Diff of /trunk/grubby/grubby.c

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	trunk/mkinitrd-magellan/grubby/grubby.c revision 926 by niro, Wed Oct 28 13:29:38 2009 UTC	trunk/grubby/grubby.c revision 3031 by niro, Tue Jun 27 14:48:09 2017 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
42	#define DEBUG 0	#define DEBUG 0
43		#endif
44
45	#if DEBUG	#if DEBUG
46	#define dbgPrintf(format, args...) fprintf(stderr, format , ## args)	#define dbgPrintf(format, args...) fprintf(stderr, format , ## args)
#	Line 44	Line 48
48	#define dbgPrintf(format, args...)	#define dbgPrintf(format, args...)
49	#endif	#endif
50
51		int debug = 0; /* Currently just for template debugging */
52
53	#define _(A) (A)	#define _(A) (A)
54
55	#define MAX_EXTRA_INITRDS  16 /* code segment checked by --bootloader-probe */	#define MAX_EXTRA_INITRDS  16 /* code segment checked by --bootloader-probe */
56	#define CODE_SEG_SIZE  128 /* code segment checked by --bootloader-probe */	#define CODE_SEG_SIZE  128 /* code segment checked by --bootloader-probe */
57
58		#define NOOP_OPCODE 0x90
59		#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	/* comments get lumped in with indention */	/* comments get lumped in with indention */
72	struct lineElement {	struct lineElement {
73	char * item;	char *item;
74	char * indent;	char *indent;
75	};	};
76
77	enum lineType_e {	enum lineType_e {
78	LT_WHITESPACE = 1 << 0,	LT_UNIDENTIFIED = 0,
79	LT_TITLE      = 1 << 1,	LT_WHITESPACE = 1 << 0,
80	LT_KERNEL     = 1 << 2,	LT_TITLE = 1 << 1,
81	LT_INITRD     = 1 << 3,	LT_KERNEL = 1 << 2,
82	LT_HYPER      = 1 << 4,	LT_INITRD = 1 << 3,
83	LT_DEFAULT    = 1 << 5,	LT_HYPER = 1 << 4,
84	LT_MBMODULE   = 1 << 6,	LT_DEFAULT = 1 << 5,
85	LT_ROOT       = 1 << 7,	LT_MBMODULE = 1 << 6,
86	LT_FALLBACK   = 1 << 8,	LT_ROOT = 1 << 7,
87	LT_KERNELARGS = 1 << 9,	LT_FALLBACK = 1 << 8,
88	LT_BOOT       = 1 << 10,	LT_KERNELARGS = 1 << 9,
89	LT_BOOTROOT   = 1 << 11,	LT_BOOT = 1 << 10,
90	LT_LBA        = 1 << 12,	LT_BOOTROOT = 1 << 11,
91	LT_OTHER      = 1 << 13,	LT_LBA = 1 << 12,
92	LT_GENERIC    = 1 << 14,	LT_OTHER = 1 << 13,
93	LT_UNKNOWN    = 1 << 15,	LT_GENERIC = 1 << 14,
94		LT_ECHO = 1 << 16,
95		LT_MENUENTRY = 1 << 17,
96		LT_ENTRY_END = 1 << 18,
97		LT_SET_VARIABLE = 1 << 19,
98		LT_KERNEL_EFI = 1 << 20,
99		LT_INITRD_EFI = 1 << 21,
100		LT_KERNEL_16 = 1 << 22,
101		LT_INITRD_16 = 1 << 23,
102		LT_DEVTREE = 1 << 24,
103		LT_UNKNOWN = 1 << 25,
104	};	};
105
106	struct singleLine {	struct singleLine {
107	char * indent;	char *indent;
108	int numElements;	int numElements;
109	struct lineElement * elements;	struct lineElement *elements;
110	struct singleLine * next;	struct singleLine *next;
111	enum lineType_e type;	enum lineType_e type;
112	};	};
113
114	struct singleEntry {	struct singleEntry {
115	struct singleLine * lines;	struct singleLine *lines;
116	int skip;	int skip;
117	int multiboot;	int multiboot;
118	struct singleEntry * next;	struct singleEntry *next;
119	};	};
120
121	#define GRUBBY_BADIMAGE_OKAY (1 << 0)	#define GRUBBY_BADIMAGE_OKAY (1 << 0)
#	Line 99  struct singleEntry {	Line 128  struct singleEntry {
128	#define NEED_TITLE   (1 << 2)	#define NEED_TITLE   (1 << 2)
129	#define NEED_ARGS    (1 << 3)	#define NEED_ARGS    (1 << 3)
130	#define NEED_MB      (1 << 4)	#define NEED_MB      (1 << 4)
131		#define NEED_END     (1 << 5)
132		#define NEED_DEVTREE (1 << 6)
133
134	#define MAIN_DEFAULT    (1 << 0)	#define MAIN_DEFAULT    (1 << 0)
135		#define FIRST_ENTRY_INDEX    0 /* boot entry index value begin and increment
136		from this initial value */
137		#define NO_DEFAULT_ENTRY    -1 /* indicates that no specific default boot
138		entry was set or currently exists */
139	#define DEFAULT_SAVED       -2	#define DEFAULT_SAVED       -2
140		#define DEFAULT_SAVED_GRUB2 -3
141
142	struct keywordTypes {	struct keywordTypes {
143	char * key;	char *key;
144	enum lineType_e type;	enum lineType_e type;
145	char nextChar;	char nextChar;
146	char separatorChar;	char separatorChar;
147	};	};
148
149		struct configFileInfo;
150
151		typedef const char *(*findConfigFunc) (struct configFileInfo *);
152		typedef const int (*writeLineFunc) (struct configFileInfo *,
153		struct singleLine * line);
154		typedef char *(*getEnvFunc) (struct configFileInfo *, char *name);
155		typedef int (*setEnvFunc) (struct configFileInfo *, char *name, char *value);
156
157	struct configFileInfo {	struct configFileInfo {
158	char * defaultConfig;	char *defaultConfig;
159	struct keywordTypes * keywords;	findConfigFunc findConfig;
160	int defaultIsIndex;	writeLineFunc writeLine;
161	int defaultSupportSaved;	getEnvFunc getEnv;
162	enum lineType_e entrySeparator;	setEnvFunc setEnv;
163	int needsBootPrefix;	struct keywordTypes *keywords;
164	int argsInQuotes;	int caseInsensitive;
165	int maxTitleLength;	int defaultIsIndex;
166	int titleBracketed;	int defaultIsVariable;
167	int mbHyperFirst;	int defaultSupportSaved;
168	int mbInitRdIsModule;	int defaultIsSaved;
169	int mbConcatArgs;	int defaultIsUnquoted;
170	int mbAllowExtraInitRds;	enum lineType_e entryStart;
171		enum lineType_e entryEnd;
172		int needsBootPrefix;
173		int argsInQuotes;
174		int maxTitleLength;
175		int titleBracketed;
176		int titlePosition;
177		int mbHyperFirst;
178		int mbInitRdIsModule;
179		int mbConcatArgs;
180		int mbAllowExtraInitRds;
181		char *envFile;
182	};	};
183
184	struct keywordTypes grubKeywords[] = {	struct keywordTypes grubKeywords[] = {
185	{ "title",    LT_TITLE,    ' ' },	{"title", LT_TITLE, ' '},
186	{ "root",    LT_BOOTROOT,    ' ' },	{"root", LT_BOOTROOT, ' '},
187	{ "default",    LT_DEFAULT,    ' ' },	{"default", LT_DEFAULT, ' '},
188	{ "fallback",   LT_FALLBACK,    ' ' },	{"fallback", LT_FALLBACK, ' '},
189	{ "kernel",    LT_KERNEL,    ' ' },	{"kernel", LT_KERNEL, ' '},
190	{ "initrd",    LT_INITRD,    ' ', ' ' },	{"initrd", LT_INITRD, ' ', ' '},
191	{ "module",     LT_MBMODULE,    ' ' },	{"module", LT_MBMODULE, ' '},
192	{ "kernel",     LT_HYPER,       ' ' },	{"kernel", LT_HYPER, ' '},
193	{ NULL,    0, 0 },	{NULL, 0, 0},
194	};	};
195
196		const char *grubFindConfig(struct configFileInfo *cfi)
197		{
198		static const char *configFiles[] = {
199		"/boot/grub/grub.conf",
200		"/boot/grub/menu.lst",
201		"/etc/grub.conf",
202		NULL
203		};
204		static int i = -1;
205
206		if (i == -1) {
207		for (i = 0; configFiles[i] != NULL; i++) {
208		dbgPrintf("Checking \"%s\": ", configFiles[i]);
209		if (!access(configFiles[i], R_OK)) {
210		dbgPrintf("found\n");
211		return configFiles[i];
212		}
213		dbgPrintf("not found\n");
214		}
215		}
216		return configFiles[i];
217		}
218
219	struct configFileInfo grubConfigType = {	struct configFileInfo grubConfigType = {
220	"/boot/grub/grub.conf",    /* defaultConfig */	.findConfig = grubFindConfig,
221	grubKeywords,    /* keywords */	.keywords = grubKeywords,
222	1,    /* defaultIsIndex */	.defaultIsIndex = 1,
223	1,    /* defaultSupportSaved */	.defaultSupportSaved = 1,
224	LT_TITLE,    /* entrySeparator */	.entryStart = LT_TITLE,
225	1,    /* needsBootPrefix */	.needsBootPrefix = 1,
226	0,    /* argsInQuotes */	.mbHyperFirst = 1,
227	0,    /* maxTitleLength */	.mbInitRdIsModule = 1,
228	0,                                      /* titleBracketed */	.mbAllowExtraInitRds = 1,
229	1,                                      /* mbHyperFirst */	.titlePosition = 1,
230	1,                                      /* mbInitRdIsModule */	};
231	0,                                      /* mbConcatArgs */
232	1,                                      /* mbAllowExtraInitRds */	struct keywordTypes grub2Keywords[] = {
233		{"menuentry", LT_MENUENTRY, ' '},
234		{"}", LT_ENTRY_END, ' '},
235		{"echo", LT_ECHO, ' '},
236		{"set", LT_SET_VARIABLE, ' ', '='},
237		{"root", LT_BOOTROOT, ' '},
238		{"default", LT_DEFAULT, ' '},
239		{"fallback", LT_FALLBACK, ' '},
240		{"linux", LT_KERNEL, ' '},
241		{"linuxefi", LT_KERNEL_EFI, ' '},
242		{"linux16", LT_KERNEL_16, ' '},
243		{"initrd", LT_INITRD, ' ', ' '},
244		{"initrdefi", LT_INITRD_EFI, ' ', ' '},
245		{"initrd16", LT_INITRD_16, ' ', ' '},
246		{"module", LT_MBMODULE, ' '},
247		{"kernel", LT_HYPER, ' '},
248		{"devicetree", LT_DEVTREE, ' '},
249		{NULL, 0, 0},
250		};
251
252		const char *grub2FindConfig(struct configFileInfo *cfi)
253		{
254		static const char *configFiles[] = {
255		"/boot/grub/grub-efi.cfg",
256		"/boot/grub/grub.cfg",
257		"/etc/grub2-efi.cfg",
258		"/etc/grub2.cfg",
259		"/boot/grub2/grub.cfg",
260		"/boot/grub2-efi/grub.cfg",
261		NULL
262		};
263		static int i = -1;
264		static const char *grub_cfg = "/boot/grub/grub.cfg";
265		int rc = -1;
266
267		if (i == -1) {
268		for (i = 0; configFiles[i] != NULL; i++) {
269		dbgPrintf("Checking \"%s\": ", configFiles[i]);
270		if ((rc = access(configFiles[i], R_OK))) {
271		if (errno == EACCES) {
272		printf
273		("Unable to access bootloader configuration file "
274		"\"%s\": %m\n", configFiles[i]);
275		exit(1);
276		}
277		continue;
278		} else {
279		dbgPrintf("found\n");
280		return configFiles[i];
281		}
282		}
283		}
284
285		/* Ubuntu renames grub2 to grub, so check for the grub.d directory
286		* that isn't in grub1, and if it exists, return the config file path
287		* that they use. */
288		if (configFiles[i] == NULL && !access("/etc/grub.d/", R_OK)) {
289		dbgPrintf("found\n");
290		return grub_cfg;
291		}
292
293		dbgPrintf("not found\n");
294		return configFiles[i];
295		}
296
297		/* kind of hacky.  It'll give the first 1024 bytes, ish. */
298		static char *grub2GetEnv(struct configFileInfo *info, char *name)
299		{
300		static char buf[1025];
301		char *s = NULL;
302		char *ret = NULL;
303		char *envFile = info->envFile ? info->envFile : "/boot/grub/grubenv";
304		int rc =
305		asprintf(&s, "grub-editenv %s list | grep '^%s='", envFile, name);
306
307		if (rc < 0)
308		return NULL;
309
310		FILE *f = popen(s, "r");
311		if (!f)
312		goto out;
313
314		memset(buf, '\0', sizeof(buf));
315		ret = fgets(buf, 1024, f);
316		pclose(f);
317
318		if (ret) {
319		ret += strlen(name) + 1;
320		ret[strlen(ret) - 1] = '\0';
321		}
322		dbgPrintf("grub2GetEnv(%s): %s\n", name, ret);
323		out:
324		free(s);
325		return ret;
326		}
327
328		static int sPopCount(const char *s, const char *c)
329		{
330		int ret = 0;
331		if (!s)
332		return -1;
333		for (int i = 0; s[i] != '\0'; i++)
334		for (int j = 0; c[j] != '\0'; j++)
335		if (s[i] == c[j])
336		ret++;
337		return ret;
338		}
339
340		static char *shellEscape(const char *s)
341		{
342		int l = strlen(s) + sPopCount(s, "'") * 2;
343
344		char *ret = calloc(l + 1, sizeof(*ret));
345		if (!ret)
346		return NULL;
347		for (int i = 0, j = 0; s[i] != '\0'; i++, j++) {
348		if (s[i] == '\'')
349		ret[j++] = '\\';
350		ret[j] = s[i];
351		}
352		return ret;
353		}
354
355		static void unquote(char *s)
356		{
357		int l = strlen(s);
358
359		if ((s[l - 1] == '\'' && s[0] == '\'')
360		|| (s[l - 1] == '"' && s[0] == '"')) {
361		memmove(s, s + 1, l - 2);
362		s[l - 2] = '\0';
363		}
364		}
365
366		static int grub2SetEnv(struct configFileInfo *info, char *name, char *value)
367		{
368		char *s = NULL;
369		int rc = 0;
370		char *envFile = info->envFile ? info->envFile : "/boot/grub/grubenv";
371
372		unquote(value);
373		value = shellEscape(value);
374		if (!value)
375		return -1;
376
377		rc = asprintf(&s, "grub-editenv %s set '%s=%s'", envFile, name, value);
378		free(value);
379		if (rc < 0)
380		return -1;
381
382		dbgPrintf("grub2SetEnv(%s): %s\n", name, s);
383		rc = system(s);
384		free(s);
385		return rc;
386		}
387
388		/* this is a gigantic hack to avoid clobbering grub2 variables... */
389		static int is_special_grub2_variable(const char *name)
390		{
391		if (!strcmp(name, "\"${next_entry}\""))
392		return 1;
393		if (!strcmp(name, "\"${prev_saved_entry}\""))
394		return 1;
395		return 0;
396		}
397
398		int sizeOfSingleLine(struct singleLine *line)
399		{
400		int count = 0;
401
402		for (int i = 0; i < line->numElements; i++) {
403		int indentSize = 0;
404
405		count = count + strlen(line->elements[i].item);
406
407		indentSize = strlen(line->elements[i].indent);
408		if (indentSize > 0)
409		count = count + indentSize;
410		else
411		/* be extra safe and add room for whitespaces */
412		count = count + 1;
413		}
414
415		/* room for trailing terminator */
416		count = count + 1;
417
418		return count;
419		}
420
421		static int isquote(char q)
422		{
423		if (q == '\'' || q == '\"')
424		return 1;
425		return 0;
426		}
427
428		static int iskernel(enum lineType_e type)
429		{
430		return (type == LT_KERNEL || type == LT_KERNEL_EFI
431		|| type == LT_KERNEL_16);
432		}
433
434		static int isinitrd(enum lineType_e type)
435		{
436		return (type == LT_INITRD || type == LT_INITRD_EFI
437		|| type == LT_INITRD_16);
438		}
439
440		char *grub2ExtractTitle(struct singleLine *line)
441		{
442		char *current;
443		char *current_indent;
444		int current_len;
445		int current_indent_len;
446		int i;
447
448		/* bail out if line does not start with menuentry */
449		if (strcmp(line->elements[0].item, "menuentry"))
450		return NULL;
451
452		i = 1;
453		current = line->elements[i].item;
454		current_len = strlen(current);
455
456		/* if second word is quoted, strip the quotes and return single word */
457		if (isquote(*current) && isquote(current[current_len - 1])) {
458		char *tmp;
459
460		tmp = strdup(current + 1);
461		if (!tmp)
462		return NULL;
463		tmp[strlen(tmp) - 1] = '\0';
464		return tmp;
465		}
466
467		/* if no quotes, return second word verbatim */
468		if (!isquote(*current))
469		return current;
470
471		/* second element start with a quote, so we have to find the element
472		* whose last character is also quote (assuming it's the closing one) */
473		int resultMaxSize;
474		char *result;
475		/* need to ensure that ' does not match " as we search */
476		char quote_char = *current;
477
478		resultMaxSize = sizeOfSingleLine(line);
479		result = malloc(resultMaxSize);
480		snprintf(result, resultMaxSize, "%s", ++current);
481
482		i++;
483		for (; i < line->numElements; ++i) {
484		current = line->elements[i].item;
485		current_len = strlen(current);
486		current_indent = line->elements[i].indent;
487		current_indent_len = strlen(current_indent);
488
489		strncat(result, current_indent, current_indent_len);
490		if (current[current_len - 1] != quote_char) {
491		strncat(result, current, current_len);
492		} else {
493		strncat(result, current, current_len - 1);
494		break;
495		}
496		}
497		return result;
498		}
499
500		struct configFileInfo grub2ConfigType = {
501		.findConfig = grub2FindConfig,
502		.getEnv = grub2GetEnv,
503		.setEnv = grub2SetEnv,
504		.keywords = grub2Keywords,
505		.defaultIsIndex = 1,
506		.defaultSupportSaved = 1,
507		.defaultIsVariable = 1,
508		.entryStart = LT_MENUENTRY,
509		.entryEnd = LT_ENTRY_END,
510		.titlePosition = 1,
511		.needsBootPrefix = 1,
512		.mbHyperFirst = 1,
513		.mbInitRdIsModule = 1,
514		.mbAllowExtraInitRds = 1,
515	};	};
516
517	struct keywordTypes yabootKeywords[] = {	struct keywordTypes yabootKeywords[] = {
518	{ "label",    LT_TITLE,    '=' },	{"label", LT_TITLE, '='},
519	{ "root",    LT_ROOT,    '=' },	{"root", LT_ROOT, '='},
520	{ "default",    LT_DEFAULT,    '=' },	{"default", LT_DEFAULT, '='},
521	{ "image",    LT_KERNEL,    '=' },	{"image", LT_KERNEL, '='},
522	{ "bsd",    LT_GENERIC,    '=' },	{"bsd", LT_GENERIC, '='},
523	{ "macos",    LT_GENERIC,    '=' },	{"macos", LT_GENERIC, '='},
524	{ "macosx",    LT_GENERIC,    '=' },	{"macosx", LT_GENERIC, '='},
525	{ "magicboot",  LT_GENERIC,    '=' },	{"magicboot", LT_GENERIC, '='},
526	{ "darwin",    LT_GENERIC,    '=' },	{"darwin", LT_GENERIC, '='},
527	{ "timeout",    LT_GENERIC,    '=' },	{"timeout", LT_GENERIC, '='},
528	{ "install",    LT_GENERIC,    '=' },	{"install", LT_GENERIC, '='},
529	{ "fstype",    LT_GENERIC,    '=' },	{"fstype", LT_GENERIC, '='},
530	{ "hfstype",    LT_GENERIC,    '=' },	{"hfstype", LT_GENERIC, '='},
531	{ "delay",    LT_GENERIC,    '=' },	{"delay", LT_GENERIC, '='},
532	{ "defaultos",  LT_GENERIC,     '=' },	{"defaultos", LT_GENERIC, '='},
533	{ "init-message", LT_GENERIC,   '=' },	{"init-message", LT_GENERIC, '='},
534	{ "enablecdboot", LT_GENERIC,   ' ' },	{"enablecdboot", LT_GENERIC, ' '},
535	{ "enableofboot", LT_GENERIC,   ' ' },	{"enableofboot", LT_GENERIC, ' '},
536	{ "enablenetboot", LT_GENERIC,  ' ' },	{"enablenetboot", LT_GENERIC, ' '},
537	{ "nonvram",    LT_GENERIC,    ' ' },	{"nonvram", LT_GENERIC, ' '},
538	{ "hide",    LT_GENERIC,    ' ' },	{"hide", LT_GENERIC, ' '},
539	{ "protect",    LT_GENERIC,    ' ' },	{"protect", LT_GENERIC, ' '},
540	{ "nobless",    LT_GENERIC,    ' ' },	{"nobless", LT_GENERIC, ' '},
541	{ "nonvram",    LT_GENERIC,    ' ' },	{"nonvram", LT_GENERIC, ' '},
542	{ "brokenosx",  LT_GENERIC,    ' ' },	{"brokenosx", LT_GENERIC, ' '},
543	{ "usemount",   LT_GENERIC,    ' ' },	{"usemount", LT_GENERIC, ' '},
544	{ "mntpoint",   LT_GENERIC,    '=' },	{"mntpoint", LT_GENERIC, '='},
545	{ "partition",  LT_GENERIC,    '=' },	{"partition", LT_GENERIC, '='},
546	{ "device",    LT_GENERIC,    '=' },	{"device", LT_GENERIC, '='},
547	{ "fstype",    LT_GENERIC,    '=' },	{"fstype", LT_GENERIC, '='},
548	{ "initrd",    LT_INITRD,    '=', ';' },	{"initrd", LT_INITRD, '=', ';'},
549	{ "append",    LT_KERNELARGS,  '=' },	{"append", LT_KERNELARGS, '='},
550	{ "boot",    LT_BOOT,    '=' },	{"boot", LT_BOOT, '='},
551	{ "lba",    LT_LBA,    ' ' },	{"lba", LT_LBA, ' '},
552	{ NULL,    0, 0 },	{NULL, 0, 0},
553	};	};
554
555	struct keywordTypes liloKeywords[] = {	struct keywordTypes liloKeywords[] = {
556	{ "label",    LT_TITLE,    '=' },	{"label", LT_TITLE, '='},
557	{ "root",    LT_ROOT,    '=' },	{"root", LT_ROOT, '='},
558	{ "default",    LT_DEFAULT,    '=' },	{"default", LT_DEFAULT, '='},
559	{ "image",    LT_KERNEL,    '=' },	{"image", LT_KERNEL, '='},
560	{ "other",    LT_OTHER,    '=' },	{"other", LT_OTHER, '='},
561	{ "initrd",    LT_INITRD,    '=' },	{"initrd", LT_INITRD, '='},
562	{ "append",    LT_KERNELARGS,  '=' },	{"append", LT_KERNELARGS, '='},
563	{ "boot",    LT_BOOT,    '=' },	{"boot", LT_BOOT, '='},
564	{ "lba",    LT_LBA,    ' ' },	{"lba", LT_LBA, ' '},
565	{ NULL,    0, 0 },	{NULL, 0, 0},
566	};	};
567
568	struct keywordTypes eliloKeywords[] = {	struct keywordTypes eliloKeywords[] = {
569	{ "label",    LT_TITLE,    '=' },	{"label", LT_TITLE, '='},
570	{ "root",    LT_ROOT,    '=' },	{"root", LT_ROOT, '='},
571	{ "default",    LT_DEFAULT,    '=' },	{"default", LT_DEFAULT, '='},
572	{ "image",    LT_KERNEL,    '=' },	{"image", LT_KERNEL, '='},
573	{ "initrd",    LT_INITRD,    '=' },	{"initrd", LT_INITRD, '='},
574	{ "append",    LT_KERNELARGS,  '=' },	{"append", LT_KERNELARGS, '='},
575	{ "vmm",    LT_HYPER,       '=' },	{"vmm", LT_HYPER, '='},
576	{ NULL,    0, 0 },	{NULL, 0, 0},
577	};	};
578
579	struct keywordTypes siloKeywords[] = {	struct keywordTypes siloKeywords[] = {
580	{ "label",    LT_TITLE,    '=' },	{"label", LT_TITLE, '='},
581	{ "root",    LT_ROOT,    '=' },	{"root", LT_ROOT, '='},
582	{ "default",    LT_DEFAULT,    '=' },	{"default", LT_DEFAULT, '='},
583	{ "image",    LT_KERNEL,    '=' },	{"image", LT_KERNEL, '='},
584	{ "other",    LT_OTHER,    '=' },	{"other", LT_OTHER, '='},
585	{ "initrd",    LT_INITRD,    '=' },	{"initrd", LT_INITRD, '='},
586	{ "append",    LT_KERNELARGS,  '=' },	{"append", LT_KERNELARGS, '='},
587	{ "boot",    LT_BOOT,    '=' },	{"boot", LT_BOOT, '='},
588	{ NULL,    0, 0 },	{NULL, 0, 0},
589	};	};
590
591	struct keywordTypes ziplKeywords[] = {	struct keywordTypes ziplKeywords[] = {
592	{ "target",     LT_BOOTROOT,    '=' },	{"target", LT_BOOTROOT, '='},
593	{ "image",      LT_KERNEL,      '=' },	{"image", LT_KERNEL, '='},
594	{ "ramdisk",    LT_INITRD,      '=' },	{"ramdisk", LT_INITRD, '='},
595	{ "parameters", LT_KERNELARGS,  '=' },	{"parameters", LT_KERNELARGS, '='},
596	{ "default",    LT_DEFAULT,     '=' },	{"default", LT_DEFAULT, '='},
597	{ NULL,         0, 0 },	{NULL, 0, 0},
598	};	};
599
600	struct keywordTypes extlinuxKeywords[] = {	struct keywordTypes extlinuxKeywords[] = {
601	{ "label",    LT_TITLE,    ' ' },	{"label", LT_TITLE, ' '},
602	{ "root",    LT_ROOT,    ' ' },	{"root", LT_ROOT, ' '},
603	{ "default",    LT_DEFAULT,    ' ' },	{"default", LT_DEFAULT, ' '},
604	{ "kernel",    LT_KERNEL,    ' ' },	{"kernel", LT_KERNEL, ' '},
605	{ "initrd",    LT_INITRD,      ' ', ',' },	{"initrd", LT_INITRD, ' ', ','},
606	{ "append",    LT_KERNELARGS,  ' ' },	{"append", LT_KERNELARGS, ' '},
607	{ "prompt",     LT_UNKNOWN,     ' ' },	{"prompt", LT_UNKNOWN, ' '},
608	{ NULL,    0, 0 },	{"fdt", LT_DEVTREE, ' '},
609		{"fdtdir", LT_DEVTREE, ' '},
610		{NULL, 0, 0},
611	};	};
612
613	int useextlinuxmenu;	int useextlinuxmenu;
614	struct configFileInfo eliloConfigType = {	struct configFileInfo eliloConfigType = {
615	"/boot/efi/EFI/redhat/elilo.conf",    /* defaultConfig */	.defaultConfig = "/boot/efi/EFI/redhat/elilo.conf",
616	eliloKeywords,    /* keywords */	.keywords = eliloKeywords,
617	0,    /* defaultIsIndex */	.entryStart = LT_KERNEL,
618	0,    /* defaultSupportSaved */	.needsBootPrefix = 1,
619	LT_KERNEL,    /* entrySeparator */	.argsInQuotes = 1,
620	1,                    /* needsBootPrefix */	.mbConcatArgs = 1,
621	1,    /* argsInQuotes */	.titlePosition = 1,
	0,    /* maxTitleLength */
	0,                                      /* titleBracketed */
	0,                                      /* mbHyperFirst */
	0,                                      /* mbInitRdIsModule */
	1,                                      /* mbConcatArgs */
	0,                                      /* mbAllowExtraInitRds */
622	};	};
623
624	struct configFileInfo liloConfigType = {	struct configFileInfo liloConfigType = {
625	"/etc/lilo.conf",    /* defaultConfig */	.defaultConfig = "/etc/lilo.conf",
626	liloKeywords,    /* keywords */	.keywords = liloKeywords,
627	0,    /* defaultIsIndex */	.entryStart = LT_KERNEL,
628	0,    /* defaultSupportSaved */	.argsInQuotes = 1,
629	LT_KERNEL,    /* entrySeparator */	.maxTitleLength = 15,
630	0,    /* needsBootPrefix */	.titlePosition = 1,
	1,    /* argsInQuotes */
	15,    /* maxTitleLength */
	0,                                      /* titleBracketed */
	0,                                      /* mbHyperFirst */
	0,                                      /* mbInitRdIsModule */
	0,                                      /* mbConcatArgs */
	0,                                      /* mbAllowExtraInitRds */
631	};	};
632
633	struct configFileInfo yabootConfigType = {	struct configFileInfo yabootConfigType = {
634	"/etc/yaboot.conf",    /* defaultConfig */	.defaultConfig = "/etc/yaboot.conf",
635	yabootKeywords,    /* keywords */	.keywords = yabootKeywords,
636	0,    /* defaultIsIndex */	.entryStart = LT_KERNEL,
637	0,    /* defaultSupportSaved */	.needsBootPrefix = 1,
638	LT_KERNEL,    /* entrySeparator */	.argsInQuotes = 1,
639	1,    /* needsBootPrefix */	.maxTitleLength = 15,
640	1,    /* argsInQuotes */	.mbAllowExtraInitRds = 1,
641	15,    /* maxTitleLength */	.titlePosition = 1,
	0,                                      /* titleBracketed */
	0,                                      /* mbHyperFirst */
	0,                                      /* mbInitRdIsModule */
	0,                                      /* mbConcatArgs */
	1,                                      /* mbAllowExtraInitRds */
642	};	};
643
644	struct configFileInfo siloConfigType = {	struct configFileInfo siloConfigType = {
645	"/etc/silo.conf",    /* defaultConfig */	.defaultConfig = "/etc/silo.conf",
646	siloKeywords,    /* keywords */	.keywords = siloKeywords,
647	0,    /* defaultIsIndex */	.entryStart = LT_KERNEL,
648	0,    /* defaultSupportSaved */	.needsBootPrefix = 1,
649	LT_KERNEL,    /* entrySeparator */	.argsInQuotes = 1,
650	1,    /* needsBootPrefix */	.maxTitleLength = 15,
651	1,    /* argsInQuotes */	.titlePosition = 1,
	15,    /* maxTitleLength */
	0,                                      /* titleBracketed */
	0,                                      /* mbHyperFirst */
	0,                                      /* mbInitRdIsModule */
	0,                                      /* mbConcatArgs */
	0,                                      /* mbAllowExtraInitRds */
652	};	};
653
654	struct configFileInfo ziplConfigType = {	struct configFileInfo ziplConfigType = {
655	"/etc/zipl.conf",    /* defaultConfig */	.defaultConfig = "/etc/zipl.conf",
656	ziplKeywords,    /* keywords */	.keywords = ziplKeywords,
657	0,    /* defaultIsIndex */	.entryStart = LT_TITLE,
658	0,    /* defaultSupportSaved */	.argsInQuotes = 1,
659	LT_TITLE,    /* entrySeparator */	.titleBracketed = 1,
	0,    /* needsBootPrefix */
	1,    /* argsInQuotes */
	0,    /* maxTitleLength */
	1,                                      /* titleBracketed */
	0,                                      /* mbHyperFirst */
	0,                                      /* mbInitRdIsModule */
	0,                                      /* mbConcatArgs */
	0,                                      /* mbAllowExtraInitRds */
660	};	};
661
662	struct configFileInfo extlinuxConfigType = {	struct configFileInfo extlinuxConfigType = {
663	"/boot/extlinux/extlinux.conf",         /* defaultConfig */	.defaultConfig = "/boot/extlinux/extlinux.conf",
664	extlinuxKeywords,                       /* keywords */	.keywords = extlinuxKeywords,
665	0,                                      /* defaultIsIndex */	.caseInsensitive = 1,
666	0,                                      /* defaultSupportSaved */	.entryStart = LT_TITLE,
667	LT_TITLE,                               /* entrySeparator */	.needsBootPrefix = 1,
668	1,                                      /* needsBootPrefix */	.maxTitleLength = 255,
669	0,                                      /* argsInQuotes */	.mbAllowExtraInitRds = 1,
670	255,                                    /* maxTitleLength */	.defaultIsUnquoted = 1,
671	0,                                      /* titleBracketed */	.titlePosition = 1,
	0,                                      /* mbHyperFirst */
	0,                                      /* mbInitRdIsModule */
	0,                                      /* mbConcatArgs */
	1,                                      /* mbAllowExtraInitRds */
672	};	};
673
674	struct grubConfig {	struct grubConfig {
675	struct singleLine * theLines;	struct singleLine *theLines;
676	struct singleEntry * entries;	struct singleEntry *entries;
677	char * primaryIndent;	char *primaryIndent;
678	char * secondaryIndent;	char *secondaryIndent;
679	int defaultImage;    /* -1 if none specified -- this value is	int defaultImage; /* -1 if none specified -- this value is
680	* written out, overriding original */	* written out, overriding original */
681	int fallbackImage;    /* just like defaultImage */	int fallbackImage; /* just like defaultImage */
682	int flags;	int flags;
683	struct configFileInfo * cfi;	struct configFileInfo *cfi;
684	};	int isModified; /* assumes only one entry added
685		per invocation of grubby */
686	struct singleEntry * findEntryByIndex(struct grubConfig * cfg, int index);	};
687	struct singleEntry * findEntryByPath(struct grubConfig * cfg,
688	const char * path, const char * prefix,	blkid_cache blkid;
	int * index);
	static int readFile(int fd, char ** bufPtr);
	static void lineInit(struct singleLine * line);
	struct singleLine * lineDup(struct singleLine * line);
	static void lineFree(struct singleLine * line);
	static int lineWrite(FILE * out, struct singleLine * line,
	struct configFileInfo * cfi);
	static int getNextLine(char ** bufPtr, struct singleLine * line,
	struct configFileInfo * cfi);
	static char * getRootSpecifier(char * str);
	static void insertElement(struct singleLine * line,
	const char * item, int insertHere,
	struct configFileInfo * cfi);
	static void removeElement(struct singleLine * line, int removeHere);
	static struct keywordTypes * getKeywordByType(enum lineType_e type,
	struct configFileInfo * cfi);
	static enum lineType_e getTypeByKeyword(char * keyword,
	struct configFileInfo * cfi);
	static struct singleLine * getLineByType(enum lineType_e type,
	struct singleLine * line);
	static int checkForExtLinux(struct grubConfig * config);
	struct singleLine * addLineTmpl(struct singleEntry * entry,
	struct singleLine * tmplLine,
	struct singleLine * prevLine,
	const char * val,
	struct configFileInfo * cfi);
	struct singleLine *  addLine(struct singleEntry * entry,
	struct configFileInfo * cfi,
	enum lineType_e type, char * defaultIndent,
	const char * val);
689
690	static char * sdupprintf(const char *format, ...)	struct singleEntry *findEntryByIndex(struct grubConfig *cfg, int index);
691		struct singleEntry *findEntryByPath(struct grubConfig *cfg,
692		const char *path, const char *prefix,
693		int *index);
694		struct singleEntry *findEntryByTitle(struct grubConfig *cfg, char *title,
695		int *index);
696		static int readFile(int fd, char **bufPtr);
697		static void lineInit(struct singleLine *line);
698		struct singleLine *lineDup(struct singleLine *line);
699		static void lineFree(struct singleLine *line);
700		static int lineWrite(FILE * out, struct singleLine *line,
701		struct configFileInfo *cfi);
702		static int getNextLine(char **bufPtr, struct singleLine *line,
703		struct configFileInfo *cfi);
704		static char *getRootSpecifier(char *str);
705		static void requote(struct singleLine *line, struct configFileInfo *cfi);
706		static void insertElement(struct singleLine *line,
707		const char *item, int insertHere,
708		struct configFileInfo *cfi);
709		static void removeElement(struct singleLine *line, int removeHere);
710		static struct keywordTypes *getKeywordByType(enum lineType_e type,
711		struct configFileInfo *cfi);
712		static enum lineType_e getTypeByKeyword(char *keyword,
713		struct configFileInfo *cfi);
714		static struct singleLine *getLineByType(enum lineType_e type,
715		struct singleLine *line);
716		static int checkForExtLinux(struct grubConfig *config);
717		struct singleLine *addLineTmpl(struct singleEntry *entry,
718		struct singleLine *tmplLine,
719		struct singleLine *prevLine,
720		const char *val, struct configFileInfo *cfi);
721		struct singleLine *addLine(struct singleEntry *entry,
722		struct configFileInfo *cfi,
723		enum lineType_e type, char *defaultIndent,
724		const char *val);
725
726		static char *sdupprintf(const char *format, ...)
