450 lines
12 KiB
Go
450 lines
12 KiB
Go
// Copyright 2009,2010 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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// OpenBSD 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_bsd.go or syscall_unix.go.
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package unix
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import (
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"sort"
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"syscall"
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"unsafe"
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)
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// SockaddrDatalink implements the Sockaddr interface for AF_LINK type sockets.
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type SockaddrDatalink struct {
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Len uint8
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Family uint8
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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 [24]int8
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raw RawSockaddrDatalink
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}
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func Syscall9(trap, a1, a2, a3, a4, a5, a6, a7, a8, a9 uintptr) (r1, r2 uintptr, err syscall.Errno)
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func nametomib(name string) (mib []_C_int, err error) {
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i := sort.Search(len(sysctlMib), func(i int) bool {
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return sysctlMib[i].ctlname >= name
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})
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if i < len(sysctlMib) && sysctlMib[i].ctlname == name {
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return sysctlMib[i].ctloid, nil
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}
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return nil, EINVAL
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}
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func direntIno(buf []byte) (uint64, bool) {
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return readInt(buf, unsafe.Offsetof(Dirent{}.Fileno), unsafe.Sizeof(Dirent{}.Fileno))
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}
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func direntReclen(buf []byte) (uint64, bool) {
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return readInt(buf, unsafe.Offsetof(Dirent{}.Reclen), unsafe.Sizeof(Dirent{}.Reclen))
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}
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func direntNamlen(buf []byte) (uint64, bool) {
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return readInt(buf, unsafe.Offsetof(Dirent{}.Namlen), unsafe.Sizeof(Dirent{}.Namlen))
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}
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func SysctlClockinfo(name string) (*Clockinfo, error) {
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mib, err := sysctlmib(name)
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if err != nil {
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return nil, err
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}
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n := uintptr(SizeofClockinfo)
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var ci Clockinfo
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if err := sysctl(mib, (*byte)(unsafe.Pointer(&ci)), &n, nil, 0); err != nil {
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return nil, err
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}
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if n != SizeofClockinfo {
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return nil, EIO
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}
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return &ci, nil
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}
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func SysctlUvmexp(name string) (*Uvmexp, error) {
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mib, err := sysctlmib(name)
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if err != nil {
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return nil, err
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}
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n := uintptr(SizeofUvmexp)
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var u Uvmexp
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if err := sysctl(mib, (*byte)(unsafe.Pointer(&u)), &n, nil, 0); err != nil {
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return nil, err
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}
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if n != SizeofUvmexp {
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return nil, EIO
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}
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return &u, nil
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}
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//sysnb pipe(p *[2]_C_int) (err error)
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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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var pp [2]_C_int
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err = pipe(&pp)
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p[0] = int(pp[0])
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p[1] = int(pp[1])
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return
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}
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//sys Getdents(fd int, buf []byte) (n int, err error)
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func Getdirentries(fd int, buf []byte, basep *uintptr) (n int, err error) {
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n, err = Getdents(fd, buf)
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if err != nil || basep == nil {
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return
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}
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var off int64
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off, err = Seek(fd, 0, 1 /* SEEK_CUR */)
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if err != nil {
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*basep = ^uintptr(0)
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return
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}
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*basep = uintptr(off)
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if unsafe.Sizeof(*basep) == 8 {
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return
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}
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if off>>32 != 0 {
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// We can't stuff the offset back into a uintptr, so any
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// future calls would be suspect. Generate an error.
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// EIO was allowed by getdirentries.
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err = EIO
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}
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return
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}
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const ImplementsGetwd = true
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//sys Getcwd(buf []byte) (n int, err error) = SYS___GETCWD
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func Getwd() (string, error) {
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var buf [PathMax]byte
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_, err := Getcwd(buf[0:])
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if err != nil {
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return "", err
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}
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n := clen(buf[:])
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if n < 1 {
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return "", EINVAL
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}
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return string(buf[:n]), nil
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}
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func Sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) {
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if raceenabled {
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raceReleaseMerge(unsafe.Pointer(&ioSync))
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}
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return sendfile(outfd, infd, offset, count)
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}
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// TODO
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func sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) {
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return -1, ENOSYS
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}
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func Getfsstat(buf []Statfs_t, flags int) (n int, err error) {
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var _p0 unsafe.Pointer
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var bufsize uintptr
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if len(buf) > 0 {
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_p0 = unsafe.Pointer(&buf[0])
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bufsize = unsafe.Sizeof(Statfs_t{}) * uintptr(len(buf))
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}
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r0, _, e1 := Syscall(SYS_GETFSSTAT, uintptr(_p0), bufsize, uintptr(flags))
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n = int(r0)
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if e1 != 0 {
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err = e1
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}
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return
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}
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func setattrlistTimes(path string, times []Timespec, flags int) error {
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// used on Darwin for UtimesNano
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return ENOSYS
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}
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//sys ioctl(fd int, req uint, arg uintptr) (err error)
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// ioctl itself should not be exposed directly, but additional get/set
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// functions for specific types are permissible.
