/*
- * Copyright (c) 2007-2010 Niels Provos and Nick Mathewson
+ * Copyright (c) 2007-2012 Niels Provos and Nick Mathewson
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
#endif
#include "event2/util.h"
+#include "ipv6-internal.h"
+
#ifdef __cplusplus
extern "C" {
#endif
/* A good no-op to use in macro definitions. */
#define _EVUTIL_NIL_STMT ((void)0)
-/* Suppresses the compiler's "unused variable" warnings for unused assert. */
+/* A no-op that tricks the compiler into thinking a condition is used while
+ * definitely not making any code for it. Used to compile out asserts while
+ * avoiding "unused variable" warnings. The "!" forces the compiler to
+ * do the sizeof() on an int, in case "condition" is a bitfield value.
+ */
#define _EVUTIL_NIL_CONDITION(condition) do { \
- (void)sizeof(condition); \
+ (void)sizeof(!(condition)); \
} while(0)
/* Internal use only: macros to match patterns of error codes in a
#define EVUTIL_UPCAST(ptr, type, field) \
((type *)(((char*)(ptr)) - evutil_offsetof(type, field)))
+/* As open(pathname, flags, mode), except that the file is always opened with
+ * the close-on-exec flag set. (And the mode argument is mandatory.)
+ */
+int evutil_open_closeonexec(const char *pathname, int flags, unsigned mode);
+
int evutil_read_file(const char *filename, char **content_out, size_t *len_out,
int is_binary);
/* Evaluates to the same boolean value as 'p', and hints to the compiler that
* we expect this value to be false. */
-#ifdef __GNUC__
+#if defined(__GNUC__) && __GNUC__ >= 3 /* gcc 3.0 or later */
#define EVUTIL_UNLIKELY(p) __builtin_expect(!!(p),0)
#else
#define EVUTIL_UNLIKELY(p) (p)
#define EVUTIL_FAILURE_CHECK(cond) EVUTIL_UNLIKELY(cond)
#endif
+#ifndef _EVENT_HAVE_STRUCT_SOCKADDR_STORAGE
+/* Replacement for sockaddr storage that we can use internally on platforms
+ * that lack it. It is not space-efficient, but neither is sockaddr_storage.
+ */
+struct sockaddr_storage {
+ union {
+ struct sockaddr ss_sa;
+ struct sockaddr_in ss_sin;
+ struct sockaddr_in6 ss_sin6;
+ char ss_padding[128];
+ } ss_union;
+};
+#define ss_family ss_union.ss_sa.sa_family
+#endif
+
/* Internal addrinfo error code. This one is returned from only from
* evutil_getaddrinfo_common, when we are sure that we'll have to hit a DNS
* server. */
HANDLE evutil_load_windows_system_library(const TCHAR *library_name);
#endif
+#ifndef EV_SIZE_FMT
+#if defined(_MSC_VER) || defined(__MINGW32__) || defined(__MINGW64__)
+#define EV_U64_FMT "%I64u"
+#define EV_I64_FMT "%I64d"
+#define EV_I64_ARG(x) ((__int64)(x))
+#define EV_U64_ARG(x) ((unsigned __int64)(x))
+#else
+#define EV_U64_FMT "%llu"
+#define EV_I64_FMT "%lld"
+#define EV_I64_ARG(x) ((long long)(x))
+#define EV_U64_ARG(x) ((unsigned long long)(x))
+#endif
+#endif
+
+#if defined(__STDC__) && defined(__STDC_VERSION__)
+#if (__STDC_VERSION__ >= 199901L)
+#define EV_SIZE_FMT "%zu"
+#define EV_SSIZE_FMT "%zd"
+#define EV_SIZE_ARG(x) (x)
+#define EV_SSIZE_ARG(x) (x)
+#endif
+#endif
+
+#ifndef EV_SIZE_FMT
+#if (_EVENT_SIZEOF_SIZE_T <= _EVENT_SIZEOF_LONG)
+#define EV_SIZE_FMT "%lu"
+#define EV_SSIZE_FMT "%ld"
+#define EV_SIZE_ARG(x) ((unsigned long)(x))
+#define EV_SSIZE_ARG(x) ((long)(x))
+#else
+#define EV_SIZE_FMT EV_U64_FMT
+#define EV_SSIZE_FMT EV_I64_FMT
+#define EV_SIZE_ARG(x) EV_U64_ARG(x)
+#define EV_SSIZE_ARG(x) EV_I64_ARG(x)
+#endif
+#endif
+
#ifdef __cplusplus
}
#endif