727	#ifdef __GNUC__	#ifdef __GNUC__
728	__attribute__ ((format (printf, 1, 2)));	__attribute__ ((format(printf, 1, 2)));
729	#else	#else
730	;	;
731	#endif	#endif
732
733	static char * sdupprintf(const char *format, ...) {	static char *sdupprintf(const char *format, ...)
734	char *buf = NULL;	{
735	char c;	char *buf = NULL;
736	va_list args;	char c;
737	size_t size = 0;	va_list args;
738	va_start(args, format);	size_t size = 0;
739		va_start(args, format);
740	/* XXX requires C99 vsnprintf behavior */
741	size = vsnprintf(&c, 1, format, args) + 1;	/* XXX requires C99 vsnprintf behavior */
742	if (size == -1) {	size = vsnprintf(&c, 1, format, args) + 1;
743	printf("ERROR: vsnprintf behavior is not C99\n");	if (size == -1) {
744	abort();	printf("ERROR: vsnprintf behavior is not C99\n");
745	}	abort();
746		}
747
748	va_end(args);	va_end(args);
749	va_start(args, format);	va_start(args, format);
750
751	buf = malloc(size);	buf = malloc(size);
752	if (buf == NULL)	if (buf == NULL)
753	return NULL;	return NULL;
754	vsnprintf(buf, size, format, args);	vsnprintf(buf, size, format, args);
755	va_end (args);	va_end(args);
756
757	return buf;	return buf;
758	}	}
759
760	static struct keywordTypes * getKeywordByType(enum lineType_e type,	static inline int
761	struct configFileInfo * cfi) {	kwcmp(struct keywordTypes *kw, const char * label, int case_insensitive)
762	struct keywordTypes * kw;	{
763	for (kw = cfi->keywords; kw->key; kw++) {	int kwl = strlen(kw->key);
764	if (kw->type == type)	int ll = strlen(label);
765	return kw;	int rc;
766		int (*snc)(const char *s1, const char *s2, size_t n) =
767		case_insensitive ? strncasecmp : strncmp;
768		int (*sc)(const char *s1, const char *s2) =
769		case_insensitive ? strcasecmp : strcmp;
770
771		rc = snc(kw->key, label, kwl);
772		if (rc)
773		return rc;
774
775		for (int i = kwl; i < ll; i++) {
776		if (isspace(label[i]))
777		return 0;
778		if (kw->separatorChar && label[i] == kw->separatorChar)
779		return 0;
780		else if (kw->nextChar && label[i] == kw->nextChar)
781		return 0;
782		return sc(kw->key+kwl, label+kwl);
783	}	}
784	return NULL;	return 0;
785	}	}
786
787	static char * getpathbyspec(char *device) {	static enum lineType_e preferredLineType(enum lineType_e type,
788	static blkid_cache blkid;	struct configFileInfo *cfi)
789		{
790	if (!blkid)	if (isEfi && cfi == &grub2ConfigType) {
791	blkid_get_cache(&blkid, NULL);	switch (type) {
792		case LT_KERNEL:
793		return isEfiOnly ? LT_KERNEL : LT_KERNEL_EFI;
794		case LT_INITRD:
795		return isEfiOnly ? LT_INITRD : LT_INITRD_EFI;
796		default:
797		return type;
798		}
799		#if defined(__i386__) || defined(__x86_64__)
800		} else if (cfi == &grub2ConfigType) {
801		switch (type) {
802		case LT_KERNEL:
803		return LT_KERNEL_16;
804		case LT_INITRD:
805		return LT_INITRD_16;
806		default:
807		return type;
808		}
809		#endif
810		}
811		return type;
812		}
813
814	return blkid_get_devname(blkid, device, NULL);	static struct keywordTypes *getKeywordByType(enum lineType_e type,
815		struct configFileInfo *cfi)
816		{
817		for (struct keywordTypes * kw = cfi->keywords; kw->key; kw++) {
818		if (kw->type == type)
819		return kw;
820		}
821		return NULL;
822	}	}
823
824	static enum lineType_e getTypeByKeyword(char * keyword,	static char *getKeyByType(enum lineType_e type, struct configFileInfo *cfi)
825	struct configFileInfo * cfi) {	{
826	struct keywordTypes * kw;	struct keywordTypes *kt = getKeywordByType(type, cfi);
827	for (kw = cfi->keywords; kw->key; kw++) {	if (kt)
828	if (!strcmp(keyword, kw->key))	return kt->key;
829	return kw->type;	return "unknown";
	}
	return LT_UNKNOWN;
830	}	}
831
832	static struct singleLine * getLineByType(enum lineType_e type,	static char *getpathbyspec(char *device)
833	struct singleLine * line) {	{
834	dbgPrintf("getLineByType(%d): ", type);	if (!blkid)
835	for (; line; line = line->next) {	blkid_get_cache(&blkid, NULL);
836	dbgPrintf("%d:%s ", line->type,
837	line->numElements ? line->elements[0].item : "(empty)");	return blkid_get_devname(blkid, device, NULL);
	if (line->type & type) break;
	}
	dbgPrintf(line ? "\n" : " (failed)\n");
	return line;
838	}	}
839
840	static int isBracketedTitle(struct singleLine * line) {	static char *getuuidbydev(char *device)
841	if (line->numElements == 1 && *line->elements[0].item == '[') {	{
842	int len = strlen(line->elements[0].item);	if (!blkid)
843	if (*(line->elements[0].item + len - 1) == ']') {	blkid_get_cache(&blkid, NULL);
844	/* FIXME: this is a hack... */
845	if (strcmp(line->elements[0].item, "[defaultboot]")) {	return blkid_get_tag_value(blkid, "UUID", device);
	return 1;
	}
	}
	}
	return 0;
846	}	}
847
848	static int isEntrySeparator(struct singleLine * line,	static enum lineType_e getTypeByKeyword(char *keyword,
849	struct configFileInfo * cfi) {	struct configFileInfo *cfi)
850	return line->type == cfi->entrySeparator || line->type == LT_OTHER ||	{
851	(cfi->titleBracketed && isBracketedTitle(line));	for (struct keywordTypes * kw = cfi->keywords; kw->key; kw++) {
852		if (!kwcmp(kw, keyword, cfi->caseInsensitive))
853		return kw->type;
854		}
855		return LT_UNKNOWN;
856	}	}
857
858	/* extract the title from within brackets (for zipl) */	static struct singleLine *getLineByType(enum lineType_e type,
859	static char * extractTitle(struct singleLine * line) {	struct singleLine *line)
860	/* bracketed title... let's extract it (leaks a byte) */	{
861	char * title;	dbgPrintf("getLineByType(%d): ", type);
862	title = strdup(line->elements[0].item);	for (; line; line = line->next) {
863	title++;	dbgPrintf("%d:%s ", line->type,
864	*(title + strlen(title) - 1) = '\0';	line->numElements ? line->elements[0].
865	return title;	item : "(empty)");
866	}	if (line->type & type)
867		break;
868	static int readFile(int fd, char ** bufPtr) {	}
869	int alloced = 0, size = 0, i = 0;	dbgPrintf(line ? "\n" : " (failed)\n");
870	char * buf = NULL;	return line;
871		}
	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;
	}
872
873	buf = realloc(buf, size + 2);	static int isBracketedTitle(struct singleLine *line)
874	if (size == 0)	{
875	buf[size++] = '\n';	if (line->numElements == 1 && *line->elements[0].item == '[') {
876	else	int len = strlen(line->elements[0].item);
877	if (buf[size - 1] != '\n')	if (*(line->elements[0].item + len - 1) == ']') {
878	buf[size++] = '\n';	/* FIXME: this is a hack... */
879	buf[size] = '\0';	if (strcmp(line->elements[0].item, "[defaultboot]")) {
880		return 1;
881		}
882		}
883		}
884		return 0;
885		}
886
887	*bufPtr = buf;	static int isEntryStart(struct singleLine *line, struct configFileInfo *cfi)
888		{
889		return line->type == cfi->entryStart || line->type == LT_OTHER ||
890		(cfi->titleBracketed && isBracketedTitle(line));
891		}
892
893	return 0;	/* extract the title from within brackets (for zipl) */
894		static char *extractTitle(struct grubConfig *cfg, struct singleLine *line)
895		{
896		/* bracketed title... let's extract it */
897		char *title = NULL;
898		if (line->type == LT_TITLE) {
899		char *tmp = line->elements[cfg->cfi->titlePosition].item;
900		if (cfg->cfi->titleBracketed) {
901		tmp++;
902		title = strdup(tmp);
903		*(title + strlen(title) - 1) = '\0';
904		} else {
905		title = strdup(tmp);
906		}
907		} else if (line->type == LT_MENUENTRY)
908		title = strdup(line->elements[1].item);
909		else
910		return NULL;
911		return title;
912	}	}
913
914	static void lineInit(struct singleLine * line) {	static int readFile(int fd, char **bufPtr)
915	line->indent = NULL;	{
916	line->elements = NULL;	int alloced = 0, size = 0, i = 0;
917	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);
	}
918
919	return newLine;	do {
920	}	size += i;
921		if ((size + 1024) > alloced) {
922		alloced += 4096;
923		buf = realloc(buf, alloced + 1);
924		}
925		} while ((i = read(fd, buf + size, 1024)) > 0);
926
927	static void lineFree(struct singleLine * line) {	if (i < 0) {
928	int i;	fprintf(stderr, _("error reading input: %s\n"),
929		strerror(errno));
930		free(buf);
931		return 1;
932		}
933
934	if (line->indent) free(line->indent);	buf = realloc(buf, size + 2);
935		if (size == 0)
936		buf[size++] = '\n';
937		else if (buf[size - 1] != '\n')
938		buf[size++] = '\n';
939		buf[size] = '\0';
940
941	for (i = 0; i < line->numElements; i++) {	*bufPtr = buf;
	free(line->elements[i].item);
	free(line->elements[i].indent);
	}
942
943	if (line->elements) free(line->elements);	return 0;
	lineInit(line);
944	}	}
945
946	static int lineWrite(FILE * out, struct singleLine * line,	static void lineInit(struct singleLine *line)
947	struct configFileInfo * cfi) {	{
948	int i;	line->type = LT_UNIDENTIFIED;
949		line->indent = NULL;
950		line->elements = NULL;
951		line->numElements = 0;
952		line->next = NULL;
953		}
954
955	if (fprintf(out, "%s", line->indent) == -1) return -1;	struct singleLine *lineDup(struct singleLine *line)
956		{
957		struct singleLine *newLine = malloc(sizeof(*newLine));
958
959	for (i = 0; i < line->numElements; i++) {	newLine->indent = strdup(line->indent);
960	if (i == 1 && line->type == LT_KERNELARGS && cfi->argsInQuotes)	newLine->next = NULL;
961	if (fputc('"', out) == EOF) return -1;	newLine->type = line->type;
962		newLine->numElements = line->numElements;
963		newLine->elements = malloc(sizeof(*newLine->elements) *
964		newLine->numElements);
965
966	if (fprintf(out, "%s", line->elements[i].item) == -1) return -1;	for (int i = 0; i < newLine->numElements; i++) {
967	if (i < line->numElements - 1)	newLine->elements[i].indent = strdup(line->elements[i].indent);
968	if (fprintf(out, "%s", line->elements[i].indent) == -1) return -1;	newLine->elements[i].item = strdup(line->elements[i].item);
969	}	}
970
971		return newLine;
972		}
973
974	if (line->type == LT_KERNELARGS && cfi->argsInQuotes)	static void lineFree(struct singleLine *line)
975	if (fputc('"', out) == EOF) return -1;	{
976		if (line->indent)
977		free(line->indent);
978
979	if (fprintf(out, "\n") == -1) return -1;	for (int i = 0; i < line->numElements; i++) {
980		free(line->elements[i].item);
981		free(line->elements[i].indent);
982		}
983
984	return 0;	if (line->elements)
985		free(line->elements);
986		lineInit(line);
987	}	}
988
989	/* we've guaranteed that the buffer ends w/ \n\0 */	static int lineWrite(FILE * out, struct singleLine *line,
990	static int getNextLine(char ** bufPtr, struct singleLine * line,	struct configFileInfo *cfi)
991	struct configFileInfo * cfi) {	{
992	char * end;	if (fprintf(out, "%s", line->indent) == -1)
993	char * start = *bufPtr;	return -1;
	char * chptr;
	int elementsAlloced = 0;
	struct lineElement * element;
	int first = 1;
994
995	lineFree(line);	for (int i = 0; i < line->numElements; i++) {
996		/* Need to handle this, because we strip the quotes from
997		* menuentry when read it. */
998		if (line->type == LT_MENUENTRY && i == 1) {
999		if (!isquote(*line->elements[i].item)) {
1000		int substring = 0;
1001		/* If the line contains nested quotes, we did
1002		* not strip the "interna" quotes and we must
1003		* use the right quotes again when writing
1004		* the updated file. */
1005		for (int j = i; j < line->numElements; j++) {
1006		if (strchr(line->elements[i].item, '\'')
1007		!= NULL) {
1008		substring = 1;
1009		fprintf(out, "\"%s\"",
1010		line->elements[i].item);
1011		break;
1012		}
1013		}
1014		if (!substring)
1015		fprintf(out, "\'%s\'",
1016		line->elements[i].item);
1017		} else {
1018		fprintf(out, "%s", line->elements[i].item);
1019		}
1020		fprintf(out, "%s", line->elements[i].indent);
1021
1022	end = strchr(start, '\n');	continue;
1023	*end = '\0';	}
	*bufPtr = end + 1;
1024
1025	for (chptr = start; *chptr && isspace(*chptr); chptr++) ;	if (i == 1 && line->type == LT_KERNELARGS && cfi->argsInQuotes)
1026		if (fputc('"', out) == EOF)
1027		return -1;
1028
1029		if (fprintf(out, "%s", line->elements[i].item) == -1)
1030		return -1;
1031		if (i < line->numElements - 1 || line->type == LT_SET_VARIABLE)
1032		if (fprintf(out, "%s", line->elements[i].indent) == -1)
1033		return -1;
1034		}
1035
1036		if (line->type == LT_KERNELARGS && cfi->argsInQuotes)
1037		if (fputc('"', out) == EOF)
1038		return -1;
1039
1040	line->indent = strndup(start, chptr - start);	if (fprintf(out, "\n") == -1)
1041	start = chptr;	return -1;
1042
1043	while (start < end) {	return 0;
1044	/* we know !isspace(*start) */	}
1045
1046	if (elementsAlloced == line->numElements) {	/* we've guaranteed that the buffer ends w/ \n\0 */
1047	elementsAlloced += 5;	static int getNextLine(char **bufPtr, struct singleLine *line,
1048	line->elements = realloc(line->elements,	struct configFileInfo *cfi)
1049	sizeof(*line->elements) * elementsAlloced);	{
1050	}	char *end;
1051		char *start = *bufPtr;
1052		char *chptr;
1053		int elementsAlloced = 0;
1054		struct lineElement *element;
1055		int first = 1;
1056
1057	element = line->elements + line->numElements;	lineFree(line);
1058
1059	chptr = start;	end = strchr(start, '\n');
1060	while (*chptr && !isspace(*chptr)) {	*end = '\0';
1061	if (first && *chptr == '=') break;	*bufPtr = end + 1;
	chptr++;
	}
	element->item = strndup(start, chptr - start);
	start = chptr;
1062
1063	/* 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));
1064
1065	element->indent = strndup(start, chptr - start);	line->indent = strndup(start, chptr - start);
1066	start = chptr;	start = chptr;
1067
1068	line->numElements++;	while (start < end) {
1069	first = 0;	/* we know !isspace(*start) */
	}
1070
1071	if (!line->numElements)	if (elementsAlloced == line->numElements) {
1072	line->type = LT_WHITESPACE;	elementsAlloced += 5;
1073	else {	line->elements = realloc(line->elements,
1074	line->type = getTypeByKeyword(line->elements[0].item, cfi);	sizeof(*line->elements) *
1075	if (line->type == LT_UNKNOWN) {	elementsAlloced);
1076	/* 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);
1077
1078	fullLine = malloc(len + 1);	element = line->elements + line->numElements;
	strcpy(fullLine, line->indent);
	free(line->indent);
	line->indent = fullLine;
1079
1080	for (i = 0; i < line->numElements; i++) {	chptr = start;
1081	strcat(fullLine, line->elements[i].item);	while (*chptr && !isspace(*chptr)) {
1082	strcat(fullLine, line->elements[i].indent);	if (first && *chptr == '=')
1083	free(line->elements[i].item);	break;
1084	free(line->elements[i].indent);	chptr++;
1085	}	}
1086		if (line->type == LT_UNIDENTIFIED)
1087		line->type = getTypeByKeyword(start, cfi);
1088		element->item = strndup(start, chptr - start);
1089		start = chptr;
1090
1091		/* lilo actually accepts the pathological case of
1092		* append = " foo " */
1093		if (*start == '=')
1094		chptr = start + 1;
1095		else
1096		chptr = start;
1097
1098		do {
1099		for (; *chptr && isspace(*chptr); chptr++) ;
1100		if (*chptr == '=')
1101		chptr = chptr + 1;
1102		} while (isspace(*chptr));
1103
1104	line->type = LT_WHITESPACE;	element->indent = strndup(start, chptr - start);
1105	line->numElements = 0;	start = chptr;
	}
	} else {
	struct keywordTypes *kw;
1106
1107	kw = getKeywordByType(line->type, cfi);	line->numElements++;
1108		first = 0;
1109		}
1110
1111	/* space isn't the only separator, we need to split	if (!line->numElements)
1112	* elements up more	line->type = LT_WHITESPACE;
1113	*/	else {
1114	if (!isspace(kw->separatorChar)) {	line->type = getTypeByKeyword(line->elements[0].item, cfi);
1115	int i;	if (line->type == LT_UNKNOWN) {
1116	char indent[2] = "";	/* zipl does [title] instead of something reasonable
1117	indent[0] = kw->separatorChar;	* like all the other boot loaders.  kind of ugly */
1118	for (i = 1; i < line->numElements; i++) {	if (cfi->titleBracketed && isBracketedTitle(line)) {
1119	char *p;	line->type = LT_TITLE;
	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];
1120	}	}
	line->numElements += numNewElements;
	p = line->elements[i].item;
	while (*p != '\0') {
1121
1122	while (*p != kw->separatorChar && *p != '\0') p++;	/* this is awkward, but we need to be able to handle
1123	if (*p == '\0') {	* keywords that begin with a # (specifically for
1124	break;	* #boot in grub.conf), but still make comments lines
1125		* with no elements (everything stored in the indent
1126		*/
1127		if (*line->elements[0].item == '#') {
1128		char *fullLine;
1129		int len;
1130
1131		len = strlen(line->indent);
1132		for (int i = 0; i < line->numElements; i++)
1133		len += strlen(line->elements[i].item) +
1134		strlen(line->elements[i].indent);
1135
1136		fullLine = malloc(len + 1);
1137		strcpy(fullLine, line->indent);
1138		free(line->indent);
1139		line->indent = fullLine;
1140
1141		for (int i = 0; i < line->numElements; i++) {
1142		strcat(fullLine,
1143		line->elements[i].item);
1144		strcat(fullLine,
1145		line->elements[i].indent);
1146		free(line->elements[i].item);
1147		free(line->elements[i].indent);
1148	}	}
1149
1150	free(line->elements[i].indent);	line->type = LT_WHITESPACE;
1151	line->elements[i].indent = strdup(indent);	line->numElements = 0;
	*p++ = '\0';
	i++;
	line->elements[i].item = strdup(p);
	line->elements[i].indent = strdup("");
	p = line->elements[i].item;
1152	}	}
1153	}	} else if (line->type == LT_INITRD) {
1154	}	struct keywordTypes *kw;
	}
	}
1155
1156	return 0;	kw = getKeywordByType(line->type, cfi);
	}
1157
1158	static struct grubConfig * readConfig(const char * inName,	/* space isn't the only separator, we need to split
1159	struct configFileInfo * cfi) {	* elements up more
1160	int in;	*/
1161	char * incoming = NULL, * head;	if (!isspace(kw->separatorChar)) {
1162	int rc;	char indent[2] = "";
1163	int sawEntry = 0;	indent[0] = kw->separatorChar;
1164	int movedLine = 0;	for (int i = 1; i < line->numElements; i++) {
1165	struct grubConfig * cfg;	char *p;
1166	struct singleLine * last = NULL, * line, * defaultLine = NULL;	int numNewElements;
1167	char * end;
1168	struct singleEntry * entry = NULL;	numNewElements = 0;
1169	int i, len;	p = line->elements[i].item;
1170	char * buf;	while (*p != '\0') {
1171		if (*p == kw->separatorChar)
1172	if (!strcmp(inName, "-")) {	numNewElements++;
1173	in = 0;	p++;
1174	} else {	}
1175	if ((in = open(inName, O_RDONLY)) < 0) {	if (line->numElements +
1176	fprintf(stderr, _("error opening %s for read: %s\n"),	numNewElements >= elementsAlloced) {
1177	inName, strerror(errno));	elementsAlloced +=
1178	return NULL;	numNewElements + 5;
1179	}	line->elements =
1180	}	realloc(line->elements,
1181		sizeof(*line->
1182		elements) *
1183		elementsAlloced);
1184		}
1185
1186	rc = readFile(in, &incoming);	for (int j = line->numElements; j > i;
1187	close(in);	j--) {
1188	if (rc) return NULL;	line->elements[j +
1189		numNewElements] =
1190	head = incoming;	line->elements[j];
1191	cfg = malloc(sizeof(*cfg));	}
1192	cfg->primaryIndent = strdup("");	line->numElements += numNewElements;
	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);
1193
1194	if (getNextLine(&head, line, cfi)) {	p = line->elements[i].item;
1195	free(line);	while (*p != '\0') {
	/* XXX memory leak of everything in cfg */
	return NULL;
	}
	if (!sawEntry && line->numElements) {
	free(cfg->primaryIndent);
	cfg->primaryIndent = strdup(line->indent);
	} else if (line->numElements) {
	free(cfg->secondaryIndent);
	cfg->secondaryIndent = strdup(line->indent);
	}
	if (isEntrySeparator(line, cfi)) {
	sawEntry = 1;
	if (!entry) {
	cfg->entries = malloc(sizeof(*entry));
	entry = cfg->entries;
	} else {
	entry->next = malloc(sizeof(*entry));
	entry = entry->next;
	}
1196
1197	entry->skip = 0;	while (*p != kw->separatorChar
1198	entry->multiboot = 0;	&& *p != '\0')
1199	entry->lines = NULL;	p++;
1200	entry->next = NULL;	if (*p == '\0') {
1201	}	break;
1202		}
1203	if (line->type == LT_DEFAULT && line->numElements == 2) {
1204	cfg->flags &= ~GRUB_CONFIG_NO_DEFAULT;	line->elements[i + 1].indent =
1205	defaultLine = line;	line->elements[i].indent;
1206		line->elements[i].indent =
1207	} else if (line->type == LT_KERNEL) {	strdup(indent);
1208	/* if by some freak chance this is multiboot and the "module"	*p++ = '\0';
1209	* lines came earlier in the template, make sure to use LT_HYPER	i++;
1210	* instead of LT_KERNEL now	line->elements[i].item =
1211	*/	strdup(p);
1212	if (entry->multiboot)	}
1213	line->type = LT_HYPER;	}
1214		}
1215	} else if (line->type == LT_MBMODULE) {	} else if (line->type == LT_SET_VARIABLE) {
1216	/* go back and fix the LT_KERNEL line to indicate LT_HYPER	/* and if it's a "set blah=" we need to split it
1217	* instead, now that we know this is a multiboot entry.	* yet a third way to avoid rhbz# XXX FIXME :/
1218	* This only applies to grub, but that's the only place we	*/
1219	* should find LT_MBMODULE lines anyway.	char *eq;
1220	*/	int l;
1221	struct singleLine * l;	int numElements = line->numElements;
1222	for (l = entry->lines; l; l = l->next) {	struct lineElement *newElements;
1223	if (l->type == LT_HYPER)	eq = strchr(line->elements[1].item, '=');
1224	break;	if (!eq)
1225	else if (l->type == LT_KERNEL) {	return 0;
1226	l->type = LT_HYPER;	l = eq - line->elements[1].item;
1227	break;	if (eq[1] != 0)
1228	}	numElements++;
1229	}	newElements = calloc(numElements,sizeof (*newElements));
1230	entry->multiboot = 1;	memcpy(&newElements[0], &line->elements[0],
1231		sizeof (newElements[0]));
1232	} else if (line->type == LT_HYPER) {	newElements[1].item =
1233	entry->multiboot = 1;	strndup(line->elements[1].item, l);
1234		newElements[1].indent = "=";
1235	} else if (line->type == LT_FALLBACK && line->numElements == 2) {	*(eq++) = '\0';
1236	cfg->fallbackImage = strtol(line->elements[1].item, &end, 10);	newElements[2].item = strdup(eq);
1237	if (*end) cfg->fallbackImage = -1;	free(line->elements[1].item);
1238		if (line->elements[1].indent)
1239	} else if (line->type == LT_TITLE && line->numElements > 1) {	newElements[2].indent = line->elements[1].indent;
1240	/* make the title a single argument (undoing our parsing) */	for (int i = 2; i < line->numElements; i++) {
1241	len = 0;	newElements[i+1].item = line->elements[i].item;
1242	for (i = 1; i < line->numElements; i++) {	newElements[i+1].indent =
1243	len += strlen(line->elements[i].item);	line->elements[i].indent;
1244	len += strlen(line->elements[i].indent);	}
1245	}	free(line->elements);
1246	buf = malloc(len + 1);	line->elements = newElements;
1247	*buf = '\0';	line->numElements = numElements;
1248		}
1249		}
1250
1251	for (i = 1; i < line->numElements; i++) {	return 0;
1252	strcat(buf, line->elements[i].item);	}
	free(line->elements[i].item);
1253
1254	if ((i + 1) != line->numElements) {	static int isnumber(const char *s)
1255	strcat(buf, line->elements[i].indent);	{
1256	free(line->elements[i].indent);	int i;
1257	}	for (i = 0; s[i] != '\0'; i++)
1258	}	if (s[i] < '0' || s[i] > '9')
1259		return 0;
1260	line->elements[1].indent =	return i;
1261	line->elements[line->numElements - 1].indent;	}
	line->elements[1].item = buf;
	line->numElements = 2;
	} 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 (*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 (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;
1262
1263	if (sawEntry) {	static struct grubConfig *readConfig(const char *inName,
1264	if (!entry->lines)	struct configFileInfo *cfi)
1265	entry->lines = line;	{
1266	else	int in;
1267	last->next = line;	char *incoming = NULL, *head;
1268	dbgPrintf("readConfig added %d to %p\n", line->type, entry);	int rc;
1269		int sawEntry = 0;
1270		int movedLine = 0;
1271		struct grubConfig *cfg;
1272		struct singleLine *last = NULL, *line, *defaultLine = NULL;
1273		char *end;
1274		struct singleEntry *entry = NULL;
1275		int len;
1276		char *buf;
1277
1278		if (inName == NULL) {
1279		printf("Could not find bootloader configuration\n");
1280		exit(1);
1281		} else if (!strcmp(inName, "-")) {
1282		in = 0;
1283	} else {	} else {
1284	if (!cfg->theLines)	if ((in = open(inName, O_RDONLY)) < 0) {
1285	cfg->theLines = line;	fprintf(stderr, _("error opening %s for read: %s\n"),
1286	else	inName, strerror(errno));
1287	last->next = line;	return NULL;
1288	dbgPrintf("readConfig added %d to cfg\n", line->type);	}
1289	}	}
1290
1291	last = line;	rc = readFile(in, &incoming);
1292	}	close(in);
1293		if (rc)
1294		return NULL;
1295
1296		head = incoming;
1297		cfg = malloc(sizeof(*cfg));
1298		cfg->primaryIndent = strdup("");
1299		cfg->secondaryIndent = strdup("\t");
1300		cfg->flags = GRUB_CONFIG_NO_DEFAULT;
1301		cfg->cfi = cfi;
1302		cfg->theLines = NULL;
1303		cfg->entries = NULL;
1304		cfg->fallbackImage = 0;
1305		cfg->isModified = 0;
1306
1307		/* copy everything we have */
1308		while (*head) {
1309		line = malloc(sizeof(*line));
1310		lineInit(line);
1311
1312		if (getNextLine(&head, line, cfi)) {
1313		free(line);
1314		/* XXX memory leak of everything in cfg */
1315		return NULL;
1316		}
1317
1318	free(incoming);	if (!sawEntry && line->numElements) {
1319		free(cfg->primaryIndent);
1320		cfg->primaryIndent = strdup(line->indent);
1321		} else if (line->numElements) {
1322		free(cfg->secondaryIndent);
1323		cfg->secondaryIndent = strdup(line->indent);
1324		}
1325
1326	if (defaultLine) {	if (isEntryStart(line, cfi) || (cfg->entries && !sawEntry)) {
1327	if (cfi->defaultSupportSaved &&	sawEntry = 1;
1328	!strncmp(defaultLine->elements[1].item, "saved", 5)) {	if (!entry) {
1329	cfg->defaultImage = DEFAULT_SAVED;	cfg->entries = malloc(sizeof(*entry));
1330	} else if (cfi->defaultIsIndex) {	entry = cfg->entries;
1331	cfg->defaultImage = strtol(defaultLine->elements[1].item, &end, 10);	} else {
1332	if (*end) cfg->defaultImage = -1;	entry->next = malloc(sizeof(*entry));
1333	} else if (defaultLine->numElements >= 2) {	entry = entry->next;
1334	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;
	}
1335
1336	if (entry){	entry->skip = 0;
1337	cfg->defaultImage = i;	entry->multiboot = 0;
1338	}else{	entry->lines = NULL;
1339	cfg->defaultImage = -1;	entry->next = NULL;
1340	}	}
	}
	} else {
	cfg->defaultImage = 0;
	}
1341
1342	return cfg;	if (line->type == LT_SET_VARIABLE) {
1343	}	dbgPrintf("found 'set' command (%d elements): ",
1344		line->numElements);
1345		dbgPrintf("%s", line->indent);
1346		for (int i = 0; i < line->numElements; i++)
1347		dbgPrintf("\"%s\"%s", line->elements[i].item,
1348		line->elements[i].indent);
1349		dbgPrintf("\n");
1350		struct keywordTypes *kwType =
1351		getKeywordByType(LT_DEFAULT, cfi);
1352		if (kwType && line->numElements == 3
1353		&& !strcmp(line->elements[1].item, kwType->key)
1354		&& !is_special_grub2_variable(
1355		line->elements[2].item)) {
1356		dbgPrintf("Line sets default config\n");
1357		cfg->flags &= ~GRUB_CONFIG_NO_DEFAULT;
1358		defaultLine = line;
1359		}
1360		} else if (iskernel(line->type)) {
1361		/* if by some freak chance this is multiboot and the
1362		* "module" lines came earlier in the template, make
1363		* sure to use LT_HYPER instead of LT_KERNEL now
1364		*/
1365		if (entry && entry->multiboot)
1366		line->type = LT_HYPER;
1367
1368	static void writeDefault(FILE * out, char * indent,	} else if (line->type == LT_MBMODULE) {
1369	char * separator, struct grubConfig * cfg) {	/* go back and fix the LT_KERNEL line to indicate
1370	struct singleEntry * entry;	* LT_HYPER instead, now that we know this is a
1371	struct singleLine * line;	* multiboot entry.  This only applies to grub, but
1372	int i;	* that's the only place we should find LT_MBMODULE
1373		* lines anyway.
