+++ /dev/null
-// Copyright 2009 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.
-
-// Linux 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.
-
-package unix
-
-import (
- "syscall"
- "unsafe"
-)
-
-/*
- * Wrapped
- */
-
-func Access(path string, mode uint32) (err error) {
- return Faccessat(AT_FDCWD, path, mode, 0)
-}
-
-func Chmod(path string, mode uint32) (err error) {
- return Fchmodat(AT_FDCWD, path, mode, 0)
-}
-
-func Chown(path string, uid int, gid int) (err error) {
- return Fchownat(AT_FDCWD, path, uid, gid, 0)
-}
-
-func Creat(path string, mode uint32) (fd int, err error) {
- return Open(path, O_CREAT|O_WRONLY|O_TRUNC, mode)
-}
-
-//sys fchmodat(dirfd int, path string, mode uint32) (err error)
-
-func Fchmodat(dirfd int, path string, mode uint32, flags int) (err error) {
- // Linux fchmodat doesn't support the flags parameter. Mimick glibc's behavior
- // and check the flags. Otherwise the mode would be applied to the symlink
- // destination which is not what the user expects.
- if flags&^AT_SYMLINK_NOFOLLOW != 0 {
- return EINVAL
- } else if flags&AT_SYMLINK_NOFOLLOW != 0 {
- return EOPNOTSUPP
- }
- return fchmodat(dirfd, path, mode)
-}
-
-//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
-}
-
-func IoctlGetWinsize(fd int, req uint) (*Winsize, error) {
- var value Winsize
- err := ioctl(fd, req, uintptr(unsafe.Pointer(&value)))
- return &value, err
-}
-
-func IoctlGetTermios(fd int, req uint) (*Termios, error) {
- var value Termios
- err := ioctl(fd, req, uintptr(unsafe.Pointer(&value)))
- return &value, err
-}
-
-//sys Linkat(olddirfd int, oldpath string, newdirfd int, newpath string, flags int) (err error)
-
-func Link(oldpath string, newpath string) (err error) {
- return Linkat(AT_FDCWD, oldpath, AT_FDCWD, newpath, 0)
-}
-
-func Mkdir(path string, mode uint32) (err error) {
- return Mkdirat(AT_FDCWD, path, mode)
-}
-
-func Mknod(path string, mode uint32, dev int) (err error) {
- return Mknodat(AT_FDCWD, path, mode, dev)
-}
-
-func Open(path string, mode int, perm uint32) (fd int, err error) {
- return openat(AT_FDCWD, path, mode|O_LARGEFILE, perm)
-}
-
-//sys openat(dirfd int, path string, flags int, mode uint32) (fd int, err error)
-
-func Openat(dirfd int, path string, flags int, mode uint32) (fd int, err error) {
- return openat(dirfd, path, flags|O_LARGEFILE, mode)
-}
-
-//sys ppoll(fds *PollFd, nfds int, timeout *Timespec, sigmask *Sigset_t) (n int, err error)
-
-func Ppoll(fds []PollFd, timeout *Timespec, sigmask *Sigset_t) (n int, err error) {
- if len(fds) == 0 {
- return ppoll(nil, 0, timeout, sigmask)
- }
- return ppoll(&fds[0], len(fds), timeout, sigmask)
-}
-
-//sys Readlinkat(dirfd int, path string, buf []byte) (n int, err error)
-
-func Readlink(path string, buf []byte) (n int, err error) {
- return Readlinkat(AT_FDCWD, path, buf)
-}
-
-func Rename(oldpath string, newpath string) (err error) {
- return Renameat(AT_FDCWD, oldpath, AT_FDCWD, newpath)
-}
-
-func Rmdir(path string) error {
- return Unlinkat(AT_FDCWD, path, AT_REMOVEDIR)
-}
-
-//sys Symlinkat(oldpath string, newdirfd int, newpath string) (err error)
-
-func Symlink(oldpath string, newpath string) (err error) {
- return Symlinkat(oldpath, AT_FDCWD, newpath)
-}
-
-func Unlink(path string) error {
- return Unlinkat(AT_FDCWD, path, 0)
-}
-
-//sys Unlinkat(dirfd int, path string, flags int) (err error)
-
-//sys utimes(path string, times *[2]Timeval) (err error)
-
-func Utimes(path string, tv []Timeval) error {
- if tv == nil {
- err := utimensat(AT_FDCWD, path, nil, 0)
- if err != ENOSYS {
- return err
- }
- return utimes(path, nil)
- }
- if len(tv) != 2 {
- return EINVAL
- }
- var ts [2]Timespec
- ts[0] = NsecToTimespec(TimevalToNsec(tv[0]))
- ts[1] = NsecToTimespec(TimevalToNsec(tv[1]))
- err := utimensat(AT_FDCWD, path, (*[2]Timespec)(unsafe.Pointer(&ts[0])), 0)
- if err != ENOSYS {
- return err
- }
- return utimes(path, (*[2]Timeval)(unsafe.Pointer(&tv[0])))
-}
-
-//sys utimensat(dirfd int, path string, times *[2]Timespec, flags int) (err error)
-
-func UtimesNano(path string, ts []Timespec) error {
- if ts == nil {
- err := utimensat(AT_FDCWD, path, nil, 0)
- if err != ENOSYS {
- return err
- }
- return utimes(path, nil)
- }
- if len(ts) != 2 {
- return EINVAL
- }
- err := utimensat(AT_FDCWD, path, (*[2]Timespec)(unsafe.Pointer(&ts[0])), 0)
- if err != ENOSYS {
- return err
- }
- // If the utimensat syscall isn't available (utimensat was added to Linux
- // in 2.6.22, Released, 8 July 2007) then fall back to utimes
- var tv [2]Timeval
- for i := 0; i < 2; i++ {
- tv[i] = NsecToTimeval(TimespecToNsec(ts[i]))
- }
- return utimes(path, (*[2]Timeval)(unsafe.Pointer(&tv[0])))
-}
-
-func UtimesNanoAt(dirfd int, path string, ts []Timespec, flags int) error {
- if ts == nil {
- return utimensat(dirfd, path, nil, flags)
- }
- if len(ts) != 2 {
- return EINVAL
- }
- return utimensat(dirfd, path, (*[2]Timespec)(unsafe.Pointer(&ts[0])), flags)
-}
-
-//sys futimesat(dirfd int, path *byte, times *[2]Timeval) (err error)
-
-func Futimesat(dirfd int, path string, tv []Timeval) error {
- pathp, err := BytePtrFromString(path)
- if err != nil {
- return err
- }
- if tv == nil {
- return futimesat(dirfd, pathp, nil)
- }
- if len(tv) != 2 {
- return EINVAL
- }
- return futimesat(dirfd, pathp, (*[2]Timeval)(unsafe.Pointer(&tv[0])))
-}
-
-func Futimes(fd int, tv []Timeval) (err error) {
- // Believe it or not, this is the best we can do on Linux
- // (and is what glibc does).
