Diff of /trunk/grubby/grubby.c

Parent Directory | Revision Log | Patch

	revision 1692 by niro, Fri Feb 17 23:14:54 2012 UTC	revision 3153 by niro, Tue Jul 7 11:28:38 2020 UTC
#	Line 36	Line 36
36	#include <signal.h>	#include <signal.h>
37	#include <blkid/blkid.h>	#include <blkid/blkid.h>
38
39		#include "log.h"
40
41		#ifndef DEBUG
42	#define DEBUG 0	#define DEBUG 0
43		#endif
44
45	#if DEBUG	#if DEBUG
46	#define dbgPrintf(format, args...) fprintf(stderr, format , ## args)	#define dbgPrintf(format, args...) fprintf(stderr, format , ## args)
#	Line 44	Line 48
48	#define dbgPrintf(format, args...)	#define dbgPrintf(format, args...)
49	#endif	#endif
50
51		int debug = 0; /* Currently just for template debugging */
52
53	#define _(A) (A)	#define _(A) (A)
54
55	#define MAX_EXTRA_INITRDS  16 /* code segment checked by --bootloader-probe */	#define MAX_EXTRA_INITRDS  16 /* code segment checked by --bootloader-probe */
56	#define CODE_SEG_SIZE  128 /* code segment checked by --bootloader-probe */	#define CODE_SEG_SIZE  128 /* code segment checked by --bootloader-probe */
57
58		#define NOOP_OPCODE 0x90
59		#define JMP_SHORT_OPCODE 0xeb
60
61		int isEfi = 0;
62
63		#if defined(__aarch64__)
64		#define isEfiOnly 1
65		#else
66		#define isEfiOnly 0
67		#endif
68
69		char *saved_command_line = NULL;
70
71		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 99  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 entrySeparator;	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	.entrySeparator = 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		int result_len = 0;
486		for (; i < line->numElements; ++i) {
487		current = line->elements[i].item;
488		current_len = strlen(current);
489		current_indent = line->elements[i].indent;
490		current_indent_len = strlen(current_indent);
491
492		memcpy(result + result_len, current_indent, current_indent_len);
493		result_len += current_indent_len;
494
495		if (current[current_len - 1] != quote_char) {
496		memcpy(result + result_len, current_indent,
497		current_indent_len);
498		result_len += current_len;
499		} else {
500		memcpy(result + result_len, current_indent,
501		current_indent_len);
502		result_len += (current_len - 1);
503		break;
504		}
505		}
506		result[result_len] = '\0';
507		return result;
508		}
509
510		struct configFileInfo grub2ConfigType = {
511		.findConfig = grub2FindConfig,
512		.getEnv = grub2GetEnv,
513		.setEnv = grub2SetEnv,
514		.keywords = grub2Keywords,
515		.defaultIsIndex = 1,
516		.defaultSupportSaved = 1,
517		.defaultIsVariable = 1,
518		.entryStart = LT_MENUENTRY,
519		.entryEnd = LT_ENTRY_END,
520		.titlePosition = 1,
521		.needsBootPrefix = 1,
522		.mbHyperFirst = 1,
523		.mbInitRdIsModule = 1,
524		.mbAllowExtraInitRds = 1,
525	};	};
526
527	struct keywordTypes yabootKeywords[] = {	struct keywordTypes yabootKeywords[] = {
528	{ "label",    LT_TITLE,    '=' },	{"label", LT_TITLE, '='},
529	{ "root",    LT_ROOT,    '=' },	{"root", LT_ROOT, '='},
530	{ "default",    LT_DEFAULT,    '=' },	{"default", LT_DEFAULT, '='},
531	{ "image",    LT_KERNEL,    '=' },	{"image", LT_KERNEL, '='},
532	{ "bsd",    LT_GENERIC,    '=' },	{"bsd", LT_GENERIC, '='},
533	{ "macos",    LT_GENERIC,    '=' },	{"macos", LT_GENERIC, '='},
534	{ "macosx",    LT_GENERIC,    '=' },	{"macosx", LT_GENERIC, '='},
535	{ "magicboot",  LT_GENERIC,    '=' },	{"magicboot", LT_GENERIC, '='},
536	{ "darwin",    LT_GENERIC,    '=' },	{"darwin", LT_GENERIC, '='},
537	{ "timeout",    LT_GENERIC,    '=' },	{"timeout", LT_GENERIC, '='},
538	{ "install",    LT_GENERIC,    '=' },	{"install", LT_GENERIC, '='},
539	{ "fstype",    LT_GENERIC,    '=' },	{"fstype", LT_GENERIC, '='},
540	{ "hfstype",    LT_GENERIC,    '=' },	{"hfstype", LT_GENERIC, '='},
541	{ "delay",    LT_GENERIC,    '=' },	{"delay", LT_GENERIC, '='},
542	{ "defaultos",  LT_GENERIC,     '=' },	{"defaultos", LT_GENERIC, '='},
543	{ "init-message", LT_GENERIC,   '=' },	{"init-message", LT_GENERIC, '='},
544	{ "enablecdboot", LT_GENERIC,   ' ' },	{"enablecdboot", LT_GENERIC, ' '},
545	{ "enableofboot", LT_GENERIC,   ' ' },	{"enableofboot", LT_GENERIC, ' '},
546	{ "enablenetboot", LT_GENERIC,  ' ' },	{"enablenetboot", LT_GENERIC, ' '},
547	{ "nonvram",    LT_GENERIC,    ' ' },	{"nonvram", LT_GENERIC, ' '},
548	{ "hide",    LT_GENERIC,    ' ' },	{"hide", LT_GENERIC, ' '},
549	{ "protect",    LT_GENERIC,    ' ' },	{"protect", LT_GENERIC, ' '},
550	{ "nobless",    LT_GENERIC,    ' ' },	{"nobless", LT_GENERIC, ' '},
551	{ "nonvram",    LT_GENERIC,    ' ' },	{"nonvram", LT_GENERIC, ' '},
552	{ "brokenosx",  LT_GENERIC,    ' ' },	{"brokenosx", LT_GENERIC, ' '},
553	{ "usemount",   LT_GENERIC,    ' ' },	{"usemount", LT_GENERIC, ' '},
554	{ "mntpoint",   LT_GENERIC,    '=' },	{"mntpoint", LT_GENERIC, '='},
555	{ "partition",  LT_GENERIC,    '=' },	{"partition", LT_GENERIC, '='},
556	{ "device",    LT_GENERIC,    '=' },	{"device", LT_GENERIC, '='},
557	{ "fstype",    LT_GENERIC,    '=' },	{"fstype", LT_GENERIC, '='},
558	{ "initrd",    LT_INITRD,    '=', ';' },	{"initrd", LT_INITRD, '=', ';'},
559	{ "append",    LT_KERNELARGS,  '=' },	{"append", LT_KERNELARGS, '='},
560	{ "boot",    LT_BOOT,    '=' },	{"boot", LT_BOOT, '='},
561	{ "lba",    LT_LBA,    ' ' },	{"lba", LT_LBA, ' '},
562	{ NULL,    0, 0 },	{NULL, 0, 0},
563	};	};
564
565	struct keywordTypes liloKeywords[] = {	struct keywordTypes liloKeywords[] = {
566	{ "label",    LT_TITLE,    '=' },	{"label", LT_TITLE, '='},
567	{ "root",    LT_ROOT,    '=' },	{"root", LT_ROOT, '='},
568	{ "default",    LT_DEFAULT,    '=' },	{"default", LT_DEFAULT, '='},
569	{ "image",    LT_KERNEL,    '=' },	{"image", LT_KERNEL, '='},
570	{ "other",    LT_OTHER,    '=' },	{"other", LT_OTHER, '='},
571	{ "initrd",    LT_INITRD,    '=' },	{"initrd", LT_INITRD, '='},
572	{ "append",    LT_KERNELARGS,  '=' },	{"append", LT_KERNELARGS, '='},
573	{ "boot",    LT_BOOT,    '=' },	{"boot", LT_BOOT, '='},
574	{ "lba",    LT_LBA,    ' ' },	{"lba", LT_LBA, ' '},
575	{ NULL,    0, 0 },	{NULL, 0, 0},
576	};	};
577
578	struct keywordTypes eliloKeywords[] = {	struct keywordTypes eliloKeywords[] = {
579	{ "label",    LT_TITLE,    '=' },	{"label", LT_TITLE, '='},
580	{ "root",    LT_ROOT,    '=' },	{"root", LT_ROOT, '='},
581	{ "default",    LT_DEFAULT,    '=' },	{"default", LT_DEFAULT, '='},
582	{ "image",    LT_KERNEL,    '=' },	{"image", LT_KERNEL, '='},
583	{ "initrd",    LT_INITRD,    '=' },	{"initrd", LT_INITRD, '='},
584	{ "append",    LT_KERNELARGS,  '=' },	{"append", LT_KERNELARGS, '='},
585	{ "vmm",    LT_HYPER,       '=' },	{"vmm", LT_HYPER, '='},
586	{ NULL,    0, 0 },	{NULL, 0, 0},
587	};	};
588
589	struct keywordTypes siloKeywords[] = {	struct keywordTypes siloKeywords[] = {
590	{ "label",    LT_TITLE,    '=' },	{"label", LT_TITLE, '='},
591	{ "root",    LT_ROOT,    '=' },	{"root", LT_ROOT, '='},
592	{ "default",    LT_DEFAULT,    '=' },	{"default", LT_DEFAULT, '='},
593	{ "image",    LT_KERNEL,    '=' },	{"image", LT_KERNEL, '='},
594	{ "other",    LT_OTHER,    '=' },	{"other", LT_OTHER, '='},
595	{ "initrd",    LT_INITRD,    '=' },	{"initrd", LT_INITRD, '='},
596	{ "append",    LT_KERNELARGS,  '=' },	{"append", LT_KERNELARGS, '='},
597	{ "boot",    LT_BOOT,    '=' },	{"boot", LT_BOOT, '='},
598	{ NULL,    0, 0 },	{NULL, 0, 0},
599	};	};
600
601	struct keywordTypes ziplKeywords[] = {	struct keywordTypes ziplKeywords[] = {
602	{ "target",     LT_BOOTROOT,    '=' },	{"target", LT_BOOTROOT, '='},
603	{ "image",      LT_KERNEL,      '=' },	{"image", LT_KERNEL, '='},
604	{ "ramdisk",    LT_INITRD,      '=' },	{"ramdisk", LT_INITRD, '='},
605	{ "parameters", LT_KERNELARGS,  '=' },	{"parameters", LT_KERNELARGS, '='},
606	{ "default",    LT_DEFAULT,     '=' },	{"default", LT_DEFAULT, '='},
607	{ NULL,         0, 0 },	{NULL, 0, 0},
608	};	};
609
610	struct keywordTypes extlinuxKeywords[] = {	struct keywordTypes extlinuxKeywords[] = {
611	{ "label",    LT_TITLE,    ' ' },	{"label", LT_TITLE, ' '},
612	{ "root",    LT_ROOT,    ' ' },	{"root", LT_ROOT, ' '},
613	{ "default",    LT_DEFAULT,    ' ' },	{"default", LT_DEFAULT, ' '},
614	{ "kernel",    LT_KERNEL,    ' ' },	{"kernel", LT_KERNEL, ' '},
615	{ "initrd",    LT_INITRD,      ' ', ',' },	{"initrd", LT_INITRD, ' ', ','},
616	{ "append",    LT_KERNELARGS,  ' ' },	{"append", LT_KERNELARGS, ' '},
617	{ "prompt",     LT_UNKNOWN,     ' ' },	{"prompt", LT_UNKNOWN, ' '},
618	{ NULL,    0, 0 },	{"fdt", LT_DEVTREE, ' '},
619		{"fdtdir", LT_DEVTREE, ' '},
620		{NULL, 0, 0},
621	};	};
622
623	int useextlinuxmenu;	int useextlinuxmenu;
624	struct configFileInfo eliloConfigType = {	struct configFileInfo eliloConfigType = {
625	.defaultConfig = "/boot/efi/EFI/redhat/elilo.conf",	.defaultConfig = "/boot/efi/EFI/redhat/elilo.conf",
626	.keywords = eliloKeywords,	.keywords = eliloKeywords,
627	.entrySeparator = LT_KERNEL,	.entryStart = LT_KERNEL,
628	.needsBootPrefix = 1,	.needsBootPrefix = 1,
629	.argsInQuotes = 1,	.argsInQuotes = 1,
630	.mbConcatArgs = 1,	.mbConcatArgs = 1,
631		.titlePosition = 1,
632	};	};
633
634	struct configFileInfo liloConfigType = {	struct configFileInfo liloConfigType = {
635	.defaultConfig = "/etc/lilo.conf",	.defaultConfig = "/etc/lilo.conf",
636	.keywords = liloKeywords,	.keywords = liloKeywords,
637	.entrySeparator = LT_KERNEL,	.entryStart = LT_KERNEL,
638	.argsInQuotes = 1,	.argsInQuotes = 1,
639	.maxTitleLength = 15,	.maxTitleLength = 15,
640		.titlePosition = 1,
641	};	};
642
643	struct configFileInfo yabootConfigType = {	struct configFileInfo yabootConfigType = {
644	.defaultConfig = "/etc/yaboot.conf",	.defaultConfig = "/etc/yaboot.conf",
645	.keywords = yabootKeywords,	.keywords = yabootKeywords,
646	.entrySeparator = LT_KERNEL,	.entryStart = LT_KERNEL,
647	.needsBootPrefix = 1,	.needsBootPrefix = 1,
648	.argsInQuotes = 1,	.argsInQuotes = 1,
649	.maxTitleLength = 15,	.maxTitleLength = 15,
650	.mbAllowExtraInitRds = 1,	.mbAllowExtraInitRds = 1,
651		.titlePosition = 1,
652	};	};
653
654	struct configFileInfo siloConfigType = {	struct configFileInfo siloConfigType = {
655	.defaultConfig = "/etc/silo.conf",	.defaultConfig = "/etc/silo.conf",
656	.keywords = siloKeywords,	.keywords = siloKeywords,
657	.entrySeparator = LT_KERNEL,	.entryStart = LT_KERNEL,
658	.needsBootPrefix = 1,	.needsBootPrefix = 1,
659	.argsInQuotes = 1,	.argsInQuotes = 1,
660	.maxTitleLength = 15,	.maxTitleLength = 15,
661		.titlePosition = 1,
662	};	};
663
664	struct configFileInfo ziplConfigType = {	struct configFileInfo ziplConfigType = {
665	.defaultConfig = "/etc/zipl.conf",	.defaultConfig = "/etc/zipl.conf",
666	.keywords = ziplKeywords,	.keywords = ziplKeywords,
667	.entrySeparator = LT_TITLE,	.entryStart = LT_TITLE,
668	.argsInQuotes = 1,	.argsInQuotes = 1,
669	.titleBracketed = 1,	.titleBracketed = 1,
670	};	};
671
672	struct configFileInfo extlinuxConfigType = {	struct configFileInfo extlinuxConfigType = {
673	.defaultConfig = "/boot/extlinux/extlinux.conf",	.defaultConfig = "/boot/extlinux/extlinux.conf",
674	.keywords = extlinuxKeywords,	.keywords = extlinuxKeywords,
675	.entrySeparator = LT_TITLE,	.caseInsensitive = 1,
676	.needsBootPrefix = 1,	.entryStart = LT_TITLE,
677	.maxTitleLength = 255,	.needsBootPrefix = 1,
678	.mbAllowExtraInitRds = 1,	.maxTitleLength = 255,
679		.mbAllowExtraInitRds = 1,
680		.defaultIsUnquoted = 1,
681		.titlePosition = 1,
682	};	};
683
684	struct grubConfig {	struct grubConfig {
685	struct singleLine * theLines;	struct singleLine *theLines;
686	struct singleEntry * entries;	struct singleEntry *entries;
687	char * primaryIndent;	char *primaryIndent;
688	char * secondaryIndent;	char *secondaryIndent;
689	int defaultImage;    /* -1 if none specified -- this value is	int defaultImage; /* -1 if none specified -- this value is
690	* written out, overriding original */	* written out, overriding original */
691	int fallbackImage;    /* just like defaultImage */	int fallbackImage; /* just like defaultImage */
692	int flags;	int flags;
693	struct configFileInfo * cfi;	struct configFileInfo *cfi;
694		int isModified; /* assumes only one entry added
695		per invocation of grubby */
696	};	};
697
698	blkid_cache blkid;	blkid_cache blkid;
699
700	struct singleEntry * findEntryByIndex(struct grubConfig * cfg, int index);	struct singleEntry *findEntryByIndex(struct grubConfig *cfg, int index);
701	struct singleEntry * findEntryByPath(struct grubConfig * cfg,	struct singleEntry *findEntryByPath(struct grubConfig *cfg,
702	const char * path, const char * prefix,	const char *path, const char *prefix,
703	int * index);	int *index);
704	static int readFile(int fd, char ** bufPtr);	struct singleEntry *findEntryByTitle(struct grubConfig *cfg, char *title,
705	static void lineInit(struct singleLine * line);	int *index);
706	struct singleLine * lineDup(struct singleLine * line);	static int readFile(int fd, char **bufPtr);
707	static void lineFree(struct singleLine * line);	static void lineInit(struct singleLine *line);
708	static int lineWrite(FILE * out, struct singleLine * line,	struct singleLine *lineDup(struct singleLine *line);
709	struct configFileInfo * cfi);	static void lineFree(struct singleLine *line);
710	static int getNextLine(char ** bufPtr, struct singleLine * line,	static int lineWrite(FILE * out, struct singleLine *line,
711	struct configFileInfo * cfi);	struct configFileInfo *cfi);
712	static char * getRootSpecifier(char * str);	static int getNextLine(char **bufPtr, struct singleLine *line,
713	static void insertElement(struct singleLine * line,	struct configFileInfo *cfi);
714	const char * item, int insertHere,	static size_t getRootSpecifier(const char *str);
715	struct configFileInfo * cfi);	static void requote(struct singleLine *line, struct configFileInfo *cfi);
716	static void removeElement(struct singleLine * line, int removeHere);	static void insertElement(struct singleLine *line,
717	static struct keywordTypes * getKeywordByType(enum lineType_e type,	const char *item, int insertHere,
718	struct configFileInfo * cfi);	struct configFileInfo *cfi);
719	static enum lineType_e getTypeByKeyword(char * keyword,	static void removeElement(struct singleLine *line, int removeHere);
720	struct configFileInfo * cfi);	static struct keywordTypes *getKeywordByType(enum lineType_e type,
721	static struct singleLine * getLineByType(enum lineType_e type,	struct configFileInfo *cfi);
722	struct singleLine * line);	static enum lineType_e getTypeByKeyword(char *keyword,
723	static int checkForExtLinux(struct grubConfig * config);	struct configFileInfo *cfi);
724	struct singleLine * addLineTmpl(struct singleEntry * entry,	static struct singleLine *getLineByType(enum lineType_e type,
725	struct singleLine * tmplLine,	struct singleLine *line);
726	struct singleLine * prevLine,	static int checkForExtLinux(struct grubConfig *config);
727	const char * val,	struct singleLine *addLineTmpl(struct singleEntry *entry,
728	struct configFileInfo * cfi);	struct singleLine *tmplLine,
729	struct singleLine *  addLine(struct singleEntry * entry,	struct singleLine *prevLine,
730	struct configFileInfo * cfi,	const char *val, struct configFileInfo *cfi);
731	enum lineType_e type, char * defaultIndent,	struct singleLine *addLine(struct singleEntry *entry,
732	const char * val);	struct configFileInfo *cfi,
733		enum lineType_e type, char *defaultIndent,
734		const char *val);
735
736	static char * sdupprintf(const char *format, ...)	static char *sdupprintf(const char *format, ...)
737	#ifdef __GNUC__	#ifdef __GNUC__
738	__attribute__ ((format (printf, 1, 2)));	__attribute__ ((format(printf, 1, 2)));
739	#else	#else
740	;	;
741	#endif	#endif
742
743	static char * sdupprintf(const char *format, ...) {	static char *sdupprintf(const char *format, ...)
744	char *buf = NULL;	{
745	char c;	char *buf = NULL;
746	va_list args;	char c;
747	size_t size = 0;	va_list args;
748	va_start(args, format);	size_t size = 0;
749		va_start(args, format);
750	/* XXX requires C99 vsnprintf behavior */
751	size = vsnprintf(&c, 1, format, args) + 1;	/* XXX requires C99 vsnprintf behavior */
752	if (size == -1) {	size = vsnprintf(&c, 1, format, args) + 1;
753	printf("ERROR: vsnprintf behavior is not C99\n");	if (size == -1) {
754	abort();	printf("ERROR: vsnprintf behavior is not C99\n");
755	}	abort();
756		}
757
758	va_end(args);	va_end(args);
759	va_start(args, format);	va_start(args, format);
760
761	buf = malloc(size);	buf = malloc(size);
762	if (buf == NULL)	if (buf == NULL)
763	return NULL;	return NULL;
764	vsnprintf(buf, size, format, args);	vsnprintf(buf, size, format, args);
765	va_end (args);	va_end(args);
766
767	return buf;	return buf;
768	}	}
769
770	static struct keywordTypes * getKeywordByType(enum lineType_e type,	static inline int
771	struct configFileInfo * cfi) {	kwcmp(struct keywordTypes *kw, const char * label, int case_insensitive)
772	struct keywordTypes * kw;	{
773	for (kw = cfi->keywords; kw->key; kw++) {	int kwl = strlen(kw->key);
774	if (kw->type == type)	int ll = strlen(label);
775	return kw;	int rc;
776		int (*snc)(const char *s1, const char *s2, size_t n) =
777		case_insensitive ? strncasecmp : strncmp;
778		int (*sc)(const char *s1, const char *s2) =
779		case_insensitive ? strcasecmp : strcmp;
780
781		rc = snc(kw->key, label, kwl);
782		if (rc)
783		return rc;
784
785		for (int i = kwl; i < ll; i++) {
786		if (isspace(label[i]))
787		return 0;
788		if (kw->separatorChar && label[i] == kw->separatorChar)
789		return 0;
790		else if (kw->nextChar && label[i] == kw->nextChar)
791		return 0;
792		return sc(kw->key+kwl, label+kwl);
793	}	}
794	return NULL;	return 0;
795	}	}
796
797	static char * getpathbyspec(char *device) {	static enum lineType_e preferredLineType(enum lineType_e type,
798	if (!blkid)	struct configFileInfo *cfi)
799	blkid_get_cache(&blkid, NULL);	{
800		if (isEfi && cfi == &grub2ConfigType) {
801	return blkid_get_devname(blkid, device, NULL);	switch (type) {
802		case LT_KERNEL:
803		return isEfiOnly ? LT_KERNEL : LT_KERNEL_EFI;
804		case LT_INITRD:
805		return isEfiOnly ? LT_INITRD : LT_INITRD_EFI;
806		default:
807		return type;
808		}
809		#if defined(__i386__) || defined(__x86_64__)
810		} else if (cfi == &grub2ConfigType) {
811		switch (type) {
812		case LT_KERNEL:
813		return LT_KERNEL_16;
814		case LT_INITRD:
815		return LT_INITRD_16;
816		default:
817		return type;
818		}
819		#endif
820		}
821		return type;
822	}	}
823
824	static char * getuuidbydev(char *device) {	static struct keywordTypes *getKeywordByType(enum lineType_e type,
825	if (!blkid)	struct configFileInfo *cfi)
826	blkid_get_cache(&blkid, NULL);	{
827		for (struct keywordTypes * kw = cfi->keywords; kw->key; kw++) {
828	return blkid_get_tag_value(blkid, "UUID", device);	if (kw->type == type)
829		return kw;
830		}
831		return NULL;
832	}	}
833
834	static enum lineType_e getTypeByKeyword(char * keyword,	static char *getKeyByType(enum lineType_e type, struct configFileInfo *cfi)
835	struct configFileInfo * cfi) {	{
836	struct keywordTypes * kw;	struct keywordTypes *kt = getKeywordByType(type, cfi);
837	for (kw = cfi->keywords; kw->key; kw++) {	if (kt)
838	if (!strcmp(keyword, kw->key))	return kt->key;
839	return kw->type;	return "unknown";
	}
	return LT_UNKNOWN;
840	}	}
841
842	static struct singleLine * getLineByType(enum lineType_e type,	static char *getpathbyspec(char *device)
843	struct singleLine * line) {	{
844	dbgPrintf("getLineByType(%d): ", type);	if (!blkid)
845	for (; line; line = line->next) {	blkid_get_cache(&blkid, NULL);
846	dbgPrintf("%d:%s ", line->type,
847	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;
848	}	}
849
850	static int isBracketedTitle(struct singleLine * line) {	static char *getuuidbydev(char *device)
851	if (line->numElements == 1 && *line->elements[0].item == '[') {	{
852	int len = strlen(line->elements[0].item);	if (!blkid)
853	if (*(line->elements[0].item + len - 1) == ']') {	blkid_get_cache(&blkid, NULL);
854	/* FIXME: this is a hack... */
855	if (strcmp(line->elements[0].item, "[defaultboot]")) {	return blkid_get_tag_value(blkid, "UUID", device);
	return 1;
	}
	}
	}
	return 0;
856	}	}
857
858	static int isEntrySeparator(struct singleLine * line,	static enum lineType_e getTypeByKeyword(char *keyword,
859	struct configFileInfo * cfi) {	struct configFileInfo *cfi)
860	return line->type == cfi->entrySeparator || line->type == LT_OTHER ||	{
861	(cfi->titleBracketed && isBracketedTitle(line));	for (struct keywordTypes * kw = cfi->keywords; kw->key; kw++) {
862		if (!kwcmp(kw, keyword, cfi->caseInsensitive))
863		return kw->type;
864		}
865		return LT_UNKNOWN;
866	}	}
867
868	/* extract the title from within brackets (for zipl) */	static struct singleLine *getLineByType(enum lineType_e type,
869	static char * extractTitle(struct singleLine * line) {	struct singleLine *line)
870	/* bracketed title... let's extract it (leaks a byte) */	{
871	char * title;	dbgPrintf("getLineByType(%d): ", type);
872	title = strdup(line->elements[0].item);	for (; line; line = line->next) {
873	title++;	dbgPrintf("%d:%s ", line->type,
874	*(title + strlen(title) - 1) = '\0';	line->numElements ? line->elements[0].
