Diff of /trunk/grubby/grubby.c

Parent Directory | Revision Log | Patch

	revision 1694 by niro, Fri Feb 17 23:23:07 2012 UTC	revision 3139 by niro, Tue Jul 7 11:12:00 2020 UTC
#	Line 36	Line 36
36	#include <signal.h>	#include <signal.h>
37	#include <blkid/blkid.h>	#include <blkid/blkid.h>
38
39		#include "log.h"
40
41	#ifndef DEBUG	#ifndef DEBUG
42	#define DEBUG 0	#define DEBUG 0
43	#endif	#endif
#	Line 46	Line 48
48	#define dbgPrintf(format, args...)	#define dbgPrintf(format, args...)
49	#endif	#endif
50
51		int debug = 0; /* Currently just for template debugging */
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		const char *mounts = "/proc/mounts";
72
73	/* comments get lumped in with indention */	/* comments get lumped in with indention */
74	struct lineElement {	struct lineElement {
75	char * item;	char *item;
76	char * indent;	char *indent;
77	};	};
78
79	enum lineType_e {	enum lineType_e {
80	LT_WHITESPACE = 1 << 0,	LT_UNIDENTIFIED = 0,
81	LT_TITLE      = 1 << 1,	LT_WHITESPACE = 1 << 0,
82	LT_KERNEL     = 1 << 2,	LT_TITLE = 1 << 1,
83	LT_INITRD     = 1 << 3,	LT_KERNEL = 1 << 2,
84	LT_HYPER      = 1 << 4,	LT_INITRD = 1 << 3,
85	LT_DEFAULT    = 1 << 5,	LT_HYPER = 1 << 4,
86	LT_MBMODULE   = 1 << 6,	LT_DEFAULT = 1 << 5,
87	LT_ROOT       = 1 << 7,	LT_MBMODULE = 1 << 6,
88	LT_FALLBACK   = 1 << 8,	LT_ROOT = 1 << 7,
89	LT_KERNELARGS = 1 << 9,	LT_FALLBACK = 1 << 8,
90	LT_BOOT       = 1 << 10,	LT_KERNELARGS = 1 << 9,
91	LT_BOOTROOT   = 1 << 11,	LT_BOOT = 1 << 10,
92	LT_LBA        = 1 << 12,	LT_BOOTROOT = 1 << 11,
93	LT_OTHER      = 1 << 13,	LT_LBA = 1 << 12,
94	LT_GENERIC    = 1 << 14,	LT_OTHER = 1 << 13,
95	LT_UNKNOWN    = 1 << 15,	LT_GENERIC = 1 << 14,
96		LT_ECHO = 1 << 16,
97		LT_MENUENTRY = 1 << 17,
98		LT_ENTRY_END = 1 << 18,
99		LT_SET_VARIABLE = 1 << 19,
100		LT_KERNEL_EFI = 1 << 20,
101		LT_INITRD_EFI = 1 << 21,
102		LT_KERNEL_16 = 1 << 22,
103		LT_INITRD_16 = 1 << 23,
104		LT_DEVTREE = 1 << 24,
105		LT_UNKNOWN = 1 << 25,
106	};	};
107
108	struct singleLine {	struct singleLine {
109	char * indent;	char *indent;
110	int numElements;	int numElements;
111	struct lineElement * elements;	struct lineElement *elements;
112	struct singleLine * next;	struct singleLine *next;
113	enum lineType_e type;	enum lineType_e type;
114	};	};
115
116	struct singleEntry {	struct singleEntry {
117	struct singleLine * lines;	struct singleLine *lines;
118	int skip;	int skip;
119	int multiboot;	int multiboot;
120	struct singleEntry * next;	struct singleEntry *next;
121	};	};
122
123	#define GRUBBY_BADIMAGE_OKAY (1 << 0)	#define GRUBBY_BADIMAGE_OKAY (1 << 0)
#	Line 101  struct singleEntry {	Line 130  struct singleEntry {
130	#define NEED_TITLE   (1 << 2)	#define NEED_TITLE   (1 << 2)
131	#define NEED_ARGS    (1 << 3)	#define NEED_ARGS    (1 << 3)
132	#define NEED_MB      (1 << 4)	#define NEED_MB      (1 << 4)
133		#define NEED_END     (1 << 5)
134		#define NEED_DEVTREE (1 << 6)
135
136	#define MAIN_DEFAULT    (1 << 0)	#define MAIN_DEFAULT    (1 << 0)
137		#define FIRST_ENTRY_INDEX    0 /* boot entry index value begin and increment
138		from this initial value */
139		#define NO_DEFAULT_ENTRY    -1 /* indicates that no specific default boot
140		entry was set or currently exists */
141	#define DEFAULT_SAVED       -2	#define DEFAULT_SAVED       -2
142		#define DEFAULT_SAVED_GRUB2 -3
143
144	struct keywordTypes {	struct keywordTypes {
145	char * key;	char *key;
146	enum lineType_e type;	enum lineType_e type;
147	char nextChar;	char nextChar;
148	char separatorChar;	char separatorChar;
149	};	};
150
151		struct configFileInfo;
152
153		typedef const char *(*findConfigFunc) (struct configFileInfo *);
154		typedef const int (*writeLineFunc) (struct configFileInfo *,
155		struct singleLine * line);
156		typedef char *(*getEnvFunc) (struct configFileInfo *, char *name);
157		typedef int (*setEnvFunc) (struct configFileInfo *, char *name, char *value);
158
159	struct configFileInfo {	struct configFileInfo {
160	char * defaultConfig;	char *defaultConfig;
161	struct keywordTypes * keywords;	findConfigFunc findConfig;
162	int defaultIsIndex;	writeLineFunc writeLine;
163	int defaultSupportSaved;	getEnvFunc getEnv;
164	enum lineType_e entryStart;	setEnvFunc setEnv;
165	int needsBootPrefix;	struct keywordTypes *keywords;
166	int argsInQuotes;	int caseInsensitive;
167	int maxTitleLength;	int defaultIsIndex;
168	int titleBracketed;	int defaultIsVariable;
169	int mbHyperFirst;	int defaultSupportSaved;
170	int mbInitRdIsModule;	int defaultIsSaved;
171	int mbConcatArgs;	int defaultIsUnquoted;
172	int mbAllowExtraInitRds;	enum lineType_e entryStart;
173		enum lineType_e entryEnd;
174		int needsBootPrefix;
175		int argsInQuotes;
176		int maxTitleLength;
177		int titleBracketed;
178		int titlePosition;
179		int mbHyperFirst;
180		int mbInitRdIsModule;
181		int mbConcatArgs;
182		int mbAllowExtraInitRds;
183		char *envFile;
184	};	};
185
186	struct keywordTypes grubKeywords[] = {	struct keywordTypes grubKeywords[] = {
187	{ "title",    LT_TITLE,    ' ' },	{"title", LT_TITLE, ' '},
188	{ "root",    LT_BOOTROOT,    ' ' },	{"root", LT_BOOTROOT, ' '},
189	{ "default",    LT_DEFAULT,    ' ' },	{"default", LT_DEFAULT, ' '},
190	{ "fallback",   LT_FALLBACK,    ' ' },	{"fallback", LT_FALLBACK, ' '},
191	{ "kernel",    LT_KERNEL,    ' ' },	{"kernel", LT_KERNEL, ' '},
192	{ "initrd",    LT_INITRD,    ' ', ' ' },	{"initrd", LT_INITRD, ' ', ' '},
193	{ "module",     LT_MBMODULE,    ' ' },	{"module", LT_MBMODULE, ' '},
194	{ "kernel",     LT_HYPER,       ' ' },	{"kernel", LT_HYPER, ' '},
195	{ NULL,    0, 0 },	{NULL, 0, 0},
196	};	};
197
198		const char *grubFindConfig(struct configFileInfo *cfi)
199		{
200		static const char *configFiles[] = {
201		"/boot/grub/grub.conf",
202		"/boot/grub/menu.lst",
203		"/etc/grub.conf",
204		NULL
205		};
206		static int i = -1;
207
208		if (i == -1) {
209		for (i = 0; configFiles[i] != NULL; i++) {
210		dbgPrintf("Checking \"%s\": ", configFiles[i]);
211		if (!access(configFiles[i], R_OK)) {
212		dbgPrintf("found\n");
213		return configFiles[i];
214		}
215		dbgPrintf("not found\n");
216		}
217		}
218		return configFiles[i];
219		}
220
221	struct configFileInfo grubConfigType = {	struct configFileInfo grubConfigType = {
222	.defaultConfig = "/boot/grub/grub.conf",	.findConfig = grubFindConfig,
223	.keywords = grubKeywords,	.keywords = grubKeywords,
224	.defaultIsIndex = 1,	.defaultIsIndex = 1,
225	.defaultSupportSaved = 1,	.defaultSupportSaved = 1,
226	.entryStart = LT_TITLE,	.entryStart = LT_TITLE,
227	.needsBootPrefix = 1,	.needsBootPrefix = 1,
228	.mbHyperFirst = 1,	.mbHyperFirst = 1,
229	.mbInitRdIsModule = 1,	.mbInitRdIsModule = 1,
230	.mbAllowExtraInitRds = 1,	.mbAllowExtraInitRds = 1,
231		.titlePosition = 1,
232		};
233
234		struct keywordTypes grub2Keywords[] = {
235		{"menuentry", LT_MENUENTRY, ' '},
236		{"}", LT_ENTRY_END, ' '},
237		{"echo", LT_ECHO, ' '},
238		{"set", LT_SET_VARIABLE, ' ', '='},
239		{"root", LT_BOOTROOT, ' '},
240		{"default", LT_DEFAULT, ' '},
241		{"fallback", LT_FALLBACK, ' '},
242		{"linux", LT_KERNEL, ' '},
243		{"linuxefi", LT_KERNEL_EFI, ' '},
244		{"linux16", LT_KERNEL_16, ' '},
245		{"initrd", LT_INITRD, ' ', ' '},
246		{"initrdefi", LT_INITRD_EFI, ' ', ' '},
247		{"initrd16", LT_INITRD_16, ' ', ' '},
248		{"module", LT_MBMODULE, ' '},
249		{"kernel", LT_HYPER, ' '},
250		{"devicetree", LT_DEVTREE, ' '},
251		{NULL, 0, 0},
252		};
253
254		const char *grub2FindConfig(struct configFileInfo *cfi)
255		{
256		static const char *configFiles[] = {
257		"/boot/grub/grub-efi.cfg",
258		"/boot/grub/grub.cfg",
259		"/etc/grub2-efi.cfg",
260		"/etc/grub2.cfg",
261		"/boot/grub2/grub.cfg",
262		"/boot/grub2-efi/grub.cfg",
263		NULL
264		};
265		static int i = -1;
266		static const char *grub_cfg = "/boot/grub/grub.cfg";
267		int rc = -1;
268
269		if (i == -1) {
270		for (i = 0; configFiles[i] != NULL; i++) {
271		dbgPrintf("Checking \"%s\": ", configFiles[i]);
272		if ((rc = access(configFiles[i], R_OK))) {
273		if (errno == EACCES) {
274		printf
275		("Unable to access bootloader configuration file "
276		"\"%s\": %m\n", configFiles[i]);
277		exit(1);
278		}
279		continue;
280		} else {
281		dbgPrintf("found\n");
282		return configFiles[i];
283		}
284		}
285		}
286
287		/* Ubuntu renames grub2 to grub, so check for the grub.d directory
288		* that isn't in grub1, and if it exists, return the config file path
289		* that they use. */
290		if (configFiles[i] == NULL && !access("/etc/grub.d/", R_OK)) {
291		dbgPrintf("found\n");
292		return grub_cfg;
293		}
294
295		dbgPrintf("not found\n");
296		return configFiles[i];
297		}
298
299		/* kind of hacky.  It'll give the first 1024 bytes, ish. */
300		static char *grub2GetEnv(struct configFileInfo *info, char *name)
301		{
302		static char buf[1025];
303		char *s = NULL;
304		char *ret = NULL;
305		char *envFile = info->envFile ? info->envFile : "/boot/grub/grubenv";
306		int rc =
307		asprintf(&s, "grub-editenv %s list | grep '^%s='", envFile, name);
308
309		if (rc < 0)
310		return NULL;
311
312		FILE *f = popen(s, "r");
313		if (!f)
314		goto out;
315
316		memset(buf, '\0', sizeof(buf));
317		ret = fgets(buf, 1024, f);
318		pclose(f);
319
320		if (ret) {
321		ret += strlen(name) + 1;
322		ret[strlen(ret) - 1] = '\0';
323		}
324		dbgPrintf("grub2GetEnv(%s): %s\n", name, ret);
325		out:
326		free(s);
327		return ret;
328		}
329
330		static int sPopCount(const char *s, const char *c)
331		{
332		int ret = 0;
333		if (!s)
334		return -1;
335		for (int i = 0; s[i] != '\0'; i++)
336		for (int j = 0; c[j] != '\0'; j++)
337		if (s[i] == c[j])
338		ret++;
339		return ret;
340		}
341
342		static char *shellEscape(const char *s)
343		{
344		int l = strlen(s) + sPopCount(s, "'") * 2;
345
346		char *ret = calloc(l + 1, sizeof(*ret));
347		if (!ret)
348		return NULL;
349		for (int i = 0, j = 0; s[i] != '\0'; i++, j++) {
350		if (s[i] == '\'')
351		ret[j++] = '\\';
352		ret[j] = s[i];
353		}
354		return ret;
355		}
356
357		static void unquote(char *s)
358		{
359		int l = strlen(s);
360
361		if ((s[l - 1] == '\'' && s[0] == '\'')
362		|| (s[l - 1] == '"' && s[0] == '"')) {
363		memmove(s, s + 1, l - 2);
364		s[l - 2] = '\0';
365		}
366		}
367
368		static int grub2SetEnv(struct configFileInfo *info, char *name, char *value)
369		{
370		char *s = NULL;
371		int rc = 0;
372		char *envFile = info->envFile ? info->envFile : "/boot/grub/grubenv";
373
374		unquote(value);
375		value = shellEscape(value);
376		if (!value)
377		return -1;
378
379		rc = asprintf(&s, "grub-editenv %s set '%s=%s'", envFile, name, value);
380		free(value);
381		if (rc < 0)
382		return -1;
383
384		dbgPrintf("grub2SetEnv(%s): %s\n", name, s);
385		rc = system(s);
386		free(s);
387		return rc;
388		}
389
390		/* this is a gigantic hack to avoid clobbering grub2 variables... */
391		static int is_special_grub2_variable(const char *name)
392		{
393		if (!strcmp(name, "\"${next_entry}\""))
394		return 1;
395		if (!strcmp(name, "\"${prev_saved_entry}\""))
396		return 1;
397		return 0;
398		}
399
400		int sizeOfSingleLine(struct singleLine *line)
401		{
402		int count = 0;
403
404		for (int i = 0; i < line->numElements; i++) {
405		int indentSize = 0;
406
407		count = count + strlen(line->elements[i].item);
408
409		indentSize = strlen(line->elements[i].indent);
410		if (indentSize > 0)
411		count = count + indentSize;
412		else
413		/* be extra safe and add room for whitespaces */
414		count = count + 1;
415		}
416
417		/* room for trailing terminator */
418		count = count + 1;
419
420		return count;
421		}
422
423		static int isquote(char q)
424		{
425		if (q == '\'' || q == '\"')
426		return 1;
427		return 0;
428		}
429
430		static int iskernel(enum lineType_e type)
431		{
432		return (type == LT_KERNEL || type == LT_KERNEL_EFI
433		|| type == LT_KERNEL_16);
434		}
435
436		static int isinitrd(enum lineType_e type)
437		{
438		return (type == LT_INITRD || type == LT_INITRD_EFI
439		|| type == LT_INITRD_16);
440		}
441
442		char *grub2ExtractTitle(struct singleLine *line)
443		{
444		char *current;
445		char *current_indent;
446		int current_len;
447		int current_indent_len;
448		int i;
449
450		/* bail out if line does not start with menuentry */
451		if (strcmp(line->elements[0].item, "menuentry"))
452		return NULL;
453
454		i = 1;
455		current = line->elements[i].item;
456		current_len = strlen(current);
457
458		/* if second word is quoted, strip the quotes and return single word */
459		if (isquote(*current) && isquote(current[current_len - 1])) {
460		char *tmp;
461
462		tmp = strdup(current + 1);
463		if (!tmp)
464		return NULL;
465		tmp[strlen(tmp) - 1] = '\0';
466		return tmp;
467		}
468
469		/* if no quotes, return second word verbatim */
470		if (!isquote(*current))
471		return current;
472
473		/* second element start with a quote, so we have to find the element
474		* whose last character is also quote (assuming it's the closing one) */
475		int resultMaxSize;
476		char *result;
477		/* need to ensure that ' does not match " as we search */
478		char quote_char = *current;
479
480		resultMaxSize = sizeOfSingleLine(line);
481		result = malloc(resultMaxSize);
482		snprintf(result, resultMaxSize, "%s", ++current);
483
484		i++;
485		for (; i < line->numElements; ++i) {
486		current = line->elements[i].item;
487		current_len = strlen(current);
488		current_indent = line->elements[i].indent;
489		current_indent_len = strlen(current_indent);
490
491		strncat(result, current_indent, current_indent_len);
492		if (current[current_len - 1] != quote_char) {
493		strncat(result, current, current_len);
494		} else {
495		strncat(result, current, current_len - 1);
496		break;
497		}
498		}
499		return result;
500		}
501
502		struct configFileInfo grub2ConfigType = {
503		.findConfig = grub2FindConfig,
504		.getEnv = grub2GetEnv,
505		.setEnv = grub2SetEnv,
506		.keywords = grub2Keywords,
507		.defaultIsIndex = 1,
508		.defaultSupportSaved = 1,
509		.defaultIsVariable = 1,
510		.entryStart = LT_MENUENTRY,
511		.entryEnd = LT_ENTRY_END,
512		.titlePosition = 1,
513		.needsBootPrefix = 1,
514		.mbHyperFirst = 1,
515		.mbInitRdIsModule = 1,
516		.mbAllowExtraInitRds = 1,
517	};	};
518
519	struct keywordTypes yabootKeywords[] = {	struct keywordTypes yabootKeywords[] = {
520	{ "label",    LT_TITLE,    '=' },	{"label", LT_TITLE, '='},
521	{ "root",    LT_ROOT,    '=' },	{"root", LT_ROOT, '='},
522	{ "default",    LT_DEFAULT,    '=' },	{"default", LT_DEFAULT, '='},
523	{ "image",    LT_KERNEL,    '=' },	{"image", LT_KERNEL, '='},
524	{ "bsd",    LT_GENERIC,    '=' },	{"bsd", LT_GENERIC, '='},
525	{ "macos",    LT_GENERIC,    '=' },	{"macos", LT_GENERIC, '='},
526	{ "macosx",    LT_GENERIC,    '=' },	{"macosx", LT_GENERIC, '='},
527	{ "magicboot",  LT_GENERIC,    '=' },	{"magicboot", LT_GENERIC, '='},
528	{ "darwin",    LT_GENERIC,    '=' },	{"darwin", LT_GENERIC, '='},
529	{ "timeout",    LT_GENERIC,    '=' },	{"timeout", LT_GENERIC, '='},
530	{ "install",    LT_GENERIC,    '=' },	{"install", LT_GENERIC, '='},
531	{ "fstype",    LT_GENERIC,    '=' },	{"fstype", LT_GENERIC, '='},
532	{ "hfstype",    LT_GENERIC,    '=' },	{"hfstype", LT_GENERIC, '='},
533	{ "delay",    LT_GENERIC,    '=' },	{"delay", LT_GENERIC, '='},
534	{ "defaultos",  LT_GENERIC,     '=' },	{"defaultos", LT_GENERIC, '='},
535	{ "init-message", LT_GENERIC,   '=' },	{"init-message", LT_GENERIC, '='},
536	{ "enablecdboot", LT_GENERIC,   ' ' },	{"enablecdboot", LT_GENERIC, ' '},
537	{ "enableofboot", LT_GENERIC,   ' ' },	{"enableofboot", LT_GENERIC, ' '},
538	{ "enablenetboot", LT_GENERIC,  ' ' },	{"enablenetboot", LT_GENERIC, ' '},
539	{ "nonvram",    LT_GENERIC,    ' ' },	{"nonvram", LT_GENERIC, ' '},
540	{ "hide",    LT_GENERIC,    ' ' },	{"hide", LT_GENERIC, ' '},
541	{ "protect",    LT_GENERIC,    ' ' },	{"protect", LT_GENERIC, ' '},
542	{ "nobless",    LT_GENERIC,    ' ' },	{"nobless", LT_GENERIC, ' '},
543	{ "nonvram",    LT_GENERIC,    ' ' },	{"nonvram", LT_GENERIC, ' '},
544	{ "brokenosx",  LT_GENERIC,    ' ' },	{"brokenosx", LT_GENERIC, ' '},
545	{ "usemount",   LT_GENERIC,    ' ' },	{"usemount", LT_GENERIC, ' '},
546	{ "mntpoint",   LT_GENERIC,    '=' },	{"mntpoint", LT_GENERIC, '='},
547	{ "partition",  LT_GENERIC,    '=' },	{"partition", LT_GENERIC, '='},
548	{ "device",    LT_GENERIC,    '=' },	{"device", LT_GENERIC, '='},
549	{ "fstype",    LT_GENERIC,    '=' },	{"fstype", LT_GENERIC, '='},
550	{ "initrd",    LT_INITRD,    '=', ';' },	{"initrd", LT_INITRD, '=', ';'},
551	{ "append",    LT_KERNELARGS,  '=' },	{"append", LT_KERNELARGS, '='},
552	{ "boot",    LT_BOOT,    '=' },	{"boot", LT_BOOT, '='},
553	{ "lba",    LT_LBA,    ' ' },	{"lba", LT_LBA, ' '},
554	{ NULL,    0, 0 },	{NULL, 0, 0},
555	};	};
556
557	struct keywordTypes liloKeywords[] = {	struct keywordTypes liloKeywords[] = {
558	{ "label",    LT_TITLE,    '=' },	{"label", LT_TITLE, '='},
559	{ "root",    LT_ROOT,    '=' },	{"root", LT_ROOT, '='},
560	{ "default",    LT_DEFAULT,    '=' },	{"default", LT_DEFAULT, '='},
561	{ "image",    LT_KERNEL,    '=' },	{"image", LT_KERNEL, '='},
562	{ "other",    LT_OTHER,    '=' },	{"other", LT_OTHER, '='},
563	{ "initrd",    LT_INITRD,    '=' },	{"initrd", LT_INITRD, '='},
564	{ "append",    LT_KERNELARGS,  '=' },	{"append", LT_KERNELARGS, '='},
565	{ "boot",    LT_BOOT,    '=' },	{"boot", LT_BOOT, '='},
566	{ "lba",    LT_LBA,    ' ' },	{"lba", LT_LBA, ' '},
567	{ NULL,    0, 0 },	{NULL, 0, 0},
568	};	};
569
570	struct keywordTypes eliloKeywords[] = {	struct keywordTypes eliloKeywords[] = {
571	{ "label",    LT_TITLE,    '=' },	{"label", LT_TITLE, '='},
572	{ "root",    LT_ROOT,    '=' },	{"root", LT_ROOT, '='},
573	{ "default",    LT_DEFAULT,    '=' },	{"default", LT_DEFAULT, '='},
574	{ "image",    LT_KERNEL,    '=' },	{"image", LT_KERNEL, '='},
575	{ "initrd",    LT_INITRD,    '=' },	{"initrd", LT_INITRD, '='},
576	{ "append",    LT_KERNELARGS,  '=' },	{"append", LT_KERNELARGS, '='},
577	{ "vmm",    LT_HYPER,       '=' },	{"vmm", LT_HYPER, '='},
578	{ NULL,    0, 0 },	{NULL, 0, 0},
579	};	};
580
581	struct keywordTypes siloKeywords[] = {	struct keywordTypes siloKeywords[] = {
582	{ "label",    LT_TITLE,    '=' },	{"label", LT_TITLE, '='},
583	{ "root",    LT_ROOT,    '=' },	{"root", LT_ROOT, '='},
584	{ "default",    LT_DEFAULT,    '=' },	{"default", LT_DEFAULT, '='},
585	{ "image",    LT_KERNEL,    '=' },	{"image", LT_KERNEL, '='},
586	{ "other",    LT_OTHER,    '=' },	{"other", LT_OTHER, '='},
587	{ "initrd",    LT_INITRD,    '=' },	{"initrd", LT_INITRD, '='},
588	{ "append",    LT_KERNELARGS,  '=' },	{"append", LT_KERNELARGS, '='},
589	{ "boot",    LT_BOOT,    '=' },	{"boot", LT_BOOT, '='},
590	{ NULL,    0, 0 },	{NULL, 0, 0},
591	};	};
592
593	struct keywordTypes ziplKeywords[] = {	struct keywordTypes ziplKeywords[] = {
594	{ "target",     LT_BOOTROOT,    '=' },	{"target", LT_BOOTROOT, '='},
595	{ "image",      LT_KERNEL,      '=' },	{"image", LT_KERNEL, '='},
596	{ "ramdisk",    LT_INITRD,      '=' },	{"ramdisk", LT_INITRD, '='},
597	{ "parameters", LT_KERNELARGS,  '=' },	{"parameters", LT_KERNELARGS, '='},
598	{ "default",    LT_DEFAULT,     '=' },	{"default", LT_DEFAULT, '='},
599	{ NULL,         0, 0 },	{NULL, 0, 0},
600	};	};
601
602	struct keywordTypes extlinuxKeywords[] = {	struct keywordTypes extlinuxKeywords[] = {
603	{ "label",    LT_TITLE,    ' ' },	{"label", LT_TITLE, ' '},
604	{ "root",    LT_ROOT,    ' ' },	{"root", LT_ROOT, ' '},
605	{ "default",    LT_DEFAULT,    ' ' },	{"default", LT_DEFAULT, ' '},
606	{ "kernel",    LT_KERNEL,    ' ' },	{"kernel", LT_KERNEL, ' '},
607	{ "initrd",    LT_INITRD,      ' ', ',' },	{"initrd", LT_INITRD, ' ', ','},
608	{ "append",    LT_KERNELARGS,  ' ' },	{"append", LT_KERNELARGS, ' '},
609	{ "prompt",     LT_UNKNOWN,     ' ' },	{"prompt", LT_UNKNOWN, ' '},
610	{ NULL,    0, 0 },	{"fdt", LT_DEVTREE, ' '},
611		{"fdtdir", LT_DEVTREE, ' '},
612		{NULL, 0, 0},
613	};	};
614
615	int useextlinuxmenu;	int useextlinuxmenu;
616	struct configFileInfo eliloConfigType = {	struct configFileInfo eliloConfigType = {
617	.defaultConfig = "/boot/efi/EFI/redhat/elilo.conf",	.defaultConfig = "/boot/efi/EFI/redhat/elilo.conf",
618	.keywords = eliloKeywords,	.keywords = eliloKeywords,
619	.entryStart = LT_KERNEL,	.entryStart = LT_KERNEL,
620	.needsBootPrefix = 1,	.needsBootPrefix = 1,
621	.argsInQuotes = 1,	.argsInQuotes = 1,
622	.mbConcatArgs = 1,	.mbConcatArgs = 1,
623		.titlePosition = 1,
624	};	};
625
626	struct configFileInfo liloConfigType = {	struct configFileInfo liloConfigType = {
627	.defaultConfig = "/etc/lilo.conf",	.defaultConfig = "/etc/lilo.conf",
628	.keywords = liloKeywords,	.keywords = liloKeywords,
629	.entryStart = LT_KERNEL,	.entryStart = LT_KERNEL,
630	.argsInQuotes = 1,	.argsInQuotes = 1,
631	.maxTitleLength = 15,	.maxTitleLength = 15,
632		.titlePosition = 1,
633	};	};
634
635	struct configFileInfo yabootConfigType = {	struct configFileInfo yabootConfigType = {
636	.defaultConfig = "/etc/yaboot.conf",	.defaultConfig = "/etc/yaboot.conf",
637	.keywords = yabootKeywords,	.keywords = yabootKeywords,
638	.entryStart = LT_KERNEL,	.entryStart = LT_KERNEL,
639	.needsBootPrefix = 1,	.needsBootPrefix = 1,
640	.argsInQuotes = 1,	.argsInQuotes = 1,
641	.maxTitleLength = 15,	.maxTitleLength = 15,
642	.mbAllowExtraInitRds = 1,	.mbAllowExtraInitRds = 1,
643		.titlePosition = 1,
644	};	};
645
646	struct configFileInfo siloConfigType = {	struct configFileInfo siloConfigType = {
647	.defaultConfig = "/etc/silo.conf",	.defaultConfig = "/etc/silo.conf",
648	.keywords = siloKeywords,	.keywords = siloKeywords,
649	.entryStart = LT_KERNEL,	.entryStart = LT_KERNEL,
650	.needsBootPrefix = 1,	.needsBootPrefix = 1,
651	.argsInQuotes = 1,	.argsInQuotes = 1,
652	.maxTitleLength = 15,	.maxTitleLength = 15,
653		.titlePosition = 1,
654	};	};
655
656	struct configFileInfo ziplConfigType = {	struct configFileInfo ziplConfigType = {
657	.defaultConfig = "/etc/zipl.conf",	.defaultConfig = "/etc/zipl.conf",
658	.keywords = ziplKeywords,	.keywords = ziplKeywords,
659	.entryStart = LT_TITLE,	.entryStart = LT_TITLE,
660	.argsInQuotes = 1,	.argsInQuotes = 1,
661	.titleBracketed = 1,	.titleBracketed = 1,
662	};	};
663
664	struct configFileInfo extlinuxConfigType = {	struct configFileInfo extlinuxConfigType = {
665	.defaultConfig = "/boot/extlinux/extlinux.conf",	.defaultConfig = "/boot/extlinux/extlinux.conf",
666	.keywords = extlinuxKeywords,	.keywords = extlinuxKeywords,
667	.entryStart = LT_TITLE,	.caseInsensitive = 1,
668	.needsBootPrefix = 1,	.entryStart = LT_TITLE,
669	.maxTitleLength = 255,	.needsBootPrefix = 1,
670	.mbAllowExtraInitRds = 1,	.maxTitleLength = 255,
671		.mbAllowExtraInitRds = 1,
672		.defaultIsUnquoted = 1,
673		.titlePosition = 1,
674	};	};
675
676	struct grubConfig {	struct grubConfig {
677	struct singleLine * theLines;	struct singleLine *theLines;
678	struct singleEntry * entries;	struct singleEntry *entries;
679	char * primaryIndent;	char *primaryIndent;
680	char * secondaryIndent;	char *secondaryIndent;
681	int defaultImage;    /* -1 if none specified -- this value is	int defaultImage; /* -1 if none specified -- this value is
682	* written out, overriding original */	* written out, overriding original */
683	int fallbackImage;    /* just like defaultImage */	int fallbackImage; /* just like defaultImage */
684	int flags;	int flags;
685	struct configFileInfo * cfi;	struct configFileInfo *cfi;
686		int isModified; /* assumes only one entry added
687		per invocation of grubby */
688	};	};
689
690	blkid_cache blkid;	blkid_cache blkid;
691
692	struct singleEntry * findEntryByIndex(struct grubConfig * cfg, int index);	struct singleEntry *findEntryByIndex(struct grubConfig *cfg, int index);
693	struct singleEntry * findEntryByPath(struct grubConfig * cfg,	struct singleEntry *findEntryByPath(struct grubConfig *cfg,
694	const char * path, const char * prefix,	const char *path, const char *prefix,
695	int * index);	int *index);
696	static int readFile(int fd, char ** bufPtr);	struct singleEntry *findEntryByTitle(struct grubConfig *cfg, char *title,
697	static void lineInit(struct singleLine * line);	int *index);
698	struct singleLine * lineDup(struct singleLine * line);	static int readFile(int fd, char **bufPtr);
699	static void lineFree(struct singleLine * line);	static void lineInit(struct singleLine *line);
700	static int lineWrite(FILE * out, struct singleLine * line,	struct singleLine *lineDup(struct singleLine *line);
701	struct configFileInfo * cfi);	static void lineFree(struct singleLine *line);
702	static int getNextLine(char ** bufPtr, struct singleLine * line,	static int lineWrite(FILE * out, struct singleLine *line,
703	struct configFileInfo * cfi);	struct configFileInfo *cfi);
704	static char * getRootSpecifier(char * str);	static int getNextLine(char **bufPtr, struct singleLine *line,
705	static void insertElement(struct singleLine * line,	struct configFileInfo *cfi);
706	const char * item, int insertHere,	static size_t getRootSpecifier(const char *str);
707	struct configFileInfo * cfi);	static void requote(struct singleLine *line, struct configFileInfo *cfi);
708	static void removeElement(struct singleLine * line, int removeHere);	static void insertElement(struct singleLine *line,
709	static struct keywordTypes * getKeywordByType(enum lineType_e type,	const char *item, int insertHere,
710	struct configFileInfo * cfi);	struct configFileInfo *cfi);
711	static enum lineType_e getTypeByKeyword(char * keyword,	static void removeElement(struct singleLine *line, int removeHere);
712	struct configFileInfo * cfi);	static struct keywordTypes *getKeywordByType(enum lineType_e type,
713	static struct singleLine * getLineByType(enum lineType_e type,	struct configFileInfo *cfi);
714	struct singleLine * line);	static enum lineType_e getTypeByKeyword(char *keyword,
715	static int checkForExtLinux(struct grubConfig * config);	struct configFileInfo *cfi);
716	struct singleLine * addLineTmpl(struct singleEntry * entry,	static struct singleLine *getLineByType(enum lineType_e type,
717	struct singleLine * tmplLine,	struct singleLine *line);
718	struct singleLine * prevLine,	static int checkForExtLinux(struct grubConfig *config);
719	const char * val,	struct singleLine *addLineTmpl(struct singleEntry *entry,
720	struct configFileInfo * cfi);	struct singleLine *tmplLine,
721	struct singleLine *  addLine(struct singleEntry * entry,	struct singleLine *prevLine,
722	struct configFileInfo * cfi,	const char *val, struct configFileInfo *cfi);
723	enum lineType_e type, char * defaultIndent,	struct singleLine *addLine(struct singleEntry *entry,
724	const char * val);	struct configFileInfo *cfi,
725		enum lineType_e type, char *defaultIndent,
726		const char *val);
727
728	static char * sdupprintf(const char *format, ...)	static char *sdupprintf(const char *format, ...)
