Diff of /trunk/grubby/grubby.c

Parent Directory | Revision Log | Patch

	revision 1332 by niro, Fri Jun 3 20:32:19 2011 UTC	revision 3021 by niro, Tue Jun 27 14:39:37 2017 UTC
#	Line 36	Line 36
36	#include <signal.h>	#include <signal.h>
37	#include <blkid/blkid.h>	#include <blkid/blkid.h>
38
39		#include "log.h"
40
41		#ifndef DEBUG
42	#define DEBUG 0	#define DEBUG 0
43		#endif
44
45	#if DEBUG	#if DEBUG
46	#define dbgPrintf(format, args...) fprintf(stderr, format , ## args)	#define dbgPrintf(format, args...) fprintf(stderr, format , ## args)
#	Line 44	Line 48
48	#define dbgPrintf(format, args...)	#define dbgPrintf(format, args...)
49	#endif	#endif
50
51		int debug = 0; /* Currently just for template debugging */
52
53	#define _(A) (A)	#define _(A) (A)
54
55	#define MAX_EXTRA_INITRDS  16 /* code segment checked by --bootloader-probe */	#define MAX_EXTRA_INITRDS  16 /* code segment checked by --bootloader-probe */
56	#define CODE_SEG_SIZE  128 /* code segment checked by --bootloader-probe */	#define CODE_SEG_SIZE  128 /* code segment checked by --bootloader-probe */
57
58		#define NOOP_OPCODE 0x90
59		#define JMP_SHORT_OPCODE 0xeb
60
61		int isEfi = 0;
62
63		#if defined(__aarch64__)
64		#define isEfiOnly 1
65		#else
66		#define isEfiOnly 0
67		#endif
68
69		char *saved_command_line = NULL;
70
71	/* comments get lumped in with indention */	/* comments get lumped in with indention */
72	struct lineElement {	struct lineElement {
73	char * item;	char *item;
74	char * indent;	char *indent;
75	};	};
76
77	enum lineType_e {	enum lineType_e {
78	LT_WHITESPACE = 1 << 0,	LT_UNIDENTIFIED = 0,
79	LT_TITLE      = 1 << 1,	LT_WHITESPACE = 1 << 0,
80	LT_KERNEL     = 1 << 2,	LT_TITLE = 1 << 1,
81	LT_INITRD     = 1 << 3,	LT_KERNEL = 1 << 2,
82	LT_HYPER      = 1 << 4,	LT_INITRD = 1 << 3,
83	LT_DEFAULT    = 1 << 5,	LT_HYPER = 1 << 4,
84	LT_MBMODULE   = 1 << 6,	LT_DEFAULT = 1 << 5,
85	LT_ROOT       = 1 << 7,	LT_MBMODULE = 1 << 6,
86	LT_FALLBACK   = 1 << 8,	LT_ROOT = 1 << 7,
87	LT_KERNELARGS = 1 << 9,	LT_FALLBACK = 1 << 8,
88	LT_BOOT       = 1 << 10,	LT_KERNELARGS = 1 << 9,
89	LT_BOOTROOT   = 1 << 11,	LT_BOOT = 1 << 10,
90	LT_LBA        = 1 << 12,	LT_BOOTROOT = 1 << 11,
91	LT_OTHER      = 1 << 13,	LT_LBA = 1 << 12,
92	LT_GENERIC    = 1 << 14,	LT_OTHER = 1 << 13,
93	LT_UNKNOWN    = 1 << 15,	LT_GENERIC = 1 << 14,
94		LT_ECHO = 1 << 16,
95		LT_MENUENTRY = 1 << 17,
96		LT_ENTRY_END = 1 << 18,
97		LT_SET_VARIABLE = 1 << 19,
98		LT_KERNEL_EFI = 1 << 20,
99		LT_INITRD_EFI = 1 << 21,
100		LT_KERNEL_16 = 1 << 22,
101		LT_INITRD_16 = 1 << 23,
102		LT_DEVTREE = 1 << 24,
103		LT_UNKNOWN = 1 << 25,
104	};	};
105
106	struct singleLine {	struct singleLine {
107	char * indent;	char *indent;
108	int numElements;	int numElements;
109	struct lineElement * elements;	struct lineElement *elements;
110	struct singleLine * next;	struct singleLine *next;
111	enum lineType_e type;	enum lineType_e type;
112	};	};
113
114	struct singleEntry {	struct singleEntry {
115	struct singleLine * lines;	struct singleLine *lines;
116	int skip;	int skip;
117	int multiboot;	int multiboot;
118	struct singleEntry * next;	struct singleEntry *next;
119	};	};
120
121	#define GRUBBY_BADIMAGE_OKAY (1 << 0)	#define GRUBBY_BADIMAGE_OKAY (1 << 0)
#	Line 99  struct singleEntry {	Line 128  struct singleEntry {
128	#define NEED_TITLE   (1 << 2)	#define NEED_TITLE   (1 << 2)
129	#define NEED_ARGS    (1 << 3)	#define NEED_ARGS    (1 << 3)
130	#define NEED_MB      (1 << 4)	#define NEED_MB      (1 << 4)
131		#define NEED_END     (1 << 5)
132		#define NEED_DEVTREE (1 << 6)
133
134	#define MAIN_DEFAULT    (1 << 0)	#define MAIN_DEFAULT    (1 << 0)
135		#define FIRST_ENTRY_INDEX    0 /* boot entry index value begin and increment
136		from this initial value */
137		#define NO_DEFAULT_ENTRY    -1 /* indicates that no specific default boot
138		entry was set or currently exists */
139	#define DEFAULT_SAVED       -2	#define DEFAULT_SAVED       -2
140		#define DEFAULT_SAVED_GRUB2 -3
141
142	struct keywordTypes {	struct keywordTypes {
143	char * key;	char *key;
144	enum lineType_e type;	enum lineType_e type;
145	char nextChar;	char nextChar;
146	char separatorChar;	char separatorChar;
147	};	};
148
149		struct configFileInfo;
150
151		typedef const char *(*findConfigFunc) (struct configFileInfo *);
152		typedef const int (*writeLineFunc) (struct configFileInfo *,
153		struct singleLine * line);
154		typedef char *(*getEnvFunc) (struct configFileInfo *, char *name);
155		typedef int (*setEnvFunc) (struct configFileInfo *, char *name, char *value);
156
157	struct configFileInfo {	struct configFileInfo {
158	char * defaultConfig;	char *defaultConfig;
159	struct keywordTypes * keywords;	findConfigFunc findConfig;
160	int defaultIsIndex;	writeLineFunc writeLine;
161	int defaultSupportSaved;	getEnvFunc getEnv;
162	enum lineType_e entrySeparator;	setEnvFunc setEnv;
163	int needsBootPrefix;	struct keywordTypes *keywords;
164	int argsInQuotes;	int caseInsensitive;
165	int maxTitleLength;	int defaultIsIndex;
166	int titleBracketed;	int defaultIsVariable;
167	int mbHyperFirst;	int defaultSupportSaved;
168	int mbInitRdIsModule;	int defaultIsSaved;
169	int mbConcatArgs;	int defaultIsUnquoted;
170	int mbAllowExtraInitRds;	enum lineType_e entryStart;
171		enum lineType_e entryEnd;
172		int needsBootPrefix;
173		int argsInQuotes;
174		int maxTitleLength;
175		int titleBracketed;
176		int titlePosition;
177		int mbHyperFirst;
178		int mbInitRdIsModule;
179		int mbConcatArgs;
180		int mbAllowExtraInitRds;
181		char *envFile;
182	};	};
183
184	struct keywordTypes grubKeywords[] = {	struct keywordTypes grubKeywords[] = {
185	{ "title",    LT_TITLE,    ' ' },	{"title", LT_TITLE, ' '},
186	{ "root",    LT_BOOTROOT,    ' ' },	{"root", LT_BOOTROOT, ' '},
187	{ "default",    LT_DEFAULT,    ' ' },	{"default", LT_DEFAULT, ' '},
188	{ "fallback",   LT_FALLBACK,    ' ' },	{"fallback", LT_FALLBACK, ' '},
189	{ "kernel",    LT_KERNEL,    ' ' },	{"kernel", LT_KERNEL, ' '},
190	{ "initrd",    LT_INITRD,    ' ', ' ' },	{"initrd", LT_INITRD, ' ', ' '},
191	{ "module",     LT_MBMODULE,    ' ' },	{"module", LT_MBMODULE, ' '},
192	{ "kernel",     LT_HYPER,       ' ' },	{"kernel", LT_HYPER, ' '},
193	{ NULL,    0, 0 },	{NULL, 0, 0},
194	};	};
195
196		const char *grubFindConfig(struct configFileInfo *cfi)
197		{
198		static const char *configFiles[] = {
199		"/boot/grub/grub.conf",
200		"/boot/grub/menu.lst",
201		"/etc/grub.conf",
202		NULL
203		};
204		static int i = -1;
205
206		if (i == -1) {
207		for (i = 0; configFiles[i] != NULL; i++) {
208		dbgPrintf("Checking \"%s\": ", configFiles[i]);
209		if (!access(configFiles[i], R_OK)) {
210		dbgPrintf("found\n");
211		return configFiles[i];
212		}
213		dbgPrintf("not found\n");
214		}
215		}
216		return configFiles[i];
217		}
218
219	struct configFileInfo grubConfigType = {	struct configFileInfo grubConfigType = {
220	"/boot/grub/grub.conf",    /* defaultConfig */	.findConfig = grubFindConfig,
221	grubKeywords,    /* keywords */	.keywords = grubKeywords,
222	1,    /* defaultIsIndex */	.defaultIsIndex = 1,
223	1,    /* defaultSupportSaved */	.defaultSupportSaved = 1,
224	LT_TITLE,    /* entrySeparator */	.entryStart = LT_TITLE,
225	1,    /* needsBootPrefix */	.needsBootPrefix = 1,
226	0,    /* argsInQuotes */	.mbHyperFirst = 1,
227	0,    /* maxTitleLength */	.mbInitRdIsModule = 1,
228	0,                                      /* titleBracketed */	.mbAllowExtraInitRds = 1,
229	1,                                      /* mbHyperFirst */	.titlePosition = 1,
230	1,                                      /* mbInitRdIsModule */	};
231	0,                                      /* mbConcatArgs */
232	1,                                      /* mbAllowExtraInitRds */	struct keywordTypes grub2Keywords[] = {
233		{"menuentry", LT_MENUENTRY, ' '},
234		{"}", LT_ENTRY_END, ' '},
235		{"echo", LT_ECHO, ' '},
236		{"set", LT_SET_VARIABLE, ' ', '='},
237		{"root", LT_BOOTROOT, ' '},
238		{"default", LT_DEFAULT, ' '},
239		{"fallback", LT_FALLBACK, ' '},
240		{"linux", LT_KERNEL, ' '},
241		{"linuxefi", LT_KERNEL_EFI, ' '},
242		{"linux16", LT_KERNEL_16, ' '},
243		{"initrd", LT_INITRD, ' ', ' '},
244		{"initrdefi", LT_INITRD_EFI, ' ', ' '},
245		{"initrd16", LT_INITRD_16, ' ', ' '},
246		{"module", LT_MBMODULE, ' '},
247		{"kernel", LT_HYPER, ' '},
248		{"devicetree", LT_DEVTREE, ' '},
249		{NULL, 0, 0},
250		};
251
252		const char *grub2FindConfig(struct configFileInfo *cfi)
253		{
254		static const char *configFiles[] = {
255		"/boot/grub/grub-efi.cfg",
256		"/boot/grub/grub.cfg",
257		"/etc/grub2-efi.cfg",
258		"/etc/grub2.cfg",
259		"/boot/grub2/grub.cfg",
260		"/boot/grub2-efi/grub.cfg",
261		NULL
262		};
263		static int i = -1;
264		static const char *grub_cfg = "/boot/grub/grub.cfg";
265		int rc = -1;
266
267		if (i == -1) {
268		for (i = 0; configFiles[i] != NULL; i++) {
269		dbgPrintf("Checking \"%s\": ", configFiles[i]);
270		if ((rc = access(configFiles[i], R_OK))) {
271		if (errno == EACCES) {
272		printf
273		("Unable to access bootloader configuration file "
274		"\"%s\": %m\n", configFiles[i]);
275		exit(1);
276		}
277		continue;
278		} else {
279		dbgPrintf("found\n");
280		return configFiles[i];
281		}
282		}
283		}
284
285		/* Ubuntu renames grub2 to grub, so check for the grub.d directory
286		* that isn't in grub1, and if it exists, return the config file path
287		* that they use. */
288		if (configFiles[i] == NULL && !access("/etc/grub.d/", R_OK)) {
289		dbgPrintf("found\n");
290		return grub_cfg;
291		}
292
293		dbgPrintf("not found\n");
294		return configFiles[i];
295		}
296
297		/* kind of hacky.  It'll give the first 1024 bytes, ish. */
298		static char *grub2GetEnv(struct configFileInfo *info, char *name)
299		{
300		static char buf[1025];
301		char *s = NULL;
302		char *ret = NULL;
303		char *envFile = info->envFile ? info->envFile : "/boot/grub/grubenv";
304		int rc =
305		asprintf(&s, "grub-editenv %s list | grep '^%s='", envFile, name);
306
307		if (rc < 0)
308		return NULL;
309
310		FILE *f = popen(s, "r");
311		if (!f)
312		goto out;
313
314		memset(buf, '\0', sizeof(buf));
315		ret = fgets(buf, 1024, f);
316		pclose(f);
317
318		if (ret) {
319		ret += strlen(name) + 1;
320		ret[strlen(ret) - 1] = '\0';
321		}
322		dbgPrintf("grub2GetEnv(%s): %s\n", name, ret);
323		out:
324		free(s);
325		return ret;
326		}
327
328		static int sPopCount(const char *s, const char *c)
329		{
330		int ret = 0;
331		if (!s)
332		return -1;
333		for (int i = 0; s[i] != '\0'; i++)
334		for (int j = 0; c[j] != '\0'; j++)
335		if (s[i] == c[j])
336		ret++;
337		return ret;
338		}
339
340		static char *shellEscape(const char *s)
341		{
342		int l = strlen(s) + sPopCount(s, "'") * 2;
343
344		char *ret = calloc(l + 1, sizeof(*ret));
345		if (!ret)
346		return NULL;
347		for (int i = 0, j = 0; s[i] != '\0'; i++, j++) {
348		if (s[i] == '\'')
349		ret[j++] = '\\';
350		ret[j] = s[i];
351		}
352		return ret;
353		}
354
355		static void unquote(char *s)
356		{
357		int l = strlen(s);
358
359		if ((s[l - 1] == '\'' && s[0] == '\'')
360		|| (s[l - 1] == '"' && s[0] == '"')) {
361		memmove(s, s + 1, l - 2);
362		s[l - 2] = '\0';
363		}
364		}
365
366		static int grub2SetEnv(struct configFileInfo *info, char *name, char *value)
367		{
368		char *s = NULL;
369		int rc = 0;
370		char *envFile = info->envFile ? info->envFile : "/boot/grub/grubenv";
371
372		unquote(value);
373		value = shellEscape(value);
374		if (!value)
375		return -1;
376
377		rc = asprintf(&s, "grub-editenv %s set '%s=%s'", envFile, name, value);
378		free(value);
379		if (rc < 0)
380		return -1;
381
382		dbgPrintf("grub2SetEnv(%s): %s\n", name, s);
383		rc = system(s);
384		free(s);
385		return rc;
386		}
387
388		/* this is a gigantic hack to avoid clobbering grub2 variables... */
389		static int is_special_grub2_variable(const char *name)
390		{
391		if (!strcmp(name, "\"${next_entry}\""))
392		return 1;
393		if (!strcmp(name, "\"${prev_saved_entry}\""))
394		return 1;
395		return 0;
396		}
397
398		int sizeOfSingleLine(struct singleLine *line)
399		{
400		int count = 0;
401
402		for (int i = 0; i < line->numElements; i++) {
403		int indentSize = 0;
404
405		count = count + strlen(line->elements[i].item);
406
407		indentSize = strlen(line->elements[i].indent);
408		if (indentSize > 0)
409		count = count + indentSize;
410		else
411		/* be extra safe and add room for whitespaces */
412		count = count + 1;
413		}
414
415		/* room for trailing terminator */
416		count = count + 1;
417
418		return count;
419		}
420
421		static int isquote(char q)
422		{
423		if (q == '\'' || q == '\"')
424		return 1;
425		return 0;
426		}
427
428		static int iskernel(enum lineType_e type)
429		{
430		return (type == LT_KERNEL || type == LT_KERNEL_EFI
431		|| type == LT_KERNEL_16);
432		}
433
434		static int isinitrd(enum lineType_e type)
435		{
436		return (type == LT_INITRD || type == LT_INITRD_EFI
437		|| type == LT_INITRD_16);
438		}
439
440		char *grub2ExtractTitle(struct singleLine *line)
441		{
442		char *current;
443		char *current_indent;
444		int current_len;
445		int current_indent_len;
446		int i;
447
448		/* bail out if line does not start with menuentry */
449		if (strcmp(line->elements[0].item, "menuentry"))
450		return NULL;
451
452		i = 1;
453		current = line->elements[i].item;
454		current_len = strlen(current);
455
456		/* if second word is quoted, strip the quotes and return single word */
457		if (isquote(*current) && isquote(current[current_len - 1])) {
458		char *tmp;
459
460		tmp = strdup(current + 1);
461		if (!tmp)
462		return NULL;
463		tmp[strlen(tmp) - 1] = '\0';
464		return tmp;
465		}
466
467		/* if no quotes, return second word verbatim */
468		if (!isquote(*current))
469		return current;
470
471		/* second element start with a quote, so we have to find the element
472		* whose last character is also quote (assuming it's the closing one) */
473		int resultMaxSize;
474		char *result;
475		/* need to ensure that ' does not match " as we search */
476		char quote_char = *current;
477
478		resultMaxSize = sizeOfSingleLine(line);
479		result = malloc(resultMaxSize);
480		snprintf(result, resultMaxSize, "%s", ++current);
481
482		i++;
483		for (; i < line->numElements; ++i) {
484		current = line->elements[i].item;
485		current_len = strlen(current);
486		current_indent = line->elements[i].indent;
487		current_indent_len = strlen(current_indent);
488
489		strncat(result, current_indent, current_indent_len);
490		if (current[current_len - 1] != quote_char) {
491		strncat(result, current, current_len);
492		} else {
493		strncat(result, current, current_len - 1);
494		break;
495		}
496		}
497		return result;
498		}
499
500		struct configFileInfo grub2ConfigType = {
501		.findConfig = grub2FindConfig,
502		.getEnv = grub2GetEnv,
503		.setEnv = grub2SetEnv,
504		.keywords = grub2Keywords,
505		.defaultIsIndex = 1,
506		.defaultSupportSaved = 1,
507		.defaultIsVariable = 1,
508		.entryStart = LT_MENUENTRY,
509		.entryEnd = LT_ENTRY_END,
510		.titlePosition = 1,
511		.needsBootPrefix = 1,
512		.mbHyperFirst = 1,
513		.mbInitRdIsModule = 1,
514		.mbAllowExtraInitRds = 1,
515	};	};
516
517	struct keywordTypes yabootKeywords[] = {	struct keywordTypes yabootKeywords[] = {
518	{ "label",    LT_TITLE,    '=' },	{"label", LT_TITLE, '='},
519	{ "root",    LT_ROOT,    '=' },	{"root", LT_ROOT, '='},
520	{ "default",    LT_DEFAULT,    '=' },	{"default", LT_DEFAULT, '='},
521	{ "image",    LT_KERNEL,    '=' },	{"image", LT_KERNEL, '='},
522	{ "bsd",    LT_GENERIC,    '=' },	{"bsd", LT_GENERIC, '='},
523	{ "macos",    LT_GENERIC,    '=' },	{"macos", LT_GENERIC, '='},
524	{ "macosx",    LT_GENERIC,    '=' },	{"macosx", LT_GENERIC, '='},
525	{ "magicboot",  LT_GENERIC,    '=' },	{"magicboot", LT_GENERIC, '='},
526	{ "darwin",    LT_GENERIC,    '=' },	{"darwin", LT_GENERIC, '='},
527	{ "timeout",    LT_GENERIC,    '=' },	{"timeout", LT_GENERIC, '='},
528	{ "install",    LT_GENERIC,    '=' },	{"install", LT_GENERIC, '='},
529	{ "fstype",    LT_GENERIC,    '=' },	{"fstype", LT_GENERIC, '='},
530	{ "hfstype",    LT_GENERIC,    '=' },	{"hfstype", LT_GENERIC, '='},
531	{ "delay",    LT_GENERIC,    '=' },	{"delay", LT_GENERIC, '='},
532	{ "defaultos",  LT_GENERIC,     '=' },	{"defaultos", LT_GENERIC, '='},
533	{ "init-message", LT_GENERIC,   '=' },	{"init-message", LT_GENERIC, '='},
534	{ "enablecdboot", LT_GENERIC,   ' ' },	{"enablecdboot", LT_GENERIC, ' '},
535	{ "enableofboot", LT_GENERIC,   ' ' },	{"enableofboot", LT_GENERIC, ' '},
536	{ "enablenetboot", LT_GENERIC,  ' ' },	{"enablenetboot", LT_GENERIC, ' '},
537	{ "nonvram",    LT_GENERIC,    ' ' },	{"nonvram", LT_GENERIC, ' '},
538	{ "hide",    LT_GENERIC,    ' ' },	{"hide", LT_GENERIC, ' '},
539	{ "protect",    LT_GENERIC,    ' ' },	{"protect", LT_GENERIC, ' '},
540	{ "nobless",    LT_GENERIC,    ' ' },	{"nobless", LT_GENERIC, ' '},
541	{ "nonvram",    LT_GENERIC,    ' ' },	{"nonvram", LT_GENERIC, ' '},
542	{ "brokenosx",  LT_GENERIC,    ' ' },	{"brokenosx", LT_GENERIC, ' '},
543	{ "usemount",   LT_GENERIC,    ' ' },	{"usemount", LT_GENERIC, ' '},
544	{ "mntpoint",   LT_GENERIC,    '=' },	{"mntpoint", LT_GENERIC, '='},
545	{ "partition",  LT_GENERIC,    '=' },	{"partition", LT_GENERIC, '='},
546	{ "device",    LT_GENERIC,    '=' },	{"device", LT_GENERIC, '='},
547	{ "fstype",    LT_GENERIC,    '=' },	{"fstype", LT_GENERIC, '='},
548	{ "initrd",    LT_INITRD,    '=', ';' },	{"initrd", LT_INITRD, '=', ';'},
549	{ "append",    LT_KERNELARGS,  '=' },	{"append", LT_KERNELARGS, '='},
550	{ "boot",    LT_BOOT,    '=' },	{"boot", LT_BOOT, '='},
551	{ "lba",    LT_LBA,    ' ' },	{"lba", LT_LBA, ' '},
552	{ NULL,    0, 0 },	{NULL, 0, 0},
553	};	};
554
555	struct keywordTypes liloKeywords[] = {	struct keywordTypes liloKeywords[] = {
556	{ "label",    LT_TITLE,    '=' },	{"label", LT_TITLE, '='},
557	{ "root",    LT_ROOT,    '=' },	{"root", LT_ROOT, '='},
558	{ "default",    LT_DEFAULT,    '=' },	{"default", LT_DEFAULT, '='},
559	{ "image",    LT_KERNEL,    '=' },	{"image", LT_KERNEL, '='},
560	{ "other",    LT_OTHER,    '=' },	{"other", LT_OTHER, '='},
561	{ "initrd",    LT_INITRD,    '=' },	{"initrd", LT_INITRD, '='},
562	{ "append",    LT_KERNELARGS,  '=' },	{"append", LT_KERNELARGS, '='},
563	{ "boot",    LT_BOOT,    '=' },	{"boot", LT_BOOT, '='},
564	{ "lba",    LT_LBA,    ' ' },	{"lba", LT_LBA, ' '},
565	{ NULL,    0, 0 },	{NULL, 0, 0},
566	};	};
567
568	struct keywordTypes eliloKeywords[] = {	struct keywordTypes eliloKeywords[] = {
569	{ "label",    LT_TITLE,    '=' },	{"label", LT_TITLE, '='},
570	{ "root",    LT_ROOT,    '=' },	{"root", LT_ROOT, '='},
571	{ "default",    LT_DEFAULT,    '=' },	{"default", LT_DEFAULT, '='},
572	{ "image",    LT_KERNEL,    '=' },	{"image", LT_KERNEL, '='},
573	{ "initrd",    LT_INITRD,    '=' },	{"initrd", LT_INITRD, '='},
574	{ "append",    LT_KERNELARGS,  '=' },	{"append", LT_KERNELARGS, '='},
575	{ "vmm",    LT_HYPER,       '=' },	{"vmm", LT_HYPER, '='},
576	{ NULL,    0, 0 },	{NULL, 0, 0},
577	};	};
578
579	struct keywordTypes siloKeywords[] = {	struct keywordTypes siloKeywords[] = {
580	{ "label",    LT_TITLE,    '=' },	{"label", LT_TITLE, '='},
581	{ "root",    LT_ROOT,    '=' },	{"root", LT_ROOT, '='},
582	{ "default",    LT_DEFAULT,    '=' },	{"default", LT_DEFAULT, '='},
583	{ "image",    LT_KERNEL,    '=' },	{"image", LT_KERNEL, '='},
584	{ "other",    LT_OTHER,    '=' },	{"other", LT_OTHER, '='},
585	{ "initrd",    LT_INITRD,    '=' },	{"initrd", LT_INITRD, '='},
586	{ "append",    LT_KERNELARGS,  '=' },	{"append", LT_KERNELARGS, '='},
587	{ "boot",    LT_BOOT,    '=' },	{"boot", LT_BOOT, '='},
588	{ NULL,    0, 0 },	{NULL, 0, 0},
589	};	};
590
591	struct keywordTypes ziplKeywords[] = {	struct keywordTypes ziplKeywords[] = {
592	{ "target",     LT_BOOTROOT,    '=' },	{"target", LT_BOOTROOT, '='},
593	{ "image",      LT_KERNEL,      '=' },	{"image", LT_KERNEL, '='},
594	{ "ramdisk",    LT_INITRD,      '=' },	{"ramdisk", LT_INITRD, '='},
595	{ "parameters", LT_KERNELARGS,  '=' },	{"parameters", LT_KERNELARGS, '='},
596	{ "default",    LT_DEFAULT,     '=' },	{"default", LT_DEFAULT, '='},
597	{ NULL,         0, 0 },	{NULL, 0, 0},
598	};	};
599
600	struct keywordTypes extlinuxKeywords[] = {	struct keywordTypes extlinuxKeywords[] = {
601	{ "label",    LT_TITLE,    ' ' },	{"label", LT_TITLE, ' '},
602	{ "root",    LT_ROOT,    ' ' },	{"root", LT_ROOT, ' '},
603	{ "default",    LT_DEFAULT,    ' ' },	{"default", LT_DEFAULT, ' '},
604	{ "kernel",    LT_KERNEL,    ' ' },	{"kernel", LT_KERNEL, ' '},
605	{ "initrd",    LT_INITRD,      ' ', ',' },	{"initrd", LT_INITRD, ' ', ','},
606	{ "append",    LT_KERNELARGS,  ' ' },	{"append", LT_KERNELARGS, ' '},
607	{ "prompt",     LT_UNKNOWN,     ' ' },	{"prompt", LT_UNKNOWN, ' '},
608	{ NULL,    0, 0 },	{"fdt", LT_DEVTREE, ' '},
609		{"fdtdir", LT_DEVTREE, ' '},
610		{NULL, 0, 0},
611	};	};
612
613	int useextlinuxmenu;	int useextlinuxmenu;
614	struct configFileInfo eliloConfigType = {	struct configFileInfo eliloConfigType = {
615	"/boot/efi/EFI/redhat/elilo.conf",    /* defaultConfig */	.defaultConfig = "/boot/efi/EFI/redhat/elilo.conf",
616	eliloKeywords,    /* keywords */	.keywords = eliloKeywords,
617	0,    /* defaultIsIndex */	.entryStart = LT_KERNEL,
618	0,    /* defaultSupportSaved */	.needsBootPrefix = 1,
619	LT_KERNEL,    /* entrySeparator */	.argsInQuotes = 1,
620	1,                    /* needsBootPrefix */	.mbConcatArgs = 1,
621	1,    /* argsInQuotes */	.titlePosition = 1,
	0,    /* maxTitleLength */
	0,                                      /* titleBracketed */
	0,                                      /* mbHyperFirst */
	0,                                      /* mbInitRdIsModule */
	1,                                      /* mbConcatArgs */
	0,                                      /* mbAllowExtraInitRds */
622	};	};
623
624	struct configFileInfo liloConfigType = {	struct configFileInfo liloConfigType = {
625	"/etc/lilo.conf",    /* defaultConfig */	.defaultConfig = "/etc/lilo.conf",
626	liloKeywords,    /* keywords */	.keywords = liloKeywords,
627	0,    /* defaultIsIndex */	.entryStart = LT_KERNEL,
628	0,    /* defaultSupportSaved */	.argsInQuotes = 1,
629	LT_KERNEL,    /* entrySeparator */	.maxTitleLength = 15,
630	0,    /* needsBootPrefix */	.titlePosition = 1,
	1,    /* argsInQuotes */
	15,    /* maxTitleLength */
	0,                                      /* titleBracketed */
	0,                                      /* mbHyperFirst */
	0,                                      /* mbInitRdIsModule */
	0,                                      /* mbConcatArgs */
	0,                                      /* mbAllowExtraInitRds */
631	};	};
632
633	struct configFileInfo yabootConfigType = {	struct configFileInfo yabootConfigType = {
634	"/etc/yaboot.conf",    /* defaultConfig */	.defaultConfig = "/etc/yaboot.conf",
635	yabootKeywords,    /* keywords */	.keywords = yabootKeywords,
636	0,    /* defaultIsIndex */	.entryStart = LT_KERNEL,
637	0,    /* defaultSupportSaved */	.needsBootPrefix = 1,
638	LT_KERNEL,    /* entrySeparator */	.argsInQuotes = 1,
639	1,    /* needsBootPrefix */	.maxTitleLength = 15,
640	1,    /* argsInQuotes */	.mbAllowExtraInitRds = 1,
641	15,    /* maxTitleLength */	.titlePosition = 1,
	0,                                      /* titleBracketed */
	0,                                      /* mbHyperFirst */
	0,                                      /* mbInitRdIsModule */
	0,                                      /* mbConcatArgs */
	1,                                      /* mbAllowExtraInitRds */
642	};	};
643
644	struct configFileInfo siloConfigType = {	struct configFileInfo siloConfigType = {
645	"/etc/silo.conf",    /* defaultConfig */	.defaultConfig = "/etc/silo.conf",
646	siloKeywords,    /* keywords */	.keywords = siloKeywords,
647	0,    /* defaultIsIndex */	.entryStart = LT_KERNEL,
