Exemple #1
0
LIBLOG_ABI_PRIVATE int __android_log_is_debuggable()
{
    static uint32_t serial;
    static struct cache_char tag_cache;
    static const char key[] = "ro.debuggable";
    int ret;

    if (tag_cache.c) { /* ro property does not change after set */
        ret = tag_cache.c == '1';
    } else if (lock()) {
        struct cache_char temp_cache = { { NULL, -1 }, '\0' };
        refresh_cache(&temp_cache, key);
        ret = temp_cache.c == '1';
    } else {
        int change_detected = check_cache(&tag_cache.cache);
        uint32_t current_serial = __system_property_area_serial();
        if (current_serial != serial) {
            change_detected = 1;
        }
        if (change_detected) {
            refresh_cache(&tag_cache, key);
            serial = current_serial;
        }
        ret = tag_cache.c == '1';

        unlock();
    }

    return ret;
}
static inline unsigned char do_cache2(struct cache2 *self)
{
    uint32_t current_serial;
    int change_detected;
    unsigned char c;

    if (pthread_mutex_trylock(&self->lock)) {
        /* We are willing to accept some race in this context */
        return self->evaluate(self);
    }

    change_detected = check_cache(&self->cache_persist)
                   || check_cache(&self->cache_ro);
    current_serial = __system_property_area_serial();
    if (current_serial != self->serial) {
        change_detected = 1;
    }
    if (change_detected) {
        refresh_cache(&self->cache_persist, self->key_persist);
        refresh_cache(&self->cache_ro, self->key_ro);
        self->serial = current_serial;
    }
    c = self->evaluate(self);

    pthread_mutex_unlock(&self->lock);

    return c;
}
char android_log_timestamp()
{
    static struct cache r_time_cache = { NULL, -1, 0 };
    static struct cache p_time_cache = { NULL, -1, 0 };
    char retval;

    if (pthread_mutex_trylock(&lock_timestamp)) {
        /* We are willing to accept some race in this context */
        if (!(retval = p_time_cache.c)) {
            retval = r_time_cache.c;
        }
    } else {
        static uint32_t serial;
        uint32_t current_serial = __system_property_area_serial();
        if (current_serial != serial) {
            refresh_cache(&r_time_cache, "ro.logd.timestamp");
            refresh_cache(&p_time_cache, "persist.logd.timestamp");
            serial = current_serial;
        }
        if (!(retval = p_time_cache.c)) {
            retval = r_time_cache.c;
        }

        pthread_mutex_unlock(&lock_timestamp);
    }

    return tolower(retval ?: 'r');
}
Exemple #4
0
Fichier : merge.c Projet : 1tgr/git
static int merge_trivial(struct commit *head, struct commit_list *remoteheads)
{
	unsigned char result_tree[20], result_commit[20];
	struct commit_list *parents, **pptr = &parents;
	static struct lock_file lock;

	hold_locked_index(&lock, 1);
	refresh_cache(REFRESH_QUIET);
	if (active_cache_changed &&
	    write_locked_index(&the_index, &lock, COMMIT_LOCK))
		return error(_("Unable to write index."));
	rollback_lock_file(&lock);

	write_tree_trivial(result_tree);
	printf(_("Wonderful.\n"));
	pptr = commit_list_append(head, pptr);
	pptr = commit_list_append(remoteheads->item, pptr);
	prepare_to_commit(remoteheads);
	if (commit_tree(merge_msg.buf, merge_msg.len, result_tree, parents,
			result_commit, NULL, sign_commit))
		die(_("failed to write commit object"));
	finish(head, remoteheads, result_commit, "In-index merge");
	drop_save();
	return 0;
}
Exemple #5
0
/**
 * If the work tree has unstaged or uncommitted changes, dies with the
 * appropriate message.
 */
static void die_on_unclean_work_tree(const char *prefix)
{
	struct lock_file *lock_file = xcalloc(1, sizeof(*lock_file));
	int do_die = 0;

	hold_locked_index(lock_file, 0);
	refresh_cache(REFRESH_QUIET);
	update_index_if_able(&the_index, lock_file);
	rollback_lock_file(lock_file);

	if (has_unstaged_changes(prefix)) {
		error(_("Cannot pull with rebase: You have unstaged changes."));
		do_die = 1;
	}

	if (has_uncommitted_changes(prefix)) {
		if (do_die)
			error(_("Additionally, your index contains uncommitted changes."));
		else
			error(_("Cannot pull with rebase: Your index contains uncommitted changes."));
		do_die = 1;
	}

	if (do_die)
		exit(1);
}
Exemple #6
0
static int refresh(struct refresh_params *o, unsigned int flag)
{
	setup_work_tree();
	read_cache_preload(NULL);
	*o->has_errors |= refresh_cache(o->flags | flag);
	return 0;
}
Exemple #7
0
static int try_merge_strategy(const char *strategy, struct commit_list *common,
			      const char *head_arg)
{
	int index_fd;
	struct lock_file *lock = xcalloc(1, sizeof(struct lock_file));

	index_fd = hold_locked_index(lock, 1);
	refresh_cache(REFRESH_QUIET);
	if (active_cache_changed &&
			(write_cache(index_fd, active_cache, active_nr) ||
			 commit_locked_index(lock)))
		return error(_("Unable to write index."));
	rollback_lock_file(lock);

	if (!strcmp(strategy, "recursive") || !strcmp(strategy, "subtree")) {
		int clean, x;
		struct commit *result;
		struct lock_file *lock = xcalloc(1, sizeof(struct lock_file));
		int index_fd;
		struct commit_list *reversed = NULL;
		struct merge_options o;
		struct commit_list *j;

		if (remoteheads->next) {
			error(_("Not handling anything other than two heads merge."));
			return 2;
		}

		init_merge_options(&o);
		if (!strcmp(strategy, "subtree"))
			o.subtree_shift = "";

		o.renormalize = option_renormalize;
		o.show_rename_progress =
			show_progress == -1 ? isatty(2) : show_progress;

		for (x = 0; x < xopts_nr; x++)
			if (parse_merge_opt(&o, xopts[x]))
				die(_("Unknown option for merge-recursive: -X%s"), xopts[x]);

		o.branch1 = head_arg;
		o.branch2 = remoteheads->item->util;

		for (j = common; j; j = j->next)
			commit_list_insert(j->item, &reversed);

		index_fd = hold_locked_index(lock, 1);
		clean = merge_recursive(&o, lookup_commit(head),
				remoteheads->item, reversed, &result);
		if (active_cache_changed &&
				(write_cache(index_fd, active_cache, active_nr) ||
				 commit_locked_index(lock)))
			die (_("unable to write %s"), get_index_file());
		rollback_lock_file(lock);
		return clean ? 0 : 1;
	} else {
		return try_merge_command(strategy, xopts_nr, xopts,
						common, head_arg, remoteheads);
	}
}
Exemple #8
0
static void refresh_cache_or_die(int refresh_flags)
{
	/*
	 * refresh_flags contains REFRESH_QUIET, so the only errors
	 * are for unmerged entries.
	 */
	if (refresh_cache(refresh_flags | REFRESH_IN_PORCELAIN))
		die_resolve_conflict("commit");
}
Exemple #9
0
static void refresh_index_quietly(void)
{
	struct lock_file lock_file = LOCK_INIT;
	int fd;

	fd = hold_locked_index(&lock_file, 0);
	if (fd < 0)
		return;
	discard_cache();
	read_cache();
	refresh_cache(REFRESH_QUIET|REFRESH_UNMERGED);
	update_index_if_able(&the_index, &lock_file);
}
Exemple #10
0
Fichier : merge.c Projet : 0369/git
int checkout_fast_forward(const unsigned char *head,
			  const unsigned char *remote,
			  int overwrite_ignore)
{
	struct tree *trees[MAX_UNPACK_TREES];
	struct unpack_trees_options opts;
	struct tree_desc t[MAX_UNPACK_TREES];
	int i, nr_trees = 0;
	struct dir_struct dir;
	struct lock_file *lock_file = xcalloc(1, sizeof(struct lock_file));

	refresh_cache(REFRESH_QUIET);

	hold_locked_index(lock_file, 1);

	memset(&trees, 0, sizeof(trees));
	memset(&opts, 0, sizeof(opts));
	memset(&t, 0, sizeof(t));
	if (overwrite_ignore) {
		memset(&dir, 0, sizeof(dir));
		dir.flags |= DIR_SHOW_IGNORED;
		setup_standard_excludes(&dir);
		opts.dir = &dir;
	}

	opts.head_idx = 1;
	opts.src_index = &the_index;
	opts.dst_index = &the_index;
	opts.update = 1;
	opts.verbose_update = 1;
	opts.merge = 1;
	opts.fn = twoway_merge;
	setup_unpack_trees_porcelain(&opts, "merge");

	trees[nr_trees] = parse_tree_indirect(head);
	if (!trees[nr_trees++])
		return -1;
	trees[nr_trees] = parse_tree_indirect(remote);
	if (!trees[nr_trees++])
		return -1;
	for (i = 0; i < nr_trees; i++) {
		parse_tree(trees[i]);
		init_tree_desc(t+i, trees[i]->buffer, trees[i]->size);
	}
	if (unpack_trees(nr_trees, t, &opts))
		return -1;
	if (write_locked_index(&the_index, lock_file, COMMIT_LOCK))
		die(_("unable to write new index file"));
	return 0;
}
Exemple #11
0
static void refresh_index_quietly(void)
{
	struct lock_file *lock_file;
	int fd;

	lock_file = xcalloc(1, sizeof(struct lock_file));
	fd = hold_locked_index(lock_file, 0);
	if (fd < 0)
		return;
	discard_cache();
	read_cache();
	refresh_cache(REFRESH_QUIET|REFRESH_UNMERGED);
	update_index_if_able(&the_index, lock_file);
}
Exemple #12
0
static int checkout_fast_forward(unsigned char *head, unsigned char *remote)
{
	struct tree *trees[MAX_UNPACK_TREES];
	struct unpack_trees_options opts;
	struct tree_desc t[MAX_UNPACK_TREES];
	int i, fd, nr_trees = 0;
	struct dir_struct dir;
	struct lock_file *lock_file = xcalloc(1, sizeof(struct lock_file));

