From 52b499c438ff60991eb3855ca090782569b3e8cf Mon Sep 17 00:00:00 2001
From: David Howells <dhowells@redhat.com>
Date: Tue, 29 Aug 2006 19:06:18 +0100
Subject: [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>
---
 fs/compat_ioctl.c   | 12 ------------
 fs/reiserfs/dir.c   |  3 +++
 fs/reiserfs/file.c  |  4 ++++
 fs/reiserfs/ioctl.c | 35 +++++++++++++++++++++++++++++++++++
 4 files changed, 42 insertions(+), 12 deletions(-)

(limited to 'fs')

diff --git a/fs/compat_ioctl.c b/fs/compat_ioctl.c
index bd9c4f49d4e5..0346f2ab57c4 100644
--- a/fs/compat_ioctl.c
+++ b/fs/compat_ioctl.c
@@ -59,7 +59,6 @@
 #include <linux/pci.h>
 #include <linux/module.h>
 #include <linux/serial.h>
-#include <linux/reiserfs_fs.h>
 #include <linux/if_tun.h>
 #include <linux/ctype.h>
 #include <linux/ioctl32.h>
@@ -2014,16 +2013,6 @@ static int vfat_ioctl32(unsigned fd, unsigned cmd, unsigned long arg)
 	return ret;
 }
 
-#define REISERFS_IOC_UNPACK32               _IOW(0xCD,1,int)
-
-static int reiserfs_ioctl32(unsigned fd, unsigned cmd, unsigned long ptr)
-{
-        if (cmd == REISERFS_IOC_UNPACK32)
-                cmd = REISERFS_IOC_UNPACK;
-
-        return sys_ioctl(fd,cmd,ptr);
-}
-
 struct raw32_config_request
 {
         compat_int_t    raw_minor;
@@ -2784,7 +2773,6 @@ HANDLE_IOCTL(BLKGETSIZE64_32, do_blkgetsize64)
 /* vfat */
 HANDLE_IOCTL(VFAT_IOCTL_READDIR_BOTH32, vfat_ioctl32)
 HANDLE_IOCTL(VFAT_IOCTL_READDIR_SHORT32, vfat_ioctl32)
-HANDLE_IOCTL(REISERFS_IOC_UNPACK32, reiserfs_ioctl32)
 /* Raw devices */
 HANDLE_IOCTL(RAW_SETBIND, raw_ioctl)
 HANDLE_IOCTL(RAW_GETBIND, raw_ioctl)
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.
-- 
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