Exemplo n.º 1
0
static char *prepare_index(int argc, const char **argv, const char *prefix,
			   const struct commit *current_head, int is_status)
{
	int fd;
	struct string_list partial;
	struct pathspec pathspec;
	int refresh_flags = REFRESH_QUIET;

	if (is_status)
		refresh_flags |= REFRESH_UNMERGED;
	parse_pathspec(&pathspec, 0,
		       PATHSPEC_PREFER_FULL,
		       prefix, argv);

	if (read_cache_preload(&pathspec) < 0)
		die(_("index file corrupt"));

	if (interactive) {
		char *old_index_env = NULL;
		fd = hold_locked_index(&index_lock, 1);

		refresh_cache_or_die(refresh_flags);

		if (write_cache(fd, active_cache, active_nr) ||
		    close_lock_file(&index_lock))
			die(_("unable to create temporary index"));

		old_index_env = getenv(INDEX_ENVIRONMENT);
		setenv(INDEX_ENVIRONMENT, index_lock.filename, 1);

		if (interactive_add(argc, argv, prefix, patch_interactive) != 0)
			die(_("interactive add failed"));

		if (old_index_env && *old_index_env)
			setenv(INDEX_ENVIRONMENT, old_index_env, 1);
		else
			unsetenv(INDEX_ENVIRONMENT);

		discard_cache();
		read_cache_from(index_lock.filename);

		commit_style = COMMIT_NORMAL;
		return index_lock.filename;
	}

	/*
	 * Non partial, non as-is commit.
	 *
	 * (1) get the real index;
	 * (2) update the_index as necessary;
	 * (3) write the_index out to the real index (still locked);
	 * (4) return the name of the locked index file.
	 *
	 * The caller should run hooks on the locked real index, and
	 * (A) if all goes well, commit the real index;
	 * (B) on failure, rollback the real index.
	 */
	if (all || (also && pathspec.nr)) {
		fd = hold_locked_index(&index_lock, 1);
		add_files_to_cache(also ? prefix : NULL, &pathspec, 0);
		refresh_cache_or_die(refresh_flags);
		update_main_cache_tree(WRITE_TREE_SILENT);
		if (write_cache(fd, active_cache, active_nr) ||
		    close_lock_file(&index_lock))
			die(_("unable to write new_index file"));
		commit_style = COMMIT_NORMAL;
		return index_lock.filename;
	}

	/*
	 * As-is commit.
	 *
	 * (1) return the name of the real index file.
	 *
	 * The caller should run hooks on the real index,
	 * and create commit from the_index.
	 * We still need to refresh the index here.
	 */
	if (!only && !pathspec.nr) {
		fd = hold_locked_index(&index_lock, 1);
		refresh_cache_or_die(refresh_flags);
		if (active_cache_changed) {
			update_main_cache_tree(WRITE_TREE_SILENT);
			if (write_cache(fd, active_cache, active_nr) ||
			    commit_locked_index(&index_lock))
				die(_("unable to write new_index file"));
		} else {
			rollback_lock_file(&index_lock);
		}
		commit_style = COMMIT_AS_IS;
		return get_index_file();
	}

	/*
	 * A partial commit.
	 *
	 * (0) find the set of affected paths;
	 * (1) get lock on the real index file;
	 * (2) update the_index with the given paths;
	 * (3) write the_index out to the real index (still locked);
	 * (4) get lock on the false index file;
	 * (5) reset the_index from HEAD;
	 * (6) update the_index the same way as (2);
	 * (7) write the_index out to the false index file;
	 * (8) return the name of the false index file (still locked);
	 *
	 * The caller should run hooks on the locked false index, and
	 * create commit from it.  Then
	 * (A) if all goes well, commit the real index;
	 * (B) on failure, rollback the real index;
	 * In either case, rollback the false index.
	 */
	commit_style = COMMIT_PARTIAL;

