[thirdparty/git.git] / bundle.c

#include "cache.h"
#include "bundle.h"
#include "object.h"
#include "commit.h"
#include "diff.h"
#include "revision.h"
#include "list-objects.h"
#include "run-command.h"
#include "refs.h"

static const char bundle_signature[] = "# v2 git bundle\n";

static void add_to_ref_list(const unsigned char *sha1, const char *name,
		struct ref_list *list)
{
	if (list->nr + 1 >= list->alloc) {
		list->alloc = alloc_nr(list->nr + 1);
		list->list = xrealloc(list->list,
				list->alloc * sizeof(list->list[0]));
	}
	memcpy(list->list[list->nr].sha1, sha1, 20);
	list->list[list->nr].name = xstrdup(name);
	list->nr++;
}

/* returns an fd */
int read_bundle_header(const char *path, struct bundle_header *header)
{
	char buffer[1024];
	int fd;
	long fpos;
	FILE *ffd = fopen(path, "rb");

	if (!ffd)
		return error("could not open '%s'", path);
	if (!fgets(buffer, sizeof(buffer), ffd) ||
			strcmp(buffer, bundle_signature)) {
		fclose(ffd);
		return error("'%s' does not look like a v2 bundle file", path);
	}
	while (fgets(buffer, sizeof(buffer), ffd)
			&& buffer[0] != '\n') {
		int is_prereq = buffer[0] == '-';
		int offset = is_prereq ? 1 : 0;
		int len = strlen(buffer);
		unsigned char sha1[20];
		struct ref_list *list = is_prereq ? &header->prerequisites
			: &header->references;
		char delim;

		if (len && buffer[len - 1] == '\n')
			buffer[len - 1] = '\0';
		if (get_sha1_hex(buffer + offset, sha1)) {
			warning("unrecognized header: %s", buffer);
			continue;
		}
		delim = buffer[40 + offset];
		if (!isspace(delim) && (delim != '\0' || !is_prereq))
			die ("invalid header: %s", buffer);
		add_to_ref_list(sha1, isspace(delim) ?
				buffer + 41 + offset : "", list);
	}
	fpos = ftell(ffd);
	fclose(ffd);
	fd = open(path, O_RDONLY);
	if (fd < 0)
		return error("could not open '%s'", path);
	lseek(fd, fpos, SEEK_SET);
	return fd;
}

static int list_refs(struct ref_list *r, int argc, const char **argv)
{
	int i;

	for (i = 0; i < r->nr; i++) {
		if (argc > 1) {
			int j;
			for (j = 1; j < argc; j++)
				if (!strcmp(r->list[i].name, argv[j]))
					break;
			if (j == argc)
				continue;
		}
		printf("%s %s\n", sha1_to_hex(r->list[i].sha1),
				r->list[i].name);
	}
	return 0;
}

#define PREREQ_MARK (1u<<16)

int verify_bundle(struct bundle_header *header, int verbose)
{
	/*
	 * Do fast check, then if any prereqs are missing then go line by line
	 * to be verbose about the errors
	 */
	struct ref_list *p = &header->prerequisites;
	struct rev_info revs;
	const char *argv[] = {NULL, "--all"};
	struct object_array refs;
	struct commit *commit;
	int i, ret = 0, req_nr;
	const char *message = "Repository lacks these prerequisite commits:";

	init_revisions(&revs, NULL);
	for (i = 0; i < p->nr; i++) {
		struct ref_list_entry *e = p->list + i;
		struct object *o = parse_object(e->sha1);
		if (o) {
			o->flags |= PREREQ_MARK;
			add_pending_object(&revs, o, e->name);
			continue;
		}
		if (++ret == 1)
			error(message);
		error("%s %s", sha1_to_hex(e->sha1), e->name);
	}
	if (revs.pending.nr != p->nr)
		return ret;
	req_nr = revs.pending.nr;
	setup_revisions(2, argv, &revs, NULL);

	memset(&refs, 0, sizeof(struct object_array));
	for (i = 0; i < revs.pending.nr; i++) {
		struct object_array_entry *e = revs.pending.objects + i;
		add_object_array(e->item, e->name, &refs);
	}

	if (prepare_revision_walk(&revs))
		die("revision walk setup failed");

	i = req_nr;
	while (i && (commit = get_revision(&revs)))
		if (commit->object.flags & PREREQ_MARK)
			i--;

