mirror of https://github.com/schoebel/mars
257 lines
6.2 KiB
C
257 lines
6.2 KiB
C
/*
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* MARS Long Distance Replication Software
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*
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* This file is part of MARS project: http://schoebel.github.io/mars/
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*
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* Copyright (C) 2010-2014 Thomas Schoebel-Theuer
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* Copyright (C) 2011-2014 1&1 Internet AG
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef _MARS_COMPAT
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#define _MARS_COMPAT
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#include <linux/major.h>
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/* TRANSITIONAL compatibility to BOTH the old prepatch
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* and the new wrappers around vfs_*().
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*/
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#ifdef MARS_MAJOR
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#define MARS_HAS_PREPATCH
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#else
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#define MARS_MAJOR (DRBD_MAJOR + 1)
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#endif
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#ifdef MARS_HAS_PREPATCH
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#include <linux/syscalls.h>
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#else /* MARS_HAS_PREPATCH */
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#include <linux/compiler.h>
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#include <linux/time.h>
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#include "lamport.h"
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extern int _compat_symlink(
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const char __user *oldname,
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const char __user *newname,
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struct lamport_time *mtime);
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extern int _compat_mkdir(
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const char __user *pathname,
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int mode);
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extern int _compat_rename(
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const char __user *oldname,
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const char __user *newname);
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extern int _compat_unlink(
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const char __user *pathname);
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#endif /* MARS_HAS_PREPATCH */
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/* Various compatibility checks for upstream kernels.
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* This is a hell.
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*/
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/* For bio block layer compatibility */
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#include <linux/blk_types.h>
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#include <linux/bio.h>
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#ifdef __bvec_iter_bvec
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#define MARS_HAS_BVEC_ITER
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#endif
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/* Detect upstream commits
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* dc3b17cc8bf21307c7e076e7c778d5db756f7871
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* d03f6cdc1fc422accb734c7c07a661a0018d8631
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* b1d2dc5659b41741f5a29b2ade76ffb4e5bb13d8
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* via fd2d332677c687ca90c12a47d6c377c547100b56
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*/
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#include <linux/blkdev.h>
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#ifdef BLK_QC_T_INTERNAL
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#define MARS_HAS_BDI_GET
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#endif
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#ifdef MARS_HAS_BDI_GET
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#include <linux/backing-dev.h>
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#endif
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/* Detect upstream commits
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* 2a842acab109f40f0d7d10b38e9ca88390628996
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* 4e4cbee93d56137ebff722be022cae5f70ef84fb
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* & neighbour commits.
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*/
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#ifdef BLK_STS_OK
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#define MARS_HAS_BI_STATUS
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#else
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/* adaptation to 4246a0b63bd8f56a1469b12eafeb875b1041a451 and 8ae126660fddbeebb9251a174e6fa45b6ad8f932 */
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#ifndef bio_io_error
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#define MARS_HAS_BI_ERROR
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#else
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#define MARS_HAS_MERGE_BVEC
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#endif
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#endif
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/* Adapt to 74d46992e0d9dee7f1f376de0d56d31614c8a17a
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*/
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#ifdef bio_set_dev
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#define MARS_HAS_SET_DEV
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#endif
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/* adapt to 4e1b2d52a80d79296a5d899d73249748dea71a53 and many others */
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#ifdef bio_op
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#define MARS_HAS_NEW_BIO_OP
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#endif
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#ifdef bio_end_sector
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#define MARS_HAS_VOID_RELEASE
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#endif
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#ifdef __bvec_iter_bvec
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#define MARS_HAS_BVEC_ITER
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#endif
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/* 54efd50bfd873e2dbf784e0b21a8027ba4299a3e and 8ae126660fddbeebb9251a174e6fa45b6ad8f932,
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* detected via 4246a0b63bd8f56a1469b12eafeb875b1041a451
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*/
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#ifndef BIO_UPTODATE
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#define NEED_BIO_SPLIT
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#endif
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/* Adapt to modification of blk_queue_split() in
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* af67c31fba3b879b241536a48df703a2eee18ebf
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* detected via f4560ffe8cec1361b1021d81aca6a4173f8e7c87
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*/
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#ifdef QUEUE_FLAG_QUIESCED
