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Commit | Line | Data |
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4264dc15 | 1 | #include "builtin.h" |
697cc8ef | 2 | #include "lockfile.h" |
4264dc15 JH |
3 | #include "commit.h" |
4 | #include "refs.h" | |
5 | #include "dir.h" | |
8d8b9f62 | 6 | #include "tree-walk.h" |
1389d9dd JH |
7 | #include "diff.h" |
8 | #include "revision.h" | |
9 | #include "reachable.h" | |
10 | ||
11 | /* | |
12 | * reflog expire | |
13 | */ | |
14 | ||
15 | static const char reflog_expire_usage[] = | |
580b7d36 | 16 | "git reflog expire [--verbose] [--dry-run] [--stale-fix] [--expire=<time>] [--expire-unreachable=<time>] [--all] <refs>..."; |
3c386aa3 | 17 | static const char reflog_delete_usage[] = |
1b1dd23f | 18 | "git reflog delete [--verbose] [--dry-run] [--rewrite] [--updateref] <refs>..."; |
4264dc15 | 19 | |
4aec56d1 JH |
20 | static unsigned long default_reflog_expire; |
21 | static unsigned long default_reflog_expire_unreachable; | |
22 | ||
1389d9dd JH |
23 | struct cmd_reflog_expire_cb { |
24 | struct rev_info revs; | |
25 | int dry_run; | |
26 | int stalefix; | |
2b81fab2 | 27 | int rewrite; |
55f10565 | 28 | int updateref; |
1389d9dd JH |
29 | int verbose; |
30 | unsigned long expire_total; | |
31 | unsigned long expire_unreachable; | |
552cecc2 | 32 | int recno; |
1389d9dd JH |
33 | }; |
34 | ||
4264dc15 JH |
35 | struct expire_reflog_cb { |
36 | FILE *newlog; | |
03cb91b1 JH |
37 | enum { |
38 | UE_NORMAL, | |
39 | UE_ALWAYS, | |
40 | UE_HEAD | |
41 | } unreachable_expire_kind; | |
b4ca1db9 JH |
42 | struct commit_list *mark_list; |
43 | unsigned long mark_limit; | |
1389d9dd | 44 | struct cmd_reflog_expire_cb *cmd; |
2b81fab2 | 45 | unsigned char last_kept_sha1[20]; |
4264dc15 JH |
46 | }; |
47 | ||
bda3a31c JH |
48 | struct collected_reflog { |
49 | unsigned char sha1[20]; | |
50 | char reflog[FLEX_ARRAY]; | |
51 | }; | |
52 | struct collect_reflog_cb { | |
53 | struct collected_reflog **e; | |
54 | int alloc; | |
55 | int nr; | |
56 | }; | |
57 | ||
cd1f9c36 JH |
58 | #define INCOMPLETE (1u<<10) |
59 | #define STUDYING (1u<<11) | |
494fbfe8 | 60 | #define REACHABLE (1u<<12) |
cd1f9c36 | 61 | |
8d8b9f62 JH |
62 | static int tree_is_complete(const unsigned char *sha1) |
63 | { | |
64 | struct tree_desc desc; | |
cd1f9c36 JH |
65 | struct name_entry entry; |
66 | int complete; | |
67 | struct tree *tree; | |
8d8b9f62 | 68 | |
cd1f9c36 JH |
69 | tree = lookup_tree(sha1); |
70 | if (!tree) | |
8d8b9f62 | 71 | return 0; |
cd1f9c36 JH |
72 | if (tree->object.flags & SEEN) |
73 | return 1; | |
74 | if (tree->object.flags & INCOMPLETE) | |
75 | return 0; | |
76 | ||
6fda5e51 | 77 | if (!tree->buffer) { |
21666f1a | 78 | enum object_type type; |
6fda5e51 LT |
79 | unsigned long size; |
80 | void *data = read_sha1_file(sha1, &type, &size); | |
cd1f9c36 JH |
81 | if (!data) { |
82 | tree->object.flags |= INCOMPLETE; | |
8d8b9f62 JH |
83 | return 0; |
84 | } | |
cd1f9c36 | 85 | tree->buffer = data; |
6fda5e51 | 86 | tree->size = size; |
8d8b9f62 | 87 | } |
6fda5e51 | 88 | init_tree_desc(&desc, tree->buffer, tree->size); |
cd1f9c36 JH |
89 | complete = 1; |
90 | while (tree_entry(&desc, &entry)) { | |
91 | if (!has_sha1_file(entry.sha1) || | |
92 | (S_ISDIR(entry.mode) && !tree_is_complete(entry.sha1))) { | |
93 | tree->object.flags |= INCOMPLETE; | |
94 | complete = 0; | |
95 | } | |
96 | } | |
6e454b9a | 97 | free_tree_buffer(tree); |
8d8b9f62 | 98 | |
cd1f9c36 JH |
99 | if (complete) |
100 | tree->object.flags |= SEEN; | |
101 | return complete; | |
102 | } | |
1389d9dd JH |
103 | |
104 | static int commit_is_complete(struct commit *commit) | |
105 | { | |
106 | struct object_array study; | |
107 | struct object_array found; | |
