fd-util: add generic resolve_xat_fdroot()

As suggested in https://github.com/systemd/systemd/pull/40500#discussion_r2740921215
2026-02-05 14:14:39 +01:00
parent 3065bc80cb
commit 539e2b75aa
3 changed files with 31 additions and 13 deletions
@@ -181,6 +181,8 @@ static inline int dir_fd_is_root_or_cwd(int dir_fd) {

 int fds_are_same_mount(int fd1, int fd2);

+int resolve_xat_fdroot(int *fd, const char **path, char **ret_buffer);
+
 /* The maximum length a buffer for a /proc/self/fd/<fd> path needs */
 #define PROC_FD_PATH_MAX \
        (STRLEN("/proc/self/fd/") + DECIMAL_STR_MAX(int))