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// Copyright 2009,2010 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// NetBSD system calls.
// This file is compiled as ordinary Go code,
// but it is also input to mksyscall,
// which parses the //sys lines and generates system call stubs.
// Note that sometimes we use a lowercase //sys name and wrap
// it in our own nicer implementation, either here or in
// syscall_bsd.go or syscall_unix.go.
package unix
import (
"syscall"
"unsafe"
)
// SockaddrDatalink implements the Sockaddr interface for AF_LINK type sockets.
type SockaddrDatalink struct {
Len uint8
Family uint8
Index uint16
Type uint8
Nlen uint8
Alen uint8
Slen uint8
Data [12]int8
raw RawSockaddrDatalink
}
func Syscall9(trap, a1, a2, a3, a4, a5, a6, a7, a8, a9 uintptr) (r1, r2 uintptr, err syscall.Errno)
func sysctlNodes(mib []_C_int) (nodes []Sysctlnode, err error) {
var olen uintptr
// Get a list of all sysctl nodes below the given MIB by performing
// a sysctl for the given MIB with CTL_QUERY appended.
mib = append(mib, CTL_QUERY)
qnode := Sysctlnode{Flags: SYSCTL_VERS_1}
qp := (*byte)(unsafe.Pointer(&qnode))
sz := unsafe.Sizeof(qnode)
if err = sysctl(mib, nil, &olen, qp, sz); err != nil {
return nil, err
}
// Now that we know the size, get the actual nodes.
nodes = make([]Sysctlnode, olen/sz)
np := (*byte)(unsafe.Pointer(&nodes[0]))
if err = sysctl(mib, np, &olen, qp, sz); err != nil {
return nil, err
}
return nodes, nil
}
func nametomib(name string) (mib []_C_int, err error) {
// Split name into components.
var parts []string
last := 0
for i := 0; i < len(name); i++ {
if name[i] == '.' {
parts = append(parts, name[last:i])
last = i + 1
}
}
parts = append(parts, name[last:])
// Discover the nodes and construct the MIB OID.
for partno, part := range parts {
nodes, err := sysctlNodes(mib)
if err != nil {
return nil, err
}
for _, node := range nodes {
n := make([]byte, 0)
for i := range node.Name {
if node.Name[i] != 0 {
n = append(n, byte(node.Name[i]))
}
}
if string(n) == part {
mib = append(mib, _C_int(node.Num))
break
}
}
if len(mib) != partno+1 {
return nil, EINVAL
}
}
return mib, nil
}
//sysnb pipe() (fd1 int, fd2 int, err error)
func Pipe(p []int) (err error) {
if len(p) != 2 {
return EINVAL
}
p[0], p[1], err = pipe()
return
}
//sys getdents(fd int, buf []byte) (n int, err error)
func Getdirentries(fd int, buf []byte, basep *uintptr) (n int, err error) {
return getdents(fd, buf)
}
const ImplementsGetwd = true
//sys Getcwd(buf []byte) (n int, err error) = SYS___GETCWD
func Getwd() (string, error) {
var buf [PathMax]byte
_, err := Getcwd(buf[0:])
if err != nil {
return "", err
}
n := clen(buf[:])
if n < 1 {
return "", EINVAL
}
return string(buf[:n]), nil
}
// TODO
func sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) {
return -1, ENOSYS
}
func setattrlistTimes(path string, times []Timespec, flags int) error {
// used on Darwin for UtimesNano
return ENOSYS
}
//sys ioctl(fd int, req uint, arg uintptr) (err error)
// ioctl itself should not be exposed directly, but additional get/set
// functions for specific types are permissible.
// IoctlSetInt performs an ioctl operation which sets an integer value
// on fd, using the specified request number.
func IoctlSetInt(fd int, req uint, value int) error {
return ioctl(fd, req, uintptr(value))
}
func ioctlSetWinsize(fd int, req uint, value *Winsize) error {
return ioctl(fd, req, uintptr(unsafe.Pointer(value)))
}
func ioctlSetTermios(fd int, req uint, value *Termios) error {
return ioctl(fd, req, uintptr(unsafe.Pointer(value)))
}
// IoctlGetInt performs an ioctl operation which gets an integer value
// from fd, using the specified request number.
func IoctlGetInt(fd int, req uint) (int, error) {
var value int
err := ioctl(fd, req, uintptr(unsafe.Pointer(&value)))
return value, err
}
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