include/common.h

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/*
 *   $Id: common.h 47 2010-11-24 01:59:04Z julianthome $
 *
 *   pam_netns - Linux-PAM module for instantiating session network namespaces
 *
 *   Copyright (C) 2010 Wilhelm Meier (wilhelm.meier@informatik.fh-kl.de)
 *
 *   This program is free software; you can redistribute it and/or modify it under the terms of
 *   the GNU General Public License as published by the Free Software Foundation;
 *   either version 3 of the License, or (at your option) any later version.
 *
 *   This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
 *   without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 *   See the GNU General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License along with this program;
 *   if not, see <http://www.gnu.org/licenses/>.
 */

#ifndef COMMON_H
#define COMMON_H

// we require POSIX 200809 compytibility

#define _POSIX_C_SOURCE 200809L
#ifndef _XOPEN_SOURCE
#define _XOPEN_SOURCE   700
#endif

#ifndef UNIX_PATH_MAX
#define UNIX_PATH_MAX 108       // see <linux/un.h>
#endif

// needed for unshare()
#define _BSD_SOURCE
#define _GNU_SOURCE
#include <unistd.h>
#include <limits.h>
#include <time.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <fcntl.h>
#include <pwd.h>
#include <string.h>
#include <signal.h>
#include <errno.h>
#include <syslog.h>
#include <sys/select.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <sys/utsname.h>
#include <sys/stat.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <dirent.h>
#include <sched.h>
#include <stddef.h>
#include <stdbool.h>
#include <assert.h>

#include <libintl.h>
#include <locale.h>

#if defined(_POSIX_THREADS) && ((_POSIX_THREADS - 0) >= 0)
#include <pthread.h>
#endif

#if (_POSIX_MAPPED_FILES - 0) >= 0 || (_POSIX_SHARED_MEMORY_OBJECTS - 0) >= 0 || \
(_POSIX_MEMLOCK - 0) >= 0 || (_POSIX_MEMORY_PROTECTION - 0) >= 0 || \
(_POSIX_TYPED_MEMORY_OBJECTS - 0) >= 0 || (_POSIX_SYNCHRONIZED_IO - 0) >= 0 || \
(_POSIX_ADVISORY_INFO - 0) >= 0
#include <sys/mman.h>
#endif

#if (_POSIX_MAPPED_FILES - 0) >= 0 || (_POSIX_SHARED_MEMORY_OBJECTS - 0) >= 0 || \
(_POSIX_TYPED_MEMORY_OBJECTS - 0) >= 0
#define _MC3                    /* see POSIX Standard margin notes */
#endif

#if defined(_POSIX_MESSAGE_PASSING) && ((_POSIX_MESSAGE_PASSING - 0) >= 0)
#include <mqueue.h>
#endif

#ifdef _XOPEN_UNIX
#include <strings.h>
#include <utmpx.h>
#include <sys/resource.h>
#include <sys/uio.h>
#include <sys/time.h>
#include <sys/shm.h>
#include <sys/ipc.h>
#include <sys/sem.h>
#include <sys/msg.h>
#ifndef CYGWIN
#include <ftw.h>
#endif
#endif

#define PIPE_READ 0
#define PIPE_WRITE 1

#ifdef _NO_PAM_SYSLOG
#define logdbg(...)                     syslog(LOG_AUTHPRIV | LOG_DEBUG, __VA_ARGS__)
#define loginfo(...)                    syslog(LOG_AUTHPRIV | LOG_INFO, __VA_ARGS__)
#define logerr(...)                     syslog(LOG_AUTHPRIV | LOG_ERR, __VA_ARGS__ )

#else

#define logdbg(...)                     if ( pam_netns_options.debug != 0 ) \
                                                 pam_syslog(pam_netns_options.pamh, LOG_DEBUG, __VA_ARGS__)
#define loginfo(...)                    pam_syslog(pam_netns_options.pamh, LOG_INFO, __VA_ARGS__)
#define logerr(...)                     pam_syslog(pam_netns_options.pamh, LOG_ERR, __VA_ARGS__ )
#endif
typedef struct ucred ucred_t;

#ifndef UNUSED
#ifdef __GNUC__
#define UNUSED __attribute__ ((unused))
#else
#define UNUSED
#endif
#endif

#endif