2 * GIT - The information manager from hell
4 * Copyright (C) Linus Torvalds, 2005
5 * Copyright (C) Johannes Schindelin, 2005
13 static FILE *config_file;
14 static const char *config_file_name;
15 static int config_linenr;
16 static int config_file_eof;
17 static int zlib_compression_seen;
19 const char *config_exclusive_filename = NULL;
21 static int get_next_char(void)
27 if ((f = config_file) != NULL) {
30 /* DOS like systems */
47 static char *parse_value(void)
49 static char value[1024];
50 int quote = 0, comment = 0, len = 0, space = 0;
53 int c = get_next_char();
54 if (len >= sizeof(value) - 1)
64 if (isspace(c) && !quote) {
70 if (c == ';' || c == '#') {
75 for (; space; space--)
91 /* Some characters escape as themselves */
94 /* Reject unknown escape sequences */
109 static inline int iskeychar(int c)
111 return isalnum(c) || c == '-';
114 static int get_value(config_fn_t fn, void *data, char *name, unsigned int len)
119 /* Get the full name */
126 name[len++] = tolower(c);
131 while (c == ' ' || c == '\t')
138 value = parse_value();
142 return fn(name, value, data);
145 static int get_extended_base_var(char *name, int baselen, int c)
151 } while (isspace(c));
153 /* We require the format to be '[base "extension"]' */
156 name[baselen++] = '.';
159 int c = get_next_char();
170 if (baselen > MAXNAME / 2)
175 if (get_next_char() != ']')
180 static int get_base_var(char *name)
185 int c = get_next_char();
191 return get_extended_base_var(name, baselen, c);
192 if (!iskeychar(c) && c != '.')
194 if (baselen > MAXNAME / 2)
196 name[baselen++] = tolower(c);
200 static int git_parse_file(config_fn_t fn, void *data)
204 static char var[MAXNAME];
206 /* U+FEFF Byte Order Mark in UTF8 */
207 static const unsigned char *utf8_bom = (unsigned char *) "\xef\xbb\xbf";
208 const unsigned char *bomptr = utf8_bom;
211 int c = get_next_char();
212 if (bomptr && *bomptr) {
213 /* We are at the file beginning; skip UTF8-encoded BOM
214 * if present. Sane editors won't put this in on their
215 * own, but e.g. Windows Notepad will do it happily. */
216 if ((unsigned char) c == *bomptr) {
220 /* Do not tolerate partial BOM. */
221 if (bomptr != utf8_bom)
223 /* No BOM at file beginning. Cool. */
233 if (comment || isspace(c))
235 if (c == '#' || c == ';') {
240 baselen = get_base_var(var);
243 var[baselen++] = '.';
249 var[baselen] = tolower(c);
250 if (get_value(fn, data, var, baselen+1) < 0)
253 die("bad config file line %d in %s", config_linenr, config_file_name);
256 static int parse_unit_factor(const char *end, unsigned long *val)
260 else if (!strcasecmp(end, "k")) {
264 else if (!strcasecmp(end, "m")) {
268 else if (!strcasecmp(end, "g")) {
269 *val *= 1024 * 1024 * 1024;
275 static int git_parse_long(const char *value, long *ret)
277 if (value && *value) {
279 long val = strtol(value, &end, 0);
280 unsigned long factor = 1;
281 if (!parse_unit_factor(end, &factor))
289 int git_parse_ulong(const char *value, unsigned long *ret)
291 if (value && *value) {
293 unsigned long val = strtoul(value, &end, 0);
294 if (!parse_unit_factor(end, &val))
302 static void die_bad_config(const char *name)
304 if (config_file_name)
305 die("bad config value for '%s' in %s", name, config_file_name);
306 die("bad config value for '%s'", name);
309 int git_config_int(const char *name, const char *value)
312 if (!git_parse_long(value, &ret))
313 die_bad_config(name);
317 unsigned long git_config_ulong(const char *name, const char *value)
320 if (!git_parse_ulong(value, &ret))
321 die_bad_config(name);
325 int git_config_bool_or_int(const char *name, const char *value, int *is_bool)
332 if (!strcasecmp(value, "true") || !strcasecmp(value, "yes") || !strcasecmp(value, "on"))
334 if (!strcasecmp(value, "false") || !strcasecmp(value, "no") || !strcasecmp(value, "off"))
337 return git_config_int(name, value);
340 int git_config_bool(const char *name, const char *value)
343 return !!git_config_bool_or_int(name, value, &discard);
346 int git_config_string(const char **dest, const char *var, const char *value)
349 return config_error_nonbool(var);
350 *dest = xstrdup(value);
354 static int git_default_core_config(const char *var, const char *value)
