/* * GIT - The information manager from hell * * Copyright (C) Linus Torvalds, 2005 */ #define USE_THE_INDEX_COMPATIBILITY_MACROS #include "cache.h" #include "config.h" #include "lockfile.h" #include "quote.h" #include "cache-tree.h" #include "tree-walk.h" #include "builtin.h" #include "refs.h" #include "resolve-undo.h" #include "parse-options.h" #include "pathspec.h" #include "dir.h" #include "split-index.h" #include "fsmonitor.h" /* * Default to not allowing changes to the list of files. The * tool doesn't actually care, but this makes it harder to add * files to the revision control by mistake by doing something * like "git update-index *" and suddenly having all the object * files be revision controlled. */ static int allow_add; static int allow_remove; static int allow_replace; static int info_only; static int force_remove; static int verbose; static int mark_valid_only; static int mark_skip_worktree_only; static int mark_fsmonitor_only; static int ignore_skip_worktree_entries; #define MARK_FLAG 1 #define UNMARK_FLAG 2 static struct strbuf mtime_dir = STRBUF_INIT; /* Untracked cache mode */ enum uc_mode { UC_UNSPECIFIED = -1, UC_DISABLE = 0, UC_ENABLE, UC_TEST, UC_FORCE }; __attribute__((format (printf, 1, 2))) static void report(const char *fmt, ...) { va_list vp; if (!verbose) return; va_start(vp, fmt); vprintf(fmt, vp); putchar('\n'); va_end(vp); } static void remove_test_directory(void) { if (mtime_dir.len) remove_dir_recursively(&mtime_dir, 0); } static const char *get_mtime_path(const char *path) { static struct strbuf sb = STRBUF_INIT; strbuf_reset(&sb); strbuf_addf(&sb, "%s/%s", mtime_dir.buf, path); return sb.buf; } static void xmkdir(const char *path) { path = get_mtime_path(path); if (mkdir(path, 0700)) die_errno(_("failed to create directory %s"), path); } static int xstat_mtime_dir(struct stat *st) { if (stat(mtime_dir.buf, st)) die_errno(_("failed to stat %s"), mtime_dir.buf); return 0; } static int create_file(const char *path) { int fd; path = get_mtime_path(path); fd = open(path, O_CREAT | O_RDWR, 0644); if (fd < 0) die_errno(_("failed to create file %s"), path); return fd; } static void xunlink(const char *path) { path = get_mtime_path(path); if (unlink(path)) die_errno(_("failed to delete file %s"), path); } static void xrmdir(const char *path) { path = get_mtime_path(path); if (rmdir(path)) die_errno(_("failed to delete directory %s"), path); } static void avoid_racy(void) { /* * not use if we could usleep(10) if USE_NSEC is defined. The * field nsec could be there, but the OS could choose to * ignore it? */ sleep(1); } static int test_if_untracked_cache_is_supported(void) { struct stat st; struct stat_data base; int fd, ret = 0; char *cwd; strbuf_addstr(&mtime_dir, "mtime-test-XXXXXX"); if (!mkdtemp(mtime_dir.buf)) die_errno("Could not make temporary directory"); cwd = xgetcwd(); fprintf(stderr, _("Testing mtime in '%s' "), cwd); free(cwd); atexit(remove_test_directory); xstat_mtime_dir(&st); fill_stat_data(&base, &st); fputc('.', stderr); avoid_racy(); fd = create_file("newfile"); xstat_mtime_dir(&st); if (!match_stat_data(&base, &st)) { close(fd); fputc('\n', stderr); fprintf_ln(stderr,_("directory stat info does not " "change after adding a new file")); goto done; } fill_stat_data(&base, &st); fputc('.', stderr); avoid_racy(); xmkdir("new-dir"); xstat_mtime_dir(&st); if (!match_stat_data(&base, &st)) { close(fd); fputc('\n', stderr); fprintf_ln(stderr, _("directory stat info does not change " "after adding a new directory")); goto done; } fill_stat_data(&base, &st); fputc('.', stderr); avoid_racy(); write_or_die(fd, "data", 4); close(fd); xstat_mtime_dir(&st); if (match_stat_data(&base, &st)) { fputc('\n', stderr); fprintf_ln(stderr, _("directory stat info changes " "after updating a file")); goto done; } fputc('.', stderr); avoid_racy(); close(create_file("new-dir/new")); xstat_mtime_dir(&st); if (match_stat_data(&base, &st)) { fputc('\n', stderr); fprintf_ln(stderr, _("directory