Example #1
0
static int get_stat_data(struct cache_entry *ce,
			 const unsigned char **sha1p,
			 unsigned int *modep,
			 int cached, int match_missing)
{
	const unsigned char *sha1 = ce->sha1;
	unsigned int mode = ce->ce_mode;

	if (!cached && !ce_uptodate(ce)) {
		int changed;
		struct stat st;
		changed = check_removed(ce, &st);
		if (changed < 0)
			return -1;
		else if (changed) {
			if (match_missing) {
				*sha1p = sha1;
				*modep = mode;
				return 0;
			}
			return -1;
		}
		changed = ce_match_stat(ce, &st, 0);
		if (changed) {
			mode = ce_mode_from_stat(ce, st.st_mode);
			sha1 = null_sha1;
		}
	}

	*sha1p = sha1;
	*modep = mode;
	return 0;
}
Example #2
0
static int add_one_path(const struct cache_entry *old, const char *path, int len, struct stat *st)
{
	int option, size;
	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;

	size = cache_entry_size(len);
	ce = xcalloc(1, size);
	memcpy(ce->name, path, len);
	ce->ce_flags = create_ce_flags(0);
	ce->ce_namelen = len;
	fill_stat_cache_info(ce, st);
	ce->ce_mode = ce_mode_from_stat(old, st->st_mode);

	if (index_path(ce->sha1, path, st,
		       info_only ? 0 : HASH_WRITE_OBJECT)) {
		free(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))
		return error("%s: cannot add to the index - missing --add option?", path);
	return 0;
}
Example #3
0
void gitmodules_config(void)
{
	const char *work_tree = get_git_work_tree();
	if (work_tree) {
		struct strbuf gitmodules_path = STRBUF_INIT;
		int pos;
		strbuf_addstr(&gitmodules_path, work_tree);
		strbuf_addstr(&gitmodules_path, "/.gitmodules");
		if (read_cache() < 0)
			die("index file corrupt");
		pos = cache_name_pos(".gitmodules", 11);
		if (pos < 0) { /* .gitmodules not found or isn't merged */
			pos = -1 - pos;
			if (active_nr > pos) {  /* there is a .gitmodules */
				const struct cache_entry *ce = active_cache[pos];
				if (ce_namelen(ce) == 11 &&
				    !memcmp(ce->name, ".gitmodules", 11))
					gitmodules_is_unmerged = 1;
			}
		} else if (pos < active_nr) {
			struct stat st;
			if (lstat(".gitmodules", &st) == 0 &&
			    ce_match_stat(active_cache[pos], &st, 0) & DATA_CHANGED)
				gitmodules_is_modified = 1;
		}

		if (!gitmodules_is_unmerged)
			git_config_from_file(submodule_config, gitmodules_path.buf, NULL);
		strbuf_release(&gitmodules_path);
	}
}
Example #4
0
static int get_stat_data(struct cache_entry *ce,
			 unsigned char ** sha1p, unsigned int *modep)
{
	unsigned char *sha1 = ce->sha1;
	unsigned int mode = ce->ce_mode;

	if (!cached_only) {
		static unsigned char no_sha1[20];
		int changed;
		struct stat st;
		if (lstat(ce->name, &st) < 0) {
			if (errno == ENOENT && match_nonexisting) {
				*sha1p = sha1;
				*modep = mode;
				return 0;
			}
			return -1;
		}
		changed = ce_match_stat(ce, &st);
		if (changed) {
			mode = create_ce_mode(st.st_mode);
			if (!trust_executable_bit &&
			    S_ISREG(mode) && S_ISREG(ce->ce_mode) &&
			    ((mode ^ ce->ce_mode) == 0111))
				mode = ce->ce_mode;
			sha1 = no_sha1;
		}
	}

