compat_ioctl: move BLKPG handling to block/compat_ioctl.c
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>
diff --git a/block/compat_ioctl.c b/block/compat_ioctl.c
index 5c6dafa..44807d3 100644
--- a/block/compat_ioctl.c
+++ b/block/compat_ioctl.c
@@ -92,6 +92,35 @@
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 @@
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();