs &= ~NEED_DEVTREE;
4897		newLine =
4898		addLineTmpl(new, tmplLine, newLine, NULL,
4899		config->cfi);
4900		} else {
4901		/* pass through other lines from the template */
4902		newLine =
4903		addLineTmpl(new, tmplLine, newLine, NULL,
4904		config->cfi);
4905	}	}
	newLine = addLine(new, config->cfi, LT_TITLE,
	config->primaryIndent, templabel);
	free(templabel);
	}else{
	newLine = addLine(new, config->cfi, LT_TITLE,
	config->primaryIndent, newKernelTitle);
4906	}	}
	needs &= ~NEED_TITLE;
	break;
4907
4908	default:	} else {
4909	abort();	/* don't have a template, so start the entry with the
4910		* appropriate starting line
4911		*/
4912		switch (config->cfi->entryStart) {
4913		case LT_KERNEL:
4914		case LT_KERNEL_EFI:
4915		case LT_KERNEL_16:
4916		if (new->multiboot && config->cfi->mbHyperFirst) {
4917		/* fall through to LT_HYPER */
4918		} else {
4919		newLine = addLine(new, config->cfi,
4920		preferredLineType(LT_KERNEL,
4921		config->
4922		cfi),
4923		config->primaryIndent,
4924		newKernelPath +
4925		strlen(prefix));
4926		needs &= ~NEED_KERNEL;
4927		break;
4928		}
4929
4930		case LT_HYPER:
4931		newLine = addLine(new, config->cfi, LT_HYPER,
4932		config->primaryIndent,
4933		newMBKernel + strlen(prefix));
4934		needs &= ~NEED_MB;
4935		break;
4936
4937		case LT_MENUENTRY:{
4938		char *nkt = malloc(strlen(newKernelTitle) + 3);
4939		strcpy(nkt, "'");
4940		strcat(nkt, newKernelTitle);
4941		strcat(nkt, "'");
4942		newLine =
4943		addLine(new, config->cfi, LT_MENUENTRY,
4944		config->primaryIndent, nkt);
4945		free(nkt);
4946		needs &= ~NEED_TITLE;
4947		needs |= NEED_END;
4948		break;
4949		}
4950		case LT_TITLE:
4951		if (useextlinuxmenu != 0) { // We just need useextlinuxmenu to not be zero (set above)
4952		char *templabel;
4953		int x = 0, y = 0;
4954
4955		templabel = strdup(newKernelTitle);
4956		while (templabel[x]) {
4957		if (templabel[x] == ' ') {
4958		y = x;
4959		while (templabel[y]) {
4960		templabel[y] =
4961		templabel[y + 1];
4962		y++;
4963		}
4964		}
4965		x++;
4966		}
4967		newLine = addLine(new, config->cfi, LT_TITLE,
4968		config->primaryIndent,
4969		templabel);
4970		free(templabel);
4971		} else {
4972		newLine = addLine(new, config->cfi, LT_TITLE,
4973		config->primaryIndent,
4974		newKernelTitle);
4975		}
4976		needs &= ~NEED_TITLE;
4977		break;
4978
4979		default:
4980		abort();
4981		}
4982	}	}
	}
4983
4984	/* add the remainder of the lines, i.e. those that either	struct singleLine *endLine = NULL;
4985	* weren't present in the template, or in the case of no template,	endLine = getLineByType(LT_ENTRY_END, new->lines);
4986	* all the lines following the entryStart.	if (endLine) {
4987	*/	removeLine(new, endLine);
4988	if (needs & NEED_TITLE) {	needs |= NEED_END;
4989	newLine = addLine(new, config->cfi, LT_TITLE,	}
	config->secondaryIndent,
	newKernelTitle);
	needs &= ~NEED_TITLE;
	}
	if ((needs & NEED_MB) && config->cfi->mbHyperFirst) {
	newLine = addLine(new, config->cfi, LT_HYPER,
	config->secondaryIndent,
	newMBKernel + strlen(prefix));
	needs &= ~NEED_MB;
	}
	if (needs & NEED_KERNEL) {
	newLine = addLine(new, config->cfi,
	(new->multiboot && getKeywordByType(LT_MBMODULE,
	config->cfi)) ?
	LT_MBMODULE : LT_KERNEL,
	config->secondaryIndent,
	newKernelPath + strlen(prefix));
	needs &= ~NEED_KERNEL;
	}
	if (needs & NEED_MB) {
	newLine = addLine(new, config->cfi, LT_HYPER,
	config->secondaryIndent,
	newMBKernel + strlen(prefix));
	needs &= ~NEED_MB;
	}
	if (needs & NEED_INITRD) {
	char *initrdVal;
	initrdVal = getInitrdVal(config, prefix, NULL, newKernelInitrd, extraInitrds, extraInitrdCount);
	newLine = addLine(new, config->cfi,
	(new->multiboot && getKeywordByType(LT_MBMODULE,
	config->cfi)) ?
	LT_MBMODULE : LT_INITRD,
	config->secondaryIndent,
	initrdVal);
	free(initrdVal);
	needs &= ~NEED_INITRD;
	}
	if (needs & NEED_END) {
	newLine = addLine(new, config->cfi, LT_ENTRY_END,
	config->secondaryIndent, NULL);
	needs &= ~NEED_END;
	}
4990
4991	if (needs) {	/* add the remainder of the lines, i.e. those that either
4992	printf(_("grubby: needs=%d, aborting\n"), needs);	* weren't present in the template, or in the case of no template,
4993	abort();	* all the lines following the entryStart.
