X-Git-Url: https://git.proxmox.com/?a=blobdiff_plain;f=block%2Fbsg.c;h=a9a8b8e0446f4434616a4f4d7f5513bd3a8936c9;hb=18fc2163b8a410d4d36b8f44658580731c0afaa1;hp=a57046de2f07f00eae78aaabe9b5e43c1ecc178f;hpb=f5e8c0ff563e6bf1633e5a35b0d9b8fe4c7560b8;p=mirror_ubuntu-artful-kernel.git diff --git a/block/bsg.c b/block/bsg.c index a57046de2f07..a9a8b8e0446f 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) @@ -176,7 +177,7 @@ static int blk_fill_sgv4_hdr_rq(struct request_queue *q, struct request *rq, * Check if sg_io_v4 from user is allowed and valid */ static int -bsg_validate_sgv4_hdr(struct sg_io_v4 *hdr, int *rw) +bsg_validate_sgv4_hdr(struct sg_io_v4 *hdr, int *op) { int ret = 0; @@ -197,7 +198,7 @@ bsg_validate_sgv4_hdr(struct sg_io_v4 *hdr, int *rw) ret = -EINVAL; } - *rw = hdr->dout_xfer_len ? WRITE : READ; + *op = hdr->dout_xfer_len ? REQ_OP_SCSI_OUT : REQ_OP_SCSI_IN; return ret; } @@ -205,13 +206,12 @@ 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; - int ret, rw; - unsigned int dxfer_len; + int ret; + unsigned int op, dxfer_len; void __user *dxferp = NULL; struct bsg_class_device *bcd = &q->bsg_dev; @@ -226,36 +226,35 @@ bsg_map_hdr(struct bsg_device *bd, struct sg_io_v4 *hdr, fmode_t has_write_perm, hdr->dout_xfer_len, (unsigned long long) hdr->din_xferp, hdr->din_xfer_len); - ret = bsg_validate_sgv4_hdr(hdr, &rw); + ret = bsg_validate_sgv4_hdr(hdr, &op); if (ret) return ERR_PTR(ret); /* * map scatter-gather elements separately and string them to request */ - rq = blk_get_request(q, rw, GFP_KERNEL); + rq = blk_get_request(q, op, 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) goto out; - if (rw == WRITE && hdr->din_xfer_len) { + if (op == REQ_OP_SCSI_OUT && hdr->din_xfer_len) { if (!test_bit(QUEUE_FLAG_BIDI, &q->queue_flags)) { ret = -EOPNOTSUPP; goto out; } - next_rq = blk_get_request(q, READ, GFP_KERNEL); + next_rq = blk_get_request(q, REQ_OP_SCSI_IN, GFP_KERNEL); if (IS_ERR(next_rq)) { ret = PTR_ERR(next_rq); next_rq = NULL; goto out; } rq->next_rq = next_rq; - next_rq->cmd_type = rq->cmd_type; dxferp = (void __user *)(unsigned long)hdr->din_xferp; ret = blk_rq_map_user(q, next_rq, NULL, dxferp, @@ -280,13 +279,9 @@ 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 +388,7 @@ 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 +403,12 @@ 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 +416,14 @@ 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 +435,7 @@ 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 +620,7 @@ 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 +906,11 @@ 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);