	refresh_cache(REFRESH_QUIET);

	fd = hold_locked_index(lock_file, 1);

	memset(&trees, 0, sizeof(trees));
	memset(&opts, 0, sizeof(opts));
	memset(&t, 0, sizeof(t));
	memset(&dir, 0, sizeof(dir));
	dir.flags |= DIR_SHOW_IGNORED;
	dir.exclude_per_dir = ".gitignore";
	opts.dir = &dir;

	opts.head_idx = 1;
	opts.src_index = &the_index;
	opts.dst_index = &the_index;
	opts.update = 1;
	opts.verbose_update = 1;
	opts.merge = 1;
	opts.fn = twoway_merge;
	opts.msgs = get_porcelain_error_msgs();

	trees[nr_trees] = parse_tree_indirect(head);
	if (!trees[nr_trees++])
		return -1;
	trees[nr_trees] = parse_tree_indirect(remote);
	if (!trees[nr_trees++])
		return -1;
	for (i = 0; i < nr_trees; i++) {
		parse_tree(trees[i]);
		init_tree_desc(t+i, trees[i]->buffer, trees[i]->size);
	}
	if (unpack_trees(nr_trees, t, &opts))
		return -1;
	if (write_cache(fd, active_cache, active_nr) ||
		commit_locked_index(lock_file))
		die("unable to write new index file");
	return 0;
}
Exemple #13
0
static int update_index_refresh(int fd, struct lock_file *index_lock, int flags)
{
	int result;

	if (!index_lock) {
		index_lock = xcalloc(1, sizeof(struct lock_file));
		fd = hold_locked_index(index_lock, 1);
	}

	if (read_cache() < 0)
		return error("Could not read index");

	result = refresh_cache(flags) ? 1 : 0;
	if (write_cache(fd, active_cache, active_nr) ||
			commit_locked_index(index_lock))
		return error ("Could not refresh index");
	return result;
}
Exemple #14
0
Fichier : diff.c Projet : algal/git
static void refresh_index_quietly(void)
{
	struct lock_file *lock_file;
	int fd;

	lock_file = xcalloc(1, sizeof(struct lock_file));
	fd = hold_locked_index(lock_file, 0);
	if (fd < 0)
		return;
	discard_cache();
	read_cache();
	refresh_cache(REFRESH_QUIET|REFRESH_UNMERGED);

	if (active_cache_changed &&
	    !write_cache(fd, active_cache, active_nr))
		commit_locked_index(lock_file);

	rollback_lock_file(lock_file);
}
Exemple #15
0
static void restore_state(void)
{
	struct strbuf sb = STRBUF_INIT;
	const char *args[] = { "stash", "apply", NULL, NULL };

	if (is_null_sha1(stash))
		return;

	reset_hard(head, 1);

	args[2] = sha1_to_hex(stash);

	/*
	 * It is OK to ignore error here, for example when there was
	 * nothing to restore.
	 */
	run_command_v_opt(args, RUN_GIT_CMD);

	strbuf_release(&sb);
	refresh_cache(REFRESH_QUIET);
}
Exemple #16
0
static int reset_tree(struct object_id *i_tree, int update, int reset)
{
	int nr_trees = 1;
	struct unpack_trees_options opts;
	struct tree_desc t[MAX_UNPACK_TREES];
	struct tree *tree;
	struct lock_file lock_file = LOCK_INIT;

	read_cache_preload(NULL);
	if (refresh_cache(REFRESH_QUIET))
		return -1;

	hold_locked_index(&lock_file, LOCK_DIE_ON_ERROR);

	memset(&opts, 0, sizeof(opts));

	tree = parse_tree_indirect(i_tree);
	if (parse_tree(tree))
		return -1;

	init_tree_desc(t, tree->buffer, tree->size);

	opts.head_idx = 1;
	opts.src_index = &the_index;
	opts.dst_index = &the_index;
	opts.merge = 1;
	opts.reset = reset;
	opts.update = update;
	opts.fn = oneway_merge;

	if (unpack_trees(nr_trees, t, &opts))
		return -1;

	if (write_locked_index(&the_index, &lock_file, COMMIT_LOCK))
		return error(_("unable to write new index file"));

	return 0;
}
Exemple #17
0
static int merge_working_tree(const struct checkout_opts *opts,
			      struct branch_info *old_branch_info,
			      struct branch_info *new_branch_info,
			      int *writeout_error)
{
	int ret;
	struct lock_file lock_file = LOCK_INIT;

	hold_locked_index(&lock_file, LOCK_DIE_ON_ERROR);
	if (read_cache_preload(NULL) < 0)
		return error(_("index file corrupt"));

	resolve_undo_clear();
	if (opts->force) {
		ret = reset_tree(get_commit_tree(new_branch_info->commit),
				 opts, 1, writeout_error);
		if (ret)
			return ret;
	} else {
		struct tree_desc trees[2];
		struct tree *tree;
		struct unpack_trees_options topts;

		memset(&topts, 0, sizeof(topts));
		topts.head_idx = -1;
		topts.src_index = &the_index;
		topts.dst_index = &the_index;

		setup_unpack_trees_porcelain(&topts, "checkout");

		refresh_cache(REFRESH_QUIET);

		if (unmerged_cache()) {
			error(_("you need to resolve your current index first"));
			return 1;
		}

		/* 2-way merge to the new branch */
		topts.initial_checkout = is_cache_unborn();
		topts.update = 1;
		topts.merge = 1;
		topts.gently = opts->merge && old_branch_info->commit;
		topts.verbose_update = opts->show_progress;
		topts.fn = twoway_merge;
		if (opts->overwrite_ignore) {
			topts.dir = xcalloc(1, sizeof(*topts.dir));
			topts.dir->flags |= DIR_SHOW_IGNORED;
			setup_standard_excludes(topts.dir);
		}
		tree = parse_tree_indirect(old_branch_info->commit ?
					   &old_branch_info->commit->object.oid :
					   the_hash_algo->empty_tree);
		init_tree_desc(&trees[0], tree->buffer, tree->size);
		tree = parse_tree_indirect(&new_branch_info->commit->object.oid);
		init_tree_desc(&trees[1], tree->buffer, tree->size);

		ret = unpack_trees(2, trees, &topts);
		clear_unpack_trees_porcelain(&topts);
		if (ret == -1) {
			/*
			 * Unpack couldn't do a trivial merge; either
			 * give up or do a real merge, depending on
			 * whether the merge flag was used.
			 */
			struct tree *result;
			struct tree *work;
			struct merge_options o;
			if (!opts->merge)
				return 1;

			/*
			 * Without old_branch_info->commit, the below is the same as
			 * the two-tree unpack we already tried and failed.
			 */
			if (!old_branch_info->commit)
				return 1;

			/* Do more real merge */

			/*
			 * We update the index fully, then write the
			 * tree from the index, then merge the new
			 * branch with the current tree, with the old
			 * branch as the base. Then we reset the index
			 * (but not the working tree) to the new
			 * branch, leaving the working tree as the
			 * merged version, but skipping unmerged
			 * entries in the index.
			 */

			add_files_to_cache(NULL, NULL, 0);
			/*
			 * NEEDSWORK: carrying over local changes
			 * when branches have different end-of-line
			 * normalization (or clean+smudge rules) is
			 * a pain; plumb in an option to set
			 * o.renormalize?
			 */
			init_merge_options(&o, the_repository);
			o.verbosity = 0;
			work = write_tree_from_memory(&o);

			ret = reset_tree(get_commit_tree(new_branch_info->commit),
					 opts, 1,
					 writeout_error);
			if (ret)
				return ret;
			o.ancestor = old_branch_info->name;
			o.branch1 = new_branch_info->name;
			o.branch2 = "local";
			ret = merge_trees(&o,
					  get_commit_tree(new_branch_info->commit),
					  work,
					  get_commit_tree(old_branch_info->commit),
					  &result);
			if (ret < 0)
				exit(128);
			ret = reset_tree(get_commit_tree(new_branch_info->commit),
					 opts, 0,
					 writeout_error);
			strbuf_release(&o.obuf);
			if (ret)
				return ret;
		}
	}

	if (!active_cache_tree)
		active_cache_tree = cache_tree();

	if (!cache_tree_fully_valid(active_cache_tree))
		cache_tree_update(&the_index, WRITE_TREE_SILENT | WRITE_TREE_REPAIR);

	if (write_locked_index(&the_index, &lock_file, COMMIT_LOCK))
		die(_("unable to write new index file"));

	if (!opts->force && !opts->quiet)
		show_local_changes(&new_branch_info->commit->object, &opts->diff_options);

	return 0;
}
static int __android_log_level(const char *tag, int default_prio)
{
    /* sizeof() is used on this array below */
    static const char log_namespace[] = "persist.log.tag.";
    static const size_t base_offset = 8; /* skip "persist." */
    /* calculate the size of our key temporary buffer */
    const size_t taglen = (tag && *tag) ? strlen(tag) : 0;
    /* sizeof(log_namespace) = strlen(log_namespace) + 1 */
    char key[sizeof(log_namespace) + taglen]; /* may be > PROPERTY_KEY_MAX */
    char *kp;
    size_t i;
    char c = 0;
    /*
     * Single layer cache of four properties. Priorities are:
     *    log.tag.<tag>
     *    persist.log.tag.<tag>
     *    log.tag
     *    persist.log.tag
     * Where the missing tag matches all tags and becomes the
     * system global default. We do not support ro.log.tag* .
     */
    static char last_tag[PROP_NAME_MAX];
    static uint32_t global_serial;
    /* some compilers erroneously see uninitialized use. !not_locked */
    uint32_t current_global_serial = 0;
    static struct cache tag_cache[2];
    static struct cache global_cache[2];
    int change_detected;
    int global_change_detected;
    int not_locked;

