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1 | ||
2 | #include "cache.h" | |
3 | #include "repository.h" | |
4 | #include "config.h" | |
5 | #include "submodule-config.h" | |
6 | #include "submodule.h" | |
7 | #include "dir.h" | |
8 | #include "diff.h" | |
9 | #include "commit.h" | |
10 | #include "revision.h" | |
11 | #include "run-command.h" | |
12 | #include "diffcore.h" | |
13 | #include "refs.h" | |
14 | #include "string-list.h" | |
15 | #include "oid-array.h" | |
16 | #include "strvec.h" | |
17 | #include "blob.h" | |
18 | #include "thread-utils.h" | |
19 | #include "quote.h" | |
20 | #include "remote.h" | |
21 | #include "worktree.h" | |
22 | #include "parse-options.h" | |
23 | #include "object-store.h" | |
24 | #include "commit-reach.h" | |
25 | ||
26 | static int config_update_recurse_submodules = RECURSE_SUBMODULES_OFF; | |
27 | static int initialized_fetch_ref_tips; | |
28 | static struct oid_array ref_tips_before_fetch; | |
29 | static struct oid_array ref_tips_after_fetch; | |
30 | ||
31 | /* | |
32 | * Check if the .gitmodules file is unmerged. Parsing of the .gitmodules file | |
33 | * will be disabled because we can't guess what might be configured in | |
34 | * .gitmodules unless the user resolves the conflict. | |
35 | */ | |
36 | int is_gitmodules_unmerged(const struct index_state *istate) | |
37 | { | |
38 | int pos = index_name_pos(istate, GITMODULES_FILE, strlen(GITMODULES_FILE)); | |
39 | if (pos < 0) { /* .gitmodules not found or isn't merged */ | |
40 | pos = -1 - pos; | |
41 | if (istate->cache_nr > pos) { /* there is a .gitmodules */ | |
42 | const struct cache_entry *ce = istate->cache[pos]; | |
43 | if (ce_namelen(ce) == strlen(GITMODULES_FILE) && | |
44 | !strcmp(ce->name, GITMODULES_FILE)) | |
45 | return 1; | |
46 | } | |
47 | } | |
48 | ||
49 | return 0; | |
50 | } | |
51 | ||
52 | /* | |
53 | * Check if the .gitmodules file is safe to write. | |
54 | * | |
55 | * Writing to the .gitmodules file requires that the file exists in the | |
56 | * working tree or, if it doesn't, that a brand new .gitmodules file is going | |
57 | * to be created (i.e. it's neither in the index nor in the current branch). | |
58 | * | |
59 | * It is not safe to write to .gitmodules if it's not in the working tree but | |
60 | * it is in the index or in the current branch, because writing new values | |
61 | * (and staging them) would blindly overwrite ALL the old content. | |
62 | */ | |
63 | int is_writing_gitmodules_ok(void) | |
64 | { | |
65 | struct object_id oid; | |
66 | return file_exists(GITMODULES_FILE) || | |
67 | (get_oid(GITMODULES_INDEX, &oid) < 0 && get_oid(GITMODULES_HEAD, &oid) < 0); | |
68 | } | |
69 | ||
70 | /* | |
71 | * Check if the .gitmodules file has unstaged modifications. This must be | |
72 | * checked before allowing modifications to the .gitmodules file with the | |
73 | * intention to stage them later, because when continuing we would stage the | |
74 | * modifications the user didn't stage herself too. That might change in a | |
75 | * future version when we learn to stage the changes we do ourselves without | |
76 | * staging any previous modifications. | |
77 | */ | |
78 | int is_staging_gitmodules_ok(struct index_state *istate) | |
79 | { | |
80 | int pos = index_name_pos(istate, GITMODULES_FILE, strlen(GITMODULES_FILE)); | |
81 | ||
82 | if ((pos >= 0) && (pos < istate->cache_nr)) { | |
83 | struct stat st; | |
84 | if (lstat(GITMODULES_FILE, &st) == 0 && | |
85 | ie_modified(istate, istate->cache[pos], &st, 0) & DATA_CHANGED) | |
86 | return 0; | |
87 | } | |
88 | ||
89 | return 1; | |
90 | } | |
91 | ||
92 | static int for_each_remote_ref_submodule(const char *submodule, | |
93 | each_ref_fn fn, void *cb_data) | |
94 | { | |
95 | return refs_for_each_remote_ref(get_submodule_ref_store(submodule), | |
96 | fn, cb_data); | |
97 | } | |
98 | ||
99 | /* | |
100 | * Try to update the "path" entry in the "submodule.<name>" section of the | |
101 | * .gitmodules file. Return 0 only if a .gitmodules file was found, a section | |
102 | * with the correct path=<oldpath> setting was found and we could update it. | |
103 | */ | |
104 | int update_path_in_gitmodules(const char *oldpath, const char *newpath) | |
105 | { | |
106 | struct strbuf entry = STRBUF_INIT; | |
107 | const struct submodule *submodule; | |
108 | int ret; | |
109 | ||
110 | if (!file_exists(GITMODULES_FILE)) /* Do nothing without .gitmodules */ | |
111 | return -1; | |
112 | ||
113 | if (is_gitmodules_unmerged(the_repository->index)) | |
114 | die(_("Cannot change unmerged .gitmodules, resolve merge conflicts first")); | |
115 | ||
116 | submodule = submodule_from_path(the_repository, &null_oid, oldpath); | |
117 | if (!submodule || !submodule->name) { | |
118 | warning(_("Could not find section in .gitmodules where path=%s"), oldpath); | |
119 | return -1; | |
120 | } | |
121 | strbuf_addstr(&entry, "submodule."); | |
122 | strbuf_addstr(&entry, submodule->name); | |
123 | strbuf_addstr(&entry, ".path"); | |
124 | ret = config_set_in_gitmodules_file_gently(entry.buf, newpath); | |
125 | strbuf_release(&entry); | |
126 | return ret; | |
127 | } | |
128 | ||
129 | /* | |
130 | * Try to remove the "submodule.<name>" section from .gitmodules where the given | |
131 | * path is configured. Return 0 only if a .gitmodules file was found, a section | |
132 | * with the correct path=<path> setting was found and we could remove it. | |
133 | */ | |
134 | int remove_path_from_gitmodules(const char *path) | |
135 | { | |
136 | struct strbuf sect = STRBUF_INIT; | |
137 | const struct submodule *submodule; | |
138 | ||
139 | if (!file_exists(GITMODULES_FILE)) /* Do nothing without .gitmodules */ | |
140 | return -1; | |
141 | ||
142 | if (is_gitmodules_unmerged(the_repository->index)) | |
143 | die(_("Cannot change unmerged .gitmodules, resolve merge conflicts first")); | |
144 | ||
145 | submodule = submodule_from_path(the_repository, &null_oid, path); | |
146 | if (!submodule || !submodule->name) { | |
147 | warning(_("Could not find section in .gitmodules where path=%s"), path); | |
148 | return -1; | |
149 | } | |
150 | strbuf_addstr(§, "submodule."); | |
151 | strbuf_addstr(§, submodule->name); | |
152 | if (git_config_rename_section_in_file(GITMODULES_FILE, sect.buf, NULL) < 0) { | |
153 | /* Maybe the user already did that, don't error out here */ | |
154 | warning(_("Could not remove .gitmodules entry for %s"), path); | |
155 | strbuf_release(§); | |
156 | return -1; | |
157 | } | |
158 | strbuf_release(§); | |
159 | return 0; | |
160 | } | |
161 | ||
162 | void stage_updated_gitmodules(struct index_state *istate) | |
163 | { | |
164 | if (add_file_to_index(istate, GITMODULES_FILE, 0)) | |
165 | die(_("staging updated .gitmodules failed")); | |
166 | } | |
167 | ||
168 | /* TODO: remove this function, use repo_submodule_init instead. */ | |
169 | int add_submodule_odb(const char *path) | |
170 | { | |
171 | struct strbuf objects_directory = STRBUF_INIT; | |
172 | int ret = 0; | |
173 | ||
174 | ret = strbuf_git_path_submodule(&objects_directory, path, "objects/"); | |
175 | if (ret) | |
176 | goto done; | |
177 | if (!is_directory(objects_directory.buf)) { | |
178 | ret = -1; | |
179 | goto done; | |
180 | } | |
181 | add_to_alternates_memory(objects_directory.buf); | |
182 | done: | |
183 | strbuf_release(&objects_directory); | |
184 | return ret; | |
185 | } | |
186 | ||
187 | void set_diffopt_flags_from_submodule_config(struct diff_options *diffopt, | |
188 | const char *path) | |
189 | { | |
190 | const struct submodule *submodule = submodule_from_path(the_repository, | |
191 | &null_oid, path); | |
192 | if (submodule) { | |
193 | const char *ignore; | |
194 | char *key; | |
195 | ||
196 | key = xstrfmt("submodule.%s.ignore", submodule->name); | |
197 | if (repo_config_get_string_tmp(the_repository, key, &ignore)) | |
198 | ignore = submodule->ignore; | |
199 | free(key); | |
200 | ||
201 | if (ignore) | |
202 | handle_ignore_submodules_arg(diffopt, ignore); | |
203 | else if (is_gitmodules_unmerged(the_repository->index)) | |
204 | diffopt->flags.ignore_submodules = 1; | |
205 | } | |
206 | } | |
207 | ||
208 | /* Cheap function that only determines if we're interested in submodules at all */ | |
209 | int git_default_submodule_config(const char *var, const char *value, void *cb) | |
210 | { | |
211 | if (!strcmp(var, "submodule.recurse")) { | |
212 | int v = git_config_bool(var, value) ? | |
213 | RECURSE_SUBMODULES_ON : RECURSE_SUBMODULES_OFF; | |
214 | config_update_recurse_submodules = v; | |
215 | } | |
216 | return 0; | |
217 | } | |
218 | ||
219 | int option_parse_recurse_submodules_worktree_updater(const struct option *opt, | |
220 | const char *arg, int unset) | |
221 | { | |
222 | if (unset) { | |
223 | config_update_recurse_submodules = RECURSE_SUBMODULES_OFF; | |
224 | return 0; | |
225 | } | |
226 | if (arg) | |
227 | config_update_recurse_submodules = | |
228 | parse_update_recurse_submodules_arg(opt->long_name, | |
229 | arg); | |
230 | else | |
231 | config_update_recurse_submodules = RECURSE_SUBMODULES_ON; | |
232 | ||
233 | return 0; | |
234 | } | |
235 | ||
236 | /* | |
237 | * Determine if a submodule has been initialized at a given 'path' | |
238 | */ | |
239 | int is_submodule_active(struct repository *repo, const char *path) | |
240 | { | |
241 | int ret = 0; | |
242 | char *key = NULL; | |
243 | char *value = NULL; | |
244 | const struct string_list *sl; | |
245 | const struct submodule *module; | |
246 | ||
247 | module = submodule_from_path(repo, &null_oid, path); | |
248 | ||
249 | /* early return if there isn't a path->module mapping */ | |
250 | if (!module) | |
251 | return 0; | |
252 | ||
253 | /* submodule.<name>.active is set */ | |
254 | key = xstrfmt("submodule.%s.active", module->name); | |
255 | if (!repo_config_get_bool(repo, key, &ret)) { | |
256 | free(key); | |
257 | return ret; | |
258 | } | |
259 | free(key); | |
260 | ||
261 | /* submodule.active is set */ | |
262 | sl = repo_config_get_value_multi(repo, "submodule.active"); | |
263 | if (sl) { | |