356 /* This needs a better name */
357 if (!strcmp(var, "core.filemode")) {
358 trust_executable_bit = git_config_bool(var, value);
361 if (!strcmp(var, "core.trustctime")) {
362 trust_ctime = git_config_bool(var, value);
366 if (!strcmp(var, "core.quotepath")) {
367 quote_path_fully = git_config_bool(var, value);
371 if (!strcmp(var, "core.symlinks")) {
372 has_symlinks = git_config_bool(var, value);
376 if (!strcmp(var, "core.ignorecase")) {
377 ignore_case = git_config_bool(var, value);
381 if (!strcmp(var, "core.bare")) {
382 is_bare_repository_cfg = git_config_bool(var, value);
386 if (!strcmp(var, "core.ignorestat")) {
387 assume_unchanged = git_config_bool(var, value);
391 if (!strcmp(var, "core.prefersymlinkrefs")) {
392 prefer_symlink_refs = git_config_bool(var, value);
396 if (!strcmp(var, "core.logallrefupdates")) {
397 log_all_ref_updates = git_config_bool(var, value);
401 if (!strcmp(var, "core.warnambiguousrefs")) {
402 warn_ambiguous_refs = git_config_bool(var, value);
406 if (!strcmp(var, "core.loosecompression")) {
407 int level = git_config_int(var, value);
409 level = Z_DEFAULT_COMPRESSION;
410 else if (level < 0 || level > Z_BEST_COMPRESSION)
411 die("bad zlib compression level %d", level);
412 zlib_compression_level = level;
413 zlib_compression_seen = 1;
417 if (!strcmp(var, "core.compression")) {
418 int level = git_config_int(var, value);
420 level = Z_DEFAULT_COMPRESSION;
421 else if (level < 0 || level > Z_BEST_COMPRESSION)
422 die("bad zlib compression level %d", level);
423 core_compression_level = level;
424 core_compression_seen = 1;
425 if (!zlib_compression_seen)
426 zlib_compression_level = level;
430 if (!strcmp(var, "core.packedgitwindowsize")) {
431 int pgsz_x2 = getpagesize() * 2;
432 packed_git_window_size = git_config_int(var, value);
434 /* This value must be multiple of (pagesize * 2) */
435 packed_git_window_size /= pgsz_x2;
436 if (packed_git_window_size < 1)
437 packed_git_window_size = 1;
438 packed_git_window_size *= pgsz_x2;
442 if (!strcmp(var, "core.packedgitlimit")) {
443 packed_git_limit = git_config_int(var, value);
447 if (!strcmp(var, "core.deltabasecachelimit")) {
448 delta_base_cache_limit = git_config_int(var, value);
452 if (!strcmp(var, "core.autocrlf")) {
453 if (value && !strcasecmp(value, "input")) {
457 auto_crlf = git_config_bool(var, value);
461 if (!strcmp(var, "core.safecrlf")) {
462 if (value && !strcasecmp(value, "warn")) {
463 safe_crlf = SAFE_CRLF_WARN;
466 safe_crlf = git_config_bool(var, value);
470 if (!strcmp(var, "core.pager"))
471 return git_config_string(&pager_program, var, value);
473 if (!strcmp(var, "core.editor"))
474 return git_config_string(&editor_program, var, value);
476 if (!strcmp(var, "core.excludesfile"))
477 return git_config_string(&excludes_file, var, value);
479 if (!strcmp(var, "core.whitespace")) {
481 return config_error_nonbool(var);
482 whitespace_rule_cfg = parse_whitespace_rule(value);
486 if (!strcmp(var, "core.fsyncobjectfiles")) {
487 fsync_object_files = git_config_bool(var, value);
491 if (!strcmp(var, "core.preloadindex")) {
492 core_preload_index = git_config_bool(var, value);
496 if (!strcmp(var, "core.createobject")) {
497 if (!strcmp(value, "rename"))
498 object_creation_mode = OBJECT_CREATION_USES_RENAMES;
499 else if (!strcmp(value, "link"))
500 object_creation_mode = OBJECT_CREATION_USES_HARDLINKS;
502 die("Invalid mode for object creation: %s", value);
506 /* Add other config variables here and to Documentation/config.txt. */
510 static int git_default_user_config(const char *var, const char *value)
512 if (!strcmp(var, "user.name")) {
514 return config_error_nonbool(var);
515 strlcpy(git_default_name, value, sizeof(git_default_name));
516 if (git_default_email[0])
517 user_ident_explicitly_given = 1;
521 if (!strcmp(var, "user.email")) {
523 return config_error_nonbool(var);
524 strlcpy(git_default_email, value, sizeof(git_default_email));
525 if (git_default_name[0])
526 user_ident_explicitly_given = 1;
530 /* Add other config variables here and to Documentation/config.txt. */
534 static int git_default_i18n_config(const char *var, const char *value)
536 if (!strcmp(var, "i18n.commitencoding"))