	if (whence != FROM_COMMIT) {
		if (whence == FROM_MERGE)
			die(_("cannot do a partial commit during a merge."));
		else if (whence == FROM_CHERRY_PICK)
			die(_("cannot do a partial commit during a cherry-pick."));
	}

	memset(&partial, 0, sizeof(partial));
	partial.strdup_strings = 1;
	if (list_paths(&partial, !current_head ? NULL : "HEAD", prefix, &pathspec))
		exit(1);

	discard_cache();
	if (read_cache() < 0)
		die(_("cannot read the index"));

	fd = hold_locked_index(&index_lock, 1);
	add_remove_files(&partial);
	refresh_cache(REFRESH_QUIET);
	if (write_cache(fd, active_cache, active_nr) ||
	    close_lock_file(&index_lock))
		die(_("unable to write new_index file"));

	fd = hold_lock_file_for_update(&false_lock,
				       git_path("next-index-%"PRIuMAX,
						(uintmax_t) getpid()),
				       LOCK_DIE_ON_ERROR);

	create_base_index(current_head);
	add_remove_files(&partial);
	refresh_cache(REFRESH_QUIET);

	if (write_cache(fd, active_cache, active_nr) ||
	    close_lock_file(&false_lock))
		die(_("unable to write temporary index file"));

	discard_cache();
	read_cache_from(false_lock.filename);

	return false_lock.filename;
}
Exemplo n.º 2
0
Arquivo: add.c Projeto: Noffica/git
int cmd_add(int argc, const char **argv, const char *prefix)
{
	int exit_status = 0;
	struct pathspec pathspec;
	struct dir_struct dir;
	int flags;
	int add_new_files;
	int require_pathspec;
	char *seen = NULL;
	struct lock_file lock_file = LOCK_INIT;

	git_config(add_config, NULL);

	argc = parse_options(argc, argv, prefix, builtin_add_options,
			  builtin_add_usage, PARSE_OPT_KEEP_ARGV0);
	if (patch_interactive)
		add_interactive = 1;
	if (add_interactive)
		exit(interactive_add(argc - 1, argv + 1, prefix, patch_interactive));

	if (edit_interactive)
		return(edit_patch(argc, argv, prefix));
	argc--;
	argv++;

	if (0 <= addremove_explicit)
		addremove = addremove_explicit;
	else if (take_worktree_changes && ADDREMOVE_DEFAULT)
		addremove = 0; /* "-u" was given but not "-A" */

	if (addremove && take_worktree_changes)
		die(_("-A and -u are mutually incompatible"));

	if (!take_worktree_changes && addremove_explicit < 0 && argc)
		/* Turn "git add pathspec..." to "git add -A pathspec..." */
		addremove = 1;

	if (!show_only && ignore_missing)
		die(_("Option --ignore-missing can only be used together with --dry-run"));

	if (chmod_arg && ((chmod_arg[0] != '-' && chmod_arg[0] != '+') ||
			  chmod_arg[1] != 'x' || chmod_arg[2]))
		die(_("--chmod param '%s' must be either -x or +x"), chmod_arg);

	add_new_files = !take_worktree_changes && !refresh_only && !add_renormalize;
	require_pathspec = !(take_worktree_changes || (0 < addremove_explicit));

	hold_locked_index(&lock_file, LOCK_DIE_ON_ERROR);

	flags = ((verbose ? ADD_CACHE_VERBOSE : 0) |
		 (show_only ? ADD_CACHE_PRETEND : 0) |
		 (intent_to_add ? ADD_CACHE_INTENT : 0) |
		 (ignore_add_errors ? ADD_CACHE_IGNORE_ERRORS : 0) |
		 (!(addremove || take_worktree_changes)
		  ? ADD_CACHE_IGNORE_REMOVAL : 0));

	if (require_pathspec && argc == 0) {
		fprintf(stderr, _("Nothing specified, nothing added.\n"));
		fprintf(stderr, _("Maybe you wanted to say 'git add .'?\n"));
		return 0;
	}

