Diff of /trunk/grubby/grubby.c

Parent Directory | Revision Log | Patch

	revision 1693 by niro, Fri Feb 17 23:21:08 2012 UTC	revision 3138 by niro, Tue Jul 7 11:11:04 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	/* comments get lumped in with indention */	/* comments get lumped in with indention */
72	struct lineElement {	struct lineElement {
73	char * item;	char *item;
74	char * indent;	char *indent;
75	};	};
76
77	enum lineType_e {	enum lineType_e {
78	LT_WHITESPACE = 1 << 0,	LT_UNIDENTIFIED = 0,
79	LT_TITLE      = 1 << 1,	LT_WHITESPACE = 1 << 0,
80	LT_KERNEL     = 1 << 2,	LT_TITLE = 1 << 1,
81	LT_INITRD     = 1 << 3,	LT_KERNEL = 1 << 2,
82	LT_HYPER      = 1 << 4,	LT_INITRD = 1 << 3,
83	LT_DEFAULT    = 1 << 5,	LT_HYPER = 1 << 4,
84	LT_MBMODULE   = 1 << 6,	LT_DEFAULT = 1 << 5,
85	LT_ROOT       = 1 << 7,	LT_MBMODULE = 1 << 6,
86	LT_FALLBACK   = 1 << 8,	LT_ROOT = 1 << 7,
87	LT_KERNELARGS = 1 << 9,	LT_FALLBACK = 1 << 8,
88	LT_BOOT       = 1 << 10,	LT_KERNELARGS = 1 << 9,
89	LT_BOOTROOT   = 1 << 11,	LT_BOOT = 1 << 10,
90	LT_LBA        = 1 << 12,	LT_BOOTROOT = 1 << 11,
91	LT_OTHER      = 1 << 13,	LT_LBA = 1 << 12,
92	LT_GENERIC    = 1 << 14,	LT_OTHER = 1 << 13,
93	LT_UNKNOWN    = 1 << 15,	LT_GENERIC = 1 << 14,
94		LT_ECHO = 1 << 16,
95		LT_MENUENTRY = 1 << 17,
96		LT_ENTRY_END = 1 << 18,
97		LT_SET_VARIABLE = 1 << 19,
98		LT_KERNEL_EFI = 1 << 20,
99		LT_INITRD_EFI = 1 << 21,
100		LT_KERNEL_16 = 1 << 22,
101		LT_INITRD_16 = 1 << 23,
102		LT_DEVTREE = 1 << 24,
103		LT_UNKNOWN = 1 << 25,
104	};	};
105
106	struct singleLine {	struct singleLine {
107	char * indent;	char *indent;
108	int numElements;	int numElements;
109	struct lineElement * elements;	struct lineElement *elements;
110	struct singleLine * next;	struct singleLine *next;
111	enum lineType_e type;	enum lineType_e type;
112	};	};
113
114	struct singleEntry {	struct singleEntry {
115	struct singleLine * lines;	struct singleLine *lines;
116	int skip;	int skip;
117	int multiboot;	int multiboot;
118	struct singleEntry * next;	struct singleEntry *next;
119	};	};
120
121	#define GRUBBY_BADIMAGE_OKAY (1 << 0)	#define GRUBBY_BADIMAGE_OKAY (1 << 0)
#	Line 99  struct singleEntry {	Line 128  struct singleEntry {
128	#define NEED_TITLE   (1 << 2)	#define NEED_TITLE   (1 << 2)
129	#define NEED_ARGS    (1 << 3)	#define NEED_ARGS    (1 << 3)
130	#define NEED_MB      (1 << 4)	#define NEED_MB      (1 << 4)
131		#define NEED_END     (1 << 5)
132		#define NEED_DEVTREE (1 << 6)
133
134	#define MAIN_DEFAULT    (1 << 0)	#define MAIN_DEFAULT    (1 << 0)
135		#define FIRST_ENTRY_INDEX    0 /* boot entry index value begin and increment
136		from this initial value */
137		#define NO_DEFAULT_ENTRY    -1 /* indicates that no specific default boot
138		entry was set or currently exists */
139	#define DEFAULT_SAVED       -2	#define DEFAULT_SAVED       -2
140		#define DEFAULT_SAVED_GRUB2 -3
141
142	struct keywordTypes {	struct keywordTypes {
143	char * key;	char *key;
144	enum lineType_e type;	enum lineType_e type;
145	char nextChar;	char nextChar;
146	char separatorChar;	char separatorChar;
147	};	};
148
149		struct configFileInfo;
150
151		typedef const char *(*findConfigFunc) (struct configFileInfo *);
152		typedef const int (*writeLineFunc) (struct configFileInfo *,
153		struct singleLine * line);
154		typedef char *(*getEnvFunc) (struct configFileInfo *, char *name);
155		typedef int (*setEnvFunc) (struct configFileInfo *, char *name, char *value);
156
157	struct configFileInfo {	struct configFileInfo {
158	char * defaultConfig;	char *defaultConfig;
159	struct keywordTypes * keywords;	findConfigFunc findConfig;
160	int defaultIsIndex;	writeLineFunc writeLine;
161	int defaultSupportSaved;	getEnvFunc getEnv;
162	enum lineType_e entryStart;	setEnvFunc setEnv;
163	int needsBootPrefix;	struct keywordTypes *keywords;
164	int argsInQuotes;	int caseInsensitive;
165	int maxTitleLength;	int defaultIsIndex;
166	int titleBracketed;	int defaultIsVariable;
167	int mbHyperFirst;	int defaultSupportSaved;
168	int mbInitRdIsModule;	int defaultIsSaved;
169	int mbConcatArgs;	int defaultIsUnquoted;
170	int mbAllowExtraInitRds;	enum lineType_e entryStart;
171		enum lineType_e entryEnd;
172		int needsBootPrefix;
173		int argsInQuotes;
174		int maxTitleLength;
175		int titleBracketed;
176		int titlePosition;
177		int mbHyperFirst;
178		int mbInitRdIsModule;
179		int mbConcatArgs;
180		int mbAllowExtraInitRds;
181		char *envFile;
182	};	};
183
184	struct keywordTypes grubKeywords[] = {	struct keywordTypes grubKeywords[] = {
185	{ "title",    LT_TITLE,    ' ' },	{"title", LT_TITLE, ' '},
186	{ "root",    LT_BOOTROOT,    ' ' },	{"root", LT_BOOTROOT, ' '},
187	{ "default",    LT_DEFAULT,    ' ' },	{"default", LT_DEFAULT, ' '},
188	{ "fallback",   LT_FALLBACK,    ' ' },	{"fallback", LT_FALLBACK, ' '},
189	{ "kernel",    LT_KERNEL,    ' ' },	{"kernel", LT_KERNEL, ' '},
190	{ "initrd",    LT_INITRD,    ' ', ' ' },	{"initrd", LT_INITRD, ' ', ' '},
191	{ "module",     LT_MBMODULE,    ' ' },	{"module", LT_MBMODULE, ' '},
192	{ "kernel",     LT_HYPER,       ' ' },	{"kernel", LT_HYPER, ' '},
193	{ NULL,    0, 0 },	{NULL, 0, 0},
194	};	};
195
196		const char *grubFindConfig(struct configFileInfo *cfi)
197		{
198		static const char *configFiles[] = {
199		"/boot/grub/grub.conf",
200		"/boot/grub/menu.lst",
201		"/etc/grub.conf",
202		NULL
203		};
204		static int i = -1;
205
206		if (i == -1) {
207		for (i = 0; configFiles[i] != NULL; i++) {
208		dbgPrintf("Checking \"%s\": ", configFiles[i]);
209		if (!access(configFiles[i], R_OK)) {
210		dbgPrintf("found\n");
211		return configFiles[i];
212		}
213		dbgPrintf("not found\n");
214		}
215		}
216		return configFiles[i];
217		}
218
219	struct configFileInfo grubConfigType = {	struct configFileInfo grubConfigType = {
220	.defaultConfig = "/boot/grub/grub.conf",	.findConfig = grubFindConfig,
221	.keywords = grubKeywords,	.keywords = grubKeywords,
222	.defaultIsIndex = 1,	.defaultIsIndex = 1,
223	.defaultSupportSaved = 1,	.defaultSupportSaved = 1,
224	.entryStart = LT_TITLE,	.entryStart = LT_TITLE,
225	.needsBootPrefix = 1,	.needsBootPrefix = 1,
226	.mbHyperFirst = 1,	.mbHyperFirst = 1,
227	.mbInitRdIsModule = 1,	.mbInitRdIsModule = 1,
228	.mbAllowExtraInitRds = 1,	.mbAllowExtraInitRds = 1,
229		.titlePosition = 1,
230		};
231
232		struct keywordTypes grub2Keywords[] = {
233		{"menuentry", LT_MENUENTRY, ' '},
234		{"}", LT_ENTRY_END, ' '},
235		{"echo", LT_ECHO, ' '},
236		{"set", LT_SET_VARIABLE, ' ', '='},
237		{"root", LT_BOOTROOT, ' '},
238		{"default", LT_DEFAULT, ' '},
239		{"fallback", LT_FALLBACK, ' '},
240		{"linux", LT_KERNEL, ' '},
241		{"linuxefi", LT_KERNEL_EFI, ' '},
242		{"linux16", LT_KERNEL_16, ' '},
243		{"initrd", LT_INITRD, ' ', ' '},
244		{"initrdefi", LT_INITRD_EFI, ' ', ' '},
245		{"initrd16", LT_INITRD_16, ' ', ' '},
246		{"module", LT_MBMODULE, ' '},
247		{"kernel", LT_HYPER, ' '},
248		{"devicetree", LT_DEVTREE, ' '},
249		{NULL, 0, 0},
250		};
251
252		const char *grub2FindConfig(struct configFileInfo *cfi)
253		{
254		static const char *configFiles[] = {
255		"/boot/grub/grub-efi.cfg",
256		"/boot/grub/grub.cfg",
257		"/etc/grub2-efi.cfg",
258		"/etc/grub2.cfg",
259		"/boot/grub2/grub.cfg",
260		"/boot/grub2-efi/grub.cfg",
261		NULL
262		};
263		static int i = -1;
264		static const char *grub_cfg = "/boot/grub/grub.cfg";
265		int rc = -1;
266
267		if (i == -1) {
268		for (i = 0; configFiles[i] != NULL; i++) {
269		dbgPrintf("Checking \"%s\": ", configFiles[i]);
270		if ((rc = access(configFiles[i], R_OK))) {
271		if (errno == EACCES) {
272		printf
273		("Unable to access bootloader configuration file "
274		"\"%s\": %m\n", configFiles[i]);
275		exit(1);
276		}
277		continue;
278		} else {
279		dbgPrintf("found\n");
280		return configFiles[i];
281		}
282		}
283		}
284
285		/* Ubuntu renames grub2 to grub, so check for the grub.d directory
286		* that isn't in grub1, and if it exists, return the config file path
287		* that they use. */
288		if (configFiles[i] == NULL && !access("/etc/grub.d/", R_OK)) {
289		dbgPrintf("found\n");
290		return grub_cfg;
291		}
292
293		dbgPrintf("not found\n");
294		return configFiles[i];
295		}
296
297		/* kind of hacky.  It'll give the first 1024 bytes, ish. */
298		static char *grub2GetEnv(struct configFileInfo *info, char *name)
299		{
300		static char buf[1025];
301		char *s = NULL;
302		char *ret = NULL;
303		char *envFile = info->envFile ? info->envFile : "/boot/grub/grubenv";
304		int rc =
305		asprintf(&s, "grub-editenv %s list | grep '^%s='", envFile, name);
306
307		if (rc < 0)
308		return NULL;
309
310		FILE *f = popen(s, "r");
311		if (!f)
312		goto out;
313
314		memset(buf, '\0', sizeof(buf));
315		ret = fgets(buf, 1024, f);
316		pclose(f);
317
318		if (ret) {
319		ret += strlen(name) + 1;
320		ret[strlen(ret) - 1] = '\0';
321		}
322		dbgPrintf("grub2GetEnv(%s): %s\n", name, ret);
323		out:
324		free(s);
325		return ret;
326		}
327
328		static int sPopCount(const char *s, const char *c)
329		{
330		int ret = 0;
331		if (!s)
332		return -1;
333		for (int i = 0; s[i] != '\0'; i++)
334		for (int j = 0; c[j] != '\0'; j++)
335		if (s[i] == c[j])
336		ret++;
337		return ret;
338		}
339
340		static char *shellEscape(const char *s)
341		{
342		int l = strlen(s) + sPopCount(s, "'") * 2;
343
344		char *ret = calloc(l + 1, sizeof(*ret));
345		if (!ret)
346		return NULL;
347		for (int i = 0, j = 0; s[i] != '\0'; i++, j++) {
348		if (s[i] == '\'')
349		ret[j++] = '\\';
350		ret[j] = s[i];
351		}
352		return ret;
353		}
354
355		static void unquote(char *s)
356		{
357		int l = strlen(s);
358
359		if ((s[l - 1] == '\'' && s[0] == '\'')
360		|| (s[l - 1] == '"' && s[0] == '"')) {
361		memmove(s, s + 1, l - 2);
362		s[l - 2] = '\0';
363		}
364		}
365
366		static int grub2SetEnv(struct configFileInfo *info, char *name, char *value)
367		{
368		char *s = NULL;
369		int rc = 0;
370		char *envFile = info->envFile ? info->envFile : "/boot/grub/grubenv";
371
372		unquote(value);
373		value = shellEscape(value);
374		if (!value)
375		return -1;
376
377		rc = asprintf(&s, "grub-editenv %s set '%s=%s'", envFile, name, value);
378		free(value);
379		if (rc < 0)
380		return -1;
381
382		dbgPrintf("grub2SetEnv(%s): %s\n", name, s);
383		rc = system(s);
384		free(s);
385		return rc;
386		}
387
388		/* this is a gigantic hack to avoid clobbering grub2 variables... */
389		static int is_special_grub2_variable(const char *name)
390		{
391		if (!strcmp(name, "\"${next_entry}\""))
392		return 1;
393		if (!strcmp(name, "\"${prev_saved_entry}\""))
394		return 1;
395		return 0;
396		}
397
398		int sizeOfSingleLine(struct singleLine *line)
399		{
400		int count = 0;
401
402		for (int i = 0; i < line->numElements; i++) {
403		int indentSize = 0;
404
405		count = count + strlen(line->elements[i].item);
406
407		indentSize = strlen(line->elements[i].indent);
408		if (indentSize > 0)
409		count = count + indentSize;
410		else
411		/* be extra safe and add room for whitespaces */
412		count = count + 1;
413		}
414
415		/* room for trailing terminator */
416		count = count + 1;
417
418		return count;
419		}
420
421		static int isquote(char q)
422		{
423		if (q == '\'' || q == '\"')
424		return 1;
425		return 0;
426		}
427
428		static int iskernel(enum lineType_e type)
429		{
430		return (type == LT_KERNEL || type == LT_KERNEL_EFI
431		|| type == LT_KERNEL_16);
432		}
433
434		static int isinitrd(enum lineType_e type)
435		{
436		return (type == LT_INITRD || type == LT_INITRD_EFI
437		|| type == LT_INITRD_16);
438		}
439
440		char *grub2ExtractTitle(struct singleLine *line)
441		{
442		char *current;
443		char *current_indent;
444		int current_len;
445		int current_indent_len;
446		int i;
447
448		/* bail out if line does not start with menuentry */
449		if (strcmp(line->elements[0].item, "menuentry"))
450		return NULL;
451
452		i = 1;
453		current = line->elements[i].item;
454		current_len = strlen(current);
455
456		/* if second word is quoted, strip the quotes and return single word */
457		if (isquote(*current) && isquote(current[current_len - 1])) {
458		char *tmp;
459
460		tmp = strdup(current + 1);
461		if (!tmp)
462		return NULL;
463		tmp[strlen(tmp) - 1] = '\0';
464		return tmp;
465		}
466
467		/* if no quotes, return second word verbatim */
468		if (!isquote(*current))
469		return current;
470
471		/* second element start with a quote, so we have to find the element
472		* whose last character is also quote (assuming it's the closing one) */
473		int resultMaxSize;
474		char *result;
475		/* need to ensure that ' does not match " as we search */
476		char quote_char = *current;
477
478		resultMaxSize = sizeOfSingleLine(line);
479		result = malloc(resultMaxSize);
480		snprintf(result, resultMaxSize, "%s", ++current);
481
482		i++;
483		for (; i < line->numElements; ++i) {
484		current = line->elements[i].item;
485		current_len = strlen(current);
486		current_indent = line->elements[i].indent;
487		current_indent_len = strlen(current_indent);
488
489		strncat(result, current_indent, current_indent_len);
490		if (current[current_len - 1] != quote_char) {
491		strncat(result, current, current_len);
492		} else {
493		strncat(result, current, current_len - 1);
494		break;
495		}
496		}
497		return result;
498		}
499
500		struct configFileInfo grub2ConfigType = {
501		.findConfig = grub2FindConfig,
502		.getEnv = grub2GetEnv,
503		.setEnv = grub2SetEnv,
504		.keywords = grub2Keywords,
505		.defaultIsIndex = 1,
506		.defaultSupportSaved = 1,
507		.defaultIsVariable = 1,
508		.entryStart = LT_MENUENTRY,
509		.entryEnd = LT_ENTRY_END,
510		.titlePosition = 1,
511		.needsBootPrefix = 1,
512		.mbHyperFirst = 1,
513		.mbInitRdIsModule = 1,
514		.mbAllowExtraInitRds = 1,
515	};	};
516
517	struct keywordTypes yabootKeywords[] = {	struct keywordTypes yabootKeywords[] = {
518	{ "label",    LT_TITLE,    '=' },	{"label", LT_TITLE, '='},
519	{ "root",    LT_ROOT,    '=' },	{"root", LT_ROOT, '='},
520	{ "default",    LT_DEFAULT,    '=' },	{"default", LT_DEFAULT, '='},
521	{ "image",    LT_KERNEL,    '=' },	{"image", LT_KERNEL, '='},
522	{ "bsd",    LT_GENERIC,    '=' },	{"bsd", LT_GENERIC, '='},
523	{ "macos",    LT_GENERIC,    '=' },	{"macos", LT_GENERIC, '='},
524	{ "macosx",    LT_GENERIC,    '=' },	{"macosx", LT_GENERIC, '='},
525	{ "magicboot",  LT_GENERIC,    '=' },	{"magicboot", LT_GENERIC, '='},
526	{ "darwin",    LT_GENERIC,    '=' },	{"darwin", LT_GENERIC, '='},
527	{ "timeout",    LT_GENERIC,    '=' },	{"timeout", LT_GENERIC, '='},
528	{ "install",    LT_GENERIC,    '=' },	{"install", LT_GENERIC, '='},
529	{ "fstype",    LT_GENERIC,    '=' },	{"fstype", LT_GENERIC, '='},
530	{ "hfstype",    LT_GENERIC,    '=' },	{"hfstype", LT_GENERIC, '='},
531	{ "delay",    LT_GENERIC,    '=' },	{"delay", LT_GENERIC, '='},
532	{ "defaultos",  LT_GENERIC,     '=' },	{"defaultos", LT_GENERIC, '='},
533	{ "init-message", LT_GENERIC,   '=' },	{"init-message", LT_GENERIC, '='},
534	{ "enablecdboot", LT_GENERIC,   ' ' },	{"enablecdboot", LT_GENERIC, ' '},
535	{ "enableofboot", LT_GENERIC,   ' ' },	{"enableofboot", LT_GENERIC, ' '},
536	{ "enablenetboot", LT_GENERIC,  ' ' },	{"enablenetboot", LT_GENERIC, ' '},
537	{ "nonvram",    LT_GENERIC,    ' ' },	{"nonvram", LT_GENERIC, ' '},
538	{ "hide",    LT_GENERIC,    ' ' },	{"hide", LT_GENERIC, ' '},
539	{ "protect",    LT_GENERIC,    ' ' },	{"protect", LT_GENERIC, ' '},
540	{ "nobless",    LT_GENERIC,    ' ' },	{"nobless", LT_GENERIC, ' '},
541	{ "nonvram",    LT_GENERIC,    ' ' },	{"nonvram", LT_GENERIC, ' '},
542	{ "brokenosx",  LT_GENERIC,    ' ' },	{"brokenosx", LT_GENERIC, ' '},
543	{ "usemount",   LT_GENERIC,    ' ' },	{"usemount", LT_GENERIC, ' '},
544	{ "mntpoint",   LT_GENERIC,    '=' },	{"mntpoint", LT_GENERIC, '='},
545	{ "partition",  LT_GENERIC,    '=' },	{"partition", LT_GENERIC, '='},
546	{ "device",    LT_GENERIC,    '=' },	{"device", LT_GENERIC, '='},
547	{ "fstype",    LT_GENERIC,    '=' },	{"fstype", LT_GENERIC, '='},
548	{ "initrd",    LT_INITRD,    '=', ';' },	{"initrd", LT_INITRD, '=', ';'},
549	{ "append",    LT_KERNELARGS,  '=' },	{"append", LT_KERNELARGS, '='},
550	{ "boot",    LT_BOOT,    '=' },	{"boot", LT_BOOT, '='},
551	{ "lba",    LT_LBA,    ' ' },	{"lba", LT_LBA, ' '},
552	{ NULL,    0, 0 },	{NULL, 0, 0},
553	};	};
554
555	struct keywordTypes liloKeywords[] = {	struct keywordTypes liloKeywords[] = {
556	{ "label",    LT_TITLE,    '=' },	{"label", LT_TITLE, '='},
557	{ "root",    LT_ROOT,    '=' },	{"root", LT_ROOT, '='},
558	{ "default",    LT_DEFAULT,    '=' },	{"default", LT_DEFAULT, '='},
559	{ "image",    LT_KERNEL,    '=' },	{"image", LT_KERNEL, '='},
560	{ "other",    LT_OTHER,    '=' },	{"other", LT_OTHER, '='},
561	{ "initrd",    LT_INITRD,    '=' },	{"initrd", LT_INITRD, '='},
562	{ "append",    LT_KERNELARGS,  '=' },	{"append", LT_KERNELARGS, '='},
563	{ "boot",    LT_BOOT,    '=' },	{"boot", LT_BOOT, '='},
564	{ "lba",    LT_LBA,    ' ' },	{"lba", LT_LBA, ' '},
565	{ NULL,    0, 0 },	{NULL, 0, 0},
566	};	};
567
568	struct keywordTypes eliloKeywords[] = {	struct keywordTypes eliloKeywords[] = {
569	{ "label",    LT_TITLE,    '=' },	{"label", LT_TITLE, '='},
570	{ "root",    LT_ROOT,    '=' },	{"root", LT_ROOT, '='},
571	{ "default",    LT_DEFAULT,    '=' },	{"default", LT_DEFAULT, '='},
572	{ "image",    LT_KERNEL,    '=' },	{"image", LT_KERNEL, '='},
573	{ "initrd",    LT_INITRD,    '=' },	{"initrd", LT_INITRD, '='},
574	{ "append",    LT_KERNELARGS,  '=' },	{"append", LT_KERNELARGS, '='},
575	{ "vmm",    LT_HYPER,       '=' },	{"vmm", LT_HYPER, '='},
576	{ NULL,    0, 0 },	{NULL, 0, 0},
577	};	};
578
579	struct keywordTypes siloKeywords[] = {	struct keywordTypes siloKeywords[] = {
580	{ "label",    LT_TITLE,    '=' },	{"label", LT_TITLE, '='},
581	{ "root",    LT_ROOT,    '=' },	{"root", LT_ROOT, '='},
582	{ "default",    LT_DEFAULT,    '=' },	{"default", LT_DEFAULT, '='},
583	{ "image",    LT_KERNEL,    '=' },	{"image", LT_KERNEL, '='},
584	{ "other",    LT_OTHER,    '=' },	{"other", LT_OTHER, '='},
585	{ "initrd",    LT_INITRD,    '=' },	{"initrd", LT_INITRD, '='},
586	{ "append",    LT_KERNELARGS,  '=' },	{"append", LT_KERNELARGS, '='},
587	{ "boot",    LT_BOOT,    '=' },	{"boot", LT_BOOT, '='},
588	{ NULL,    0, 0 },	{NULL, 0, 0},
589	};	};
590
591	struct keywordTypes ziplKeywords[] = {	struct keywordTypes ziplKeywords[] = {
592	{ "target",     LT_BOOTROOT,    '=' },	{"target", LT_BOOTROOT, '='},
593	{ "image",      LT_KERNEL,      '=' },	{"image", LT_KERNEL, '='},
594	{ "ramdisk",    LT_INITRD,      '=' },	{"ramdisk", LT_INITRD, '='},
595	{ "parameters", LT_KERNELARGS,  '=' },	{"parameters", LT_KERNELARGS, '='},
596	{ "default",    LT_DEFAULT,     '=' },	{"default", LT_DEFAULT, '='},
597	{ NULL,         0, 0 },	{NULL, 0, 0},
598	};	};
599
600	struct keywordTypes extlinuxKeywords[] = {	struct keywordTypes extlinuxKeywords[] = {
601	{ "label",    LT_TITLE,    ' ' },	{"label", LT_TITLE, ' '},
602	{ "root",    LT_ROOT,    ' ' },	{"root", LT_ROOT, ' '},
603	{ "default",    LT_DEFAULT,    ' ' },	{"default", LT_DEFAULT, ' '},
604	{ "kernel",    LT_KERNEL,    ' ' },	{"kernel", LT_KERNEL, ' '},
605	{ "initrd",    LT_INITRD,      ' ', ',' },	{"initrd", LT_INITRD, ' ', ','},
606	{ "append",    LT_KERNELARGS,  ' ' },	{"append", LT_KERNELARGS, ' '},
607	{ "prompt",     LT_UNKNOWN,     ' ' },	{"prompt", LT_UNKNOWN, ' '},
608	{ NULL,    0, 0 },	{"fdt", LT_DEVTREE, ' '},
609		{"fdtdir", LT_DEVTREE, ' '},
610		{NULL, 0, 0},
611	};	};
612
613	int useextlinuxmenu;	int useextlinuxmenu;
614	struct configFileInfo eliloConfigType = {	struct configFileInfo eliloConfigType = {
615	.defaultConfig = "/boot/efi/EFI/redhat/elilo.conf",	.defaultConfig = "/boot/efi/EFI/redhat/elilo.conf",
616	.keywords = eliloKeywords,	.keywords = eliloKeywords,
617	.entryStart = LT_KERNEL,	.entryStart = LT_KERNEL,
618	.needsBootPrefix = 1,	.needsBootPrefix = 1,
619	.argsInQuotes = 1,	.argsInQuotes = 1,
620	.mbConcatArgs = 1,	.mbConcatArgs = 1,
621		.titlePosition = 1,
622	};	};
623
624	struct configFileInfo liloConfigType = {	struct configFileInfo liloConfigType = {
625	.defaultConfig = "/etc/lilo.conf",	.defaultConfig = "/etc/lilo.conf",
626	.keywords = liloKeywords,	.keywords = liloKeywords,
627	.entryStart = LT_KERNEL,	.entryStart = LT_KERNEL,
628	.argsInQuotes = 1,	.argsInQuotes = 1,
629	.maxTitleLength = 15,	.maxTitleLength = 15,
630		.titlePosition = 1,
631	};	};
632
633	struct configFileInfo yabootConfigType = {	struct configFileInfo yabootConfigType = {
634	.defaultConfig = "/etc/yaboot.conf",	.defaultConfig = "/etc/yaboot.conf",
635	.keywords = yabootKeywords,	.keywords = yabootKeywords,
636	.entryStart = LT_KERNEL,	.entryStart = LT_KERNEL,
637	.needsBootPrefix = 1,	.needsBootPrefix = 1,
638	.argsInQuotes = 1,	.argsInQuotes = 1,
639	.maxTitleLength = 15,	.maxTitleLength = 15,
640	.mbAllowExtraInitRds = 1,	.mbAllowExtraInitRds = 1,
641		.titlePosition = 1,
642	};	};
643
644	struct configFileInfo siloConfigType = {	struct configFileInfo siloConfigType = {
645	.defaultConfig = "/etc/silo.conf",	.defaultConfig = "/etc/silo.conf",
646	.keywords = siloKeywords,	.keywords = siloKeywords,
647	.entryStart = LT_KERNEL,	.entryStart = LT_KERNEL,
648	.needsBootPrefix = 1,	.needsBootPrefix = 1,
649	.argsInQuotes = 1,	.argsInQuotes = 1,
650	.maxTitleLength = 15,	.maxTitleLength = 15,
651		.titlePosition = 1,
652	};	};
653
654	struct configFileInfo ziplConfigType = {	struct configFileInfo ziplConfigType = {
655	.defaultConfig = "/etc/zipl.conf",	.defaultConfig = "/etc/zipl.conf",
656	.keywords = ziplKeywords,	.keywords = ziplKeywords,
657	.entryStart = LT_TITLE,	.entryStart = LT_TITLE,
658	.argsInQuotes = 1,	.argsInQuotes = 1,
659	.titleBracketed = 1,	.titleBracketed = 1,
660	};	};
661
662	struct configFileInfo extlinuxConfigType = {	struct configFileInfo extlinuxConfigType = {
663	.defaultConfig = "/boot/extlinux/extlinux.conf",	.defaultConfig = "/boot/extlinux/extlinux.conf",
664	.keywords = extlinuxKeywords,	.keywords = extlinuxKeywords,
665	.entryStart = LT_TITLE,	.caseInsensitive = 1,
666	.needsBootPrefix = 1,	.entryStart = LT_TITLE,
667	.maxTitleLength = 255,	.needsBootPrefix = 1,
668	.mbAllowExtraInitRds = 1,	.maxTitleLength = 255,
669		.mbAllowExtraInitRds = 1,
670		.defaultIsUnquoted = 1,
671		.titlePosition = 1,
672	};	};
673
674	struct grubConfig {	struct grubConfig {
675	struct singleLine * theLines;	struct singleLine *theLines;
676	struct singleEntry * entries;	struct singleEntry *entries;
677	char * primaryIndent;	char *primaryIndent;
678	char * secondaryIndent;	char *secondaryIndent;
679	int defaultImage;    /* -1 if none specified -- this value is	int defaultImage; /* -1 if none specified -- this value is
680	* written out, overriding original */	* written out, overriding original */
681	int fallbackImage;    /* just like defaultImage */	int fallbackImage; /* just like defaultImage */
682	int flags;	int flags;
683	struct configFileInfo * cfi;	struct configFileInfo *cfi;
684		int isModified; /* assumes only one entry added
685		per invocation of grubby */
686	};	};
687
688	blkid_cache blkid;	blkid_cache blkid;
689
690	struct singleEntry * findEntryByIndex(struct grubConfig * cfg, int index);	struct singleEntry *findEntryByIndex(struct grubConfig *cfg, int index);
691	struct singleEntry * findEntryByPath(struct grubConfig * cfg,	struct singleEntry *findEntryByPath(struct grubConfig *cfg,
692	const char * path, const char * prefix,	const char *path, const char *prefix,
693	int * index);	int *index);
694	static int readFile(int fd, char ** bufPtr);	struct singleEntry *findEntryByTitle(struct grubConfig *cfg, char *title,
695	static void lineInit(struct singleLine * line);	int *index);
696	struct singleLine * lineDup(struct singleLine * line);	static int readFile(int fd, char **bufPtr);
697	static void lineFree(struct singleLine * line);	static void lineInit(struct singleLine *line);
698	static int lineWrite(FILE * out, struct singleLine * line,	struct singleLine *lineDup(struct singleLine *line);
699	struct configFileInfo * cfi);	static void lineFree(struct singleLine *line);
700	static int getNextLine(char ** bufPtr, struct singleLine * line,	static int lineWrite(FILE * out, struct singleLine *line,
701	struct configFileInfo * cfi);	struct configFileInfo *cfi);
702	static char * getRootSpecifier(char * str);	static int getNextLine(char **bufPtr, struct singleLine *line,
703	static void insertElement(struct singleLine * line,	struct configFileInfo *cfi);
704	const char * item, int insertHere,	static size_t getRootSpecifier(const char *str);
705	struct configFileInfo * cfi);	static void requote(struct singleLine *line, struct configFileInfo *cfi);
706	static void removeElement(struct singleLine * line, int removeHere);	static void insertElement(struct singleLine *line,
707	static struct keywordTypes * getKeywordByType(enum lineType_e type,	const char *item, int insertHere,
708	struct configFileInfo * cfi);	struct configFileInfo *cfi);
709	static enum lineType_e getTypeByKeyword(char * keyword,	static void removeElement(struct singleLine *line, int removeHere);
710	struct configFileInfo * cfi);	static struct keywordTypes *getKeywordByType(enum lineType_e type,
711	static struct singleLine * getLineByType(enum lineType_e type,	struct configFileInfo *cfi);
712	struct singleLine * line);	static enum lineType_e getTypeByKeyword(char *keyword,
713	static int checkForExtLinux(struct grubConfig * config);	struct configFileInfo *cfi);
714	struct singleLine * addLineTmpl(struct singleEntry * entry,	static struct singleLine *getLineByType(enum lineType_e type,
715	struct singleLine * tmplLine,	struct singleLine *line);
716	struct singleLine * prevLine,	static int checkForExtLinux(struct grubConfig *config);
717	const char * val,	struct singleLine *addLineTmpl(struct singleEntry *entry,
718	struct configFileInfo * cfi);	struct singleLine *tmplLine,
719	struct singleLine *  addLine(struct singleEntry * entry,	struct singleLine *prevLine,
720	struct configFileInfo * cfi,	const char *val, struct configFileInfo *cfi);
721	enum lineType_e type, char * defaultIndent,	struct singleLine *addLine(struct singleEntry *entry,
722	const char * val);	struct configFileInfo *cfi,
723		enum lineType_e type, char *defaultIndent,
724		const char *val);
725
726	static char * sdupprintf(const char *format, ...)	static char *sdupprintf(const char *format, ...)
