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Commit | Line | Data |
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61a7b982 | 1 | #include "git-compat-util.h" |
0b027f6c | 2 | #include "abspath.h" |
36bf1958 | 3 | #include "alloc.h" |
32a8f510 | 4 | #include "environment.h" |
f394e093 | 5 | #include "gettext.h" |
c339932b | 6 | #include "path.h" |
b337172c | 7 | #include "repository.h" |
ac6c561b | 8 | #include "refs.h" |
e38da487 | 9 | #include "setup.h" |
ac6c561b MR |
10 | #include "strbuf.h" |
11 | #include "worktree.h" | |
750e8a60 | 12 | #include "dir.h" |
8d9fdd70 | 13 | #include "wt-status.h" |
615a84ad | 14 | #include "config.h" |
d5ebb50d | 15 | #include "wrapper.h" |
ac6c561b | 16 | |
51934904 MR |
17 | void free_worktrees(struct worktree **worktrees) |
18 | { | |
19 | int i = 0; | |
20 | ||
21 | for (i = 0; worktrees[i]; i++) { | |
22 | free(worktrees[i]->path); | |
69dfe3b9 | 23 | free(worktrees[i]->id); |
92718b74 | 24 | free(worktrees[i]->head_ref); |
346ef530 | 25 | free(worktrees[i]->lock_reason); |
fc0c7d5e | 26 | free(worktrees[i]->prune_reason); |
51934904 MR |
27 | free(worktrees[i]); |
28 | } | |
29 | free (worktrees); | |
30 | } | |
31 | ||
92718b74 | 32 | /** |
cfaf9f05 | 33 | * Update head_oid, head_ref and is_detached of the given worktree |
92718b74 | 34 | */ |
fa099d23 | 35 | static void add_head_info(struct worktree *wt) |
92718b74 | 36 | { |
fa099d23 NTND |
37 | int flags; |
38 | const char *target; | |
39 | ||
f1da24ca | 40 | target = refs_resolve_ref_unsafe(get_worktree_ref_store(wt), |
fa099d23 | 41 | "HEAD", |
31824d18 | 42 | 0, |
ce14de03 | 43 | &wt->head_oid, &flags); |
fa099d23 NTND |
44 | if (!target) |
45 | return; | |
46 | ||
47 | if (flags & REF_ISSYMREF) | |
48 | wt->head_ref = xstrdup(target); | |
49 | else | |
50 | wt->is_detached = 1; | |
92718b74 MR |
51 | } |
52 | ||
51934904 MR |
53 | /** |
54 | * get the main worktree | |
55 | */ | |
56 | static struct worktree *get_main_worktree(void) | |
1ceb7f90 | 57 | { |
51934904 | 58 | struct worktree *worktree = NULL; |
51934904 | 59 | struct strbuf worktree_path = STRBUF_INIT; |
1ceb7f90 | 60 | |
918d8ff7 ES |
61 | strbuf_add_real_path(&worktree_path, get_git_common_dir()); |
62 | strbuf_strip_suffix(&worktree_path, "/.git"); | |
51934904 | 63 | |
ca56dadb | 64 | CALLOC_ARRAY(worktree, 1); |
92718b74 | 65 | worktree->path = strbuf_detach(&worktree_path, NULL); |
f3534c98 JT |
66 | /* |
67 | * NEEDSWORK: If this function is called from a secondary worktree and | |
68 | * config.worktree is present, is_bare_repository_cfg will reflect the | |
69 | * contents of config.worktree, not the contents of the main worktree. | |
70 | * This means that worktree->is_bare may be set to 0 even if the main | |
71 | * worktree is configured to be bare. | |
72 | */ | |
73 | worktree->is_bare = (is_bare_repository_cfg == 1) || | |
74 | is_bare_repository(); | |
fa099d23 | 75 | add_head_info(worktree); |
51934904 | 76 | return worktree; |
1ceb7f90 MR |
77 | } |
78 | ||
51934904 | 79 | static struct worktree *get_linked_worktree(const char *id) |
ac6c561b | 80 | { |
51934904 | 81 | struct worktree *worktree = NULL; |
ac6c561b | 82 | struct strbuf path = STRBUF_INIT; |
51934904 | 83 | struct strbuf worktree_path = STRBUF_INIT; |
ac6c561b | 84 | |
1ceb7f90 MR |
85 | if (!id) |
86 | die("Missing linked worktree name"); | |
ac6c561b | 87 | |
b337172c | 88 | strbuf_git_common_path(&path, the_repository, "worktrees/%s/gitdir", id); |
51934904 MR |
89 | if (strbuf_read_file(&worktree_path, path.buf, 0) <= 0) |
90 | /* invalid gitdir file */ | |
ac6c561b | 91 | goto done; |
51934904 | 92 | strbuf_rtrim(&worktree_path); |
1c4854ec | 93 | strbuf_strip_suffix(&worktree_path, "/.git"); |
51934904 | 94 | |
ca56dadb | 95 | CALLOC_ARRAY(worktree, 1); |
92718b74 | 96 | worktree->path = strbuf_detach(&worktree_path, NULL); |
