* Boston, MA 021110-1307, USA.
*/
-#ifndef __KERNCOMPAT
-#define __KERNCOMPAT
+#ifndef __KERNCOMPAT_H__
+#define __KERNCOMPAT_H__
#include <stdio.h>
#include <stdlib.h>
#include <assert.h>
#include <stddef.h>
#include <linux/types.h>
+#include <stdint.h>
+
+#include <features.h>
+
+#ifndef __GLIBC__
+#ifndef BTRFS_DISABLE_BACKTRACE
+#define BTRFS_DISABLE_BACKTRACE
+#endif
+#define __always_inline __inline __attribute__ ((__always_inline__))
+#endif
+
+#ifndef BTRFS_DISABLE_BACKTRACE
+#include <execinfo.h>
+#endif
+
+#define ptr_to_u64(x) ((u64)(uintptr_t)x)
+#define u64_to_ptr(x) ((void *)(uintptr_t)x)
#ifndef READ
#define READ 0
#define gfp_t int
#define get_cpu_var(p) (p)
#define __get_cpu_var(p) (p)
-#define BITS_PER_LONG (__SIZEOF_LONG__ * 8)
+#define BITS_PER_BYTE 8
+#define BITS_PER_LONG (__SIZEOF_LONG__ * BITS_PER_BYTE)
#define __GFP_BITS_SHIFT 20
#define __GFP_BITS_MASK ((int)((1 << __GFP_BITS_SHIFT) - 1))
#define GFP_KERNEL 0
#define ULONG_MAX (~0UL)
#endif
+#ifndef BTRFS_DISABLE_BACKTRACE
+#define MAX_BACKTRACE 16
+static inline void print_trace(void)
+{
+ void *array[MAX_BACKTRACE];
+ int size;
+
+ size = backtrace(array, MAX_BACKTRACE);
+ backtrace_symbols_fd(array, size, 2);
+}
+
+static inline void assert_trace(const char *assertion, const char *filename,
+ const char *func, unsigned line, int val)
+{
+ if (val)
+ return;
+ if (assertion)
+ fprintf(stderr, "%s:%d: %s: Assertion `%s` failed.\n",
+ filename, line, func, assertion);
+ else
+ fprintf(stderr, "%s:%d: %s: Assertion failed.\n", filename,
+ line, func);
+ print_trace();
+ exit(1);
+}
+
+#define BUG() assert_trace(NULL, __FILE__, __func__, __LINE__, 0)
+#else
#define BUG() assert(0)
+#endif
+
#ifdef __CHECKER__
#define __force __attribute__((force))
#define __bitwise__ __attribute__((bitwise))
typedef __u64 u64;
typedef __u16 u16;
typedef __u8 u8;
+typedef __s64 s64;
+typedef __s32 s32;
+
/*
* Continuing to define __KERNEL__ breaks others parts of the code, so
* we can just undefine it now that we have the correct headers...
typedef unsigned long long u64;
typedef unsigned char u8;
typedef unsigned short u16;
+typedef long long s64;
+typedef int s32;
#endif
}
/*
- * 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; })
-
-/*
* This looks more complex than it should be. But we need to
* get the type for the ~ right in round_down (it needs to be
* as wide as the result!), and we want to evaluate the macro
#define kzalloc(x, y) calloc(1, x)
#define kstrdup(x, y) strdup(x)
#define kfree(x) free(x)
+#define vmalloc(x) malloc(x)
+#define vfree(x) free(x)
+#ifndef BTRFS_DISABLE_BACKTRACE
+#define BUG_ON(c) assert_trace(#c, __FILE__, __func__, __LINE__, !(c))
+#else
#define BUG_ON(c) assert(!(c))
-#define WARN_ON(c) assert(!(c))
-#define ASSERT(c) assert(c)
+#endif
+
+#define WARN_ON(c) BUG_ON(c)
+
+#ifndef BTRFS_DISABLE_BACKTRACE
+#define ASSERT(c) assert_trace(#c, __FILE__, __func__, __LINE__, (c))
+#else
+#define ASSERT(c) assert(c)
+#endif
#define container_of(ptr, type, member) ({ \
const typeof( ((type *)0)->member ) *__mptr = (ptr); \
#define __bitwise
#endif
+/* Alignment check */
+#define IS_ALIGNED(x, a) (((x) & ((typeof(x))(a) - 1)) == 0)
+
+static inline int is_power_of_2(unsigned long n)
+{
+ return (n != 0 && ((n & (n - 1)) == 0));
+}
+
typedef u16 __bitwise __le16;
typedef u16 __bitwise __be16;
typedef u32 __bitwise __le32;
struct __una_u64 { __le64 x; } __attribute__((__packed__));
#define get_unaligned_le8(p) (*((u8 *)(p)))
+#define get_unaligned_8(p) (*((u8 *)(p)))
#define put_unaligned_le8(val,p) ((*((u8 *)(p))) = (val))
+#define put_unaligned_8(val,p) ((*((u8 *)(p))) = (val))
#define get_unaligned_le16(p) le16_to_cpu(((const struct __una_u16 *)(p))->x)
+#define get_unaligned_16(p) (((const struct __una_u16 *)(p))->x)
#define put_unaligned_le16(val,p) (((struct __una_u16 *)(p))->x = cpu_to_le16(val))
+#define put_unaligned_16(val,p) (((struct __una_u16 *)(p))->x = (val))
#define get_unaligned_le32(p) le32_to_cpu(((const struct __una_u32 *)(p))->x)
+#define get_unaligned_32(p) (((const struct __una_u32 *)(p))->x)
#define put_unaligned_le32(val,p) (((struct __una_u32 *)(p))->x = cpu_to_le32(val))
+#define put_unaligned_32(val,p) (((struct __una_u32 *)(p))->x = (val))
#define get_unaligned_le64(p) le64_to_cpu(((const struct __una_u64 *)(p))->x)
+#define get_unaligned_64(p) (((const struct __una_u64 *)(p))->x)
#define put_unaligned_le64(val,p) (((struct __una_u64 *)(p))->x = cpu_to_le64(val))
+#define put_unaligned_64(val,p) (((struct __una_u64 *)(p))->x = (val))
+
+#ifndef true
+#define true 1
+#define false 0
#endif
#ifndef noinline
#define noinline
#endif
+
+#endif