mirror of
https://github.com/kdave/btrfs-progs
synced 2024-12-25 15:42:23 +00:00
db6772f4d3
Define BUG_ON and WARN_ON as assert for easy debugging. Signed-off-by: Shen Feng <shen@cn.fujitsu.com>
258 lines
6.0 KiB
C
258 lines
6.0 KiB
C
/*
|
|
* Copyright (C) 2007 Oracle. All rights reserved.
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public
|
|
* License v2 as published by the Free Software Foundation.
|
|
*
|
|
* 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., 59 Temple Place - Suite 330,
|
|
* Boston, MA 021110-1307, USA.
|
|
*/
|
|
|
|
#ifndef __KERNCOMPAT
|
|
#define __KERNCOMPAT
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <errno.h>
|
|
#include <string.h>
|
|
#include <endian.h>
|
|
#include <byteswap.h>
|
|
#include <assert.h>
|
|
|
|
#ifndef READ
|
|
#define READ 0
|
|
#define WRITE 1
|
|
#define READA 2
|
|
#endif
|
|
|
|
#define gfp_t int
|
|
#define get_cpu_var(p) (p)
|
|
#define __get_cpu_var(p) (p)
|
|
#define BITS_PER_LONG (sizeof(long) * 8)
|
|
#define __GFP_BITS_SHIFT 20
|
|
#define __GFP_BITS_MASK ((int)((1 << __GFP_BITS_SHIFT) - 1))
|
|
#define GFP_KERNEL 0
|
|
#define GFP_NOFS 0
|
|
#define __read_mostly
|
|
#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
|
|
#define ULONG_MAX (~0UL)
|
|
#define BUG() abort()
|
|
#ifdef __CHECKER__
|
|
#define __force __attribute__((force))
|
|
#define __bitwise__ __attribute__((bitwise))
|
|
#else
|
|
#define __force
|
|
#define __bitwise__
|
|
#endif
|
|
|
|
#ifndef __CHECKER__
|
|
#include <asm/types.h>
|
|
typedef __u32 u32;
|
|
typedef __u64 u64;
|
|
typedef __u16 u16;
|
|
typedef __u8 u8;
|
|
#else
|
|
typedef unsigned int u32;
|
|
typedef unsigned int __u32;
|
|
typedef unsigned long long u64;
|
|
typedef unsigned char u8;
|
|
typedef unsigned short u16;
|
|
#endif
|
|
|
|
|
|
struct vma_shared { int prio_tree_node; };
|
|
struct vm_area_struct {
|
|
unsigned long vm_pgoff;
|
|
unsigned long vm_start;
|
|
unsigned long vm_end;
|
|
struct vma_shared shared;
|
|
};
|
|
|
|
struct page {
|
|
unsigned long index;
|
|
};
|
|
|
|
struct mutex {
|
|
unsigned long lock;
|
|
};
|
|
|
|
#define mutex_init(m) \
|
|
do { \
|
|
(m)->lock = 1; \
|
|
} while (0)
|
|
|
|
static inline void mutex_lock(struct mutex *m)
|
|
{
|
|
m->lock--;
|
|
}
|
|
|
|
static inline void mutex_unlock(struct mutex *m)
|
|
{
|
|
m->lock++;
|
|
}
|
|
|
|
static inline int mutex_is_locked(struct mutex *m)
|
|
{
|
|
return (m->lock != 1);
|
|
}
|
|
|
|
#define cond_resched() do { } while (0)
|
|
#define preempt_enable() do { } while (0)
|
|
#define preempt_disable() do { } while (0)
|
|
|
|
#define BITOP_MASK(nr) (1UL << ((nr) % BITS_PER_LONG))
|
|
#define BITOP_WORD(nr) ((nr) / BITS_PER_LONG)
|
|
|
|
/**
|
|
* __set_bit - Set a bit in memory
|
|
* @nr: the bit to set
|
|
* @addr: the address to start counting from
|
|
*
|
|
* Unlike set_bit(), this function is non-atomic and may be reordered.
|
|
* If it's called on the same region of memory simultaneously, the effect
|
|
* may be that only one operation succeeds.
