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/*
* Copyright © 2020 Christian Persch
*
* This library 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 3 of the License, or
* (at your option) any later version.
*
* This library 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 this library. If not, see <https://www.gnu.org/licenses/>.
*/
#pragma once
/* NOTE: This file must be included *after all other includes*. */
#include <csignal>
#include <fcntl.h>
#include <unistd.h>
#ifdef __linux__
#include <sys/ioctl.h>
#include <sys/syscall.h>
#if __has_include(<linux/close_range.h>)
#include <linux/close_range.h>
#endif
#if defined(__mips__) || defined(__mips64__)
#include <asm/sgidefs.h>
#endif
#endif
/* NSIG isn't in POSIX, so if it doesn't exist use this here. See bug #759196 */
#ifndef NSIG
#define NSIG (8 * sizeof(sigset_t))
#endif
#if !HAVE_FDWALK
int fdwalk(int (*cb)(void* data, int fd),
void* data);
#endif
#if !HAVE_STRCHRNUL
char* strchrnul(char const* s,
int c);
#endif
#if !HAVE_CLOSE_RANGE
int close_range(unsigned int first,
unsigned int last,
unsigned int flags);
#endif
#ifdef __linux__
/* BEGIN
* The following is copied from systemd/src/basic/missing_syscall_def.h (LGPL2.1+)
*/
#ifndef __NR_close_range
# if defined(__aarch64__)
# define __NR_close_range 436
# elif defined(__alpha__)
# define __NR_close_range 546
# elif defined(__arc__) || defined(__tilegx__)
# define __NR_close_range 436
# elif defined(__arm__)
# define __NR_close_range 436
# elif defined(__i386__)
# define __NR_close_range 436
# elif defined(__ia64__)
# define __NR_close_range 1460
# elif defined(__m68k__)
# define __NR_close_range 436
# elif defined(_MIPS_SIM)
# if _MIPS_SIM == _MIPS_SIM_ABI32
# define __NR_close_range 4436
# elif _MIPS_SIM == _MIPS_SIM_NABI32
# define __NR_close_range 6436
# elif _MIPS_SIM == _MIPS_SIM_ABI64
# define __NR_close_range 5436
# else
# error "Unknown MIPS ABI"
# endif
# elif defined(__powerpc__)
# define __NR_close_range 436
# elif defined(__s390__)
# define __NR_close_range 436
# elif defined(__sparc__)
# define __NR_close_range 436
# elif defined(__x86_64__)
# if defined(__ILP32__)
# define __NR_close_range (436 | /* __X32_SYSCALL_BIT */ 0x40000000)
# else
# define __NR_close_range 436
# endif
# else
# warning "close_range() syscall number is unknown for your architecture"
# endif
#endif /* !__NR_close_range */
/* The following is copied from systemd/src/basic/missing_fcntl.h (LGPL2.1+) */
/* The precise definition of __O_TMPFILE is arch specific; use the
* values defined by the kernel (note: some are hexa, some are octal,
* duplicated as-is from the kernel definitions):
* - alpha, parisc, sparc: each has a specific value;
* - others: they use the "generic" value.
*/
#ifndef __O_TMPFILE
#if defined(__alpha__)
#define __O_TMPFILE 0100000000
#elif defined(__parisc__) || defined(__hppa__)
#define __O_TMPFILE 0400000000
#elif defined(__sparc__) || defined(__sparc64__)
#define __O_TMPFILE 0x2000000
#else
#define __O_TMPFILE 020000000
#endif
#endif
/* a horrid kludge trying to make sure that this will fail on old kernels */
#ifndef O_TMPFILE
#define O_TMPFILE (__O_TMPFILE | O_DIRECTORY)
#endif
/* END copied from systemd */
#if !defined(SYS_close_range) && defined(__NR_close_range)
#define SYS_close_range __NR_close_range
#endif
#ifndef CLOSE_RANGE_CLOEXEC
#define CLOSE_RANGE_CLOEXEC (1u << 2)
#endif
#if !defined(TIOCGPTPEER)
/* See linux commit 54ebbfb1603415d9953c150535850d30609ef077 */
#if defined(__sparc__)
#define TIOCGPTPEER _IOR('t', 137, int)
#else
#define TIOCGPTPEER _IOR('T', 0x41, int)
#endif
#endif /* !TIOCGPTPEER */
#endif /* __linux__ */
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