fileio: add shortcut for xopendirat() when called in opendir() compatible mode

diff --git a/src/basic/fileio.c b/src/basic/fileio.c
index cced1dd564b26bf02e28bf4097f5c0fdf6b96540..0a483854f2a4ab62dd7e20002314922f2eb74a75 100644 (file)
--- a/src/basic/fileio.c
+++ b/src/basic/fileio.c
@@ -928,6 +928,9 @@ DIR *xopendirat(int fd, const char *name, int flags) {
 
         assert(!(flags & O_CREAT));
 
+        if (fd == AT_FDCWD && flags == 0)
+                return opendir(name);
+
         nfd = openat(fd, name, O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC|flags, 0);
         if (nfd < 0)
                 return NULL;