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// Copyright 2021 The Go Authors. All rights reserved. |
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// Use of this source code is governed by a BSD-style |
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// license that can be found in the LICENSE file. |
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// illumos system calls not present on Solaris. |
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//go:build amd64 && illumos |
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// +build amd64,illumos |
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package unix |
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import ( |
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"fmt" |
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"runtime" |
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"unsafe" |
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) |
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func bytes2iovec(bs [][]byte) []Iovec { |
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iovecs := make([]Iovec, len(bs)) |
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for i, b := range bs { |
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iovecs[i].SetLen(len(b)) |
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if len(b) > 0 { |
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iovecs[i].Base = &b[0] |
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} else { |
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iovecs[i].Base = (*byte)(unsafe.Pointer(&_zero)) |
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} |
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} |
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return iovecs |
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} |
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//sys readv(fd int, iovs []Iovec) (n int, err error) |
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func Readv(fd int, iovs [][]byte) (n int, err error) { |
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iovecs := bytes2iovec(iovs) |
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n, err = readv(fd, iovecs) |
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return n, err |
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} |
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//sys preadv(fd int, iovs []Iovec, off int64) (n int, err error) |
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func Preadv(fd int, iovs [][]byte, off int64) (n int, err error) { |
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iovecs := bytes2iovec(iovs) |
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n, err = preadv(fd, iovecs, off) |
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return n, err |
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} |
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//sys writev(fd int, iovs []Iovec) (n int, err error) |
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func Writev(fd int, iovs [][]byte) (n int, err error) { |
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iovecs := bytes2iovec(iovs) |
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n, err = writev(fd, iovecs) |
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return n, err |
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} |
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//sys pwritev(fd int, iovs []Iovec, off int64) (n int, err error) |
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func Pwritev(fd int, iovs [][]byte, off int64) (n int, err error) { |
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iovecs := bytes2iovec(iovs) |
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n, err = pwritev(fd, iovecs, off) |
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return n, err |
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} |
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//sys accept4(s int, rsa *RawSockaddrAny, addrlen *_Socklen, flags int) (fd int, err error) = libsocket.accept4 |
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func Accept4(fd int, flags int) (nfd int, sa Sockaddr, err error) { |
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var rsa RawSockaddrAny |
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var len _Socklen = SizeofSockaddrAny |
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nfd, err = accept4(fd, &rsa, &len, flags) |
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if err != nil { |
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return |
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} |
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if len > SizeofSockaddrAny { |
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panic("RawSockaddrAny too small") |
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} |
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sa, err = anyToSockaddr(fd, &rsa) |
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if err != nil { |
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Close(nfd) |
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nfd = 0 |
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} |
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return |
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} |
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//sys putmsg(fd int, clptr *strbuf, dataptr *strbuf, flags int) (err error) |
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func Putmsg(fd int, cl []byte, data []byte, flags int) (err error) { |
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var clp, datap *strbuf |
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if len(cl) > 0 { |
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clp = &strbuf{ |
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Len: int32(len(cl)), |
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Buf: (*int8)(unsafe.Pointer(&cl[0])), |
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} |
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} |
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if len(data) > 0 { |
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datap = &strbuf{ |
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Len: int32(len(data)), |
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Buf: (*int8)(unsafe.Pointer(&data[0])), |
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} |
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} |
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return putmsg(fd, clp, datap, flags) |
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} |
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//sys getmsg(fd int, clptr *strbuf, dataptr *strbuf, flags *int) (err error) |
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func Getmsg(fd int, cl []byte, data []byte) (retCl []byte, retData []byte, flags int, err error) { |
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var clp, datap *strbuf |
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if len(cl) > 0 { |
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clp = &strbuf{ |
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Maxlen: int32(len(cl)), |
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Buf: (*int8)(unsafe.Pointer(&cl[0])), |
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} |
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} |
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if len(data) > 0 { |
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datap = &strbuf{ |
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Maxlen: int32(len(data)), |
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Buf: (*int8)(unsafe.Pointer(&data[0])), |
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} |
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} |
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if err = getmsg(fd, clp, datap, &flags); err != nil { |
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return nil, nil, 0, err |
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} |
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if len(cl) > 0 { |
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retCl = cl[:clp.Len] |
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} |
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if len(data) > 0 { |
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retData = data[:datap.Len] |
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} |
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return retCl, retData, flags, nil |
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} |
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func IoctlSetIntRetInt(fd int, req uint, arg int) (int, error) { |
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return ioctlRet(fd, req, uintptr(arg)) |
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} |
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func IoctlSetString(fd int, req uint, val string) error { |
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bs := make([]byte, len(val)+1) |
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copy(bs[:len(bs)-1], val) |
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err := ioctl(fd, req, uintptr(unsafe.Pointer(&bs[0]))) |
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runtime.KeepAlive(&bs[0]) |
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return err |
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} |
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// Lifreq Helpers |
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func (l *Lifreq) SetName(name string) error { |
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if len(name) >= len(l.Name) { |
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return fmt.Errorf("name cannot be more than %d characters", len(l.Name)-1) |
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} |
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for i := range name { |
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l.Name[i] = int8(name[i]) |
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} |
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return nil |
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} |
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func (l *Lifreq) SetLifruInt(d int) { |
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*(*int)(unsafe.Pointer(&l.Lifru[0])) = d |
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} |
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func (l *Lifreq) GetLifruInt() int { |
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return *(*int)(unsafe.Pointer(&l.Lifru[0])) |
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} |
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func (l *Lifreq) SetLifruUint(d uint) { |
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*(*uint)(unsafe.Pointer(&l.Lifru[0])) = d |
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} |
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func (l *Lifreq) GetLifruUint() uint { |
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return *(*uint)(unsafe.Pointer(&l.Lifru[0])) |
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} |
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func IoctlLifreq(fd int, req uint, l *Lifreq) error { |
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return ioctl(fd, req, uintptr(unsafe.Pointer(l))) |
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} |
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// Strioctl Helpers |
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func (s *Strioctl) SetInt(i int) { |
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s.Len = int32(unsafe.Sizeof(i)) |
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s.Dp = (*int8)(unsafe.Pointer(&i)) |
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} |
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func IoctlSetStrioctlRetInt(fd int, req uint, s *Strioctl) (int, error) { |
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return ioctlRet(fd, req, uintptr(unsafe.Pointer(s))) |
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} |