1374		*/
1375		for (struct singleLine * l = entry->lines; l;
1376		l = l->next) {
1377		if (l->type == LT_HYPER)
1378		break;
1379		else if (iskernel(l->type)) {
1380		l->type = LT_HYPER;
1381		break;
1382		}
1383		}
1384		entry->multiboot = 1;
1385
1386	if (!cfg->defaultImage && cfg->flags == GRUB_CONFIG_NO_DEFAULT) return;	} else if (line->type == LT_HYPER) {
1387		entry->multiboot = 1;
1388
1389	if (cfg->defaultImage == DEFAULT_SAVED)	} else if (line->type == LT_FALLBACK && line->numElements == 2) {
1390	fprintf(out, "%sdefault%ssaved\n", indent, separator);	cfg->fallbackImage =
1391	else if (cfg->defaultImage > -1) {	strtol(line->elements[1].item, &end, 10);
1392	if (cfg->cfi->defaultIsIndex) {	if (*end)
1393	fprintf(out, "%sdefault%s%d\n", indent, separator,	cfg->fallbackImage = -1;
1394	cfg->defaultImage);
1395	} else {	} else if ((line->type == LT_DEFAULT && cfi->defaultIsUnquoted)
1396	int image = cfg->defaultImage;	|| (line->type == LT_TITLE
1397		&& line->numElements > 1)) {
1398		/* make the title/default a single argument (undoing
1399		* our parsing) */
1400		len = 0;
1401		for (int i = 1; i < line->numElements; i++) {
1402		len += strlen(line->elements[i].item);
1403		len += strlen(line->elements[i].indent);
1404		}
1405		buf = malloc(len + 1);
1406		*buf = '\0';
1407
1408	entry = cfg->entries;	for (int i = 1; i < line->numElements; i++) {
1409	while (entry && entry->skip) entry = entry->next;	strcat(buf, line->elements[i].item);
1410		free(line->elements[i].item);
1411
1412		if ((i + 1) != line->numElements) {
1413		strcat(buf, line->elements[i].indent);
1414		free(line->elements[i].indent);
1415		}
1416		}
1417
1418	i = 0;	line->elements[1].indent =
1419	while (entry && i < image) {	line->elements[line->numElements - 1].indent;
1420	entry = entry->next;	line->elements[1].item = buf;
1421		line->numElements = 2;
1422		} else if (line->type == LT_MENUENTRY && line->numElements > 3) {
1423		/* let --remove-kernel="TITLE=what" work */
1424		len = 0;
1425		char *extras;
1426		char *title;
1427		/* initially unseen value */
1428		char quote_char = '\0';
1429
1430		for (int i = 1; i < line->numElements; i++) {
1431		len += strlen(line->elements[i].item);
1432		len += strlen(line->elements[i].indent);
1433		}
1434		buf = malloc(len + 1);
1435		*buf = '\0';
1436
1437	while (entry && entry->skip) entry = entry->next;	/* allocate mem for extra flags. */
1438	i++;	extras = malloc(len + 1);
1439	}	*extras = '\0';
1440
1441		/* get title. */
1442		for (int i = 0; i < line->numElements; i++) {
1443		if (!strcmp
1444		(line->elements[i].item, "menuentry"))
1445		continue;
1446		if (isquote(*line->elements[i].item)
1447		&& quote_char == '\0') {
1448		/* ensure we properly pair off quotes */
1449		quote_char = *line->elements[i].item;
1450		title = line->elements[i].item + 1;
1451		} else {
1452		title = line->elements[i].item;
1453		}
1454
1455	if (!entry) return;	len = strlen(title);
1456		if (title[len - 1] == quote_char) {
1457		strncat(buf, title, len - 1);
1458		break;
1459		} else {
1460		strcat(buf, title);
1461		strcat(buf, line->elements[i].indent);
1462		}
1463		}
1464
1465	line = getLineByType(LT_TITLE, entry->lines);	/* get extras */
1466		int count = 0;
1467		quote_char = '\0';
1468		for (int i = 0; i < line->numElements; i++) {
1469		if (count >= 2) {
1470		strcat(extras, line->elements[i].item);
1471		strcat(extras,
1472		line->elements[i].indent);
1473		}
1474
1475	if (line && line->numElements >= 2)	if (!strcmp
1476	fprintf(out, "%sdefault%s%s\n", indent, separator,	(line->elements[i].item, "menuentry"))
1477	line->elements[1].item);	continue;
1478	else if (line && (line->numElements == 1) &&
1479	cfg->cfi->titleBracketed) {	/* count ' or ", there should be two in menuentry line. */
1480	fprintf(out, "%sdefault%s%s\n", indent, separator,	if (isquote(*line->elements[i].item)
1481	extractTitle(line));	&& quote_char == '\0') {
1482	}	/* ensure we properly pair off quotes */
1483	}	quote_char = *line->elements[i].item;
1484	}	count++;
1485	}	}
1486
1487	static int writeConfig(struct grubConfig * cfg, char * outName,	len = strlen(line->elements[i].item);
	const char * prefix) {
	FILE * out;
	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;
	}
	}
	}
1488
1489	line = cfg->theLines;	if (line->elements[i].item[len - 1] ==
1490	while (line) {	quote_char)
1491	if (line->type == LT_DEFAULT) {	count++;
	writeDefault(out, line->indent, line->elements[0].indent, cfg);
	needs &= ~MAIN_DEFAULT;
	} else if (line->type == LT_FALLBACK) {
	if (cfg->fallbackImage > -1)
	fprintf(out, "%s%s%s%d\n", line->indent,
	line->elements[0].item, line->elements[0].indent,
	cfg->fallbackImage);
	} else {
	if (lineWrite(out, line, cfg->cfi) == -1) {
	fprintf(stderr, _("grubby: error writing %s: %s\n"),
	tmpOutName, strerror(errno));
	fclose(out);
	unlink(tmpOutName);
	return 1;
	}
	}
1492
1493	line = line->next;	/* ok, we get the final ' or ", others are extras. */
1494	}	}
1495		line->elements[1].indent =
1496		line->elements[line->numElements - 2].indent;
1497		line->elements[1].item = buf;
1498		line->elements[2].indent =
1499		line->elements[line->numElements - 2].indent;
1500		line->elements[2].item = extras;
1501		line->numElements = 3;
1502		} else if (line->type == LT_KERNELARGS && cfi->argsInQuotes) {
1503		/* Strip off any " which may be present; they'll be
1504		* put back on write. This is one of the few (the
1505		* only?) places that grubby canonicalizes the output
1506		*/
1507		if (line->numElements >= 2) {
1508		int last, len;
1509
1510	if (needs & MAIN_DEFAULT) {	if (isquote(*line->elements[1].item))
1511	writeDefault(out, cfg->primaryIndent, "=", cfg);	memmove(line->elements[1].item,
1512	needs &= ~MAIN_DEFAULT;	line->elements[1].item + 1,
1513	}	strlen(line->elements[1].item +
1514		1) + 1);
1515
1516		last = line->numElements - 1;
1517		len = strlen(line->elements[last].item) - 1;
1518		if (isquote(line->elements[last].item[len]))
1519		line->elements[last].item[len] = '\0';
1520		}
1521		}
1522
1523	i = 0;	if (line->type == LT_DEFAULT && line->numElements == 2) {
1524	while ((entry = findEntryByIndex(cfg, i++))) {	cfg->flags &= ~GRUB_CONFIG_NO_DEFAULT;
1525	if (entry->skip) continue;	defaultLine = line;
1526		}
1527
1528	line = entry->lines;	/* If we find a generic config option which should live at the
1529	while (line) {	top of the file, move it there. Old versions of grubby were
1530	if (lineWrite(out, line, cfg->cfi) == -1) {	probably responsible for putting new images in the wrong
1531	fprintf(stderr, _("grubby: error writing %s: %s\n"),	place in front of it anyway. */
1532	tmpOutName, strerror(errno));	if (sawEntry && line->type == LT_GENERIC) {
1533	fclose(out);	struct singleLine **l = &cfg->theLines;
1534	unlink(tmpOutName);	struct singleLine **last_nonws = &cfg->theLines;
1535	return 1;	while (*l) {
1536	}	if ((*l)->type != LT_WHITESPACE)
1537	line = line->next;	last_nonws = &((*l)->next);
1538	}	l = &((*l)->next);
1539	}	}
1540		line->next = *last_nonws;
1541		*last_nonws = line;
1542		movedLine = 1;
1543		continue; /* without setting 'last' */
1544		}
1545
1546	if (tmpOutName) {	/* If a second line of whitespace happens after a generic
1547	if (rename(tmpOutName, outName)) {	* option which was moved, drop it. */
1548	fprintf(stderr, _("grubby: error moving %s to %s: %s\n"),	if (movedLine && line->type == LT_WHITESPACE
1549	tmpOutName, outName, strerror(errno));	&& last->type == LT_WHITESPACE) {
1550	unlink(outName);	lineFree(line);
1551	return 1;	free(line);
1552	}	movedLine = 0;
1553	}	continue;
1554		}
1555		movedLine = 0;
1556
1557	return 0;	if (sawEntry) {
1558	}	if (!entry->lines)
1559		entry->lines = line;
1560		else
1561		last->next = line;
1562		dbgPrintf("readConfig added %s to %p\n",
1563		getKeyByType(line->type, cfi), entry);
1564
1565	static int numEntries(struct grubConfig *cfg) {	/* we could have seen this outside of an entry... if
1566	int i = 0;	* so, we ignore it like any other line we don't grok
1567	struct singleEntry * entry;	*/
1568		if (line->type == LT_ENTRY_END && sawEntry)
1569	entry = cfg->entries;	sawEntry = 0;
1570	while (entry) {	} else {
1571	if (!entry->skip)	if (!cfg->theLines)
1572	i++;	cfg->theLines = line;
1573	entry = entry->next;	else
1574	}	last->next = line;
1575	return i;	dbgPrintf("readConfig added %s to cfg\n",
1576	}	getKeyByType(line->type, cfi));
1577		}
1578
1579	int suitableImage(struct singleEntry * entry, const char * bootPrefix,	last = line;
1580	int skipRemoved, int flags) {	}
	struct singleLine * line;
	char * fullName;
	int i;
	struct stat sb, sb2;
	char * dev;
	char * rootspec;
	if (skipRemoved && entry->skip) return 0;
	line = getLineByType(LT_KERNEL|LT_HYPER, entry->lines);
	if (!line || line->numElements < 2) return 0;
	if (flags & GRUBBY_BADIMAGE_OKAY) return 1;
	fullName = alloca(strlen(bootPrefix) +
	strlen(line->elements[1].item) + 1);
	rootspec = getRootSpecifier(line->elements[1].item);
	sprintf(fullName, "%s%s", bootPrefix,
	line->elements[1].item + (rootspec ? strlen(rootspec) : 0));
	if (access(fullName, R_OK)) 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);
1581
1582	if (line && line->numElements >= 2) {	free(incoming);
1583	dev = line->elements[1].item;
1584		dbgPrintf("defaultLine is %s\n", defaultLine ? "set" : "unset");
1585		if (defaultLine) {
1586		if (defaultLine->numElements > 2 &&
1587		cfi->defaultSupportSaved &&
1588		!strncmp(defaultLine->elements[2].item,
1589		"\"${saved_entry}\"", 16)) {
1590		cfg->cfi->defaultIsSaved = 1;
1591		cfg->defaultImage = DEFAULT_SAVED_GRUB2;
1592		if (cfg->cfi->getEnv) {
1593		char *defTitle =
1594		cfi->getEnv(cfg->cfi, "saved_entry");
1595		if (defTitle) {
1596		int index = 0;
1597		if (isnumber(defTitle)) {
1598		index = atoi(defTitle);
1599		entry =
1600		findEntryByIndex(cfg,
1601		index);
1602		} else {
1603		entry =
1604		findEntryByTitle(cfg,
1605		defTitle,
1606		&index);
1607		}
1608		if (entry)
1609		cfg->defaultImage = index;
1610		}
1611		}
1612		} else if (cfi->defaultIsVariable) {
1613		if (defaultLine->numElements == 2) {
1614		char *value = defaultLine->elements[1].item + 8;
1615		while (*value && (*value == '"' ||
1616		*value == '\'' ||
1617		*value == ' ' ||
1618		*value == '\t'))
1619		value++;
1620		cfg->defaultImage = strtol(value, &end, 10);
1621		while (*end && (*end == '"' || *end == '\'' ||
1622		*end == ' ' || *end == '\t'))
1623		end++;
1624		if (*end)
1625		cfg->defaultImage = NO_DEFAULT_ENTRY;
1626		} else if (defaultLine->numElements == 3) {
1627		char *value = defaultLine->elements[2].item;
1628		while (*value && (*value == '"' ||
1629		*value == '\'' ||
1630		*value == ' ' ||
1631		*value == '\t'))
1632		value++;
1633		cfg->defaultImage = strtol(value, &end, 10);
1634		while (*end && (*end == '"' || *end == '\'' ||
1635		*end == ' ' || *end == '\t'))
1636		end++;
1637		if (*end)
1638		cfg->defaultImage = NO_DEFAULT_ENTRY;
1639		}
1640		} else if (cfi->defaultSupportSaved &&
1641		!strncmp(defaultLine->elements[1].item, "saved",
1642		5)) {
1643		cfg->defaultImage = DEFAULT_SAVED;
1644		} else if (cfi->defaultIsIndex) {
1645		cfg->defaultImage =
1646		strtol(defaultLine->elements[1].item, &end, 10);
1647		if (*end)
1648		cfg->defaultImage = NO_DEFAULT_ENTRY;
1649		} else if (defaultLine->numElements >= 2) {
1650		int i = 0;
1651		while ((entry = findEntryByIndex(cfg, i))) {
1652		for (line = entry->lines; line;
1653		line = line->next)
1654		if (line->type == LT_TITLE)
1655		break;
1656
1657		if (!cfi->titleBracketed) {
1658		if (line && (line->numElements >= 2) &&
1659		!strcmp(defaultLine->elements[1].
1660		item,
1661		line->elements[1].item))
1662		break;
1663		} else if (line) {
1664		if (!strcmp
1665		(defaultLine->elements[1].item,
1666		extractTitle(cfg, line)))
1667		break;
1668		}
1669		i++;
1670		entry = NULL;
1671		}
1672
1673		if (entry) {
1674		cfg->defaultImage = i;
1675		} else {
1676		cfg->defaultImage = NO_DEFAULT_ENTRY;
1677		}
1678		}
1679		} else if (cfg->cfi->defaultIsSaved && cfg->cfi->getEnv) {
1680		char *defTitle = cfi->getEnv(cfg->cfi, "saved_entry");
1681		if (defTitle) {
1682		int index = 0;
1683		if (isnumber(defTitle)) {
1684		index = atoi(defTitle);
1685		entry = findEntryByIndex(cfg, index);
1686		} else {
1687		entry = findEntryByTitle(cfg, defTitle, &index);
1688		}
1689		if (entry)
1690		cfg->defaultImage = index;
1691		}
1692	} else {	} else {
1693	/* didn't succeed in finding a LT_ROOT, let's try LT_KERNELARGS.	cfg->defaultImage = FIRST_ENTRY_INDEX;
	* 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) 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 {
	/* it failed too...  can't find root= */
	return 0;
	}
1694	}	}
	}
1695
1696	dev = getpathbyspec(dev);	return cfg;
1697	if (!dev)	}
	return 0;
1698
1699	i = stat(dev, &sb);	static void writeDefault(FILE * out, char *indent,
1700	if (i)	char *separator, struct grubConfig *cfg)
1701	return 0;	{
1702		struct singleEntry *entry;
1703		struct singleLine *line;
1704		int i;
1705
1706		if (!cfg->defaultImage && cfg->flags == GRUB_CONFIG_NO_DEFAULT)
1707		return;
1708
1709		if (cfg->defaultImage == DEFAULT_SAVED)
1710		fprintf(out, "%sdefault%ssaved\n", indent, separator);
1711		else if (cfg->cfi->defaultIsSaved) {
1712		fprintf(out, "%sset default=\"${saved_entry}\"\n", indent);
1713		if (cfg->defaultImage >= FIRST_ENTRY_INDEX && cfg->cfi->setEnv) {
1714		char *title;
1715		int trueIndex, currentIndex;
1716
1717		trueIndex = 0;
1718		currentIndex = 0;
1719
1720		while ((entry = findEntryByIndex(cfg, currentIndex))) {
1721		if (!entry->skip) {
1722		if (trueIndex == cfg->defaultImage) {
1723		break;
1724		}
1725		trueIndex++;
1726		}
1727		currentIndex++;
1728		}
1729		line = getLineByType(LT_MENUENTRY, entry->lines);
1730		if (!line)
1731		line = getLineByType(LT_TITLE, entry->lines);
1732		if (line) {
1733		title = extractTitle(cfg, line);
1734		if (title)
1735		cfg->cfi->setEnv(cfg->cfi,
1736		"saved_entry", title);
1737		}
1738		}
1739		} else if (cfg->defaultImage >= FIRST_ENTRY_INDEX) {
1740		if (cfg->cfi->defaultIsIndex) {
1741		if (cfg->cfi->defaultIsVariable) {
1742		fprintf(out, "%sset default=\"%d\"\n", indent,
1743		cfg->defaultImage);
1744		} else {
1745		fprintf(out, "%sdefault%s%d\n", indent,
1746		separator, cfg->defaultImage);
1747		}
1748		} else {
1749		int image = cfg->defaultImage;
1750
1751	stat("/", &sb2);	entry = cfg->entries;
1752		while (entry && entry->skip)
1753		entry = entry->next;
1754
1755		i = 0;
1756		while (entry && i < image) {
1757		entry = entry->next;
1758
1759	if (sb.st_rdev != sb2.st_dev)	while (entry && entry->skip)
1760	return 0;	entry = entry->next;
1761		i++;
1762		}
1763
1764		if (!entry)
1765		return;
1766
1767		line = getLineByType(LT_TITLE, entry->lines);
1768
1769	return 1;	if (line && line->numElements >= 2)
1770		fprintf(out, "%sdefault%s%s\n", indent,
1771		separator, line->elements[1].item);
1772		else if (line && (line->numElements == 1)
1773		&& cfg->cfi->titleBracketed) {
1774		char *title = extractTitle(cfg, line);
1775		if (title) {
1776		fprintf(out, "%sdefault%s%s\n", indent,
1777		separator, title);
1778		free(title);
1779		}
1780		}
1781		}
1782		}
1783	}	}
1784
1785	/* returns the first match on or after the one pointed to by index (if index	static int writeConfig(struct grubConfig *cfg, char *outName,
1786	is not NULL) which is not marked as skip */	const char *prefix)
1787	struct singleEntry * findEntryByPath(struct grubConfig * config,	{
1788	const char * kernel, const char * prefix,	FILE *out;
1789	int * index) {	struct singleLine *line;
1790	struct singleEntry * entry = NULL;	struct singleEntry *entry;
1791	struct singleLine * line;	char *tmpOutName;
1792	int i;	int needs = MAIN_DEFAULT;
1793	char * chptr;	struct stat sb;
1794	char * rootspec = NULL;	int i;
1795	enum lineType_e checkType = LT_KERNEL;
1796		if (!strcmp(outName, "-")) {
1797		out = stdout;
1798		tmpOutName = NULL;
1799		} else {
1800		if (!lstat(outName, &sb) && S_ISLNK(sb.st_mode)) {
1801		char *buf;
1802		int len = 256;
1803		int rc;
1804
1805		/* most likely the symlink is relative, so change our
1806		directory to the dir of the symlink */
1807		char *dir = strdupa(outName);
1808		rc = chdir(dirname(dir));
1809		do {
1810		buf = alloca(len + 1);
1811		rc = readlink(basename(outName), buf, len);
1812		if (rc == len)
1813		len += 256;
1814		} while (rc == len);
1815
1816		if (rc < 0) {
1817		fprintf(stderr,
1818		_
1819		("grubby: error readlink link %s: %s\n"),
1820		outName, strerror(errno));
1821		return 1;
1822		}
1823
1824	if (isdigit(*kernel)) {	outName = buf;
1825	int * indexVars = alloca(sizeof(*indexVars) * strlen(kernel));	outName[rc] = '\0';
1826		}
1827
1828	i = 0;	tmpOutName = alloca(strlen(outName) + 2);
1829	indexVars[i] = strtol(kernel, &chptr, 10);	sprintf(tmpOutName, "%s-", outName);
1830	while (*chptr == ',') {	out = fopen(tmpOutName, "w");
1831	i++;	if (!out) {
1832	kernel = chptr + 1;	fprintf(stderr, _("grubby: error creating %s: %s\n"),
1833	indexVars[i] = strtol(kernel, &chptr, 10);	tmpOutName, strerror(errno));
1834		return 1;
1835		}
1836
1837		if (!stat(outName, &sb)) {
1838		if (chmod(tmpOutName, sb.st_mode & ~(S_IFMT))) {
1839		fprintf(stderr,
1840		_
1841		("grubby: error setting perms on %s: %s\n"),
1842		tmpOutName, strerror(errno));
1843		fclose(out);
1844		unlink(tmpOutName);
1845		return 1;
1846		}
1847		}
1848		}
1849
1850		line = cfg->theLines;
1851		struct keywordTypes *defaultKw = getKeywordByType(LT_DEFAULT, cfg->cfi);
1852		while (line) {
1853		if (line->type == LT_SET_VARIABLE && defaultKw &&
1854		line->numElements == 3 &&
1855		!strcmp(line->elements[1].item, defaultKw->key) &&
1856		!is_special_grub2_variable(line->elements[2].item)) {
1857		writeDefault(out, line->indent,
1858		line->elements[0].indent, cfg);
1859		needs &= ~MAIN_DEFAULT;
1860		} else if (line->type == LT_DEFAULT) {
1861		writeDefault(out, line->indent,
1862		line->elements[0].indent, cfg);
1863		needs &= ~MAIN_DEFAULT;
1864		} else if (line->type == LT_FALLBACK) {
1865		if (cfg->fallbackImage > -1)
1866		fprintf(out, "%s%s%s%d\n", line->indent,
1867		line->elements[0].item,
1868		line->elements[0].indent,
1869		cfg->fallbackImage);
1870		} else {
1871		if (lineWrite(out, line, cfg->cfi) == -1) {
1872		fprintf(stderr,
1873		_("grubby: error writing %s: %s\n"),
1874		tmpOutName, strerror(errno));
1875		fclose(out);
1876		unlink(tmpOutName);
1877		return 1;
1878		}
1879		}
1880
1881		line = line->next;
1882	}	}
1883
1884	if (*chptr) {	if (needs & MAIN_DEFAULT) {
1885	/* can't parse it, bail */	writeDefault(out, cfg->primaryIndent, "=", cfg);
1886	return NULL;	needs &= ~MAIN_DEFAULT;
1887	}	}
1888
	indexVars[i + 1] = -1;
1889	i = 0;	i = 0;
1890	if (index) {	while ((entry = findEntryByIndex(cfg, i++))) {
1891	while (i < *index) i++;	if (entry->skip)
1892	if (indexVars[i] == -1) return NULL;	continue;
1893
1894		line = entry->lines;
1895		while (line) {
1896		if (lineWrite(out, line, cfg->cfi) == -1) {
1897		fprintf(stderr,
1898		_("grubby: error writing %s: %s\n"),
1899		tmpOutName, strerror(errno));
1900		fclose(out);
1901		unlink(tmpOutName);
1902		return 1;
1903		}
1904		line = line->next;
1905		}
1906	}	}
1907
1908	entry = findEntryByIndex(config, indexVars[i]);	if (tmpOutName) {
1909	if (!entry) return NULL;	if (rename(tmpOutName, outName)) {
1910		fprintf(stderr,
1911		_("grubby: error moving %s to %s: %s\n"),
1912		tmpOutName, outName, strerror(errno));
1913		unlink(outName);
1914		return 1;
1915		}
1916		}
1917
1918	line = getLineByType(LT_KERNEL|LT_HYPER, entry->lines);	return 0;
1919	if (!line) return NULL;	}
1920
1921	if (index) *index = indexVars[i];	static int numEntries(struct grubConfig *cfg)
1922	return entry;	{
1923	}	int i = 0;
1924		struct singleEntry *entry;
	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;
1925
1926	while ((entry = findEntryByIndex(config, i))) {	entry = cfg->entries;
1927	if (!entry->skip) break;	while (entry) {
1928	i++;	if (!entry->skip)
1929		i++;
1930		entry = entry->next;
1931	}	}
1932		return i;
1933		}
1934
1935	if (entry && index)	static char *findDiskForRoot()
1936	*index = i;	{
1937	} else {	int fd;
1938	if (index)	char buf[65536];
1939	i = *index;	char *devname;
1940	else	char *chptr;
1941	i = 0;	int rc;
1942
1943	if (!strncmp(kernel, "TITLE=", 6)) {	if ((fd = open(_PATH_MOUNTED, O_RDONLY)) < 0) {
1944	prefix = "";	fprintf(stderr, "grubby: failed to open %s: %s\n",
1945	checkType = LT_TITLE;	_PATH_MOUNTED, strerror(errno));
1946	kernel += 6;	return NULL;
1947		}
1948
1949		rc = read(fd, buf, sizeof(buf) - 1);
1950		if (rc <= 0) {
1951		fprintf(stderr, "grubby: failed to read %s: %s\n",
1952		_PATH_MOUNTED, strerror(errno));
1953		close(fd);
1954		return NULL;
1955	}	}
1956		close(fd);
1957		buf[rc] = '\0';
1958		chptr = buf;
1959
1960	for (entry = findEntryByIndex(config, i); entry; entry = entry->next, i++) {	char *foundanswer = NULL;
	if (entry->skip) continue;
1961
1962	dbgPrintf("findEntryByPath looking for %d %s in %p\n", checkType, kernel, entry);	while (chptr && chptr != buf + rc) {
1963		devname = chptr;
1964
1965	/* check all the lines matching checkType */	/*
1966	for (line = entry->lines; line; line = line->next) {	* The first column of a mtab entry is the device, but if the
1967	line = getLineByType(entry->multiboot && checkType == LT_KERNEL ?	* entry is a special device it won't start with /, so move
1968	LT_KERNEL|LT_MBMODULE|LT_HYPER :	* on to the next line.
1969	checkType, line);	*/
1970	if (!line) break;  /* not found in this entry */	if (*devname != '/') {
1971		chptr = strchr(chptr, '\n');
1972		if (chptr)
1973		chptr++;
1974		continue;
1975		}
1976
1977	if (line && line->numElements >= 2) {	/* Seek to the next space */
1978	rootspec = getRootSpecifier(line->elements[1].item);	chptr = strchr(chptr, ' ');
1979	if (!strcmp(line->elements[1].item +	if (!chptr) {
1980	((rootspec != NULL) ? strlen(rootspec) : 0),	fprintf(stderr, "grubby: error parsing %s: %s\n",
1981	kernel + strlen(prefix)))	_PATH_MOUNTED, strerror(errno));
1982	break;	return NULL;
1983		}
1984
1985		/*
1986		* The second column of a mtab entry is the mount point, we
1987		* are looking for '/' obviously.