4994	}	*/
4995		if (needs & NEED_TITLE) {
4996		newLine = addLine(new, config->cfi, LT_TITLE,
4997		config->secondaryIndent, newKernelTitle);
4998		needs &= ~NEED_TITLE;
4999		}
5000		if ((needs & NEED_MB) && config->cfi->mbHyperFirst) {
5001		newLine = addLine(new, config->cfi, LT_HYPER,
5002		config->secondaryIndent,
5003		newMBKernel + strlen(prefix));
5004		needs &= ~NEED_MB;
5005		}
5006		if (needs & NEED_KERNEL) {
5007		newLine = addLine(new, config->cfi,
5008		(new->multiboot
5009		&& getKeywordByType(LT_MBMODULE,
5010		config->cfi))
5011		? LT_MBMODULE : preferredLineType(LT_KERNEL,
5012		config->
5013		cfi),
5014		config->secondaryIndent,
5015		newKernelPath + strlen(prefix));
5016		needs &= ~NEED_KERNEL;
5017		}
5018		if (needs & NEED_MB) {
5019		newLine = addLine(new, config->cfi, LT_HYPER,
5020		config->secondaryIndent,
5021		newMBKernel + strlen(prefix));
5022		needs &= ~NEED_MB;
5023		}
5024		if (needs & NEED_INITRD) {
5025		char *initrdVal;
5026		initrdVal =
5027		getInitrdVal(config, prefix, NULL, newKernelInitrd,
5028		extraInitrds, extraInitrdCount);
5029		newLine =
5030		addLine(new, config->cfi,
5031		(new->multiboot
5032		&& getKeywordByType(LT_MBMODULE, config->cfi))
5033		? LT_MBMODULE : preferredLineType(LT_INITRD,
5034		config->cfi),
5035		config->secondaryIndent, initrdVal);
5036		free(initrdVal);
5037		needs &= ~NEED_INITRD;
5038		}
5039		if (needs & NEED_DEVTREE) {
5040		newLine = addLine(new, config->cfi, LT_DEVTREE,
5041		config->secondaryIndent, newDevTreePath);
5042		needs &= ~NEED_DEVTREE;
5043		}
5044
5045		/* NEEDS_END must be last on bootloaders that need it... */
5046		if (needs & NEED_END) {
5047		newLine = addLine(new, config->cfi, LT_ENTRY_END,
5048		config->secondaryIndent, NULL);
5049		needs &= ~NEED_END;
5050		}
5051
5052	if (updateImage(config, "0", prefix, newKernelArgs, NULL,	if (needs) {
5053	newMBKernelArgs, NULL)) return 1;	printf(_("grubby: needs=%d, aborting\n"), needs);
5054		abort();
5055		}
5056
5057	return 0;	if (updateImage(config, indexs, prefix, newKernelArgs, NULL,
5058		newMBKernelArgs, NULL)) {
5059		config->isModified = 1;
5060		return 1;
5061		}
5062
5063		return 0;
5064	}	}
5065
5066	static void traceback(int signum)	int main(int argc, const char **argv)
5067	{	{
5068	void *array[40];	poptContext optCon;
5069	size_t size;	const char *grubConfig = NULL;
5070		char *outputFile = NULL;
5071	signal(SIGSEGV, SIG_DFL);	int arg = 0;
5072	memset(array, '\0', sizeof (array));	int flags = 0;
5073	size = backtrace(array, 40);	int badImageOkay = 0;
5074		int configureGrub2 = 0;
5075	fprintf(stderr, "grubby recieved SIGSEGV!  Backtrace (%ld):\n",	int configureLilo = 0, configureELilo = 0, configureGrub = 0;
5076	(unsigned long)size);	int configureYaboot = 0, configureSilo = 0, configureZipl = 0;
5077	backtrace_symbols_fd(array, size, STDERR_FILENO);	int configureExtLinux = 0;
5078	exit(1);	int bootloaderProbe = 0;
5079	}	int extraInitrdCount = 0;
5080		char *updateKernelPath = NULL;
5081	int main(int argc, const char ** argv) {	char *newKernelPath = NULL;
5082	poptContext optCon;	char *removeKernelPath = NULL;
5083	const char * grubConfig = NULL;	char *newKernelArgs = NULL;
5084	char * outputFile = NULL;	char *newKernelInitrd = NULL;
5085	int arg = 0;	char *newKernelTitle = NULL;
5086	int flags = 0;	char *newDevTreePath = NULL;
5087	int badImageOkay = 0;	char *newMBKernel = NULL;
5088	int configureGrub2 = 0;	char *newMBKernelArgs = NULL;
5089	int configureLilo = 0, configureELilo = 0, configureGrub = 0;	int newIndex = 0;
5090	int configureYaboot = 0, configureSilo = 0, configureZipl = 0;	char *removeMBKernelArgs = NULL;
5091	int configureExtLinux = 0;	char *removeMBKernel = NULL;
5092	int bootloaderProbe = 0;	char *bootPrefix = NULL;
5093	int extraInitrdCount = 0;	char *defaultKernel = NULL;
5094	char * updateKernelPath = NULL;	char *removeArgs = NULL;
5095	char * newKernelPath = NULL;	char *kernelInfo = NULL;
5096	char * removeKernelPath = NULL;	char *extraInitrds[MAX_EXTRA_INITRDS] = { NULL };
5097	char * newKernelArgs = NULL;	char *envPath = NULL;
5098	char * newKernelInitrd = NULL;	const char *chptr = NULL;
5099	char * newKernelTitle = NULL;	struct configFileInfo *cfi = NULL;
5100	char * newKernelVersion = NULL;	struct grubConfig *config;
5101	char * newMBKernel = NULL;	struct singleEntry *template = NULL;
5102	char * newMBKernelArgs = NULL;	int copyDefault = 0, makeDefault = 0;
5103	char * removeMBKernelArgs = NULL;	int displayDefault = 0;
5104	char * removeMBKernel = NULL;	int displayDefaultIndex = 0;
5105	char * bootPrefix = NULL;	int displayDefaultTitle = 0;
5106	char * defaultKernel = NULL;	int defaultIndex = -1;
5107	char * removeArgs = NULL;	struct poptOption options[] = {
5108	char * kernelInfo = NULL;	{"add-kernel", 0, POPT_ARG_STRING, &newKernelPath, 0,
5109	char * extraInitrds[MAX_EXTRA_INITRDS] = { NULL };	_("add an entry for the specified kernel"), _("kernel-path")},
5110	const char * chptr = NULL;	{"add-multiboot", 0, POPT_ARG_STRING, &newMBKernel, 0,
