Windows: boost startup by avoiding a static dependency on shell32.dll
[git/dscho.git] / builtin-update-index.c
bloba64a752990b85b69590cdbeed3901154642007b8
1 /*
2  * GIT - The information manager from hell
3  *
4  * Copyright (C) Linus Torvalds, 2005
5  */
6 #include "cache.h"
7 #include "quote.h"
8 #include "cache-tree.h"
9 #include "tree-walk.h"
10 #include "builtin.h"
11 #include "refs.h"
14  * Default to not allowing changes to the list of files. The
15  * tool doesn't actually care, but this makes it harder to add
16  * files to the revision control by mistake by doing something
17  * like "git update-index *" and suddenly having all the object
18  * files be revision controlled.
19  */
20 static int allow_add;
21 static int allow_remove;
22 static int allow_replace;
23 static int info_only;
24 static int force_remove;
25 static int verbose;
26 static int mark_valid_only;
27 static int mark_skip_worktree_only;
28 #define MARK_FLAG 1
29 #define UNMARK_FLAG 2
31 __attribute__((format (printf, 1, 2)))
32 static void report(const char *fmt, ...)
34         va_list vp;
36         if (!verbose)
37                 return;
39         va_start(vp, fmt);
40         vprintf(fmt, vp);
41         putchar('\n');
42         va_end(vp);
45 static int mark_ce_flags(const char *path, int flag, int mark)
47         int namelen = strlen(path);
48         int pos = cache_name_pos(path, namelen);
49         if (0 <= pos) {
50                 if (mark)
51                         active_cache[pos]->ce_flags |= flag;
52                 else
53                         active_cache[pos]->ce_flags &= ~flag;
54                 cache_tree_invalidate_path(active_cache_tree, path);
55                 active_cache_changed = 1;
56                 return 0;
57         }
58         return -1;
61 static int remove_one_path(const char *path)
63         if (!allow_remove)
64                 return error("%s: does not exist and --remove not passed", path);
65         if (remove_file_from_cache(path))
66                 return error("%s: cannot remove from the index", path);
67         return 0;
71  * Handle a path that couldn't be lstat'ed. It's either:
72  *  - missing file (ENOENT or ENOTDIR). That's ok if we're
73  *    supposed to be removing it and the removal actually
74  *    succeeds.
75  *  - permission error. That's never ok.
76  */
77 static int process_lstat_error(const char *path, int err)
79         if (err == ENOENT || err == ENOTDIR)
80                 return remove_one_path(path);
81         return error("lstat(\"%s\"): %s", path, strerror(errno));
84 static int add_one_path(struct cache_entry *old, const char *path, int len, struct stat *st)
86         int option, size;
87         struct cache_entry *ce;
89         /* Was the old index entry already up-to-date? */
90         if (old && !ce_stage(old) && !ce_match_stat(old, st, 0))
91                 return 0;
93         size = cache_entry_size(len);
94         ce = xcalloc(1, size);
95         memcpy(ce->name, path, len);
96         ce->ce_flags = len;
97         fill_stat_cache_info(ce, st);
98         ce->ce_mode = ce_mode_from_stat(old, st->st_mode);
100         if (index_path(ce->sha1, path, st, !info_only))
101                 return -1;
102         option = allow_add ? ADD_CACHE_OK_TO_ADD : 0;
103         option |= allow_replace ? ADD_CACHE_OK_TO_REPLACE : 0;
104         if (add_cache_entry(ce, option))
105                 return error("%s: cannot add to the index - missing --add option?", path);
106         return 0;
110  * Handle a path that was a directory. Four cases:
112  *  - it's already a gitlink in the index, and we keep it that
113  *    way, and update it if we can (if we cannot find the HEAD,
114  *    we're going to keep it unchanged in the index!)
116  *  - it's a *file* in the index, in which case it should be
117  *    removed as a file if removal is allowed, since it doesn't
118  *    exist as such any more. If removal isn't allowed, it's
119  *    an error.
121  *    (NOTE! This is old and arguably fairly strange behaviour.
122  *    We might want to make this an error unconditionally, and
123  *    use "--force-remove" if you actually want to force removal).
125  *  - it used to exist as a subdirectory (ie multiple files with
126  *    this particular prefix) in the index, in which case it's wrong
127  *    to try to update it as a directory.
129  *  - it doesn't exist at all in the index, but it is a valid
130  *    git directory, and it should be *added* as a gitlink.
