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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 "sha1-array.h" | |
16 | #include "argv-array.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_match_stat(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_const(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 argv_array args = ARGV_ARRAY_INIT; | |
266 | const struct string_list_item *item; | |
267 | ||
268 | for_each_string_list_item(item, sl) { | |
269 | argv_array_push(&args, item->string); | |
270 | } | |
271 | ||
272 | parse_pathspec(&ps, 0, 0, NULL, args.argv); | |
273 | ret = match_pathspec(repo->index, &ps, path, strlen(path), 0, NULL, 1); | |
274 | ||
275 | argv_array_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_summary(struct rev_info *rev, const char *path, | |
442 | struct commit *left, struct commit *right, | |
443 | struct commit_list *merge_bases) | |
444 | { | |
445 | struct commit_list *list; | |
446 | ||
447 | repo_init_revisions(the_repository, rev, NULL); | |
448 | setup_revisions(0, NULL, rev, NULL); | |
449 | rev->left_right = 1; | |
450 | rev->first_parent_only = 1; | |
451 | left->object.flags |= SYMMETRIC_LEFT; | |
452 | add_pending_object(rev, &left->object, path); | |
453 | add_pending_object(rev, &right->object, path); | |
454 | for (list = merge_bases; list; list = list->next) { | |
455 | list->item->object.flags |= UNINTERESTING; | |
456 | add_pending_object(rev, &list->item->object, | |
457 | oid_to_hex(&list->item->object.oid)); | |
458 | } | |
459 | return prepare_revision_walk(rev); | |
460 | } | |
461 | ||
462 | static void print_submodule_summary(struct repository *r, struct rev_info *rev, struct diff_options *o) | |
463 | { | |
464 | static const char format[] = " %m %s"; | |
465 | struct strbuf sb = STRBUF_INIT; | |
466 | struct commit *commit; | |
467 | ||
468 | while ((commit = get_revision(rev))) { | |
469 | struct pretty_print_context ctx = {0}; | |
470 | ctx.date_mode = rev->date_mode; | |
471 | ctx.output_encoding = get_log_output_encoding(); | |
472 | strbuf_setlen(&sb, 0); | |
473 | repo_format_commit_message(r, commit, format, &sb, | |
474 | &ctx); | |
475 | strbuf_addch(&sb, '\n'); | |
476 | if (commit->object.flags & SYMMETRIC_LEFT) | |
477 | diff_emit_submodule_del(o, sb.buf); | |
478 | else | |
479 | diff_emit_submodule_add(o, sb.buf); | |
480 | } | |
481 | strbuf_release(&sb); | |
482 | } | |
483 | ||
484 | static void prepare_submodule_repo_env_no_git_dir(struct argv_array *out) | |
485 | { | |
486 | const char * const *var; | |
487 | ||
488 | for (var = local_repo_env; *var; var++) { | |
489 | if (strcmp(*var, CONFIG_DATA_ENVIRONMENT)) | |
490 | argv_array_push(out, *var); | |
491 | } | |
492 | } | |
493 | ||
494 | void prepare_submodule_repo_env(struct argv_array *out) | |
495 | { | |
496 | prepare_submodule_repo_env_no_git_dir(out); | |
497 | argv_array_pushf(out, "%s=%s", GIT_DIR_ENVIRONMENT, | |
498 | DEFAULT_GIT_DIR_ENVIRONMENT); | |
499 | } | |
500 | ||
501 | static void prepare_submodule_repo_env_in_gitdir(struct argv_array *out) | |
502 | { | |
503 | prepare_submodule_repo_env_no_git_dir(out); | |
504 | argv_array_pushf(out, "%s=.", GIT_DIR_ENVIRONMENT); | |
505 | } | |
506 | ||
507 | /* | |
508 | * Initialize a repository struct for a submodule based on the provided 'path'. | |
509 | * | |
510 | * Unlike repo_submodule_init, this tolerates submodules not present | |
511 | * in .gitmodules. This function exists only to preserve historical behavior, | |
512 | * | |
513 | * Returns the repository struct on success, | |
514 | * NULL when the submodule is not present. | |
515 | */ | |
516 | static struct repository *open_submodule(const char *path) | |
517 | { | |
518 | struct strbuf sb = STRBUF_INIT; | |
519 | struct repository *out = xmalloc(sizeof(*out)); | |
520 | ||
521 | if (submodule_to_gitdir(&sb, path) || repo_init(out, sb.buf, NULL)) { | |
522 | strbuf_release(&sb); | |
523 | free(out); | |
524 | return NULL; | |
525 | } | |
526 | ||
527 | /* Mark it as a submodule */ | |
528 | out->submodule_prefix = xstrdup(path); | |
529 | ||
530 | strbuf_release(&sb); | |
531 | return out; | |
532 | } | |
533 | ||
534 | /* | |
535 | * Helper function to display the submodule header line prior to the full | |
536 | * summary output. | |
537 | * | |
538 | * If it can locate the submodule git directory it will create a repository | |
539 | * handle for the submodule and lookup both the left and right commits and | |
540 | * put them into the left and right pointers. | |
541 | */ | |
542 | static void show_submodule_header(struct diff_options *o, | |
543 | const char *path, | |
544 | struct object_id *one, struct object_id *two, | |
545 | unsigned dirty_submodule, | |
546 | struct repository *sub, | |
547 | struct commit **left, struct commit **right, | |
548 | struct commit_list **merge_bases) | |
549 | { | |
550 | const char *message = NULL; | |
551 | struct strbuf sb = STRBUF_INIT; | |
552 | int fast_forward = 0, fast_backward = 0; | |
553 | ||
554 | if (dirty_submodule & DIRTY_SUBMODULE_UNTRACKED) | |
555 | diff_emit_submodule_untracked(o, path); | |
556 | ||
557 | if (dirty_submodule & DIRTY_SUBMODULE_MODIFIED) | |
558 | diff_emit_submodule_modified(o, path); | |
559 | ||
560 | if (is_null_oid(one)) | |
561 | message = "(new submodule)"; | |
562 | else if (is_null_oid(two)) | |
563 | message = "(submodule deleted)"; | |
564 | ||
565 | if (!sub) { | |
566 | if (!message) | |
567 | message = "(commits not present)"; | |
568 | goto output_header; | |
569 | } | |
570 | ||
571 | /* | |
572 | * Attempt to lookup the commit references, and determine if this is | |
573 | * a fast forward or fast backwards update. | |
574 | */ | |
575 | *left = lookup_commit_reference(sub, one); | |
576 | *right = lookup_commit_reference(sub, two); | |
577 | ||
578 | /* | |
579 | * Warn about missing commits in the submodule project, but only if | |
580 | * they aren't null. | |
581 | */ | |
582 | if ((!is_null_oid(one) && !*left) || | |
583 | (!is_null_oid(two) && !*right)) | |
584 | message = "(commits not present)"; | |
585 | ||
586 | *merge_bases = repo_get_merge_bases(sub, *left, *right); | |
587 | if (*merge_bases) { | |
588 | if ((*merge_bases)->item == *left) | |
589 | fast_forward = 1; | |
590 | else if ((*merge_bases)->item == *right) | |
591 | fast_backward = 1; | |
592 | } | |
593 | ||
594 | if (oideq(one, two)) { | |
595 | strbuf_release(&sb); | |
596 | return; | |
597 | } | |
598 | ||
599 | output_header: | |
600 | strbuf_addf(&sb, "Submodule %s ", path); | |
601 | strbuf_add_unique_abbrev(&sb, one, DEFAULT_ABBREV); | |
602 | strbuf_addstr(&sb, (fast_backward || fast_forward) ? ".." : "..."); | |
603 | strbuf_add_unique_abbrev(&sb, two, DEFAULT_ABBREV); | |
604 | if (message) | |
605 | strbuf_addf(&sb, " %s\n", message); | |
606 | else | |
607 | strbuf_addf(&sb, "%s:\n", fast_backward ? " (rewind)" : ""); | |
608 | diff_emit_submodule_header(o, sb.buf); | |
609 | ||
610 | strbuf_release(&sb); | |
611 | } | |
612 | ||
613 | void show_submodule_summary(struct diff_options *o, const char *path, | |
614 | struct object_id *one, struct object_id *two, | |
615 | unsigned dirty_submodule) | |
616 | { | |
617 | struct rev_info rev; | |
618 | struct commit *left = NULL, *right = NULL; | |
619 | struct commit_list *merge_bases = NULL; | |
620 | struct repository *sub; | |
621 | ||
622 | sub = open_submodule(path); | |
623 | show_submodule_header(o, path, one, two, dirty_submodule, | |
624 | sub, &left, &right, &merge_bases); | |
625 | ||
626 | /* | |
627 | * If we don't have both a left and a right pointer, there is no | |
628 | * reason to try and display a summary. The header line should contain | |
629 | * all the information the user needs. | |
630 | */ | |
631 | if (!left || !right || !sub) | |
632 | goto out; | |
633 | ||
634 | /* Treat revision walker failure the same as missing commits */ | |
635 | if (prepare_submodule_summary(&rev, path, left, right, merge_bases)) { | |
