[BLOCK] fix string handling in elv_iosched_store
authorTejun Heo <htejun@gmail.com>
Thu, 10 Nov 2005 07:55:01 +0000 (08:55 +0100)
committerJens Axboe <axboe@nelson.home.kernel.dk>
Sat, 12 Nov 2005 09:56:21 +0000 (10:56 +0100)
commitbe56123568072d223263a6a70a087d1e7faabb83
treee6044bff3c9dba3392dfe1a4b172d87081d55334
parent15853af9f07673680439b224519c692f1352b959
[BLOCK] fix string handling in elv_iosched_store

elv_iosched_store doesn't terminate string passed from userspace if
it's too long.  Also, if the written length is zero (probably not
possible), it accesses elevator_name[-1].  This patch fixes both bugs.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jens Axboe <axboe@suse.de>
block/elevator.c