69dfe3b9 | 97 | worktree->id = xstrdup(id); |
fa099d23 | 98 | add_head_info(worktree); |
ac6c561b | 99 | |
ac6c561b MR |
100 | done: |
101 | strbuf_release(&path); | |
51934904 | 102 | strbuf_release(&worktree_path); |
51934904 | 103 | return worktree; |
ac6c561b MR |
104 | } |
105 | ||
750e8a60 NTND |
106 | static void mark_current_worktree(struct worktree **worktrees) |
107 | { | |
0aaad415 | 108 | char *git_dir = absolute_pathdup(get_git_dir()); |
750e8a60 NTND |
109 | int i; |
110 | ||
750e8a60 NTND |
111 | for (i = 0; worktrees[i]; i++) { |
112 | struct worktree *wt = worktrees[i]; | |
360af2da NTND |
113 | const char *wt_git_dir = get_worktree_git_dir(wt); |
114 | ||
115 | if (!fspathcmp(git_dir, absolute_path(wt_git_dir))) { | |
116 | wt->is_current = 1; | |
750e8a60 | 117 | break; |
360af2da | 118 | } |
750e8a60 | 119 | } |
360af2da | 120 | free(git_dir); |
750e8a60 NTND |
121 | } |
122 | ||
03f2465b | 123 | struct worktree **get_worktrees(void) |
ac6c561b | 124 | { |
51934904 | 125 | struct worktree **list = NULL; |
ac6c561b MR |
126 | struct strbuf path = STRBUF_INIT; |
127 | DIR *dir; | |
128 | struct dirent *d; | |
51934904 MR |
129 | int counter = 0, alloc = 2; |
130 | ||
3f64699f | 131 | ALLOC_ARRAY(list, alloc); |
ac6c561b | 132 | |
a234563a | 133 | list[counter++] = get_main_worktree(); |
ac6c561b MR |
134 | |
135 | strbuf_addf(&path, "%s/worktrees", get_git_common_dir()); | |
136 | dir = opendir(path.buf); | |
137 | strbuf_release(&path); | |
51934904 | 138 | if (dir) { |
b548f0f1 | 139 | while ((d = readdir_skip_dot_and_dotdot(dir)) != NULL) { |
51934904 | 140 | struct worktree *linked = NULL; |
ac6c561b | 141 | |
d4cddd66 NTND |
142 | if ((linked = get_linked_worktree(d->d_name))) { |
143 | ALLOC_GROW(list, counter + 1, alloc); | |
144 | list[counter++] = linked; | |
145 | } | |
51934904 MR |
146 | } |
147 | closedir(dir); | |
148 | } | |
149 | ALLOC_GROW(list, counter + 1, alloc); | |
150 | list[counter] = NULL; | |
750e8a60 NTND |
151 | |
152 | mark_current_worktree(list); | |
51934904 MR |
153 | return list; |
154 | } | |
155 | ||
69dfe3b9 NTND |
156 | const char *get_worktree_git_dir(const struct worktree *wt) |
157 | { | |
158 | if (!wt) | |
159 | return get_git_dir(); | |
160 | else if (!wt->id) | |
161 | return get_git_common_dir(); | |
162 | else | |
163 | return git_common_path("worktrees/%s", wt->id); | |
164 | } | |
165 | ||
080739ba NTND |
166 | static struct worktree *find_worktree_by_suffix(struct worktree **list, |
167 | const char *suffix) | |
168 | { | |
169 | struct worktree *found = NULL; | |
170 | int nr_found = 0, suffixlen; | |
171 | ||
172 | suffixlen = strlen(suffix); | |
173 | if (!suffixlen) | |
174 | return NULL; | |
175 | ||
176 | for (; *list && nr_found < 2; list++) { | |
177 | const char *path = (*list)->path; | |
178 | int pathlen = strlen(path); | |
179 | int start = pathlen - suffixlen; | |
180 | ||
181 | /* suffix must start at directory boundary */ | |
182 | if ((!start || (start > 0 && is_dir_sep(path[start - 1]))) && | |
183 | !fspathcmp(suffix, path + start)) { | |
184 | found = *list; | |
185 | nr_found++; | |
186 | } | |
187 | } | |
188 | return nr_found == 1 ? found : NULL; | |
189 | } | |
190 | ||
68353144 NTND |
191 | struct worktree *find_worktree(struct worktree **list, |
192 | const char *prefix, | |
193 | const char *arg) | |
194 | { | |
080739ba | 195 | struct worktree *wt; |
e4da43b1 | 196 | char *to_free = NULL; |
68353144 | 197 | |
080739ba NTND |
198 | if ((wt = find_worktree_by_suffix(list, arg))) |
199 | return wt; | |
200 | ||
e4da43b1 JK |
201 | if (prefix) |
202 | arg = to_free = prefix_filename(prefix, arg); | |
bb4995fc ES |
203 | wt = find_worktree_by_path(list, arg); |
204 | free(to_free); | |
205 | return wt; | |
206 | } | |
207 | ||
208 | struct worktree *find_worktree_by_path(struct worktree **list, const char *p) | |
209 | { | |
