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1 | #define NO_THE_INDEX_COMPATIBILITY_MACROS | |
2 | ||
3 | #include "cache.h" | |
4 | #include "repository.h" | |
5 | #include "config.h" | |
6 | #include "submodule-config.h" | |
7 | #include "submodule.h" | |
8 | #include "dir.h" | |
9 | #include "diff.h" | |
10 | #include "commit.h" | |
11 | #include "revision.h" | |
12 | #include "run-command.h" | |
13 | #include "diffcore.h" | |
14 | #include "refs.h" | |
15 | #include "string-list.h" | |
16 | #include "sha1-array.h" | |
17 | #include "argv-array.h" | |
18 | #include "blob.h" | |
19 | #include "thread-utils.h" | |
20 | #include "quote.h" | |
21 | #include "remote.h" | |
22 | #include "worktree.h" | |
23 | #include "parse-options.h" | |
24 | #include "object-store.h" | |
25 | #include "commit-reach.h" | |
26 | ||
27 | static int config_update_recurse_submodules = RECURSE_SUBMODULES_OFF; | |
28 | static int initialized_fetch_ref_tips; | |
29 | static struct oid_array ref_tips_before_fetch; | |
30 | static struct oid_array ref_tips_after_fetch; | |
31 | ||
32 | /* | |
33 | * Check if the .gitmodules file is unmerged. Parsing of the .gitmodules file | |
34 | * will be disabled because we can't guess what might be configured in | |
35 | * .gitmodules unless the user resolves the conflict. | |
36 | */ | |
37 | int is_gitmodules_unmerged(const struct index_state *istate) | |
38 | { | |
39 | int pos = index_name_pos(istate, GITMODULES_FILE, strlen(GITMODULES_FILE)); | |
40 | if (pos < 0) { /* .gitmodules not found or isn't merged */ | |
41 | pos = -1 - pos; | |
42 | if (istate->cache_nr > pos) { /* there is a .gitmodules */ | |
43 | const struct cache_entry *ce = istate->cache[pos]; | |
44 | if (ce_namelen(ce) == strlen(GITMODULES_FILE) && | |
45 | !strcmp(ce->name, GITMODULES_FILE)) | |
46 | return 1; | |
47 | } | |
48 | } | |
49 | ||
50 | return 0; | |
51 | } | |
52 | ||
53 | /* | |
54 | * Check if the .gitmodules file is safe to write. | |
55 | * | |
56 | * Writing to the .gitmodules file requires that the file exists in the | |
57 | * working tree or, if it doesn't, that a brand new .gitmodules file is going | |
58 | * to be created (i.e. it's neither in the index nor in the current branch). | |
59 | * | |
60 | * It is not safe to write to .gitmodules if it's not in the working tree but | |
61 | * it is in the index or in the current branch, because writing new values | |
62 | * (and staging them) would blindly overwrite ALL the old content. | |
63 | */ | |
64 | int is_writing_gitmodules_ok(void) | |
65 | { | |
66 | struct object_id oid; | |
67 | return file_exists(GITMODULES_FILE) || | |
68 | (get_oid(GITMODULES_INDEX, &oid) < 0 && get_oid(GITMODULES_HEAD, &oid) < 0); | |
69 | } | |
70 | ||
71 | /* | |
72 | * Check if the .gitmodules file has unstaged modifications. This must be | |
73 | * checked before allowing modifications to the .gitmodules file with the | |
74 | * intention to stage them later, because when continuing we would stage the | |
75 | * modifications the user didn't stage herself too. That might change in a | |
76 | * future version when we learn to stage the changes we do ourselves without | |
77 | * staging any previous modifications. | |
78 | */ | |
79 | int is_staging_gitmodules_ok(struct index_state *istate) | |
80 | { | |
81 | int pos = index_name_pos(istate, GITMODULES_FILE, strlen(GITMODULES_FILE)); | |
82 | ||
83 | if ((pos >= 0) && (pos < istate->cache_nr)) { | |
84 | struct stat st; | |
85 | if (lstat(GITMODULES_FILE, &st) == 0 && | |
86 | ie_match_stat(istate, istate->cache[pos], &st, 0) & DATA_CHANGED) | |
87 | return 0; | |
88 | } | |
89 | ||
90 | return 1; | |
91 | } | |
92 | ||
93 | static int for_each_remote_ref_submodule(const char *submodule, | |
94 | each_ref_fn fn, void *cb_data) | |
95 | { | |
96 | return refs_for_each_remote_ref(get_submodule_ref_store(submodule), | |
97 | fn, cb_data); | |
98 | } | |
99 | ||
100 | /* | |
101 | * Try to update the "path" entry in the "submodule.<name>" section of the | |
102 | * .gitmodules file. Return 0 only if a .gitmodules file was found, a section | |
103 | * with the correct path=<oldpath> setting was found and we could update it. | |
104 | */ | |
105 | int update_path_in_gitmodules(const char *oldpath, const char *newpath) | |
106 | { | |
107 | struct strbuf entry = STRBUF_INIT; | |
108 | const struct submodule *submodule; | |
109 | int ret; | |
110 | ||
111 | if (!file_exists(GITMODULES_FILE)) /* Do nothing without .gitmodules */ | |
112 | return -1; | |
113 | ||
114 | if (is_gitmodules_unmerged(the_repository->index)) | |
115 | die(_("Cannot change unmerged .gitmodules, resolve merge conflicts first")); | |
116 | ||
117 | submodule = submodule_from_path(the_repository, &null_oid, oldpath); | |
118 | if (!submodule || !submodule->name) { | |
119 | warning(_("Could not find section in .gitmodules where path=%s"), oldpath); | |
120 | return -1; | |
121 | } | |
122 | strbuf_addstr(&entry, "submodule."); | |
123 | strbuf_addstr(&entry, submodule->name); | |
124 | strbuf_addstr(&entry, ".path"); | |
125 | ret = config_set_in_gitmodules_file_gently(entry.buf, newpath); | |
126 | strbuf_release(&entry); | |
127 | return ret; | |
128 | } | |
129 | ||
130 | /* | |
131 | * Try to remove the "submodule.<name>" section from .gitmodules where the given | |
132 | * path is configured. Return 0 only if a .gitmodules file was found, a section | |
133 | * with the correct path=<path> setting was found and we could remove it. | |
134 | */ | |
135 | int remove_path_from_gitmodules(const char *path) | |
136 | { | |
137 | struct strbuf sect = STRBUF_INIT; | |
138 | const struct submodule *submodule; | |
139 | ||
140 | if (!file_exists(GITMODULES_FILE)) /* Do nothing without .gitmodules */ | |
141 | return -1; | |
142 | ||
143 | if (is_gitmodules_unmerged(the_repository->index)) | |
144 | die(_("Cannot change unmerged .gitmodules, resolve merge conflicts first")); | |
145 | ||
146 | submodule = submodule_from_path(the_repository, &null_oid, path); | |
147 | if (!submodule || !submodule->name) { | |
148 | warning(_("Could not find section in .gitmodules where path=%s"), path); | |
149 | return -1; | |
150 | } | |
151 | strbuf_addstr(§, "submodule."); | |
152 | strbuf_addstr(§, submodule->name); | |
153 | if (git_config_rename_section_in_file(GITMODULES_FILE, sect.buf, NULL) < 0) { | |
154 | /* Maybe the user already did that, don't error out here */ | |
155 | warning(_("Could not remove .gitmodules entry for %s"), path); | |
156 | strbuf_release(§); | |
157 | return -1; | |
158 | } | |
159 | strbuf_release(§); | |
160 | return 0; | |
161 | } | |
162 | ||
163 | void stage_updated_gitmodules(struct index_state *istate) | |
164 | { | |
165 | if (add_file_to_index(istate, GITMODULES_FILE, 0)) | |
166 | die(_("staging updated .gitmodules failed")); | |
167 | } | |
168 | ||
169 | /* TODO: remove this function, use repo_submodule_init instead. */ | |
170 | int add_submodule_odb(const char *path) | |
171 | { | |
172 | struct strbuf objects_directory = STRBUF_INIT; | |
173 | int ret = 0; | |
174 | ||
175 | ret = strbuf_git_path_submodule(&objects_directory, path, "objects/"); | |
176 | if (ret) | |
177 | goto done; | |
178 | if (!is_directory(objects_directory.buf)) { | |
179 | ret = -1; | |
180 | goto done; | |
181 | } | |
182 | add_to_alternates_memory(objects_directory.buf); | |
183 | done: | |
184 | strbuf_release(&objects_directory); | |
185 | return ret; | |
186 | } | |
187 | ||
188 | void set_diffopt_flags_from_submodule_config(struct diff_options *diffopt, | |
189 | const char *path) | |
190 | { | |
191 | const struct submodule *submodule = submodule_from_path(the_repository, | |
192 | &null_oid, path); | |
193 | if (submodule) { | |
194 | const char *ignore; | |
195 | char *key; | |
196 | ||
197 | key = xstrfmt("submodule.%s.ignore", submodule->name); | |
198 | if (repo_config_get_string_const(the_repository, key, &ignore)) | |
199 | ignore = submodule->ignore; | |
200 | free(key); | |
201 | ||
202 | if (ignore) | |
203 | handle_ignore_submodules_arg(diffopt, ignore); | |
204 | else if (is_gitmodules_unmerged(the_repository->index)) | |
205 | diffopt->flags.ignore_submodules = 1; | |
206 | } | |
207 | } | |
208 | ||
209 | /* Cheap function that only determines if we're interested in submodules at all */ | |
210 | int git_default_submodule_config(const char *var, const char *value, void *cb) | |
211 | { | |
212 | if (!strcmp(var, "submodule.recurse")) { | |
213 | int v = git_config_bool(var, value) ? | |
214 | RECURSE_SUBMODULES_ON : RECURSE_SUBMODULES_OFF; | |
215 | config_update_recurse_submodules = v; | |
216 | } | |
217 | return 0; | |
218 | } | |
219 | ||
220 | int option_parse_recurse_submodules_worktree_updater(const struct option *opt, | |
221 | const char *arg, int unset) | |
222 | { | |
223 | if (unset) { | |
224 | config_update_recurse_submodules = RECURSE_SUBMODULES_OFF; | |
225 | return 0; | |
226 | } | |
