diff options
| author | Kees Cook <keescook@chromium.org> | 2017-02-13 16:25:26 -0800 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2017-02-14 08:29:56 -0700 |
| commit | 853fe1bf7554155376bb3b231112cdff9ff79177 (patch) | |
| tree | 7d8b38a77574919d078443cecffcae9dd380a692 /drivers/scsi/sr.c | |
| parent | d1a987f35ebf859a771ac530e95a89933b6fcce8 (diff) | |
cdrom: Make device operations read-only
Since function tables are a common target for attackers, it's best to keep
them in read-only memory. As such, this makes the CDROM device ops tables
const. This drops additionally n_minors, since it isn't used meaningfully,
and sets the only user of cdrom_dummy_generic_packet explicitly so the
variables can all be const.
Inspired by similar changes in grsecurity/PaX.
Signed-off-by: Kees Cook <keescook@chromium.org>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'drivers/scsi/sr.c')
| -rw-r--r-- | drivers/scsi/sr.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/scsi/sr.c b/drivers/scsi/sr.c index 94352e4df831..013bfe049a48 100644 --- a/drivers/scsi/sr.c +++ b/drivers/scsi/sr.c @@ -117,7 +117,7 @@ static unsigned int sr_check_events(struct cdrom_device_info *cdi, unsigned int clearing, int slot); static int sr_packet(struct cdrom_device_info *, struct packet_command *); -static struct cdrom_device_ops sr_dops = { +static const struct cdrom_device_ops sr_dops = { .open = sr_open, .release = sr_release, .drive_status = sr_drive_status, |