/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/

#pragma once

/***
  This file is part of systemd.

  Copyright 2010 Lennart Poettering

  systemd is free software; you can redistribute it and/or modify it
  under the terms of the GNU Lesser General Public License as published by
  the Free Software Foundation; either version 2.1 of the License, or
  (at your option) any later version.

  systemd 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
  Lesser General Public License for more details.

  You should have received a copy of the GNU Lesser General Public License
  along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/

/* Missing glibc definitions to access certain kernel APIs */

#include <sys/resource.h>
#include <sys/syscall.h>
#include <fcntl.h>
#include <stdlib.h>
#include <unistd.h>
#include <linux/oom.h>

#include "macro.h"
#include "config.h"

#ifdef ARCH_MIPS
#include <asm/sgidefs.h>
#endif

#ifndef RLIMIT_RTTIME
#define RLIMIT_RTTIME 15
#endif

#ifndef MS_PRIVATE
#define MS_PRIVATE  (1 << 18)
#endif

#ifndef MS_REC
#define MS_REC 16384
#endif

#if !HAVE_DECL_GETTID
static inline pid_t gettid(void) {
        return (pid_t) syscall(SYS_gettid);
}
#endif

#ifndef MAX_HANDLE_SZ
#define MAX_HANDLE_SZ 128
#endif

#if defined __x86_64__
#  ifndef __NR_name_to_handle_at
#    define __NR_name_to_handle_at 303
#  endif
#elif defined __i386__
#  ifndef __NR_name_to_handle_at
#    define __NR_name_to_handle_at 341
#  endif
#elif defined __arm__
#  ifndef __NR_name_to_handle_at
#    define __NR_name_to_handle_at 370
#  endif
#elif defined __powerpc__
#  ifndef __NR_name_to_handle_at
#    define __NR_name_to_handle_at 345
#  endif
#else
#  ifndef __NR_name_to_handle_at
#    error __NR_name_to_handle_at is not defined
#  endif
#endif

#if !HAVE_DECL_NAME_TO_HANDLE_AT
struct file_handle {
        unsigned int handle_bytes;
        int handle_type;
        unsigned char f_handle[0];
};

static inline int name_to_handle_at(int fd, const char *name, struct file_handle *handle, int *mnt_id, int flags) {
        return syscall(__NR_name_to_handle_at, fd, name, handle, mnt_id, flags);
}
#endif