108 | int is_incomplete = 0; | |
109 | int i; | |
110 | ||
111 | /* early return */ | |
112 | if (commit->object.flags & SEEN) | |
113 | return 1; | |
114 | if (commit->object.flags & INCOMPLETE) | |
115 | return 0; | |
116 | /* | |
117 | * Find all commits that are reachable and are not marked as | |
118 | * SEEN. Then make sure the trees and blobs contained are | |
119 | * complete. After that, mark these commits also as SEEN. | |
120 | * If some of the objects that are needed to complete this | |
121 | * commit are missing, mark this commit as INCOMPLETE. | |
122 | */ | |
123 | memset(&study, 0, sizeof(study)); | |
124 | memset(&found, 0, sizeof(found)); | |
125 | add_object_array(&commit->object, NULL, &study); | |
126 | add_object_array(&commit->object, NULL, &found); | |
127 | commit->object.flags |= STUDYING; | |
128 | while (study.nr) { | |
129 | struct commit *c; | |
130 | struct commit_list *parent; | |
131 | ||
132 | c = (struct commit *)study.objects[--study.nr].item; | |
133 | if (!c->object.parsed && !parse_object(c->object.sha1)) | |
134 | c->object.flags |= INCOMPLETE; | |
135 | ||
136 | if (c->object.flags & INCOMPLETE) { | |
137 | is_incomplete = 1; | |
138 | break; | |
139 | } | |
140 | else if (c->object.flags & SEEN) | |
141 | continue; | |
142 | for (parent = c->parents; parent; parent = parent->next) { | |
143 | struct commit *p = parent->item; | |
144 | if (p->object.flags & STUDYING) | |
145 | continue; | |
146 | p->object.flags |= STUDYING; | |
147 | add_object_array(&p->object, NULL, &study); | |
148 | add_object_array(&p->object, NULL, &found); | |
149 | } | |
150 | } | |
151 | if (!is_incomplete) { | |
cd1f9c36 JH |
152 | /* |
153 | * make sure all commits in "found" array have all the | |
1389d9dd JH |
154 | * necessary objects. |
155 | */ | |
cd1f9c36 | 156 | for (i = 0; i < found.nr; i++) { |
1389d9dd JH |
157 | struct commit *c = |
158 | (struct commit *)found.objects[i].item; | |
cd1f9c36 | 159 | if (!tree_is_complete(c->tree->object.sha1)) { |
1389d9dd | 160 | is_incomplete = 1; |
cd1f9c36 JH |
161 | c->object.flags |= INCOMPLETE; |
162 | } | |
1389d9dd JH |
163 | } |
164 | if (!is_incomplete) { | |
165 | /* mark all found commits as complete, iow SEEN */ | |
166 | for (i = 0; i < found.nr; i++) | |
167 | found.objects[i].item->flags |= SEEN; | |
168 | } | |
169 | } | |
170 | /* clear flags from the objects we traversed */ | |
171 | for (i = 0; i < found.nr; i++) | |
172 | found.objects[i].item->flags &= ~STUDYING; | |
173 | if (is_incomplete) | |
174 | commit->object.flags |= INCOMPLETE; | |
cd1f9c36 JH |
175 | else { |
176 | /* | |
177 | * If we come here, we have (1) traversed the ancestry chain | |
178 | * from the "commit" until we reach SEEN commits (which are | |
179 | * known to be complete), and (2) made sure that the commits | |
180 | * encountered during the above traversal refer to trees that | |
181 | * are complete. Which means that we know *all* the commits | |
182 | * we have seen during this process are complete. | |
183 | */ | |
184 | for (i = 0; i < found.nr; i++) | |
185 | found.objects[i].item->flags |= SEEN; | |
186 | } | |
1389d9dd JH |
187 | /* free object arrays */ |
188 | free(study.objects); | |
189 | free(found.objects); | |
190 | return !is_incomplete; | |
191 | } | |
192 | ||
4264dc15 JH |
193 | static int keep_entry(struct commit **it, unsigned char *sha1) |
194 | { | |
8d8b9f62 JH |
195 | struct commit *commit; |
196 | ||
4264dc15 JH |
197 | if (is_null_sha1(sha1)) |
198 | return 1; | |
8d8b9f62 JH |
199 | commit = lookup_commit_reference_gently(sha1, 1); |
200 | if (!commit) | |
201 | return 0; | |
202 | ||
1389d9dd JH |
203 | /* |
204 | * Make sure everything in this commit exists. | |
