2 * GIT - The information manager from hell
4 * Copyright (C) Linus Torvalds, 2005
8 #include "cache-tree.h"
12 #include "resolve-undo.h"
13 #include "parse-options.h"
18 * Default to not allowing changes to the list of files. The
19 * tool doesn't actually care, but this makes it harder to add
20 * files to the revision control by mistake by doing something
21 * like "git update-index *" and suddenly having all the object
22 * files be revision controlled.
25 static int allow_remove;
26 static int allow_replace;
28 static int force_remove;
30 static int mark_valid_only;
31 static int mark_skip_worktree_only;
35 __attribute__((format (printf, 1, 2)))
36 static void report(const char *fmt, ...)
49 static int mark_ce_flags(const char *path, int flag, int mark)
51 int namelen = strlen(path);
52 int pos = cache_name_pos(path, namelen);
55 active_cache[pos]->ce_flags |= flag;
57 active_cache[pos]->ce_flags &= ~flag;
58 active_cache[pos]->ce_flags |= CE_UPDATE_IN_BASE;
59 cache_tree_invalidate_path(&the_index, path);
60 active_cache_changed |= CE_ENTRY_CHANGED;
66 static int remove_one_path(const char *path)
69 return error("%s: does not exist and --remove not passed", path);
70 if (remove_file_from_cache(path))
71 return error("%s: cannot remove from the index", path);
76 * Handle a path that couldn't be lstat'ed. It's either:
77 * - missing file (ENOENT or ENOTDIR). That's ok if we're
78 * supposed to be removing it and the removal actually
80 * - permission error. That's never ok.
82 static int process_lstat_error(const char *path, int err)
84 if (err == ENOENT || err == ENOTDIR)
85 return remove_one_path(path);
86 return error("lstat(\"%s\"): %s", path, strerror(errno));
89 static int add_one_path(const struct cache_entry *old, const char *path, int len, struct stat *st)
92 struct cache_entry *ce;
94 /* Was the old index entry already up-to-date? */
95 if (old && !ce_stage(old) && !ce_match_stat(old, st, 0))
98 size = cache_entry_size(len);
99 ce = xcalloc(1, size);
100 memcpy(ce->name, path, len);
101 ce->ce_flags = create_ce_flags(0);
102 ce->ce_namelen = len;
103 fill_stat_cache_info(ce, st);
104 ce->ce_mode = ce_mode_from_stat(old, st->st_mode);
106 if (index_path(ce->sha1, path, st,
107 info_only ? 0 : HASH_WRITE_OBJECT)) {
111 option = allow_add ? ADD_CACHE_OK_TO_ADD : 0;
112 option |= allow_replace ? ADD_CACHE_OK_TO_REPLACE : 0;
113 if (add_cache_entry(ce, option))
114 return error("%s: cannot add to the index - missing --add option?", path);
119 * Handle a path that was a directory. Four cases:
121 * - it's already a gitlink in the index, and we keep it that
122 * way, and update it if we can (if we cannot find the HEAD,
123 * we're going to keep it unchanged in the index!)
125 * - it's a *file* in the index, in which case it should be
126 * removed as a file if removal is allowed, since it doesn't
127 * exist as such any more. If removal isn't allowed, it's
130 * (NOTE! This is old and arguably fairly strange behaviour.
131 * We might want to make this an error unconditionally, and
132 * use "--force-remove" if you actually want to force removal).
134 * - it used to exist as a subdirectory (ie multiple files with
135 * this particular prefix) in the index, in which case it's wrong
136 * to try to update it as a directory.
138 * - it doesn't exist at all in the index, but it is a valid
139 * git directory, and it should be *added* as a gitlink.
