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bsg: add a request_queue argument to scsi_cmd_ioctl()

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bsg uses scsi_cmd_ioctl() for some SCSI/sg ioctl
commands. scsi_cmd_ioctl() gets a request queue from a gendisk
arguement. This prevents bsg being bound to SCSI devices that don't
have a gendisk (like OSD). This adds a request_queue argument to
scsi_cmd_ioctl(). The SCSI/sg ioctl commands doesn't use a gendisk so
it's safe for any SCSI devices to use scsi_cmd_ioctl().

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
This commit is contained in:
FUJITA Tomonori 2007-07-09 12:39:20 +02:00 committed by Jens Axboe
parent 7e75d73080
commit 45e79a3acd
8 changed files with 13 additions and 14 deletions
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2
block/bsg.c
View File

@ -900,7 +900,7 @@ bsg_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
case SG_EMULATED_HOST:
case SCSI_IOCTL_SEND_COMMAND: {
void __user *uarg = (void __user *) arg;
return scsi_cmd_ioctl(file, bd->disk, cmd, uarg);
return scsi_cmd_ioctl(file, bd->queue, bd->disk, cmd, uarg);
}
case SG_IO: {
struct request *rq;

10
block/scsi_ioctl.c
View File

@ -548,16 +548,12 @@ static inline int blk_send_start_stop(request_queue_t *q, struct gendisk *bd_dis
return __blk_send_generic(q, bd_disk, GPCMD_START_STOP_UNIT, data);
}
int scsi_cmd_ioctl(struct file *file, struct gendisk *bd_disk, unsigned int cmd, void __user *arg)
int scsi_cmd_ioctl(struct file *file, struct request_queue *q,
struct gendisk *bd_disk, unsigned int cmd, void __user *arg)
{
request_queue_t *q;
int err;
q = bd_disk->queue;
if (!q)
return -ENXIO;
if (blk_get_queue(q))
if (!q || blk_get_queue(q))
return -ENXIO;
switch (cmd) {

2
drivers/block/ub.c
View File

@ -1709,7 +1709,7 @@ static int ub_bd_ioctl(struct inode *inode, struct file *filp,
struct gendisk *disk = inode->i_bdev->bd_disk;
void __user *usermem = (void __user *) arg;
return scsi_cmd_ioctl(filp, disk, cmd, usermem);
return scsi_cmd_ioctl(filp, disk->queue, disk, cmd, usermem);
}
/*

3
drivers/cdrom/cdrom.c
View File

@ -2695,11 +2695,12 @@ int cdrom_ioctl(struct file * file, struct cdrom_device_info *cdi,
{
void __user *argp = (void __user *)arg;
int ret;
struct gendisk *disk = ip->i_bdev->bd_disk;
/*
* Try the generic SCSI command ioctl's first.
*/
ret = scsi_cmd_ioctl(file, ip->i_bdev->bd_disk, cmd, argp);
ret = scsi_cmd_ioctl(file, disk->queue, disk, cmd, argp);
if (ret != -ENOTTY)
return ret;

2
drivers/ide/ide.c
View File

@ -1052,7 +1052,7 @@ int generic_ide_ioctl(ide_drive_t *drive, struct file *file, struct block_device
int err, (*setfunc)(ide_drive_t *, int);
u8 *val;
err = scsi_cmd_ioctl(file, bdev->bd_disk, cmd, p);
err = scsi_cmd_ioctl(file, bdev->bd_disk->queue, bdev->bd_disk, cmd, p);
if (err != -ENOTTY)
return err;

2
drivers/scsi/sd.c
View File

@ -684,7 +684,7 @@ static int sd_ioctl(struct inode * inode, struct file * filp,
case SCSI_IOCTL_GET_BUS_NUMBER:
return scsi_ioctl(sdp, cmd, p);
default:
error = scsi_cmd_ioctl(filp, disk, cmd, p);
error = scsi_cmd_ioctl(filp, disk->queue, disk, cmd, p);
if (error != -ENOTTY)
return error;
}

3
drivers/scsi/st.c
View File

@ -3549,7 +3549,8 @@ static int st_ioctl(struct inode *inode, struct file *file,
!capable(CAP_SYS_RAWIO))
i = -EPERM;
else
i = scsi_cmd_ioctl(file, STp->disk, cmd_in, p);
i = scsi_cmd_ioctl(file, STp->disk->queue,
STp->disk, cmd_in, p);
if (i != -ENOTTY)
return i;
break;

3
include/linux/blkdev.h
View File

@ -644,7 +644,8 @@ extern void blk_requeue_request(request_queue_t *, struct request *);
extern void blk_plug_device(request_queue_t *);
extern int blk_remove_plug(request_queue_t *);
extern void blk_recount_segments(request_queue_t *, struct bio *);
extern int scsi_cmd_ioctl(struct file *, struct gendisk *, unsigned int, void __user *);
extern int scsi_cmd_ioctl(struct file *, struct request_queue *,
struct gendisk *, unsigned int, void __user *);
extern int sg_scsi_ioctl(struct file *, struct request_queue *,
struct gendisk *, struct scsi_ioctl_command __user *);