[thirdparty/git.git] / send-pack.c

#include "cache.h"
#include "commit.h"
#include "tag.h"
#include "refs.h"
#include "pkt-line.h"
#include "exec_cmd.h"

static const char send_pack_usage[] =
"git-send-pack [--all] [--exec=git-receive-pack] <remote> [<head>...]\n"
"  --all and explicit <head> specification are mutually exclusive.";
static const char *exec = "git-receive-pack";
static int verbose = 0;
static int send_all = 0;
static int force_update = 0;
static int use_thin_pack = 0;

static int is_zero_sha1(const unsigned char *sha1)
{
	int i;

	for (i = 0; i < 20; i++) {
		if (*sha1++)
			return 0;
	}
	return 1;
}

static void exec_pack_objects(void)
{
	static char *args[] = {
		"pack-objects",
		"--stdout",
		NULL
	};
	execv_git_cmd(args);
	die("git-pack-objects exec failed (%s)", strerror(errno));
}

static void exec_rev_list(struct ref *refs)
{
	struct ref *ref;
	static char *args[1000];
	int i = 0, j;

	args[i++] = "rev-list";	/* 0 */
	if (use_thin_pack)	/* 1 */
		args[i++] = "--objects-edge";
	else
		args[i++] = "--objects";

	/* First send the ones we care about most */
	for (ref = refs; ref; ref = ref->next) {
		if (900 < i)
			die("git-rev-list environment overflow");
		if (!is_zero_sha1(ref->new_sha1)) {
			char *buf = malloc(100);
			args[i++] = buf;
			snprintf(buf, 50, "%s", sha1_to_hex(ref->new_sha1));
			buf += 50;
			if (!is_zero_sha1(ref->old_sha1) &&
			    has_sha1_file(ref->old_sha1)) {
				args[i++] = buf;
				snprintf(buf, 50, "^%s",
					 sha1_to_hex(ref->old_sha1));
			}
		}
	}

	/* Then a handful of the remainder
	 * NEEDSWORK: we would be better off if used the newer ones first.
	 */
	for (ref = refs, j = i + 16;
	     i < 900 && i < j && ref;
	     ref = ref->next) {
		if (is_zero_sha1(ref->new_sha1) &&
		    !is_zero_sha1(ref->old_sha1) &&
		    has_sha1_file(ref->old_sha1)) {
			char *buf = malloc(42);
			args[i++] = buf;
			snprintf(buf, 42, "^%s", sha1_to_hex(ref->old_sha1));
		}
	}
	args[i] = NULL;
	execv_git_cmd(args);
	die("git-rev-list exec failed (%s)", strerror(errno));
}

static void rev_list(int fd, struct ref *refs)
{
	int pipe_fd[2];
	pid_t pack_objects_pid;

	if (pipe(pipe_fd) < 0)
		die("rev-list setup: pipe failed");
	pack_objects_pid = fork();
	if (!pack_objects_pid) {
		dup2(pipe_fd[0], 0);
		dup2(fd, 1);
		close(pipe_fd[0]);
		close(pipe_fd[1]);
		close(fd);
		exec_pack_objects();
		die("pack-objects setup failed");
	}
	if (pack_objects_pid < 0)
		die("pack-objects fork failed");
	dup2(pipe_fd[1], 1);
	close(pipe_fd[0]);
	close(pipe_fd[1]);
	close(fd);
	exec_rev_list(refs);
}

static int pack_objects(int fd, struct ref *refs)
{
	pid_t rev_list_pid;

	rev_list_pid = fork();
	if (!rev_list_pid) {
		rev_list(fd, refs);
		die("rev-list setup failed");
	}
	if (rev_list_pid < 0)
		die("rev-list fork failed");
	/*
	 * We don't wait for the rev-list pipeline in the parent:
	 * we end up waiting for the other end instead
	 */
	return 0;
}

static void unmark_and_free(struct commit_list *list, unsigned int mark)
{
	while (list) {
		struct commit_list *temp = list;
		temp->item->object.flags &= ~mark;
		list = temp->next;
		free(temp);
	}
}

static int ref_newer(const unsigned char *new_sha1,
		     const unsigned char *old_sha1)
{
	struct object *o;
	struct commit *old, *new;
	struct commit_list *list, *used;
	int found = 0;

