Diff of /trunk/grubby/grubby.c

Parent Directory | Revision Log | Patch

	revision 1841 by niro, Mon Jul 2 12:49:27 2012 UTC	revision 3153 by niro, Tue Jul 7 11:28:38 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	"/etc/grub.conf",	static const char *configFiles[] = {
201	"/boot/grub/grub.conf",	"/boot/grub/grub.conf",
202	"/boot/grub/menu.lst",	"/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	const char *grub2FindConfig(struct configFileInfo *cfi) {	{"kernel", LT_HYPER, ' '},
250	static const char *configFiles[] = {	{"devicetree", LT_DEVTREE, ' '},
251	"/boot/grub/grub-efi.cfg",	{NULL, 0, 0},
252	"/boot/grub/grub.cfg",	};
253	NULL
254	};	const char *grub2FindConfig(struct configFileInfo *cfi)
255	static int i = -1;	{
256	static const char *grub_cfg = "/boot/grub/grub.cfg";	static const char *configFiles[] = {
257		"/boot/grub/grub-efi.cfg",
258	if (i == -1) {	"/boot/grub/grub.cfg",
259	for (i = 0; configFiles[i] != NULL; i++) {	"/etc/grub2-efi.cfg",
260	dbgPrintf("Checking \"%s\": ", configFiles[i]);	"/etc/grub2.cfg",
261	if (!access(configFiles[i], R_OK)) {	"/boot/grub2/grub.cfg",
262		"/boot/grub2-efi/grub.cfg",
263		NULL
264		};
265		static int i = -1;
266		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		static void unquote(char *s)
358		{
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	dbgPrintf("not found\n");	/* this is a gigantic hack to avoid clobbering grub2 variables... */
391	return configFiles[i];	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 i;	{
402	int count = 0;	int count = 0;
403
404	for (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	struct keywordTypes * kw;	{
773	for (kw = cfi->keywords; kw->key; kw++) {	int kwl = strlen(kw->key);
774	if (kw->type == type)	int ll = strlen(label);
775	return kw;	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	struct keywordTypes * kw;	if (!blkid)
853	for (kw = cfi->keywords; kw->key; kw++) {	blkid_get_cache(&blkid, NULL);
	if (!strcmp(keyword, kw->key))
	return kw->type;
	}
	return LT_UNKNOWN;
	}
854
855	static struct singleLine * getLineByType(enum lineType_e type,	return blkid_get_tag_value(blkid, "UUID", device);
	struct singleLine * line) {
	dbgPrintf("getLineByType(%d): ", type);
	for (; line; line = line->next) {
	dbgPrintf("%d:%s ", line->type,
	line->numElements ? line->elements[0].item : "(empty)");
	if (line->type & type) break;
	}
	dbgPrintf(line ? "\n" : " (failed)\n");
	return line;
856	}	}
857
858	static int isBracketedTitle(struct singleLine * line) {	static enum lineType_e getTypeByKeyword(char *keyword,
859	if (line->numElements == 1 && *line->elements[0].item == '[') {	struct configFileInfo *cfi)
860	int len = strlen(line->elements[0].item);	{
861	if (*(line->elements[0].item + len - 1) == ']') {	for (struct keywordTypes * kw = cfi->keywords; kw->key; kw++) {
862	/* FIXME: this is a hack... */	if (!kwcmp(kw, keyword, cfi->caseInsensitive))
863	if (strcmp(line->elements[0].item, "[defaultboot]")) {	return kw->type;
864	return 1;	}
865	}	return LT_UNKNOWN;
	}
	}
	return 0;
866	}	}
867
868	static int isEntryStart(struct singleLine * line,	static struct singleLine *getLineByType(enum lineType_e type,
869	struct configFileInfo * cfi) {	struct singleLine *line)
870	return line->type == cfi->entryStart || line->type == LT_OTHER ||	{
871	(cfi->titleBracketed && isBracketedTitle(line));	dbgPrintf("getLineByType(%d): ", type);
872		for (; line; line = line->next) {
873		dbgPrintf("%d:%s ", line->type,
874		line->numElements ? line->elements[0].
875		item : "(empty)");
876		if (line->type & type)
877		break;
878		}
879		dbgPrintf(line ? "\n" : " (failed)\n");
880		return line;
881	}	}
882
883	/* extract the title from within brackets (for zipl) */	static int isBracketedTitle(struct singleLine *line)
884	static char * extractTitle(struct singleLine * line) {	{
885	/* bracketed title... let's extract it (leaks a byte) */	if (line->numElements == 1 && *line->elements[0].item == '[') {
886	char * title;	int len = strlen(line->elements[0].item);
887	title = strdup(line->elements[0].item);	if (*(line->elements[0].item + len - 1) == ']') {
888	title++;	/* FIXME: this is a hack... */
889	*(title + strlen(title) - 1) = '\0';	if (strcmp(line->elements[0].item, "[defaultboot]")) {
890	return title;	return 1;
891	}	}
892		}
893	static int readFile(int fd, char ** bufPtr) {	}
894	int alloced = 0, size = 0, i = 0;	return 0;
895	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;
	}
	buf = realloc(buf, size + 2);
	if (size == 0)
	buf[size++] = '\n';
	else
	if (buf[size - 1] != '\n')
	buf[size++] = '\n';
	buf[size] = '\0';
896
897	*bufPtr = buf;	static int isEntryStart(struct singleLine *line, struct configFileInfo *cfi)
898		{
899		return line->type == cfi->entryStart || line->type == LT_OTHER ||
900		(cfi->titleBracketed && isBracketedTitle(line));
901		}
902
903	return 0;	/* extract the title from within brackets (for zipl) */
904		static char *extractTitle(struct grubConfig *cfg, struct singleLine *line)
905		{
906		/* bracketed title... let's extract it */
907		char *title = NULL;
908		if (line->type == LT_TITLE) {
909		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	static void lineInit(struct singleLine * line) {	static int readFile(int fd, char **bufPtr)
925	line->indent = NULL;	{
926	line->elements = NULL;	int alloced = 0, size = 0, i = 0;
927	line->numElements = 0;	char *buf = NULL;
	line->next = NULL;
	}
	struct singleLine * lineDup(struct singleLine * line) {
	int i;
	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 (i = 0; i < newLine->numElements; i++) {
	newLine->elements[i].indent = strdup(line->elements[i].indent);
	newLine->elements[i].item = strdup(line->elements[i].item);
	}
928
929	return newLine;	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 lineFree(struct singleLine * line) {	if (i < 0) {
938	int i;	fprintf(stderr, _("error reading input: %s\n"),
939		strerror(errno));
940		free(buf);
941		return 1;
942		}
943
944	if (line->indent) free(line->indent);	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	for (i = 0; i < line->numElements; i++) {	*bufPtr = buf;
	free(line->elements[i].item);
	free(line->elements[i].indent);
	}
952
953	if (line->elements) free(line->elements);	return 0;
	lineInit(line);
954	}	}
955
956	static int lineWrite(FILE * out, struct singleLine * line,	static void lineInit(struct singleLine *line)
957	struct configFileInfo * cfi) {	{
958	int i;	line->type = LT_UNIDENTIFIED;
959		line->indent = NULL;
960		line->elements = NULL;
961		line->numElements = 0;
962		line->next = NULL;
963		}
964
965	if (fprintf(out, "%s", line->indent) == -1) return -1;	struct singleLine *lineDup(struct singleLine *line)
966		{
967		struct singleLine *newLine = malloc(sizeof(*newLine));
968
969	for (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;
	int i;
	len = strlen(line->indent);
	for (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 (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)) {
	int i;
	char indent[2] = "";
	indent[0] = kw->separatorChar;
	for (i = 1; i < line->numElements; i++) {
	char *p;
	int j;
	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 (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 i, 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	int i;	cfg->primaryIndent = strdup("");
1309	dbgPrintf("found 'set' command (%d elements): ", line->numElements);	cfg->secondaryIndent = strdup("\t");
1310	dbgPrintf("%s", line->indent);	cfg->flags = GRUB_CONFIG_NO_DEFAULT;
1311	for (i = 0; i < line->numElements; i++)	cfg->cfi = cfi;
1312	dbgPrintf("\"%s\"%s", line->elements[i].item, line->elements[i].indent);	cfg->theLines = NULL;
1313	dbgPrintf("\n");	cfg->entries = NULL;
1314	struct keywordTypes *kwType = getKeywordByType(LT_DEFAULT, cfi);	cfg->fallbackImage = 0;
1315	if (kwType && line->numElements == 3 &&	cfg->isModified = 0;
1316	!strcmp(line->elements[1].item, kwType->key)) {
1317	dbgPrintf("Line sets default config\n");	/* copy everything we have */
1318	cfg->flags &= ~GRUB_CONFIG_NO_DEFAULT;	while (*head) {
1319	defaultLine = line;	line = malloc(sizeof(*line));
1320	}	lineInit(line);
1321	} else if (line->type == LT_DEFAULT && line->numElements == 2) {
1322	cfg->flags &= ~GRUB_CONFIG_NO_DEFAULT;	if (getNextLine(&head, line, cfi)) {
1323	defaultLine = line;	free(line);
1324		/* XXX memory leak of everything in cfg */
1325	} else if (line->type == LT_KERNEL) {	return NULL;
1326	/* if by some freak chance this is multiboot and the "module"	}
	* 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.
	*/
	struct singleLine * l;
	for (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 (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 (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 (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 (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	}	}
	}
1351
1352	/* get extras */	if (line->type == LT_SET_VARIABLE) {
1353	int count = 0;	dbgPrintf("found 'set' command (%d elements): ",
1354	for (i = 0; i < line->numElements; i++) {	line->numElements);
1355	if (count >= 2) {	dbgPrintf("%s", line->indent);
1356	strcat(extras, line->elements[i].item);	for (int i = 0; i < line->numElements; i++)
1357	strcat(extras, line->elements[i].indent);	dbgPrintf("\"%s\"%s", line->elements[i].item,
1358	}	line->elements[i].indent);
1359		dbgPrintf("\n");
1360	if (!strcmp(line->elements[i].item, "menuentry"))	struct keywordTypes *kwType =
1361	continue;	getKeywordByType(LT_DEFAULT, cfi);
1362		if (kwType && line->numElements == 3
1363	/* count ' or ", there should be two in menuentry line. */	&& !strcmp(line->elements[1].item, kwType->key)
1364	if (isquote(*line->elements[i].item))	&& !is_special_grub2_variable(
1365	count++;	line->elements[2].item)) {
1366		dbgPrintf("Line sets default config\n");
1367	len = strlen(line->elements[i].item);	cfg->flags &= ~GRUB_CONFIG_NO_DEFAULT;
1368		defaultLine = line;
1369	if (isquote(line->elements[i].item[len -1]))	}
1370	count++;	} else if (iskernel(line->type)) {
1371		/* if by some freak chance this is multiboot and the
1372	/* ok, we get the final ' or ", others are extras. */	* "module" lines came earlier in the template, make
1373	}	* sure to use LT_HYPER instead of LT_KERNEL now
1374	line->elements[1].indent =	*/
1375	line->elements[line->numElements - 2].indent;	if (entry && entry->multiboot)
1376	line->elements[1].item = buf;	line->type = LT_HYPER;
	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;
1377
1378	if (sawEntry) {	} else if (line->type == LT_MBMODULE) {
1379	if (!entry->lines)	/* go back and fix the LT_KERNEL line to indicate
1380	entry->lines = line;	* LT_HYPER instead, now that we know this is a
1381	else	* multiboot entry.  This only applies to grub, but
1382	last->next = line;	* that's the only place we should find LT_MBMODULE
1383	dbgPrintf("readConfig added %s to %p\n", getKeyByType(line->type, cfi), entry);	* lines anyway.
