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

#include "builtin.h"
#include "commit.h"
#include "refs.h"
#include "pkt-line.h"
#include "sideband.h"
#include "run-command.h"
#include "remote.h"
#include "connect.h"
#include "send-pack.h"
#include "quote.h"
#include "transport.h"
#include "version.h"
#include "sha1-array.h"

static int feed_object(const unsigned char *sha1, int fd, int negative)
{
	char buf[42];

	if (negative && !has_sha1_file(sha1))
		return 1;

	memcpy(buf + negative, sha1_to_hex(sha1), 40);
	if (negative)
		buf[0] = '^';
	buf[40 + negative] = '\n';
	return write_or_whine(fd, buf, 41 + negative, "send-pack: send refs");
}

/*
 * Make a pack stream and spit it out into file descriptor fd
 */
static int pack_objects(int fd, struct ref *refs, struct sha1_array *extra, struct send_pack_args *args)
{
	/*
	 * The child becomes pack-objects --revs; we feed
	 * the revision parameters to it via its stdin and
	 * let its stdout go back to the other end.
	 */
	const char *argv[] = {
		"pack-objects",
		"--all-progress-implied",
		"--revs",
		"--stdout",
		NULL,
		NULL,
		NULL,
		NULL,
		NULL,
	};
	struct child_process po;
	int i;

	i = 4;
	if (args->use_thin_pack)
		argv[i++] = "--thin";
	if (args->use_ofs_delta)
		argv[i++] = "--delta-base-offset";
	if (args->quiet || !args->progress)
		argv[i++] = "-q";
	if (args->progress)
		argv[i++] = "--progress";
	memset(&po, 0, sizeof(po));
	po.argv = argv;
	po.in = -1;
	po.out = args->stateless_rpc ? -1 : fd;
	po.git_cmd = 1;
	if (start_command(&po))
		die_errno("git pack-objects failed");

	/*
	 * We feed the pack-objects we just spawned with revision
	 * parameters by writing to the pipe.
	 */
	for (i = 0; i < extra->nr; i++)
		if (!feed_object(extra->sha1[i], po.in, 1))
			break;

	while (refs) {
		if (!is_null_sha1(refs->old_sha1) &&
		    !feed_object(refs->old_sha1, po.in, 1))
			break;
		if (!is_null_sha1(refs->new_sha1) &&
		    !feed_object(refs->new_sha1, po.in, 0))
			break;
		refs = refs->next;
	}

	close(po.in);

	if (args->stateless_rpc) {
		char *buf = xmalloc(LARGE_PACKET_MAX);
		while (1) {
			ssize_t n = xread(po.out, buf, LARGE_PACKET_MAX);
			if (n <= 0)
				break;
			send_sideband(fd, -1, buf, n, LARGE_PACKET_MAX);
		}
		free(buf);
		close(po.out);
		po.out = -1;
	}

	if (finish_command(&po))
		return -1;
	return 0;
}

static int receive_status(int in, struct ref *refs)
{
	struct ref *hint;
	int ret = 0;
	char *line = packet_read_line(in, NULL);
	if (!starts_with(line, "unpack "))
		return error("did not receive remote status");
	if (strcmp(line, "unpack ok")) {
		error("unpack failed: %s", line + 7);
		ret = -1;
	}
	hint = NULL;
	while (1) {
		char *refname;
		char *msg;
		line = packet_read_line(in, NULL);
		if (!line)
			break;
		if (!starts_with(line, "ok ") && !starts_with(line, "ng ")) {
			error("invalid ref status from remote: %s", line);
			ret = -1;
			break;
		}

		refname = line + 3;
		msg = strchr(refname, ' ');
		if (msg)
			*msg++ = '\0';

		/* first try searching at our hint, falling back to all refs */
		if (hint)
			hint = find_ref_by_name(hint, refname);
		if (!hint)
			hint = find_ref_by_name(refs, refname);
		if (!hint) {
			warning("remote reported status on unknown ref: %s",
					refname);
			continue;
		}
		if (hint->status != REF_STATUS_EXPECTING_REPORT) {
			warning("remote reported status on unexpected ref: %s",
					refname);
			continue;
		}

		if (line[0] == 'o' && line[1] == 'k')
			hint->status = REF_STATUS_OK;
		else {
			hint->status = REF_STATUS_REMOTE_REJECT;
			ret = -1;
		}
		if (msg)
			hint->remote_status = xstrdup(msg);
		/* start our next search from the next ref */
		hint = hint->next;
	}
	return ret;
}