	/*
	 * Check the "pathspec '%s' did not match any files" block
	 * below before enabling new magic.
	 */
	parse_pathspec(&pathspec, PATHSPEC_ATTR,
		       PATHSPEC_PREFER_FULL |
		       PATHSPEC_SYMLINK_LEADING_PATH,
		       prefix, argv);

	if (read_cache_preload(&pathspec) < 0)
		die(_("index file corrupt"));

	die_in_unpopulated_submodule(&the_index, prefix);
	die_path_inside_submodule(&the_index, &pathspec);

	if (add_new_files) {
		int baselen;

		/* Set up the default git porcelain excludes */
		memset(&dir, 0, sizeof(dir));
		if (!ignored_too) {
			dir.flags |= DIR_COLLECT_IGNORED;
			setup_standard_excludes(&dir);
		}

		/* This picks up the paths that are not tracked */
		baselen = fill_directory(&dir, &the_index, &pathspec);
		if (pathspec.nr)
			seen = prune_directory(&dir, &pathspec, baselen);
	}

	if (refresh_only) {
		refresh(verbose, &pathspec);
		goto finish;
	}

	if (pathspec.nr) {
		int i;

		if (!seen)
			seen = find_pathspecs_matching_against_index(&pathspec, &the_index);

		/*
		 * file_exists() assumes exact match
		 */
		GUARD_PATHSPEC(&pathspec,
			       PATHSPEC_FROMTOP |
			       PATHSPEC_LITERAL |
			       PATHSPEC_GLOB |
			       PATHSPEC_ICASE |
			       PATHSPEC_EXCLUDE);

		for (i = 0; i < pathspec.nr; i++) {
			const char *path = pathspec.items[i].match;
			if (pathspec.items[i].magic & PATHSPEC_EXCLUDE)
				continue;
			if (!seen[i] && path[0] &&
			    ((pathspec.items[i].magic &
			      (PATHSPEC_GLOB | PATHSPEC_ICASE)) ||
			     !file_exists(path))) {
				if (ignore_missing) {
					int dtype = DT_UNKNOWN;
					if (is_excluded(&dir, &the_index, path, &dtype))
						dir_add_ignored(&dir, &the_index,
								path, pathspec.items[i].len);
				} else
					die(_("pathspec '%s' did not match any files"),
					    pathspec.items[i].original);
			}
		}
		free(seen);
	}

	plug_bulk_checkin();

	if (add_renormalize)
		exit_status |= renormalize_tracked_files(&pathspec, flags);
	else
		exit_status |= add_files_to_cache(prefix, &pathspec, flags);

	if (add_new_files)
		exit_status |= add_files(&dir, flags);

	if (chmod_arg && pathspec.nr)
		chmod_pathspec(&pathspec, chmod_arg[0]);
	unplug_bulk_checkin();

finish:
	if (write_locked_index(&the_index, &lock_file,
			       COMMIT_LOCK | SKIP_IF_UNCHANGED))
		die(_("Unable to write new index file"));

	UNLEAK(pathspec);
	UNLEAK(dir);
	return exit_status;
}
Exemplo n.º 3
0
int cmd_add(int argc, const char **argv, const char *prefix)
{
	int exit_status = 0;
	int newfd;
	const char **pathspec;
	struct dir_struct dir;
	int flags;
	int add_new_files;
	int require_pathspec;
	char *seen = NULL;

	git_config(add_config, NULL);

	argc = parse_options(argc, argv, prefix, builtin_add_options,
			  builtin_add_usage, PARSE_OPT_KEEP_ARGV0);
	if (patch_interactive)
		add_interactive = 1;
	if (add_interactive)
		exit(interactive_add(argc - 1, argv + 1, prefix));

	if (edit_interactive)
		return(edit_patch(argc, argv, prefix));
	argc--;
	argv++;

