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Bug #44

nullfs mount ignores readonly flag

Added by dillon almost 11 years ago. Updated about 10 years ago.

Status:
Closed
Priority:
Normal
Assignee:
-
Category:
-
Target version:
-
Start date:
Due date:
% Done:

0%


Description

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
<>

: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.

History

#1 Updated by corecode almost 11 years ago

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