f4609b896f
This also bumps the stable nixpkgs to 20.09 as of 2020-11-21, because there is some breakage in the git build related to the netrc credentials helper which someone has taken care of in nixpkgs. The stable channel is not used for anything other than git, so this should be fine. Change-Id: I3575a19dab09e1e9556cf8231d717de9890484fb
189 lines
4.6 KiB
C
189 lines
4.6 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 "prune-packed.h"
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#include "object-store.h"
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#include "shallow.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 void perform_reachability_traversal(struct rev_info *revs)
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{
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static int initialized;
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struct progress *progress = NULL;
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if (initialized)
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return;
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if (show_progress)
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progress = start_delayed_progress(_("Checking connectivity"), 0);
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mark_reachable_objects(revs, 1, expire, progress);
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stop_progress(&progress);
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initialized = 1;
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}
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static int is_object_reachable(const struct object_id *oid,
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struct rev_info *revs)
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{
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struct object *obj;
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perform_reachability_traversal(revs);
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obj = lookup_object(the_repository, oid);
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return obj && (obj->flags & SEEN);
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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 rev_info *revs = data;
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struct stat st;
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if (is_object_reachable(oid, revs))
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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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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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repo_init_revisions(the_repository, &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 (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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for_each_loose_file_in_objdir(get_object_directory(), prune_object,
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prune_cruft, prune_subdir, &revs);
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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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perform_reachability_traversal(&revs);
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prune_shallow(show_only ? PRUNE_SHOW_ONLY : 0);
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}
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return 0;
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}
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