github.com/maenmax/kairep@v0.0.0-20210218001208-55bf3df36788/src/golang.org/x/sys/unix/syscall_dragonfly_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,dragonfly 6 7 package unix 8 9 import ( 10 "syscall" 11 "unsafe" 12 ) 13 14 func Getpagesize() int { return 4096 } 15 16 func TimespecToNsec(ts Timespec) int64 { return int64(ts.Sec)*1e9 + int64(ts.Nsec) } 17 18 func NsecToTimespec(nsec int64) (ts Timespec) { 19 ts.Sec = nsec / 1e9 20 ts.Nsec = nsec % 1e9 21 return 22 } 23 24 func NsecToTimeval(nsec int64) (tv Timeval) { 25 nsec += 999 // round up to microsecond 26 tv.Usec = nsec % 1e9 / 1e3 27 tv.Sec = int64(nsec / 1e9) 28 return 29 } 30 31 func SetKevent(k *Kevent_t, fd, mode, flags int) { 32 k.Ident = uint64(fd) 33 k.Filter = int16(mode) 34 k.Flags = uint16(flags) 35 } 36 37 func (iov *Iovec) SetLen(length int) { 38 iov.Len = uint64(length) 39 } 40 41 func (msghdr *Msghdr) SetControllen(length int) { 42 msghdr.Controllen = uint32(length) 43 } 44 45 func (cmsg *Cmsghdr) SetLen(length int) { 46 cmsg.Len = uint32(length) 47 } 48 49 func sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) { 50 var writtenOut uint64 = 0 51 _, _, e1 := Syscall9(SYS_SENDFILE, uintptr(infd), uintptr(outfd), uintptr(*offset), uintptr(count), 0, uintptr(unsafe.Pointer(&writtenOut)), 0, 0, 0) 52 53 written = int(writtenOut) 54 55 if e1 != 0 { 56 err = e1 57 } 58 return 59 } 60 61 func Syscall9(num, a1, a2, a3, a4, a5, a6, a7, a8, a9 uintptr) (r1, r2 uintptr, err syscall.Errno)