aboutsummaryrefslogtreecommitdiffstats
path: root/block
diff options
context:
space:
mode:
authorFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>2007-07-16 08:52:16 +0200
committerJens Axboe <jens.axboe@oracle.com>2007-07-16 08:52:47 +0200
commit15d10b611fa94b52f004a08a1d4cf7b39de3cba3 (patch)
tree39b1e114689b71d37677e9733428b355d52d4e44 /block
parent2c9ecdf40af0554ee9a2b1cbbbbdbc77f90a40e1 (diff)
downloadmrst-s0i3-test-15d10b611fa94b52f004a08a1d4cf7b39de3cba3.tar.gz
mrst-s0i3-test-15d10b611fa94b52f004a08a1d4cf7b39de3cba3.tar.xz
mrst-s0i3-test-15d10b611fa94b52f004a08a1d4cf7b39de3cba3.zip
bsg: add SCSI transport-level request support
This enables bsg to handle SCSI transport-level request like SAS management protocol (SMP). - add BSG_SUB_PROTOCOL_{SCSI_CMD, SCSI_TMF, SCSI_TRANSPORT} definitions. - SCSI transport-level requests skip blk_verify_command(). Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'block')
-rw-r--r--block/bsg.c27
1 files changed, 21 insertions, 6 deletions
diff --git a/block/bsg.c b/block/bsg.c
index 13ecc951a4c..461c9f56f3e 100644
--- a/block/bsg.c
+++ b/block/bsg.c
@@ -208,7 +208,11 @@ static int blk_fill_sgv4_hdr_rq(request_queue_t *q, struct request *rq,
if (copy_from_user(rq->cmd, (void *)(unsigned long)hdr->request,
hdr->request_len))
return -EFAULT;
- if (blk_verify_command(rq->cmd, has_write_perm))
+
+ if (hdr->subprotocol == BSG_SUB_PROTOCOL_SCSI_CMD) {
+ if (blk_verify_command(rq->cmd, has_write_perm))
+ return -EPERM;
+ } else if (!capable(CAP_SYS_RAWIO))
return -EPERM;
/*
@@ -232,6 +236,8 @@ static int blk_fill_sgv4_hdr_rq(request_queue_t *q, struct request *rq,
static int
bsg_validate_sgv4_hdr(request_queue_t *q, struct sg_io_v4 *hdr, int *rw)
{
+ int ret = 0;
+
if (hdr->guard != 'Q')
return -EINVAL;
if (hdr->request_len > BLK_MAX_CDB)
@@ -240,13 +246,22 @@ bsg_validate_sgv4_hdr(request_queue_t *q, struct sg_io_v4 *hdr, int *rw)
hdr->din_xfer_len > (q->max_sectors << 9))
return -EIO;
- /* not supported currently */
- if (hdr->protocol || hdr->subprotocol)
- return -EINVAL;
+ switch (hdr->protocol) {
+ case BSG_PROTOCOL_SCSI:
+ switch (hdr->subprotocol) {
+ case BSG_SUB_PROTOCOL_SCSI_CMD:
+ case BSG_SUB_PROTOCOL_SCSI_TRANSPORT:
+ break;
+ default:
+ ret = -EINVAL;
+ }
+ break;
+ default:
+ ret = -EINVAL;
+ }
*rw = hdr->dout_xfer_len ? WRITE : READ;
-
- return 0;
+ return ret;
}
/*