[thirdparty/git.git] / update-cache.c

/*
 * GIT - The information manager from hell
 *
 * Copyright (C) Linus Torvalds, 2005
 */
#include <signal.h>
#include "cache.h"

/*
 * Default to not allowing changes to the list of files. The
 * tool doesn't actually care, but this makes it harder to add
 * files to the revision control by mistake by doing something
 * like "update-cache *" and suddenly having all the object
 * files be revision controlled.
 */
static int allow_add = 0, allow_remove = 0, allow_replace = 0, not_new = 0;

/* Three functions to allow overloaded pointer return; see linux/err.h */
static inline void *ERR_PTR(long error)
{
	return (void *) error;
}

static inline long PTR_ERR(const void *ptr)
{
	return (long) ptr;
}

static inline long IS_ERR(const void *ptr)
{
	return (unsigned long)ptr > (unsigned long)-1000L;
}

/*
 * This only updates the "non-critical" parts of the directory
 * cache, ie the parts that aren't tracked by GIT, and only used
 * to validate the cache.
 */
static void fill_stat_cache_info(struct cache_entry *ce, struct stat *st)
{
	ce->ce_ctime.sec = htonl(st->st_ctime);
	ce->ce_mtime.sec = htonl(st->st_mtime);
#ifdef NSEC
	ce->ce_ctime.nsec = htonl(st->st_ctim.tv_nsec);
	ce->ce_mtime.nsec = htonl(st->st_mtim.tv_nsec);
#endif
	ce->ce_dev = htonl(st->st_dev);
	ce->ce_ino = htonl(st->st_ino);
	ce->ce_uid = htonl(st->st_uid);
	ce->ce_gid = htonl(st->st_gid);
	ce->ce_size = htonl(st->st_size);
}

static int add_file_to_cache(char *path)
{
	int size, namelen, option, status;
	struct cache_entry *ce;
	struct stat st;
	int fd;
	char *target;

	status = lstat(path, &st);
	if (status < 0 || S_ISDIR(st.st_mode)) {
		/* When we used to have "path" and now we want to add
		 * "path/file", we need a way to remove "path" before
		 * being able to add "path/file".  However,
		 * "git-update-cache --remove path" would not work.
		 * --force-remove can be used but this is more user
		 * friendly, especially since we can do the opposite
		 * case just fine without --force-remove.
		 */
		if (status == 0 || (errno == ENOENT || errno == ENOTDIR)) {
			if (allow_remove)
				return remove_file_from_cache(path);
		}
		return error("open(\"%s\"): %s", path, strerror(errno));
	}
	namelen = strlen(path);
	size = cache_entry_size(namelen);
	ce = xmalloc(size);
	memset(ce, 0, size);
	memcpy(ce->name, path, namelen);
	fill_stat_cache_info(ce, &st);
	ce->ce_mode = create_ce_mode(st.st_mode);
	ce->ce_flags = htons(namelen);
	switch (st.st_mode & S_IFMT) {
	case S_IFREG:
		fd = open(path, O_RDONLY);
		if (fd < 0)
			return -1;
		if (index_fd(ce->sha1, fd, &st) < 0)
			return -1;
		break;
	case S_IFLNK:
		target = xmalloc(st.st_size+1);
		if (readlink(path, target, st.st_size+1) != st.st_size) {
			free(target);
			return -1;
		}
		if (write_sha1_file(target, st.st_size, "blob", ce->sha1))
			return -1;
		free(target);
		break;
	default:
		return -1;
	}
	option = allow_add ? ADD_CACHE_OK_TO_ADD : 0;
	option |= allow_replace ? ADD_CACHE_OK_TO_REPLACE : 0;
	return add_cache_entry(ce, option);
}

static int match_data(int fd, void *buffer, unsigned long size)
{
	while (size) {
		char compare[1024];
		int ret = read(fd, compare, sizeof(compare));

		if (ret <= 0 || ret > size || memcmp(buffer, compare, ret))
			return -1;
		size -= ret;
		buffer += ret;
	}
	return 0;
}

static int compare_data(struct cache_entry *ce, unsigned long expected_size)
{
	int match = -1;
	int fd = open(ce->name, O_RDONLY);