    strcpy(key, log_namespace);

    global_change_detected = change_detected = not_locked = lock();

    if (!not_locked) {
        /*
         *  check all known serial numbers to changes.
         */
        for (i = 0; i < (sizeof(tag_cache) / sizeof(tag_cache[0])); ++i) {
            if (check_cache(&tag_cache[i])) {
                change_detected = 1;
            }
        }
        for (i = 0; i < (sizeof(global_cache) / sizeof(global_cache[0])); ++i) {
            if (check_cache(&global_cache[i])) {
                global_change_detected = 1;
            }
        }

        current_global_serial = __system_property_area_serial();
        if (current_global_serial != global_serial) {
            change_detected = 1;
            global_change_detected = 1;
        }
    }

    if (taglen) {
        int local_change_detected = change_detected;
        if (!not_locked) {
            if (!last_tag[0]
                    || (last_tag[0] != tag[0])
                    || strncmp(last_tag + 1, tag + 1, sizeof(last_tag) - 1)) {
                /* invalidate log.tag.<tag> cache */
                for (i = 0; i < (sizeof(tag_cache) / sizeof(tag_cache[0])); ++i) {
                    tag_cache[i].pinfo = NULL;
                    tag_cache[i].c = '\0';
                }
                last_tag[0] = '\0';
                local_change_detected = 1;
            }
            if (!last_tag[0]) {
                strncpy(last_tag, tag, sizeof(last_tag));
            }
        }
        strcpy(key + sizeof(log_namespace) - 1, tag);

        kp = key;
        for (i = 0; i < (sizeof(tag_cache) / sizeof(tag_cache[0])); ++i) {
            struct cache *cache = &tag_cache[i];
            struct cache temp_cache;

            if (not_locked) {
                temp_cache.pinfo = NULL;
                temp_cache.c = '\0';
                cache = &temp_cache;
            }
            if (local_change_detected) {
                refresh_cache(cache, kp);
            }

            if (cache->c) {
                c = cache->c;
                break;
            }

            kp = key + base_offset;
        }
    }

    switch (toupper(c)) { /* if invalid, resort to global */
    case 'V':
    case 'D':
    case 'I':
    case 'W':
    case 'E':
    case 'F': /* Not officially supported */
    case 'A':
    case 'S':
    case BOOLEAN_FALSE: /* Not officially supported */
        break;
    default:
        /* clear '.' after log.tag */
        key[sizeof(log_namespace) - 2] = '\0';

        kp = key;
        for (i = 0; i < (sizeof(global_cache) / sizeof(global_cache[0])); ++i) {
            struct cache *cache = &global_cache[i];
            struct cache temp_cache;

            if (not_locked) {
                temp_cache = *cache;
                if (temp_cache.pinfo != cache->pinfo) { /* check atomic */
                    temp_cache.pinfo = NULL;
                    temp_cache.c = '\0';
                }
                cache = &temp_cache;
            }
            if (global_change_detected) {
                refresh_cache(cache, kp);
            }

            if (cache->c) {
                c = cache->c;
                break;
            }

            kp = key + base_offset;
        }
        break;
    }

    if (!not_locked) {
        global_serial = current_global_serial;
        unlock();
    }

    switch (toupper(c)) {
    case 'V': return ANDROID_LOG_VERBOSE;
    case 'D': return ANDROID_LOG_DEBUG;
    case 'I': return ANDROID_LOG_INFO;
    case 'W': return ANDROID_LOG_WARN;
    case 'E': return ANDROID_LOG_ERROR;
    case 'F': /* FALLTHRU */ /* Not officially supported */
    case 'A': return ANDROID_LOG_FATAL;
    case BOOLEAN_FALSE: /* FALLTHRU */ /* Not Officially supported */
    case 'S': return -1; /* ANDROID_LOG_SUPPRESS */
    }
    return default_prio;
}
Exemple #19
0
int cmd_merge(int argc, const char **argv, const char *prefix)
{
	unsigned char result_tree[20];
	unsigned char stash[20];
	unsigned char head_sha1[20];
	struct commit *head_commit;
	struct strbuf buf = STRBUF_INIT;
	const char *head_arg;
	int flag, i, ret = 0, head_subsumed;
	int best_cnt = -1, merge_was_ok = 0, automerge_was_ok = 0;
	struct commit_list *common = NULL;
	const char *best_strategy = NULL, *wt_strategy = NULL;
	struct commit_list *remoteheads, *p;
	void *branch_to_free;

	if (argc == 2 && !strcmp(argv[1], "-h"))
		usage_with_options(builtin_merge_usage, builtin_merge_options);

	/*
	 * Check if we are _not_ on a detached HEAD, i.e. if there is a
	 * current branch.
	 */
	branch = branch_to_free = resolve_refdup("HEAD", head_sha1, 0, &flag);
	if (branch && !prefixcmp(branch, "refs/heads/"))
		branch += 11;
	if (!branch || is_null_sha1(head_sha1))
		head_commit = NULL;
	else
		head_commit = lookup_commit_or_die(head_sha1, "HEAD");

	git_config(git_merge_config, NULL);

	if (branch_mergeoptions)
		parse_branch_merge_options(branch_mergeoptions);
	argc = parse_options(argc, argv, prefix, builtin_merge_options,
			builtin_merge_usage, 0);
	if (shortlog_len < 0)
		shortlog_len = (merge_log_config > 0) ? merge_log_config : 0;

	if (verbosity < 0 && show_progress == -1)
		show_progress = 0;

	if (abort_current_merge) {
		int nargc = 2;
		const char *nargv[] = {"reset", "--merge", NULL};

		if (!file_exists(git_path("MERGE_HEAD")))
			die(_("There is no merge to abort (MERGE_HEAD missing)."));

		/* Invoke 'git reset --merge' */
		ret = cmd_reset(nargc, nargv, prefix);
		goto done;
	}

	if (read_cache_unmerged())
		die_resolve_conflict("merge");

	if (file_exists(git_path("MERGE_HEAD"))) {
		/*
		 * There is no unmerged entry, don't advise 'git
		 * add/rm <file>', just 'git commit'.
		 */
		if (advice_resolve_conflict)
			die(_("You have not concluded your merge (MERGE_HEAD exists).\n"
				  "Please, commit your changes before you can merge."));
		else
			die(_("You have not concluded your merge (MERGE_HEAD exists)."));
	}
	if (file_exists(git_path("CHERRY_PICK_HEAD"))) {
		if (advice_resolve_conflict)
			die(_("You have not concluded your cherry-pick (CHERRY_PICK_HEAD exists).\n"
			    "Please, commit your changes before you can merge."));
		else
			die(_("You have not concluded your cherry-pick (CHERRY_PICK_HEAD exists)."));
	}
	resolve_undo_clear();

	if (verbosity < 0)
		show_diffstat = 0;

	if (squash) {
		if (!allow_fast_forward)
			die(_("You cannot combine --squash with --no-ff."));
		option_commit = 0;
	}

	if (!allow_fast_forward && fast_forward_only)
		die(_("You cannot combine --no-ff with --ff-only."));

	if (!abort_current_merge) {
		if (!argc) {
			if (default_to_upstream)
				argc = setup_with_upstream(&argv);
			else
				die(_("No commit specified and merge.defaultToUpstream not set."));
		} else if (argc == 1 && !strcmp(argv[0], "-"))
			argv[0] = "@{-1}";
	}
	if (!argc)
		usage_with_options(builtin_merge_usage,
			builtin_merge_options);

	/*
	 * This could be traditional "merge <msg> HEAD <commit>..."  and
	 * the way we can tell it is to see if the second token is HEAD,
	 * but some people might have misused the interface and used a
	 * committish that is the same as HEAD there instead.
	 * Traditional format never would have "-m" so it is an
	 * additional safety measure to check for it.
	 */

	if (!have_message && head_commit &&
	    is_old_style_invocation(argc, argv, head_commit->object.sha1)) {
		strbuf_addstr(&merge_msg, argv[0]);
		head_arg = argv[1];
		argv += 2;
		argc -= 2;
		remoteheads = collect_parents(head_commit, &head_subsumed, argc, argv);
	} else if (!head_commit) {
		struct commit *remote_head;
		/*
		 * If the merged head is a valid one there is no reason
		 * to forbid "git merge" into a branch yet to be born.
		 * We do the same for "git pull".
		 */
		if (argc != 1)
			die(_("Can merge only exactly one commit into "
				"empty head"));
		if (squash)
			die(_("Squash commit into empty head not supported yet"));
		if (!allow_fast_forward)
			die(_("Non-fast-forward commit does not make sense into "
			    "an empty head"));
		remoteheads = collect_parents(head_commit, &head_subsumed, argc, argv);
		remote_head = remoteheads->item;
		if (!remote_head)
			die(_("%s - not something we can merge"), argv[0]);
		read_empty(remote_head->object.sha1, 0);
		update_ref("initial pull", "HEAD", remote_head->object.sha1,
			   NULL, 0, DIE_ON_ERR);
		goto done;
	} else {
		struct strbuf merge_names = STRBUF_INIT;

		/* We are invoked directly as the first-class UI. */
		head_arg = "HEAD";