537 return git_config_string(&git_commit_encoding, var, value);
539 if (!strcmp(var, "i18n.logoutputencoding"))
540 return git_config_string(&git_log_output_encoding, var, value);
542 /* Add other config variables here and to Documentation/config.txt. */
546 static int git_default_branch_config(const char *var, const char *value)
548 if (!strcmp(var, "branch.autosetupmerge")) {
549 if (value && !strcasecmp(value, "always")) {
550 git_branch_track = BRANCH_TRACK_ALWAYS;
553 git_branch_track = git_config_bool(var, value);
556 if (!strcmp(var, "branch.autosetuprebase")) {
558 return config_error_nonbool(var);
559 else if (!strcmp(value, "never"))
560 autorebase = AUTOREBASE_NEVER;
561 else if (!strcmp(value, "local"))
562 autorebase = AUTOREBASE_LOCAL;
563 else if (!strcmp(value, "remote"))
564 autorebase = AUTOREBASE_REMOTE;
565 else if (!strcmp(value, "always"))
566 autorebase = AUTOREBASE_ALWAYS;
568 return error("Malformed value for %s", var);
572 /* Add other config variables here and to Documentation/config.txt. */
576 static int git_default_push_config(const char *var, const char *value)
578 if (!strcmp(var, "push.default")) {
580 return config_error_nonbool(var);
581 else if (!strcmp(value, "nothing"))
582 push_default = PUSH_DEFAULT_NOTHING;
583 else if (!strcmp(value, "matching"))
584 push_default = PUSH_DEFAULT_MATCHING;
585 else if (!strcmp(value, "tracking"))
586 push_default = PUSH_DEFAULT_TRACKING;
587 else if (!strcmp(value, "current"))
588 push_default = PUSH_DEFAULT_CURRENT;
590 error("Malformed value for %s: %s", var, value);
591 return error("Must be one of nothing, matching, "
592 "tracking or current.");
597 /* Add other config variables here and to Documentation/config.txt. */
601 static int git_default_mailmap_config(const char *var, const char *value)
603 if (!strcmp(var, "mailmap.file"))
604 return git_config_string(&git_mailmap_file, var, value);
606 /* Add other config variables here and to Documentation/config.txt. */
610 int git_default_config(const char *var, const char *value, void *dummy)
612 if (!prefixcmp(var, "core."))
613 return git_default_core_config(var, value);
615 if (!prefixcmp(var, "user."))
616 return git_default_user_config(var, value);
618 if (!prefixcmp(var, "i18n."))
619 return git_default_i18n_config(var, value);
621 if (!prefixcmp(var, "branch."))
622 return git_default_branch_config(var, value);
624 if (!prefixcmp(var, "push."))
625 return git_default_push_config(var, value);
627 if (!prefixcmp(var, "mailmap."))
628 return git_default_mailmap_config(var, value);
630 if (!strcmp(var, "pager.color") || !strcmp(var, "color.pager")) {
631 pager_use_color = git_config_bool(var,value);
635 /* Add other config variables here and to Documentation/config.txt. */
639 int git_config_from_file(config_fn_t fn, const char *filename, void *data)
642 FILE *f = fopen(filename, "r");
647 config_file_name = filename;
650 ret = git_parse_file(fn, data);
652 config_file_name = NULL;
657 const char *git_etc_gitconfig(void)
659 static const char *system_wide;
661 system_wide = system_path(ETC_GITCONFIG);
665 static int git_env_bool(const char *k, int def)
667 const char *v = getenv(k);
668 return v ? git_config_bool(k, v) : def;
671 int git_config_system(void)
673 return !git_env_bool("GIT_CONFIG_NOSYSTEM", 0);
676 int git_config_global(void)
678 return !git_env_bool("GIT_CONFIG_NOGLOBAL", 0);
681 int git_config(config_fn_t fn, void *data)
683 int ret = 0, found = 0;
684 char *repo_config = NULL;
685 const char *home = NULL;
687 /* Setting $GIT_CONFIG makes git read _only_ the given config file. */
688 if (config_exclusive_filename)
689 return git_config_from_file(fn, config_exclusive_filename, data);
690 if (git_config_system() && !access(git_etc_gitconfig(), R_OK)) {
691 ret += git_config_from_file(fn, git_etc_gitconfig(),
696 home = getenv("HOME");
697 if (git_config_global() && home) {
698 char *user_config = xstrdup(mkpath("%s/.gitconfig", home));
699 if (!access(user_config, R_OK)) {
700 ret += git_config_from_file(fn, user_config, data);
706 repo_config = git_pathdup("config");
707 if (!access(repo_config, R_OK)) {
708 ret += git_config_from_file(fn, repo_config, data);
718 * Find all the stuff for git_config_set() below.