264 | struct pathspec ps; | |
265 | struct strvec args = STRVEC_INIT; | |
266 | const struct string_list_item *item; | |
267 | ||
268 | for_each_string_list_item(item, sl) { | |
269 | strvec_push(&args, item->string); | |
270 | } | |
271 | ||
272 | parse_pathspec(&ps, 0, 0, NULL, args.v); | |
273 | ret = match_pathspec(repo->index, &ps, path, strlen(path), 0, NULL, 1); | |
274 | ||
275 | strvec_clear(&args); | |
276 | clear_pathspec(&ps); | |
277 | return ret; | |
278 | } | |
279 | ||
280 | /* fallback to checking if the URL is set */ | |
281 | key = xstrfmt("submodule.%s.url", module->name); | |
282 | ret = !repo_config_get_string(repo, key, &value); | |
283 | ||
284 | free(value); | |
285 | free(key); | |
286 | return ret; | |
287 | } | |
288 | ||
289 | int is_submodule_populated_gently(const char *path, int *return_error_code) | |
290 | { | |
291 | int ret = 0; | |
292 | char *gitdir = xstrfmt("%s/.git", path); | |
293 | ||
294 | if (resolve_gitdir_gently(gitdir, return_error_code)) | |
295 | ret = 1; | |
296 | ||
297 | free(gitdir); | |
298 | return ret; | |
299 | } | |
300 | ||
301 | /* | |
302 | * Dies if the provided 'prefix' corresponds to an unpopulated submodule | |
303 | */ | |
304 | void die_in_unpopulated_submodule(const struct index_state *istate, | |
305 | const char *prefix) | |
306 | { | |
307 | int i, prefixlen; | |
308 | ||
309 | if (!prefix) | |
310 | return; | |
311 | ||
312 | prefixlen = strlen(prefix); | |
313 | ||
314 | for (i = 0; i < istate->cache_nr; i++) { | |
315 | struct cache_entry *ce = istate->cache[i]; | |
316 | int ce_len = ce_namelen(ce); | |
317 | ||
318 | if (!S_ISGITLINK(ce->ce_mode)) | |
319 | continue; | |
320 | if (prefixlen <= ce_len) | |
321 | continue; | |
322 | if (strncmp(ce->name, prefix, ce_len)) | |
323 | continue; | |
324 | if (prefix[ce_len] != '/') | |
325 | continue; | |
326 | ||
327 | die(_("in unpopulated submodule '%s'"), ce->name); | |
328 | } | |
329 | } | |
330 | ||
331 | /* | |
332 | * Dies if any paths in the provided pathspec descends into a submodule | |
333 | */ | |
334 | void die_path_inside_submodule(const struct index_state *istate, | |
335 | const struct pathspec *ps) | |
336 | { | |
337 | int i, j; | |
338 | ||
339 | for (i = 0; i < istate->cache_nr; i++) { | |
340 | struct cache_entry *ce = istate->cache[i]; | |
341 | int ce_len = ce_namelen(ce); | |
342 | ||
343 | if (!S_ISGITLINK(ce->ce_mode)) | |
344 | continue; | |
345 | ||
346 | for (j = 0; j < ps->nr ; j++) { | |
347 | const struct pathspec_item *item = &ps->items[j]; | |
348 | ||
349 | if (item->len <= ce_len) | |
350 | continue; | |
351 | if (item->match[ce_len] != '/') | |
352 | continue; | |
353 | if (strncmp(ce->name, item->match, ce_len)) | |
354 | continue; | |
355 | if (item->len == ce_len + 1) | |
356 | continue; | |
357 | ||
358 | die(_("Pathspec '%s' is in submodule '%.*s'"), | |
359 | item->original, ce_len, ce->name); | |
360 | } | |
361 | } | |
362 | } | |
363 | ||
364 | enum submodule_update_type parse_submodule_update_type(const char *value) | |
365 | { | |
366 | if (!strcmp(value, "none")) | |
367 | return SM_UPDATE_NONE; | |
368 | else if (!strcmp(value, "checkout")) | |
369 | return SM_UPDATE_CHECKOUT; | |
370 | else if (!strcmp(value, "rebase")) | |
371 | return SM_UPDATE_REBASE; | |
372 | else if (!strcmp(value, "merge")) | |
373 | return SM_UPDATE_MERGE; | |
374 | else if (*value == '!') | |
375 | return SM_UPDATE_COMMAND; | |
376 | else | |
377 | return SM_UPDATE_UNSPECIFIED; | |
378 | } | |
379 | ||
380 | int parse_submodule_update_strategy(const char *value, | |
381 | struct submodule_update_strategy *dst) | |
382 | { | |
383 | enum submodule_update_type type; | |
384 | ||
385 | free((void*)dst->command); | |
386 | dst->command = NULL; | |
387 | ||
388 | type = parse_submodule_update_type(value); | |
389 | if (type == SM_UPDATE_UNSPECIFIED) | |
390 | return -1; | |
391 | ||
392 | dst->type = type; | |
393 | if (type == SM_UPDATE_COMMAND) | |
394 | dst->command = xstrdup(value + 1); | |
395 | ||
396 | return 0; | |
397 | } | |
398 | ||
399 | const char *submodule_strategy_to_string(const struct submodule_update_strategy *s) | |
400 | { | |
401 | struct strbuf sb = STRBUF_INIT; | |
402 | switch (s->type) { | |
403 | case SM_UPDATE_CHECKOUT: | |
404 | return "checkout"; | |
405 | case SM_UPDATE_MERGE: | |
406 | return "merge"; | |
407 | case SM_UPDATE_REBASE: | |
408 | return "rebase"; | |
409 | case SM_UPDATE_NONE: | |
410 | return "none"; | |
411 | case SM_UPDATE_UNSPECIFIED: | |
412 | return NULL; | |
413 | case SM_UPDATE_COMMAND: | |
414 | strbuf_addf(&sb, "!%s", s->command); | |
415 | return strbuf_detach(&sb, NULL); | |
416 | } | |
417 | return NULL; | |
418 | } | |
419 | ||
420 | void handle_ignore_submodules_arg(struct diff_options *diffopt, | |
421 | const char *arg) | |
422 | { | |
423 | diffopt->flags.ignore_submodules = 0; | |
424 | diffopt->flags.ignore_untracked_in_submodules = 0; | |
425 | diffopt->flags.ignore_dirty_submodules = 0; | |
426 | ||
427 | if (!strcmp(arg, "all")) | |
428 | diffopt->flags.ignore_submodules = 1; | |
429 | else if (!strcmp(arg, "untracked")) | |
430 | diffopt->flags.ignore_untracked_in_submodules = 1; | |
431 | else if (!strcmp(arg, "dirty")) | |
432 | diffopt->flags.ignore_dirty_submodules = 1; | |
433 | else if (strcmp(arg, "none")) | |
434 | die(_("bad --ignore-submodules argument: %s"), arg); | |
435 | /* | |
436 | * Please update _git_status() in git-completion.bash when you | |
437 | * add new options | |
438 | */ | |
439 | } | |
440 | ||
441 | static int prepare_submodule_diff_summary(struct repository *r, struct rev_info *rev, | |
442 | const char *path, | |
443 | struct commit *left, struct commit *right, | |
444 | struct commit_list *merge_bases) | |
445 | { | |
446 | struct commit_list *list; | |
447 | ||
448 | repo_init_revisions(r, rev, NULL); | |
449 | setup_revisions(0, NULL, rev, NULL); | |
450 | rev->left_right = 1; | |
451 | rev->first_parent_only = 1; | |
452 | left->object.flags |= SYMMETRIC_LEFT; | |
453 | add_pending_object(rev, &left->object, path); | |
454 | add_pending_object(rev, &right->object, path); | |
455 | for (list = merge_bases; list; list = list->next) { | |
456 | list->item->object.flags |= UNINTERESTING; | |
457 | add_pending_object(rev, &list->item->object, | |
458 | oid_to_hex(&list->item->object.oid)); | |
459 | } | |
460 | return prepare_revision_walk(rev); | |
461 | } | |
462 | ||
463 | static void print_submodule_diff_summary(struct repository *r, struct rev_info *rev, struct diff_options *o) | |
464 | { | |
465 | static const char format[] = " %m %s"; | |
466 | struct strbuf sb = STRBUF_INIT; | |
467 | struct commit *commit; | |
468 | ||
469 | while ((commit = get_revision(rev))) { | |
470 | struct pretty_print_context ctx = {0}; | |
471 | ctx.date_mode = rev->date_mode; | |
472 | ctx.output_encoding = get_log_output_encoding(); | |
473 | strbuf_setlen(&sb, 0); | |
474 | repo_format_commit_message(r, commit, format, &sb, | |
475 | &ctx); | |
476 | strbuf_addch(&sb, '\n'); | |
477 | if (commit->object.flags & SYMMETRIC_LEFT) | |
478 | diff_emit_submodule_del(o, sb.buf); | |
479 | else | |
480 | diff_emit_submodule_add(o, sb.buf); | |
481 | } | |
482 | strbuf_release(&sb); | |
483 | } | |
484 | ||
485 | static void prepare_submodule_repo_env_no_git_dir(struct strvec *out) | |
486 | { | |
487 | const char * const *var; | |
488 | ||
489 | for (var = local_repo_env; *var; var++) { | |
490 | if (strcmp(*var, CONFIG_DATA_ENVIRONMENT)) | |
491 | strvec_push(out, *var); | |
492 | } | |
493 | } | |
494 | ||
495 | void prepare_submodule_repo_env(struct strvec *out) | |
496 | { | |
497 | prepare_submodule_repo_env_no_git_dir(out); | |
498 | strvec_pushf(out, "%s=%s", GIT_DIR_ENVIRONMENT, | |
499 | DEFAULT_GIT_DIR_ENVIRONMENT); | |
500 | } | |
501 | ||
502 | static void prepare_submodule_repo_env_in_gitdir(struct strvec *out) | |
503 | { | |
504 | prepare_submodule_repo_env_no_git_dir(out); | |
505 | strvec_pushf(out, "%s=.", GIT_DIR_ENVIRONMENT); | |
506 | } | |
507 | ||
508 | /* | |
509 | * Initialize a repository struct for a submodule based on the provided 'path'. | |
510 | * | |
511 | * Unlike repo_submodule_init, this tolerates submodules not present | |
512 | * in .gitmodules. This function exists only to preserve historical behavior, | |
513 | * | |
514 | * Returns the repository struct on success, | |
515 | * NULL when the submodule is not present. | |
516 | */ | |
517 | static struct repository *open_submodule(const char *path) | |
518 | { | |
519 | struct strbuf sb = STRBUF_INIT; | |
520 | struct repository *out = xmalloc(sizeof(*out)); | |
521 | ||
522 | if (submodule_to_gitdir(&sb, path) || repo_init(out, sb.buf, NULL)) { | |
523 | strbuf_release(&sb); | |
524 | free(out); | |
525 | return NULL; | |
526 | } | |
527 | ||
528 | /* Mark it as a submodule */ | |
529 | out->submodule_prefix = xstrdup(path); | |
530 | ||
531 | strbuf_release(&sb); | |
532 | return out; | |
533 | } | |
534 | ||
535 | /* | |
536 | * Helper function to display the submodule header line prior to the full | |
537 | * summary output. | |
538 | * | |
539 | * If it can locate the submodule git directory it will create a repository | |
540 | * handle for the submodule and lookup both the left and right commits and | |
541 | * put them into the left and right pointers. | |
542 | */ | |
543 | static void show_submodule_header(struct diff_options *o, | |
544 | const char *path, | |
545 | struct object_id *one, struct object_id *two, | |
546 | unsigned dirty_submodule, | |
547 | struct repository *sub, | |
548 | struct commit **left, struct commit **right, | |
549 | struct commit_list **merge_bases) | |
550 | { | |
551 | const char *message = NULL; | |
552 | struct strbuf sb = STRBUF_INIT; | |
553 | int fast_forward = 0, fast_backward = 0; | |
554 | ||
555 | if (dirty_submodule & DIRTY_SUBMODULE_UNTRACKED) | |
556 | diff_emit_submodule_untracked(o, path); | |
557 | ||
558 | if (dirty_submodule & DIRTY_SUBMODULE_MODIFIED) | |
559 | diff_emit_submodule_modified(o, path); | |
560 | ||
561 | if (is_null_oid(one)) | |