729	#ifdef __GNUC__	#ifdef __GNUC__
730	__attribute__ ((format (printf, 1, 2)));	__attribute__ ((format(printf, 1, 2)));
731	#else	#else
732	;	;
733	#endif	#endif
734
735	static char * sdupprintf(const char *format, ...) {	static char *sdupprintf(const char *format, ...)
736	char *buf = NULL;	{
737	char c;	char *buf = NULL;
738	va_list args;	char c;
739	size_t size = 0;	va_list args;
740	va_start(args, format);	size_t size = 0;
741		va_start(args, format);
742	/* XXX requires C99 vsnprintf behavior */
743	size = vsnprintf(&c, 1, format, args) + 1;	/* XXX requires C99 vsnprintf behavior */
744	if (size == -1) {	size = vsnprintf(&c, 1, format, args) + 1;
745	printf("ERROR: vsnprintf behavior is not C99\n");	if (size == -1) {
746	abort();	printf("ERROR: vsnprintf behavior is not C99\n");
747	}	abort();
748		}
749
750	va_end(args);	va_end(args);
751	va_start(args, format);	va_start(args, format);
752
753	buf = malloc(size);	buf = malloc(size);
754	if (buf == NULL)	if (buf == NULL)
755	return NULL;	return NULL;
756	vsnprintf(buf, size, format, args);	vsnprintf(buf, size, format, args);
757	va_end (args);	va_end(args);
758
759	return buf;	return buf;
760	}	}
761
762	static struct keywordTypes * getKeywordByType(enum lineType_e type,	static inline int
763	struct configFileInfo * cfi) {	kwcmp(struct keywordTypes *kw, const char * label, int case_insensitive)
764	struct keywordTypes * kw;	{
765	for (kw = cfi->keywords; kw->key; kw++) {	int kwl = strlen(kw->key);
766	if (kw->type == type)	int ll = strlen(label);
767	return kw;	int rc;
768		int (*snc)(const char *s1, const char *s2, size_t n) =
769		case_insensitive ? strncasecmp : strncmp;
770		int (*sc)(const char *s1, const char *s2) =
771		case_insensitive ? strcasecmp : strcmp;
772
773		rc = snc(kw->key, label, kwl);
774		if (rc)
775		return rc;
776
777		for (int i = kwl; i < ll; i++) {
778		if (isspace(label[i]))
779		return 0;
780		if (kw->separatorChar && label[i] == kw->separatorChar)
781		return 0;
782		else if (kw->nextChar && label[i] == kw->nextChar)
783		return 0;
784		return sc(kw->key+kwl, label+kwl);
785	}	}
786	return NULL;	return 0;
787	}	}
788
789	static char * getpathbyspec(char *device) {	static enum lineType_e preferredLineType(enum lineType_e type,
790	if (!blkid)	struct configFileInfo *cfi)
791	blkid_get_cache(&blkid, NULL);	{
792		if (isEfi && cfi == &grub2ConfigType) {
793	return blkid_get_devname(blkid, device, NULL);	switch (type) {
794		case LT_KERNEL:
795		return isEfiOnly ? LT_KERNEL : LT_KERNEL_EFI;
796		case LT_INITRD:
797		return isEfiOnly ? LT_INITRD : LT_INITRD_EFI;
798		default:
799		return type;
800		}
801		#if defined(__i386__) || defined(__x86_64__)
802		} else if (cfi == &grub2ConfigType) {
803		switch (type) {
804		case LT_KERNEL:
805		return LT_KERNEL_16;
806		case LT_INITRD:
807		return LT_INITRD_16;
808		default:
809		return type;
810		}
811		#endif
812		}
813		return type;
814	}	}
815
816	static char * getuuidbydev(char *device) {	static struct keywordTypes *getKeywordByType(enum lineType_e type,
817	if (!blkid)	struct configFileInfo *cfi)
818	blkid_get_cache(&blkid, NULL);	{
819		for (struct keywordTypes * kw = cfi->keywords; kw->key; kw++) {
820	return blkid_get_tag_value(blkid, "UUID", device);	if (kw->type == type)
821		return kw;
822		}
823		return NULL;
824	}	}
825
826	static enum lineType_e getTypeByKeyword(char * keyword,	static char *getKeyByType(enum lineType_e type, struct configFileInfo *cfi)
827	struct configFileInfo * cfi) {	{
828	struct keywordTypes * kw;	struct keywordTypes *kt = getKeywordByType(type, cfi);
829	for (kw = cfi->keywords; kw->key; kw++) {	if (kt)
830	if (!strcmp(keyword, kw->key))	return kt->key;
831	return kw->type;	return "unknown";
	}
	return LT_UNKNOWN;
832	}	}
833
834	static struct singleLine * getLineByType(enum lineType_e type,	static char *getpathbyspec(char *device)
835	struct singleLine * line) {	{
836	dbgPrintf("getLineByType(%d): ", type);	if (!blkid)
837	for (; line; line = line->next) {	blkid_get_cache(&blkid, NULL);
838	dbgPrintf("%d:%s ", line->type,
839	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;
840	}	}
841
842	static int isBracketedTitle(struct singleLine * line) {	static char *getuuidbydev(char *device)
843	if (line->numElements == 1 && *line->elements[0].item == '[') {	{
844	int len = strlen(line->elements[0].item);	if (!blkid)
845	if (*(line->elements[0].item + len - 1) == ']') {	blkid_get_cache(&blkid, NULL);
846	/* FIXME: this is a hack... */
847	if (strcmp(line->elements[0].item, "[defaultboot]")) {	return blkid_get_tag_value(blkid, "UUID", device);
	return 1;
	}
	}
	}
	return 0;
848	}	}
849
850	static int isEntryStart(struct singleLine * line,	static enum lineType_e getTypeByKeyword(char *keyword,
851	struct configFileInfo * cfi) {	struct configFileInfo *cfi)
852	return line->type == cfi->entryStart || line->type == LT_OTHER ||	{
853	(cfi->titleBracketed && isBracketedTitle(line));	for (struct keywordTypes * kw = cfi->keywords; kw->key; kw++) {
854		if (!kwcmp(kw, keyword, cfi->caseInsensitive))
855		return kw->type;
856		}
857		return LT_UNKNOWN;
858	}	}
859
860	/* extract the title from within brackets (for zipl) */	static struct singleLine *getLineByType(enum lineType_e type,
861	static char * extractTitle(struct singleLine * line) {	struct singleLine *line)
862	/* bracketed title... let's extract it (leaks a byte) */	{
863	char * title;	dbgPrintf("getLineByType(%d): ", type);
864	title = strdup(line->elements[0].item);	for (; line; line = line->next) {
865	title++;	dbgPrintf("%d:%s ", line->type,
866	*(title + strlen(title) - 1) = '\0';	line->numElements ? line->elements[0].
867	return title;	item : "(empty)");
868	}	if (line->type & type)
869		break;
870	static int readFile(int fd, char ** bufPtr) {	}
871	int alloced = 0, size = 0, i = 0;	dbgPrintf(line ? "\n" : " (failed)\n");
872	char * buf = NULL;	return line;
873		}
	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;
	}
874
875	buf = realloc(buf, size + 2);	static int isBracketedTitle(struct singleLine *line)
876	if (size == 0)	{
877	buf[size++] = '\n';	if (line->numElements == 1 && *line->elements[0].item == '[') {
878	else	int len = strlen(line->elements[0].item);
879	if (buf[size - 1] != '\n')	if (*(line->elements[0].item + len - 1) == ']') {
880	buf[size++] = '\n';	/* FIXME: this is a hack... */
881	buf[size] = '\0';	if (strcmp(line->elements[0].item, "[defaultboot]")) {
882		return 1;
883		}
884		}
885		}
886		return 0;
887		}
888
889	*bufPtr = buf;	static int isEntryStart(struct singleLine *line, struct configFileInfo *cfi)
890		{
891		return line->type == cfi->entryStart || line->type == LT_OTHER ||
892		(cfi->titleBracketed && isBracketedTitle(line));
893		}
894
895	return 0;	/* extract the title from within brackets (for zipl) */
896		static char *extractTitle(struct grubConfig *cfg, struct singleLine *line)
897		{
898		/* bracketed title... let's extract it */
899		char *title = NULL;
900		if (line->type == LT_TITLE) {
901		char *tmp = line->elements[cfg->cfi->titlePosition].item;
902		if (cfg->cfi->titleBracketed) {
903		tmp++;
904		title = strdup(tmp);
905		*(title + strlen(title) - 1) = '\0';
906		} else {
907		title = strdup(tmp);
908		}
909		} else if (line->type == LT_MENUENTRY)
910		title = strdup(line->elements[1].item);
911		else
912		return NULL;
913		return title;
914	}	}
915
916	static void lineInit(struct singleLine * line) {	static int readFile(int fd, char **bufPtr)
917	line->indent = NULL;	{
918	line->elements = NULL;	int alloced = 0, size = 0, i = 0;
919	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);
	}
920
921	return newLine;	do {
922	}	size += i;
923		if ((size + 1024) > alloced) {
924		alloced += 4096;
925		buf = realloc(buf, alloced + 1);
926		}
927		} while ((i = read(fd, buf + size, 1024)) > 0);
928
929	static void lineFree(struct singleLine * line) {	if (i < 0) {
930	int i;	fprintf(stderr, _("error reading input: %s\n"),
931		strerror(errno));
932		free(buf);
933		return 1;
934		}
935
936	if (line->indent) free(line->indent);	buf = realloc(buf, size + 2);
937		if (size == 0)
938		buf[size++] = '\n';
939		else if (buf[size - 1] != '\n')
940		buf[size++] = '\n';
941		buf[size] = '\0';
942
943	for (i = 0; i < line->numElements; i++) {	*bufPtr = buf;
	free(line->elements[i].item);
	free(line->elements[i].indent);
	}
944
945	if (line->elements) free(line->elements);	return 0;
946	lineInit(line);	}
947
948		static void lineInit(struct singleLine *line)
949		{
950		line->type = LT_UNIDENTIFIED;
951		line->indent = NULL;
952		line->elements = NULL;
953		line->numElements = 0;
954		line->next = NULL;
955	}	}
956
957	static int lineWrite(FILE * out, struct singleLine * line,	struct singleLine *lineDup(struct singleLine *line)
958	struct configFileInfo * cfi) {	{
959	int i;	struct singleLine *newLine = malloc(sizeof(*newLine));
960
961	if (fprintf(out, "%s", line->indent) == -1) return -1;	newLine->indent = strdup(line->indent);
962		newLine->next = NULL;
963		newLine->type = line->type;
964		newLine->numElements = line->numElements;
965		newLine->elements = malloc(sizeof(*newLine->elements) *
966		newLine->numElements);
967
968	for (i = 0; i < line->numElements; i++) {	for (int i = 0; i < newLine->numElements; i++) {
969	if (i == 1 && line->type == LT_KERNELARGS && cfi->argsInQuotes)	newLine->elements[i].indent = strdup(line->elements[i].indent);
970	if (fputc('"', out) == EOF) return -1;	newLine->elements[i].item = strdup(line->elements[i].item);
971		}
972
973	if (fprintf(out, "%s", line->elements[i].item) == -1) return -1;	return newLine;
974	if (i < line->numElements - 1)	}
	if (fprintf(out, "%s", line->elements[i].indent) == -1) return -1;
	}
975
976	if (line->type == LT_KERNELARGS && cfi->argsInQuotes)	static void lineFree(struct singleLine *line)
977	if (fputc('"', out) == EOF) return -1;	{
978		if (line->indent)
979		free(line->indent);
980
981	if (fprintf(out, "\n") == -1) return -1;	for (int i = 0; i < line->numElements; i++) {
982		free(line->elements[i].item);
983		free(line->elements[i].indent);
984		}
985
986	return 0;	if (line->elements)
987		free(line->elements);
988		lineInit(line);
989	}	}
990
991	/* we've guaranteed that the buffer ends w/ \n\0 */	static int lineWrite(FILE * out, struct singleLine *line,
992	static int getNextLine(char ** bufPtr, struct singleLine * line,	struct configFileInfo *cfi)
993	struct configFileInfo * cfi) {	{
994	char * end;	if (fprintf(out, "%s", line->indent) == -1)
995	char * start = *bufPtr;	return -1;
	char * chptr;
	int elementsAlloced = 0;
	struct lineElement * element;
	int first = 1;
996
997	lineFree(line);	for (int i = 0; i < line->numElements; i++) {
998		/* Need to handle this, because we strip the quotes from
999		* menuentry when read it. */
1000		if (line->type == LT_MENUENTRY && i == 1) {
1001		if (!isquote(*line->elements[i].item)) {
1002		int substring = 0;
1003		/* If the line contains nested quotes, we did
1004		* not strip the "interna" quotes and we must
1005		* use the right quotes again when writing
1006		* the updated file. */
1007		for (int j = i; j < line->numElements; j++) {
1008		if (strchr(line->elements[i].item, '\'')
1009		!= NULL) {
1010		substring = 1;
1011		fprintf(out, "\"%s\"",
1012		line->elements[i].item);
1013		break;
1014		}
1015		}
1016		if (!substring)
1017		fprintf(out, "\'%s\'",
1018		line->elements[i].item);
1019		} else {
1020		fprintf(out, "%s", line->elements[i].item);
1021		}
1022		fprintf(out, "%s", line->elements[i].indent);
1023
1024	end = strchr(start, '\n');	continue;
1025	*end = '\0';	}
	*bufPtr = end + 1;
1026
1027	for (chptr = start; *chptr && isspace(*chptr); chptr++) ;	if (i == 1 && line->type == LT_KERNELARGS && cfi->argsInQuotes)
1028		if (fputc('"', out) == EOF)
1029		return -1;
1030
1031		if (fprintf(out, "%s", line->elements[i].item) == -1)
1032		return -1;
1033		if (i < line->numElements - 1 || line->type == LT_SET_VARIABLE)
1034		if (fprintf(out, "%s", line->elements[i].indent) == -1)
1035		return -1;
1036		}
1037
1038		if (line->type == LT_KERNELARGS && cfi->argsInQuotes)
1039		if (fputc('"', out) == EOF)
1040		return -1;
1041
1042	line->indent = strndup(start, chptr - start);	if (fprintf(out, "\n") == -1)
1043	start = chptr;	return -1;
1044
1045	while (start < end) {	return 0;
1046	/* we know !isspace(*start) */	}
1047
1048	if (elementsAlloced == line->numElements) {	/* we've guaranteed that the buffer ends w/ \n\0 */
1049	elementsAlloced += 5;	static int getNextLine(char **bufPtr, struct singleLine *line,
1050	line->elements = realloc(line->elements,	struct configFileInfo *cfi)
1051	sizeof(*line->elements) * elementsAlloced);	{
1052	}	char *end;
1053		char *start = *bufPtr;
1054		char *chptr;
1055		int elementsAlloced = 0;
1056		struct lineElement *element;
1057		int first = 1;
1058
1059	element = line->elements + line->numElements;	lineFree(line);
1060
1061	chptr = start;	end = strchr(start, '\n');
1062	while (*chptr && !isspace(*chptr)) {	*end = '\0';
1063	if (first && *chptr == '=') break;	*bufPtr = end + 1;
	chptr++;
	}
	element->item = strndup(start, chptr - start);
	start = chptr;
1064
1065	/* 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));
1066
1067	element->indent = strndup(start, chptr - start);	line->indent = strndup(start, chptr - start);
1068	start = chptr;	start = chptr;
1069
1070	line->numElements++;	while (start < end) {
1071	first = 0;	/* we know !isspace(*start) */
	}
1072
1073	if (!line->numElements)	if (elementsAlloced == line->numElements) {
1074	line->type = LT_WHITESPACE;	elementsAlloced += 5;
1075	else {	line->elements = realloc(line->elements,
1076	line->type = getTypeByKeyword(line->elements[0].item, cfi);	sizeof(*line->elements) *
1077	if (line->type == LT_UNKNOWN) {	elementsAlloced);
1078	/* 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);
1079
1080	fullLine = malloc(len + 1);	element = line->elements + line->numElements;
	strcpy(fullLine, line->indent);
	free(line->indent);
	line->indent = fullLine;
1081
1082	for (i = 0; i < line->numElements; i++) {	chptr = start;
1083	strcat(fullLine, line->elements[i].item);	while (*chptr && !isspace(*chptr)) {
1084	strcat(fullLine, line->elements[i].indent);	if (first && *chptr == '=')
1085	free(line->elements[i].item);	break;
1086	free(line->elements[i].indent);	chptr++;
1087	}	}
1088		if (line->type == LT_UNIDENTIFIED)
1089		line->type = getTypeByKeyword(start, cfi);
1090		element->item = strndup(start, chptr - start);
1091		start = chptr;
1092
1093		/* lilo actually accepts the pathological case of
1094		* append = " foo " */
1095		if (*start == '=')
1096		chptr = start + 1;
1097		else
1098		chptr = start;
1099
1100		do {
1101		for (; *chptr && isspace(*chptr); chptr++) ;
1102		if (*chptr == '=')
1103		chptr = chptr + 1;
1104		} while (isspace(*chptr));
1105
1106	line->type = LT_WHITESPACE;	element->indent = strndup(start, chptr - start);
1107	line->numElements = 0;	start = chptr;
	}
	} else {
	struct keywordTypes *kw;
1108
1109	kw = getKeywordByType(line->type, cfi);	line->numElements++;
1110		first = 0;
1111		}
1112
1113	/* space isn't the only separator, we need to split	if (!line->numElements)
1114	* elements up more	line->type = LT_WHITESPACE;
1115	*/	else {
1116	if (!isspace(kw->separatorChar)) {	line->type = getTypeByKeyword(line->elements[0].item, cfi);
1117	int i;	if (line->type == LT_UNKNOWN) {
1118	char indent[2] = "";	/* zipl does [title] instead of something reasonable
1119	indent[0] = kw->separatorChar;	* like all the other boot loaders.  kind of ugly */
1120	for (i = 1; i < line->numElements; i++) {	if (cfi->titleBracketed && isBracketedTitle(line)) {
1121	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];
1122	}	}
	line->numElements += numNewElements;
1123
1124	p = line->elements[i].item;	/* this is awkward, but we need to be able to handle
1125	while (*p != '\0') {	* keywords that begin with a # (specifically for
1126		* #boot in grub.conf), but still make comments lines
1127	while (*p != kw->separatorChar && *p != '\0') p++;	* with no elements (everything stored in the indent
1128	if (*p == '\0') {	*/
1129	break;	if (*line->elements[0].item == '#') {
1130		char *fullLine;
1131		int len;
1132
1133		len = strlen(line->indent);
1134		for (int i = 0; i < line->numElements; i++)
1135		len += strlen(line->elements[i].item) +
1136		strlen(line->elements[i].indent);
1137
1138		fullLine = malloc(len + 1);
1139		strcpy(fullLine, line->indent);
1140		free(line->indent);
1141		line->indent = fullLine;
1142
1143		for (int i = 0; i < line->numElements; i++) {
1144		strcat(fullLine,
1145		line->elements[i].item);
1146		strcat(fullLine,
1147		line->elements[i].indent);
1148		free(line->elements[i].item);
1149		free(line->elements[i].indent);
1150	}	}
1151
1152	free(line->elements[i].indent);	line->type = LT_WHITESPACE;
1153	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;
1154	}	}
1155	}	} else if (line->type == LT_INITRD) {
1156	}	struct keywordTypes *kw;
	}
	}
1157
1158	return 0;	kw = getKeywordByType(line->type, cfi);
	}
1159
1160	static struct grubConfig * readConfig(const char * inName,	/* space isn't the only separator, we need to split
1161	struct configFileInfo * cfi) {	* elements up more
1162	int in;	*/
1163	char * incoming = NULL, * head;	if (!isspace(kw->separatorChar)) {
1164	int rc;	char indent[2] = "";
1165	int sawEntry = 0;	indent[0] = kw->separatorChar;
1166	int movedLine = 0;	for (int i = 1; i < line->numElements; i++) {
1167	struct grubConfig * cfg;	char *p;
1168	struct singleLine * last = NULL, * line, * defaultLine = NULL;	int numNewElements;
1169	char * end;
1170	struct singleEntry * entry = NULL;	numNewElements = 0;
1171	int i, len;	p = line->elements[i].item;
1172	char * buf;	while (*p != '\0') {
1173		if (*p == kw->separatorChar)
1174	if (!strcmp(inName, "-")) {	numNewElements++;
1175	in = 0;	p++;
1176	} else {	}
1177	if ((in = open(inName, O_RDONLY)) < 0) {	if (line->numElements +
1178	fprintf(stderr, _("error opening %s for read: %s\n"),	numNewElements >= elementsAlloced) {
1179	inName, strerror(errno));	elementsAlloced +=
1180	return NULL;	numNewElements + 5;
1181	}	line->elements =
1182	}	realloc(line->elements,
1183		sizeof(*line->
1184		elements) *
1185		elementsAlloced);
1186		}
1187
1188	rc = readFile(in, &incoming);	for (int j = line->numElements; j > i;
1189	close(in);	j--) {
1190	if (rc) return NULL;	line->elements[j +
1191		numNewElements] =
1192	head = incoming;	line->elements[j];
1193	cfg = malloc(sizeof(*cfg));	}
1194	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);
1195
1196	if (getNextLine(&head, line, cfi)) {	p = line->elements[i].item;
1197	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 (isEntryStart(line, cfi)) {
	sawEntry = 1;
	if (!entry) {
	cfg->entries = malloc(sizeof(*entry));
	entry = cfg->entries;
	} else {
	entry->next = malloc(sizeof(*entry));
	entry = entry->next;
	}
1198
1199	entry->skip = 0;	while (*p != kw->separatorChar
1200	entry->multiboot = 0;	&& *p != '\0')
1201	entry->lines = NULL;	p++;
1202	entry->next = NULL;	if (*p == '\0') {
1203	}	break;
1204		}
1205	if (line->type == LT_DEFAULT && line->numElements == 2) {
1206	cfg->flags &= ~GRUB_CONFIG_NO_DEFAULT;	line->elements[i + 1].indent =
1207	defaultLine = line;	line->elements[i].indent;
1208		line->elements[i].indent =
1209	} else if (line->type == LT_KERNEL) {	strdup(indent);
1210	/* if by some freak chance this is multiboot and the "module"	*p++ = '\0';
1211	* lines came earlier in the template, make sure to use LT_HYPER	i++;
1212	* instead of LT_KERNEL now	line->elements[i].item =
1213	*/	strdup(p);
1214	if (entry->multiboot)	}
1215	line->type = LT_HYPER;	}
1216		}
1217	} else if (line->type == LT_MBMODULE) {	} else if (line->type == LT_SET_VARIABLE) {
1218	/* go back and fix the LT_KERNEL line to indicate LT_HYPER	/* and if it's a "set blah=" we need to split it
1219	* instead, now that we know this is a multiboot entry.	* yet a third way to avoid rhbz# XXX FIXME :/
1220	* This only applies to grub, but that's the only place we	*/
1221	* should find LT_MBMODULE lines anyway.	char *eq;
1222	*/	int l;
1223	struct singleLine * l;	int numElements = line->numElements;
1224	for (l = entry->lines; l; l = l->next) {	struct lineElement *newElements;
1225	if (l->type == LT_HYPER)	eq = strchr(line->elements[1].item, '=');
1226	break;	if (!eq)
1227	else if (l->type == LT_KERNEL) {	return 0;
1228	l->type = LT_HYPER;	l = eq - line->elements[1].item;
1229	break;	if (eq[1] != 0)
1230	}	numElements++;
1231	}	newElements = calloc(numElements,sizeof (*newElements));
1232	entry->multiboot = 1;	memcpy(&newElements[0], &line->elements[0],
1233		sizeof (newElements[0]));
1234	} else if (line->type == LT_HYPER) {	newElements[1].item =
1235	entry->multiboot = 1;	strndup(line->elements[1].item, l);
1236		newElements[1].indent = "=";
1237	} else if (line->type == LT_FALLBACK && line->numElements == 2) {	*(eq++) = '\0';
1238	cfg->fallbackImage = strtol(line->elements[1].item, &end, 10);	newElements[2].item = strdup(eq);
1239	if (*end) cfg->fallbackImage = -1;	free(line->elements[1].item);
1240		if (line->elements[1].indent)
1241	} else if (line->type == LT_TITLE && line->numElements > 1) {	newElements[2].indent = line->elements[1].indent;
1242	/* make the title a single argument (undoing our parsing) */	for (int i = 2; i < line->numElements; i++) {
1243	len = 0;	newElements[i+1].item = line->elements[i].item;
1244	for (i = 1; i < line->numElements; i++) {	newElements[i+1].indent =
1245	len += strlen(line->elements[i].item);	line->elements[i].indent;
1246	len += strlen(line->elements[i].indent);	}
1247	}	free(line->elements);
1248	buf = malloc(len + 1);	line->elements = newElements;
1249	*buf = '\0';	line->numElements = numElements;
1250		}
1251		}
1252
1253	for (i = 1; i < line->numElements; i++) {	return 0;
1254	strcat(buf, line->elements[i].item);	}
	free(line->elements[i].item);
1255
1256	if ((i + 1) != line->numElements) {	static int isnumber(const char *s)
1257	strcat(buf, line->elements[i].indent);	{
1258	free(line->elements[i].indent);	int i;
1259	}	for (i = 0; s[i] != '\0'; i++)
1260	}	if (s[i] < '0' || s[i] > '9')
1261		return 0;
1262	line->elements[1].indent =	return i;
1263	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;
1264
1265	if (sawEntry) {	static struct grubConfig *readConfig(const char *inName,
1266	if (!entry->lines)	struct configFileInfo *cfi)
1267	entry->lines = line;	{
1268	else	int in;
1269	last->next = line;	char *incoming = NULL, *head;
1270	dbgPrintf("readConfig added %d to %p\n", line->type, entry);	int rc;
1271		int sawEntry = 0;
1272		int movedLine = 0;
1273		struct grubConfig *cfg;
1274		struct singleLine *last = NULL, *line, *defaultLine = NULL;
1275		char *end;
1276		struct singleEntry *entry = NULL;
1277		int len;
1278		char *buf;
1279
1280		if (inName == NULL) {
1281		printf("Could not find bootloader configuration\n");
1282		exit(1);
1283		} else if (!strcmp(inName, "-")) {
1284		in = 0;
1285	} else {	} else {
1286	if (!cfg->theLines)	if ((in = open(inName, O_RDONLY)) < 0) {
1287	cfg->theLines = line;	fprintf(stderr, _("error opening %s for read: %s\n"),
1288	else	inName, strerror(errno));
1289	last->next = line;	return NULL;
1290	dbgPrintf("readConfig added %d to cfg\n", line->type);	}
1291	}	}
1292
1293	last = line;	rc = readFile(in, &incoming);
1294	}	close(in);
1295		if (rc)
1296		return NULL;
1297
1298		head = incoming;
1299		cfg = malloc(sizeof(*cfg));
1300		cfg->primaryIndent = strdup("");
1301		cfg->secondaryIndent = strdup("\t");
1302		cfg->flags = GRUB_CONFIG_NO_DEFAULT;
1303		cfg->cfi = cfi;
1304		cfg->theLines = NULL;
1305		cfg->entries = NULL;
1306		cfg->fallbackImage = 0;
1307		cfg->isModified = 0;
1308
1309		/* copy everything we have */
1310		while (*head) {
1311		line = malloc(sizeof(*line));
1312		lineInit(line);
1313
1314		if (getNextLine(&head, line, cfi)) {
1315		free(line);
1316		/* XXX memory leak of everything in cfg */
1317		return NULL;
1318		}
1319
1320	free(incoming);	if (!sawEntry && line->numElements) {
1321		free(cfg->primaryIndent);
1322		cfg->primaryIndent = strdup(line->indent);
1323		} else if (line->numElements) {
1324		free(cfg->secondaryIndent);
1325		cfg->secondaryIndent = strdup(line->indent);
1326		}
1327
1328	if (defaultLine) {	if (isEntryStart(line, cfi) || (cfg->entries && !sawEntry)) {
1329	if (cfi->defaultSupportSaved &&	sawEntry = 1;
1330	!strncmp(defaultLine->elements[1].item, "saved", 5)) {	if (!entry) {
1331	cfg->defaultImage = DEFAULT_SAVED;	cfg->entries = malloc(sizeof(*entry));
1332	} else if (cfi->defaultIsIndex) {	entry = cfg->entries;
1333	cfg->defaultImage = strtol(defaultLine->elements[1].item, &end, 10);	} else {
1334	if (*end) cfg->defaultImage = -1;	entry->next = malloc(sizeof(*entry));
1335	} else if (defaultLine->numElements >= 2) {	entry = entry->next;
1336	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;
	}
1337
1338	if (entry){	entry->skip = 0;
1339	cfg->defaultImage = i;	entry->multiboot = 0;
1340	}else{	entry->lines = NULL;
1341	cfg->defaultImage = -1;	entry->next = NULL;
1342	}	}
	}
	} else {
	cfg->defaultImage = 0;
	}
1343
1344	return cfg;	if (line->type == LT_SET_VARIABLE) {
1345	}	dbgPrintf("found 'set' command (%d elements): ",
1346		line->numElements);
1347		dbgPrintf("%s", line->indent);
1348		for (int i = 0; i < line->numElements; i++)
1349		dbgPrintf("\"%s\"%s", line->elements[i].item,
1350		line->elements[i].indent);
1351		dbgPrintf("\n");
1352		struct keywordTypes *kwType =
1353		getKeywordByType(LT_DEFAULT, cfi);
1354		if (kwType && line->numElements == 3
1355		&& !strcmp(line->elements[1].item, kwType->key)
1356		&& !is_special_grub2_variable(
1357		line->elements[2].item)) {
1358		dbgPrintf("Line sets default config\n");
1359		cfg->flags &= ~GRUB_CONFIG_NO_DEFAULT;
1360		defaultLine = line;
1361		}
1362		} else if (iskernel(line->type)) {
1363		/* if by some freak chance this is multiboot and the
1364		* "module" lines came earlier in the template, make
1365		* sure to use LT_HYPER instead of LT_KERNEL now
1366		*/
1367		if (entry && entry->multiboot)
1368		line->type = LT_HYPER;
1369
1370	static void writeDefault(FILE * out, char * indent,	} else if (line->type == LT_MBMODULE) {
1371	char * separator, struct grubConfig * cfg) {	/* go back and fix the LT_KERNEL line to indicate
1372	struct singleEntry * entry;	* LT_HYPER instead, now that we know this is a
1373	struct singleLine * line;	* multiboot entry.  This only applies to grub, but
1374	int i;	* that's the only place we should find LT_MBMODULE
1375		* lines anyway.