1384		*/
1385	/* we could have seen this outside of an entry... if so, we	for (struct singleLine * l = entry->lines; l;
1386	* ignore it like any other line we don't grok */	l = l->next) {
1387	if (line->type == LT_ENTRY_END && sawEntry)	if (l->type == LT_HYPER)
1388	sawEntry = 0;	break;
1389	} else {	else if (iskernel(l->type)) {
1390	if (!cfg->theLines)	l->type = LT_HYPER;
1391	cfg->theLines = line;	break;
1392	else	}
1393	last->next = line;	}
1394	dbgPrintf("readConfig added %s to cfg\n", getKeyByType(line->type, cfi));	entry->multiboot = 1;
	}
1395
1396	last = line;	} else if (line->type == LT_HYPER) {
1397	}	entry->multiboot = 1;
1398
1399	free(incoming);	} else if (line->type == LT_FALLBACK && line->numElements == 2) {
1400		cfg->fallbackImage =
1401		strtol(line->elements[1].item, &end, 10);
1402		if (*end)
1403		cfg->fallbackImage = -1;
1404
1405		} else if ((line->type == LT_DEFAULT && cfi->defaultIsUnquoted)
1406		|| (line->type == LT_TITLE
1407		&& line->numElements > 1)) {
1408		/* make the title/default a single argument (undoing
1409		* our parsing) */
1410		len = 0;
1411		for (int i = 1; i < line->numElements; i++) {
1412		len += strlen(line->elements[i].item);
1413		len += strlen(line->elements[i].indent);
1414		}
1415		buf = malloc(len + 1);
1416		*buf = '\0';
1417
1418	dbgPrintf("defaultLine is %s\n", defaultLine ? "set" : "unset");	for (int i = 1; i < line->numElements; i++) {
1419	if (defaultLine) {	strcat(buf, line->elements[i].item);
1420	if (defaultLine->numElements > 2 &&	free(line->elements[i].item);
1421	cfi->defaultSupportSaved &&
1422	!strncmp(defaultLine->elements[2].item,"\"${saved_entry}\"", 16)) {	if ((i + 1) != line->numElements) {
1423	cfg->defaultImage = DEFAULT_SAVED_GRUB2;	strcat(buf, line->elements[i].indent);
1424	} else if (cfi->defaultIsVariable) {	free(line->elements[i].indent);
1425	char *value = defaultLine->elements[2].item;	}
1426	while (*value && (*value == '"' || *value == '\'' ||	}
	*value == ' ' || *value == '\t'))
	value++;
	cfg->defaultImage = strtol(value, &end, 10);
	while (*end && (*end == '"' || *end == '\'' ||
	*end == ' ' || *end == '\t'))
	end++;
	if (*end) cfg->defaultImage = -1;
	} else if (cfi->defaultSupportSaved &&
	!strncmp(defaultLine->elements[1].item, "saved", 5)) {
	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) {
	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;
	}
1427
1428	if (entry){	line->elements[1].indent =
1429	cfg->defaultImage = i;	line->elements[line->numElements - 1].indent;
1430	}else{	line->elements[1].item = buf;
1431	cfg->defaultImage = -1;	line->numElements = 2;
1432	}	} else if (line->type == LT_MENUENTRY && line->numElements > 3) {
1433	}	/* let --remove-kernel="TITLE=what" work */
1434	} else {	len = 0;
1435	cfg->defaultImage = 0;	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	return cfg;	/* allocate mem for extra flags. */
1448	}	extras = malloc(len + 1);
1449		*extras = '\0';
1450
1451		int buf_len = 0;
1452		/* get title. */
1453		for (int i = 0; i < line->numElements; i++) {
1454		if (!strcmp
1455		(line->elements[i].item, "menuentry"))
1456		continue;
1457		if (isquote(*line->elements[i].item)
1458		&& quote_char == '\0') {
1459		/* ensure we properly pair off quotes */
1460		quote_char = *line->elements[i].item;
1461		title = line->elements[i].item + 1;
1462		} else {
1463		title = line->elements[i].item;
1464		}
1465
1466	static void writeDefault(FILE * out, char * indent,	len = strlen(title);
1467	char * separator, struct grubConfig * cfg) {	if (title[len - 1] == quote_char) {
1468	struct singleEntry * entry;	memcpy(buf + buf_len, title, len - 1);
1469	struct singleLine * line;	buf_len += (len - 1);
1470	int i;	break;
1471		} else {
1472	if (!cfg->defaultImage && cfg->flags == GRUB_CONFIG_NO_DEFAULT) return;	memcpy(buf + buf_len, title, len);
1473		buf_len += len;
1474	if (cfg->defaultImage == DEFAULT_SAVED)	len = strlen(line->elements[i].indent);
1475	fprintf(out, "%sdefault%ssaved\n", indent, separator);	memcpy(buf + buf_len, line->elements[i].indent, len);
1476	else if (cfg->defaultImage == DEFAULT_SAVED_GRUB2)	buf_len += len;
1477	fprintf(out, "%sset default=\"${saved_entry}\"\n", indent);	}
1478	else if (cfg->defaultImage > -1) {	}
1479	if (cfg->cfi->defaultIsIndex) {	buf[buf_len] = '\0';
	if (cfg->cfi->defaultIsVariable) {
	fprintf(out, "%sset default=\"%d\"\n", indent,
	cfg->defaultImage);
	} else {
	fprintf(out, "%sdefault%s%d\n", indent, separator,
	cfg->defaultImage);
	}
	} else {
	int image = cfg->defaultImage;
1480
1481	entry = cfg->entries;	/* get extras */
1482	while (entry && entry->skip) entry = entry->next;	int count = 0;
1483		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	i = 0;	if (!strcmp
1492	while (entry && i < image) {	(line->elements[i].item, "menuentry"))
1493	entry = entry->next;	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	while (entry && entry->skip) entry = entry->next;	len = strlen(line->elements[i].item);
	i++;
	}
1504
1505	if (!entry) return;	if (line->elements[i].item[len - 1] ==
1506		quote_char)
1507		count++;
1508
1509	line = getLineByType(LT_TITLE, entry->lines);	/* ok, we get the final ' or ", others are extras. */
1510		}
1511		line->elements[1].indent =
1512		line->elements[line->numElements - 2].indent;
1513		line->elements[1].item = buf;
1514		line->elements[2].indent =
1515		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	if (line && line->numElements >= 2)	if (isquote(*line->elements[1].item))
1527	fprintf(out, "%sdefault%s%s\n", indent, separator,	memmove(line->elements[1].item,
1528	line->elements[1].item);	line->elements[1].item + 1,
1529	else if (line && (line->numElements == 1) &&	strlen(line->elements[1].item +
1530	cfg->cfi->titleBracketed) {	1) + 1);
1531	fprintf(out, "%sdefault%s%s\n", indent, separator,
1532	extractTitle(line));	last = line->numElements - 1;
1533	}	len = strlen(line->elements[last].item) - 1;
1534	}	if (isquote(line->elements[last].item[len]))
1535	}	line->elements[last].item[len] = '\0';
1536	}	}
1537		}
1538
1539	static int writeConfig(struct grubConfig * cfg, char * outName,	if (line->type == LT_DEFAULT && line->numElements == 2) {
1540	const char * prefix) {	cfg->flags &= ~GRUB_CONFIG_NO_DEFAULT;
1541	FILE * out;	defaultLine = line;
1542	struct singleLine * line;	}
	struct singleEntry * entry;
	char * tmpOutName;
	int needs = MAIN_DEFAULT;
	struct stat sb;
	int i;
	if (!strcmp(outName, "-")) {
	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(strdupa(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;
	}
	}
	}
1543
1544	line = cfg->theLines;	/* If we find a generic config option which should live at the
1545	struct keywordTypes *defaultKw = getKeywordByType(LT_DEFAULT, cfg->cfi);	top of the file, move it there. Old versions of grubby were
1546	while (line) {	probably responsible for putting new images in the wrong
1547	if (line->type == LT_SET_VARIABLE && defaultKw &&	place in front of it anyway. */
1548	line->numElements == 3 &&	if (sawEntry && line->type == LT_GENERIC) {
1549	!strcmp(line->elements[1].item, defaultKw->key)) {	struct singleLine **l = &cfg->theLines;
1550	writeDefault(out, line->indent, line->elements[0].indent, cfg);	struct singleLine **last_nonws = &cfg->theLines;
1551	needs &= ~MAIN_DEFAULT;	while (*l) {
1552	} else if (line->type == LT_DEFAULT) {	if ((*l)->type != LT_WHITESPACE)
1553	writeDefault(out, line->indent, line->elements[0].indent, cfg);	last_nonws = &((*l)->next);
1554	needs &= ~MAIN_DEFAULT;	l = &((*l)->next);
1555	} else if (line->type == LT_FALLBACK) {	}
1556	if (cfg->fallbackImage > -1)	line->next = *last_nonws;
1557	fprintf(out, "%s%s%s%d\n", line->indent,	*last_nonws = line;
1558	line->elements[0].item, line->elements[0].indent,	movedLine = 1;
1559	cfg->fallbackImage);	continue; /* without setting 'last' */
1560	} 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;
	}
	}
1561
1562	line = line->next;	/* If a second line of whitespace happens after a generic
1563	}	* option which was moved, drop it. */
1564		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	if (needs & MAIN_DEFAULT) {	if (sawEntry) {
1574	writeDefault(out, cfg->primaryIndent, "=", cfg);	if (!entry->lines)
1575	needs &= ~MAIN_DEFAULT;	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	i = 0;	/* we could have seen this outside of an entry... if
1582	while ((entry = findEntryByIndex(cfg, i++))) {	* so, we ignore it like any other line we don't grok
1583	if (entry->skip) continue;	*/
1584		if (line->type == LT_ENTRY_END && sawEntry)
1585		sawEntry = 0;
1586		} else {
1587		if (!cfg->theLines)
1588		cfg->theLines = line;
1589		else
1590		last->next = line;
1591		dbgPrintf("readConfig added %s to cfg\n",
1592		getKeyByType(line->type, cfi));
1593		}
1594
1595	line = entry->lines;	last = line;
	while (line) {
	if (lineWrite(out, line, cfg->cfi) == -1) {
	fprintf(stderr, _("grubby: error writing %s: %s\n"),
	tmpOutName, strerror(errno));
	fclose(out);
	unlink(tmpOutName);
	return 1;
	}
	line = line->next;
1596	}	}
	}
1597
1598	if (tmpOutName) {	free(incoming);
	if (rename(tmpOutName, outName)) {
	fprintf(stderr, _("grubby: error moving %s to %s: %s\n"),
	tmpOutName, outName, strerror(errno));
	unlink(outName);
	return 1;
	}
	}
1599
1600	return 0;	dbgPrintf("defaultLine is %s\n", defaultLine ? "set" : "unset");
1601	}	if (defaultLine) {
1602		if (defaultLine->numElements > 2 &&
1603		cfi->defaultSupportSaved &&
1604		!strncmp(defaultLine->elements[2].item,
1605		"\"${saved_entry}\"", 16)) {
1606		cfg->cfi->defaultIsSaved = 1;
1607		cfg->defaultImage = DEFAULT_SAVED_GRUB2;
1608		if (cfg->cfi->getEnv) {
1609		char *defTitle =
1610		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	static int numEntries(struct grubConfig *cfg) {	if (entry) {
1690	int i = 0;	cfg->defaultImage = i;
1691	struct singleEntry * entry;	} else {
1692		cfg->defaultImage = NO_DEFAULT_ENTRY;
1693	entry = cfg->entries;	}
1694	while (entry) {	}
1695	if (!entry->skip)	} else if (cfg->cfi->defaultIsSaved && cfg->cfi->getEnv) {
1696	i++;	char *defTitle = cfi->getEnv(cfg->cfi, "saved_entry");
1697	entry = entry->next;	if (defTitle) {
1698	}	int index = 0;
1699	return i;	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		struct stat sb;
1810		int i;
1811		int rc = 0;
1812
1813		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	va_start(argp, fmt);	outName = buf;
1842	fprintf(stderr, "DBG: Image entry failed: ");	outName[rc] = '\0';
1843	vfprintf(stderr, fmt, argp);	}
	printEntry(entry);
	va_end(argp);
	}
1844
1845	#define beginswith(s, c) ((s) && (s)[0] == (c))	tmpOutName = alloca(strlen(outName) + 2);
1846		sprintf(tmpOutName, "%s-", outName);
1847		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	static int endswith(const char *s, char c)	if (!stat(outName, &sb)) {
1855	{	if (chmod(tmpOutName, sb.st_mode & ~(S_IFMT))) {
1856	int slen;	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	if (!s || !s[0])	line = cfg->theLines;
1868	return 0;	struct keywordTypes *defaultKw = getKeywordByType(LT_DEFAULT, cfg->cfi);
1869	slen = strlen(s) - 1;	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	return s[slen] == c;	line = line->next;
1899	}	}
1900
1901	int suitableImage(struct singleEntry * entry, const char * bootPrefix,	if (needs & MAIN_DEFAULT) {
1902	int skipRemoved, int flags) {	writeDefault(out, cfg->primaryIndent, "=", cfg);
1903	struct singleLine * line;	needs &= ~MAIN_DEFAULT;
1904	char * fullName;	}
	int i;
	char * dev;
	char * rootspec;
	char * rootdev;
1905
1906	if (skipRemoved && entry->skip) {	i = 0;
1907	notSuitablePrintf(entry, "marked to skip\n");	while ((entry = findEntryByIndex(cfg, i++))) {
1908	return 0;	if (entry->skip)
1909	}	continue;
1910
1911		line = entry->lines;
1912		while (line) {
1913		if (lineWrite(out, line, cfg->cfi) == -1) {
1914		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	line = getLineByType(LT_KERNEL|LT_HYPER, entry->lines);	if (tmpOutName) {
1926	if (!line) {	/* write userspace buffers */
1927	notSuitablePrintf(entry, "no line found\n");	if (fflush(out))
1928	return 0;	rc = 1;
1929	}
1930	if (line->numElements < 2) {	/* purge the write-back cache with fsync() */
1931	notSuitablePrintf(entry, "line has only %d elements\n",	if (fsync(fileno(out)))
1932	line->numElements);	rc = 1;
1933	return 0;
1934	}	if (fclose(out))
1935		rc = 1;
1936
1937		if (rc == 0 && rename(tmpOutName, outName)) {
1938		unlink(tmpOutName);
1939		rc = 1;
1940		}
1941
1942	if (flags & GRUBBY_BADIMAGE_OKAY) return 1;	/* fsync() the destination directory after rename */
1943		if (rc == 0) {
1944		int dirfd;
1945
1946		dirfd = open(dirname(strdupa(outName)), O_RDONLY);
1947		if (dirfd < 0)