648	0,    /* defaultSupportSaved */	.needsBootPrefix = 1,
649	LT_KERNEL,    /* entrySeparator */	.argsInQuotes = 1,
650	1,    /* needsBootPrefix */	.maxTitleLength = 15,
651	1,    /* argsInQuotes */	.titlePosition = 1,
	15,    /* maxTitleLength */
	0,                                      /* titleBracketed */
	0,                                      /* mbHyperFirst */
	0,                                      /* mbInitRdIsModule */
	0,                                      /* mbConcatArgs */
	0,                                      /* mbAllowExtraInitRds */
652	};	};
653
654	struct configFileInfo ziplConfigType = {	struct configFileInfo ziplConfigType = {
655	"/etc/zipl.conf",    /* defaultConfig */	.defaultConfig = "/etc/zipl.conf",
656	ziplKeywords,    /* keywords */	.keywords = ziplKeywords,
657	0,    /* defaultIsIndex */	.entryStart = LT_TITLE,
658	0,    /* defaultSupportSaved */	.argsInQuotes = 1,
659	LT_TITLE,    /* entrySeparator */	.titleBracketed = 1,
	0,    /* needsBootPrefix */
	1,    /* argsInQuotes */
	0,    /* maxTitleLength */
	1,                                      /* titleBracketed */
	0,                                      /* mbHyperFirst */
	0,                                      /* mbInitRdIsModule */
	0,                                      /* mbConcatArgs */
	0,                                      /* mbAllowExtraInitRds */
660	};	};
661
662	struct configFileInfo extlinuxConfigType = {	struct configFileInfo extlinuxConfigType = {
663	"/boot/extlinux/extlinux.conf",         /* defaultConfig */	.defaultConfig = "/boot/extlinux/extlinux.conf",
664	extlinuxKeywords,                       /* keywords */	.keywords = extlinuxKeywords,
665	0,                                      /* defaultIsIndex */	.caseInsensitive = 1,
666	0,                                      /* defaultSupportSaved */	.entryStart = LT_TITLE,
667	LT_TITLE,                               /* entrySeparator */	.needsBootPrefix = 1,
668	1,                                      /* needsBootPrefix */	.maxTitleLength = 255,
669	0,                                      /* argsInQuotes */	.mbAllowExtraInitRds = 1,
670	255,                                    /* maxTitleLength */	.defaultIsUnquoted = 1,
671	0,                                      /* titleBracketed */	.titlePosition = 1,
	0,                                      /* mbHyperFirst */
	0,                                      /* mbInitRdIsModule */
	0,                                      /* mbConcatArgs */
	1,                                      /* mbAllowExtraInitRds */
672	};	};
673
674	struct grubConfig {	struct grubConfig {
675	struct singleLine * theLines;	struct singleLine *theLines;
676	struct singleEntry * entries;	struct singleEntry *entries;
677	char * primaryIndent;	char *primaryIndent;
678	char * secondaryIndent;	char *secondaryIndent;
679	int defaultImage;    /* -1 if none specified -- this value is	int defaultImage; /* -1 if none specified -- this value is
680	* written out, overriding original */	* written out, overriding original */
681	int fallbackImage;    /* just like defaultImage */	int fallbackImage; /* just like defaultImage */
682	int flags;	int flags;
683	struct configFileInfo * cfi;	struct configFileInfo *cfi;
684		int isModified; /* assumes only one entry added
685		per invocation of grubby */
686	};	};
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;
	kw = getKeywordByType(line->type, cfi);
1106
1107	/* space isn't the only separator, we need to split	line->numElements++;
1108	* elements up more	first = 0;
1109	*/	}
	if (!isspace(kw->separatorChar)) {
	int i;
	char indent[2] = "";
	indent[0] = kw->separatorChar;
	for (i = 1; i < line->numElements; i++) {
	char *p;
	int j;
	int numNewElements;
1110
1111	numNewElements = 0;	if (!line->numElements)
1112	p = line->elements[i].item;	line->type = LT_WHITESPACE;
1113	while (*p != '\0') {	else {
1114	if (*p == kw->separatorChar)	line->type = getTypeByKeyword(line->elements[0].item, cfi);
1115	numNewElements++;	if (line->type == LT_UNKNOWN) {
1116	p++;	/* zipl does [title] instead of something reasonable
1117	}	* like all the other boot loaders.  kind of ugly */
1118	if (line->numElements + numNewElements >= elementsAlloced) {	if (cfi->titleBracketed && isBracketedTitle(line)) {
1119	elementsAlloced += numNewElements + 5;	line->type = LT_TITLE;
	line->elements = realloc(line->elements,
	sizeof(*line->elements) * elementsAlloced);
1120	}	}
1121
1122	for (j = line->numElements; j > i; j--) {	/* this is awkward, but we need to be able to handle
1123	line->elements[j + numNewElements] = line->elements[j];	* keywords that begin with a # (specifically for
1124		* #boot in grub.conf), but still make comments lines
1125		* with no elements (everything stored in the indent
1126		*/
1127		if (*line->elements[0].item == '#') {
1128		char *fullLine;
1129		int len;
1130
1131		len = strlen(line->indent);
1132		for (int i = 0; i < line->numElements; i++)
1133		len += strlen(line->elements[i].item) +
1134		strlen(line->elements[i].indent);
1135
1136		fullLine = malloc(len + 1);
1137		strcpy(fullLine, line->indent);
1138		free(line->indent);
1139		line->indent = fullLine;
1140
1141		for (int i = 0; i < line->numElements; i++) {
1142		strcat(fullLine,
1143		line->elements[i].item);
1144		strcat(fullLine,
1145		line->elements[i].indent);
1146		free(line->elements[i].item);
1147		free(line->elements[i].indent);
1148		}
1149
1150		line->type = LT_WHITESPACE;
1151		line->numElements = 0;
1152	}	}
1153	line->numElements += numNewElements;	} else if (line->type == LT_INITRD) {
1154		struct keywordTypes *kw;
1155
1156	p = line->elements[i].item;	kw = getKeywordByType(line->type, cfi);
	while (*p != '\0') {
1157
1158	while (*p != kw->separatorChar && *p != '\0') p++;	/* space isn't the only separator, we need to split
1159	if (*p == '\0') {	* elements up more
1160	break;	*/
1161	}	if (!isspace(kw->separatorChar)) {
1162		char indent[2] = "";
1163		indent[0] = kw->separatorChar;
1164		for (int i = 1; i < line->numElements; i++) {
1165		char *p;
1166		int numNewElements;
1167
1168		numNewElements = 0;
1169		p = line->elements[i].item;
1170		while (*p != '\0') {
1171		if (*p == kw->separatorChar)
1172		numNewElements++;
1173		p++;
1174		}
1175		if (line->numElements +
1176		numNewElements >= elementsAlloced) {
1177		elementsAlloced +=
1178		numNewElements + 5;
1179		line->elements =
1180		realloc(line->elements,
1181		sizeof(*line->
1182		elements) *
1183		elementsAlloced);
1184		}
1185
1186	free(line->elements[i].indent);	for (int j = line->numElements; j > i;
1187	line->elements[i].indent = strdup(indent);	j--) {
1188	*p++ = '\0';	line->elements[j +
1189	i++;	numNewElements] =
1190	line->elements[i].item = strdup(p);	line->elements[j];
1191	line->elements[i].indent = strdup("");	}
1192	p = line->elements[i].item;	line->numElements += numNewElements;
1193
1194		p = line->elements[i].item;
1195		while (*p != '\0') {
1196
1197		while (*p != kw->separatorChar
1198		&& *p != '\0')
1199		p++;
1200		if (*p == '\0') {
1201		break;
1202		}
1203
1204		line->elements[i + 1].indent =
1205		line->elements[i].indent;
1206		line->elements[i].indent =
1207		strdup(indent);
1208		*p++ = '\0';
1209		i++;
1210		line->elements[i].item =
1211		strdup(p);
1212		}
1213		}
1214		}
1215		} else if (line->type == LT_SET_VARIABLE) {
1216		/* and if it's a "set blah=" we need to split it
1217		* yet a third way to avoid rhbz# XXX FIXME :/
1218		*/
1219		char *eq;
1220		int l;
1221		int numElements = line->numElements;
1222		struct lineElement *newElements;
1223		eq = strchr(line->elements[1].item, '=');
1224		if (!eq)
1225		return 0;
1226		l = eq - line->elements[1].item;
1227		if (eq[1] != 0)
1228		numElements++;
1229		newElements = calloc(numElements,sizeof (*newElements));
1230		memcpy(&newElements[0], &line->elements[0],
1231		sizeof (newElements[0]));
1232		newElements[1].item =
1233		strndup(line->elements[1].item, l);
1234		newElements[1].indent = "=";
1235		*(eq++) = '\0';
1236		newElements[2].item = strdup(eq);
1237		free(line->elements[1].item);
1238		if (line->elements[1].indent)
1239		newElements[2].indent = line->elements[1].indent;
1240		for (int i = 2; i < line->numElements; i++) {
1241		newElements[i+1].item = line->elements[i].item;
1242		newElements[i+1].indent =
1243		line->elements[i].indent;
1244	}	}
1245	}	free(line->elements);
1246		line->elements = newElements;
1247		line->numElements = numElements;
1248	}	}
1249	}	}
	}
1250
1251	return 0;	return 0;
1252	}	}
1253
1254	static struct grubConfig * readConfig(const char * inName,	static int isnumber(const char *s)
1255	struct configFileInfo * cfi) {	{
1256	int in;	int i;
1257	char * incoming = NULL, * head;	for (i = 0; s[i] != '\0'; i++)
1258	int rc;	if (s[i] < '0' || s[i] > '9')
1259	int sawEntry = 0;	return 0;
1260	int movedLine = 0;	return i;
1261	struct grubConfig * cfg;	}
1262	struct singleLine * last = NULL, * line, * defaultLine = NULL;
1263	char * end;	static struct grubConfig *readConfig(const char *inName,
1264	struct singleEntry * entry = NULL;	struct configFileInfo *cfi)
1265	int i, len;	{
1266	char * buf;	int in;
1267		char *incoming = NULL, *head;
1268	if (!strcmp(inName, "-")) {	int rc;
1269	in = 0;	int sawEntry = 0;
1270	} else {	int movedLine = 0;
1271	if ((in = open(inName, O_RDONLY)) < 0) {	struct grubConfig *cfg;
1272	fprintf(stderr, _("error opening %s for read: %s\n"),	struct singleLine *last = NULL, *line, *defaultLine = NULL;
1273	inName, strerror(errno));	char *end;
1274	return NULL;	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 {
1284		if ((in = open(inName, O_RDONLY)) < 0) {
1285		fprintf(stderr, _("error opening %s for read: %s\n"),
1286		inName, strerror(errno));
1287		return NULL;
1288		}
1289	}	}
	}
1290
1291	rc = readFile(in, &incoming);	rc = readFile(in, &incoming);
1292	close(in);	close(in);
1293	if (rc) return NULL;	if (rc)
1294		return NULL;
1295	head = incoming;
1296	cfg = malloc(sizeof(*cfg));	head = incoming;
1297	cfg->primaryIndent = strdup("");	cfg = malloc(sizeof(*cfg));
1298	cfg->secondaryIndent = strdup("\t");	cfg->primaryIndent = strdup("");
1299	cfg->flags = GRUB_CONFIG_NO_DEFAULT;	cfg->secondaryIndent = strdup("\t");
1300	cfg->cfi = cfi;	cfg->flags = GRUB_CONFIG_NO_DEFAULT;
1301	cfg->theLines = NULL;	cfg->cfi = cfi;
1302	cfg->entries = NULL;	cfg->theLines = NULL;
1303	cfg->fallbackImage = 0;	cfg->entries = NULL;
1304		cfg->fallbackImage = 0;
1305	/* copy everything we have */	cfg->isModified = 0;
1306	while (*head) {
1307	line = malloc(sizeof(*line));	/* copy everything we have */
1308	lineInit(line);	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	if (getNextLine(&head, line, cfi)) {	if (!sawEntry && line->numElements) {
1319	free(line);	free(cfg->primaryIndent);
1320	/* XXX memory leak of everything in cfg */	cfg->primaryIndent = strdup(line->indent);
1321	return NULL;	} else if (line->numElements) {
1322	}	free(cfg->secondaryIndent);
1323		cfg->secondaryIndent = strdup(line->indent);
1324	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;
	}
1325
1326	entry->skip = 0;	if (isEntryStart(line, cfi) || (cfg->entries && !sawEntry)) {
1327	entry->multiboot = 0;	sawEntry = 1;
1328	entry->lines = NULL;	if (!entry) {
1329	entry->next = NULL;	cfg->entries = malloc(sizeof(*entry));
1330	}	entry = cfg->entries;
1331		} else {
1332	if (line->type == LT_DEFAULT && line->numElements == 2) {	entry->next = malloc(sizeof(*entry));
1333	cfg->flags &= ~GRUB_CONFIG_NO_DEFAULT;	entry = entry->next;
1334	defaultLine = line;	}
	} else if (line->type == LT_KERNEL) {
	/* if by some freak chance this is multiboot and the "module"
	* lines came earlier in the template, make sure to use LT_HYPER
	* instead of LT_KERNEL now
	*/
	if (entry->multiboot)
	line->type = LT_HYPER;
	} else if (line->type == LT_MBMODULE) {
	/* go back and fix the LT_KERNEL line to indicate LT_HYPER
	* instead, now that we know this is a multiboot entry.
	* This only applies to grub, but that's the only place we
	* should find LT_MBMODULE lines anyway.
	*/
	struct singleLine * l;
	for (l = entry->lines; l; l = l->next) {
	if (l->type == LT_HYPER)
	break;
	else if (l->type == LT_KERNEL) {
	l->type = LT_HYPER;
	break;
	}
	}
	entry->multiboot = 1;
	} else if (line->type == LT_HYPER) {
	entry->multiboot = 1;
	} else if (line->type == LT_FALLBACK && line->numElements == 2) {
	cfg->fallbackImage = strtol(line->elements[1].item, &end, 10);
	if (*end) cfg->fallbackImage = -1;
	} else if (line->type == LT_TITLE && line->numElements > 1) {
	/* make the title a single argument (undoing our parsing) */
	len = 0;
	for (i = 1; i < line->numElements; i++) {
	len += strlen(line->elements[i].item);
	len += strlen(line->elements[i].indent);
	}
	buf = malloc(len + 1);
	*buf = '\0';
1335
1336	for (i = 1; i < line->numElements; i++) {	entry->skip = 0;
1337	strcat(buf, line->elements[i].item);	entry->multiboot = 0;
1338	free(line->elements[i].item);	entry->lines = NULL;
1339		entry->next = NULL;
1340		}
1341
1342	if ((i + 1) != line->numElements) {	if (line->type == LT_SET_VARIABLE) {
1343	strcat(buf, line->elements[i].indent);	dbgPrintf("found 'set' command (%d elements): ",
1344	free(line->elements[i].indent);	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[1].indent =	line->elements[i].indent);
1349	line->elements[line->numElements - 1].indent;	dbgPrintf("\n");
1350	line->elements[1].item = buf;	struct keywordTypes *kwType =
1351	line->numElements = 2;	getKeywordByType(LT_DEFAULT, cfi);
1352		if (kwType && line->numElements == 3
1353	} else if (line->type == LT_KERNELARGS && cfi->argsInQuotes) {	&& !strcmp(line->elements[1].item, kwType->key)
1354	/* Strip off any " which may be present; they'll be put back	&& !is_special_grub2_variable(
1355	on write. This is one of the few (the only?) places that grubby	line->elements[2].item)) {
1356	canonicalizes the output */	dbgPrintf("Line sets default config\n");
1357		cfg->flags &= ~GRUB_CONFIG_NO_DEFAULT;
1358	if (line->numElements >= 2) {	defaultLine = line;
1359	int last, len;	}
1360		} else if (iskernel(line->type)) {
1361	if (*line->elements[1].item == '"')	/* if by some freak chance this is multiboot and the
1362	memmove(line->elements[1].item, line->elements[1].item + 1,	* "module" lines came earlier in the template, make
1363	strlen(line->elements[1].item + 1) + 1);	* sure to use LT_HYPER instead of LT_KERNEL now
1364		*/
1365	last = line->numElements - 1;	if (entry && entry->multiboot)
1366	len = strlen(line->elements[last].item) - 1;	line->type = LT_HYPER;
	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;
1367
1368	if (sawEntry) {	} else if (line->type == LT_MBMODULE) {
1369	if (!entry->lines)	/* go back and fix the LT_KERNEL line to indicate
1370	entry->lines = line;	* LT_HYPER instead, now that we know this is a
1371	else	* multiboot entry.  This only applies to grub, but
1372	last->next = line;	* that's the only place we should find LT_MBMODULE
1373	dbgPrintf("readConfig added %d to %p\n", line->type, entry);	* lines anyway.
1374	} else {	*/
1375	if (!cfg->theLines)	for (struct singleLine * l = entry->lines; l;
1376	cfg->theLines = line;	l = l->next) {
1377	else	if (l->type == LT_HYPER)
1378	last->next = line;	break;
1379	dbgPrintf("readConfig added %d to cfg\n", line->type);	else if (iskernel(l->type)) {
1380	}	l->type = LT_HYPER;
1381		break;
1382		}
1383		}
1384		entry->multiboot = 1;
1385
1386	last = line;	} else if (line->type == LT_HYPER) {
1387	}	entry->multiboot = 1;
1388
1389	free(incoming);	} else if (line->type == LT_FALLBACK && line->numElements == 2) {
1390		cfg->fallbackImage =
1391		strtol(line->elements[1].item, &end, 10);
1392		if (*end)
1393		cfg->fallbackImage = -1;
1394
1395		} else if ((line->type == LT_DEFAULT && cfi->defaultIsUnquoted)
1396		|| (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	if (defaultLine) {	for (int i = 1; i < line->numElements; i++) {
1409	if (cfi->defaultSupportSaved &&	strcat(buf, line->elements[i].item);
1410	!strncmp(defaultLine->elements[1].item, "saved", 5)) {	free(line->elements[i].item);
1411	cfg->defaultImage = DEFAULT_SAVED;
1412	} else if (cfi->defaultIsIndex) {	if ((i + 1) != line->numElements) {
1413	cfg->defaultImage = strtol(defaultLine->elements[1].item, &end, 10);	strcat(buf, line->elements[i].indent);
1414	if (*end) cfg->defaultImage = -1;	free(line->elements[i].indent);
1415	} else if (defaultLine->numElements >= 2) {	}
1416	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;
	}
1417
1418	if (entry){	line->elements[1].indent =
1419	cfg->defaultImage = i;	line->elements[line->numElements - 1].indent;
1420	}else{	line->elements[1].item = buf;
1421	cfg->defaultImage = -1;	line->numElements = 2;
1422	}	} else if (line->type == LT_MENUENTRY && line->numElements > 3) {
1423	}	/* let --remove-kernel="TITLE=what" work */
1424	} else {	len = 0;
1425	cfg->defaultImage = 0;	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	return cfg;	/* allocate mem for extra flags. */
1438	}	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	static void writeDefault(FILE * out, char * indent,	len = strlen(title);
1456	char * separator, struct grubConfig * cfg) {	if (title[len - 1] == quote_char) {
1457	struct singleEntry * entry;	strncat(buf, title, len - 1);
1458	struct singleLine * line;	break;
1459	int i;	} else {
1460		strcat(buf, title);
1461		strcat(buf, line->elements[i].indent);
1462		}
1463		}
1464
1465	if (!cfg->defaultImage && cfg->flags == GRUB_CONFIG_NO_DEFAULT) return;	/* 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 (cfg->defaultImage == DEFAULT_SAVED)	if (!strcmp
1476	fprintf(out, "%sdefault%ssaved\n", indent, separator);	(line->elements[i].item, "menuentry"))
1477	else if (cfg->defaultImage > -1) {	continue;
1478	if (cfg->cfi->defaultIsIndex) {
1479	fprintf(out, "%sdefault%s%d\n", indent, separator,	/* count ' or ", there should be two in menuentry line. */
1480	cfg->defaultImage);	if (isquote(*line->elements[i].item)
1481	} else {	&& quote_char == '\0') {
1482	int image = cfg->defaultImage;	/* ensure we properly pair off quotes */
1483		quote_char = *line->elements[i].item;
1484		count++;
1485		}
1486
1487	entry = cfg->entries;	len = strlen(line->elements[i].item);
	while (entry && entry->skip) entry = entry->next;
1488
1489	i = 0;	if (line->elements[i].item[len - 1] ==
1490	while (entry && i < image) {	quote_char)
1491	entry = entry->next;	count++;
1492
1493	while (entry && entry->skip) entry = entry->next;	/* ok, we get the final ' or ", others are extras. */
1494	i++;	}
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 (!entry) return;	if (isquote(*line->elements[1].item))
1511		memmove(line->elements[1].item,
1512		line->elements[1].item + 1,
1513		strlen(line->elements[1].item +
1514		1) + 1);
1515
1516		last = line->numElements - 1;
1517		len = strlen(line->elements[last].item) - 1;
1518		if (isquote(line->elements[last].item[len]))
1519		line->elements[last].item[len] = '\0';
1520		}
1521		}
1522
1523	line = getLineByType(LT_TITLE, entry->lines);	if (line->type == LT_DEFAULT && line->numElements == 2) {
1524		cfg->flags &= ~GRUB_CONFIG_NO_DEFAULT;
1525		defaultLine = line;
1526		}
1527
1528	if (line && line->numElements >= 2)	/* If we find a generic config option which should live at the
1529	fprintf(out, "%sdefault%s%s\n", indent, separator,	top of the file, move it there. Old versions of grubby were
1530	line->elements[1].item);	probably responsible for putting new images in the wrong
1531	else if (line && (line->numElements == 1) &&	place in front of it anyway. */
1532	cfg->cfi->titleBracketed) {	if (sawEntry && line->type == LT_GENERIC) {
1533	fprintf(out, "%sdefault%s%s\n", indent, separator,	struct singleLine **l = &cfg->theLines;
1534	extractTitle(line));	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 writeConfig(struct grubConfig * cfg, char * outName,	/* If a second line of whitespace happens after a generic
1547	const char * prefix) {	* option which was moved, drop it. */
1548	FILE * out;	if (movedLine && line->type == LT_WHITESPACE
1549	struct singleLine * line;	&& last->type == LT_WHITESPACE) {
1550	struct singleEntry * entry;	lineFree(line);
1551	char * tmpOutName;	free(line);
1552	int needs = MAIN_DEFAULT;	movedLine = 0;
1553	struct stat sb;	continue;
1554	int i;	}
1555		movedLine = 0;
	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;
	}
	}
	}
1556
1557	line = cfg->theLines;	if (sawEntry) {
1558	while (line) {	if (!entry->lines)
1559	if (line->type == LT_DEFAULT) {	entry->lines = line;
1560	writeDefault(out, line->indent, line->elements[0].indent, cfg);	else
1561	needs &= ~MAIN_DEFAULT;	last->next = line;
1562	} else if (line->type == LT_FALLBACK) {	dbgPrintf("readConfig added %s to %p\n",
1563	if (cfg->fallbackImage > -1)	getKeyByType(line->type, cfi), entry);
	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;
	}
	}
1564
1565	line = line->next;	/* we could have seen this outside of an entry... if
1566	}	* so, we ignore it like any other line we don't grok
1567		*/
1568		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	if (needs & MAIN_DEFAULT) {	last = line;
1580	writeDefault(out, cfg->primaryIndent, "=", cfg);	}
	needs &= ~MAIN_DEFAULT;
	}
1581
1582	i = 0;	free(incoming);
	while ((entry = findEntryByIndex(cfg, i++))) {
	if (entry->skip) continue;
1583
1584	line = entry->lines;	dbgPrintf("defaultLine is %s\n", defaultLine ? "set" : "unset");
1585	while (line) {	if (defaultLine) {
1586	if (lineWrite(out, line, cfg->cfi) == -1) {	if (defaultLine->numElements > 2 &&
1587	fprintf(stderr, _("grubby: error writing %s: %s\n"),	cfi->defaultSupportSaved &&
1588	tmpOutName, strerror(errno));	!strncmp(defaultLine->elements[2].item,
1589	fclose(out);	"\"${saved_entry}\"", 16)) {
1590	unlink(tmpOutName);	cfg->cfi->defaultIsSaved = 1;
1591	return 1;	cfg->defaultImage = DEFAULT_SAVED_GRUB2;
1592	}	if (cfg->cfi->getEnv) {
1593	line = line->next;	char *defTitle =
1594	}	cfi->getEnv(cfg->cfi, "saved_entry");
1595	}	if (defTitle) {
1596		int index = 0;
1597		if (isnumber(defTitle)) {
1598		index = atoi(defTitle);
1599		entry =
1600		findEntryByIndex(cfg,
1601		index);
1602		} else {
1603		entry =
1604		findEntryByTitle(cfg,
1605		defTitle,
1606		&index);
1607		}
1608		if (entry)
1609		cfg->defaultImage = index;
1610		}
1611		}
1612		} else if (cfi->defaultIsVariable) {
1613		if (defaultLine->numElements == 2) {
1614		char *value = defaultLine->elements[1].item + 8;
1615		while (*value && (*value == '"' ||
1616		*value == '\'' ||
1617		*value == ' ' ||
1618		*value == '\t'))
1619		value++;
1620		cfg->defaultImage = strtol(value, &end, 10);
1621		while (*end && (*end == '"' || *end == '\'' ||
1622		*end == ' ' || *end == '\t'))
1623		end++;
1624		if (*end)
1625		cfg->defaultImage = NO_DEFAULT_ENTRY;
1626		} else if (defaultLine->numElements == 3) {
1627		char *value = defaultLine->elements[2].item;
1628		while (*value && (*value == '"' ||
1629		*value == '\'' ||
1630		*value == ' ' ||
1631		*value == '\t'))
1632		value++;
1633		cfg->defaultImage = strtol(value, &end, 10);
1634		while (*end && (*end == '"' || *end == '\'' ||
1635		*end == ' ' || *end == '\t'))
1636		end++;
1637		if (*end)
1638		cfg->defaultImage = NO_DEFAULT_ENTRY;
1639		}
1640		} else if (cfi->defaultSupportSaved &&
1641		!strncmp(defaultLine->elements[1].item, "saved",
1642		5)) {
1643		cfg->defaultImage = DEFAULT_SAVED;
1644		} else if (cfi->defaultIsIndex) {
1645		cfg->defaultImage =
1646		strtol(defaultLine->elements[1].item, &end, 10);
1647		if (*end)
1648		cfg->defaultImage = NO_DEFAULT_ENTRY;
1649		} else if (defaultLine->numElements >= 2) {
1650		int i = 0;
1651		while ((entry = findEntryByIndex(cfg, i))) {
1652		for (line = entry->lines; line;
1653		line = line->next)
1654		if (line->type == LT_TITLE)
1655		break;
1656
1657		if (!cfi->titleBracketed) {
1658		if (line && (line->numElements >= 2) &&
1659		!strcmp(defaultLine->elements[1].