227 | if (arg) | |
228 | config_update_recurse_submodules = | |
229 | parse_update_recurse_submodules_arg(opt->long_name, | |
230 | arg); | |
231 | else | |
232 | config_update_recurse_submodules = RECURSE_SUBMODULES_ON; | |
233 | ||
234 | return 0; | |
235 | } | |
236 | ||
237 | /* | |
238 | * Determine if a submodule has been initialized at a given 'path' | |
239 | */ | |
240 | int is_submodule_active(struct repository *repo, const char *path) | |
241 | { | |
242 | int ret = 0; | |
243 | char *key = NULL; | |
244 | char *value = NULL; | |
245 | const struct string_list *sl; | |
246 | const struct submodule *module; | |
247 | ||
248 | module = submodule_from_path(repo, &null_oid, path); | |
249 | ||
250 | /* early return if there isn't a path->module mapping */ | |
251 | if (!module) | |
252 | return 0; | |
253 | ||
254 | /* submodule.<name>.active is set */ | |
255 | key = xstrfmt("submodule.%s.active", module->name); | |
256 | if (!repo_config_get_bool(repo, key, &ret)) { | |
257 | free(key); | |
258 | return ret; | |
259 | } | |
260 | free(key); | |
261 | ||
262 | /* submodule.active is set */ | |
263 | sl = repo_config_get_value_multi(repo, "submodule.active"); | |
264 | if (sl) { | |
265 | struct pathspec ps; | |
266 | struct argv_array args = ARGV_ARRAY_INIT; | |
267 | const struct string_list_item *item; | |
268 | ||
269 | for_each_string_list_item(item, sl) { | |
270 | argv_array_push(&args, item->string); | |
271 | } | |
272 | ||
273 | parse_pathspec(&ps, 0, 0, NULL, args.argv); | |
274 | ret = match_pathspec(repo->index, &ps, path, strlen(path), 0, NULL, 1); | |
275 | ||
276 | argv_array_clear(&args); | |
277 | clear_pathspec(&ps); | |
278 | return ret; | |
279 | } | |
280 | ||
281 | /* fallback to checking if the URL is set */ | |
282 | key = xstrfmt("submodule.%s.url", module->name); | |
283 | ret = !repo_config_get_string(repo, key, &value); | |
284 | ||
285 | free(value); | |
286 | free(key); | |
287 | return ret; | |
288 | } | |
289 | ||
290 | int is_submodule_populated_gently(const char *path, int *return_error_code) | |
291 | { | |
292 | int ret = 0; | |
293 | char *gitdir = xstrfmt("%s/.git", path); | |
294 | ||
295 | if (resolve_gitdir_gently(gitdir, return_error_code)) | |
296 | ret = 1; | |
297 | ||
298 | free(gitdir); | |
299 | return ret; | |
300 | } | |
301 | ||
302 | /* | |
303 | * Dies if the provided 'prefix' corresponds to an unpopulated submodule | |
304 | */ | |
305 | void die_in_unpopulated_submodule(const struct index_state *istate, | |
306 | const char *prefix) | |
307 | { | |
308 | int i, prefixlen; | |
309 | ||
310 | if (!prefix) | |
311 | return; | |
312 | ||
313 | prefixlen = strlen(prefix); | |
314 | ||
315 | for (i = 0; i < istate->cache_nr; i++) { | |
316 | struct cache_entry *ce = istate->cache[i]; | |
317 | int ce_len = ce_namelen(ce); | |
318 | ||
319 | if (!S_ISGITLINK(ce->ce_mode)) | |
320 | continue; | |
321 | if (prefixlen <= ce_len) | |
322 | continue; | |
323 | if (strncmp(ce->name, prefix, ce_len)) | |
324 | continue; | |
325 | if (prefix[ce_len] != '/') | |
326 | continue; | |
327 | ||
328 | die(_("in unpopulated submodule '%s'"), ce->name); | |
329 | } | |
330 | } | |
331 | ||
332 | /* | |
333 | * Dies if any paths in the provided pathspec descends into a submodule | |
334 | */ | |
335 | void die_path_inside_submodule(const struct index_state *istate, | |
336 | const struct pathspec *ps) | |
337 | { | |
338 | int i, j; | |
339 | ||
340 | for (i = 0; i < istate->cache_nr; i++) { | |
341 | struct cache_entry *ce = istate->cache[i]; | |
342 | int ce_len = ce_namelen(ce); | |
343 | ||
344 | if (!S_ISGITLINK(ce->ce_mode)) | |
345 | continue; | |
346 | ||
347 | for (j = 0; j < ps->nr ; j++) { | |
348 | const struct pathspec_item *item = &ps->items[j]; | |
349 | ||
350 | if (item->len <= ce_len) | |
351 | continue; | |
352 | if (item->match[ce_len] != '/') | |
353 | continue; | |
354 | if (strncmp(ce->name, item->match, ce_len)) | |
355 | continue; | |
356 | if (item->len == ce_len + 1) | |
357 | continue; | |
358 | ||
359 | die(_("Pathspec '%s' is in submodule '%.*s'"), | |
360 | item->original, ce_len, ce->name); | |
361 | } | |
362 | } | |
363 | } | |
364 | ||
365 | enum submodule_update_type parse_submodule_update_type(const char *value) | |
366 | { | |
367 | if (!strcmp(value, "none")) | |
368 | return SM_UPDATE_NONE; | |
369 | else if (!strcmp(value, "checkout")) | |
370 | return SM_UPDATE_CHECKOUT; | |
371 | else if (!strcmp(value, "rebase")) | |
372 | return SM_UPDATE_REBASE; | |
373 | else if (!strcmp(value, "merge")) | |
374 | return SM_UPDATE_MERGE; | |
375 | else if (*value == '!') | |
376 | return SM_UPDATE_COMMAND; | |
377 | else | |
378 | return SM_UPDATE_UNSPECIFIED; | |
379 | } | |
380 | ||
381 | int parse_submodule_update_strategy(const char *value, | |
382 | struct submodule_update_strategy *dst) | |
383 | { | |
384 | enum submodule_update_type type; | |
385 | ||
386 | free((void*)dst->command); | |
387 | dst->command = NULL; | |
388 | ||
389 | type = parse_submodule_update_type(value); | |
390 | if (type == SM_UPDATE_UNSPECIFIED) | |
391 | return -1; | |
392 | ||
393 | dst->type = type; | |
394 | if (type == SM_UPDATE_COMMAND) | |
395 | dst->command = xstrdup(value + 1); | |
396 | ||
397 | return 0; | |
398 | } | |
399 | ||
400 | const char *submodule_strategy_to_string(const struct submodule_update_strategy *s) | |
401 | { | |
402 | struct strbuf sb = STRBUF_INIT; | |
403 | switch (s->type) { | |
404 | case SM_UPDATE_CHECKOUT: | |
405 | return "checkout"; | |
406 | case SM_UPDATE_MERGE: | |
407 | return "merge"; | |
408 | case SM_UPDATE_REBASE: | |
409 | return "rebase"; | |
410 | case SM_UPDATE_NONE: | |
411 | return "none"; | |
412 | case SM_UPDATE_UNSPECIFIED: | |
413 | return NULL; | |
414 | case SM_UPDATE_COMMAND: | |
415 | strbuf_addf(&sb, "!%s", s->command); | |
416 | return strbuf_detach(&sb, NULL); | |
417 | } | |
418 | return NULL; | |
419 | } | |
420 | ||
421 | void handle_ignore_submodules_arg(struct diff_options *diffopt, | |
422 | const char *arg) | |
423 | { | |
424 | diffopt->flags.ignore_submodules = 0; | |
425 | diffopt->flags.ignore_untracked_in_submodules = 0; | |
426 | diffopt->flags.ignore_dirty_submodules = 0; | |
427 | ||
428 | if (!strcmp(arg, "all")) | |
429 | diffopt->flags.ignore_submodules = 1; | |
430 | else if (!strcmp(arg, "untracked")) | |
431 | diffopt->flags.ignore_untracked_in_submodules = 1; | |
432 | else if (!strcmp(arg, "dirty")) | |
433 | diffopt->flags.ignore_dirty_submodules = 1; | |
434 | else if (strcmp(arg, "none")) | |
435 | die("bad --ignore-submodules argument: %s", arg); | |
436 | } | |
437 | ||
438 | static int prepare_submodule_summary(struct rev_info *rev, const char *path, | |
439 | struct commit *left, struct commit *right, | |
440 | struct commit_list *merge_bases) | |
441 | { | |
442 | struct commit_list *list; | |
443 | ||
444 | repo_init_revisions(the_repository, rev, NULL); | |
445 | setup_revisions(0, NULL, rev, NULL); | |
446 | rev->left_right = 1; | |
447 | rev->first_parent_only = 1; | |
448 | left->object.flags |= SYMMETRIC_LEFT; | |
449 | add_pending_object(rev, &left->object, path); | |
450 | add_pending_object(rev, &right->object, path); | |
451 | for (list = merge_bases; list; list = list->next) { | |
452 | list->item->object.flags |= UNINTERESTING; | |
453 | add_pending_object(rev, &list->item->object, | |
454 | oid_to_hex(&list->item->object.oid)); | |
455 | } | |
456 | return prepare_revision_walk(rev); | |
457 | } | |
458 | ||
459 | static void print_submodule_summary(struct rev_info *rev, struct diff_options *o) | |
460 | { | |
461 | static const char format[] = " %m %s"; | |
462 | struct strbuf sb = STRBUF_INIT; | |
463 | struct commit *commit; | |
464 | ||
465 | while ((commit = get_revision(rev))) { | |
466 | struct pretty_print_context ctx = {0}; | |
467 | ctx.date_mode = rev->date_mode; | |
468 | ctx.output_encoding = get_log_output_encoding(); | |
469 | strbuf_setlen(&sb, 0); | |
470 | format_commit_message(commit, format, &sb, &ctx); | |
471 | strbuf_addch(&sb, '\n'); | |
472 | if (commit->object.flags & SYMMETRIC_LEFT) | |
473 | diff_emit_submodule_del(o, sb.buf); | |
474 | else | |
475 | diff_emit_submodule_add(o, sb.buf); | |
476 | } | |
477 | strbuf_release(&sb); | |
478 | } | |
479 | ||
480 | static void prepare_submodule_repo_env_no_git_dir(struct argv_array *out) | |
481 | { | |
482 | const char * const *var; | |
483 | ||
484 | for (var = local_repo_env; *var; var++) { | |
485 | if (strcmp(*var, CONFIG_DATA_ENVIRONMENT)) | |
486 | argv_array_push(out, *var); | |
487 | } | |
488 | } | |
489 | ||
490 | void prepare_submodule_repo_env(struct argv_array *out) | |
491 | { | |
492 | prepare_submodule_repo_env_no_git_dir(out); | |
493 | argv_array_pushf(out, "%s=%s", GIT_DIR_ENVIRONMENT, | |
494 | DEFAULT_GIT_DIR_ENVIRONMENT); | |
495 | } | |
496 | ||
497 | static void prepare_submodule_repo_env_in_gitdir(struct argv_array *out) | |
498 | { | |
