[PATCH 2/5] skd: implement trivial scsi ioctls directly
From: Christoph Hellwig <hch@lst.de>
Date: 2017-01-28 09:32:46
Also in:
virtualization
Subsystem:
block layer, the rest · Maintainers:
Jens Axboe, Linus Torvalds
This way there is no need to drag in a dependency on the BLOCK_PC code, which is going to become optional. Signed-off-by: Christoph Hellwig <hch@lst.de> --- drivers/block/skd_main.c | 15 +++++++++++---- 1 file changed, 11 insertions(+), 4 deletions(-)
diff --git a/drivers/block/skd_main.c b/drivers/block/skd_main.c
index abf805e..27833e4 100644
--- a/drivers/block/skd_main.c
+++ b/drivers/block/skd_main.c@@ -1204,10 +1204,11 @@ static void skd_complete_special(struct skd_device *skdev, static int skd_bdev_ioctl(struct block_device *bdev, fmode_t mode, uint cmd_in, ulong arg) { - int rc = 0; + static const int sg_version_num = 30527; + int rc = 0, timeout; struct gendisk *disk = bdev->bd_disk; struct skd_device *skdev = disk->private_data; - void __user *p = (void *)arg; + int __user *p = (int __user *)arg; pr_debug("%s:%s:%d %s: CMD[%s] ioctl mode 0x%x, cmd 0x%x arg %0lx\n", skdev->name, __func__, __LINE__,
@@ -1218,12 +1219,18 @@ static int skd_bdev_ioctl(struct block_device *bdev, fmode_t mode, switch (cmd_in) { case SG_SET_TIMEOUT: + rc = get_user(timeout, p); + if (!rc) + disk->queue->sg_timeout = clock_t_to_jiffies(timeout); + break; case SG_GET_TIMEOUT: + rc = jiffies_to_clock_t(disk->queue->sg_timeout); + break; case SG_GET_VERSION_NUM: - rc = scsi_cmd_ioctl(disk->queue, disk, mode, cmd_in, p); + rc = put_user(sg_version_num, p); break; case SG_IO: - rc = skd_ioctl_sg_io(skdev, mode, p); + rc = skd_ioctl_sg_io(skdev, mode, (void __user *)arg); break; default:
--
2.1.4