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Commit | Line | Data |
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61a7b982 | 1 | #include "git-compat-util.h" |
0b027f6c | 2 | #include "abspath.h" |
32a8f510 | 3 | #include "environment.h" |
f394e093 | 4 | #include "gettext.h" |
c339932b | 5 | #include "path.h" |
b337172c | 6 | #include "repository.h" |
ac6c561b | 7 | #include "refs.h" |
e38da487 | 8 | #include "setup.h" |
ac6c561b MR |
9 | #include "strbuf.h" |
10 | #include "worktree.h" | |
750e8a60 | 11 | #include "dir.h" |
8d9fdd70 | 12 | #include "wt-status.h" |
615a84ad | 13 | #include "config.h" |
ac6c561b | 14 | |
51934904 MR |
15 | void free_worktrees(struct worktree **worktrees) |
16 | { | |
17 | int i = 0; | |
18 | ||
19 | for (i = 0; worktrees[i]; i++) { | |
20 | free(worktrees[i]->path); | |
69dfe3b9 | 21 | free(worktrees[i]->id); |
92718b74 | 22 | free(worktrees[i]->head_ref); |
346ef530 | 23 | free(worktrees[i]->lock_reason); |
fc0c7d5e | 24 | free(worktrees[i]->prune_reason); |
51934904 MR |
25 | free(worktrees[i]); |
26 | } | |
27 | free (worktrees); | |
28 | } | |
29 | ||
92718b74 | 30 | /** |
cfaf9f05 | 31 | * Update head_oid, head_ref and is_detached of the given worktree |
92718b74 | 32 | */ |
fa099d23 | 33 | static void add_head_info(struct worktree *wt) |
92718b74 | 34 | { |
fa099d23 NTND |
35 | int flags; |
36 | const char *target; | |
37 | ||
f1da24ca | 38 | target = refs_resolve_ref_unsafe(get_worktree_ref_store(wt), |
fa099d23 | 39 | "HEAD", |
31824d18 | 40 | 0, |
ce14de03 | 41 | &wt->head_oid, &flags); |
fa099d23 NTND |
42 | if (!target) |
43 | return; | |
44 | ||
45 | if (flags & REF_ISSYMREF) | |
46 | wt->head_ref = xstrdup(target); | |
47 | else | |
48 | wt->is_detached = 1; | |
92718b74 MR |
49 | } |
50 | ||
51934904 MR |
51 | /** |
52 | * get the main worktree | |
53 | */ | |
54 | static struct worktree *get_main_worktree(void) | |
1ceb7f90 | 55 | { |
51934904 | 56 | struct worktree *worktree = NULL; |
51934904 | 57 | struct strbuf worktree_path = STRBUF_INIT; |
1ceb7f90 | 58 | |
918d8ff7 ES |
59 | strbuf_add_real_path(&worktree_path, get_git_common_dir()); |
60 | strbuf_strip_suffix(&worktree_path, "/.git"); | |
51934904 | 61 | |
ca56dadb | 62 | CALLOC_ARRAY(worktree, 1); |
92718b74 | 63 | worktree->path = strbuf_detach(&worktree_path, NULL); |
f3534c98 JT |
64 | /* |
65 | * NEEDSWORK: If this function is called from a secondary worktree and | |
66 | * config.worktree is present, is_bare_repository_cfg will reflect the | |
67 | * contents of config.worktree, not the contents of the main worktree. | |
68 | * This means that worktree->is_bare may be set to 0 even if the main | |
69 | * worktree is configured to be bare. | |
70 | */ | |
71 | worktree->is_bare = (is_bare_repository_cfg == 1) || | |
72 | is_bare_repository(); | |
fa099d23 | 73 | add_head_info(worktree); |
51934904 | 74 | return worktree; |
1ceb7f90 MR |
75 | } |
76 | ||
51934904 | 77 | static struct worktree *get_linked_worktree(const char *id) |
ac6c561b | 78 | { |