stat info changes after " "adding a file inside subdirectory")); goto done; } fputc('.', stderr); avoid_racy(); xunlink("newfile"); xstat_mtime_dir(&st); if (!match_stat_data(&base, &st)) { fputc('\n', stderr); fprintf_ln(stderr, _("directory stat info does not " "change after deleting a file")); goto done; } fill_stat_data(&base, &st); fputc('.', stderr); avoid_racy(); xunlink("new-dir/new"); xrmdir("new-dir"); xstat_mtime_dir(&st); if (!match_stat_data(&base, &st)) { fputc('\n', stderr); fprintf_ln(stderr, _("directory stat info does not " "change after deleting a directory")); goto done; } if (rmdir(mtime_dir.buf)) die_errno(_("failed to delete directory %s"), mtime_dir.buf); fprintf_ln(stderr, _(" OK")); ret = 1; done: strbuf_release(&mtime_dir); return ret; } static int mark_ce_flags(const char *path, int flag, int mark) { int namelen = strlen(path); int pos = cache_name_pos(path, namelen); if (0 <= pos) { mark_fsmonitor_invalid(&the_index, active_cache[pos]); if (mark) active_cache[pos]->ce_flags |= flag; else active_cache[pos]->ce_flags &= ~flag; active_cache[pos]->ce_flags |= CE_UPDATE_IN_BASE; cache_tree_invalidate_path(&the_index, path); active_cache_changed |= CE_ENTRY_CHANGED; return 0; } return -1; } static int remove_one_path(const char *path) { if (!allow_remove) return error("%s: does not exist and --remove not passed", path); if (remove_file_from_cache(path)) return error("%s: cannot remove from the index", path); return 0; } /* * Handle a path that couldn't be lstat'ed. It's either: * - missing file (ENOENT or ENOTDIR). That's ok if we're * supposed to be removing it and the removal actually * succeeds. * - permission error. That's never ok. */ static int process_lstat_error(const char *path, int err) { if (is_missing_file_error(err)) return remove_one_path(path); return error("lstat(\"%s\"): %s", path, strerror(err)); } static int add_one_path(const struct cache_entry *old, const char *path, int len, struct stat *st) { int option; struct cache_entry *ce; /* Was the old index entry already up-to-date? */ if (old && !ce_stage(old) && !ce_match_stat(old, st, 0)) return 0; ce = make_empty_cache_entry(&the_index, len); memcpy(ce->name, path, len); ce->ce_flags = create_ce_flags(0); ce->ce_namelen = len; fill_stat_cache_info(&the_index, ce, st); ce->ce_mode = ce_mode_from_stat(old, st->st_mode); if (index_path(&the_index, &ce->oid, path, st, info_only ? 0 : HASH_WRITE_OBJECT)) { discard_cache_entry(ce); return -1; } option = allow_add ? ADD_CACHE_OK_TO_ADD : 0; option |= allow_replace ? ADD_CACHE_OK_TO_REPLACE : 0; if (add_cache_entry(ce, option)) { discard_cache_entry(ce); return error("%s: cannot add to the index - missing --add option?", path); } return 0; } /* * Handle a path that was a directory. Four cases: * * - it's already a gitlink in the index, and we keep it that * way, and update it if we can (if we cannot find the HEAD, * we're going to keep it unchanged in the index!) * * - it's a *file* in the index, in which case it should be * removed as a file if removal is allowed, since it doesn't * exist as such any more. If removal isn't allowed, it's * an error. * * (NOTE! This is old and arguably fairly strange behaviour. * We might want to make this an error unconditionally, and * use "--force-remove" if you actually want to force removal). * * - it used to exist as a subdirectory (ie multiple files with * this particular prefix) in the index, in which case it's wrong * to try to update it as a directory. * * - it doesn't exist at all in the index, but it is a valid * git directory, and it should be *added* as a gitlink. */ static int process_directory(const char *path, int len, struct stat *st) { struct object_id oid; int pos = cache_name_pos(path, len); /* Exact match: file or existing gitlink */ if (pos >= 0) { const struct cache_entry *ce = active_cache[pos]; if (S_ISGITLINK(ce->ce_mode)) { /* Do nothing to the index if there is no HEAD! */ if (resolve_gitlink_ref(path, "HEAD", &oid) < 