- return Utimes("/proc/self/fd/"+itoa(fd), tv)
-}
-
-const ImplementsGetwd = true
-
-//sys Getcwd(buf []byte) (n int, err error)
-
-func Getwd() (wd string, err error) {
- var buf [PathMax]byte
- n, err := Getcwd(buf[0:])
- if err != nil {
- return "", err
- }
- // Getcwd returns the number of bytes written to buf, including the NUL.
- if n < 1 || n > len(buf) || buf[n-1] != 0 {
- return "", EINVAL
- }
- return string(buf[0 : n-1]), nil
-}
-
-func Getgroups() (gids []int, err error) {
- n, err := getgroups(0, nil)
- if err != nil {
- return nil, err
- }
- if n == 0 {
- return nil, nil
- }
-
- // Sanity check group count. Max is 1<<16 on Linux.
- if n < 0 || n > 1<<20 {
- return nil, EINVAL
- }
-
- a := make([]_Gid_t, n)
- n, err = getgroups(n, &a[0])
- if err != nil {
- return nil, err
- }
- gids = make([]int, n)
- for i, v := range a[0:n] {
- gids[i] = int(v)
- }
- return
-}
-
-func Setgroups(gids []int) (err error) {
- if len(gids) == 0 {
- return setgroups(0, nil)
- }
-
- a := make([]_Gid_t, len(gids))
- for i, v := range gids {
- a[i] = _Gid_t(v)
- }
- return setgroups(len(a), &a[0])
-}
-
-type WaitStatus uint32
-
-// Wait status is 7 bits at bottom, either 0 (exited),
-// 0x7F (stopped), or a signal number that caused an exit.
-// The 0x80 bit is whether there was a core dump.
-// An extra number (exit code, signal causing a stop)
-// is in the high bits. At least that's the idea.
-// There are various irregularities. For example, the
-// "continued" status is 0xFFFF, distinguishing itself
-// from stopped via the core dump bit.
-
-const (
- mask = 0x7F
- core = 0x80
- exited = 0x00
- stopped = 0x7F
- shift = 8
-)
-
-func (w WaitStatus) Exited() bool { return w&mask == exited }
-
-func (w WaitStatus) Signaled() bool { return w&mask != stopped && w&mask != exited }
-
-func (w WaitStatus) Stopped() bool { return w&0xFF == stopped }
-
-func (w WaitStatus) Continued() bool { return w == 0xFFFF }
-
-func (w WaitStatus) CoreDump() bool { return w.Signaled() && w&core != 0 }
-
-func (w WaitStatus) ExitStatus() int {
- if !w.Exited() {
- return -1
- }
- return int(w>>shift) & 0xFF
-}
-
-func (w WaitStatus) Signal() syscall.Signal {
- if !w.Signaled() {
- return -1
- }
- return syscall.Signal(w & mask)
-}
-
-func (w WaitStatus) StopSignal() syscall.Signal {
- if !w.Stopped() {
- return -1
- }
- return syscall.Signal(w>>shift) & 0xFF
-}
-
-func (w WaitStatus) TrapCause() int {
- if w.StopSignal() != SIGTRAP {
- return -1
- }
- return int(w>>shift) >> 8
-}
-
-//sys wait4(pid int, wstatus *_C_int, options int, rusage *Rusage) (wpid int, err error)
-
-func Wait4(pid int, wstatus *WaitStatus, options int, rusage *Rusage) (wpid int, err error) {
- var status _C_int
- wpid, err = wait4(pid, &status, options, rusage)
- if wstatus != nil {
- *wstatus = WaitStatus(status)
- }
- return
-}
-
-func Mkfifo(path string, mode uint32) error {
- return Mknod(path, mode|S_IFIFO, 0)
-}
-
-func Mkfifoat(dirfd int, path string, mode uint32) error {
- return Mknodat(dirfd, path, mode|S_IFIFO, 0)
-}
-
-func (sa *SockaddrInet4) sockaddr() (unsafe.Pointer, _Socklen, error) {
- if sa.Port < 0 || sa.Port > 0xFFFF {
- return nil, 0, EINVAL
- }
- sa.raw.Family = AF_INET
- p := (*[2]byte)(unsafe.Pointer(&sa.raw.Port))
- p[0] = byte(sa.Port >> 8)
- p[1] = byte(sa.Port)
- for i := 0; i < len(sa.Addr); i++ {
- sa.raw.Addr[i] = sa.Addr[i]
- }
- return unsafe.Pointer(&sa.raw), SizeofSockaddrInet4, nil
-}
-
-func (sa *SockaddrInet6) sockaddr() (unsafe.Pointer, _Socklen, error) {
- if sa.Port < 0 || sa.Port > 0xFFFF {
- return nil, 0, EINVAL
- }
- sa.raw.Family = AF_INET6
- p := (*[2]byte)(unsafe.Pointer(&sa.raw.Port))
- p[0] = byte(sa.Port >> 8)
- p[1] = byte(sa.Port)
- sa.raw.Scope_id = sa.ZoneId
- for i := 0; i < len(sa.Addr); i++ {
- sa.raw.Addr[i] = sa.Addr[i]
- }
- return unsafe.Pointer(&sa.raw), SizeofSockaddrInet6, nil
-}
-
-func (sa *SockaddrUnix) sockaddr() (unsafe.Pointer, _Socklen, error) {
- name := sa.Name
- n := len(name)
- if n >= len(sa.raw.Path) {
- return nil, 0, EINVAL
- }
- sa.raw.Family = AF_UNIX
- for i := 0; i < n; i++ {
- sa.raw.Path[i] = int8(name[i])
- }
- // length is family (uint16), name, NUL.
- sl := _Socklen(2)
- if n > 0 {
- sl += _Socklen(n) + 1
- }
- if sa.raw.Path[0] == '@' {
- sa.raw.Path[0] = 0
- // Don't count trailing NUL for abstract address.