4530a85b | 210 | struct strbuf wt_path = STRBUF_INIT; |
bb4995fc ES |
211 | char *path = real_pathdup(p, 0); |
212 | ||
213 | if (!path) | |
4c5fa9e6 | 214 | return NULL; |
105df73e | 215 | for (; *list; list++) { |
4530a85b AM |
216 | if (!strbuf_realpath(&wt_path, (*list)->path, 0)) |
217 | continue; | |
105df73e | 218 | |
4530a85b | 219 | if (!fspathcmp(path, wt_path.buf)) |
68353144 | 220 | break; |
105df73e | 221 | } |
68353144 | 222 | free(path); |
4530a85b | 223 | strbuf_release(&wt_path); |
68353144 NTND |
224 | return *list; |
225 | } | |
226 | ||
984ad9e5 NTND |
227 | int is_main_worktree(const struct worktree *wt) |
228 | { | |
229 | return !wt->id; | |
230 | } | |
231 | ||
d236f12b | 232 | const char *worktree_lock_reason(struct worktree *wt) |
346ef530 | 233 | { |
eb36135a RS |
234 | if (is_main_worktree(wt)) |
235 | return NULL; | |
346ef530 NTND |
236 | |
237 | if (!wt->lock_reason_valid) { | |
238 | struct strbuf path = STRBUF_INIT; | |
239 | ||
240 | strbuf_addstr(&path, worktree_git_path(wt, "locked")); | |
241 | if (file_exists(path.buf)) { | |
242 | struct strbuf lock_reason = STRBUF_INIT; | |
243 | if (strbuf_read_file(&lock_reason, path.buf, 0) < 0) | |
244 | die_errno(_("failed to read '%s'"), path.buf); | |
245 | strbuf_trim(&lock_reason); | |
246 | wt->lock_reason = strbuf_detach(&lock_reason, NULL); | |
247 | } else | |
248 | wt->lock_reason = NULL; | |
249 | wt->lock_reason_valid = 1; | |
250 | strbuf_release(&path); | |
251 | } | |
252 | ||
253 | return wt->lock_reason; | |
254 | } | |
255 | ||
fc0c7d5e RS |
256 | const char *worktree_prune_reason(struct worktree *wt, timestamp_t expire) |
257 | { | |
258 | struct strbuf reason = STRBUF_INIT; | |
259 | char *path = NULL; | |
260 | ||
261 | if (is_main_worktree(wt)) | |
262 | return NULL; | |
263 | if (wt->prune_reason_valid) | |
264 | return wt->prune_reason; | |
265 | ||
266 | if (should_prune_worktree(wt->id, &reason, &path, expire)) | |
267 | wt->prune_reason = strbuf_detach(&reason, NULL); | |
268 | wt->prune_reason_valid = 1; | |
269 | ||
270 | strbuf_release(&reason); | |
271 | free(path); | |
272 | return wt->prune_reason; | |
273 | } | |
274 | ||
4ddddc1f | 275 | /* convenient wrapper to deal with NULL strbuf */ |
48ca53ca | 276 | __attribute__((format (printf, 2, 3))) |
4ddddc1f NTND |
277 | static void strbuf_addf_gently(struct strbuf *buf, const char *fmt, ...) |
278 | { | |
279 | va_list params; | |
280 | ||
281 | if (!buf) | |
282 | return; | |
283 | ||
284 | va_start(params, fmt); | |
285 | strbuf_vaddf(buf, fmt, params); | |
286 | va_end(params); | |
287 | } | |
288 | ||
ee6763af NTND |
289 | int validate_worktree(const struct worktree *wt, struct strbuf *errmsg, |
290 | unsigned flags) | |
4ddddc1f NTND |
291 | { |
292 | struct strbuf wt_path = STRBUF_INIT; | |
3d7747e3 | 293 | struct strbuf realpath = STRBUF_INIT; |
4ddddc1f NTND |
294 | char *path = NULL; |
295 | int err, ret = -1; | |
296 | ||
297 | strbuf_addf(&wt_path, "%s/.git", wt->path); | |
298 | ||
299 | if (is_main_worktree(wt)) { | |
300 | if (is_directory(wt_path.buf)) { | |
301 | ret = 0; | |
302 | goto done; | |
303 | } | |
304 | /* | |
305 | * Main worktree using .git file to point to the | |
306 | * repository would make it impossible to know where | |
307 | * the actual worktree is if this function is executed | |
308 | * from another worktree. No .git file support for now. | |
309 | */ | |
310 | strbuf_addf_gently(errmsg, | |
311 | _("'%s' at main working tree is not the repository directory"), | |
312 | wt_path.buf); | |
313 | goto done; | |
314 | } | |
315 | ||
316 | /* | |
317 | * Make sure "gitdir" file points to a real .git file and that | |
318 | * file points back here. | |
319 | */ | |
320 | if (!is_absolute_path(wt->path)) { | |
321 | strbuf_addf_gently(errmsg, | |
322 | _("'%s' file does not contain absolute path to the working tree location"), | |