131  */
132 static int process_directory(const char *path, int len, struct stat *st)
134         unsigned char sha1[20];
135         int pos = cache_name_pos(path, len);
137         /* Exact match: file or existing gitlink */
138         if (pos >= 0) {
139                 struct cache_entry *ce = active_cache[pos];
140                 if (S_ISGITLINK(ce->ce_mode)) {
142                         /* Do nothing to the index if there is no HEAD! */
143                         if (resolve_gitlink_ref(path, "HEAD", sha1) < 0)
144                                 return 0;
146                         return add_one_path(ce, path, len, st);
147                 }
148                 /* Should this be an unconditional error? */
149                 return remove_one_path(path);
150         }
152         /* Inexact match: is there perhaps a subdirectory match? */
153         pos = -pos-1;
154         while (pos < active_nr) {
155                 struct cache_entry *ce = active_cache[pos++];
157                 if (strncmp(ce->name, path, len))
158                         break;
159                 if (ce->name[len] > '/')
160                         break;
161                 if (ce->name[len] < '/')
162                         continue;
164                 /* Subdirectory match - error out */
165                 return error("%s: is a directory - add individual files instead", path);
166         }
168         /* No match - should we add it as a gitlink? */
169         if (!resolve_gitlink_ref(path, "HEAD", sha1))
170                 return add_one_path(NULL, path, len, st);
172         /* Error out. */
173         return error("%s: is a directory - add files inside instead", path);
176 static int process_path(const char *path)
178         int pos, len;
179         struct stat st;
180         struct cache_entry *ce;
182         len = strlen(path);
183         if (has_symlink_leading_path(path, len))
184                 return error("'%s' is beyond a symbolic link", path);
186         pos = cache_name_pos(path, len);
187         ce = pos < 0 ? NULL : active_cache[pos];
188         if (ce && ce_skip_worktree(ce)) {
189                 /*
190                  * working directory version is assumed "good"
191                  * so updating it does not make sense.
192                  * On the other hand, removing it from index should work
193                  */
194                 if (allow_remove && remove_file_from_cache(path))
195                         return error("%s: cannot remove from the index", path);
196                 return 0;
197         }
199         /*
200          * First things first: get the stat information, to decide
201          * what to do about the pathname!
202          */
203         if (lstat(path, &st) < 0)
204                 return process_lstat_error(path, errno);
206         if (S_ISDIR(st.st_mode))
207                 return process_directory(path, len, &st);
209         /*
210          * Process a regular file
211          */
212         if (ce && S_ISGITLINK(ce->ce_mode))
213                 return error("%s is already a gitlink, not replacing", path);
215         return add_one_path(ce, path, len, &st);
218 static int add_cacheinfo(unsigned int mode, const unsigned char *sha1,
219                          const char *path, int stage)
221         int size, len, option;
222         struct cache_entry *ce;
224         if (!verify_path(path))
225                 return error("Invalid path '%s'", path);
227         len = strlen(path);
228         size = cache_entry_size(len);
229         ce = xcalloc(1, size);
231         hashcpy(ce->sha1, sha1);
232         memcpy(ce->name, path, len);
233         ce->ce_flags = create_ce_flags(len, stage);
234         ce->ce_mode = create_ce_mode(mode);
235         if (assume_unchanged)
236                 ce->ce_flags |= CE_VALID;
237         option = allow_add ? ADD_CACHE_OK_TO_ADD : 0;
238         option |= allow_replace ? ADD_CACHE_OK_TO_REPLACE : 0;
239         if (add_cache_entry(ce, option))
240                 return error("%s: cannot add to the index - missing --add option?",
241                              path);
242         report("add '%s'", path);
243         return 0;
246 static void chmod_path(int flip, const char *path)
248         int pos;
249         struct cache_entry *ce;
250         unsigned int mode;
252         pos = cache_name_pos(path, strlen(path));
253         if (pos < 0)
254                 goto fail;
255         ce = active_cache[pos];
256         mode = ce->ce_mode;
257         if (!S_ISREG(mode))
258                 goto fail;
259         switch (flip) {
260         case '+':
261                 ce->ce_mode |= 0111; break;
262         case '-':
263                 ce->ce_mode &= ~0111; break;
264         default:
265                 goto fail;
266         }
267         cache_tree_invalidate_path(active_cache_tree, path);
268         active_cache_changed = 1;
269         report("chmod %cx '%s'", flip, path);
270         return;
271  fail:
272         die("git update-index: cannot chmod %cx '%s'", flip, path);
275 static void update_one(const char *path, const char *prefix, int prefix_length)
