[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 "dir.h"

static const char * const prune_usage[] = {
	N_("git prune [-n] [-v] [--expire <time>] [--] [<head>...]"),
	NULL
};
static int show_only;
static int verbose;
static unsigned long 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 int prune_object(const char *fullpath, const unsigned char *sha1)
{
	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) {
		enum object_type type = sha1_object_info(sha1, NULL);
		printf("%s %s\n", sha1_to_hex(sha1),
		       (type > 0) ? typename(type) : "unknown");
	}
	if (!show_only)
		unlink_or_warn(fullpath);
	return 0;
}

static int prune_dir(int i, struct strbuf *path)
{
	size_t baselen = path->len;
	DIR *dir = opendir(path->buf);
	struct dirent *de;

	if (!dir)
		return 0;

	while ((de = readdir(dir)) != NULL) {
		char name[100];
		unsigned char sha1[20];

		if (is_dot_or_dotdot(de->d_name))
			continue;
		if (strlen(de->d_name) == 38) {
			sprintf(name, "%02x", i);
			memcpy(name+2, de->d_name, 39);
			if (get_sha1_hex(name, sha1) < 0)
				break;

			/*
			 * Do we know about this object?
			 * It must have been reachable
			 */
			if (lookup_object(sha1))
				continue;

			strbuf_addf(path, "/%s", de->d_name);
			prune_object(path->buf, sha1);
			strbuf_setlen(path, baselen);
			continue;
		}
		if (starts_with(de->d_name, "tmp_obj_")) {
			strbuf_addf(path, "/%s", de->d_name);
			prune_tmp_file(path->buf);
			strbuf_setlen(path, baselen);
			continue;
		}
		fprintf(stderr, "bad sha1 file: %s/%s\n", path->buf, de->d_name);
	}
	closedir(dir);
	if (!show_only)
		rmdir(path->buf);
	return 0;
}

static void prune_object_dir(const char *path)
{
	struct strbuf buf = STRBUF_INIT;
	size_t baselen;
	int i;

	strbuf_addstr(&buf, path);
	strbuf_addch(&buf, '/');
	baselen = buf.len;

	for (i = 0; i < 256; i++) {
		strbuf_addf(&buf, "%02x", i);
		prune_dir(i, &buf);
		strbuf_setlen(&buf, baselen);
	}
}

/*
 * 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;
	struct progress *progress = NULL;
	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_END()
	};
	char *s;

	expire = ULONG_MAX;
	save_commit_buffer = 0;
	check_replace_refs = 0;
	init_revisions(&revs, prefix);

	argc = parse_options(argc, argv, prefix, options, prune_usage, 0);
	while (argc--) {
		unsigned char sha1[20];
		const char *name = *argv++;

		if (!get_sha1(name, sha1)) {
			struct object *object = parse_object_or_die(sha1, name);
			add_pending_object(&revs, object, "");
		}
		else
			die("unrecognized argument: %s", name);
	}

	if (show_progress == -1)
		show_progress = isatty(2);
	if (show_progress)
		progress = start_progress_delay(_("Checking connectivity"), 0, 0, 2);

	mark_reachable_objects(&revs, 1, progress);
	stop_progress(&progress);
	prune_object_dir(get_object_directory());

	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())
		prune_shallow(show_only);