499 | prepare_submodule_repo_env_no_git_dir(out); | |
500 | argv_array_pushf(out, "%s=.", GIT_DIR_ENVIRONMENT); | |
501 | } | |
502 | ||
503 | /* Helper function to display the submodule header line prior to the full | |
504 | * summary output. If it can locate the submodule objects directory it will | |
505 | * attempt to lookup both the left and right commits and put them into the | |
506 | * left and right pointers. | |
507 | */ | |
508 | static void show_submodule_header(struct diff_options *o, const char *path, | |
509 | struct object_id *one, struct object_id *two, | |
510 | unsigned dirty_submodule, | |
511 | struct commit **left, struct commit **right, | |
512 | struct commit_list **merge_bases) | |
513 | { | |
514 | const char *message = NULL; | |
515 | struct strbuf sb = STRBUF_INIT; | |
516 | int fast_forward = 0, fast_backward = 0; | |
517 | ||
518 | if (dirty_submodule & DIRTY_SUBMODULE_UNTRACKED) | |
519 | diff_emit_submodule_untracked(o, path); | |
520 | ||
521 | if (dirty_submodule & DIRTY_SUBMODULE_MODIFIED) | |
522 | diff_emit_submodule_modified(o, path); | |
523 | ||
524 | if (is_null_oid(one)) | |
525 | message = "(new submodule)"; | |
526 | else if (is_null_oid(two)) | |
527 | message = "(submodule deleted)"; | |
528 | ||
529 | if (add_submodule_odb(path)) { | |
530 | if (!message) | |
531 | message = "(commits not present)"; | |
532 | goto output_header; | |
533 | } | |
534 | ||
535 | /* | |
536 | * Attempt to lookup the commit references, and determine if this is | |
537 | * a fast forward or fast backwards update. | |
538 | */ | |
539 | *left = lookup_commit_reference(the_repository, one); | |
540 | *right = lookup_commit_reference(the_repository, two); | |
541 | ||
542 | /* | |
543 | * Warn about missing commits in the submodule project, but only if | |
544 | * they aren't null. | |
545 | */ | |
546 | if ((!is_null_oid(one) && !*left) || | |
547 | (!is_null_oid(two) && !*right)) | |
548 | message = "(commits not present)"; | |
549 | ||
550 | *merge_bases = get_merge_bases(*left, *right); | |
551 | if (*merge_bases) { | |
552 | if ((*merge_bases)->item == *left) | |
553 | fast_forward = 1; | |
554 | else if ((*merge_bases)->item == *right) | |
555 | fast_backward = 1; | |
556 | } | |
557 | ||
558 | if (oideq(one, two)) { | |
559 | strbuf_release(&sb); | |
560 | return; | |
561 | } | |
562 | ||
563 | output_header: | |
564 | strbuf_addf(&sb, "Submodule %s ", path); | |
565 | strbuf_add_unique_abbrev(&sb, one, DEFAULT_ABBREV); | |
566 | strbuf_addstr(&sb, (fast_backward || fast_forward) ? ".." : "..."); | |
567 | strbuf_add_unique_abbrev(&sb, two, DEFAULT_ABBREV); | |
568 | if (message) | |
569 | strbuf_addf(&sb, " %s\n", message); | |
570 | else | |
571 | strbuf_addf(&sb, "%s:\n", fast_backward ? " (rewind)" : ""); | |
572 | diff_emit_submodule_header(o, sb.buf); | |
573 | ||
574 | strbuf_release(&sb); | |
575 | } | |
576 | ||
577 | void show_submodule_summary(struct diff_options *o, const char *path, | |
578 | struct object_id *one, struct object_id *two, | |
579 | unsigned dirty_submodule) | |
580 | { | |
581 | struct rev_info rev; | |
582 | struct commit *left = NULL, *right = NULL; | |
583 | struct commit_list *merge_bases = NULL; | |
584 | ||
585 | show_submodule_header(o, path, one, two, dirty_submodule, | |
586 | &left, &right, &merge_bases); | |
587 | ||
588 | /* | |
589 | * If we don't have both a left and a right pointer, there is no | |
590 | * reason to try and display a summary. The header line should contain | |
591 | * all the information the user needs. | |
592 | */ | |
593 | if (!left || !right) | |
594 | goto out; | |
595 | ||
596 | /* Treat revision walker failure the same as missing commits */ | |
597 | if (prepare_submodule_summary(&rev, path, left, right, merge_bases)) { | |
598 | diff_emit_submodule_error(o, "(revision walker failed)\n"); | |
599 | goto out; | |
600 | } | |
601 | ||
602 | print_submodule_summary(&rev, o); | |
603 | ||
604 | out: | |
605 | if (merge_bases) | |
606 | free_commit_list(merge_bases); | |
607 | clear_commit_marks(left, ~0); | |
608 | clear_commit_marks(right, ~0); | |
609 | } | |
610 | ||
611 | void show_submodule_inline_diff(struct diff_options *o, const char *path, | |
612 | struct object_id *one, struct object_id *two, | |
613 | unsigned dirty_submodule) | |
614 | { | |
615 | const struct object_id *old_oid = the_hash_algo->empty_tree, *new_oid = the_hash_algo->empty_tree; | |
616 | struct commit *left = NULL, *right = NULL; | |
617 | struct commit_list *merge_bases = NULL; | |
618 | struct child_process cp = CHILD_PROCESS_INIT; | |
619 | struct strbuf sb = STRBUF_INIT; | |
620 | ||
621 | show_submodule_header(o, path, one, two, dirty_submodule, | |
622 | &left, &right, &merge_bases); | |
623 | ||
624 | /* We need a valid left and right commit to display a difference */ | |
625 | if (!(left || is_null_oid(one)) || | |
626 | !(right || is_null_oid(two))) | |
627 | goto done; | |
628 | ||
629 | if (left) | |
630 | old_oid = one; | |
631 | if (right) | |
632 | new_oid = two; | |
633 | ||
634 | cp.git_cmd = 1; | |
635 | cp.dir = path; | |
636 | cp.out = -1; | |
637 | cp.no_stdin = 1; | |
638 | ||
639 | /* TODO: other options may need to be passed here. */ | |
640 | argv_array_pushl(&cp.args, "diff", "--submodule=diff", NULL); | |
641 | argv_array_pushf(&cp.args, "--color=%s", want_color(o->use_color) ? | |
642 | "always" : "never"); | |
643 | ||
644 | if (o->flags.reverse_diff) { | |
645 | argv_array_pushf(&cp.args, "--src-prefix=%s%s/", | |
646 | o->b_prefix, path); | |
647 | argv_array_pushf(&cp.args, "--dst-prefix=%s%s/", | |
648 | o->a_prefix, path); | |
649 | } else { | |
650 | argv_array_pushf(&cp.args, "--src-prefix=%s%s/", | |
651 | o->a_prefix, path); | |
652 | argv_array_pushf(&cp.args, "--dst-prefix=%s%s/", | |
653 | o->b_prefix, path); | |
654 | } | |
655 | argv_array_push(&cp.args, oid_to_hex(old_oid)); | |
656 | /* | |
657 | * If the submodule has modified content, we will diff against the | |
658 | * work tree, under the assumption that the user has asked for the | |
659 | * diff format and wishes to actually see all differences even if they | |
660 | * haven't yet been committed to the submodule yet. | |
661 | */ | |
662 | if (!(dirty_submodule & DIRTY_SUBMODULE_MODIFIED)) | |
663 | argv_array_push(&cp.args, oid_to_hex(new_oid)); | |
664 | ||
665 | prepare_submodule_repo_env(&cp.env_array); | |
666 | if (start_command(&cp)) | |
667 | diff_emit_submodule_error(o, "(diff failed)\n"); | |
668 | ||
669 | while (strbuf_getwholeline_fd(&sb, cp.out, '\n') != EOF) | |
670 | diff_emit_submodule_pipethrough(o, sb.buf, sb.len); | |
671 | ||
672 | if (finish_command(&cp)) | |
673 | diff_emit_submodule_error(o, "(diff failed)\n"); | |
674 | ||
675 | done: | |
676 | strbuf_release(&sb); | |
677 | if (merge_bases) | |
678 | free_commit_list(merge_bases); | |
679 | if (left) | |
680 | clear_commit_marks(left, ~0); | |
681 | if (right) | |
682 | clear_commit_marks(right, ~0); | |
683 | } | |
684 | ||
685 | int should_update_submodules(void) | |
686 | { | |
687 | return config_update_recurse_submodules == RECURSE_SUBMODULES_ON; | |
688 | } | |
689 | ||
690 | const struct submodule *submodule_from_ce(const struct cache_entry *ce) | |
691 | { | |
692 | if (!S_ISGITLINK(ce->ce_mode)) | |
693 | return NULL; | |
694 | ||
695 | if (!should_update_submodules()) | |
696 | return NULL; | |
697 | ||
698 | return submodule_from_path(the_repository, &null_oid, ce->name); | |
699 | } | |
700 | ||
701 | static struct oid_array *submodule_commits(struct string_list *submodules, | |
702 | const char *name) | |
703 | { | |
704 | struct string_list_item *item; | |
705 | ||
706 | item = string_list_insert(submodules, name); | |
707 | if (item->util) | |
708 | return (struct oid_array *) item->util; | |
709 | ||
710 | /* NEEDSWORK: should we have oid_array_init()? */ | |
711 | item->util = xcalloc(1, sizeof(struct oid_array)); | |
712 | return (struct oid_array *) item->util; | |
713 | } | |
714 | ||
715 | struct collect_changed_submodules_cb_data { | |
716 | struct repository *repo; | |
717 | struct string_list *changed; | |
718 | const struct object_id *commit_oid; | |
719 | }; | |
720 | ||
721 | /* | |
722 | * this would normally be two functions: default_name_from_path() and | |
723 | * path_from_default_name(). Since the default name is the same as | |
724 | * the submodule path we can get away with just one function which only | |
725 | * checks whether there is a submodule in the working directory at that | |
726 | * location. | |
727 | */ | |
728 | static const char *default_name_or_path(const char *path_or_name) | |
729 | { | |
730 | int error_code; | |
731 | ||
732 | if (!is_submodule_populated_gently(path_or_name, &error_code)) | |
733 | return NULL; | |
734 | ||
735 | return path_or_name; | |
736 | } | |
737 | ||
738 | static void collect_changed_submodules_cb(struct diff_queue_struct *q, | |
739 | struct diff_options *options, | |