141 static int process_directory(const char *path, int len, struct stat *st)
143 unsigned char sha1[20];
144 int pos = cache_name_pos(path, len);
146 /* Exact match: file or existing gitlink */
148 const struct cache_entry *ce = active_cache[pos];
149 if (S_ISGITLINK(ce->ce_mode)) {
151 /* Do nothing to the index if there is no HEAD! */
152 if (resolve_gitlink_ref(path, "HEAD", sha1) < 0)
155 return add_one_path(ce, path, len, st);
157 /* Should this be an unconditional error? */
158 return remove_one_path(path);
161 /* Inexact match: is there perhaps a subdirectory match? */
163 while (pos < active_nr) {
164 const struct cache_entry *ce = active_cache[pos++];
166 if (strncmp(ce->name, path, len))
168 if (ce->name[len] > '/')
170 if (ce->name[len] < '/')
173 /* Subdirectory match - error out */
174 return error("%s: is a directory - add individual files instead", path);
177 /* No match - should we add it as a gitlink? */
178 if (!resolve_gitlink_ref(path, "HEAD", sha1))
179 return add_one_path(NULL, path, len, st);
182 return error("%s: is a directory - add files inside instead", path);
185 static int process_path(const char *path)
189 const struct cache_entry *ce;
192 if (has_symlink_leading_path(path, len))
193 return error("'%s' is beyond a symbolic link", path);
195 pos = cache_name_pos(path, len);
196 ce = pos < 0 ? NULL : active_cache[pos];
197 if (ce && ce_skip_worktree(ce)) {
199 * working directory version is assumed "good"
200 * so updating it does not make sense.
201 * On the other hand, removing it from index should work
203 if (allow_remove && remove_file_from_cache(path))
204 return error("%s: cannot remove from the index", path);
209 * First things first: get the stat information, to decide
210 * what to do about the pathname!
212 if (lstat(path, &st) < 0)
213 return process_lstat_error(path, errno);
215 if (S_ISDIR(st.st_mode))
216 return process_directory(path, len, &st);
218 return add_one_path(ce, path, len, &st);
221 static int add_cacheinfo(unsigned int mode, const unsigned char *sha1,
222 const char *path, int stage)
224 int size, len, option;
225 struct cache_entry *ce;
227 if (!verify_path(path))
228 return error("Invalid path '%s'", path);
231 size = cache_entry_size(len);
232 ce = xcalloc(1, size);
234 hashcpy(ce->sha1, sha1);
235 memcpy(ce->name, path, len);
236 ce->ce_flags = create_ce_flags(stage);
237 ce->ce_namelen = len;
238 ce->ce_mode = create_ce_mode(mode);
239 if (assume_unchanged)
240 ce->ce_flags |= CE_VALID;
241 option = allow_add ? ADD_CACHE_OK_TO_ADD : 0;
242 option |= allow_replace ? ADD_CACHE_OK_TO_REPLACE : 0;
243 if (add_cache_entry(ce, option))
244 return error("%s: cannot add to the index - missing --add option?",
246 report("add '%s'", path);
250 static void chmod_path(int flip, const char *path)
253 struct cache_entry *ce;
256 pos = cache_name_pos(path, strlen(path));
259 ce = active_cache[pos];
265 ce->ce_mode |= 0111; break;
267 ce->ce_mode &= ~0111; break;
271 cache_tree_invalidate_path(&the_index, path);
272 ce->ce_flags |= CE_UPDATE_IN_BASE;
273 active_cache_changed |= CE_ENTRY_CHANGED;
274 report("chmod %cx '%s'", flip, path);
277 die("git update-index: cannot chmod %cx '%s'", flip, path);
280 static void update_one(const char *path)
282 if (!verify_path(path)) {
283 fprintf(stderr, "Ignoring path %s\n", path);
286 if (mark_valid_only) {
287 if (mark_ce_flags(path, CE_VALID, mark_valid_only == MARK_FLAG))
288 die("Unable to mark file %s", path);
291 if (mark_skip_worktree_only) {
292 if (mark_ce_flags(path, CE_SKIP_WORKTREE, mark_skip_worktree_only == MARK_FLAG))
293 die("Unable to mark file %s", path);
298 if (remove_file_from_cache(path))
299 die("git update-index: unable to remove %s", path);
300 report("remove '%s'", path);
303 if (process_path(path))
304 die("Unable to process path %s", path);
305 report("add '%s'", path);
308 static void read_index_info(int line_termination)
310 struct strbuf buf = STRBUF_INIT;
311 struct strbuf uq = STRBUF_INIT;
313 while (strbuf_getline(&buf, stdin, line_termination) != EOF) {
316 unsigned char sha1[20];
321 /* This reads lines formatted in one of three formats:
323 * (1) mode SP sha1 TAB path
324 * The first format is what "git apply --index-info"
325 * reports, and used to reconstruct a partial tree
326 * that is used for phony merge base tree when falling
327 * back on 3-way merge.