51934904 | 79 | struct worktree *worktree = NULL; |
ac6c561b | 80 | struct strbuf path = STRBUF_INIT; |
51934904 | 81 | struct strbuf worktree_path = STRBUF_INIT; |
ac6c561b | 82 | |
1ceb7f90 MR |
83 | if (!id) |
84 | die("Missing linked worktree name"); | |
ac6c561b | 85 | |
b337172c | 86 | strbuf_git_common_path(&path, the_repository, "worktrees/%s/gitdir", id); |
51934904 MR |
87 | if (strbuf_read_file(&worktree_path, path.buf, 0) <= 0) |
88 | /* invalid gitdir file */ | |
ac6c561b | 89 | goto done; |
51934904 | 90 | strbuf_rtrim(&worktree_path); |
1c4854ec | 91 | strbuf_strip_suffix(&worktree_path, "/.git"); |
51934904 | 92 | |
ca56dadb | 93 | CALLOC_ARRAY(worktree, 1); |
92718b74 | 94 | worktree->path = strbuf_detach(&worktree_path, NULL); |
69dfe3b9 | 95 | worktree->id = xstrdup(id); |
fa099d23 | 96 | add_head_info(worktree); |
ac6c561b | 97 | |
ac6c561b MR |
98 | done: |
99 | strbuf_release(&path); | |
51934904 | 100 | strbuf_release(&worktree_path); |
51934904 | 101 | return worktree; |
ac6c561b MR |
102 | } |
103 | ||
750e8a60 NTND |
104 | static void mark_current_worktree(struct worktree **worktrees) |
105 | { | |
0aaad415 | 106 | char *git_dir = absolute_pathdup(get_git_dir()); |
750e8a60 NTND |
107 | int i; |
108 | ||
750e8a60 NTND |
109 | for (i = 0; worktrees[i]; i++) { |
110 | struct worktree *wt = worktrees[i]; | |
360af2da NTND |
111 | const char *wt_git_dir = get_worktree_git_dir(wt); |
112 | ||
113 | if (!fspathcmp(git_dir, absolute_path(wt_git_dir))) { | |
114 | wt->is_current = 1; | |
750e8a60 | 115 | break; |
360af2da | 116 | } |
750e8a60 | 117 | } |
360af2da | 118 | free(git_dir); |
750e8a60 NTND |
119 | } |
120 | ||
03f2465b | 121 | struct worktree **get_worktrees(void) |
ac6c561b | 122 | { |
51934904 | 123 | struct worktree **list = NULL; |
ac6c561b MR |
124 | struct strbuf path = STRBUF_INIT; |
125 | DIR *dir; | |
126 | struct dirent *d; | |
51934904 MR |
127 | int counter = 0, alloc = 2; |
128 | ||
3f64699f | 129 | ALLOC_ARRAY(list, alloc); |
ac6c561b | 130 | |
a234563a | 131 | list[counter++] = get_main_worktree(); |
ac6c561b MR |
132 | |
133 | strbuf_addf(&path, "%s/worktrees", get_git_common_dir()); | |
134 | dir = opendir(path.buf); | |
135 | strbuf_release(&path); | |
51934904 | 136 | if (dir) { |
b548f0f1 | 137 | while ((d = readdir_skip_dot_and_dotdot(dir)) != NULL) { |
51934904 | 138 | struct worktree *linked = NULL; |
ac6c561b | 139 | |
d4cddd66 NTND |
140 | if ((linked = get_linked_worktree(d->d_name))) { |
141 | ALLOC_GROW(list, counter + 1, alloc); | |
142 | list[counter++] = linked; | |
143 | } | |
51934904 MR |
144 | } |
145 | closedir(dir); | |
146 | } | |
147 | ALLOC_GROW(list, counter + 1, alloc); | |
148 | list[counter] = NULL; | |
750e8a60 NTND |
149 | |
150 | mark_current_worktree(list); | |
51934904 MR |
151 | return list; |
152 | } | |
153 | ||
69dfe3b9 NTND |
154 | const char *get_worktree_git_dir(const struct worktree *wt) |
155 | { | |
156 | if (!wt) | |
157 | return get_git_dir(); | |
158 | else if (!wt->id) | |
159 | return get_git_common_dir(); | |