- sl--
- }
-
- return unsafe.Pointer(&sa.raw), sl, nil
-}
-
-type SockaddrLinklayer struct {
- Protocol uint16
- Ifindex int
- Hatype uint16
- Pkttype uint8
- Halen uint8
- Addr [8]byte
- raw RawSockaddrLinklayer
-}
-
-func (sa *SockaddrLinklayer) sockaddr() (unsafe.Pointer, _Socklen, error) {
- if sa.Ifindex < 0 || sa.Ifindex > 0x7fffffff {
- return nil, 0, EINVAL
- }
- sa.raw.Family = AF_PACKET
- sa.raw.Protocol = sa.Protocol
- sa.raw.Ifindex = int32(sa.Ifindex)
- sa.raw.Hatype = sa.Hatype
- sa.raw.Pkttype = sa.Pkttype
- sa.raw.Halen = sa.Halen
- for i := 0; i < len(sa.Addr); i++ {
- sa.raw.Addr[i] = sa.Addr[i]
- }
- return unsafe.Pointer(&sa.raw), SizeofSockaddrLinklayer, nil
-}
-
-type SockaddrNetlink struct {
- Family uint16
- Pad uint16
- Pid uint32
- Groups uint32
- raw RawSockaddrNetlink
-}
-
-func (sa *SockaddrNetlink) sockaddr() (unsafe.Pointer, _Socklen, error) {
- sa.raw.Family = AF_NETLINK
- sa.raw.Pad = sa.Pad
- sa.raw.Pid = sa.Pid
- sa.raw.Groups = sa.Groups
- return unsafe.Pointer(&sa.raw), SizeofSockaddrNetlink, nil
-}
-
-type SockaddrHCI struct {
- Dev uint16
- Channel uint16
- raw RawSockaddrHCI
-}
-
-func (sa *SockaddrHCI) sockaddr() (unsafe.Pointer, _Socklen, error) {
- sa.raw.Family = AF_BLUETOOTH
- sa.raw.Dev = sa.Dev
- sa.raw.Channel = sa.Channel
- return unsafe.Pointer(&sa.raw), SizeofSockaddrHCI, nil
-}
-
-// SockaddrCAN implements the Sockaddr interface for AF_CAN type sockets.
-// The RxID and TxID fields are used for transport protocol addressing in
-// (CAN_TP16, CAN_TP20, CAN_MCNET, and CAN_ISOTP), they can be left with
-// zero values for CAN_RAW and CAN_BCM sockets as they have no meaning.
-//
-// The SockaddrCAN struct must be bound to the socket file descriptor
-// using Bind before the CAN socket can be used.
-//
-// // Read one raw CAN frame
-// fd, _ := Socket(AF_CAN, SOCK_RAW, CAN_RAW)
-// addr := &SockaddrCAN{Ifindex: index}
-// Bind(fd, addr)
-// frame := make([]byte, 16)
-// Read(fd, frame)
-//
-// The full SocketCAN documentation can be found in the linux kernel
-// archives at: https://www.kernel.org/doc/Documentation/networking/can.txt
-type SockaddrCAN struct {
- Ifindex int
- RxID uint32
- TxID uint32
- raw RawSockaddrCAN
-}
-
-func (sa *SockaddrCAN) sockaddr() (unsafe.Pointer, _Socklen, error) {
- if sa.Ifindex < 0 || sa.Ifindex > 0x7fffffff {
- return nil, 0, EINVAL
- }
- sa.raw.Family = AF_CAN
- sa.raw.Ifindex = int32(sa.Ifindex)
- rx := (*[4]byte)(unsafe.Pointer(&sa.RxID))
- for i := 0; i < 4; i++ {
- sa.raw.Addr[i] = rx[i]
- }
- tx := (*[4]byte)(unsafe.Pointer(&sa.TxID))
- for i := 0; i < 4; i++ {
- sa.raw.Addr[i+4] = tx[i]
- }
- return unsafe.Pointer(&sa.raw), SizeofSockaddrCAN, nil
-}
-
-// SockaddrALG implements the Sockaddr interface for AF_ALG type sockets.
-// SockaddrALG enables userspace access to the Linux kernel's cryptography
-// subsystem. The Type and Name fields specify which type of hash or cipher
-// should be used with a given socket.
-//
-// To create a file descriptor that provides access to a hash or cipher, both
-// Bind and Accept must be used. Once the setup process is complete, input
-// data can be written to the socket, processed by the kernel, and then read
-// back as hash output or ciphertext.
-//
-// Here is an example of using an AF_ALG socket with SHA1 hashing.
-// The initial socket setup process is as follows:
-//
-// // Open a socket to perform SHA1 hashing.
-// fd, _ := unix.Socket(unix.AF_ALG, unix.SOCK_SEQPACKET, 0)
-// addr := &unix.SockaddrALG{Type: "hash", Name: "sha1"}
-// unix.Bind(fd, addr)
-// // Note: unix.Accept does not work at this time; must invoke accept()
-// // manually using unix.Syscall.
-// hashfd, _, _ := unix.Syscall(unix.SYS_ACCEPT, uintptr(fd), 0, 0)
-//
-// Once a file descriptor has been returned from Accept, it may be used to
-// perform SHA1 hashing. The descriptor is not safe for concurrent use, but
-// may be re-used repeatedly with subsequent Write and Read operations.
-//
-// When hashing a small byte slice or string, a single Write and Read may
-// be used:
-//
-// // Assume hashfd is already configured using the setup process.
-// hash := os.NewFile(hashfd, "sha1")
-// // Hash an input string and read the results. Each Write discards
-// // previous hash state. Read always reads the current state.
-// b := make([]byte, 20)
-// for i := 0; i < 2; i++ {
-// io.WriteString(hash, "Hello, world.")
-// hash.Read(b)
-// fmt.Println(hex.EncodeToString(b))
-// }
-// // Output:
-// // 2ae01472317d1935a84797ec1983ae243fc6aa28
-// // 2ae01472317d1935a84797ec1983ae243fc6aa28
-//
-// For hashing larger byte slices, or byte streams such as those read from
-// a file or socket, use Sendto with MSG_MORE to instruct the kernel to update
-// the hash digest instead of creating a new one for a given chunk and finalizing it.
-//
-// // Assume hashfd and addr are already configured using the setup process.
-// hash := os.NewFile(hashfd, "sha1")
-// // Hash the contents of a file.
-// f, _ := os.Open("/tmp/linux-4.10-rc7.tar.xz")
-// b := make([]byte, 4096)
-// for {
-// n, err := f.Read(b)
-// if err == io.EOF {
-// break
-// }
-// unix.Sendto(hashfd, b[:n], unix.MSG_MORE, addr)
-// }
-// hash.Read(b)
-// fmt.Println(hex.EncodeToString(b))
-// // Output: 85cdcad0c06eef66f805ecce353bec9accbeecc5
-//
-// For more information, see: http://www.chronox.de/crypto-API/crypto/userspace-if.html.
-type SockaddrALG struct {
- Type string
- Name string
- Feature uint32
- Mask uint32
- raw RawSockaddrALG
-}
-
-func (sa *SockaddrALG) sockaddr() (unsafe.Pointer, _Socklen, error) {
- // Leave room for NUL byte terminator.