|
|
*/
|
|
static inline void __set_bit(int nr, volatile unsigned long *addr)
|
|
{
|
|
unsigned long mask = BITOP_MASK(nr);
|
|
unsigned long *p = ((unsigned long *)addr) + BITOP_WORD(nr);
|
|
|
|
*p |= mask;
|
|
}
|
|
|
|
static inline void __clear_bit(int nr, volatile unsigned long *addr)
|
|
{
|
|
unsigned long mask = BITOP_MASK(nr);
|
|
unsigned long *p = ((unsigned long *)addr) + BITOP_WORD(nr);
|
|
|
|
*p &= ~mask;
|
|
}
|
|
|
|
/**
|
|
* test_bit - Determine whether a bit is set
|
|
* @nr: bit number to test
|
|
* @addr: Address to start counting from
|
|
*/
|
|
static inline int test_bit(int nr, const volatile unsigned long *addr)
|
|
{
|
|
return 1UL & (addr[BITOP_WORD(nr)] >> (nr & (BITS_PER_LONG-1)));
|
|
}
|
|
|
|
/*
|
|
* error pointer
|
|
*/
|
|
#define MAX_ERRNO 4095
|
|
#define IS_ERR_VALUE(x) ((x) >= (unsigned long)-MAX_ERRNO)
|
|
|
|
static inline void *ERR_PTR(long error)
|
|
{
|
|
return (void *) error;
|
|
}
|
|
|
|
static inline long PTR_ERR(const void *ptr)
|
|
{
|
|
return (long) ptr;
|
|
}
|
|
|
|
static inline long IS_ERR(const void *ptr)
|
|
{
|
|
return IS_ERR_VALUE((unsigned long)ptr);
|
|
}
|
|
|
|
/*
|
|
* max/min macro
|
|
*/
|
|
#define min(x,y) ({ \
|
|
typeof(x) _x = (x); \
|
|
typeof(y) _y = (y); \
|
|
(void) (&_x == &_y); \
|
|
_x < _y ? _x : _y; })
|
|
|
|
#define max(x,y) ({ \
|
|
typeof(x) _x = (x); \
|
|
typeof(y) _y = (y); \
|
|
(void) (&_x == &_y); \
|
|
_x > _y ? _x : _y; })
|
|
|
|
#define min_t(type,x,y) \
|
|
({ type __x = (x); type __y = (y); __x < __y ? __x: __y; })
|
|
#define max_t(type,x,y) \
|
|
({ type __x = (x); type __y = (y); __x > __y ? __x: __y; })
|
|
|
|
/*
|
|
* printk
|
|
*/
|
|
#define printk(fmt, args...) fprintf(stderr, fmt, ##args)
|
|
#define KERN_CRIT ""
|
|
|
|
/*
|
|
* kmalloc/kfree
|
|
*/
|
|
#define kmalloc(x, y) malloc(x)
|
|
#define kzalloc(x, y) calloc(1, x)
|
|
#define kstrdup(x, y) strdup(x)
|
|
#define kfree(x) free(x)
|
|
|
|
#define BUG_ON(c) assert(!(c))
|
|
#define WARN_ON(c) assert(!(c))
|
|
|
|
#undef offsetof
|
|
#ifdef __compiler_offsetof
|
|
#define offsetof(TYPE,MEMBER) __compiler_offsetof(TYPE,MEMBER)
|
|
#else
|
|
#define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
|
|
#endif
|
|
|
|
#define container_of(ptr, type, member) ({ \
|
|
const typeof( ((type *)0)->member ) *__mptr = (ptr); \
|
|
(type *)( (char *)__mptr - offsetof(type,member) );})
|
|
#ifdef __CHECKER__
|
|
#define __CHECK_ENDIAN__
|
|
#define __bitwise __bitwise__
|
|
#else
|
|
#define __bitwise
|
|
#endif
|
|
|
|
typedef u16 __bitwise __le16;
|
|
typedef u16 __bitwise __be16;
|
|
typedef u32 __bitwise __le32;
|
|
typedef u32 __bitwise __be32;
|
|
typedef u64 __bitwise __le64;
|
|
typedef u64 __bitwise __be64;
|
|
|
|
/* Macros to generate set/get funcs for the struct fields
|
|
* assume there is a lefoo_to_cpu for every type, so lets make a simple
|
|
* one for u8:
|
|
*/
|
|
#define le8_to_cpu(v) (v)
|
|
#define cpu_to_le8(v) (v)
|
|
#define __le8 u8
|
|
|
|
#if __BYTE_ORDER == __BIG_ENDIAN
|
|
#define cpu_to_le64(x) ((__force __le64)(u64)(bswap_64(x)))
|
|
#define le64_to_cpu(x) ((__force u64)(__le64)(bswap_64(x)))
|
|
#define cpu_to_le32(x) ((__force __le32)(u32)(bswap_32(x)))
|
|
#define le32_to_cpu(x) ((__force u32)(__le32)(bswap_32(x)))
|
|
#define cpu_to_le16(x) ((__force __le16)(u16)(bswap_16(x)))
|
|
#define le16_to_cpu(x) ((__force u16)(__le16)(bswap_16(x)))
|
|
#else
|
|
#define cpu_to_le64(x) ((__force __le64)(u64)(x))
|
|
#define le64_to_cpu(x) ((__force u64)(__le64)(x))
|
|
#define cpu_to_le32(x) ((__force __le32)(u32)(x))
|
|
#define le32_to_cpu(x) ((__force u32)(__le32)(x))
|
|
#define cpu_to_le16(x) ((__force __le16)(u16)(x))
|
|
#define le16_to_cpu(x) ((__force u16)(__le16)(x))
|
|
#endif
|
|
#endif
|
|
|
|
#ifndef noinline
|
|
#define noinline
|
|
#endif
|