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

#include "builtin.h"
#include "commit.h"
#include "diff.h"
#include "environment.h"
#include "gettext.h"
#include "hex.h"
#include "revision.h"
#include "reachable.h"
#include "parse-options.h"
#include "path.h"
#include "progress.h"
#include "prune-packed.h"
#include "replace-object.h"
#include "object-file.h"
#include "object-name.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 (S_ISDIR(st.st_mode)) {
		if (show_only || verbose)
			printf("Removing stale temporary directory %s\n", fullpath);
		if (!show_only) {
			struct strbuf remove_dir_buf = STRBUF_INIT;

			strbuf_addstr(&remove_dir_buf, fullpath);
			remove_dir_recursively(&remove_dir_buf, 0);
			strbuf_release(&remove_dir_buf);
		}
	} else {
		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 UNUSED)
{
	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 UNUSED, const char *path,
			void *data UNUSED)
{
	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) {
		if (errno != ENOENT)
			fprintf(stderr, "Unable to open directory %s: %s\n",
				path, strerror(errno));
		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;
	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 (!repo_get_oid(the_repository, 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);
	}

	release_revisions(&revs);
	return 0;
}
Commit	Line	Data
bc5c5ec0	1	#include "builtin.h"
ba84a797	2	#include "commit.h"
ba84a797	3	#include "diff.h"
32a8f510	4	#include "environment.h"
f394e093	5	#include "gettext.h"
41771fa4	6	#include "hex.h"
ba84a797	7	#include "revision.h"
94421474	8	#include "reachable.h"
629de472	9	#include "parse-options.h"
c339932b	10	#include "path.h"
dc347195	11	#include "progress.h"
9460fd48	12	#include "prune-packed.h"
cbeab747	13	#include "replace-object.h"
87bed179	14	#include "object-file.h"
dabab1d6	15	#include "object-name.h"
cbd53a21	16	#include "object-store.h"
120ad2b0	17	#include "shallow.h"
ba84a797	18
629de472	19	static const char * const prune_usage[] = {
1a1fc2d5	20	N_("git prune [-n] [-v] [--progress] [--expire <time>] [--] [<head>...]"),
629de472 MB	21	NULL
629de472 MB	22	};
96f1e58f	23	static int show_only;
b35ddf41	24	static int verbose;
dddbad72	25	static timestamp_t expire;
bf0a59b3	26	static int show_progress = -1;
ba84a797	27
4454e9cb	28	static int prune_tmp_file(const char *fullpath)
0e8316cc	29	{
cbf731ed AS	30	struct stat st;
	31	if (lstat(fullpath, &st))
	32	return error("Could not stat '%s'", fullpath);
	33	if (st.st_mtime > expire)
	34	return 0;
b3cecf49 NS	35	if (S_ISDIR(st.st_mode)) {
	36	if (show_only \|\| verbose)
	37	printf("Removing stale temporary directory %s\n", fullpath);
	38	if (!show_only) {
	39	struct strbuf remove_dir_buf = STRBUF_INIT;
	40
	41	strbuf_addstr(&remove_dir_buf, fullpath);
	42	remove_dir_recursively(&remove_dir_buf, 0);
	43	strbuf_release(&remove_dir_buf);
	44	}
	45	} else {
	46	if (show_only \|\| verbose)
	47	printf("Removing stale temporary file %s\n", fullpath);
	48	if (!show_only)
	49	unlink_or_warn(fullpath);
	50	}
0e8316cc BC	51	return 0;
	52	}
	53
d55a30bb	54	static void perform_reachability_traversal(struct rev_info *revs)
ba84a797	55	{
d55a30bb JK	56	static int initialized;
	57	struct progress *progress = NULL;
	58
	59	if (initialized)
	60	return;
	61
	62	if (show_progress)
	63	progress = start_delayed_progress(_("Checking connectivity"), 0);
	64	mark_reachable_objects(revs, 1, expire, progress);
	65	stop_progress(&progress);
	66	initialized = 1;
	67	}
	68
	69	static int is_object_reachable(const struct object_id *oid,
	70	struct rev_info *revs)
	71	{
c2bf473d JK	72	struct object *obj;
c2bf473d JK	73
d55a30bb	74	perform_reachability_traversal(revs);
27e1e22d	75
d0229abd	76	obj = lookup_object(the_repository, oid);
c2bf473d	77	return obj && (obj->flags & SEEN);
d55a30bb JK	78	}
	79
	80	static int prune_object(const struct object_id oid, const char fullpath,
	81	void *data)
	82	{
	83	struct rev_info *revs = data;
	84	struct stat st;
	85
	86	if (is_object_reachable(oid, revs))
27e1e22d JK	87	return 0;
	88
	89	if (lstat(fullpath, &st)) {
	90	/* report errors, but do not stop pruning */
	91	error("Could not stat '%s'", fullpath);
	92	return 0;
	93	}
cbf731ed AS	94	if (st.st_mtime > expire)