727	#ifdef __GNUC__	#ifdef __GNUC__
728	__attribute__ ((format (printf, 1, 2)));	__attribute__ ((format(printf, 1, 2)));
729	#else	#else
730	;	;
731	#endif	#endif
732
733	static char * sdupprintf(const char *format, ...) {	static char *sdupprintf(const char *format, ...)
734	char *buf = NULL;	{
735	char c;	char *buf = NULL;
736	va_list args;	char c;
737	size_t size = 0;	va_list args;
738	va_start(args, format);	size_t size = 0;
739		va_start(args, format);
740	/* XXX requires C99 vsnprintf behavior */
741	size = vsnprintf(&c, 1, format, args) + 1;	/* XXX requires C99 vsnprintf behavior */
742	if (size == -1) {	size = vsnprintf(&c, 1, format, args) + 1;
743	printf("ERROR: vsnprintf behavior is not C99\n");	if (size == -1) {
744	abort();	printf("ERROR: vsnprintf behavior is not C99\n");
745	}	abort();
746		}
747
748	va_end(args);	va_end(args);
749	va_start(args, format);	va_start(args, format);
750
751	buf = malloc(size);	buf = malloc(size);
752	if (buf == NULL)	if (buf == NULL)
753	return NULL;	return NULL;
754	vsnprintf(buf, size, format, args);	vsnprintf(buf, size, format, args);
755	va_end (args);	va_end(args);
756
757	return buf;	return buf;
758	}	}
759
760	static struct keywordTypes * getKeywordByType(enum lineType_e type,	static inline int
761	struct configFileInfo * cfi) {	kwcmp(struct keywordTypes *kw, const char * label, int case_insensitive)
762	struct keywordTypes * kw;	{
763	for (kw = cfi->keywords; kw->key; kw++) {	int kwl = strlen(kw->key);
764	if (kw->type == type)	int ll = strlen(label);
765	return kw;	int rc;
766		int (*snc)(const char *s1, const char *s2, size_t n) =
767		case_insensitive ? strncasecmp : strncmp;
768		int (*sc)(const char *s1, const char *s2) =
769		case_insensitive ? strcasecmp : strcmp;
770
771		rc = snc(kw->key, label, kwl);
772		if (rc)
773		return rc;
774
775		for (int i = kwl; i < ll; i++) {
776		if (isspace(label[i]))
777		return 0;
778		if (kw->separatorChar && label[i] == kw->separatorChar)
779		return 0;
780		else if (kw->nextChar && label[i] == kw->nextChar)
781		return 0;
782		return sc(kw->key+kwl, label+kwl);
783	}	}
784	return NULL;	return 0;
785	}	}
786
787	static char * getpathbyspec(char *device) {	static enum lineType_e preferredLineType(enum lineType_e type,
788	if (!blkid)	struct configFileInfo *cfi)
789	blkid_get_cache(&blkid, NULL);	{
790		if (isEfi && cfi == &grub2ConfigType) {
791	return blkid_get_devname(blkid, device, NULL);	switch (type) {
792		case LT_KERNEL:
793		return isEfiOnly ? LT_KERNEL : LT_KERNEL_EFI;
794		case LT_INITRD:
795		return isEfiOnly ? LT_INITRD : LT_INITRD_EFI;
796		default:
797		return type;
798		}
799		#if defined(__i386__) || defined(__x86_64__)
800		} else if (cfi == &grub2ConfigType) {
801		switch (type) {
802		case LT_KERNEL:
803		return LT_KERNEL_16;
804		case LT_INITRD:
805		return LT_INITRD_16;
806		default:
807		return type;
808		}
809		#endif
810		}
811		return type;
812	}	}
813
814	static char * getuuidbydev(char *device) {	static struct keywordTypes *getKeywordByType(enum lineType_e type,
815	if (!blkid)	struct configFileInfo *cfi)
816	blkid_get_cache(&blkid, NULL);	{
817		for (struct keywordTypes * kw = cfi->keywords; kw->key; kw++) {
818	return blkid_get_tag_value(blkid, "UUID", device);	if (kw->type == type)
819		return kw;
820		}
821		return NULL;
822	}	}
823
824	static enum lineType_e getTypeByKeyword(char * keyword,	static char *getKeyByType(enum lineType_e type, struct configFileInfo *cfi)
825	struct configFileInfo * cfi) {	{
826	struct keywordTypes * kw;	struct keywordTypes *kt = getKeywordByType(type, cfi);
827	for (kw = cfi->keywords; kw->key; kw++) {	if (kt)
828	if (!strcmp(keyword, kw->key))	return kt->key;
829	return kw->type;	return "unknown";
	}
	return LT_UNKNOWN;
830	}	}
831
832	static struct singleLine * getLineByType(enum lineType_e type,	static char *getpathbyspec(char *device)
833	struct singleLine * line) {	{
834	dbgPrintf("getLineByType(%d): ", type);	if (!blkid)
835	for (; line; line = line->next) {	blkid_get_cache(&blkid, NULL);
836	dbgPrintf("%d:%s ", line->type,
837	line->numElements ? line->elements[0].item : "(empty)");	return blkid_get_devname(blkid, device, NULL);
	if (line->type & type) break;
	}
	dbgPrintf(line ? "\n" : " (failed)\n");
	return line;
838	}	}
839
840	static int isBracketedTitle(struct singleLine * line) {	static char *getuuidbydev(char *device)
841	if (line->numElements == 1 && *line->elements[0].item == '[') {	{
842	int len = strlen(line->elements[0].item);	if (!blkid)
843	if (*(line->elements[0].item + len - 1) == ']') {	blkid_get_cache(&blkid, NULL);
844	/* FIXME: this is a hack... */
845	if (strcmp(line->elements[0].item, "[defaultboot]")) {	return blkid_get_tag_value(blkid, "UUID", device);
	return 1;
	}
	}
	}
	return 0;
846	}	}
847
848	static int isEntryStart(struct singleLine * line,	static enum lineType_e getTypeByKeyword(char *keyword,
849	struct configFileInfo * cfi) {	struct configFileInfo *cfi)
850	return line->type == cfi->entryStart || line->type == LT_OTHER ||	{
851	(cfi->titleBracketed && isBracketedTitle(line));	for (struct keywordTypes * kw = cfi->keywords; kw->key; kw++) {
852		if (!kwcmp(kw, keyword, cfi->caseInsensitive))
853		return kw->type;
854		}
855		return LT_UNKNOWN;
856	}	}
857
858	/* extract the title from within brackets (for zipl) */	static struct singleLine *getLineByType(enum lineType_e type,
859	static char * extractTitle(struct singleLine * line) {	struct singleLine *line)
860	/* bracketed title... let's extract it (leaks a byte) */	{
861	char * title;	dbgPrintf("getLineByType(%d): ", type);
862	title = strdup(line->elements[0].item);	for (; line; line = line->next) {
863	title++;	dbgPrintf("%d:%s ", line->type,
864	*(title + strlen(title) - 1) = '\0';	line->numElements ? line->elements[0].
865	return title;	item : "(empty)");
866	}	if (line->type & type)
867		break;
868	static int readFile(int fd, char ** bufPtr) {	}
869	int alloced = 0, size = 0, i = 0;	dbgPrintf(line ? "\n" : " (failed)\n");
870	char * buf = NULL;	return line;
871		}
	do {
	size += i;
	if ((size + 1024) > alloced) {
	alloced += 4096;
	buf = realloc(buf, alloced + 1);
	}
	} while ((i = read(fd, buf + size, 1024)) > 0);
	if (i < 0) {
	fprintf(stderr, _("error reading input: %s\n"), strerror(errno));
	free(buf);
	return 1;
	}
872
873	buf = realloc(buf, size + 2);	static int isBracketedTitle(struct singleLine *line)
874	if (size == 0)	{
875	buf[size++] = '\n';	if (line->numElements == 1 && *line->elements[0].item == '[') {
876	else	int len = strlen(line->elements[0].item);
877	if (buf[size - 1] != '\n')	if (*(line->elements[0].item + len - 1) == ']') {
878	buf[size++] = '\n';	/* FIXME: this is a hack... */
879	buf[size] = '\0';	if (strcmp(line->elements[0].item, "[defaultboot]")) {
880		return 1;
881		}
882		}
883		}
884		return 0;
885		}
886
887	*bufPtr = buf;	static int isEntryStart(struct singleLine *line, struct configFileInfo *cfi)
888		{
889		return line->type == cfi->entryStart || line->type == LT_OTHER ||
890		(cfi->titleBracketed && isBracketedTitle(line));
891		}
892
893	return 0;	/* extract the title from within brackets (for zipl) */
894		static char *extractTitle(struct grubConfig *cfg, struct singleLine *line)
895		{
896		/* bracketed title... let's extract it */
897		char *title = NULL;
898		if (line->type == LT_TITLE) {
899		char *tmp = line->elements[cfg->cfi->titlePosition].item;
900		if (cfg->cfi->titleBracketed) {
901		tmp++;
902		title = strdup(tmp);
903		*(title + strlen(title) - 1) = '\0';
904		} else {
905		title = strdup(tmp);
906		}
907		} else if (line->type == LT_MENUENTRY)
908		title = strdup(line->elements[1].item);
909		else
910		return NULL;
911		return title;
912	}	}
913
914	static void lineInit(struct singleLine * line) {	static int readFile(int fd, char **bufPtr)
915	line->indent = NULL;	{
916	line->elements = NULL;	int alloced = 0, size = 0, i = 0;
917	line->numElements = 0;	char *buf = NULL;
	line->next = NULL;
	}
	struct singleLine * lineDup(struct singleLine * line) {
	int i;
	struct singleLine * newLine = malloc(sizeof(*newLine));
	newLine->indent = strdup(line->indent);
	newLine->next = NULL;
	newLine->type = line->type;
	newLine->numElements = line->numElements;
	newLine->elements = malloc(sizeof(*newLine->elements) *
	newLine->numElements);
	for (i = 0; i < newLine->numElements; i++) {
	newLine->elements[i].indent = strdup(line->elements[i].indent);
	newLine->elements[i].item = strdup(line->elements[i].item);
	}
918
919	return newLine;	do {
920	}	size += i;
921		if ((size + 1024) > alloced) {
922		alloced += 4096;
923		buf = realloc(buf, alloced + 1);
924		}
925		} while ((i = read(fd, buf + size, 1024)) > 0);
926
927	static void lineFree(struct singleLine * line) {	if (i < 0) {
928	int i;	fprintf(stderr, _("error reading input: %s\n"),
929		strerror(errno));
930		free(buf);
931		return 1;
932		}
933
934	if (line->indent) free(line->indent);	buf = realloc(buf, size + 2);
935		if (size == 0)
936		buf[size++] = '\n';
937		else if (buf[size - 1] != '\n')
938		buf[size++] = '\n';
939		buf[size] = '\0';
940
941	for (i = 0; i < line->numElements; i++) {	*bufPtr = buf;
	free(line->elements[i].item);
	free(line->elements[i].indent);
	}
942
943	if (line->elements) free(line->elements);	return 0;
944	lineInit(line);	}
945
946		static void lineInit(struct singleLine *line)
947		{
948		line->type = LT_UNIDENTIFIED;
949		line->indent = NULL;
950		line->elements = NULL;
951		line->numElements = 0;
952		line->next = NULL;
953	}	}
954
955	static int lineWrite(FILE * out, struct singleLine * line,	struct singleLine *lineDup(struct singleLine *line)
956	struct configFileInfo * cfi) {	{
957	int i;	struct singleLine *newLine = malloc(sizeof(*newLine));
958
959	if (fprintf(out, "%s", line->indent) == -1) return -1;	newLine->indent = strdup(line->indent);
960		newLine->next = NULL;
961		newLine->type = line->type;
962		newLine->numElements = line->numElements;
963		newLine->elements = malloc(sizeof(*newLine->elements) *
964		newLine->numElements);
965
966	for (i = 0; i < line->numElements; i++) {	for (int i = 0; i < newLine->numElements; i++) {
967	if (i == 1 && line->type == LT_KERNELARGS && cfi->argsInQuotes)	newLine->elements[i].indent = strdup(line->elements[i].indent);
968	if (fputc('"', out) == EOF) return -1;	newLine->elements[i].item = strdup(line->elements[i].item);
969		}
970
971	if (fprintf(out, "%s", line->elements[i].item) == -1) return -1;	return newLine;
972	if (i < line->numElements - 1)	}
	if (fprintf(out, "%s", line->elements[i].indent) == -1) return -1;
	}
973
974	if (line->type == LT_KERNELARGS && cfi->argsInQuotes)	static void lineFree(struct singleLine *line)
975	if (fputc('"', out) == EOF) return -1;	{
976		if (line->indent)
977		free(line->indent);
978
979	if (fprintf(out, "\n") == -1) return -1;	for (int i = 0; i < line->numElements; i++) {
980		free(line->elements[i].item);
981		free(line->elements[i].indent);
982		}
983
984	return 0;	if (line->elements)
985		free(line->elements);
986		lineInit(line);
987	}	}
988
989	/* we've guaranteed that the buffer ends w/ \n\0 */	static int lineWrite(FILE * out, struct singleLine *line,
990	static int getNextLine(char ** bufPtr, struct singleLine * line,	struct configFileInfo *cfi)
991	struct configFileInfo * cfi) {	{
992	char * end;	if (fprintf(out, "%s", line->indent) == -1)
993	char * start = *bufPtr;	return -1;
	char * chptr;
	int elementsAlloced = 0;
	struct lineElement * element;
	int first = 1;
994
995	lineFree(line);	for (int i = 0; i < line->numElements; i++) {
996		/* Need to handle this, because we strip the quotes from
997		* menuentry when read it. */
998		if (line->type == LT_MENUENTRY && i == 1) {
999		if (!isquote(*line->elements[i].item)) {
1000		int substring = 0;
1001		/* If the line contains nested quotes, we did
1002		* not strip the "interna" quotes and we must
1003		* use the right quotes again when writing
1004		* the updated file. */
1005		for (int j = i; j < line->numElements; j++) {
1006		if (strchr(line->elements[i].item, '\'')
1007		!= NULL) {
1008		substring = 1;
1009		fprintf(out, "\"%s\"",
1010		line->elements[i].item);
1011		break;
1012		}
1013		}
1014		if (!substring)
1015		fprintf(out, "\'%s\'",
1016		line->elements[i].item);
1017		} else {
1018		fprintf(out, "%s", line->elements[i].item);
1019		}
1020		fprintf(out, "%s", line->elements[i].indent);
1021
1022	end = strchr(start, '\n');	continue;
1023	*end = '\0';	}
	*bufPtr = end + 1;
1024
1025	for (chptr = start; *chptr && isspace(*chptr); chptr++) ;	if (i == 1 && line->type == LT_KERNELARGS && cfi->argsInQuotes)
1026		if (fputc('"', out) == EOF)
1027		return -1;
1028
1029		if (fprintf(out, "%s", line->elements[i].item) == -1)
1030		return -1;
1031		if (i < line->numElements - 1 || line->type == LT_SET_VARIABLE)
1032		if (fprintf(out, "%s", line->elements[i].indent) == -1)
1033		return -1;
1034		}
1035
1036		if (line->type == LT_KERNELARGS && cfi->argsInQuotes)
1037		if (fputc('"', out) == EOF)
1038		return -1;
1039
1040	line->indent = strndup(start, chptr - start);	if (fprintf(out, "\n") == -1)
1041	start = chptr;	return -1;
1042
1043	while (start < end) {	return 0;
1044	/* we know !isspace(*start) */	}
1045
1046	if (elementsAlloced == line->numElements) {	/* we've guaranteed that the buffer ends w/ \n\0 */
1047	elementsAlloced += 5;	static int getNextLine(char **bufPtr, struct singleLine *line,
1048	line->elements = realloc(line->elements,	struct configFileInfo *cfi)
1049	sizeof(*line->elements) * elementsAlloced);	{
1050	}	char *end;
1051		char *start = *bufPtr;
1052		char *chptr;
1053		int elementsAlloced = 0;
1054		struct lineElement *element;
1055		int first = 1;
1056
1057	element = line->elements + line->numElements;	lineFree(line);
1058
1059	chptr = start;	end = strchr(start, '\n');
1060	while (*chptr && !isspace(*chptr)) {	*end = '\0';
1061	if (first && *chptr == '=') break;	*bufPtr = end + 1;
	chptr++;
	}
	element->item = strndup(start, chptr - start);
	start = chptr;
1062
1063	/* lilo actually accepts the pathological case of append = " foo " */	for (chptr = start; *chptr && isspace(*chptr); chptr++) ;
	if (*start == '=')
	chptr = start + 1;
	else
	chptr = start;
	do {
	for (; *chptr && isspace(*chptr); chptr++);
	if (*chptr == '=')
	chptr = chptr + 1;
	} while (isspace(*chptr));
1064
1065	element->indent = strndup(start, chptr - start);	line->indent = strndup(start, chptr - start);
1066	start = chptr;	start = chptr;
1067
1068	line->numElements++;	while (start < end) {
1069	first = 0;	/* we know !isspace(*start) */
	}
1070
1071	if (!line->numElements)	if (elementsAlloced == line->numElements) {
1072	line->type = LT_WHITESPACE;	elementsAlloced += 5;
1073	else {	line->elements = realloc(line->elements,
1074	line->type = getTypeByKeyword(line->elements[0].item, cfi);	sizeof(*line->elements) *
1075	if (line->type == LT_UNKNOWN) {	elementsAlloced);
1076	/* zipl does [title] instead of something reasonable like all	}
	* the other boot loaders.  kind of ugly */
	if (cfi->titleBracketed && isBracketedTitle(line)) {
	line->type = LT_TITLE;
	}
	/* this is awkward, but we need to be able to handle keywords
	that begin with a # (specifically for #boot in grub.conf),
	but still make comments lines with no elements (everything
	stored in the indent */
	if (*line->elements[0].item == '#') {
	char * fullLine;
	int len;
	int i;
	len = strlen(line->indent);
	for (i = 0; i < line->numElements; i++)
	len += strlen(line->elements[i].item) +
	strlen(line->elements[i].indent);
1077
1078	fullLine = malloc(len + 1);	element = line->elements + line->numElements;
	strcpy(fullLine, line->indent);
	free(line->indent);
	line->indent = fullLine;
1079
1080	for (i = 0; i < line->numElements; i++) {	chptr = start;
1081	strcat(fullLine, line->elements[i].item);	while (*chptr && !isspace(*chptr)) {
1082	strcat(fullLine, line->elements[i].indent);	if (first && *chptr == '=')
1083	free(line->elements[i].item);	break;
1084	free(line->elements[i].indent);	chptr++;
1085	}	}
1086		if (line->type == LT_UNIDENTIFIED)
1087		line->type = getTypeByKeyword(start, cfi);
1088		element->item = strndup(start, chptr - start);
1089		start = chptr;
1090
1091		/* lilo actually accepts the pathological case of
1092		* append = " foo " */
1093		if (*start == '=')
1094		chptr = start + 1;
1095		else
1096		chptr = start;
1097
1098		do {
1099		for (; *chptr && isspace(*chptr); chptr++) ;
1100		if (*chptr == '=')
1101		chptr = chptr + 1;
1102		} while (isspace(*chptr));
1103
1104	line->type = LT_WHITESPACE;	element->indent = strndup(start, chptr - start);
1105	line->numElements = 0;	start = chptr;
	}
	} else {
	struct keywordTypes *kw;
1106
1107	kw = getKeywordByType(line->type, cfi);	line->numElements++;
1108		first = 0;
1109		}
1110
1111	/* space isn't the only separator, we need to split	if (!line->numElements)
1112	* elements up more	line->type = LT_WHITESPACE;
1113	*/	else {
1114	if (!isspace(kw->separatorChar)) {	line->type = getTypeByKeyword(line->elements[0].item, cfi);
1115	int i;	if (line->type == LT_UNKNOWN) {
1116	char indent[2] = "";	/* zipl does [title] instead of something reasonable
1117	indent[0] = kw->separatorChar;	* like all the other boot loaders.  kind of ugly */
1118	for (i = 1; i < line->numElements; i++) {	if (cfi->titleBracketed && isBracketedTitle(line)) {
1119	char *p;	line->type = LT_TITLE;
	int j;
	int numNewElements;
	numNewElements = 0;
	p = line->elements[i].item;
	while (*p != '\0') {
	if (*p == kw->separatorChar)
	numNewElements++;
	p++;
	}
	if (line->numElements + numNewElements >= elementsAlloced) {
	elementsAlloced += numNewElements + 5;
	line->elements = realloc(line->elements,
	sizeof(*line->elements) * elementsAlloced);
	}
	for (j = line->numElements; j > i; j--) {
	line->elements[j + numNewElements] = line->elements[j];
1120	}	}
	line->numElements += numNewElements;
1121
1122	p = line->elements[i].item;	/* this is awkward, but we need to be able to handle
1123	while (*p != '\0') {	* keywords that begin with a # (specifically for
1124		* #boot in grub.conf), but still make comments lines
1125	while (*p != kw->separatorChar && *p != '\0') p++;	* with no elements (everything stored in the indent
1126	if (*p == '\0') {	*/
1127	break;	if (*line->elements[0].item == '#') {
1128		char *fullLine;
1129		int len;
1130
1131		len = strlen(line->indent);
1132		for (int i = 0; i < line->numElements; i++)
1133		len += strlen(line->elements[i].item) +
1134		strlen(line->elements[i].indent);
1135
1136		fullLine = malloc(len + 1);
1137		strcpy(fullLine, line->indent);
1138		free(line->indent);
1139		line->indent = fullLine;
1140
1141		for (int i = 0; i < line->numElements; i++) {
1142		strcat(fullLine,
1143		line->elements[i].item);
1144		strcat(fullLine,
1145		line->elements[i].indent);
1146		free(line->elements[i].item);
1147		free(line->elements[i].indent);
1148	}	}
1149
1150	free(line->elements[i].indent);	line->type = LT_WHITESPACE;
1151	line->elements[i].indent = strdup(indent);	line->numElements = 0;
	*p++ = '\0';
	i++;
	line->elements[i].item = strdup(p);
	line->elements[i].indent = strdup("");
	p = line->elements[i].item;
1152	}	}
1153	}	} else if (line->type == LT_INITRD) {
1154	}	struct keywordTypes *kw;
	}
	}
1155
1156	return 0;	kw = getKeywordByType(line->type, cfi);
	}
1157
1158	static struct grubConfig * readConfig(const char * inName,	/* space isn't the only separator, we need to split
1159	struct configFileInfo * cfi) {	* elements up more
1160	int in;	*/
1161	char * incoming = NULL, * head;	if (!isspace(kw->separatorChar)) {
1162	int rc;	char indent[2] = "";
1163	int sawEntry = 0;	indent[0] = kw->separatorChar;
1164	int movedLine = 0;	for (int i = 1; i < line->numElements; i++) {
1165	struct grubConfig * cfg;	char *p;
1166	struct singleLine * last = NULL, * line, * defaultLine = NULL;	int numNewElements;
1167	char * end;
1168	struct singleEntry * entry = NULL;	numNewElements = 0;
1169	int i, len;	p = line->elements[i].item;
1170	char * buf;	while (*p != '\0') {
1171		if (*p == kw->separatorChar)
1172	if (!strcmp(inName, "-")) {	numNewElements++;
1173	in = 0;	p++;
1174	} else {	}
1175	if ((in = open(inName, O_RDONLY)) < 0) {	if (line->numElements +
1176	fprintf(stderr, _("error opening %s for read: %s\n"),	numNewElements >= elementsAlloced) {
1177	inName, strerror(errno));	elementsAlloced +=
1178	return NULL;	numNewElements + 5;
1179	}	line->elements =
1180	}	realloc(line->elements,
1181		sizeof(*line->
1182		elements) *
1183		elementsAlloced);
1184		}
1185
1186	rc = readFile(in, &incoming);	for (int j = line->numElements; j > i;
1187	close(in);	j--) {
1188	if (rc) return NULL;	line->elements[j +
1189		numNewElements] =
1190	head = incoming;	line->elements[j];
1191	cfg = malloc(sizeof(*cfg));	}
1192	cfg->primaryIndent = strdup("");	line->numElements += numNewElements;
	cfg->secondaryIndent = strdup("\t");
	cfg->flags = GRUB_CONFIG_NO_DEFAULT;
	cfg->cfi = cfi;
	cfg->theLines = NULL;
	cfg->entries = NULL;
	cfg->fallbackImage = 0;
	/* copy everything we have */
	while (*head) {
	line = malloc(sizeof(*line));
	lineInit(line);
1193
1194	if (getNextLine(&head, line, cfi)) {	p = line->elements[i].item;
1195	free(line);	while (*p != '\0') {
	/* XXX memory leak of everything in cfg */
	return NULL;
	}
	if (!sawEntry && line->numElements) {
	free(cfg->primaryIndent);
	cfg->primaryIndent = strdup(line->indent);
	} else if (line->numElements) {
	free(cfg->secondaryIndent);
	cfg->secondaryIndent = strdup(line->indent);
	}
	if (isEntryStart(line, cfi)) {
	sawEntry = 1;
	if (!entry) {
	cfg->entries = malloc(sizeof(*entry));
	entry = cfg->entries;
	} else {
	entry->next = malloc(sizeof(*entry));
	entry = entry->next;
	}
1196
1197	entry->skip = 0;	while (*p != kw->separatorChar
1198	entry->multiboot = 0;	&& *p != '\0')
1199	entry->lines = NULL;	p++;
1200	entry->next = NULL;	if (*p == '\0') {
1201	}	break;
1202		}
1203	if (line->type == LT_DEFAULT && line->numElements == 2) {
1204	cfg->flags &= ~GRUB_CONFIG_NO_DEFAULT;	line->elements[i + 1].indent =
1205	defaultLine = line;	line->elements[i].indent;
1206		line->elements[i].indent =
1207	} else if (line->type == LT_KERNEL) {	strdup(indent);
1208	/* if by some freak chance this is multiboot and the "module"	*p++ = '\0';
1209	* lines came earlier in the template, make sure to use LT_HYPER	i++;
1210	* instead of LT_KERNEL now	line->elements[i].item =
1211	*/	strdup(p);
1212	if (entry->multiboot)	}
1213	line->type = LT_HYPER;	}
1214		}
1215	} else if (line->type == LT_MBMODULE) {	} else if (line->type == LT_SET_VARIABLE) {
1216	/* go back and fix the LT_KERNEL line to indicate LT_HYPER	/* and if it's a "set blah=" we need to split it
1217	* instead, now that we know this is a multiboot entry.	* yet a third way to avoid rhbz# XXX FIXME :/
1218	* This only applies to grub, but that's the only place we	*/
1219	* should find LT_MBMODULE lines anyway.	char *eq;
1220	*/	int l;
1221	struct singleLine * l;	int numElements = line->numElements;
1222	for (l = entry->lines; l; l = l->next) {	struct lineElement *newElements;
1223	if (l->type == LT_HYPER)	eq = strchr(line->elements[1].item, '=');
1224	break;	if (!eq)
1225	else if (l->type == LT_KERNEL) {	return 0;
1226	l->type = LT_HYPER;	l = eq - line->elements[1].item;
1227	break;	if (eq[1] != 0)
1228	}	numElements++;
1229	}	newElements = calloc(numElements,sizeof (*newElements));
1230	entry->multiboot = 1;	memcpy(&newElements[0], &line->elements[0],
1231		sizeof (newElements[0]));
1232	} else if (line->type == LT_HYPER) {	newElements[1].item =
1233	entry->multiboot = 1;	strndup(line->elements[1].item, l);
1234		newElements[1].indent = "=";
1235	} else if (line->type == LT_FALLBACK && line->numElements == 2) {	*(eq++) = '\0';
1236	cfg->fallbackImage = strtol(line->elements[1].item, &end, 10);	newElements[2].item = strdup(eq);
1237	if (*end) cfg->fallbackImage = -1;	free(line->elements[1].item);
1238		if (line->elements[1].indent)
1239	} else if (line->type == LT_TITLE && line->numElements > 1) {	newElements[2].indent = line->elements[1].indent;
1240	/* make the title a single argument (undoing our parsing) */	for (int i = 2; i < line->numElements; i++) {
1241	len = 0;	newElements[i+1].item = line->elements[i].item;
1242	for (i = 1; i < line->numElements; i++) {	newElements[i+1].indent =
1243	len += strlen(line->elements[i].item);	line->elements[i].indent;
1244	len += strlen(line->elements[i].indent);	}
1245	}	free(line->elements);
1246	buf = malloc(len + 1);	line->elements = newElements;
1247	*buf = '\0';	line->numElements = numElements;
1248		}
1249		}
1250
1251	for (i = 1; i < line->numElements; i++) {	return 0;
1252	strcat(buf, line->elements[i].item);	}
	free(line->elements[i].item);
1253
1254	if ((i + 1) != line->numElements) {	static int isnumber(const char *s)
1255	strcat(buf, line->elements[i].indent);	{
1256	free(line->elements[i].indent);	int i;
1257	}	for (i = 0; s[i] != '\0'; i++)
1258	}	if (s[i] < '0' || s[i] > '9')
1259		return 0;
1260	line->elements[1].indent =	return i;
1261	line->elements[line->numElements - 1].indent;	}
	line->elements[1].item = buf;
	line->numElements = 2;
	} else if (line->type == LT_KERNELARGS && cfi->argsInQuotes) {
	/* Strip off any " which may be present; they'll be put back
	on write. This is one of the few (the only?) places that grubby
	canonicalizes the output */
	if (line->numElements >= 2) {
	int last, len;
	if (*line->elements[1].item == '"')
	memmove(line->elements[1].item, line->elements[1].item + 1,
	strlen(line->elements[1].item + 1) + 1);
	last = line->numElements - 1;
	len = strlen(line->elements[last].item) - 1;
	if (line->elements[last].item[len] == '"')
	line->elements[last].item[len] = '\0';
	}
	}
	/* If we find a generic config option which should live at the
	top of the file, move it there. Old versions of grubby were
	probably responsible for putting new images in the wrong
	place in front of it anyway. */
	if (sawEntry && line->type == LT_GENERIC) {
	struct singleLine **l = &cfg->theLines;
	struct singleLine **last_nonws = &cfg->theLines;
	while (*l) {
	if ((*l)->type != LT_WHITESPACE)
	last_nonws = &((*l)->next);
	l = &((*l)->next);
	}
	line->next = *last_nonws;
	*last_nonws = line;
	movedLine = 1;
	continue; /* without setting 'last' */
	}
	/* If a second line of whitespace happens after a generic option
	which was moved, drop it. */
	if (movedLine && line->type == LT_WHITESPACE && last->type == LT_WHITESPACE) {
	lineFree(line);
	free(line);
	movedLine = 0;
	continue;
	}
	movedLine = 0;
1262
1263	if (sawEntry) {	static struct grubConfig *readConfig(const char *inName,
1264	if (!entry->lines)	struct configFileInfo *cfi)
1265	entry->lines = line;	{
1266	else	int in;
1267	last->next = line;	char *incoming = NULL, *head;
1268	dbgPrintf("readConfig added %d to %p\n", line->type, entry);	int rc;
1269		int sawEntry = 0;
1270		int movedLine = 0;
1271		struct grubConfig *cfg;
1272		struct singleLine *last = NULL, *line, *defaultLine = NULL;
1273		char *end;
1274		struct singleEntry *entry = NULL;
1275		int len;
1276		char *buf;
1277
1278		if (inName == NULL) {
1279		printf("Could not find bootloader configuration\n");
1280		exit(1);
1281		} else if (!strcmp(inName, "-")) {
1282		in = 0;
1283	} else {	} else {
1284	if (!cfg->theLines)	if ((in = open(inName, O_RDONLY)) < 0) {
1285	cfg->theLines = line;	fprintf(stderr, _("error opening %s for read: %s\n"),
1286	else	inName, strerror(errno));
1287	last->next = line;	return NULL;
1288	dbgPrintf("readConfig added %d to cfg\n", line->type);	}
1289	}	}
1290
1291	last = line;	rc = readFile(in, &incoming);
1292	}	close(in);
1293		if (rc)
1294		return NULL;
1295
1296		head = incoming;
1297		cfg = malloc(sizeof(*cfg));
1298		cfg->primaryIndent = strdup("");
1299		cfg->secondaryIndent = strdup("\t");
1300		cfg->flags = GRUB_CONFIG_NO_DEFAULT;
1301		cfg->cfi = cfi;
1302		cfg->theLines = NULL;
1303		cfg->entries = NULL;
1304		cfg->fallbackImage = 0;
1305		cfg->isModified = 0;
1306
1307		/* copy everything we have */
1308		while (*head) {
1309		line = malloc(sizeof(*line));
1310		lineInit(line);
1311
1312		if (getNextLine(&head, line, cfi)) {
1313		free(line);
1314		/* XXX memory leak of everything in cfg */
1315		return NULL;
1316		}
1317
1318	free(incoming);	if (!sawEntry && line->numElements) {
1319		free(cfg->primaryIndent);
1320		cfg->primaryIndent = strdup(line->indent);
1321		} else if (line->numElements) {
1322		free(cfg->secondaryIndent);
1323		cfg->secondaryIndent = strdup(line->indent);
1324		}
1325
1326	if (defaultLine) {	if (isEntryStart(line, cfi) || (cfg->entries && !sawEntry)) {
1327	if (cfi->defaultSupportSaved &&	sawEntry = 1;
1328	!strncmp(defaultLine->elements[1].item, "saved", 5)) {	if (!entry) {
1329	cfg->defaultImage = DEFAULT_SAVED;	cfg->entries = malloc(sizeof(*entry));
1330	} else if (cfi->defaultIsIndex) {	entry = cfg->entries;
1331	cfg->defaultImage = strtol(defaultLine->elements[1].item, &end, 10);	} else {
1332	if (*end) cfg->defaultImage = -1;	entry->next = malloc(sizeof(*entry));
1333	} else if (defaultLine->numElements >= 2) {	entry = entry->next;
1334	i = 0;	}
	while ((entry = findEntryByIndex(cfg, i))) {
	for (line = entry->lines; line; line = line->next)
	if (line->type == LT_TITLE) break;
	if (!cfi->titleBracketed) {
	if (line && (line->numElements >= 2) &&
	!strcmp(defaultLine->elements[1].item,
	line->elements[1].item)) break;
	} else if (line) {
	if (!strcmp(defaultLine->elements[1].item,
	extractTitle(line))) break;
	}
	i++;
	entry = NULL;
	}
1335
1336	if (entry){	entry->skip = 0;
1337	cfg->defaultImage = i;	entry->multiboot = 0;
1338	}else{	entry->lines = NULL;
1339	cfg->defaultImage = -1;	entry->next = NULL;
1340	}	}
	}
	} else {
	cfg->defaultImage = 0;
	}
1341
1342	return cfg;	if (line->type == LT_SET_VARIABLE) {
1343	}	dbgPrintf("found 'set' command (%d elements): ",
1344		line->numElements);
1345		dbgPrintf("%s", line->indent);
1346		for (int i = 0; i < line->numElements; i++)
1347		dbgPrintf("\"%s\"%s", line->elements[i].item,
1348		line->elements[i].indent);
1349		dbgPrintf("\n");
1350		struct keywordTypes *kwType =
1351		getKeywordByType(LT_DEFAULT, cfi);
1352		if (kwType && line->numElements == 3
1353		&& !strcmp(line->elements[1].item, kwType->key)
1354		&& !is_special_grub2_variable(
1355		line->elements[2].item)) {
1356		dbgPrintf("Line sets default config\n");
1357		cfg->flags &= ~GRUB_CONFIG_NO_DEFAULT;
1358		defaultLine = line;
1359		}
1360		} else if (iskernel(line->type)) {
1361		/* if by some freak chance this is multiboot and the
1362		* "module" lines came earlier in the template, make
1363		* sure to use LT_HYPER instead of LT_KERNEL now
1364		*/
1365		if (entry && entry->multiboot)
1366		line->type = LT_HYPER;
1367
1368	static void writeDefault(FILE * out, char * indent,	} else if (line->type == LT_MBMODULE) {
1369	char * separator, struct grubConfig * cfg) {	/* go back and fix the LT_KERNEL line to indicate
1370	struct singleEntry * entry;	* LT_HYPER instead, now that we know this is a
1371	struct singleLine * line;	* multiboot entry.  This only applies to grub, but
1372	int i;	* that's the only place we should find LT_MBMODULE
1373		* lines anyway.
