1#include "cache.h"
2#include "submodule.h"
3#include "dir.h"
4#include "diff.h"
5#include "commit.h"
6#include "revision.h"
7#include "run-command.h"
8#include "diffcore.h"
9#include "refs.h"
10#include "string-list.h"
11static struct string_list config_name_for_path;
13static struct string_list config_fetch_recurse_submodules_for_name;
14static struct string_list config_ignore_for_name;
15static int config_fetch_recurse_submodules = RECURSE_SUBMODULES_ON_DEMAND;
16static struct string_list changed_submodule_paths;
17static int add_submodule_odb(const char *path)
19{
20 struct strbuf objects_directory = STRBUF_INIT;
21 struct alternate_object_database *alt_odb;
22 int ret = 0;
23 const char *git_dir;
24 strbuf_addf(&objects_directory, "%s/.git", path);
26 git_dir = read_gitfile_gently(objects_directory.buf);
27 if (git_dir) {
28 strbuf_reset(&objects_directory);
29 strbuf_addstr(&objects_directory, git_dir);
30 }
31 strbuf_addstr(&objects_directory, "/objects/");
32 if (!is_directory(objects_directory.buf)) {
33 ret = -1;
34 goto done;
35 }
36 /* avoid adding it twice */
37 for (alt_odb = alt_odb_list; alt_odb; alt_odb = alt_odb->next)
38 if (alt_odb->name - alt_odb->base == objects_directory.len &&
39 !strncmp(alt_odb->base, objects_directory.buf,
40 objects_directory.len))
41 goto done;
42 alt_odb = xmalloc(objects_directory.len + 42 + sizeof(*alt_odb));
44 alt_odb->next = alt_odb_list;
45 strcpy(alt_odb->base, objects_directory.buf);
46 alt_odb->name = alt_odb->base + objects_directory.len;
47 alt_odb->name[2] = '/';
48 alt_odb->name[40] = '\0';
49 alt_odb->name[41] = '\0';
50 alt_odb_list = alt_odb;
51 prepare_alt_odb();
52done:
53 strbuf_release(&objects_directory);
54 return ret;
55}
56void set_diffopt_flags_from_submodule_config(struct diff_options *diffopt,
58 const char *path)
59{
60 struct string_list_item *path_option, *ignore_option;
61 path_option = unsorted_string_list_lookup(&config_name_for_path, path);
62 if (path_option) {
63 ignore_option = unsorted_string_list_lookup(&config_ignore_for_name, path_option->util);
64 if (ignore_option)
65 handle_ignore_submodules_arg(diffopt, ignore_option->util);
66 }
67}
68int submodule_config(const char *var, const char *value, void *cb)
70{
71 if (!prefixcmp(var, "submodule."))
72 return parse_submodule_config_option(var, value);
73 else if (!strcmp(var, "fetch.recursesubmodules")) {
74 config_fetch_recurse_submodules = parse_fetch_recurse_submodules_arg(var, value);
75 return 0;
76 }
77 return 0;
78}
79void gitmodules_config(void)
81{
82 const char *work_tree = get_git_work_tree();
83 if (work_tree) {
84 struct strbuf gitmodules_path = STRBUF_INIT;
85 strbuf_addstr(&gitmodules_path, work_tree);
86 strbuf_addstr(&gitmodules_path, "/.gitmodules");
87 git_config_from_file(submodule_config, gitmodules_path.buf, NULL);
88 strbuf_release(&gitmodules_path);
89 }
90}
91int parse_submodule_config_option(const char *var, const char *value)
93{
94 int len;
95 struct string_list_item *config;
96 struct strbuf submodname = STRBUF_INIT;
97 var += 10; /* Skip "submodule." */
99 len = strlen(var);
101 if ((len > 5) && !strcmp(var + len - 5, ".path")) {
102 strbuf_add(&submodname, var, len - 5);
103 config = unsorted_string_list_lookup(&config_name_for_path, value);
104 if (config)
105 free(config->util);
106 else
107 config = string_list_append(&config_name_for_path, xstrdup(value));
108 config->util = strbuf_detach(&submodname, NULL);
109 strbuf_release(&submodname);
110 } else if ((len > 23) && !strcmp(var + len - 23, ".fetchrecursesubmodules")) {
111 strbuf_add(&submodname, var, len - 23);
112 config = unsorted_string_list_lookup(&config_fetch_recurse_submodules_for_name, submodname.buf);
113 if (!config)
114 config = string_list_append(&config_fetch_recurse_submodules_for_name,
115 strbuf_detach(&submodname, NULL));
116 config->util = (void *)(intptr_t)parse_fetch_recurse_submodules_arg(var, value);