	*sha1p = sha1;
	*modep = mode;
	return 0;
}
Example #5
0
/*
 * Has a file changed or has a submodule new commits or a dirty work tree?
 *
 * Return 1 when changes are detected, 0 otherwise. If the DIRTY_SUBMODULES
 * option is set, the caller does not only want to know if a submodule is
 * modified at all but wants to know all the conditions that are met (new
 * commits, untracked content and/or modified content).
 */
static int match_stat_with_submodule(struct diff_options *diffopt,
				      struct cache_entry *ce, struct stat *st,
				      unsigned ce_option, unsigned *dirty_submodule)
{
	int changed = ce_match_stat(ce, st, ce_option);
	if (S_ISGITLINK(ce->ce_mode)
	    && !DIFF_OPT_TST(diffopt, IGNORE_SUBMODULES)
	    && (!changed || DIFF_OPT_TST(diffopt, DIRTY_SUBMODULES))) {
		*dirty_submodule = is_submodule_modified(ce->name, DIFF_OPT_TST(diffopt, IGNORE_UNTRACKED_IN_SUBMODULES));
	}
	return changed;
}
Example #6
0
/*
 * Has a file changed or has a submodule new commits or a dirty work tree?
 *
 * Return 1 when changes are detected, 0 otherwise. If the DIRTY_SUBMODULES
 * option is set, the caller does not only want to know if a submodule is
 * modified at all but wants to know all the conditions that are met (new
 * commits, untracked content and/or modified content).
 */
static int match_stat_with_submodule(struct diff_options *diffopt,
                                     struct cache_entry *ce, struct stat *st,
                                     unsigned ce_option, unsigned *dirty_submodule)
{
    int changed = ce_match_stat(ce, st, ce_option);
    if (S_ISGITLINK(ce->ce_mode)) {
        unsigned orig_flags = diffopt->flags;
        if (!DIFF_OPT_TST(diffopt, OVERRIDE_SUBMODULE_CONFIG))
            set_diffopt_flags_from_submodule_config(diffopt, ce->name);
        if (DIFF_OPT_TST(diffopt, IGNORE_SUBMODULES))
            changed = 0;
        else if (!DIFF_OPT_TST(diffopt, IGNORE_DIRTY_SUBMODULES)
                 && (!changed || DIFF_OPT_TST(diffopt, DIRTY_SUBMODULES)))
            *dirty_submodule = is_submodule_modified(ce->name, DIFF_OPT_TST(diffopt, IGNORE_UNTRACKED_IN_SUBMODULES));
        diffopt->flags = orig_flags;
    }
    return changed;
}
Example #7
0
static int get_stat_data(struct cache_entry *ce,
                         const unsigned char **sha1p,
                         unsigned int *modep,
                         int cached, int match_missing,
                         unsigned *dirty_submodule, struct diff_options *diffopt)
{
    const unsigned char *sha1 = ce->sha1;
    unsigned int mode = ce->ce_mode;

    if (!cached && !ce_uptodate(ce)) {
        int changed;
        struct stat st;
        changed = check_removed(ce, &st);
        if (changed < 0)
            return -1;
        else if (changed) {
            if (match_missing) {
                *sha1p = sha1;
                *modep = mode;
                return 0;
            }
            return -1;
        }
        changed = ce_match_stat(ce, &st, 0);
        if (S_ISGITLINK(ce->ce_mode)
                && !DIFF_OPT_TST(diffopt, IGNORE_SUBMODULES)
                && (!changed || (diffopt->output_format & DIFF_FORMAT_PATCH))
                && is_submodule_modified(ce->name)) {
            changed = 1;
            *dirty_submodule = 1;
        }
        if (changed) {
            mode = ce_mode_from_stat(ce, st.st_mode);
            sha1 = null_sha1;
        }
    }

    *sha1p = sha1;
    *modep = mode;
    return 0;
}
Example #8
0
/*
 * Given a name and sha1 pair, if the dircache tells us the file in
 * the work tree has that object contents, return true, so that
 * prepare_temp_file() does not have to inflate and extract.
 */
static int work_tree_matches(const char *name, const unsigned char *sha1)
{
	struct cache_entry *ce;
	struct stat st;
	int pos, len;

	/* We do not read the cache ourselves here, because the
	 * benchmark with my previous version that always reads cache
	 * shows that it makes things worse for diff-tree comparing
	 * two linux-2.6 kernel trees in an already checked out work
	 * tree.  This is because most diff-tree comparisons deal with
	 * only a small number of files, while reading the cache is
	 * expensive for a large project, and its cost outweighs the
	 * savings we get by not inflating the object to a temporary
	 * file.  Practically, this code only helps when we are used
	 * by diff-cache --cached, which does read the cache before
	 * calling us.
	 */
	if (!active_cache)
		return 0;