277         const char *p = prefix_path(prefix, prefix_length, path);
278         if (!verify_path(p)) {
279                 fprintf(stderr, "Ignoring path %s\n", path);
280                 goto free_return;
281         }
282         if (mark_valid_only) {
283                 if (mark_ce_flags(p, CE_VALID, mark_valid_only == MARK_FLAG))
284                         die("Unable to mark file %s", path);
285                 goto free_return;
286         }
287         if (mark_skip_worktree_only) {
288                 if (mark_ce_flags(p, CE_SKIP_WORKTREE, mark_skip_worktree_only == MARK_FLAG))
289                         die("Unable to mark file %s", path);
290                 goto free_return;
291         }
293         if (force_remove) {
294                 if (remove_file_from_cache(p))
295                         die("git update-index: unable to remove %s", path);
296                 report("remove '%s'", path);
297                 goto free_return;
298         }
299         if (process_path(p))
300                 die("Unable to process path %s", path);
301         report("add '%s'", path);
302  free_return:
303         if (p < path || p > path + strlen(path))
304                 free((char *)p);
307 static void read_index_info(int line_termination)
309         struct strbuf buf = STRBUF_INIT;
310         struct strbuf uq = STRBUF_INIT;
312         while (strbuf_getline(&buf, stdin, line_termination) != EOF) {
313                 char *ptr, *tab;
314                 char *path_name;
315                 unsigned char sha1[20];
316                 unsigned int mode;
317                 unsigned long ul;
318                 int stage;
320                 /* This reads lines formatted in one of three formats:
321                  *
322                  * (1) mode         SP sha1          TAB path
323                  * The first format is what "git apply --index-info"
324                  * reports, and used to reconstruct a partial tree
325                  * that is used for phony merge base tree when falling
326                  * back on 3-way merge.
327                  *
328                  * (2) mode SP type SP sha1          TAB path
329                  * The second format is to stuff "git ls-tree" output
330                  * into the index file.
331                  *
332                  * (3) mode         SP sha1 SP stage TAB path
333                  * This format is to put higher order stages into the
334                  * index file and matches "git ls-files --stage" output.
335                  */
336                 errno = 0;
337                 ul = strtoul(buf.buf, &ptr, 8);
338                 if (ptr == buf.buf || *ptr != ' '
339                     || errno || (unsigned int) ul != ul)
340                         goto bad_line;
341                 mode = ul;
343                 tab = strchr(ptr, '\t');
344                 if (!tab || tab - ptr < 41)
345                         goto bad_line;
347                 if (tab[-2] == ' ' && '0' <= tab[-1] && tab[-1] <= '3') {
348                         stage = tab[-1] - '0';
349                         ptr = tab + 1; /* point at the head of path */
350                         tab = tab - 2; /* point at tail of sha1 */
351                 }
352                 else {
353                         stage = 0;
354                         ptr = tab + 1; /* point at the head of path */
355                 }
357                 if (get_sha1_hex(tab - 40, sha1) || tab[-41] != ' ')
358                         goto bad_line;
360                 path_name = ptr;
361                 if (line_termination && path_name[0] == '"') {
362                         strbuf_reset(&uq);
363                         if (unquote_c_style(&uq, path_name, NULL)) {
364                                 die("git update-index: bad quoting of path name");
365                         }
366                         path_name = uq.buf;
367                 }
369                 if (!verify_path(path_name)) {
370                         fprintf(stderr, "Ignoring path %s\n", path_name);
371                         continue;
372                 }
374                 if (!mode) {
375                         /* mode == 0 means there is no such path -- remove */
376                         if (remove_file_from_cache(path_name))
377                                 die("git update-index: unable to remove %s",
378                                     ptr);
379                 }
380                 else {
381                         /* mode ' ' sha1 '\t' name
382                          * ptr[-1] points at tab,
383                          * ptr[-41] is at the beginning of sha1
384                          */
385                         ptr[-42] = ptr[-1] = 0;
386                         if (add_cacheinfo(mode, sha1, path_name, stage))
387                                 die("git update-index: unable to update %s",
388                                     path_name);
389                 }
390                 continue;
392         bad_line:
393                 die("malformed index info %s", buf.buf);
394         }
395         strbuf_release(&buf);
