Diff of /trunk/grubby/grubby.c

Parent Directory | Revision Log | Patch

	revision 1692 by niro, Fri Feb 17 23:14:54 2012 UTC	revision 3029 by niro, Tue Jun 27 14:46:56 2017 UTC
#	Line 36	Line 36
36	#include <signal.h>	#include <signal.h>
37	#include <blkid/blkid.h>	#include <blkid/blkid.h>
38
39		#include "log.h"
40
41		#ifndef DEBUG
42	#define DEBUG 0	#define DEBUG 0
43		#endif
44
45	#if DEBUG	#if DEBUG
46	#define dbgPrintf(format, args...) fprintf(stderr, format , ## args)	#define dbgPrintf(format, args...) fprintf(stderr, format , ## args)
#	Line 44	Line 48
48	#define dbgPrintf(format, args...)	#define dbgPrintf(format, args...)
49	#endif	#endif
50
51		int debug = 0; /* Currently just for template debugging */
52
53	#define _(A) (A)	#define _(A) (A)
54
55	#define MAX_EXTRA_INITRDS  16 /* code segment checked by --bootloader-probe */	#define MAX_EXTRA_INITRDS  16 /* code segment checked by --bootloader-probe */
56	#define CODE_SEG_SIZE  128 /* code segment checked by --bootloader-probe */	#define CODE_SEG_SIZE  128 /* code segment checked by --bootloader-probe */
57
58		#define NOOP_OPCODE 0x90
59		#define JMP_SHORT_OPCODE 0xeb
60
61		int isEfi = 0;
62
63		#if defined(__aarch64__)
64		#define isEfiOnly 1
65		#else
66		#define isEfiOnly 0
67		#endif
68
69		char *saved_command_line = NULL;
70
71	/* comments get lumped in with indention */	/* comments get lumped in with indention */
72	struct lineElement {	struct lineElement {
73	char * item;	char *item;
74	char * indent;	char *indent;
75	};	};
76
77	enum lineType_e {	enum lineType_e {
78	LT_WHITESPACE = 1 << 0,	LT_UNIDENTIFIED = 0,
79	LT_TITLE      = 1 << 1,	LT_WHITESPACE = 1 << 0,
80	LT_KERNEL     = 1 << 2,	LT_TITLE = 1 << 1,
81	LT_INITRD     = 1 << 3,	LT_KERNEL = 1 << 2,
82	LT_HYPER      = 1 << 4,	LT_INITRD = 1 << 3,
83	LT_DEFAULT    = 1 << 5,	LT_HYPER = 1 << 4,
84	LT_MBMODULE   = 1 << 6,	LT_DEFAULT = 1 << 5,
85	LT_ROOT       = 1 << 7,	LT_MBMODULE = 1 << 6,
86	LT_FALLBACK   = 1 << 8,	LT_ROOT = 1 << 7,
87	LT_KERNELARGS = 1 << 9,	LT_FALLBACK = 1 << 8,
88	LT_BOOT       = 1 << 10,	LT_KERNELARGS = 1 << 9,
89	LT_BOOTROOT   = 1 << 11,	LT_BOOT = 1 << 10,
90	LT_LBA        = 1 << 12,	LT_BOOTROOT = 1 << 11,
91	LT_OTHER      = 1 << 13,	LT_LBA = 1 << 12,
92	LT_GENERIC    = 1 << 14,	LT_OTHER = 1 << 13,
93	LT_UNKNOWN    = 1 << 15,	LT_GENERIC = 1 << 14,
94		LT_ECHO = 1 << 16,
95		LT_MENUENTRY = 1 << 17,
96		LT_ENTRY_END = 1 << 18,
97		LT_SET_VARIABLE = 1 << 19,
98		LT_KERNEL_EFI = 1 << 20,
99		LT_INITRD_EFI = 1 << 21,
100		LT_KERNEL_16 = 1 << 22,
101		LT_INITRD_16 = 1 << 23,
102		LT_DEVTREE = 1 << 24,
103		LT_UNKNOWN = 1 << 25,
104	};	};
105
106	struct singleLine {	struct singleLine {
107	char * indent;	char *indent;
108	int numElements;	int numElements;
109	struct lineElement * elements;	struct lineElement *elements;
110	struct singleLine * next;	struct singleLine *next;
111	enum lineType_e type;	enum lineType_e type;
112	};	};
113
114	struct singleEntry {	struct singleEntry {
115	struct singleLine * lines;	struct singleLine *lines;
116	int skip;	int skip;
117	int multiboot;	int multiboot;
118	struct singleEntry * next;	struct singleEntry *next;
119	};	};
120
121	#define GRUBBY_BADIMAGE_OKAY (1 << 0)	#define GRUBBY_BADIMAGE_OKAY (1 << 0)
#	Line 99  struct singleEntry {	Line 128  struct singleEntry {
128	#define NEED_TITLE   (1 << 2)	#define NEED_TITLE   (1 << 2)
129	#define NEED_ARGS    (1 << 3)	#define NEED_ARGS    (1 << 3)
130	#define NEED_MB      (1 << 4)	#define NEED_MB      (1 << 4)
131		#define NEED_END     (1 << 5)
132		#define NEED_DEVTREE (1 << 6)
133
134	#define MAIN_DEFAULT    (1 << 0)	#define MAIN_DEFAULT    (1 << 0)
135		#define FIRST_ENTRY_INDEX    0 /* boot entry index value begin and increment
136		from this initial value */
137		#define NO_DEFAULT_ENTRY    -1 /* indicates that no specific default boot
138		entry was set or currently exists */
139	#define DEFAULT_SAVED       -2	#define DEFAULT_SAVED       -2
140		#define DEFAULT_SAVED_GRUB2 -3
141
142	struct keywordTypes {	struct keywordTypes {
143	char * key;	char *key;
144	enum lineType_e type;	enum lineType_e type;
145	char nextChar;	char nextChar;
146	char separatorChar;	char separatorChar;
147	};	};
148
149		struct configFileInfo;
150
151		typedef const char *(*findConfigFunc) (struct configFileInfo *);
152		typedef const int (*writeLineFunc) (struct configFileInfo *,
153		struct singleLine * line);
154		typedef char *(*getEnvFunc) (struct configFileInfo *, char *name);
155		typedef int (*setEnvFunc) (struct configFileInfo *, char *name, char *value);
156
157	struct configFileInfo {	struct configFileInfo {
158	char * defaultConfig;	char *defaultConfig;
159	struct keywordTypes * keywords;	findConfigFunc findConfig;
160	int defaultIsIndex;	writeLineFunc writeLine;
161	int defaultSupportSaved;	getEnvFunc getEnv;
162	enum lineType_e entrySeparator;	setEnvFunc setEnv;
163	int needsBootPrefix;	struct keywordTypes *keywords;
164	int argsInQuotes;	int caseInsensitive;
165	int maxTitleLength;	int defaultIsIndex;
166	int titleBracketed;	int defaultIsVariable;
167	int mbHyperFirst;	int defaultSupportSaved;
168	int mbInitRdIsModule;	int defaultIsSaved;
169	int mbConcatArgs;	int defaultIsUnquoted;
170	int mbAllowExtraInitRds;	enum lineType_e entryStart;
171		enum lineType_e entryEnd;
172		int needsBootPrefix;
173		int argsInQuotes;
174		int maxTitleLength;
175		int titleBracketed;
176		int titlePosition;
177		int mbHyperFirst;
178		int mbInitRdIsModule;
179		int mbConcatArgs;
180		int mbAllowExtraInitRds;
181		char *envFile;
182	};	};
183
184	struct keywordTypes grubKeywords[] = {	struct keywordTypes grubKeywords[] = {
185	{ "title",    LT_TITLE,    ' ' },	{"title", LT_TITLE, ' '},
186	{ "root",    LT_BOOTROOT,    ' ' },	{"root", LT_BOOTROOT, ' '},
187	{ "default",    LT_DEFAULT,    ' ' },	{"default", LT_DEFAULT, ' '},
188	{ "fallback",   LT_FALLBACK,    ' ' },	{"fallback", LT_FALLBACK, ' '},
189	{ "kernel",    LT_KERNEL,    ' ' },	{"kernel", LT_KERNEL, ' '},
190	{ "initrd",    LT_INITRD,    ' ', ' ' },	{"initrd", LT_INITRD, ' ', ' '},
191	{ "module",     LT_MBMODULE,    ' ' },	{"module", LT_MBMODULE, ' '},
192	{ "kernel",     LT_HYPER,       ' ' },	{"kernel", LT_HYPER, ' '},
193	{ NULL,    0, 0 },	{NULL, 0, 0},
194	};	};
195
196		const char *grubFindConfig(struct configFileInfo *cfi)
197		{
198		static const char *configFiles[] = {
199		"/boot/grub/grub.conf",
200		"/boot/grub/menu.lst",
201		"/etc/grub.conf",
202		NULL
203		};
204		static int i = -1;
205
206		if (i == -1) {
207		for (i = 0; configFiles[i] != NULL; i++) {
208		dbgPrintf("Checking \"%s\": ", configFiles[i]);
209		if (!access(configFiles[i], R_OK)) {
210		dbgPrintf("found\n");
211		return configFiles[i];
212		}
213		dbgPrintf("not found\n");
214		}
215		}
216		return configFiles[i];
217		}
218
219	struct configFileInfo grubConfigType = {	struct configFileInfo grubConfigType = {
220	.defaultConfig = "/boot/grub/grub.conf",	.findConfig = grubFindConfig,
221	.keywords = grubKeywords,	.keywords = grubKeywords,
222	.defaultIsIndex = 1,	.defaultIsIndex = 1,
223	.defaultSupportSaved = 1,	.defaultSupportSaved = 1,
224	.entrySeparator = 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	.entrySeparator = 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	.entrySeparator = 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	.entrySeparator = 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	.entrySeparator = 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	.entrySeparator = 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	.entrySeparator = 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 char *getRootSpecifier(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 isEntrySeparator(struct singleLine * line,	static enum lineType_e getTypeByKeyword(char *keyword,
849	struct configFileInfo * cfi) {	struct configFileInfo *cfi)
850	return line->type == cfi->entrySeparator || line->type == LT_OTHER ||	{
851	(cfi->titleBracketed && isBracketedTitle(line));	for (struct keywordTypes * kw = cfi->keywords; kw->key; kw++) {
852		if (!kwcmp(kw, keyword, cfi->caseInsensitive))
853		return kw->type;
854		}
855		return LT_UNKNOWN;
856	}	}
857
858	/* extract the title from within brackets (for zipl) */	static struct singleLine *getLineByType(enum lineType_e type,
859	static char * extractTitle(struct singleLine * line) {	struct singleLine *line)
860	/* bracketed title... let's extract it (leaks a byte) */	{
861	char * title;	dbgPrintf("getLineByType(%d): ", type);
862	title = strdup(line->elements[0].item);	for (; line; line = line->next) {
863	title++;	dbgPrintf("%d:%s ", line->type,
864	*(title + strlen(title) - 1) = '\0';	line->numElements ? line->elements[0].
865	return title;	item : "(empty)");
866	}	if (line->type & type)
867		break;
868	static int readFile(int fd, char ** bufPtr) {	}
869	int alloced = 0, size = 0, i = 0;	dbgPrintf(line ? "\n" : " (failed)\n");
870	char * buf = NULL;	return line;
871		}
	do {
	size += i;
	if ((size + 1024) > alloced) {
	alloced += 4096;
	buf = realloc(buf, alloced + 1);
	}
	} while ((i = read(fd, buf + size, 1024)) > 0);
	if (i < 0) {
	fprintf(stderr, _("error reading input: %s\n"), strerror(errno));
	free(buf);
	return 1;
	}
872
873	buf = realloc(buf, size + 2);	static int isBracketedTitle(struct singleLine *line)
874	if (size == 0)	{
875	buf[size++] = '\n';	if (line->numElements == 1 && *line->elements[0].item == '[') {
876	else	int len = strlen(line->elements[0].item);
877	if (buf[size - 1] != '\n')	if (*(line->elements[0].item + len - 1) == ']') {
878	buf[size++] = '\n';	/* FIXME: this is a hack... */
879	buf[size] = '\0';	if (strcmp(line->elements[0].item, "[defaultboot]")) {
880		return 1;
881		}
882		}
883		}
884		return 0;
885		}
886
887	*bufPtr = buf;	static int isEntryStart(struct singleLine *line, struct configFileInfo *cfi)
888		{
889		return line->type == cfi->entryStart || line->type == LT_OTHER ||
890		(cfi->titleBracketed && isBracketedTitle(line));
891		}
892
893	return 0;	/* extract the title from within brackets (for zipl) */
894		static char *extractTitle(struct grubConfig *cfg, struct singleLine *line)
895		{
896		/* bracketed title... let's extract it */
897		char *title = NULL;
898		if (line->type == LT_TITLE) {
899		char *tmp = line->elements[cfg->cfi->titlePosition].item;
900		if (cfg->cfi->titleBracketed) {
901		tmp++;
902		title = strdup(tmp);
903		*(title + strlen(title) - 1) = '\0';
904		} else {
905		title = strdup(tmp);
906		}
907		} else if (line->type == LT_MENUENTRY)
908		title = strdup(line->elements[1].item);
909		else
910		return NULL;
911		return title;
912	}	}
913
914	static void lineInit(struct singleLine * line) {	static int readFile(int fd, char **bufPtr)
915	line->indent = NULL;	{
916	line->elements = NULL;	int alloced = 0, size = 0, i = 0;
917	line->numElements = 0;	char *buf = NULL;
	line->next = NULL;
	}
	struct singleLine * lineDup(struct singleLine * line) {
	int i;
	struct singleLine * newLine = malloc(sizeof(*newLine));
	newLine->indent = strdup(line->indent);
	newLine->next = NULL;
	newLine->type = line->type;
	newLine->numElements = line->numElements;
	newLine->elements = malloc(sizeof(*newLine->elements) *
	newLine->numElements);
	for (i = 0; i < newLine->numElements; i++) {
	newLine->elements[i].indent = strdup(line->elements[i].indent);
	newLine->elements[i].item = strdup(line->elements[i].item);
	}
918
919	return newLine;	do {
920	}	size += i;
921		if ((size + 1024) > alloced) {
922		alloced += 4096;
923		buf = realloc(buf, alloced + 1);
924		}
925		} while ((i = read(fd, buf + size, 1024)) > 0);
926
927	static void lineFree(struct singleLine * line) {	if (i < 0) {
928	int i;	fprintf(stderr, _("error reading input: %s\n"),
929		strerror(errno));
930		free(buf);
931		return 1;
932		}
933
934	if (line->indent) free(line->indent);	buf = realloc(buf, size + 2);
935		if (size == 0)
936		buf[size++] = '\n';
937		else if (buf[size - 1] != '\n')
938		buf[size++] = '\n';
939		buf[size] = '\0';
940
941	for (i = 0; i < line->numElements; i++) {	*bufPtr = buf;
	free(line->elements[i].item);
	free(line->elements[i].indent);
	}
942
943	if (line->elements) free(line->elements);	return 0;
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 (isEntrySeparator(line, cfi)) {
	sawEntry = 1;
	if (!entry) {
	cfg->entries = malloc(sizeof(*entry));
	entry = cfg->entries;
	} else {
	entry->next = malloc(sizeof(*entry));
	entry = entry->next;
	}
1196
1197	entry->skip = 0;	while (*p != kw->separatorChar
1198	entry->multiboot = 0;	&& *p != '\0')
1199	entry->lines = NULL;	p++;
1200	entry->next = NULL;	if (*p == '\0') {
1201	}	break;
1202		}
1203	if (line->type == LT_DEFAULT && line->numElements == 2) {
1204	cfg->flags &= ~GRUB_CONFIG_NO_DEFAULT;	line->elements[i + 1].indent =
1205	defaultLine = line;	line->elements[i].indent;
1206		line->elements[i].indent =
1207	} else if (line->type == LT_KERNEL) {	strdup(indent);
1208	/* if by some freak chance this is multiboot and the "module"	*p++ = '\0';
1209	* lines came earlier in the template, make sure to use LT_HYPER	i++;
1210	* instead of LT_KERNEL now	line->elements[i].item =
1211	*/	strdup(p);
1212	if (entry->multiboot)	}
1213	line->type = LT_HYPER;	}
1214		}
1215	} else if (line->type == LT_MBMODULE) {	} else if (line->type == LT_SET_VARIABLE) {
1216	/* go back and fix the LT_KERNEL line to indicate LT_HYPER	/* and if it's a "set blah=" we need to split it
1217	* instead, now that we know this is a multiboot entry.	* yet a third way to avoid rhbz# XXX FIXME :/
1218	* This only applies to grub, but that's the only place we	*/
1219	* should find LT_MBMODULE lines anyway.	char *eq;
1220	*/	int l;
1221	struct singleLine * l;	int numElements = line->numElements;
1222	for (l = entry->lines; l; l = l->next) {	struct lineElement *newElements;
1223	if (l->type == LT_HYPER)	eq = strchr(line->elements[1].item, '=');
1224	break;	if (!eq)
1225	else if (l->type == LT_KERNEL) {	return 0;
1226	l->type = LT_HYPER;	l = eq - line->elements[1].item;
1227	break;	if (eq[1] != 0)
1228	}	numElements++;
1229	}	newElements = calloc(numElements,sizeof (*newElements));
1230	entry->multiboot = 1;	memcpy(&newElements[0], &line->elements[0],
1231		sizeof (newElements[0]));
1232	} else if (line->type == LT_HYPER) {	newElements[1].item =
1233	entry->multiboot = 1;	strndup(line->elements[1].item, l);
1234		newElements[1].indent = "=";
1235	} else if (line->type == LT_FALLBACK && line->numElements == 2) {	*(eq++) = '\0';
1236	cfg->fallbackImage = strtol(line->elements[1].item, &end, 10);	newElements[2].item = strdup(eq);
1237	if (*end) cfg->fallbackImage = -1;	free(line->elements[1].item);
1238		if (line->elements[1].indent)
1239	} else if (line->type == LT_TITLE && line->numElements > 1) {	newElements[2].indent = line->elements[1].indent;
1240	/* make the title a single argument (undoing our parsing) */	for (int i = 2; i < line->numElements; i++) {
1241	len = 0;	newElements[i+1].item = line->elements[i].item;
1242	for (i = 1; i < line->numElements; i++) {	newElements[i+1].indent =
1243	len += strlen(line->elements[i].item);	line->elements[i].indent;
1244	len += strlen(line->elements[i].indent);	}
1245	}	free(line->elements);
1246	buf = malloc(len + 1);	line->elements = newElements;
1247	*buf = '\0';	line->numElements = numElements;
1248		}
1249		}
1250
1251	for (i = 1; i < line->numElements; i++) {	return 0;
1252	strcat(buf, line->elements[i].item);	}
	free(line->elements[i].item);
1253
1254	if ((i + 1) != line->numElements) {	static int isnumber(const char *s)
1255	strcat(buf, line->elements[i].indent);	{
1256	free(line->elements[i].indent);	int i;
1257	}	for (i = 0; s[i] != '\0'; i++)
1258	}	if (s[i] < '0' || s[i] > '9')
1259		return 0;
1260	line->elements[1].indent =	return i;
1261	line->elements[line->numElements - 1].indent;	}
	line->elements[1].item = buf;
	line->numElements = 2;
	} else if (line->type == LT_KERNELARGS && cfi->argsInQuotes) {
	/* Strip off any " which may be present; they'll be put back
	on write. This is one of the few (the only?) places that grubby
	canonicalizes the output */
	if (line->numElements >= 2) {
	int last, len;
	if (*line->elements[1].item == '"')
	memmove(line->elements[1].item, line->elements[1].item + 1,
	strlen(line->elements[1].item + 1) + 1);
	last = line->numElements - 1;
	len = strlen(line->elements[last].item) - 1;
	if (line->elements[last].item[len] == '"')
	line->elements[last].item[len] = '\0';
	}
	}
	/* If we find a generic config option which should live at the
	top of the file, move it there. Old versions of grubby were
	probably responsible for putting new images in the wrong
	place in front of it anyway. */
	if (sawEntry && line->type == LT_GENERIC) {
	struct singleLine **l = &cfg->theLines;
	struct singleLine **last_nonws = &cfg->theLines;
	while (*l) {
	if ((*l)->type != LT_WHITESPACE)
	last_nonws = &((*l)->next);
	l = &((*l)->next);
	}
	line->next = *last_nonws;
	*last_nonws = line;
	movedLine = 1;
	continue; /* without setting 'last' */
	}
	/* If a second line of whitespace happens after a generic option
	which was moved, drop it. */
	if (movedLine && line->type == LT_WHITESPACE && last->type == LT_WHITESPACE) {
	lineFree(line);
	free(line);
	movedLine = 0;
	continue;
	}
	movedLine = 0;
1262
1263	if (sawEntry) {	static struct grubConfig *readConfig(const char *inName,
1264	if (!entry->lines)	struct configFileInfo *cfi)
1265	entry->lines = line;	{
1266	else	int in;
1267	last->next = line;	char *incoming = NULL, *head;
1268	dbgPrintf("readConfig added %d to %p\n", line->type, entry);	int rc;
1269		int sawEntry = 0;
1270		int movedLine = 0;
1271		struct grubConfig *cfg;
1272		struct singleLine *last = NULL, *line, *defaultLine = NULL;
1273		char *end;
1274		struct singleEntry *entry = NULL;
1275		int len;
1276		char *buf;
1277
1278		if (inName == NULL) {
1279		printf("Could not find bootloader configuration\n");
1280		exit(1);
1281		} else if (!strcmp(inName, "-")) {
1282		in = 0;
1283	} else {	} else {
1284	if (!cfg->theLines)	if ((in = open(inName, O_RDONLY)) < 0) {
1285	cfg->theLines = line;	fprintf(stderr, _("error opening %s for read: %s\n"),
1286	else	inName, strerror(errno));
1287	last->next = line;	return NULL;
1288	dbgPrintf("readConfig added %d to cfg\n", line->type);	}
1289	}	}
1290
1291	last = line;	rc = readFile(in, &incoming);
1292	}	close(in);
1293		if (rc)
1294		return NULL;
1295
1296		head = incoming;
1297		cfg = malloc(sizeof(*cfg));
1298		cfg->primaryIndent = strdup("");
1299		cfg->secondaryIndent = strdup("\t");
1300		cfg->flags = GRUB_CONFIG_NO_DEFAULT;
1301		cfg->cfi = cfi;
1302		cfg->theLines = NULL;
1303		cfg->entries = NULL;
1304		cfg->fallbackImage = 0;
1305		cfg->isModified = 0;
1306
1307		/* copy everything we have */
1308		while (*head) {
1309		line = malloc(sizeof(*line));
1310		lineInit(line);
1311
1312		if (getNextLine(&head, line, cfi)) {
1313		free(line);
1314		/* XXX memory leak of everything in cfg */
1315		return NULL;
1316		}
1317
1318	free(incoming);	if (!sawEntry && line->numElements) {
1319		free(cfg->primaryIndent);
1320		cfg->primaryIndent = strdup(line->indent);
1321		} else if (line->numElements) {
1322		free(cfg->secondaryIndent);
1323		cfg->secondaryIndent = strdup(line->indent);
1324		}
1325
1326	if (defaultLine) {	if (isEntryStart(line, cfi) || (cfg->entries && !sawEntry)) {
1327	if (cfi->defaultSupportSaved &&	sawEntry = 1;
1328	!strncmp(defaultLine->elements[1].item, "saved", 5)) {	if (!entry) {
1329	cfg->defaultImage = DEFAULT_SAVED;	cfg->entries = malloc(sizeof(*entry));
1330	} else if (cfi->defaultIsIndex) {	entry = cfg->entries;
1331	cfg->defaultImage = strtol(defaultLine->elements[1].item, &end, 10);	} else {
1332	if (*end) cfg->defaultImage = -1;	entry->next = malloc(sizeof(*entry));
1333	} else if (defaultLine->numElements >= 2) {	entry = entry->next;
1334	i = 0;	}
	while ((entry = findEntryByIndex(cfg, i))) {
	for (line = entry->lines; line; line = line->next)
	if (line->type == LT_TITLE) break;
	if (!cfi->titleBracketed) {
	if (line && (line->numElements >= 2) &&
	!strcmp(defaultLine->elements[1].item,
	line->elements[1].item)) break;
	} else if (line) {
	if (!strcmp(defaultLine->elements[1].item,
	extractTitle(line))) break;
	}
	i++;
	entry = NULL;
	}
1335
1336	if (entry){	entry->skip = 0;
1337	cfg->defaultImage = i;	entry->multiboot = 0;
1338	}else{	entry->lines = NULL;
1339	cfg->defaultImage = -1;	entry->next = NULL;
1340	}	}
	}
	} else {
	cfg->defaultImage = 0;
	}
1341
1342	return cfg;	if (line->type == LT_SET_VARIABLE) {
1343	}	dbgPrintf("found 'set' command (%d elements): ",
1344		line->numElements);
1345		dbgPrintf("%s", line->indent);
1346		for (int i = 0; i < line->numElements; i++)
1347		dbgPrintf("\"%s\"%s", line->elements[i].item,
1348		line->elements[i].indent);
1349		dbgPrintf("\n");
1350		struct keywordTypes *kwType =
1351		getKeywordByType(LT_DEFAULT, cfi);
1352		if (kwType && line->numElements == 3
1353		&& !strcmp(line->elements[1].item, kwType->key)
1354		&& !is_special_grub2_variable(
1355		line->elements[2].item)) {
1356		dbgPrintf("Line sets default config\n");
1357		cfg->flags &= ~GRUB_CONFIG_NO_DEFAULT;
1358		defaultLine = line;
1359		}
1360		} else if (iskernel(line->type)) {
1361		/* if by some freak chance this is multiboot and the
1362		* "module" lines came earlier in the template, make
1363		* sure to use LT_HYPER instead of LT_KERNEL now
1364		*/
1365		if (entry && entry->multiboot)
1366		line->type = LT_HYPER;
1367
1368	static void writeDefault(FILE * out, char * indent,	} else if (line->type == LT_MBMODULE) {
1369	char * separator, struct grubConfig * cfg) {	/* go back and fix the LT_KERNEL line to indicate
1370	struct singleEntry * entry;	* LT_HYPER instead, now that we know this is a
1371	struct singleLine * line;	* multiboot entry.  This only applies to grub, but
1372	int i;	* that's the only place we should find LT_MBMODULE
1373		* lines anyway.
