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Commit | Line | Data |
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4264dc15 | 1 | #include "builtin.h" |
b2141fc1 | 2 | #include "config.h" |
697cc8ef | 3 | #include "lockfile.h" |
4264dc15 JH |
4 | #include "commit.h" |
5 | #include "refs.h" | |
6 | #include "dir.h" | |
8d8b9f62 | 7 | #include "tree-walk.h" |
1389d9dd JH |
8 | #include "diff.h" |
9 | #include "revision.h" | |
10 | #include "reachable.h" | |
11 | ||
fe2a1816 | 12 | /* NEEDSWORK: switch to using parse_options */ |
1389d9dd | 13 | static const char reflog_expire_usage[] = |
fe2a1816 | 14 | "git reflog expire [--expire=<time>] [--expire-unreachable=<time>] [--rewrite] [--updateref] [--stale-fix] [--dry-run | -n] [--verbose] [--all] <refs>..."; |
3c386aa3 | 15 | static const char reflog_delete_usage[] = |
fe2a1816 | 16 | "git reflog delete [--rewrite] [--updateref] [--dry-run | -n] [--verbose] <refs>..."; |
afcb2e7a DT |
17 | static const char reflog_exists_usage[] = |
18 | "git reflog exists <ref>"; | |
4264dc15 | 19 | |
dddbad72 JS |
20 | static timestamp_t default_reflog_expire; |
21 | static timestamp_t default_reflog_expire_unreachable; | |
4aec56d1 | 22 | |
1389d9dd JH |
23 | struct cmd_reflog_expire_cb { |
24 | struct rev_info revs; | |
1389d9dd | 25 | int stalefix; |
dddbad72 JS |
26 | timestamp_t expire_total; |
27 | timestamp_t expire_unreachable; | |
552cecc2 | 28 | int recno; |
1389d9dd JH |
29 | }; |
30 | ||
ea7b4f6d | 31 | struct expire_reflog_policy_cb { |
03cb91b1 JH |
32 | enum { |
33 | UE_NORMAL, | |
34 | UE_ALWAYS, | |
35 | UE_HEAD | |
36 | } unreachable_expire_kind; | |
b4ca1db9 JH |
37 | struct commit_list *mark_list; |
38 | unsigned long mark_limit; | |
b729effb | 39 | struct cmd_reflog_expire_cb cmd; |
c48a1635 MH |
40 | struct commit *tip_commit; |
41 | struct commit_list *tips; | |
4264dc15 JH |
42 | }; |
43 | ||
bda3a31c | 44 | struct collected_reflog { |
b8acac54 | 45 | struct object_id oid; |
bda3a31c JH |
46 | char reflog[FLEX_ARRAY]; |
47 | }; | |
ddd64c56 | 48 | |
bda3a31c JH |
49 | struct collect_reflog_cb { |
50 | struct collected_reflog **e; | |
51 | int alloc; | |
52 | int nr; | |
53 | }; | |
54 | ||
95308d64 | 55 | /* Remember to update object flag allocation in object.h */ |
cd1f9c36 JH |
56 | #define INCOMPLETE (1u<<10) |
57 | #define STUDYING (1u<<11) | |
494fbfe8 | 58 | #define REACHABLE (1u<<12) |
cd1f9c36 | 59 | |
49a09e74 | 60 | static int tree_is_complete(const struct object_id *oid) |
8d8b9f62 JH |
61 | { |
62 | struct tree_desc desc; | |
cd1f9c36 JH |
63 | struct name_entry entry; |
64 | int complete; | |
65 | struct tree *tree; | |
8d8b9f62 | 66 | |
740ee055 | 67 | tree = lookup_tree(oid); |
cd1f9c36 | 68 | if (!tree) |
8d8b9f62 | 69 | return 0; |
cd1f9c36 JH |
70 | if (tree->object.flags & SEEN) |
71 | return 1; | |
72 | if (tree->object.flags & INCOMPLETE) | |
73 | return 0; | |
74 | ||
6fda5e51 | 75 | if (!tree->buffer) { |
21666f1a | 76 | enum object_type type; |
6fda5e51 | 77 | unsigned long size; |
b4f5aca4 | 78 | void *data = read_object_file(oid, &type, &size); |
cd1f9c36 JH |
79 | if (!data) { |
80 | tree->object.flags |= INCOMPLETE; | |
8d8b9f62 JH |
81 | return 0; |
82 | } | |
cd1f9c36 | 83 | tree->buffer = data; |
6fda5e51 | 84 | tree->size = size; |
8d8b9f62 | 85 | } |
6fda5e51 | 86 | init_tree_desc(&desc, tree->buffer, tree->size); |
cd1f9c36 JH |
87 | complete = 1; |
88 | while (tree_entry(&desc, &entry)) { | |
7d924c91 | 89 | if (!has_sha1_file(entry.oid->hash) || |
49a09e74 | 90 | (S_ISDIR(entry.mode) && !tree_is_complete(entry.oid))) { |