	for (i = 0; i < req_nr; i++)
		if (!(refs.objects[i].item->flags & SHOWN)) {
			if (++ret == 1)
				error(message);
			error("%s %s", sha1_to_hex(refs.objects[i].item->sha1),
				refs.objects[i].name);
		}

	for (i = 0; i < refs.nr; i++)
		clear_commit_marks((struct commit *)refs.objects[i].item, -1);

	if (verbose) {
		struct ref_list *r;

		r = &header->references;
		printf("The bundle contains %d ref%s\n",
		       r->nr, (1 < r->nr) ? "s" : "");
		list_refs(r, 0, NULL);
		r = &header->prerequisites;
		printf("The bundle requires these %d ref%s\n",
		       r->nr, (1 < r->nr) ? "s" : "");
		list_refs(r, 0, NULL);
	}
	return ret;
}

int list_bundle_refs(struct bundle_header *header, int argc, const char **argv)
{
	return list_refs(&header->references, argc, argv);
}

int create_bundle(struct bundle_header *header, const char *path,
		int argc, const char **argv)
{
	static struct lock_file lock;
	int bundle_fd = -1;
	int bundle_to_stdout;
	const char **argv_boundary = xmalloc((argc + 4) * sizeof(const char *));
	const char **argv_pack = xmalloc(5 * sizeof(const char *));
	int i, ref_count = 0;
	char buffer[1024];
	struct rev_info revs;
	struct child_process rls;
	FILE *rls_fout;

	bundle_to_stdout = !strcmp(path, "-");
	if (bundle_to_stdout)
		bundle_fd = 1;
	else
		bundle_fd = hold_lock_file_for_update(&lock, path, 1);

	/* write signature */
	write_or_die(bundle_fd, bundle_signature, strlen(bundle_signature));

	/* init revs to list objects for pack-objects later */
	save_commit_buffer = 0;
	init_revisions(&revs, NULL);

	/* write prerequisites */
	memcpy(argv_boundary + 3, argv + 1, argc * sizeof(const char *));
	argv_boundary[0] = "rev-list";
	argv_boundary[1] = "--boundary";
	argv_boundary[2] = "--pretty=oneline";
	argv_boundary[argc + 2] = NULL;
	memset(&rls, 0, sizeof(rls));
	rls.argv = argv_boundary;
	rls.out = -1;
	rls.git_cmd = 1;
	if (start_command(&rls))
		return -1;
	rls_fout = fdopen(rls.out, "r");
	while (fgets(buffer, sizeof(buffer), rls_fout)) {
		unsigned char sha1[20];
		if (buffer[0] == '-') {
			write_or_die(bundle_fd, buffer, strlen(buffer));
			if (!get_sha1_hex(buffer + 1, sha1)) {
				struct object *object = parse_object(sha1);
				object->flags |= UNINTERESTING;
				add_pending_object(&revs, object, buffer);
			}
		} else if (!get_sha1_hex(buffer, sha1)) {
			struct object *object = parse_object(sha1);
			object->flags |= SHOWN;
		}
	}
	fclose(rls_fout);
	if (finish_command(&rls))
		return error("rev-list died");

	/* write references */
	argc = setup_revisions(argc, argv, &revs, NULL);
	if (argc > 1)
		return error("unrecognized argument: %s'", argv[1]);

	for (i = 0; i < revs.pending.nr; i++) {
		struct object_array_entry *e = revs.pending.objects + i;
		unsigned char sha1[20];
		char *ref;
		const char *display_ref;
		int flag;

		if (e->item->flags & UNINTERESTING)
			continue;
		if (dwim_ref(e->name, strlen(e->name), sha1, &ref) != 1)
			continue;
		if (!resolve_ref(e->name, sha1, 1, &flag))
			flag = 0;
		display_ref = (flag & REF_ISSYMREF) ? e->name : ref;

