[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 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;
	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, "do not remove, show only"),
		OPT__VERBOSE(&verbose, "report pruned objects"),
		OPT_BOOL(0, "progress", &show_progress, "show progress"),
		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);
	}

	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);
	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;
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;
0e8316cc BC	28	printf("Removing stale temporary file %s\n", fullpath);
0e8316cc BC	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	36	const char *fullpath = mkpath("%s/%s", path, filename);
cbf731ed AS	37	struct stat st;
	38	if (lstat(fullpath, &st))
	39	return error("Could not stat '%s'", fullpath);
	40	if (st.st_mtime > expire)
	41	return 0;
b35ddf41	42	if (show_only \|\| verbose) {
21666f1a NP	43	enum object_type type = sha1_object_info(sha1, NULL);
	44	printf("%s %s\n", sha1_to_hex(sha1),
	45	(type > 0) ? typename(type) : "unknown");
b35ddf41 MG	46	}
b35ddf41 MG	47	if (!show_only)
691f1a28	48	unlink_or_warn(fullpath);
ba84a797 LT	49	return 0;
	50	}
	51
	52	static int prune_dir(int i, char *path)
	53	{
	54	DIR *dir = opendir(path);
	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
	79	prune_object(path, de->d_name, sha1);
	80	continue;
	81	}
3d32a46b BC	82	if (!prefixcmp(de->d_name, "tmp_obj_")) {
	83	prune_tmp_object(path, de->d_name);
	84	continue;
	85	}
ba84a797 LT	86	fprintf(stderr, "bad sha1 file: %s/%s\n", path, de->d_name);
ba84a797 LT	87	}
d34e70d6	88	closedir(dir);
3254d218 NP	89	if (!show_only)
3254d218 NP	90	rmdir(path);
ba84a797 LT	91	return 0;
	92	}
	93
	94	static void prune_object_dir(const char *path)
	95	{
	96	int i;
	97	for (i = 0; i < 256; i++) {
	98	static char dir[4096];
	99	sprintf(dir, "%s/%02x", path, i);
	100	prune_dir(i, dir);
	101	}
	102	}
	103
8464010f DST	104	/*
	105	* Write errors (particularly out of space) can result in
	106	* failed temporary packs (and more rarely indexes and other
9517e6b8	107	* files beginning with "tmp_") accumulating in the object
db87e396	108	* and the pack directories.
8464010f	109	*/
db87e396	110	static void remove_temporary_files(const char *path)
8464010f DST	111	{
	112	DIR *dir;
	113	struct dirent *de;
8464010f	114
db87e396	115	dir = opendir(path);
8464010f	116	if (!dir) {
db87e396	117	fprintf(stderr, "Unable to open directory %s\n", path);
8464010f DST	118	return;
8464010f DST	119	}
0e8316cc BC	120	while ((de = readdir(dir)) != NULL)
0e8316cc BC	121	if (!prefixcmp(de->d_name, "tmp_"))
db87e396	122	prune_tmp_object(path, de->d_name);
8464010f DST	123	closedir(dir);
	124	}
	125
a633fca0	126	int cmd_prune(int argc, const char *argv, const char prefix)
ba84a797	127	{
24304816	128	struct rev_info revs;
bf0a59b3	129	struct progress *progress = NULL;
629de472	130	const struct option options[] = {
e21adb8c	131	OPT__DRY_RUN(&show_only, "do not remove, show only"),
fd03881a	132	OPT__VERBOSE(&verbose, "report pruned objects"),
bf0a59b3	133	OPT_BOOL(0, "progress", &show_progress, "show progress"),
629de472 MB	134	OPT_DATE(0, "expire", &expire,
	135	"expire objects older than <time>"),
	136	OPT_END()
	137	};
db87e396	138	char *s;
ba84a797	139
cbf731ed	140	expire = ULONG_MAX;
16157b80	141	save_commit_buffer = 0;
dae556bd	142	read_replace_refs = 0;
a633fca0	143	init_revisions(&revs, prefix);
ba84a797	144
37782920	145	argc = parse_options(argc, argv, prefix, options, prune_usage, 0);
fe308f53 JH	146	while (argc--) {
	147	unsigned char sha1[20];
	148	const char name = argv++;
	149
	150	if (!get_sha1(name, sha1)) {
	151	struct object *object = parse_object(sha1);
	152	if (!object)
	153	die("bad object: %s", name);
	154	add_pending_object(&revs, object, "");
	155	}
	156	else
	157	die("unrecognized argument: %s", name);
	158	}
bf0a59b3 JK	159
	160	if (show_progress == -1)
	161	show_progress = isatty(2);
	162	if (show_progress)
	163	progress = start_progress_delay("Checking connectivity", 0, 0, 2);
	164
dc347195 NTND	165	mark_reachable_objects(&revs, 1, progress);
dc347195 NTND	166	stop_progress(&progress);
ba84a797 LT	167	prune_object_dir(get_object_directory());
ba84a797 LT	168
2eb53e65	169	prune_packed_objects(show_only);
db87e396 BC	170	remove_temporary_files(get_object_directory());
	171	s = xstrdup(mkpath("%s/pack", get_object_directory()));
	172	remove_temporary_files(s);
	173	free(s);
ba84a797 LT	174	return 0;
ba84a797 LT	175	}