Hi,

Lucas Nussbaum <lucas.nussbaum@inria.fr> skribis:

>>From strace:
> mount("/tmp/t", "/tmp/m", 0x55e75bf38cb0, MS_RDONLY|MS_NOSUID|MS_REMOUNT|MS_BIND, NULL) = 0
>
> MS_NOSUID is missing from mountflags in your invocation. Apparently data
> can be NULL.

Ooooh, got it.  It’s another instance of the mount flag vs. option
confusion (/proc/mounts & co. lump flags and options together in one
string).

The attached patch solves that.  I’ll polish it and push soon.

Thank you!

Ludo’.