		/*
		 * All the rest are the commits being merged; prepare
		 * the standard merge summary message to be appended
		 * to the given message.
		 */
		remoteheads = collect_parents(head_commit, &head_subsumed, argc, argv);
		for (p = remoteheads; p; p = p->next)
			merge_name(merge_remote_util(p->item)->name, &merge_names);

		if (!have_message || shortlog_len) {
			struct fmt_merge_msg_opts opts;
			memset(&opts, 0, sizeof(opts));
			opts.add_title = !have_message;
			opts.shortlog_len = shortlog_len;

			fmt_merge_msg(&merge_names, &merge_msg, &opts);
			if (merge_msg.len)
				strbuf_setlen(&merge_msg, merge_msg.len - 1);
		}
	}

	if (!head_commit || !argc)
		usage_with_options(builtin_merge_usage,
			builtin_merge_options);

	strbuf_addstr(&buf, "merge");
	for (p = remoteheads; p; p = p->next)
		strbuf_addf(&buf, " %s", merge_remote_util(p->item)->name);
	setenv("GIT_REFLOG_ACTION", buf.buf, 0);
	strbuf_reset(&buf);

	for (p = remoteheads; p; p = p->next) {
		struct commit *commit = p->item;
		strbuf_addf(&buf, "GITHEAD_%s",
			    sha1_to_hex(commit->object.sha1));
		setenv(buf.buf, merge_remote_util(commit)->name, 1);
		strbuf_reset(&buf);
		if (!fast_forward_only &&
		    merge_remote_util(commit) &&
		    merge_remote_util(commit)->obj &&
		    merge_remote_util(commit)->obj->type == OBJ_TAG)
			allow_fast_forward = 0;
	}

	if (option_edit < 0)
		option_edit = default_edit_option();

	if (!use_strategies) {
		if (!remoteheads)
			; /* already up-to-date */
		else if (!remoteheads->next)
			add_strategies(pull_twohead, DEFAULT_TWOHEAD);
		else
			add_strategies(pull_octopus, DEFAULT_OCTOPUS);
	}

	for (i = 0; i < use_strategies_nr; i++) {
		if (use_strategies[i]->attr & NO_FAST_FORWARD)
			allow_fast_forward = 0;
		if (use_strategies[i]->attr & NO_TRIVIAL)
			allow_trivial = 0;
	}

	if (!remoteheads)
		; /* already up-to-date */
	else if (!remoteheads->next)
		common = get_merge_bases(head_commit, remoteheads->item, 1);
	else {
		struct commit_list *list = remoteheads;
		commit_list_insert(head_commit, &list);
		common = get_octopus_merge_bases(list);
		free(list);
	}

	update_ref("updating ORIG_HEAD", "ORIG_HEAD", head_commit->object.sha1,
		   NULL, 0, DIE_ON_ERR);

	if (remoteheads && !common)
		; /* No common ancestors found. We need a real merge. */
	else if (!remoteheads ||
		 (!remoteheads->next && !common->next &&
		  common->item == remoteheads->item)) {
		/*
		 * If head can reach all the merge then we are up to date.
		 * but first the most common case of merging one remote.
		 */
		finish_up_to_date("Already up-to-date.");
		goto done;
	} else if (allow_fast_forward && !remoteheads->next &&
			!common->next &&
			!hashcmp(common->item->object.sha1, head_commit->object.sha1)) {
		/* Again the most common case of merging one remote. */
		struct strbuf msg = STRBUF_INIT;
		struct commit *commit;
		char hex[41];

		strcpy(hex, find_unique_abbrev(head_commit->object.sha1, DEFAULT_ABBREV));

		if (verbosity >= 0)
			printf(_("Updating %s..%s\n"),
				hex,
				find_unique_abbrev(remoteheads->item->object.sha1,
				DEFAULT_ABBREV));
		strbuf_addstr(&msg, "Fast-forward");
		if (have_message)
			strbuf_addstr(&msg,
				" (no commit created; -m option ignored)");
		commit = remoteheads->item;
		if (!commit) {
			ret = 1;
			goto done;
		}

		if (checkout_fast_forward(head_commit->object.sha1,
					  commit->object.sha1,
					  overwrite_ignore)) {
			ret = 1;
			goto done;
		}

		finish(head_commit, remoteheads, commit->object.sha1, msg.buf);
		drop_save();
		goto done;
	} else if (!remoteheads->next && common->next)
		;
		/*
		 * We are not doing octopus and not fast-forward.  Need
		 * a real merge.
		 */
	else if (!remoteheads->next && !common->next && option_commit) {
		/*
		 * We are not doing octopus, not fast-forward, and have
		 * only one common.
		 */
		refresh_cache(REFRESH_QUIET);
		if (allow_trivial && !fast_forward_only) {
			/* See if it is really trivial. */
			git_committer_info(IDENT_STRICT);
			printf(_("Trying really trivial in-index merge...\n"));
			if (!read_tree_trivial(common->item->object.sha1,
					       head_commit->object.sha1,
					       remoteheads->item->object.sha1)) {
				ret = merge_trivial(head_commit, remoteheads);
				goto done;
			}
			printf(_("Nope.\n"));
		}
	} else {
		/*
		 * An octopus.  If we can reach all the remote we are up
		 * to date.
		 */
		int up_to_date = 1;
		struct commit_list *j;

		for (j = remoteheads; j; j = j->next) {
			struct commit_list *common_one;

			/*
			 * Here we *have* to calculate the individual
			 * merge_bases again, otherwise "git merge HEAD^
			 * HEAD^^" would be missed.
			 */
			common_one = get_merge_bases(head_commit, j->item, 1);
			if (hashcmp(common_one->item->object.sha1,
				j->item->object.sha1)) {
				up_to_date = 0;
				break;
			}
		}
		if (up_to_date) {
			finish_up_to_date("Already up-to-date. Yeeah!");
			goto done;
		}
	}

	if (fast_forward_only)
		die(_("Not possible to fast-forward, aborting."));

	/* We are going to make a new commit. */
	git_committer_info(IDENT_STRICT);

	/*
	 * At this point, we need a real merge.  No matter what strategy
	 * we use, it would operate on the index, possibly affecting the
	 * working tree, and when resolved cleanly, have the desired
	 * tree in the index -- this means that the index must be in
	 * sync with the head commit.  The strategies are responsible
	 * to ensure this.
	 */
	if (use_strategies_nr == 1 ||
	    /*
	     * Stash away the local changes so that we can try more than one.
	     */
	    save_state(stash))
		hashcpy(stash, null_sha1);

	for (i = 0; i < use_strategies_nr; i++) {
		int ret;
		if (i) {
			printf(_("Rewinding the tree to pristine...\n"));
			restore_state(head_commit->object.sha1, stash);
		}
		if (use_strategies_nr != 1)
			printf(_("Trying merge strategy %s...\n"),
				use_strategies[i]->name);
		/*
		 * Remember which strategy left the state in the working
		 * tree.
		 */
		wt_strategy = use_strategies[i]->name;

		ret = try_merge_strategy(use_strategies[i]->name,
					 common, remoteheads,
					 head_commit, head_arg);
		if (!option_commit && !ret) {
			merge_was_ok = 1;
			/*
			 * This is necessary here just to avoid writing
			 * the tree, but later we will *not* exit with
			 * status code 1 because merge_was_ok is set.
			 */
			ret = 1;
		}

		if (ret) {
			/*
			 * The backend exits with 1 when conflicts are
			 * left to be resolved, with 2 when it does not
			 * handle the given merge at all.
			 */
			if (ret == 1) {
				int cnt = evaluate_result();

				if (best_cnt <= 0 || cnt <= best_cnt) {
					best_strategy = use_strategies[i]->name;
					best_cnt = cnt;
				}
			}
			if (merge_was_ok)
				break;
			else
				continue;
		}

		/* Automerge succeeded. */
		write_tree_trivial(result_tree);
		automerge_was_ok = 1;
		break;
	}

	/*
	 * If we have a resulting tree, that means the strategy module
	 * auto resolved the merge cleanly.
	 */
	if (automerge_was_ok) {
		ret = finish_automerge(head_commit, head_subsumed,
				       common, remoteheads,
				       result_tree, wt_strategy);
		goto done;
	}

	/*
	 * Pick the result from the best strategy and have the user fix
	 * it up.
	 */
	if (!best_strategy) {
		restore_state(head_commit->object.sha1, stash);
		if (use_strategies_nr > 1)
			fprintf(stderr,
				_("No merge strategy handled the merge.\n"));
		else
			fprintf(stderr, _("Merge with strategy %s failed.\n"),
				use_strategies[0]->name);
		ret = 2;
		goto done;
	} else if (best_strategy == wt_strategy)
		; /* We already have its result in the working tree. */
	else {
		printf(_("Rewinding the tree to pristine...\n"));
		restore_state(head_commit->object.sha1, stash);
		printf(_("Using the %s to prepare resolving by hand.\n"),
			best_strategy);
		try_merge_strategy(best_strategy, common, remoteheads,
				   head_commit, head_arg);
	}

	if (squash)
		finish(head_commit, remoteheads, NULL, NULL);
	else
		write_merge_state(remoteheads);

	if (merge_was_ok)
		fprintf(stderr, _("Automatic merge went well; "
			"stopped before committing as requested\n"));
	else
		ret = suggest_conflicts(option_renormalize);

done:
	free(branch_to_free);
	return ret;
}
Exemple #20
0
int cmd_update_index(int argc, const char **argv, const char *prefix)
{
	int i, newfd, entries, has_errors = 0, line_termination = '\n';
	int allow_options = 1;
	int read_from_stdin = 0;
	int prefix_length = prefix ? strlen(prefix) : 0;
	char set_executable_bit = 0;
	unsigned int refresh_flags = 0;
	int lock_error = 0;
	struct lock_file *lock_file;

	git_config(git_default_config, NULL);