205 | * | |
206 | * We have walked all the objects reachable from the refs | |
207 | * and cache earlier. The commits reachable by this commit | |
208 | * must meet SEEN commits -- and then we should mark them as | |
209 | * SEEN as well. | |
210 | */ | |
211 | if (!commit_is_complete(commit)) | |
8d8b9f62 JH |
212 | return 0; |
213 | *it = commit; | |
214 | return 1; | |
4264dc15 JH |
215 | } |
216 | ||
b4ca1db9 JH |
217 | /* |
218 | * Starting from commits in the cb->mark_list, mark commits that are | |
219 | * reachable from them. Stop the traversal at commits older than | |
220 | * the expire_limit and queue them back, so that the caller can call | |
221 | * us again to restart the traversal with longer expire_limit. | |
222 | */ | |
223 | static void mark_reachable(struct expire_reflog_cb *cb) | |
666e07e6 | 224 | { |
b4ca1db9 JH |
225 | struct commit *commit; |
226 | struct commit_list *pending; | |
227 | unsigned long expire_limit = cb->mark_limit; | |
228 | struct commit_list *leftover = NULL; | |
666e07e6 | 229 | |
b4ca1db9 JH |
230 | for (pending = cb->mark_list; pending; pending = pending->next) |
231 | pending->item->object.flags &= ~REACHABLE; | |
494fbfe8 | 232 | |
b4ca1db9 | 233 | pending = cb->mark_list; |
494fbfe8 JH |
234 | while (pending) { |
235 | struct commit_list *entry = pending; | |
236 | struct commit_list *parent; | |
237 | pending = entry->next; | |
238 | commit = entry->item; | |
239 | free(entry); | |
240 | if (commit->object.flags & REACHABLE) | |
241 | continue; | |
242 | if (parse_commit(commit)) | |
243 | continue; | |
244 | commit->object.flags |= REACHABLE; | |
b4ca1db9 JH |
245 | if (commit->date < expire_limit) { |
246 | commit_list_insert(commit, &leftover); | |
494fbfe8 | 247 | continue; |
b4ca1db9 JH |
248 | } |
249 | commit->object.flags |= REACHABLE; | |
494fbfe8 JH |
250 | parent = commit->parents; |
251 | while (parent) { | |
252 | commit = parent->item; | |
253 | parent = parent->next; | |
254 | if (commit->object.flags & REACHABLE) | |
255 | continue; | |
256 | commit_list_insert(commit, &pending); | |
257 | } | |
258 | } | |
b4ca1db9 JH |
259 | cb->mark_list = leftover; |
260 | } | |
261 | ||
262 | static int unreachable(struct expire_reflog_cb *cb, struct commit *commit, unsigned char *sha1) | |
263 | { | |
264 | /* | |
265 | * We may or may not have the commit yet - if not, look it | |
266 | * up using the supplied sha1. | |
267 | */ | |
268 | if (!commit) { | |
269 | if (is_null_sha1(sha1)) | |
270 | return 0; | |
271 | ||
272 | commit = lookup_commit_reference_gently(sha1, 1); | |
273 | ||
274 | /* Not a commit -- keep it */ | |
275 | if (!commit) | |
276 | return 0; | |
277 | } | |
278 | ||
279 | /* Reachable from the current ref? Don't prune. */ | |
280 | if (commit->object.flags & REACHABLE) | |
281 | return 0; | |
282 | ||
283 | if (cb->mark_list && cb->mark_limit) { | |
284 | cb->mark_limit = 0; /* dig down to the root */ | |
285 | mark_reachable(cb); | |
286 | } | |
287 | ||
288 | return !(commit->object.flags & REACHABLE); | |
494fbfe8 JH |
289 | } |
290 | ||
4264dc15 | 291 | static int expire_reflog_ent(unsigned char *osha1, unsigned char *nsha1, |
883d60fa JS |
292 | const char *email, unsigned long timestamp, int tz, |
293 | const char *message, void *cb_data) | |
4264dc15 JH |
294 | { |
295 | struct expire_reflog_cb *cb = cb_data; | |
4264dc15 JH |
296 | struct commit *old, *new; |
297 | ||
1389d9dd | 298 | if (timestamp < cb->cmd->expire_total) |
4264dc15 JH |
299 | goto prune; |
300 | ||
2b81fab2 BC |
301 | if (cb->cmd->rewrite) |
302 | osha1 = cb->last_kept_sha1; | |
303 | ||
9bbaa6cc | 304 | old = new = NULL; |
1389d9dd JH |
305 | if (cb->cmd->stalefix && |
306 | (!keep_entry(&old, osha1) || !keep_entry(&new, nsha1))) | |