1374		*/
1375		for (struct singleLine * l = entry->lines; l;
1376		l = l->next) {
1377		if (l->type == LT_HYPER)
1378		break;
1379		else if (iskernel(l->type)) {
1380		l->type = LT_HYPER;
1381		break;
1382		}
1383		}
1384		entry->multiboot = 1;
1385
1386	if (!cfg->defaultImage && cfg->flags == GRUB_CONFIG_NO_DEFAULT) return;	} else if (line->type == LT_HYPER) {
1387		entry->multiboot = 1;
1388
1389	if (cfg->defaultImage == DEFAULT_SAVED)	} else if (line->type == LT_FALLBACK && line->numElements == 2) {
1390	fprintf(out, "%sdefault%ssaved\n", indent, separator);	cfg->fallbackImage =
1391	else if (cfg->defaultImage > -1) {	strtol(line->elements[1].item, &end, 10);
1392	if (cfg->cfi->defaultIsIndex) {	if (*end)
1393	fprintf(out, "%sdefault%s%d\n", indent, separator,	cfg->fallbackImage = -1;
1394	cfg->defaultImage);
1395	} else {	} else if ((line->type == LT_DEFAULT && cfi->defaultIsUnquoted)
1396	int image = cfg->defaultImage;	|| (line->type == LT_TITLE
1397		&& line->numElements > 1)) {
1398		/* make the title/default a single argument (undoing
1399		* our parsing) */
1400		len = 0;
1401		for (int i = 1; i < line->numElements; i++) {
1402		len += strlen(line->elements[i].item);
1403		len += strlen(line->elements[i].indent);
1404		}
1405		buf = malloc(len + 1);
1406		*buf = '\0';
1407
1408	entry = cfg->entries;	for (int i = 1; i < line->numElements; i++) {
1409	while (entry && entry->skip) entry = entry->next;	strcat(buf, line->elements[i].item);
1410		free(line->elements[i].item);
1411
1412		if ((i + 1) != line->numElements) {
1413		strcat(buf, line->elements[i].indent);
1414		free(line->elements[i].indent);
1415		}
1416		}
1417
1418	i = 0;	line->elements[1].indent =
1419	while (entry && i < image) {	line->elements[line->numElements - 1].indent;
1420	entry = entry->next;	line->elements[1].item = buf;
1421		line->numElements = 2;
1422		} else if (line->type == LT_MENUENTRY && line->numElements > 3) {
1423		/* let --remove-kernel="TITLE=what" work */
1424		len = 0;
1425		char *extras;
1426		char *title;
1427		/* initially unseen value */
1428		char quote_char = '\0';
1429
1430		for (int i = 1; i < line->numElements; i++) {
1431		len += strlen(line->elements[i].item);
1432		len += strlen(line->elements[i].indent);
1433		}
1434		buf = malloc(len + 1);
1435		*buf = '\0';
1436
1437	while (entry && entry->skip) entry = entry->next;	/* allocate mem for extra flags. */
1438	i++;	extras = malloc(len + 1);
1439	}	*extras = '\0';
1440
1441		/* get title. */
1442		for (int i = 0; i < line->numElements; i++) {
1443		if (!strcmp
1444		(line->elements[i].item, "menuentry"))
1445		continue;
1446		if (isquote(*line->elements[i].item)
1447		&& quote_char == '\0') {
1448		/* ensure we properly pair off quotes */
1449		quote_char = *line->elements[i].item;
1450		title = line->elements[i].item + 1;
1451		} else {
1452		title = line->elements[i].item;
1453		}
1454
1455	if (!entry) return;	len = strlen(title);
1456		if (title[len - 1] == quote_char) {
1457		strncat(buf, title, len - 1);
1458		break;
1459		} else {
1460		strcat(buf, title);
1461		strcat(buf, line->elements[i].indent);
1462		}
1463		}
1464
1465	line = getLineByType(LT_TITLE, entry->lines);	/* get extras */
1466		int count = 0;
1467		quote_char = '\0';
1468		for (int i = 0; i < line->numElements; i++) {
1469		if (count >= 2) {
1470		strcat(extras, line->elements[i].item);
1471		strcat(extras,
1472		line->elements[i].indent);
1473		}
1474
1475	if (line && line->numElements >= 2)	if (!strcmp
1476	fprintf(out, "%sdefault%s%s\n", indent, separator,	(line->elements[i].item, "menuentry"))
1477	line->elements[1].item);	continue;
1478	else if (line && (line->numElements == 1) &&
1479	cfg->cfi->titleBracketed) {	/* count ' or ", there should be two in menuentry line. */
1480	fprintf(out, "%sdefault%s%s\n", indent, separator,	if (isquote(*line->elements[i].item)
1481	extractTitle(line));	&& quote_char == '\0') {
1482	}	/* ensure we properly pair off quotes */
1483	}	quote_char = *line->elements[i].item;
1484	}	count++;
1485	}	}
1486
1487	static int writeConfig(struct grubConfig * cfg, char * outName,	len = strlen(line->elements[i].item);
	const char * prefix) {
	FILE * out;
	struct singleLine * line;
	struct singleEntry * entry;
	char * tmpOutName;
	int needs = MAIN_DEFAULT;
	struct stat sb;
	int i;
	if (!strcmp(outName, "-")) {
	out = stdout;
	tmpOutName = NULL;
	} else {
	if (!lstat(outName, &sb) && S_ISLNK(sb.st_mode)) {
	char * buf;
	int len = 256;
	int rc;
	/* most likely the symlink is relative, so change our
	directory to the dir of the symlink */
	rc = chdir(dirname(strdupa(outName)));
	do {
	buf = alloca(len + 1);
	rc = readlink(basename(outName), buf, len);
	if (rc == len) len += 256;
	} while (rc == len);
	if (rc < 0) {
	fprintf(stderr, _("grubby: error readlink link %s: %s\n"),
	outName, strerror(errno));
	return 1;
	}
	outName = buf;
	outName[rc] = '\0';
	}
	tmpOutName = alloca(strlen(outName) + 2);
	sprintf(tmpOutName, "%s-", outName);
	out = fopen(tmpOutName, "w");
	if (!out) {
	fprintf(stderr, _("grubby: error creating %s: %s\n"), tmpOutName,
	strerror(errno));
	return 1;
	}
	if (!stat(outName, &sb)) {
	if (chmod(tmpOutName, sb.st_mode & ~(S_IFMT))) {
	fprintf(stderr, _("grubby: error setting perms on %s: %s\n"),
	tmpOutName, strerror(errno));
	fclose(out);
	unlink(tmpOutName);
	return 1;
	}
	}
	}
1488
1489	line = cfg->theLines;	if (line->elements[i].item[len - 1] ==
1490	while (line) {	quote_char)
1491	if (line->type == LT_DEFAULT) {	count++;
	writeDefault(out, line->indent, line->elements[0].indent, cfg);
	needs &= ~MAIN_DEFAULT;
	} else if (line->type == LT_FALLBACK) {
	if (cfg->fallbackImage > -1)
	fprintf(out, "%s%s%s%d\n", line->indent,
	line->elements[0].item, line->elements[0].indent,
	cfg->fallbackImage);
	} else {
	if (lineWrite(out, line, cfg->cfi) == -1) {
	fprintf(stderr, _("grubby: error writing %s: %s\n"),
	tmpOutName, strerror(errno));
	fclose(out);
	unlink(tmpOutName);
	return 1;
	}
	}
1492
1493	line = line->next;	/* ok, we get the final ' or ", others are extras. */
1494	}	}
1495		line->elements[1].indent =
1496		line->elements[line->numElements - 2].indent;
1497		line->elements[1].item = buf;
1498		line->elements[2].indent =
1499		line->elements[line->numElements - 2].indent;
1500		line->elements[2].item = extras;
1501		line->numElements = 3;
1502		} else if (line->type == LT_KERNELARGS && cfi->argsInQuotes) {
1503		/* Strip off any " which may be present; they'll be
1504		* put back on write. This is one of the few (the
1505		* only?) places that grubby canonicalizes the output
1506		*/
1507		if (line->numElements >= 2) {
1508		int last, len;
1509
1510	if (needs & MAIN_DEFAULT) {	if (isquote(*line->elements[1].item))
1511	writeDefault(out, cfg->primaryIndent, "=", cfg);	memmove(line->elements[1].item,
1512	needs &= ~MAIN_DEFAULT;	line->elements[1].item + 1,
1513	}	strlen(line->elements[1].item +
1514		1) + 1);
1515	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;
1796		if (!strcmp(outName, "-")) {
1797		out = stdout;
1798		tmpOutName = NULL;
1799		} else {
1800		if (!lstat(outName, &sb) && S_ISLNK(sb.st_mode)) {
1801		char *buf;
1802		int len = 256;
1803		int rc;
1804
1805		/* most likely the symlink is relative, so change our
1806		directory to the dir of the symlink */
1807		char *dir = strdupa(outName);
1808		rc = chdir(dirname(dir));
1809		do {
1810		buf = alloca(len + 1);
1811		rc = readlink(basename(outName), buf, len);
1812		if (rc == len)
1813		len += 256;
1814		} while (rc == len);
1815
1816		if (rc < 0) {
1817		fprintf(stderr,
1818		_
1819		("grubby: error readlink link %s: %s\n"),
1820		outName, strerror(errno));
1821		return 1;
1822		}
1823
1824		outName = buf;
1825		outName[rc] = '\0';
1826		}
1827
1828	if (isdigit(*kernel)) {	tmpOutName = alloca(strlen(outName) + 2);
1829	int * indexVars = alloca(sizeof(*indexVars) * strlen(kernel));	sprintf(tmpOutName, "%s-", outName);
1830		out = fopen(tmpOutName, "w");
1831		if (!out) {
1832		fprintf(stderr, _("grubby: error creating %s: %s\n"),
1833		tmpOutName, strerror(errno));
1834		return 1;
1835		}
1836
1837	i = 0;	if (!stat(outName, &sb)) {
1838	indexVars[i] = strtol(kernel, &chptr, 10);	if (chmod(tmpOutName, sb.st_mode & ~(S_IFMT))) {
1839	while (*chptr == ',') {	fprintf(stderr,
1840	i++;	_
1841	kernel = chptr + 1;	("grubby: error setting perms on %s: %s\n"),
1842	indexVars[i] = strtol(kernel, &chptr, 10);	tmpOutName, strerror(errno));
1843		fclose(out);
1844		unlink(tmpOutName);
1845		return 1;
1846		}
1847		}
1848		}
1849
1850		line = cfg->theLines;
1851		struct keywordTypes *defaultKw = getKeywordByType(LT_DEFAULT, cfg->cfi);
1852		while (line) {
1853		if (line->type == LT_SET_VARIABLE && defaultKw &&
1854		line->numElements == 3 &&
1855		!strcmp(line->elements[1].item, defaultKw->key) &&
1856		!is_special_grub2_variable(line->elements[2].item)) {
1857		writeDefault(out, line->indent,
1858		line->elements[0].indent, cfg);
1859		needs &= ~MAIN_DEFAULT;
1860		} else if (line->type == LT_DEFAULT) {
1861		writeDefault(out, line->indent,
1862		line->elements[0].indent, cfg);
1863		needs &= ~MAIN_DEFAULT;
1864		} else if (line->type == LT_FALLBACK) {
1865		if (cfg->fallbackImage > -1)
1866		fprintf(out, "%s%s%s%d\n", line->indent,
1867		line->elements[0].item,
1868		line->elements[0].indent,
1869		cfg->fallbackImage);
1870		} else {
1871		if (lineWrite(out, line, cfg->cfi) == -1) {
1872		fprintf(stderr,
1873		_("grubby: error writing %s: %s\n"),
1874		tmpOutName, strerror(errno));
1875		fclose(out);
1876		unlink(tmpOutName);
1877		return 1;
1878		}
1879		}
1880
1881		line = line->next;
1882	}	}
1883
1884	if (*chptr) {	if (needs & MAIN_DEFAULT) {
1885	/* can't parse it, bail */	writeDefault(out, cfg->primaryIndent, "=", cfg);
1886	return NULL;	needs &= ~MAIN_DEFAULT;
1887	}	}
1888
	indexVars[i + 1] = -1;
1889	i = 0;	i = 0;
1890	if (index) {	while ((entry = findEntryByIndex(cfg, i++))) {
1891	while (i < *index) i++;	if (entry->skip)
1892	if (indexVars[i] == -1) return NULL;	continue;
1893
1894		line = entry->lines;
1895		while (line) {
1896		if (lineWrite(out, line, cfg->cfi) == -1) {
1897		fprintf(stderr,
1898		_("grubby: error writing %s: %s\n"),
1899		tmpOutName, strerror(errno));
1900		fclose(out);
1901		unlink(tmpOutName);
1902		return 1;
1903		}
1904		line = line->next;
1905		}
1906	}	}
1907
1908	entry = findEntryByIndex(config, indexVars[i]);	if (tmpOutName) {
1909	if (!entry) return NULL;	if (rename(tmpOutName, outName)) {
1910		fprintf(stderr,
1911		_("grubby: error moving %s to %s: %s\n"),
1912		tmpOutName, outName, strerror(errno));
1913		unlink(outName);
1914		return 1;
1915		}
1916		}
1917
1918	line = getLineByType(LT_KERNEL|LT_HYPER, entry->lines);	return 0;
1919	if (!line) return NULL;	}
1920
1921	if (index) *index = indexVars[i];	static int numEntries(struct grubConfig *cfg)
1922	return entry;	{
1923	}	int i = 0;
1924		struct singleEntry *entry;
	if (!strcmp(kernel, "DEFAULT")) {
	if (index && *index > config->defaultImage) {
	entry = NULL;
	} else {
	entry = findEntryByIndex(config, config->defaultImage);
	if (entry && entry->skip)
	entry = NULL;
	else if (index)
	*index = config->defaultImage;
	}
	} else if (!strcmp(kernel, "ALL")) {
	if (index)
	i = *index;
	else
	i = 0;
1925
1926	while ((entry = findEntryByIndex(config, i))) {	entry = cfg->entries;
1927	if (!entry->skip) break;	while (entry) {
1928	i++;	if (!entry->skip)
1929		i++;
1930		entry = entry->next;
1931	}	}
1932		return i;
1933		}
1934
1935	if (entry && index)	static char *findDiskForRoot()
1936	*index = i;	{
1937	} else {	int fd;
1938	if (index)	char buf[65536];
1939	i = *index;	char *devname;
1940	else	char *chptr;
1941	i = 0;	int rc;
1942
1943	if (!strncmp(kernel, "TITLE=", 6)) {	if ((fd = open(_PATH_MOUNTED, O_RDONLY)) < 0) {
1944	prefix = "";	fprintf(stderr, "grubby: failed to open %s: %s\n",
1945	checkType = LT_TITLE;	_PATH_MOUNTED, strerror(errno));
1946	kernel += 6;	return NULL;
1947		}
1948
1949		rc = read(fd, buf, sizeof(buf) - 1);
1950		if (rc <= 0) {
1951		fprintf(stderr, "grubby: failed to read %s: %s\n",
1952		_PATH_MOUNTED, strerror(errno));
1953		close(fd);
1954		return NULL;
1955	}	}
1956		close(fd);
1957		buf[rc] = '\0';
1958		chptr = buf;
1959
1960	for (entry = findEntryByIndex(config, i); entry; entry = entry->next, i++) {	char *foundanswer = NULL;
	if (entry->skip) continue;
1961
1962	dbgPrintf("findEntryByPath looking for %d %s in %p\n", checkType, kernel, entry);	while (chptr && chptr != buf + rc) {
1963		devname = chptr;
1964
1965	/* check all the lines matching checkType */	/*
1966	for (line = entry->lines; line; line = line->next) {	* The first column of a mtab entry is the device, but if the
1967	line = getLineByType(entry->multiboot && checkType == LT_KERNEL ?	* entry is a special device it won't start with /, so move
1968	LT_KERNEL|LT_MBMODULE|LT_HYPER :	* on to the next line.
1969	checkType, line);	*/
1970	if (!line) break;  /* not found in this entry */	if (*devname != '/') {
1971		chptr = strchr(chptr, '\n');
1972		if (chptr)
1973		chptr++;
1974		continue;
1975		}
1976
1977	if (line && line->numElements >= 2) {	/* Seek to the next space */
1978	rootspec = getRootSpecifier(line->elements[1].item);	chptr = strchr(chptr, ' ');
1979	if (!strcmp(line->elements[1].item +	if (!chptr) {
1980	((rootspec != NULL) ? strlen(rootspec) : 0),	fprintf(stderr, "grubby: error parsing %s: %s\n",
1981	kernel + strlen(prefix)))	_PATH_MOUNTED, strerror(errno));
1982	break;	return NULL;
1983	}	}
	}
1984
1985	/* make sure this entry has a kernel identifier; this skips	/*
1986	* non-Linux boot entries (could find netbsd etc, though, which is	* The second column of a mtab entry is the mount point, we
1987	* unfortunate)	* are looking for '/' obviously.
1988	*/	*/
1989	if (line && getLineByType(LT_KERNEL|LT_HYPER, entry->lines))	if (*(++chptr) == '/' && *(++chptr) == ' ') {
1990	break; /* found 'im! */	/* remember the last / entry in mtab */
1991		foundanswer = devname;
1992		}
1993
1994		/* Next line */
1995		chptr = strchr(chptr, '\n');
1996		if (chptr)
1997		chptr++;
1998	}	}
1999
2000	if (index) *index = i;	/* Return the last / entry found */
2001	}	if (foundanswer) {
2002		chptr = strchr(foundanswer, ' ');
2003		*chptr = '\0';
2004		return strdup(foundanswer);
2005		}
2006
2007	return entry;	return NULL;
2008	}	}
2009
2010	struct singleEntry * findEntryByIndex(struct grubConfig * cfg, int index) {	void printEntry(struct singleEntry *entry, FILE * f)
2011	struct singleEntry * entry;	{
2012		int i;
2013		struct singleLine *line;
2014
2015	entry = cfg->entries;	for (line = entry->lines; line; line = line->next) {
2016	while (index && entry) {	log_message(f, "DBG: %s", line->indent);
2017	entry = entry->next;	for (i = 0; i < line->numElements; i++) {
2018	index--;	/* Need to handle this, because we strip the quotes from
2019	}	* menuentry when read it. */
2020		if (line->type == LT_MENUENTRY && i == 1) {
2021		if (!isquote(*line->elements[i].item))
2022		log_message(f, "\'%s\'",
2023		line->elements[i].item);
2024		else
2025		log_message(f, "%s",
2026		line->elements[i].item);
2027		log_message(f, "%s", line->elements[i].indent);
2028
2029	return entry;	continue;
2030	}	}
2031
2032	/* Find a good template to use for the new kernel. An entry is	log_message(f, "%s%s",
2033	* good if the kernel and mkinitrd exist (even if the entry	line->elements[i].item,
2034	* is going to be removed). Try and use the default entry, but	line->elements[i].indent);
2035	* if that doesn't work just take the first. If we can't find one,	}
2036	* bail. */	log_message(f, "\n");
	struct singleEntry * findTemplate(struct grubConfig * cfg, const char * prefix,
	int * indexPtr, int skipRemoved, int flags) {
	struct singleEntry * entry, * entry2;
	int index;
	if (cfg->defaultImage > -1) {
	entry = findEntryByIndex(cfg, cfg->defaultImage);
	if (entry && suitableImage(entry, prefix, skipRemoved, flags)) {
	if (indexPtr) *indexPtr = cfg->defaultImage;
	return entry;
2037	}	}
2038	}	}
2039
2040		void notSuitablePrintf(struct singleEntry *entry, int okay, const char *fmt,
2041		...)