396         strbuf_release(&uq);
399 static const char update_index_usage[] =
400 "git update-index [-q] [--add] [--replace] [--remove] [--unmerged] [--refresh] [--really-refresh] [--cacheinfo] [--chmod=(+|-)x] [--assume-unchanged] [--skip-worktree|--no-skip-worktree] [--info-only] [--force-remove] [--stdin] [--index-info] [--unresolve] [--again | -g] [--ignore-missing] [-z] [--verbose] [--] <file>...";
402 static unsigned char head_sha1[20];
403 static unsigned char merge_head_sha1[20];
405 static struct cache_entry *read_one_ent(const char *which,
406                                         unsigned char *ent, const char *path,
407                                         int namelen, int stage)
409         unsigned mode;
410         unsigned char sha1[20];
411         int size;
412         struct cache_entry *ce;
414         if (get_tree_entry(ent, path, sha1, &mode)) {
415                 if (which)
416                         error("%s: not in %s branch.", path, which);
417                 return NULL;
418         }
419         if (mode == S_IFDIR) {
420                 if (which)
421                         error("%s: not a blob in %s branch.", path, which);
422                 return NULL;
423         }
424         size = cache_entry_size(namelen);
425         ce = xcalloc(1, size);
427         hashcpy(ce->sha1, sha1);
428         memcpy(ce->name, path, namelen);
429         ce->ce_flags = create_ce_flags(namelen, stage);
430         ce->ce_mode = create_ce_mode(mode);
431         return ce;
434 static int unresolve_one(const char *path)
436         int namelen = strlen(path);
437         int pos;
438         int ret = 0;
439         struct cache_entry *ce_2 = NULL, *ce_3 = NULL;
441         /* See if there is such entry in the index. */
442         pos = cache_name_pos(path, namelen);
443         if (pos < 0) {
444                 /* If there isn't, either it is unmerged, or
445                  * resolved as "removed" by mistake.  We do not
446                  * want to do anything in the former case.
447                  */
448                 pos = -pos-1;
449                 if (pos < active_nr) {
450                         struct cache_entry *ce = active_cache[pos];
451                         if (ce_namelen(ce) == namelen &&
452                             !memcmp(ce->name, path, namelen)) {
453                                 fprintf(stderr,
454                                         "%s: skipping still unmerged path.\n",
455                                         path);
456                                 goto free_return;
457                         }
458                 }
459         }
461         /* Grab blobs from given path from HEAD and MERGE_HEAD,
462          * stuff HEAD version in stage #2,
463          * stuff MERGE_HEAD version in stage #3.
464          */
465         ce_2 = read_one_ent("our", head_sha1, path, namelen, 2);
466         ce_3 = read_one_ent("their", merge_head_sha1, path, namelen, 3);
468         if (!ce_2 || !ce_3) {
469                 ret = -1;
470                 goto free_return;
471         }
472         if (!hashcmp(ce_2->sha1, ce_3->sha1) &&
473             ce_2->ce_mode == ce_3->ce_mode) {
474                 fprintf(stderr, "%s: identical in both, skipping.\n",
475                         path);
476                 goto free_return;
477         }
479         remove_file_from_cache(path);
480         if (add_cache_entry(ce_2, ADD_CACHE_OK_TO_ADD)) {
481                 error("%s: cannot add our version to the index.", path);
482                 ret = -1;
483                 goto free_return;
484         }
485         if (!add_cache_entry(ce_3, ADD_CACHE_OK_TO_ADD))
486                 return 0;
487         error("%s: cannot add their version to the index.", path);
488         ret = -1;
489  free_return:
490         free(ce_2);
491         free(ce_3);
492         return ret;
495 static void read_head_pointers(void)
497         if (read_ref("HEAD", head_sha1))
498                 die("No HEAD -- no initial commit yet?");
499         if (read_ref("MERGE_HEAD", merge_head_sha1)) {
500                 fprintf(stderr, "Not in the middle of a merge.\n");
501                 exit(0);
502         }
505 static int do_unresolve(int ac, const char **av,
506                         const char *prefix, int prefix_length)
508         int i;
509         int err = 0;
511         /* Read HEAD and MERGE_HEAD; if MERGE_HEAD does not exist, we
512          * are not doing a merge, so exit with success status.
513          */
514         read_head_pointers();
516         for (i = 1; i < ac; i++) {
517                 const char *arg = av[i];
518                 const char *p = prefix_path(prefix, prefix_length, arg);
519                 err |= unresolve_one(p);
520                 if (p < arg || p > arg + strlen(arg))
521                         free((char *)p);
522         }
523         return err;
526 static int do_reupdate(int ac, const char **av,
527                        const char *prefix, int prefix_length)
529         /* Read HEAD and run update-index on paths that are
530          * merged and already different between index and HEAD.
