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/*
* PgBouncer - Lightweight connection pooler for PostgreSQL.
*
* Copyright (c) 2007-2009 Marko Kreen, Skype Technologies OÜ
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/*
* Required system headers
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#ifdef WIN32
#include "win32support.h"
#endif
/* glibc is useless without it */
#define _GNU_SOURCE
#include <errno.h>
#include <sys/types.h>
#include <sys/time.h>
#include <sys/stat.h>
#ifdef HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
#ifdef HAVE_SYS_UN_H
#include <sys/un.h>
#endif
#ifdef HAVE_NETINET_IN_H
#include <netinet/in.h>
#endif
#ifdef HAVE_NETINET_TCP_H
#include <netinet/tcp.h>
#endif
#ifdef HAVE_ARPA_INET_H
#include <arpa/inet.h>
#endif
#ifdef HAVE_ARPA_INET_H
#include <sys/resource.h>
#endif
#include <time.h>
#include <fcntl.h>
#include <unistd.h>
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdarg.h>
#include <ctype.h>
#include <limits.h>
#ifdef HAVE_INTTYPES_H
#include <inttypes.h>
#endif
#ifdef HAVE_STDINT_H
#include <stdint.h>
#endif
#ifdef HAVE_CRYPT_H
#include <crypt.h>
#endif
#ifdef HAVE_LIBGEN_H
#include <libgen.h>
#endif
#ifdef HAVE_SYS_UIO_H
#include <sys/uio.h>
#endif
/* how to specify array with unknown length */
#if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L)
#define FLEX_ARRAY
#elif defined(__GNUC__)
#define FLEX_ARRAY
#else
#define FLEX_ARRAY 1
#endif
#if defined(__GNUC__) && (__GNUC__ >= 4)
/* gcc has hew positive aspects too */
#define _MUSTCHECK __attribute__((warn_unused_result))
#define _DEPRECATED __attribute__((deprecated))
#define _PRINTF(fmtpos, argpos) __attribute__((format(printf, fmtpos, argpos)))
#define _MALLOC __attribute__((malloc))
/* those do not seem to work well */
#define unlikely(x) __builtin_expect(!!(x), 0)
#define likely(x) __builtin_expect(!!(x), 1)
#else
#define _MUSTCHECK
#define _DEPRECATED
#define _PRINTF(x,y)
#define _MALLOC
#define unlikely(x) x
#define likely(x) x
#endif
/* cant use assert() as we want to log too */
#ifdef CASSERT
#define Assert(e) \
do { \
if (unlikely(!(e))) { \
fatal_noexit("Assert(%s) failed", #e); \
abort(); \
} \
} while (0)
#else
#define Assert(e)
#endif
#ifndef UNIX_PATH_MAX
#define UNIX_PATH_MAX 128 /* actual sizeof() will be applied later anyway */
#endif
/* how many microseconds in a second */
#define USEC (1000000LL)
typedef uint64_t usec_t;
/*
* bool type.
*/
typedef unsigned char bool;
#define false 0
#define true 1
/*
* PostgreSQL type OIDs for resultsets.
*/
#define INT8OID 20
#define INT4OID 23
#define TEXTOID 25
/*
* Make sure __func__ works.
*/
#ifndef HAVE_FUNCNAME__FUNC
#define __func__ __FUNCTION__
#endif
/*
* Some systems (Solaris) does not define INADDR_NONE
*/
#ifndef INADDR_NONE
#define INADDR_NONE ((unsigned long) -1)
#endif
/*
* libc compat functions.
*/
#ifndef HAVE_STRLCPY
size_t strlcpy(char *dst, const char *src, size_t n) _MUSTCHECK;
#endif
#ifndef HAVE_STRLCAT
size_t strlcat(char *dst, const char *src, size_t n) _MUSTCHECK;
#endif
#ifndef HAVE_GETPEEREID
int getpeereid(int fd, uid_t *uid_p, gid_t *gid_p) _MUSTCHECK;
#endif
#ifndef HAVE_BASENAME
const char *basename(const char *path);
#endif
#ifndef HAVE_CRYPT
static inline char *crypt(const char *p, const char *s) { return NULL; }
#endif
#ifndef HAVE_INET_NTOP
const char *inet_ntop(int af, const void *src, char *dst, socklen_t cnt);
#endif
#ifndef HAVE_LSTAT
static inline int lstat(const char *path, struct stat *st) { return stat(path, st); }
#endif
/* libevent 1.3 does not have event_loopbreak() */
#ifndef HAVE_EVENT_LOOPBREAK
static inline void event_loopbreak(void) { }
#endif
void change_user(const char *user);
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