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2588f6ed8b
The `prune_shallow()` function wants a full reachability check to be completed before it goes to work, to ensure that all unreachable entries are removed from the shallow file. However, in the upcoming patch we do not even want to go that far. We really only need to remove entries corresponding to pruned commits, i.e. to commits that no longer exist. Let's support that use case. Rather than extending the signature of `prune_shallow()` to accept another Boolean, let's turn it into a bit field and declare constants, for readability. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
168 lines
4.1 KiB
C
168 lines
4.1 KiB
C
#include "cache.h"
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#include "commit.h"
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#include "diff.h"
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#include "revision.h"
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#include "builtin.h"
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#include "reachable.h"
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#include "parse-options.h"
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#include "progress.h"
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#include "object-store.h"
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static const char * const prune_usage[] = {
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N_("git prune [-n] [-v] [--progress] [--expire <time>] [--] [<head>...]"),
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NULL
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};
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static int show_only;
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static int verbose;
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static timestamp_t expire;
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static int show_progress = -1;
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static int prune_tmp_file(const char *fullpath)
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{
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struct stat st;
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if (lstat(fullpath, &st))
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return error("Could not stat '%s'", fullpath);
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if (st.st_mtime > expire)
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return 0;
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if (show_only || verbose)
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printf("Removing stale temporary file %s\n", fullpath);
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if (!show_only)
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unlink_or_warn(fullpath);
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return 0;
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}
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static int prune_object(const struct object_id *oid, const char *fullpath,
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void *data)
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{
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struct stat st;
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/*
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* Do we know about this object?
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* It must have been reachable
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*/
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if (lookup_object(the_repository, oid->hash))
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return 0;
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if (lstat(fullpath, &st)) {
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/* report errors, but do not stop pruning */
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error("Could not stat '%s'", fullpath);
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return 0;
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}
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if (st.st_mtime > expire)
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return 0;
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if (show_only || verbose) {
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enum object_type type = oid_object_info(the_repository, oid,
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NULL);
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printf("%s %s\n", oid_to_hex(oid),
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(type > 0) ? type_name(type) : "unknown");
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}
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if (!show_only)
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unlink_or_warn(fullpath);
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return 0;
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}
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static int prune_cruft(const char *basename, const char *path, void *data)
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{
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if (starts_with(basename, "tmp_obj_"))
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prune_tmp_file(path);
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else
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fprintf(stderr, "bad sha1 file: %s\n", path);
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return 0;
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}
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static int prune_subdir(unsigned int nr, const char *path, void *data)
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{
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if (!show_only)
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rmdir(path);
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return 0;
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}
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/*
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* Write errors (particularly out of space) can result in
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* failed temporary packs (and more rarely indexes and other
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* files beginning with "tmp_") accumulating in the object
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* and the pack directories.
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*/
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static void remove_temporary_files(const char *path)
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{
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DIR *dir;
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struct dirent *de;
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dir = opendir(path);
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if (!dir) {
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fprintf(stderr, "Unable to open directory %s\n", path);
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return;
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}
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while ((de = readdir(dir)) != NULL)
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if (starts_with(de->d_name, "tmp_"))
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prune_tmp_file(mkpath("%s/%s", path, de->d_name));
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closedir(dir);
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}
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int cmd_prune(int argc, const char **argv, const char *prefix)
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{
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struct rev_info revs;
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struct progress *progress = NULL;
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int exclude_promisor_objects = 0;
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const struct option options[] = {
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OPT__DRY_RUN(&show_only, N_("do not remove, show only")),
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OPT__VERBOSE(&verbose, N_("report pruned objects")),
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OPT_BOOL(0, "progress", &show_progress, N_("show progress")),
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OPT_EXPIRY_DATE(0, "expire", &expire,
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N_("expire objects older than <time>")),
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OPT_BOOL(0, "exclude-promisor-objects", &exclude_promisor_objects,
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N_("limit traversal to objects outside promisor packfiles")),
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OPT_END()
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};
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char *s;
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expire = TIME_MAX;
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save_commit_buffer = 0;
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read_replace_refs = 0;
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ref_paranoia = 1;
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init_revisions(&revs, prefix);
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argc = parse_options(argc, argv, prefix, options, prune_usage, 0);
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if (repository_format_precious_objects)
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die(_("cannot prune in a precious-objects repo"));
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while (argc--) {
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struct object_id oid;
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const char *name = *argv++;
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if (!get_oid(name, &oid)) {
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struct object *object = parse_object_or_die(&oid,
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name);
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add_pending_object(&revs, object, "");
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}
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else
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die("unrecognized argument: %s", name);
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}
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if (show_progress == -1)
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show_progress = isatty(2);
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if (show_progress)
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progress = start_delayed_progress(_("Checking connectivity"), 0);
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if (exclude_promisor_objects) {
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fetch_if_missing = 0;
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revs.exclude_promisor_objects = 1;
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}
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mark_reachable_objects(&revs, 1, expire, progress);
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stop_progress(&progress);
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for_each_loose_file_in_objdir(get_object_directory(), prune_object,
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prune_cruft, prune_subdir, NULL);
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prune_packed_objects(show_only ? PRUNE_PACKED_DRY_RUN : 0);
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remove_temporary_files(get_object_directory());
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s = mkpathdup("%s/pack", get_object_directory());
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remove_temporary_files(s);
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free(s);
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if (is_repository_shallow(the_repository))
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prune_shallow(show_only ? PRUNE_SHOW_ONLY : 0);
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return 0;
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}
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