1948		rc = 1;
1949		else if (fsync(dirfd))
1950		rc = 1;
1951
1952	fullName = alloca(strlen(bootPrefix) +	if (dirfd >= 0)
1953	strlen(line->elements[1].item) + 1);	close(dirfd);
1954	rootspec = getRootSpecifier(line->elements[1].item);	}
	int rootspec_offset = rootspec ? strlen(rootspec) : 0;
	int hasslash = endswith(bootPrefix, '/') ||
	beginswith(line->elements[1].item + rootspec_offset, '/');
	sprintf(fullName, "%s%s%s", bootPrefix, hasslash ? "" : "/",
	line->elements[1].item + rootspec_offset);
	if (access(fullName, R_OK)) {
	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);
1955
1956	if (line && line->numElements >= 2) {	if (rc == 1)
1957	dev = line->elements[1].item;	fprintf(stderr,
1958	} else {	_("grubby: error flushing data: %m\n"));
	/* 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;
	}
	for (i = 1; i < line->numElements; i++)
	if (!strncasecmp(line->elements[i].item, "root=", 5)) break;
	if (i < line->numElements)
	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
	if (sb.st_dev == sb2.st_dev)
	return strdup("");
2141
2142	#ifdef __ia64__	static int iscomma(int c)
2143	return strdup("/boot/efi/EFI/redhat/");	{
2144	#else	return c == ',';
	return strdup("/boot");
	#endif
2145	}	}
2146
2147	void markRemovedImage(struct grubConfig * cfg, const char * image,	static int isequal(int c)
2148	const char * prefix) {	{
2149	struct singleEntry * entry;	return c == '=';
	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;
	}
	while ((entry = findEntryByPath(cfg, image, prefix, NULL)))
	entry->skip = 1;
2150	}	}
2151
2152	void setDefaultImage(struct grubConfig * config, int hasNew,	static field findField(const field *in, typeof(isspace) *isdelim, field *out)
2153	const char * defaultKernelPath, int newIsDefault,	{
2154	const char * prefix, int flags) {	field nxt = {};
2155	struct singleEntry * entry, * entry2, * newDefault;	size_t off = 0;
	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;
	}
	}
2156
2157	/* defaultImage now points to what we'd like to use, but before any order	while (off < in->chars && isdelim(in->start[off]))
2158	changes */	off++;
	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;
2159
2160	if (entry && !entry->skip) {	if (off == in->chars)
2161	/* we can preserve the default */	return nxt;
	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;
	}
	}
2162
2163	void setFallbackImage(struct grubConfig * config, int hasNew) {	out->start = &in->start[off];
2164	struct singleEntry * entry, * entry2;	out->chars = 0;
	int j;
	if (config->fallbackImage == -1) return;
	entry = findEntryByIndex(config, config->fallbackImage);
	if (!entry || entry->skip) {
	config->fallbackImage = -1;
	return;
	}
2165
2166	if (hasNew)	while (off + out->chars < in->chars && !isdelim(out->start[out->chars]))
2167	config->fallbackImage++;	out->chars++;
2168
2169	/* count the number of entries erased before this one */	nxt.start = out->start + out->chars;
2170	for (j = 0; j < config->fallbackImage; j++) {	nxt.chars = in->chars - off - out->chars;
2171	entry2 = findEntryByIndex(config, j);	return nxt;
	if (entry2->skip) config->fallbackImage--;
	}
2172	}	}
2173
2174	void displayEntry(struct singleEntry * entry, const char * prefix, int index) {	static int fieldEquals(const field *in, const char *str)
2175	struct singleLine * line;	{
2176	char * root = NULL;	return in->chars == strlen(str) &&
2177	int i;	strncmp(in->start, str, in->chars) == 0;
2178		}
	printf("index=%d\n", index);
	line = getLineByType(LT_KERNEL|LT_HYPER, entry->lines);
	if (!line) {
	printf("non linux entry\n");
	return;
	}
2179
2180	printf("kernel=%s%s\n", prefix, line->elements[1].item);	/* Parse /proc/mounts to determine the subvolume prefix. */
2181		static size_t subvolPrefix(const char *str)
2182		{
2183		FILE *file = NULL;
2184		char *line = NULL;
2185		size_t prfx = 0;
2186		size_t size = 0;
2187
2188	if (line->numElements >= 3) {	file = fopen(mounts, "r");
2189	printf("args=\"");	if (!file)
2190	i = 2;	return 0;
	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	printf("initrd=%s", prefix);	if (!opt.start)
2228	for (i = 1; i < line->numElements; i++)	continue;
	printf("%s%s", line->elements[i].item, line->elements[i].indent);
	printf("\n");
	}
2229
2230	line = getLineByType(LT_TITLE, entry->lines);	opt = findField(&opt, isequal, &val);
2231	if (line) {	if (!opt.start)
2232	printf("title=%s\n", line->elements[1].item);	continue;
	} else {
	char * title;
	line = getLineByType(LT_MENUENTRY, entry->lines);
	title = grub2ExtractTitle(line);
	if (title)
	printf("title=%s\n", title);
	}
	}
2233
2234	int parseSysconfigGrub(int * lbaPtr, char ** bootPtr) {	if (!fieldEquals(&key, "subvol"))
2235	FILE * in;	continue;
	char buf[1024];
	char * chptr;
	char * start;
	char * param;
	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);
	}
2236
2237	fclose(in);	/* We have found a btrfs subvolume mount point. */
2238
2239	return 0;	if (strncmp(val.start, str, val.chars))
2240	}	continue;
2241
2242	void dumpSysconfigGrub(void) {	if (val.start[val.chars - 1] != '/' &&
2243	char * boot;	str[val.chars] != '/')
2244	int lba;	continue;
	if (!parseSysconfigGrub(&lba, &boot)) {
	if (lba) printf("lba\n");
	if (boot) printf("boot=%s\n", boot);
	}
	}
2245
2246	int displayInfo(struct grubConfig * config, char * kernel,	/* The subvolume mount point matches our input. */
	const char * prefix) {
	int i = 0;
	struct singleEntry * entry;
	struct singleLine * line;
	entry = findEntryByPath(config, kernel, prefix, &i);
	if (!entry) {
	fprintf(stderr, _("grubby: kernel not found\n"));
	return 1;
	}
2247
2248	/* this is a horrible hack to support /etc/conf.d/grub; there must	if (prfx < val.chars)
2249	be a better way */	prfx = val.chars;
2250	if (config->cfi == &grubConfigType) {	}
	dumpSysconfigGrub();
	} else {
	line = getLineByType(LT_BOOT, config->theLines);
	if (line && line->numElements >= 1) {
	printf("boot=%s\n", line->elements[1].item);
2251	}	}
2252
2253	line = getLineByType(LT_LBA, config->theLines);	dbgPrintf("%s(): str: '%s', prfx: '%s'\n", __FUNCTION__, str, prfx);
	if (line) printf("lba\n");
	}
2254
2255	displayEntry(entry, prefix, i);	fclose(file);
2256		free(line);
2257		return prfx;
2258		}
2259
2260	i++;	int suitableImage(struct singleEntry *entry, const char *bootPrefix,
2261	while ((entry = findEntryByPath(config, kernel, prefix, &i))) {	int skipRemoved, int flags)
2262	displayEntry(entry, prefix, i);	{
2263	i++;	struct singleLine *line;
2264	}	char *fullName;
2265		int i;
2266		char *dev;
2267		size_t rs;
2268		char *rootdev;
2269
2270	return 0;	if (skipRemoved && entry->skip) {
2271	}	notSuitablePrintf(entry, 0, "marked to skip\n");
2272		return 0;
2273		}
2274
2275	struct singleLine * addLineTmpl(struct singleEntry * entry,	line =
2276	struct singleLine * tmplLine,	getLineByType(LT_KERNEL | LT_HYPER | LT_KERNEL_EFI | LT_KERNEL_16,
2277	struct singleLine * prevLine,	entry->lines);
2278	const char * val,	if (!line) {
2279	struct configFileInfo * cfi)	notSuitablePrintf(entry, 0, "no line found\n");
2280	{	return 0;
2281	struct singleLine * newLine = lineDup(tmplLine);	}
2282		if (line->numElements < 2) {
2283	if (val) {	notSuitablePrintf(entry, 0, "line has only %d elements\n",
2284	/* override the inherited value with our own.	line->numElements);
2285	* This is a little weak because it only applies to elements[1]	return 0;
	*/
	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);
	}
2286	}	}
	}
2287
2288	dbgPrintf("addLineTmpl(%s)\n", newLine->numElements ?	if (flags & GRUBBY_BADIMAGE_OKAY) {
2289	newLine->elements[0].item : "");	notSuitablePrintf(entry, 1, "\n");
2290		return 1;
2291		}
2292
2293	if (!entry->lines) {	fullName = alloca(strlen(bootPrefix) +
2294	/* first one on the list */	strlen(line->elements[1].item) + 1);
2295	entry->lines = newLine;	rs = getRootSpecifier(line->elements[1].item);
2296	} else if (prevLine) {	int hasslash = endswith(bootPrefix, '/') ||
2297	/* add after prevLine */	beginswith(line->elements[1].item + rs, '/');
2298	newLine->next = prevLine->next;	sprintf(fullName, "%s%s%s", bootPrefix, hasslash ? "" : "/",
2299	prevLine->next = newLine;	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	return newLine;	if (line && line->numElements >= 2) {
2314	}	dev = line->elements[1].item;
2315		} else {
2316		/* didn't succeed in finding a LT_ROOT, let's try
2317		* LT_KERNELARGS.  grub+multiboot uses LT_MBMODULE
2318		* for the args, so check that too.
2319		*/
2320		line =
2321		getLineByType(LT_KERNELARGS | LT_MBMODULE,
2322		entry->lines);
2323
2324		/* failed to find one */
2325		if (!line) {
2326		notSuitablePrintf(entry, 0, "no line found\n");
2327		return 0;
2328		}
2329
2330	/* val may be NULL */	for (i = 1; i < line->numElements; i++)
2331	struct singleLine *  addLine(struct singleEntry * entry,	if (!strncasecmp
2332	struct configFileInfo * cfi,	(line->elements[i].item, "root=", 5))
2333	enum lineType_e type, char * defaultIndent,	break;
2334	const char * val) {	if (i < line->numElements)
2335	struct singleLine * line, * prev;	dev = line->elements[i].item + 5;
2336	struct keywordTypes * kw;	else {
2337	struct singleLine tmpl;	notSuitablePrintf(entry, 0,
2338		"no root= entry found\n");
2339	/* NB: This function shouldn't allocate items on the heap, rather on the	/* it failed too...  can't find root= */
2340	* stack since it calls addLineTmpl which will make copies.	return 0;
2341	*/	}
2342		}
	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 = "";
2343	}	}
	}
	/* 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;
	}
2344
2345	struct singleLine *menuEntry;	dev = getpathbyspec(dev);
2346	menuEntry = getLineByType(LT_MENUENTRY, entry->lines);	if (!getpathbyspec(dev)) {
2347	if (tmpl.type == LT_ENTRY_END) {	notSuitablePrintf(entry, 0, "can't find blkid entry for %s\n",
2348	if (menuEntry)	dev);
2349	tmpl.indent = menuEntry->indent;	return 0;
2350	else	} else
2351	tmpl.indent = defaultIndent ?: "";	dev = getpathbyspec(dev);
	} else if (tmpl.type != LT_MENUENTRY) {
	if (menuEntry)
	tmpl.indent = "\t";
	else if (prev == entry->lines)
	tmpl.indent = defaultIndent ?: "";
	else
	tmpl.indent = prev->indent;
	}
2352
2353	return addLineTmpl(entry, &tmpl, prev, val, cfi);	rootdev = findDiskForRoot();
2354	}	if (!rootdev) {
2355		notSuitablePrintf(entry, 0, "can't find root device\n");
2356		return 0;
2357		}
2358
2359	void removeLine(struct singleEntry * entry, struct singleLine * line) {	if (!getuuidbydev(rootdev) || !getuuidbydev(dev)) {
2360	struct singleLine * prev;	notSuitablePrintf(entry, 0,
2361	int i;	"uuid missing: rootdev %s, dev %s\n",
2362		getuuidbydev(rootdev), getuuidbydev(dev));
2363		free(rootdev);
2364		return 0;
2365		}
2366
2367	for (i = 0; i < line->numElements; i++) {	if (strcmp(getuuidbydev(rootdev), getuuidbydev(dev))) {
2368	free(line->elements[i].item);	notSuitablePrintf(entry, 0,
2369	free(line->elements[i].indent);	"uuid mismatch: rootdev %s, dev %s\n",
2370	}	getuuidbydev(rootdev), getuuidbydev(dev));
2371	free(line->elements);	free(rootdev);
2372	free(line->indent);	return 0;
2373		}
2374
2375	if (line == entry->lines) {	free(rootdev);
2376	entry->lines = line->next;	notSuitablePrintf(entry, 1, "\n");
	} else {
	prev = entry->lines;
	while (prev->next != line) prev = prev->next;
	prev->next = line->next;
	}
2377
2378	free(line);	return 1;
2379	}	}
2380
2381	static void requote(struct singleLine *tmplLine, struct configFileInfo * cfi)	/* returns the first match on or after the one pointed to by index (if index
2382		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 singleLine newLine = {	struct singleEntry *entry = NULL;
2388	.indent = tmplLine->indent,	struct singleLine *line;
2389	.type = tmplLine->type,	int i;
2390	.next = tmplLine->next,	char *chptr;
2391	};	enum lineType_e checkType = LT_KERNEL;
2392	int firstQuotedItem = -1;
2393	int quoteLen = 0;	if (isdigit(*kernel)) {
2394	int j;	int *indexVars = alloca(sizeof(*indexVars) * strlen(kernel));
2395	int element = 0;
2396	char *c;	i = 0;
2397		indexVars[i] = strtol(kernel, &chptr, 10);
2398	c = malloc(strlen(tmplLine->elements[0].item) + 1);	while (*chptr == ',') {
2399	strcpy(c, tmplLine->elements[0].item);	i++;
2400	insertElement(&newLine, c, element++, cfi);	kernel = chptr + 1;
2401	free(c);	indexVars[i] = strtol(kernel, &chptr, 10);
2402	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;
	}
2403
2404	line->elements = realloc(line->elements, (line->numElements + 1) *	if (*chptr) {
2405	sizeof(*line->elements));	/* can't parse it, bail */
2406	memmove(&line->elements[insertHere+1],	return NULL;
2407	&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] = ' ';
	}
2408
