%PDF-
%PDF-
Mini Shell
Mini Shell
// Copyright (c) Veeam Software Group GmbH
#ifndef STDAFX_H_
#define STDAFX_H_
#include <linux/init.h>
#include <linux/module.h>
#include <linux/version.h>
#include "config.h"
#if defined(DISTRIB_NAME_OPENSUSE_LEAP) || defined(DISTRIB_NAME_OPENSUSE) || defined(DISTRIB_NAME_SLES) || defined(DISTRIB_NAME_SLES_SAP)
#ifndef OS_RELEASE_SUSE
#define OS_RELEASE_SUSE
#endif
#endif
#if LINUX_VERSION_CODE < KERNEL_VERSION(3,2,0)
#define HAVE_MAKE_REQUEST_INT
#endif
#if LINUX_VERSION_CODE >= KERNEL_VERSION(4,18,0)
#ifndef VEEAMSNAP_MQ_IO
#define VEEAMSNAP_MQ_IO
#endif
#endif
#if ((LINUX_VERSION_CODE >= KERNEL_VERSION(5,8,0)) && (LINUX_VERSION_CODE < KERNEL_VERSION(5,9,0))) || (defined(BLK_MQ_MAKE_REQUEST_ADDR) || defined(BLK_MQ_MAKE_REQUEST_EXPORTED))
#ifndef VEEAMSNAP_MQ_REQUEST
#define VEEAMSNAP_MQ_REQUEST
#endif
#endif
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(5,9,0)) || (defined(OS_RELEASE_SUSE) && (DISTRIB_VERSION_1 == 15) && (DISTRIB_VERSION_2 == 3)) || defined(SUBMIT_BIO_NOACCT_EXPORTED)
# ifndef VEEAMSNAP_DISK_SUBMIT_BIO
# define VEEAMSNAP_DISK_SUBMIT_BIO
# endif
#endif
#if LINUX_VERSION_CODE < KERNEL_VERSION(5,11,0)
#ifndef VEEAMSNAP_BLK_FREEZE
#define VEEAMSNAP_BLK_FREEZE
#endif
#endif
#if LINUX_VERSION_CODE >= KERNEL_VERSION(5,12,0)
# ifndef VEEAMSNAP_BDEV_BIO
# define VEEAMSNAP_BDEV_BIO
# endif
#endif
/* Since kernel 5.14 we use blk_alloc_disk() instead of blk_alloc_queue() */
#if LINUX_VERSION_CODE >= KERNEL_VERSION(5,14,0)
# ifndef VEEAMSNAP_BLK_ALLOC_DISK
# define VEEAMSNAP_BLK_ALLOC_DISK
# endif
#endif
#include <linux/fs.h>
#include <linux/types.h>
#ifdef HAVE_GENHD_H
#include <linux/genhd.h>
#endif
#include <linux/blkdev.h>
#include <linux/bio.h>
#include <linux/hdreg.h> // For struct hd_geometry
#include <linux/errno.h>
#include <linux/slab.h>
#include <linux/vmalloc.h>
#include <linux/kthread.h>
#include <linux/sched.h>
#include <linux/mutex.h>
#include <linux/spinlock.h>
#include <linux/rwsem.h>
#include <linux/wait.h>
#include <linux/bitmap.h>
#include <asm/atomic.h>
#include <linux/random.h>
#ifndef pr_warn
#define pr_warn pr_warning
#endif
#include "log.h"
#define LICENCE_STR "GPL"
#define AUTHOR_STR "Veeam Software Group GmbH"
#define VEEAMSNAP_MEMORY_LEAK_CONTROL
#include "mem_alloc.h"
#define DESCRIPTION_STR "Veeam Snapshot Kernel Module"
#define MODULE_NAME "veeamsnap"
#define VEEAM_SNAP_IMAGE "veeamimage"
#ifndef SECTOR_SHIFT
#define SECTOR_SHIFT 9
#endif
#ifndef SECTOR_SIZE
#define SECTOR_SIZE (1 << SECTOR_SHIFT)
#endif
#define SECTORS_IN_PAGE (PAGE_SIZE / SECTOR_SIZE)
#define SUCCESS 0
#define SNAPSHOTDATA_MEMORY_SIZE ( 128 << 20 )
typedef unsigned char byte_t;
typedef unsigned long long stream_size_t;
#define SNAPDATA_SPARSE_CHANGES // use sparse bitmap for snapdata collection
#define SPARSE_BLOCK_CACHEABLE // use cache for sparse block arrays
#define DEFER_IO_COPY_REQUEST_LENGTH 10
#define DEFER_IO_DIO_REQUEST_LENGTH 250
#define DEFER_IO_DIO_REQUEST_SECTORS_COUNT (10*1024*1024/SECTOR_SIZE)
//#define VEEAMIMAGE_THROTTLE_TIMEOUT ( 30*HZ ) //delay 30 sec
//#define VEEAMIMAGE_THROTTLE_TIMEOUT ( 3*HZ ) //delay 3 sec
#define VEEAMIMAGE_THROTTLE_TIMEOUT ( 1*HZ ) //delay 1 sec
//#define VEEAMIMAGE_THROTTLE_TIMEOUT ( HZ/1000 * 10 ) //delay 10 ms
int get_debuglogging( void );
#define VEEAM_LL_DEFAULT 0 /* default as normal*/
#define VEEAM_LL_LO 2 /* minimal logging */
#define VEEAM_LL_NORM 4 /* normal */
#define VEEAM_LL_HI 7 /* debug logging */
#define VEEAM_ZEROSNAPDATA_OFF 0
#define VEEAM_ZEROSNAPDATA_ON 1
int get_zerosnapdata( void );
int get_snapstore_block_size_pow(void);
int inc_snapstore_block_size_pow(void);
int get_change_tracking_block_size_pow(void);
#define FIXFLAG_RH6_SPINLOCK 1 //https://www.veeam.com/kb2786
unsigned int get_fixflags(void);
#define SNAPDATA_ZEROED
#define CBT_BLOCK_SIZE_DEGREE get_change_tracking_block_size_pow()
#define CBT_BLOCK_SIZE (1<<CBT_BLOCK_SIZE_DEGREE)
#define COW_BLOCK_SIZE_DEGREE get_snapstore_block_size_pow()
#define COW_BLOCK_SIZE (1<<COW_BLOCK_SIZE_DEGREE)
#define SNAPSTORE_BLK_SHIFT (sector_t)(COW_BLOCK_SIZE_DEGREE - SECTOR_SHIFT)
#define SNAPSTORE_BLK_SIZE (sector_t)(1 << SNAPSTORE_BLK_SHIFT)
#define SNAPSTORE_BLK_MASK (sector_t)(SNAPSTORE_BLK_SIZE-1)
//#define VEEAM_IOCTL_LOGGING
#define SNAPSTORE_MULTIDEV
#define PERSISTENT_CBT
//#define DEBUG_CBT_LOAD 0x5A5A3CE1 // only for debugging
////Persistent CBT is not supported for SLES 11
// #if defined(DISTRIB_NAME_SLES) && defined(DISTRIB_VERSION_1)
// #if DISTRIB_VERSION_1 == 11
// #undef PERSISTENT_CBT
// #endif
// #endif
//#define VEEAMSNAP_SYSFS_PARAMS
//#define SNAPIMAGE_TRACER
#endif /* STDAFX_H_ */
Zerion Mini Shell 1.0