- if len(sa.Type) > 13 {
- return nil, 0, EINVAL
- }
- if len(sa.Name) > 63 {
- return nil, 0, EINVAL
- }
-
- sa.raw.Family = AF_ALG
- sa.raw.Feat = sa.Feature
- sa.raw.Mask = sa.Mask
-
- typ, err := ByteSliceFromString(sa.Type)
- if err != nil {
- return nil, 0, err
- }
- name, err := ByteSliceFromString(sa.Name)
- if err != nil {
- return nil, 0, err
- }
-
- copy(sa.raw.Type[:], typ)
- copy(sa.raw.Name[:], name)
-
- return unsafe.Pointer(&sa.raw), SizeofSockaddrALG, nil
-}
-
-// SockaddrVM implements the Sockaddr interface for AF_VSOCK type sockets.
-// SockaddrVM provides access to Linux VM sockets: a mechanism that enables
-// bidirectional communication between a hypervisor and its guest virtual
-// machines.
-type SockaddrVM struct {
- // CID and Port specify a context ID and port address for a VM socket.
- // Guests have a unique CID, and hosts may have a well-known CID of:
- // - VMADDR_CID_HYPERVISOR: refers to the hypervisor process.
- // - VMADDR_CID_HOST: refers to other processes on the host.
- CID uint32
- Port uint32
- raw RawSockaddrVM
-}
-
-func (sa *SockaddrVM) sockaddr() (unsafe.Pointer, _Socklen, error) {
- sa.raw.Family = AF_VSOCK
- sa.raw.Port = sa.Port
- sa.raw.Cid = sa.CID
-
- return unsafe.Pointer(&sa.raw), SizeofSockaddrVM, nil
-}
-
-func anyToSockaddr(rsa *RawSockaddrAny) (Sockaddr, error) {
- switch rsa.Addr.Family {
- case AF_NETLINK:
- pp := (*RawSockaddrNetlink)(unsafe.Pointer(rsa))
- sa := new(SockaddrNetlink)
- sa.Family = pp.Family
- sa.Pad = pp.Pad
- sa.Pid = pp.Pid
- sa.Groups = pp.Groups
- return sa, nil
-
- case AF_PACKET:
- pp := (*RawSockaddrLinklayer)(unsafe.Pointer(rsa))
- sa := new(SockaddrLinklayer)
- sa.Protocol = pp.Protocol
- sa.Ifindex = int(pp.Ifindex)
- sa.Hatype = pp.Hatype
- sa.Pkttype = pp.Pkttype
- sa.Halen = pp.Halen
- for i := 0; i < len(sa.Addr); i++ {
- sa.Addr[i] = pp.Addr[i]
- }
- return sa, nil
-
- case AF_UNIX:
- pp := (*RawSockaddrUnix)(unsafe.Pointer(rsa))
- sa := new(SockaddrUnix)
- if pp.Path[0] == 0 {
- // "Abstract" Unix domain socket.
- // Rewrite leading NUL as @ for textual display.
- // (This is the standard convention.)
- // Not friendly to overwrite in place,
- // but the callers below don't care.
- pp.Path[0] = '@'
- }
-
- // Assume path ends at NUL.
- // This is not technically the Linux semantics for
- // abstract Unix domain sockets--they are supposed
- // to be uninterpreted fixed-size binary blobs--but
- // everyone uses this convention.
- n := 0
- for n < len(pp.Path) && pp.Path[n] != 0 {
- n++
- }
- bytes := (*[10000]byte)(unsafe.Pointer(&pp.Path[0]))[0:n]
- sa.Name = string(bytes)
- return sa, nil
-
- case AF_INET:
- pp := (*RawSockaddrInet4)(unsafe.Pointer(rsa))
- sa := new(SockaddrInet4)
- p := (*[2]byte)(unsafe.Pointer(&pp.Port))
- sa.Port = int(p[0])<<8 + int(p[1])
- for i := 0; i < len(sa.Addr); i++ {
- sa.Addr[i] = pp.Addr[i]
- }
- return sa, nil
-
- case AF_INET6:
- pp := (*RawSockaddrInet6)(unsafe.Pointer(rsa))
- sa := new(SockaddrInet6)
- p := (*[2]byte)(unsafe.Pointer(&pp.Port))
- sa.Port = int(p[0])<<8 + int(p[1])
- sa.ZoneId = pp.Scope_id
- for i := 0; i < len(sa.Addr); i++ {
- sa.Addr[i] = pp.Addr[i]
- }
- return sa, nil
-
- case AF_VSOCK:
- pp := (*RawSockaddrVM)(unsafe.Pointer(rsa))
- sa := &SockaddrVM{
- CID: pp.Cid,
- Port: pp.Port,
- }
- return sa, nil
- }
- return nil, EAFNOSUPPORT
-}
-
-func Accept(fd int) (nfd int, sa Sockaddr, err error) {
- var rsa RawSockaddrAny
- var len _Socklen = SizeofSockaddrAny
- nfd, err = accept(fd, &rsa, &len)
- if err != nil {
- return
- }
- sa, err = anyToSockaddr(&rsa)
- if err != nil {
- Close(nfd)
- nfd = 0
- }
- return
-}
-
-func Accept4(fd int, flags int) (nfd int, sa Sockaddr, err error) {
- var rsa RawSockaddrAny
- var len _Socklen = SizeofSockaddrAny
- nfd, err = accept4(fd, &rsa, &len, flags)
- if err != nil {
- return
- }
- if len > SizeofSockaddrAny {
- panic("RawSockaddrAny too small")
- }
- sa, err = anyToSockaddr(&rsa)
- if err != nil {
- Close(nfd)
- nfd = 0
- }
- return
-}
-
-func Getsockname(fd int) (sa Sockaddr, err error) {
- var rsa RawSockaddrAny
- var len _Socklen = SizeofSockaddrAny
- if err = getsockname(fd, &rsa, &len); err != nil {
- return
- }
- return anyToSockaddr(&rsa)
-}
-
-func GetsockoptInet4Addr(fd, level, opt int) (value [4]byte, err error) {
- vallen := _Socklen(4)
- err = getsockopt(fd, level, opt, unsafe.Pointer(&value[0]), &vallen)
- return value, err
-}
-
-func GetsockoptIPMreq(fd, level, opt int) (*IPMreq, error) {
- var value IPMreq
- vallen := _Socklen(SizeofIPMreq)
- err := getsockopt(fd, level, opt, unsafe.Pointer(&value), &vallen)
- return &value, err
-}
-
-func GetsockoptIPMreqn(fd, level, opt int) (*IPMreqn, error) {
- var value IPMreqn
- vallen := _Socklen(SizeofIPMreqn)
- err := getsockopt(fd, level, opt, unsafe.Pointer(&value), &vallen)
- return &value, err
-}
-
-func GetsockoptIPv6Mreq(fd, level, opt int) (*IPv6Mreq, error) {
- var value IPv6Mreq
- vallen := _Socklen(SizeofIPv6Mreq)
- err := getsockopt(fd, level, opt, unsafe.Pointer(&value), &vallen)
- return &value, err
-}
-
-func GetsockoptIPv6MTUInfo(fd, level, opt int) (*IPv6MTUInfo, error) {
- var value IPv6MTUInfo
- vallen := _Socklen(SizeofIPv6MTUInfo)
- err := getsockopt(fd, level, opt, unsafe.Pointer(&value), &vallen)
- return &value, err
-}
-
-func GetsockoptICMPv6Filter(fd, level, opt int) (*ICMPv6Filter, error) {
- var value ICMPv6Filter
- vallen := _Socklen(SizeofICMPv6Filter)
- err := getsockopt(fd, level, opt, unsafe.Pointer(&value), &vallen)
- return &value, err
-}
-
-func GetsockoptUcred(fd, level, opt int) (*Ucred, error) {
- var value Ucred
- vallen := _Socklen(SizeofUcred)
- err := getsockopt(fd, level, opt, unsafe.Pointer(&value), &vallen)
- return &value, err
-}
-
-func GetsockoptTCPInfo(fd, level, opt int) (*TCPInfo, error) {
- var value TCPInfo
- vallen := _Socklen(SizeofTCPInfo)
- err := getsockopt(fd, level, opt, unsafe.Pointer(&value), &vallen)
- return &value, err
-}
-
-func SetsockoptIPMreqn(fd, level, opt int, mreq *IPMreqn) (err error) {
- return setsockopt(fd, level, opt, unsafe.Pointer(mreq), unsafe.Sizeof(*mreq))
-}
-
-// Keyctl Commands (http://man7.org/linux/man-pages/man2/keyctl.2.html)
-
-// KeyctlInt calls keyctl commands in which each argument is an int.