117 strbuf_release(&submodname);
118 } else if ((len > 7) && !strcmp(var + len - 7, ".ignore")) {
119 if (strcmp(value, "untracked") && strcmp(value, "dirty") &&
120 strcmp(value, "all") && strcmp(value, "none")) {
121 warning("Invalid parameter \"%s\" for config option \"submodule.%s.ignore\"", value, var);
122 return 0;
123 }
124 strbuf_add(&submodname, var, len - 7);
126 config = unsorted_string_list_lookup(&config_ignore_for_name, submodname.buf);
127 if (config)
128 free(config->util);
129 else
130 config = string_list_append(&config_ignore_for_name,
131 strbuf_detach(&submodname, NULL));
132 strbuf_release(&submodname);
133 config->util = xstrdup(value);
134 return 0;
135 }
136 return 0;
137}
138void handle_ignore_submodules_arg(struct diff_options *diffopt,
140 const char *arg)
141{
142 DIFF_OPT_CLR(diffopt, IGNORE_SUBMODULES);
143 DIFF_OPT_CLR(diffopt, IGNORE_UNTRACKED_IN_SUBMODULES);
144 DIFF_OPT_CLR(diffopt, IGNORE_DIRTY_SUBMODULES);
145 if (!strcmp(arg, "all"))
147 DIFF_OPT_SET(diffopt, IGNORE_SUBMODULES);
148 else if (!strcmp(arg, "untracked"))
149 DIFF_OPT_SET(diffopt, IGNORE_UNTRACKED_IN_SUBMODULES);
150 else if (!strcmp(arg, "dirty"))
151 DIFF_OPT_SET(diffopt, IGNORE_DIRTY_SUBMODULES);
152 else if (strcmp(arg, "none"))
153 die("bad --ignore-submodules argument: %s", arg);
154}
155static int prepare_submodule_summary(struct rev_info *rev, const char *path,
157 struct commit *left, struct commit *right,
158 int *fast_forward, int *fast_backward)
159{
160 struct commit_list *merge_bases, *list;
161 init_revisions(rev, NULL);
163 setup_revisions(0, NULL, rev, NULL);
164 rev->left_right = 1;
165 rev->first_parent_only = 1;
166 left->object.flags |= SYMMETRIC_LEFT;
167 add_pending_object(rev, &left->object, path);
168 add_pending_object(rev, &right->object, path);
169 merge_bases = get_merge_bases(left, right, 1);
170 if (merge_bases) {
171 if (merge_bases->item == left)
172 *fast_forward = 1;
173 else if (merge_bases->item == right)
174 *fast_backward = 1;
175 }
176 for (list = merge_bases; list; list = list->next) {
177 list->item->object.flags |= UNINTERESTING;
178 add_pending_object(rev, &list->item->object,
179 sha1_to_hex(list->item->object.sha1));
180 }
181 return prepare_revision_walk(rev);
182}
183static void print_submodule_summary(struct rev_info *rev, FILE *f,
185 const char *del, const char *add, const char *reset)
186{
187 static const char format[] = " %m %s";
188 struct strbuf sb = STRBUF_INIT;
189 struct commit *commit;
190 while ((commit = get_revision(rev))) {
192 struct pretty_print_context ctx = {0};
193 ctx.date_mode = rev->date_mode;
194 strbuf_setlen(&sb, 0);
195 if (commit->object.flags & SYMMETRIC_LEFT) {
196 if (del)
197 strbuf_addstr(&sb, del);
198 }
199 else if (add)
200 strbuf_addstr(&sb, add);
201 format_commit_message(commit, format, &sb, &ctx);
202 if (reset)
203 strbuf_addstr(&sb, reset);
204 strbuf_addch(&sb, '\n');
205 fprintf(f, "%s", sb.buf);
206 }
207 strbuf_release(&sb);
208}
209int parse_fetch_recurse_submodules_arg(const char *opt, const char *arg)
211{
212 switch (git_config_maybe_bool(opt, arg)) {
213 case 1:
214 return RECURSE_SUBMODULES_ON;
215 case 0:
216 return RECURSE_SUBMODULES_OFF;
217 default:
218 if (!strcmp(arg, "on-demand"))
219 return RECURSE_SUBMODULES_ON_DEMAND;
220 die("bad %s argument: %s", opt, arg);
221 }
222}
223void show_submodule_summary(FILE *f, const char *path,
225 unsigned char one[20], unsigned char two[20],
226 unsigned dirty_submodule,
227 const char *del, const char *add, const char *reset)
228{
229 struct rev_info rev;
230 struct commit *left = left, *right = right;
231 const char *message = NULL;
232 struct strbuf sb = STRBUF_INIT;
233 int fast_forward = 0, fast_backward = 0;
234 if (is_null_sha1(two))
236 message = "(submodule deleted)";
237 else if (add_submodule_odb(path))