2409	if (insertHere > 0 && line->elements[insertHere-1].indent[0] == '\0') {	indexVars[i + 1] = -1;
	/* 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);
	}
2410
2411	line->numElements++;	i = 0;
2412		if (index) {
2413		while (i < *index) {
2414		i++;
2415		if (indexVars[i] == -1)
2416		return NULL;
2417		}
2418		}
2419
2420	dbgPrintf("insertElement(%s, '%s%s', %d)\n",	entry = findEntryByIndex(config, indexVars[i]);
2421	line->elements[0].item,	if (!entry)
2422	line->elements[insertHere].item,	return NULL;
2423	line->elements[insertHere].indent,
2424	insertHere);	line =
2425	}	getLineByType(LT_KERNEL | LT_HYPER | LT_KERNEL_EFI |
2426		LT_KERNEL_16, entry->lines);
2427	static void removeElement(struct singleLine * line, int removeHere) {	if (!line)
2428	int i;	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	/* sanity check */	while ((entry = findEntryByIndex(config, i))) {
2452	if (removeHere >= line->numElements) return;	if (!entry->skip)
2453		break;
2454		i++;
2455		}
2456
2457	dbgPrintf("removeElement(%s, %d:%s)\n", line->elements[0].item,	if (entry && index)
2458	removeHere, line->elements[removeHere].item);	*index = i;
2459		} else {
2460		if (index)
2461		i = *index;
2462		else
2463		i = 0;
2464
2465	free(line->elements[removeHere].item);	if (!strncmp(kernel, "TITLE=", 6)) {
2466		prefix = "";
2467		checkType = LT_TITLE | LT_MENUENTRY;
2468		kernel += 6;
2469		}
2470
2471	if (removeHere > 1) {	for (entry = findEntryByIndex(config, i); entry;
2472	/* previous argument gets this argument's post-indentation */	entry = entry->next, i++) {
2473	free(line->elements[removeHere-1].indent);	if (entry->skip)
2474	line->elements[removeHere-1].indent =	continue;
2475	line->elements[removeHere].indent;
2476	} else {	dbgPrintf("findEntryByPath looking for %d %s in %p\n",
2477	free(line->elements[removeHere].indent);	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	/* now collapse the array, but don't bother to realloc smaller */	/* make sure this entry has a kernel identifier; this skips
2507	for (i = removeHere; i < line->numElements - 1; i++)	* non-Linux boot entries (could find netbsd etc, though, which is
2508	line->elements[i] = line->elements[i + 1];	* unfortunate)
2509		*/
2510	line->numElements--;	if (line
2511	}	&& getLineByType(LT_KERNEL | LT_HYPER |
2512		LT_KERNEL_EFI | LT_KERNEL_16,
2513	int argMatch(const char * one, const char * two) {	entry->lines))
2514	char * first, * second;	break; /* found 'im! */
2515	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;
	}
	}
2516
2517	if (!removeArgs) {	if (index)
2518	oldArgs = malloc(sizeof(*oldArgs));	*index = i;
	*oldArgs = NULL;
	} else {
	if (poptParseArgvString(removeArgs, NULL, &oldArgs)) {
	fprintf(stderr,
	_("grubby: error separating arguments '%s'\n"), removeArgs);
	free(newArgs);
	return 1;
2519	}	}
	}
2520
2521		return entry;
2522		}
2523
2524	useKernelArgs = (getKeywordByType(LT_KERNELARGS, cfg->cfi)	struct singleEntry *findEntryByTitle(struct grubConfig *cfg, char *title,
2525	&& (!multibootArgs || cfg->cfi->mbConcatArgs));	int *index)
2526		{
2527		struct singleEntry *entry;
2528		struct singleLine *line;
2529		int i;
2530		char *newtitle;
2531
2532		for (i = 0, entry = cfg->entries; entry; entry = entry->next, i++) {
2533		if (index && i < *index)
2534		continue;
2535		line = getLineByType(LT_TITLE, entry->lines);
2536		if (!line)
2537		line = getLineByType(LT_MENUENTRY, entry->lines);
2538		if (!line)
2539		continue;
2540		newtitle = grub2ExtractTitle(line);
2541		if (!newtitle)
2542		continue;
2543		if (!strcmp(title, newtitle))
2544		break;
2545		}
2546
2547	useRoot = (getKeywordByType(LT_ROOT, cfg->cfi)	if (!entry)
2548	&& !multibootArgs);	return NULL;
2549
2550	for (; (entry = findEntryByPath(cfg, image, prefix, &index)); index++) {	if (index)
2551		*index = i;
2552		return entry;
2553		}
2554
2555	if (multibootArgs && !entry->multiboot)	struct singleEntry *findEntryByIndex(struct grubConfig *cfg, int index)
2556	continue;	{
2557		struct singleEntry *entry;
2558
2559	/* Determine where to put the args.  If this config supports	entry = cfg->entries;
2560	* LT_KERNELARGS, use that.  Otherwise use	while (index && entry) {
2561	* LT_HYPER/LT_KERNEL/LT_MBMODULE lines.	entry = entry->next;
2562	*/	index--;
	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;
	} else {
	line = getLineByType(LT_KERNEL|LT_MBMODULE, entry->lines);
	if (!line) {
	/* no LT_KERNEL or LT_MBMODULE in this entry? */
	continue;
	}
	firstElement = 2;
2563	}	}
2564
2565	/* handle the elilo case which does:	return entry;
2566	*   append="hypervisor args -- kernel args"	}
	*/
	if (entry->multiboot && cfg->cfi->mbConcatArgs) {
	/* this is a multiboot entry, make sure there's
	* -- on the args line
	*/
	for (i = firstElement; i < line->numElements; i++) {
	if (!strcmp(line->elements[i].item, "--"))
	break;
	}
	if (i == line->numElements) {
	/* assume all existing args are kernel args,
	* prepend -- to make it official
	*/
	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;
	}
	}
2567
2568	if (i < line->numElements && doreplace) {	/* Find a good template to use for the new kernel. An entry is
2569	/* direct replacement */	* good if the kernel and mkinitrd exist (even if the entry
2570	free(line->elements[i].item);	* is going to be removed). Try and use the default entry, but
2571	line->elements[i].item = strdup(*arg);	* if that doesn't work just take the first. If we can't find one,
2572		* bail. */
2573		struct singleEntry *findTemplate(struct grubConfig *cfg, const char *prefix,
2574		int *indexPtr, int skipRemoved, int flags)
2575		{
2576		struct singleEntry *entry, *entry2;
2577		int index;
2578
2579	} else if (useRoot && !strncmp(*arg, "root=/dev/", 10)) {	if (cfg->cfi->defaultIsSaved) {
2580	/* root= replacement */	if (cfg->cfi->getEnv) {
2581	rootLine = getLineByType(LT_ROOT, entry->lines);	char *defTitle =
2582	if (rootLine) {	cfg->cfi->getEnv(cfg->cfi, "saved_entry");
2583	free(rootLine->elements[1].item);	if (defTitle) {
2584	rootLine->elements[1].item = strdup(*arg + 5);	int index = 0;
2585	} else {	if (isnumber(defTitle)) {
2586	rootLine = addLine(entry, cfg->cfi, LT_ROOT,	index = atoi(defTitle);
2587	cfg->secondaryIndent, *arg + 5);	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	}	}
	}
	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);
2610	}	}
	}
2611
2612	free(newArgs);	index = 0;
2613	free(oldArgs);	while ((entry = findEntryByIndex(cfg, index))) {
2614		if (suitableImage(entry, prefix, skipRemoved, flags)) {
2615		int j, unmodifiedIndex;
2616
2617		unmodifiedIndex = index;
2618
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 0;	return entry;
2628	}	}
2629
2630	int updateImage(struct grubConfig * cfg, const char * image,	index++;
	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;
2631	}	}
2632
2633	break;	fprintf(stderr,
2634	}	_("grubby fatal error: unable to find a suitable template\n"));
2635
2636	return 0;	return NULL;
2637	}	}
2638
2639	int checkDeviceBootloader(const char * device, const unsigned char * boot) {	char *findBootPrefix(void)
2640	int fd;	{
2641	unsigned char bootSect[512];	struct stat sb, sb2;
	int offset;
	fd = open(device, O_RDONLY);
	if (fd < 0) {
	fprintf(stderr, _("grubby: unable to open %s: %s\n"),
	device, strerror(errno));
	return 1;
	}
2642
2643	if (read(fd, bootSect, 512) != 512) {	stat("/", &sb);
2644	fprintf(stderr, _("grubby: unable to read %s: %s\n"),	#ifdef __ia64__
2645	device, strerror(errno));	stat("/boot/efi/EFI/redhat/", &sb2);
2646	return 1;	#else
2647	}	stat("/boot", &sb2);
2648	close(fd);	#endif
2649
2650	/* first three bytes should match, a jmp short should be in there */	if (sb.st_dev == sb2.st_dev)
2651	if (memcmp(boot, bootSect, 3))	return strdup("");
	return 0;
2652
2653	if (boot[1] == JMP_SHORT_OPCODE) {	#ifdef __ia64__
2654	offset = boot[2] + 2;	return strdup("/boot/efi/EFI/redhat/");
2655	} else if (boot[1] == 0xe8 || boot[1] == 0xe9) {	#else
2656	offset = (boot[3] << 8) + boot[2] + 2;	return strdup("/boot");
2657	} else if (boot[0] == JMP_SHORT_OPCODE) {	#endif
2658	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;
	}
2659
2660	if (memcmp(boot + offset, bootSect + offset, CODE_SEG_SIZE))	void markRemovedImage(struct grubConfig *cfg, const char *image,
2661	return 0;	const char *prefix)
2662		{
2663		struct singleEntry *entry;
2664
2665		if (!image)
2666		return;
2667
2668	return 2;	/* 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		while ((entry = findEntryByPath(cfg, image, prefix, NULL)))
2677		entry->skip = 1;
2678	}	}
2679
2680	int checkLiloOnRaid(char * mdDev, const unsigned char * boot) {	void setDefaultImage(struct grubConfig *config, int isAddingBootEntry,
2681	int fd;	const char *defaultKernelPath, int newBootEntryIsDefault,
2682	char buf[65536];	const char *prefix, int flags,
2683	char * end;	int newDefaultBootEntryIndex, int newBootEntryIndex)
2684	char * chptr;	{
2685	char * chptr2;	struct singleEntry *bootEntry, *newDefault;
2686	int rc;	int indexToVerify, firstKernelEntryIndex, currentLookupIndex;
2687
2688	/* it's on raid; we need to parse /proc/mdstat and check all of the	/* initialize */
2689	*raw* devices listed in there */	currentLookupIndex = FIRST_ENTRY_INDEX;
2690
2691	if (!strncmp(mdDev, "/dev/", 5))	/* handle the two cases where the user explictly picks the default
2692	mdDev += 5;	* boot entry index as it would exist post-modification */
2693
2694	if ((fd = open("/proc/mdstat", O_RDONLY)) < 0) {	/* Case 1: user chose to make the latest boot entry the default */
2695	fprintf(stderr, _("grubby: failed to open /proc/mdstat: %s\n"),	if (newBootEntryIsDefault) {
2696	strerror(errno));	config->defaultImage = newBootEntryIndex;
2697	return 2;	return;
2698	}	}
2699
2700	rc = read(fd, buf, sizeof(buf) - 1);	/* Case 2: user picked an arbitrary index as the default boot entry */
2701	if (rc < 0 || rc == (sizeof(buf) - 1)) {	if (newDefaultBootEntryIndex >= FIRST_ENTRY_INDEX) {
2702	fprintf(stderr, _("grubby: failed to read /proc/mdstat: %s\n"),	indexToVerify = newDefaultBootEntryIndex;
	strerror(errno));
	close(fd);
	return 2;
	}
	close(fd);
	buf[rc] = '\0';
2703
2704	chptr = buf;	/* user chose to make latest boot entry the default */
2705	while (*chptr) {	if (newDefaultBootEntryIndex == newBootEntryIndex) {
2706	end = strchr(chptr, '\n');	config->defaultImage = newBootEntryIndex;
2707	if (!end) break;	return;
2708	*end = '\0';	}
2709
2710	if (!strncmp(chptr, mdDev, strlen(mdDev)) &&	/* the user picks the default index based on the
2711	chptr[strlen(mdDev)] == ' ') {	* order of the bootloader configuration after
2712		* modification; ensure we are checking for the
2713		* existence of the correct entry */
2714		if (newBootEntryIndex < newDefaultBootEntryIndex) {
2715		if (!config->isModified)
2716		indexToVerify--;
2717		}
2718
2719	/* found the device */	/* verify the user selected index will exist */
2720	while (*chptr && *chptr != ':') chptr++;	if (findEntryByIndex(config, indexToVerify)) {
2721	chptr++;	config->defaultImage = newDefaultBootEntryIndex;
2722	while (*chptr && isspace(*chptr)) chptr++;	} else {
2723		config->defaultImage = NO_DEFAULT_ENTRY;
2724	/* 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++;
	}
2725
2726	/*  we're good to go */	return;
	return 2;
2727	}	}
2728
2729	chptr = end + 1;	/* handle cases where the index value may shift */
	}
	fprintf(stderr,
	_("grubby: raid device /dev/%s not found in /proc/mdstat\n"),
	mdDev);
	return 0;
	}
2730
2731	int checkForLilo(struct grubConfig * config) {	/* check validity of existing default or first-entry-found
2732	int fd;	selection */
2733	unsigned char boot[512];	if (defaultKernelPath) {
2734	struct singleLine * line;	/* we must initialize this */
2735		firstKernelEntryIndex = 0;
2736	for (line = config->theLines; line; line = line->next)	/* user requested first-entry-found */
2737	if (line->type == LT_BOOT) break;	if (!findEntryByPath(config, defaultKernelPath,
2738		prefix, &firstKernelEntryIndex)) {
2739	if (!line) {	/* don't change default if can't find match */
2740	fprintf(stderr,	config->defaultImage = NO_DEFAULT_ENTRY;
2741	_("grubby: no boot line found in lilo configuration\n"));	return;
2742	return 1;	}
	}
2743
2744	if (line->numElements != 2) return 1;	config->defaultImage = firstKernelEntryIndex;
2745
2746	fd = open("/boot/boot.b", O_RDONLY);	/* this is where we start looking for decrement later */
2747	if (fd < 0) {	currentLookupIndex = config->defaultImage;
	fprintf(stderr, _("grubby: unable to open %s: %s\n"),
	"/boot/boot.b", strerror(errno));
	return 1;
	}
2748
2749	if (read(fd, boot, 512) != 512) {	if (isAddingBootEntry && !config->isModified &&