1374		*/
1375		for (struct singleLine * l = entry->lines; l;
1376		l = l->next) {
1377		if (l->type == LT_HYPER)
1378		break;
1379		else if (iskernel(l->type)) {
1380		l->type = LT_HYPER;
1381		break;
1382		}
1383		}
1384		entry->multiboot = 1;
1385
1386	if (!cfg->defaultImage && cfg->flags == GRUB_CONFIG_NO_DEFAULT) return;	} else if (line->type == LT_HYPER) {
1387		entry->multiboot = 1;
1388
1389	if (cfg->defaultImage == DEFAULT_SAVED)	} else if (line->type == LT_FALLBACK && line->numElements == 2) {
1390	fprintf(out, "%sdefault%ssaved\n", indent, separator);	cfg->fallbackImage =
1391	else if (cfg->defaultImage > -1) {	strtol(line->elements[1].item, &end, 10);
1392	if (cfg->cfi->defaultIsIndex) {	if (*end)
1393	fprintf(out, "%sdefault%s%d\n", indent, separator,	cfg->fallbackImage = -1;
1394	cfg->defaultImage);
1395	} else {	} else if ((line->type == LT_DEFAULT && cfi->defaultIsUnquoted)
1396	int image = cfg->defaultImage;	|| (line->type == LT_TITLE
1397		&& line->numElements > 1)) {
1398		/* make the title/default a single argument (undoing
1399		* our parsing) */
1400		len = 0;
1401		for (int i = 1; i < line->numElements; i++) {
1402		len += strlen(line->elements[i].item);
1403		len += strlen(line->elements[i].indent);
1404		}
1405		buf = malloc(len + 1);
1406		*buf = '\0';
1407
1408	entry = cfg->entries;	for (int i = 1; i < line->numElements; i++) {
1409	while (entry && entry->skip) entry = entry->next;	strcat(buf, line->elements[i].item);
1410		free(line->elements[i].item);
1411
1412		if ((i + 1) != line->numElements) {
1413		strcat(buf, line->elements[i].indent);
1414		free(line->elements[i].indent);
1415		}
1416		}
1417
1418	i = 0;	line->elements[1].indent =
1419	while (entry && i < image) {	line->elements[line->numElements - 1].indent;
1420	entry = entry->next;	line->elements[1].item = buf;
1421		line->numElements = 2;
1422		} else if (line->type == LT_MENUENTRY && line->numElements > 3) {
1423		/* let --remove-kernel="TITLE=what" work */
1424		len = 0;
1425		char *extras;
1426		char *title;
1427		/* initially unseen value */
1428		char quote_char = '\0';
1429
1430		for (int i = 1; i < line->numElements; i++) {
1431		len += strlen(line->elements[i].item);
1432		len += strlen(line->elements[i].indent);
1433		}
1434		buf = malloc(len + 1);
1435		*buf = '\0';
1436
1437	while (entry && entry->skip) entry = entry->next;	/* allocate mem for extra flags. */
1438	i++;	extras = malloc(len + 1);
1439	}	*extras = '\0';
1440
1441		/* get title. */
1442		for (int i = 0; i < line->numElements; i++) {
1443		if (!strcmp
1444		(line->elements[i].item, "menuentry"))
1445		continue;
1446		if (isquote(*line->elements[i].item)
1447		&& quote_char == '\0') {
1448		/* ensure we properly pair off quotes */
1449		quote_char = *line->elements[i].item;
1450		title = line->elements[i].item + 1;
1451		} else {
1452		title = line->elements[i].item;
1453		}
1454
1455	if (!entry) return;	len = strlen(title);
1456		if (title[len - 1] == quote_char) {
1457		strncat(buf, title, len - 1);
1458		break;
1459		} else {
1460		strcat(buf, title);
1461		strcat(buf, line->elements[i].indent);
1462		}
1463		}
1464
1465	line = getLineByType(LT_TITLE, entry->lines);	/* get extras */
1466		int count = 0;
1467		quote_char = '\0';
1468		for (int i = 0; i < line->numElements; i++) {
1469		if (count >= 2) {
1470		strcat(extras, line->elements[i].item);
1471		strcat(extras,
1472		line->elements[i].indent);
1473		}
1474
1475	if (line && line->numElements >= 2)	if (!strcmp
1476	fprintf(out, "%sdefault%s%s\n", indent, separator,	(line->elements[i].item, "menuentry"))
1477	line->elements[1].item);	continue;
1478	else if (line && (line->numElements == 1) &&
1479	cfg->cfi->titleBracketed) {	/* count ' or ", there should be two in menuentry line. */
1480	fprintf(out, "%sdefault%s%s\n", indent, separator,	if (isquote(*line->elements[i].item)
1481	extractTitle(line));	&& quote_char == '\0') {
1482	}	/* ensure we properly pair off quotes */
1483	}	quote_char = *line->elements[i].item;
1484	}	count++;
1485	}	}
1486
1487	static int writeConfig(struct grubConfig * cfg, char * outName,	len = strlen(line->elements[i].item);
	const char * prefix) {
	FILE * out;
	struct singleLine * line;
	struct singleEntry * entry;
	char * tmpOutName;
	int needs = MAIN_DEFAULT;
	struct stat sb;
	int i;
	if (!strcmp(outName, "-")) {
	out = stdout;
	tmpOutName = NULL;
	} else {
	if (!lstat(outName, &sb) && S_ISLNK(sb.st_mode)) {
	char * buf;
	int len = 256;
	int rc;
	/* most likely the symlink is relative, so change our
	directory to the dir of the symlink */
	rc = chdir(dirname(strdupa(outName)));
	do {
	buf = alloca(len + 1);
	rc = readlink(basename(outName), buf, len);
	if (rc == len) len += 256;
	} while (rc == len);
	if (rc < 0) {
	fprintf(stderr, _("grubby: error readlink link %s: %s\n"),
	outName, strerror(errno));
	return 1;
	}
	outName = buf;
	outName[rc] = '\0';
	}
	tmpOutName = alloca(strlen(outName) + 2);
	sprintf(tmpOutName, "%s-", outName);
	out = fopen(tmpOutName, "w");
	if (!out) {
	fprintf(stderr, _("grubby: error creating %s: %s\n"), tmpOutName,
	strerror(errno));
	return 1;
	}
	if (!stat(outName, &sb)) {
	if (chmod(tmpOutName, sb.st_mode & ~(S_IFMT))) {
	fprintf(stderr, _("grubby: error setting perms on %s: %s\n"),
	tmpOutName, strerror(errno));
	fclose(out);
	unlink(tmpOutName);
	return 1;
	}
	}
	}
1488
1489	line = cfg->theLines;	if (line->elements[i].item[len - 1] ==
1490	while (line) {	quote_char)
1491	if (line->type == LT_DEFAULT) {	count++;
	writeDefault(out, line->indent, line->elements[0].indent, cfg);
	needs &= ~MAIN_DEFAULT;
	} else if (line->type == LT_FALLBACK) {
	if (cfg->fallbackImage > -1)
	fprintf(out, "%s%s%s%d\n", line->indent,
	line->elements[0].item, line->elements[0].indent,
	cfg->fallbackImage);
	} else {
	if (lineWrite(out, line, cfg->cfi) == -1) {
	fprintf(stderr, _("grubby: error writing %s: %s\n"),
	tmpOutName, strerror(errno));
	fclose(out);
	unlink(tmpOutName);
	return 1;
	}
	}
1492
1493	line = line->next;	/* ok, we get the final ' or ", others are extras. */
1494	}	}
1495		line->elements[1].indent =
1496		line->elements[line->numElements - 2].indent;
1497		line->elements[1].item = buf;
1498		line->elements[2].indent =
1499		line->elements[line->numElements - 2].indent;
1500		line->elements[2].item = extras;
1501		line->numElements = 3;
1502		} else if (line->type == LT_KERNELARGS && cfi->argsInQuotes) {
1503		/* Strip off any " which may be present; they'll be
1504		* put back on write. This is one of the few (the
1505		* only?) places that grubby canonicalizes the output
1506		*/
1507		if (line->numElements >= 2) {
1508		int last, len;
1509
1510	if (needs & MAIN_DEFAULT) {	if (isquote(*line->elements[1].item))
1511	writeDefault(out, cfg->primaryIndent, "=", cfg);	memmove(line->elements[1].item,
1512	needs &= ~MAIN_DEFAULT;	line->elements[1].item + 1,
1513	}	strlen(line->elements[1].item +
1514		1) + 1);
1515	i = 0;
1516	while ((entry = findEntryByIndex(cfg, i++))) {	last = line->numElements - 1;
1517	if (entry->skip) continue;	len = strlen(line->elements[last].item) - 1;
1518		if (isquote(line->elements[last].item[len]))
1519	line = entry->lines;	line->elements[last].item[len] = '\0';
1520	while (line) {	}
1521	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;
	}
	}
1522
1523	if (tmpOutName) {	if (line->type == LT_DEFAULT && line->numElements == 2) {
1524	if (rename(tmpOutName, outName)) {	cfg->flags &= ~GRUB_CONFIG_NO_DEFAULT;
1525	fprintf(stderr, _("grubby: error moving %s to %s: %s\n"),	defaultLine = line;
1526	tmpOutName, outName, strerror(errno));	}
	unlink(outName);
	return 1;
	}
	}
1527
1528	return 0;	/* If we find a generic config option which should live at the
1529	}	top of the file, move it there. Old versions of grubby were
1530		probably responsible for putting new images in the wrong
1531		place in front of it anyway. */
1532		if (sawEntry && line->type == LT_GENERIC) {
1533		struct singleLine **l = &cfg->theLines;
1534		struct singleLine **last_nonws = &cfg->theLines;
1535		while (*l) {
1536		if ((*l)->type != LT_WHITESPACE)
1537		last_nonws = &((*l)->next);
1538		l = &((*l)->next);
1539		}
1540		line->next = *last_nonws;
1541		*last_nonws = line;
1542		movedLine = 1;
1543		continue; /* without setting 'last' */
1544		}
1545
1546	static int numEntries(struct grubConfig *cfg) {	/* If a second line of whitespace happens after a generic
1547	int i = 0;	* option which was moved, drop it. */
1548	struct singleEntry * entry;	if (movedLine && line->type == LT_WHITESPACE
1549		&& last->type == LT_WHITESPACE) {
1550	entry = cfg->entries;	lineFree(line);
1551	while (entry) {	free(line);
1552	if (!entry->skip)	movedLine = 0;
1553	i++;	continue;
1554	entry = entry->next;	}
1555	}	movedLine = 0;
	return i;
	}
1556
1557	static char *findDiskForRoot()	if (sawEntry) {
1558	{	if (!entry->lines)
1559	int fd;	entry->lines = line;
1560	char buf[65536];	else
1561	char *devname;	last->next = line;
1562	char *chptr;	dbgPrintf("readConfig added %s to %p\n",
1563	int rc;	getKeyByType(line->type, cfi), entry);
1564
1565	if ((fd = open(_PATH_MOUNTED, O_RDONLY)) < 0) {	/* we could have seen this outside of an entry... if
1566	fprintf(stderr, "grubby: failed to open %s: %s\n",	* so, we ignore it like any other line we don't grok
1567	_PATH_MOUNTED, strerror(errno));	*/
1568	return NULL;	if (line->type == LT_ENTRY_END && sawEntry)
1569	}	sawEntry = 0;
1570		} else {
1571		if (!cfg->theLines)
1572		cfg->theLines = line;
1573		else
1574		last->next = line;
1575		dbgPrintf("readConfig added %s to cfg\n",
1576		getKeyByType(line->type, cfi));
1577		}
1578
1579	rc = read(fd, buf, sizeof(buf) - 1);	last = line;
1580	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++;
	}
1581
1582	return NULL;	free(incoming);
	}
1583
1584	int suitableImage(struct singleEntry * entry, const char * bootPrefix,	dbgPrintf("defaultLine is %s\n", defaultLine ? "set" : "unset");
1585	int skipRemoved, int flags) {	if (defaultLine) {
1586	struct singleLine * line;	if (defaultLine->numElements > 2 &&
1587	char * fullName;	cfi->defaultSupportSaved &&
1588	int i;	!strncmp(defaultLine->elements[2].item,
1589	char * dev;	"\"${saved_entry}\"", 16)) {
1590	char * rootspec;	cfg->cfi->defaultIsSaved = 1;
1591	char * rootdev;	cfg->defaultImage = DEFAULT_SAVED_GRUB2;
1592		if (cfg->cfi->getEnv) {
1593	if (skipRemoved && entry->skip) return 0;	char *defTitle =
1594		cfi->getEnv(cfg->cfi, "saved_entry");
1595	line = getLineByType(LT_KERNEL|LT_HYPER, entry->lines);	if (defTitle) {
1596	if (!line || line->numElements < 2) return 0;	int index = 0;
1597		if (isnumber(defTitle)) {
1598	if (flags & GRUBBY_BADIMAGE_OKAY) return 1;	index = atoi(defTitle);
1599		entry =
1600	fullName = alloca(strlen(bootPrefix) +	findEntryByIndex(cfg,
1601	strlen(line->elements[1].item) + 1);	index);
1602	rootspec = getRootSpecifier(line->elements[1].item);	} else {
1603	sprintf(fullName, "%s%s", bootPrefix,	entry =
1604	line->elements[1].item + (rootspec ? strlen(rootspec) : 0));	findEntryByTitle(cfg,
1605	if (access(fullName, R_OK)) return 0;	defTitle,
1606		&index);
1607	for (i = 2; i < line->numElements; i++)	}
1608	if (!strncasecmp(line->elements[i].item, "root=", 5)) break;	if (entry)
1609	if (i < line->numElements) {	cfg->defaultImage = index;
1610	dev = line->elements[i].item + 5;	}
1611	} else {	}
1612	/* look for a lilo style LT_ROOT line */	} else if (cfi->defaultIsVariable) {
1613	line = getLineByType(LT_ROOT, entry->lines);	if (defaultLine->numElements == 2) {
1614		char *value = defaultLine->elements[1].item + 8;
1615		while (*value && (*value == '"' ||
1616		*value == '\'' ||
1617		*value == ' ' ||
1618		*value == '\t'))
1619		value++;
1620		cfg->defaultImage = strtol(value, &end, 10);
1621		while (*end && (*end == '"' || *end == '\'' ||
1622		*end == ' ' || *end == '\t'))
1623		end++;
1624		if (*end)
1625		cfg->defaultImage = NO_DEFAULT_ENTRY;
1626		} else if (defaultLine->numElements == 3) {
1627		char *value = defaultLine->elements[2].item;
1628		while (*value && (*value == '"' ||
1629		*value == '\'' ||
1630		*value == ' ' ||
1631		*value == '\t'))
1632		value++;
1633		cfg->defaultImage = strtol(value, &end, 10);
1634		while (*end && (*end == '"' || *end == '\'' ||
1635		*end == ' ' || *end == '\t'))
1636		end++;
1637		if (*end)
1638		cfg->defaultImage = NO_DEFAULT_ENTRY;
1639		}
1640		} else if (cfi->defaultSupportSaved &&
1641		!strncmp(defaultLine->elements[1].item, "saved",
1642		5)) {
1643		cfg->defaultImage = DEFAULT_SAVED;
1644		} else if (cfi->defaultIsIndex) {
1645		cfg->defaultImage =
1646		strtol(defaultLine->elements[1].item, &end, 10);
1647		if (*end)
1648		cfg->defaultImage = NO_DEFAULT_ENTRY;
1649		} else if (defaultLine->numElements >= 2) {
1650		int i = 0;
1651		while ((entry = findEntryByIndex(cfg, i))) {
1652		for (line = entry->lines; line;
1653		line = line->next)
1654		if (line->type == LT_TITLE)
1655		break;
1656
1657		if (!cfi->titleBracketed) {
1658		if (line && (line->numElements >= 2) &&
1659		!strcmp(defaultLine->elements[1].
1660		item,
1661		line->elements[1].item))
1662		break;
1663		} else if (line) {
1664		if (!strcmp
1665		(defaultLine->elements[1].item,
1666		extractTitle(cfg, line)))
1667		break;
1668		}
1669		i++;
1670		entry = NULL;
1671		}
1672
1673	if (line && line->numElements >= 2) {	if (entry) {
1674	dev = line->elements[1].item;	cfg->defaultImage = i;
1675		} else {
1676		cfg->defaultImage = NO_DEFAULT_ENTRY;
1677		}
1678		}
1679		} else if (cfg->cfi->defaultIsSaved && cfg->cfi->getEnv) {
1680		char *defTitle = cfi->getEnv(cfg->cfi, "saved_entry");
1681		if (defTitle) {
1682		int index = 0;
1683		if (isnumber(defTitle)) {
1684		index = atoi(defTitle);
1685		entry = findEntryByIndex(cfg, index);
1686		} else {
1687		entry = findEntryByTitle(cfg, defTitle, &index);
1688		}
1689		if (entry)
1690		cfg->defaultImage = index;
1691		}
1692	} else {	} else {
1693	/* didn't succeed in finding a LT_ROOT, let's try LT_KERNELARGS.	cfg->defaultImage = FIRST_ENTRY_INDEX;
	* grub+multiboot uses LT_MBMODULE for the args, so check that too.
	*/
	line = getLineByType(LT_KERNELARGS|LT_MBMODULE, entry->lines);
	/* failed to find one */
	if (!line) return 0;
	for (i = 1; i < line->numElements; i++)
	if (!strncasecmp(line->elements[i].item, "root=", 5)) break;
	if (i < line->numElements)
	dev = line->elements[i].item + 5;
	else {
	/* it failed too...  can't find root= */
	return 0;
	}
1694	}	}
	}
1695
1696	dev = getpathbyspec(dev);	return cfg;
1697	if (!dev)	}
	return 0;
1698
1699	rootdev = findDiskForRoot();	static void writeDefault(FILE * out, char *indent,
1700	if (!rootdev)	char *separator, struct grubConfig *cfg)
1701	return 0;	{
1702		struct singleEntry *entry;
1703		struct singleLine *line;
1704		int i;
1705
1706		if (!cfg->defaultImage && cfg->flags == GRUB_CONFIG_NO_DEFAULT)
1707		return;
1708
1709		if (cfg->defaultImage == DEFAULT_SAVED)
1710		fprintf(out, "%sdefault%ssaved\n", indent, separator);
1711		else if (cfg->cfi->defaultIsSaved) {
1712		fprintf(out, "%sset default=\"${saved_entry}\"\n", indent);
1713		if (cfg->defaultImage >= FIRST_ENTRY_INDEX && cfg->cfi->setEnv) {
1714		char *title;
1715		int trueIndex, currentIndex;
1716
1717		trueIndex = 0;
1718		currentIndex = 0;
1719
1720		while ((entry = findEntryByIndex(cfg, currentIndex))) {
1721		if (!entry->skip) {
1722		if (trueIndex == cfg->defaultImage) {
1723		break;
1724		}
1725		trueIndex++;
1726		}
1727		currentIndex++;
1728		}
1729		line = getLineByType(LT_MENUENTRY, entry->lines);
1730		if (!line)
1731		line = getLineByType(LT_TITLE, entry->lines);
1732		if (line) {
1733		title = extractTitle(cfg, line);
1734		if (title)
1735		cfg->cfi->setEnv(cfg->cfi,
1736		"saved_entry", title);
1737		}
1738		}
1739		} else if (cfg->defaultImage >= FIRST_ENTRY_INDEX) {
1740		if (cfg->cfi->defaultIsIndex) {
1741		if (cfg->cfi->defaultIsVariable) {
1742		fprintf(out, "%sset default=\"%d\"\n", indent,
1743		cfg->defaultImage);
1744		} else {
1745		fprintf(out, "%sdefault%s%d\n", indent,
1746		separator, cfg->defaultImage);
1747		}
1748		} else {
1749		int image = cfg->defaultImage;
1750
1751	if (!getuuidbydev(rootdev) || !getuuidbydev(dev)) {	entry = cfg->entries;
1752	free(rootdev);	while (entry && entry->skip)
1753	return 0;	entry = entry->next;
1754	}
1755		i = 0;
1756		while (entry && i < image) {
1757		entry = entry->next;
1758
1759	if (strcmp(getuuidbydev(rootdev), getuuidbydev(dev))) {	while (entry && entry->skip)
1760	free(rootdev);	entry = entry->next;
1761	return 0;	i++;
1762	}	}
1763
1764		if (!entry)
1765		return;
1766
1767	free(rootdev);	line = getLineByType(LT_TITLE, entry->lines);
1768
1769	return 1;	if (line && line->numElements >= 2)
1770		fprintf(out, "%sdefault%s%s\n", indent,
1771		separator, line->elements[1].item);
1772		else if (line && (line->numElements == 1)
1773		&& cfg->cfi->titleBracketed) {
1774		char *title = extractTitle(cfg, line);
1775		if (title) {
1776		fprintf(out, "%sdefault%s%s\n", indent,
1777		separator, title);
1778		free(title);
1779		}
1780		}
1781		}
1782		}
1783	}	}
1784
1785	/* returns the first match on or after the one pointed to by index (if index	static int writeConfig(struct grubConfig *cfg, char *outName,
1786	is not NULL) which is not marked as skip */	const char *prefix)
1787	struct singleEntry * findEntryByPath(struct grubConfig * config,	{
1788	const char * kernel, const char * prefix,	FILE *out;
1789	int * index) {	struct singleLine *line;
1790	struct singleEntry * entry = NULL;	struct singleEntry *entry;
1791	struct singleLine * line;	char *tmpOutName;
1792	int i;	int needs = MAIN_DEFAULT;
1793	char * chptr;	struct stat sb;
1794	char * rootspec = NULL;	int i;
1795	enum lineType_e checkType = LT_KERNEL;	int rc = 0;
1796
1797		if (!strcmp(outName, "-")) {
1798		out = stdout;
1799		tmpOutName = NULL;
1800		} else {
1801		if (!lstat(outName, &sb) && S_ISLNK(sb.st_mode)) {
1802		char *buf;
1803		int len = 256;
1804		int rc;
1805
1806		/* most likely the symlink is relative, so change our
1807		directory to the dir of the symlink */
1808		char *dir = strdupa(outName);
1809		rc = chdir(dirname(dir));
1810		do {
1811		buf = alloca(len + 1);
1812		rc = readlink(basename(outName), buf, len);
1813		if (rc == len)
1814		len += 256;
1815		} while (rc == len);
1816
1817		if (rc < 0) {
1818		fprintf(stderr,
1819		_
1820		("grubby: error readlink link %s: %s\n"),
1821		outName, strerror(errno));
1822		return 1;
1823		}
1824
1825		outName = buf;
1826		outName[rc] = '\0';
1827		}
1828
1829	if (isdigit(*kernel)) {	tmpOutName = alloca(strlen(outName) + 2);
1830	int * indexVars = alloca(sizeof(*indexVars) * strlen(kernel));	sprintf(tmpOutName, "%s-", outName);
1831		out = fopen(tmpOutName, "w");
1832		if (!out) {
1833		fprintf(stderr, _("grubby: error creating %s: %s\n"),
1834		tmpOutName, strerror(errno));
1835		return 1;
1836		}
1837
1838	i = 0;	if (!stat(outName, &sb)) {
1839	indexVars[i] = strtol(kernel, &chptr, 10);	if (chmod(tmpOutName, sb.st_mode & ~(S_IFMT))) {
1840	while (*chptr == ',') {	fprintf(stderr,
1841	i++;	_
1842	kernel = chptr + 1;	("grubby: error setting perms on %s: %s\n"),
1843	indexVars[i] = strtol(kernel, &chptr, 10);	tmpOutName, strerror(errno));
1844		fclose(out);
1845		unlink(tmpOutName);
1846		return 1;
1847		}
1848		}
1849		}
1850
1851		line = cfg->theLines;
1852		struct keywordTypes *defaultKw = getKeywordByType(LT_DEFAULT, cfg->cfi);
1853		while (line) {
1854		if (line->type == LT_SET_VARIABLE && defaultKw &&
1855		line->numElements == 3 &&
1856		!strcmp(line->elements[1].item, defaultKw->key) &&
1857		!is_special_grub2_variable(line->elements[2].item)) {
1858		writeDefault(out, line->indent,
1859		line->elements[0].indent, cfg);
1860		needs &= ~MAIN_DEFAULT;
1861		} else if (line->type == LT_DEFAULT) {
1862		writeDefault(out, line->indent,
1863		line->elements[0].indent, cfg);
1864		needs &= ~MAIN_DEFAULT;
1865		} else if (line->type == LT_FALLBACK) {
1866		if (cfg->fallbackImage > -1)
1867		fprintf(out, "%s%s%s%d\n", line->indent,
1868		line->elements[0].item,
1869		line->elements[0].indent,
1870		cfg->fallbackImage);
1871		} else {
1872		if (lineWrite(out, line, cfg->cfi) == -1) {
1873		fprintf(stderr,
1874		_("grubby: error writing %s: %s\n"),
1875		tmpOutName, strerror(errno));
1876		fclose(out);
1877		unlink(tmpOutName);
1878		return 1;
1879		}
1880		}
1881
1882		line = line->next;
1883	}	}
1884
1885	if (*chptr) {	if (needs & MAIN_DEFAULT) {
1886	/* can't parse it, bail */	writeDefault(out, cfg->primaryIndent, "=", cfg);
1887	return NULL;	needs &= ~MAIN_DEFAULT;
1888	}	}
1889
	indexVars[i + 1] = -1;
1890	i = 0;	i = 0;
1891	if (index) {	while ((entry = findEntryByIndex(cfg, i++))) {
1892	while (i < *index) i++;	if (entry->skip)
1893	if (indexVars[i] == -1) return NULL;	continue;
1894
1895		line = entry->lines;
1896		while (line) {
1897		if (lineWrite(out, line, cfg->cfi) == -1) {
1898		fprintf(stderr,
1899		_("grubby: error writing %s: %s\n"),
1900		tmpOutName, strerror(errno));
1901		fclose(out);
1902		unlink(tmpOutName);
1903		return 1;
1904		}
1905		line = line->next;
1906		}
1907	}	}
1908
1909	entry = findEntryByIndex(config, indexVars[i]);	if (tmpOutName) {
1910	if (!entry) return NULL;	/* write userspace buffers */
1911		if (fflush(out))
1912		rc = 1;
1913
1914		/* purge the write-back cache with fsync() */
1915		if (fsync(fileno(out)))
1916		rc = 1;
1917
1918		if (fclose(out))
1919		rc = 1;
1920
1921		if (rc == 0 && rename(tmpOutName, outName)) {
1922		unlink(tmpOutName);
1923		rc = 1;
1924		}
1925
1926	line = getLineByType(LT_KERNEL|LT_HYPER, entry->lines);	/* fsync() the destination directory after rename */
1927	if (!line) return NULL;	if (rc == 0) {
1928		int dirfd;
1929
1930		dirfd = open(dirname(strdupa(outName)), O_RDONLY);
1931		if (dirfd < 0)
1932		rc = 1;
1933		else if (fsync(dirfd))
1934		rc = 1;
1935
1936	if (index) *index = indexVars[i];	if (dirfd >= 0)
1937	return entry;	close(dirfd);
1938	}	}
	if (!strcmp(kernel, "DEFAULT")) {
	if (index && *index > config->defaultImage) {
	entry = NULL;
	} else {
	entry = findEntryByIndex(config, config->defaultImage);
	if (entry && entry->skip)
	entry = NULL;
	else if (index)
	*index = config->defaultImage;
	}
	} else if (!strcmp(kernel, "ALL")) {
	if (index)
	i = *index;
	else
	i = 0;
1939
1940	while ((entry = findEntryByIndex(config, i))) {	if (rc == 1)
1941	if (!entry->skip) break;	fprintf(stderr,
1942	i++;	_("grubby: error flushing data: %m\n"));
1943	}	}
1944
1945	if (entry && index)	return rc;
1946	*index = i;	}
1947	} else {
1948	if (index)	static int numEntries(struct grubConfig *cfg)
1949	i = *index;	{
1950	else	int i = 0;
1951	i = 0;	struct singleEntry *entry;
1952
1953		entry = cfg->entries;
1954		while (entry) {
1955		if (!entry->skip)
1956		i++;
1957		entry = entry->next;
1958		}
1959		return i;
1960		}
1961
1962	if (!strncmp(kernel, "TITLE=", 6)) {	static char *findDiskForRoot()
1963	prefix = "";	{
1964	checkType = LT_TITLE;	int fd;
1965	kernel += 6;	char buf[65536];
1966		char *devname;
1967		char *chptr;
1968		int rc;
1969
1970		if ((fd = open(_PATH_MOUNTED, O_RDONLY)) < 0) {
1971		fprintf(stderr, "grubby: failed to open %s: %s\n",
1972		_PATH_MOUNTED, strerror(errno));
1973		return NULL;
1974		}
1975
1976		rc = read(fd, buf, sizeof(buf) - 1);
1977		if (rc <= 0) {
1978		fprintf(stderr, "grubby: failed to read %s: %s\n",
1979		_PATH_MOUNTED, strerror(errno));
1980		close(fd);
1981		return NULL;
1982	}	}
1983		close(fd);
1984		buf[rc] = '\0';
1985		chptr = buf;
1986
1987	for (entry = findEntryByIndex(config, i); entry; entry = entry->next, i++) {	char *foundanswer = NULL;
	if (entry->skip) continue;
1988
1989	dbgPrintf("findEntryByPath looking for %d %s in %p\n", checkType, kernel, entry);	while (chptr && chptr != buf + rc) {
1990		devname = chptr;
1991
1992	/* check all the lines matching checkType */	/*
1993	for (line = entry->lines; line; line = line->next) {	* The first column of a mtab entry is the device, but if the
1994	line = getLineByType(entry->multiboot && checkType == LT_KERNEL ?	* entry is a special device it won't start with /, so move
1995	LT_KERNEL|LT_MBMODULE|LT_HYPER :	* on to the next line.
1996	checkType, line);	*/
1997	if (!line) break;  /* not found in this entry */	if (*devname != '/') {
1998		chptr = strchr(chptr, '\n');
1999		if (chptr)
2000		chptr++;
2001		continue;
2002		}
2003
2004	if (line && line->numElements >= 2) {	/* Seek to the next space */
2005	rootspec = getRootSpecifier(line->elements[1].item);	chptr = strchr(chptr, ' ');
2006	if (!strcmp(line->elements[1].item +	if (!chptr) {
2007	((rootspec != NULL) ? strlen(rootspec) : 0),	fprintf(stderr, "grubby: error parsing %s: %s\n",
2008	kernel + strlen(prefix)))	_PATH_MOUNTED, strerror(errno));
2009	break;	return NULL;
2010		}
2011
2012		/*
2013		* The second column of a mtab entry is the mount point, we
2014		* are looking for '/' obviously.