5111	struct configFileInfo * cfi = NULL;	_("add an entry for the specified multiboot kernel"), NULL},
5112	struct grubConfig * config;	{"args", 0, POPT_ARG_STRING, &newKernelArgs, 0,
5113	struct singleEntry * template = NULL;	_("default arguments for the new kernel or new arguments for "
5114	int copyDefault = 0, makeDefault = 0;	"kernel being updated"), _("args")},
5115	int displayDefault = 0;	{"mbargs", 0, POPT_ARG_STRING, &newMBKernelArgs, 0,
5116	int displayDefaultIndex = 0;	_("default arguments for the new multiboot kernel or "
5117	int displayDefaultTitle = 0;	"new arguments for multiboot kernel being updated"), NULL},
5118	struct poptOption options[] = {	{"mounts", 0, POPT_ARG_STRING, &mounts, 0,
5119	{ "add-kernel", 0, POPT_ARG_STRING, &newKernelPath, 0,	_("path to fake /proc/mounts file (for testing only)"),
5120	_("add an entry for the specified kernel"), _("kernel-path") },	_("mounts")},
5121	{ "add-multiboot", 0, POPT_ARG_STRING, &newMBKernel, 0,	{"bad-image-okay", 0, 0, &badImageOkay, 0,
5122	_("add an entry for the specified multiboot kernel"), NULL },	_
5123	{ "args", 0, POPT_ARG_STRING, &newKernelArgs, 0,	("don't sanity check images in boot entries (for testing only)"),
5124	_("default arguments for the new kernel or new arguments for "	NULL},
5125	"kernel being updated"), _("args") },	{"boot-filesystem", 0, POPT_ARG_STRING, &bootPrefix, 0,
5126	{ "mbargs", 0, POPT_ARG_STRING, &newMBKernelArgs, 0,	_
5127	_("default arguments for the new multiboot kernel or "	("filesystem which contains /boot directory (for testing only)"),
5128	"new arguments for multiboot kernel being updated"), NULL },	_("bootfs")},
	{ "bad-image-okay", 0, 0, &badImageOkay, 0,
	_("don't sanity check images in boot entries (for testing only)"),
	NULL },
	{ "boot-filesystem", 0, POPT_ARG_STRING, &bootPrefix, 0,
	_("filestystem which contains /boot directory (for testing only)"),
	_("bootfs") },
5129	#if defined(__i386__) || defined(__x86_64__) || defined (__powerpc64__) || defined (__ia64__)	#if defined(__i386__) || defined(__x86_64__) || defined (__powerpc64__) || defined (__ia64__)
5130	{ "bootloader-probe", 0, POPT_ARG_NONE, &bootloaderProbe, 0,	{"bootloader-probe", 0, POPT_ARG_NONE, &bootloaderProbe, 0,
5131	_("check which bootloader is installed on boot sector") },	_("check which bootloader is installed on boot sector")},
5132	#endif	#endif
5133	{ "config-file", 'c', POPT_ARG_STRING, &grubConfig, 0,	{"config-file", 'c', POPT_ARG_STRING, &grubConfig, 0,
5134	_("path to grub config file to update (\"-\" for stdin)"),	_("path to grub config file to update (\"-\" for stdin)"),
5135	_("path") },	_("path")},
5136	{ "copy-default", 0, 0, &copyDefault, 0,	{"copy-default", 0, 0, &copyDefault, 0,
5137	_("use the default boot entry as a template for the new entry "	_("use the default boot entry as a template for the new entry "
5138	"being added; if the default is not a linux image, or if "	"being added; if the default is not a linux image, or if "
5139	"the kernel referenced by the default image does not exist, "	"the kernel referenced by the default image does not exist, "
5140	"the first linux entry whose kernel does exist is used as the "	"the first linux entry whose kernel does exist is used as the "
5141	"template"), NULL },	"template"), NULL},
5142	{ "debug", 0, 0, &debug, 0,	{"debug", 0, 0, &debug, 0,
5143	_("print debugging information for failures") },	_("print debugging information for failures")},
5144	{ "default-kernel", 0, 0, &displayDefault, 0,	{"default-kernel", 0, 0, &displayDefault, 0,
5145	_("display the path of the default kernel") },	_("display the path of the default kernel")},
5146	{ "default-index", 0, 0, &displayDefaultIndex, 0,	{"default-index", 0, 0, &displayDefaultIndex, 0,
5147	_("display the index of the default kernel") },	_("display the index of the default kernel")},
5148	{ "default-title", 0, 0, &displayDefaultTitle, 0,	{"default-title", 0, 0, &displayDefaultTitle, 0,
5149	_("display the title of the default kernel") },	_("display the title of the default kernel")},
5150	{ "elilo", 0, POPT_ARG_NONE, &configureELilo, 0,	{"devtree", 0, POPT_ARG_STRING, &newDevTreePath, 0,
5151	_("configure elilo bootloader") },	_("device tree file for new stanza"), _("dtb-path")},
5152	{ "extlinux", 0, POPT_ARG_NONE, &configureExtLinux, 0,	{"devtreedir", 0, POPT_ARG_STRING, &newDevTreePath, 0,
5153	_("configure extlinux bootloader (from syslinux)") },	_("device tree directory for new stanza"), _("dtb-path")},
5154	{ "grub", 0, POPT_ARG_NONE, &configureGrub, 0,	{"elilo", 0, POPT_ARG_NONE, &configureELilo, 0,
5155	_("configure grub bootloader") },	_("configure elilo bootloader")},
5156	{ "grub2", 0, POPT_ARG_NONE, &configureGrub2, 0,	{"efi", 0, POPT_ARG_NONE, &isEfi, 0,
5157	_("configure grub2 bootloader") },	_("force grub2 stanzas to use efi")},
5158	{ "info", 0, POPT_ARG_STRING, &kernelInfo, 0,	{"env", 0, POPT_ARG_STRING, &envPath, 0,
5159	_("display boot information for specified kernel"),	_("path for environment data"),
5160	_("kernel-path") },	_("path")},