4264dc15 JH |
307 | goto prune; |
308 | ||
9bbaa6cc | 309 | if (timestamp < cb->cmd->expire_unreachable) { |
03cb91b1 | 310 | if (cb->unreachable_expire_kind == UE_ALWAYS) |
9bbaa6cc | 311 | goto prune; |
666e07e6 | 312 | if (unreachable(cb, old, osha1) || unreachable(cb, new, nsha1)) |
9bbaa6cc JH |
313 | goto prune; |
314 | } | |
4264dc15 | 315 | |
552cecc2 JS |
316 | if (cb->cmd->recno && --(cb->cmd->recno) == 0) |
317 | goto prune; | |
318 | ||
883d60fa JS |
319 | if (cb->newlog) { |
320 | char sign = (tz < 0) ? '-' : '+'; | |
321 | int zone = (tz < 0) ? (-tz) : tz; | |
322 | fprintf(cb->newlog, "%s %s %s %lu %c%04d\t%s", | |
323 | sha1_to_hex(osha1), sha1_to_hex(nsha1), | |
324 | email, timestamp, sign, zone, | |
325 | message); | |
2b81fab2 | 326 | hashcpy(cb->last_kept_sha1, nsha1); |
883d60fa | 327 | } |
1389d9dd | 328 | if (cb->cmd->verbose) |
883d60fa | 329 | printf("keep %s", message); |
4264dc15 JH |
330 | return 0; |
331 | prune: | |
95cfe958 NTND |
332 | if (!cb->newlog) |
333 | printf("would prune %s", message); | |
334 | else if (cb->cmd->verbose) | |
335 | printf("prune %s", message); | |
4264dc15 JH |
336 | return 0; |
337 | } | |
338 | ||
03cb91b1 JH |
339 | static int push_tip_to_list(const char *refname, const unsigned char *sha1, int flags, void *cb_data) |
340 | { | |
341 | struct commit_list **list = cb_data; | |
342 | struct commit *tip_commit; | |
343 | if (flags & REF_ISSYMREF) | |
344 | return 0; | |
345 | tip_commit = lookup_commit_reference_gently(sha1, 1); | |
346 | if (!tip_commit) | |
347 | return 0; | |
348 | commit_list_insert(tip_commit, list); | |
349 | return 0; | |
350 | } | |
351 | ||
524127af | 352 | static int expire_reflog(const char *refname, const unsigned char *sha1, |
55dfc8de | 353 | struct cmd_reflog_expire_cb *cmd) |
4264dc15 | 354 | { |
f3b661f7 | 355 | static struct lock_file reflog_lock; |
4264dc15 JH |
356 | struct expire_reflog_cb cb; |
357 | struct ref_lock *lock; | |
f3b661f7 | 358 | char *log_file; |
03cb91b1 JH |
359 | struct commit *tip_commit; |
360 | struct commit_list *tips; | |
4264dc15 JH |
361 | int status = 0; |
362 | ||
4264dc15 | 363 | memset(&cb, 0, sizeof(cb)); |
3cb22b8e JH |
364 | |
365 | /* | |
f3b661f7 MH |
366 | * The reflog file is locked by holding the lock on the |
367 | * reference itself, plus we might need to update the | |
368 | * reference if --updateref was specified: | |
4264dc15 | 369 | */ |
524127af | 370 | lock = lock_any_ref_for_update(refname, sha1, 0, NULL); |
4264dc15 | 371 | if (!lock) |
524127af | 372 | return error("cannot lock ref '%s'", refname); |
2e376b31 MH |
373 | if (!reflog_exists(refname)) { |
374 | unlock_ref(lock); | |
375 | return 0; | |
376 | } | |
f3b661f7 | 377 | |
524127af | 378 | log_file = git_pathdup("logs/%s", refname); |
4264dc15 | 379 | if (!cmd->dry_run) { |
f3b661f7 MH |
380 | /* |
381 | * Even though holding $GIT_DIR/logs/$reflog.lock has | |
382 | * no locking implications, we use the lock_file | |
383 | * machinery here anyway because it does a lot of the | |
384 | * work we need, including cleaning up if the program | |
385 | * exits unexpectedly. | |
386 | */ | |
387 | if (hold_lock_file_for_update(&reflog_lock, log_file, 0) < 0) { | |
388 | struct strbuf err = STRBUF_INIT; | |
389 | unable_to_lock_message(log_file, errno, &err); | |
390 | error("%s", err.buf); | |
391 | strbuf_release(&err); | |
392 | goto failure; | |
393 | } | |
394 | cb.newlog = fdopen_lock_file(&reflog_lock, "w"); | |
395 | if (!cb.newlog) { | |
396 | error("cannot fdopen %s (%s)", | |
397 | reflog_lock.filename.buf, strerror(errno)); | |
398 | goto failure; | |
399 | } | |
4264dc15 JH |
400 | } |
401 | ||
1389d9dd | 402 | cb.cmd = cmd; |