636 | diff_emit_submodule_error(o, "(revision walker failed)\n"); | |
637 | goto out; | |
638 | } | |
639 | ||
640 | print_submodule_summary(sub, &rev, o); | |
641 | ||
642 | out: | |
643 | if (merge_bases) | |
644 | free_commit_list(merge_bases); | |
645 | clear_commit_marks(left, ~0); | |
646 | clear_commit_marks(right, ~0); | |
647 | if (sub) { | |
648 | repo_clear(sub); | |
649 | free(sub); | |
650 | } | |
651 | } | |
652 | ||
653 | void show_submodule_inline_diff(struct diff_options *o, const char *path, | |
654 | struct object_id *one, struct object_id *two, | |
655 | unsigned dirty_submodule) | |
656 | { | |
657 | const struct object_id *old_oid = the_hash_algo->empty_tree, *new_oid = the_hash_algo->empty_tree; | |
658 | struct commit *left = NULL, *right = NULL; | |
659 | struct commit_list *merge_bases = NULL; | |
660 | struct child_process cp = CHILD_PROCESS_INIT; | |
661 | struct strbuf sb = STRBUF_INIT; | |
662 | struct repository *sub; | |
663 | ||
664 | sub = open_submodule(path); | |
665 | show_submodule_header(o, path, one, two, dirty_submodule, | |
666 | sub, &left, &right, &merge_bases); | |
667 | ||
668 | /* We need a valid left and right commit to display a difference */ | |
669 | if (!(left || is_null_oid(one)) || | |
670 | !(right || is_null_oid(two))) | |
671 | goto done; | |
672 | ||
673 | if (left) | |
674 | old_oid = one; | |
675 | if (right) | |
676 | new_oid = two; | |
677 | ||
678 | cp.git_cmd = 1; | |
679 | cp.dir = path; | |
680 | cp.out = -1; | |
681 | cp.no_stdin = 1; | |
682 | ||
683 | /* TODO: other options may need to be passed here. */ | |
684 | argv_array_pushl(&cp.args, "diff", "--submodule=diff", NULL); | |
685 | argv_array_pushf(&cp.args, "--color=%s", want_color(o->use_color) ? | |
686 | "always" : "never"); | |
687 | ||
688 | if (o->flags.reverse_diff) { | |
689 | argv_array_pushf(&cp.args, "--src-prefix=%s%s/", | |
690 | o->b_prefix, path); | |
691 | argv_array_pushf(&cp.args, "--dst-prefix=%s%s/", | |
692 | o->a_prefix, path); | |
693 | } else { | |
694 | argv_array_pushf(&cp.args, "--src-prefix=%s%s/", | |
695 | o->a_prefix, path); | |
696 | argv_array_pushf(&cp.args, "--dst-prefix=%s%s/", | |
697 | o->b_prefix, path); | |
698 | } | |
699 | argv_array_push(&cp.args, oid_to_hex(old_oid)); | |
700 | /* | |
701 | * If the submodule has modified content, we will diff against the | |
702 | * work tree, under the assumption that the user has asked for the | |
703 | * diff format and wishes to actually see all differences even if they | |
704 | * haven't yet been committed to the submodule yet. | |
705 | */ | |
706 | if (!(dirty_submodule & DIRTY_SUBMODULE_MODIFIED)) | |
707 | argv_array_push(&cp.args, oid_to_hex(new_oid)); | |
708 | ||
709 | prepare_submodule_repo_env(&cp.env_array); | |
710 | if (start_command(&cp)) | |
711 | diff_emit_submodule_error(o, "(diff failed)\n"); | |
712 | ||
713 | while (strbuf_getwholeline_fd(&sb, cp.out, '\n') != EOF) | |
714 | diff_emit_submodule_pipethrough(o, sb.buf, sb.len); | |
715 | ||
716 | if (finish_command(&cp)) | |
717 | diff_emit_submodule_error(o, "(diff failed)\n"); | |
718 | ||
719 | done: | |
720 | strbuf_release(&sb); | |
721 | if (merge_bases) | |
722 | free_commit_list(merge_bases); | |
723 | if (left) | |
724 | clear_commit_marks(left, ~0); | |
725 | if (right) | |
726 | clear_commit_marks(right, ~0); | |
727 | if (sub) { | |
728 | repo_clear(sub); | |
729 | free(sub); | |
730 | } | |
731 | } | |
732 | ||
733 | int should_update_submodules(void) | |
734 | { | |
735 | return config_update_recurse_submodules == RECURSE_SUBMODULES_ON; | |
736 | } | |
737 | ||
738 | const struct submodule *submodule_from_ce(const struct cache_entry *ce) | |
739 | { | |
740 | if (!S_ISGITLINK(ce->ce_mode)) | |
741 | return NULL; | |
742 | ||
743 | if (!should_update_submodules()) | |
744 | return NULL; | |
745 | ||
746 | return submodule_from_path(the_repository, &null_oid, ce->name); | |
747 | } | |
748 | ||
749 | static struct oid_array *submodule_commits(struct string_list *submodules, | |
750 | const char *name) | |
751 | { | |
752 | struct string_list_item *item; | |
753 | ||
754 | item = string_list_insert(submodules, name); | |
755 | if (item->util) | |
756 | return (struct oid_array *) item->util; | |
757 | ||
758 | /* NEEDSWORK: should we have oid_array_init()? */ | |
759 | item->util = xcalloc(1, sizeof(struct oid_array)); | |
760 | return (struct oid_array *) item->util; | |
761 | } | |
762 | ||
763 | struct collect_changed_submodules_cb_data { | |
764 | struct repository *repo; | |
765 | struct string_list *changed; | |
766 | const struct object_id *commit_oid; | |
767 | }; | |
768 | ||
769 | /* | |
770 | * this would normally be two functions: default_name_from_path() and | |
771 | * path_from_default_name(). Since the default name is the same as | |
772 | * the submodule path we can get away with just one function which only | |
773 | * checks whether there is a submodule in the working directory at that | |
774 | * location. | |
775 | */ | |
776 | static const char *default_name_or_path(const char *path_or_name) | |
777 | { | |
778 | int error_code; | |
779 | ||
780 | if (!is_submodule_populated_gently(path_or_name, &error_code)) | |
781 | return NULL; | |
782 | ||
783 | return path_or_name; | |
784 | } | |
785 | ||
786 | static void collect_changed_submodules_cb(struct diff_queue_struct *q, | |
787 | struct diff_options *options, | |
788 | void *data) | |
789 | { | |
790 | struct collect_changed_submodules_cb_data *me = data; | |
791 | struct string_list *changed = me->changed; | |
792 | const struct object_id *commit_oid = me->commit_oid; | |
793 | int i; | |
794 | ||
795 | for (i = 0; i < q->nr; i++) { | |
796 | struct diff_filepair *p = q->queue[i]; | |
797 | struct oid_array *commits; | |
798 | const struct submodule *submodule; | |
799 | const char *name; | |
800 | ||
801 | if (!S_ISGITLINK(p->two->mode)) | |
802 | continue; | |
803 | ||
804 | submodule = submodule_from_path(me->repo, | |
805 | commit_oid, p->two->path); | |
806 | if (submodule) | |
807 | name = submodule->name; | |
808 | else { | |
809 | name = default_name_or_path(p->two->path); | |
810 | /* make sure name does not collide with existing one */ | |
811 | if (name) | |
812 | submodule = submodule_from_name(me->repo, | |
813 | commit_oid, name); | |
814 | if (submodule) { | |
815 | warning("Submodule in commit %s at path: " | |
816 | "'%s' collides with a submodule named " | |
817 | "the same. Skipping it.", | |
818 | oid_to_hex(commit_oid), p->two->path); | |
819 | name = NULL; | |
820 | } | |
821 | } | |
822 | ||
823 | if (!name) | |
824 | continue; | |
825 | ||
826 | commits = submodule_commits(changed, name); | |
827 | oid_array_append(commits, &p->two->oid); | |
828 | } | |
829 | } | |
830 | ||
831 | /* | |
832 | * Collect the paths of submodules in 'changed' which have changed based on | |
833 | * the revisions as specified in 'argv'. Each entry in 'changed' will also | |
834 | * have a corresponding 'struct oid_array' (in the 'util' field) which lists | |
835 | * what the submodule pointers were updated to during the change. | |
836 | */ | |
837 | static void collect_changed_submodules(struct repository *r, | |
838 | struct string_list *changed, | |
839 | struct argv_array *argv) | |
840 | { | |
841 | struct rev_info rev; | |
842 | const struct commit *commit; | |
843 | ||
844 | repo_init_revisions(r, &rev, NULL); | |
845 | setup_revisions(argv->argc, argv->argv, &rev, NULL); | |
846 | if (prepare_revision_walk(&rev)) | |
847 | die("revision walk setup failed"); | |
848 | ||
849 | while ((commit = get_revision(&rev))) { | |
850 | struct rev_info diff_rev; | |
851 | struct collect_changed_submodules_cb_data data; | |
852 | data.repo = r; | |
853 | data.changed = changed; | |
854 | data.commit_oid = &commit->object.oid; | |
855 | ||
856 | repo_init_revisions(r, &diff_rev, NULL); | |
857 | diff_rev.diffopt.output_format |= DIFF_FORMAT_CALLBACK; | |
