* Boston, MA 021110-1307, USA.
*/
-#ifndef __KERNCOMPAT
-#define __KERNCOMPAT
+#ifndef __KERNCOMPAT_H__
+#define __KERNCOMPAT_H__
+
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <endian.h>
#include <byteswap.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 GFP_NOFS 0
#define __read_mostly
#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
+
+#ifndef ULONG_MAX
#define ULONG_MAX (~0UL)
-#define BUG() abort()
+#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];
+ int size;
+
+ size = backtrace(array, MAX_BACKTRACE);
+ backtrace_symbols_fd(array, size, 2);
+}
+#endif
+
+static inline void warning_trace(const char *assertion, const char *filename,
+ const char *func, unsigned line, long val)
+{
+ if (!val)
+ return;
+ fprintf(stderr,
+ "%s:%d: %s: Warning: assertion `%s` failed, value %ld\n",
+ filename, line, func, assertion, val);
+#ifndef BTRFS_DISABLE_BACKTRACE
+ print_trace();
+#endif
+}
+
+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))
#define __bitwise__ __attribute__((bitwise))
#endif
#ifndef __CHECKER__
+/*
+ * Since we're using primitive definitions from kernel-space, we need to
+ * define __KERNEL__ so that system header files know which definitions
+ * to use.
+ */
+#define __KERNEL__
#include <asm/types.h>
typedef __u32 u32;
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...
+ */
+#undef __KERNEL__
#else
typedef unsigned int u32;
typedef unsigned int __u32;
typedef unsigned long long u64;
typedef unsigned char u8;
typedef unsigned short u16;
+typedef long long s64;
+typedef int s32;
#endif
#define BITOP_MASK(nr) (1UL << ((nr) % BITS_PER_LONG))
#define BITOP_WORD(nr) ((nr) / BITS_PER_LONG)
+#ifndef __attribute_const__
+#define __attribute_const__ __attribute__((__const__))
+#endif
+
/**
* __set_bit - Set a bit in memory
* @nr: the bit to set
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);
}
+static inline int IS_ERR_OR_NULL(const void *ptr)
+{
+ return !ptr || IS_ERR(ptr);
+}
+
/*
- * max/min macro
+ * 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
+ * arguments just once each.
*/
-#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; })
+#define __round_mask(x, y) ((__typeof__(x))((y)-1))
+#define round_up(x, y) ((((x)-1) | __round_mask(x, y))+1)
+#define round_down(x, y) ((x) & ~__round_mask(x, y))
/*
* printk
#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)
-#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)
+#ifndef BTRFS_DISABLE_BACKTRACE
+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
+ print_trace();
+#endif
+ abort();
+ exit(1);
+}
+#define ASSERT(c) assert_trace(#c, __FILE__, __func__, __LINE__, (long)(c))
#else
-#define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
+#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 __CHECK_ENDIAN__
#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;
#define cpu_to_le16(x) ((__force __le16)(u16)(x))
#define le16_to_cpu(x) ((__force u16)(__le16)(x))
#endif
+
+struct __una_u16 { __le16 x; } __attribute__((__packed__));
+struct __una_u32 { __le32 x; } __attribute__((__packed__));
+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
projects / platform / upstream / btrfs-progs.git / blobdiff