1660		item,
1661		line->elements[1].item))
1662		break;
1663		} else if (line) {
1664		if (!strcmp
1665		(defaultLine->elements[1].item,
1666		extractTitle(cfg, line)))
1667		break;
1668		}
1669		i++;
1670		entry = NULL;
1671		}
1672
1673	if (tmpOutName) {	if (entry) {
1674	if (rename(tmpOutName, outName)) {	cfg->defaultImage = i;
1675	fprintf(stderr, _("grubby: error moving %s to %s: %s\n"),	} else {
1676	tmpOutName, outName, strerror(errno));	cfg->defaultImage = NO_DEFAULT_ENTRY;
1677	unlink(outName);	}
1678	return 1;	}
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 {
1693		cfg->defaultImage = FIRST_ENTRY_INDEX;
1694	}	}
	}
	return 0;
	}
1695
1696	static int numEntries(struct grubConfig *cfg) {	return cfg;
	int i = 0;
	struct singleEntry * entry;
	entry = cfg->entries;
	while (entry) {
	if (!entry->skip)
	i++;
	entry = entry->next;
	}
	return i;
1697	}	}
1698
1699	static char *findDiskForRoot()	static void writeDefault(FILE * out, char *indent,
1700		char *separator, struct grubConfig *cfg)
1701	{	{
1702	int fd;	struct singleEntry *entry;
1703	char buf[65536];	struct singleLine *line;
1704	char *devname;	int i;
1705	char *chptr;
1706	int rc;	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		entry = findEntryByIndex(cfg, cfg->defaultImage);
1716		line = getLineByType(LT_MENUENTRY, entry->lines);
1717		if (!line)
1718		line = getLineByType(LT_TITLE, entry->lines);
1719		if (line) {
1720		title = extractTitle(cfg, line);
1721		if (title)
1722		cfg->cfi->setEnv(cfg->cfi,
1723		"saved_entry", title);
1724		}
1725		}
1726		} else if (cfg->defaultImage >= FIRST_ENTRY_INDEX) {
1727		if (cfg->cfi->defaultIsIndex) {
1728		if (cfg->cfi->defaultIsVariable) {
1729		fprintf(out, "%sset default=\"%d\"\n", indent,
1730		cfg->defaultImage);
1731		} else {
1732		fprintf(out, "%sdefault%s%d\n", indent,
1733		separator, cfg->defaultImage);
1734		}
1735		} else {
1736		int image = cfg->defaultImage;
1737
1738	if ((fd = open(_PATH_MOUNTED, O_RDONLY)) < 0) {	entry = cfg->entries;
1739	fprintf(stderr, "grubby: failed to open %s: %s\n",	while (entry && entry->skip)
1740	_PATH_MOUNTED, strerror(errno));	entry = entry->next;
1741	return NULL;
1742	}	i = 0;
1743		while (entry && i < image) {
1744		entry = entry->next;
1745
1746	rc = read(fd, buf, sizeof(buf) - 1);	while (entry && entry->skip)
1747	if (rc <= 0) {	entry = entry->next;
1748	fprintf(stderr, "grubby: failed to read %s: %s\n",	i++;
1749	_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++;
	}
1750
1751	return NULL;	if (!entry)
1752	}	return;
1753
1754	int suitableImage(struct singleEntry * entry, const char * bootPrefix,	line = getLineByType(LT_TITLE, entry->lines);
	int skipRemoved, int flags) {
	struct singleLine * line;
	char * fullName;
	int i;
	char * dev;
	char * rootspec;
	char * rootdev;
	if (skipRemoved && entry->skip) return 0;
	line = getLineByType(LT_KERNEL|LT_HYPER, entry->lines);
	if (!line || line->numElements < 2) return 0;
	if (flags & GRUBBY_BADIMAGE_OKAY) return 1;
	fullName = alloca(strlen(bootPrefix) +
	strlen(line->elements[1].item) + 1);
	rootspec = getRootSpecifier(line->elements[1].item);
	sprintf(fullName, "%s%s", bootPrefix,
	line->elements[1].item + (rootspec ? strlen(rootspec) : 0));
	if (access(fullName, R_OK)) return 0;
	for (i = 2; i < line->numElements; i++)
	if (!strncasecmp(line->elements[i].item, "root=", 5)) break;
	if (i < line->numElements) {
	dev = line->elements[i].item + 5;
	} else {
	/* look for a lilo style LT_ROOT line */
	line = getLineByType(LT_ROOT, entry->lines);
1755
1756	if (line && line->numElements >= 2) {	if (line && line->numElements >= 2)
1757	dev = line->elements[1].item;	fprintf(out, "%sdefault%s%s\n", indent,
1758	} else {	separator, line->elements[1].item);
1759	/* didn't succeed in finding a LT_ROOT, let's try LT_KERNELARGS.	else if (line && (line->numElements == 1)
1760	* grub+multiboot uses LT_MBMODULE for the args, so check that too.	&& cfg->cfi->titleBracketed) {
1761	*/	char *title = extractTitle(cfg, line);
1762	line = getLineByType(LT_KERNELARGS|LT_MBMODULE, entry->lines);	if (title) {
1763		fprintf(out, "%sdefault%s%s\n", indent,
1764	/* failed to find one */	separator, title);
1765	if (!line) return 0;	free(title);
1766		}
1767	for (i = 1; i < line->numElements; i++)	}
1768	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;
	}
1769	}	}
1770	}	}
	dev = getpathbyspec(dev);
	if (!dev)
	return 0;
	rootdev = findDiskForRoot();
	if (!rootdev)
	return 0;
	if (!getuuidbydev(rootdev) || !getuuidbydev(dev)) {
	free(rootdev);
	return 0;
	}
1771
1772	if (strcmp(getuuidbydev(rootdev), getuuidbydev(dev))) {	static int writeConfig(struct grubConfig *cfg, char *outName,
1773	free(rootdev);	const char *prefix)
1774	return 0;	{
1775	}	FILE *out;
1776		struct singleLine *line;
1777		struct singleEntry *entry;
1778		char *tmpOutName;
1779		int needs = MAIN_DEFAULT;
1780		struct stat sb;
1781		int i;
1782
1783		if (!strcmp(outName, "-")) {
1784		out = stdout;
1785		tmpOutName = NULL;
1786		} else {
1787		if (!lstat(outName, &sb) && S_ISLNK(sb.st_mode)) {
1788		char *buf;
1789		int len = 256;
1790		int rc;
1791
1792		/* most likely the symlink is relative, so change our
1793		directory to the dir of the symlink */
1794		char *dir = strdupa(outName);
1795		rc = chdir(dirname(dir));
1796		do {
1797		buf = alloca(len + 1);
1798		rc = readlink(basename(outName), buf, len);
1799		if (rc == len)
1800		len += 256;
1801		} while (rc == len);
1802
1803		if (rc < 0) {
1804		fprintf(stderr,
1805		_
1806		("grubby: error readlink link %s: %s\n"),
1807		outName, strerror(errno));
1808		return 1;
1809		}
1810
1811	free(rootdev);	outName = buf;
1812		outName[rc] = '\0';
1813		}
1814
1815	return 1;	tmpOutName = alloca(strlen(outName) + 2);
1816	}	sprintf(tmpOutName, "%s-", outName);
1817		out = fopen(tmpOutName, "w");
1818		if (!out) {
1819		fprintf(stderr, _("grubby: error creating %s: %s\n"),
1820		tmpOutName, strerror(errno));
1821		return 1;
1822		}
1823
1824	/* returns the first match on or after the one pointed to by index (if index	if (!stat(outName, &sb)) {
1825	is not NULL) which is not marked as skip */	if (chmod(tmpOutName, sb.st_mode & ~(S_IFMT))) {
1826	struct singleEntry * findEntryByPath(struct grubConfig * config,	fprintf(stderr,
1827	const char * kernel, const char * prefix,	_
1828	int * index) {	("grubby: error setting perms on %s: %s\n"),
1829	struct singleEntry * entry = NULL;	tmpOutName, strerror(errno));
1830	struct singleLine * line;	fclose(out);
1831	int i;	unlink(tmpOutName);
1832	char * chptr;	return 1;
1833	char * rootspec = NULL;	}
1834	enum lineType_e checkType = LT_KERNEL;	}
1835		}
1836
1837	if (isdigit(*kernel)) {	line = cfg->theLines;
1838	int * indexVars = alloca(sizeof(*indexVars) * strlen(kernel));	struct keywordTypes *defaultKw = getKeywordByType(LT_DEFAULT, cfg->cfi);
1839		while (line) {
1840		if (line->type == LT_SET_VARIABLE && defaultKw &&
1841		line->numElements == 3 &&
1842		!strcmp(line->elements[1].item, defaultKw->key) &&
1843		!is_special_grub2_variable(line->elements[2].item)) {
1844		writeDefault(out, line->indent,
1845		line->elements[0].indent, cfg);
1846		needs &= ~MAIN_DEFAULT;
1847		} else if (line->type == LT_DEFAULT) {
1848		writeDefault(out, line->indent,
1849		line->elements[0].indent, cfg);
1850		needs &= ~MAIN_DEFAULT;
1851		} else if (line->type == LT_FALLBACK) {
1852		if (cfg->fallbackImage > -1)
1853		fprintf(out, "%s%s%s%d\n", line->indent,
1854		line->elements[0].item,
1855		line->elements[0].indent,
1856		cfg->fallbackImage);
1857		} else {
1858		if (lineWrite(out, line, cfg->cfi) == -1) {
1859		fprintf(stderr,
1860		_("grubby: error writing %s: %s\n"),
1861		tmpOutName, strerror(errno));
1862		fclose(out);
1863		unlink(tmpOutName);
1864		return 1;
1865		}
1866		}
1867
1868	i = 0;	line = line->next;
	indexVars[i] = strtol(kernel, &chptr, 10);
	while (*chptr == ',') {
	i++;
	kernel = chptr + 1;
	indexVars[i] = strtol(kernel, &chptr, 10);
1869	}	}
1870
1871	if (*chptr) {	if (needs & MAIN_DEFAULT) {
1872	/* can't parse it, bail */	writeDefault(out, cfg->primaryIndent, "=", cfg);
1873	return NULL;	needs &= ~MAIN_DEFAULT;
1874	}	}
1875
	indexVars[i + 1] = -1;
1876	i = 0;	i = 0;
1877	if (index) {	while ((entry = findEntryByIndex(cfg, i++))) {
1878	while (i < *index) i++;	if (entry->skip)
1879	if (indexVars[i] == -1) return NULL;	continue;
1880
1881		line = entry->lines;
1882		while (line) {
1883		if (lineWrite(out, line, cfg->cfi) == -1) {
1884		fprintf(stderr,
1885		_("grubby: error writing %s: %s\n"),
1886		tmpOutName, strerror(errno));
1887		fclose(out);
1888		unlink(tmpOutName);
1889		return 1;
1890		}
1891		line = line->next;
1892		}
1893		}
1894
1895		if (tmpOutName) {
1896		if (rename(tmpOutName, outName)) {
1897		fprintf(stderr,
1898		_("grubby: error moving %s to %s: %s\n"),
1899		tmpOutName, outName, strerror(errno));
1900		unlink(outName);
1901		return 1;
1902		}
1903	}	}
1904
1905	entry = findEntryByIndex(config, indexVars[i]);	return 0;
1906	if (!entry) return NULL;	}
1907
1908	line = getLineByType(LT_KERNEL|LT_HYPER, entry->lines);	static int numEntries(struct grubConfig *cfg)
1909	if (!line) return NULL;	{
1910		int i = 0;
1911		struct singleEntry *entry;
1912
1913	if (index) *index = indexVars[i];	entry = cfg->entries;
1914	return entry;	while (entry) {
1915	}	if (!entry->skip)
1916		i++;
1917	if (!strcmp(kernel, "DEFAULT")) {	entry = entry->next;
	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;
1918	}	}
1919	} else if (!strcmp(kernel, "ALL")) {	return i;
1920	if (index)	}
	i = *index;
	else
	i = 0;
1921
1922	while ((entry = findEntryByIndex(config, i))) {	static char *findDiskForRoot()
1923	if (!entry->skip) break;	{
1924	i++;	int fd;
1925		char buf[65536];
1926		char *devname;
1927		char *chptr;
1928		int rc;
1929
1930		if ((fd = open(_PATH_MOUNTED, O_RDONLY)) < 0) {
1931		fprintf(stderr, "grubby: failed to open %s: %s\n",
1932		_PATH_MOUNTED, strerror(errno));
1933		return NULL;
1934		}
1935
1936		rc = read(fd, buf, sizeof(buf) - 1);
1937		if (rc <= 0) {
1938		fprintf(stderr, "grubby: failed to read %s: %s\n",
1939		_PATH_MOUNTED, strerror(errno));
1940		close(fd);
1941		return NULL;
1942	}	}
1943		close(fd);
1944		buf[rc] = '\0';
1945		chptr = buf;
1946
1947	if (entry && index)	char *foundanswer = NULL;
	*index = i;
	} else {
	if (index)
	i = *index;
	else
	i = 0;
	if (!strncmp(kernel, "TITLE=", 6)) {
	prefix = "";
	checkType = LT_TITLE;
	kernel += 6;
	}
1948
1949	for (entry = findEntryByIndex(config, i); entry; entry = entry->next, i++) {	while (chptr && chptr != buf + rc) {
1950	if (entry->skip) continue;	devname = chptr;
1951
1952	dbgPrintf("findEntryByPath looking for %d %s in %p\n", checkType, kernel, entry);	/*
1953		* The first column of a mtab entry is the device, but if the
1954		* entry is a special device it won't start with /, so move
1955		* on to the next line.
1956		*/
1957		if (*devname != '/') {
1958		chptr = strchr(chptr, '\n');
1959		if (chptr)
1960		chptr++;
1961		continue;
1962		}
1963
1964	/* check all the lines matching checkType */	/* Seek to the next space */
1965	for (line = entry->lines; line; line = line->next) {	chptr = strchr(chptr, ' ');
1966	line = getLineByType(entry->multiboot && checkType == LT_KERNEL ?	if (!chptr) {
1967	LT_KERNEL|LT_MBMODULE|LT_HYPER :	fprintf(stderr, "grubby: error parsing %s: %s\n",
1968	checkType, line);	_PATH_MOUNTED, strerror(errno));
1969	if (!line) break;  /* not found in this entry */	return NULL;
1970		}
1971
1972	if (line && line->numElements >= 2) {	/*
1973	rootspec = getRootSpecifier(line->elements[1].item);	* The second column of a mtab entry is the mount point, we
1974	if (!strcmp(line->elements[1].item +	* are looking for '/' obviously.
1975	((rootspec != NULL) ? strlen(rootspec) : 0),	*/
1976	kernel + strlen(prefix)))	if (*(++chptr) == '/' && *(++chptr) == ' ') {
1977	break;	/* remember the last / entry in mtab */
1978		foundanswer = devname;
1979	}	}
	}
1980
1981	/* make sure this entry has a kernel identifier; this skips	/* Next line */
1982	* non-Linux boot entries (could find netbsd etc, though, which is	chptr = strchr(chptr, '\n');
1983	* unfortunate)	if (chptr)
1984	*/	chptr++;
	if (line && getLineByType(LT_KERNEL|LT_HYPER, entry->lines))
	break; /* found 'im! */
1985	}	}
1986
1987	if (index) *index = i;	/* Return the last / entry found */
1988	}	if (foundanswer) {
1989		chptr = strchr(foundanswer, ' ');
1990		*chptr = '\0';
1991		return strdup(foundanswer);
1992		}
1993
1994	return entry;	return NULL;
1995	}	}
1996
1997	struct singleEntry * findEntryByIndex(struct grubConfig * cfg, int index) {	void printEntry(struct singleEntry *entry, FILE * f)
1998	struct singleEntry * entry;	{
1999		int i;
2000		struct singleLine *line;
2001
2002	entry = cfg->entries;	for (line = entry->lines; line; line = line->next) {
2003	while (index && entry) {	log_message(f, "DBG: %s", line->indent);
2004	entry = entry->next;	for (i = 0; i < line->numElements; i++) {
2005	index--;	/* Need to handle this, because we strip the quotes from
2006	}	* menuentry when read it. */
2007		if (line->type == LT_MENUENTRY && i == 1) {
2008		if (!isquote(*line->elements[i].item))
2009		log_message(f, "\'%s\'",
2010		line->elements[i].item);
2011		else
2012		log_message(f, "%s",
2013		line->elements[i].item);
2014		log_message(f, "%s", line->elements[i].indent);
2015
2016	return entry;	continue;
2017	}	}
2018
2019	/* Find a good template to use for the new kernel. An entry is	log_message(f, "%s%s",
2020	* good if the kernel and mkinitrd exist (even if the entry	line->elements[i].item,
2021	* is going to be removed). Try and use the default entry, but	line->elements[i].indent);
2022	* if that doesn't work just take the first. If we can't find one,	}
2023	* 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;
2024	}	}
2025	}	}
2026
2027		void notSuitablePrintf(struct singleEntry *entry, int okay, const char *fmt,
2028		...)
2029		{
2030		static int once;
2031		va_list argp, argq;
2032
2033	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;
2034
2035	return entry;	va_copy(argq, argp);
2036		if (!once) {
2037		log_time(NULL);
2038		log_message(NULL, "command line: %s\n", saved_command_line);
2039	}	}
2040		log_message(NULL, "DBG: Image entry %s: ",
2041		okay ? "succeeded" : "failed");
2042		log_vmessage(NULL, fmt, argq);
2043
2044	index++;	printEntry(entry, NULL);
2045	}	va_end(argq);
2046
2047		if (!debug) {
2048		once = 1;
2049		va_end(argp);
2050		return;
2051		}
2052
2053	fprintf(stderr, _("grubby fatal error: unable to find a suitable template\n"));	if (okay) {
2054		va_end(argp);
2055		return;
2056		}
2057
2058	return NULL;	if (!once)
2059		log_message(stderr, "DBG: command line: %s\n",
2060		saved_command_line);
2061		once = 1;
2062		fprintf(stderr, "DBG: Image entry failed: ");
2063		vfprintf(stderr, fmt, argp);
2064		printEntry(entry, stderr);
2065		va_end(argp);
2066	}	}
2067
2068	char * findBootPrefix(void) {	#define beginswith(s, c) ((s) && (s)[0] == (c))
	struct stat sb, sb2;
2069
2070	stat("/", &sb);	static int endswith(const char *s, char c)
2071	#ifdef __ia64__	{
2072	stat("/boot/efi/EFI/redhat/", &sb2);	int slen;
	#else
	stat("/boot", &sb2);
	#endif
2073
2074	if (sb.st_dev == sb2.st_dev)	if (!s || !s[0])
2075	return strdup("");	return 0;
2076		slen = strlen(s) - 1;
2077
2078	#ifdef __ia64__	return s[slen] == c;
	return strdup("/boot/efi/EFI/redhat/");
	#else
	return strdup("/boot");
	#endif
2079	}	}
2080
2081	void markRemovedImage(struct grubConfig * cfg, const char * image,	int suitableImage(struct singleEntry *entry, const char *bootPrefix,
2082	const char * prefix) {	int skipRemoved, int flags)
2083	struct singleEntry * entry;	{
2084		struct singleLine *line;
2085	if (!image) return;	char *fullName;
2086		int i;
2087	while ((entry = findEntryByPath(cfg, image, prefix, NULL)))	char *dev;
2088	entry->skip = 1;	char *rootspec;
2089	}	char *rootdev;
2090
2091	void setDefaultImage(struct grubConfig * config, int hasNew,	if (skipRemoved && entry->skip) {
2092	const char * defaultKernelPath, int newIsDefault,	notSuitablePrintf(entry, 0, "marked to skip\n");
2093	const char * prefix, int flags) {	return 0;
2094	struct singleEntry * entry, * entry2, * newDefault;	}
2095	int i, j;
2096		line =
2097	if (newIsDefault) {	getLineByType(LT_KERNEL | LT_HYPER | LT_KERNEL_EFI | LT_KERNEL_16,
2098	config->defaultImage = 0;	entry->lines);
2099	return;	if (!line) {
2100	} else if (defaultKernelPath) {	notSuitablePrintf(entry, 0, "no line found\n");
2101	i = 0;	return 0;
2102	if (findEntryByPath(config, defaultKernelPath, prefix, &i)) {	}
2103	config->defaultImage = i;	if (line->numElements < 2) {
2104	} else {	notSuitablePrintf(entry, 0, "line has only %d elements\n",
2105	config->defaultImage = -1;	line->numElements);
2106	return;	return 0;
2107	}	}
	}
2108
2109	/* defaultImage now points to what we'd like to use, but before any order	if (flags & GRUBBY_BADIMAGE_OKAY) {
2110	changes */	notSuitablePrintf(entry, 1, "\n");
2111	if (config->defaultImage == DEFAULT_SAVED)	return 1;
2112	/* 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;
2113
2114	if (entry && !entry->skip) {	fullName = alloca(strlen(bootPrefix) +
2115	/* we can preserve the default */	strlen(line->elements[1].item) + 1);
2116	if (hasNew)	rootspec = getRootSpecifier(line->elements[1].item);
2117	config->defaultImage++;	int rootspec_offset = rootspec ? strlen(rootspec) : 0;
2118		int hasslash = endswith(bootPrefix, '/') ||
2119	/* count the number of entries erased before this one */	beginswith(line->elements[1].item + rootspec_offset, '/');
2120	for (j = 0; j < config->defaultImage; j++) {	sprintf(fullName, "%s%s%s", bootPrefix, hasslash ? "" : "/",
2121	entry2 = findEntryByIndex(config, j);	line->elements[1].item + rootspec_offset);
2122	if (entry2->skip) config->defaultImage--;	if (access(fullName, R_OK)) {
2123	}	notSuitablePrintf(entry, 0, "access to %s failed\n", fullName);
2124	} else if (hasNew) {	return 0;
2125	config->defaultImage = 0;	}
2126	} else {	for (i = 2; i < line->numElements; i++)
2127	/* Either we just erased the default (or the default line was bad	if (!strncasecmp(line->elements[i].item, "root=", 5))
2128	* to begin with) and didn't put a new one in. We'll use the first	break;
2129	* valid image. */	if (i < line->numElements) {
2130	newDefault = findTemplate(config, prefix, &config->defaultImage, 1,	dev = line->elements[i].item + 5;
2131	flags);	} else {
2132	if (!newDefault)	/* look for a lilo style LT_ROOT line */
2133	config->defaultImage = -1;	line = getLineByType(LT_ROOT, entry->lines);
	}
	}
2134
2135	void setFallbackImage(struct grubConfig * config, int hasNew) {	if (line && line->numElements >= 2) {
2136	struct singleEntry * entry, * entry2;	dev = line->elements[1].item;
2137	int j;	} else {
2138		/* didn't succeed in finding a LT_ROOT, let's try
2139	if (config->fallbackImage == -1) return;	* LT_KERNELARGS.  grub+multiboot uses LT_MBMODULE
2140		* for the args, so check that too.
2141	entry = findEntryByIndex(config, config->fallbackImage);	*/
2142	if (!entry || entry->skip) {	line =
2143	config->fallbackImage = -1;	getLineByType(LT_KERNELARGS | LT_MBMODULE,
2144	return;	entry->lines);
2145	}
2146		/* failed to find one */
2147		if (!line) {
2148		notSuitablePrintf(entry, 0, "no line found\n");
2149		return 0;
2150		}
2151
2152	if (hasNew)	for (i = 1; i < line->numElements; i++)
2153	config->fallbackImage++;	if (!strncasecmp
2154		(line->elements[i].item, "root=", 5))
2155	/* count the number of entries erased before this one */	break;
2156	for (j = 0; j < config->fallbackImage; j++) {	if (i < line->numElements)
2157	entry2 = findEntryByIndex(config, j);	dev = line->elements[i].item + 5;
2158	if (entry2->skip) config->fallbackImage--;	else {
2159	}	notSuitablePrintf(entry, 0,
2160		"no root= entry found\n");
2161		/* it failed too...  can't find root= */
2162		return 0;
2163		}
2164		}
2165		}
2166
2167		dev = getpathbyspec(dev);
2168		if (!getpathbyspec(dev)) {
2169		notSuitablePrintf(entry, 0, "can't find blkid entry for %s\n",
2170		dev);
2171		return 0;
2172		} else
2173		dev = getpathbyspec(dev);
2174
2175		rootdev = findDiskForRoot();
2176		if (!rootdev) {
2177		notSuitablePrintf(entry, 0, "can't find root device\n");
2178		return 0;
2179		}
2180
2181		if (!getuuidbydev(rootdev) || !getuuidbydev(dev)) {
2182		notSuitablePrintf(entry, 0,
2183		"uuid missing: rootdev %s, dev %s\n",
2184		getuuidbydev(rootdev), getuuidbydev(dev));
2185		free(rootdev);
2186		return 0;
2187		}
2188
2189		if (strcmp(getuuidbydev(rootdev), getuuidbydev(dev))) {
2190		notSuitablePrintf(entry, 0,
2191		"uuid mismatch: rootdev %s, dev %s\n",
2192		getuuidbydev(rootdev), getuuidbydev(dev));
2193		free(rootdev);
2194		return 0;
2195		}
2196
2197		free(rootdev);
2198		notSuitablePrintf(entry, 1, "\n");
2199
2200		return 1;
2201	}	}
2202
2203	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
2204	struct singleLine * line;	is not NULL) which is not marked as skip */
2205	char * root = NULL;	struct singleEntry *findEntryByPath(struct grubConfig *config,
2206	int i;	const char *kernel, const char *prefix,
2207		int *index)
2208	printf("index=%d\n", index);	{
2209		struct singleEntry *entry = NULL;
2210	line = getLineByType(LT_KERNEL|LT_HYPER, entry->lines);	struct singleLine *line;
2211	if (!line) {	int i;
2212	printf("non linux entry\n");	char *chptr;
2213	return;	char *rootspec = NULL;
2214	}	enum lineType_e checkType = LT_KERNEL;
2215
2216		if (isdigit(*kernel)) {
2217		int *indexVars = alloca(sizeof(*indexVars) * strlen(kernel));
2218
2219		i = 0;
2220		indexVars[i] = strtol(kernel, &chptr, 10);
2221		while (*chptr == ',') {
2222		i++;
2223		kernel = chptr + 1;
2224		indexVars[i] = strtol(kernel, &chptr, 10);
2225		}
2226
2227	printf("kernel=%s\n", line->elements[1].item);	if (*chptr) {
2228		/* can't parse it, bail */
2229		return NULL;
2230		}
2231
2232	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);
	}
2233
2234	i++;	i = 0;
2235	}	if (index) {
2236	printf("\"\n");	while (i < *index) {
2237	} else {	i++;
2238	line = getLineByType(LT_KERNELARGS, entry->lines);	if (indexVars[i] == -1)
2239	if (line) {	return NULL;
2240	char * s;	}
2241		}
2242
2243	printf("args=\"");	entry = findEntryByIndex(config, indexVars[i]);
2244	i = 1;	if (!entry)
2245	while (i < line->numElements) {	return NULL;
2246	if (!strncmp(line->elements[i].item, "root=", 5)) {
2247	root = line->elements[i].item + 5;	line =
2248		getLineByType(LT_KERNEL | LT_HYPER | LT_KERNEL_EFI |
2249		LT_KERNEL_16, entry->lines);
2250		if (!line)
2251		return NULL;
2252
2253		if (index)
2254		*index = indexVars[i];
2255		return entry;
2256		}
2257
2258		if (!strcmp(kernel, "DEFAULT")) {
2259		if (index && *index > config->defaultImage) {
2260		entry = NULL;
2261	} else {	} else {
2262	s = line->elements[i].item;	entry = findEntryByIndex(config, config->defaultImage);
2263		if (entry && entry->skip)
2264		entry = NULL;
2265		else if (index)
2266		*index = config->defaultImage;
2267		}
2268		} else if (!strcmp(kernel, "ALL")) {
2269		if (index)
2270		i = *index;
2271		else
2272		i = 0;
2273
2274		while ((entry = findEntryByIndex(config, i))) {
2275		if (!entry->skip)
2276		break;
2277		i++;
2278		}
2279
2280	printf("%s%s", s, line->elements[i].indent);	if (entry && index)
2281		*index = i;
2282		} else {
2283		if (index)
2284		i = *index;
2285		else
2286		i = 0;
2287
2288		if (!strncmp(kernel, "TITLE=", 6)) {
2289		prefix = "";
2290		checkType = LT_TITLE | LT_MENUENTRY;
2291		kernel += 6;
2292	}	}
2293
2294	i++;	for (entry = findEntryByIndex(config, i); entry;
2295	}	entry = entry->next, i++) {
2296		if (entry->skip)
2297		continue;
2298
2299		dbgPrintf("findEntryByPath looking for %d %s in %p\n",
2300		checkType, kernel, entry);
2301
2302		/* check all the lines matching checkType */
2303		for (line = entry->lines; line; line = line->next) {
2304		enum lineType_e ct = checkType;
2305		if (entry->multiboot && checkType == LT_KERNEL)
2306		ct = LT_KERNEL | LT_KERNEL_EFI |
2307		LT_MBMODULE | LT_HYPER |
2308		LT_KERNEL_16;
2309		else if (checkType & LT_KERNEL)
2310		ct = checkType | LT_KERNEL_EFI |
2311		LT_KERNEL_16;
2312		line = getLineByType(ct, line);
2313		if (!line)
2314		break; /* not found in this entry */
2315
2316		if (line && line->type != LT_MENUENTRY &&
2317		line->numElements >= 2) {
2318		rootspec =
2319		getRootSpecifier(line->elements[1].