1988		*/
1989		if (*(++chptr) == '/' && *(++chptr) == ' ') {
1990		/* remember the last / entry in mtab */
1991		foundanswer = devname;
1992	}	}
	}
1993
1994	/* make sure this entry has a kernel identifier; this skips	/* Next line */
1995	* non-Linux boot entries (could find netbsd etc, though, which is	chptr = strchr(chptr, '\n');
1996	* unfortunate)	if (chptr)
1997	*/	chptr++;
	if (line && getLineByType(LT_KERNEL|LT_HYPER, entry->lines))
	break; /* found 'im! */
1998	}	}
1999
2000	if (index) *index = i;	/* Return the last / entry found */
2001	}	if (foundanswer) {
2002		chptr = strchr(foundanswer, ' ');
2003		*chptr = '\0';
2004		return strdup(foundanswer);
2005		}
2006
2007	return entry;	return NULL;
2008	}	}
2009
2010	struct singleEntry * findEntryByIndex(struct grubConfig * cfg, int index) {	void printEntry(struct singleEntry *entry, FILE * f)
2011	struct singleEntry * entry;	{
2012		int i;
2013		struct singleLine *line;
2014
2015	entry = cfg->entries;	for (line = entry->lines; line; line = line->next) {
2016	while (index && entry) {	log_message(f, "DBG: %s", line->indent);
2017	entry = entry->next;	for (i = 0; i < line->numElements; i++) {
2018	index--;	/* Need to handle this, because we strip the quotes from
2019	}	* menuentry when read it. */
2020		if (line->type == LT_MENUENTRY && i == 1) {
2021		if (!isquote(*line->elements[i].item))
2022		log_message(f, "\'%s\'",
2023		line->elements[i].item);
2024		else
2025		log_message(f, "%s",
2026		line->elements[i].item);
2027		log_message(f, "%s", line->elements[i].indent);
2028
2029	return entry;	continue;
2030	}	}
2031
2032	/* Find a good template to use for the new kernel. An entry is	log_message(f, "%s%s",
2033	* good if the kernel and mkinitrd exist (even if the entry	line->elements[i].item,
2034	* is going to be removed). Try and use the default entry, but	line->elements[i].indent);
2035	* if that doesn't work just take the first. If we can't find one,	}
2036	* bail. */	log_message(f, "\n");
	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;
2037	}	}
2038	}	}
2039
2040	index = 0;	void notSuitablePrintf(struct singleEntry *entry, int okay, const char *fmt,
2041	while ((entry = findEntryByIndex(cfg, index))) {	...)
2042	if (suitableImage(entry, prefix, skipRemoved, flags)) {	{
2043	int j;	static int once;
2044	for (j = 0; j < index; j++) {	va_list argp, argq;
2045	entry2 = findEntryByIndex(cfg, j);
2046	if (entry2->skip) index--;	va_start(argp, fmt);
	}
	if (indexPtr) *indexPtr = index;
2047
2048	return entry;	va_copy(argq, argp);
2049		if (!once) {
2050		log_time(NULL);
2051		log_message(NULL, "command line: %s\n", saved_command_line);
2052	}	}
2053		log_message(NULL, "DBG: Image entry %s: ",
2054		okay ? "succeeded" : "failed");
2055		log_vmessage(NULL, fmt, argq);
2056
2057	index++;	printEntry(entry, NULL);
2058	}	va_end(argq);
2059
2060		if (!debug) {
2061		once = 1;
2062		va_end(argp);
2063		return;
2064		}
2065
2066	fprintf(stderr, _("grubby fatal error: unable to find a suitable template\n"));	if (okay) {
2067		va_end(argp);
2068		return;
2069		}
2070
2071	return NULL;	if (!once)
2072		log_message(stderr, "DBG: command line: %s\n",
2073		saved_command_line);
2074		once = 1;
2075		fprintf(stderr, "DBG: Image entry failed: ");
2076		vfprintf(stderr, fmt, argp);
2077		printEntry(entry, stderr);
2078		va_end(argp);
2079	}	}
2080
2081	char * findBootPrefix(void) {	#define beginswith(s, c) ((s) && (s)[0] == (c))
	struct stat sb, sb2;
2082
2083	stat("/", &sb);	static int endswith(const char *s, char c)
2084	#ifdef __ia64__	{
2085	stat("/boot/efi/EFI/redhat/", &sb2);	int slen;
	#else
	stat("/boot", &sb2);
	#endif
2086
2087	if (sb.st_dev == sb2.st_dev)	if (!s || !s[0])
2088	return strdup("");	return 0;
2089		slen = strlen(s) - 1;
2090
2091	#ifdef __ia64__	return s[slen] == c;
	return strdup("/boot/efi/EFI/redhat/");
	#else
	return strdup("/boot");
	#endif
2092	}	}
2093
2094	void markRemovedImage(struct grubConfig * cfg, const char * image,	int suitableImage(struct singleEntry *entry, const char *bootPrefix,
2095	const char * prefix) {	int skipRemoved, int flags)
2096	struct singleEntry * entry;	{
2097		struct singleLine *line;
2098	if (!image) return;	char *fullName;
2099		int i;
2100	while ((entry = findEntryByPath(cfg, image, prefix, NULL)))	char *dev;
2101	entry->skip = 1;	char *rootspec;
2102	}	char *rootdev;
2103
2104	void setDefaultImage(struct grubConfig * config, int hasNew,	if (skipRemoved && entry->skip) {
2105	const char * defaultKernelPath, int newIsDefault,	notSuitablePrintf(entry, 0, "marked to skip\n");
2106	const char * prefix, int flags) {	return 0;
2107	struct singleEntry * entry, * entry2, * newDefault;	}
2108	int i, j;
2109		line =
2110	if (newIsDefault) {	getLineByType(LT_KERNEL | LT_HYPER | LT_KERNEL_EFI | LT_KERNEL_16,
2111	config->defaultImage = 0;	entry->lines);
2112	return;	if (!line) {
2113	} else if (defaultKernelPath) {	notSuitablePrintf(entry, 0, "no line found\n");
2114	i = 0;	return 0;
2115	if (findEntryByPath(config, defaultKernelPath, prefix, &i)) {	}
2116	config->defaultImage = i;	if (line->numElements < 2) {
2117	} else {	notSuitablePrintf(entry, 0, "line has only %d elements\n",
2118	config->defaultImage = -1;	line->numElements);
2119	return;	return 0;
2120	}	}
	}
2121
2122	/* defaultImage now points to what we'd like to use, but before any order	if (flags & GRUBBY_BADIMAGE_OKAY) {
2123	changes */	notSuitablePrintf(entry, 1, "\n");
2124	if (config->defaultImage == DEFAULT_SAVED)	return 1;
2125	/* 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;
2126
2127	if (entry && !entry->skip) {	fullName = alloca(strlen(bootPrefix) +
2128	/* we can preserve the default */	strlen(line->elements[1].item) + 1);
2129	if (hasNew)	rootspec = getRootSpecifier(line->elements[1].item);
2130	config->defaultImage++;	int rootspec_offset = rootspec ? strlen(rootspec) : 0;
2131		int hasslash = endswith(bootPrefix, '/') ||
2132	/* count the number of entries erased before this one */	beginswith(line->elements[1].item + rootspec_offset, '/');
2133	for (j = 0; j < config->defaultImage; j++) {	sprintf(fullName, "%s%s%s", bootPrefix, hasslash ? "" : "/",
2134	entry2 = findEntryByIndex(config, j);	line->elements[1].item + rootspec_offset);
2135	if (entry2->skip) config->defaultImage--;	if (access(fullName, R_OK)) {
2136	}	notSuitablePrintf(entry, 0, "access to %s failed\n", fullName);
2137	} else if (hasNew) {	return 0;
2138	config->defaultImage = 0;	}
2139	} else {	for (i = 2; i < line->numElements; i++)
2140	/* Either we just erased the default (or the default line was bad	if (!strncasecmp(line->elements[i].item, "root=", 5))
2141	* to begin with) and didn't put a new one in. We'll use the first	break;
2142	* valid image. */	if (i < line->numElements) {
2143	newDefault = findTemplate(config, prefix, &config->defaultImage, 1,	dev = line->elements[i].item + 5;
2144	flags);	} else {
2145	if (!newDefault)	/* look for a lilo style LT_ROOT line */
2146	config->defaultImage = -1;	line = getLineByType(LT_ROOT, entry->lines);
	}
	}
2147
2148	void setFallbackImage(struct grubConfig * config, int hasNew) {	if (line && line->numElements >= 2) {
2149	struct singleEntry * entry, * entry2;	dev = line->elements[1].item;
2150	int j;	} else {
2151		/* didn't succeed in finding a LT_ROOT, let's try
2152	if (config->fallbackImage == -1) return;	* LT_KERNELARGS.  grub+multiboot uses LT_MBMODULE
2153		* for the args, so check that too.
2154	entry = findEntryByIndex(config, config->fallbackImage);	*/
2155	if (!entry || entry->skip) {	line =
2156	config->fallbackImage = -1;	getLineByType(LT_KERNELARGS | LT_MBMODULE,
2157	return;	entry->lines);
2158	}
2159		/* failed to find one */
2160		if (!line) {
2161		notSuitablePrintf(entry, 0, "no line found\n");
2162		return 0;
2163		}
2164
2165	if (hasNew)	for (i = 1; i < line->numElements; i++)
2166	config->fallbackImage++;	if (!strncasecmp
2167		(line->elements[i].item, "root=", 5))
2168	/* count the number of entries erased before this one */	break;
2169	for (j = 0; j < config->fallbackImage; j++) {	if (i < line->numElements)
2170	entry2 = findEntryByIndex(config, j);	dev = line->elements[i].item + 5;
2171	if (entry2->skip) config->fallbackImage--;	else {
2172	}	notSuitablePrintf(entry, 0,
2173		"no root= entry found\n");
2174		/* it failed too...  can't find root= */
2175		return 0;
2176		}
2177		}
2178		}
2179
2180		dev = getpathbyspec(dev);
2181		if (!getpathbyspec(dev)) {
2182		notSuitablePrintf(entry, 0, "can't find blkid entry for %s\n",
2183		dev);
2184		return 0;
2185		} else
2186		dev = getpathbyspec(dev);
2187
2188		rootdev = findDiskForRoot();
2189		if (!rootdev) {
2190		notSuitablePrintf(entry, 0, "can't find root device\n");
2191		return 0;
2192		}
2193
2194		if (!getuuidbydev(rootdev) || !getuuidbydev(dev)) {
2195		notSuitablePrintf(entry, 0,
2196		"uuid missing: rootdev %s, dev %s\n",
2197		getuuidbydev(rootdev), getuuidbydev(dev));
2198		free(rootdev);
2199		return 0;
2200		}
2201
2202		if (strcmp(getuuidbydev(rootdev), getuuidbydev(dev))) {
2203		notSuitablePrintf(entry, 0,
2204		"uuid mismatch: rootdev %s, dev %s\n",
2205		getuuidbydev(rootdev), getuuidbydev(dev));
2206		free(rootdev);
2207		return 0;
2208		}
2209
2210		free(rootdev);
2211		notSuitablePrintf(entry, 1, "\n");
2212
2213		return 1;
2214	}	}
2215
2216	void displayEntry(struct singleEntry * entry, const char * prefix, int index) {	/* returns the first match on or after the one pointed to by index (if index
2217	struct singleLine * line;	is not NULL) which is not marked as skip */
2218	char * root = NULL;	struct singleEntry *findEntryByPath(struct grubConfig *config,
2219	int i;	const char *kernel, const char *prefix,
2220		int *index)
2221	printf("index=%d\n", index);	{
2222		struct singleEntry *entry = NULL;
2223	line = getLineByType(LT_KERNEL|LT_HYPER, entry->lines);	struct singleLine *line;
2224	if (!line) {	int i;
2225	printf("non linux entry\n");	char *chptr;
2226	return;	char *rootspec = NULL;
2227	}	enum lineType_e checkType = LT_KERNEL;
2228
2229		if (isdigit(*kernel)) {
2230		int *indexVars = alloca(sizeof(*indexVars) * strlen(kernel));
2231
2232		i = 0;
2233		indexVars[i] = strtol(kernel, &chptr, 10);
2234		while (*chptr == ',') {
2235		i++;
2236		kernel = chptr + 1;
2237		indexVars[i] = strtol(kernel, &chptr, 10);
2238		}
2239
2240	printf("kernel=%s\n", line->elements[1].item);	if (*chptr) {
2241		/* can't parse it, bail */
2242		return NULL;
2243		}
2244
2245	if (line->numElements >= 3) {	indexVars[i + 1] = -1;
	printf("args=\"");
	i = 2;
	while (i < line->numElements) {
	if (!strncmp(line->elements[i].item, "root=", 5)) {
	root = line->elements[i].item + 5;
	} else {
	printf("%s%s", line->elements[i].item,
	line->elements[i].indent);
	}
2246
2247	i++;	i = 0;
2248	}	if (index) {
2249	printf("\"\n");	while (i < *index) {
2250	} else {	i++;
2251	line = getLineByType(LT_KERNELARGS, entry->lines);	if (indexVars[i] == -1)
2252	if (line) {	return NULL;
2253	char * s;	}
2254		}
2255
2256	printf("args=\"");	entry = findEntryByIndex(config, indexVars[i]);
2257	i = 1;	if (!entry)
2258	while (i < line->numElements) {	return NULL;
2259	if (!strncmp(line->elements[i].item, "root=", 5)) {
2260	root = line->elements[i].item + 5;	line =
2261		getLineByType(LT_KERNEL | LT_HYPER | LT_KERNEL_EFI |
2262		LT_KERNEL_16, entry->lines);
2263		if (!line)
2264		return NULL;
2265
2266		if (index)
2267		*index = indexVars[i];
2268		return entry;
2269		}
2270
2271		if (!strcmp(kernel, "DEFAULT")) {
2272		if (index && *index > config->defaultImage) {
2273		entry = NULL;
2274	} else {	} else {
2275	s = line->elements[i].item;	entry = findEntryByIndex(config, config->defaultImage);
2276		if (entry && entry->skip)
2277		entry = NULL;
2278		else if (index)
2279		*index = config->defaultImage;
2280		}
2281		} else if (!strcmp(kernel, "ALL")) {
2282		if (index)
2283		i = *index;
2284		else
2285		i = 0;
2286
2287		while ((entry = findEntryByIndex(config, i))) {
2288		if (!entry->skip)
2289		break;
2290		i++;
2291		}
2292
2293	printf("%s%s", s, line->elements[i].indent);	if (entry && index)
2294		*index = i;
2295		} else {
2296		if (index)
2297		i = *index;
2298		else
2299		i = 0;
2300
2301		if (!strncmp(kernel, "TITLE=", 6)) {
2302		prefix = "";
2303		checkType = LT_TITLE | LT_MENUENTRY;
2304		kernel += 6;
2305	}	}
2306
2307	i++;	for (entry = findEntryByIndex(config, i); entry;
2308	}	entry = entry->next, i++) {
2309		if (entry->skip)
2310		continue;
2311
2312		dbgPrintf("findEntryByPath looking for %d %s in %p\n",
2313		checkType, kernel, entry);
2314
2315		/* check all the lines matching checkType */
2316		for (line = entry->lines; line; line = line->next) {
2317		enum lineType_e ct = checkType;
2318		if (entry->multiboot && checkType == LT_KERNEL)
2319		ct = LT_KERNEL | LT_KERNEL_EFI |
2320		LT_MBMODULE | LT_HYPER |
2321		LT_KERNEL_16;
2322		else if (checkType & LT_KERNEL)
2323		ct = checkType | LT_KERNEL_EFI |
2324		LT_KERNEL_16;
2325		line = getLineByType(ct, line);
2326		if (!line)
2327		break; /* not found in this entry */
2328
2329		if (line && line->type != LT_MENUENTRY &&
2330		line->numElements >= 2) {
2331		rootspec =
2332		getRootSpecifier(line->elements[1].
2333		item);
2334		if (!strcmp
2335		(line->elements[1].item +
2336		((rootspec !=
2337		NULL) ? strlen(rootspec) : 0),
2338		kernel + strlen(prefix)))
2339		break;
2340		}
2341		if (line->type == LT_MENUENTRY &&
2342		!strcmp(line->elements[1].item, kernel))
2343		break;
2344		}
2345
2346		/* make sure this entry has a kernel identifier; this skips
2347		* non-Linux boot entries (could find netbsd etc, though, which is
2348		* unfortunate)
2349		*/
2350		if (line
2351		&& getLineByType(LT_KERNEL | LT_HYPER |
2352		LT_KERNEL_EFI | LT_KERNEL_16,
2353		entry->lines))
2354		break; /* found 'im! */
2355		}
2356
2357	s = line->elements[i - 1].indent;	if (index)
2358	printf("\"\n");	*index = i;
2359	}	}
	}
2360
2361	if (!root) {	return entry;
2362	line = getLineByType(LT_ROOT, entry->lines);	}
	if (line && line->numElements >= 2)
	root=line->elements[1].item;
	}
2363
2364	if (root) {	struct singleEntry *findEntryByTitle(struct grubConfig *cfg, char *title,
2365	char * s = alloca(strlen(root) + 1);	int *index)
2366		{
2367	strcpy(s, root);	struct singleEntry *entry;
2368	if (s[strlen(s) - 1] == '"')	struct singleLine *line;
2369	s[strlen(s) - 1] = '\0';	int i;
2370	/* make sure the root doesn't have a trailing " */	char *newtitle;
2371	printf("root=%s\n", s);
2372	}	for (i = 0, entry = cfg->entries; entry; entry = entry->next, i++) {
2373		if (index && i < *index)
2374		continue;
2375		line = getLineByType(LT_TITLE, entry->lines);
2376		if (!line)
2377		line = getLineByType(LT_MENUENTRY, entry->lines);
2378		if (!line)
2379		continue;
2380		newtitle = grub2ExtractTitle(line);
2381		if (!newtitle)
2382		continue;
2383		if (!strcmp(title, newtitle))
2384		break;
2385		}
2386
2387	line = getLineByType(LT_INITRD, entry->lines);	if (!entry)
2388		return NULL;
2389
2390	if (line && line->numElements >= 2) {	if (index)
2391	printf("initrd=%s", prefix);	*index = i;
2392	for (i = 1; i < line->numElements; i++)	return entry;
	printf("%s%s", line->elements[i].item, line->elements[i].indent);
	printf("\n");
	}
2393	}	}
2394
2395	int parseSysconfigGrub(int * lbaPtr, char ** bootPtr) {	struct singleEntry *findEntryByIndex(struct grubConfig *cfg, int index)
2396	FILE * in;	{
2397	char buf[1024];	struct singleEntry *entry;
	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);
	}
	fclose(in);
2398
2399	return 0;	entry = cfg->entries;
2400	}	while (index && entry) {
2401		entry = entry->next;
2402		index--;
2403		}
2404
2405	void dumpSysconfigGrub(void) {	return entry;
	char * boot;
	int lba;
	if (!parseSysconfigGrub(&lba, &boot)) {
	if (lba) printf("lba\n");
	if (boot) printf("boot=%s\n", boot);
	}
2406	}	}
2407
2408	int displayInfo(struct grubConfig * config, char * kernel,	/* Find a good template to use for the new kernel. An entry is
2409	const char * prefix) {	* good if the kernel and mkinitrd exist (even if the entry
2410	int i = 0;	* is going to be removed). Try and use the default entry, but
2411	struct singleEntry * entry;	* if that doesn't work just take the first. If we can't find one,
2412	struct singleLine * line;	* bail. */
2413		struct singleEntry *findTemplate(struct grubConfig *cfg, const char *prefix,
2414	entry = findEntryByPath(config, kernel, prefix, &i);	int *indexPtr, int skipRemoved, int flags)
2415	if (!entry) {	{
2416	fprintf(stderr, _("grubby: kernel not found\n"));	struct singleEntry *entry, *entry2;
2417	return 1;	int index;
	}
2418
2419	/* this is a horrible hack to support /etc/conf.d/grub; there must	if (cfg->cfi->defaultIsSaved) {
2420	be a better way */	if (cfg->cfi->getEnv) {
2421	if (config->cfi == &grubConfigType) {	char *defTitle =
2422	dumpSysconfigGrub();	cfg->cfi->getEnv(cfg->cfi, "saved_entry");
2423	} else {	if (defTitle) {
2424	line = getLineByType(LT_BOOT, config->theLines);	int index = 0;
2425	if (line && line->numElements >= 1) {	if (isnumber(defTitle)) {
2426	printf("boot=%s\n", line->elements[1].item);	index = atoi(defTitle);
2427		entry = findEntryByIndex(cfg, index);
2428		} else {
2429		entry =
2430		findEntryByTitle(cfg, defTitle,
2431		&index);
2432		}
2433		if (entry
2434		&& suitableImage(entry, prefix, skipRemoved,
2435		flags)) {
2436		cfg->defaultImage = index;
2437		if (indexPtr)
2438		*indexPtr = index;
2439		return entry;
2440		}
2441		}
2442		}
2443		} else if (cfg->defaultImage >= FIRST_ENTRY_INDEX) {
2444		entry = findEntryByIndex(cfg, cfg->defaultImage);
2445		if (entry && suitableImage(entry, prefix, skipRemoved, flags)) {
2446		if (indexPtr)
2447		*indexPtr = cfg->defaultImage;
2448		return entry;
2449		}
2450	}	}
2451
2452	line = getLineByType(LT_LBA, config->theLines);	index = 0;
2453	if (line) printf("lba\n");	while ((entry = findEntryByIndex(cfg, index))) {
2454	}	if (suitableImage(entry, prefix, skipRemoved, flags)) {
2455		int j, unmodifiedIndex;
2456	displayEntry(entry, prefix, i);
2457		unmodifiedIndex = index;
2458	i++;
2459	while ((entry = findEntryByPath(config, kernel, prefix, &i))) {	for (j = 0; j < unmodifiedIndex; j++) {
2460	displayEntry(entry, prefix, i);	entry2 = findEntryByIndex(cfg, j);
2461	i++;	if (entry2->skip)
2462	}	index--;
2463		}
2464		if (indexPtr)
2465		*indexPtr = index;
2466
2467	return 0;	return entry;
2468	}	}
2469
2470	struct singleLine * addLineTmpl(struct singleEntry * entry,	index++;
	struct singleLine * tmplLine,
	struct singleLine * prevLine,
	const char * val,
	struct configFileInfo * cfi)
	{
	struct singleLine * newLine = lineDup(tmplLine);
	if (val) {
	/* override the inherited value with our own.
	* This is a little weak because it only applies to elements[1]
	*/
	if (newLine->numElements > 1)
	removeElement(newLine, 1);
	insertElement(newLine, val, 1, cfi);
	/* but try to keep the rootspec from the template... sigh */
	if (tmplLine->type & (LT_HYPER|LT_KERNEL|LT_MBMODULE|LT_INITRD)) {
	char * rootspec = getRootSpecifier(tmplLine->elements[1].item);
	if (rootspec != NULL) {
	free(newLine->elements[1].item);
	newLine->elements[1].item =
	sdupprintf("%s%s", rootspec, val);
	}
2471	}	}
	}
2472
2473	dbgPrintf("addLineTmpl(%s)\n", newLine->numElements ?	fprintf(stderr,
2474	newLine->elements[0].item : "");	_("grubby fatal error: unable to find a suitable template\n"));
	if (!entry->lines) {
	/* first one on the list */
	entry->lines = newLine;
	} else if (prevLine) {
	/* add after prevLine */
	newLine->next = prevLine->next;
	prevLine->next = newLine;
	}
2475
2476	return newLine;	return NULL;
2477	}	}
2478
2479	/* val may be NULL */	char *findBootPrefix(void)
2480	struct singleLine *  addLine(struct singleEntry * entry,	{
2481	struct configFileInfo * cfi,	struct stat sb, sb2;
	enum lineType_e type, char * defaultIndent,
	const char * val) {
	struct singleLine * line, * prev;
	struct keywordTypes * kw;
	struct singleLine tmpl;
	/* NB: This function shouldn't allocate items on the heap, rather on the
	* stack since it calls addLineTmpl which will make copies.