238 message = "(not checked out)";
239 else if (is_null_sha1(one))
240 message = "(new submodule)";
241 else if (!(left = lookup_commit_reference(one)) ||
242 !(right = lookup_commit_reference(two)))
243 message = "(commits not present)";
244 if (!message &&
246 prepare_submodule_summary(&rev, path, left, right,
247 &fast_forward, &fast_backward))
248 message = "(revision walker failed)";
249 if (dirty_submodule & DIRTY_SUBMODULE_UNTRACKED)
251 fprintf(f, "Submodule %s contains untracked content\n", path);
252 if (dirty_submodule & DIRTY_SUBMODULE_MODIFIED)
253 fprintf(f, "Submodule %s contains modified content\n", path);
254 if (!hashcmp(one, two)) {
256 strbuf_release(&sb);
257 return;
258 }
259 strbuf_addf(&sb, "Submodule %s %s..", path,
261 find_unique_abbrev(one, DEFAULT_ABBREV));
262 if (!fast_backward && !fast_forward)
263 strbuf_addch(&sb, '.');
264 strbuf_addf(&sb, "%s", find_unique_abbrev(two, DEFAULT_ABBREV));
265 if (message)
266 strbuf_addf(&sb, " %s\n", message);
267 else
268 strbuf_addf(&sb, "%s:\n", fast_backward ? " (rewind)" : "");
269 fwrite(sb.buf, sb.len, 1, f);
270 if (!message) {
272 print_submodule_summary(&rev, f, del, add, reset);
273 clear_commit_marks(left, ~0);
274 clear_commit_marks(right, ~0);
275 }
276 strbuf_release(&sb);
278}
279void set_config_fetch_recurse_submodules(int value)
281{
282 config_fetch_recurse_submodules = value;
283}
284static int is_submodule_commit_present(const char *path, unsigned char sha1[20])
286{
287 int is_present = 0;
288 if (!add_submodule_odb(path) && lookup_commit_reference(sha1)) {
289 /* Even if the submodule is checked out and the commit is
290 * present, make sure it is reachable from a ref. */
291 struct child_process cp;
292 const char *argv[] = {"rev-list", "-n", "1", NULL, "--not", "--all", NULL};
293 struct strbuf buf = STRBUF_INIT;
294 argv[3] = sha1_to_hex(sha1);
296 memset(&cp, 0, sizeof(cp));
297 cp.argv = argv;
298 cp.env = local_repo_env;
299 cp.git_cmd = 1;
300 cp.no_stdin = 1;
301 cp.out = -1;
302 cp.dir = path;
303 if (!run_command(&cp) && !strbuf_read(&buf, cp.out, 1024))
304 is_present = 1;
305 close(cp.out);
307 strbuf_release(&buf);
308 }
309 return is_present;
310}
311static void submodule_collect_changed_cb(struct diff_queue_struct *q,
313 struct diff_options *options,
314 void *data)
315{
316 int i;
317 for (i = 0; i < q->nr; i++) {
318 struct diff_filepair *p = q->queue[i];
319 if (!S_ISGITLINK(p->two->mode))
320 continue;
321 if (S_ISGITLINK(p->one->mode)) {
323 /* NEEDSWORK: We should honor the name configured in
324 * the .gitmodules file of the commit we are examining
325 * here to be able to correctly follow submodules
326 * being moved around. */
327 struct string_list_item *path;
328 path = unsorted_string_list_lookup(&changed_submodule_paths, p->two->path);
329 if (!path && !is_submodule_commit_present(p->two->path, p->two->sha1))
330 string_list_append(&changed_submodule_paths, xstrdup(p->two->path));
331 } else {
332 /* Submodule is new or was moved here */
333 /* NEEDSWORK: When the .git directories of submodules
334 * live inside the superprojects .git directory some
335 * day we should fetch new submodules directly into
336 * that location too when config or options request
337 * that so they can be checked out from there. */
338 continue;
339 }
340 }
341}
342void check_for_new_submodule_commits(unsigned char new_sha1[20])
344{
345 struct rev_info rev;
346 struct commit *commit;
347 const char *argv[] = {NULL, NULL, "--not", "--all", NULL};
348 int argc = ARRAY_SIZE(argv) - 1;
349 init_revisions(&rev, NULL);
351 argv[1] = xstrdup(sha1_to_hex(new_sha1));
352 setup_revisions(argc, argv, &rev, NULL);
353 if (prepare_revision_walk(&rev))
354 die("revision walk setup failed");
355 /*
357 * Collect all submodules (whether checked out or not) for which new
358 * commits have been recorded upstream in "changed_submodule_paths".
