[thirdparty/git.git] / builtin / gc.c

/*
 * git gc builtin command
 *
 * Cleanup unreachable files and optimize the repository.
 *
 * Copyright (c) 2007 James Bowes
 *
 * Based on git-gc.sh, which is
 *
 * Copyright (c) 2006 Shawn O. Pearce
 */

#include "builtin.h"
#include "lockfile.h"
#include "parse-options.h"
#include "run-command.h"
#include "sigchain.h"
#include "argv-array.h"
#include "commit.h"

#define FAILED_RUN "failed to run %s"

static const char * const builtin_gc_usage[] = {
	N_("git gc [<options>]"),
	NULL
};

static int pack_refs = 1;
static int prune_reflogs = 1;
static int aggressive_depth = 250;
static int aggressive_window = 250;
static int gc_auto_threshold = 6700;
static int gc_auto_pack_limit = 50;
static int detach_auto = 1;
static const char *prune_expire = "2.weeks.ago";

static struct argv_array pack_refs_cmd = ARGV_ARRAY_INIT;
static struct argv_array reflog = ARGV_ARRAY_INIT;
static struct argv_array repack = ARGV_ARRAY_INIT;
static struct argv_array prune = ARGV_ARRAY_INIT;
static struct argv_array rerere = ARGV_ARRAY_INIT;

static char *pidfile;

static void remove_pidfile(void)
{
	if (pidfile)
		unlink(pidfile);
}

static void remove_pidfile_on_signal(int signo)
{
	remove_pidfile();
	sigchain_pop(signo);
	raise(signo);
}

static void gc_config(void)
{
	const char *value;

	if (!git_config_get_value("gc.packrefs", &value)) {
		if (value && !strcmp(value, "notbare"))
			pack_refs = -1;
		else
			pack_refs = git_config_bool("gc.packrefs", value);
	}

	git_config_get_int("gc.aggressivewindow", &aggressive_window);
	git_config_get_int("gc.aggressivedepth", &aggressive_depth);
	git_config_get_int("gc.auto", &gc_auto_threshold);
	git_config_get_int("gc.autopacklimit", &gc_auto_pack_limit);
	git_config_get_bool("gc.autodetach", &detach_auto);

	if (!git_config_get_string_const("gc.pruneexpire", &prune_expire)) {
		if (strcmp(prune_expire, "now")) {
			unsigned long now = approxidate("now");
			if (approxidate(prune_expire) >= now) {
				git_die_config("gc.pruneexpire", _("Invalid gc.pruneexpire: '%s'"),
						prune_expire);
			}
		}
	}
	git_config(git_default_config, NULL);
}

static int too_many_loose_objects(void)
{
	/*
	 * Quickly check if a "gc" is needed, by estimating how
	 * many loose objects there are.  Because SHA-1 is evenly
	 * distributed, we can check only one and get a reasonable
	 * estimate.
	 */
	char path[PATH_MAX];
	const char *objdir = get_object_directory();
	DIR *dir;
	struct dirent *ent;
	int auto_threshold;
	int num_loose = 0;
	int needed = 0;

	if (gc_auto_threshold <= 0)
		return 0;

	if (sizeof(path) <= snprintf(path, sizeof(path), "%s/17", objdir)) {
		warning(_("insanely long object directory %.*s"), 50, objdir);
		return 0;
	}
	dir = opendir(path);
	if (!dir)
		return 0;

	auto_threshold = (gc_auto_threshold + 255) / 256;
	while ((ent = readdir(dir)) != NULL) {
		if (strspn(ent->d_name, "0123456789abcdef") != 38 ||
		    ent->d_name[38] != '\0')
			continue;
		if (++num_loose > auto_threshold) {
			needed = 1;
			break;
		}
	}
	closedir(dir);
	return needed;
}

static int too_many_packs(void)
{
	struct packed_git *p;
	int cnt;

	if (gc_auto_pack_limit <= 0)
		return 0;

