lkml.org 
[lkml]   [2001]   [Nov]   [20]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: Swap
From
Date
>>>>> " " == Dan Maas <dmaas@dcine.com> writes:

> But NFS still allows atomic rename() right? Isn't it considered
> essential to write the new executable or library under a
> different name, and then atomically rename() over the old one?
> If you write() directly into the executable, you will get what
> you deserve...

Atomic rename works fine, on NFS, so if you just rename the old
library, you're quite safe. The bugs start to surface if you:

a) Reuse the the old library's inode by doing something along the
lines of open("lib.so",O_TRUNC|O_WRONLY).
or
b) erase the old library.

Cheers,
Trond
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 13:13    [W:0.046 / U:0.816 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site