03cb91b1 | 403 | |
524127af | 404 | if (!cmd->expire_unreachable || !strcmp(refname, "HEAD")) { |
03cb91b1 JH |
405 | tip_commit = NULL; |
406 | cb.unreachable_expire_kind = UE_HEAD; | |
407 | } else { | |
408 | tip_commit = lookup_commit_reference_gently(sha1, 1); | |
409 | if (!tip_commit) | |
410 | cb.unreachable_expire_kind = UE_ALWAYS; | |
411 | else | |
412 | cb.unreachable_expire_kind = UE_NORMAL; | |
413 | } | |
414 | ||
415 | if (cmd->expire_unreachable <= cmd->expire_total) | |
416 | cb.unreachable_expire_kind = UE_ALWAYS; | |
417 | ||
418 | cb.mark_list = NULL; | |
419 | tips = NULL; | |
420 | if (cb.unreachable_expire_kind != UE_ALWAYS) { | |
421 | if (cb.unreachable_expire_kind == UE_HEAD) { | |
422 | struct commit_list *elem; | |
423 | for_each_ref(push_tip_to_list, &tips); | |
424 | for (elem = tips; elem; elem = elem->next) | |
425 | commit_list_insert(elem->item, &cb.mark_list); | |
426 | } else { | |
427 | commit_list_insert(tip_commit, &cb.mark_list); | |
428 | } | |
b4ca1db9 JH |
429 | cb.mark_limit = cmd->expire_total; |
430 | mark_reachable(&cb); | |
431 | } | |
03cb91b1 | 432 | |
524127af | 433 | for_each_reflog_ent(refname, expire_reflog_ent, &cb); |
03cb91b1 JH |
434 | |
435 | if (cb.unreachable_expire_kind != UE_ALWAYS) { | |
436 | if (cb.unreachable_expire_kind == UE_HEAD) { | |
437 | struct commit_list *elem; | |
438 | for (elem = tips; elem; elem = elem->next) | |
e8e92e05 | 439 | clear_commit_marks(elem->item, REACHABLE); |
03cb91b1 JH |
440 | free_commit_list(tips); |
441 | } else { | |
442 | clear_commit_marks(tip_commit, REACHABLE); | |
443 | } | |
444 | } | |
2e376b31 | 445 | |
4264dc15 | 446 | if (cb.newlog) { |
f3b661f7 MH |
447 | if (close_lock_file(&reflog_lock)) { |
448 | status |= error("couldn't write %s: %s", log_file, | |
449 | strerror(errno)); | |
55f10565 BC |
450 | } else if (cmd->updateref && |
451 | (write_in_full(lock->lock_fd, | |
452 | sha1_to_hex(cb.last_kept_sha1), 40) != 40 || | |
2b7ca830 | 453 | write_str_in_full(lock->lock_fd, "\n") != 1 || |
55f10565 | 454 | close_ref(lock) < 0)) { |
f3b661f7 | 455 | status |= error("couldn't write %s", |
cf6950d3 | 456 | lock->lk->filename.buf); |
f3b661f7 MH |
457 | rollback_lock_file(&reflog_lock); |
458 | } else if (commit_lock_file(&reflog_lock)) { | |
459 | status |= error("unable to commit reflog '%s' (%s)", | |
460 | log_file, strerror(errno)); | |
55f10565 | 461 | } else if (cmd->updateref && commit_ref(lock)) { |
f3b661f7 | 462 | status |= error("couldn't set %s", lock->ref_name); |
4264dc15 JH |
463 | } |
464 | } | |
9a13f0b7 | 465 | free(log_file); |
4264dc15 JH |
466 | unlock_ref(lock); |
467 | return status; | |
f3b661f7 MH |
468 | |
469 | failure: | |
470 | rollback_lock_file(&reflog_lock); | |
471 | free(log_file); | |
472 | unlock_ref(lock); | |
473 | return -1; | |
4264dc15 JH |
474 | } |
475 | ||
bda3a31c JH |
476 | static int collect_reflog(const char *ref, const unsigned char *sha1, int unused, void *cb_data) |
477 | { | |
478 | struct collected_reflog *e; | |
479 | struct collect_reflog_cb *cb = cb_data; | |
480 | size_t namelen = strlen(ref); | |
481 | ||
482 | e = xmalloc(sizeof(*e) + namelen + 1); | |
483 | hashcpy(e->sha1, sha1); | |
484 | memcpy(e->reflog, ref, namelen + 1); | |
485 | ALLOC_GROW(cb->e, cb->nr + 1, cb->alloc); | |
486 | cb->e[cb->nr++] = e; | |
487 | return 0; | |
488 | } | |
489 | ||
3cb22b8e JH |
490 | static struct reflog_expire_cfg { |
491 | struct reflog_expire_cfg *next; | |
492 | unsigned long expire_total; | |
493 | unsigned long expire_unreachable; | |
494 | size_t len; | |
495 | char pattern[FLEX_ARRAY]; | |
496 | } *reflog_expire_cfg, **reflog_expire_cfg_tail; | |
497 | ||
498 | static struct reflog_expire_cfg *find_cfg_ent(const char *pattern, size_t len) | |