160 | else | |
161 | return git_common_path("worktrees/%s", wt->id); | |
162 | } | |
163 | ||
080739ba NTND |
164 | static struct worktree *find_worktree_by_suffix(struct worktree **list, |
165 | const char *suffix) | |
166 | { | |
167 | struct worktree *found = NULL; | |
168 | int nr_found = 0, suffixlen; | |
169 | ||
170 | suffixlen = strlen(suffix); | |
171 | if (!suffixlen) | |
172 | return NULL; | |
173 | ||
174 | for (; *list && nr_found < 2; list++) { | |
175 | const char *path = (*list)->path; | |
176 | int pathlen = strlen(path); | |
177 | int start = pathlen - suffixlen; | |
178 | ||
179 | /* suffix must start at directory boundary */ | |
180 | if ((!start || (start > 0 && is_dir_sep(path[start - 1]))) && | |
181 | !fspathcmp(suffix, path + start)) { | |
182 | found = *list; | |
183 | nr_found++; | |
184 | } | |
185 | } | |
186 | return nr_found == 1 ? found : NULL; | |
187 | } | |
188 | ||
68353144 NTND |
189 | struct worktree *find_worktree(struct worktree **list, |
190 | const char *prefix, | |
191 | const char *arg) | |
192 | { | |
080739ba | 193 | struct worktree *wt; |
e4da43b1 | 194 | char *to_free = NULL; |
68353144 | 195 | |
080739ba NTND |
196 | if ((wt = find_worktree_by_suffix(list, arg))) |
197 | return wt; | |
198 | ||
e4da43b1 JK |
199 | if (prefix) |
200 | arg = to_free = prefix_filename(prefix, arg); | |
bb4995fc ES |
201 | wt = find_worktree_by_path(list, arg); |
202 | free(to_free); | |
203 | return wt; | |
204 | } | |
205 | ||
206 | struct worktree *find_worktree_by_path(struct worktree **list, const char *p) | |
207 | { | |
4530a85b | 208 | struct strbuf wt_path = STRBUF_INIT; |
bb4995fc ES |
209 | char *path = real_pathdup(p, 0); |
210 | ||
211 | if (!path) | |
4c5fa9e6 | 212 | return NULL; |
105df73e | 213 | for (; *list; list++) { |
4530a85b AM |
214 | if (!strbuf_realpath(&wt_path, (*list)->path, 0)) |
215 | continue; | |
105df73e | 216 | |
4530a85b | 217 | if (!fspathcmp(path, wt_path.buf)) |
68353144 | 218 | break; |
105df73e | 219 | } |
68353144 | 220 | free(path); |
4530a85b | 221 | strbuf_release(&wt_path); |
68353144 NTND |
222 | return *list; |
223 | } | |
224 | ||
984ad9e5 NTND |
225 | int is_main_worktree(const struct worktree *wt) |
226 | { | |
227 | return !wt->id; | |
228 | } | |
229 | ||
d236f12b | 230 | const char *worktree_lock_reason(struct worktree *wt) |
346ef530 | 231 | { |
eb36135a RS |
232 | if (is_main_worktree(wt)) |
233 | return NULL; | |
346ef530 NTND |
234 | |
235 | if (!wt->lock_reason_valid) { | |
236 | struct strbuf path = STRBUF_INIT; | |
237 | ||
238 | strbuf_addstr(&path, worktree_git_path(wt, "locked")); | |
239 | if (file_exists(path.buf)) { | |
240 | struct strbuf lock_reason = STRBUF_INIT; | |
241 | if (strbuf_read_file(&lock_reason, path.buf, 0) < 0) | |
242 | die_errno(_("failed to read '%s'"), path.buf); | |
243 | strbuf_trim(&lock_reason); | |
244 | wt->lock_reason = strbuf_detach(&lock_reason, NULL); | |
245 | } else | |
246 | wt->lock_reason = NULL; | |
247 | wt->lock_reason_valid = 1; | |
248 | strbuf_release(&path); | |
