| 1 | #define DISABLE_SIGN_COMPARE_WARNINGS |
| 2 | |
| 3 | #include "builtin.h" |
| 4 | #include "commit.h" |
| 5 | #include "diff.h" |
| 6 | #include "dir.h" |
| 7 | #include "environment.h" |
| 8 | #include "gettext.h" |
| 9 | #include "hex.h" |
| 10 | #include "revision.h" |
| 11 | #include "reachable.h" |
| 12 | #include "parse-options.h" |
| 13 | #include "path.h" |
| 14 | #include "progress.h" |
| 15 | #include "prune-packed.h" |
| 16 | #include "replace-object.h" |
| 17 | #include "object-file.h" |
| 18 | #include "object-name.h" |
| 19 | #include "odb.h" |
| 20 | #include "shallow.h" |
| 21 | |
| 22 | static const char * const prune_usage[] = { |
| 23 | N_("git prune [-n] [-v] [--progress] [--expire <time>] [--] [<head>...]"), |
| 24 | NULL |
| 25 | }; |
| 26 | static int show_only; |
| 27 | static int verbose; |
| 28 | static timestamp_t expire; |
| 29 | static int show_progress = -1; |
| 30 | |
| 31 | static int prune_tmp_file(const char *fullpath) |
| 32 | { |
| 33 | struct stat st; |
| 34 | if (lstat(fullpath, &st)) |
| 35 | return error("Could not stat '%s'", fullpath); |
| 36 | if (st.st_mtime > expire) |
| 37 | return 0; |
| 38 | if (S_ISDIR(st.st_mode)) { |
| 39 | if (show_only || verbose) |
| 40 | printf("Removing stale temporary directory %s\n", fullpath); |
| 41 | if (!show_only) { |
| 42 | struct strbuf remove_dir_buf = STRBUF_INIT; |
| 43 | |
| 44 | strbuf_addstr(&remove_dir_buf, fullpath); |
| 45 | remove_dir_recursively(&remove_dir_buf, 0); |
| 46 | strbuf_release(&remove_dir_buf); |
| 47 | } |
| 48 | } else { |
| 49 | if (show_only || verbose) |
| 50 | printf("Removing stale temporary file %s\n", fullpath); |
| 51 | if (!show_only) |
| 52 | unlink_or_warn(fullpath); |
| 53 | } |
| 54 | return 0; |
| 55 | } |
| 56 | |
| 57 | static void perform_reachability_traversal(struct rev_info *revs) |
| 58 | { |
| 59 | static int initialized; |
| 60 | struct progress *progress = NULL; |
| 61 | |
| 62 | if (initialized) |
| 63 | return; |
| 64 | |
| 65 | if (show_progress) |
| 66 | progress = start_delayed_progress(revs->repo, |
| 67 | _("Checking connectivity"), 0); |
| 68 | mark_reachable_objects(revs, 1, expire, progress); |
| 69 | stop_progress(&progress); |
| 70 | initialized = 1; |
| 71 | } |
| 72 | |
| 73 | static int is_object_reachable(const struct object_id *oid, |
| 74 | struct rev_info *revs) |
| 75 | { |
| 76 | struct object *obj; |
| 77 | |
| 78 | perform_reachability_traversal(revs); |
| 79 | |
| 80 | obj = lookup_object(revs->repo, oid); |
| 81 | return obj && (obj->flags & SEEN); |
| 82 | } |
| 83 | |
| 84 | static int prune_object(const struct object_id *oid, const char *fullpath, |
| 85 | void *data) |
| 86 | { |
| 87 | struct rev_info *revs = data; |
| 88 | struct stat st; |
| 89 | |
| 90 | if (is_object_reachable(oid, revs)) |
| 91 | return 0; |
| 92 | |
| 93 | if (lstat(fullpath, &st)) { |
| 94 | /* report errors, but do not stop pruning */ |
| 95 | error("Could not stat '%s'", fullpath); |
| 96 | return 0; |
| 97 | } |
| 98 | if (st.st_mtime > expire) |
| 99 | return 0; |
| 100 | if (show_only || verbose) { |
| 101 | enum object_type type = |
| 102 | odb_read_object_info(revs->repo->objects, oid, NULL); |
| 103 | printf("%s %s\n", oid_to_hex(oid), |
| 104 | (type > 0) ? type_name(type) : "unknown"); |
| 105 | } |
| 106 | if (!show_only) |
| 107 | unlink_or_warn(fullpath); |
| 108 | return 0; |
| 109 | } |
| 110 | |
| 111 | static int prune_cruft(const char *basename, const char *path, |
| 112 | void *data UNUSED) |
| 113 | { |
| 114 | if (starts_with(basename, "tmp_obj_")) |