323 | git_common_path("worktrees/%s/gitdir", wt->id)); | |
324 | goto done; | |
325 | } | |
326 | ||
ee6763af NTND |
327 | if (flags & WT_VALIDATE_WORKTREE_MISSING_OK && |
328 | !file_exists(wt->path)) { | |
329 | ret = 0; | |
330 | goto done; | |
331 | } | |
332 | ||
4ddddc1f NTND |
333 | if (!file_exists(wt_path.buf)) { |
334 | strbuf_addf_gently(errmsg, _("'%s' does not exist"), wt_path.buf); | |
335 | goto done; | |
336 | } | |
337 | ||
338 | path = xstrdup_or_null(read_gitfile_gently(wt_path.buf, &err)); | |
339 | if (!path) { | |
340 | strbuf_addf_gently(errmsg, _("'%s' is not a .git file, error code %d"), | |
341 | wt_path.buf, err); | |
342 | goto done; | |
343 | } | |
344 | ||
3d7747e3 AM |
345 | strbuf_realpath(&realpath, git_common_path("worktrees/%s", wt->id), 1); |
346 | ret = fspathcmp(path, realpath.buf); | |
4ddddc1f NTND |
347 | |
348 | if (ret) | |
349 | strbuf_addf_gently(errmsg, _("'%s' does not point back to '%s'"), | |
350 | wt->path, git_common_path("worktrees/%s", wt->id)); | |
351 | done: | |
352 | free(path); | |
353 | strbuf_release(&wt_path); | |
3d7747e3 | 354 | strbuf_release(&realpath); |
4ddddc1f NTND |
355 | return ret; |
356 | } | |
357 | ||
9c620fc7 NTND |
358 | void update_worktree_location(struct worktree *wt, const char *path_) |
359 | { | |
360 | struct strbuf path = STRBUF_INIT; | |
361 | ||
362 | if (is_main_worktree(wt)) | |
033abf97 | 363 | BUG("can't relocate main worktree"); |
9c620fc7 NTND |
364 | |
365 | strbuf_realpath(&path, path_, 1); | |
366 | if (fspathcmp(wt->path, path.buf)) { | |
367 | write_file(git_common_path("worktrees/%s/gitdir", wt->id), | |
368 | "%s/.git", path.buf); | |
369 | free(wt->path); | |
370 | wt->path = strbuf_detach(&path, NULL); | |
371 | } | |
372 | strbuf_release(&path); | |
373 | } | |
374 | ||
14ace5b7 NTND |
375 | int is_worktree_being_rebased(const struct worktree *wt, |
376 | const char *target) | |
8d9fdd70 NTND |
377 | { |
378 | struct wt_status_state state; | |
379 | int found_rebase; | |
380 | ||
381 | memset(&state, 0, sizeof(state)); | |
382 | found_rebase = wt_status_check_rebase(wt, &state) && | |
a46d1f73 MÅ |
383 | (state.rebase_in_progress || |
384 | state.rebase_interactive_in_progress) && | |
385 | state.branch && | |
386 | skip_prefix(target, "refs/heads/", &target) && | |
387 | !strcmp(state.branch, target); | |
962dd7eb | 388 | wt_status_state_free_buffers(&state); |
8d9fdd70 NTND |
389 | return found_rebase; |
390 | } | |
391 | ||
14ace5b7 NTND |
392 | int is_worktree_being_bisected(const struct worktree *wt, |
393 | const char *target) | |
51934904 | 394 | { |
04a3dfb8 | 395 | struct wt_status_state state; |
fb07bd42 | 396 | int found_bisect; |
04a3dfb8 NTND |
397 | |
398 | memset(&state, 0, sizeof(state)); | |
fb07bd42 MÅ |
399 | found_bisect = wt_status_check_bisect(wt, &state) && |
400 | state.branch && | |
a46d1f73 MÅ |
401 | skip_prefix(target, "refs/heads/", &target) && |
402 | !strcmp(state.branch, target); | |
962dd7eb | 403 | wt_status_state_free_buffers(&state); |
fb07bd42 | 404 | return found_bisect; |
04a3dfb8 NTND |
405 | } |
406 | ||
8d9fdd70 NTND |
407 | /* |
408 | * note: this function should be able to detect shared symref even if | |
409 | * HEAD is temporarily detached (e.g. in the middle of rebase or | |
410 | * bisect). New commands that do similar things should update this | |
411 | * function as well. | |
412 | */ | |
662078ca RJ |
413 | int is_shared_symref(const struct worktree *wt, const char *symref, |
414 | const char *target) | |
51934904 | 415 | { |
662078ca RJ |
416 | const char *symref_target; |
417 | struct ref_store *refs; | |
418 | int flags; | |
51934904 | 419 | |
662078ca RJ |
420 | if (wt->is_bare) |
421 | return 0; | |
fa099d23 | 422 | |
662078ca RJ |
423 | if (wt->is_detached && !strcmp(symref, "HEAD")) { |
424 | if (is_worktree_being_rebased(wt, target)) | |
425 | return 1; | |