	if (fd >= 0) {
		void *buffer;
		unsigned long size;
		char type[20];

		buffer = read_sha1_file(ce->sha1, type, &size);
		if (buffer) {
			if (size == expected_size && !strcmp(type, "blob"))
				match = match_data(fd, buffer, size);
			free(buffer);
		}
		close(fd);
	}
	return match;
}

static int compare_link(struct cache_entry *ce, unsigned long expected_size)
{
	int match = -1;
	char *target;
	void *buffer;
	unsigned long size;
	char type[10];
	int len;

	target = xmalloc(expected_size);
	len = readlink(ce->name, target, expected_size);
	if (len != expected_size) {
		free(target);
		return -1;
	}
	buffer = read_sha1_file(ce->sha1, type, &size);
	if (!buffer) {
		free(target);
		return -1;
	}
	if (size == expected_size)
		match = memcmp(buffer, target, size);
	free(buffer);
	free(target);
	return match;
}

/*
 * "refresh" does not calculate a new sha1 file or bring the
 * cache up-to-date for mode/content changes. But what it
 * _does_ do is to "re-match" the stat information of a file
 * with the cache, so that you can refresh the cache for a
 * file that hasn't been changed but where the stat entry is
 * out of date.
 *
 * For example, you'd want to do this after doing a "read-tree",
 * to link up the stat cache details with the proper files.
 */
static struct cache_entry *refresh_entry(struct cache_entry *ce)
{
	struct stat st;
	struct cache_entry *updated;
	int changed, size;

	if (lstat(ce->name, &st) < 0)
		return ERR_PTR(-errno);

	changed = ce_match_stat(ce, &st);
	if (!changed)
		return ce;

	/*
	 * If the mode or type has changed, there's no point in trying
	 * to refresh the entry - it's not going to match
	 */
	if (changed & (MODE_CHANGED | TYPE_CHANGED))
		return ERR_PTR(-EINVAL);

	switch (st.st_mode & S_IFMT) {
	case S_IFREG:
		if (compare_data(ce, st.st_size))
			return ERR_PTR(-EINVAL);
		break;
	case S_IFLNK:
		if (compare_link(ce, st.st_size))
			return ERR_PTR(-EINVAL);
		break;
	default:
		return ERR_PTR(-EINVAL);
	}

	size = ce_size(ce);
	updated = xmalloc(size);
	memcpy(updated, ce, size);
	fill_stat_cache_info(updated, &st);
	return updated;
}

static int refresh_cache(void)
{
	int i;
	int has_errors = 0;

	for (i = 0; i < active_nr; i++) {
		struct cache_entry *ce, *new;
		ce = active_cache[i];
		if (ce_stage(ce)) {
			printf("%s: needs merge\n", ce->name);
			has_errors = 1;
			while ((i < active_nr) &&
			       ! strcmp(active_cache[i]->name, ce->name))
				i++;
			i--;
			continue;
		}

		new = refresh_entry(ce);
		if (IS_ERR(new)) {
			if (!(not_new && PTR_ERR(new) == -ENOENT)) {
				printf("%s: needs update\n", ce->name);
				has_errors = 1;
			}
			continue;
		}
		active_cache_changed = 1;
		/* You can NOT just free active_cache[i] here, since it
		 * might not be necessarily malloc()ed but can also come
		 * from mmap(). */
		active_cache[i] = new;
	}
	return has_errors;
}

/*
 * We fundamentally don't like some paths: we don't want
 * dot or dot-dot anywhere, and in fact, we don't even want
 * any other dot-files (.git or anything else). They
 * are hidden, for chist sake.
 *
 * Also, we don't want double slashes or slashes at the
 * end that can make pathnames ambiguous.
 */
static int verify_path(char *path)
{
	char c;

	goto inside;
	for (;;) {
		if (!c)
			return 1;
		if (c == '/') {
inside:
			c = *path++;
			if (c != '/' && c != '.' && c != '\0')
				continue;
			return 0;
		}
		c = *path++;
	}
}

static int add_cacheinfo(char *arg1, char *arg2, char *arg3)
{
	int size, len, option;
	unsigned int mode;
	unsigned char sha1[20];
	struct cache_entry *ce;

