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567 lines
16 KiB
Go
567 lines
16 KiB
Go
// Copyright 2009 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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// Solaris system calls.
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// This file is compiled as ordinary Go code,
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// but it is also input to mksyscall,
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// which parses the //sys lines and generates system call stubs.
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// Note that sometimes we use a lowercase //sys name and wrap
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// it in our own nicer implementation, either here or in
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// syscall_solaris.go or syscall_unix.go.
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package unix
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import (
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"sync/atomic"
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"syscall"
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"unsafe"
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)
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// Implemented in runtime/syscall_solaris.go.
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type syscallFunc uintptr
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func rawSysvicall6(trap, nargs, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2 uintptr, err syscall.Errno)
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func sysvicall6(trap, nargs, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2 uintptr, err syscall.Errno)
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type SockaddrDatalink struct {
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Family uint16
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Index uint16
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Type uint8
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Nlen uint8
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Alen uint8
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Slen uint8
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Data [244]int8
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raw RawSockaddrDatalink
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}
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func clen(n []byte) int {
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for i := 0; i < len(n); i++ {
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if n[i] == 0 {
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return i
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}
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}
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return len(n)
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}
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// ParseDirent parses up to max directory entries in buf,
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// appending the names to names. It returns the number
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// bytes consumed from buf, the number of entries added
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// to names, and the new names slice.
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func ParseDirent(buf []byte, max int, names []string) (consumed int, count int, newnames []string) {
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origlen := len(buf)
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for max != 0 && len(buf) > 0 {
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dirent := (*Dirent)(unsafe.Pointer(&buf[0]))
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if dirent.Reclen == 0 {
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buf = nil
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break
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}
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buf = buf[dirent.Reclen:]
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if dirent.Ino == 0 { // File absent in directory.
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continue
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}
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bytes := (*[10000]byte)(unsafe.Pointer(&dirent.Name[0]))
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var name = string(bytes[0:clen(bytes[:])])
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if name == "." || name == ".." { // Useless names
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continue
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}
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max--
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count++
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names = append(names, name)
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}
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return origlen - len(buf), count, names
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}
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func pipe() (r uintptr, w uintptr, err uintptr)
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func Pipe(p []int) (err error) {
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if len(p) != 2 {
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return EINVAL
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}
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r0, w0, e1 := pipe()
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if e1 != 0 {
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err = syscall.Errno(e1)
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}
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p[0], p[1] = int(r0), int(w0)
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return
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}
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func (sa *SockaddrInet4) sockaddr() (unsafe.Pointer, _Socklen, error) {
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if sa.Port < 0 || sa.Port > 0xFFFF {
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return nil, 0, EINVAL
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}
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sa.raw.Family = AF_INET
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p := (*[2]byte)(unsafe.Pointer(&sa.raw.Port))
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p[0] = byte(sa.Port >> 8)
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p[1] = byte(sa.Port)
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for i := 0; i < len(sa.Addr); i++ {
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sa.raw.Addr[i] = sa.Addr[i]
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}
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return unsafe.Pointer(&sa.raw), SizeofSockaddrInet4, nil
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}
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func (sa *SockaddrInet6) sockaddr() (unsafe.Pointer, _Socklen, error) {
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if sa.Port < 0 || sa.Port > 0xFFFF {
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return nil, 0, EINVAL
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}
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sa.raw.Family = AF_INET6
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p := (*[2]byte)(unsafe.Pointer(&sa.raw.Port))
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p[0] = byte(sa.Port >> 8)
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p[1] = byte(sa.Port)
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sa.raw.Scope_id = sa.ZoneId
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for i := 0; i < len(sa.Addr); i++ {
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sa.raw.Addr[i] = sa.Addr[i]
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}
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return unsafe.Pointer(&sa.raw), SizeofSockaddrInet6, nil
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}
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func (sa *SockaddrUnix) sockaddr() (unsafe.Pointer, _Socklen, error) {
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name := sa.Name
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n := len(name)
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if n >= len(sa.raw.Path) {
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return nil, 0, EINVAL
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}
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sa.raw.Family = AF_UNIX
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for i := 0; i < n; i++ {
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sa.raw.Path[i] = int8(name[i])
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}
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// length is family (uint16), name, NUL.
