* Boston, MA 021110-1307, USA.
*/
-#ifndef __KERNCOMPAT
-#define __KERNCOMPAT
+#ifndef __KERNCOMPAT_H__
+#define __KERNCOMPAT_H__
#include <stdio.h>
#include <stdlib.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 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
+#define __token_glue(a,b,c) ___token_glue(a,b,c)
+#define ___token_glue(a,b,c) a ## b ## c
+#ifdef DEBUG_BUILD_CHECKS
+#define BUILD_ASSERT(x) extern int __token_glue(compile_time_assert_,__LINE__,__COUNTER__)[1-2*!(x)] __attribute__((unused))
+#else
+#define BUILD_ASSERT(x)
+#endif
+
#ifndef BTRFS_DISABLE_BACKTRACE
#define MAX_BACKTRACE 16
static inline void print_trace(void)
{
void *array[MAX_BACKTRACE];
- size_t size;
+ int size;
size = backtrace(array, MAX_BACKTRACE);
backtrace_symbols_fd(array, size, 2);
}
+#endif
-static inline void assert_trace(const char *assertion, const char *filename,
- const char *func, unsigned line, int val)
+static inline void warning_trace(const char *assertion, const char *filename,
+ const char *func, unsigned line, long val)
{
- if (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);
+ fprintf(stderr,
+ "%s:%d: %s: Warning: assertion `%s` failed, value %ld\n",
+ filename, line, func, assertion, val);
+#ifndef BTRFS_DISABLE_BACKTRACE
print_trace();
- exit(1);
+#endif
}
-#define BUG() assert_trace(NULL, __FILE__, __func__, __LINE__, 0)
-#else
-#define BUG() assert(0)
+static inline void bugon_trace(const char *assertion, const char *filename,
+ const char *func, unsigned line, long val)
+{
+ if (!val)
+ return;
+ fprintf(stderr,
+ "%s:%d: %s: BUG_ON `%s` triggered, value %ld\n",
+ filename, line, func, assertion, val);
+#ifndef BTRFS_DISABLE_BACKTRACE
+ print_trace();
#endif
+ abort();
+ exit(1);
+}
#ifdef __CHECKER__
#define __force __attribute__((force))
typedef unsigned char u8;
typedef unsigned short u16;
typedef long long s64;
-typedef int s32
+typedef int s32;
#endif
return (long) ptr;
}
-static inline long IS_ERR(const void *ptr)
+static inline int 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; })
+static inline int IS_ERR_OR_NULL(const void *ptr)
+{
+ return !ptr || IS_ERR(ptr);
+}
/*
* This looks more complex than it should be. But we need to
#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))
-#endif
-
-#define WARN_ON(c) BUG_ON(c)
-
+static inline void assert_trace(const char *assertion, const char *filename,
+ const char *func, unsigned line, long val)
+{
+ if (val)
+ return;
+ fprintf(stderr,
+ "%s:%d: %s: Assertion `%s` failed, value %ld\n",
+ filename, line, func, assertion, val);
#ifndef BTRFS_DISABLE_BACKTRACE
-#define ASSERT(c) assert_trace(#c, __FILE__, __func__, __LINE__, (c))
+ print_trace();
+#endif
+ abort();
+ exit(1);
+}
+#define ASSERT(c) assert_trace(#c, __FILE__, __func__, __LINE__, (long)(c))
#else
#define ASSERT(c) assert(c)
#endif
+#define BUG_ON(c) bugon_trace(#c, __FILE__, __func__, __LINE__, (long)(c))
+#define BUG() BUG_ON(1)
+#define WARN_ON(c) warning_trace(#c, __FILE__, __func__, __LINE__, (long)(c))
+
#define container_of(ptr, type, member) ({ \
const typeof( ((type *)0)->member ) *__mptr = (ptr); \
(type *)( (char *)__mptr - offsetof(type,member) );})
+#ifndef __bitwise
#ifdef __CHECKER__
#define __bitwise __bitwise__
#else
#define __bitwise
-#endif
+#endif /* __CHECKER__ */
+#endif /* __bitwise */
+
+/* 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;
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))
-#endif
+#define put_unaligned_64(val,p) (((struct __una_u64 *)(p))->x = (val))
#ifndef true
#define true 1
#ifndef noinline
#define noinline
#endif
+
+#endif
projects / platform / upstream / btrfs-progs.git / blobdiff