249 | } | |
250 | ||
251 | return wt->lock_reason; | |
252 | } | |
253 | ||
fc0c7d5e RS |
254 | const char *worktree_prune_reason(struct worktree *wt, timestamp_t expire) |
255 | { | |
256 | struct strbuf reason = STRBUF_INIT; | |
257 | char *path = NULL; | |
258 | ||
259 | if (is_main_worktree(wt)) | |
260 | return NULL; | |
261 | if (wt->prune_reason_valid) | |
262 | return wt->prune_reason; | |
263 | ||
264 | if (should_prune_worktree(wt->id, &reason, &path, expire)) | |
265 | wt->prune_reason = strbuf_detach(&reason, NULL); | |
266 | wt->prune_reason_valid = 1; | |
267 | ||
268 | strbuf_release(&reason); | |
269 | free(path); | |
270 | return wt->prune_reason; | |
271 | } | |
272 | ||
4ddddc1f | 273 | /* convenient wrapper to deal with NULL strbuf */ |
48ca53ca | 274 | __attribute__((format (printf, 2, 3))) |
4ddddc1f NTND |
275 | static void strbuf_addf_gently(struct strbuf *buf, const char *fmt, ...) |
276 | { | |
277 | va_list params; | |
278 | ||
279 | if (!buf) | |
280 | return; | |
281 | ||
282 | va_start(params, fmt); | |
283 | strbuf_vaddf(buf, fmt, params); | |
284 | va_end(params); | |
285 | } | |
286 | ||
ee6763af NTND |
287 | int validate_worktree(const struct worktree *wt, struct strbuf *errmsg, |
288 | unsigned flags) | |
4ddddc1f NTND |
289 | { |
290 | struct strbuf wt_path = STRBUF_INIT; | |
3d7747e3 | 291 | struct strbuf realpath = STRBUF_INIT; |
4ddddc1f NTND |
292 | char *path = NULL; |
293 | int err, ret = -1; | |
294 | ||
295 | strbuf_addf(&wt_path, "%s/.git", wt->path); | |
296 | ||
297 | if (is_main_worktree(wt)) { | |
298 | if (is_directory(wt_path.buf)) { | |
299 | ret = 0; | |
300 | goto done; | |
301 | } | |
302 | /* | |
303 | * Main worktree using .git file to point to the | |
304 | * repository would make it impossible to know where | |
305 | * the actual worktree is if this function is executed | |
306 | * from another worktree. No .git file support for now. | |
307 | */ | |
308 | strbuf_addf_gently(errmsg, | |
309 | _("'%s' at main working tree is not the repository directory"), | |
310 | wt_path.buf); | |
311 | goto done; | |
312 | } | |
313 | ||
314 | /* | |
315 | * Make sure "gitdir" file points to a real .git file and that | |
316 | * file points back here. | |
317 | */ | |
318 | if (!is_absolute_path(wt->path)) { | |
319 | strbuf_addf_gently(errmsg, | |
320 | _("'%s' file does not contain absolute path to the working tree location"), | |
321 | git_common_path("worktrees/%s/gitdir", wt->id)); | |
322 | goto done; | |
323 | } | |
324 | ||
ee6763af NTND |
325 | if (flags & WT_VALIDATE_WORKTREE_MISSING_OK && |
326 | !file_exists(wt->path)) { | |
327 | ret = 0; | |
328 | goto done; | |
329 | } | |
330 | ||
4ddddc1f NTND |
331 | if (!file_exists(wt_path.buf)) { |
332 | strbuf_addf_gently(errmsg, _("'%s' does not exist"), wt_path.buf); | |
333 | goto done; | |
334 | } | |
335 | ||
336 | path = xstrdup_or_null(read_gitfile_gently(wt_path.buf, &err)); | |
337 | if (!path) { | |
338 | strbuf_addf_gently(errmsg, _("'%s' is not a .git file, error code %d"), | |