5161	{ "initrd", 0, POPT_ARG_STRING, &newKernelInitrd, 0,	{"extlinux", 0, POPT_ARG_NONE, &configureExtLinux, 0,
5162	_("initrd image for the new kernel"), _("initrd-path") },	_("configure extlinux bootloader (from syslinux)")},
5163	{ "extra-initrd", 'i', POPT_ARG_STRING, NULL, 'i',	{"grub", 0, POPT_ARG_NONE, &configureGrub, 0,
5164	_("auxilliary initrd image for things other than the new kernel"), _("initrd-path") },	_("configure grub bootloader")},
5165	{ "lilo", 0, POPT_ARG_NONE, &configureLilo, 0,	{"grub2", 0, POPT_ARG_NONE, &configureGrub2, 0,
5166	_("configure lilo bootloader") },	_("configure grub2 bootloader")},
5167	{ "make-default", 0, 0, &makeDefault, 0,	{"info", 0, POPT_ARG_STRING, &kernelInfo, 0,
5168	_("make the newly added entry the default boot entry"), NULL },	_("display boot information for specified kernel"),
5169	{ "output-file", 'o', POPT_ARG_STRING, &outputFile, 0,	_("kernel-path")},
5170	_("path to output updated config file (\"-\" for stdout)"),	{"initrd", 0, POPT_ARG_STRING, &newKernelInitrd, 0,
5171	_("path") },	_("initrd image for the new kernel"), _("initrd-path")},
5172	{ "remove-args", 0, POPT_ARG_STRING, &removeArgs, 0,	{"extra-initrd", 'i', POPT_ARG_STRING, NULL, 'i',
5173	_("remove kernel arguments"), NULL },	_
5174	{ "remove-mbargs", 0, POPT_ARG_STRING, &removeMBKernelArgs, 0,	("auxiliary initrd image for things other than the new kernel"),
5175	_("remove multiboot kernel arguments"), NULL },	_("initrd-path")},
5176	{ "remove-kernel", 0, POPT_ARG_STRING, &removeKernelPath, 0,	{"lilo", 0, POPT_ARG_NONE, &configureLilo, 0,
5177	_("remove all entries for the specified kernel"),	_("configure lilo bootloader")},
5178	_("kernel-path") },	{"make-default", 0, 0, &makeDefault, 0,
5179	{ "remove-multiboot", 0, POPT_ARG_STRING, &removeMBKernel, 0,	_("make the newly added entry the default boot entry"), NULL},
5180	_("remove all entries for the specified multiboot kernel"), NULL },	{"output-file", 'o', POPT_ARG_STRING, &outputFile, 0,
5181	{ "set-default", 0, POPT_ARG_STRING, &defaultKernel, 0,	_("path to output updated config file (\"-\" for stdout)"),
5182	_("make the first entry referencing the specified kernel "	_("path")},
5183	"the default"), _("kernel-path") },	{"remove-args", 0, POPT_ARG_STRING, &removeArgs, 0,
5184	{ "silo", 0, POPT_ARG_NONE, &configureSilo, 0,	_("remove kernel arguments"), NULL},
5185	_("configure silo bootloader") },	{"remove-mbargs", 0, POPT_ARG_STRING, &removeMBKernelArgs, 0,
5186	{ "title", 0, POPT_ARG_STRING, &newKernelTitle, 0,	_("remove multiboot kernel arguments"), NULL},
5187	_("title to use for the new kernel entry"), _("entry-title") },	{"remove-kernel", 0, POPT_ARG_STRING, &removeKernelPath, 0,
5188	{ "update-kernel", 0, POPT_ARG_STRING, &updateKernelPath, 0,	_("remove all entries for the specified kernel"),
5189	_("updated information for the specified kernel"),	_("kernel-path")},
5190	_("kernel-path") },	{"remove-multiboot", 0, POPT_ARG_STRING, &removeMBKernel, 0,
5191	{ "version", 'v', 0, NULL, 'v',	_("remove all entries for the specified multiboot kernel"),
5192	_("print the version of this program and exit"), NULL },	NULL},
5193	{ "yaboot", 0, POPT_ARG_NONE, &configureYaboot, 0,	{"set-default", 0, POPT_ARG_STRING, &defaultKernel, 0,
5194	_("configure yaboot bootloader") },	_("make the first entry referencing the specified kernel "
5195	{ "zipl", 0, POPT_ARG_NONE, &configureZipl, 0,	"the default"), _("kernel-path")},
5196	_("configure zipl bootloader") },	{"set-default-index", 0, POPT_ARG_INT, &defaultIndex, 0,
5197	POPT_AUTOHELP	_("make the given entry index the default entry"),
5198	{ 0, 0, 0, 0, 0 }	_("entry-index")},
5199	};	{"set-index", 0, POPT_ARG_INT, &newIndex, 0,
5200		_("use the given index when creating a new entry"),
5201	useextlinuxmenu=0;	_("entry-index")},
5202		{"silo", 0, POPT_ARG_NONE, &configureSilo, 0,
5203	signal(SIGSEGV, traceback);	_("configure silo bootloader")},
5204		{"title", 0, POPT_ARG_STRING, &newKernelTitle, 0,
5205	optCon = poptGetContext("grubby", argc, argv, options, 0);	_("title to use for the new kernel entry"), _("entry-title")},
5206	poptReadDefaultConfig(optCon, 1);	{"update-kernel", 0, POPT_ARG_STRING, &updateKernelPath, 0,
5207		_("updated information for the specified kernel"),
5208	while ((arg = poptGetNextOpt(optCon)) >= 0) {	_("kernel-path")},
5209	switch (arg) {	{"version", 'v', 0, NULL, 'v',
5210	case 'v':	_("print the version of this program and exit"), NULL},
5211	printf("grubby version %s\n", VERSION);	{"yaboot", 0, POPT_ARG_NONE, &configureYaboot, 0,
5212	exit(0);	_("configure yaboot bootloader")},
5213	break;	{"zipl", 0, POPT_ARG_NONE, &configureZipl, 0,
5214	case 'i':	_("configure zipl bootloader")},
5215	if (extraInitrdCount < MAX_EXTRA_INITRDS) {	POPT_AUTOHELP {0, 0, 0, 0, 0}
5216	extraInitrds[extraInitrdCount++] = strdup(poptGetOptArg(optCon));	};
5217	} else {
5218	fprintf(stderr, _("grubby: extra initrd maximum is %d\n"), extraInitrdCount);	useextlinuxmenu = 0;
5219	return 1;
5220	}	int i = 0;
5221	break;	for (int j = 1; j < argc; j++)
5222		i += strlen(argv[j]) + 1;
