1// Copyright 2021 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// illumos system calls not present on Solaris.
 6
 7//go:build amd64 && illumos
 8
 9package unix
10
11import (
12	"unsafe"
13)
14
15func bytes2iovec(bs [][]byte) []Iovec {
16	iovecs := make([]Iovec, len(bs))
17	for i, b := range bs {
18		iovecs[i].SetLen(len(b))
19		if len(b) > 0 {
20			iovecs[i].Base = &b[0]
21		} else {
22			iovecs[i].Base = (*byte)(unsafe.Pointer(&_zero))
23		}
24	}
25	return iovecs
26}
27
28//sys	readv(fd int, iovs []Iovec) (n int, err error)
29
30func Readv(fd int, iovs [][]byte) (n int, err error) {
31	iovecs := bytes2iovec(iovs)
32	n, err = readv(fd, iovecs)
33	return n, err
34}
35
36//sys	preadv(fd int, iovs []Iovec, off int64) (n int, err error)
37
38func Preadv(fd int, iovs [][]byte, off int64) (n int, err error) {
39	iovecs := bytes2iovec(iovs)
40	n, err = preadv(fd, iovecs, off)
41	return n, err
42}
43
44//sys	writev(fd int, iovs []Iovec) (n int, err error)
45
46func Writev(fd int, iovs [][]byte) (n int, err error) {
47	iovecs := bytes2iovec(iovs)
48	n, err = writev(fd, iovecs)
49	return n, err
50}
51
52//sys	pwritev(fd int, iovs []Iovec, off int64) (n int, err error)
53
54func Pwritev(fd int, iovs [][]byte, off int64) (n int, err error) {
55	iovecs := bytes2iovec(iovs)
56	n, err = pwritev(fd, iovecs, off)
57	return n, err
58}
59
60//sys	accept4(s int, rsa *RawSockaddrAny, addrlen *_Socklen, flags int) (fd int, err error) = libsocket.accept4
61
62func Accept4(fd int, flags int) (nfd int, sa Sockaddr, err error) {
63	var rsa RawSockaddrAny
64	var len _Socklen = SizeofSockaddrAny
65	nfd, err = accept4(fd, &rsa, &len, flags)
66	if err != nil {
67		return
68	}
69	if len > SizeofSockaddrAny {
70		panic("RawSockaddrAny too small")
71	}
72	sa, err = anyToSockaddr(fd, &rsa)
73	if err != nil {
74		Close(nfd)
75		nfd = 0
76	}
77	return
78}