cd1f9c36 JH |
91 | tree->object.flags |= INCOMPLETE; |
92 | complete = 0; | |
93 | } | |
94 | } | |
6e454b9a | 95 | free_tree_buffer(tree); |
8d8b9f62 | 96 | |
cd1f9c36 JH |
97 | if (complete) |
98 | tree->object.flags |= SEEN; | |
99 | return complete; | |
100 | } | |
1389d9dd JH |
101 | |
102 | static int commit_is_complete(struct commit *commit) | |
103 | { | |
104 | struct object_array study; | |
105 | struct object_array found; | |
106 | int is_incomplete = 0; | |
107 | int i; | |
108 | ||
109 | /* early return */ | |
110 | if (commit->object.flags & SEEN) | |
111 | return 1; | |
112 | if (commit->object.flags & INCOMPLETE) | |
113 | return 0; | |
114 | /* | |
115 | * Find all commits that are reachable and are not marked as | |
116 | * SEEN. Then make sure the trees and blobs contained are | |
117 | * complete. After that, mark these commits also as SEEN. | |
118 | * If some of the objects that are needed to complete this | |
119 | * commit are missing, mark this commit as INCOMPLETE. | |
120 | */ | |
121 | memset(&study, 0, sizeof(study)); | |
122 | memset(&found, 0, sizeof(found)); | |
123 | add_object_array(&commit->object, NULL, &study); | |
124 | add_object_array(&commit->object, NULL, &found); | |
125 | commit->object.flags |= STUDYING; | |
126 | while (study.nr) { | |
127 | struct commit *c; | |
128 | struct commit_list *parent; | |
129 | ||
71992039 | 130 | c = (struct commit *)object_array_pop(&study); |
c251c83d | 131 | if (!c->object.parsed && !parse_object(&c->object.oid)) |
1389d9dd JH |
132 | c->object.flags |= INCOMPLETE; |
133 | ||
134 | if (c->object.flags & INCOMPLETE) { | |
135 | is_incomplete = 1; | |
136 | break; | |
137 | } | |
138 | else if (c->object.flags & SEEN) | |
139 | continue; | |
140 | for (parent = c->parents; parent; parent = parent->next) { | |
141 | struct commit *p = parent->item; | |
142 | if (p->object.flags & STUDYING) | |
143 | continue; | |
144 | p->object.flags |= STUDYING; | |
145 | add_object_array(&p->object, NULL, &study); | |
146 | add_object_array(&p->object, NULL, &found); | |
147 | } | |
148 | } | |
149 | if (!is_incomplete) { | |
cd1f9c36 JH |
150 | /* |
151 | * make sure all commits in "found" array have all the | |
1389d9dd JH |
152 | * necessary objects. |
153 | */ | |
cd1f9c36 | 154 | for (i = 0; i < found.nr; i++) { |
1389d9dd JH |
155 | struct commit *c = |
156 | (struct commit *)found.objects[i].item; | |
2e27bd77 | 157 | if (!tree_is_complete(get_commit_tree_oid(c))) { |
1389d9dd | 158 | is_incomplete = 1; |
cd1f9c36 JH |
159 | c->object.flags |= INCOMPLETE; |
160 | } | |
1389d9dd JH |
161 | } |
162 | if (!is_incomplete) { | |
163 | /* mark all found commits as complete, iow SEEN */ | |
164 | for (i = 0; i < found.nr; i++) | |
165 | found.objects[i].item->flags |= SEEN; | |
166 | } | |
167 | } | |
168 | /* clear flags from the objects we traversed */ | |
169 | for (i = 0; i < found.nr; i++) | |
170 | found.objects[i].item->flags &= ~STUDYING; | |
171 | if (is_incomplete) | |
172 | commit->object.flags |= INCOMPLETE; | |
cd1f9c36 JH |
173 | else { |
174 | /* | |
175 | * If we come here, we have (1) traversed the ancestry chain | |
176 | * from the "commit" until we reach SEEN commits (which are | |
177 | * known to be complete), and (2) made sure that the commits | |
178 | * encountered during the above traversal refer to trees that | |
179 | * are complete. Which means that we know *all* the commits | |
180 | * we have seen during this process are complete. | |
181 | */ | |