339 | wt_path.buf, err); | |
340 | goto done; | |
341 | } | |
342 | ||
3d7747e3 AM |
343 | strbuf_realpath(&realpath, git_common_path("worktrees/%s", wt->id), 1); |
344 | ret = fspathcmp(path, realpath.buf); | |
4ddddc1f NTND |
345 | |
346 | if (ret) | |
347 | strbuf_addf_gently(errmsg, _("'%s' does not point back to '%s'"), | |
348 | wt->path, git_common_path("worktrees/%s", wt->id)); | |
349 | done: | |
350 | free(path); | |
351 | strbuf_release(&wt_path); | |
3d7747e3 | 352 | strbuf_release(&realpath); |
4ddddc1f NTND |
353 | return ret; |
354 | } | |
355 | ||
9c620fc7 NTND |
356 | void update_worktree_location(struct worktree *wt, const char *path_) |
357 | { | |
358 | struct strbuf path = STRBUF_INIT; | |
359 | ||
360 | if (is_main_worktree(wt)) | |
033abf97 | 361 | BUG("can't relocate main worktree"); |
9c620fc7 NTND |
362 | |
363 | strbuf_realpath(&path, path_, 1); | |
364 | if (fspathcmp(wt->path, path.buf)) { | |
365 | write_file(git_common_path("worktrees/%s/gitdir", wt->id), | |
366 | "%s/.git", path.buf); | |
367 | free(wt->path); | |
368 | wt->path = strbuf_detach(&path, NULL); | |
369 | } | |
370 | strbuf_release(&path); | |
371 | } | |
372 | ||
14ace5b7 NTND |
373 | int is_worktree_being_rebased(const struct worktree *wt, |
374 | const char *target) | |
8d9fdd70 NTND |
375 | { |
376 | struct wt_status_state state; | |
377 | int found_rebase; | |
378 | ||
379 | memset(&state, 0, sizeof(state)); | |
380 | found_rebase = wt_status_check_rebase(wt, &state) && | |
a46d1f73 MÅ |
381 | (state.rebase_in_progress || |
382 | state.rebase_interactive_in_progress) && | |
383 | state.branch && | |
384 | skip_prefix(target, "refs/heads/", &target) && | |
385 | !strcmp(state.branch, target); | |
962dd7eb | 386 | wt_status_state_free_buffers(&state); |
8d9fdd70 NTND |
387 | return found_rebase; |
388 | } | |
389 | ||
14ace5b7 NTND |
390 | int is_worktree_being_bisected(const struct worktree *wt, |
391 | const char *target) | |
51934904 | 392 | { |
04a3dfb8 | 393 | struct wt_status_state state; |
fb07bd42 | 394 | int found_bisect; |
04a3dfb8 NTND |
395 | |
396 | memset(&state, 0, sizeof(state)); | |
fb07bd42 MÅ |
397 | found_bisect = wt_status_check_bisect(wt, &state) && |
398 | state.branch && | |
a46d1f73 MÅ |
399 | skip_prefix(target, "refs/heads/", &target) && |
400 | !strcmp(state.branch, target); | |
962dd7eb | 401 | wt_status_state_free_buffers(&state); |
fb07bd42 | 402 | return found_bisect; |
04a3dfb8 NTND |
403 | } |
404 | ||
8d9fdd70 NTND |
405 | /* |
406 | * note: this function should be able to detect shared symref even if | |
407 | * HEAD is temporarily detached (e.g. in the middle of rebase or | |
408 | * bisect). New commands that do similar things should update this | |
409 | * function as well. | |
410 | */ | |
662078ca RJ |
411 | int is_shared_symref(const struct worktree *wt, const char *symref, |
412 | const char *target) | |
51934904 | 413 | { |
662078ca RJ |
414 | const char *symref_target; |
415 | struct ref_store *refs; | |
416 | int flags; | |
51934904 | 417 | |