		/*
		 * Make sure the refs we wrote out is correct; --max-count and
		 * other limiting options could have prevented all the tips
		 * from getting output.
		 *
		 * Non commit objects such as tags and blobs do not have
		 * this issue as they are not affected by those extra
		 * constraints.
		 */
		if (!(e->item->flags & SHOWN) && e->item->type == OBJ_COMMIT) {
			warning("ref '%s' is excluded by the rev-list options",
				e->name);
			free(ref);
			continue;
		}
		/*
		 * If you run "git bundle create bndl v1.0..v2.0", the
		 * name of the positive ref is "v2.0" but that is the
		 * commit that is referenced by the tag, and not the tag
		 * itself.
		 */
		if (hashcmp(sha1, e->item->sha1)) {
			/*
			 * Is this the positive end of a range expressed
			 * in terms of a tag (e.g. v2.0 from the range
			 * "v1.0..v2.0")?
			 */
			struct commit *one = lookup_commit_reference(sha1);
			struct object *obj;

			if (e->item == &(one->object)) {
				/*
				 * Need to include e->name as an
				 * independent ref to the pack-objects
				 * input, so that the tag is included
				 * in the output; otherwise we would
				 * end up triggering "empty bundle"
				 * error.
				 */
				obj = parse_object(sha1);
				obj->flags |= SHOWN;
				add_pending_object(&revs, obj, e->name);
			}
			free(ref);
			continue;
		}

		ref_count++;
		write_or_die(bundle_fd, sha1_to_hex(e->item->sha1), 40);
		write_or_die(bundle_fd, " ", 1);
		write_or_die(bundle_fd, display_ref, strlen(display_ref));
		write_or_die(bundle_fd, "\n", 1);
		free(ref);
	}
	if (!ref_count)
		die ("Refusing to create empty bundle.");

	/* end header */
	write_or_die(bundle_fd, "\n", 1);

	/* write pack */
	argv_pack[0] = "pack-objects";
	argv_pack[1] = "--all-progress";
	argv_pack[2] = "--stdout";
	argv_pack[3] = "--thin";
	argv_pack[4] = NULL;
	memset(&rls, 0, sizeof(rls));
	rls.argv = argv_pack;
	rls.in = -1;
	rls.out = bundle_fd;
	rls.git_cmd = 1;
	if (start_command(&rls))
		return error("Could not spawn pack-objects");

	/*
	 * start_command closed bundle_fd if it was > 1
	 * so set the lock fd to -1 so commit_lock_file()
	 * won't fail trying to close it.
	 */
	lock.fd = -1;

	for (i = 0; i < revs.pending.nr; i++) {
		struct object *object = revs.pending.objects[i].item;
		if (object->flags & UNINTERESTING)
			write_or_die(rls.in, "^", 1);
		write_or_die(rls.in, sha1_to_hex(object->sha1), 40);
		write_or_die(rls.in, "\n", 1);
	}
	close(rls.in);
	if (finish_command(&rls))
		return error ("pack-objects died");

	return bundle_to_stdout ? close(bundle_fd) : commit_lock_file(&lock);
}

int unbundle(struct bundle_header *header, int bundle_fd)
{
	const char *argv_index_pack[] = {"index-pack",
		"--fix-thin", "--stdin", NULL};
	struct child_process ip;