-// These commands are KEYCTL_REVOKE, KEYCTL_CHOWN, KEYCTL_CLEAR, KEYCTL_LINK,
-// KEYCTL_UNLINK, KEYCTL_NEGATE, KEYCTL_SET_REQKEY_KEYRING, KEYCTL_SET_TIMEOUT,
-// KEYCTL_ASSUME_AUTHORITY, KEYCTL_SESSION_TO_PARENT, KEYCTL_REJECT,
-// KEYCTL_INVALIDATE, and KEYCTL_GET_PERSISTENT.
-//sys KeyctlInt(cmd int, arg2 int, arg3 int, arg4 int, arg5 int) (ret int, err error) = SYS_KEYCTL
-
-// KeyctlBuffer calls keyctl commands in which the third and fourth
-// arguments are a buffer and its length, respectively.
-// These commands are KEYCTL_UPDATE, KEYCTL_READ, and KEYCTL_INSTANTIATE.
-//sys KeyctlBuffer(cmd int, arg2 int, buf []byte, arg5 int) (ret int, err error) = SYS_KEYCTL
-
-// KeyctlString calls keyctl commands which return a string.
-// These commands are KEYCTL_DESCRIBE and KEYCTL_GET_SECURITY.
-func KeyctlString(cmd int, id int) (string, error) {
- // We must loop as the string data may change in between the syscalls.
- // We could allocate a large buffer here to reduce the chance that the
- // syscall needs to be called twice; however, this is unnecessary as
- // the performance loss is negligible.
- var buffer []byte
- for {
- // Try to fill the buffer with data
- length, err := KeyctlBuffer(cmd, id, buffer, 0)
- if err != nil {
- return "", err
- }
-
- // Check if the data was written
- if length <= len(buffer) {
- // Exclude the null terminator
- return string(buffer[:length-1]), nil
- }
-
- // Make a bigger buffer if needed
- buffer = make([]byte, length)
- }
-}
-
-// Keyctl commands with special signatures.
-
-// KeyctlGetKeyringID implements the KEYCTL_GET_KEYRING_ID command.
-// See the full documentation at:
-// http://man7.org/linux/man-pages/man3/keyctl_get_keyring_ID.3.html
-func KeyctlGetKeyringID(id int, create bool) (ringid int, err error) {
- createInt := 0
- if create {
- createInt = 1
- }
- return KeyctlInt(KEYCTL_GET_KEYRING_ID, id, createInt, 0, 0)
-}
-
-// KeyctlSetperm implements the KEYCTL_SETPERM command. The perm value is the
-// key handle permission mask as described in the "keyctl setperm" section of
-// http://man7.org/linux/man-pages/man1/keyctl.1.html.
-// See the full documentation at:
-// http://man7.org/linux/man-pages/man3/keyctl_setperm.3.html
-func KeyctlSetperm(id int, perm uint32) error {
- _, err := KeyctlInt(KEYCTL_SETPERM, id, int(perm), 0, 0)
- return err
-}
-
-//sys keyctlJoin(cmd int, arg2 string) (ret int, err error) = SYS_KEYCTL
-
-// KeyctlJoinSessionKeyring implements the KEYCTL_JOIN_SESSION_KEYRING command.
-// See the full documentation at:
-// http://man7.org/linux/man-pages/man3/keyctl_join_session_keyring.3.html
-func KeyctlJoinSessionKeyring(name string) (ringid int, err error) {
- return keyctlJoin(KEYCTL_JOIN_SESSION_KEYRING, name)
-}
-
-//sys keyctlSearch(cmd int, arg2 int, arg3 string, arg4 string, arg5 int) (ret int, err error) = SYS_KEYCTL
-
-// KeyctlSearch implements the KEYCTL_SEARCH command.
-// See the full documentation at:
-// http://man7.org/linux/man-pages/man3/keyctl_search.3.html
-func KeyctlSearch(ringid int, keyType, description string, destRingid int) (id int, err error) {
- return keyctlSearch(KEYCTL_SEARCH, ringid, keyType, description, destRingid)
-}
-
-//sys keyctlIOV(cmd int, arg2 int, payload []Iovec, arg5 int) (err error) = SYS_KEYCTL
-
-// KeyctlInstantiateIOV implements the KEYCTL_INSTANTIATE_IOV command. This
-// command is similar to KEYCTL_INSTANTIATE, except that the payload is a slice
-// of Iovec (each of which represents a buffer) instead of a single buffer.
-// See the full documentation at:
-// http://man7.org/linux/man-pages/man3/keyctl_instantiate_iov.3.html
-func KeyctlInstantiateIOV(id int, payload []Iovec, ringid int) error {
- return keyctlIOV(KEYCTL_INSTANTIATE_IOV, id, payload, ringid)
-}
-
-//sys keyctlDH(cmd int, arg2 *KeyctlDHParams, buf []byte) (ret int, err error) = SYS_KEYCTL
-
-// KeyctlDHCompute implements the KEYCTL_DH_COMPUTE command. This command
-// computes a Diffie-Hellman shared secret based on the provide params. The
-// secret is written to the provided buffer and the returned size is the number
-// of bytes written (returning an error if there is insufficient space in the
-// buffer). If a nil buffer is passed in, this function returns the minimum
-// buffer length needed to store the appropriate data. Note that this differs
-// from KEYCTL_READ's behavior which always returns the requested payload size.