	if (addremove && take_worktree_changes)
		die("-A and -u are mutually incompatible");
	if (!show_only && ignore_missing)
		die("Option --ignore-missing can only be used together with --dry-run");
	if ((addremove || take_worktree_changes) && !argc) {
		static const char *here[2] = { ".", NULL };
		argc = 1;
		argv = here;
	}

	add_new_files = !take_worktree_changes && !refresh_only;
	require_pathspec = !take_worktree_changes;

	newfd = hold_locked_index(&lock_file, 1);

	flags = ((verbose ? ADD_CACHE_VERBOSE : 0) |
		 (show_only ? ADD_CACHE_PRETEND : 0) |
		 (intent_to_add ? ADD_CACHE_INTENT : 0) |
		 (ignore_add_errors ? ADD_CACHE_IGNORE_ERRORS : 0) |
		 (!(addremove || take_worktree_changes)
		  ? ADD_CACHE_IGNORE_REMOVAL : 0));

	if (require_pathspec && argc == 0) {
		fprintf(stderr, "Nothing specified, nothing added.\n");
		fprintf(stderr, "Maybe you wanted to say 'git add .'?\n");
		return 0;
	}
	pathspec = validate_pathspec(argc, argv, prefix);

	if (read_cache() < 0)
		die("index file corrupt");
	treat_gitlinks(pathspec);

	if (add_new_files) {
		int baselen;

		/* Set up the default git porcelain excludes */
		memset(&dir, 0, sizeof(dir));
		if (!ignored_too) {
			dir.flags |= DIR_COLLECT_IGNORED;
			setup_standard_excludes(&dir);
		}

		/* This picks up the paths that are not tracked */
		baselen = fill_directory(&dir, pathspec);
		if (pathspec)
			seen = prune_directory(&dir, pathspec, baselen);
	}

	if (refresh_only) {
		refresh(verbose, pathspec);
		goto finish;
	}

	if (pathspec) {
		int i;
		if (!seen)
			seen = find_used_pathspec(pathspec);
		for (i = 0; pathspec[i]; i++) {
			if (!seen[i] && pathspec[i][0]
			    && !file_exists(pathspec[i])) {
				if (ignore_missing) {
					if (excluded(&dir, pathspec[i], DT_UNKNOWN))
						dir_add_ignored(&dir, pathspec[i], strlen(pathspec[i]));
				} else
					die("pathspec '%s' did not match any files",
					    pathspec[i]);
			}
		}
		free(seen);
	}

	exit_status |= add_files_to_cache(prefix, pathspec, flags);

	if (add_new_files)
		exit_status |= add_files(&dir, flags);

 finish:
	if (active_cache_changed) {
		if (write_cache(newfd, active_cache, active_nr) ||
		    commit_locked_index(&lock_file))
			die("Unable to write new index file");
	}

	return exit_status;
}
Exemplo n.º 4
0
Arquivo: add.c Projeto: 13leaf/git
int cmd_add(int argc, const char **argv, const char *prefix)
{
	int exit_status = 0;
	int newfd;
	struct pathspec pathspec;
	struct dir_struct dir;
	int flags;
	int add_new_files;
	int require_pathspec;
	char *seen = NULL;
	int implicit_dot = 0;
	struct update_callback_data update_data;

	git_config(add_config, NULL);

	argc = parse_options(argc, argv, prefix, builtin_add_options,
			  builtin_add_usage, PARSE_OPT_KEEP_ARGV0);
	if (patch_interactive)
		add_interactive = 1;
	if (add_interactive)
		exit(interactive_add(argc - 1, argv + 1, prefix, patch_interactive));

	if (edit_interactive)
		return(edit_patch(argc, argv, prefix));
	argc--;
	argv++;

	if (0 <= addremove_explicit)
		addremove = addremove_explicit;
	else if (take_worktree_changes && ADDREMOVE_DEFAULT)
		addremove = 0; /* "-u" was given but not "-A" */

	if (addremove && take_worktree_changes)
		die(_("-A and -u are mutually incompatible"));