182 | for (i = 0; i < found.nr; i++) | |
183 | found.objects[i].item->flags |= SEEN; | |
184 | } | |
1389d9dd | 185 | /* free object arrays */ |
dcb572ab MÅ |
186 | object_array_clear(&study); |
187 | object_array_clear(&found); | |
1389d9dd JH |
188 | return !is_incomplete; |
189 | } | |
190 | ||
4322478a | 191 | static int keep_entry(struct commit **it, struct object_id *oid) |
4264dc15 | 192 | { |
8d8b9f62 JH |
193 | struct commit *commit; |
194 | ||
4322478a | 195 | if (is_null_oid(oid)) |
4264dc15 | 196 | return 1; |
bc83266a | 197 | commit = lookup_commit_reference_gently(oid, 1); |
8d8b9f62 JH |
198 | if (!commit) |
199 | return 0; | |
200 | ||
1389d9dd JH |
201 | /* |
202 | * Make sure everything in this commit exists. | |
203 | * | |
204 | * We have walked all the objects reachable from the refs | |
205 | * and cache earlier. The commits reachable by this commit | |
206 | * must meet SEEN commits -- and then we should mark them as | |
207 | * SEEN as well. | |
208 | */ | |
209 | if (!commit_is_complete(commit)) | |
8d8b9f62 JH |
210 | return 0; |
211 | *it = commit; | |
212 | return 1; | |
4264dc15 JH |
213 | } |
214 | ||
b4ca1db9 JH |
215 | /* |
216 | * Starting from commits in the cb->mark_list, mark commits that are | |
217 | * reachable from them. Stop the traversal at commits older than | |
218 | * the expire_limit and queue them back, so that the caller can call | |
219 | * us again to restart the traversal with longer expire_limit. | |
220 | */ | |
ea7b4f6d | 221 | static void mark_reachable(struct expire_reflog_policy_cb *cb) |
666e07e6 | 222 | { |
b4ca1db9 | 223 | struct commit_list *pending; |
dddbad72 | 224 | timestamp_t expire_limit = cb->mark_limit; |
b4ca1db9 | 225 | struct commit_list *leftover = NULL; |
666e07e6 | 226 | |
b4ca1db9 JH |
227 | for (pending = cb->mark_list; pending; pending = pending->next) |
228 | pending->item->object.flags &= ~REACHABLE; | |
494fbfe8 | 229 | |
b4ca1db9 | 230 | pending = cb->mark_list; |
494fbfe8 | 231 | while (pending) { |
494fbfe8 | 232 | struct commit_list *parent; |
e510ab89 | 233 | struct commit *commit = pop_commit(&pending); |
494fbfe8 JH |
234 | if (commit->object.flags & REACHABLE) |
235 | continue; | |
236 | if (parse_commit(commit)) | |
237 | continue; | |
238 | commit->object.flags |= REACHABLE; | |
b4ca1db9 JH |
239 | if (commit->date < expire_limit) { |
240 | commit_list_insert(commit, &leftover); | |
494fbfe8 | 241 | continue; |
b4ca1db9 JH |
242 | } |
243 | commit->object.flags |= REACHABLE; | |
494fbfe8 JH |
244 | parent = commit->parents; |
245 | while (parent) { | |
246 | commit = parent->item; | |
247 | parent = parent->next; | |
248 | if (commit->object.flags & REACHABLE) | |
249 | continue; | |
250 | commit_list_insert(commit, &pending); | |
251 | } | |
252 | } | |
b4ca1db9 JH |
253 | cb->mark_list = leftover; |
254 | } | |
255 | ||
4322478a | 256 | static int unreachable(struct expire_reflog_policy_cb *cb, struct commit *commit, struct object_id *oid) |
b4ca1db9 JH |
257 | { |
258 | /* | |
259 | * We may or may not have the commit yet - if not, look it | |
260 | * up using the supplied sha1. | |
261 | */ | |
262 | if (!commit) { | |
4322478a | 263 | if (is_null_oid(oid)) |
b4ca1db9 JH |
264 | return 0; |
265 | ||
bc83266a | 266 | commit = lookup_commit_reference_gently(oid, 1); |
b4ca1db9 JH |
267 | |
268 | /* Not a commit -- keep it */ | |
269 | if (!commit) | |
270 | return 0; | |
271 | } | |
272 | ||
273 | /* Reachable from the current ref? Don't prune. */ | |
274 | if (commit->object.flags & REACHABLE) | |
275 | return 0; | |
