int done_cmds;
wait_queue_head_t wq_done;
wait_queue_head_t wq_free;
- char name[BUS_ID_SIZE];
+ char name[20];
int max_queue;
unsigned long flags;
};
enum {
BSG_F_BLOCK = 1,
- BSG_F_WRITE_PERM = 2,
};
#define BSG_DEFAULT_CMDS 64
}
static int blk_fill_sgv4_hdr_rq(struct request_queue *q, struct request *rq,
- struct sg_io_v4 *hdr, int has_write_perm)
+ struct sg_io_v4 *hdr, struct bsg_device *bd,
+ fmode_t has_write_perm)
{
if (hdr->request_len > BLK_MAX_CDB) {
rq->cmd = kzalloc(hdr->request_len, GFP_KERNEL);
return -EFAULT;
if (hdr->subprotocol == BSG_SUB_PROTOCOL_SCSI_CMD) {
- if (blk_verify_command(rq->cmd, has_write_perm))
+ if (blk_verify_command(&q->cmd_filter, rq->cmd, has_write_perm))
return -EPERM;
} else if (!capable(CAP_SYS_RAWIO))
return -EPERM;
rq->timeout = q->sg_timeout;
if (!rq->timeout)
rq->timeout = BLK_DEFAULT_SG_TIMEOUT;
+ if (rq->timeout < BLK_MIN_SG_TIMEOUT)
+ rq->timeout = BLK_MIN_SG_TIMEOUT;
return 0;
}
* map sg_io_v4 to a request.
*/
static struct request *
-bsg_map_hdr(struct bsg_device *bd, struct sg_io_v4 *hdr)
+bsg_map_hdr(struct bsg_device *bd, struct sg_io_v4 *hdr, fmode_t has_write_perm,
+ u8 *sense)
{
struct request_queue *q = bd->queue;
struct request *rq, *next_rq = NULL;
rq = blk_get_request(q, rw, GFP_KERNEL);
if (!rq)
return ERR_PTR(-ENOMEM);
- ret = blk_fill_sgv4_hdr_rq(q, rq, hdr, test_bit(BSG_F_WRITE_PERM,
- &bd->flags));
+ ret = blk_fill_sgv4_hdr_rq(q, rq, hdr, bd, has_write_perm);
if (ret)
goto out;
next_rq->cmd_type = rq->cmd_type;
dxferp = (void*)(unsigned long)hdr->din_xferp;
- ret = blk_rq_map_user(q, next_rq, dxferp, hdr->din_xfer_len);
+ ret = blk_rq_map_user(q, next_rq, NULL, dxferp,
+ hdr->din_xfer_len, GFP_KERNEL);
if (ret)
goto out;
}
dxfer_len = 0;
if (dxfer_len) {
- ret = blk_rq_map_user(q, rq, dxferp, dxfer_len);
+ ret = blk_rq_map_user(q, rq, NULL, dxferp, dxfer_len,
+ GFP_KERNEL);
if (ret)
goto out;
}
+
+ rq->sense = sense;
+ rq->sense_len = 0;
+
return rq;
out:
if (rq->cmd != rq->__cmd)
static void bsg_add_command(struct bsg_device *bd, struct request_queue *q,
struct bsg_command *bc, struct request *rq)
{
- rq->sense = bc->sense;
- rq->sense_len = 0;
-
/*
* add bc command to busy queue and submit rq for io
*/
{
int ret = 0;
- dprintk("rq %p bio %p %u\n", rq, bio, rq->errors);
+ dprintk("rq %p bio %p 0x%x\n", rq, bio, rq->errors);
/*
* fill in all the output members
*/
set_bit(BSG_F_BLOCK, &bd->flags);
}
-static inline void bsg_set_write_perm(struct bsg_device *bd, struct file *file)
-{
- if (file->f_mode & FMODE_WRITE)
- set_bit(BSG_F_WRITE_PERM, &bd->flags);
- else
- clear_bit(BSG_F_WRITE_PERM, &bd->flags);
-}
-
/*
* Check if the error is a "real" error that we should return.
