github.com/graybobo/golang.org-package-offline-cache@v0.0.0-20200626051047-6608995c132f/x/sys/unix/syscall_darwin_amd64.go (about)

     1  // Copyright 2009 The Go Authors. All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  // +build amd64,darwin
     6  
     7  package unix
     8  
     9  import (
    10  	"syscall"
    11  	"unsafe"
    12  )
    13  
    14  //sys	Fchmodat(dirfd int, path string, mode uint32, flags int) (err error)
    15  
    16  func Getpagesize() int { return 4096 }
    17  
    18  func TimespecToNsec(ts Timespec) int64 { return int64(ts.Sec)*1e9 + int64(ts.Nsec) }
    19  
    20  func NsecToTimespec(nsec int64) (ts Timespec) {
    21  	ts.Sec = nsec / 1e9
    22  	ts.Nsec = nsec % 1e9
    23  	return
    24  }
    25  
    26  func TimevalToNsec(tv Timeval) int64 { return int64(tv.Sec)*1e9 + int64(tv.Usec)*1e3 }
    27  
    28  func NsecToTimeval(nsec int64) (tv Timeval) {
    29  	nsec += 999 // round up to microsecond
    30  	tv.Usec = int32(nsec % 1e9 / 1e3)
    31  	tv.Sec = int64(nsec / 1e9)
    32  	return
    33  }
    34  
    35  //sysnb	gettimeofday(tp *Timeval) (sec int64, usec int32, err error)
    36  func Gettimeofday(tv *Timeval) (err error) {
    37  	// The tv passed to gettimeofday must be non-nil
    38  	// but is otherwise unused.  The answers come back
    39  	// in the two registers.
    40  	sec, usec, err := gettimeofday(tv)
    41  	tv.Sec = sec
    42  	tv.Usec = usec
    43  	return err
    44  }
    45  
    46  func SetKevent(k *Kevent_t, fd, mode, flags int) {
    47  	k.Ident = uint64(fd)
    48  	k.Filter = int16(mode)
    49  	k.Flags = uint16(flags)
    50  }
    51  
    52  func (iov *Iovec) SetLen(length int) {
    53  	iov.Len = uint64(length)
    54  }
    55  
    56  func (msghdr *Msghdr) SetControllen(length int) {
    57  	msghdr.Controllen = uint32(length)
    58  }
    59  
    60  func (cmsg *Cmsghdr) SetLen(length int) {
    61  	cmsg.Len = uint32(length)
    62  }
    63  
    64  func sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) {
    65  	var length = uint64(count)
    66  
    67  	_, _, e1 := Syscall6(SYS_SENDFILE, uintptr(infd), uintptr(outfd), uintptr(*offset), uintptr(unsafe.Pointer(&length)), 0, 0)
    68  
    69  	written = int(length)
    70  
    71  	if e1 != 0 {
    72  		err = e1
    73  	}
    74  	return
    75  }
    76  
    77  func Syscall9(num, a1, a2, a3, a4, a5, a6, a7, a8, a9 uintptr) (r1, r2 uintptr, err syscall.Errno)
    78  
    79  // SYS___SYSCTL is used by syscall_bsd.go for all BSDs, but in modern versions
    80  // of darwin/amd64 the syscall is called sysctl instead of __sysctl.
    81  const SYS___SYSCTL = SYS_SYSCTL