276 | ||
277 | if (cb->mark_list && cb->mark_limit) { | |
278 | cb->mark_limit = 0; /* dig down to the root */ | |
279 | mark_reachable(cb); | |
280 | } | |
281 | ||
282 | return !(commit->object.flags & REACHABLE); | |
494fbfe8 JH |
283 | } |
284 | ||
60cc3c40 MH |
285 | /* |
286 | * Return true iff the specified reflog entry should be expired. | |
287 | */ | |
4322478a | 288 | static int should_expire_reflog_ent(struct object_id *ooid, struct object_id *noid, |
dddbad72 | 289 | const char *email, timestamp_t timestamp, int tz, |
60cc3c40 | 290 | const char *message, void *cb_data) |
4264dc15 | 291 | { |
ea7b4f6d | 292 | struct expire_reflog_policy_cb *cb = cb_data; |
dfa5990d | 293 | struct commit *old_commit, *new_commit; |
4264dc15 | 294 | |
b729effb | 295 | if (timestamp < cb->cmd.expire_total) |
60cc3c40 | 296 | return 1; |
2b81fab2 | 297 | |
dfa5990d | 298 | old_commit = new_commit = NULL; |
b729effb | 299 | if (cb->cmd.stalefix && |
dfa5990d | 300 | (!keep_entry(&old_commit, ooid) || !keep_entry(&new_commit, noid))) |
60cc3c40 | 301 | return 1; |
4264dc15 | 302 | |
b729effb | 303 | if (timestamp < cb->cmd.expire_unreachable) { |
03cb91b1 | 304 | if (cb->unreachable_expire_kind == UE_ALWAYS) |
60cc3c40 | 305 | return 1; |
dfa5990d | 306 | if (unreachable(cb, old_commit, ooid) || unreachable(cb, new_commit, noid)) |
60cc3c40 | 307 | return 1; |
9bbaa6cc | 308 | } |
4264dc15 | 309 | |
b729effb | 310 | if (cb->cmd.recno && --(cb->cmd.recno) == 0) |
60cc3c40 MH |
311 | return 1; |
312 | ||
4264dc15 | 313 | return 0; |
60cc3c40 MH |
314 | } |
315 | ||
5bcad1bc | 316 | static int push_tip_to_list(const char *refname, const struct object_id *oid, |
ea7b4f6d | 317 | int flags, void *cb_data) |
03cb91b1 JH |
318 | { |
319 | struct commit_list **list = cb_data; | |
320 | struct commit *tip_commit; | |
321 | if (flags & REF_ISSYMREF) | |
322 | return 0; | |
bc83266a | 323 | tip_commit = lookup_commit_reference_gently(oid, 1); |
03cb91b1 JH |
324 | if (!tip_commit) |
325 | return 0; | |
326 | commit_list_insert(tip_commit, list); | |
327 | return 0; | |
328 | } | |
329 | ||
c48a1635 | 330 | static void reflog_expiry_prepare(const char *refname, |
4322478a | 331 | const struct object_id *oid, |
b729effb | 332 | void *cb_data) |
c48a1635 | 333 | { |
b729effb MH |
334 | struct expire_reflog_policy_cb *cb = cb_data; |
335 | ||
336 | if (!cb->cmd.expire_unreachable || !strcmp(refname, "HEAD")) { | |
c48a1635 MH |
337 | cb->tip_commit = NULL; |
338 | cb->unreachable_expire_kind = UE_HEAD; | |
339 | } else { | |
bc83266a | 340 | cb->tip_commit = lookup_commit_reference_gently(oid, 1); |
c48a1635 MH |
341 | if (!cb->tip_commit) |
342 | cb->unreachable_expire_kind = UE_ALWAYS; | |
343 | else | |
344 | cb->unreachable_expire_kind = UE_NORMAL; | |
345 | } | |
346 | ||
b729effb | 347 | if (cb->cmd.expire_unreachable <= cb->cmd.expire_total) |
c48a1635 MH |
348 | cb->unreachable_expire_kind = UE_ALWAYS; |
349 | ||
350 | cb->mark_list = NULL; | |
351 | cb->tips = NULL; | |
352 | if (cb->unreachable_expire_kind != UE_ALWAYS) { | |
353 | if (cb->unreachable_expire_kind == UE_HEAD) { | |
354 | struct commit_list *elem; | |
2b2a5be3 | 355 | |
5bcad1bc | 356 | for_each_ref(push_tip_to_list, &cb->tips); |
c48a1635 MH |
357 | for (elem = cb->tips; elem; elem = elem->next) |
358 | commit_list_insert(elem->item, &cb->mark_list); | |
359 | } else { | |
360 | commit_list_insert(cb->tip_commit, &cb->mark_list); | |
361 | } | |
b729effb | 362 | cb->mark_limit = cb->cmd.expire_total; |
c48a1635 MH |
363 | mark_reachable(cb); |