	prepare_packed_git();
	for (cnt = 0, p = packed_git; p; p = p->next) {
		if (!p->pack_local)
			continue;
		if (p->pack_keep)
			continue;
		/*
		 * Perhaps check the size of the pack and count only
		 * very small ones here?
		 */
		cnt++;
	}
	return gc_auto_pack_limit <= cnt;
}

static void add_repack_all_option(void)
{
	if (prune_expire && !strcmp(prune_expire, "now"))
		argv_array_push(&repack, "-a");
	else {
		argv_array_push(&repack, "-A");
		if (prune_expire)
			argv_array_pushf(&repack, "--unpack-unreachable=%s", prune_expire);
	}
}

static int need_to_gc(void)
{
	/*
	 * Setting gc.auto to 0 or negative can disable the
	 * automatic gc.
	 */
	if (gc_auto_threshold <= 0)
		return 0;

	/*
	 * If there are too many loose objects, but not too many
	 * packs, we run "repack -d -l".  If there are too many packs,
	 * we run "repack -A -d -l".  Otherwise we tell the caller
	 * there is no need.
	 */
	if (too_many_packs())
		add_repack_all_option();
	else if (!too_many_loose_objects())
		return 0;

	if (run_hook_le(NULL, "pre-auto-gc", NULL))
		return 0;
	return 1;
}

/* return NULL on success, else hostname running the gc */
static const char *lock_repo_for_gc(int force, pid_t* ret_pid)
{
	static struct lock_file lock;
	char my_host[128];
	struct strbuf sb = STRBUF_INIT;
	struct stat st;
	uintmax_t pid;
	FILE *fp;
	int fd;

	if (pidfile)
		/* already locked */
		return NULL;

	if (gethostname(my_host, sizeof(my_host)))
		strcpy(my_host, "unknown");

	fd = hold_lock_file_for_update(&lock, git_path("gc.pid"),
				       LOCK_DIE_ON_ERROR);
	if (!force) {
		static char locking_host[128];
		int should_exit;
		fp = fopen(git_path("gc.pid"), "r");
		memset(locking_host, 0, sizeof(locking_host));
		should_exit =
			fp != NULL &&
			!fstat(fileno(fp), &st) &&
			/*
			 * 12 hour limit is very generous as gc should
			 * never take that long. On the other hand we
			 * don't really need a strict limit here,
			 * running gc --auto one day late is not a big
			 * problem. --force can be used in manual gc
			 * after the user verifies that no gc is
			 * running.
			 */
			time(NULL) - st.st_mtime <= 12 * 3600 &&
			fscanf(fp, "%"PRIuMAX" %127c", &pid, locking_host) == 2 &&
			/* be gentle to concurrent "gc" on remote hosts */
			(strcmp(locking_host, my_host) || !kill(pid, 0) || errno == EPERM);
		if (fp != NULL)
			fclose(fp);
		if (should_exit) {
			if (fd >= 0)
				rollback_lock_file(&lock);
			*ret_pid = pid;
			return locking_host;
		}
	}

	strbuf_addf(&sb, "%"PRIuMAX" %s",
		    (uintmax_t) getpid(), my_host);
	write_in_full(fd, sb.buf, sb.len);
	strbuf_release(&sb);
	commit_lock_file(&lock);

	pidfile = git_pathdup("gc.pid");
	sigchain_push_common(remove_pidfile_on_signal);
	atexit(remove_pidfile);

	return NULL;
}

static int gc_before_repack(void)
{
	if (pack_refs && run_command_v_opt(pack_refs_cmd.argv, RUN_GIT_CMD))
		return error(FAILED_RUN, pack_refs_cmd.argv[0]);

	if (prune_reflogs && run_command_v_opt(reflog.argv, RUN_GIT_CMD))
		return error(FAILED_RUN, reflog.argv[0]);

	pack_refs = 0;
	prune_reflogs = 0;
	return 0;
}

int cmd_gc(int argc, const char **argv, const char *prefix)
{
	int aggressive = 0;
	int auto_gc = 0;
	int quiet = 0;
	int force = 0;
	const char *name;
	pid_t pid;