329 * (2) mode SP type SP sha1 TAB path
330 * The second format is to stuff "git ls-tree" output
331 * into the index file.
333 * (3) mode SP sha1 SP stage TAB path
334 * This format is to put higher order stages into the
335 * index file and matches "git ls-files --stage" output.
338 ul = strtoul(buf.buf, &ptr, 8);
339 if (ptr == buf.buf || *ptr != ' '
340 || errno || (unsigned int) ul != ul)
344 tab = strchr(ptr, '\t');
345 if (!tab || tab - ptr < 41)
348 if (tab[-2] == ' ' && '0' <= tab[-1] && tab[-1] <= '3') {
349 stage = tab[-1] - '0';
350 ptr = tab + 1; /* point at the head of path */
351 tab = tab - 2; /* point at tail of sha1 */
355 ptr = tab + 1; /* point at the head of path */
358 if (get_sha1_hex(tab - 40, sha1) || tab[-41] != ' ')
362 if (line_termination && path_name[0] == '"') {
364 if (unquote_c_style(&uq, path_name, NULL)) {
365 die("git update-index: bad quoting of path name");
370 if (!verify_path(path_name)) {
371 fprintf(stderr, "Ignoring path %s\n", path_name);
376 /* mode == 0 means there is no such path -- remove */
377 if (remove_file_from_cache(path_name))
378 die("git update-index: unable to remove %s",
382 /* mode ' ' sha1 '\t' name
383 * ptr[-1] points at tab,
384 * ptr[-41] is at the beginning of sha1
386 ptr[-42] = ptr[-1] = 0;
387 if (add_cacheinfo(mode, sha1, path_name, stage))
388 die("git update-index: unable to update %s",
394 die("malformed index info %s", buf.buf);
396 strbuf_release(&buf);
400 static const char * const update_index_usage[] = {
401 N_("git update-index [options] [--] [<file>...]"),
405 static unsigned char head_sha1[20];
406 static unsigned char merge_head_sha1[20];
408 static struct cache_entry *read_one_ent(const char *which,
409 unsigned char *ent, const char *path,
410 int namelen, int stage)
413 unsigned char sha1[20];
415 struct cache_entry *ce;
417 if (get_tree_entry(ent, path, sha1, &mode)) {
419 error("%s: not in %s branch.", path, which);
422 if (mode == S_IFDIR) {
424 error("%s: not a blob in %s branch.", path, which);
427 size = cache_entry_size(namelen);
428 ce = xcalloc(1, size);
430 hashcpy(ce->sha1, sha1);
431 memcpy(ce->name, path, namelen);
432 ce->ce_flags = create_ce_flags(stage);
433 ce->ce_namelen = namelen;
434 ce->ce_mode = create_ce_mode(mode);
438 static int unresolve_one(const char *path)
440 int namelen = strlen(path);
443 struct cache_entry *ce_2 = NULL, *ce_3 = NULL;
445 /* See if there is such entry in the index. */
446 pos = cache_name_pos(path, namelen);
449 pos = unmerge_cache_entry_at(pos);
450 if (pos < active_nr) {
451 const struct cache_entry *ce = active_cache[pos];
453 ce_namelen(ce) == namelen &&
454 !memcmp(ce->name, path, namelen))
457 /* no resolve-undo information; fall back */
459 /* If there isn't, either it is unmerged, or
460 * resolved as "removed" by mistake. We do not
461 * want to do anything in the former case.