static int sideband_demux(int in, int out, void *data)
{
	int *fd = data, ret;
#ifdef NO_PTHREADS
	close(fd[1]);
#endif
	ret = recv_sideband("send-pack", fd[0], out);
	close(out);
	return ret;
}

static int advertise_shallow_grafts_cb(const struct commit_graft *graft, void *cb)
{
	struct strbuf *sb = cb;
	if (graft->nr_parent == -1)
		packet_buf_write(sb, "shallow %s\n", sha1_to_hex(graft->sha1));
	return 0;
}

static void advertise_shallow_grafts_buf(struct strbuf *sb)
{
	if (!is_repository_shallow())
		return;
	for_each_commit_graft(advertise_shallow_grafts_cb, sb);
}

static int ref_update_to_be_sent(const struct ref *ref, const struct send_pack_args *args)
{
	if (!ref->peer_ref && !args->send_mirror)
		return 0;

	/* Check for statuses set by set_ref_status_for_push() */
	switch (ref->status) {
	case REF_STATUS_REJECT_NONFASTFORWARD:
	case REF_STATUS_REJECT_ALREADY_EXISTS:
	case REF_STATUS_REJECT_FETCH_FIRST:
	case REF_STATUS_REJECT_NEEDS_FORCE:
	case REF_STATUS_REJECT_STALE:
	case REF_STATUS_REJECT_NODELETE:
	case REF_STATUS_UPTODATE:
		return 0;
	default:
		return 1;
	}
}

int send_pack(struct send_pack_args *args,
	      int fd[], struct child_process *conn,
	      struct ref *remote_refs,
	      struct sha1_array *extra_have)
{
	int in = fd[0];
	int out = fd[1];
	struct strbuf req_buf = STRBUF_INIT;
	struct strbuf cap_buf = STRBUF_INIT;
	struct ref *ref;
	int need_pack_data = 0;
	int allow_deleting_refs = 0;
	int status_report = 0;
	int use_sideband = 0;
	int quiet_supported = 0;
	int agent_supported = 0;
	unsigned cmds_sent = 0;
	int ret;
	struct async demux;

	/* Does the other end support the reporting? */
	if (server_supports("report-status"))
		status_report = 1;
	if (server_supports("delete-refs"))
		allow_deleting_refs = 1;
	if (server_supports("ofs-delta"))
		args->use_ofs_delta = 1;
	if (server_supports("side-band-64k"))
		use_sideband = 1;
	if (server_supports("quiet"))
		quiet_supported = 1;
	if (server_supports("agent"))
		agent_supported = 1;
	if (server_supports("no-thin"))
		args->use_thin_pack = 0;

	if (!remote_refs) {
		fprintf(stderr, "No refs in common and none specified; doing nothing.\n"
			"Perhaps you should specify a branch such as 'master'.\n");
		return 0;
	}

	if (status_report)
		strbuf_addstr(&cap_buf, " report-status");
	if (use_sideband)
		strbuf_addstr(&cap_buf, " side-band-64k");
	if (quiet_supported && (args->quiet || !args->progress))
		strbuf_addstr(&cap_buf, " quiet");
	if (agent_supported)
		strbuf_addf(&cap_buf, " agent=%s", git_user_agent_sanitized());

	/*
	 * NEEDSWORK: why does delete-refs have to be so specific to
	 * send-pack machinery that set_ref_status_for_push() cannot
	 * set this bit for us???
	 */
	for (ref = remote_refs; ref; ref = ref->next)
		if (ref->deletion && !allow_deleting_refs)
			ref->status = REF_STATUS_REJECT_NODELETE;

	if (!args->dry_run)
		advertise_shallow_grafts_buf(&req_buf);

	/*
	 * Clear the status for each ref and see if we need to send
	 * the pack data.
	 */
	for (ref = remote_refs; ref; ref = ref->next) {
		if (!ref_update_to_be_sent(ref, args))
			continue;

		if (!ref->deletion)
			need_pack_data = 1;

		if (args->dry_run || !status_report)
			ref->status = REF_STATUS_OK;
		else
			ref->status = REF_STATUS_EXPECTING_REPORT;
	}

