From d52fe8f436a6d9850b5e528cb94a651563a77374 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Sat, 24 Jul 2021 09:20:22 +0200 Subject: 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 Signed-off-by: Martin K. Petersen --- block/bsg.c | 24 ++++++++++++++++++++++-- 1 file changed, 22 insertions(+), 2 deletions(-) (limited to 'block/bsg.c') 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); -- cgit