5223		saved_command_line = malloc(i);
5224		if (!saved_command_line) {
5225		fprintf(stderr, "grubby: %m\n");
5226		exit(1);
5227		}
5228		saved_command_line[0] = '\0';
5229		int cmdline_len = 0, arg_len;
5230		for (int j = 1; j < argc; j++) {
5231		arg_len = strlen(argv[j]);
5232		memcpy(saved_command_line + cmdline_len, argv[j], arg_len);
5233		cmdline_len += arg_len;
5234		if (j != argc - 1) {
5235		memcpy(saved_command_line + cmdline_len, " ", 1);
5236		cmdline_len++;
5237		}
5238
5239	}	}
5240	}	saved_command_line[cmdline_len] = '\0';
5241
5242	if (arg < -1) {	optCon = poptGetContext("grubby", argc, argv, options, 0);
5243	fprintf(stderr, _("grubby: bad argument %s: %s\n"),	poptReadDefaultConfig(optCon, 1);
	poptBadOption(optCon, POPT_BADOPTION_NOALIAS),
	poptStrerror(arg));
	return 1;
	}
5244
5245	if ((chptr = poptGetArg(optCon))) {	while ((arg = poptGetNextOpt(optCon)) >= 0) {
5246	fprintf(stderr, _("grubby: unexpected argument %s\n"), chptr);	switch (arg) {
5247	return 1;	case 'v':
5248	}	printf("grubby version %s\n", VERSION);
5249		exit(0);
5250		break;
5251		case 'i':
5252		if (extraInitrdCount < MAX_EXTRA_INITRDS) {
5253		extraInitrds[extraInitrdCount++] =
5254		strdup(poptGetOptArg(optCon));
5255		} else {
5256		fprintf(stderr,
5257		_
5258		("grubby: extra initrd maximum is %d\n"),
5259		extraInitrdCount);
5260		return 1;
5261		}
5262		break;
5263		}
5264		}
5265
5266	if ((configureLilo + configureGrub2 + configureGrub + configureELilo +	if (arg < -1) {
5267	configureYaboot + configureSilo + configureZipl +	fprintf(stderr, _("grubby: bad argument %s: %s\n"),
5268	configureExtLinux ) > 1) {	poptBadOption(optCon, POPT_BADOPTION_NOALIAS),
5269	fprintf(stderr, _("grubby: cannot specify multiple bootloaders\n"));	poptStrerror(arg));
5270	return 1;	return 1;
5271	} else if (bootloaderProbe && grubConfig) {	}
	fprintf(stderr,
	_("grubby: cannot specify config file with --bootloader-probe\n"));
	return 1;
	} else if (configureGrub2) {
	cfi = &grub2ConfigType;
	} else if (configureLilo) {
	cfi = &liloConfigType;
	} else if (configureGrub) {
	cfi = &grubConfigType;
	} else if (configureELilo) {
	cfi = &eliloConfigType;
	} else if (configureYaboot) {
	cfi = &yabootConfigType;
	} else if (configureSilo) {
	cfi = &siloConfigType;
	} else if (configureZipl) {
	cfi = &ziplConfigType;
	} else if (configureExtLinux) {
	cfi = &extlinuxConfigType;
	useextlinuxmenu=1;
	}
5272
5273	if (!cfi) {	if ((chptr = poptGetArg(optCon))) {
5274	if (grub2FindConfig(&grub2ConfigType))	fprintf(stderr, _("grubby: unexpected argument %s\n"), chptr);
5275	cfi = &grub2ConfigType;	return 1;
5276	else	}
	#ifdef __ia64__
	cfi = &eliloConfigType;
	#elif __powerpc__
	cfi = &yabootConfigType;
	#elif __sparc__
	cfi = &siloConfigType;
	#elif __s390__
	cfi = &ziplConfigType;
	#elif __s390x__
	cfi = &ziplConfigtype;
	#else
	cfi = &grubConfigType;
	#endif
	}
5277
5278	if (!grubConfig) {	if ((configureLilo + configureGrub2 + configureGrub + configureELilo +
5279	if (cfi->findConfig)	configureYaboot + configureSilo + configureZipl +
5280	grubConfig = cfi->findConfig(cfi);	configureExtLinux) > 1) {
5281	if (!grubConfig)	fprintf(stderr,
5282	grubConfig = cfi->defaultConfig;	_("grubby: cannot specify multiple bootloaders\n"));
5283	}	return 1;
5284		} else if (bootloaderProbe && grubConfig) {
5285		fprintf(stderr,
5286		_
5287		("grubby: cannot specify config file with --bootloader-probe\n"));
5288		return 1;
5289		} else if (configureGrub2) {
5290		cfi = &grub2ConfigType;
5291		if (envPath)
5292		cfi->envFile = envPath;
5293		} else if (configureLilo) {
5294		cfi = &liloConfigType;
5295		} else if (configureGrub) {
5296		cfi = &grubConfigType;
5297		} else if (configureELilo) {
5298		cfi = &eliloConfigType;
5299		} else if (configureYaboot) {
5300		cfi = &yabootConfigType;
5301		} else if (configureSilo) {
5302		cfi = &siloConfigType;
5303		} else if (configureZipl) {
5304		cfi = &ziplConfigType;
5305		} else if (configureExtLinux) {
5306		cfi = &extlinuxConfigType;
5307		useextlinuxmenu = 1;
5308		}
5309
5310		if (!cfi) {
5311		if (grub2FindConfig(&grub2ConfigType)) {
5312		cfi = &grub2ConfigType;
5313		configureGrub2 = 1;
5314		if (envPath)
5315		cfi->envFile = envPath;
5316		} else {
5317		#ifdef __ia64__
5318		cfi = &eliloConfigType;
5319		configureLilo = 1;
5320		#elif defined(__powerpc__)
5321		cfi = &yabootConfigType;
5322		configureYaboot = 1;
5323		#elif defined(__sparc__)
5324		cfi = &siloConfigType;
5325		configureSilo = 1;
5326		#elif defined(__s390__) || defined(__s390x__)
5327		cfi = &ziplConfigType;
5328		configureZipl = 1;
5329		#else
5330		cfi = &grubConfigType;
5331		configureGrub = 1;
5332		#endif
5333		}
5334		}
5335
5336	if (bootloaderProbe && (displayDefault || kernelInfo || newKernelVersion ||	if (!grubConfig) {
5337	newKernelPath || removeKernelPath || makeDefault ||	if (cfi->findConfig)
5338	defaultKernel || displayDefaultIndex || displayDefaultTitle)) {	grubConfig = cfi->findConfig(cfi);
5339	fprintf(stderr, _("grubby: --bootloader-probe may not be used with "	if (!grubConfig)