2015		*/
2016		if (*(++chptr) == '/' && *(++chptr) == ' ') {
2017		/* remember the last / entry in mtab */
2018		foundanswer = devname;
2019	}	}
	}
2020
2021	/* make sure this entry has a kernel identifier; this skips	/* Next line */
2022	* non-Linux boot entries (could find netbsd etc, though, which is	chptr = strchr(chptr, '\n');
2023	* unfortunate)	if (chptr)
2024	*/	chptr++;
	if (line && getLineByType(LT_KERNEL|LT_HYPER, entry->lines))
	break; /* found 'im! */
2025	}	}
2026
2027	if (index) *index = i;	/* Return the last / entry found */
2028	}	if (foundanswer) {
2029		chptr = strchr(foundanswer, ' ');
2030		*chptr = '\0';
2031		return strdup(foundanswer);
2032		}
2033
2034	return entry;	return NULL;
2035	}	}
2036
2037	struct singleEntry * findEntryByIndex(struct grubConfig * cfg, int index) {	void printEntry(struct singleEntry *entry, FILE * f)
2038	struct singleEntry * entry;	{
2039		int i;
2040		struct singleLine *line;
2041
2042		for (line = entry->lines; line; line = line->next) {
2043		log_message(f, "DBG: %s", line->indent);
2044		for (i = 0; i < line->numElements; i++) {
2045		/* Need to handle this, because we strip the quotes from
2046		* menuentry when read it. */
2047		if (line->type == LT_MENUENTRY && i == 1) {
2048		if (!isquote(*line->elements[i].item))
2049		log_message(f, "\'%s\'",
2050		line->elements[i].item);
2051		else
2052		log_message(f, "%s",
2053		line->elements[i].item);
2054		log_message(f, "%s", line->elements[i].indent);
2055
2056	entry = cfg->entries;	continue;
2057	while (index && entry) {	}
	entry = entry->next;
	index--;
	}
2058
2059	return entry;	log_message(f, "%s%s",
2060		line->elements[i].item,
2061		line->elements[i].indent);
2062		}
2063		log_message(f, "\n");
2064		}
2065	}	}
2066
2067	/* Find a good template to use for the new kernel. An entry is	void notSuitablePrintf(struct singleEntry *entry, int okay, const char *fmt,
2068	* good if the kernel and mkinitrd exist (even if the entry	...)
2069	* is going to be removed). Try and use the default entry, but	{
2070	* if that doesn't work just take the first. If we can't find one,	static int once;
2071	* bail. */	va_list argp, argq;
	struct singleEntry * findTemplate(struct grubConfig * cfg, const char * prefix,
	int * indexPtr, int skipRemoved, int flags) {
	struct singleEntry * entry, * entry2;
	int index;
	if (cfg->defaultImage > -1) {
	entry = findEntryByIndex(cfg, cfg->defaultImage);
	if (entry && suitableImage(entry, prefix, skipRemoved, flags)) {
	if (indexPtr) *indexPtr = cfg->defaultImage;
	return entry;
	}
	}
2072
2073	index = 0;	va_start(argp, fmt);
	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;
2074
2075	return entry;	va_copy(argq, argp);
2076		if (!once) {
2077		log_time(NULL);
2078		log_message(NULL, "command line: %s\n", saved_command_line);
2079	}	}
2080		log_message(NULL, "DBG: Image entry %s: ",
2081		okay ? "succeeded" : "failed");
2082		log_vmessage(NULL, fmt, argq);
2083
2084	index++;	printEntry(entry, NULL);
2085	}	va_end(argq);
2086
2087		if (!debug) {
2088		once = 1;
2089		va_end(argp);
2090		return;
2091		}
2092
2093	fprintf(stderr, _("grubby fatal error: unable to find a suitable template\n"));	if (okay) {
2094		va_end(argp);
2095		return;
2096		}
2097
2098	return NULL;	if (!once)
2099		log_message(stderr, "DBG: command line: %s\n",
2100		saved_command_line);
2101		once = 1;
2102		fprintf(stderr, "DBG: Image entry failed: ");
2103		vfprintf(stderr, fmt, argp);
2104		printEntry(entry, stderr);
2105		va_end(argp);
2106	}	}
2107
2108	char * findBootPrefix(void) {	#define beginswith(s, c) ((s) && (s)[0] == (c))
	struct stat sb, sb2;
2109
2110	stat("/", &sb);	static int endswith(const char *s, char c)
2111	#ifdef __ia64__	{
2112	stat("/boot/efi/EFI/redhat/", &sb2);	int slen;
	#else
	stat("/boot", &sb2);
	#endif
2113
2114	if (sb.st_dev == sb2.st_dev)	if (!s || !s[0])
2115	return strdup("");	return 0;
2116		slen = strlen(s) - 1;
2117
2118	#ifdef __ia64__	return s[slen] == c;
	return strdup("/boot/efi/EFI/redhat/");
	#else
	return strdup("/boot");
	#endif
2119	}	}
2120
2121	void markRemovedImage(struct grubConfig * cfg, const char * image,	int suitableImage(struct singleEntry *entry, const char *bootPrefix,
2122	const char * prefix) {	int skipRemoved, int flags)
2123	struct singleEntry * entry;	{
2124		struct singleLine *line;
2125	if (!image) return;	char *fullName;
2126		int i;
2127	while ((entry = findEntryByPath(cfg, image, prefix, NULL)))	char *dev;
2128	entry->skip = 1;	size_t rs;
2129	}	char *rootdev;
2130
2131	void setDefaultImage(struct grubConfig * config, int hasNew,	if (skipRemoved && entry->skip) {
2132	const char * defaultKernelPath, int newIsDefault,	notSuitablePrintf(entry, 0, "marked to skip\n");
2133	const char * prefix, int flags) {	return 0;
2134	struct singleEntry * entry, * entry2, * newDefault;	}
2135	int i, j;
2136		line =
2137	if (newIsDefault) {	getLineByType(LT_KERNEL | LT_HYPER | LT_KERNEL_EFI | LT_KERNEL_16,
2138	config->defaultImage = 0;	entry->lines);
2139	return;	if (!line) {
2140	} else if (defaultKernelPath) {	notSuitablePrintf(entry, 0, "no line found\n");
2141	i = 0;	return 0;
2142	if (findEntryByPath(config, defaultKernelPath, prefix, &i)) {	}
2143	config->defaultImage = i;	if (line->numElements < 2) {
2144	} else {	notSuitablePrintf(entry, 0, "line has only %d elements\n",
2145	config->defaultImage = -1;	line->numElements);
2146	return;	return 0;
2147	}	}
	}
2148
2149	/* defaultImage now points to what we'd like to use, but before any order	if (flags & GRUBBY_BADIMAGE_OKAY) {
2150	changes */	notSuitablePrintf(entry, 1, "\n");
2151	if (config->defaultImage == DEFAULT_SAVED)	return 1;
2152	/* 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;
2153
2154	if (entry && !entry->skip) {	fullName = alloca(strlen(bootPrefix) +
2155	/* we can preserve the default */	strlen(line->elements[1].item) + 1);
2156	if (hasNew)	rs = getRootSpecifier(line->elements[1].item);
2157	config->defaultImage++;	int hasslash = endswith(bootPrefix, '/') ||
2158		beginswith(line->elements[1].item + rs, '/');
2159	/* count the number of entries erased before this one */	sprintf(fullName, "%s%s%s", bootPrefix, hasslash ? "" : "/",
2160	for (j = 0; j < config->defaultImage; j++) {	line->elements[1].item + rs);
2161	entry2 = findEntryByIndex(config, j);	if (access(fullName, R_OK)) {
2162	if (entry2->skip) config->defaultImage--;	notSuitablePrintf(entry, 0, "access to %s failed\n", fullName);
2163	}	return 0;
2164	} else if (hasNew) {	}
2165	config->defaultImage = 0;	for (i = 2; i < line->numElements; i++)
2166	} else {	if (!strncasecmp(line->elements[i].item, "root=", 5))
2167	/* Either we just erased the default (or the default line was bad	break;
2168	* to begin with) and didn't put a new one in. We'll use the first	if (i < line->numElements) {
2169	* valid image. */	dev = line->elements[i].item + 5;
2170	newDefault = findTemplate(config, prefix, &config->defaultImage, 1,	} else {
2171	flags);	/* look for a lilo style LT_ROOT line */
2172	if (!newDefault)	line = getLineByType(LT_ROOT, entry->lines);
	config->defaultImage = -1;
	}
	}
2173
2174	void setFallbackImage(struct grubConfig * config, int hasNew) {	if (line && line->numElements >= 2) {
2175	struct singleEntry * entry, * entry2;	dev = line->elements[1].item;
2176	int j;	} else {
2177		/* didn't succeed in finding a LT_ROOT, let's try
2178	if (config->fallbackImage == -1) return;	* LT_KERNELARGS.  grub+multiboot uses LT_MBMODULE
2179		* for the args, so check that too.
2180	entry = findEntryByIndex(config, config->fallbackImage);	*/
2181	if (!entry || entry->skip) {	line =
2182	config->fallbackImage = -1;	getLineByType(LT_KERNELARGS | LT_MBMODULE,
2183	return;	entry->lines);
2184	}
2185		/* failed to find one */
2186		if (!line) {
2187		notSuitablePrintf(entry, 0, "no line found\n");
2188		return 0;
2189		}
2190
2191	if (hasNew)	for (i = 1; i < line->numElements; i++)
2192	config->fallbackImage++;	if (!strncasecmp
2193		(line->elements[i].item, "root=", 5))
2194	/* count the number of entries erased before this one */	break;
2195	for (j = 0; j < config->fallbackImage; j++) {	if (i < line->numElements)
2196	entry2 = findEntryByIndex(config, j);	dev = line->elements[i].item + 5;
2197	if (entry2->skip) config->fallbackImage--;	else {
2198	}	notSuitablePrintf(entry, 0,
2199		"no root= entry found\n");
2200		/* it failed too...  can't find root= */
2201		return 0;
2202		}
2203		}
2204		}
2205
2206		dev = getpathbyspec(dev);
2207		if (!getpathbyspec(dev)) {
2208		notSuitablePrintf(entry, 0, "can't find blkid entry for %s\n",
2209		dev);
2210		return 0;
2211		} else
2212		dev = getpathbyspec(dev);
2213
2214		rootdev = findDiskForRoot();
2215		if (!rootdev) {
2216		notSuitablePrintf(entry, 0, "can't find root device\n");
2217		return 0;
2218		}
2219
2220		if (!getuuidbydev(rootdev) || !getuuidbydev(dev)) {
2221		notSuitablePrintf(entry, 0,
2222		"uuid missing: rootdev %s, dev %s\n",
2223		getuuidbydev(rootdev), getuuidbydev(dev));
2224		free(rootdev);
2225		return 0;
2226		}
2227
2228		if (strcmp(getuuidbydev(rootdev), getuuidbydev(dev))) {
2229		notSuitablePrintf(entry, 0,
2230		"uuid mismatch: rootdev %s, dev %s\n",
2231		getuuidbydev(rootdev), getuuidbydev(dev));
2232		free(rootdev);
2233		return 0;
2234		}
2235
2236		free(rootdev);
2237		notSuitablePrintf(entry, 1, "\n");
2238
2239		return 1;
2240	}	}
2241
2242	void displayEntry(struct singleEntry * entry, const char * prefix, int index) {	/* returns the first match on or after the one pointed to by index (if index
2243	struct singleLine * line;	is not NULL) which is not marked as skip */
2244	char * root = NULL;	struct singleEntry *findEntryByPath(struct grubConfig *config,
2245	int i;	const char *kernel, const char *prefix,
2246		int *index)
2247	printf("index=%d\n", index);	{
2248		struct singleEntry *entry = NULL;
2249	line = getLineByType(LT_KERNEL|LT_HYPER, entry->lines);	struct singleLine *line;
2250	if (!line) {	int i;
2251	printf("non linux entry\n");	char *chptr;
2252	return;	enum lineType_e checkType = LT_KERNEL;
2253	}
2254		if (isdigit(*kernel)) {
2255		int *indexVars = alloca(sizeof(*indexVars) * strlen(kernel));
2256
2257		i = 0;
2258		indexVars[i] = strtol(kernel, &chptr, 10);
2259		while (*chptr == ',') {
2260		i++;
2261		kernel = chptr + 1;
2262		indexVars[i] = strtol(kernel, &chptr, 10);
2263		}
2264
2265	printf("kernel=%s\n", line->elements[1].item);	if (*chptr) {
2266		/* can't parse it, bail */
2267		return NULL;
2268		}
2269
2270	if (line->numElements >= 3) {	indexVars[i + 1] = -1;
	printf("args=\"");
	i = 2;
	while (i < line->numElements) {
	if (!strncmp(line->elements[i].item, "root=", 5)) {
	root = line->elements[i].item + 5;
	} else {
	printf("%s%s", line->elements[i].item,
	line->elements[i].indent);
	}
2271
2272	i++;	i = 0;
2273	}	if (index) {
2274	printf("\"\n");	while (i < *index) {
2275	} else {	i++;
2276	line = getLineByType(LT_KERNELARGS, entry->lines);	if (indexVars[i] == -1)
2277	if (line) {	return NULL;
2278	char * s;	}
2279		}
2280
2281	printf("args=\"");	entry = findEntryByIndex(config, indexVars[i]);
2282	i = 1;	if (!entry)
2283	while (i < line->numElements) {	return NULL;
2284	if (!strncmp(line->elements[i].item, "root=", 5)) {
2285	root = line->elements[i].item + 5;	line =
2286		getLineByType(LT_KERNEL | LT_HYPER | LT_KERNEL_EFI |
2287		LT_KERNEL_16, entry->lines);
2288		if (!line)
2289		return NULL;
2290
2291		if (index)
2292		*index = indexVars[i];
2293		return entry;
2294		}
2295
2296		if (!strcmp(kernel, "DEFAULT")) {
2297		if (index && *index > config->defaultImage) {
2298		entry = NULL;
2299	} else {	} else {
2300	s = line->elements[i].item;	entry = findEntryByIndex(config, config->defaultImage);
2301		if (entry && entry->skip)
2302		entry = NULL;
2303		else if (index)
2304		*index = config->defaultImage;
2305		}
2306		} else if (!strcmp(kernel, "ALL")) {
2307		if (index)
2308		i = *index;
2309		else
2310		i = 0;
2311
2312		while ((entry = findEntryByIndex(config, i))) {
2313		if (!entry->skip)
2314		break;
2315		i++;
2316		}
2317
2318	printf("%s%s", s, line->elements[i].indent);	if (entry && index)
2319		*index = i;
2320		} else {
2321		if (index)
2322		i = *index;
2323		else
2324		i = 0;
2325
2326		if (!strncmp(kernel, "TITLE=", 6)) {
2327		prefix = "";
2328		checkType = LT_TITLE | LT_MENUENTRY;
2329		kernel += 6;
2330	}	}
2331
2332	i++;	for (entry = findEntryByIndex(config, i); entry;
2333	}	entry = entry->next, i++) {
2334		if (entry->skip)
2335		continue;
2336
2337		dbgPrintf("findEntryByPath looking for %d %s in %p\n",
2338		checkType, kernel, entry);
2339
2340		/* check all the lines matching checkType */
2341		for (line = entry->lines; line; line = line->next) {
2342		enum lineType_e ct = checkType;
2343		if (entry->multiboot && checkType == LT_KERNEL)
2344		ct = LT_KERNEL | LT_KERNEL_EFI |
2345		LT_MBMODULE | LT_HYPER |
2346		LT_KERNEL_16;
2347		else if (checkType & LT_KERNEL)
2348		ct = checkType | LT_KERNEL_EFI |
2349		LT_KERNEL_16;
2350		line = getLineByType(ct, line);
2351		if (!line)
2352		break; /* not found in this entry */
2353
2354		if (line && line->type != LT_MENUENTRY &&
2355		line->numElements >= 2) {
2356		if (!strcmp(line->elements[1].item +
2357		getRootSpecifier(
2358		line->elements[1].item),
2359		kernel + strlen(prefix)))
2360		break;
2361		}
2362		if (line->type == LT_MENUENTRY &&
2363		!strcmp(line->elements[1].item, kernel))
2364		break;
2365		}
2366
2367	s = line->elements[i - 1].indent;	/* make sure this entry has a kernel identifier; this skips
2368	printf("\"\n");	* non-Linux boot entries (could find netbsd etc, though, which is
2369		* unfortunate)
2370		*/
2371		if (line
2372		&& getLineByType(LT_KERNEL | LT_HYPER |
2373		LT_KERNEL_EFI | LT_KERNEL_16,
2374		entry->lines))
2375		break; /* found 'im! */
2376		}
2377
2378		if (index)
2379		*index = i;
2380	}	}
	}
2381
2382	if (!root) {	return entry;
2383	line = getLineByType(LT_ROOT, entry->lines);	}
	if (line && line->numElements >= 2)
	root=line->elements[1].item;
	}
2384
2385	if (root) {	struct singleEntry *findEntryByTitle(struct grubConfig *cfg, char *title,
2386	char * s = alloca(strlen(root) + 1);	int *index)
2387		{
2388	strcpy(s, root);	struct singleEntry *entry;
2389	if (s[strlen(s) - 1] == '"')	struct singleLine *line;
2390	s[strlen(s) - 1] = '\0';	int i;
2391	/* make sure the root doesn't have a trailing " */	char *newtitle;
2392	printf("root=%s\n", s);
2393	}	for (i = 0, entry = cfg->entries; entry; entry = entry->next, i++) {
2394		if (index && i < *index)
2395		continue;
2396		line = getLineByType(LT_TITLE, entry->lines);
2397		if (!line)
2398		line = getLineByType(LT_MENUENTRY, entry->lines);
2399		if (!line)
2400		continue;
2401		newtitle = grub2ExtractTitle(line);
2402		if (!newtitle)
2403		continue;
2404		if (!strcmp(title, newtitle))
2405		break;
2406		}
2407
2408	line = getLineByType(LT_INITRD, entry->lines);	if (!entry)
2409		return NULL;
2410
2411	if (line && line->numElements >= 2) {	if (index)
2412	printf("initrd=%s", prefix);	*index = i;
2413	for (i = 1; i < line->numElements; i++)	return entry;
	printf("%s%s", line->elements[i].item, line->elements[i].indent);
	printf("\n");
	}
2414	}	}
2415
2416	int parseSysconfigGrub(int * lbaPtr, char ** bootPtr) {	struct singleEntry *findEntryByIndex(struct grubConfig *cfg, int index)
2417	FILE * in;	{
2418	char buf[1024];	struct singleEntry *entry;
	char * chptr;
	char * start;
	char * param;
	in = fopen("/etc/conf.d/grub", "r");
	if (!in) return 1;
	if (lbaPtr) *lbaPtr = 0;
	if (bootPtr) *bootPtr = NULL;
	while (fgets(buf, sizeof(buf), in)) {
	start = buf;
	while (isspace(*start)) start++;
	if (*start == '#') continue;
	chptr = strchr(start, '=');
	if (!chptr) continue;
	chptr--;
	while (*chptr && isspace(*chptr)) chptr--;
	chptr++;
	*chptr = '\0';
	param = chptr + 1;
	while (*param && isspace(*param)) param++;
	if (*param == '=') {
	param++;
	while (*param && isspace(*param)) param++;
	}
	chptr = param;
	while (*chptr && !isspace(*chptr)) chptr++;
	*chptr = '\0';
	if (!strcmp(start, "forcelba") && !strcmp(param, "1") && lbaPtr)
	*lbaPtr = 1;
	else if (!strcmp(start, "boot") && bootPtr)
	*bootPtr = strdup(param);
	}
	fclose(in);
2419
2420	return 0;	entry = cfg->entries;
2421	}	while (index && entry) {
2422		entry = entry->next;
2423		index--;
2424		}
2425
2426	void dumpSysconfigGrub(void) {	return entry;
	char * boot;
	int lba;
	if (!parseSysconfigGrub(&lba, &boot)) {
	if (lba) printf("lba\n");
	if (boot) printf("boot=%s\n", boot);
	}
2427	}	}
2428
2429	int displayInfo(struct grubConfig * config, char * kernel,	/* Find a good template to use for the new kernel. An entry is
2430	const char * prefix) {	* good if the kernel and mkinitrd exist (even if the entry
2431	int i = 0;	* is going to be removed). Try and use the default entry, but
2432	struct singleEntry * entry;	* if that doesn't work just take the first. If we can't find one,
2433	struct singleLine * line;	* bail. */
2434		struct singleEntry *findTemplate(struct grubConfig *cfg, const char *prefix,
2435	entry = findEntryByPath(config, kernel, prefix, &i);	int *indexPtr, int skipRemoved, int flags)
2436	if (!entry) {	{
2437	fprintf(stderr, _("grubby: kernel not found\n"));	struct singleEntry *entry, *entry2;
2438	return 1;	int index;
	}
2439
2440	/* this is a horrible hack to support /etc/conf.d/grub; there must	if (cfg->cfi->defaultIsSaved) {
2441	be a better way */	if (cfg->cfi->getEnv) {
2442	if (config->cfi == &grubConfigType) {	char *defTitle =
2443	dumpSysconfigGrub();	cfg->cfi->getEnv(cfg->cfi, "saved_entry");
2444	} else {	if (defTitle) {
2445	line = getLineByType(LT_BOOT, config->theLines);	int index = 0;
2446	if (line && line->numElements >= 1) {	if (isnumber(defTitle)) {
2447	printf("boot=%s\n", line->elements[1].item);	index = atoi(defTitle);
2448		entry = findEntryByIndex(cfg, index);
2449		} else {
2450		entry =
2451		findEntryByTitle(cfg, defTitle,
2452		&index);
2453		}
2454		if (entry
2455		&& suitableImage(entry, prefix, skipRemoved,
2456		flags)) {
2457		cfg->defaultImage = index;
2458		if (indexPtr)
2459		*indexPtr = index;
2460		return entry;
2461		}
2462		}
2463		}
2464		} else if (cfg->defaultImage >= FIRST_ENTRY_INDEX) {
2465		entry = findEntryByIndex(cfg, cfg->defaultImage);
2466		if (entry && suitableImage(entry, prefix, skipRemoved, flags)) {
2467		if (indexPtr)
2468		*indexPtr = cfg->defaultImage;
2469		return entry;
2470		}
2471	}	}
2472
2473	line = getLineByType(LT_LBA, config->theLines);	index = 0;
2474	if (line) printf("lba\n");	while ((entry = findEntryByIndex(cfg, index))) {
2475	}	if (suitableImage(entry, prefix, skipRemoved, flags)) {
2476		int j, unmodifiedIndex;
2477	displayEntry(entry, prefix, i);
2478		unmodifiedIndex = index;
2479	i++;
2480	while ((entry = findEntryByPath(config, kernel, prefix, &i))) {	for (j = 0; j < unmodifiedIndex; j++) {
2481	displayEntry(entry, prefix, i);	entry2 = findEntryByIndex(cfg, j);
2482	i++;	if (entry2->skip)
2483	}	index--;
2484		}
2485		if (indexPtr)
2486		*indexPtr = index;
2487
2488	return 0;	return entry;
2489	}	}
2490
2491	struct singleLine * addLineTmpl(struct singleEntry * entry,	index++;
	struct singleLine * tmplLine,
	struct singleLine * prevLine,
	const char * val,
	struct configFileInfo * cfi)
	{
	struct singleLine * newLine = lineDup(tmplLine);
	if (val) {
	/* override the inherited value with our own.
	* This is a little weak because it only applies to elements[1]
	*/
	if (newLine->numElements > 1)
	removeElement(newLine, 1);
	insertElement(newLine, val, 1, cfi);
	/* but try to keep the rootspec from the template... sigh */
	if (tmplLine->type & (LT_HYPER|LT_KERNEL|LT_MBMODULE|LT_INITRD)) {
	char * rootspec = getRootSpecifier(tmplLine->elements[1].item);
	if (rootspec != NULL) {
	free(newLine->elements[1].item);
	newLine->elements[1].item =
	sdupprintf("%s%s", rootspec, val);
	}
2492	}	}
	}
	dbgPrintf("addLineTmpl(%s)\n", newLine->numElements ?
	newLine->elements[0].item : "");
2493
2494	if (!entry->lines) {	fprintf(stderr,
2495	/* first one on the list */	_("grubby fatal error: unable to find a suitable template\n"));
	entry->lines = newLine;
	} else if (prevLine) {
	/* add after prevLine */
	newLine->next = prevLine->next;
	prevLine->next = newLine;
	}
2496
2497	return newLine;	return NULL;
2498	}	}
2499
2500	/* val may be NULL */	char *findBootPrefix(void)
2501	struct singleLine *  addLine(struct singleEntry * entry,	{
2502	struct configFileInfo * cfi,	struct stat sb, sb2;
	enum lineType_e type, char * defaultIndent,
	const char * val) {
	struct singleLine * line, * prev;
	struct keywordTypes * kw;
	struct singleLine tmpl;
	/* NB: This function shouldn't allocate items on the heap, rather on the
	* stack since it calls addLineTmpl which will make copies.