464 if (pos < active_nr) {
465 const struct cache_entry *ce = active_cache[pos];
466 if (ce_namelen(ce) == namelen &&
467 !memcmp(ce->name, path, namelen)) {
469 "%s: skipping still unmerged path.\n",
476 /* Grab blobs from given path from HEAD and MERGE_HEAD,
477 * stuff HEAD version in stage #2,
478 * stuff MERGE_HEAD version in stage #3.
480 ce_2 = read_one_ent("our", head_sha1, path, namelen, 2);
481 ce_3 = read_one_ent("their", merge_head_sha1, path, namelen, 3);
483 if (!ce_2 || !ce_3) {
487 if (!hashcmp(ce_2->sha1, ce_3->sha1) &&
488 ce_2->ce_mode == ce_3->ce_mode) {
489 fprintf(stderr, "%s: identical in both, skipping.\n",
494 remove_file_from_cache(path);
495 if (add_cache_entry(ce_2, ADD_CACHE_OK_TO_ADD)) {
496 error("%s: cannot add our version to the index.", path);
500 if (!add_cache_entry(ce_3, ADD_CACHE_OK_TO_ADD))
502 error("%s: cannot add their version to the index.", path);
510 static void read_head_pointers(void)
512 if (read_ref("HEAD", head_sha1))
513 die("No HEAD -- no initial commit yet?");
514 if (read_ref("MERGE_HEAD", merge_head_sha1)) {
515 fprintf(stderr, "Not in the middle of a merge.\n");
520 static int do_unresolve(int ac, const char **av,
521 const char *prefix, int prefix_length)
526 /* Read HEAD and MERGE_HEAD; if MERGE_HEAD does not exist, we
527 * are not doing a merge, so exit with success status.
529 read_head_pointers();
531 for (i = 1; i < ac; i++) {
532 const char *arg = av[i];
533 const char *p = prefix_path(prefix, prefix_length, arg);
534 err |= unresolve_one(p);
535 if (p < arg || p > arg + strlen(arg))
541 static int do_reupdate(int ac, const char **av,
542 const char *prefix, int prefix_length)
544 /* Read HEAD and run update-index on paths that are
545 * merged and already different between index and HEAD.
549 struct pathspec pathspec;
551 parse_pathspec(&pathspec, 0,
555 if (read_ref("HEAD", head_sha1))
556 /* If there is no HEAD, that means it is an initial
557 * commit. Update everything in the index.
561 for (pos = 0; pos < active_nr; pos++) {
562 const struct cache_entry *ce = active_cache[pos];
563 struct cache_entry *old = NULL;
567 if (ce_stage(ce) || !ce_path_match(ce, &pathspec, NULL))
570 old = read_one_ent(NULL, head_sha1,
571 ce->name, ce_namelen(ce), 0);
572 if (old && ce->ce_mode == old->ce_mode &&
573 !hashcmp(ce->sha1, old->sha1)) {
575 continue; /* unchanged */
577 /* Be careful. The working tree may not have the
578 * path anymore, in which case, under 'allow_remove',
579 * or worse yet 'allow_replace', active_nr may decrease.