2042		{
2043		static int once;
2044		va_list argp, argq;
2045
2046	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;
2047
2048	return entry;	va_copy(argq, argp);
2049		if (!once) {
2050		log_time(NULL);
2051		log_message(NULL, "command line: %s\n", saved_command_line);
2052	}	}
2053		log_message(NULL, "DBG: Image entry %s: ",
2054		okay ? "succeeded" : "failed");
2055		log_vmessage(NULL, fmt, argq);
2056
2057	index++;	printEntry(entry, NULL);
2058	}	va_end(argq);
2059
2060		if (!debug) {
2061		once = 1;
2062		va_end(argp);
2063		return;
2064		}
2065
2066	fprintf(stderr, _("grubby fatal error: unable to find a suitable template\n"));	if (okay) {
2067		va_end(argp);
2068		return;
2069		}
2070
2071	return NULL;	if (!once)
2072		log_message(stderr, "DBG: command line: %s\n",
2073		saved_command_line);
2074		once = 1;
2075		fprintf(stderr, "DBG: Image entry failed: ");
2076		vfprintf(stderr, fmt, argp);
2077		printEntry(entry, stderr);
2078		va_end(argp);
2079	}	}
2080
2081	char * findBootPrefix(void) {	#define beginswith(s, c) ((s) && (s)[0] == (c))
	struct stat sb, sb2;
2082
2083	stat("/", &sb);	static int endswith(const char *s, char c)
2084	#ifdef __ia64__	{
2085	stat("/boot/efi/EFI/redhat/", &sb2);	int slen;
	#else
	stat("/boot", &sb2);
	#endif
2086
2087	if (sb.st_dev == sb2.st_dev)	if (!s || !s[0])
2088	return strdup("");	return 0;
2089		slen = strlen(s) - 1;
2090
2091	#ifdef __ia64__	return s[slen] == c;
	return strdup("/boot/efi/EFI/redhat/");
	#else
	return strdup("/boot");
	#endif
2092	}	}
2093
2094	void markRemovedImage(struct grubConfig * cfg, const char * image,	int suitableImage(struct singleEntry *entry, const char *bootPrefix,
2095	const char * prefix) {	int skipRemoved, int flags)
2096	struct singleEntry * entry;	{
2097		struct singleLine *line;
2098	if (!image) return;	char *fullName;
2099		int i;
2100	while ((entry = findEntryByPath(cfg, image, prefix, NULL)))	char *dev;
2101	entry->skip = 1;	char *rootspec;
2102	}	char *rootdev;
2103
2104	void setDefaultImage(struct grubConfig * config, int hasNew,	if (skipRemoved && entry->skip) {
2105	const char * defaultKernelPath, int newIsDefault,	notSuitablePrintf(entry, 0, "marked to skip\n");
2106	const char * prefix, int flags) {	return 0;
2107	struct singleEntry * entry, * entry2, * newDefault;	}
2108	int i, j;
2109		line =
2110	if (newIsDefault) {	getLineByType(LT_KERNEL | LT_HYPER | LT_KERNEL_EFI | LT_KERNEL_16,
2111	config->defaultImage = 0;	entry->lines);
2112	return;	if (!line) {
2113	} else if (defaultKernelPath) {	notSuitablePrintf(entry, 0, "no line found\n");
2114	i = 0;	return 0;
2115	if (findEntryByPath(config, defaultKernelPath, prefix, &i)) {	}
2116	config->defaultImage = i;	if (line->numElements < 2) {
2117	} else {	notSuitablePrintf(entry, 0, "line has only %d elements\n",
2118	config->defaultImage = -1;	line->numElements);
2119	return;	return 0;
2120	}	}
	}
2121
2122	/* defaultImage now points to what we'd like to use, but before any order	if (flags & GRUBBY_BADIMAGE_OKAY) {
2123	changes */	notSuitablePrintf(entry, 1, "\n");
2124	if (config->defaultImage == DEFAULT_SAVED)	return 1;
2125	/* default is set to saved, we don't want to change it */	}
	return;
	if (config->defaultImage > -1)
	entry = findEntryByIndex(config, config->defaultImage);
	else
	entry = NULL;
2126
2127	if (entry && !entry->skip) {	fullName = alloca(strlen(bootPrefix) +
2128	/* we can preserve the default */	strlen(line->elements[1].item) + 1);
2129	if (hasNew)	rootspec = getRootSpecifier(line->elements[1].item);
2130	config->defaultImage++;	int rootspec_offset = rootspec ? strlen(rootspec) : 0;
2131		int hasslash = endswith(bootPrefix, '/') ||
2132	/* count the number of entries erased before this one */	beginswith(line->elements[1].item + rootspec_offset, '/');
2133	for (j = 0; j < config->defaultImage; j++) {	sprintf(fullName, "%s%s%s", bootPrefix, hasslash ? "" : "/",
2134	entry2 = findEntryByIndex(config, j);	line->elements[1].item + rootspec_offset);
2135	if (entry2->skip) config->defaultImage--;	if (access(fullName, R_OK)) {
2136	}	notSuitablePrintf(entry, 0, "access to %s failed\n", fullName);
2137	} else if (hasNew) {	return 0;
2138	config->defaultImage = 0;	}
2139	} else {	for (i = 2; i < line->numElements; i++)
2140	/* Either we just erased the default (or the default line was bad	if (!strncasecmp(line->elements[i].item, "root=", 5))
2141	* to begin with) and didn't put a new one in. We'll use the first	break;
2142	* valid image. */	if (i < line->numElements) {
2143	newDefault = findTemplate(config, prefix, &config->defaultImage, 1,	dev = line->elements[i].item + 5;
2144	flags);	} else {
2145	if (!newDefault)	/* look for a lilo style LT_ROOT line */
2146	config->defaultImage = -1;	line = getLineByType(LT_ROOT, entry->lines);
	}
	}
2147
2148	void setFallbackImage(struct grubConfig * config, int hasNew) {	if (line && line->numElements >= 2) {
2149	struct singleEntry * entry, * entry2;	dev = line->elements[1].item;
2150	int j;	} else {
2151		/* didn't succeed in finding a LT_ROOT, let's try
2152	if (config->fallbackImage == -1) return;	* LT_KERNELARGS.  grub+multiboot uses LT_MBMODULE
2153		* for the args, so check that too.
2154	entry = findEntryByIndex(config, config->fallbackImage);	*/
2155	if (!entry || entry->skip) {	line =
2156	config->fallbackImage = -1;	getLineByType(LT_KERNELARGS | LT_MBMODULE,
2157	return;	entry->lines);
2158	}
2159		/* failed to find one */
2160		if (!line) {
2161		notSuitablePrintf(entry, 0, "no line found\n");
2162		return 0;
2163		}
2164
2165	if (hasNew)	for (i = 1; i < line->numElements; i++)
2166	config->fallbackImage++;	if (!strncasecmp
2167		(line->elements[i].item, "root=", 5))
2168	/* count the number of entries erased before this one */	break;
2169	for (j = 0; j < config->fallbackImage; j++) {	if (i < line->numElements)
2170	entry2 = findEntryByIndex(config, j);	dev = line->elements[i].item + 5;
2171	if (entry2->skip) config->fallbackImage--;	else {
2172	}	notSuitablePrintf(entry, 0,
2173		"no root= entry found\n");
2174		/* it failed too...  can't find root= */
2175		return 0;
2176		}
2177		}
2178		}
2179
2180		dev = getpathbyspec(dev);
2181		if (!getpathbyspec(dev)) {
2182		notSuitablePrintf(entry, 0, "can't find blkid entry for %s\n",
2183		dev);
2184		return 0;
2185		} else
2186		dev = getpathbyspec(dev);
2187
2188		rootdev = findDiskForRoot();
2189		if (!rootdev) {
2190		notSuitablePrintf(entry, 0, "can't find root device\n");
2191		return 0;
2192		}
2193
2194		if (!getuuidbydev(rootdev) || !getuuidbydev(dev)) {
2195		notSuitablePrintf(entry, 0,
2196		"uuid missing: rootdev %s, dev %s\n",
2197		getuuidbydev(rootdev), getuuidbydev(dev));
2198		free(rootdev);
2199		return 0;
2200		}
2201
2202		if (strcmp(getuuidbydev(rootdev), getuuidbydev(dev))) {
2203		notSuitablePrintf(entry, 0,
2204		"uuid mismatch: rootdev %s, dev %s\n",
2205		getuuidbydev(rootdev), getuuidbydev(dev));
2206		free(rootdev);
2207		return 0;
2208		}
2209
2210		free(rootdev);
2211		notSuitablePrintf(entry, 1, "\n");
2212
2213		return 1;
2214	}	}
2215
2216	void displayEntry(struct singleEntry * entry, const char * prefix, int index) {	/* returns the first match on or after the one pointed to by index (if index
2217	struct singleLine * line;	is not NULL) which is not marked as skip */
2218	char * root = NULL;	struct singleEntry *findEntryByPath(struct grubConfig *config,
2219	int i;	const char *kernel, const char *prefix,
2220		int *index)
2221	printf("index=%d\n", index);	{
2222		struct singleEntry *entry = NULL;
2223	line = getLineByType(LT_KERNEL|LT_HYPER, entry->lines);	struct singleLine *line;
2224	if (!line) {	int i;
2225	printf("non linux entry\n");	char *chptr;
2226	return;	char *rootspec = NULL;
2227	}	enum lineType_e checkType = LT_KERNEL;
2228
2229		if (isdigit(*kernel)) {
2230		int *indexVars = alloca(sizeof(*indexVars) * strlen(kernel));
2231
2232		i = 0;
2233		indexVars[i] = strtol(kernel, &chptr, 10);
2234		while (*chptr == ',') {
2235		i++;
2236		kernel = chptr + 1;
2237		indexVars[i] = strtol(kernel, &chptr, 10);
2238		}
2239
2240	printf("kernel=%s\n", line->elements[1].item);	if (*chptr) {
2241		/* can't parse it, bail */
2242		return NULL;
2243		}
2244
2245	if (line->numElements >= 3) {	indexVars[i + 1] = -1;
	printf("args=\"");
	i = 2;
	while (i < line->numElements) {
	if (!strncmp(line->elements[i].item, "root=", 5)) {
	root = line->elements[i].item + 5;
	} else {
	printf("%s%s", line->elements[i].item,
	line->elements[i].indent);
	}
2246
2247	i++;	i = 0;
2248	}	if (index) {
2249	printf("\"\n");	while (i < *index) {
2250	} else {	i++;
2251	line = getLineByType(LT_KERNELARGS, entry->lines);	if (indexVars[i] == -1)
2252	if (line) {	return NULL;
2253	char * s;	}
2254		}
2255
2256	printf("args=\"");	entry = findEntryByIndex(config, indexVars[i]);
2257	i = 1;	if (!entry)
2258	while (i < line->numElements) {	return NULL;
2259	if (!strncmp(line->elements[i].item, "root=", 5)) {
2260	root = line->elements[i].item + 5;	line =
2261		getLineByType(LT_KERNEL | LT_HYPER | LT_KERNEL_EFI |
2262		LT_KERNEL_16, entry->lines);
2263		if (!line)
2264		return NULL;
2265
2266		if (index)
2267		*index = indexVars[i];
2268		return entry;
2269		}
2270
2271		if (!strcmp(kernel, "DEFAULT")) {
2272		if (index && *index > config->defaultImage) {
2273		entry = NULL;
2274	} else {	} else {
2275	s = line->elements[i].item;	entry = findEntryByIndex(config, config->defaultImage);
2276		if (entry && entry->skip)
2277		entry = NULL;
2278		else if (index)
2279		*index = config->defaultImage;
2280		}
2281		} else if (!strcmp(kernel, "ALL")) {
2282		if (index)
2283		i = *index;
2284		else
2285		i = 0;
2286
2287		while ((entry = findEntryByIndex(config, i))) {
2288		if (!entry->skip)
2289		break;
2290		i++;
2291		}
2292
2293	printf("%s%s", s, line->elements[i].indent);	if (entry && index)
2294		*index = i;
2295		} else {
2296		if (index)
2297		i = *index;
2298		else
2299		i = 0;
2300
2301		if (!strncmp(kernel, "TITLE=", 6)) {
2302		prefix = "";
2303		checkType = LT_TITLE | LT_MENUENTRY;
2304		kernel += 6;
2305	}	}
2306
2307	i++;	for (entry = findEntryByIndex(config, i); entry;
2308	}	entry = entry->next, i++) {
2309		if (entry->skip)
2310		continue;
2311
2312		dbgPrintf("findEntryByPath looking for %d %s in %p\n",
2313		checkType, kernel, entry);
2314
2315		/* check all the lines matching checkType */
2316		for (line = entry->lines; line; line = line->next) {
2317		enum lineType_e ct = checkType;
2318		if (entry->multiboot && checkType == LT_KERNEL)
2319		ct = LT_KERNEL | LT_KERNEL_EFI |
2320		LT_MBMODULE | LT_HYPER |
2321		LT_KERNEL_16;
2322		else if (checkType & LT_KERNEL)
2323		ct = checkType | LT_KERNEL_EFI |
2324		LT_KERNEL_16;
2325		line = getLineByType(ct, line);
2326		if (!line)
2327		break; /* not found in this entry */
2328
2329		if (line && line->type != LT_MENUENTRY &&
2330		line->numElements >= 2) {
2331		rootspec =
2332		getRootSpecifier(line->elements[1].
2333		item);
2334		if (!strcmp
2335		(line->elements[1].item +
2336		((rootspec !=
2337		NULL) ? strlen(rootspec) : 0),
2338		kernel + strlen(prefix)))
2339		break;
2340		}
2341		if (line->type == LT_MENUENTRY &&
2342		!strcmp(line->elements[1].item, kernel))
2343		break;
2344		}
2345
2346		/* make sure this entry has a kernel identifier; this skips
2347		* non-Linux boot entries (could find netbsd etc, though, which is
2348		* unfortunate)
2349		*/
2350		if (line
2351		&& getLineByType(LT_KERNEL | LT_HYPER |
2352		LT_KERNEL_EFI | LT_KERNEL_16,
2353		entry->lines))
2354		break; /* found 'im! */
2355		}
2356
2357	s = line->elements[i - 1].indent;	if (index)
2358	printf("\"\n");	*index = i;
2359	}	}
	}
2360
2361	if (!root) {	return entry;
2362	line = getLineByType(LT_ROOT, entry->lines);	}
	if (line && line->numElements >= 2)
	root=line->elements[1].item;
	}
2363
2364	if (root) {	struct singleEntry *findEntryByTitle(struct grubConfig *cfg, char *title,
2365	char * s = alloca(strlen(root) + 1);	int *index)
2366		{
2367	strcpy(s, root);	struct singleEntry *entry;
2368	if (s[strlen(s) - 1] == '"')	struct singleLine *line;
2369	s[strlen(s) - 1] = '\0';	int i;
2370	/* make sure the root doesn't have a trailing " */	char *newtitle;
2371	printf("root=%s\n", s);
2372	}	for (i = 0, entry = cfg->entries; entry; entry = entry->next, i++) {
2373		if (index && i < *index)
2374		continue;
2375		line = getLineByType(LT_TITLE, entry->lines);
2376		if (!line)
2377		line = getLineByType(LT_MENUENTRY, entry->lines);
2378		if (!line)
2379		continue;
2380		newtitle = grub2ExtractTitle(line);
2381		if (!newtitle)
2382		continue;
2383		if (!strcmp(title, newtitle))
2384		break;
2385		}
2386
2387	line = getLineByType(LT_INITRD, entry->lines);	if (!entry)
2388		return NULL;
2389
2390	if (line && line->numElements >= 2) {	if (index)
2391	printf("initrd=%s", prefix);	*index = i;
2392	for (i = 1; i < line->numElements; i++)	return entry;
	printf("%s%s", line->elements[i].item, line->elements[i].indent);
	printf("\n");
	}
2393	}	}
2394
2395	int parseSysconfigGrub(int * lbaPtr, char ** bootPtr) {	struct singleEntry *findEntryByIndex(struct grubConfig *cfg, int index)
2396	FILE * in;	{
2397	char buf[1024];	struct singleEntry *entry;
	char * chptr;
	char * start;
	char * param;
	in = fopen("/etc/conf.d/grub", "r");
	if (!in) return 1;
	if (lbaPtr) *lbaPtr = 0;
	if (bootPtr) *bootPtr = NULL;
	while (fgets(buf, sizeof(buf), in)) {
	start = buf;
	while (isspace(*start)) start++;
	if (*start == '#') continue;
	chptr = strchr(start, '=');
	if (!chptr) continue;
	chptr--;
	while (*chptr && isspace(*chptr)) chptr--;
	chptr++;
	*chptr = '\0';
	param = chptr + 1;
	while (*param && isspace(*param)) param++;
	if (*param == '=') {
	param++;
	while (*param && isspace(*param)) param++;
	}
	chptr = param;
	while (*chptr && !isspace(*chptr)) chptr++;
	*chptr = '\0';
	if (!strcmp(start, "forcelba") && !strcmp(param, "1") && lbaPtr)
	*lbaPtr = 1;
	else if (!strcmp(start, "boot") && bootPtr)
	*bootPtr = strdup(param);
	}
	fclose(in);
2398
2399	return 0;	entry = cfg->entries;
2400	}	while (index && entry) {
2401		entry = entry->next;
2402		index--;
2403		}
2404
2405	void dumpSysconfigGrub(void) {	return entry;
	char * boot;
	int lba;
	if (!parseSysconfigGrub(&lba, &boot)) {
	if (lba) printf("lba\n");
	if (boot) printf("boot=%s\n", boot);
	}
2406	}	}
2407
2408	int displayInfo(struct grubConfig * config, char * kernel,	/* Find a good template to use for the new kernel. An entry is
2409	const char * prefix) {	* good if the kernel and mkinitrd exist (even if the entry
2410	int i = 0;	* is going to be removed). Try and use the default entry, but
2411	struct singleEntry * entry;	* if that doesn't work just take the first. If we can't find one,
2412	struct singleLine * line;	* bail. */
2413		struct singleEntry *findTemplate(struct grubConfig *cfg, const char *prefix,
2414	entry = findEntryByPath(config, kernel, prefix, &i);	int *indexPtr, int skipRemoved, int flags)
2415	if (!entry) {	{
2416	fprintf(stderr, _("grubby: kernel not found\n"));	struct singleEntry *entry, *entry2;
2417	return 1;	int index;
	}
2418
2419	/* this is a horrible hack to support /etc/conf.d/grub; there must	if (cfg->cfi->defaultIsSaved) {
2420	be a better way */	if (cfg->cfi->getEnv) {
2421	if (config->cfi == &grubConfigType) {	char *defTitle =
2422	dumpSysconfigGrub();	cfg->cfi->getEnv(cfg->cfi, "saved_entry");
2423	} else {	if (defTitle) {
2424	line = getLineByType(LT_BOOT, config->theLines);	int index = 0;
2425	if (line && line->numElements >= 1) {	if (isnumber(defTitle)) {
2426	printf("boot=%s\n", line->elements[1].item);	index = atoi(defTitle);
2427		entry = findEntryByIndex(cfg, index);
2428		} else {
2429		entry =
2430		findEntryByTitle(cfg, defTitle,
2431		&index);
2432		}
2433		if (entry
2434		&& suitableImage(entry, prefix, skipRemoved,
2435		flags)) {
2436		cfg->defaultImage = index;
2437		if (indexPtr)
2438		*indexPtr = index;
2439		return entry;
2440		}
2441		}
2442		}
2443		} else if (cfg->defaultImage >= FIRST_ENTRY_INDEX) {
2444		entry = findEntryByIndex(cfg, cfg->defaultImage);
2445		if (entry && suitableImage(entry, prefix, skipRemoved, flags)) {
2446		if (indexPtr)
2447		*indexPtr = cfg->defaultImage;
2448		return entry;
2449		}
2450	}	}
2451
2452	line = getLineByType(LT_LBA, config->theLines);	index = 0;
2453	if (line) printf("lba\n");	while ((entry = findEntryByIndex(cfg, index))) {
2454	}	if (suitableImage(entry, prefix, skipRemoved, flags)) {
2455		int j, unmodifiedIndex;
2456	displayEntry(entry, prefix, i);
2457		unmodifiedIndex = index;
2458	i++;
2459	while ((entry = findEntryByPath(config, kernel, prefix, &i))) {	for (j = 0; j < unmodifiedIndex; j++) {
2460	displayEntry(entry, prefix, i);	entry2 = findEntryByIndex(cfg, j);
2461	i++;	if (entry2->skip)
2462	}	index--;
2463		}
2464		if (indexPtr)
2465		*indexPtr = index;
2466
2467	return 0;	return entry;
2468	}	}
2469
2470	struct singleLine * addLineTmpl(struct singleEntry * entry,	index++;
	struct singleLine * tmplLine,
	struct singleLine * prevLine,
	const char * val,
	struct configFileInfo * cfi)
	{
	struct singleLine * newLine = lineDup(tmplLine);
	if (val) {
	/* override the inherited value with our own.
	* This is a little weak because it only applies to elements[1]
	*/
	if (newLine->numElements > 1)
	removeElement(newLine, 1);
	insertElement(newLine, val, 1, cfi);
	/* but try to keep the rootspec from the template... sigh */
	if (tmplLine->type & (LT_HYPER|LT_KERNEL|LT_MBMODULE|LT_INITRD)) {
	char * rootspec = getRootSpecifier(tmplLine->elements[1].item);
	if (rootspec != NULL) {
	free(newLine->elements[1].item);
	newLine->elements[1].item =
	sdupprintf("%s%s", rootspec, val);
	}
2471	}	}
	}
2472
2473	dbgPrintf("addLineTmpl(%s)\n", newLine->numElements ?	fprintf(stderr,
2474	newLine->elements[0].item : "");	_("grubby fatal error: unable to find a suitable template\n"));
	if (!entry->lines) {
	/* first one on the list */
	entry->lines = newLine;
	} else if (prevLine) {
	/* add after prevLine */
	newLine->next = prevLine->next;
	prevLine->next = newLine;
	}
2475
2476	return newLine;	return NULL;
2477	}	}
2478
2479	/* val may be NULL */	char *findBootPrefix(void)
2480	struct singleLine *  addLine(struct singleEntry * entry,	{
2481	struct configFileInfo * cfi,	struct stat sb, sb2;
	enum lineType_e type, char * defaultIndent,
	const char * val) {
	struct singleLine * line, * prev;
	struct keywordTypes * kw;
	struct singleLine tmpl;
	/* NB: This function shouldn't allocate items on the heap, rather on the
	* stack since it calls addLineTmpl which will make copies.