740 | void *data) | |
741 | { | |
742 | struct collect_changed_submodules_cb_data *me = data; | |
743 | struct string_list *changed = me->changed; | |
744 | const struct object_id *commit_oid = me->commit_oid; | |
745 | int i; | |
746 | ||
747 | for (i = 0; i < q->nr; i++) { | |
748 | struct diff_filepair *p = q->queue[i]; | |
749 | struct oid_array *commits; | |
750 | const struct submodule *submodule; | |
751 | const char *name; | |
752 | ||
753 | if (!S_ISGITLINK(p->two->mode)) | |
754 | continue; | |
755 | ||
756 | submodule = submodule_from_path(me->repo, | |
757 | commit_oid, p->two->path); | |
758 | if (submodule) | |
759 | name = submodule->name; | |
760 | else { | |
761 | name = default_name_or_path(p->two->path); | |
762 | /* make sure name does not collide with existing one */ | |
763 | if (name) | |
764 | submodule = submodule_from_name(me->repo, | |
765 | commit_oid, name); | |
766 | if (submodule) { | |
767 | warning("Submodule in commit %s at path: " | |
768 | "'%s' collides with a submodule named " | |
769 | "the same. Skipping it.", | |
770 | oid_to_hex(commit_oid), p->two->path); | |
771 | name = NULL; | |
772 | } | |
773 | } | |
774 | ||
775 | if (!name) | |
776 | continue; | |
777 | ||
778 | commits = submodule_commits(changed, name); | |
779 | oid_array_append(commits, &p->two->oid); | |
780 | } | |
781 | } | |
782 | ||
783 | /* | |
784 | * Collect the paths of submodules in 'changed' which have changed based on | |
785 | * the revisions as specified in 'argv'. Each entry in 'changed' will also | |
786 | * have a corresponding 'struct oid_array' (in the 'util' field) which lists | |
787 | * what the submodule pointers were updated to during the change. | |
788 | */ | |
789 | static void collect_changed_submodules(struct repository *r, | |
790 | struct string_list *changed, | |
791 | struct argv_array *argv) | |
792 | { | |
793 | struct rev_info rev; | |
794 | const struct commit *commit; | |
795 | ||
796 | repo_init_revisions(r, &rev, NULL); | |
797 | setup_revisions(argv->argc, argv->argv, &rev, NULL); | |
798 | if (prepare_revision_walk(&rev)) | |
799 | die("revision walk setup failed"); | |
800 | ||
801 | while ((commit = get_revision(&rev))) { | |
802 | struct rev_info diff_rev; | |
803 | struct collect_changed_submodules_cb_data data; | |
804 | data.repo = r; | |
805 | data.changed = changed; | |
806 | data.commit_oid = &commit->object.oid; | |
807 | ||
808 | repo_init_revisions(r, &diff_rev, NULL); | |
809 | diff_rev.diffopt.output_format |= DIFF_FORMAT_CALLBACK; | |
810 | diff_rev.diffopt.format_callback = collect_changed_submodules_cb; | |
811 | diff_rev.diffopt.format_callback_data = &data; | |
812 | diff_tree_combined_merge(commit, 1, &diff_rev); | |
813 | } | |
814 | ||
815 | reset_revision_walk(); | |
816 | } | |
817 | ||
818 | static void free_submodules_oids(struct string_list *submodules) | |
819 | { | |
820 | struct string_list_item *item; | |
821 | for_each_string_list_item(item, submodules) | |
822 | oid_array_clear((struct oid_array *) item->util); | |
823 | string_list_clear(submodules, 1); | |
824 | } | |
825 | ||
826 | static int has_remote(const char *refname, const struct object_id *oid, | |
827 | int flags, void *cb_data) | |
828 | { | |
829 | return 1; | |
830 | } | |
831 | ||
832 | static int append_oid_to_argv(const struct object_id *oid, void *data) | |
833 | { | |
834 | struct argv_array *argv = data; | |
835 | argv_array_push(argv, oid_to_hex(oid)); | |
836 | return 0; | |
837 | } | |
838 | ||
839 | struct has_commit_data { | |
840 | struct repository *repo; | |
841 | int result; | |
842 | const char *path; | |
843 | }; | |
844 | ||
845 | static int check_has_commit(const struct object_id *oid, void *data) | |
846 | { | |
847 | struct has_commit_data *cb = data; | |
848 | ||
849 | enum object_type type = oid_object_info(cb->repo, oid, NULL); | |
850 | ||
851 | switch (type) { | |
852 | case OBJ_COMMIT: | |
853 | return 0; | |
854 | case OBJ_BAD: | |
855 | /* | |
856 | * Object is missing or invalid. If invalid, an error message | |
857 | * has already been printed. | |
858 | */ | |
859 | cb->result = 0; | |
860 | return 0; | |
861 | default: | |
862 | die(_("submodule entry '%s' (%s) is a %s, not a commit"), | |
863 | cb->path, oid_to_hex(oid), type_name(type)); | |
864 | } | |
865 | } | |
866 | ||
867 | static int submodule_has_commits(struct repository *r, | |
868 | const char *path, | |
869 | struct oid_array *commits) | |
870 | { | |
871 | struct has_commit_data has_commit = { r, 1, path }; | |
872 | ||
873 | /* | |
874 | * Perform a cheap, but incorrect check for the existence of 'commits'. | |
875 | * This is done by adding the submodule's object store to the in-core | |
876 | * object store, and then querying for each commit's existence. If we | |
877 | * do not have the commit object anywhere, there is no chance we have | |
878 | * it in the object store of the correct submodule and have it | |
879 | * reachable from a ref, so we can fail early without spawning rev-list | |
880 | * which is expensive. | |
881 | */ | |
882 | if (add_submodule_odb(path)) | |
883 | return 0; | |
884 | ||
885 | oid_array_for_each_unique(commits, check_has_commit, &has_commit); | |
886 | ||
887 | if (has_commit.result) { | |
888 | /* | |
889 | * Even if the submodule is checked out and the commit is | |
890 | * present, make sure it exists in the submodule's object store | |
891 | * and that it is reachable from a ref. | |
892 | */ | |
893 | struct child_process cp = CHILD_PROCESS_INIT; | |
894 | struct strbuf out = STRBUF_INIT; | |
895 | ||
896 | argv_array_pushl(&cp.args, "rev-list", "-n", "1", NULL); | |
897 | oid_array_for_each_unique(commits, append_oid_to_argv, &cp.args); | |
898 | argv_array_pushl(&cp.args, "--not", "--all", NULL); | |
899 | ||
900 | prepare_submodule_repo_env(&cp.env_array); | |
901 | cp.git_cmd = 1; | |
902 | cp.no_stdin = 1; | |
903 | cp.dir = path; | |
904 | ||
905 | if (capture_command(&cp, &out, GIT_MAX_HEXSZ + 1) || out.len) | |
906 | has_commit.result = 0; | |
907 | ||
908 | strbuf_release(&out); | |
909 | } | |
910 | ||
911 | return has_commit.result; | |
912 | } | |
913 | ||
914 | static int submodule_needs_pushing(struct repository *r, | |
915 | const char *path, | |
916 | struct oid_array *commits) | |
917 | { | |
918 | if (!submodule_has_commits(r, path, commits)) | |
919 | /* | |
920 | * NOTE: We do consider it safe to return "no" here. The | |
921 | * correct answer would be "We do not know" instead of | |
922 | * "No push needed", but it is quite hard to change | |
923 | * the submodule pointer without having the submodule | |
924 | * around. If a user did however change the submodules | |
925 | * without having the submodule around, this indicates | |
926 | * an expert who knows what they are doing or a | |
927 | * maintainer integrating work from other people. In | |
928 | * both cases it should be safe to skip this check. | |
929 | */ | |
930 | return 0; | |
931 | ||
932 | if (for_each_remote_ref_submodule(path, has_remote, NULL) > 0) { | |
933 | struct child_process cp = CHILD_PROCESS_INIT; | |
934 | struct strbuf buf = STRBUF_INIT; | |
935 | int needs_pushing = 0; | |
936 | ||
937 | argv_array_push(&cp.args, "rev-list"); | |
938 | oid_array_for_each_unique(commits, append_oid_to_argv, &cp.args); | |
939 | argv_array_pushl(&cp.args, "--not", "--remotes", "-n", "1" , NULL); | |
940 | ||
941 | prepare_submodule_repo_env(&cp.env_array); | |
942 | cp.git_cmd = 1; | |
943 | cp.no_stdin = 1; | |
944 | cp.out = -1; | |
945 | cp.dir = path; | |
946 | if (start_command(&cp)) | |
947 | die("Could not run 'git rev-list <commits> --not --remotes -n 1' command in submodule %s", | |
948 | path); | |
949 | if (strbuf_read(&buf, cp.out, 41)) | |
950 | needs_pushing = 1; | |
951 | finish_command(&cp); | |
952 | close(cp.out); | |
953 | strbuf_release(&buf); | |
954 | return needs_pushing; | |
955 | } | |
956 | ||
957 | return 0; | |
958 | } | |
959 | ||
960 | int find_unpushed_submodules(struct repository *r, | |
961 | struct oid_array *commits, | |
962 | const char *remotes_name, | |
963 | struct string_list *needs_pushing) | |
964 | { | |
965 | struct string_list submodules = STRING_LIST_INIT_DUP; | |
966 | struct string_list_item *name; | |
967 | struct argv_array argv = ARGV_ARRAY_INIT; | |
968 | ||
969 | /* argv.argv[0] will be ignored by setup_revisions */ | |
970 | argv_array_push(&argv, "find_unpushed_submodules"); | |
971 | oid_array_for_each_unique(commits, append_oid_to_argv, &argv); | |
972 | argv_array_push(&argv, "--not"); | |
973 | argv_array_pushf(&argv, "--remotes=%s", remotes_name); | |
974 | ||
975 | collect_changed_submodules(r, &submodules, &argv); | |
976 | ||
977 | for_each_string_list_item(name, &submodules) { | |
978 | struct oid_array *commits = name->util; | |
979 | const struct submodule *submodule; | |
980 | const char *path = NULL; | |
981 | ||
982 | submodule = submodule_from_name(r, &null_oid, name->string); | |