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// IoctlSetInt performs an ioctl operation which sets an integer value
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// on fd, using the specified request number.
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func IoctlSetInt(fd int, req uint, value int) error {
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return ioctl(fd, req, uintptr(value))
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}
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func ioctlSetWinsize(fd int, req uint, value *Winsize) error {
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return ioctl(fd, req, uintptr(unsafe.Pointer(value)))
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}
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func ioctlSetTermios(fd int, req uint, value *Termios) error {
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return ioctl(fd, req, uintptr(unsafe.Pointer(value)))
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}
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// IoctlGetInt performs an ioctl operation which gets an integer value
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// from fd, using the specified request number.
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func IoctlGetInt(fd int, req uint) (int, error) {
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var value int
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err := ioctl(fd, req, uintptr(unsafe.Pointer(&value)))
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return value, err
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}
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func IoctlGetWinsize(fd int, req uint) (*Winsize, error) {
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var value Winsize
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err := ioctl(fd, req, uintptr(unsafe.Pointer(&value)))
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return &value, err
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}
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func IoctlGetTermios(fd int, req uint) (*Termios, error) {
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var value Termios
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err := ioctl(fd, req, uintptr(unsafe.Pointer(&value)))
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return &value, err
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}
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//sys ppoll(fds *PollFd, nfds int, timeout *Timespec, sigmask *Sigset_t) (n int, err error)
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func Ppoll(fds []PollFd, timeout *Timespec, sigmask *Sigset_t) (n int, err error) {
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if len(fds) == 0 {
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return ppoll(nil, 0, timeout, sigmask)
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}
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return ppoll(&fds[0], len(fds), timeout, sigmask)
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}
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func Uname(uname *Utsname) error {
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mib := []_C_int{CTL_KERN, KERN_OSTYPE}
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n := unsafe.Sizeof(uname.Sysname)
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if err := sysctl(mib, &uname.Sysname[0], &n, nil, 0); err != nil {
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return err
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}
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mib = []_C_int{CTL_KERN, KERN_HOSTNAME}
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n = unsafe.Sizeof(uname.Nodename)
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if err := sysctl(mib, &uname.Nodename[0], &n, nil, 0); err != nil {
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return err
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}
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mib = []_C_int{CTL_KERN, KERN_OSRELEASE}
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n = unsafe.Sizeof(uname.Release)
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if err := sysctl(mib, &uname.Release[0], &n, nil, 0); err != nil {
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return err
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}
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mib = []_C_int{CTL_KERN, KERN_VERSION}
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n = unsafe.Sizeof(uname.Version)
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if err := sysctl(mib, &uname.Version[0], &n, nil, 0); err != nil {
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return err
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}
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// The version might have newlines or tabs in it, convert them to
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// spaces.
