diff options
Diffstat (limited to 'third_party/git/builtin/prune.c')
| -rw-r--r-- | third_party/git/builtin/prune.c | 187 |
1 files changed, 187 insertions, 0 deletions
diff --git a/third_party/git/builtin/prune.c b/third_party/git/builtin/prune.c new file mode 100644 index 000000000000..2b76872ad220 --- /dev/null +++ b/third_party/git/builtin/prune.c @@ -0,0 +1,187 @@ +#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 "object-store.h" + +static const char * const prune_usage[] = { + N_("git prune [-n] [-v] [--progress] [--expire <time>] [--] [<head>...]"), + NULL +}; +static int show_only; +static int verbose; +static timestamp_t expire; +static int show_progress = -1; + +static int prune_tmp_file(const char *fullpath) +{ + 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 void perform_reachability_traversal(struct rev_info *revs) +{ + static int initialized; + struct progress *progress = NULL; + + if (initialized) + return; + + if (show_progress) + progress = start_delayed_progress(_("Checking connectivity"), 0); + mark_reachable_objects(revs, 1, expire, progress); + stop_progress(&progress); + initialized = 1; +} + +static int is_object_reachable(const struct object_id *oid, + struct rev_info *revs) +{ + struct object *obj; + + perform_reachability_traversal(revs); + + obj = lookup_object(the_repository, oid); + return obj && (obj->flags & SEEN); +} + +static int prune_object(const struct object_id *oid, const char *fullpath, + void *data) +{ + struct rev_info *revs = data; + struct stat st; + + if (is_object_reachable(oid, revs)) + return 0; + + if (lstat(fullpath, &st)) { + /* report errors, but do not stop pruning */ + error("Could not stat '%s'", fullpath); + return 0; + } + if (st.st_mtime > expire) + return 0; + if (show_only || verbose) { + enum object_type type = oid_object_info(the_repository, oid, + NULL); + printf("%s %s\n", oid_to_hex(oid), + (type > 0) ? type_name(type) : "unknown"); + } + if (!show_only) + unlink_or_warn(fullpath); + return 0; +} + +static int prune_cruft(const char *basename, const char *path, void *data) +{ + if (starts_with(basename, "tmp_obj_")) + prune_tmp_file(path); + else + fprintf(stderr, "bad sha1 file: %s\n", path); + return 0; +} + +static int prune_subdir(unsigned int nr, const char *path, void *data) +{ + if (!show_only) + rmdir(path); + return 0; +} + +/* + * 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 (starts_with(de->d_name, "tmp_")) + prune_tmp_file(mkpath("%s/%s", path, de->d_name)); + closedir(dir); +} + +int cmd_prune(int argc, const char **argv, const char *prefix) +{ + struct rev_info revs; + int exclude_promisor_objects = 0; + 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_BOOL(0, "exclude-promisor-objects", &exclude_promisor_objects, + N_("limit traversal to objects outside promisor packfiles")), + OPT_END() + }; + char *s; + + expire = TIME_MAX; + save_commit_buffer = 0; + read_replace_refs = 0; + ref_paranoia = 1; + repo_init_revisions(the_repository, &revs, prefix); + + argc = parse_options(argc, argv, prefix, options, prune_usage, 0); + + if (repository_format_precious_objects) + die(_("cannot prune in a precious-objects repo")); + + while (argc--) { + struct object_id oid; + const char *name = *argv++; + + if (!get_oid(name, &oid)) { + struct object *object = parse_object_or_die(&oid, + name); + add_pending_object(&revs, object, ""); + } + else + die("unrecognized argument: %s", name); + } + + if (show_progress == -1) + show_progress = isatty(2); + if (exclude_promisor_objects) { + fetch_if_missing = 0; + revs.exclude_promisor_objects = 1; + } + + for_each_loose_file_in_objdir(get_object_directory(), prune_object, + prune_cruft, prune_subdir, &revs); + + 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); + + if (is_repository_shallow(the_repository)) { + perform_reachability_traversal(&revs); + prune_shallow(show_only ? PRUNE_SHOW_ONLY : 0); + } + + return 0; +} |