	/*
	 * Warn when "git add pathspec..." was given without "-u" or "-A"
	 * and pathspec... covers a removed path.
	 */
	memset(&update_data, 0, sizeof(update_data));
	if (!take_worktree_changes && addremove_explicit < 0)
		update_data.warn_add_would_remove = 1;

	if (!take_worktree_changes && addremove_explicit < 0 && argc)
		/*
		 * Turn "git add pathspec..." to "git add -A pathspec..."
		 * in Git 2.0 but not yet
		 */
		; /* addremove = 1; */

	if (!show_only && ignore_missing)
		die(_("Option --ignore-missing can only be used together with --dry-run"));
	if (addremove) {
		option_with_implicit_dot = "--all";
		short_option_with_implicit_dot = "-A";
	}
	if (take_worktree_changes) {
		option_with_implicit_dot = "--update";
		short_option_with_implicit_dot = "-u";
	}
	if (option_with_implicit_dot && !argc) {
		static const char *here[2] = { ".", NULL };
		argc = 1;
		argv = here;
		implicit_dot = 1;
	}

	add_new_files = !take_worktree_changes && !refresh_only;
	require_pathspec = !take_worktree_changes;

	newfd = hold_locked_index(&lock_file, 1);

	flags = ((verbose ? ADD_CACHE_VERBOSE : 0) |
		 (show_only ? ADD_CACHE_PRETEND : 0) |
		 (intent_to_add ? ADD_CACHE_INTENT : 0) |
		 (ignore_add_errors ? ADD_CACHE_IGNORE_ERRORS : 0) |
		 (!(addremove || take_worktree_changes)
		  ? ADD_CACHE_IGNORE_REMOVAL : 0)) |
		 (implicit_dot ? ADD_CACHE_IMPLICIT_DOT : 0);

	if (require_pathspec && argc == 0) {
		fprintf(stderr, _("Nothing specified, nothing added.\n"));
		fprintf(stderr, _("Maybe you wanted to say 'git add .'?\n"));
		return 0;
	}

	if (read_cache() < 0)
		die(_("index file corrupt"));

	/*
	 * Check the "pathspec '%s' did not match any files" block
	 * below before enabling new magic.
	 */
	parse_pathspec(&pathspec, 0,
		       PATHSPEC_PREFER_FULL |
		       PATHSPEC_SYMLINK_LEADING_PATH |
		       PATHSPEC_STRIP_SUBMODULE_SLASH_EXPENSIVE,
		       prefix, argv);

	if (add_new_files) {
		int baselen;
		struct pathspec empty_pathspec;

		/* Set up the default git porcelain excludes */
		memset(&dir, 0, sizeof(dir));
		if (!ignored_too) {
			dir.flags |= DIR_COLLECT_IGNORED;
			setup_standard_excludes(&dir);
		}

		memset(&empty_pathspec, 0, sizeof(empty_pathspec));
		/* This picks up the paths that are not tracked */
		baselen = fill_directory(&dir, implicit_dot ? &empty_pathspec : &pathspec);
		if (pathspec.nr)
			seen = prune_directory(&dir, &pathspec, baselen,
					implicit_dot ? WARN_IMPLICIT_DOT : 0);
	}

	if (refresh_only) {
		refresh(verbose, &pathspec);
		goto finish;
	}
	if (implicit_dot && prefix)
		refresh_cache(REFRESH_QUIET);

	if (pathspec.nr) {
		int i;

		if (!seen)
			seen = find_pathspecs_matching_against_index(&pathspec);

