client: handle fcntl error on bad fd in wl_display_connect

This makes wl_display_connect fail immediately instead of
succeeding when the integer provided by WAYLAND_SOCKET does
not refer to a valid file descriptor.

Signed-off-by: Manuel Stoeckl <code@mstoeckl.com>

diff --git a/src/wayland-client.c b/src/wayland-client.c
index 63ce0d0..66f60e3 100644 (file)
--- a/src/wayland-client.c
+++ b/src/wayland-client.c
@@ -1246,7 +1246,9 @@ wl_display_connect(const char *name)
                errno = prev_errno;
 
                flags = fcntl(fd, F_GETFD);
-               if (flags != -1)
+               if (flags == -1 && errno == EBADF)
+                       return NULL;
+               else if (flags != -1)
                        fcntl(fd, F_SETFD, flags | FD_CLOEXEC);
                unsetenv("WAYLAND_SOCKET");
        } else {