359 */
360 while ((commit = get_revision(&rev))) {
361 struct commit_list *parent = commit->parents;
362 while (parent) {
363 struct diff_options diff_opts;
364 diff_setup(&diff_opts);
365 DIFF_OPT_SET(&diff_opts, RECURSIVE);
366 diff_opts.output_format |= DIFF_FORMAT_CALLBACK;
367 diff_opts.format_callback = submodule_collect_changed_cb;
368 if (diff_setup_done(&diff_opts) < 0)
369 die("diff_setup_done failed");
370 diff_tree_sha1(parent->item->object.sha1, commit->object.sha1, "", &diff_opts);
371 diffcore_std(&diff_opts);
372 diff_flush(&diff_opts);
373 parent = parent->next;
374 }
375 }
376 free((char *)argv[1]);
377}
378int fetch_populated_submodules(int num_options, const char **options,
380 const char *prefix, int command_line_option,
381 int quiet)
382{
383 int i, result = 0, argc = 0, default_argc;
384 struct child_process cp;
385 const char **argv;
386 struct string_list_item *name_for_path;
387 const char *work_tree = get_git_work_tree();
388 if (!work_tree)
389 goto out;
390 if (!the_index.initialized)
392 if (read_cache() < 0)
393 die("index file corrupt");
394 /* 6: "fetch" (options) --recurse-submodules-default default "--submodule-prefix" prefix NULL */
396 argv = xcalloc(num_options + 6, sizeof(const char *));
397 argv[argc++] = "fetch";
398 for (i = 0; i < num_options; i++)
399 argv[argc++] = options[i];
400 argv[argc++] = "--recurse-submodules-default";
401 default_argc = argc++;
402 argv[argc++] = "--submodule-prefix";
403 memset(&cp, 0, sizeof(cp));
405 cp.argv = argv;
406 cp.env = local_repo_env;
407 cp.git_cmd = 1;
408 cp.no_stdin = 1;
409 for (i = 0; i < active_nr; i++) {
411 struct strbuf submodule_path = STRBUF_INIT;
412 struct strbuf submodule_git_dir = STRBUF_INIT;
413 struct strbuf submodule_prefix = STRBUF_INIT;
414 struct cache_entry *ce = active_cache[i];
415 const char *git_dir, *name, *default_argv;
416 if (!S_ISGITLINK(ce->ce_mode))
418 continue;
419 name = ce->name;
421 name_for_path = unsorted_string_list_lookup(&config_name_for_path, ce->name);
422 if (name_for_path)
423 name = name_for_path->util;
424 default_argv = "yes";
426 if (command_line_option == RECURSE_SUBMODULES_DEFAULT) {
427 struct string_list_item *fetch_recurse_submodules_option;
428 fetch_recurse_submodules_option = unsorted_string_list_lookup(&config_fetch_recurse_submodules_for_name, name);
429 if (fetch_recurse_submodules_option) {
430 if ((intptr_t)fetch_recurse_submodules_option->util == RECURSE_SUBMODULES_OFF)
431 continue;
432 if ((intptr_t)fetch_recurse_submodules_option->util == RECURSE_SUBMODULES_ON_DEMAND) {
433 if (!unsorted_string_list_lookup(&changed_submodule_paths, ce->name))
434 continue;
435 default_argv = "on-demand";
436 }
437 } else {
438 if (config_fetch_recurse_submodules == RECURSE_SUBMODULES_OFF)
439 continue;
440 if (config_fetch_recurse_submodules == RECURSE_SUBMODULES_ON_DEMAND) {
441 if (!unsorted_string_list_lookup(&changed_submodule_paths, ce->name))
442 continue;
443 default_argv = "on-demand";
444 }
445 }
446 } else if (command_line_option == RECURSE_SUBMODULES_ON_DEMAND) {
447 if (!unsorted_string_list_lookup(&changed_submodule_paths, ce->name))
448 continue;
449 default_argv = "on-demand";
450 }
451 strbuf_addf(&submodule_path, "%s/%s", work_tree, ce->name);
453 strbuf_addf(&submodule_git_dir, "%s/.git", submodule_path.buf);
454 strbuf_addf(&submodule_prefix, "%s%s/", prefix, ce->name);
455 git_dir = read_gitfile_gently(submodule_git_dir.buf);
456 if (!git_dir)