662078ca RJ |
418 | if (wt->is_bare) |
419 | return 0; | |
fa099d23 | 420 | |
662078ca RJ |
421 | if (wt->is_detached && !strcmp(symref, "HEAD")) { |
422 | if (is_worktree_being_rebased(wt, target)) | |
423 | return 1; | |
424 | if (is_worktree_being_bisected(wt, target)) | |
425 | return 1; | |
426 | } | |
c8717148 | 427 | |
662078ca RJ |
428 | refs = get_worktree_ref_store(wt); |
429 | symref_target = refs_resolve_ref_unsafe(refs, symref, 0, | |
430 | NULL, &flags); | |
431 | if ((flags & REF_ISSYMREF) && | |
432 | symref_target && !strcmp(symref_target, target)) | |
433 | return 1; | |
8d9fdd70 | 434 | |
662078ca RJ |
435 | return 0; |
436 | } | |
437 | ||
438 | const struct worktree *find_shared_symref(struct worktree **worktrees, | |
439 | const char *symref, | |
440 | const char *target) | |
441 | { | |
442 | ||
faa4d598 | 443 | for (int i = 0; worktrees[i]; i++) |
662078ca RJ |
444 | if (is_shared_symref(worktrees[i], symref, target)) |
445 | return worktrees[i]; | |
51934904 | 446 | |
662078ca | 447 | return NULL; |
ac6c561b | 448 | } |
1a248cf2 SB |
449 | |
450 | int submodule_uses_worktrees(const char *path) | |
451 | { | |
452 | char *submodule_gitdir; | |
e02a7141 | 453 | struct strbuf sb = STRBUF_INIT, err = STRBUF_INIT; |
1a248cf2 SB |
454 | DIR *dir; |
455 | struct dirent *d; | |
7c4be458 | 456 | int ret = 0; |
e8805af1 | 457 | struct repository_format format = REPOSITORY_FORMAT_INIT; |
1a248cf2 SB |
458 | |
459 | submodule_gitdir = git_pathdup_submodule(path, "%s", ""); | |
460 | if (!submodule_gitdir) | |
461 | return 0; | |
462 | ||
463 | /* The env would be set for the superproject. */ | |
464 | get_common_dir_noenv(&sb, submodule_gitdir); | |
d32de66a | 465 | free(submodule_gitdir); |
1a248cf2 | 466 | |
1a248cf2 SB |
467 | strbuf_addstr(&sb, "/config"); |
468 | read_repository_format(&format, sb.buf); | |
e02a7141 | 469 | if (verify_repository_format(&format, &err)) { |
470 | strbuf_release(&err); | |
1a248cf2 | 471 | strbuf_release(&sb); |
e8805af1 | 472 | clear_repository_format(&format); |
1a248cf2 SB |
473 | return 1; |
474 | } | |
e8805af1 | 475 | clear_repository_format(&format); |
e02a7141 | 476 | strbuf_release(&err); |
1a248cf2 SB |
477 | |
478 | /* Replace config by worktrees. */ | |
479 | strbuf_setlen(&sb, sb.len - strlen("config")); | |
480 | strbuf_addstr(&sb, "worktrees"); | |
481 | ||
482 | /* See if there is any file inside the worktrees directory. */ | |
483 | dir = opendir(sb.buf); | |
484 | strbuf_release(&sb); | |
1a248cf2 SB |
485 | |
486 | if (!dir) | |
487 | return 0; | |
488 | ||
b548f0f1 | 489 | d = readdir_skip_dot_and_dotdot(dir); |
afe8a907 | 490 | if (d) |
1a248cf2 | 491 | ret = 1; |
1a248cf2 SB |
492 | closedir(dir); |
493 | return ret; | |
494 | } | |
d0c39a49 | 495 | |
ab3e1f78 NTND |
496 | void strbuf_worktree_ref(const struct worktree *wt, |
497 | struct strbuf *sb, | |
498 | const char *refname) | |
499 | { | |
71e54734 HWN |
500 | if (parse_worktree_ref(refname, NULL, NULL, NULL) == |
501 | REF_WORKTREE_CURRENT && | |
