text: // Copyright 2015 The Go Authors. All rights reserved.
  // Use of this source code is governed by a BSD-style
  // license that can be found in the LICENSE file.
  
  // +build arm64,linux
  
  package unix
  
  const _SYS_dup = SYS_DUP3
  
  //sys	Fchown(fd int, uid int, gid int) (err error)
  //sys	Fstat(fd int, stat *Stat_t) (err error)
  //sys	Fstatat(fd int, path string, stat *Stat_t, flags int) (err error)
  //sys	Fstatfs(fd int, buf *Statfs_t) (err error)
  //sys	Ftruncate(fd int, length int64) (err error)
  //sysnb	Getegid() (egid int)
  //sysnb	Geteuid() (euid int)
  //sysnb	Getgid() (gid int)
  //sysnb	Getrlimit(resource int, rlim *Rlimit) (err error)
  //sysnb	Getuid() (uid int)
  //sys	Listen(s int, n int) (err error)
  //sys	Pread(fd int, p []byte, offset int64) (n int, err error) = SYS_PREAD64
  //sys	Pwrite(fd int, p []byte, offset int64) (n int, err error) = SYS_PWRITE64
  //sys	Seek(fd int, offset int64, whence int) (off int64, err error) = SYS_LSEEK
  //sys	Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (n int, err error) = SYS_PSELECT6
  //sys	sendfile(outfd int, infd int, offset *int64, count int) (written int, err error)
  //sys	Setfsgid(gid int) (err error)
  //sys	Setfsuid(uid int) (err error)
  //sysnb	Setregid(rgid int, egid int) (err error)
  //sysnb	Setresgid(rgid int, egid int, sgid int) (err error)
  //sysnb	Setresuid(ruid int, euid int, suid int) (err error)
  //sysnb	Setrlimit(resource int, rlim *Rlimit) (err error)
  //sysnb	Setreuid(ruid int, euid int) (err error)
  //sys	Shutdown(fd int, how int) (err error)
  //sys	Splice(rfd int, roff *int64, wfd int, woff *int64, len int, flags int) (n int64, err error)
  
  func Stat(path string, stat *Stat_t) (err error) {
  	return Fstatat(AT_FDCWD, path, stat, 0)
  }
  
  func Lchown(path string, uid int, gid int) (err error) {
  	return Fchownat(AT_FDCWD, path, uid, gid, AT_SYMLINK_NOFOLLOW)
  }
  
  func Lstat(path string, stat *Stat_t) (err error) {
  	return Fstatat(AT_FDCWD, path, stat, AT_SYMLINK_NOFOLLOW)
  }
  
  //sys	Statfs(path string, buf *Statfs_t) (err error)
  //sys	SyncFileRange(fd int, off int64, n int64, flags int) (err error)
  //sys	Truncate(path string, length int64) (err error)
  //sys	accept(s int, rsa *RawSockaddrAny, addrlen *_Socklen) (fd int, err error)
  //sys	accept4(s int, rsa *RawSockaddrAny, addrlen *_Socklen, flags int) (fd int, err error)
  //sys	bind(s int, addr unsafe.Pointer, addrlen _Socklen) (err error)
  //sys	connect(s int, addr unsafe.Pointer, addrlen _Socklen) (err error)
  //sysnb	getgroups(n int, list *_Gid_t) (nn int, err error)
  //sysnb	setgroups(n int, list *_Gid_t) (err error)
  //sys	getsockopt(s int, level int, name int, val unsafe.Pointer, vallen *_Socklen) (err error)
  //sys	setsockopt(s int, level int, name int, val unsafe.Pointer, vallen uintptr) (err error)
  //sysnb	socket(domain int, typ int, proto int) (fd int, err error)
  //sysnb	socketpair(domain int, typ int, proto int, fd *[2]int32) (err error)
  //sysnb	getpeername(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error)
  //sysnb	getsockname(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error)
  //sys	recvfrom(fd int, p []byte, flags int, from *RawSockaddrAny, fromlen *_Socklen) (n int, err error)
  //sys	sendto(s int, buf []byte, flags int, to unsafe.Pointer, addrlen _Socklen) (err error)
  //sys	recvmsg(s int, msg *Msghdr, flags int) (n int, err error)
  //sys	sendmsg(s int, msg *Msghdr, flags int) (n int, err error)
  //sys	mmap(addr uintptr, length uintptr, prot int, flags int, fd int, offset int64) (xaddr uintptr, err error)
  
  func Getpagesize() int { return 65536 }
  
  //sysnb	Gettimeofday(tv *Timeval) (err error)
  //sysnb	Time(t *Time_t) (tt Time_t, err error)
  
  func TimespecToNsec(ts Timespec) int64 { return int64(ts.Sec)*1e9 + int64(ts.Nsec) }
  
  func NsecToTimespec(nsec int64) (ts Timespec) {
  	ts.Sec = nsec / 1e9
  	ts.Nsec = nsec % 1e9
  	return
  }
  
  func TimevalToNsec(tv Timeval) int64 { return int64(tv.Sec)*1e9 + int64(tv.Usec)*1e3 }
  
  func NsecToTimeval(nsec int64) (tv Timeval) {
  	nsec += 999 // round up to microsecond
  	tv.Sec = nsec / 1e9
  	tv.Usec = nsec % 1e9 / 1e3
  	return
  }
  
  func Pipe(p []int) (err error) {
  	if len(p) != 2 {
  		return EINVAL
  	}
  	var pp [2]_C_int
  	err = pipe2(&pp, 0)
  	p[0] = int(pp[0])
  	p[1] = int(pp[1])
  	return
  }
  
  //sysnb pipe2(p *[2]_C_int, flags int) (err error)
  
  func Pipe2(p []int, flags int) (err error) {
  	if len(p) != 2 {
  		return EINVAL
  	}
  	var pp [2]_C_int
  	err = pipe2(&pp, flags)
  	p[0] = int(pp[0])
  	p[1] = int(pp[1])
  	return
  }
  
  func (r *PtraceRegs) PC() uint64 { return r.Pc }
  
  func (r *PtraceRegs) SetPC(pc uint64) { r.Pc = pc }
  
  func (iov *Iovec) SetLen(length int) {
  	iov.Len = uint64(length)
  }
  
  func (msghdr *Msghdr) SetControllen(length int) {
  	msghdr.Controllen = uint64(length)
  }
  
  func (cmsg *Cmsghdr) SetLen(length int) {
  	cmsg.Len = uint64(length)
  }
  
  func InotifyInit() (fd int, err error) {
  	return InotifyInit1(0)
  }
  
  // TODO(dfc): constants that should be in zsysnum_linux_arm64.go, remove
  // these when the deprecated syscalls that the syscall package relies on
  // are removed.
  const (
  	SYS_GETPGRP      = 1060
  	SYS_UTIMES       = 1037
  	SYS_FUTIMESAT    = 1066
  	SYS_PAUSE        = 1061
  	SYS_USTAT        = 1070
  	SYS_UTIME        = 1063
  	SYS_LCHOWN       = 1032
  	SYS_TIME         = 1062
  	SYS_EPOLL_CREATE = 1042
  	SYS_EPOLL_WAIT   = 1069
  )
  