	/* Both new and old must be commit-ish and new is descendant of
	 * old.  Otherwise we require --force.
	 */
	o = deref_tag(parse_object(old_sha1), NULL, 0);
	if (!o || o->type != commit_type)
		return 0;
	old = (struct commit *) o;

	o = deref_tag(parse_object(new_sha1), NULL, 0);
	if (!o || o->type != commit_type)
		return 0;
	new = (struct commit *) o;

	if (parse_commit(new) < 0)
		return 0;

	used = list = NULL;
	commit_list_insert(new, &list);
	while (list) {
		new = pop_most_recent_commit(&list, 1);
		commit_list_insert(new, &used);
		if (new == old) {
			found = 1;
			break;
		}
	}
	unmark_and_free(list, 1);
	unmark_and_free(used, 1);
	return found;
}

static struct ref *local_refs, **local_tail;
static struct ref *remote_refs, **remote_tail;

static int one_local_ref(const char *refname, const unsigned char *sha1)
{
	struct ref *ref;
	int len = strlen(refname) + 1;
	ref = xcalloc(1, sizeof(*ref) + len);
	memcpy(ref->new_sha1, sha1, 20);
	memcpy(ref->name, refname, len);
	*local_tail = ref;
	local_tail = &ref->next;
	return 0;
}

static void get_local_heads(void)
{
	local_tail = &local_refs;
	for_each_ref(one_local_ref);
}

static int receive_status(int in)
{
	char line[1000];
	int ret = 0;
	int len = packet_read_line(in, line, sizeof(line));
	if (len < 10 || memcmp(line, "unpack ", 7)) {
		fprintf(stderr, "did not receive status back\n");
		return -1;
	}
	if (memcmp(line, "unpack ok\n", 10)) {
		fputs(line, stderr);
		ret = -1;
	}
	while (1) {
		len = packet_read_line(in, line, sizeof(line));
		if (!len)
			break;
		if (len < 3 ||
		    (memcmp(line, "ok", 2) && memcmp(line, "ng", 2))) {
			fprintf(stderr, "protocol error: %s\n", line);
			ret = -1;
			break;
		}
		if (!memcmp(line, "ok", 2))
			continue;
		fputs(line, stderr);
		ret = -1;
	}
	return ret;
}

static int send_pack(int in, int out, int nr_refspec, char **refspec)
{
	struct ref *ref;
	int new_refs;
	int ret = 0;
	int ask_for_status_report = 0;
	int expect_status_report = 0;

	/* No funny business with the matcher */
	remote_tail = get_remote_heads(in, &remote_refs, 0, NULL, 1);
	get_local_heads();

	/* Does the other end support the reporting? */
	if (server_supports("report-status"))
		ask_for_status_report = 1;

	/* match them up */
	if (!remote_tail)
		remote_tail = &remote_refs;
	if (match_refs(local_refs, remote_refs, &remote_tail,
		       nr_refspec, refspec, send_all))
		return -1;

	if (!remote_refs) {
		fprintf(stderr, "No refs in common and none specified; doing nothing.\n");
		return 0;
	}

	/*
	 * Finally, tell the other end!
	 */
	new_refs = 0;
	for (ref = remote_refs; ref; ref = ref->next) {
		char old_hex[60], *new_hex;
		if (!ref->peer_ref)
			continue;
		if (!memcmp(ref->old_sha1, ref->peer_ref->new_sha1, 20)) {
			if (verbose)
				fprintf(stderr, "'%s': up-to-date\n", ref->name);
			continue;
		}