531          */
532         int pos;
533         int has_head = 1;
534         const char **pathspec = get_pathspec(prefix, av + 1);
536         if (read_ref("HEAD", head_sha1))
537                 /* If there is no HEAD, that means it is an initial
538                  * commit.  Update everything in the index.
539                  */
540                 has_head = 0;
541  redo:
542         for (pos = 0; pos < active_nr; pos++) {
543                 struct cache_entry *ce = active_cache[pos];
544                 struct cache_entry *old = NULL;
545                 int save_nr;
547                 if (ce_stage(ce) || !ce_path_match(ce, pathspec))
548                         continue;
549                 if (has_head)
550                         old = read_one_ent(NULL, head_sha1,
551                                            ce->name, ce_namelen(ce), 0);
552                 if (old && ce->ce_mode == old->ce_mode &&
553                     !hashcmp(ce->sha1, old->sha1)) {
554                         free(old);
555                         continue; /* unchanged */
556                 }
557                 /* Be careful.  The working tree may not have the
558                  * path anymore, in which case, under 'allow_remove',
559                  * or worse yet 'allow_replace', active_nr may decrease.
560                  */
561                 save_nr = active_nr;
562                 update_one(ce->name + prefix_length, prefix, prefix_length);
563                 if (save_nr != active_nr)
564                         goto redo;
565         }
566         return 0;
569 int cmd_update_index(int argc, const char **argv, const char *prefix)
571         int i, newfd, entries, has_errors = 0, line_termination = '\n';
572         int allow_options = 1;
573         int read_from_stdin = 0;
574         int prefix_length = prefix ? strlen(prefix) : 0;
575         char set_executable_bit = 0;
576         unsigned int refresh_flags = 0;
577         int lock_error = 0;
578         struct lock_file *lock_file;
580         git_config(git_default_config, NULL);
582         /* We can't free this memory, it becomes part of a linked list parsed atexit() */
583         lock_file = xcalloc(1, sizeof(struct lock_file));
585         newfd = hold_locked_index(lock_file, 0);
586         if (newfd < 0)
587                 lock_error = errno;
589         entries = read_cache();
590         if (entries < 0)
591                 die("cache corrupted");
593         for (i = 1 ; i < argc; i++) {
594                 const char *path = argv[i];
595                 const char *p;
597                 if (allow_options && *path == '-') {
598                         if (!strcmp(path, "--")) {
599                                 allow_options = 0;
600                                 continue;
601                         }
602                         if (!strcmp(path, "-q")) {
603                                 refresh_flags |= REFRESH_QUIET;
604                                 continue;
605                         }
606                         if (!strcmp(path, "--ignore-submodules")) {
607                                 refresh_flags |= REFRESH_IGNORE_SUBMODULES;
608                                 continue;
609                         }
610                         if (!strcmp(path, "--add")) {
611                                 allow_add = 1;
612                                 continue;
613                         }
614                         if (!strcmp(path, "--replace")) {
615                                 allow_replace = 1;
616                                 continue;
617                         }
618                         if (!strcmp(path, "--remove")) {
619                                 allow_remove = 1;
620                                 continue;
621                         }
622                         if (!strcmp(path, "--unmerged")) {
623                                 refresh_flags |= REFRESH_UNMERGED;
624                                 continue;
625                         }
626                         if (!strcmp(path, "--refresh")) {
627                                 setup_work_tree();
628                                 has_errors |= refresh_cache(refresh_flags);
629                                 continue;
630                         }
631                         if (!strcmp(path, "--really-refresh")) {
632                                 setup_work_tree();
633                                 has_errors |= refresh_cache(REFRESH_REALLY | refresh_flags);
634                                 continue;
635                         }
636                         if (!strcmp(path, "--cacheinfo")) {
637                                 unsigned char sha1[20];
638                                 unsigned int mode;
640                                 if (i+3 >= argc)
641                                         die("git update-index: --cacheinfo <mode> <sha1> <path>");
643                                 if (strtoul_ui(argv[i+1], 8, &mode) ||
644                                     get_sha1_hex(argv[i+2], sha1) ||
645                                     add_cacheinfo(mode, sha1, argv[i+3], 0))
646                                         die("git update-index: --cacheinfo"
647                                             " cannot add %s", argv[i+3]);
648                                 i += 3;
649                                 continue;
650                         }
651                         if (!strcmp(path, "--chmod=-x") ||
652                             !strcmp(path, "--chmod=+x")) {
653                                 if (argc <= i+1)
654                                         die("git update-index: %s <path>", path);
655                                 set_executable_bit = path[8];
656                                 continue;
657                         }