875	return title;	item : "(empty)");
876	}	if (line->type & type)
877		break;
878	static int readFile(int fd, char ** bufPtr) {	}
879	int alloced = 0, size = 0, i = 0;	dbgPrintf(line ? "\n" : " (failed)\n");
880	char * buf = NULL;	return line;
881		}
	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;
	}
882
883	buf = realloc(buf, size + 2);	static int isBracketedTitle(struct singleLine *line)
884	if (size == 0)	{
885	buf[size++] = '\n';	if (line->numElements == 1 && *line->elements[0].item == '[') {
886	else	int len = strlen(line->elements[0].item);
887	if (buf[size - 1] != '\n')	if (*(line->elements[0].item + len - 1) == ']') {
888	buf[size++] = '\n';	/* FIXME: this is a hack... */
889	buf[size] = '\0';	if (strcmp(line->elements[0].item, "[defaultboot]")) {
890		return 1;
891		}
892		}
893		}
894		return 0;
895		}
896
897	*bufPtr = buf;	static int isEntryStart(struct singleLine *line, struct configFileInfo *cfi)
898		{
899		return line->type == cfi->entryStart || line->type == LT_OTHER ||
900		(cfi->titleBracketed && isBracketedTitle(line));
901		}
902
903	return 0;	/* extract the title from within brackets (for zipl) */
904		static char *extractTitle(struct grubConfig *cfg, struct singleLine *line)
905		{
906		/* bracketed title... let's extract it */
907		char *title = NULL;
908		if (line->type == LT_TITLE) {
909		char *tmp = line->elements[cfg->cfi->titlePosition].item;
910		if (cfg->cfi->titleBracketed) {
911		tmp++;
912		title = strdup(tmp);
913		*(title + strlen(title) - 1) = '\0';
914		} else {
915		title = strdup(tmp);
916		}
917		} else if (line->type == LT_MENUENTRY)
918		title = strdup(line->elements[1].item);
919		else
920		return NULL;
921		return title;
922	}	}
923
924	static void lineInit(struct singleLine * line) {	static int readFile(int fd, char **bufPtr)
925	line->indent = NULL;	{
926	line->elements = NULL;	int alloced = 0, size = 0, i = 0;
927	line->numElements = 0;	char *buf = NULL;
	line->next = NULL;
	}
	struct singleLine * lineDup(struct singleLine * line) {
	int i;
	struct singleLine * newLine = malloc(sizeof(*newLine));
	newLine->indent = strdup(line->indent);
	newLine->next = NULL;
	newLine->type = line->type;
	newLine->numElements = line->numElements;
	newLine->elements = malloc(sizeof(*newLine->elements) *
	newLine->numElements);
	for (i = 0; i < newLine->numElements; i++) {
	newLine->elements[i].indent = strdup(line->elements[i].indent);
	newLine->elements[i].item = strdup(line->elements[i].item);
	}
928
929	return newLine;	do {
930	}	size += i;
931		if ((size + 1024) > alloced) {
932		alloced += 4096;
933		buf = realloc(buf, alloced + 1);
934		}
935		} while ((i = read(fd, buf + size, 1024)) > 0);
936
937		if (i < 0) {
938		fprintf(stderr, _("error reading input: %s\n"),
939		strerror(errno));
940		free(buf);
941		return 1;
942		}
943
944	static void lineFree(struct singleLine * line) {	buf = realloc(buf, size + 2);
945	int i;	if (size == 0)
946		buf[size++] = '\n';
947		else if (buf[size - 1] != '\n')
948		buf[size++] = '\n';
949		buf[size] = '\0';
950
951	if (line->indent) free(line->indent);	*bufPtr = buf;
952
953	for (i = 0; i < line->numElements; i++) {	return 0;
954	free(line->elements[i].item);	}
	free(line->elements[i].indent);
	}
955
956	if (line->elements) free(line->elements);	static void lineInit(struct singleLine *line)
957	lineInit(line);	{
958		line->type = LT_UNIDENTIFIED;
959		line->indent = NULL;
960		line->elements = NULL;
961		line->numElements = 0;
962		line->next = NULL;
963	}	}
964
965	static int lineWrite(FILE * out, struct singleLine * line,	struct singleLine *lineDup(struct singleLine *line)
966	struct configFileInfo * cfi) {	{
967	int i;	struct singleLine *newLine = malloc(sizeof(*newLine));
968
969	if (fprintf(out, "%s", line->indent) == -1) return -1;	newLine->indent = strdup(line->indent);
970		newLine->next = NULL;
971		newLine->type = line->type;
972		newLine->numElements = line->numElements;
973		newLine->elements = malloc(sizeof(*newLine->elements) *
974		newLine->numElements);
975
976	for (i = 0; i < line->numElements; i++) {	for (int i = 0; i < newLine->numElements; i++) {
977	if (i == 1 && line->type == LT_KERNELARGS && cfi->argsInQuotes)	newLine->elements[i].indent = strdup(line->elements[i].indent);
978	if (fputc('"', out) == EOF) return -1;	newLine->elements[i].item = strdup(line->elements[i].item);
979		}
980
981	if (fprintf(out, "%s", line->elements[i].item) == -1) return -1;	return newLine;
982	if (i < line->numElements - 1)	}
	if (fprintf(out, "%s", line->elements[i].indent) == -1) return -1;
	}
983
984	if (line->type == LT_KERNELARGS && cfi->argsInQuotes)	static void lineFree(struct singleLine *line)
985	if (fputc('"', out) == EOF) return -1;	{
986		if (line->indent)
987		free(line->indent);
988
989	if (fprintf(out, "\n") == -1) return -1;	for (int i = 0; i < line->numElements; i++) {
990		free(line->elements[i].item);
991		free(line->elements[i].indent);
992		}
993
994	return 0;	if (line->elements)
995		free(line->elements);
996		lineInit(line);
997	}	}
998
999	/* we've guaranteed that the buffer ends w/ \n\0 */	static int lineWrite(FILE * out, struct singleLine *line,
1000	static int getNextLine(char ** bufPtr, struct singleLine * line,	struct configFileInfo *cfi)
1001	struct configFileInfo * cfi) {	{
1002	char * end;	if (fprintf(out, "%s", line->indent) == -1)
1003	char * start = *bufPtr;	return -1;
	char * chptr;
	int elementsAlloced = 0;
	struct lineElement * element;
	int first = 1;
1004
1005	lineFree(line);	for (int i = 0; i < line->numElements; i++) {
1006		/* Need to handle this, because we strip the quotes from
1007		* menuentry when read it. */
1008		if (line->type == LT_MENUENTRY && i == 1) {
1009		if (!isquote(*line->elements[i].item)) {
1010		int substring = 0;
1011		/* If the line contains nested quotes, we did
1012		* not strip the "interna" quotes and we must
1013		* use the right quotes again when writing
1014		* the updated file. */
1015		for (int j = i; j < line->numElements; j++) {
1016		if (strchr(line->elements[i].item, '\'')
1017		!= NULL) {
1018		substring = 1;
1019		fprintf(out, "\"%s\"",
1020		line->elements[i].item);
1021		break;
1022		}
1023		}
1024		if (!substring)
1025		fprintf(out, "\'%s\'",
1026		line->elements[i].item);
1027		} else {
1028		fprintf(out, "%s", line->elements[i].item);
1029		}
1030		fprintf(out, "%s", line->elements[i].indent);
1031
1032	end = strchr(start, '\n');	continue;
1033	*end = '\0';	}
	*bufPtr = end + 1;
1034
1035	for (chptr = start; *chptr && isspace(*chptr); chptr++) ;	if (i == 1 && line->type == LT_KERNELARGS && cfi->argsInQuotes)
1036		if (fputc('"', out) == EOF)
1037		return -1;
1038
1039		if (fprintf(out, "%s", line->elements[i].item) == -1)
1040		return -1;
1041		if (i < line->numElements - 1 || line->type == LT_SET_VARIABLE)
1042		if (fprintf(out, "%s", line->elements[i].indent) == -1)
1043		return -1;
1044		}
1045
1046		if (line->type == LT_KERNELARGS && cfi->argsInQuotes)
1047		if (fputc('"', out) == EOF)
1048		return -1;
1049
1050	line->indent = strndup(start, chptr - start);	if (fprintf(out, "\n") == -1)
1051	start = chptr;	return -1;
1052
1053	while (start < end) {	return 0;
1054	/* we know !isspace(*start) */	}
1055
1056	if (elementsAlloced == line->numElements) {	/* we've guaranteed that the buffer ends w/ \n\0 */
1057	elementsAlloced += 5;	static int getNextLine(char **bufPtr, struct singleLine *line,
1058	line->elements = realloc(line->elements,	struct configFileInfo *cfi)
1059	sizeof(*line->elements) * elementsAlloced);	{
1060	}	char *end;
1061		char *start = *bufPtr;
1062		char *chptr;
1063		int elementsAlloced = 0;
1064		struct lineElement *element;
1065		int first = 1;
1066
1067	element = line->elements + line->numElements;	lineFree(line);
1068
1069	chptr = start;	end = strchr(start, '\n');
1070	while (*chptr && !isspace(*chptr)) {	*end = '\0';
1071	if (first && *chptr == '=') break;	*bufPtr = end + 1;
	chptr++;
	}
	element->item = strndup(start, chptr - start);
	start = chptr;
1072
1073	/* lilo actually accepts the pathological case of append = " foo " */	for (chptr = start; *chptr && isspace(*chptr); chptr++) ;
	if (*start == '=')
	chptr = start + 1;
	else
	chptr = start;
	do {
	for (; *chptr && isspace(*chptr); chptr++);
	if (*chptr == '=')
	chptr = chptr + 1;
	} while (isspace(*chptr));
1074
1075	element->indent = strndup(start, chptr - start);	line->indent = strndup(start, chptr - start);
1076	start = chptr;	start = chptr;
1077
1078	line->numElements++;	while (start < end) {
1079	first = 0;	/* we know !isspace(*start) */
	}
1080
1081	if (!line->numElements)	if (elementsAlloced == line->numElements) {
1082	line->type = LT_WHITESPACE;	elementsAlloced += 5;
1083	else {	line->elements = realloc(line->elements,
1084	line->type = getTypeByKeyword(line->elements[0].item, cfi);	sizeof(*line->elements) *
1085	if (line->type == LT_UNKNOWN) {	elementsAlloced);
1086	/* zipl does [title] instead of something reasonable like all	}
	* the other boot loaders.  kind of ugly */
	if (cfi->titleBracketed && isBracketedTitle(line)) {
	line->type = LT_TITLE;
	}
	/* this is awkward, but we need to be able to handle keywords
	that begin with a # (specifically for #boot in grub.conf),
	but still make comments lines with no elements (everything
	stored in the indent */
	if (*line->elements[0].item == '#') {
	char * fullLine;
	int len;
	int i;
	len = strlen(line->indent);
	for (i = 0; i < line->numElements; i++)
	len += strlen(line->elements[i].item) +
	strlen(line->elements[i].indent);
1087
1088	fullLine = malloc(len + 1);	element = line->elements + line->numElements;
	strcpy(fullLine, line->indent);
	free(line->indent);
	line->indent = fullLine;
1089
1090	for (i = 0; i < line->numElements; i++) {	chptr = start;
1091	strcat(fullLine, line->elements[i].item);	while (*chptr && !isspace(*chptr)) {
1092	strcat(fullLine, line->elements[i].indent);	if (first && *chptr == '=')
1093	free(line->elements[i].item);	break;
1094	free(line->elements[i].indent);	chptr++;
1095	}	}
1096		if (line->type == LT_UNIDENTIFIED)
1097		line->type = getTypeByKeyword(start, cfi);
1098		element->item = strndup(start, chptr - start);
1099		start = chptr;
1100
1101		/* lilo actually accepts the pathological case of
1102		* append = " foo " */
1103		if (*start == '=')
1104		chptr = start + 1;
1105		else
1106		chptr = start;
1107
1108		do {
1109		for (; *chptr && isspace(*chptr); chptr++) ;
1110		if (*chptr == '=')
1111		chptr = chptr + 1;
1112		} while (isspace(*chptr));
1113
1114	line->type = LT_WHITESPACE;	element->indent = strndup(start, chptr - start);
1115	line->numElements = 0;	start = chptr;
	}
	} else {
	struct keywordTypes *kw;
1116
1117	kw = getKeywordByType(line->type, cfi);	line->numElements++;
1118		first = 0;
1119		}
1120
1121	/* space isn't the only separator, we need to split	if (!line->numElements)
1122	* elements up more	line->type = LT_WHITESPACE;
1123	*/	else {
1124	if (!isspace(kw->separatorChar)) {	line->type = getTypeByKeyword(line->elements[0].item, cfi);
1125	int i;	if (line->type == LT_UNKNOWN) {
1126	char indent[2] = "";	/* zipl does [title] instead of something reasonable
1127	indent[0] = kw->separatorChar;	* like all the other boot loaders.  kind of ugly */
1128	for (i = 1; i < line->numElements; i++) {	if (cfi->titleBracketed && isBracketedTitle(line)) {
1129	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];
1130	}	}
	line->numElements += numNewElements;
	p = line->elements[i].item;
	while (*p != '\0') {
1131
1132	while (*p != kw->separatorChar && *p != '\0') p++;	/* this is awkward, but we need to be able to handle
1133	if (*p == '\0') {	* keywords that begin with a # (specifically for
1134	break;	* #boot in grub.conf), but still make comments lines
1135		* with no elements (everything stored in the indent
1136		*/
1137		if (*line->elements[0].item == '#') {
1138		char *fullLine;
1139		int len;
1140
1141		len = strlen(line->indent);
1142		for (int i = 0; i < line->numElements; i++)
1143		len += strlen(line->elements[i].item) +
1144		strlen(line->elements[i].indent);
1145
1146		fullLine = malloc(len + 1);
1147		strcpy(fullLine, line->indent);
1148		free(line->indent);
1149		line->indent = fullLine;
1150
1151		for (int i = 0; i < line->numElements; i++) {
1152		strcat(fullLine,
1153		line->elements[i].item);
1154		strcat(fullLine,
1155		line->elements[i].indent);
1156		free(line->elements[i].item);
1157		free(line->elements[i].indent);
1158	}	}
1159
1160	free(line->elements[i].indent);	line->type = LT_WHITESPACE;
1161	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;
1162	}	}
1163	}	} else if (line->type == LT_INITRD) {
1164	}	struct keywordTypes *kw;
	}
	}
1165
1166	return 0;	kw = getKeywordByType(line->type, cfi);
	}
1167
1168	static struct grubConfig * readConfig(const char * inName,	/* space isn't the only separator, we need to split
1169	struct configFileInfo * cfi) {	* elements up more
1170	int in;	*/
1171	char * incoming = NULL, * head;	if (!isspace(kw->separatorChar)) {
1172	int rc;	char indent[2] = "";
1173	int sawEntry = 0;	indent[0] = kw->separatorChar;
1174	int movedLine = 0;	for (int i = 1; i < line->numElements; i++) {
1175	struct grubConfig * cfg;	char *p;
1176	struct singleLine * last = NULL, * line, * defaultLine = NULL;	int numNewElements;
1177	char * end;
1178	struct singleEntry * entry = NULL;	numNewElements = 0;
1179	int i, len;	p = line->elements[i].item;
1180	char * buf;	while (*p != '\0') {
1181		if (*p == kw->separatorChar)
1182	if (!strcmp(inName, "-")) {	numNewElements++;
1183	in = 0;	p++;
1184	} else {	}
1185	if ((in = open(inName, O_RDONLY)) < 0) {	if (line->numElements +
1186	fprintf(stderr, _("error opening %s for read: %s\n"),	numNewElements >= elementsAlloced) {
1187	inName, strerror(errno));	elementsAlloced +=
1188	return NULL;	numNewElements + 5;
1189	}	line->elements =
1190	}	realloc(line->elements,
1191		sizeof(*line->
1192		elements) *
1193		elementsAlloced);
1194		}
1195
1196	rc = readFile(in, &incoming);	for (int j = line->numElements; j > i;
1197	close(in);	j--) {
1198	if (rc) return NULL;	line->elements[j +
1199		numNewElements] =
1200	head = incoming;	line->elements[j];
1201	cfg = malloc(sizeof(*cfg));	}
1202	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);
1203
1204	if (getNextLine(&head, line, cfi)) {	p = line->elements[i].item;
1205	free(line);	while (*p != '\0') {
	/* XXX memory leak of everything in cfg */
	return NULL;
	}
	if (!sawEntry && line->numElements) {
	free(cfg->primaryIndent);
	cfg->primaryIndent = strdup(line->indent);
	} else if (line->numElements) {
	free(cfg->secondaryIndent);
	cfg->secondaryIndent = strdup(line->indent);
	}
	if (isEntrySeparator(line, cfi)) {
	sawEntry = 1;
	if (!entry) {
	cfg->entries = malloc(sizeof(*entry));
	entry = cfg->entries;
	} else {
	entry->next = malloc(sizeof(*entry));
	entry = entry->next;
	}
1206
1207	entry->skip = 0;	while (*p != kw->separatorChar
1208	entry->multiboot = 0;	&& *p != '\0')
1209	entry->lines = NULL;	p++;
1210	entry->next = NULL;	if (*p == '\0') {
1211	}	break;
1212		}
1213	if (line->type == LT_DEFAULT && line->numElements == 2) {
1214	cfg->flags &= ~GRUB_CONFIG_NO_DEFAULT;	line->elements[i + 1].indent =
1215	defaultLine = line;	line->elements[i].indent;
1216		line->elements[i].indent =
1217	} else if (line->type == LT_KERNEL) {	strdup(indent);
1218	/* if by some freak chance this is multiboot and the "module"	*p++ = '\0';
1219	* lines came earlier in the template, make sure to use LT_HYPER	i++;
1220	* instead of LT_KERNEL now	line->elements[i].item =
1221	*/	strdup(p);
1222	if (entry->multiboot)	}
1223	line->type = LT_HYPER;	}
1224		}
1225	} else if (line->type == LT_MBMODULE) {	} else if (line->type == LT_SET_VARIABLE) {
1226	/* go back and fix the LT_KERNEL line to indicate LT_HYPER	/* and if it's a "set blah=" we need to split it
1227	* instead, now that we know this is a multiboot entry.	* yet a third way to avoid rhbz# XXX FIXME :/
1228	* This only applies to grub, but that's the only place we	*/
1229	* should find LT_MBMODULE lines anyway.	char *eq;
1230	*/	int l;
1231	struct singleLine * l;	int numElements = line->numElements;
1232	for (l = entry->lines; l; l = l->next) {	struct lineElement *newElements;
1233	if (l->type == LT_HYPER)	eq = strchr(line->elements[1].item, '=');
1234	break;	if (!eq)
1235	else if (l->type == LT_KERNEL) {	return 0;
1236	l->type = LT_HYPER;	l = eq - line->elements[1].item;
1237	break;	if (eq[1] != 0)
1238	}	numElements++;
1239	}	newElements = calloc(numElements,sizeof (*newElements));
1240	entry->multiboot = 1;	memcpy(&newElements[0], &line->elements[0],
1241		sizeof (newElements[0]));
1242	} else if (line->type == LT_HYPER) {	newElements[1].item =
1243	entry->multiboot = 1;	strndup(line->elements[1].item, l);
1244		newElements[1].indent = "=";
1245	} else if (line->type == LT_FALLBACK && line->numElements == 2) {	*(eq++) = '\0';
1246	cfg->fallbackImage = strtol(line->elements[1].item, &end, 10);	newElements[2].item = strdup(eq);
1247	if (*end) cfg->fallbackImage = -1;	free(line->elements[1].item);
1248		if (line->elements[1].indent)
1249	} else if (line->type == LT_TITLE && line->numElements > 1) {	newElements[2].indent = line->elements[1].indent;
1250	/* make the title a single argument (undoing our parsing) */	for (int i = 2; i < line->numElements; i++) {
1251	len = 0;	newElements[i+1].item = line->elements[i].item;
1252	for (i = 1; i < line->numElements; i++) {	newElements[i+1].indent =
1253	len += strlen(line->elements[i].item);	line->elements[i].indent;
1254	len += strlen(line->elements[i].indent);	}
1255	}	free(line->elements);
1256	buf = malloc(len + 1);	line->elements = newElements;
1257	*buf = '\0';	line->numElements = numElements;
1258		}
1259		}
1260
1261	for (i = 1; i < line->numElements; i++) {	return 0;
1262	strcat(buf, line->elements[i].item);	}
	free(line->elements[i].item);
1263
1264	if ((i + 1) != line->numElements) {	static int isnumber(const char *s)
1265	strcat(buf, line->elements[i].indent);	{
1266	free(line->elements[i].indent);	int i;
1267	}	for (i = 0; s[i] != '\0'; i++)
1268	}	if (s[i] < '0' || s[i] > '9')
1269		return 0;
1270	line->elements[1].indent =	return i;
1271	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;
1272
1273	if (sawEntry) {	static struct grubConfig *readConfig(const char *inName,
1274	if (!entry->lines)	struct configFileInfo *cfi)
1275	entry->lines = line;	{
1276	else	int in;
1277	last->next = line;	char *incoming = NULL, *head;
1278	dbgPrintf("readConfig added %d to %p\n", line->type, entry);	int rc;
1279		int sawEntry = 0;
1280		int movedLine = 0;
1281		struct grubConfig *cfg;
1282		struct singleLine *last = NULL, *line, *defaultLine = NULL;
1283		char *end;
1284		struct singleEntry *entry = NULL;
1285		int len;
1286		char *buf;
1287
1288		if (inName == NULL) {
1289		printf("Could not find bootloader configuration\n");
1290		exit(1);
1291		} else if (!strcmp(inName, "-")) {
1292		in = 0;
1293	} else {	} else {
1294	if (!cfg->theLines)	if ((in = open(inName, O_RDONLY)) < 0) {
1295	cfg->theLines = line;	fprintf(stderr, _("error opening %s for read: %s\n"),
1296	else	inName, strerror(errno));
1297	last->next = line;	return NULL;
1298	dbgPrintf("readConfig added %d to cfg\n", line->type);	}
1299	}	}
1300
1301	last = line;	rc = readFile(in, &incoming);
1302	}	close(in);
1303		if (rc)
1304		return NULL;
1305
1306		head = incoming;
1307		cfg = malloc(sizeof(*cfg));
1308		cfg->primaryIndent = strdup("");
1309		cfg->secondaryIndent = strdup("\t");
1310		cfg->flags = GRUB_CONFIG_NO_DEFAULT;
1311		cfg->cfi = cfi;
1312		cfg->theLines = NULL;
1313		cfg->entries = NULL;
1314		cfg->fallbackImage = 0;
1315		cfg->isModified = 0;
1316
1317		/* copy everything we have */
1318		while (*head) {
1319		line = malloc(sizeof(*line));
1320		lineInit(line);
1321
1322		if (getNextLine(&head, line, cfi)) {
1323		free(line);
1324		/* XXX memory leak of everything in cfg */
1325		return NULL;
1326		}
1327
1328	free(incoming);	if (!sawEntry && line->numElements) {
1329		free(cfg->primaryIndent);
1330		cfg->primaryIndent = strdup(line->indent);
1331		} else if (line->numElements) {
1332		free(cfg->secondaryIndent);
1333		cfg->secondaryIndent = strdup(line->indent);
1334		}
1335
1336	if (defaultLine) {	if (isEntryStart(line, cfi) || (cfg->entries && !sawEntry)) {
1337	if (cfi->defaultSupportSaved &&	sawEntry = 1;
1338	!strncmp(defaultLine->elements[1].item, "saved", 5)) {	if (!entry) {
1339	cfg->defaultImage = DEFAULT_SAVED;	cfg->entries = malloc(sizeof(*entry));
1340	} else if (cfi->defaultIsIndex) {	entry = cfg->entries;
1341	cfg->defaultImage = strtol(defaultLine->elements[1].item, &end, 10);	} else {
1342	if (*end) cfg->defaultImage = -1;	entry->next = malloc(sizeof(*entry));
1343	} else if (defaultLine->numElements >= 2) {	entry = entry->next;
1344	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;
	}
1345
1346	if (entry){	entry->skip = 0;
1347	cfg->defaultImage = i;	entry->multiboot = 0;
1348	}else{	entry->lines = NULL;
1349	cfg->defaultImage = -1;	entry->next = NULL;
1350	}	}
	}
	} else {
	cfg->defaultImage = 0;
	}
1351
1352	return cfg;	if (line->type == LT_SET_VARIABLE) {
1353	}	dbgPrintf("found 'set' command (%d elements): ",
1354		line->numElements);
1355		dbgPrintf("%s", line->indent);
1356		for (int i = 0; i < line->numElements; i++)
1357		dbgPrintf("\"%s\"%s", line->elements[i].item,
1358		line->elements[i].indent);
1359		dbgPrintf("\n");
1360		struct keywordTypes *kwType =
1361		getKeywordByType(LT_DEFAULT, cfi);
1362		if (kwType && line->numElements == 3
1363		&& !strcmp(line->elements[1].item, kwType->key)
1364		&& !is_special_grub2_variable(
1365		line->elements[2].item)) {
1366		dbgPrintf("Line sets default config\n");
1367		cfg->flags &= ~GRUB_CONFIG_NO_DEFAULT;
1368		defaultLine = line;
1369		}
1370		} else if (iskernel(line->type)) {
1371		/* if by some freak chance this is multiboot and the
1372		* "module" lines came earlier in the template, make
1373		* sure to use LT_HYPER instead of LT_KERNEL now
1374		*/
1375		if (entry && entry->multiboot)
1376		line->type = LT_HYPER;
1377
1378	static void writeDefault(FILE * out, char * indent,	} else if (line->type == LT_MBMODULE) {
1379	char * separator, struct grubConfig * cfg) {	/* go back and fix the LT_KERNEL line to indicate
1380	struct singleEntry * entry;	* LT_HYPER instead, now that we know this is a
1381	struct singleLine * line;	* multiboot entry.  This only applies to grub, but
1382	int i;	* that's the only place we should find LT_MBMODULE
1383		* lines anyway.
