btrfs-progs: send-stream: track the read position in the stream

[platform/upstream/btrfs-progs.git] / kerncompat.h

diff --git a/kerncompat.h b/kerncompat.h
index ee65aa7..ed9a042 100644 (file)
--- a/kerncompat.h
+++ b/kerncompat.h
@@ -55,7 +55,8 @@
 #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
@@ -67,12 +68,20 @@
 #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);
@@ -84,12 +93,13 @@ static inline void assert_trace(const char *assertion, const char *filename,
        if (val)
                return;
        if (assertion)
-               fprintf(stderr, "%s:%d: %s: Assertion `%s` failed.\n",
-                       filename, line, func, assertion);
+               fprintf(stderr, "%s:%d: %s: Assertion `%s` failed, value %d\n",
+                       filename, line, func, assertion, val);
        else
-               fprintf(stderr, "%s:%d: %s: Assertion failed.\n", filename,
-                       line, func);
+               fprintf(stderr, "%s:%d: %s: Assertion failed, value %d.\n",
+                       filename, line, func, val);
        print_trace();
+       abort();
        exit(1);
 }
 
@@ -98,6 +108,27 @@ static inline void assert_trace(const char *assertion, const char *filename,
 #define BUG() assert(0)
 #endif
 
+static inline void warning_trace(const char *assertion, const char *filename,
+                             const char *func, unsigned line, int val,
+                             int trace)
+{
+       if (val)
+               return;
+       if (assertion)
+               fprintf(stderr,
+                       "%s:%d: %s: Warning: assertion `%s` failed, value %d\n",
+                       filename, line, func, assertion, val);
+       else
+               fprintf(stderr,
+                       "%s:%d: %s: Warning: assertion failed, value %d.\n",
+                       filename, line, func, val);
+#ifndef BTRFS_DISABLE_BACKTRACE
+       if (trace)
+               print_trace();
+#endif
+}
+
+
 #ifdef __CHECKER__
 #define __force    __attribute__((force))
 #define __bitwise__ __attribute__((bitwise))
@@ -269,12 +300,12 @@ static inline long IS_ERR(const void *ptr)
 
 #ifndef BTRFS_DISABLE_BACKTRACE
 #define BUG_ON(c) assert_trace(#c, __FILE__, __func__, __LINE__, !(c))
+#define WARN_ON(c) warning_trace(#c, __FILE__, __func__, __LINE__, !(c), 1)
 #else
 #define BUG_ON(c) assert(!(c))
+#define WARN_ON(c) warning_trace(#c, __FILE__, __func__, __LINE__, !(c), 0)
 #endif
 
-#define WARN_ON(c) BUG_ON(c)
-
 #ifndef BTRFS_DISABLE_BACKTRACE
 #define        ASSERT(c) assert_trace(#c, __FILE__, __func__, __LINE__, (c))
 #else
@@ -334,13 +365,21 @@ 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