5340		grubConfig = cfi->defaultConfig;
5341		}
5342
5343		if (bootloaderProbe && (displayDefault || kernelInfo ||
5344		newKernelPath || removeKernelPath || makeDefault
5345		|| defaultKernel || displayDefaultIndex
5346		|| displayDefaultTitle
5347		|| (defaultIndex >= 0))) {
5348		fprintf(stderr,
5349		_("grubby: --bootloader-probe may not be used with "
5350	"specified option"));	"specified option"));
5351	return 1;	return 1;
5352	}	}
5353
5354	if ((displayDefault || kernelInfo) && (newKernelVersion || newKernelPath ||	if ((displayDefault || kernelInfo) && (newKernelPath ||
5355	removeKernelPath)) {	removeKernelPath)) {
5356	fprintf(stderr, _("grubby: --default-kernel and --info may not "	fprintf(stderr, _("grubby: --default-kernel and --info may not "
5357	"be used when adding or removing kernels\n"));	"be used when adding or removing kernels\n"));
5358	return 1;	return 1;
5359	}	}
5360
5361	if (newKernelPath && !newKernelTitle) {	if (newKernelPath && !newKernelTitle) {
5362	fprintf(stderr, _("grubby: kernel title must be specified\n"));	fprintf(stderr, _("grubby: kernel title must be specified\n"));
5363	return 1;	return 1;
5364	} else if (!newKernelPath && (newKernelTitle  || copyDefault ||	} else if (!newKernelPath && (copyDefault ||
5365	(newKernelInitrd && !updateKernelPath)||	(newKernelInitrd && !updateKernelPath) ||
5366	makeDefault || extraInitrdCount > 0)) {	makeDefault || extraInitrdCount > 0)) {
5367	fprintf(stderr, _("grubby: kernel path expected\n"));	fprintf(stderr, _("grubby: kernel path expected\n"));
5368	return 1;	return 1;
5369	}	}
5370
5371	if (newKernelPath && updateKernelPath) {	if (newKernelPath && updateKernelPath) {
5372	fprintf(stderr, _("grubby: --add-kernel and --update-kernel may"	fprintf(stderr, _("grubby: --add-kernel and --update-kernel may"
5373	"not be used together"));	"not be used together"));
5374	return 1;	return 1;
5375	}	}
5376
5377	if (makeDefault && defaultKernel) {	if (makeDefault && defaultKernel) {
5378	fprintf(stderr, _("grubby: --make-default and --default-kernel "	fprintf(stderr, _("grubby: --make-default and --default-kernel "
5379		"may not be used together\n"));
5380		return 1;
5381		} else if (defaultKernel && removeKernelPath &&
5382		!strcmp(defaultKernel, removeKernelPath)) {
5383		fprintf(stderr,
5384		_("grubby: cannot make removed kernel the default\n"));
5385		return 1;
5386		} else if (defaultKernel && newKernelPath &&
5387		!strcmp(defaultKernel, newKernelPath)) {
5388		makeDefault = 1;
5389		defaultKernel = NULL;
5390		} else if (defaultKernel && (defaultIndex >= 0)) {
5391		fprintf(stderr,
5392		_("grubby: --set-default and --set-default-index "
5393	"may not be used together\n"));	"may not be used together\n"));
5394	return 1;	return 1;
5395	} else if (defaultKernel && removeKernelPath &&	}
	!strcmp(defaultKernel, removeKernelPath)) {
	fprintf(stderr, _("grubby: cannot make removed kernel the default\n"));
	return 1;
	} else if (defaultKernel && newKernelPath &&
	!strcmp(defaultKernel, newKernelPath)) {
	makeDefault = 1;
	defaultKernel = NULL;
	}
5396
5397	if (grubConfig && !strcmp(grubConfig, "-") && !outputFile) {	if (grubConfig && !strcmp(grubConfig, "-") && !outputFile) {
5398	fprintf(stderr, _("grubby: output file must be specified if stdin "	fprintf(stderr,
5399	"is used\n"));	_("grubby: output file must be specified if stdin "
5400	return 1;	"is used\n"));
5401	}	return 1;
5402		}
5403
5404	if (!removeKernelPath && !newKernelPath && !displayDefault && !defaultKernel	if (!removeKernelPath && !newKernelPath && !displayDefault
5405	&& !kernelInfo && !bootloaderProbe && !updateKernelPath	&& !defaultKernel && !kernelInfo && !bootloaderProbe
5406	&& !removeMBKernel && !displayDefaultIndex && !displayDefaultTitle) {	&& !updateKernelPath && !removeMBKernel && !displayDefaultIndex
5407	fprintf(stderr, _("grubby: no action specified\n"));	&& !displayDefaultTitle && (defaultIndex == -1)) {
5408	return 1;	fprintf(stderr, _("grubby: no action specified\n"));
5409	}	return 1;
5410		}
5411
5412	flags |= badImageOkay ? GRUBBY_BADIMAGE_OKAY : 0;	flags |= badImageOkay ? GRUBBY_BADIMAGE_OKAY : 0;
5413
5414	if (cfi->needsBootPrefix) {	if (cfi->needsBootPrefix) {
5415	if (!bootPrefix) {	if (!bootPrefix) {
5416	bootPrefix = findBootPrefix();	bootPrefix = findBootPrefix();
5417	if (!bootPrefix) return 1;	if (!bootPrefix)
5418		return 1;
5419		} else {
5420		/* this shouldn't end with a / */
5421		if (bootPrefix[strlen(bootPrefix) - 1] == '/')
5422		bootPrefix[strlen(bootPrefix) - 1] = '\0';
5423		}
5424	} else {	} else {
5425	/* this shouldn't end with a / */	bootPrefix = "";
	if (bootPrefix[strlen(bootPrefix) - 1] == '/')
	bootPrefix[strlen(bootPrefix) - 1] = '\0';
5426	}	}
	} else {
	bootPrefix = "";
	}
5427
5428	if (!cfi->mbAllowExtraInitRds &&	if (!cfi->mbAllowExtraInitRds && extraInitrdCount > 0) {
5429	extraInitrdCount > 0) {	fprintf(stderr,
5430	fprintf(stderr, _("grubby: %s doesn't allow multiple initrds\n"), cfi->defaultConfig);	_("grubby: %s doesn't allow multiple initrds\n"),