	struct option builtin_gc_options[] = {
		OPT__QUIET(&quiet, N_("suppress progress reporting")),
		{ OPTION_STRING, 0, "prune", &prune_expire, N_("date"),
			N_("prune unreferenced objects"),
			PARSE_OPT_OPTARG, NULL, (intptr_t)prune_expire },
		OPT_BOOL(0, "aggressive", &aggressive, N_("be more thorough (increased runtime)")),
		OPT_BOOL(0, "auto", &auto_gc, N_("enable auto-gc mode")),
		OPT_BOOL(0, "force", &force, N_("force running gc even if there may be another gc running")),
		OPT_END()
	};

	if (argc == 2 && !strcmp(argv[1], "-h"))
		usage_with_options(builtin_gc_usage, builtin_gc_options);

	argv_array_pushl(&pack_refs_cmd, "pack-refs", "--all", "--prune", NULL);
	argv_array_pushl(&reflog, "reflog", "expire", "--all", NULL);
	argv_array_pushl(&repack, "repack", "-d", "-l", NULL);
	argv_array_pushl(&prune, "prune", "--expire", NULL );
	argv_array_pushl(&rerere, "rerere", "gc", NULL);

	gc_config();

	if (pack_refs < 0)
		pack_refs = !is_bare_repository();

	argc = parse_options(argc, argv, prefix, builtin_gc_options,
			     builtin_gc_usage, 0);
	if (argc > 0)
		usage_with_options(builtin_gc_usage, builtin_gc_options);

	if (aggressive) {
		argv_array_push(&repack, "-f");
		if (aggressive_depth > 0)
			argv_array_pushf(&repack, "--depth=%d", aggressive_depth);
		if (aggressive_window > 0)
			argv_array_pushf(&repack, "--window=%d", aggressive_window);
	}
	if (quiet)
		argv_array_push(&repack, "-q");

	if (auto_gc) {
		/*
		 * Auto-gc should be least intrusive as possible.
		 */
		if (!need_to_gc())
			return 0;
		if (!quiet) {
			if (detach_auto)
				fprintf(stderr, _("Auto packing the repository in background for optimum performance.\n"));
			else
				fprintf(stderr, _("Auto packing the repository for optimum performance.\n"));
			fprintf(stderr, _("See \"git help gc\" for manual housekeeping.\n"));
		}
		if (detach_auto) {
			if (gc_before_repack())
				return -1;
			/*
			 * failure to daemonize is ok, we'll continue
			 * in foreground
			 */
			daemonize();
		}
	} else
		add_repack_all_option();

	name = lock_repo_for_gc(force, &pid);
	if (name) {
		if (auto_gc)
			return 0; /* be quiet on --auto */
		die(_("gc is already running on machine '%s' pid %"PRIuMAX" (use --force if not)"),
		    name, (uintmax_t)pid);
	}

	if (gc_before_repack())
		return -1;

	if (run_command_v_opt(repack.argv, RUN_GIT_CMD))
		return error(FAILED_RUN, repack.argv[0]);

	if (prune_expire) {
		argv_array_push(&prune, prune_expire);
		if (quiet)
			argv_array_push(&prune, "--no-progress");
		if (run_command_v_opt(prune.argv, RUN_GIT_CMD))
			return error(FAILED_RUN, prune.argv[0]);
	}

	if (run_command_v_opt(rerere.argv, RUN_GIT_CMD))
		return error(FAILED_RUN, rerere.argv[0]);

	if (auto_gc && too_many_loose_objects())
		warning(_("There are too many unreachable loose objects; "
			"run 'git prune' to remove them."));