	if (verify_bundle(header, 0))
		return -1;
	memset(&ip, 0, sizeof(ip));
	ip.argv = argv_index_pack;
	ip.in = bundle_fd;
	ip.no_stdout = 1;
	ip.git_cmd = 1;
	if (run_command(&ip))
		return error("index-pack died");
	return 0;
}
Commit	Line	Data
30415d50 JS	1	#include "cache.h"
	2	#include "bundle.h"
	3	#include "object.h"
	4	#include "commit.h"
	5	#include "diff.h"
	6	#include "revision.h"
	7	#include "list-objects.h"
	8	#include "run-command.h"
fa303836	9	#include "refs.h"
30415d50 JS	10
	11	static const char bundle_signature[] = "# v2 git bundle\n";
	12
	13	static void add_to_ref_list(const unsigned char sha1, const char name,
	14	struct ref_list *list)
	15	{
	16	if (list->nr + 1 >= list->alloc) {
	17	list->alloc = alloc_nr(list->nr + 1);
	18	list->list = xrealloc(list->list,
	19	list->alloc * sizeof(list->list[0]));
	20	}
	21	memcpy(list->list[list->nr].sha1, sha1, 20);
	22	list->list[list->nr].name = xstrdup(name);
	23	list->nr++;
	24	}
	25
	26	/* returns an fd */
f3fa1838 JH	27	int read_bundle_header(const char path, struct bundle_header header)
f3fa1838 JH	28	{
30415d50 JS	29	char buffer[1024];
	30	int fd;
	31	long fpos;
	32	FILE *ffd = fopen(path, "rb");
	33
	34	if (!ffd)
	35	return error("could not open '%s'", path);
	36	if (!fgets(buffer, sizeof(buffer), ffd) \|\|
	37	strcmp(buffer, bundle_signature)) {
	38	fclose(ffd);
	39	return error("'%s' does not look like a v2 bundle file", path);
	40	}
	41	while (fgets(buffer, sizeof(buffer), ffd)
	42	&& buffer[0] != '\n') {
	43	int is_prereq = buffer[0] == '-';
	44	int offset = is_prereq ? 1 : 0;
	45	int len = strlen(buffer);
	46	unsigned char sha1[20];
	47	struct ref_list *list = is_prereq ? &header->prerequisites
	48	: &header->references;
	49	char delim;
	50
872c930d	51	if (len && buffer[len - 1] == '\n')
30415d50 JS	52	buffer[len - 1] = '\0';
	53	if (get_sha1_hex(buffer + offset, sha1)) {
	54	warning("unrecognized header: %s", buffer);
	55	continue;
	56	}
	57	delim = buffer[40 + offset];
	58	if (!isspace(delim) && (delim != '\0' \|\| !is_prereq))
	59	die ("invalid header: %s", buffer);
	60	add_to_ref_list(sha1, isspace(delim) ?
	61	buffer + 41 + offset : "", list);
	62	}
	63	fpos = ftell(ffd);
	64	fclose(ffd);
	65	fd = open(path, O_RDONLY);
	66	if (fd < 0)
	67	return error("could not open '%s'", path);
	68	lseek(fd, fpos, SEEK_SET);
	69	return fd;
	70	}
	71
	72	static int list_refs(struct ref_list r, int argc, const char *argv)
	73	{
	74	int i;
	75
	76	for (i = 0; i < r->nr; i++) {
	77	if (argc > 1) {
	78	int j;
	79	for (j = 1; j < argc; j++)
	80	if (!strcmp(r->list[i].name, argv[j]))
	81	break;
	82	if (j == argc)
	83	continue;
	84	}
	85	printf("%s %s\n", sha1_to_hex(r->list[i].sha1),
	86	r->list[i].name);
	87	}
	88	return 0;
	89	}
	90
	91	#define PREREQ_MARK (1u<<16)
	92
	93	int verify_bundle(struct bundle_header *header, int verbose)
	94	{
	95	/*
	96	* Do fast check, then if any prereqs are missing then go line by line
	97	* to be verbose about the errors
	98	*/
	99	struct ref_list *p = &header->prerequisites;
	100	struct rev_info revs;
	101	const char *argv[] = {NULL, "--all"};
	102	struct object_array refs;
	103	struct commit *commit;
	104	int i, ret = 0, req_nr;
	105	const char *message = "Repository lacks these prerequisite commits:";
	106
	107	init_revisions(&revs, NULL);
	108	for (i = 0; i < p->nr; i++) {
	109	struct ref_list_entry *e = p->list + i;
	110	struct object *o = parse_object(e->sha1);
	111	if (o) {
	112	o->flags \|= PREREQ_MARK;
	113	add_pending_object(&revs, o, e->name);
	114	continue;
	115	}
116	if (++ret == 1)
117	error(message);
118	error("%s %s", sha1_to_hex(e->sha1), e->name);
119	}
120	if (revs.pending.nr != p->nr)
121	return ret;
