virtiofsd: Show submounts

Currently, setup_mounts() bind-mounts the shared directory without
MS_REC.  This makes all submounts disappear.

Pass MS_REC so that the guest can see submounts again.

Fixes: 5baa3b8e95064c2434bd9e2f312edd5e9ae275dc
Signed-off-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20200424133516.73077-1-mreitz@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
  Changed Fixes to point to the commit with the problem rather than
          the commit that turned it on

diff --git a/tools/virtiofsd/passthrough_ll.c b/tools/virtiofsd/passthrough_ll.c
index d7a6474b6ee80eed9514f20b53bfba7b8f8e37e1..787369216854406ea6d0257c429415a1b6c19a0e 100644 (file)
--- a/tools/virtiofsd/passthrough_ll.c
+++ b/tools/virtiofsd/passthrough_ll.c
@@ -2666,7 +2666,7 @@ static void setup_mounts(const char *source)
     int oldroot;
     int newroot;
 
-    if (mount(source, source, NULL, MS_BIND, NULL) < 0) {
+    if (mount(source, source, NULL, MS_BIND | MS_REC, NULL) < 0) {
         fuse_log(FUSE_LOG_ERR, "mount(%s, %s, MS_BIND): %m\n", source, source);
         exit(1);
     }