	*/
	if (type == LT_TITLE && cfi->titleBracketed) {
	/* we're doing a bracketed title (zipl) */
	tmpl.type = type;
	tmpl.numElements = 1;
	tmpl.elements = alloca(sizeof(*tmpl.elements));
	tmpl.elements[0].item = alloca(strlen(val)+3);
	sprintf(tmpl.elements[0].item, "[%s]", val);
	tmpl.elements[0].indent = "";
	val = NULL;
	} else {
	kw = getKeywordByType(type, cfi);
	if (!kw) 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 = "";
	}
	}
2482
2483	/* The last non-empty line gives us the indention to us and the line	stat("/", &sb);
2484	to insert after. Note that comments are considered empty lines, which	#ifdef __ia64__
2485	may not be ideal? If there are no lines or we are looking at the	stat("/boot/efi/EFI/redhat/", &sb2);
2486	first line, we use defaultIndent (the first line is normally indented	#else
2487	differently from the rest) */	stat("/boot", &sb2);
2488	for (line = entry->lines, prev = NULL; line; line = line->next) {	#endif
	if (line->numElements) prev = line;
	/* fall back on the last line if prev isn't otherwise set */
	if (!line->next && !prev) prev = line;
	}
2489
2490	if (prev == entry->lines)	if (sb.st_dev == sb2.st_dev)
2491	tmpl.indent = defaultIndent ?: "";	return strdup("");
	else
	tmpl.indent = prev->indent;
2492
2493	return addLineTmpl(entry, &tmpl, prev, val, cfi);	#ifdef __ia64__
2494		return strdup("/boot/efi/EFI/redhat/");
2495		#else
2496		return strdup("/boot");
2497		#endif
2498	}	}
2499
2500	void removeLine(struct singleEntry * entry, struct singleLine * line) {	void markRemovedImage(struct grubConfig *cfg, const char *image,
2501	struct singleLine * prev;	const char *prefix)
2502	int i;	{
2503		struct singleEntry *entry;
2504
2505	for (i = 0; i < line->numElements; i++) {	if (!image)
2506	free(line->elements[i].item);	return;
	free(line->elements[i].indent);
	}
	free(line->elements);
	free(line->indent);
2507
2508	if (line == entry->lines) {	/* check and see if we're removing the default image */
2509	entry->lines = line->next;	if (isdigit(*image)) {
2510	} else {	entry = findEntryByPath(cfg, image, prefix, NULL);
2511	prev = entry->lines;	if (entry)
2512	while (prev->next != line) prev = prev->next;	entry->skip = 1;
2513	prev->next = line->next;	return;
2514	}	}
2515
2516	free(line);	while ((entry = findEntryByPath(cfg, image, prefix, NULL)))
2517		entry->skip = 1;
2518	}	}
2519
2520	static void insertElement(struct singleLine * line,	void setDefaultImage(struct grubConfig *config, int isAddingBootEntry,
2521	const char * item, int insertHere,	const char *defaultKernelPath, int newBootEntryIsDefault,
2522	struct configFileInfo * cfi)	const char *prefix, int flags,
2523		int newDefaultBootEntryIndex, int newBootEntryIndex)
2524	{	{
2525	struct keywordTypes * kw;	struct singleEntry *bootEntry, *newDefault;
2526	char indent[2] = "";	int indexToVerify, firstKernelEntryIndex, currentLookupIndex;
2527
2528	/* sanity check */	/* initialize */
2529	if (insertHere > line->numElements) {	currentLookupIndex = FIRST_ENTRY_INDEX;
	dbgPrintf("insertElement() adjusting insertHere from %d to %d\n",
	insertHere, line->numElements);
	insertHere = line->numElements;
	}
2530
2531	line->elements = realloc(line->elements, (line->numElements + 1) *	/* handle the two cases where the user explictly picks the default
2532	sizeof(*line->elements));	* boot entry index as it would exist post-modification */
	memmove(&line->elements[insertHere+1],
	&line->elements[insertHere],
	(line->numElements - insertHere) *
	sizeof(*line->elements));
	line->elements[insertHere].item = strdup(item);
	kw = getKeywordByType(line->type, cfi);
	if (line->numElements == 0) {
	indent[0] = '\0';
	} else if (insertHere == 0) {
	indent[0] = kw->nextChar;
	} else if (kw->separatorChar != '\0') {
	indent[0] = kw->separatorChar;
	} else {
	indent[0] = ' ';
	}
2533
2534	if (insertHere > 0 && line->elements[insertHere-1].indent[0] == '\0') {	/* Case 1: user chose to make the latest boot entry the default */
2535	/* move the end-of-line forward */	if (newBootEntryIsDefault) {
2536	line->elements[insertHere].indent =	config->defaultImage = newBootEntryIndex;
2537	line->elements[insertHere-1].indent;	return;
2538	line->elements[insertHere-1].indent = strdup(indent);	}
	} else {
	line->elements[insertHere].indent = strdup(indent);
	}
2539
2540	line->numElements++;	/* Case 2: user picked an arbitrary index as the default boot entry */
2541		if (newDefaultBootEntryIndex >= FIRST_ENTRY_INDEX) {
2542		indexToVerify = newDefaultBootEntryIndex;
2543
2544	dbgPrintf("insertElement(%s, '%s%s', %d)\n",	/* user chose to make latest boot entry the default */
2545	line->elements[0].item,	if (newDefaultBootEntryIndex == newBootEntryIndex) {
2546	line->elements[insertHere].item,	config->defaultImage = newBootEntryIndex;
2547	line->elements[insertHere].indent,	return;
2548	insertHere);	}
	}
2549
2550	static void removeElement(struct singleLine * line, int removeHere) {	/* the user picks the default index based on the
2551	int i;	* order of the bootloader configuration after
2552		* modification; ensure we are checking for the
2553		* existence of the correct entry */
2554		if (newBootEntryIndex < newDefaultBootEntryIndex) {
2555		if (!config->isModified)
2556		indexToVerify--;
2557		}
2558
2559	/* sanity check */	/* verify the user selected index will exist */
2560	if (removeHere >= line->numElements) return;	if (findEntryByIndex(config, indexToVerify)) {
2561		config->defaultImage = newDefaultBootEntryIndex;
2562		} else {
2563		config->defaultImage = NO_DEFAULT_ENTRY;
2564		}
2565
2566	dbgPrintf("removeElement(%s, %d:%s)\n", line->elements[0].item,	return;
2567	removeHere, line->elements[removeHere].item);	}
2568
2569	free(line->elements[removeHere].item);	/* handle cases where the index value may shift */
2570
2571	if (removeHere > 1) {	/* check validity of existing default or first-entry-found
2572	/* previous argument gets this argument's post-indentation */	selection */
2573	free(line->elements[removeHere-1].indent);	if (defaultKernelPath) {
2574	line->elements[removeHere-1].indent =	/* we must initialize this */
2575	line->elements[removeHere].indent;	firstKernelEntryIndex = 0;
2576	} else {	/* user requested first-entry-found */
2577	free(line->elements[removeHere].indent);	if (!findEntryByPath(config, defaultKernelPath,
2578	}	prefix, &firstKernelEntryIndex)) {
2579		/* don't change default if can't find match */
2580		config->defaultImage = NO_DEFAULT_ENTRY;
2581		return;
2582		}
2583
2584	/* now collapse the array, but don't bother to realloc smaller */	config->defaultImage = firstKernelEntryIndex;
	for (i = removeHere; i < line->numElements - 1; i++)
	line->elements[i] = line->elements[i + 1];
	line->numElements--;
	}
	int argMatch(const char * one, const char * two) {
	char * first, * second;
	char * chptr;
	first = strcpy(alloca(strlen(one) + 1), one);
	second = strcpy(alloca(strlen(two) + 1), two);
	chptr = strchr(first, '=');
	if (chptr) *chptr = '\0';
	chptr = strchr(second, '=');
	if (chptr) *chptr = '\0';
	return strcmp(first, second);
	}
	int updateActualImage(struct grubConfig * cfg, const char * image,
	const char * prefix, const char * addArgs,
	const char * removeArgs, int multibootArgs) {
	struct singleEntry * entry;
	struct singleLine * line, * rootLine;
	int index = 0;
	int i, k;
	const char ** newArgs, ** oldArgs;
	const char ** arg;
	int useKernelArgs, useRoot;
	int firstElement;
	int *usedElements, *usedArgs;
	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;
	}
	}
	if (!removeArgs) {
	oldArgs = malloc(sizeof(*oldArgs));
	*oldArgs = NULL;
	} else {
	if (poptParseArgvString(removeArgs, NULL, &oldArgs)) {
	fprintf(stderr,
	_("grubby: error separating arguments '%s'\n"), removeArgs);
	free(newArgs);
	return 1;
	}
	}
2585
2586		/* this is where we start looking for decrement later */
2587		currentLookupIndex = config->defaultImage;
2588
2589	useKernelArgs = (getKeywordByType(LT_KERNELARGS, cfg->cfi)	if (isAddingBootEntry && !config->isModified &&
2590	&& (!multibootArgs || cfg->cfi->mbConcatArgs));	(newBootEntryIndex < config->defaultImage)) {
2591		/* increment because new entry added before default */
2592		config->defaultImage++;
2593		}
2594		} else {
2595		/* check to see if the default is stored in the environment */
2596		if (config->defaultImage < FIRST_ENTRY_INDEX) {
2597		if (config->defaultImage == DEFAULT_SAVED || config->defaultImage == DEFAULT_SAVED_GRUB2)
2598		{
2599		if (config->cfi->defaultIsSaved) {
2600		if (config->cfi->getEnv) {
2601		char *defaultTitle = config->cfi->getEnv(config->cfi, "saved_entry");
2602
2603		if (defaultTitle) {
2604		if (isnumber(defaultTitle)) {
2605		currentLookupIndex = atoi(defaultTitle);
2606		} else {
2607		findEntryByTitle(config, defaultTitle, &currentLookupIndex);
2608		}
2609		/* set the default Image to an actual index */
2610		config->defaultImage = currentLookupIndex;
2611		}
2612		}
2613		}
2614		}
2615		} else {
2616		/* use pre-existing default entry from the file*/
2617		currentLookupIndex = config->defaultImage;
2618		}
2619
2620	useRoot = (getKeywordByType(LT_ROOT, cfg->cfi)	if (isAddingBootEntry
2621	&& !multibootArgs);	&& (newBootEntryIndex <= config->defaultImage)) {
2622		config->defaultImage++;
2623
2624	for (k = 0, arg = newArgs; *arg; arg++, k++) ;	if (config->isModified) {
2625	usedArgs = calloc(k, sizeof(*usedArgs));	currentLookupIndex++;
2626		}
2627		}
2628		}
2629
2630	for (; (entry = findEntryByPath(cfg, image, prefix, &index)); index++) {	/* sanity check - is this entry index valid? */
2631		bootEntry = findEntryByIndex(config, currentLookupIndex);
2632
2633	if (multibootArgs && !entry->multiboot)	if ((bootEntry && bootEntry->skip) || !bootEntry) {
2634	continue;	/* entry is to be skipped or is invalid */
2635		if (isAddingBootEntry) {
2636		config->defaultImage = newBootEntryIndex;
2637		return;
2638		}
2639		newDefault =
2640		findTemplate(config, prefix, &config->defaultImage, 1,
2641		flags);
2642		if (!newDefault) {
2643		config->defaultImage = NO_DEFAULT_ENTRY;
2644		}
2645
2646	/* Determine where to put the args.  If this config supports	return;
	* LT_KERNELARGS, use that.  Otherwise use
	* LT_HYPER/LT_KERNEL/LT_MBMODULE lines.
	*/
	if (useKernelArgs) {
	line = getLineByType(LT_KERNELARGS, entry->lines);
	if (!line) {
	/* no LT_KERNELARGS, need to add it */
	line = addLine(entry, cfg->cfi, LT_KERNELARGS,
	cfg->secondaryIndent, NULL);
	}
	firstElement = 1;
	} else if (multibootArgs) {
	line = getLineByType(LT_HYPER, entry->lines);
	if (!line) {
	/* a multiboot entry without LT_HYPER? */
	continue;
	}
	firstElement = 2;
	} else {
	line = getLineByType(LT_KERNEL|LT_MBMODULE, entry->lines);
	if (!line) {
	/* no LT_KERNEL or LT_MBMODULE in this entry? */
	continue;
	}
	firstElement = 2;
2647	}	}
2648
2649	/* handle the elilo case which does:	currentLookupIndex--;
	*   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++) {
	if (usedArgs[k]) continue;
	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;
	usedArgs[k]=1;
	break;
	}
	}
2650
2651	if (i < line->numElements && doreplace) {	/* decrement index by the total number of entries deleted */
	/* direct replacement */
	free(line->elements[i].item);
	line->elements[i].item = strdup(*arg);
2652
2653	} else if (useRoot && !strncmp(*arg, "root=/dev/", 10)) {	for (indexToVerify = currentLookupIndex;
2654	/* root= replacement */	indexToVerify >= FIRST_ENTRY_INDEX; indexToVerify--) {
2655	rootLine = getLineByType(LT_ROOT, entry->lines);
2656	if (rootLine) {	bootEntry = findEntryByIndex(config, indexToVerify);
2657	free(rootLine->elements[1].item);
2658	rootLine->elements[1].item = strdup(*arg + 5);	if (bootEntry && bootEntry->skip) {
2659	} else {	config->defaultImage--;
	rootLine = addLine(entry, cfg->cfi, LT_ROOT,
	cfg->secondaryIndent, *arg + 5);
2660	}	}
2661	}	}
2662		}
2663
2664		void setFallbackImage(struct grubConfig *config, int hasNew)
2665		{
2666		struct singleEntry *entry, *entry2;
2667		int j;
2668
2669		if (config->fallbackImage == -1)
2670		return;
2671
2672	else {	entry = findEntryByIndex(config, config->fallbackImage);
2673	/* insert/append */	if (!entry || entry->skip) {
2674	insertElement(line, *arg, i, cfg->cfi);	config->fallbackImage = -1;
2675	usedElements = realloc(usedElements, line->numElements *	return;
	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);
2676	}	}
	}
2677
2678	free(usedArgs);	if (hasNew)
2679	free(newArgs);	config->fallbackImage++;
	free(oldArgs);
2680
2681	return 0;	/* count the number of entries erased before this one */
2682		for (j = 0; j < config->fallbackImage; j++) {
2683		entry2 = findEntryByIndex(config, j);
2684		if (entry2->skip)
2685		config->fallbackImage--;
2686		}
2687	}	}
2688
2689	int updateImage(struct grubConfig * cfg, const char * image,	void displayEntry(struct grubConfig *config, struct singleEntry *entry, const char *prefix, int index)
2690	const char * prefix, const char * addArgs,	{
2691	const char * removeArgs,	struct singleLine *line;
2692	const char * addMBArgs, const char * removeMBArgs) {	char *root = NULL;
2693	int rc = 0;	int i;
2694		int j;
	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 checkDeviceBootloader(const char * device, const unsigned char * boot) {
	int fd;
	unsigned char bootSect[512];
	int offset;
	fd = open(device, O_RDONLY);
	if (fd < 0) {
	fprintf(stderr, _("grubby: unable to open %s: %s\n"),
	device, strerror(errno));
	return 1;
	}
2695
2696	if (read(fd, bootSect, 512) != 512) {	printf("index=%d\n", index);
	fprintf(stderr, _("grubby: unable to read %s: %s\n"),
	device, strerror(errno));
	return 1;
	}
	close(fd);
2697
2698	/* first three bytes should match, a jmp short should be in there */	line =
2699	if (memcmp(boot, bootSect, 3))	getLineByType(LT_KERNEL | LT_HYPER | LT_KERNEL_EFI | LT_KERNEL_16,
2700	return 0;	entry->lines);
2701		if (!line) {
2702		printf("non linux entry\n");
2703		return;
2704		}
2705
2706	if (boot[1] == 0xeb) {	if (!strncmp(prefix, line->elements[1].item, strlen(prefix)))
2707	offset = boot[2] + 2;	printf("kernel=%s\n", line->elements[1].item);
2708	} else if (boot[1] == 0xe8 || boot[1] == 0xe9) {	else
2709	offset = (boot[3] << 8) + boot[2] + 2;	printf("kernel=%s%s\n", prefix, line->elements[1].item);
	} else if (boot[0] == 0xeb) {
	offset = boot[1] + 2;
	} else if (boot[0] == 0xe8 || boot[0] == 0xe9) {
	offset = (boot[2] << 8) + boot[1] + 2;
	} else {
	return 0;
	}
2710
2711	if (memcmp(boot + offset, bootSect + offset, CODE_SEG_SIZE))	if (line->numElements >= 3) {
2712	return 0;	printf("args=\"");
2713		i = 2;
2714		while (i < line->numElements) {
2715		if (!strncmp(line->elements[i].item, "root=", 5)) {
2716		root = line->elements[i].item + 5;
2717		} else {
2718		printf("%s%s", line->elements[i].item,
2719		line->elements[i].indent);
2720		}
2721
2722	return 2;	i++;
2723	}	}
2724		printf("\"\n");
2725		} else {
2726		line = getLineByType(LT_KERNELARGS, entry->lines);
2727		if (line) {
2728		char *s;
2729
2730		printf("args=\"");
2731		i = 1;
2732		while (i < line->numElements) {
2733		if (!strncmp
2734		(line->elements[i].item, "root=", 5)) {
2735		root = line->elements[i].item + 5;
2736		} else {
2737		s = line->elements[i].item;
2738
2739	int checkLiloOnRaid(char * mdDev, const unsigned char * boot) {	printf("%s%s", s,
2740	int fd;	line->elements[i].indent);
2741	char buf[65536];	}
	char * end;
	char * chptr;
	char * chptr2;
	int rc;
2742
2743	/* it's on raid; we need to parse /proc/mdstat and check all of the	i++;
2744	*raw* devices listed in there */	}
2745
2746	if (!strncmp(mdDev, "/dev/", 5))	s = line->elements[i - 1].indent;
2747	mdDev += 5;	printf("\"\n");
2748		}
2749		}
2750
2751	if ((fd = open("/proc/mdstat", O_RDONLY)) < 0) {	if (!root) {
2752	fprintf(stderr, _("grubby: failed to open /proc/mdstat: %s\n"),	line = getLineByType(LT_ROOT, entry->lines);
2753	strerror(errno));	if (line && line->numElements >= 2)
2754	return 2;	root = line->elements[1].item;
2755	}	}
2756
2757	rc = read(fd, buf, sizeof(buf) - 1);	if (root) {
2758	if (rc < 0 || rc == (sizeof(buf) - 1)) {	char *s = alloca(strlen(root) + 1);
	fprintf(stderr, _("grubby: failed to read /proc/mdstat: %s\n"),
	strerror(errno));
	close(fd);
	return 2;
	}
	close(fd);
	buf[rc] = '\0';
2759
2760	chptr = buf;	strcpy(s, root);
2761	while (*chptr) {	if (s[strlen(s) - 1] == '"')
2762	end = strchr(chptr, '\n');	s[strlen(s) - 1] = '\0';
2763	if (!end) break;	/* make sure the root doesn't have a trailing " */
2764	*end = '\0';	printf("root=%s\n", s);
2765		}
2766
2767	if (!strncmp(chptr, mdDev, strlen(mdDev)) &&	line =
2768	chptr[strlen(mdDev)] == ' ') {	getLineByType(LT_INITRD | LT_INITRD_EFI | LT_INITRD_16,
2769		entry->lines);
2770
2771	/* found the device */	if (line && line->numElements >= 2) {
2772	while (*chptr && *chptr != ':') chptr++;	if (!strncmp(prefix, line->elements[1].item, strlen(prefix)))
2773	chptr++;	printf("initrd=");
2774	while (*chptr && isspace(*chptr)) chptr++;	else
2775		printf("initrd=%s", prefix);
	/* 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++;
	}
2776
2777	/*  we're good to go */	for (i = 1; i < line->numElements; i++)
2778	return 2;	printf("%s%s", line->elements[i].item,
2779		line->elements[i].indent);
2780		printf("\n");
2781	}	}
2782
2783	chptr = end + 1;	line = getLineByType(LT_TITLE, entry->lines);
2784	}	if (line) {
2785		char *entryTitle;
2786		/* if we can extractTitle, then it's a zipl config and
2787		* if not then we go ahead with what's existed prior */
2788		entryTitle = extractTitle(config, line);
2789		if (!entryTitle) {
2790		entryTitle=line->elements[1].item;
2791		}
2792		printf("title=%s\n", entryTitle);
2793		} else {
2794		char *title;
2795		line = getLineByType(LT_MENUENTRY, entry->lines);
2796		if (line) {
2797		title = grub2ExtractTitle(line);
2798		if (title)
2799		printf("title=%s\n", title);
2800		}
2801		}
2802
2803	fprintf(stderr,	for (j = 0, line = entry->lines; line; line = line->next) {
2804	_("grubby: raid device /dev/%s not found in /proc/mdstat\n"),	if ((line->type & LT_MBMODULE) && line->numElements >= 2) {
2805	mdDev);	if (!strncmp
2806	return 0;	(prefix, line->elements[1].item, strlen(prefix)))
2807		printf("mbmodule%d=", j);
2808		else
2809		printf("mbmodule%d=%s", j, prefix);
2810
2811		for (i = 1; i < line->numElements; i++)
2812		printf("%s%s", line->elements[i].item,
2813		line->elements[i].indent);
2814		printf("\n");
2815		j++;
2816		}
2817		}
2818	}	}
2819
2820	int checkForLilo(struct grubConfig * config) {	int isSuseSystem(void)
2821	int fd;	{
2822	unsigned char boot[512];	const char *path;
2823	struct singleLine * line;	const static char default_path[] = "/etc/SuSE-release";
	for (line = config->theLines; line; line = line->next)
	if (line->type == LT_BOOT) break;
	if (!line) {
	fprintf(stderr,
	_("grubby: no boot line found in lilo configuration\n"));
	return 1;
	}
2824
2825	if (line->numElements != 2) return 1;	if ((path = getenv("GRUBBY_SUSE_RELEASE")) == NULL)
2826		path = default_path;
2827
2828	fd = open("/boot/boot.b", O_RDONLY);	if (!access(path, R_OK))
2829	if (fd < 0) {	return 1;
2830	fprintf(stderr, _("grubby: unable to open %s: %s\n"),	return 0;
2831	"/boot/boot.b", strerror(errno));	}
	return 1;
	}
2832
2833	if (read(fd, boot, 512) != 512) {	int isSuseGrubConf(const char *path)
2834	fprintf(stderr, _("grubby: unable to read %s: %s\n"),	{
2835	"/boot/boot.b", strerror(errno));	FILE *grubConf;
2836	return 1;	char *line = NULL;
2837	}	size_t len = 0, res = 0;
2838	close(fd);
2839		grubConf = fopen(path, "r");
2840		if (!grubConf) {
2841		dbgPrintf("Could not open SuSE configuration file '%s'\n",
2842		path);
2843		return 0;
2844		}
2845
2846		while ((res = getline(&line, &len, grubConf)) != -1) {
2847		if (!strncmp(line, "setup", 5)) {
2848		fclose(grubConf);
2849		free(line);
2850		return 1;
2851		}
2852		}
2853
2854	if (!strncmp("/dev/md", line->elements[1].item, 7))	dbgPrintf("SuSE configuration file '%s' does not appear to be valid\n",
2855	return checkLiloOnRaid(line->elements[1].item, boot);	path);
2856
2857	return checkDeviceBootloader(line->elements[1].item, boot);	fclose(grubConf);
2858		free(line);
2859		return 0;
2860	}	}
2861
2862	int checkForGrub(struct grubConfig * config) {	int suseGrubConfGetLba(const char *path, int *lbaPtr)
2863	int fd;	{
2864	unsigned char bootSect[512];	FILE *grubConf;
2865	char * boot;	char *line = NULL;
2866		size_t res = 0, len = 0;
2867
2868	if (parseSysconfigGrub(NULL, &boot))	if (!path)
2869	return 0;	return 1;
2870		if (!lbaPtr)
2871		return 1;
2872
2873	/* assume grub is not installed -- not an error condition */	grubConf = fopen(path, "r");
2874	if (!boot)	if (!grubConf)
2875	return 0;	return 1;
2876
2877	fd = open("/boot/grub/stage1", O_RDONLY);	while ((res = getline(&line, &len, grubConf)) != -1) {
2878	if (fd < 0)	if (line[res - 1] == '\n')
2879	/* this doesn't exist if grub hasn't been installed */	line[res - 1] = '\0';
2880	return 0;	else if (len > res)
2881		line[res] = '\0';
2882		else {
2883		line = realloc(line, res + 1);
2884		line[res] = '\0';
2885		}
2886
2887	if (read(fd, bootSect, 512) != 512) {	if (!strncmp(line, "setup", 5)) {
2888	fprintf(stderr, _("grubby: unable to read %s: %s\n"),	if (strstr(line, "--force-lba")) {
2889	"/boot/grub/stage1", strerror(errno));	*lbaPtr = 1;
2890	close(fd);	} else {
2891	return 1;	*lbaPtr = 0;
2892	}	}
2893	close(fd);	dbgPrintf("lba: %i\n", *lbaPtr);
2894		break;
2895		}
2896		}
2897
2898	return checkDeviceBootloader(boot, bootSect);	free(line);
2899		fclose(grubConf);
2900		return 0;
2901	}	}
2902
2903	int checkForExtLinux(struct grubConfig * config) {	int suseGrubConfGetInstallDevice(const char *path, char **devicePtr)
2904	int fd;	{
2905	unsigned char bootSect[512];	FILE *grubConf;
2906	char * boot;	char *line = NULL;
2907	char executable[] = "/boot/extlinux/extlinux";	size_t res = 0, len = 0;
2908		char *lastParamPtr = NULL;
2909		char *secLastParamPtr = NULL;
2910		char installDeviceNumber = '\0';
2911		char *bounds = NULL;
2912
2913	printf("entered: checkForExtLinux()\n");	if (!path)
2914		return 1;
2915		if (!devicePtr)
2916		return 1;
2917
2918	if (parseSysconfigGrub(NULL, &boot))	grubConf = fopen(path, "r");
2919	return 0;	if (!grubConf)
2920		return 1;
2921
2922	/* assume grub is not installed -- not an error condition */	while ((res = getline(&line, &len, grubConf)) != -1) {
2923	if (!boot)	if (strncmp(line, "setup", 5))
2924	return 0;	continue;
2925
2926		if (line[res - 1] == '\n')
2927		line[res - 1] = '\0';
2928		else if (len > res)
2929		line[res] = '\0';
2930		else {
2931		line = realloc(line, res + 1);
2932		line[res] = '\0';
2933		}
2934
2935	fd = open(executable, O_RDONLY);	lastParamPtr = bounds = line + res;
	if (fd < 0)
	/* this doesn't exist if grub hasn't been installed */
	return 0;
2936
2937	if (read(fd, bootSect, 512) != 512) {	/* Last parameter in grub may be an optional IMAGE_DEVICE */
2938	fprintf(stderr, _("grubby: unable to read %s: %s\n"),	while (!isspace(*lastParamPtr))
2939	executable, strerror(errno));	lastParamPtr--;
2940	return 1;	lastParamPtr++;
2941	}
2942	close(fd);	secLastParamPtr = lastParamPtr - 2;
2943		dbgPrintf("lastParamPtr: %s\n", lastParamPtr);
2944
2945		if (lastParamPtr + 3 > bounds) {
2946		dbgPrintf("lastParamPtr going over boundary");
2947		fclose(grubConf);
2948		free(line);
2949		return 1;
2950		}
2951		if (!strncmp(lastParamPtr, "(hd", 3))
2952		lastParamPtr += 3;
2953		dbgPrintf("lastParamPtr: %c\n", *lastParamPtr);
2954
2955		/*
2956		* Second last parameter will decide wether last parameter is
2957		* an IMAGE_DEVICE or INSTALL_DEVICE
2958		*/
2959		while (!isspace(*secLastParamPtr))
2960		secLastParamPtr--;
2961		secLastParamPtr++;
2962
2963		if (secLastParamPtr + 3 > bounds) {
2964		dbgPrintf("secLastParamPtr going over boundary");
2965		fclose(grubConf);
2966		free(line);
2967		return 1;
2968		}
2969		dbgPrintf("secLastParamPtr: %s\n", secLastParamPtr);
2970		if (!strncmp(secLastParamPtr, "(hd", 3)) {
2971		secLastParamPtr += 3;
2972		dbgPrintf("secLastParamPtr: %c\n", *secLastParamPtr);
2973		installDeviceNumber = *secLastParamPtr;
2974		} else {
2975		installDeviceNumber = *lastParamPtr;
2976		}
2977
2978		*devicePtr = malloc(6);
2979		snprintf(*devicePtr, 6, "(hd%c)", installDeviceNumber);
2980		dbgPrintf("installDeviceNumber: %c\n", installDeviceNumber);
2981		fclose(grubConf);
2982		free(line);
2983		return 0;
2984		}
2985
2986	return checkDeviceBootloader(boot, bootSect);	free(line);
2987		fclose(grubConf);
2988		return 1;
2989	}	}
2990
2991	static char * getRootSpecifier(char * str) {	int grubGetBootFromDeviceMap(const char *device, char **bootPtr)
2992	char * idx, * rootspec = NULL;	{
2993		FILE *deviceMap;
2994		char *line = NULL;
2995		size_t res = 0, len = 0;
2996		char *devicePtr;
2997		char *bounds = NULL;
2998		const char *path;
2999		const static char default_path[] = "/boot/grub/device.map";
3000
3001	if (*str == '(') {	if (!device)
3002	idx = rootspec = strdup(str);	return 1;
3003	while(*idx && (*idx != ')') && (!isspace(*idx))) idx++;	if (!bootPtr)
3004	*(++idx) = '\0';	return 1;
	}
	return rootspec;
	}
3005
3006	static char * getInitrdVal(struct grubConfig * config,	if ((path = getenv("GRUBBY_GRUB_DEVICE_MAP")) == NULL)
3007	const char * prefix, struct singleLine *tmplLine,	path = default_path;
	const char * newKernelInitrd,
	char ** extraInitrds, int extraInitrdCount)
	{
	char *initrdVal, *end;
	int i;
	size_t totalSize;
	size_t prefixLen;
	char separatorChar;
	prefixLen = strlen(prefix);
	totalSize = strlen(newKernelInitrd) - prefixLen + 1 /* \0 */;
	for (i = 0; i < extraInitrdCount; i++) {
	totalSize += sizeof(separatorChar);
	totalSize += strlen(extraInitrds[i]) - prefixLen;
	}
3008
3009	initrdVal = end = malloc(totalSize);	dbgPrintf("opening grub device.map file from: %s\n", path);
3010		deviceMap = fopen(path, "r");
3011		if (!deviceMap)
3012		return 1;
3013
3014	end = stpcpy (end, newKernelInitrd + prefixLen);	while ((res = getline(&line, &len, deviceMap)) != -1) {
3015		if (!strncmp(line, "#", 1))
3016		continue;
3017
3018		if (line[res - 1] == '\n')
3019		line[res - 1] = '\0';
3020		else if (len > res)
3021		line[res] = '\0';
3022		else {
3023		line = realloc(line, res + 1);
3024		line[res] = '\0';
3025		}
3026
3027	separatorChar = getKeywordByType(LT_INITRD, config->cfi)->separatorChar;	devicePtr = line;
3028	for (i = 0; i < extraInitrdCount; i++) {	bounds = line + res;
	const char *extraInitrd;
	int j;
3029
3030	extraInitrd = extraInitrds[i] + prefixLen;	while ((isspace(*line) && ((devicePtr + 1) <= bounds)))
3031	/* Don't add entries that are already there */	devicePtr++;
3032	if (tmplLine != NULL) {	dbgPrintf("device: %s\n", devicePtr);
3033	for (j = 2; j < tmplLine->numElements; j++)
3034	if (strcmp(extraInitrd, tmplLine->elements[j].item) == 0)	if (!strncmp(devicePtr, device, strlen(device))) {
3035	break;	devicePtr += strlen(device);
3036		while (isspace(*devicePtr)
3037		&& ((devicePtr + 1) <= bounds))
3038		devicePtr++;
3039
3040	if (j != tmplLine->numElements)	*bootPtr = strdup(devicePtr);
3041	continue;	break;
3042		}
3043	}	}
3044
3045	*end++ = separatorChar;	free(line);
3046	end = stpcpy(end, extraInitrd);	fclose(deviceMap);
3047	}	return 0;
3048		}
3049
3050		int suseGrubConfGetBoot(const char *path, char **bootPtr)
3051		{
3052		char *grubDevice;
3053
3054		if (suseGrubConfGetInstallDevice(path, &grubDevice))
3055		dbgPrintf("error looking for grub installation device\n");
3056		else
3057		dbgPrintf("grubby installation device: %s\n", grubDevice);
3058
3059	return initrdVal;	if (grubGetBootFromDeviceMap(grubDevice, bootPtr))
3060		dbgPrintf("error looking for grub boot device\n");
3061		else
3062		dbgPrintf("grubby boot device: %s\n", *bootPtr);
3063
3064		free(grubDevice);
3065		return 0;
3066	}	}
3067
3068	int addNewKernel(struct grubConfig * config, struct singleEntry * template,	int parseSuseGrubConf(int *lbaPtr, char **bootPtr)
3069	const char * prefix,	{
3070	char * newKernelPath, char * newKernelTitle,	/*
3071	char * newKernelArgs, char * newKernelInitrd,	* This SuSE grub configuration file at this location is not your
3072	char ** extraInitrds, int extraInitrdCount,	* average grub configuration file, but instead the grub commands
3073	char * newMBKernel, char * newMBKernelArgs) {	* used to setup grub on that system.