	*/
	if (type == LT_TITLE && cfi->titleBracketed) {
	/* we're doing a bracketed title (zipl) */
	tmpl.type = type;
	tmpl.numElements = 1;
	tmpl.elements = alloca(sizeof(*tmpl.elements));
	tmpl.elements[0].item = alloca(strlen(val)+3);
	sprintf(tmpl.elements[0].item, "[%s]", val);
	tmpl.elements[0].indent = "";
	val = NULL;
	} else {
	kw = getKeywordByType(type, cfi);
	if (!kw) abort();
	tmpl.type = type;
	tmpl.numElements = val ? 2 : 1;
	tmpl.elements = alloca(sizeof(*tmpl.elements) * tmpl.numElements);
	tmpl.elements[0].item = kw->key;
	tmpl.elements[0].indent = alloca(2);
	sprintf(tmpl.elements[0].indent, "%c", kw->nextChar);
	if (val) {
	tmpl.elements[1].item = (char *)val;
	tmpl.elements[1].indent = "";
	}
	}
2482
2483	/* The last non-empty line gives us the indention to us and the line	stat("/", &sb);
2484	to insert after. Note that comments are considered empty lines, which	#ifdef __ia64__
2485	may not be ideal? If there are no lines or we are looking at the	stat("/boot/efi/EFI/redhat/", &sb2);
2486	first line, we use defaultIndent (the first line is normally indented	#else
2487	differently from the rest) */	stat("/boot", &sb2);
2488	for (line = entry->lines, prev = NULL; line; line = line->next) {	#endif
	if (line->numElements) prev = line;
	/* fall back on the last line if prev isn't otherwise set */
	if (!line->next && !prev) prev = line;
	}
2489
2490	if (prev == entry->lines)	if (sb.st_dev == sb2.st_dev)
2491	tmpl.indent = defaultIndent ?: "";	return strdup("");
	else
	tmpl.indent = prev->indent;
2492
2493	return addLineTmpl(entry, &tmpl, prev, val, cfi);	#ifdef __ia64__
2494		return strdup("/boot/efi/EFI/redhat/");
2495		#else
2496		return strdup("/boot");
2497		#endif
2498	}	}
2499
2500	void removeLine(struct singleEntry * entry, struct singleLine * line) {	void markRemovedImage(struct grubConfig *cfg, const char *image,
2501	struct singleLine * prev;	const char *prefix)
2502	int i;	{
2503		struct singleEntry *entry;
2504
2505	for (i = 0; i < line->numElements; i++) {	if (!image)
2506	free(line->elements[i].item);	return;
	free(line->elements[i].indent);
	}
	free(line->elements);
	free(line->indent);
2507
2508	if (line == entry->lines) {	/* check and see if we're removing the default image */
2509	entry->lines = line->next;	if (isdigit(*image)) {
2510	} else {	entry = findEntryByPath(cfg, image, prefix, NULL);
2511	prev = entry->lines;	if (entry)
2512	while (prev->next != line) prev = prev->next;	entry->skip = 1;
2513	prev->next = line->next;	return;
2514	}	}
2515
2516	free(line);	while ((entry = findEntryByPath(cfg, image, prefix, NULL)))
2517		entry->skip = 1;
2518	}	}
2519
2520	static void insertElement(struct singleLine * line,	void setDefaultImage(struct grubConfig *config, int isAddingBootEntry,
2521	const char * item, int insertHere,	const char *defaultKernelPath, int newBootEntryIsDefault,
2522	struct configFileInfo * cfi)	const char *prefix, int flags,
2523		int newDefaultBootEntryIndex, int newBootEntryIndex)
2524	{	{
2525	struct keywordTypes * kw;	struct singleEntry *bootEntry, *newDefault;
2526	char indent[2] = "";	int indexToVerify, firstKernelEntryIndex, currentLookupIndex;
	/* sanity check */
	if (insertHere > line->numElements) {
	dbgPrintf("insertElement() adjusting insertHere from %d to %d\n",
	insertHere, line->numElements);
	insertHere = line->numElements;
	}
2527
2528	line->elements = realloc(line->elements, (line->numElements + 1) *	/* initialize */
2529	sizeof(*line->elements));	currentLookupIndex = FIRST_ENTRY_INDEX;
	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] = ' ';
	}
2530
2531	if (insertHere > 0 && line->elements[insertHere-1].indent[0] == '\0') {	/* handle the two cases where the user explictly picks the default
2532	/* move the end-of-line forward */	* boot entry index as it would exist post-modification */
	line->elements[insertHere].indent =
	line->elements[insertHere-1].indent;
	line->elements[insertHere-1].indent = strdup(indent);
	} else {
	line->elements[insertHere].indent = strdup(indent);
	}
2533
2534	line->numElements++;	/* Case 1: user chose to make the latest boot entry the default */
2535		if (newBootEntryIsDefault) {
2536		config->defaultImage = newBootEntryIndex;
2537		return;
2538		}
2539
2540		/* Case 2: user picked an arbitrary index as the default boot entry */
2541		if (newDefaultBootEntryIndex >= FIRST_ENTRY_INDEX
2542		&& config->cfi->defaultIsIndex) {
2543		indexToVerify = newDefaultBootEntryIndex;
2544
2545		/* user chose to make latest boot entry the default */
2546		if (newDefaultBootEntryIndex == newBootEntryIndex) {
2547		config->defaultImage = newBootEntryIndex;
2548		return;
2549		}
2550
2551	dbgPrintf("insertElement(%s, '%s%s', %d)\n",	/* the user picks the default index based on the
2552	line->elements[0].item,	* order of the bootloader configuration after
2553	line->elements[insertHere].item,	* modification; ensure we are checking for the
2554	line->elements[insertHere].indent,	* existence of the correct entry */
2555	insertHere);	if (newBootEntryIndex < newDefaultBootEntryIndex) {
2556	}	if (!config->isModified)
2557		indexToVerify--;
2558		}
2559
2560	static void removeElement(struct singleLine * line, int removeHere) {	/* verify the user selected index will exist */
2561	int i;	if (findEntryByIndex(config, indexToVerify)) {
2562		config->defaultImage = newDefaultBootEntryIndex;
2563	/* sanity check */	} else {
2564	if (removeHere >= line->numElements) return;	config->defaultImage = NO_DEFAULT_ENTRY;
2565		}
	dbgPrintf("removeElement(%s, %d:%s)\n", line->elements[0].item,
	removeHere, line->elements[removeHere].item);
	free(line->elements[removeHere].item);
	if (removeHere > 1) {
	/* previous argument gets this argument's post-indentation */
	free(line->elements[removeHere-1].indent);
	line->elements[removeHere-1].indent =
	line->elements[removeHere].indent;
	} else {
	free(line->elements[removeHere].indent);
	}
2566
2567	/* 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;
2568	}	}
	}
2569
2570	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;
	}
	}
2571
2572		/* check validity of existing default or first-entry-found
2573		selection */
2574		if (defaultKernelPath) {
2575		/* we must initialize this */
2576		firstKernelEntryIndex = 0;
2577		/* user requested first-entry-found */
2578		if (!findEntryByPath(config, defaultKernelPath,
2579		prefix, &firstKernelEntryIndex)) {
2580		/* don't change default if can't find match */
2581		config->defaultImage = NO_DEFAULT_ENTRY;
2582		return;
2583		}
2584
2585	useKernelArgs = (getKeywordByType(LT_KERNELARGS, cfg->cfi)	config->defaultImage = firstKernelEntryIndex;
	&& (!multibootArgs || cfg->cfi->mbConcatArgs));
2586
2587	useRoot = (getKeywordByType(LT_ROOT, cfg->cfi)	/* this is where we start looking for decrement later */
2588	&& !multibootArgs);	currentLookupIndex = config->defaultImage;
2589
2590	for (; (entry = findEntryByPath(cfg, image, prefix, &index)); index++) {	if (isAddingBootEntry && !config->isModified &&
2591		(newBootEntryIndex < config->defaultImage)) {
2592		/* increment because new entry added before default */
2593		config->defaultImage++;
2594		}
2595		} else {
2596		/* check to see if the default is stored in the environment */
2597		if (config->defaultImage < FIRST_ENTRY_INDEX) {
2598		if (config->defaultImage == DEFAULT_SAVED || config->defaultImage == DEFAULT_SAVED_GRUB2)
2599		{
2600		if (config->cfi->defaultIsSaved) {
2601		if (config->cfi->getEnv) {
2602		char *defaultTitle = config->cfi->getEnv(config->cfi, "saved_entry");
2603
2604		if (defaultTitle) {
2605		if (isnumber(defaultTitle)) {
2606		currentLookupIndex = atoi(defaultTitle);
2607		} else {
2608		findEntryByTitle(config, defaultTitle, &currentLookupIndex);
2609		}
2610		/* set the default Image to an actual index */
2611		config->defaultImage = currentLookupIndex;
2612		}
2613		}
2614		}
2615		}
2616		} else {
2617		/* use pre-existing default entry from the file*/
2618		currentLookupIndex = config->defaultImage;
2619		}
2620
2621	if (multibootArgs && !entry->multiboot)	if (isAddingBootEntry
2622	continue;	&& (newBootEntryIndex <= config->defaultImage)) {
2623		config->defaultImage++;
2624
2625	/* Determine where to put the args.  If this config supports	if (config->isModified) {
2626	* LT_KERNELARGS, use that.  Otherwise use	currentLookupIndex++;
2627	* LT_HYPER/LT_KERNEL/LT_MBMODULE lines.	}
2628	*/	}
	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;
2629	}	}
2630
2631	/* handle the elilo case which does:	/* sanity check - is this entry index valid? */
2632	*   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);
2633
2634	} else if (useRoot && !strncmp(*arg, "root=/dev/", 10)) {	if ((bootEntry && bootEntry->skip) || !bootEntry) {
2635	/* root= replacement */	/* entry is to be skipped or is invalid */
2636	rootLine = getLineByType(LT_ROOT, entry->lines);	if (isAddingBootEntry) {
2637	if (rootLine) {	config->defaultImage = newBootEntryIndex;
2638	free(rootLine->elements[1].item);	return;
2639	rootLine->elements[1].item = strdup(*arg + 5);	}
2640	} else {	newDefault =
2641	rootLine = addLine(entry, cfg->cfi, LT_ROOT,	findTemplate(config, prefix, &config->defaultImage, 1,
2642	cfg->secondaryIndent, *arg + 5);	flags);
2643		if (!newDefault) {
2644		config->defaultImage = NO_DEFAULT_ENTRY;
2645	}	}
	}
2646
2647	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);
2648	}	}
	}
2649
2650	free(newArgs);	currentLookupIndex--;
	free(oldArgs);
2651
2652	return 0;	/* decrement index by the total number of entries deleted */
	}
2653
2654	int updateImage(struct grubConfig * cfg, const char * image,	for (indexToVerify = currentLookupIndex;
2655	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;
	}
2656
2657	return 0;	bootEntry = findEntryByIndex(config, indexToVerify);
	}
2658
2659	int checkDeviceBootloader(const char * device, const unsigned char * boot) {	if (bootEntry && bootEntry->skip) {
2660	int fd;	config->defaultImage--;
2661	unsigned char bootSect[512];	}
2662	int offset;	}
2663		}
	fd = open(device, O_RDONLY);
	if (fd < 0) {
	fprintf(stderr, _("grubby: unable to open %s: %s\n"),
	device, strerror(errno));
	return 1;
	}
2664
2665	if (read(fd, bootSect, 512) != 512) {	void setFallbackImage(struct grubConfig *config, int hasNew)
2666	fprintf(stderr, _("grubby: unable to read %s: %s\n"),	{
2667	device, strerror(errno));	struct singleEntry *entry, *entry2;
2668	return 1;	int j;
	}
	close(fd);
2669
2670	/* first three bytes should match, a jmp short should be in there */	if (config->fallbackImage == -1)
2671	if (memcmp(boot, bootSect, 3))	return;
	return 0;
2672
2673	if (boot[1] == 0xeb) {	entry = findEntryByIndex(config, config->fallbackImage);
2674	offset = boot[2] + 2;	if (!entry || entry->skip) {
2675	} else if (boot[1] == 0xe8 || boot[1] == 0xe9) {	config->fallbackImage = -1;
2676	offset = (boot[3] << 8) + boot[2] + 2;	return;
2677	} 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;
	}
2678
2679	if (memcmp(boot + offset, bootSect + offset, CODE_SEG_SIZE))	if (hasNew)
2680	return 0;	config->fallbackImage++;
2681
2682	return 2;	/* count the number of entries erased before this one */
2683		for (j = 0; j < config->fallbackImage; j++) {
2684		entry2 = findEntryByIndex(config, j);
2685		if (entry2->skip)
2686		config->fallbackImage--;
2687		}
2688	}	}
2689
2690	int checkLiloOnRaid(char * mdDev, const unsigned char * boot) {	void displayEntry(struct grubConfig *config, struct singleEntry *entry, const char *prefix, int index)
2691	int fd;	{
2692	char buf[65536];	struct singleLine *line;
2693	char * end;	char *root = NULL;
2694	char * chptr;	int i;
2695	char * chptr2;	int j;
	int rc;
2696
2697	/* 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 */
2698
2699	if (!strncmp(mdDev, "/dev/", 5))	line =
2700	mdDev += 5;	getLineByType(LT_KERNEL | LT_HYPER | LT_KERNEL_EFI | LT_KERNEL_16,
2701		entry->lines);
2702		if (!line) {
2703		printf("non linux entry\n");
2704		return;
2705		}
2706
2707	if ((fd = open("/proc/mdstat", O_RDONLY)) < 0) {	if (!strncmp(prefix, line->elements[1].item, strlen(prefix)))
2708	fprintf(stderr, _("grubby: failed to open /proc/mdstat: %s\n"),	printf("kernel=%s\n", line->elements[1].item);
2709	strerror(errno));	else
2710	return 2;	printf("kernel=%s%s\n", prefix, line->elements[1].item);
	}
2711
2712	rc = read(fd, buf, sizeof(buf) - 1);	if (line->numElements >= 3) {
2713	if (rc < 0 || rc == (sizeof(buf) - 1)) {	printf("args=\"");
2714	fprintf(stderr, _("grubby: failed to read /proc/mdstat: %s\n"),	i = 2;
2715	strerror(errno));	while (i < line->numElements) {
2716	close(fd);	if (!strncmp(line->elements[i].item, "root=", 5)) {
2717	return 2;	root = line->elements[i].item + 5;
2718	}	} else {
2719	close(fd);	printf("%s%s", line->elements[i].item,
2720	buf[rc] = '\0';	line->elements[i].indent);
2721		}
2722
2723	chptr = buf;	i++;
2724	while (*chptr) {	}
2725	end = strchr(chptr, '\n');	printf("\"\n");
2726	if (!end) break;	} else {
2727	*end = '\0';	line = getLineByType(LT_KERNELARGS, entry->lines);
2728		if (line) {
2729		char *s;
2730
2731		printf("args=\"");
2732		i = 1;
2733		while (i < line->numElements) {
2734		if (!strncmp
2735		(line->elements[i].item, "root=", 5)) {
2736		root = line->elements[i].item + 5;
2737		} else {
2738		s = line->elements[i].item;
2739
2740	if (!strncmp(chptr, mdDev, strlen(mdDev)) &&	printf("%s%s", s,
2741	chptr[strlen(mdDev)] == ' ') {	line->elements[i].indent);
2742		}
2743
2744	/* found the device */	i++;
2745	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++;
	}
2746
2747	/*  we're good to go */	s = line->elements[i - 1].indent;
2748	return 2;	printf("\"\n");
2749		}
2750	}	}
2751
2752	chptr = end + 1;	if (!root) {
2753	}	line = getLineByType(LT_ROOT, entry->lines);
2754		if (line && line->numElements >= 2)
2755		root = line->elements[1].item;
2756		}
2757
2758	fprintf(stderr,	if (root) {
2759	_("grubby: raid device /dev/%s not found in /proc/mdstat\n"),	char *s = alloca(strlen(root) + 1);
	mdDev);
	return 0;
	}
2760
2761	int checkForLilo(struct grubConfig * config) {	strcpy(s, root);
2762	int fd;	if (s[strlen(s) - 1] == '"')
2763	unsigned char boot[512];	s[strlen(s) - 1] = '\0';
2764	struct singleLine * line;	/* make sure the root doesn't have a trailing " */
2765		printf("root=%s\n", s);
2766	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;
	}
2767
2768	if (line->numElements != 2) return 1;	line =
2769		getLineByType(LT_INITRD | LT_INITRD_EFI | LT_INITRD_16,
2770		entry->lines);
2771
2772	fd = open("/boot/boot.b", O_RDONLY);	if (line && line->numElements >= 2) {
2773	if (fd < 0) {	if (!strncmp(prefix, line->elements[1].item, strlen(prefix)))
2774	fprintf(stderr, _("grubby: unable to open %s: %s\n"),	printf("initrd=");
2775	"/boot/boot.b", strerror(errno));	else
2776	return 1;	printf("initrd=%s", prefix);
	}
2777
2778	if (read(fd, boot, 512) != 512) {	for (i = 1; i < line->numElements; i++)
2779	fprintf(stderr, _("grubby: unable to read %s: %s\n"),	printf("%s%s", line->elements[i].item,
2780	"/boot/boot.b", strerror(errno));	line->elements[i].indent);
2781	return 1;	printf("\n");
2782	}	}
	close(fd);
2783
2784	if (!strncmp("/dev/md", line->elements[1].item, 7))	line = getLineByType(LT_TITLE, entry->lines);
2785	return checkLiloOnRaid(line->elements[1].item, boot);	if (line) {
2786		char *entryTitle;
2787		/* if we can extractTitle, then it's a zipl config and
2788		* if not then we go ahead with what's existed prior */
2789		entryTitle = extractTitle(config, line);
2790		if (!entryTitle) {
2791		entryTitle=line->elements[1].item;
2792		}
2793		printf("title=%s\n", entryTitle);
2794		} else {
2795		char *title;
2796		line = getLineByType(LT_MENUENTRY, entry->lines);
2797		if (line) {
2798		title = grub2ExtractTitle(line);
2799		if (title)
2800		printf("title=%s\n", title);
2801		}
2802		}
2803
2804	return checkDeviceBootloader(line->elements[1].item, boot);	for (j = 0, line = entry->lines; line; line = line->next) {
2805		if ((line->type & LT_MBMODULE) && line->numElements >= 2) {
2806		if (!strncmp
2807		(prefix, line->elements[1].item, strlen(prefix)))
2808		printf("mbmodule%d=", j);
2809		else
2810		printf("mbmodule%d=%s", j, prefix);
2811
2812		for (i = 1; i < line->numElements; i++)
2813		printf("%s%s", line->elements[i].item,
2814		line->elements[i].indent);
2815		printf("\n");
2816		j++;
2817		}
2818		}
2819	}	}
2820
2821	int checkForGrub(struct grubConfig * config) {	int isSuseSystem(void)
2822	int fd;	{
2823	unsigned char bootSect[512];	const char *path;
2824	char * boot;	const static char default_path[] = "/etc/SuSE-release";
	if (parseSysconfigGrub(NULL, &boot))
	return 0;
2825
2826	/* assume grub is not installed -- not an error condition */	if ((path = getenv("GRUBBY_SUSE_RELEASE")) == NULL)
2827	if (!boot)	path = default_path;
	return 0;
2828
2829	fd = open("/boot/grub/stage1", O_RDONLY);	if (!access(path, R_OK))
2830	if (fd < 0)	return 1;
	/* this doesn't exist if grub hasn't been installed */
2831	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);
2832	}	}
2833
2834	int checkForExtLinux(struct grubConfig * config) {	int isSuseGrubConf(const char *path)
2835	int fd;	{
2836	unsigned char bootSect[512];	FILE *grubConf;
2837	char * boot;	char *line = NULL;
2838	char executable[] = "/boot/extlinux/extlinux";	size_t len = 0, res = 0;
2839
2840		grubConf = fopen(path, "r");
2841		if (!grubConf) {
2842		dbgPrintf("Could not open SuSE configuration file '%s'\n",
2843		path);
2844		return 0;
2845		}
2846
2847		while ((res = getline(&line, &len, grubConf)) != -1) {
2848		if (!strncmp(line, "setup", 5)) {
2849		fclose(grubConf);
2850		free(line);
2851		return 1;
2852		}
2853		}
2854
2855	printf("entered: checkForExtLinux()\n");	dbgPrintf("SuSE configuration file '%s' does not appear to be valid\n",
2856		path);
2857
2858	if (parseSysconfigGrub(NULL, &boot))	fclose(grubConf);
2859		free(line);
2860	return 0;	return 0;
2861		}
2862
2863	/* assume grub is not installed -- not an error condition */	int suseGrubConfGetLba(const char *path, int *lbaPtr)
2864	if (!boot)	{
2865	return 0;	FILE *grubConf;
2866		char *line = NULL;
2867		size_t res = 0, len = 0;
2868
2869	fd = open(executable, O_RDONLY);	if (!path)
2870	if (fd < 0)	return 1;
2871	/* this doesn't exist if grub hasn't been installed */	if (!lbaPtr)
2872	return 0;	return 1;
2873
2874	if (read(fd, bootSect, 512) != 512) {	grubConf = fopen(path, "r");
2875	fprintf(stderr, _("grubby: unable to read %s: %s\n"),	if (!grubConf)
2876	executable, strerror(errno));	return 1;
	return 1;
	}
	close(fd);
2877
2878	return checkDeviceBootloader(boot, bootSect);	while ((res = getline(&line, &len, grubConf)) != -1) {
2879	}	if (line[res - 1] == '\n')
2880		line[res - 1] = '\0';
2881		else if (len > res)
2882		line[res] = '\0';
2883		else {
2884		line = realloc(line, res + 1);
2885		line[res] = '\0';
2886		}
2887
2888	static char * getRootSpecifier(char * str) {	if (!strncmp(line, "setup", 5)) {
2889	char * idx, * rootspec = NULL;	if (strstr(line, "--force-lba")) {
2890		*lbaPtr = 1;
2891		} else {
2892		*lbaPtr = 0;
2893		}
2894		dbgPrintf("lba: %i\n", *lbaPtr);
2895		break;
2896		}
2897		}
2898
2899	if (*str == '(') {	free(line);
2900	idx = rootspec = strdup(str);	fclose(grubConf);
2901	while(*idx && (*idx != ')') && (!isspace(*idx))) idx++;	return 0;
	*(++idx) = '\0';
	}
	return rootspec;
2902	}	}
2903
2904	static char * getInitrdVal(struct grubConfig * config,	int suseGrubConfGetInstallDevice(const char *path, char **devicePtr)
2905	const char * prefix, struct singleLine *tmplLine,	{
2906	const char * newKernelInitrd,	FILE *grubConf;
2907	char ** extraInitrds, int extraInitrdCount)	char *line = NULL;
2908	{	size_t res = 0, len = 0;
2909	char *initrdVal, *end;	char *lastParamPtr = NULL;
2910	int i;	char *secLastParamPtr = NULL;
2911	size_t totalSize;	char installDeviceNumber = '\0';
2912	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;
	}
2913
2914	initrdVal = end = malloc(totalSize);	if (!path)
2915		return 1;
2916		if (!devicePtr)
2917		return 1;
2918
2919	end = stpcpy (end, newKernelInitrd + prefixLen);	grubConf = fopen(path, "r");
2920		if (!grubConf)
2921		return 1;
2922
2923	separatorChar = getKeywordByType(LT_INITRD, config->cfi)->separatorChar;	while ((res = getline(&line, &len, grubConf)) != -1) {
2924	for (i = 0; i < extraInitrdCount; i++) {	if (strncmp(line, "setup", 5))
2925	const char *extraInitrd;	continue;
2926	int j;
2927		if (line[res - 1] == '\n')
2928		line[res - 1] = '\0';
2929		else if (len > res)
2930		line[res] = '\0';
2931		else {
2932		line = realloc(line, res + 1);
2933		line[res] = '\0';
2934		}
2935
2936	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;
2937
2938	if (j != tmplLine->numElements)	/* Last parameter in grub may be an optional IMAGE_DEVICE */
2939	continue;	while (!isspace(*lastParamPtr))
2940	}	lastParamPtr--;
2941		lastParamPtr++;
2942
2943		secLastParamPtr = lastParamPtr - 2;
2944		dbgPrintf("lastParamPtr: %s\n", lastParamPtr);
2945
2946		if (lastParamPtr + 3 > bounds) {
2947		dbgPrintf("lastParamPtr going over boundary");
2948		fclose(grubConf);
2949		free(line);
2950		return 1;
2951		}
2952		if (!strncmp(lastParamPtr, "(hd", 3))
2953		lastParamPtr += 3;
2954		dbgPrintf("lastParamPtr: %c\n", *lastParamPtr);
2955
2956		/*
2957		* Second last parameter will decide wether last parameter is
2958		* an IMAGE_DEVICE or INSTALL_DEVICE
2959		*/
2960		while (!isspace(*secLastParamPtr))
2961		secLastParamPtr--;
2962		secLastParamPtr++;
2963
2964		if (secLastParamPtr + 3 > bounds) {
2965		dbgPrintf("secLastParamPtr going over boundary");
2966		fclose(grubConf);
2967		free(line);
2968		return 1;
2969		}
2970		dbgPrintf("secLastParamPtr: %s\n", secLastParamPtr);
2971		if (!strncmp(secLastParamPtr, "(hd", 3)) {
2972		secLastParamPtr += 3;
2973		dbgPrintf("secLastParamPtr: %c\n", *secLastParamPtr);
2974		installDeviceNumber = *secLastParamPtr;
2975		} else {
2976		installDeviceNumber = *lastParamPtr;
2977		}
2978
2979	*end++ = separatorChar;	*devicePtr = malloc(6);
2980	end = stpcpy(end, extraInitrd);	snprintf(*devicePtr, 6, "(hd%c)", installDeviceNumber);
2981	}	dbgPrintf("installDeviceNumber: %c\n", installDeviceNumber);
2982		fclose(grubConf);
2983		free(line);
2984		return 0;
2985		}
2986
2987	return initrdVal;	free(line);
2988		fclose(grubConf);
2989		return 1;
2990	}	}
2991
2992	int addNewKernel(struct grubConfig * config, struct singleEntry * template,	int grubGetBootFromDeviceMap(const char *device, char **bootPtr)
2993	const char * prefix,	{
2994	char * newKernelPath, char * newKernelTitle,	FILE *deviceMap;
2995	char * newKernelArgs, char * newKernelInitrd,	char *line = NULL;
2996	char ** extraInitrds, int extraInitrdCount,	size_t res = 0, len = 0;
2997	char * newMBKernel, char * newMBKernelArgs) {	char *devicePtr;
2998	struct singleEntry * new;	char *bounds = NULL;
2999	struct singleLine * newLine = NULL, * tmplLine = NULL, * masterLine = NULL;	const char *path;
3000	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;
3001
3002	sprintf(buf, "TITLE=%.*s", config->cfi->maxTitleLength, newKernelTitle);	if (!device)
3003	while (findEntryByPath(config, buf, NULL, NULL)) {	return 1;
3004	sprintf(numBuf, "%d", i++);	if (!bootPtr)
3005	strcpy(buf + strlen(buf) - strlen(numBuf), numBuf);	return 1;
	}
3006
3007	newKernelTitle = buf + 6;	if ((path = getenv("GRUBBY_GRUB_DEVICE_MAP")) == NULL)
3008	}	path = default_path;
3009
3010	new = malloc(sizeof(*new));	dbgPrintf("opening grub device.map file from: %s\n", path);
3011	new->skip = 0;	deviceMap = fopen(path, "r");
3012	new->multiboot = 0;	if (!deviceMap)
3013	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;
	}
3014
3015	if (template) {	while ((res = getline(&line, &len, deviceMap)) != -1) {
3016	for (masterLine = template->lines;	if (!strncmp(line, "#", 1))
3017	masterLine && (tmplLine = lineDup(masterLine));	continue;
3018	lineFree(tmplLine), masterLine = masterLine->next)
3019	{	if (line[res - 1] == '\n')
3020	dbgPrintf("addNewKernel processing %d\n", tmplLine->type);	line[res - 1] = '\0';
3021		else if (len > res)
3022	/* skip comments */	line[res] = '\0';
3023	chptr = tmplLine->indent;	else {
3024	while (*chptr && isspace(*chptr)) chptr++;	line = realloc(line, res + 1);
3025	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->entrySeparator) {
	case LT_KERNEL:
	if (new->multiboot && config->cfi->mbHyperFirst) {
	/* fall through to LT_HYPER */
	} else {
	newLine = addLine(new, config->cfi, LT_KERNEL,
	config->primaryIndent,
	newKernelPath + strlen(prefix));
	needs &= ~NEED_KERNEL;
	break;
3026	}	}
3027
3028	case LT_HYPER:	devicePtr = line;
3029	newLine = addLine(new, config->cfi, LT_HYPER,	bounds = line + res;
	config->primaryIndent,
	newMBKernel + strlen(prefix));
	needs &= ~NEED_MB;
	break;
3030
3031	case LT_TITLE:	while ((isspace(*line) && ((devicePtr + 1) <= bounds)))
3032	if( useextlinuxmenu != 0 ){ // We just need useextlinuxmenu to not be zero (set above)	devicePtr++;
3033	char * templabel;	dbgPrintf("device: %s\n", devicePtr);
3034	int x = 0, y = 0;
3035		if (!strncmp(devicePtr, device, strlen(device))) {
3036	templabel = strdup(newKernelTitle);	devicePtr += strlen(device);
3037	while( templabel[x]){	while (isspace(*devicePtr)
3038	if( templabel[x] == ' ' ){	&& ((devicePtr + 1) <= bounds))
3039	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;
3040
3041	default:	*bootPtr = strdup(devicePtr);
3042	abort();	break;
3043		}
3044	}	}
	}
3045
3046	/* add the remainder of the lines, i.e. those that either	free(line);
3047	* weren't present in the template, or in the case of no template,	fclose(deviceMap);
3048	* all the lines following the entrySeparator.	return 0;
3049	*/	}
	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;
	}
3050
3051	if (needs) {	int suseGrubConfGetBoot(const char *path, char **bootPtr)
3052	printf(_("grubby: needs=%d, aborting\n"), needs);	{
3053	abort();	char *grubDevice;
	}
3054
3055	if (updateImage(config, "0", prefix, newKernelArgs, NULL,	if (suseGrubConfGetInstallDevice(path, &grubDevice))
3056	newMBKernelArgs, NULL)) return 1;	dbgPrintf("error looking for grub installation device\n");
3057		else
3058		dbgPrintf("grubby installation device: %s\n", grubDevice);
3059
3060	return 0;	if (grubGetBootFromDeviceMap(grubDevice, bootPtr))
3061		dbgPrintf("error looking for grub boot device\n");
3062		else
3063		dbgPrintf("grubby boot device: %s\n", *bootPtr);
3064
3065		free(grubDevice);
3066		return 0;
3067	}	}
3068
3069	static void traceback(int signum)	int parseSuseGrubConf(int *lbaPtr, char **bootPtr)
3070	{	{
3071	void *array[40];	/*
3072	size_t size;	* This SuSE grub configuration file at this location is not your
3073		* average grub configuration file, but instead the grub commands
3074		* used to setup grub on that system.