122	req_nr = revs.pending.nr;
123	setup_revisions(2, argv, &revs, NULL);
124
125	memset(&refs, 0, sizeof(struct object_array));
126	for (i = 0; i < revs.pending.nr; i++) {
127	struct object_array_entry *e = revs.pending.objects + i;
128	add_object_array(e->item, e->name, &refs);
129	}
130
3d51e1b5 MK	131	if (prepare_revision_walk(&revs))
3d51e1b5 MK	132	die("revision walk setup failed");
30415d50 JS	133
	134	i = req_nr;
	135	while (i && (commit = get_revision(&revs)))
	136	if (commit->object.flags & PREREQ_MARK)
	137	i--;
	138
	139	for (i = 0; i < req_nr; i++)
	140	if (!(refs.objects[i].item->flags & SHOWN)) {
	141	if (++ret == 1)
	142	error(message);
	143	error("%s %s", sha1_to_hex(refs.objects[i].item->sha1),
	144	refs.objects[i].name);
	145	}
	146
	147	for (i = 0; i < refs.nr; i++)
	148	clear_commit_marks((struct commit *)refs.objects[i].item, -1);
	149
	150	if (verbose) {
	151	struct ref_list *r;
	152
	153	r = &header->references;
	154	printf("The bundle contains %d ref%s\n",
	155	r->nr, (1 < r->nr) ? "s" : "");
	156	list_refs(r, 0, NULL);
	157	r = &header->prerequisites;
	158	printf("The bundle requires these %d ref%s\n",
	159	r->nr, (1 < r->nr) ? "s" : "");
	160	list_refs(r, 0, NULL);
	161	}
	162	return ret;
	163	}
	164
	165	int list_bundle_refs(struct bundle_header header, int argc, const char *argv)
	166	{
	167	return list_refs(&header->references, argc, argv);
	168	}
	169
	170	int create_bundle(struct bundle_header header, const char path,
	171	int argc, const char **argv)
	172	{
	173	static struct lock_file lock;
	174	int bundle_fd = -1;
	175	int bundle_to_stdout;
	176	const char *argv_boundary = xmalloc((argc + 4) sizeof(const char *));
	177	const char *argv_pack = xmalloc(5 sizeof(const char *));
	178	int i, ref_count = 0;
	179	char buffer[1024];
	180	struct rev_info revs;
	181	struct child_process rls;
	182	FILE *rls_fout;
	183
	184	bundle_to_stdout = !strcmp(path, "-");
	185	if (bundle_to_stdout)
	186	bundle_fd = 1;
	187	else
	188	bundle_fd = hold_lock_file_for_update(&lock, path, 1);
	189
	190	/* write signature */
	191	write_or_die(bundle_fd, bundle_signature, strlen(bundle_signature));
	192
	193	/* init revs to list objects for pack-objects later */
	194	save_commit_buffer = 0;
	195	init_revisions(&revs, NULL);
	196
197	/* write prerequisites */
198	memcpy(argv_boundary + 3, argv + 1, argc * sizeof(const char *));
199	argv_boundary[0] = "rev-list";
200	argv_boundary[1] = "--boundary";
201	argv_boundary[2] = "--pretty=oneline";
202	argv_boundary[argc + 2] = NULL;
203	memset(&rls, 0, sizeof(rls));
204	rls.argv = argv_boundary;
205	rls.out = -1;
206	rls.git_cmd = 1;
207	if (start_command(&rls))
208	return -1;
209	rls_fout = fdopen(rls.out, "r");
210	while (fgets(buffer, sizeof(buffer), rls_fout)) {
211	unsigned char sha1[20];
212	if (buffer[0] == '-') {
213	write_or_die(bundle_fd, buffer, strlen(buffer));
214	if (!get_sha1_hex(buffer + 1, sha1)) {
215	struct object *object = parse_object(sha1);
216	object->flags \|= UNINTERESTING;
217	add_pending_object(&revs, object, buffer);
218	}
219	} else if (!get_sha1_hex(buffer, sha1)) {
220	struct object *object = parse_object(sha1);
221	object->flags \|= SHOWN;
222	}
223	}
224	fclose(rls_fout);
225	if (finish_command(&rls))
226	return error("rev-list died");
227
228	/* write references */
229	argc = setup_revisions(argc, argv, &revs, NULL);
230	if (argc > 1)
231	return error("unrecognized argument: %s'", argv[1]);
232
233	for (i = 0; i < revs.pending.nr; i++) {
234	struct object_array_entry *e = revs.pending.objects + i;
235	unsigned char sha1[20];
236	char *ref;
fa303836 JH	237	const char *display_ref;
fa303836 JH	238	int flag;
30415d50 JS	239
	240	if (e->item->flags & UNINTERESTING)