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sl := _Socklen(2)
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if n > 0 {
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sl += _Socklen(n) + 1
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}
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if sa.raw.Path[0] == '@' {
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sa.raw.Path[0] = 0
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// Don't count trailing NUL for abstract address.
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sl--
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}
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return unsafe.Pointer(&sa.raw), sl, nil
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}
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func Getsockname(fd int) (sa Sockaddr, err error) {
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var rsa RawSockaddrAny
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var len _Socklen = SizeofSockaddrAny
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if err = getsockname(fd, &rsa, &len); err != nil {
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return
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}
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return anyToSockaddr(&rsa)
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}
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// The const provides a compile-time constant so clients
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// can adjust to whether there is a working Getwd and avoid
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// even linking this function into the binary. See ../os/getwd.go.
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const ImplementsGetwd = false
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func Getwd() (string, error) { return "", ENOTSUP }
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/*
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* Wrapped
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*/
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//sysnb getgroups(ngid int, gid *_Gid_t) (n int, err error)
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//sysnb setgroups(ngid int, gid *_Gid_t) (err error)
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func Getgroups() (gids []int, err error) {
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n, err := getgroups(0, nil)
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if err != nil {
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return nil, err
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}
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if n == 0 {
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return nil, nil
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}
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// Sanity check group count. Max is 16 on BSD.
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if n < 0 || n > 1000 {
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return nil, EINVAL
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}
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a := make([]_Gid_t, n)
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n, err = getgroups(n, &a[0])
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if err != nil {
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return nil, err
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}
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gids = make([]int, n)
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for i, v := range a[0:n] {
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gids[i] = int(v)
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}
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return
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}
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func Setgroups(gids []int) (err error) {
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if len(gids) == 0 {
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return setgroups(0, nil)
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}
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a := make([]_Gid_t, len(gids))
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for i, v := range gids {
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a[i] = _Gid_t(v)
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}
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return setgroups(len(a), &a[0])
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}
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func ReadDirent(fd int, buf []byte) (n int, err error) {
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// Final argument is (basep *uintptr) and the syscall doesn't take nil.
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// TODO(rsc): Can we use a single global basep for all calls?
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return Getdents(fd, buf, new(uintptr))
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}
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// Wait status is 7 bits at bottom, either 0 (exited),
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// 0x7F (stopped), or a signal number that caused an exit.
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// The 0x80 bit is whether there was a core dump.
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// An extra number (exit code, signal causing a stop)
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// is in the high bits.
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type WaitStatus uint32
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const (
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mask = 0x7F
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core = 0x80
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shift = 8
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exited = 0
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stopped = 0x7F
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)
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func (w WaitStatus) Exited() bool { return w&mask == exited }
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func (w WaitStatus) ExitStatus() int {
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if w&mask != exited {
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return -1
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}
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return int(w >> shift)
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}
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func (w WaitStatus) Signaled() bool { return w&mask != stopped && w&mask != 0 }
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func (w WaitStatus) Signal() syscall.Signal {
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sig := syscall.Signal(w & mask)
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if sig == stopped || sig == 0 {
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return -1
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}
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return sig
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}
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func (w WaitStatus) CoreDump() bool { return w.Signaled() && w&core != 0 }
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func (w WaitStatus) Stopped() bool { return w&mask == stopped && syscall.Signal(w>>shift) != SIGSTOP }
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func (w WaitStatus) Continued() bool { return w&mask == stopped && syscall.Signal(w>>shift) == SIGSTOP }
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func (w WaitStatus) StopSignal() syscall.Signal {
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if !w.Stopped() {
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return -1
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}
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return syscall.Signal(w>>shift) & 0xFF
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}
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func (w WaitStatus) TrapCause() int { return -1 }
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func wait4(pid uintptr, wstatus *WaitStatus, options uintptr, rusage *Rusage) (wpid uintptr, err uintptr)
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func Wait4(pid int, wstatus *WaitStatus, options int, rusage *Rusage) (wpid int, err error) {
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r0, e1 := wait4(uintptr(pid), wstatus, uintptr(options), rusage)
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if e1 != 0 {
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err = syscall.Errno(e1)
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}
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return int(r0), err
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}
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func gethostname() (name string, err uintptr)
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func Gethostname() (name string, err error) {
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name, e1 := gethostname()
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if e1 != 0 {
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err = syscall.Errno(e1)
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}
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return name, err
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}
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func UtimesNano(path string, ts []Timespec) error {
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if ts == nil {
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return Utimes(path, nil)
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}
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if len(ts) != 2 {
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return EINVAL
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}
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var tv [2]Timeval
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for i := 0; i < 2; i++ {
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tv[i].Sec = ts[i].Sec
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tv[i].Usec = ts[i].Nsec / 1000
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}
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return Utimes(path, (*[2]Timeval)(unsafe.Pointer(&tv[0])))
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}
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//sys fcntl(fd int, cmd int, arg int) (val int, err error)
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// FcntlFlock performs a fcntl syscall for the F_GETLK, F_SETLK or F_SETLKW command.