858 | diff_rev.diffopt.format_callback = collect_changed_submodules_cb; | |
859 | diff_rev.diffopt.format_callback_data = &data; | |
860 | diff_tree_combined_merge(commit, 1, &diff_rev); | |
861 | } | |
862 | ||
863 | reset_revision_walk(); | |
864 | } | |
865 | ||
866 | static void free_submodules_oids(struct string_list *submodules) | |
867 | { | |
868 | struct string_list_item *item; | |
869 | for_each_string_list_item(item, submodules) | |
870 | oid_array_clear((struct oid_array *) item->util); | |
871 | string_list_clear(submodules, 1); | |
872 | } | |
873 | ||
874 | static int has_remote(const char *refname, const struct object_id *oid, | |
875 | int flags, void *cb_data) | |
876 | { | |
877 | return 1; | |
878 | } | |
879 | ||
880 | static int append_oid_to_argv(const struct object_id *oid, void *data) | |
881 | { | |
882 | struct argv_array *argv = data; | |
883 | argv_array_push(argv, oid_to_hex(oid)); | |
884 | return 0; | |
885 | } | |
886 | ||
887 | struct has_commit_data { | |
888 | struct repository *repo; | |
889 | int result; | |
890 | const char *path; | |
891 | }; | |
892 | ||
893 | static int check_has_commit(const struct object_id *oid, void *data) | |
894 | { | |
895 | struct has_commit_data *cb = data; | |
896 | ||
897 | enum object_type type = oid_object_info(cb->repo, oid, NULL); | |
898 | ||
899 | switch (type) { | |
900 | case OBJ_COMMIT: | |
901 | return 0; | |
902 | case OBJ_BAD: | |
903 | /* | |
904 | * Object is missing or invalid. If invalid, an error message | |
905 | * has already been printed. | |
906 | */ | |
907 | cb->result = 0; | |
908 | return 0; | |
909 | default: | |
910 | die(_("submodule entry '%s' (%s) is a %s, not a commit"), | |
911 | cb->path, oid_to_hex(oid), type_name(type)); | |
912 | } | |
913 | } | |
914 | ||
915 | static int submodule_has_commits(struct repository *r, | |
916 | const char *path, | |
917 | struct oid_array *commits) | |
918 | { | |
919 | struct has_commit_data has_commit = { r, 1, path }; | |
920 | ||
921 | /* | |
922 | * Perform a cheap, but incorrect check for the existence of 'commits'. | |
923 | * This is done by adding the submodule's object store to the in-core | |
924 | * object store, and then querying for each commit's existence. If we | |
925 | * do not have the commit object anywhere, there is no chance we have | |
926 | * it in the object store of the correct submodule and have it | |
927 | * reachable from a ref, so we can fail early without spawning rev-list | |
928 | * which is expensive. | |
929 | */ | |
930 | if (add_submodule_odb(path)) | |
931 | return 0; | |
932 | ||
933 | oid_array_for_each_unique(commits, check_has_commit, &has_commit); | |
934 | ||
935 | if (has_commit.result) { | |
936 | /* | |
937 | * Even if the submodule is checked out and the commit is | |
938 | * present, make sure it exists in the submodule's object store | |
939 | * and that it is reachable from a ref. | |
940 | */ | |
941 | struct child_process cp = CHILD_PROCESS_INIT; | |
942 | struct strbuf out = STRBUF_INIT; | |
943 | ||
944 | argv_array_pushl(&cp.args, "rev-list", "-n", "1", NULL); | |
945 | oid_array_for_each_unique(commits, append_oid_to_argv, &cp.args); | |
946 | argv_array_pushl(&cp.args, "--not", "--all", NULL); | |
947 | ||
948 | prepare_submodule_repo_env(&cp.env_array); | |
949 | cp.git_cmd = 1; | |
950 | cp.no_stdin = 1; | |
951 | cp.dir = path; | |
952 | ||
953 | if (capture_command(&cp, &out, GIT_MAX_HEXSZ + 1) || out.len) | |
954 | has_commit.result = 0; | |
955 | ||
956 | strbuf_release(&out); | |
957 | } | |
958 | ||
959 | return has_commit.result; | |
960 | } | |
961 | ||
962 | static int submodule_needs_pushing(struct repository *r, | |
963 | const char *path, | |
964 | struct oid_array *commits) | |
965 | { | |
966 | if (!submodule_has_commits(r, path, commits)) | |
967 | /* | |
968 | * NOTE: We do consider it safe to return "no" here. The | |
969 | * correct answer would be "We do not know" instead of | |
970 | * "No push needed", but it is quite hard to change | |
971 | * the submodule pointer without having the submodule | |
972 | * around. If a user did however change the submodules | |
973 | * without having the submodule around, this indicates | |
974 | * an expert who knows what they are doing or a | |
975 | * maintainer integrating work from other people. In | |
976 | * both cases it should be safe to skip this check. | |
977 | */ | |
978 | return 0; | |
979 | ||
980 | if (for_each_remote_ref_submodule(path, has_remote, NULL) > 0) { | |
981 | struct child_process cp = CHILD_PROCESS_INIT; | |
982 | struct strbuf buf = STRBUF_INIT; | |
983 | int needs_pushing = 0; | |
984 | ||
985 | argv_array_push(&cp.args, "rev-list"); | |
986 | oid_array_for_each_unique(commits, append_oid_to_argv, &cp.args); | |
987 | argv_array_pushl(&cp.args, "--not", "--remotes", "-n", "1" , NULL); | |
988 | ||
989 | prepare_submodule_repo_env(&cp.env_array); | |
990 | cp.git_cmd = 1; | |
991 | cp.no_stdin = 1; | |
992 | cp.out = -1; | |
993 | cp.dir = path; | |
994 | if (start_command(&cp)) | |
995 | die("Could not run 'git rev-list <commits> --not --remotes -n 1' command in submodule %s", | |
996 | path); | |
997 | if (strbuf_read(&buf, cp.out, the_hash_algo->hexsz + 1)) | |
998 | needs_pushing = 1; | |
999 | finish_command(&cp); | |
1000 | close(cp.out); | |
1001 | strbuf_release(&buf); | |
1002 | return needs_pushing; | |
1003 | } | |
1004 | ||
1005 | return 0; | |
1006 | } | |
1007 | ||
1008 | int find_unpushed_submodules(struct repository *r, | |
1009 | struct oid_array *commits, | |
1010 | const char *remotes_name, | |
1011 | struct string_list *needs_pushing) | |
1012 | { | |
1013 | struct string_list submodules = STRING_LIST_INIT_DUP; | |
1014 | struct string_list_item *name; | |
1015 | struct argv_array argv = ARGV_ARRAY_INIT; | |
1016 | ||
1017 | /* argv.argv[0] will be ignored by setup_revisions */ | |
1018 | argv_array_push(&argv, "find_unpushed_submodules"); | |
1019 | oid_array_for_each_unique(commits, append_oid_to_argv, &argv); | |
1020 | argv_array_push(&argv, "--not"); | |
1021 | argv_array_pushf(&argv, "--remotes=%s", remotes_name); | |
1022 | ||
1023 | collect_changed_submodules(r, &submodules, &argv); | |
1024 | ||
1025 | for_each_string_list_item(name, &submodules) { | |
1026 | struct oid_array *commits = name->util; | |
1027 | const struct submodule *submodule; | |
1028 | const char *path = NULL; | |
1029 | ||
1030 | submodule = submodule_from_name(r, &null_oid, name->string); | |
1031 | if (submodule) | |
1032 | path = submodule->path; | |
1033 | else | |
1034 | path = default_name_or_path(name->string); | |
1035 | ||
1036 | if (!path) | |
1037 | continue; | |
1038 | ||
1039 | if (submodule_needs_pushing(r, path, commits)) | |
1040 | string_list_insert(needs_pushing, path); | |
1041 | } | |
1042 | ||
1043 | free_submodules_oids(&submodules); | |
1044 | argv_array_clear(&argv); | |
1045 | ||
1046 | return needs_pushing->nr; | |
1047 | } | |
1048 | ||
1049 | static int push_submodule(const char *path, | |
1050 | const struct remote *remote, | |
1051 | const struct refspec *rs, | |
1052 | const struct string_list *push_options, | |
1053 | int dry_run) | |
1054 | { | |
1055 | if (for_each_remote_ref_submodule(path, has_remote, NULL) > 0) { | |
1056 | struct child_process cp = CHILD_PROCESS_INIT; | |
1057 | argv_array_push(&cp.args, "push"); | |
1058 | if (dry_run) | |
1059 | argv_array_push(&cp.args, "--dry-run"); | |
1060 | ||
1061 | if (push_options && push_options->nr) { | |
1062 | const struct string_list_item *item; | |
1063 | for_each_string_list_item(item, push_options) | |
1064 | argv_array_pushf(&cp.args, "--push-option=%s", | |
1065 | item->string); | |
1066 | } | |
1067 | ||
1068 | if (remote->origin != REMOTE_UNCONFIGURED) { | |
1069 | int i; | |
1070 | argv_array_push(&cp.args, remote->name); | |
1071 | for (i = 0; i < rs->raw_nr; i++) | |
1072 | argv_array_push(&cp.args, rs->raw[i]); | |
1073 | } | |
1074 | ||
1075 | prepare_submodule_repo_env(&cp.env_array); | |
1076 | cp.git_cmd = 1; | |
