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ff4056bbc3
Prune should know about broken objects at the tips of refs, so that we can feed them to our traversal rather than ignoring them. It's better for us to abort the operation on the broken object than it is to start deleting objects with an incomplete view of the reachability namespace. Note that for missing objects, aborting is the best we can do. For a badly-named ref, we technically could use its sha1 as a reachability tip. However, the iteration code just feeds us a null sha1, so there would be a reasonable amount of code involved to pass down our wishes. It's not really worth trying to do better, because this is a case that should happen extremely rarely, and the message we provide: fatal: unable to parse object: refs/heads/bogus:name is probably enough to point the user in the right direction. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
154 lines
3.7 KiB
C
154 lines
3.7 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 "dir.h"
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static const char * const prune_usage[] = {
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N_("git prune [-n] [-v] [--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 unsigned long 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 unsigned char *sha1, 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(sha1))
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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 = sha1_object_info(sha1, NULL);
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printf("%s %s\n", sha1_to_hex(sha1),
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(type > 0) ? typename(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(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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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_END()
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};
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char *s;
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expire = ULONG_MAX;
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save_commit_buffer = 0;
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check_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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while (argc--) {
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unsigned char sha1[20];
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const char *name = *argv++;
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if (!get_sha1(name, sha1)) {
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struct object *object = parse_object_or_die(sha1, 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_progress_delay(_("Checking connectivity"), 0, 0, 2);
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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())
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prune_shallow(show_only);
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return 0;
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}
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