3075		*/
3076		const char *path;
3077		const static char default_path[] = "/etc/grub.conf";
3078
3079	signal(SIGSEGV, SIG_DFL);	if ((path = getenv("GRUBBY_SUSE_GRUB_CONF")) == NULL)
3080	memset(array, '\0', sizeof (array));	path = default_path;
3081	size = backtrace(array, 40);
3082		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);
3083	return 1;	return 1;
3084	}
3085	break;	if (lbaPtr) {
3086		*lbaPtr = 0;
3087		if (suseGrubConfGetLba(path, lbaPtr))
3088		return 1;
3089	}	}
	}
3090
3091	if (arg < -1) {	if (bootPtr) {
3092	fprintf(stderr, _("grubby: bad argument %s: %s\n"),	*bootPtr = NULL;
3093	poptBadOption(optCon, POPT_BADOPTION_NOALIAS),	suseGrubConfGetBoot(path, bootPtr);
3094	poptStrerror(arg));	}
	return 1;
	}
3095
3096	if ((chptr = poptGetArg(optCon))) {	return 0;
3097	fprintf(stderr, _("grubby: unexpected argument %s\n"), chptr);	}
	return 1;
	}
3098
3099	if ((configureLilo + configureGrub + configureELilo +	int parseSysconfigGrub(int *lbaPtr, char **bootPtr)
3100	configureYaboot + configureSilo + configureZipl +	{
3101	configureExtLinux ) > 1) {	FILE *in;
3102	fprintf(stderr, _("grubby: cannot specify multiple bootloaders\n"));	char buf[1024];
3103	return 1;	char *chptr;
3104	} else if (bootloaderProbe && grubConfig) {	char *start;
3105	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;
	}
3106
3107	if (!cfi) {	in = fopen("/etc/sysconfig/grub", "r");
3108	#ifdef __ia64__	if (!in)
3109	cfi = &eliloConfigType;	return 1;
	#elif __powerpc__
	cfi = &yabootConfigType;
	#elif __sparc__
	cfi = &siloConfigType;
	#elif __s390__
	cfi = &ziplConfigType;
	#elif __s390x__
	cfi = &ziplConfigtype;
	#else
	cfi = &grubConfigType;
	#endif
	}
3110
3111	if (!grubConfig)	if (lbaPtr)
3112	grubConfig = cfi->defaultConfig;	*lbaPtr = 0;
3113		if (bootPtr)
3114		*bootPtr = NULL;
3115
3116		while (fgets(buf, sizeof(buf), in)) {
3117		start = buf;
3118		while (isspace(*start))
3119		start++;
3120		if (*start == '#')
3121		continue;
3122
3123		chptr = strchr(start, '=');
3124		if (!chptr)
3125		continue;
3126		chptr--;
3127		while (*chptr && isspace(*chptr))
3128		chptr--;
3129		chptr++;
3130		*chptr = '\0';
3131
3132		param = chptr + 1;
3133		while (*param && isspace(*param))
3134		param++;
3135		if (*param == '=') {
3136		param++;
3137		while (*param && isspace(*param))
3138		param++;
3139		}
3140
3141	if (bootloaderProbe && (displayDefault || kernelInfo || newKernelVersion ||	chptr = param;
3142	newKernelPath || removeKernelPath || makeDefault ||	while (*chptr && !isspace(*chptr))
3143	defaultKernel)) {	chptr++;
3144	fprintf(stderr, _("grubby: --bootloader-probe may not be used with "	*chptr = '\0';
3145	"specified option"));
3146	return 1;	if (!strcmp(start, "forcelba") && !strcmp(param, "1") && lbaPtr)
3147	}	*lbaPtr = 1;
3148		else if (!strcmp(start, "boot") && bootPtr)
3149		*bootPtr = strdup(param);
3150		}
3151
3152	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;
	}
3153
3154	if (newKernelPath && !newKernelTitle) {	return 0;
3155	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;
	}
3156
3157	if (newKernelPath && updateKernelPath) {	void dumpSysconfigGrub(void)
3158	fprintf(stderr, _("grubby: --add-kernel and --update-kernel may"	{
3159	"not be used together"));	char *boot = NULL;
3160	return 1;	int lba;
	}
3161
3162	if (makeDefault && defaultKernel) {	if (isSuseSystem()) {
3163	fprintf(stderr, _("grubby: --make-default and --default-kernel "	if (parseSuseGrubConf(&lba, &boot)) {
3164	"may not be used together\n"));	free(boot);
3165	return 1;	return;
3166	} else if (defaultKernel && removeKernelPath &&	}
3167	!strcmp(defaultKernel, removeKernelPath)) {	} else {
3168	fprintf(stderr, _("grubby: cannot make removed kernel the default\n"));	if (parseSysconfigGrub(&lba, &boot)) {
3169	return 1;	free(boot);
3170	} else if (defaultKernel && newKernelPath &&	return;
3171	!strcmp(defaultKernel, newKernelPath)) {	}
3172	makeDefault = 1;	}
	defaultKernel = NULL;
	}
3173
3174	if (!strcmp(grubConfig, "-") && !outputFile) {	if (lba)
3175	fprintf(stderr, _("grubby: output file must be specified if stdin "	printf("lba\n");
3176	"is used\n"));	if (boot) {
3177	return 1;	printf("boot=%s\n", boot);
3178	}	free(boot);
3179		}
3180		}
3181
3182	if (!removeKernelPath && !newKernelPath && !displayDefault && !defaultKernel	int displayInfo(struct grubConfig *config, char *kernel, const char *prefix)
3183	&& !kernelInfo && !bootloaderProbe && !updateKernelPath	{
3184	&& !removeMBKernel) {	int i = 0;
3185	fprintf(stderr, _("grubby: no action specified\n"));	struct singleEntry *entry;
3186	return 1;	struct singleLine *line;
3187	}
3188		entry = findEntryByPath(config, kernel, prefix, &i);
3189		if (!entry) {
3190		fprintf(stderr, _("grubby: kernel not found\n"));
3191		return 1;
3192		}
3193
3194	flags |= badImageOkay ? GRUBBY_BADIMAGE_OKAY : 0;	/* this is a horrible hack to support /etc/sysconfig/grub; there must
3195		be a better way */
3196		if (config->cfi == &grubConfigType) {
3197		dumpSysconfigGrub();
3198		} else {
3199		line = getLineByType(LT_BOOT, config->theLines);
3200		if (line && line->numElements >= 1) {
3201		printf("boot=%s\n", line->elements[1].item);
3202		}
3203
3204	if (cfi->needsBootPrefix) {	line = getLineByType(LT_LBA, config->theLines);
3205	if (!bootPrefix) {	if (line)
3206	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';
3207	}	}
	} else {
	bootPrefix = "";
	}
3208
3209	if (!cfi->mbAllowExtraInitRds &&	displayEntry(config, entry, prefix, i);
	extraInitrdCount > 0) {
	fprintf(stderr, _("grubby: %s doesn't allow multiple initrds\n"), cfi->defaultConfig);
	return 1;
	}
3210
3211	if (bootloaderProbe) {	i++;
3212	int lrc = 0, grc = 0, erc = 0;	while ((entry = findEntryByPath(config, kernel, prefix, &i))) {
3213	struct grubConfig * lconfig, * gconfig;	displayEntry(config, entry, prefix, i);
3214		i++;
3215	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");
3216
3217	return 0;	return 0;
3218	}	}
3219
3220	config = readConfig(grubConfig, cfi);	struct singleLine *addLineTmpl(struct singleEntry *entry,
3221	if (!config) return 1;	struct singleLine *tmplLine,
3222		struct singleLine *prevLine,
3223		const char *val, struct configFileInfo *cfi)
3224		{
3225		struct singleLine *newLine = lineDup(tmplLine);
3226
3227	if (displayDefault) {	if (isEfi && cfi == &grub2ConfigType) {
3228	struct singleLine * line;	enum lineType_e old = newLine->type;
3229	struct singleEntry * entry;	newLine->type = preferredLineType(newLine->type, cfi);
3230	char * rootspec;	if (old != newLine->type)
3231		newLine->elements[0].item =
3232	if (config->defaultImage == -1) return 0;	getKeyByType(newLine->type, cfi);
3233	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));
3234
3235	return 0;	if (val) {
3236	} else if (kernelInfo)	/* override the inherited value with our own.
3237	return displayInfo(config, kernelInfo, bootPrefix);	* This is a little weak because it only applies to elements[1]
3238		*/
3239		if (newLine->numElements > 1)
3240		removeElement(newLine, 1);
3241		insertElement(newLine, val, 1, cfi);
3242
3243		/* but try to keep the rootspec from the template... sigh */
3244		if (tmplLine->
3245		type & (LT_HYPER | LT_KERNEL | LT_MBMODULE | LT_INITRD |
3246		LT_KERNEL_EFI | LT_INITRD_EFI | LT_KERNEL_16 |
3247		LT_INITRD_16)) {
3248		char *rootspec =
3249		getRootSpecifier(tmplLine->elements[1].item);
3250		if (rootspec != NULL) {
3251		free(newLine->elements[1].item);
3252		newLine->elements[1].item =
3253		sdupprintf("%s%s", rootspec, val);
3254		}
3255		}
3256		}
3257
3258	if (copyDefault) {	dbgPrintf("addLineTmpl(%s)\n", newLine->numElements ?
3259	template = findTemplate(config, bootPrefix, NULL, 0, flags);	newLine->elements[0].item : "");
	if (!template) return 1;
	}
3260
3261	markRemovedImage(config, removeKernelPath, bootPrefix);	if (!entry->lines) {
3262	markRemovedImage(config, removeMBKernel, bootPrefix);	/* first one on the list */
3263	setDefaultImage(config, newKernelPath != NULL, defaultKernel, makeDefault,	entry->lines = newLine;
3264	bootPrefix, flags);	} else if (prevLine) {
3265	setFallbackImage(config, newKernelPath != NULL);	/* add after prevLine */
3266	if (updateImage(config, updateKernelPath, bootPrefix, newKernelArgs,	newLine->next = prevLine->next;
3267	removeArgs, newMBKernelArgs, removeMBKernelArgs)) return 1;	prevLine->next = newLine;
3268	if (updateKernelPath && newKernelInitrd) {	}
3269	if (updateInitrd(config, updateKernelPath, bootPrefix,
3270	newKernelInitrd)) return 1;	return newLine;
3271	}	}
3272	if (addNewKernel(config, template, bootPrefix, newKernelPath,
3273	newKernelTitle, newKernelArgs, newKernelInitrd,	/* val may be NULL */
3274	extraInitrds, extraInitrdCount,	struct singleLine *addLine(struct singleEntry *entry,
3275	newMBKernel, newMBKernelArgs)) return 1;	struct configFileInfo *cfi,
3276		enum lineType_e type, char *defaultIndent,
3277		const char *val)
3278	if (numEntries(config) == 0) {	{
3279	fprintf(stderr, _("grubby: doing this would leave no kernel entries. "	struct singleLine *line, *prev;
3280	"Not writing out new config.\n"));	struct keywordTypes *kw;
3281	return 1;	struct singleLine tmpl;
3282	}
3283		/* NB: This function shouldn't allocate items on the heap, rather on
3284		* the stack since it calls addLineTmpl which will make copies.
3285		*/
3286		if (type == LT_TITLE && cfi->titleBracketed) {
3287		/* we're doing a bracketed title (zipl) */
3288		tmpl.type = type;
3289		tmpl.numElements = 1;
3290		tmpl.elements = alloca(sizeof(*tmpl.elements));
3291		tmpl.elements[0].item = alloca(strlen(val) + 3);
3292		sprintf(tmpl.elements[0].item, "[%s]", val);
3293		tmpl.elements[0].indent = "";
3294		val = NULL;
3295		} else if (type == LT_MENUENTRY) {
3296		char *lineend = "--class gnu-linux --class gnu --class os {";
3297		if (!val) {
3298		fprintf(stderr,
3299		"Line type LT_MENUENTRY requires a value\n");
3300		abort();
3301		}
3302		kw = getKeywordByType(type, cfi);
3303		if (!kw) {
3304		fprintf(stderr,
3305		"Looking up keyword for unknown type %d\n",
3306		type);
3307		abort();
3308		}
3309		tmpl.indent = "";
3310		tmpl.type = type;
3311		tmpl.numElements = 3;
3312		tmpl.elements =
3313		alloca(sizeof(*tmpl.elements) * tmpl.numElements);
3314		tmpl.elements[0].item = kw->key;
3315		tmpl.elements[0].indent = alloca(2);
3316		sprintf(tmpl.elements[0].indent, "%c", kw->nextChar);
3317		tmpl.elements[1].item = (char *)val;
3318		tmpl.elements[1].indent = alloca(2);
3319		sprintf(tmpl.elements[1].indent, "%c", kw->nextChar);
3320		tmpl.elements[2].item = alloca(strlen(lineend) + 1);
3321		strcpy(tmpl.elements[2].item, lineend);
3322		tmpl.elements[2].indent = "";
3323		} else {
3324		kw = getKeywordByType(type, cfi);
3325		if (!kw) {
3326		fprintf(stderr,
3327		"Looking up keyword for unknown type %d\n",
3328		type);
3329		abort();
3330		}
3331		tmpl.type = type;
3332		tmpl.numElements = val ? 2 : 1;
3333		tmpl.elements =
3334		alloca(sizeof(*tmpl.elements) * tmpl.numElements);
3335		tmpl.elements[0].item = kw->key;
3336		tmpl.elements[0].indent = alloca(2);
3337		sprintf(tmpl.elements[0].indent, "%c", kw->nextChar);
3338		if (val) {
3339		tmpl.elements[1].item = (char *)val;
3340		tmpl.elements[1].indent = "";
3341		}
3342		}
3343
3344		/* The last non-empty line gives us the indention to us and the line
3345		* to insert after. Note that comments are considered empty lines,
3346		* which may not be ideal? If there are no lines or we are looking at
3347		* the first line, we use defaultIndent (the first line is normally
3348		* indented differently from the rest) */
3349		for (line = entry->lines, prev = NULL; line; line = line->next) {
3350		if (line->numElements)
3351		prev = line;
3352		/* fall back on the last line if prev isn't otherwise set */
3353		if (!line->next && !prev)
3354		prev = line;
3355		}
3356
3357		struct singleLine *menuEntry;
3358		menuEntry = getLineByType(LT_MENUENTRY, entry->lines);
3359		if (tmpl.type == LT_ENTRY_END) {
3360		if (menuEntry)
3361		tmpl.indent = menuEntry->indent;
3362		else
3363		tmpl.indent = defaultIndent ? : "";
3364		} else if (tmpl.type != LT_MENUENTRY) {
3365		if (menuEntry)
3366		tmpl.indent = "\t";
3367		else if (prev == entry->lines)
3368		tmpl.indent = defaultIndent ? : "";
3369		else
3370		tmpl.indent = prev->indent;
3371		}
3372
3373		return addLineTmpl(entry, &tmpl, prev, val, cfi);
3374		}
3375
3376		void removeLine(struct singleEntry *entry, struct singleLine *line)
3377		{
3378		struct singleLine *prev;
3379		int i;
3380
3381		for (i = 0; i < line->numElements; i++) {
3382		free(line->elements[i].item);
3383		free(line->elements[i].indent);
3384		}
3385		free(line->elements);
3386		free(line->indent);
3387
3388		if (line == entry->lines) {
3389		entry->lines = line->next;
3390		} else {
3391		prev = entry->lines;
3392		while (prev->next != line)
3393		prev = prev->next;
3394		prev->next = line->next;
3395		}
3396
3397		free(line);
3398		}
3399
3400		static void requote(struct singleLine *tmplLine, struct configFileInfo *cfi)
3401		{
3402		struct singleLine newLine = {
3403		.indent = tmplLine->indent,
3404		.type = tmplLine->type,
3405		.next = tmplLine->next,
3406		};
3407		int firstQuotedItem = -1;
3408		int quoteLen = 0;
3409		int j;
3410		int element = 0;
3411		char *c;
3412
3413		c = malloc(strlen(tmplLine->elements[0].item) + 1);
3414		strcpy(c, tmplLine->elements[0].item);
3415		insertElement(&newLine, c, element++, cfi);
3416		free(c);
3417		c = NULL;
3418
3419		for (j = 1; j < tmplLine->numElements; j++) {
3420		if (firstQuotedItem == -1) {
3421		quoteLen += strlen(tmplLine->elements[j].item);
3422
3423		if (isquote(tmplLine->elements[j].item[0])) {
3424		firstQuotedItem = j;
3425		quoteLen +=
3426		strlen(tmplLine->elements[j].indent);
3427		} else {
3428		c = malloc(quoteLen + 1);
3429		strcpy(c, tmplLine->elements[j].item);
3430		insertElement(&newLine, c, element++, cfi);
3431		free(c);
3432		quoteLen = 0;
3433		}
3434		} else {
3435		int itemlen = strlen(tmplLine->elements[j].item);
3436		quoteLen += itemlen;
3437		quoteLen += strlen(tmplLine->elements[j].indent);
3438
3439		if (isquote(tmplLine->elements[j].item[itemlen - 1])) {
3440		c = malloc(quoteLen + 1);
3441		c[0] = '\0';
3442		for (int i = firstQuotedItem; i < j + 1; i++) {
3443		strcat(c, tmplLine->elements[i].item);
3444		strcat(c, tmplLine->elements[i].indent);
3445		}
3446		insertElement(&newLine, c, element++, cfi);
3447		free(c);
3448
3449		firstQuotedItem = -1;
3450		quoteLen = 0;
3451		}
3452		}
3453		}
3454		while (tmplLine->numElements)
3455		removeElement(tmplLine, 0);
3456		if (tmplLine->elements)
3457		free(tmplLine->elements);
3458
3459		tmplLine->numElements = newLine.numElements;
3460		tmplLine->elements = newLine.elements;
3461		}
3462
3463		static void insertElement(struct singleLine *line,
3464		const char *item, int insertHere,
3465		struct configFileInfo *cfi)
3466		{
3467		struct keywordTypes *kw;
3468		char indent[2] = "";
3469
3470		/* sanity check */
3471		if (insertHere > line->numElements) {
3472		dbgPrintf
3473		("insertElement() adjusting insertHere from %d to %d\n",
3474		insertHere, line->numElements);
3475		insertHere = line->numElements;
3476		}
3477
3478		line->elements = realloc(line->elements, (line->numElements + 1) *
3479		sizeof(*line->elements));
3480		memmove(&line->elements[insertHere + 1],
3481		&line->elements[insertHere],
3482		(line->numElements - insertHere) * sizeof(*line->elements));
3483		line->elements[insertHere].item = strdup(item);
3484
3485		kw = getKeywordByType(line->type, cfi);
3486
3487		if (line->numElements == 0) {
3488		indent[0] = '\0';
3489		} else if (insertHere == 0) {
3490		indent[0] = kw->nextChar;
3491		} else if (kw->separatorChar != '\0') {
3492		indent[0] = kw->separatorChar;
3493		} else {
3494		indent[0] = ' ';
3495		}
3496
3497		if (insertHere > 0 && line->elements[insertHere - 1].indent[0] == '\0') {
3498		/* move the end-of-line forward */
3499		line->elements[insertHere].indent =
3500		line->elements[insertHere - 1].indent;
3501		line->elements[insertHere - 1].indent = strdup(indent);
3502		} else {
3503		line->elements[insertHere].indent = strdup(indent);
3504		}
3505
3506		line->numElements++;
3507
3508		dbgPrintf("insertElement(%s, '%s%s', %d)\n",
3509		line->elements[0].item,
3510		line->elements[insertHere].item,
3511		line->elements[insertHere].indent, insertHere);
3512		}
3513
3514		static void removeElement(struct singleLine *line, int removeHere)
3515		{
3516		int i;
3517
3518		/* sanity check */
3519		if (removeHere >= line->numElements)
3520		return;
3521
3522		dbgPrintf("removeElement(%s, %d:%s)\n", line->elements[0].item,
3523		removeHere, line->elements[removeHere].item);
3524
3525		free(line->elements[removeHere].item);
3526
3527		if (removeHere > 1) {
3528		/* previous argument gets this argument's post-indentation */
3529		free(line->elements[removeHere - 1].indent);
3530		line->elements[removeHere - 1].indent =
3531		line->elements[removeHere].indent;
3532		} else {
3533		free(line->elements[removeHere].indent);
3534		}
3535
3536		/* now collapse the array, but don't bother to realloc smaller */
3537		for (i = removeHere; i < line->numElements - 1; i++)
3538		line->elements[i] = line->elements[i + 1];
3539
3540		line->numElements--;
3541		}
3542
3543		int argMatch(const char *one, const char *two)
3544		{
3545		char *first, *second;
3546		char *chptr;
3547
3548		first = strcpy(alloca(strlen(one) + 1), one);
3549		second = strcpy(alloca(strlen(two) + 1), two);
3550
3551		chptr = strchr(first, '=');
3552		if (chptr)
3553		*chptr = '\0';
3554
3555		chptr = strchr(second, '=');
3556		if (chptr)
3557		*chptr = '\0';
3558
3559		return strcmp(first, second);
3560		}
3561
3562		int updateActualImage(struct grubConfig *cfg, const char *image,
3563		const char *prefix, const char *addArgs,
3564		const char *removeArgs, int multibootArgs)
3565		{
3566		struct singleEntry *entry;
3567		struct singleLine *line, *rootLine;
3568		int index = 0;
3569		int i, k;
3570		const char **newArgs, **oldArgs;
3571		const char **arg;
3572		int useKernelArgs, useRoot;
3573		int firstElement;
3574		int *usedElements;
3575		int doreplace;
3576
3577		if (!image)
3578		return 0;
3579
3580		if (!addArgs) {
3581		newArgs = malloc(sizeof(*newArgs));
3582		*newArgs = NULL;
3583		} else {
3584		if (poptParseArgvString(addArgs, NULL, &newArgs)) {
3585		fprintf(stderr,
3586		_("grubby: error separating arguments '%s'\n"),
3587		addArgs);
3588		return 1;
3589		}
3590		}
3591
3592		if (!removeArgs) {
3593		oldArgs = malloc(sizeof(*oldArgs));
3594		*oldArgs = NULL;
3595		} else {
3596		if (poptParseArgvString(removeArgs, NULL, &oldArgs)) {
3597		fprintf(stderr,
3598		_("grubby: error separating arguments '%s'\n"),
3599		removeArgs);
3600		free(newArgs);
3601		return 1;
3602		}
3603		}
3604
3605		useKernelArgs = (getKeywordByType(LT_KERNELARGS, cfg->cfi)
3606		&& (!multibootArgs || cfg->cfi->mbConcatArgs));
3607
3608		useRoot = (getKeywordByType(LT_ROOT, cfg->cfi)
3609		&& !multibootArgs);
3610
3611		for (; (entry = findEntryByPath(cfg, image, prefix, &index)); index++) {
3612
3613		if (multibootArgs && !entry->multiboot)
3614		continue;
3615
3616		/* Determine where to put the args.  If this config supports
3617		* LT_KERNELARGS, use that.  Otherwise use
3618		* LT_HYPER/LT_KERNEL/LT_MBMODULE lines.