3074	struct singleEntry * new;	*/
3075	struct singleLine * newLine = NULL, * tmplLine = NULL, * masterLine = NULL;	const char *path;
3076	int needs;	const static char default_path[] = "/etc/grub.conf";
3077	char * chptr;
3078		if ((path = getenv("GRUBBY_SUSE_GRUB_CONF")) == NULL)
3079	if (!newKernelPath) return 0;	path = default_path;
3080
3081	/* if the newKernelTitle is too long silently munge it into something	if (!isSuseGrubConf(path))
3082	* we can live with. truncating is first check, then we'll just mess with	return 1;
	* 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;
3083
3084	sprintf(buf, "TITLE=%.*s", config->cfi->maxTitleLength, newKernelTitle);	if (lbaPtr) {
3085	while (findEntryByPath(config, buf, NULL, NULL)) {	*lbaPtr = 0;
3086	sprintf(numBuf, "%d", i++);	if (suseGrubConfGetLba(path, lbaPtr))
3087	strcpy(buf + strlen(buf) - strlen(numBuf), numBuf);	return 1;
3088	}	}
3089
3090	newKernelTitle = buf + 6;	if (bootPtr) {
3091	}	*bootPtr = NULL;
3092		suseGrubConfGetBoot(path, bootPtr);
3093		}
3094
3095	new = malloc(sizeof(*new));	return 0;
3096	new->skip = 0;	}
	new->multiboot = 0;
	new->next = config->entries;
	new->lines = NULL;
	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;
	}
3097
3098	if (template) {	int parseSysconfigGrub(int *lbaPtr, char **bootPtr)
3099	for (masterLine = template->lines;	{
3100	masterLine && (tmplLine = lineDup(masterLine));	FILE *in;
3101	lineFree(tmplLine), masterLine = masterLine->next)	char buf[1024];
3102	{	char *chptr;
3103	dbgPrintf("addNewKernel processing %d\n", tmplLine->type);	char *start;
3104		char *param;
	/* 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_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 {
	/* pass through other lines from the template */
	newLine = addLineTmpl(new, tmplLine, newLine, NULL, config->cfi);
	}
	}
	} else {
	/* don't have a template, so start the entry with the
	* appropriate starting line
	*/
	switch (config->cfi->entrySeparator) {
	case LT_KERNEL:
	if (new->multiboot && config->cfi->mbHyperFirst) {
	/* fall through to LT_HYPER */
	} else {
	newLine = addLine(new, config->cfi, LT_KERNEL,
	config->primaryIndent,
	newKernelPath + strlen(prefix));
	needs &= ~NEED_KERNEL;
	break;
	}
3105
3106	case LT_HYPER:	in = fopen("/etc/sysconfig/grub", "r");
3107	newLine = addLine(new, config->cfi, LT_HYPER,	if (!in)
3108	config->primaryIndent,	return 1;
	newMBKernel + strlen(prefix));
	needs &= ~NEED_MB;
	break;
3109
3110	case LT_TITLE:	if (lbaPtr)
3111	if( useextlinuxmenu != 0 ){ // We just need useextlinuxmenu to not be zero (set above)	*lbaPtr = 0;
3112	char * templabel;	if (bootPtr)
3113	int x = 0, y = 0;	*bootPtr = NULL;
3114
3115	templabel = strdup(newKernelTitle);	while (fgets(buf, sizeof(buf), in)) {
3116	while( templabel[x]){	start = buf;
3117	if( templabel[x] == ' ' ){	while (isspace(*start))
3118	y = x;	start++;
3119	while( templabel[y] ){	if (*start == '#')
3120	templabel[y] = templabel[y+1];	continue;
3121	y++;
3122	}	chptr = strchr(start, '=');
3123	}	if (!chptr)
3124	x++;	continue;
3125	}	chptr--;
3126	newLine = addLine(new, config->cfi, LT_TITLE,	while (*chptr && isspace(*chptr))
3127	config->primaryIndent, templabel);	chptr--;
3128	free(templabel);	chptr++;
3129	}else{	*chptr = '\0';
3130	newLine = addLine(new, config->cfi, LT_TITLE,
3131	config->primaryIndent, newKernelTitle);	param = chptr + 1;
3132		while (*param && isspace(*param))
3133		param++;
3134		if (*param == '=') {
3135		param++;
3136		while (*param && isspace(*param))
3137		param++;
3138	}	}
	needs &= ~NEED_TITLE;
	break;
3139
3140	default:	chptr = param;
3141	abort();	while (*chptr && !isspace(*chptr))
3142		chptr++;
3143		*chptr = '\0';
3144
3145		if (!strcmp(start, "forcelba") && !strcmp(param, "1") && lbaPtr)
3146		*lbaPtr = 1;
3147		else if (!strcmp(start, "boot") && bootPtr)
3148		*bootPtr = strdup(param);
3149	}	}
	}
3150
3151	/* add the remainder of the lines, i.e. those that either	fclose(in);
	* weren't present in the template, or in the case of no template,
	* all the lines following the entrySeparator.
	*/
	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;
	}
3152
3153	if (needs) {	return 0;
3154	printf(_("grubby: needs=%d, aborting\n"), needs);	}
	abort();
	}
3155
3156	if (updateImage(config, "0", prefix, newKernelArgs, NULL,	void dumpSysconfigGrub(void)
3157	newMBKernelArgs, NULL)) return 1;	{
3158		char *boot = NULL;
3159		int lba;
3160
3161	return 0;	if (isSuseSystem()) {
3162		if (parseSuseGrubConf(&lba, &boot)) {
3163		free(boot);
3164		return;
3165		}
3166		} else {
3167		if (parseSysconfigGrub(&lba, &boot)) {
3168		free(boot);
3169		return;
3170		}
3171		}
3172
3173		if (lba)
3174		printf("lba\n");
3175		if (boot) {
3176		printf("boot=%s\n", boot);
3177		free(boot);
3178		}
3179	}	}
3180
3181	static void traceback(int signum)	int displayInfo(struct grubConfig *config, char *kernel, const char *prefix)
3182	{	{
3183	void *array[40];	int i = 0;
3184	size_t size;	struct singleEntry *entry;
3185		struct singleLine *line;
3186	signal(SIGSEGV, SIG_DFL);
3187	memset(array, '\0', sizeof (array));	entry = findEntryByPath(config, kernel, prefix, &i);
3188	size = backtrace(array, 40);	if (!entry) {
3189		fprintf(stderr, _("grubby: kernel not found\n"));
	fprintf(stderr, "grubby recieved SIGSEGV!  Backtrace (%ld):\n",
	(unsigned long)size);
	backtrace_symbols_fd(array, size, STDERR_FILENO);
	exit(1);
	}
	int main(int argc, const char ** argv) {
	poptContext optCon;
	char * grubConfig = NULL;
	char * outputFile = NULL;
	int arg = 0;
	int flags = 0;
	int badImageOkay = 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;
	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 },
	{ "default-kernel", 0, 0, &displayDefault, 0,
	_("display the path 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") },
	{ "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);
3190	return 1;	return 1;
	}
	break;
3191	}	}
	}
	if (arg < -1) {
	fprintf(stderr, _("grubby: bad argument %s: %s\n"),
	poptBadOption(optCon, POPT_BADOPTION_NOALIAS),
	poptStrerror(arg));
	return 1;
	}
3192
3193	if ((chptr = poptGetArg(optCon))) {	/* this is a horrible hack to support /etc/sysconfig/grub; there must
3194	fprintf(stderr, _("grubby: unexpected argument %s\n"), chptr);	be a better way */
3195	return 1;	if (config->cfi == &grubConfigType) {
3196	}	dumpSysconfigGrub();
3197		} else {
3198		line = getLineByType(LT_BOOT, config->theLines);
3199		if (line && line->numElements >= 1) {
3200		printf("boot=%s\n", line->elements[1].item);
3201		}
3202
3203	if ((configureLilo + configureGrub + configureELilo +	line = getLineByType(LT_LBA, config->theLines);
3204	configureYaboot + configureSilo + configureZipl +	if (line)
3205	configureExtLinux ) > 1) {	printf("lba\n");
3206	fprintf(stderr, _("grubby: cannot specify multiple bootloaders\n"));	}
	return 1;
	} else if (bootloaderProbe && grubConfig) {
	fprintf(stderr,
	_("grubby: cannot specify config file with --bootloader-probe\n"));
	return 1;
	} 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;
	}
3207
3208	if (!cfi) {	displayEntry(config, entry, prefix, i);
	#ifdef __ia64__
	cfi = &eliloConfigType;
	#elif __powerpc__
	cfi = &yabootConfigType;
	#elif __sparc__
	cfi = &siloConfigType;
	#elif __s390__
	cfi = &ziplConfigType;
	#elif __s390x__
	cfi = &ziplConfigtype;
	#else
	cfi = &grubConfigType;
	#endif
	}
3209
3210	if (!grubConfig)	i++;
3211	grubConfig = cfi->defaultConfig;	while ((entry = findEntryByPath(config, kernel, prefix, &i))) {
3212		displayEntry(config, entry, prefix, i);
3213		i++;
3214		}
3215
3216	if (bootloaderProbe && (displayDefault || kernelInfo || newKernelVersion ||	return 0;
3217	newKernelPath || removeKernelPath || makeDefault ||	}
	defaultKernel)) {
	fprintf(stderr, _("grubby: --bootloader-probe may not be used with "
	"specified option"));
	return 1;
	}
3218
3219	if ((displayDefault || kernelInfo) && (newKernelVersion || newKernelPath ||	struct singleLine *addLineTmpl(struct singleEntry *entry,
3220	removeKernelPath)) {	struct singleLine *tmplLine,
3221	fprintf(stderr, _("grubby: --default-kernel and --info may not "	struct singleLine *prevLine,
3222	"be used when adding or removing kernels\n"));	const char *val, struct configFileInfo *cfi)
3223	return 1;	{
3224	}	struct singleLine *newLine = lineDup(tmplLine);
3225
3226	if (newKernelPath && !newKernelTitle) {	if (isEfi && cfi == &grub2ConfigType) {
3227	fprintf(stderr, _("grubby: kernel title must be specified\n"));	enum lineType_e old = newLine->type;
3228	return 1;	newLine->type = preferredLineType(newLine->type, cfi);
3229	} else if (!newKernelPath && (newKernelTitle  || newKernelInitrd ||	if (old != newLine->type)
3230	newKernelInitrd || copyDefault     ||	newLine->elements[0].item =
3231	makeDefault || extraInitrdCount > 0)) {	getKeyByType(newLine->type, cfi);
3232	fprintf(stderr, _("grubby: kernel path expected\n"));	}
	return 1;
	}
3233
3234	if (newKernelPath && updateKernelPath) {	if (val) {
3235	fprintf(stderr, _("grubby: --add-kernel and --update-kernel may"	/* override the inherited value with our own.
3236	"not be used together"));	* This is a little weak because it only applies to elements[1]
3237	return 1;	*/
3238	}	if (newLine->numElements > 1)
3239		removeElement(newLine, 1);
3240		insertElement(newLine, val, 1, cfi);
3241
3242		/* but try to keep the rootspec from the template... sigh */
3243		if (tmplLine->
3244		type & (LT_HYPER | LT_KERNEL | LT_MBMODULE | LT_INITRD |
3245		LT_KERNEL_EFI | LT_INITRD_EFI | LT_KERNEL_16 |
3246		LT_INITRD_16)) {
3247		char *rootspec =
3248		getRootSpecifier(tmplLine->elements[1].item);
3249		if (rootspec != NULL) {
3250		free(newLine->elements[1].item);
3251		newLine->elements[1].item =
3252		sdupprintf("%s%s", rootspec, val);
3253		}
3254		}
3255		}
3256
3257	if (makeDefault && defaultKernel) {	dbgPrintf("addLineTmpl(%s)\n", newLine->numElements ?
3258	fprintf(stderr, _("grubby: --make-default and --default-kernel "	newLine->elements[0].item : "");
	"may not be used together\n"));
	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;
	}
3259
3260	if (!strcmp(grubConfig, "-") && !outputFile) {	if (!entry->lines) {
3261	fprintf(stderr, _("grubby: output file must be specified if stdin "	/* first one on the list */
3262	"is used\n"));	entry->lines = newLine;
3263	return 1;	} else if (prevLine) {
3264	}	/* add after prevLine */
3265		newLine->next = prevLine->next;
3266		prevLine->next = newLine;
3267		}
3268
3269	if (!removeKernelPath && !newKernelPath && !displayDefault && !defaultKernel	return newLine;
3270	&& !kernelInfo && !bootloaderProbe && !updateKernelPath	}
	&& !removeMBKernel) {
	fprintf(stderr, _("grubby: no action specified\n"));
	return 1;
	}
3271
3272	flags |= badImageOkay ? GRUBBY_BADIMAGE_OKAY : 0;	/* val may be NULL */
3273		struct singleLine *addLine(struct singleEntry *entry,
3274		struct configFileInfo *cfi,
3275		enum lineType_e type, char *defaultIndent,
3276		const char *val)
3277		{
3278		struct singleLine *line, *prev;
3279		struct keywordTypes *kw;
3280		struct singleLine tmpl;
3281
3282	if (cfi->needsBootPrefix) {	/* NB: This function shouldn't allocate items on the heap, rather on
3283	if (!bootPrefix) {	* the stack since it calls addLineTmpl which will make copies.
3284	bootPrefix = findBootPrefix();	*/
3285	if (!bootPrefix) return 1;	if (type == LT_TITLE && cfi->titleBracketed) {
3286	} else {	/* we're doing a bracketed title (zipl) */
3287	/* this shouldn't end with a / */	tmpl.type = type;
3288	if (bootPrefix[strlen(bootPrefix) - 1] == '/')	tmpl.numElements = 1;
3289	bootPrefix[strlen(bootPrefix) - 1] = '\0';	tmpl.elements = alloca(sizeof(*tmpl.elements));
3290		tmpl.elements[0].item = alloca(strlen(val) + 3);
3291		sprintf(tmpl.elements[0].item, "[%s]", val);
3292		tmpl.elements[0].indent = "";
3293		val = NULL;
3294		} else if (type == LT_MENUENTRY) {
3295		char *lineend = "--class gnu-linux --class gnu --class os {";
3296		if (!val) {
3297		fprintf(stderr,
3298		"Line type LT_MENUENTRY requires a value\n");
3299		abort();
3300		}
3301		kw = getKeywordByType(type, cfi);
3302		if (!kw) {
3303		fprintf(stderr,
3304		"Looking up keyword for unknown type %d\n",
3305		type);
3306		abort();
3307		}
3308		tmpl.indent = "";
3309		tmpl.type = type;
3310		tmpl.numElements = 3;
3311		tmpl.elements =
3312		alloca(sizeof(*tmpl.elements) * tmpl.numElements);
3313		tmpl.elements[0].item = kw->key;
3314		tmpl.elements[0].indent = alloca(2);
3315		sprintf(tmpl.elements[0].indent, "%c", kw->nextChar);
3316		tmpl.elements[1].item = (char *)val;
3317		tmpl.elements[1].indent = alloca(2);
3318		sprintf(tmpl.elements[1].indent, "%c", kw->nextChar);
3319		tmpl.elements[2].item = alloca(strlen(lineend) + 1);
3320		strcpy(tmpl.elements[2].item, lineend);
3321		tmpl.elements[2].indent = "";
3322		} else {
3323		kw = getKeywordByType(type, cfi);
3324		if (!kw) {
3325		fprintf(stderr,
3326		"Looking up keyword for unknown type %d\n",
3327		type);
3328		abort();
3329		}
3330		tmpl.type = type;
3331		tmpl.numElements = val ? 2 : 1;
3332		tmpl.elements =
3333		alloca(sizeof(*tmpl.elements) * tmpl.numElements);
3334		tmpl.elements[0].item = kw->key;
3335		tmpl.elements[0].indent = alloca(2);
3336		sprintf(tmpl.elements[0].indent, "%c", kw->nextChar);
3337		if (val) {
3338		tmpl.elements[1].item = (char *)val;
3339		tmpl.elements[1].indent = "";
3340		}
3341	}	}
	} else {
	bootPrefix = "";
	}
3342
3343	if (!cfi->mbAllowExtraInitRds &&	/* The last non-empty line gives us the indention to us and the line
3344	extraInitrdCount > 0) {	* to insert after. Note that comments are considered empty lines,
3345	fprintf(stderr, _("grubby: %s doesn't allow multiple initrds\n"), cfi->defaultConfig);	* which may not be ideal? If there are no lines or we are looking at
3346	return 1;	* the first line, we use defaultIndent (the first line is normally
3347	}	* indented differently from the rest) */
3348		for (line = entry->lines, prev = NULL; line; line = line->next) {
3349		if (line->numElements)
3350		prev = line;
3351		/* fall back on the last line if prev isn't otherwise set */
3352		if (!line->next && !prev)
3353		prev = line;
3354		}
3355
3356		struct singleLine *menuEntry;
3357		menuEntry = getLineByType(LT_MENUENTRY, entry->lines);
3358		if (tmpl.type == LT_ENTRY_END) {
3359		if (menuEntry)
3360		tmpl.indent = menuEntry->indent;
3361		else
3362		tmpl.indent = defaultIndent ? : "";
3363		} else if (tmpl.type != LT_MENUENTRY) {
3364		if (menuEntry)
3365		tmpl.indent = "\t";
3366		else if (prev == entry->lines)
3367		tmpl.indent = defaultIndent ? : "";
3368		else
3369		tmpl.indent = prev->indent;
3370		}
3371
3372	if (bootloaderProbe) {	return addLineTmpl(entry, &tmpl, prev, val, cfi);
3373	int lrc = 0, grc = 0, erc = 0;	}
	struct grubConfig * lconfig, * gconfig;
	if (!access(grubConfigType.defaultConfig, F_OK)) {
	gconfig = readConfig(grubConfigType.defaultConfig, &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) return 1;
	if (lrc == 2) printf("lilo\n");
	if (grc == 2) printf("grub\n");
	if (erc == 2) printf("extlinux\n");
3374
3375	return 0;	void removeLine(struct singleEntry *entry, struct singleLine *line)
3376	}	{
3377		struct singleLine *prev;
3378		int i;
3379
3380	config = readConfig(grubConfig, cfi);	for (i = 0; i < line->numElements; i++) {
3381	if (!config) return 1;	free(line->elements[i].item);
3382		free(line->elements[i].indent);
3383		}
3384		free(line->elements);
3385		free(line->indent);
3386
3387	if (displayDefault) {	if (line == entry->lines) {
3388	struct singleLine * line;	entry->lines = line->next;
3389	struct singleEntry * entry;	} else {
3390	char * rootspec;	prev = entry->lines;
3391		while (prev->next != line)
3392	if (config->defaultImage == -1) return 0;	prev = prev->next;
3393	entry = findEntryByIndex(config, config->defaultImage);	prev->next = line->next;
3394	if (!entry) return 0;	}
	if (!suitableImage(entry, bootPrefix, 0, flags)) return 0;
	line = getLineByType(LT_KERNEL|LT_HYPER, entry->lines);
	if (!line) return 0;
	rootspec = getRootSpecifier(line->elements[1].item);
	printf("%s%s\n", bootPrefix, line->elements[1].item +
	((rootspec != NULL) ? strlen(rootspec) : 0));
3395
3396	return 0;	free(line);
3397	} else if (kernelInfo)	}
	return displayInfo(config, kernelInfo, bootPrefix);
3398
3399	if (copyDefault) {	static void requote(struct singleLine *tmplLine, struct configFileInfo *cfi)
3400	template = findTemplate(config, bootPrefix, NULL, 0, flags);	{
3401	if (!template) return 1;	struct singleLine newLine = {
3402	}	.indent = tmplLine->indent,
3403		.type = tmplLine->type,
3404		.next = tmplLine->next,
3405		};
3406		int firstQuotedItem = -1;
3407		int quoteLen = 0;
3408		int j;
3409		int element = 0;
3410		char *c;
3411
3412	markRemovedImage(config, removeKernelPath, bootPrefix);	c = malloc(strlen(tmplLine->elements[0].item) + 1);
3413	markRemovedImage(config, removeMBKernel, bootPrefix);	strcpy(c, tmplLine->elements[0].item);
3414	setDefaultImage(config, newKernelPath != NULL, defaultKernel, makeDefault,	insertElement(&newLine, c, element++, cfi);
3415	bootPrefix, flags);	free(c);
3416	setFallbackImage(config, newKernelPath != NULL);	c = NULL;
3417	if (updateImage(config, updateKernelPath, bootPrefix, newKernelArgs,
3418	removeArgs, newMBKernelArgs, removeMBKernelArgs)) return 1;	for (j = 1; j < tmplLine->numElements; j++) {
3419	if (addNewKernel(config, template, bootPrefix, newKernelPath,	if (firstQuotedItem == -1) {
3420	newKernelTitle, newKernelArgs, newKernelInitrd,	quoteLen += strlen(tmplLine->elements[j].item);
3421	extraInitrds, extraInitrdCount,
3422	newMBKernel, newMBKernelArgs)) return 1;	if (isquote(tmplLine->elements[j].item[0])) {
3423		firstQuotedItem = j;
3424		quoteLen +=
3425	if (numEntries(config) == 0) {	strlen(tmplLine->elements[j].indent);
3426	fprintf(stderr, _("grubby: doing this would leave no kernel entries. "	} else {
3427	"Not writing out new config.\n"));	c = malloc(quoteLen + 1);
3428	return 1;	strcpy(c, tmplLine->elements[j].item);
3429	}	insertElement(&newLine, c, element++, cfi);
3430		free(c);
3431		quoteLen = 0;
3432		}
3433		} else {
3434		int itemlen = strlen(tmplLine->elements[j].item);
3435		quoteLen += itemlen;
3436		quoteLen += strlen(tmplLine->elements[j].indent);
3437
3438		if (isquote(tmplLine->elements[j].item[itemlen - 1])) {
3439		c = malloc(quoteLen + 1);
3440		c[0] = '\0';
3441		for (int i = firstQuotedItem; i < j + 1; i++) {
3442		strcat(c, tmplLine->elements[i].item);
3443		strcat(c, tmplLine->elements[i].indent);
3444		}
3445		insertElement(&newLine, c, element++, cfi);
3446		free(c);
3447
3448		firstQuotedItem = -1;
3449		quoteLen = 0;
3450		}
3451		}
3452		}
3453		while (tmplLine->numElements)
3454		removeElement(tmplLine, 0);
3455		if (tmplLine->elements)
3456		free(tmplLine->elements);
3457
3458		tmplLine->numElements = newLine.numElements;
3459		tmplLine->elements = newLine.elements;
3460		}
3461
3462		static void insertElement(struct singleLine *line,
3463		const char *item, int insertHere,
3464		struct configFileInfo *cfi)
3465		{
3466		struct keywordTypes *kw;
3467		char indent[2] = "";
3468
3469		/* sanity check */
3470		if (insertHere > line->numElements) {
3471		dbgPrintf
3472		("insertElement() adjusting insertHere from %d to %d\n",
3473		insertHere, line->numElements);
3474		insertHere = line->numElements;
3475		}
3476
3477		line->elements = realloc(line->elements, (line->numElements + 1) *
3478		sizeof(*line->elements));
3479		memmove(&line->elements[insertHere + 1],
3480		&line->elements[insertHere],
3481		(line->numElements - insertHere) * sizeof(*line->elements));
3482		line->elements[insertHere].item = strdup(item);
3483
3484		kw = getKeywordByType(line->type, cfi);
3485
3486		if (line->numElements == 0) {
3487		indent[0] = '\0';
3488		} else if (insertHere == 0) {
3489		indent[0] = kw->nextChar;
3490		} else if (kw->separatorChar != '\0') {
3491		indent[0] = kw->separatorChar;
3492		} else {
3493		indent[0] = ' ';
3494		}
3495
3496		if (insertHere > 0 && line->elements[insertHere - 1].indent[0] == '\0') {
3497		/* move the end-of-line forward */
3498		line->elements[insertHere].indent =
3499		line->elements[insertHere - 1].indent;
3500		line->elements[insertHere - 1].indent = strdup(indent);
3501		} else {
3502		line->elements[insertHere].indent = strdup(indent);
3503		}
3504
3505		line->numElements++;
3506
3507		dbgPrintf("insertElement(%s, '%s%s', %d)\n",
3508		line->elements[0].item,
3509		line->elements[insertHere].item,
3510		line->elements[insertHere].indent, insertHere);
3511		}
3512
3513		static void removeElement(struct singleLine *line, int removeHere)
3514		{
3515		int i;
3516
3517		/* sanity check */
3518		if (removeHere >= line->numElements)
3519		return;
3520
3521		dbgPrintf("removeElement(%s, %d:%s)\n", line->elements[0].item,
3522		removeHere, line->elements[removeHere].item);
3523
3524		free(line->elements[removeHere].item);
3525
3526		if (removeHere > 1) {
3527		/* previous argument gets this argument's post-indentation */
3528		free(line->elements[removeHere - 1].indent);
3529		line->elements[removeHere - 1].indent =
3530		line->elements[removeHere].indent;
3531		} else {
3532		free(line->elements[removeHere].indent);
3533		}
3534
3535		/* now collapse the array, but don't bother to realloc smaller */
3536		for (i = removeHere; i < line->numElements - 1; i++)
3537		line->elements[i] = line->elements[i + 1];
3538
3539		line->numElements--;
3540		}
3541
3542		int argMatch(const char *one, const char *two)
3543		{
3544		char *first, *second;
3545		char *chptr;
3546
3547		first = strcpy(alloca(strlen(one) + 1), one);
3548		second = strcpy(alloca(strlen(two) + 1), two);
3549
3550		chptr = strchr(first, '=');
3551		if (chptr)
3552		*chptr = '\0';
3553
3554		chptr = strchr(second, '=');
3555		if (chptr)
3556		*chptr = '\0';
3557
3558		return strcmp(first, second);
3559		}
3560
3561		int updateActualImage(struct grubConfig *cfg, const char *image,
3562		const char *prefix, const char *addArgs,
3563		const char *removeArgs, int multibootArgs)
3564		{
3565		struct singleEntry *entry;
3566		struct singleLine *line, *rootLine;
3567		int index = 0;
3568		int i, k;
3569		const char **newArgs, **oldArgs;
3570		const char **arg;
3571		int useKernelArgs, useRoot;
3572		int firstElement;
3573		int *usedElements;
3574		int doreplace;
3575
3576		if (!image)
3577		return 0;
3578
3579		if (!addArgs) {
3580		newArgs = malloc(sizeof(*newArgs));
3581		*newArgs = NULL;
3582		} else {
3583		if (poptParseArgvString(addArgs, NULL, &newArgs)) {
3584		fprintf(stderr,
3585		_("grubby: error separating arguments '%s'\n"),
3586		addArgs);
3587		return 1;
3588		}
3589		}
3590
3591		if (!removeArgs) {
3592		oldArgs = malloc(sizeof(*oldArgs));
3593		*oldArgs = NULL;
3594		} else {
3595		if (poptParseArgvString(removeArgs, NULL, &oldArgs)) {
3596		fprintf(stderr,
3597		_("grubby: error separating arguments '%s'\n"),
3598		removeArgs);
3599		free(newArgs);
3600		return 1;
3601		}
3602		}
3603
3604		useKernelArgs = (getKeywordByType(LT_KERNELARGS, cfg->cfi)
3605		&& (!multibootArgs || cfg->cfi->mbConcatArgs));
3606
3607		useRoot = (getKeywordByType(LT_ROOT, cfg->cfi)
3608		&& !multibootArgs);
3609
3610		for (; (entry = findEntryByPath(cfg, image, prefix, &index)); index++) {
3611
3612		if (multibootArgs && !entry->multiboot)
3613		continue;
3614
3615		/* Determine where to put the args.  If this config supports
3616		* LT_KERNELARGS, use that.  Otherwise use
3617		* LT_HYPER/LT_KERNEL/LT_MBMODULE lines.