		/*
		 * file_exists() assumes exact match
		 */
		GUARD_PATHSPEC(&pathspec,
			       PATHSPEC_FROMTOP |
			       PATHSPEC_LITERAL |
			       PATHSPEC_GLOB |
			       PATHSPEC_ICASE);

		for (i = 0; i < pathspec.nr; i++) {
			const char *path = pathspec.items[i].match;
			if (!seen[i] &&
			    ((pathspec.items[i].magic &
			      (PATHSPEC_GLOB | PATHSPEC_ICASE)) ||
			     !file_exists(path))) {
				if (ignore_missing) {
					int dtype = DT_UNKNOWN;
					if (is_excluded(&dir, path, &dtype))
						dir_add_ignored(&dir, path, pathspec.items[i].len);
				} else
					die(_("pathspec '%s' did not match any files"),
					    pathspec.items[i].original);
			}
		}
		free(seen);
	}

	plug_bulk_checkin();

	if ((flags & ADD_CACHE_IMPLICIT_DOT) && prefix) {
		/*
		 * Check for modified files throughout the worktree so
		 * update_callback has a chance to warn about changes
		 * outside the cwd.
		 */
		update_data.implicit_dot = prefix;
		update_data.implicit_dot_len = strlen(prefix);
		free_pathspec(&pathspec);
		memset(&pathspec, 0, sizeof(pathspec));
	}
	update_data.flags = flags & ~ADD_CACHE_IMPLICIT_DOT;
	update_files_in_cache(prefix, &pathspec, &update_data);

	exit_status |= !!update_data.add_errors;
	if (add_new_files)
		exit_status |= add_files(&dir, flags);

	unplug_bulk_checkin();

finish:
	if (active_cache_changed) {
		if (write_cache(newfd, active_cache, active_nr) ||
		    commit_locked_index(&lock_file))
			die(_("Unable to write new index file"));
	}

	return exit_status;
}
Exemplo n.º 5
0
int cmd_add(int argc, const char **argv, const char *prefix)
{
	int exit_status = 0;
	int newfd;
	const char **pathspec;
	struct dir_struct dir;
	int flags;
	int add_new_files;
	int require_pathspec;

	argc = parse_options(argc, argv, builtin_add_options,
			  builtin_add_usage, 0);
	if (patch_interactive)
		add_interactive = 1;
	if (add_interactive)
		exit(interactive_add(argc, argv, prefix));

	git_config(add_config, NULL);

	if (addremove && take_worktree_changes)
		die("-A and -u are mutually incompatible");
	if ((addremove || take_worktree_changes) && !argc) {
		static const char *here[2] = { ".", NULL };
		argc = 1;
		argv = here;
	}

	add_new_files = !take_worktree_changes && !refresh_only;
	require_pathspec = !take_worktree_changes;

	newfd = hold_locked_index(&lock_file, 1);

	flags = ((verbose ? ADD_CACHE_VERBOSE : 0) |
		 (show_only ? ADD_CACHE_PRETEND : 0) |
		 (intent_to_add ? ADD_CACHE_INTENT : 0) |
		 (ignore_add_errors ? ADD_CACHE_IGNORE_ERRORS : 0) |
		 (!(addremove || take_worktree_changes)
		  ? ADD_CACHE_IGNORE_REMOVAL : 0));

	if (require_pathspec && argc == 0) {
		fprintf(stderr, "Nothing specified, nothing added.\n");
		fprintf(stderr, "Maybe you wanted to say 'git add .'?\n");
		return 0;
	}
	pathspec = validate_pathspec(argc, argv, prefix);

	if (read_cache() < 0)
		die("index file corrupt");
	treat_gitlinks(pathspec);

	if (add_new_files)
		/* This picks up the paths that are not tracked */
		fill_directory(&dir, pathspec, ignored_too);

	if (refresh_only) {
		refresh(verbose, pathspec);
		goto finish;
	}

	exit_status |= add_files_to_cache(prefix, pathspec, flags);

	if (add_new_files)
		exit_status |= add_files(&dir, flags);