		/* This part determines what can overwrite what.
		 * The rules are:
		 *
		 * (0) you can always use --force or +A:B notation to
		 *     selectively force individual ref pairs.
		 *
		 * (1) if the old thing does not exist, it is OK.
		 *
		 * (2) if you do not have the old thing, you are not allowed
		 *     to overwrite it; you would not know what you are losing
		 *     otherwise.
		 *
		 * (3) if both new and old are commit-ish, and new is a
		 *     descendant of old, it is OK.
		 */

		if (!force_update &&
		    !is_zero_sha1(ref->old_sha1) &&
		    !ref->force) {
			if (!has_sha1_file(ref->old_sha1) ||
			    !ref_newer(ref->peer_ref->new_sha1,
				       ref->old_sha1)) {
				/* We do not have the remote ref, or
				 * we know that the remote ref is not
				 * an ancestor of what we are trying to
				 * push.  Either way this can be losing
				 * commits at the remote end and likely
				 * we were not up to date to begin with.
				 */
				error("remote '%s' is not a strict "
				      "subset of local ref '%s'. "
				      "maybe you are not up-to-date and "
				      "need to pull first?",
				      ref->name,
				      ref->peer_ref->name);
				ret = -2;
				continue;
			}
		}
		memcpy(ref->new_sha1, ref->peer_ref->new_sha1, 20);
		if (is_zero_sha1(ref->new_sha1)) {
			error("cannot happen anymore");
			ret = -3;
			continue;
		}
		new_refs++;
		strcpy(old_hex, sha1_to_hex(ref->old_sha1));
		new_hex = sha1_to_hex(ref->new_sha1);

		if (ask_for_status_report) {
			packet_write(out, "%s %s %s%c%s",
				     old_hex, new_hex, ref->name, 0,
				     "report-status");
			ask_for_status_report = 0;
			expect_status_report = 1;
		}
		else
			packet_write(out, "%s %s %s",
				     old_hex, new_hex, ref->name);
		fprintf(stderr, "updating '%s'", ref->name);
		if (strcmp(ref->name, ref->peer_ref->name))
			fprintf(stderr, " using '%s'", ref->peer_ref->name);
		fprintf(stderr, "\n  from %s\n  to   %s\n", old_hex, new_hex);
	}

	packet_flush(out);
	if (new_refs)
		pack_objects(out, remote_refs);
	close(out);

	if (expect_status_report) {
		if (receive_status(in))
			ret = -4;
	}

	if (!new_refs && ret == 0)
		fprintf(stderr, "Everything up-to-date\n");
	return ret;
}


int main(int argc, char **argv)
{
	int i, nr_heads = 0;
	char *dest = NULL;
	char **heads = NULL;
	int fd[2], ret;
	pid_t pid;

	setup_git_directory();
	argv++;
	for (i = 1; i < argc; i++, argv++) {
		char *arg = *argv;