1384		*/
1385		for (struct singleLine * l = entry->lines; l;
1386		l = l->next) {
1387		if (l->type == LT_HYPER)
1388		break;
1389		else if (iskernel(l->type)) {
1390		l->type = LT_HYPER;
1391		break;
1392		}
1393		}
1394		entry->multiboot = 1;
1395
1396	if (!cfg->defaultImage && cfg->flags == GRUB_CONFIG_NO_DEFAULT) return;	} else if (line->type == LT_HYPER) {
1397		entry->multiboot = 1;
1398
1399	if (cfg->defaultImage == DEFAULT_SAVED)	} else if (line->type == LT_FALLBACK && line->numElements == 2) {
1400	fprintf(out, "%sdefault%ssaved\n", indent, separator);	cfg->fallbackImage =
1401	else if (cfg->defaultImage > -1) {	strtol(line->elements[1].item, &end, 10);
1402	if (cfg->cfi->defaultIsIndex) {	if (*end)
1403	fprintf(out, "%sdefault%s%d\n", indent, separator,	cfg->fallbackImage = -1;
1404	cfg->defaultImage);
1405	} else {	} else if ((line->type == LT_DEFAULT && cfi->defaultIsUnquoted)
1406	int image = cfg->defaultImage;	|| (line->type == LT_TITLE
1407		&& line->numElements > 1)) {
1408		/* make the title/default a single argument (undoing
1409		* our parsing) */
1410		len = 0;
1411		for (int i = 1; i < line->numElements; i++) {
1412		len += strlen(line->elements[i].item);
1413		len += strlen(line->elements[i].indent);
1414		}
1415		buf = malloc(len + 1);
1416		*buf = '\0';
1417
1418	entry = cfg->entries;	for (int i = 1; i < line->numElements; i++) {
1419	while (entry && entry->skip) entry = entry->next;	strcat(buf, line->elements[i].item);
1420		free(line->elements[i].item);
1421
1422		if ((i + 1) != line->numElements) {
1423		strcat(buf, line->elements[i].indent);
1424		free(line->elements[i].indent);
1425		}
1426		}
1427
1428	i = 0;	line->elements[1].indent =
1429	while (entry && i < image) {	line->elements[line->numElements - 1].indent;
1430	entry = entry->next;	line->elements[1].item = buf;
1431		line->numElements = 2;
1432		} else if (line->type == LT_MENUENTRY && line->numElements > 3) {
1433		/* let --remove-kernel="TITLE=what" work */
1434		len = 0;
1435		char *extras;
1436		char *title;
1437		/* initially unseen value */
1438		char quote_char = '\0';
1439
1440		for (int i = 1; i < line->numElements; i++) {
1441		len += strlen(line->elements[i].item);
1442		len += strlen(line->elements[i].indent);
1443		}
1444		buf = malloc(len + 1);
1445		*buf = '\0';
1446
1447	while (entry && entry->skip) entry = entry->next;	/* allocate mem for extra flags. */
1448	i++;	extras = malloc(len + 1);
1449	}	*extras = '\0';
1450
1451		int buf_len = 0;
1452		/* get title. */
1453		for (int i = 0; i < line->numElements; i++) {
1454		if (!strcmp
1455		(line->elements[i].item, "menuentry"))
1456		continue;
1457		if (isquote(*line->elements[i].item)
1458		&& quote_char == '\0') {
1459		/* ensure we properly pair off quotes */
1460		quote_char = *line->elements[i].item;
1461		title = line->elements[i].item + 1;
1462		} else {
1463		title = line->elements[i].item;
1464		}
1465
1466	if (!entry) return;	len = strlen(title);
1467		if (title[len - 1] == quote_char) {
1468		memcpy(buf + buf_len, title, len - 1);
1469		buf_len += (len - 1);
1470		break;
1471		} else {
1472		memcpy(buf + buf_len, title, len);
1473		buf_len += len;
1474		len = strlen(line->elements[i].indent);
1475		memcpy(buf + buf_len, line->elements[i].indent, len);
1476		buf_len += len;
1477		}
1478		}
1479		buf[buf_len] = '\0';
1480
1481	line = getLineByType(LT_TITLE, entry->lines);	/* get extras */
1482		int count = 0;
1483		quote_char = '\0';
1484		for (int i = 0; i < line->numElements; i++) {
1485		if (count >= 2) {
1486		strcat(extras, line->elements[i].item);
1487		strcat(extras,
1488		line->elements[i].indent);
1489		}
1490
1491	if (line && line->numElements >= 2)	if (!strcmp
1492	fprintf(out, "%sdefault%s%s\n", indent, separator,	(line->elements[i].item, "menuentry"))
1493	line->elements[1].item);	continue;
1494	else if (line && (line->numElements == 1) &&
1495	cfg->cfi->titleBracketed) {	/* count ' or ", there should be two in menuentry line. */
1496	fprintf(out, "%sdefault%s%s\n", indent, separator,	if (isquote(*line->elements[i].item)
1497	extractTitle(line));	&& quote_char == '\0') {
1498	}	/* ensure we properly pair off quotes */
1499	}	quote_char = *line->elements[i].item;
1500	}	count++;
1501	}	}
1502
1503	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;
	}
	}
	}
1504
1505	line = cfg->theLines;	if (line->elements[i].item[len - 1] ==
1506	while (line) {	quote_char)
1507	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;
	}
	}
1508
1509	line = line->next;	/* ok, we get the final ' or ", others are extras. */
1510	}	}
1511		line->elements[1].indent =
1512		line->elements[line->numElements - 2].indent;
1513		line->elements[1].item = buf;
1514		line->elements[2].indent =
1515		line->elements[line->numElements - 2].indent;
1516		line->elements[2].item = extras;
1517		line->numElements = 3;
1518		} else if (line->type == LT_KERNELARGS && cfi->argsInQuotes) {
1519		/* Strip off any " which may be present; they'll be
1520		* put back on write. This is one of the few (the
1521		* only?) places that grubby canonicalizes the output
1522		*/
1523		if (line->numElements >= 2) {
1524		int last, len;
1525
1526	if (needs & MAIN_DEFAULT) {	if (isquote(*line->elements[1].item))
1527	writeDefault(out, cfg->primaryIndent, "=", cfg);	memmove(line->elements[1].item,
1528	needs &= ~MAIN_DEFAULT;	line->elements[1].item + 1,
1529	}	strlen(line->elements[1].item +
1530		1) + 1);
1531	i = 0;
1532	while ((entry = findEntryByIndex(cfg, i++))) {	last = line->numElements - 1;
1533	if (entry->skip) continue;	len = strlen(line->elements[last].item) - 1;
1534		if (isquote(line->elements[last].item[len]))
1535	line = entry->lines;	line->elements[last].item[len] = '\0';
1536	while (line) {	}
1537	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;
	}
	}
1538
1539	if (tmpOutName) {	if (line->type == LT_DEFAULT && line->numElements == 2) {
1540	if (rename(tmpOutName, outName)) {	cfg->flags &= ~GRUB_CONFIG_NO_DEFAULT;
1541	fprintf(stderr, _("grubby: error moving %s to %s: %s\n"),	defaultLine = line;
1542	tmpOutName, outName, strerror(errno));	}
	unlink(outName);
	return 1;
	}
	}
1543
1544	return 0;	/* If we find a generic config option which should live at the
1545	}	top of the file, move it there. Old versions of grubby were
1546		probably responsible for putting new images in the wrong
1547		place in front of it anyway. */
1548		if (sawEntry && line->type == LT_GENERIC) {
1549		struct singleLine **l = &cfg->theLines;
1550		struct singleLine **last_nonws = &cfg->theLines;
1551		while (*l) {
1552		if ((*l)->type != LT_WHITESPACE)
1553		last_nonws = &((*l)->next);
1554		l = &((*l)->next);
1555		}
1556		line->next = *last_nonws;
1557		*last_nonws = line;
1558		movedLine = 1;
1559		continue; /* without setting 'last' */
1560		}
1561
1562	static int numEntries(struct grubConfig *cfg) {	/* If a second line of whitespace happens after a generic
1563	int i = 0;	* option which was moved, drop it. */
1564	struct singleEntry * entry;	if (movedLine && line->type == LT_WHITESPACE
1565		&& last->type == LT_WHITESPACE) {
1566	entry = cfg->entries;	lineFree(line);
1567	while (entry) {	free(line);
1568	if (!entry->skip)	movedLine = 0;
1569	i++;	continue;
1570	entry = entry->next;	}
1571	}	movedLine = 0;
	return i;
	}
1572
1573	static char *findDiskForRoot()	if (sawEntry) {
1574	{	if (!entry->lines)
1575	int fd;	entry->lines = line;
1576	char buf[65536];	else
1577	char *devname;	last->next = line;
1578	char *chptr;	dbgPrintf("readConfig added %s to %p\n",
1579	int rc;	getKeyByType(line->type, cfi), entry);
1580
1581	if ((fd = open(_PATH_MOUNTED, O_RDONLY)) < 0) {	/* we could have seen this outside of an entry... if
1582	fprintf(stderr, "grubby: failed to open %s: %s\n",	* so, we ignore it like any other line we don't grok
1583	_PATH_MOUNTED, strerror(errno));	*/
1584	return NULL;	if (line->type == LT_ENTRY_END && sawEntry)
1585	}	sawEntry = 0;
1586		} else {
1587		if (!cfg->theLines)
1588		cfg->theLines = line;
1589		else
1590		last->next = line;
1591		dbgPrintf("readConfig added %s to cfg\n",
1592		getKeyByType(line->type, cfi));
1593		}
1594
1595	rc = read(fd, buf, sizeof(buf) - 1);	last = line;
1596	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++;
	}
1597
1598	return NULL;	free(incoming);
	}
1599
1600	int suitableImage(struct singleEntry * entry, const char * bootPrefix,	dbgPrintf("defaultLine is %s\n", defaultLine ? "set" : "unset");
1601	int skipRemoved, int flags) {	if (defaultLine) {
1602	struct singleLine * line;	if (defaultLine->numElements > 2 &&
1603	char * fullName;	cfi->defaultSupportSaved &&
1604	int i;	!strncmp(defaultLine->elements[2].item,
1605	char * dev;	"\"${saved_entry}\"", 16)) {
1606	char * rootspec;	cfg->cfi->defaultIsSaved = 1;
1607	char * rootdev;	cfg->defaultImage = DEFAULT_SAVED_GRUB2;
1608		if (cfg->cfi->getEnv) {
1609	if (skipRemoved && entry->skip) return 0;	char *defTitle =
1610		cfi->getEnv(cfg->cfi, "saved_entry");
1611	line = getLineByType(LT_KERNEL|LT_HYPER, entry->lines);	if (defTitle) {
1612	if (!line || line->numElements < 2) return 0;	int index = 0;
1613		if (isnumber(defTitle)) {
1614	if (flags & GRUBBY_BADIMAGE_OKAY) return 1;	index = atoi(defTitle);
1615		entry =
1616	fullName = alloca(strlen(bootPrefix) +	findEntryByIndex(cfg,
1617	strlen(line->elements[1].item) + 1);	index);
1618	rootspec = getRootSpecifier(line->elements[1].item);	} else {
1619	sprintf(fullName, "%s%s", bootPrefix,	entry =
1620	line->elements[1].item + (rootspec ? strlen(rootspec) : 0));	findEntryByTitle(cfg,
1621	if (access(fullName, R_OK)) return 0;	defTitle,
1622		&index);
1623	for (i = 2; i < line->numElements; i++)	}
1624	if (!strncasecmp(line->elements[i].item, "root=", 5)) break;	if (entry)
1625	if (i < line->numElements) {	cfg->defaultImage = index;
1626	dev = line->elements[i].item + 5;	}
1627	} else {	}
1628	/* look for a lilo style LT_ROOT line */	} else if (cfi->defaultIsVariable) {
1629	line = getLineByType(LT_ROOT, entry->lines);	if (defaultLine->numElements == 2) {
1630		char *value = defaultLine->elements[1].item + 8;
1631		while (*value && (*value == '"' ||
1632		*value == '\'' ||
1633		*value == ' ' ||
1634		*value == '\t'))
1635		value++;
1636		cfg->defaultImage = strtol(value, &end, 10);
1637		while (*end && (*end == '"' || *end == '\'' ||
1638		*end == ' ' || *end == '\t'))
1639		end++;
1640		if (*end)
1641		cfg->defaultImage = NO_DEFAULT_ENTRY;
1642		} else if (defaultLine->numElements == 3) {
1643		char *value = defaultLine->elements[2].item;
1644		while (*value && (*value == '"' ||
1645		*value == '\'' ||
1646		*value == ' ' ||
1647		*value == '\t'))
1648		value++;
1649		cfg->defaultImage = strtol(value, &end, 10);
1650		while (*end && (*end == '"' || *end == '\'' ||
1651		*end == ' ' || *end == '\t'))
1652		end++;
1653		if (*end)
1654		cfg->defaultImage = NO_DEFAULT_ENTRY;
1655		}
1656		} else if (cfi->defaultSupportSaved &&
1657		!strncmp(defaultLine->elements[1].item, "saved",
1658		5)) {
1659		cfg->defaultImage = DEFAULT_SAVED;
1660		} else if (cfi->defaultIsIndex) {
1661		cfg->defaultImage =
1662		strtol(defaultLine->elements[1].item, &end, 10);
1663		if (*end)
1664		cfg->defaultImage = NO_DEFAULT_ENTRY;
1665		} else if (defaultLine->numElements >= 2) {
1666		int i = 0;
1667		while ((entry = findEntryByIndex(cfg, i))) {
1668		for (line = entry->lines; line;
1669		line = line->next)
1670		if (line->type == LT_TITLE)
1671		break;
1672
1673		if (!cfi->titleBracketed) {
1674		if (line && (line->numElements >= 2) &&
1675		!strcmp(defaultLine->elements[1].
1676		item,
1677		line->elements[1].item))
1678		break;
1679		} else if (line) {
1680		if (!strcmp
1681		(defaultLine->elements[1].item,
1682		extractTitle(cfg, line)))
1683		break;
1684		}
1685		i++;
1686		entry = NULL;
1687		}
1688
1689	if (line && line->numElements >= 2) {	if (entry) {
1690	dev = line->elements[1].item;	cfg->defaultImage = i;
1691		} else {
1692		cfg->defaultImage = NO_DEFAULT_ENTRY;
1693		}
1694		}
1695		} else if (cfg->cfi->defaultIsSaved && cfg->cfi->getEnv) {
1696		char *defTitle = cfi->getEnv(cfg->cfi, "saved_entry");
1697		if (defTitle) {
1698		int index = 0;
1699		if (isnumber(defTitle)) {
1700		index = atoi(defTitle);
1701		entry = findEntryByIndex(cfg, index);
1702		} else {
1703		entry = findEntryByTitle(cfg, defTitle, &index);
1704		}
1705		if (entry)
1706		cfg->defaultImage = index;
1707		}
1708	} else {	} else {
1709	/* 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;
	}
1710	}	}
	}
1711
1712	dev = getpathbyspec(dev);	return cfg;
1713	if (!dev)	}
	return 0;
1714
1715	rootdev = findDiskForRoot();	static void writeDefault(FILE * out, char *indent,
1716	if (!rootdev)	char *separator, struct grubConfig *cfg)
1717	return 0;	{
1718		struct singleEntry *entry;
1719		struct singleLine *line;
1720		int i;
1721
1722		if (!cfg->defaultImage && cfg->flags == GRUB_CONFIG_NO_DEFAULT)
1723		return;
1724
1725		if (cfg->defaultImage == DEFAULT_SAVED)
1726		fprintf(out, "%sdefault%ssaved\n", indent, separator);
1727		else if (cfg->cfi->defaultIsSaved) {
1728		fprintf(out, "%sset default=\"${saved_entry}\"\n", indent);
1729		if (cfg->defaultImage >= FIRST_ENTRY_INDEX && cfg->cfi->setEnv) {
1730		char *title;
1731		int trueIndex, currentIndex;
1732
1733		trueIndex = 0;
1734		currentIndex = 0;
1735
1736		while ((entry = findEntryByIndex(cfg, currentIndex))) {
1737		if (!entry->skip) {
1738		if (trueIndex == cfg->defaultImage) {
1739		break;
1740		}
1741		trueIndex++;
1742		}
1743		currentIndex++;
1744		}
1745		line = getLineByType(LT_MENUENTRY, entry->lines);
1746		if (!line)
1747		line = getLineByType(LT_TITLE, entry->lines);
1748		if (line) {
1749		title = extractTitle(cfg, line);
1750		if (title)
1751		cfg->cfi->setEnv(cfg->cfi,
1752		"saved_entry", title);
1753		}
1754		}
1755		} else if (cfg->defaultImage >= FIRST_ENTRY_INDEX) {
1756		if (cfg->cfi->defaultIsIndex) {
1757		if (cfg->cfi->defaultIsVariable) {
1758		fprintf(out, "%sset default=\"%d\"\n", indent,
1759		cfg->defaultImage);
1760		} else {
1761		fprintf(out, "%sdefault%s%d\n", indent,
1762		separator, cfg->defaultImage);
1763		}
1764		} else {
1765		int image = cfg->defaultImage;
1766
1767	if (!getuuidbydev(rootdev) || !getuuidbydev(dev)) {	entry = cfg->entries;
1768	free(rootdev);	while (entry && entry->skip)
1769	return 0;	entry = entry->next;
1770	}
1771		i = 0;
1772		while (entry && i < image) {
1773		entry = entry->next;
1774
1775	if (strcmp(getuuidbydev(rootdev), getuuidbydev(dev))) {	while (entry && entry->skip)
1776	free(rootdev);	entry = entry->next;
1777	return 0;	i++;
1778	}	}
1779
1780	free(rootdev);	if (!entry)
1781		return;
1782
1783	return 1;	line = getLineByType(LT_TITLE, entry->lines);
	}
1784
1785	/* returns the first match on or after the one pointed to by index (if index	if (line && line->numElements >= 2)
1786	is not NULL) which is not marked as skip */	fprintf(out, "%sdefault%s%s\n", indent,
1787	struct singleEntry * findEntryByPath(struct grubConfig * config,	separator, line->elements[1].item);
1788	const char * kernel, const char * prefix,	else if (line && (line->numElements == 1)
1789	int * index) {	&& cfg->cfi->titleBracketed) {
1790	struct singleEntry * entry = NULL;	char *title = extractTitle(cfg, line);
1791	struct singleLine * line;	if (title) {
1792	int i;	fprintf(out, "%sdefault%s%s\n", indent,
1793	char * chptr;	separator, title);
1794	char * rootspec = NULL;	free(title);
1795	enum lineType_e checkType = LT_KERNEL;	}
1796		}
1797		}
1798		}
1799		}
1800
1801	if (isdigit(*kernel)) {	static int writeConfig(struct grubConfig *cfg, char *outName,
1802	int * indexVars = alloca(sizeof(*indexVars) * strlen(kernel));	const char *prefix)
1803		{
1804		FILE *out;
1805		struct singleLine *line;
1806		struct singleEntry *entry;
1807		char *tmpOutName;
1808		int needs = MAIN_DEFAULT;
1809		struct stat sb;
1810		int i;
1811		int rc = 0;
1812
1813		if (!strcmp(outName, "-")) {
1814		out = stdout;
1815		tmpOutName = NULL;
1816		} else {
1817		if (!lstat(outName, &sb) && S_ISLNK(sb.st_mode)) {
1818		char *buf;
1819		int len = 256;
1820		int rc;
1821
1822		/* most likely the symlink is relative, so change our
1823		directory to the dir of the symlink */
1824		char *dir = strdupa(outName);
1825		rc = chdir(dirname(dir));
1826		do {
1827		buf = alloca(len + 1);
1828		rc = readlink(basename(outName), buf, len);
1829		if (rc == len)
1830		len += 256;
1831		} while (rc == len);
1832
1833		if (rc < 0) {
1834		fprintf(stderr,
1835		_
1836		("grubby: error readlink link %s: %s\n"),
1837		outName, strerror(errno));
1838		return 1;
1839		}
1840
1841	i = 0;	outName = buf;
1842	indexVars[i] = strtol(kernel, &chptr, 10);	outName[rc] = '\0';
1843	while (*chptr == ',') {	}
	i++;
	kernel = chptr + 1;
	indexVars[i] = strtol(kernel, &chptr, 10);
	}
1844
1845	if (*chptr) {	tmpOutName = alloca(strlen(outName) + 2);
1846	/* can't parse it, bail */	sprintf(tmpOutName, "%s-", outName);
1847	return NULL;	out = fopen(tmpOutName, "w");
1848	}	if (!out) {
1849		fprintf(stderr, _("grubby: error creating %s: %s\n"),
1850		tmpOutName, strerror(errno));
1851		return 1;
1852		}
1853
1854	indexVars[i + 1] = -1;	if (!stat(outName, &sb)) {
1855		if (chmod(tmpOutName, sb.st_mode & ~(S_IFMT))) {
1856	i = 0;	fprintf(stderr,
1857	if (index) {	_
1858	while (i < *index) i++;	("grubby: error setting perms on %s: %s\n"),
1859	if (indexVars[i] == -1) return NULL;	tmpOutName, strerror(errno));
1860		fclose(out);
1861		unlink(tmpOutName);
1862		return 1;
1863		}
1864		}
1865	}	}
1866
1867	entry = findEntryByIndex(config, indexVars[i]);	line = cfg->theLines;
1868	if (!entry) return NULL;	struct keywordTypes *defaultKw = getKeywordByType(LT_DEFAULT, cfg->cfi);
1869		while (line) {
1870	line = getLineByType(LT_KERNEL|LT_HYPER, entry->lines);	if (line->type == LT_SET_VARIABLE && defaultKw &&
1871	if (!line) return NULL;	line->numElements == 3 &&
1872		!strcmp(line->elements[1].item, defaultKw->key) &&
1873		!is_special_grub2_variable(line->elements[2].item)) {
1874		writeDefault(out, line->indent,
1875		line->elements[0].indent, cfg);
1876		needs &= ~MAIN_DEFAULT;
1877		} else if (line->type == LT_DEFAULT) {
1878		writeDefault(out, line->indent,
1879		line->elements[0].indent, cfg);
1880		needs &= ~MAIN_DEFAULT;
1881		} else if (line->type == LT_FALLBACK) {
1882		if (cfg->fallbackImage > -1)
1883		fprintf(out, "%s%s%s%d\n", line->indent,
1884		line->elements[0].item,
1885		line->elements[0].indent,
1886		cfg->fallbackImage);
1887		} else {
1888		if (lineWrite(out, line, cfg->cfi) == -1) {
1889		fprintf(stderr,
1890		_("grubby: error writing %s: %s\n"),
1891		tmpOutName, strerror(errno));
1892		fclose(out);
1893		unlink(tmpOutName);
1894		return 1;
1895		}
1896		}
1897
1898	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;
1899	}	}
	} else if (!strcmp(kernel, "ALL")) {
	if (index)
	i = *index;
	else
	i = 0;
1900
1901	while ((entry = findEntryByIndex(config, i))) {	if (needs & MAIN_DEFAULT) {
1902	if (!entry->skip) break;	writeDefault(out, cfg->primaryIndent, "=", cfg);
1903	i++;	needs &= ~MAIN_DEFAULT;
1904	}	}
1905
1906	if (entry && index)	i = 0;
1907	*index = i;	while ((entry = findEntryByIndex(cfg, i++))) {
1908	} else {	if (entry->skip)
1909	if (index)	continue;
1910	i = *index;
1911	else	line = entry->lines;
1912	i = 0;	while (line) {
1913		if (lineWrite(out, line, cfg->cfi) == -1) {
1914	if (!strncmp(kernel, "TITLE=", 6)) {	fprintf(stderr,
1915	prefix = "";	_("grubby: error writing %s: %s\n"),
1916	checkType = LT_TITLE;	tmpOutName, strerror(errno));
1917	kernel += 6;	fclose(out);
1918		unlink(tmpOutName);
1919		return 1;
1920		}
1921		line = line->next;
1922		}
1923	}	}
1924
1925	for (entry = findEntryByIndex(config, i); entry; entry = entry->next, i++) {	if (tmpOutName) {
1926	if (entry->skip) continue;	/* write userspace buffers */
1927		if (fflush(out))
1928	dbgPrintf("findEntryByPath looking for %d %s in %p\n", checkType, kernel, entry);	rc = 1;
1929
1930		/* purge the write-back cache with fsync() */
1931		if (fsync(fileno(out)))
1932		rc = 1;
1933
1934		if (fclose(out))
1935		rc = 1;
1936
1937		if (rc == 0 && rename(tmpOutName, outName)) {
1938		unlink(tmpOutName);
1939		rc = 1;
1940		}
1941
1942	/* check all the lines matching checkType */	/* fsync() the destination directory after rename */
1943	for (line = entry->lines; line; line = line->next) {	if (rc == 0) {
1944	line = getLineByType(entry->multiboot && checkType == LT_KERNEL ?	int dirfd;
1945	LT_KERNEL|LT_MBMODULE|LT_HYPER :
1946	checkType, line);	dirfd = open(dirname(strdupa(outName)), O_RDONLY);
1947	if (!line) break;  /* not found in this entry */	if (dirfd < 0)
1948		rc = 1;
1949		else if (fsync(dirfd))
1950		rc = 1;
1951
1952	if (line && line->numElements >= 2) {	if (dirfd >= 0)
1953	rootspec = getRootSpecifier(line->elements[1].item);	close(dirfd);
	if (!strcmp(line->elements[1].item +
	((rootspec != NULL) ? strlen(rootspec) : 0),
	kernel + strlen(prefix)))
	break;
1954	}	}
	}
1955
1956	/* make sure this entry has a kernel identifier; this skips	if (rc == 1)
1957	* non-Linux boot entries (could find netbsd etc, though, which is	fprintf(stderr,
1958	* unfortunate)	_("grubby: error flushing data: %m\n"));
	*/
	if (line && getLineByType(LT_KERNEL|LT_HYPER, entry->lines))
	break; /* found 'im! */
1959	}	}
1960
1961	if (index) *index = i;	return rc;
	}
	return entry;
1962	}	}
1963
1964	struct singleEntry * findEntryByIndex(struct grubConfig * cfg, int index) {	static int numEntries(struct grubConfig *cfg)
1965	struct singleEntry * entry;	{
1966		int i = 0;
1967	entry = cfg->entries;	struct singleEntry *entry;
	while (index && entry) {
	entry = entry->next;
	index--;
	}
1968
1969	return entry;	entry = cfg->entries;
1970		while (entry) {
1971		if (!entry->skip)
1972		i++;
1973		entry = entry->next;
1974		}
1975		return i;
1976	}	}
1977
1978	/* Find a good template to use for the new kernel. An entry is	static char *findDiskForRoot()
1979	* good if the kernel and mkinitrd exist (even if the entry	{
1980	* is going to be removed). Try and use the default entry, but	int fd;
1981	* if that doesn't work just take the first. If we can't find one,	char buf[65536];
1982	* bail. */	char *devname;
1983	struct singleEntry * findTemplate(struct grubConfig * cfg, const char * prefix,	char *chptr;
1984	int * indexPtr, int skipRemoved, int flags) {	int rc;
1985	struct singleEntry * entry, * entry2;
1986	int index;	if ((fd = open(_PATH_MOUNTED, O_RDONLY)) < 0) {
1987		fprintf(stderr, "grubby: failed to open %s: %s\n",
1988	if (cfg->defaultImage > -1) {	_PATH_MOUNTED, strerror(errno));
1989	entry = findEntryByIndex(cfg, cfg->defaultImage);	return NULL;
1990	if (entry && suitableImage(entry, prefix, skipRemoved, flags)) {	}
1991	if (indexPtr) *indexPtr = cfg->defaultImage;
1992	return entry;	rc = read(fd, buf, sizeof(buf) - 1);
1993		if (rc <= 0) {
1994		fprintf(stderr, "grubby: failed to read %s: %s\n",
1995		_PATH_MOUNTED, strerror(errno));
1996		close(fd);
1997		return NULL;
1998	}	}
1999	}	close(fd);
2000		buf[rc] = '\0';
2001	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;
2002
2003	return entry;	char *foundanswer = NULL;
	}
2004
2005	index++;	while (chptr && chptr != buf + rc) {
2006	}	devname = chptr;
2007
2008	fprintf(stderr, _("grubby fatal error: unable to find a suitable template\n"));	/*
2009		* The first column of a mtab entry is the device, but if the
2010		* entry is a special device it won't start with /, so move
2011		* on to the next line.
2012		*/
2013		if (*devname != '/') {
2014		chptr = strchr(chptr, '\n');
2015		if (chptr)
2016		chptr++;
2017		continue;
2018		}
2019
2020	return NULL;	/* Seek to the next space */
2021	}	chptr = strchr(chptr, ' ');
2022		if (!chptr) {
2023		fprintf(stderr, "grubby: error parsing %s: %s\n",
2024		_PATH_MOUNTED, strerror(errno));
2025		return NULL;
2026		}
2027
2028	char * findBootPrefix(void) {	/*
2029	struct stat sb, sb2;	* The second column of a mtab entry is the mount point, we
2030		* are looking for '/' obviously.
2031		*/
2032		if (*(++chptr) == '/' && *(++chptr) == ' ') {
2033		/* remember the last / entry in mtab */
2034		foundanswer = devname;
2035		}
2036
2037	stat("/", &sb);	/* Next line */
2038	#ifdef __ia64__	chptr = strchr(chptr, '\n');
2039	stat("/boot/efi/EFI/redhat/", &sb2);	if (chptr)
2040	#else	chptr++;
2041	stat("/boot", &sb2);	}
	#endif
2042
2043	if (sb.st_dev == sb2.st_dev)	/* Return the last / entry found */
2044	return strdup("");	if (foundanswer) {
2045		chptr = strchr(foundanswer, ' ');
2046		*chptr = '\0';
2047		return strdup(foundanswer);
2048		}
2049
2050	#ifdef __ia64__	return NULL;
	return strdup("/boot/efi/EFI/redhat/");
	#else
	return strdup("/boot");
	#endif
2051	}	}
2052
2053	void markRemovedImage(struct grubConfig * cfg, const char * image,	void printEntry(struct singleEntry *entry, FILE * f)
2054	const char * prefix) {	{
2055	struct singleEntry * entry;	int i;
2056		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;
2057
2058	if (entry && !entry->skip) {	for (line = entry->lines; line; line = line->next) {
2059	/* we can preserve the default */	log_message(f, "DBG: %s", line->indent);
2060	if (hasNew)	for (i = 0; i < line->numElements; i++) {
2061	config->defaultImage++;	/* Need to handle this, because we strip the quotes from
2062		* menuentry when read it. */
2063	/* count the number of entries erased before this one */	if (line->type == LT_MENUENTRY && i == 1) {
2064	for (j = 0; j < config->defaultImage; j++) {	if (!isquote(*line->elements[i].item))
2065	entry2 = findEntryByIndex(config, j);	log_message(f, "\'%s\'",
2066	if (entry2->skip) config->defaultImage--;	line->elements[i].item);
2067	}	else
2068	} else if (hasNew) {	log_message(f, "%s",
2069	config->defaultImage = 0;	line->elements[i].item);
2070	} 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;
	}
	}
2071
2072	void setFallbackImage(struct grubConfig * config, int hasNew) {	continue;
2073	struct singleEntry * entry, * entry2;	}
	int j;
	if (config->fallbackImage == -1) return;
	entry = findEntryByIndex(config, config->fallbackImage);
	if (!entry || entry->skip) {
	config->fallbackImage = -1;
	return;
	}
2074
2075	if (hasNew)	log_message(f, "%s%s",
2076	config->fallbackImage++;	line->elements[i].item,
2077		line->elements[i].indent);
2078	/* count the number of entries erased before this one */	}
2079	for (j = 0; j < config->fallbackImage; j++) {	log_message(f, "\n");
2080	entry2 = findEntryByIndex(config, j);	}
	if (entry2->skip) config->fallbackImage--;
	}
2081	}	}
2082
2083	void displayEntry(struct singleEntry * entry, const char * prefix, int index) {	void notSuitablePrintf(struct singleEntry *entry, int okay, const char *fmt,
2084	struct singleLine * line;	...)
