557 lines
15 KiB
Go
557 lines
15 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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// DragonFly BSD 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 "unsafe"
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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 [12]int8
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Rcf uint16
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Route [16]uint16
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raw RawSockaddrDatalink
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}
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// Translate "kern.hostname" to []_C_int{0,1,2,3}.
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func nametomib(name string) (mib []_C_int, err error) {
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const siz = unsafe.Sizeof(mib[0])
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// NOTE(rsc): It seems strange to set the buffer to have
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// size CTL_MAXNAME+2 but use only CTL_MAXNAME
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// as the size. I don't know why the +2 is here, but the
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// kernel uses +2 for its own implementation of this function.
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// I am scared that if we don't include the +2 here, the kernel
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// will silently write 2 words farther than we specify
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// and we'll get memory corruption.
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var buf [CTL_MAXNAME + 2]_C_int
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n := uintptr(CTL_MAXNAME) * siz
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p := (*byte)(unsafe.Pointer(&buf[0]))
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bytes, err := ByteSliceFromString(name)
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if err != nil {
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return nil, err
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}
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// Magic sysctl: "setting" 0.3 to a string name
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// lets you read back the array of integers form.
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if err = sysctl([]_C_int{0, 3}, p, &n, &bytes[0], uintptr(len(name))); err != nil {
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return nil, err
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}
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return buf[0 : n/siz], nil
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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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namlen, ok := direntNamlen(buf)
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if !ok {
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return 0, false
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}
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return (16 + namlen + 1 + 7) &^ 7, true
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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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//sysnb pipe() (r int, w 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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p[0], p[1], err = pipe()
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return
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}
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//sys extpread(fd int, p []byte, flags int, offset int64) (n int, err error)
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func Pread(fd int, p []byte, offset int64) (n int, err error) {
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return extpread(fd, p, 0, offset)
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}
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//sys extpwrite(fd int, p []byte, flags int, offset int64) (n int, err error)
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func Pwrite(fd int, p []byte, offset int64) (n int, err error) {
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return extpwrite(fd, p, 0, offset)
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}
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func Accept4(fd, 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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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 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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func sysctlUname(mib []_C_int, old *byte, oldlen *uintptr) error {
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err := sysctl(mib, old, oldlen, nil, 0)
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if err != nil {
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// Utsname members on Dragonfly are only 32 bytes and
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// the syscall returns ENOMEM in case the actual value
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// is longer.
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if err == ENOMEM {
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err = nil
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}
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}
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return err
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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 := sysctlUname(mib, &uname.Sysname[0], &n); err != nil {
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return err
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}
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uname.Sysname[unsafe.Sizeof(uname.Sysname)-1] = 0
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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 := sysctlUname(mib, &uname.Nodename[0], &n); err != nil {
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return err
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}
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uname.Nodename[unsafe.Sizeof(uname.Nodename)-1] = 0
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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 := sysctlUname(mib, &uname.Release[0], &n); err != nil {
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return err
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}
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uname.Release[unsafe.Sizeof(uname.Release)-1] = 0
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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 := sysctlUname(mib, &uname.Version[0], &n); 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 := sysctlUname(mib, &uname.Machine[0], &n); err != nil {
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return err
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}
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uname.Machine[unsafe.Sizeof(uname.Machine)-1] = 0
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return 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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/*
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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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//sys Getdents(fd int, buf []byte) (n int, err error)
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//sys Getdirentries(fd int, buf []byte, basep *uintptr) (n int, err error)
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//sys Getdtablesize() (size int)
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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 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 Mknod(path string, mode uint32, dev int) (err error)
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//sys Mknodat(fd 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 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 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 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 Undelete(path string) (err error)
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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 accept4(fd int, rsa *RawSockaddrAny, addrlen *_Socklen, flags int) (nfd int, err error)
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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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* TODO(jsing): Update this list for DragonFly.