		if (*arg == '-') {
			if (!strncmp(arg, "--exec=", 7)) {
				exec = arg + 7;
				continue;
			}
			if (!strcmp(arg, "--all")) {
				send_all = 1;
				continue;
			}
			if (!strcmp(arg, "--force")) {
				force_update = 1;
				continue;
			}
			if (!strcmp(arg, "--verbose")) {
				verbose = 1;
				continue;
			}
			if (!strcmp(arg, "--thin")) {
				use_thin_pack = 1;
				continue;
			}
			usage(send_pack_usage);
		}
		if (!dest) {
			dest = arg;
			continue;
		}
		heads = argv;
		nr_heads = argc - i;
		break;
	}
	if (!dest)
		usage(send_pack_usage);
	if (heads && send_all)
		usage(send_pack_usage);
	pid = git_connect(fd, dest, exec);
	if (pid < 0)
		return 1;
	ret = send_pack(fd[0], fd[1], nr_heads, heads);
	close(fd[0]);
	close(fd[1]);
	finish_connect(pid);
	return ret;
}
Commit	Line	Data
61221472	1	#include "cache.h"
2a9c3fe8	2	#include "commit.h"
37fde874	3	#include "tag.h"
584c6cc9	4	#include "refs.h"
f3a3214e	5	#include "pkt-line.h"
77cb17e9	6	#include "exec_cmd.h"
61221472	7
2a245013	8	static const char send_pack_usage[] =
0bc3cdfc JH	9	"git-send-pack [--all] [--exec=git-receive-pack] <remote> [<head>...]\n"
0bc3cdfc JH	10	" --all and explicit <head> specification are mutually exclusive.";
61221472	11	static const char *exec = "git-receive-pack";
41f93a2c	12	static int verbose = 0;
d089391c	13	static int send_all = 0;
2a9c3fe8	14	static int force_update = 0;
2245be3e	15	static int use_thin_pack = 0;
61221472	16
584c6cc9 LT	17	static int is_zero_sha1(const unsigned char *sha1)
	18	{
	19	int i;
	20
	21	for (i = 0; i < 20; i++) {
	22	if (*sha1++)
	23	return 0;
	24	}
	25	return 1;
	26	}
	27
94fdb7aa LT	28	static void exec_pack_objects(void)
	29	{
	30	static char *args[] = {
77cb17e9	31	"pack-objects",
94fdb7aa LT	32	"--stdout",
	33	NULL
	34	};
77cb17e9	35	execv_git_cmd(args);
94fdb7aa LT	36	die("git-pack-objects exec failed (%s)", strerror(errno));
	37	}
	38
	39	static void exec_rev_list(struct ref *refs)
	40	{
797656e5	41	struct ref *ref;
94fdb7aa	42	static char *args[1000];
797656e5	43	int i = 0, j;
94fdb7aa	44
77cb17e9	45	args[i++] = "rev-list"; /* 0 */
2245be3e JH	46	if (use_thin_pack) /* 1 */
	47	args[i++] = "--objects-edge";
	48	else
	49	args[i++] = "--objects";
797656e5 JH	50
	51	/* First send the ones we care about most */
	52	for (ref = refs; ref; ref = ref->next) {
	53	if (900 < i)
94fdb7aa	54	die("git-rev-list environment overflow");
797656e5 JH	55	if (!is_zero_sha1(ref->new_sha1)) {
797656e5 JH	56	char *buf = malloc(100);
584c6cc9	57	args[i++] = buf;
797656e5	58	snprintf(buf, 50, "%s", sha1_to_hex(ref->new_sha1));
584c6cc9	59	buf += 50;
797656e5 JH	60	if (!is_zero_sha1(ref->old_sha1) &&
	61	has_sha1_file(ref->old_sha1)) {
	62	args[i++] = buf;
	63	snprintf(buf, 50, "^%s",
	64	sha1_to_hex(ref->old_sha1));
	65	}
584c6cc9	66	}
797656e5 JH	67	}
	68
	69	/* Then a handful of the remainder
	70	* NEEDSWORK: we would be better off if used the newer ones first.
	71	*/
	72	for (ref = refs, j = i + 16;
	73	i < 900 && i < j && ref;
	74	ref = ref->next) {
	75	if (is_zero_sha1(ref->new_sha1) &&
	76	!is_zero_sha1(ref->old_sha1) &&
	77	has_sha1_file(ref->old_sha1)) {
	78	char *buf = malloc(42);
584c6cc9	79	args[i++] = buf;
797656e5	80	snprintf(buf, 42, "^%s", sha1_to_hex(ref->old_sha1));
584c6cc9	81	}