983 | if (submodule) | |
984 | path = submodule->path; | |
985 | else | |
986 | path = default_name_or_path(name->string); | |
987 | ||
988 | if (!path) | |
989 | continue; | |
990 | ||
991 | if (submodule_needs_pushing(r, path, commits)) | |
992 | string_list_insert(needs_pushing, path); | |
993 | } | |
994 | ||
995 | free_submodules_oids(&submodules); | |
996 | argv_array_clear(&argv); | |
997 | ||
998 | return needs_pushing->nr; | |
999 | } | |
1000 | ||
1001 | static int push_submodule(const char *path, | |
1002 | const struct remote *remote, | |
1003 | const struct refspec *rs, | |
1004 | const struct string_list *push_options, | |
1005 | int dry_run) | |
1006 | { | |
1007 | if (add_submodule_odb(path)) | |
1008 | return 1; | |
1009 | ||
1010 | if (for_each_remote_ref_submodule(path, has_remote, NULL) > 0) { | |
1011 | struct child_process cp = CHILD_PROCESS_INIT; | |
1012 | argv_array_push(&cp.args, "push"); | |
1013 | if (dry_run) | |
1014 | argv_array_push(&cp.args, "--dry-run"); | |
1015 | ||
1016 | if (push_options && push_options->nr) { | |
1017 | const struct string_list_item *item; | |
1018 | for_each_string_list_item(item, push_options) | |
1019 | argv_array_pushf(&cp.args, "--push-option=%s", | |
1020 | item->string); | |
1021 | } | |
1022 | ||
1023 | if (remote->origin != REMOTE_UNCONFIGURED) { | |
1024 | int i; | |
1025 | argv_array_push(&cp.args, remote->name); | |
1026 | for (i = 0; i < rs->raw_nr; i++) | |
1027 | argv_array_push(&cp.args, rs->raw[i]); | |
1028 | } | |
1029 | ||
1030 | prepare_submodule_repo_env(&cp.env_array); | |
1031 | cp.git_cmd = 1; | |
1032 | cp.no_stdin = 1; | |
1033 | cp.dir = path; | |
1034 | if (run_command(&cp)) | |
1035 | return 0; | |
1036 | close(cp.out); | |
1037 | } | |
1038 | ||
1039 | return 1; | |
1040 | } | |
1041 | ||
1042 | /* | |
1043 | * Perform a check in the submodule to see if the remote and refspec work. | |
1044 | * Die if the submodule can't be pushed. | |
1045 | */ | |
1046 | static void submodule_push_check(const char *path, const char *head, | |
1047 | const struct remote *remote, | |
1048 | const struct refspec *rs) | |
1049 | { | |
1050 | struct child_process cp = CHILD_PROCESS_INIT; | |
1051 | int i; | |
1052 | ||
1053 | argv_array_push(&cp.args, "submodule--helper"); | |
1054 | argv_array_push(&cp.args, "push-check"); | |
1055 | argv_array_push(&cp.args, head); | |
1056 | argv_array_push(&cp.args, remote->name); | |
1057 | ||
1058 | for (i = 0; i < rs->raw_nr; i++) | |
1059 | argv_array_push(&cp.args, rs->raw[i]); | |
1060 | ||
1061 | prepare_submodule_repo_env(&cp.env_array); | |
1062 | cp.git_cmd = 1; | |
1063 | cp.no_stdin = 1; | |
1064 | cp.no_stdout = 1; | |
1065 | cp.dir = path; | |
1066 | ||
1067 | /* | |
1068 | * Simply indicate if 'submodule--helper push-check' failed. | |
1069 | * More detailed error information will be provided by the | |
1070 | * child process. | |
1071 | */ | |
1072 | if (run_command(&cp)) | |
1073 | die("process for submodule '%s' failed", path); | |
1074 | } | |
1075 | ||
1076 | int push_unpushed_submodules(struct repository *r, | |
1077 | struct oid_array *commits, | |
1078 | const struct remote *remote, | |
1079 | const struct refspec *rs, | |
1080 | const struct string_list *push_options, | |
1081 | int dry_run) | |
1082 | { | |
1083 | int i, ret = 1; | |
1084 | struct string_list needs_pushing = STRING_LIST_INIT_DUP; | |
1085 | ||
1086 | if (!find_unpushed_submodules(r, commits, | |
1087 | remote->name, &needs_pushing)) | |
1088 | return 1; | |
1089 | ||
1090 | /* | |
1091 | * Verify that the remote and refspec can be propagated to all | |
1092 | * submodules. This check can be skipped if the remote and refspec | |
1093 | * won't be propagated due to the remote being unconfigured (e.g. a URL | |
1094 | * instead of a remote name). | |
1095 | */ | |
1096 | if (remote->origin != REMOTE_UNCONFIGURED) { | |
1097 | char *head; | |
1098 | struct object_id head_oid; | |
1099 | ||
1100 | head = resolve_refdup("HEAD", 0, &head_oid, NULL); | |
1101 | if (!head) | |
1102 | die(_("Failed to resolve HEAD as a valid ref.")); | |
1103 | ||
1104 | for (i = 0; i < needs_pushing.nr; i++) | |
1105 | submodule_push_check(needs_pushing.items[i].string, | |
1106 | head, remote, rs); | |
1107 | free(head); | |
1108 | } | |
1109 | ||
1110 | /* Actually push the submodules */ | |
1111 | for (i = 0; i < needs_pushing.nr; i++) { | |
1112 | const char *path = needs_pushing.items[i].string; | |
1113 | fprintf(stderr, "Pushing submodule '%s'\n", path); | |
1114 | if (!push_submodule(path, remote, rs, | |
1115 | push_options, dry_run)) { | |
1116 | fprintf(stderr, "Unable to push submodule '%s'\n", path); | |
1117 | ret = 0; | |
1118 | } | |
1119 | } | |
1120 | ||
1121 | string_list_clear(&needs_pushing, 0); | |
1122 | ||
1123 | return ret; | |
1124 | } | |
1125 | ||
1126 | static int append_oid_to_array(const char *ref, const struct object_id *oid, | |
1127 | int flags, void *data) | |
1128 | { | |
1129 | struct oid_array *array = data; | |
1130 | oid_array_append(array, oid); | |
1131 | return 0; | |
1132 | } | |
1133 | ||
1134 | void check_for_new_submodule_commits(struct object_id *oid) | |
1135 | { | |
1136 | if (!initialized_fetch_ref_tips) { | |
1137 | for_each_ref(append_oid_to_array, &ref_tips_before_fetch); | |
1138 | initialized_fetch_ref_tips = 1; | |
1139 | } | |
1140 | ||
1141 | oid_array_append(&ref_tips_after_fetch, oid); | |
1142 | } | |
1143 | ||
1144 | static void calculate_changed_submodule_paths(struct repository *r, | |
1145 | struct string_list *changed_submodule_names) | |
1146 | { | |
1147 | struct argv_array argv = ARGV_ARRAY_INIT; | |
1148 | struct string_list_item *name; | |
1149 | ||
1150 | /* No need to check if there are no submodules configured */ | |
1151 | if (!submodule_from_path(r, NULL, NULL)) | |
1152 | return; | |
1153 | ||
1154 | argv_array_push(&argv, "--"); /* argv[0] program name */ | |
1155 | oid_array_for_each_unique(&ref_tips_after_fetch, | |
1156 | append_oid_to_argv, &argv); | |
1157 | argv_array_push(&argv, "--not"); | |
1158 | oid_array_for_each_unique(&ref_tips_before_fetch, | |
1159 | append_oid_to_argv, &argv); | |
1160 | ||
1161 | /* | |
1162 | * Collect all submodules (whether checked out or not) for which new | |
1163 | * commits have been recorded upstream in "changed_submodule_names". | |
1164 | */ | |
1165 | collect_changed_submodules(r, changed_submodule_names, &argv); | |
1166 | ||
1167 | for_each_string_list_item(name, changed_submodule_names) { | |
1168 | struct oid_array *commits = name->util; | |
1169 | const struct submodule *submodule; | |
1170 | const char *path = NULL; | |
1171 | ||
1172 | submodule = submodule_from_name(r, &null_oid, name->string); | |
1173 | if (submodule) | |
1174 | path = submodule->path; | |
1175 | else | |
1176 | path = default_name_or_path(name->string); | |
1177 | ||
1178 | if (!path) | |
1179 | continue; | |
1180 | ||
1181 | if (submodule_has_commits(r, path, commits)) { | |
1182 | oid_array_clear(commits); | |
1183 | *name->string = '\0'; | |
1184 | } | |
1185 | } | |
1186 | ||
1187 | string_list_remove_empty_items(changed_submodule_names, 1); | |
1188 | ||
1189 | argv_array_clear(&argv); | |
1190 | oid_array_clear(&ref_tips_before_fetch); | |
1191 | oid_array_clear(&ref_tips_after_fetch); | |
1192 | initialized_fetch_ref_tips = 0; | |
1193 | } | |
1194 | ||
1195 | int submodule_touches_in_range(struct repository *r, | |
1196 | struct object_id *excl_oid, | |
1197 | struct object_id *incl_oid) | |
1198 | { | |
1199 | struct string_list subs = STRING_LIST_INIT_DUP; | |
1200 | struct argv_array args = ARGV_ARRAY_INIT; | |
1201 | int ret; | |
1202 | ||
1203 | /* No need to check if there are no submodules configured */ | |
1204 | if (!submodule_from_path(r, NULL, NULL)) | |
1205 | return 0; | |
1206 | ||
1207 | argv_array_push(&args, "--"); /* args[0] program name */ | |
1208 | argv_array_push(&args, oid_to_hex(incl_oid)); | |
1209 | if (!is_null_oid(excl_oid)) { | |
1210 | argv_array_push(&args, "--not"); | |
1211 | argv_array_push(&args, oid_to_hex(excl_oid)); | |
1212 | } | |
1213 | ||
1214 | collect_changed_submodules(r, &subs, &args); | |
1215 | ret = subs.nr; | |
1216 | ||
1217 | argv_array_clear(&args); | |
1218 | ||
1219 | free_submodules_oids(&subs); | |
1220 | return ret; | |
1221 | } | |
1222 | ||
1223 | struct submodule_parallel_fetch { | |
1224 | int count; | |
1225 | struct argv_array args; | |
1226 | struct repository *r; | |
1227 | const char *prefix; | |
1228 | int command_line_option; | |
1229 | int default_option; | |
1230 | int quiet; | |
1231 | int result; | |
1232 | ||
1233 | struct string_list changed_submodule_names; | |
1234 | }; | |
1235 | #define SPF_INIT {0, ARGV_ARRAY_INIT, NULL, NULL, 0, 0, 0, 0, STRING_LIST_INIT_DUP } | |
1236 | ||
1237 | static int get_fetch_recurse_config(const struct submodule *submodule, | |
1238 | struct submodule_parallel_fetch *spf) | |