	/* We can't free this memory, it becomes part of a linked list parsed atexit() */
	lock_file = xcalloc(1, sizeof(struct lock_file));

	newfd = hold_locked_index(lock_file, 0);
	if (newfd < 0)
		lock_error = errno;

	entries = read_cache();
	if (entries < 0)
		die("cache corrupted");

	for (i = 1 ; i < argc; i++) {
		const char *path = argv[i];
		const char *p;

		if (allow_options && *path == '-') {
			if (!strcmp(path, "--")) {
				allow_options = 0;
				continue;
			}
			if (!strcmp(path, "-q")) {
				refresh_flags |= REFRESH_QUIET;
				continue;
			}
			if (!strcmp(path, "--ignore-submodules")) {
				refresh_flags |= REFRESH_IGNORE_SUBMODULES;
				continue;
			}
			if (!strcmp(path, "--add")) {
				allow_add = 1;
				continue;
			}
			if (!strcmp(path, "--replace")) {
				allow_replace = 1;
				continue;
			}
			if (!strcmp(path, "--remove")) {
				allow_remove = 1;
				continue;
			}
			if (!strcmp(path, "--unmerged")) {
				refresh_flags |= REFRESH_UNMERGED;
				continue;
			}
			if (!strcmp(path, "--refresh")) {
				setup_work_tree();
				has_errors |= refresh_cache(refresh_flags);
				continue;
			}
			if (!strcmp(path, "--really-refresh")) {
				setup_work_tree();
				has_errors |= refresh_cache(REFRESH_REALLY | refresh_flags);
				continue;
			}
			if (!strcmp(path, "--cacheinfo")) {
				unsigned char sha1[20];
				unsigned int mode;

				if (i+3 >= argc)
					die("git update-index: --cacheinfo <mode> <sha1> <path>");

				if (strtoul_ui(argv[i+1], 8, &mode) ||
				    get_sha1_hex(argv[i+2], sha1) ||
				    add_cacheinfo(mode, sha1, argv[i+3], 0))
					die("git update-index: --cacheinfo"
					    " cannot add %s", argv[i+3]);
				i += 3;
				continue;
			}
			if (!strcmp(path, "--chmod=-x") ||
			    !strcmp(path, "--chmod=+x")) {
				if (argc <= i+1)
					die("git update-index: %s <path>", path);
				set_executable_bit = path[8];
				continue;
			}
			if (!strcmp(path, "--assume-unchanged")) {
				mark_valid_only = MARK_VALID;
				continue;
			}
			if (!strcmp(path, "--no-assume-unchanged")) {
				mark_valid_only = UNMARK_VALID;
				continue;
			}
			if (!strcmp(path, "--info-only")) {
				info_only = 1;
				continue;
			}
			if (!strcmp(path, "--force-remove")) {
				force_remove = 1;
				continue;
			}
			if (!strcmp(path, "-z")) {
				line_termination = 0;
				continue;
			}
			if (!strcmp(path, "--stdin")) {
				if (i != argc - 1)
					die("--stdin must be at the end");
				read_from_stdin = 1;
				break;
			}
			if (!strcmp(path, "--index-info")) {
				if (i != argc - 1)
					die("--index-info must be at the end");
				allow_add = allow_replace = allow_remove = 1;
				read_index_info(line_termination);
				break;
			}
			if (!strcmp(path, "--unresolve")) {
				has_errors = do_unresolve(argc - i, argv + i,
							  prefix, prefix_length);
				if (has_errors)
					active_cache_changed = 0;
				goto finish;
			}
			if (!strcmp(path, "--again") || !strcmp(path, "-g")) {
				setup_work_tree();
				has_errors = do_reupdate(argc - i, argv + i,
							 prefix, prefix_length);
				if (has_errors)
					active_cache_changed = 0;
				goto finish;
			}
			if (!strcmp(path, "--ignore-missing")) {
				refresh_flags |= REFRESH_IGNORE_MISSING;
				continue;
			}
			if (!strcmp(path, "--verbose")) {
				verbose = 1;
				continue;
			}
			if (!strcmp(path, "-h") || !strcmp(path, "--help"))
				usage(update_index_usage);
			die("unknown option %s", path);
		}
		setup_work_tree();
		p = prefix_path(prefix, prefix_length, path);
		update_one(p, NULL, 0);
		if (set_executable_bit)
			chmod_path(set_executable_bit, p);
		if (p < path || p > path + strlen(path))
			free((char*)p);
	}
	if (read_from_stdin) {
		struct strbuf buf = STRBUF_INIT, nbuf = STRBUF_INIT;

		setup_work_tree();
		while (strbuf_getline(&buf, stdin, line_termination) != EOF) {
			const char *p;
			if (line_termination && buf.buf[0] == '"') {
				strbuf_reset(&nbuf);
				if (unquote_c_style(&nbuf, buf.buf, NULL))
					die("line is badly quoted");
				strbuf_swap(&buf, &nbuf);
			}
			p = prefix_path(prefix, prefix_length, buf.buf);
			update_one(p, NULL, 0);
			if (set_executable_bit)
				chmod_path(set_executable_bit, p);
			if (p < buf.buf || p > buf.buf + buf.len)
				free((char *)p);
		}
		strbuf_release(&nbuf);
		strbuf_release(&buf);
	}

 finish:
	if (active_cache_changed) {
		if (newfd < 0) {
			if (refresh_flags & REFRESH_QUIET)
				exit(128);
			unable_to_lock_index_die(get_index_file(), lock_error);
		}
		if (write_cache(newfd, active_cache, active_nr) ||
		    commit_locked_index(lock_file))
			die("Unable to write new index file");
	}

	rollback_lock_file(lock_file);

	return has_errors ? 1 : 0;
}
Exemple #21
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;
}
Exemple #22
0
int checkout_fast_forward(const struct object_id *head,
			  const struct object_id *remote,
			  int overwrite_ignore)
{
	struct tree *trees[MAX_UNPACK_TREES];
	struct unpack_trees_options opts;
	struct tree_desc t[MAX_UNPACK_TREES];
	int i, nr_trees = 0;
	struct dir_struct dir;
	struct lock_file lock_file = LOCK_INIT;

	refresh_cache(REFRESH_QUIET);

	if (hold_locked_index(&lock_file, LOCK_REPORT_ON_ERROR) < 0)
		return -1;

	memset(&trees, 0, sizeof(trees));
	memset(&t, 0, sizeof(t));

	trees[nr_trees] = parse_tree_indirect(head);
	if (!trees[nr_trees++]) {
		rollback_lock_file(&lock_file);
		return -1;
	}
	trees[nr_trees] = parse_tree_indirect(remote);
	if (!trees[nr_trees++]) {
		rollback_lock_file(&lock_file);
		return -1;
	}
	for (i = 0; i < nr_trees; i++) {
		parse_tree(trees[i]);
		init_tree_desc(t+i, trees[i]->buffer, trees[i]->size);
	}

	memset(&opts, 0, sizeof(opts));
	if (overwrite_ignore) {
		memset(&dir, 0, sizeof(dir));
		dir.flags |= DIR_SHOW_IGNORED;
		setup_standard_excludes(&dir);
		opts.dir = &dir;
	}

	opts.head_idx = 1;
	opts.src_index = &the_index;
	opts.dst_index = &the_index;
	opts.update = 1;
	opts.verbose_update = 1;
	opts.merge = 1;
	opts.fn = twoway_merge;
	setup_unpack_trees_porcelain(&opts, "merge");

	if (unpack_trees(nr_trees, t, &opts)) {
		rollback_lock_file(&lock_file);
		clear_unpack_trees_porcelain(&opts);
		return -1;
	}
	clear_unpack_trees_porcelain(&opts);

	if (write_locked_index(&the_index, &lock_file, COMMIT_LOCK))
		return error(_("unable to write new index file"));
	return 0;
}
Exemple #23
0
static int do_push_stash(struct pathspec ps, const char *stash_msg, int quiet,
			 int keep_index, int patch_mode, int include_untracked)
{
	int ret = 0;
	struct stash_info info;
	struct strbuf patch = STRBUF_INIT;
	struct strbuf stash_msg_buf = STRBUF_INIT;
	struct strbuf untracked_files = STRBUF_INIT;

	if (patch_mode && keep_index == -1)
		keep_index = 1;

	if (patch_mode && include_untracked) {
		fprintf_ln(stderr, _("Can't use --patch and --include-untracked"
				     " or --all at the same time"));
		ret = -1;
		goto done;
	}

	read_cache_preload(NULL);
	if (!include_untracked && ps.nr) {
		int i;
		char *ps_matched = xcalloc(ps.nr, 1);

		for (i = 0; i < active_nr; i++)
			ce_path_match(&the_index, active_cache[i], &ps,
				      ps_matched);

		if (report_path_error(ps_matched, &ps, NULL)) {
			fprintf_ln(stderr, _("Did you forget to 'git add'?"));
			ret = -1;
			free(ps_matched);
			goto done;
		}
		free(ps_matched);
	}

	if (refresh_cache(REFRESH_QUIET)) {
		ret = -1;
		goto done;
	}

	if (!check_changes(ps, include_untracked, &untracked_files)) {
		if (!quiet)
			printf_ln(_("No local changes to save"));
		goto done;
	}

	if (!reflog_exists(ref_stash) && do_clear_stash()) {
		ret = -1;
		if (!quiet)
			fprintf_ln(stderr, _("Cannot initialize stash"));
		goto done;
	}

	if (stash_msg)
		strbuf_addstr(&stash_msg_buf, stash_msg);
	if (do_create_stash(ps, &stash_msg_buf, include_untracked, patch_mode,
			    &info, &patch, quiet)) {
		ret = -1;
		goto done;
	}

	if (do_store_stash(&info.w_commit, stash_msg_buf.buf, 1)) {
		ret = -1;
		if (!quiet)
			fprintf_ln(stderr, _("Cannot save the current status"));
		goto done;
	}

	if (!quiet)
		printf_ln(_("Saved working directory and index state %s"),
			  stash_msg_buf.buf);

	if (!patch_mode) {
		if (include_untracked && !ps.nr) {
			struct child_process cp = CHILD_PROCESS_INIT;

			cp.git_cmd = 1;
			argv_array_pushl(&cp.args, "clean", "--force",
					 "--quiet", "-d", NULL);
			if (include_untracked == INCLUDE_ALL_FILES)
				argv_array_push(&cp.args, "-x");
			if (run_command(&cp)) {
				ret = -1;
				goto done;
			}
		}
		discard_cache();
		if (ps.nr) {
			struct child_process cp_add = CHILD_PROCESS_INIT;
			struct child_process cp_diff = CHILD_PROCESS_INIT;
			struct child_process cp_apply = CHILD_PROCESS_INIT;
			struct strbuf out = STRBUF_INIT;