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for i, b := range uname.Version {
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if b == '\n' || b == '\t' {
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if i == len(uname.Version)-1 {
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uname.Version[i] = 0
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} else {
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uname.Version[i] = ' '
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}
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}
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}
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mib = []_C_int{CTL_HW, HW_MACHINE}
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n = unsafe.Sizeof(uname.Machine)
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if err := sysctl(mib, &uname.Machine[0], &n, nil, 0); err != nil {
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return err
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}
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return 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 Chflags(path string, flags int) (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 Dup2(from int, to int) (err error)
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//sys Exit(code int)
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//sys Faccessat(dirfd int, path string, mode uint32, flags int) (err error)
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//sys Fchdir(fd int) (err error)
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//sys Fchflags(fd int, flags int) (err error)
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//sys Fchmod(fd int, mode uint32) (err error)
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//sys Fchmodat(dirfd int, path string, mode uint32, flags int) (err error)
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//sys Fchown(fd int, uid int, gid int) (err error)
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//sys Fchownat(dirfd int, path string, uid int, gid int, flags int) (err error)
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//sys Flock(fd int, how 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 Fstatat(fd int, path string, stat *Stat_t, flags int) (err error)
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//sys Fstatfs(fd int, stat *Statfs_t) (err error)
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//sys Fsync(fd int) (err error)
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//sys Ftruncate(fd int, length int64) (err error)
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//sysnb Getegid() (egid int)
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//sysnb Geteuid() (uid int)
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//sysnb Getgid() (gid int)
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//sysnb Getpgid(pid int) (pgid int, err error)
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//sysnb Getpgrp() (pgrp int)
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//sysnb Getpid() (pid int)
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//sysnb Getppid() (ppid int)
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//sys Getpriority(which int, who int) (prio int, err error)
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//sysnb Getrlimit(which int, lim *Rlimit) (err error)
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//sysnb Getrtable() (rtable int, err error)
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//sysnb Getrusage(who int, rusage *Rusage) (err error)
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//sysnb Getsid(pid int) (sid int, 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 Issetugid() (tainted bool)
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//sys Kill(pid int, signum syscall.Signal) (err error)
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//sys Kqueue() (fd int, 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 Linkat(pathfd int, path string, linkfd int, link string, flags int) (err error)
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//sys Listen(s int, backlog int) (err error)
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//sys Lstat(path string, stat *Stat_t) (err error)
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//sys Mkdir(path string, mode uint32) (err error)
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//sys Mkdirat(dirfd int, path string, mode uint32) (err error)
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//sys Mkfifo(path string, mode uint32) (err error)
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//sys Mkfifoat(dirfd int, 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 Mknodat(dirfd int, 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 Openat(dirfd int, 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 Readlinkat(dirfd int, 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 Renameat(fromfd int, from string, tofd int, to string) (err error)
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//sys Revoke(path 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) = SYS_LSEEK
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//sys Select(n int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (err error)
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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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//sys Setlogin(name string) (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)
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//sysnb Setreuid(ruid int, euid int) (err error)
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//sysnb Setresgid(rgid int, egid int, sgid int) (err error)
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//sysnb Setresuid(ruid int, euid int, suid int) (err error)
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//sysnb Setrlimit(which int, lim *Rlimit) (err error)
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//sysnb Setrtable(rtable int) (err error)
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//sysnb Setsid() (pid int, err error)
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//sysnb Settimeofday(tp *Timeval) (err error)
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//sysnb Setuid(uid int) (err error)
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//sys Stat(path string, stat *Stat_t) (err error)
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//sys Statfs(path string, stat *Statfs_t) (err error)
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//sys Symlink(path string, link string) (err error)
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//sys Symlinkat(oldpath string, newdirfd int, newpath string) (err error)
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//sys Sync() (err error)
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//sys Truncate(path string, length int64) (err error)
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//sys Umask(newmask int) (oldmask int)
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//sys Unlink(path string) (err error)
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//sys Unlinkat(dirfd int, path string, flags int) (err error)
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//sys Unmount(path string, flags int) (err error)
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//sys write(fd int, p []byte) (n int, err error)
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//sys mmap(addr uintptr, length uintptr, prot int, flag int, fd int, pos int64) (ret uintptr, err error)
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//sys munmap(addr uintptr, length uintptr) (err error)
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//sys readlen(fd int, buf *byte, nbuf int) (n int, err error) = SYS_READ
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//sys writelen(fd int, buf *byte, nbuf int) (n int, err error) = SYS_WRITE
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//sys utimensat(dirfd int, path string, times *[2]Timespec, flags int) (err error)
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/*
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* Unimplemented
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*/
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// __getcwd
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// __semctl
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// __syscall
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// __sysctl
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// adjfreq
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// break
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// clock_getres
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// clock_gettime
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// clock_settime
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// closefrom
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// execve
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// fcntl
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// fhopen
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// fhstat
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// fhstatfs
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// fork
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// futimens
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// getfh
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// getgid
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// getitimer
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// getlogin
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// getresgid
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// getresuid
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// getthrid
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// ktrace
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// lfs_bmapv
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// lfs_markv
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// lfs_segclean
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// lfs_segwait
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// mincore
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// minherit
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// mount
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// mquery
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// msgctl
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// msgget
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// msgrcv
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// msgsnd
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// nfssvc
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// nnpfspioctl
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// preadv
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// profil
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// pwritev
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// quotactl
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// readv
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// reboot
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// renameat
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// rfork
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// sched_yield
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// semget
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// semop
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// setgroups
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// setitimer
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// setsockopt
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// shmat
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// shmctl
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// shmdt
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// shmget
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// sigaction
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// sigaltstack
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// sigpending
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// sigprocmask
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// sigreturn
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// sigsuspend
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// sysarch
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// syscall
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// threxit
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// thrsigdivert
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// thrsleep
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// thrwakeup
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// vfork
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// writev
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