cbf731ed AS	95	return 0;
b35ddf41	96	if (show_only \|\| verbose) {
0df8e965 SB	97	enum object_type type = oid_object_info(the_repository, oid,
0df8e965 SB	98	NULL);
76c1d9a0	99	printf("%s %s\n", oid_to_hex(oid),
debca9d2	100	(type > 0) ? type_name(type) : "unknown");
b35ddf41 MG	101	}
b35ddf41 MG	102	if (!show_only)
691f1a28	103	unlink_or_warn(fullpath);
ba84a797 LT	104	return 0;
	105	}
	106
be252d33 JK	107	static int prune_cruft(const char basename, const char path,
be252d33 JK	108	void *data UNUSED)
ba84a797	109	{
27e1e22d JK	110	if (starts_with(basename, "tmp_obj_"))
	111	prune_tmp_file(path);
	112	else
	113	fprintf(stderr, "bad sha1 file: %s\n", path);
ba84a797 LT	114	return 0;
	115	}
	116
be252d33 JK	117	static int prune_subdir(unsigned int nr UNUSED, const char *path,
be252d33 JK	118	void *data UNUSED)
ba84a797	119	{
27e1e22d JK	120	if (!show_only)
	121	rmdir(path);
	122	return 0;
ba84a797 LT	123	}
ba84a797 LT	124
8464010f DST	125	/*
	126	* Write errors (particularly out of space) can result in
	127	* failed temporary packs (and more rarely indexes and other
9517e6b8	128	* files beginning with "tmp_") accumulating in the object
db87e396	129	* and the pack directories.
8464010f	130	*/
db87e396	131	static void remove_temporary_files(const char *path)
8464010f DST	132	{
	133	DIR *dir;
	134	struct dirent *de;
8464010f	135
db87e396	136	dir = opendir(path);
8464010f	137	if (!dir) {
69747653 EW	138	if (errno != ENOENT)
	139	fprintf(stderr, "Unable to open directory %s: %s\n",
	140	path, strerror(errno));
8464010f DST	141	return;
8464010f DST	142	}
0e8316cc	143	while ((de = readdir(dir)) != NULL)
59556548	144	if (starts_with(de->d_name, "tmp_"))
4454e9cb	145	prune_tmp_file(mkpath("%s/%s", path, de->d_name));
8464010f DST	146	closedir(dir);
	147	}
	148
a633fca0	149	int cmd_prune(int argc, const char *argv, const char prefix)
ba84a797	150	{
24304816	151	struct rev_info revs;
0c16cd49	152	int exclude_promisor_objects = 0;
629de472	153	const struct option options[] = {
8f5b7281 NTND	154	OPT__DRY_RUN(&show_only, N_("do not remove, show only")),
	155	OPT__VERBOSE(&verbose, N_("report pruned objects")),
	156	OPT_BOOL(0, "progress", &show_progress, N_("show progress")),
27ec394a JH	157	OPT_EXPIRY_DATE(0, "expire", &expire,
27ec394a JH	158	N_("expire objects older than <time>")),
0c16cd49 JT	159	OPT_BOOL(0, "exclude-promisor-objects", &exclude_promisor_objects,
0c16cd49 JT	160	N_("limit traversal to objects outside promisor packfiles")),
629de472 MB	161	OPT_END()
629de472 MB	162	};
db87e396	163	char *s;
ba84a797	164
dddbad72	165	expire = TIME_MAX;
16157b80	166	save_commit_buffer = 0;
6ebd1caf	167	read_replace_refs = 0;
2abf3503	168	repo_init_revisions(the_repository, &revs, prefix);
ba84a797	169
37782920	170	argc = parse_options(argc, argv, prefix, options, prune_usage, 0);
23af91d1	171
067fbd41 JK	172	if (repository_format_precious_objects)
	173	die(_("cannot prune in a precious-objects repo"));
	174
fe308f53	175	while (argc--) {
af6730e7	176	struct object_id oid;
fe308f53 JH	177	const char name = argv++;
fe308f53 JH	178
d850b7a5	179	if (!repo_get_oid(the_repository, name, &oid)) {
c251c83d	180	struct object *object = parse_object_or_die(&oid,
c251c83d	181	name);
fe308f53 JH	182	add_pending_object(&revs, object, "");
	183	}
	184	else
	185	die("unrecognized argument: %s", name);
	186	}
bf0a59b3 JK	187
	188	if (show_progress == -1)
	189	show_progress = isatty(2);
0c16cd49 JT	190	if (exclude_promisor_objects) {
	191	fetch_if_missing = 0;
	192	revs.exclude_promisor_objects = 1;
	193	}
bf0a59b3	194
27e1e22d	195	for_each_loose_file_in_objdir(get_object_directory(), prune_object,
d55a30bb	196	prune_cruft, prune_subdir, &revs);
ba84a797	197
af0b4a3b	198	prune_packed_objects(show_only ? PRUNE_PACKED_DRY_RUN : 0);
db87e396	199	remove_temporary_files(get_object_directory());
4e2d094d	200	s = mkpathdup("%s/pack", get_object_directory());
db87e396 BC	201	remove_temporary_files(s);
db87e396 BC	202	free(s);
eab3296c	203
d55a30bb JK	204	if (is_repository_shallow(the_repository)) {
d55a30bb JK	205	perform_reachability_traversal(&revs);
2588f6ed	206	prune_shallow(show_only ? PRUNE_SHOW_ONLY : 0);
d55a30bb	207	}
eab3296c	208
2108fe4a	209	release_revisions(&revs);
ba84a797 LT	210	return 0;
ba84a797 LT	211	}