721 #define MAX_MATCHES 512
727 regex_t *value_regex;
729 size_t offset[MAX_MATCHES];
730 enum { START, SECTION_SEEN, SECTION_END_SEEN, KEY_SEEN } state;
734 static int matches(const char *key, const char *value)
736 return !strcmp(key, store.key) &&
737 (store.value_regex == NULL ||
738 (store.do_not_match ^
739 !regexec(store.value_regex, value, 0, NULL, 0)));
742 static int store_aux(const char *key, const char *value, void *cb)
747 switch (store.state) {
749 if (matches(key, value)) {
750 if (store.seen == 1 && store.multi_replace == 0) {
751 warning("%s has multiple values", key);
752 } else if (store.seen >= MAX_MATCHES) {
753 error("too many matches for %s", key);
757 store.offset[store.seen] = ftell(config_file);
763 * What we are looking for is in store.key (both
764 * section and var), and its section part is baselen
765 * long. We found key (again, both section and var).
766 * We would want to know if this key is in the same
767 * section as what we are looking for. We already
768 * know we are in the same section as what should
771 ep = strrchr(key, '.');
772 section_len = ep - key;
774 if ((section_len != store.baselen) ||
775 memcmp(key, store.key, section_len+1)) {
776 store.state = SECTION_END_SEEN;
781 * Do not increment matches: this is no match, but we
782 * just made sure we are in the desired section.
784 store.offset[store.seen] = ftell(config_file);
786 case SECTION_END_SEEN:
788 if (matches(key, value)) {
789 store.offset[store.seen] = ftell(config_file);
790 store.state = KEY_SEEN;
793 if (strrchr(key, '.') - key == store.baselen &&
794 !strncmp(key, store.key, store.baselen)) {
795 store.state = SECTION_SEEN;
796 store.offset[store.seen] = ftell(config_file);
803 static int write_error(const char *filename)
805 error("failed to write new configuration file %s", filename);
807 /* Same error code as "failed to rename". */
811 static int store_write_section(int fd, const char *key)
815 struct strbuf sb = STRBUF_INIT;
817 dot = memchr(key, '.', store.baselen);
819 strbuf_addf(&sb, "[%.*s \"", (int)(dot - key), key);
820 for (i = dot - key + 1; i < store.baselen; i++) {
821 if (key[i] == '"' || key[i] == '\\')
822 strbuf_addch(&sb, '\\');
823 strbuf_addch(&sb, key[i]);
825 strbuf_addstr(&sb, "\"]\n");
827 strbuf_addf(&sb, "[%.*s]\n", store.baselen, key);
830 success = write_in_full(fd, sb.buf, sb.len) == sb.len;
836 static int store_write_pair(int fd, const char *key, const char *value)
839 int length = strlen(key + store.baselen + 1);
840 const char *quote = "";
841 struct strbuf sb = STRBUF_INIT;
844 * Check to see if the value needs to be surrounded with a dq pair.
845 * Note that problematic characters are always backslash-quoted; this
846 * check is about not losing leading or trailing SP and strings that
847 * follow beginning-of-comment characters (i.e. ';' and '#') by the
848 * configuration parser.
