int parse_boolean(const char *v);
int parse_usec(const char *t, usec_t *usec);
int parse_pid(const char *s, pid_t* ret_pid);
+int parse_uid(const char *s, uid_t* ret_uid);
+#define parse_gid(s, ret_uid) parse_uid(s, ret_uid)
int safe_atou(const char *s, unsigned *ret_u);
int safe_atoi(const char *s, int *ret_i);
int socket_from_display(const char *display, char **path);
int get_user_creds(const char **username, uid_t *uid, gid_t *gid, const char **home);
+int get_group_creds(const char **groupname, gid_t *gid);
int glob_exists(const char *path);
int dirent_ensure_type(DIR *d, struct dirent *de);
int in_search_path(const char *path, char **search);
+int get_files_in_directory(const char *path, char ***list);
#define NULSTR_FOREACH(i, l) \
for ((i) = (l); (i) && *(i); (i) = strchr((i), 0)+1)