[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[] = {
	"git prune [-n] [-v] [--expire <time>] [--] [<head>...]",
	NULL
};
static int show_only;
static int verbose;
static unsigned long expire;

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;
	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);
	}
	if (!show_only)
		rmdir(path);
	closedir(dir);
	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;
	const struct option options[] = {
		OPT__DRY_RUN(&show_only, "do not remove, show only"),
		OPT__VERBOSE(&verbose, "report pruned objects"),
		OPT_DATE(0, "expire", &expire,
			 "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(sha1);
			if (!object)
				die("bad object: %s", name);
			add_pending_object(&revs, object, "");
		}
		else
			die("unrecognized argument: %s", name);
	}
	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);
	remove_temporary_files(get_object_directory());
	s = xstrdup(mkpath("%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[] = {
b35ddf41	12	"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;
ba84a797	18
db87e396	19	static int prune_tmp_object(const char path, const char filename)
0e8316cc BC	20	{
0e8316cc BC	21	const char *fullpath = mkpath("%s/%s", path, filename);
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;
0e8316cc BC	27	printf("Removing stale temporary file %s\n", fullpath);
0e8316cc BC	28	if (!show_only)
691f1a28	29	unlink_or_warn(fullpath);
0e8316cc BC	30	return 0;
	31	}
	32
ba84a797 LT	33	static int prune_object(char path, const char filename, const unsigned char *sha1)
ba84a797 LT	34	{
f01913e4	35	const char *fullpath = mkpath("%s/%s", path, filename);
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
	51	static int prune_dir(int i, char *path)
	52	{
	53	DIR *dir = opendir(path);
	54	struct dirent *de;
	55
	56	if (!dir)
	57	return 0;
	58
	59	while ((de = readdir(dir)) != NULL) {
	60	char name[100];
	61	unsigned char sha1[20];
ba84a797	62
8ca12c0d	63	if (is_dot_or_dotdot(de->d_name))
ba84a797	64	continue;
8ca12c0d	65	if (strlen(de->d_name) == 38) {
ba84a797	66	sprintf(name, "%02x", i);
8ca12c0d	67	memcpy(name+2, de->d_name, 39);
ba84a797 LT	68	if (get_sha1_hex(name, sha1) < 0)
	69	break;
	70
	71	/*
	72	* Do we know about this object?
	73	* It must have been reachable
	74	*/
	75	if (lookup_object(sha1))
	76	continue;
	77
	78	prune_object(path, de->d_name, sha1);
	79	continue;
	80	}
3d32a46b BC	81	if (!prefixcmp(de->d_name, "tmp_obj_")) {
	82	prune_tmp_object(path, de->d_name);
	83	continue;
	84	}
ba84a797 LT	85	fprintf(stderr, "bad sha1 file: %s/%s\n", path, de->d_name);
ba84a797 LT	86	}
3254d218 NP	87	if (!show_only)
3254d218 NP	88	rmdir(path);
ba84a797 LT	89	closedir(dir);
	90	return 0;
	91	}
	92
	93	static void prune_object_dir(const char *path)
	94	{
	95	int i;
	96	for (i = 0; i < 256; i++) {
	97	static char dir[4096];
	98	sprintf(dir, "%s/%02x", path, i);
	99	prune_dir(i, dir);
	100	}
	101	}
	102
8464010f DST	103	/*
	104	* Write errors (particularly out of space) can result in
	105	* failed temporary packs (and more rarely indexes and other
9517e6b8	106	* files beginning with "tmp_") accumulating in the object
db87e396	107	* and the pack directories.
8464010f	108	*/
db87e396	109	static void remove_temporary_files(const char *path)
8464010f DST	110	{
	111	DIR *dir;
	112	struct dirent *de;
8464010f	113
db87e396	114	dir = opendir(path);
8464010f	115	if (!dir) {
db87e396	116	fprintf(stderr, "Unable to open directory %s\n", path);
8464010f DST	117	return;
8464010f DST	118	}
0e8316cc BC	119	while ((de = readdir(dir)) != NULL)
0e8316cc BC	120	if (!prefixcmp(de->d_name, "tmp_"))
db87e396	121	prune_tmp_object(path, de->d_name);
8464010f DST	122	closedir(dir);
	123	}
	124
a633fca0	125	int cmd_prune(int argc, const char *argv, const char prefix)
ba84a797	126	{
24304816	127	struct rev_info revs;
dc347195	128	struct progress *progress;
629de472	129	const struct option options[] = {
e21adb8c	130	OPT__DRY_RUN(&show_only, "do not remove, show only"),
fd03881a	131	OPT__VERBOSE(&verbose, "report pruned objects"),
629de472 MB	132	OPT_DATE(0, "expire", &expire,
	133	"expire objects older than <time>"),
	134	OPT_END()
	135	};
db87e396	136	char *s;
ba84a797	137
cbf731ed	138	expire = ULONG_MAX;
16157b80	139	save_commit_buffer = 0;
dae556bd	140	read_replace_refs = 0;
a633fca0	141	init_revisions(&revs, prefix);
ba84a797	142
37782920	143	argc = parse_options(argc, argv, prefix, options, prune_usage, 0);
fe308f53 JH	144	while (argc--) {
	145	unsigned char sha1[20];
	146	const char name = argv++;
	147
	148	if (!get_sha1(name, sha1)) {
	149	struct object *object = parse_object(sha1);
	150	if (!object)
	151	die("bad object: %s", name);
	152	add_pending_object(&revs, object, "");
	153	}
	154	else
	155	die("unrecognized argument: %s", name);
	156	}
dc347195 NTND	157	progress = start_progress_delay("Checking connectivity", 0, 0, 2);
	158	mark_reachable_objects(&revs, 1, progress);
	159	stop_progress(&progress);
ba84a797 LT	160	prune_object_dir(get_object_directory());
ba84a797 LT	161
2eb53e65	162	prune_packed_objects(show_only);
db87e396 BC	163	remove_temporary_files(get_object_directory());
	164	s = xstrdup(mkpath("%s/pack", get_object_directory()));
	165	remove_temporary_files(s);
	166	free(s);
ba84a797 LT	167	return 0;
ba84a797 LT	168	}