[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_object(const char *path, const char *filename)
{
	const char *fullpath = mkpath("%s/%s", path, filename);
	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(char *path, const char *filename, const unsigned char *sha1)
{
	const char *fullpath = mkpath("%s/%s", path, filename);
	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, char *path)
{
	DIR *dir = opendir(path);
	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;

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

static void prune_object_dir(const char *path)
{
	int i;
	for (i = 0; i < 256; i++) {
		static char dir[4096];
		sprintf(dir, "%s/%02x", path, i);
		prune_dir(i, dir);
	}
}

/*
 * 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 (!prefixcmp(de->d_name, "tmp_"))
			prune_tmp_object(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;
	read_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);
	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
db87e396	20	static int prune_tmp_object(const char path, const char filename)
0e8316cc BC	21	{
0e8316cc BC	22	const char *fullpath = mkpath("%s/%s", path, filename);
cbf731ed AS	23	struct stat st;
	24	if (lstat(fullpath, &st))
	25	return error("Could not stat '%s'", fullpath);
	26	if (st.st_mtime > expire)
	27	return 0;
90b29cb7 BC	28	if (show_only \|\| verbose)
90b29cb7 BC	29	printf("Removing stale temporary file %s\n", fullpath);
0e8316cc	30	if (!show_only)
691f1a28	31	unlink_or_warn(fullpath);
0e8316cc BC	32	return 0;
	33	}
	34
ba84a797 LT	35	static int prune_object(char path, const char filename, const unsigned char *sha1)
ba84a797 LT	36	{
f01913e4	37	const char *fullpath = mkpath("%s/%s", path, filename);
cbf731ed AS	38	struct stat st;
	39	if (lstat(fullpath, &st))
	40	return error("Could not stat '%s'", fullpath);
	41	if (st.st_mtime > expire)
	42	return 0;
b35ddf41	43	if (show_only \|\| verbose) {
21666f1a NP	44	enum object_type type = sha1_object_info(sha1, NULL);
	45	printf("%s %s\n", sha1_to_hex(sha1),
	46	(type > 0) ? typename(type) : "unknown");
b35ddf41 MG	47	}
b35ddf41 MG	48	if (!show_only)
691f1a28	49	unlink_or_warn(fullpath);
ba84a797 LT	50	return 0;
	51	}
	52
	53	static int prune_dir(int i, char *path)
	54	{
	55	DIR *dir = opendir(path);
	56	struct dirent *de;
	57
	58	if (!dir)
	59	return 0;
	60
	61	while ((de = readdir(dir)) != NULL) {
	62	char name[100];
	63	unsigned char sha1[20];
ba84a797	64
8ca12c0d	65	if (is_dot_or_dotdot(de->d_name))
ba84a797	66	continue;
8ca12c0d	67	if (strlen(de->d_name) == 38) {
ba84a797	68	sprintf(name, "%02x", i);
8ca12c0d	69	memcpy(name+2, de->d_name, 39);
ba84a797 LT	70	if (get_sha1_hex(name, sha1) < 0)
	71	break;
	72
	73	/*
	74	* Do we know about this object?
	75	* It must have been reachable
	76	*/
	77	if (lookup_object(sha1))
	78	continue;
	79
	80	prune_object(path, de->d_name, sha1);
	81	continue;
	82	}
3d32a46b BC	83	if (!prefixcmp(de->d_name, "tmp_obj_")) {
	84	prune_tmp_object(path, de->d_name);
	85	continue;
	86	}
ba84a797 LT	87	fprintf(stderr, "bad sha1 file: %s/%s\n", path, de->d_name);
ba84a797 LT	88	}
d34e70d6	89	closedir(dir);
3254d218 NP	90	if (!show_only)
3254d218 NP	91	rmdir(path);
ba84a797 LT	92	return 0;
	93	}
	94
	95	static void prune_object_dir(const char *path)
	96	{
	97	int i;
	98	for (i = 0; i < 256; i++) {
	99	static char dir[4096];
	100	sprintf(dir, "%s/%02x", path, i);
	101	prune_dir(i, dir);
	102	}
	103	}
	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 BC	121	while ((de = readdir(dir)) != NULL)
0e8316cc BC	122	if (!prefixcmp(de->d_name, "tmp_"))
db87e396	123	prune_tmp_object(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;
bf0a59b3	130	struct progress *progress = NULL;
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>")),
629de472 MB	137	OPT_END()
629de472 MB	138	};
db87e396	139	char *s;
ba84a797	140
cbf731ed	141	expire = ULONG_MAX;
16157b80	142	save_commit_buffer = 0;
dae556bd	143	read_replace_refs = 0;
a633fca0	144	init_revisions(&revs, prefix);
ba84a797	145
37782920	146	argc = parse_options(argc, argv, prefix, options, prune_usage, 0);
fe308f53 JH	147	while (argc--) {
	148	unsigned char sha1[20];
	149	const char name = argv++;
	150
	151	if (!get_sha1(name, sha1)) {
f7892d18	152	struct object *object = parse_object_or_die(sha1, name);
fe308f53 JH	153	add_pending_object(&revs, object, "");
	154	}
	155	else
	156	die("unrecognized argument: %s", name);
	157	}
bf0a59b3 JK	158
	159	if (show_progress == -1)
	160	show_progress = isatty(2);
	161	if (show_progress)
	162	progress = start_progress_delay("Checking connectivity", 0, 0, 2);
	163
dc347195 NTND	164	mark_reachable_objects(&revs, 1, progress);
dc347195 NTND	165	stop_progress(&progress);
ba84a797 LT	166	prune_object_dir(get_object_directory());
ba84a797 LT	167
af0b4a3b	168	prune_packed_objects(show_only ? PRUNE_PACKED_DRY_RUN : 0);
db87e396	169	remove_temporary_files(get_object_directory());
4e2d094d	170	s = mkpathdup("%s/pack", get_object_directory());
db87e396 BC	171	remove_temporary_files(s);
db87e396 BC	172	free(s);
ba84a797 LT	173	return 0;
ba84a797 LT	174	}