	/*
	 * Finally, tell the other end!
	 */
	for (ref = remote_refs; ref; ref = ref->next) {
		char *old_hex, *new_hex;

		if (args->dry_run)
			continue;

		if (!ref_update_to_be_sent(ref, args))
			continue;

		old_hex = sha1_to_hex(ref->old_sha1);
		new_hex = sha1_to_hex(ref->new_sha1);
		if (!cmds_sent) {
			packet_buf_write(&req_buf,
					 "%s %s %s%c%s",
					 old_hex, new_hex, ref->name, 0,
					 cap_buf.buf);
			cmds_sent = 1;
		} else {
			packet_buf_write(&req_buf, "%s %s %s",
					 old_hex, new_hex, ref->name);
		}
	}

	if (args->stateless_rpc) {
		if (!args->dry_run && (cmds_sent || is_repository_shallow())) {
			packet_buf_flush(&req_buf);
			send_sideband(out, -1, req_buf.buf, req_buf.len, LARGE_PACKET_MAX);
		}
	} else {
		write_or_die(out, req_buf.buf, req_buf.len);
		packet_flush(out);
	}
	strbuf_release(&req_buf);
	strbuf_release(&cap_buf);

	if (use_sideband && cmds_sent) {
		memset(&demux, 0, sizeof(demux));
		demux.proc = sideband_demux;
		demux.data = fd;
		demux.out = -1;
		if (start_async(&demux))
			die("send-pack: unable to fork off sideband demultiplexer");
		in = demux.out;
	}

	if (need_pack_data && cmds_sent) {
		if (pack_objects(out, remote_refs, extra_have, args) < 0) {
			for (ref = remote_refs; ref; ref = ref->next)
				ref->status = REF_STATUS_NONE;
			if (args->stateless_rpc)
				close(out);
			if (git_connection_is_socket(conn))
				shutdown(fd[0], SHUT_WR);
			if (use_sideband)
				finish_async(&demux);
			fd[1] = -1;
			return -1;
		}
		if (!args->stateless_rpc)
			/* Closed by pack_objects() via start_command() */
			fd[1] = -1;
	}
	if (args->stateless_rpc && cmds_sent)
		packet_flush(out);

	if (status_report && cmds_sent)
		ret = receive_status(in, remote_refs);
	else
		ret = 0;
	if (args->stateless_rpc)
		packet_flush(out);

	if (use_sideband && cmds_sent) {
		if (finish_async(&demux)) {
			error("error in sideband demultiplexer");
			ret = -1;
		}
		close(demux.out);
	}

	if (ret < 0)
		return ret;

	if (args->porcelain)
		return 0;