2085	char * root = NULL;	{
2086	int i;	static int once;
2087		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);
2088
2089	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);
	}
2090
2091	i++;	va_copy(argq, argp);
2092		if (!once) {
2093		log_time(NULL);
2094		log_message(NULL, "command line: %s\n", saved_command_line);
2095	}	}
2096	printf("\"\n");	log_message(NULL, "DBG: Image entry %s: ",
2097	} else {	okay ? "succeeded" : "failed");
2098	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;
2099
2100	printf("%s%s", s, line->elements[i].indent);	printEntry(entry, NULL);
2101	}	va_end(argq);
2102
2103	i++;	if (!debug) {
2104	}	once = 1;
2105		va_end(argp);
2106		return;
2107		}
2108
2109	s = line->elements[i - 1].indent;	if (okay) {
2110	printf("\"\n");	va_end(argp);
2111		return;
2112	}	}
	}
2113
2114	if (!root) {	if (!once)
2115	line = getLineByType(LT_ROOT, entry->lines);	log_message(stderr, "DBG: command line: %s\n",
2116	if (line && line->numElements >= 2)	saved_command_line);
2117	root=line->elements[1].item;	once = 1;
2118	}	fprintf(stderr, "DBG: Image entry failed: ");
2119		vfprintf(stderr, fmt, argp);
2120		printEntry(entry, stderr);
2121		va_end(argp);
2122		}
2123
2124	if (root) {	#define beginswith(s, c) ((s) && (s)[0] == (c))
2125	char * s = alloca(strlen(root) + 1);
2126		static int endswith(const char *s, char c)
2127	strcpy(s, root);	{
2128	if (s[strlen(s) - 1] == '"')	int slen;
	s[strlen(s) - 1] = '\0';
	/* make sure the root doesn't have a trailing " */
	printf("root=%s\n", s);
	}
2129
2130	line = getLineByType(LT_INITRD, entry->lines);	if (!s || !s[0])
2131		return 0;
2132		slen = strlen(s) - 1;
2133
2134	if (line && line->numElements >= 2) {	return s[slen] == c;
	printf("initrd=%s", prefix);
	for (i = 1; i < line->numElements; i++)
	printf("%s%s", line->elements[i].item, line->elements[i].indent);
	printf("\n");
	}
2135	}	}
2136
2137	int parseSysconfigGrub(int * lbaPtr, char ** bootPtr) {	typedef struct {
2138	FILE * in;	const char *start;
2139	char buf[1024];	size_t      chars;
2140	char * chptr;	} field;
	char * start;
	char * param;
	in = fopen("/etc/conf.d/grub", "r");
	if (!in) return 1;
	if (lbaPtr) *lbaPtr = 0;
	if (bootPtr) *bootPtr = NULL;
	while (fgets(buf, sizeof(buf), in)) {
	start = buf;
	while (isspace(*start)) start++;
	if (*start == '#') continue;
	chptr = strchr(start, '=');
	if (!chptr) continue;
	chptr--;
	while (*chptr && isspace(*chptr)) chptr--;
	chptr++;
	*chptr = '\0';
	param = chptr + 1;
	while (*param && isspace(*param)) param++;
	if (*param == '=') {
	param++;
	while (*param && isspace(*param)) param++;
	}
	chptr = param;
	while (*chptr && !isspace(*chptr)) chptr++;
	*chptr = '\0';
	if (!strcmp(start, "forcelba") && !strcmp(param, "1") && lbaPtr)
	*lbaPtr = 1;
	else if (!strcmp(start, "boot") && bootPtr)
	*bootPtr = strdup(param);
	}
	fclose(in);
2141
2142	return 0;	static int iscomma(int c)
2143		{
2144		return c == ',';
2145	}	}
2146
2147	void dumpSysconfigGrub(void) {	static int isequal(int c)
2148	char * boot;	{
2149	int lba;	return c == '=';
	if (!parseSysconfigGrub(&lba, &boot)) {
	if (lba) printf("lba\n");
	if (boot) printf("boot=%s\n", boot);
	}
2150	}	}
2151
2152	int displayInfo(struct grubConfig * config, char * kernel,	static field findField(const field *in, typeof(isspace) *isdelim, field *out)
2153	const char * prefix) {	{
2154	int i = 0;	field nxt = {};
2155	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;
	}
2156
2157	/* this is a horrible hack to support /etc/conf.d/grub; there must	while (off < in->chars && isdelim(in->start[off]))
2158	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);
	}
2159
2160	line = getLineByType(LT_LBA, config->theLines);	if (off == in->chars)
2161	if (line) printf("lba\n");	return nxt;
	}
2162
2163	displayEntry(entry, prefix, i);	out->start = &in->start[off];
2164		out->chars = 0;
2165
2166	i++;	while (off + out->chars < in->chars && !isdelim(out->start[out->chars]))
2167	while ((entry = findEntryByPath(config, kernel, prefix, &i))) {	out->chars++;
	displayEntry(entry, prefix, i);
	i++;
	}
2168
2169	return 0;	nxt.start = out->start + out->chars;
2170		nxt.chars = in->chars - off - out->chars;
2171		return nxt;
2172	}	}
2173
2174	struct singleLine * addLineTmpl(struct singleEntry * entry,	static int fieldEquals(const field *in, const char *str)
2175	struct singleLine * tmplLine,	{
2176	struct singleLine * prevLine,	return in->chars == strlen(str) &&
2177	const char * val,	strncmp(in->start, str, in->chars) == 0;
2178	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 : "");
2179
2180	if (!entry->lines) {	/* Parse /proc/mounts to determine the subvolume prefix. */
2181	/* first one on the list */	static size_t subvolPrefix(const char *str)
2182	entry->lines = newLine;	{
2183	} else if (prevLine) {	FILE *file = NULL;
2184	/* add after prevLine */	char *line = NULL;
2185	newLine->next = prevLine->next;	size_t prfx = 0;
2186	prevLine->next = newLine;	size_t size = 0;
	}
2187
2188	return newLine;	file = fopen(mounts, "r");
2189	}	if (!file)
2190		return 0;
2191
2192	/* val may be NULL */	for (ssize_t s; (s = getline(&line, &size, file)) >= 0; ) {
2193	struct singleLine *  addLine(struct singleEntry * entry,	field nxt = { line, s };
2194	struct configFileInfo * cfi,	field dev = {};
2195	enum lineType_e type, char * defaultIndent,	field path = {};
2196	const char * val) {	field type = {};
2197	struct singleLine * line, * prev;	field opts = {};
2198	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 = "";
	}
	}
2199
2200	/* The last non-empty line gives us the indention to us and the line	nxt = findField(&nxt, isspace, &dev);
2201	to insert after. Note that comments are considered empty lines, which	if (!nxt.start)
2202	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;
	}
2203
2204	if (prev == entry->lines)	nxt = findField(&nxt, isspace, &path);
2205	tmpl.indent = defaultIndent ?: "";	if (!nxt.start)
2206	else	continue;
	tmpl.indent = prev->indent;
2207
2208	return addLineTmpl(entry, &tmpl, prev, val, cfi);	nxt = findField(&nxt, isspace, &type);
2209	}	if (!nxt.start)
2210		continue;
2211
2212	void removeLine(struct singleEntry * entry, struct singleLine * line) {	nxt = findField(&nxt, isspace, &opts);
2213	struct singleLine * prev;	if (!nxt.start)
2214	int i;	continue;
2215
2216	for (i = 0; i < line->numElements; i++) {	if (!fieldEquals(&type, "btrfs"))
2217	free(line->elements[i].item);	continue;
	free(line->elements[i].indent);
	}
	free(line->elements);
	free(line->indent);
2218
2219	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;
	}
2220
2221	free(line);	nxt = opts;
2222	}	while ((nxt = findField(&nxt, iscomma, &opt)).start) {
2223		field key = {};
2224		field val = {};
2225
2226	static void insertElement(struct singleLine * line,	opt = findField(&opt, isequal, &key);
2227	const char * item, int insertHere,	if (!opt.start)
2228	struct configFileInfo * cfi)	continue;
	{
	struct keywordTypes * kw;
	char indent[2] = "";
2229
2230	/* sanity check */	opt = findField(&opt, isequal, &val);
2231	if (insertHere > line->numElements) {	if (!opt.start)
2232	dbgPrintf("insertElement() adjusting insertHere from %d to %d\n",	continue;
	insertHere, line->numElements);
	insertHere = line->numElements;
	}
2233
2234	line->elements = realloc(line->elements, (line->numElements + 1) *	if (!fieldEquals(&key, "subvol"))
2235	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] = ' ';
	}
2236
2237	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);
	}
2238
2239	line->numElements++;	if (strncmp(val.start, str, val.chars))
2240		continue;
2241
2242	dbgPrintf("insertElement(%s, '%s%s', %d)\n",	if (val.start[val.chars - 1] != '/' &&
2243	line->elements[0].item,	str[val.chars] != '/')
2244	line->elements[insertHere].item,	continue;
	line->elements[insertHere].indent,
	insertHere);
	}
2245
2246	static void removeElement(struct singleLine * line, int removeHere) {	/* The subvolume mount point matches our input. */
	int i;
2247
2248	/* sanity check */	if (prfx < val.chars)
2249	if (removeHere >= line->numElements) return;	prfx = val.chars;
2250		}
2251		}
2252
2253	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);
2254
2255	free(line->elements[removeHere].item);	fclose(file);
2256		free(line);
2257		return prfx;
2258		}
2259
2260	if (removeHere > 1) {	int suitableImage(struct singleEntry *entry, const char *bootPrefix,
2261	/* previous argument gets this argument's post-indentation */	int skipRemoved, int flags)
2262	free(line->elements[removeHere-1].indent);	{
2263	line->elements[removeHere-1].indent =	struct singleLine *line;
2264	line->elements[removeHere].indent;	char *fullName;
2265	} else {	int i;
2266	free(line->elements[removeHere].indent);	char *dev;
2267	}	size_t rs;
2268		char *rootdev;
2269
2270		if (skipRemoved && entry->skip) {
2271		notSuitablePrintf(entry, 0, "marked to skip\n");
2272		return 0;
2273		}
2274
2275		line =
2276		getLineByType(LT_KERNEL | LT_HYPER | LT_KERNEL_EFI | LT_KERNEL_16,
2277		entry->lines);
2278		if (!line) {
2279		notSuitablePrintf(entry, 0, "no line found\n");
2280		return 0;
2281		}
2282		if (line->numElements < 2) {
2283		notSuitablePrintf(entry, 0, "line has only %d elements\n",
2284		line->numElements);
2285		return 0;
2286		}
2287
2288	/* now collapse the array, but don't bother to realloc smaller */	if (flags & GRUBBY_BADIMAGE_OKAY) {
2289	for (i = removeHere; i < line->numElements - 1; i++)	notSuitablePrintf(entry, 1, "\n");
2290	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;
2291	}	}
	}
2292
2293	if (!removeArgs) {	fullName = alloca(strlen(bootPrefix) +
2294	oldArgs = malloc(sizeof(*oldArgs));	strlen(line->elements[1].item) + 1);
2295	*oldArgs = NULL;	rs = getRootSpecifier(line->elements[1].item);
2296	} else {	int hasslash = endswith(bootPrefix, '/') ||
2297	if (poptParseArgvString(removeArgs, NULL, &oldArgs)) {	beginswith(line->elements[1].item + rs, '/');
2298	fprintf(stderr,	sprintf(fullName, "%s%s%s", bootPrefix, hasslash ? "" : "/",
2299	_("grubby: error separating arguments '%s'\n"), removeArgs);	line->elements[1].item + rs);
2300	free(newArgs);	if (access(fullName, R_OK)) {
2301	return 1;	notSuitablePrintf(entry, 0, "access to %s failed\n", fullName);
2302		return 0;
2303	}	}
2304	}	for (i = 2; i < line->numElements; i++)
2305		if (!strncasecmp(line->elements[i].item, "root=", 5))
2306		break;
2307		if (i < line->numElements) {
2308		dev = line->elements[i].item + 5;
2309		} else {
2310		/* look for a lilo style LT_ROOT line */
2311		line = getLineByType(LT_ROOT, entry->lines);
2312
2313		if (line && line->numElements >= 2) {
2314		dev = line->elements[1].item;
2315		} else {
2316		/* didn't succeed in finding a LT_ROOT, let's try
2317		* LT_KERNELARGS.  grub+multiboot uses LT_MBMODULE
2318		* for the args, so check that too.
2319		*/
2320		line =
2321		getLineByType(LT_KERNELARGS | LT_MBMODULE,
2322		entry->lines);
2323
2324		/* failed to find one */
2325		if (!line) {
2326		notSuitablePrintf(entry, 0, "no line found\n");
2327		return 0;
2328		}
2329
2330	useKernelArgs = (getKeywordByType(LT_KERNELARGS, cfg->cfi)	for (i = 1; i < line->numElements; i++)
2331	&& (!multibootArgs || cfg->cfi->mbConcatArgs));	if (!strncasecmp
2332		(line->elements[i].item, "root=", 5))
2333		break;
2334		if (i < line->numElements)
2335		dev = line->elements[i].item + 5;
2336		else {
2337		notSuitablePrintf(entry, 0,
2338		"no root= entry found\n");
2339		/* it failed too...  can't find root= */
2340		return 0;
2341		}
2342		}
2343		}
2344
2345	useRoot = (getKeywordByType(LT_ROOT, cfg->cfi)	dev = getpathbyspec(dev);
2346	&& !multibootArgs);	if (!getpathbyspec(dev)) {
2347		notSuitablePrintf(entry, 0, "can't find blkid entry for %s\n",
2348		dev);
2349		return 0;
2350		} else
2351		dev = getpathbyspec(dev);
2352
2353		rootdev = findDiskForRoot();
2354		if (!rootdev) {
2355		notSuitablePrintf(entry, 0, "can't find root device\n");
2356		return 0;
2357		}
2358
2359		if (!getuuidbydev(rootdev) || !getuuidbydev(dev)) {
2360		notSuitablePrintf(entry, 0,
2361		"uuid missing: rootdev %s, dev %s\n",
2362		getuuidbydev(rootdev), getuuidbydev(dev));
2363		free(rootdev);
2364		return 0;
2365		}
2366
2367		if (strcmp(getuuidbydev(rootdev), getuuidbydev(dev))) {
2368		notSuitablePrintf(entry, 0,
2369		"uuid mismatch: rootdev %s, dev %s\n",
2370		getuuidbydev(rootdev), getuuidbydev(dev));
2371		free(rootdev);
2372		return 0;
2373		}
2374
2375	for (; (entry = findEntryByPath(cfg, image, prefix, &index)); index++) {	free(rootdev);
2376		notSuitablePrintf(entry, 1, "\n");
2377
2378	if (multibootArgs && !entry->multiboot)	return 1;
2379	continue;	}
2380
2381	/* 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
2382	* LT_KERNELARGS, use that.  Otherwise use	is not NULL) which is not marked as skip */
2383	* LT_HYPER/LT_KERNEL/LT_MBMODULE lines.	struct singleEntry *findEntryByPath(struct grubConfig *config,
2384	*/	const char *kernel, const char *prefix,
2385	if (useKernelArgs) {	int *index)
2386	line = getLineByType(LT_KERNELARGS, entry->lines);	{
2387	if (!line) {	struct singleEntry *entry = NULL;
2388	/* no LT_KERNELARGS, need to add it */	struct singleLine *line;
2389	line = addLine(entry, cfg->cfi, LT_KERNELARGS,	int i;
2390	cfg->secondaryIndent, NULL);	char *chptr;
2391	}	enum lineType_e checkType = LT_KERNEL;
2392	firstElement = 1;
2393		if (isdigit(*kernel)) {
2394	} else if (multibootArgs) {	int *indexVars = alloca(sizeof(*indexVars) * strlen(kernel));
2395	line = getLineByType(LT_HYPER, entry->lines);
2396	if (!line) {	i = 0;
2397	/* a multiboot entry without LT_HYPER? */	indexVars[i] = strtol(kernel, &chptr, 10);
2398	continue;	while (*chptr == ',') {
2399	}	i++;
2400	firstElement = 2;	kernel = chptr + 1;
2401		indexVars[i] = strtol(kernel, &chptr, 10);
2402	} else {	}
	line = getLineByType(LT_KERNEL|LT_MBMODULE, entry->lines);
	if (!line) {
	/* no LT_KERNEL or LT_MBMODULE in this entry? */
	continue;
	}
	firstElement = 2;
	}
2403
2404	/* handle the elilo case which does:	if (*chptr) {
2405	*   append="hypervisor args -- kernel args"	/* can't parse it, bail */
2406	*/	return NULL;
2407	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;
	}
	}
2408
2409	if (i < line->numElements && doreplace) {	indexVars[i + 1] = -1;
2410	/* direct replacement */
2411	free(line->elements[i].item);	i = 0;
2412	line->elements[i].item = strdup(*arg);	if (index) {
2413		while (i < *index) {
2414		i++;
2415		if (indexVars[i] == -1)
2416		return NULL;
2417		}
2418		}
2419
2420	} else if (useRoot && !strncmp(*arg, "root=/dev/", 10)) {	entry = findEntryByIndex(config, indexVars[i]);
2421	/* root= replacement */	if (!entry)
2422	rootLine = getLineByType(LT_ROOT, entry->lines);	return NULL;
2423	if (rootLine) {
2424	free(rootLine->elements[1].item);	line =
2425	rootLine->elements[1].item = strdup(*arg + 5);	getLineByType(LT_KERNEL | LT_HYPER | LT_KERNEL_EFI |
2426		LT_KERNEL_16, entry->lines);
2427		if (!line)
2428		return NULL;
2429
2430		if (index)
2431		*index = indexVars[i];
2432		return entry;
2433		}
2434
2435		if (!strcmp(kernel, "DEFAULT")) {
2436		if (index && *index > config->defaultImage) {
2437		entry = NULL;
2438	} else {	} else {
2439	rootLine = addLine(entry, cfg->cfi, LT_ROOT,	entry = findEntryByIndex(config, config->defaultImage);
2440	cfg->secondaryIndent, *arg + 5);	if (entry && entry->skip)
2441		entry = NULL;
2442		else if (index)
2443		*index = config->defaultImage;
2444		}
2445		} else if (!strcmp(kernel, "ALL")) {
2446		if (index)
2447		i = *index;
2448		else
2449		i = 0;
2450
2451		while ((entry = findEntryByIndex(config, i))) {
2452		if (!entry->skip)
2453		break;
2454		i++;
2455	}	}
	}
2456
2457	else {	if (entry && index)
2458	/* insert/append */	*index = i;
2459	insertElement(line, *arg, i, cfg->cfi);	} else {
2460	usedElements = realloc(usedElements, line->numElements *	if (index)
2461	sizeof(*usedElements));	i = *index;
2462	memmove(&usedElements[i + 1], &usedElements[i],	else
2463	line->numElements - i - 1);	i = 0;
2464	usedElements[i] = 1;
2465		if (!strncmp(kernel, "TITLE=", 6)) {
2466	/* if we updated a root= here even though there is a	prefix = "";
2467	LT_ROOT available we need to remove the LT_ROOT entry	checkType = LT_TITLE | LT_MENUENTRY;
2468	(this will happen if we switch from a device to a label) */	kernel += 6;
2469	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);
	}
	}
2470
2471	free(newArgs);	for (entry = findEntryByIndex(config, i); entry;
2472	free(oldArgs);	entry = entry->next, i++) {
2473		if (entry->skip)
2474		continue;
2475
2476		dbgPrintf("findEntryByPath looking for %d %s in %p\n",
2477		checkType, kernel, entry);
2478
2479		/* check all the lines matching checkType */
2480		for (line = entry->lines; line; line = line->next) {
2481		enum lineType_e ct = checkType;
2482		if (entry->multiboot && checkType == LT_KERNEL)
2483		ct = LT_KERNEL | LT_KERNEL_EFI |
2484		LT_MBMODULE | LT_HYPER |
2485		LT_KERNEL_16;
2486		else if (checkType & LT_KERNEL)
2487		ct = checkType | LT_KERNEL_EFI |
2488		LT_KERNEL_16;
2489		line = getLineByType(ct, line);
2490		if (!line)
2491		break; /* not found in this entry */
2492
2493		if (line && line->type != LT_MENUENTRY &&
2494		line->numElements >= 2) {
2495		if (!strcmp(line->elements[1].item +
2496		getRootSpecifier(
2497		line->elements[1].item),
2498		kernel + strlen(prefix)))
2499		break;
2500		}
2501		if (line->type == LT_MENUENTRY &&
2502		!strcmp(line->elements[1].item, kernel))
2503		break;
2504		}
2505
2506	return 0;	/* make sure this entry has a kernel identifier; this skips
2507	}	* non-Linux boot entries (could find netbsd etc, though, which is
2508		* unfortunate)
2509		*/
2510		if (line
2511		&& getLineByType(LT_KERNEL | LT_HYPER |
2512		LT_KERNEL_EFI | LT_KERNEL_16,
2513		entry->lines))
2514		break; /* found 'im! */
2515		}
2516
2517	int updateImage(struct grubConfig * cfg, const char * image,	if (index)
2518	const char * prefix, const char * addArgs,	*index = i;
2519	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;
	}
2520
2521	return 0;	return entry;
2522	}	}
2523
2524	int checkDeviceBootloader(const char * device, const unsigned char * boot) {	struct singleEntry *findEntryByTitle(struct grubConfig *cfg, char *title,
2525	int fd;	int *index)
2526	unsigned char bootSect[512];	{
2527	int offset;	struct singleEntry *entry;
2528		struct singleLine *line;
2529	fd = open(device, O_RDONLY);	int i;
2530	if (fd < 0) {	char *newtitle;
2531	fprintf(stderr, _("grubby: unable to open %s: %s\n"),
2532	device, strerror(errno));	for (i = 0, entry = cfg->entries; entry; entry = entry->next, i++) {
2533	return 1;	if (index && i < *index)
2534	}	continue;
2535		line = getLineByType(LT_TITLE, entry->lines);
2536	if (read(fd, bootSect, 512) != 512) {	if (!line)
2537	fprintf(stderr, _("grubby: unable to read %s: %s\n"),	line = getLineByType(LT_MENUENTRY, entry->lines);
2538	device, strerror(errno));	if (!line)
2539	return 1;	continue;
2540	}	newtitle = grub2ExtractTitle(line);
2541	close(fd);	if (!newtitle)
2542		continue;
2543		if (!strcmp(title, newtitle))
2544		break;
2545		}
2546
2547	/* first three bytes should match, a jmp short should be in there */	if (!entry)
2548	if (memcmp(boot, bootSect, 3))	return NULL;
	return 0;
2549
2550	if (boot[1] == 0xeb) {	if (index)
2551	offset = boot[2] + 2;	*index = i;
2552	} else if (boot[1] == 0xe8 || boot[1] == 0xe9) {	return entry;
2553	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;
	}
2554
2555	if (memcmp(boot + offset, bootSect + offset, CODE_SEG_SIZE))	struct singleEntry *findEntryByIndex(struct grubConfig *cfg, int index)
2556	return 0;	{
2557		struct singleEntry *entry;
2558
2559		entry = cfg->entries;
2560		while (index && entry) {
2561		entry = entry->next;
2562		index--;
2563		}
2564
2565	return 2;	return entry;
2566	}	}
2567
2568	int checkLiloOnRaid(char * mdDev, const unsigned char * boot) {	/* Find a good template to use for the new kernel. An entry is
2569	int fd;	* good if the kernel and mkinitrd exist (even if the entry
2570	char buf[65536];	* is going to be removed). Try and use the default entry, but
2571	char * end;	* if that doesn't work just take the first. If we can't find one,
2572	char * chptr;	* bail. */
2573	char * chptr2;	struct singleEntry *findTemplate(struct grubConfig *cfg, const char *prefix,
2574	int rc;	int *indexPtr, int skipRemoved, int flags)
2575		{
2576		struct singleEntry *entry, *entry2;
2577		int index;
2578
2579	/* it's on raid; we need to parse /proc/mdstat and check all of the	if (cfg->cfi->defaultIsSaved) {
2580	*raw* devices listed in there */	if (cfg->cfi->getEnv) {
2581		char *defTitle =
2582		cfg->cfi->getEnv(cfg->cfi, "saved_entry");
2583		if (defTitle) {
2584		int index = 0;
2585		if (isnumber(defTitle)) {
2586		index = atoi(defTitle);
2587		entry = findEntryByIndex(cfg, index);
2588		} else {
2589		entry =
2590		findEntryByTitle(cfg, defTitle,
2591		&index);
2592		}
2593		if (entry
2594		&& suitableImage(entry, prefix, skipRemoved,
2595		flags)) {
2596		cfg->defaultImage = index;
2597		if (indexPtr)
2598		*indexPtr = index;
2599		return entry;
2600		}
2601		}
2602		}
2603		} else if (cfg->defaultImage >= FIRST_ENTRY_INDEX) {
2604		entry = findEntryByIndex(cfg, cfg->defaultImage);
2605		if (entry && suitableImage(entry, prefix, skipRemoved, flags)) {
2606		if (indexPtr)
2607		*indexPtr = cfg->defaultImage;
2608		return entry;
2609		}
2610		}
2611
2612	if (!strncmp(mdDev, "/dev/", 5))	index = 0;
2613	mdDev += 5;	while ((entry = findEntryByIndex(cfg, index))) {
2614		if (suitableImage(entry, prefix, skipRemoved, flags)) {
2615		int j, unmodifiedIndex;
2616
2617		unmodifiedIndex = index;
2618
2619		for (j = 0; j < unmodifiedIndex; j++) {
2620		entry2 = findEntryByIndex(cfg, j);
2621		if (entry2->skip)
2622		index--;
2623		}
2624		if (indexPtr)
2625		*indexPtr = index;
2626
2627	if ((fd = open("/proc/mdstat", O_RDONLY)) < 0) {	return entry;
2628	fprintf(stderr, _("grubby: failed to open /proc/mdstat: %s\n"),	}
	strerror(errno));
	return 2;
	}
2629
2630	rc = read(fd, buf, sizeof(buf) - 1);	index++;
2631	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';
2632
2633	chptr = buf;	fprintf(stderr,
2634	while (*chptr) {	_("grubby fatal error: unable to find a suitable template\n"));
	end = strchr(chptr, '\n');
	if (!end) break;
	*end = '\0';
2635
2636	if (!strncmp(chptr, mdDev, strlen(mdDev)) &&	return NULL;
2637	chptr[strlen(mdDev)] == ' ') {	}
2638
2639	/* found the device */	char *findBootPrefix(void)
2640	while (*chptr && *chptr != ':') chptr++;	{
2641	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++;
	}
2642
2643	/*  we're good to go */	stat("/", &sb);
2644	return 2;	#ifdef __ia64__
2645	}	stat("/boot/efi/EFI/redhat/", &sb2);
2646		#else
2647		stat("/boot", &sb2);
2648		#endif
2649
2650	chptr = end + 1;	if (sb.st_dev == sb2.st_dev)
2651	}	return strdup("");
2652
2653	fprintf(stderr,	#ifdef __ia64__
2654	_("grubby: raid device /dev/%s not found in /proc/mdstat\n"),	return strdup("/boot/efi/EFI/redhat/");
2655	mdDev);	#else
2656	return 0;	return strdup("/boot");
2657		#endif
2658	}	}
2659
2660	int checkForLilo(struct grubConfig * config) {	void markRemovedImage(struct grubConfig *cfg, const char *image,
2661	int fd;	const char *prefix)
2662	unsigned char boot[512];	{
2663	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;
	}
2664
2665	if (line->numElements != 2) return 1;	if (!image)
2666		return;
2667
2668	fd = open("/boot/boot.b", O_RDONLY);	/* check and see if we're removing the default image */
2669	if (fd < 0) {	if (isdigit(*image)) {
2670	fprintf(stderr, _("grubby: unable to open %s: %s\n"),	entry = findEntryByPath(cfg, image, prefix, NULL);
2671	"/boot/boot.b", strerror(errno));	if (entry)
2672	return 1;	entry->skip = 1;
2673	}	return;
2674		}
2675
2676	if (read(fd, boot, 512) != 512) {	while ((entry = findEntryByPath(cfg, image, prefix, NULL)))
2677	fprintf(stderr, _("grubby: unable to read %s: %s\n"),	entry->skip = 1;
2678	"/boot/boot.b", strerror(errno));	}
	return 1;
	}
	close(fd);
2679
2680	if (!strncmp("/dev/md", line->elements[1].item, 7))	void setDefaultImage(struct grubConfig *config, int isAddingBootEntry,
2681	return checkLiloOnRaid(line->elements[1].item, boot);	const char *defaultKernelPath, int newBootEntryIsDefault,
2682		const char *prefix, int flags,
2683		int newDefaultBootEntryIndex, int newBootEntryIndex)
2684		{
2685		struct singleEntry *bootEntry, *newDefault;
2686		int indexToVerify, firstKernelEntryIndex, currentLookupIndex;
2687
2688	return checkDeviceBootloader(line->elements[1].item, boot);	/* initialize */
2689	}	currentLookupIndex = FIRST_ENTRY_INDEX;
2690
2691	int checkForGrub(struct grubConfig * config) {	/* handle the two cases where the user explictly picks the default
2692	int fd;	* boot entry index as it would exist post-modification */
	unsigned char bootSect[512];
	char * boot;
2693
