Bugtraq mailing list archives
Re: mean vfs bug in *bsd
From: green () FELDMAN DYN ML ORG (Brian Feldman)
Date: Sun, 31 May 1998 00:44:50 -0400
As we upgraded to freeBSD 2.2.6-STABLE the following bug came to my
attention:
when linking a device like /dev/null to a file on a NFS mounted fs the machien freeses.
A hard link links via a true link, as follows: a symlink is just a specially marked file with the path and name of another file which it refers to. A _hard_ link creates a new fs entry and sets its data inode number to point to that of the other file, in which case it becomes the file. In this way a hard link does NOT traverse different file systems/mount points whatsoever. I'm pretty certain your /dev is locally mounted, not by NFS, therefore I tend to believe that you shouldn't even be attempting a hard link. If in actuality, this does occur linking two files, one a device, both on the same NFS filesystem, then this is significant, otherwise it just means that ln(1) needs to have some better error-checking so it doesn't make hard links span drives. -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= my->name = "Brian Feldman"; my->email[0] = "brianfeldman () hotmail com"; my->email[1] = "green () feldman dyn ml org"; -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
Current thread:
- Re: mean vfs bug in *bsd Brian Feldman (May 30)
- <Possible follow-ups>
- Re: mean vfs bug in *bsd matthew green (May 31)