mount: (new) fix MS_REC usage

 # mount -R /mnt/test /mnt/test
 mount: propagation flags (--make-* or --bind options) are mutually exclusive

Reported-by: Dave Reisner <dreisner@archlinux.org>
Signed-off-by: Karel Zak <kzak@redhat.com>

diff --git a/sys-utils/mount.c b/sys-utils/mount.c
index a4fbd9b8fcbae7bddf1c81b9d6792f0bfaa09e55..2b8843cc7e51b220ccd307ca251ba54b792a8e4a 100644 (file)
--- a/sys-utils/mount.c
+++ b/sys-utils/mount.c
@@ -902,7 +902,7 @@ int main(int argc, char **argv)
                usage(stderr);
 
        if (oper) {
-               if (!is_power_of_2(oper))
+               if (!is_power_of_2(oper & ~MS_REC))
                        errx(MOUNT_EX_USAGE, _("propagation flags (--make-* or --bind options) are mutually exclusive"));
 
                if (oper != MS_BIND && mnt_context_get_options(cxt))