4aec56d1 | 499 | { |
3cb22b8e JH |
500 | struct reflog_expire_cfg *ent; |
501 | ||
502 | if (!reflog_expire_cfg_tail) | |
503 | reflog_expire_cfg_tail = &reflog_expire_cfg; | |
504 | ||
505 | for (ent = reflog_expire_cfg; ent; ent = ent->next) | |
506 | if (ent->len == len && | |
507 | !memcmp(ent->pattern, pattern, len)) | |
508 | return ent; | |
509 | ||
510 | ent = xcalloc(1, (sizeof(*ent) + len)); | |
511 | memcpy(ent->pattern, pattern, len); | |
512 | ent->len = len; | |
513 | *reflog_expire_cfg_tail = ent; | |
514 | reflog_expire_cfg_tail = &(ent->next); | |
515 | return ent; | |
516 | } | |
517 | ||
518 | static int parse_expire_cfg_value(const char *var, const char *value, unsigned long *expire) | |
519 | { | |
520 | if (!value) | |
521 | return config_error_nonbool(var); | |
3d27b9b0 JH |
522 | if (parse_expiry_date(value, expire)) |
523 | return error(_("%s' for '%s' is not a valid timestamp"), | |
524 | value, var); | |
3cb22b8e JH |
525 | return 0; |
526 | } | |
527 | ||
528 | /* expiry timer slot */ | |
529 | #define EXPIRE_TOTAL 01 | |
530 | #define EXPIRE_UNREACH 02 | |
531 | ||
532 | static int reflog_expire_config(const char *var, const char *value, void *cb) | |
533 | { | |
b3873c33 JK |
534 | const char *pattern, *key; |
535 | int pattern_len; | |
3cb22b8e JH |
536 | unsigned long expire; |
537 | int slot; | |
538 | struct reflog_expire_cfg *ent; | |
539 | ||
b3873c33 | 540 | if (parse_config_key(var, "gc", &pattern, &pattern_len, &key) < 0) |
3cb22b8e JH |
541 | return git_default_config(var, value, cb); |
542 | ||
b3873c33 | 543 | if (!strcmp(key, "reflogexpire")) { |
3cb22b8e JH |
544 | slot = EXPIRE_TOTAL; |
545 | if (parse_expire_cfg_value(var, value, &expire)) | |
546 | return -1; | |
b3873c33 | 547 | } else if (!strcmp(key, "reflogexpireunreachable")) { |
3cb22b8e JH |
548 | slot = EXPIRE_UNREACH; |
549 | if (parse_expire_cfg_value(var, value, &expire)) | |
550 | return -1; | |
551 | } else | |
552 | return git_default_config(var, value, cb); | |
553 | ||
b3873c33 | 554 | if (!pattern) { |
3cb22b8e JH |
555 | switch (slot) { |
556 | case EXPIRE_TOTAL: | |
557 | default_reflog_expire = expire; | |
558 | break; | |
559 | case EXPIRE_UNREACH: | |
560 | default_reflog_expire_unreachable = expire; | |
561 | break; | |
562 | } | |
4f342b96 JH |
563 | return 0; |
564 | } | |
3cb22b8e | 565 | |
b3873c33 | 566 | ent = find_cfg_ent(pattern, pattern_len); |
3cb22b8e JH |
567 | if (!ent) |
568 | return -1; | |
569 | switch (slot) { | |
570 | case EXPIRE_TOTAL: | |
571 | ent->expire_total = expire; | |
572 | break; | |
573 | case EXPIRE_UNREACH: | |
574 | ent->expire_unreachable = expire; | |
575 | break; | |
576 | } | |
577 | return 0; | |
578 | } | |
579 | ||
580 | static void set_reflog_expiry_param(struct cmd_reflog_expire_cb *cb, int slot, const char *ref) | |
581 | { | |
582 | struct reflog_expire_cfg *ent; | |
583 | ||
584 | if (slot == (EXPIRE_TOTAL|EXPIRE_UNREACH)) | |
585 | return; /* both given explicitly -- nothing to tweak */ | |
586 | ||
587 | for (ent = reflog_expire_cfg; ent; ent = ent->next) { | |
eb07894f | 588 | if (!wildmatch(ent->pattern, ref, 0, NULL)) { |
3cb22b8e JH |
589 | if (!(slot & EXPIRE_TOTAL)) |
590 | cb->expire_total = ent->expire_total; | |
591 | if (!(slot & EXPIRE_UNREACH)) | |
592 | cb->expire_unreachable = ent->expire_unreachable; | |
593 | return; | |
594 | } | |
595 | } | |
596 | ||
60bce2bb JH |
597 | /* |
598 | * If unconfigured, make stash never expire | |
599 | */ | |
600 | if (!strcmp(ref, "refs/stash")) { | |
601 | if (!(slot & EXPIRE_TOTAL)) | |
602 | cb->expire_total = 0; | |
603 | if (!(slot & EXPIRE_UNREACH)) | |
604 | cb->expire_unreachable = 0; | |
605 | return; | |