 finish:
	if (active_cache_changed) {
		if (write_cache(newfd, active_cache, active_nr) ||
		    commit_locked_index(&lock_file))
			die("Unable to write new index file");
	}

	return exit_status;
}
Exemplo n.º 6
0
static char *prepare_index(int argc, const char **argv, const char *prefix)
{
	int fd;
	struct path_list partial;
	const char **pathspec = NULL;

	if (interactive) {
		interactive_add(argc, argv, prefix);
		commit_style = COMMIT_AS_IS;
		return get_index_file();
	}

	if (read_cache() < 0)
		die("index file corrupt");

	if (*argv)
		pathspec = get_pathspec(prefix, argv);

	/*
	 * Non partial, non as-is commit.
	 *
	 * (1) get the real index;
	 * (2) update the_index as necessary;
	 * (3) write the_index out to the real index (still locked);
	 * (4) return the name of the locked index file.
	 *
	 * The caller should run hooks on the locked real index, and
	 * (A) if all goes well, commit the real index;
	 * (B) on failure, rollback the real index.
	 */
	if (all || (also && pathspec && *pathspec)) {
		int fd = hold_locked_index(&index_lock, 1);
		add_files_to_cache(0, also ? prefix : NULL, pathspec);
		refresh_cache(REFRESH_QUIET);
		if (write_cache(fd, active_cache, active_nr) ||
		    close_lock_file(&index_lock))
			die("unable to write new_index file");
		commit_style = COMMIT_NORMAL;
		return index_lock.filename;
	}

	/*
	 * As-is commit.
	 *
	 * (1) return the name of the real index file.
	 *
	 * The caller should run hooks on the real index, and run
	 * hooks on the real index, and create commit from the_index.
	 * We still need to refresh the index here.
	 */
	if (!pathspec || !*pathspec) {
		fd = hold_locked_index(&index_lock, 1);
		refresh_cache(REFRESH_QUIET);
		if (write_cache(fd, active_cache, active_nr) ||
		    commit_locked_index(&index_lock))
			die("unable to write new_index file");
		commit_style = COMMIT_AS_IS;
		return get_index_file();
	}

	/*
	 * A partial commit.
	 *
	 * (0) find the set of affected paths;
	 * (1) get lock on the real index file;
	 * (2) update the_index with the given paths;
	 * (3) write the_index out to the real index (still locked);
	 * (4) get lock on the false index file;
	 * (5) reset the_index from HEAD;
	 * (6) update the_index the same way as (2);
	 * (7) write the_index out to the false index file;
	 * (8) return the name of the false index file (still locked);
	 *
	 * The caller should run hooks on the locked false index, and
	 * create commit from it.  Then
	 * (A) if all goes well, commit the real index;
	 * (B) on failure, rollback the real index;
	 * In either case, rollback the false index.
	 */
	commit_style = COMMIT_PARTIAL;

	if (file_exists(git_path("MERGE_HEAD")))
		die("cannot do a partial commit during a merge.");

	memset(&partial, 0, sizeof(partial));
	partial.strdup_paths = 1;
	if (list_paths(&partial, initial_commit ? NULL : "HEAD", prefix, pathspec))
		exit(1);

	discard_cache();
	if (read_cache() < 0)
		die("cannot read the index");

	fd = hold_locked_index(&index_lock, 1);
	add_remove_files(&partial);
	refresh_cache(REFRESH_QUIET);
	if (write_cache(fd, active_cache, active_nr) ||
	    close_lock_file(&index_lock))
		die("unable to write new_index file");

	fd = hold_lock_file_for_update(&false_lock,
				       git_path("next-index-%d", getpid()), 1);

	create_base_index();
	add_remove_files(&partial);
	refresh_cache(REFRESH_QUIET);

	if (write_cache(fd, active_cache, active_nr) ||
	    close_lock_file(&false_lock))
		die("unable to write temporary index file");

	discard_cache();
	read_cache_from(false_lock.filename);

	return false_lock.filename;
}