426 | if (is_worktree_being_bisected(wt, target)) | |
427 | return 1; | |
428 | } | |
c8717148 | 429 | |
662078ca RJ |
430 | refs = get_worktree_ref_store(wt); |
431 | symref_target = refs_resolve_ref_unsafe(refs, symref, 0, | |
432 | NULL, &flags); | |
433 | if ((flags & REF_ISSYMREF) && | |
434 | symref_target && !strcmp(symref_target, target)) | |
435 | return 1; | |
8d9fdd70 | 436 | |
662078ca RJ |
437 | return 0; |
438 | } | |
439 | ||
440 | const struct worktree *find_shared_symref(struct worktree **worktrees, | |
441 | const char *symref, | |
442 | const char *target) | |
443 | { | |
444 | ||
faa4d598 | 445 | for (int i = 0; worktrees[i]; i++) |
662078ca RJ |
446 | if (is_shared_symref(worktrees[i], symref, target)) |
447 | return worktrees[i]; | |
51934904 | 448 | |
662078ca | 449 | return NULL; |
ac6c561b | 450 | } |
1a248cf2 SB |
451 | |
452 | int submodule_uses_worktrees(const char *path) | |
453 | { | |
454 | char *submodule_gitdir; | |
e02a7141 | 455 | struct strbuf sb = STRBUF_INIT, err = STRBUF_INIT; |
1a248cf2 SB |
456 | DIR *dir; |
457 | struct dirent *d; | |
7c4be458 | 458 | int ret = 0; |
e8805af1 | 459 | struct repository_format format = REPOSITORY_FORMAT_INIT; |
1a248cf2 SB |
460 | |
461 | submodule_gitdir = git_pathdup_submodule(path, "%s", ""); | |
462 | if (!submodule_gitdir) | |
463 | return 0; | |
464 | ||
465 | /* The env would be set for the superproject. */ | |
466 | get_common_dir_noenv(&sb, submodule_gitdir); | |
d32de66a | 467 | free(submodule_gitdir); |
1a248cf2 | 468 | |
1a248cf2 SB |
469 | strbuf_addstr(&sb, "/config"); |
470 | read_repository_format(&format, sb.buf); | |
e02a7141 | 471 | if (verify_repository_format(&format, &err)) { |
472 | strbuf_release(&err); | |
1a248cf2 | 473 | strbuf_release(&sb); |
e8805af1 | 474 | clear_repository_format(&format); |
1a248cf2 SB |
475 | return 1; |
476 | } | |
e8805af1 | 477 | clear_repository_format(&format); |
e02a7141 | 478 | strbuf_release(&err); |
1a248cf2 SB |
479 | |
480 | /* Replace config by worktrees. */ | |
481 | strbuf_setlen(&sb, sb.len - strlen("config")); | |
482 | strbuf_addstr(&sb, "worktrees"); | |
483 | ||
484 | /* See if there is any file inside the worktrees directory. */ | |
485 | dir = opendir(sb.buf); | |
486 | strbuf_release(&sb); | |
1a248cf2 SB |
487 | |
488 | if (!dir) | |
489 | return 0; | |
490 | ||
b548f0f1 | 491 | d = readdir_skip_dot_and_dotdot(dir); |
afe8a907 | 492 | if (d) |
1a248cf2 | 493 | ret = 1; |
1a248cf2 SB |
494 | closedir(dir); |
495 | return ret; | |
496 | } | |
d0c39a49 | 497 | |
ab3e1f78 NTND |
498 | void strbuf_worktree_ref(const struct worktree *wt, |
499 | struct strbuf *sb, | |
500 | const char *refname) | |
501 | { | |
71e54734 HWN |
502 | if (parse_worktree_ref(refname, NULL, NULL, NULL) == |
503 | REF_WORKTREE_CURRENT && | |
504 | wt && !wt->is_current) { | |
505 | if (is_main_worktree(wt)) | |
506 | strbuf_addstr(sb, "main-worktree/"); | |
507 | else | |
508 | strbuf_addf(sb, "worktrees/%s/", wt->id); | |
ab3e1f78 NTND |
509 | } |
510 | strbuf_addstr(sb, refname); | |
511 | } | |
512 | ||
d0c39a49 NTND |
513 | int other_head_refs(each_ref_fn fn, void *cb_data) |
514 | { | |
515 | struct worktree **worktrees, **p; | |
ef2d5547 | 516 | struct strbuf refname = STRBUF_INIT; |
d0c39a49 NTND |
517 | int ret = 0; |
518 | ||
03f2465b | 519 | worktrees = get_worktrees(); |
d0c39a49 NTND |
520 | for (p = worktrees; *p; p++) { |
521 | struct worktree *wt = *p; | |
ab3e1f78 NTND |
522 | struct object_id oid; |
523 | int flag; | |
d0c39a49 NTND |
524 | |
525 | if (wt->is_current) | |
526 | continue; | |
527 | ||
ef2d5547 MÅ |
528 | strbuf_reset(&refname); |
529 | strbuf_worktree_ref(wt, &refname, "HEAD"); | |
f1da24ca | 530 | if (refs_resolve_ref_unsafe(get_main_ref_store(the_repository), |
76887df0 ÆAB |
531 | refname.buf, |
532 | RESOLVE_REF_READING, | |
ce14de03 | 533 | &oid, &flag)) |
