[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 (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)
{
	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;
	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;
b3cecf49 NS	29	if (S_ISDIR(st.st_mode)) {
	30	if (show_only \|\| verbose)
	31	printf("Removing stale temporary directory %s\n", fullpath);
	32	if (!show_only) {
	33	struct strbuf remove_dir_buf = STRBUF_INIT;
	34
	35	strbuf_addstr(&remove_dir_buf, fullpath);
	36	remove_dir_recursively(&remove_dir_buf, 0);
	37	strbuf_release(&remove_dir_buf);
	38	}
	39	} else {
	40	if (show_only \|\| verbose)
	41	printf("Removing stale temporary file %s\n", fullpath);
	42	if (!show_only)
	43	unlink_or_warn(fullpath);
	44	}
0e8316cc BC	45	return 0;
	46	}
	47
d55a30bb	48	static void perform_reachability_traversal(struct rev_info *revs)
ba84a797	49	{
d55a30bb JK	50	static int initialized;
	51	struct progress *progress = NULL;
	52
	53	if (initialized)
	54	return;
	55
	56	if (show_progress)
	57	progress = start_delayed_progress(_("Checking connectivity"), 0);
	58	mark_reachable_objects(revs, 1, expire, progress);
	59	stop_progress(&progress);
	60	initialized = 1;
	61	}
	62
	63	static int is_object_reachable(const struct object_id *oid,
	64	struct rev_info *revs)
	65	{
c2bf473d JK	66	struct object *obj;
c2bf473d JK	67
d55a30bb	68	perform_reachability_traversal(revs);
27e1e22d	69
d0229abd	70	obj = lookup_object(the_repository, oid);
c2bf473d	71	return obj && (obj->flags & SEEN);
d55a30bb JK	72	}
	73
	74	static int prune_object(const struct object_id oid, const char fullpath,
	75	void *data)
	76	{
	77	struct rev_info *revs = data;
	78	struct stat st;
	79
	80	if (is_object_reachable(oid, revs))
27e1e22d JK	81	return 0;
	82
	83	if (lstat(fullpath, &st)) {
	84	/* report errors, but do not stop pruning */
	85	error("Could not stat '%s'", fullpath);
	86	return 0;
	87	}
cbf731ed AS	88	if (st.st_mtime > expire)
cbf731ed AS	89	return 0;
b35ddf41	90	if (show_only \|\| verbose) {
0df8e965 SB	91	enum object_type type = oid_object_info(the_repository, oid,
0df8e965 SB	92	NULL);
76c1d9a0	93	printf("%s %s\n", oid_to_hex(oid),
debca9d2	94	(type > 0) ? type_name(type) : "unknown");
b35ddf41 MG	95	}
b35ddf41 MG	96	if (!show_only)
691f1a28	97	unlink_or_warn(fullpath);
ba84a797 LT	98	return 0;
	99	}
	100
27e1e22d	101	static int prune_cruft(const char basename, const char path, void *data)
ba84a797	102	{
27e1e22d JK	103	if (starts_with(basename, "tmp_obj_"))
	104	prune_tmp_file(path);
	105	else
	106	fprintf(stderr, "bad sha1 file: %s\n", path);
ba84a797 LT	107	return 0;
	108	}
	109
70c49050	110	static int prune_subdir(unsigned int nr, const char path, void data)
ba84a797	111	{
27e1e22d JK	112	if (!show_only)
	113	rmdir(path);
	114	return 0;
ba84a797 LT	115	}
ba84a797 LT	116
8464010f DST	117	/*
	118	* Write errors (particularly out of space) can result in
	119	* failed temporary packs (and more rarely indexes and other
9517e6b8	120	* files beginning with "tmp_") accumulating in the object
db87e396	121	* and the pack directories.
8464010f	122	*/
db87e396	123	static void remove_temporary_files(const char *path)
8464010f DST	124	{
	125	DIR *dir;
	126	struct dirent *de;
8464010f	127
db87e396	128	dir = opendir(path);
8464010f	129	if (!dir) {
db87e396	130	fprintf(stderr, "Unable to open directory %s\n", path);
8464010f DST	131	return;
8464010f DST	132	}
0e8316cc	133	while ((de = readdir(dir)) != NULL)
59556548	134	if (starts_with(de->d_name, "tmp_"))
4454e9cb	135	prune_tmp_file(mkpath("%s/%s", path, de->d_name));
8464010f DST	136	closedir(dir);
	137	}
	138
a633fca0	139	int cmd_prune(int argc, const char *argv, const char prefix)
ba84a797	140	{
24304816	141	struct rev_info revs;
0c16cd49	142	int exclude_promisor_objects = 0;
629de472	143	const struct option options[] = {
8f5b7281 NTND	144	OPT__DRY_RUN(&show_only, N_("do not remove, show only")),
	145	OPT__VERBOSE(&verbose, N_("report pruned objects")),
	146	OPT_BOOL(0, "progress", &show_progress, N_("show progress")),
27ec394a JH	147	OPT_EXPIRY_DATE(0, "expire", &expire,
27ec394a JH	148	N_("expire objects older than <time>")),
0c16cd49 JT	149	OPT_BOOL(0, "exclude-promisor-objects", &exclude_promisor_objects,
0c16cd49 JT	150	N_("limit traversal to objects outside promisor packfiles")),
629de472 MB	151	OPT_END()
629de472 MB	152	};
db87e396	153	char *s;
ba84a797	154
dddbad72	155	expire = TIME_MAX;
16157b80	156	save_commit_buffer = 0;
6ebd1caf	157	read_replace_refs = 0;
2abf3503	158	repo_init_revisions(the_repository, &revs, prefix);
ba84a797	159
37782920	160	argc = parse_options(argc, argv, prefix, options, prune_usage, 0);
23af91d1	161
067fbd41 JK	162	if (repository_format_precious_objects)
	163	die(_("cannot prune in a precious-objects repo"));
	164
fe308f53	165	while (argc--) {
af6730e7	166	struct object_id oid;
fe308f53 JH	167	const char name = argv++;
fe308f53 JH	168
af6730e7	169	if (!get_oid(name, &oid)) {
c251c83d	170	struct object *object = parse_object_or_die(&oid,
c251c83d	171	name);
fe308f53 JH	172	add_pending_object(&revs, object, "");
	173	}
	174	else
	175	die("unrecognized argument: %s", name);
	176	}
bf0a59b3 JK	177
	178	if (show_progress == -1)
	179	show_progress = isatty(2);
0c16cd49 JT	180	if (exclude_promisor_objects) {
	181	fetch_if_missing = 0;
	182	revs.exclude_promisor_objects = 1;
	183	}
bf0a59b3	184
27e1e22d	185	for_each_loose_file_in_objdir(get_object_directory(), prune_object,
d55a30bb	186	prune_cruft, prune_subdir, &revs);
ba84a797	187
af0b4a3b	188	prune_packed_objects(show_only ? PRUNE_PACKED_DRY_RUN : 0);
db87e396	189	remove_temporary_files(get_object_directory());
4e2d094d	190	s = mkpathdup("%s/pack", get_object_directory());
db87e396 BC	191	remove_temporary_files(s);
db87e396 BC	192	free(s);
eab3296c	193
d55a30bb JK	194	if (is_repository_shallow(the_repository)) {
d55a30bb JK	195	perform_reachability_traversal(&revs);
2588f6ed	196	prune_shallow(show_only ? PRUNE_SHOW_ONLY : 0);
d55a30bb	197	}
eab3296c	198
ba84a797 LT	199	return 0;
ba84a797 LT	200	}