			cp_add.git_cmd = 1;
			argv_array_push(&cp_add.args, "add");
			if (!include_untracked)
				argv_array_push(&cp_add.args, "-u");
			if (include_untracked == INCLUDE_ALL_FILES)
				argv_array_push(&cp_add.args, "--force");
			argv_array_push(&cp_add.args, "--");
			add_pathspecs(&cp_add.args, ps);
			if (run_command(&cp_add)) {
				ret = -1;
				goto done;
			}

			cp_diff.git_cmd = 1;
			argv_array_pushl(&cp_diff.args, "diff-index", "-p",
					 "--cached", "--binary", "HEAD", "--",
					 NULL);
			add_pathspecs(&cp_diff.args, ps);
			if (pipe_command(&cp_diff, NULL, 0, &out, 0, NULL, 0)) {
				ret = -1;
				goto done;
			}

			cp_apply.git_cmd = 1;
			argv_array_pushl(&cp_apply.args, "apply", "--index",
					 "-R", NULL);
			if (pipe_command(&cp_apply, out.buf, out.len, NULL, 0,
					 NULL, 0)) {
				ret = -1;
				goto done;
			}
		} else {
			struct child_process cp = CHILD_PROCESS_INIT;
			cp.git_cmd = 1;
			argv_array_pushl(&cp.args, "reset", "--hard", "-q",
					 NULL);
			if (run_command(&cp)) {
				ret = -1;
				goto done;
			}
		}

		if (keep_index == 1 && !is_null_oid(&info.i_tree)) {
			struct child_process cp_ls = CHILD_PROCESS_INIT;
			struct child_process cp_checkout = CHILD_PROCESS_INIT;
			struct strbuf out = STRBUF_INIT;

			if (reset_tree(&info.i_tree, 0, 1)) {
				ret = -1;
				goto done;
			}

			cp_ls.git_cmd = 1;
			argv_array_pushl(&cp_ls.args, "ls-files", "-z",
					 "--modified", "--", NULL);

			add_pathspecs(&cp_ls.args, ps);
			if (pipe_command(&cp_ls, NULL, 0, &out, 0, NULL, 0)) {
				ret = -1;
				goto done;
			}

			cp_checkout.git_cmd = 1;
			argv_array_pushl(&cp_checkout.args, "checkout-index",
					 "-z", "--force", "--stdin", NULL);
			if (pipe_command(&cp_checkout, out.buf, out.len, NULL,
					 0, NULL, 0)) {
				ret = -1;
				goto done;
			}
		}
		goto done;
	} else {
		struct child_process cp = CHILD_PROCESS_INIT;

		cp.git_cmd = 1;
		argv_array_pushl(&cp.args, "apply", "-R", NULL);

		if (pipe_command(&cp, patch.buf, patch.len, NULL, 0, NULL, 0)) {
			if (!quiet)
				fprintf_ln(stderr, _("Cannot remove "
						     "worktree changes"));
			ret = -1;
			goto done;
		}

		if (keep_index < 1) {
			struct child_process cp = CHILD_PROCESS_INIT;

			discard_cache();

			cp.git_cmd = 1;
			argv_array_pushl(&cp.args, "reset", "-q", "--", NULL);
			add_pathspecs(&cp.args, ps);
			if (run_command(&cp)) {
				ret = -1;
				goto done;
			}
		}
		goto done;
	}

done:
	strbuf_release(&stash_msg_buf);
	return ret;
}
Exemple #24
0
static int try_merge_strategy(const char *strategy, struct commit_list *common,
			      const char *head_arg)
{
	const char **args;
	int i = 0, ret;
	struct commit_list *j;
	struct strbuf buf = STRBUF_INIT;
	int index_fd;
	struct lock_file *lock = xcalloc(1, sizeof(struct lock_file));

	index_fd = hold_locked_index(lock, 1);
	refresh_cache(REFRESH_QUIET);
	if (active_cache_changed &&
			(write_cache(index_fd, active_cache, active_nr) ||
			 commit_locked_index(lock)))
		return error("Unable to write index.");
	rollback_lock_file(lock);

	if (!strcmp(strategy, "recursive") || !strcmp(strategy, "subtree")) {
		int clean;
		struct commit *result;
		struct lock_file *lock = xcalloc(1, sizeof(struct lock_file));
		int index_fd;
		struct commit_list *reversed = NULL;
		struct merge_options o;

		if (remoteheads->next) {
			error("Not handling anything other than two heads merge.");
			return 2;
		}

		init_merge_options(&o);
		if (!strcmp(strategy, "subtree"))
			o.subtree_merge = 1;

		o.branch1 = head_arg;
		o.branch2 = remoteheads->item->util;

		for (j = common; j; j = j->next)
			commit_list_insert(j->item, &reversed);

		index_fd = hold_locked_index(lock, 1);
		clean = merge_recursive(&o, lookup_commit(head),
				remoteheads->item, reversed, &result);
		if (active_cache_changed &&
				(write_cache(index_fd, active_cache, active_nr) ||
				 commit_locked_index(lock)))
			die ("unable to write %s", get_index_file());
		rollback_lock_file(lock);
		return clean ? 0 : 1;
	} else {
		args = xmalloc((4 + commit_list_count(common) +
					commit_list_count(remoteheads)) * sizeof(char *));
		strbuf_addf(&buf, "merge-%s", strategy);
		args[i++] = buf.buf;
		for (j = common; j; j = j->next)
			args[i++] = xstrdup(sha1_to_hex(j->item->object.sha1));
		args[i++] = "--";
		args[i++] = head_arg;
		for (j = remoteheads; j; j = j->next)
			args[i++] = xstrdup(sha1_to_hex(j->item->object.sha1));
		args[i] = NULL;
		ret = run_command_v_opt(args, RUN_GIT_CMD);
		strbuf_release(&buf);
		i = 1;
		for (j = common; j; j = j->next)
			free((void *)args[i++]);
		i += 2;
		for (j = remoteheads; j; j = j->next)
			free((void *)args[i++]);
		free(args);
		discard_cache();
		if (read_cache() < 0)
			die("failed to read the cache");
		return ret;
	}
}
Exemple #25
0
static int do_create_stash(struct pathspec ps, struct strbuf *stash_msg_buf,
			   int include_untracked, int patch_mode,
			   struct stash_info *info, struct strbuf *patch,
			   int quiet)
{
	int ret = 0;
	int flags = 0;
	int untracked_commit_option = 0;
	const char *head_short_sha1 = NULL;
	const char *branch_ref = NULL;
	const char *branch_name = "(no branch)";
	struct commit *head_commit = NULL;
	struct commit_list *parents = NULL;
	struct strbuf msg = STRBUF_INIT;
	struct strbuf commit_tree_label = STRBUF_INIT;
	struct strbuf untracked_files = STRBUF_INIT;

	prepare_fallback_ident("git stash", "[email protected]");

	read_cache_preload(NULL);
	refresh_cache(REFRESH_QUIET);

	if (get_oid("HEAD", &info->b_commit)) {
		if (!quiet)
			fprintf_ln(stderr, _("You do not have "
					     "the initial commit yet"));
		ret = -1;
		goto done;
	} else {
		head_commit = lookup_commit(the_repository, &info->b_commit);
	}

	if (!check_changes(ps, include_untracked, &untracked_files)) {
		ret = 1;
		goto done;
	}

	branch_ref = resolve_ref_unsafe("HEAD", 0, NULL, &flags);
	if (flags & REF_ISSYMREF)
		branch_name = strrchr(branch_ref, '/') + 1;
	head_short_sha1 = find_unique_abbrev(&head_commit->object.oid,
					     DEFAULT_ABBREV);
	strbuf_addf(&msg, "%s: %s ", branch_name, head_short_sha1);
	pp_commit_easy(CMIT_FMT_ONELINE, head_commit, &msg);

	strbuf_addf(&commit_tree_label, "index on %s\n", msg.buf);
	commit_list_insert(head_commit, &parents);
	if (write_cache_as_tree(&info->i_tree, 0, NULL) ||
	    commit_tree(commit_tree_label.buf, commit_tree_label.len,
			&info->i_tree, parents, &info->i_commit, NULL, NULL)) {
		if (!quiet)
			fprintf_ln(stderr, _("Cannot save the current "
					     "index state"));
		ret = -1;
		goto done;
	}

	if (include_untracked) {
		if (save_untracked_files(info, &msg, untracked_files)) {
			if (!quiet)
				fprintf_ln(stderr, _("Cannot save "
						     "the untracked files"));
			ret = -1;
			goto done;
		}
		untracked_commit_option = 1;
	}
	if (patch_mode) {
		ret = stash_patch(info, ps, patch, quiet);
		if (ret < 0) {
			if (!quiet)
				fprintf_ln(stderr, _("Cannot save the current "
						     "worktree state"));
			goto done;
		} else if (ret > 0) {
			goto done;
		}
	} else {
		if (stash_working_tree(info, ps)) {
			if (!quiet)
				fprintf_ln(stderr, _("Cannot save the current "
						     "worktree state"));
			ret = -1;
			goto done;
		}
	}

	if (!stash_msg_buf->len)
		strbuf_addf(stash_msg_buf, "WIP on %s", msg.buf);
	else
		strbuf_insertf(stash_msg_buf, 0, "On %s: ", branch_name);

