mars/kernel/compat.h
2019-12-25 09:19:07 +01:00

130 lines
3.0 KiB
C

/*
* MARS Long Distance Replication Software
*
* This file is part of MARS project: http://schoebel.github.io/mars/
*
* Copyright (C) 2010-2014 Thomas Schoebel-Theuer
* Copyright (C) 2011-2014 1&1 Internet AG
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef _MARS_COMPAT
#define _MARS_COMPAT
#include <linux/major.h>
/* TRANSITIONAL compatibility to BOTH the old prepatch
* and the new wrappers around vfs_*().
*/
#ifdef MARS_MAJOR
#define MARS_HAS_PREPATCH
#else
#define MARS_MAJOR (DRBD_MAJOR + 1)
#endif
#ifdef MARS_HAS_PREPATCH
#include <linux/syscalls.h>
#else /* MARS_HAS_PREPATCH */
#include <linux/compiler.h>
#include <linux/time.h>
#include "lamport.h"
extern int _compat_symlink(
const char __user *oldname,
const char __user *newname,
struct lamport_time *mtime);
extern int _compat_mkdir(
const char __user *pathname,
int mode);
extern int _compat_rename(
const char __user *oldname,
const char __user *newname);
extern int _compat_unlink(
const char __user *pathname);
#endif /* MARS_HAS_PREPATCH */
/* Various compatibility checks for upstream kernels.
* This is a hell.
*/
#ifdef __bvec_iter_bvec
#define MARS_HAS_BVEC_ITER
#endif
/* adaptation to 4246a0b63bd8f56a1469b12eafeb875b1041a451 and 8ae126660fddbeebb9251a174e6fa45b6ad8f932 */
#ifndef bio_io_error
#define MARS_HAS_BI_ERROR
#else
#define MARS_HAS_MERGE_BVEC
#endif
/* adapt to 4e1b2d52a80d79296a5d899d73249748dea71a53 and many others */
#ifdef bio_op
#define MARS_HAS_NEW_BIO_OP
#endif
#ifdef bio_end_sector
#define MARS_HAS_VOID_RELEASE
#endif
#ifdef __bvec_iter_bvec
#define MARS_HAS_BVEC_ITER
#endif
/* 54efd50bfd873e2dbf784e0b21a8027ba4299a3e and 8ae126660fddbeebb9251a174e6fa45b6ad8f932,
* detected via 4246a0b63bd8f56a1469b12eafeb875b1041a451
*/
#ifndef BIO_UPTODATE
#define NEED_BIO_SPLIT
#endif
/* adapt to 4e1b2d52a80d79296a5d899d73249748dea71a53 and many others */
#ifdef bio_op
#define MARS_HAS_NEW_BIO_OP
#endif
/* for networking */
#include <net/sock.h>
#ifndef TCP_MAX_REORDERING
#define __HAS_IOV_ITER
#endif
/* see eeb1bd5c40edb0e2fd925c8535e2fdebdbc5cef2 */
#ifdef sk_net_refcnt
#define __HAS_STRUCT_NET
#endif
/* for crypto stuff */
#include <linux/crypto.h>
/*
* Forced by 896545098777564212b9e91af4c973f094649aa7
* Detected by 7b5a080b3c46f0cac71c0d0262634c6517d4ee4f
*/
#ifdef CRYPTO_ALG_TYPE_SHASH
#define MARS_HAS_NEW_CRYPTO
#endif
#endif /* _MARS_COMPAT */