2320		item);
2321		if (!strcmp
2322		(line->elements[1].item +
2323		((rootspec !=
2324		NULL) ? strlen(rootspec) : 0),
2325		kernel + strlen(prefix)))
2326		break;
2327		}
2328		if (line->type == LT_MENUENTRY &&
2329		!strcmp(line->elements[1].item, kernel))
2330		break;
2331		}
2332
2333		/* make sure this entry has a kernel identifier; this skips
2334		* non-Linux boot entries (could find netbsd etc, though, which is
2335		* unfortunate)
2336		*/
2337		if (line
2338		&& getLineByType(LT_KERNEL | LT_HYPER |
2339		LT_KERNEL_EFI | LT_KERNEL_16,
2340		entry->lines))
2341		break; /* found 'im! */
2342		}
2343
2344	s = line->elements[i - 1].indent;	if (index)
2345	printf("\"\n");	*index = i;
2346	}	}
	}
2347
2348	if (!root) {	return entry;
2349	line = getLineByType(LT_ROOT, entry->lines);	}
	if (line && line->numElements >= 2)
	root=line->elements[1].item;
	}
2350
2351	if (root) {	struct singleEntry *findEntryByTitle(struct grubConfig *cfg, char *title,
2352	char * s = alloca(strlen(root) + 1);	int *index)
2353		{
2354	strcpy(s, root);	struct singleEntry *entry;
2355	if (s[strlen(s) - 1] == '"')	struct singleLine *line;
2356	s[strlen(s) - 1] = '\0';	int i;
2357	/* make sure the root doesn't have a trailing " */	char *newtitle;
2358	printf("root=%s\n", s);
2359	}	for (i = 0, entry = cfg->entries; entry; entry = entry->next, i++) {
2360		if (index && i < *index)
2361		continue;
2362		line = getLineByType(LT_TITLE, entry->lines);
2363		if (!line)
2364		line = getLineByType(LT_MENUENTRY, entry->lines);
2365		if (!line)
2366		continue;
2367		newtitle = grub2ExtractTitle(line);
2368		if (!newtitle)
2369		continue;
2370		if (!strcmp(title, newtitle))
2371		break;
2372		}
2373
2374	line = getLineByType(LT_INITRD, entry->lines);	if (!entry)
2375		return NULL;
2376
2377	if (line && line->numElements >= 2) {	if (index)
2378	printf("initrd=%s", prefix);	*index = i;
2379	for (i = 1; i < line->numElements; i++)	return entry;
	printf("%s%s", line->elements[i].item, line->elements[i].indent);
	printf("\n");
	}
2380	}	}
2381
2382	int parseSysconfigGrub(int * lbaPtr, char ** bootPtr) {	struct singleEntry *findEntryByIndex(struct grubConfig *cfg, int index)
2383	FILE * in;	{
2384	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);
2385
2386	return 0;	entry = cfg->entries;
2387	}	while (index && entry) {
2388		entry = entry->next;
2389		index--;
2390		}
2391
2392	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);
	}
2393	}	}
2394
2395	int displayInfo(struct grubConfig * config, char * kernel,	/* Find a good template to use for the new kernel. An entry is
2396	const char * prefix) {	* good if the kernel and mkinitrd exist (even if the entry
2397	int i = 0;	* is going to be removed). Try and use the default entry, but
2398	struct singleEntry * entry;	* if that doesn't work just take the first. If we can't find one,
2399	struct singleLine * line;	* bail. */
2400		struct singleEntry *findTemplate(struct grubConfig *cfg, const char *prefix,
2401	entry = findEntryByPath(config, kernel, prefix, &i);	int *indexPtr, int skipRemoved, int flags)
2402	if (!entry) {	{
2403	fprintf(stderr, _("grubby: kernel not found\n"));	struct singleEntry *entry, *entry2;
2404	return 1;	int index;
	}
2405
2406	/* this is a horrible hack to support /etc/conf.d/grub; there must	if (cfg->cfi->defaultIsSaved) {
2407	be a better way */	if (cfg->cfi->getEnv) {
2408	if (config->cfi == &grubConfigType) {	char *defTitle =
2409	dumpSysconfigGrub();	cfg->cfi->getEnv(cfg->cfi, "saved_entry");
2410	} else {	if (defTitle) {
2411	line = getLineByType(LT_BOOT, config->theLines);	int index = 0;
2412	if (line && line->numElements >= 1) {	if (isnumber(defTitle)) {
2413	printf("boot=%s\n", line->elements[1].item);	index = atoi(defTitle);
2414		entry = findEntryByIndex(cfg, index);
2415		} else {
2416		entry =
2417		findEntryByTitle(cfg, defTitle,
2418		&index);
2419		}
2420		if (entry
2421		&& suitableImage(entry, prefix, skipRemoved,
2422		flags)) {
2423		cfg->defaultImage = index;
2424		if (indexPtr)
2425		*indexPtr = index;
2426		return entry;
2427		}
2428		}
2429		}
2430		} else if (cfg->defaultImage >= FIRST_ENTRY_INDEX) {
2431		entry = findEntryByIndex(cfg, cfg->defaultImage);
2432		if (entry && suitableImage(entry, prefix, skipRemoved, flags)) {
2433		if (indexPtr)
2434		*indexPtr = cfg->defaultImage;
2435		return entry;
2436		}
2437	}	}
2438
2439	line = getLineByType(LT_LBA, config->theLines);	index = 0;
2440	if (line) printf("lba\n");	while ((entry = findEntryByIndex(cfg, index))) {
2441	}	if (suitableImage(entry, prefix, skipRemoved, flags)) {
2442		int j;
2443	displayEntry(entry, prefix, i);	for (j = 0; j < index; j++) {
2444		entry2 = findEntryByIndex(cfg, j);
2445	i++;	if (entry2->skip)
2446	while ((entry = findEntryByPath(config, kernel, prefix, &i))) {	index--;
2447	displayEntry(entry, prefix, i);	}
2448	i++;	if (indexPtr)
2449	}	*indexPtr = index;
2450
2451	return 0;	return entry;
2452	}	}
2453
2454	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);
	}
2455	}	}
	}
	dbgPrintf("addLineTmpl(%s)\n", newLine->numElements ?
	newLine->elements[0].item : "");
2456
2457	if (!entry->lines) {	fprintf(stderr,
2458	/* first one on the list */	_("grubby fatal error: unable to find a suitable template\n"));
	entry->lines = newLine;
	} else if (prevLine) {
	/* add after prevLine */
	newLine->next = prevLine->next;
	prevLine->next = newLine;
	}
2459
2460	return newLine;	return NULL;
2461	}	}
2462
2463	/* val may be NULL */	char *findBootPrefix(void)
2464	struct singleLine *  addLine(struct singleEntry * entry,	{
2465	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 = "";
	}
	}
2466
2467	/* The last non-empty line gives us the indention to us and the line	stat("/", &sb);
2468	to insert after. Note that comments are considered empty lines, which	#ifdef __ia64__
2469	may not be ideal? If there are no lines or we are looking at the	stat("/boot/efi/EFI/redhat/", &sb2);
2470	first line, we use defaultIndent (the first line is normally indented	#else
2471	differently from the rest) */	stat("/boot", &sb2);
2472	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;
	}
2473
2474	if (prev == entry->lines)	if (sb.st_dev == sb2.st_dev)
2475	tmpl.indent = defaultIndent ?: "";	return strdup("");
	else
	tmpl.indent = prev->indent;
2476
2477	return addLineTmpl(entry, &tmpl, prev, val, cfi);	#ifdef __ia64__
2478		return strdup("/boot/efi/EFI/redhat/");
2479		#else
2480		return strdup("/boot");
2481		#endif
2482	}	}
2483
2484	void removeLine(struct singleEntry * entry, struct singleLine * line) {	void markRemovedImage(struct grubConfig *cfg, const char *image,
2485	struct singleLine * prev;	const char *prefix)
2486	int i;	{
2487		struct singleEntry *entry;
2488
2489	for (i = 0; i < line->numElements; i++) {	if (!image)
2490	free(line->elements[i].item);	return;
	free(line->elements[i].indent);
	}
	free(line->elements);
	free(line->indent);
2491
2492	if (line == entry->lines) {	/* check and see if we're removing the default image */
2493	entry->lines = line->next;	if (isdigit(*image)) {
2494	} else {	entry = findEntryByPath(cfg, image, prefix, NULL);
2495	prev = entry->lines;	if (entry)
2496	while (prev->next != line) prev = prev->next;	entry->skip = 1;
2497	prev->next = line->next;	return;
2498	}	}
2499
2500	free(line);	while ((entry = findEntryByPath(cfg, image, prefix, NULL)))
2501		entry->skip = 1;
2502	}	}
2503
2504	static void insertElement(struct singleLine * line,	void setDefaultImage(struct grubConfig *config, int isAddingBootEntry,
2505	const char * item, int insertHere,	const char *defaultKernelPath, int newBootEntryIsDefault,
2506	struct configFileInfo * cfi)	const char *prefix, int flags,
2507		int newDefaultBootEntryIndex, int newBootEntryIndex)
2508	{	{
2509	struct keywordTypes * kw;	struct singleEntry *bootEntry, *newDefault;
2510	char indent[2] = "";	int indexToVerify, firstKernelEntryIndex, currentLookupIndex;
2511
2512	/* sanity check */	/* handle the two cases where the user explictly picks the default
2513	if (insertHere > line->numElements) {	* boot entry index as it would exist post-modification */
	dbgPrintf("insertElement() adjusting insertHere from %d to %d\n",
	insertHere, line->numElements);
	insertHere = line->numElements;
	}
2514
2515	line->elements = realloc(line->elements, (line->numElements + 1) *	/* Case 1: user chose to make the latest boot entry the default */
2516	sizeof(*line->elements));	if (newBootEntryIsDefault) {
2517	memmove(&line->elements[insertHere+1],	config->defaultImage = newBootEntryIndex;
2518	&line->elements[insertHere],	return;
2519	(line->numElements - insertHere) *	}
2520	sizeof(*line->elements));
2521	line->elements[insertHere].item = strdup(item);	/* Case 2: user picked an arbitrary index as the default boot entry */
2522		if (newDefaultBootEntryIndex >= FIRST_ENTRY_INDEX
2523	kw = getKeywordByType(line->type, cfi);	&& config->cfi->defaultIsIndex) {
2524		indexToVerify = newDefaultBootEntryIndex;
2525	if (line->numElements == 0) {
2526	indent[0] = '\0';	/* user chose to make latest boot entry the default */
2527	} else if (insertHere == 0) {	if (newDefaultBootEntryIndex == newBootEntryIndex) {
2528	indent[0] = kw->nextChar;	config->defaultImage = newBootEntryIndex;
2529	} else if (kw->separatorChar != '\0') {	return;
2530	indent[0] = kw->separatorChar;	}
	} else {
	indent[0] = ' ';
	}
2531
2532	if (insertHere > 0 && line->elements[insertHere-1].indent[0] == '\0') {	/* the user picks the default index based on the
2533	/* move the end-of-line forward */	* order of the bootloader configuration after
2534	line->elements[insertHere].indent =	* modification; ensure we are checking for the
2535	line->elements[insertHere-1].indent;	* existence of the correct entry */
2536	line->elements[insertHere-1].indent = strdup(indent);	if (newBootEntryIndex < newDefaultBootEntryIndex) {
2537	} else {	if (!config->isModified)
2538	line->elements[insertHere].indent = strdup(indent);	indexToVerify--;
2539	}	}
2540
2541	line->numElements++;	/* verify the user selected index will exist */
2542		if (findEntryByIndex(config, indexToVerify)) {
2543		config->defaultImage = newDefaultBootEntryIndex;
2544		} else {
2545		config->defaultImage = NO_DEFAULT_ENTRY;
2546		}
2547
2548	dbgPrintf("insertElement(%s, '%s%s', %d)\n",	return;
2549	line->elements[0].item,	}
	line->elements[insertHere].item,
	line->elements[insertHere].indent,
	insertHere);
	}
2550
2551	static void removeElement(struct singleLine * line, int removeHere) {	/* handle cases where the index value may shift */
	int i;
2552
2553	/* sanity check */	/* check validity of existing default or first-entry-found
2554	if (removeHere >= line->numElements) return;	selection */
2555		if (defaultKernelPath) {
2556		/* user requested first-entry-found */
2557		if (!findEntryByPath(config, defaultKernelPath,
2558		prefix, &firstKernelEntryIndex)) {
2559		/* don't change default if can't find match */
2560		config->defaultImage = NO_DEFAULT_ENTRY;
2561		return;
2562		}
2563
2564	dbgPrintf("removeElement(%s, %d:%s)\n", line->elements[0].item,	config->defaultImage = firstKernelEntryIndex;
	removeHere, line->elements[removeHere].item);
2565
2566	free(line->elements[removeHere].item);	/* this is where we start looking for decrement later */
2567		currentLookupIndex = config->defaultImage;
2568
2569	if (removeHere > 1) {	if (isAddingBootEntry && !config->isModified &&
2570	/* previous argument gets this argument's post-indentation */	(newBootEntryIndex < config->defaultImage)) {
2571	free(line->elements[removeHere-1].indent);	/* increment because new entry added before default */
2572	line->elements[removeHere-1].indent =	config->defaultImage++;
2573	line->elements[removeHere].indent;	}
2574	} else {	} else {
2575	free(line->elements[removeHere].indent);	/* use pre-existing default entry */
2576	}	currentLookupIndex = config->defaultImage;
2577
2578	/* now collapse the array, but don't bother to realloc smaller */	if (isAddingBootEntry
2579	for (i = removeHere; i < line->numElements - 1; i++)	&& (newBootEntryIndex <= config->defaultImage)) {
2580	line->elements[i] = line->elements[i + 1];	config->defaultImage++;
	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;
	}
	}
2581
2582	if (!removeArgs) {	if (config->isModified) {
2583	oldArgs = malloc(sizeof(*oldArgs));	currentLookupIndex++;
2584	*oldArgs = NULL;	}
2585	} else {	}
	if (poptParseArgvString(removeArgs, NULL, &oldArgs)) {
	fprintf(stderr,
	_("grubby: error separating arguments '%s'\n"), removeArgs);
	free(newArgs);
	return 1;
2586	}	}
	}
2587
2588		/* sanity check - is this entry index valid? */
2589		bootEntry = findEntryByIndex(config, currentLookupIndex);
2590
2591	useKernelArgs = (getKeywordByType(LT_KERNELARGS, cfg->cfi)	if ((bootEntry && bootEntry->skip) || !bootEntry) {
2592	&& (!multibootArgs || cfg->cfi->mbConcatArgs));	/* entry is to be skipped or is invalid */
2593		if (isAddingBootEntry) {
2594	useRoot = (getKeywordByType(LT_ROOT, cfg->cfi)	config->defaultImage = newBootEntryIndex;
2595	&& !multibootArgs);	return;
2596		}
2597		newDefault =
2598		findTemplate(config, prefix, &config->defaultImage, 1,
2599		flags);
2600		if (!newDefault) {
2601		config->defaultImage = NO_DEFAULT_ENTRY;
2602		}
2603
2604	for (; (entry = findEntryByPath(cfg, image, prefix, &index)); index++) {	return;
2605		}
2606
2607	if (multibootArgs && !entry->multiboot)	currentLookupIndex--;
	continue;
2608
2609	/* Determine where to put the args.  If this config supports	/* decrement index by the total number of entries deleted */
	* LT_KERNELARGS, use that.  Otherwise use
	* LT_HYPER/LT_KERNEL/LT_MBMODULE lines.
	*/
	if (useKernelArgs) {
	line = getLineByType(LT_KERNELARGS, entry->lines);
	if (!line) {
	/* no LT_KERNELARGS, need to add it */
	line = addLine(entry, cfg->cfi, LT_KERNELARGS,
	cfg->secondaryIndent, NULL);
	}
	firstElement = 1;
	} else if (multibootArgs) {
	line = getLineByType(LT_HYPER, entry->lines);
	if (!line) {
	/* a multiboot entry without LT_HYPER? */
	continue;
	}
	firstElement = 2;
	} else {
	line = getLineByType(LT_KERNEL|LT_MBMODULE, entry->lines);
	if (!line) {
	/* no LT_KERNEL or LT_MBMODULE in this entry? */
	continue;
	}
	firstElement = 2;
	}
2610
2611	/* handle the elilo case which does:	for (indexToVerify = currentLookupIndex;
2612	*   append="hypervisor args -- kernel args"	indexToVerify >= FIRST_ENTRY_INDEX; indexToVerify--) {
	*/
	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;
	}
	}
2613
2614	if (i < line->numElements && doreplace) {	bootEntry = findEntryByIndex(config, indexToVerify);
	/* direct replacement */
	free(line->elements[i].item);
	line->elements[i].item = strdup(*arg);
2615
2616	} else if (useRoot && !strncmp(*arg, "root=/dev/", 10)) {	if (bootEntry && bootEntry->skip) {
2617	/* root= replacement */	config->defaultImage--;
	rootLine = getLineByType(LT_ROOT, entry->lines);
	if (rootLine) {
	free(rootLine->elements[1].item);
	rootLine->elements[1].item = strdup(*arg + 5);
	} else {
	rootLine = addLine(entry, cfg->cfi, LT_ROOT,
	cfg->secondaryIndent, *arg + 5);
2618	}	}
	}
	else {
	/* 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);
2619	}	}
2620	}	}
2621
2622	free(newArgs);	void setFallbackImage(struct grubConfig *config, int hasNew)
2623	free(oldArgs);	{
2624		struct singleEntry *entry, *entry2;
2625		int j;
2626
2627	return 0;	if (config->fallbackImage == -1)
2628	}	return;
2629
2630	int updateImage(struct grubConfig * cfg, const char * image,	entry = findEntryByIndex(config, config->fallbackImage);
2631	const char * prefix, const char * addArgs,	if (!entry || entry->skip) {
2632	const char * removeArgs,	config->fallbackImage = -1;
2633	const char * addMBArgs, const char * removeMBArgs) {	return;
2634	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;
	}
2635
2636	return 0;	if (hasNew)
2637		config->fallbackImage++;
2638
2639		/* count the number of entries erased before this one */
2640		for (j = 0; j < config->fallbackImage; j++) {
2641		entry2 = findEntryByIndex(config, j);
2642		if (entry2->skip)
2643		config->fallbackImage--;
2644		}
2645	}	}
2646
2647	int checkDeviceBootloader(const char * device, const unsigned char * boot) {	void displayEntry(struct singleEntry *entry, const char *prefix, int index)
2648	int fd;	{
2649	unsigned char bootSect[512];	struct singleLine *line;
2650	int offset;	char *root = NULL;
2651		int i;
2652	fd = open(device, O_RDONLY);	int j;
	if (fd < 0) {
	fprintf(stderr, _("grubby: unable to open %s: %s\n"),
	device, strerror(errno));
	return 1;
	}
2653
2654	if (read(fd, bootSect, 512) != 512) {	printf("index=%d\n", index);
	fprintf(stderr, _("grubby: unable to read %s: %s\n"),
	device, strerror(errno));
	return 1;
	}
	close(fd);
2655
2656	/* first three bytes should match, a jmp short should be in there */	line =
2657	if (memcmp(boot, bootSect, 3))	getLineByType(LT_KERNEL | LT_HYPER | LT_KERNEL_EFI | LT_KERNEL_16,
2658	return 0;	entry->lines);
2659		if (!line) {
2660		printf("non linux entry\n");
2661		return;
2662		}
2663
2664	if (boot[1] == 0xeb) {	if (!strncmp(prefix, line->elements[1].item, strlen(prefix)))
2665	offset = boot[2] + 2;	printf("kernel=%s\n", line->elements[1].item);
2666	} else if (boot[1] == 0xe8 || boot[1] == 0xe9) {	else
2667	offset = (boot[3] << 8) + boot[2] + 2;	printf("kernel=%s%s\n", prefix, line->elements[1].item);
	} else if (boot[0] == 0xeb) {
	offset = boot[1] + 2;
	} else if (boot[0] == 0xe8 || boot[0] == 0xe9) {
	offset = (boot[2] << 8) + boot[1] + 2;
	} else {
	return 0;
	}
2668
2669	if (memcmp(boot + offset, bootSect + offset, CODE_SEG_SIZE))	if (line->numElements >= 3) {
2670	return 0;	printf("args=\"");
2671		i = 2;
2672		while (i < line->numElements) {
2673		if (!strncmp(line->elements[i].item, "root=", 5)) {
2674		root = line->elements[i].item + 5;
2675		} else {
2676		printf("%s%s", line->elements[i].item,
2677		line->elements[i].indent);
2678		}
2679
2680	return 2;	i++;
2681	}	}
2682		printf("\"\n");
2683		} else {
2684		line = getLineByType(LT_KERNELARGS, entry->lines);
2685		if (line) {
2686		char *s;
2687
2688		printf("args=\"");
2689		i = 1;
2690		while (i < line->numElements) {
2691		if (!strncmp
2692		(line->elements[i].item, "root=", 5)) {
2693		root = line->elements[i].item + 5;
2694		} else {
2695		s = line->elements[i].item;
2696
2697	int checkLiloOnRaid(char * mdDev, const unsigned char * boot) {	printf("%s%s", s,
2698	int fd;	line->elements[i].indent);
2699	char buf[65536];	}
	char * end;
	char * chptr;
	char * chptr2;
	int rc;
2700
2701	/* it's on raid; we need to parse /proc/mdstat and check all of the	i++;
2702	*raw* devices listed in there */	}
2703
2704	if (!strncmp(mdDev, "/dev/", 5))	s = line->elements[i - 1].indent;
2705	mdDev += 5;	printf("\"\n");
2706		}
2707		}
2708
2709	if ((fd = open("/proc/mdstat", O_RDONLY)) < 0) {	if (!root) {
2710	fprintf(stderr, _("grubby: failed to open /proc/mdstat: %s\n"),	line = getLineByType(LT_ROOT, entry->lines);
2711	strerror(errno));	if (line && line->numElements >= 2)
2712	return 2;	root = line->elements[1].item;
2713	}	}
2714
2715	rc = read(fd, buf, sizeof(buf) - 1);	if (root) {
2716	if (rc < 0 || rc == (sizeof(buf) - 1)) {	char *s = alloca(strlen(root) + 1);
	fprintf(stderr, _("grubby: failed to read /proc/mdstat: %s\n"),
	strerror(errno));
	close(fd);
	return 2;
	}
	close(fd);
	buf[rc] = '\0';
2717
2718	chptr = buf;	strcpy(s, root);
2719	while (*chptr) {	if (s[strlen(s) - 1] == '"')
2720	end = strchr(chptr, '\n');	s[strlen(s) - 1] = '\0';
2721	if (!end) break;	/* make sure the root doesn't have a trailing " */
2722	*end = '\0';	printf("root=%s\n", s);
2723		}
2724
2725	if (!strncmp(chptr, mdDev, strlen(mdDev)) &&	line =
2726	chptr[strlen(mdDev)] == ' ') {	getLineByType(LT_INITRD | LT_INITRD_EFI | LT_INITRD_16,
2727		entry->lines);
2728
2729	/* found the device */	if (line && line->numElements >= 2) {
2730	while (*chptr && *chptr != ':') chptr++;	if (!strncmp(prefix, line->elements[1].item, strlen(prefix)))
2731	chptr++;	printf("initrd=");
2732	while (*chptr && isspace(*chptr)) chptr++;	else
2733		printf("initrd=%s", prefix);
	/* skip the "active" bit */
	while (*chptr && !isspace(*chptr)) chptr++;
	while (*chptr && isspace(*chptr)) chptr++;
	/* skip the raid level */
	while (*chptr && !isspace(*chptr)) chptr++;
	while (*chptr && isspace(*chptr)) chptr++;
	/* everything else is partition stuff */
	while (*chptr) {
	chptr2 = chptr;
	while (*chptr2 && *chptr2 != '[') chptr2++;
	if (!*chptr2) break;
	/* yank off the numbers at the end */
	chptr2--;
	while (isdigit(*chptr2) && chptr2 > chptr) chptr2--;
	chptr2++;
	*chptr2 = '\0';
	/* Better, now we need the /dev/ back. We're done with
	* everything before this point, so we can just put
	* the /dev/ part there. There will always be room. */
	memcpy(chptr - 5, "/dev/", 5);
	rc = checkDeviceBootloader(chptr - 5, boot);
	if (rc != 2) {
	return rc;
	}
	chptr = chptr2 + 1;
	/* skip the [11] bit */
	while (*chptr && !isspace(*chptr)) chptr++;
	/* and move to the next one */
	while (*chptr && isspace(*chptr)) chptr++;
	}
2734
2735	/*  we're good to go */	for (i = 1; i < line->numElements; i++)
2736	return 2;	printf("%s%s", line->elements[i].item,
2737		line->elements[i].indent);
2738		printf("\n");
2739	}	}
2740
2741	chptr = end + 1;	line = getLineByType(LT_TITLE, entry->lines);
2742	}	if (line) {
2743		printf("title=%s\n", line->elements[1].item);
2744		} else {
2745		char *title;
2746		line = getLineByType(LT_MENUENTRY, entry->lines);
2747		if (line) {
2748		title = grub2ExtractTitle(line);
2749		if (title)
2750		printf("title=%s\n", title);
2751		}
2752		}
2753
2754	fprintf(stderr,	for (j = 0, line = entry->lines; line; line = line->next) {
2755	_("grubby: raid device /dev/%s not found in /proc/mdstat\n"),	if ((line->type & LT_MBMODULE) && line->numElements >= 2) {
2756	mdDev);	if (!strncmp
2757	return 0;	(prefix, line->elements[1].item, strlen(prefix)))
2758		printf("mbmodule%d=", j);
2759		else
2760		printf("mbmodule%d=%s", j, prefix);
2761
2762		for (i = 1; i < line->numElements; i++)
2763		printf("%s%s", line->elements[i].item,
2764		line->elements[i].indent);
2765		printf("\n");
2766		j++;
2767		}
2768		}
2769	}	}
2770
2771	int checkForLilo(struct grubConfig * config) {	int isSuseSystem(void)
2772	int fd;	{
2773	unsigned char boot[512];	const char *path;
2774	struct singleLine * line;	const static char default_path[] = "/etc/SuSE-release";
	for (line = config->theLines; line; line = line->next)
	if (line->type == LT_BOOT) break;
	if (!line) {
	fprintf(stderr,
	_("grubby: no boot line found in lilo configuration\n"));
	return 1;
	}
2775
2776	if (line->numElements != 2) return 1;	if ((path = getenv("GRUBBY_SUSE_RELEASE")) == NULL)
2777		path = default_path;
2778
2779	fd = open("/boot/boot.b", O_RDONLY);	if (!access(path, R_OK))
2780	if (fd < 0) {	return 1;
2781	fprintf(stderr, _("grubby: unable to open %s: %s\n"),	return 0;
2782	"/boot/boot.b", strerror(errno));	}
	return 1;
	}
2783
2784	if (read(fd, boot, 512) != 512) {	int isSuseGrubConf(const char *path)
2785	fprintf(stderr, _("grubby: unable to read %s: %s\n"),	{
2786	"/boot/boot.b", strerror(errno));	FILE *grubConf;
2787	return 1;	char *line = NULL;
2788	}	size_t len = 0, res = 0;
2789	close(fd);
2790		grubConf = fopen(path, "r");
2791		if (!grubConf) {
2792		dbgPrintf("Could not open SuSE configuration file '%s'\n",
2793		path);
2794		return 0;
2795		}
2796
2797		while ((res = getline(&line, &len, grubConf)) != -1) {
2798		if (!strncmp(line, "setup", 5)) {
2799		fclose(grubConf);
2800		free(line);
2801		return 1;
2802		}
2803		}
2804
2805	if (!strncmp("/dev/md", line->elements[1].item, 7))	dbgPrintf("SuSE configuration file '%s' does not appear to be valid\n",
