diff options
Diffstat (limited to 'block/bsg.c')
| -rw-r--r-- | block/bsg.c | 47 |
1 files changed, 21 insertions, 26 deletions
diff --git a/block/bsg.c b/block/bsg.c index a57046de2f07..e34c3320956c 100644 --- a/block/bsg.c +++ b/block/bsg.c @@ -85,7 +85,6 @@ struct bsg_command { struct bio *bidi_bio; int err; struct sg_io_v4 hdr; - char sense[SCSI_SENSE_BUFFERSIZE]; }; static void bsg_free_command(struct bsg_command *bc) @@ -140,18 +139,20 @@ static int blk_fill_sgv4_hdr_rq(struct request_queue *q, struct request *rq, struct sg_io_v4 *hdr, struct bsg_device *bd, fmode_t has_write_perm) { + struct scsi_request *req = scsi_req(rq); + if (hdr->request_len > BLK_MAX_CDB) { - rq->cmd = kzalloc(hdr->request_len, GFP_KERNEL); - if (!rq->cmd) + req->cmd = kzalloc(hdr->request_len, GFP_KERNEL); + if (!req->cmd) return -ENOMEM; } - if (copy_from_user(rq->cmd, (void __user *)(unsigned long)hdr->request, + if (copy_from_user(req->cmd, (void __user *)(unsigned long)hdr->request, hdr->request_len)) return -EFAULT; if (hdr->subprotocol == BSG_SUB_PROTOCOL_SCSI_CMD) { - if (blk_verify_command(rq->cmd, has_write_perm)) + if (blk_verify_command(req->cmd, has_write_perm)) return -EPERM; } else if (!capable(CAP_SYS_RAWIO)) return -EPERM; @@ -159,7 +160,7 @@ static int blk_fill_sgv4_hdr_rq(struct request_queue *q, struct request *rq, /* * fill in request structure */ - rq->cmd_len = hdr->request_len; + req->cmd_len = hdr->request_len; rq->timeout = msecs_to_jiffies(hdr->timeout); if (!rq->timeout) @@ -205,8 +206,7 @@ bsg_validate_sgv4_hdr(struct sg_io_v4 *hdr, int *rw) * map sg_io_v4 to a request. */ static struct request * -bsg_map_hdr(struct bsg_device *bd, struct sg_io_v4 *hdr, fmode_t has_write_perm, - u8 *sense) +bsg_map_hdr(struct bsg_device *bd, struct sg_io_v4 *hdr, fmode_t has_write_perm) { struct request_queue *q = bd->queue; struct request *rq, *next_rq = NULL; @@ -236,7 +236,7 @@ bsg_map_hdr(struct bsg_device *bd, struct sg_io_v4 *hdr, fmode_t has_write_perm, rq = blk_get_request(q, rw, GFP_KERNEL); if (IS_ERR(rq)) return rq; - blk_rq_set_block_pc(rq); + scsi_req_init(rq); ret = blk_fill_sgv4_hdr_rq(q, rq, hdr, bd, has_write_perm); if (ret) @@ -280,13 +280,9 @@ bsg_map_hdr(struct bsg_device *bd, struct sg_io_v4 *hdr, fmode_t has_write_perm, goto out; } - rq->sense = sense; - rq->sense_len = 0; - return rq; out: - if (rq->cmd != rq->__cmd) - kfree(rq->cmd); + scsi_req_free_cmd(scsi_req(rq)); blk_put_request(rq); if (next_rq) { blk_rq_unmap_user(next_rq->bio); @@ -393,6 +389,7 @@ static struct bsg_command *bsg_get_done_cmd(struct bsg_device *bd) static int blk_complete_sgv4_hdr_rq(struct request *rq, struct sg_io_v4 *hdr, struct bio *bio, struct bio *bidi_bio) { + struct scsi_request *req = scsi_req(rq); int ret = 0; dprintk("rq %p bio %p 0x%x\n", rq, bio, rq->errors); @@ -407,12 +404,12 @@ static int blk_complete_sgv4_hdr_rq(struct request *rq, struct sg_io_v4 *hdr, hdr->info |= SG_INFO_CHECK; hdr->response_len = 0; - if (rq->sense_len && hdr->response) { + if (req->sense_len && hdr->response) { int len = min_t(unsigned int, hdr->max_response_len, - rq->sense_len); + req->sense_len); ret = copy_to_user((void __user *)(unsigned long)hdr->response, - rq->sense, len); + req->sense, len); if (!ret) hdr->response_len = len; else @@ -420,14 +417,14 @@ static int blk_complete_sgv4_hdr_rq(struct request *rq, struct sg_io_v4 *hdr, } if (rq->next_rq) { - hdr->dout_resid = rq->resid_len; - hdr->din_resid = rq->next_rq->resid_len; + hdr->dout_resid = req->resid_len; + hdr->din_resid = scsi_req(rq->next_rq)->resid_len; blk_rq_unmap_user(bidi_bio); blk_put_request(rq->next_rq); } else if (rq_data_dir(rq) == READ) - hdr->din_resid = rq->resid_len; + hdr->din_resid = req->resid_len; else - hdr->dout_resid = rq->resid_len; + hdr->dout_resid = req->resid_len; /* * If the request generated a negative error number, return it @@ -439,8 +436,7 @@ static int blk_complete_sgv4_hdr_rq(struct request *rq, struct sg_io_v4 *hdr, ret = rq->errors; blk_rq_unmap_user(bio); - if (rq->cmd != rq->__cmd) - kfree(rq->cmd); + scsi_req_free_cmd(req); blk_put_request(rq); return ret; @@ -625,7 +621,7 @@ static int __bsg_write(struct bsg_device *bd, const char __user *buf, /* * get a request, fill in the blanks, and add to request queue */ - rq = bsg_map_hdr(bd, &bc->hdr, has_write_perm, bc->sense); + rq = bsg_map_hdr(bd, &bc->hdr, has_write_perm); if (IS_ERR(rq)) { ret = PTR_ERR(rq); rq = NULL; @@ -911,12 +907,11 @@ static long bsg_ioctl(struct file *file, unsigned int cmd, unsigned long arg) struct bio *bio, *bidi_bio = NULL; struct sg_io_v4 hdr; int at_head; - u8 sense[SCSI_SENSE_BUFFERSIZE]; if (copy_from_user(&hdr, uarg, sizeof(hdr))) return -EFAULT; - rq = bsg_map_hdr(bd, &hdr, file->f_mode & FMODE_WRITE, sense); + rq = bsg_map_hdr(bd, &hdr, file->f_mode & FMODE_WRITE); if (IS_ERR(rq)) return PTR_ERR(rq); |