introduce "extensions" form of core.repositoryformatversion
[git/git.git] / builtin / prune.c
CommitLineData
ba84a797 1#include "cache.h"
ba84a797 2#include "commit.h"
ba84a797
LT
3#include "diff.h"
4#include "revision.h"
5#include "builtin.h"
94421474 6#include "reachable.h"
629de472 7#include "parse-options.h"
dc347195 8#include "progress.h"
8ca12c0d 9#include "dir.h"
ba84a797 10
629de472 11static const char * const prune_usage[] = {
8f5b7281 12 N_("git prune [-n] [-v] [--expire <time>] [--] [<head>...]"),
629de472
MB
13 NULL
14};
96f1e58f 15static int show_only;
b35ddf41 16static int verbose;
f01913e4 17static unsigned long expire;
bf0a59b3 18static int show_progress = -1;
ba84a797 19
4454e9cb 20static int prune_tmp_file(const char *fullpath)
0e8316cc 21{
cbf731ed
AS
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;
90b29cb7
BC
27 if (show_only || verbose)
28 printf("Removing stale temporary file %s\n", fullpath);
0e8316cc 29 if (!show_only)
691f1a28 30 unlink_or_warn(fullpath);
0e8316cc
BC
31 return 0;
32}
33
27e1e22d
JK
34static int prune_object(const unsigned char *sha1, const char *fullpath,
35 void *data)
ba84a797 36{
cbf731ed 37 struct stat st;
27e1e22d
JK
38
39 /*
40 * Do we know about this object?
41 * It must have been reachable
42 */
43 if (lookup_object(sha1))
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 }
cbf731ed
AS
51 if (st.st_mtime > expire)
52 return 0;
b35ddf41 53 if (show_only || verbose) {
21666f1a
NP
54 enum object_type type = sha1_object_info(sha1, NULL);
55 printf("%s %s\n", sha1_to_hex(sha1),
56 (type > 0) ? typename(type) : "unknown");
b35ddf41
MG
57 }
58 if (!show_only)
691f1a28 59 unlink_or_warn(fullpath);
ba84a797
LT
60 return 0;
61}
62
27e1e22d 63static int prune_cruft(const char *basename, const char *path, void *data)
ba84a797 64{
27e1e22d
JK
65 if (starts_with(basename, "tmp_obj_"))
66 prune_tmp_file(path);
67 else
68 fprintf(stderr, "bad sha1 file: %s\n", path);
ba84a797
LT
69 return 0;
70}
71
27e1e22d 72static int prune_subdir(int nr, const char *path, void *data)
ba84a797 73{
27e1e22d
JK
74 if (!show_only)
75 rmdir(path);
76 return 0;
ba84a797
LT
77}
78
23af91d1
NTND
79static int prune_worktree(const char *id, struct strbuf *reason)
80{
81 struct stat st;
82 char *path;
83 int fd, len;
84
85 if (!is_directory(git_path("worktrees/%s", id))) {
86 strbuf_addf(reason, _("Removing worktrees/%s: not a valid directory"), id);
87 return 1;
88 }
89 if (file_exists(git_path("worktrees/%s/locked", id)))
90 return 0;
91 if (stat(git_path("worktrees/%s/gitdir", id), &st)) {
92 strbuf_addf(reason, _("Removing worktrees/%s: gitdir file does not exist"), id);
93 return 1;
94 }
95 fd = open(git_path("worktrees/%s/gitdir", id), O_RDONLY);
96 if (fd < 0) {
97 strbuf_addf(reason, _("Removing worktrees/%s: unable to read gitdir file (%s)"),
98 id, strerror(errno));
99 return 1;
100 }
101 len = st.st_size;
102 path = xmalloc(len + 1);
103 read_in_full(fd, path, len);
104 close(fd);
105 while (len && (path[len - 1] == '\n' || path[len - 1] == '\r'))
106 len--;
107 if (!len) {
108 strbuf_addf(reason, _("Removing worktrees/%s: invalid gitdir file"), id);
109 free(path);
110 return 1;
111 }
112 path[len] = '\0';
113 if (!file_exists(path)) {
114 struct stat st_link;
115 free(path);
116 /*
117 * the repo is moved manually and has not been
118 * accessed since?
119 */
120 if (!stat(git_path("worktrees/%s/link", id), &st_link) &&
121 st_link.st_nlink > 1)
122 return 0;
562bc080
MK
123 if (st.st_mtime <= expire) {
124 strbuf_addf(reason, _("Removing worktrees/%s: gitdir file points to non-existent location"), id);
125 return 1;
126 } else {
127 return 0;
128 }
23af91d1
NTND
129 }
130 free(path);
562bc080 131 return 0;
23af91d1
NTND
132}
133
134static void prune_worktrees(void)
135{
136 struct strbuf reason = STRBUF_INIT;
137 struct strbuf path = STRBUF_INIT;
138 DIR *dir = opendir(git_path("worktrees"));
139 struct dirent *d;
140 int ret;
141 if (!dir)
142 return;
143 while ((d = readdir(dir)) != NULL) {
144 if (!strcmp(d->d_name, ".") || !strcmp(d->d_name, ".."))
