[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 "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);
	if (expire) {
		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);
	if (expire) {
		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;
	const struct option options[] = {
		OPT_BOOLEAN('n', NULL, &show_only,
			    "do not remove, show only"),
		OPT_BOOLEAN('v', NULL, &verbose,
			"report pruned objects"),
		OPT_DATE(0, "expire", &expire,
			 "expire objects older than <time>"),
		OPT_END()
	};
	char *s;

	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);
	}
	mark_reachable_objects(&revs, 1);
	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"
8ca12c0d	8	#include "dir.h"
ba84a797	9
629de472	10	static const char * const prune_usage[] = {
b35ddf41	11	"git prune [-n] [-v] [--expire <time>] [--] [<head>...]",
629de472 MB	12	NULL
629de472 MB	13	};
96f1e58f	14	static int show_only;
b35ddf41	15	static int verbose;
f01913e4	16	static unsigned long expire;
ba84a797	17
db87e396	18	static int prune_tmp_object(const char path, const char filename)
0e8316cc BC	19	{
	20	const char *fullpath = mkpath("%s/%s", path, filename);
	21	if (expire) {
	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;
	27	}
	28	printf("Removing stale temporary file %s\n", fullpath);
	29	if (!show_only)
691f1a28	30	unlink_or_warn(fullpath);
0e8316cc BC	31	return 0;
	32	}
	33
ba84a797 LT	34	static int prune_object(char path, const char filename, const unsigned char *sha1)
ba84a797 LT	35	{
f01913e4 JS	36	const char *fullpath = mkpath("%s/%s", path, filename);
	37	if (expire) {
	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;
	43	}
b35ddf41	44	if (show_only \|\| verbose) {
21666f1a NP	45	enum object_type type = sha1_object_info(sha1, NULL);
	46	printf("%s %s\n", sha1_to_hex(sha1),
	47	(type > 0) ? typename(type) : "unknown");
b35ddf41 MG	48	}
b35ddf41 MG	49	if (!show_only)
691f1a28	50	unlink_or_warn(fullpath);
ba84a797 LT	51	return 0;
	52	}
	53
	54	static int prune_dir(int i, char *path)
	55	{
	56	DIR *dir = opendir(path);
	57	struct dirent *de;
	58
	59	if (!dir)
	60	return 0;
	61
	62	while ((de = readdir(dir)) != NULL) {
	63	char name[100];
	64	unsigned char sha1[20];
ba84a797	65
8ca12c0d	66	if (is_dot_or_dotdot(de->d_name))
ba84a797	67	continue;
8ca12c0d	68	if (strlen(de->d_name) == 38) {
ba84a797	69	sprintf(name, "%02x", i);
8ca12c0d	70	memcpy(name+2, de->d_name, 39);
ba84a797 LT	71	if (get_sha1_hex(name, sha1) < 0)
	72	break;
	73
	74	/*
	75	* Do we know about this object?
	76	* It must have been reachable
	77	*/
	78	if (lookup_object(sha1))
	79	continue;
	80
	81	prune_object(path, de->d_name, sha1);
	82	continue;
	83	}
3d32a46b BC	84	if (!prefixcmp(de->d_name, "tmp_obj_")) {
	85	prune_tmp_object(path, de->d_name);
	86	continue;
	87	}
ba84a797 LT	88	fprintf(stderr, "bad sha1 file: %s/%s\n", path, de->d_name);
ba84a797 LT	89	}
3254d218 NP	90	if (!show_only)
3254d218 NP	91	rmdir(path);
ba84a797 LT	92	closedir(dir);
	93	return 0;
	94	}
	95
	96	static void prune_object_dir(const char *path)
	97	{
	98	int i;
	99	for (i = 0; i < 256; i++) {
	100	static char dir[4096];
	101	sprintf(dir, "%s/%02x", path, i);
	102	prune_dir(i, dir);
	103	}
	104	}
	105
8464010f DST	106	/*
	107	* Write errors (particularly out of space) can result in
	108	* failed temporary packs (and more rarely indexes and other
9517e6b8	109	* files beginning with "tmp_") accumulating in the object
db87e396	110	* and the pack directories.
8464010f	111	*/
db87e396	112	static void remove_temporary_files(const char *path)
8464010f DST	113	{
	114	DIR *dir;
	115	struct dirent *de;
8464010f	116
db87e396	117	dir = opendir(path);
8464010f	118	if (!dir) {
db87e396	119	fprintf(stderr, "Unable to open directory %s\n", path);
8464010f DST	120	return;
8464010f DST	121	}
0e8316cc BC	122	while ((de = readdir(dir)) != NULL)
0e8316cc BC	123	if (!prefixcmp(de->d_name, "tmp_"))
db87e396	124	prune_tmp_object(path, de->d_name);
8464010f DST	125	closedir(dir);
	126	}
	127
a633fca0	128	int cmd_prune(int argc, const char *argv, const char prefix)
ba84a797	129	{
24304816	130	struct rev_info revs;
629de472 MB	131	const struct option options[] = {
	132	OPT_BOOLEAN('n', NULL, &show_only,
	133	"do not remove, show only"),
b35ddf41 MG	134	OPT_BOOLEAN('v', NULL, &verbose,
b35ddf41 MG	135	"report pruned objects"),
629de472 MB	136	OPT_DATE(0, "expire", &expire,
	137	"expire objects older than <time>"),
	138	OPT_END()
	139	};
db87e396	140	char *s;
ba84a797	141
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)) {
	152	struct object *object = parse_object(sha1);
	153	if (!object)
	154	die("bad object: %s", name);
	155	add_pending_object(&revs, object, "");
	156	}
	157	else
	158	die("unrecognized argument: %s", name);
	159	}
629de472	160	mark_reachable_objects(&revs, 1);
ba84a797 LT	161	prune_object_dir(get_object_directory());
ba84a797 LT	162
2eb53e65	163	prune_packed_objects(show_only);
db87e396 BC	164	remove_temporary_files(get_object_directory());
	165	s = xstrdup(mkpath("%s/pack", get_object_directory()));
	166	remove_temporary_files(s);
	167	free(s);
ba84a797 LT	168	return 0;
ba84a797 LT	169	}