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
5package syscall
6
7import "unsafe"
8
9func setTimespec(sec, nsec int64) Timespec {
10	return Timespec{Sec: int64(sec), Nsec: int64(nsec)}
11}
12
13func setTimeval(sec, usec int64) Timeval {
14	return Timeval{Sec: int64(sec), Usec: int32(usec)}
15}
16
17//sys	Fstat(fd int, stat *Stat_t) (err error)
18//sys	Fstatfs(fd int, stat *Statfs_t) (err error)
19//sysnb	Gettimeofday(tp *Timeval) (err error)
20//sys	Lstat(path string, stat *Stat_t) (err error)
21//sys	Stat(path string, stat *Stat_t) (err error)
22//sys	Statfs(path string, stat *Statfs_t) (err error)
23//sys   fstatat(fd int, path string, stat *Stat_t, flags int) (err error)
24
25// Marked nosplit because it is called from forkAndExecInChild where
26// stack growth is forbidden.
27//go:nosplit
28func ptrace(request int, pid int, addr uintptr, data uintptr) error {
29	return ENOTSUP
30}
31
32func SetKevent(k *Kevent_t, fd, mode, flags int) {
33	k.Ident = uint64(fd)
34	k.Filter = int16(mode)
35	k.Flags = uint16(flags)
36}
37
38func (iov *Iovec) SetLen(length int) {
39	iov.Len = uint64(length)
40}
41
42func (msghdr *Msghdr) SetControllen(length int) {
43	msghdr.Controllen = uint32(length)
44}
45
46func (cmsg *Cmsghdr) SetLen(length int) {
47	cmsg.Len = uint32(length)
48}
49
50func sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) {
51	var length = uint64(count)
52
53	_, _, e1 := syscall6(funcPC(libc_sendfile_trampoline), uintptr(infd), uintptr(outfd), uintptr(*offset), uintptr(unsafe.Pointer(&length)), 0, 0)
54
55	written = int(length)
56
57	if e1 != 0 {
58		err = e1
59	}
60	return
61}
62
63func libc_sendfile_trampoline()
64
65//go:linkname libc_sendfile libc_sendfile
66//go:cgo_import_dynamic libc_sendfile sendfile "/usr/lib/libSystem.B.dylib"
67
68// Implemented in the runtime package (runtime/sys_darwin_64.go)
69func syscallX(fn, a1, a2, a3 uintptr) (r1, r2 uintptr, err Errno)
70
71func Syscall9(num, a1, a2, a3, a4, a5, a6, a7, a8, a9 uintptr) (r1, r2 uintptr, err Errno) // sic
72