-// See the full documentation at:
-// http://man7.org/linux/man-pages/man3/keyctl_dh_compute.3.html
-func KeyctlDHCompute(params *KeyctlDHParams, buffer []byte) (size int, err error) {
- return keyctlDH(KEYCTL_DH_COMPUTE, params, buffer)
-}
-
-func Recvmsg(fd int, p, oob []byte, flags int) (n, oobn int, recvflags int, from Sockaddr, err error) {
- var msg Msghdr
- var rsa RawSockaddrAny
- msg.Name = (*byte)(unsafe.Pointer(&rsa))
- msg.Namelen = uint32(SizeofSockaddrAny)
- var iov Iovec
- if len(p) > 0 {
- iov.Base = (*byte)(unsafe.Pointer(&p[0]))
- iov.SetLen(len(p))
- }
- var dummy byte
- if len(oob) > 0 {
- var sockType int
- sockType, err = GetsockoptInt(fd, SOL_SOCKET, SO_TYPE)
- if err != nil {
- return
- }
- // receive at least one normal byte
- if sockType != SOCK_DGRAM && len(p) == 0 {
- iov.Base = &dummy
- iov.SetLen(1)
- }
- msg.Control = (*byte)(unsafe.Pointer(&oob[0]))
- msg.SetControllen(len(oob))
- }
- msg.Iov = &iov
- msg.Iovlen = 1
- if n, err = recvmsg(fd, &msg, flags); err != nil {
- return
- }
- oobn = int(msg.Controllen)
- recvflags = int(msg.Flags)
- // source address is only specified if the socket is unconnected
- if rsa.Addr.Family != AF_UNSPEC {
- from, err = anyToSockaddr(&rsa)
- }
- return
-}
-
-func Sendmsg(fd int, p, oob []byte, to Sockaddr, flags int) (err error) {
- _, err = SendmsgN(fd, p, oob, to, flags)
- return
-}
-
-func SendmsgN(fd int, p, oob []byte, to Sockaddr, flags int) (n int, err error) {
- var ptr unsafe.Pointer
- var salen _Socklen
- if to != nil {
- var err error
- ptr, salen, err = to.sockaddr()
- if err != nil {
- return 0, err
- }
- }
- var msg Msghdr
- msg.Name = (*byte)(unsafe.Pointer(ptr))
- msg.Namelen = uint32(salen)
- var iov Iovec
- if len(p) > 0 {
- iov.Base = (*byte)(unsafe.Pointer(&p[0]))
- iov.SetLen(len(p))
- }
- var dummy byte
- if len(oob) > 0 {
- var sockType int
- sockType, err = GetsockoptInt(fd, SOL_SOCKET, SO_TYPE)
- if err != nil {
- return 0, err
- }
- // send at least one normal byte
- if sockType != SOCK_DGRAM && len(p) == 0 {
- iov.Base = &dummy
- iov.SetLen(1)
- }
- msg.Control = (*byte)(unsafe.Pointer(&oob[0]))
- msg.SetControllen(len(oob))
- }
- msg.Iov = &iov
- msg.Iovlen = 1
- if n, err = sendmsg(fd, &msg, flags); err != nil {
- return 0, err
- }
- if len(oob) > 0 && len(p) == 0 {
- n = 0
- }
- return n, nil
-}
-
-// BindToDevice binds the socket associated with fd to device.
-func BindToDevice(fd int, device string) (err error) {
- return SetsockoptString(fd, SOL_SOCKET, SO_BINDTODEVICE, device)
-}
-
-//sys ptrace(request int, pid int, addr uintptr, data uintptr) (err error)
-
-func ptracePeek(req int, pid int, addr uintptr, out []byte) (count int, err error) {
- // The peek requests are machine-size oriented, so we wrap it
- // to retrieve arbitrary-length data.
-
- // The ptrace syscall differs from glibc's ptrace.
- // Peeks returns the word in *data, not as the return value.
-
- var buf [sizeofPtr]byte
-
- // Leading edge. PEEKTEXT/PEEKDATA don't require aligned
- // access (PEEKUSER warns that it might), but if we don't
- // align our reads, we might straddle an unmapped page
- // boundary and not get the bytes leading up to the page
- // boundary.
- n := 0
- if addr%sizeofPtr != 0 {
- err = ptrace(req, pid, addr-addr%sizeofPtr, uintptr(unsafe.Pointer(&buf[0])))
- if err != nil {
- return 0, err
- }
- n += copy(out, buf[addr%sizeofPtr:])
- out = out[n:]
- }
-
- // Remainder.
- for len(out) > 0 {
- // We use an internal buffer to guarantee alignment.
- // It's not documented if this is necessary, but we're paranoid.
- err = ptrace(req, pid, addr+uintptr(n), uintptr(unsafe.Pointer(&buf[0])))
- if err != nil {
- return n, err
- }
- copied := copy(out, buf[0:])
- n += copied
- out = out[copied:]
- }
-
- return n, nil
-}
-
-func PtracePeekText(pid int, addr uintptr, out []byte) (count int, err error) {
- return ptracePeek(PTRACE_PEEKTEXT, pid, addr, out)
-}
-
-func PtracePeekData(pid int, addr uintptr, out []byte) (count int, err error) {
- return ptracePeek(PTRACE_PEEKDATA, pid, addr, out)
-}
-
-func PtracePeekUser(pid int, addr uintptr, out []byte) (count int, err error) {
- return ptracePeek(PTRACE_PEEKUSR, pid, addr, out)
-}
-
-func ptracePoke(pokeReq int, peekReq int, pid int, addr uintptr, data []byte) (count int, err error) {
- // As for ptracePeek, we need to align our accesses to deal
- // with the possibility of straddling an invalid page.
-
- // Leading edge.
- n := 0
- if addr%sizeofPtr != 0 {
- var buf [sizeofPtr]byte
- err = ptrace(peekReq, pid, addr-addr%sizeofPtr, uintptr(unsafe.Pointer(&buf[0])))
- if err != nil {
- return 0, err
- }
- n += copy(buf[addr%sizeofPtr:], data)
- word := *((*uintptr)(unsafe.Pointer(&buf[0])))
- err = ptrace(pokeReq, pid, addr-addr%sizeofPtr, word)
- if err != nil {
- return 0, err
- }
- data = data[n:]
- }
-
- // Interior.
- for len(data) > sizeofPtr {
- word := *((*uintptr)(unsafe.Pointer(&data[0])))
- err = ptrace(pokeReq, pid, addr+uintptr(n), word)
- if err != nil {
- return n, err
- }
- n += sizeofPtr
- data = data[sizeofPtr:]
- }
-
- // Trailing edge.