1239 | { | |
1240 | if (spf->command_line_option != RECURSE_SUBMODULES_DEFAULT) | |
1241 | return spf->command_line_option; | |
1242 | ||
1243 | if (submodule) { | |
1244 | char *key; | |
1245 | const char *value; | |
1246 | ||
1247 | int fetch_recurse = submodule->fetch_recurse; | |
1248 | key = xstrfmt("submodule.%s.fetchRecurseSubmodules", submodule->name); | |
1249 | if (!repo_config_get_string_const(spf->r, key, &value)) { | |
1250 | fetch_recurse = parse_fetch_recurse_submodules_arg(key, value); | |
1251 | } | |
1252 | free(key); | |
1253 | ||
1254 | if (fetch_recurse != RECURSE_SUBMODULES_NONE) | |
1255 | /* local config overrules everything except commandline */ | |
1256 | return fetch_recurse; | |
1257 | } | |
1258 | ||
1259 | return spf->default_option; | |
1260 | } | |
1261 | ||
1262 | static struct repository *get_submodule_repo_for(struct repository *r, | |
1263 | const struct submodule *sub) | |
1264 | { | |
1265 | struct repository *ret = xmalloc(sizeof(*ret)); | |
1266 | ||
1267 | if (repo_submodule_init(ret, r, sub)) { | |
1268 | /* | |
1269 | * No entry in .gitmodules? Technically not a submodule, | |
1270 | * but historically we supported repositories that happen to be | |
1271 | * in-place where a gitlink is. Keep supporting them. | |
1272 | */ | |
1273 | struct strbuf gitdir = STRBUF_INIT; | |
1274 | strbuf_repo_worktree_path(&gitdir, r, "%s/.git", sub->path); | |
1275 | if (repo_init(ret, gitdir.buf, NULL)) { | |
1276 | strbuf_release(&gitdir); | |
1277 | free(ret); | |
1278 | return NULL; | |
1279 | } | |
1280 | strbuf_release(&gitdir); | |
1281 | } | |
1282 | ||
1283 | return ret; | |
1284 | } | |
1285 | ||
1286 | static int get_next_submodule(struct child_process *cp, | |
1287 | struct strbuf *err, void *data, void **task_cb) | |
1288 | { | |
1289 | int ret = 0; | |
1290 | struct submodule_parallel_fetch *spf = data; | |
1291 | ||
1292 | for (; spf->count < spf->r->index->cache_nr; spf->count++) { | |
1293 | struct strbuf submodule_prefix = STRBUF_INIT; | |
1294 | const struct cache_entry *ce = spf->r->index->cache[spf->count]; | |
1295 | const char *default_argv; | |
1296 | const struct submodule *submodule; | |
1297 | struct repository *repo; | |
1298 | struct submodule default_submodule = SUBMODULE_INIT; | |
1299 | ||
1300 | if (!S_ISGITLINK(ce->ce_mode)) | |
1301 | continue; | |
1302 | ||
1303 | submodule = submodule_from_path(spf->r, &null_oid, ce->name); | |
1304 | if (!submodule) { | |
1305 | const char *name = default_name_or_path(ce->name); | |
1306 | if (name) { | |
1307 | default_submodule.path = name; | |
1308 | default_submodule.name = name; | |
1309 | submodule = &default_submodule; | |
1310 | } | |
1311 | } | |
1312 | ||
1313 | switch (get_fetch_recurse_config(submodule, spf)) | |
1314 | { | |
1315 | default: | |
1316 | case RECURSE_SUBMODULES_DEFAULT: | |
1317 | case RECURSE_SUBMODULES_ON_DEMAND: | |
1318 | if (!submodule || | |
1319 | !string_list_lookup( | |
1320 | &spf->changed_submodule_names, | |
1321 | submodule->name)) | |
1322 | continue; | |
1323 | default_argv = "on-demand"; | |
1324 | break; | |
1325 | case RECURSE_SUBMODULES_ON: | |
1326 | default_argv = "yes"; | |
1327 | break; | |
1328 | case RECURSE_SUBMODULES_OFF: | |
1329 | continue; | |
1330 | } | |
1331 | ||
1332 | strbuf_addf(&submodule_prefix, "%s%s/", spf->prefix, ce->name); | |
1333 | repo = get_submodule_repo_for(spf->r, submodule); | |
1334 | if (repo) { | |
1335 | child_process_init(cp); | |
1336 | cp->dir = xstrdup(repo->gitdir); | |
1337 | prepare_submodule_repo_env_in_gitdir(&cp->env_array); | |
1338 | cp->git_cmd = 1; | |
1339 | if (!spf->quiet) | |
1340 | strbuf_addf(err, "Fetching submodule %s%s\n", | |
1341 | spf->prefix, ce->name); | |
1342 | argv_array_init(&cp->args); | |
1343 | argv_array_pushv(&cp->args, spf->args.argv); | |
1344 | argv_array_push(&cp->args, default_argv); | |
1345 | argv_array_push(&cp->args, "--submodule-prefix"); | |
1346 | argv_array_push(&cp->args, submodule_prefix.buf); | |
1347 | ||
1348 | repo_clear(repo); | |
1349 | free(repo); | |
1350 | ret = 1; | |
1351 | } else { | |
1352 | /* | |
1353 | * An empty directory is normal, | |
1354 | * the submodule is not initialized | |
1355 | */ | |
1356 | if (S_ISGITLINK(ce->ce_mode) && | |
1357 | !is_empty_dir(ce->name)) { | |
1358 | spf->result = 1; | |
1359 | strbuf_addf(err, | |
1360 | _("Could not access submodule '%s'"), | |
1361 | ce->name); | |
1362 | } | |
1363 | } | |
1364 | strbuf_release(&submodule_prefix); | |
1365 | if (ret) { | |
1366 | spf->count++; | |
1367 | return 1; | |
1368 | } | |
1369 | } | |
1370 | return 0; | |
1371 | } | |
1372 | ||
1373 | static int fetch_start_failure(struct strbuf *err, | |
1374 | void *cb, void *task_cb) | |
1375 | { | |
1376 | struct submodule_parallel_fetch *spf = cb; | |
1377 | ||
1378 | spf->result = 1; | |
1379 | ||
1380 | return 0; | |
1381 | } | |
1382 | ||
1383 | static int fetch_finish(int retvalue, struct strbuf *err, | |
1384 | void *cb, void *task_cb) | |
1385 | { | |
1386 | struct submodule_parallel_fetch *spf = cb; | |
1387 | ||
1388 | if (retvalue) | |
1389 | spf->result = 1; | |
1390 | ||
1391 | return 0; | |
1392 | } | |
1393 | ||
1394 | int fetch_populated_submodules(struct repository *r, | |
1395 | const struct argv_array *options, | |
1396 | const char *prefix, int command_line_option, | |
1397 | int default_option, | |
1398 | int quiet, int max_parallel_jobs) | |
1399 | { | |
1400 | int i; | |
1401 | struct submodule_parallel_fetch spf = SPF_INIT; | |
1402 | ||
1403 | spf.r = r; | |
1404 | spf.command_line_option = command_line_option; | |
1405 | spf.default_option = default_option; | |
1406 | spf.quiet = quiet; | |
1407 | spf.prefix = prefix; | |
1408 | ||
1409 | if (!r->worktree) | |
1410 | goto out; | |
1411 | ||
1412 | if (repo_read_index(r) < 0) | |
1413 | die("index file corrupt"); | |
1414 | ||
1415 | argv_array_push(&spf.args, "fetch"); | |
1416 | for (i = 0; i < options->argc; i++) | |
1417 | argv_array_push(&spf.args, options->argv[i]); | |
1418 | argv_array_push(&spf.args, "--recurse-submodules-default"); | |
1419 | /* default value, "--submodule-prefix" and its value are added later */ | |
1420 | ||
1421 | calculate_changed_submodule_paths(r, &spf.changed_submodule_names); | |
1422 | string_list_sort(&spf.changed_submodule_names); | |
1423 | run_processes_parallel(max_parallel_jobs, | |
1424 | get_next_submodule, | |
1425 | fetch_start_failure, | |
1426 | fetch_finish, | |
1427 | &spf); | |
1428 | ||
1429 | argv_array_clear(&spf.args); | |
1430 | out: | |
1431 | free_submodules_oids(&spf.changed_submodule_names); | |
1432 | return spf.result; | |
1433 | } | |
1434 | ||
1435 | unsigned is_submodule_modified(const char *path, int ignore_untracked) | |
1436 | { | |
1437 | struct child_process cp = CHILD_PROCESS_INIT; | |
1438 | struct strbuf buf = STRBUF_INIT; | |
1439 | FILE *fp; | |
1440 | unsigned dirty_submodule = 0; | |
1441 | const char *git_dir; | |
1442 | int ignore_cp_exit_code = 0; | |
1443 | ||
1444 | strbuf_addf(&buf, "%s/.git", path); | |
1445 | git_dir = read_gitfile(buf.buf); | |
1446 | if (!git_dir) | |
1447 | git_dir = buf.buf; | |
1448 | if (!is_git_directory(git_dir)) { | |
1449 | if (is_directory(git_dir)) | |
1450 | die(_("'%s' not recognized as a git repository"), git_dir); | |
1451 | strbuf_release(&buf); | |
1452 | /* The submodule is not checked out, so it is not modified */ | |
1453 | return 0; | |
1454 | } | |
1455 | strbuf_reset(&buf); | |
1456 | ||
1457 | argv_array_pushl(&cp.args, "status", "--porcelain=2", NULL); | |
1458 | if (ignore_untracked) | |
1459 | argv_array_push(&cp.args, "-uno"); | |
1460 | ||
1461 | prepare_submodule_repo_env(&cp.env_array); | |
1462 | cp.git_cmd = 1; | |
1463 | cp.no_stdin = 1; | |
1464 | cp.out = -1; | |
1465 | cp.dir = path; | |
1466 | if (start_command(&cp)) | |
1467 | die("Could not run 'git status --porcelain=2' in submodule %s", path); | |
1468 | ||
1469 | fp = xfdopen(cp.out, "r"); | |
1470 | while (strbuf_getwholeline(&buf, fp, '\n') != EOF) { | |
1471 | /* regular untracked files */ | |
1472 | if (buf.buf[0] == '?') | |
1473 | dirty_submodule |= DIRTY_SUBMODULE_UNTRACKED; | |
1474 | ||
1475 | if (buf.buf[0] == 'u' || | |
1476 | buf.buf[0] == '1' || | |
1477 | buf.buf[0] == '2') { | |
1478 | /* T = line type, XY = status, SSSS = submodule state */ | |
1479 | if (buf.len < strlen("T XY SSSS")) | |
1480 | BUG("invalid status --porcelain=2 line %s", | |
1481 | buf.buf); | |
1482 | ||
1483 | if (buf.buf[5] == 'S' && buf.buf[8] == 'U') | |
1484 | /* nested untracked file */ | |
1485 | dirty_submodule |= DIRTY_SUBMODULE_UNTRACKED; | |
1486 | ||
1487 | if (buf.buf[0] == 'u' || | |
1488 | buf.buf[0] == '2' || | |
1489 | memcmp(buf.buf + 5, "S..U", 4)) | |
1490 | /* other change */ | |
1491 | dirty_submodule |= DIRTY_SUBMODULE_MODIFIED; | |
1492 | } | |
1493 | ||
1494 | if ((dirty_submodule & DIRTY_SUBMODULE_MODIFIED) && | |
1495 | ((dirty_submodule & DIRTY_SUBMODULE_UNTRACKED) || | |