	for (ref = remote_refs; ref; ref = ref->next) {
		switch (ref->status) {
		case REF_STATUS_NONE:
		case REF_STATUS_UPTODATE:
		case REF_STATUS_OK:
			break;
		default:
			return -1;
		}
	}
	return 0;
}
Commit	Line	Data
f5d942e1 NTND	1	#include "builtin.h"
	2	#include "commit.h"
	3	#include "refs.h"
	4	#include "pkt-line.h"
	5	#include "sideband.h"
	6	#include "run-command.h"
	7	#include "remote.h"
47a59185	8	#include "connect.h"
f5d942e1 NTND	9	#include "send-pack.h"
	10	#include "quote.h"
	11	#include "transport.h"
	12	#include "version.h"
13eb4626	13	#include "sha1-array.h"
f5d942e1 NTND	14
	15	static int feed_object(const unsigned char *sha1, int fd, int negative)
	16	{
	17	char buf[42];
	18
	19	if (negative && !has_sha1_file(sha1))
	20	return 1;
	21
	22	memcpy(buf + negative, sha1_to_hex(sha1), 40);
	23	if (negative)
	24	buf[0] = '^';
	25	buf[40 + negative] = '\n';
	26	return write_or_whine(fd, buf, 41 + negative, "send-pack: send refs");
	27	}
	28
	29	/*
	30	* Make a pack stream and spit it out into file descriptor fd
	31	*/
13eb4626	32	static int pack_objects(int fd, struct ref refs, struct sha1_array extra, struct send_pack_args *args)
f5d942e1 NTND	33	{
	34	/*
	35	* The child becomes pack-objects --revs; we feed
	36	* the revision parameters to it via its stdin and
	37	* let its stdout go back to the other end.
	38	*/
	39	const char *argv[] = {
	40	"pack-objects",
	41	"--all-progress-implied",
	42	"--revs",
	43	"--stdout",
	44	NULL,
	45	NULL,
	46	NULL,
	47	NULL,
	48	NULL,
	49	};
	50	struct child_process po;
	51	int i;
	52
	53	i = 4;
	54	if (args->use_thin_pack)
	55	argv[i++] = "--thin";
	56	if (args->use_ofs_delta)
	57	argv[i++] = "--delta-base-offset";
	58	if (args->quiet \|\| !args->progress)
	59	argv[i++] = "-q";
	60	if (args->progress)
	61	argv[i++] = "--progress";
	62	memset(&po, 0, sizeof(po));
	63	po.argv = argv;
	64	po.in = -1;
	65	po.out = args->stateless_rpc ? -1 : fd;
	66	po.git_cmd = 1;
	67	if (start_command(&po))
	68	die_errno("git pack-objects failed");
	69
	70	/*
	71	* We feed the pack-objects we just spawned with revision
	72	* parameters by writing to the pipe.
	73	*/
	74	for (i = 0; i < extra->nr; i++)
13eb4626	75	if (!feed_object(extra->sha1[i], po.in, 1))
f5d942e1 NTND	76	break;
	77
	78	while (refs) {
	79	if (!is_null_sha1(refs->old_sha1) &&
	80	!feed_object(refs->old_sha1, po.in, 1))
	81	break;
	82	if (!is_null_sha1(refs->new_sha1) &&
	83	!feed_object(refs->new_sha1, po.in, 0))
	84	break;
	85	refs = refs->next;
	86	}
	87
	88	close(po.in);
	89
	90	if (args->stateless_rpc) {
	91	char *buf = xmalloc(LARGE_PACKET_MAX);
	92	while (1) {
	93	ssize_t n = xread(po.out, buf, LARGE_PACKET_MAX);
	94	if (n <= 0)
	95	break;
	96	send_sideband(fd, -1, buf, n, LARGE_PACKET_MAX);
	97	}
	98	free(buf);
	99	close(po.out);
	100	po.out = -1;
	101	}
	102
	103	if (finish_command(&po))
	104	return -1;
	105	return 0;
	106	}
	107
	108	static int receive_status(int in, struct ref *refs)
	109	{
	110	struct ref *hint;
f5d942e1	111	int ret = 0;
74543a04	112	char *line = packet_read_line(in, NULL);
59556548	113	if (!starts_with(line, "unpack "))
f5d942e1	114	return error("did not receive remote status");
819b929d	115	if (strcmp(line, "unpack ok")) {
f5d942e1 NTND	116	error("unpack failed: %s", line + 7);
	117	ret = -1;
	118	}
	119	hint = NULL;
	120	while (1) {
	121	char *refname;
	122	char *msg;
74543a04 JK	123	line = packet_read_line(in, NULL);
74543a04 JK	124	if (!line)
f5d942e1	125	break;
59556548	126	if (!starts_with(line, "ok ") && !starts_with(line, "ng ")) {
8f9e3e49	127	error("invalid ref status from remote: %s", line);
f5d942e1 NTND	128	ret = -1;
	129	break;
	130	}
	131
f5d942e1 NTND	132	refname = line + 3;
	133	msg = strchr(refname, ' ');
	134	if (msg)
	135	*msg++ = '\0';
	136