0) return 0; return add_one_path(ce, path, len, st); } /* Should this be an unconditional error? */ return remove_one_path(path); } /* Inexact match: is there perhaps a subdirectory match? */ pos = -pos-1; while (pos < active_nr) { const struct cache_entry *ce = active_cache[pos++]; if (strncmp(ce->name, path, len)) break; if (ce->name[len] > '/') break; if (ce->name[len] < '/') continue; /* Subdirectory match - error out */ return error("%s: is a directory - add individual files instead", path); } /* No match - should we add it as a gitlink? */ if (!resolve_gitlink_ref(path, "HEAD", &oid)) return add_one_path(NULL, path, len, st); /* Error out. */ return error("%s: is a directory - add files inside instead", path); } static int process_path(const char *path, struct stat *st, int stat_errno) { int pos, len; const struct cache_entry *ce; len = strlen(path); if (has_symlink_leading_path(path, len)) return error("'%s' is beyond a symbolic link", path); pos = cache_name_pos(path, len); ce = pos < 0 ? NULL : active_cache[pos]; if (ce && ce_skip_worktree(ce)) { /* * working directory version is assumed "good" * so updating it does not make sense. * On the other hand, removing it from index should work */ if (!ignore_skip_worktree_entries && allow_remove && remove_file_from_cache(path)) return error("%s: cannot remove from the index", path); return 0; } /* * First things first: get the stat information, to decide * what to do about the pathname! */ if (stat_errno) return process_lstat_error(path, stat_errno); if (S_ISDIR(st->st_mode)) return process_directory(path, len, st); return add_one_path(ce, path, len, st); } static int add_cacheinfo(unsigned int mode, const struct object_id *oid, const char *path, int stage) { int len, option; struct cache_entry *ce; if (!verify_path(path, mode)) return error("Invalid path '%s'", path); len = strlen(path); ce = make_empty_cache_entry(&the_index, len); oidcpy(&ce->oid, oid); memcpy(ce->name, path, len); ce->ce_flags = create_ce_flags(stage); ce->ce_namelen = len; ce->ce_mode = create_ce_mode(mode); if (assume_unchanged) ce->ce_flags |= CE_VALID; option = allow_add ? ADD_CACHE_OK_TO_ADD : 0; option |= allow_replace ? ADD_CACHE_OK_TO_REPLACE : 0; if (add_cache_entry(ce, option)) return error("%s: cannot add to the index - missing --add option?", path); report("add '%s'", path); return 0; } static void chmod_path(char flip, const char *path) { int pos; struct cache_entry *ce; pos = cache_name_pos(path, strlen(path)); if (pos < 0) goto fail; ce = active_cache[pos]; if (chmod_cache_entry(ce, flip) < 0) goto fail; report("chmod %cx '%s'", flip, path); return; fail: die("git update-index: cannot chmod %cx '%s'", flip, path); } static void update_one(const char *path) { int stat_errno = 0; struct stat st; if (mark_valid_only || mark_skip_worktree_only || force_remove || mark_fsmonitor_only) st.st_mode = 0; else if (lstat(path, &st) < 0) { st.st_mode = 0; stat_errno = errno; } /* else stat is valid */ if (!verify_path(path, st.st_mode)) { fprintf(stderr, "Ignoring path %s\n", path); return; } if (mark_valid_only) { if (mark_ce_flags(path, CE_VALID, mark_valid_only == MARK_FLAG)) die("Unable to mark file %s", path); return; } if (mark_skip_worktree_only) { if (mark_ce_flags(path, CE_SKIP_WORKTREE, mark_skip_worktree_only == MARK_FLAG)) die("Unable to mark file %s", path); return; } if (mark_fsmonitor_only) { if (mark_ce_flags(path, CE_FSMONITOR_VALID, mark_fsmonitor_only == MARK_FLAG)) die("Unable to mark file %s", path); return; } if (force_remove) { if (remove_file_from_cache(path)) die("git update-index: unable to remove %s", path); report("remove '%s'", path); return; } if (process_path(path, &st, stat_errno)) die("Unable to process path %s", path); report("add '%s'", path); } static void read_index_info(int nul_term_line) { const int hexsz = the_hash_algo->hexsz; struct strbuf buf = STRBUF_INIT; struct strbuf uq = STRBUF_INIT; strbuf_getline_fn getline_fn; getline_fn = nul_term_line ? strbuf_getline_nul : strbuf_getline_lf; while (getline_fn(&buf, stdin) != EOF) { char *ptr, *tab; char *path_name; struct object_id oid; unsigned int mode; unsigned long ul; int stage; /* This reads lines formatted in one of three formats: * * (1) mode SP sha1 TAB path * The first format is what "git apply --index-info" * reports, and used to reconstruct a partial tree * that is used for phony merge base tree when falling * back on 3-way merge. * * (2) mode SP type SP sha1 TAB path * The second format is to stuff "git ls-tree" output * into the index file. * * (3) mode SP sha1 SP stage TAB path * This format is to put higher order stages into the * index file and matches "git ls-files --stage" output. */ errno = 0; ul = strtoul(buf.buf, &ptr, 8); if (ptr == buf.buf || *ptr != ' ' || errno || (unsigned int) ul != ul) goto bad_line; mode = ul; tab = strchr(ptr, '\t'); if (!tab || tab - ptr < hexsz + 1) goto bad_line; if (tab[-2] == ' ' && '0' <= tab[-1] && tab[-1] <= '3') { stage = tab[-1] - '0'; ptr = tab + 1; /* point at the head of path */ tab = tab - 2; /* point at tail of sha1 */ } else { stage = 0; ptr = tab + 1; /* point at the head of path */ } if (get_oid_hex(tab - hexsz, &oid) || tab[-(hexsz + 1)] != ' ') goto bad_line; path_name = ptr; if (!nul_term_line && path_name[0] == '"') { strbuf_reset(&uq); if (unquote_c_style(&uq, path_name, NULL)) { die("git update-index: bad quoting of path name"); } path_name = uq.buf; } if (!verify_path(path_name, mode)) { fprintf(stderr, "Ignoring path %s\n", path_name); continue; } if (!mode) { /* mode == 0 means there is no such path -- remove */ if (remove_file_from_cache(path_name)) die("git update-index: unable to remove %s", ptr); } else { /* mode ' ' sha1 '\t' name * ptr[-1] points at tab, * ptr[-41] is at the beginning of sha1 */ ptr[-(hexsz + 2)] = ptr[-1] = 0; if (add_cacheinfo(mode, &oid, path_name, stage)) die("git update-index: unable to update %s", path_name); } continue; bad_line: die("malformed index info %s", buf.buf); } strbuf_release(&buf); strbuf_release(&uq); } static const char * const update_index_usage[] = { N_("git update-index [<options>] [--] [<file>...]"), NULL }; static struct object_id head_oid; static struct object_id merge_head_oid; static struct cache_entry *read_one_ent(const char *which, struct object_id *ent, const char *path, int namelen, int stage) { unsigned short mode; struct object_id oid; struct cache_entry *ce; if (get_tree_entry(the_repository, ent, path, &oid, &mode)) { if (which) error("%s: not in %s branch.", path, which); return NULL; } if (mode == S_IFDIR) { if (which) error("%s: not a blob in %s branch.", path, which); return NULL; } ce = make_empty_cache_entry(&the_index, namelen); oidcpy(&ce->oid, &oid); memcpy(ce->name, path, namelen); ce->ce_flags = create_ce_flags(stage); ce->ce_namelen = namelen; ce->ce_mode = create_ce_mode(mode); return ce; } static int unresolve_one(const char *path) { int namelen = strlen(path); int pos; int ret = 0; struct cache_entry *ce_2 = NULL, *ce_3 = NULL; /* See if there is such entry in the index. */ pos = cache_name_pos(path, namelen); if (0 <= pos) { /* already merged */ pos = unmerge_cache_entry_at(pos); if (pos < active_nr) { const struct cache_entry *ce = active_cache[pos]; if (ce_stage(ce) && ce_namelen(ce) == namelen && !memcmp(ce->name, path, namelen)) return 0; } /* no resolve-undo information; fall back */ } else { /* If there isn't, either it is unmerged, or * resolved as "removed" by mistake. We do not * want to do anything in the former case. */ pos = -pos-1; if (pos < active_nr) { const struct cache_entry *ce = active_cache[pos]; if (ce_namelen(ce) == namelen && !memcmp(ce->name, path, namelen)) { fprintf(stderr, "%s: skipping still unmerged path.