94fdb7aa LT	82	}
94fdb7aa LT	83	args[i] = NULL;
77cb17e9	84	execv_git_cmd(args);
94fdb7aa LT	85	die("git-rev-list exec failed (%s)", strerror(errno));
	86	}
	87
	88	static void rev_list(int fd, struct ref *refs)
	89	{
	90	int pipe_fd[2];
	91	pid_t pack_objects_pid;
	92
	93	if (pipe(pipe_fd) < 0)
	94	die("rev-list setup: pipe failed");
	95	pack_objects_pid = fork();
	96	if (!pack_objects_pid) {
	97	dup2(pipe_fd[0], 0);
	98	dup2(fd, 1);
	99	close(pipe_fd[0]);
	100	close(pipe_fd[1]);
	101	close(fd);
	102	exec_pack_objects();
	103	die("pack-objects setup failed");
	104	}
	105	if (pack_objects_pid < 0)
	106	die("pack-objects fork failed");
	107	dup2(pipe_fd[1], 1);
	108	close(pipe_fd[0]);
	109	close(pipe_fd[1]);
	110	close(fd);
	111	exec_rev_list(refs);
	112	}
	113
	114	static int pack_objects(int fd, struct ref *refs)
	115	{
	116	pid_t rev_list_pid;
	117
	118	rev_list_pid = fork();
	119	if (!rev_list_pid) {
	120	rev_list(fd, refs);
	121	die("rev-list setup failed");
	122	}
	123	if (rev_list_pid < 0)
	124	die("rev-list fork failed");
	125	/*
	126	* We don't wait for the rev-list pipeline in the parent:
	127	* we end up waiting for the other end instead
	128	*/
7ec4e608	129	return 0;
94fdb7aa	130	}
e4b5c7ff	131
51b0fca0 JH	132	static void unmark_and_free(struct commit_list *list, unsigned int mark)
	133	{
	134	while (list) {
	135	struct commit_list *temp = list;
	136	temp->item->object.flags &= ~mark;
	137	list = temp->next;
	138	free(temp);
	139	}
	140	}
	141
37fde874 JH	142	static int ref_newer(const unsigned char *new_sha1,
37fde874 JH	143	const unsigned char *old_sha1)
584c6cc9	144	{
37fde874 JH	145	struct object *o;
37fde874 JH	146	struct commit old, new;
51b0fca0 JH	147	struct commit_list list, used;
51b0fca0 JH	148	int found = 0;
2a9c3fe8	149
37fde874 JH	150	/* Both new and old must be commit-ish and new is descendant of
	151	* old. Otherwise we require --force.
	152	*/
9534f40b	153	o = deref_tag(parse_object(old_sha1), NULL, 0);
37fde874	154	if (!o \|\| o->type != commit_type)
584c6cc9	155	return 0;
37fde874 JH	156	old = (struct commit *) o;
37fde874 JH	157
9534f40b	158	o = deref_tag(parse_object(new_sha1), NULL, 0);
37fde874	159	if (!o \|\| o->type != commit_type)
2a9c3fe8	160	return 0;
37fde874 JH	161	new = (struct commit *) o;
37fde874 JH	162
2a9c3fe8 LT	163	if (parse_commit(new) < 0)
2a9c3fe8 LT	164	return 0;
51b0fca0 JH	165
51b0fca0 JH	166	used = list = NULL;
2a9c3fe8	167	commit_list_insert(new, &list);
bdf25142 LT	168	while (list) {
bdf25142 LT	169	new = pop_most_recent_commit(&list, 1);
51b0fca0 JH	170	commit_list_insert(new, &used);
	171	if (new == old) {
	172	found = 1;
	173	break;
	174	}
2a9c3fe8	175	}
51b0fca0 JH	176	unmark_and_free(list, 1);
	177	unmark_and_free(used, 1);
	178	return found;
584c6cc9 LT	179	}
584c6cc9 LT	180
f88395ac JH	181	static struct ref local_refs, *local_tail;
f88395ac JH	182	static struct ref remote_refs, *remote_tail;
584c6cc9	183
f88395ac	184	static int one_local_ref(const char refname, const unsigned char sha1)
584c6cc9 LT	185	{
584c6cc9 LT	186	struct ref *ref;
f88395ac JH	187	int len = strlen(refname) + 1;
f88395ac JH	188	ref = xcalloc(1, sizeof(*ref) + len);
584c6cc9 LT	189	memcpy(ref->new_sha1, sha1, 20);
584c6cc9 LT	190	memcpy(ref->name, refname, len);