	/*
	 * `parents` will be empty after calling `commit_tree()`, so there is
	 * no need to call `free_commit_list()`
	 */
	parents = NULL;
	if (untracked_commit_option)
		commit_list_insert(lookup_commit(the_repository,
						 &info->u_commit),
				   &parents);
	commit_list_insert(lookup_commit(the_repository, &info->i_commit),
			   &parents);
	commit_list_insert(head_commit, &parents);

	if (commit_tree(stash_msg_buf->buf, stash_msg_buf->len, &info->w_tree,
			parents, &info->w_commit, NULL, NULL)) {
		if (!quiet)
			fprintf_ln(stderr, _("Cannot record "
					     "working tree state"));
		ret = -1;
		goto done;
	}

done:
	strbuf_release(&commit_tree_label);
	strbuf_release(&msg);
	strbuf_release(&untracked_files);
	return ret;
}
Exemple #26
0
Fichier : add.c Projet : 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;
}
Exemple #27
0
int cmd_rm(int argc, const char **argv, const char *prefix)
{
	int i, newfd;
	const char **pathspec;
	char *seen;

	git_config(git_default_config, NULL);

	argc = parse_options(argc, argv, prefix, builtin_rm_options,
			     builtin_rm_usage, 0);
	if (!argc)
		usage_with_options(builtin_rm_usage, builtin_rm_options);

	if (!index_only)
		setup_work_tree();

	newfd = hold_locked_index(&lock_file, 1);

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

	pathspec = get_pathspec(prefix, argv);
	seen = NULL;
	for (i = 0; pathspec[i] ; i++)
		/* nothing */;
	seen = xcalloc(i, 1);

	for (i = 0; i < active_nr; i++) {
		struct cache_entry *ce = active_cache[i];
		if (!match_pathspec(pathspec, ce->name, ce_namelen(ce), 0, seen))
			continue;
		add_list(ce->name);
	}

	if (pathspec) {
		const char *match;
		int seen_any = 0;
		for (i = 0; (match = pathspec[i]) != NULL ; i++) {
			if (!seen[i]) {
				if (!ignore_unmatch) {
					die("pathspec '%s' did not match any files",
					    match);
				}
			}
			else {
				seen_any = 1;
			}
			if (!recursive && seen[i] == MATCHED_RECURSIVELY)
				die("not removing '%s' recursively without -r",
				    *match ? match : ".");
		}

		if (! seen_any)
			exit(0);
	}

	/*
	 * If not forced, the file, the index and the HEAD (if exists)
	 * must match; but the file can already been removed, since
	 * this sequence is a natural "novice" way:
	 *
	 *	rm F; git rm F
	 *
	 * Further, if HEAD commit exists, "diff-index --cached" must
	 * report no changes unless forced.
	 */
	if (!force) {
		unsigned char sha1[20];
		if (get_sha1("HEAD", sha1))
			hashclr(sha1);
		if (check_local_mod(sha1, index_only))
			exit(1);
	}

	/*
	 * First remove the names from the index: we won't commit
	 * the index unless all of them succeed.
	 */
	for (i = 0; i < list.nr; i++) {
		const char *path = list.name[i];
		if (!quiet)
			printf("rm '%s'\n", path);

		if (remove_file_from_cache(path))
			die("git rm: unable to remove %s", path);
	}

	if (show_only)
		return 0;

	/*
	 * Then, unless we used "--cached", remove the filenames from
	 * the workspace. If we fail to remove the first one, we
	 * abort the "git rm" (but once we've successfully removed
	 * any file at all, we'll go ahead and commit to it all:
	 * by then we've already committed ourselves and can't fail
	 * in the middle)
	 */
	if (!index_only) {
		int removed = 0;
		for (i = 0; i < list.nr; i++) {
			const char *path = list.name[i];
			if (!remove_path(path)) {
				removed = 1;
				continue;
			}
			if (!removed)
				die("git rm: %s: %s", path, strerror(errno));
		}
	}

	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 0;
}
Exemple #28
0
int cmd_merge(int argc, const char **argv, const char *prefix)
{
	unsigned char result_tree[20];
	struct strbuf buf = STRBUF_INIT;
	const char *head_arg;
	int flag, head_invalid = 0, i;
	int best_cnt = -1, merge_was_ok = 0, automerge_was_ok = 0;
	struct commit_list *common = NULL;
	const char *best_strategy = NULL, *wt_strategy = NULL;
	struct commit_list **remotes = &remoteheads;

	if (file_exists(git_path("MERGE_HEAD")))
		die("You have not concluded your merge. (MERGE_HEAD exists)");
	if (read_cache_unmerged())
		die("You are in the middle of a conflicted merge."
				" (index unmerged)");

	/*
	 * Check if we are _not_ on a detached HEAD, i.e. if there is a
	 * current branch.
	 */
	branch = resolve_ref("HEAD", head, 0, &flag);
	if (branch && !prefixcmp(branch, "refs/heads/"))
		branch += 11;
	if (is_null_sha1(head))
		head_invalid = 1;

	git_config(git_merge_config, NULL);

	/* for color.ui */
	if (diff_use_color_default == -1)
		diff_use_color_default = git_use_color_default;

	argc = parse_options(argc, argv, prefix, builtin_merge_options,
			builtin_merge_usage, 0);
	if (verbosity < 0)
		show_diffstat = 0;

	if (squash) {
		if (!allow_fast_forward)
			die("You cannot combine --squash with --no-ff.");
		option_commit = 0;
	}

	if (!allow_fast_forward && fast_forward_only)
		die("You cannot combine --no-ff with --ff-only.");

	if (!argc)
		usage_with_options(builtin_merge_usage,
			builtin_merge_options);

	/*
	 * This could be traditional "merge <msg> HEAD <commit>..."  and
	 * the way we can tell it is to see if the second token is HEAD,
	 * but some people might have misused the interface and used a
	 * committish that is the same as HEAD there instead.
	 * Traditional format never would have "-m" so it is an
	 * additional safety measure to check for it.
	 */

	if (!have_message && is_old_style_invocation(argc, argv)) {
		strbuf_addstr(&merge_msg, argv[0]);
		head_arg = argv[1];
		argv += 2;
		argc -= 2;
	} else if (head_invalid) {
		struct object *remote_head;
		/*
		 * If the merged head is a valid one there is no reason
		 * to forbid "git merge" into a branch yet to be born.
		 * We do the same for "git pull".
		 */
		if (argc != 1)
			die("Can merge only exactly one commit into "
				"empty head");
		if (squash)
			die("Squash commit into empty head not supported yet");
		if (!allow_fast_forward)
			die("Non-fast-forward commit does not make sense into "
			    "an empty head");
		remote_head = peel_to_type(argv[0], 0, NULL, OBJ_COMMIT);
		if (!remote_head)
			die("%s - not something we can merge", argv[0]);
		update_ref("initial pull", "HEAD", remote_head->sha1, NULL, 0,
				DIE_ON_ERR);
		reset_hard(remote_head->sha1, 0);
		return 0;
	} else {
		struct strbuf msg = STRBUF_INIT;

		/* We are invoked directly as the first-class UI. */
		head_arg = "HEAD";

		/*
		 * All the rest are the commits being merged;
		 * prepare the standard merge summary message to
		 * be appended to the given message.  If remote
		 * is invalid we will die later in the common
		 * codepath so we discard the error in this
		 * loop.
		 */
		if (!have_message) {
			for (i = 0; i < argc; i++)
				merge_name(argv[i], &msg);
			fmt_merge_msg(option_log, &msg, &merge_msg);
			if (merge_msg.len)
				strbuf_setlen(&merge_msg, merge_msg.len-1);
		}
	}

	if (head_invalid || !argc)
		usage_with_options(builtin_merge_usage,
			builtin_merge_options);

	strbuf_addstr(&buf, "merge");
	for (i = 0; i < argc; i++)
		strbuf_addf(&buf, " %s", argv[i]);
	setenv("GIT_REFLOG_ACTION", buf.buf, 0);
	strbuf_reset(&buf);

	for (i = 0; i < argc; i++) {
		struct object *o;
		struct commit *commit;

		o = peel_to_type(argv[i], 0, NULL, OBJ_COMMIT);
		if (!o)
			die("%s - not something we can merge", argv[i]);
		commit = lookup_commit(o->sha1);
		commit->util = (void *)argv[i];
		remotes = &commit_list_insert(commit, remotes)->next;

		strbuf_addf(&buf, "GITHEAD_%s", sha1_to_hex(o->sha1));
		setenv(buf.buf, argv[i], 1);
		strbuf_reset(&buf);
	}

	if (!use_strategies) {
		if (!remoteheads->next)
			add_strategies(pull_twohead, DEFAULT_TWOHEAD);
		else
			add_strategies(pull_octopus, DEFAULT_OCTOPUS);
	}

	for (i = 0; i < use_strategies_nr; i++) {
		if (use_strategies[i]->attr & NO_FAST_FORWARD)
			allow_fast_forward = 0;
		if (use_strategies[i]->attr & NO_TRIVIAL)
			allow_trivial = 0;
	}

	if (!remoteheads->next)
		common = get_merge_bases(lookup_commit(head),
				remoteheads->item, 1);
	else {
		struct commit_list *list = remoteheads;
		commit_list_insert(lookup_commit(head), &list);
		common = get_octopus_merge_bases(list);
		free(list);
	}

	update_ref("updating ORIG_HEAD", "ORIG_HEAD", head, NULL, 0,
		DIE_ON_ERR);

	if (!common)
		; /* No common ancestors found. We need a real merge. */
	else if (!remoteheads->next && !common->next &&
			common->item == remoteheads->item) {
		/*
		 * If head can reach all the merge then we are up to date.
		 * but first the most common case of merging one remote.
		 */
		finish_up_to_date("Already up-to-date.");
		return 0;
	} else if (allow_fast_forward && !remoteheads->next &&
			!common->next &&
			!hashcmp(common->item->object.sha1, head)) {
		/* Again the most common case of merging one remote. */
		struct strbuf msg = STRBUF_INIT;
		struct object *o;
		char hex[41];

		strcpy(hex, find_unique_abbrev(head, DEFAULT_ABBREV));