1496 | ignore_untracked)) { | |
1497 | /* | |
1498 | * We're not interested in any further information from | |
1499 | * the child any more, neither output nor its exit code. | |
1500 | */ | |
1501 | ignore_cp_exit_code = 1; | |
1502 | break; | |
1503 | } | |
1504 | } | |
1505 | fclose(fp); | |
1506 | ||
1507 | if (finish_command(&cp) && !ignore_cp_exit_code) | |
1508 | die("'git status --porcelain=2' failed in submodule %s", path); | |
1509 | ||
1510 | strbuf_release(&buf); | |
1511 | return dirty_submodule; | |
1512 | } | |
1513 | ||
1514 | int submodule_uses_gitfile(const char *path) | |
1515 | { | |
1516 | struct child_process cp = CHILD_PROCESS_INIT; | |
1517 | const char *argv[] = { | |
1518 | "submodule", | |
1519 | "foreach", | |
1520 | "--quiet", | |
1521 | "--recursive", | |
1522 | "test -f .git", | |
1523 | NULL, | |
1524 | }; | |
1525 | struct strbuf buf = STRBUF_INIT; | |
1526 | const char *git_dir; | |
1527 | ||
1528 | strbuf_addf(&buf, "%s/.git", path); | |
1529 | git_dir = read_gitfile(buf.buf); | |
1530 | if (!git_dir) { | |
1531 | strbuf_release(&buf); | |
1532 | return 0; | |
1533 | } | |
1534 | strbuf_release(&buf); | |
1535 | ||
1536 | /* Now test that all nested submodules use a gitfile too */ | |
1537 | cp.argv = argv; | |
1538 | prepare_submodule_repo_env(&cp.env_array); | |
1539 | cp.git_cmd = 1; | |
1540 | cp.no_stdin = 1; | |
1541 | cp.no_stderr = 1; | |
1542 | cp.no_stdout = 1; | |
1543 | cp.dir = path; | |
1544 | if (run_command(&cp)) | |
1545 | return 0; | |
1546 | ||
1547 | return 1; | |
1548 | } | |
1549 | ||
1550 | /* | |
1551 | * Check if it is a bad idea to remove a submodule, i.e. if we'd lose data | |
1552 | * when doing so. | |
1553 | * | |
1554 | * Return 1 if we'd lose data, return 0 if the removal is fine, | |
1555 | * and negative values for errors. | |
1556 | */ | |
1557 | int bad_to_remove_submodule(const char *path, unsigned flags) | |
1558 | { | |
1559 | ssize_t len; | |
1560 | struct child_process cp = CHILD_PROCESS_INIT; | |
1561 | struct strbuf buf = STRBUF_INIT; | |
1562 | int ret = 0; | |
1563 | ||
1564 | if (!file_exists(path) || is_empty_dir(path)) | |
1565 | return 0; | |
1566 | ||
1567 | if (!submodule_uses_gitfile(path)) | |
1568 | return 1; | |
1569 | ||
1570 | argv_array_pushl(&cp.args, "status", "--porcelain", | |
1571 | "--ignore-submodules=none", NULL); | |
1572 | ||
1573 | if (flags & SUBMODULE_REMOVAL_IGNORE_UNTRACKED) | |
1574 | argv_array_push(&cp.args, "-uno"); | |
1575 | else | |
1576 | argv_array_push(&cp.args, "-uall"); | |
1577 | ||
1578 | if (!(flags & SUBMODULE_REMOVAL_IGNORE_IGNORED_UNTRACKED)) | |
1579 | argv_array_push(&cp.args, "--ignored"); | |
1580 | ||
1581 | prepare_submodule_repo_env(&cp.env_array); | |
1582 | cp.git_cmd = 1; | |
1583 | cp.no_stdin = 1; | |
1584 | cp.out = -1; | |
1585 | cp.dir = path; | |
1586 | if (start_command(&cp)) { | |
1587 | if (flags & SUBMODULE_REMOVAL_DIE_ON_ERROR) | |
1588 | die(_("could not start 'git status' in submodule '%s'"), | |
1589 | path); | |
1590 | ret = -1; | |
1591 | goto out; | |
1592 | } | |
1593 | ||
1594 | len = strbuf_read(&buf, cp.out, 1024); | |
1595 | if (len > 2) | |
1596 | ret = 1; | |
1597 | close(cp.out); | |
1598 | ||
1599 | if (finish_command(&cp)) { | |
1600 | if (flags & SUBMODULE_REMOVAL_DIE_ON_ERROR) | |
1601 | die(_("could not run 'git status' in submodule '%s'"), | |
1602 | path); | |
1603 | ret = -1; | |
1604 | } | |
1605 | out: | |
1606 | strbuf_release(&buf); | |
1607 | return ret; | |
1608 | } | |
1609 | ||
1610 | static const char *get_super_prefix_or_empty(void) | |
1611 | { | |
1612 | const char *s = get_super_prefix(); | |
1613 | if (!s) | |
1614 | s = ""; | |
1615 | return s; | |
1616 | } | |
1617 | ||
1618 | static int submodule_has_dirty_index(const struct submodule *sub) | |
1619 | { | |
1620 | struct child_process cp = CHILD_PROCESS_INIT; | |
1621 | ||
1622 | prepare_submodule_repo_env(&cp.env_array); | |
1623 | ||
1624 | cp.git_cmd = 1; | |
1625 | argv_array_pushl(&cp.args, "diff-index", "--quiet", | |
1626 | "--cached", "HEAD", NULL); | |
1627 | cp.no_stdin = 1; | |
1628 | cp.no_stdout = 1; | |
1629 | cp.dir = sub->path; | |
1630 | if (start_command(&cp)) | |
1631 | die("could not recurse into submodule '%s'", sub->path); | |
1632 | ||
1633 | return finish_command(&cp); | |
1634 | } | |
1635 | ||
1636 | static void submodule_reset_index(const char *path) | |
1637 | { | |
1638 | struct child_process cp = CHILD_PROCESS_INIT; | |
1639 | prepare_submodule_repo_env(&cp.env_array); | |
1640 | ||
1641 | cp.git_cmd = 1; | |
1642 | cp.no_stdin = 1; | |
1643 | cp.dir = path; | |
1644 | ||
1645 | argv_array_pushf(&cp.args, "--super-prefix=%s%s/", | |
1646 | get_super_prefix_or_empty(), path); | |
1647 | argv_array_pushl(&cp.args, "read-tree", "-u", "--reset", NULL); | |
1648 | ||
1649 | argv_array_push(&cp.args, empty_tree_oid_hex()); | |
1650 | ||
1651 | if (run_command(&cp)) | |
1652 | die("could not reset submodule index"); | |
1653 | } | |
1654 | ||
1655 | /** | |
1656 | * Moves a submodule at a given path from a given head to another new head. | |
1657 | * For edge cases (a submodule coming into existence or removing a submodule) | |
1658 | * pass NULL for old or new respectively. | |
1659 | */ | |
1660 | int submodule_move_head(const char *path, | |
1661 | const char *old_head, | |
1662 | const char *new_head, | |
1663 | unsigned flags) | |
1664 | { | |
1665 | int ret = 0; | |
1666 | struct child_process cp = CHILD_PROCESS_INIT; | |
1667 | const struct submodule *sub; | |
1668 | int *error_code_ptr, error_code; | |
1669 | ||
1670 | if (!is_submodule_active(the_repository, path)) | |
1671 | return 0; | |
1672 | ||
1673 | if (flags & SUBMODULE_MOVE_HEAD_FORCE) | |
1674 | /* | |
1675 | * Pass non NULL pointer to is_submodule_populated_gently | |
1676 | * to prevent die()-ing. We'll use connect_work_tree_and_git_dir | |
1677 | * to fixup the submodule in the force case later. | |
1678 | */ | |
1679 | error_code_ptr = &error_code; | |
1680 | else | |
1681 | error_code_ptr = NULL; | |
1682 | ||
1683 | if (old_head && !is_submodule_populated_gently(path, error_code_ptr)) | |
1684 | return 0; | |
1685 | ||
1686 | sub = submodule_from_path(the_repository, &null_oid, path); | |
1687 | ||
1688 | if (!sub) | |
1689 | BUG("could not get submodule information for '%s'", path); | |
1690 | ||
1691 | if (old_head && !(flags & SUBMODULE_MOVE_HEAD_FORCE)) { | |
1692 | /* Check if the submodule has a dirty index. */ | |
1693 | if (submodule_has_dirty_index(sub)) | |
1694 | return error(_("submodule '%s' has dirty index"), path); | |
1695 | } | |
1696 | ||
1697 | if (!(flags & SUBMODULE_MOVE_HEAD_DRY_RUN)) { | |
1698 | if (old_head) { | |
1699 | if (!submodule_uses_gitfile(path)) | |
1700 | absorb_git_dir_into_superproject("", path, | |
1701 | ABSORB_GITDIR_RECURSE_SUBMODULES); | |
1702 | } else { | |
1703 | char *gitdir = xstrfmt("%s/modules/%s", | |
1704 | get_git_common_dir(), sub->name); | |
1705 | connect_work_tree_and_git_dir(path, gitdir, 0); | |
1706 | free(gitdir); | |
1707 | ||
1708 | /* make sure the index is clean as well */ | |
1709 | submodule_reset_index(path); | |
1710 | } | |
1711 | ||
1712 | if (old_head && (flags & SUBMODULE_MOVE_HEAD_FORCE)) { | |
1713 | char *gitdir = xstrfmt("%s/modules/%s", | |
1714 | get_git_common_dir(), sub->name); | |
1715 | connect_work_tree_and_git_dir(path, gitdir, 1); | |
1716 | free(gitdir); | |
1717 | } | |
1718 | } | |
1719 | ||
1720 | prepare_submodule_repo_env(&cp.env_array); | |
1721 | ||
1722 | cp.git_cmd = 1; | |
1723 | cp.no_stdin = 1; | |
1724 | cp.dir = path; | |
1725 | ||
1726 | argv_array_pushf(&cp.args, "--super-prefix=%s%s/", | |
1727 | get_super_prefix_or_empty(), path); | |
1728 | argv_array_pushl(&cp.args, "read-tree", "--recurse-submodules", NULL); | |
1729 | ||
1730 | if (flags & SUBMODULE_MOVE_HEAD_DRY_RUN) | |
1731 | argv_array_push(&cp.args, "-n"); | |
1732 | else | |
1733 | argv_array_push(&cp.args, "-u"); | |
1734 | ||
1735 | if (flags & SUBMODULE_MOVE_HEAD_FORCE) | |
1736 | argv_array_push(&cp.args, "--reset"); | |
1737 | else | |
1738 | argv_array_push(&cp.args, "-m"); | |
1739 | ||
1740 | if (!(flags & SUBMODULE_MOVE_HEAD_FORCE)) | |
1741 | argv_array_push(&cp.args, old_head ? old_head : empty_tree_oid_hex()); | |
1742 | ||
1743 | argv_array_push(&cp.args, new_head ? new_head : empty_tree_oid_hex()); | |
1744 | ||
1745 | if (run_command(&cp)) { | |
1746 | ret = error(_("Submodule '%s' could not be updated."), path); | |
1747 | goto out; | |
1748 | } | |
1749 | ||
1750 | if (!(flags & SUBMODULE_MOVE_HEAD_DRY_RUN)) { | |
1751 | if (new_head) { | |
1752 | child_process_init(&cp); | |
1753 | /* also set the HEAD accordingly */ | |
1754 | cp.git_cmd = 1; | |
1755 | cp.no_stdin = 1; | |
1756 | cp.dir = path; | |
1757 | ||
1758 | prepare_submodule_repo_env(&cp.env_array); | |
1759 | argv_array_pushl(&cp.args, "update-ref", "HEAD", | |
1760 | "--no-deref", new_head, NULL); | |