	241	continue;
	242	if (dwim_ref(e->name, strlen(e->name), sha1, &ref) != 1)
	243	continue;
fa303836 JH	244	if (!resolve_ref(e->name, sha1, 1, &flag))
	245	flag = 0;
	246	display_ref = (flag & REF_ISSYMREF) ? e->name : ref;
	247
30415d50 JS	248	/*
	249	* Make sure the refs we wrote out is correct; --max-count and
	250	* other limiting options could have prevented all the tips
	251	* from getting output.
	252	*
	253	* Non commit objects such as tags and blobs do not have
	254	* this issue as they are not affected by those extra
	255	* constraints.
	256	*/
	257	if (!(e->item->flags & SHOWN) && e->item->type == OBJ_COMMIT) {
	258	warning("ref '%s' is excluded by the rev-list options",
	259	e->name);
	260	free(ref);
	261	continue;
	262	}
	263	/*
	264	* If you run "git bundle create bndl v1.0..v2.0", the
	265	* name of the positive ref is "v2.0" but that is the
	266	* commit that is referenced by the tag, and not the tag
	267	* itself.
	268	*/
	269	if (hashcmp(sha1, e->item->sha1)) {
	270	/*
	271	* Is this the positive end of a range expressed
	272	* in terms of a tag (e.g. v2.0 from the range
	273	* "v1.0..v2.0")?
	274	*/
	275	struct commit *one = lookup_commit_reference(sha1);
	276	struct object *obj;
	277
	278	if (e->item == &(one->object)) {
	279	/*
	280	* Need to include e->name as an
	281	* independent ref to the pack-objects
	282	* input, so that the tag is included
	283	* in the output; otherwise we would
	284	* end up triggering "empty bundle"
	285	* error.
	286	*/
	287	obj = parse_object(sha1);
	288	obj->flags \|= SHOWN;
	289	add_pending_object(&revs, obj, e->name);
	290	}
	291	free(ref);
	292	continue;
	293	}
	294
	295	ref_count++;
	296	write_or_die(bundle_fd, sha1_to_hex(e->item->sha1), 40);
	297	write_or_die(bundle_fd, " ", 1);
fa303836	298	write_or_die(bundle_fd, display_ref, strlen(display_ref));
30415d50 JS	299	write_or_die(bundle_fd, "\n", 1);
	300	free(ref);
	301	}
	302	if (!ref_count)
	303	die ("Refusing to create empty bundle.");
	304
	305	/* end header */
	306	write_or_die(bundle_fd, "\n", 1);
	307
	308	/* write pack */
	309	argv_pack[0] = "pack-objects";
	310	argv_pack[1] = "--all-progress";
	311	argv_pack[2] = "--stdout";
	312	argv_pack[3] = "--thin";
	313	argv_pack[4] = NULL;
	314	memset(&rls, 0, sizeof(rls));
	315	rls.argv = argv_pack;
	316	rls.in = -1;
	317	rls.out = bundle_fd;
	318	rls.git_cmd = 1;
	319	if (start_command(&rls))
	320	return error("Could not spawn pack-objects");
4ed7cd3a BC	321
	322	/*
	323	* start_command closed bundle_fd if it was > 1
	324	* so set the lock fd to -1 so commit_lock_file()
	325	* won't fail trying to close it.
	326	*/
	327	lock.fd = -1;
	328
30415d50 JS	329	for (i = 0; i < revs.pending.nr; i++) {
	330	struct object *object = revs.pending.objects[i].item;
	331	if (object->flags & UNINTERESTING)
95693d45 JM	332	write_or_die(rls.in, "^", 1);
	333	write_or_die(rls.in, sha1_to_hex(object->sha1), 40);
	334	write_or_die(rls.in, "\n", 1);
30415d50	335	}
e72ae288	336	close(rls.in);
30415d50 JS	337	if (finish_command(&rls))
30415d50 JS	338	return error ("pack-objects died");
4ed7cd3a BC	339
4ed7cd3a BC	340	return bundle_to_stdout ? close(bundle_fd) : commit_lock_file(&lock);
30415d50 JS	341	}
	342
	343	int unbundle(struct bundle_header *header, int bundle_fd)
	344	{
	345	const char *argv_index_pack[] = {"index-pack",
	346	"--fix-thin", "--stdin", NULL};
	347	struct child_process ip;
	348
	349	if (verify_bundle(header, 0))
	350	return -1;
	351	memset(&ip, 0, sizeof(ip));
	352	ip.argv = argv_index_pack;
	353	ip.in = bundle_fd;
	354	ip.no_stdout = 1;
	355	ip.git_cmd = 1;
	356	if (run_command(&ip))
	357	return error("index-pack died");
	358	return 0;
	359	}