1376		*/
1377		for (struct singleLine * l = entry->lines; l;
1378		l = l->next) {
1379		if (l->type == LT_HYPER)
1380		break;
1381		else if (iskernel(l->type)) {
1382		l->type = LT_HYPER;
1383		break;
1384		}
1385		}
1386		entry->multiboot = 1;
1387
1388	if (!cfg->defaultImage && cfg->flags == GRUB_CONFIG_NO_DEFAULT) return;	} else if (line->type == LT_HYPER) {
1389		entry->multiboot = 1;
1390
1391	if (cfg->defaultImage == DEFAULT_SAVED)	} else if (line->type == LT_FALLBACK && line->numElements == 2) {
1392	fprintf(out, "%sdefault%ssaved\n", indent, separator);	cfg->fallbackImage =
1393	else if (cfg->defaultImage > -1) {	strtol(line->elements[1].item, &end, 10);
1394	if (cfg->cfi->defaultIsIndex) {	if (*end)
1395	fprintf(out, "%sdefault%s%d\n", indent, separator,	cfg->fallbackImage = -1;
1396	cfg->defaultImage);
1397	} else {	} else if ((line->type == LT_DEFAULT && cfi->defaultIsUnquoted)
1398	int image = cfg->defaultImage;	|| (line->type == LT_TITLE
1399		&& line->numElements > 1)) {
1400		/* make the title/default a single argument (undoing
1401		* our parsing) */
1402		len = 0;
1403		for (int i = 1; i < line->numElements; i++) {
1404		len += strlen(line->elements[i].item);
1405		len += strlen(line->elements[i].indent);
1406		}
1407		buf = malloc(len + 1);
1408		*buf = '\0';
1409
1410	entry = cfg->entries;	for (int i = 1; i < line->numElements; i++) {
1411	while (entry && entry->skip) entry = entry->next;	strcat(buf, line->elements[i].item);
1412		free(line->elements[i].item);
1413
1414		if ((i + 1) != line->numElements) {
1415		strcat(buf, line->elements[i].indent);
1416		free(line->elements[i].indent);
1417		}
1418		}
1419
1420	i = 0;	line->elements[1].indent =
1421	while (entry && i < image) {	line->elements[line->numElements - 1].indent;
1422	entry = entry->next;	line->elements[1].item = buf;
1423		line->numElements = 2;
1424		} else if (line->type == LT_MENUENTRY && line->numElements > 3) {
1425		/* let --remove-kernel="TITLE=what" work */
1426		len = 0;
1427		char *extras;
1428		char *title;
1429		/* initially unseen value */
1430		char quote_char = '\0';
1431
1432		for (int i = 1; i < line->numElements; i++) {
1433		len += strlen(line->elements[i].item);
1434		len += strlen(line->elements[i].indent);
1435		}
1436		buf = malloc(len + 1);
1437		*buf = '\0';
1438
1439	while (entry && entry->skip) entry = entry->next;	/* allocate mem for extra flags. */
1440	i++;	extras = malloc(len + 1);
1441	}	*extras = '\0';
1442
1443		/* get title. */
1444		for (int i = 0; i < line->numElements; i++) {
1445		if (!strcmp
1446		(line->elements[i].item, "menuentry"))
1447		continue;
1448		if (isquote(*line->elements[i].item)
1449		&& quote_char == '\0') {
1450		/* ensure we properly pair off quotes */
1451		quote_char = *line->elements[i].item;
1452		title = line->elements[i].item + 1;
1453		} else {
1454		title = line->elements[i].item;
1455		}
1456
1457	if (!entry) return;	len = strlen(title);
1458		if (title[len - 1] == quote_char) {
1459		strncat(buf, title, len - 1);
1460		break;
1461		} else {
1462		strcat(buf, title);
1463		strcat(buf, line->elements[i].indent);
1464		}
1465		}
1466
1467	line = getLineByType(LT_TITLE, entry->lines);	/* get extras */
1468		int count = 0;
1469		quote_char = '\0';
1470		for (int i = 0; i < line->numElements; i++) {
1471		if (count >= 2) {
1472		strcat(extras, line->elements[i].item);
1473		strcat(extras,
1474		line->elements[i].indent);
1475		}
1476
1477	if (line && line->numElements >= 2)	if (!strcmp
1478	fprintf(out, "%sdefault%s%s\n", indent, separator,	(line->elements[i].item, "menuentry"))
1479	line->elements[1].item);	continue;
1480	else if (line && (line->numElements == 1) &&
1481	cfg->cfi->titleBracketed) {	/* count ' or ", there should be two in menuentry line. */
1482	fprintf(out, "%sdefault%s%s\n", indent, separator,	if (isquote(*line->elements[i].item)
1483	extractTitle(line));	&& quote_char == '\0') {
1484	}	/* ensure we properly pair off quotes */
1485	}	quote_char = *line->elements[i].item;
1486	}	count++;
1487	}	}
1488
1489	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;
	}
	}
	}
1490
1491	line = cfg->theLines;	if (line->elements[i].item[len - 1] ==
1492	while (line) {	quote_char)
1493	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;
	}
	}
1494
1495	line = line->next;	/* ok, we get the final ' or ", others are extras. */
1496	}	}
1497		line->elements[1].indent =
1498		line->elements[line->numElements - 2].indent;
1499		line->elements[1].item = buf;
1500		line->elements[2].indent =
1501		line->elements[line->numElements - 2].indent;
1502		line->elements[2].item = extras;
1503		line->numElements = 3;
1504		} else if (line->type == LT_KERNELARGS && cfi->argsInQuotes) {
1505		/* Strip off any " which may be present; they'll be
1506		* put back on write. This is one of the few (the
1507		* only?) places that grubby canonicalizes the output
1508		*/
1509		if (line->numElements >= 2) {
1510		int last, len;
1511
1512	if (needs & MAIN_DEFAULT) {	if (isquote(*line->elements[1].item))
1513	writeDefault(out, cfg->primaryIndent, "=", cfg);	memmove(line->elements[1].item,
1514	needs &= ~MAIN_DEFAULT;	line->elements[1].item + 1,
1515	}	strlen(line->elements[1].item +
1516		1) + 1);
1517	i = 0;
1518	while ((entry = findEntryByIndex(cfg, i++))) {	last = line->numElements - 1;
1519	if (entry->skip) continue;	len = strlen(line->elements[last].item) - 1;
1520		if (isquote(line->elements[last].item[len]))
1521	line = entry->lines;	line->elements[last].item[len] = '\0';
1522	while (line) {	}
1523	if (lineWrite(out, line, cfg->cfi) == -1) {	}
	fprintf(stderr, _("grubby: error writing %s: %s\n"),
	tmpOutName, strerror(errno));
	fclose(out);
	unlink(tmpOutName);
	return 1;
	}
	line = line->next;
	}
	}
1524
1525	if (tmpOutName) {	if (line->type == LT_DEFAULT && line->numElements == 2) {
1526	if (rename(tmpOutName, outName)) {	cfg->flags &= ~GRUB_CONFIG_NO_DEFAULT;
1527	fprintf(stderr, _("grubby: error moving %s to %s: %s\n"),	defaultLine = line;
1528	tmpOutName, outName, strerror(errno));	}
	unlink(outName);
	return 1;
	}
	}
1529
1530	return 0;	/* If we find a generic config option which should live at the
1531	}	top of the file, move it there. Old versions of grubby were
1532		probably responsible for putting new images in the wrong
1533		place in front of it anyway. */
1534		if (sawEntry && line->type == LT_GENERIC) {
1535		struct singleLine **l = &cfg->theLines;
1536		struct singleLine **last_nonws = &cfg->theLines;
1537		while (*l) {
1538		if ((*l)->type != LT_WHITESPACE)
1539		last_nonws = &((*l)->next);
1540		l = &((*l)->next);
1541		}
1542		line->next = *last_nonws;
1543		*last_nonws = line;
1544		movedLine = 1;
1545		continue; /* without setting 'last' */
1546		}
1547
1548	static int numEntries(struct grubConfig *cfg) {	/* If a second line of whitespace happens after a generic
1549	int i = 0;	* option which was moved, drop it. */
1550	struct singleEntry * entry;	if (movedLine && line->type == LT_WHITESPACE
1551		&& last->type == LT_WHITESPACE) {
1552	entry = cfg->entries;	lineFree(line);
1553	while (entry) {	free(line);
1554	if (!entry->skip)	movedLine = 0;
1555	i++;	continue;
1556	entry = entry->next;	}
1557	}	movedLine = 0;
	return i;
	}
1558
1559	static char *findDiskForRoot()	if (sawEntry) {
1560	{	if (!entry->lines)
1561	int fd;	entry->lines = line;
1562	char buf[65536];	else
1563	char *devname;	last->next = line;
1564	char *chptr;	dbgPrintf("readConfig added %s to %p\n",
1565	int rc;	getKeyByType(line->type, cfi), entry);
1566
1567	if ((fd = open(_PATH_MOUNTED, O_RDONLY)) < 0) {	/* we could have seen this outside of an entry... if
1568	fprintf(stderr, "grubby: failed to open %s: %s\n",	* so, we ignore it like any other line we don't grok
1569	_PATH_MOUNTED, strerror(errno));	*/
1570	return NULL;	if (line->type == LT_ENTRY_END && sawEntry)
1571	}	sawEntry = 0;
1572		} else {
1573		if (!cfg->theLines)
1574		cfg->theLines = line;
1575		else
1576		last->next = line;
1577		dbgPrintf("readConfig added %s to cfg\n",
1578		getKeyByType(line->type, cfi));
1579		}
1580
1581	rc = read(fd, buf, sizeof(buf) - 1);	last = line;
1582	if (rc <= 0) {	}
	fprintf(stderr, "grubby: failed to read %s: %s\n",
	_PATH_MOUNTED, strerror(errno));
	close(fd);
	return NULL;
	}
	close(fd);
	buf[rc] = '\0';
	chptr = buf;
	while (chptr && chptr != buf+rc) {
	devname = chptr;
	/*
	* The first column of a mtab entry is the device, but if the entry is a
	* special device it won't start with /, so move on to the next line.
	*/
	if (*devname != '/') {
	chptr = strchr(chptr, '\n');
	if (chptr)
	chptr++;
	continue;
	}
	/* Seek to the next space */
	chptr = strchr(chptr, ' ');
	if (!chptr) {
	fprintf(stderr, "grubby: error parsing %s: %s\n",
	_PATH_MOUNTED, strerror(errno));
	return NULL;
	}
	/*
	* The second column of a mtab entry is the mount point, we are looking
	* for '/' obviously.
	*/
	if (*(++chptr) == '/' && *(++chptr) == ' ') {
	/*
	* Move back 2, which is the first space after the device name, set
	* it to \0 so strdup will just get the devicename.
	*/
	chptr -= 2;
	*chptr = '\0';
	return strdup(devname);
	}
	/* Next line */
	chptr = strchr(chptr, '\n');
	if (chptr)
	chptr++;
	}
1583
1584	return NULL;	free(incoming);
	}
1585
1586	int suitableImage(struct singleEntry * entry, const char * bootPrefix,	dbgPrintf("defaultLine is %s\n", defaultLine ? "set" : "unset");
1587	int skipRemoved, int flags) {	if (defaultLine) {
1588	struct singleLine * line;	if (defaultLine->numElements > 2 &&
1589	char * fullName;	cfi->defaultSupportSaved &&
1590	int i;	!strncmp(defaultLine->elements[2].item,
1591	char * dev;	"\"${saved_entry}\"", 16)) {
1592	char * rootspec;	cfg->cfi->defaultIsSaved = 1;
1593	char * rootdev;	cfg->defaultImage = DEFAULT_SAVED_GRUB2;
1594		if (cfg->cfi->getEnv) {
1595	if (skipRemoved && entry->skip) return 0;	char *defTitle =
1596		cfi->getEnv(cfg->cfi, "saved_entry");
1597	line = getLineByType(LT_KERNEL|LT_HYPER, entry->lines);	if (defTitle) {
1598	if (!line || line->numElements < 2) return 0;	int index = 0;
1599		if (isnumber(defTitle)) {
1600	if (flags & GRUBBY_BADIMAGE_OKAY) return 1;	index = atoi(defTitle);
1601		entry =
1602	fullName = alloca(strlen(bootPrefix) +	findEntryByIndex(cfg,
1603	strlen(line->elements[1].item) + 1);	index);
1604	rootspec = getRootSpecifier(line->elements[1].item);	} else {
1605	sprintf(fullName, "%s%s", bootPrefix,	entry =
1606	line->elements[1].item + (rootspec ? strlen(rootspec) : 0));	findEntryByTitle(cfg,
1607	if (access(fullName, R_OK)) return 0;	defTitle,
1608		&index);
1609	for (i = 2; i < line->numElements; i++)	}
1610	if (!strncasecmp(line->elements[i].item, "root=", 5)) break;	if (entry)
1611	if (i < line->numElements) {	cfg->defaultImage = index;
1612	dev = line->elements[i].item + 5;	}
1613	} else {	}
1614	/* look for a lilo style LT_ROOT line */	} else if (cfi->defaultIsVariable) {
1615	line = getLineByType(LT_ROOT, entry->lines);	if (defaultLine->numElements == 2) {
1616		char *value = defaultLine->elements[1].item + 8;
1617		while (*value && (*value == '"' ||
1618		*value == '\'' ||
1619		*value == ' ' ||
1620		*value == '\t'))
1621		value++;
1622		cfg->defaultImage = strtol(value, &end, 10);
1623		while (*end && (*end == '"' || *end == '\'' ||
1624		*end == ' ' || *end == '\t'))
1625		end++;
1626		if (*end)
1627		cfg->defaultImage = NO_DEFAULT_ENTRY;
1628		} else if (defaultLine->numElements == 3) {
1629		char *value = defaultLine->elements[2].item;
1630		while (*value && (*value == '"' ||
1631		*value == '\'' ||
1632		*value == ' ' ||
1633		*value == '\t'))
1634		value++;
1635		cfg->defaultImage = strtol(value, &end, 10);
1636		while (*end && (*end == '"' || *end == '\'' ||
1637		*end == ' ' || *end == '\t'))
1638		end++;
1639		if (*end)
1640		cfg->defaultImage = NO_DEFAULT_ENTRY;
1641		}
1642		} else if (cfi->defaultSupportSaved &&
1643		!strncmp(defaultLine->elements[1].item, "saved",
1644		5)) {
1645		cfg->defaultImage = DEFAULT_SAVED;
1646		} else if (cfi->defaultIsIndex) {
1647		cfg->defaultImage =
1648		strtol(defaultLine->elements[1].item, &end, 10);
1649		if (*end)
1650		cfg->defaultImage = NO_DEFAULT_ENTRY;
1651		} else if (defaultLine->numElements >= 2) {
1652		int i = 0;
1653		while ((entry = findEntryByIndex(cfg, i))) {
1654		for (line = entry->lines; line;
1655		line = line->next)
1656		if (line->type == LT_TITLE)
1657		break;
1658
1659		if (!cfi->titleBracketed) {
1660		if (line && (line->numElements >= 2) &&
1661		!strcmp(defaultLine->elements[1].
1662		item,
1663		line->elements[1].item))
1664		break;
1665		} else if (line) {
1666		if (!strcmp
1667		(defaultLine->elements[1].item,
1668		extractTitle(cfg, line)))
1669		break;
1670		}
1671		i++;
1672		entry = NULL;
1673		}
1674
1675	if (line && line->numElements >= 2) {	if (entry) {
1676	dev = line->elements[1].item;	cfg->defaultImage = i;
1677		} else {
1678		cfg->defaultImage = NO_DEFAULT_ENTRY;
1679		}
1680		}
1681		} else if (cfg->cfi->defaultIsSaved && cfg->cfi->getEnv) {
1682		char *defTitle = cfi->getEnv(cfg->cfi, "saved_entry");
1683		if (defTitle) {
1684		int index = 0;
1685		if (isnumber(defTitle)) {
1686		index = atoi(defTitle);
1687		entry = findEntryByIndex(cfg, index);
1688		} else {
1689		entry = findEntryByTitle(cfg, defTitle, &index);
1690		}
1691		if (entry)
1692		cfg->defaultImage = index;
1693		}
1694	} else {	} else {
1695	/* 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;
	}
1696	}	}
	}
1697
1698	dev = getpathbyspec(dev);	return cfg;
1699	if (!dev)	}
	return 0;
1700
1701	rootdev = findDiskForRoot();	static void writeDefault(FILE * out, char *indent,
1702	if (!rootdev)	char *separator, struct grubConfig *cfg)
1703	return 0;	{
1704		struct singleEntry *entry;
1705		struct singleLine *line;
1706		int i;
1707
1708		if (!cfg->defaultImage && cfg->flags == GRUB_CONFIG_NO_DEFAULT)
1709		return;
1710
1711		if (cfg->defaultImage == DEFAULT_SAVED)
1712		fprintf(out, "%sdefault%ssaved\n", indent, separator);
1713		else if (cfg->cfi->defaultIsSaved) {
1714		fprintf(out, "%sset default=\"${saved_entry}\"\n", indent);
1715		if (cfg->defaultImage >= FIRST_ENTRY_INDEX && cfg->cfi->setEnv) {
1716		char *title;
1717		int trueIndex, currentIndex;
1718
1719		trueIndex = 0;
1720		currentIndex = 0;
1721
1722		while ((entry = findEntryByIndex(cfg, currentIndex))) {
1723		if (!entry->skip) {
1724		if (trueIndex == cfg->defaultImage) {
1725		break;
1726		}
1727		trueIndex++;
1728		}
1729		currentIndex++;
1730		}
1731		line = getLineByType(LT_MENUENTRY, entry->lines);
1732		if (!line)
1733		line = getLineByType(LT_TITLE, entry->lines);
1734		if (line) {
1735		title = extractTitle(cfg, line);
1736		if (title)
1737		cfg->cfi->setEnv(cfg->cfi,
1738		"saved_entry", title);
1739		}
1740		}
1741		} else if (cfg->defaultImage >= FIRST_ENTRY_INDEX) {
1742		if (cfg->cfi->defaultIsIndex) {
1743		if (cfg->cfi->defaultIsVariable) {
1744		fprintf(out, "%sset default=\"%d\"\n", indent,
1745		cfg->defaultImage);
1746		} else {
1747		fprintf(out, "%sdefault%s%d\n", indent,
1748		separator, cfg->defaultImage);
1749		}
1750		} else {
1751		int image = cfg->defaultImage;
1752
1753	if (!getuuidbydev(rootdev) || !getuuidbydev(dev)) {	entry = cfg->entries;
1754	free(rootdev);	while (entry && entry->skip)
1755	return 0;	entry = entry->next;
1756	}
1757		i = 0;
1758		while (entry && i < image) {
1759		entry = entry->next;
1760
1761	if (strcmp(getuuidbydev(rootdev), getuuidbydev(dev))) {	while (entry && entry->skip)
1762	free(rootdev);	entry = entry->next;
1763	return 0;	i++;
1764	}	}
1765
1766	free(rootdev);	if (!entry)
1767		return;
1768
1769	return 1;	line = getLineByType(LT_TITLE, entry->lines);
	}
1770
1771	/* returns the first match on or after the one pointed to by index (if index	if (line && line->numElements >= 2)
1772	is not NULL) which is not marked as skip */	fprintf(out, "%sdefault%s%s\n", indent,
1773	struct singleEntry * findEntryByPath(struct grubConfig * config,	separator, line->elements[1].item);
1774	const char * kernel, const char * prefix,	else if (line && (line->numElements == 1)
1775	int * index) {	&& cfg->cfi->titleBracketed) {
1776	struct singleEntry * entry = NULL;	char *title = extractTitle(cfg, line);
1777	struct singleLine * line;	if (title) {
1778	int i;	fprintf(out, "%sdefault%s%s\n", indent,
1779	char * chptr;	separator, title);
1780	char * rootspec = NULL;	free(title);
1781	enum lineType_e checkType = LT_KERNEL;	}
1782		}
1783		}
1784		}
1785		}
1786
1787	if (isdigit(*kernel)) {	static int writeConfig(struct grubConfig *cfg, char *outName,
1788	int * indexVars = alloca(sizeof(*indexVars) * strlen(kernel));	const char *prefix)
1789		{
1790		FILE *out;
1791		struct singleLine *line;
1792		struct singleEntry *entry;
1793		char *tmpOutName;
1794		int needs = MAIN_DEFAULT;
1795		struct stat sb;
1796		int i;
1797		int rc = 0;
1798
1799		if (!strcmp(outName, "-")) {
1800		out = stdout;
1801		tmpOutName = NULL;
1802		} else {
1803		if (!lstat(outName, &sb) && S_ISLNK(sb.st_mode)) {
1804		char *buf;
1805		int len = 256;
1806		int rc;
1807
1808		/* most likely the symlink is relative, so change our
1809		directory to the dir of the symlink */
1810		char *dir = strdupa(outName);
1811		rc = chdir(dirname(dir));
1812		do {
1813		buf = alloca(len + 1);
1814		rc = readlink(basename(outName), buf, len);
1815		if (rc == len)
1816		len += 256;
1817		} while (rc == len);
1818
1819		if (rc < 0) {
1820		fprintf(stderr,
1821		_
1822		("grubby: error readlink link %s: %s\n"),
1823		outName, strerror(errno));
1824		return 1;
1825		}
1826
1827	i = 0;	outName = buf;
1828	indexVars[i] = strtol(kernel, &chptr, 10);	outName[rc] = '\0';
1829	while (*chptr == ',') {	}
	i++;
	kernel = chptr + 1;
	indexVars[i] = strtol(kernel, &chptr, 10);
	}
1830
1831	if (*chptr) {	tmpOutName = alloca(strlen(outName) + 2);
1832	/* can't parse it, bail */	sprintf(tmpOutName, "%s-", outName);
1833	return NULL;	out = fopen(tmpOutName, "w");
1834	}	if (!out) {
1835		fprintf(stderr, _("grubby: error creating %s: %s\n"),
1836		tmpOutName, strerror(errno));
1837		return 1;
1838		}
1839
1840	indexVars[i + 1] = -1;	if (!stat(outName, &sb)) {
1841		if (chmod(tmpOutName, sb.st_mode & ~(S_IFMT))) {
1842	i = 0;	fprintf(stderr,
1843	if (index) {	_
1844	while (i < *index) i++;	("grubby: error setting perms on %s: %s\n"),
1845	if (indexVars[i] == -1) return NULL;	tmpOutName, strerror(errno));
1846		fclose(out);
1847		unlink(tmpOutName);
1848		return 1;
1849		}
1850		}
1851	}	}
1852
1853	entry = findEntryByIndex(config, indexVars[i]);	line = cfg->theLines;
1854	if (!entry) return NULL;	struct keywordTypes *defaultKw = getKeywordByType(LT_DEFAULT, cfg->cfi);
1855		while (line) {
1856	line = getLineByType(LT_KERNEL|LT_HYPER, entry->lines);	if (line->type == LT_SET_VARIABLE && defaultKw &&
1857	if (!line) return NULL;	line->numElements == 3 &&
1858		!strcmp(line->elements[1].item, defaultKw->key) &&
1859		!is_special_grub2_variable(line->elements[2].item)) {
1860		writeDefault(out, line->indent,
1861		line->elements[0].indent, cfg);
1862		needs &= ~MAIN_DEFAULT;
1863		} else if (line->type == LT_DEFAULT) {
1864		writeDefault(out, line->indent,
1865		line->elements[0].indent, cfg);
1866		needs &= ~MAIN_DEFAULT;
1867		} else if (line->type == LT_FALLBACK) {
1868		if (cfg->fallbackImage > -1)
1869		fprintf(out, "%s%s%s%d\n", line->indent,
1870		line->elements[0].item,
1871		line->elements[0].indent,
1872		cfg->fallbackImage);
1873		} else {
1874		if (lineWrite(out, line, cfg->cfi) == -1) {
1875		fprintf(stderr,
1876		_("grubby: error writing %s: %s\n"),
1877		tmpOutName, strerror(errno));
1878		fclose(out);
1879		unlink(tmpOutName);
1880		return 1;
1881		}
1882		}
1883
1884	if (index) *index = indexVars[i];	line = line->next;
	return 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;
1885	}	}
	} else if (!strcmp(kernel, "ALL")) {
	if (index)
	i = *index;
	else
	i = 0;
1886
1887	while ((entry = findEntryByIndex(config, i))) {	if (needs & MAIN_DEFAULT) {
1888	if (!entry->skip) break;	writeDefault(out, cfg->primaryIndent, "=", cfg);
1889	i++;	needs &= ~MAIN_DEFAULT;
1890	}	}
1891
1892	if (entry && index)	i = 0;
1893	*index = i;	while ((entry = findEntryByIndex(cfg, i++))) {
1894	} else {	if (entry->skip)
1895	if (index)	continue;
1896	i = *index;
1897	else	line = entry->lines;
1898	i = 0;	while (line) {
1899		if (lineWrite(out, line, cfg->cfi) == -1) {
1900	if (!strncmp(kernel, "TITLE=", 6)) {	fprintf(stderr,
1901	prefix = "";	_("grubby: error writing %s: %s\n"),
1902	checkType = LT_TITLE;	tmpOutName, strerror(errno));
1903	kernel += 6;	fclose(out);
1904		unlink(tmpOutName);
1905		return 1;
1906		}
1907		line = line->next;
1908		}
1909	}	}
1910
1911	for (entry = findEntryByIndex(config, i); entry; entry = entry->next, i++) {	if (tmpOutName) {
1912	if (entry->skip) continue;	/* write userspace buffers */
1913		if (fflush(out))
1914	dbgPrintf("findEntryByPath looking for %d %s in %p\n", checkType, kernel, entry);	rc = 1;
1915
1916		/* purge the write-back cache with fsync() */
1917		if (fsync(fileno(out)))
1918		rc = 1;
1919
1920		if (fclose(out))
1921		rc = 1;
1922
1923		if (rc == 0 && rename(tmpOutName, outName)) {
1924		unlink(tmpOutName);
1925		rc = 1;
1926		}
1927
1928	/* check all the lines matching checkType */	/* fsync() the destination directory after rename */
1929	for (line = entry->lines; line; line = line->next) {	if (rc == 0) {
1930	line = getLineByType(entry->multiboot && checkType == LT_KERNEL ?	int dirfd;
1931	LT_KERNEL|LT_MBMODULE|LT_HYPER :
1932	checkType, line);	dirfd = open(dirname(strdupa(outName)), O_RDONLY);
1933	if (!line) break;  /* not found in this entry */	if (dirfd < 0)
1934		rc = 1;
1935		else if (fsync(dirfd))
1936		rc = 1;
1937
1938	if (line && line->numElements >= 2) {	if (dirfd >= 0)
1939	rootspec = getRootSpecifier(line->elements[1].item);	close(dirfd);
	if (!strcmp(line->elements[1].item +
	((rootspec != NULL) ? strlen(rootspec) : 0),
	kernel + strlen(prefix)))
	break;
1940	}	}
	}
1941
1942	/* make sure this entry has a kernel identifier; this skips	if (rc == 1)
1943	* non-Linux boot entries (could find netbsd etc, though, which is	fprintf(stderr,
1944	* unfortunate)	_("grubby: error flushing data: %m\n"));
	*/
	if (line && getLineByType(LT_KERNEL|LT_HYPER, entry->lines))
	break; /* found 'im! */
1945	}	}
1946
1947	if (index) *index = i;	return rc;
	}
	return entry;
1948	}	}
1949
1950	struct singleEntry * findEntryByIndex(struct grubConfig * cfg, int index) {	static int numEntries(struct grubConfig *cfg)
1951	struct singleEntry * entry;	{
1952		int i = 0;
1953	entry = cfg->entries;	struct singleEntry *entry;
	while (index && entry) {
	entry = entry->next;
	index--;
	}
1954
1955	return entry;	entry = cfg->entries;
1956		while (entry) {
1957		if (!entry->skip)
1958		i++;
1959		entry = entry->next;
1960		}
1961		return i;
1962	}	}
1963
1964	/* Find a good template to use for the new kernel. An entry is	static char *findDiskForRoot()
1965	* good if the kernel and mkinitrd exist (even if the entry	{
1966	* is going to be removed). Try and use the default entry, but	int fd;
1967	* if that doesn't work just take the first. If we can't find one,	char buf[65536];
1968	* bail. */	char *devname;
1969	struct singleEntry * findTemplate(struct grubConfig * cfg, const char * prefix,	char *chptr;
1970	int * indexPtr, int skipRemoved, int flags) {	int rc;
1971	struct singleEntry * entry, * entry2;
1972	int index;	if ((fd = open(_PATH_MOUNTED, O_RDONLY)) < 0) {
1973		fprintf(stderr, "grubby: failed to open %s: %s\n",
1974	if (cfg->defaultImage > -1) {	_PATH_MOUNTED, strerror(errno));
1975	entry = findEntryByIndex(cfg, cfg->defaultImage);	return NULL;
1976	if (entry && suitableImage(entry, prefix, skipRemoved, flags)) {	}
1977	if (indexPtr) *indexPtr = cfg->defaultImage;
1978	return entry;	rc = read(fd, buf, sizeof(buf) - 1);
1979		if (rc <= 0) {
1980		fprintf(stderr, "grubby: failed to read %s: %s\n",
1981		_PATH_MOUNTED, strerror(errno));
1982		close(fd);
1983		return NULL;
1984	}	}
1985	}	close(fd);
1986		buf[rc] = '\0';
1987	index = 0;	chptr = buf;
	while ((entry = findEntryByIndex(cfg, index))) {
	if (suitableImage(entry, prefix, skipRemoved, flags)) {
	int j;
	for (j = 0; j < index; j++) {
	entry2 = findEntryByIndex(cfg, j);
	if (entry2->skip) index--;
	}
	if (indexPtr) *indexPtr = index;
1988
1989	return entry;	char *foundanswer = NULL;
	}
1990
1991	index++;	while (chptr && chptr != buf + rc) {
1992	}	devname = chptr;
1993
1994	fprintf(stderr, _("grubby fatal error: unable to find a suitable template\n"));	/*
1995		* The first column of a mtab entry is the device, but if the
1996		* entry is a special device it won't start with /, so move
1997		* on to the next line.
1998		*/
1999		if (*devname != '/') {
2000		chptr = strchr(chptr, '\n');
2001		if (chptr)
2002		chptr++;
2003		continue;
2004		}
2005
2006	return NULL;	/* Seek to the next space */
2007	}	chptr = strchr(chptr, ' ');
2008		if (!chptr) {
2009		fprintf(stderr, "grubby: error parsing %s: %s\n",
2010		_PATH_MOUNTED, strerror(errno));
2011		return NULL;
2012		}
2013
2014	char * findBootPrefix(void) {	/*
2015	struct stat sb, sb2;	* The second column of a mtab entry is the mount point, we
2016		* are looking for '/' obviously.