2750	fprintf(stderr, _("grubby: unable to read %s: %s\n"),	(newBootEntryIndex < config->defaultImage)) {
2751	"/boot/boot.b", strerror(errno));	/* increment because new entry added before default */
2752	return 1;	config->defaultImage++;
2753	}	}
2754	close(fd);	} else {
2755		/* check to see if the default is stored in the environment */
2756		if (config->defaultImage < FIRST_ENTRY_INDEX) {
2757		if (config->defaultImage == DEFAULT_SAVED || config->defaultImage == DEFAULT_SAVED_GRUB2)
2758		{
2759		if (config->cfi->defaultIsSaved) {
2760		if (config->cfi->getEnv) {
2761		char *defaultTitle = config->cfi->getEnv(config->cfi, "saved_entry");
2762
2763		if (defaultTitle) {
2764		if (isnumber(defaultTitle)) {
2765		currentLookupIndex = atoi(defaultTitle);
2766		} else {
2767		findEntryByTitle(config, defaultTitle, &currentLookupIndex);
2768		}
2769		/* set the default Image to an actual index */
2770		config->defaultImage = currentLookupIndex;
2771		}
2772		}
2773		}
2774		}
2775		} else {
2776		/* use pre-existing default entry from the file*/
2777		currentLookupIndex = config->defaultImage;
2778		}
2779
2780	if (!strncmp("/dev/md", line->elements[1].item, 7))	if (isAddingBootEntry
2781	return checkLiloOnRaid(line->elements[1].item, boot);	&& (newBootEntryIndex <= config->defaultImage)) {
2782		config->defaultImage++;
2783
2784	return checkDeviceBootloader(line->elements[1].item, boot);	if (config->isModified) {
2785	}	currentLookupIndex++;
2786		}
2787		}
2788		}
2789
2790	int checkForGrub2(struct grubConfig * config) {	/* sanity check - is this entry index valid? */
2791	if (!access("/etc/grub.d/", R_OK))	bootEntry = findEntryByIndex(config, currentLookupIndex);
	return 2;
2792
2793	return 1;	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 checkForGrub(struct grubConfig * config) {	return;
2807	int fd;	}
	unsigned char bootSect[512];
	char * boot;
2808
2809	if (parseSysconfigGrub(NULL, &boot))	currentLookupIndex--;
	return 0;
2810
2811	/* assume grub is not installed -- not an error condition */	/* decrement index by the total number of entries deleted */
	if (!boot)
	return 0;
2812
2813	fd = open("/boot/grub/stage1", O_RDONLY);	for (indexToVerify = currentLookupIndex;
2814	if (fd < 0)	indexToVerify >= FIRST_ENTRY_INDEX; indexToVerify--) {
	/* this doesn't exist if grub hasn't been installed */
	return 0;
2815
2816	if (read(fd, bootSect, 512) != 512) {	bootEntry = findEntryByIndex(config, indexToVerify);
	fprintf(stderr, _("grubby: unable to read %s: %s\n"),
	"/boot/grub/stage1", strerror(errno));
	close(fd);
	return 1;
	}
	close(fd);
2817
2818	return checkDeviceBootloader(boot, bootSect);	if (bootEntry && bootEntry->skip) {
2819		config->defaultImage--;
2820		}
2821		}
2822	}	}
2823
2824	int checkForExtLinux(struct grubConfig * config) {	void setFallbackImage(struct grubConfig *config, int hasNew)
2825	int fd;	{
2826	unsigned char bootSect[512];	struct singleEntry *entry, *entry2;
2827	char * boot;	int j;
	char executable[] = "/boot/extlinux/extlinux";
	printf("entered: checkForExtLinux()\n");
	if (parseSysconfigGrub(NULL, &boot))
	return 0;
2828
2829	/* assume grub is not installed -- not an error condition */	if (config->fallbackImage == -1)
2830	if (!boot)	return;
	return 0;
2831
2832	fd = open(executable, O_RDONLY);	entry = findEntryByIndex(config, config->fallbackImage);
2833	if (fd < 0)	if (!entry || entry->skip) {
2834	/* this doesn't exist if grub hasn't been installed */	config->fallbackImage = -1;
2835	return 0;	return;
2836		}
2837
2838	if (read(fd, bootSect, 512) != 512) {	if (hasNew)
2839	fprintf(stderr, _("grubby: unable to read %s: %s\n"),	config->fallbackImage++;
	executable, strerror(errno));
	return 1;
	}
	close(fd);
2840
2841	return checkDeviceBootloader(boot, bootSect);	/* 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	static char * getRootSpecifier(char * str) {	void displayEntry(struct grubConfig *config, struct singleEntry *entry, const char *prefix, int index)
2850	char * idx, * rootspec = NULL;	{
2851		struct singleLine *line;
2852		char *root = NULL;
2853		int i;
2854		int j;
2855
2856	if (*str == '(') {	printf("index=%d\n", index);
	idx = rootspec = strdup(str);
	while(*idx && (*idx != ')') && (!isspace(*idx))) idx++;
	*(++idx) = '\0';
	}
	return rootspec;
	}
2857
2858	static char * getInitrdVal(struct grubConfig * config,	line =
2859	const char * prefix, struct singleLine *tmplLine,	getLineByType(LT_KERNEL | LT_HYPER | LT_KERNEL_EFI | LT_KERNEL_16,
2860	const char * newKernelInitrd,	entry->lines);
2861	char ** extraInitrds, int extraInitrdCount)	if (!line) {
2862	{	printf("non linux entry\n");
2863	char *initrdVal, *end;	return;
2864	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;
	}
2865
2866	initrdVal = end = malloc(totalSize);	if (!strncmp(prefix, line->elements[1].item, strlen(prefix)))
2867		printf("kernel=%s\n", line->elements[1].item);
2868		else
2869		printf("kernel=%s%s\n", prefix, line->elements[1].item);
2870
2871	end = stpcpy (end, newKernelInitrd + prefixLen);	if (line->numElements >= 3) {
2872		printf("args=\"");
2873		i = 2;
2874		while (i < line->numElements) {
2875		if (!strncmp(line->elements[i].item, "root=", 5)) {
2876		root = line->elements[i].item + 5;
2877		} else {
2878		printf("%s%s", line->elements[i].item,
2879		line->elements[i].indent);
2880		}
2881
2882	separatorChar = getKeywordByType(LT_INITRD, config->cfi)->separatorChar;	i++;
2883	for (i = 0; i < extraInitrdCount; i++) {	}
2884	const char *extraInitrd;	printf("\"\n");
2885	int j;	} else {
2886		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	extraInitrd = extraInitrds[i] + prefixLen;	printf("%s%s", s,
2900	/* Don't add entries that are already there */	line->elements[i].indent);
2901	if (tmplLine != NULL) {	}
	for (j = 2; j < tmplLine->numElements; j++)
	if (strcmp(extraInitrd, tmplLine->elements[j].item) == 0)
	break;
2902
2903	if (j != tmplLine->numElements)	i++;
2904	continue;	}
	}
2905
2906	*end++ = separatorChar;	s = line->elements[i - 1].indent;
2907	end = stpcpy(end, extraInitrd);	printf("\"\n");
2908	}	}
2909		}
2910
2911	return initrdVal;	if (!root) {
2912	}	line = getLineByType(LT_ROOT, entry->lines);
2913		if (line && line->numElements >= 2)
2914		root = line->elements[1].item;
2915		}
2916
2917	int addNewKernel(struct grubConfig * config, struct singleEntry * template,	if (root) {
2918	const char * prefix,	char *s = alloca(strlen(root) + 1);
	char * newKernelPath, char * newKernelTitle,
	char * newKernelArgs, char * newKernelInitrd,
	char ** extraInitrds, int extraInitrdCount,
	char * newMBKernel, 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;
2919
2920	sprintf(buf, "TITLE=%.*s", config->cfi->maxTitleLength, newKernelTitle);	strcpy(s, root);
2921	while (findEntryByPath(config, buf, NULL, NULL)) {	if (s[strlen(s) - 1] == '"')
2922	sprintf(numBuf, "%d", i++);	s[strlen(s) - 1] = '\0';
2923	strcpy(buf + strlen(buf) - strlen(numBuf), numBuf);	/* make sure the root doesn't have a trailing " */
2924		printf("root=%s\n", s);
2925	}	}
2926
2927	newKernelTitle = buf + 6;	line =
2928	}	getLineByType(LT_INITRD | LT_INITRD_EFI | LT_INITRD_16,
2929		entry->lines);
2930
2931	new = malloc(sizeof(*new));	if (line && line->numElements >= 2) {
2932	new->skip = 0;	if (!strncmp(prefix, line->elements[1].item, strlen(prefix)))
2933	new->multiboot = 0;	printf("initrd=");
2934	new->next = config->entries;	else
2935	new->lines = NULL;	printf("initrd=%s", prefix);
	config->entries = new;
	/* copy/update from the template */
	needs = NEED_KERNEL | NEED_TITLE;
	if (newKernelInitrd)
	needs |= NEED_INITRD;
	if (newMBKernel) {
	needs |= NEED_MB;
	new->multiboot = 1;
	}
2936
2937	if (template) {	for (i = 1; i < line->numElements; i++)
2938	for (masterLine = template->lines;	printf("%s%s", line->elements[i].item,
2939	masterLine && (tmplLine = lineDup(masterLine));	line->elements[i].indent);
2940	lineFree(tmplLine), masterLine = masterLine->next)	printf("\n");
	{
	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);
	}
2941	}	}
2942
2943	} else {	line = getLineByType(LT_TITLE, entry->lines);
2944	/* don't have a template, so start the entry with the	if (line) {
2945	* appropriate starting line	char *entryTitle;
2946	*/	/* if we can extractTitle, then it's a zipl config and
2947	switch (config->cfi->entryStart) {	* if not then we go ahead with what's existed prior */
2948	case LT_KERNEL:	entryTitle = extractTitle(config, line);
2949	if (new->multiboot && config->cfi->mbHyperFirst) {	if (!entryTitle) {
2950	/* fall through to LT_HYPER */	entryTitle=line->elements[1].item;
2951	} else {	}
2952	newLine = addLine(new, config->cfi, LT_KERNEL,	printf("title=%s\n", entryTitle);
2953	config->primaryIndent,	} else {
2954	newKernelPath + strlen(prefix));	char *title;
2955	needs &= ~NEED_KERNEL;	line = getLineByType(LT_MENUENTRY, entry->lines);
2956	break;	if (line) {
2957		title = grub2ExtractTitle(line);
2958		if (title)
2959		printf("title=%s\n", title);
2960	}	}
2961		}
2962
2963	case LT_HYPER:	for (j = 0, line = entry->lines; line; line = line->next) {
2964	newLine = addLine(new, config->cfi, LT_HYPER,	if ((line->type & LT_MBMODULE) && line->numElements >= 2) {
2965	config->primaryIndent,	if (!strncmp
2966	newMBKernel + strlen(prefix));	(prefix, line->elements[1].item, strlen(prefix)))
2967	needs &= ~NEED_MB;	printf("mbmodule%d=", j);
2968	break;	else
2969		printf("mbmodule%d=%s", j, prefix);
2970	case LT_MENUENTRY: {
2971	char *nkt = malloc(strlen(newKernelTitle)+3);	for (i = 1; i < line->numElements; i++)
2972	strcpy(nkt, "'");	printf("%s%s", line->elements[i].item,
2973	strcat(nkt, newKernelTitle);	line->elements[i].indent);
2974	strcat(nkt, "'");	printf("\n");
2975	newLine = addLine(new, config->cfi, LT_MENUENTRY,	j++;
	config->primaryIndent, nkt);
	free(nkt);
	needs &= ~NEED_TITLE;
	needs |= NEED_END;
	break;
	}
	case LT_TITLE:
	if( useextlinuxmenu != 0 ){ // We just need useextlinuxmenu to not be zero (set above)
	char * templabel;
	int x = 0, y = 0;
	templabel = strdup(newKernelTitle);
	while( templabel[x]){
	if( templabel[x] == ' ' ){
	y = x;
	while( templabel[y] ){
	templabel[y] = templabel[y+1];
	y++;
	}
	}
	x++;
	}
	newLine = addLine(new, config->cfi, LT_TITLE,
	config->primaryIndent, templabel);
	free(templabel);
	}else{
	newLine = addLine(new, config->cfi, LT_TITLE,
	config->primaryIndent, newKernelTitle);
2976	}	}
	needs &= ~NEED_TITLE;
	break;
	default:
	abort();
2977	}	}
2978	}	}
	/* add the remainder of the lines, i.e. those that either
	* weren't present in the template, or in the case of no template,
	* all the lines following the entryStart.
	*/
	if (needs & NEED_TITLE) {
	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;
	}
2979
2980	if (needs) {	int isSuseSystem(void)
2981	printf(_("grubby: needs=%d, aborting\n"), needs);	{
2982	abort();	const char *path;
2983	}	const static char default_path[] = "/etc/SuSE-release";
2984
2985	if (updateImage(config, "0", prefix, newKernelArgs, NULL,	if ((path = getenv("GRUBBY_SUSE_RELEASE")) == NULL)
2986	newMBKernelArgs, NULL)) return 1;	path = default_path;
2987
2988	return 0;	if (!access(path, R_OK))
2989		return 1;
2990		return 0;
2991	}	}
2992
2993	static void traceback(int signum)	int isSuseGrubConf(const char *path)
2994	{	{
2995	void *array[40];	FILE *grubConf;
2996	size_t size;	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	signal(SIGSEGV, SIG_DFL);	while ((res = getline(&line, &len, grubConf)) != -1) {
3007	memset(array, '\0', sizeof (array));	if (!strncmp(line, "setup", 5)) {
3008	size = backtrace(array, 40);	fclose(grubConf);
3009		free(line);
3010	fprintf(stderr, "grubby recieved SIGSEGV!  Backtrace (%ld):\n",	return 1;
3011	(unsigned long)size);	}
	backtrace_symbols_fd(array, size, STDERR_FILENO);
	exit(1);
	}
	int main(int argc, const char ** argv) {
	poptContext optCon;
	const char * grubConfig = NULL;
	char * outputFile = NULL;
	int arg = 0;
	int flags = 0;
	int badImageOkay = 0;
	int configureGrub2 = 0;
	int configureLilo = 0, configureELilo = 0, configureGrub = 0;
	int configureYaboot = 0, configureSilo = 0, configureZipl = 0;
	int configureExtLinux = 0;
	int bootloaderProbe = 0;
	int extraInitrdCount = 0;
	char * updateKernelPath = NULL;
	char * newKernelPath = NULL;
	char * removeKernelPath = NULL;
	char * newKernelArgs = NULL;
	char * newKernelInitrd = NULL;
	char * newKernelTitle = NULL;
	char * newKernelVersion = NULL;
	char * newMBKernel = NULL;
	char * newMBKernelArgs = NULL;
	char * removeMBKernelArgs = NULL;
	char * removeMBKernel = NULL;
	char * bootPrefix = NULL;
	char * defaultKernel = NULL;
	char * removeArgs = NULL;
	char * kernelInfo = NULL;
	char * extraInitrds[MAX_EXTRA_INITRDS] = { NULL };
	const char * chptr = NULL;
