bsg: add a request_queue argument to scsi_cmd_ioctl()

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>

diff --git a/block/bsg.c b/block/bsg.c
index c85d961..0427ece 100644 (file)
--- a/block/bsg.c
+++ b/block/bsg.c
@@ -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;

diff --git a/block/scsi_ioctl.c b/block/scsi_ioctl.c
index db53b2c..a26ba07 100644 (file)
--- a/block/scsi_ioctl.c
+++ b/block/scsi_ioctl.c
@@ -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) {

diff --git a/drivers/block/ub.c b/drivers/block/ub.c
index 18c8b6c..8b13d7d 100644 (file)
--- a/drivers/block/ub.c
+++ b/drivers/block/ub.c
@@ -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);
 }
 
 /*

diff --git a/drivers/cdrom/cdrom.c b/drivers/cdrom/cdrom.c
index aa5468f..499019b 100644 (file)
--- a/drivers/cdrom/cdrom.c
+++ b/drivers/cdrom/cdrom.c
@@ -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;
 

diff --git a/drivers/ide/ide.c b/drivers/ide/ide.c
index 9ae60a7..8cd7694 100644 (file)
--- a/drivers/ide/ide.c
+++ b/drivers/ide/ide.c
@@ -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;
 

diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
index 448d316..424d557 100644 (file)
--- a/drivers/scsi/sd.c
+++ b/drivers/scsi/sd.c
@@ -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;
        }

diff --git a/drivers/scsi/st.c b/drivers/scsi/st.c
index 55bfecc..a4f7b84 100644 (file)
--- a/drivers/scsi/st.c
+++ b/drivers/scsi/st.c
@@ -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;

diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index f6bc0d0..2746632 100644 (file)
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -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 *);