	return 0;
}
Commit	Line	Data
6757ada4 JB	1	/*
	2	* git gc builtin command
	3	*
	4	* Cleanup unreachable files and optimize the repository.
	5	*
	6	* Copyright (c) 2007 James Bowes
	7	*
	8	* Based on git-gc.sh, which is
	9	*
	10	* Copyright (c) 2006 Shawn O. Pearce
	11	*/
	12
baffc0e7	13	#include "builtin.h"
697cc8ef	14	#include "lockfile.h"
44c637c8	15	#include "parse-options.h"
6757ada4	16	#include "run-command.h"
4c5baf02	17	#include "sigchain.h"
234587fc	18	#include "argv-array.h"
eab3296c	19	#include "commit.h"
6757ada4 JB	20
	21	#define FAILED_RUN "failed to run %s"
	22
44c637c8	23	static const char * const builtin_gc_usage[] = {
9c9b4f2f	24	N_("git gc [<options>]"),
44c637c8 JB	25	NULL
44c637c8 JB	26	};
6757ada4	27
56752391	28	static int pack_refs = 1;
62aad184	29	static int prune_reflogs = 1;
125f8146	30	static int aggressive_depth = 250;
1c192f34	31	static int aggressive_window = 250;
2c3c4399	32	static int gc_auto_threshold = 6700;
97063974	33	static int gc_auto_pack_limit = 50;
9f673f94	34	static int detach_auto = 1;
d3154b44	35	static const char *prune_expire = "2.weeks.ago";
6757ada4	36
234587fc JK	37	static struct argv_array pack_refs_cmd = ARGV_ARRAY_INIT;
	38	static struct argv_array reflog = ARGV_ARRAY_INIT;
	39	static struct argv_array repack = ARGV_ARRAY_INIT;
	40	static struct argv_array prune = ARGV_ARRAY_INIT;
	41	static struct argv_array rerere = ARGV_ARRAY_INIT;
6757ada4	42
4c5baf02 JN	43	static char *pidfile;
	44
	45	static void remove_pidfile(void)
	46	{
	47	if (pidfile)
	48	unlink(pidfile);
	49	}
	50
	51	static void remove_pidfile_on_signal(int signo)
	52	{
	53	remove_pidfile();
	54	sigchain_pop(signo);
	55	raise(signo);
	56	}
	57
5801d3b4	58	static void gc_config(void)
6757ada4	59	{
5801d3b4 TA	60	const char *value;
	61
	62	if (!git_config_get_value("gc.packrefs", &value)) {
c5e5a2c0	63	if (value && !strcmp(value, "notbare"))
6757ada4 JB	64	pack_refs = -1;
6757ada4 JB	65	else
5801d3b4	66	pack_refs = git_config_bool("gc.packrefs", value);
17815501	67	}
5801d3b4 TA	68
	69	git_config_get_int("gc.aggressivewindow", &aggressive_window);
	70	git_config_get_int("gc.aggressivedepth", &aggressive_depth);
	71	git_config_get_int("gc.auto", &gc_auto_threshold);
	72	git_config_get_int("gc.autopacklimit", &gc_auto_pack_limit);
	73	git_config_get_bool("gc.autodetach", &detach_auto);
	74
	75	if (!git_config_get_string_const("gc.pruneexpire", &prune_expire)) {
	76	if (strcmp(prune_expire, "now")) {
25ee9731	77	unsigned long now = approxidate("now");
5801d3b4 TA	78	if (approxidate(prune_expire) >= now) {
	79	git_die_config("gc.pruneexpire", _("Invalid gc.pruneexpire: '%s'"),
	80	prune_expire);
	81	}
25ee9731	82	}
25ee9731	83	}
5801d3b4	84	git_config(git_default_config, NULL);
6757ada4 JB	85	}
6757ada4 JB	86
a087cc98	87	static int too_many_loose_objects(void)
2c3c4399 JH	88	{
	89	/*
	90	* Quickly check if a "gc" is needed, by estimating how
	91	* many loose objects there are. Because SHA-1 is evenly
