Merge branch 'dl/doc-stash-remove-mention-of-reflog'
[git.git] / builtin / prune.c
blobfd9acc722247ece74483f6a2a7674a4c5f712570
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 "prune-packed.h"
10 #include "object-store.h"
12 static const char * const prune_usage[] = {
13 N_("git prune [-n] [-v] [--progress] [--expire <time>] [--] [<head>...]"),
14 NULL
16 static int show_only;
17 static int verbose;
18 static timestamp_t expire;
19 static int show_progress = -1;
21 static int prune_tmp_file(const char *fullpath)
23 struct stat st;
24 if (lstat(fullpath, &st))
25 return error("Could not stat '%s'", fullpath);
26 if (st.st_mtime > expire)
27 return 0;
28 if (show_only || verbose)
29 printf("Removing stale temporary file %s\n", fullpath);
30 if (!show_only)
31 unlink_or_warn(fullpath);
32 return 0;
35 static void perform_reachability_traversal(struct rev_info *revs)
37 static int initialized;
38 struct progress *progress = NULL;
40 if (initialized)
41 return;
43 if (show_progress)
44 progress = start_delayed_progress(_("Checking connectivity"), 0);
45 mark_reachable_objects(revs, 1, expire, progress);
46 stop_progress(&progress);
47 initialized = 1;
50 static int is_object_reachable(const struct object_id *oid,
51 struct rev_info *revs)
53 struct object *obj;
55 perform_reachability_traversal(revs);
57 obj = lookup_object(the_repository, oid);
58 return obj && (obj->flags & SEEN);
61 static int prune_object(const struct object_id *oid, const char *fullpath,
62 void *data)
64 struct rev_info *revs = data;
65 struct stat st;
67 if (is_object_reachable(oid, revs))
68 return 0;
70 if (lstat(fullpath, &st)) {
71 /* report errors, but do not stop pruning */
72 error("Could not stat '%s'", fullpath);
73 return 0;
75 if (st.st_mtime > expire)
76 return 0;
77 if (show_only || verbose) {
78 enum object_type type = oid_object_info(the_repository, oid,
79 NULL);
80 printf("%s %s\n", oid_to_hex(oid),
81 (type > 0) ? type_name(type) : "unknown");
83 if (!show_only)
84 unlink_or_warn(fullpath);
85 return 0;
88 static int prune_cruft(const char *basename, const char *path, void *data)
90 if (starts_with(basename, "tmp_obj_"))
91 prune_tmp_file(path);
92 else
93 fprintf(stderr, "bad sha1 file: %s\n", path);
94 return 0;
97 static int prune_subdir(unsigned int nr, const char *path, void *data)
99 if (!show_only)
100 rmdir(path);
101 return 0;
105 * Write errors (particularly out of space) can result in
106 * failed temporary packs (and more rarely indexes and other
107 * files beginning with "tmp_") accumulating in the object
108 * and the pack directories.
110 static void remove_temporary_files(const char *path)
112 DIR *dir;
113 struct dirent *de;
115 dir = opendir(path);
116 if (!dir) {
117 fprintf(stderr, "Unable to open directory %s\n", path);
118 return;
120 while ((de = readdir(dir)) != NULL)
121 if (starts_with(de->d_name, "tmp_"))
122 prune_tmp_file(mkpath("%s/%s", path, de->d_name));
123 closedir(dir);
126 int cmd_prune(int argc, const char **argv, const char *prefix)
128 struct rev_info revs;
129 int exclude_promisor_objects = 0;
130 const struct option options[] = {
131 OPT__DRY_RUN(&show_only, N_("do not remove, show only")),
132 OPT__VERBOSE(&verbose, N_("report pruned objects")),
133 OPT_BOOL(0, "progress", &show_progress, N_("show progress")),
134 OPT_EXPIRY_DATE(0, "expire", &expire,
135 N_("expire objects older than <time>")),
136 OPT_BOOL(0, "exclude-promisor-objects", &exclude_promisor_objects,
137 N_("limit traversal to objects outside promisor packfiles")),
138 OPT_END()
140 char *s;
142 expire = TIME_MAX;
143 save_commit_buffer = 0;
144 read_replace_refs = 0;
145 ref_paranoia = 1;
146 repo_init_revisions(the_repository, &revs, prefix);
148 argc = parse_options(argc, argv, prefix, options, prune_usage, 0);
150 if (repository_format_precious_objects)
151 die(_("cannot prune in a precious-objects repo"));
153 while (argc--) {
154 struct object_id oid;
155 const char *name = *argv++;
157 if (!get_oid(name, &oid)) {
158 struct object *object = parse_object_or_die(&oid,
159 name);
160 add_pending_object(&revs, object, "");
162 else
163 die("unrecognized argument: %s", name);
166 if (show_progress == -1)
167 show_progress = isatty(2);
168 if (exclude_promisor_objects) {
169 fetch_if_missing = 0;
170 revs.exclude_promisor_objects = 1;
173 for_each_loose_file_in_objdir(get_object_directory(), prune_object,
174 prune_cruft, prune_subdir, &revs);
176 prune_packed_objects(show_only ? PRUNE_PACKED_DRY_RUN : 0);
177 remove_temporary_files(get_object_directory());
178 s = mkpathdup("%s/pack", get_object_directory());
179 remove_temporary_files(s);
180 free(s);
182 if (is_repository_shallow(the_repository)) {
183 perform_reachability_traversal(&revs);
184 prune_shallow(show_only ? PRUNE_SHOW_ONLY : 0);
187 return 0;