	if (sscanf(arg1, "%o", &mode) != 1)
		return -1;
	if (get_sha1_hex(arg2, sha1))
		return -1;
	if (!verify_path(arg3))
		return -1;

	len = strlen(arg3);
	size = cache_entry_size(len);
	ce = xmalloc(size);
	memset(ce, 0, size);

	memcpy(ce->sha1, sha1, 20);
	memcpy(ce->name, arg3, len);
	ce->ce_flags = htons(len);
	ce->ce_mode = create_ce_mode(mode);
	option = allow_add ? ADD_CACHE_OK_TO_ADD : 0;
	option |= allow_replace ? ADD_CACHE_OK_TO_REPLACE : 0;
	return add_cache_entry(ce, option);
}

static const char *lockfile_name = NULL;

static void remove_lock_file(void)
{
	if (lockfile_name)
		unlink(lockfile_name);
}

static void remove_lock_file_on_signal(int signo)
{
	remove_lock_file();
}

int main(int argc, char **argv)
{
	int i, newfd, entries, has_errors = 0;
	int allow_options = 1;
	static char lockfile[MAXPATHLEN+1];
	const char *indexfile = get_index_file();

	snprintf(lockfile, sizeof(lockfile), "%s.lock", indexfile);

	newfd = open(lockfile, O_RDWR | O_CREAT | O_EXCL, 0600);
	if (newfd < 0)
		die("unable to create new cachefile");

	signal(SIGINT, remove_lock_file_on_signal);
	atexit(remove_lock_file);
	lockfile_name = lockfile;

	entries = read_cache();
	if (entries < 0)
		die("cache corrupted");

	for (i = 1 ; i < argc; i++) {
		char *path = argv[i];

		if (allow_options && *path == '-') {
			if (!strcmp(path, "--")) {
				allow_options = 0;
				continue;
			}
			if (!strcmp(path, "--add")) {
				allow_add = 1;
				continue;
			}
			if (!strcmp(path, "--replace")) {
				allow_replace = 1;
				continue;
			}
			if (!strcmp(path, "--remove")) {
				allow_remove = 1;
				continue;
			}
			if (!strcmp(path, "--refresh")) {
				has_errors |= refresh_cache();
				continue;
			}
			if (!strcmp(path, "--cacheinfo")) {
				if (i+3 >= argc)
					die("update-cache: --cacheinfo <mode> <sha1> <path>");
				if (add_cacheinfo(argv[i+1], argv[i+2], argv[i+3]))
					die("update-cache: --cacheinfo cannot add %s", argv[i+3]);
				i += 3;
				continue;
			}
			if (!strcmp(path, "--force-remove")) {
				if (argc <= i + 1)
					die("update-cache: --force-remove <path>");
				if (remove_file_from_cache(argv[i+1]))
					die("update-cache: --force-remove cannot remove %s", argv[i+1]);
				i++;
				continue;
			}

			if (!strcmp(path, "--ignore-missing")) {
				not_new = 1;
				continue;
			}
			die("unknown option %s", path);
		}
		if (!verify_path(path)) {
			fprintf(stderr, "Ignoring path %s\n", argv[i]);
			continue;
		}
		if (add_file_to_cache(path))
			die("Unable to add %s to database", path);
	}
	if (write_cache(newfd, active_cache, active_nr) || rename(lockfile, indexfile))
		die("Unable to write new cachefile");