ef2d5547 | 534 | ret = fn(refname.buf, &oid, flag, cb_data); |
d0c39a49 NTND |
535 | if (ret) |
536 | break; | |
537 | } | |
538 | free_worktrees(worktrees); | |
ef2d5547 | 539 | strbuf_release(&refname); |
d0c39a49 NTND |
540 | return ret; |
541 | } | |
bdd1f3e4 ES |
542 | |
543 | /* | |
544 | * Repair worktree's /path/to/worktree/.git file if missing, corrupt, or not | |
545 | * pointing at <repo>/worktrees/<id>. | |
546 | */ | |
547 | static void repair_gitfile(struct worktree *wt, | |
548 | worktree_repair_fn fn, void *cb_data) | |
549 | { | |
550 | struct strbuf dotgit = STRBUF_INIT; | |
551 | struct strbuf repo = STRBUF_INIT; | |
552 | char *backlink; | |
553 | const char *repair = NULL; | |
554 | int err; | |
555 | ||
556 | /* missing worktree can't be repaired */ | |
557 | if (!file_exists(wt->path)) | |
558 | return; | |
559 | ||
560 | if (!is_directory(wt->path)) { | |
561 | fn(1, wt->path, _("not a directory"), cb_data); | |
562 | return; | |
563 | } | |
564 | ||
565 | strbuf_realpath(&repo, git_common_path("worktrees/%s", wt->id), 1); | |
566 | strbuf_addf(&dotgit, "%s/.git", wt->path); | |
567 | backlink = xstrdup_or_null(read_gitfile_gently(dotgit.buf, &err)); | |
568 | ||
569 | if (err == READ_GITFILE_ERR_NOT_A_FILE) | |
570 | fn(1, wt->path, _(".git is not a file"), cb_data); | |
571 | else if (err) | |
572 | repair = _(".git file broken"); | |
573 | else if (fspathcmp(backlink, repo.buf)) | |
574 | repair = _(".git file incorrect"); | |
575 | ||
576 | if (repair) { | |
577 | fn(0, wt->path, repair, cb_data); | |
578 | write_file(dotgit.buf, "gitdir: %s", repo.buf); | |
579 | } | |
580 | ||
581 | free(backlink); | |
582 | strbuf_release(&repo); | |
583 | strbuf_release(&dotgit); | |
584 | } | |
585 | ||
586 | static void repair_noop(int iserr, const char *path, const char *msg, | |
587 | void *cb_data) | |
588 | { | |
589 | /* nothing */ | |
590 | } | |
591 | ||
592 | void repair_worktrees(worktree_repair_fn fn, void *cb_data) | |
593 | { | |
594 | struct worktree **worktrees = get_worktrees(); | |
595 | struct worktree **wt = worktrees + 1; /* +1 skips main worktree */ | |
596 | ||
597 | if (!fn) | |
598 | fn = repair_noop; | |
599 | for (; *wt; wt++) | |
600 | repair_gitfile(*wt, fn, cb_data); | |
601 | free_worktrees(worktrees); | |
602 | } | |
b214ab5a ES |
603 | |
604 | static int is_main_worktree_path(const char *path) | |
605 | { | |
606 | struct strbuf target = STRBUF_INIT; | |
607 | struct strbuf maindir = STRBUF_INIT; | |
608 | int cmp; | |
609 | ||
610 | strbuf_add_real_path(&target, path); | |
611 | strbuf_strip_suffix(&target, "/.git"); | |
612 | strbuf_add_real_path(&maindir, get_git_common_dir()); | |
613 | strbuf_strip_suffix(&maindir, "/.git"); | |
614 | cmp = fspathcmp(maindir.buf, target.buf); | |
615 | ||
616 | strbuf_release(&maindir); | |
617 | strbuf_release(&target); | |
618 | return !cmp; | |
619 | } | |
620 | ||
cf76baea ES |
621 | /* |
622 | * If both the main worktree and linked worktree have been moved, then the | |
623 | * gitfile /path/to/worktree/.git won't point into the repository, thus we | |
624 | * won't know which <repo>/worktrees/<id>/gitdir to repair. However, we may | |
625 | * be able to infer the gitdir by manually reading /path/to/worktree/.git, | |
626 | * extracting the <id>, and checking if <repo>/worktrees/<id> exists. | |
627 | */ | |
628 | static char *infer_backlink(const char *gitfile) | |
629 | { | |
630 | struct strbuf actual = STRBUF_INIT; | |
631 | struct strbuf inferred = STRBUF_INIT; | |
632 | const char *id; | |
633 | ||
634 | if (strbuf_read_file(&actual, gitfile, 0) < 0) | |
635 | goto error; | |
636 | if (!starts_with(actual.buf, "gitdir:")) | |
637 | goto error; | |
638 | if (!(id = find_last_dir_sep(actual.buf))) | |
639 | goto error; | |
640 | strbuf_trim(&actual); | |
641 | id++; /* advance past '/' to point at <id> */ | |
642 | if (!*id) | |