2806	return checkLiloOnRaid(line->elements[1].item, boot);	path);
2807
2808	return checkDeviceBootloader(line->elements[1].item, boot);	fclose(grubConf);
2809		free(line);
2810		return 0;
2811	}	}
2812
2813	int checkForGrub(struct grubConfig * config) {	int suseGrubConfGetLba(const char *path, int *lbaPtr)
2814	int fd;	{
2815	unsigned char bootSect[512];	FILE *grubConf;
2816	char * boot;	char *line = NULL;
2817		size_t res = 0, len = 0;
2818
2819	if (parseSysconfigGrub(NULL, &boot))	if (!path)
2820	return 0;	return 1;
2821		if (!lbaPtr)
2822		return 1;
2823
2824	/* assume grub is not installed -- not an error condition */	grubConf = fopen(path, "r");
2825	if (!boot)	if (!grubConf)
2826	return 0;	return 1;
2827
2828	fd = open("/boot/grub/stage1", O_RDONLY);	while ((res = getline(&line, &len, grubConf)) != -1) {
2829	if (fd < 0)	if (line[res - 1] == '\n')
2830	/* this doesn't exist if grub hasn't been installed */	line[res - 1] = '\0';
2831	return 0;	else if (len > res)
2832		line[res] = '\0';
2833		else {
2834		line = realloc(line, res + 1);
2835		line[res] = '\0';
2836		}
2837
2838	if (read(fd, bootSect, 512) != 512) {	if (!strncmp(line, "setup", 5)) {
2839	fprintf(stderr, _("grubby: unable to read %s: %s\n"),	if (strstr(line, "--force-lba")) {
2840	"/boot/grub/stage1", strerror(errno));	*lbaPtr = 1;
2841	close(fd);	} else {
2842	return 1;	*lbaPtr = 0;
2843	}	}
2844	close(fd);	dbgPrintf("lba: %i\n", *lbaPtr);
2845		break;
2846		}
2847		}
2848
2849	return checkDeviceBootloader(boot, bootSect);	free(line);
2850		fclose(grubConf);
2851		return 0;
2852	}	}
2853
2854	int checkForExtLinux(struct grubConfig * config) {	int suseGrubConfGetInstallDevice(const char *path, char **devicePtr)
2855	int fd;	{
2856	unsigned char bootSect[512];	FILE *grubConf;
2857	char * boot;	char *line = NULL;
2858	char executable[] = "/boot/extlinux/extlinux";	size_t res = 0, len = 0;
2859		char *lastParamPtr = NULL;
2860		char *secLastParamPtr = NULL;
2861		char installDeviceNumber = '\0';
2862		char *bounds = NULL;
2863
2864	printf("entered: checkForExtLinux()\n");	if (!path)
2865		return 1;
2866		if (!devicePtr)
2867		return 1;
2868
2869	if (parseSysconfigGrub(NULL, &boot))	grubConf = fopen(path, "r");
2870	return 0;	if (!grubConf)
2871		return 1;
2872
2873	/* assume grub is not installed -- not an error condition */	while ((res = getline(&line, &len, grubConf)) != -1) {
2874	if (!boot)	if (strncmp(line, "setup", 5))
2875	return 0;	continue;
2876
2877		if (line[res - 1] == '\n')
2878		line[res - 1] = '\0';
2879		else if (len > res)
2880		line[res] = '\0';
2881		else {
2882		line = realloc(line, res + 1);
2883		line[res] = '\0';
2884		}
2885
2886	fd = open(executable, O_RDONLY);	lastParamPtr = bounds = line + res;
	if (fd < 0)
	/* this doesn't exist if grub hasn't been installed */
	return 0;
2887
2888	if (read(fd, bootSect, 512) != 512) {	/* Last parameter in grub may be an optional IMAGE_DEVICE */
2889	fprintf(stderr, _("grubby: unable to read %s: %s\n"),	while (!isspace(*lastParamPtr))
2890	executable, strerror(errno));	lastParamPtr--;
2891	return 1;	lastParamPtr++;
2892	}
2893	close(fd);	secLastParamPtr = lastParamPtr - 2;
2894		dbgPrintf("lastParamPtr: %s\n", lastParamPtr);
2895
2896		if (lastParamPtr + 3 > bounds) {
2897		dbgPrintf("lastParamPtr going over boundary");
2898		fclose(grubConf);
2899		free(line);
2900		return 1;
2901		}
2902		if (!strncmp(lastParamPtr, "(hd", 3))
2903		lastParamPtr += 3;
2904		dbgPrintf("lastParamPtr: %c\n", *lastParamPtr);
2905
2906		/*
2907		* Second last parameter will decide wether last parameter is
2908		* an IMAGE_DEVICE or INSTALL_DEVICE
2909		*/
2910		while (!isspace(*secLastParamPtr))
2911		secLastParamPtr--;
2912		secLastParamPtr++;
2913
2914		if (secLastParamPtr + 3 > bounds) {
2915		dbgPrintf("secLastParamPtr going over boundary");
2916		fclose(grubConf);
2917		free(line);
2918		return 1;
2919		}
2920		dbgPrintf("secLastParamPtr: %s\n", secLastParamPtr);
2921		if (!strncmp(secLastParamPtr, "(hd", 3)) {
2922		secLastParamPtr += 3;
2923		dbgPrintf("secLastParamPtr: %c\n", *secLastParamPtr);
2924		installDeviceNumber = *secLastParamPtr;
2925		} else {
2926		installDeviceNumber = *lastParamPtr;
2927		}
2928
2929	return checkDeviceBootloader(boot, bootSect);	*devicePtr = malloc(6);
2930		snprintf(*devicePtr, 6, "(hd%c)", installDeviceNumber);
2931		dbgPrintf("installDeviceNumber: %c\n", installDeviceNumber);
2932		fclose(grubConf);
2933		free(line);
2934		return 0;
2935		}
2936
2937		free(line);
2938		fclose(grubConf);
2939		return 1;
2940	}	}
2941
2942	static char * getRootSpecifier(char * str) {	int grubGetBootFromDeviceMap(const char *device, char **bootPtr)
2943	char * idx, * rootspec = NULL;	{
2944		FILE *deviceMap;
2945		char *line = NULL;
2946		size_t res = 0, len = 0;
2947		char *devicePtr;
2948		char *bounds = NULL;
2949		const char *path;
2950		const static char default_path[] = "/boot/grub/device.map";
2951
2952	if (*str == '(') {	if (!device)
2953	idx = rootspec = strdup(str);	return 1;
2954	while(*idx && (*idx != ')') && (!isspace(*idx))) idx++;	if (!bootPtr)
2955	*(++idx) = '\0';	return 1;
	}
	return rootspec;
	}
2956
2957	static char * getInitrdVal(struct grubConfig * config,	if ((path = getenv("GRUBBY_GRUB_DEVICE_MAP")) == NULL)
2958	const char * prefix, struct singleLine *tmplLine,	path = default_path;
	const char * newKernelInitrd,
	char ** extraInitrds, int extraInitrdCount)
	{
	char *initrdVal, *end;
	int i;
	size_t totalSize;
	size_t prefixLen;
	char separatorChar;
	prefixLen = strlen(prefix);
	totalSize = strlen(newKernelInitrd) - prefixLen + 1 /* \0 */;
	for (i = 0; i < extraInitrdCount; i++) {
	totalSize += sizeof(separatorChar);
	totalSize += strlen(extraInitrds[i]) - prefixLen;
	}
2959
2960	initrdVal = end = malloc(totalSize);	dbgPrintf("opening grub device.map file from: %s\n", path);
2961		deviceMap = fopen(path, "r");
2962		if (!deviceMap)
2963		return 1;
2964
2965	end = stpcpy (end, newKernelInitrd + prefixLen);	while ((res = getline(&line, &len, deviceMap)) != -1) {
2966		if (!strncmp(line, "#", 1))
2967		continue;
2968
2969		if (line[res - 1] == '\n')
2970		line[res - 1] = '\0';
2971		else if (len > res)
2972		line[res] = '\0';
2973		else {
2974		line = realloc(line, res + 1);
2975		line[res] = '\0';
2976		}
2977
2978	separatorChar = getKeywordByType(LT_INITRD, config->cfi)->separatorChar;	devicePtr = line;
2979	for (i = 0; i < extraInitrdCount; i++) {	bounds = line + res;
	const char *extraInitrd;
	int j;
2980
2981	extraInitrd = extraInitrds[i] + prefixLen;	while ((isspace(*line) && ((devicePtr + 1) <= bounds)))
2982	/* Don't add entries that are already there */	devicePtr++;
2983	if (tmplLine != NULL) {	dbgPrintf("device: %s\n", devicePtr);
2984	for (j = 2; j < tmplLine->numElements; j++)
2985	if (strcmp(extraInitrd, tmplLine->elements[j].item) == 0)	if (!strncmp(devicePtr, device, strlen(device))) {
2986	break;	devicePtr += strlen(device);
2987		while (isspace(*devicePtr)
2988		&& ((devicePtr + 1) <= bounds))
2989		devicePtr++;
2990
2991	if (j != tmplLine->numElements)	*bootPtr = strdup(devicePtr);
2992	continue;	break;
2993		}
2994	}	}
2995
2996	*end++ = separatorChar;	free(line);
2997	end = stpcpy(end, extraInitrd);	fclose(deviceMap);
2998	}	return 0;
	return initrdVal;
2999	}	}
3000
3001	int addNewKernel(struct grubConfig * config, struct singleEntry * template,	int suseGrubConfGetBoot(const char *path, char **bootPtr)
3002	const char * prefix,	{
3003	char * newKernelPath, char * newKernelTitle,	char *grubDevice;
	char * newKernelArgs, char * newKernelInitrd,
	char ** extraInitrds, int extraInitrdCount,
	char * newMBKernel, char * newMBKernelArgs) {
	struct singleEntry * new;
	struct singleLine * newLine = NULL, * tmplLine = NULL, * masterLine = NULL;
	int needs;
	char * chptr;
	if (!newKernelPath) return 0;
	/* if the newKernelTitle is too long silently munge it into something
	* we can live with. truncating is first check, then we'll just mess with
	* it until it looks better */
	if (config->cfi->maxTitleLength &&
	(strlen(newKernelTitle) > config->cfi->maxTitleLength)) {
	char * buf = alloca(config->cfi->maxTitleLength + 7);
	char * numBuf = alloca(config->cfi->maxTitleLength + 1);
	int i = 1;
3004
3005	sprintf(buf, "TITLE=%.*s", config->cfi->maxTitleLength, newKernelTitle);	if (suseGrubConfGetInstallDevice(path, &grubDevice))
3006	while (findEntryByPath(config, buf, NULL, NULL)) {	dbgPrintf("error looking for grub installation device\n");
3007	sprintf(numBuf, "%d", i++);	else
3008	strcpy(buf + strlen(buf) - strlen(numBuf), numBuf);	dbgPrintf("grubby installation device: %s\n", grubDevice);
	}
3009
3010	newKernelTitle = buf + 6;	if (grubGetBootFromDeviceMap(grubDevice, bootPtr))
3011	}	dbgPrintf("error looking for grub boot device\n");
3012		else
3013		dbgPrintf("grubby boot device: %s\n", *bootPtr);
3014
3015	new = malloc(sizeof(*new));	free(grubDevice);
3016	new->skip = 0;	return 0;
3017	new->multiboot = 0;	}
	new->next = config->entries;
	new->lines = NULL;
	config->entries = new;
	/* copy/update from the template */
	needs = NEED_KERNEL | NEED_TITLE;
	if (newKernelInitrd)
	needs |= NEED_INITRD;
	if (newMBKernel) {
	needs |= NEED_MB;
	new->multiboot = 1;
	}
3018
3019	if (template) {	int parseSuseGrubConf(int *lbaPtr, char **bootPtr)
3020	for (masterLine = template->lines;	{
3021	masterLine && (tmplLine = lineDup(masterLine));	/*
3022	lineFree(tmplLine), masterLine = masterLine->next)	* This SuSE grub configuration file at this location is not your
3023	{	* average grub configuration file, but instead the grub commands
3024	dbgPrintf("addNewKernel processing %d\n", tmplLine->type);	* used to setup grub on that system.
	/* skip comments */
	chptr = tmplLine->indent;
	while (*chptr && isspace(*chptr)) chptr++;
	if (*chptr == '#') continue;
	if (tmplLine->type == LT_KERNEL &&
	tmplLine->numElements >= 2) {
	if (!template->multiboot && (needs & NEED_MB)) {
	/* it's not a multiboot template and this is the kernel
	* line.  Try to be intelligent about inserting the
	* hypervisor at the same time.
	*/
	if (config->cfi->mbHyperFirst) {
	/* insert the hypervisor first */
	newLine = addLine(new, config->cfi, LT_HYPER,
	tmplLine->indent,
	newMBKernel + strlen(prefix));
	/* set up for adding the kernel line */
	free(tmplLine->indent);
	tmplLine->indent = strdup(config->secondaryIndent);
	needs &= ~NEED_MB;
	}
	if (needs & NEED_KERNEL) {
	/* use addLineTmpl to preserve line elements,
	* otherwise we could just call addLine.  Unfortunately
	* this means making some changes to the template
	* such as the indent change above and the type
	* change below.
	*/
	struct keywordTypes * mbm_kw =
	getKeywordByType(LT_MBMODULE, config->cfi);
	if (mbm_kw) {
	tmplLine->type = LT_MBMODULE;
	free(tmplLine->elements[0].item);
	tmplLine->elements[0].item = strdup(mbm_kw->key);
	}
	newLine = addLineTmpl(new, tmplLine, newLine,
	newKernelPath + strlen(prefix), config->cfi);
	needs &= ~NEED_KERNEL;
	}
	if (needs & NEED_MB) { /* !mbHyperFirst */
	newLine = addLine(new, config->cfi, LT_HYPER,
	config->secondaryIndent,
	newMBKernel + strlen(prefix));
	needs &= ~NEED_MB;
	}
	} else if (needs & NEED_KERNEL) {
	newLine = addLineTmpl(new, tmplLine, newLine,
	newKernelPath + strlen(prefix), config->cfi);
	needs &= ~NEED_KERNEL;
	}
	} else if (tmplLine->type == LT_HYPER &&
	tmplLine->numElements >= 2) {
	if (needs & NEED_MB) {
	newLine = addLineTmpl(new, tmplLine, newLine,
	newMBKernel + strlen(prefix), config->cfi);
	needs &= ~NEED_MB;
	}
	} else if (tmplLine->type == LT_MBMODULE &&
	tmplLine->numElements >= 2) {
	if (new->multiboot) {
	if (needs & NEED_KERNEL) {
	newLine = addLineTmpl(new, tmplLine, newLine,
	newKernelPath +
	strlen(prefix), config->cfi);
	needs &= ~NEED_KERNEL;
	} else if (config->cfi->mbInitRdIsModule &&
	(needs & NEED_INITRD)) {
	char *initrdVal;
	initrdVal = getInitrdVal(config, prefix, tmplLine,
	newKernelInitrd, extraInitrds,
	extraInitrdCount);
	newLine = addLineTmpl(new, tmplLine, newLine,
	initrdVal, config->cfi);
	free(initrdVal);
	needs &= ~NEED_INITRD;
	}
	} else if (needs & NEED_KERNEL) {
	/* template is multi but new is not,
	* insert the kernel in the first module slot
	*/
	tmplLine->type = LT_KERNEL;
	free(tmplLine->elements[0].item);
	tmplLine->elements[0].item =
	strdup(getKeywordByType(LT_KERNEL, config->cfi)->key);
	newLine = addLineTmpl(new, tmplLine, newLine,
	newKernelPath + strlen(prefix), config->cfi);
	needs &= ~NEED_KERNEL;
	} else if (needs & NEED_INITRD) {
	char *initrdVal;
	/* template is multi but new is not,
	* insert the initrd in the second module slot
	*/
	tmplLine->type = LT_INITRD;
	free(tmplLine->elements[0].item);
	tmplLine->elements[0].item =
	strdup(getKeywordByType(LT_INITRD, config->cfi)->key);
	initrdVal = getInitrdVal(config, prefix, tmplLine, newKernelInitrd, extraInitrds, extraInitrdCount);
	newLine = addLineTmpl(new, tmplLine, newLine, initrdVal, config->cfi);
	free(initrdVal);
	needs &= ~NEED_INITRD;
	}
	} else if (tmplLine->type == LT_INITRD &&
	tmplLine->numElements >= 2) {
	if (needs & NEED_INITRD &&
	new->multiboot && !template->multiboot &&
	config->cfi->mbInitRdIsModule) {
	/* make sure we don't insert the module initrd
	* before the module kernel... if we don't do it here,
	* it will be inserted following the template.
	*/
	if (!needs & NEED_KERNEL) {
	char *initrdVal;
	initrdVal = getInitrdVal(config, prefix, tmplLine, newKernelInitrd, extraInitrds, extraInitrdCount);
	newLine = addLine(new, config->cfi, LT_MBMODULE,
	config->secondaryIndent,
	initrdVal);
	free(initrdVal);
	needs &= ~NEED_INITRD;
	}
	} else if (needs & NEED_INITRD) {
	char *initrdVal;
	initrdVal = getInitrdVal(config, prefix, tmplLine, newKernelInitrd, extraInitrds, extraInitrdCount);
	newLine = addLineTmpl(new, tmplLine, newLine, initrdVal, config->cfi);
	free(initrdVal);
	needs &= ~NEED_INITRD;
	}
	} else if (tmplLine->type == LT_TITLE &&
	(needs & NEED_TITLE)) {
	if (tmplLine->numElements >= 2) {
	newLine = addLineTmpl(new, tmplLine, newLine,
	newKernelTitle, config->cfi);
	needs &= ~NEED_TITLE;
	} else if (tmplLine->numElements == 1 &&
	config->cfi->titleBracketed) {
	/* addLineTmpl doesn't handle titleBracketed */
	newLine = addLine(new, config->cfi, LT_TITLE,
	tmplLine->indent, newKernelTitle);
	needs &= ~NEED_TITLE;
	}
	} else {
	/* pass through other lines from the template */
	newLine = addLineTmpl(new, tmplLine, newLine, NULL, config->cfi);
	}
	}
	} else {
	/* don't have a template, so start the entry with the
	* appropriate starting line
3025	*/	*/
3026	switch (config->cfi->entrySeparator) {	const char *path;
3027	case LT_KERNEL:	const static char default_path[] = "/etc/grub.conf";
	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;
	}
3028
3029	case LT_HYPER:	if ((path = getenv("GRUBBY_SUSE_GRUB_CONF")) == NULL)
3030	newLine = addLine(new, config->cfi, LT_HYPER,	path = default_path;
	config->primaryIndent,
	newMBKernel + strlen(prefix));
	needs &= ~NEED_MB;
	break;
3031
3032	case LT_TITLE:	if (!isSuseGrubConf(path))
3033	if( useextlinuxmenu != 0 ){ // We just need useextlinuxmenu to not be zero (set above)	return 1;
	char * templabel;
	int x = 0, y = 0;
	templabel = strdup(newKernelTitle);
	while( templabel[x]){
	if( templabel[x] == ' ' ){
	y = x;
	while( templabel[y] ){
	templabel[y] = templabel[y+1];
	y++;
	}
	}
	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;
3034
3035	default:	if (lbaPtr) {
3036	abort();	*lbaPtr = 0;
3037		if (suseGrubConfGetLba(path, lbaPtr))
3038		return 1;
3039	}	}
	}
	/* add the remainder of the lines, i.e. those that either
	* weren't present in the template, or in the case of no template,
	* all the lines following the entrySeparator.
	*/
	if (needs & NEED_TITLE) {
	newLine = addLine(new, config->cfi, LT_TITLE,
	config->secondaryIndent,
	newKernelTitle);
	needs &= ~NEED_TITLE;
	}
	if ((needs & NEED_MB) && config->cfi->mbHyperFirst) {
	newLine = addLine(new, config->cfi, LT_HYPER,
	config->secondaryIndent,
	newMBKernel + strlen(prefix));
	needs &= ~NEED_MB;
	}
	if (needs & NEED_KERNEL) {
	newLine = addLine(new, config->cfi,
	(new->multiboot && getKeywordByType(LT_MBMODULE,
	config->cfi)) ?
	LT_MBMODULE : LT_KERNEL,
	config->secondaryIndent,
	newKernelPath + strlen(prefix));
	needs &= ~NEED_KERNEL;
	}
	if (needs & NEED_MB) {
	newLine = addLine(new, config->cfi, LT_HYPER,
	config->secondaryIndent,
	newMBKernel + strlen(prefix));
	needs &= ~NEED_MB;
	}
	if (needs & NEED_INITRD) {
	char *initrdVal;
	initrdVal = getInitrdVal(config, prefix, NULL, newKernelInitrd, extraInitrds, extraInitrdCount);
	newLine = addLine(new, config->cfi,
	(new->multiboot && getKeywordByType(LT_MBMODULE,
	config->cfi)) ?
	LT_MBMODULE : LT_INITRD,
	config->secondaryIndent,
	initrdVal);
	free(initrdVal);
	needs &= ~NEED_INITRD;
	}
	if (needs) {
	printf(_("grubby: needs=%d, aborting\n"), needs);
	abort();
	}
3040
3041	if (updateImage(config, "0", prefix, newKernelArgs, NULL,	if (bootPtr) {
3042	newMBKernelArgs, NULL)) return 1;	*bootPtr = NULL;
3043		suseGrubConfGetBoot(path, bootPtr);
3044		}
3045
3046	return 0;	return 0;
3047	}	}
3048
3049	static void traceback(int signum)	int parseSysconfigGrub(int *lbaPtr, char **bootPtr)
3050	{	{
3051	void *array[40];	FILE *in;
3052	size_t size;	char buf[1024];
3053		char *chptr;
3054		char *start;
3055		char *param;
3056
3057	signal(SIGSEGV, SIG_DFL);	in = fopen("/etc/sysconfig/grub", "r");
3058	memset(array, '\0', sizeof (array));	if (!in)
	size = backtrace(array, 40);
	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);
3059	return 1;	return 1;
3060	}
3061	break;	if (lbaPtr)
3062		*lbaPtr = 0;
3063		if (bootPtr)
3064		*bootPtr = NULL;
3065
3066		while (fgets(buf, sizeof(buf), in)) {
3067		start = buf;
3068		while (isspace(*start))
3069		start++;
3070		if (*start == '#')
3071		continue;
3072
3073		chptr = strchr(start, '=');
3074		if (!chptr)
3075		continue;
3076		chptr--;
3077		while (*chptr && isspace(*chptr))
3078		chptr--;
3079		chptr++;
3080		*chptr = '\0';
3081
3082		param = chptr + 1;
3083		while (*param && isspace(*param))
3084		param++;
3085		if (*param == '=') {
3086		param++;
3087		while (*param && isspace(*param))
3088		param++;
3089		}
3090
3091		chptr = param;
3092		while (*chptr && !isspace(*chptr))
3093		chptr++;
3094		*chptr = '\0';
3095
3096		if (!strcmp(start, "forcelba") && !strcmp(param, "1") && lbaPtr)
3097		*lbaPtr = 1;
3098		else if (!strcmp(start, "boot") && bootPtr)
3099		*bootPtr = strdup(param);
3100	}	}
	}
3101
3102	if (arg < -1) {	fclose(in);
	fprintf(stderr, _("grubby: bad argument %s: %s\n"),
	poptBadOption(optCon, POPT_BADOPTION_NOALIAS),
	poptStrerror(arg));
	return 1;
	}
3103
3104	if ((chptr = poptGetArg(optCon))) {	return 0;
3105	fprintf(stderr, _("grubby: unexpected argument %s\n"), chptr);	}
	return 1;
	}
3106
3107	if ((configureLilo + configureGrub + configureELilo +	void dumpSysconfigGrub(void)
3108	configureYaboot + configureSilo + configureZipl +	{
3109	configureExtLinux ) > 1) {	char *boot = NULL;
3110	fprintf(stderr, _("grubby: cannot specify multiple bootloaders\n"));	int lba;
	return 1;
	} else if (bootloaderProbe && grubConfig) {
	fprintf(stderr,
	_("grubby: cannot specify config file with --bootloader-probe\n"));
	return 1;
	} else if (configureLilo) {
	cfi = &liloConfigType;
	} else if (configureGrub) {
	cfi = &grubConfigType;
	} else if (configureELilo) {
	cfi = &eliloConfigType;
	} else if (configureYaboot) {
	cfi = &yabootConfigType;
	} else if (configureSilo) {
	cfi = &siloConfigType;
	} else if (configureZipl) {
	cfi = &ziplConfigType;
	} else if (configureExtLinux) {
	cfi = &extlinuxConfigType;
	useextlinuxmenu=1;
	}
3111
3112	if (!cfi) {	if (isSuseSystem()) {
3113	#ifdef __ia64__	if (parseSuseGrubConf(&lba, &boot)) {
3114	cfi = &eliloConfigType;	free(boot);
3115	#elif __powerpc__	return;
3116	cfi = &yabootConfigType;	}
3117	#elif __sparc__	} else {
3118	cfi = &siloConfigType;	if (parseSysconfigGrub(&lba, &boot)) {
3119	#elif __s390__	free(boot);
3120	cfi = &ziplConfigType;	return;
3121	#elif __s390x__	}
3122	cfi = &ziplConfigtype;	}
	#else
	cfi = &grubConfigType;
	#endif
	}
3123
3124	if (!grubConfig)	if (lba)
3125	grubConfig = cfi->defaultConfig;	printf("lba\n");
3126		if (boot) {
3127		printf("boot=%s\n", boot);
3128		free(boot);
3129		}
3130		}
3131
3132	if (bootloaderProbe && (displayDefault || kernelInfo || newKernelVersion ||	int displayInfo(struct grubConfig *config, char *kernel, const char *prefix)
3133	newKernelPath || removeKernelPath || makeDefault ||	{
3134	defaultKernel)) {	int i = 0;
3135	fprintf(stderr, _("grubby: --bootloader-probe may not be used with "	struct singleEntry *entry;
3136	"specified option"));	struct singleLine *line;
3137	return 1;
3138	}	entry = findEntryByPath(config, kernel, prefix, &i);
3139		if (!entry) {
3140		fprintf(stderr, _("grubby: kernel not found\n"));
3141		return 1;
3142		}
3143
3144	if ((displayDefault || kernelInfo) && (newKernelVersion || newKernelPath ||	/* this is a horrible hack to support /etc/sysconfig/grub; there must
3145	removeKernelPath)) {	be a better way */
3146	fprintf(stderr, _("grubby: --default-kernel and --info may not "	if (config->cfi == &grubConfigType) {
3147	"be used when adding or removing kernels\n"));	dumpSysconfigGrub();
3148	return 1;	} else {
3149	}	line = getLineByType(LT_BOOT, config->theLines);
3150		if (line && line->numElements >= 1) {
3151		printf("boot=%s\n", line->elements[1].item);
3152		}
3153
3154	if (newKernelPath && !newKernelTitle) {	line = getLineByType(LT_LBA, config->theLines);
3155	fprintf(stderr, _("grubby: kernel title must be specified\n"));	if (line)
3156	return 1;	printf("lba\n");
3157	} else if (!newKernelPath && (newKernelTitle  || copyDefault ||	}
	(newKernelInitrd && !updateKernelPath)||
	makeDefault || extraInitrdCount > 0)) {
	fprintf(stderr, _("grubby: kernel path expected\n"));
	return 1;
	}
3158
3159	if (newKernelPath && updateKernelPath) {	displayEntry(entry, prefix, i);
	fprintf(stderr, _("grubby: --add-kernel and --update-kernel may"
	"not be used together"));
	return 1;
	}
3160
3161	if (makeDefault && defaultKernel) {	i++;
3162	fprintf(stderr, _("grubby: --make-default and --default-kernel "	while ((entry = findEntryByPath(config, kernel, prefix, &i))) {
3163	"may not be used together\n"));	displayEntry(entry, prefix, i);
3164	return 1;	i++;
3165	} else if (defaultKernel && removeKernelPath &&	}
	!strcmp(defaultKernel, removeKernelPath)) {
	fprintf(stderr, _("grubby: cannot make removed kernel the default\n"));
	return 1;
	} else if (defaultKernel && newKernelPath &&
	!strcmp(defaultKernel, newKernelPath)) {
	makeDefault = 1;
	defaultKernel = NULL;
	}
3166
3167	if (!strcmp(grubConfig, "-") && !outputFile) {	return 0;
3168	fprintf(stderr, _("grubby: output file must be specified if stdin "	}
	"is used\n"));
	return 1;
	}
3169
3170	if (!removeKernelPath && !newKernelPath && !displayDefault && !defaultKernel	struct singleLine *addLineTmpl(struct singleEntry *entry,
3171	&& !kernelInfo && !bootloaderProbe && !updateKernelPath	struct singleLine *tmplLine,
3172	&& !removeMBKernel) {	struct singleLine *prevLine,
3173	fprintf(stderr, _("grubby: no action specified\n"));	const char *val, struct configFileInfo *cfi)
3174	return 1;	{
3175	}	struct singleLine *newLine = lineDup(tmplLine);
3176
3177	flags |= badImageOkay ? GRUBBY_BADIMAGE_OKAY : 0;	if (isEfi && cfi == &grub2ConfigType) {
3178		enum lineType_e old = newLine->type;
3179		newLine->type = preferredLineType(newLine->type, cfi);
3180		if (old != newLine->type)
3181		newLine->elements[0].item =
3182		getKeyByType(newLine->type, cfi);
3183		}
3184
3185	if (cfi->needsBootPrefix) {	if (val) {
3186	if (!bootPrefix) {	/* override the inherited value with our own.