\n", path); goto free_return; } } } /* Grab blobs from given path from HEAD and MERGE_HEAD, * stuff HEAD version in stage #2, * stuff MERGE_HEAD version in stage #3. */ ce_2 = read_one_ent("our", &head_oid, path, namelen, 2); ce_3 = read_one_ent("their", &merge_head_oid, path, namelen, 3); if (!ce_2 || !ce_3) { ret = -1; goto free_return; } if (oideq(&ce_2->oid, &ce_3->oid) && ce_2->ce_mode == ce_3->ce_mode) { fprintf(stderr, "%s: identical in both, skipping.\n", path); goto free_return; } remove_file_from_cache(path); if (add_cache_entry(ce_2, ADD_CACHE_OK_TO_ADD)) { error("%s: cannot add our version to the index.", path); ret = -1; goto free_return; } if (!add_cache_entry(ce_3, ADD_CACHE_OK_TO_ADD)) return 0; error("%s: cannot add their version to the index.", path); ret = -1; free_return: discard_cache_entry(ce_2); discard_cache_entry(ce_3); return ret; } static void read_head_pointers(void) { if (read_ref("HEAD", &head_oid)) die("No HEAD -- no initial commit yet?"); if (read_ref("MERGE_HEAD", &merge_head_oid)) { fprintf(stderr, "Not in the middle of a merge.\n"); exit(0); } } static int do_unresolve(int ac, const char **av, const char *prefix, int prefix_length) { int i; int err = 0; /* Read HEAD and MERGE_HEAD; if MERGE_HEAD does not exist, we * are not doing a merge, so exit with success status. */ read_head_pointers(); for (i = 1; i < ac; i++) { const char *arg = av[i]; char *p = prefix_path(prefix, prefix_length, arg); err |= unresolve_one(p); free(p); } return err; } static int do_reupdate(int ac, const char **av, const char *prefix) { /* Read HEAD and run update-index on paths that are * merged and already different between index and HEAD. */ int pos; int has_head = 1; struct pathspec pathspec; parse_pathspec(&pathspec, 0, PATHSPEC_PREFER_CWD, prefix, av + 1); if (read_ref("HEAD", &head_oid)) /* If there is no HEAD, that means it is an initial * commit. Update everything in the index. */ has_head = 0; redo: for (pos = 0; pos < active_nr; pos++) { const struct cache_entry *ce = active_cache[pos]; struct cache_entry *old = NULL; int save_nr; char *path; if (ce_stage(ce) || !ce_path_match(&the_index, ce, &pathspec, NULL)) continue; if (has_head) old = read_one_ent(NULL, &head_oid, ce->name, ce_namelen(ce), 0); if (old && ce->ce_mode == old->ce_mode && oideq(&ce->oid, &old->oid)) { discard_cache_entry(old); continue; /* unchanged */ } /* Be careful. The working tree may not have the * path anymore, in which case, under 'allow_remove', * or worse yet 'allow_replace', active_nr may decrease. */ save_nr = active_nr; path = xstrdup(ce->name); update_one(path); free(path); discard_cache_entry(old); if (save_nr != active_nr) goto redo; } clear_pathspec(&pathspec); return 0; } struct refresh_params { unsigned int flags; int *has_errors; }; static int refresh(struct refresh_params *o, unsigned int flag) { setup_work_tree(); read_cache(); *o->has_errors |= refresh_cache(o->flags | flag); return 0; } static int refresh_callback(const struct option *opt, const char *arg, int unset) { BUG_ON_OPT_NEG(unset); BUG_ON_OPT_ARG(arg); return refresh(opt->value, 0); } static int really_refresh_callback(const struct option *opt, const char *arg, int unset) { BUG_ON_OPT_NEG(unset); BUG_ON_OPT_ARG(arg); return refresh(opt->value, REFRESH_REALLY); } static int chmod_callback(const struct option *opt, const char *arg, int unset) { char *flip = opt->value; BUG_ON_OPT_NEG(unset); if ((arg[0] != '-' && arg[0] != '+') || arg[1] != 'x' || arg[2]) return error("option 'chmod' expects \"+x\" or \"-x\""); *flip = arg[0]; return 0; } static int resolve_undo_clear_callback(const struct option *opt, const char *arg, int unset) { BUG_ON_OPT_NEG(unset); BUG_ON_OPT_ARG(arg); resolve_undo_clear(); return 0; } static int parse_new_style_cacheinfo(const char *arg, unsigned int *mode, struct object_id *oid, const char **path) { unsigned long ul; char *endp; const char *p; if (!arg) return -1; errno = 0; ul = strtoul(arg, &endp, 8); if (errno || endp == arg || *endp != ',' || (unsigned int) ul != ul) return -1; /* not a new-style cacheinfo */ *mode = ul; endp++; if (parse_oid_hex(endp, oid, &p) || *p != ',') return -1; *path = p + 1; return 0; } static enum