[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 "object-store.h"

static const char * const prune_usage[] = {
	N_("git prune [-n] [-v] [--progress] [--expire <time>] [--] [<head>...]"),
	NULL
};
static int show_only;
static int verbose;
static timestamp_t 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 void perform_reachability_traversal(struct rev_info *revs)
{
	static int initialized;
	struct progress *progress = NULL;

	if (initialized)
		return;

	if (show_progress)
		progress = start_delayed_progress(_("Checking connectivity"), 0);
	mark_reachable_objects(revs, 1, expire, progress);
	stop_progress(&progress);
	initialized = 1;
}

static int is_object_reachable(const struct object_id *oid,
			       struct rev_info *revs)
{
	struct object *obj;

	perform_reachability_traversal(revs);

	obj = lookup_object(the_repository, oid);
	return obj && (obj->flags & SEEN);
}

static int prune_object(const struct object_id *oid, const char *fullpath,
			void *data)
{
	struct rev_info *revs = data;
	struct stat st;

	if (is_object_reachable(oid, revs))
		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 = oid_object_info(the_repository, oid,
							NULL);
		printf("%s %s\n", oid_to_hex(oid),
		       (type > 0) ? type_name(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(unsigned 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;
	int exclude_promisor_objects = 0;
	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_BOOL(0, "exclude-promisor-objects", &exclude_promisor_objects,
			 N_("limit traversal to objects outside promisor packfiles")),
		OPT_END()
	};
	char *s;

	expire = TIME_MAX;
	save_commit_buffer = 0;
	read_replace_refs = 0;
	ref_paranoia = 1;
	repo_init_revisions(the_repository, &revs, prefix);

	argc = parse_options(argc, argv, prefix, options, prune_usage, 0);

	if (repository_format_precious_objects)
		die(_("cannot prune in a precious-objects repo"));

	while (argc--) {
		struct object_id oid;
		const char *name = *argv++;

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

	if (show_progress == -1)
		show_progress = isatty(2);
	if (exclude_promisor_objects) {
		fetch_if_missing = 0;
		revs.exclude_promisor_objects = 1;
	}

	for_each_loose_file_in_objdir(get_object_directory(), prune_object,
				      prune_cruft, prune_subdir, &revs);

	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(the_repository)) {
		perform_reachability_traversal(&revs);
		prune_shallow(show_only ? PRUNE_SHOW_ONLY : 0);
	}