	137	/* first try searching at our hint, falling back to all refs */
	138	if (hint)
	139	hint = find_ref_by_name(hint, refname);
	140	if (!hint)
	141	hint = find_ref_by_name(refs, refname);
	142	if (!hint) {
	143	warning("remote reported status on unknown ref: %s",
	144	refname);
	145	continue;
	146	}
	147	if (hint->status != REF_STATUS_EXPECTING_REPORT) {
	148	warning("remote reported status on unexpected ref: %s",
	149	refname);
	150	continue;
	151	}
	152
	153	if (line[0] == 'o' && line[1] == 'k')
	154	hint->status = REF_STATUS_OK;
	155	else {
	156	hint->status = REF_STATUS_REMOTE_REJECT;
	157	ret = -1;
	158	}
	159	if (msg)
	160	hint->remote_status = xstrdup(msg);
	161	/* start our next search from the next ref */
	162	hint = hint->next;
	163	}
	164	return ret;
	165	}
	166
	167	static int sideband_demux(int in, int out, void *data)
	168	{
	169	int *fd = data, ret;
	170	#ifdef NO_PTHREADS
	171	close(fd[1]);
	172	#endif
	173	ret = recv_sideband("send-pack", fd[0], out);
	174	close(out);
	175	return ret;
	176	}
	177
f2c681cf NTND	178	static int advertise_shallow_grafts_cb(const struct commit_graft graft, void cb)
	179	{
	180	struct strbuf *sb = cb;
	181	if (graft->nr_parent == -1)
	182	packet_buf_write(sb, "shallow %s\n", sha1_to_hex(graft->sha1));
	183	return 0;
	184	}
	185
16a2743c	186	static void advertise_shallow_grafts_buf(struct strbuf *sb)
f2c681cf NTND	187	{
	188	if (!is_repository_shallow())
	189	return;
	190	for_each_commit_graft(advertise_shallow_grafts_cb, sb);
	191	}
	192
e40671a3 JH	193	static int ref_update_to_be_sent(const struct ref ref, const struct send_pack_args args)
	194	{
	195	if (!ref->peer_ref && !args->send_mirror)
	196	return 0;
	197
	198	/* Check for statuses set by set_ref_status_for_push() */
	199	switch (ref->status) {
	200	case REF_STATUS_REJECT_NONFASTFORWARD:
	201	case REF_STATUS_REJECT_ALREADY_EXISTS:
	202	case REF_STATUS_REJECT_FETCH_FIRST:
	203	case REF_STATUS_REJECT_NEEDS_FORCE:
	204	case REF_STATUS_REJECT_STALE:
	205	case REF_STATUS_REJECT_NODELETE:
	206	case REF_STATUS_UPTODATE:
	207	return 0;
	208	default:
	209	return 1;
	210	}
	211	}
	212
f5d942e1 NTND	213	int send_pack(struct send_pack_args *args,
	214	int fd[], struct child_process *conn,
	215	struct ref *remote_refs,
13eb4626	216	struct sha1_array *extra_have)
f5d942e1 NTND	217	{
	218	int in = fd[0];
	219	int out = fd[1];
	220	struct strbuf req_buf = STRBUF_INIT;
887f3533	221	struct strbuf cap_buf = STRBUF_INIT;
f5d942e1	222	struct ref *ref;
ab2b0c90	223	int need_pack_data = 0;
f5d942e1 NTND	224	int allow_deleting_refs = 0;
	225	int status_report = 0;
	226	int use_sideband = 0;
	227	int quiet_supported = 0;
	228	int agent_supported = 0;
	229	unsigned cmds_sent = 0;
	230	int ret;
	231	struct async demux;
	232
	233	/* Does the other end support the reporting? */
	234	if (server_supports("report-status"))
	235	status_report = 1;
	236	if (server_supports("delete-refs"))
	237	allow_deleting_refs = 1;
	238	if (server_supports("ofs-delta"))
	239	args->use_ofs_delta = 1;
	240	if (server_supports("side-band-64k"))
	241	use_sideband = 1;
	242	if (server_supports("quiet"))
	243	quiet_supported = 1;
	244	if (server_supports("agent"))
	245	agent_supported = 1;
1ba98a79 CMN	246	if (server_supports("no-thin"))
1ba98a79 CMN	247	args->use_thin_pack = 0;
f5d942e1 NTND	248
	249	if (!remote_refs) {
	250	fprintf(stderr, "No refs in common and none specified; doing nothing.\n"
	251	"Perhaps you should specify a branch such as 'master'.\n");
	252	return 0;
	253	}
	254
887f3533 JH	255	if (status_report)
	256	strbuf_addstr(&cap_buf, " report-status");
	257	if (use_sideband)
	258	strbuf_addstr(&cap_buf, " side-band-64k");
	259	if (quiet_supported && (args->quiet \|\| !args->progress))
	260	strbuf_addstr(&cap_buf, " quiet");
	261	if (agent_supported)