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func FcntlFlock(fd uintptr, cmd int, lk *Flock_t) error {
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_, _, e1 := sysvicall6(uintptr(unsafe.Pointer(&procfcntl)), 3, uintptr(fd), uintptr(cmd), uintptr(unsafe.Pointer(lk)), 0, 0, 0)
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if e1 != 0 {
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return e1
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}
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return nil
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}
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func anyToSockaddr(rsa *RawSockaddrAny) (Sockaddr, error) {
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switch rsa.Addr.Family {
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case AF_UNIX:
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pp := (*RawSockaddrUnix)(unsafe.Pointer(rsa))
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sa := new(SockaddrUnix)
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// Assume path ends at NUL.
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// This is not technically the Solaris semantics for
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// abstract Unix domain sockets -- they are supposed
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// to be uninterpreted fixed-size binary blobs -- but
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// everyone uses this convention.
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n := 0
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for n < len(pp.Path) && pp.Path[n] != 0 {
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n++
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}
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bytes := (*[10000]byte)(unsafe.Pointer(&pp.Path[0]))[0:n]
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sa.Name = string(bytes)
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return sa, nil
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case AF_INET:
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pp := (*RawSockaddrInet4)(unsafe.Pointer(rsa))
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sa := new(SockaddrInet4)
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p := (*[2]byte)(unsafe.Pointer(&pp.Port))
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sa.Port = int(p[0])<<8 + int(p[1])
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for i := 0; i < len(sa.Addr); i++ {
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sa.Addr[i] = pp.Addr[i]
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}
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return sa, nil
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case AF_INET6:
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pp := (*RawSockaddrInet6)(unsafe.Pointer(rsa))
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sa := new(SockaddrInet6)
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p := (*[2]byte)(unsafe.Pointer(&pp.Port))
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sa.Port = int(p[0])<<8 + int(p[1])
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sa.ZoneId = pp.Scope_id
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for i := 0; i < len(sa.Addr); i++ {
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sa.Addr[i] = pp.Addr[i]
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}
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return sa, nil
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}
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return nil, EAFNOSUPPORT
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}
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//sys accept(s int, rsa *RawSockaddrAny, addrlen *_Socklen) (fd int, err error) = libsocket.accept
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func Accept(fd 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 = accept(fd, &rsa, &len)
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if err != nil {
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return
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}
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sa, err = anyToSockaddr(&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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func Recvmsg(fd int, p, oob []byte, flags int) (n, oobn int, recvflags int, from Sockaddr, err error) {
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var msg Msghdr
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var rsa RawSockaddrAny
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msg.Name = (*byte)(unsafe.Pointer(&rsa))
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msg.Namelen = uint32(SizeofSockaddrAny)
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var iov Iovec
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if len(p) > 0 {
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iov.Base = (*int8)(unsafe.Pointer(&p[0]))
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iov.SetLen(len(p))
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}
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var dummy int8
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if len(oob) > 0 {
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// receive at least one normal byte
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if len(p) == 0 {
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iov.Base = &dummy
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iov.SetLen(1)
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}
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msg.Accrights = (*int8)(unsafe.Pointer(&oob[0]))
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}
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msg.Iov = &iov
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msg.Iovlen = 1
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if n, err = recvmsg(fd, &msg, flags); err != nil {
