[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 "prune-packed.h"
#include "object-store.h"
#include "shallow.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"
9460fd48	9	#include "prune-packed.h"
cbd53a21	10	#include "object-store.h"
120ad2b0	11	#include "shallow.h"
ba84a797	12
629de472	13	static const char * const prune_usage[] = {
1a1fc2d5	14	N_("git prune [-n] [-v] [--progress] [--expire <time>] [--] [<head>...]"),
629de472 MB	15	NULL
629de472 MB	16	};
96f1e58f	17	static int show_only;
b35ddf41	18	static int verbose;
dddbad72	19	static timestamp_t expire;
bf0a59b3	20	static int show_progress = -1;
ba84a797	21
4454e9cb	22	static int prune_tmp_file(const char *fullpath)
0e8316cc	23	{
cbf731ed AS	24	struct stat st;
	25	if (lstat(fullpath, &st))
	26	return error("Could not stat '%s'", fullpath);
	27	if (st.st_mtime > expire)
	28	return 0;
90b29cb7 BC	29	if (show_only \|\| verbose)
90b29cb7 BC	30	printf("Removing stale temporary file %s\n", fullpath);
0e8316cc	31	if (!show_only)
691f1a28	32	unlink_or_warn(fullpath);
0e8316cc BC	33	return 0;
	34	}
	35
d55a30bb	36	static void perform_reachability_traversal(struct rev_info *revs)
ba84a797	37	{
d55a30bb JK	38	static int initialized;
	39	struct progress *progress = NULL;
	40
	41	if (initialized)
	42	return;
	43
	44	if (show_progress)
	45	progress = start_delayed_progress(_("Checking connectivity"), 0);
	46	mark_reachable_objects(revs, 1, expire, progress);
	47	stop_progress(&progress);
	48	initialized = 1;
	49	}
	50
	51	static int is_object_reachable(const struct object_id *oid,
	52	struct rev_info *revs)
	53	{
c2bf473d JK	54	struct object *obj;
c2bf473d JK	55
d55a30bb	56	perform_reachability_traversal(revs);
27e1e22d	57
d0229abd	58	obj = lookup_object(the_repository, oid);
c2bf473d	59	return obj && (obj->flags & SEEN);
d55a30bb JK	60	}
	61
	62	static int prune_object(const struct object_id oid, const char fullpath,
	63	void *data)
	64	{
	65	struct rev_info *revs = data;
	66	struct stat st;
	67
	68	if (is_object_reachable(oid, revs))
27e1e22d JK	69	return 0;
	70
	71	if (lstat(fullpath, &st)) {
	72	/* report errors, but do not stop pruning */
	73	error("Could not stat '%s'", fullpath);
	74	return 0;
	75	}
cbf731ed AS	76	if (st.st_mtime > expire)
cbf731ed AS	77	return 0;
b35ddf41	78	if (show_only \|\| verbose) {
0df8e965 SB	79	enum object_type type = oid_object_info(the_repository, oid,
0df8e965 SB	80	NULL);
76c1d9a0	81	printf("%s %s\n", oid_to_hex(oid),
debca9d2	82	(type > 0) ? type_name(type) : "unknown");
b35ddf41 MG	83	}
b35ddf41 MG	84	if (!show_only)
691f1a28	85	unlink_or_warn(fullpath);
ba84a797 LT	86	return 0;
	87	}
	88
27e1e22d	89	static int prune_cruft(const char basename, const char path, void *data)
ba84a797	90	{
27e1e22d JK	91	if (starts_with(basename, "tmp_obj_"))
	92	prune_tmp_file(path);
	93	else
	94	fprintf(stderr, "bad sha1 file: %s\n", path);
ba84a797 LT	95	return 0;
	96	}
	97
70c49050	98	static int prune_subdir(unsigned int nr, const char path, void data)
ba84a797	99	{
27e1e22d JK	100	if (!show_only)
	101	rmdir(path);
	102	return 0;
ba84a797 LT	103	}
ba84a797 LT	104
8464010f DST	105	/*
	106	* Write errors (particularly out of space) can result in
	107	* failed temporary packs (and more rarely indexes and other
9517e6b8	108	* files beginning with "tmp_") accumulating in the object
db87e396	109	* and the pack directories.