	*/
	if (type == LT_TITLE && cfi->titleBracketed) {
	/* we're doing a bracketed title (zipl) */
	tmpl.type = type;
	tmpl.numElements = 1;
	tmpl.elements = alloca(sizeof(*tmpl.elements));
	tmpl.elements[0].item = alloca(strlen(val)+3);
	sprintf(tmpl.elements[0].item, "[%s]", val);
	tmpl.elements[0].indent = "";
	val = NULL;
	} else {
	kw = getKeywordByType(type, cfi);
	if (!kw) abort();
	tmpl.type = type;
	tmpl.numElements = val ? 2 : 1;
	tmpl.elements = alloca(sizeof(*tmpl.elements) * tmpl.numElements);
	tmpl.elements[0].item = kw->key;
	tmpl.elements[0].indent = alloca(2);
	sprintf(tmpl.elements[0].indent, "%c", kw->nextChar);
	if (val) {
	tmpl.elements[1].item = (char *)val;
	tmpl.elements[1].indent = "";
	}
	}
2503
2504	/* The last non-empty line gives us the indention to us and the line	stat("/", &sb);
2505	to insert after. Note that comments are considered empty lines, which	#ifdef __ia64__
2506	may not be ideal? If there are no lines or we are looking at the	stat("/boot/efi/EFI/redhat/", &sb2);
2507	first line, we use defaultIndent (the first line is normally indented	#else
2508	differently from the rest) */	stat("/boot", &sb2);
2509	for (line = entry->lines, prev = NULL; line; line = line->next) {	#endif
	if (line->numElements) prev = line;
	/* fall back on the last line if prev isn't otherwise set */
	if (!line->next && !prev) prev = line;
	}
2510
2511	if (prev == entry->lines)	if (sb.st_dev == sb2.st_dev)
2512	tmpl.indent = defaultIndent ?: "";	return strdup("");
	else
	tmpl.indent = prev->indent;
2513
2514	return addLineTmpl(entry, &tmpl, prev, val, cfi);	#ifdef __ia64__
2515		return strdup("/boot/efi/EFI/redhat/");
2516		#else
2517		return strdup("/boot");
2518		#endif
2519	}	}
2520
2521	void removeLine(struct singleEntry * entry, struct singleLine * line) {	void markRemovedImage(struct grubConfig *cfg, const char *image,
2522	struct singleLine * prev;	const char *prefix)
2523	int i;	{
2524		struct singleEntry *entry;
2525
2526	for (i = 0; i < line->numElements; i++) {	if (!image)
2527	free(line->elements[i].item);	return;
	free(line->elements[i].indent);
	}
	free(line->elements);
	free(line->indent);
2528
2529	if (line == entry->lines) {	/* check and see if we're removing the default image */
2530	entry->lines = line->next;	if (isdigit(*image)) {
2531	} else {	entry = findEntryByPath(cfg, image, prefix, NULL);
2532	prev = entry->lines;	if (entry)
2533	while (prev->next != line) prev = prev->next;	entry->skip = 1;
2534	prev->next = line->next;	return;
2535	}	}
2536
2537	free(line);	while ((entry = findEntryByPath(cfg, image, prefix, NULL)))
2538		entry->skip = 1;
2539	}	}
2540
2541	static void insertElement(struct singleLine * line,	void setDefaultImage(struct grubConfig *config, int isAddingBootEntry,
2542	const char * item, int insertHere,	const char *defaultKernelPath, int newBootEntryIsDefault,
2543	struct configFileInfo * cfi)	const char *prefix, int flags,
2544		int newDefaultBootEntryIndex, int newBootEntryIndex)
2545	{	{
2546	struct keywordTypes * kw;	struct singleEntry *bootEntry, *newDefault;
2547	char indent[2] = "";	int indexToVerify, firstKernelEntryIndex, currentLookupIndex;
2548
2549	/* sanity check */	/* initialize */
2550	if (insertHere > line->numElements) {	currentLookupIndex = FIRST_ENTRY_INDEX;
	dbgPrintf("insertElement() adjusting insertHere from %d to %d\n",
	insertHere, line->numElements);
	insertHere = line->numElements;
	}
2551
2552	line->elements = realloc(line->elements, (line->numElements + 1) *	/* handle the two cases where the user explictly picks the default
2553	sizeof(*line->elements));	* boot entry index as it would exist post-modification */
	memmove(&line->elements[insertHere+1],
	&line->elements[insertHere],
	(line->numElements - insertHere) *
	sizeof(*line->elements));
	line->elements[insertHere].item = strdup(item);
	kw = getKeywordByType(line->type, cfi);
	if (line->numElements == 0) {
	indent[0] = '\0';
	} else if (insertHere == 0) {
	indent[0] = kw->nextChar;
	} else if (kw->separatorChar != '\0') {
	indent[0] = kw->separatorChar;
	} else {
	indent[0] = ' ';
	}
2554
2555	if (insertHere > 0 && line->elements[insertHere-1].indent[0] == '\0') {	/* Case 1: user chose to make the latest boot entry the default */
2556	/* move the end-of-line forward */	if (newBootEntryIsDefault) {
2557	line->elements[insertHere].indent =	config->defaultImage = newBootEntryIndex;
2558	line->elements[insertHere-1].indent;	return;
2559	line->elements[insertHere-1].indent = strdup(indent);	}
	} else {
	line->elements[insertHere].indent = strdup(indent);
	}
2560
2561	line->numElements++;	/* Case 2: user picked an arbitrary index as the default boot entry */
2562		if (newDefaultBootEntryIndex >= FIRST_ENTRY_INDEX) {
2563		indexToVerify = newDefaultBootEntryIndex;
2564
2565	dbgPrintf("insertElement(%s, '%s%s', %d)\n",	/* user chose to make latest boot entry the default */
2566	line->elements[0].item,	if (newDefaultBootEntryIndex == newBootEntryIndex) {
2567	line->elements[insertHere].item,	config->defaultImage = newBootEntryIndex;
2568	line->elements[insertHere].indent,	return;
2569	insertHere);	}
	}
2570
2571	static void removeElement(struct singleLine * line, int removeHere) {	/* the user picks the default index based on the
2572	int i;	* order of the bootloader configuration after
2573		* modification; ensure we are checking for the
2574	/* sanity check */	* existence of the correct entry */
2575	if (removeHere >= line->numElements) return;	if (newBootEntryIndex < newDefaultBootEntryIndex) {
2576		if (!config->isModified)
2577	dbgPrintf("removeElement(%s, %d:%s)\n", line->elements[0].item,	indexToVerify--;
2578	removeHere, line->elements[removeHere].item);	}
	free(line->elements[removeHere].item);
2579
2580	if (removeHere > 1) {	/* verify the user selected index will exist */
2581	/* previous argument gets this argument's post-indentation */	if (findEntryByIndex(config, indexToVerify)) {
2582	free(line->elements[removeHere-1].indent);	config->defaultImage = newDefaultBootEntryIndex;
2583	line->elements[removeHere-1].indent =	} else {
2584	line->elements[removeHere].indent;	config->defaultImage = NO_DEFAULT_ENTRY;
2585	} else {	}
	free(line->elements[removeHere].indent);
	}
2586
2587	/* now collapse the array, but don't bother to realloc smaller */	return;
	for (i = removeHere; i < line->numElements - 1; i++)
	line->elements[i] = line->elements[i + 1];
	line->numElements--;
	}
	int argMatch(const char * one, const char * two) {
	char * first, * second;
	char * chptr;
	first = strcpy(alloca(strlen(one) + 1), one);
	second = strcpy(alloca(strlen(two) + 1), two);
	chptr = strchr(first, '=');
	if (chptr) *chptr = '\0';
	chptr = strchr(second, '=');
	if (chptr) *chptr = '\0';
	return strcmp(first, second);
	}
	int updateActualImage(struct grubConfig * cfg, const char * image,
	const char * prefix, const char * addArgs,
	const char * removeArgs, int multibootArgs) {
	struct singleEntry * entry;
	struct singleLine * line, * rootLine;
	int index = 0;
	int i, k;
	const char ** newArgs, ** oldArgs;
	const char ** arg;
	int useKernelArgs, useRoot;
	int firstElement;
	int *usedElements;
	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;
2588	}	}
	}
2589
2590	if (!removeArgs) {	/* handle cases where the index value may shift */
	oldArgs = malloc(sizeof(*oldArgs));
	*oldArgs = NULL;
	} else {
	if (poptParseArgvString(removeArgs, NULL, &oldArgs)) {
	fprintf(stderr,
	_("grubby: error separating arguments '%s'\n"), removeArgs);
	free(newArgs);
	return 1;
	}
	}
2591
2592		/* check validity of existing default or first-entry-found
2593		selection */
2594		if (defaultKernelPath) {
2595		/* we must initialize this */
2596		firstKernelEntryIndex = 0;
2597		/* user requested first-entry-found */
2598		if (!findEntryByPath(config, defaultKernelPath,
2599		prefix, &firstKernelEntryIndex)) {
2600		/* don't change default if can't find match */
2601		config->defaultImage = NO_DEFAULT_ENTRY;
2602		return;
2603		}
2604
2605	useKernelArgs = (getKeywordByType(LT_KERNELARGS, cfg->cfi)	config->defaultImage = firstKernelEntryIndex;
	&& (!multibootArgs || cfg->cfi->mbConcatArgs));
2606
2607	useRoot = (getKeywordByType(LT_ROOT, cfg->cfi)	/* this is where we start looking for decrement later */
2608	&& !multibootArgs);	currentLookupIndex = config->defaultImage;
2609
2610	for (; (entry = findEntryByPath(cfg, image, prefix, &index)); index++) {	if (isAddingBootEntry && !config->isModified &&
2611		(newBootEntryIndex < config->defaultImage)) {
2612		/* increment because new entry added before default */
2613		config->defaultImage++;
2614		}
2615		} else {
2616		/* check to see if the default is stored in the environment */
2617		if (config->defaultImage < FIRST_ENTRY_INDEX) {
2618		if (config->defaultImage == DEFAULT_SAVED || config->defaultImage == DEFAULT_SAVED_GRUB2)
2619		{
2620		if (config->cfi->defaultIsSaved) {
2621		if (config->cfi->getEnv) {
2622		char *defaultTitle = config->cfi->getEnv(config->cfi, "saved_entry");
2623
2624		if (defaultTitle) {
2625		if (isnumber(defaultTitle)) {
2626		currentLookupIndex = atoi(defaultTitle);
2627		} else {
2628		findEntryByTitle(config, defaultTitle, &currentLookupIndex);
2629		}
2630		/* set the default Image to an actual index */
2631		config->defaultImage = currentLookupIndex;
2632		}
2633		}
2634		}
2635		}
2636		} else {
2637		/* use pre-existing default entry from the file*/
2638		currentLookupIndex = config->defaultImage;
2639		}
2640
2641	if (multibootArgs && !entry->multiboot)	if (isAddingBootEntry
2642	continue;	&& (newBootEntryIndex <= config->defaultImage)) {
2643		config->defaultImage++;
2644
2645	/* Determine where to put the args.  If this config supports	if (config->isModified) {
2646	* LT_KERNELARGS, use that.  Otherwise use	currentLookupIndex++;
2647	* LT_HYPER/LT_KERNEL/LT_MBMODULE lines.	}
2648	*/	}
	if (useKernelArgs) {
	line = getLineByType(LT_KERNELARGS, entry->lines);
	if (!line) {
	/* no LT_KERNELARGS, need to add it */
	line = addLine(entry, cfg->cfi, LT_KERNELARGS,
	cfg->secondaryIndent, NULL);
	}
	firstElement = 1;
	} else if (multibootArgs) {
	line = getLineByType(LT_HYPER, entry->lines);
	if (!line) {
	/* a multiboot entry without LT_HYPER? */
	continue;
	}
	firstElement = 2;
	} else {
	line = getLineByType(LT_KERNEL|LT_MBMODULE, entry->lines);
	if (!line) {
	/* no LT_KERNEL or LT_MBMODULE in this entry? */
	continue;
	}
	firstElement = 2;
2649	}	}
2650
2651	/* handle the elilo case which does:	/* sanity check - is this entry index valid? */
2652	*   append="hypervisor args -- kernel args"	bootEntry = findEntryByIndex(config, currentLookupIndex);
	*/
	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;
	}
	}
	if (i < line->numElements && doreplace) {
	/* direct replacement */
	free(line->elements[i].item);
	line->elements[i].item = strdup(*arg);
2653
2654	} else if (useRoot && !strncmp(*arg, "root=/dev/", 10)) {	if ((bootEntry && bootEntry->skip) || !bootEntry) {
2655	/* root= replacement */	/* entry is to be skipped or is invalid */
2656	rootLine = getLineByType(LT_ROOT, entry->lines);	if (isAddingBootEntry) {
2657	if (rootLine) {	config->defaultImage = newBootEntryIndex;
2658	free(rootLine->elements[1].item);	return;
2659	rootLine->elements[1].item = strdup(*arg + 5);	}
2660	} else {	newDefault =
2661	rootLine = addLine(entry, cfg->cfi, LT_ROOT,	findTemplate(config, prefix, &config->defaultImage, 1,
2662	cfg->secondaryIndent, *arg + 5);	flags);
2663		if (!newDefault) {
2664		config->defaultImage = NO_DEFAULT_ENTRY;
2665	}	}
	}
2666
2667	else {	return;
	/* insert/append */
	insertElement(line, *arg, i, cfg->cfi);
	usedElements = realloc(usedElements, line->numElements *
	sizeof(*usedElements));
	memmove(&usedElements[i + 1], &usedElements[i],
	line->numElements - i - 1);
	usedElements[i] = 1;
	/* if we updated a root= here even though there is a
	LT_ROOT available we need to remove the LT_ROOT entry
	(this will happen if we switch from a device to a label) */
	if (useRoot && !strncmp(*arg, "root=", 5)) {
	rootLine = getLineByType(LT_ROOT, entry->lines);
	if (rootLine)
	removeLine(entry, rootLine);
	}
	}
	}
	free(usedElements);
	for (arg = oldArgs; *arg; arg++) {
	for (i = firstElement; i < line->numElements; i++) {
	if (multibootArgs && cfg->cfi->mbConcatArgs &&
	!strcmp(line->elements[i].item, "--"))
	/* reached the end of hyper args, stop here */
	break;
	if (!argMatch(line->elements[i].item, *arg)) {
	removeElement(line, i);
	break;
	}
	}
	/* handle removing LT_ROOT line too */
	if (useRoot && !strncmp(*arg, "root=", 5)) {
	rootLine = getLineByType(LT_ROOT, entry->lines);
	if (rootLine)
	removeLine(entry, rootLine);
	}
	}
	if (line->numElements == 1) {
	/* don't need the line at all (note it has to be a
	LT_KERNELARGS for this to happen */
	removeLine(entry, line);
2668	}	}
	}
2669
2670	free(newArgs);	currentLookupIndex--;
	free(oldArgs);
2671
2672	return 0;	/* decrement index by the total number of entries deleted */
	}
2673
2674	int updateImage(struct grubConfig * cfg, const char * image,	for (indexToVerify = currentLookupIndex;
2675	const char * prefix, const char * addArgs,	indexToVerify >= FIRST_ENTRY_INDEX; indexToVerify--) {
	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;
	}
2676
2677	return 0;	bootEntry = findEntryByIndex(config, indexToVerify);
	}
2678
2679	int checkDeviceBootloader(const char * device, const unsigned char * boot) {	if (bootEntry && bootEntry->skip) {
2680	int fd;	config->defaultImage--;
2681	unsigned char bootSect[512];	}
2682	int offset;	}
2683		}
	fd = open(device, O_RDONLY);
	if (fd < 0) {
	fprintf(stderr, _("grubby: unable to open %s: %s\n"),
	device, strerror(errno));
	return 1;
	}
2684
2685	if (read(fd, bootSect, 512) != 512) {	void setFallbackImage(struct grubConfig *config, int hasNew)
2686	fprintf(stderr, _("grubby: unable to read %s: %s\n"),	{
2687	device, strerror(errno));	struct singleEntry *entry, *entry2;
2688	return 1;	int j;
	}
	close(fd);
2689
2690	/* first three bytes should match, a jmp short should be in there */	if (config->fallbackImage == -1)
2691	if (memcmp(boot, bootSect, 3))	return;
	return 0;
2692
2693	if (boot[1] == 0xeb) {	entry = findEntryByIndex(config, config->fallbackImage);
2694	offset = boot[2] + 2;	if (!entry || entry->skip) {
2695	} else if (boot[1] == 0xe8 || boot[1] == 0xe9) {	config->fallbackImage = -1;
2696	offset = (boot[3] << 8) + boot[2] + 2;	return;
2697	} 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;
	}
2698
2699	if (memcmp(boot + offset, bootSect + offset, CODE_SEG_SIZE))	if (hasNew)
2700	return 0;	config->fallbackImage++;
2701
2702	return 2;	/* count the number of entries erased before this one */
2703		for (j = 0; j < config->fallbackImage; j++) {
2704		entry2 = findEntryByIndex(config, j);
2705		if (entry2->skip)
2706		config->fallbackImage--;
2707		}
2708	}	}
2709
2710	int checkLiloOnRaid(char * mdDev, const unsigned char * boot) {	void displayEntry(struct grubConfig *config, struct singleEntry *entry, const char *prefix, int index)
2711	int fd;	{
2712	char buf[65536];	struct singleLine *line;
2713	char * end;	char *root = NULL;
2714	char * chptr;	int i;
2715	char * chptr2;	int j;
	int rc;
2716
2717	/* it's on raid; we need to parse /proc/mdstat and check all of the	printf("index=%d\n", index);
	*raw* devices listed in there */
2718
2719	if (!strncmp(mdDev, "/dev/", 5))	line =
2720	mdDev += 5;	getLineByType(LT_KERNEL | LT_HYPER | LT_KERNEL_EFI | LT_KERNEL_16,
2721		entry->lines);
2722		if (!line) {
2723		printf("non linux entry\n");
2724		return;
2725		}
2726
2727	if ((fd = open("/proc/mdstat", O_RDONLY)) < 0) {	if (!strncmp(prefix, line->elements[1].item, strlen(prefix)))
2728	fprintf(stderr, _("grubby: failed to open /proc/mdstat: %s\n"),	printf("kernel=%s\n", line->elements[1].item);
2729	strerror(errno));	else
2730	return 2;	printf("kernel=%s%s\n", prefix, line->elements[1].item);
	}
2731
2732	rc = read(fd, buf, sizeof(buf) - 1);	if (line->numElements >= 3) {
2733	if (rc < 0 || rc == (sizeof(buf) - 1)) {	printf("args=\"");
2734	fprintf(stderr, _("grubby: failed to read /proc/mdstat: %s\n"),	i = 2;
2735	strerror(errno));	while (i < line->numElements) {
2736	close(fd);	if (!strncmp(line->elements[i].item, "root=", 5)) {
2737	return 2;	root = line->elements[i].item + 5;
2738	}	} else {
2739	close(fd);	printf("%s%s", line->elements[i].item,
2740	buf[rc] = '\0';	line->elements[i].indent);
2741		}
2742
2743	chptr = buf;	i++;
2744	while (*chptr) {	}
2745	end = strchr(chptr, '\n');	printf("\"\n");
2746	if (!end) break;	} else {
2747	*end = '\0';	line = getLineByType(LT_KERNELARGS, entry->lines);
2748		if (line) {
2749		char *s;
2750
2751		printf("args=\"");
2752		i = 1;
2753		while (i < line->numElements) {
2754		if (!strncmp
2755		(line->elements[i].item, "root=", 5)) {
2756		root = line->elements[i].item + 5;
2757		} else {
2758		s = line->elements[i].item;
2759
2760	if (!strncmp(chptr, mdDev, strlen(mdDev)) &&	printf("%s%s", s,
2761	chptr[strlen(mdDev)] == ' ') {	line->elements[i].indent);
2762		}
2763
2764	/* found the device */	i++;
2765	while (*chptr && *chptr != ':') chptr++;	}
	chptr++;
	while (*chptr && isspace(*chptr)) chptr++;
	/* skip the "active" bit */
	while (*chptr && !isspace(*chptr)) chptr++;
	while (*chptr && isspace(*chptr)) chptr++;
	/* skip the raid level */
	while (*chptr && !isspace(*chptr)) chptr++;
	while (*chptr && isspace(*chptr)) chptr++;
	/* everything else is partition stuff */
	while (*chptr) {
	chptr2 = chptr;
	while (*chptr2 && *chptr2 != '[') chptr2++;
	if (!*chptr2) break;
	/* yank off the numbers at the end */
	chptr2--;
	while (isdigit(*chptr2) && chptr2 > chptr) chptr2--;
	chptr2++;
	*chptr2 = '\0';
	/* Better, now we need the /dev/ back. We're done with
	* everything before this point, so we can just put
	* the /dev/ part there. There will always be room. */
	memcpy(chptr - 5, "/dev/", 5);
	rc = checkDeviceBootloader(chptr - 5, boot);
	if (rc != 2) {
	return rc;
	}
	chptr = chptr2 + 1;
	/* skip the [11] bit */
	while (*chptr && !isspace(*chptr)) chptr++;
	/* and move to the next one */
	while (*chptr && isspace(*chptr)) chptr++;
	}
2766
2767	/*  we're good to go */	s = line->elements[i - 1].indent;
2768	return 2;	printf("\"\n");
2769		}
2770	}	}
2771
2772	chptr = end + 1;	if (!root) {
2773	}	line = getLineByType(LT_ROOT, entry->lines);
2774		if (line && line->numElements >= 2)
2775		root = line->elements[1].item;
2776		}
2777
2778	fprintf(stderr,	if (root) {
2779	_("grubby: raid device /dev/%s not found in /proc/mdstat\n"),	char *s = alloca(strlen(root) + 1);
	mdDev);
	return 0;
	}
2780
2781	int checkForLilo(struct grubConfig * config) {	strcpy(s, root);
2782	int fd;	if (s[strlen(s) - 1] == '"')
2783	unsigned char boot[512];	s[strlen(s) - 1] = '\0';
2784	struct singleLine * line;	/* make sure the root doesn't have a trailing " */
2785		printf("root=%s\n", s);
2786	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;
	}
2787
2788	if (line->numElements != 2) return 1;	line =
2789		getLineByType(LT_INITRD | LT_INITRD_EFI | LT_INITRD_16,
2790		entry->lines);
2791
2792	fd = open("/boot/boot.b", O_RDONLY);	if (line && line->numElements >= 2) {
2793	if (fd < 0) {	if (!strncmp(prefix, line->elements[1].item, strlen(prefix)))
2794	fprintf(stderr, _("grubby: unable to open %s: %s\n"),	printf("initrd=");
2795	"/boot/boot.b", strerror(errno));	else
2796	return 1;	printf("initrd=%s", prefix);
	}
2797
2798	if (read(fd, boot, 512) != 512) {	for (i = 1; i < line->numElements; i++)
2799	fprintf(stderr, _("grubby: unable to read %s: %s\n"),	printf("%s%s", line->elements[i].item,
2800	"/boot/boot.b", strerror(errno));	line->elements[i].indent);
2801	return 1;	printf("\n");
2802	}	}
	close(fd);
2803
2804	if (!strncmp("/dev/md", line->elements[1].item, 7))	line = getLineByType(LT_TITLE, entry->lines);
2805	return checkLiloOnRaid(line->elements[1].item, boot);	if (line) {
2806		char *entryTitle;
2807		/* if we can extractTitle, then it's a zipl config and
2808		* if not then we go ahead with what's existed prior */
2809		entryTitle = extractTitle(config, line);
2810		if (!entryTitle) {
2811		entryTitle=line->elements[1].item;
2812		}
2813		printf("title=%s\n", entryTitle);
2814		} else {
2815		char *title;
2816		line = getLineByType(LT_MENUENTRY, entry->lines);
2817		if (line) {
2818		title = grub2ExtractTitle(line);
2819		if (title)
2820		printf("title=%s\n", title);
2821		}
2822		}
2823
2824	return checkDeviceBootloader(line->elements[1].item, boot);	for (j = 0, line = entry->lines; line; line = line->next) {
2825		if ((line->type & LT_MBMODULE) && line->numElements >= 2) {
2826		if (!strncmp
2827		(prefix, line->elements[1].item, strlen(prefix)))
2828		printf("mbmodule%d=", j);
2829		else
2830		printf("mbmodule%d=%s", j, prefix);
2831
2832		for (i = 1; i < line->numElements; i++)
2833		printf("%s%s", line->elements[i].item,
2834		line->elements[i].indent);
2835		printf("\n");
2836		j++;
2837		}
2838		}
2839	}	}
2840
2841	int checkForGrub(struct grubConfig * config) {	int isSuseSystem(void)
2842	int fd;	{
2843	unsigned char bootSect[512];	const char *path;
2844	char * boot;	const static char default_path[] = "/etc/SuSE-release";
	if (parseSysconfigGrub(NULL, &boot))
	return 0;
2845
2846	/* assume grub is not installed -- not an error condition */	if ((path = getenv("GRUBBY_SUSE_RELEASE")) == NULL)
2847	if (!boot)	path = default_path;
	return 0;
2848
2849	fd = open("/boot/grub/stage1", O_RDONLY);	if (!access(path, R_OK))
2850	if (fd < 0)	return 1;
	/* this doesn't exist if grub hasn't been installed */
2851	return 0;	return 0;
	if (read(fd, bootSect, 512) != 512) {
	fprintf(stderr, _("grubby: unable to read %s: %s\n"),
	"/boot/grub/stage1", strerror(errno));
	close(fd);
	return 1;
	}
	close(fd);
	return checkDeviceBootloader(boot, bootSect);
2852	}	}
2853
2854	int checkForExtLinux(struct grubConfig * config) {	int isSuseGrubConf(const char *path)
2855	int fd;	{
2856	unsigned char bootSect[512];	FILE *grubConf;
2857	char * boot;	char *line = NULL;
2858	char executable[] = "/boot/extlinux/extlinux";	size_t len = 0, res = 0;
2859
2860		grubConf = fopen(path, "r");
2861		if (!grubConf) {
2862		dbgPrintf("Could not open SuSE configuration file '%s'\n",
2863		path);
2864		return 0;
2865		}
2866
2867		while ((res = getline(&line, &len, grubConf)) != -1) {
2868		if (!strncmp(line, "setup", 5)) {
2869		fclose(grubConf);
2870		free(line);
2871		return 1;
2872		}
2873		}
2874
2875	printf("entered: checkForExtLinux()\n");	dbgPrintf("SuSE configuration file '%s' does not appear to be valid\n",
2876		path);
2877
2878	if (parseSysconfigGrub(NULL, &boot))	fclose(grubConf);
2879		free(line);
2880	return 0;	return 0;
2881		}
2882
2883	/* assume grub is not installed -- not an error condition */	int suseGrubConfGetLba(const char *path, int *lbaPtr)
2884	if (!boot)	{
2885	return 0;	FILE *grubConf;
2886		char *line = NULL;
2887		size_t res = 0, len = 0;
2888
2889	fd = open(executable, O_RDONLY);	if (!path)
2890	if (fd < 0)	return 1;
2891	/* this doesn't exist if grub hasn't been installed */	if (!lbaPtr)
2892	return 0;	return 1;
2893
2894	if (read(fd, bootSect, 512) != 512) {	grubConf = fopen(path, "r");
2895	fprintf(stderr, _("grubby: unable to read %s: %s\n"),	if (!grubConf)
2896	executable, strerror(errno));	return 1;
	return 1;
	}
	close(fd);
2897
2898	return checkDeviceBootloader(boot, bootSect);	while ((res = getline(&line, &len, grubConf)) != -1) {
2899	}	if (line[res - 1] == '\n')
2900		line[res - 1] = '\0';
2901		else if (len > res)
2902		line[res] = '\0';
2903		else {
2904		line = realloc(line, res + 1);
2905		line[res] = '\0';
2906		}
2907
2908	static char * getRootSpecifier(char * str) {	if (!strncmp(line, "setup", 5)) {
2909	char * idx, * rootspec = NULL;	if (strstr(line, "--force-lba")) {
2910		*lbaPtr = 1;
2911		} else {
2912		*lbaPtr = 0;
2913		}
2914		dbgPrintf("lba: %i\n", *lbaPtr);
2915		break;
2916		}
2917		}
2918
2919	if (*str == '(') {	free(line);
2920	idx = rootspec = strdup(str);	fclose(grubConf);
2921	while(*idx && (*idx != ')') && (!isspace(*idx))) idx++;	return 0;
	*(++idx) = '\0';
	}
	return rootspec;
2922	}	}
2923
2924	static char * getInitrdVal(struct grubConfig * config,	int suseGrubConfGetInstallDevice(const char *path, char **devicePtr)
2925	const char * prefix, struct singleLine *tmplLine,	{
2926	const char * newKernelInitrd,	FILE *grubConf;
2927	char ** extraInitrds, int extraInitrdCount)	char *line = NULL;
2928	{	size_t res = 0, len = 0;
2929	char *initrdVal, *end;	char *lastParamPtr = NULL;
2930	int i;	char *secLastParamPtr = NULL;
2931	size_t totalSize;	char installDeviceNumber = '\0';
2932	size_t prefixLen;	char *bounds = NULL;
	char separatorChar;
	prefixLen = strlen(prefix);
	totalSize = strlen(newKernelInitrd) - prefixLen + 1 /* \0 */;
	for (i = 0; i < extraInitrdCount; i++) {
	totalSize += sizeof(separatorChar);
	totalSize += strlen(extraInitrds[i]) - prefixLen;
	}
2933
2934	initrdVal = end = malloc(totalSize);	if (!path)
2935		return 1;
2936		if (!devicePtr)
2937		return 1;
2938
2939	end = stpcpy (end, newKernelInitrd + prefixLen);	grubConf = fopen(path, "r");
2940		if (!grubConf)
2941		return 1;
2942
2943	separatorChar = getKeywordByType(LT_INITRD, config->cfi)->separatorChar;	while ((res = getline(&line, &len, grubConf)) != -1) {
2944	for (i = 0; i < extraInitrdCount; i++) {	if (strncmp(line, "setup", 5))
2945	const char *extraInitrd;	continue;
2946	int j;
2947		if (line[res - 1] == '\n')
2948		line[res - 1] = '\0';
2949		else if (len > res)
2950		line[res] = '\0';
2951		else {
2952		line = realloc(line, res + 1);
2953		line[res] = '\0';
2954		}
2955
2956	extraInitrd = extraInitrds[i] + prefixLen;	lastParamPtr = bounds = line + res;
	/* Don't add entries that are already there */
	if (tmplLine != NULL) {
	for (j = 2; j < tmplLine->numElements; j++)
	if (strcmp(extraInitrd, tmplLine->elements[j].item) == 0)
	break;
2957
2958	if (j != tmplLine->numElements)	/* Last parameter in grub may be an optional IMAGE_DEVICE */
2959	continue;	while (!isspace(*lastParamPtr))
2960	}	lastParamPtr--;
2961		lastParamPtr++;
2962
2963		secLastParamPtr = lastParamPtr - 2;
2964		dbgPrintf("lastParamPtr: %s\n", lastParamPtr);
2965
2966		if (lastParamPtr + 3 > bounds) {
2967		dbgPrintf("lastParamPtr going over boundary");
2968		fclose(grubConf);
2969		free(line);
2970		return 1;
2971		}
2972		if (!strncmp(lastParamPtr, "(hd", 3))
2973		lastParamPtr += 3;
2974		dbgPrintf("lastParamPtr: %c\n", *lastParamPtr);
2975
2976		/*
2977		* Second last parameter will decide wether last parameter is
2978		* an IMAGE_DEVICE or INSTALL_DEVICE
2979		*/
2980		while (!isspace(*secLastParamPtr))
2981		secLastParamPtr--;
2982		secLastParamPtr++;
2983
2984		if (secLastParamPtr + 3 > bounds) {
2985		dbgPrintf("secLastParamPtr going over boundary");
2986		fclose(grubConf);
2987		free(line);
2988		return 1;
2989		}
2990		dbgPrintf("secLastParamPtr: %s\n", secLastParamPtr);
2991		if (!strncmp(secLastParamPtr, "(hd", 3)) {
2992		secLastParamPtr += 3;
2993		dbgPrintf("secLastParamPtr: %c\n", *secLastParamPtr);
2994		installDeviceNumber = *secLastParamPtr;
2995		} else {
2996		installDeviceNumber = *lastParamPtr;
2997		}
2998
2999	*end++ = separatorChar;	*devicePtr = malloc(6);
3000	end = stpcpy(end, extraInitrd);	snprintf(*devicePtr, 6, "(hd%c)", installDeviceNumber);
3001	}	dbgPrintf("installDeviceNumber: %c\n", installDeviceNumber);
3002		fclose(grubConf);
3003		free(line);
3004		return 0;
3005		}
3006
3007	return initrdVal;	free(line);
3008		fclose(grubConf);
3009		return 1;
3010	}	}
3011
3012	int addNewKernel(struct grubConfig * config, struct singleEntry * template,	int grubGetBootFromDeviceMap(const char *device, char **bootPtr)
3013	const char * prefix,	{
3014	char * newKernelPath, char * newKernelTitle,	FILE *deviceMap;
3015	char * newKernelArgs, char * newKernelInitrd,	char *line = NULL;
3016	char ** extraInitrds, int extraInitrdCount,	size_t res = 0, len = 0;
3017	char * newMBKernel, char * newMBKernelArgs) {	char *devicePtr;
3018	struct singleEntry * new;	char *bounds = NULL;
3019	struct singleLine * newLine = NULL, * tmplLine = NULL, * masterLine = NULL;	const char *path;
3020	int needs;	const static char default_path[] = "/boot/grub/device.map";
	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;
3021
3022	sprintf(buf, "TITLE=%.*s", config->cfi->maxTitleLength, newKernelTitle);	if (!device)
3023	while (findEntryByPath(config, buf, NULL, NULL)) {	return 1;
3024	sprintf(numBuf, "%d", i++);	if (!bootPtr)
3025	strcpy(buf + strlen(buf) - strlen(numBuf), numBuf);	return 1;
	}
3026
3027	newKernelTitle = buf + 6;	if ((path = getenv("GRUBBY_GRUB_DEVICE_MAP")) == NULL)
3028	}	path = default_path;
3029
3030	new = malloc(sizeof(*new));	dbgPrintf("opening grub device.map file from: %s\n", path);
3031	new->skip = 0;	deviceMap = fopen(path, "r");
3032	new->multiboot = 0;	if (!deviceMap)
3033	new->next = config->entries;	return 1;
	new->lines = NULL;
	config->entries = new;
	/* copy/update from the template */
	needs = NEED_KERNEL | NEED_TITLE;
	if (newKernelInitrd)
	needs |= NEED_INITRD;
	if (newMBKernel) {
	needs |= NEED_MB;
	new->multiboot = 1;
	}
3034
3035	if (template) {	while ((res = getline(&line, &len, deviceMap)) != -1) {
3036	for (masterLine = template->lines;	if (!strncmp(line, "#", 1))
3037	masterLine && (tmplLine = lineDup(masterLine));	continue;
3038	lineFree(tmplLine), masterLine = masterLine->next)
3039	{	if (line[res - 1] == '\n')
3040	dbgPrintf("addNewKernel processing %d\n", tmplLine->type);	line[res - 1] = '\0';
3041		else if (len > res)
3042	/* skip comments */	line[res] = '\0';
3043	chptr = tmplLine->indent;	else {
3044	while (*chptr && isspace(*chptr)) chptr++;	line = realloc(line, res + 1);
3045	if (*chptr == '#') continue;	line[res] = '\0';
	if (tmplLine->type == LT_KERNEL &&
	tmplLine->numElements >= 2) {
	if (!template->multiboot && (needs & NEED_MB)) {
	/* it's not a multiboot template and this is the kernel
	* line.  Try to be intelligent about inserting the
	* hypervisor at the same time.
	*/
	if (config->cfi->mbHyperFirst) {
	/* insert the hypervisor first */
	newLine = addLine(new, config->cfi, LT_HYPER,
	tmplLine->indent,
	newMBKernel + strlen(prefix));
	/* set up for adding the kernel line */
	free(tmplLine->indent);
	tmplLine->indent = strdup(config->secondaryIndent);
	needs &= ~NEED_MB;
	}
	if (needs & NEED_KERNEL) {
	/* use addLineTmpl to preserve line elements,
	* otherwise we could just call addLine.  Unfortunately
	* this means making some changes to the template
	* such as the indent change above and the type
	* change below.