	262	strbuf_addf(&cap_buf, " agent=%s", git_user_agent_sanitized());
	263
621b0599 JH	264	/*
	265	* NEEDSWORK: why does delete-refs have to be so specific to
	266	* send-pack machinery that set_ref_status_for_push() cannot
	267	* set this bit for us???
	268	*/
	269	for (ref = remote_refs; ref; ref = ref->next)
	270	if (ref->deletion && !allow_deleting_refs)
	271	ref->status = REF_STATUS_REJECT_NODELETE;
	272
5dbd7676	273	if (!args->dry_run)
f2c681cf	274	advertise_shallow_grafts_buf(&req_buf);
5dbd7676	275
f5d942e1	276	/*
b783aa71 JH	277	* Clear the status for each ref and see if we need to send
b783aa71 JH	278	* the pack data.
f5d942e1	279	*/
f5d942e1	280	for (ref = remote_refs; ref; ref = ref->next) {
e40671a3	281	if (!ref_update_to_be_sent(ref, args))
f5d942e1 NTND	282	continue;
f5d942e1 NTND	283
f5d942e1	284	if (!ref->deletion)
ab2b0c90	285	need_pack_data = 1;
f5d942e1	286
b783aa71	287	if (args->dry_run \|\| !status_report)
f5d942e1	288	ref->status = REF_STATUS_OK;
b783aa71 JH	289	else
	290	ref->status = REF_STATUS_EXPECTING_REPORT;
	291	}
	292
	293	/*
	294	* Finally, tell the other end!
	295	*/
	296	for (ref = remote_refs; ref; ref = ref->next) {
	297	char old_hex, new_hex;
	298
	299	if (args->dry_run)
	300	continue;
	301
	302	if (!ref_update_to_be_sent(ref, args))
	303	continue;
	304
	305	old_hex = sha1_to_hex(ref->old_sha1);
	306	new_hex = sha1_to_hex(ref->new_sha1);
c67072b9	307	if (!cmds_sent) {
b783aa71 JH	308	packet_buf_write(&req_buf,
	309	"%s %s %s%c%s",
	310	old_hex, new_hex, ref->name, 0,
	311	cap_buf.buf);
c67072b9 JH	312	cmds_sent = 1;
c67072b9 JH	313	} else {
b783aa71 JH	314	packet_buf_write(&req_buf, "%s %s %s",
b783aa71 JH	315	old_hex, new_hex, ref->name);
c67072b9	316	}
f5d942e1 NTND	317	}
	318
	319	if (args->stateless_rpc) {
f2c681cf	320	if (!args->dry_run && (cmds_sent \|\| is_repository_shallow())) {
f5d942e1 NTND	321	packet_buf_flush(&req_buf);
	322	send_sideband(out, -1, req_buf.buf, req_buf.len, LARGE_PACKET_MAX);
	323	}
	324	} else {
cdf4fb8e	325	write_or_die(out, req_buf.buf, req_buf.len);
f5d942e1 NTND	326	packet_flush(out);
	327	}
	328	strbuf_release(&req_buf);
887f3533	329	strbuf_release(&cap_buf);
f5d942e1 NTND	330
	331	if (use_sideband && cmds_sent) {
	332	memset(&demux, 0, sizeof(demux));
	333	demux.proc = sideband_demux;
	334	demux.data = fd;
	335	demux.out = -1;
	336	if (start_async(&demux))
	337	die("send-pack: unable to fork off sideband demultiplexer");
	338	in = demux.out;
	339	}
	340
ab2b0c90	341	if (need_pack_data && cmds_sent) {
f5d942e1 NTND	342	if (pack_objects(out, remote_refs, extra_have, args) < 0) {
	343	for (ref = remote_refs; ref; ref = ref->next)
	344	ref->status = REF_STATUS_NONE;
	345	if (args->stateless_rpc)
	346	close(out);
	347	if (git_connection_is_socket(conn))
	348	shutdown(fd[0], SHUT_WR);
	349	if (use_sideband)
	350	finish_async(&demux);
37cb1dd6	351	fd[1] = -1;
f5d942e1 NTND	352	return -1;
f5d942e1 NTND	353	}
37cb1dd6 JL	354	if (!args->stateless_rpc)
	355	/* Closed by pack_objects() via start_command() */
	356	fd[1] = -1;
f5d942e1 NTND	357	}
	358	if (args->stateless_rpc && cmds_sent)
	359	packet_flush(out);
	360
	361	if (status_report && cmds_sent)
	362	ret = receive_status(in, remote_refs);
	363	else
	364	ret = 0;
	365	if (args->stateless_rpc)
	366	packet_flush(out);
	367
	368	if (use_sideband && cmds_sent) {
	369	if (finish_async(&demux)) {
	370	error("error in sideband demultiplexer");
	371	ret = -1;
	372	}
	373	close(demux.out);
	374	}
	375
	376	if (ret < 0)
	377	return ret;
	378
	379	if (args->porcelain)
	380	return 0;
	381
	382	for (ref = remote_refs; ref; ref = ref->next) {
	383	switch (ref->status) {
	384	case REF_STATUS_NONE:
	385	case REF_STATUS_UPTODATE:
	386	case REF_STATUS_OK:
	387	break;
	388	default:
	389	return -1;
	390	}
	391	}
	392	return 0;
	393	}