3187	bootPrefix = findBootPrefix();	* This is a little weak because it only applies to elements[1]
3188	if (!bootPrefix) return 1;	*/
3189	} else {	if (newLine->numElements > 1)
3190	/* this shouldn't end with a / */	removeElement(newLine, 1);
3191	if (bootPrefix[strlen(bootPrefix) - 1] == '/')	insertElement(newLine, val, 1, cfi);
3192	bootPrefix[strlen(bootPrefix) - 1] = '\0';
3193		/* but try to keep the rootspec from the template... sigh */
3194		if (tmplLine->
3195		type & (LT_HYPER | LT_KERNEL | LT_MBMODULE | LT_INITRD |
3196		LT_KERNEL_EFI | LT_INITRD_EFI | LT_KERNEL_16 |
3197		LT_INITRD_16)) {
3198		char *rootspec =
3199		getRootSpecifier(tmplLine->elements[1].item);
3200		if (rootspec != NULL) {
3201		free(newLine->elements[1].item);
3202		newLine->elements[1].item =
3203		sdupprintf("%s%s", rootspec, val);
3204		}
3205		}
3206	}	}
	} else {
	bootPrefix = "";
	}
3207
3208	if (!cfi->mbAllowExtraInitRds &&	dbgPrintf("addLineTmpl(%s)\n", newLine->numElements ?
3209	extraInitrdCount > 0) {	newLine->elements[0].item : "");
	fprintf(stderr, _("grubby: %s doesn't allow multiple initrds\n"), cfi->defaultConfig);
	return 1;
	}
3210
3211	if (bootloaderProbe) {	if (!entry->lines) {
3212	int lrc = 0, grc = 0, erc = 0;	/* first one on the list */
3213	struct grubConfig * lconfig, * gconfig;	entry->lines = newLine;
3214		} else if (prevLine) {
3215	if (!access(grubConfigType.defaultConfig, F_OK)) {	/* add after prevLine */
3216	gconfig = readConfig(grubConfigType.defaultConfig, &grubConfigType);	newLine->next = prevLine->next;
3217	if (!gconfig)	prevLine->next = newLine;
3218	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");
3219
3220	return 0;	return newLine;
3221	}	}
3222
3223	config = readConfig(grubConfig, cfi);	/* val may be NULL */
3224	if (!config) return 1;	struct singleLine *addLine(struct singleEntry *entry,
3225		struct configFileInfo *cfi,
3226		enum lineType_e type, char *defaultIndent,
3227		const char *val)
3228		{
3229		struct singleLine *line, *prev;
3230		struct keywordTypes *kw;
3231		struct singleLine tmpl;
3232
3233	if (displayDefault) {	/* NB: This function shouldn't allocate items on the heap, rather on
3234	struct singleLine * line;	* the stack since it calls addLineTmpl which will make copies.
3235	struct singleEntry * entry;	*/
3236	char * rootspec;	if (type == LT_TITLE && cfi->titleBracketed) {
3237		/* we're doing a bracketed title (zipl) */
3238	if (config->defaultImage == -1) return 0;	tmpl.type = type;
3239	entry = findEntryByIndex(config, config->defaultImage);	tmpl.numElements = 1;
3240	if (!entry) return 0;	tmpl.elements = alloca(sizeof(*tmpl.elements));
3241	if (!suitableImage(entry, bootPrefix, 0, flags)) return 0;	tmpl.elements[0].item = alloca(strlen(val) + 3);
3242		sprintf(tmpl.elements[0].item, "[%s]", val);
3243	line = getLineByType(LT_KERNEL|LT_HYPER, entry->lines);	tmpl.elements[0].indent = "";
3244	if (!line) return 0;	val = NULL;
3245		} else if (type == LT_MENUENTRY) {
3246	rootspec = getRootSpecifier(line->elements[1].item);	char *lineend = "--class gnu-linux --class gnu --class os {";
3247	printf("%s%s\n", bootPrefix, line->elements[1].item +	if (!val) {
3248	((rootspec != NULL) ? strlen(rootspec) : 0));	fprintf(stderr,
3249		"Line type LT_MENUENTRY requires a value\n");
3250		abort();
3251		}
3252		kw = getKeywordByType(type, cfi);
3253		if (!kw) {
3254		fprintf(stderr,
3255		"Looking up keyword for unknown type %d\n",
3256		type);
3257		abort();
3258		}
3259		tmpl.indent = "";
3260		tmpl.type = type;
3261		tmpl.numElements = 3;
3262		tmpl.elements =
3263		alloca(sizeof(*tmpl.elements) * tmpl.numElements);
3264		tmpl.elements[0].item = kw->key;
3265		tmpl.elements[0].indent = alloca(2);
3266		sprintf(tmpl.elements[0].indent, "%c", kw->nextChar);
3267		tmpl.elements[1].item = (char *)val;
3268		tmpl.elements[1].indent = alloca(2);
3269		sprintf(tmpl.elements[1].indent, "%c", kw->nextChar);
3270		tmpl.elements[2].item = alloca(strlen(lineend) + 1);
3271		strcpy(tmpl.elements[2].item, lineend);
3272		tmpl.elements[2].indent = "";
3273		} else {
3274		kw = getKeywordByType(type, cfi);
3275		if (!kw) {
3276		fprintf(stderr,
3277		"Looking up keyword for unknown type %d\n",
3278		type);
3279		abort();
3280		}
3281		tmpl.type = type;
3282		tmpl.numElements = val ? 2 : 1;
3283		tmpl.elements =
3284		alloca(sizeof(*tmpl.elements) * tmpl.numElements);
3285		tmpl.elements[0].item = kw->key;
3286		tmpl.elements[0].indent = alloca(2);
3287		sprintf(tmpl.elements[0].indent, "%c", kw->nextChar);
3288		if (val) {
3289		tmpl.elements[1].item = (char *)val;
3290		tmpl.elements[1].indent = "";
3291		}
3292		}
3293
3294	return 0;	/* The last non-empty line gives us the indention to us and the line
3295	} else if (kernelInfo)	* to insert after. Note that comments are considered empty lines,
3296	return displayInfo(config, kernelInfo, bootPrefix);	* which may not be ideal? If there are no lines or we are looking at
3297		* the first line, we use defaultIndent (the first line is normally
3298		* indented differently from the rest) */
3299		for (line = entry->lines, prev = NULL; line; line = line->next) {
3300		if (line->numElements)
3301		prev = line;
3302		/* fall back on the last line if prev isn't otherwise set */
3303		if (!line->next && !prev)
3304		prev = line;
3305		}
3306
3307		struct singleLine *menuEntry;
3308		menuEntry = getLineByType(LT_MENUENTRY, entry->lines);
3309		if (tmpl.type == LT_ENTRY_END) {
3310		if (menuEntry)
3311		tmpl.indent = menuEntry->indent;
3312		else
3313		tmpl.indent = defaultIndent ? : "";
3314		} else if (tmpl.type != LT_MENUENTRY) {
3315		if (menuEntry)
3316		tmpl.indent = "\t";
3317		else if (prev == entry->lines)
3318		tmpl.indent = defaultIndent ? : "";
3319		else
3320		tmpl.indent = prev->indent;
3321		}
3322
3323	if (copyDefault) {	return addLineTmpl(entry, &tmpl, prev, val, cfi);
3324	template = findTemplate(config, bootPrefix, NULL, 0, flags);	}
	if (!template) return 1;
	}
3325
3326	markRemovedImage(config, removeKernelPath, bootPrefix);	void removeLine(struct singleEntry *entry, struct singleLine *line)
3327	markRemovedImage(config, removeMBKernel, bootPrefix);	{
3328	setDefaultImage(config, newKernelPath != NULL, defaultKernel, makeDefault,	struct singleLine *prev;
3329	bootPrefix, flags);	int i;
3330	setFallbackImage(config, newKernelPath != NULL);
3331	if (updateImage(config, updateKernelPath, bootPrefix, newKernelArgs,	for (i = 0; i < line->numElements; i++) {
3332	removeArgs, newMBKernelArgs, removeMBKernelArgs)) return 1;	free(line->elements[i].item);
3333	if (updateKernelPath && newKernelInitrd) {	free(line->elements[i].indent);
3334	if (updateInitrd(config, updateKernelPath, bootPrefix,	}
3335	newKernelInitrd)) return 1;	free(line->elements);
3336	}	free(line->indent);
3337	if (addNewKernel(config, template, bootPrefix, newKernelPath,
3338	newKernelTitle, newKernelArgs, newKernelInitrd,	if (line == entry->lines) {
3339	extraInitrds, extraInitrdCount,	entry->lines = line->next;
3340	newMBKernel, newMBKernelArgs)) return 1;	} else {
3341		prev = entry->lines;
3342		while (prev->next != line)
3343	if (numEntries(config) == 0) {	prev = prev->next;
3344	fprintf(stderr, _("grubby: doing this would leave no kernel entries. "	prev->next = line->next;
3345	"Not writing out new config.\n"));	}
3346	return 1;
3347	}	free(line);
3348		}
3349
3350		static void requote(struct singleLine *tmplLine, struct configFileInfo *cfi)
3351		{
3352		struct singleLine newLine = {
3353		.indent = tmplLine->indent,
3354		.type = tmplLine->type,
3355		.next = tmplLine->next,
3356		};
3357		int firstQuotedItem = -1;
3358		int quoteLen = 0;
3359		int j;
3360		int element = 0;
3361		char *c;
3362
3363		c = malloc(strlen(tmplLine->elements[0].item) + 1);
3364		strcpy(c, tmplLine->elements[0].item);
3365		insertElement(&newLine, c, element++, cfi);
3366		free(c);
3367		c = NULL;
3368
3369		for (j = 1; j < tmplLine->numElements; j++) {
3370		if (firstQuotedItem == -1) {
3371		quoteLen += strlen(tmplLine->elements[j].item);
3372
3373		if (isquote(tmplLine->elements[j].item[0])) {
3374		firstQuotedItem = j;
3375		quoteLen +=
3376		strlen(tmplLine->elements[j].indent);
3377		} else {
3378		c = malloc(quoteLen + 1);
3379		strcpy(c, tmplLine->elements[j].item);
3380		insertElement(&newLine, c, element++, cfi);
3381		free(c);
3382		quoteLen = 0;
3383		}
3384		} else {
3385		int itemlen = strlen(tmplLine->elements[j].item);
3386		quoteLen += itemlen;
3387		quoteLen += strlen(tmplLine->elements[j].indent);
3388
3389		if (isquote(tmplLine->elements[j].item[itemlen - 1])) {
3390		c = malloc(quoteLen + 1);
3391		c[0] = '\0';
3392		for (int i = firstQuotedItem; i < j + 1; i++) {
3393		strcat(c, tmplLine->elements[i].item);
3394		strcat(c, tmplLine->elements[i].indent);
3395		}
3396		insertElement(&newLine, c, element++, cfi);
3397		free(c);
3398
3399		firstQuotedItem = -1;
3400		quoteLen = 0;
3401		}
3402		}
3403		}
3404		while (tmplLine->numElements)
3405		removeElement(tmplLine, 0);
3406		if (tmplLine->elements)
3407		free(tmplLine->elements);
3408
3409		tmplLine->numElements = newLine.numElements;
3410		tmplLine->elements = newLine.elements;
3411		}
3412
3413		static void insertElement(struct singleLine *line,
3414		const char *item, int insertHere,
3415		struct configFileInfo *cfi)
3416		{
3417		struct keywordTypes *kw;
3418		char indent[2] = "";
3419
3420		/* sanity check */
3421		if (insertHere > line->numElements) {
3422		dbgPrintf
3423		("insertElement() adjusting insertHere from %d to %d\n",
3424		insertHere, line->numElements);
3425		insertHere = line->numElements;
3426		}
3427
3428		line->elements = realloc(line->elements, (line->numElements + 1) *
3429		sizeof(*line->elements));
3430		memmove(&line->elements[insertHere + 1],
3431		&line->elements[insertHere],
3432		(line->numElements - insertHere) * sizeof(*line->elements));
3433		line->elements[insertHere].item = strdup(item);
3434
3435		kw = getKeywordByType(line->type, cfi);
3436
3437		if (line->numElements == 0) {
3438		indent[0] = '\0';
3439		} else if (insertHere == 0) {
3440		indent[0] = kw->nextChar;
3441		} else if (kw->separatorChar != '\0') {
3442		indent[0] = kw->separatorChar;
3443		} else {
3444		indent[0] = ' ';
3445		}
3446
3447		if (insertHere > 0 && line->elements[insertHere - 1].indent[0] == '\0') {
3448		/* move the end-of-line forward */
3449		line->elements[insertHere].indent =
3450		line->elements[insertHere - 1].indent;
3451		line->elements[insertHere - 1].indent = strdup(indent);
3452		} else {
3453		line->elements[insertHere].indent = strdup(indent);
3454		}
3455
3456		line->numElements++;
3457
3458		dbgPrintf("insertElement(%s, '%s%s', %d)\n",
3459		line->elements[0].item,
3460		line->elements[insertHere].item,
3461		line->elements[insertHere].indent, insertHere);
3462		}
3463
3464		static void removeElement(struct singleLine *line, int removeHere)
3465		{
3466		int i;
3467
3468		/* sanity check */
3469		if (removeHere >= line->numElements)
3470		return;
3471
3472		dbgPrintf("removeElement(%s, %d:%s)\n", line->elements[0].item,
3473		removeHere, line->elements[removeHere].item);
3474
3475		free(line->elements[removeHere].item);
3476
3477		if (removeHere > 1) {
3478		/* previous argument gets this argument's post-indentation */
3479		free(line->elements[removeHere - 1].indent);
3480		line->elements[removeHere - 1].indent =
3481		line->elements[removeHere].indent;
3482		} else {
3483		free(line->elements[removeHere].indent);
3484		}
3485
3486		/* now collapse the array, but don't bother to realloc smaller */
3487		for (i = removeHere; i < line->numElements - 1; i++)
3488		line->elements[i] = line->elements[i + 1];
3489
3490		line->numElements--;
3491		}
3492
3493		int argMatch(const char *one, const char *two)
3494		{
3495		char *first, *second;
3496		char *chptr;
3497
3498		first = strcpy(alloca(strlen(one) + 1), one);
3499		second = strcpy(alloca(strlen(two) + 1), two);
3500
3501		chptr = strchr(first, '=');
3502		if (chptr)
3503		*chptr = '\0';
3504
3505		chptr = strchr(second, '=');
3506		if (chptr)
3507		*chptr = '\0';
3508
3509		return strcmp(first, second);
3510		}
3511
3512		int updateActualImage(struct grubConfig *cfg, const char *image,
3513		const char *prefix, const char *addArgs,
3514		const char *removeArgs, int multibootArgs)
3515		{
3516		struct singleEntry *entry;
3517		struct singleLine *line, *rootLine;
3518		int index = 0;
3519		int i, k;
3520		const char **newArgs, **oldArgs;
3521		const char **arg;
3522		int useKernelArgs, useRoot;
3523		int firstElement;
3524		int *usedElements;
3525		int doreplace;
3526
3527		if (!image)
3528		return 0;
3529
3530		if (!addArgs) {
3531		newArgs = malloc(sizeof(*newArgs));
3532		*newArgs = NULL;
3533		} else {
3534		if (poptParseArgvString(addArgs, NULL, &newArgs)) {
3535		fprintf(stderr,
3536		_("grubby: error separating arguments '%s'\n"),
3537		addArgs);
3538		return 1;
3539		}
3540		}
3541
3542		if (!removeArgs) {
3543		oldArgs = malloc(sizeof(*oldArgs));
3544		*oldArgs = NULL;
3545		} else {
3546		if (poptParseArgvString(removeArgs, NULL, &oldArgs)) {
3547		fprintf(stderr,
3548		_("grubby: error separating arguments '%s'\n"),
3549		removeArgs);
3550		free(newArgs);
3551		return 1;
3552		}
3553		}
3554
3555		useKernelArgs = (getKeywordByType(LT_KERNELARGS, cfg->cfi)
3556		&& (!multibootArgs || cfg->cfi->mbConcatArgs));
3557
3558		useRoot = (getKeywordByType(LT_ROOT, cfg->cfi)
3559		&& !multibootArgs);
3560
3561		for (; (entry = findEntryByPath(cfg, image, prefix, &index)); index++) {
3562
3563		if (multibootArgs && !entry->multiboot)
3564		continue;
3565
3566		/* Determine where to put the args.  If this config supports
3567		* LT_KERNELARGS, use that.  Otherwise use
3568		* LT_HYPER/LT_KERNEL/LT_MBMODULE lines.
3569		*/
3570		if (useKernelArgs) {
3571		line = getLineByType(LT_KERNELARGS, entry->lines);
3572		if (!line) {
3573		/* no LT_KERNELARGS, need to add it */
3574		line = addLine(entry, cfg->cfi, LT_KERNELARGS,
3575		cfg->secondaryIndent, NULL);
3576		}
3577		firstElement = 1;
3578
3579		} else if (multibootArgs) {
3580		line = getLineByType(LT_HYPER, entry->lines);
3581		if (!line) {
3582		/* a multiboot entry without LT_HYPER? */
3583		continue;
3584		}
3585		firstElement = 2;
3586
3587		} else {
3588		line =
3589		getLineByType(LT_KERNEL | LT_MBMODULE |
3590		LT_KERNEL_EFI | LT_KERNEL_16,
3591		entry->lines);
3592		if (!line) {
3593		/* no LT_KERNEL or LT_MBMODULE in this entry? */
3594		continue;
3595		}
3596		firstElement = 2;
3597		}
3598
3599		/* handle the elilo case which does:
3600		*   append="hypervisor args -- kernel args"
3601		*/
3602		if (entry->multiboot && cfg->cfi->mbConcatArgs) {
3603		/* this is a multiboot entry, make sure there's
3604		* -- on the args line
3605		*/
3606		for (i = firstElement; i < line->numElements; i++) {
3607		if (!strcmp(line->elements[i].item, "--"))
3608		break;
3609		}
3610		if (i == line->numElements) {
3611		/* assume all existing args are kernel args,
3612		* prepend -- to make it official
3613		*/
3614		insertElement(line, "--", firstElement,
3615		cfg->cfi);
3616		i = firstElement;
3617		}
3618		if (!multibootArgs) {
3619		/* kernel args start after the -- */
3620		firstElement = i + 1;
3621		}
3622		} else if (cfg->cfi->mbConcatArgs) {
3623		/* this is a non-multiboot entry, remove hyper args */
3624		for (i = firstElement; i < line->numElements; i++) {
3625		if (!strcmp(line->elements[i].item, "--"))
3626		break;
3627		}
3628		if (i < line->numElements) {
3629		/* remove args up to -- */
3630		while (strcmp
3631		(line->elements[firstElement].item,
3632		"--"))
3633		removeElement(line, firstElement);
3634		/* remove -- */
3635		removeElement(line, firstElement);
3636		}
3637		}
3638
3639		usedElements = calloc(line->numElements, sizeof(*usedElements));
3640
3641		for (k = 0, arg = newArgs; *arg; arg++, k++) {
3642
3643		doreplace = 1;
3644		for (i = firstElement; i < line->numElements; i++) {
3645		if (multibootArgs && cfg->cfi->mbConcatArgs &&
3646		!strcmp(line->elements[i].item, "--")) {
3647		/* reached the end of hyper args, insert here */
3648		doreplace = 0;
3649		break;
3650		}
3651		if (usedElements[i])
3652		continue;
3653		if (!argMatch(line->elements[i].item, *arg)) {
3654		usedElements[i] = 1;
3655		break;
3656		}
3657		}
3658
3659		if (i < line->numElements && doreplace) {
3660		/* direct replacement */
3661		free(line->elements[i].item);
3662		line->elements[i].item = strdup(*arg);
3663
3664		} else if (useRoot && !strncmp(*arg, "root=/dev/", 10)) {
3665		/* root= replacement */
3666		rootLine = getLineByType(LT_ROOT, entry->lines);
3667		if (rootLine) {
3668		free(rootLine->elements[1].item);
3669		rootLine->elements[1].item =
3670		strdup(*arg + 5);
3671		} else {
3672		rootLine =
3673		addLine(entry, cfg->cfi, LT_ROOT,
3674		cfg->secondaryIndent,
3675		*arg + 5);
3676		}
3677		}
3678
3679		else {
3680		/* insert/append */
3681		insertElement(line, *arg, i, cfg->cfi);
3682		usedElements =
3683		realloc(usedElements,
3684		line->numElements *
3685		sizeof(*usedElements));
3686		memmove(&usedElements[i + 1], &usedElements[i],
3687		line->numElements - i - 1);
3688		usedElements[i] = 1;
3689
3690		/* if we updated a root= here even though
3691		* there is a LT_ROOT available we need to
3692		* remove the LT_ROOT entry (this will happen
3693		* if we switch from a device to a label) */
3694		if (useRoot && !strncmp(*arg, "root=", 5)) {
3695		rootLine =
3696		getLineByType(LT_ROOT,
3697		entry->lines);
3698		if (rootLine)
3699		removeLine(entry, rootLine);
3700		}
3701		}
3702		}
3703
3704		free(usedElements);
3705
3706		for (arg = oldArgs; *arg; arg++) {
3707		for (i = firstElement; i < line->numElements; i++) {
3708		if (multibootArgs && cfg->cfi->mbConcatArgs &&
3709		!strcmp(line->elements[i].item, "--"))
3710		/* reached the end of hyper args, stop here */
3711		break;
3712		if (!argMatch(line->elements[i].item, *arg)) {
3713		removeElement(line, i);
3714		break;
3715		}
3716		}
3717		/* handle removing LT_ROOT line too */
3718		if (useRoot && !strncmp(*arg, "root=", 5)) {
3719		rootLine = getLineByType(LT_ROOT, entry->lines);
3720		if (rootLine)
3721		removeLine(entry, rootLine);
3722		}
3723		}
3724
3725		if (line->numElements == 1) {
3726		/* don't need the line at all (note it has to be a
3727		LT_KERNELARGS for this to happen */
3728		removeLine(entry, line);
3729		}
3730		}
3731
3732		free(newArgs);
3733		free(oldArgs);
3734
3735		return 0;
3736		}
3737
3738		int updateImage(struct grubConfig *cfg, const char *image,
3739		const char *prefix, const char *addArgs,
3740		const char *removeArgs,
3741		const char *addMBArgs, const char *removeMBArgs)
3742		{
3743		int rc = 0;
3744
3745		if (!image)
3746		return rc;
3747
3748		/* update the main args first... */
3749		if (addArgs || removeArgs)
3750		rc = updateActualImage(cfg, image, prefix, addArgs, removeArgs,
3751		0);
3752		if (rc)
3753		return rc;
3754
3755		/* and now any multiboot args */
3756		if (addMBArgs || removeMBArgs)
3757		rc = updateActualImage(cfg, image, prefix, addMBArgs,
3758		removeMBArgs, 1);
3759		return rc;
3760		}
3761
3762		int addMBInitrd(struct grubConfig *cfg, const char *newMBKernel,
3763		const char *image, const char *prefix, const char *initrd,
3764		const char *title)
3765		{
3766		struct singleEntry *entry;
3767		struct singleLine *line, *kernelLine, *endLine = NULL;
3768		int index = 0;
3769
3770		if (!image)
3771		return 0;
3772
3773		for (; (entry = findEntryByPath(cfg, image, prefix, &index)); index++) {
3774		kernelLine = getLineByType(LT_MBMODULE, entry->lines);
3775		if (!kernelLine)
3776		continue;
3777
3778		/* if title is supplied, the entry's title must match it. */
3779		if (title) {
3780		char *linetitle;
3781
3782		line =
3783		getLineByType(LT_TITLE | LT_MENUENTRY,
3784		entry->lines);
3785		if (!line)
3786		continue;
3787
3788		linetitle = extractTitle(cfg, line);
3789		if (!linetitle)
3790		continue;
3791		if (strcmp(title, linetitle)) {
3792		free(linetitle);
3793		continue;
3794		}
3795		free(linetitle);
3796		}
3797
3798		if (prefix) {
3799		int prefixLen = strlen(prefix);
3800		if (!strncmp(initrd, prefix, prefixLen))
3801		initrd += prefixLen;
3802		}
3803		endLine = getLineByType(LT_ENTRY_END, entry->lines);
3804		if (endLine)
3805		removeLine(entry, endLine);
3806		line =
3807		addLine(entry, cfg->cfi,
3808		preferredLineType(LT_MBMODULE, cfg->cfi),
3809		kernelLine->indent, initrd);
3810		if (!line)
3811		return 1;
3812		if (endLine) {
3813		line = addLine(entry, cfg->cfi, LT_ENTRY_END, "", NULL);
3814		if (!line)
3815		return 1;
3816		}
3817
3818		break;
3819		}
3820
3821		return 0;
3822		}
3823
3824		int updateInitrd(struct grubConfig *cfg, const char *image,
3825		const char *prefix, const char *initrd, const char *title)
3826		{
3827		struct singleEntry *entry;
3828		struct singleLine *line, *kernelLine, *endLine = NULL;
3829		int index = 0;
3830
3831		if (!image)
3832		return 0;
3833
3834		for (; (entry = findEntryByPath(cfg, image, prefix, &index)); index++) {
3835		kernelLine =
3836		getLineByType(LT_KERNEL | LT_KERNEL_EFI | LT_KERNEL_16,
3837		entry->lines);
3838		if (!kernelLine)
3839		continue;
3840
3841		/* if title is supplied, the entry's title must match it. */
3842		if (title) {
3843		char *linetitle;
3844
3845		line =
3846		getLineByType(LT_TITLE | LT_MENUENTRY,
3847		entry->lines);
3848		if (!line)
3849		continue;
3850
3851		linetitle = extractTitle(cfg, line);
3852		if (!linetitle)
3853		continue;
3854		if (strcmp(title, linetitle)) {
3855		free(linetitle);
3856		continue;
3857		}
3858		free(linetitle);
3859		}
3860
3861		line =
3862		getLineByType(LT_INITRD | LT_INITRD_EFI | LT_INITRD_16,
3863		entry->lines);
3864		if (line)
3865		removeLine(entry, line);
3866		if (prefix) {
3867		int prefixLen = strlen(prefix);
3868		if (!strncmp(initrd, prefix, prefixLen))
3869		initrd += prefixLen;
3870		}
3871		endLine = getLineByType(LT_ENTRY_END, entry->lines);
3872		if (endLine)
3873		removeLine(entry, endLine);
3874		enum lineType_e lt;
3875		switch (kernelLine->type) {
3876		case LT_KERNEL:
3877		lt = LT_INITRD;
3878		break;
3879		case LT_KERNEL_EFI:
3880		lt = LT_INITRD_EFI;
3881		break;
3882		case LT_KERNEL_16:
3883		lt = LT_INITRD_16;
3884		break;
3885		default:
3886		lt = preferredLineType(LT_INITRD, cfg->cfi);
3887		}
3888		line = addLine(entry, cfg->cfi, lt, kernelLine->indent, initrd);
3889		if (!line)
3890		return 1;
3891		if (endLine) {
3892		line = addLine(entry, cfg->cfi, LT_ENTRY_END, "", NULL);
3893		if (!line)
3894		return 1;
3895		}
3896
3897		break;
3898		}
3899
3900		return 0;
3901		}
3902
3903		int checkDeviceBootloader(const char *device, const unsigned char *boot)
3904		{
3905		int fd;
3906		unsigned char bootSect[512];
3907		int offset;
3908
3909		fd = open(device, O_RDONLY);
3910		if (fd < 0) {
3911		fprintf(stderr, _("grubby: unable to open %s: %s\n"),
3912		device, strerror(errno));
3913		return 1;
3914		}
3915
3916		if (read(fd, bootSect, 512) != 512) {
3917		fprintf(stderr, _("grubby: unable to read %s: %s\n"),
3918		device, strerror(errno));
3919		return 1;
3920		}
3921		close(fd);
3922
3923		/* first three bytes should match, a jmp short should be in there */
3924		if (memcmp(boot, bootSect, 3))
3925		return 0;
3926
3927		if (boot[1] == JMP_SHORT_OPCODE) {
3928		offset = boot[2] + 2;
3929		} else if (boot[1] == 0xe8 || boot[1] == 0xe9) {
3930		offset = (boot[3] << 8) + boot[2] + 2;
3931		} else if (boot[0] == JMP_SHORT_OPCODE) {
3932		offset = boot[1] + 2;
3933		/*
3934		* it looks like grub, when copying stage1 into the mbr,
3935		* patches stage1 right after the JMP location, replacing
3936		* other instructions such as JMPs for NOOPs. So, relax the
3937		* check a little bit by skipping those different bytes.