- if len(data) > 0 {
- var buf [sizeofPtr]byte
- err = ptrace(peekReq, pid, addr+uintptr(n), uintptr(unsafe.Pointer(&buf[0])))
- if err != nil {
- return n, err
- }
- copy(buf[0:], data)
- word := *((*uintptr)(unsafe.Pointer(&buf[0])))
- err = ptrace(pokeReq, pid, addr+uintptr(n), word)
- if err != nil {
- return n, err
- }
- n += len(data)
- }
-
- return n, nil
-}
-
-func PtracePokeText(pid int, addr uintptr, data []byte) (count int, err error) {
- return ptracePoke(PTRACE_POKETEXT, PTRACE_PEEKTEXT, pid, addr, data)
-}
-
-func PtracePokeData(pid int, addr uintptr, data []byte) (count int, err error) {
- return ptracePoke(PTRACE_POKEDATA, PTRACE_PEEKDATA, pid, addr, data)
-}
-
-func PtraceGetRegs(pid int, regsout *PtraceRegs) (err error) {
- return ptrace(PTRACE_GETREGS, pid, 0, uintptr(unsafe.Pointer(regsout)))
-}
-
-func PtraceSetRegs(pid int, regs *PtraceRegs) (err error) {
- return ptrace(PTRACE_SETREGS, pid, 0, uintptr(unsafe.Pointer(regs)))
-}
-
-func PtraceSetOptions(pid int, options int) (err error) {
- return ptrace(PTRACE_SETOPTIONS, pid, 0, uintptr(options))
-}
-
-func PtraceGetEventMsg(pid int) (msg uint, err error) {
- var data _C_long
- err = ptrace(PTRACE_GETEVENTMSG, pid, 0, uintptr(unsafe.Pointer(&data)))
- msg = uint(data)
- return
-}
-
-func PtraceCont(pid int, signal int) (err error) {
- return ptrace(PTRACE_CONT, pid, 0, uintptr(signal))
-}
-
-func PtraceSyscall(pid int, signal int) (err error) {
- return ptrace(PTRACE_SYSCALL, pid, 0, uintptr(signal))
-}
-
-func PtraceSingleStep(pid int) (err error) { return ptrace(PTRACE_SINGLESTEP, pid, 0, 0) }
-
-func PtraceAttach(pid int) (err error) { return ptrace(PTRACE_ATTACH, pid, 0, 0) }
-
-func PtraceDetach(pid int) (err error) { return ptrace(PTRACE_DETACH, pid, 0, 0) }
-
-//sys reboot(magic1 uint, magic2 uint, cmd int, arg string) (err error)
-
-func Reboot(cmd int) (err error) {
- return reboot(LINUX_REBOOT_MAGIC1, LINUX_REBOOT_MAGIC2, cmd, "")
-}
-
-func ReadDirent(fd int, buf []byte) (n int, err error) {
- return Getdents(fd, buf)
-}
-
-func direntIno(buf []byte) (uint64, bool) {
- return readInt(buf, unsafe.Offsetof(Dirent{}.Ino), unsafe.Sizeof(Dirent{}.Ino))
-}
-
-func direntReclen(buf []byte) (uint64, bool) {
- return readInt(buf, unsafe.Offsetof(Dirent{}.Reclen), unsafe.Sizeof(Dirent{}.Reclen))
-}
-
-func direntNamlen(buf []byte) (uint64, bool) {
- reclen, ok := direntReclen(buf)
- if !ok {
- return 0, false
- }
- return reclen - uint64(unsafe.Offsetof(Dirent{}.Name)), true
-}
-
-//sys mount(source string, target string, fstype string, flags uintptr, data *byte) (err error)
-
-func Mount(source string, target string, fstype string, flags uintptr, data string) (err error) {
- // Certain file systems get rather angry and EINVAL if you give
- // them an empty string of data, rather than NULL.
- if data == "" {
- return mount(source, target, fstype, flags, nil)
- }
- datap, err := BytePtrFromString(data)
- if err != nil {
- return err
- }
- return mount(source, target, fstype, flags, datap)
-}
-
-// Sendto
-// Recvfrom
-// Socketpair
-
-/*
- * Direct access
- */
-//sys Acct(path string) (err error)
-//sys AddKey(keyType string, description string, payload []byte, ringid int) (id int, err error)
-//sys Adjtimex(buf *Timex) (state int, err error)
-//sys Chdir(path string) (err error)
-//sys Chroot(path string) (err error)
-//sys ClockGettime(clockid int32, time *Timespec) (err error)
-//sys Close(fd int) (err error)
-//sys CopyFileRange(rfd int, roff *int64, wfd int, woff *int64, len int, flags int) (n int, err error)
-//sys Dup(oldfd int) (fd int, err error)
-//sys Dup3(oldfd int, newfd int, flags int) (err error)
-//sysnb EpollCreate(size int) (fd int, err error)
-//sysnb EpollCreate1(flag int) (fd int, err error)
-//sysnb EpollCtl(epfd int, op int, fd int, event *EpollEvent) (err error)
-//sys Eventfd(initval uint, flags int) (fd int, err error) = SYS_EVENTFD2
-//sys Exit(code int) = SYS_EXIT_GROUP
-//sys Faccessat(dirfd int, path string, mode uint32, flags int) (err error)
-//sys Fallocate(fd int, mode uint32, off int64, len int64) (err error)
-//sys Fchdir(fd int) (err error)
-//sys Fchmod(fd int, mode uint32) (err error)
-//sys Fchownat(dirfd int, path string, uid int, gid int, flags int) (err error)
-//sys fcntl(fd int, cmd int, arg int) (val int, err error)
-//sys Fdatasync(fd int) (err error)
-//sys Flock(fd int, how int) (err error)
-//sys Fsync(fd int) (err error)
-//sys Getdents(fd int, buf []byte) (n int, err error) = SYS_GETDENTS64
-//sysnb Getpgid(pid int) (pgid int, err error)
-
-func Getpgrp() (pid int) {
- pid, _ = Getpgid(0)
- return
-}
-
-//sysnb Getpid() (pid int)
-//sysnb Getppid() (ppid int)
-//sys Getpriority(which int, who int) (prio int, err error)
-//sys Getrandom(buf []byte, flags int) (n int, err error)
-//sysnb Getrusage(who int, rusage *Rusage) (err error)
-//sysnb Getsid(pid int) (sid int, err error)
-//sysnb Gettid() (tid int)
-//sys Getxattr(path string, attr string, dest []byte) (sz int, err error)
-//sys InotifyAddWatch(fd int, pathname string, mask uint32) (watchdesc int, err error)
-//sysnb InotifyInit1(flags int) (fd int, err error)
-//sysnb InotifyRmWatch(fd int, watchdesc uint32) (success int, err error)
-//sysnb Kill(pid int, sig syscall.Signal) (err error)
-//sys Klogctl(typ int, buf []byte) (n int, err error) = SYS_SYSLOG
-//sys Lgetxattr(path string, attr string, dest []byte) (sz int, err error)
-//sys Listxattr(path string, dest []byte) (sz int, err error)
-//sys Llistxattr(path string, dest []byte) (sz int, err error)
-//sys Lremovexattr(path string, attr string) (err error)
-//sys Lsetxattr(path string, attr string, data []byte, flags int) (err error)
-//sys Mkdirat(dirfd int, path string, mode uint32) (err error)
-//sys Mknodat(dirfd int, path string, mode uint32, dev int) (err error)
-//sys Nanosleep(time *Timespec, leftover *Timespec) (err error)
-//sys PivotRoot(newroot string, putold string) (err error) = SYS_PIVOT_ROOT
-//sysnb prlimit(pid int, resource int, newlimit *Rlimit, old *Rlimit) (err error) = SYS_PRLIMIT64
-//sys Prctl(option int, arg2 uintptr, arg3 uintptr, arg4 uintptr, arg5 uintptr) (err error)
-//sys read(fd int, p []byte) (n int, err error)
-//sys Removexattr(path string, attr string) (err error)
-//sys Renameat(olddirfd int, oldpath string, newdirfd int, newpath string) (err error)
-//sys RequestKey(keyType string, description string, callback string, destRingid int) (id int, err error)
-//sys Setdomainname(p []byte) (err error)
-//sys Sethostname(p []byte) (err error)
-//sysnb Setpgid(pid int, pgid int) (err error)
-//sysnb Setsid() (pid int, err error)
-//sysnb Settimeofday(tv *Timeval) (err error)
-//sys Setns(fd int, nstype int) (err error)
-
-// issue 1435.