2017		*/
2018		if (*(++chptr) == '/' && *(++chptr) == ' ') {
2019		/* remember the last / entry in mtab */
2020		foundanswer = devname;
2021		}
2022
2023	stat("/", &sb);	/* Next line */
2024	#ifdef __ia64__	chptr = strchr(chptr, '\n');
2025	stat("/boot/efi/EFI/redhat/", &sb2);	if (chptr)
2026	#else	chptr++;
2027	stat("/boot", &sb2);	}
	#endif
2028
2029	if (sb.st_dev == sb2.st_dev)	/* Return the last / entry found */
2030	return strdup("");	if (foundanswer) {
2031		chptr = strchr(foundanswer, ' ');
2032		*chptr = '\0';
2033		return strdup(foundanswer);
2034		}
2035
2036	#ifdef __ia64__	return NULL;
	return strdup("/boot/efi/EFI/redhat/");
	#else
	return strdup("/boot");
	#endif
2037	}	}
2038
2039	void markRemovedImage(struct grubConfig * cfg, const char * image,	void printEntry(struct singleEntry *entry, FILE * f)
2040	const char * prefix) {	{
2041	struct singleEntry * entry;	int i;
2042		struct singleLine *line;
	if (!image) return;
	while ((entry = findEntryByPath(cfg, image, prefix, NULL)))
	entry->skip = 1;
	}
	void setDefaultImage(struct grubConfig * config, int hasNew,
	const char * defaultKernelPath, int newIsDefault,
	const char * prefix, int flags) {
	struct singleEntry * entry, * entry2, * newDefault;
	int i, j;
	if (newIsDefault) {
	config->defaultImage = 0;
	return;
	} else if (defaultKernelPath) {
	i = 0;
	if (findEntryByPath(config, defaultKernelPath, prefix, &i)) {
	config->defaultImage = i;
	} else {
	config->defaultImage = -1;
	return;
	}
	}
	/* defaultImage now points to what we'd like to use, but before any order
	changes */
	if (config->defaultImage == DEFAULT_SAVED)
	/* 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;
2043
2044	if (entry && !entry->skip) {	for (line = entry->lines; line; line = line->next) {
2045	/* we can preserve the default */	log_message(f, "DBG: %s", line->indent);
2046	if (hasNew)	for (i = 0; i < line->numElements; i++) {
2047	config->defaultImage++;	/* Need to handle this, because we strip the quotes from
2048		* menuentry when read it. */
2049	/* count the number of entries erased before this one */	if (line->type == LT_MENUENTRY && i == 1) {
2050	for (j = 0; j < config->defaultImage; j++) {	if (!isquote(*line->elements[i].item))
2051	entry2 = findEntryByIndex(config, j);	log_message(f, "\'%s\'",
2052	if (entry2->skip) config->defaultImage--;	line->elements[i].item);
2053	}	else
2054	} else if (hasNew) {	log_message(f, "%s",
2055	config->defaultImage = 0;	line->elements[i].item);
2056	} else {	log_message(f, "%s", line->elements[i].indent);
	/* Either we just erased the default (or the default line was bad
	* to begin with) and didn't put a new one in. We'll use the first
	* valid image. */
	newDefault = findTemplate(config, prefix, &config->defaultImage, 1,
	flags);
	if (!newDefault)
	config->defaultImage = -1;
	}
	}
2057
2058	void setFallbackImage(struct grubConfig * config, int hasNew) {	continue;
2059	struct singleEntry * entry, * entry2;	}
	int j;
	if (config->fallbackImage == -1) return;
	entry = findEntryByIndex(config, config->fallbackImage);
	if (!entry || entry->skip) {
	config->fallbackImage = -1;
	return;
	}
2060
2061	if (hasNew)	log_message(f, "%s%s",
2062	config->fallbackImage++;	line->elements[i].item,
2063		line->elements[i].indent);
2064	/* count the number of entries erased before this one */	}
2065	for (j = 0; j < config->fallbackImage; j++) {	log_message(f, "\n");
2066	entry2 = findEntryByIndex(config, j);	}
	if (entry2->skip) config->fallbackImage--;
	}
2067	}	}
2068
2069	void displayEntry(struct singleEntry * entry, const char * prefix, int index) {	void notSuitablePrintf(struct singleEntry *entry, int okay, const char *fmt,
2070	struct singleLine * line;	...)
2071	char * root = NULL;	{
2072	int i;	static int once;
2073		va_list argp, argq;
	printf("index=%d\n", index);
	line = getLineByType(LT_KERNEL|LT_HYPER, entry->lines);
	if (!line) {
	printf("non linux entry\n");
	return;
	}
	printf("kernel=%s\n", line->elements[1].item);
2074
2075	if (line->numElements >= 3) {	va_start(argp, fmt);
	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);
	}
2076
2077	i++;	va_copy(argq, argp);
2078		if (!once) {
2079		log_time(NULL);
2080		log_message(NULL, "command line: %s\n", saved_command_line);
2081	}	}
2082	printf("\"\n");	log_message(NULL, "DBG: Image entry %s: ",
2083	} else {	okay ? "succeeded" : "failed");
2084	line = getLineByType(LT_KERNELARGS, entry->lines);	log_vmessage(NULL, fmt, argq);
	if (line) {
	char * s;
	printf("args=\"");
	i = 1;
	while (i < line->numElements) {
	if (!strncmp(line->elements[i].item, "root=", 5)) {
	root = line->elements[i].item + 5;
	} else {
	s = line->elements[i].item;
2085
2086	printf("%s%s", s, line->elements[i].indent);	printEntry(entry, NULL);
2087	}	va_end(argq);
2088
2089	i++;	if (!debug) {
2090	}	once = 1;
2091		va_end(argp);
2092		return;
2093		}
2094
2095	s = line->elements[i - 1].indent;	if (okay) {
2096	printf("\"\n");	va_end(argp);
2097		return;
2098	}	}
	}
2099
2100	if (!root) {	if (!once)
2101	line = getLineByType(LT_ROOT, entry->lines);	log_message(stderr, "DBG: command line: %s\n",
2102	if (line && line->numElements >= 2)	saved_command_line);
2103	root=line->elements[1].item;	once = 1;
2104	}	fprintf(stderr, "DBG: Image entry failed: ");
2105		vfprintf(stderr, fmt, argp);
2106		printEntry(entry, stderr);
2107		va_end(argp);
2108		}
2109
2110	if (root) {	#define beginswith(s, c) ((s) && (s)[0] == (c))
	char * s = alloca(strlen(root) + 1);
	strcpy(s, root);
	if (s[strlen(s) - 1] == '"')
	s[strlen(s) - 1] = '\0';
	/* make sure the root doesn't have a trailing " */
	printf("root=%s\n", s);
	}
2111
2112	line = getLineByType(LT_INITRD, entry->lines);	static int endswith(const char *s, char c)
2113		{
2114		int slen;
2115
2116	if (line && line->numElements >= 2) {	if (!s || !s[0])
2117	printf("initrd=%s", prefix);	return 0;
2118	for (i = 1; i < line->numElements; i++)	slen = strlen(s) - 1;
	printf("%s%s", line->elements[i].item, line->elements[i].indent);
	printf("\n");
	}
	}
2119
2120	int parseSysconfigGrub(int * lbaPtr, char ** bootPtr) {	return s[slen] == c;
2121	FILE * in;	}
	char buf[1024];
	char * chptr;
	char * start;
	char * param;
	in = fopen("/etc/conf.d/grub", "r");
	if (!in) return 1;
	if (lbaPtr) *lbaPtr = 0;
	if (bootPtr) *bootPtr = NULL;
	while (fgets(buf, sizeof(buf), in)) {
	start = buf;
	while (isspace(*start)) start++;
	if (*start == '#') continue;
	chptr = strchr(start, '=');
	if (!chptr) continue;
	chptr--;
	while (*chptr && isspace(*chptr)) chptr--;
	chptr++;
	*chptr = '\0';
	param = chptr + 1;
	while (*param && isspace(*param)) param++;
	if (*param == '=') {
	param++;
	while (*param && isspace(*param)) param++;
	}
	chptr = param;
	while (*chptr && !isspace(*chptr)) chptr++;
	*chptr = '\0';
	if (!strcmp(start, "forcelba") && !strcmp(param, "1") && lbaPtr)
	*lbaPtr = 1;
	else if (!strcmp(start, "boot") && bootPtr)
	*bootPtr = strdup(param);
	}
2122
2123	fclose(in);	typedef struct {
2124		const char *start;
2125		size_t      chars;
2126		} field;
2127
2128	return 0;	static int iscomma(int c)
2129		{
2130		return c == ',';
2131	}	}
2132
2133	void dumpSysconfigGrub(void) {	static int isequal(int c)
2134	char * boot;	{
2135	int lba;	return c == '=';
	if (!parseSysconfigGrub(&lba, &boot)) {
	if (lba) printf("lba\n");
	if (boot) printf("boot=%s\n", boot);
	}
2136	}	}
2137
2138	int displayInfo(struct grubConfig * config, char * kernel,	static field findField(const field *in, typeof(isspace) *isdelim, field *out)
2139	const char * prefix) {	{
2140	int i = 0;	field nxt = {};
2141	struct singleEntry * entry;	size_t off = 0;
	struct singleLine * line;
	entry = findEntryByPath(config, kernel, prefix, &i);
	if (!entry) {
	fprintf(stderr, _("grubby: kernel not found\n"));
	return 1;
	}
2142
2143	/* this is a horrible hack to support /etc/conf.d/grub; there must	while (off < in->chars && isdelim(in->start[off]))
2144	be a better way */	off++;
	if (config->cfi == &grubConfigType) {
	dumpSysconfigGrub();
	} else {
	line = getLineByType(LT_BOOT, config->theLines);
	if (line && line->numElements >= 1) {
	printf("boot=%s\n", line->elements[1].item);
	}
2145
2146	line = getLineByType(LT_LBA, config->theLines);	if (off == in->chars)
2147	if (line) printf("lba\n");	return nxt;
	}
2148
2149	displayEntry(entry, prefix, i);	out->start = &in->start[off];
2150		out->chars = 0;
2151
2152	i++;	while (off + out->chars < in->chars && !isdelim(out->start[out->chars]))
2153	while ((entry = findEntryByPath(config, kernel, prefix, &i))) {	out->chars++;
	displayEntry(entry, prefix, i);
	i++;
	}
2154
2155	return 0;	nxt.start = out->start + out->chars;
2156		nxt.chars = in->chars - off - out->chars;
2157		return nxt;
2158	}	}
2159
2160	struct singleLine * addLineTmpl(struct singleEntry * entry,	static int fieldEquals(const field *in, const char *str)
2161	struct singleLine * tmplLine,	{
2162	struct singleLine * prevLine,	return in->chars == strlen(str) &&
2163	const char * val,	strncmp(in->start, str, in->chars) == 0;
2164	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);
	}
	}
	}
	dbgPrintf("addLineTmpl(%s)\n", newLine->numElements ?
	newLine->elements[0].item : "");
2165
2166	if (!entry->lines) {	/* Parse /proc/mounts to determine the subvolume prefix. */
2167	/* first one on the list */	static size_t subvolPrefix(const char *str)
2168	entry->lines = newLine;	{
2169	} else if (prevLine) {	FILE *file = NULL;
2170	/* add after prevLine */	char *line = NULL;
2171	newLine->next = prevLine->next;	size_t prfx = 0;
2172	prevLine->next = newLine;	size_t size = 0;
	}
2173
2174	return newLine;	file = fopen(mounts, "r");
2175	}	if (!file)
2176		return 0;
2177
2178	/* val may be NULL */	for (ssize_t s; (s = getline(&line, &size, file)) >= 0; ) {
2179	struct singleLine *  addLine(struct singleEntry * entry,	field nxt = { line, s };
2180	struct configFileInfo * cfi,	field dev = {};
2181	enum lineType_e type, char * defaultIndent,	field path = {};
2182	const char * val) {	field type = {};
2183	struct singleLine * line, * prev;	field opts = {};
2184	struct keywordTypes * kw;	field opt = {};
	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 = "";
	}
	}
2185
2186	/* The last non-empty line gives us the indention to us and the line	nxt = findField(&nxt, isspace, &dev);
2187	to insert after. Note that comments are considered empty lines, which	if (!nxt.start)
2188	may not be ideal? If there are no lines or we are looking at the	continue;
	first line, we use defaultIndent (the first line is normally indented
	differently from the rest) */
	for (line = entry->lines, prev = NULL; line; line = line->next) {
	if (line->numElements) prev = line;
	/* fall back on the last line if prev isn't otherwise set */
	if (!line->next && !prev) prev = line;
	}
2189
2190	if (prev == entry->lines)	nxt = findField(&nxt, isspace, &path);
2191	tmpl.indent = defaultIndent ?: "";	if (!nxt.start)
2192	else	continue;
	tmpl.indent = prev->indent;
2193
2194	return addLineTmpl(entry, &tmpl, prev, val, cfi);	nxt = findField(&nxt, isspace, &type);
2195	}	if (!nxt.start)
2196		continue;
2197
2198	void removeLine(struct singleEntry * entry, struct singleLine * line) {	nxt = findField(&nxt, isspace, &opts);
2199	struct singleLine * prev;	if (!nxt.start)
2200	int i;	continue;
2201
2202	for (i = 0; i < line->numElements; i++) {	if (!fieldEquals(&type, "btrfs"))
2203	free(line->elements[i].item);	continue;
	free(line->elements[i].indent);
	}
	free(line->elements);
	free(line->indent);
2204
2205	if (line == entry->lines) {	/* We have found a btrfs mount point. */
	entry->lines = line->next;
	} else {
	prev = entry->lines;
	while (prev->next != line) prev = prev->next;
	prev->next = line->next;
	}
2206
2207	free(line);	nxt = opts;
2208	}	while ((nxt = findField(&nxt, iscomma, &opt)).start) {
2209		field key = {};
2210		field val = {};
2211
2212	static void insertElement(struct singleLine * line,	opt = findField(&opt, isequal, &key);
2213	const char * item, int insertHere,	if (!opt.start)
2214	struct configFileInfo * cfi)	continue;
	{
	struct keywordTypes * kw;
	char indent[2] = "";
2215
2216	/* sanity check */	opt = findField(&opt, isequal, &val);
2217	if (insertHere > line->numElements) {	if (!opt.start)
2218	dbgPrintf("insertElement() adjusting insertHere from %d to %d\n",	continue;
	insertHere, line->numElements);
	insertHere = line->numElements;
	}
2219
2220	line->elements = realloc(line->elements, (line->numElements + 1) *	if (!fieldEquals(&key, "subvol"))
2221	sizeof(*line->elements));	continue;
	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] = ' ';
	}
2222
2223	if (insertHere > 0 && line->elements[insertHere-1].indent[0] == '\0') {	/* We have found a btrfs subvolume mount point. */
	/* move the end-of-line forward */
	line->elements[insertHere].indent =
	line->elements[insertHere-1].indent;
	line->elements[insertHere-1].indent = strdup(indent);
	} else {
	line->elements[insertHere].indent = strdup(indent);
	}
2224
2225	line->numElements++;	if (strncmp(val.start, str, val.chars))
2226		continue;
2227
2228	dbgPrintf("insertElement(%s, '%s%s', %d)\n",	if (val.start[val.chars - 1] != '/' &&
2229	line->elements[0].item,	str[val.chars] != '/')
2230	line->elements[insertHere].item,	continue;
	line->elements[insertHere].indent,
	insertHere);
	}
2231
2232	static void removeElement(struct singleLine * line, int removeHere) {	/* The subvolume mount point matches our input. */
	int i;
2233
2234	/* sanity check */	if (prfx < val.chars)
2235	if (removeHere >= line->numElements) return;	prfx = val.chars;
2236		}
2237		}
2238
2239	dbgPrintf("removeElement(%s, %d:%s)\n", line->elements[0].item,	dbgPrintf("%s(): str: '%s', prfx: '%s'\n", __FUNCTION__, str, prfx);
	removeHere, line->elements[removeHere].item);
2240
2241	free(line->elements[removeHere].item);	fclose(file);
2242		free(line);
2243		return prfx;
2244		}
2245
2246	if (removeHere > 1) {	int suitableImage(struct singleEntry *entry, const char *bootPrefix,
2247	/* previous argument gets this argument's post-indentation */	int skipRemoved, int flags)
2248	free(line->elements[removeHere-1].indent);	{
2249	line->elements[removeHere-1].indent =	struct singleLine *line;
2250	line->elements[removeHere].indent;	char *fullName;
2251	} else {	int i;
2252	free(line->elements[removeHere].indent);	char *dev;
2253	}	size_t rs;
2254		char *rootdev;
2255
2256		if (skipRemoved && entry->skip) {
2257		notSuitablePrintf(entry, 0, "marked to skip\n");
2258		return 0;
2259		}
2260
2261		line =
2262		getLineByType(LT_KERNEL | LT_HYPER | LT_KERNEL_EFI | LT_KERNEL_16,
2263		entry->lines);
2264		if (!line) {
2265		notSuitablePrintf(entry, 0, "no line found\n");
2266		return 0;
2267		}
2268		if (line->numElements < 2) {
2269		notSuitablePrintf(entry, 0, "line has only %d elements\n",
2270		line->numElements);
2271		return 0;
2272		}
2273
2274	/* now collapse the array, but don't bother to realloc smaller */	if (flags & GRUBBY_BADIMAGE_OKAY) {
2275	for (i = removeHere; i < line->numElements - 1; i++)	notSuitablePrintf(entry, 1, "\n");
2276	line->elements[i] = line->elements[i + 1];	return 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;
	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;
2277	}	}
	}
2278
2279	if (!removeArgs) {	fullName = alloca(strlen(bootPrefix) +
2280	oldArgs = malloc(sizeof(*oldArgs));	strlen(line->elements[1].item) + 1);
2281	*oldArgs = NULL;	rs = getRootSpecifier(line->elements[1].item);
2282	} else {	int hasslash = endswith(bootPrefix, '/') ||
2283	if (poptParseArgvString(removeArgs, NULL, &oldArgs)) {	beginswith(line->elements[1].item + rs, '/');
2284	fprintf(stderr,	sprintf(fullName, "%s%s%s", bootPrefix, hasslash ? "" : "/",
2285	_("grubby: error separating arguments '%s'\n"), removeArgs);	line->elements[1].item + rs);
2286	free(newArgs);	if (access(fullName, R_OK)) {
2287	return 1;	notSuitablePrintf(entry, 0, "access to %s failed\n", fullName);
2288		return 0;
2289	}	}
2290	}	for (i = 2; i < line->numElements; i++)
2291		if (!strncasecmp(line->elements[i].item, "root=", 5))
2292		break;
2293		if (i < line->numElements) {
2294		dev = line->elements[i].item + 5;
2295		} else {
2296		/* look for a lilo style LT_ROOT line */
2297		line = getLineByType(LT_ROOT, entry->lines);
2298
2299		if (line && line->numElements >= 2) {
2300		dev = line->elements[1].item;
2301		} else {
2302		/* didn't succeed in finding a LT_ROOT, let's try
2303		* LT_KERNELARGS.  grub+multiboot uses LT_MBMODULE
2304		* for the args, so check that too.
2305		*/
2306		line =
2307		getLineByType(LT_KERNELARGS | LT_MBMODULE,
2308		entry->lines);
2309
2310		/* failed to find one */
2311		if (!line) {
2312		notSuitablePrintf(entry, 0, "no line found\n");
2313		return 0;
2314		}
2315
2316	useKernelArgs = (getKeywordByType(LT_KERNELARGS, cfg->cfi)	for (i = 1; i < line->numElements; i++)
2317	&& (!multibootArgs || cfg->cfi->mbConcatArgs));	if (!strncasecmp
2318		(line->elements[i].item, "root=", 5))
2319		break;
2320		if (i < line->numElements)
2321		dev = line->elements[i].item + 5;
2322		else {
2323		notSuitablePrintf(entry, 0,
2324		"no root= entry found\n");
2325		/* it failed too...  can't find root= */
2326		return 0;
2327		}
2328		}
2329		}
2330
2331	useRoot = (getKeywordByType(LT_ROOT, cfg->cfi)	dev = getpathbyspec(dev);
2332	&& !multibootArgs);	if (!getpathbyspec(dev)) {
2333		notSuitablePrintf(entry, 0, "can't find blkid entry for %s\n",
2334		dev);
2335		return 0;
2336		} else
2337		dev = getpathbyspec(dev);
2338
2339		rootdev = findDiskForRoot();
2340		if (!rootdev) {
2341		notSuitablePrintf(entry, 0, "can't find root device\n");
2342		return 0;
2343		}
2344
2345		if (!getuuidbydev(rootdev) || !getuuidbydev(dev)) {
2346		notSuitablePrintf(entry, 0,
2347		"uuid missing: rootdev %s, dev %s\n",
2348		getuuidbydev(rootdev), getuuidbydev(dev));
2349		free(rootdev);
2350		return 0;
2351		}
2352
2353		if (strcmp(getuuidbydev(rootdev), getuuidbydev(dev))) {
2354		notSuitablePrintf(entry, 0,
2355		"uuid mismatch: rootdev %s, dev %s\n",
2356		getuuidbydev(rootdev), getuuidbydev(dev));
2357		free(rootdev);
2358		return 0;
2359		}
2360
2361	for (; (entry = findEntryByPath(cfg, image, prefix, &index)); index++) {	free(rootdev);
2362		notSuitablePrintf(entry, 1, "\n");
2363
2364	if (multibootArgs && !entry->multiboot)	return 1;
2365	continue;	}
2366
2367	/* Determine where to put the args.  If this config supports	/* returns the first match on or after the one pointed to by index (if index
2368	* LT_KERNELARGS, use that.  Otherwise use	is not NULL) which is not marked as skip */
2369	* LT_HYPER/LT_KERNEL/LT_MBMODULE lines.	struct singleEntry *findEntryByPath(struct grubConfig *config,
2370	*/	const char *kernel, const char *prefix,
2371	if (useKernelArgs) {	int *index)
2372	line = getLineByType(LT_KERNELARGS, entry->lines);	{
2373	if (!line) {	struct singleEntry *entry = NULL;
2374	/* no LT_KERNELARGS, need to add it */	struct singleLine *line;
2375	line = addLine(entry, cfg->cfi, LT_KERNELARGS,	int i;
2376	cfg->secondaryIndent, NULL);	char *chptr;
2377	}	enum lineType_e checkType = LT_KERNEL;
2378	firstElement = 1;
2379		if (isdigit(*kernel)) {
2380	} else if (multibootArgs) {	int *indexVars = alloca(sizeof(*indexVars) * strlen(kernel));
2381	line = getLineByType(LT_HYPER, entry->lines);
2382	if (!line) {	i = 0;
2383	/* a multiboot entry without LT_HYPER? */	indexVars[i] = strtol(kernel, &chptr, 10);
2384	continue;	while (*chptr == ',') {
2385	}	i++;
2386	firstElement = 2;	kernel = chptr + 1;
2387		indexVars[i] = strtol(kernel, &chptr, 10);
2388	} else {	}
	line = getLineByType(LT_KERNEL|LT_MBMODULE, entry->lines);
	if (!line) {
	/* no LT_KERNEL or LT_MBMODULE in this entry? */
	continue;
	}
	firstElement = 2;
	}
2389
2390	/* handle the elilo case which does:	if (*chptr) {
2391	*   append="hypervisor args -- kernel args"	/* can't parse it, bail */
2392	*/	return NULL;
2393	if (entry->multiboot && cfg->cfi->mbConcatArgs) {	}
	/* this is a multiboot entry, make sure there's
	* -- on the args line
	*/
	for (i = firstElement; i < line->numElements; i++) {
	if (!strcmp(line->elements[i].item, "--"))
	break;
	}
	if (i == line->numElements) {
	/* assume all existing args are kernel args,
	* prepend -- to make it official
	*/
	insertElement(line, "--", firstElement, cfg->cfi);
	i = firstElement;
	}
	if (!multibootArgs) {
	/* kernel args start after the -- */
	firstElement = i + 1;
	}
	} else if (cfg->cfi->mbConcatArgs) {
	/* this is a non-multiboot entry, remove hyper args */
	for (i = firstElement; i < line->numElements; i++) {
	if (!strcmp(line->elements[i].item, "--"))
	break;
	}
	if (i < line->numElements) {
	/* remove args up to -- */
	while (strcmp(line->elements[firstElement].item, "--"))
	removeElement(line, firstElement);
	/* remove -- */
	removeElement(line, firstElement);
	}
	}
	usedElements = calloc(line->numElements, sizeof(*usedElements));
	for (k = 0, arg = newArgs; *arg; arg++, k++) {
	doreplace = 1;
	for (i = firstElement; i < line->numElements; i++) {
	if (multibootArgs && cfg->cfi->mbConcatArgs &&
	!strcmp(line->elements[i].item, "--"))
	{
	/* reached the end of hyper args, insert here */
	doreplace = 0;
	break;
	}
	if (usedElements[i])
	continue;
	if (!argMatch(line->elements[i].item, *arg)) {
	usedElements[i]=1;
	break;
	}
	}
2394
2395	if (i < line->numElements && doreplace) {	indexVars[i + 1] = -1;
	/* direct replacement */
	free(line->elements[i].item);
	line->elements[i].item = strdup(*arg);
2396
2397	} else if (useRoot && !strncmp(*arg, "root=/dev/", 10)) {	i = 0;
2398	/* root= replacement */	if (index) {
2399	rootLine = getLineByType(LT_ROOT, entry->lines);	while (i < *index) {
2400	if (rootLine) {	i++;
2401	free(rootLine->elements[1].item);	if (indexVars[i] == -1)
2402	rootLine->elements[1].item = strdup(*arg + 5);	return NULL;
2403		}
2404		}
2405
2406		entry = findEntryByIndex(config, indexVars[i]);
2407		if (!entry)
2408		return NULL;
2409
2410		line =
2411		getLineByType(LT_KERNEL | LT_HYPER | LT_KERNEL_EFI |
2412		LT_KERNEL_16, entry->lines);
2413		if (!line)
2414		return NULL;
2415
2416		if (index)
2417		*index = indexVars[i];
2418		return entry;
2419		}
2420
2421		if (!strcmp(kernel, "DEFAULT")) {
2422		if (index && *index > config->defaultImage) {
2423		entry = NULL;
2424	} else {	} else {
2425	rootLine = addLine(entry, cfg->cfi, LT_ROOT,	entry = findEntryByIndex(config, config->defaultImage);
2426	cfg->secondaryIndent, *arg + 5);	if (entry && entry->skip)
2427		entry = NULL;
2428		else if (index)
2429		*index = config->defaultImage;
2430		}
2431		} else if (!strcmp(kernel, "ALL")) {
2432		if (index)
2433		i = *index;
2434		else
2435		i = 0;
2436
2437		while ((entry = findEntryByIndex(config, i))) {
2438		if (!entry->skip)
2439		break;
2440		i++;
2441	}	}
	}
2442
2443	else {	if (entry && index)
2444	/* insert/append */	*index = i;
2445	insertElement(line, *arg, i, cfg->cfi);	} else {
2446	usedElements = realloc(usedElements, line->numElements *	if (index)
2447	sizeof(*usedElements));	i = *index;
2448	memmove(&usedElements[i + 1], &usedElements[i],	else
2449	line->numElements - i - 1);	i = 0;
2450	usedElements[i] = 1;
2451		if (!strncmp(kernel, "TITLE=", 6)) {
2452	/* if we updated a root= here even though there is a	prefix = "";
2453	LT_ROOT available we need to remove the LT_ROOT entry	checkType = LT_TITLE | LT_MENUENTRY;
2454	(this will happen if we switch from a device to a label) */	kernel += 6;
2455	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);
	}
	}
2456
2457	free(newArgs);	for (entry = findEntryByIndex(config, i); entry;
2458	free(oldArgs);	entry = entry->next, i++) {
2459		if (entry->skip)
2460		continue;
2461
2462		dbgPrintf("findEntryByPath looking for %d %s in %p\n",
2463		checkType, kernel, entry);
2464
2465		/* check all the lines matching checkType */
2466		for (line = entry->lines; line; line = line->next) {
2467		enum lineType_e ct = checkType;
2468		if (entry->multiboot && checkType == LT_KERNEL)
2469		ct = LT_KERNEL | LT_KERNEL_EFI |
2470		LT_MBMODULE | LT_HYPER |
2471		LT_KERNEL_16;
2472		else if (checkType & LT_KERNEL)
2473		ct = checkType | LT_KERNEL_EFI |
2474		LT_KERNEL_16;
2475		line = getLineByType(ct, line);
2476		if (!line)
2477		break; /* not found in this entry */
2478
2479		if (line && line->type != LT_MENUENTRY &&
2480		line->numElements >= 2) {
2481		if (!strcmp(line->elements[1].item +
2482		getRootSpecifier(
2483		line->elements[1].item),
2484		kernel + strlen(prefix)))
2485		break;
2486		}
2487		if (line->type == LT_MENUENTRY &&
2488		!strcmp(line->elements[1].item, kernel))
2489		break;
2490		}
2491
2492	return 0;	/* make sure this entry has a kernel identifier; this skips
2493	}	* non-Linux boot entries (could find netbsd etc, though, which is
2494		* unfortunate)
2495		*/
2496		if (line
2497		&& getLineByType(LT_KERNEL | LT_HYPER |
2498		LT_KERNEL_EFI | LT_KERNEL_16,
2499		entry->lines))
2500		break; /* found 'im! */
2501		}
2502
2503	int updateImage(struct grubConfig * cfg, const char * image,	if (index)
2504	const char * prefix, const char * addArgs,	*index = i;
2505	const char * removeArgs,	}
	const char * addMBArgs, const char * removeMBArgs) {
	int rc = 0;
	if (!image) return rc;
	/* update the main args first... */
	if (addArgs || removeArgs)
	rc = updateActualImage(cfg, image, prefix, addArgs, removeArgs, 0);
	if (rc) return rc;
	/* and now any multiboot args */
