nullfs mount ignores readonly flag

[David Beck]

Would that fix mean that the no-setuid, no-exec and other flags will 
work as well?

Regards, David.

Matthew Dillon wrote:

   I expect there will be things that need working on.  That's one of
   them.  Hmm.  We will probably have to hold the namecache entry for
   normal files and use the namecache's mount point to check for the
   read-only filesystem status.  No biggy (we already do this for 
   directories to maintain the CD path), but it may take a few days to
   fix.

					-Matt
					Matthew Dillon 
					<dillon at xxxxxxxxxxxxx>

:Hello,
:
:A few experiments on 1.5 nullfs showed that it ignores the read-only flag:
:
:/mnt: mkdir 1 2
:/mnt: mount_null -o ro /mnt/1 /mnt/2
:/mnt: mount
:..
:/mnt/1 on /mnt/2 (null, local, read-only)
:/mnt: cd /mnt/1
:/mnt/1: echo > k
:/mnt/1: cd /mnt/2
:/mnt/2: rm k
:/mnt/2: ls
:/mnt/2: cd /mnt/1
:/mnt/1: ls -ltr
:total 0
:/mnt/1:
:
:
:I could delete a file on a read-only filesystem. Oops.
:
:Regards, David.