1761 | ||
1762 | if (run_command(&cp)) { | |
1763 | ret = -1; | |
1764 | goto out; | |
1765 | } | |
1766 | } else { | |
1767 | struct strbuf sb = STRBUF_INIT; | |
1768 | ||
1769 | strbuf_addf(&sb, "%s/.git", path); | |
1770 | unlink_or_warn(sb.buf); | |
1771 | strbuf_release(&sb); | |
1772 | ||
1773 | if (is_empty_dir(path)) | |
1774 | rmdir_or_warn(path); | |
1775 | } | |
1776 | } | |
1777 | out: | |
1778 | return ret; | |
1779 | } | |
1780 | ||
1781 | /* | |
1782 | * Embeds a single submodules git directory into the superprojects git dir, | |
1783 | * non recursively. | |
1784 | */ | |
1785 | static void relocate_single_git_dir_into_superproject(const char *prefix, | |
1786 | const char *path) | |
1787 | { | |
1788 | char *old_git_dir = NULL, *real_old_git_dir = NULL, *real_new_git_dir = NULL; | |
1789 | const char *new_git_dir; | |
1790 | const struct submodule *sub; | |
1791 | ||
1792 | if (submodule_uses_worktrees(path)) | |
1793 | die(_("relocate_gitdir for submodule '%s' with " | |
1794 | "more than one worktree not supported"), path); | |
1795 | ||
1796 | old_git_dir = xstrfmt("%s/.git", path); | |
1797 | if (read_gitfile(old_git_dir)) | |
1798 | /* If it is an actual gitfile, it doesn't need migration. */ | |
1799 | return; | |
1800 | ||
1801 | real_old_git_dir = real_pathdup(old_git_dir, 1); | |
1802 | ||
1803 | sub = submodule_from_path(the_repository, &null_oid, path); | |
1804 | if (!sub) | |
1805 | die(_("could not lookup name for submodule '%s'"), path); | |
1806 | ||
1807 | new_git_dir = git_path("modules/%s", sub->name); | |
1808 | if (safe_create_leading_directories_const(new_git_dir) < 0) | |
1809 | die(_("could not create directory '%s'"), new_git_dir); | |
1810 | real_new_git_dir = real_pathdup(new_git_dir, 1); | |
1811 | ||
1812 | fprintf(stderr, _("Migrating git directory of '%s%s' from\n'%s' to\n'%s'\n"), | |
1813 | get_super_prefix_or_empty(), path, | |
1814 | real_old_git_dir, real_new_git_dir); | |
1815 | ||
1816 | relocate_gitdir(path, real_old_git_dir, real_new_git_dir); | |
1817 | ||
1818 | free(old_git_dir); | |
1819 | free(real_old_git_dir); | |
1820 | free(real_new_git_dir); | |
1821 | } | |
1822 | ||
1823 | /* | |
1824 | * Migrate the git directory of the submodule given by path from | |
1825 | * having its git directory within the working tree to the git dir nested | |
1826 | * in its superprojects git dir under modules/. | |
1827 | */ | |
1828 | void absorb_git_dir_into_superproject(const char *prefix, | |
1829 | const char *path, | |
1830 | unsigned flags) | |
1831 | { | |
1832 | int err_code; | |
1833 | const char *sub_git_dir; | |
1834 | struct strbuf gitdir = STRBUF_INIT; | |
1835 | strbuf_addf(&gitdir, "%s/.git", path); | |
1836 | sub_git_dir = resolve_gitdir_gently(gitdir.buf, &err_code); | |
1837 | ||
1838 | /* Not populated? */ | |
1839 | if (!sub_git_dir) { | |
1840 | const struct submodule *sub; | |
1841 | ||
1842 | if (err_code == READ_GITFILE_ERR_STAT_FAILED) { | |
1843 | /* unpopulated as expected */ | |
1844 | strbuf_release(&gitdir); | |
1845 | return; | |
1846 | } | |
1847 | ||
1848 | if (err_code != READ_GITFILE_ERR_NOT_A_REPO) | |
1849 | /* We don't know what broke here. */ | |
1850 | read_gitfile_error_die(err_code, path, NULL); | |
1851 | ||
1852 | /* | |
1853 | * Maybe populated, but no git directory was found? | |
1854 | * This can happen if the superproject is a submodule | |
1855 | * itself and was just absorbed. The absorption of the | |
1856 | * superproject did not rewrite the git file links yet, | |
1857 | * fix it now. | |
1858 | */ | |
1859 | sub = submodule_from_path(the_repository, &null_oid, path); | |
1860 | if (!sub) | |
1861 | die(_("could not lookup name for submodule '%s'"), path); | |
1862 | connect_work_tree_and_git_dir(path, | |
1863 | git_path("modules/%s", sub->name), 0); | |
1864 | } else { | |
1865 | /* Is it already absorbed into the superprojects git dir? */ | |
1866 | char *real_sub_git_dir = real_pathdup(sub_git_dir, 1); | |
1867 | char *real_common_git_dir = real_pathdup(get_git_common_dir(), 1); | |
1868 | ||
1869 | if (!starts_with(real_sub_git_dir, real_common_git_dir)) | |
1870 | relocate_single_git_dir_into_superproject(prefix, path); | |
1871 | ||
1872 | free(real_sub_git_dir); | |
1873 | free(real_common_git_dir); | |
1874 | } | |
1875 | strbuf_release(&gitdir); | |
1876 | ||
1877 | if (flags & ABSORB_GITDIR_RECURSE_SUBMODULES) { | |
1878 | struct child_process cp = CHILD_PROCESS_INIT; | |
1879 | struct strbuf sb = STRBUF_INIT; | |
1880 | ||
1881 | if (flags & ~ABSORB_GITDIR_RECURSE_SUBMODULES) | |
1882 | BUG("we don't know how to pass the flags down?"); | |
1883 | ||
1884 | strbuf_addstr(&sb, get_super_prefix_or_empty()); | |
1885 | strbuf_addstr(&sb, path); | |
1886 | strbuf_addch(&sb, '/'); | |
1887 | ||
1888 | cp.dir = path; | |
1889 | cp.git_cmd = 1; | |
1890 | cp.no_stdin = 1; | |
1891 | argv_array_pushl(&cp.args, "--super-prefix", sb.buf, | |
1892 | "submodule--helper", | |
1893 | "absorb-git-dirs", NULL); | |
1894 | prepare_submodule_repo_env(&cp.env_array); | |
1895 | if (run_command(&cp)) | |
1896 | die(_("could not recurse into submodule '%s'"), path); | |
1897 | ||
1898 | strbuf_release(&sb); | |
1899 | } | |
1900 | } | |
1901 | ||
1902 | const char *get_superproject_working_tree(void) | |
1903 | { | |
1904 | struct child_process cp = CHILD_PROCESS_INIT; | |
1905 | struct strbuf sb = STRBUF_INIT; | |
1906 | const char *one_up = real_path_if_valid("../"); | |
1907 | const char *cwd = xgetcwd(); | |
1908 | const char *ret = NULL; | |
1909 | const char *subpath; | |
1910 | int code; | |
1911 | ssize_t len; | |
1912 | ||
1913 | if (!is_inside_work_tree()) | |
1914 | /* | |
1915 | * FIXME: | |
1916 | * We might have a superproject, but it is harder | |
1917 | * to determine. | |
1918 | */ | |
1919 | return NULL; | |
1920 | ||
1921 | if (!one_up) | |
1922 | return NULL; | |
1923 | ||
1924 | subpath = relative_path(cwd, one_up, &sb); | |
1925 | ||
1926 | prepare_submodule_repo_env(&cp.env_array); | |
1927 | argv_array_pop(&cp.env_array); | |
1928 | ||
1929 | argv_array_pushl(&cp.args, "--literal-pathspecs", "-C", "..", | |
1930 | "ls-files", "-z", "--stage", "--full-name", "--", | |
1931 | subpath, NULL); | |
1932 | strbuf_reset(&sb); | |
1933 | ||
1934 | cp.no_stdin = 1; | |
1935 | cp.no_stderr = 1; | |
1936 | cp.out = -1; | |
1937 | cp.git_cmd = 1; | |
1938 | ||
1939 | if (start_command(&cp)) | |
1940 | die(_("could not start ls-files in ..")); | |
1941 | ||
1942 | len = strbuf_read(&sb, cp.out, PATH_MAX); | |
1943 | close(cp.out); | |
1944 | ||
1945 | if (starts_with(sb.buf, "160000")) { | |
1946 | int super_sub_len; | |
1947 | int cwd_len = strlen(cwd); | |
1948 | char *super_sub, *super_wt; | |
1949 | ||
1950 | /* | |
1951 | * There is a superproject having this repo as a submodule. | |
1952 | * The format is <mode> SP <hash> SP <stage> TAB <full name> \0, | |
1953 | * We're only interested in the name after the tab. | |
1954 | */ | |
1955 | super_sub = strchr(sb.buf, '\t') + 1; | |
1956 | super_sub_len = strlen(super_sub); | |
1957 | ||
1958 | if (super_sub_len > cwd_len || | |
1959 | strcmp(&cwd[cwd_len - super_sub_len], super_sub)) | |
1960 | BUG("returned path string doesn't match cwd?"); | |
1961 | ||
1962 | super_wt = xstrdup(cwd); | |
1963 | super_wt[cwd_len - super_sub_len] = '\0'; | |
1964 | ||
1965 | ret = real_path(super_wt); | |
1966 | free(super_wt); | |
1967 | } | |
1968 | strbuf_release(&sb); | |
1969 | ||
1970 | code = finish_command(&cp); | |
1971 | ||
1972 | if (code == 128) | |
1973 | /* '../' is not a git repository */ | |
1974 | return NULL; | |
1975 | if (code == 0 && len == 0) | |
1976 | /* There is an unrelated git repository at '../' */ | |
1977 | return NULL; | |
1978 | if (code) | |
1979 | die(_("ls-tree returned unexpected return code %d"), code); | |
1980 | ||
1981 | return ret; | |
1982 | } | |
1983 | ||
1984 | /* | |
1985 | * Put the gitdir for a submodule (given relative to the main | |
1986 | * repository worktree) into `buf`, or return -1 on error. | |
1987 | */ | |
1988 | int submodule_to_gitdir(struct strbuf *buf, const char *submodule) | |
1989 | { | |
1990 | const struct submodule *sub; | |
1991 | const char *git_dir; | |
1992 | int ret = 0; | |
1993 | ||
1994 | strbuf_reset(buf); | |
1995 | strbuf_addstr(buf, submodule); | |
1996 | strbuf_complete(buf, '/'); | |
1997 | strbuf_addstr(buf, ".git"); | |
1998 | ||
1999 | git_dir = read_gitfile(buf->buf); | |
2000 | if (git_dir) { | |
2001 | strbuf_reset(buf); | |
2002 | strbuf_addstr(buf, git_dir); | |
2003 | } | |
2004 | if (!is_git_directory(buf->buf)) { | |
2005 | sub = submodule_from_path(the_repository, &null_oid, submodule); | |
2006 | if (!sub) { | |
2007 | ret = -1; | |
2008 | goto cleanup; | |
2009 | } | |
2010 | strbuf_reset(buf); | |
2011 | strbuf_git_path(buf, "%s/%s", "modules", sub->name); | |
2012 | } | |
2013 | ||
2014 | cleanup: | |
2015 | return ret; | |
2016 | } |