	struct configFileInfo * cfi = NULL;
	struct grubConfig * config;
	struct singleEntry * template = NULL;
	int copyDefault = 0, makeDefault = 0;
	int displayDefault = 0;
	int displayDefaultIndex = 0;
	int displayDefaultTitle = 0;
	struct poptOption options[] = {
	{ "add-kernel", 0, POPT_ARG_STRING, &newKernelPath, 0,
	_("add an entry for the specified kernel"), _("kernel-path") },
	{ "add-multiboot", 0, POPT_ARG_STRING, &newMBKernel, 0,
	_("add an entry for the specified multiboot kernel"), NULL },
	{ "args", 0, POPT_ARG_STRING, &newKernelArgs, 0,
	_("default arguments for the new kernel or new arguments for "
	"kernel being updated"), _("args") },
	{ "mbargs", 0, POPT_ARG_STRING, &newMBKernelArgs, 0,
	_("default arguments for the new multiboot kernel or "
	"new arguments for multiboot kernel being updated"), NULL },
	{ "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") },
	#if defined(__i386__) || defined(__x86_64__)
	{ "bootloader-probe", 0, POPT_ARG_NONE, &bootloaderProbe, 0,
	_("check if lilo is installed on lilo.conf boot sector") },
	#endif
	{ "config-file", 'c', POPT_ARG_STRING, &grubConfig, 0,
	_("path to grub config file to update (\"-\" for stdin)"),
	_("path") },
	{ "copy-default", 0, 0, &copyDefault, 0,
	_("use the default boot entry as a template for the new entry "
	"being added; if the default is not a linux image, or if "
	"the kernel referenced by the default image does not exist, "
	"the first linux entry whose kernel does exist is used as the "
	"template"), NULL },
	{ "debug", 0, 0, &debug, 0,
	_("print debugging information for failures") },
	{ "default-kernel", 0, 0, &displayDefault, 0,
	_("display the path of the default kernel") },
	{ "default-index", 0, 0, &displayDefaultIndex, 0,
	_("display the index of the default kernel") },
	{ "default-title", 0, 0, &displayDefaultTitle, 0,
	_("display the title of the default kernel") },
	{ "elilo", 0, POPT_ARG_NONE, &configureELilo, 0,
	_("configure elilo bootloader") },
	{ "extlinux", 0, POPT_ARG_NONE, &configureExtLinux, 0,
	_("configure extlinux bootloader (from syslinux)") },
	{ "grub", 0, POPT_ARG_NONE, &configureGrub, 0,
	_("configure grub bootloader") },
	{ "grub2", 0, POPT_ARG_NONE, &configureGrub2, 0,
	_("configure grub2 bootloader") },
	{ "info", 0, POPT_ARG_STRING, &kernelInfo, 0,
	_("display boot information for specified kernel"),
	_("kernel-path") },
	{ "initrd", 0, POPT_ARG_STRING, &newKernelInitrd, 0,
	_("initrd image for the new kernel"), _("initrd-path") },
	{ "extra-initrd", 'i', POPT_ARG_STRING, NULL, 'i',
	_("auxilliary initrd image for things other than the new kernel"), _("initrd-path") },
	{ "lilo", 0, POPT_ARG_NONE, &configureLilo, 0,
	_("configure lilo bootloader") },
	{ "make-default", 0, 0, &makeDefault, 0,
	_("make the newly added entry the default boot entry"), NULL },
	{ "output-file", 'o', POPT_ARG_STRING, &outputFile, 0,
	_("path to output updated config file (\"-\" for stdout)"),
	_("path") },
	{ "remove-args", 0, POPT_ARG_STRING, &removeArgs, 0,
	_("remove kernel arguments"), NULL },
	{ "remove-mbargs", 0, POPT_ARG_STRING, &removeMBKernelArgs, 0,
	_("remove multiboot kernel arguments"), NULL },
	{ "remove-kernel", 0, POPT_ARG_STRING, &removeKernelPath, 0,
	_("remove all entries for the specified kernel"),
	_("kernel-path") },
	{ "remove-multiboot", 0, POPT_ARG_STRING, &removeMBKernel, 0,
	_("remove all entries for the specified multiboot kernel"), NULL },
	{ "set-default", 0, POPT_ARG_STRING, &defaultKernel, 0,
	_("make the first entry referencing the specified kernel "
	"the default"), _("kernel-path") },
	{ "silo", 0, POPT_ARG_NONE, &configureSilo, 0,
	_("configure silo bootloader") },
	{ "title", 0, POPT_ARG_STRING, &newKernelTitle, 0,
	_("title to use for the new kernel entry"), _("entry-title") },
	{ "update-kernel", 0, POPT_ARG_STRING, &updateKernelPath, 0,
	_("updated information for the specified kernel"),
	_("kernel-path") },
	{ "version", 'v', 0, NULL, 'v',
	_("print the version of this program and exit"), NULL },
	{ "yaboot", 0, POPT_ARG_NONE, &configureYaboot, 0,
	_("configure yaboot bootloader") },
	{ "zipl", 0, POPT_ARG_NONE, &configureZipl, 0,
	_("configure zipl bootloader") },
	POPT_AUTOHELP
	{ 0, 0, 0, 0, 0 }
	};
	useextlinuxmenu=0;
	signal(SIGSEGV, traceback);
	optCon = poptGetContext("grubby", argc, argv, options, 0);
	poptReadDefaultConfig(optCon, 1);
	while ((arg = poptGetNextOpt(optCon)) >= 0) {
	switch (arg) {
	case 'v':
	printf("grubby version %s\n", VERSION);
	exit(0);
	break;
	case 'i':
	if (extraInitrdCount < MAX_EXTRA_INITRDS) {
	extraInitrds[extraInitrdCount++] = strdup(poptGetOptArg(optCon));
	} else {
	fprintf(stderr, _("grubby: extra initrd maximum is %d\n"), extraInitrdCount);
	return 1;
	}
	break;
3012	}	}
	}
3013
3014	if (arg < -1) {	dbgPrintf("SuSE configuration file '%s' does not appear to be valid\n",
3015	fprintf(stderr, _("grubby: bad argument %s: %s\n"),	path);
	poptBadOption(optCon, POPT_BADOPTION_NOALIAS),
	poptStrerror(arg));
	return 1;
	}
3016
3017	if ((chptr = poptGetArg(optCon))) {	fclose(grubConf);
3018	fprintf(stderr, _("grubby: unexpected argument %s\n"), chptr);	free(line);
3019	return 1;	return 0;
3020	}	}
3021
3022	if ((configureLilo + configureGrub2 + configureGrub + configureELilo +	int suseGrubConfGetLba(const char *path, int *lbaPtr)
3023	configureYaboot + configureSilo + configureZipl +	{
3024	configureExtLinux ) > 1) {	FILE *grubConf;
3025	fprintf(stderr, _("grubby: cannot specify multiple bootloaders\n"));	char *line = NULL;
3026	return 1;	size_t res = 0, len = 0;
	} 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;
	}
3027
3028	if (!cfi) {	if (!path)
3029	if (grub2FindConfig(&grub2ConfigType))	return 1;
3030	cfi = &grub2ConfigType;	if (!lbaPtr)
3031	else	return 1;
	#ifdef __ia64__
	cfi = &eliloConfigType;
	#elif __powerpc__
	cfi = &yabootConfigType;
	#elif __sparc__
	cfi = &siloConfigType;
	#elif __s390__
	cfi = &ziplConfigType;
	#elif __s390x__
	cfi = &ziplConfigtype;
	#else
	cfi = &grubConfigType;
	#endif
	}
3032
3033	if (!grubConfig) {	grubConf = fopen(path, "r");
3034	if (cfi->findConfig)	if (!grubConf)
3035	grubConfig = cfi->findConfig(cfi);	return 1;
	if (!grubConfig)
	grubConfig = cfi->defaultConfig;
	}
3036
3037	if (bootloaderProbe && (displayDefault || kernelInfo || newKernelVersion ||	while ((res = getline(&line, &len, grubConf)) != -1) {
3038	newKernelPath || removeKernelPath || makeDefault ||	if (line[res - 1] == '\n')
3039	defaultKernel || displayDefaultIndex || displayDefaultTitle)) {	line[res - 1] = '\0';
3040	fprintf(stderr, _("grubby: --bootloader-probe may not be used with "	else if (len > res)
3041	"specified option"));	line[res] = '\0';
3042	return 1;	else {
3043	}	line = realloc(line, res + 1);
3044		line[res] = '\0';
3045		}
3046
3047	if ((displayDefault || kernelInfo) && (newKernelVersion || newKernelPath ||	if (!strncmp(line, "setup", 5)) {
3048	removeKernelPath)) {	if (strstr(line, "--force-lba")) {
3049	fprintf(stderr, _("grubby: --default-kernel and --info may not "	*lbaPtr = 1;
3050	"be used when adding or removing kernels\n"));	} else {
3051	return 1;	*lbaPtr = 0;
3052	}	}
3053		dbgPrintf("lba: %i\n", *lbaPtr);
3054		break;
3055		}
3056		}
3057
3058	if (newKernelPath && !newKernelTitle) {	free(line);
3059	fprintf(stderr, _("grubby: kernel title must be specified\n"));	fclose(grubConf);
3060	return 1;	return 0;
3061	} else if (!newKernelPath && (newKernelTitle  || copyDefault ||	}
	(newKernelInitrd && !updateKernelPath)||
	makeDefault || extraInitrdCount > 0)) {
	fprintf(stderr, _("grubby: kernel path expected\n"));
	return 1;
	}
3062
3063	if (newKernelPath && updateKernelPath) {	int suseGrubConfGetInstallDevice(const char *path, char **devicePtr)
3064	fprintf(stderr, _("grubby: --add-kernel and --update-kernel may"	{
3065	"not be used together"));	FILE *grubConf;
3066	return 1;	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	if (makeDefault && defaultKernel) {	if (!path)
3074	fprintf(stderr, _("grubby: --make-default and --default-kernel "	return 1;
3075	"may not be used together\n"));	if (!devicePtr)
3076	return 1;	return 1;
	} 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;
	}
3077
3078	if (grubConfig && !strcmp(grubConfig, "-") && !outputFile) {	grubConf = fopen(path, "r");
3079	fprintf(stderr, _("grubby: output file must be specified if stdin "	if (!grubConf)
3080	"is used\n"));	return 1;
	return 1;
	}
3081
3082	if (!removeKernelPath && !newKernelPath && !displayDefault && !defaultKernel	while ((res = getline(&line, &len, grubConf)) != -1) {
3083	&& !kernelInfo && !bootloaderProbe && !updateKernelPath	if (strncmp(line, "setup", 5))
3084	&& !removeMBKernel && !displayDefaultIndex && !displayDefaultTitle) {	continue;
3085	fprintf(stderr, _("grubby: no action specified\n"));
3086	return 1;	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	flags |= badImageOkay ? GRUBBY_BADIMAGE_OKAY : 0;	lastParamPtr = bounds = line + res;
3096
3097	if (cfi->needsBootPrefix) {	/* Last parameter in grub may be an optional IMAGE_DEVICE */
3098	if (!bootPrefix) {	while (!isspace(*lastParamPtr))
3099	bootPrefix = findBootPrefix();	lastParamPtr--;
3100	if (!bootPrefix) return 1;	lastParamPtr++;
3101	} else {
3102	/* this shouldn't end with a / */	secLastParamPtr = lastParamPtr - 2;
3103	if (bootPrefix[strlen(bootPrefix) - 1] == '/')	dbgPrintf("lastParamPtr: %s\n", lastParamPtr);
3104	bootPrefix[strlen(bootPrefix) - 1] = '\0';
3105	}	if (lastParamPtr + 3 > bounds) {
3106	} else {	dbgPrintf("lastParamPtr going over boundary");
3107	bootPrefix = "";	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		*devicePtr = malloc(6);
3139		snprintf(*devicePtr, 6, "(hd%c)", installDeviceNumber);
3140		dbgPrintf("installDeviceNumber: %c\n", installDeviceNumber);
3141		fclose(grubConf);
3142		free(line);
3143		return 0;
3144		}
3145
3146	if (!cfi->mbAllowExtraInitRds &&	free(line);
3147	extraInitrdCount > 0) {	fclose(grubConf);
	fprintf(stderr, _("grubby: %s doesn't allow multiple initrds\n"), cfi->defaultConfig);
3148	return 1;	return 1;
3149	}	}
3150
3151		int grubGetBootFromDeviceMap(const char *device, char **bootPtr)
3152		{
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 (!device)
3162		return 1;
3163		if (!bootPtr)
3164		return 1;
3165
3166	if (bootloaderProbe) {	if ((path = getenv("GRUBBY_GRUB_DEVICE_MAP")) == NULL)
3167	int lrc = 0, grc = 0, gr2c = 0, erc = 0;	path = default_path;
	struct grubConfig * lconfig, * gconfig;
	const char *grub2config = grub2FindConfig(&grub2ConfigType);
	if (grub2config) {
	gconfig = readConfig(grub2config, &grub2ConfigType);
	if (!gconfig)
	gr2c = 1;
	else
	gr2c = checkForGrub2(gconfig);
	}
	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(extlinuxConfigType.defaultConfig, F_OK)) {
	lconfig = readConfig(extlinuxConfigType.defaultConfig, &extlinuxConfigType);
	if (!lconfig)
	erc = 1;
	else
	erc = checkForExtLinux(lconfig);
	}
	if (lrc == 1 || grc == 1 || gr2c == 1) return 1;
	if (lrc == 2) printf("lilo\n");
	if (gr2c == 2) printf("grub2\n");
	if (grc == 2) printf("grub\n");
	if (erc == 2) printf("extlinux\n");
3168
3169		dbgPrintf("opening grub device.map file from: %s\n", path);
3170		deviceMap = fopen(path, "r");
3171		if (!deviceMap)
3172		return 1;
3173
3174		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		devicePtr = line;
3188		bounds = line + res;
3189
3190		while ((isspace(*line) && ((devicePtr + 1) <= bounds)))
3191		devicePtr++;
3192		dbgPrintf("device: %s\n", devicePtr);
3193
3194		if (!strncmp(devicePtr, device, strlen(device))) {
3195		devicePtr += strlen(device);
3196		while (isspace(*devicePtr)
3197		&& ((devicePtr + 1) <= bounds))
3198		devicePtr++;
3199
3200		*bootPtr = strdup(devicePtr);
3201		break;
3202		}
3203		}
3204
3205		free(line);
3206		fclose(deviceMap);
3207	return 0;	return 0;
3208	}	}
3209
3210		int suseGrubConfGetBoot(const char *path, char **bootPtr)
3211		{
3212		char *grubDevice;
3213
3214		if (suseGrubConfGetInstallDevice(path, &grubDevice))
3215		dbgPrintf("error looking for grub installation device\n");
3216		else
3217		dbgPrintf("grubby installation device: %s\n", grubDevice);
3218
3219	config = readConfig(grubConfig, cfi);	if (grubGetBootFromDeviceMap(grubDevice, bootPtr))
3220	if (!config) return 1;	dbgPrintf("error looking for grub boot device\n");
3221		else
3222		dbgPrintf("grubby boot device: %s\n", *bootPtr);
3223
3224		free(grubDevice);
3225		return 0;
3226		}
3227
3228		int parseSuseGrubConf(int *lbaPtr, char **bootPtr)
3229		{
3230		/*
3231		* This SuSE grub configuration file at this location is not your
3232		* average grub configuration file, but instead the grub commands
3233		* used to setup grub on that system.