562 | message = "(new submodule)"; | |
563 | else if (is_null_oid(two)) | |
564 | message = "(submodule deleted)"; | |
565 | ||
566 | if (!sub) { | |
567 | if (!message) | |
568 | message = "(commits not present)"; | |
569 | goto output_header; | |
570 | } | |
571 | ||
572 | /* | |
573 | * Attempt to lookup the commit references, and determine if this is | |
574 | * a fast forward or fast backwards update. | |
575 | */ | |
576 | *left = lookup_commit_reference(sub, one); | |
577 | *right = lookup_commit_reference(sub, two); | |
578 | ||
579 | /* | |
580 | * Warn about missing commits in the submodule project, but only if | |
581 | * they aren't null. | |
582 | */ | |
583 | if ((!is_null_oid(one) && !*left) || | |
584 | (!is_null_oid(two) && !*right)) | |
585 | message = "(commits not present)"; | |
586 | ||
587 | *merge_bases = repo_get_merge_bases(sub, *left, *right); | |
588 | if (*merge_bases) { | |
589 | if ((*merge_bases)->item == *left) | |
590 | fast_forward = 1; | |
591 | else if ((*merge_bases)->item == *right) | |
592 | fast_backward = 1; | |
593 | } | |
594 | ||
595 | if (oideq(one, two)) { | |
596 | strbuf_release(&sb); | |
597 | return; | |
598 | } | |
599 | ||
600 | output_header: | |
601 | strbuf_addf(&sb, "Submodule %s ", path); | |
602 | strbuf_add_unique_abbrev(&sb, one, DEFAULT_ABBREV); | |
603 | strbuf_addstr(&sb, (fast_backward || fast_forward) ? ".." : "..."); | |
604 | strbuf_add_unique_abbrev(&sb, two, DEFAULT_ABBREV); | |
605 | if (message) | |
606 | strbuf_addf(&sb, " %s\n", message); | |
607 | else | |
608 | strbuf_addf(&sb, "%s:\n", fast_backward ? " (rewind)" : ""); | |
609 | diff_emit_submodule_header(o, sb.buf); | |
610 | ||
611 | strbuf_release(&sb); | |
612 | } | |
613 | ||
614 | void show_submodule_diff_summary(struct diff_options *o, const char *path, | |
615 | struct object_id *one, struct object_id *two, | |
616 | unsigned dirty_submodule) | |
617 | { | |
618 | struct rev_info rev; | |
619 | struct commit *left = NULL, *right = NULL; | |
620 | struct commit_list *merge_bases = NULL; | |
621 | struct repository *sub; | |
622 | ||
623 | sub = open_submodule(path); | |
624 | show_submodule_header(o, path, one, two, dirty_submodule, | |
625 | sub, &left, &right, &merge_bases); | |
626 | ||
627 | /* | |
628 | * If we don't have both a left and a right pointer, there is no | |
629 | * reason to try and display a summary. The header line should contain | |
630 | * all the information the user needs. | |
631 | */ | |
632 | if (!left || !right || !sub) | |
633 | goto out; | |
634 | ||
635 | /* Treat revision walker failure the same as missing commits */ | |
636 | if (prepare_submodule_diff_summary(sub, &rev, path, left, right, merge_bases)) { | |
637 | diff_emit_submodule_error(o, "(revision walker failed)\n"); | |
638 | goto out; | |
639 | } | |
640 | ||
641 | print_submodule_diff_summary(sub, &rev, o); | |
642 | ||
643 | out: | |
644 | if (merge_bases) | |
645 | free_commit_list(merge_bases); | |
646 | clear_commit_marks(left, ~0); | |
647 | clear_commit_marks(right, ~0); | |
648 | if (sub) { | |
649 | repo_clear(sub); | |
650 | free(sub); | |
651 | } | |
652 | } | |
653 | ||
654 | void show_submodule_inline_diff(struct diff_options *o, const char *path, | |
655 | struct object_id *one, struct object_id *two, | |
656 | unsigned dirty_submodule) | |
657 | { | |
658 | const struct object_id *old_oid = the_hash_algo->empty_tree, *new_oid = the_hash_algo->empty_tree; | |
659 | struct commit *left = NULL, *right = NULL; | |
660 | struct commit_list *merge_bases = NULL; | |
661 | struct child_process cp = CHILD_PROCESS_INIT; | |
662 | struct strbuf sb = STRBUF_INIT; | |
663 | struct repository *sub; | |
664 | ||
665 | sub = open_submodule(path); | |
666 | show_submodule_header(o, path, one, two, dirty_submodule, | |
667 | sub, &left, &right, &merge_bases); | |
668 | ||
669 | /* We need a valid left and right commit to display a difference */ | |
670 | if (!(left || is_null_oid(one)) || | |
671 | !(right || is_null_oid(two))) | |
672 | goto done; | |
673 | ||
674 | if (left) | |
675 | old_oid = one; | |
676 | if (right) | |
677 | new_oid = two; | |
678 | ||
679 | cp.git_cmd = 1; | |
680 | cp.dir = path; | |
681 | cp.out = -1; | |
682 | cp.no_stdin = 1; | |
683 | ||
684 | /* TODO: other options may need to be passed here. */ | |
685 | strvec_pushl(&cp.args, "diff", "--submodule=diff", NULL); | |
686 | strvec_pushf(&cp.args, "--color=%s", want_color(o->use_color) ? | |
687 | "always" : "never"); | |
688 | ||
689 | if (o->flags.reverse_diff) { | |
690 | strvec_pushf(&cp.args, "--src-prefix=%s%s/", | |
691 | o->b_prefix, path); | |
692 | strvec_pushf(&cp.args, "--dst-prefix=%s%s/", | |
693 | o->a_prefix, path); | |
694 | } else { | |
695 | strvec_pushf(&cp.args, "--src-prefix=%s%s/", | |
696 | o->a_prefix, path); | |
697 | strvec_pushf(&cp.args, "--dst-prefix=%s%s/", | |
698 | o->b_prefix, path); | |
699 | } | |
700 | strvec_push(&cp.args, oid_to_hex(old_oid)); | |
701 | /* | |
702 | * If the submodule has modified content, we will diff against the | |
703 | * work tree, under the assumption that the user has asked for the | |
704 | * diff format and wishes to actually see all differences even if they | |
705 | * haven't yet been committed to the submodule yet. | |
706 | */ | |
707 | if (!(dirty_submodule & DIRTY_SUBMODULE_MODIFIED)) | |
708 | strvec_push(&cp.args, oid_to_hex(new_oid)); | |
709 | ||
710 | prepare_submodule_repo_env(&cp.env_array); | |
711 | if (start_command(&cp)) | |
712 | diff_emit_submodule_error(o, "(diff failed)\n"); | |
713 | ||
714 | while (strbuf_getwholeline_fd(&sb, cp.out, '\n') != EOF) | |
715 | diff_emit_submodule_pipethrough(o, sb.buf, sb.len); | |
716 | ||
717 | if (finish_command(&cp)) | |
718 | diff_emit_submodule_error(o, "(diff failed)\n"); | |
719 | ||
720 | done: | |
721 | strbuf_release(&sb); | |
722 | if (merge_bases) | |
723 | free_commit_list(merge_bases); | |
724 | if (left) | |
725 | clear_commit_marks(left, ~0); | |
726 | if (right) | |
727 | clear_commit_marks(right, ~0); | |
728 | if (sub) { | |
729 | repo_clear(sub); | |
730 | free(sub); | |
731 | } | |
732 | } | |
733 | ||
734 | int should_update_submodules(void) | |
735 | { | |
736 | return config_update_recurse_submodules == RECURSE_SUBMODULES_ON; | |
737 | } | |
738 | ||
739 | const struct submodule *submodule_from_ce(const struct cache_entry *ce) | |
740 | { | |
741 | if (!S_ISGITLINK(ce->ce_mode)) | |
742 | return NULL; | |
743 | ||
744 | if (!should_update_submodules()) | |
745 | return NULL; | |
746 | ||
747 | return submodule_from_path(the_repository, &null_oid, ce->name); | |
748 | } | |
749 | ||
750 | static struct oid_array *submodule_commits(struct string_list *submodules, | |
751 | const char *name) | |
752 | { | |
753 | struct string_list_item *item; | |
754 | ||
755 | item = string_list_insert(submodules, name); | |
756 | if (item->util) | |
757 | return (struct oid_array *) item->util; | |
758 | ||
759 | /* NEEDSWORK: should we have oid_array_init()? */ | |
760 | item->util = xcalloc(1, sizeof(struct oid_array)); | |
761 | return (struct oid_array *) item->util; | |
762 | } | |
763 | ||
764 | struct collect_changed_submodules_cb_data { | |
765 | struct repository *repo; | |
766 | struct string_list *changed; | |
767 | const struct object_id *commit_oid; | |
768 | }; | |
769 | ||
770 | /* | |
771 | * this would normally be two functions: default_name_from_path() and | |
772 | * path_from_default_name(). Since the default name is the same as | |
773 | * the submodule path we can get away with just one function which only | |
774 | * checks whether there is a submodule in the working directory at that | |
775 | * location. | |
776 | */ | |
777 | static const char *default_name_or_path(const char *path_or_name) | |
778 | { | |
779 | int error_code; | |
780 | ||
781 | if (!is_submodule_populated_gently(path_or_name, &error_code)) | |
782 | return NULL; | |
783 | ||
784 | return path_or_name; | |
785 | } | |
786 | ||
787 | static void collect_changed_submodules_cb(struct diff_queue_struct *q, | |
788 | struct diff_options *options, | |
789 | void *data) | |
790 | { | |
791 | struct collect_changed_submodules_cb_data *me = data; | |
792 | struct string_list *changed = me->changed; | |
793 | const struct object_id *commit_oid = me->commit_oid; | |
794 | int i; | |
795 | ||
796 | for (i = 0; i < q->nr; i++) { | |
797 | struct diff_filepair *p = q->queue[i]; | |
798 | struct oid_array *commits; | |
799 | const struct submodule *submodule; | |
800 | const char *name; | |
801 | ||
802 | if (!S_ISGITLINK(p->two->mode)) | |
803 | continue; | |
804 | ||
805 | submodule = submodule_from_path(me->repo, | |
806 | commit_oid, p->two->path); | |
807 | if (submodule) | |
808 | name = submodule->name; | |
809 | else { | |
810 | name = default_name_or_path(p->two->path); | |
811 | /* make sure name does not collide with existing one */ | |
812 | if (name) | |
813 | submodule = submodule_from_name(me->repo, | |
814 | commit_oid, name); | |
815 | if (submodule) { | |
816 | warning(_("Submodule in commit %s at path: " | |
817 | "'%s' collides with a submodule named " | |
818 | "the same. Skipping it."), | |
819 | oid_to_hex(commit_oid), p->two->path); | |
820 | name = NULL; | |
821 | } | |
822 | } | |
823 | ||
824 | if (!name) | |
825 | continue; | |
826 | ||
827 | commits = submodule_commits(changed, name); | |
828 | oid_array_append(commits, &p->two->oid); | |
829 | } | |
830 | } | |
831 | ||
832 | /* | |
833 | * Collect the paths of submodules in 'changed' which have changed based on | |
834 | * the revisions as specified in 'argv'. Each entry in 'changed' will also | |
835 | * have a corresponding 'struct oid_array' (in the 'util' field) which lists | |
836 | * what the submodule pointers were updated to during the change. | |
837 | */ | |
838 | static void collect_changed_submodules(struct repository *r, | |
839 | struct string_list *changed, | |
840 | struct strvec *argv) | |
841 | { | |
842 | struct rev_info rev; | |
843 | const struct commit *commit; | |
844 | int save_warning; | |