1077 | cp.no_stdin = 1; | |
1078 | cp.dir = path; | |
1079 | if (run_command(&cp)) | |
1080 | return 0; | |
1081 | close(cp.out); | |
1082 | } | |
1083 | ||
1084 | return 1; | |
1085 | } | |
1086 | ||
1087 | /* | |
1088 | * Perform a check in the submodule to see if the remote and refspec work. | |
1089 | * Die if the submodule can't be pushed. | |
1090 | */ | |
1091 | static void submodule_push_check(const char *path, const char *head, | |
1092 | const struct remote *remote, | |
1093 | const struct refspec *rs) | |
1094 | { | |
1095 | struct child_process cp = CHILD_PROCESS_INIT; | |
1096 | int i; | |
1097 | ||
1098 | argv_array_push(&cp.args, "submodule--helper"); | |
1099 | argv_array_push(&cp.args, "push-check"); | |
1100 | argv_array_push(&cp.args, head); | |
1101 | argv_array_push(&cp.args, remote->name); | |
1102 | ||
1103 | for (i = 0; i < rs->raw_nr; i++) | |
1104 | argv_array_push(&cp.args, rs->raw[i]); | |
1105 | ||
1106 | prepare_submodule_repo_env(&cp.env_array); | |
1107 | cp.git_cmd = 1; | |
1108 | cp.no_stdin = 1; | |
1109 | cp.no_stdout = 1; | |
1110 | cp.dir = path; | |
1111 | ||
1112 | /* | |
1113 | * Simply indicate if 'submodule--helper push-check' failed. | |
1114 | * More detailed error information will be provided by the | |
1115 | * child process. | |
1116 | */ | |
1117 | if (run_command(&cp)) | |
1118 | die("process for submodule '%s' failed", path); | |
1119 | } | |
1120 | ||
1121 | int push_unpushed_submodules(struct repository *r, | |
1122 | struct oid_array *commits, | |
1123 | const struct remote *remote, | |
1124 | const struct refspec *rs, | |
1125 | const struct string_list *push_options, | |
1126 | int dry_run) | |
1127 | { | |
1128 | int i, ret = 1; | |
1129 | struct string_list needs_pushing = STRING_LIST_INIT_DUP; | |
1130 | ||
1131 | if (!find_unpushed_submodules(r, commits, | |
1132 | remote->name, &needs_pushing)) | |
1133 | return 1; | |
1134 | ||
1135 | /* | |
1136 | * Verify that the remote and refspec can be propagated to all | |
1137 | * submodules. This check can be skipped if the remote and refspec | |
1138 | * won't be propagated due to the remote being unconfigured (e.g. a URL | |
1139 | * instead of a remote name). | |
1140 | */ | |
1141 | if (remote->origin != REMOTE_UNCONFIGURED) { | |
1142 | char *head; | |
1143 | struct object_id head_oid; | |
1144 | ||
1145 | head = resolve_refdup("HEAD", 0, &head_oid, NULL); | |
1146 | if (!head) | |
1147 | die(_("Failed to resolve HEAD as a valid ref.")); | |
1148 | ||
1149 | for (i = 0; i < needs_pushing.nr; i++) | |
1150 | submodule_push_check(needs_pushing.items[i].string, | |
1151 | head, remote, rs); | |
1152 | free(head); | |
1153 | } | |
1154 | ||
1155 | /* Actually push the submodules */ | |
1156 | for (i = 0; i < needs_pushing.nr; i++) { | |
1157 | const char *path = needs_pushing.items[i].string; | |
1158 | fprintf(stderr, "Pushing submodule '%s'\n", path); | |
1159 | if (!push_submodule(path, remote, rs, | |
1160 | push_options, dry_run)) { | |
1161 | fprintf(stderr, "Unable to push submodule '%s'\n", path); | |
1162 | ret = 0; | |
1163 | } | |
1164 | } | |
1165 | ||
1166 | string_list_clear(&needs_pushing, 0); | |
1167 | ||
1168 | return ret; | |
1169 | } | |
1170 | ||
1171 | static int append_oid_to_array(const char *ref, const struct object_id *oid, | |
1172 | int flags, void *data) | |
1173 | { | |
1174 | struct oid_array *array = data; | |
1175 | oid_array_append(array, oid); | |
1176 | return 0; | |
1177 | } | |
1178 | ||
1179 | void check_for_new_submodule_commits(struct object_id *oid) | |
1180 | { | |
1181 | if (!initialized_fetch_ref_tips) { | |
1182 | for_each_ref(append_oid_to_array, &ref_tips_before_fetch); | |
1183 | initialized_fetch_ref_tips = 1; | |
1184 | } | |
1185 | ||
1186 | oid_array_append(&ref_tips_after_fetch, oid); | |
1187 | } | |
1188 | ||
1189 | static void calculate_changed_submodule_paths(struct repository *r, | |
1190 | struct string_list *changed_submodule_names) | |
1191 | { | |
1192 | struct argv_array argv = ARGV_ARRAY_INIT; | |
1193 | struct string_list_item *name; | |
1194 | ||
1195 | /* No need to check if there are no submodules configured */ | |
1196 | if (!submodule_from_path(r, NULL, NULL)) | |
1197 | return; | |
1198 | ||
1199 | argv_array_push(&argv, "--"); /* argv[0] program name */ | |
1200 | oid_array_for_each_unique(&ref_tips_after_fetch, | |
1201 | append_oid_to_argv, &argv); | |
1202 | argv_array_push(&argv, "--not"); | |
1203 | oid_array_for_each_unique(&ref_tips_before_fetch, | |
1204 | append_oid_to_argv, &argv); | |
1205 | ||
1206 | /* | |
1207 | * Collect all submodules (whether checked out or not) for which new | |
1208 | * commits have been recorded upstream in "changed_submodule_names". | |
1209 | */ | |
1210 | collect_changed_submodules(r, changed_submodule_names, &argv); | |
1211 | ||
1212 | for_each_string_list_item(name, changed_submodule_names) { | |
1213 | struct oid_array *commits = name->util; | |
1214 | const struct submodule *submodule; | |
1215 | const char *path = NULL; | |
1216 | ||
1217 | submodule = submodule_from_name(r, &null_oid, name->string); | |
1218 | if (submodule) | |
1219 | path = submodule->path; | |
1220 | else | |
1221 | path = default_name_or_path(name->string); | |
1222 | ||
1223 | if (!path) | |
1224 | continue; | |
1225 | ||
1226 | if (submodule_has_commits(r, path, commits)) { | |
1227 | oid_array_clear(commits); | |
1228 | *name->string = '\0'; | |
1229 | } | |
1230 | } | |
1231 | ||
1232 | string_list_remove_empty_items(changed_submodule_names, 1); | |
1233 | ||
1234 | argv_array_clear(&argv); | |
1235 | oid_array_clear(&ref_tips_before_fetch); | |
1236 | oid_array_clear(&ref_tips_after_fetch); | |
1237 | initialized_fetch_ref_tips = 0; | |
1238 | } | |
1239 | ||
1240 | int submodule_touches_in_range(struct repository *r, | |
1241 | struct object_id *excl_oid, | |
1242 | struct object_id *incl_oid) | |
1243 | { | |
1244 | struct string_list subs = STRING_LIST_INIT_DUP; | |
1245 | struct argv_array args = ARGV_ARRAY_INIT; | |
1246 | int ret; | |
1247 | ||
1248 | /* No need to check if there are no submodules configured */ | |
1249 | if (!submodule_from_path(r, NULL, NULL)) | |
1250 | return 0; | |
1251 | ||
1252 | argv_array_push(&args, "--"); /* args[0] program name */ | |
1253 | argv_array_push(&args, oid_to_hex(incl_oid)); | |
1254 | if (!is_null_oid(excl_oid)) { | |
1255 | argv_array_push(&args, "--not"); | |
1256 | argv_array_push(&args, oid_to_hex(excl_oid)); | |
1257 | } | |
1258 | ||
1259 | collect_changed_submodules(r, &subs, &args); | |
1260 | ret = subs.nr; | |
1261 | ||
1262 | argv_array_clear(&args); | |
1263 | ||
1264 | free_submodules_oids(&subs); | |
1265 | return ret; | |
1266 | } | |
1267 | ||
1268 | struct submodule_parallel_fetch { | |
1269 | int count; | |
1270 | struct argv_array args; | |
1271 | struct repository *r; | |
1272 | const char *prefix; | |
1273 | int command_line_option; | |
1274 | int default_option; | |
1275 | int quiet; | |
1276 | int result; | |
1277 | ||
1278 | struct string_list changed_submodule_names; | |
1279 | ||
1280 | /* Pending fetches by OIDs */ | |
1281 | struct fetch_task **oid_fetch_tasks; | |
1282 | int oid_fetch_tasks_nr, oid_fetch_tasks_alloc; | |
1283 | }; | |
1284 | #define SPF_INIT {0, ARGV_ARRAY_INIT, NULL, NULL, 0, 0, 0, 0, \ | |
1285 | STRING_LIST_INIT_DUP, \ | |
1286 | NULL, 0, 0} | |
1287 | ||
1288 | static int get_fetch_recurse_config(const struct submodule *submodule, | |
1289 | struct submodule_parallel_fetch *spf) | |
1290 | { | |
1291 | if (spf->command_line_option != RECURSE_SUBMODULES_DEFAULT) | |
1292 | return spf->command_line_option; | |
1293 | ||
1294 | if (submodule) { | |
1295 | char *key; | |
1296 | const char *value; | |
1297 | ||
1298 | int fetch_recurse = submodule->fetch_recurse; | |
1299 | key = xstrfmt("submodule.%s.fetchRecurseSubmodules", submodule->name); | |
1300 | if (!repo_config_get_string_const(spf->r, key, &value)) { | |