	if (addMBArgs || removeMBArgs)
	rc = updateActualImage(cfg, image, prefix, addMBArgs, removeMBArgs, 1);
	return rc;
	}
	int updateInitrd(struct grubConfig * cfg, const char * image,
	const char * prefix, const char * initrd) {
	struct singleEntry * entry;
	struct singleLine * line, * kernelLine;
	int index = 0;
	if (!image) return 0;
	for (; (entry = findEntryByPath(cfg, image, prefix, &index)); index++) {
	kernelLine = getLineByType(LT_KERNEL, entry->lines);
	if (!kernelLine) continue;
	line = getLineByType(LT_INITRD, entry->lines);
	if (line)
	removeLine(entry, line);
	if (prefix) {
	int prefixLen = strlen(prefix);
	if (!strncmp(initrd, prefix, prefixLen))
	initrd += prefixLen;
	}
	line = addLine(entry, cfg->cfi, LT_INITRD, kernelLine->indent, initrd);
	if (!line) return 1;
	break;
	}
2506
2507	return 0;	return entry;
2508	}	}
2509
2510	int checkDeviceBootloader(const char * device, const unsigned char * boot) {	struct singleEntry *findEntryByTitle(struct grubConfig *cfg, char *title,
2511	int fd;	int *index)
2512	unsigned char bootSect[512];	{
2513	int offset;	struct singleEntry *entry;
2514		struct singleLine *line;
2515	fd = open(device, O_RDONLY);	int i;
2516	if (fd < 0) {	char *newtitle;
2517	fprintf(stderr, _("grubby: unable to open %s: %s\n"),
2518	device, strerror(errno));	for (i = 0, entry = cfg->entries; entry; entry = entry->next, i++) {
2519	return 1;	if (index && i < *index)
2520	}	continue;
2521		line = getLineByType(LT_TITLE, entry->lines);
2522	if (read(fd, bootSect, 512) != 512) {	if (!line)
2523	fprintf(stderr, _("grubby: unable to read %s: %s\n"),	line = getLineByType(LT_MENUENTRY, entry->lines);
2524	device, strerror(errno));	if (!line)
2525	return 1;	continue;
2526	}	newtitle = grub2ExtractTitle(line);
2527	close(fd);	if (!newtitle)
2528		continue;
2529		if (!strcmp(title, newtitle))
2530		break;
2531		}
2532
2533	/* first three bytes should match, a jmp short should be in there */	if (!entry)
2534	if (memcmp(boot, bootSect, 3))	return NULL;
	return 0;
2535
2536	if (boot[1] == 0xeb) {	if (index)
2537	offset = boot[2] + 2;	*index = i;
2538	} else if (boot[1] == 0xe8 || boot[1] == 0xe9) {	return entry;
2539	offset = (boot[3] << 8) + boot[2] + 2;	}
	} 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;
	}
2540
2541	if (memcmp(boot + offset, bootSect + offset, CODE_SEG_SIZE))	struct singleEntry *findEntryByIndex(struct grubConfig *cfg, int index)
2542	return 0;	{
2543		struct singleEntry *entry;
2544
2545	return 2;	entry = cfg->entries;
2546		while (index && entry) {
2547		entry = entry->next;
2548		index--;
2549		}
2550
2551		return entry;
2552	}	}
2553
2554	int checkLiloOnRaid(char * mdDev, const unsigned char * boot) {	/* Find a good template to use for the new kernel. An entry is
2555	int fd;	* good if the kernel and mkinitrd exist (even if the entry
2556	char buf[65536];	* is going to be removed). Try and use the default entry, but
2557	char * end;	* if that doesn't work just take the first. If we can't find one,
2558	char * chptr;	* bail. */
2559	char * chptr2;	struct singleEntry *findTemplate(struct grubConfig *cfg, const char *prefix,
2560	int rc;	int *indexPtr, int skipRemoved, int flags)
2561		{
2562		struct singleEntry *entry, *entry2;
2563		int index;
2564
2565	/* it's on raid; we need to parse /proc/mdstat and check all of the	if (cfg->cfi->defaultIsSaved) {
2566	*raw* devices listed in there */	if (cfg->cfi->getEnv) {
2567		char *defTitle =
2568		cfg->cfi->getEnv(cfg->cfi, "saved_entry");
2569		if (defTitle) {
2570		int index = 0;
2571		if (isnumber(defTitle)) {
2572		index = atoi(defTitle);
2573		entry = findEntryByIndex(cfg, index);
2574		} else {
2575		entry =
2576		findEntryByTitle(cfg, defTitle,
2577		&index);
2578		}
2579		if (entry
2580		&& suitableImage(entry, prefix, skipRemoved,
2581		flags)) {
2582		cfg->defaultImage = index;
2583		if (indexPtr)
2584		*indexPtr = index;
2585		return entry;
2586		}
2587		}
2588		}
2589		} else if (cfg->defaultImage >= FIRST_ENTRY_INDEX) {
2590		entry = findEntryByIndex(cfg, cfg->defaultImage);
2591		if (entry && suitableImage(entry, prefix, skipRemoved, flags)) {
2592		if (indexPtr)
2593		*indexPtr = cfg->defaultImage;
2594		return entry;
2595		}
2596		}
2597
2598	if (!strncmp(mdDev, "/dev/", 5))	index = 0;
2599	mdDev += 5;	while ((entry = findEntryByIndex(cfg, index))) {
2600		if (suitableImage(entry, prefix, skipRemoved, flags)) {
2601		int j, unmodifiedIndex;
2602
2603		unmodifiedIndex = index;
2604
2605		for (j = 0; j < unmodifiedIndex; j++) {
2606		entry2 = findEntryByIndex(cfg, j);
2607		if (entry2->skip)
2608		index--;
2609		}
2610		if (indexPtr)
2611		*indexPtr = index;
2612
2613	if ((fd = open("/proc/mdstat", O_RDONLY)) < 0) {	return entry;
2614	fprintf(stderr, _("grubby: failed to open /proc/mdstat: %s\n"),	}
	strerror(errno));
	return 2;
	}
2615
2616	rc = read(fd, buf, sizeof(buf) - 1);	index++;
2617	if (rc < 0 || rc == (sizeof(buf) - 1)) {	}
	fprintf(stderr, _("grubby: failed to read /proc/mdstat: %s\n"),
	strerror(errno));
	close(fd);
	return 2;
	}
	close(fd);
	buf[rc] = '\0';
2618
2619	chptr = buf;	fprintf(stderr,
2620	while (*chptr) {	_("grubby fatal error: unable to find a suitable template\n"));
	end = strchr(chptr, '\n');
	if (!end) break;
	*end = '\0';
2621
2622	if (!strncmp(chptr, mdDev, strlen(mdDev)) &&	return NULL;
2623	chptr[strlen(mdDev)] == ' ') {	}
2624
2625	/* found the device */	char *findBootPrefix(void)
2626	while (*chptr && *chptr != ':') chptr++;	{
2627	chptr++;	struct stat sb, sb2;
	while (*chptr && isspace(*chptr)) chptr++;
	/* skip the "active" bit */
	while (*chptr && !isspace(*chptr)) chptr++;
	while (*chptr && isspace(*chptr)) chptr++;
	/* skip the raid level */
	while (*chptr && !isspace(*chptr)) chptr++;
	while (*chptr && isspace(*chptr)) chptr++;
	/* everything else is partition stuff */
	while (*chptr) {
	chptr2 = chptr;
	while (*chptr2 && *chptr2 != '[') chptr2++;
	if (!*chptr2) break;
	/* yank off the numbers at the end */
	chptr2--;
	while (isdigit(*chptr2) && chptr2 > chptr) chptr2--;
	chptr2++;
	*chptr2 = '\0';
	/* Better, now we need the /dev/ back. We're done with
	* everything before this point, so we can just put
	* the /dev/ part there. There will always be room. */
	memcpy(chptr - 5, "/dev/", 5);
	rc = checkDeviceBootloader(chptr - 5, boot);
	if (rc != 2) {
	return rc;
	}
	chptr = chptr2 + 1;
	/* skip the [11] bit */
	while (*chptr && !isspace(*chptr)) chptr++;
	/* and move to the next one */
	while (*chptr && isspace(*chptr)) chptr++;
	}
2628
2629	/*  we're good to go */	stat("/", &sb);
2630	return 2;	#ifdef __ia64__
2631	}	stat("/boot/efi/EFI/redhat/", &sb2);
2632		#else
2633		stat("/boot", &sb2);
2634		#endif
2635
2636	chptr = end + 1;	if (sb.st_dev == sb2.st_dev)
2637	}	return strdup("");
2638
2639	fprintf(stderr,	#ifdef __ia64__
2640	_("grubby: raid device /dev/%s not found in /proc/mdstat\n"),	return strdup("/boot/efi/EFI/redhat/");
2641	mdDev);	#else
2642	return 0;	return strdup("/boot");
2643		#endif
2644	}	}
2645
2646	int checkForLilo(struct grubConfig * config) {	void markRemovedImage(struct grubConfig *cfg, const char *image,
2647	int fd;	const char *prefix)
2648	unsigned char boot[512];	{
2649	struct singleLine * line;	struct singleEntry *entry;
	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;
	}
2650
2651	if (line->numElements != 2) return 1;	if (!image)
2652		return;
2653
2654	fd = open("/boot/boot.b", O_RDONLY);	/* check and see if we're removing the default image */
2655	if (fd < 0) {	if (isdigit(*image)) {
2656	fprintf(stderr, _("grubby: unable to open %s: %s\n"),	entry = findEntryByPath(cfg, image, prefix, NULL);
2657	"/boot/boot.b", strerror(errno));	if (entry)
2658	return 1;	entry->skip = 1;
2659	}	return;
2660		}
2661
2662	if (read(fd, boot, 512) != 512) {	while ((entry = findEntryByPath(cfg, image, prefix, NULL)))
2663	fprintf(stderr, _("grubby: unable to read %s: %s\n"),	entry->skip = 1;
2664	"/boot/boot.b", strerror(errno));	}
	return 1;
	}
	close(fd);
2665
2666	if (!strncmp("/dev/md", line->elements[1].item, 7))	void setDefaultImage(struct grubConfig *config, int isAddingBootEntry,
2667	return checkLiloOnRaid(line->elements[1].item, boot);	const char *defaultKernelPath, int newBootEntryIsDefault,
2668		const char *prefix, int flags,
2669		int newDefaultBootEntryIndex, int newBootEntryIndex)
2670		{
2671		struct singleEntry *bootEntry, *newDefault;
2672		int indexToVerify, firstKernelEntryIndex, currentLookupIndex;
2673
2674	return checkDeviceBootloader(line->elements[1].item, boot);	/* initialize */
2675	}	currentLookupIndex = FIRST_ENTRY_INDEX;
2676
2677	int checkForGrub(struct grubConfig * config) {	/* handle the two cases where the user explictly picks the default
2678	int fd;	* boot entry index as it would exist post-modification */
	unsigned char bootSect[512];
	char * boot;
2679
2680	if (parseSysconfigGrub(NULL, &boot))	/* Case 1: user chose to make the latest boot entry the default */
2681	return 0;	if (newBootEntryIsDefault) {
2682		config->defaultImage = newBootEntryIndex;
2683		return;
2684		}
2685
2686	/* assume grub is not installed -- not an error condition */	/* Case 2: user picked an arbitrary index as the default boot entry */
2687	if (!boot)	if (newDefaultBootEntryIndex >= FIRST_ENTRY_INDEX) {
2688	return 0;	indexToVerify = newDefaultBootEntryIndex;
2689
2690	fd = open("/boot/grub/stage1", O_RDONLY);	/* user chose to make latest boot entry the default */
2691	if (fd < 0)	if (newDefaultBootEntryIndex == newBootEntryIndex) {
2692	/* this doesn't exist if grub hasn't been installed */	config->defaultImage = newBootEntryIndex;
2693	return 0;	return;
2694		}
2695
2696	if (read(fd, bootSect, 512) != 512) {	/* the user picks the default index based on the
2697	fprintf(stderr, _("grubby: unable to read %s: %s\n"),	* order of the bootloader configuration after
2698	"/boot/grub/stage1", strerror(errno));	* modification; ensure we are checking for the
2699	close(fd);	* existence of the correct entry */
2700	return 1;	if (newBootEntryIndex < newDefaultBootEntryIndex) {
2701	}	if (!config->isModified)
2702	close(fd);	indexToVerify--;
2703		}
2704
2705	return checkDeviceBootloader(boot, bootSect);	/* verify the user selected index will exist */
2706	}	if (findEntryByIndex(config, indexToVerify)) {
2707		config->defaultImage = newDefaultBootEntryIndex;
2708		} else {
2709		config->defaultImage = NO_DEFAULT_ENTRY;
2710		}
2711
2712	int checkForExtLinux(struct grubConfig * config) {	return;
2713	int fd;	}
	unsigned char bootSect[512];
	char * boot;
	char executable[] = "/boot/extlinux/extlinux";
2714
2715	printf("entered: checkForExtLinux()\n");	/* handle cases where the index value may shift */
2716
2717	if (parseSysconfigGrub(NULL, &boot))	/* check validity of existing default or first-entry-found
2718	return 0;	selection */
2719		if (defaultKernelPath) {
2720		/* we must initialize this */
2721		firstKernelEntryIndex = 0;
2722		/* user requested first-entry-found */
2723		if (!findEntryByPath(config, defaultKernelPath,
2724		prefix, &firstKernelEntryIndex)) {
2725		/* don't change default if can't find match */
2726		config->defaultImage = NO_DEFAULT_ENTRY;
2727		return;
2728		}
2729
2730	/* assume grub is not installed -- not an error condition */	config->defaultImage = firstKernelEntryIndex;
	if (!boot)
	return 0;
2731
2732	fd = open(executable, O_RDONLY);	/* this is where we start looking for decrement later */
2733	if (fd < 0)	currentLookupIndex = config->defaultImage;
	/* this doesn't exist if grub hasn't been installed */
	return 0;
2734
2735	if (read(fd, bootSect, 512) != 512) {	if (isAddingBootEntry && !config->isModified &&
2736	fprintf(stderr, _("grubby: unable to read %s: %s\n"),	(newBootEntryIndex < config->defaultImage)) {
2737	executable, strerror(errno));	/* increment because new entry added before default */
2738	return 1;	config->defaultImage++;
2739	}	}
2740	close(fd);	} else {
2741		/* check to see if the default is stored in the environment */
2742		if (config->defaultImage < FIRST_ENTRY_INDEX) {
2743		if (config->defaultImage == DEFAULT_SAVED || config->defaultImage == DEFAULT_SAVED_GRUB2)
2744		{
2745		if (config->cfi->defaultIsSaved) {
2746		if (config->cfi->getEnv) {
2747		char *defaultTitle = config->cfi->getEnv(config->cfi, "saved_entry");
2748
2749		if (defaultTitle) {
2750		if (isnumber(defaultTitle)) {
2751		currentLookupIndex = atoi(defaultTitle);
2752		} else {
2753		findEntryByTitle(config, defaultTitle, &currentLookupIndex);
2754		}
2755		/* set the default Image to an actual index */
2756		config->defaultImage = currentLookupIndex;
2757		}
2758		}
2759		}
2760		}
2761		} else {
2762		/* use pre-existing default entry from the file*/
2763		currentLookupIndex = config->defaultImage;
2764		}
2765
2766	return checkDeviceBootloader(boot, bootSect);	if (isAddingBootEntry
2767	}	&& (newBootEntryIndex <= config->defaultImage)) {
2768		config->defaultImage++;
2769
2770	static char * getRootSpecifier(char * str) {	if (config->isModified) {
2771	char * idx, * rootspec = NULL;	currentLookupIndex++;
2772		}
2773		}
2774		}
2775
2776	if (*str == '(') {	/* sanity check - is this entry index valid? */
2777	idx = rootspec = strdup(str);	bootEntry = findEntryByIndex(config, currentLookupIndex);
	while(*idx && (*idx != ')') && (!isspace(*idx))) idx++;
	*(++idx) = '\0';
	}
	return rootspec;
	}
2778
2779	static char * getInitrdVal(struct grubConfig * config,	if ((bootEntry && bootEntry->skip) || !bootEntry) {
2780	const char * prefix, struct singleLine *tmplLine,	/* entry is to be skipped or is invalid */
2781	const char * newKernelInitrd,	if (isAddingBootEntry) {
2782	char ** extraInitrds, int extraInitrdCount)	config->defaultImage = newBootEntryIndex;
2783	{	return;
2784	char *initrdVal, *end;	}
2785	int i;	newDefault =
2786	size_t totalSize;	findTemplate(config, prefix, &config->defaultImage, 1,
2787	size_t prefixLen;	flags);
2788	char separatorChar;	if (!newDefault) {
2789		config->defaultImage = NO_DEFAULT_ENTRY;
2790	prefixLen = strlen(prefix);	}
2791	totalSize = strlen(newKernelInitrd) - prefixLen + 1 /* \0 */;
2792		return;
2793	for (i = 0; i < extraInitrdCount; i++) {	}
2794	totalSize += sizeof(separatorChar);
2795	totalSize += strlen(extraInitrds[i]) - prefixLen;	currentLookupIndex--;
2796	}
2797		/* decrement index by the total number of entries deleted */
2798
2799		for (indexToVerify = currentLookupIndex;
2800		indexToVerify >= FIRST_ENTRY_INDEX; indexToVerify--) {
2801
2802	initrdVal = end = malloc(totalSize);	bootEntry = findEntryByIndex(config, indexToVerify);
2803
2804	end = stpcpy (end, newKernelInitrd + prefixLen);	if (bootEntry && bootEntry->skip) {
2805		config->defaultImage--;
2806		}
2807		}
2808		}
2809
2810	separatorChar = getKeywordByType(LT_INITRD, config->cfi)->separatorChar;	void setFallbackImage(struct grubConfig *config, int hasNew)
2811	for (i = 0; i < extraInitrdCount; i++) {	{
2812	const char *extraInitrd;	struct singleEntry *entry, *entry2;
2813	int j;	int j;
2814
2815	extraInitrd = extraInitrds[i] + prefixLen;	if (config->fallbackImage == -1)
2816	/* Don't add entries that are already there */	return;
	if (tmplLine != NULL) {
	for (j = 2; j < tmplLine->numElements; j++)
	if (strcmp(extraInitrd, tmplLine->elements[j].item) == 0)
	break;
2817
2818	if (j != tmplLine->numElements)	entry = findEntryByIndex(config, config->fallbackImage);
2819	continue;	if (!entry || entry->skip) {
2820		config->fallbackImage = -1;
2821		return;
2822	}	}
2823
2824	*end++ = separatorChar;	if (hasNew)
2825	end = stpcpy(end, extraInitrd);	config->fallbackImage++;
	}
2826
2827	return initrdVal;	/* count the number of entries erased before this one */
2828		for (j = 0; j < config->fallbackImage; j++) {
2829		entry2 = findEntryByIndex(config, j);
2830		if (entry2->skip)
2831		config->fallbackImage--;
2832		}
2833	}	}
2834
2835	int addNewKernel(struct grubConfig * config, struct singleEntry * template,	void displayEntry(struct grubConfig *config, struct singleEntry *entry, const char *prefix, int index)
2836	const char * prefix,	{
2837	char * newKernelPath, char * newKernelTitle,	struct singleLine *line;
2838	char * newKernelArgs, char * newKernelInitrd,	char *root = NULL;
2839	char ** extraInitrds, int extraInitrdCount,	int i;
2840	char * newMBKernel, char * newMBKernelArgs) {	int j;
2841	struct singleEntry * new;
2842	struct singleLine * newLine = NULL, * tmplLine = NULL, * masterLine = NULL;	printf("index=%d\n", index);
	int needs;
	char * chptr;
	if (!newKernelPath) return 0;
	/* if the newKernelTitle is too long silently munge it into something
	* we can live with. truncating is first check, then we'll just mess with
	* it until it looks better */
	if (config->cfi->maxTitleLength &&
	(strlen(newKernelTitle) > config->cfi->maxTitleLength)) {
	char * buf = alloca(config->cfi->maxTitleLength + 7);
	char * numBuf = alloca(config->cfi->maxTitleLength + 1);
	int i = 1;
2843
2844	sprintf(buf, "TITLE=%.*s", config->cfi->maxTitleLength, newKernelTitle);	line =
2845	while (findEntryByPath(config, buf, NULL, NULL)) {	getLineByType(LT_KERNEL | LT_HYPER | LT_KERNEL_EFI | LT_KERNEL_16,
2846	sprintf(numBuf, "%d", i++);	entry->lines);
2847	strcpy(buf + strlen(buf) - strlen(numBuf), numBuf);	if (!line) {
2848		printf("non linux entry\n");
2849		return;
2850	}	}
2851
2852	newKernelTitle = buf + 6;	if (!strncmp(prefix, line->elements[1].item, strlen(prefix)))
2853	}	printf("kernel=%s\n", line->elements[1].item);
2854		else
2855		printf("kernel=%s%s\n", prefix, line->elements[1].item);
2856
2857	new = malloc(sizeof(*new));	if (line->numElements >= 3) {
2858	new->skip = 0;	printf("args=\"");
2859	new->multiboot = 0;	i = 2;
2860	new->next = config->entries;	while (i < line->numElements) {
2861	new->lines = NULL;	if (!strncmp(line->elements[i].item, "root=", 5)) {
2862	config->entries = new;	root = line->elements[i].item + 5;
2863		} else {
2864	/* copy/update from the template */	printf("%s%s", line->elements[i].item,
2865	needs = NEED_KERNEL | NEED_TITLE;	line->elements[i].indent);
2866	if (newKernelInitrd)	}
	needs |= NEED_INITRD;
	if (newMBKernel) {
	needs |= NEED_MB;
	new->multiboot = 1;
	}
2867
2868	if (template) {	i++;
	for (masterLine = template->lines;
	masterLine && (tmplLine = lineDup(masterLine));
	lineFree(tmplLine), masterLine = masterLine->next)
	{
	dbgPrintf("addNewKernel processing %d\n", tmplLine->type);
	/* skip comments */
	chptr = tmplLine->indent;
	while (*chptr && isspace(*chptr)) chptr++;
	if (*chptr == '#') continue;
	if (tmplLine->type == LT_KERNEL &&
	tmplLine->numElements >= 2) {
	if (!template->multiboot && (needs & NEED_MB)) {
	/* it's not a multiboot template and this is the kernel
	* line.  Try to be intelligent about inserting the
	* hypervisor at the same time.
	*/
	if (config->cfi->mbHyperFirst) {
	/* insert the hypervisor first */
	newLine = addLine(new, config->cfi, LT_HYPER,
	tmplLine->indent,
	newMBKernel + strlen(prefix));
	/* set up for adding the kernel line */
	free(tmplLine->indent);
	tmplLine->indent = strdup(config->secondaryIndent);
	needs &= ~NEED_MB;
	}
	if (needs & NEED_KERNEL) {
	/* use addLineTmpl to preserve line elements,
	* otherwise we could just call addLine.  Unfortunately
	* this means making some changes to the template
	* such as the indent change above and the type
	* change below.
	*/
	struct keywordTypes * mbm_kw =
	getKeywordByType(LT_MBMODULE, config->cfi);
	if (mbm_kw) {
	tmplLine->type = LT_MBMODULE;
	free(tmplLine->elements[0].item);
	tmplLine->elements[0].item = strdup(mbm_kw->key);
	}
	newLine = addLineTmpl(new, tmplLine, newLine,
	newKernelPath + strlen(prefix), config->cfi);
	needs &= ~NEED_KERNEL;
	}
	if (needs & NEED_MB) { /* !mbHyperFirst */
	newLine = addLine(new, config->cfi, LT_HYPER,
	config->secondaryIndent,
	newMBKernel + strlen(prefix));
	needs &= ~NEED_MB;
	}
	} else if (needs & NEED_KERNEL) {
	newLine = addLineTmpl(new, tmplLine, newLine,
	newKernelPath + strlen(prefix), config->cfi);
	needs &= ~NEED_KERNEL;
	}
	} else if (tmplLine->type == LT_HYPER &&
	tmplLine->numElements >= 2) {
	if (needs & NEED_MB) {
	newLine = addLineTmpl(new, tmplLine, newLine,
	newMBKernel + strlen(prefix), config->cfi);
	needs &= ~NEED_MB;
	}
	} else if (tmplLine->type == LT_MBMODULE &&
	tmplLine->numElements >= 2) {
	if (new->multiboot) {
	if (needs & NEED_KERNEL) {
	newLine = addLineTmpl(new, tmplLine, newLine,
	newKernelPath +
	strlen(prefix), config->cfi);
	needs &= ~NEED_KERNEL;
	} else if (config->cfi->mbInitRdIsModule &&
	(needs & NEED_INITRD)) {
	char *initrdVal;
	initrdVal = getInitrdVal(config, prefix, tmplLine,
	newKernelInitrd, extraInitrds,
	extraInitrdCount);
	newLine = addLineTmpl(new, tmplLine, newLine,
	initrdVal, config->cfi);
	free(initrdVal);
	needs &= ~NEED_INITRD;
	}
	} else if (needs & NEED_KERNEL) {
	/* template is multi but new is not,
	* insert the kernel in the first module slot
	*/
	tmplLine->type = LT_KERNEL;
	free(tmplLine->elements[0].item);
	tmplLine->elements[0].item =
	strdup(getKeywordByType(LT_KERNEL, config->cfi)->key);
	newLine = addLineTmpl(new, tmplLine, newLine,
	newKernelPath + strlen(prefix), config->cfi);
	needs &= ~NEED_KERNEL;
	} else if (needs & NEED_INITRD) {
	char *initrdVal;
	/* template is multi but new is not,
	* insert the initrd in the second module slot
	*/
	tmplLine->type = LT_INITRD;
	free(tmplLine->elements[0].item);
	tmplLine->elements[0].item =
	strdup(getKeywordByType(LT_INITRD, config->cfi)->key);
	initrdVal = getInitrdVal(config, prefix, tmplLine, newKernelInitrd, extraInitrds, extraInitrdCount);
	newLine = addLineTmpl(new, tmplLine, newLine, initrdVal, config->cfi);
	free(initrdVal);
	needs &= ~NEED_INITRD;
	}
	} else if (tmplLine->type == LT_INITRD &&
	tmplLine->numElements >= 2) {
	if (needs & NEED_INITRD &&
	new->multiboot && !template->multiboot &&
	config->cfi->mbInitRdIsModule) {
	/* make sure we don't insert the module initrd
	* before the module kernel... if we don't do it here,
	* it will be inserted following the template.
	*/
	if (!needs & NEED_KERNEL) {
	char *initrdVal;
	initrdVal = getInitrdVal(config, prefix, tmplLine, newKernelInitrd, extraInitrds, extraInitrdCount);
	newLine = addLine(new, config->cfi, LT_MBMODULE,
	config->secondaryIndent,
	initrdVal);
	free(initrdVal);
	needs &= ~NEED_INITRD;
	}
	} else if (needs & NEED_INITRD) {
	char *initrdVal;
	initrdVal = getInitrdVal(config, prefix, tmplLine, newKernelInitrd, extraInitrds, extraInitrdCount);
	newLine = addLineTmpl(new, tmplLine, newLine, initrdVal, config->cfi);
	free(initrdVal);
	needs &= ~NEED_INITRD;
	}
	} else if (tmplLine->type == LT_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->entryStart) {
	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;
2869	}	}
2870		printf("\"\n");
2871		} else {
2872		line = getLineByType(LT_KERNELARGS, entry->lines);
2873		if (line) {
2874		char *s;
2875
2876		printf("args=\"");
2877		i = 1;
2878		while (i < line->numElements) {
2879		if (!strncmp
2880		(line->elements[i].item, "root=", 5)) {
2881		root = line->elements[i].item + 5;
2882		} else {
2883		s = line->elements[i].item;
2884
2885	case LT_HYPER:	printf("%s%s", s,
2886	newLine = addLine(new, config->cfi, LT_HYPER,	line->elements[i].indent);
	config->primaryIndent,
	newMBKernel + strlen(prefix));
	needs &= ~NEED_MB;
	break;
	case LT_TITLE:
	if( useextlinuxmenu != 0 ){ // We just need useextlinuxmenu to not be zero (set above)
	char * templabel;
	int x = 0, y = 0;
	templabel = strdup(newKernelTitle);
	while( templabel[x]){
	if( templabel[x] == ' ' ){
	y = x;
	while( templabel[y] ){
	templabel[y] = templabel[y+1];
	y++;
	}
2887	}	}
2888	x++;
2889		i++;
2890	}	}
2891	newLine = addLine(new, config->cfi, LT_TITLE,
2892	config->primaryIndent, templabel);	s = line->elements[i - 1].indent;
2893	free(templabel);	printf("\"\n");
	}else{
	newLine = addLine(new, config->cfi, LT_TITLE,
	config->primaryIndent, newKernelTitle);
2894	}	}
2895	needs &= ~NEED_TITLE;	}
	break;
2896
2897	default:	if (!root) {
2898	abort();	line = getLineByType(LT_ROOT, entry->lines);
2899		if (line && line->numElements >= 2)
2900		root = line->elements[1].item;
2901	}	}
	}
2902
2903	/* add the remainder of the lines, i.e. those that either	if (root) {
2904	* weren't present in the template, or in the case of no template,	char *s = alloca(strlen(root) + 1);
	* all the lines following the entryStart.
	*/
	if (needs & NEED_TITLE) {
	newLine = addLine(new, config->cfi, LT_TITLE,
	config->secondaryIndent,
	newKernelTitle);
	needs &= ~NEED_TITLE;
	}
	if ((needs & NEED_MB) && config->cfi->mbHyperFirst) {
	newLine = addLine(new, config->cfi, LT_HYPER,
	config->secondaryIndent,
	newMBKernel + strlen(prefix));
	needs &= ~NEED_MB;
	}
	if (needs & NEED_KERNEL) {
	newLine = addLine(new, config->cfi,
	(new->multiboot && getKeywordByType(LT_MBMODULE,
	config->cfi)) ?
	LT_MBMODULE : LT_KERNEL,
	config->secondaryIndent,
	newKernelPath + strlen(prefix));
	needs &= ~NEED_KERNEL;
	}
	if (needs & NEED_MB) {
	newLine = addLine(new, config->cfi, LT_HYPER,
	config->secondaryIndent,
	newMBKernel + strlen(prefix));
	needs &= ~NEED_MB;
	}
	if (needs & NEED_INITRD) {
	char *initrdVal;
	initrdVal = getInitrdVal(config, prefix, NULL, newKernelInitrd, extraInitrds, extraInitrdCount);
	newLine = addLine(new, config->cfi,
	(new->multiboot && getKeywordByType(LT_MBMODULE,
	config->cfi)) ?
