In a recent commit I've introduced an umount() call. But the function where the call lives is compiled on all OSes, not just Linux. But umount() is Linux specific. Other OSes have unmount (FreeBSD), or maybe something else. But since namespaces are Linux specific, we can wrap the call in #ifdef __linux__ and not care about other OSes. Signed-off-by: Michal Privoznik <mprivozn(a)redhat.com&gt; --- src/qemu/qemu_namespace.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/src/qemu/qemu_namespace.c b/src/qemu/qemu_namespace.c index fc348c043e..5769a4dfe0 100644 --- a/src/qemu/qemu_namespace.c +++ b/src/qemu/qemu_namespace.c @@ -776,10 +776,12 @@ qemuDomainUnshareNamespace(virQEMUDriverConfig *cfg, goto cleanup; } +#if defined(__linux__) if (umount("/dev") < 0) { virReportSystemError(errno, "%s", _("failed to umount devfs on /dev")); return -1; } +#endif /* !defined(__linux__) */ if (virFileMoveMount(devPath, "/dev") < 0) goto cleanup; -- 2.38.2