parse_opt_result cacheinfo_callback( struct parse_opt_ctx_t *ctx, const struct option *opt, const char *arg, int unset) { struct object_id oid; unsigned int mode; const char *path; BUG_ON_OPT_NEG(unset); BUG_ON_OPT_ARG(arg); if (!parse_new_style_cacheinfo(ctx->argv[1], &mode, &oid, &path)) { if (add_cacheinfo(mode, &oid, path, 0)) die("git update-index: --cacheinfo cannot add %s", path); ctx->argv++; ctx->argc--; return 0; } if (ctx->argc <= 3) return error("option 'cacheinfo' expects <mode>,<sha1>,<path>"); if (strtoul_ui(*++ctx->argv, 8, &mode) || get_oid_hex(*++ctx->argv, &oid) || add_cacheinfo(mode, &oid, *++ctx->argv, 0)) die("git update-index: --cacheinfo cannot add %s", *ctx->argv); ctx->argc -= 3; return 0; } static enum parse_opt_result stdin_cacheinfo_callback( struct parse_opt_ctx_t *ctx, const struct option *opt, const char *arg, int unset) { int *nul_term_line = opt->value; BUG_ON_OPT_NEG(unset); BUG_ON_OPT_ARG(arg); if (ctx->argc != 1) return error("option '%s' must be the last argument", opt->long_name); allow_add = allow_replace = allow_remove = 1; read_index_info(*nul_term_line); return 0; } static enum parse_opt_result stdin_callback( struct parse_opt_ctx_t *ctx, const struct option *opt, const char *arg, int unset) { int *read_from_stdin = opt->value; BUG_ON_OPT_NEG(unset); BUG_ON_OPT_ARG(arg); if (ctx->argc != 1) return error("option '%s' must be the last argument", opt->long_name); *read_from_stdin = 1; return 0; } static enum parse_opt_result unresolve_callback( struct parse_opt_ctx_t *ctx, const struct option *opt, const char *arg, int unset) { int *has_errors = opt->value; const char *prefix = startup_info->prefix; BUG_ON_OPT_NEG(unset); BUG_ON_OPT_ARG(arg); /* consume remaining arguments. */ *has_errors = do_unresolve(ctx->argc, ctx->argv, prefix, prefix ? strlen(prefix) : 0); if (*has_errors) active_cache_changed = 0; ctx->argv += ctx->argc - 1; ctx->argc = 1; return 0; } static enum parse_opt_result reupdate_callback( struct parse_opt_ctx_t *ctx, const struct option *opt, const char *arg, int unset) { int *has_errors = opt->value; const char *prefix = startup_info->prefix; BUG_ON_OPT_NEG(unset); BUG_ON_OPT_ARG(arg); /* consume remaining arguments. */ setup_work_tree(); *has_errors = do_reupdate(ctx->argc, ctx->argv, prefix); if (*has_errors) active_cache_changed = 0; ctx->argv += ctx->argc - 1; ctx->argc = 1; return 0; } int cmd_update_index(int argc, const char **argv, const char *prefix) { int newfd, entries, has_errors = 0, nul_term_line = 0; enum uc_mode untracked_cache = UC_UNSPECIFIED; int read_from_stdin = 0; int prefix_length = prefix ? strlen(prefix) : 0; int preferred_index_format = 0; char set_executable_bit = 0; struct refresh_params refresh_args = {0, &has_errors}; int lock_error = 0; int split_index = -1; int force_write = 0; int fsmonitor = -1; struct lock_file lock_file = LOCK_INIT; struct parse_opt_ctx_t ctx; strbuf_getline_fn getline_fn; int parseopt_state = PARSE_OPT_UNKNOWN; struct repository *r = the_repository; struct option options[] = { OPT_BIT('q', NULL, &refresh_args.flags, N_("continue refresh even when index needs update"), REFRESH_QUIET), OPT_BIT(0, "ignore-submodules", &refresh_args.flags, N_("refresh: ignore submodules"), REFRESH_IGNORE_SUBMODULES), OPT_SET_INT(0, "add", &allow_add, N_("do not ignore new files"), 1), OPT_SET_INT(0, "replace", &allow_replace, N_("let files replace directories and vice-versa"), 1), OPT_SET_INT(0, "remove", &allow_remove, N_("notice files missing from worktree"), 1), OPT_BIT(0, "unmerged", &refresh_args.flags, N_("refresh even if index contains unmerged entries"), REFRESH_UNMERGED), {OPTION_CALLBACK, 0, "refresh", &refresh_args, NULL, N_("refresh stat information"), PARSE_OPT_NOARG | PARSE_OPT_NONEG, refresh_callback}, {OPTION_CALLBACK, 0, "really-refresh", &refresh_args, NULL, N_("like --refresh, but ignore assume-unchanged setting"), PARSE_OPT_NOARG | PARSE_OPT_NONEG, really_refresh_callback}, {OPTION_LOWLEVEL_CALLBACK, 