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

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