1301 | fetch_recurse = parse_fetch_recurse_submodules_arg(key, value); | |
1302 | } | |
1303 | free(key); | |
1304 | ||
1305 | if (fetch_recurse != RECURSE_SUBMODULES_NONE) | |
1306 | /* local config overrules everything except commandline */ | |
1307 | return fetch_recurse; | |
1308 | } | |
1309 | ||
1310 | return spf->default_option; | |
1311 | } | |
1312 | ||
1313 | /* | |
1314 | * Fetch in progress (if callback data) or | |
1315 | * pending (if in oid_fetch_tasks in struct submodule_parallel_fetch) | |
1316 | */ | |
1317 | struct fetch_task { | |
1318 | struct repository *repo; | |
1319 | const struct submodule *sub; | |
1320 | unsigned free_sub : 1; /* Do we need to free the submodule? */ | |
1321 | ||
1322 | struct oid_array *commits; /* Ensure these commits are fetched */ | |
1323 | }; | |
1324 | ||
1325 | /** | |
1326 | * When a submodule is not defined in .gitmodules, we cannot access it | |
1327 | * via the regular submodule-config. Create a fake submodule, which we can | |
1328 | * work on. | |
1329 | */ | |
1330 | static const struct submodule *get_non_gitmodules_submodule(const char *path) | |
1331 | { | |
1332 | struct submodule *ret = NULL; | |
1333 | const char *name = default_name_or_path(path); | |
1334 | ||
1335 | if (!name) | |
1336 | return NULL; | |
1337 | ||
1338 | ret = xmalloc(sizeof(*ret)); | |
1339 | memset(ret, 0, sizeof(*ret)); | |
1340 | ret->path = name; | |
1341 | ret->name = name; | |
1342 | ||
1343 | return (const struct submodule *) ret; | |
1344 | } | |
1345 | ||
1346 | static struct fetch_task *fetch_task_create(struct repository *r, | |
1347 | const char *path) | |
1348 | { | |
1349 | struct fetch_task *task = xmalloc(sizeof(*task)); | |
1350 | memset(task, 0, sizeof(*task)); | |
1351 | ||
1352 | task->sub = submodule_from_path(r, &null_oid, path); | |
1353 | if (!task->sub) { | |
1354 | /* | |
1355 | * No entry in .gitmodules? Technically not a submodule, | |
1356 | * but historically we supported repositories that happen to be | |
1357 | * in-place where a gitlink is. Keep supporting them. | |
1358 | */ | |
1359 | task->sub = get_non_gitmodules_submodule(path); | |
1360 | if (!task->sub) { | |
1361 | free(task); | |
1362 | return NULL; | |
1363 | } | |
1364 | ||
1365 | task->free_sub = 1; | |
1366 | } | |
1367 | ||
1368 | return task; | |
1369 | } | |
1370 | ||
1371 | static void fetch_task_release(struct fetch_task *p) | |
1372 | { | |
1373 | if (p->free_sub) | |
1374 | free((void*)p->sub); | |
1375 | p->free_sub = 0; | |
1376 | p->sub = NULL; | |
1377 | ||
1378 | if (p->repo) | |
1379 | repo_clear(p->repo); | |
1380 | FREE_AND_NULL(p->repo); | |
1381 | } | |
1382 | ||
1383 | static struct repository *get_submodule_repo_for(struct repository *r, | |
1384 | const struct submodule *sub) | |
1385 | { | |
1386 | struct repository *ret = xmalloc(sizeof(*ret)); | |
1387 | ||
1388 | if (repo_submodule_init(ret, r, sub)) { | |
1389 | /* | |
1390 | * No entry in .gitmodules? Technically not a submodule, | |
1391 | * but historically we supported repositories that happen to be | |
1392 | * in-place where a gitlink is. Keep supporting them. | |
1393 | */ | |
1394 | struct strbuf gitdir = STRBUF_INIT; | |
1395 | strbuf_repo_worktree_path(&gitdir, r, "%s/.git", sub->path); | |
1396 | if (repo_init(ret, gitdir.buf, NULL)) { | |
1397 | strbuf_release(&gitdir); | |
1398 | free(ret); | |
1399 | return NULL; | |
1400 | } | |
1401 | strbuf_release(&gitdir); | |
1402 | } | |
1403 | ||
1404 | return ret; | |
1405 | } | |
1406 | ||
1407 | static int get_next_submodule(struct child_process *cp, | |
1408 | struct strbuf *err, void *data, void **task_cb) | |
1409 | { | |
1410 | struct submodule_parallel_fetch *spf = data; | |
1411 | ||
1412 | for (; spf->count < spf->r->index->cache_nr; spf->count++) { | |
1413 | const struct cache_entry *ce = spf->r->index->cache[spf->count]; | |
1414 | const char *default_argv; | |
1415 | struct fetch_task *task; | |
1416 | ||
1417 | if (!S_ISGITLINK(ce->ce_mode)) | |
1418 | continue; | |
1419 | ||
1420 | task = fetch_task_create(spf->r, ce->name); | |
1421 | if (!task) | |
1422 | continue; | |
1423 | ||
1424 | switch (get_fetch_recurse_config(task->sub, spf)) | |
1425 | { | |
1426 | default: | |
1427 | case RECURSE_SUBMODULES_DEFAULT: | |
1428 | case RECURSE_SUBMODULES_ON_DEMAND: | |
1429 | if (!task->sub || | |
1430 | !string_list_lookup( | |
1431 | &spf->changed_submodule_names, | |
1432 | task->sub->name)) | |
1433 | continue; | |
1434 | default_argv = "on-demand"; | |
1435 | break; | |
1436 | case RECURSE_SUBMODULES_ON: | |
1437 | default_argv = "yes"; | |
1438 | break; | |
1439 | case RECURSE_SUBMODULES_OFF: | |
1440 | continue; | |
1441 | } | |
1442 | ||
1443 | task->repo = get_submodule_repo_for(spf->r, task->sub); | |
1444 | if (task->repo) { | |
1445 | struct strbuf submodule_prefix = STRBUF_INIT; | |
1446 | child_process_init(cp); | |
1447 | cp->dir = task->repo->gitdir; | |
1448 | prepare_submodule_repo_env_in_gitdir(&cp->env_array); | |
1449 | cp->git_cmd = 1; | |
1450 | if (!spf->quiet) | |
1451 | strbuf_addf(err, "Fetching submodule %s%s\n", | |
1452 | spf->prefix, ce->name); | |
1453 | argv_array_init(&cp->args); | |
1454 | argv_array_pushv(&cp->args, spf->args.argv); | |
1455 | argv_array_push(&cp->args, default_argv); | |
1456 | argv_array_push(&cp->args, "--submodule-prefix"); | |
1457 | ||
1458 | strbuf_addf(&submodule_prefix, "%s%s/", | |
1459 | spf->prefix, | |
1460 | task->sub->path); | |
1461 | argv_array_push(&cp->args, submodule_prefix.buf); | |
1462 | ||
1463 | spf->count++; | |
1464 | *task_cb = task; | |
1465 | ||
1466 | strbuf_release(&submodule_prefix); | |
1467 | return 1; | |
1468 | } else { | |
1469 | ||
1470 | fetch_task_release(task); | |
1471 | free(task); | |
1472 | ||
1473 | /* | |
1474 | * An empty directory is normal, | |
1475 | * the submodule is not initialized | |
1476 | */ | |
1477 | if (S_ISGITLINK(ce->ce_mode) && | |
1478 | !is_empty_dir(ce->name)) { | |
1479 | spf->result = 1; | |
1480 | strbuf_addf(err, | |
1481 | _("Could not access submodule '%s'"), | |
1482 | ce->name); | |
1483 | } | |
1484 | } | |
1485 | } | |
1486 | ||
1487 | if (spf->oid_fetch_tasks_nr) { | |
1488 | struct fetch_task *task = | |
1489 | spf->oid_fetch_tasks[spf->oid_fetch_tasks_nr - 1]; | |
1490 | struct strbuf submodule_prefix = STRBUF_INIT; | |
1491 | spf->oid_fetch_tasks_nr--; | |
1492 | ||
1493 | strbuf_addf(&submodule_prefix, "%s%s/", | |
1494 | spf->prefix, task->sub->path); | |
1495 | ||
1496 | child_process_init(cp); | |
1497 | prepare_submodule_repo_env_in_gitdir(&cp->env_array); | |
1498 | cp->git_cmd = 1; | |
1499 | cp->dir = task->repo->gitdir; | |
1500 | ||
1501 | argv_array_init(&cp->args); | |
1502 | argv_array_pushv(&cp->args, spf->args.argv); | |
1503 | argv_array_push(&cp->args, "on-demand"); | |
1504 | argv_array_push(&cp->args, "--submodule-prefix"); | |
1505 | argv_array_push(&cp->args, submodule_prefix.buf); | |
1506 | ||
1507 | /* NEEDSWORK: have get_default_remote from submodule--helper */ | |
1508 | argv_array_push(&cp->args, "origin"); | |
1509 | oid_array_for_each_unique(task->commits, | |
1510 | append_oid_to_argv, &cp->args); | |
1511 | ||
1512 | *task_cb = task; | |
1513 | strbuf_release(&submodule_prefix); | |
1514 | return 1; | |
1515 | } | |
1516 | ||
1517 | return 0; | |
1518 | } | |
1519 | ||
1520 | static int fetch_start_failure(struct strbuf *err, | |
1521 | void *cb, void *task_cb) | |
1522 | { | |
1523 | struct submodule_parallel_fetch *spf = cb; | |
1524 | struct fetch_task *task = task_cb; | |
1525 | ||
1526 | spf->result = 1; | |
1527 | ||
1528 | fetch_task_release(task); | |
1529 | return 0; | |
1530 | } | |
1531 | ||
1532 | static int commit_missing_in_sub(const struct object_id *oid, void *data) | |
1533 | { | |
1534 | struct repository *subrepo = data; | |
1535 | ||
1536 | enum object_type type = oid_object_info(subrepo, oid, NULL); | |
1537 | ||
1538 | return type != OBJ_COMMIT; | |
1539 | } | |
1540 | ||
1541 | static int fetch_finish(int retvalue, struct strbuf *err, | |