3234		*/
3235		const char *path;
3236		const static char default_path[] = "/etc/grub.conf";
3237
3238		if ((path = getenv("GRUBBY_SUSE_GRUB_CONF")) == NULL)
3239		path = default_path;
3240
3241	if (displayDefault) {	if (!isSuseGrubConf(path))
3242	struct singleLine * line;	return 1;
3243	struct singleEntry * entry;
3244	char * rootspec;	if (lbaPtr) {
3245		*lbaPtr = 0;
3246	if (config->defaultImage == -1) return 0;	if (suseGrubConfGetLba(path, lbaPtr))
3247	entry = findEntryByIndex(config, config->defaultImage);	return 1;
3248	if (!entry) return 0;	}
3249	if (!suitableImage(entry, bootPrefix, 0, flags)) return 0;
3250		if (bootPtr) {
3251	line = getLineByType(LT_KERNEL|LT_HYPER, entry->lines);	*bootPtr = NULL;
3252	if (!line) return 0;	suseGrubConfGetBoot(path, bootPtr);
3253		}
	rootspec = getRootSpecifier(line->elements[1].item);
	printf("%s%s\n", bootPrefix, line->elements[1].item +
	((rootspec != NULL) ? strlen(rootspec) : 0));
3254
3255	return 0;	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	} else if (displayDefaultTitle) {	in = fopen("/etc/sysconfig/grub", "r");
3267	struct singleLine * line;	if (!in)
3268	struct singleEntry * entry;	return 1;
3269
3270	if (config->defaultImage == -1) return 0;	if (lbaPtr)
3271	entry = findEntryByIndex(config, config->defaultImage);	*lbaPtr = 0;
3272	if (!entry) return 0;	if (bootPtr)
3273		*bootPtr = NULL;
3274	if (!configureGrub2) {
3275	line = getLineByType(LT_TITLE, entry->lines);	while (fgets(buf, sizeof(buf), in)) {
3276	if (!line) return 0;	start = buf;
3277	printf("%s\n", line->elements[1].item);	while (isspace(*start))
3278		start++;
3279	} else {	if (*start == '#')
3280	char * title;	continue;
3281
3282	dbgPrintf("This is GRUB2, default title is embeded in menuentry\n");	chptr = strchr(start, '=');
3283	line = getLineByType(LT_MENUENTRY, entry->lines);	if (!chptr)
3284	if (!line) return 0;	continue;
3285	title = grub2ExtractTitle(line);	chptr--;
3286	if (title)	while (*chptr && isspace(*chptr))
3287	printf("%s\n", title);	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;	return 0;
3314		}
3315
3316	} else if (displayDefaultIndex) {	void dumpSysconfigGrub(void)
3317	if (config->defaultImage == -1) return 0;	{
3318	printf("%i\n", config->defaultImage);	char *boot = NULL;
3319		int lba;
	} else if (kernelInfo)
	return displayInfo(config, kernelInfo, bootPrefix);
	if (copyDefault) {
	template = findTemplate(config, bootPrefix, NULL, 0, flags);
	if (!template) return 1;
	}
3320
3321	markRemovedImage(config, removeKernelPath, bootPrefix);	if (isSuseSystem()) {
3322	markRemovedImage(config, removeMBKernel, bootPrefix);	if (parseSuseGrubConf(&lba, &boot)) {
3323	setDefaultImage(config, newKernelPath != NULL, defaultKernel, makeDefault,	free(boot);
3324	bootPrefix, flags);	return;
3325	setFallbackImage(config, newKernelPath != NULL);	}
3326	if (updateImage(config, updateKernelPath, bootPrefix, newKernelArgs,	} else {
3327	removeArgs, newMBKernelArgs, removeMBKernelArgs)) return 1;	if (parseSysconfigGrub(&lba, &boot)) {
3328	if (updateKernelPath && newKernelInitrd) {	free(boot);
3329	if (updateInitrd(config, updateKernelPath, bootPrefix,	return;
3330	newKernelInitrd)) return 1;	}
3331	}	}
3332	if (addNewKernel(config, template, bootPrefix, newKernelPath,
3333	newKernelTitle, newKernelArgs, newKernelInitrd,	if (lba)
3334	extraInitrds, extraInitrdCount,	printf("lba\n");
3335	newMBKernel, newMBKernelArgs)) return 1;	if (boot) {
3336		printf("boot=%s\n", boot);
3337		free(boot);
3338	if (numEntries(config) == 0) {	}
3339	fprintf(stderr, _("grubby: doing this would leave no kernel entries. "	}
3340	"Not writing out new config.\n"));
3341	return 1;	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 (read(fd, bootSect, 512) != 512) {
4401		fprintf(stderr, _("grubby: unable to read %s: %s\n"),
4402		"/boot/grub/stage1", strerror(errno));
4403		close(fd);
4404		return 1;
4405		}
4406		close(fd);
4407
4408		/* The more elaborate checks do not work on SuSE. The checks done
4409		* seem to be reasonble (at least for now), so just return success
4410		*/
4411		if (onSuse)
4412		return 2;
4413
4414		return checkDeviceBootloader(boot, bootSect);
4415		}
4416
4417		int checkForExtLinux(struct grubConfig *config)
4418		{
4419		int fd;
4420		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		return rs + subvolPrefix(str + rs);
4487		}
4488
4489		static char *getInitrdVal(struct grubConfig *config,
4490		const char *prefix, struct singleLine *tmplLine,
4491		const char *newKernelInitrd,
4492		const char **extraInitrds, int extraInitrdCount)
4493		{
4494		char *initrdVal, *end;
4495		int i;
4496		size_t totalSize;
4497		size_t prefixLen;
4498		char separatorChar;
4499
4500		prefixLen = strlen(prefix);
4501		totalSize = strlen(newKernelInitrd) - prefixLen + 1 /* \0 */ ;
4502
4503		for (i = 0; i < extraInitrdCount; i++) {
4504		totalSize += sizeof(separatorChar);
4505		totalSize += strlen(extraInitrds[i]) - prefixLen;
4506		}
4507
4508		initrdVal = end = malloc(totalSize);
4509
4510		end = stpcpy(end, newKernelInitrd + prefixLen);
4511
4512		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		} 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		}
4906		}
4907
4908		} else {
4909		/* 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		struct singleLine *endLine = NULL;
4985		endLine = getLineByType(LT_ENTRY_END, new->lines);
4986		if (endLine) {
4987		removeLine(new, endLine);
4988		needs |= NEED_END;
4989		}
4990
4991		/* add the remainder of the lines, i.e. those that either
4992		* weren't present in the template, or in the case of no template,
4993		* 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 (needs) {
5053		printf(_("grubby: needs=%d, aborting\n"), needs);
5054		abort();
5055		}
5056
5057		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		int main(int argc, const char **argv)
5067		{
5068		poptContext optCon;
5069		const char *grubConfig = NULL;
5070		char *outputFile = NULL;
5071		int arg = 0;
5072		int flags = 0;
5073		int badImageOkay = 0;
5074		int configureGrub2 = 0;
5075		int configureLilo = 0, configureELilo = 0, configureGrub = 0;
5076		int configureYaboot = 0, configureSilo = 0, configureZipl = 0;
5077		int configureExtLinux = 0;
5078		int bootloaderProbe = 0;
5079		int extraInitrdCount = 0;
5080		char *updateKernelPath = NULL;
5081		char *newKernelPath = NULL;
5082		char *removeKernelPath = NULL;
5083		char *newKernelArgs = NULL;
5084		char *newKernelInitrd = NULL;
5085		char *newKernelTitle = NULL;
5086		char *newDevTreePath = NULL;
5087		char *newMBKernel = NULL;
5088		char *newMBKernelArgs = NULL;
5089		int newIndex = 0;
5090		char *removeMBKernelArgs = NULL;
5091		char *removeMBKernel = NULL;
5092		char *bootPrefix = NULL;
5093		char *defaultKernel = NULL;
5094		char *removeArgs = NULL;
5095		char *kernelInfo = NULL;
5096		char *extraInitrds[MAX_EXTRA_INITRDS] = { NULL };
5097		char *envPath = NULL;
5098		const char *chptr = NULL;
5099		struct configFileInfo *cfi = NULL;
5100		struct grubConfig *config;
5101		struct singleEntry *template = NULL;
5102		int copyDefault = 0, makeDefault = 0;
5103		int displayDefault = 0;
5104		int displayDefaultIndex = 0;
5105		int displayDefaultTitle = 0;
5106		int defaultIndex = -1;
5107		struct poptOption options[] = {
5108		{"add-kernel", 0, POPT_ARG_STRING, &newKernelPath, 0,
5109		_("add an entry for the specified kernel"), _("kernel-path")},
5110		{"add-multiboot", 0, POPT_ARG_STRING, &newMBKernel, 0,
5111		_("add an entry for the specified multiboot kernel"), NULL},
5112		{"args", 0, POPT_ARG_STRING, &newKernelArgs, 0,
5113		_("default arguments for the new kernel or new arguments for "
5114		"kernel being updated"), _("args")},
5115		{"mbargs", 0, POPT_ARG_STRING, &newMBKernelArgs, 0,
5116		_("default arguments for the new multiboot kernel or "
5117		"new arguments for multiboot kernel being updated"), NULL},
5118		{"mounts", 0, POPT_ARG_STRING, &mounts, 0,
5119		_("path to fake /proc/mounts file (for testing only)"),
5120		_("mounts")},
5121		{"bad-image-okay", 0, 0, &badImageOkay, 0,
5122		_
5123		("don't sanity check images in boot entries (for testing only)"),
5124		NULL},
5125		{"boot-filesystem", 0, POPT_ARG_STRING, &bootPrefix, 0,
5126		_
5127		("filesystem which contains /boot directory (for testing only)"),
5128		_("bootfs")},
5129		#if defined(__i386__) || defined(__x86_64__) || defined (__powerpc64__) || defined (__ia64__)
5130		{"bootloader-probe", 0, POPT_ARG_NONE, &bootloaderProbe, 0,
5131		_("check which bootloader is installed on boot sector")},
5132		#endif
5133		{"config-file", 'c', POPT_ARG_STRING, &grubConfig, 0,
5134		_("path to grub config file to update (\"-\" for stdin)"),
5135		_("path")},
5136		{"copy-default", 0, 0, &copyDefault, 0,
5137		_("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 "
5139		"the kernel referenced by the default image does not exist, "
5140		"the first linux entry whose kernel does exist is used as the "
5141		"template"), NULL},
5142		{"debug", 0, 0, &debug, 0,
5143		_("print debugging information for failures")},
5144		{"default-kernel", 0, 0, &displayDefault, 0,
5145		_("display the path of the default kernel")},
5146		{"default-index", 0, 0, &displayDefaultIndex, 0,
5147		_("display the index of the default kernel")},
5148		{"default-title", 0, 0, &displayDefaultTitle, 0,
5149		_("display the title of the default kernel")},
5150		{"devtree", 0, POPT_ARG_STRING, &newDevTreePath, 0,
5151		_("device tree file for new stanza"), _("dtb-path")},
5152		{"devtreedir", 0, POPT_ARG_STRING, &newDevTreePath, 0,
5153		_("device tree directory for new stanza"), _("dtb-path")},
5154		{"elilo", 0, POPT_ARG_NONE, &configureELilo, 0,
5155		_("configure elilo bootloader")},
5156		{"efi", 0, POPT_ARG_NONE, &isEfi, 0,
5157		_("force grub2 stanzas to use efi")},
5158		{"env", 0, POPT_ARG_STRING, &envPath, 0,
5159		_("path for environment data"),
5160		_("path")},
5161		{"extlinux", 0, POPT_ARG_NONE, &configureExtLinux, 0,
5162		_("configure extlinux bootloader (from syslinux)")},
5163		{"grub", 0, POPT_ARG_NONE, &configureGrub, 0,
5164		_("configure grub bootloader")},
5165		{"grub2", 0, POPT_ARG_NONE, &configureGrub2, 0,
5166		_("configure grub2 bootloader")},
5167		{"info", 0, POPT_ARG_STRING, &kernelInfo, 0,
5168		_("display boot information for specified kernel"),
5169		_("kernel-path")},
5170		{"initrd", 0, POPT_ARG_STRING, &newKernelInitrd, 0,
5171		_("initrd image for the new kernel"), _("initrd-path")},
5172		{"extra-initrd", 'i', POPT_ARG_STRING, NULL, 'i',
5173		_
5174		("auxiliary initrd image for things other than the new kernel"),
5175		_("initrd-path")},
5176		{"lilo", 0, POPT_ARG_NONE, &configureLilo, 0,
5177		_("configure lilo bootloader")},
5178		{"make-default", 0, 0, &makeDefault, 0,
5179		_("make the newly added entry the default boot entry"), NULL},
5180		{"output-file", 'o', POPT_ARG_STRING, &outputFile, 0,
5181		_("path to output updated config file (\"-\" for stdout)"),
5182		_("path")},
5183		{"remove-args", 0, POPT_ARG_STRING, &removeArgs, 0,
5184		_("remove kernel arguments"), NULL},
5185		{"remove-mbargs", 0, POPT_ARG_STRING, &removeMBKernelArgs, 0,
5186		_("remove multiboot kernel arguments"), NULL},
5187		{"remove-kernel", 0, POPT_ARG_STRING, &removeKernelPath, 0,
5188		_("remove all entries for the specified kernel"),
5189		_("kernel-path")},
5190		{"remove-multiboot", 0, POPT_ARG_STRING, &removeMBKernel, 0,
5191		_("remove all entries for the specified multiboot kernel"),
5192		NULL},
5193		{"set-default", 0, POPT_ARG_STRING, &defaultKernel, 0,
5194		_("make the first entry referencing the specified kernel "
5195		"the default"), _("kernel-path")},
5196		{"set-default-index", 0, POPT_ARG_INT, &defaultIndex, 0,
5197		_("make the given entry index the default entry"),
5198		_("entry-index")},
5199		{"set-index", 0, POPT_ARG_INT, &newIndex, 0,
5200		_("use the given index when creating a new entry"),
5201		_("entry-index")},
5202		{"silo", 0, POPT_ARG_NONE, &configureSilo, 0,
5203		_("configure silo bootloader")},
5204		{"title", 0, POPT_ARG_STRING, &newKernelTitle, 0,
5205		_("title to use for the new kernel entry"), _("entry-title")},
5206		{"update-kernel", 0, POPT_ARG_STRING, &updateKernelPath, 0,
5207		_("updated information for the specified kernel"),
5208		_("kernel-path")},
5209		{"version", 'v', 0, NULL, 'v',
5210		_("print the version of this program and exit"), NULL},
5211		{"yaboot", 0, POPT_ARG_NONE, &configureYaboot, 0,
5212		_("configure yaboot bootloader")},
5213		{"zipl", 0, POPT_ARG_NONE, &configureZipl, 0,
5214		_("configure zipl bootloader")},
5215		POPT_AUTOHELP {0, 0, 0, 0, 0}
5216		};
5217
5218		useextlinuxmenu = 0;
5219
5220		int i = 0;