	*/
	struct keywordTypes * mbm_kw =
	getKeywordByType(LT_MBMODULE, config->cfi);
	if (mbm_kw) {
	tmplLine->type = LT_MBMODULE;
	free(tmplLine->elements[0].item);
	tmplLine->elements[0].item = strdup(mbm_kw->key);
	}
	newLine = addLineTmpl(new, tmplLine, newLine,
	newKernelPath + strlen(prefix), config->cfi);
	needs &= ~NEED_KERNEL;
	}
	if (needs & NEED_MB) { /* !mbHyperFirst */
	newLine = addLine(new, config->cfi, LT_HYPER,
	config->secondaryIndent,
	newMBKernel + strlen(prefix));
	needs &= ~NEED_MB;
	}
	} else if (needs & NEED_KERNEL) {
	newLine = addLineTmpl(new, tmplLine, newLine,
	newKernelPath + strlen(prefix), config->cfi);
	needs &= ~NEED_KERNEL;
	}
	} else if (tmplLine->type == LT_HYPER &&
	tmplLine->numElements >= 2) {
	if (needs & NEED_MB) {
	newLine = addLineTmpl(new, tmplLine, newLine,
	newMBKernel + strlen(prefix), config->cfi);
	needs &= ~NEED_MB;
	}
	} else if (tmplLine->type == LT_MBMODULE &&
	tmplLine->numElements >= 2) {
	if (new->multiboot) {
	if (needs & NEED_KERNEL) {
	newLine = addLineTmpl(new, tmplLine, newLine,
	newKernelPath +
	strlen(prefix), config->cfi);
	needs &= ~NEED_KERNEL;
	} else if (config->cfi->mbInitRdIsModule &&
	(needs & NEED_INITRD)) {
	char *initrdVal;
	initrdVal = getInitrdVal(config, prefix, tmplLine,
	newKernelInitrd, extraInitrds,
	extraInitrdCount);
	newLine = addLineTmpl(new, tmplLine, newLine,
	initrdVal, config->cfi);
	free(initrdVal);
	needs &= ~NEED_INITRD;
	}
	} else if (needs & NEED_KERNEL) {
	/* template is multi but new is not,
	* insert the kernel in the first module slot
	*/
	tmplLine->type = LT_KERNEL;
	free(tmplLine->elements[0].item);
	tmplLine->elements[0].item =
	strdup(getKeywordByType(LT_KERNEL, config->cfi)->key);
	newLine = addLineTmpl(new, tmplLine, newLine,
	newKernelPath + strlen(prefix), config->cfi);
	needs &= ~NEED_KERNEL;
	} else if (needs & NEED_INITRD) {
	char *initrdVal;
	/* template is multi but new is not,
	* insert the initrd in the second module slot
	*/
	tmplLine->type = LT_INITRD;
	free(tmplLine->elements[0].item);
	tmplLine->elements[0].item =
	strdup(getKeywordByType(LT_INITRD, config->cfi)->key);
	initrdVal = getInitrdVal(config, prefix, tmplLine, newKernelInitrd, extraInitrds, extraInitrdCount);
	newLine = addLineTmpl(new, tmplLine, newLine, initrdVal, config->cfi);
	free(initrdVal);
	needs &= ~NEED_INITRD;
	}
	} else if (tmplLine->type == LT_INITRD &&
	tmplLine->numElements >= 2) {
	if (needs & NEED_INITRD &&
	new->multiboot && !template->multiboot &&
	config->cfi->mbInitRdIsModule) {
	/* make sure we don't insert the module initrd
	* before the module kernel... if we don't do it here,
	* it will be inserted following the template.
	*/
	if (!needs & NEED_KERNEL) {
	char *initrdVal;
	initrdVal = getInitrdVal(config, prefix, tmplLine, newKernelInitrd, extraInitrds, extraInitrdCount);
	newLine = addLine(new, config->cfi, LT_MBMODULE,
	config->secondaryIndent,
	initrdVal);
	free(initrdVal);
	needs &= ~NEED_INITRD;
	}
	} else if (needs & NEED_INITRD) {
	char *initrdVal;
	initrdVal = getInitrdVal(config, prefix, tmplLine, newKernelInitrd, extraInitrds, extraInitrdCount);
	newLine = addLineTmpl(new, tmplLine, newLine, initrdVal, config->cfi);
	free(initrdVal);
	needs &= ~NEED_INITRD;
	}
	} else if (tmplLine->type == LT_TITLE &&
	(needs & NEED_TITLE)) {
	if (tmplLine->numElements >= 2) {
	newLine = addLineTmpl(new, tmplLine, newLine,
	newKernelTitle, config->cfi);
	needs &= ~NEED_TITLE;
	} else if (tmplLine->numElements == 1 &&
	config->cfi->titleBracketed) {
	/* addLineTmpl doesn't handle titleBracketed */
	newLine = addLine(new, config->cfi, LT_TITLE,
	tmplLine->indent, newKernelTitle);
	needs &= ~NEED_TITLE;
	}
	} else {
	/* pass through other lines from the template */
	newLine = addLineTmpl(new, tmplLine, newLine, NULL, config->cfi);
	}
	}
	} else {
	/* don't have a template, so start the entry with the
	* appropriate starting line
	*/
	switch (config->cfi->entryStart) {
	case LT_KERNEL:
	if (new->multiboot && config->cfi->mbHyperFirst) {
	/* fall through to LT_HYPER */
	} else {
	newLine = addLine(new, config->cfi, LT_KERNEL,
	config->primaryIndent,
	newKernelPath + strlen(prefix));
	needs &= ~NEED_KERNEL;
	break;
3046	}	}
3047
3048	case LT_HYPER:	devicePtr = line;
3049	newLine = addLine(new, config->cfi, LT_HYPER,	bounds = line + res;
	config->primaryIndent,
	newMBKernel + strlen(prefix));
	needs &= ~NEED_MB;
	break;
3050
3051	case LT_TITLE:	while ((isspace(*line) && ((devicePtr + 1) <= bounds)))
3052	if( useextlinuxmenu != 0 ){ // We just need useextlinuxmenu to not be zero (set above)	devicePtr++;
3053	char * templabel;	dbgPrintf("device: %s\n", devicePtr);
3054	int x = 0, y = 0;
3055		if (!strncmp(devicePtr, device, strlen(device))) {
3056	templabel = strdup(newKernelTitle);	devicePtr += strlen(device);
3057	while( templabel[x]){	while (isspace(*devicePtr)
3058	if( templabel[x] == ' ' ){	&& ((devicePtr + 1) <= bounds))
3059	y = x;	devicePtr++;
	while( templabel[y] ){
	templabel[y] = templabel[y+1];
	y++;
	}
	}
	x++;
	}
	newLine = addLine(new, config->cfi, LT_TITLE,
	config->primaryIndent, templabel);
	free(templabel);
	}else{
	newLine = addLine(new, config->cfi, LT_TITLE,
	config->primaryIndent, newKernelTitle);
	}
	needs &= ~NEED_TITLE;
	break;
3060
3061	default:	*bootPtr = strdup(devicePtr);
3062	abort();	break;
3063		}
3064	}	}
	}
3065
3066	/* add the remainder of the lines, i.e. those that either	free(line);
3067	* weren't present in the template, or in the case of no template,	fclose(deviceMap);
3068	* all the lines following the entryStart.	return 0;
3069	*/	}
	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;
	}
3070
3071	if (needs) {	int suseGrubConfGetBoot(const char *path, char **bootPtr)
3072	printf(_("grubby: needs=%d, aborting\n"), needs);	{
3073	abort();	char *grubDevice;
	}
3074
3075	if (updateImage(config, "0", prefix, newKernelArgs, NULL,	if (suseGrubConfGetInstallDevice(path, &grubDevice))
3076	newMBKernelArgs, NULL)) return 1;	dbgPrintf("error looking for grub installation device\n");
3077		else
3078		dbgPrintf("grubby installation device: %s\n", grubDevice);
3079
3080	return 0;	if (grubGetBootFromDeviceMap(grubDevice, bootPtr))
3081		dbgPrintf("error looking for grub boot device\n");
3082		else
3083		dbgPrintf("grubby boot device: %s\n", *bootPtr);
3084
3085		free(grubDevice);
3086		return 0;
3087	}	}
3088
3089	static void traceback(int signum)	int parseSuseGrubConf(int *lbaPtr, char **bootPtr)
3090	{	{
3091	void *array[40];	/*
3092	size_t size;	* This SuSE grub configuration file at this location is not your
3093		* average grub configuration file, but instead the grub commands
3094		* used to setup grub on that system.
3095		*/
3096		const char *path;
3097		const static char default_path[] = "/etc/grub.conf";
3098
3099	signal(SIGSEGV, SIG_DFL);	if ((path = getenv("GRUBBY_SUSE_GRUB_CONF")) == NULL)
3100	memset(array, '\0', sizeof (array));	path = default_path;
3101	size = backtrace(array, 40);
3102		if (!isSuseGrubConf(path))
	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);
3103	return 1;	return 1;
3104	}
3105	break;	if (lbaPtr) {
3106		*lbaPtr = 0;
3107		if (suseGrubConfGetLba(path, lbaPtr))
3108		return 1;
3109	}	}
	}
3110
3111	if (arg < -1) {	if (bootPtr) {
3112	fprintf(stderr, _("grubby: bad argument %s: %s\n"),	*bootPtr = NULL;
3113	poptBadOption(optCon, POPT_BADOPTION_NOALIAS),	suseGrubConfGetBoot(path, bootPtr);
3114	poptStrerror(arg));	}
	return 1;
	}
3115
3116	if ((chptr = poptGetArg(optCon))) {	return 0;
3117	fprintf(stderr, _("grubby: unexpected argument %s\n"), chptr);	}
	return 1;
	}
3118
3119	if ((configureLilo + configureGrub + configureELilo +	int parseSysconfigGrub(int *lbaPtr, char **bootPtr)
3120	configureYaboot + configureSilo + configureZipl +	{
3121	configureExtLinux ) > 1) {	FILE *in;
3122	fprintf(stderr, _("grubby: cannot specify multiple bootloaders\n"));	char buf[1024];
3123	return 1;	char *chptr;
3124	} else if (bootloaderProbe && grubConfig) {	char *start;
3125	fprintf(stderr,	char *param;
	_("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;
	}
3126
3127	if (!cfi) {	in = fopen("/etc/sysconfig/grub", "r");
3128	#ifdef __ia64__	if (!in)
3129	cfi = &eliloConfigType;	return 1;
	#elif __powerpc__
	cfi = &yabootConfigType;
	#elif __sparc__
	cfi = &siloConfigType;
	#elif __s390__
	cfi = &ziplConfigType;
	#elif __s390x__
	cfi = &ziplConfigtype;
	#else
	cfi = &grubConfigType;
	#endif
	}
3130
3131	if (!grubConfig)	if (lbaPtr)
3132	grubConfig = cfi->defaultConfig;	*lbaPtr = 0;
3133		if (bootPtr)
3134		*bootPtr = NULL;
3135
3136		while (fgets(buf, sizeof(buf), in)) {
3137		start = buf;
3138		while (isspace(*start))
3139		start++;
3140		if (*start == '#')
3141		continue;
3142
3143		chptr = strchr(start, '=');
3144		if (!chptr)
3145		continue;
3146		chptr--;
3147		while (*chptr && isspace(*chptr))
3148		chptr--;
3149		chptr++;
3150		*chptr = '\0';
3151
3152		param = chptr + 1;
3153		while (*param && isspace(*param))
3154		param++;
3155		if (*param == '=') {
3156		param++;
3157		while (*param && isspace(*param))
3158		param++;
3159		}
3160
3161	if (bootloaderProbe && (displayDefault || kernelInfo || newKernelVersion ||	chptr = param;
3162	newKernelPath || removeKernelPath || makeDefault ||	while (*chptr && !isspace(*chptr))
3163	defaultKernel)) {	chptr++;
3164	fprintf(stderr, _("grubby: --bootloader-probe may not be used with "	*chptr = '\0';
3165	"specified option"));
3166	return 1;	if (!strcmp(start, "forcelba") && !strcmp(param, "1") && lbaPtr)
3167	}	*lbaPtr = 1;
3168		else if (!strcmp(start, "boot") && bootPtr)
3169		*bootPtr = strdup(param);
3170		}
3171
3172	if ((displayDefault || kernelInfo) && (newKernelVersion || newKernelPath ||	fclose(in);
	removeKernelPath)) {
	fprintf(stderr, _("grubby: --default-kernel and --info may not "
	"be used when adding or removing kernels\n"));
	return 1;
	}
3173
3174	if (newKernelPath && !newKernelTitle) {	return 0;
3175	fprintf(stderr, _("grubby: kernel title must be specified\n"));	}
	return 1;
	} else if (!newKernelPath && (newKernelTitle  || copyDefault ||
	(newKernelInitrd && !updateKernelPath)||
	makeDefault || extraInitrdCount > 0)) {
	fprintf(stderr, _("grubby: kernel path expected\n"));
	return 1;
	}
3176
3177	if (newKernelPath && updateKernelPath) {	void dumpSysconfigGrub(void)
3178	fprintf(stderr, _("grubby: --add-kernel and --update-kernel may"	{
3179	"not be used together"));	char *boot = NULL;
3180	return 1;	int lba;
	}
3181
3182	if (makeDefault && defaultKernel) {	if (isSuseSystem()) {
3183	fprintf(stderr, _("grubby: --make-default and --default-kernel "	if (parseSuseGrubConf(&lba, &boot)) {
3184	"may not be used together\n"));	free(boot);
3185	return 1;	return;
3186	} else if (defaultKernel && removeKernelPath &&	}
3187	!strcmp(defaultKernel, removeKernelPath)) {	} else {
3188	fprintf(stderr, _("grubby: cannot make removed kernel the default\n"));	if (parseSysconfigGrub(&lba, &boot)) {
3189	return 1;	free(boot);
3190	} else if (defaultKernel && newKernelPath &&	return;
3191	!strcmp(defaultKernel, newKernelPath)) {	}
3192	makeDefault = 1;	}
	defaultKernel = NULL;
	}
3193
3194	if (!strcmp(grubConfig, "-") && !outputFile) {	if (lba)
3195	fprintf(stderr, _("grubby: output file must be specified if stdin "	printf("lba\n");
3196	"is used\n"));	if (boot) {
3197	return 1;	printf("boot=%s\n", boot);
3198	}	free(boot);
3199		}
3200		}
3201
3202	if (!removeKernelPath && !newKernelPath && !displayDefault && !defaultKernel	int displayInfo(struct grubConfig *config, char *kernel, const char *prefix)
3203	&& !kernelInfo && !bootloaderProbe && !updateKernelPath	{
3204	&& !removeMBKernel) {	int i = 0;
3205	fprintf(stderr, _("grubby: no action specified\n"));	struct singleEntry *entry;
3206	return 1;	struct singleLine *line;
3207	}
3208		entry = findEntryByPath(config, kernel, prefix, &i);
3209		if (!entry) {
3210		fprintf(stderr, _("grubby: kernel not found\n"));
3211		return 1;
3212		}
3213
3214	flags |= badImageOkay ? GRUBBY_BADIMAGE_OKAY : 0;	/* this is a horrible hack to support /etc/sysconfig/grub; there must
3215		be a better way */
3216		if (config->cfi == &grubConfigType) {
3217		dumpSysconfigGrub();
3218		} else {
3219		line = getLineByType(LT_BOOT, config->theLines);
3220		if (line && line->numElements >= 1) {
3221		printf("boot=%s\n", line->elements[1].item);
3222		}
3223
3224	if (cfi->needsBootPrefix) {	line = getLineByType(LT_LBA, config->theLines);
3225	if (!bootPrefix) {	if (line)
3226	bootPrefix = findBootPrefix();	printf("lba\n");
	if (!bootPrefix) return 1;
	} else {
	/* this shouldn't end with a / */
	if (bootPrefix[strlen(bootPrefix) - 1] == '/')
	bootPrefix[strlen(bootPrefix) - 1] = '\0';
3227	}	}
	} else {
	bootPrefix = "";
	}
3228
3229	if (!cfi->mbAllowExtraInitRds &&	displayEntry(config, entry, prefix, i);
	extraInitrdCount > 0) {
	fprintf(stderr, _("grubby: %s doesn't allow multiple initrds\n"), cfi->defaultConfig);
	return 1;
	}
3230
3231	if (bootloaderProbe) {	i++;
3232	int lrc = 0, grc = 0, erc = 0;	while ((entry = findEntryByPath(config, kernel, prefix, &i))) {
3233	struct grubConfig * lconfig, * gconfig;	displayEntry(config, entry, prefix, i);
3234		i++;
3235	if (!access(grubConfigType.defaultConfig, F_OK)) {	}
	gconfig = readConfig(grubConfigType.defaultConfig, &grubConfigType);
	if (!gconfig)
	grc = 1;
	else
	grc = checkForGrub(gconfig);
	}
	if (!access(liloConfigType.defaultConfig, F_OK)) {
	lconfig = readConfig(liloConfigType.defaultConfig, &liloConfigType);
	if (!lconfig)
	lrc = 1;
	else
	lrc = checkForLilo(lconfig);
	}
	if (!access(extlinuxConfigType.defaultConfig, F_OK)) {
	lconfig = readConfig(extlinuxConfigType.defaultConfig, &extlinuxConfigType);
	if (!lconfig)
	erc = 1;
	else
	erc = checkForExtLinux(lconfig);
	}
	if (lrc == 1 || grc == 1) return 1;
	if (lrc == 2) printf("lilo\n");
	if (grc == 2) printf("grub\n");
	if (erc == 2) printf("extlinux\n");
3236
3237	return 0;	return 0;
3238	}	}
3239
3240	config = readConfig(grubConfig, cfi);	struct singleLine *addLineTmpl(struct singleEntry *entry,
3241	if (!config) return 1;	struct singleLine *tmplLine,
3242		struct singleLine *prevLine,
3243		const char *val, struct configFileInfo *cfi)
3244		{
3245		struct singleLine *newLine = lineDup(tmplLine);
3246
3247	if (displayDefault) {	if (isEfi && cfi == &grub2ConfigType) {
3248	struct singleLine * line;	enum lineType_e old = newLine->type;
3249	struct singleEntry * entry;	newLine->type = preferredLineType(newLine->type, cfi);
3250	char * rootspec;	if (old != newLine->type)
3251		newLine->elements[0].item =
3252	if (config->defaultImage == -1) return 0;	getKeyByType(newLine->type, cfi);
3253	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));
3254
3255	return 0;	if (val) {
3256	} else if (kernelInfo)	/* override the inherited value with our own.
3257	return displayInfo(config, kernelInfo, bootPrefix);	* This is a little weak because it only applies to elements[1]
3258		*/
3259		if (newLine->numElements > 1)
3260		removeElement(newLine, 1);
3261		insertElement(newLine, val, 1, cfi);
3262
3263		/* but try to keep the rootspec from the template... sigh */
3264		if (tmplLine->
3265		type & (LT_HYPER | LT_KERNEL | LT_MBMODULE | LT_INITRD |
3266		LT_KERNEL_EFI | LT_INITRD_EFI | LT_KERNEL_16 |
3267		LT_INITRD_16)) {
3268		size_t rs = getRootSpecifier(tmplLine->elements[1].item);
3269		if (rs > 0) {
3270		free(newLine->elements[1].item);
3271		newLine->elements[1].item = sdupprintf(
3272		"%.*s%s", (int) rs,
3273		tmplLine->elements[1].item, val);
3274		}
3275		}
3276		}
3277
3278	if (copyDefault) {	dbgPrintf("addLineTmpl(%s)\n", newLine->numElements ?
3279	template = findTemplate(config, bootPrefix, NULL, 0, flags);	newLine->elements[0].item : "");
	if (!template) return 1;
	}
3280
3281	markRemovedImage(config, removeKernelPath, bootPrefix);	if (!entry->lines) {
3282	markRemovedImage(config, removeMBKernel, bootPrefix);	/* first one on the list */
3283	setDefaultImage(config, newKernelPath != NULL, defaultKernel, makeDefault,	entry->lines = newLine;
3284	bootPrefix, flags);	} else if (prevLine) {
3285	setFallbackImage(config, newKernelPath != NULL);	/* add after prevLine */
3286	if (updateImage(config, updateKernelPath, bootPrefix, newKernelArgs,	newLine->next = prevLine->next;
3287	removeArgs, newMBKernelArgs, removeMBKernelArgs)) return 1;	prevLine->next = newLine;
3288	if (updateKernelPath && newKernelInitrd) {	}
3289	if (updateInitrd(config, updateKernelPath, bootPrefix,
3290	newKernelInitrd)) return 1;	return newLine;
3291	}	}
3292	if (addNewKernel(config, template, bootPrefix, newKernelPath,
3293	newKernelTitle, newKernelArgs, newKernelInitrd,	/* val may be NULL */
3294	extraInitrds, extraInitrdCount,	struct singleLine *addLine(struct singleEntry *entry,
3295	newMBKernel, newMBKernelArgs)) return 1;	struct configFileInfo *cfi,
3296		enum lineType_e type, char *defaultIndent,
3297		const char *val)
3298	if (numEntries(config) == 0) {	{
3299	fprintf(stderr, _("grubby: doing this would leave no kernel entries. "	struct singleLine *line, *prev;
3300	"Not writing out new config.\n"));	struct keywordTypes *kw;
3301	return 1;	struct singleLine tmpl;
3302	}
3303		/* NB: This function shouldn't allocate items on the heap, rather on
3304		* the stack since it calls addLineTmpl which will make copies.
3305		*/
3306		if (type == LT_TITLE && cfi->titleBracketed) {
3307		/* we're doing a bracketed title (zipl) */
3308		tmpl.type = type;
3309		tmpl.numElements = 1;
3310		tmpl.elements = alloca(sizeof(*tmpl.elements));
3311		tmpl.elements[0].item = alloca(strlen(val) + 3);
3312		sprintf(tmpl.elements[0].item, "[%s]", val);
3313		tmpl.elements[0].indent = "";
3314		val = NULL;
3315		} else if (type == LT_MENUENTRY) {
3316		char *lineend = "--class gnu-linux --class gnu --class os {";
3317		if (!val) {
3318		fprintf(stderr,
3319		"Line type LT_MENUENTRY requires a value\n");
3320		abort();
3321		}
3322		kw = getKeywordByType(type, cfi);
3323		if (!kw) {
3324		fprintf(stderr,
3325		"Looking up keyword for unknown type %d\n",
3326		type);
3327		abort();
3328		}
3329		tmpl.indent = "";
3330		tmpl.type = type;
3331		tmpl.numElements = 3;
3332		tmpl.elements =
3333		alloca(sizeof(*tmpl.elements) * tmpl.numElements);
3334		tmpl.elements[0].item = kw->key;
3335		tmpl.elements[0].indent = alloca(2);
3336		sprintf(tmpl.elements[0].indent, "%c", kw->nextChar);
3337		tmpl.elements[1].item = (char *)val;
3338		tmpl.elements[1].indent = alloca(2);
3339		sprintf(tmpl.elements[1].indent, "%c", kw->nextChar);
3340		tmpl.elements[2].item = alloca(strlen(lineend) + 1);
3341		strcpy(tmpl.elements[2].item, lineend);
3342		tmpl.elements[2].indent = "";
3343		} else {
3344		kw = getKeywordByType(type, cfi);
3345		if (!kw) {
3346		fprintf(stderr,
3347		"Looking up keyword for unknown type %d\n",
3348		type);
3349		abort();
3350		}
3351		tmpl.type = type;
3352		tmpl.numElements = val ? 2 : 1;
3353		tmpl.elements =
3354		alloca(sizeof(*tmpl.elements) * tmpl.numElements);
3355		tmpl.elements[0].item = kw->key;
3356		tmpl.elements[0].indent = alloca(2);
3357		sprintf(tmpl.elements[0].indent, "%c", kw->nextChar);
3358		if (val) {
3359		tmpl.elements[1].item = (char *)val;
3360		tmpl.elements[1].indent = "";
3361		}
3362		}
3363
3364		/* The last non-empty line gives us the indention to us and the line
3365		* to insert after. Note that comments are considered empty lines,
3366		* which may not be ideal? If there are no lines or we are looking at
3367		* the first line, we use defaultIndent (the first line is normally
3368		* indented differently from the rest) */
3369		for (line = entry->lines, prev = NULL; line; line = line->next) {
3370		if (line->numElements)
3371		prev = line;
3372		/* fall back on the last line if prev isn't otherwise set */
3373		if (!line->next && !prev)
3374		prev = line;
3375		}
3376
3377		struct singleLine *menuEntry;
3378		menuEntry = getLineByType(LT_MENUENTRY, entry->lines);
3379		if (tmpl.type == LT_ENTRY_END) {
3380		if (menuEntry)
3381		tmpl.indent = menuEntry->indent;
3382		else
3383		tmpl.indent = defaultIndent ? : "";
3384		} else if (tmpl.type != LT_MENUENTRY) {
3385		if (menuEntry)
3386		tmpl.indent = "\t";
3387		else if (prev == entry->lines)
3388		tmpl.indent = defaultIndent ? : "";
3389		else
3390		tmpl.indent = prev->indent;
3391		}
3392
3393		return addLineTmpl(entry, &tmpl, prev, val, cfi);
3394		}
3395
3396		void removeLine(struct singleEntry *entry, struct singleLine *line)
3397		{
3398		struct singleLine *prev;
3399		int i;
3400
3401		for (i = 0; i < line->numElements; i++) {
3402		free(line->elements[i].item);
3403		free(line->elements[i].indent);
3404		}
3405		free(line->elements);
3406		free(line->indent);
3407
3408		if (line == entry->lines) {
3409		entry->lines = line->next;
3410		} else {
3411		prev = entry->lines;
3412		while (prev->next != line)
3413		prev = prev->next;
3414		prev->next = line->next;
3415		}
3416
3417		free(line);
3418		}
3419
3420		static void requote(struct singleLine *tmplLine, struct configFileInfo *cfi)
3421		{
3422		struct singleLine newLine = {
3423		.indent = tmplLine->indent,
3424		.type = tmplLine->type,
3425		.next = tmplLine->next,
3426		};
3427		int firstQuotedItem = -1;
3428		int quoteLen = 0;
3429		int j;
3430		int element = 0;
3431		char *c;
3432
3433		c = malloc(strlen(tmplLine->elements[0].item) + 1);
3434		strcpy(c, tmplLine->elements[0].item);
3435		insertElement(&newLine, c, element++, cfi);
3436		free(c);
3437		c = NULL;
3438
3439		for (j = 1; j < tmplLine->numElements; j++) {
3440		if (firstQuotedItem == -1) {
3441		quoteLen += strlen(tmplLine->elements[j].item);
3442
3443		if (isquote(tmplLine->elements[j].item[0])) {
3444		firstQuotedItem = j;
3445		quoteLen +=
3446		strlen(tmplLine->elements[j].indent);
3447		} else {
3448		c = malloc(quoteLen + 1);
3449		strcpy(c, tmplLine->elements[j].item);
3450		insertElement(&newLine, c, element++, cfi);
3451		free(c);
3452		quoteLen = 0;
3453		}
3454		} else {
3455		int itemlen = strlen(tmplLine->elements[j].item);
3456		quoteLen += itemlen;
3457		quoteLen += strlen(tmplLine->elements[j].indent);
3458
3459		if (isquote(tmplLine->elements[j].item[itemlen - 1])) {
3460		c = malloc(quoteLen + 1);
3461		c[0] = '\0';
3462		for (int i = firstQuotedItem; i < j + 1; i++) {
3463		strcat(c, tmplLine->elements[i].item);
3464		strcat(c, tmplLine->elements[i].indent);
3465		}
3466		insertElement(&newLine, c, element++, cfi);
3467		free(c);
3468
3469		firstQuotedItem = -1;
3470		quoteLen = 0;
3471		}
3472		}
3473		}
3474		while (tmplLine->numElements)
3475		removeElement(tmplLine, 0);
3476		if (tmplLine->elements)
3477		free(tmplLine->elements);
3478
3479		tmplLine->numElements = newLine.numElements;
3480		tmplLine->elements = newLine.elements;
3481		}
3482
3483		static void insertElement(struct singleLine *line,
3484		const char *item, int insertHere,
3485		struct configFileInfo *cfi)
3486		{
3487		struct keywordTypes *kw;
3488		char indent[2] = "";
3489
3490		/* sanity check */
3491		if (insertHere > line->numElements) {
3492		dbgPrintf
3493		("insertElement() adjusting insertHere from %d to %d\n",
3494		insertHere, line->numElements);
3495		insertHere = line->numElements;
3496		}
3497
3498		line->elements = realloc(line->elements, (line->numElements + 1) *
3499		sizeof(*line->elements));
3500		memmove(&line->elements[insertHere + 1],
3501		&line->elements[insertHere],
3502		(line->numElements - insertHere) * sizeof(*line->elements));
3503		line->elements[insertHere].item = strdup(item);
3504
3505		kw = getKeywordByType(line->type, cfi);
3506
3507		if (line->numElements == 0) {
3508		indent[0] = '\0';
3509		} else if (insertHere == 0) {
3510		indent[0] = kw->nextChar;
3511		} else if (kw->separatorChar != '\0') {
3512		indent[0] = kw->separatorChar;
3513		} else {
3514		indent[0] = ' ';
3515		}
3516
3517		if (insertHere > 0 && line->elements[insertHere - 1].indent[0] == '\0') {
3518		/* move the end-of-line forward */
3519		line->elements[insertHere].indent =
3520		line->elements[insertHere - 1].indent;
3521		line->elements[insertHere - 1].indent = strdup(indent);
3522		} else {
3523		line->elements[insertHere].indent = strdup(indent);
3524		}
3525
3526		line->numElements++;
3527
3528		dbgPrintf("insertElement(%s, '%s%s', %d)\n",
3529		line->elements[0].item,
3530		line->elements[insertHere].item,
3531		line->elements[insertHere].indent, insertHere);
3532		}
3533
3534		static void removeElement(struct singleLine *line, int removeHere)
3535		{
3536		int i;
3537
3538		/* sanity check */
3539		if (removeHere >= line->numElements)
3540		return;
3541
3542		dbgPrintf("removeElement(%s, %d:%s)\n", line->elements[0].item,
3543		removeHere, line->elements[removeHere].item);
3544
3545		free(line->elements[removeHere].item);
3546
3547		if (removeHere > 1) {
3548		/* previous argument gets this argument's post-indentation */
3549		free(line->elements[removeHere - 1].indent);
3550		line->elements[removeHere - 1].indent =
3551		line->elements[removeHere].indent;
3552		} else {
3553		free(line->elements[removeHere].indent);
3554		}
3555
3556		/* now collapse the array, but don't bother to realloc smaller */
3557		for (i = removeHere; i < line->numElements - 1; i++)
3558		line->elements[i] = line->elements[i + 1];
3559
3560		line->numElements--;
3561		}
3562
3563		static int argNameMatch(const char *one, const char *two)
3564		{
3565		char *first, *second;
3566		char *chptra, *chptrb;
3567		int rc;
3568
3569		first = strcpy(alloca(strlen(one) + 1), one);
3570		second = strcpy(alloca(strlen(two) + 1), two);
3571
3572		chptra = strchr(first, '=');
3573		if (chptra)
3574		*chptra = '\0';
3575
3576		chptrb = strchr(second, '=');
3577		if (chptrb)
3578		*chptrb = '\0';
3579
3580		rc = strcmp(first, second);
3581
3582		if (chptra)
3583		*chptra = '=';
3584		if (chptrb)
3585		*chptrb = '=';
3586
3587		return rc;
3588		}
3589
3590		static int argHasValue(const char *arg)
3591		{
3592		char *chptr;
3593
3594		chptr = strchr(arg, '=');
3595		if (chptr)
3596		return 1;
3597		return 0;
3598		}
3599
3600		static int argValueMatch(const char *one, const char *two)
3601		{
3602		char *first, *second;
3603		char *chptra, *chptrb;
3604
3605		first = strcpy(alloca(strlen(one) + 1), one);
3606		second = strcpy(alloca(strlen(two) + 1), two);
3607
3608		chptra = strchr(first, '=');
3609		if (chptra)
3610		chptra += 1;
3611
3612		chptrb = strchr(second, '=');
3613		if (chptrb)
3614		chptrb += 1;
3615
3616		if (!chptra && !chptrb)
3617		return 0;
3618		else if (!chptra)
3619		return *chptrb - 0;
3620		else if (!chptrb)
3621		return 0 - *chptra;
3622		else
3623		return strcmp(chptra, chptrb);
3624		}
3625
3626		int updateActualImage(struct grubConfig *cfg, const char *image,
3627		const char *prefix, const char *addArgs,
3628		const char *removeArgs, int multibootArgs)
3629		{
3630		struct singleEntry *entry;
3631		struct singleLine *line, *rootLine;
3632		int index = 0;
3633		int i, k;
3634		const char **newArgs, **oldArgs;
3635		const char **arg;
3636		int useKernelArgs, useRoot;
3637		int firstElement;
3638		int *usedElements;
3639		int doreplace;
3640
3641		if (!image)
3642		return 0;
3643
3644		if (!addArgs) {
3645		newArgs = malloc(sizeof(*newArgs));
3646		*newArgs = NULL;
3647		} else {
3648		if (poptParseArgvString(addArgs, NULL, &newArgs)) {
3649		fprintf(stderr,
3650		_("grubby: error separating arguments '%s'\n"),
3651		addArgs);
3652		return 1;
3653		}
3654		}
3655
3656		if (!removeArgs) {
3657		oldArgs = malloc(sizeof(*oldArgs));
3658		*oldArgs = NULL;
3659		} else {
3660		if (poptParseArgvString(removeArgs, NULL, &oldArgs)) {
3661		fprintf(stderr,
3662		_("grubby: error separating arguments '%s'\n"),
3663		removeArgs);
3664		free(newArgs);
3665		return 1;
3666		}
3667		}
3668
3669		useKernelArgs = (getKeywordByType(LT_KERNELARGS, cfg->cfi)
3670		&& (!multibootArgs || cfg->cfi->mbConcatArgs));
3671
3672		useRoot = (getKeywordByType(LT_ROOT, cfg->cfi)
3673		&& !multibootArgs);
3674
3675		for (; (entry = findEntryByPath(cfg, image, prefix, &index)); index++) {
3676
3677		if (multibootArgs && !entry->multiboot)
3678		continue;
3679
3680		/* Determine where to put the args.  If this config supports
3681		* LT_KERNELARGS, use that.  Otherwise use
3682		* LT_HYPER/LT_KERNEL/LT_MBMODULE lines.
