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compat_ioctl: move BLKPG handling to block/compat_ioctl.c

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BLKPG is common to all block devices, so it should be handled
by common code.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
This commit is contained in:
Arnd Bergmann
2007-10-09 13:23:56 +02:00
committed by Jens Axboe
parent 9617db085c
commit 18cf7f8723
2 changed files with 31 additions and 33 deletions
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31
block/compat_ioctl.c
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@@ -92,6 +92,35 @@ static int compat_hdio_ioctl(struct inode *inode, struct file *file,
return error;
}
struct compat_blkpg_ioctl_arg {
compat_int_t op;
compat_int_t flags;
compat_int_t datalen;
compat_caddr_t data;
};
static int compat_blkpg_ioctl(struct inode *inode, struct file *file,
unsigned int cmd, struct compat_blkpg_ioctl_arg __user *ua32)
{
struct blkpg_ioctl_arg __user *a = compat_alloc_user_space(sizeof(*a));
compat_caddr_t udata;
compat_int_t n;
int err;
err = get_user(n, &ua32->op);
err |= put_user(n, &a->op);
err |= get_user(n, &ua32->flags);
err |= put_user(n, &a->flags);
err |= get_user(n, &ua32->datalen);
err |= put_user(n, &a->datalen);
err |= get_user(udata, &ua32->data);
err |= put_user(compat_ptr(udata), &a->data);
if (err)
return err;
return blkdev_ioctl(inode, file, cmd, (unsigned long)a);
}
#define BLKBSZGET_32 _IOR(0x12, 112, int)
#define BLKBSZSET_32 _IOW(0x12, 113, int)
#define BLKGETSIZE64_32 _IOR(0x12, 114, int)
@@ -348,6 +377,8 @@ long compat_blkdev_ioctl(struct file *file, unsigned cmd, unsigned long arg)
case BLKBSZSET_32:
return blkdev_ioctl(inode, file, BLKBSZSET,
(unsigned long)compat_ptr(arg));
case BLKPG:
return compat_blkpg_ioctl(inode, file, cmd, compat_ptr(arg));
}
lock_kernel();