	92	* distributed, we can check only one and get a reasonable
	93	* estimate.
	94	*/
	95	char path[PATH_MAX];
	96	const char *objdir = get_object_directory();
	97	DIR *dir;
	98	struct dirent *ent;
	99	int auto_threshold;
	100	int num_loose = 0;
	101	int needed = 0;
	102
17815501 JH	103	if (gc_auto_threshold <= 0)
	104	return 0;
	105
2c3c4399	106	if (sizeof(path) <= snprintf(path, sizeof(path), "%s/17", objdir)) {
fea6128b	107	warning(_("insanely long object directory %.*s"), 50, objdir);
2c3c4399 JH	108	return 0;
	109	}
	110	dir = opendir(path);
	111	if (!dir)
	112	return 0;
	113
	114	auto_threshold = (gc_auto_threshold + 255) / 256;
	115	while ((ent = readdir(dir)) != NULL) {
	116	if (strspn(ent->d_name, "0123456789abcdef") != 38 \|\|
	117	ent->d_name[38] != '\0')
	118	continue;
	119	if (++num_loose > auto_threshold) {
	120	needed = 1;
	121	break;
	122	}
	123	}
	124	closedir(dir);
	125	return needed;
	126	}
	127
17815501 JH	128	static int too_many_packs(void)
	129	{
	130	struct packed_git *p;
	131	int cnt;
	132
	133	if (gc_auto_pack_limit <= 0)
	134	return 0;
	135
	136	prepare_packed_git();
	137	for (cnt = 0, p = packed_git; p; p = p->next) {
17815501 JH	138	if (!p->pack_local)
17815501 JH	139	continue;
01af249f	140	if (p->pack_keep)
17815501 JH	141	continue;
	142	/*
	143	* Perhaps check the size of the pack and count only
	144	* very small ones here?
	145	*/
	146	cnt++;
	147	}
	148	return gc_auto_pack_limit <= cnt;
	149	}
	150
7e52f566 JK	151	static void add_repack_all_option(void)
	152	{
	153	if (prune_expire && !strcmp(prune_expire, "now"))
234587fc	154	argv_array_push(&repack, "-a");
7e52f566	155	else {
234587fc JK	156	argv_array_push(&repack, "-A");
	157	if (prune_expire)
	158	argv_array_pushf(&repack, "--unpack-unreachable=%s", prune_expire);
7e52f566 JK	159	}
	160	}
	161
a087cc98 JH	162	static int need_to_gc(void)
	163	{
	164	/*
b14d255b BC	165	* Setting gc.auto to 0 or negative can disable the
b14d255b BC	166	* automatic gc.
a087cc98	167	*/
b14d255b	168	if (gc_auto_threshold <= 0)
95143f9e JH	169	return 0;
95143f9e JH	170
17815501 JH	171	/*
	172	* If there are too many loose objects, but not too many
	173	* packs, we run "repack -d -l". If there are too many packs,
	174	* we run "repack -A -d -l". Otherwise we tell the caller
	175	* there is no need.
	176	*/
17815501	177	if (too_many_packs())
7e52f566	178	add_repack_all_option();
17815501 JH	179	else if (!too_many_loose_objects())
17815501 JH	180	return 0;
bde30540	181
15048f8a	182	if (run_hook_le(NULL, "pre-auto-gc", NULL))
bde30540	183	return 0;
95143f9e	184	return 1;
a087cc98 JH	185	}
a087cc98 JH	186
64a99eb4 NTND	187	/* return NULL on success, else hostname running the gc */
	188	static const char lock_repo_for_gc(int force, pid_t ret_pid)
	189	{
	190	static struct lock_file lock;
64a99eb4 NTND	191	char my_host[128];
	192	struct strbuf sb = STRBUF_INIT;
	193	struct stat st;
	194	uintmax_t pid;
	195	FILE *fp;
4f1c0b21	196	int fd;
64a99eb4	197
4c5baf02 JN	198	if (pidfile)
	199	/* already locked */