364 | } | |
365 | } | |
366 | ||
b729effb | 367 | static void reflog_expiry_cleanup(void *cb_data) |
c48a1635 | 368 | { |
b729effb MH |
369 | struct expire_reflog_policy_cb *cb = cb_data; |
370 | ||
c48a1635 MH |
371 | if (cb->unreachable_expire_kind != UE_ALWAYS) { |
372 | if (cb->unreachable_expire_kind == UE_HEAD) { | |
373 | struct commit_list *elem; | |
374 | for (elem = cb->tips; elem; elem = elem->next) | |
375 | clear_commit_marks(elem->item, REACHABLE); | |
376 | free_commit_list(cb->tips); | |
377 | } else { | |
378 | clear_commit_marks(cb->tip_commit, REACHABLE); | |
379 | } | |
380 | } | |
381 | } | |
382 | ||
5bcad1bc | 383 | static int collect_reflog(const char *ref, const struct object_id *oid, int unused, void *cb_data) |
bda3a31c JH |
384 | { |
385 | struct collected_reflog *e; | |
386 | struct collect_reflog_cb *cb = cb_data; | |
bda3a31c | 387 | |
96ffc06f | 388 | FLEX_ALLOC_STR(e, reflog, ref); |
b8acac54 | 389 | oidcpy(&e->oid, oid); |
bda3a31c JH |
390 | ALLOC_GROW(cb->e, cb->nr + 1, cb->alloc); |
391 | cb->e[cb->nr++] = e; | |
392 | return 0; | |
393 | } | |
394 | ||
3cb22b8e JH |
395 | static struct reflog_expire_cfg { |
396 | struct reflog_expire_cfg *next; | |
dddbad72 JS |
397 | timestamp_t expire_total; |
398 | timestamp_t expire_unreachable; | |
3cb22b8e JH |
399 | char pattern[FLEX_ARRAY]; |
400 | } *reflog_expire_cfg, **reflog_expire_cfg_tail; | |
401 | ||
402 | static struct reflog_expire_cfg *find_cfg_ent(const char *pattern, size_t len) | |
4aec56d1 | 403 | { |
3cb22b8e JH |
404 | struct reflog_expire_cfg *ent; |
405 | ||
406 | if (!reflog_expire_cfg_tail) | |
407 | reflog_expire_cfg_tail = &reflog_expire_cfg; | |
408 | ||
409 | for (ent = reflog_expire_cfg; ent; ent = ent->next) | |
c3a700fb JK |
410 | if (!strncmp(ent->pattern, pattern, len) && |
411 | ent->pattern[len] == '\0') | |
3cb22b8e JH |
412 | return ent; |
413 | ||
96ffc06f | 414 | FLEX_ALLOC_MEM(ent, pattern, pattern, len); |
3cb22b8e JH |
415 | *reflog_expire_cfg_tail = ent; |
416 | reflog_expire_cfg_tail = &(ent->next); | |
417 | return ent; | |
418 | } | |
419 | ||
3cb22b8e JH |
420 | /* expiry timer slot */ |
421 | #define EXPIRE_TOTAL 01 | |
422 | #define EXPIRE_UNREACH 02 | |
423 | ||
424 | static int reflog_expire_config(const char *var, const char *value, void *cb) | |
425 | { | |
b3873c33 JK |
426 | const char *pattern, *key; |
427 | int pattern_len; | |
dddbad72 | 428 | timestamp_t expire; |
3cb22b8e JH |
429 | int slot; |
430 | struct reflog_expire_cfg *ent; | |
431 | ||
b3873c33 | 432 | if (parse_config_key(var, "gc", &pattern, &pattern_len, &key) < 0) |
3cb22b8e JH |
433 | return git_default_config(var, value, cb); |
434 | ||
b3873c33 | 435 | if (!strcmp(key, "reflogexpire")) { |
3cb22b8e | 436 | slot = EXPIRE_TOTAL; |
5f967424 | 437 | if (git_config_expiry_date(&expire, var, value)) |
3cb22b8e | 438 | return -1; |
b3873c33 | 439 | } else if (!strcmp(key, "reflogexpireunreachable")) { |
3cb22b8e | 440 | slot = EXPIRE_UNREACH; |
5f967424 | 441 | if (git_config_expiry_date(&expire, var, value)) |
3cb22b8e JH |
442 | return -1; |
443 | } else | |
444 | return git_default_config(var, value, cb); | |
445 | ||
b3873c33 | 446 | if (!pattern) { |
3cb22b8e JH |
447 | switch (slot) { |
448 | case EXPIRE_TOTAL: | |
449 | default_reflog_expire = expire; | |
450 | break; | |
451 | case EXPIRE_UNREACH: | |
452 | default_reflog_expire_unreachable = expire; | |
453 | break; | |
454 | } | |
4f342b96 JH |
455 | return 0; |
456 | } | |
3cb22b8e | 457 | |
b3873c33 | 458 | ent = find_cfg_ent(pattern, pattern_len); |
