diff options
author | Al Viro <viro@zeniv.linux.org.uk> | 2007-08-30 04:34:12 +0400 |
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committer | Al Viro <viro@zeniv.linux.org.uk> | 2008-10-21 15:47:26 +0400 |
commit | 633a08b81206122469365b4c72eaeb71f04f2cb4 (patch) | |
tree | 9cd30507efd30645d30d351c7ad0d5966f806532 /block/ioctl.c | |
parent | a0eb62a0a4470fef5a5f41e7f1442fdd667220ef (diff) | |
download | linux-633a08b81206122469365b4c72eaeb71f04f2cb4.tar.xz |
[PATCH] introduce __blkdev_driver_ioctl()
Analog of blkdev_driver_ioctl() with sane arguments. For
now uses fake struct file, by the end of the series it won't
and blkdev_driver_ioctl() will become a wrapper around it.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'block/ioctl.c')
-rw-r--r-- | block/ioctl.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/block/ioctl.c b/block/ioctl.c index 38bee321e1fa..9a26ace6d042 100644 --- a/block/ioctl.c +++ b/block/ioctl.c @@ -283,6 +283,37 @@ int blkdev_driver_ioctl(struct inode *inode, struct file *file, } EXPORT_SYMBOL_GPL(blkdev_driver_ioctl); +int __blkdev_driver_ioctl(struct block_device *bdev, fmode_t mode, + unsigned cmd, unsigned long arg) +{ + struct gendisk *disk = bdev->bd_disk; + int ret; + /* you bet it'll go away by the end of patch series */ + struct file fake_file = {}; + struct dentry fake_dentry = {}; + fake_file.f_mode = mode; + fake_file.f_path.dentry = &fake_dentry; + fake_dentry.d_inode = bdev->bd_inode; + + if (disk->fops->unlocked_ioctl) + return disk->fops->unlocked_ioctl(&fake_file, cmd, arg); + + if (disk->fops->ioctl) { + lock_kernel(); + ret = disk->fops->ioctl(bdev->bd_inode, &fake_file, cmd, arg); + unlock_kernel(); + return ret; + } + + return -ENOTTY; +} +/* + * For the record: _GPL here is only because somebody decided to slap it + * on the previous export. Sheer idiocy, since it wasn't copyrightable + * at all and could be open-coded without any exports by anybody who cares. + */ +EXPORT_SYMBOL_GPL(__blkdev_driver_ioctl); + /* * always keep this in sync with compat_blkdev_ioctl() and * compat_blkdev_locked_ioctl() |