606 | } | |
607 | ||
3cb22b8e JH |
608 | /* Nothing matched -- use the default value */ |
609 | if (!(slot & EXPIRE_TOTAL)) | |
610 | cb->expire_total = default_reflog_expire; | |
611 | if (!(slot & EXPIRE_UNREACH)) | |
612 | cb->expire_unreachable = default_reflog_expire_unreachable; | |
4aec56d1 JH |
613 | } |
614 | ||
4264dc15 JH |
615 | static int cmd_reflog_expire(int argc, const char **argv, const char *prefix) |
616 | { | |
617 | struct cmd_reflog_expire_cb cb; | |
618 | unsigned long now = time(NULL); | |
619 | int i, status, do_all; | |
3cb22b8e | 620 | int explicit_expiry = 0; |
4264dc15 | 621 | |
4a9f4394 AS |
622 | default_reflog_expire_unreachable = now - 30 * 24 * 3600; |
623 | default_reflog_expire = now - 90 * 24 * 3600; | |
ef90d6d4 | 624 | git_config(reflog_expire_config, NULL); |
4aec56d1 | 625 | |
4264dc15 JH |
626 | save_commit_buffer = 0; |
627 | do_all = status = 0; | |
628 | memset(&cb, 0, sizeof(cb)); | |
4aec56d1 | 629 | |
4aec56d1 JH |
630 | cb.expire_total = default_reflog_expire; |
631 | cb.expire_unreachable = default_reflog_expire_unreachable; | |
4264dc15 JH |
632 | |
633 | for (i = 1; i < argc; i++) { | |
634 | const char *arg = argv[i]; | |
635 | if (!strcmp(arg, "--dry-run") || !strcmp(arg, "-n")) | |
636 | cb.dry_run = 1; | |
59556548 | 637 | else if (starts_with(arg, "--expire=")) { |
3d27b9b0 JH |
638 | if (parse_expiry_date(arg + 9, &cb.expire_total)) |
639 | die(_("'%s' is not a valid timestamp"), arg); | |
3cb22b8e JH |
640 | explicit_expiry |= EXPIRE_TOTAL; |
641 | } | |
59556548 | 642 | else if (starts_with(arg, "--expire-unreachable=")) { |
3d27b9b0 JH |
643 | if (parse_expiry_date(arg + 21, &cb.expire_unreachable)) |
644 | die(_("'%s' is not a valid timestamp"), arg); | |
3cb22b8e JH |
645 | explicit_expiry |= EXPIRE_UNREACH; |
646 | } | |
1389d9dd JH |
647 | else if (!strcmp(arg, "--stale-fix")) |
648 | cb.stalefix = 1; | |
2b81fab2 BC |
649 | else if (!strcmp(arg, "--rewrite")) |
650 | cb.rewrite = 1; | |
55f10565 BC |
651 | else if (!strcmp(arg, "--updateref")) |
652 | cb.updateref = 1; | |
4264dc15 JH |
653 | else if (!strcmp(arg, "--all")) |
654 | do_all = 1; | |
1389d9dd JH |
655 | else if (!strcmp(arg, "--verbose")) |
656 | cb.verbose = 1; | |
4264dc15 JH |
657 | else if (!strcmp(arg, "--")) { |
658 | i++; | |
659 | break; | |
660 | } | |
661 | else if (arg[0] == '-') | |
662 | usage(reflog_expire_usage); | |
663 | else | |
664 | break; | |
665 | } | |
3cb22b8e JH |
666 | |
667 | /* | |
668 | * We can trust the commits and objects reachable from refs | |
669 | * even in older repository. We cannot trust what's reachable | |
670 | * from reflog if the repository was pruned with older git. | |
671 | */ | |
1389d9dd JH |
672 | if (cb.stalefix) { |
673 | init_revisions(&cb.revs, prefix); | |
674 | if (cb.verbose) | |
675 | printf("Marking reachable objects..."); | |
d3038d22 | 676 | mark_reachable_objects(&cb.revs, 0, 0, NULL); |
1389d9dd JH |
677 | if (cb.verbose) |
678 | putchar('\n'); | |
679 | } | |
680 | ||
bda3a31c JH |
681 | if (do_all) { |
682 | struct collect_reflog_cb collected; | |
683 | int i; | |
684 | ||
685 | memset(&collected, 0, sizeof(collected)); | |
686 | for_each_reflog(collect_reflog, &collected); | |
687 | for (i = 0; i < collected.nr; i++) { | |
688 | struct collected_reflog *e = collected.e[i]; | |
3cb22b8e | 689 | set_reflog_expiry_param(&cb, explicit_expiry, e->reflog); |
55dfc8de | 690 | status |= expire_reflog(e->reflog, e->sha1, &cb); |
bda3a31c JH |
691 | free(e); |
692 | } | |
693 | free(collected.e); | |
694 | } | |
695 | ||
90fb46ec PB |
696 | for (; i < argc; i++) { |
697 | char *ref; | |
4264dc15 | 698 | unsigned char sha1[20]; |
90fb46ec PB |
699 | if (!dwim_log(argv[i], strlen(argv[i]), sha1, &ref)) { |
