fuse_clone_chan: avoid additional FD_CLOEXEC setting if O_CLOEXEC defined (#852)

Since open(2) has been called with O_CLOEXEC flag if defined.

Signed-off-by: Xiaoguang Wang <lege.wang@jaguarmicro.com>
Co-authored-by: Xiaoguang Wang <lege.wang@jaguarmicro.com>

diff --git a/lib/fuse_loop_mt.c b/lib/fuse_loop_mt.c
index 0200d73397d0b642c3b7a1aba89c775eea5420d2..1d8b7b383ffbc282bc96a05811ed28e0e79b1e5a 100644 (file)
--- a/lib/fuse_loop_mt.c
+++ b/lib/fuse_loop_mt.c
@@ -259,7 +259,9 @@ static struct fuse_chan *fuse_clone_chan(struct fuse_mt *mt)
                        strerror(errno));
                return NULL;
        }
+#ifndef O_CLOEXEC
        fcntl(clonefd, F_SETFD, FD_CLOEXEC);
+#endif
 
        masterfd = mt->se->fd;
        res = ioctl(clonefd, FUSE_DEV_IOC_CLONE, &masterfd);