5431	return 1;	cfi->defaultConfig);
5432	}	return 1;
5433		}
5434
5435	if (bootloaderProbe) {	if (bootloaderProbe) {
5436	int lrc = 0, grc = 0, gr2c = 0, extrc = 0, yrc = 0, erc = 0;	int lrc = 0, grc = 0, gr2c = 0, extrc = 0, yrc = 0, erc = 0;
5437	struct grubConfig * lconfig, * gconfig, * yconfig, * econfig;	struct grubConfig *lconfig, *gconfig, *yconfig, *econfig;
5438
5439	const char *grub2config = grub2FindConfig(&grub2ConfigType);	const char *grub2config = grub2FindConfig(&grub2ConfigType);
5440	if (grub2config) {	if (grub2config) {
5441	gconfig = readConfig(grub2config, &grub2ConfigType);	gconfig = readConfig(grub2config, &grub2ConfigType);
5442	if (!gconfig)	if (!gconfig)
5443	gr2c = 1;	gr2c = 1;
5444	else	else
5445	gr2c = checkForGrub2(gconfig);	gr2c = checkForGrub2(gconfig);
5446	}	}
	const char *grubconfig = grubFindConfig(&grubConfigType);
	if (!access(grubconfig, F_OK)) {
	gconfig = readConfig(grubconfig, &grubConfigType);
	if (!gconfig)
	grc = 1;
	else
	grc = checkForGrub(gconfig);
	}
	if (!access(liloConfigType.defaultConfig, F_OK)) {
	lconfig = readConfig(liloConfigType.defaultConfig, &liloConfigType);
	if (!lconfig)
	lrc = 1;
	else
	lrc = checkForLilo(lconfig);
	}
	if (!access(eliloConfigType.defaultConfig, F_OK)) {
	econfig = readConfig(eliloConfigType.defaultConfig,
	&eliloConfigType);
	if (!econfig)
	erc = 1;
	else
	erc = checkForElilo(econfig);
	}
	if (!access(extlinuxConfigType.defaultConfig, F_OK)) {
	lconfig = readConfig(extlinuxConfigType.defaultConfig, &extlinuxConfigType);
	if (!lconfig)
	extrc = 1;
	else
	extrc = checkForExtLinux(lconfig);
	}
	if (!access(yabootConfigType.defaultConfig, F_OK)) {
	yconfig = readConfig(yabootConfigType.defaultConfig,
	&yabootConfigType);
	if (!yconfig)
	yrc = 1;
	else
	yrc = checkForYaboot(lconfig);
	}
	if (lrc == 1 || grc == 1 || gr2c == 1 || extrc == 1 || yrc == 1 ||
	erc == 1)
	return 1;
	if (lrc == 2) printf("lilo\n");
	if (gr2c == 2) printf("grub2\n");
	if (grc == 2) printf("grub\n");
	if (extrc == 2) printf("extlinux\n");
	if (yrc == 2) printf("yaboot\n");
	if (erc == 2) printf("elilo\n");
5447
5448	return 0;	const char *grubconfig = grubFindConfig(&grubConfigType);
5449	}	if (!access(grubconfig, F_OK)) {
5450		gconfig = readConfig(grubconfig, &grubConfigType);
5451		if (!gconfig)
5452		grc = 1;
5453		else
5454		grc = checkForGrub(gconfig);
5455		}
5456
5457		if (!access(liloConfigType.defaultConfig, F_OK)) {
5458		lconfig =
5459		readConfig(liloConfigType.defaultConfig,
5460		&liloConfigType);
5461		if (!lconfig)
5462		lrc = 1;
5463		else
5464		lrc = checkForLilo(lconfig);
5465		}
5466
5467	config = readConfig(grubConfig, cfi);	if (!access(eliloConfigType.defaultConfig, F_OK)) {
5468	if (!config) return 1;	econfig = readConfig(eliloConfigType.defaultConfig,
5469		&eliloConfigType);
5470		if (!econfig)
5471		erc = 1;
5472		else
5473		erc = checkForElilo(econfig);
5474		}
5475
5476	if (displayDefault) {	if (!access(extlinuxConfigType.defaultConfig, F_OK)) {
5477	struct singleLine * line;	lconfig =
5478	struct singleEntry * entry;	readConfig(extlinuxConfigType.defaultConfig,
5479	char * rootspec;	&extlinuxConfigType);
5480		if (!lconfig)
5481	if (config->defaultImage == -1) return 0;	extrc = 1;
5482	entry = findEntryByIndex(config, config->defaultImage);	else
5483	if (!entry) return 0;	extrc = checkForExtLinux(lconfig);
5484	if (!suitableImage(entry, bootPrefix, 0, flags)) return 0;	}
	line = getLineByType(LT_KERNEL|LT_HYPER, entry->lines);
	if (!line) return 0;
	rootspec = getRootSpecifier(line->elements[1].item);
	printf("%s%s\n", bootPrefix, line->elements[1].item +
	((rootspec != NULL) ? strlen(rootspec) : 0));
5485
5486	return 0;	if (!access(yabootConfigType.defaultConfig, F_OK)) {
5487		yconfig = readConfig(yabootConfigType.defaultConfig,
5488		&yabootConfigType);
5489		if (!yconfig)
5490		yrc = 1;
5491		else
5492		yrc = checkForYaboot(yconfig);
5493		}
5494
5495	} else if (displayDefaultTitle) {	if (lrc == 1 || grc == 1 || gr2c == 1 || extrc == 1 || yrc == 1
5496	struct singleLine * line;	|| erc == 1)
5497	struct singleEntry * entry;	return 1;
5498
5499	if (config->defaultImage == -1) return 0;	if (lrc == 2)
5500	entry = findEntryByIndex(config, config->defaultImage);	printf("lilo\n");
5501	if (!entry) return 0;	if (gr2c == 2)
5502		printf("grub2\n");
5503	if (!configureGrub2) {	if (grc == 2)
5504	line = getLineByType(LT_TITLE, entry->lines);	printf("grub\n");
5505	if (!line) return 0;	if (extrc == 2)
5506	printf("%s\n", line->elements[1].item);	printf("extlinux\n");
5507		if (yrc == 2)
5508		printf("yaboot\n");
5509		if (erc == 2)
5510		printf("elilo\n");
5511
5512	} else {	return 0;
5513	char * title;	}
5514
5515	dbgPrintf("This is GRUB2, default title is embeded in menuentry\n");	if (grubConfig == NULL) {
5516	line = getLineByType(LT_MENUENTRY, entry->lines);	printf("Could not find bootloader configuration file.\n");
5517	if (!line) return 0;	exit(1);
	title = grub2ExtractTitle(line);
	if (title)
	printf("%s\n", title);
5518	}	}
	return 0;
5519
5520	} else if (displayDefaultIndex) {	config = readConfig(grubConfig, cfi);