	LT_MBMODULE : LT_INITRD,
	config->secondaryIndent,
	initrdVal);
	free(initrdVal);
	needs &= ~NEED_INITRD;
	}
2905
2906	if (needs) {	strcpy(s, root);
2907	printf(_("grubby: needs=%d, aborting\n"), needs);	if (s[strlen(s) - 1] == '"')
2908	abort();	s[strlen(s) - 1] = '\0';
2909	}	/* make sure the root doesn't have a trailing " */
2910		printf("root=%s\n", s);
2911		}
2912
2913	if (updateImage(config, "0", prefix, newKernelArgs, NULL,	line =
2914	newMBKernelArgs, NULL)) return 1;	getLineByType(LT_INITRD | LT_INITRD_EFI | LT_INITRD_16,
2915		entry->lines);
2916
2917	return 0;	if (line && line->numElements >= 2) {
2918		if (!strncmp(prefix, line->elements[1].item, strlen(prefix)))
2919		printf("initrd=");
2920		else
2921		printf("initrd=%s", prefix);
2922
2923		for (i = 1; i < line->numElements; i++)
2924		printf("%s%s", line->elements[i].item,
2925		line->elements[i].indent);
2926		printf("\n");
2927		}
2928
2929		line = getLineByType(LT_TITLE, entry->lines);
2930		if (line) {
2931		char *entryTitle;
2932		/* if we can extractTitle, then it's a zipl config and
2933		* if not then we go ahead with what's existed prior */
2934		entryTitle = extractTitle(config, line);
2935		if (!entryTitle) {
2936		entryTitle=line->elements[1].item;
2937		}
2938		printf("title=%s\n", entryTitle);
2939		} else {
2940		char *title;
2941		line = getLineByType(LT_MENUENTRY, entry->lines);
2942		if (line) {
2943		title = grub2ExtractTitle(line);
2944		if (title)
2945		printf("title=%s\n", title);
2946		}
2947		}
2948
2949		for (j = 0, line = entry->lines; line; line = line->next) {
2950		if ((line->type & LT_MBMODULE) && line->numElements >= 2) {
2951		if (!strncmp
2952		(prefix, line->elements[1].item, strlen(prefix)))
2953		printf("mbmodule%d=", j);
2954		else
2955		printf("mbmodule%d=%s", j, prefix);
2956
2957		for (i = 1; i < line->numElements; i++)
2958		printf("%s%s", line->elements[i].item,
2959		line->elements[i].indent);
2960		printf("\n");
2961		j++;
2962		}
2963		}
2964	}	}
2965
2966	static void traceback(int signum)	int isSuseSystem(void)
2967	{	{
2968	void *array[40];	const char *path;
2969	size_t size;	const static char default_path[] = "/etc/SuSE-release";
2970
2971	signal(SIGSEGV, SIG_DFL);	if ((path = getenv("GRUBBY_SUSE_RELEASE")) == NULL)
2972	memset(array, '\0', sizeof (array));	path = default_path;
2973	size = backtrace(array, 40);
2974		if (!access(path, R_OK))
	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);
2975	return 1;	return 1;
2976	}	return 0;
2977	break;	}
2978
2979		int isSuseGrubConf(const char *path)
2980		{
2981		FILE *grubConf;
2982		char *line = NULL;
2983		size_t len = 0, res = 0;
2984
2985		grubConf = fopen(path, "r");
2986		if (!grubConf) {
2987		dbgPrintf("Could not open SuSE configuration file '%s'\n",
2988		path);
2989		return 0;
2990		}
2991
2992		while ((res = getline(&line, &len, grubConf)) != -1) {
2993		if (!strncmp(line, "setup", 5)) {
2994		fclose(grubConf);
2995		free(line);
2996		return 1;
2997		}
2998	}	}
	}
2999
3000	if (arg < -1) {	dbgPrintf("SuSE configuration file '%s' does not appear to be valid\n",
3001	fprintf(stderr, _("grubby: bad argument %s: %s\n"),	path);
	poptBadOption(optCon, POPT_BADOPTION_NOALIAS),
	poptStrerror(arg));
	return 1;
	}
3002
3003	if ((chptr = poptGetArg(optCon))) {	fclose(grubConf);
3004	fprintf(stderr, _("grubby: unexpected argument %s\n"), chptr);	free(line);
3005	return 1;	return 0;
3006	}	}
3007
3008	if ((configureLilo + configureGrub + configureELilo +	int suseGrubConfGetLba(const char *path, int *lbaPtr)
3009	configureYaboot + configureSilo + configureZipl +	{
3010	configureExtLinux ) > 1) {	FILE *grubConf;
3011	fprintf(stderr, _("grubby: cannot specify multiple bootloaders\n"));	char *line = NULL;
3012	return 1;	size_t res = 0, len = 0;
	} else if (bootloaderProbe && grubConfig) {
	fprintf(stderr,
	_("grubby: cannot specify config file with --bootloader-probe\n"));
	return 1;
	} else if (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;
	}
3013
3014	if (!cfi) {	if (!path)
3015	#ifdef __ia64__	return 1;
3016	cfi = &eliloConfigType;	if (!lbaPtr)
3017	#elif __powerpc__	return 1;
	cfi = &yabootConfigType;
	#elif __sparc__
	cfi = &siloConfigType;
	#elif __s390__
	cfi = &ziplConfigType;
	#elif __s390x__
	cfi = &ziplConfigtype;
	#else
	cfi = &grubConfigType;
	#endif
	}
3018
3019	if (!grubConfig)	grubConf = fopen(path, "r");
3020	grubConfig = cfi->defaultConfig;	if (!grubConf)
3021		return 1;
3022
3023	if (bootloaderProbe && (displayDefault || kernelInfo || newKernelVersion ||	while ((res = getline(&line, &len, grubConf)) != -1) {
3024	newKernelPath || removeKernelPath || makeDefault ||	if (line[res - 1] == '\n')
3025	defaultKernel)) {	line[res - 1] = '\0';
3026	fprintf(stderr, _("grubby: --bootloader-probe may not be used with "	else if (len > res)
3027	"specified option"));	line[res] = '\0';
3028	return 1;	else {
3029	}	line = realloc(line, res + 1);
3030		line[res] = '\0';
3031		}
3032
3033	if ((displayDefault || kernelInfo) && (newKernelVersion || newKernelPath ||	if (!strncmp(line, "setup", 5)) {
3034	removeKernelPath)) {	if (strstr(line, "--force-lba")) {
3035	fprintf(stderr, _("grubby: --default-kernel and --info may not "	*lbaPtr = 1;
3036	"be used when adding or removing kernels\n"));	} else {
3037	return 1;	*lbaPtr = 0;
3038	}	}
3039		dbgPrintf("lba: %i\n", *lbaPtr);
3040		break;
3041		}
3042		}
3043
3044	if (newKernelPath && !newKernelTitle) {	free(line);
3045	fprintf(stderr, _("grubby: kernel title must be specified\n"));	fclose(grubConf);
3046	return 1;	return 0;
3047	} else if (!newKernelPath && (newKernelTitle  || copyDefault ||	}
	(newKernelInitrd && !updateKernelPath)||
	makeDefault || extraInitrdCount > 0)) {
	fprintf(stderr, _("grubby: kernel path expected\n"));
	return 1;
	}
3048
3049	if (newKernelPath && updateKernelPath) {	int suseGrubConfGetInstallDevice(const char *path, char **devicePtr)
3050	fprintf(stderr, _("grubby: --add-kernel and --update-kernel may"	{
3051	"not be used together"));	FILE *grubConf;
3052	return 1;	char *line = NULL;
3053	}	size_t res = 0, len = 0;
3054		char *lastParamPtr = NULL;
3055		char *secLastParamPtr = NULL;
3056		char installDeviceNumber = '\0';
3057		char *bounds = NULL;
3058
3059	if (makeDefault && defaultKernel) {	if (!path)
3060	fprintf(stderr, _("grubby: --make-default and --default-kernel "	return 1;
3061	"may not be used together\n"));	if (!devicePtr)
3062	return 1;	return 1;
	} else if (defaultKernel && removeKernelPath &&
	!strcmp(defaultKernel, removeKernelPath)) {
	fprintf(stderr, _("grubby: cannot make removed kernel the default\n"));
	return 1;
	} else if (defaultKernel && newKernelPath &&
	!strcmp(defaultKernel, newKernelPath)) {
	makeDefault = 1;
	defaultKernel = NULL;
	}
3063
3064	if (!strcmp(grubConfig, "-") && !outputFile) {	grubConf = fopen(path, "r");
3065	fprintf(stderr, _("grubby: output file must be specified if stdin "	if (!grubConf)
3066	"is used\n"));	return 1;
	return 1;
	}
3067
3068	if (!removeKernelPath && !newKernelPath && !displayDefault && !defaultKernel	while ((res = getline(&line, &len, grubConf)) != -1) {
3069	&& !kernelInfo && !bootloaderProbe && !updateKernelPath	if (strncmp(line, "setup", 5))
3070	&& !removeMBKernel) {	continue;
3071	fprintf(stderr, _("grubby: no action specified\n"));
3072	return 1;	if (line[res - 1] == '\n')
3073	}	line[res - 1] = '\0';
3074		else if (len > res)
3075		line[res] = '\0';
3076		else {
3077		line = realloc(line, res + 1);
3078		line[res] = '\0';
3079		}
3080
3081		lastParamPtr = bounds = line + res;
3082
3083	flags |= badImageOkay ? GRUBBY_BADIMAGE_OKAY : 0;	/* Last parameter in grub may be an optional IMAGE_DEVICE */
3084		while (!isspace(*lastParamPtr))
3085		lastParamPtr--;
3086		lastParamPtr++;
3087
3088		secLastParamPtr = lastParamPtr - 2;
3089		dbgPrintf("lastParamPtr: %s\n", lastParamPtr);
3090
3091		if (lastParamPtr + 3 > bounds) {
3092		dbgPrintf("lastParamPtr going over boundary");
3093		fclose(grubConf);
3094		free(line);
3095		return 1;
3096		}
3097		if (!strncmp(lastParamPtr, "(hd", 3))
3098		lastParamPtr += 3;
3099		dbgPrintf("lastParamPtr: %c\n", *lastParamPtr);
3100
3101		/*
3102		* Second last parameter will decide wether last parameter is
3103		* an IMAGE_DEVICE or INSTALL_DEVICE
3104		*/
3105		while (!isspace(*secLastParamPtr))
3106		secLastParamPtr--;
3107		secLastParamPtr++;
3108
3109		if (secLastParamPtr + 3 > bounds) {
3110		dbgPrintf("secLastParamPtr going over boundary");
3111		fclose(grubConf);
3112		free(line);
3113		return 1;
3114		}
3115		dbgPrintf("secLastParamPtr: %s\n", secLastParamPtr);
3116		if (!strncmp(secLastParamPtr, "(hd", 3)) {
3117		secLastParamPtr += 3;
3118		dbgPrintf("secLastParamPtr: %c\n", *secLastParamPtr);
3119		installDeviceNumber = *secLastParamPtr;
3120		} else {
3121		installDeviceNumber = *lastParamPtr;
3122		}
3123
3124	if (cfi->needsBootPrefix) {	*devicePtr = malloc(6);
3125	if (!bootPrefix) {	snprintf(*devicePtr, 6, "(hd%c)", installDeviceNumber);
3126	bootPrefix = findBootPrefix();	dbgPrintf("installDeviceNumber: %c\n", installDeviceNumber);
3127	if (!bootPrefix) return 1;	fclose(grubConf);
3128	} else {	free(line);
3129	/* this shouldn't end with a / */	return 0;
	if (bootPrefix[strlen(bootPrefix) - 1] == '/')
	bootPrefix[strlen(bootPrefix) - 1] = '\0';
3130	}	}
	} else {
	bootPrefix = "";
	}
3131
3132	if (!cfi->mbAllowExtraInitRds &&	free(line);
3133	extraInitrdCount > 0) {	fclose(grubConf);
	fprintf(stderr, _("grubby: %s doesn't allow multiple initrds\n"), cfi->defaultConfig);
3134	return 1;	return 1;
3135	}	}
3136
3137		int grubGetBootFromDeviceMap(const char *device, char **bootPtr)
3138		{
3139		FILE *deviceMap;
3140		char *line = NULL;
3141		size_t res = 0, len = 0;
3142		char *devicePtr;
3143		char *bounds = NULL;
3144		const char *path;
3145		const static char default_path[] = "/boot/grub/device.map";
3146
3147		if (!device)
3148		return 1;
3149		if (!bootPtr)
3150		return 1;
3151
3152		if ((path = getenv("GRUBBY_GRUB_DEVICE_MAP")) == NULL)
3153		path = default_path;
3154
3155		dbgPrintf("opening grub device.map file from: %s\n", path);
3156		deviceMap = fopen(path, "r");
3157		if (!deviceMap)
3158		return 1;
3159
3160		while ((res = getline(&line, &len, deviceMap)) != -1) {
3161		if (!strncmp(line, "#", 1))
3162		continue;
3163
3164		if (line[res - 1] == '\n')
3165		line[res - 1] = '\0';
3166		else if (len > res)
3167		line[res] = '\0';
3168		else {
3169		line = realloc(line, res + 1);
3170		line[res] = '\0';
3171		}
3172
3173		devicePtr = line;
3174		bounds = line + res;
3175
3176	if (bootloaderProbe) {	while ((isspace(*line) && ((devicePtr + 1) <= bounds)))
3177	int lrc = 0, grc = 0, erc = 0;	devicePtr++;
3178	struct grubConfig * lconfig, * gconfig;	dbgPrintf("device: %s\n", devicePtr);
3179
3180	if (!access(grubConfigType.defaultConfig, F_OK)) {	if (!strncmp(devicePtr, device, strlen(device))) {
3181	gconfig = readConfig(grubConfigType.defaultConfig, &grubConfigType);	devicePtr += strlen(device);
3182	if (!gconfig)	while (isspace(*devicePtr)
3183	grc = 1;	&& ((devicePtr + 1) <= bounds))
3184	else	devicePtr++;
3185	grc = checkForGrub(gconfig);
3186	}	*bootPtr = strdup(devicePtr);
3187		break;
3188	if (!access(liloConfigType.defaultConfig, F_OK)) {	}
3189	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");
3190
3191		free(line);
3192		fclose(deviceMap);
3193	return 0;	return 0;
3194	}	}
3195
3196		int suseGrubConfGetBoot(const char *path, char **bootPtr)
3197		{
3198		char *grubDevice;
3199
3200	config = readConfig(grubConfig, cfi);	if (suseGrubConfGetInstallDevice(path, &grubDevice))
3201	if (!config) return 1;	dbgPrintf("error looking for grub installation device\n");
3202		else
3203		dbgPrintf("grubby installation device: %s\n", grubDevice);
3204
3205	if (displayDefault) {	if (grubGetBootFromDeviceMap(grubDevice, bootPtr))
3206	struct singleLine * line;	dbgPrintf("error looking for grub boot device\n");
3207	struct singleEntry * entry;	else
3208	char * rootspec;	dbgPrintf("grubby boot device: %s\n", *bootPtr);
	if (config->defaultImage == -1) return 0;
	entry = findEntryByIndex(config, config->defaultImage);
	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));
3209
3210		free(grubDevice);
3211	return 0;	return 0;
3212	} else if (kernelInfo)	}
	return displayInfo(config, kernelInfo, bootPrefix);
3213
3214	if (copyDefault) {	int parseSuseGrubConf(int *lbaPtr, char **bootPtr)
3215	template = findTemplate(config, bootPrefix, NULL, 0, flags);	{
3216	if (!template) return 1;	/*
3217	}	* This SuSE grub configuration file at this location is not your
3218		* average grub configuration file, but instead the grub commands
3219		* used to setup grub on that system.
3220		*/
3221		const char *path;
3222		const static char default_path[] = "/etc/grub.conf";
3223
3224	markRemovedImage(config, removeKernelPath, bootPrefix);	if ((path = getenv("GRUBBY_SUSE_GRUB_CONF")) == NULL)
3225	markRemovedImage(config, removeMBKernel, bootPrefix);	path = default_path;
3226	setDefaultImage(config, newKernelPath != NULL, defaultKernel, makeDefault,
3227	bootPrefix, flags);	if (!isSuseGrubConf(path))
3228	setFallbackImage(config, newKernelPath != NULL);	return 1;
3229	if (updateImage(config, updateKernelPath, bootPrefix, newKernelArgs,
3230	removeArgs, newMBKernelArgs, removeMBKernelArgs)) return 1;	if (lbaPtr) {
3231	if (updateKernelPath && newKernelInitrd) {	*lbaPtr = 0;
3232	if (updateInitrd(config, updateKernelPath, bootPrefix,	if (suseGrubConfGetLba(path, lbaPtr))
3233	newKernelInitrd)) return 1;	return 1;
3234	}	}
3235	if (addNewKernel(config, template, bootPrefix, newKernelPath,
3236	newKernelTitle, newKernelArgs, newKernelInitrd,	if (bootPtr) {
3237	extraInitrds, extraInitrdCount,	*bootPtr = NULL;
3238	newMBKernel, newMBKernelArgs)) return 1;	suseGrubConfGetBoot(path, bootPtr);
3239		}
3240
3241	if (numEntries(config) == 0) {	return 0;
3242	fprintf(stderr, _("grubby: doing this would leave no kernel entries. "	}
3243	"Not writing out new config.\n"));
3244	return 1;	int parseSysconfigGrub(int *lbaPtr, char **bootPtr)
3245	}	{
3246		FILE *in;
3247		char buf[1024];
3248		char *chptr;
3249		char *start;
3250		char *param;
3251
3252		in = fopen("/etc/sysconfig/grub", "r");
3253		if (!in)
3254		return 1;
3255
3256		if (lbaPtr)
3257		*lbaPtr = 0;
3258		if (bootPtr)
3259		*bootPtr = NULL;
3260
3261		while (fgets(buf, sizeof(buf), in)) {
3262		start = buf;
3263		while (isspace(*start))
3264		start++;
3265		if (*start == '#')
3266		continue;
3267
3268		chptr = strchr(start, '=');
3269		if (!chptr)
3270		continue;
3271		chptr--;
3272		while (*chptr && isspace(*chptr))
3273		chptr--;
3274		chptr++;
3275		*chptr = '\0';
3276
3277		param = chptr + 1;
3278		while (*param && isspace(*param))
3279		param++;
3280		if (*param == '=') {
3281		param++;
3282		while (*param && isspace(*param))
3283		param++;
3284		}
3285
3286		chptr = param;
3287		while (*chptr && !isspace(*chptr))
3288		chptr++;
3289		*chptr = '\0';
3290
3291		if (!strcmp(start, "forcelba") && !strcmp(param, "1") && lbaPtr)
3292		*lbaPtr = 1;
3293		else if (!strcmp(start, "boot") && bootPtr)
3294		*bootPtr = strdup(param);
3295		}
3296
3297		fclose(in);
3298
3299		return 0;
3300		}
3301
3302		void dumpSysconfigGrub(void)
3303		{
3304		char *boot = NULL;
3305		int lba;
3306
3307		if (isSuseSystem()) {
3308		if (parseSuseGrubConf(&lba, &boot)) {
3309		free(boot);
3310		return;
3311		}
3312		} else {
3313		if (parseSysconfigGrub(&lba, &boot)) {
3314		free(boot);
3315		return;
3316		}
3317		}
3318
3319		if (lba)
3320		printf("lba\n");
3321		if (boot) {
3322		printf("boot=%s\n", boot);
3323		free(boot);
3324		}
3325		}
3326
3327		int displayInfo(struct grubConfig *config, char *kernel, const char *prefix)
3328		{
3329		int i = 0;
3330		struct singleEntry *entry;
3331		struct singleLine *line;
3332
3333		entry = findEntryByPath(config, kernel, prefix, &i);
3334		if (!entry) {
3335		fprintf(stderr, _("grubby: kernel not found\n"));
3336		return 1;
3337		}
3338
3339		/* this is a horrible hack to support /etc/sysconfig/grub; there must
3340		be a better way */
3341		if (config->cfi == &grubConfigType) {
3342		dumpSysconfigGrub();
3343		} else {
3344		line = getLineByType(LT_BOOT, config->theLines);
3345		if (line && line->numElements >= 1) {
3346		printf("boot=%s\n", line->elements[1].item);
3347		}
3348
3349		line = getLineByType(LT_LBA, config->theLines);
3350		if (line)
3351		printf("lba\n");
3352		}
3353
3354		displayEntry(config, entry, prefix, i);
3355
3356		i++;
3357		while ((entry = findEntryByPath(config, kernel, prefix, &i))) {
3358		displayEntry(config, entry, prefix, i);
3359		i++;
3360		}
3361
3362		return 0;
3363		}
3364
3365		struct singleLine *addLineTmpl(struct singleEntry *entry,
3366		struct singleLine *tmplLine,
3367		struct singleLine *prevLine,
3368		const char *val, struct configFileInfo *cfi)
3369		{
3370		struct singleLine *newLine = lineDup(tmplLine);
3371
3372		if (isEfi && cfi == &grub2ConfigType) {
3373		enum lineType_e old = newLine->type;
3374		newLine->type = preferredLineType(newLine->type, cfi);
3375		if (old != newLine->type)
3376		newLine->elements[0].item =
3377		getKeyByType(newLine->type, cfi);
3378		}
3379
3380		if (val) {
3381		/* override the inherited value with our own.
3382		* This is a little weak because it only applies to elements[1]
3383		*/
3384		if (newLine->numElements > 1)
3385		removeElement(newLine, 1);
3386		insertElement(newLine, val, 1, cfi);
3387
3388		/* but try to keep the rootspec from the template... sigh */
3389		if (tmplLine->
3390		type & (LT_HYPER | LT_KERNEL | LT_MBMODULE | LT_INITRD |
3391		LT_KERNEL_EFI | LT_INITRD_EFI | LT_KERNEL_16 |
3392		LT_INITRD_16)) {
3393		const char *prfx = tmplLine->elements[1].item;
3394		size_t rs = getRootSpecifier(prfx);
3395		if (isinitrd(tmplLine->type)) {
3396		for (struct singleLine *l = entry->lines;
3397		rs == 0 && l; l = l->next) {
3398		if (iskernel(l->type)) {
3399		prfx = l->elements[1].item;
3400		rs = getRootSpecifier(prfx);
3401		break;
3402		}
3403		}
3404		}
3405		if (rs > 0) {
3406		free(newLine->elements[1].item);
3407		newLine->elements[1].item = sdupprintf(
3408		"%.*s%s", (int) rs, prfx, val);
3409		}
3410		}
3411		}
3412
3413		dbgPrintf("addLineTmpl(%s)\n", newLine->numElements ?
3414		newLine->elements[0].item : "");
3415
3416		if (!entry->lines) {
3417		/* first one on the list */
3418		entry->lines = newLine;
3419		} else if (prevLine) {
3420		/* add after prevLine */
3421		newLine->next = prevLine->next;
3422		prevLine->next = newLine;
3423		}
3424
3425		return newLine;
3426		}
3427
3428		/* val may be NULL */
3429		struct singleLine *addLine(struct singleEntry *entry,
3430		struct configFileInfo *cfi,
3431		enum lineType_e type, char *defaultIndent,
3432		const char *val)
3433		{
3434		struct singleLine *line, *prev;
3435		struct keywordTypes *kw;
3436		struct singleLine tmpl;
3437
3438		/* NB: This function shouldn't allocate items on the heap, rather on
3439		* the stack since it calls addLineTmpl which will make copies.
3440		*/
3441		if (type == LT_TITLE && cfi->titleBracketed) {
3442		/* we're doing a bracketed title (zipl) */
3443		tmpl.type = type;
3444		tmpl.numElements = 1;
3445		tmpl.elements = alloca(sizeof(*tmpl.elements));
3446		tmpl.elements[0].item = alloca(strlen(val) + 3);
3447		sprintf(tmpl.elements[0].item, "[%s]", val);
3448		tmpl.elements[0].indent = "";
3449		val = NULL;
3450		} else if (type == LT_MENUENTRY) {
3451		char *lineend = "--class gnu-linux --class gnu --class os {";
3452		if (!val) {
3453		fprintf(stderr,
3454		"Line type LT_MENUENTRY requires a value\n");
3455		abort();
3456		}
3457		kw = getKeywordByType(type, cfi);
3458		if (!kw) {
3459		fprintf(stderr,
3460		"Looking up keyword for unknown type %d\n",
3461		type);
3462		abort();
3463		}
3464		tmpl.indent = "";
3465		tmpl.type = type;
3466		tmpl.numElements = 3;
3467		tmpl.elements =
3468		alloca(sizeof(*tmpl.elements) * tmpl.numElements);
3469		tmpl.elements[0].item = kw->key;
3470		tmpl.elements[0].indent = alloca(2);
3471		sprintf(tmpl.elements[0].indent, "%c", kw->nextChar);
3472		tmpl.elements[1].item = (char *)val;
3473		tmpl.elements[1].indent = alloca(2);
3474		sprintf(tmpl.elements[1].indent, "%c", kw->nextChar);
3475		tmpl.elements[2].item = alloca(strlen(lineend) + 1);
3476		strcpy(tmpl.elements[2].item, lineend);
3477		tmpl.elements[2].indent = "";
3478		} else {
3479		kw = getKeywordByType(type, cfi);
3480		if (!kw) {
3481		fprintf(stderr,
3482		"Looking up keyword for unknown type %d\n",
3483		type);
3484		abort();
3485		}
3486		tmpl.type = type;
3487		tmpl.numElements = val ? 2 : 1;
3488		tmpl.elements =
3489		alloca(sizeof(*tmpl.elements) * tmpl.numElements);
3490		tmpl.elements[0].item = kw->key;
3491		tmpl.elements[0].indent = alloca(2);
3492		sprintf(tmpl.elements[0].indent, "%c", kw->nextChar);
3493		if (val) {
3494		tmpl.elements[1].item = (char *)val;
3495		tmpl.elements[1].indent = "";
3496		}
3497		}
3498
3499		/* The last non-empty line gives us the indention to us and the line
3500		* to insert after. Note that comments are considered empty lines,
3501		* which may not be ideal? If there are no lines or we are looking at
3502		* the first line, we use defaultIndent (the first line is normally
3503		* indented differently from the rest) */
3504		for (line = entry->lines, prev = NULL; line; line = line->next) {
3505		if (line->numElements)
3506		prev = line;
3507		/* fall back on the last line if prev isn't otherwise set */
3508		if (!line->next && !prev)
3509		prev = line;
3510		}
3511
3512		struct singleLine *menuEntry;
3513		menuEntry = getLineByType(LT_MENUENTRY, entry->lines);
3514		if (tmpl.type == LT_ENTRY_END) {
3515		if (menuEntry)
3516		tmpl.indent = menuEntry->indent;
3517		else
3518		tmpl.indent = defaultIndent ? : "";
3519		} else if (tmpl.type != LT_MENUENTRY) {
3520		if (menuEntry)
3521		tmpl.indent = "\t";
3522		else if (prev == entry->lines)
3523		tmpl.indent = defaultIndent ? : "";
3524		else
3525		tmpl.indent = prev->indent;
3526		}
3527
3528		return addLineTmpl(entry, &tmpl, prev, val, cfi);
3529		}
3530
3531		void removeLine(struct singleEntry *entry, struct singleLine *line)
3532		{
3533		struct singleLine *prev;
3534		int i;
3535
3536		for (i = 0; i < line->numElements; i++) {
3537		free(line->elements[i].item);
3538		free(line->elements[i].indent);
3539		}
3540		free(line->elements);
3541		free(line->indent);
3542
3543		if (line == entry->lines) {
3544		entry->lines = line->next;
3545		} else {
3546		prev = entry->lines;
3547		while (prev->next != line)
3548		prev = prev->next;
3549		prev->next = line->next;
3550		}
3551
3552		free(line);
3553		}
3554
3555		static void requote(struct singleLine *tmplLine, struct configFileInfo *cfi)
3556		{
3557		struct singleLine newLine = {
3558		.indent = tmplLine->indent,
3559		.type = tmplLine->type,
3560		.next = tmplLine->next,
3561		};
3562		int firstQuotedItem = -1;
3563		int quoteLen = 0;
3564		int j;
3565		int element = 0;
3566		char *c;
3567
3568		c = malloc(strlen(tmplLine->elements[0].item) + 1);
3569		strcpy(c, tmplLine->elements[0].item);
3570		insertElement(&newLine, c, element++, cfi);
3571		free(c);
3572		c = NULL;
3573
3574		for (j = 1; j < tmplLine->numElements; j++) {
3575		if (firstQuotedItem == -1) {
3576		quoteLen += strlen(tmplLine->elements[j].item);
3577
3578		if (isquote(tmplLine->elements[j].item[0])) {
3579		firstQuotedItem = j;
3580		quoteLen +=
3581		strlen(tmplLine->elements[j].indent);
3582		} else {
3583		c = malloc(quoteLen + 1);
3584		strcpy(c, tmplLine->elements[j].item);
3585		insertElement(&newLine, c, element++, cfi);
3586		free(c);
3587		quoteLen = 0;
3588		}
3589		} else {
3590		int itemlen = strlen(tmplLine->elements[j].item);
3591		quoteLen += itemlen;
3592		quoteLen += strlen(tmplLine->elements[j].indent);
3593
3594		if (isquote(tmplLine->elements[j].item[itemlen - 1])) {
3595		c = malloc(quoteLen + 1);
3596		c[0] = '\0';
3597		for (int i = firstQuotedItem; i < j + 1; i++) {
3598		strcat(c, tmplLine->elements[i].item);
3599		strcat(c, tmplLine->elements[i].indent);
3600		}
3601		insertElement(&newLine, c, element++, cfi);
3602		free(c);
3603
3604		firstQuotedItem = -1;
3605		quoteLen = 0;
3606		}
3607		}
3608		}
3609		while (tmplLine->numElements)
3610		removeElement(tmplLine, 0);
3611		if (tmplLine->elements)
3612		free(tmplLine->elements);
3613
3614		tmplLine->numElements = newLine.numElements;
3615		tmplLine->elements = newLine.elements;
3616		}
3617
3618		static void insertElement(struct singleLine *line,
3619		const char *item, int insertHere,
3620		struct configFileInfo *cfi)
3621		{
3622		struct keywordTypes *kw;
3623		char indent[2] = "";
3624
3625		/* sanity check */
3626		if (insertHere > line->numElements) {
3627		dbgPrintf
3628		("insertElement() adjusting insertHere from %d to %d\n",
3629		insertHere, line->numElements);
3630		insertHere = line->numElements;
3631		}
3632
3633		line->elements = realloc(line->elements, (line->numElements + 1) *
3634		sizeof(*line->elements));
3635		memmove(&line->elements[insertHere + 1],
3636		&line->elements[insertHere],
3637		(line->numElements - insertHere) * sizeof(*line->elements));
3638		line->elements[insertHere].item = strdup(item);
3639
3640		kw = getKeywordByType(line->type, cfi);
3641
3642		if (line->numElements == 0) {
3643		indent[0] = '\0';
3644		} else if (insertHere == 0) {
3645		indent[0] = kw->nextChar;
3646		} else if (kw->separatorChar != '\0') {
3647		indent[0] = kw->separatorChar;
3648		} else {
3649		indent[0] = ' ';
3650		}
3651
3652		if (insertHere > 0 && line->elements[insertHere - 1].indent[0] == '\0') {
3653		/* move the end-of-line forward */
3654		line->elements[insertHere].indent =
3655		line->elements[insertHere - 1].indent;
3656		line->elements[insertHere - 1].indent = strdup(indent);
3657		} else {
3658		line->elements[insertHere].indent = strdup(indent);
3659		}
3660
3661		line->numElements++;
3662
3663		dbgPrintf("insertElement(%s, '%s%s', %d)\n",
3664		line->elements[0].item,
3665		line->elements[insertHere].item,
3666		line->elements[insertHere].indent, insertHere);
3667		}
3668
3669		static void removeElement(struct singleLine *line, int removeHere)
3670		{
3671		int i;
3672
3673		/* sanity check */
3674		if (removeHere >= line->numElements)
3675		return;
3676
3677		dbgPrintf("removeElement(%s, %d:%s)\n", line->elements[0].item,
3678		removeHere, line->elements[removeHere].item);
3679
3680		free(line->elements[removeHere].item);
3681
3682		if (removeHere > 1) {
3683		/* previous argument gets this argument's post-indentation */
3684		free(line->elements[removeHere - 1].indent);
3685		line->elements[removeHere - 1].indent =
3686		line->elements[removeHere].indent;
3687		} else {
3688		free(line->elements[removeHere].indent);
3689		}
3690
3691		/* now collapse the array, but don't bother to realloc smaller */
3692		for (i = removeHere; i < line->numElements - 1; i++)
3693		line->elements[i] = line->elements[i + 1];
3694
3695		line->numElements--;
3696		}
3697
3698		static int argNameMatch(const char *one, const char *two)
3699		{
3700		char *first, *second;
3701		char *chptra, *chptrb;
3702		int rc;
3703
3704		first = strcpy(alloca(strlen(one) + 1), one);
3705		second = strcpy(alloca(strlen(two) + 1), two);
3706
3707		chptra = strchr(first, '=');
3708		if (chptra)
3709		*chptra = '\0';
3710
3711		chptrb = strchr(second, '=');
3712		if (chptrb)
3713		*chptrb = '\0';
3714
3715		rc = strcmp(first, second);
3716
3717		if (chptra)
3718		*chptra = '=';
3719		if (chptrb)
3720		*chptrb = '=';
3721
3722		return rc;
3723		}
3724
3725		static int argHasValue(const char *arg)
3726		{
3727		char *chptr;
3728
3729		chptr = strchr(arg, '=');
3730		if (chptr)
3731		return 1;
3732		return 0;
3733		}
3734
3735		static int argValueMatch(const char *one, const char *two)
3736		{
3737		char *first, *second;
3738		char *chptra, *chptrb;
3739
3740		first = strcpy(alloca(strlen(one) + 1), one);
3741		second = strcpy(alloca(strlen(two) + 1), two);
3742
3743		chptra = strchr(first, '=');
3744		if (chptra)
3745		chptra += 1;
3746
3747		chptrb = strchr(second, '=');
3748		if (chptrb)
3749		chptrb += 1;
3750
3751		if (!chptra && !chptrb)
3752		return 0;
3753		else if (!chptra)
3754		return *chptrb - 0;
3755		else if (!chptrb)
3756		return 0 - *chptra;
3757		else
3758		return strcmp(chptra, chptrb);
3759		}
3760
3761		int updateActualImage(struct grubConfig *cfg, const char *image,
3762		const char *prefix, const char *addArgs,
3763		const char *removeArgs, int multibootArgs)
3764		{
3765		struct singleEntry *entry;
3766		struct singleLine *line, *rootLine;
3767		int index = 0;
3768		int i, k;
3769		const char **newArgs, **oldArgs;
3770		const char **arg;
3771		int useKernelArgs, useRoot;
3772		int firstElement;
3773		int *usedElements;
3774		int doreplace;
3775
3776		if (!image)
3777		return 0;
3778
3779		if (!addArgs) {
3780		newArgs = malloc(sizeof(*newArgs));
3781		*newArgs = NULL;
3782		} else {
3783		if (poptParseArgvString(addArgs, NULL, &newArgs)) {
3784		fprintf(stderr,
3785		_("grubby: error separating arguments '%s'\n"),
3786		addArgs);
3787		return 1;
3788		}
3789		}
3790
3791		if (!removeArgs) {
3792		oldArgs = malloc(sizeof(*oldArgs));
3793		*oldArgs = NULL;
3794		} else {
3795		if (poptParseArgvString(removeArgs, NULL, &oldArgs)) {
3796		fprintf(stderr,
3797		_("grubby: error separating arguments '%s'\n"),
3798		removeArgs);
3799		free(newArgs);
3800		return 1;
3801		}
3802		}
3803
3804		useKernelArgs = (getKeywordByType(LT_KERNELARGS, cfg->cfi)
3805		&& (!multibootArgs || cfg->cfi->mbConcatArgs));
3806
3807		useRoot = (getKeywordByType(LT_ROOT, cfg->cfi)
3808		&& !multibootArgs);
3809
3810		for (; (entry = findEntryByPath(cfg, image, prefix, &index)); index++) {
3811
3812		if (multibootArgs && !entry->multiboot)
3813		continue;
3814
3815		/* Determine where to put the args.  If this config supports
3816		* LT_KERNELARGS, use that.  Otherwise use
3817		* LT_HYPER/LT_KERNEL/LT_MBMODULE lines.
