[PATCH] BLOCK: Move the ReiserFS device ioctl compat stuff to the ReiserFS driver [try #6]

Move the ReiserFS device ioctl compat stuff from fs/compat_ioctl.c to the
ReiserFS driver so that the ReiserFS header file doesn't need to be included.

Signed-Off-By: David Howells <dhowells@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

3 files changed, 42 insertions, 0 deletions

diff --git a/fs/reiserfs/dir.c b/fs/reiserfs/dir.c
index 9aabcc0ccd2d..657050ad7430 100644
--- a/fs/reiserfs/dir.c
+++ b/fs/reiserfs/dir.c
@@ -22,6 +22,9 @@ const struct file_operations reiserfs_dir_operations = {
         .readdir = reiserfs_readdir,
         .fsync = reiserfs_dir_fsync,
         .ioctl = reiserfs_ioctl,
+#ifdef CONFIG_COMPAT
+        .compat_ioctl = reiserfs_compat_ioctl,
+#endif
 };
 
 static int reiserfs_dir_fsync(struct file *filp, struct dentry *dentry,
diff --git a/fs/reiserfs/file.c b/fs/reiserfs/file.c
index 1cfbe857ba27..3e08f7161a3d 100644
--- a/fs/reiserfs/file.c
+++ b/fs/reiserfs/file.c
@@ -2,6 +2,7 @@
  * Copyright 2000 by Hans Reiser, licensing governed by reiserfs/README
  */
 
+#include <linux/config.h>
 #include <linux/time.h>
 #include <linux/reiserfs_fs.h>
 #include <linux/reiserfs_acl.h>
@@ -1568,6 +1569,9 @@ const struct file_operations reiserfs_file_operations = {
         .read = generic_file_read,
         .write = reiserfs_file_write,
         .ioctl = reiserfs_ioctl,
+#ifdef CONFIG_COMPAT
+        .compat_ioctl = reiserfs_compat_ioctl,
+#endif
         .mmap = generic_file_mmap,
         .release = reiserfs_file_release,
         .fsync = reiserfs_sync_file,
diff --git a/fs/reiserfs/ioctl.c b/fs/reiserfs/ioctl.c
index a986b5e1e288..9c57578cb831 100644
--- a/fs/reiserfs/ioctl.c
+++ b/fs/reiserfs/ioctl.c
@@ -9,6 +9,7 @@
 #include <asm/uaccess.h>
 #include <linux/pagemap.h>
 #include <linux/smp_lock.h>
+#include <linux/compat.h>
 
 static int reiserfs_unpack(struct inode *inode, struct file *filp);
 
@@ -94,6 +95,40 @@ int reiserfs_ioctl(struct inode *inode, struct file *filp, unsigned int cmd,
         }
 }
 
+#ifdef CONFIG_COMPAT
+long reiserfs_compat_ioctl(struct file *file, unsigned int cmd,
+                                unsigned long arg)
+{
+        struct inode *inode = file->f_dentry->d_inode;
+        int ret;
+
+        /* These are just misnamed, they actually get/put from/to user an int */
+        switch (cmd) {
+        case REISERFS_IOC32_UNPACK:
+                cmd = REISERFS_IOC_UNPACK;
+                break;
+        case REISERFS_IOC32_GETFLAGS:
+                cmd = REISERFS_IOC_GETFLAGS;
+                break;
+        case REISERFS_IOC32_SETFLAGS:
+                cmd = REISERFS_IOC_SETFLAGS;
+                break;
+        case REISERFS_IOC32_GETVERSION:
+                cmd = REISERFS_IOC_GETVERSION;
+                break;
+        case REISERFS_IOC32_SETVERSION:
+                cmd = REISERFS_IOC_SETVERSION;
+                break;
+        default:
+                return -ENOIOCTLCMD;
+        }
+        lock_kernel();
+        ret = reiserfs_ioctl(inode, file, cmd, (unsigned long) compat_ptr(arg));
+        unlock_kernel();
+        return ret;
+}
+#endif
+
 /*
 ** reiserfs_unpack
 ** Function try to convert tail from direct item into indirect.