2694	if (parseSysconfigGrub(NULL, &boot))	/* Case 1: user chose to make the latest boot entry the default */
2695	return 0;	if (newBootEntryIsDefault) {
2696		config->defaultImage = newBootEntryIndex;
2697		return;
2698		}
2699
2700	/* assume grub is not installed -- not an error condition */	/* Case 2: user picked an arbitrary index as the default boot entry */
2701	if (!boot)	if (newDefaultBootEntryIndex >= FIRST_ENTRY_INDEX) {
2702	return 0;	indexToVerify = newDefaultBootEntryIndex;
2703
2704	fd = open("/boot/grub/stage1", O_RDONLY);	/* user chose to make latest boot entry the default */
2705	if (fd < 0)	if (newDefaultBootEntryIndex == newBootEntryIndex) {
2706	/* this doesn't exist if grub hasn't been installed */	config->defaultImage = newBootEntryIndex;
2707	return 0;	return;
2708		}
2709
2710	if (read(fd, bootSect, 512) != 512) {	/* the user picks the default index based on the
2711	fprintf(stderr, _("grubby: unable to read %s: %s\n"),	* order of the bootloader configuration after
2712	"/boot/grub/stage1", strerror(errno));	* modification; ensure we are checking for the
2713	close(fd);	* existence of the correct entry */
2714	return 1;	if (newBootEntryIndex < newDefaultBootEntryIndex) {
2715	}	if (!config->isModified)
2716	close(fd);	indexToVerify--;
2717		}
2718
2719	return checkDeviceBootloader(boot, bootSect);	/* verify the user selected index will exist */
2720	}	if (findEntryByIndex(config, indexToVerify)) {
2721		config->defaultImage = newDefaultBootEntryIndex;
2722		} else {
2723		config->defaultImage = NO_DEFAULT_ENTRY;
2724		}
2725
2726	int checkForExtLinux(struct grubConfig * config) {	return;
2727	int fd;	}
	unsigned char bootSect[512];
	char * boot;
	char executable[] = "/boot/extlinux/extlinux";
2728
2729	printf("entered: checkForExtLinux()\n");	/* handle cases where the index value may shift */
2730
2731	if (parseSysconfigGrub(NULL, &boot))	/* check validity of existing default or first-entry-found
2732	return 0;	selection */
2733		if (defaultKernelPath) {
2734		/* we must initialize this */
2735		firstKernelEntryIndex = 0;
2736		/* user requested first-entry-found */
2737		if (!findEntryByPath(config, defaultKernelPath,
2738		prefix, &firstKernelEntryIndex)) {
2739		/* don't change default if can't find match */
2740		config->defaultImage = NO_DEFAULT_ENTRY;
2741		return;
2742		}
2743
2744	/* assume grub is not installed -- not an error condition */	config->defaultImage = firstKernelEntryIndex;
	if (!boot)
	return 0;
2745
2746	fd = open(executable, O_RDONLY);	/* this is where we start looking for decrement later */
2747	if (fd < 0)	currentLookupIndex = config->defaultImage;
	/* this doesn't exist if grub hasn't been installed */
	return 0;
2748
2749	if (read(fd, bootSect, 512) != 512) {	if (isAddingBootEntry && !config->isModified &&
2750	fprintf(stderr, _("grubby: unable to read %s: %s\n"),	(newBootEntryIndex < config->defaultImage)) {
2751	executable, strerror(errno));	/* increment because new entry added before default */
2752	return 1;	config->defaultImage++;
2753	}	}
2754	close(fd);	} else {
2755		/* check to see if the default is stored in the environment */
2756		if (config->defaultImage < FIRST_ENTRY_INDEX) {
2757		if (config->defaultImage == DEFAULT_SAVED || config->defaultImage == DEFAULT_SAVED_GRUB2)
2758		{
2759		if (config->cfi->defaultIsSaved) {
2760		if (config->cfi->getEnv) {
2761		char *defaultTitle = config->cfi->getEnv(config->cfi, "saved_entry");
2762
2763		if (defaultTitle) {
2764		if (isnumber(defaultTitle)) {
2765		currentLookupIndex = atoi(defaultTitle);
2766		} else {
2767		findEntryByTitle(config, defaultTitle, &currentLookupIndex);
2768		}
2769		/* set the default Image to an actual index */
2770		config->defaultImage = currentLookupIndex;
2771		}
2772		}
2773		}
2774		}
2775		} else {
2776		/* use pre-existing default entry from the file*/
2777		currentLookupIndex = config->defaultImage;
2778		}
2779
2780	return checkDeviceBootloader(boot, bootSect);	if (isAddingBootEntry
2781	}	&& (newBootEntryIndex <= config->defaultImage)) {
2782		config->defaultImage++;
2783
2784	static char * getRootSpecifier(char * str) {	if (config->isModified) {
2785	char * idx, * rootspec = NULL;	currentLookupIndex++;
2786		}
2787		}
2788		}
2789
2790	if (*str == '(') {	/* sanity check - is this entry index valid? */
2791	idx = rootspec = strdup(str);	bootEntry = findEntryByIndex(config, currentLookupIndex);
	while(*idx && (*idx != ')') && (!isspace(*idx))) idx++;
	*(++idx) = '\0';
	}
	return rootspec;
	}
2792
2793	static char * getInitrdVal(struct grubConfig * config,	if ((bootEntry && bootEntry->skip) || !bootEntry) {
2794	const char * prefix, struct singleLine *tmplLine,	/* entry is to be skipped or is invalid */
2795	const char * newKernelInitrd,	if (isAddingBootEntry) {
2796	char ** extraInitrds, int extraInitrdCount)	config->defaultImage = newBootEntryIndex;
2797	{	return;
2798	char *initrdVal, *end;	}
2799	int i;	newDefault =
2800	size_t totalSize;	findTemplate(config, prefix, &config->defaultImage, 1,
2801	size_t prefixLen;	flags);
2802	char separatorChar;	if (!newDefault) {
2803		config->defaultImage = NO_DEFAULT_ENTRY;
2804	prefixLen = strlen(prefix);	}
2805	totalSize = strlen(newKernelInitrd) - prefixLen + 1 /* \0 */;
2806		return;
2807	for (i = 0; i < extraInitrdCount; i++) {	}
2808	totalSize += sizeof(separatorChar);
2809	totalSize += strlen(extraInitrds[i]) - prefixLen;	currentLookupIndex--;
2810	}
2811		/* decrement index by the total number of entries deleted */
2812
2813	initrdVal = end = malloc(totalSize);	for (indexToVerify = currentLookupIndex;
2814		indexToVerify >= FIRST_ENTRY_INDEX; indexToVerify--) {
2815
2816	end = stpcpy (end, newKernelInitrd + prefixLen);	bootEntry = findEntryByIndex(config, indexToVerify);
2817
2818	separatorChar = getKeywordByType(LT_INITRD, config->cfi)->separatorChar;	if (bootEntry && bootEntry->skip) {
2819	for (i = 0; i < extraInitrdCount; i++) {	config->defaultImage--;
2820	const char *extraInitrd;	}
2821		}
2822		}
2823
2824		void setFallbackImage(struct grubConfig *config, int hasNew)
2825		{
2826		struct singleEntry *entry, *entry2;
2827	int j;	int j;
2828
2829	extraInitrd = extraInitrds[i] + prefixLen;	if (config->fallbackImage == -1)
2830	/* 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;
2831
2832	if (j != tmplLine->numElements)	entry = findEntryByIndex(config, config->fallbackImage);
2833	continue;	if (!entry || entry->skip) {
2834		config->fallbackImage = -1;
2835		return;
2836	}	}
2837
2838	*end++ = separatorChar;	if (hasNew)
2839	end = stpcpy(end, extraInitrd);	config->fallbackImage++;
	}
2840
2841	return initrdVal;	/* count the number of entries erased before this one */
2842		for (j = 0; j < config->fallbackImage; j++) {
2843		entry2 = findEntryByIndex(config, j);
2844		if (entry2->skip)
2845		config->fallbackImage--;
2846		}
2847	}	}
2848
2849	int addNewKernel(struct grubConfig * config, struct singleEntry * template,	void displayEntry(struct grubConfig *config, struct singleEntry *entry, const char *prefix, int index)
2850	const char * prefix,	{
2851	char * newKernelPath, char * newKernelTitle,	struct singleLine *line;
2852	char * newKernelArgs, char * newKernelInitrd,	char *root = NULL;
2853	char ** extraInitrds, int extraInitrdCount,	int i;
2854	char * newMBKernel, char * newMBKernelArgs) {	int j;
	struct singleEntry * new;
	struct singleLine * newLine = NULL, * tmplLine = NULL, * masterLine = NULL;
	int needs;
	char * chptr;
	if (!newKernelPath) return 0;
	/* if the newKernelTitle is too long silently munge it into something
	* we can live with. truncating is first check, then we'll just mess with
	* it until it looks better */
	if (config->cfi->maxTitleLength &&
	(strlen(newKernelTitle) > config->cfi->maxTitleLength)) {
	char * buf = alloca(config->cfi->maxTitleLength + 7);
	char * numBuf = alloca(config->cfi->maxTitleLength + 1);
	int i = 1;
2855
2856	sprintf(buf, "TITLE=%.*s", config->cfi->maxTitleLength, newKernelTitle);	printf("index=%d\n", index);
2857	while (findEntryByPath(config, buf, NULL, NULL)) {
2858	sprintf(numBuf, "%d", i++);	line =
2859	strcpy(buf + strlen(buf) - strlen(numBuf), numBuf);	getLineByType(LT_KERNEL | LT_HYPER | LT_KERNEL_EFI | LT_KERNEL_16,
2860		entry->lines);
2861		if (!line) {
2862		printf("non linux entry\n");
2863		return;
2864	}	}
2865
2866	newKernelTitle = buf + 6;	if (!strncmp(prefix, line->elements[1].item, strlen(prefix)))
2867	}	printf("kernel=%s\n", line->elements[1].item);
2868		else
2869		printf("kernel=%s%s\n", prefix, line->elements[1].item);
2870
2871	new = malloc(sizeof(*new));	if (line->numElements >= 3) {
2872	new->skip = 0;	printf("args=\"");
2873	new->multiboot = 0;	i = 2;
2874	new->next = config->entries;	while (i < line->numElements) {
2875	new->lines = NULL;	if (!strncmp(line->elements[i].item, "root=", 5)) {
2876	config->entries = new;	root = line->elements[i].item + 5;
2877		} else {
2878	/* copy/update from the template */	printf("%s%s", line->elements[i].item,
2879	needs = NEED_KERNEL | NEED_TITLE;	line->elements[i].indent);
2880	if (newKernelInitrd)	}
	needs |= NEED_INITRD;
	if (newMBKernel) {
	needs |= NEED_MB;
	new->multiboot = 1;
	}
2881
2882	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->entrySeparator) {
	case LT_KERNEL:
	if (new->multiboot && config->cfi->mbHyperFirst) {
	/* fall through to LT_HYPER */
	} else {
	newLine = addLine(new, config->cfi, LT_KERNEL,
	config->primaryIndent,
	newKernelPath + strlen(prefix));
	needs &= ~NEED_KERNEL;
	break;
2883	}	}
2884		printf("\"\n");
2885		} else {
2886		line = getLineByType(LT_KERNELARGS, entry->lines);
2887		if (line) {
2888		char *s;
2889
2890		printf("args=\"");
2891		i = 1;
2892		while (i < line->numElements) {
2893		if (!strncmp
2894		(line->elements[i].item, "root=", 5)) {
2895		root = line->elements[i].item + 5;
2896		} else {
2897		s = line->elements[i].item;
2898
2899	case LT_HYPER:	printf("%s%s", s,
2900	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++;
	}
2901	}	}
2902	x++;
2903		i++;
2904	}	}
2905	newLine = addLine(new, config->cfi, LT_TITLE,
2906	config->primaryIndent, templabel);	s = line->elements[i - 1].indent;
2907	free(templabel);	printf("\"\n");
	}else{
	newLine = addLine(new, config->cfi, LT_TITLE,
	config->primaryIndent, newKernelTitle);
2908	}	}
2909	needs &= ~NEED_TITLE;	}
	break;
2910
2911	default:	if (!root) {
2912	abort();	line = getLineByType(LT_ROOT, entry->lines);
2913		if (line && line->numElements >= 2)
2914		root = line->elements[1].item;
2915	}	}
	}
2916
2917	/* add the remainder of the lines, i.e. those that either	if (root) {
2918	* weren't present in the template, or in the case of no template,	char *s = alloca(strlen(root) + 1);
	* all the lines following the entrySeparator.
	*/
	if (needs & NEED_TITLE) {
	newLine = addLine(new, config->cfi, LT_TITLE,
	config->secondaryIndent,
	newKernelTitle);
	needs &= ~NEED_TITLE;
	}
	if ((needs & NEED_MB) && config->cfi->mbHyperFirst) {
	newLine = addLine(new, config->cfi, LT_HYPER,
	config->secondaryIndent,
	newMBKernel + strlen(prefix));
	needs &= ~NEED_MB;
	}
	if (needs & NEED_KERNEL) {
	newLine = addLine(new, config->cfi,
	(new->multiboot && getKeywordByType(LT_MBMODULE,
	config->cfi)) ?
	LT_MBMODULE : LT_KERNEL,
	config->secondaryIndent,
	newKernelPath + strlen(prefix));
	needs &= ~NEED_KERNEL;
	}
	if (needs & NEED_MB) {
	newLine = addLine(new, config->cfi, LT_HYPER,
	config->secondaryIndent,
	newMBKernel + strlen(prefix));
	needs &= ~NEED_MB;
	}
	if (needs & NEED_INITRD) {
	char *initrdVal;
	initrdVal = getInitrdVal(config, prefix, NULL, newKernelInitrd, extraInitrds, extraInitrdCount);
	newLine = addLine(new, config->cfi,
	(new->multiboot && getKeywordByType(LT_MBMODULE,
	config->cfi)) ?
	LT_MBMODULE : LT_INITRD,
	config->secondaryIndent,
	initrdVal);
	free(initrdVal);
	needs &= ~NEED_INITRD;
	}
2919
2920	if (needs) {	strcpy(s, root);
2921	printf(_("grubby: needs=%d, aborting\n"), needs);	if (s[strlen(s) - 1] == '"')
2922	abort();	s[strlen(s) - 1] = '\0';
2923	}	/* make sure the root doesn't have a trailing " */
2924		printf("root=%s\n", s);
2925		}
2926
2927	if (updateImage(config, "0", prefix, newKernelArgs, NULL,	line =
2928	newMBKernelArgs, NULL)) return 1;	getLineByType(LT_INITRD | LT_INITRD_EFI | LT_INITRD_16,
2929		entry->lines);
2930
2931	return 0;	if (line && line->numElements >= 2) {
2932		if (!strncmp(prefix, line->elements[1].item, strlen(prefix)))
2933		printf("initrd=");
2934		else
2935		printf("initrd=%s", prefix);
2936
2937		for (i = 1; i < line->numElements; i++)
2938		printf("%s%s", line->elements[i].item,
2939		line->elements[i].indent);
2940		printf("\n");
2941		}
2942
2943		line = getLineByType(LT_TITLE, entry->lines);
2944		if (line) {
2945		char *entryTitle;
2946		/* if we can extractTitle, then it's a zipl config and
2947		* if not then we go ahead with what's existed prior */
2948		entryTitle = extractTitle(config, line);
2949		if (!entryTitle) {
2950		entryTitle=line->elements[1].item;
2951		}
2952		printf("title=%s\n", entryTitle);
2953		} else {
2954		char *title;
2955		line = getLineByType(LT_MENUENTRY, entry->lines);
2956		if (line) {
2957		title = grub2ExtractTitle(line);
2958		if (title)
2959		printf("title=%s\n", title);
2960		}
2961		}
2962
2963		for (j = 0, line = entry->lines; line; line = line->next) {
2964		if ((line->type & LT_MBMODULE) && line->numElements >= 2) {
2965		if (!strncmp
2966		(prefix, line->elements[1].item, strlen(prefix)))
2967		printf("mbmodule%d=", j);
2968		else
2969		printf("mbmodule%d=%s", j, prefix);
2970
2971		for (i = 1; i < line->numElements; i++)
2972		printf("%s%s", line->elements[i].item,
2973		line->elements[i].indent);
2974		printf("\n");
2975		j++;
2976		}
2977		}
2978	}	}
2979
2980	static void traceback(int signum)	int isSuseSystem(void)
2981	{	{
2982	void *array[40];	const char *path;
2983	size_t size;	const static char default_path[] = "/etc/SuSE-release";
2984
2985	signal(SIGSEGV, SIG_DFL);	if ((path = getenv("GRUBBY_SUSE_RELEASE")) == NULL)
2986	memset(array, '\0', sizeof (array));	path = default_path;
2987	size = backtrace(array, 40);
2988		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);
2989	return 1;	return 1;
2990	}	return 0;
2991	break;	}
2992
2993		int isSuseGrubConf(const char *path)
2994		{
2995		FILE *grubConf;
2996		char *line = NULL;
2997		size_t len = 0, res = 0;
2998
2999		grubConf = fopen(path, "r");
3000		if (!grubConf) {
3001		dbgPrintf("Could not open SuSE configuration file '%s'\n",
3002		path);
3003		return 0;
3004		}
3005
3006		while ((res = getline(&line, &len, grubConf)) != -1) {
3007		if (!strncmp(line, "setup", 5)) {
3008		fclose(grubConf);
3009		free(line);
3010		return 1;
3011		}
3012	}	}
	}
3013
3014	if (arg < -1) {	dbgPrintf("SuSE configuration file '%s' does not appear to be valid\n",
3015	fprintf(stderr, _("grubby: bad argument %s: %s\n"),	path);
	poptBadOption(optCon, POPT_BADOPTION_NOALIAS),
	poptStrerror(arg));
	return 1;
	}
3016
3017	if ((chptr = poptGetArg(optCon))) {	fclose(grubConf);
3018	fprintf(stderr, _("grubby: unexpected argument %s\n"), chptr);	free(line);
3019	return 1;	return 0;
3020	}	}
3021
3022	if ((configureLilo + configureGrub + configureELilo +	int suseGrubConfGetLba(const char *path, int *lbaPtr)
3023	configureYaboot + configureSilo + configureZipl +	{
3024	configureExtLinux ) > 1) {	FILE *grubConf;
3025	fprintf(stderr, _("grubby: cannot specify multiple bootloaders\n"));	char *line = NULL;
3026	return 1;	size_t res = 0, len = 0;
	} else if (bootloaderProbe && grubConfig) {
	fprintf(stderr,
	_("grubby: cannot specify config file with --bootloader-probe\n"));
	return 1;
	} else if (configureLilo) {
	cfi = &liloConfigType;
	} else if (configureGrub) {
	cfi = &grubConfigType;
	} else if (configureELilo) {
	cfi = &eliloConfigType;
	} else if (configureYaboot) {
	cfi = &yabootConfigType;
	} else if (configureSilo) {
	cfi = &siloConfigType;
	} else if (configureZipl) {
	cfi = &ziplConfigType;
	} else if (configureExtLinux) {
	cfi = &extlinuxConfigType;
	useextlinuxmenu=1;
	}
3027
3028	if (!cfi) {	if (!path)
3029	#ifdef __ia64__	return 1;
3030	cfi = &eliloConfigType;	if (!lbaPtr)
3031	#elif __powerpc__	return 1;
	cfi = &yabootConfigType;
	#elif __sparc__
	cfi = &siloConfigType;
	#elif __s390__
	cfi = &ziplConfigType;
	#elif __s390x__
	cfi = &ziplConfigtype;
	#else
	cfi = &grubConfigType;
	#endif
	}
3032
3033	if (!grubConfig)	grubConf = fopen(path, "r");
3034	grubConfig = cfi->defaultConfig;	if (!grubConf)
3035		return 1;
3036
3037	if (bootloaderProbe && (displayDefault || kernelInfo || newKernelVersion ||	while ((res = getline(&line, &len, grubConf)) != -1) {
3038	newKernelPath || removeKernelPath || makeDefault ||	if (line[res - 1] == '\n')
3039	defaultKernel)) {	line[res - 1] = '\0';
3040	fprintf(stderr, _("grubby: --bootloader-probe may not be used with "	else if (len > res)
3041	"specified option"));	line[res] = '\0';
3042	return 1;	else {
3043	}	line = realloc(line, res + 1);
3044		line[res] = '\0';
3045		}
3046
3047	if ((displayDefault || kernelInfo) && (newKernelVersion || newKernelPath ||	if (!strncmp(line, "setup", 5)) {
3048	removeKernelPath)) {	if (strstr(line, "--force-lba")) {
3049	fprintf(stderr, _("grubby: --default-kernel and --info may not "	*lbaPtr = 1;
3050	"be used when adding or removing kernels\n"));	} else {
3051	return 1;	*lbaPtr = 0;
3052	}	}
3053		dbgPrintf("lba: %i\n", *lbaPtr);
3054		break;
3055		}
3056		}
3057
3058	if (newKernelPath && !newKernelTitle) {	free(line);
3059	fprintf(stderr, _("grubby: kernel title must be specified\n"));	fclose(grubConf);
3060	return 1;	return 0;
3061	} else if (!newKernelPath && (newKernelTitle  || copyDefault ||	}
	(newKernelInitrd && !updateKernelPath)||
	makeDefault || extraInitrdCount > 0)) {
	fprintf(stderr, _("grubby: kernel path expected\n"));
	return 1;
	}
3062
3063	if (newKernelPath && updateKernelPath) {	int suseGrubConfGetInstallDevice(const char *path, char **devicePtr)
3064	fprintf(stderr, _("grubby: --add-kernel and --update-kernel may"	{
3065	"not be used together"));	FILE *grubConf;
3066	return 1;	char *line = NULL;
3067	}	size_t res = 0, len = 0;
3068		char *lastParamPtr = NULL;
3069		char *secLastParamPtr = NULL;
3070		char installDeviceNumber = '\0';
3071		char *bounds = NULL;
3072
3073	if (makeDefault && defaultKernel) {	if (!path)
3074	fprintf(stderr, _("grubby: --make-default and --default-kernel "	return 1;
3075	"may not be used together\n"));	if (!devicePtr)
3076	return 1;	return 1;
	} else if (defaultKernel && removeKernelPath &&
	!strcmp(defaultKernel, removeKernelPath)) {
	fprintf(stderr, _("grubby: cannot make removed kernel the default\n"));
	return 1;
	} else if (defaultKernel && newKernelPath &&
	!strcmp(defaultKernel, newKernelPath)) {
	makeDefault = 1;
	defaultKernel = NULL;
	}
3077
3078	if (!strcmp(grubConfig, "-") && !outputFile) {	grubConf = fopen(path, "r");
3079	fprintf(stderr, _("grubby: output file must be specified if stdin "	if (!grubConf)
3080	"is used\n"));	return 1;
	return 1;
	}
3081
3082	if (!removeKernelPath && !newKernelPath && !displayDefault && !defaultKernel	while ((res = getline(&line, &len, grubConf)) != -1) {
3083	&& !kernelInfo && !bootloaderProbe && !updateKernelPath	if (strncmp(line, "setup", 5))
3084	&& !removeMBKernel) {	continue;
3085	fprintf(stderr, _("grubby: no action specified\n"));
3086	return 1;	if (line[res - 1] == '\n')
3087	}	line[res - 1] = '\0';
3088		else if (len > res)
3089		line[res] = '\0';
3090		else {
3091		line = realloc(line, res + 1);
3092		line[res] = '\0';
3093		}
3094
3095	flags |= badImageOkay ? GRUBBY_BADIMAGE_OKAY : 0;	lastParamPtr = bounds = line + res;
3096
3097	if (cfi->needsBootPrefix) {	/* Last parameter in grub may be an optional IMAGE_DEVICE */
3098	if (!bootPrefix) {	while (!isspace(*lastParamPtr))
3099	bootPrefix = findBootPrefix();	lastParamPtr--;
3100	if (!bootPrefix) return 1;	lastParamPtr++;
3101	} else {
3102	/* this shouldn't end with a / */	secLastParamPtr = lastParamPtr - 2;
3103	if (bootPrefix[strlen(bootPrefix) - 1] == '/')	dbgPrintf("lastParamPtr: %s\n", lastParamPtr);
3104	bootPrefix[strlen(bootPrefix) - 1] = '\0';
3105		if (lastParamPtr + 3 > bounds) {
3106		dbgPrintf("lastParamPtr going over boundary");
3107		fclose(grubConf);
3108		free(line);
3109		return 1;
3110		}
3111		if (!strncmp(lastParamPtr, "(hd", 3))
3112		lastParamPtr += 3;
3113		dbgPrintf("lastParamPtr: %c\n", *lastParamPtr);
3114
3115		/*
3116		* Second last parameter will decide wether last parameter is
3117		* an IMAGE_DEVICE or INSTALL_DEVICE
3118		*/
3119		while (!isspace(*secLastParamPtr))
3120		secLastParamPtr--;
3121		secLastParamPtr++;
3122
3123		if (secLastParamPtr + 3 > bounds) {
3124		dbgPrintf("secLastParamPtr going over boundary");
3125		fclose(grubConf);
3126		free(line);
3127		return 1;
3128		}
3129		dbgPrintf("secLastParamPtr: %s\n", secLastParamPtr);
3130		if (!strncmp(secLastParamPtr, "(hd", 3)) {
3131		secLastParamPtr += 3;
3132		dbgPrintf("secLastParamPtr: %c\n", *secLastParamPtr);
3133		installDeviceNumber = *secLastParamPtr;
3134		} else {
3135		installDeviceNumber = *lastParamPtr;
3136		}
3137
3138		*devicePtr = malloc(6);
3139		snprintf(*devicePtr, 6, "(hd%c)", installDeviceNumber);
3140		dbgPrintf("installDeviceNumber: %c\n", installDeviceNumber);
3141		fclose(grubConf);
3142		free(line);
3143		return 0;
3144	}	}
	} else {
	bootPrefix = "";
	}
3145
3146	if (!cfi->mbAllowExtraInitRds &&	free(line);
3147	extraInitrdCount > 0) {	fclose(grubConf);
	fprintf(stderr, _("grubby: %s doesn't allow multiple initrds\n"), cfi->defaultConfig);
3148	return 1;	return 1;
3149	}	}
3150
3151		int grubGetBootFromDeviceMap(const char *device, char **bootPtr)
3152		{
3153		FILE *deviceMap;
3154		char *line = NULL;
3155		size_t res = 0, len = 0;
3156		char *devicePtr;
3157		char *bounds = NULL;
3158		const char *path;
3159		const static char default_path[] = "/boot/grub/device.map";
3160
3161		if (!device)
3162		return 1;
3163		if (!bootPtr)
3164		return 1;
3165
3166		if ((path = getenv("GRUBBY_GRUB_DEVICE_MAP")) == NULL)
3167		path = default_path;
3168
3169	if (bootloaderProbe) {	dbgPrintf("opening grub device.map file from: %s\n", path);
3170	int lrc = 0, grc = 0, erc = 0;	deviceMap = fopen(path, "r");
3171	struct grubConfig * lconfig, * gconfig;	if (!deviceMap)
3172		return 1;
3173	if (!access(grubConfigType.defaultConfig, F_OK)) {
3174	gconfig = readConfig(grubConfigType.defaultConfig, &grubConfigType);	while ((res = getline(&line, &len, deviceMap)) != -1) {
3175	if (!gconfig)	if (!strncmp(line, "#", 1))
3176	grc = 1;	continue;
3177	else
3178	grc = checkForGrub(gconfig);	if (line[res - 1] == '\n')
3179	}	line[res - 1] = '\0';
3180		else if (len > res)
3181	if (!access(liloConfigType.defaultConfig, F_OK)) {	line[res] = '\0';
3182	lconfig = readConfig(liloConfigType.defaultConfig, &liloConfigType);	else {
3183	if (!lconfig)	line = realloc(line, res + 1);
3184	lrc = 1;	line[res] = '\0';
3185	else	}
3186	lrc = checkForLilo(lconfig);
3187	}	devicePtr = line;
3188		bounds = line + res;
3189	if (!access(extlinuxConfigType.defaultConfig, F_OK)) {
3190	lconfig = readConfig(extlinuxConfigType.defaultConfig, &extlinuxConfigType);	while ((isspace(*line) && ((devicePtr + 1) <= bounds)))
3191	if (!lconfig)	devicePtr++;
3192	erc = 1;	dbgPrintf("device: %s\n", devicePtr);
3193	else
3194	erc = checkForExtLinux(lconfig);	if (!strncmp(devicePtr, device, strlen(device))) {
3195	}	devicePtr += strlen(device);
3196		while (isspace(*devicePtr)
3197	if (lrc == 1 || grc == 1) return 1;	&& ((devicePtr + 1) <= bounds))
3198		devicePtr++;
3199	if (lrc == 2) printf("lilo\n");
3200	if (grc == 2) printf("grub\n");	*bootPtr = strdup(devicePtr);
3201	if (erc == 2) printf("extlinux\n");	break;
3202		}
3203		}
3204
3205		free(line);
3206		fclose(deviceMap);
3207	return 0;	return 0;
3208	}	}
3209
3210		int suseGrubConfGetBoot(const char *path, char **bootPtr)
3211		{
3212		char *grubDevice;
3213
3214	config = readConfig(grubConfig, cfi);	if (suseGrubConfGetInstallDevice(path, &grubDevice))
3215	if (!config) return 1;	dbgPrintf("error looking for grub installation device\n");
3216		else
3217		dbgPrintf("grubby installation device: %s\n", grubDevice);
3218
3219	if (displayDefault) {	if (grubGetBootFromDeviceMap(grubDevice, bootPtr))
3220	struct singleLine * line;	dbgPrintf("error looking for grub boot device\n");
3221	struct singleEntry * entry;	else
3222	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));
3223
3224		free(grubDevice);
3225	return 0;	return 0;
3226	} else if (kernelInfo)	}
	return displayInfo(config, kernelInfo, bootPrefix);
3227
3228	if (copyDefault) {	int parseSuseGrubConf(int *lbaPtr, char **bootPtr)
3229	template = findTemplate(config, bootPrefix, NULL, 0, flags);	{
3230	if (!template) return 1;	/*
3231	}	* This SuSE grub configuration file at this location is not your
3232		* average grub configuration file, but instead the grub commands
3233		* used to setup grub on that system.
