| David K. Bainbridge | 215e024 | 2017-09-05 23:18:24 -0700 | [diff] [blame] | 1 | // Copyright 2015 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 | package unix |
| 6 | |
| 7 | import ( |
| 8 | "syscall" |
| 9 | "unsafe" |
| 10 | ) |
| 11 | |
| 12 | func Getpagesize() int { return 4096 } |
| 13 | |
| 14 | func TimespecToNsec(ts Timespec) int64 { return int64(ts.Sec)*1e9 + int64(ts.Nsec) } |
| 15 | |
| 16 | func NsecToTimespec(nsec int64) (ts Timespec) { |
| 17 | ts.Sec = int32(nsec / 1e9) |
| 18 | ts.Nsec = int32(nsec % 1e9) |
| 19 | return |
| 20 | } |
| 21 | |
| 22 | func NsecToTimeval(nsec int64) (tv Timeval) { |
| 23 | nsec += 999 // round up to microsecond |
| 24 | tv.Usec = int32(nsec % 1e9 / 1e3) |
| 25 | tv.Sec = int32(nsec / 1e9) |
| 26 | return |
| 27 | } |
| 28 | |
| 29 | //sysnb gettimeofday(tp *Timeval) (sec int32, usec int32, err error) |
| 30 | func Gettimeofday(tv *Timeval) (err error) { |
| 31 | // The tv passed to gettimeofday must be non-nil |
| 32 | // but is otherwise unused. The answers come back |
| 33 | // in the two registers. |
| 34 | sec, usec, err := gettimeofday(tv) |
| 35 | tv.Sec = int32(sec) |
| 36 | tv.Usec = int32(usec) |
| 37 | return err |
| 38 | } |
| 39 | |
| 40 | func SetKevent(k *Kevent_t, fd, mode, flags int) { |
| 41 | k.Ident = uint32(fd) |
| 42 | k.Filter = int16(mode) |
| 43 | k.Flags = uint16(flags) |
| 44 | } |
| 45 | |
| 46 | func (iov *Iovec) SetLen(length int) { |
| 47 | iov.Len = uint32(length) |
| 48 | } |
| 49 | |
| 50 | func (msghdr *Msghdr) SetControllen(length int) { |
| 51 | msghdr.Controllen = uint32(length) |
| 52 | } |
| 53 | |
| 54 | func (cmsg *Cmsghdr) SetLen(length int) { |
| 55 | cmsg.Len = uint32(length) |
| 56 | } |
| 57 | |
| 58 | func sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) { |
| 59 | var length = uint64(count) |
| 60 | |
| 61 | _, _, e1 := Syscall9(SYS_SENDFILE, uintptr(infd), uintptr(outfd), uintptr(*offset), uintptr(*offset>>32), uintptr(unsafe.Pointer(&length)), 0, 0, 0, 0) |
| 62 | |
| 63 | written = int(length) |
| 64 | |
| 65 | if e1 != 0 { |
| 66 | err = e1 |
| 67 | } |
| 68 | return |
| 69 | } |
| 70 | |
| 71 | func Syscall9(num, a1, a2, a3, a4, a5, a6, a7, a8, a9 uintptr) (r1, r2 uintptr, err syscall.Errno) // sic |