3619		*/
3620		if (useKernelArgs) {
3621		line = getLineByType(LT_KERNELARGS, entry->lines);
3622		if (!line) {
3623		/* no LT_KERNELARGS, need to add it */
3624		line = addLine(entry, cfg->cfi, LT_KERNELARGS,
3625		cfg->secondaryIndent, NULL);
3626		}
3627		firstElement = 1;
3628
3629		} else if (multibootArgs) {
3630		line = getLineByType(LT_HYPER, entry->lines);
3631		if (!line) {
3632		/* a multiboot entry without LT_HYPER? */
3633		continue;
3634		}
3635		firstElement = 2;
3636
3637		} else {
3638		line =
3639		getLineByType(LT_KERNEL | LT_MBMODULE |
3640		LT_KERNEL_EFI | LT_KERNEL_16,
3641		entry->lines);
3642		if (!line) {
3643		/* no LT_KERNEL or LT_MBMODULE in this entry? */
3644		continue;
3645		}
3646		firstElement = 2;
3647		}
3648
3649		/* handle the elilo case which does:
3650		*   append="hypervisor args -- kernel args"
3651		*/
3652		if (entry->multiboot && cfg->cfi->mbConcatArgs) {
3653		/* this is a multiboot entry, make sure there's
3654		* -- on the args line
3655		*/
3656		for (i = firstElement; i < line->numElements; i++) {
3657		if (!strcmp(line->elements[i].item, "--"))
3658		break;
3659		}
3660		if (i == line->numElements) {
3661		/* assume all existing args are kernel args,
3662		* prepend -- to make it official
3663		*/
3664		insertElement(line, "--", firstElement,
3665		cfg->cfi);
3666		i = firstElement;
3667		}
3668		if (!multibootArgs) {
3669		/* kernel args start after the -- */
3670		firstElement = i + 1;
3671		}
3672		} else if (cfg->cfi->mbConcatArgs) {
3673		/* this is a non-multiboot entry, remove hyper args */
3674		for (i = firstElement; i < line->numElements; i++) {
3675		if (!strcmp(line->elements[i].item, "--"))
3676		break;
3677		}
3678		if (i < line->numElements) {
3679		/* remove args up to -- */
3680		while (strcmp
3681		(line->elements[firstElement].item,
3682		"--"))
3683		removeElement(line, firstElement);
3684		/* remove -- */
3685		removeElement(line, firstElement);
3686		}
3687		}
3688
3689		usedElements = calloc(line->numElements, sizeof(*usedElements));
3690
3691		for (k = 0, arg = newArgs; *arg; arg++, k++) {
3692
3693		doreplace = 1;
3694		for (i = firstElement; i < line->numElements; i++) {
3695		if (multibootArgs && cfg->cfi->mbConcatArgs &&
3696		!strcmp(line->elements[i].item, "--")) {
3697		/* reached the end of hyper args, insert here */
3698		doreplace = 0;
3699		break;
3700		}
3701		if (usedElements[i])
3702		continue;
3703		if (!argMatch(line->elements[i].item, *arg)) {
3704		usedElements[i] = 1;
3705		break;
3706		}
3707		}
3708
3709		if (i < line->numElements && doreplace) {
3710		/* direct replacement */
3711		free(line->elements[i].item);
3712		line->elements[i].item = strdup(*arg);
3713
3714		} else if (useRoot && !strncmp(*arg, "root=/dev/", 10)) {
3715		/* root= replacement */
3716		rootLine = getLineByType(LT_ROOT, entry->lines);
3717		if (rootLine) {
3718		free(rootLine->elements[1].item);
3719		rootLine->elements[1].item =
3720		strdup(*arg + 5);
3721		} else {
3722		rootLine =
3723		addLine(entry, cfg->cfi, LT_ROOT,
3724		cfg->secondaryIndent,
3725		*arg + 5);
3726		}
3727		}
3728
3729		else {
3730		/* insert/append */
3731		insertElement(line, *arg, i, cfg->cfi);
3732		usedElements =
3733		realloc(usedElements,
3734		line->numElements *
3735		sizeof(*usedElements));
3736		memmove(&usedElements[i + 1], &usedElements[i],
3737		line->numElements - i - 1);
3738		usedElements[i] = 1;
3739
3740		/* if we updated a root= here even though
3741		* there is a LT_ROOT available we need to
3742		* remove the LT_ROOT entry (this will happen
3743		* if we switch from a device to a label) */
3744		if (useRoot && !strncmp(*arg, "root=", 5)) {
3745		rootLine =
3746		getLineByType(LT_ROOT,
3747		entry->lines);
3748		if (rootLine)
3749		removeLine(entry, rootLine);
3750		}
3751		}
3752		}
3753
3754		free(usedElements);
3755
3756		for (arg = oldArgs; *arg; arg++) {
3757		for (i = firstElement; i < line->numElements; i++) {
3758		if (multibootArgs && cfg->cfi->mbConcatArgs &&
3759		!strcmp(line->elements[i].item, "--"))
3760		/* reached the end of hyper args, stop here */
3761		break;
3762		if (!argMatch(line->elements[i].item, *arg)) {
3763		removeElement(line, i);
3764		break;
3765		}
3766		}
3767		/* handle removing LT_ROOT line too */
3768		if (useRoot && !strncmp(*arg, "root=", 5)) {
3769		rootLine = getLineByType(LT_ROOT, entry->lines);
3770		if (rootLine)
3771		removeLine(entry, rootLine);
3772		}
3773		}
3774
3775		if (line->numElements == 1) {
3776		/* don't need the line at all (note it has to be a
3777		LT_KERNELARGS for this to happen */
3778		removeLine(entry, line);
3779		}
3780		}
3781
3782		free(newArgs);
3783		free(oldArgs);
3784
3785		return 0;
3786		}
3787
3788		int updateImage(struct grubConfig *cfg, const char *image,
3789		const char *prefix, const char *addArgs,
3790		const char *removeArgs,
3791		const char *addMBArgs, const char *removeMBArgs)
3792		{
3793		int rc = 0;
3794
3795		if (!image)
3796		return rc;
3797
3798		/* update the main args first... */
3799		if (addArgs || removeArgs)
3800		rc = updateActualImage(cfg, image, prefix, addArgs, removeArgs,
3801		0);
3802		if (rc)
3803		return rc;
3804
3805		/* and now any multiboot args */
3806		if (addMBArgs || removeMBArgs)
3807		rc = updateActualImage(cfg, image, prefix, addMBArgs,
3808		removeMBArgs, 1);
3809		return rc;
3810		}
3811
3812		int addMBInitrd(struct grubConfig *cfg, const char *newMBKernel,
3813		const char *image, const char *prefix, const char *initrd,
3814		const char *title)
3815		{
3816		struct singleEntry *entry;
3817		struct singleLine *line, *kernelLine, *endLine = NULL;
3818		int index = 0;
3819
3820		if (!image)
3821		return 0;
3822
3823		for (; (entry = findEntryByPath(cfg, image, prefix, &index)); index++) {
3824		kernelLine = getLineByType(LT_MBMODULE, entry->lines);
3825		if (!kernelLine)
3826		continue;
3827
3828		/* if title is supplied, the entry's title must match it. */
3829		if (title) {
3830		char *linetitle;
3831
3832		line =
3833		getLineByType(LT_TITLE | LT_MENUENTRY,
3834		entry->lines);
3835		if (!line)
3836		continue;
3837
3838		linetitle = extractTitle(cfg, line);
3839		if (!linetitle)
3840		continue;
3841		if (strcmp(title, linetitle)) {
3842		free(linetitle);
3843		continue;
3844		}
3845		free(linetitle);
3846		}
3847
3848		if (prefix) {
3849		int prefixLen = strlen(prefix);
3850		if (!strncmp(initrd, prefix, prefixLen))
3851		initrd += prefixLen;
3852		}
3853		endLine = getLineByType(LT_ENTRY_END, entry->lines);
3854		if (endLine)
3855		removeLine(entry, endLine);
3856		line =
3857		addLine(entry, cfg->cfi,
3858		preferredLineType(LT_MBMODULE, cfg->cfi),
3859		kernelLine->indent, initrd);
3860		if (!line)
3861		return 1;
3862		if (endLine) {
3863		line = addLine(entry, cfg->cfi, LT_ENTRY_END, "", NULL);
3864		if (!line)
3865		return 1;
3866		}
3867
3868		break;
3869		}
3870
3871		return 0;
3872		}
3873
3874		int updateInitrd(struct grubConfig *cfg, const char *image,
3875		const char *prefix, const char *initrd, const char *title)
3876		{
3877		struct singleEntry *entry;
3878		struct singleLine *line, *kernelLine, *endLine = NULL;
3879		int index = 0;
3880
3881		if (!image)
3882		return 0;
3883
3884		for (; (entry = findEntryByPath(cfg, image, prefix, &index)); index++) {
3885		kernelLine =
3886		getLineByType(LT_KERNEL | LT_KERNEL_EFI | LT_KERNEL_16,
3887		entry->lines);
3888		if (!kernelLine)
3889		continue;
3890
3891		/* if title is supplied, the entry's title must match it. */
3892		if (title) {
3893		char *linetitle;
3894
3895		line =
3896		getLineByType(LT_TITLE | LT_MENUENTRY,
3897		entry->lines);
3898		if (!line)
3899		continue;
3900
3901		linetitle = extractTitle(cfg, line);
3902		if (!linetitle)
3903		continue;
3904		if (strcmp(title, linetitle)) {
3905		free(linetitle);
3906		continue;
3907		}
3908		free(linetitle);
3909		}
3910
3911		line =
3912		getLineByType(LT_INITRD | LT_INITRD_EFI | LT_INITRD_16,
3913		entry->lines);
3914		if (line)
3915		removeLine(entry, line);
3916		if (prefix) {
3917		int prefixLen = strlen(prefix);
3918		if (!strncmp(initrd, prefix, prefixLen))
3919		initrd += prefixLen;
3920		}
3921		endLine = getLineByType(LT_ENTRY_END, entry->lines);
3922		if (endLine)
3923		removeLine(entry, endLine);
3924		enum lineType_e lt;
3925		switch (kernelLine->type) {
3926		case LT_KERNEL:
3927		lt = LT_INITRD;
3928		break;
3929		case LT_KERNEL_EFI:
3930		lt = LT_INITRD_EFI;
3931		break;
3932		case LT_KERNEL_16:
3933		lt = LT_INITRD_16;
3934		break;
3935		default:
3936		lt = preferredLineType(LT_INITRD, cfg->cfi);
3937		}
3938		line = addLine(entry, cfg->cfi, lt, kernelLine->indent, initrd);
3939		if (!line)
3940		return 1;
3941		if (endLine) {
3942		line = addLine(entry, cfg->cfi, LT_ENTRY_END, "", NULL);
3943		if (!line)
3944		return 1;
3945		}
3946
3947		break;
3948		}
3949
3950		return 0;
3951		}
3952
3953		int checkDeviceBootloader(const char *device, const unsigned char *boot)
3954		{
3955		int fd;
3956		unsigned char bootSect[512];
3957		int offset;
3958
3959		fd = open(device, O_RDONLY);
3960		if (fd < 0) {
3961		fprintf(stderr, _("grubby: unable to open %s: %s\n"),
3962		device, strerror(errno));
3963		return 1;
3964		}
3965
3966		if (read(fd, bootSect, 512) != 512) {
3967		fprintf(stderr, _("grubby: unable to read %s: %s\n"),
3968		device, strerror(errno));
3969		return 1;
3970		}
3971		close(fd);
3972
3973		/* first three bytes should match, a jmp short should be in there */
3974		if (memcmp(boot, bootSect, 3))
3975		return 0;
3976
3977		if (boot[1] == JMP_SHORT_OPCODE) {
3978		offset = boot[2] + 2;
3979		} else if (boot[1] == 0xe8 || boot[1] == 0xe9) {
3980		offset = (boot[3] << 8) + boot[2] + 2;
3981		} else if (boot[0] == JMP_SHORT_OPCODE) {
3982		offset = boot[1] + 2;
3983		/*
3984		* it looks like grub, when copying stage1 into the mbr,
3985		* patches stage1 right after the JMP location, replacing
3986		* other instructions such as JMPs for NOOPs. So, relax the
3987		* check a little bit by skipping those different bytes.
3988		*/
3989		if ((bootSect[offset + 1] == NOOP_OPCODE)
3990		&& (bootSect[offset + 2] == NOOP_OPCODE)) {
3991		offset = offset + 3;
3992		}
3993		} else if (boot[0] == 0xe8 || boot[0] == 0xe9) {
3994		offset = (boot[2] << 8) + boot[1] + 2;
3995		} else {
3996		return 0;
3997		}
3998
3999		if (memcmp(boot + offset, bootSect + offset, CODE_SEG_SIZE))
4000		return 0;
4001
4002		return 2;
4003		}
4004
4005		int checkLiloOnRaid(char *mdDev, const unsigned char *boot)
4006		{
4007		int fd;
4008		char buf[65536];
4009		char *end;
4010		char *chptr;
4011		char *chptr2;
4012		int rc;
4013
4014		/* it's on raid; we need to parse /proc/mdstat and check all of the
4015		*raw* devices listed in there */
4016
4017		if (!strncmp(mdDev, "/dev/", 5))
4018		mdDev += 5;
4019
4020		if ((fd = open("/proc/mdstat", O_RDONLY)) < 0) {
4021		fprintf(stderr, _("grubby: failed to open /proc/mdstat: %s\n"),
4022		strerror(errno));
4023		return 2;
4024		}
4025
4026		rc = read(fd, buf, sizeof(buf) - 1);
4027		if (rc < 0 || rc == (sizeof(buf) - 1)) {
4028		fprintf(stderr, _("grubby: failed to read /proc/mdstat: %s\n"),
4029		strerror(errno));
4030		close(fd);
4031		return 2;
4032		}
4033		close(fd);
4034		buf[rc] = '\0';
4035
4036		chptr = buf;
4037		while (*chptr) {
4038		end = strchr(chptr, '\n');
4039		if (!end)
4040		break;
4041		*end = '\0';
4042
4043		if (!strncmp(chptr, mdDev, strlen(mdDev)) &&
4044		chptr[strlen(mdDev)] == ' ') {
4045
4046		/* found the device */
4047		while (*chptr && *chptr != ':')
4048		chptr++;
4049		chptr++;
4050		while (*chptr && isspace(*chptr))
4051		chptr++;
4052
4053		/* skip the "active" bit */
4054		while (*chptr && !isspace(*chptr))
4055		chptr++;
4056		while (*chptr && isspace(*chptr))
4057		chptr++;
4058
4059		/* skip the raid level */
4060		while (*chptr && !isspace(*chptr))
4061		chptr++;
4062		while (*chptr && isspace(*chptr))
4063		chptr++;
4064
4065		/* everything else is partition stuff */
4066		while (*chptr) {
4067		chptr2 = chptr;
4068		while (*chptr2 && *chptr2 != '[')
4069		chptr2++;
4070		if (!*chptr2)
4071		break;
4072
4073		/* yank off the numbers at the end */
4074		chptr2--;
4075		while (isdigit(*chptr2) && chptr2 > chptr)
4076		chptr2--;
4077		chptr2++;
4078		*chptr2 = '\0';
4079
4080		/* Better, now we need the /dev/ back. We're
4081		* done with everything before this point, so
4082		* we can just put the /dev/ part there.