	lockfile_name = NULL;
	return has_errors ? 1 : 0;
}
Commit	Line	Data
8bc9a0c7 LT	1	/*
	2	* GIT - The information manager from hell
	3	*
	4	* Copyright (C) Linus Torvalds, 2005
	5	*/
f2a19340	6	#include <signal.h>
e83c5163 LT	7	#include "cache.h"
e83c5163 LT	8
121481ab LT	9	/*
	10	* Default to not allowing changes to the list of files. The
	11	* tool doesn't actually care, but this makes it harder to add
	12	* files to the revision control by mistake by doing something
	13	* like "update-cache *" and suddenly having all the object
	14	* files be revision controlled.
	15	*/
192268c1	16	static int allow_add = 0, allow_remove = 0, allow_replace = 0, not_new = 0;
c6e007b0 JB	17
	18	/* Three functions to allow overloaded pointer return; see linux/err.h */
	19	static inline void *ERR_PTR(long error)
	20	{
	21	return (void *) error;
	22	}
	23
	24	static inline long PTR_ERR(const void *ptr)
	25	{
	26	return (long) ptr;
	27	}
	28
	29	static inline long IS_ERR(const void *ptr)
	30	{
	31	return (unsigned long)ptr > (unsigned long)-1000L;
	32	}
121481ab	33
711cf3a0 LT	34	/*
	35	* This only updates the "non-critical" parts of the directory
	36	* cache, ie the parts that aren't tracked by GIT, and only used
	37	* to validate the cache.
	38	*/
	39	static void fill_stat_cache_info(struct cache_entry ce, struct stat st)
	40	{
ccc4feb5 LT	41	ce->ce_ctime.sec = htonl(st->st_ctime);
ccc4feb5 LT	42	ce->ce_mtime.sec = htonl(st->st_mtime);
5ade8628	43	#ifdef NSEC
ccc4feb5 LT	44	ce->ce_ctime.nsec = htonl(st->st_ctim.tv_nsec);
ccc4feb5 LT	45	ce->ce_mtime.nsec = htonl(st->st_mtim.tv_nsec);
5ade8628	46	#endif
ccc4feb5 LT	47	ce->ce_dev = htonl(st->st_dev);
	48	ce->ce_ino = htonl(st->st_ino);
	49	ce->ce_uid = htonl(st->st_uid);
	50	ce->ce_gid = htonl(st->st_gid);
	51	ce->ce_size = htonl(st->st_size);
711cf3a0 LT	52	}
711cf3a0 LT	53
ee267527	54	static int add_file_to_cache(char *path)
e83c5163	55	{
4c5abf42	56	int size, namelen, option, status;
e83c5163 LT	57	struct cache_entry *ce;
	58	struct stat st;
	59	int fd;
ffbe1add	60	char *target;
e83c5163	61
4c5abf42 JH	62	status = lstat(path, &st);
	63	if (status < 0 \|\| S_ISDIR(st.st_mode)) {
	64	/* When we used to have "path" and now we want to add
	65	* "path/file", we need a way to remove "path" before
	66	* being able to add "path/file". However,
	67	* "git-update-cache --remove path" would not work.
	68	* --force-remove can be used but this is more user
	69	* friendly, especially since we can do the opposite
	70	* case just fine without --force-remove.
	71	*/
	72	if (status == 0 \|\| (errno == ENOENT \|\| errno == ENOTDIR)) {
121481ab LT	73	if (allow_remove)
	74	return remove_file_from_cache(path);
	75	}
071c41a0	76	return error("open(\"%s\"): %s", path, strerror(errno));
e83c5163	77	}
e83c5163 LT	78	namelen = strlen(path);
e83c5163 LT	79	size = cache_entry_size(namelen);
812666c8	80	ce = xmalloc(size);
e83c5163 LT	81	memset(ce, 0, size);
e83c5163 LT	82	memcpy(ce->name, path, namelen);
711cf3a0	83	fill_stat_cache_info(ce, &st);
e4479470	84	ce->ce_mode = create_ce_mode(st.st_mode);
f5cabd13	85	ce->ce_flags = htons(namelen);
8ae0a8c5 KS	86	switch (st.st_mode & S_IFMT) {
	87	case S_IFREG:
	88	fd = open(path, O_RDONLY);