502 | wt && !wt->is_current) { | |
503 | if (is_main_worktree(wt)) | |
504 | strbuf_addstr(sb, "main-worktree/"); | |
505 | else | |
506 | strbuf_addf(sb, "worktrees/%s/", wt->id); | |
ab3e1f78 NTND |
507 | } |
508 | strbuf_addstr(sb, refname); | |
509 | } | |
510 | ||
d0c39a49 NTND |
511 | int other_head_refs(each_ref_fn fn, void *cb_data) |
512 | { | |
513 | struct worktree **worktrees, **p; | |
ef2d5547 | 514 | struct strbuf refname = STRBUF_INIT; |
d0c39a49 NTND |
515 | int ret = 0; |
516 | ||
03f2465b | 517 | worktrees = get_worktrees(); |
d0c39a49 NTND |
518 | for (p = worktrees; *p; p++) { |
519 | struct worktree *wt = *p; | |
ab3e1f78 NTND |
520 | struct object_id oid; |
521 | int flag; | |
d0c39a49 NTND |
522 | |
523 | if (wt->is_current) | |
524 | continue; | |
525 | ||
ef2d5547 MÅ |
526 | strbuf_reset(&refname); |
527 | strbuf_worktree_ref(wt, &refname, "HEAD"); | |
f1da24ca | 528 | if (refs_resolve_ref_unsafe(get_main_ref_store(the_repository), |
76887df0 ÆAB |
529 | refname.buf, |
530 | RESOLVE_REF_READING, | |
ce14de03 | 531 | &oid, &flag)) |
ef2d5547 | 532 | ret = fn(refname.buf, &oid, flag, cb_data); |
d0c39a49 NTND |
533 | if (ret) |
534 | break; | |
535 | } | |
536 | free_worktrees(worktrees); | |
ef2d5547 | 537 | strbuf_release(&refname); |
d0c39a49 NTND |
538 | return ret; |
539 | } | |
bdd1f3e4 ES |
540 | |
541 | /* | |
542 | * Repair worktree's /path/to/worktree/.git file if missing, corrupt, or not | |
543 | * pointing at <repo>/worktrees/<id>. | |
544 | */ | |
545 | static void repair_gitfile(struct worktree *wt, | |
546 | worktree_repair_fn fn, void *cb_data) | |
547 | { | |
548 | struct strbuf dotgit = STRBUF_INIT; | |
549 | struct strbuf repo = STRBUF_INIT; | |
550 | char *backlink; | |
551 | const char *repair = NULL; | |
552 | int err; | |
553 | ||
554 | /* missing worktree can't be repaired */ | |
555 | if (!file_exists(wt->path)) | |
556 | return; | |
557 | ||
558 | if (!is_directory(wt->path)) { | |
559 | fn(1, wt->path, _("not a directory"), cb_data); | |
560 | return; | |
561 | } | |
562 | ||
563 | strbuf_realpath(&repo, git_common_path("worktrees/%s", wt->id), 1); | |
564 | strbuf_addf(&dotgit, "%s/.git", wt->path); | |
565 | backlink = xstrdup_or_null(read_gitfile_gently(dotgit.buf, &err)); | |
566 | ||
567 | if (err == READ_GITFILE_ERR_NOT_A_FILE) | |
568 | fn(1, wt->path, _(".git is not a file"), cb_data); | |
569 | else if (err) | |
570 | repair = _(".git file broken"); | |
571 | else if (fspathcmp(backlink, repo.buf)) | |
572 | repair = _(".git file incorrect"); | |
573 | ||
574 | if (repair) { | |
575 | fn(0, wt->path, repair, cb_data); | |
576 | write_file(dotgit.buf, "gitdir: %s", repo.buf); | |
577 | } | |
578 | ||
579 | free(backlink); | |
580 | strbuf_release(&repo); | |
581 | strbuf_release(&dotgit); | |
582 | } | |
583 | ||
2b0e46f5 JK |
584 | static void repair_noop(int iserr UNUSED, |
585 | const char *path UNUSED, | |
586 | const char *msg UNUSED, | |
587 | void *cb_data UNUSED) | |
bdd1f3e4 ES |
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 | } |