643 | goto error; | |
644 | strbuf_git_common_path(&inferred, the_repository, "worktrees/%s", id); | |
645 | if (!is_directory(inferred.buf)) | |
646 | goto error; | |
647 | ||
648 | strbuf_release(&actual); | |
649 | return strbuf_detach(&inferred, NULL); | |
650 | ||
651 | error: | |
652 | strbuf_release(&actual); | |
653 | strbuf_release(&inferred); | |
654 | return NULL; | |
655 | } | |
656 | ||
b214ab5a ES |
657 | /* |
658 | * Repair <repo>/worktrees/<id>/gitdir if missing, corrupt, or not pointing at | |
659 | * the worktree's path. | |
660 | */ | |
661 | void repair_worktree_at_path(const char *path, | |
662 | worktree_repair_fn fn, void *cb_data) | |
663 | { | |
664 | struct strbuf dotgit = STRBUF_INIT; | |
665 | struct strbuf realdotgit = STRBUF_INIT; | |
666 | struct strbuf gitdir = STRBUF_INIT; | |
667 | struct strbuf olddotgit = STRBUF_INIT; | |
668 | char *backlink = NULL; | |
669 | const char *repair = NULL; | |
670 | int err; | |
671 | ||
672 | if (!fn) | |
673 | fn = repair_noop; | |
674 | ||
675 | if (is_main_worktree_path(path)) | |
676 | goto done; | |
677 | ||
678 | strbuf_addf(&dotgit, "%s/.git", path); | |
679 | if (!strbuf_realpath(&realdotgit, dotgit.buf, 0)) { | |
680 | fn(1, path, _("not a valid path"), cb_data); | |
681 | goto done; | |
682 | } | |
683 | ||
684 | backlink = xstrdup_or_null(read_gitfile_gently(realdotgit.buf, &err)); | |
685 | if (err == READ_GITFILE_ERR_NOT_A_FILE) { | |
686 | fn(1, realdotgit.buf, _("unable to locate repository; .git is not a file"), cb_data); | |
687 | goto done; | |
cf76baea ES |
688 | } else if (err == READ_GITFILE_ERR_NOT_A_REPO) { |
689 | if (!(backlink = infer_backlink(realdotgit.buf))) { | |
690 | fn(1, realdotgit.buf, _("unable to locate repository; .git file does not reference a repository"), cb_data); | |
691 | goto done; | |
692 | } | |
b214ab5a ES |
693 | } else if (err) { |
694 | fn(1, realdotgit.buf, _("unable to locate repository; .git file broken"), cb_data); | |
695 | goto done; | |
696 | } | |
697 | ||
698 | strbuf_addf(&gitdir, "%s/gitdir", backlink); | |
699 | if (strbuf_read_file(&olddotgit, gitdir.buf, 0) < 0) | |
700 | repair = _("gitdir unreadable"); | |
701 | else { | |
702 | strbuf_rtrim(&olddotgit); | |
703 | if (fspathcmp(olddotgit.buf, realdotgit.buf)) | |
704 | repair = _("gitdir incorrect"); | |
705 | } | |
706 | ||
707 | if (repair) { | |
708 | fn(0, gitdir.buf, repair, cb_data); | |
709 | write_file(gitdir.buf, "%s", realdotgit.buf); | |
710 | } | |
711 | done: | |
712 | free(backlink); | |
713 | strbuf_release(&olddotgit); | |
714 | strbuf_release(&gitdir); | |
715 | strbuf_release(&realdotgit); | |
716 | strbuf_release(&dotgit); | |
717 | } | |
a29a8b75 RS |
718 | |
719 | int should_prune_worktree(const char *id, struct strbuf *reason, char **wtpath, timestamp_t expire) | |
720 | { | |
721 | struct stat st; | |
722 | char *path; | |
723 | int fd; | |
724 | size_t len; | |
725 | ssize_t read_result; | |
726 | ||
727 | *wtpath = NULL; | |
728 | if (!is_directory(git_path("worktrees/%s", id))) { | |
729 | strbuf_addstr(reason, _("not a valid directory")); | |
730 | return 1; | |
731 | } | |
732 | if (file_exists(git_path("worktrees/%s/locked", id))) | |
733 | return 0; | |
734 | if (stat(git_path("worktrees/%s/gitdir", id), &st)) { | |
735 | strbuf_addstr(reason, _("gitdir file does not exist")); | |
736 | return 1; | |
737 | } | |
738 | fd = open(git_path("worktrees/%s/gitdir", id), O_RDONLY); | |
739 | if (fd < 0) { | |
740 | strbuf_addf(reason, _("unable to read gitdir file (%s)"), | |
741 | strerror(errno)); | |
742 | return 1; | |
743 | } | |
744 | len = xsize_t(st.st_size); | |
745 | path = xmallocz(len); | |
746 | ||
747 | read_result = read_in_full(fd, path, len); | |
748 | if (read_result < 0) { | |
749 | strbuf_addf(reason, _("unable to read gitdir file (%s)"), | |
750 | strerror(errno)); | |
751 | close(fd); | |