1542 | void *cb, void *task_cb) | |
1543 | { | |
1544 | struct submodule_parallel_fetch *spf = cb; | |
1545 | struct fetch_task *task = task_cb; | |
1546 | ||
1547 | struct string_list_item *it; | |
1548 | struct oid_array *commits; | |
1549 | ||
1550 | if (retvalue) | |
1551 | /* | |
1552 | * NEEDSWORK: This indicates that the overall fetch | |
1553 | * failed, even though there may be a subsequent fetch | |
1554 | * by commit hash that might work. It may be a good | |
1555 | * idea to not indicate failure in this case, and only | |
1556 | * indicate failure if the subsequent fetch fails. | |
1557 | */ | |
1558 | spf->result = 1; | |
1559 | ||
1560 | if (!task || !task->sub) | |
1561 | BUG("callback cookie bogus"); | |
1562 | ||
1563 | /* Is this the second time we process this submodule? */ | |
1564 | if (task->commits) | |
1565 | goto out; | |
1566 | ||
1567 | it = string_list_lookup(&spf->changed_submodule_names, task->sub->name); | |
1568 | if (!it) | |
1569 | /* Could be an unchanged submodule, not contained in the list */ | |
1570 | goto out; | |
1571 | ||
1572 | commits = it->util; | |
1573 | oid_array_filter(commits, | |
1574 | commit_missing_in_sub, | |
1575 | task->repo); | |
1576 | ||
1577 | /* Are there commits we want, but do not exist? */ | |
1578 | if (commits->nr) { | |
1579 | task->commits = commits; | |
1580 | ALLOC_GROW(spf->oid_fetch_tasks, | |
1581 | spf->oid_fetch_tasks_nr + 1, | |
1582 | spf->oid_fetch_tasks_alloc); | |
1583 | spf->oid_fetch_tasks[spf->oid_fetch_tasks_nr] = task; | |
1584 | spf->oid_fetch_tasks_nr++; | |
1585 | return 0; | |
1586 | } | |
1587 | ||
1588 | out: | |
1589 | fetch_task_release(task); | |
1590 | ||
1591 | return 0; | |
1592 | } | |
1593 | ||
1594 | int fetch_populated_submodules(struct repository *r, | |
1595 | const struct argv_array *options, | |
1596 | const char *prefix, int command_line_option, | |
1597 | int default_option, | |
1598 | int quiet, int max_parallel_jobs) | |
1599 | { | |
1600 | int i; | |
1601 | struct submodule_parallel_fetch spf = SPF_INIT; | |
1602 | ||
1603 | spf.r = r; | |
1604 | spf.command_line_option = command_line_option; | |
1605 | spf.default_option = default_option; | |
1606 | spf.quiet = quiet; | |
1607 | spf.prefix = prefix; | |
1608 | ||
1609 | if (!r->worktree) | |
1610 | goto out; | |
1611 | ||
1612 | if (repo_read_index(r) < 0) | |
1613 | die("index file corrupt"); | |
1614 | ||
1615 | argv_array_push(&spf.args, "fetch"); | |
1616 | for (i = 0; i < options->argc; i++) | |
1617 | argv_array_push(&spf.args, options->argv[i]); | |
1618 | argv_array_push(&spf.args, "--recurse-submodules-default"); | |
1619 | /* default value, "--submodule-prefix" and its value are added later */ | |
1620 | ||
1621 | calculate_changed_submodule_paths(r, &spf.changed_submodule_names); | |
1622 | string_list_sort(&spf.changed_submodule_names); | |
1623 | run_processes_parallel_tr2(max_parallel_jobs, | |
1624 | get_next_submodule, | |
1625 | fetch_start_failure, | |
1626 | fetch_finish, | |
1627 | &spf, | |
1628 | "submodule", "parallel/fetch"); | |
1629 | ||
1630 | argv_array_clear(&spf.args); | |
1631 | out: | |
1632 | free_submodules_oids(&spf.changed_submodule_names); | |
1633 | return spf.result; | |
1634 | } | |
1635 | ||
1636 | unsigned is_submodule_modified(const char *path, int ignore_untracked) | |
1637 | { | |
1638 | struct child_process cp = CHILD_PROCESS_INIT; | |
1639 | struct strbuf buf = STRBUF_INIT; | |
1640 | FILE *fp; | |
1641 | unsigned dirty_submodule = 0; | |
1642 | const char *git_dir; | |
1643 | int ignore_cp_exit_code = 0; | |
1644 | ||
1645 | strbuf_addf(&buf, "%s/.git", path); | |
1646 | git_dir = read_gitfile(buf.buf); | |
1647 | if (!git_dir) | |
1648 | git_dir = buf.buf; | |
1649 | if (!is_git_directory(git_dir)) { | |
1650 | if (is_directory(git_dir)) | |
1651 | die(_("'%s' not recognized as a git repository"), git_dir); | |
1652 | strbuf_release(&buf); | |
1653 | /* The submodule is not checked out, so it is not modified */ | |
1654 | return 0; | |
1655 | } | |
1656 | strbuf_reset(&buf); | |
1657 | ||
1658 | argv_array_pushl(&cp.args, "status", "--porcelain=2", NULL); | |
1659 | if (ignore_untracked) | |
1660 | argv_array_push(&cp.args, "-uno"); | |
1661 | ||
1662 | prepare_submodule_repo_env(&cp.env_array); | |
1663 | cp.git_cmd = 1; | |
1664 | cp.no_stdin = 1; | |
1665 | cp.out = -1; | |
1666 | cp.dir = path; | |
1667 | if (start_command(&cp)) | |
1668 | die("Could not run 'git status --porcelain=2' in submodule %s", path); | |
1669 | ||
1670 | fp = xfdopen(cp.out, "r"); | |
1671 | while (strbuf_getwholeline(&buf, fp, '\n') != EOF) { | |
1672 | /* regular untracked files */ | |
1673 | if (buf.buf[0] == '?') | |
1674 | dirty_submodule |= DIRTY_SUBMODULE_UNTRACKED; | |
1675 | ||
1676 | if (buf.buf[0] == 'u' || | |
1677 | buf.buf[0] == '1' || | |
1678 | buf.buf[0] == '2') { | |
1679 | /* T = line type, XY = status, SSSS = submodule state */ | |
1680 | if (buf.len < strlen("T XY SSSS")) | |
1681 | BUG("invalid status --porcelain=2 line %s", | |
1682 | buf.buf); | |
1683 | ||
1684 | if (buf.buf[5] == 'S' && buf.buf[8] == 'U') | |
1685 | /* nested untracked file */ | |
1686 | dirty_submodule |= DIRTY_SUBMODULE_UNTRACKED; | |
1687 | ||
1688 | if (buf.buf[0] == 'u' || | |
1689 | buf.buf[0] == '2' || | |
1690 | memcmp(buf.buf + 5, "S..U", 4)) | |
1691 | /* other change */ | |
1692 | dirty_submodule |= DIRTY_SUBMODULE_MODIFIED; | |
1693 | } | |
1694 | ||
1695 | if ((dirty_submodule & DIRTY_SUBMODULE_MODIFIED) && | |
1696 | ((dirty_submodule & DIRTY_SUBMODULE_UNTRACKED) || | |
1697 | ignore_untracked)) { | |
1698 | /* | |
1699 | * We're not interested in any further information from | |
1700 | * the child any more, neither output nor its exit code. | |
1701 | */ | |
1702 | ignore_cp_exit_code = 1; | |
1703 | break; | |
1704 | } | |
1705 | } | |
1706 | fclose(fp); | |
1707 | ||
1708 | if (finish_command(&cp) && !ignore_cp_exit_code) | |
1709 | die("'git status --porcelain=2' failed in submodule %s", path); | |
1710 | ||
1711 | strbuf_release(&buf); | |
1712 | return dirty_submodule; | |
1713 | } | |
1714 | ||
1715 | int submodule_uses_gitfile(const char *path) | |
1716 | { | |
1717 | struct child_process cp = CHILD_PROCESS_INIT; | |
1718 | const char *argv[] = { | |
1719 | "submodule", | |
1720 | "foreach", | |
1721 | "--quiet", | |
1722 | "--recursive", | |
1723 | "test -f .git", | |
1724 | NULL, | |
1725 | }; | |
1726 | struct strbuf buf = STRBUF_INIT; | |
1727 | const char *git_dir; | |
1728 | ||
1729 | strbuf_addf(&buf, "%s/.git", path); | |
1730 | git_dir = read_gitfile(buf.buf); | |
1731 | if (!git_dir) { | |
1732 | strbuf_release(&buf); | |
1733 | return 0; | |
1734 | } | |
1735 | strbuf_release(&buf); | |
1736 | ||
1737 | /* Now test that all nested submodules use a gitfile too */ | |
1738 | cp.argv = argv; | |
1739 | prepare_submodule_repo_env(&cp.env_array); | |
1740 | cp.git_cmd = 1; | |
1741 | cp.no_stdin = 1; | |
1742 | cp.no_stderr = 1; | |
1743 | cp.no_stdout = 1; | |
1744 | cp.dir = path; | |
1745 | if (run_command(&cp)) | |
1746 | return 0; | |
1747 | ||
1748 | return 1; | |
1749 | } | |
1750 | ||
1751 | /* | |
1752 | * Check if it is a bad idea to remove a submodule, i.e. if we'd lose data | |
1753 | * when doing so. | |
1754 | * | |
1755 | * Return 1 if we'd lose data, return 0 if the removal is fine, | |
1756 | * and negative values for errors. | |
1757 | */ | |
1758 | int bad_to_remove_submodule(const char *path, unsigned flags) | |
1759 | { | |
1760 | ssize_t len; | |
1761 | struct child_process cp = CHILD_PROCESS_INIT; | |
1762 | struct strbuf buf = STRBUF_INIT; | |
1763 | int ret = 0; | |
1764 | ||
1765 | if (!file_exists(path) || is_empty_dir(path)) | |
1766 | return 0; | |
1767 | ||
1768 | if (!submodule_uses_gitfile(path)) | |
1769 | return 1; | |
1770 | ||
1771 | argv_array_pushl(&cp.args, "status", "--porcelain", | |
1772 | "--ignore-submodules=none", NULL); | |
1773 | ||
1774 | if (flags & SUBMODULE_REMOVAL_IGNORE_UNTRACKED) | |