845 | struct setup_revision_opt s_r_opt = { | |
846 | .assume_dashdash = 1, | |
847 | }; | |
848 | ||
849 | save_warning = warn_on_object_refname_ambiguity; | |
850 | warn_on_object_refname_ambiguity = 0; | |
851 | repo_init_revisions(r, &rev, NULL); | |
852 | setup_revisions(argv->nr, argv->v, &rev, &s_r_opt); | |
853 | warn_on_object_refname_ambiguity = save_warning; | |
854 | if (prepare_revision_walk(&rev)) | |
855 | die(_("revision walk setup failed")); | |
856 | ||
857 | while ((commit = get_revision(&rev))) { | |
858 | struct rev_info diff_rev; | |
859 | struct collect_changed_submodules_cb_data data; | |
860 | data.repo = r; | |
861 | data.changed = changed; | |
862 | data.commit_oid = &commit->object.oid; | |
863 | ||
864 | repo_init_revisions(r, &diff_rev, NULL); | |
865 | diff_rev.diffopt.output_format |= DIFF_FORMAT_CALLBACK; | |
866 | diff_rev.diffopt.format_callback = collect_changed_submodules_cb; | |
867 | diff_rev.diffopt.format_callback_data = &data; | |
868 | diff_rev.dense_combined_merges = 1; | |
869 | diff_tree_combined_merge(commit, &diff_rev); | |
870 | } | |
871 | ||
872 | reset_revision_walk(); | |
873 | } | |
874 | ||
875 | static void free_submodules_oids(struct string_list *submodules) | |
876 | { | |
877 | struct string_list_item *item; | |
878 | for_each_string_list_item(item, submodules) | |
879 | oid_array_clear((struct oid_array *) item->util); | |
880 | string_list_clear(submodules, 1); | |
881 | } | |
882 | ||
883 | static int has_remote(const char *refname, const struct object_id *oid, | |
884 | int flags, void *cb_data) | |
885 | { | |
886 | return 1; | |
887 | } | |
888 | ||
889 | static int append_oid_to_argv(const struct object_id *oid, void *data) | |
890 | { | |
891 | struct strvec *argv = data; | |
892 | strvec_push(argv, oid_to_hex(oid)); | |
893 | return 0; | |
894 | } | |
895 | ||
896 | struct has_commit_data { | |
897 | struct repository *repo; | |
898 | int result; | |
899 | const char *path; | |
900 | }; | |
901 | ||
902 | static int check_has_commit(const struct object_id *oid, void *data) | |
903 | { | |
904 | struct has_commit_data *cb = data; | |
905 | ||
906 | enum object_type type = oid_object_info(cb->repo, oid, NULL); | |
907 | ||
908 | switch (type) { | |
909 | case OBJ_COMMIT: | |
910 | return 0; | |
911 | case OBJ_BAD: | |
912 | /* | |
913 | * Object is missing or invalid. If invalid, an error message | |
914 | * has already been printed. | |
915 | */ | |
916 | cb->result = 0; | |
917 | return 0; | |
918 | default: | |
919 | die(_("submodule entry '%s' (%s) is a %s, not a commit"), | |
920 | cb->path, oid_to_hex(oid), type_name(type)); | |
921 | } | |
922 | } | |
923 | ||
924 | static int submodule_has_commits(struct repository *r, | |
925 | const char *path, | |
926 | struct oid_array *commits) | |
927 | { | |
928 | struct has_commit_data has_commit = { r, 1, path }; | |
929 | ||
930 | /* | |
931 | * Perform a cheap, but incorrect check for the existence of 'commits'. | |
932 | * This is done by adding the submodule's object store to the in-core | |
933 | * object store, and then querying for each commit's existence. If we | |
934 | * do not have the commit object anywhere, there is no chance we have | |
935 | * it in the object store of the correct submodule and have it | |
936 | * reachable from a ref, so we can fail early without spawning rev-list | |
937 | * which is expensive. | |
938 | */ | |
939 | if (add_submodule_odb(path)) | |
940 | return 0; | |
941 | ||
942 | oid_array_for_each_unique(commits, check_has_commit, &has_commit); | |
943 | ||
944 | if (has_commit.result) { | |
945 | /* | |
946 | * Even if the submodule is checked out and the commit is | |
947 | * present, make sure it exists in the submodule's object store | |
948 | * and that it is reachable from a ref. | |
949 | */ | |
950 | struct child_process cp = CHILD_PROCESS_INIT; | |
951 | struct strbuf out = STRBUF_INIT; | |
952 | ||
953 | strvec_pushl(&cp.args, "rev-list", "-n", "1", NULL); | |
954 | oid_array_for_each_unique(commits, append_oid_to_argv, &cp.args); | |
955 | strvec_pushl(&cp.args, "--not", "--all", NULL); | |
956 | ||
957 | prepare_submodule_repo_env(&cp.env_array); | |
958 | cp.git_cmd = 1; | |
959 | cp.no_stdin = 1; | |
960 | cp.dir = path; | |
961 | ||
962 | if (capture_command(&cp, &out, GIT_MAX_HEXSZ + 1) || out.len) | |
963 | has_commit.result = 0; | |
964 | ||
965 | strbuf_release(&out); | |
966 | } | |
967 | ||
968 | return has_commit.result; | |
969 | } | |
970 | ||
971 | static int submodule_needs_pushing(struct repository *r, | |
972 | const char *path, | |
973 | struct oid_array *commits) | |
974 | { | |
975 | if (!submodule_has_commits(r, path, commits)) | |
976 | /* | |
977 | * NOTE: We do consider it safe to return "no" here. The | |
978 | * correct answer would be "We do not know" instead of | |
979 | * "No push needed", but it is quite hard to change | |
980 | * the submodule pointer without having the submodule | |
981 | * around. If a user did however change the submodules | |
982 | * without having the submodule around, this indicates | |
983 | * an expert who knows what they are doing or a | |
984 | * maintainer integrating work from other people. In | |
985 | * both cases it should be safe to skip this check. | |
986 | */ | |
987 | return 0; | |
988 | ||
989 | if (for_each_remote_ref_submodule(path, has_remote, NULL) > 0) { | |
990 | struct child_process cp = CHILD_PROCESS_INIT; | |
991 | struct strbuf buf = STRBUF_INIT; | |
992 | int needs_pushing = 0; | |
993 | ||
994 | strvec_push(&cp.args, "rev-list"); | |
995 | oid_array_for_each_unique(commits, append_oid_to_argv, &cp.args); | |
996 | strvec_pushl(&cp.args, "--not", "--remotes", "-n", "1" , NULL); | |
997 | ||
998 | prepare_submodule_repo_env(&cp.env_array); | |
999 | cp.git_cmd = 1; | |
1000 | cp.no_stdin = 1; | |
1001 | cp.out = -1; | |
1002 | cp.dir = path; | |
1003 | if (start_command(&cp)) | |
1004 | die(_("Could not run 'git rev-list <commits> --not --remotes -n 1' command in submodule %s"), | |
1005 | path); | |
1006 | if (strbuf_read(&buf, cp.out, the_hash_algo->hexsz + 1)) | |
1007 | needs_pushing = 1; | |
1008 | finish_command(&cp); | |
1009 | close(cp.out); | |
1010 | strbuf_release(&buf); | |
1011 | return needs_pushing; | |
1012 | } | |
1013 | ||
1014 | return 0; | |
1015 | } | |
1016 | ||
1017 | int find_unpushed_submodules(struct repository *r, | |
1018 | struct oid_array *commits, | |
1019 | const char *remotes_name, | |
1020 | struct string_list *needs_pushing) | |
1021 | { | |
1022 | struct string_list submodules = STRING_LIST_INIT_DUP; | |
1023 | struct string_list_item *name; | |
1024 | struct strvec argv = STRVEC_INIT; | |
1025 | ||
1026 | /* argv.v[0] will be ignored by setup_revisions */ | |
1027 | strvec_push(&argv, "find_unpushed_submodules"); | |
1028 | oid_array_for_each_unique(commits, append_oid_to_argv, &argv); | |
1029 | strvec_push(&argv, "--not"); | |
1030 | strvec_pushf(&argv, "--remotes=%s", remotes_name); | |
1031 | ||
1032 | collect_changed_submodules(r, &submodules, &argv); | |
1033 | ||
1034 | for_each_string_list_item(name, &submodules) { | |
1035 | struct oid_array *commits = name->util; | |
1036 | const struct submodule *submodule; | |
1037 | const char *path = NULL; | |
1038 | ||
1039 | submodule = submodule_from_name(r, &null_oid, name->string); | |
1040 | if (submodule) | |
1041 | path = submodule->path; | |
1042 | else | |
1043 | path = default_name_or_path(name->string); | |
1044 | ||
1045 | if (!path) | |
1046 | continue; | |
1047 | ||
1048 | if (submodule_needs_pushing(r, path, commits)) | |
1049 | string_list_insert(needs_pushing, path); | |
1050 | } | |
1051 | ||
1052 | free_submodules_oids(&submodules); | |
1053 | strvec_clear(&argv); | |
1054 | ||
1055 | return needs_pushing->nr; | |
1056 | } | |
1057 | ||
1058 | static int push_submodule(const char *path, | |
1059 | const struct remote *remote, | |
1060 | const struct refspec *rs, | |
1061 | const struct string_list *push_options, | |
1062 | int dry_run) | |
1063 | { | |
1064 | if (for_each_remote_ref_submodule(path, has_remote, NULL) > 0) { | |
1065 | struct child_process cp = CHILD_PROCESS_INIT; | |
1066 | strvec_push(&cp.args, "push"); | |
1067 | if (dry_run) | |
1068 | strvec_push(&cp.args, "--dry-run"); | |
1069 | ||
1070 | if (push_options && push_options->nr) { | |
1071 | const struct string_list_item *item; | |
1072 | for_each_string_list_item(item, push_options) | |
1073 | strvec_pushf(&cp.args, "--push-option=%s", | |
1074 | item->string); | |
1075 | } | |
1076 | ||
1077 | if (remote->origin != REMOTE_UNCONFIGURED) { | |
1078 | int i; | |
1079 | strvec_push(&cp.args, remote->name); | |
1080 | for (i = 0; i < rs->raw_nr; i++) | |
1081 | strvec_push(&cp.args, rs->raw[i]); | |
1082 | } | |
1083 | ||
1084 | prepare_submodule_repo_env(&cp.env_array); | |
1085 | cp.git_cmd = 1; | |
1086 | cp.no_stdin = 1; | |
1087 | cp.dir = path; | |
1088 | if (run_command(&cp)) | |
1089 | return 0; | |
1090 | close(cp.out); | |
1091 | } | |
1092 | ||
1093 | return 1; | |
1094 | } | |
1095 | ||
1096 | /* | |
1097 | * Perform a check in the submodule to see if the remote and refspec work. | |
1098 | * Die if the submodule can't be pushed. | |
1099 | */ | |
1100 | static void submodule_push_check(const char *path, const char *head, | |
1101 | const struct remote *remote, | |
1102 | const struct refspec *rs) | |
1103 | { | |
1104 | struct child_process cp = CHILD_PROCESS_INIT; | |
1105 | int i; | |
1106 | ||
1107 | strvec_push(&cp.args, "submodule--helper"); | |
1108 | strvec_push(&cp.args, "push-check"); | |
1109 | strvec_push(&cp.args, head); | |
1110 | strvec_push(&cp.args, remote->name); | |
1111 | ||
1112 | for (i = 0; i < rs->raw_nr; i++) | |
1113 | strvec_push(&cp.args, rs->raw[i]); | |
1114 | ||
1115 | prepare_submodule_repo_env(&cp.env_array); | |
1116 | cp.git_cmd = 1; | |
1117 | cp.no_stdin = 1; | |
1118 | cp.no_stdout = 1; | |
1119 | cp.dir = path; | |
1120 | ||
1121 | /* | |
1122 | * Simply indicate if 'submodule--helper push-check' failed. | |
1123 | * More detailed error information will be provided by the | |