582 path = xstrdup(ce->name);
585 if (save_nr != active_nr)
588 free_pathspec(&pathspec);
592 struct refresh_params {
597 static int refresh(struct refresh_params *o, unsigned int flag)
600 read_cache_preload(NULL);
601 *o->has_errors |= refresh_cache(o->flags | flag);
605 static int refresh_callback(const struct option *opt,
606 const char *arg, int unset)
608 return refresh(opt->value, 0);
611 static int really_refresh_callback(const struct option *opt,
612 const char *arg, int unset)
614 return refresh(opt->value, REFRESH_REALLY);
617 static int chmod_callback(const struct option *opt,
618 const char *arg, int unset)
620 char *flip = opt->value;
621 if ((arg[0] != '-' && arg[0] != '+') || arg[1] != 'x' || arg[2])
622 return error("option 'chmod' expects \"+x\" or \"-x\"");
627 static int resolve_undo_clear_callback(const struct option *opt,
628 const char *arg, int unset)
630 resolve_undo_clear();
634 static int parse_new_style_cacheinfo(const char *arg,
636 unsigned char sha1[],
643 ul = strtoul(arg, &endp, 8);
644 if (errno || endp == arg || *endp != ',' || (unsigned int) ul != ul)
645 return -1; /* not a new-style cacheinfo */
648 if (get_sha1_hex(endp, sha1) || endp[40] != ',')
654 static int cacheinfo_callback(struct parse_opt_ctx_t *ctx,
655 const struct option *opt, int unset)
657 unsigned char sha1[20];
661 if (!parse_new_style_cacheinfo(ctx->argv[1], &mode, sha1, &path)) {
662 if (add_cacheinfo(mode, sha1, path, 0))
663 die("git update-index: --cacheinfo cannot add %s", path);
669 return error("option 'cacheinfo' expects <mode>,<sha1>,<path>");
670 if (strtoul_ui(*++ctx->argv, 8, &mode) ||
671 get_sha1_hex(*++ctx->argv, sha1) ||
672 add_cacheinfo(mode, sha1, *++ctx->argv, 0))
673 die("git update-index: --cacheinfo cannot add %s", *ctx->argv);
678 static int stdin_cacheinfo_callback(struct parse_opt_ctx_t *ctx,
679 const struct option *opt, int unset)
681 int *line_termination = opt->value;
684 return error("option '%s' must be the last argument", opt->long_name);
685 allow_add = allow_replace = allow_remove = 1;
686 read_index_info(*line_termination);
690 static int stdin_callback(struct parse_opt_ctx_t *ctx,
691 const struct option *opt, int unset)
693 int *read_from_stdin = opt->value;
696 return error("option '%s' must be the last argument", opt->long_name);
697 *read_from_stdin = 1;
701 static int unresolve_callback(struct parse_opt_ctx_t *ctx,
702 const struct option *opt, int flags)
704 int *has_errors = opt->value;
705 const char *prefix = startup_info->prefix;
707 /* consume remaining arguments. */
708 *has_errors = do_unresolve(ctx->argc, ctx->argv,
709 prefix, prefix ? strlen(prefix) : 0);
711 active_cache_changed = 0;
713 ctx->argv += ctx->argc - 1;
718 static int reupdate_callback(struct parse_opt_ctx_t *ctx,
719 const struct option *opt, int flags)
721 int *has_errors = opt->value;
722 const char *prefix = startup_info->prefix;
724 /* consume remaining arguments. */
726 *has_errors = do_reupdate(ctx->argc, ctx->argv,
727 prefix, prefix ? strlen(prefix) : 0);
729 active_cache_changed = 0;
731 ctx->argv += ctx->argc - 1;
736 int cmd_update_index(int argc, const char **argv, const char *prefix)
738 int newfd, entries, has_errors = 0, line_termination = '\n';