f88395ac JH	191	*local_tail = ref;
f88395ac JH	192	local_tail = &ref->next;
584c6cc9 LT	193	return 0;
	194	}
	195
f88395ac JH	196	static void get_local_heads(void)
	197	{
	198	local_tail = &local_refs;
	199	for_each_ref(one_local_ref);
	200	}
	201
cfee10a7 JH	202	static int receive_status(int in)
	203	{
	204	char line[1000];
	205	int ret = 0;
	206	int len = packet_read_line(in, line, sizeof(line));
	207	if (len < 10 \|\| memcmp(line, "unpack ", 7)) {
	208	fprintf(stderr, "did not receive status back\n");
	209	return -1;
	210	}
	211	if (memcmp(line, "unpack ok\n", 10)) {
	212	fputs(line, stderr);
	213	ret = -1;
	214	}
	215	while (1) {
	216	len = packet_read_line(in, line, sizeof(line));
	217	if (!len)
	218	break;
	219	if (len < 3 \|\|
	220	(memcmp(line, "ok", 2) && memcmp(line, "ng", 2))) {
	221	fprintf(stderr, "protocol error: %s\n", line);
	222	ret = -1;
	223	break;
	224	}
	225	if (!memcmp(line, "ok", 2))
	226	continue;
	227	fputs(line, stderr);
	228	ret = -1;
	229	}
	230	return ret;
	231	}
	232
f88395ac	233	static int send_pack(int in, int out, int nr_refspec, char **refspec)
61221472	234	{
7f8e9828	235	struct ref *ref;
584c6cc9	236	int new_refs;
ed24928e	237	int ret = 0;
cfee10a7 JH	238	int ask_for_status_report = 0;
cfee10a7 JH	239	int expect_status_report = 0;
7f8e9828	240
f88395ac	241	/* No funny business with the matcher */
1a7141ff	242	remote_tail = get_remote_heads(in, &remote_refs, 0, NULL, 1);
f88395ac	243	get_local_heads();
584c6cc9	244
cfee10a7 JH	245	/* Does the other end support the reporting? */
	246	if (server_supports("report-status"))
	247	ask_for_status_report = 1;
	248
f88395ac JH	249	/* match them up */
	250	if (!remote_tail)
	251	remote_tail = &remote_refs;
	252	if (match_refs(local_refs, remote_refs, &remote_tail,
	253	nr_refspec, refspec, send_all))
	254	return -1;
4c353e89 DB	255
	256	if (!remote_refs) {
	257	fprintf(stderr, "No refs in common and none specified; doing nothing.\n");
	258	return 0;
	259	}
	260
584c6cc9	261	/*
f88395ac	262	* Finally, tell the other end!
584c6cc9	263	*/
f88395ac JH	264	new_refs = 0;
	265	for (ref = remote_refs; ref; ref = ref->next) {
	266	char old_hex[60], *new_hex;
	267	if (!ref->peer_ref)
7f8e9828	268	continue;
37fde874	269	if (!memcmp(ref->old_sha1, ref->peer_ref->new_sha1, 20)) {
41f93a2c LT	270	if (verbose)
41f93a2c LT	271	fprintf(stderr, "'%s': up-to-date\n", ref->name);
37fde874 JH	272	continue;
	273	}
	274
	275	/* This part determines what can overwrite what.
	276	* The rules are:
	277	*
ff27adf3 JH	278	* (0) you can always use --force or +A:B notation to
ff27adf3 JH	279	* selectively force individual ref pairs.
37fde874 JH	280	*
	281	* (1) if the old thing does not exist, it is OK.
	282	*
	283	* (2) if you do not have the old thing, you are not allowed
	284	* to overwrite it; you would not know what you are losing
	285	* otherwise.
	286	*
	287	* (3) if both new and old are commit-ish, and new is a
	288	* descendant of old, it is OK.
	289	*/
	290
ff27adf3 JH	291	if (!force_update &&
	292	!is_zero_sha1(ref->old_sha1) &&
	293	!ref->force) {
69310a34 JH	294	if (!has_sha1_file(ref->old_sha1) \|\|
69310a34 JH	295	!ref_newer(ref->peer_ref->new_sha1,
f88395ac	296	ref->old_sha1)) {
69310a34 JH	297	/* We do not have the remote ref, or