752 | free(path); | |
753 | return 1; | |
754 | } | |
755 | close(fd); | |
756 | ||
757 | if (read_result != len) { | |
758 | strbuf_addf(reason, | |
759 | _("short read (expected %"PRIuMAX" bytes, read %"PRIuMAX")"), | |
760 | (uintmax_t)len, (uintmax_t)read_result); | |
761 | free(path); | |
762 | return 1; | |
763 | } | |
764 | while (len && (path[len - 1] == '\n' || path[len - 1] == '\r')) | |
765 | len--; | |
766 | if (!len) { | |
767 | strbuf_addstr(reason, _("invalid gitdir file")); | |
768 | free(path); | |
769 | return 1; | |
770 | } | |
771 | path[len] = '\0'; | |
772 | if (!file_exists(path)) { | |
773 | if (stat(git_path("worktrees/%s/index", id), &st) || | |
774 | st.st_mtime <= expire) { | |
775 | strbuf_addstr(reason, _("gitdir file points to non-existent location")); | |
776 | free(path); | |
777 | return 1; | |
778 | } else { | |
779 | *wtpath = path; | |
780 | return 0; | |
781 | } | |
782 | } | |
783 | *wtpath = path; | |
784 | return 0; | |
785 | } | |
615a84ad DS |
786 | |
787 | static int move_config_setting(const char *key, const char *value, | |
788 | const char *from_file, const char *to_file) | |
789 | { | |
790 | if (git_config_set_in_file_gently(to_file, key, value)) | |
791 | return error(_("unable to set %s in '%s'"), key, to_file); | |
792 | if (git_config_set_in_file_gently(from_file, key, NULL)) | |
793 | return error(_("unable to unset %s in '%s'"), key, from_file); | |
794 | return 0; | |
795 | } | |
796 | ||
797 | int init_worktree_config(struct repository *r) | |
798 | { | |
799 | int res = 0; | |
800 | int bare = 0; | |
801 | struct config_set cs = { { 0 } }; | |
802 | const char *core_worktree; | |
803 | char *common_config_file; | |
804 | char *main_worktree_file; | |
805 | ||
806 | /* | |
807 | * If the extension is already enabled, then we can skip the | |
808 | * upgrade process. | |
809 | */ | |
3867f6d6 | 810 | if (r->repository_format_worktree_config) |
615a84ad DS |
811 | return 0; |
812 | if ((res = git_config_set_gently("extensions.worktreeConfig", "true"))) | |
813 | return error(_("failed to set extensions.worktreeConfig setting")); | |
814 | ||
815 | common_config_file = xstrfmt("%s/config", r->commondir); | |
816 | main_worktree_file = xstrfmt("%s/config.worktree", r->commondir); | |
817 | ||
818 | git_configset_init(&cs); | |
819 | git_configset_add_file(&cs, common_config_file); | |
820 | ||
821 | /* | |
822 | * If core.bare is true in the common config file, then we need to | |
823 | * move it to the main worktree's config file or it will break all | |
824 | * worktrees. If it is false, then leave it in place because it | |
825 | * _could_ be negating a global core.bare=true. | |
826 | */ | |
827 | if (!git_configset_get_bool(&cs, "core.bare", &bare) && bare) { | |
828 | if ((res = move_config_setting("core.bare", "true", | |
829 | common_config_file, | |
830 | main_worktree_file))) | |
831 | goto cleanup; | |
832 | } | |
833 | /* | |
834 | * If core.worktree is set, then the main worktree is located | |
835 | * somewhere different than the parent of the common Git dir. | |
836 | * Relocate that value to avoid breaking all worktrees with this | |
837 | * upgrade to worktree config. | |
838 | */ | |
8868b1eb | 839 | if (!git_configset_get_value(&cs, "core.worktree", &core_worktree, NULL)) { |
615a84ad DS |
840 | if ((res = move_config_setting("core.worktree", core_worktree, |
841 | common_config_file, | |
842 | main_worktree_file))) | |
843 | goto cleanup; | |
844 | } | |
845 | ||
846 | /* | |
847 | * Ensure that we use worktree config for the remaining lifetime | |
848 | * of the current process. | |
849 | */ | |
3867f6d6 | 850 | r->repository_format_worktree_config = 1; |
615a84ad DS |
851 | |
852 | cleanup: | |
853 | git_configset_clear(&cs); | |
854 | free(common_config_file); | |
855 | free(main_worktree_file); | |
856 | return res; | |
857 | } |