0, "cacheinfo", NULL, N_("<mode>,<object>,<path>"), N_("add the specified entry to the index"), PARSE_OPT_NOARG | /* disallow --cacheinfo=<mode> form */ PARSE_OPT_NONEG | PARSE_OPT_LITERAL_ARGHELP, NULL, 0, cacheinfo_callback}, {OPTION_CALLBACK, 0, "chmod", &set_executable_bit, "(+|-)x", N_("override the executable bit of the listed files"), PARSE_OPT_NONEG, chmod_callback}, {OPTION_SET_INT, 0, "assume-unchanged", &mark_valid_only, NULL, N_("mark files as \"not changing\""), PARSE_OPT_NOARG | PARSE_OPT_NONEG, NULL, MARK_FLAG}, {OPTION_SET_INT, 0, "no-assume-unchanged", &mark_valid_only, NULL, N_("clear assumed-unchanged bit"), PARSE_OPT_NOARG | PARSE_OPT_NONEG, NULL, UNMARK_FLAG}, {OPTION_SET_INT, 0, "skip-worktree", &mark_skip_worktree_only, NULL, N_("mark files as \"index-only\""), PARSE_OPT_NOARG | PARSE_OPT_NONEG, NULL, MARK_FLAG}, {OPTION_SET_INT, 0, "no-skip-worktree", &mark_skip_worktree_only, NULL, N_("clear skip-worktree bit"), PARSE_OPT_NOARG | PARSE_OPT_NONEG, NULL, UNMARK_FLAG}, OPT_BOOL(0, "ignore-skip-worktree-entries", &ignore_skip_worktree_entries, N_("do not touch index-only entries")), OPT_SET_INT(0, "info-only", &info_only, N_("add to index only; do not add content to object database"), 1), OPT_SET_INT(0, "force-remove", &force_remove, N_("remove named paths even if present in worktree"), 1), OPT_BOOL('z', NULL, &nul_term_line, N_("with --stdin: input lines are terminated by null bytes")), {OPTION_LOWLEVEL_CALLBACK, 0, "stdin", &read_from_stdin, NULL, N_("read list of paths to be updated from standard input"), PARSE_OPT_NONEG | PARSE_OPT_NOARG, NULL, 0, stdin_callback}, {OPTION_LOWLEVEL_CALLBACK, 0, "index-info", &nul_term_line, NULL, N_("add entries from standard input to the index"), PARSE_OPT_NONEG | PARSE_OPT_NOARG, NULL, 0, stdin_cacheinfo_callback}, {OPTION_LOWLEVEL_CALLBACK, 0, "unresolve", &has_errors, NULL, N_("repopulate stages #2 and #3 for the listed paths"), PARSE_OPT_NONEG | PARSE_OPT_NOARG, NULL, 0, unresolve_callback}, {OPTION_LOWLEVEL_CALLBACK, 'g', "again", &has_errors, NULL, N_("only update entries that differ from HEAD"), PARSE_OPT_NONEG | PARSE_OPT_NOARG, NULL, 0, reupdate_callback}, OPT_BIT(0, "ignore-missing", &refresh_args.flags, N_("ignore files missing from worktree"), REFRESH_IGNORE_MISSING), OPT_SET_INT(0, "verbose", &verbose, N_("report actions to standard output"), 1), {OPTION_CALLBACK, 0, "clear-resolve-undo", NULL, NULL, N_("(for porcelains) forget saved unresolved conflicts"), PARSE_OPT_NOARG | PARSE_OPT_NONEG, resolve_undo_clear_callback}, OPT_INTEGER(0, "index-version", &preferred_index_format, N_("write index in this format")), OPT_BOOL(0, "split-index", &split_index, N_("enable or disable split index")), OPT_BOOL(0, "untracked-cache", &untracked_cache, N_("enable/disable untracked cache")), OPT_SET_INT(0, "test-untracked-cache", &untracked_cache, N_("test if the filesystem supports untracked cache"), UC_TEST), OPT_SET_INT(0, "force-untracked-cache", &untracked_cache, N_("enable untracked cache without testing the filesystem"), UC_FORCE), OPT_SET_INT(0, "force-write-index", &force_write, N_("write out the index even if is not flagged as changed"), 1), OPT_BOOL(0, "fsmonitor", &fsmonitor, N_("enable or disable file system monitor")), {OPTION_SET_INT, 0, "fsmonitor-valid", &mark_fsmonitor_only, NULL, N_("mark files as fsmonitor valid"), PARSE_OPT_NOARG | PARSE_OPT_NONEG, NULL, MARK_FLAG}, {OPTION_SET_INT, 0, "no-fsmonitor-valid", &mark_fsmonitor_only, NULL, N_("clear fsmonitor valid bit"), PARSE_OPT_NOARG | PARSE_OPT_NONEG, NULL, UNMARK_FLAG}, OPT_END() }; if (argc == 2 && !strcmp(argv[1], "-h")) usage_with_options(update_index_usage, options); git_config(git_default_config, NULL); /* we will diagnose later if it turns out that we need to update it */ newfd = hold_locked_index(&lock_file, 0); if (newfd < 0) lock_error = errno; entries = read_cache(); if (entries < 0) die("cache corrupted"); the_index.updated_skipworktree = 1; /* * Custom copy of