3818		*/
3819		if (useKernelArgs) {
3820		line = getLineByType(LT_KERNELARGS, entry->lines);
3821		if (!line) {
3822		/* no LT_KERNELARGS, need to add it */
3823		line = addLine(entry, cfg->cfi, LT_KERNELARGS,
3824		cfg->secondaryIndent, NULL);
3825		}
3826		firstElement = 1;
3827
3828		} else if (multibootArgs) {
3829		line = getLineByType(LT_HYPER, entry->lines);
3830		if (!line) {
3831		/* a multiboot entry without LT_HYPER? */
3832		continue;
3833		}
3834		firstElement = 2;
3835
3836		} else {
3837		line =
3838		getLineByType(LT_KERNEL | LT_MBMODULE |
3839		LT_KERNEL_EFI | LT_KERNEL_16,
3840		entry->lines);
3841		if (!line) {
3842		/* no LT_KERNEL or LT_MBMODULE in this entry? */
3843		continue;
3844		}
3845		firstElement = 2;
3846		}
3847
3848		/* handle the elilo case which does:
3849		*   append="hypervisor args -- kernel args"
3850		*/
3851		if (entry->multiboot && cfg->cfi->mbConcatArgs) {
3852		/* this is a multiboot entry, make sure there's
3853		* -- on the args line
3854		*/
3855		for (i = firstElement; i < line->numElements; i++) {
3856		if (!strcmp(line->elements[i].item, "--"))
3857		break;
3858		}
3859		if (i == line->numElements) {
3860		/* assume all existing args are kernel args,
3861		* prepend -- to make it official
3862		*/
3863		insertElement(line, "--", firstElement,
3864		cfg->cfi);
3865		i = firstElement;
3866		}
3867		if (!multibootArgs) {
3868		/* kernel args start after the -- */
3869		firstElement = i + 1;
3870		}
3871		} else if (cfg->cfi->mbConcatArgs) {
3872		/* this is a non-multiboot entry, remove hyper args */
3873		for (i = firstElement; i < line->numElements; i++) {
3874		if (!strcmp(line->elements[i].item, "--"))
3875		break;
3876		}
3877		if (i < line->numElements) {
3878		/* remove args up to -- */
3879		while (strcmp
3880		(line->elements[firstElement].item,
3881		"--"))
3882		removeElement(line, firstElement);
3883		/* remove -- */
3884		removeElement(line, firstElement);
3885		}
3886		}
3887
3888		usedElements = calloc(line->numElements, sizeof(*usedElements));
3889
3890		for (k = 0, arg = newArgs; *arg; arg++, k++) {
3891
3892		doreplace = 1;
3893		for (i = firstElement; i < line->numElements; i++) {
3894		if (multibootArgs && cfg->cfi->mbConcatArgs &&
3895		!strcmp(line->elements[i].item, "--")) {
3896		/* reached the end of hyper args, insert here */
3897		doreplace = 0;
3898		break;
3899		}
3900		if (usedElements[i])
3901		continue;
3902		if (!argNameMatch(line->elements[i].item, *arg)) {
3903		usedElements[i] = 1;
3904		break;
3905		}
3906		}
3907
3908		if (i < line->numElements && doreplace) {
3909		/* direct replacement */
3910		free(line->elements[i].item);
3911		line->elements[i].item = strdup(*arg);
3912
3913		} else if (useRoot && !strncmp(*arg, "root=/dev/", 10)) {
3914		/* root= replacement */
3915		rootLine = getLineByType(LT_ROOT, entry->lines);
3916		if (rootLine) {
3917		free(rootLine->elements[1].item);
3918		rootLine->elements[1].item =
3919		strdup(*arg + 5);
3920		} else {
3921		rootLine =
3922		addLine(entry, cfg->cfi, LT_ROOT,
3923		cfg->secondaryIndent,
3924		*arg + 5);
3925		}
3926		}
3927
3928		else {
3929		/* insert/append */
3930		insertElement(line, *arg, i, cfg->cfi);
3931		usedElements =
3932		realloc(usedElements,
3933		line->numElements *
3934		sizeof(*usedElements));
3935		memmove(&usedElements[i + 1], &usedElements[i],
3936		line->numElements - i - 1);
3937		usedElements[i] = 1;
3938
3939		/* if we updated a root= here even though
3940		* there is a LT_ROOT available we need to
3941		* remove the LT_ROOT entry (this will happen
3942		* if we switch from a device to a label) */
3943		if (useRoot && !strncmp(*arg, "root=", 5)) {
3944		rootLine =
3945		getLineByType(LT_ROOT,
3946		entry->lines);
3947		if (rootLine)
3948		removeLine(entry, rootLine);
3949		}
3950		}
3951		}
3952
3953		free(usedElements);
3954
3955		for (arg = oldArgs; *arg; arg++) {
3956		for (i = firstElement; i < line->numElements; i++) {
3957		if (multibootArgs && cfg->cfi->mbConcatArgs &&
3958		!strcmp(line->elements[i].item, "--"))
3959		/* reached the end of hyper args, stop here */
3960		break;
3961		if (!argNameMatch(line->elements[i].item, *arg)) {
3962		if (!argHasValue(*arg) ||
3963		!argValueMatch(line->elements[i].item, *arg)) {
3964		removeElement(line, i);
3965		break;
3966		}
3967		}
3968		}
3969		/* handle removing LT_ROOT line too */
3970		if (useRoot && !strncmp(*arg, "root=", 5)) {
3971		rootLine = getLineByType(LT_ROOT, entry->lines);
3972		if (rootLine)
3973		removeLine(entry, rootLine);
3974		}
3975		}
3976
3977		if (line->numElements == 1) {
3978		/* don't need the line at all (note it has to be a
3979		LT_KERNELARGS for this to happen */
3980		removeLine(entry, line);
3981		}
3982		}
3983
3984		free(newArgs);
3985		free(oldArgs);
3986
3987		return 0;
3988		}
3989
3990		int updateImage(struct grubConfig *cfg, const char *image,
3991		const char *prefix, const char *addArgs,
3992		const char *removeArgs,
3993		const char *addMBArgs, const char *removeMBArgs)
3994		{
3995		int rc = 0;
3996
3997		if (!image)
3998		return rc;
3999
4000		/* update the main args first... */
4001		if (addArgs || removeArgs)
4002		rc = updateActualImage(cfg, image, prefix, addArgs, removeArgs,
4003		0);
4004		if (rc)
4005		return rc;
4006
4007		/* and now any multiboot args */
4008		if (addMBArgs || removeMBArgs)
4009		rc = updateActualImage(cfg, image, prefix, addMBArgs,
4010		removeMBArgs, 1);
4011		return rc;
4012		}
4013
4014		int addMBInitrd(struct grubConfig *cfg, const char *newMBKernel,
4015		const char *image, const char *prefix, const char *initrd,
4016		const char *title)
4017		{
4018		struct singleEntry *entry;
4019		struct singleLine *line, *kernelLine, *endLine = NULL;
4020		int index = 0;
4021
4022		if (!image)
4023		return 0;
4024
4025		for (; (entry = findEntryByPath(cfg, image, prefix, &index)); index++) {
4026		kernelLine = getLineByType(LT_MBMODULE, entry->lines);
4027		if (!kernelLine)
4028		continue;
4029
4030		/* if title is supplied, the entry's title must match it. */
4031		if (title) {
4032		char *linetitle;
4033
4034		line =
4035		getLineByType(LT_TITLE | LT_MENUENTRY,
4036		entry->lines);
4037		if (!line)
4038		continue;
4039
4040		linetitle = extractTitle(cfg, line);
4041		if (!linetitle)
4042		continue;
4043		if (strcmp(title, linetitle)) {
4044		free(linetitle);
4045		continue;
4046		}
4047		free(linetitle);
4048		}
4049
4050		if (prefix) {
4051		int prefixLen = strlen(prefix);
4052		if (!strncmp(initrd, prefix, prefixLen))
4053		initrd += prefixLen;
4054		}
4055		endLine = getLineByType(LT_ENTRY_END, entry->lines);
4056		if (endLine)
4057		removeLine(entry, endLine);
4058		line =
4059		addLine(entry, cfg->cfi,
4060		preferredLineType(LT_MBMODULE, cfg->cfi),
4061		kernelLine->indent, initrd);
4062		if (!line)
4063		return 1;
4064		if (endLine) {
4065		line = addLine(entry, cfg->cfi, LT_ENTRY_END, "", NULL);
4066		if (!line)
4067		return 1;
4068		}
4069
4070		break;
4071		}
4072
4073		return 0;
4074		}
4075
4076		int updateInitrd(struct grubConfig *cfg, const char *image,
4077		const char *prefix, const char *initrd, const char *title)
4078		{
4079		struct singleEntry *entry;
4080		struct singleLine *line, *kernelLine, *endLine = NULL;
4081		int index = 0;
4082
4083		if (!image)
4084		return 0;
4085
4086		for (; (entry = findEntryByPath(cfg, image, prefix, &index)); index++) {
4087		kernelLine =
4088		getLineByType(LT_KERNEL | LT_KERNEL_EFI | LT_KERNEL_16,
4089		entry->lines);
4090		if (!kernelLine)
4091		continue;
4092
4093		/* if title is supplied, the entry's title must match it. */
4094		if (title) {
4095		char *linetitle;
4096
4097		line =
4098		getLineByType(LT_TITLE | LT_MENUENTRY,
4099		entry->lines);
4100		if (!line)
4101		continue;
4102
4103		linetitle = extractTitle(cfg, line);
4104		if (!linetitle)
4105		continue;
4106		if (strcmp(title, linetitle)) {
4107		free(linetitle);
4108		continue;
4109		}
4110		free(linetitle);
4111		}
4112
4113		line =
4114		getLineByType(LT_INITRD | LT_INITRD_EFI | LT_INITRD_16,
4115		entry->lines);
4116		if (line)
4117		removeLine(entry, line);
4118		if (prefix) {
4119		int prefixLen = strlen(prefix);
4120		if (!strncmp(initrd, prefix, prefixLen))
4121		initrd += prefixLen;
4122		}
4123		endLine = getLineByType(LT_ENTRY_END, entry->lines);
4124		if (endLine)
4125		removeLine(entry, endLine);
4126		enum lineType_e lt;
4127		switch (kernelLine->type) {
4128		case LT_KERNEL:
4129		lt = LT_INITRD;
4130		break;
4131		case LT_KERNEL_EFI:
4132		lt = LT_INITRD_EFI;
4133		break;
4134		case LT_KERNEL_16:
4135		lt = LT_INITRD_16;
4136		break;
4137		default:
4138		lt = preferredLineType(LT_INITRD, cfg->cfi);
4139		}
4140		line = addLine(entry, cfg->cfi, lt, kernelLine->indent, initrd);
4141		if (!line)
4142		return 1;
4143		if (endLine) {
4144		line = addLine(entry, cfg->cfi, LT_ENTRY_END, "", NULL);
4145		if (!line)
4146		return 1;
4147		}
4148
4149		break;
4150		}
4151
4152		return 0;
4153		}
4154
4155		int checkDeviceBootloader(const char *device, const unsigned char *boot)
4156		{
4157		int fd;
4158		unsigned char bootSect[512];
4159		int offset;
4160
4161		fd = open(device, O_RDONLY);
4162		if (fd < 0) {
4163		fprintf(stderr, _("grubby: unable to open %s: %s\n"),
4164		device, strerror(errno));
4165		return 1;
4166		}
4167
4168		if (read(fd, bootSect, 512) != 512) {
4169		fprintf(stderr, _("grubby: unable to read %s: %s\n"),
4170		device, strerror(errno));
4171		return 1;
4172		}
4173		close(fd);
4174
4175		/* first three bytes should match, a jmp short should be in there */
4176		if (memcmp(boot, bootSect, 3))
4177		return 0;
4178
4179		if (boot[1] == JMP_SHORT_OPCODE) {
4180		offset = boot[2] + 2;
4181		} else if (boot[1] == 0xe8 || boot[1] == 0xe9) {
4182		offset = (boot[3] << 8) + boot[2] + 2;
4183		} else if (boot[0] == JMP_SHORT_OPCODE) {
4184		offset = boot[1] + 2;
4185		/*
4186		* it looks like grub, when copying stage1 into the mbr,
4187		* patches stage1 right after the JMP location, replacing
4188		* other instructions such as JMPs for NOOPs. So, relax the
4189		* check a little bit by skipping those different bytes.
4190		*/
4191		if ((bootSect[offset + 1] == NOOP_OPCODE)
4192		&& (bootSect[offset + 2] == NOOP_OPCODE)) {
4193		offset = offset + 3;
4194		}
4195		} else if (boot[0] == 0xe8 || boot[0] == 0xe9) {
4196		offset = (boot[2] << 8) + boot[1] + 2;
4197		} else {
4198		return 0;
4199		}
4200
4201		if (memcmp(boot + offset, bootSect + offset, CODE_SEG_SIZE))
4202		return 0;
4203
4204		return 2;
4205		}
4206
4207		int checkLiloOnRaid(char *mdDev, const unsigned char *boot)
4208		{
4209		int fd;
4210		char buf[65536];
4211		char *end;
4212		char *chptr;
4213		char *chptr2;
4214		int rc;
4215
4216		/* it's on raid; we need to parse /proc/mdstat and check all of the
4217		*raw* devices listed in there */
4218
4219		if (!strncmp(mdDev, "/dev/", 5))
4220		mdDev += 5;
4221
4222		if ((fd = open("/proc/mdstat", O_RDONLY)) < 0) {
4223		fprintf(stderr, _("grubby: failed to open /proc/mdstat: %s\n"),
4224		strerror(errno));
4225		return 2;
4226		}
4227
4228		rc = read(fd, buf, sizeof(buf) - 1);
4229		if (rc < 0 || rc == (sizeof(buf) - 1)) {
4230		fprintf(stderr, _("grubby: failed to read /proc/mdstat: %s\n"),
4231		strerror(errno));
4232		close(fd);
4233		return 2;
4234		}
4235		close(fd);
4236		buf[rc] = '\0';
4237
4238		chptr = buf;
4239		while (*chptr) {
4240		end = strchr(chptr, '\n');
4241		if (!end)
4242		break;
4243		*end = '\0';
4244
4245		if (!strncmp(chptr, mdDev, strlen(mdDev)) &&
4246		chptr[strlen(mdDev)] == ' ') {
4247
4248		/* found the device */
4249		while (*chptr && *chptr != ':')
4250		chptr++;
4251		chptr++;
4252		while (*chptr && isspace(*chptr))
4253		chptr++;
4254
4255		/* skip the "active" bit */
4256		while (*chptr && !isspace(*chptr))
4257		chptr++;
4258		while (*chptr && isspace(*chptr))
4259		chptr++;
4260
4261		/* skip the raid level */
4262		while (*chptr && !isspace(*chptr))
4263		chptr++;
4264		while (*chptr && isspace(*chptr))
4265		chptr++;
4266
4267		/* everything else is partition stuff */
4268		while (*chptr) {
4269		chptr2 = chptr;
4270		while (*chptr2 && *chptr2 != '[')
4271		chptr2++;
4272		if (!*chptr2)
4273		break;
4274
4275		/* yank off the numbers at the end */
4276		chptr2--;
4277		while (isdigit(*chptr2) && chptr2 > chptr)
4278		chptr2--;
4279		chptr2++;
4280		*chptr2 = '\0';
4281
4282		/* Better, now we need the /dev/ back. We're
4283		* done with everything before this point, so
4284		* we can just put the /dev/ part there.
4285		* There will always be room. */
4286		memcpy(chptr - 5, "/dev/", 5);
4287		rc = checkDeviceBootloader(chptr - 5, boot);
4288		if (rc != 2) {
4289		return rc;
4290		}
4291
4292		chptr = chptr2 + 1;
4293		/* skip the [11] bit */
4294		while (*chptr && !isspace(*chptr))
4295		chptr++;
4296		/* and move to the next one */
4297		while (*chptr && isspace(*chptr))
4298		chptr++;
4299		}
4300
4301		/*  we're good to go */
4302		return 2;
4303		}
4304
4305		chptr = end + 1;
4306		}
4307
4308		fprintf(stderr,
4309		_("grubby: raid device /dev/%s not found in /proc/mdstat\n"),
4310		mdDev);
4311		return 0;
4312		}
4313
4314		int checkForLilo(struct grubConfig *config)
4315		{
4316		int fd;
4317		unsigned char boot[512];
4318		struct singleLine *line;
4319
4320		for (line = config->theLines; line; line = line->next)
4321		if (line->type == LT_BOOT)
4322		break;
4323
4324		if (!line) {
4325		fprintf(stderr,
4326		_
4327		("grubby: no boot line found in lilo configuration\n"));
4328		return 1;
4329		}
4330
4331		if (line->numElements != 2)
4332		return 1;
4333
4334		fd = open("/boot/boot.b", O_RDONLY);
4335		if (fd < 0) {
4336		fprintf(stderr, _("grubby: unable to open %s: %s\n"),
4337		"/boot/boot.b", strerror(errno));
4338		return 1;
4339		}
4340
4341		if (read(fd, boot, 512) != 512) {
4342		fprintf(stderr, _("grubby: unable to read %s: %s\n"),
4343		"/boot/boot.b", strerror(errno));
4344		return 1;
4345		}
4346		close(fd);
4347
4348		if (!strncmp("/dev/md", line->elements[1].item, 7))
4349		return checkLiloOnRaid(line->elements[1].item, boot);
4350
4351		return checkDeviceBootloader(line->elements[1].item, boot);
4352		}
4353
4354		int checkForGrub2(struct grubConfig *config)
4355		{
4356		if (!access("/etc/grub.d/", R_OK))
4357		return 2;
4358
4359		return 1;
4360		}
4361
4362		int checkForGrub(struct grubConfig *config)
4363		{
4364		int fd;
4365		unsigned char bootSect[512];
4366		char *boot;
4367		int onSuse = isSuseSystem();
4368
4369		if (onSuse) {
4370		if (parseSuseGrubConf(NULL, &boot))
4371		return 0;
4372		} else {
4373		if (parseSysconfigGrub(NULL, &boot))
4374		return 0;
4375		}
4376
4377		/* assume grub is not installed -- not an error condition */
4378		if (!boot)
4379		return 0;
4380
4381		fd = open("/boot/grub/stage1", O_RDONLY);
4382		if (fd < 0)
4383		/* this doesn't exist if grub hasn't been installed */
4384		return 0;
4385
4386		if (read(fd, bootSect, 512) != 512) {
4387		fprintf(stderr, _("grubby: unable to read %s: %s\n"),
4388		"/boot/grub/stage1", strerror(errno));
4389		close(fd);
4390		return 1;
4391		}
4392		close(fd);
4393
4394		/* The more elaborate checks do not work on SuSE. The checks done
4395		* seem to be reasonble (at least for now), so just return success
4396		*/
4397		if (onSuse)
4398		return 2;
4399
4400		return checkDeviceBootloader(boot, bootSect);
4401		}
4402
4403		int checkForExtLinux(struct grubConfig *config)
4404		{
4405		int fd;
4406		unsigned char bootSect[512];
4407		char *boot;
4408		char executable[] = "/boot/extlinux/extlinux";
4409
4410		printf("entered: checkForExtLinux()\n");
4411
4412		if (parseSysconfigGrub(NULL, &boot))
4413		return 0;
4414
4415		/* assume grub is not installed -- not an error condition */
4416		if (!boot)
4417		return 0;
4418
4419		fd = open(executable, O_RDONLY);
4420		if (fd < 0)
4421		/* this doesn't exist if grub hasn't been installed */
4422		return 0;
4423
4424		if (read(fd, bootSect, 512) != 512) {
4425		fprintf(stderr, _("grubby: unable to read %s: %s\n"),
4426		executable, strerror(errno));
4427		return 1;
4428		}
4429		close(fd);
4430
4431		return checkDeviceBootloader(boot, bootSect);
4432		}
4433
4434		int checkForYaboot(struct grubConfig *config)
4435		{
4436		/*
4437		* This is a simplistic check that we consider good enough for own puporses
4438		*
4439		* If we were to properly check if yaboot is *installed* we'd need to:
4440		* 1) get the system boot device (LT_BOOT)
4441		* 2) considering it's a raw filesystem, check if the yaboot binary matches
4442		*    the content on the boot device
4443		* 3) if not, copy the binary to a temporary file and run "addnote" on it
4444		* 4) check again if binary and boot device contents match
4445		*/
4446		if (!access("/etc/yaboot.conf", R_OK))
4447		return 2;
4448
4449		return 1;
4450		}
4451
4452		int checkForElilo(struct grubConfig *config)
4453		{
4454		if (!access("/etc/elilo.conf", R_OK))
4455		return 2;
4456
4457		return 1;
4458		}
4459
4460		static size_t getRootSpecifier(const char *str)
4461		{
4462		size_t rs = 0;
4463
4464		if (*str == '(') {
4465		for (; str[rs] != ')' && !isspace(str[rs]); rs++) {
4466		if (!str[rs])
4467		return rs;
4468		}
4469		rs++;
4470		}
4471
4472		return rs + subvolPrefix(str + rs);
4473		}
4474
4475		static char *getInitrdVal(struct grubConfig *config,
4476		const char *prefix, struct singleLine *tmplLine,
4477		const char *newKernelInitrd,
4478		const char **extraInitrds, int extraInitrdCount)
4479		{
4480		char *initrdVal, *end;
4481		int i;
4482		size_t totalSize;
4483		size_t prefixLen;
4484		char separatorChar;
4485
4486		prefixLen = strlen(prefix);
4487		totalSize = strlen(newKernelInitrd) - prefixLen + 1 /* \0 */ ;
4488
4489		for (i = 0; i < extraInitrdCount; i++) {
4490		totalSize += sizeof(separatorChar);
4491		totalSize += strlen(extraInitrds[i]) - prefixLen;
4492		}
4493
4494		initrdVal = end = malloc(totalSize);
4495
4496		end = stpcpy(end, newKernelInitrd + prefixLen);
4497
4498		separatorChar = getKeywordByType(LT_INITRD, config->cfi)->separatorChar;
4499		for (i = 0; i < extraInitrdCount; i++) {
4500		const char *extraInitrd;
4501		int j;
4502
4503		extraInitrd = extraInitrds[i] + prefixLen;
4504		/* Don't add entries that are already there */
4505		if (tmplLine != NULL) {
4506		for (j = 2; j < tmplLine->numElements; j++)
4507		if (strcmp
4508		(extraInitrd,
4509		tmplLine->elements[j].item) == 0)
4510		break;
4511
4512		if (j != tmplLine->numElements)
4513		continue;
4514		}
4515
4516		*end++ = separatorChar;
4517		end = stpcpy(end, extraInitrd);
4518		}
4519
4520		return initrdVal;
4521		}
4522
4523		int addNewKernel(struct grubConfig *config, struct singleEntry *template,
4524		const char *prefix,
4525		const char *newKernelPath, const char *newKernelTitle,
4526		const char *newKernelArgs, const char *newKernelInitrd,
4527		const char **extraInitrds, int extraInitrdCount,
4528		const char *newMBKernel, const char *newMBKernelArgs,
4529		const char *newDevTreePath, int newIndex)
4530		{
4531		struct singleEntry *new, *entry, *prev = NULL;
4532		struct singleLine *newLine = NULL, *tmplLine = NULL, *masterLine = NULL;
4533		int needs;
4534		char *indexs;
4535		char *chptr;
4536		int rc;
4537
4538		if (!newKernelPath)
4539		return 0;
4540
4541		rc = asprintf(&indexs, "%d", newIndex);
4542		if (rc < 0)
4543		return 1;
4544
4545		/* if the newKernelTitle is too long silently munge it into something
4546		* we can live with. truncating is first check, then we'll just mess with
4547		* it until it looks better */
4548		if (config->cfi->maxTitleLength &&
4549		(strlen(newKernelTitle) > config->cfi->maxTitleLength)) {
4550		char *buf = alloca(config->cfi->maxTitleLength + 7);
4551		char *numBuf = alloca(config->cfi->maxTitleLength + 1);
4552		int i = 1;
4553
4554		sprintf(buf, "TITLE=%.*s", config->cfi->maxTitleLength,
4555		newKernelTitle);
4556		while (findEntryByPath(config, buf, NULL, NULL)) {
4557		sprintf(numBuf, "%d", i++);
4558		strcpy(buf + strlen(buf) - strlen(numBuf), numBuf);
4559		}
4560
4561		newKernelTitle = buf + 6;
4562		}
4563
4564		new = malloc(sizeof(*new));
4565		new->skip = 0;
4566		new->multiboot = 0;
4567		new->lines = NULL;
4568		entry = config->entries;
4569		for (unsigned int i = 0; i < newIndex; i++) {
4570		if (!entry)
4571		break;
4572		prev = entry;
4573		entry = entry->next;
4574		}
4575		new->next = entry;
4576
4577		if (prev)
4578		prev->next = new;
4579		else
4580		config->entries = new;
4581
4582		/* copy/update from the template */
4583		needs = NEED_KERNEL | NEED_TITLE;
4584		if (newKernelInitrd)
4585		needs |= NEED_INITRD;
4586		if (newMBKernel) {
4587		needs |= NEED_MB;
4588		new->multiboot = 1;
4589		}
4590		if (newDevTreePath && getKeywordByType(LT_DEVTREE, config->cfi))
4591		needs |= NEED_DEVTREE;
4592
4593		if (template) {
4594		for (masterLine = template->lines;
4595		masterLine && (tmplLine = lineDup(masterLine));
4596		lineFree(tmplLine), masterLine = masterLine->next) {
4597		dbgPrintf("addNewKernel processing %d\n",
4598		tmplLine->type);
4599
4600		/* skip comments */
4601		chptr = tmplLine->indent;
4602		while (*chptr && isspace(*chptr))
4603		chptr++;
4604		if (*chptr == '#')
4605		continue;
4606
4607		if (iskernel(tmplLine->type)
4608		&& tmplLine->numElements >= 2) {
4609		if (!template->multiboot && (needs & NEED_MB)) {
4610		/* it's not a multiboot template and
4611		* this is the kernel line.  Try to
4612		* be intelligent about inserting the
4613		* hypervisor at the same time.
4614		*/
4615		if (config->cfi->mbHyperFirst) {
4616		/* insert the hypervisor first */
4617		newLine =
4618		addLine(new, config->cfi,
4619		LT_HYPER,
4620		tmplLine->indent,
4621		newMBKernel +
4622		strlen(prefix));
4623		/* set up for adding the
4624		* kernel line */
4625		free(tmplLine->indent);
4626		tmplLine->indent =
4627		strdup(config->
4628		secondaryIndent);
4629		needs &= ~NEED_MB;
4630		}
4631		if (needs & NEED_KERNEL) {
4632		/* use addLineTmpl to
4633		* preserve line elements,
4634		* otherwise we could just
4635		* call addLine.
4636		* Unfortunately this means
4637		* making some changes to the
4638		* template such as the
4639		* indent change above and
4640		* the type change below.
4641		*/
4642		struct keywordTypes *mbm_kw =
4643		getKeywordByType
4644		(LT_MBMODULE, config->cfi);
4645		if (mbm_kw) {
4646		tmplLine->type =
4647		LT_MBMODULE;
4648		free(tmplLine->
4649		elements[0].item);
4650		tmplLine->elements[0].
4651		item =
4652		strdup(mbm_kw->key);
4653		}
4654		newLine =
4655		addLineTmpl(new, tmplLine,
4656		newLine,
4657		newKernelPath +
4658		strlen(prefix),
4659		config->cfi);
4660		needs &= ~NEED_KERNEL;
4661		}
4662		if (needs & NEED_MB) { /* !mbHyperFirst */
4663		newLine =
4664		addLine(new, config->cfi,
4665		LT_HYPER,
4666		config->
4667		secondaryIndent,
4668		newMBKernel +
4669		strlen(prefix));
4670		needs &= ~NEED_MB;
4671		}
4672		} else if (needs & NEED_KERNEL) {
4673		newLine =
4674		addLineTmpl(new, tmplLine, newLine,
4675		newKernelPath +
4676		strlen(prefix),
4677		config->cfi);
4678		needs &= ~NEED_KERNEL;
4679		}
4680
4681		} else if (tmplLine->type == LT_HYPER &&
4682		tmplLine->numElements >= 2) {
4683		if (needs & NEED_MB) {
4684		newLine =
4685		addLineTmpl(new, tmplLine, newLine,
4686		newMBKernel +
4687		strlen(prefix),
4688		config->cfi);
4689		needs &= ~NEED_MB;
4690		}
4691
4692		} else if (tmplLine->type == LT_MBMODULE &&
4693		tmplLine->numElements >= 2) {
4694		if (new->multiboot) {
4695		if (needs & NEED_KERNEL) {
4696		newLine =
4697		addLineTmpl(new, tmplLine,
4698		newLine,
4699		newKernelPath +
4700		strlen(prefix),
4701		config->cfi);
4702		needs &= ~NEED_KERNEL;
4703		} else if (config->cfi->mbInitRdIsModule
4704		&& (needs & NEED_INITRD)) {
4705		char *initrdVal;
4706		initrdVal =
4707		getInitrdVal(config, prefix,
4708		tmplLine,
4709		newKernelInitrd,
4710		extraInitrds,
4711		extraInitrdCount);
4712		newLine =
4713		addLineTmpl(new, tmplLine,
4714		newLine,
4715		initrdVal,
4716		config->cfi);
4717		free(initrdVal);
4718		needs &= ~NEED_INITRD;
4719		}
4720		} else if (needs & NEED_KERNEL) {
4721		/* template is multi but new is not,
4722		* insert the kernel in the first
4723		* module slot
4724		*/
4725		tmplLine->type =
4726		preferredLineType(LT_KERNEL,
4727		config->cfi);
4728		free(tmplLine->elements[0].item);
4729		tmplLine->elements[0].item =
4730		strdup(getKeywordByType
4731		(tmplLine->type,
4732		config->cfi)->key);
4733		newLine =
4734		addLineTmpl(new, tmplLine, newLine,
4735		newKernelPath +
4736		strlen(prefix),
4737		config->cfi);
4738		needs &= ~NEED_KERNEL;
4739		} else if (needs & NEED_INITRD) {
4740		char *initrdVal;
4741		/* template is multi but new is not,
4742		* insert the initrd in the second
4743		* module slot
4744		*/
4745		tmplLine->type =
4746		preferredLineType(LT_INITRD,
4747		config->cfi);
4748		free(tmplLine->elements[0].item);
4749		tmplLine->elements[0].item =
4750		strdup(getKeywordByType
4751		(tmplLine->type,
4752		config->cfi)->key);
4753		initrdVal =
4754		getInitrdVal(config, prefix,
4755		tmplLine,
4756		newKernelInitrd,
4757		extraInitrds,
4758		extraInitrdCount);
4759		newLine =
4760		addLineTmpl(new, tmplLine, newLine,
4761		initrdVal, config->cfi);
4762		free(initrdVal);
4763		needs &= ~NEED_INITRD;
4764		}
4765
4766		} else if (isinitrd(tmplLine->type)
4767		&& tmplLine->numElements >= 2) {
4768		if (needs & NEED_INITRD && new->multiboot
4769		&& !template->multiboot
4770		&& config->cfi->mbInitRdIsModule) {
4771		/* make sure we don't insert the
4772		* module initrd before the module
4773		* kernel... if we don't do it here,
4774		* it will be inserted following the
4775		* template.