3cb22b8e JH |
459 | if (!ent) |
460 | return -1; | |
461 | switch (slot) { | |
462 | case EXPIRE_TOTAL: | |
463 | ent->expire_total = expire; | |
464 | break; | |
465 | case EXPIRE_UNREACH: | |
466 | ent->expire_unreachable = expire; | |
467 | break; | |
468 | } | |
469 | return 0; | |
470 | } | |
471 | ||
472 | static void set_reflog_expiry_param(struct cmd_reflog_expire_cb *cb, int slot, const char *ref) | |
473 | { | |
474 | struct reflog_expire_cfg *ent; | |
475 | ||
476 | if (slot == (EXPIRE_TOTAL|EXPIRE_UNREACH)) | |
477 | return; /* both given explicitly -- nothing to tweak */ | |
478 | ||
479 | for (ent = reflog_expire_cfg; ent; ent = ent->next) { | |
55d34269 | 480 | if (!wildmatch(ent->pattern, ref, 0)) { |
3cb22b8e JH |
481 | if (!(slot & EXPIRE_TOTAL)) |
482 | cb->expire_total = ent->expire_total; | |
483 | if (!(slot & EXPIRE_UNREACH)) | |
484 | cb->expire_unreachable = ent->expire_unreachable; | |
485 | return; | |
486 | } | |
487 | } | |
488 | ||
60bce2bb JH |
489 | /* |
490 | * If unconfigured, make stash never expire | |
491 | */ | |
492 | if (!strcmp(ref, "refs/stash")) { | |
493 | if (!(slot & EXPIRE_TOTAL)) | |
494 | cb->expire_total = 0; | |
495 | if (!(slot & EXPIRE_UNREACH)) | |
496 | cb->expire_unreachable = 0; | |
497 | return; | |
498 | } | |
499 | ||
3cb22b8e JH |
500 | /* Nothing matched -- use the default value */ |
501 | if (!(slot & EXPIRE_TOTAL)) | |
502 | cb->expire_total = default_reflog_expire; | |
503 | if (!(slot & EXPIRE_UNREACH)) | |
504 | cb->expire_unreachable = default_reflog_expire_unreachable; | |
4aec56d1 JH |
505 | } |
506 | ||
4264dc15 JH |
507 | static int cmd_reflog_expire(int argc, const char **argv, const char *prefix) |
508 | { | |
b729effb | 509 | struct expire_reflog_policy_cb cb; |
dddbad72 | 510 | timestamp_t now = time(NULL); |
4264dc15 | 511 | int i, status, do_all; |
3cb22b8e | 512 | int explicit_expiry = 0; |
aba56c89 | 513 | unsigned int flags = 0; |
4264dc15 | 514 | |
4a9f4394 AS |
515 | default_reflog_expire_unreachable = now - 30 * 24 * 3600; |
516 | default_reflog_expire = now - 90 * 24 * 3600; | |
ef90d6d4 | 517 | git_config(reflog_expire_config, NULL); |
4aec56d1 | 518 | |
4264dc15 JH |
519 | save_commit_buffer = 0; |
520 | do_all = status = 0; | |
521 | memset(&cb, 0, sizeof(cb)); | |
4aec56d1 | 522 | |
b729effb MH |
523 | cb.cmd.expire_total = default_reflog_expire; |
524 | cb.cmd.expire_unreachable = default_reflog_expire_unreachable; | |
4264dc15 JH |
525 | |
526 | for (i = 1; i < argc; i++) { | |
527 | const char *arg = argv[i]; | |
528 | if (!strcmp(arg, "--dry-run") || !strcmp(arg, "-n")) | |
98f31d85 | 529 | flags |= EXPIRE_REFLOGS_DRY_RUN; |
59556548 | 530 | else if (starts_with(arg, "--expire=")) { |
b729effb | 531 | if (parse_expiry_date(arg + 9, &cb.cmd.expire_total)) |
3d27b9b0 | 532 | die(_("'%s' is not a valid timestamp"), arg); |
3cb22b8e JH |
533 | explicit_expiry |= EXPIRE_TOTAL; |
534 | } | |
59556548 | 535 | else if (starts_with(arg, "--expire-unreachable=")) { |
b729effb | 536 | if (parse_expiry_date(arg + 21, &cb.cmd.expire_unreachable)) |
3d27b9b0 | 537 | die(_("'%s' is not a valid timestamp"), arg); |
3cb22b8e JH |
538 | explicit_expiry |= EXPIRE_UNREACH; |
539 | } | |
1389d9dd | 540 | else if (!strcmp(arg, "--stale-fix")) |
b729effb | 541 | cb.cmd.stalefix = 1; |
2b81fab2 | 542 | else if (!strcmp(arg, "--rewrite")) |
553daf13 | 543 | flags |= EXPIRE_REFLOGS_REWRITE; |
55f10565 | 544 | else if (!strcmp(arg, "--updateref")) |
c4c4fbf8 | 545 | flags |= EXPIRE_REFLOGS_UPDATE_REF; |