1775 | argv_array_push(&cp.args, "-uno"); | |
1776 | else | |
1777 | argv_array_push(&cp.args, "-uall"); | |
1778 | ||
1779 | if (!(flags & SUBMODULE_REMOVAL_IGNORE_IGNORED_UNTRACKED)) | |
1780 | argv_array_push(&cp.args, "--ignored"); | |
1781 | ||
1782 | prepare_submodule_repo_env(&cp.env_array); | |
1783 | cp.git_cmd = 1; | |
1784 | cp.no_stdin = 1; | |
1785 | cp.out = -1; | |
1786 | cp.dir = path; | |
1787 | if (start_command(&cp)) { | |
1788 | if (flags & SUBMODULE_REMOVAL_DIE_ON_ERROR) | |
1789 | die(_("could not start 'git status' in submodule '%s'"), | |
1790 | path); | |
1791 | ret = -1; | |
1792 | goto out; | |
1793 | } | |
1794 | ||
1795 | len = strbuf_read(&buf, cp.out, 1024); | |
1796 | if (len > 2) | |
1797 | ret = 1; | |
1798 | close(cp.out); | |
1799 | ||
1800 | if (finish_command(&cp)) { | |
1801 | if (flags & SUBMODULE_REMOVAL_DIE_ON_ERROR) | |
1802 | die(_("could not run 'git status' in submodule '%s'"), | |
1803 | path); | |
1804 | ret = -1; | |
1805 | } | |
1806 | out: | |
1807 | strbuf_release(&buf); | |
1808 | return ret; | |
1809 | } | |
1810 | ||
1811 | void submodule_unset_core_worktree(const struct submodule *sub) | |
1812 | { | |
1813 | char *config_path = xstrfmt("%s/modules/%s/config", | |
1814 | get_git_common_dir(), sub->name); | |
1815 | ||
1816 | if (git_config_set_in_file_gently(config_path, "core.worktree", NULL)) | |
1817 | warning(_("Could not unset core.worktree setting in submodule '%s'"), | |
1818 | sub->path); | |
1819 | ||
1820 | free(config_path); | |
1821 | } | |
1822 | ||
1823 | static const char *get_super_prefix_or_empty(void) | |
1824 | { | |
1825 | const char *s = get_super_prefix(); | |
1826 | if (!s) | |
1827 | s = ""; | |
1828 | return s; | |
1829 | } | |
1830 | ||
1831 | static int submodule_has_dirty_index(const struct submodule *sub) | |
1832 | { | |
1833 | struct child_process cp = CHILD_PROCESS_INIT; | |
1834 | ||
1835 | prepare_submodule_repo_env(&cp.env_array); | |
1836 | ||
1837 | cp.git_cmd = 1; | |
1838 | argv_array_pushl(&cp.args, "diff-index", "--quiet", | |
1839 | "--cached", "HEAD", NULL); | |
1840 | cp.no_stdin = 1; | |
1841 | cp.no_stdout = 1; | |
1842 | cp.dir = sub->path; | |
1843 | if (start_command(&cp)) | |
1844 | die("could not recurse into submodule '%s'", sub->path); | |
1845 | ||
1846 | return finish_command(&cp); | |
1847 | } | |
1848 | ||
1849 | static void submodule_reset_index(const char *path) | |
1850 | { | |
1851 | struct child_process cp = CHILD_PROCESS_INIT; | |
1852 | prepare_submodule_repo_env(&cp.env_array); | |
1853 | ||
1854 | cp.git_cmd = 1; | |
1855 | cp.no_stdin = 1; | |
1856 | cp.dir = path; | |
1857 | ||
1858 | argv_array_pushf(&cp.args, "--super-prefix=%s%s/", | |
1859 | get_super_prefix_or_empty(), path); | |
1860 | argv_array_pushl(&cp.args, "read-tree", "-u", "--reset", NULL); | |
1861 | ||
1862 | argv_array_push(&cp.args, empty_tree_oid_hex()); | |
1863 | ||
1864 | if (run_command(&cp)) | |
1865 | die("could not reset submodule index"); | |
1866 | } | |
1867 | ||
1868 | /** | |
1869 | * Moves a submodule at a given path from a given head to another new head. | |
1870 | * For edge cases (a submodule coming into existence or removing a submodule) | |
1871 | * pass NULL for old or new respectively. | |
1872 | */ | |
1873 | int submodule_move_head(const char *path, | |
1874 | const char *old_head, | |
1875 | const char *new_head, | |
1876 | unsigned flags) | |
1877 | { | |
1878 | int ret = 0; | |
1879 | struct child_process cp = CHILD_PROCESS_INIT; | |
1880 | const struct submodule *sub; | |
1881 | int *error_code_ptr, error_code; | |
1882 | ||
1883 | if (!is_submodule_active(the_repository, path)) | |
1884 | return 0; | |
1885 | ||
1886 | if (flags & SUBMODULE_MOVE_HEAD_FORCE) | |
1887 | /* | |
1888 | * Pass non NULL pointer to is_submodule_populated_gently | |
1889 | * to prevent die()-ing. We'll use connect_work_tree_and_git_dir | |
1890 | * to fixup the submodule in the force case later. | |
1891 | */ | |
1892 | error_code_ptr = &error_code; | |
1893 | else | |
1894 | error_code_ptr = NULL; | |
1895 | ||
1896 | if (old_head && !is_submodule_populated_gently(path, error_code_ptr)) | |
1897 | return 0; | |
1898 | ||
1899 | sub = submodule_from_path(the_repository, &null_oid, path); | |
1900 | ||
1901 | if (!sub) | |
1902 | BUG("could not get submodule information for '%s'", path); | |
1903 | ||
1904 | if (old_head && !(flags & SUBMODULE_MOVE_HEAD_FORCE)) { | |
1905 | /* Check if the submodule has a dirty index. */ | |
1906 | if (submodule_has_dirty_index(sub)) | |
1907 | return error(_("submodule '%s' has dirty index"), path); | |
1908 | } | |
1909 | ||
1910 | if (!(flags & SUBMODULE_MOVE_HEAD_DRY_RUN)) { | |
1911 | if (old_head) { | |
1912 | if (!submodule_uses_gitfile(path)) | |
1913 | absorb_git_dir_into_superproject("", path, | |
1914 | ABSORB_GITDIR_RECURSE_SUBMODULES); | |
1915 | } else { | |
1916 | char *gitdir = xstrfmt("%s/modules/%s", | |
1917 | get_git_common_dir(), sub->name); | |
1918 | connect_work_tree_and_git_dir(path, gitdir, 0); | |
1919 | free(gitdir); | |
1920 | ||
1921 | /* make sure the index is clean as well */ | |
1922 | submodule_reset_index(path); | |
1923 | } | |
1924 | ||
1925 | if (old_head && (flags & SUBMODULE_MOVE_HEAD_FORCE)) { | |
1926 | char *gitdir = xstrfmt("%s/modules/%s", | |
1927 | get_git_common_dir(), sub->name); | |
1928 | connect_work_tree_and_git_dir(path, gitdir, 1); | |
1929 | free(gitdir); | |
1930 | } | |
1931 | } | |
1932 | ||
1933 | prepare_submodule_repo_env(&cp.env_array); | |
1934 | ||
1935 | cp.git_cmd = 1; | |
1936 | cp.no_stdin = 1; | |
1937 | cp.dir = path; | |
1938 | ||
1939 | argv_array_pushf(&cp.args, "--super-prefix=%s%s/", | |
1940 | get_super_prefix_or_empty(), path); | |
1941 | argv_array_pushl(&cp.args, "read-tree", "--recurse-submodules", NULL); | |
1942 | ||
1943 | if (flags & SUBMODULE_MOVE_HEAD_DRY_RUN) | |
1944 | argv_array_push(&cp.args, "-n"); | |
1945 | else | |
1946 | argv_array_push(&cp.args, "-u"); | |
1947 | ||
1948 | if (flags & SUBMODULE_MOVE_HEAD_FORCE) | |
1949 | argv_array_push(&cp.args, "--reset"); | |
1950 | else | |
1951 | argv_array_push(&cp.args, "-m"); | |
1952 | ||
1953 | if (!(flags & SUBMODULE_MOVE_HEAD_FORCE)) | |
1954 | argv_array_push(&cp.args, old_head ? old_head : empty_tree_oid_hex()); | |
1955 | ||
1956 | argv_array_push(&cp.args, new_head ? new_head : empty_tree_oid_hex()); | |
1957 | ||
1958 | if (run_command(&cp)) { | |
1959 | ret = error(_("Submodule '%s' could not be updated."), path); | |
1960 | goto out; | |
1961 | } | |
1962 | ||
1963 | if (!(flags & SUBMODULE_MOVE_HEAD_DRY_RUN)) { | |
1964 | if (new_head) { | |
1965 | child_process_init(&cp); | |
1966 | /* also set the HEAD accordingly */ | |
1967 | cp.git_cmd = 1; | |
1968 | cp.no_stdin = 1; | |
1969 | cp.dir = path; | |
1970 | ||
1971 | prepare_submodule_repo_env(&cp.env_array); | |
1972 | argv_array_pushl(&cp.args, "update-ref", "HEAD", | |
1973 | "--no-deref", new_head, NULL); | |
1974 | ||
1975 | if (run_command(&cp)) { | |
1976 | ret = -1; | |
1977 | goto out; | |
1978 | } | |
1979 | } else { | |
1980 | struct strbuf sb = STRBUF_INIT; | |
1981 | ||
1982 | strbuf_addf(&sb, "%s/.git", path); | |
1983 | unlink_or_warn(sb.buf); | |
1984 | strbuf_release(&sb); | |
1985 | ||
1986 | if (is_empty_dir(path)) | |
1987 | rmdir_or_warn(path); | |
1988 | ||
1989 | submodule_unset_core_worktree(sub); | |
1990 | } | |
1991 | } | |
1992 | out: | |
1993 | return ret; | |
1994 | } | |
1995 | ||
1996 | /* | |
1997 | * Embeds a single submodules git directory into the superprojects git dir, | |
1998 | * non recursively. | |
1999 | */ | |
2000 | static void relocate_single_git_dir_into_superproject(const char *prefix, | |
2001 | const char *path) | |
2002 | { | |
2003 | char *old_git_dir = NULL, *real_old_git_dir = NULL, *real_new_git_dir = NULL; | |
2004 | const char *new_git_dir; | |
2005 | const struct submodule *sub; | |
2006 | ||
2007 | if (submodule_uses_worktrees(path)) | |