852 for (i = 0; value[i]; i++)
853 if (value[i] == ';' || value[i] == '#')
855 if (i && value[i - 1] == ' ')
858 strbuf_addf(&sb, "\t%.*s = %s",
859 length, key + store.baselen + 1, quote);
861 for (i = 0; value[i]; i++)
864 strbuf_addstr(&sb, "\\n");
867 strbuf_addstr(&sb, "\\t");
871 strbuf_addch(&sb, '\\');
873 strbuf_addch(&sb, value[i]);
876 strbuf_addf(&sb, "%s\n", quote);
878 success = write_in_full(fd, sb.buf, sb.len) == sb.len;
884 static ssize_t find_beginning_of_line(const char *contents, size_t size,
885 size_t offset_, int *found_bracket)
887 size_t equal_offset = size, bracket_offset = size;
891 for (offset = offset_-2; offset > 0
892 && contents[offset] != '\n'; offset--)
893 switch (contents[offset]) {
894 case '=': equal_offset = offset; break;
895 case ']': bracket_offset = offset; break;
897 if (offset > 0 && contents[offset-1] == '\\') {
901 if (bracket_offset < equal_offset) {
903 offset = bracket_offset+1;
910 int git_config_set(const char *key, const char *value)
912 return git_config_set_multivar(key, value, NULL, 0);
916 * If value==NULL, unset in (remove from) config,
917 * if value_regex!=NULL, disregard key/value pairs where value does not match.
918 * if multi_replace==0, nothing, or only one matching key/value is replaced,
919 * else all matching key/values (regardless how many) are removed,
920 * before the new pair is written.
922 * Returns 0 on success.
924 * This function does this:
926 * - it locks the config file by creating ".git/config.lock"
928 * - it then parses the config using store_aux() as validator to find
929 * the position on the key/value pair to replace. If it is to be unset,
930 * it must be found exactly once.
932 * - the config file is mmap()ed and the part before the match (if any) is
933 * written to the lock file, then the changed part and the rest.
935 * - the config file is removed and the lock file rename()d to it.
938 int git_config_set_multivar(const char *key, const char *value,
939 const char *value_regex, int multi_replace)
944 char *config_filename;
945 struct lock_file *lock = NULL;
946 const char *last_dot = strrchr(key, '.');
948 if (config_exclusive_filename)
949 config_filename = xstrdup(config_exclusive_filename);
951 config_filename = git_pathdup("config");
954 * Since "key" actually contains the section name and the real
955 * key name separated by a dot, we have to know where the dot is.
958 if (last_dot == NULL) {
959 error("key does not contain a section: %s", key);
963 store.baselen = last_dot - key;
965 store.multi_replace = multi_replace;
968 * Validate the key and while at it, lower case it for matching.
970 store.key = xmalloc(strlen(key) + 1);
972 for (i = 0; key[i]; i++) {
973 unsigned char c = key[i];
976 /* Leave the extended basename untouched.. */
977 if (!dot || i > store.baselen) {
978 if (!iskeychar(c) || (i == store.baselen+1 && !isalpha(c))) {
979 error("invalid key: %s", key);
985 } else if (c == '\n') {
986 error("invalid key (newline): %s", key);
996 * The lock serves a purpose in addition to locking: the new
997 * contents of .git/config will be written into it.
999 lock = xcalloc(sizeof(struct lock_file), 1);
1000 fd = hold_lock_file_for_update(lock, config_filename, 0);
1002 error("could not lock config file %s: %s", config_filename, strerror(errno));
1009 * If .git/config does not exist yet, write a minimal version.
1011 in_fd = open(config_filename, O_RDONLY);
1015 if ( ENOENT != errno ) {
1016 error("opening %s: %s", config_filename,
1018 ret = 3; /* same as "invalid config file" */
1021 /* if nothing to unset, error out */
1022 if (value == NULL) {
1027 store.key = (char *)key;
1028 if (!store_write_section(fd, key) ||
1029 !store_write_pair(fd, key, value))
1034 size_t contents_sz, copy_begin, copy_end;
1035 int i, new_line = 0;
1037 if (value_regex == NULL)
1038 store.value_regex = NULL;
1040 if (value_regex[0] == '!') {
1041 store.do_not_match = 1;
1044 store.do_not_match = 0;
1046 store.value_regex = (regex_t*)xmalloc(sizeof(regex_t));
1047 if (regcomp(store.value_regex, value_regex,
1049 error("invalid pattern: %s", value_regex);
1050 free(store.value_regex);
1056 store.offset[0] = 0;
1057 store.state = START;
1061 * After this, store.offset will contain the *end* offset
1062 * of the last match, or remain at 0 if no match was found.
1063 * As a side effect, we make sure to transform only a valid
1064 * existing config file.