739 int read_from_stdin = 0;
740 int prefix_length = prefix ? strlen(prefix) : 0;
741 int preferred_index_format = 0;
742 char set_executable_bit = 0;
743 struct refresh_params refresh_args = {0, &has_errors};
745 struct lock_file *lock_file;
746 struct parse_opt_ctx_t ctx;
747 int parseopt_state = PARSE_OPT_UNKNOWN;
748 struct option options[] = {
749 OPT_BIT('q', NULL, &refresh_args.flags,
750 N_("continue refresh even when index needs update"),
752 OPT_BIT(0, "ignore-submodules", &refresh_args.flags,
753 N_("refresh: ignore submodules"),
754 REFRESH_IGNORE_SUBMODULES),
755 OPT_SET_INT(0, "add", &allow_add,
756 N_("do not ignore new files"), 1),
757 OPT_SET_INT(0, "replace", &allow_replace,
758 N_("let files replace directories and vice-versa"), 1),
759 OPT_SET_INT(0, "remove", &allow_remove,
760 N_("notice files missing from worktree"), 1),
761 OPT_BIT(0, "unmerged", &refresh_args.flags,
762 N_("refresh even if index contains unmerged entries"),
764 {OPTION_CALLBACK, 0, "refresh", &refresh_args, NULL,
765 N_("refresh stat information"),
766 PARSE_OPT_NOARG | PARSE_OPT_NONEG,
768 {OPTION_CALLBACK, 0, "really-refresh", &refresh_args, NULL,
769 N_("like --refresh, but ignore assume-unchanged setting"),
770 PARSE_OPT_NOARG | PARSE_OPT_NONEG,
771 really_refresh_callback},
772 {OPTION_LOWLEVEL_CALLBACK, 0, "cacheinfo", NULL,
773 N_("<mode>,<object>,<path>"),
774 N_("add the specified entry to the index"),
775 PARSE_OPT_NOARG | /* disallow --cacheinfo=<mode> form */
776 PARSE_OPT_NONEG | PARSE_OPT_LITERAL_ARGHELP,
777 (parse_opt_cb *) cacheinfo_callback},
778 {OPTION_CALLBACK, 0, "chmod", &set_executable_bit, N_("(+/-)x"),
779 N_("override the executable bit of the listed files"),
780 PARSE_OPT_NONEG | PARSE_OPT_LITERAL_ARGHELP,
782 {OPTION_SET_INT, 0, "assume-unchanged", &mark_valid_only, NULL,
783 N_("mark files as \"not changing\""),
784 PARSE_OPT_NOARG | PARSE_OPT_NONEG, NULL, MARK_FLAG},
785 {OPTION_SET_INT, 0, "no-assume-unchanged", &mark_valid_only, NULL,
786 N_("clear assumed-unchanged bit"),
787 PARSE_OPT_NOARG | PARSE_OPT_NONEG, NULL, UNMARK_FLAG},
788 {OPTION_SET_INT, 0, "skip-worktree", &mark_skip_worktree_only, NULL,
789 N_("mark files as \"index-only\""),
790 PARSE_OPT_NOARG | PARSE_OPT_NONEG, NULL, MARK_FLAG},
791 {OPTION_SET_INT, 0, "no-skip-worktree", &mark_skip_worktree_only, NULL,
792 N_("clear skip-worktree bit"),
793 PARSE_OPT_NOARG | PARSE_OPT_NONEG, NULL, UNMARK_FLAG},
794 OPT_SET_INT(0, "info-only", &info_only,
795 N_("add to index only; do not add content to object database"), 1),
796 OPT_SET_INT(0, "force-remove", &force_remove,
797 N_("remove named paths even if present in worktree"), 1),
798 OPT_SET_INT('z', NULL, &line_termination,
799 N_("with --stdin: input lines are terminated by null bytes"), '\0'),
800 {OPTION_LOWLEVEL_CALLBACK, 0, "stdin", &read_from_stdin, NULL,
801 N_("read list of paths to be updated from standard input"),
802 PARSE_OPT_NONEG | PARSE_OPT_NOARG,
803 (parse_opt_cb *) stdin_callback},
804 {OPTION_LOWLEVEL_CALLBACK, 0, "index-info", &line_termination, NULL,
805 N_("add entries from standard input to the index"),
806 PARSE_OPT_NONEG | PARSE_OPT_NOARG,
807 (parse_opt_cb *) stdin_cacheinfo_callback},