3683		*/
3684		if (useKernelArgs) {
3685		line = getLineByType(LT_KERNELARGS, entry->lines);
3686		if (!line) {
3687		/* no LT_KERNELARGS, need to add it */
3688		line = addLine(entry, cfg->cfi, LT_KERNELARGS,
3689		cfg->secondaryIndent, NULL);
3690		}
3691		firstElement = 1;
3692
3693		} else if (multibootArgs) {
3694		line = getLineByType(LT_HYPER, entry->lines);
3695		if (!line) {
3696		/* a multiboot entry without LT_HYPER? */
3697		continue;
3698		}
3699		firstElement = 2;
3700
3701		} else {
3702		line =
3703		getLineByType(LT_KERNEL | LT_MBMODULE |
3704		LT_KERNEL_EFI | LT_KERNEL_16,
3705		entry->lines);
3706		if (!line) {
3707		/* no LT_KERNEL or LT_MBMODULE in this entry? */
3708		continue;
3709		}
3710		firstElement = 2;
3711		}
3712
3713		/* handle the elilo case which does:
3714		*   append="hypervisor args -- kernel args"
3715		*/
3716		if (entry->multiboot && cfg->cfi->mbConcatArgs) {
3717		/* this is a multiboot entry, make sure there's
3718		* -- on the args line
3719		*/
3720		for (i = firstElement; i < line->numElements; i++) {
3721		if (!strcmp(line->elements[i].item, "--"))
3722		break;
3723		}
3724		if (i == line->numElements) {
3725		/* assume all existing args are kernel args,
3726		* prepend -- to make it official
3727		*/
3728		insertElement(line, "--", firstElement,
3729		cfg->cfi);
3730		i = firstElement;
3731		}
3732		if (!multibootArgs) {
3733		/* kernel args start after the -- */
3734		firstElement = i + 1;
3735		}
3736		} else if (cfg->cfi->mbConcatArgs) {
3737		/* this is a non-multiboot entry, remove hyper args */
3738		for (i = firstElement; i < line->numElements; i++) {
3739		if (!strcmp(line->elements[i].item, "--"))
3740		break;
3741		}
3742		if (i < line->numElements) {
3743		/* remove args up to -- */
3744		while (strcmp
3745		(line->elements[firstElement].item,
3746		"--"))
3747		removeElement(line, firstElement);
3748		/* remove -- */
3749		removeElement(line, firstElement);
3750		}
3751		}
3752
3753		usedElements = calloc(line->numElements, sizeof(*usedElements));
3754
3755		for (k = 0, arg = newArgs; *arg; arg++, k++) {
3756
3757		doreplace = 1;
3758		for (i = firstElement; i < line->numElements; i++) {
3759		if (multibootArgs && cfg->cfi->mbConcatArgs &&
3760		!strcmp(line->elements[i].item, "--")) {
3761		/* reached the end of hyper args, insert here */
3762		doreplace = 0;
3763		break;
3764		}
3765		if (usedElements[i])
3766		continue;
3767		if (!argNameMatch(line->elements[i].item, *arg)) {
3768		usedElements[i] = 1;
3769		break;
3770		}
3771		}
3772
3773		if (i < line->numElements && doreplace) {
3774		/* direct replacement */
3775		free(line->elements[i].item);
3776		line->elements[i].item = strdup(*arg);
3777
3778		} else if (useRoot && !strncmp(*arg, "root=/dev/", 10)) {
3779		/* root= replacement */
3780		rootLine = getLineByType(LT_ROOT, entry->lines);
3781		if (rootLine) {
3782		free(rootLine->elements[1].item);
3783		rootLine->elements[1].item =
3784		strdup(*arg + 5);
3785		} else {
3786		rootLine =
3787		addLine(entry, cfg->cfi, LT_ROOT,
3788		cfg->secondaryIndent,
3789		*arg + 5);
3790		}
3791		}
3792
3793		else {
3794		/* insert/append */
3795		insertElement(line, *arg, i, cfg->cfi);
3796		usedElements =
3797		realloc(usedElements,
3798		line->numElements *
3799		sizeof(*usedElements));
3800		memmove(&usedElements[i + 1], &usedElements[i],
3801		line->numElements - i - 1);
3802		usedElements[i] = 1;
3803
3804		/* if we updated a root= here even though
3805		* there is a LT_ROOT available we need to
3806		* remove the LT_ROOT entry (this will happen
3807		* if we switch from a device to a label) */
3808		if (useRoot && !strncmp(*arg, "root=", 5)) {
3809		rootLine =
3810		getLineByType(LT_ROOT,
3811		entry->lines);
3812		if (rootLine)
3813		removeLine(entry, rootLine);
3814		}
3815		}
3816		}
3817
3818		free(usedElements);
3819
3820		for (arg = oldArgs; *arg; arg++) {
3821		for (i = firstElement; i < line->numElements; i++) {
3822		if (multibootArgs && cfg->cfi->mbConcatArgs &&
3823		!strcmp(line->elements[i].item, "--"))
3824		/* reached the end of hyper args, stop here */
3825		break;
3826		if (!argNameMatch(line->elements[i].item, *arg)) {
3827		if (!argHasValue(*arg) ||
3828		!argValueMatch(line->elements[i].item, *arg)) {
3829		removeElement(line, i);
3830		break;
3831		}
3832		}
3833		}
3834		/* handle removing LT_ROOT line too */
3835		if (useRoot && !strncmp(*arg, "root=", 5)) {
3836		rootLine = getLineByType(LT_ROOT, entry->lines);
3837		if (rootLine)
3838		removeLine(entry, rootLine);
3839		}
3840		}
3841
3842		if (line->numElements == 1) {
3843		/* don't need the line at all (note it has to be a
3844		LT_KERNELARGS for this to happen */
3845		removeLine(entry, line);
3846		}
3847		}
3848
3849		free(newArgs);
3850		free(oldArgs);
3851
3852		return 0;
3853		}
3854
3855		int updateImage(struct grubConfig *cfg, const char *image,
3856		const char *prefix, const char *addArgs,
3857		const char *removeArgs,
3858		const char *addMBArgs, const char *removeMBArgs)
3859		{
3860		int rc = 0;
3861
3862		if (!image)
3863		return rc;
3864
3865		/* update the main args first... */
3866		if (addArgs || removeArgs)
3867		rc = updateActualImage(cfg, image, prefix, addArgs, removeArgs,
3868		0);
3869		if (rc)
3870		return rc;
3871
3872		/* and now any multiboot args */
3873		if (addMBArgs || removeMBArgs)
3874		rc = updateActualImage(cfg, image, prefix, addMBArgs,
3875		removeMBArgs, 1);
3876		return rc;
3877		}
3878
3879		int addMBInitrd(struct grubConfig *cfg, const char *newMBKernel,
3880		const char *image, const char *prefix, const char *initrd,
3881		const char *title)
3882		{
3883		struct singleEntry *entry;
3884		struct singleLine *line, *kernelLine, *endLine = NULL;
3885		int index = 0;
3886
3887		if (!image)
3888		return 0;
3889
3890		for (; (entry = findEntryByPath(cfg, image, prefix, &index)); index++) {
3891		kernelLine = getLineByType(LT_MBMODULE, entry->lines);
3892		if (!kernelLine)
3893		continue;
3894
3895		/* if title is supplied, the entry's title must match it. */
3896		if (title) {
3897		char *linetitle;
3898
3899		line =
3900		getLineByType(LT_TITLE | LT_MENUENTRY,
3901		entry->lines);
3902		if (!line)
3903		continue;
3904
3905		linetitle = extractTitle(cfg, line);
3906		if (!linetitle)
3907		continue;
3908		if (strcmp(title, linetitle)) {
3909		free(linetitle);
3910		continue;
3911		}
3912		free(linetitle);
3913		}
3914
3915		if (prefix) {
3916		int prefixLen = strlen(prefix);
3917		if (!strncmp(initrd, prefix, prefixLen))
3918		initrd += prefixLen;
3919		}
3920		endLine = getLineByType(LT_ENTRY_END, entry->lines);
3921		if (endLine)
3922		removeLine(entry, endLine);
3923		line =
3924		addLine(entry, cfg->cfi,
3925		preferredLineType(LT_MBMODULE, cfg->cfi),
3926		kernelLine->indent, initrd);
3927		if (!line)
3928		return 1;
3929		if (endLine) {
3930		line = addLine(entry, cfg->cfi, LT_ENTRY_END, "", NULL);
3931		if (!line)
3932		return 1;
3933		}
3934
3935		break;
3936		}
3937
3938		return 0;
3939		}
3940
3941		int updateInitrd(struct grubConfig *cfg, const char *image,
3942		const char *prefix, const char *initrd, const char *title)
3943		{
3944		struct singleEntry *entry;
3945		struct singleLine *line, *kernelLine, *endLine = NULL;
3946		int index = 0;
3947
3948		if (!image)
3949		return 0;
3950
3951		for (; (entry = findEntryByPath(cfg, image, prefix, &index)); index++) {
3952		kernelLine =
3953		getLineByType(LT_KERNEL | LT_KERNEL_EFI | LT_KERNEL_16,
3954		entry->lines);
3955		if (!kernelLine)
3956		continue;
3957
3958		/* if title is supplied, the entry's title must match it. */
3959		if (title) {
3960		char *linetitle;
3961
3962		line =
3963		getLineByType(LT_TITLE | LT_MENUENTRY,
3964		entry->lines);
3965		if (!line)
3966		continue;
3967
3968		linetitle = extractTitle(cfg, line);
3969		if (!linetitle)
3970		continue;
3971		if (strcmp(title, linetitle)) {
3972		free(linetitle);
3973		continue;
3974		}
3975		free(linetitle);
3976		}
3977
3978		line =
3979		getLineByType(LT_INITRD | LT_INITRD_EFI | LT_INITRD_16,
3980		entry->lines);
3981		if (line)
3982		removeLine(entry, line);
3983		if (prefix) {
3984		int prefixLen = strlen(prefix);
3985		if (!strncmp(initrd, prefix, prefixLen))
3986		initrd += prefixLen;
3987		}
3988		endLine = getLineByType(LT_ENTRY_END, entry->lines);
3989		if (endLine)
3990		removeLine(entry, endLine);
3991		enum lineType_e lt;
3992		switch (kernelLine->type) {
3993		case LT_KERNEL:
3994		lt = LT_INITRD;
3995		break;
3996		case LT_KERNEL_EFI:
3997		lt = LT_INITRD_EFI;
3998		break;
3999		case LT_KERNEL_16:
4000		lt = LT_INITRD_16;
4001		break;
4002		default:
4003		lt = preferredLineType(LT_INITRD, cfg->cfi);
4004		}
4005		line = addLine(entry, cfg->cfi, lt, kernelLine->indent, initrd);
4006		if (!line)
4007		return 1;
4008		if (endLine) {
4009		line = addLine(entry, cfg->cfi, LT_ENTRY_END, "", NULL);
4010		if (!line)
4011		return 1;
4012		}
4013
4014		break;
4015		}
4016
4017		return 0;
4018		}
4019
4020		int checkDeviceBootloader(const char *device, const unsigned char *boot)
4021		{
4022		int fd;
4023		unsigned char bootSect[512];
4024		int offset;
4025
4026		fd = open(device, O_RDONLY);
4027		if (fd < 0) {
4028		fprintf(stderr, _("grubby: unable to open %s: %s\n"),
4029		device, strerror(errno));
4030		return 1;
4031		}
4032
4033		if (read(fd, bootSect, 512) != 512) {
4034		fprintf(stderr, _("grubby: unable to read %s: %s\n"),
4035		device, strerror(errno));
4036		return 1;
4037		}
4038		close(fd);
4039
4040		/* first three bytes should match, a jmp short should be in there */
4041		if (memcmp(boot, bootSect, 3))
4042		return 0;
4043
4044		if (boot[1] == JMP_SHORT_OPCODE) {
4045		offset = boot[2] + 2;
4046		} else if (boot[1] == 0xe8 || boot[1] == 0xe9) {
4047		offset = (boot[3] << 8) + boot[2] + 2;
4048		} else if (boot[0] == JMP_SHORT_OPCODE) {
4049		offset = boot[1] + 2;
4050		/*
4051		* it looks like grub, when copying stage1 into the mbr,
4052		* patches stage1 right after the JMP location, replacing
4053		* other instructions such as JMPs for NOOPs. So, relax the
4054		* check a little bit by skipping those different bytes.
4055		*/
4056		if ((bootSect[offset + 1] == NOOP_OPCODE)
4057		&& (bootSect[offset + 2] == NOOP_OPCODE)) {
4058		offset = offset + 3;
4059		}
4060		} else if (boot[0] == 0xe8 || boot[0] == 0xe9) {
4061		offset = (boot[2] << 8) + boot[1] + 2;
4062		} else {
4063		return 0;
4064		}
4065
4066		if (memcmp(boot + offset, bootSect + offset, CODE_SEG_SIZE))
4067		return 0;
4068
4069		return 2;
4070		}
4071
4072		int checkLiloOnRaid(char *mdDev, const unsigned char *boot)
4073		{
4074		int fd;
4075		char buf[65536];
4076		char *end;
4077		char *chptr;
4078		char *chptr2;
4079		int rc;
4080
4081		/* it's on raid; we need to parse /proc/mdstat and check all of the
4082		*raw* devices listed in there */
4083
4084		if (!strncmp(mdDev, "/dev/", 5))
4085		mdDev += 5;
4086
4087		if ((fd = open("/proc/mdstat", O_RDONLY)) < 0) {
4088		fprintf(stderr, _("grubby: failed to open /proc/mdstat: %s\n"),
4089		strerror(errno));
4090		return 2;
4091		}
4092
4093		rc = read(fd, buf, sizeof(buf) - 1);
4094		if (rc < 0 || rc == (sizeof(buf) - 1)) {
4095		fprintf(stderr, _("grubby: failed to read /proc/mdstat: %s\n"),
4096		strerror(errno));
4097		close(fd);
4098		return 2;
4099		}
4100		close(fd);
4101		buf[rc] = '\0';
4102
4103		chptr = buf;
4104		while (*chptr) {
4105		end = strchr(chptr, '\n');
4106		if (!end)
4107		break;
4108		*end = '\0';
4109
4110		if (!strncmp(chptr, mdDev, strlen(mdDev)) &&
4111		chptr[strlen(mdDev)] == ' ') {
4112
4113		/* found the device */
4114		while (*chptr && *chptr != ':')
4115		chptr++;
4116		chptr++;
4117		while (*chptr && isspace(*chptr))
4118		chptr++;
4119
4120		/* skip the "active" bit */
4121		while (*chptr && !isspace(*chptr))
4122		chptr++;
4123		while (*chptr && isspace(*chptr))
4124		chptr++;
4125
4126		/* skip the raid level */
4127		while (*chptr && !isspace(*chptr))
4128		chptr++;
4129		while (*chptr && isspace(*chptr))
4130		chptr++;
4131
4132		/* everything else is partition stuff */
4133		while (*chptr) {
4134		chptr2 = chptr;
4135		while (*chptr2 && *chptr2 != '[')
4136		chptr2++;
4137		if (!*chptr2)
4138		break;
4139
4140		/* yank off the numbers at the end */
4141		chptr2--;
4142		while (isdigit(*chptr2) && chptr2 > chptr)
4143		chptr2--;
4144		chptr2++;
4145		*chptr2 = '\0';
4146
4147		/* Better, now we need the /dev/ back. We're
4148		* done with everything before this point, so
4149		* we can just put the /dev/ part there.
4150		* There will always be room. */
4151		memcpy(chptr - 5, "/dev/", 5);
4152		rc = checkDeviceBootloader(chptr - 5, boot);
4153		if (rc != 2) {
4154		return rc;
4155		}
4156
4157		chptr = chptr2 + 1;
4158		/* skip the [11] bit */
4159		while (*chptr && !isspace(*chptr))
4160		chptr++;
4161		/* and move to the next one */
4162		while (*chptr && isspace(*chptr))
4163		chptr++;
4164		}
4165
4166		/*  we're good to go */
4167		return 2;
4168		}
4169
4170		chptr = end + 1;
4171		}
4172
4173		fprintf(stderr,
4174		_("grubby: raid device /dev/%s not found in /proc/mdstat\n"),
4175		mdDev);
4176		return 0;
4177		}
4178
4179		int checkForLilo(struct grubConfig *config)
4180		{
4181		int fd;
4182		unsigned char boot[512];
4183		struct singleLine *line;
4184
4185		for (line = config->theLines; line; line = line->next)
4186		if (line->type == LT_BOOT)
4187		break;
4188
4189		if (!line) {
4190		fprintf(stderr,
4191		_
4192		("grubby: no boot line found in lilo configuration\n"));
4193		return 1;
4194		}
4195
4196		if (line->numElements != 2)
4197		return 1;
4198
4199		fd = open("/boot/boot.b", O_RDONLY);
4200		if (fd < 0) {
4201		fprintf(stderr, _("grubby: unable to open %s: %s\n"),
4202		"/boot/boot.b", strerror(errno));
4203		return 1;
4204		}
4205
4206		if (read(fd, boot, 512) != 512) {
4207		fprintf(stderr, _("grubby: unable to read %s: %s\n"),
4208		"/boot/boot.b", strerror(errno));
4209		return 1;
4210		}
4211		close(fd);
4212
4213		if (!strncmp("/dev/md", line->elements[1].item, 7))
4214		return checkLiloOnRaid(line->elements[1].item, boot);
4215
4216		return checkDeviceBootloader(line->elements[1].item, boot);
4217		}
4218
4219		int checkForGrub2(struct grubConfig *config)
4220		{
4221		if (!access("/etc/grub.d/", R_OK))
4222		return 2;
4223
4224		return 1;
4225		}
4226
4227		int checkForGrub(struct grubConfig *config)
4228		{
4229		int fd;
4230		unsigned char bootSect[512];
4231		char *boot;
4232		int onSuse = isSuseSystem();
4233
4234		if (onSuse) {
4235		if (parseSuseGrubConf(NULL, &boot))
4236		return 0;
4237		} else {
4238		if (parseSysconfigGrub(NULL, &boot))
4239		return 0;
4240		}
4241
4242		/* assume grub is not installed -- not an error condition */
4243		if (!boot)
4244		return 0;
4245
4246		fd = open("/boot/grub/stage1", O_RDONLY);
4247		if (fd < 0)
4248		/* this doesn't exist if grub hasn't been installed */
4249		return 0;
4250
4251		if (read(fd, bootSect, 512) != 512) {
4252		fprintf(stderr, _("grubby: unable to read %s: %s\n"),
4253		"/boot/grub/stage1", strerror(errno));
4254		close(fd);
4255		return 1;
4256		}
4257		close(fd);
4258
4259		/* The more elaborate checks do not work on SuSE. The checks done
4260		* seem to be reasonble (at least for now), so just return success
4261		*/
4262		if (onSuse)
4263		return 2;
4264
4265		return checkDeviceBootloader(boot, bootSect);
4266		}
4267
4268		int checkForExtLinux(struct grubConfig *config)
4269		{
4270		int fd;
4271		unsigned char bootSect[512];
4272		char *boot;
4273		char executable[] = "/boot/extlinux/extlinux";
4274
4275		printf("entered: checkForExtLinux()\n");
4276
4277		if (parseSysconfigGrub(NULL, &boot))
4278		return 0;
4279
4280		/* assume grub is not installed -- not an error condition */
4281		if (!boot)
4282		return 0;
4283
4284		fd = open(executable, O_RDONLY);
4285		if (fd < 0)
4286		/* this doesn't exist if grub hasn't been installed */
4287		return 0;
4288
4289		if (read(fd, bootSect, 512) != 512) {
4290		fprintf(stderr, _("grubby: unable to read %s: %s\n"),
4291		executable, strerror(errno));
4292		return 1;
4293		}
4294		close(fd);
4295
4296		return checkDeviceBootloader(boot, bootSect);
4297		}
4298
4299		int checkForYaboot(struct grubConfig *config)
4300		{
4301		/*
4302		* This is a simplistic check that we consider good enough for own puporses
4303		*
4304		* If we were to properly check if yaboot is *installed* we'd need to:
4305		* 1) get the system boot device (LT_BOOT)
4306		* 2) considering it's a raw filesystem, check if the yaboot binary matches
4307		*    the content on the boot device
4308		* 3) if not, copy the binary to a temporary file and run "addnote" on it
4309		* 4) check again if binary and boot device contents match
4310		*/
4311		if (!access("/etc/yaboot.conf", R_OK))
4312		return 2;
4313
4314		return 1;
4315		}
4316
4317		int checkForElilo(struct grubConfig *config)
4318		{
4319		if (!access("/etc/elilo.conf", R_OK))
4320		return 2;
4321
4322		return 1;
4323		}
4324
4325		static size_t getRootSpecifier(const char *str)
4326		{
4327		size_t rs = 0;
4328
4329		if (*str == '(') {
4330		for (; str[rs] != ')' && !isspace(str[rs]); rs++) {
4331		if (!str[rs])
4332		return rs;
4333		}
4334		rs++;
4335		}
4336
4337		return rs;
4338		}
4339
4340		static char *getInitrdVal(struct grubConfig *config,
4341		const char *prefix, struct singleLine *tmplLine,
4342		const char *newKernelInitrd,
4343		const char **extraInitrds, int extraInitrdCount)
4344		{
4345		char *initrdVal, *end;
4346		int i;
4347		size_t totalSize;
4348		size_t prefixLen;
4349		char separatorChar;
4350
4351		prefixLen = strlen(prefix);
4352		totalSize = strlen(newKernelInitrd) - prefixLen + 1 /* \0 */ ;
4353
4354		for (i = 0; i < extraInitrdCount; i++) {
4355		totalSize += sizeof(separatorChar);
4356		totalSize += strlen(extraInitrds[i]) - prefixLen;
4357		}
4358
4359		initrdVal = end = malloc(totalSize);
4360
4361		end = stpcpy(end, newKernelInitrd + prefixLen);
4362
4363		separatorChar = getKeywordByType(LT_INITRD, config->cfi)->separatorChar;
4364		for (i = 0; i < extraInitrdCount; i++) {
4365		const char *extraInitrd;
4366		int j;
4367
4368		extraInitrd = extraInitrds[i] + prefixLen;
4369		/* Don't add entries that are already there */
4370		if (tmplLine != NULL) {
4371		for (j = 2; j < tmplLine->numElements; j++)
4372		if (strcmp
4373		(extraInitrd,
4374		tmplLine->elements[j].item) == 0)
4375		break;
4376
4377		if (j != tmplLine->numElements)
4378		continue;
4379		}
4380
4381		*end++ = separatorChar;
4382		end = stpcpy(end, extraInitrd);
4383		}
4384
4385		return initrdVal;
4386		}
4387
4388		int addNewKernel(struct grubConfig *config, struct singleEntry *template,
4389		const char *prefix,
4390		const char *newKernelPath, const char *newKernelTitle,
4391		const char *newKernelArgs, const char *newKernelInitrd,
4392		const char **extraInitrds, int extraInitrdCount,
4393		const char *newMBKernel, const char *newMBKernelArgs,
4394		const char *newDevTreePath, int newIndex)
4395		{
4396		struct singleEntry *new, *entry, *prev = NULL;
4397		struct singleLine *newLine = NULL, *tmplLine = NULL, *masterLine = NULL;
4398		int needs;
4399		char *indexs;
4400		char *chptr;
4401		int rc;
4402
4403		if (!newKernelPath)
4404		return 0;
4405
4406		rc = asprintf(&indexs, "%d", newIndex);
4407		if (rc < 0)
4408		return 1;
4409
4410		/* if the newKernelTitle is too long silently munge it into something
4411		* we can live with. truncating is first check, then we'll just mess with
4412		* it until it looks better */
4413		if (config->cfi->maxTitleLength &&
4414		(strlen(newKernelTitle) > config->cfi->maxTitleLength)) {
4415		char *buf = alloca(config->cfi->maxTitleLength + 7);
4416		char *numBuf = alloca(config->cfi->maxTitleLength + 1);
4417		int i = 1;
4418
4419		sprintf(buf, "TITLE=%.*s", config->cfi->maxTitleLength,
4420		newKernelTitle);
4421		while (findEntryByPath(config, buf, NULL, NULL)) {
4422		sprintf(numBuf, "%d", i++);
4423		strcpy(buf + strlen(buf) - strlen(numBuf), numBuf);
4424		}
4425
4426		newKernelTitle = buf + 6;
4427		}
4428
4429		new = malloc(sizeof(*new));
4430		new->skip = 0;
4431		new->multiboot = 0;
4432		new->lines = NULL;
4433		entry = config->entries;
4434		for (unsigned int i = 0; i < newIndex; i++) {
4435		if (!entry)
4436		break;
4437		prev = entry;
4438		entry = entry->next;
4439		}
4440		new->next = entry;
4441
4442		if (prev)
4443		prev->next = new;
4444		else
4445		config->entries = new;
4446
4447		/* copy/update from the template */
4448		needs = NEED_KERNEL | NEED_TITLE;
4449		if (newKernelInitrd)
4450		needs |= NEED_INITRD;
4451		if (newMBKernel) {
4452		needs |= NEED_MB;
4453		new->multiboot = 1;
4454		}
4455		if (newDevTreePath && getKeywordByType(LT_DEVTREE, config->cfi))
4456		needs |= NEED_DEVTREE;
4457
4458		if (template) {
4459		for (masterLine = template->lines;
4460		masterLine && (tmplLine = lineDup(masterLine));
4461		lineFree(tmplLine), masterLine = masterLine->next) {
4462		dbgPrintf("addNewKernel processing %d\n",
4463		tmplLine->type);
4464
4465		/* skip comments */
4466		chptr = tmplLine->indent;
4467		while (*chptr && isspace(*chptr))
4468		chptr++;
4469		if (*chptr == '#')
4470		continue;
4471
4472		if (iskernel(tmplLine->type)
4473		&& tmplLine->numElements >= 2) {
4474		if (!template->multiboot && (needs & NEED_MB)) {
4475		/* it's not a multiboot template and
4476		* this is the kernel line.  Try to
4477		* be intelligent about inserting the
4478		* hypervisor at the same time.
4479		*/
4480		if (config->cfi->mbHyperFirst) {
4481		/* insert the hypervisor first */
4482		newLine =
4483		addLine(new, config->cfi,
4484		LT_HYPER,
4485		tmplLine->indent,
4486		newMBKernel +
4487		strlen(prefix));
4488		/* set up for adding the
4489		* kernel line */
4490		free(tmplLine->indent);
4491		tmplLine->indent =
4492		strdup(config->
4493		secondaryIndent);
4494		needs &= ~NEED_MB;
4495		}
4496		if (needs & NEED_KERNEL) {
4497		/* use addLineTmpl to
4498		* preserve line elements,
4499		* otherwise we could just
4500		* call addLine.
4501		* Unfortunately this means
4502		* making some changes to the
4503		* template such as the
4504		* indent change above and
4505		* the type change below.
4506		*/
4507		struct keywordTypes *mbm_kw =
4508		getKeywordByType
4509		(LT_MBMODULE, config->cfi);
4510		if (mbm_kw) {
4511		tmplLine->type =
4512		LT_MBMODULE;
4513		free(tmplLine->
4514		elements[0].item);
4515		tmplLine->elements[0].
4516		item =
4517		strdup(mbm_kw->key);
4518		}
4519		newLine =
4520		addLineTmpl(new, tmplLine,
4521		newLine,
4522		newKernelPath +
4523		strlen(prefix),
4524		config->cfi);
4525		needs &= ~NEED_KERNEL;
4526		}
4527		if (needs & NEED_MB) { /* !mbHyperFirst */
4528		newLine =
4529		addLine(new, config->cfi,
4530		LT_HYPER,
4531		config->
4532		secondaryIndent,
4533		newMBKernel +
4534		strlen(prefix));
4535		needs &= ~NEED_MB;
4536		}
4537		} else if (needs & NEED_KERNEL) {
4538		newLine =
4539		addLineTmpl(new, tmplLine, newLine,
4540		newKernelPath +
4541		strlen(prefix),
4542		config->cfi);
4543		needs &= ~NEED_KERNEL;
4544		}
4545
4546		} else if (tmplLine->type == LT_HYPER &&
4547		tmplLine->numElements >= 2) {
4548		if (needs & NEED_MB) {
4549		newLine =
4550		addLineTmpl(new, tmplLine, newLine,
4551		newMBKernel +
4552		strlen(prefix),
4553		config->cfi);
4554		needs &= ~NEED_MB;
4555		}
4556
4557		} else if (tmplLine->type == LT_MBMODULE &&
4558		tmplLine->numElements >= 2) {
4559		if (new->multiboot) {
4560		if (needs & NEED_KERNEL) {
4561		newLine =
4562		addLineTmpl(new, tmplLine,
4563		newLine,
4564		newKernelPath +
4565		strlen(prefix),
4566		config->cfi);
4567		needs &= ~NEED_KERNEL;
4568		} else if (config->cfi->mbInitRdIsModule
4569		&& (needs & NEED_INITRD)) {
4570		char *initrdVal;
4571		initrdVal =
4572		getInitrdVal(config, prefix,
4573		tmplLine,
4574		newKernelInitrd,
4575		extraInitrds,
4576		extraInitrdCount);
4577		newLine =
4578		addLineTmpl(new, tmplLine,
4579		newLine,
4580		initrdVal,
4581		config->cfi);
4582		free(initrdVal);
4583		needs &= ~NEED_INITRD;
4584		}
4585		} else if (needs & NEED_KERNEL) {
4586		/* template is multi but new is not,
4587		* insert the kernel in the first
4588		* module slot
4589		*/
4590		tmplLine->type =
4591		preferredLineType(LT_KERNEL,
4592		config->cfi);
4593		free(tmplLine->elements[0].item);
4594		tmplLine->elements[0].item =
4595		strdup(getKeywordByType
4596		(tmplLine->type,
4597		config->cfi)->key);
4598		newLine =
4599		addLineTmpl(new, tmplLine, newLine,
4600		newKernelPath +
4601		strlen(prefix),
4602		config->cfi);
4603		needs &= ~NEED_KERNEL;
4604		} else if (needs & NEED_INITRD) {
4605		char *initrdVal;
4606		/* template is multi but new is not,
4607		* insert the initrd in the second
4608		* module slot
4609		*/
4610		tmplLine->type =
4611		preferredLineType(LT_INITRD,
4612		config->cfi);
4613		free(tmplLine->elements[0].item);
4614		tmplLine->elements[0].item =
4615		strdup(getKeywordByType
4616		(tmplLine->type,
4617		config->cfi)->key);
4618		initrdVal =
4619		getInitrdVal(config, prefix,
4620		tmplLine,
4621		newKernelInitrd,
4622		extraInitrds,
4623		extraInitrdCount);
4624		newLine =
4625		addLineTmpl(new, tmplLine, newLine,
4626		initrdVal, config->cfi);
4627		free(initrdVal);
4628		needs &= ~NEED_INITRD;
4629		}
4630
4631		} else if (isinitrd(tmplLine->type)
4632		&& tmplLine->numElements >= 2) {
4633		if (needs & NEED_INITRD && new->multiboot
4634		&& !template->multiboot
4635		&& config->cfi->mbInitRdIsModule) {
4636		/* make sure we don't insert the
4637		* module initrd before the module
4638		* kernel... if we don't do it here,
4639		* it will be inserted following the
4640		* template.