	len = strlen(name);
	pos = cache_name_pos(name, len);
	if (pos < 0)
		return 0;
	ce = active_cache[pos];
	if ((lstat(name, &st) < 0) ||
	    !S_ISREG(st.st_mode) || /* careful! */
	    ce_match_stat(ce, &st) ||
	    memcmp(sha1, ce->sha1, 20))
		return 0;
	/* we return 1 only when we can stat, it is a regular file,
	 * stat information matches, and sha1 recorded in the cache
	 * matches.  I.e. we know the file in the work tree really is
	 * the same as the <name, sha1> pair.
	 */
	return 1;
}
Example #9
0
int run_diff_files(struct rev_info *revs, unsigned int option)
{
	int entries, i;
	int diff_unmerged_stage = revs->max_count;
	int silent_on_removed = option & DIFF_SILENT_ON_REMOVED;
	unsigned ce_option = ((option & DIFF_RACY_IS_MODIFIED)
			      ? CE_MATCH_RACY_IS_DIRTY : 0);

	diff_set_mnemonic_prefix(&revs->diffopt, "i/", "w/");

	if (diff_unmerged_stage < 0)
		diff_unmerged_stage = 2;
	entries = active_nr;
	for (i = 0; i < entries; i++) {
		struct stat st;
		unsigned int oldmode, newmode;
		struct cache_entry *ce = active_cache[i];
		int changed;

		if (DIFF_OPT_TST(&revs->diffopt, QUIET) &&
			DIFF_OPT_TST(&revs->diffopt, HAS_CHANGES))
			break;

		if (!ce_path_match(ce, revs->prune_data))
			continue;

		if (ce_stage(ce)) {
			struct combine_diff_path *dpath;
			int num_compare_stages = 0;
			size_t path_len;

			path_len = ce_namelen(ce);

			dpath = xmalloc(combine_diff_path_size(5, path_len));
			dpath->path = (char *) &(dpath->parent[5]);

			dpath->next = NULL;
			dpath->len = path_len;
			memcpy(dpath->path, ce->name, path_len);
			dpath->path[path_len] = '\0';
			hashclr(dpath->sha1);
			memset(&(dpath->parent[0]), 0,
			       sizeof(struct combine_diff_parent)*5);

			changed = check_removed(ce, &st);
			if (!changed)
				dpath->mode = ce_mode_from_stat(ce, st.st_mode);
			else {
				if (changed < 0) {
					perror(ce->name);
					continue;
				}
				if (silent_on_removed)
					continue;
			}

			while (i < entries) {
				struct cache_entry *nce = active_cache[i];
				int stage;

				if (strcmp(ce->name, nce->name))
					break;

				/* Stage #2 (ours) is the first parent,
				 * stage #3 (theirs) is the second.
				 */
				stage = ce_stage(nce);
				if (2 <= stage) {
					int mode = nce->ce_mode;
					num_compare_stages++;
					hashcpy(dpath->parent[stage-2].sha1, nce->sha1);
					dpath->parent[stage-2].mode = ce_mode_from_stat(nce, mode);
					dpath->parent[stage-2].status =
						DIFF_STATUS_MODIFIED;
				}

				/* diff against the proper unmerged stage */
				if (stage == diff_unmerged_stage)
					ce = nce;
				i++;
			}
			/*
			 * Compensate for loop update
			 */
			i--;

			if (revs->combine_merges && num_compare_stages == 2) {
				show_combined_diff(dpath, 2,
						   revs->dense_combined_merges,
						   revs);
				free(dpath);
				continue;
			}
			free(dpath);
			dpath = NULL;

			/*
			 * Show the diff for the 'ce' if we found the one
			 * from the desired stage.
			 */
			diff_unmerge(&revs->diffopt, ce->name, 0, null_sha1);
			if (ce_stage(ce) != diff_unmerged_stage)
				continue;
		}

		if (ce_uptodate(ce))
			continue;

		changed = check_removed(ce, &st);
		if (changed) {
			if (changed < 0) {
				perror(ce->name);
				continue;
			}
			if (silent_on_removed)
				continue;
			diff_addremove(&revs->diffopt, '-', ce->ce_mode,
				       ce->sha1, ce->name);
			continue;
		}
		changed = ce_match_stat(ce, &st, ce_option);
		if (!changed) {
			ce_mark_uptodate(ce);
			if (!DIFF_OPT_TST(&revs->diffopt, FIND_COPIES_HARDER))
				continue;
		}
		oldmode = ce->ce_mode;
		newmode = ce_mode_from_stat(ce, st.st_mode);
		diff_change(&revs->diffopt, oldmode, newmode,
			    ce->sha1, (changed ? null_sha1 : ce->sha1),
			    ce->name);

