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

#include "cache.h"
#include "commit.h"
#include "diff.h"
#include "revision.h"
#include "builtin.h"
#include "reachable.h"
#include "parse-options.h"
#include "progress.h"
#include "dir.h"

static const char * const prune_usage[] = {
	N_("git prune [-n] [-v] [--expire <time>] [--] [<head>...]"),
	NULL
};
static int show_only;
static int verbose;
static unsigned long expire;
static int show_progress = -1;

static int prune_tmp_file(const char *fullpath)
{
	struct stat st;
	if (lstat(fullpath, &st))
		return error("Could not stat '%s'", fullpath);
	if (st.st_mtime > expire)
		return 0;
	if (show_only || verbose)
		printf("Removing stale temporary file %s\n", fullpath);
	if (!show_only)
		unlink_or_warn(fullpath);
	return 0;
}

static int prune_object(const unsigned char *sha1, const char *fullpath,
			void *data)
{
	struct stat st;

	/*
	 * Do we know about this object?
	 * It must have been reachable
	 */
	if (lookup_object(sha1))
		return 0;

	if (lstat(fullpath, &st)) {
		/* report errors, but do not stop pruning */
		error("Could not stat '%s'", fullpath);
		return 0;
	}
	if (st.st_mtime > expire)
		return 0;
	if (show_only || verbose) {
		enum object_type type = sha1_object_info(sha1, NULL);
		printf("%s %s\n", sha1_to_hex(sha1),
		       (type > 0) ? typename(type) : "unknown");
	}
	if (!show_only)
		unlink_or_warn(fullpath);
	return 0;
}

static int prune_cruft(const char *basename, const char *path, void *data)
{
	if (starts_with(basename, "tmp_obj_"))
		prune_tmp_file(path);
	else
		fprintf(stderr, "bad sha1 file: %s\n", path);
	return 0;
}

static int prune_subdir(int nr, const char *path, void *data)
{
	if (!show_only)
		rmdir(path);
	return 0;
}

/*
 * Write errors (particularly out of space) can result in
 * failed temporary packs (and more rarely indexes and other
 * files beginning with "tmp_") accumulating in the object
 * and the pack directories.
 */
static void remove_temporary_files(const char *path)
{
	DIR *dir;
	struct dirent *de;

	dir = opendir(path);
	if (!dir) {
		fprintf(stderr, "Unable to open directory %s\n", path);
		return;
	}
	while ((de = readdir(dir)) != NULL)
		if (starts_with(de->d_name, "tmp_"))
			prune_tmp_file(mkpath("%s/%s", path, de->d_name));
	closedir(dir);
}

int cmd_prune(int argc, const char **argv, const char *prefix)
{
	struct rev_info revs;
	struct progress *progress = NULL;
	const struct option options[] = {
		OPT__DRY_RUN(&show_only, N_("do not remove, show only")),
		OPT__VERBOSE(&verbose, N_("report pruned objects")),
		OPT_BOOL(0, "progress", &show_progress, N_("show progress")),
		OPT_EXPIRY_DATE(0, "expire", &expire,
				N_("expire objects older than <time>")),
		OPT_END()
	};
	char *s;

	expire = ULONG_MAX;
	save_commit_buffer = 0;
	check_replace_refs = 0;
	init_revisions(&revs, prefix);

	argc = parse_options(argc, argv, prefix, options, prune_usage, 0);
	while (argc--) {
		unsigned char sha1[20];
		const char *name = *argv++;

		if (!get_sha1(name, sha1)) {
			struct object *object = parse_object_or_die(sha1, name);
			add_pending_object(&revs, object, "");
		}
		else
			die("unrecognized argument: %s", name);
	}

	if (show_progress == -1)
		show_progress = isatty(2);
	if (show_progress)
		progress = start_progress_delay(_("Checking connectivity"), 0, 0, 2);

	mark_reachable_objects(&revs, 1, progress);
	stop_progress(&progress);
	for_each_loose_file_in_objdir(get_object_directory(), prune_object,
				      prune_cruft, prune_subdir, NULL);

	prune_packed_objects(show_only ? PRUNE_PACKED_DRY_RUN : 0);
	remove_temporary_files(get_object_directory());
	s = mkpathdup("%s/pack", get_object_directory());
	remove_temporary_files(s);
	free(s);

	if (is_repository_shallow())
		prune_shallow(show_only);