3234		*/
3235		const char *path;
3236		const static char default_path[] = "/etc/grub.conf";
3237
3238	markRemovedImage(config, removeKernelPath, bootPrefix);	if ((path = getenv("GRUBBY_SUSE_GRUB_CONF")) == NULL)
3239	markRemovedImage(config, removeMBKernel, bootPrefix);	path = default_path;
3240	setDefaultImage(config, newKernelPath != NULL, defaultKernel, makeDefault,
3241	bootPrefix, flags);	if (!isSuseGrubConf(path))
3242	setFallbackImage(config, newKernelPath != NULL);	return 1;
3243	if (updateImage(config, updateKernelPath, bootPrefix, newKernelArgs,
3244	removeArgs, newMBKernelArgs, removeMBKernelArgs)) return 1;	if (lbaPtr) {
3245	if (updateKernelPath && newKernelInitrd) {	*lbaPtr = 0;
3246	if (updateInitrd(config, updateKernelPath, bootPrefix,	if (suseGrubConfGetLba(path, lbaPtr))
3247	newKernelInitrd)) return 1;	return 1;
3248	}	}
3249	if (addNewKernel(config, template, bootPrefix, newKernelPath,
3250	newKernelTitle, newKernelArgs, newKernelInitrd,	if (bootPtr) {
3251	extraInitrds, extraInitrdCount,	*bootPtr = NULL;
3252	newMBKernel, newMBKernelArgs)) return 1;	suseGrubConfGetBoot(path, bootPtr);
3253		}
3254
3255	if (numEntries(config) == 0) {	return 0;
3256	fprintf(stderr, _("grubby: doing this would leave no kernel entries. "	}
3257	"Not writing out new config.\n"));
3258	return 1;	int parseSysconfigGrub(int *lbaPtr, char **bootPtr)
3259	}	{
3260		FILE *in;
3261		char buf[1024];
3262		char *chptr;
3263		char *start;
3264		char *param;
3265
3266		in = fopen("/etc/sysconfig/grub", "r");
3267		if (!in)
3268		return 1;
3269
3270		if (lbaPtr)
3271		*lbaPtr = 0;
3272		if (bootPtr)
3273		*bootPtr = NULL;
3274
3275		while (fgets(buf, sizeof(buf), in)) {
3276		start = buf;
3277		while (isspace(*start))
3278		start++;
3279		if (*start == '#')
3280		continue;
3281
3282		chptr = strchr(start, '=');
3283		if (!chptr)
3284		continue;
3285		chptr--;
3286		while (*chptr && isspace(*chptr))
3287		chptr--;
3288		chptr++;
3289		*chptr = '\0';
3290
3291		param = chptr + 1;
3292		while (*param && isspace(*param))
3293		param++;
3294		if (*param == '=') {
3295		param++;
3296		while (*param && isspace(*param))
3297		param++;
3298		}
3299
3300		chptr = param;
3301		while (*chptr && !isspace(*chptr))
3302		chptr++;
3303		*chptr = '\0';
3304
3305		if (!strcmp(start, "forcelba") && !strcmp(param, "1") && lbaPtr)
3306		*lbaPtr = 1;
3307		else if (!strcmp(start, "boot") && bootPtr)
3308		*bootPtr = strdup(param);
3309		}
3310
3311		fclose(in);
3312
3313		return 0;
3314		}
3315
3316		void dumpSysconfigGrub(void)
3317		{
3318		char *boot = NULL;
3319		int lba;
3320
3321		if (isSuseSystem()) {
3322		if (parseSuseGrubConf(&lba, &boot)) {
3323		free(boot);
3324		return;
3325		}
3326		} else {
3327		if (parseSysconfigGrub(&lba, &boot)) {
3328		free(boot);
3329		return;
3330		}
3331		}
3332
3333		if (lba)
3334		printf("lba\n");
3335		if (boot) {
3336		printf("boot=%s\n", boot);
3337		free(boot);
3338		}
3339		}
3340
3341		int displayInfo(struct grubConfig *config, char *kernel, const char *prefix)
3342		{
3343		int i = 0;
3344		struct singleEntry *entry;
3345		struct singleLine *line;
3346
3347		entry = findEntryByPath(config, kernel, prefix, &i);
3348		if (!entry) {
3349		fprintf(stderr, _("grubby: kernel not found\n"));
3350		return 1;
3351		}
3352
3353		/* this is a horrible hack to support /etc/sysconfig/grub; there must
3354		be a better way */
3355		if (config->cfi == &grubConfigType) {
3356		dumpSysconfigGrub();
3357		} else {
3358		line = getLineByType(LT_BOOT, config->theLines);
3359		if (line && line->numElements >= 1) {
3360		printf("boot=%s\n", line->elements[1].item);
3361		}
3362
3363		line = getLineByType(LT_LBA, config->theLines);
3364		if (line)
3365		printf("lba\n");
3366		}
3367
3368		displayEntry(config, entry, prefix, i);
3369
3370		i++;
3371		while ((entry = findEntryByPath(config, kernel, prefix, &i))) {
3372		displayEntry(config, entry, prefix, i);
3373		i++;
3374		}
3375
3376		return 0;
3377		}
3378
3379		struct singleLine *addLineTmpl(struct singleEntry *entry,
3380		struct singleLine *tmplLine,
3381		struct singleLine *prevLine,
3382		const char *val, struct configFileInfo *cfi)
3383		{
3384		struct singleLine *newLine = lineDup(tmplLine);
3385
3386		if (isEfi && cfi == &grub2ConfigType) {
3387		enum lineType_e old = newLine->type;
3388		newLine->type = preferredLineType(newLine->type, cfi);
3389		if (old != newLine->type)
3390		newLine->elements[0].item =
3391		getKeyByType(newLine->type, cfi);
3392		}
3393
3394		if (val) {
3395		/* override the inherited value with our own.
3396		* This is a little weak because it only applies to elements[1]
3397		*/
3398		if (newLine->numElements > 1)
3399		removeElement(newLine, 1);
3400		insertElement(newLine, val, 1, cfi);
3401
3402		/* but try to keep the rootspec from the template... sigh */
3403		if (tmplLine->
3404		type & (LT_HYPER | LT_KERNEL | LT_MBMODULE | LT_INITRD |
3405		LT_KERNEL_EFI | LT_INITRD_EFI | LT_KERNEL_16 |
3406		LT_INITRD_16)) {
3407		const char *prfx = tmplLine->elements[1].item;
3408		size_t rs = getRootSpecifier(prfx);
3409		if (isinitrd(tmplLine->type)) {
3410		for (struct singleLine *l = entry->lines;
3411		rs == 0 && l; l = l->next) {
3412		if (iskernel(l->type)) {
3413		prfx = l->elements[1].item;
3414		rs = getRootSpecifier(prfx);
3415		break;
3416		}
3417		}
3418		}
3419		if (rs > 0) {
3420		free(newLine->elements[1].item);
3421		newLine->elements[1].item = sdupprintf(
3422		"%.*s%s", (int) rs, prfx, val);
3423		}
3424		}
3425		}
3426
3427		dbgPrintf("addLineTmpl(%s)\n", newLine->numElements ?
3428		newLine->elements[0].item : "");
3429
3430		if (!entry->lines) {
3431		/* first one on the list */
3432		entry->lines = newLine;
3433		} else if (prevLine) {
3434		/* add after prevLine */
3435		newLine->next = prevLine->next;
3436		prevLine->next = newLine;
3437		}
3438
3439		return newLine;
3440		}
3441
3442		/* val may be NULL */
3443		struct singleLine *addLine(struct singleEntry *entry,
3444		struct configFileInfo *cfi,
3445		enum lineType_e type, char *defaultIndent,
3446		const char *val)
3447		{
3448		struct singleLine *line, *prev;
3449		struct keywordTypes *kw;
3450		struct singleLine tmpl;
3451
3452		/* NB: This function shouldn't allocate items on the heap, rather on
3453		* the stack since it calls addLineTmpl which will make copies.
3454		*/
3455		if (type == LT_TITLE && cfi->titleBracketed) {
3456		/* we're doing a bracketed title (zipl) */
3457		tmpl.type = type;
3458		tmpl.numElements = 1;
3459		tmpl.elements = alloca(sizeof(*tmpl.elements));
3460		tmpl.elements[0].item = alloca(strlen(val) + 3);
3461		sprintf(tmpl.elements[0].item, "[%s]", val);
3462		tmpl.elements[0].indent = "";
3463		val = NULL;
3464		} else if (type == LT_MENUENTRY) {
3465		char *lineend = "--class gnu-linux --class gnu --class os {";
3466		if (!val) {
3467		fprintf(stderr,
3468		"Line type LT_MENUENTRY requires a value\n");
3469		abort();
3470		}
3471		kw = getKeywordByType(type, cfi);
3472		if (!kw) {
3473		fprintf(stderr,
3474		"Looking up keyword for unknown type %d\n",
3475		type);
3476		abort();
3477		}
3478		tmpl.indent = "";
3479		tmpl.type = type;
3480		tmpl.numElements = 3;
3481		tmpl.elements =
3482		alloca(sizeof(*tmpl.elements) * tmpl.numElements);
3483		tmpl.elements[0].item = kw->key;
3484		tmpl.elements[0].indent = alloca(2);
3485		sprintf(tmpl.elements[0].indent, "%c", kw->nextChar);
3486		tmpl.elements[1].item = (char *)val;
3487		tmpl.elements[1].indent = alloca(2);
3488		sprintf(tmpl.elements[1].indent, "%c", kw->nextChar);
3489		tmpl.elements[2].item = alloca(strlen(lineend) + 1);
3490		strcpy(tmpl.elements[2].item, lineend);
3491		tmpl.elements[2].indent = "";
3492		} else {
3493		kw = getKeywordByType(type, cfi);
3494		if (!kw) {
3495		fprintf(stderr,
3496		"Looking up keyword for unknown type %d\n",
3497		type);
3498		abort();
3499		}
3500		tmpl.type = type;
3501		tmpl.numElements = val ? 2 : 1;
3502		tmpl.elements =
3503		alloca(sizeof(*tmpl.elements) * tmpl.numElements);
3504		tmpl.elements[0].item = kw->key;
3505		tmpl.elements[0].indent = alloca(2);
3506		sprintf(tmpl.elements[0].indent, "%c", kw->nextChar);
3507		if (val) {
3508		tmpl.elements[1].item = (char *)val;
3509		tmpl.elements[1].indent = "";
3510		}
3511		}
3512
3513		/* The last non-empty line gives us the indention to us and the line
3514		* to insert after. Note that comments are considered empty lines,
3515		* which may not be ideal? If there are no lines or we are looking at
3516		* the first line, we use defaultIndent (the first line is normally
3517		* indented differently from the rest) */
3518		for (line = entry->lines, prev = NULL; line; line = line->next) {
3519		if (line->numElements)
3520		prev = line;
3521		/* fall back on the last line if prev isn't otherwise set */
3522		if (!line->next && !prev)
3523		prev = line;
3524		}
3525
3526		struct singleLine *menuEntry;
3527		menuEntry = getLineByType(LT_MENUENTRY, entry->lines);
3528		if (tmpl.type == LT_ENTRY_END) {
3529		if (menuEntry)
3530		tmpl.indent = menuEntry->indent;
3531		else
3532		tmpl.indent = defaultIndent ? : "";
3533		} else if (tmpl.type != LT_MENUENTRY) {
3534		if (menuEntry)
3535		tmpl.indent = "\t";
3536		else if (prev == entry->lines)
3537		tmpl.indent = defaultIndent ? : "";
3538		else
3539		tmpl.indent = prev->indent;
3540		}
3541
3542		return addLineTmpl(entry, &tmpl, prev, val, cfi);
3543		}
3544
3545		void removeLine(struct singleEntry *entry, struct singleLine *line)
3546		{
3547		struct singleLine *prev;
3548		int i;
3549
3550		for (i = 0; i < line->numElements; i++) {
3551		free(line->elements[i].item);
3552		free(line->elements[i].indent);
3553		}
3554		free(line->elements);
3555		free(line->indent);
3556
3557		if (line == entry->lines) {
3558		entry->lines = line->next;
3559		} else {
3560		prev = entry->lines;
3561		while (prev->next != line)
3562		prev = prev->next;
3563		prev->next = line->next;
3564		}
3565
3566		free(line);
3567		}
3568
3569		static void requote(struct singleLine *tmplLine, struct configFileInfo *cfi)
3570		{
3571		struct singleLine newLine = {
3572		.indent = tmplLine->indent,
3573		.type = tmplLine->type,
3574		.next = tmplLine->next,
3575		};
3576		int firstQuotedItem = -1;
3577		int quoteLen = 0;
3578		int j;
3579		int element = 0;
3580		char *c;
3581
3582		c = malloc(strlen(tmplLine->elements[0].item) + 1);
3583		strcpy(c, tmplLine->elements[0].item);
3584		insertElement(&newLine, c, element++, cfi);
3585		free(c);
3586		c = NULL;
3587
3588		for (j = 1; j < tmplLine->numElements; j++) {
3589		if (firstQuotedItem == -1) {
3590		quoteLen += strlen(tmplLine->elements[j].item);
3591
3592		if (isquote(tmplLine->elements[j].item[0])) {
3593		firstQuotedItem = j;
3594		quoteLen +=
3595		strlen(tmplLine->elements[j].indent);
3596		} else {
3597		c = malloc(quoteLen + 1);
3598		strcpy(c, tmplLine->elements[j].item);
3599		insertElement(&newLine, c, element++, cfi);
3600		free(c);
3601		quoteLen = 0;
3602		}
3603		} else {
3604		int itemlen = strlen(tmplLine->elements[j].item);
3605		quoteLen += itemlen;
3606		quoteLen += strlen(tmplLine->elements[j].indent);
3607
3608		if (isquote(tmplLine->elements[j].item[itemlen - 1])) {
3609		c = malloc(quoteLen + 1);
3610		c[0] = '\0';
3611		for (int i = firstQuotedItem; i < j + 1; i++) {
3612		strcat(c, tmplLine->elements[i].item);
3613		strcat(c, tmplLine->elements[i].indent);
3614		}
3615		insertElement(&newLine, c, element++, cfi);
3616		free(c);
3617
3618		firstQuotedItem = -1;
3619		quoteLen = 0;
3620		}
3621		}
3622		}
3623		while (tmplLine->numElements)
3624		removeElement(tmplLine, 0);
3625		if (tmplLine->elements)
3626		free(tmplLine->elements);
3627
3628		tmplLine->numElements = newLine.numElements;
3629		tmplLine->elements = newLine.elements;
3630		}
3631
3632		static void insertElement(struct singleLine *line,
3633		const char *item, int insertHere,
3634		struct configFileInfo *cfi)
3635		{
3636		struct keywordTypes *kw;
3637		char indent[2] = "";
3638
3639		/* sanity check */
3640		if (insertHere > line->numElements) {
3641		dbgPrintf
3642		("insertElement() adjusting insertHere from %d to %d\n",
3643		insertHere, line->numElements);
3644		insertHere = line->numElements;
3645		}
3646
3647		line->elements = realloc(line->elements, (line->numElements + 1) *
3648		sizeof(*line->elements));
3649		memmove(&line->elements[insertHere + 1],
3650		&line->elements[insertHere],
3651		(line->numElements - insertHere) * sizeof(*line->elements));
3652		line->elements[insertHere].item = strdup(item);
3653
3654		kw = getKeywordByType(line->type, cfi);
3655
3656		if (line->numElements == 0) {
3657		indent[0] = '\0';
3658		} else if (insertHere == 0) {
3659		indent[0] = kw->nextChar;
3660		} else if (kw->separatorChar != '\0') {
3661		indent[0] = kw->separatorChar;
3662		} else {
3663		indent[0] = ' ';
3664		}
3665
3666		if (insertHere > 0 && line->elements[insertHere - 1].indent[0] == '\0') {
3667		/* move the end-of-line forward */
3668		line->elements[insertHere].indent =
3669		line->elements[insertHere - 1].indent;
3670		line->elements[insertHere - 1].indent = strdup(indent);
3671		} else {
3672		line->elements[insertHere].indent = strdup(indent);
3673		}
3674
3675		line->numElements++;
3676
3677		dbgPrintf("insertElement(%s, '%s%s', %d)\n",
3678		line->elements[0].item,
3679		line->elements[insertHere].item,
3680		line->elements[insertHere].indent, insertHere);
3681		}
3682
3683		static void removeElement(struct singleLine *line, int removeHere)
3684		{
3685		int i;
3686
3687		/* sanity check */
3688		if (removeHere >= line->numElements)
3689		return;
3690
3691		dbgPrintf("removeElement(%s, %d:%s)\n", line->elements[0].item,
3692		removeHere, line->elements[removeHere].item);
3693
3694		free(line->elements[removeHere].item);
3695
3696		if (removeHere > 1) {
3697		/* previous argument gets this argument's post-indentation */
3698		free(line->elements[removeHere - 1].indent);
3699		line->elements[removeHere - 1].indent =
3700		line->elements[removeHere].indent;
3701		} else {
3702		free(line->elements[removeHere].indent);
3703		}
3704
3705		/* now collapse the array, but don't bother to realloc smaller */
3706		for (i = removeHere; i < line->numElements - 1; i++)
3707		line->elements[i] = line->elements[i + 1];
3708
3709		line->numElements--;
3710		}
3711
3712		static int argNameMatch(const char *one, const char *two)
3713		{
3714		char *first, *second;
3715		char *chptra, *chptrb;
3716		int rc;
3717
3718		first = strcpy(alloca(strlen(one) + 1), one);
3719		second = strcpy(alloca(strlen(two) + 1), two);
3720
3721		chptra = strchr(first, '=');
3722		if (chptra)
3723		*chptra = '\0';
3724
3725		chptrb = strchr(second, '=');
3726		if (chptrb)
3727		*chptrb = '\0';
3728
3729		rc = strcmp(first, second);
3730
3731		if (chptra)
3732		*chptra = '=';
3733		if (chptrb)
3734		*chptrb = '=';
3735
3736		return rc;
3737		}
3738
3739		static int argHasValue(const char *arg)
3740		{
3741		char *chptr;
3742
3743		chptr = strchr(arg, '=');
3744		if (chptr)
3745		return 1;
3746		return 0;
3747		}
3748
3749		static int argValueMatch(const char *one, const char *two)
3750		{
3751		char *first, *second;
3752		char *chptra, *chptrb;
3753
3754		first = strcpy(alloca(strlen(one) + 1), one);
3755		second = strcpy(alloca(strlen(two) + 1), two);
3756
3757		chptra = strchr(first, '=');
3758		if (chptra)
3759		chptra += 1;
3760
3761		chptrb = strchr(second, '=');
3762		if (chptrb)
3763		chptrb += 1;
3764
3765		if (!chptra && !chptrb)
3766		return 0;
3767		else if (!chptra && chptrb)
3768		return *chptrb - 0;
3769		else if (!chptrb && chptra)
3770		return 0 - *chptra;
3771		else
3772		return strcmp(chptra, chptrb);
3773		}
3774
3775		int updateActualImage(struct grubConfig *cfg, const char *image,
3776		const char *prefix, const char *addArgs,
3777		const char *removeArgs, int multibootArgs)
3778		{
3779		struct singleEntry *entry;
3780		struct singleLine *line, *rootLine;
3781		int index = 0;
3782		int i, k;
3783		const char **newArgs, **oldArgs;
3784		const char **arg;
3785		int useKernelArgs, useRoot;
3786		int firstElement;
3787		int *usedElements;
3788		int doreplace;
3789
3790		if (!image)
3791		return 0;
3792
3793		if (!addArgs) {
3794		newArgs = malloc(sizeof(*newArgs));
3795		*newArgs = NULL;
3796		} else {
3797		if (poptParseArgvString(addArgs, NULL, &newArgs)) {
3798		fprintf(stderr,
3799		_("grubby: error separating arguments '%s'\n"),
3800		addArgs);
3801		return 1;
3802		}
3803		}
3804
3805		if (!removeArgs) {
3806		oldArgs = malloc(sizeof(*oldArgs));
3807		*oldArgs = NULL;
3808		} else {
3809		if (poptParseArgvString(removeArgs, NULL, &oldArgs)) {
3810		fprintf(stderr,
3811		_("grubby: error separating arguments '%s'\n"),
3812		removeArgs);
3813		free(newArgs);
3814		return 1;
3815		}
3816		}
3817
3818		useKernelArgs = (getKeywordByType(LT_KERNELARGS, cfg->cfi)
3819		&& (!multibootArgs || cfg->cfi->mbConcatArgs));
3820
3821		useRoot = (getKeywordByType(LT_ROOT, cfg->cfi)
3822		&& !multibootArgs);
3823
3824		for (; (entry = findEntryByPath(cfg, image, prefix, &index)); index++) {
3825
3826		if (multibootArgs && !entry->multiboot)
3827		continue;
3828
3829		/* Determine where to put the args.  If this config supports
3830		* LT_KERNELARGS, use that.  Otherwise use
3831		* LT_HYPER/LT_KERNEL/LT_MBMODULE lines.
3832		*/
3833		if (useKernelArgs) {
3834		line = getLineByType(LT_KERNELARGS, entry->lines);
3835		if (!line) {
3836		/* no LT_KERNELARGS, need to add it */
3837		line = addLine(entry, cfg->cfi, LT_KERNELARGS,
3838		cfg->secondaryIndent, NULL);
3839		}
3840		firstElement = 1;
3841
3842		} else if (multibootArgs) {
3843		line = getLineByType(LT_HYPER, entry->lines);
3844		if (!line) {
3845		/* a multiboot entry without LT_HYPER? */
3846		continue;
3847		}
3848		firstElement = 2;
3849
3850		} else {
3851		line =
3852		getLineByType(LT_KERNEL | LT_MBMODULE |
3853		LT_KERNEL_EFI | LT_KERNEL_16,
3854		entry->lines);
3855		if (!line) {
3856		/* no LT_KERNEL or LT_MBMODULE in this entry? */
3857		continue;
3858		}
3859		firstElement = 2;
3860		}
3861
3862		/* handle the elilo case which does:
3863		*   append="hypervisor args -- kernel args"
3864		*/
3865		if (entry->multiboot && cfg->cfi->mbConcatArgs) {
3866		/* this is a multiboot entry, make sure there's
3867		* -- on the args line
3868		*/
3869		for (i = firstElement; i < line->numElements; i++) {
3870		if (!strcmp(line->elements[i].item, "--"))
3871		break;
3872		}
3873		if (i == line->numElements) {
3874		/* assume all existing args are kernel args,
3875		* prepend -- to make it official
3876		*/
3877		insertElement(line, "--", firstElement,
3878		cfg->cfi);
3879		i = firstElement;
3880		}
3881		if (!multibootArgs) {
3882		/* kernel args start after the -- */
3883		firstElement = i + 1;
3884		}
3885		} else if (cfg->cfi->mbConcatArgs) {
3886		/* this is a non-multiboot entry, remove hyper args */
3887		for (i = firstElement; i < line->numElements; i++) {
3888		if (!strcmp(line->elements[i].item, "--"))
3889		break;
3890		}
3891		if (i < line->numElements) {
3892		/* remove args up to -- */
3893		while (strcmp
3894		(line->elements[firstElement].item,
3895		"--"))
3896		removeElement(line, firstElement);
3897		/* remove -- */
3898		removeElement(line, firstElement);
3899		}
3900		}
3901
3902		usedElements = calloc(line->numElements, sizeof(*usedElements));
3903
3904		for (k = 0, arg = newArgs; *arg; arg++, k++) {
3905
3906		doreplace = 1;
3907		for (i = firstElement; i < line->numElements; i++) {
3908		if (multibootArgs && cfg->cfi->mbConcatArgs &&
3909		!strcmp(line->elements[i].item, "--")) {
3910		/* reached the end of hyper args, insert here */
3911		doreplace = 0;
3912		break;
3913		}
3914		if (usedElements[i])
3915		continue;
3916		if (!argNameMatch(line->elements[i].item, *arg)) {
3917		usedElements[i] = 1;
3918		break;
3919		}
3920		}
3921
3922		if (i < line->numElements && doreplace) {
3923		/* direct replacement */
3924		free(line->elements[i].item);
3925		line->elements[i].item = strdup(*arg);
3926
3927		} else if (useRoot && !strncmp(*arg, "root=/dev/", 10)) {
3928		/* root= replacement */
3929		rootLine = getLineByType(LT_ROOT, entry->lines);
3930		if (rootLine) {
3931		free(rootLine->elements[1].item);
3932		rootLine->elements[1].item =
3933		strdup(*arg + 5);
3934		} else {
3935		rootLine =
3936		addLine(entry, cfg->cfi, LT_ROOT,
3937		cfg->secondaryIndent,
3938		*arg + 5);
3939		}
3940		}
3941
3942		else {
3943		/* insert/append */
3944		insertElement(line, *arg, i, cfg->cfi);
3945		usedElements =
3946		realloc(usedElements,
3947		line->numElements *
3948		sizeof(*usedElements));
3949		memmove(&usedElements[i + 1], &usedElements[i],
3950		line->numElements - i - 1);
3951		usedElements[i] = 1;
3952
3953		/* if we updated a root= here even though
3954		* there is a LT_ROOT available we need to
3955		* remove the LT_ROOT entry (this will happen
3956		* if we switch from a device to a label) */
3957		if (useRoot && !strncmp(*arg, "root=", 5)) {
3958		rootLine =
3959		getLineByType(LT_ROOT,
3960		entry->lines);
3961		if (rootLine)
3962		removeLine(entry, rootLine);
3963		}
3964		}
3965		}
3966
3967		free(usedElements);
3968
3969		for (arg = oldArgs; *arg; arg++) {
3970		for (i = firstElement; i < line->numElements; i++) {
3971		if (multibootArgs && cfg->cfi->mbConcatArgs &&
3972		!strcmp(line->elements[i].item, "--"))
3973		/* reached the end of hyper args, stop here */
3974		break;
3975		if (!argNameMatch(line->elements[i].item, *arg)) {
3976		if (!argHasValue(*arg) ||
3977		!argValueMatch(line->elements[i].item, *arg)) {
3978		removeElement(line, i);
3979		break;
3980		}
3981		}
3982		}
3983		/* handle removing LT_ROOT line too */
3984		if (useRoot && !strncmp(*arg, "root=", 5)) {
3985		rootLine = getLineByType(LT_ROOT, entry->lines);
3986		if (rootLine)
3987		removeLine(entry, rootLine);
3988		}
3989		}
3990
3991		if (line->numElements == 1) {
3992		/* don't need the line at all (note it has to be a
3993		LT_KERNELARGS for this to happen */
3994		removeLine(entry, line);
3995		}
3996		}
3997
3998		free(newArgs);
3999		free(oldArgs);
4000
4001		return 0;
4002		}
4003
4004		int updateImage(struct grubConfig *cfg, const char *image,
4005		const char *prefix, const char *addArgs,
4006		const char *removeArgs,
4007		const char *addMBArgs, const char *removeMBArgs)
4008		{
4009		int rc = 0;
4010
4011		if (!image)
4012		return rc;
4013
4014		/* update the main args first... */
4015		if (addArgs || removeArgs)
4016		rc = updateActualImage(cfg, image, prefix, addArgs, removeArgs,
4017		0);
4018		if (rc)
4019		return rc;
4020
4021		/* and now any multiboot args */
4022		if (addMBArgs || removeMBArgs)
4023		rc = updateActualImage(cfg, image, prefix, addMBArgs,
4024		removeMBArgs, 1);
4025		return rc;
4026		}
4027
4028		int addMBInitrd(struct grubConfig *cfg, const char *newMBKernel,
4029		const char *image, const char *prefix, const char *initrd,
4030		const char *title)
4031		{
4032		struct singleEntry *entry;
4033		struct singleLine *line, *kernelLine, *endLine = NULL;
4034		int index = 0;
4035
4036		if (!image)
4037		return 0;
4038
4039		for (; (entry = findEntryByPath(cfg, image, prefix, &index)); index++) {
4040		kernelLine = getLineByType(LT_MBMODULE, entry->lines);
4041		if (!kernelLine)
4042		continue;
4043
4044		/* if title is supplied, the entry's title must match it. */
4045		if (title) {
4046		char *linetitle;
4047
4048		line =
4049		getLineByType(LT_TITLE | LT_MENUENTRY,
4050		entry->lines);
4051		if (!line)
4052		continue;
4053
4054		linetitle = extractTitle(cfg, line);
4055		if (!linetitle)
4056		continue;
4057		if (strcmp(title, linetitle)) {
4058		free(linetitle);
4059		continue;
4060		}
4061		free(linetitle);
4062		}
4063
4064		if (prefix) {
4065		int prefixLen = strlen(prefix);
4066		if (!strncmp(initrd, prefix, prefixLen))
4067		initrd += prefixLen;
4068		}
4069		endLine = getLineByType(LT_ENTRY_END, entry->lines);
4070		if (endLine)
4071		removeLine(entry, endLine);
4072		line =
4073		addLine(entry, cfg->cfi,
4074		preferredLineType(LT_MBMODULE, cfg->cfi),
4075		kernelLine->indent, initrd);
4076		if (!line)
4077		return 1;
4078		if (endLine) {
4079		line = addLine(entry, cfg->cfi, LT_ENTRY_END, "", NULL);
4080		if (!line)
4081		return 1;
4082		}
4083
4084		break;
4085		}
4086
4087		return 0;
4088		}
4089
4090		int updateInitrd(struct grubConfig *cfg, const char *image,
4091		const char *prefix, const char *initrd, const char *title)
4092		{
4093		struct singleEntry *entry;
4094		struct singleLine *line, *kernelLine, *endLine = NULL;
4095		int index = 0;
4096
4097		if (!image)
4098		return 0;
4099
4100		for (; (entry = findEntryByPath(cfg, image, prefix, &index)); index++) {
4101		kernelLine =
4102		getLineByType(LT_KERNEL | LT_KERNEL_EFI | LT_KERNEL_16,
4103		entry->lines);
4104		if (!kernelLine)
4105		continue;
4106
4107		/* if title is supplied, the entry's title must match it. */
4108		if (title) {
4109		char *linetitle;
4110
4111		line =
4112		getLineByType(LT_TITLE | LT_MENUENTRY,
4113		entry->lines);
4114		if (!line)
4115		continue;
4116
4117		linetitle = extractTitle(cfg, line);
4118		if (!linetitle)
4119		continue;
4120		if (strcmp(title, linetitle)) {
4121		free(linetitle);
4122		continue;
4123		}
4124		free(linetitle);
4125		}
4126
4127		line =
4128		getLineByType(LT_INITRD | LT_INITRD_EFI | LT_INITRD_16,
4129		entry->lines);
4130		if (line)
4131		removeLine(entry, line);
4132		if (prefix) {
4133		int prefixLen = strlen(prefix);
4134		if (!strncmp(initrd, prefix, prefixLen))
4135		initrd += prefixLen;
4136		}
4137		endLine = getLineByType(LT_ENTRY_END, entry->lines);
4138		if (endLine)
4139		removeLine(entry, endLine);
4140		enum lineType_e lt;
4141		switch (kernelLine->type) {
4142		case LT_KERNEL:
4143		lt = LT_INITRD;
4144		break;
4145		case LT_KERNEL_EFI:
4146		lt = LT_INITRD_EFI;
4147		break;
4148		case LT_KERNEL_16:
4149		lt = LT_INITRD_16;
4150		break;
4151		default:
4152		lt = preferredLineType(LT_INITRD, cfg->cfi);
4153		}
4154		line = addLine(entry, cfg->cfi, lt, kernelLine->indent, initrd);
4155		if (!line)
4156		return 1;
4157		if (endLine) {
4158		line = addLine(entry, cfg->cfi, LT_ENTRY_END, "", NULL);
4159		if (!line)
4160		return 1;
4161		}
4162
4163		break;
4164		}
4165
4166		return 0;
4167		}
4168
4169		int checkDeviceBootloader(const char *device, const unsigned char *boot)
4170		{
4171		int fd;
4172		unsigned char bootSect[512];
4173		int offset;
4174
4175		fd = open(device, O_RDONLY);
4176		if (fd < 0) {
4177		fprintf(stderr, _("grubby: unable to open %s: %s\n"),
4178		device, strerror(errno));
4179		return 1;
4180		}
4181
4182		if (read(fd, bootSect, 512) != 512) {
4183		fprintf(stderr, _("grubby: unable to read %s: %s\n"),
4184		device, strerror(errno));
4185		return 1;
4186		}
4187		close(fd);
4188
4189		/* first three bytes should match, a jmp short should be in there */
4190		if (memcmp(boot, bootSect, 3))
4191		return 0;
4192
4193		if (boot[1] == JMP_SHORT_OPCODE) {
4194		offset = boot[2] + 2;
4195		} else if (boot[1] == 0xe8 || boot[1] == 0xe9) {
4196		offset = (boot[3] << 8) + boot[2] + 2;
4197		} else if (boot[0] == JMP_SHORT_OPCODE) {
4198		offset = boot[1] + 2;
4199		/*
4200		* it looks like grub, when copying stage1 into the mbr,
4201		* patches stage1 right after the JMP location, replacing
4202		* other instructions such as JMPs for NOOPs. So, relax the
4203		* check a little bit by skipping those different bytes.