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return
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}
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oobn = int(msg.Accrightslen)
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// source address is only specified if the socket is unconnected
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if rsa.Addr.Family != AF_UNSPEC {
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from, err = anyToSockaddr(&rsa)
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}
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return
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}
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func Sendmsg(fd int, p, oob []byte, to Sockaddr, flags int) (err error) {
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_, err = SendmsgN(fd, p, oob, to, flags)
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return
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}
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//sys sendmsg(s int, msg *Msghdr, flags int) (n int, err error) = libsocket.sendmsg
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func SendmsgN(fd int, p, oob []byte, to Sockaddr, flags int) (n int, err error) {
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var ptr unsafe.Pointer
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var salen _Socklen
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if to != nil {
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ptr, salen, err = to.sockaddr()
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if err != nil {
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return 0, err
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}
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}
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var msg Msghdr
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msg.Name = (*byte)(unsafe.Pointer(ptr))
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msg.Namelen = uint32(salen)
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var iov Iovec
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if len(p) > 0 {
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iov.Base = (*int8)(unsafe.Pointer(&p[0]))
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iov.SetLen(len(p))
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}
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var dummy int8
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if len(oob) > 0 {
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// send at least one normal byte
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if len(p) == 0 {
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iov.Base = &dummy
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iov.SetLen(1)
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}
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msg.Accrights = (*int8)(unsafe.Pointer(&oob[0]))
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}
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msg.Iov = &iov
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msg.Iovlen = 1
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if n, err = sendmsg(fd, &msg, flags); err != nil {
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return 0, err
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}
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if len(oob) > 0 && len(p) == 0 {
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n = 0
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}
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return n, nil
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}
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/*
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* Exposed directly
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*/
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//sys Access(path string, mode uint32) (err error)
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//sys Adjtime(delta *Timeval, olddelta *Timeval) (err error)
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//sys Chdir(path string) (err error)
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//sys Chmod(path string, mode uint32) (err error)
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//sys Chown(path string, uid int, gid int) (err error)
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//sys Chroot(path string) (err error)
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//sys Close(fd int) (err error)
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//sys Dup(fd int) (nfd int, err error)
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//sys Exit(code int)
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//sys Fchdir(fd int) (err error)
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//sys Fchmod(fd int, mode uint32) (err error)
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//sys Fchown(fd int, uid int, gid int) (err error)
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//sys Fpathconf(fd int, name int) (val int, err error)
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//sys Fstat(fd int, stat *Stat_t) (err error)
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//sys Getdents(fd int, buf []byte, basep *uintptr) (n int, err error)
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//sysnb Getgid() (gid int)
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//sysnb Getpid() (pid int)
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//sys Geteuid() (euid int)
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//sys Getegid() (egid int)
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//sys Getppid() (ppid int)
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//sys Getpriority(which int, who int) (n int, err error)
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//sysnb Getrlimit(which int, lim *Rlimit) (err error)