*/
dprintk("%s: read %Zd bytes\n", bd->name, count);
bsg_set_block(bd, file);
+
bytes_read = 0;
ret = __bsg_read(buf, count, bd, NULL, &bytes_read);
*ppos = bytes_read;
}
static int __bsg_write(struct bsg_device *bd, const char __user *buf,
- size_t count, ssize_t *bytes_written)
+ size_t count, ssize_t *bytes_written,
+ fmode_t has_write_perm)
{
struct bsg_command *bc;
struct request *rq;
/*
* get a request, fill in the blanks, and add to request queue
*/
- rq = bsg_map_hdr(bd, &bc->hdr);
+ rq = bsg_map_hdr(bd, &bc->hdr, has_write_perm, bc->sense);
if (IS_ERR(rq)) {
ret = PTR_ERR(rq);
rq = NULL;
dprintk("%s: write %Zd bytes\n", bd->name, count);
bsg_set_block(bd, file);
- bsg_set_write_perm(bd, file);
bytes_written = 0;
- ret = __bsg_write(bd, buf, count, &bytes_written);
+ ret = __bsg_write(bd, buf, count, &bytes_written,
+ file->f_mode & FMODE_WRITE);
+
*ppos = bytes_written;
/*
mutex_lock(&bsg_mutex);
do_free = atomic_dec_and_test(&bd->ref_count);
- if (!do_free)
+ if (!do_free) {
+ mutex_unlock(&bsg_mutex);
goto out;
+ }
+
+ hlist_del(&bd->dev_list);
+ mutex_unlock(&bsg_mutex);
dprintk("%s: tearing down\n", bd->name);
*/
ret = bsg_complete_all_commands(bd);
- hlist_del(&bd->dev_list);
kfree(bd);
out:
- mutex_unlock(&bsg_mutex);
kref_put(&q->bsg_dev.ref, bsg_kref_release_function);
if (do_free)
blk_put_queue(q);
}
bd->queue = rq;
+
bsg_set_block(bd, file);
atomic_set(&bd->ref_count, 1);
mutex_lock(&bsg_mutex);
hlist_add_head(&bd->dev_list, bsg_dev_idx_hash(iminor(inode)));
- strncpy(bd->name, rq->bsg_dev.class_dev->bus_id, sizeof(bd->name) - 1);
+ strncpy(bd->name, dev_name(rq->bsg_dev.class_dev), sizeof(bd->name) - 1);
dprintk("bound to <%s>, max queue %d\n",
format_dev_t(buf, inode->i_rdev), bd->max_queue);
case SG_EMULATED_HOST:
case SCSI_IOCTL_SEND_COMMAND: {
void __user *uarg = (void __user *) arg;
- return scsi_cmd_ioctl(file, bd->queue, NULL, cmd, uarg);
+ return scsi_cmd_ioctl(bd->queue, NULL, file->f_mode, cmd, uarg);
}
case SG_IO: {
struct request *rq;
struct bio *bio, *bidi_bio = NULL;
struct sg_io_v4 hdr;
+ u8 sense[SCSI_SENSE_BUFFERSIZE];
if (copy_from_user(&hdr, uarg, sizeof(hdr)))
return -EFAULT;
- rq = bsg_map_hdr(bd, &hdr);
+ rq = bsg_map_hdr(bd, &hdr, file->f_mode & FMODE_WRITE, sense);
if (IS_ERR(rq))
return PTR_ERR(rq);
if (name)
devname = name;
else
- devname = parent->bus_id;
+ devname = dev_name(parent);
/*
* we need a proper transport to send commands, not a stacked device
bcd->release = release;
kref_init(&bcd->ref);
dev = MKDEV(bsg_major, bcd->minor);
- class_dev = device_create(bsg_class, parent, dev, "%s", devname);
+ class_dev = device_create(bsg_class, parent, dev, NULL, "%s", devname);
if (IS_ERR(class_dev)) {
ret = PTR_ERR(class_dev);
goto put_dev;