Andrew's git - gitweb.git/blob

   1#include "cache.h"
   2#include "commit.h"
   3#include "diff.h"
   4#include "revision.h"
   5#include "builtin.h"
   6#include "reachable.h"
   7#include "parse-options.h"
   8#include "progress.h"
   9#include "object-store.h"
  10
  11static const char * const prune_usage[] = {
  12        N_("git prune [-n] [-v] [--progress] [--expire <time>] [--] [<head>...]"),
  13        NULL
  14};
  15static int show_only;
  16static int verbose;
  17static timestamp_t expire;
  18static int show_progress = -1;
  19
  20static int prune_tmp_file(const char *fullpath)
  21{
  22        struct stat st;
  23        if (lstat(fullpath, &st))
  24                return error("Could not stat '%s'", fullpath);
  25        if (st.st_mtime > expire)
  26                return 0;
  27        if (show_only || verbose)
  28                printf("Removing stale temporary file %s\n", fullpath);
  29        if (!show_only)
  30                unlink_or_warn(fullpath);
  31        return 0;
  32}
  33
  34static int prune_object(const struct object_id *oid, const char *fullpath,
  35                        void *data)
  36{
  37        struct stat st;
  38
  39        /*
  40         * Do we know about this object?
  41         * It must have been reachable
  42         */
  43        if (lookup_object(the_repository, oid->hash))
  44                return 0;
  45
  46        if (lstat(fullpath, &st)) {
  47                /* report errors, but do not stop pruning */
  48                error("Could not stat '%s'", fullpath);
  49                return 0;
  50        }
  51        if (st.st_mtime > expire)
  52                return 0;
  53        if (show_only || verbose) {
  54                enum object_type type = oid_object_info(the_repository, oid,
  55                                                        NULL);
  56                printf("%s %s\n", oid_to_hex(oid),
  57                       (type > 0) ? type_name(type) : "unknown");
  58        }
  59        if (!show_only)
  60                unlink_or_warn(fullpath);
  61        return 0;
  62}
  63
  64static int prune_cruft(const char *basename, const char *path, void *data)
  65{
  66        if (starts_with(basename, "tmp_obj_"))
  67                prune_tmp_file(path);
  68        else
  69                fprintf(stderr, "bad sha1 file: %s\n", path);
  70        return 0;
  71}
  72
  73static int prune_subdir(unsigned int nr, const char *path, void *data)
  74{
  75        if (!show_only)
  76                rmdir(path);
  77        return 0;
  78}
  79
  80/*
  81 * Write errors (particularly out of space) can result in
  82 * failed temporary packs (and more rarely indexes and other
  83 * files beginning with "tmp_") accumulating in the object
  84 * and the pack directories.
  85 */
  86static void remove_temporary_files(const char *path)
  87{
  88        DIR *dir;
  89        struct dirent *de;
  90
  91        dir = opendir(path);
  92        if (!dir) {
  93                fprintf(stderr, "Unable to open directory %s\n", path);
  94                return;
  95        }
  96        while ((de = readdir(dir)) != NULL)
  97                if (starts_with(de->d_name, "tmp_"))
  98                        prune_tmp_file(mkpath("%s/%s", path, de->d_name));
  99        closedir(dir);
 100}
 101
 102int cmd_prune(int argc, const char **argv, const char *prefix)
 103{
 104        struct rev_info revs;
 105        struct progress *progress = NULL;
 106        int exclude_promisor_objects = 0;
 107        const struct option options[] = {
 108                OPT__DRY_RUN(&show_only, N_("do not remove, show only")),
 109                OPT__VERBOSE(&verbose, N_("report pruned objects")),
 110                OPT_BOOL(0, "progress", &show_progress, N_("show progress")),
 111                OPT_EXPIRY_DATE(0, "expire", &expire,
 112                                N_("expire objects older than <time>")),
 113                OPT_BOOL(0, "exclude-promisor-objects", &exclude_promisor_objects,
 114                         N_("limit traversal to objects outside promisor packfiles")),
 115                OPT_END()
 116        };
 117        char *s;
 118
 119        expire = TIME_MAX;
 120        save_commit_buffer = 0;
 121        check_replace_refs = 0;
 122        ref_paranoia = 1;
 123        init_revisions(&revs, prefix);
 124
 125        argc = parse_options(argc, argv, prefix, options, prune_usage, 0);
 126
 127        if (repository_format_precious_objects)
 128                die(_("cannot prune in a precious-objects repo"));
 129
 130        while (argc--) {
 131                struct object_id oid;
 132                const char *name = *argv++;
 133
 134                if (!get_oid(name, &oid)) {
 135                        struct object *object = parse_object_or_die(&oid,
 136                                                                    name);
 137                        add_pending_object(&revs, object, "");
 138                }
 139                else
 140                        die("unrecognized argument: %s", name);
 141        }
 142
 143        if (show_progress == -1)
 144                show_progress = isatty(2);
 145        if (show_progress)
 146                progress = start_delayed_progress(_("Checking connectivity"), 0);
 147        if (exclude_promisor_objects) {
 148                fetch_if_missing = 0;
 149                revs.exclude_promisor_objects = 1;
 150        }
 151
 152        mark_reachable_objects(&revs, 1, expire, progress);
 153        stop_progress(&progress);
 154        for_each_loose_file_in_objdir(get_object_directory(), prune_object,
 155                                      prune_cruft, prune_subdir, NULL);
 156
 157        prune_packed_objects(show_only ? PRUNE_PACKED_DRY_RUN : 0);
 158        remove_temporary_files(get_object_directory());
 159        s = mkpathdup("%s/pack", get_object_directory());
 160        remove_temporary_files(s);
 161        free(s);
 162
 163        if (is_repository_shallow(the_repository))
 164                prune_shallow(show_only);
 165
 166        return 0;
 167}