-// On linux Setuid and Setgid only affects the current thread, not the process.
-// This does not match what most callers expect so we must return an error
-// here rather than letting the caller think that the call succeeded.
-
-func Setuid(uid int) (err error) {
- return EOPNOTSUPP
-}
-
-func Setgid(uid int) (err error) {
- return EOPNOTSUPP
-}
-
-//sys Setpriority(which int, who int, prio int) (err error)
-//sys Setxattr(path string, attr string, data []byte, flags int) (err error)
-//sys Sync()
-//sys Syncfs(fd int) (err error)
-//sysnb Sysinfo(info *Sysinfo_t) (err error)
-//sys Tee(rfd int, wfd int, len int, flags int) (n int64, err error)
-//sysnb Tgkill(tgid int, tid int, sig syscall.Signal) (err error)
-//sysnb Times(tms *Tms) (ticks uintptr, err error)
-//sysnb Umask(mask int) (oldmask int)
-//sysnb Uname(buf *Utsname) (err error)
-//sys Unmount(target string, flags int) (err error) = SYS_UMOUNT2
-//sys Unshare(flags int) (err error)
-//sys Ustat(dev int, ubuf *Ustat_t) (err error)
-//sys write(fd int, p []byte) (n int, err error)
-//sys exitThread(code int) (err error) = SYS_EXIT
-//sys readlen(fd int, p *byte, np int) (n int, err error) = SYS_READ
-//sys writelen(fd int, p *byte, np int) (n int, err error) = SYS_WRITE
-
-// mmap varies by architecture; see syscall_linux_*.go.
-//sys munmap(addr uintptr, length uintptr) (err error)
-
-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 Madvise(b []byte, advice int) (err error)
-//sys Mprotect(b []byte, prot int) (err error)
-//sys Mlock(b []byte) (err error)
-//sys Mlockall(flags int) (err error)
-//sys Msync(b []byte, flags int) (err error)
-//sys Munlock(b []byte) (err error)
-//sys Munlockall() (err error)
-
-// Vmsplice splices user pages from a slice of Iovecs into a pipe specified by fd,
-// using the specified flags.
-func Vmsplice(fd int, iovs []Iovec, flags int) (int, error) {
- n, _, errno := Syscall6(
- SYS_VMSPLICE,
- uintptr(fd),
- uintptr(unsafe.Pointer(&iovs[0])),
- uintptr(len(iovs)),
- uintptr(flags),
- 0,
- 0,
- )
- if errno != 0 {
- return 0, syscall.Errno(errno)
- }
-
- return int(n), nil
-}
-
-/*
- * Unimplemented
- */
-// AfsSyscall
-// Alarm
-// ArchPrctl
-// Brk
-// Capget
-// Capset
-// ClockGetres
-// ClockNanosleep
-// ClockSettime
-// Clone
-// CreateModule
-// DeleteModule
-// EpollCtlOld
-// EpollPwait
-// EpollWaitOld
-// Execve
-// Fgetxattr
-// Flistxattr
-// Fork
-// Fremovexattr
-// Fsetxattr
-// Futex
-// GetKernelSyms
-// GetMempolicy
-// GetRobustList
-// GetThreadArea
-// Getitimer
-// Getpmsg
-// IoCancel
-// IoDestroy
-// IoGetevents
-// IoSetup
-// IoSubmit
-// IoprioGet
-// IoprioSet
-// KexecLoad
-// LookupDcookie
-// Mbind
-// MigratePages
-// Mincore
-// ModifyLdt
-// Mount
-// MovePages
-// MqGetsetattr
-// MqNotify
-// MqOpen
-// MqTimedreceive
-// MqTimedsend
-// MqUnlink
-// Mremap
-// Msgctl
-// Msgget
-// Msgrcv
-// Msgsnd
-// Newfstatat
-// Nfsservctl
-// Personality
-// Pselect6
-// Ptrace
-// Putpmsg
-// QueryModule
-// Quotactl
-// Readahead
-// Readv
-// RemapFilePages
-// RestartSyscall
-// RtSigaction
-// RtSigpending
-// RtSigprocmask
-// RtSigqueueinfo
-// RtSigreturn
-// RtSigsuspend
-// RtSigtimedwait
-// SchedGetPriorityMax
-// SchedGetPriorityMin
-// SchedGetaffinity
-// SchedGetparam
-// SchedGetscheduler
-// SchedRrGetInterval
-// SchedSetaffinity
-// SchedSetparam
-// SchedYield
-// Security
-// Semctl
-// Semget
-// Semop
-// Semtimedop
-// SetMempolicy
-// SetRobustList
-// SetThreadArea
-// SetTidAddress
-// Shmat
-// Shmctl
-// Shmdt
-// Shmget
-// Sigaltstack
-// Signalfd
-// Swapoff
-// Swapon
-// Sysfs
-// TimerCreate
-// TimerDelete
-// TimerGetoverrun
-// TimerGettime
-// TimerSettime
-// Timerfd
-// Tkill (obsolete)
-// Tuxcall
-// Umount2
-// Uselib
-// Utimensat
-// Vfork
-// Vhangup
-// Vserver
-// Waitid
-// _Sysctl
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