	89	if (fd < 0)
	90	return -1;
	91	if (index_fd(ce->sha1, fd, &st) < 0)
	92	return -1;
	93	break;
	94	case S_IFLNK:
ffbe1add KS	95	target = xmalloc(st.st_size+1);
	96	if (readlink(path, target, st.st_size+1) != st.st_size) {
	97	free(target);
8ae0a8c5	98	return -1;
ffbe1add KS	99	}
ffbe1add KS	100	if (write_sha1_file(target, st.st_size, "blob", ce->sha1))
8ae0a8c5	101	return -1;
ffbe1add	102	free(target);
8ae0a8c5 KS	103	break;
8ae0a8c5 KS	104	default:
e83c5163	105	return -1;
8ae0a8c5	106	}
192268c1 JH	107	option = allow_add ? ADD_CACHE_OK_TO_ADD : 0;
	108	option \|= allow_replace ? ADD_CACHE_OK_TO_REPLACE : 0;
	109	return add_cache_entry(ce, option);
121481ab LT	110	}
121481ab LT	111
711cf3a0 LT	112	static int match_data(int fd, void *buffer, unsigned long size)
	113	{
	114	while (size) {
	115	char compare[1024];
	116	int ret = read(fd, compare, sizeof(compare));
	117
	118	if (ret <= 0 \|\| ret > size \|\| memcmp(buffer, compare, ret))
	119	return -1;
	120	size -= ret;
	121	buffer += ret;
	122	}
	123	return 0;
	124	}
	125
32d197f1	126	static int compare_data(struct cache_entry *ce, unsigned long expected_size)
121481ab	127	{
711cf3a0 LT	128	int match = -1;
	129	int fd = open(ce->name, O_RDONLY);
	130
	131	if (fd >= 0) {
	132	void *buffer;
	133	unsigned long size;
cb1da3a7	134	char type[20];
711cf3a0 LT	135
	136	buffer = read_sha1_file(ce->sha1, type, &size);
	137	if (buffer) {
32d197f1	138	if (size == expected_size && !strcmp(type, "blob"))
711cf3a0 LT	139	match = match_data(fd, buffer, size);
	140	free(buffer);
	141	}
	142	close(fd);
	143	}
	144	return match;
	145	}
	146
ffbe1add KS	147	static int compare_link(struct cache_entry *ce, unsigned long expected_size)
	148	{
	149	int match = -1;
	150	char *target;
	151	void *buffer;
	152	unsigned long size;
	153	char type[10];
	154	int len;
	155
	156	target = xmalloc(expected_size);
	157	len = readlink(ce->name, target, expected_size);
	158	if (len != expected_size) {
	159	free(target);
	160	return -1;
	161	}
	162	buffer = read_sha1_file(ce->sha1, type, &size);
	163	if (!buffer) {
	164	free(target);
	165	return -1;
	166	}
	167	if (size == expected_size)
	168	match = memcmp(buffer, target, size);
	169	free(buffer);
	170	free(target);
	171	return match;
	172	}
	173
711cf3a0 LT	174	/*
	175	* "refresh" does not calculate a new sha1 file or bring the
	176	* cache up-to-date for mode/content changes. But what it
	177	* _does_ do is to "re-match" the stat information of a file
	178	* with the cache, so that you can refresh the cache for a
	179	* file that hasn't been changed but where the stat entry is
	180	* out of date.
	181	*
	182	* For example, you'd want to do this after doing a "read-tree",
	183	* to link up the stat cache details with the proper files.
	184	*/
	185	static struct cache_entry refresh_entry(struct cache_entry ce)
	186	{
	187	struct stat st;
	188	struct cache_entry *updated;
	189	int changed, size;
	190
8ae0a8c5	191	if (lstat(ce->name, &st) < 0)
c6e007b0	192	return ERR_PTR(-errno);
711cf3a0	193
5d728c84	194	changed = ce_match_stat(ce, &st);
711cf3a0 LT	195	if (!changed)
	196	return ce;
	197
121481ab	198	/*
8ae0a8c5	199	* If the mode or type has changed, there's no point in trying