4204		*/
4205		if ((bootSect[offset + 1] == NOOP_OPCODE)
4206		&& (bootSect[offset + 2] == NOOP_OPCODE)) {
4207		offset = offset + 3;
4208		}
4209		} else if (boot[0] == 0xe8 || boot[0] == 0xe9) {
4210		offset = (boot[2] << 8) + boot[1] + 2;
4211		} else {
4212		return 0;
4213		}
4214
4215		if (memcmp(boot + offset, bootSect + offset, CODE_SEG_SIZE))
4216		return 0;
4217
4218		return 2;
4219		}
4220
4221		int checkLiloOnRaid(char *mdDev, const unsigned char *boot)
4222		{
4223		int fd;
4224		char buf[65536];
4225		char *end;
4226		char *chptr;
4227		char *chptr2;
4228		int rc;
4229
4230		/* it's on raid; we need to parse /proc/mdstat and check all of the
4231		*raw* devices listed in there */
4232
4233		if (!strncmp(mdDev, "/dev/", 5))
4234		mdDev += 5;
4235
4236		if ((fd = open("/proc/mdstat", O_RDONLY)) < 0) {
4237		fprintf(stderr, _("grubby: failed to open /proc/mdstat: %s\n"),
4238		strerror(errno));
4239		return 2;
4240		}
4241
4242		rc = read(fd, buf, sizeof(buf) - 1);
4243		if (rc < 0 || rc == (sizeof(buf) - 1)) {
4244		fprintf(stderr, _("grubby: failed to read /proc/mdstat: %s\n"),
4245		strerror(errno));
4246		close(fd);
4247		return 2;
4248		}
4249		close(fd);
4250		buf[rc] = '\0';
4251
4252		chptr = buf;
4253		while (*chptr) {
4254		end = strchr(chptr, '\n');
4255		if (!end)
4256		break;
4257		*end = '\0';
4258
4259		if (!strncmp(chptr, mdDev, strlen(mdDev)) &&
4260		chptr[strlen(mdDev)] == ' ') {
4261
4262		/* found the device */
4263		while (*chptr && *chptr != ':')
4264		chptr++;
4265		chptr++;
4266		while (*chptr && isspace(*chptr))
4267		chptr++;
4268
4269		/* skip the "active" bit */
4270		while (*chptr && !isspace(*chptr))
4271		chptr++;
4272		while (*chptr && isspace(*chptr))
4273		chptr++;
4274
4275		/* skip the raid level */
4276		while (*chptr && !isspace(*chptr))
4277		chptr++;
4278		while (*chptr && isspace(*chptr))
4279		chptr++;
4280
4281		/* everything else is partition stuff */
4282		while (*chptr) {
4283		chptr2 = chptr;
4284		while (*chptr2 && *chptr2 != '[')
4285		chptr2++;
4286		if (!*chptr2)
4287		break;
4288
4289		/* yank off the numbers at the end */
4290		chptr2--;
4291		while (isdigit(*chptr2) && chptr2 > chptr)
4292		chptr2--;
4293		chptr2++;
4294		*chptr2 = '\0';
4295
4296		/* Better, now we need the /dev/ back. We're
4297		* done with everything before this point, so
4298		* we can just put the /dev/ part there.
4299		* There will always be room. */
4300		memcpy(chptr - 5, "/dev/", 5);
4301		rc = checkDeviceBootloader(chptr - 5, boot);
4302		if (rc != 2) {
4303		return rc;
4304		}
4305
4306		chptr = chptr2 + 1;
4307		/* skip the [11] bit */
4308		while (*chptr && !isspace(*chptr))
4309		chptr++;
4310		/* and move to the next one */
4311		while (*chptr && isspace(*chptr))
4312		chptr++;
4313		}
4314
4315		/*  we're good to go */
4316		return 2;
4317		}
4318
4319		chptr = end + 1;
4320		}
4321
4322		fprintf(stderr,
4323		_("grubby: raid device /dev/%s not found in /proc/mdstat\n"),
4324		mdDev);
4325		return 0;
4326		}
4327
4328		int checkForLilo(struct grubConfig *config)
4329		{
4330		int fd;
4331		unsigned char boot[512];
4332		struct singleLine *line;
4333
4334		for (line = config->theLines; line; line = line->next)
4335		if (line->type == LT_BOOT)
4336		break;
4337
4338		if (!line) {
4339		fprintf(stderr,
4340		_
4341		("grubby: no boot line found in lilo configuration\n"));
4342		return 1;
4343		}
4344
4345		if (line->numElements != 2)
4346		return 1;
4347
4348		fd = open("/boot/boot.b", O_RDONLY);
4349		if (fd < 0) {
4350		fprintf(stderr, _("grubby: unable to open %s: %s\n"),
4351		"/boot/boot.b", strerror(errno));
4352		return 1;
4353		}
4354
4355		if (read(fd, boot, 512) != 512) {
4356		fprintf(stderr, _("grubby: unable to read %s: %s\n"),
4357		"/boot/boot.b", strerror(errno));
4358		return 1;
4359		}
4360		close(fd);
4361
4362		if (!strncmp("/dev/md", line->elements[1].item, 7))
4363		return checkLiloOnRaid(line->elements[1].item, boot);
4364
4365		return checkDeviceBootloader(line->elements[1].item, boot);
4366		}
4367
4368		int checkForGrub2(struct grubConfig *config)
4369		{
4370		if (!access("/etc/grub.d/", R_OK))
4371		return 2;
4372
4373		return 1;
4374		}
4375
4376		int checkForGrub(struct grubConfig *config)
4377		{
4378		int fd;
4379		unsigned char bootSect[512];
4380		char *boot;
4381		int onSuse = isSuseSystem();
4382
4383		if (onSuse) {
4384		if (parseSuseGrubConf(NULL, &boot))
4385		return 0;
4386		} else {
4387		if (parseSysconfigGrub(NULL, &boot))
4388		return 0;
4389		}
4390
4391		/* assume grub is not installed -- not an error condition */
4392		if (!boot)
4393		return 0;
4394
4395		fd = open("/boot/grub/stage1", O_RDONLY);
4396		if (fd < 0)
4397		/* this doesn't exist if grub hasn't been installed */
4398		return 0;
4399
4400		if (read(fd, bootSect, 512) != 512) {
4401		fprintf(stderr, _("grubby: unable to read %s: %s\n"),
4402		"/boot/grub/stage1", strerror(errno));
4403		close(fd);
4404		return 1;
4405		}
4406		close(fd);
4407
4408		/* The more elaborate checks do not work on SuSE. The checks done
4409		* seem to be reasonble (at least for now), so just return success
4410		*/
4411		if (onSuse)
4412		return 2;
4413
4414		return checkDeviceBootloader(boot, bootSect);
4415		}
4416
4417		int checkForExtLinux(struct grubConfig *config)
4418		{
4419		int fd;
4420		unsigned char bootSect[512];
4421		char *boot;
4422		char executable[] = "/boot/extlinux/extlinux";
4423
4424		printf("entered: checkForExtLinux()\n");
4425
4426		if (parseSysconfigGrub(NULL, &boot))
4427		return 0;
4428
4429		/* assume grub is not installed -- not an error condition */
4430		if (!boot)
4431		return 0;
4432
4433		fd = open(executable, O_RDONLY);
4434		if (fd < 0)
4435		/* this doesn't exist if grub hasn't been installed */
4436		return 0;
4437
4438		if (read(fd, bootSect, 512) != 512) {
4439		fprintf(stderr, _("grubby: unable to read %s: %s\n"),
4440		executable, strerror(errno));
4441		return 1;
4442		}
4443		close(fd);
4444
4445		return checkDeviceBootloader(boot, bootSect);
4446		}
4447
4448		int checkForYaboot(struct grubConfig *config)
4449		{
4450		/*
4451		* This is a simplistic check that we consider good enough for own puporses
4452		*
4453		* If we were to properly check if yaboot is *installed* we'd need to:
4454		* 1) get the system boot device (LT_BOOT)
4455		* 2) considering it's a raw filesystem, check if the yaboot binary matches
4456		*    the content on the boot device
4457		* 3) if not, copy the binary to a temporary file and run "addnote" on it
4458		* 4) check again if binary and boot device contents match
4459		*/
4460		if (!access("/etc/yaboot.conf", R_OK))
4461		return 2;
4462
4463		return 1;
4464		}
4465
4466		int checkForElilo(struct grubConfig *config)
4467		{
4468		if (!access("/etc/elilo.conf", R_OK))
4469		return 2;
4470
4471		return 1;
4472		}
4473
4474		static size_t getRootSpecifier(const char *str)
4475		{
4476		size_t rs = 0;
4477
4478		if (*str == '(') {
4479		for (; str[rs] != ')' && !isspace(str[rs]); rs++) {
4480		if (!str[rs])
4481		return rs;
4482		}
4483		rs++;
4484		}
4485
4486		return rs + subvolPrefix(str + rs);
4487		}
4488
4489		static char *getInitrdVal(struct grubConfig *config,
4490		const char *prefix, struct singleLine *tmplLine,
4491		const char *newKernelInitrd,
4492		const char **extraInitrds, int extraInitrdCount)
4493		{
4494		char *initrdVal, *end;
4495		int i;
4496		size_t totalSize;
4497		size_t prefixLen;
4498		char separatorChar;
4499
4500		prefixLen = strlen(prefix);
4501		totalSize = strlen(newKernelInitrd) - prefixLen + 1 /* \0 */ ;
4502
4503		for (i = 0; i < extraInitrdCount; i++) {
4504		totalSize += sizeof(separatorChar);
4505		totalSize += strlen(extraInitrds[i]) - prefixLen;
4506		}
4507
4508		initrdVal = end = malloc(totalSize);
4509
4510		end = stpcpy(end, newKernelInitrd + prefixLen);
4511
4512		separatorChar = getKeywordByType(LT_INITRD, config->cfi)->separatorChar;
4513		for (i = 0; i < extraInitrdCount; i++) {
4514		const char *extraInitrd;
4515		int j;
4516
4517		extraInitrd = extraInitrds[i] + prefixLen;
4518		/* Don't add entries that are already there */
4519		if (tmplLine != NULL) {
4520		for (j = 2; j < tmplLine->numElements; j++)
4521		if (strcmp
4522		(extraInitrd,
4523		tmplLine->elements[j].item) == 0)
4524		break;
4525
4526		if (j != tmplLine->numElements)
4527		continue;
4528		}
4529
4530		*end++ = separatorChar;
4531		end = stpcpy(end, extraInitrd);
4532		}
4533
4534		return initrdVal;
4535		}
4536
4537		int addNewKernel(struct grubConfig *config, struct singleEntry *template,
4538		const char *prefix,
4539		const char *newKernelPath, const char *newKernelTitle,
4540		const char *newKernelArgs, const char *newKernelInitrd,
4541		const char **extraInitrds, int extraInitrdCount,
4542		const char *newMBKernel, const char *newMBKernelArgs,
4543		const char *newDevTreePath, int newIndex)
4544		{
4545		struct singleEntry *new, *entry, *prev = NULL;
4546		struct singleLine *newLine = NULL, *tmplLine = NULL, *masterLine = NULL;
4547		int needs;
4548		char *indexs;
4549		char *chptr;
4550		int rc;
4551
4552		if (!newKernelPath)
4553		return 0;
4554
4555		rc = asprintf(&indexs, "%d", newIndex);
4556		if (rc < 0)
4557		return 1;
4558
4559		/* if the newKernelTitle is too long silently munge it into something
4560		* we can live with. truncating is first check, then we'll just mess with
4561		* it until it looks better */
4562		if (config->cfi->maxTitleLength &&
4563		(strlen(newKernelTitle) > config->cfi->maxTitleLength)) {
4564		char *buf = alloca(config->cfi->maxTitleLength + 7);
4565		char *numBuf = alloca(config->cfi->maxTitleLength + 1);
4566		int i = 1;
4567
4568		sprintf(buf, "TITLE=%.*s", config->cfi->maxTitleLength,
4569		newKernelTitle);
4570		while (findEntryByPath(config, buf, NULL, NULL)) {
4571		sprintf(numBuf, "%d", i++);
4572		strcpy(buf + strlen(buf) - strlen(numBuf), numBuf);
4573		}
4574
4575		newKernelTitle = buf + 6;
4576		}
4577
4578		new = malloc(sizeof(*new));
4579		new->skip = 0;
4580		new->multiboot = 0;
4581		new->lines = NULL;
4582		entry = config->entries;
4583		for (unsigned int i = 0; i < newIndex; i++) {
4584		if (!entry)
4585		break;
4586		prev = entry;
4587		entry = entry->next;
4588		}
4589		new->next = entry;
4590
4591		if (prev)
4592		prev->next = new;
4593		else
4594		config->entries = new;
4595
4596		/* copy/update from the template */
4597		needs = NEED_KERNEL | NEED_TITLE;
4598		if (newKernelInitrd)
4599		needs |= NEED_INITRD;
4600		if (newMBKernel) {
4601		needs |= NEED_MB;
4602		new->multiboot = 1;
4603		}
4604		if (newDevTreePath && getKeywordByType(LT_DEVTREE, config->cfi))
4605		needs |= NEED_DEVTREE;
4606
4607		if (template) {
4608		for (masterLine = template->lines;
4609		masterLine && (tmplLine = lineDup(masterLine));
4610		lineFree(tmplLine), masterLine = masterLine->next) {
4611		dbgPrintf("addNewKernel processing %d\n",
4612		tmplLine->type);
4613
4614		/* skip comments */
4615		chptr = tmplLine->indent;
4616		while (*chptr && isspace(*chptr))
4617		chptr++;
4618		if (*chptr == '#')
4619		continue;
4620
4621		if (iskernel(tmplLine->type)
4622		&& tmplLine->numElements >= 2) {
4623		if (!template->multiboot && (needs & NEED_MB)) {
4624		/* it's not a multiboot template and
4625		* this is the kernel line.  Try to
4626		* be intelligent about inserting the
4627		* hypervisor at the same time.
4628		*/
4629		if (config->cfi->mbHyperFirst) {
4630		/* insert the hypervisor first */
4631		newLine =
4632		addLine(new, config->cfi,
4633		LT_HYPER,
4634		tmplLine->indent,
4635		newMBKernel +
4636		strlen(prefix));
4637		/* set up for adding the
4638		* kernel line */
4639		free(tmplLine->indent);
4640		tmplLine->indent =
4641		strdup(config->
4642		secondaryIndent);
4643		needs &= ~NEED_MB;
4644		}
4645		if (needs & NEED_KERNEL) {
4646		/* use addLineTmpl to
4647		* preserve line elements,
4648		* otherwise we could just
4649		* call addLine.
4650		* Unfortunately this means
4651		* making some changes to the
4652		* template such as the
4653		* indent change above and
4654		* the type change below.
4655		*/
4656		struct keywordTypes *mbm_kw =
4657		getKeywordByType
4658		(LT_MBMODULE, config->cfi);
4659		if (mbm_kw) {
4660		tmplLine->type =
4661		LT_MBMODULE;
4662		free(tmplLine->
4663		elements[0].item);
4664		tmplLine->elements[0].
4665		item =
4666		strdup(mbm_kw->key);
4667		}
4668		newLine =
4669		addLineTmpl(new, tmplLine,
4670		newLine,
4671		newKernelPath +
4672		strlen(prefix),
4673		config->cfi);
4674		needs &= ~NEED_KERNEL;
4675		}
4676		if (needs & NEED_MB) { /* !mbHyperFirst */
4677		newLine =
4678		addLine(new, config->cfi,
4679		LT_HYPER,
4680		config->
4681		secondaryIndent,
4682		newMBKernel +
4683		strlen(prefix));
4684		needs &= ~NEED_MB;
4685		}
4686		} else if (needs & NEED_KERNEL) {
4687		newLine =
4688		addLineTmpl(new, tmplLine, newLine,
4689		newKernelPath +
4690		strlen(prefix),
4691		config->cfi);
4692		needs &= ~NEED_KERNEL;
4693		}
4694
4695		} else if (tmplLine->type == LT_HYPER &&
4696		tmplLine->numElements >= 2) {
4697		if (needs & NEED_MB) {
4698		newLine =
4699		addLineTmpl(new, tmplLine, newLine,
4700		newMBKernel +
4701		strlen(prefix),
4702		config->cfi);
4703		needs &= ~NEED_MB;
4704		}
4705
4706		} else if (tmplLine->type == LT_MBMODULE &&
4707		tmplLine->numElements >= 2) {
4708		if (new->multiboot) {
4709		if (needs & NEED_KERNEL) {
4710		newLine =
4711		addLineTmpl(new, tmplLine,
4712		newLine,
4713		newKernelPath +
4714		strlen(prefix),
4715		config->cfi);
4716		needs &= ~NEED_KERNEL;
4717		} else if (config->cfi->mbInitRdIsModule
4718		&& (needs & NEED_INITRD)) {
4719		char *initrdVal;
4720		initrdVal =
4721		getInitrdVal(config, prefix,
4722		tmplLine,
4723		newKernelInitrd,
4724		extraInitrds,
4725		extraInitrdCount);
4726		newLine =
4727		addLineTmpl(new, tmplLine,
4728		newLine,
4729		initrdVal,
4730		config->cfi);
4731		free(initrdVal);
4732		needs &= ~NEED_INITRD;
4733		}
4734		} else if (needs & NEED_KERNEL) {
4735		/* template is multi but new is not,
4736		* insert the kernel in the first
4737		* module slot
4738		*/
4739		tmplLine->type =
4740		preferredLineType(LT_KERNEL,
4741		config->cfi);
4742		free(tmplLine->elements[0].item);
4743		tmplLine->elements[0].item =
4744		strdup(getKeywordByType
4745		(tmplLine->type,
4746		config->cfi)->key);
4747		newLine =
4748		addLineTmpl(new, tmplLine, newLine,
4749		newKernelPath +
4750		strlen(prefix),
4751		config->cfi);
4752		needs &= ~NEED_KERNEL;
4753		} else if (needs & NEED_INITRD) {
4754		char *initrdVal;
4755		/* template is multi but new is not,
4756		* insert the initrd in the second
4757		* module slot
4758		*/
4759		tmplLine->type =
4760		preferredLineType(LT_INITRD,
4761		config->cfi);
4762		free(tmplLine->elements[0].item);
4763		tmplLine->elements[0].item =
4764		strdup(getKeywordByType
4765		(tmplLine->type,
4766		config->cfi)->key);
4767		initrdVal =
4768		getInitrdVal(config, prefix,
4769		tmplLine,
4770		newKernelInitrd,
4771		extraInitrds,
4772		extraInitrdCount);
4773		newLine =
4774		addLineTmpl(new, tmplLine, newLine,
4775		initrdVal, config->cfi);
4776		free(initrdVal);
4777		needs &= ~NEED_INITRD;
4778		}
4779
4780		} else if (isinitrd(tmplLine->type)
4781		&& tmplLine->numElements >= 2) {
4782		if (needs & NEED_INITRD && new->multiboot
4783		&& !template->multiboot
4784		&& config->cfi->mbInitRdIsModule) {
4785		/* make sure we don't insert the
4786		* module initrd before the module
4787		* kernel... if we don't do it here,
4788		* it will be inserted following the
4789		* template.
4790		*/
4791		if (!needs & NEED_KERNEL) {
4792		char *initrdVal;
4793
4794		initrdVal =
4795		getInitrdVal(config, prefix,
4796		tmplLine,
4797		newKernelInitrd,
4798		extraInitrds,
4799		extraInitrdCount);
4800		newLine =
4801		addLine(new, config->cfi,
4802		LT_MBMODULE,
4803		config->
4804		secondaryIndent,
4805		initrdVal);
4806		free(initrdVal);
4807		needs &= ~NEED_INITRD;
4808		}
4809		} else if (needs & NEED_INITRD) {
4810		char *initrdVal;
4811		initrdVal =
4812		getInitrdVal(config, prefix,
4813		tmplLine,
4814		newKernelInitrd,
4815		extraInitrds,
4816		extraInitrdCount);
4817		newLine =
4818		addLineTmpl(new, tmplLine, newLine,
4819		initrdVal, config->cfi);
4820		free(initrdVal);
4821		needs &= ~NEED_INITRD;
4822		}
4823
4824		} else if (tmplLine->type == LT_MENUENTRY &&
4825		(needs & NEED_TITLE)) {
4826		requote(tmplLine, config->cfi);
4827		char *nkt = malloc(strlen(newKernelTitle) + 3);
4828		strcpy(nkt, "'");
4829		strcat(nkt, newKernelTitle);
4830		strcat(nkt, "'");
4831		newLine =
4832		addLineTmpl(new, tmplLine, newLine, nkt,
4833		config->cfi);
4834		free(nkt);
4835		needs &= ~NEED_TITLE;
4836		} else if (tmplLine->type == LT_TITLE &&
4837		(needs & NEED_TITLE)) {
4838		if (tmplLine->numElements >= 2) {
4839		newLine =
4840		addLineTmpl(new, tmplLine, newLine,
4841		newKernelTitle,
4842		config->cfi);
4843		needs &= ~NEED_TITLE;
4844		} else if (tmplLine->numElements == 1 &&
4845		config->cfi->titleBracketed) {
4846		/* addLineTmpl doesn't handle
4847		* titleBracketed */
4848		newLine =
4849		addLine(new, config->cfi, LT_TITLE,
4850		tmplLine->indent,
4851		newKernelTitle);
4852		needs &= ~NEED_TITLE;
4853		}
4854		} else if (tmplLine->type == LT_ECHO) {
4855		requote(tmplLine, config->cfi);
4856		static const char *prefix = "'Loading ";
4857		if (tmplLine->numElements > 1 &&
4858		strstr(tmplLine->elements[1].item, prefix)
4859		&& masterLine->next
4860		&& iskernel(masterLine->next->type)) {
4861		char *newTitle =
4862		malloc(strlen(prefix) +
4863		strlen(newKernelTitle) + 2);
4864
4865		strcpy(newTitle, prefix);
4866		strcat(newTitle, newKernelTitle);
4867		strcat(newTitle, "'");
4868		newLine =
4869		addLine(new, config->cfi, LT_ECHO,
4870		tmplLine->indent, newTitle);
4871		free(newTitle);
4872		} else {
4873		/* pass through other lines from the
4874		* template */
4875		newLine =
4876		addLineTmpl(new, tmplLine, newLine,
4877		NULL, config->cfi);
4878		}
4879		} else if (tmplLine->type == LT_DEVTREE &&
4880		tmplLine->numElements == 2
4881		&& newDevTreePath) {
4882		newLine =
4883		addLineTmpl(new, tmplLine, newLine,
4884		newDevTreePath + strlen(prefix),
4885		config->cfi);
4886		needs &= ~NEED_DEVTREE;
4887		} else if (tmplLine->type == LT_ENTRY_END
4888		&& needs & NEED_DEVTREE) {
4889		const char *ndtp = newDevTreePath;
4890		if (!strncmp
4891		(newDevTreePath, prefix, strlen(prefix)))
4892		ndtp += strlen(prefix);
4893		newLine = addLine(new, config->cfi, LT_DEVTREE,
4894		config->secondaryIndent,
4895		ndtp);
4896		needs &= ~NEED_DEVTREE;
4897		newLine =
4898		addLineTmpl(new, tmplLine, newLine, NULL,
4899		config->cfi);
4900		} else {
4901		/* pass through other lines from the template */
4902		newLine =
4903		addLineTmpl(new, tmplLine, newLine, NULL,
4904		config->cfi);
4905		}
4906		}
4907
4908		} else {
4909		/* don't have a template, so start the entry with the
4910		* appropriate starting line
4911		*/
4912		switch (config->cfi->entryStart) {
4913		case LT_KERNEL:
4914		case LT_KERNEL_EFI:
4915		case LT_KERNEL_16:
4916		if (new->multiboot && config->cfi->mbHyperFirst) {
4917		/* fall through to LT_HYPER */
4918		} else {
4919		newLine = addLine(new, config->cfi,
4920		preferredLineType(LT_KERNEL,
4921		config->
4922		cfi),
4923		config->primaryIndent,
4924		newKernelPath +
4925		strlen(prefix));
4926		needs &= ~NEED_KERNEL;
4927		break;
4928		}
4929
4930		case LT_HYPER:
4931		newLine = addLine(new, config->cfi, LT_HYPER,
4932		config->primaryIndent,
4933		newMBKernel + strlen(prefix));
4934		needs &= ~NEED_MB;
4935		break;
4936
4937		case LT_MENUENTRY:{
4938		char *nkt = malloc(strlen(newKernelTitle) + 3);
4939		strcpy(nkt, "'");
4940		strcat(nkt, newKernelTitle);
4941		strcat(nkt, "'");
4942		newLine =
4943		addLine(new, config->cfi, LT_MENUENTRY,
4944		config->primaryIndent, nkt);
4945		free(nkt);
4946		needs &= ~NEED_TITLE;
4947		needs |= NEED_END;
4948		break;
4949		}
4950		case LT_TITLE:
4951		if (useextlinuxmenu != 0) { // We just need useextlinuxmenu to not be zero (set above)
4952		char *templabel;
4953		int x = 0, y = 0;
4954
4955		templabel = strdup(newKernelTitle);
4956		while (templabel[x]) {
4957		if (templabel[x] == ' ') {
4958		y = x;
4959		while (templabel[y]) {
4960		templabel[y] =
4961		templabel[y + 1];
4962		y++;
4963		}
4964		}
4965		x++;
4966		}
4967		newLine = addLine(new, config->cfi, LT_TITLE,
4968		config->primaryIndent,
4969		templabel);
4970		free(templabel);
4971		} else {
4972		newLine = addLine(new, config->cfi, LT_TITLE,
4973		config->primaryIndent,
4974		newKernelTitle);
4975		}
4976		needs &= ~NEED_TITLE;
4977		break;
4978
4979		default:
4980		abort();
4981		}
4982		}
4983
4984		struct singleLine *endLine = NULL;
4985		endLine = getLineByType(LT_ENTRY_END, new->lines);
4986		if (endLine) {
4987		removeLine(new, endLine);
4988		needs |= NEED_END;
4989		}
4990
4991		/* add the remainder of the lines, i.e. those that either
4992		* weren't present in the template, or in the case of no template,
4993		* all the lines following the entryStart.