145 continue;
146 strbuf_reset(&reason);
147 if (!prune_worktree(d->d_name, &reason))
148 continue;
149 if (show_only || verbose)
150 printf("%s\n", reason.buf);
151 if (show_only)
152 continue;
153 strbuf_reset(&path);
154 strbuf_addstr(&path, git_path("worktrees/%s", d->d_name));
155 ret = remove_dir_recursively(&path, 0);
156 if (ret < 0 && errno == ENOTDIR)
157 ret = unlink(path.buf);
158 if (ret)
159 error(_("failed to remove: %s"), strerror(errno));
160 }
161 closedir(dir);
162 if (!show_only)
163 rmdir(git_path("worktrees"));
164 strbuf_release(&reason);
165 strbuf_release(&path);
166}
167
8464010f
DST
168/*
169 * Write errors (particularly out of space) can result in
170 * failed temporary packs (and more rarely indexes and other
9517e6b8 171 * files beginning with "tmp_") accumulating in the object
db87e396 172 * and the pack directories.
8464010f 173 */
db87e396 174static void remove_temporary_files(const char *path)
8464010f
DST
175{
176 DIR *dir;
177 struct dirent *de;
8464010f 178
db87e396 179 dir = opendir(path);
8464010f 180 if (!dir) {
db87e396 181 fprintf(stderr, "Unable to open directory %s\n", path);
8464010f
DST
182 return;
183 }
0e8316cc 184 while ((de = readdir(dir)) != NULL)
59556548 185 if (starts_with(de->d_name, "tmp_"))
4454e9cb 186 prune_tmp_file(mkpath("%s/%s", path, de->d_name));
8464010f
DST
187 closedir(dir);
188}
189
a633fca0 190int cmd_prune(int argc, const char **argv, const char *prefix)
ba84a797 191{
24304816 192 struct rev_info revs;
bf0a59b3 193 struct progress *progress = NULL;
23af91d1 194 int do_prune_worktrees = 0;
629de472 195 const struct option options[] = {
8f5b7281
NTND
196 OPT__DRY_RUN(&show_only, N_("do not remove, show only")),
197 OPT__VERBOSE(&verbose, N_("report pruned objects")),
198 OPT_BOOL(0, "progress", &show_progress, N_("show progress")),
23af91d1 199 OPT_BOOL(0, "worktrees", &do_prune_worktrees, N_("prune .git/worktrees")),
27ec394a
JH
200 OPT_EXPIRY_DATE(0, "expire", &expire,
201 N_("expire objects older than <time>")),
629de472
MB
202 OPT_END()
203 };
db87e396 204 char *s;
ba84a797 205
cbf731ed 206 expire = ULONG_MAX;
16157b80 207 save_commit_buffer = 0;
afc711b8 208 check_replace_refs = 0;
ff4056bb 209 ref_paranoia = 1;
a633fca0 210 init_revisions(&revs, prefix);
ba84a797 211
37782920 212 argc = parse_options(argc, argv, prefix, options, prune_usage, 0);
23af91d1
NTND
213
214 if (do_prune_worktrees) {
215 if (argc)
216 die(_("--worktrees does not take extra arguments"));
217 prune_worktrees();
218 return 0;
219 }
220
fe308f53
JH
221 while (argc--) {
222 unsigned char sha1[20];
223 const char *name = *argv++;
224
225 if (!get_sha1(name, sha1)) {
f7892d18 226 struct object *object = parse_object_or_die(sha1, name);
fe308f53
JH
227 add_pending_object(&revs, object, "");
228 }
229 else
230 die("unrecognized argument: %s", name);
231 }
bf0a59b3
JK
232
233 if (show_progress == -1)
234 show_progress = isatty(2);
235 if (show_progress)
754dbc43 236 progress = start_progress_delay(_("Checking connectivity"), 0, 0, 2);
bf0a59b3 237
d3038d22 238 mark_reachable_objects(&revs, 1, expire, progress);
dc347195 239 stop_progress(&progress);
27e1e22d
JK
240 for_each_loose_file_in_objdir(get_object_directory(), prune_object,
241 prune_cruft, prune_subdir, NULL);
ba84a797 242
af0b4a3b 243 prune_packed_objects(show_only ? PRUNE_PACKED_DRY_RUN : 0);
db87e396 244 remove_temporary_files(get_object_directory());
4e2d094d 245 s = mkpathdup("%s/pack", get_object_directory());
db87e396
BC
246 remove_temporary_files(s);
247 free(s);
eab3296c
NTND
248
249 if (is_repository_shallow())
250 prune_shallow(show_only);
251
ba84a797
LT
252 return 0;
253}