4776		*/
4777		if (!needs & NEED_KERNEL) {
4778		char *initrdVal;
4779
4780		initrdVal =
4781		getInitrdVal(config, prefix,
4782		tmplLine,
4783		newKernelInitrd,
4784		extraInitrds,
4785		extraInitrdCount);
4786		newLine =
4787		addLine(new, config->cfi,
4788		LT_MBMODULE,
4789		config->
4790		secondaryIndent,
4791		initrdVal);
4792		free(initrdVal);
4793		needs &= ~NEED_INITRD;
4794		}
4795		} else if (needs & NEED_INITRD) {
4796		char *initrdVal;
4797		initrdVal =
4798		getInitrdVal(config, prefix,
4799		tmplLine,
4800		newKernelInitrd,
4801		extraInitrds,
4802		extraInitrdCount);
4803		newLine =
4804		addLineTmpl(new, tmplLine, newLine,
4805		initrdVal, config->cfi);
4806		free(initrdVal);
4807		needs &= ~NEED_INITRD;
4808		}
4809
4810		} else if (tmplLine->type == LT_MENUENTRY &&
4811		(needs & NEED_TITLE)) {
4812		requote(tmplLine, config->cfi);
4813		char *nkt = malloc(strlen(newKernelTitle) + 3);
4814		strcpy(nkt, "'");
4815		strcat(nkt, newKernelTitle);
4816		strcat(nkt, "'");
4817		newLine =
4818		addLineTmpl(new, tmplLine, newLine, nkt,
4819		config->cfi);
4820		free(nkt);
4821		needs &= ~NEED_TITLE;
4822		} else if (tmplLine->type == LT_TITLE &&
4823		(needs & NEED_TITLE)) {
4824		if (tmplLine->numElements >= 2) {
4825		newLine =
4826		addLineTmpl(new, tmplLine, newLine,
4827		newKernelTitle,
4828		config->cfi);
4829		needs &= ~NEED_TITLE;
4830		} else if (tmplLine->numElements == 1 &&
4831		config->cfi->titleBracketed) {
4832		/* addLineTmpl doesn't handle
4833		* titleBracketed */
4834		newLine =
4835		addLine(new, config->cfi, LT_TITLE,
4836		tmplLine->indent,
4837		newKernelTitle);
4838		needs &= ~NEED_TITLE;
4839		}
4840		} else if (tmplLine->type == LT_ECHO) {
4841		requote(tmplLine, config->cfi);
4842		static const char *prefix = "'Loading ";
4843		if (tmplLine->numElements > 1 &&
4844		strstr(tmplLine->elements[1].item, prefix)
4845		&& masterLine->next
4846		&& iskernel(masterLine->next->type)) {
4847		char *newTitle =
4848		malloc(strlen(prefix) +
4849		strlen(newKernelTitle) + 2);
4850
4851		strcpy(newTitle, prefix);
4852		strcat(newTitle, newKernelTitle);
4853		strcat(newTitle, "'");
4854		newLine =
4855		addLine(new, config->cfi, LT_ECHO,
4856		tmplLine->indent, newTitle);
4857		free(newTitle);
4858		} else {
4859		/* pass through other lines from the
4860		* template */
4861		newLine =
4862		addLineTmpl(new, tmplLine, newLine,
4863		NULL, config->cfi);
4864		}
4865		} else if (tmplLine->type == LT_DEVTREE &&
4866		tmplLine->numElements == 2
4867		&& newDevTreePath) {
4868		newLine =
4869		addLineTmpl(new, tmplLine, newLine,
4870		newDevTreePath + strlen(prefix),
4871		config->cfi);
4872		needs &= ~NEED_DEVTREE;
4873		} else if (tmplLine->type == LT_ENTRY_END
4874		&& needs & NEED_DEVTREE) {
4875		const char *ndtp = newDevTreePath;
4876		if (!strncmp
4877		(newDevTreePath, prefix, strlen(prefix)))
4878		ndtp += strlen(prefix);
4879		newLine = addLine(new, config->cfi, LT_DEVTREE,
4880		config->secondaryIndent,
4881		ndtp);
4882		needs &= ~NEED_DEVTREE;
4883		newLine =
4884		addLineTmpl(new, tmplLine, newLine, NULL,
4885		config->cfi);
4886		} else {
4887		/* pass through other lines from the template */
4888		newLine =
4889		addLineTmpl(new, tmplLine, newLine, NULL,
4890		config->cfi);
4891		}
4892		}
4893
4894		} else {
4895		/* don't have a template, so start the entry with the
4896		* appropriate starting line
4897		*/
4898		switch (config->cfi->entryStart) {
4899		case LT_KERNEL:
4900		case LT_KERNEL_EFI:
4901		case LT_KERNEL_16:
4902		if (new->multiboot && config->cfi->mbHyperFirst) {
4903		/* fall through to LT_HYPER */
4904		} else {
4905		newLine = addLine(new, config->cfi,
4906		preferredLineType(LT_KERNEL,
4907		config->
4908		cfi),
4909		config->primaryIndent,
4910		newKernelPath +
4911		strlen(prefix));
4912		needs &= ~NEED_KERNEL;
4913		break;
4914		}
4915
4916		case LT_HYPER:
4917		newLine = addLine(new, config->cfi, LT_HYPER,
4918		config->primaryIndent,
4919		newMBKernel + strlen(prefix));
4920		needs &= ~NEED_MB;
4921		break;
4922
4923		case LT_MENUENTRY:{
4924		char *nkt = malloc(strlen(newKernelTitle) + 3);
4925		strcpy(nkt, "'");
4926		strcat(nkt, newKernelTitle);
4927		strcat(nkt, "'");
4928		newLine =
4929		addLine(new, config->cfi, LT_MENUENTRY,
4930		config->primaryIndent, nkt);
4931		free(nkt);
4932		needs &= ~NEED_TITLE;
4933		needs |= NEED_END;
4934		break;
4935		}
4936		case LT_TITLE:
4937		if (useextlinuxmenu != 0) { // We just need useextlinuxmenu to not be zero (set above)
4938		char *templabel;
4939		int x = 0, y = 0;
4940
4941		templabel = strdup(newKernelTitle);
4942		while (templabel[x]) {
4943		if (templabel[x] == ' ') {
4944		y = x;
4945		while (templabel[y]) {
4946		templabel[y] =
4947		templabel[y + 1];
4948		y++;
4949		}
4950		}
4951		x++;
4952		}
4953		newLine = addLine(new, config->cfi, LT_TITLE,
4954		config->primaryIndent,
4955		templabel);
4956		free(templabel);
4957		} else {
4958		newLine = addLine(new, config->cfi, LT_TITLE,
4959		config->primaryIndent,
4960		newKernelTitle);
4961		}
4962		needs &= ~NEED_TITLE;
4963		break;
4964
4965		default:
4966		abort();
4967		}
4968		}
4969
4970		struct singleLine *endLine = NULL;
4971		endLine = getLineByType(LT_ENTRY_END, new->lines);
4972		if (endLine) {
4973		removeLine(new, endLine);
4974		needs |= NEED_END;
4975		}
4976
4977		/* add the remainder of the lines, i.e. those that either
4978		* weren't present in the template, or in the case of no template,
4979		* all the lines following the entryStart.
4980		*/
4981		if (needs & NEED_TITLE) {
4982		newLine = addLine(new, config->cfi, LT_TITLE,
4983		config->secondaryIndent, newKernelTitle);
4984		needs &= ~NEED_TITLE;
4985		}
4986		if ((needs & NEED_MB) && config->cfi->mbHyperFirst) {
4987		newLine = addLine(new, config->cfi, LT_HYPER,
4988		config->secondaryIndent,
4989		newMBKernel + strlen(prefix));
4990		needs &= ~NEED_MB;
4991		}
4992		if (needs & NEED_KERNEL) {
4993		newLine = addLine(new, config->cfi,
4994		(new->multiboot
4995		&& getKeywordByType(LT_MBMODULE,
4996		config->cfi))
4997		? LT_MBMODULE : preferredLineType(LT_KERNEL,
4998		config->
4999		cfi),
5000		config->secondaryIndent,
5001		newKernelPath + strlen(prefix));
5002		needs &= ~NEED_KERNEL;
5003		}
5004		if (needs & NEED_MB) {
5005		newLine = addLine(new, config->cfi, LT_HYPER,
5006		config->secondaryIndent,
5007		newMBKernel + strlen(prefix));
5008		needs &= ~NEED_MB;
5009		}
5010		if (needs & NEED_INITRD) {
5011		char *initrdVal;
5012		initrdVal =
5013		getInitrdVal(config, prefix, NULL, newKernelInitrd,
5014		extraInitrds, extraInitrdCount);
5015		newLine =
5016		addLine(new, config->cfi,
5017		(new->multiboot
5018		&& getKeywordByType(LT_MBMODULE, config->cfi))
5019		? LT_MBMODULE : preferredLineType(LT_INITRD,
5020		config->cfi),
5021		config->secondaryIndent, initrdVal);
5022		free(initrdVal);
5023		needs &= ~NEED_INITRD;
5024		}
5025		if (needs & NEED_DEVTREE) {
5026		newLine = addLine(new, config->cfi, LT_DEVTREE,
5027		config->secondaryIndent, newDevTreePath);
5028		needs &= ~NEED_DEVTREE;
5029		}
5030
5031		/* NEEDS_END must be last on bootloaders that need it... */
5032		if (needs & NEED_END) {
5033		newLine = addLine(new, config->cfi, LT_ENTRY_END,
5034		config->secondaryIndent, NULL);
5035		needs &= ~NEED_END;
5036		}
5037
5038		if (needs) {
5039		printf(_("grubby: needs=%d, aborting\n"), needs);
5040		abort();
5041		}
5042
5043		if (updateImage(config, indexs, prefix, newKernelArgs, NULL,
5044		newMBKernelArgs, NULL)) {
5045		config->isModified = 1;
5046		return 1;
5047		}
5048
5049		return 0;
5050		}
5051
5052		int main(int argc, const char **argv)
5053		{
5054		poptContext optCon;
5055		const char *grubConfig = NULL;
5056		char *outputFile = NULL;
5057		int arg = 0;
5058		int flags = 0;
5059		int badImageOkay = 0;
5060		int configureGrub2 = 0;
5061		int configureLilo = 0, configureELilo = 0, configureGrub = 0;
5062		int configureYaboot = 0, configureSilo = 0, configureZipl = 0;
5063		int configureExtLinux = 0;
5064		int bootloaderProbe = 0;
5065		int extraInitrdCount = 0;
5066		char *updateKernelPath = NULL;
5067		char *newKernelPath = NULL;
5068		char *removeKernelPath = NULL;
5069		char *newKernelArgs = NULL;
5070		char *newKernelInitrd = NULL;
5071		char *newKernelTitle = NULL;
5072		char *newDevTreePath = NULL;
5073		char *newMBKernel = NULL;
5074		char *newMBKernelArgs = NULL;
5075		int newIndex = 0;
5076		char *removeMBKernelArgs = NULL;
5077		char *removeMBKernel = NULL;
5078		char *bootPrefix = NULL;
5079		char *defaultKernel = NULL;
5080		char *removeArgs = NULL;
5081		char *kernelInfo = NULL;
5082		char *extraInitrds[MAX_EXTRA_INITRDS] = { NULL };
5083		char *envPath = NULL;
5084		const char *chptr = NULL;
5085		struct configFileInfo *cfi = NULL;
5086		struct grubConfig *config;
5087		struct singleEntry *template = NULL;
5088		int copyDefault = 0, makeDefault = 0;
5089		int displayDefault = 0;
5090		int displayDefaultIndex = 0;
5091		int displayDefaultTitle = 0;
5092		int defaultIndex = -1;
5093		struct poptOption options[] = {
5094		{"add-kernel", 0, POPT_ARG_STRING, &newKernelPath, 0,
5095		_("add an entry for the specified kernel"), _("kernel-path")},
5096		{"add-multiboot", 0, POPT_ARG_STRING, &newMBKernel, 0,
5097		_("add an entry for the specified multiboot kernel"), NULL},
5098		{"args", 0, POPT_ARG_STRING, &newKernelArgs, 0,
5099		_("default arguments for the new kernel or new arguments for "
5100		"kernel being updated"), _("args")},
5101		{"mbargs", 0, POPT_ARG_STRING, &newMBKernelArgs, 0,
5102		_("default arguments for the new multiboot kernel or "
5103		"new arguments for multiboot kernel being updated"), NULL},
5104		{"mounts", 0, POPT_ARG_STRING, &mounts, 0,
5105		_("path to fake /proc/mounts file (for testing only)"),
5106		_("mounts")},
5107		{"bad-image-okay", 0, 0, &badImageOkay, 0,
5108		_
5109		("don't sanity check images in boot entries (for testing only)"),
5110		NULL},
5111		{"boot-filesystem", 0, POPT_ARG_STRING, &bootPrefix, 0,
5112		_
5113		("filesystem which contains /boot directory (for testing only)"),
5114		_("bootfs")},
5115		#if defined(__i386__) || defined(__x86_64__) || defined (__powerpc64__) || defined (__ia64__)
5116		{"bootloader-probe", 0, POPT_ARG_NONE, &bootloaderProbe, 0,
5117		_("check which bootloader is installed on boot sector")},
5118		#endif
5119		{"config-file", 'c', POPT_ARG_STRING, &grubConfig, 0,
5120		_("path to grub config file to update (\"-\" for stdin)"),
5121		_("path")},
5122		{"copy-default", 0, 0, &copyDefault, 0,
5123		_("use the default boot entry as a template for the new entry "
5124		"being added; if the default is not a linux image, or if "
5125		"the kernel referenced by the default image does not exist, "
5126		"the first linux entry whose kernel does exist is used as the "
5127		"template"), NULL},
5128		{"debug", 0, 0, &debug, 0,
5129		_("print debugging information for failures")},
5130		{"default-kernel", 0, 0, &displayDefault, 0,
5131		_("display the path of the default kernel")},
5132		{"default-index", 0, 0, &displayDefaultIndex, 0,
5133		_("display the index of the default kernel")},
5134		{"default-title", 0, 0, &displayDefaultTitle, 0,
5135		_("display the title of the default kernel")},
5136		{"devtree", 0, POPT_ARG_STRING, &newDevTreePath, 0,
5137		_("device tree file for new stanza"), _("dtb-path")},
5138		{"devtreedir", 0, POPT_ARG_STRING, &newDevTreePath, 0,
5139		_("device tree directory for new stanza"), _("dtb-path")},
5140		{"elilo", 0, POPT_ARG_NONE, &configureELilo, 0,
5141		_("configure elilo bootloader")},
5142		{"efi", 0, POPT_ARG_NONE, &isEfi, 0,
5143		_("force grub2 stanzas to use efi")},
5144		{"env", 0, POPT_ARG_STRING, &envPath, 0,
5145		_("path for environment data"),
5146		_("path")},
5147		{"extlinux", 0, POPT_ARG_NONE, &configureExtLinux, 0,
5148		_("configure extlinux bootloader (from syslinux)")},
5149		{"grub", 0, POPT_ARG_NONE, &configureGrub, 0,
5150		_("configure grub bootloader")},
5151		{"grub2", 0, POPT_ARG_NONE, &configureGrub2, 0,
5152		_("configure grub2 bootloader")},
5153		{"info", 0, POPT_ARG_STRING, &kernelInfo, 0,
5154		_("display boot information for specified kernel"),
5155		_("kernel-path")},
5156		{"initrd", 0, POPT_ARG_STRING, &newKernelInitrd, 0,
5157		_("initrd image for the new kernel"), _("initrd-path")},
5158		{"extra-initrd", 'i', POPT_ARG_STRING, NULL, 'i',
5159		_
5160		("auxiliary initrd image for things other than the new kernel"),
5161		_("initrd-path")},
5162		{"lilo", 0, POPT_ARG_NONE, &configureLilo, 0,
5163		_("configure lilo bootloader")},
5164		{"make-default", 0, 0, &makeDefault, 0,
5165		_("make the newly added entry the default boot entry"), NULL},
5166		{"output-file", 'o', POPT_ARG_STRING, &outputFile, 0,
5167		_("path to output updated config file (\"-\" for stdout)"),
5168		_("path")},
5169		{"remove-args", 0, POPT_ARG_STRING, &removeArgs, 0,
5170		_("remove kernel arguments"), NULL},
5171		{"remove-mbargs", 0, POPT_ARG_STRING, &removeMBKernelArgs, 0,
5172		_("remove multiboot kernel arguments"), NULL},
5173		{"remove-kernel", 0, POPT_ARG_STRING, &removeKernelPath, 0,
5174		_("remove all entries for the specified kernel"),
5175		_("kernel-path")},
5176		{"remove-multiboot", 0, POPT_ARG_STRING, &removeMBKernel, 0,
5177		_("remove all entries for the specified multiboot kernel"),
5178		NULL},
5179		{"set-default", 0, POPT_ARG_STRING, &defaultKernel, 0,
5180		_("make the first entry referencing the specified kernel "
5181		"the default"), _("kernel-path")},
5182		{"set-default-index", 0, POPT_ARG_INT, &defaultIndex, 0,
5183		_("make the given entry index the default entry"),
5184		_("entry-index")},
5185		{"set-index", 0, POPT_ARG_INT, &newIndex, 0,
5186		_("use the given index when creating a new entry"),
5187		_("entry-index")},
5188		{"silo", 0, POPT_ARG_NONE, &configureSilo, 0,
5189		_("configure silo bootloader")},
5190		{"title", 0, POPT_ARG_STRING, &newKernelTitle, 0,
5191		_("title to use for the new kernel entry"), _("entry-title")},
5192		{"update-kernel", 0, POPT_ARG_STRING, &updateKernelPath, 0,
5193		_("updated information for the specified kernel"),
5194		_("kernel-path")},
5195		{"version", 'v', 0, NULL, 'v',
5196		_("print the version of this program and exit"), NULL},
5197		{"yaboot", 0, POPT_ARG_NONE, &configureYaboot, 0,
5198		_("configure yaboot bootloader")},
5199		{"zipl", 0, POPT_ARG_NONE, &configureZipl, 0,
5200		_("configure zipl bootloader")},
5201		POPT_AUTOHELP {0, 0, 0, 0, 0}
5202		};
5203
5204		useextlinuxmenu = 0;
5205
5206		int i = 0;
5207		for (int j = 1; j < argc; j++)
5208		i += strlen(argv[j]) + 1;
5209		saved_command_line = malloc(i);
5210		if (!saved_command_line) {
5211		fprintf(stderr, "grubby: %m\n");
5212		exit(1);
5213		}
5214		saved_command_line[0] = '\0';
5215		for (int j = 1; j < argc; j++) {
5216		strcat(saved_command_line, argv[j]);
5217		strncat(saved_command_line, j == argc - 1 ? "" : " ", 1);
5218		}
5219
5220		optCon = poptGetContext("grubby", argc, argv, options, 0);
5221		poptReadDefaultConfig(optCon, 1);
5222
5223		while ((arg = poptGetNextOpt(optCon)) >= 0) {
5224		switch (arg) {
5225		case 'v':
5226		printf("grubby version %s\n", VERSION);
5227		exit(0);
5228		break;
5229		case 'i':
5230		if (extraInitrdCount < MAX_EXTRA_INITRDS) {
5231		extraInitrds[extraInitrdCount++] =
5232		strdup(poptGetOptArg(optCon));
5233		} else {
5234		fprintf(stderr,
5235		_
5236		("grubby: extra initrd maximum is %d\n"),
5237		extraInitrdCount);
5238		return 1;
5239		}
5240		break;
5241		}
5242		}
5243
5244		if (arg < -1) {
5245		fprintf(stderr, _("grubby: bad argument %s: %s\n"),
5246		poptBadOption(optCon, POPT_BADOPTION_NOALIAS),
5247		poptStrerror(arg));
5248		return 1;
5249		}
5250
5251		if ((chptr = poptGetArg(optCon))) {
5252		fprintf(stderr, _("grubby: unexpected argument %s\n"), chptr);
5253		return 1;
5254		}
5255
5256		if ((configureLilo + configureGrub2 + configureGrub + configureELilo +
5257		configureYaboot + configureSilo + configureZipl +
5258		configureExtLinux) > 1) {
5259		fprintf(stderr,
5260		_("grubby: cannot specify multiple bootloaders\n"));
5261		return 1;
5262		} else if (bootloaderProbe && grubConfig) {
5263		fprintf(stderr,
5264		_
5265		("grubby: cannot specify config file with --bootloader-probe\n"));
5266		return 1;
5267		} else if (configureGrub2) {
5268		cfi = &grub2ConfigType;
5269		if (envPath)
5270		cfi->envFile = envPath;
5271		} else if (configureLilo) {
5272		cfi = &liloConfigType;
5273		} else if (configureGrub) {
5274		cfi = &grubConfigType;
5275		} else if (configureELilo) {
5276		cfi = &eliloConfigType;
5277		} else if (configureYaboot) {
5278		cfi = &yabootConfigType;
5279		} else if (configureSilo) {
5280		cfi = &siloConfigType;
5281		} else if (configureZipl) {
5282		cfi = &ziplConfigType;
5283		} else if (configureExtLinux) {
5284		cfi = &extlinuxConfigType;
5285		useextlinuxmenu = 1;
5286		}
5287
5288		if (!cfi) {
5289		if (grub2FindConfig(&grub2ConfigType)) {
5290		cfi = &grub2ConfigType;
5291		configureGrub2 = 1;
5292		if (envPath)
5293		cfi->envFile = envPath;
5294		} else {
5295		#ifdef __ia64__
5296		cfi = &eliloConfigType;
5297		configureLilo = 1;
5298		#elif defined(__powerpc__)
5299		cfi = &yabootConfigType;
5300		configureYaboot = 1;
5301		#elif defined(__sparc__)
5302		cfi = &siloConfigType;
5303		configureSilo = 1;
5304		#elif defined(__s390__) || defined(__s390x__)
5305		cfi = &ziplConfigType;
5306		configureZipl = 1;
5307		#else
5308		cfi = &grubConfigType;
5309		configureGrub = 1;
5310		#endif
5311		}
5312		}
5313
5314		if (!grubConfig) {
5315		if (cfi->findConfig)
5316		grubConfig = cfi->findConfig(cfi);
5317		if (!grubConfig)
5318		grubConfig = cfi->defaultConfig;
5319		}
5320
5321		if (bootloaderProbe && (displayDefault || kernelInfo ||
5322		newKernelPath || removeKernelPath || makeDefault
5323		|| defaultKernel || displayDefaultIndex
5324		|| displayDefaultTitle
5325		|| (defaultIndex >= 0))) {
5326		fprintf(stderr,
5327		_("grubby: --bootloader-probe may not be used with "
5328		"specified option"));
5329		return 1;
5330		}
5331
5332		if ((displayDefault || kernelInfo) && (newKernelPath ||
5333		removeKernelPath)) {
5334		fprintf(stderr, _("grubby: --default-kernel and --info may not "
5335		"be used when adding or removing kernels\n"));
5336		return 1;
5337		}
5338
5339		if (newKernelPath && !newKernelTitle) {
5340		fprintf(stderr, _("grubby: kernel title must be specified\n"));
5341		return 1;
5342		} else if (!newKernelPath && (copyDefault ||
5343		(newKernelInitrd && !updateKernelPath) ||
5344		makeDefault || extraInitrdCount > 0)) {
5345		fprintf(stderr, _("grubby: kernel path expected\n"));
5346		return 1;
5347		}
5348
5349		if (newKernelPath && updateKernelPath) {
5350		fprintf(stderr, _("grubby: --add-kernel and --update-kernel may"
5351		"not be used together"));
5352		return 1;
5353		}
5354
5355		if (makeDefault && defaultKernel) {
5356		fprintf(stderr, _("grubby: --make-default and --default-kernel "
5357		"may not be used together\n"));
5358		return 1;
5359		} else if (defaultKernel && removeKernelPath &&
5360		!strcmp(defaultKernel, removeKernelPath)) {
5361		fprintf(stderr,
5362		_("grubby: cannot make removed kernel the default\n"));
5363		return 1;
5364		} else if (defaultKernel && newKernelPath &&
5365		!strcmp(defaultKernel, newKernelPath)) {
5366		makeDefault = 1;
5367		defaultKernel = NULL;
5368		} else if (defaultKernel && (defaultIndex >= 0)) {
5369		fprintf(stderr,
5370		_("grubby: --set-default and --set-default-index "
5371		"may not be used together\n"));
5372		return 1;
5373		}
5374
5375		if (grubConfig && !strcmp(grubConfig, "-") && !outputFile) {
5376		fprintf(stderr,
5377		_("grubby: output file must be specified if stdin "
5378		"is used\n"));
5379		return 1;
5380		}
5381
5382		if (!removeKernelPath && !newKernelPath && !displayDefault
5383		&& !defaultKernel && !kernelInfo && !bootloaderProbe
5384		&& !updateKernelPath && !removeMBKernel && !displayDefaultIndex
5385		&& !displayDefaultTitle && (defaultIndex == -1)) {
5386		fprintf(stderr, _("grubby: no action specified\n"));
5387		return 1;
5388		}
5389
5390		flags |= badImageOkay ? GRUBBY_BADIMAGE_OKAY : 0;
5391
5392		if (cfi->needsBootPrefix) {
5393		if (!bootPrefix) {
5394		bootPrefix = findBootPrefix();
5395		if (!bootPrefix)
5396		return 1;
5397		} else {
5398		/* this shouldn't end with a / */
5399		if (bootPrefix[strlen(bootPrefix) - 1] == '/')
5400		bootPrefix[strlen(bootPrefix) - 1] = '\0';
5401		}
5402		} else {
5403		bootPrefix = "";
5404		}
5405
5406		if (!cfi->mbAllowExtraInitRds && extraInitrdCount > 0) {
5407		fprintf(stderr,
5408		_("grubby: %s doesn't allow multiple initrds\n"),
5409		cfi->defaultConfig);
5410		return 1;
5411		}
5412
5413		if (bootloaderProbe) {
5414		int lrc = 0, grc = 0, gr2c = 0, extrc = 0, yrc = 0, erc = 0;
5415		struct grubConfig *lconfig, *gconfig, *yconfig, *econfig;
5416
5417		const char *grub2config = grub2FindConfig(&grub2ConfigType);
5418		if (grub2config) {
5419		gconfig = readConfig(grub2config, &grub2ConfigType);
5420		if (!gconfig)
5421		gr2c = 1;
5422		else
5423		gr2c = checkForGrub2(gconfig);
5424		}
5425
5426		const char *grubconfig = grubFindConfig(&grubConfigType);
5427		if (!access(grubconfig, F_OK)) {
5428		gconfig = readConfig(grubconfig, &grubConfigType);
5429		if (!gconfig)
5430		grc = 1;
5431		else
5432		grc = checkForGrub(gconfig);
5433		}
5434
5435		if (!access(liloConfigType.defaultConfig, F_OK)) {
5436		lconfig =
5437		readConfig(liloConfigType.defaultConfig,
5438		&liloConfigType);
5439		if (!lconfig)
5440		lrc = 1;
5441		else
5442		lrc = checkForLilo(lconfig);
5443		}
5444
5445		if (!access(eliloConfigType.defaultConfig, F_OK)) {
5446		econfig = readConfig(eliloConfigType.defaultConfig,
5447		&eliloConfigType);
5448		if (!econfig)
5449		erc = 1;
5450		else
5451		erc = checkForElilo(econfig);
5452		}
5453
5454		if (!access(extlinuxConfigType.defaultConfig, F_OK)) {
5455		lconfig =
5456		readConfig(extlinuxConfigType.defaultConfig,
5457		&extlinuxConfigType);
5458		if (!lconfig)
5459		extrc = 1;
5460		else
5461		extrc = checkForExtLinux(lconfig);
5462		}
5463
5464		if (!access(yabootConfigType.defaultConfig, F_OK)) {
5465		yconfig = readConfig(yabootConfigType.defaultConfig,
5466		&yabootConfigType);
5467		if (!yconfig)
5468		yrc = 1;
5469		else
5470		yrc = checkForYaboot(yconfig);
5471		}
5472
5473		if (lrc == 1 || grc == 1 || gr2c == 1 || extrc == 1 || yrc == 1
5474		|| erc == 1)
5475		return 1;
5476
5477		if (lrc == 2)
5478		printf("lilo\n");
5479		if (gr2c == 2)
5480		printf("grub2\n");
5481		if (grc == 2)
5482		printf("grub\n");
5483		if (extrc == 2)
5484		printf("extlinux\n");
5485		if (yrc == 2)
5486		printf("yaboot\n");
5487		if (erc == 2)
5488		printf("elilo\n");
5489
5490		return 0;
5491		}
5492
5493		if (grubConfig == NULL) {
5494		printf("Could not find bootloader configuration file.\n");
5495		exit(1);
5496		}
5497
5498		config = readConfig(grubConfig, cfi);
5499		if (!config)
5500		return 1;
5501
5502		if (displayDefault) {
5503		struct singleLine *line;
5504		struct singleEntry *entry;
5505		size_t rs;
5506
5507		if (config->defaultImage == NO_DEFAULT_ENTRY)
5508		return 0;
5509		if (config->defaultImage == DEFAULT_SAVED_GRUB2 &&
5510		cfi->defaultIsSaved)
5511		config->defaultImage = FIRST_ENTRY_INDEX;
5512		entry = findEntryByIndex(config, config->defaultImage);
5513		if (!entry)
5514		return 0;
5515		if (!suitableImage(entry, bootPrefix, 0, flags))
5516		return 0;
5517
5518		line =
5519		getLineByType(LT_KERNEL | LT_HYPER | LT_KERNEL_EFI |
5520		LT_KERNEL_16, entry->lines);
5521		if (!line)
5522		return 0;
5523
5524		rs = getRootSpecifier(line->elements[1].item);
5525		printf("%s%s\n", bootPrefix, line->elements[1].item + rs);
5526
5527		return 0;
5528
5529		} else if (displayDefaultTitle) {
5530		struct singleLine *line;
5531		struct singleEntry *entry;
5532
5533		if (config->defaultImage == NO_DEFAULT_ENTRY)
5534		return 0;
5535		if (config->defaultImage == DEFAULT_SAVED_GRUB2 &&
5536		cfi->defaultIsSaved)
5537		config->defaultImage = FIRST_ENTRY_INDEX;
5538		entry = findEntryByIndex(config, config->defaultImage);
5539		if (!entry)
5540		return 0;
5541
5542		if (!configureGrub2) {
5543		char *title;
5544		line = getLineByType(LT_TITLE, entry->lines);
5545		if (!line)
5546		return 0;
5547		title = extractTitle(config, line);
5548		if (!title)
5549		return 0;
5550		printf("%s\n", title);
5551		free(title);
5552		} else {
5553		char *title;
5554
5555		dbgPrintf
5556		("This is GRUB2, default title is embeded in menuentry\n");
5557		line = getLineByType(LT_MENUENTRY, entry->lines);
5558		if (!line)
5559		return 0;
5560		title = grub2ExtractTitle(line);
5561		if (title)
5562		printf("%s\n", title);
5563		}
5564		return 0;
5565
5566		} else if (displayDefaultIndex) {
5567		if (config->defaultImage == NO_DEFAULT_ENTRY)
5568		return 0;
5569		if (config->defaultImage == DEFAULT_SAVED_GRUB2 &&
5570		cfi->defaultIsSaved)
5571		config->defaultImage = FIRST_ENTRY_INDEX;
5572		printf("%i\n", config->defaultImage);
5573		return 0;
5574
5575		} else if (kernelInfo)
5576		return displayInfo(config, kernelInfo, bootPrefix);
5577
5578		if (copyDefault) {
5579		template = findTemplate(config, bootPrefix, NULL, 0, flags);
5580		if (!template)
5581		return 1;
5582		}
5583
5584		markRemovedImage(config, removeKernelPath, bootPrefix);
5585		markRemovedImage(config, removeMBKernel, bootPrefix);
5586		setDefaultImage(config, newKernelPath != NULL, defaultKernel,
5587		makeDefault, bootPrefix, flags, defaultIndex,
5588		newIndex);
5589		setFallbackImage(config, newKernelPath != NULL);
5590		if (updateImage(config, updateKernelPath, bootPrefix, newKernelArgs,
5591		removeArgs, newMBKernelArgs, removeMBKernelArgs))
5592		return 1;
5593		if (updateKernelPath && newKernelInitrd) {
5594		if (newMBKernel) {
5595		if (addMBInitrd(config, newMBKernel, updateKernelPath,
5596		bootPrefix, newKernelInitrd,
5597		newKernelTitle))
5598		return 1;
5599		} else {
5600		if (updateInitrd(config, updateKernelPath, bootPrefix,
5601		newKernelInitrd, newKernelTitle))
5602		return 1;
5603		}
5604		}
5605		if (addNewKernel(config, template, bootPrefix, newKernelPath,
5606		newKernelTitle, newKernelArgs, newKernelInitrd,
5607		(const char **)extraInitrds, extraInitrdCount,
5608		newMBKernel, newMBKernelArgs, newDevTreePath,
5609		newIndex))
5610		return 1;
5611
5612		if (numEntries(config) == 0) {
5613		fprintf(stderr,
5614		_("grubby: doing this would leave no kernel entries. "
5615		"Not writing out new config.\n"));
5616		return 1;
5617		}
5618
5619	if (!outputFile)	if (!outputFile)
5620	outputFile = grubConfig;	outputFile = (char *)grubConfig;
5621
5622	return writeConfig(config, outputFile, bootPrefix);	return writeConfig(config, outputFile, bootPrefix);
5623	}	}

---

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Legend: Removed from v.1694   changed lines   Added in v.3139