1066 if (git_config_from_file(store_aux, config_filename, NULL)) {
1067 error("invalid config file %s", config_filename);
1069 if (store.value_regex != NULL) {
1070 regfree(store.value_regex);
1071 free(store.value_regex);
1078 if (store.value_regex != NULL) {
1079 regfree(store.value_regex);
1080 free(store.value_regex);
1083 /* if nothing to unset, or too many matches, error out */
1084 if ((store.seen == 0 && value == NULL) ||
1085 (store.seen > 1 && multi_replace == 0)) {
1091 contents_sz = xsize_t(st.st_size);
1092 contents = xmmap(NULL, contents_sz, PROT_READ,
1093 MAP_PRIVATE, in_fd, 0);
1096 if (store.seen == 0)
1099 for (i = 0, copy_begin = 0; i < store.seen; i++) {
1100 if (store.offset[i] == 0) {
1101 store.offset[i] = copy_end = contents_sz;
1102 } else if (store.state != KEY_SEEN) {
1103 copy_end = store.offset[i];
1105 copy_end = find_beginning_of_line(
1106 contents, contents_sz,
1107 store.offset[i]-2, &new_line);
1109 if (copy_end > 0 && contents[copy_end-1] != '\n')
1112 /* write the first part of the config */
1113 if (copy_end > copy_begin) {
1114 if (write_in_full(fd, contents + copy_begin,
1115 copy_end - copy_begin) <
1116 copy_end - copy_begin)
1119 write_in_full(fd, "\n", 1) != 1)
1122 copy_begin = store.offset[i];
1125 /* write the pair (value == NULL means unset) */
1126 if (value != NULL) {
1127 if (store.state == START) {
1128 if (!store_write_section(fd, key))
1131 if (!store_write_pair(fd, key, value))
1135 /* write the rest of the config */
1136 if (copy_begin < contents_sz)
1137 if (write_in_full(fd, contents + copy_begin,
1138 contents_sz - copy_begin) <
1139 contents_sz - copy_begin)
1142 munmap(contents, contents_sz);
1145 if (commit_lock_file(lock) < 0) {
1146 error("could not commit config file %s", config_filename);
1152 * lock is committed, so don't try to roll it back below.
1153 * NOTE: Since lockfile.c keeps a linked list of all created
1154 * lock_file structures, it isn't safe to free(lock). It's
1155 * better to just leave it hanging around.
1162 rollback_lock_file(lock);
1163 free(config_filename);
1167 ret = write_error(lock->filename);
1172 static int section_name_match (const char *buf, const char *name)
1174 int i = 0, j = 0, dot = 0;
1175 for (; buf[i] && buf[i] != ']'; i++) {
1176 if (!dot && isspace(buf[i])) {
1178 if (name[j++] != '.')
1180 for (i++; isspace(buf[i]); i++)
1186 if (buf[i] == '\\' && dot)
1188 else if (buf[i] == '"' && dot) {
1189 for (i++; isspace(buf[i]); i++)
1193 if (buf[i] != name[j++])
1196 return (buf[i] == ']' && name[j] == 0);
1199 /* if new_name == NULL, the section is removed instead */
1200 int git_config_rename_section(const char *old_name, const char *new_name)
1202 int ret = 0, remove = 0;
1203 char *config_filename;
1204 struct lock_file *lock = xcalloc(sizeof(struct lock_file), 1);
1208 if (config_exclusive_filename)
1209 config_filename = xstrdup(config_exclusive_filename);
1211 config_filename = git_pathdup("config");
1212 out_fd = hold_lock_file_for_update(lock, config_filename, 0);
1214 ret = error("could not lock config file %s", config_filename);
1218 if (!(config_file = fopen(config_filename, "rb"))) {
1219 /* no config file means nothing to rename, no error */
1220 goto unlock_and_out;
1223 while (fgets(buf, sizeof(buf), config_file)) {
1226 for (i = 0; buf[i] && isspace(buf[i]); i++)
1228 if (buf[i] == '[') {
1229 /* it's a section */
1230 if (section_name_match (&buf[i+1], old_name)) {
1232 if (new_name == NULL) {
1236 store.baselen = strlen(new_name);
1237 if (!store_write_section(out_fd, new_name)) {
1238 ret = write_error(lock->filename);
1247 length = strlen(buf);
1248 if (write_in_full(out_fd, buf, length) != length) {
1249 ret = write_error(lock->filename);
1253 fclose(config_file);
1255 if (commit_lock_file(lock) < 0)
1256 ret = error("could not commit config file %s", config_filename);
1258 free(config_filename);
1263 * Call this to report error for your variable that should not
1264 * get a boolean value (i.e. "[my] var" means "true").
1266 int config_error_nonbool(const char *var)
1268 return error("Missing value for '%s'", var);