kern/60313: data destruction: lseek() misalignment silently ignored by some block devices

[Alexander Leidinger]

Synopsis: data destruction: lseek() misalignment silently ignored by some block devices

State-Changed-From-To: open->closed
State-Changed-By: netchild
State-Changed-When: Sun Jan 8 16:39:04 UTC 2006
State-Changed-Why: 
5.x and 6.x come with GEOM, where -- according to phk -- this is
handled correctly.

>From phk:
---snip---
Notice however that lseek(2) does not in fact instigate any I/O
request so it cannot possibly know if the address is properly aligned
or not.  Therefore lseek(2) will always succeed, even if the subsequent
read/write will fail at that offset.
---snip---

http://www.freebsd.org/cgi/query-pr.cgi?pr=60313