	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"
8ca12c0d	9	#include "dir.h"
ba84a797	10
629de472	11	static const char * const prune_usage[] = {
8f5b7281	12	N_("git prune [-n] [-v] [--expire <time>] [--] [<head>...]"),
629de472 MB	13	NULL
629de472 MB	14	};
96f1e58f	15	static int show_only;
b35ddf41	16	static int verbose;
f01913e4	17	static unsigned long 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
4454e9cb	34	static int prune_object(const char fullpath, const unsigned char sha1)
ba84a797	35	{
cbf731ed AS	36	struct stat st;
	37	if (lstat(fullpath, &st))
	38	return error("Could not stat '%s'", fullpath);
	39	if (st.st_mtime > expire)
	40	return 0;
b35ddf41	41	if (show_only \|\| verbose) {
21666f1a NP	42	enum object_type type = sha1_object_info(sha1, NULL);
	43	printf("%s %s\n", sha1_to_hex(sha1),
	44	(type > 0) ? typename(type) : "unknown");
b35ddf41 MG	45	}
b35ddf41 MG	46	if (!show_only)
691f1a28	47	unlink_or_warn(fullpath);
ba84a797 LT	48	return 0;
	49	}
	50
4454e9cb	51	static int prune_dir(int i, struct strbuf *path)
ba84a797	52	{
4454e9cb JK	53	size_t baselen = path->len;
4454e9cb JK	54	DIR *dir = opendir(path->buf);
ba84a797 LT	55	struct dirent *de;
	56
	57	if (!dir)
	58	return 0;
	59
	60	while ((de = readdir(dir)) != NULL) {
	61	char name[100];
	62	unsigned char sha1[20];
ba84a797	63
8ca12c0d	64	if (is_dot_or_dotdot(de->d_name))
ba84a797	65	continue;
8ca12c0d	66	if (strlen(de->d_name) == 38) {
ba84a797	67	sprintf(name, "%02x", i);
8ca12c0d	68	memcpy(name+2, de->d_name, 39);
ba84a797 LT	69	if (get_sha1_hex(name, sha1) < 0)
	70	break;
	71
	72	/*
	73	* Do we know about this object?
	74	* It must have been reachable
	75	*/
	76	if (lookup_object(sha1))
	77	continue;
	78
4454e9cb JK	79	strbuf_addf(path, "/%s", de->d_name);
	80	prune_object(path->buf, sha1);
	81	strbuf_setlen(path, baselen);
ba84a797 LT	82	continue;
ba84a797 LT	83	}
59556548	84	if (starts_with(de->d_name, "tmp_obj_")) {
4454e9cb JK	85	strbuf_addf(path, "/%s", de->d_name);
	86	prune_tmp_file(path->buf);
	87	strbuf_setlen(path, baselen);
3d32a46b BC	88	continue;
3d32a46b BC	89	}
4454e9cb	90	fprintf(stderr, "bad sha1 file: %s/%s\n", path->buf, de->d_name);
ba84a797	91	}
d34e70d6	92	closedir(dir);
3254d218	93	if (!show_only)
4454e9cb	94	rmdir(path->buf);
ba84a797 LT	95	return 0;
	96	}
	97
	98	static void prune_object_dir(const char *path)
	99	{
4454e9cb JK	100	struct strbuf buf = STRBUF_INIT;
4454e9cb JK	101	size_t baselen;
ba84a797	102	int i;
4454e9cb JK	103
	104	strbuf_addstr(&buf, path);
	105	strbuf_addch(&buf, '/');
	106	baselen = buf.len;
	107
ba84a797	108	for (i = 0; i < 256; i++) {
4454e9cb JK	109	strbuf_addf(&buf, "%02x", i);
	110	prune_dir(i, &buf);
	111	strbuf_setlen(&buf, baselen);
ba84a797 LT	112	}
	113	}
	114
8464010f DST	115	/*
	116	* Write errors (particularly out of space) can result in
	117	* failed temporary packs (and more rarely indexes and other
9517e6b8	118	* files beginning with "tmp_") accumulating in the object
db87e396	119	* and the pack directories.
8464010f	120	*/
db87e396	121	static void remove_temporary_files(const char *path)
8464010f DST	122	{
	123	DIR *dir;
	124	struct dirent *de;
8464010f	125
db87e396	126	dir = opendir(path);
8464010f	127	if (!dir) {
db87e396	128	fprintf(stderr, "Unable to open directory %s\n", path);
8464010f DST	129	return;
8464010f DST	130	}
0e8316cc	131	while ((de = readdir(dir)) != NULL)
59556548	132	if (starts_with(de->d_name, "tmp_"))
4454e9cb	133	prune_tmp_file(mkpath("%s/%s", path, de->d_name));
8464010f DST	134	closedir(dir);
	135	}
	136
a633fca0	137	int cmd_prune(int argc, const char *argv, const char prefix)
ba84a797	138	{
24304816	139	struct rev_info revs;
bf0a59b3	140	struct progress *progress = NULL;
629de472	141	const struct option options[] = {
8f5b7281 NTND	142	OPT__DRY_RUN(&show_only, N_("do not remove, show only")),
	143	OPT__VERBOSE(&verbose, N_("report pruned objects")),
	144	OPT_BOOL(0, "progress", &show_progress, N_("show progress")),
27ec394a JH	145	OPT_EXPIRY_DATE(0, "expire", &expire,
27ec394a JH	146	N_("expire objects older than <time>")),
629de472 MB	147	OPT_END()
629de472 MB	148	};
db87e396	149	char *s;
ba84a797	150
cbf731ed	151	expire = ULONG_MAX;
16157b80	152	save_commit_buffer = 0;
afc711b8	153	check_replace_refs = 0;
a633fca0	154	init_revisions(&revs, prefix);
ba84a797	155
37782920	156	argc = parse_options(argc, argv, prefix, options, prune_usage, 0);
fe308f53 JH	157	while (argc--) {
	158	unsigned char sha1[20];
	159	const char name = argv++;
	160
	161	if (!get_sha1(name, sha1)) {
f7892d18	162	struct object *object = parse_object_or_die(sha1, name);
fe308f53 JH	163	add_pending_object(&revs, object, "");
	164	}
	165	else
	166	die("unrecognized argument: %s", name);
	167	}
bf0a59b3 JK	168
	169	if (show_progress == -1)
	170	show_progress = isatty(2);
	171	if (show_progress)
754dbc43	172	progress = start_progress_delay(_("Checking connectivity"), 0, 0, 2);
bf0a59b3	173
dc347195 NTND	174	mark_reachable_objects(&revs, 1, progress);
dc347195 NTND	175	stop_progress(&progress);
ba84a797 LT	176	prune_object_dir(get_object_directory());
ba84a797 LT	177
af0b4a3b	178	prune_packed_objects(show_only ? PRUNE_PACKED_DRY_RUN : 0);
db87e396	179	remove_temporary_files(get_object_directory());
4e2d094d	180	s = mkpathdup("%s/pack", get_object_directory());
db87e396 BC	181	remove_temporary_files(s);
db87e396 BC	182	free(s);
eab3296c NTND	183
	184	if (is_repository_shallow())
	185	prune_shallow(show_only);
	186
ba84a797 LT	187	return 0;
ba84a797 LT	188	}