808 {OPTION_LOWLEVEL_CALLBACK, 0, "unresolve", &has_errors, NULL,
809 N_("repopulate stages #2 and #3 for the listed paths"),
810 PARSE_OPT_NONEG | PARSE_OPT_NOARG,
811 (parse_opt_cb *) unresolve_callback},
812 {OPTION_LOWLEVEL_CALLBACK, 'g', "again", &has_errors, NULL,
813 N_("only update entries that differ from HEAD"),
814 PARSE_OPT_NONEG | PARSE_OPT_NOARG,
815 (parse_opt_cb *) reupdate_callback},
816 OPT_BIT(0, "ignore-missing", &refresh_args.flags,
817 N_("ignore files missing from worktree"),
818 REFRESH_IGNORE_MISSING),
819 OPT_SET_INT(0, "verbose", &verbose,
820 N_("report actions to standard output"), 1),
821 {OPTION_CALLBACK, 0, "clear-resolve-undo", NULL, NULL,
822 N_("(for porcelains) forget saved unresolved conflicts"),
823 PARSE_OPT_NOARG | PARSE_OPT_NONEG,
824 resolve_undo_clear_callback},
825 OPT_INTEGER(0, "index-version", &preferred_index_format,
826 N_("write index in this format")),
830 if (argc == 2 && !strcmp(argv[1], "-h"))
831 usage_with_options(update_index_usage, options);
833 git_config(git_default_config, NULL);
835 /* We can't free this memory, it becomes part of a linked list parsed atexit() */
836 lock_file = xcalloc(1, sizeof(struct lock_file));
838 newfd = hold_locked_index(lock_file, 0);
842 entries = read_cache();
844 die("cache corrupted");
847 * Custom copy of parse_options() because we want to handle
848 * filename arguments as they come.
850 parse_options_start(&ctx, argc, argv, prefix,
851 options, PARSE_OPT_STOP_AT_NON_OPTION);
853 if (parseopt_state != PARSE_OPT_DONE)
854 parseopt_state = parse_options_step(&ctx, options,
858 switch (parseopt_state) {
861 case PARSE_OPT_NON_OPTION:
864 const char *path = ctx.argv[0];
868 p = prefix_path(prefix, prefix_length, path);
870 if (set_executable_bit)
871 chmod_path(set_executable_bit, p);
877 case PARSE_OPT_UNKNOWN:
878 if (ctx.argv[0][1] == '-')
879 error("unknown option '%s'", ctx.argv[0] + 2);
881 error("unknown switch '%c'", *ctx.opt);
882 usage_with_options(update_index_usage, options);
885 argc = parse_options_end(&ctx);
886 if (preferred_index_format) {
887 if (preferred_index_format < INDEX_FORMAT_LB ||
888 INDEX_FORMAT_UB < preferred_index_format)
889 die("index-version %d not in range: %d..%d",
890 preferred_index_format,
891 INDEX_FORMAT_LB, INDEX_FORMAT_UB);
893 if (the_index.version != preferred_index_format)
894 active_cache_changed |= SOMETHING_CHANGED;
895 the_index.version = preferred_index_format;
898 if (read_from_stdin) {
899 struct strbuf buf = STRBUF_INIT, nbuf = STRBUF_INIT;
902 while (strbuf_getline(&buf, stdin, line_termination) != EOF) {
904 if (line_termination && buf.buf[0] == '"') {
906 if (unquote_c_style(&nbuf, buf.buf, NULL))
907 die("line is badly quoted");
908 strbuf_swap(&buf, &nbuf);
910 p = prefix_path(prefix, prefix_length, buf.buf);
912 if (set_executable_bit)
913 chmod_path(set_executable_bit, p);
916 strbuf_release(&nbuf);
917 strbuf_release(&buf);
920 if (active_cache_changed) {
922 if (refresh_args.flags & REFRESH_QUIET)
924 unable_to_lock_index_die(get_index_file(), lock_error);
926 if (write_locked_index(&the_index, lock_file, COMMIT_LOCK))
927 die("Unable to write new index file");
930 rollback_lock_file(lock_file);
932 return has_errors ? 1 : 0;