| 115 | prune_tmp_file(path); |
| 116 | else |
| 117 | fprintf(stderr, "bad sha1 file: %s\n", path); |
| 118 | return 0; |
| 119 | } |
| 120 | |
| 121 | static int prune_subdir(unsigned int nr UNUSED, const char *path, |
| 122 | void *data UNUSED) |
| 123 | { |
| 124 | if (!show_only) |
| 125 | rmdir(path); |
| 126 | return 0; |
| 127 | } |
| 128 | |
| 129 | /* |
| 130 | * Write errors (particularly out of space) can result in |
| 131 | * failed temporary packs (and more rarely indexes and other |
| 132 | * files beginning with "tmp_") accumulating in the object |
| 133 | * and the pack directories. |
| 134 | */ |
| 135 | static void remove_temporary_files(const char *path) |
| 136 | { |
| 137 | DIR *dir; |
| 138 | struct dirent *de; |
| 139 | |
| 140 | dir = opendir(path); |
| 141 | if (!dir) { |
| 142 | if (errno != ENOENT) |
| 143 | fprintf(stderr, "Unable to open directory %s: %s\n", |
| 144 | path, strerror(errno)); |
| 145 | return; |
| 146 | } |
| 147 | while ((de = readdir(dir)) != NULL) |
| 148 | if (starts_with(de->d_name, "tmp_")) |
| 149 | prune_tmp_file(mkpath("%s/%s", path, de->d_name)); |
| 150 | closedir(dir); |
| 151 | } |
| 152 | |
| 153 | int cmd_prune(int argc, |
| 154 | const char **argv, |
| 155 | const char *prefix, |
| 156 | struct repository *repo) |
| 157 | { |
| 158 | struct rev_info revs; |
| 159 | int exclude_promisor_objects = 0; |
| 160 | const struct option options[] = { |
| 161 | OPT__DRY_RUN(&show_only, N_("do not remove, show only")), |
| 162 | OPT__VERBOSE(&verbose, N_("report pruned objects")), |
| 163 | OPT_BOOL(0, "progress", &show_progress, N_("show progress")), |
| 164 | OPT_EXPIRY_DATE(0, "expire", &expire, |
| 165 | N_("expire objects older than <time>")), |
| 166 | OPT_BOOL(0, "exclude-promisor-objects", &exclude_promisor_objects, |
| 167 | N_("limit traversal to objects outside promisor packfiles")), |
| 168 | OPT_END() |
| 169 | }; |
| 170 | char *s; |
| 171 | |
| 172 | expire = TIME_MAX; |
| 173 | save_commit_buffer = 0; |
| 174 | disable_replace_refs(); |
| 175 | |
| 176 | argc = parse_options(argc, argv, prefix, options, prune_usage, 0); |
| 177 | |
| 178 | repo_init_revisions(repo, &revs, prefix); |
| 179 | if (repo->repository_format_precious_objects) |
| 180 | die(_("cannot prune in a precious-objects repo")); |
| 181 | |
| 182 | while (argc--) { |
| 183 | struct object_id oid; |
| 184 | const char *name = *argv++; |
| 185 | |
| 186 | if (!repo_get_oid(repo, name, &oid)) { |
| 187 | struct object *object = parse_object_or_die(repo, &oid, name); |
| 188 | add_pending_object(&revs, object, ""); |
| 189 | } |
| 190 | else |
| 191 | die("unrecognized argument: %s", name); |
| 192 | } |
| 193 | |
| 194 | if (show_progress == -1) |
| 195 | show_progress = isatty(2); |
| 196 | if (exclude_promisor_objects) { |
| 197 | fetch_if_missing = 0; |
| 198 | revs.exclude_promisor_objects = 1; |
| 199 | } |
| 200 | |
| 201 | for_each_loose_file_in_source(repo->objects->sources, |
| 202 | prune_object, prune_cruft, prune_subdir, &revs); |
| 203 | |
| 204 | prune_packed_objects(show_only ? PRUNE_PACKED_DRY_RUN : 0); |
| 205 | remove_temporary_files(repo_get_object_directory(repo)); |
| 206 | s = mkpathdup("%s/pack", repo_get_object_directory(repo)); |
| 207 | remove_temporary_files(s); |
| 208 | free(s); |
| 209 | |
| 210 | if (is_repository_shallow(repo)) { |
| 211 | perform_reachability_traversal(&revs); |
| 212 | prune_shallow(show_only ? PRUNE_SHOW_ONLY : 0); |
| 213 | } |
| 214 | |
| 215 | release_revisions(&revs); |
| 216 | return 0; |
| 217 | } |