3618		*/
3619		if (useKernelArgs) {
3620		line = getLineByType(LT_KERNELARGS, entry->lines);
3621		if (!line) {
3622		/* no LT_KERNELARGS, need to add it */
3623		line = addLine(entry, cfg->cfi, LT_KERNELARGS,
3624		cfg->secondaryIndent, NULL);
3625		}
3626		firstElement = 1;
3627
3628		} else if (multibootArgs) {
3629		line = getLineByType(LT_HYPER, entry->lines);
3630		if (!line) {
3631		/* a multiboot entry without LT_HYPER? */
3632		continue;
3633		}
3634		firstElement = 2;
3635
3636		} else {
3637		line =
3638		getLineByType(LT_KERNEL | LT_MBMODULE |
3639		LT_KERNEL_EFI | LT_KERNEL_16,
3640		entry->lines);
3641		if (!line) {
3642		/* no LT_KERNEL or LT_MBMODULE in this entry? */
3643		continue;
3644		}
3645		firstElement = 2;
3646		}
3647
3648		/* handle the elilo case which does:
3649		*   append="hypervisor args -- kernel args"
3650		*/
3651		if (entry->multiboot && cfg->cfi->mbConcatArgs) {
3652		/* this is a multiboot entry, make sure there's
3653		* -- on the args line
3654		*/
3655		for (i = firstElement; i < line->numElements; i++) {
3656		if (!strcmp(line->elements[i].item, "--"))
3657		break;
3658		}
3659		if (i == line->numElements) {
3660		/* assume all existing args are kernel args,
3661		* prepend -- to make it official
3662		*/
3663		insertElement(line, "--", firstElement,
3664		cfg->cfi);
3665		i = firstElement;
3666		}
3667		if (!multibootArgs) {
3668		/* kernel args start after the -- */
3669		firstElement = i + 1;
3670		}
3671		} else if (cfg->cfi->mbConcatArgs) {
3672		/* this is a non-multiboot entry, remove hyper args */
3673		for (i = firstElement; i < line->numElements; i++) {
3674		if (!strcmp(line->elements[i].item, "--"))
3675		break;
3676		}
3677		if (i < line->numElements) {
3678		/* remove args up to -- */
3679		while (strcmp
3680		(line->elements[firstElement].item,
3681		"--"))
3682		removeElement(line, firstElement);
3683		/* remove -- */
3684		removeElement(line, firstElement);
3685		}
3686		}
3687
3688		usedElements = calloc(line->numElements, sizeof(*usedElements));
3689
3690		for (k = 0, arg = newArgs; *arg; arg++, k++) {
3691
3692		doreplace = 1;
3693		for (i = firstElement; i < line->numElements; i++) {
3694		if (multibootArgs && cfg->cfi->mbConcatArgs &&
3695		!strcmp(line->elements[i].item, "--")) {
3696		/* reached the end of hyper args, insert here */
3697		doreplace = 0;
3698		break;
3699		}
3700		if (usedElements[i])
3701		continue;
3702		if (!argMatch(line->elements[i].item, *arg)) {
3703		usedElements[i] = 1;
3704		break;
3705		}
3706		}
3707
3708		if (i < line->numElements && doreplace) {
3709		/* direct replacement */
3710		free(line->elements[i].item);
3711		line->elements[i].item = strdup(*arg);
3712
3713		} else if (useRoot && !strncmp(*arg, "root=/dev/", 10)) {
3714		/* root= replacement */
3715		rootLine = getLineByType(LT_ROOT, entry->lines);
3716		if (rootLine) {
3717		free(rootLine->elements[1].item);
3718		rootLine->elements[1].item =
3719		strdup(*arg + 5);
3720		} else {
3721		rootLine =
3722		addLine(entry, cfg->cfi, LT_ROOT,
3723		cfg->secondaryIndent,
3724		*arg + 5);
3725		}
3726		}
3727
3728		else {
3729		/* insert/append */
3730		insertElement(line, *arg, i, cfg->cfi);
3731		usedElements =
3732		realloc(usedElements,
3733		line->numElements *
3734		sizeof(*usedElements));
3735		memmove(&usedElements[i + 1], &usedElements[i],
3736		line->numElements - i - 1);
3737		usedElements[i] = 1;
3738
3739		/* if we updated a root= here even though
3740		* there is a LT_ROOT available we need to
3741		* remove the LT_ROOT entry (this will happen
3742		* if we switch from a device to a label) */
3743		if (useRoot && !strncmp(*arg, "root=", 5)) {
3744		rootLine =
3745		getLineByType(LT_ROOT,
3746		entry->lines);
3747		if (rootLine)
3748		removeLine(entry, rootLine);
3749		}
3750		}
3751		}
3752
3753		free(usedElements);
3754
3755		for (arg = oldArgs; *arg; arg++) {
3756		for (i = firstElement; i < line->numElements; i++) {
3757		if (multibootArgs && cfg->cfi->mbConcatArgs &&
3758		!strcmp(line->elements[i].item, "--"))
3759		/* reached the end of hyper args, stop here */
3760		break;
3761		if (!argMatch(line->elements[i].item, *arg)) {
3762		removeElement(line, i);
3763		break;
3764		}
3765		}
3766		/* handle removing LT_ROOT line too */
3767		if (useRoot && !strncmp(*arg, "root=", 5)) {
3768		rootLine = getLineByType(LT_ROOT, entry->lines);
3769		if (rootLine)
3770		removeLine(entry, rootLine);
3771		}
3772		}
3773
3774		if (line->numElements == 1) {
3775		/* don't need the line at all (note it has to be a
3776		LT_KERNELARGS for this to happen */
3777		removeLine(entry, line);
3778		}
3779		}
3780
3781		free(newArgs);
3782		free(oldArgs);
3783
3784		return 0;
3785		}
3786
3787		int updateImage(struct grubConfig *cfg, const char *image,
3788		const char *prefix, const char *addArgs,
3789		const char *removeArgs,
3790		const char *addMBArgs, const char *removeMBArgs)
3791		{
3792		int rc = 0;
3793
3794		if (!image)
3795		return rc;
3796
3797		/* update the main args first... */
3798		if (addArgs || removeArgs)
3799		rc = updateActualImage(cfg, image, prefix, addArgs, removeArgs,
3800		0);
3801		if (rc)
3802		return rc;
3803
3804		/* and now any multiboot args */
3805		if (addMBArgs || removeMBArgs)
3806		rc = updateActualImage(cfg, image, prefix, addMBArgs,
3807		removeMBArgs, 1);
3808		return rc;
3809		}
3810
3811		int addMBInitrd(struct grubConfig *cfg, const char *newMBKernel,
3812		const char *image, const char *prefix, const char *initrd,
3813		const char *title)
3814		{
3815		struct singleEntry *entry;
3816		struct singleLine *line, *kernelLine, *endLine = NULL;
3817		int index = 0;
3818
3819		if (!image)
3820		return 0;
3821
3822		for (; (entry = findEntryByPath(cfg, image, prefix, &index)); index++) {
3823		kernelLine = getLineByType(LT_MBMODULE, entry->lines);
3824		if (!kernelLine)
3825		continue;
3826
3827		/* if title is supplied, the entry's title must match it. */
3828		if (title) {
3829		char *linetitle;
3830
3831		line =
3832		getLineByType(LT_TITLE | LT_MENUENTRY,
3833		entry->lines);
3834		if (!line)
3835		continue;
3836
3837		linetitle = extractTitle(cfg, line);
3838		if (!linetitle)
3839		continue;
3840		if (strcmp(title, linetitle)) {
3841		free(linetitle);
3842		continue;
3843		}
3844		free(linetitle);
3845		}
3846
3847		if (prefix) {
3848		int prefixLen = strlen(prefix);
3849		if (!strncmp(initrd, prefix, prefixLen))
3850		initrd += prefixLen;
3851		}
3852		endLine = getLineByType(LT_ENTRY_END, entry->lines);
3853		if (endLine)
3854		removeLine(entry, endLine);
3855		line =
3856		addLine(entry, cfg->cfi,
3857		preferredLineType(LT_MBMODULE, cfg->cfi),
3858		kernelLine->indent, initrd);
3859		if (!line)
3860		return 1;
3861		if (endLine) {
3862		line = addLine(entry, cfg->cfi, LT_ENTRY_END, "", NULL);
3863		if (!line)
3864		return 1;
3865		}
3866
3867		break;
3868		}
3869
3870		return 0;
3871		}
3872
3873		int updateInitrd(struct grubConfig *cfg, const char *image,
3874		const char *prefix, const char *initrd, const char *title)
3875		{
3876		struct singleEntry *entry;
3877		struct singleLine *line, *kernelLine, *endLine = NULL;
3878		int index = 0;
3879
3880		if (!image)
3881		return 0;
3882
3883		for (; (entry = findEntryByPath(cfg, image, prefix, &index)); index++) {
3884		kernelLine =
3885		getLineByType(LT_KERNEL | LT_KERNEL_EFI | LT_KERNEL_16,
3886		entry->lines);
3887		if (!kernelLine)
3888		continue;
3889
3890		/* if title is supplied, the entry's title must match it. */
3891		if (title) {
3892		char *linetitle;
3893
3894		line =
3895		getLineByType(LT_TITLE | LT_MENUENTRY,
3896		entry->lines);
3897		if (!line)
3898		continue;
3899
3900		linetitle = extractTitle(cfg, line);
3901		if (!linetitle)
3902		continue;
3903		if (strcmp(title, linetitle)) {
3904		free(linetitle);
3905		continue;
3906		}
3907		free(linetitle);
3908		}
3909
3910		line =
3911		getLineByType(LT_INITRD | LT_INITRD_EFI | LT_INITRD_16,
3912		entry->lines);
3913		if (line)
3914		removeLine(entry, line);
3915		if (prefix) {
3916		int prefixLen = strlen(prefix);
3917		if (!strncmp(initrd, prefix, prefixLen))
3918		initrd += prefixLen;
3919		}
3920		endLine = getLineByType(LT_ENTRY_END, entry->lines);
3921		if (endLine)
3922		removeLine(entry, endLine);
3923		enum lineType_e lt;
3924		switch (kernelLine->type) {
3925		case LT_KERNEL:
3926		lt = LT_INITRD;
3927		break;
3928		case LT_KERNEL_EFI:
3929		lt = LT_INITRD_EFI;
3930		break;
3931		case LT_KERNEL_16:
3932		lt = LT_INITRD_16;
3933		break;
3934		default:
3935		lt = preferredLineType(LT_INITRD, cfg->cfi);
3936		}
3937		line = addLine(entry, cfg->cfi, lt, kernelLine->indent, initrd);
3938		if (!line)
3939		return 1;
3940		if (endLine) {
3941		line = addLine(entry, cfg->cfi, LT_ENTRY_END, "", NULL);
3942		if (!line)
3943		return 1;
3944		}
3945
3946		break;
3947		}
3948
3949		return 0;
3950		}
3951
3952		int checkDeviceBootloader(const char *device, const unsigned char *boot)
3953		{
3954		int fd;
3955		unsigned char bootSect[512];
3956		int offset;
3957
3958		fd = open(device, O_RDONLY);
3959		if (fd < 0) {
3960		fprintf(stderr, _("grubby: unable to open %s: %s\n"),
3961		device, strerror(errno));
3962		return 1;
3963		}
3964
3965		if (read(fd, bootSect, 512) != 512) {
3966		fprintf(stderr, _("grubby: unable to read %s: %s\n"),
3967		device, strerror(errno));
3968		return 1;
3969		}
3970		close(fd);
3971
3972		/* first three bytes should match, a jmp short should be in there */
3973		if (memcmp(boot, bootSect, 3))
3974		return 0;
3975
3976		if (boot[1] == JMP_SHORT_OPCODE) {
3977		offset = boot[2] + 2;
3978		} else if (boot[1] == 0xe8 || boot[1] == 0xe9) {
3979		offset = (boot[3] << 8) + boot[2] + 2;
3980		} else if (boot[0] == JMP_SHORT_OPCODE) {
3981		offset = boot[1] + 2;
3982		/*
3983		* it looks like grub, when copying stage1 into the mbr,
3984		* patches stage1 right after the JMP location, replacing
3985		* other instructions such as JMPs for NOOPs. So, relax the
3986		* check a little bit by skipping those different bytes.
3987		*/
3988		if ((bootSect[offset + 1] == NOOP_OPCODE)
3989		&& (bootSect[offset + 2] == NOOP_OPCODE)) {
3990		offset = offset + 3;
3991		}
3992		} else if (boot[0] == 0xe8 || boot[0] == 0xe9) {
3993		offset = (boot[2] << 8) + boot[1] + 2;
3994		} else {
3995		return 0;
3996		}
3997
3998		if (memcmp(boot + offset, bootSect + offset, CODE_SEG_SIZE))
3999		return 0;
4000
4001		return 2;
4002		}
4003
4004		int checkLiloOnRaid(char *mdDev, const unsigned char *boot)
4005		{
4006		int fd;
4007		char buf[65536];
4008		char *end;
4009		char *chptr;
4010		char *chptr2;
4011		int rc;
4012
4013		/* it's on raid; we need to parse /proc/mdstat and check all of the
4014		*raw* devices listed in there */
4015
4016		if (!strncmp(mdDev, "/dev/", 5))
4017		mdDev += 5;
4018
4019		if ((fd = open("/proc/mdstat", O_RDONLY)) < 0) {
4020		fprintf(stderr, _("grubby: failed to open /proc/mdstat: %s\n"),
4021		strerror(errno));
4022		return 2;
4023		}
4024
4025		rc = read(fd, buf, sizeof(buf) - 1);
4026		if (rc < 0 || rc == (sizeof(buf) - 1)) {
4027		fprintf(stderr, _("grubby: failed to read /proc/mdstat: %s\n"),
4028		strerror(errno));
4029		close(fd);
4030		return 2;
4031		}
4032		close(fd);
4033		buf[rc] = '\0';
4034
4035		chptr = buf;
4036		while (*chptr) {
4037		end = strchr(chptr, '\n');
4038		if (!end)
4039		break;
4040		*end = '\0';
4041
4042		if (!strncmp(chptr, mdDev, strlen(mdDev)) &&
4043		chptr[strlen(mdDev)] == ' ') {
4044
4045		/* found the device */
4046		while (*chptr && *chptr != ':')
4047		chptr++;
4048		chptr++;
4049		while (*chptr && isspace(*chptr))
4050		chptr++;
4051
4052		/* skip the "active" bit */
4053		while (*chptr && !isspace(*chptr))
4054		chptr++;
4055		while (*chptr && isspace(*chptr))
4056		chptr++;
4057
4058		/* skip the raid level */
4059		while (*chptr && !isspace(*chptr))
4060		chptr++;
4061		while (*chptr && isspace(*chptr))
4062		chptr++;
4063
4064		/* everything else is partition stuff */
4065		while (*chptr) {
4066		chptr2 = chptr;
4067		while (*chptr2 && *chptr2 != '[')
4068		chptr2++;
4069		if (!*chptr2)
4070		break;
4071
4072		/* yank off the numbers at the end */
4073		chptr2--;
4074		while (isdigit(*chptr2) && chptr2 > chptr)
4075		chptr2--;
4076		chptr2++;
4077		*chptr2 = '\0';
4078
4079		/* Better, now we need the /dev/ back. We're
4080		* done with everything before this point, so
4081		* we can just put the /dev/ part there.
4082		* There will always be room. */
4083		memcpy(chptr - 5, "/dev/", 5);
4084		rc = checkDeviceBootloader(chptr - 5, boot);
4085		if (rc != 2) {
4086		return rc;
4087		}
4088
4089		chptr = chptr2 + 1;
4090		/* skip the [11] bit */
4091		while (*chptr && !isspace(*chptr))
4092		chptr++;
4093		/* and move to the next one */
4094		while (*chptr && isspace(*chptr))
4095		chptr++;
4096		}
4097
4098		/*  we're good to go */
4099		return 2;
4100		}
4101
4102		chptr = end + 1;
4103		}
4104
4105		fprintf(stderr,
4106		_("grubby: raid device /dev/%s not found in /proc/mdstat\n"),
4107		mdDev);
4108		return 0;
4109		}
4110
4111		int checkForLilo(struct grubConfig *config)
4112		{
4113		int fd;
4114		unsigned char boot[512];
4115		struct singleLine *line;
4116
4117		for (line = config->theLines; line; line = line->next)
4118		if (line->type == LT_BOOT)
4119		break;
4120
4121		if (!line) {
4122		fprintf(stderr,
4123		_
4124		("grubby: no boot line found in lilo configuration\n"));
4125		return 1;
4126		}
4127
4128		if (line->numElements != 2)
4129		return 1;
4130
4131		fd = open("/boot/boot.b", O_RDONLY);
4132		if (fd < 0) {
4133		fprintf(stderr, _("grubby: unable to open %s: %s\n"),
4134		"/boot/boot.b", strerror(errno));
4135		return 1;
4136		}
4137
4138		if (read(fd, boot, 512) != 512) {
4139		fprintf(stderr, _("grubby: unable to read %s: %s\n"),
4140		"/boot/boot.b", strerror(errno));
4141		return 1;
4142		}
4143		close(fd);
4144
4145		if (!strncmp("/dev/md", line->elements[1].item, 7))
4146		return checkLiloOnRaid(line->elements[1].item, boot);
4147
4148		return checkDeviceBootloader(line->elements[1].item, boot);
4149		}
4150
4151		int checkForGrub2(struct grubConfig *config)
4152		{
4153		if (!access("/etc/grub.d/", R_OK))
4154		return 2;
4155
4156		return 1;
4157		}
4158
4159		int checkForGrub(struct grubConfig *config)
4160		{
4161		int fd;
4162		unsigned char bootSect[512];
4163		char *boot;
4164		int onSuse = isSuseSystem();
4165
4166		if (onSuse) {
4167		if (parseSuseGrubConf(NULL, &boot))
4168		return 0;
4169		} else {
4170		if (parseSysconfigGrub(NULL, &boot))
4171		return 0;
4172		}
4173
4174		/* assume grub is not installed -- not an error condition */
4175		if (!boot)
4176		return 0;
4177
4178		fd = open("/boot/grub/stage1", O_RDONLY);
4179		if (fd < 0)
4180		/* this doesn't exist if grub hasn't been installed */
4181		return 0;
4182
4183		if (read(fd, bootSect, 512) != 512) {
4184		fprintf(stderr, _("grubby: unable to read %s: %s\n"),
4185		"/boot/grub/stage1", strerror(errno));
4186		close(fd);
4187		return 1;
4188		}
4189		close(fd);
4190
4191		/* The more elaborate checks do not work on SuSE. The checks done
4192		* seem to be reasonble (at least for now), so just return success
4193		*/
4194		if (onSuse)
4195		return 2;
4196
4197		return checkDeviceBootloader(boot, bootSect);
4198		}
4199
4200		int checkForExtLinux(struct grubConfig *config)
4201		{
4202		int fd;
4203		unsigned char bootSect[512];
4204		char *boot;
4205		char executable[] = "/boot/extlinux/extlinux";
4206
4207		printf("entered: checkForExtLinux()\n");
4208
4209		if (parseSysconfigGrub(NULL, &boot))
4210		return 0;
4211
4212		/* assume grub is not installed -- not an error condition */
4213		if (!boot)
4214		return 0;
4215
4216		fd = open(executable, O_RDONLY);
4217		if (fd < 0)
4218		/* this doesn't exist if grub hasn't been installed */
4219		return 0;
4220
4221		if (read(fd, bootSect, 512) != 512) {
4222		fprintf(stderr, _("grubby: unable to read %s: %s\n"),
4223		executable, strerror(errno));
4224		return 1;
4225		}
4226		close(fd);
4227
4228		return checkDeviceBootloader(boot, bootSect);
4229		}
4230
4231		int checkForYaboot(struct grubConfig *config)
4232		{
4233		/*
4234		* This is a simplistic check that we consider good enough for own puporses
4235		*
4236		* If we were to properly check if yaboot is *installed* we'd need to:
4237		* 1) get the system boot device (LT_BOOT)
4238		* 2) considering it's a raw filesystem, check if the yaboot binary matches
4239		*    the content on the boot device
4240		* 3) if not, copy the binary to a temporary file and run "addnote" on it
4241		* 4) check again if binary and boot device contents match
4242		*/
4243		if (!access("/etc/yaboot.conf", R_OK))
4244		return 2;
4245
4246		return 1;
4247		}
4248
4249		int checkForElilo(struct grubConfig *config)
4250		{
4251		if (!access("/etc/elilo.conf", R_OK))
4252		return 2;
4253
4254		return 1;
4255		}
4256
4257		static char *getRootSpecifier(char *str)
4258		{
4259		char *idx, *rootspec = NULL;
4260
4261		if (*str == '(') {
4262		idx = rootspec = strdup(str);
4263		while (*idx && (*idx != ')') && (!isspace(*idx)))
4264		idx++;
4265		*(++idx) = '\0';
4266		}
4267		return rootspec;
4268		}
4269
4270		static char *getInitrdVal(struct grubConfig *config,
4271		const char *prefix, struct singleLine *tmplLine,
4272		const char *newKernelInitrd,
4273		const char **extraInitrds, int extraInitrdCount)
4274		{
4275		char *initrdVal, *end;
4276		int i;
4277		size_t totalSize;
4278		size_t prefixLen;
4279		char separatorChar;
4280
4281		prefixLen = strlen(prefix);
4282		totalSize = strlen(newKernelInitrd) - prefixLen + 1 /* \0 */ ;
4283
4284		for (i = 0; i < extraInitrdCount; i++) {
4285		totalSize += sizeof(separatorChar);
4286		totalSize += strlen(extraInitrds[i]) - prefixLen;
4287		}
4288
4289		initrdVal = end = malloc(totalSize);
4290
4291		end = stpcpy(end, newKernelInitrd + prefixLen);
4292
4293		separatorChar = getKeywordByType(LT_INITRD, config->cfi)->separatorChar;
4294		for (i = 0; i < extraInitrdCount; i++) {
4295		const char *extraInitrd;
4296		int j;
4297
4298		extraInitrd = extraInitrds[i] + prefixLen;
4299		/* Don't add entries that are already there */
4300		if (tmplLine != NULL) {
4301		for (j = 2; j < tmplLine->numElements; j++)
4302		if (strcmp
4303		(extraInitrd,
4304		tmplLine->elements[j].item) == 0)
4305		break;
4306
4307		if (j != tmplLine->numElements)
4308		continue;
4309		}
4310
4311		*end++ = separatorChar;
4312		end = stpcpy(end, extraInitrd);
4313		}
4314
4315		return initrdVal;
4316		}
4317
4318		int addNewKernel(struct grubConfig *config, struct singleEntry *template,
4319		const char *prefix,
4320		const char *newKernelPath, const char *newKernelTitle,
4321		const char *newKernelArgs, const char *newKernelInitrd,
4322		const char **extraInitrds, int extraInitrdCount,
4323		const char *newMBKernel, const char *newMBKernelArgs,
4324		const char *newDevTreePath, int newIndex)
4325		{
4326		struct singleEntry *new, *entry, *prev = NULL;
4327		struct singleLine *newLine = NULL, *tmplLine = NULL, *masterLine = NULL;
4328		int needs;
4329		char *indexs;
4330		char *chptr;
4331		int rc;
4332
4333		if (!newKernelPath)
4334		return 0;
4335
4336		rc = asprintf(&indexs, "%d", newIndex);
4337		if (rc < 0)
4338		return 1;
4339
4340		/* if the newKernelTitle is too long silently munge it into something
4341		* we can live with. truncating is first check, then we'll just mess with
4342		* it until it looks better */
4343		if (config->cfi->maxTitleLength &&
4344		(strlen(newKernelTitle) > config->cfi->maxTitleLength)) {
4345		char *buf = alloca(config->cfi->maxTitleLength + 7);
4346		char *numBuf = alloca(config->cfi->maxTitleLength + 1);
4347		int i = 1;
4348
4349		sprintf(buf, "TITLE=%.*s", config->cfi->maxTitleLength,
4350		newKernelTitle);
4351		while (findEntryByPath(config, buf, NULL, NULL)) {
4352		sprintf(numBuf, "%d", i++);
4353		strcpy(buf + strlen(buf) - strlen(numBuf), numBuf);
4354		}
4355
4356		newKernelTitle = buf + 6;
4357		}
4358
4359		new = malloc(sizeof(*new));
4360		new->skip = 0;
4361		new->multiboot = 0;
4362		new->lines = NULL;
4363		entry = config->entries;
4364		for (unsigned int i = 0; i < newIndex; i++) {
4365		if (!entry)
4366		break;
4367		prev = entry;
4368		entry = entry->next;
4369		}
4370		new->next = entry;
4371
4372		if (prev)
4373		prev->next = new;
4374		else
4375		config->entries = new;
4376
4377		/* copy/update from the template */
4378		needs = NEED_KERNEL | NEED_TITLE;
4379		if (newKernelInitrd)
4380		needs |= NEED_INITRD;
4381		if (newMBKernel) {
4382		needs |= NEED_MB;
4383		new->multiboot = 1;
4384		}
4385		if (newDevTreePath && getKeywordByType(LT_DEVTREE, config->cfi))
4386		needs |= NEED_DEVTREE;
4387
4388		if (template) {
4389		for (masterLine = template->lines;
4390		masterLine && (tmplLine = lineDup(masterLine));
4391		lineFree(tmplLine), masterLine = masterLine->next) {
4392		dbgPrintf("addNewKernel processing %d\n",
4393		tmplLine->type);
4394
4395		/* skip comments */
4396		chptr = tmplLine->indent;
4397		while (*chptr && isspace(*chptr))
4398		chptr++;
4399		if (*chptr == '#')
4400		continue;
4401
4402		if (iskernel(tmplLine->type)
4403		&& tmplLine->numElements >= 2) {
4404		if (!template->multiboot && (needs & NEED_MB)) {
4405		/* it's not a multiboot template and
4406		* this is the kernel line.  Try to
4407		* be intelligent about inserting the
4408		* hypervisor at the same time.
4409		*/
4410		if (config->cfi->mbHyperFirst) {
4411		/* insert the hypervisor first */
4412		newLine =
4413		addLine(new, config->cfi,
4414		LT_HYPER,
4415		tmplLine->indent,
4416		newMBKernel +
4417		strlen(prefix));
4418		/* set up for adding the
4419		* kernel line */
4420		free(tmplLine->indent);
4421		tmplLine->indent =
4422		strdup(config->
4423		secondaryIndent);
4424		needs &= ~NEED_MB;
4425		}
4426		if (needs & NEED_KERNEL) {
4427		/* use addLineTmpl to
4428		* preserve line elements,
4429		* otherwise we could just
4430		* call addLine.
4431		* Unfortunately this means
4432		* making some changes to the
4433		* template such as the
4434		* indent change above and
4435		* the type change below.
4436		*/
4437		struct keywordTypes *mbm_kw =
4438		getKeywordByType
4439		(LT_MBMODULE, config->cfi);
4440		if (mbm_kw) {
4441		tmplLine->type =
4442		LT_MBMODULE;
4443		free(tmplLine->
4444		elements[0].item);
4445		tmplLine->elements[0].
4446		item =
4447		strdup(mbm_kw->key);
4448		}
4449		newLine =
4450		addLineTmpl(new, tmplLine,
4451		newLine,
4452		newKernelPath +
4453		strlen(prefix),
4454		config->cfi);
4455		needs &= ~NEED_KERNEL;
4456		}
4457		if (needs & NEED_MB) { /* !mbHyperFirst */
4458		newLine =
4459		addLine(new, config->cfi,
4460		LT_HYPER,
4461		config->
4462		secondaryIndent,
4463		newMBKernel +
4464		strlen(prefix));
4465		needs &= ~NEED_MB;
4466		}
4467		} else if (needs & NEED_KERNEL) {
4468		newLine =
4469		addLineTmpl(new, tmplLine, newLine,
4470		newKernelPath +
4471		strlen(prefix),
4472		config->cfi);
4473		needs &= ~NEED_KERNEL;
4474		}
4475
4476		} else if (tmplLine->type == LT_HYPER &&
4477		tmplLine->numElements >= 2) {
4478		if (needs & NEED_MB) {
4479		newLine =
4480		addLineTmpl(new, tmplLine, newLine,
4481		newMBKernel +
4482		strlen(prefix),
4483		config->cfi);
4484		needs &= ~NEED_MB;
4485		}
4486
4487		} else if (tmplLine->type == LT_MBMODULE &&
4488		tmplLine->numElements >= 2) {
4489		if (new->multiboot) {
4490		if (needs & NEED_KERNEL) {
4491		newLine =
4492		addLineTmpl(new, tmplLine,
4493		newLine,
4494		newKernelPath +
4495		strlen(prefix),
4496		config->cfi);
4497		needs &= ~NEED_KERNEL;
4498		} else if (config->cfi->mbInitRdIsModule
4499		&& (needs & NEED_INITRD)) {
4500		char *initrdVal;
4501		initrdVal =
4502		getInitrdVal(config, prefix,
4503		tmplLine,
4504		newKernelInitrd,
4505		extraInitrds,
4506		extraInitrdCount);
4507		newLine =
4508		addLineTmpl(new, tmplLine,
4509		newLine,
4510		initrdVal,
4511		config->cfi);
4512		free(initrdVal);
4513		needs &= ~NEED_INITRD;
4514		}
4515		} else if (needs & NEED_KERNEL) {
4516		/* template is multi but new is not,
4517		* insert the kernel in the first
4518		* module slot
4519		*/
4520		tmplLine->type =
4521		preferredLineType(LT_KERNEL,
4522		config->cfi);
4523		free(tmplLine->elements[0].item);
4524		tmplLine->elements[0].item =
4525		strdup(getKeywordByType
4526		(tmplLine->type,
4527		config->cfi)->key);
4528		newLine =
4529		addLineTmpl(new, tmplLine, newLine,
4530		newKernelPath +
4531		strlen(prefix),
4532		config->cfi);
4533		needs &= ~NEED_KERNEL;
4534		} else if (needs & NEED_INITRD) {
4535		char *initrdVal;
4536		/* template is multi but new is not,
4537		* insert the initrd in the second
4538		* module slot
4539		*/
4540		tmplLine->type =
4541		preferredLineType(LT_INITRD,
4542		config->cfi);
4543		free(tmplLine->elements[0].item);
4544		tmplLine->elements[0].item =
4545		strdup(getKeywordByType
4546		(tmplLine->type,
4547		config->cfi)->key);
4548		initrdVal =
4549		getInitrdVal(config, prefix,
4550		tmplLine,
4551		newKernelInitrd,
4552		extraInitrds,
4553		extraInitrdCount);
4554		newLine =
4555		addLineTmpl(new, tmplLine, newLine,
4556		initrdVal, config->cfi);
4557		free(initrdVal);
4558		needs &= ~NEED_INITRD;
4559		}
4560
4561		} else if (isinitrd(tmplLine->type)
4562		&& tmplLine->numElements >= 2) {
4563		if (needs & NEED_INITRD && new->multiboot
4564		&& !template->multiboot
4565		&& config->cfi->mbInitRdIsModule) {
4566		/* make sure we don't insert the
4567		* module initrd before the module
4568		* kernel... if we don't do it here,
4569		* it will be inserted following the
4570		* template.