658                         if (!strcmp(path, "--assume-unchanged")) {
659                                 mark_valid_only = MARK_FLAG;
660                                 continue;
661                         }
662                         if (!strcmp(path, "--no-assume-unchanged")) {
663                                 mark_valid_only = UNMARK_FLAG;
664                                 continue;
665                         }
666                         if (!strcmp(path, "--no-skip-worktree")) {
667                                 mark_skip_worktree_only = UNMARK_FLAG;
668                                 continue;
669                         }
670                         if (!strcmp(path, "--skip-worktree")) {
671                                 mark_skip_worktree_only = MARK_FLAG;
672                                 continue;
673                         }
674                         if (!strcmp(path, "--info-only")) {
675                                 info_only = 1;
676                                 continue;
677                         }
678                         if (!strcmp(path, "--force-remove")) {
679                                 force_remove = 1;
680                                 continue;
681                         }
682                         if (!strcmp(path, "-z")) {
683                                 line_termination = 0;
684                                 continue;
685                         }
686                         if (!strcmp(path, "--stdin")) {
687                                 if (i != argc - 1)
688                                         die("--stdin must be at the end");
689                                 read_from_stdin = 1;
690                                 break;
691                         }
692                         if (!strcmp(path, "--index-info")) {
693                                 if (i != argc - 1)
694                                         die("--index-info must be at the end");
695                                 allow_add = allow_replace = allow_remove = 1;
696                                 read_index_info(line_termination);
697                                 break;
698                         }
699                         if (!strcmp(path, "--unresolve")) {
700                                 has_errors = do_unresolve(argc - i, argv + i,
701                                                           prefix, prefix_length);
702                                 if (has_errors)
703                                         active_cache_changed = 0;
704                                 goto finish;
705                         }
706                         if (!strcmp(path, "--again") || !strcmp(path, "-g")) {
707                                 setup_work_tree();
708                                 has_errors = do_reupdate(argc - i, argv + i,
709                                                          prefix, prefix_length);
710                                 if (has_errors)
711                                         active_cache_changed = 0;
712                                 goto finish;
713                         }
714                         if (!strcmp(path, "--ignore-missing")) {
715                                 refresh_flags |= REFRESH_IGNORE_MISSING;
716                                 continue;
717                         }
718                         if (!strcmp(path, "--verbose")) {
719                                 verbose = 1;
720                                 continue;
721                         }
722                         if (!strcmp(path, "-h") || !strcmp(path, "--help"))
723                                 usage(update_index_usage);
724                         die("unknown option %s", path);
725                 }
726                 setup_work_tree();
727                 p = prefix_path(prefix, prefix_length, path);
728                 update_one(p, NULL, 0);
729                 if (set_executable_bit)
730                         chmod_path(set_executable_bit, p);
731                 if (p < path || p > path + strlen(path))
732                         free((char *)p);
733         }
734         if (read_from_stdin) {
735                 struct strbuf buf = STRBUF_INIT, nbuf = STRBUF_INIT;
737                 setup_work_tree();
738                 while (strbuf_getline(&buf, stdin, line_termination) != EOF) {
739                         const char *p;
740                         if (line_termination && buf.buf[0] == '"') {
741                                 strbuf_reset(&nbuf);
742                                 if (unquote_c_style(&nbuf, buf.buf, NULL))
743                                         die("line is badly quoted");
744                                 strbuf_swap(&buf, &nbuf);
745                         }
746                         p = prefix_path(prefix, prefix_length, buf.buf);
747                         update_one(p, NULL, 0);
748                         if (set_executable_bit)
749                                 chmod_path(set_executable_bit, p);
750                         if (p < buf.buf || p > buf.buf + buf.len)
751                                 free((char *)p);
752                 }
753                 strbuf_release(&nbuf);
754                 strbuf_release(&buf);
755         }
757  finish:
758         if (active_cache_changed) {
759                 if (newfd < 0) {
760                         if (refresh_flags & REFRESH_QUIET)
761                                 exit(128);
762                         unable_to_lock_index_die(get_index_file(), lock_error);
763                 }
764                 if (write_cache(newfd, active_cache, active_nr) ||
765                     commit_locked_index(lock_file))
766                         die("Unable to write new index file");
767         }
769         rollback_lock_file(lock_file);
771         return has_errors ? 1 : 0;