2008 | die(_("relocate_gitdir for submodule '%s' with " | |
2009 | "more than one worktree not supported"), path); | |
2010 | ||
2011 | old_git_dir = xstrfmt("%s/.git", path); | |
2012 | if (read_gitfile(old_git_dir)) | |
2013 | /* If it is an actual gitfile, it doesn't need migration. */ | |
2014 | return; | |
2015 | ||
2016 | real_old_git_dir = real_pathdup(old_git_dir, 1); | |
2017 | ||
2018 | sub = submodule_from_path(the_repository, &null_oid, path); | |
2019 | if (!sub) | |
2020 | die(_("could not lookup name for submodule '%s'"), path); | |
2021 | ||
2022 | new_git_dir = git_path("modules/%s", sub->name); | |
2023 | if (safe_create_leading_directories_const(new_git_dir) < 0) | |
2024 | die(_("could not create directory '%s'"), new_git_dir); | |
2025 | real_new_git_dir = real_pathdup(new_git_dir, 1); | |
2026 | ||
2027 | fprintf(stderr, _("Migrating git directory of '%s%s' from\n'%s' to\n'%s'\n"), | |
2028 | get_super_prefix_or_empty(), path, | |
2029 | real_old_git_dir, real_new_git_dir); | |
2030 | ||
2031 | relocate_gitdir(path, real_old_git_dir, real_new_git_dir); | |
2032 | ||
2033 | free(old_git_dir); | |
2034 | free(real_old_git_dir); | |
2035 | free(real_new_git_dir); | |
2036 | } | |
2037 | ||
2038 | /* | |
2039 | * Migrate the git directory of the submodule given by path from | |
2040 | * having its git directory within the working tree to the git dir nested | |
2041 | * in its superprojects git dir under modules/. | |
2042 | */ | |
2043 | void absorb_git_dir_into_superproject(const char *prefix, | |
2044 | const char *path, | |
2045 | unsigned flags) | |
2046 | { | |
2047 | int err_code; | |
2048 | const char *sub_git_dir; | |
2049 | struct strbuf gitdir = STRBUF_INIT; | |
2050 | strbuf_addf(&gitdir, "%s/.git", path); | |
2051 | sub_git_dir = resolve_gitdir_gently(gitdir.buf, &err_code); | |
2052 | ||
2053 | /* Not populated? */ | |
2054 | if (!sub_git_dir) { | |
2055 | const struct submodule *sub; | |
2056 | ||
2057 | if (err_code == READ_GITFILE_ERR_STAT_FAILED) { | |
2058 | /* unpopulated as expected */ | |
2059 | strbuf_release(&gitdir); | |
2060 | return; | |
2061 | } | |
2062 | ||
2063 | if (err_code != READ_GITFILE_ERR_NOT_A_REPO) | |
2064 | /* We don't know what broke here. */ | |
2065 | read_gitfile_error_die(err_code, path, NULL); | |
2066 | ||
2067 | /* | |
2068 | * Maybe populated, but no git directory was found? | |
2069 | * This can happen if the superproject is a submodule | |
2070 | * itself and was just absorbed. The absorption of the | |
2071 | * superproject did not rewrite the git file links yet, | |
2072 | * fix it now. | |
2073 | */ | |
2074 | sub = submodule_from_path(the_repository, &null_oid, path); | |
2075 | if (!sub) | |
2076 | die(_("could not lookup name for submodule '%s'"), path); | |
2077 | connect_work_tree_and_git_dir(path, | |
2078 | git_path("modules/%s", sub->name), 0); | |
2079 | } else { | |
2080 | /* Is it already absorbed into the superprojects git dir? */ | |
2081 | char *real_sub_git_dir = real_pathdup(sub_git_dir, 1); | |
2082 | char *real_common_git_dir = real_pathdup(get_git_common_dir(), 1); | |
2083 | ||
2084 | if (!starts_with(real_sub_git_dir, real_common_git_dir)) | |
2085 | relocate_single_git_dir_into_superproject(prefix, path); | |
2086 | ||
2087 | free(real_sub_git_dir); | |
2088 | free(real_common_git_dir); | |
2089 | } | |
2090 | strbuf_release(&gitdir); | |
2091 | ||
2092 | if (flags & ABSORB_GITDIR_RECURSE_SUBMODULES) { | |
2093 | struct child_process cp = CHILD_PROCESS_INIT; | |
2094 | struct strbuf sb = STRBUF_INIT; | |
2095 | ||
2096 | if (flags & ~ABSORB_GITDIR_RECURSE_SUBMODULES) | |
2097 | BUG("we don't know how to pass the flags down?"); | |
2098 | ||
2099 | strbuf_addstr(&sb, get_super_prefix_or_empty()); | |
2100 | strbuf_addstr(&sb, path); | |
2101 | strbuf_addch(&sb, '/'); | |
2102 | ||
2103 | cp.dir = path; | |
2104 | cp.git_cmd = 1; | |
2105 | cp.no_stdin = 1; | |
2106 | argv_array_pushl(&cp.args, "--super-prefix", sb.buf, | |
2107 | "submodule--helper", | |
2108 | "absorb-git-dirs", NULL); | |
2109 | prepare_submodule_repo_env(&cp.env_array); | |
2110 | if (run_command(&cp)) | |
2111 | die(_("could not recurse into submodule '%s'"), path); | |
2112 | ||
2113 | strbuf_release(&sb); | |
2114 | } | |
2115 | } | |
2116 | ||
2117 | const char *get_superproject_working_tree(void) | |
2118 | { | |
2119 | struct child_process cp = CHILD_PROCESS_INIT; | |
2120 | struct strbuf sb = STRBUF_INIT; | |
2121 | const char *one_up = real_path_if_valid("../"); | |
2122 | const char *cwd = xgetcwd(); | |
2123 | const char *ret = NULL; | |
2124 | const char *subpath; | |
2125 | int code; | |
2126 | ssize_t len; | |
2127 | ||
2128 | if (!is_inside_work_tree()) | |
2129 | /* | |
2130 | * FIXME: | |
2131 | * We might have a superproject, but it is harder | |
2132 | * to determine. | |
2133 | */ | |
2134 | return NULL; | |
2135 | ||
2136 | if (!one_up) | |
2137 | return NULL; | |
2138 | ||
2139 | subpath = relative_path(cwd, one_up, &sb); | |
2140 | ||
2141 | prepare_submodule_repo_env(&cp.env_array); | |
2142 | argv_array_pop(&cp.env_array); | |
2143 | ||
2144 | argv_array_pushl(&cp.args, "--literal-pathspecs", "-C", "..", | |
2145 | "ls-files", "-z", "--stage", "--full-name", "--", | |
2146 | subpath, NULL); | |
2147 | strbuf_reset(&sb); | |
2148 | ||
2149 | cp.no_stdin = 1; | |
2150 | cp.no_stderr = 1; | |
2151 | cp.out = -1; | |
2152 | cp.git_cmd = 1; | |
2153 | ||
2154 | if (start_command(&cp)) | |
2155 | die(_("could not start ls-files in ..")); | |
2156 | ||
2157 | len = strbuf_read(&sb, cp.out, PATH_MAX); | |
2158 | close(cp.out); | |
2159 | ||
2160 | if (starts_with(sb.buf, "160000")) { | |
2161 | int super_sub_len; | |
2162 | int cwd_len = strlen(cwd); | |
2163 | char *super_sub, *super_wt; | |
2164 | ||
2165 | /* | |
2166 | * There is a superproject having this repo as a submodule. | |
2167 | * The format is <mode> SP <hash> SP <stage> TAB <full name> \0, | |
2168 | * We're only interested in the name after the tab. | |
2169 | */ | |
2170 | super_sub = strchr(sb.buf, '\t') + 1; | |
2171 | super_sub_len = strlen(super_sub); | |
2172 | ||
2173 | if (super_sub_len > cwd_len || | |
2174 | strcmp(&cwd[cwd_len - super_sub_len], super_sub)) | |
2175 | BUG("returned path string doesn't match cwd?"); | |
2176 | ||
2177 | super_wt = xstrdup(cwd); | |
2178 | super_wt[cwd_len - super_sub_len] = '\0'; | |
2179 | ||
2180 | ret = real_path(super_wt); | |
2181 | free(super_wt); | |
2182 | } | |
2183 | strbuf_release(&sb); | |
2184 | ||
2185 | code = finish_command(&cp); | |
2186 | ||
2187 | if (code == 128) | |
2188 | /* '../' is not a git repository */ | |
2189 | return NULL; | |
2190 | if (code == 0 && len == 0) | |
2191 | /* There is an unrelated git repository at '../' */ | |
2192 | return NULL; | |
2193 | if (code) | |
2194 | die(_("ls-tree returned unexpected return code %d"), code); | |
2195 | ||
2196 | return ret; | |
2197 | } | |
2198 | ||
2199 | /* | |
2200 | * Put the gitdir for a submodule (given relative to the main | |
2201 | * repository worktree) into `buf`, or return -1 on error. | |
2202 | */ | |
2203 | int submodule_to_gitdir(struct strbuf *buf, const char *submodule) | |
2204 | { | |
2205 | const struct submodule *sub; | |
2206 | const char *git_dir; | |
2207 | int ret = 0; | |
2208 | ||
2209 | strbuf_reset(buf); | |
2210 | strbuf_addstr(buf, submodule); | |
2211 | strbuf_complete(buf, '/'); | |
2212 | strbuf_addstr(buf, ".git"); | |
2213 | ||
2214 | git_dir = read_gitfile(buf->buf); | |
2215 | if (git_dir) { | |
2216 | strbuf_reset(buf); | |
2217 | strbuf_addstr(buf, git_dir); | |
2218 | } | |
2219 | if (!is_git_directory(buf->buf)) { | |
2220 | sub = submodule_from_path(the_repository, &null_oid, submodule); | |
2221 | if (!sub) { | |
2222 | ret = -1; | |
2223 | goto cleanup; | |
2224 | } | |
2225 | strbuf_reset(buf); | |
2226 | strbuf_git_path(buf, "%s/%s", "modules", sub->name); | |
2227 | } | |
2228 | ||
2229 | cleanup: | |
2230 | return ret; | |
2231 | } |