4571		*/
4572		if (!needs & NEED_KERNEL) {
4573		char *initrdVal;
4574
4575		initrdVal =
4576		getInitrdVal(config, prefix,
4577		tmplLine,
4578		newKernelInitrd,
4579		extraInitrds,
4580		extraInitrdCount);
4581		newLine =
4582		addLine(new, config->cfi,
4583		LT_MBMODULE,
4584		config->
4585		secondaryIndent,
4586		initrdVal);
4587		free(initrdVal);
4588		needs &= ~NEED_INITRD;
4589		}
4590		} else if (needs & NEED_INITRD) {
4591		char *initrdVal;
4592		initrdVal =
4593		getInitrdVal(config, prefix,
4594		tmplLine,
4595		newKernelInitrd,
4596		extraInitrds,
4597		extraInitrdCount);
4598		newLine =
4599		addLineTmpl(new, tmplLine, newLine,
4600		initrdVal, config->cfi);
4601		free(initrdVal);
4602		needs &= ~NEED_INITRD;
4603		}
4604
4605		} else if (tmplLine->type == LT_MENUENTRY &&
4606		(needs & NEED_TITLE)) {
4607		requote(tmplLine, config->cfi);
4608		char *nkt = malloc(strlen(newKernelTitle) + 3);
4609		strcpy(nkt, "'");
4610		strcat(nkt, newKernelTitle);
4611		strcat(nkt, "'");
4612		newLine =
4613		addLineTmpl(new, tmplLine, newLine, nkt,
4614		config->cfi);
4615		free(nkt);
4616		needs &= ~NEED_TITLE;
4617		} else if (tmplLine->type == LT_TITLE &&
4618		(needs & NEED_TITLE)) {
4619		if (tmplLine->numElements >= 2) {
4620		newLine =
4621		addLineTmpl(new, tmplLine, newLine,
4622		newKernelTitle,
4623		config->cfi);
4624		needs &= ~NEED_TITLE;
4625		} else if (tmplLine->numElements == 1 &&
4626		config->cfi->titleBracketed) {
4627		/* addLineTmpl doesn't handle
4628		* titleBracketed */
4629		newLine =
4630		addLine(new, config->cfi, LT_TITLE,
4631		tmplLine->indent,
4632		newKernelTitle);
4633		needs &= ~NEED_TITLE;
4634		}
4635		} else if (tmplLine->type == LT_ECHO) {
4636		requote(tmplLine, config->cfi);
4637		static const char *prefix = "'Loading ";
4638		if (tmplLine->numElements > 1 &&
4639		strstr(tmplLine->elements[1].item, prefix)
4640		&& masterLine->next
4641		&& iskernel(masterLine->next->type)) {
4642		char *newTitle =
4643		malloc(strlen(prefix) +
4644		strlen(newKernelTitle) + 2);
4645
4646		strcpy(newTitle, prefix);
4647		strcat(newTitle, newKernelTitle);
4648		strcat(newTitle, "'");
4649		newLine =
4650		addLine(new, config->cfi, LT_ECHO,
4651		tmplLine->indent, newTitle);
4652		free(newTitle);
4653		} else {
4654		/* pass through other lines from the
4655		* template */
4656		newLine =
4657		addLineTmpl(new, tmplLine, newLine,
4658		NULL, config->cfi);
4659		}
4660		} else if (tmplLine->type == LT_DEVTREE &&
4661		tmplLine->numElements == 2
4662		&& newDevTreePath) {
4663		newLine =
4664		addLineTmpl(new, tmplLine, newLine,
4665		newDevTreePath + strlen(prefix),
4666		config->cfi);
4667		needs &= ~NEED_DEVTREE;
4668		} else if (tmplLine->type == LT_ENTRY_END
4669		&& needs & NEED_DEVTREE) {
4670		const char *ndtp = newDevTreePath;
4671		if (!strncmp
4672		(newDevTreePath, prefix, strlen(prefix)))
4673		ndtp += strlen(prefix);
4674		newLine = addLine(new, config->cfi, LT_DEVTREE,
4675		config->secondaryIndent,
4676		ndtp);
4677		needs &= ~NEED_DEVTREE;
4678		newLine =
4679		addLineTmpl(new, tmplLine, newLine, NULL,
4680		config->cfi);
4681		} else {
4682		/* pass through other lines from the template */
4683		newLine =
4684		addLineTmpl(new, tmplLine, newLine, NULL,
4685		config->cfi);
4686		}
4687		}
4688
4689		} else {
4690		/* don't have a template, so start the entry with the
4691		* appropriate starting line
4692		*/
4693		switch (config->cfi->entryStart) {
4694		case LT_KERNEL:
4695		case LT_KERNEL_EFI:
4696		case LT_KERNEL_16:
4697		if (new->multiboot && config->cfi->mbHyperFirst) {
4698		/* fall through to LT_HYPER */
4699		} else {
4700		newLine = addLine(new, config->cfi,
4701		preferredLineType(LT_KERNEL,
4702		config->
4703		cfi),
4704		config->primaryIndent,
4705		newKernelPath +
4706		strlen(prefix));
4707		needs &= ~NEED_KERNEL;
4708		break;
4709		}
4710
4711		case LT_HYPER:
4712		newLine = addLine(new, config->cfi, LT_HYPER,
4713		config->primaryIndent,
4714		newMBKernel + strlen(prefix));
4715		needs &= ~NEED_MB;
4716		break;
4717
4718		case LT_MENUENTRY:{
4719		char *nkt = malloc(strlen(newKernelTitle) + 3);
4720		strcpy(nkt, "'");
4721		strcat(nkt, newKernelTitle);
4722		strcat(nkt, "'");
4723		newLine =
4724		addLine(new, config->cfi, LT_MENUENTRY,
4725		config->primaryIndent, nkt);
4726		free(nkt);
4727		needs &= ~NEED_TITLE;
4728		needs |= NEED_END;
4729		break;
4730		}
4731		case LT_TITLE:
4732		if (useextlinuxmenu != 0) { // We just need useextlinuxmenu to not be zero (set above)
4733		char *templabel;
4734		int x = 0, y = 0;
4735
4736		templabel = strdup(newKernelTitle);
4737		while (templabel[x]) {
4738		if (templabel[x] == ' ') {
4739		y = x;
4740		while (templabel[y]) {
4741		templabel[y] =
4742		templabel[y + 1];
4743		y++;
4744		}
4745		}
4746		x++;
4747		}
4748		newLine = addLine(new, config->cfi, LT_TITLE,
4749		config->primaryIndent,
4750		templabel);
4751		free(templabel);
4752		} else {
4753		newLine = addLine(new, config->cfi, LT_TITLE,
4754		config->primaryIndent,
4755		newKernelTitle);
4756		}
4757		needs &= ~NEED_TITLE;
4758		break;
4759
4760		default:
4761		abort();
4762		}
4763		}
4764
4765		struct singleLine *endLine = NULL;
4766		endLine = getLineByType(LT_ENTRY_END, new->lines);
4767		if (endLine) {
4768		removeLine(new, endLine);
4769		needs |= NEED_END;
4770		}
4771
4772		/* add the remainder of the lines, i.e. those that either
4773		* weren't present in the template, or in the case of no template,
4774		* all the lines following the entryStart.
4775		*/
4776		if (needs & NEED_TITLE) {
4777		newLine = addLine(new, config->cfi, LT_TITLE,
4778		config->secondaryIndent, newKernelTitle);
4779		needs &= ~NEED_TITLE;
4780		}
4781		if ((needs & NEED_MB) && config->cfi->mbHyperFirst) {
4782		newLine = addLine(new, config->cfi, LT_HYPER,
4783		config->secondaryIndent,
4784		newMBKernel + strlen(prefix));
4785		needs &= ~NEED_MB;
4786		}
4787		if (needs & NEED_KERNEL) {
4788		newLine = addLine(new, config->cfi,
4789		(new->multiboot
4790		&& getKeywordByType(LT_MBMODULE,
4791		config->cfi))
4792		? LT_MBMODULE : preferredLineType(LT_KERNEL,
4793		config->
4794		cfi),
4795		config->secondaryIndent,
4796		newKernelPath + strlen(prefix));
4797		needs &= ~NEED_KERNEL;
4798		}
4799		if (needs & NEED_MB) {
4800		newLine = addLine(new, config->cfi, LT_HYPER,
4801		config->secondaryIndent,
4802		newMBKernel + strlen(prefix));
4803		needs &= ~NEED_MB;
4804		}
4805		if (needs & NEED_INITRD) {
4806		char *initrdVal;
4807		initrdVal =
4808		getInitrdVal(config, prefix, NULL, newKernelInitrd,
4809		extraInitrds, extraInitrdCount);
4810		newLine =
4811		addLine(new, config->cfi,
4812		(new->multiboot
4813		&& getKeywordByType(LT_MBMODULE, config->cfi))
4814		? LT_MBMODULE : preferredLineType(LT_INITRD,
4815		config->cfi),
4816		config->secondaryIndent, initrdVal);
4817		free(initrdVal);
4818		needs &= ~NEED_INITRD;
4819		}
4820		if (needs & NEED_DEVTREE) {
4821		newLine = addLine(new, config->cfi, LT_DEVTREE,
4822		config->secondaryIndent, newDevTreePath);
4823		needs &= ~NEED_DEVTREE;
4824		}
4825
4826		/* NEEDS_END must be last on bootloaders that need it... */
4827		if (needs & NEED_END) {
4828		newLine = addLine(new, config->cfi, LT_ENTRY_END,
4829		config->secondaryIndent, NULL);
4830		needs &= ~NEED_END;
4831		}
4832
4833		if (needs) {
4834		printf(_("grubby: needs=%d, aborting\n"), needs);
4835		abort();
4836		}
4837
4838		if (updateImage(config, indexs, prefix, newKernelArgs, NULL,
4839		newMBKernelArgs, NULL)) {
4840		config->isModified = 1;
4841		return 1;
4842		}
4843
4844		return 0;
4845		}
4846
4847		int main(int argc, const char **argv)
4848		{
4849		poptContext optCon;
4850		const char *grubConfig = NULL;
4851		char *outputFile = NULL;
4852		int arg = 0;
4853		int flags = 0;
4854		int badImageOkay = 0;
4855		int configureGrub2 = 0;
4856		int configureLilo = 0, configureELilo = 0, configureGrub = 0;
4857		int configureYaboot = 0, configureSilo = 0, configureZipl = 0;
4858		int configureExtLinux = 0;
4859		int bootloaderProbe = 0;
4860		int extraInitrdCount = 0;
4861		char *updateKernelPath = NULL;
4862		char *newKernelPath = NULL;
4863		char *removeKernelPath = NULL;
4864		char *newKernelArgs = NULL;
4865		char *newKernelInitrd = NULL;
4866		char *newKernelTitle = NULL;
4867		char *newDevTreePath = NULL;
4868		char *newMBKernel = NULL;
4869		char *newMBKernelArgs = NULL;
4870		int newIndex = 0;
4871		char *removeMBKernelArgs = NULL;
4872		char *removeMBKernel = NULL;
4873		char *bootPrefix = NULL;
4874		char *defaultKernel = NULL;
4875		char *removeArgs = NULL;
4876		char *kernelInfo = NULL;
4877		char *extraInitrds[MAX_EXTRA_INITRDS] = { NULL };
4878		char *envPath = NULL;
4879		const char *chptr = NULL;
4880		struct configFileInfo *cfi = NULL;
4881		struct grubConfig *config;
4882		struct singleEntry *template = NULL;
4883		int copyDefault = 0, makeDefault = 0;
4884		int displayDefault = 0;
4885		int displayDefaultIndex = 0;
4886		int displayDefaultTitle = 0;
4887		int defaultIndex = -1;
4888		struct poptOption options[] = {
4889		{"add-kernel", 0, POPT_ARG_STRING, &newKernelPath, 0,
4890		_("add an entry for the specified kernel"), _("kernel-path")},
4891		{"add-multiboot", 0, POPT_ARG_STRING, &newMBKernel, 0,
4892		_("add an entry for the specified multiboot kernel"), NULL},
4893		{"args", 0, POPT_ARG_STRING, &newKernelArgs, 0,
4894		_("default arguments for the new kernel or new arguments for "
4895		"kernel being updated"), _("args")},
4896		{"mbargs", 0, POPT_ARG_STRING, &newMBKernelArgs, 0,
4897		_("default arguments for the new multiboot kernel or "
4898		"new arguments for multiboot kernel being updated"), NULL},
4899		{"bad-image-okay", 0, 0, &badImageOkay, 0,
4900		_
4901		("don't sanity check images in boot entries (for testing only)"),
4902		NULL},
4903		{"boot-filesystem", 0, POPT_ARG_STRING, &bootPrefix, 0,
4904		_
4905		("filesystem which contains /boot directory (for testing only)"),
4906		_("bootfs")},
4907		#if defined(__i386__) || defined(__x86_64__) || defined (__powerpc64__) || defined (__ia64__)
4908		{"bootloader-probe", 0, POPT_ARG_NONE, &bootloaderProbe, 0,
4909		_("check which bootloader is installed on boot sector")},
4910		#endif
4911		{"config-file", 'c', POPT_ARG_STRING, &grubConfig, 0,
4912		_("path to grub config file to update (\"-\" for stdin)"),
4913		_("path")},
4914		{"copy-default", 0, 0, &copyDefault, 0,
4915		_("use the default boot entry as a template for the new entry "
4916		"being added; if the default is not a linux image, or if "
4917		"the kernel referenced by the default image does not exist, "
4918		"the first linux entry whose kernel does exist is used as the "
4919		"template"), NULL},
4920		{"debug", 0, 0, &debug, 0,
4921		_("print debugging information for failures")},
4922		{"default-kernel", 0, 0, &displayDefault, 0,
4923		_("display the path of the default kernel")},
4924		{"default-index", 0, 0, &displayDefaultIndex, 0,
4925		_("display the index of the default kernel")},
4926		{"default-title", 0, 0, &displayDefaultTitle, 0,
4927		_("display the title of the default kernel")},
4928		{"devtree", 0, POPT_ARG_STRING, &newDevTreePath, 0,
4929		_("device tree file for new stanza"), _("dtb-path")},
4930		{"devtreedir", 0, POPT_ARG_STRING, &newDevTreePath, 0,
4931		_("device tree directory for new stanza"), _("dtb-path")},
4932		{"elilo", 0, POPT_ARG_NONE, &configureELilo, 0,
4933		_("configure elilo bootloader")},
4934		{"efi", 0, POPT_ARG_NONE, &isEfi, 0,
4935		_("force grub2 stanzas to use efi")},
4936		{"env", 0, POPT_ARG_STRING, &envPath, 0,
4937		_("path for environment data"),
4938		_("path")},
4939		{"extlinux", 0, POPT_ARG_NONE, &configureExtLinux, 0,
4940		_("configure extlinux bootloader (from syslinux)")},
4941		{"grub", 0, POPT_ARG_NONE, &configureGrub, 0,
4942		_("configure grub bootloader")},
4943		{"grub2", 0, POPT_ARG_NONE, &configureGrub2, 0,
4944		_("configure grub2 bootloader")},
4945		{"info", 0, POPT_ARG_STRING, &kernelInfo, 0,
4946		_("display boot information for specified kernel"),
4947		_("kernel-path")},
4948		{"initrd", 0, POPT_ARG_STRING, &newKernelInitrd, 0,
4949		_("initrd image for the new kernel"), _("initrd-path")},
4950		{"extra-initrd", 'i', POPT_ARG_STRING, NULL, 'i',
4951		_
4952		("auxiliary initrd image for things other than the new kernel"),
4953		_("initrd-path")},
4954		{"lilo", 0, POPT_ARG_NONE, &configureLilo, 0,
4955		_("configure lilo bootloader")},
4956		{"make-default", 0, 0, &makeDefault, 0,
4957		_("make the newly added entry the default boot entry"), NULL},
4958		{"output-file", 'o', POPT_ARG_STRING, &outputFile, 0,
4959		_("path to output updated config file (\"-\" for stdout)"),
4960		_("path")},
4961		{"remove-args", 0, POPT_ARG_STRING, &removeArgs, 0,
4962		_("remove kernel arguments"), NULL},
4963		{"remove-mbargs", 0, POPT_ARG_STRING, &removeMBKernelArgs, 0,
4964		_("remove multiboot kernel arguments"), NULL},
4965		{"remove-kernel", 0, POPT_ARG_STRING, &removeKernelPath, 0,
4966		_("remove all entries for the specified kernel"),
4967		_("kernel-path")},
4968		{"remove-multiboot", 0, POPT_ARG_STRING, &removeMBKernel, 0,
4969		_("remove all entries for the specified multiboot kernel"),
4970		NULL},
4971		{"set-default", 0, POPT_ARG_STRING, &defaultKernel, 0,
4972		_("make the first entry referencing the specified kernel "
4973		"the default"), _("kernel-path")},
4974		{"set-default-index", 0, POPT_ARG_INT, &defaultIndex, 0,
4975		_("make the given entry index the default entry"),
4976		_("entry-index")},
4977		{"set-index", 0, POPT_ARG_INT, &newIndex, 0,
4978		_("use the given index when creating a new entry"),
4979		_("entry-index")},
4980		{"silo", 0, POPT_ARG_NONE, &configureSilo, 0,
4981		_("configure silo bootloader")},
4982		{"title", 0, POPT_ARG_STRING, &newKernelTitle, 0,
4983		_("title to use for the new kernel entry"), _("entry-title")},
4984		{"update-kernel", 0, POPT_ARG_STRING, &updateKernelPath, 0,
4985		_("updated information for the specified kernel"),
4986		_("kernel-path")},
4987		{"version", 'v', 0, NULL, 'v',
4988		_("print the version of this program and exit"), NULL},
4989		{"yaboot", 0, POPT_ARG_NONE, &configureYaboot, 0,
4990		_("configure yaboot bootloader")},
4991		{"zipl", 0, POPT_ARG_NONE, &configureZipl, 0,
4992		_("configure zipl bootloader")},
4993		POPT_AUTOHELP {0, 0, 0, 0, 0}
4994		};
4995
4996		useextlinuxmenu = 0;
4997
4998		int i = 0;
4999		for (int j = 1; j < argc; j++)
5000		i += strlen(argv[j]) + 1;
5001		saved_command_line = malloc(i);
5002		if (!saved_command_line) {
5003		fprintf(stderr, "grubby: %m\n");
5004		exit(1);
5005		}
5006		saved_command_line[0] = '\0';
5007		for (int j = 1; j < argc; j++) {
5008		strcat(saved_command_line, argv[j]);
5009		strncat(saved_command_line, j == argc - 1 ? "" : " ", 1);
5010		}
5011
5012		optCon = poptGetContext("grubby", argc, argv, options, 0);
5013		poptReadDefaultConfig(optCon, 1);
5014
5015		while ((arg = poptGetNextOpt(optCon)) >= 0) {
5016		switch (arg) {
5017		case 'v':
5018		printf("grubby version %s\n", VERSION);
5019		exit(0);
5020		break;
5021		case 'i':
5022		if (extraInitrdCount < MAX_EXTRA_INITRDS) {
5023		extraInitrds[extraInitrdCount++] =
5024		strdup(poptGetOptArg(optCon));
5025		} else {
5026		fprintf(stderr,
5027		_
5028		("grubby: extra initrd maximum is %d\n"),
5029		extraInitrdCount);
5030		return 1;
5031		}
5032		break;
5033		}
5034		}
5035
5036		if (arg < -1) {
5037		fprintf(stderr, _("grubby: bad argument %s: %s\n"),
5038		poptBadOption(optCon, POPT_BADOPTION_NOALIAS),
5039		poptStrerror(arg));
5040		return 1;
5041		}
5042
5043		if ((chptr = poptGetArg(optCon))) {
5044		fprintf(stderr, _("grubby: unexpected argument %s\n"), chptr);
5045		return 1;
5046		}
5047
5048		if ((configureLilo + configureGrub2 + configureGrub + configureELilo +
5049		configureYaboot + configureSilo + configureZipl +
5050		configureExtLinux) > 1) {
5051		fprintf(stderr,
5052		_("grubby: cannot specify multiple bootloaders\n"));
5053		return 1;
5054		} else if (bootloaderProbe && grubConfig) {
5055		fprintf(stderr,
5056		_
5057		("grubby: cannot specify config file with --bootloader-probe\n"));
5058		return 1;
5059		} else if (configureGrub2) {
5060		cfi = &grub2ConfigType;
5061		if (envPath)
5062		cfi->envFile = envPath;
5063		} else if (configureLilo) {
5064		cfi = &liloConfigType;
5065		} else if (configureGrub) {
5066		cfi = &grubConfigType;
5067		} else if (configureELilo) {
5068		cfi = &eliloConfigType;
5069		} else if (configureYaboot) {
5070		cfi = &yabootConfigType;
5071		} else if (configureSilo) {
5072		cfi = &siloConfigType;
5073		} else if (configureZipl) {
5074		cfi = &ziplConfigType;
5075		} else if (configureExtLinux) {
5076		cfi = &extlinuxConfigType;
5077		useextlinuxmenu = 1;
5078		}
5079
5080		if (!cfi) {
5081		if (grub2FindConfig(&grub2ConfigType)) {
5082		cfi = &grub2ConfigType;
5083		if (envPath)
5084		cfi->envFile = envPath;
5085		} else
5086		#ifdef __ia64__
5087		cfi = &eliloConfigType;
5088		#elif __powerpc__
5089		cfi = &yabootConfigType;
5090		#elif __sparc__
5091		cfi = &siloConfigType;
5092		#elif __s390__
5093		cfi = &ziplConfigType;
5094		#elif __s390x__
5095		cfi = &ziplConfigtype;
5096		#else
5097		cfi = &grubConfigType;
5098		#endif
5099		}
5100
5101		if (!grubConfig) {
5102		if (cfi->findConfig)
5103		grubConfig = cfi->findConfig(cfi);
5104		if (!grubConfig)
5105		grubConfig = cfi->defaultConfig;
5106		}
5107
5108		if (bootloaderProbe && (displayDefault || kernelInfo ||
5109		newKernelPath || removeKernelPath || makeDefault
5110		|| defaultKernel || displayDefaultIndex
5111		|| displayDefaultTitle
5112		|| (defaultIndex >= 0))) {
5113		fprintf(stderr,
5114		_("grubby: --bootloader-probe may not be used with "
5115		"specified option"));
5116		return 1;
5117		}
5118
5119		if ((displayDefault || kernelInfo) && (newKernelPath ||
5120		removeKernelPath)) {
5121		fprintf(stderr, _("grubby: --default-kernel and --info may not "
5122		"be used when adding or removing kernels\n"));
5123		return 1;
5124		}
5125
5126		if (newKernelPath && !newKernelTitle) {
5127		fprintf(stderr, _("grubby: kernel title must be specified\n"));
5128		return 1;
5129		} else if (!newKernelPath && (copyDefault ||
5130		(newKernelInitrd && !updateKernelPath) ||
5131		makeDefault || extraInitrdCount > 0)) {
5132		fprintf(stderr, _("grubby: kernel path expected\n"));
5133		return 1;
5134		}
5135
5136		if (newKernelPath && updateKernelPath) {
5137		fprintf(stderr, _("grubby: --add-kernel and --update-kernel may"
5138		"not be used together"));
5139		return 1;
5140		}
5141
5142		if (makeDefault && defaultKernel) {
5143		fprintf(stderr, _("grubby: --make-default and --default-kernel "
5144		"may not be used together\n"));
5145		return 1;
5146		} else if (defaultKernel && removeKernelPath &&
5147		!strcmp(defaultKernel, removeKernelPath)) {
5148		fprintf(stderr,
5149		_("grubby: cannot make removed kernel the default\n"));
5150		return 1;
5151		} else if (defaultKernel && newKernelPath &&
5152		!strcmp(defaultKernel, newKernelPath)) {
5153		makeDefault = 1;
5154		defaultKernel = NULL;
5155		} else if (defaultKernel && (defaultIndex >= 0)) {
5156		fprintf(stderr,
5157		_("grubby: --set-default and --set-default-index "
5158		"may not be used together\n"));
5159		return 1;
5160		}
5161
5162		if (grubConfig && !strcmp(grubConfig, "-") && !outputFile) {
5163		fprintf(stderr,
5164		_("grubby: output file must be specified if stdin "
5165		"is used\n"));
5166		return 1;
5167		}
5168
5169		if (!removeKernelPath && !newKernelPath && !displayDefault
5170		&& !defaultKernel && !kernelInfo && !bootloaderProbe
5171		&& !updateKernelPath && !removeMBKernel && !displayDefaultIndex
5172		&& !displayDefaultTitle && (defaultIndex == -1)) {
5173		fprintf(stderr, _("grubby: no action specified\n"));
5174		return 1;
5175		}
5176
5177		flags |= badImageOkay ? GRUBBY_BADIMAGE_OKAY : 0;
5178
5179		if (cfi->needsBootPrefix) {
5180		if (!bootPrefix) {
5181		bootPrefix = findBootPrefix();
5182		if (!bootPrefix)
5183		return 1;
5184		} else {
5185		/* this shouldn't end with a / */
5186		if (bootPrefix[strlen(bootPrefix) - 1] == '/')
5187		bootPrefix[strlen(bootPrefix) - 1] = '\0';
5188		}
5189		} else {
5190		bootPrefix = "";
5191		}
5192
5193		if (!cfi->mbAllowExtraInitRds && extraInitrdCount > 0) {
5194		fprintf(stderr,
5195		_("grubby: %s doesn't allow multiple initrds\n"),
5196		cfi->defaultConfig);
5197		return 1;
5198		}
5199
5200		if (bootloaderProbe) {
5201		int lrc = 0, grc = 0, gr2c = 0, extrc = 0, yrc = 0, erc = 0;
5202		struct grubConfig *lconfig, *gconfig, *yconfig, *econfig;
5203
5204		const char *grub2config = grub2FindConfig(&grub2ConfigType);
5205		if (grub2config) {
5206		gconfig = readConfig(grub2config, &grub2ConfigType);
5207		if (!gconfig)
5208		gr2c = 1;
5209		else
5210		gr2c = checkForGrub2(gconfig);
5211		}
5212
5213		const char *grubconfig = grubFindConfig(&grubConfigType);
5214		if (!access(grubconfig, F_OK)) {
5215		gconfig = readConfig(grubconfig, &grubConfigType);
5216		if (!gconfig)
5217		grc = 1;
5218		else
5219		grc = checkForGrub(gconfig);
5220		}
5221
5222		if (!access(liloConfigType.defaultConfig, F_OK)) {
5223		lconfig =
5224		readConfig(liloConfigType.defaultConfig,
5225		&liloConfigType);
5226		if (!lconfig)
5227		lrc = 1;
5228		else
5229		lrc = checkForLilo(lconfig);
5230		}
5231
5232		if (!access(eliloConfigType.defaultConfig, F_OK)) {
5233		econfig = readConfig(eliloConfigType.defaultConfig,
5234		&eliloConfigType);
5235		if (!econfig)
5236		erc = 1;
5237		else
5238		erc = checkForElilo(econfig);
5239		}
5240
5241		if (!access(extlinuxConfigType.defaultConfig, F_OK)) {
5242		lconfig =
5243		readConfig(extlinuxConfigType.defaultConfig,
5244		&extlinuxConfigType);
5245		if (!lconfig)
5246		extrc = 1;
5247		else
5248		extrc = checkForExtLinux(lconfig);
5249		}
5250
5251		if (!access(yabootConfigType.defaultConfig, F_OK)) {
5252		yconfig = readConfig(yabootConfigType.defaultConfig,
5253		&yabootConfigType);
5254		if (!yconfig)
5255		yrc = 1;
5256		else
5257		yrc = checkForYaboot(yconfig);
5258		}
5259
5260		if (lrc == 1 || grc == 1 || gr2c == 1 || extrc == 1 || yrc == 1
5261		|| erc == 1)
5262		return 1;
5263
5264		if (lrc == 2)
5265		printf("lilo\n");
5266		if (gr2c == 2)
5267		printf("grub2\n");
5268		if (grc == 2)
5269		printf("grub\n");
5270		if (extrc == 2)
5271		printf("extlinux\n");
5272		if (yrc == 2)
5273		printf("yaboot\n");
5274		if (erc == 2)
5275		printf("elilo\n");
5276
5277		return 0;
5278		}
5279
5280		if (grubConfig == NULL) {
5281		printf("Could not find bootloader configuration file.\n");
5282		exit(1);
5283		}
5284
5285		config = readConfig(grubConfig, cfi);
5286		if (!config)
5287		return 1;
5288
5289		if (displayDefault) {
5290		struct singleLine *line;
5291		struct singleEntry *entry;
5292		char *rootspec;
5293
5294		if (config->defaultImage == NO_DEFAULT_ENTRY)
5295		return 0;
5296		if (config->defaultImage == DEFAULT_SAVED_GRUB2 &&
5297		cfi->defaultIsSaved)
5298		config->defaultImage = FIRST_ENTRY_INDEX;
5299		entry = findEntryByIndex(config, config->defaultImage);
5300		if (!entry)
5301		return 0;
5302		if (!suitableImage(entry, bootPrefix, 0, flags))
5303		return 0;
5304
5305		line =
5306		getLineByType(LT_KERNEL | LT_HYPER | LT_KERNEL_EFI |
5307		LT_KERNEL_16, entry->lines);
5308		if (!line)
5309		return 0;
5310
5311		rootspec = getRootSpecifier(line->elements[1].item);
5312		printf("%s%s\n", bootPrefix, line->elements[1].item +
5313		((rootspec != NULL) ? strlen(rootspec) : 0));
5314
5315		return 0;
5316
5317		} else if (displayDefaultTitle) {
5318		struct singleLine *line;
5319		struct singleEntry *entry;
5320
5321		if (config->defaultImage == NO_DEFAULT_ENTRY)
5322		return 0;
5323		if (config->defaultImage == DEFAULT_SAVED_GRUB2 &&
5324		cfi->defaultIsSaved)
5325		config->defaultImage = FIRST_ENTRY_INDEX;
5326		entry = findEntryByIndex(config, config->defaultImage);
5327		if (!entry)
5328		return 0;
5329
5330		if (!configureGrub2) {
5331		char *title;
5332		line = getLineByType(LT_TITLE, entry->lines);
5333		if (!line)
5334		return 0;
5335		title = extractTitle(config, line);
5336		if (!title)
5337		return 0;
5338		printf("%s\n", title);
5339		free(title);
5340		} else {
5341		char *title;
5342
5343		dbgPrintf
5344		("This is GRUB2, default title is embeded in menuentry\n");
5345		line = getLineByType(LT_MENUENTRY, entry->lines);
5346		if (!line)
5347		return 0;
5348		title = grub2ExtractTitle(line);
5349		if (title)
5350		printf("%s\n", title);
5351		}
5352		return 0;
5353
5354		} else if (displayDefaultIndex) {
5355		if (config->defaultImage == NO_DEFAULT_ENTRY)
5356		return 0;
5357		if (config->defaultImage == DEFAULT_SAVED_GRUB2 &&
5358		cfi->defaultIsSaved)
5359		config->defaultImage = FIRST_ENTRY_INDEX;
5360		printf("%i\n", config->defaultImage);
5361		return 0;
5362
5363		} else if (kernelInfo)
5364		return displayInfo(config, kernelInfo, bootPrefix);
5365
5366		if (copyDefault) {
5367		template = findTemplate(config, bootPrefix, NULL, 0, flags);
5368		if (!template)
5369		return 1;
5370		}
5371
5372		markRemovedImage(config, removeKernelPath, bootPrefix);
5373		markRemovedImage(config, removeMBKernel, bootPrefix);
5374		setDefaultImage(config, newKernelPath != NULL, defaultKernel,
5375		makeDefault, bootPrefix, flags, defaultIndex,
5376		newIndex);
5377		setFallbackImage(config, newKernelPath != NULL);
5378		if (updateImage(config, updateKernelPath, bootPrefix, newKernelArgs,
5379		removeArgs, newMBKernelArgs, removeMBKernelArgs))
5380		return 1;
5381		if (updateKernelPath && newKernelInitrd) {
5382		if (newMBKernel) {
5383		if (addMBInitrd(config, newMBKernel, updateKernelPath,
5384		bootPrefix, newKernelInitrd,
5385		newKernelTitle))
5386		return 1;
5387		} else {
5388		if (updateInitrd(config, updateKernelPath, bootPrefix,
5389		newKernelInitrd, newKernelTitle))
5390		return 1;
5391		}
5392		}
5393		if (addNewKernel(config, template, bootPrefix, newKernelPath,
5394		newKernelTitle, newKernelArgs, newKernelInitrd,
5395		(const char **)extraInitrds, extraInitrdCount,
5396		newMBKernel, newMBKernelArgs, newDevTreePath,
5397		newIndex))
5398		return 1;
5399
5400		if (numEntries(config) == 0) {
5401		fprintf(stderr,
5402		_("grubby: doing this would leave no kernel entries. "
5403		"Not writing out new config.\n"));
5404		return 1;
5405		}
5406
5407	if (!outputFile)	if (!outputFile)
5408	outputFile = grubConfig;	outputFile = (char *)grubConfig;
5409
5410	return writeConfig(config, outputFile, bootPrefix);	return writeConfig(config, outputFile, bootPrefix);
5411	}	}

---

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Legend: Removed from v.926   changed lines   Added in v.3031