Re: [PATCH v2] all: new command used for multi-repo operations

> +static int walk(struct strbuf *path, int argc, const char **argv)
> +{
> +	DIR *dir;
> +	struct dirent *ent;
> +	struct stat st;
> +	size_t len;
> +
> +	dir = opendir(path->buf);
> +	if (!dir)
> +		return errno;
> +	strbuf_addstr(path, "/");
> +	len = path->len;
> +	while ((ent = readdir(dir))) {
> +		if (!strcmp(ent->d_name, ".") || !strcmp(ent->d_name, ".."))
> +			continue;
> +		if (!strcmp(ent->d_name, ".git")) {
> +			strbuf_addstr(path, ent->d_name);
> +			setenv(GIT_DIR_ENVIRONMENT, path->buf, 1);
> +			strbuf_setlen(path, len - 1);
> +			setenv(GIT_WORK_TREE_ENVIRONMENT, path->buf, 1);
> +			handle_repo(path->buf, argv);
> +			strbuf_addstr(path, "/");
> +			continue;
> +		}
> +		strbuf_setlen(path, len);
> +		strbuf_addstr(path, ent->d_name);
> +		switch (DTYPE(ent)) {
> +		case DT_UNKNOWN:
> +			/* Use stat() instead of lstat(), since we want to
> +			 * know if we can follow this path into another
> +			 * directory - it's  not important if it's actually
> +			 * a symlink which gets us there.
> +			 */

> +			if (stat(path->buf, &st) || !S_ISDIR(st.st_mode))
> +				break;
> +			/* fallthrough */
> +		case DT_DIR:
> +			walk(path, argc, argv);
> +			break;
> +		}
> +		strbuf_setlen(path, len);
> +	}