3938		*/
3939		if ((bootSect[offset + 1] == NOOP_OPCODE)
3940		&& (bootSect[offset + 2] == NOOP_OPCODE)) {
3941		offset = offset + 3;
3942		}
3943		} else if (boot[0] == 0xe8 || boot[0] == 0xe9) {
3944		offset = (boot[2] << 8) + boot[1] + 2;
3945		} else {
3946		return 0;
3947		}
3948
3949		if (memcmp(boot + offset, bootSect + offset, CODE_SEG_SIZE))
3950		return 0;
3951
3952		return 2;
3953		}
3954
3955		int checkLiloOnRaid(char *mdDev, const unsigned char *boot)
3956		{
3957		int fd;
3958		char buf[65536];
3959		char *end;
3960		char *chptr;
3961		char *chptr2;
3962		int rc;
3963
3964		/* it's on raid; we need to parse /proc/mdstat and check all of the
3965		*raw* devices listed in there */
3966
3967		if (!strncmp(mdDev, "/dev/", 5))
3968		mdDev += 5;
3969
3970		if ((fd = open("/proc/mdstat", O_RDONLY)) < 0) {
3971		fprintf(stderr, _("grubby: failed to open /proc/mdstat: %s\n"),
3972		strerror(errno));
3973		return 2;
3974		}
3975
3976		rc = read(fd, buf, sizeof(buf) - 1);
3977		if (rc < 0 || rc == (sizeof(buf) - 1)) {
3978		fprintf(stderr, _("grubby: failed to read /proc/mdstat: %s\n"),
3979		strerror(errno));
3980		close(fd);
3981		return 2;
3982		}
3983		close(fd);
3984		buf[rc] = '\0';
3985
3986		chptr = buf;
3987		while (*chptr) {
3988		end = strchr(chptr, '\n');
3989		if (!end)
3990		break;
3991		*end = '\0';
3992
3993		if (!strncmp(chptr, mdDev, strlen(mdDev)) &&
3994		chptr[strlen(mdDev)] == ' ') {
3995
3996		/* found the device */
3997		while (*chptr && *chptr != ':')
3998		chptr++;
3999		chptr++;
4000		while (*chptr && isspace(*chptr))
4001		chptr++;
4002
4003		/* skip the "active" bit */
4004		while (*chptr && !isspace(*chptr))
4005		chptr++;
4006		while (*chptr && isspace(*chptr))
4007		chptr++;
4008
4009		/* skip the raid level */
4010		while (*chptr && !isspace(*chptr))
4011		chptr++;
4012		while (*chptr && isspace(*chptr))
4013		chptr++;
4014
4015		/* everything else is partition stuff */
4016		while (*chptr) {
4017		chptr2 = chptr;
4018		while (*chptr2 && *chptr2 != '[')
4019		chptr2++;
4020		if (!*chptr2)
4021		break;
4022
4023		/* yank off the numbers at the end */
4024		chptr2--;
4025		while (isdigit(*chptr2) && chptr2 > chptr)
4026		chptr2--;
4027		chptr2++;
4028		*chptr2 = '\0';
4029
4030		/* Better, now we need the /dev/ back. We're
4031		* done with everything before this point, so
4032		* we can just put the /dev/ part there.
4033		* There will always be room. */
4034		memcpy(chptr - 5, "/dev/", 5);
4035		rc = checkDeviceBootloader(chptr - 5, boot);
4036		if (rc != 2) {
4037		return rc;
4038		}
4039
4040		chptr = chptr2 + 1;
4041		/* skip the [11] bit */
4042		while (*chptr && !isspace(*chptr))
4043		chptr++;
4044		/* and move to the next one */
4045		while (*chptr && isspace(*chptr))
4046		chptr++;
4047		}
4048
4049		/*  we're good to go */
4050		return 2;
4051		}
4052
4053		chptr = end + 1;
4054		}
4055
4056		fprintf(stderr,
4057		_("grubby: raid device /dev/%s not found in /proc/mdstat\n"),
4058		mdDev);
4059		return 0;
4060		}
4061
4062		int checkForLilo(struct grubConfig *config)
4063		{
4064		int fd;
4065		unsigned char boot[512];
4066		struct singleLine *line;
4067
4068		for (line = config->theLines; line; line = line->next)
4069		if (line->type == LT_BOOT)
4070		break;
4071
4072		if (!line) {
4073		fprintf(stderr,
4074		_
4075		("grubby: no boot line found in lilo configuration\n"));
4076		return 1;
4077		}
4078
4079		if (line->numElements != 2)
4080		return 1;
4081
4082		fd = open("/boot/boot.b", O_RDONLY);
4083		if (fd < 0) {
4084		fprintf(stderr, _("grubby: unable to open %s: %s\n"),
4085		"/boot/boot.b", strerror(errno));
4086		return 1;
4087		}
4088
4089		if (read(fd, boot, 512) != 512) {
4090		fprintf(stderr, _("grubby: unable to read %s: %s\n"),
4091		"/boot/boot.b", strerror(errno));
4092		return 1;
4093		}
4094		close(fd);
4095
4096		if (!strncmp("/dev/md", line->elements[1].item, 7))
4097		return checkLiloOnRaid(line->elements[1].item, boot);
4098
4099		return checkDeviceBootloader(line->elements[1].item, boot);
4100		}
4101
4102		int checkForGrub2(struct grubConfig *config)
4103		{
4104		if (!access("/etc/grub.d/", R_OK))
4105		return 2;
4106
4107		return 1;
4108		}
4109
4110		int checkForGrub(struct grubConfig *config)
4111		{
4112		int fd;
4113		unsigned char bootSect[512];
4114		char *boot;
4115		int onSuse = isSuseSystem();
4116
4117		if (onSuse) {
4118		if (parseSuseGrubConf(NULL, &boot))
4119		return 0;
4120		} else {
4121		if (parseSysconfigGrub(NULL, &boot))
4122		return 0;
4123		}
4124
4125		/* assume grub is not installed -- not an error condition */
4126		if (!boot)
4127		return 0;
4128
4129		fd = open("/boot/grub/stage1", O_RDONLY);
4130		if (fd < 0)
4131		/* this doesn't exist if grub hasn't been installed */
4132		return 0;
4133
4134		if (read(fd, bootSect, 512) != 512) {
4135		fprintf(stderr, _("grubby: unable to read %s: %s\n"),
4136		"/boot/grub/stage1", strerror(errno));
4137		close(fd);
4138		return 1;
4139		}
4140		close(fd);
4141
4142		/* The more elaborate checks do not work on SuSE. The checks done
4143		* seem to be reasonble (at least for now), so just return success
4144		*/
4145		if (onSuse)
4146		return 2;
4147
4148		return checkDeviceBootloader(boot, bootSect);
4149		}
4150
4151		int checkForExtLinux(struct grubConfig *config)
4152		{
4153		int fd;
4154		unsigned char bootSect[512];
4155		char *boot;
4156		char executable[] = "/boot/extlinux/extlinux";
4157
4158		printf("entered: checkForExtLinux()\n");
4159
4160		if (parseSysconfigGrub(NULL, &boot))
4161		return 0;
4162
4163		/* assume grub is not installed -- not an error condition */
4164		if (!boot)
4165		return 0;
4166
4167		fd = open(executable, O_RDONLY);
4168		if (fd < 0)
4169		/* this doesn't exist if grub hasn't been installed */
4170		return 0;
4171
4172		if (read(fd, bootSect, 512) != 512) {
4173		fprintf(stderr, _("grubby: unable to read %s: %s\n"),
4174		executable, strerror(errno));
4175		return 1;
4176		}
4177		close(fd);
4178
4179		return checkDeviceBootloader(boot, bootSect);
4180		}
4181
4182		int checkForYaboot(struct grubConfig *config)
4183		{
4184		/*
4185		* This is a simplistic check that we consider good enough for own puporses
4186		*
4187		* If we were to properly check if yaboot is *installed* we'd need to:
4188		* 1) get the system boot device (LT_BOOT)
4189		* 2) considering it's a raw filesystem, check if the yaboot binary matches
4190		*    the content on the boot device
4191		* 3) if not, copy the binary to a temporary file and run "addnote" on it
4192		* 4) check again if binary and boot device contents match
4193		*/
4194		if (!access("/etc/yaboot.conf", R_OK))
4195		return 2;
4196
4197		return 1;
4198		}
4199
4200		int checkForElilo(struct grubConfig *config)
4201		{
4202		if (!access("/etc/elilo.conf", R_OK))
4203		return 2;
4204
4205		return 1;
4206		}
4207
4208		static char *getRootSpecifier(char *str)
4209		{
4210		char *idx, *rootspec = NULL;
4211
4212		if (*str == '(') {
4213		idx = rootspec = strdup(str);
4214		while (*idx && (*idx != ')') && (!isspace(*idx)))
4215		idx++;
4216		*(++idx) = '\0';
4217		}
4218		return rootspec;
4219		}
4220
4221		static char *getInitrdVal(struct grubConfig *config,
4222		const char *prefix, struct singleLine *tmplLine,
4223		const char *newKernelInitrd,
4224		const char **extraInitrds, int extraInitrdCount)
4225		{
4226		char *initrdVal, *end;
4227		int i;
4228		size_t totalSize;
4229		size_t prefixLen;
4230		char separatorChar;
4231
4232		prefixLen = strlen(prefix);
4233		totalSize = strlen(newKernelInitrd) - prefixLen + 1 /* \0 */ ;
4234
4235		for (i = 0; i < extraInitrdCount; i++) {
4236		totalSize += sizeof(separatorChar);
4237		totalSize += strlen(extraInitrds[i]) - prefixLen;
4238		}
4239
4240		initrdVal = end = malloc(totalSize);
4241
4242		end = stpcpy(end, newKernelInitrd + prefixLen);
4243
4244		separatorChar = getKeywordByType(LT_INITRD, config->cfi)->separatorChar;
4245		for (i = 0; i < extraInitrdCount; i++) {
4246		const char *extraInitrd;
4247		int j;
4248
4249		extraInitrd = extraInitrds[i] + prefixLen;
4250		/* Don't add entries that are already there */
4251		if (tmplLine != NULL) {
4252		for (j = 2; j < tmplLine->numElements; j++)
4253		if (strcmp
4254		(extraInitrd,
4255		tmplLine->elements[j].item) == 0)
4256		break;
4257
4258		if (j != tmplLine->numElements)
4259		continue;
4260		}
4261
4262		*end++ = separatorChar;
4263		end = stpcpy(end, extraInitrd);
4264		}
4265
4266		return initrdVal;
4267		}
4268
4269		int addNewKernel(struct grubConfig *config, struct singleEntry *template,
4270		const char *prefix,
4271		const char *newKernelPath, const char *newKernelTitle,
4272		const char *newKernelArgs, const char *newKernelInitrd,
4273		const char **extraInitrds, int extraInitrdCount,
4274		const char *newMBKernel, const char *newMBKernelArgs,
4275		const char *newDevTreePath, int newIndex)
4276		{
4277		struct singleEntry *new, *entry, *prev = NULL;
4278		struct singleLine *newLine = NULL, *tmplLine = NULL, *masterLine = NULL;
4279		int needs;
4280		char *indexs;
4281		char *chptr;
4282		int rc;
4283
4284		if (!newKernelPath)
4285		return 0;
4286
4287		rc = asprintf(&indexs, "%d", newIndex);
4288		if (rc < 0)
4289		return 1;
4290
4291		/* if the newKernelTitle is too long silently munge it into something
4292		* we can live with. truncating is first check, then we'll just mess with
4293		* it until it looks better */
4294		if (config->cfi->maxTitleLength &&
4295		(strlen(newKernelTitle) > config->cfi->maxTitleLength)) {
4296		char *buf = alloca(config->cfi->maxTitleLength + 7);
4297		char *numBuf = alloca(config->cfi->maxTitleLength + 1);
4298		int i = 1;
4299
4300		sprintf(buf, "TITLE=%.*s", config->cfi->maxTitleLength,
4301		newKernelTitle);
4302		while (findEntryByPath(config, buf, NULL, NULL)) {
4303		sprintf(numBuf, "%d", i++);
4304		strcpy(buf + strlen(buf) - strlen(numBuf), numBuf);
4305		}
4306
4307		newKernelTitle = buf + 6;
4308		}
4309
4310		new = malloc(sizeof(*new));
4311		new->skip = 0;
4312		new->multiboot = 0;
4313		new->lines = NULL;
4314		entry = config->entries;
4315		for (unsigned int i = 0; i < newIndex; i++) {
4316		if (!entry)
4317		break;
4318		prev = entry;
4319		entry = entry->next;
4320		}
4321		new->next = entry;
4322
4323		if (prev)
4324		prev->next = new;
4325		else
4326		config->entries = new;
4327
4328		/* copy/update from the template */
4329		needs = NEED_KERNEL | NEED_TITLE;
4330		if (newKernelInitrd)
4331		needs |= NEED_INITRD;
4332		if (newMBKernel) {
4333		needs |= NEED_MB;
4334		new->multiboot = 1;
4335		}
4336		if (newDevTreePath && getKeywordByType(LT_DEVTREE, config->cfi))
4337		needs |= NEED_DEVTREE;
4338
4339		if (template) {
4340		for (masterLine = template->lines;
4341		masterLine && (tmplLine = lineDup(masterLine));
4342		lineFree(tmplLine), masterLine = masterLine->next) {
4343		dbgPrintf("addNewKernel processing %d\n",
4344		tmplLine->type);
4345
4346		/* skip comments */
4347		chptr = tmplLine->indent;
4348		while (*chptr && isspace(*chptr))
4349		chptr++;
4350		if (*chptr == '#')
4351		continue;
4352
4353		if (iskernel(tmplLine->type)
4354		&& tmplLine->numElements >= 2) {
4355		if (!template->multiboot && (needs & NEED_MB)) {
4356		/* it's not a multiboot template and
4357		* this is the kernel line.  Try to
4358		* be intelligent about inserting the
4359		* hypervisor at the same time.
4360		*/
4361		if (config->cfi->mbHyperFirst) {
4362		/* insert the hypervisor first */
4363		newLine =
4364		addLine(new, config->cfi,
4365		LT_HYPER,
4366		tmplLine->indent,
4367		newMBKernel +
4368		strlen(prefix));
4369		/* set up for adding the
4370		* kernel line */
4371		free(tmplLine->indent);
4372		tmplLine->indent =
4373		strdup(config->
4374		secondaryIndent);
4375		needs &= ~NEED_MB;
4376		}
4377		if (needs & NEED_KERNEL) {
4378		/* use addLineTmpl to
4379		* preserve line elements,
4380		* otherwise we could just
4381		* call addLine.
4382		* Unfortunately this means
4383		* making some changes to the
4384		* template such as the
4385		* indent change above and
4386		* the type change below.
4387		*/
4388		struct keywordTypes *mbm_kw =
4389		getKeywordByType
4390		(LT_MBMODULE, config->cfi);
4391		if (mbm_kw) {
4392		tmplLine->type =
4393		LT_MBMODULE;
4394		free(tmplLine->
4395		elements[0].item);
4396		tmplLine->elements[0].
4397		item =
4398		strdup(mbm_kw->key);
4399		}
4400		newLine =
4401		addLineTmpl(new, tmplLine,
4402		newLine,
4403		newKernelPath +
4404		strlen(prefix),
4405		config->cfi);
4406		needs &= ~NEED_KERNEL;
4407		}
4408		if (needs & NEED_MB) { /* !mbHyperFirst */
4409		newLine =
4410		addLine(new, config->cfi,
4411		LT_HYPER,
4412		config->
4413		secondaryIndent,
4414		newMBKernel +
4415		strlen(prefix));
4416		needs &= ~NEED_MB;
4417		}
4418		} else if (needs & NEED_KERNEL) {
4419		newLine =
4420		addLineTmpl(new, tmplLine, newLine,
4421		newKernelPath +
4422		strlen(prefix),
4423		config->cfi);
4424		needs &= ~NEED_KERNEL;
4425		}
4426
4427		} else if (tmplLine->type == LT_HYPER &&
4428		tmplLine->numElements >= 2) {
4429		if (needs & NEED_MB) {
4430		newLine =
4431		addLineTmpl(new, tmplLine, newLine,
4432		newMBKernel +
4433		strlen(prefix),
4434		config->cfi);
4435		needs &= ~NEED_MB;
4436		}
4437
4438		} else if (tmplLine->type == LT_MBMODULE &&
4439		tmplLine->numElements >= 2) {
4440		if (new->multiboot) {
4441		if (needs & NEED_KERNEL) {
4442		newLine =
4443		addLineTmpl(new, tmplLine,
4444		newLine,
4445		newKernelPath +
4446		strlen(prefix),
4447		config->cfi);
4448		needs &= ~NEED_KERNEL;
4449		} else if (config->cfi->mbInitRdIsModule
4450		&& (needs & NEED_INITRD)) {
4451		char *initrdVal;
4452		initrdVal =
4453		getInitrdVal(config, prefix,
4454		tmplLine,
4455		newKernelInitrd,
4456		extraInitrds,
4457		extraInitrdCount);
4458		newLine =
4459		addLineTmpl(new, tmplLine,
4460		newLine,
4461		initrdVal,
4462		config->cfi);
4463		free(initrdVal);
4464		needs &= ~NEED_INITRD;
4465		}
4466		} else if (needs & NEED_KERNEL) {
4467		/* template is multi but new is not,
4468		* insert the kernel in the first
4469		* module slot
4470		*/
4471		tmplLine->type =
4472		preferredLineType(LT_KERNEL,
4473		config->cfi);
4474		free(tmplLine->elements[0].item);
4475		tmplLine->elements[0].item =
4476		strdup(getKeywordByType
4477		(tmplLine->type,
4478		config->cfi)->key);
4479		newLine =
4480		addLineTmpl(new, tmplLine, newLine,
4481		newKernelPath +
4482		strlen(prefix),
4483		config->cfi);
4484		needs &= ~NEED_KERNEL;
4485		} else if (needs & NEED_INITRD) {
4486		char *initrdVal;
4487		/* template is multi but new is not,
4488		* insert the initrd in the second
4489		* module slot
4490		*/
4491		tmplLine->type =
4492		preferredLineType(LT_INITRD,
4493		config->cfi);
4494		free(tmplLine->elements[0].item);
4495		tmplLine->elements[0].item =
4496		strdup(getKeywordByType
4497		(tmplLine->type,
4498		config->cfi)->key);
4499		initrdVal =
4500		getInitrdVal(config, prefix,
4501		tmplLine,
4502		newKernelInitrd,
4503		extraInitrds,
4504		extraInitrdCount);
4505		newLine =
4506		addLineTmpl(new, tmplLine, newLine,
4507		initrdVal, config->cfi);
4508		free(initrdVal);
4509		needs &= ~NEED_INITRD;
4510		}
4511
4512		} else if (isinitrd(tmplLine->type)
4513		&& tmplLine->numElements >= 2) {
4514		if (needs & NEED_INITRD && new->multiboot
4515		&& !template->multiboot
4516		&& config->cfi->mbInitRdIsModule) {
4517		/* make sure we don't insert the
4518		* module initrd before the module
4519		* kernel... if we don't do it here,
4520		* it will be inserted following the
4521		* template.
4522		*/
4523		if (!needs & NEED_KERNEL) {
4524		char *initrdVal;
4525
4526		initrdVal =
4527		getInitrdVal(config, prefix,
4528		tmplLine,
4529		newKernelInitrd,
4530		extraInitrds,
4531		extraInitrdCount);
4532		newLine =
4533		addLine(new, config->cfi,
4534		LT_MBMODULE,
4535		config->
4536		secondaryIndent,
4537		initrdVal);
4538		free(initrdVal);
4539		needs &= ~NEED_INITRD;
4540		}
4541		} else if (needs & NEED_INITRD) {
4542		char *initrdVal;
4543		initrdVal =
4544		getInitrdVal(config, prefix,
4545		tmplLine,
4546		newKernelInitrd,
4547		extraInitrds,
4548		extraInitrdCount);
4549		newLine =
4550		addLineTmpl(new, tmplLine, newLine,
4551		initrdVal, config->cfi);
4552		free(initrdVal);
4553		needs &= ~NEED_INITRD;
4554		}
4555
4556		} else if (tmplLine->type == LT_MENUENTRY &&
4557		(needs & NEED_TITLE)) {
4558		requote(tmplLine, config->cfi);
4559		char *nkt = malloc(strlen(newKernelTitle) + 3);
4560		strcpy(nkt, "'");
4561		strcat(nkt, newKernelTitle);
4562		strcat(nkt, "'");
4563		newLine =
4564		addLineTmpl(new, tmplLine, newLine, nkt,
4565		config->cfi);
4566		free(nkt);
4567		needs &= ~NEED_TITLE;
4568		} else if (tmplLine->type == LT_TITLE &&
4569		(needs & NEED_TITLE)) {
4570		if (tmplLine->numElements >= 2) {
4571		newLine =
4572		addLineTmpl(new, tmplLine, newLine,
4573		newKernelTitle,
4574		config->cfi);
4575		needs &= ~NEED_TITLE;
4576		} else if (tmplLine->numElements == 1 &&
4577		config->cfi->titleBracketed) {
4578		/* addLineTmpl doesn't handle
4579		* titleBracketed */
4580		newLine =
4581		addLine(new, config->cfi, LT_TITLE,
4582		tmplLine->indent,
4583		newKernelTitle);
4584		needs &= ~NEED_TITLE;
4585		}
4586		} else if (tmplLine->type == LT_ECHO) {
4587		requote(tmplLine, config->cfi);
4588		static const char *prefix = "'Loading ";
4589		if (tmplLine->numElements > 1 &&
4590		strstr(tmplLine->elements[1].item, prefix)
4591		&& masterLine->next
4592		&& iskernel(masterLine->next->type)) {
4593		char *newTitle =
4594		malloc(strlen(prefix) +
4595		strlen(newKernelTitle) + 2);
4596
4597		strcpy(newTitle, prefix);
4598		strcat(newTitle, newKernelTitle);
4599		strcat(newTitle, "'");
4600		newLine =
4601		addLine(new, config->cfi, LT_ECHO,
4602		tmplLine->indent, newTitle);
4603		free(newTitle);
4604		} else {
4605		/* pass through other lines from the
4606		* template */
4607		newLine =
4608		addLineTmpl(new, tmplLine, newLine,
4609		NULL, config->cfi);
4610		}
4611		} else if (tmplLine->type == LT_DEVTREE &&
4612		tmplLine->numElements == 2
4613		&& newDevTreePath) {
4614		newLine =
4615		addLineTmpl(new, tmplLine, newLine,
4616		newDevTreePath + strlen(prefix),
4617		config->cfi);
4618		needs &= ~NEED_DEVTREE;
4619		} else if (tmplLine->type == LT_ENTRY_END
4620		&& needs & NEED_DEVTREE) {
4621		const char *ndtp = newDevTreePath;
4622		if (!strncmp
4623		(newDevTreePath, prefix, strlen(prefix)))
4624		ndtp += strlen(prefix);
4625		newLine = addLine(new, config->cfi, LT_DEVTREE,
4626		config->secondaryIndent,
4627		ndtp);
4628		needs &= ~NEED_DEVTREE;
4629		newLine =
4630		addLineTmpl(new, tmplLine, newLine, NULL,
4631		config->cfi);
4632		} else {
4633		/* pass through other lines from the template */
4634		newLine =
4635		addLineTmpl(new, tmplLine, newLine, NULL,
4636		config->cfi);
4637		}
4638		}
4639
4640		} else {
4641		/* don't have a template, so start the entry with the
4642		* appropriate starting line
4643		*/
4644		switch (config->cfi->entryStart) {
4645		case LT_KERNEL:
4646		case LT_KERNEL_EFI:
4647		case LT_KERNEL_16:
4648		if (new->multiboot && config->cfi->mbHyperFirst) {
4649		/* fall through to LT_HYPER */
4650		} else {
4651		newLine = addLine(new, config->cfi,
4652		preferredLineType(LT_KERNEL,
4653		config->
4654		cfi),
4655		config->primaryIndent,
4656		newKernelPath +
4657		strlen(prefix));
4658		needs &= ~NEED_KERNEL;
4659		break;
4660		}
4661
4662		case LT_HYPER:
4663		newLine = addLine(new, config->cfi, LT_HYPER,
4664		config->primaryIndent,
4665		newMBKernel + strlen(prefix));
4666		needs &= ~NEED_MB;
4667		break;
4668
4669		case LT_MENUENTRY:{
4670		char *nkt = malloc(strlen(newKernelTitle) + 3);
4671		strcpy(nkt, "'");
4672		strcat(nkt, newKernelTitle);
4673		strcat(nkt, "'");
4674		newLine =
4675		addLine(new, config->cfi, LT_MENUENTRY,
4676		config->primaryIndent, nkt);
4677		free(nkt);
4678		needs &= ~NEED_TITLE;
4679		needs |= NEED_END;
4680		break;
4681		}
4682		case LT_TITLE:
4683		if (useextlinuxmenu != 0) { // We just need useextlinuxmenu to not be zero (set above)
4684		char *templabel;
4685		int x = 0, y = 0;
4686
4687		templabel = strdup(newKernelTitle);
4688		while (templabel[x]) {
4689		if (templabel[x] == ' ') {
4690		y = x;
4691		while (templabel[y]) {
4692		templabel[y] =
4693		templabel[y + 1];
4694		y++;
4695		}
4696		}
4697		x++;
4698		}
4699		newLine = addLine(new, config->cfi, LT_TITLE,
4700		config->primaryIndent,
4701		templabel);
4702		free(templabel);
4703		} else {
4704		newLine = addLine(new, config->cfi, LT_TITLE,
4705		config->primaryIndent,
4706		newKernelTitle);
4707		}
4708		needs &= ~NEED_TITLE;
4709		break;
4710
4711		default:
4712		abort();
4713		}
4714		}
4715
4716		struct singleLine *endLine = NULL;
4717		endLine = getLineByType(LT_ENTRY_END, new->lines);
4718		if (endLine) {
4719		removeLine(new, endLine);
4720		needs |= NEED_END;
4721		}
4722
4723		/* add the remainder of the lines, i.e. those that either
4724		* weren't present in the template, or in the case of no template,
4725		* all the lines following the entryStart.