4264dc15 JH |
546 | else if (!strcmp(arg, "--all")) |
547 | do_all = 1; | |
1389d9dd | 548 | else if (!strcmp(arg, "--verbose")) |
bc11155c | 549 | flags |= EXPIRE_REFLOGS_VERBOSE; |
4264dc15 JH |
550 | else if (!strcmp(arg, "--")) { |
551 | i++; | |
552 | break; | |
553 | } | |
554 | else if (arg[0] == '-') | |
555 | usage(reflog_expire_usage); | |
556 | else | |
557 | break; | |
558 | } | |
3cb22b8e JH |
559 | |
560 | /* | |
561 | * We can trust the commits and objects reachable from refs | |
562 | * even in older repository. We cannot trust what's reachable | |
563 | * from reflog if the repository was pruned with older git. | |
564 | */ | |
b729effb MH |
565 | if (cb.cmd.stalefix) { |
566 | init_revisions(&cb.cmd.revs, prefix); | |
bc11155c | 567 | if (flags & EXPIRE_REFLOGS_VERBOSE) |
1389d9dd | 568 | printf("Marking reachable objects..."); |
b729effb | 569 | mark_reachable_objects(&cb.cmd.revs, 0, 0, NULL); |
bc11155c | 570 | if (flags & EXPIRE_REFLOGS_VERBOSE) |
1389d9dd JH |
571 | putchar('\n'); |
572 | } | |
573 | ||
bda3a31c JH |
574 | if (do_all) { |
575 | struct collect_reflog_cb collected; | |
576 | int i; | |
577 | ||
578 | memset(&collected, 0, sizeof(collected)); | |
5bcad1bc | 579 | for_each_reflog(collect_reflog, &collected); |
bda3a31c JH |
580 | for (i = 0; i < collected.nr; i++) { |
581 | struct collected_reflog *e = collected.e[i]; | |
b729effb | 582 | set_reflog_expiry_param(&cb.cmd, explicit_expiry, e->reflog); |
0155f710 | 583 | status |= reflog_expire(e->reflog, &e->oid, flags, |
fa5b1830 MH |
584 | reflog_expiry_prepare, |
585 | should_expire_reflog_ent, | |
586 | reflog_expiry_cleanup, | |
587 | &cb); | |
bda3a31c JH |
588 | free(e); |
589 | } | |
590 | free(collected.e); | |
591 | } | |
592 | ||
90fb46ec PB |
593 | for (; i < argc; i++) { |
594 | char *ref; | |
b8acac54 | 595 | struct object_id oid; |
334dc52f | 596 | if (!dwim_log(argv[i], strlen(argv[i]), &oid, &ref)) { |
90fb46ec | 597 | status |= error("%s points nowhere!", argv[i]); |
4264dc15 JH |
598 | continue; |
599 | } | |
b729effb | 600 | set_reflog_expiry_param(&cb.cmd, explicit_expiry, ref); |
0155f710 | 601 | status |= reflog_expire(ref, &oid, flags, |
fa5b1830 MH |
602 | reflog_expiry_prepare, |
603 | should_expire_reflog_ent, | |
604 | reflog_expiry_cleanup, | |
605 | &cb); | |
4264dc15 JH |
606 | } |
607 | return status; | |
608 | } | |
609 | ||
9461d272 | 610 | static int count_reflog_ent(struct object_id *ooid, struct object_id *noid, |
dddbad72 | 611 | const char *email, timestamp_t timestamp, int tz, |
552cecc2 JS |
612 | const char *message, void *cb_data) |
613 | { | |
b729effb MH |
614 | struct expire_reflog_policy_cb *cb = cb_data; |
615 | if (!cb->cmd.expire_total || timestamp < cb->cmd.expire_total) | |
616 | cb->cmd.recno++; | |
552cecc2 JS |
617 | return 0; |
618 | } | |
619 | ||
620 | static int cmd_reflog_delete(int argc, const char **argv, const char *prefix) | |
621 | { | |
b729effb | 622 | struct expire_reflog_policy_cb cb; |
552cecc2 | 623 | int i, status = 0; |
aba56c89 | 624 | unsigned int flags = 0; |
552cecc2 | 625 | |
552cecc2 JS |
626 | memset(&cb, 0, sizeof(cb)); |
627 | ||
628 | for (i = 1; i < argc; i++) { | |
3c386aa3 BC |
629 | const char *arg = argv[i]; |
630 | if (!strcmp(arg, "--dry-run") || !strcmp(arg, "-n")) | |
98f31d85 | 631 | flags |= EXPIRE_REFLOGS_DRY_RUN; |
2b81fab2 | 632 | else if (!strcmp(arg, "--rewrite")) |
553daf13 | 633 | flags |= EXPIRE_REFLOGS_REWRITE; |
55f10565 | 634 | else if (!strcmp(arg, "--updateref")) |
c4c4fbf8 | 635 | flags |= EXPIRE_REFLOGS_UPDATE_REF; |