1124 | * child process. | |
1125 | */ | |
1126 | if (run_command(&cp)) | |
1127 | die(_("process for submodule '%s' failed"), path); | |
1128 | } | |
1129 | ||
1130 | int push_unpushed_submodules(struct repository *r, | |
1131 | struct oid_array *commits, | |
1132 | const struct remote *remote, | |
1133 | const struct refspec *rs, | |
1134 | const struct string_list *push_options, | |
1135 | int dry_run) | |
1136 | { | |
1137 | int i, ret = 1; | |
1138 | struct string_list needs_pushing = STRING_LIST_INIT_DUP; | |
1139 | ||
1140 | if (!find_unpushed_submodules(r, commits, | |
1141 | remote->name, &needs_pushing)) | |
1142 | return 1; | |
1143 | ||
1144 | /* | |
1145 | * Verify that the remote and refspec can be propagated to all | |
1146 | * submodules. This check can be skipped if the remote and refspec | |
1147 | * won't be propagated due to the remote being unconfigured (e.g. a URL | |
1148 | * instead of a remote name). | |
1149 | */ | |
1150 | if (remote->origin != REMOTE_UNCONFIGURED) { | |
1151 | char *head; | |
1152 | struct object_id head_oid; | |
1153 | ||
1154 | head = resolve_refdup("HEAD", 0, &head_oid, NULL); | |
1155 | if (!head) | |
1156 | die(_("Failed to resolve HEAD as a valid ref.")); | |
1157 | ||
1158 | for (i = 0; i < needs_pushing.nr; i++) | |
1159 | submodule_push_check(needs_pushing.items[i].string, | |
1160 | head, remote, rs); | |
1161 | free(head); | |
1162 | } | |
1163 | ||
1164 | /* Actually push the submodules */ | |
1165 | for (i = 0; i < needs_pushing.nr; i++) { | |
1166 | const char *path = needs_pushing.items[i].string; | |
1167 | fprintf(stderr, _("Pushing submodule '%s'\n"), path); | |
1168 | if (!push_submodule(path, remote, rs, | |
1169 | push_options, dry_run)) { | |
1170 | fprintf(stderr, _("Unable to push submodule '%s'\n"), path); | |
1171 | ret = 0; | |
1172 | } | |
1173 | } | |
1174 | ||
1175 | string_list_clear(&needs_pushing, 0); | |
1176 | ||
1177 | return ret; | |
1178 | } | |
1179 | ||
1180 | static int append_oid_to_array(const char *ref, const struct object_id *oid, | |
1181 | int flags, void *data) | |
1182 | { | |
1183 | struct oid_array *array = data; | |
1184 | oid_array_append(array, oid); | |
1185 | return 0; | |
1186 | } | |
1187 | ||
1188 | void check_for_new_submodule_commits(struct object_id *oid) | |
1189 | { | |
1190 | if (!initialized_fetch_ref_tips) { | |
1191 | for_each_ref(append_oid_to_array, &ref_tips_before_fetch); | |
1192 | initialized_fetch_ref_tips = 1; | |
1193 | } | |
1194 | ||
1195 | oid_array_append(&ref_tips_after_fetch, oid); | |
1196 | } | |
1197 | ||
1198 | static void calculate_changed_submodule_paths(struct repository *r, | |
1199 | struct string_list *changed_submodule_names) | |
1200 | { | |
1201 | struct strvec argv = STRVEC_INIT; | |
1202 | struct string_list_item *name; | |
1203 | ||
1204 | /* No need to check if there are no submodules configured */ | |
1205 | if (!submodule_from_path(r, NULL, NULL)) | |
1206 | return; | |
1207 | ||
1208 | strvec_push(&argv, "--"); /* argv[0] program name */ | |
1209 | oid_array_for_each_unique(&ref_tips_after_fetch, | |
1210 | append_oid_to_argv, &argv); | |
1211 | strvec_push(&argv, "--not"); | |
1212 | oid_array_for_each_unique(&ref_tips_before_fetch, | |
1213 | append_oid_to_argv, &argv); | |
1214 | ||
1215 | /* | |
1216 | * Collect all submodules (whether checked out or not) for which new | |
1217 | * commits have been recorded upstream in "changed_submodule_names". | |
1218 | */ | |
1219 | collect_changed_submodules(r, changed_submodule_names, &argv); | |
1220 | ||
1221 | for_each_string_list_item(name, changed_submodule_names) { | |
1222 | struct oid_array *commits = name->util; | |
1223 | const struct submodule *submodule; | |
1224 | const char *path = NULL; | |
1225 | ||
1226 | submodule = submodule_from_name(r, &null_oid, name->string); | |
1227 | if (submodule) | |
1228 | path = submodule->path; | |
1229 | else | |
1230 | path = default_name_or_path(name->string); | |
1231 | ||
1232 | if (!path) | |
1233 | continue; | |
1234 | ||
1235 | if (submodule_has_commits(r, path, commits)) { | |
1236 | oid_array_clear(commits); | |
1237 | *name->string = '\0'; | |
1238 | } | |
1239 | } | |
1240 | ||
1241 | string_list_remove_empty_items(changed_submodule_names, 1); | |
1242 | ||
1243 | strvec_clear(&argv); | |
1244 | oid_array_clear(&ref_tips_before_fetch); | |
1245 | oid_array_clear(&ref_tips_after_fetch); | |
1246 | initialized_fetch_ref_tips = 0; | |
1247 | } | |
1248 | ||
1249 | int submodule_touches_in_range(struct repository *r, | |
1250 | struct object_id *excl_oid, | |
1251 | struct object_id *incl_oid) | |
1252 | { | |
1253 | struct string_list subs = STRING_LIST_INIT_DUP; | |
1254 | struct strvec args = STRVEC_INIT; | |
1255 | int ret; | |
1256 | ||
1257 | /* No need to check if there are no submodules configured */ | |
1258 | if (!submodule_from_path(r, NULL, NULL)) | |
1259 | return 0; | |
1260 | ||
1261 | strvec_push(&args, "--"); /* args[0] program name */ | |
1262 | strvec_push(&args, oid_to_hex(incl_oid)); | |
1263 | if (!is_null_oid(excl_oid)) { | |
1264 | strvec_push(&args, "--not"); | |
1265 | strvec_push(&args, oid_to_hex(excl_oid)); | |
1266 | } | |
1267 | ||
1268 | collect_changed_submodules(r, &subs, &args); | |
1269 | ret = subs.nr; | |
1270 | ||
1271 | strvec_clear(&args); | |
1272 | ||
1273 | free_submodules_oids(&subs); | |
1274 | return ret; | |
1275 | } | |
1276 | ||
1277 | struct submodule_parallel_fetch { | |
1278 | int count; | |
1279 | struct strvec args; | |
1280 | struct repository *r; | |
1281 | const char *prefix; | |
1282 | int command_line_option; | |
1283 | int default_option; | |
1284 | int quiet; | |
1285 | int result; | |
1286 | ||
1287 | struct string_list changed_submodule_names; | |
1288 | ||
1289 | /* Pending fetches by OIDs */ | |
1290 | struct fetch_task **oid_fetch_tasks; | |
1291 | int oid_fetch_tasks_nr, oid_fetch_tasks_alloc; | |
1292 | ||
1293 | struct strbuf submodules_with_errors; | |
1294 | }; | |
1295 | #define SPF_INIT {0, STRVEC_INIT, NULL, NULL, 0, 0, 0, 0, \ | |
1296 | STRING_LIST_INIT_DUP, \ | |
1297 | NULL, 0, 0, STRBUF_INIT} | |
1298 | ||
1299 | static int get_fetch_recurse_config(const struct submodule *submodule, | |
1300 | struct submodule_parallel_fetch *spf) | |
1301 | { | |
1302 | if (spf->command_line_option != RECURSE_SUBMODULES_DEFAULT) | |
1303 | return spf->command_line_option; | |
1304 | ||
1305 | if (submodule) { | |
1306 | char *key; | |
1307 | const char *value; | |
1308 | ||
1309 | int fetch_recurse = submodule->fetch_recurse; | |
1310 | key = xstrfmt("submodule.%s.fetchRecurseSubmodules", submodule->name); | |
1311 | if (!repo_config_get_string_tmp(spf->r, key, &value)) { | |
1312 | fetch_recurse = parse_fetch_recurse_submodules_arg(key, value); | |
1313 | } | |
1314 | free(key); | |
1315 | ||
1316 | if (fetch_recurse != RECURSE_SUBMODULES_NONE) | |
1317 | /* local config overrules everything except commandline */ | |
1318 | return fetch_recurse; | |
1319 | } | |
1320 | ||
1321 | return spf->default_option; | |
1322 | } | |
1323 | ||
1324 | /* | |
1325 | * Fetch in progress (if callback data) or | |
1326 | * pending (if in oid_fetch_tasks in struct submodule_parallel_fetch) | |
1327 | */ | |
1328 | struct fetch_task { | |
1329 | struct repository *repo; | |
1330 | const struct submodule *sub; | |
1331 | unsigned free_sub : 1; /* Do we need to free the submodule? */ | |
1332 | ||
1333 | struct oid_array *commits; /* Ensure these commits are fetched */ | |
1334 | }; | |
1335 | ||
1336 | /** | |
1337 | * When a submodule is not defined in .gitmodules, we cannot access it | |
1338 | * via the regular submodule-config. Create a fake submodule, which we can | |
1339 | * work on. | |
1340 | */ | |
1341 | static const struct submodule *get_non_gitmodules_submodule(const char *path) | |
1342 | { | |
1343 | struct submodule *ret = NULL; | |
1344 | const char *name = default_name_or_path(path); | |
1345 | ||
1346 | if (!name) | |
1347 | return NULL; | |
1348 | ||
1349 | ret = xmalloc(sizeof(*ret)); | |
1350 | memset(ret, 0, sizeof(*ret)); | |
1351 | ret->path = name; | |
1352 | ret->name = name; | |
1353 | ||
1354 | return (const struct submodule *) ret; | |
1355 | } | |
1356 | ||
1357 | static struct fetch_task *fetch_task_create(struct repository *r, | |
1358 | const char *path) | |
1359 | { | |
1360 | struct fetch_task *task = xmalloc(sizeof(*task)); | |
1361 | memset(task, 0, sizeof(*task)); | |
1362 | ||
1363 | task->sub = submodule_from_path(r, &null_oid, path); | |
1364 | if (!task->sub) { | |
1365 | /* | |
1366 | * No entry in .gitmodules? Technically not a submodule, | |
1367 | * but historically we supported repositories that happen to be | |
1368 | * in-place where a gitlink is. Keep supporting them. | |
1369 | */ | |
1370 | task->sub = get_non_gitmodules_submodule(path); | |
1371 | if (!task->sub) { | |
1372 | free(task); | |
1373 | return NULL; | |
1374 | } | |
1375 | ||
1376 | task->free_sub = 1; | |
1377 | } | |
1378 | ||
1379 | return task; | |
1380 | } | |
1381 | ||
1382 | static void fetch_task_release(struct fetch_task *p) | |
1383 | { | |
1384 | if (p->free_sub) | |
1385 | free((void*)p->sub); | |
1386 | p->free_sub = 0; | |
1387 | p->sub = NULL; | |
1388 | ||
1389 | if (p->repo) | |
1390 | repo_clear(p->repo); | |
1391 | FREE_AND_NULL(p->repo); | |
1392 | } | |
1393 | ||
1394 | static struct repository *get_submodule_repo_for(struct repository *r, | |
1395 | const struct submodule *sub) | |
1396 | { | |
1397 | struct repository *ret = xmalloc(sizeof(*ret)); | |
1398 | ||
1399 | if (repo_submodule_init(ret, r, sub)) { | |
1400 | /* | |
1401 | * No entry in .gitmodules? Technically not a submodule, | |
1402 | * but historically we supported repositories that happen to be | |
1403 | * in-place where a gitlink is. Keep supporting them. | |
1404 | */ | |
1405 | struct strbuf gitdir = STRBUF_INIT; | |
1406 | strbuf_repo_worktree_path(&gitdir, r, "%s/.git", sub->path); | |
1407 | if (repo_init(ret, gitdir.buf, NULL)) { | |
1408 | strbuf_release(&gitdir); | |
1409 | free(ret); | |