5221		for (int j = 1; j < argc; j++)
5222		i += strlen(argv[j]) + 1;
5223
5224		if (i > 0) {
5225		saved_command_line = malloc(i);
5226		if (!saved_command_line) {
5227		fprintf(stderr, "grubby: %m\n");
5228		exit(1);
5229		}
5230
5231		saved_command_line[0] = '\0';
5232		int cmdline_len = 0, arg_len;
5233		for (int j = 1; j < argc; j++) {
5234		arg_len = strlen(argv[j]);
5235		memcpy(saved_command_line + cmdline_len, argv[j], arg_len);
5236		cmdline_len += arg_len;
5237		if (j != argc - 1) {
5238		memcpy(saved_command_line + cmdline_len, " ", 1);
5239		cmdline_len++;
5240		}
5241		}
5242		saved_command_line[cmdline_len] = '\0';
5243		}
5244
5245		optCon = poptGetContext("grubby", argc, argv, options, 0);
5246		poptReadDefaultConfig(optCon, 1);
5247
5248		while ((arg = poptGetNextOpt(optCon)) >= 0) {
5249		switch (arg) {
5250		case 'v':
5251		printf("grubby version %s\n", VERSION);
5252		exit(0);
5253		break;
5254		case 'i':
5255		if (extraInitrdCount < MAX_EXTRA_INITRDS) {
5256		extraInitrds[extraInitrdCount++] =
5257		strdup(poptGetOptArg(optCon));
5258		} else {
5259		fprintf(stderr,
5260		_
5261		("grubby: extra initrd maximum is %d\n"),
5262		extraInitrdCount);
5263		return 1;
5264		}
5265		break;
5266		}
5267		}
5268
5269		if (arg < -1) {
5270		fprintf(stderr, _("grubby: bad argument %s: %s\n"),
5271		poptBadOption(optCon, POPT_BADOPTION_NOALIAS),
5272		poptStrerror(arg));
5273		return 1;
5274		}
5275
5276		if ((chptr = poptGetArg(optCon))) {
5277		fprintf(stderr, _("grubby: unexpected argument %s\n"), chptr);
5278		return 1;
5279		}
5280
5281		if ((configureLilo + configureGrub2 + configureGrub + configureELilo +
5282		configureYaboot + configureSilo + configureZipl +
5283		configureExtLinux) > 1) {
5284		fprintf(stderr,
5285		_("grubby: cannot specify multiple bootloaders\n"));
5286		return 1;
5287		} else if (bootloaderProbe && grubConfig) {
5288		fprintf(stderr,
5289		_
5290		("grubby: cannot specify config file with --bootloader-probe\n"));
5291		return 1;
5292		} else if (configureGrub2) {
5293		cfi = &grub2ConfigType;
5294		if (envPath)
5295		cfi->envFile = envPath;
5296		} else if (configureLilo) {
5297		cfi = &liloConfigType;
5298		} else if (configureGrub) {
5299		cfi = &grubConfigType;
5300		} else if (configureELilo) {
5301		cfi = &eliloConfigType;
5302		} else if (configureYaboot) {
5303		cfi = &yabootConfigType;
5304		} else if (configureSilo) {
5305		cfi = &siloConfigType;
5306		} else if (configureZipl) {
5307		cfi = &ziplConfigType;
5308		} else if (configureExtLinux) {
5309		cfi = &extlinuxConfigType;
5310		useextlinuxmenu = 1;
5311		}
5312
5313		if (!cfi) {
5314		if (grub2FindConfig(&grub2ConfigType)) {
5315		cfi = &grub2ConfigType;
5316		configureGrub2 = 1;
5317		if (envPath)
5318		cfi->envFile = envPath;
5319		} else {
5320		#ifdef __ia64__
5321		cfi = &eliloConfigType;
5322		configureLilo = 1;
5323		#elif defined(__powerpc__)
5324		cfi = &yabootConfigType;
5325		configureYaboot = 1;
5326		#elif defined(__sparc__)
5327		cfi = &siloConfigType;
5328		configureSilo = 1;
5329		#elif defined(__s390__) || defined(__s390x__)
5330		cfi = &ziplConfigType;
5331		configureZipl = 1;
5332		#else
5333		cfi = &grubConfigType;
5334		configureGrub = 1;
5335		#endif
5336		}
5337		}
5338
5339		if (!grubConfig) {
5340		if (cfi->findConfig)
5341		grubConfig = cfi->findConfig(cfi);
5342		if (!grubConfig)
5343		grubConfig = cfi->defaultConfig;
5344		}
5345
5346		if (bootloaderProbe && (displayDefault || kernelInfo ||
5347		newKernelPath || removeKernelPath || makeDefault
5348		|| defaultKernel || displayDefaultIndex
5349		|| displayDefaultTitle
5350		|| (defaultIndex >= 0))) {
5351		fprintf(stderr,
5352		_("grubby: --bootloader-probe may not be used with "
5353		"specified option"));
5354		return 1;
5355		}
5356
5357		if ((displayDefault || kernelInfo) && (newKernelPath ||
5358		removeKernelPath)) {
5359		fprintf(stderr, _("grubby: --default-kernel and --info may not "
5360		"be used when adding or removing kernels\n"));
5361		return 1;
5362		}
5363
5364		if (newKernelPath && !newKernelTitle) {
5365		fprintf(stderr, _("grubby: kernel title must be specified\n"));
5366		return 1;
5367		} else if (!newKernelPath && (copyDefault ||
5368		(newKernelInitrd && !updateKernelPath) ||
5369		makeDefault || extraInitrdCount > 0)) {
5370		fprintf(stderr, _("grubby: kernel path expected\n"));
5371		return 1;
5372		}
5373
5374		if (newKernelPath && updateKernelPath) {
5375		fprintf(stderr, _("grubby: --add-kernel and --update-kernel may"
5376		"not be used together"));
5377		return 1;
5378		}
5379
5380		if (makeDefault && defaultKernel) {
5381		fprintf(stderr, _("grubby: --make-default and --default-kernel "
5382		"may not be used together\n"));
5383		return 1;
5384		} else if (defaultKernel && removeKernelPath &&
5385		!strcmp(defaultKernel, removeKernelPath)) {
5386		fprintf(stderr,
5387		_("grubby: cannot make removed kernel the default\n"));
5388		return 1;
5389		} else if (defaultKernel && newKernelPath &&
5390		!strcmp(defaultKernel, newKernelPath)) {
5391		makeDefault = 1;
5392		defaultKernel = NULL;
5393		} else if (defaultKernel && (defaultIndex >= 0)) {
5394		fprintf(stderr,
5395		_("grubby: --set-default and --set-default-index "
5396		"may not be used together\n"));
5397		return 1;
5398		}
5399
5400		if (grubConfig && !strcmp(grubConfig, "-") && !outputFile) {
5401		fprintf(stderr,
5402		_("grubby: output file must be specified if stdin "
5403		"is used\n"));
5404		return 1;
5405		}
5406
5407		if (!removeKernelPath && !newKernelPath && !displayDefault
5408		&& !defaultKernel && !kernelInfo && !bootloaderProbe
5409		&& !updateKernelPath && !removeMBKernel && !displayDefaultIndex
5410		&& !displayDefaultTitle && (defaultIndex == -1)) {
5411		fprintf(stderr, _("grubby: no action specified\n"));
5412		return 1;
5413		}
5414
5415		flags |= badImageOkay ? GRUBBY_BADIMAGE_OKAY : 0;
5416
5417		if (cfi->needsBootPrefix) {
5418		if (!bootPrefix) {
5419		bootPrefix = findBootPrefix();
5420		if (!bootPrefix)
5421		return 1;
5422		} else {
5423		/* this shouldn't end with a / */
5424		if (bootPrefix[strlen(bootPrefix) - 1] == '/')
5425		bootPrefix[strlen(bootPrefix) - 1] = '\0';
5426		}
5427		} else {
5428		bootPrefix = "";
5429		}
5430
5431		if (!cfi->mbAllowExtraInitRds && extraInitrdCount > 0) {
5432		fprintf(stderr,
5433		_("grubby: %s doesn't allow multiple initrds\n"),
5434		cfi->defaultConfig);
5435		return 1;
5436		}
5437
5438		if (bootloaderProbe) {
5439		int lrc = 0, grc = 0, gr2c = 0, extrc = 0, yrc = 0, erc = 0;
5440		struct grubConfig *lconfig, *gconfig, *yconfig, *econfig;
5441
5442		const char *grub2config = grub2FindConfig(&grub2ConfigType);
5443		if (grub2config) {
5444		gconfig = readConfig(grub2config, &grub2ConfigType);
5445		if (!gconfig)
5446		gr2c = 1;
5447		else
5448		gr2c = checkForGrub2(gconfig);
5449		}
5450
5451		const char *grubconfig = grubFindConfig(&grubConfigType);
5452		if (!access(grubconfig, F_OK)) {
5453		gconfig = readConfig(grubconfig, &grubConfigType);
5454		if (!gconfig)
5455		grc = 1;
5456		else
5457		grc = checkForGrub(gconfig);
5458		}
5459
5460		if (!access(liloConfigType.defaultConfig, F_OK)) {
5461		lconfig =
5462		readConfig(liloConfigType.defaultConfig,
5463		&liloConfigType);
5464		if (!lconfig)
5465		lrc = 1;
5466		else
5467		lrc = checkForLilo(lconfig);
5468		}
5469
5470		if (!access(eliloConfigType.defaultConfig, F_OK)) {
5471		econfig = readConfig(eliloConfigType.defaultConfig,
5472		&eliloConfigType);
5473		if (!econfig)
5474		erc = 1;
5475		else
5476		erc = checkForElilo(econfig);
5477		}
5478
5479		if (!access(extlinuxConfigType.defaultConfig, F_OK)) {
5480		lconfig =
5481		readConfig(extlinuxConfigType.defaultConfig,
5482		&extlinuxConfigType);
5483		if (!lconfig)
5484		extrc = 1;
5485		else
5486		extrc = checkForExtLinux(lconfig);
5487		}
5488
5489		if (!access(yabootConfigType.defaultConfig, F_OK)) {
5490		yconfig = readConfig(yabootConfigType.defaultConfig,
5491		&yabootConfigType);
5492		if (!yconfig)
5493		yrc = 1;
5494		else
5495		yrc = checkForYaboot(yconfig);
5496		}
5497
5498		if (lrc == 1 || grc == 1 || gr2c == 1 || extrc == 1 || yrc == 1
5499		|| erc == 1)
5500		return 1;
5501
5502		if (lrc == 2)
5503		printf("lilo\n");
5504		if (gr2c == 2)
5505		printf("grub2\n");
5506		if (grc == 2)
5507		printf("grub\n");
5508		if (extrc == 2)
5509		printf("extlinux\n");
5510		if (yrc == 2)
5511		printf("yaboot\n");
5512		if (erc == 2)
5513		printf("elilo\n");
5514
5515		return 0;
5516		}
5517
5518		if (grubConfig == NULL) {
5519		printf("Could not find bootloader configuration file.\n");
5520		exit(1);
5521		}
5522
5523		config = readConfig(grubConfig, cfi);
5524		if (!config)
5525		return 1;
5526
5527		if (displayDefault) {
5528		struct singleLine *line;
5529		struct singleEntry *entry;
5530		size_t rs;
5531
5532		if (config->defaultImage == NO_DEFAULT_ENTRY)
5533		return 0;
5534		if (config->defaultImage == DEFAULT_SAVED_GRUB2 &&
5535		cfi->defaultIsSaved)
5536		config->defaultImage = FIRST_ENTRY_INDEX;
5537		entry = findEntryByIndex(config, config->defaultImage);
5538		if (!entry)
5539		return 0;
5540
5541		/* check if is a suitable image but still print it */
5542		suitableImage(entry, bootPrefix, 0, flags);
5543
5544		line =
5545		getLineByType(LT_KERNEL | LT_HYPER | LT_KERNEL_EFI |
5546		LT_KERNEL_16, entry->lines);
5547		if (!line)
5548		return 0;
5549
5550		rs = getRootSpecifier(line->elements[1].item);
5551		printf("%s%s\n", bootPrefix, line->elements[1].item + rs);
5552
5553		return 0;
5554
5555		} else if (displayDefaultTitle) {
5556		struct singleLine *line;
5557		struct singleEntry *entry;
5558
5559		if (config->defaultImage == NO_DEFAULT_ENTRY)
5560		return 0;
5561		if (config->defaultImage == DEFAULT_SAVED_GRUB2 &&
5562		cfi->defaultIsSaved)
5563		config->defaultImage = FIRST_ENTRY_INDEX;
5564		entry = findEntryByIndex(config, config->defaultImage);
5565		if (!entry)
5566		return 0;
5567
5568		if (!configureGrub2) {
5569		char *title;
5570		line = getLineByType(LT_TITLE, entry->lines);
5571		if (!line)
5572		return 0;
5573		title = extractTitle(config, line);
5574		if (!title)
5575		return 0;
5576		printf("%s\n", title);
5577		free(title);
5578		} else {
5579		char *title;
5580
5581		dbgPrintf
5582		("This is GRUB2, default title is embeded in menuentry\n");
5583		line = getLineByType(LT_MENUENTRY, entry->lines);
5584		if (!line)
5585		return 0;
5586		title = grub2ExtractTitle(line);
5587		if (title)
5588		printf("%s\n", title);
5589		}
5590		return 0;
5591
5592		} else if (displayDefaultIndex) {
5593		if (config->defaultImage == NO_DEFAULT_ENTRY)
5594		return 0;
5595		if (config->defaultImage == DEFAULT_SAVED_GRUB2 &&
5596		cfi->defaultIsSaved)
5597		config->defaultImage = FIRST_ENTRY_INDEX;
5598		printf("%i\n", config->defaultImage);
5599		return 0;
5600
5601		} else if (kernelInfo)
5602		return displayInfo(config, kernelInfo, bootPrefix);
5603
5604		if (copyDefault) {
5605		template = findTemplate(config, bootPrefix, NULL, 0, flags);
5606		if (!template)
5607		return 1;
5608		}
5609
5610		markRemovedImage(config, removeKernelPath, bootPrefix);
5611		markRemovedImage(config, removeMBKernel, bootPrefix);
5612		setDefaultImage(config, newKernelPath != NULL, defaultKernel,
5613		makeDefault, bootPrefix, flags, defaultIndex,
5614		newIndex);
5615		setFallbackImage(config, newKernelPath != NULL);
5616		if (updateImage(config, updateKernelPath, bootPrefix, newKernelArgs,
5617		removeArgs, newMBKernelArgs, removeMBKernelArgs))
5618		return 1;
5619		if (updateKernelPath && newKernelInitrd) {
5620		if (newMBKernel) {
5621		if (addMBInitrd(config, newMBKernel, updateKernelPath,
5622		bootPrefix, newKernelInitrd,
5623		newKernelTitle))
5624		return 1;
5625		} else {
5626		if (updateInitrd(config, updateKernelPath, bootPrefix,
5627		newKernelInitrd, newKernelTitle))
5628		return 1;
5629		}
5630		}
5631		if (addNewKernel(config, template, bootPrefix, newKernelPath,
5632		newKernelTitle, newKernelArgs, newKernelInitrd,
5633		(const char **)extraInitrds, extraInitrdCount,
5634		newMBKernel, newMBKernelArgs, newDevTreePath,
5635		newIndex))
5636		return 1;
5637
5638		if (numEntries(config) == 0) {
5639		fprintf(stderr,
5640		_("grubby: doing this would leave no kernel entries. "
5641		"Not writing out new config.\n"));
5642		return 1;
5643		}
5644
5645	if (!outputFile)	if (!outputFile)
5646	outputFile = (char *)grubConfig;	outputFile = (char *)grubConfig;
5647
5648	return writeConfig(config, outputFile, bootPrefix);	return writeConfig(config, outputFile, bootPrefix);
5649	}	}

---

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Legend: Removed from v.1841   changed lines   Added in v.3153