diff options
| author |   brking@us.ibm.com <brking@us.ibm.com> | 2006-01-23 15:03:22 -0600 |
|---|---|---|
| committer |   James Bottomley <jejb@mulgrave.(none)> | 2006-01-26 15:13:50 -0500 |
| commit | bb1d1073a10fdc8547e3eb821ee2488260094b39 (patch) | |
| tree | 139a30834cea40e0d967506cfdaea603cf56a192 /drivers/scsi/st.c | |
| parent | [SCSI] ips soft lockup during reset/initialization (diff) | |
| download | linux-dev-bb1d1073a10fdc8547e3eb821ee2488260094b39.tar.xz linux-dev-bb1d1073a10fdc8547e3eb821ee2488260094b39.zip | |
[SCSI] Prevent scsi_execute_async from guessing cdb length
When the scsi_execute_async interface was added it ended up reducing
the flexibility of userspace to send arbitrary scsi commands through
sg using SG_IO. The SG_IO interface allows userspace to specify the
CDB length. This is now ignored in scsi_execute_async and it is
guessed using the COMMAND_SIZE macro, which is not always correct,
particularly for vendor specific commands. This patch adds a cmd_len
parameter to the scsi_execute_async interface to allow the caller
to specify the length of the CDB.
Signed-off-by: Brian King <brking@us.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Diffstat (limited to 'drivers/scsi/st.c')
| -rw-r--r-- | drivers/scsi/st.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/scsi/st.c b/drivers/scsi/st.c index 13b1d3aac265..7f96f33c1bb1 100644 --- a/drivers/scsi/st.c +++ b/drivers/scsi/st.c @@ -508,7 +508,7 @@ st_do_scsi(struct st_request * SRpnt, struct scsi_tape * STp, unsigned char *cmd STp->buffer->cmdstat.have_sense = 0; STp->buffer->syscall_result = 0; - if (scsi_execute_async(STp->device, cmd, direction, + if (scsi_execute_async(STp->device, cmd, COMMAND_SIZE(cmd[0]), direction, &((STp->buffer)->sg[0]), bytes, (STp->buffer)->sg_segs, timeout, retries, SRpnt, st_sleep_done, GFP_KERNEL)) { /* could not allocate the buffer or request was too large */ |