5521	if (config->defaultImage == -1) return 0;	if (!config)
5522	printf("%i\n", config->defaultImage);	return 1;
	} else if (kernelInfo)
	return displayInfo(config, kernelInfo, bootPrefix);
	if (copyDefault) {
	template = findTemplate(config, bootPrefix, NULL, 0, flags);
	if (!template) return 1;
	}
5523
5524	markRemovedImage(config, removeKernelPath, bootPrefix);	if (displayDefault) {
5525	markRemovedImage(config, removeMBKernel, bootPrefix);	struct singleLine *line;
5526	setDefaultImage(config, newKernelPath != NULL, defaultKernel, makeDefault,	struct singleEntry *entry;
5527	bootPrefix, flags);	size_t rs;
5528	setFallbackImage(config, newKernelPath != NULL);
5529	if (updateImage(config, updateKernelPath, bootPrefix, newKernelArgs,	if (config->defaultImage == NO_DEFAULT_ENTRY)
5530	removeArgs, newMBKernelArgs, removeMBKernelArgs)) return 1;	return 0;
5531	if (updateKernelPath && newKernelInitrd) {	if (config->defaultImage == DEFAULT_SAVED_GRUB2 &&
5532	if (updateInitrd(config, updateKernelPath, bootPrefix,	cfi->defaultIsSaved)
5533	newKernelInitrd)) return 1;	config->defaultImage = FIRST_ENTRY_INDEX;
5534	}	entry = findEntryByIndex(config, config->defaultImage);
5535	if (addNewKernel(config, template, bootPrefix, newKernelPath,	if (!entry)
5536	newKernelTitle, newKernelArgs, newKernelInitrd,	return 0;
5537	(const char **)extraInitrds, extraInitrdCount,	if (!suitableImage(entry, bootPrefix, 0, flags))
5538	newMBKernel, newMBKernelArgs)) return 1;	return 0;
5539
5540		line =
5541	if (numEntries(config) == 0) {	getLineByType(LT_KERNEL | LT_HYPER | LT_KERNEL_EFI |
5542	fprintf(stderr, _("grubby: doing this would leave no kernel entries. "	LT_KERNEL_16, entry->lines);
5543	"Not writing out new config.\n"));	if (!line)
5544	return 1;	return 0;
5545	}
5546		rs = getRootSpecifier(line->elements[1].item);
5547		printf("%s%s\n", bootPrefix, line->elements[1].item + rs);
5548
5549		return 0;
5550
5551		} else if (displayDefaultTitle) {
5552		struct singleLine *line;
5553		struct singleEntry *entry;
5554
5555		if (config->defaultImage == NO_DEFAULT_ENTRY)
5556		return 0;
5557		if (config->defaultImage == DEFAULT_SAVED_GRUB2 &&
5558		cfi->defaultIsSaved)
5559		config->defaultImage = FIRST_ENTRY_INDEX;
5560		entry = findEntryByIndex(config, config->defaultImage);
5561		if (!entry)
5562		return 0;
5563
5564		if (!configureGrub2) {
5565		char *title;
5566		line = getLineByType(LT_TITLE, entry->lines);
5567		if (!line)
5568		return 0;
5569		title = extractTitle(config, line);
5570		if (!title)
5571		return 0;
5572		printf("%s\n", title);
5573		free(title);
5574		} else {
5575		char *title;
5576
5577		dbgPrintf
5578		("This is GRUB2, default title is embeded in menuentry\n");
5579		line = getLineByType(LT_MENUENTRY, entry->lines);
5580		if (!line)
5581		return 0;
5582		title = grub2ExtractTitle(line);
5583		if (title)
5584		printf("%s\n", title);
5585		}
5586		return 0;
5587
5588		} else if (displayDefaultIndex) {
5589		if (config->defaultImage == NO_DEFAULT_ENTRY)
5590		return 0;
5591		if (config->defaultImage == DEFAULT_SAVED_GRUB2 &&
5592		cfi->defaultIsSaved)
5593		config->defaultImage = FIRST_ENTRY_INDEX;
5594		printf("%i\n", config->defaultImage);
5595		return 0;
5596
5597		} else if (kernelInfo)
5598		return displayInfo(config, kernelInfo, bootPrefix);
5599
5600		if (copyDefault) {
5601		template = findTemplate(config, bootPrefix, NULL, 0, flags);
5602		if (!template)
5603		return 1;
5604		}
5605
5606		markRemovedImage(config, removeKernelPath, bootPrefix);
5607		markRemovedImage(config, removeMBKernel, bootPrefix);
5608		setDefaultImage(config, newKernelPath != NULL, defaultKernel,
5609		makeDefault, bootPrefix, flags, defaultIndex,
5610		newIndex);
5611		setFallbackImage(config, newKernelPath != NULL);
5612		if (updateImage(config, updateKernelPath, bootPrefix, newKernelArgs,
5613		removeArgs, newMBKernelArgs, removeMBKernelArgs))
5614		return 1;
5615		if (updateKernelPath && newKernelInitrd) {
5616		if (newMBKernel) {
5617		if (addMBInitrd(config, newMBKernel, updateKernelPath,
5618		bootPrefix, newKernelInitrd,
5619		newKernelTitle))
5620		return 1;
5621		} else {
5622		if (updateInitrd(config, updateKernelPath, bootPrefix,
5623		newKernelInitrd, newKernelTitle))
5624		return 1;
5625		}
5626		}
5627		if (addNewKernel(config, template, bootPrefix, newKernelPath,
5628		newKernelTitle, newKernelArgs, newKernelInitrd,
5629		(const char **)extraInitrds, extraInitrdCount,
5630		newMBKernel, newMBKernelArgs, newDevTreePath,
5631		newIndex))
5632		return 1;
5633
5634		if (numEntries(config) == 0) {
5635		fprintf(stderr,
5636		_("grubby: doing this would leave no kernel entries. "
5637		"Not writing out new config.\n"));
5638		return 1;
5639		}
5640
5641	if (!outputFile)	if (!outputFile)
5642	outputFile = (char *)grubConfig;	outputFile = (char *)grubConfig;
5643
5644	return writeConfig(config, outputFile, bootPrefix);	return writeConfig(config, outputFile, bootPrefix);
5645	}	}

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