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//sysnb Gettimeofday(tv *Timeval) (err error)
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//sysnb Getuid() (uid int)
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//sys Kill(pid int, signum syscall.Signal) (err error)
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//sys Lchown(path string, uid int, gid int) (err error)
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//sys Link(path string, link string) (err error)
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//sys Listen(s int, backlog int) (err error) = libsocket.listen
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//sys Lstat(path string, stat *Stat_t) (err error)
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//sys Madvise(b []byte, advice int) (err error)
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//sys Mkdir(path string, mode uint32) (err error)
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//sys Mknod(path string, mode uint32, dev int) (err error)
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//sys Nanosleep(time *Timespec, leftover *Timespec) (err error)
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//sys Open(path string, mode int, perm uint32) (fd int, err error)
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//sys Pathconf(path string, name int) (val int, err error)
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//sys Pread(fd int, p []byte, offset int64) (n int, err error)
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//sys Pwrite(fd int, p []byte, offset int64) (n int, err error)
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//sys read(fd int, p []byte) (n int, err error)
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//sys Readlink(path string, buf []byte) (n int, err error)
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//sys Rename(from string, to string) (err error)
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//sys Rmdir(path string) (err error)
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//sys Seek(fd int, offset int64, whence int) (newoffset int64, err error) = lseek
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//sysnb Setegid(egid int) (err error)
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//sysnb Seteuid(euid int) (err error)
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//sysnb Setgid(gid int) (err error)
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//sysnb Setpgid(pid int, pgid int) (err error)
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//sys Setpriority(which int, who int, prio int) (err error)
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//sysnb Setregid(rgid int, egid int) (err error)
|
|
//sysnb Setreuid(ruid int, euid int) (err error)
|
|
//sysnb Setrlimit(which int, lim *Rlimit) (err error)
|
|
//sysnb Setsid() (pid int, err error)
|
|
//sysnb Setuid(uid int) (err error)
|
|
//sys Shutdown(s int, how int) (err error) = libsocket.shutdown
|
|
//sys Stat(path string, stat *Stat_t) (err error)
|
|
//sys Symlink(path string, link string) (err error)
|
|
//sys Sync() (err error)
|
|
//sys Truncate(path string, length int64) (err error)
|
|
//sys Fsync(fd int) (err error)
|
|
//sys Ftruncate(fd int, length int64) (err error)
|
|
//sys Umask(newmask int) (oldmask int)
|
|
//sys Unlink(path string) (err error)
|
|
//sys Utimes(path string, times *[2]Timeval) (err error)
|
|
//sys bind(s int, addr unsafe.Pointer, addrlen _Socklen) (err error) = libsocket.bind
|
|
//sys connect(s int, addr unsafe.Pointer, addrlen _Socklen) (err error) = libsocket.connect
|
|
//sys mmap(addr uintptr, length uintptr, prot int, flag int, fd int, pos int64) (ret uintptr, err error)
|
|
//sys munmap(addr uintptr, length uintptr) (err error)
|
|
//sys sendto(s int, buf []byte, flags int, to unsafe.Pointer, addrlen _Socklen) (err error) = libsocket.sendto
|
|
//sys socket(domain int, typ int, proto int) (fd int, err error) = libsocket.socket
|
|
//sysnb socketpair(domain int, typ int, proto int, fd *[2]int32) (err error) = libsocket.socketpair
|
|
//sys write(fd int, p []byte) (n int, err error)
|
|
//sys getsockopt(s int, level int, name int, val unsafe.Pointer, vallen *_Socklen) (err error) = libsocket.getsockopt
|
|
//sysnb getpeername(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error) = libsocket.getpeername
|
|
//sys getsockname(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error) = libsocket.getsockname
|
|
//sys setsockopt(s int, level int, name int, val unsafe.Pointer, vallen uintptr) (err error) = libsocket.setsockopt
|
|
//sys recvfrom(fd int, p []byte, flags int, from *RawSockaddrAny, fromlen *_Socklen) (n int, err error) = libsocket.recvfrom
|
|
//sys recvmsg(s int, msg *Msghdr, flags int) (n int, err error) = libsocket.recvmsg
|
|
|
|
func readlen(fd int, buf *byte, nbuf int) (n int, err error) {
|
|
r0, _, e1 := sysvicall6(uintptr(unsafe.Pointer(&procread)), 3, uintptr(fd), uintptr(unsafe.Pointer(buf)), uintptr(nbuf), 0, 0, 0)
|
|
n = int(r0)
|
|
if e1 != 0 {
|
|
err = e1
|
|
}
|
|
return
|
|
}
|
|
|
|
func writelen(fd int, buf *byte, nbuf int) (n int, err error) {
|
|
r0, _, e1 := sysvicall6(uintptr(unsafe.Pointer(&procwrite)), 3, uintptr(fd), uintptr(unsafe.Pointer(buf)), uintptr(nbuf), 0, 0, 0)
|
|
n = int(r0)
|
|
if e1 != 0 {
|
|
err = e1
|
|
}
|
|
return
|
|
}
|
|
|
|
var mapper = &mmapper{
|
|
active: make(map[*byte][]byte),
|
|
mmap: mmap,
|
|
munmap: munmap,
|
|
}
|
|
|
|
func Mmap(fd int, offset int64, length int, prot int, flags int) (data []byte, err error) {
|
|
return mapper.Mmap(fd, offset, length, prot, flags)
|
|
}
|
|
|
|
func Munmap(b []byte) (err error) {
|
|
return mapper.Munmap(b)
|
|
}
|
|
|
|
//sys sysconf(name int) (n int64, err error)
|
|
|
|
// pageSize caches the value of Getpagesize, since it can't change
|
|
// once the system is booted.
|
|
var pageSize int64 // accessed atomically
|
|
|
|
func Getpagesize() int {
|
|
n := atomic.LoadInt64(&pageSize)
|
|
if n == 0 {
|
|
n, _ = sysconf(_SC_PAGESIZE)
|
|
atomic.StoreInt64(&pageSize, n)
|
|
}
|
|
return int(n)
|
|
}
|