457 git_dir = submodule_git_dir.buf;
458 if (is_directory(git_dir)) {
459 if (!quiet)
460 printf("Fetching submodule %s%s\n", prefix, ce->name);
461 cp.dir = submodule_path.buf;
462 argv[default_argc] = default_argv;
463 argv[argc] = submodule_prefix.buf;
464 if (run_command(&cp))
465 result = 1;
466 }
467 strbuf_release(&submodule_path);
468 strbuf_release(&submodule_git_dir);
469 strbuf_release(&submodule_prefix);
470 }
471 free(argv);
472out:
473 string_list_clear(&changed_submodule_paths, 1);
474 return result;
475}
476unsigned is_submodule_modified(const char *path, int ignore_untracked)
478{
479 ssize_t len;
480 struct child_process cp;
481 const char *argv[] = {
482 "status",
483 "--porcelain",
484 NULL,
485 NULL,
486 };
487 struct strbuf buf = STRBUF_INIT;
488 unsigned dirty_submodule = 0;
489 const char *line, *next_line;
490 const char *git_dir;
491 strbuf_addf(&buf, "%s/.git", path);
493 git_dir = read_gitfile_gently(buf.buf);
494 if (!git_dir)
495 git_dir = buf.buf;
496 if (!is_directory(git_dir)) {
497 strbuf_release(&buf);
498 /* The submodule is not checked out, so it is not modified */
499 return 0;
500 }
502 strbuf_reset(&buf);
503 if (ignore_untracked)
505 argv[2] = "-uno";
506 memset(&cp, 0, sizeof(cp));
508 cp.argv = argv;
509 cp.env = local_repo_env;
510 cp.git_cmd = 1;
511 cp.no_stdin = 1;
512 cp.out = -1;
513 cp.dir = path;
514 if (start_command(&cp))
515 die("Could not run git status --porcelain");
516 len = strbuf_read(&buf, cp.out, 1024);
518 line = buf.buf;
519 while (len > 2) {
520 if ((line[0] == '?') && (line[1] == '?')) {
521 dirty_submodule |= DIRTY_SUBMODULE_UNTRACKED;
522 if (dirty_submodule & DIRTY_SUBMODULE_MODIFIED)
523 break;
524 } else {
525 dirty_submodule |= DIRTY_SUBMODULE_MODIFIED;
526 if (ignore_untracked ||
527 (dirty_submodule & DIRTY_SUBMODULE_UNTRACKED))
528 break;
529 }
530 next_line = strchr(line, '\n');
531 if (!next_line)
532 break;
533 next_line++;
534 len -= (next_line - line);
535 line = next_line;
536 }
537 close(cp.out);
538 if (finish_command(&cp))
540 die("git status --porcelain failed");
541 strbuf_release(&buf);
543 return dirty_submodule;
544}
545static int find_first_merges(struct object_array *result, const char *path,
547 struct commit *a, struct commit *b)
548{
549 int i, j;
550 struct object_array merges;
551 struct commit *commit;
552 int contains_another;
553 char merged_revision[42];
555 const char *rev_args[] = { "rev-list", "--merges", "--ancestry-path",
556 "--all", merged_revision, NULL };
557 struct rev_info revs;
558 struct setup_revision_opt rev_opts;
559 memset(&merges, 0, sizeof(merges));
561 memset(result, 0, sizeof(struct object_array));
562 memset(&rev_opts, 0, sizeof(rev_opts));
563 /* get all revisions that merge commit a */
565 snprintf(merged_revision, sizeof(merged_revision), "^%s",
566 sha1_to_hex(a->object.sha1));
567 init_revisions(&revs, NULL);
568 rev_opts.submodule = path;
569 setup_revisions(sizeof(rev_args)/sizeof(char *)-1, rev_args, &revs, &rev_opts);
570 /* save all revisions from the above list that contain b */
572 if (prepare_revision_walk(&revs))
573 die("revision walk setup failed");
574 while ((commit = get_revision(&revs)) != NULL) {
575 struct object *o = &(commit->object);
576 if (in_merge_bases(b, &commit, 1))
577 add_object_array(o, NULL, &merges);
578 }
579 /* Now we've got all merges that contain a and b. Prune all
581 * merges that contain another found merge and save them in
582 * result.