711cf3a0	200	* to refresh the entry - it's not going to match
121481ab	201	*/
8ae0a8c5	202	if (changed & (MODE_CHANGED \| TYPE_CHANGED))
c6e007b0	203	return ERR_PTR(-EINVAL);
711cf3a0	204
ffbe1add KS	205	switch (st.st_mode & S_IFMT) {
	206	case S_IFREG:
	207	if (compare_data(ce, st.st_size))
	208	return ERR_PTR(-EINVAL);
	209	break;
	210	case S_IFLNK:
	211	if (compare_link(ce, st.st_size))
	212	return ERR_PTR(-EINVAL);
	213	break;
	214	default:
c6e007b0	215	return ERR_PTR(-EINVAL);
ffbe1add	216	}
711cf3a0 LT	217
711cf3a0 LT	218	size = ce_size(ce);
812666c8	219	updated = xmalloc(size);
711cf3a0 LT	220	memcpy(updated, ce, size);
	221	fill_stat_cache_info(updated, &st);
	222	return updated;
121481ab LT	223	}
121481ab LT	224
90535218	225	static int refresh_cache(void)
121481ab LT	226	{
121481ab LT	227	int i;
90535218	228	int has_errors = 0;
121481ab	229
711cf3a0	230	for (i = 0; i < active_nr; i++) {
1bc992ac JH	231	struct cache_entry ce, new;
	232	ce = active_cache[i];
	233	if (ce_stage(ce)) {
	234	printf("%s: needs merge\n", ce->name);
90535218	235	has_errors = 1;
1bc992ac JH	236	while ((i < active_nr) &&
	237	! strcmp(active_cache[i]->name, ce->name))
	238	i++;
	239	i--;
	240	continue;
	241	}
711cf3a0	242
1bc992ac	243	new = refresh_entry(ce);
c6e007b0	244	if (IS_ERR(new)) {
90535218	245	if (!(not_new && PTR_ERR(new) == -ENOENT)) {
c6e007b0	246	printf("%s: needs update\n", ce->name);
90535218 JH	247	has_errors = 1;
90535218 JH	248	}
711cf3a0 LT	249	continue;
711cf3a0 LT	250	}
ee267527	251	active_cache_changed = 1;
62d046a0 PB	252	/* You can NOT just free active_cache[i] here, since it
	253	* might not be necessarily malloc()ed but can also come
	254	* from mmap(). */
711cf3a0 LT	255	active_cache[i] = new;
711cf3a0 LT	256	}
90535218	257	return has_errors;
e83c5163 LT	258	}
e83c5163 LT	259
e83c5163 LT	260	/*
	261	* We fundamentally don't like some paths: we don't want
	262	* dot or dot-dot anywhere, and in fact, we don't even want
4bb04f21	263	* any other dot-files (.git or anything else). They
e83c5163 LT	264	* are hidden, for chist sake.
	265	*
	266	* Also, we don't want double slashes or slashes at the
aebb2679	267	* end that can make pathnames ambiguous.
e83c5163 LT	268	*/
	269	static int verify_path(char *path)
	270	{
	271	char c;
	272
	273	goto inside;
	274	for (;;) {
	275	if (!c)
	276	return 1;
	277	if (c == '/') {
	278	inside:
	279	c = *path++;
	280	if (c != '/' && c != '.' && c != '\0')
	281	continue;
	282	return 0;
	283	}
	284	c = *path++;
	285	}
	286	}
	287
9945d980 LT	288	static int add_cacheinfo(char arg1, char arg2, char *arg3)
9945d980 LT	289	{
192268c1	290	int size, len, option;
9945d980 LT	291	unsigned int mode;
	292	unsigned char sha1[20];
	293	struct cache_entry *ce;
	294
	295	if (sscanf(arg1, "%o", &mode) != 1)
	296	return -1;
9945d980 LT	297	if (get_sha1_hex(arg2, sha1))
9945d980 LT	298	return -1;
9945d980 LT	299	if (!verify_path(arg3))
9945d980 LT	300	return -1;
9945d980 LT	301
	302	len = strlen(arg3);
	303	size = cache_entry_size(len);
812666c8	304	ce = xmalloc(size);
9945d980 LT	305	memset(ce, 0, size);
	306
	307	memcpy(ce->sha1, sha1, 20);
	308	memcpy(ce->name, arg3, len);
f5cabd13	309	ce->ce_flags = htons(len);