	298	* we know that the remote ref is not
	299	* an ancestor of what we are trying to
	300	* push. Either way this can be losing
	301	* commits at the remote end and likely
	302	* we were not up to date to begin with.
	303	*/
	304	error("remote '%s' is not a strict "
	305	"subset of local ref '%s'. "
	306	"maybe you are not up-to-date and "
	307	"need to pull first?",
	308	ref->name,
f88395ac	309	ref->peer_ref->name);
ed24928e	310	ret = -2;
f88395ac JH	311	continue;
f88395ac JH	312	}
e4b5c7ff	313	}
f88395ac JH	314	memcpy(ref->new_sha1, ref->peer_ref->new_sha1, 20);
	315	if (is_zero_sha1(ref->new_sha1)) {
	316	error("cannot happen anymore");
ed24928e	317	ret = -3;
584c6cc9 LT	318	continue;
584c6cc9 LT	319	}
584c6cc9	320	new_refs++;
7f8e9828 LT	321	strcpy(old_hex, sha1_to_hex(ref->old_sha1));
7f8e9828 LT	322	new_hex = sha1_to_hex(ref->new_sha1);
cfee10a7 JH	323
	324	if (ask_for_status_report) {
	325	packet_write(out, "%s %s %s%c%s",
	326	old_hex, new_hex, ref->name, 0,
	327	"report-status");
	328	ask_for_status_report = 0;
	329	expect_status_report = 1;
	330	}
	331	else
	332	packet_write(out, "%s %s %s",
	333	old_hex, new_hex, ref->name);
f88395ac JH	334	fprintf(stderr, "updating '%s'", ref->name);
	335	if (strcmp(ref->name, ref->peer_ref->name))
	336	fprintf(stderr, " using '%s'", ref->peer_ref->name);
	337	fprintf(stderr, "\n from %s\n to %s\n", old_hex, new_hex);
61221472	338	}
f88395ac	339
f3a3214e	340	packet_flush(out);
584c6cc9	341	if (new_refs)
f88395ac	342	pack_objects(out, remote_refs);
61221472	343	close(out);
cfee10a7 JH	344
	345	if (expect_status_report) {
	346	if (receive_status(in))
	347	ret = -4;
	348	}
	349
	350	if (!new_refs && ret == 0)
	351	fprintf(stderr, "Everything up-to-date\n");
ed24928e	352	return ret;
61221472 LT	353	}
61221472 LT	354
f88395ac	355
61221472 LT	356	int main(int argc, char **argv)
	357	{
	358	int i, nr_heads = 0;
	359	char *dest = NULL;
	360	char **heads = NULL;
7f8e9828 LT	361	int fd[2], ret;
7f8e9828 LT	362	pid_t pid;
61221472	363
5a327713	364	setup_git_directory();
61221472	365	argv++;
d089391c LT	366	for (i = 1; i < argc; i++, argv++) {
d089391c LT	367	char arg = argv;
61221472 LT	368
	369	if (*arg == '-') {
	370	if (!strncmp(arg, "--exec=", 7)) {
	371	exec = arg + 7;
	372	continue;
	373	}
d089391c LT	374	if (!strcmp(arg, "--all")) {
	375	send_all = 1;
	376	continue;
	377	}
2a9c3fe8 LT	378	if (!strcmp(arg, "--force")) {
	379	force_update = 1;
	380	continue;
	381	}
41f93a2c LT	382	if (!strcmp(arg, "--verbose")) {
	383	verbose = 1;
	384	continue;
	385	}
2245be3e JH	386	if (!strcmp(arg, "--thin")) {
	387	use_thin_pack = 1;
	388	continue;
	389	}
61221472 LT	390	usage(send_pack_usage);
61221472 LT	391	}
d089391c LT	392	if (!dest) {
	393	dest = arg;
	394	continue;
	395	}
61221472	396	heads = argv;
d089391c	397	nr_heads = argc - i;
61221472 LT	398	break;
	399	}
	400	if (!dest)
	401	usage(send_pack_usage);
0bc3cdfc JH	402	if (heads && send_all)
0bc3cdfc JH	403	usage(send_pack_usage);
f7192598	404	pid = git_connect(fd, dest, exec);
7f8e9828	405	if (pid < 0)
61221472	406	return 1;
d0efc8a7	407	ret = send_pack(fd[0], fd[1], nr_heads, heads);
7f8e9828 LT	408	close(fd[0]);
7f8e9828 LT	409	close(fd[1]);
f7192598	410	finish_connect(pid);
7f8e9828	411	return ret;
61221472	412	}