	return 0;
}
Commit	Line	Data
ba84a797	1	#include "cache.h"
ba84a797	2	#include "commit.h"
ba84a797 LT	3	#include "diff.h"
	4	#include "revision.h"
	5	#include "builtin.h"
94421474	6	#include "reachable.h"
629de472	7	#include "parse-options.h"
dc347195	8	#include "progress.h"
8ca12c0d	9	#include "dir.h"
ba84a797	10
629de472	11	static const char * const prune_usage[] = {
8f5b7281	12	N_("git prune [-n] [-v] [--expire <time>] [--] [<head>...]"),
629de472 MB	13	NULL
629de472 MB	14	};
96f1e58f	15	static int show_only;
b35ddf41	16	static int verbose;
f01913e4	17	static unsigned long expire;
bf0a59b3	18	static int show_progress = -1;
ba84a797	19
4454e9cb	20	static int prune_tmp_file(const char *fullpath)
0e8316cc	21	{
cbf731ed AS	22	struct stat st;
	23	if (lstat(fullpath, &st))
	24	return error("Could not stat '%s'", fullpath);
	25	if (st.st_mtime > expire)
	26	return 0;
90b29cb7 BC	27	if (show_only \|\| verbose)
90b29cb7 BC	28	printf("Removing stale temporary file %s\n", fullpath);
0e8316cc	29	if (!show_only)
691f1a28	30	unlink_or_warn(fullpath);
0e8316cc BC	31	return 0;
	32	}
	33
27e1e22d JK	34	static int prune_object(const unsigned char sha1, const char fullpath,
27e1e22d JK	35	void *data)
ba84a797	36	{
cbf731ed	37	struct stat st;
27e1e22d JK	38
	39	/*
	40	* Do we know about this object?
	41	* It must have been reachable
	42	*/
	43	if (lookup_object(sha1))
	44	return 0;
	45
	46	if (lstat(fullpath, &st)) {
	47	/* report errors, but do not stop pruning */
	48	error("Could not stat '%s'", fullpath);
	49	return 0;
	50	}
cbf731ed AS	51	if (st.st_mtime > expire)
cbf731ed AS	52	return 0;
b35ddf41	53	if (show_only \|\| verbose) {
21666f1a NP	54	enum object_type type = sha1_object_info(sha1, NULL);
	55	printf("%s %s\n", sha1_to_hex(sha1),
	56	(type > 0) ? typename(type) : "unknown");
b35ddf41 MG	57	}
b35ddf41 MG	58	if (!show_only)
691f1a28	59	unlink_or_warn(fullpath);
ba84a797 LT	60	return 0;
	61	}
	62
27e1e22d	63	static int prune_cruft(const char basename, const char path, void *data)
ba84a797	64	{
27e1e22d JK	65	if (starts_with(basename, "tmp_obj_"))
	66	prune_tmp_file(path);
	67	else
	68	fprintf(stderr, "bad sha1 file: %s\n", path);
ba84a797 LT	69	return 0;
	70	}
	71
27e1e22d	72	static int prune_subdir(int nr, const char path, void data)
ba84a797	73	{
27e1e22d JK	74	if (!show_only)
	75	rmdir(path);
	76	return 0;
ba84a797 LT	77	}
ba84a797 LT	78
8464010f DST	79	/*
	80	* Write errors (particularly out of space) can result in
	81	* failed temporary packs (and more rarely indexes and other
9517e6b8	82	* files beginning with "tmp_") accumulating in the object
db87e396	83	* and the pack directories.
8464010f	84	*/
db87e396	85	static void remove_temporary_files(const char *path)
8464010f DST	86	{
	87	DIR *dir;
	88	struct dirent *de;
8464010f	89
db87e396	90	dir = opendir(path);
8464010f	91	if (!dir) {
db87e396	92	fprintf(stderr, "Unable to open directory %s\n", path);
8464010f DST	93	return;
8464010f DST	94	}
0e8316cc	95	while ((de = readdir(dir)) != NULL)
59556548	96	if (starts_with(de->d_name, "tmp_"))
4454e9cb	97	prune_tmp_file(mkpath("%s/%s", path, de->d_name));
8464010f DST	98	closedir(dir);
	99	}
	100
a633fca0	101	int cmd_prune(int argc, const char *argv, const char prefix)
ba84a797	102	{
24304816	103	struct rev_info revs;
bf0a59b3	104	struct progress *progress = NULL;
629de472	105	const struct option options[] = {
8f5b7281 NTND	106	OPT__DRY_RUN(&show_only, N_("do not remove, show only")),
	107	OPT__VERBOSE(&verbose, N_("report pruned objects")),
	108	OPT_BOOL(0, "progress", &show_progress, N_("show progress")),
27ec394a JH	109	OPT_EXPIRY_DATE(0, "expire", &expire,
27ec394a JH	110	N_("expire objects older than <time>")),
629de472 MB	111	OPT_END()
629de472 MB	112	};
db87e396	113	char *s;
ba84a797	114
cbf731ed	115	expire = ULONG_MAX;
16157b80	116	save_commit_buffer = 0;
afc711b8	117	check_replace_refs = 0;
a633fca0	118	init_revisions(&revs, prefix);
ba84a797	119
37782920	120	argc = parse_options(argc, argv, prefix, options, prune_usage, 0);
fe308f53 JH	121	while (argc--) {
	122	unsigned char sha1[20];
	123	const char name = argv++;
	124
	125	if (!get_sha1(name, sha1)) {
f7892d18	126	struct object *object = parse_object_or_die(sha1, name);
fe308f53 JH	127	add_pending_object(&revs, object, "");
	128	}
	129	else
	130	die("unrecognized argument: %s", name);
	131	}
bf0a59b3 JK	132
	133	if (show_progress == -1)
	134	show_progress = isatty(2);
	135	if (show_progress)
754dbc43	136	progress = start_progress_delay(_("Checking connectivity"), 0, 0, 2);
bf0a59b3	137
dc347195 NTND	138	mark_reachable_objects(&revs, 1, progress);
dc347195 NTND	139	stop_progress(&progress);
27e1e22d JK	140	for_each_loose_file_in_objdir(get_object_directory(), prune_object,
27e1e22d JK	141	prune_cruft, prune_subdir, NULL);
ba84a797	142
af0b4a3b	143	prune_packed_objects(show_only ? PRUNE_PACKED_DRY_RUN : 0);
db87e396	144	remove_temporary_files(get_object_directory());
4e2d094d	145	s = mkpathdup("%s/pack", get_object_directory());
db87e396 BC	146	remove_temporary_files(s);
db87e396 BC	147	free(s);
eab3296c NTND	148
	149	if (is_repository_shallow())
	150	prune_shallow(show_only);
	151
ba84a797 LT	152	return 0;
ba84a797 LT	153	}