1410 | return NULL; | |
1411 | } | |
1412 | strbuf_release(&gitdir); | |
1413 | } | |
1414 | ||
1415 | return ret; | |
1416 | } | |
1417 | ||
1418 | static int get_next_submodule(struct child_process *cp, | |
1419 | struct strbuf *err, void *data, void **task_cb) | |
1420 | { | |
1421 | struct submodule_parallel_fetch *spf = data; | |
1422 | ||
1423 | for (; spf->count < spf->r->index->cache_nr; spf->count++) { | |
1424 | const struct cache_entry *ce = spf->r->index->cache[spf->count]; | |
1425 | const char *default_argv; | |
1426 | struct fetch_task *task; | |
1427 | ||
1428 | if (!S_ISGITLINK(ce->ce_mode)) | |
1429 | continue; | |
1430 | ||
1431 | task = fetch_task_create(spf->r, ce->name); | |
1432 | if (!task) | |
1433 | continue; | |
1434 | ||
1435 | switch (get_fetch_recurse_config(task->sub, spf)) | |
1436 | { | |
1437 | default: | |
1438 | case RECURSE_SUBMODULES_DEFAULT: | |
1439 | case RECURSE_SUBMODULES_ON_DEMAND: | |
1440 | if (!task->sub || | |
1441 | !string_list_lookup( | |
1442 | &spf->changed_submodule_names, | |
1443 | task->sub->name)) | |
1444 | continue; | |
1445 | default_argv = "on-demand"; | |
1446 | break; | |
1447 | case RECURSE_SUBMODULES_ON: | |
1448 | default_argv = "yes"; | |
1449 | break; | |
1450 | case RECURSE_SUBMODULES_OFF: | |
1451 | continue; | |
1452 | } | |
1453 | ||
1454 | task->repo = get_submodule_repo_for(spf->r, task->sub); | |
1455 | if (task->repo) { | |
1456 | struct strbuf submodule_prefix = STRBUF_INIT; | |
1457 | child_process_init(cp); | |
1458 | cp->dir = task->repo->gitdir; | |
1459 | prepare_submodule_repo_env_in_gitdir(&cp->env_array); | |
1460 | cp->git_cmd = 1; | |
1461 | if (!spf->quiet) | |
1462 | strbuf_addf(err, _("Fetching submodule %s%s\n"), | |
1463 | spf->prefix, ce->name); | |
1464 | strvec_init(&cp->args); | |
1465 | strvec_pushv(&cp->args, spf->args.v); | |
1466 | strvec_push(&cp->args, default_argv); | |
1467 | strvec_push(&cp->args, "--submodule-prefix"); | |
1468 | ||
1469 | strbuf_addf(&submodule_prefix, "%s%s/", | |
1470 | spf->prefix, | |
1471 | task->sub->path); | |
1472 | strvec_push(&cp->args, submodule_prefix.buf); | |
1473 | ||
1474 | spf->count++; | |
1475 | *task_cb = task; | |
1476 | ||
1477 | strbuf_release(&submodule_prefix); | |
1478 | return 1; | |
1479 | } else { | |
1480 | ||
1481 | fetch_task_release(task); | |
1482 | free(task); | |
1483 | ||
1484 | /* | |
1485 | * An empty directory is normal, | |
1486 | * the submodule is not initialized | |
1487 | */ | |
1488 | if (S_ISGITLINK(ce->ce_mode) && | |
1489 | !is_empty_dir(ce->name)) { | |
1490 | spf->result = 1; | |
1491 | strbuf_addf(err, | |
1492 | _("Could not access submodule '%s'\n"), | |
1493 | ce->name); | |
1494 | } | |
1495 | } | |
1496 | } | |
1497 | ||
1498 | if (spf->oid_fetch_tasks_nr) { | |
1499 | struct fetch_task *task = | |
1500 | spf->oid_fetch_tasks[spf->oid_fetch_tasks_nr - 1]; | |
1501 | struct strbuf submodule_prefix = STRBUF_INIT; | |
1502 | spf->oid_fetch_tasks_nr--; | |
1503 | ||
1504 | strbuf_addf(&submodule_prefix, "%s%s/", | |
1505 | spf->prefix, task->sub->path); | |
1506 | ||
1507 | child_process_init(cp); | |
1508 | prepare_submodule_repo_env_in_gitdir(&cp->env_array); | |
1509 | cp->git_cmd = 1; | |
1510 | cp->dir = task->repo->gitdir; | |
1511 | ||
1512 | strvec_init(&cp->args); | |
1513 | strvec_pushv(&cp->args, spf->args.v); | |
1514 | strvec_push(&cp->args, "on-demand"); | |
1515 | strvec_push(&cp->args, "--submodule-prefix"); | |
1516 | strvec_push(&cp->args, submodule_prefix.buf); | |
1517 | ||
1518 | /* NEEDSWORK: have get_default_remote from submodule--helper */ | |
1519 | strvec_push(&cp->args, "origin"); | |
1520 | oid_array_for_each_unique(task->commits, | |
1521 | append_oid_to_argv, &cp->args); | |
1522 | ||
1523 | *task_cb = task; | |
1524 | strbuf_release(&submodule_prefix); | |
1525 | return 1; | |
1526 | } | |
1527 | ||
1528 | return 0; | |
1529 | } | |
1530 | ||
1531 | static int fetch_start_failure(struct strbuf *err, | |
1532 | void *cb, void *task_cb) | |
1533 | { | |
1534 | struct submodule_parallel_fetch *spf = cb; | |
1535 | struct fetch_task *task = task_cb; | |
1536 | ||
1537 | spf->result = 1; | |
1538 | ||
1539 | fetch_task_release(task); | |
1540 | return 0; | |
1541 | } | |
1542 | ||
1543 | static int commit_missing_in_sub(const struct object_id *oid, void *data) | |
1544 | { | |
1545 | struct repository *subrepo = data; | |
1546 | ||
1547 | enum object_type type = oid_object_info(subrepo, oid, NULL); | |
1548 | ||
1549 | return type != OBJ_COMMIT; | |
1550 | } | |
1551 | ||
1552 | static int fetch_finish(int retvalue, struct strbuf *err, | |
1553 | void *cb, void *task_cb) | |
1554 | { | |
1555 | struct submodule_parallel_fetch *spf = cb; | |
1556 | struct fetch_task *task = task_cb; | |
1557 | ||
1558 | struct string_list_item *it; | |
1559 | struct oid_array *commits; | |
1560 | ||
1561 | if (!task || !task->sub) | |
1562 | BUG("callback cookie bogus"); | |
1563 | ||
1564 | if (retvalue) { | |
1565 | /* | |
1566 | * NEEDSWORK: This indicates that the overall fetch | |
1567 | * failed, even though there may be a subsequent fetch | |
1568 | * by commit hash that might work. It may be a good | |
1569 | * idea to not indicate failure in this case, and only | |
1570 | * indicate failure if the subsequent fetch fails. | |
1571 | */ | |
1572 | spf->result = 1; | |
1573 | ||
1574 | strbuf_addf(&spf->submodules_with_errors, "\t%s\n", | |
1575 | task->sub->name); | |
1576 | } | |
1577 | ||
1578 | /* Is this the second time we process this submodule? */ | |
1579 | if (task->commits) | |
1580 | goto out; | |
1581 | ||
1582 | it = string_list_lookup(&spf->changed_submodule_names, task->sub->name); | |
1583 | if (!it) | |
1584 | /* Could be an unchanged submodule, not contained in the list */ | |
1585 | goto out; | |
1586 | ||
1587 | commits = it->util; | |
1588 | oid_array_filter(commits, | |
1589 | commit_missing_in_sub, | |
1590 | task->repo); | |
1591 | ||
1592 | /* Are there commits we want, but do not exist? */ | |
1593 | if (commits->nr) { | |
1594 | task->commits = commits; | |
1595 | ALLOC_GROW(spf->oid_fetch_tasks, | |
1596 | spf->oid_fetch_tasks_nr + 1, | |
1597 | spf->oid_fetch_tasks_alloc); | |
1598 | spf->oid_fetch_tasks[spf->oid_fetch_tasks_nr] = task; | |
1599 | spf->oid_fetch_tasks_nr++; | |
1600 | return 0; | |
1601 | } | |
1602 | ||
1603 | out: | |
1604 | fetch_task_release(task); | |
1605 | ||
1606 | return 0; | |
1607 | } | |
1608 | ||
1609 | int fetch_populated_submodules(struct repository *r, | |
1610 | const struct strvec *options, | |
1611 | const char *prefix, int command_line_option, | |
1612 | int default_option, | |
1613 | int quiet, int max_parallel_jobs) | |
1614 | { | |
1615 | int i; | |
1616 | struct submodule_parallel_fetch spf = SPF_INIT; | |
1617 | ||
1618 | spf.r = r; | |
1619 | spf.command_line_option = command_line_option; | |
1620 | spf.default_option = default_option; | |
1621 | spf.quiet = quiet; | |
1622 | spf.prefix = prefix; | |
1623 | ||
1624 | if (!r->worktree) | |
1625 | goto out; | |
1626 | ||
1627 | if (repo_read_index(r) < 0) | |
1628 | die(_("index file corrupt")); | |
1629 | ||
1630 | strvec_push(&spf.args, "fetch"); | |
1631 | for (i = 0; i < options->nr; i++) | |
1632 | strvec_push(&spf.args, options->v[i]); | |
1633 | strvec_push(&spf.args, "--recurse-submodules-default"); | |
1634 | /* default value, "--submodule-prefix" and its value are added later */ | |
1635 | ||
1636 | calculate_changed_submodule_paths(r, &spf.changed_submodule_names); | |
1637 | string_list_sort(&spf.changed_submodule_names); | |
1638 | run_processes_parallel_tr2(max_parallel_jobs, | |
1639 | get_next_submodule, | |
1640 | fetch_start_failure, | |
1641 | fetch_finish, | |
1642 | &spf, | |
1643 | "submodule", "parallel/fetch"); | |
1644 | ||
1645 | if (spf.submodules_with_errors.len > 0) | |
1646 | fprintf(stderr, _("Errors during submodule fetch:\n%s"), | |
1647 | spf.submodules_with_errors.buf); | |
1648 | ||
1649 | ||
1650 | strvec_clear(&spf.args); | |
1651 | out: | |
1652 | free_submodules_oids(&spf.changed_submodule_names); | |
1653 | return spf.result; | |
1654 | } | |
1655 | ||
1656 | unsigned is_submodule_modified(const char *path, int ignore_untracked) | |
1657 | { | |
1658 | struct child_process cp = CHILD_PROCESS_INIT; | |
1659 | struct strbuf buf = STRBUF_INIT; | |
1660 | FILE *fp; | |
1661 | unsigned dirty_submodule = 0; | |
1662 | const char *git_dir; | |
1663 | int ignore_cp_exit_code = 0; | |
1664 | ||
1665 | strbuf_addf(&buf, "%s/.git", path); | |
1666 | git_dir = read_gitfile(buf.buf); | |
1667 | if (!git_dir) | |
1668 | git_dir = buf.buf; | |
1669 | if (!is_git_directory(git_dir)) { | |
1670 | if (is_directory(git_dir)) | |
1671 | die(_("'%s' not recognized as a git repository"), git_dir); | |
1672 | strbuf_release(&buf); | |
1673 | /* The submodule is not checked out, so it is not modified */ | |
1674 | return 0; | |
1675 | } | |
1676 | strbuf_reset(&buf); | |
1677 | ||
1678 | strvec_pushl(&cp.args, "status", "--porcelain=2", NULL); | |
1679 | if (ignore_untracked) | |
1680 | strvec_push(&cp.args, "-uno"); | |
1681 | ||
1682 | prepare_submodule_repo_env(&cp.env_array); | |
1683 | cp.git_cmd = 1; | |
1684 | cp.no_stdin = 1; | |
1685 | cp.out = -1; | |
1686 | cp.dir = path; | |
1687 | if (start_command(&cp)) | |
1688 | die(_("Could not run 'git status --porcelain=2' in submodule %s"), path); | |
1689 | ||
1690 | fp = xfdopen(cp.out, "r"); | |
1691 | while (strbuf_getwholeline(&buf, fp, '\n') != EOF) { | |
1692 | /* regular untracked files */ | |
1693 | if (buf.buf[0] == '?') | |
1694 | dirty_submodule |= DIRTY_SUBMODULE_UNTRACKED; | |
1695 | ||
1696 | if (buf.buf[0] == 'u' || | |
1697 | buf.buf[0] == '1' || | |
1698 | buf.buf[0] == '2') { | |
1699 | /* T = line type, XY = status, SSSS = submodule state */ | |
1700 | if (buf.len < strlen("T XY SSSS")) | |
1701 | BUG("invalid status --porcelain=2 line %s", | |
1702 | buf.buf); | |
1703 | ||
1704 | if (buf.buf[5] == 'S' && buf.buf[8] == 'U') | |
1705 | /* nested untracked file */ | |
1706 | dirty_submodule |= DIRTY_SUBMODULE_UNTRACKED; | |