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#define MARS_HAS_BIO_SPLIT2
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#endif
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/* adapt to 4e1b2d52a80d79296a5d899d73249748dea71a53 and many others */
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#ifdef bio_op
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#define MARS_HAS_NEW_BIO_OP
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#endif
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/* adapt to 8d2bbd4c8236e9e38e6b36ac9e2c54fdcfe5b335
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*/
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#ifdef BIO_THROTTLED
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#define MARS_HAS_BIO_THROTTLED
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#endif
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/* IO accounting */
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/* adapt to 394ffa503bc40e32d7f54a9b817264e81ce131b4
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* detected via b25de9d6da49b1a8760a89672283128aa8c7
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*/
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#ifndef BIO_EOPNOTSUPP
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#define MARS_HAS_GENERIC_BLK_ACCOUNTING
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#elif defined(part_stat_lock)
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#define MARS_HAS_OLD_BLK_ACCOUNTING
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#endif
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/* adapt to d62e26b3ffd28f16ddae85a1babd0303a1a6dfb6
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* detected via e743eb1ecd5564b5ae0a4a76c1566f748a358839
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*/
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#ifndef QUEUE_FLAG_SYNCFULL
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#define MARS_HAS_NEW_GENERIC_BLK_ACCOUNTING
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#endif
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/* vfs stuff */
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/* Adapt to
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* eb031849d52e61d24ba54e9d27553189ff328174 and siblings
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* bdd1d2d3d251c65b74ac4493e08db18971c09240
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* e13ec939e96b13e664bb6cee361cc976a0ee621a
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* detected via e462ec50cb5fad19f6003a3d8087f4a0945dd2b1
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*/
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#ifdef SB_RDONLY
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#define MARS_HAS_KERNEL_READ
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#endif
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/* Adapt to fd4a0edf2a3d781c6ae07d2810776ce22302ee1c
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* detected via 76fca90e9f3abc82114d9d02d8e14e0324a18ca2
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*/
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#ifdef IOP_DEFAULT_READLINK
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#define MARS_HAS_VFS_READLINK
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#endif
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/* for mm stuff, should disappear */
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/* adapt to 68e21be2916b359fd8afb536c1911dc014cfd03e
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* detected via dea38c74cb9205341f52b8d8ae18f61247a43ea8
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*/
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#ifndef CALC_LOAD
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#include <linux/sched/mm.h>
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#endif
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/* for networking */
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#include <net/sock.h>
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#ifndef TCP_MAX_REORDERING
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#define __HAS_IOV_ITER
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#endif
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/* see eeb1bd5c40edb0e2fd925c8535e2fdebdbc5cef2 */
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#ifdef sk_net_refcnt
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#define __HAS_STRUCT_NET
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#endif
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/* for crypto stuff */
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#include <linux/crypto.h>
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/*
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* Forced by 896545098777564212b9e91af4c973f094649aa7
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* Detected by 7b5a080b3c46f0cac71c0d0262634c6517d4ee4f
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*/
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#ifdef CRYPTO_ALG_TYPE_SHASH
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#define MARS_HAS_NEW_CRYPTO
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#endif
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#if defined(CONFIG_CRC32C) || defined(CONFIG_CRYPTO_CRC32C) || defined(CONFIG_CRYPTO_CRC32C_MODULE)
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#define HAS_CRC32C
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#endif
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#if defined(CONFIG_CRC32) || defined(CONFIG_CRYPTO_CRC32) || defined(CONFIG_CRYPTO_CRC32_MODULE)
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#define HAS_CRC32
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#endif
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#if defined(CONFIG_CRYPTO_SHA1) || defined(CONFIG_CRYPTO_SHA1_MODULE)
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#define HAS_SHA1
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#endif
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/* compression stuff */
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#if (defined(CONFIG_LZO_COMPRESS) || defined(CONFIG_LZO_COMPRESS_MODULE)) && \
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(defined(CONFIG_LZO_DECOMPRESS) || defined(CONFIG_LZO_DECOMPRESS_MODULE))
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#include <linux/lzo.h>
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#define HAS_LZO
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#endif
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#if (defined(CONFIG_LZ4_COMPRESS) || defined(CONFIG_LZ4_COMPRESS_MODULE)) && \
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(defined(CONFIG_LZ4_DECOMPRESS) || defined(CONFIG_LZ4_DECOMPRESS_MODULE))
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#include <linux/lz4.h>
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#define HAS_LZ4
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/* adapt to 4e1a33b105ddf201f66dcc44490c6086a25eca0b
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*/
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#ifdef LZ4_ACCELERATION_DEFAULT
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#define HAS_FAST_LZ4
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#endif
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#endif
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#if defined(CONFIG_ZLIB_INFLATE) && defined(CONFIG_ZLIB_DEFLATE)
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#include <linux/zlib.h>
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#define HAS_ZLIB
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#endif
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#endif /* _MARS_COMPAT */
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