	}
	diffcore_std(&revs->diffopt);
	diff_flush(&revs->diffopt);
	return 0;
}
Example #10
0
File: rm.c Project: 00027jang27/git
static int check_local_mod(unsigned char *head, int index_only)
{
	/*
	 * Items in list are already sorted in the cache order,
	 * so we could do this a lot more efficiently by using
	 * tree_desc based traversal if we wanted to, but I am
	 * lazy, and who cares if removal of files is a tad
	 * slower than the theoretical maximum speed?
	 */
	int i, no_head;
	int errs = 0;

	no_head = is_null_sha1(head);
	for (i = 0; i < list.nr; i++) {
		struct stat st;
		int pos;
		struct cache_entry *ce;
		const char *name = list.entry[i].name;
		unsigned char sha1[20];
		unsigned mode;
		int local_changes = 0;
		int staged_changes = 0;

		pos = cache_name_pos(name, strlen(name));
		if (pos < 0) {
			/*
			 * Skip unmerged entries except for populated submodules
			 * that could lose history when removed.
			 */
			pos = get_ours_cache_pos(name, pos);
			if (pos < 0)
				continue;

			if (!S_ISGITLINK(active_cache[pos]->ce_mode) ||
			    is_empty_dir(name))
				continue;
		}
		ce = active_cache[pos];

		if (lstat(ce->name, &st) < 0) {
			if (errno != ENOENT && errno != ENOTDIR)
				warning("'%s': %s", ce->name, strerror(errno));
			/* It already vanished from the working tree */
			continue;
		}
		else if (S_ISDIR(st.st_mode)) {
			/* if a file was removed and it is now a
			 * directory, that is the same as ENOENT as
			 * far as git is concerned; we do not track
			 * directories unless they are submodules.
			 */
			if (!S_ISGITLINK(ce->ce_mode))
				continue;
		}

		/*
		 * "rm" of a path that has changes need to be treated
		 * carefully not to allow losing local changes
		 * accidentally.  A local change could be (1) file in
		 * work tree is different since the index; and/or (2)
		 * the user staged a content that is different from
		 * the current commit in the index.
		 *
		 * In such a case, you would need to --force the
		 * removal.  However, "rm --cached" (remove only from
		 * the index) is safe if the index matches the file in
		 * the work tree or the HEAD commit, as it means that
		 * the content being removed is available elsewhere.
		 */

		/*
		 * Is the index different from the file in the work tree?
		 * If it's a submodule, is its work tree modified?
		 */
		if (ce_match_stat(ce, &st, 0) ||
		    (S_ISGITLINK(ce->ce_mode) &&
		     !ok_to_remove_submodule(ce->name)))
			local_changes = 1;

		/*
		 * Is the index different from the HEAD commit?  By
		 * definition, before the very initial commit,
		 * anything staged in the index is treated by the same
		 * way as changed from the HEAD.
		 */
		if (no_head
		     || get_tree_entry(head, name, sha1, &mode)
		     || ce->ce_mode != create_ce_mode(mode)
		     || hashcmp(ce->sha1, sha1))
			staged_changes = 1;

		/*
		 * If the index does not match the file in the work
		 * tree and if it does not match the HEAD commit
		 * either, (1) "git rm" without --cached definitely
		 * will lose information; (2) "git rm --cached" will
		 * lose information unless it is about removing an
		 * "intent to add" entry.
		 */
		if (local_changes && staged_changes) {
			if (!index_only || !(ce->ce_flags & CE_INTENT_TO_ADD))
				errs = error(_("'%s' has staged content different "
					     "from both the file and the HEAD\n"
					     "(use -f to force removal)"), name);
		}
		else if (!index_only) {
			if (staged_changes)
				errs = error(_("'%s' has changes staged in the index\n"
					     "(use --cached to keep the file, "
					     "or -f to force removal)"), name);
			if (local_changes) {
				if (S_ISGITLINK(ce->ce_mode) &&
				    !submodule_uses_gitfile(name)) {
					errs = error(_("submodule '%s' (or one of its nested "
						     "submodules) uses a .git directory\n"
						     "(use 'rm -rf' if you really want to remove "
						     "it including all of its history)"), name);
				} else
					errs = error(_("'%s' has local modifications\n"
						     "(use --cached to keep the file, "
						     "or -f to force removal)"), name);
			}
		}
	}
	return errs;
}
Example #11
0
static int check_local_mod(struct object_id *head, int index_only)
{
	/*
	 * Items in list are already sorted in the cache order,
	 * so we could do this a lot more efficiently by using
	 * tree_desc based traversal if we wanted to, but I am
	 * lazy, and who cares if removal of files is a tad
	 * slower than the theoretical maximum speed?
	 */
	int i, no_head;
	int errs = 0;
	struct string_list files_staged = STRING_LIST_INIT_NODUP;
	struct string_list files_cached = STRING_LIST_INIT_NODUP;
	struct string_list files_local = STRING_LIST_INIT_NODUP;