4083		* There will always be room. */
4084		memcpy(chptr - 5, "/dev/", 5);
4085		rc = checkDeviceBootloader(chptr - 5, boot);
4086		if (rc != 2) {
4087		return rc;
4088		}
4089
4090		chptr = chptr2 + 1;
4091		/* skip the [11] bit */
4092		while (*chptr && !isspace(*chptr))
4093		chptr++;
4094		/* and move to the next one */
4095		while (*chptr && isspace(*chptr))
4096		chptr++;
4097		}
4098
4099		/*  we're good to go */
4100		return 2;
4101		}
4102
4103		chptr = end + 1;
4104		}
4105
4106		fprintf(stderr,
4107		_("grubby: raid device /dev/%s not found in /proc/mdstat\n"),
4108		mdDev);
4109		return 0;
4110		}
4111
4112		int checkForLilo(struct grubConfig *config)
4113		{
4114		int fd;
4115		unsigned char boot[512];
4116		struct singleLine *line;
4117
4118		for (line = config->theLines; line; line = line->next)
4119		if (line->type == LT_BOOT)
4120		break;
4121
4122		if (!line) {
4123		fprintf(stderr,
4124		_
4125		("grubby: no boot line found in lilo configuration\n"));
4126		return 1;
4127		}
4128
4129		if (line->numElements != 2)
4130		return 1;
4131
4132		fd = open("/boot/boot.b", O_RDONLY);
4133		if (fd < 0) {
4134		fprintf(stderr, _("grubby: unable to open %s: %s\n"),
4135		"/boot/boot.b", strerror(errno));
4136		return 1;
4137		}
4138
4139		if (read(fd, boot, 512) != 512) {
4140		fprintf(stderr, _("grubby: unable to read %s: %s\n"),
4141		"/boot/boot.b", strerror(errno));
4142		return 1;
4143		}
4144		close(fd);
4145
4146		if (!strncmp("/dev/md", line->elements[1].item, 7))
4147		return checkLiloOnRaid(line->elements[1].item, boot);
4148
4149		return checkDeviceBootloader(line->elements[1].item, boot);
4150		}
4151
4152		int checkForGrub2(struct grubConfig *config)
4153		{
4154		if (!access("/etc/grub.d/", R_OK))
4155		return 2;
4156
4157		return 1;
4158		}
4159
4160		int checkForGrub(struct grubConfig *config)
4161		{
4162		int fd;
4163		unsigned char bootSect[512];
4164		char *boot;
4165		int onSuse = isSuseSystem();
4166
4167		if (onSuse) {
4168		if (parseSuseGrubConf(NULL, &boot))
4169		return 0;
4170		} else {
4171		if (parseSysconfigGrub(NULL, &boot))
4172		return 0;
4173		}
4174
4175		/* assume grub is not installed -- not an error condition */
4176		if (!boot)
4177		return 0;
4178
4179		fd = open("/boot/grub/stage1", O_RDONLY);
4180		if (fd < 0)
4181		/* this doesn't exist if grub hasn't been installed */
4182		return 0;
4183
4184		if (read(fd, bootSect, 512) != 512) {
4185		fprintf(stderr, _("grubby: unable to read %s: %s\n"),
4186		"/boot/grub/stage1", strerror(errno));
4187		close(fd);
4188		return 1;
4189		}
4190		close(fd);
4191
4192		/* The more elaborate checks do not work on SuSE. The checks done
4193		* seem to be reasonble (at least for now), so just return success
4194		*/
4195		if (onSuse)
4196		return 2;
4197
4198		return checkDeviceBootloader(boot, bootSect);
4199		}
4200
4201		int checkForExtLinux(struct grubConfig *config)
4202		{
4203		int fd;
4204		unsigned char bootSect[512];
4205		char *boot;
4206		char executable[] = "/boot/extlinux/extlinux";
4207
4208		printf("entered: checkForExtLinux()\n");
4209
4210		if (parseSysconfigGrub(NULL, &boot))
4211		return 0;
4212
4213		/* assume grub is not installed -- not an error condition */
4214		if (!boot)
4215		return 0;
4216
4217		fd = open(executable, O_RDONLY);
4218		if (fd < 0)
4219		/* this doesn't exist if grub hasn't been installed */
4220		return 0;
4221
4222		if (read(fd, bootSect, 512) != 512) {
4223		fprintf(stderr, _("grubby: unable to read %s: %s\n"),
4224		executable, strerror(errno));
4225		return 1;
4226		}
4227		close(fd);
4228
4229		return checkDeviceBootloader(boot, bootSect);
4230		}
4231
4232		int checkForYaboot(struct grubConfig *config)
4233		{
4234		/*
4235		* This is a simplistic check that we consider good enough for own puporses
4236		*
4237		* If we were to properly check if yaboot is *installed* we'd need to:
4238		* 1) get the system boot device (LT_BOOT)
4239		* 2) considering it's a raw filesystem, check if the yaboot binary matches
4240		*    the content on the boot device
4241		* 3) if not, copy the binary to a temporary file and run "addnote" on it
4242		* 4) check again if binary and boot device contents match
4243		*/
4244		if (!access("/etc/yaboot.conf", R_OK))
4245		return 2;
4246
4247		return 1;
4248		}
4249
4250		int checkForElilo(struct grubConfig *config)
4251		{
4252		if (!access("/etc/elilo.conf", R_OK))
4253		return 2;
4254
4255		return 1;
4256		}
4257
4258		static char *getRootSpecifier(char *str)
4259		{
4260		char *idx, *rootspec = NULL;
4261
4262		if (*str == '(') {
4263		idx = rootspec = strdup(str);
4264		while (*idx && (*idx != ')') && (!isspace(*idx)))
4265		idx++;
4266		*(++idx) = '\0';
4267		}
4268		return rootspec;
4269		}
4270
4271		static char *getInitrdVal(struct grubConfig *config,
4272		const char *prefix, struct singleLine *tmplLine,
4273		const char *newKernelInitrd,
4274		const char **extraInitrds, int extraInitrdCount)
4275		{
4276		char *initrdVal, *end;
4277		int i;
4278		size_t totalSize;
4279		size_t prefixLen;
4280		char separatorChar;
4281
4282		prefixLen = strlen(prefix);
4283		totalSize = strlen(newKernelInitrd) - prefixLen + 1 /* \0 */ ;
4284
4285		for (i = 0; i < extraInitrdCount; i++) {
4286		totalSize += sizeof(separatorChar);
4287		totalSize += strlen(extraInitrds[i]) - prefixLen;
4288		}
4289
4290		initrdVal = end = malloc(totalSize);
4291
4292		end = stpcpy(end, newKernelInitrd + prefixLen);
4293
4294		separatorChar = getKeywordByType(LT_INITRD, config->cfi)->separatorChar;
4295		for (i = 0; i < extraInitrdCount; i++) {
4296		const char *extraInitrd;
4297		int j;
4298
4299		extraInitrd = extraInitrds[i] + prefixLen;
4300		/* Don't add entries that are already there */
4301		if (tmplLine != NULL) {
4302		for (j = 2; j < tmplLine->numElements; j++)
4303		if (strcmp
4304		(extraInitrd,
4305		tmplLine->elements[j].item) == 0)
4306		break;
4307
4308		if (j != tmplLine->numElements)
4309		continue;
4310		}
4311
4312		*end++ = separatorChar;
4313		end = stpcpy(end, extraInitrd);
4314		}
4315
4316		return initrdVal;
4317		}
4318
4319		int addNewKernel(struct grubConfig *config, struct singleEntry *template,
4320		const char *prefix,
4321		const char *newKernelPath, const char *newKernelTitle,
4322		const char *newKernelArgs, const char *newKernelInitrd,
4323		const char **extraInitrds, int extraInitrdCount,
4324		const char *newMBKernel, const char *newMBKernelArgs,
4325		const char *newDevTreePath, int newIndex)
4326		{
4327		struct singleEntry *new, *entry, *prev = NULL;
4328		struct singleLine *newLine = NULL, *tmplLine = NULL, *masterLine = NULL;
4329		int needs;
4330		char *indexs;
4331		char *chptr;
4332		int rc;
4333
4334		if (!newKernelPath)
4335		return 0;
4336
4337		rc = asprintf(&indexs, "%d", newIndex);
4338		if (rc < 0)
4339		return 1;
4340
4341		/* if the newKernelTitle is too long silently munge it into something
4342		* we can live with. truncating is first check, then we'll just mess with
4343		* it until it looks better */
4344		if (config->cfi->maxTitleLength &&
4345		(strlen(newKernelTitle) > config->cfi->maxTitleLength)) {
4346		char *buf = alloca(config->cfi->maxTitleLength + 7);
4347		char *numBuf = alloca(config->cfi->maxTitleLength + 1);
4348		int i = 1;
4349
4350		sprintf(buf, "TITLE=%.*s", config->cfi->maxTitleLength,
4351		newKernelTitle);
4352		while (findEntryByPath(config, buf, NULL, NULL)) {
4353		sprintf(numBuf, "%d", i++);
4354		strcpy(buf + strlen(buf) - strlen(numBuf), numBuf);
4355		}
4356
4357		newKernelTitle = buf + 6;
4358		}
4359
4360		new = malloc(sizeof(*new));
4361		new->skip = 0;
4362		new->multiboot = 0;
4363		new->lines = NULL;
4364		entry = config->entries;
4365		for (unsigned int i = 0; i < newIndex; i++) {
4366		if (!entry)
4367		break;
4368		prev = entry;
4369		entry = entry->next;
4370		}
4371		new->next = entry;
4372
4373		if (prev)
4374		prev->next = new;
4375		else
4376		config->entries = new;
4377
4378		/* copy/update from the template */
4379		needs = NEED_KERNEL | NEED_TITLE;
4380		if (newKernelInitrd)
4381		needs |= NEED_INITRD;
4382		if (newMBKernel) {
4383		needs |= NEED_MB;
4384		new->multiboot = 1;
4385		}
4386		if (newDevTreePath && getKeywordByType(LT_DEVTREE, config->cfi))
4387		needs |= NEED_DEVTREE;
4388
4389		if (template) {
4390		for (masterLine = template->lines;
4391		masterLine && (tmplLine = lineDup(masterLine));
4392		lineFree(tmplLine), masterLine = masterLine->next) {
4393		dbgPrintf("addNewKernel processing %d\n",
4394		tmplLine->type);
4395
4396		/* skip comments */
4397		chptr = tmplLine->indent;
4398		while (*chptr && isspace(*chptr))
4399		chptr++;
4400		if (*chptr == '#')
4401		continue;
4402
4403		if (iskernel(tmplLine->type)
4404		&& tmplLine->numElements >= 2) {
4405		if (!template->multiboot && (needs & NEED_MB)) {
4406		/* it's not a multiboot template and
4407		* this is the kernel line.  Try to
4408		* be intelligent about inserting the
4409		* hypervisor at the same time.
4410		*/
4411		if (config->cfi->mbHyperFirst) {
4412		/* insert the hypervisor first */
4413		newLine =
4414		addLine(new, config->cfi,
4415		LT_HYPER,
4416		tmplLine->indent,
4417		newMBKernel +
4418		strlen(prefix));
4419		/* set up for adding the
4420		* kernel line */
4421		free(tmplLine->indent);
4422		tmplLine->indent =
4423		strdup(config->
4424		secondaryIndent);
4425		needs &= ~NEED_MB;
4426		}
4427		if (needs & NEED_KERNEL) {
4428		/* use addLineTmpl to
4429		* preserve line elements,
4430		* otherwise we could just
4431		* call addLine.
4432		* Unfortunately this means
4433		* making some changes to the
4434		* template such as the
4435		* indent change above and
4436		* the type change below.
4437		*/
4438		struct keywordTypes *mbm_kw =
4439		getKeywordByType
4440		(LT_MBMODULE, config->cfi);
4441		if (mbm_kw) {
4442		tmplLine->type =
4443		LT_MBMODULE;
4444		free(tmplLine->
4445		elements[0].item);
4446		tmplLine->elements[0].
4447		item =
4448		strdup(mbm_kw->key);
4449		}
4450		newLine =
4451		addLineTmpl(new, tmplLine,
4452		newLine,
4453		newKernelPath +
4454		strlen(prefix),
4455		config->cfi);
4456		needs &= ~NEED_KERNEL;
4457		}
4458		if (needs & NEED_MB) { /* !mbHyperFirst */
4459		newLine =
4460		addLine(new, config->cfi,
4461		LT_HYPER,
4462		config->
4463		secondaryIndent,
4464		newMBKernel +
4465		strlen(prefix));
4466		needs &= ~NEED_MB;
4467		}
4468		} else if (needs & NEED_KERNEL) {
4469		newLine =
4470		addLineTmpl(new, tmplLine, newLine,
4471		newKernelPath +
4472		strlen(prefix),
4473		config->cfi);
4474		needs &= ~NEED_KERNEL;
4475		}
4476
4477		} else if (tmplLine->type == LT_HYPER &&
4478		tmplLine->numElements >= 2) {
4479		if (needs & NEED_MB) {
4480		newLine =
4481		addLineTmpl(new, tmplLine, newLine,
4482		newMBKernel +
4483		strlen(prefix),
4484		config->cfi);
4485		needs &= ~NEED_MB;
4486		}
4487
4488		} else if (tmplLine->type == LT_MBMODULE &&
4489		tmplLine->numElements >= 2) {
4490		if (new->multiboot) {
4491		if (needs & NEED_KERNEL) {
4492		newLine =
4493		addLineTmpl(new, tmplLine,
4494		newLine,
4495		newKernelPath +
4496		strlen(prefix),
4497		config->cfi);
4498		needs &= ~NEED_KERNEL;
4499		} else if (config->cfi->mbInitRdIsModule
4500		&& (needs & NEED_INITRD)) {
4501		char *initrdVal;
4502		initrdVal =
4503		getInitrdVal(config, prefix,
4504		tmplLine,
4505		newKernelInitrd,
4506		extraInitrds,
4507		extraInitrdCount);
4508		newLine =
4509		addLineTmpl(new, tmplLine,
4510		newLine,
4511		initrdVal,
4512		config->cfi);
4513		free(initrdVal);
4514		needs &= ~NEED_INITRD;
4515		}
4516		} else if (needs & NEED_KERNEL) {
4517		/* template is multi but new is not,
4518		* insert the kernel in the first
4519		* module slot
4520		*/
4521		tmplLine->type =
4522		preferredLineType(LT_KERNEL,
4523		config->cfi);
4524		free(tmplLine->elements[0].item);
4525		tmplLine->elements[0].item =
4526		strdup(getKeywordByType
4527		(tmplLine->type,
4528		config->cfi)->key);
4529		newLine =
4530		addLineTmpl(new, tmplLine, newLine,
4531		newKernelPath +
4532		strlen(prefix),
4533		config->cfi);
4534		needs &= ~NEED_KERNEL;
4535		} else if (needs & NEED_INITRD) {
4536		char *initrdVal;
4537		/* template is multi but new is not,
4538		* insert the initrd in the second
4539		* module slot
4540		*/
4541		tmplLine->type =
4542		preferredLineType(LT_INITRD,
4543		config->cfi);
4544		free(tmplLine->elements[0].item);
4545		tmplLine->elements[0].item =
4546		strdup(getKeywordByType
4547		(tmplLine->type,
4548		config->cfi)->key);
4549		initrdVal =
4550		getInitrdVal(config, prefix,
4551		tmplLine,
4552		newKernelInitrd,
4553		extraInitrds,
4554		extraInitrdCount);
4555		newLine =
4556		addLineTmpl(new, tmplLine, newLine,
4557		initrdVal, config->cfi);
4558		free(initrdVal);
4559		needs &= ~NEED_INITRD;
4560		}
4561
4562		} else if (isinitrd(tmplLine->type)
4563		&& tmplLine->numElements >= 2) {
4564		if (needs & NEED_INITRD && new->multiboot
4565		&& !template->multiboot
4566		&& config->cfi->mbInitRdIsModule) {
4567		/* make sure we don't insert the
4568		* module initrd before the module
4569		* kernel... if we don't do it here,
4570		* it will be inserted following the
4571		* template.
4572		*/
4573		if (!needs & NEED_KERNEL) {
4574		char *initrdVal;
4575
4576		initrdVal =
4577		getInitrdVal(config, prefix,
4578		tmplLine,
4579		newKernelInitrd,
4580		extraInitrds,
4581		extraInitrdCount);
4582		newLine =
4583		addLine(new, config->cfi,
4584		LT_MBMODULE,
4585		config->
4586		secondaryIndent,
4587		initrdVal);
4588		free(initrdVal);
4589		needs &= ~NEED_INITRD;
4590		}
4591		} else if (needs & NEED_INITRD) {
4592		char *initrdVal;
4593		initrdVal =
4594		getInitrdVal(config, prefix,
4595		tmplLine,
4596		newKernelInitrd,
4597		extraInitrds,
4598		extraInitrdCount);
4599		newLine =
4600		addLineTmpl(new, tmplLine, newLine,
4601		initrdVal, config->cfi);
4602		free(initrdVal);
4603		needs &= ~NEED_INITRD;
4604		}
4605
4606		} else if (tmplLine->type == LT_MENUENTRY &&
4607		(needs & NEED_TITLE)) {
4608		requote(tmplLine, config->cfi);
4609		char *nkt = malloc(strlen(newKernelTitle) + 3);
4610		strcpy(nkt, "'");
4611		strcat(nkt, newKernelTitle);
4612		strcat(nkt, "'");
4613		newLine =
4614		addLineTmpl(new, tmplLine, newLine, nkt,
4615		config->cfi);
4616		free(nkt);
4617		needs &= ~NEED_TITLE;
4618		} else if (tmplLine->type == LT_TITLE &&
4619		(needs & NEED_TITLE)) {
4620		if (tmplLine->numElements >= 2) {
4621		newLine =
4622		addLineTmpl(new, tmplLine, newLine,
4623		newKernelTitle,
4624		config->cfi);
4625		needs &= ~NEED_TITLE;
4626		} else if (tmplLine->numElements == 1 &&
4627		config->cfi->titleBracketed) {
4628		/* addLineTmpl doesn't handle
4629		* titleBracketed */
4630		newLine =
4631		addLine(new, config->cfi, LT_TITLE,
4632		tmplLine->indent,
4633		newKernelTitle);
4634		needs &= ~NEED_TITLE;
4635		}
4636		} else if (tmplLine->type == LT_ECHO) {
4637		requote(tmplLine, config->cfi);
4638		static const char *prefix = "'Loading ";
4639		if (tmplLine->numElements > 1 &&
4640		strstr(tmplLine->elements[1].item, prefix)
4641		&& masterLine->next
4642		&& iskernel(masterLine->next->type)) {
4643		char *newTitle =
4644		malloc(strlen(prefix) +
4645		strlen(newKernelTitle) + 2);
4646
4647		strcpy(newTitle, prefix);
4648		strcat(newTitle, newKernelTitle);
4649		strcat(newTitle, "'");
4650		newLine =
4651		addLine(new, config->cfi, LT_ECHO,
4652		tmplLine->indent, newTitle);
4653		free(newTitle);
4654		} else {
4655		/* pass through other lines from the
4656		* template */
4657		newLine =
4658		addLineTmpl(new, tmplLine, newLine,
4659		NULL, config->cfi);
4660		}
4661		} else if (tmplLine->type == LT_DEVTREE &&
4662		tmplLine->numElements == 2
4663		&& newDevTreePath) {
4664		newLine =
4665		addLineTmpl(new, tmplLine, newLine,
4666		newDevTreePath + strlen(prefix),
4667		config->cfi);
4668		needs &= ~NEED_DEVTREE;
4669		} else if (tmplLine->type == LT_ENTRY_END
4670		&& needs & NEED_DEVTREE) {
4671		const char *ndtp = newDevTreePath;
4672		if (!strncmp
4673		(newDevTreePath, prefix, strlen(prefix)))
4674		ndtp += strlen(prefix);
4675		newLine = addLine(new, config->cfi, LT_DEVTREE,
4676		config->secondaryIndent,
4677		ndtp);
4678		needs &= ~NEED_DEVTREE;
4679		newLine =
4680		addLineTmpl(new, tmplLine, newLine, NULL,
4681		config->cfi);
4682		} else {
4683		/* pass through other lines from the template */
4684		newLine =
4685		addLineTmpl(new, tmplLine, newLine, NULL,
4686		config->cfi);
4687		}
4688		}
4689
4690		} else {
4691		/* don't have a template, so start the entry with the
4692		* appropriate starting line
4693		*/
4694		switch (config->cfi->entryStart) {
4695		case LT_KERNEL:
4696		case LT_KERNEL_EFI:
4697		case LT_KERNEL_16:
4698		if (new->multiboot && config->cfi->mbHyperFirst) {
4699		/* fall through to LT_HYPER */
4700		} else {
4701		newLine = addLine(new, config->cfi,
4702		preferredLineType(LT_KERNEL,
4703		config->
4704		cfi),
4705		config->primaryIndent,
4706		newKernelPath +
4707		strlen(prefix));
4708		needs &= ~NEED_KERNEL;
4709		break;
4710		}
4711
4712		case LT_HYPER:
4713		newLine = addLine(new, config->cfi, LT_HYPER,
4714		config->primaryIndent,
4715		newMBKernel + strlen(prefix));
4716		needs &= ~NEED_MB;
4717		break;
4718
4719		case LT_MENUENTRY:{
4720		char *nkt = malloc(strlen(newKernelTitle) + 3);
4721		strcpy(nkt, "'");
4722		strcat(nkt, newKernelTitle);
4723		strcat(nkt, "'");
4724		newLine =
4725		addLine(new, config->cfi, LT_MENUENTRY,
4726		config->primaryIndent, nkt);
4727		free(nkt);
4728		needs &= ~NEED_TITLE;
4729		needs |= NEED_END;
4730		break;
4731		}
4732		case LT_TITLE:
4733		if (useextlinuxmenu != 0) { // We just need useextlinuxmenu to not be zero (set above)
4734		char *templabel;
4735		int x = 0, y = 0;
4736
4737		templabel = strdup(newKernelTitle);
4738		while (templabel[x]) {
4739		if (templabel[x] == ' ') {
4740		y = x;
4741		while (templabel[y]) {
4742		templabel[y] =
4743		templabel[y + 1];
4744		y++;
4745		}
4746		}
4747		x++;
4748		}
4749		newLine = addLine(new, config->cfi, LT_TITLE,
4750		config->primaryIndent,
4751		templabel);
4752		free(templabel);
4753		} else {
4754		newLine = addLine(new, config->cfi, LT_TITLE,
4755		config->primaryIndent,
4756		newKernelTitle);
4757		}
4758		needs &= ~NEED_TITLE;
4759		break;
4760
4761		default:
4762		abort();
4763		}
4764		}
4765
4766		struct singleLine *endLine = NULL;
4767		endLine = getLineByType(LT_ENTRY_END, new->lines);
4768		if (endLine) {
4769		removeLine(new, endLine);
4770		needs |= NEED_END;
4771		}
4772
4773		/* add the remainder of the lines, i.e. those that either
4774		* weren't present in the template, or in the case of no template,
4775		* all the lines following the entryStart.