	200	return NULL;
	201
64a99eb4 NTND	202	if (gethostname(my_host, sizeof(my_host)))
	203	strcpy(my_host, "unknown");
	204
	205	fd = hold_lock_file_for_update(&lock, git_path("gc.pid"),
	206	LOCK_DIE_ON_ERROR);
	207	if (!force) {
4f1c0b21 EP	208	static char locking_host[128];
4f1c0b21 EP	209	int should_exit;
64a99eb4 NTND	210	fp = fopen(git_path("gc.pid"), "r");
	211	memset(locking_host, 0, sizeof(locking_host));
	212	should_exit =
	213	fp != NULL &&
	214	!fstat(fileno(fp), &st) &&
	215	/*
	216	* 12 hour limit is very generous as gc should
	217	* never take that long. On the other hand we
	218	* don't really need a strict limit here,
	219	* running gc --auto one day late is not a big
	220	* problem. --force can be used in manual gc
	221	* after the user verifies that no gc is
	222	* running.
	223	*/
	224	time(NULL) - st.st_mtime <= 12 * 3600 &&
	225	fscanf(fp, "%"PRIuMAX" %127c", &pid, locking_host) == 2 &&
	226	/* be gentle to concurrent "gc" on remote hosts */
ed7eda8b	227	(strcmp(locking_host, my_host) \|\| !kill(pid, 0) \|\| errno == EPERM);
64a99eb4 NTND	228	if (fp != NULL)
	229	fclose(fp);
	230	if (should_exit) {
	231	if (fd >= 0)
	232	rollback_lock_file(&lock);
	233	*ret_pid = pid;
	234	return locking_host;
	235	}
	236	}
	237
	238	strbuf_addf(&sb, "%"PRIuMAX" %s",
	239	(uintmax_t) getpid(), my_host);
	240	write_in_full(fd, sb.buf, sb.len);
	241	strbuf_release(&sb);
	242	commit_lock_file(&lock);
	243
4c5baf02 JN	244	pidfile = git_pathdup("gc.pid");
	245	sigchain_push_common(remove_pidfile_on_signal);
	246	atexit(remove_pidfile);
	247
64a99eb4 NTND	248	return NULL;
	249	}
	250
62aad184 NTND	251	static int gc_before_repack(void)
	252	{
	253	if (pack_refs && run_command_v_opt(pack_refs_cmd.argv, RUN_GIT_CMD))
	254	return error(FAILED_RUN, pack_refs_cmd.argv[0]);
	255
	256	if (prune_reflogs && run_command_v_opt(reflog.argv, RUN_GIT_CMD))
	257	return error(FAILED_RUN, reflog.argv[0]);
	258
	259	pack_refs = 0;
	260	prune_reflogs = 0;
	261	return 0;
	262	}
	263
6757ada4 JB	264	int cmd_gc(int argc, const char *argv, const char prefix)
6757ada4 JB	265	{
44c637c8	266	int aggressive = 0;
2c3c4399	267	int auto_gc = 0;
a0c14cbb	268	int quiet = 0;
64a99eb4 NTND	269	int force = 0;
	270	const char *name;
	271	pid_t pid;
6757ada4	272
44c637c8	273	struct option builtin_gc_options[] = {
6705c162 NTND	274	OPT__QUIET(&quiet, N_("suppress progress reporting")),
	275	{ OPTION_STRING, 0, "prune", &prune_expire, N_("date"),
	276	N_("prune unreferenced objects"),
58e9d9d4	277	PARSE_OPT_OPTARG, NULL, (intptr_t)prune_expire },
d5d09d47 SB	278	OPT_BOOL(0, "aggressive", &aggressive, N_("be more thorough (increased runtime)")),
d5d09d47 SB	279	OPT_BOOL(0, "auto", &auto_gc, N_("enable auto-gc mode")),
64a99eb4	280	OPT_BOOL(0, "force", &force, N_("force running gc even if there may be another gc running")),
44c637c8 JB	281	OPT_END()
	282	};
	283
0c8151b6 NTND	284	if (argc == 2 && !strcmp(argv[1], "-h"))
	285	usage_with_options(builtin_gc_usage, builtin_gc_options);
	286