700 | status |= error("%s points nowhere!", argv[i]); | |
4264dc15 JH |
701 | continue; |
702 | } | |
3cb22b8e | 703 | set_reflog_expiry_param(&cb, explicit_expiry, ref); |
55dfc8de | 704 | status |= expire_reflog(ref, sha1, &cb); |
4264dc15 JH |
705 | } |
706 | return status; | |
707 | } | |
708 | ||
552cecc2 JS |
709 | static int count_reflog_ent(unsigned char *osha1, unsigned char *nsha1, |
710 | const char *email, unsigned long timestamp, int tz, | |
711 | const char *message, void *cb_data) | |
712 | { | |
713 | struct cmd_reflog_expire_cb *cb = cb_data; | |
714 | if (!cb->expire_total || timestamp < cb->expire_total) | |
715 | cb->recno++; | |
716 | return 0; | |
717 | } | |
718 | ||
719 | static int cmd_reflog_delete(int argc, const char **argv, const char *prefix) | |
720 | { | |
721 | struct cmd_reflog_expire_cb cb; | |
722 | int i, status = 0; | |
723 | ||
552cecc2 JS |
724 | memset(&cb, 0, sizeof(cb)); |
725 | ||
726 | for (i = 1; i < argc; i++) { | |
3c386aa3 BC |
727 | const char *arg = argv[i]; |
728 | if (!strcmp(arg, "--dry-run") || !strcmp(arg, "-n")) | |
729 | cb.dry_run = 1; | |
2b81fab2 BC |
730 | else if (!strcmp(arg, "--rewrite")) |
731 | cb.rewrite = 1; | |
55f10565 BC |
732 | else if (!strcmp(arg, "--updateref")) |
733 | cb.updateref = 1; | |
3c386aa3 BC |
734 | else if (!strcmp(arg, "--verbose")) |
735 | cb.verbose = 1; | |
736 | else if (!strcmp(arg, "--")) { | |
737 | i++; | |
738 | break; | |
739 | } | |
740 | else if (arg[0] == '-') | |
741 | usage(reflog_delete_usage); | |
742 | else | |
743 | break; | |
744 | } | |
745 | ||
746 | if (argc - i < 1) | |
747 | return error("Nothing to delete?"); | |
748 | ||
749 | for ( ; i < argc; i++) { | |
552cecc2 JS |
750 | const char *spec = strstr(argv[i], "@{"); |
751 | unsigned char sha1[20]; | |
752 | char *ep, *ref; | |
753 | int recno; | |
754 | ||
755 | if (!spec) { | |
cb97cc9f | 756 | status |= error("Not a reflog: %s", argv[i]); |
552cecc2 JS |
757 | continue; |
758 | } | |
759 | ||
55beff4f JH |
760 | if (!dwim_log(argv[i], spec - argv[i], sha1, &ref)) { |
761 | status |= error("no reflog for '%s'", argv[i]); | |
552cecc2 JS |
762 | continue; |
763 | } | |
764 | ||
765 | recno = strtoul(spec + 2, &ep, 10); | |
766 | if (*ep == '}') { | |
767 | cb.recno = -recno; | |
768 | for_each_reflog_ent(ref, count_reflog_ent, &cb); | |
769 | } else { | |
770 | cb.expire_total = approxidate(spec + 2); | |
771 | for_each_reflog_ent(ref, count_reflog_ent, &cb); | |
772 | cb.expire_total = 0; | |
773 | } | |
774 | ||
55dfc8de | 775 | status |= expire_reflog(ref, sha1, &cb); |
552cecc2 JS |
776 | free(ref); |
777 | } | |
778 | return status; | |
779 | } | |
780 | ||
1389d9dd JH |
781 | /* |
782 | * main "reflog" | |
783 | */ | |
784 | ||
4264dc15 | 785 | static const char reflog_usage[] = |
e77095e8 | 786 | "git reflog [ show | expire | delete ]"; |
4264dc15 JH |
787 | |
788 | int cmd_reflog(int argc, const char **argv, const char *prefix) | |
789 | { | |
99caeed0 JN |
790 | if (argc > 1 && !strcmp(argv[1], "-h")) |
791 | usage(reflog_usage); | |
792 | ||
cf39f54e LT |
793 | /* With no command, we default to showing it. */ |
794 | if (argc < 2 || *argv[1] == '-') | |
795 | return cmd_log_reflog(argc, argv, prefix); | |
796 | ||
797 | if (!strcmp(argv[1], "show")) | |
798 | return cmd_log_reflog(argc - 1, argv + 1, prefix); | |
799 | ||
800 | if (!strcmp(argv[1], "expire")) | |
4264dc15 | 801 | return cmd_reflog_expire(argc - 1, argv + 1, prefix); |
cf39f54e | 802 | |
552cecc2 JS |
803 | if (!strcmp(argv[1], "delete")) |
804 | return cmd_reflog_delete(argc - 1, argv + 1, prefix); | |
805 | ||
bf01d4a3 | 806 | return cmd_log_reflog(argc, argv, prefix); |
4264dc15 | 807 | } |