4776		*/
4777		if (needs & NEED_TITLE) {
4778		newLine = addLine(new, config->cfi, LT_TITLE,
4779		config->secondaryIndent, newKernelTitle);
4780		needs &= ~NEED_TITLE;
4781		}
4782		if ((needs & NEED_MB) && config->cfi->mbHyperFirst) {
4783		newLine = addLine(new, config->cfi, LT_HYPER,
4784		config->secondaryIndent,
4785		newMBKernel + strlen(prefix));
4786		needs &= ~NEED_MB;
4787		}
4788		if (needs & NEED_KERNEL) {
4789		newLine = addLine(new, config->cfi,
4790		(new->multiboot
4791		&& getKeywordByType(LT_MBMODULE,
4792		config->cfi))
4793		? LT_MBMODULE : preferredLineType(LT_KERNEL,
4794		config->
4795		cfi),
4796		config->secondaryIndent,
4797		newKernelPath + strlen(prefix));
4798		needs &= ~NEED_KERNEL;
4799		}
4800		if (needs & NEED_MB) {
4801		newLine = addLine(new, config->cfi, LT_HYPER,
4802		config->secondaryIndent,
4803		newMBKernel + strlen(prefix));
4804		needs &= ~NEED_MB;
4805		}
4806		if (needs & NEED_INITRD) {
4807		char *initrdVal;
4808		initrdVal =
4809		getInitrdVal(config, prefix, NULL, newKernelInitrd,
4810		extraInitrds, extraInitrdCount);
4811		newLine =
4812		addLine(new, config->cfi,
4813		(new->multiboot
4814		&& getKeywordByType(LT_MBMODULE, config->cfi))
4815		? LT_MBMODULE : preferredLineType(LT_INITRD,
4816		config->cfi),
4817		config->secondaryIndent, initrdVal);
4818		free(initrdVal);
4819		needs &= ~NEED_INITRD;
4820		}
4821		if (needs & NEED_DEVTREE) {
4822		newLine = addLine(new, config->cfi, LT_DEVTREE,
4823		config->secondaryIndent, newDevTreePath);
4824		needs &= ~NEED_DEVTREE;
4825		}
4826
4827		/* NEEDS_END must be last on bootloaders that need it... */
4828		if (needs & NEED_END) {
4829		newLine = addLine(new, config->cfi, LT_ENTRY_END,
4830		config->secondaryIndent, NULL);
4831		needs &= ~NEED_END;
4832		}
4833
4834		if (needs) {
4835		printf(_("grubby: needs=%d, aborting\n"), needs);
4836		abort();
4837		}
4838
4839		if (updateImage(config, indexs, prefix, newKernelArgs, NULL,
4840		newMBKernelArgs, NULL)) {
4841		config->isModified = 1;
4842		return 1;
4843		}
4844
4845		return 0;
4846		}
4847
4848		int main(int argc, const char **argv)
4849		{
4850		poptContext optCon;
4851		const char *grubConfig = NULL;
4852		char *outputFile = NULL;
4853		int arg = 0;
4854		int flags = 0;
4855		int badImageOkay = 0;
4856		int configureGrub2 = 0;
4857		int configureLilo = 0, configureELilo = 0, configureGrub = 0;
4858		int configureYaboot = 0, configureSilo = 0, configureZipl = 0;
4859		int configureExtLinux = 0;
4860		int bootloaderProbe = 0;
4861		int extraInitrdCount = 0;
4862		char *updateKernelPath = NULL;
4863		char *newKernelPath = NULL;
4864		char *removeKernelPath = NULL;
4865		char *newKernelArgs = NULL;
4866		char *newKernelInitrd = NULL;
4867		char *newKernelTitle = NULL;
4868		char *newDevTreePath = NULL;
4869		char *newMBKernel = NULL;
4870		char *newMBKernelArgs = NULL;
4871		int newIndex = 0;
4872		char *removeMBKernelArgs = NULL;
4873		char *removeMBKernel = NULL;
4874		char *bootPrefix = NULL;
4875		char *defaultKernel = NULL;
4876		char *removeArgs = NULL;
4877		char *kernelInfo = NULL;
4878		char *extraInitrds[MAX_EXTRA_INITRDS] = { NULL };
4879		char *envPath = NULL;
4880		const char *chptr = NULL;
4881		struct configFileInfo *cfi = NULL;
4882		struct grubConfig *config;
4883		struct singleEntry *template = NULL;
4884		int copyDefault = 0, makeDefault = 0;
4885		int displayDefault = 0;
4886		int displayDefaultIndex = 0;
4887		int displayDefaultTitle = 0;
4888		int defaultIndex = -1;
4889		struct poptOption options[] = {
4890		{"add-kernel", 0, POPT_ARG_STRING, &newKernelPath, 0,
4891		_("add an entry for the specified kernel"), _("kernel-path")},
4892		{"add-multiboot", 0, POPT_ARG_STRING, &newMBKernel, 0,
4893		_("add an entry for the specified multiboot kernel"), NULL},
4894		{"args", 0, POPT_ARG_STRING, &newKernelArgs, 0,
4895		_("default arguments for the new kernel or new arguments for "
4896		"kernel being updated"), _("args")},
4897		{"mbargs", 0, POPT_ARG_STRING, &newMBKernelArgs, 0,
4898		_("default arguments for the new multiboot kernel or "
4899		"new arguments for multiboot kernel being updated"), NULL},
4900		{"bad-image-okay", 0, 0, &badImageOkay, 0,
4901		_
4902		("don't sanity check images in boot entries (for testing only)"),
4903		NULL},
4904		{"boot-filesystem", 0, POPT_ARG_STRING, &bootPrefix, 0,
4905		_
4906		("filesystem which contains /boot directory (for testing only)"),
4907		_("bootfs")},
4908		#if defined(__i386__) || defined(__x86_64__) || defined (__powerpc64__) || defined (__ia64__)
4909		{"bootloader-probe", 0, POPT_ARG_NONE, &bootloaderProbe, 0,
4910		_("check which bootloader is installed on boot sector")},
4911		#endif
4912		{"config-file", 'c', POPT_ARG_STRING, &grubConfig, 0,
4913		_("path to grub config file to update (\"-\" for stdin)"),
4914		_("path")},
4915		{"copy-default", 0, 0, &copyDefault, 0,
4916		_("use the default boot entry as a template for the new entry "
4917		"being added; if the default is not a linux image, or if "
4918		"the kernel referenced by the default image does not exist, "
4919		"the first linux entry whose kernel does exist is used as the "
4920		"template"), NULL},
4921		{"debug", 0, 0, &debug, 0,
4922		_("print debugging information for failures")},
4923		{"default-kernel", 0, 0, &displayDefault, 0,
4924		_("display the path of the default kernel")},
4925		{"default-index", 0, 0, &displayDefaultIndex, 0,
4926		_("display the index of the default kernel")},
4927		{"default-title", 0, 0, &displayDefaultTitle, 0,
4928		_("display the title of the default kernel")},
4929		{"devtree", 0, POPT_ARG_STRING, &newDevTreePath, 0,
4930		_("device tree file for new stanza"), _("dtb-path")},
4931		{"devtreedir", 0, POPT_ARG_STRING, &newDevTreePath, 0,
4932		_("device tree directory for new stanza"), _("dtb-path")},
4933		{"elilo", 0, POPT_ARG_NONE, &configureELilo, 0,
4934		_("configure elilo bootloader")},
4935		{"efi", 0, POPT_ARG_NONE, &isEfi, 0,
4936		_("force grub2 stanzas to use efi")},
4937		{"env", 0, POPT_ARG_STRING, &envPath, 0,
4938		_("path for environment data"),
4939		_("path")},
4940		{"extlinux", 0, POPT_ARG_NONE, &configureExtLinux, 0,
4941		_("configure extlinux bootloader (from syslinux)")},
4942		{"grub", 0, POPT_ARG_NONE, &configureGrub, 0,
4943		_("configure grub bootloader")},
4944		{"grub2", 0, POPT_ARG_NONE, &configureGrub2, 0,
4945		_("configure grub2 bootloader")},
4946		{"info", 0, POPT_ARG_STRING, &kernelInfo, 0,
4947		_("display boot information for specified kernel"),
4948		_("kernel-path")},
4949		{"initrd", 0, POPT_ARG_STRING, &newKernelInitrd, 0,
4950		_("initrd image for the new kernel"), _("initrd-path")},
4951		{"extra-initrd", 'i', POPT_ARG_STRING, NULL, 'i',
4952		_
4953		("auxiliary initrd image for things other than the new kernel"),
4954		_("initrd-path")},
4955		{"lilo", 0, POPT_ARG_NONE, &configureLilo, 0,
4956		_("configure lilo bootloader")},
4957		{"make-default", 0, 0, &makeDefault, 0,
4958		_("make the newly added entry the default boot entry"), NULL},
4959		{"output-file", 'o', POPT_ARG_STRING, &outputFile, 0,
4960		_("path to output updated config file (\"-\" for stdout)"),
4961		_("path")},
4962		{"remove-args", 0, POPT_ARG_STRING, &removeArgs, 0,
4963		_("remove kernel arguments"), NULL},
4964		{"remove-mbargs", 0, POPT_ARG_STRING, &removeMBKernelArgs, 0,
4965		_("remove multiboot kernel arguments"), NULL},
4966		{"remove-kernel", 0, POPT_ARG_STRING, &removeKernelPath, 0,
4967		_("remove all entries for the specified kernel"),
4968		_("kernel-path")},
4969		{"remove-multiboot", 0, POPT_ARG_STRING, &removeMBKernel, 0,
4970		_("remove all entries for the specified multiboot kernel"),
4971		NULL},
4972		{"set-default", 0, POPT_ARG_STRING, &defaultKernel, 0,
4973		_("make the first entry referencing the specified kernel "
4974		"the default"), _("kernel-path")},
4975		{"set-default-index", 0, POPT_ARG_INT, &defaultIndex, 0,
4976		_("make the given entry index the default entry"),
4977		_("entry-index")},
4978		{"set-index", 0, POPT_ARG_INT, &newIndex, 0,
4979		_("use the given index when creating a new entry"),
4980		_("entry-index")},
4981		{"silo", 0, POPT_ARG_NONE, &configureSilo, 0,
4982		_("configure silo bootloader")},
4983		{"title", 0, POPT_ARG_STRING, &newKernelTitle, 0,
4984		_("title to use for the new kernel entry"), _("entry-title")},
4985		{"update-kernel", 0, POPT_ARG_STRING, &updateKernelPath, 0,
4986		_("updated information for the specified kernel"),
4987		_("kernel-path")},
4988		{"version", 'v', 0, NULL, 'v',
4989		_("print the version of this program and exit"), NULL},
4990		{"yaboot", 0, POPT_ARG_NONE, &configureYaboot, 0,
4991		_("configure yaboot bootloader")},
4992		{"zipl", 0, POPT_ARG_NONE, &configureZipl, 0,
4993		_("configure zipl bootloader")},
4994		POPT_AUTOHELP {0, 0, 0, 0, 0}
4995		};
4996
4997		useextlinuxmenu = 0;
4998
4999		int i = 0;
5000		for (int j = 1; j < argc; j++)
5001		i += strlen(argv[j]) + 1;
5002		saved_command_line = malloc(i);
5003		if (!saved_command_line) {
5004		fprintf(stderr, "grubby: %m\n");
5005		exit(1);
5006		}
5007		saved_command_line[0] = '\0';
5008		for (int j = 1; j < argc; j++) {
5009		strcat(saved_command_line, argv[j]);
5010		strncat(saved_command_line, j == argc - 1 ? "" : " ", 1);
5011		}
5012
5013		optCon = poptGetContext("grubby", argc, argv, options, 0);
5014		poptReadDefaultConfig(optCon, 1);
5015
5016		while ((arg = poptGetNextOpt(optCon)) >= 0) {
5017		switch (arg) {
5018		case 'v':
5019		printf("grubby version %s\n", VERSION);
5020		exit(0);
5021		break;
5022		case 'i':
5023		if (extraInitrdCount < MAX_EXTRA_INITRDS) {
5024		extraInitrds[extraInitrdCount++] =
5025		strdup(poptGetOptArg(optCon));
5026		} else {
5027		fprintf(stderr,
5028		_
5029		("grubby: extra initrd maximum is %d\n"),
5030		extraInitrdCount);
5031		return 1;
5032		}
5033		break;
5034		}
5035		}
5036
5037		if (arg < -1) {
5038		fprintf(stderr, _("grubby: bad argument %s: %s\n"),
5039		poptBadOption(optCon, POPT_BADOPTION_NOALIAS),
5040		poptStrerror(arg));
5041		return 1;
5042		}
5043
5044		if ((chptr = poptGetArg(optCon))) {
5045		fprintf(stderr, _("grubby: unexpected argument %s\n"), chptr);
5046		return 1;
5047		}
5048
5049		if ((configureLilo + configureGrub2 + configureGrub + configureELilo +
5050		configureYaboot + configureSilo + configureZipl +
5051		configureExtLinux) > 1) {
5052		fprintf(stderr,
5053		_("grubby: cannot specify multiple bootloaders\n"));
5054		return 1;
5055		} else if (bootloaderProbe && grubConfig) {
5056		fprintf(stderr,
5057		_
5058		("grubby: cannot specify config file with --bootloader-probe\n"));
5059		return 1;
5060		} else if (configureGrub2) {
5061		cfi = &grub2ConfigType;
5062		if (envPath)
5063		cfi->envFile = envPath;
5064		} else if (configureLilo) {
5065		cfi = &liloConfigType;
5066		} else if (configureGrub) {
5067		cfi = &grubConfigType;
5068		} else if (configureELilo) {
5069		cfi = &eliloConfigType;
5070		} else if (configureYaboot) {
5071		cfi = &yabootConfigType;
5072		} else if (configureSilo) {
5073		cfi = &siloConfigType;
5074		} else if (configureZipl) {
5075		cfi = &ziplConfigType;
5076		} else if (configureExtLinux) {
5077		cfi = &extlinuxConfigType;
5078		useextlinuxmenu = 1;
5079		}
5080
5081		if (!cfi) {
5082		if (grub2FindConfig(&grub2ConfigType)) {
5083		cfi = &grub2ConfigType;
5084		if (envPath)
5085		cfi->envFile = envPath;
5086		} else
5087		#ifdef __ia64__
5088		cfi = &eliloConfigType;
5089		#elif __powerpc__
5090		cfi = &yabootConfigType;
5091		#elif __sparc__
5092		cfi = &siloConfigType;
5093		#elif __s390__
5094		cfi = &ziplConfigType;
5095		#elif __s390x__
5096		cfi = &ziplConfigtype;
5097		#else
5098		cfi = &grubConfigType;
5099		#endif
5100		}
5101
5102		if (!grubConfig) {
5103		if (cfi->findConfig)
5104		grubConfig = cfi->findConfig(cfi);
5105		if (!grubConfig)
5106		grubConfig = cfi->defaultConfig;
5107		}
5108
5109		if (bootloaderProbe && (displayDefault || kernelInfo ||
5110		newKernelPath || removeKernelPath || makeDefault
5111		|| defaultKernel || displayDefaultIndex
5112		|| displayDefaultTitle
5113		|| (defaultIndex >= 0))) {
5114		fprintf(stderr,
5115		_("grubby: --bootloader-probe may not be used with "
5116		"specified option"));
5117		return 1;
5118		}
5119
5120		if ((displayDefault || kernelInfo) && (newKernelPath ||
5121		removeKernelPath)) {
5122		fprintf(stderr, _("grubby: --default-kernel and --info may not "
5123		"be used when adding or removing kernels\n"));
5124		return 1;
5125		}
5126
5127		if (newKernelPath && !newKernelTitle) {
5128		fprintf(stderr, _("grubby: kernel title must be specified\n"));
5129		return 1;
5130		} else if (!newKernelPath && (copyDefault ||
5131		(newKernelInitrd && !updateKernelPath) ||
5132		makeDefault || extraInitrdCount > 0)) {
5133		fprintf(stderr, _("grubby: kernel path expected\n"));
5134		return 1;
5135		}
5136
5137		if (newKernelPath && updateKernelPath) {
5138		fprintf(stderr, _("grubby: --add-kernel and --update-kernel may"
5139		"not be used together"));
5140		return 1;
5141		}
5142
5143		if (makeDefault && defaultKernel) {
5144		fprintf(stderr, _("grubby: --make-default and --default-kernel "
5145		"may not be used together\n"));
5146		return 1;
5147		} else if (defaultKernel && removeKernelPath &&
5148		!strcmp(defaultKernel, removeKernelPath)) {
5149		fprintf(stderr,
5150		_("grubby: cannot make removed kernel the default\n"));
5151		return 1;
5152		} else if (defaultKernel && newKernelPath &&
5153		!strcmp(defaultKernel, newKernelPath)) {
5154		makeDefault = 1;
5155		defaultKernel = NULL;
5156		} else if (defaultKernel && (defaultIndex >= 0)) {
5157		fprintf(stderr,
5158		_("grubby: --set-default and --set-default-index "
5159		"may not be used together\n"));
5160		return 1;
5161		}
5162
5163		if (grubConfig && !strcmp(grubConfig, "-") && !outputFile) {
5164		fprintf(stderr,
5165		_("grubby: output file must be specified if stdin "
5166		"is used\n"));
5167		return 1;
5168		}
5169
5170		if (!removeKernelPath && !newKernelPath && !displayDefault
5171		&& !defaultKernel && !kernelInfo && !bootloaderProbe
5172		&& !updateKernelPath && !removeMBKernel && !displayDefaultIndex
5173		&& !displayDefaultTitle && (defaultIndex == -1)) {
5174		fprintf(stderr, _("grubby: no action specified\n"));
5175		return 1;
5176		}
5177
5178		flags |= badImageOkay ? GRUBBY_BADIMAGE_OKAY : 0;
5179
5180		if (cfi->needsBootPrefix) {
5181		if (!bootPrefix) {
5182		bootPrefix = findBootPrefix();
5183		if (!bootPrefix)
5184		return 1;
5185		} else {
5186		/* this shouldn't end with a / */
5187		if (bootPrefix[strlen(bootPrefix) - 1] == '/')
5188		bootPrefix[strlen(bootPrefix) - 1] = '\0';
5189		}
5190		} else {
5191		bootPrefix = "";
5192		}
5193
5194		if (!cfi->mbAllowExtraInitRds && extraInitrdCount > 0) {
5195		fprintf(stderr,
5196		_("grubby: %s doesn't allow multiple initrds\n"),
5197		cfi->defaultConfig);
5198		return 1;
5199		}
5200
5201		if (bootloaderProbe) {
5202		int lrc = 0, grc = 0, gr2c = 0, extrc = 0, yrc = 0, erc = 0;
5203		struct grubConfig *lconfig, *gconfig, *yconfig, *econfig;
5204
5205		const char *grub2config = grub2FindConfig(&grub2ConfigType);
5206		if (grub2config) {
5207		gconfig = readConfig(grub2config, &grub2ConfigType);
5208		if (!gconfig)
5209		gr2c = 1;
5210		else
5211		gr2c = checkForGrub2(gconfig);
5212		}
5213
5214		const char *grubconfig = grubFindConfig(&grubConfigType);
5215		if (!access(grubconfig, F_OK)) {
5216		gconfig = readConfig(grubconfig, &grubConfigType);
5217		if (!gconfig)
5218		grc = 1;
5219		else
5220		grc = checkForGrub(gconfig);
5221		}
5222
5223		if (!access(liloConfigType.defaultConfig, F_OK)) {
5224		lconfig =
5225		readConfig(liloConfigType.defaultConfig,
5226		&liloConfigType);
5227		if (!lconfig)
5228		lrc = 1;
5229		else
5230		lrc = checkForLilo(lconfig);
5231		}
5232
5233		if (!access(eliloConfigType.defaultConfig, F_OK)) {
5234		econfig = readConfig(eliloConfigType.defaultConfig,
5235		&eliloConfigType);
5236		if (!econfig)
5237		erc = 1;
5238		else
5239		erc = checkForElilo(econfig);
5240		}
5241
5242		if (!access(extlinuxConfigType.defaultConfig, F_OK)) {
5243		lconfig =
5244		readConfig(extlinuxConfigType.defaultConfig,
5245		&extlinuxConfigType);
5246		if (!lconfig)
5247		extrc = 1;
5248		else
5249		extrc = checkForExtLinux(lconfig);
5250		}
5251
5252		if (!access(yabootConfigType.defaultConfig, F_OK)) {
5253		yconfig = readConfig(yabootConfigType.defaultConfig,
5254		&yabootConfigType);
5255		if (!yconfig)
5256		yrc = 1;
5257		else
5258		yrc = checkForYaboot(yconfig);
5259		}
5260
5261		if (lrc == 1 || grc == 1 || gr2c == 1 || extrc == 1 || yrc == 1
5262		|| erc == 1)
5263		return 1;
5264
5265		if (lrc == 2)
5266		printf("lilo\n");
5267		if (gr2c == 2)
5268		printf("grub2\n");
5269		if (grc == 2)
5270		printf("grub\n");
5271		if (extrc == 2)
5272		printf("extlinux\n");
5273		if (yrc == 2)
5274		printf("yaboot\n");
5275		if (erc == 2)
5276		printf("elilo\n");
5277
5278		return 0;
5279		}
5280
5281		if (grubConfig == NULL) {
5282		printf("Could not find bootloader configuration file.\n");
5283		exit(1);
5284		}
5285
5286		config = readConfig(grubConfig, cfi);
5287		if (!config)
5288		return 1;
5289
5290		if (displayDefault) {
5291		struct singleLine *line;
5292		struct singleEntry *entry;
5293		char *rootspec;
5294
5295		if (config->defaultImage == NO_DEFAULT_ENTRY)
5296		return 0;
5297		if (config->defaultImage == DEFAULT_SAVED_GRUB2 &&
5298		cfi->defaultIsSaved)
5299		config->defaultImage = FIRST_ENTRY_INDEX;
5300		entry = findEntryByIndex(config, config->defaultImage);
5301		if (!entry)
5302		return 0;
5303		if (!suitableImage(entry, bootPrefix, 0, flags))
5304		return 0;
5305
5306		line =
5307		getLineByType(LT_KERNEL | LT_HYPER | LT_KERNEL_EFI |
5308		LT_KERNEL_16, entry->lines);
5309		if (!line)
5310		return 0;
5311
5312		rootspec = getRootSpecifier(line->elements[1].item);
5313		printf("%s%s\n", bootPrefix, line->elements[1].item +
5314		((rootspec != NULL) ? strlen(rootspec) : 0));
5315
5316		return 0;
5317
5318		} else if (displayDefaultTitle) {
5319		struct singleLine *line;
5320		struct singleEntry *entry;
5321
5322		if (config->defaultImage == NO_DEFAULT_ENTRY)
5323		return 0;
5324		if (config->defaultImage == DEFAULT_SAVED_GRUB2 &&
5325		cfi->defaultIsSaved)
5326		config->defaultImage = FIRST_ENTRY_INDEX;
5327		entry = findEntryByIndex(config, config->defaultImage);
5328		if (!entry)
5329		return 0;
5330
5331		if (!configureGrub2) {
5332		char *title;
5333		line = getLineByType(LT_TITLE, entry->lines);
5334		if (!line)
5335		return 0;
5336		title = extractTitle(config, line);
5337		if (!title)
5338		return 0;
5339		printf("%s\n", title);
5340		free(title);
5341		} else {
5342		char *title;
5343
5344		dbgPrintf
5345		("This is GRUB2, default title is embeded in menuentry\n");
5346		line = getLineByType(LT_MENUENTRY, entry->lines);
5347		if (!line)
5348		return 0;
5349		title = grub2ExtractTitle(line);
5350		if (title)
5351		printf("%s\n", title);
5352		}
5353		return 0;
5354
5355		} else if (displayDefaultIndex) {
5356		if (config->defaultImage == NO_DEFAULT_ENTRY)
5357		return 0;
5358		if (config->defaultImage == DEFAULT_SAVED_GRUB2 &&
5359		cfi->defaultIsSaved)
5360		config->defaultImage = FIRST_ENTRY_INDEX;
5361		printf("%i\n", config->defaultImage);
5362		return 0;
5363
5364		} else if (kernelInfo)
5365		return displayInfo(config, kernelInfo, bootPrefix);
5366
5367		if (copyDefault) {
5368		template = findTemplate(config, bootPrefix, NULL, 0, flags);
5369		if (!template)
5370		return 1;
5371		}
5372
5373		markRemovedImage(config, removeKernelPath, bootPrefix);
5374		markRemovedImage(config, removeMBKernel, bootPrefix);
5375		setDefaultImage(config, newKernelPath != NULL, defaultKernel,
5376		makeDefault, bootPrefix, flags, defaultIndex,
5377		newIndex);
5378		setFallbackImage(config, newKernelPath != NULL);
5379		if (updateImage(config, updateKernelPath, bootPrefix, newKernelArgs,
5380		removeArgs, newMBKernelArgs, removeMBKernelArgs))
5381		return 1;
5382		if (updateKernelPath && newKernelInitrd) {
5383		if (newMBKernel) {
5384		if (addMBInitrd(config, newMBKernel, updateKernelPath,
5385		bootPrefix, newKernelInitrd,
5386		newKernelTitle))
5387		return 1;
5388		} else {
5389		if (updateInitrd(config, updateKernelPath, bootPrefix,
5390		newKernelInitrd, newKernelTitle))
5391		return 1;
5392		}
5393		}
5394		if (addNewKernel(config, template, bootPrefix, newKernelPath,
5395		newKernelTitle, newKernelArgs, newKernelInitrd,
5396		(const char **)extraInitrds, extraInitrdCount,
5397		newMBKernel, newMBKernelArgs, newDevTreePath,
5398		newIndex))
5399		return 1;
5400
5401		if (numEntries(config) == 0) {
5402		fprintf(stderr,
5403		_("grubby: doing this would leave no kernel entries. "
5404		"Not writing out new config.\n"));
5405		return 1;
5406		}
5407
5408	if (!outputFile)	if (!outputFile)
5409	outputFile = grubConfig;	outputFile = (char *)grubConfig;
5410
5411	return writeConfig(config, outputFile, bootPrefix);	return writeConfig(config, outputFile, bootPrefix);
5412	}	}

---

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Legend: Removed from v.1692   changed lines   Added in v.3029