583 */
584 for (i = 0; i < merges.nr; i++) {
585 struct commit *m1 = (struct commit *) merges.objects[i].item;
586 contains_another = 0;
588 for (j = 0; j < merges.nr; j++) {
589 struct commit *m2 = (struct commit *) merges.objects[j].item;
590 if (i != j && in_merge_bases(m2, &m1, 1)) {
591 contains_another = 1;
592 break;
593 }
594 }
595 if (!contains_another)
597 add_object_array(merges.objects[i].item,
598 merges.objects[i].name, result);
599 }
600 free(merges.objects);
602 return result->nr;
603}
604static void print_commit(struct commit *commit)
606{
607 struct strbuf sb = STRBUF_INIT;
608 struct pretty_print_context ctx = {0};
609 ctx.date_mode = DATE_NORMAL;
610 format_commit_message(commit, " %h: %m %s", &sb, &ctx);
611 fprintf(stderr, "%s\n", sb.buf);
612 strbuf_release(&sb);
613}
614#define MERGE_WARNING(path, msg) \
616 warning("Failed to merge submodule %s (%s)", path, msg);
617int merge_submodule(unsigned char result[20], const char *path,
619 const unsigned char base[20], const unsigned char a[20],
620 const unsigned char b[20])
621{
622 struct commit *commit_base, *commit_a, *commit_b;
623 int parent_count;
624 struct object_array merges;
625 int i;
627 /* store a in result in case we fail */
629 hashcpy(result, a);
630 /* we can not handle deletion conflicts */
632 if (is_null_sha1(base))
633 return 0;
634 if (is_null_sha1(a))
635 return 0;
636 if (is_null_sha1(b))
637 return 0;
638 if (add_submodule_odb(path)) {
640 MERGE_WARNING(path, "not checked out");
641 return 0;
642 }
643 if (!(commit_base = lookup_commit_reference(base)) ||
645 !(commit_a = lookup_commit_reference(a)) ||
646 !(commit_b = lookup_commit_reference(b))) {
647 MERGE_WARNING(path, "commits not present");
648 return 0;
649 }
650 /* check whether both changes are forward */
652 if (!in_merge_bases(commit_base, &commit_a, 1) ||
653 !in_merge_bases(commit_base, &commit_b, 1)) {
654 MERGE_WARNING(path, "commits don't follow merge-base");
655 return 0;
656 }
657 /* Case #1: a is contained in b or vice versa */
659 if (in_merge_bases(commit_a, &commit_b, 1)) {
660 hashcpy(result, b);
661 return 1;
662 }
663 if (in_merge_bases(commit_b, &commit_a, 1)) {
664 hashcpy(result, a);
665 return 1;
666 }
667 /*
669 * Case #2: There are one or more merges that contain a and b in
670 * the submodule. If there is only one, then present it as a
671 * suggestion to the user, but leave it marked unmerged so the
672 * user needs to confirm the resolution.
673 */
674 /* find commit which merges them */
676 parent_count = find_first_merges(&merges, path, commit_a, commit_b);
677 switch (parent_count) {
678 case 0:
679 MERGE_WARNING(path, "merge following commits not found");
680 break;
681 case 1:
683 MERGE_WARNING(path, "not fast-forward");
684 fprintf(stderr, "Found a possible merge resolution "
685 "for the submodule:\n");
686 print_commit((struct commit *) merges.objects[0].item);
687 fprintf(stderr,
688 "If this is correct simply add it to the index "
689 "for example\n"
690 "by using:\n\n"
691 " git update-index --cacheinfo 160000 %s \"%s\"\n\n"
692 "which will accept this suggestion.\n",
693 sha1_to_hex(merges.objects[0].item->sha1), path);
694 break;
695 default:
697 MERGE_WARNING(path, "multiple merges found");
698 for (i = 0; i < merges.nr; i++)
699 print_commit((struct commit *) merges.objects[i].item);
700 }
701 free(merges.objects);
703 return 0;
704}