	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"
cbd53a21	9	#include "object-store.h"
ba84a797	10
629de472	11	static const char * const prune_usage[] = {
1a1fc2d5	12	N_("git prune [-n] [-v] [--progress] [--expire <time>] [--] [<head>...]"),
629de472 MB	13	NULL
629de472 MB	14	};
96f1e58f	15	static int show_only;
b35ddf41	16	static int verbose;
dddbad72	17	static timestamp_t 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
d55a30bb	34	static void perform_reachability_traversal(struct rev_info *revs)
ba84a797	35	{
d55a30bb JK	36	static int initialized;
	37	struct progress *progress = NULL;
	38
	39	if (initialized)
	40	return;
	41
	42	if (show_progress)
	43	progress = start_delayed_progress(_("Checking connectivity"), 0);
	44	mark_reachable_objects(revs, 1, expire, progress);
	45	stop_progress(&progress);
	46	initialized = 1;
	47	}
	48
	49	static int is_object_reachable(const struct object_id *oid,
	50	struct rev_info *revs)
	51	{
c2bf473d JK	52	struct object *obj;
c2bf473d JK	53
d55a30bb	54	perform_reachability_traversal(revs);
27e1e22d	55
d0229abd	56	obj = lookup_object(the_repository, oid);
c2bf473d	57	return obj && (obj->flags & SEEN);
d55a30bb JK	58	}
	59
	60	static int prune_object(const struct object_id oid, const char fullpath,
	61	void *data)
	62	{
	63	struct rev_info *revs = data;
	64	struct stat st;
	65
	66	if (is_object_reachable(oid, revs))
27e1e22d JK	67	return 0;
	68
	69	if (lstat(fullpath, &st)) {
	70	/* report errors, but do not stop pruning */
	71	error("Could not stat '%s'", fullpath);
	72	return 0;
	73	}
cbf731ed AS	74	if (st.st_mtime > expire)
cbf731ed AS	75	return 0;
b35ddf41	76	if (show_only \|\| verbose) {
0df8e965 SB	77	enum object_type type = oid_object_info(the_repository, oid,
0df8e965 SB	78	NULL);
76c1d9a0	79	printf("%s %s\n", oid_to_hex(oid),
debca9d2	80	(type > 0) ? type_name(type) : "unknown");
b35ddf41 MG	81	}
b35ddf41 MG	82	if (!show_only)
691f1a28	83	unlink_or_warn(fullpath);
ba84a797 LT	84	return 0;
	85	}
	86
27e1e22d	87	static int prune_cruft(const char basename, const char path, void *data)
ba84a797	88	{
27e1e22d JK	89	if (starts_with(basename, "tmp_obj_"))
	90	prune_tmp_file(path);
	91	else
	92	fprintf(stderr, "bad sha1 file: %s\n", path);
ba84a797 LT	93	return 0;
	94	}
	95
70c49050	96	static int prune_subdir(unsigned int nr, const char path, void data)
ba84a797	97	{
27e1e22d JK	98	if (!show_only)
	99	rmdir(path);
	100	return 0;
ba84a797 LT	101	}
ba84a797 LT	102
8464010f DST	103	/*
	104	* Write errors (particularly out of space) can result in
	105	* failed temporary packs (and more rarely indexes and other
9517e6b8	106	* files beginning with "tmp_") accumulating in the object
db87e396	107	* and the pack directories.
8464010f	108	*/
db87e396	109	static void remove_temporary_files(const char *path)
8464010f DST	110	{
	111	DIR *dir;
	112	struct dirent *de;
8464010f	113
db87e396	114	dir = opendir(path);
8464010f	115	if (!dir) {
db87e396	116	fprintf(stderr, "Unable to open directory %s\n", path);
8464010f DST	117	return;
8464010f DST	118	}
0e8316cc	119	while ((de = readdir(dir)) != NULL)
59556548	120	if (starts_with(de->d_name, "tmp_"))
4454e9cb	121	prune_tmp_file(mkpath("%s/%s", path, de->d_name));
8464010f DST	122	closedir(dir);
	123	}
	124
a633fca0	125	int cmd_prune(int argc, const char *argv, const char prefix)
ba84a797	126	{
24304816	127	struct rev_info revs;
0c16cd49	128	int exclude_promisor_objects = 0;
629de472	129	const struct option options[] = {
8f5b7281 NTND	130	OPT__DRY_RUN(&show_only, N_("do not remove, show only")),
	131	OPT__VERBOSE(&verbose, N_("report pruned objects")),
	132	OPT_BOOL(0, "progress", &show_progress, N_("show progress")),
27ec394a JH	133	OPT_EXPIRY_DATE(0, "expire", &expire,
27ec394a JH	134	N_("expire objects older than <time>")),
0c16cd49 JT	135	OPT_BOOL(0, "exclude-promisor-objects", &exclude_promisor_objects,
0c16cd49 JT	136	N_("limit traversal to objects outside promisor packfiles")),
629de472 MB	137	OPT_END()
629de472 MB	138	};
db87e396	139	char *s;
ba84a797	140
dddbad72	141	expire = TIME_MAX;
16157b80	142	save_commit_buffer = 0;
6ebd1caf	143	read_replace_refs = 0;
ff4056bb	144	ref_paranoia = 1;
2abf3503	145	repo_init_revisions(the_repository, &revs, prefix);
ba84a797	146
37782920	147	argc = parse_options(argc, argv, prefix, options, prune_usage, 0);
23af91d1	148
067fbd41 JK	149	if (repository_format_precious_objects)
	150	die(_("cannot prune in a precious-objects repo"));
	151
fe308f53	152	while (argc--) {
af6730e7	153	struct object_id oid;
fe308f53 JH	154	const char name = argv++;
fe308f53 JH	155
af6730e7	156	if (!get_oid(name, &oid)) {
c251c83d	157	struct object *object = parse_object_or_die(&oid,
c251c83d	158	name);
fe308f53 JH	159	add_pending_object(&revs, object, "");
	160	}
	161	else
	162	die("unrecognized argument: %s", name);
	163	}
bf0a59b3 JK	164
	165	if (show_progress == -1)
	166	show_progress = isatty(2);
0c16cd49 JT	167	if (exclude_promisor_objects) {
	168	fetch_if_missing = 0;
	169	revs.exclude_promisor_objects = 1;
	170	}
bf0a59b3	171
27e1e22d	172	for_each_loose_file_in_objdir(get_object_directory(), prune_object,
d55a30bb	173	prune_cruft, prune_subdir, &revs);
ba84a797	174
af0b4a3b	175	prune_packed_objects(show_only ? PRUNE_PACKED_DRY_RUN : 0);
db87e396	176	remove_temporary_files(get_object_directory());
4e2d094d	177	s = mkpathdup("%s/pack", get_object_directory());
db87e396 BC	178	remove_temporary_files(s);
db87e396 BC	179	free(s);
eab3296c	180
d55a30bb JK	181	if (is_repository_shallow(the_repository)) {
d55a30bb JK	182	perform_reachability_traversal(&revs);
2588f6ed	183	prune_shallow(show_only ? PRUNE_SHOW_ONLY : 0);
d55a30bb	184	}
eab3296c	185
ba84a797 LT	186	return 0;
ba84a797 LT	187	}