3c386aa3 | 636 | else if (!strcmp(arg, "--verbose")) |
bc11155c | 637 | flags |= EXPIRE_REFLOGS_VERBOSE; |
3c386aa3 BC |
638 | else if (!strcmp(arg, "--")) { |
639 | i++; | |
640 | break; | |
641 | } | |
642 | else if (arg[0] == '-') | |
643 | usage(reflog_delete_usage); | |
644 | else | |
645 | break; | |
646 | } | |
647 | ||
648 | if (argc - i < 1) | |
649 | return error("Nothing to delete?"); | |
650 | ||
651 | for ( ; i < argc; i++) { | |
552cecc2 | 652 | const char *spec = strstr(argv[i], "@{"); |
b8acac54 | 653 | struct object_id oid; |
552cecc2 JS |
654 | char *ep, *ref; |
655 | int recno; | |
656 | ||
657 | if (!spec) { | |
cb97cc9f | 658 | status |= error("Not a reflog: %s", argv[i]); |
552cecc2 JS |
659 | continue; |
660 | } | |
661 | ||
334dc52f | 662 | if (!dwim_log(argv[i], spec - argv[i], &oid, &ref)) { |
55beff4f | 663 | status |= error("no reflog for '%s'", argv[i]); |
552cecc2 JS |
664 | continue; |
665 | } | |
666 | ||
667 | recno = strtoul(spec + 2, &ep, 10); | |
668 | if (*ep == '}') { | |
b729effb | 669 | cb.cmd.recno = -recno; |
552cecc2 JS |
670 | for_each_reflog_ent(ref, count_reflog_ent, &cb); |
671 | } else { | |
b729effb | 672 | cb.cmd.expire_total = approxidate(spec + 2); |
552cecc2 | 673 | for_each_reflog_ent(ref, count_reflog_ent, &cb); |
b729effb | 674 | cb.cmd.expire_total = 0; |
552cecc2 JS |
675 | } |
676 | ||
0155f710 | 677 | status |= reflog_expire(ref, &oid, flags, |
fa5b1830 MH |
678 | reflog_expiry_prepare, |
679 | should_expire_reflog_ent, | |
680 | reflog_expiry_cleanup, | |
681 | &cb); | |
552cecc2 JS |
682 | free(ref); |
683 | } | |
684 | return status; | |
685 | } | |
686 | ||
afcb2e7a DT |
687 | static int cmd_reflog_exists(int argc, const char **argv, const char *prefix) |
688 | { | |
689 | int i, start = 0; | |
690 | ||
691 | for (i = 1; i < argc; i++) { | |
692 | const char *arg = argv[i]; | |
693 | if (!strcmp(arg, "--")) { | |
694 | i++; | |
695 | break; | |
696 | } | |
697 | else if (arg[0] == '-') | |
698 | usage(reflog_exists_usage); | |
699 | else | |
700 | break; | |
701 | } | |
702 | ||
703 | start = i; | |
704 | ||
705 | if (argc - start != 1) | |
706 | usage(reflog_exists_usage); | |
707 | ||
708 | if (check_refname_format(argv[start], REFNAME_ALLOW_ONELEVEL)) | |
709 | die("invalid ref format: %s", argv[start]); | |
710 | return !reflog_exists(argv[start]); | |
711 | } | |
712 | ||
1389d9dd JH |
713 | /* |
714 | * main "reflog" | |
715 | */ | |
716 | ||
4264dc15 | 717 | static const char reflog_usage[] = |
afcb2e7a | 718 | "git reflog [ show | expire | delete | exists ]"; |
4264dc15 JH |
719 | |
720 | int cmd_reflog(int argc, const char **argv, const char *prefix) | |
721 | { | |
99caeed0 JN |
722 | if (argc > 1 && !strcmp(argv[1], "-h")) |
723 | usage(reflog_usage); | |
724 | ||
cf39f54e LT |
725 | /* With no command, we default to showing it. */ |
726 | if (argc < 2 || *argv[1] == '-') | |
727 | return cmd_log_reflog(argc, argv, prefix); | |
728 | ||
729 | if (!strcmp(argv[1], "show")) | |
730 | return cmd_log_reflog(argc - 1, argv + 1, prefix); | |
731 | ||
732 | if (!strcmp(argv[1], "expire")) | |
4264dc15 | 733 | return cmd_reflog_expire(argc - 1, argv + 1, prefix); |
cf39f54e | 734 | |
552cecc2 JS |
735 | if (!strcmp(argv[1], "delete")) |
736 | return cmd_reflog_delete(argc - 1, argv + 1, prefix); | |
737 | ||
afcb2e7a DT |
738 | if (!strcmp(argv[1], "exists")) |
739 | return cmd_reflog_exists(argc - 1, argv + 1, prefix); | |
740 | ||
bf01d4a3 | 741 | return cmd_log_reflog(argc, argv, prefix); |
4264dc15 | 742 | } |