	no_head = is_null_oid(head);
	for (i = 0; i < list.nr; i++) {
		struct stat st;
		int pos;
		const struct cache_entry *ce;
		const char *name = list.entry[i].name;
		struct object_id oid;
		unsigned mode;
		int local_changes = 0;
		int staged_changes = 0;

		pos = cache_name_pos(name, strlen(name));
		if (pos < 0) {
			/*
			 * Skip unmerged entries except for populated submodules
			 * that could lose history when removed.
			 */
			pos = get_ours_cache_pos(name, pos);
			if (pos < 0)
				continue;

			if (!S_ISGITLINK(active_cache[pos]->ce_mode) ||
			    is_empty_dir(name))
				continue;
		}
		ce = active_cache[pos];

		if (lstat(ce->name, &st) < 0) {
			if (!is_missing_file_error(errno))
				warning_errno(_("failed to stat '%s'"), ce->name);
			/* It already vanished from the working tree */
			continue;
		}
		else if (S_ISDIR(st.st_mode)) {
			/* if a file was removed and it is now a
			 * directory, that is the same as ENOENT as
			 * far as git is concerned; we do not track
			 * directories unless they are submodules.
			 */
			if (!S_ISGITLINK(ce->ce_mode))
				continue;
		}

		/*
		 * "rm" of a path that has changes need to be treated
		 * carefully not to allow losing local changes
		 * accidentally.  A local change could be (1) file in
		 * work tree is different since the index; and/or (2)
		 * the user staged a content that is different from
		 * the current commit in the index.
		 *
		 * In such a case, you would need to --force the
		 * removal.  However, "rm --cached" (remove only from
		 * the index) is safe if the index matches the file in
		 * the work tree or the HEAD commit, as it means that
		 * the content being removed is available elsewhere.
		 */

		/*
		 * Is the index different from the file in the work tree?
		 * If it's a submodule, is its work tree modified?
		 */
		if (ce_match_stat(ce, &st, 0) ||
		    (S_ISGITLINK(ce->ce_mode) &&
		     bad_to_remove_submodule(ce->name,
				SUBMODULE_REMOVAL_DIE_ON_ERROR |
				SUBMODULE_REMOVAL_IGNORE_IGNORED_UNTRACKED)))
			local_changes = 1;

		/*
		 * Is the index different from the HEAD commit?  By
		 * definition, before the very initial commit,
		 * anything staged in the index is treated by the same
		 * way as changed from the HEAD.
		 */
		if (no_head
		     || get_tree_entry(head->hash, name, oid.hash, &mode)
		     || ce->ce_mode != create_ce_mode(mode)
		     || oidcmp(&ce->oid, &oid))
			staged_changes = 1;

		/*
		 * If the index does not match the file in the work
		 * tree and if it does not match the HEAD commit
		 * either, (1) "git rm" without --cached definitely
		 * will lose information; (2) "git rm --cached" will
		 * lose information unless it is about removing an
		 * "intent to add" entry.
		 */
		if (local_changes && staged_changes) {
			if (!index_only || !ce_intent_to_add(ce))
				string_list_append(&files_staged, name);
		}
		else if (!index_only) {
			if (staged_changes)
				string_list_append(&files_cached, name);
			if (local_changes)
				string_list_append(&files_local, name);
		}
	}
	print_error_files(&files_staged,
			  Q_("the following file has staged content different "
			     "from both the\nfile and the HEAD:",
			     "the following files have staged content different"
			     " from both the\nfile and the HEAD:",
			     files_staged.nr),
			  _("\n(use -f to force removal)"),
			  &errs);
	string_list_clear(&files_staged, 0);
	print_error_files(&files_cached,
			  Q_("the following file has changes "
			     "staged in the index:",
			     "the following files have changes "
			     "staged in the index:", files_cached.nr),
			  _("\n(use --cached to keep the file,"
			    " or -f to force removal)"),
			  &errs);
	string_list_clear(&files_cached, 0);

	print_error_files(&files_local,
			  Q_("the following file has local modifications:",
			     "the following files have local modifications:",
			     files_local.nr),
			  _("\n(use --cached to keep the file,"
			    " or -f to force removal)"),
			  &errs);
	string_list_clear(&files_local, 0);

	return errs;
}