4994		*/
4995		if (needs & NEED_TITLE) {
4996		newLine = addLine(new, config->cfi, LT_TITLE,
4997		config->secondaryIndent, newKernelTitle);
4998		needs &= ~NEED_TITLE;
4999		}
5000		if ((needs & NEED_MB) && config->cfi->mbHyperFirst) {
5001		newLine = addLine(new, config->cfi, LT_HYPER,
5002		config->secondaryIndent,
5003		newMBKernel + strlen(prefix));
5004		needs &= ~NEED_MB;
5005		}
5006		if (needs & NEED_KERNEL) {
5007		newLine = addLine(new, config->cfi,
5008		(new->multiboot
5009		&& getKeywordByType(LT_MBMODULE,
5010		config->cfi))
5011		? LT_MBMODULE : preferredLineType(LT_KERNEL,
5012		config->
5013		cfi),
5014		config->secondaryIndent,
5015		newKernelPath + strlen(prefix));
5016		needs &= ~NEED_KERNEL;
5017		}
5018		if (needs & NEED_MB) {
5019		newLine = addLine(new, config->cfi, LT_HYPER,
5020		config->secondaryIndent,
5021		newMBKernel + strlen(prefix));
5022		needs &= ~NEED_MB;
5023		}
5024		if (needs & NEED_INITRD) {
5025		char *initrdVal;
5026		initrdVal =
5027		getInitrdVal(config, prefix, NULL, newKernelInitrd,
5028		extraInitrds, extraInitrdCount);
5029		newLine =
5030		addLine(new, config->cfi,
5031		(new->multiboot
5032		&& getKeywordByType(LT_MBMODULE, config->cfi))
5033		? LT_MBMODULE : preferredLineType(LT_INITRD,
5034		config->cfi),
5035		config->secondaryIndent, initrdVal);
5036		free(initrdVal);
5037		needs &= ~NEED_INITRD;
5038		}
5039		if (needs & NEED_DEVTREE) {
5040		newLine = addLine(new, config->cfi, LT_DEVTREE,
5041		config->secondaryIndent, newDevTreePath);
5042		needs &= ~NEED_DEVTREE;
5043		}
5044
5045		/* NEEDS_END must be last on bootloaders that need it... */
5046		if (needs & NEED_END) {
5047		newLine = addLine(new, config->cfi, LT_ENTRY_END,
5048		config->secondaryIndent, NULL);
5049		needs &= ~NEED_END;
5050		}
5051
5052		if (needs) {
5053		printf(_("grubby: needs=%d, aborting\n"), needs);
5054		abort();
5055		}
5056
5057		if (updateImage(config, indexs, prefix, newKernelArgs, NULL,
5058		newMBKernelArgs, NULL)) {
5059		config->isModified = 1;
5060		return 1;
5061		}
5062
5063		return 0;
5064		}
5065
5066		int main(int argc, const char **argv)
5067		{
5068		poptContext optCon;
5069		const char *grubConfig = NULL;
5070		char *outputFile = NULL;
5071		int arg = 0;
5072		int flags = 0;
5073		int badImageOkay = 0;
5074		int configureGrub2 = 0;
5075		int configureLilo = 0, configureELilo = 0, configureGrub = 0;
5076		int configureYaboot = 0, configureSilo = 0, configureZipl = 0;
5077		int configureExtLinux = 0;
5078		int bootloaderProbe = 0;
5079		int extraInitrdCount = 0;
5080		char *updateKernelPath = NULL;
5081		char *newKernelPath = NULL;
5082		char *removeKernelPath = NULL;
5083		char *newKernelArgs = NULL;
5084		char *newKernelInitrd = NULL;
5085		char *newKernelTitle = NULL;
5086		char *newDevTreePath = NULL;
5087		char *newMBKernel = NULL;
5088		char *newMBKernelArgs = NULL;
5089		int newIndex = 0;
5090		char *removeMBKernelArgs = NULL;
5091		char *removeMBKernel = NULL;
5092		char *bootPrefix = NULL;
5093		char *defaultKernel = NULL;
5094		char *removeArgs = NULL;
5095		char *kernelInfo = NULL;
5096		char *extraInitrds[MAX_EXTRA_INITRDS] = { NULL };
5097		char *envPath = NULL;
5098		const char *chptr = NULL;
5099		struct configFileInfo *cfi = NULL;
5100		struct grubConfig *config;
5101		struct singleEntry *template = NULL;
5102		int copyDefault = 0, makeDefault = 0;
5103		int displayDefault = 0;
5104		int displayDefaultIndex = 0;
5105		int displayDefaultTitle = 0;
5106		int defaultIndex = -1;
5107		struct poptOption options[] = {
5108		{"add-kernel", 0, POPT_ARG_STRING, &newKernelPath, 0,
5109		_("add an entry for the specified kernel"), _("kernel-path")},
5110		{"add-multiboot", 0, POPT_ARG_STRING, &newMBKernel, 0,
5111		_("add an entry for the specified multiboot kernel"), NULL},
5112		{"args", 0, POPT_ARG_STRING, &newKernelArgs, 0,
5113		_("default arguments for the new kernel or new arguments for "
5114		"kernel being updated"), _("args")},
5115		{"mbargs", 0, POPT_ARG_STRING, &newMBKernelArgs, 0,
5116		_("default arguments for the new multiboot kernel or "
5117		"new arguments for multiboot kernel being updated"), NULL},
5118		{"mounts", 0, POPT_ARG_STRING, &mounts, 0,
5119		_("path to fake /proc/mounts file (for testing only)"),
5120		_("mounts")},
5121		{"bad-image-okay", 0, 0, &badImageOkay, 0,
5122		_
5123		("don't sanity check images in boot entries (for testing only)"),
5124		NULL},
5125		{"boot-filesystem", 0, POPT_ARG_STRING, &bootPrefix, 0,
5126		_
5127		("filesystem which contains /boot directory (for testing only)"),
5128		_("bootfs")},
5129		#if defined(__i386__) || defined(__x86_64__) || defined (__powerpc64__) || defined (__ia64__)
5130		{"bootloader-probe", 0, POPT_ARG_NONE, &bootloaderProbe, 0,
5131		_("check which bootloader is installed on boot sector")},
5132		#endif
5133		{"config-file", 'c', POPT_ARG_STRING, &grubConfig, 0,
5134		_("path to grub config file to update (\"-\" for stdin)"),
5135		_("path")},
5136		{"copy-default", 0, 0, &copyDefault, 0,
5137		_("use the default boot entry as a template for the new entry "
5138		"being added; if the default is not a linux image, or if "
5139		"the kernel referenced by the default image does not exist, "
5140		"the first linux entry whose kernel does exist is used as the "
5141		"template"), NULL},
5142		{"debug", 0, 0, &debug, 0,
5143		_("print debugging information for failures")},
5144		{"default-kernel", 0, 0, &displayDefault, 0,
5145		_("display the path of the default kernel")},
5146		{"default-index", 0, 0, &displayDefaultIndex, 0,
5147		_("display the index of the default kernel")},
5148		{"default-title", 0, 0, &displayDefaultTitle, 0,
5149		_("display the title of the default kernel")},
5150		{"devtree", 0, POPT_ARG_STRING, &newDevTreePath, 0,
5151		_("device tree file for new stanza"), _("dtb-path")},
5152		{"devtreedir", 0, POPT_ARG_STRING, &newDevTreePath, 0,
5153		_("device tree directory for new stanza"), _("dtb-path")},
5154		{"elilo", 0, POPT_ARG_NONE, &configureELilo, 0,
5155		_("configure elilo bootloader")},
5156		{"efi", 0, POPT_ARG_NONE, &isEfi, 0,
5157		_("force grub2 stanzas to use efi")},
5158		{"env", 0, POPT_ARG_STRING, &envPath, 0,
5159		_("path for environment data"),
5160		_("path")},
5161		{"extlinux", 0, POPT_ARG_NONE, &configureExtLinux, 0,
5162		_("configure extlinux bootloader (from syslinux)")},
5163		{"grub", 0, POPT_ARG_NONE, &configureGrub, 0,
5164		_("configure grub bootloader")},
5165		{"grub2", 0, POPT_ARG_NONE, &configureGrub2, 0,
5166		_("configure grub2 bootloader")},
5167		{"info", 0, POPT_ARG_STRING, &kernelInfo, 0,
5168		_("display boot information for specified kernel"),
5169		_("kernel-path")},
5170		{"initrd", 0, POPT_ARG_STRING, &newKernelInitrd, 0,
5171		_("initrd image for the new kernel"), _("initrd-path")},
5172		{"extra-initrd", 'i', POPT_ARG_STRING, NULL, 'i',
5173		_
5174		("auxiliary initrd image for things other than the new kernel"),
5175		_("initrd-path")},
5176		{"lilo", 0, POPT_ARG_NONE, &configureLilo, 0,
5177		_("configure lilo bootloader")},
5178		{"make-default", 0, 0, &makeDefault, 0,
5179		_("make the newly added entry the default boot entry"), NULL},
5180		{"output-file", 'o', POPT_ARG_STRING, &outputFile, 0,
5181		_("path to output updated config file (\"-\" for stdout)"),
5182		_("path")},
5183		{"remove-args", 0, POPT_ARG_STRING, &removeArgs, 0,
5184		_("remove kernel arguments"), NULL},
5185		{"remove-mbargs", 0, POPT_ARG_STRING, &removeMBKernelArgs, 0,
5186		_("remove multiboot kernel arguments"), NULL},
5187		{"remove-kernel", 0, POPT_ARG_STRING, &removeKernelPath, 0,
5188		_("remove all entries for the specified kernel"),
5189		_("kernel-path")},
5190		{"remove-multiboot", 0, POPT_ARG_STRING, &removeMBKernel, 0,
5191		_("remove all entries for the specified multiboot kernel"),
5192		NULL},
5193		{"set-default", 0, POPT_ARG_STRING, &defaultKernel, 0,
5194		_("make the first entry referencing the specified kernel "
5195		"the default"), _("kernel-path")},
5196		{"set-default-index", 0, POPT_ARG_INT, &defaultIndex, 0,
5197		_("make the given entry index the default entry"),
5198		_("entry-index")},
5199		{"set-index", 0, POPT_ARG_INT, &newIndex, 0,
5200		_("use the given index when creating a new entry"),
5201		_("entry-index")},
5202		{"silo", 0, POPT_ARG_NONE, &configureSilo, 0,
5203		_("configure silo bootloader")},
5204		{"title", 0, POPT_ARG_STRING, &newKernelTitle, 0,
5205		_("title to use for the new kernel entry"), _("entry-title")},
5206		{"update-kernel", 0, POPT_ARG_STRING, &updateKernelPath, 0,
5207		_("updated information for the specified kernel"),
5208		_("kernel-path")},
5209		{"version", 'v', 0, NULL, 'v',
5210		_("print the version of this program and exit"), NULL},
5211		{"yaboot", 0, POPT_ARG_NONE, &configureYaboot, 0,
5212		_("configure yaboot bootloader")},
5213		{"zipl", 0, POPT_ARG_NONE, &configureZipl, 0,
5214		_("configure zipl bootloader")},
5215		POPT_AUTOHELP {0, 0, 0, 0, 0}
5216		};
5217
5218		useextlinuxmenu = 0;
5219
5220		int i = 0;
5221		for (int j = 1; j < argc; j++)
5222		i += strlen(argv[j]) + 1;
5223
5224		if (i > 0) {
5225		saved_command_line = malloc(i);
5226		if (!saved_command_line) {
5227		fprintf(stderr, "grubby: %m\n");
5228		exit(1);
5229		}
5230
5231		saved_command_line[0] = '\0';
5232		int cmdline_len = 0, arg_len;
5233		for (int j = 1; j < argc; j++) {
5234		arg_len = strlen(argv[j]);
5235		memcpy(saved_command_line + cmdline_len, argv[j], arg_len);
5236		cmdline_len += arg_len;
5237		if (j != argc - 1) {
5238		memcpy(saved_command_line + cmdline_len, " ", 1);
5239		cmdline_len++;
5240		}
5241		}
5242		saved_command_line[cmdline_len] = '\0';
5243		}
5244
5245		optCon = poptGetContext("grubby", argc, argv, options, 0);
5246		poptReadDefaultConfig(optCon, 1);
5247
5248		while ((arg = poptGetNextOpt(optCon)) >= 0) {
5249		switch (arg) {
5250		case 'v':
5251		printf("grubby version %s\n", VERSION);
5252		exit(0);
5253		break;
5254		case 'i':
5255		if (extraInitrdCount < MAX_EXTRA_INITRDS) {
5256		extraInitrds[extraInitrdCount++] =
5257		strdup(poptGetOptArg(optCon));
5258		} else {
5259		fprintf(stderr,
5260		_
5261		("grubby: extra initrd maximum is %d\n"),
5262		extraInitrdCount);
5263		return 1;
5264		}
5265		break;
5266		}
5267		}
5268
5269		if (arg < -1) {
5270		fprintf(stderr, _("grubby: bad argument %s: %s\n"),
5271		poptBadOption(optCon, POPT_BADOPTION_NOALIAS),
5272		poptStrerror(arg));
5273		return 1;
5274		}
5275
5276		if ((chptr = poptGetArg(optCon))) {
5277		fprintf(stderr, _("grubby: unexpected argument %s\n"), chptr);
5278		return 1;
5279		}
5280
5281		if ((configureLilo + configureGrub2 + configureGrub + configureELilo +
5282		configureYaboot + configureSilo + configureZipl +
5283		configureExtLinux) > 1) {
5284		fprintf(stderr,
5285		_("grubby: cannot specify multiple bootloaders\n"));
5286		return 1;
5287		} else if (bootloaderProbe && grubConfig) {
5288		fprintf(stderr,
5289		_
5290		("grubby: cannot specify config file with --bootloader-probe\n"));
5291		return 1;
5292		} else if (configureGrub2) {
5293		cfi = &grub2ConfigType;
5294		if (envPath)
5295		cfi->envFile = envPath;
5296		} else if (configureLilo) {
5297		cfi = &liloConfigType;
5298		} else if (configureGrub) {
5299		cfi = &grubConfigType;
5300		} else if (configureELilo) {
5301		cfi = &eliloConfigType;
5302		} else if (configureYaboot) {
5303		cfi = &yabootConfigType;
5304		} else if (configureSilo) {
5305		cfi = &siloConfigType;
5306		} else if (configureZipl) {
5307		cfi = &ziplConfigType;
5308		} else if (configureExtLinux) {
5309		cfi = &extlinuxConfigType;
5310		useextlinuxmenu = 1;
5311		}
5312
5313		if (!cfi) {
5314		if (grub2FindConfig(&grub2ConfigType)) {
5315		cfi = &grub2ConfigType;
5316		configureGrub2 = 1;
5317		if (envPath)
5318		cfi->envFile = envPath;
5319		} else {
5320		#ifdef __ia64__
5321		cfi = &eliloConfigType;
5322		configureLilo = 1;
5323		#elif defined(__powerpc__)
5324		cfi = &yabootConfigType;
5325		configureYaboot = 1;
5326		#elif defined(__sparc__)
5327		cfi = &siloConfigType;
5328		configureSilo = 1;
5329		#elif defined(__s390__) || defined(__s390x__)
5330		cfi = &ziplConfigType;
5331		configureZipl = 1;
5332		#else
5333		cfi = &grubConfigType;
5334		configureGrub = 1;
5335		#endif
5336		}
5337		}
5338
5339		if (!grubConfig) {
5340		if (cfi->findConfig)
5341		grubConfig = cfi->findConfig(cfi);
5342		if (!grubConfig)
5343		grubConfig = cfi->defaultConfig;
5344		}
5345
5346		if (bootloaderProbe && (displayDefault || kernelInfo ||
5347		newKernelPath || removeKernelPath || makeDefault
5348		|| defaultKernel || displayDefaultIndex
5349		|| displayDefaultTitle
5350		|| (defaultIndex >= 0))) {
5351		fprintf(stderr,
5352		_("grubby: --bootloader-probe may not be used with "
5353		"specified option"));
5354		return 1;
5355		}
5356
5357		if ((displayDefault || kernelInfo) && (newKernelPath ||
5358		removeKernelPath)) {
5359		fprintf(stderr, _("grubby: --default-kernel and --info may not "
5360		"be used when adding or removing kernels\n"));
5361		return 1;
5362		}
5363
5364		if (newKernelPath && !newKernelTitle) {
5365		fprintf(stderr, _("grubby: kernel title must be specified\n"));
5366		return 1;
5367		} else if (!newKernelPath && (copyDefault ||
5368		(newKernelInitrd && !updateKernelPath) ||
5369		makeDefault || extraInitrdCount > 0)) {
5370		fprintf(stderr, _("grubby: kernel path expected\n"));
5371		return 1;
5372		}
5373
5374		if (newKernelPath && updateKernelPath) {
5375		fprintf(stderr, _("grubby: --add-kernel and --update-kernel may"
5376		"not be used together"));
5377		return 1;
5378		}
5379
5380		if (makeDefault && defaultKernel) {
5381		fprintf(stderr, _("grubby: --make-default and --default-kernel "
5382		"may not be used together\n"));
5383		return 1;
5384		} else if (defaultKernel && removeKernelPath &&
5385		!strcmp(defaultKernel, removeKernelPath)) {
5386		fprintf(stderr,
5387		_("grubby: cannot make removed kernel the default\n"));
5388		return 1;
5389		} else if (defaultKernel && newKernelPath &&
5390		!strcmp(defaultKernel, newKernelPath)) {
5391		makeDefault = 1;
5392		defaultKernel = NULL;
5393		} else if (defaultKernel && (defaultIndex >= 0)) {
5394		fprintf(stderr,
5395		_("grubby: --set-default and --set-default-index "
5396		"may not be used together\n"));
5397		return 1;
5398		}
5399
5400		if (grubConfig && !strcmp(grubConfig, "-") && !outputFile) {
5401		fprintf(stderr,
5402		_("grubby: output file must be specified if stdin "
5403		"is used\n"));
5404		return 1;
5405		}
5406
5407		if (!removeKernelPath && !newKernelPath && !displayDefault
5408		&& !defaultKernel && !kernelInfo && !bootloaderProbe
5409		&& !updateKernelPath && !removeMBKernel && !displayDefaultIndex
5410		&& !displayDefaultTitle && (defaultIndex == -1)) {
5411		fprintf(stderr, _("grubby: no action specified\n"));
5412		return 1;
5413		}
5414
5415		flags |= badImageOkay ? GRUBBY_BADIMAGE_OKAY : 0;
5416
5417		if (cfi->needsBootPrefix) {
5418		if (!bootPrefix) {
5419		bootPrefix = findBootPrefix();
5420		if (!bootPrefix)
5421		return 1;
5422		} else {
5423		/* this shouldn't end with a / */
5424		if (bootPrefix[strlen(bootPrefix) - 1] == '/')
5425		bootPrefix[strlen(bootPrefix) - 1] = '\0';
5426		}
5427		} else {
5428		bootPrefix = "";
5429		}
5430
5431		if (!cfi->mbAllowExtraInitRds && extraInitrdCount > 0) {
5432		fprintf(stderr,
5433		_("grubby: %s doesn't allow multiple initrds\n"),
5434		cfi->defaultConfig);
5435		return 1;
5436		}
5437
5438		if (bootloaderProbe) {
5439		int lrc = 0, grc = 0, gr2c = 0, extrc = 0, yrc = 0, erc = 0;
5440		struct grubConfig *lconfig, *gconfig, *yconfig, *econfig;
5441
5442		const char *grub2config = grub2FindConfig(&grub2ConfigType);
5443		if (grub2config) {
5444		gconfig = readConfig(grub2config, &grub2ConfigType);
5445		if (!gconfig)
5446		gr2c = 1;
5447		else
5448		gr2c = checkForGrub2(gconfig);
5449		}
5450
5451		const char *grubconfig = grubFindConfig(&grubConfigType);
5452		if (!access(grubconfig, F_OK)) {
5453		gconfig = readConfig(grubconfig, &grubConfigType);
5454		if (!gconfig)
5455		grc = 1;
5456		else
5457		grc = checkForGrub(gconfig);
5458		}
5459
5460		if (!access(liloConfigType.defaultConfig, F_OK)) {
5461		lconfig =
5462		readConfig(liloConfigType.defaultConfig,
5463		&liloConfigType);
5464		if (!lconfig)
5465		lrc = 1;
5466		else
5467		lrc = checkForLilo(lconfig);
5468		}
5469
5470		if (!access(eliloConfigType.defaultConfig, F_OK)) {
5471		econfig = readConfig(eliloConfigType.defaultConfig,
5472		&eliloConfigType);
5473		if (!econfig)
5474		erc = 1;
5475		else
5476		erc = checkForElilo(econfig);
5477		}
5478
5479		if (!access(extlinuxConfigType.defaultConfig, F_OK)) {
5480		lconfig =
5481		readConfig(extlinuxConfigType.defaultConfig,
5482		&extlinuxConfigType);
5483		if (!lconfig)
5484		extrc = 1;
5485		else
5486		extrc = checkForExtLinux(lconfig);
5487		}
5488
5489		if (!access(yabootConfigType.defaultConfig, F_OK)) {
5490		yconfig = readConfig(yabootConfigType.defaultConfig,
5491		&yabootConfigType);
5492		if (!yconfig)
5493		yrc = 1;
5494		else
5495		yrc = checkForYaboot(yconfig);
5496		}
5497
5498		if (lrc == 1 || grc == 1 || gr2c == 1 || extrc == 1 || yrc == 1
5499		|| erc == 1)
5500		return 1;
5501
5502		if (lrc == 2)
5503		printf("lilo\n");
5504		if (gr2c == 2)
5505		printf("grub2\n");
5506		if (grc == 2)
5507		printf("grub\n");
5508		if (extrc == 2)
5509		printf("extlinux\n");
5510		if (yrc == 2)
5511		printf("yaboot\n");
5512		if (erc == 2)
5513		printf("elilo\n");
5514
5515		return 0;
5516		}
5517
5518		if (grubConfig == NULL) {
5519		printf("Could not find bootloader configuration file.\n");
5520		exit(1);
5521		}
5522
5523		config = readConfig(grubConfig, cfi);
5524		if (!config)
5525		return 1;
5526
5527		if (displayDefault) {
5528		struct singleLine *line;
5529		struct singleEntry *entry;
5530		size_t rs;
5531
5532		if (config->defaultImage == NO_DEFAULT_ENTRY)
5533		return 0;
5534		if (config->defaultImage == DEFAULT_SAVED_GRUB2 &&
5535		cfi->defaultIsSaved)
5536		config->defaultImage = FIRST_ENTRY_INDEX;
5537		entry = findEntryByIndex(config, config->defaultImage);
5538		if (!entry)
5539		return 0;
5540
5541		/* check if is a suitable image but still print it */
5542		suitableImage(entry, bootPrefix, 0, flags);
5543
5544		line =
5545		getLineByType(LT_KERNEL | LT_HYPER | LT_KERNEL_EFI |
5546		LT_KERNEL_16, entry->lines);
5547		if (!line)
5548		return 0;
5549
5550		rs = getRootSpecifier(line->elements[1].item);
5551		printf("%s%s\n", bootPrefix, line->elements[1].item + rs);
5552
5553		return 0;
5554
5555		} else if (displayDefaultTitle) {
5556		struct singleLine *line;
5557		struct singleEntry *entry;
5558
5559		if (config->defaultImage == NO_DEFAULT_ENTRY)
5560		return 0;
5561		if (config->defaultImage == DEFAULT_SAVED_GRUB2 &&
5562		cfi->defaultIsSaved)
5563		config->defaultImage = FIRST_ENTRY_INDEX;
5564		entry = findEntryByIndex(config, config->defaultImage);
5565		if (!entry)
5566		return 0;
5567
5568		if (!configureGrub2) {
5569		char *title;
5570		line = getLineByType(LT_TITLE, entry->lines);
5571		if (!line)
5572		return 0;
5573		title = extractTitle(config, line);
5574		if (!title)
5575		return 0;
5576		printf("%s\n", title);
5577		free(title);
5578		} else {
5579		char *title;
5580
5581		dbgPrintf
5582		("This is GRUB2, default title is embeded in menuentry\n");
5583		line = getLineByType(LT_MENUENTRY, entry->lines);
5584		if (!line)
5585		return 0;
5586		title = grub2ExtractTitle(line);
5587		if (title)
5588		printf("%s\n", title);
5589		}
5590		return 0;
5591
5592		} else if (displayDefaultIndex) {
5593		if (config->defaultImage == NO_DEFAULT_ENTRY)
5594		return 0;
5595		if (config->defaultImage == DEFAULT_SAVED_GRUB2 &&
5596		cfi->defaultIsSaved)
5597		config->defaultImage = FIRST_ENTRY_INDEX;
5598		printf("%i\n", config->defaultImage);
5599		return 0;
5600
5601		} else if (kernelInfo)
5602		return displayInfo(config, kernelInfo, bootPrefix);
5603
5604		if (copyDefault) {
5605		template = findTemplate(config, bootPrefix, NULL, 0, flags);
5606		if (!template)
5607		return 1;
5608		}
5609
5610		markRemovedImage(config, removeKernelPath, bootPrefix);
5611		markRemovedImage(config, removeMBKernel, bootPrefix);
5612		setDefaultImage(config, newKernelPath != NULL, defaultKernel,
5613		makeDefault, bootPrefix, flags, defaultIndex,
5614		newIndex);
5615		setFallbackImage(config, newKernelPath != NULL);
5616		if (updateImage(config, updateKernelPath, bootPrefix, newKernelArgs,
5617		removeArgs, newMBKernelArgs, removeMBKernelArgs))
5618		return 1;
5619		if (updateKernelPath && newKernelInitrd) {
5620		if (newMBKernel) {
5621		if (addMBInitrd(config, newMBKernel, updateKernelPath,
5622		bootPrefix, newKernelInitrd,
5623		newKernelTitle))
5624		return 1;
5625		} else {
5626		if (updateInitrd(config, updateKernelPath, bootPrefix,
5627		newKernelInitrd, newKernelTitle))
5628		return 1;
5629		}
5630		}
5631		if (addNewKernel(config, template, bootPrefix, newKernelPath,
5632		newKernelTitle, newKernelArgs, newKernelInitrd,
5633		(const char **)extraInitrds, extraInitrdCount,
5634		newMBKernel, newMBKernelArgs, newDevTreePath,
5635		newIndex))
5636		return 1;
5637
5638		if (numEntries(config) == 0) {
5639		fprintf(stderr,
5640		_("grubby: doing this would leave no kernel entries. "
5641		"Not writing out new config.\n"));
5642		return 1;
5643		}
5644
5645	if (!outputFile)	if (!outputFile)
5646	outputFile = grubConfig;	outputFile = (char *)grubConfig;
5647
5648	return writeConfig(config, outputFile, bootPrefix);	return writeConfig(config, outputFile, bootPrefix);
5649	}	}

---

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Legend: Removed from v.1692   changed lines   Added in v.3153