1707 | ||
1708 | if (buf.buf[0] == 'u' || | |
1709 | buf.buf[0] == '2' || | |
1710 | memcmp(buf.buf + 5, "S..U", 4)) | |
1711 | /* other change */ | |
1712 | dirty_submodule |= DIRTY_SUBMODULE_MODIFIED; | |
1713 | } | |
1714 | ||
1715 | if ((dirty_submodule & DIRTY_SUBMODULE_MODIFIED) && | |
1716 | ((dirty_submodule & DIRTY_SUBMODULE_UNTRACKED) || | |
1717 | ignore_untracked)) { | |
1718 | /* | |
1719 | * We're not interested in any further information from | |
1720 | * the child any more, neither output nor its exit code. | |
1721 | */ | |
1722 | ignore_cp_exit_code = 1; | |
1723 | break; | |
1724 | } | |
1725 | } | |
1726 | fclose(fp); | |
1727 | ||
1728 | if (finish_command(&cp) && !ignore_cp_exit_code) | |
1729 | die(_("'git status --porcelain=2' failed in submodule %s"), path); | |
1730 | ||
1731 | strbuf_release(&buf); | |
1732 | return dirty_submodule; | |
1733 | } | |
1734 | ||
1735 | int submodule_uses_gitfile(const char *path) | |
1736 | { | |
1737 | struct child_process cp = CHILD_PROCESS_INIT; | |
1738 | struct strbuf buf = STRBUF_INIT; | |
1739 | const char *git_dir; | |
1740 | ||
1741 | strbuf_addf(&buf, "%s/.git", path); | |
1742 | git_dir = read_gitfile(buf.buf); | |
1743 | if (!git_dir) { | |
1744 | strbuf_release(&buf); | |
1745 | return 0; | |
1746 | } | |
1747 | strbuf_release(&buf); | |
1748 | ||
1749 | /* Now test that all nested submodules use a gitfile too */ | |
1750 | strvec_pushl(&cp.args, | |
1751 | "submodule", "foreach", "--quiet", "--recursive", | |
1752 | "test -f .git", NULL); | |
1753 | ||
1754 | prepare_submodule_repo_env(&cp.env_array); | |
1755 | cp.git_cmd = 1; | |
1756 | cp.no_stdin = 1; | |
1757 | cp.no_stderr = 1; | |
1758 | cp.no_stdout = 1; | |
1759 | cp.dir = path; | |
1760 | if (run_command(&cp)) | |
1761 | return 0; | |
1762 | ||
1763 | return 1; | |
1764 | } | |
1765 | ||
1766 | /* | |
1767 | * Check if it is a bad idea to remove a submodule, i.e. if we'd lose data | |
1768 | * when doing so. | |
1769 | * | |
1770 | * Return 1 if we'd lose data, return 0 if the removal is fine, | |
1771 | * and negative values for errors. | |
1772 | */ | |
1773 | int bad_to_remove_submodule(const char *path, unsigned flags) | |
1774 | { | |
1775 | ssize_t len; | |
1776 | struct child_process cp = CHILD_PROCESS_INIT; | |
1777 | struct strbuf buf = STRBUF_INIT; | |
1778 | int ret = 0; | |
1779 | ||
1780 | if (!file_exists(path) || is_empty_dir(path)) | |
1781 | return 0; | |
1782 | ||
1783 | if (!submodule_uses_gitfile(path)) | |
1784 | return 1; | |
1785 | ||
1786 | strvec_pushl(&cp.args, "status", "--porcelain", | |
1787 | "--ignore-submodules=none", NULL); | |
1788 | ||
1789 | if (flags & SUBMODULE_REMOVAL_IGNORE_UNTRACKED) | |
1790 | strvec_push(&cp.args, "-uno"); | |
1791 | else | |
1792 | strvec_push(&cp.args, "-uall"); | |
1793 | ||
1794 | if (!(flags & SUBMODULE_REMOVAL_IGNORE_IGNORED_UNTRACKED)) | |
1795 | strvec_push(&cp.args, "--ignored"); | |
1796 | ||
1797 | prepare_submodule_repo_env(&cp.env_array); | |
1798 | cp.git_cmd = 1; | |
1799 | cp.no_stdin = 1; | |
1800 | cp.out = -1; | |
1801 | cp.dir = path; | |
1802 | if (start_command(&cp)) { | |
1803 | if (flags & SUBMODULE_REMOVAL_DIE_ON_ERROR) | |
1804 | die(_("could not start 'git status' in submodule '%s'"), | |
1805 | path); | |
1806 | ret = -1; | |
1807 | goto out; | |
1808 | } | |
1809 | ||
1810 | len = strbuf_read(&buf, cp.out, 1024); | |
1811 | if (len > 2) | |
1812 | ret = 1; | |
1813 | close(cp.out); | |
1814 | ||
1815 | if (finish_command(&cp)) { | |
1816 | if (flags & SUBMODULE_REMOVAL_DIE_ON_ERROR) | |
1817 | die(_("could not run 'git status' in submodule '%s'"), | |
1818 | path); | |
1819 | ret = -1; | |
1820 | } | |
1821 | out: | |
1822 | strbuf_release(&buf); | |
1823 | return ret; | |
1824 | } | |
1825 | ||
1826 | void submodule_unset_core_worktree(const struct submodule *sub) | |
1827 | { | |
1828 | char *config_path = xstrfmt("%s/modules/%s/config", | |
1829 | get_git_dir(), sub->name); | |
1830 | ||
1831 | if (git_config_set_in_file_gently(config_path, "core.worktree", NULL)) | |
1832 | warning(_("Could not unset core.worktree setting in submodule '%s'"), | |
1833 | sub->path); | |
1834 | ||
1835 | free(config_path); | |
1836 | } | |
1837 | ||
1838 | static const char *get_super_prefix_or_empty(void) | |
1839 | { | |
1840 | const char *s = get_super_prefix(); | |
1841 | if (!s) | |
1842 | s = ""; | |
1843 | return s; | |
1844 | } | |
1845 | ||
1846 | static int submodule_has_dirty_index(const struct submodule *sub) | |
1847 | { | |
1848 | struct child_process cp = CHILD_PROCESS_INIT; | |
1849 | ||
1850 | prepare_submodule_repo_env(&cp.env_array); | |
1851 | ||
1852 | cp.git_cmd = 1; | |
1853 | strvec_pushl(&cp.args, "diff-index", "--quiet", | |
1854 | "--cached", "HEAD", NULL); | |
1855 | cp.no_stdin = 1; | |
1856 | cp.no_stdout = 1; | |
1857 | cp.dir = sub->path; | |
1858 | if (start_command(&cp)) | |
1859 | die(_("could not recurse into submodule '%s'"), sub->path); | |
1860 | ||
1861 | return finish_command(&cp); | |
1862 | } | |
1863 | ||
1864 | static void submodule_reset_index(const char *path) | |
1865 | { | |
1866 | struct child_process cp = CHILD_PROCESS_INIT; | |
1867 | prepare_submodule_repo_env(&cp.env_array); | |
1868 | ||
1869 | cp.git_cmd = 1; | |
1870 | cp.no_stdin = 1; | |
1871 | cp.dir = path; | |
1872 | ||
1873 | strvec_pushf(&cp.args, "--super-prefix=%s%s/", | |
1874 | get_super_prefix_or_empty(), path); | |
1875 | strvec_pushl(&cp.args, "read-tree", "-u", "--reset", NULL); | |
1876 | ||
1877 | strvec_push(&cp.args, empty_tree_oid_hex()); | |
1878 | ||
1879 | if (run_command(&cp)) | |
1880 | die(_("could not reset submodule index")); | |
1881 | } | |
1882 | ||
1883 | /** | |
1884 | * Moves a submodule at a given path from a given head to another new head. | |
1885 | * For edge cases (a submodule coming into existence or removing a submodule) | |
1886 | * pass NULL for old or new respectively. | |
1887 | */ | |
1888 | int submodule_move_head(const char *path, | |
1889 | const char *old_head, | |
1890 | const char *new_head, | |
1891 | unsigned flags) | |
1892 | { | |
1893 | int ret = 0; | |
1894 | struct child_process cp = CHILD_PROCESS_INIT; | |
1895 | const struct submodule *sub; | |
1896 | int *error_code_ptr, error_code; | |
1897 | ||
1898 | if (!is_submodule_active(the_repository, path)) | |
1899 | return 0; | |
1900 | ||
1901 | if (flags & SUBMODULE_MOVE_HEAD_FORCE) | |
1902 | /* | |
1903 | * Pass non NULL pointer to is_submodule_populated_gently | |
1904 | * to prevent die()-ing. We'll use connect_work_tree_and_git_dir | |
1905 | * to fixup the submodule in the force case later. | |
1906 | */ | |
1907 | error_code_ptr = &error_code; | |
1908 | else | |
1909 | error_code_ptr = NULL; | |
1910 | ||
1911 | if (old_head && !is_submodule_populated_gently(path, error_code_ptr)) | |
1912 | return 0; | |
1913 | ||
1914 | sub = submodule_from_path(the_repository, &null_oid, path); | |
1915 | ||
1916 | if (!sub) | |
1917 | BUG("could not get submodule information for '%s'", path); | |
1918 | ||
1919 | if (old_head && !(flags & SUBMODULE_MOVE_HEAD_FORCE)) { | |
1920 | /* Check if the submodule has a dirty index. */ | |
1921 | if (submodule_has_dirty_index(sub)) | |
1922 | return error(_("submodule '%s' has dirty index"), path); | |
1923 | } | |
1924 | ||
1925 | if (!(flags & SUBMODULE_MOVE_HEAD_DRY_RUN)) { | |
1926 | if (old_head) { | |
1927 | if (!submodule_uses_gitfile(path)) | |
1928 | absorb_git_dir_into_superproject(path, | |
1929 | ABSORB_GITDIR_RECURSE_SUBMODULES); | |
1930 | } else { | |
1931 | char *gitdir = xstrfmt("%s/modules/%s", | |
1932 | get_git_dir(), sub->name); | |
1933 | connect_work_tree_and_git_dir(path, gitdir, 0); | |
1934 | free(gitdir); | |
1935 | ||
1936 | /* make sure the index is clean as well */ | |
1937 | submodule_reset_index(path); | |
1938 | } | |
1939 | ||
1940 | if (old_head && (flags & SUBMODULE_MOVE_HEAD_FORCE)) { | |
1941 | char *gitdir = xstrfmt("%s/modules/%s", | |
1942 | get_git_dir(), sub->name); | |
1943 | connect_work_tree_and_git_dir(path, gitdir, 1); | |
1944 | free(gitdir); | |
1945 | } | |
1946 | } | |
1947 | ||
1948 | prepare_submodule_repo_env(&cp.env_array); | |
1949 | ||
1950 | cp.git_cmd = 1; | |
1951 | cp.no_stdin = 1; | |
1952 | cp.dir = path; | |
1953 | ||
1954 | strvec_pushf(&cp.args, "--super-prefix=%s%s/", | |
1955 | get_super_prefix_or_empty(), path); | |
1956 | strvec_pushl(&cp.args, "read-tree", "--recurse-submodules", NULL); | |
1957 | ||
1958 | if (flags & SUBMODULE_MOVE_HEAD_DRY_RUN) | |
1959 | strvec_push(&cp.args, "-n"); | |
1960 | else | |
1961 | strvec_push(&cp.args, "-u"); | |
1962 | ||
1963 | if (flags & SUBMODULE_MOVE_HEAD_FORCE) | |
1964 | strvec_push(&cp.args, "--reset"); | |
1965 | else | |
1966 | strvec_push(&cp.args, "-m"); | |
1967 | ||
1968 | if (!(flags & SUBMODULE_MOVE_HEAD_FORCE)) | |
1969 | strvec_push(&cp.args, old_head ? old_head : empty_tree_oid_hex()); | |
1970 | ||
1971 | strvec_push(&cp.args, new_head ? new_head : empty_tree_oid_hex()); | |
1972 | ||
1973 | if (run_command(&cp)) { | |
1974 | ret = error(_("Submodule '%s' could not be updated."), path); | |
1975 | goto out; | |
1976 | } | |
1977 | ||
1978 | if (!(flags & SUBMODULE_MOVE_HEAD_DRY_RUN)) { | |
1979 | if (new_head) { | |
1980 | child_process_init(&cp); | |
1981 | /* also set the HEAD accordingly */ | |
1982 | cp.git_cmd = 1; | |
1983 | cp.no_stdin = 1; | |
1984 | cp.dir = path; | |
1985 | ||
1986 | prepare_submodule_repo_env(&cp.env_array); | |
1987 | strvec_pushl(&cp.args, "update-ref", "HEAD", | |
1988 | "--no-deref", new_head, NULL); | |
1989 | ||
1990 | if (run_command(&cp)) { | |
1991 | ret = -1; | |
1992 | goto out; | |
1993 | } | |
1994 | } else { | |
1995 | struct strbuf sb = STRBUF_INIT; | |
1996 | ||
1997 | strbuf_addf(&sb, "%s/.git", path); | |
1998 | unlink_or_warn(sb.buf); | |
1999 | strbuf_release(&sb); | |
2000 | ||
2001 | if (is_empty_dir(path)) | |
2002 | rmdir_or_warn(path); | |
2003 | ||
2004 | submodule_unset_core_worktree(sub); | |
2005 | } | |
2006 | } | |
2007 | out: | |
2008 | return ret; | |