4726		*/
4727		if (needs & NEED_TITLE) {
4728		newLine = addLine(new, config->cfi, LT_TITLE,
4729		config->secondaryIndent, newKernelTitle);
4730		needs &= ~NEED_TITLE;
4731		}
4732		if ((needs & NEED_MB) && config->cfi->mbHyperFirst) {
4733		newLine = addLine(new, config->cfi, LT_HYPER,
4734		config->secondaryIndent,
4735		newMBKernel + strlen(prefix));
4736		needs &= ~NEED_MB;
4737		}
4738		if (needs & NEED_KERNEL) {
4739		newLine = addLine(new, config->cfi,
4740		(new->multiboot
4741		&& getKeywordByType(LT_MBMODULE,
4742		config->cfi))
4743		? LT_MBMODULE : preferredLineType(LT_KERNEL,
4744		config->
4745		cfi),
4746		config->secondaryIndent,
4747		newKernelPath + strlen(prefix));
4748		needs &= ~NEED_KERNEL;
4749		}
4750		if (needs & NEED_MB) {
4751		newLine = addLine(new, config->cfi, LT_HYPER,
4752		config->secondaryIndent,
4753		newMBKernel + strlen(prefix));
4754		needs &= ~NEED_MB;
4755		}
4756		if (needs & NEED_INITRD) {
4757		char *initrdVal;
4758		initrdVal =
4759		getInitrdVal(config, prefix, NULL, newKernelInitrd,
4760		extraInitrds, extraInitrdCount);
4761		newLine =
4762		addLine(new, config->cfi,
4763		(new->multiboot
4764		&& getKeywordByType(LT_MBMODULE, config->cfi))
4765		? LT_MBMODULE : preferredLineType(LT_INITRD,
4766		config->cfi),
4767		config->secondaryIndent, initrdVal);
4768		free(initrdVal);
4769		needs &= ~NEED_INITRD;
4770		}
4771		if (needs & NEED_DEVTREE) {
4772		newLine = addLine(new, config->cfi, LT_DEVTREE,
4773		config->secondaryIndent, newDevTreePath);
4774		needs &= ~NEED_DEVTREE;
4775		}
4776
4777		/* NEEDS_END must be last on bootloaders that need it... */
4778		if (needs & NEED_END) {
4779		newLine = addLine(new, config->cfi, LT_ENTRY_END,
4780		config->secondaryIndent, NULL);
4781		needs &= ~NEED_END;
4782		}
4783
4784		if (needs) {
4785		printf(_("grubby: needs=%d, aborting\n"), needs);
4786		abort();
4787		}
4788
4789		if (updateImage(config, indexs, prefix, newKernelArgs, NULL,
4790		newMBKernelArgs, NULL)) {
4791		config->isModified = 1;
4792		return 1;
4793		}
4794
4795		return 0;
4796		}
4797
4798		int main(int argc, const char **argv)
4799		{
4800		poptContext optCon;
4801		const char *grubConfig = NULL;
4802		char *outputFile = NULL;
4803		int arg = 0;
4804		int flags = 0;
4805		int badImageOkay = 0;
4806		int configureGrub2 = 0;
4807		int configureLilo = 0, configureELilo = 0, configureGrub = 0;
4808		int configureYaboot = 0, configureSilo = 0, configureZipl = 0;
4809		int configureExtLinux = 0;
4810		int bootloaderProbe = 0;
4811		int extraInitrdCount = 0;
4812		char *updateKernelPath = NULL;
4813		char *newKernelPath = NULL;
4814		char *removeKernelPath = NULL;
4815		char *newKernelArgs = NULL;
4816		char *newKernelInitrd = NULL;
4817		char *newKernelTitle = NULL;
4818		char *newDevTreePath = NULL;
4819		char *newMBKernel = NULL;
4820		char *newMBKernelArgs = NULL;
4821		int newIndex = 0;
4822		char *removeMBKernelArgs = NULL;
4823		char *removeMBKernel = NULL;
4824		char *bootPrefix = NULL;
4825		char *defaultKernel = NULL;
4826		char *removeArgs = NULL;
4827		char *kernelInfo = NULL;
4828		char *extraInitrds[MAX_EXTRA_INITRDS] = { NULL };
4829		char *envPath = NULL;
4830		const char *chptr = NULL;
4831		struct configFileInfo *cfi = NULL;
4832		struct grubConfig *config;
4833		struct singleEntry *template = NULL;
4834		int copyDefault = 0, makeDefault = 0;
4835		int displayDefault = 0;
4836		int displayDefaultIndex = 0;
4837		int displayDefaultTitle = 0;
4838		int defaultIndex = -1;
4839		struct poptOption options[] = {
4840		{"add-kernel", 0, POPT_ARG_STRING, &newKernelPath, 0,
4841		_("add an entry for the specified kernel"), _("kernel-path")},
4842		{"add-multiboot", 0, POPT_ARG_STRING, &newMBKernel, 0,
4843		_("add an entry for the specified multiboot kernel"), NULL},
4844		{"args", 0, POPT_ARG_STRING, &newKernelArgs, 0,
4845		_("default arguments for the new kernel or new arguments for "
4846		"kernel being updated"), _("args")},
4847		{"mbargs", 0, POPT_ARG_STRING, &newMBKernelArgs, 0,
4848		_("default arguments for the new multiboot kernel or "
4849		"new arguments for multiboot kernel being updated"), NULL},
4850		{"bad-image-okay", 0, 0, &badImageOkay, 0,
4851		_
4852		("don't sanity check images in boot entries (for testing only)"),
4853		NULL},
4854		{"boot-filesystem", 0, POPT_ARG_STRING, &bootPrefix, 0,
4855		_
4856		("filesystem which contains /boot directory (for testing only)"),
4857		_("bootfs")},
4858		#if defined(__i386__) || defined(__x86_64__) || defined (__powerpc64__) || defined (__ia64__)
4859		{"bootloader-probe", 0, POPT_ARG_NONE, &bootloaderProbe, 0,
4860		_("check which bootloader is installed on boot sector")},
4861		#endif
4862		{"config-file", 'c', POPT_ARG_STRING, &grubConfig, 0,
4863		_("path to grub config file to update (\"-\" for stdin)"),
4864		_("path")},
4865		{"copy-default", 0, 0, &copyDefault, 0,
4866		_("use the default boot entry as a template for the new entry "
4867		"being added; if the default is not a linux image, or if "
4868		"the kernel referenced by the default image does not exist, "
4869		"the first linux entry whose kernel does exist is used as the "
4870		"template"), NULL},
4871		{"debug", 0, 0, &debug, 0,
4872		_("print debugging information for failures")},
4873		{"default-kernel", 0, 0, &displayDefault, 0,
4874		_("display the path of the default kernel")},
4875		{"default-index", 0, 0, &displayDefaultIndex, 0,
4876		_("display the index of the default kernel")},
4877		{"default-title", 0, 0, &displayDefaultTitle, 0,
4878		_("display the title of the default kernel")},
4879		{"devtree", 0, POPT_ARG_STRING, &newDevTreePath, 0,
4880		_("device tree file for new stanza"), _("dtb-path")},
4881		{"devtreedir", 0, POPT_ARG_STRING, &newDevTreePath, 0,
4882		_("device tree directory for new stanza"), _("dtb-path")},
4883		{"elilo", 0, POPT_ARG_NONE, &configureELilo, 0,
4884		_("configure elilo bootloader")},
4885		{"efi", 0, POPT_ARG_NONE, &isEfi, 0,
4886		_("force grub2 stanzas to use efi")},
4887		{"env", 0, POPT_ARG_STRING, &envPath, 0,
4888		_("path for environment data"),
4889		_("path")},
4890		{"extlinux", 0, POPT_ARG_NONE, &configureExtLinux, 0,
4891		_("configure extlinux bootloader (from syslinux)")},
4892		{"grub", 0, POPT_ARG_NONE, &configureGrub, 0,
4893		_("configure grub bootloader")},
4894		{"grub2", 0, POPT_ARG_NONE, &configureGrub2, 0,
4895		_("configure grub2 bootloader")},
4896		{"info", 0, POPT_ARG_STRING, &kernelInfo, 0,
4897		_("display boot information for specified kernel"),
4898		_("kernel-path")},
4899		{"initrd", 0, POPT_ARG_STRING, &newKernelInitrd, 0,
4900		_("initrd image for the new kernel"), _("initrd-path")},
4901		{"extra-initrd", 'i', POPT_ARG_STRING, NULL, 'i',
4902		_
4903		("auxiliary initrd image for things other than the new kernel"),
4904		_("initrd-path")},
4905		{"lilo", 0, POPT_ARG_NONE, &configureLilo, 0,
4906		_("configure lilo bootloader")},
4907		{"make-default", 0, 0, &makeDefault, 0,
4908		_("make the newly added entry the default boot entry"), NULL},
4909		{"output-file", 'o', POPT_ARG_STRING, &outputFile, 0,
4910		_("path to output updated config file (\"-\" for stdout)"),
4911		_("path")},
4912		{"remove-args", 0, POPT_ARG_STRING, &removeArgs, 0,
4913		_("remove kernel arguments"), NULL},
4914		{"remove-mbargs", 0, POPT_ARG_STRING, &removeMBKernelArgs, 0,
4915		_("remove multiboot kernel arguments"), NULL},
4916		{"remove-kernel", 0, POPT_ARG_STRING, &removeKernelPath, 0,
4917		_("remove all entries for the specified kernel"),
4918		_("kernel-path")},
4919		{"remove-multiboot", 0, POPT_ARG_STRING, &removeMBKernel, 0,
4920		_("remove all entries for the specified multiboot kernel"),
4921		NULL},
4922		{"set-default", 0, POPT_ARG_STRING, &defaultKernel, 0,
4923		_("make the first entry referencing the specified kernel "
4924		"the default"), _("kernel-path")},
4925		{"set-default-index", 0, POPT_ARG_INT, &defaultIndex, 0,
4926		_("make the given entry index the default entry"),
4927		_("entry-index")},
4928		{"set-index", 0, POPT_ARG_INT, &newIndex, 0,
4929		_("use the given index when creating a new entry"),
4930		_("entry-index")},
4931		{"silo", 0, POPT_ARG_NONE, &configureSilo, 0,
4932		_("configure silo bootloader")},
4933		{"title", 0, POPT_ARG_STRING, &newKernelTitle, 0,
4934		_("title to use for the new kernel entry"), _("entry-title")},
4935		{"update-kernel", 0, POPT_ARG_STRING, &updateKernelPath, 0,
4936		_("updated information for the specified kernel"),
4937		_("kernel-path")},
4938		{"version", 'v', 0, NULL, 'v',
4939		_("print the version of this program and exit"), NULL},
4940		{"yaboot", 0, POPT_ARG_NONE, &configureYaboot, 0,
4941		_("configure yaboot bootloader")},
4942		{"zipl", 0, POPT_ARG_NONE, &configureZipl, 0,
4943		_("configure zipl bootloader")},
4944		POPT_AUTOHELP {0, 0, 0, 0, 0}
4945		};
4946
4947		useextlinuxmenu = 0;
4948
4949		int i = 0;
4950		for (int j = 1; j < argc; j++)
4951		i += strlen(argv[j]) + 1;
4952		saved_command_line = malloc(i);
4953		if (!saved_command_line) {
4954		fprintf(stderr, "grubby: %m\n");
4955		exit(1);
4956		}
4957		saved_command_line[0] = '\0';
4958		for (int j = 1; j < argc; j++) {
4959		strcat(saved_command_line, argv[j]);
4960		strncat(saved_command_line, j == argc - 1 ? "" : " ", 1);
4961		}
4962
4963		optCon = poptGetContext("grubby", argc, argv, options, 0);
4964		poptReadDefaultConfig(optCon, 1);
4965
4966		while ((arg = poptGetNextOpt(optCon)) >= 0) {
4967		switch (arg) {
4968		case 'v':
4969		printf("grubby version %s\n", VERSION);
4970		exit(0);
4971		break;
4972		case 'i':
4973		if (extraInitrdCount < MAX_EXTRA_INITRDS) {
4974		extraInitrds[extraInitrdCount++] =
4975		strdup(poptGetOptArg(optCon));
4976		} else {
4977		fprintf(stderr,
4978		_
4979		("grubby: extra initrd maximum is %d\n"),
4980		extraInitrdCount);
4981		return 1;
4982		}
4983		break;
4984		}
4985		}
4986
4987		if (arg < -1) {
4988		fprintf(stderr, _("grubby: bad argument %s: %s\n"),
4989		poptBadOption(optCon, POPT_BADOPTION_NOALIAS),
4990		poptStrerror(arg));
4991		return 1;
4992		}
4993
4994		if ((chptr = poptGetArg(optCon))) {
4995		fprintf(stderr, _("grubby: unexpected argument %s\n"), chptr);
4996		return 1;
4997		}
4998
4999		if ((configureLilo + configureGrub2 + configureGrub + configureELilo +
5000		configureYaboot + configureSilo + configureZipl +
5001		configureExtLinux) > 1) {
5002		fprintf(stderr,
5003		_("grubby: cannot specify multiple bootloaders\n"));
5004		return 1;
5005		} else if (bootloaderProbe && grubConfig) {
5006		fprintf(stderr,
5007		_
5008		("grubby: cannot specify config file with --bootloader-probe\n"));
5009		return 1;
5010		} else if (configureGrub2) {
5011		cfi = &grub2ConfigType;
5012		if (envPath)
5013		cfi->envFile = envPath;
5014		} else if (configureLilo) {
5015		cfi = &liloConfigType;
5016		} else if (configureGrub) {
5017		cfi = &grubConfigType;
5018		} else if (configureELilo) {
5019		cfi = &eliloConfigType;
5020		} else if (configureYaboot) {
5021		cfi = &yabootConfigType;
5022		} else if (configureSilo) {
5023		cfi = &siloConfigType;
5024		} else if (configureZipl) {
5025		cfi = &ziplConfigType;
5026		} else if (configureExtLinux) {
5027		cfi = &extlinuxConfigType;
5028		useextlinuxmenu = 1;
5029		}
5030
5031		if (!cfi) {
5032		if (grub2FindConfig(&grub2ConfigType)) {
5033		cfi = &grub2ConfigType;
5034		if (envPath)
5035		cfi->envFile = envPath;
5036		} else
5037		#ifdef __ia64__
5038		cfi = &eliloConfigType;
5039		#elif __powerpc__
5040		cfi = &yabootConfigType;
5041		#elif __sparc__
5042		cfi = &siloConfigType;
5043		#elif __s390__
5044		cfi = &ziplConfigType;
5045		#elif __s390x__
5046		cfi = &ziplConfigtype;
5047		#else
5048		cfi = &grubConfigType;
5049		#endif
5050		}
5051
5052		if (!grubConfig) {
5053		if (cfi->findConfig)
5054		grubConfig = cfi->findConfig(cfi);
5055		if (!grubConfig)
5056		grubConfig = cfi->defaultConfig;
5057		}
5058
5059		if (bootloaderProbe && (displayDefault || kernelInfo ||
5060		newKernelPath || removeKernelPath || makeDefault
5061		|| defaultKernel || displayDefaultIndex
5062		|| displayDefaultTitle
5063		|| (defaultIndex >= 0))) {
5064		fprintf(stderr,
5065		_("grubby: --bootloader-probe may not be used with "
5066		"specified option"));
5067		return 1;
5068		}
5069
5070		if ((displayDefault || kernelInfo) && (newKernelPath ||
5071		removeKernelPath)) {
5072		fprintf(stderr, _("grubby: --default-kernel and --info may not "
5073		"be used when adding or removing kernels\n"));
5074		return 1;
5075		}
5076
5077		if (newKernelPath && !newKernelTitle) {
5078		fprintf(stderr, _("grubby: kernel title must be specified\n"));
5079		return 1;
5080		} else if (!newKernelPath && (copyDefault ||
5081		(newKernelInitrd && !updateKernelPath) ||
5082		makeDefault || extraInitrdCount > 0)) {
5083		fprintf(stderr, _("grubby: kernel path expected\n"));
5084		return 1;
5085		}
5086
5087		if (newKernelPath && updateKernelPath) {
5088		fprintf(stderr, _("grubby: --add-kernel and --update-kernel may"
5089		"not be used together"));
5090		return 1;
5091		}
5092
5093		if (makeDefault && defaultKernel) {
5094		fprintf(stderr, _("grubby: --make-default and --default-kernel "
5095		"may not be used together\n"));
5096		return 1;
5097		} else if (defaultKernel && removeKernelPath &&
5098		!strcmp(defaultKernel, removeKernelPath)) {
5099		fprintf(stderr,
5100		_("grubby: cannot make removed kernel the default\n"));
5101		return 1;
5102		} else if (defaultKernel && newKernelPath &&
5103		!strcmp(defaultKernel, newKernelPath)) {
5104		makeDefault = 1;
5105		defaultKernel = NULL;
5106		} else if (defaultKernel && (defaultIndex >= 0)) {
5107		fprintf(stderr,
5108		_("grubby: --set-default and --set-default-index "
5109		"may not be used together\n"));
5110		return 1;
5111		}
5112
5113		if (grubConfig && !strcmp(grubConfig, "-") && !outputFile) {
5114		fprintf(stderr,
5115		_("grubby: output file must be specified if stdin "
5116		"is used\n"));
5117		return 1;
5118		}
5119
5120		if (!removeKernelPath && !newKernelPath && !displayDefault
5121		&& !defaultKernel && !kernelInfo && !bootloaderProbe
5122		&& !updateKernelPath && !removeMBKernel && !displayDefaultIndex
5123		&& !displayDefaultTitle && (defaultIndex == -1)) {
5124		fprintf(stderr, _("grubby: no action specified\n"));
5125		return 1;
5126		}
5127
5128		flags |= badImageOkay ? GRUBBY_BADIMAGE_OKAY : 0;
5129
5130		if (cfi->needsBootPrefix) {
5131		if (!bootPrefix) {
5132		bootPrefix = findBootPrefix();
5133		if (!bootPrefix)
5134		return 1;
5135		} else {
5136		/* this shouldn't end with a / */
5137		if (bootPrefix[strlen(bootPrefix) - 1] == '/')
5138		bootPrefix[strlen(bootPrefix) - 1] = '\0';
5139		}
5140		} else {
5141		bootPrefix = "";
5142		}
5143
5144		if (!cfi->mbAllowExtraInitRds && extraInitrdCount > 0) {
5145		fprintf(stderr,
5146		_("grubby: %s doesn't allow multiple initrds\n"),
5147		cfi->defaultConfig);
5148		return 1;
5149		}
5150
5151		if (bootloaderProbe) {
5152		int lrc = 0, grc = 0, gr2c = 0, extrc = 0, yrc = 0, erc = 0;
5153		struct grubConfig *lconfig, *gconfig, *yconfig, *econfig;
5154
5155		const char *grub2config = grub2FindConfig(&grub2ConfigType);
5156		if (grub2config) {
5157		gconfig = readConfig(grub2config, &grub2ConfigType);
5158		if (!gconfig)
5159		gr2c = 1;
5160		else
5161		gr2c = checkForGrub2(gconfig);
5162		}
5163
5164		const char *grubconfig = grubFindConfig(&grubConfigType);
5165		if (!access(grubconfig, F_OK)) {
5166		gconfig = readConfig(grubconfig, &grubConfigType);
5167		if (!gconfig)
5168		grc = 1;
5169		else
5170		grc = checkForGrub(gconfig);
5171		}
5172
5173		if (!access(liloConfigType.defaultConfig, F_OK)) {
5174		lconfig =
5175		readConfig(liloConfigType.defaultConfig,
5176		&liloConfigType);
5177		if (!lconfig)
5178		lrc = 1;
5179		else
5180		lrc = checkForLilo(lconfig);
5181		}
5182
5183		if (!access(eliloConfigType.defaultConfig, F_OK)) {
5184		econfig = readConfig(eliloConfigType.defaultConfig,
5185		&eliloConfigType);
5186		if (!econfig)
5187		erc = 1;
5188		else
5189		erc = checkForElilo(econfig);
5190		}
5191
5192		if (!access(extlinuxConfigType.defaultConfig, F_OK)) {
5193		lconfig =
5194		readConfig(extlinuxConfigType.defaultConfig,
5195		&extlinuxConfigType);
5196		if (!lconfig)
5197		extrc = 1;
5198		else
5199		extrc = checkForExtLinux(lconfig);
5200		}
5201
5202		if (!access(yabootConfigType.defaultConfig, F_OK)) {
5203		yconfig = readConfig(yabootConfigType.defaultConfig,
5204		&yabootConfigType);
5205		if (!yconfig)
5206		yrc = 1;
5207		else
5208		yrc = checkForYaboot(yconfig);
5209		}
5210
5211		if (lrc == 1 || grc == 1 || gr2c == 1 || extrc == 1 || yrc == 1
5212		|| erc == 1)
5213		return 1;
5214
5215		if (lrc == 2)
5216		printf("lilo\n");
5217		if (gr2c == 2)
5218		printf("grub2\n");
5219		if (grc == 2)
5220		printf("grub\n");
5221		if (extrc == 2)
5222		printf("extlinux\n");
5223		if (yrc == 2)
5224		printf("yaboot\n");
5225		if (erc == 2)
5226		printf("elilo\n");
5227
5228		return 0;
5229		}
5230
5231		if (grubConfig == NULL) {
5232		printf("Could not find bootloader configuration file.\n");
5233		exit(1);
5234		}
5235
5236		config = readConfig(grubConfig, cfi);
5237		if (!config)
5238		return 1;
5239
5240		if (displayDefault) {
5241		struct singleLine *line;
5242		struct singleEntry *entry;
5243		char *rootspec;
5244
5245		if (config->defaultImage == NO_DEFAULT_ENTRY)
5246		return 0;
5247		if (config->defaultImage == DEFAULT_SAVED_GRUB2 &&
5248		cfi->defaultIsSaved)
5249		config->defaultImage = FIRST_ENTRY_INDEX;
5250		entry = findEntryByIndex(config, config->defaultImage);
5251		if (!entry)
5252		return 0;
5253		if (!suitableImage(entry, bootPrefix, 0, flags))
5254		return 0;
5255
5256		line =
5257		getLineByType(LT_KERNEL | LT_HYPER | LT_KERNEL_EFI |
5258		LT_KERNEL_16, entry->lines);
5259		if (!line)
5260		return 0;
5261
5262		rootspec = getRootSpecifier(line->elements[1].item);
5263		printf("%s%s\n", bootPrefix, line->elements[1].item +
5264		((rootspec != NULL) ? strlen(rootspec) : 0));
5265
5266		return 0;
5267
5268		} else if (displayDefaultTitle) {
5269		struct singleLine *line;
5270		struct singleEntry *entry;
5271
5272		if (config->defaultImage == NO_DEFAULT_ENTRY)
5273		return 0;
5274		if (config->defaultImage == DEFAULT_SAVED_GRUB2 &&
5275		cfi->defaultIsSaved)
5276		config->defaultImage = FIRST_ENTRY_INDEX;
5277		entry = findEntryByIndex(config, config->defaultImage);
5278		if (!entry)
5279		return 0;
5280
5281		if (!configureGrub2) {
5282		char *title;
5283		line = getLineByType(LT_TITLE, entry->lines);
5284		if (!line)
5285		return 0;
5286		title = extractTitle(config, line);
5287		if (!title)
5288		return 0;
5289		printf("%s\n", title);
5290		free(title);
5291		} else {
5292		char *title;
5293
5294		dbgPrintf
5295		("This is GRUB2, default title is embeded in menuentry\n");
5296		line = getLineByType(LT_MENUENTRY, entry->lines);
5297		if (!line)
5298		return 0;
5299		title = grub2ExtractTitle(line);
5300		if (title)
5301		printf("%s\n", title);
5302		}
5303		return 0;
5304
5305		} else if (displayDefaultIndex) {
5306		if (config->defaultImage == NO_DEFAULT_ENTRY)
5307		return 0;
5308		if (config->defaultImage == DEFAULT_SAVED_GRUB2 &&
5309		cfi->defaultIsSaved)
5310		config->defaultImage = FIRST_ENTRY_INDEX;
5311		printf("%i\n", config->defaultImage);
5312		return 0;
5313
5314		} else if (kernelInfo)
5315		return displayInfo(config, kernelInfo, bootPrefix);
5316
5317		if (copyDefault) {
5318		template = findTemplate(config, bootPrefix, NULL, 0, flags);
5319		if (!template)
5320		return 1;
5321		}
5322
5323		markRemovedImage(config, removeKernelPath, bootPrefix);
5324		markRemovedImage(config, removeMBKernel, bootPrefix);
5325		setDefaultImage(config, newKernelPath != NULL, defaultKernel,
5326		makeDefault, bootPrefix, flags, defaultIndex,
5327		newIndex);
5328		setFallbackImage(config, newKernelPath != NULL);
5329		if (updateImage(config, updateKernelPath, bootPrefix, newKernelArgs,
5330		removeArgs, newMBKernelArgs, removeMBKernelArgs))
5331		return 1;
5332		if (updateKernelPath && newKernelInitrd) {
5333		if (newMBKernel) {
5334		if (addMBInitrd(config, newMBKernel, updateKernelPath,
5335		bootPrefix, newKernelInitrd,
5336		newKernelTitle))
5337		return 1;
5338		} else {
5339		if (updateInitrd(config, updateKernelPath, bootPrefix,
5340		newKernelInitrd, newKernelTitle))
5341		return 1;
5342		}
5343		}
5344		if (addNewKernel(config, template, bootPrefix, newKernelPath,
5345		newKernelTitle, newKernelArgs, newKernelInitrd,
5346		(const char **)extraInitrds, extraInitrdCount,
5347		newMBKernel, newMBKernelArgs, newDevTreePath,
5348		newIndex))
5349		return 1;
5350
5351		if (numEntries(config) == 0) {
5352		fprintf(stderr,
5353		_("grubby: doing this would leave no kernel entries. "
5354		"Not writing out new config.\n"));
5355		return 1;
5356		}
5357
5358	if (!outputFile)	if (!outputFile)
5359	outputFile = grubConfig;	outputFile = (char *)grubConfig;
5360
5361	return writeConfig(config, outputFile, bootPrefix);	return writeConfig(config, outputFile, bootPrefix);
5362	}	}

---

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Legend: Removed from v.1332   changed lines   Added in v.3021