8464010f	110	*/
db87e396	111	static void remove_temporary_files(const char *path)
8464010f DST	112	{
	113	DIR *dir;
	114	struct dirent *de;
8464010f	115
db87e396	116	dir = opendir(path);
8464010f	117	if (!dir) {
db87e396	118	fprintf(stderr, "Unable to open directory %s\n", path);
8464010f DST	119	return;
8464010f DST	120	}
0e8316cc	121	while ((de = readdir(dir)) != NULL)
59556548	122	if (starts_with(de->d_name, "tmp_"))
4454e9cb	123	prune_tmp_file(mkpath("%s/%s", path, de->d_name));
8464010f DST	124	closedir(dir);
	125	}
	126
a633fca0	127	int cmd_prune(int argc, const char *argv, const char prefix)
ba84a797	128	{
24304816	129	struct rev_info revs;
0c16cd49	130	int exclude_promisor_objects = 0;
629de472	131	const struct option options[] = {
8f5b7281 NTND	132	OPT__DRY_RUN(&show_only, N_("do not remove, show only")),
	133	OPT__VERBOSE(&verbose, N_("report pruned objects")),
	134	OPT_BOOL(0, "progress", &show_progress, N_("show progress")),
27ec394a JH	135	OPT_EXPIRY_DATE(0, "expire", &expire,
27ec394a JH	136	N_("expire objects older than <time>")),
0c16cd49 JT	137	OPT_BOOL(0, "exclude-promisor-objects", &exclude_promisor_objects,
0c16cd49 JT	138	N_("limit traversal to objects outside promisor packfiles")),
629de472 MB	139	OPT_END()
629de472 MB	140	};
db87e396	141	char *s;
ba84a797	142
dddbad72	143	expire = TIME_MAX;
16157b80	144	save_commit_buffer = 0;
6ebd1caf	145	read_replace_refs = 0;
ff4056bb	146	ref_paranoia = 1;
2abf3503	147	repo_init_revisions(the_repository, &revs, prefix);
ba84a797	148
37782920	149	argc = parse_options(argc, argv, prefix, options, prune_usage, 0);
23af91d1	150
067fbd41 JK	151	if (repository_format_precious_objects)
	152	die(_("cannot prune in a precious-objects repo"));
	153
fe308f53	154	while (argc--) {
af6730e7	155	struct object_id oid;
fe308f53 JH	156	const char name = argv++;
fe308f53 JH	157
af6730e7	158	if (!get_oid(name, &oid)) {
c251c83d	159	struct object *object = parse_object_or_die(&oid,
c251c83d	160	name);
fe308f53 JH	161	add_pending_object(&revs, object, "");
	162	}
	163	else
	164	die("unrecognized argument: %s", name);
	165	}
bf0a59b3 JK	166
	167	if (show_progress == -1)
	168	show_progress = isatty(2);
0c16cd49 JT	169	if (exclude_promisor_objects) {
	170	fetch_if_missing = 0;
	171	revs.exclude_promisor_objects = 1;
	172	}
bf0a59b3	173
27e1e22d	174	for_each_loose_file_in_objdir(get_object_directory(), prune_object,
d55a30bb	175	prune_cruft, prune_subdir, &revs);
ba84a797	176
af0b4a3b	177	prune_packed_objects(show_only ? PRUNE_PACKED_DRY_RUN : 0);
db87e396	178	remove_temporary_files(get_object_directory());
4e2d094d	179	s = mkpathdup("%s/pack", get_object_directory());
db87e396 BC	180	remove_temporary_files(s);
db87e396 BC	181	free(s);
eab3296c	182
d55a30bb JK	183	if (is_repository_shallow(the_repository)) {
d55a30bb JK	184	perform_reachability_traversal(&revs);
2588f6ed	185	prune_shallow(show_only ? PRUNE_SHOW_ONLY : 0);
d55a30bb	186	}
eab3296c	187
ba84a797 LT	188	return 0;
ba84a797 LT	189	}