parse_options() because we want to handle * filename arguments as they come. */ parse_options_start(&ctx, argc, argv, prefix, options, PARSE_OPT_STOP_AT_NON_OPTION); while (ctx.argc) { if (parseopt_state != PARSE_OPT_DONE) parseopt_state = parse_options_step(&ctx, options, update_index_usage); if (!ctx.argc) break; switch (parseopt_state) { case PARSE_OPT_HELP: case PARSE_OPT_ERROR: exit(129); case PARSE_OPT_COMPLETE: exit(0); case PARSE_OPT_NON_OPTION: case PARSE_OPT_DONE: { const char *path = ctx.argv[0]; char *p; setup_work_tree(); p = prefix_path(prefix, prefix_length, path); update_one(p); if (set_executable_bit) chmod_path(set_executable_bit, p); free(p); ctx.argc--; ctx.argv++; break; } case PARSE_OPT_UNKNOWN: if (ctx.argv[0][1] == '-') error("unknown option '%s'", ctx.argv[0] + 2); else error("unknown switch '%c'", *ctx.opt); usage_with_options(update_index_usage, options); } } argc = parse_options_end(&ctx); getline_fn = nul_term_line ? strbuf_getline_nul : strbuf_getline_lf; if (preferred_index_format) { if (preferred_index_format < INDEX_FORMAT_LB || INDEX_FORMAT_UB < preferred_index_format) die("index-version %d not in range: %d..%d", preferred_index_format, INDEX_FORMAT_LB, INDEX_FORMAT_UB); if (the_index.version != preferred_index_format) active_cache_changed |= SOMETHING_CHANGED; the_index.version = preferred_index_format; } if (read_from_stdin) { struct strbuf buf = STRBUF_INIT; struct strbuf unquoted = STRBUF_INIT; setup_work_tree(); while (getline_fn(&buf, stdin) != EOF) { char *p; if (!nul_term_line && buf.buf[0] == '"') { strbuf_reset(&unquoted); if (unquote_c_style(&unquoted, buf.buf, NULL)) die("line is badly quoted"); strbuf_swap(&buf, &unquoted); } p = prefix_path(prefix, prefix_length, buf.buf); update_one(p); if (set_executable_bit) chmod_path(set_executable_bit, p); free(p); } strbuf_release(&unquoted); strbuf_release(&buf); } if (split_index > 0) { if (git_config_get_split_index() == 0) warning(_("core.splitIndex is set to false; " "remove or change it, if you really want to " "enable split index")); if (the_index.split_index) the_index.cache_changed |= SPLIT_INDEX_ORDERED; else add_split_index(&the_index); } else if (!split_index) { if (git_config_get_split_index() == 1) warning(_("core.splitIndex is set to true; " "remove or change it, if you really want to " "disable split index")); remove_split_index(&the_index); } prepare_repo_settings(r); switch (untracked_cache) { case UC_UNSPECIFIED: break; case UC_DISABLE: if (r->settings.core_untracked_cache == UNTRACKED_CACHE_WRITE) warning(_("core.untrackedCache is set to true; " "remove or change it, if you really want to " "disable the untracked cache")); remove_untracked_cache(&the_index); report(_("Untracked cache disabled")); break; case UC_TEST: setup_work_tree(); return !test_if_untracked_cache_is_supported(); case UC_ENABLE: case UC_FORCE: if (r->settings.core_untracked_cache == UNTRACKED_CACHE_REMOVE) warning(_("core.untrackedCache is set to false; " "remove or change it, if you really want to " "enable the untracked cache")); add_untracked_cache(&the_index); report(_("Untracked cache enabled for '%s'"), get_git_work_tree()); break; default: BUG("bad untracked_cache value: %d", untracked_cache); } if (fsmonitor > 0) { if (git_config_get_fsmonitor() == 0) warning(_("core.fsmonitor is unset; " "set it if you really want to " "enable fsmonitor")); add_fsmonitor(&the_index); report(_("fsmonitor enabled")); } else if (!fsmonitor) { if (git_config_get_fsmonitor() == 1) warning(_("core.fsmonitor is set; " "remove it if you really want to " "disable fsmonitor")); remove_fsmonitor(&the_index); report(_("fsmonitor disabled")); } if (active_cache_changed || force_write) { if (newfd < 0) { if (refresh_args.flags & REFRESH_QUIET) exit(128); unable_to_lock_die(get_index_file(), lock_error); } if (write_locked_index(&the_index, &lock_file, COMMIT_LOCK)) die("Unable to write new index file"); } rollback_lock_file(&lock_file); return has_errors ? 1 : 0; }