diff options
| author | Christoph Hellwig <hch@lst.de> | 2021-07-24 09:20:22 +0200 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2021-07-29 04:24:25 +0200 |
| commit | d52fe8f436a6d9850b5e528cb94a651563a77374 (patch) | |
| tree | 2e4a1c7a3f80aab5a39cf56da40d84c47ba97ecd /block | |
| parent | scsi: block: Add a queue_max_bytes() helper (diff) | |
| download | linux-d52fe8f436a6d9850b5e528cb94a651563a77374.tar.xz linux-d52fe8f436a6d9850b5e528cb94a651563a77374.zip | |
scsi: bsg: Decouple from scsi_cmd_ioctl()
Decouple bsg from scsi_cmd_ioctl(). This requires a small amount of code
duplication, but will allow moving all SCSI ioctl handling into SCSI
midlayer.
Link: https://lore.kernel.org/r/20210724072033.1284840-14-hch@lst.de
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'block')
| -rw-r--r-- | block/bsg.c | 24 | ||||
| -rw-r--r-- | block/scsi_ioctl.c | 16 |
2 files changed, 22 insertions, 18 deletions
diff --git a/block/bsg.c b/block/bsg.c index 79b42c5cafeb..df21df106d3b 100644 --- a/block/bsg.c +++ b/block/bsg.c @@ -351,7 +351,10 @@ static int bsg_set_command_q(struct bsg_device *bd, int __user *uarg) static long bsg_ioctl(struct file *file, unsigned int cmd, unsigned long arg) { struct bsg_device *bd = file->private_data; + struct request_queue *q = bd->queue; void __user *uarg = (void __user *) arg; + int __user *intp = uarg; + int val; switch (cmd) { /* @@ -366,16 +369,33 @@ static long bsg_ioctl(struct file *file, unsigned int cmd, unsigned long arg) * SCSI/sg ioctls */ case SG_GET_VERSION_NUM: + return put_user(30527, intp); case SCSI_IOCTL_GET_IDLUN: + return put_user(0, intp); case SCSI_IOCTL_GET_BUS_NUMBER: + return put_user(0, intp); case SG_SET_TIMEOUT: + if (get_user(val, intp)) + return -EFAULT; + q->sg_timeout = clock_t_to_jiffies(val); + return 0; case SG_GET_TIMEOUT: + return jiffies_to_clock_t(q->sg_timeout); case SG_GET_RESERVED_SIZE: + return put_user(min(q->sg_reserved_size, queue_max_bytes(q)), + intp); case SG_SET_RESERVED_SIZE: + if (get_user(val, intp)) + return -EFAULT; + if (val < 0) + return -EINVAL; + q->sg_reserved_size = + min_t(unsigned int, val, queue_max_bytes(q)); + return 0; case SG_EMULATED_HOST: - return scsi_cmd_ioctl(bd->queue, NULL, file->f_mode, cmd, uarg); + return put_user(1, intp); case SG_IO: - return bsg_sg_io(bd->queue, file->f_mode, uarg); + return bsg_sg_io(q, file->f_mode, uarg); case SCSI_IOCTL_SEND_COMMAND: pr_warn_ratelimited("%s: calling unsupported SCSI_IOCTL_SEND_COMMAND\n", current->comm); diff --git a/block/scsi_ioctl.c b/block/scsi_ioctl.c index c3871529e283..b875feb8d6bd 100644 --- a/block/scsi_ioctl.c +++ b/block/scsi_ioctl.c @@ -43,16 +43,6 @@ static int sg_get_version(int __user *p) return put_user(sg_version_num, p); } -static int scsi_get_idlun(struct request_queue *q, int __user *p) -{ - return put_user(0, p); -} - -static int scsi_get_bus(struct request_queue *q, int __user *p) -{ - return put_user(0, p); -} - static int sg_get_timeout(struct request_queue *q) { return jiffies_to_clock_t(q->sg_timeout); @@ -769,12 +759,6 @@ int scsi_cmd_ioctl(struct request_queue *q, struct gendisk *bd_disk, fmode_t mod case SG_GET_VERSION_NUM: err = sg_get_version(arg); break; - case SCSI_IOCTL_GET_IDLUN: - err = scsi_get_idlun(q, arg); - break; - case SCSI_IOCTL_GET_BUS_NUMBER: - err = scsi_get_bus(q, arg); - break; case SG_SET_TIMEOUT: err = sg_set_timeout(q, arg); break; |