234587fc JK	287	argv_array_pushl(&pack_refs_cmd, "pack-refs", "--all", "--prune", NULL);
	288	argv_array_pushl(&reflog, "reflog", "expire", "--all", NULL);
	289	argv_array_pushl(&repack, "repack", "-d", "-l", NULL);
	290	argv_array_pushl(&prune, "prune", "--expire", NULL );
	291	argv_array_pushl(&rerere, "rerere", "gc", NULL);
	292
5801d3b4	293	gc_config();
6757ada4 JB	294
	295	if (pack_refs < 0)
	296	pack_refs = !is_bare_repository();
	297
37782920 SB	298	argc = parse_options(argc, argv, prefix, builtin_gc_options,
37782920 SB	299	builtin_gc_usage, 0);
44c637c8 JB	300	if (argc > 0)
	301	usage_with_options(builtin_gc_usage, builtin_gc_options);
	302
	303	if (aggressive) {
234587fc	304	argv_array_push(&repack, "-f");
125f8146 NTND	305	if (aggressive_depth > 0)
125f8146 NTND	306	argv_array_pushf(&repack, "--depth=%d", aggressive_depth);
234587fc JK	307	if (aggressive_window > 0)
234587fc JK	308	argv_array_pushf(&repack, "--window=%d", aggressive_window);
6757ada4	309	}
a0c14cbb	310	if (quiet)
234587fc	311	argv_array_push(&repack, "-q");
6757ada4	312
2c3c4399 JH	313	if (auto_gc) {
	314	/*
	315	* Auto-gc should be least intrusive as possible.
	316	*/
2c3c4399 JH	317	if (!need_to_gc())
2c3c4399 JH	318	return 0;
9f673f94 NTND	319	if (!quiet) {
	320	if (detach_auto)
	321	fprintf(stderr, _("Auto packing the repository in background for optimum performance.\n"));
	322	else
	323	fprintf(stderr, _("Auto packing the repository for optimum performance.\n"));
	324	fprintf(stderr, _("See \"git help gc\" for manual housekeeping.\n"));
	325	}
62aad184 NTND	326	if (detach_auto) {
	327	if (gc_before_repack())
	328	return -1;
9f673f94 NTND	329	/*
	330	* failure to daemonize is ok, we'll continue
	331	* in foreground
	332	*/
	333	daemonize();
62aad184	334	}
a37cce3b	335	} else
7e52f566	336	add_repack_all_option();
2c3c4399	337
64a99eb4 NTND	338	name = lock_repo_for_gc(force, &pid);
	339	if (name) {
	340	if (auto_gc)
	341	return 0; /* be quiet on --auto */
	342	die(_("gc is already running on machine '%s' pid %"PRIuMAX" (use --force if not)"),
	343	name, (uintmax_t)pid);
	344	}
	345
62aad184 NTND	346	if (gc_before_repack())
62aad184 NTND	347	return -1;
6757ada4	348
234587fc JK	349	if (run_command_v_opt(repack.argv, RUN_GIT_CMD))
234587fc JK	350	return error(FAILED_RUN, repack.argv[0]);
6757ada4	351
58e9d9d4	352	if (prune_expire) {
234587fc	353	argv_array_push(&prune, prune_expire);
bf0a59b3	354	if (quiet)
234587fc JK	355	argv_array_push(&prune, "--no-progress");
	356	if (run_command_v_opt(prune.argv, RUN_GIT_CMD))
	357	return error(FAILED_RUN, prune.argv[0]);
58e9d9d4	358	}
6757ada4	359
234587fc JK	360	if (run_command_v_opt(rerere.argv, RUN_GIT_CMD))
234587fc JK	361	return error(FAILED_RUN, rerere.argv[0]);
6757ada4	362
a087cc98	363	if (auto_gc && too_many_loose_objects())
fea6128b ÆAB	364	warning(_("There are too many unreachable loose objects; "
fea6128b ÆAB	365	"run 'git prune' to remove them."));
a087cc98	366
6757ada4 JB	367	return 0;
6757ada4 JB	368	}