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| author | Junio C Hamano <gitster@pobox.com> | 2010-03-10 15:25:18 -0800 |
|---|---|---|
| committer | Junio C Hamano <gitster@pobox.com> | 2010-03-10 15:25:18 -0800 |
| commit | 2e0e8b68e3ba8ea87f001c45c78f9b7ce549c61f (patch) | |
| tree | 12363fe88e40f042c24583e829a696505fcb9b7c /builtin/prune.c | |
| parent | e007240cb940811a6e075d35f5c3a93a44c54f5a (diff) | |
| parent | 81b50f3ce40bfdd66e5d967bf82be001039a9a98 (diff) | |
| download | git-2e0e8b68e3ba8ea87f001c45c78f9b7ce549c61f.tar.gz | |
Merge branch 'lt/deepen-builtin-source'
* lt/deepen-builtin-source:
Move 'builtin-*' into a 'builtin/' subdirectory
Conflicts:
Makefile
Diffstat (limited to 'builtin/prune.c')
| -rw-r--r-- | builtin/prune.c | 166 |
1 files changed, 166 insertions, 0 deletions
diff --git a/builtin/prune.c b/builtin/prune.c new file mode 100644 index 0000000000..81f915ec31 --- /dev/null +++ b/builtin/prune.c @@ -0,0 +1,166 @@ +#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); + 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; + 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; + + 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); + } + 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; +} |