github.com/juelite/golang.org-x-sys@v0.0.0-20181121071242-7b69e1c5db33/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 NsecToTimeval(nsec int64) (tv Timeval) { 27 nsec += 999 // round up to microsecond 28 tv.Usec = int32(nsec % 1e9 / 1e3) 29 tv.Sec = int64(nsec / 1e9) 30 return 31 } 32 33 //sysnb gettimeofday(tp *Timeval) (sec int64, usec int32, err error) 34 func Gettimeofday(tv *Timeval) (err error) { 35 // The tv passed to gettimeofday must be non-nil 36 // but is otherwise unused. The answers come back 37 // in the two registers. 38 sec, usec, err := gettimeofday(tv) 39 tv.Sec = sec 40 tv.Usec = usec 41 return err 42 } 43 44 func SetKevent(k *Kevent_t, fd, mode, flags int) { 45 k.Ident = uint64(fd) 46 k.Filter = int16(mode) 47 k.Flags = uint16(flags) 48 } 49 50 func (iov *Iovec) SetLen(length int) { 51 iov.Len = uint64(length) 52 } 53 54 func (msghdr *Msghdr) SetControllen(length int) { 55 msghdr.Controllen = uint32(length) 56 } 57 58 func (cmsg *Cmsghdr) SetLen(length int) { 59 cmsg.Len = uint32(length) 60 } 61 62 func sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) { 63 var length = uint64(count) 64 65 _, _, e1 := Syscall6(SYS_SENDFILE, uintptr(infd), uintptr(outfd), uintptr(*offset), uintptr(unsafe.Pointer(&length)), 0, 0) 66 67 written = int(length) 68 69 if e1 != 0 { 70 err = e1 71 } 72 return 73 } 74 75 func Syscall9(num, a1, a2, a3, a4, a5, a6, a7, a8, a9 uintptr) (r1, r2 uintptr, err syscall.Errno) 76 77 // SYS___SYSCTL is used by syscall_bsd.go for all BSDs, but in modern versions 78 // of darwin/amd64 the syscall is called sysctl instead of __sysctl. 79 const SYS___SYSCTL = SYS_SYSCTL