		if (verbosity >= 0)
			printf("Updating %s..%s\n",
				hex,
				find_unique_abbrev(remoteheads->item->object.sha1,
				DEFAULT_ABBREV));
		strbuf_addstr(&msg, "Fast-forward");
		if (have_message)
			strbuf_addstr(&msg,
				" (no commit created; -m option ignored)");
		o = peel_to_type(sha1_to_hex(remoteheads->item->object.sha1),
			0, NULL, OBJ_COMMIT);
		if (!o)
			return 1;

		if (checkout_fast_forward(head, remoteheads->item->object.sha1))
			return 1;

		finish(o->sha1, msg.buf);
		drop_save();
		return 0;
	} else if (!remoteheads->next && common->next)
		;
		/*
		 * We are not doing octopus and not fast-forward.  Need
		 * a real merge.
		 */
	else if (!remoteheads->next && !common->next && option_commit) {
		/*
		 * We are not doing octopus, not fast-forward, and have
		 * only one common.
		 */
		refresh_cache(REFRESH_QUIET);
		if (allow_trivial && !fast_forward_only) {
			/* See if it is really trivial. */
			git_committer_info(IDENT_ERROR_ON_NO_NAME);
			printf("Trying really trivial in-index merge...\n");
			if (!read_tree_trivial(common->item->object.sha1,
					head, remoteheads->item->object.sha1))
				return merge_trivial();
			printf("Nope.\n");
		}
	} else {
		/*
		 * An octopus.  If we can reach all the remote we are up
		 * to date.
		 */
		int up_to_date = 1;
		struct commit_list *j;

		for (j = remoteheads; j; j = j->next) {
			struct commit_list *common_one;

			/*
			 * Here we *have* to calculate the individual
			 * merge_bases again, otherwise "git merge HEAD^
			 * HEAD^^" would be missed.
			 */
			common_one = get_merge_bases(lookup_commit(head),
				j->item, 1);
			if (hashcmp(common_one->item->object.sha1,
				j->item->object.sha1)) {
				up_to_date = 0;
				break;
			}
		}
		if (up_to_date) {
			finish_up_to_date("Already up-to-date. Yeeah!");
			return 0;
		}
	}

	if (fast_forward_only)
		die("Not possible to fast-forward, aborting.");

	/* We are going to make a new commit. */
	git_committer_info(IDENT_ERROR_ON_NO_NAME);

	/*
	 * At this point, we need a real merge.  No matter what strategy
	 * we use, it would operate on the index, possibly affecting the
	 * working tree, and when resolved cleanly, have the desired
	 * tree in the index -- this means that the index must be in
	 * sync with the head commit.  The strategies are responsible
	 * to ensure this.
	 */
	if (use_strategies_nr != 1) {
		/*
		 * Stash away the local changes so that we can try more
		 * than one.
		 */
		save_state();
	} else {
		memcpy(stash, null_sha1, 20);
	}

	for (i = 0; i < use_strategies_nr; i++) {
		int ret;
		if (i) {
			printf("Rewinding the tree to pristine...\n");
			restore_state();
		}
		if (use_strategies_nr != 1)
			printf("Trying merge strategy %s...\n",
				use_strategies[i]->name);
		/*
		 * Remember which strategy left the state in the working
		 * tree.
		 */
		wt_strategy = use_strategies[i]->name;

		ret = try_merge_strategy(use_strategies[i]->name,
			common, head_arg);
		if (!option_commit && !ret) {
			merge_was_ok = 1;
			/*
			 * This is necessary here just to avoid writing
			 * the tree, but later we will *not* exit with
			 * status code 1 because merge_was_ok is set.
			 */
			ret = 1;
		}

		if (ret) {
			/*
			 * The backend exits with 1 when conflicts are
			 * left to be resolved, with 2 when it does not
			 * handle the given merge at all.
			 */
			if (ret == 1) {
				int cnt = evaluate_result();

				if (best_cnt <= 0 || cnt <= best_cnt) {
					best_strategy = use_strategies[i]->name;
					best_cnt = cnt;
				}
			}
			if (merge_was_ok)
				break;
			else
				continue;
		}

		/* Automerge succeeded. */
		write_tree_trivial(result_tree);
		automerge_was_ok = 1;
		break;
	}

	/*
	 * If we have a resulting tree, that means the strategy module
	 * auto resolved the merge cleanly.
	 */
	if (automerge_was_ok)
		return finish_automerge(common, result_tree, wt_strategy);

	/*
	 * Pick the result from the best strategy and have the user fix
	 * it up.
	 */
	if (!best_strategy) {
		restore_state();
		if (use_strategies_nr > 1)
			fprintf(stderr,
				"No merge strategy handled the merge.\n");
		else
			fprintf(stderr, "Merge with strategy %s failed.\n",
				use_strategies[0]->name);
		return 2;
	} else if (best_strategy == wt_strategy)
		; /* We already have its result in the working tree. */
	else {
		printf("Rewinding the tree to pristine...\n");
		restore_state();
		printf("Using the %s to prepare resolving by hand.\n",
			best_strategy);
		try_merge_strategy(best_strategy, common, head_arg);
	}

	if (squash)
		finish(NULL, NULL);
	else {
		int fd;
		struct commit_list *j;

		for (j = remoteheads; j; j = j->next)
			strbuf_addf(&buf, "%s\n",
				sha1_to_hex(j->item->object.sha1));
		fd = open(git_path("MERGE_HEAD"), O_WRONLY | O_CREAT, 0666);
		if (fd < 0)
			die_errno("Could not open '%s' for writing",
				  git_path("MERGE_HEAD"));
		if (write_in_full(fd, buf.buf, buf.len) != buf.len)
			die_errno("Could not write to '%s'", git_path("MERGE_HEAD"));
		close(fd);
		strbuf_addch(&merge_msg, '\n');
		fd = open(git_path("MERGE_MSG"), O_WRONLY | O_CREAT, 0666);
		if (fd < 0)
			die_errno("Could not open '%s' for writing",
				  git_path("MERGE_MSG"));
		if (write_in_full(fd, merge_msg.buf, merge_msg.len) !=
			merge_msg.len)
			die_errno("Could not write to '%s'", git_path("MERGE_MSG"));
		close(fd);
		fd = open(git_path("MERGE_MODE"), O_WRONLY | O_CREAT | O_TRUNC, 0666);
		if (fd < 0)
			die_errno("Could not open '%s' for writing",
				  git_path("MERGE_MODE"));
		strbuf_reset(&buf);
		if (!allow_fast_forward)
			strbuf_addf(&buf, "no-ff");
		if (write_in_full(fd, buf.buf, buf.len) != buf.len)
			die_errno("Could not write to '%s'", git_path("MERGE_MODE"));
		close(fd);
	}

	if (merge_was_ok) {
		fprintf(stderr, "Automatic merge went well; "
			"stopped before committing as requested\n");
		return 0;
	} else
		return suggest_conflicts();
}
Exemple #29
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;
}
Exemple #30
0
static int do_apply_stash(const char *prefix, struct stash_info *info,
			  int index, int quiet)
{
	int ret;
	int has_index = index;
	struct merge_options o;
	struct object_id c_tree;
	struct object_id index_tree;
	struct commit *result;
	const struct object_id *bases[1];

	read_cache_preload(NULL);
	if (refresh_cache(REFRESH_QUIET))
		return -1;

	if (write_cache_as_tree(&c_tree, 0, NULL))
		return error(_("cannot apply a stash in the middle of a merge"));

	if (index) {
		if (oideq(&info->b_tree, &info->i_tree) ||
		    oideq(&c_tree, &info->i_tree)) {
			has_index = 0;
		} else {
			struct strbuf out = STRBUF_INIT;

			if (diff_tree_binary(&out, &info->w_commit)) {
				strbuf_release(&out);
				return error(_("could not generate diff %s^!."),
					     oid_to_hex(&info->w_commit));
			}

			ret = apply_cached(&out);
			strbuf_release(&out);
			if (ret)
				return error(_("conflicts in index."
					       "Try without --index."));

			discard_cache();
			read_cache();
			if (write_cache_as_tree(&index_tree, 0, NULL))
				return error(_("could not save index tree"));

			reset_head();
		}
	}

	if (info->has_u && restore_untracked(&info->u_tree))
		return error(_("could not restore untracked files from stash"));

	init_merge_options(&o, the_repository);

	o.branch1 = "Updated upstream";
	o.branch2 = "Stashed changes";

	if (oideq(&info->b_tree, &c_tree))
		o.branch1 = "Version stash was based on";

	if (quiet)
		o.verbosity = 0;

	if (o.verbosity >= 3)
		printf_ln(_("Merging %s with %s"), o.branch1, o.branch2);

	bases[0] = &info->b_tree;

	ret = merge_recursive_generic(&o, &c_tree, &info->w_tree, 1, bases,
				      &result);
	if (ret) {
		rerere(0);

		if (index)
			fprintf_ln(stderr, _("Index was not unstashed."));

		return ret;
	}

	if (has_index) {
		if (reset_tree(&index_tree, 0, 0))
			return -1;
	} else {
		struct strbuf out = STRBUF_INIT;

		if (get_newly_staged(&out, &c_tree)) {
			strbuf_release(&out);
			return -1;
		}

		if (reset_tree(&c_tree, 0, 1)) {
			strbuf_release(&out);
			return -1;
		}

		ret = update_index(&out);
		strbuf_release(&out);
		if (ret)
			return -1;

		discard_cache();
	}

	if (quiet) {
		if (refresh_cache(REFRESH_QUIET))
			warning("could not refresh index");
	} else {
		struct child_process cp = CHILD_PROCESS_INIT;

		/*
		 * Status is quite simple and could be replaced with calls to
		 * wt_status in the future, but it adds complexities which may
		 * require more tests.
		 */
		cp.git_cmd = 1;
		cp.dir = prefix;
		argv_array_push(&cp.args, "status");
		run_command(&cp);
	}

	return 0;
}