2009 | } | |
2010 | ||
2011 | int validate_submodule_git_dir(char *git_dir, const char *submodule_name) | |
2012 | { | |
2013 | size_t len = strlen(git_dir), suffix_len = strlen(submodule_name); | |
2014 | char *p; | |
2015 | int ret = 0; | |
2016 | ||
2017 | if (len <= suffix_len || (p = git_dir + len - suffix_len)[-1] != '/' || | |
2018 | strcmp(p, submodule_name)) | |
2019 | BUG("submodule name '%s' not a suffix of git dir '%s'", | |
2020 | submodule_name, git_dir); | |
2021 | ||
2022 | /* | |
2023 | * We prevent the contents of sibling submodules' git directories to | |
2024 | * clash. | |
2025 | * | |
2026 | * Example: having a submodule named `hippo` and another one named | |
2027 | * `hippo/hooks` would result in the git directories | |
2028 | * `.git/modules/hippo/` and `.git/modules/hippo/hooks/`, respectively, | |
2029 | * but the latter directory is already designated to contain the hooks | |
2030 | * of the former. | |
2031 | */ | |
2032 | for (; *p; p++) { | |
2033 | if (is_dir_sep(*p)) { | |
2034 | char c = *p; | |
2035 | ||
2036 | *p = '\0'; | |
2037 | if (is_git_directory(git_dir)) | |
2038 | ret = -1; | |
2039 | *p = c; | |
2040 | ||
2041 | if (ret < 0) | |
2042 | return error(_("submodule git dir '%s' is " | |
2043 | "inside git dir '%.*s'"), | |
2044 | git_dir, | |
2045 | (int)(p - git_dir), git_dir); | |
2046 | } | |
2047 | } | |
2048 | ||
2049 | return 0; | |
2050 | } | |
2051 | ||
2052 | /* | |
2053 | * Embeds a single submodules git directory into the superprojects git dir, | |
2054 | * non recursively. | |
2055 | */ | |
2056 | static void relocate_single_git_dir_into_superproject(const char *path) | |
2057 | { | |
2058 | char *old_git_dir = NULL, *real_old_git_dir = NULL, *real_new_git_dir = NULL; | |
2059 | char *new_git_dir; | |
2060 | const struct submodule *sub; | |
2061 | ||
2062 | if (submodule_uses_worktrees(path)) | |
2063 | die(_("relocate_gitdir for submodule '%s' with " | |
2064 | "more than one worktree not supported"), path); | |
2065 | ||
2066 | old_git_dir = xstrfmt("%s/.git", path); | |
2067 | if (read_gitfile(old_git_dir)) | |
2068 | /* If it is an actual gitfile, it doesn't need migration. */ | |
2069 | return; | |
2070 | ||
2071 | real_old_git_dir = real_pathdup(old_git_dir, 1); | |
2072 | ||
2073 | sub = submodule_from_path(the_repository, &null_oid, path); | |
2074 | if (!sub) | |
2075 | die(_("could not lookup name for submodule '%s'"), path); | |
2076 | ||
2077 | new_git_dir = git_pathdup("modules/%s", sub->name); | |
2078 | if (validate_submodule_git_dir(new_git_dir, sub->name) < 0) | |
2079 | die(_("refusing to move '%s' into an existing git dir"), | |
2080 | real_old_git_dir); | |
2081 | if (safe_create_leading_directories_const(new_git_dir) < 0) | |
2082 | die(_("could not create directory '%s'"), new_git_dir); | |
2083 | real_new_git_dir = real_pathdup(new_git_dir, 1); | |
2084 | free(new_git_dir); | |
2085 | ||
2086 | fprintf(stderr, _("Migrating git directory of '%s%s' from\n'%s' to\n'%s'\n"), | |
2087 | get_super_prefix_or_empty(), path, | |
2088 | real_old_git_dir, real_new_git_dir); | |
2089 | ||
2090 | relocate_gitdir(path, real_old_git_dir, real_new_git_dir); | |
2091 | ||
2092 | free(old_git_dir); | |
2093 | free(real_old_git_dir); | |
2094 | free(real_new_git_dir); | |
2095 | } | |
2096 | ||
2097 | /* | |
2098 | * Migrate the git directory of the submodule given by path from | |
2099 | * having its git directory within the working tree to the git dir nested | |
2100 | * in its superprojects git dir under modules/. | |
2101 | */ | |
2102 | void absorb_git_dir_into_superproject(const char *path, | |
2103 | unsigned flags) | |
2104 | { | |
2105 | int err_code; | |
2106 | const char *sub_git_dir; | |
2107 | struct strbuf gitdir = STRBUF_INIT; | |
2108 | strbuf_addf(&gitdir, "%s/.git", path); | |
2109 | sub_git_dir = resolve_gitdir_gently(gitdir.buf, &err_code); | |
2110 | ||
2111 | /* Not populated? */ | |
2112 | if (!sub_git_dir) { | |
2113 | const struct submodule *sub; | |
2114 | ||
2115 | if (err_code == READ_GITFILE_ERR_STAT_FAILED) { | |
2116 | /* unpopulated as expected */ | |
2117 | strbuf_release(&gitdir); | |
2118 | return; | |
2119 | } | |
2120 | ||
2121 | if (err_code != READ_GITFILE_ERR_NOT_A_REPO) | |
2122 | /* We don't know what broke here. */ | |
2123 | read_gitfile_error_die(err_code, path, NULL); | |
2124 | ||
2125 | /* | |
2126 | * Maybe populated, but no git directory was found? | |
2127 | * This can happen if the superproject is a submodule | |
2128 | * itself and was just absorbed. The absorption of the | |
2129 | * superproject did not rewrite the git file links yet, | |
2130 | * fix it now. | |
2131 | */ | |
2132 | sub = submodule_from_path(the_repository, &null_oid, path); | |
2133 | if (!sub) | |
2134 | die(_("could not lookup name for submodule '%s'"), path); | |
2135 | connect_work_tree_and_git_dir(path, | |
2136 | git_path("modules/%s", sub->name), 0); | |
2137 | } else { | |
2138 | /* Is it already absorbed into the superprojects git dir? */ | |
2139 | char *real_sub_git_dir = real_pathdup(sub_git_dir, 1); | |
2140 | char *real_common_git_dir = real_pathdup(get_git_common_dir(), 1); | |
2141 | ||
2142 | if (!starts_with(real_sub_git_dir, real_common_git_dir)) | |
2143 | relocate_single_git_dir_into_superproject(path); | |
2144 | ||
2145 | free(real_sub_git_dir); | |
2146 | free(real_common_git_dir); | |
2147 | } | |
2148 | strbuf_release(&gitdir); | |
2149 | ||
2150 | if (flags & ABSORB_GITDIR_RECURSE_SUBMODULES) { | |
2151 | struct child_process cp = CHILD_PROCESS_INIT; | |
2152 | struct strbuf sb = STRBUF_INIT; | |
2153 | ||
2154 | if (flags & ~ABSORB_GITDIR_RECURSE_SUBMODULES) | |
2155 | BUG("we don't know how to pass the flags down?"); | |
2156 | ||
2157 | strbuf_addstr(&sb, get_super_prefix_or_empty()); | |
2158 | strbuf_addstr(&sb, path); | |
2159 | strbuf_addch(&sb, '/'); | |
2160 | ||
2161 | cp.dir = path; | |
2162 | cp.git_cmd = 1; | |
2163 | cp.no_stdin = 1; | |
2164 | strvec_pushl(&cp.args, "--super-prefix", sb.buf, | |
2165 | "submodule--helper", | |
2166 | "absorb-git-dirs", NULL); | |
2167 | prepare_submodule_repo_env(&cp.env_array); | |
2168 | if (run_command(&cp)) | |
2169 | die(_("could not recurse into submodule '%s'"), path); | |
2170 | ||
2171 | strbuf_release(&sb); | |
2172 | } | |
2173 | } | |
2174 | ||
2175 | int get_superproject_working_tree(struct strbuf *buf) | |
2176 | { | |
2177 | struct child_process cp = CHILD_PROCESS_INIT; | |
2178 | struct strbuf sb = STRBUF_INIT; | |
2179 | struct strbuf one_up = STRBUF_INIT; | |
2180 | const char *cwd = xgetcwd(); | |
2181 | int ret = 0; | |
2182 | const char *subpath; | |
2183 | int code; | |
2184 | ssize_t len; | |
2185 | ||
2186 | if (!is_inside_work_tree()) | |
2187 | /* | |
2188 | * FIXME: | |
2189 | * We might have a superproject, but it is harder | |
2190 | * to determine. | |
2191 | */ | |
2192 | return 0; | |
2193 | ||
2194 | if (!strbuf_realpath(&one_up, "../", 0)) | |
2195 | return 0; | |
2196 | ||
2197 | subpath = relative_path(cwd, one_up.buf, &sb); | |
2198 | strbuf_release(&one_up); | |
2199 | ||
2200 | prepare_submodule_repo_env(&cp.env_array); | |
2201 | strvec_pop(&cp.env_array); | |
2202 | ||
2203 | strvec_pushl(&cp.args, "--literal-pathspecs", "-C", "..", | |
2204 | "ls-files", "-z", "--stage", "--full-name", "--", | |
2205 | subpath, NULL); | |
2206 | strbuf_reset(&sb); | |
2207 | ||
2208 | cp.no_stdin = 1; | |
2209 | cp.no_stderr = 1; | |
2210 | cp.out = -1; | |
2211 | cp.git_cmd = 1; | |
2212 | ||
2213 | if (start_command(&cp)) | |
2214 | die(_("could not start ls-files in ..")); | |
2215 | ||
2216 | len = strbuf_read(&sb, cp.out, PATH_MAX); | |
2217 | close(cp.out); | |
2218 | ||
2219 | if (starts_with(sb.buf, "160000")) { | |
2220 | int super_sub_len; | |
2221 | int cwd_len = strlen(cwd); | |
2222 | char *super_sub, *super_wt; | |
2223 | ||
2224 | /* | |
2225 | * There is a superproject having this repo as a submodule. | |
2226 | * The format is <mode> SP <hash> SP <stage> TAB <full name> \0, | |
2227 | * We're only interested in the name after the tab. | |
2228 | */ | |
2229 | super_sub = strchr(sb.buf, '\t') + 1; | |
2230 | super_sub_len = strlen(super_sub); | |
2231 | ||
2232 | if (super_sub_len > cwd_len || | |
2233 | strcmp(&cwd[cwd_len - super_sub_len], super_sub)) | |
2234 | BUG("returned path string doesn't match cwd?"); | |
2235 | ||
2236 | super_wt = xstrdup(cwd); | |
2237 | super_wt[cwd_len - super_sub_len] = '\0'; | |
2238 | ||
2239 | strbuf_realpath(buf, super_wt, 1); | |
2240 | ret = 1; | |
2241 | free(super_wt); | |
2242 | } | |
2243 | strbuf_release(&sb); | |
2244 | ||
2245 | code = finish_command(&cp); | |
2246 | ||
2247 | if (code == 128) | |
2248 | /* '../' is not a git repository */ | |
2249 | return 0; | |
2250 | if (code == 0 && len == 0) | |
2251 | /* There is an unrelated git repository at '../' */ | |
2252 | return 0; | |
2253 | if (code) | |
2254 | die(_("ls-tree returned unexpected return code %d"), code); | |
2255 | ||
2256 | return ret; | |
2257 | } | |
2258 | ||
2259 | /* | |
2260 | * Put the gitdir for a submodule (given relative to the main | |
2261 | * repository worktree) into `buf`, or return -1 on error. | |
2262 | */ | |
2263 | int submodule_to_gitdir(struct strbuf *buf, const char *submodule) | |
2264 | { | |
2265 | const struct submodule *sub; | |
2266 | const char *git_dir; | |
2267 | int ret = 0; | |
2268 | ||
2269 | strbuf_reset(buf); | |
2270 | strbuf_addstr(buf, submodule); | |
2271 | strbuf_complete(buf, '/'); | |
2272 | strbuf_addstr(buf, ".git"); | |
2273 | ||
2274 | git_dir = read_gitfile(buf->buf); | |
2275 | if (git_dir) { | |
2276 | strbuf_reset(buf); | |
2277 | strbuf_addstr(buf, git_dir); | |
2278 | } | |
2279 | if (!is_git_directory(buf->buf)) { | |
2280 | sub = submodule_from_path(the_repository, &null_oid, submodule); | |
2281 | if (!sub) { | |
2282 | ret = -1; | |
2283 | goto cleanup; | |
2284 | } | |
2285 | strbuf_reset(buf); | |
2286 | strbuf_git_path(buf, "%s/%s", "modules", sub->name); | |
2287 | } | |
2288 | ||
2289 | cleanup: | |
2290 | return ret; | |
2291 | } |