e4479470	310	ce->ce_mode = create_ce_mode(mode);
192268c1 JH	311	option = allow_add ? ADD_CACHE_OK_TO_ADD : 0;
	312	option \|= allow_replace ? ADD_CACHE_OK_TO_REPLACE : 0;
	313	return add_cache_entry(ce, option);
9945d980 LT	314	}
9945d980 LT	315
bb233d69	316	static const char *lockfile_name = NULL;
9614b8dc LT	317
	318	static void remove_lock_file(void)
	319	{
bb233d69 LT	320	if (lockfile_name)
bb233d69 LT	321	unlink(lockfile_name);
9614b8dc LT	322	}
9614b8dc LT	323
f2a19340 LT	324	static void remove_lock_file_on_signal(int signo)
	325	{
	326	remove_lock_file();
	327	}
	328
e83c5163 LT	329	int main(int argc, char **argv)
e83c5163 LT	330	{
90535218	331	int i, newfd, entries, has_errors = 0;
121481ab	332	int allow_options = 1;
bb233d69 LT	333	static char lockfile[MAXPATHLEN+1];
bb233d69 LT	334	const char *indexfile = get_index_file();
e83c5163	335
bb233d69 LT	336	snprintf(lockfile, sizeof(lockfile), "%s.lock", indexfile);
	337
	338	newfd = open(lockfile, O_RDWR \| O_CREAT \| O_EXCL, 0600);
9614b8dc	339	if (newfd < 0)
2de381f9	340	die("unable to create new cachefile");
9614b8dc	341
f2a19340	342	signal(SIGINT, remove_lock_file_on_signal);
9614b8dc	343	atexit(remove_lock_file);
bb233d69	344	lockfile_name = lockfile;
9614b8dc	345
e83c5163	346	entries = read_cache();
9614b8dc	347	if (entries < 0)
2de381f9	348	die("cache corrupted");
e83c5163	349
e83c5163 LT	350	for (i = 1 ; i < argc; i++) {
e83c5163 LT	351	char *path = argv[i];
121481ab LT	352
	353	if (allow_options && *path == '-') {
	354	if (!strcmp(path, "--")) {
	355	allow_options = 0;
	356	continue;
	357	}
	358	if (!strcmp(path, "--add")) {
	359	allow_add = 1;
	360	continue;
	361	}
192268c1 JH	362	if (!strcmp(path, "--replace")) {
	363	allow_replace = 1;
	364	continue;
	365	}
121481ab LT	366	if (!strcmp(path, "--remove")) {
	367	allow_remove = 1;
	368	continue;
	369	}
	370	if (!strcmp(path, "--refresh")) {
90535218	371	has_errors \|= refresh_cache();
121481ab LT	372	continue;
121481ab LT	373	}
9945d980	374	if (!strcmp(path, "--cacheinfo")) {
b3f94c4b	375	if (i+3 >= argc)
9945d980	376	die("update-cache: --cacheinfo <mode> <sha1> <path>");
b3f94c4b JH	377	if (add_cacheinfo(argv[i+1], argv[i+2], argv[i+3]))
b3f94c4b JH	378	die("update-cache: --cacheinfo cannot add %s", argv[i+3]);
9945d980 LT	379	i += 3;
	380	continue;
	381	}
0ff5bf7c JH	382	if (!strcmp(path, "--force-remove")) {
	383	if (argc <= i + 1)
	384	die("update-cache: --force-remove <path>");
	385	if (remove_file_from_cache(argv[i+1]))
	386	die("update-cache: --force-remove cannot remove %s", argv[i+1]);
	387	i++;
	388	continue;
	389	}
	390
c6e007b0 JB	391	if (!strcmp(path, "--ignore-missing")) {
	392	not_new = 1;
	393	continue;
	394	}
2de381f9	395	die("unknown option %s", path);
121481ab	396	}
e83c5163 LT	397	if (!verify_path(path)) {
	398	fprintf(stderr, "Ignoring path %s\n", argv[i]);
	399	continue;
	400	}
9614b8dc	401	if (add_file_to_cache(path))
2de381f9	402	die("Unable to add %s to database", path);
e83c5163	403	}
ee267527	404	if (write_cache(newfd, active_cache, active_nr) \|\| rename(lockfile, indexfile))
2de381f9	405	die("Unable to write new cachefile");
9614b8dc	406
bb233d69	407	lockfile_name = NULL;
c4b83e61	408	return has_errors ? 1 : 0;
e83c5163	409	}