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*/
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// Profil
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// Sigaction
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// Sigprocmask
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// Getlogin
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// Sigpending
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// Sigaltstack
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// Reboot
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// Execve
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// Vfork
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// Sbrk
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// Sstk
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// Ovadvise
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// Mincore
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// Setitimer
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// Swapon
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// Select
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// Sigsuspend
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// Readv
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// Writev
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// Nfssvc
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// Getfh
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// Quotactl
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// Mount
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// Csops
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// Waitid
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// Add_profil
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// Kdebug_trace
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// Sigreturn
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// Atsocket
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// Kqueue_from_portset_np
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// Kqueue_portset
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// Getattrlist
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// Setattrlist
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// Getdirentriesattr
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// Searchfs
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// Delete
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// Copyfile
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// Watchevent
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// Waitevent
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// Modwatch
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// Getxattr
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// Fgetxattr
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// Setxattr
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// Fsetxattr
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// Removexattr
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// Fremovexattr
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// Listxattr
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// Flistxattr
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// Fsctl
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// Initgroups
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// Posix_spawn
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// Nfsclnt
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// Fhopen
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// Minherit
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// Semsys
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// Msgsys
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// Shmsys
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// Semctl
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// Semget
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// Semop
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// Msgctl
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// Msgget
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// Msgsnd
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// Msgrcv
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// Shmat
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// Shmctl
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// Shmdt
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// Shmget
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// Shm_open
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// Shm_unlink
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// Sem_open
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// Sem_close
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// Sem_unlink
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// Sem_wait
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// Sem_trywait
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// Sem_post
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// Sem_getvalue
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// Sem_init
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// Sem_destroy
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// Open_extended
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// Umask_extended
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// Stat_extended
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// Lstat_extended
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// Fstat_extended
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// Chmod_extended
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// Fchmod_extended
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// Access_extended
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// Settid
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// Gettid
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// Setsgroups
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// Getsgroups
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// Setwgroups
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// Getwgroups
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// Mkfifo_extended
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// Mkdir_extended
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// Identitysvc
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// Shared_region_check_np
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// Shared_region_map_np
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// __pthread_mutex_destroy
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// __pthread_mutex_init
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// __pthread_mutex_lock
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// __pthread_mutex_trylock
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// __pthread_mutex_unlock
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// __pthread_cond_init
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// __pthread_cond_destroy
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// __pthread_cond_broadcast
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// __pthread_cond_signal
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// Setsid_with_pid
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// __pthread_cond_timedwait
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// Aio_fsync
|
|
// Aio_return
|
|
// Aio_suspend
|
|
// Aio_cancel
|
|
// Aio_error
|
|
// Aio_read
|
|
// Aio_write
|
|
// Lio_listio
|
|
// __pthread_cond_wait
|
|
// Iopolicysys
|
|
// __pthread_kill
|
|
// __pthread_sigmask
|
|
// __sigwait
|
|
// __disable_threadsignal
|
|
// __pthread_markcancel
|
|
// __pthread_canceled
|
|
// __semwait_signal
|
|
// Proc_info
|
|
// Stat64_extended
|
|
// Lstat64_extended
|
|
// Fstat64_extended
|
|
// __pthread_chdir
|
|
// __pthread_fchdir
|
|
// Audit
|
|
// Auditon
|
|
// Getauid
|
|
// Setauid
|
|
// Getaudit
|
|
// Setaudit
|
|
// Getaudit_addr
|
|
// Setaudit_addr
|
|
// Auditctl
|
|
// Bsdthread_create
|
|
// Bsdthread_terminate
|
|
// Stack_snapshot
|
|
// Bsdthread_register
|
|
// Workq_open
|
|
// Workq_ops
|
|
// __mac_execve
|
|
// __mac_syscall
|
|
// __mac_get_file
|
|
// __mac_set_file
|
|
// __mac_get_link
|
|
// __mac_set_link
|
|
// __mac_get_proc
|
|
// __mac_set_proc
|
|
// __mac_get_fd
|
|
// __mac_set_fd
|
|
// __mac_get_pid
|
|
// __mac_get_lcid
|
|
// __mac_get_lctx
|
|
// __mac_set_lctx
|
|
// Setlcid
|
|
// Read_nocancel
|
|
// Write_nocancel
|
|
// Open_nocancel
|
|
// Close_nocancel
|
|
// Wait4_nocancel
|
|
// Recvmsg_nocancel
|
|
// Sendmsg_nocancel
|
|
// Recvfrom_nocancel
|
|
// Accept_nocancel
|
|
// Fcntl_nocancel
|
|
// Select_nocancel
|
|
// Fsync_nocancel
|
|
// Connect_nocancel
|
|
// Sigsuspend_nocancel
|
|
// Readv_nocancel
|
|
// Writev_nocancel
|
|
// Sendto_nocancel
|
|
// Pread_nocancel
|
|
// Pwrite_nocancel
|
|
// Waitid_nocancel
|
|
// Msgsnd_nocancel
|
|
// Msgrcv_nocancel
|
|
// Sem_wait_nocancel
|
|
// Aio_suspend_nocancel
|
|
// __sigwait_nocancel
|
|
// __semwait_signal_nocancel
|
|
// __mac_mount
|
|
// __mac_get_mount
|
|
// __mac_getfsstat
|