4641		*/
4642		if (!needs & NEED_KERNEL) {
4643		char *initrdVal;
4644
4645		initrdVal =
4646		getInitrdVal(config, prefix,
4647		tmplLine,
4648		newKernelInitrd,
4649		extraInitrds,
4650		extraInitrdCount);
4651		newLine =
4652		addLine(new, config->cfi,
4653		LT_MBMODULE,
4654		config->
4655		secondaryIndent,
4656		initrdVal);
4657		free(initrdVal);
4658		needs &= ~NEED_INITRD;
4659		}
4660		} else if (needs & NEED_INITRD) {
4661		char *initrdVal;
4662		initrdVal =
4663		getInitrdVal(config, prefix,
4664		tmplLine,
4665		newKernelInitrd,
4666		extraInitrds,
4667		extraInitrdCount);
4668		newLine =
4669		addLineTmpl(new, tmplLine, newLine,
4670		initrdVal, config->cfi);
4671		free(initrdVal);
4672		needs &= ~NEED_INITRD;
4673		}
4674
4675		} else if (tmplLine->type == LT_MENUENTRY &&
4676		(needs & NEED_TITLE)) {
4677		requote(tmplLine, config->cfi);
4678		char *nkt = malloc(strlen(newKernelTitle) + 3);
4679		strcpy(nkt, "'");
4680		strcat(nkt, newKernelTitle);
4681		strcat(nkt, "'");
4682		newLine =
4683		addLineTmpl(new, tmplLine, newLine, nkt,
4684		config->cfi);
4685		free(nkt);
4686		needs &= ~NEED_TITLE;
4687		} else if (tmplLine->type == LT_TITLE &&
4688		(needs & NEED_TITLE)) {
4689		if (tmplLine->numElements >= 2) {
4690		newLine =
4691		addLineTmpl(new, tmplLine, newLine,
4692		newKernelTitle,
4693		config->cfi);
4694		needs &= ~NEED_TITLE;
4695		} else if (tmplLine->numElements == 1 &&
4696		config->cfi->titleBracketed) {
4697		/* addLineTmpl doesn't handle
4698		* titleBracketed */
4699		newLine =
4700		addLine(new, config->cfi, LT_TITLE,
4701		tmplLine->indent,
4702		newKernelTitle);
4703		needs &= ~NEED_TITLE;
4704		}
4705		} else if (tmplLine->type == LT_ECHO) {
4706		requote(tmplLine, config->cfi);
4707		static const char *prefix = "'Loading ";
4708		if (tmplLine->numElements > 1 &&
4709		strstr(tmplLine->elements[1].item, prefix)
4710		&& masterLine->next
4711		&& iskernel(masterLine->next->type)) {
4712		char *newTitle =
4713		malloc(strlen(prefix) +
4714		strlen(newKernelTitle) + 2);
4715
4716		strcpy(newTitle, prefix);
4717		strcat(newTitle, newKernelTitle);
4718		strcat(newTitle, "'");
4719		newLine =
4720		addLine(new, config->cfi, LT_ECHO,
4721		tmplLine->indent, newTitle);
4722		free(newTitle);
4723		} else {
4724		/* pass through other lines from the
4725		* template */
4726		newLine =
4727		addLineTmpl(new, tmplLine, newLine,
4728		NULL, config->cfi);
4729		}
4730		} else if (tmplLine->type == LT_DEVTREE &&
4731		tmplLine->numElements == 2
4732		&& newDevTreePath) {
4733		newLine =
4734		addLineTmpl(new, tmplLine, newLine,
4735		newDevTreePath + strlen(prefix),
4736		config->cfi);
4737		needs &= ~NEED_DEVTREE;
4738		} else if (tmplLine->type == LT_ENTRY_END
4739		&& needs & NEED_DEVTREE) {
4740		const char *ndtp = newDevTreePath;
4741		if (!strncmp
4742		(newDevTreePath, prefix, strlen(prefix)))
4743		ndtp += strlen(prefix);
4744		newLine = addLine(new, config->cfi, LT_DEVTREE,
4745		config->secondaryIndent,
4746		ndtp);
4747		needs &= ~NEED_DEVTREE;
4748		newLine =
4749		addLineTmpl(new, tmplLine, newLine, NULL,
4750		config->cfi);
4751		} else {
4752		/* pass through other lines from the template */
4753		newLine =
4754		addLineTmpl(new, tmplLine, newLine, NULL,
4755		config->cfi);
4756		}
4757		}
4758
4759		} else {
4760		/* don't have a template, so start the entry with the
4761		* appropriate starting line
4762		*/
4763		switch (config->cfi->entryStart) {
4764		case LT_KERNEL:
4765		case LT_KERNEL_EFI:
4766		case LT_KERNEL_16:
4767		if (new->multiboot && config->cfi->mbHyperFirst) {
4768		/* fall through to LT_HYPER */
4769		} else {
4770		newLine = addLine(new, config->cfi,
4771		preferredLineType(LT_KERNEL,
4772		config->
4773		cfi),
4774		config->primaryIndent,
4775		newKernelPath +
4776		strlen(prefix));
4777		needs &= ~NEED_KERNEL;
4778		break;
4779		}
4780
4781		case LT_HYPER:
4782		newLine = addLine(new, config->cfi, LT_HYPER,
4783		config->primaryIndent,
4784		newMBKernel + strlen(prefix));
4785		needs &= ~NEED_MB;
4786		break;
4787
4788		case LT_MENUENTRY:{
4789		char *nkt = malloc(strlen(newKernelTitle) + 3);
4790		strcpy(nkt, "'");
4791		strcat(nkt, newKernelTitle);
4792		strcat(nkt, "'");
4793		newLine =
4794		addLine(new, config->cfi, LT_MENUENTRY,
4795		config->primaryIndent, nkt);
4796		free(nkt);
4797		needs &= ~NEED_TITLE;
4798		needs |= NEED_END;
4799		break;
4800		}
4801		case LT_TITLE:
4802		if (useextlinuxmenu != 0) { // We just need useextlinuxmenu to not be zero (set above)
4803		char *templabel;
4804		int x = 0, y = 0;
4805
4806		templabel = strdup(newKernelTitle);
4807		while (templabel[x]) {
4808		if (templabel[x] == ' ') {
4809		y = x;
4810		while (templabel[y]) {
4811		templabel[y] =
4812		templabel[y + 1];
4813		y++;
4814		}
4815		}
4816		x++;
4817		}
4818		newLine = addLine(new, config->cfi, LT_TITLE,
4819		config->primaryIndent,
4820		templabel);
4821		free(templabel);
4822		} else {
4823		newLine = addLine(new, config->cfi, LT_TITLE,
4824		config->primaryIndent,
4825		newKernelTitle);
4826		}
4827		needs &= ~NEED_TITLE;
4828		break;
4829
4830		default:
4831		abort();
4832		}
4833		}
4834
4835		struct singleLine *endLine = NULL;
4836		endLine = getLineByType(LT_ENTRY_END, new->lines);
4837		if (endLine) {
4838		removeLine(new, endLine);
4839		needs |= NEED_END;
4840		}
4841
4842		/* add the remainder of the lines, i.e. those that either
4843		* weren't present in the template, or in the case of no template,
4844		* all the lines following the entryStart.
4845		*/
4846		if (needs & NEED_TITLE) {
4847		newLine = addLine(new, config->cfi, LT_TITLE,
4848		config->secondaryIndent, newKernelTitle);
4849		needs &= ~NEED_TITLE;
4850		}
4851		if ((needs & NEED_MB) && config->cfi->mbHyperFirst) {
4852		newLine = addLine(new, config->cfi, LT_HYPER,
4853		config->secondaryIndent,
4854		newMBKernel + strlen(prefix));
4855		needs &= ~NEED_MB;
4856		}
4857		if (needs & NEED_KERNEL) {
4858		newLine = addLine(new, config->cfi,
4859		(new->multiboot
4860		&& getKeywordByType(LT_MBMODULE,
4861		config->cfi))
4862		? LT_MBMODULE : preferredLineType(LT_KERNEL,
4863		config->
4864		cfi),
4865		config->secondaryIndent,
4866		newKernelPath + strlen(prefix));
4867		needs &= ~NEED_KERNEL;
4868		}
4869		if (needs & NEED_MB) {
4870		newLine = addLine(new, config->cfi, LT_HYPER,
4871		config->secondaryIndent,
4872		newMBKernel + strlen(prefix));
4873		needs &= ~NEED_MB;
4874		}
4875		if (needs & NEED_INITRD) {
4876		char *initrdVal;
4877		initrdVal =
4878		getInitrdVal(config, prefix, NULL, newKernelInitrd,
4879		extraInitrds, extraInitrdCount);
4880		newLine =
4881		addLine(new, config->cfi,
4882		(new->multiboot
4883		&& getKeywordByType(LT_MBMODULE, config->cfi))
4884		? LT_MBMODULE : preferredLineType(LT_INITRD,
4885		config->cfi),
4886		config->secondaryIndent, initrdVal);
4887		free(initrdVal);
4888		needs &= ~NEED_INITRD;
4889		}
4890		if (needs & NEED_DEVTREE) {
4891		newLine = addLine(new, config->cfi, LT_DEVTREE,
4892		config->secondaryIndent, newDevTreePath);
4893		needs &= ~NEED_DEVTREE;
4894		}
4895
4896		/* NEEDS_END must be last on bootloaders that need it... */
4897		if (needs & NEED_END) {
4898		newLine = addLine(new, config->cfi, LT_ENTRY_END,
4899		config->secondaryIndent, NULL);
4900		needs &= ~NEED_END;
4901		}
4902
4903		if (needs) {
4904		printf(_("grubby: needs=%d, aborting\n"), needs);
4905		abort();
4906		}
4907
4908		if (updateImage(config, indexs, prefix, newKernelArgs, NULL,
4909		newMBKernelArgs, NULL)) {
4910		config->isModified = 1;
4911		return 1;
4912		}
4913
4914		return 0;
4915		}
4916
4917		int main(int argc, const char **argv)
4918		{
4919		poptContext optCon;
4920		const char *grubConfig = NULL;
4921		char *outputFile = NULL;
4922		int arg = 0;
4923		int flags = 0;
4924		int badImageOkay = 0;
4925		int configureGrub2 = 0;
4926		int configureLilo = 0, configureELilo = 0, configureGrub = 0;
4927		int configureYaboot = 0, configureSilo = 0, configureZipl = 0;
4928		int configureExtLinux = 0;
4929		int bootloaderProbe = 0;
4930		int extraInitrdCount = 0;
4931		char *updateKernelPath = NULL;
4932		char *newKernelPath = NULL;
4933		char *removeKernelPath = NULL;
4934		char *newKernelArgs = NULL;
4935		char *newKernelInitrd = NULL;
4936		char *newKernelTitle = NULL;
4937		char *newDevTreePath = NULL;
4938		char *newMBKernel = NULL;
4939		char *newMBKernelArgs = NULL;
4940		int newIndex = 0;
4941		char *removeMBKernelArgs = NULL;
4942		char *removeMBKernel = NULL;
4943		char *bootPrefix = NULL;
4944		char *defaultKernel = NULL;
4945		char *removeArgs = NULL;
4946		char *kernelInfo = NULL;
4947		char *extraInitrds[MAX_EXTRA_INITRDS] = { NULL };
4948		char *envPath = NULL;
4949		const char *chptr = NULL;
4950		struct configFileInfo *cfi = NULL;
4951		struct grubConfig *config;
4952		struct singleEntry *template = NULL;
4953		int copyDefault = 0, makeDefault = 0;
4954		int displayDefault = 0;
4955		int displayDefaultIndex = 0;
4956		int displayDefaultTitle = 0;
4957		int defaultIndex = -1;
4958		struct poptOption options[] = {
4959		{"add-kernel", 0, POPT_ARG_STRING, &newKernelPath, 0,
4960		_("add an entry for the specified kernel"), _("kernel-path")},
4961		{"add-multiboot", 0, POPT_ARG_STRING, &newMBKernel, 0,
4962		_("add an entry for the specified multiboot kernel"), NULL},
4963		{"args", 0, POPT_ARG_STRING, &newKernelArgs, 0,
4964		_("default arguments for the new kernel or new arguments for "
4965		"kernel being updated"), _("args")},
4966		{"mbargs", 0, POPT_ARG_STRING, &newMBKernelArgs, 0,
4967		_("default arguments for the new multiboot kernel or "
4968		"new arguments for multiboot kernel being updated"), NULL},
4969		{"bad-image-okay", 0, 0, &badImageOkay, 0,
4970		_
4971		("don't sanity check images in boot entries (for testing only)"),
4972		NULL},
4973		{"boot-filesystem", 0, POPT_ARG_STRING, &bootPrefix, 0,
4974		_
4975		("filesystem which contains /boot directory (for testing only)"),
4976		_("bootfs")},
4977		#if defined(__i386__) || defined(__x86_64__) || defined (__powerpc64__) || defined (__ia64__)
4978		{"bootloader-probe", 0, POPT_ARG_NONE, &bootloaderProbe, 0,
4979		_("check which bootloader is installed on boot sector")},
4980		#endif
4981		{"config-file", 'c', POPT_ARG_STRING, &grubConfig, 0,
4982		_("path to grub config file to update (\"-\" for stdin)"),
4983		_("path")},
4984		{"copy-default", 0, 0, &copyDefault, 0,
4985		_("use the default boot entry as a template for the new entry "
4986		"being added; if the default is not a linux image, or if "
4987		"the kernel referenced by the default image does not exist, "
4988		"the first linux entry whose kernel does exist is used as the "
4989		"template"), NULL},
4990		{"debug", 0, 0, &debug, 0,
4991		_("print debugging information for failures")},
4992		{"default-kernel", 0, 0, &displayDefault, 0,
4993		_("display the path of the default kernel")},
4994		{"default-index", 0, 0, &displayDefaultIndex, 0,
4995		_("display the index of the default kernel")},
4996		{"default-title", 0, 0, &displayDefaultTitle, 0,
4997		_("display the title of the default kernel")},
4998		{"devtree", 0, POPT_ARG_STRING, &newDevTreePath, 0,
4999		_("device tree file for new stanza"), _("dtb-path")},
5000		{"devtreedir", 0, POPT_ARG_STRING, &newDevTreePath, 0,
5001		_("device tree directory for new stanza"), _("dtb-path")},
5002		{"elilo", 0, POPT_ARG_NONE, &configureELilo, 0,
5003		_("configure elilo bootloader")},
5004		{"efi", 0, POPT_ARG_NONE, &isEfi, 0,
5005		_("force grub2 stanzas to use efi")},
5006		{"env", 0, POPT_ARG_STRING, &envPath, 0,
5007		_("path for environment data"),
5008		_("path")},
5009		{"extlinux", 0, POPT_ARG_NONE, &configureExtLinux, 0,
5010		_("configure extlinux bootloader (from syslinux)")},
5011		{"grub", 0, POPT_ARG_NONE, &configureGrub, 0,
5012		_("configure grub bootloader")},
5013		{"grub2", 0, POPT_ARG_NONE, &configureGrub2, 0,
5014		_("configure grub2 bootloader")},
5015		{"info", 0, POPT_ARG_STRING, &kernelInfo, 0,
5016		_("display boot information for specified kernel"),
5017		_("kernel-path")},
5018		{"initrd", 0, POPT_ARG_STRING, &newKernelInitrd, 0,
5019		_("initrd image for the new kernel"), _("initrd-path")},
5020		{"extra-initrd", 'i', POPT_ARG_STRING, NULL, 'i',
5021		_
5022		("auxiliary initrd image for things other than the new kernel"),
5023		_("initrd-path")},
5024		{"lilo", 0, POPT_ARG_NONE, &configureLilo, 0,
5025		_("configure lilo bootloader")},
5026		{"make-default", 0, 0, &makeDefault, 0,
5027		_("make the newly added entry the default boot entry"), NULL},
5028		{"output-file", 'o', POPT_ARG_STRING, &outputFile, 0,
5029		_("path to output updated config file (\"-\" for stdout)"),
5030		_("path")},
5031		{"remove-args", 0, POPT_ARG_STRING, &removeArgs, 0,
5032		_("remove kernel arguments"), NULL},
5033		{"remove-mbargs", 0, POPT_ARG_STRING, &removeMBKernelArgs, 0,
5034		_("remove multiboot kernel arguments"), NULL},
5035		{"remove-kernel", 0, POPT_ARG_STRING, &removeKernelPath, 0,
5036		_("remove all entries for the specified kernel"),
5037		_("kernel-path")},
5038		{"remove-multiboot", 0, POPT_ARG_STRING, &removeMBKernel, 0,
5039		_("remove all entries for the specified multiboot kernel"),
5040		NULL},
5041		{"set-default", 0, POPT_ARG_STRING, &defaultKernel, 0,
5042		_("make the first entry referencing the specified kernel "
5043		"the default"), _("kernel-path")},
5044		{"set-default-index", 0, POPT_ARG_INT, &defaultIndex, 0,
5045		_("make the given entry index the default entry"),
5046		_("entry-index")},
5047		{"set-index", 0, POPT_ARG_INT, &newIndex, 0,
5048		_("use the given index when creating a new entry"),
5049		_("entry-index")},
5050		{"silo", 0, POPT_ARG_NONE, &configureSilo, 0,
5051		_("configure silo bootloader")},
5052		{"title", 0, POPT_ARG_STRING, &newKernelTitle, 0,
5053		_("title to use for the new kernel entry"), _("entry-title")},
5054		{"update-kernel", 0, POPT_ARG_STRING, &updateKernelPath, 0,
5055		_("updated information for the specified kernel"),
5056		_("kernel-path")},
5057		{"version", 'v', 0, NULL, 'v',
5058		_("print the version of this program and exit"), NULL},
5059		{"yaboot", 0, POPT_ARG_NONE, &configureYaboot, 0,
5060		_("configure yaboot bootloader")},
5061		{"zipl", 0, POPT_ARG_NONE, &configureZipl, 0,
5062		_("configure zipl bootloader")},
5063		POPT_AUTOHELP {0, 0, 0, 0, 0}
5064		};
5065
5066		useextlinuxmenu = 0;
5067
5068		int i = 0;
5069		for (int j = 1; j < argc; j++)
5070		i += strlen(argv[j]) + 1;
5071		saved_command_line = malloc(i);
5072		if (!saved_command_line) {
5073		fprintf(stderr, "grubby: %m\n");
5074		exit(1);
5075		}
5076		saved_command_line[0] = '\0';
5077		for (int j = 1; j < argc; j++) {
5078		strcat(saved_command_line, argv[j]);
5079		strncat(saved_command_line, j == argc - 1 ? "" : " ", 1);
5080		}
5081
5082		optCon = poptGetContext("grubby", argc, argv, options, 0);
5083		poptReadDefaultConfig(optCon, 1);
5084
5085		while ((arg = poptGetNextOpt(optCon)) >= 0) {
5086		switch (arg) {
5087		case 'v':
5088		printf("grubby version %s\n", VERSION);
5089		exit(0);
5090		break;
5091		case 'i':
5092		if (extraInitrdCount < MAX_EXTRA_INITRDS) {
5093		extraInitrds[extraInitrdCount++] =
5094		strdup(poptGetOptArg(optCon));
5095		} else {
5096		fprintf(stderr,
5097		_
5098		("grubby: extra initrd maximum is %d\n"),
5099		extraInitrdCount);
5100		return 1;
5101		}
5102		break;
5103		}
5104		}
5105
5106		if (arg < -1) {
5107		fprintf(stderr, _("grubby: bad argument %s: %s\n"),
5108		poptBadOption(optCon, POPT_BADOPTION_NOALIAS),
5109		poptStrerror(arg));
5110		return 1;
5111		}
5112
5113		if ((chptr = poptGetArg(optCon))) {
5114		fprintf(stderr, _("grubby: unexpected argument %s\n"), chptr);
5115		return 1;
5116		}
5117
5118		if ((configureLilo + configureGrub2 + configureGrub + configureELilo +
5119		configureYaboot + configureSilo + configureZipl +
5120		configureExtLinux) > 1) {
5121		fprintf(stderr,
5122		_("grubby: cannot specify multiple bootloaders\n"));
5123		return 1;
5124		} else if (bootloaderProbe && grubConfig) {
5125		fprintf(stderr,
5126		_
5127		("grubby: cannot specify config file with --bootloader-probe\n"));
5128		return 1;
5129		} else if (configureGrub2) {
5130		cfi = &grub2ConfigType;
5131		if (envPath)
5132		cfi->envFile = envPath;
5133		} else if (configureLilo) {
5134		cfi = &liloConfigType;
5135		} else if (configureGrub) {
5136		cfi = &grubConfigType;
5137		} else if (configureELilo) {
5138		cfi = &eliloConfigType;
5139		} else if (configureYaboot) {
5140		cfi = &yabootConfigType;
5141		} else if (configureSilo) {
5142		cfi = &siloConfigType;
5143		} else if (configureZipl) {
5144		cfi = &ziplConfigType;
5145		} else if (configureExtLinux) {
5146		cfi = &extlinuxConfigType;
5147		useextlinuxmenu = 1;
5148		}
5149
5150		if (!cfi) {
5151		if (grub2FindConfig(&grub2ConfigType)) {
5152		cfi = &grub2ConfigType;
5153		configureGrub2 = 1;
5154		if (envPath)
5155		cfi->envFile = envPath;
5156		} else {
5157		#ifdef __ia64__
5158		cfi = &eliloConfigType;
5159		configureLilo = 1;
5160		#elif defined(__powerpc__)
5161		cfi = &yabootConfigType;
5162		configureYaboot = 1;
5163		#elif defined(__sparc__)
5164		cfi = &siloConfigType;
5165		configureSilo = 1;
5166		#elif defined(__s390__) || defined(__s390x__)
5167		cfi = &ziplConfigType;
5168		configureZipl = 1;
5169		#else
5170		cfi = &grubConfigType;
5171		configureGrub = 1;
5172		#endif
5173		}
5174		}
5175
5176		if (!grubConfig) {
5177		if (cfi->findConfig)
5178		grubConfig = cfi->findConfig(cfi);
5179		if (!grubConfig)
5180		grubConfig = cfi->defaultConfig;
5181		}
5182
5183		if (bootloaderProbe && (displayDefault || kernelInfo ||
5184		newKernelPath || removeKernelPath || makeDefault
5185		|| defaultKernel || displayDefaultIndex
5186		|| displayDefaultTitle
5187		|| (defaultIndex >= 0))) {
5188		fprintf(stderr,
5189		_("grubby: --bootloader-probe may not be used with "
5190		"specified option"));
5191		return 1;
5192		}
5193
5194		if ((displayDefault || kernelInfo) && (newKernelPath ||
5195		removeKernelPath)) {
5196		fprintf(stderr, _("grubby: --default-kernel and --info may not "
5197		"be used when adding or removing kernels\n"));
5198		return 1;
5199		}
5200
5201		if (newKernelPath && !newKernelTitle) {
5202		fprintf(stderr, _("grubby: kernel title must be specified\n"));
5203		return 1;
5204		} else if (!newKernelPath && (copyDefault ||
5205		(newKernelInitrd && !updateKernelPath) ||
5206		makeDefault || extraInitrdCount > 0)) {
5207		fprintf(stderr, _("grubby: kernel path expected\n"));
5208		return 1;
5209		}
5210
5211		if (newKernelPath && updateKernelPath) {
5212		fprintf(stderr, _("grubby: --add-kernel and --update-kernel may"
5213		"not be used together"));
5214		return 1;
5215		}
5216
5217		if (makeDefault && defaultKernel) {
5218		fprintf(stderr, _("grubby: --make-default and --default-kernel "
5219		"may not be used together\n"));
5220		return 1;
5221		} else if (defaultKernel && removeKernelPath &&
5222		!strcmp(defaultKernel, removeKernelPath)) {
5223		fprintf(stderr,
5224		_("grubby: cannot make removed kernel the default\n"));
5225		return 1;
5226		} else if (defaultKernel && newKernelPath &&
5227		!strcmp(defaultKernel, newKernelPath)) {
5228		makeDefault = 1;
5229		defaultKernel = NULL;
5230		} else if (defaultKernel && (defaultIndex >= 0)) {
5231		fprintf(stderr,
5232		_("grubby: --set-default and --set-default-index "
5233		"may not be used together\n"));
5234		return 1;
5235		}
5236
5237		if (grubConfig && !strcmp(grubConfig, "-") && !outputFile) {
5238		fprintf(stderr,
5239		_("grubby: output file must be specified if stdin "
5240		"is used\n"));
5241		return 1;
5242		}
5243
5244		if (!removeKernelPath && !newKernelPath && !displayDefault
5245		&& !defaultKernel && !kernelInfo && !bootloaderProbe
5246		&& !updateKernelPath && !removeMBKernel && !displayDefaultIndex
5247		&& !displayDefaultTitle && (defaultIndex == -1)) {
5248		fprintf(stderr, _("grubby: no action specified\n"));
5249		return 1;
5250		}
5251
5252		flags |= badImageOkay ? GRUBBY_BADIMAGE_OKAY : 0;
5253
5254		if (cfi->needsBootPrefix) {
5255		if (!bootPrefix) {
5256		bootPrefix = findBootPrefix();
5257		if (!bootPrefix)
5258		return 1;
5259		} else {
5260		/* this shouldn't end with a / */
5261		if (bootPrefix[strlen(bootPrefix) - 1] == '/')
5262		bootPrefix[strlen(bootPrefix) - 1] = '\0';
5263		}
5264		} else {
5265		bootPrefix = "";
5266		}
5267
5268		if (!cfi->mbAllowExtraInitRds && extraInitrdCount > 0) {
5269		fprintf(stderr,
5270		_("grubby: %s doesn't allow multiple initrds\n"),
5271		cfi->defaultConfig);
5272		return 1;
5273		}
5274
5275		if (bootloaderProbe) {
5276		int lrc = 0, grc = 0, gr2c = 0, extrc = 0, yrc = 0, erc = 0;
5277		struct grubConfig *lconfig, *gconfig, *yconfig, *econfig;
5278
5279		const char *grub2config = grub2FindConfig(&grub2ConfigType);
5280		if (grub2config) {
5281		gconfig = readConfig(grub2config, &grub2ConfigType);
5282		if (!gconfig)
5283		gr2c = 1;
5284		else
5285		gr2c = checkForGrub2(gconfig);
5286		}
5287
5288		const char *grubconfig = grubFindConfig(&grubConfigType);
5289		if (!access(grubconfig, F_OK)) {
5290		gconfig = readConfig(grubconfig, &grubConfigType);
5291		if (!gconfig)
5292		grc = 1;
5293		else
5294		grc = checkForGrub(gconfig);
5295		}
5296
5297		if (!access(liloConfigType.defaultConfig, F_OK)) {
5298		lconfig =
5299		readConfig(liloConfigType.defaultConfig,
5300		&liloConfigType);
5301		if (!lconfig)
5302		lrc = 1;
5303		else
5304		lrc = checkForLilo(lconfig);
5305		}
5306
5307		if (!access(eliloConfigType.defaultConfig, F_OK)) {
5308		econfig = readConfig(eliloConfigType.defaultConfig,
5309		&eliloConfigType);
5310		if (!econfig)
5311		erc = 1;
5312		else
5313		erc = checkForElilo(econfig);
5314		}
5315
5316		if (!access(extlinuxConfigType.defaultConfig, F_OK)) {
5317		lconfig =
5318		readConfig(extlinuxConfigType.defaultConfig,
5319		&extlinuxConfigType);
5320		if (!lconfig)
5321		extrc = 1;
5322		else
5323		extrc = checkForExtLinux(lconfig);
5324		}
5325
5326		if (!access(yabootConfigType.defaultConfig, F_OK)) {
5327		yconfig = readConfig(yabootConfigType.defaultConfig,
5328		&yabootConfigType);
5329		if (!yconfig)
5330		yrc = 1;
5331		else
5332		yrc = checkForYaboot(yconfig);
5333		}
5334
5335		if (lrc == 1 || grc == 1 || gr2c == 1 || extrc == 1 || yrc == 1
5336		|| erc == 1)
5337		return 1;
5338
5339		if (lrc == 2)
5340		printf("lilo\n");
5341		if (gr2c == 2)
5342		printf("grub2\n");
5343		if (grc == 2)
5344		printf("grub\n");
5345		if (extrc == 2)
5346		printf("extlinux\n");
5347		if (yrc == 2)
5348		printf("yaboot\n");
5349		if (erc == 2)
5350		printf("elilo\n");
5351
5352		return 0;
5353		}
5354
5355		if (grubConfig == NULL) {
5356		printf("Could not find bootloader configuration file.\n");
5357		exit(1);
5358		}
5359
5360		config = readConfig(grubConfig, cfi);
5361		if (!config)
5362		return 1;
5363
5364		if (displayDefault) {
5365		struct singleLine *line;
5366		struct singleEntry *entry;
5367		size_t rs;
5368
5369		if (config->defaultImage == NO_DEFAULT_ENTRY)
5370		return 0;
5371		if (config->defaultImage == DEFAULT_SAVED_GRUB2 &&
5372		cfi->defaultIsSaved)
5373		config->defaultImage = FIRST_ENTRY_INDEX;
5374		entry = findEntryByIndex(config, config->defaultImage);
5375		if (!entry)
5376		return 0;
5377		if (!suitableImage(entry, bootPrefix, 0, flags))
5378		return 0;
5379
5380		line =
5381		getLineByType(LT_KERNEL | LT_HYPER | LT_KERNEL_EFI |
5382		LT_KERNEL_16, entry->lines);
5383		if (!line)
5384		return 0;
5385
5386		rs = getRootSpecifier(line->elements[1].item);
5387		printf("%s%s\n", bootPrefix, line->elements[1].item + rs);
5388
5389		return 0;
5390
5391		} else if (displayDefaultTitle) {
5392		struct singleLine *line;
5393		struct singleEntry *entry;
5394
5395		if (config->defaultImage == NO_DEFAULT_ENTRY)
5396		return 0;
5397		if (config->defaultImage == DEFAULT_SAVED_GRUB2 &&
5398		cfi->defaultIsSaved)
5399		config->defaultImage = FIRST_ENTRY_INDEX;
5400		entry = findEntryByIndex(config, config->defaultImage);
5401		if (!entry)
5402		return 0;
5403
5404		if (!configureGrub2) {
5405		char *title;
5406		line = getLineByType(LT_TITLE, entry->lines);
5407		if (!line)
5408		return 0;
5409		title = extractTitle(config, line);
5410		if (!title)
5411		return 0;
5412		printf("%s\n", title);
5413		free(title);
5414		} else {
5415		char *title;
5416
5417		dbgPrintf
5418		("This is GRUB2, default title is embeded in menuentry\n");
5419		line = getLineByType(LT_MENUENTRY, entry->lines);
5420		if (!line)
5421		return 0;
5422		title = grub2ExtractTitle(line);
5423		if (title)
5424		printf("%s\n", title);
5425		}
5426		return 0;
5427
5428		} else if (displayDefaultIndex) {
5429		if (config->defaultImage == NO_DEFAULT_ENTRY)
5430		return 0;
5431		if (config->defaultImage == DEFAULT_SAVED_GRUB2 &&
5432		cfi->defaultIsSaved)
5433		config->defaultImage = FIRST_ENTRY_INDEX;
5434		printf("%i\n", config->defaultImage);
5435		return 0;
5436
5437		} else if (kernelInfo)
5438		return displayInfo(config, kernelInfo, bootPrefix);
5439
5440		if (copyDefault) {
5441		template = findTemplate(config, bootPrefix, NULL, 0, flags);
5442		if (!template)
5443		return 1;
5444		}
5445
5446		markRemovedImage(config, removeKernelPath, bootPrefix);
5447		markRemovedImage(config, removeMBKernel, bootPrefix);
5448		setDefaultImage(config, newKernelPath != NULL, defaultKernel,
5449		makeDefault, bootPrefix, flags, defaultIndex,
5450		newIndex);
5451		setFallbackImage(config, newKernelPath != NULL);
5452		if (updateImage(config, updateKernelPath, bootPrefix, newKernelArgs,
5453		removeArgs, newMBKernelArgs, removeMBKernelArgs))
5454		return 1;
5455		if (updateKernelPath && newKernelInitrd) {
5456		if (newMBKernel) {
5457		if (addMBInitrd(config, newMBKernel, updateKernelPath,
5458		bootPrefix, newKernelInitrd,
5459		newKernelTitle))
5460		return 1;
5461		} else {
5462		if (updateInitrd(config, updateKernelPath, bootPrefix,
5463		newKernelInitrd, newKernelTitle))
5464		return 1;
5465		}
5466		}
5467		if (addNewKernel(config, template, bootPrefix, newKernelPath,
5468		newKernelTitle, newKernelArgs, newKernelInitrd,
5469		(const char **)extraInitrds, extraInitrdCount,
5470		newMBKernel, newMBKernelArgs, newDevTreePath,
5471		newIndex))
5472		return 1;
5473
5474		if (numEntries(config) == 0) {
5475		fprintf(stderr,
5476		_("grubby: doing this would leave no kernel entries. "
5477		"Not writing out new config.\n"));
5478		return 1;
5479		}
5480
5481	if (!outputFile)	if (!outputFile)
5482	outputFile = grubConfig;	outputFile = (char *)grubConfig;
5483
5484	return writeConfig(config, outputFile, bootPrefix);	return writeConfig(config, outputFile, bootPrefix);
5485	}	}

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Legend: Removed from v.1693   changed lines   Added in v.3138