289b30715d
This commit converts the dependency management from Godeps to the vendor folder, also switching the tool from godep to trash. Since the upstream tool lacks a few features proposed via a few PRs, until those PRs are merged in (if), use github.com/karalabe/trash. You can update dependencies via trash --update. All dependencies have been updated to their latest version. Parts of the build system are reworked to drop old notions of Godeps and invocation of the go vet command so that it doesn't run against the vendor folder, as that will just blow up during vetting. The conversion drops OpenCL (and hence GPU mining support) from ethash and our codebase. The short reasoning is that there's noone to maintain and having opencl libs in our deps messes up builds as go install ./... tries to build them, failing with unsatisfied link errors for the C OpenCL deps. golang.org/x/net/context is not vendored in. We expect it to be fetched by the user (i.e. using go get). To keep ci.go builds reproducible the package is "vendored" in build/_vendor.
1111 lines
28 KiB
Go
1111 lines
28 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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// Linux 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
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// wrap it in our own nicer implementation.
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package unix
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import (
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"syscall"
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"unsafe"
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)
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/*
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* Wrapped
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*/
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func Access(path string, mode uint32) (err error) {
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return Faccessat(AT_FDCWD, path, mode, 0)
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}
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func Chmod(path string, mode uint32) (err error) {
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return Fchmodat(AT_FDCWD, path, mode, 0)
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}
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func Chown(path string, uid int, gid int) (err error) {
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return Fchownat(AT_FDCWD, path, uid, gid, 0)
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}
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func Creat(path string, mode uint32) (fd int, err error) {
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return Open(path, O_CREAT|O_WRONLY|O_TRUNC, mode)
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}
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//sys Linkat(olddirfd int, oldpath string, newdirfd int, newpath string, flags int) (err error)
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func Link(oldpath string, newpath string) (err error) {
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return Linkat(AT_FDCWD, oldpath, AT_FDCWD, newpath, 0)
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}
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func Mkdir(path string, mode uint32) (err error) {
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return Mkdirat(AT_FDCWD, path, mode)
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}
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func Mknod(path string, mode uint32, dev int) (err error) {
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return Mknodat(AT_FDCWD, path, mode, dev)
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}
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func Open(path string, mode int, perm uint32) (fd int, err error) {
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return openat(AT_FDCWD, path, mode|O_LARGEFILE, perm)
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}
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//sys openat(dirfd int, path string, flags int, mode uint32) (fd int, err error)
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func Openat(dirfd int, path string, flags int, mode uint32) (fd int, err error) {
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return openat(dirfd, path, flags|O_LARGEFILE, mode)
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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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//sys Readlinkat(dirfd int, path string, buf []byte) (n int, err error)
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func Readlink(path string, buf []byte) (n int, err error) {
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return Readlinkat(AT_FDCWD, path, buf)
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}
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func Rename(oldpath string, newpath string) (err error) {
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return Renameat(AT_FDCWD, oldpath, AT_FDCWD, newpath)
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}
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func Rmdir(path string) error {
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return Unlinkat(AT_FDCWD, path, AT_REMOVEDIR)
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}
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//sys Symlinkat(oldpath string, newdirfd int, newpath string) (err error)
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func Symlink(oldpath string, newpath string) (err error) {
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return Symlinkat(oldpath, AT_FDCWD, newpath)
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}
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func Unlink(path string) error {
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return Unlinkat(AT_FDCWD, path, 0)
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}
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//sys Unlinkat(dirfd int, path string, flags int) (err error)
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//sys utimes(path string, times *[2]Timeval) (err error)
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func Utimes(path string, tv []Timeval) error {
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if tv == nil {
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err := utimensat(AT_FDCWD, path, nil, 0)
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if err != ENOSYS {
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return err
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}
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return utimes(path, nil)
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}
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if len(tv) != 2 {
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return EINVAL
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}
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var ts [2]Timespec
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ts[0] = NsecToTimespec(TimevalToNsec(tv[0]))
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ts[1] = NsecToTimespec(TimevalToNsec(tv[1]))
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err := utimensat(AT_FDCWD, path, (*[2]Timespec)(unsafe.Pointer(&ts[0])), 0)
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if err != ENOSYS {
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return err
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}
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return utimes(path, (*[2]Timeval)(unsafe.Pointer(&tv[0])))
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}
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//sys utimensat(dirfd int, path string, times *[2]Timespec, flags int) (err error)
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func UtimesNano(path string, ts []Timespec) error {
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if ts == nil {
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err := utimensat(AT_FDCWD, path, nil, 0)
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if err != ENOSYS {
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return err
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}
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return utimes(path, nil)
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}
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if len(ts) != 2 {
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return EINVAL
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}
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err := utimensat(AT_FDCWD, path, (*[2]Timespec)(unsafe.Pointer(&ts[0])), 0)
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if err != ENOSYS {
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return err
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}
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// If the utimensat syscall isn't available (utimensat was added to Linux
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// in 2.6.22, Released, 8 July 2007) then fall back to utimes
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var tv [2]Timeval
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for i := 0; i < 2; i++ {
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tv[i] = NsecToTimeval(TimespecToNsec(ts[i]))
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}
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return utimes(path, (*[2]Timeval)(unsafe.Pointer(&tv[0])))
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}
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func UtimesNanoAt(dirfd int, path string, ts []Timespec, flags int) error {
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if ts == nil {
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return utimensat(dirfd, path, nil, flags)
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}
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if len(ts) != 2 {
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return EINVAL
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}
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return utimensat(dirfd, path, (*[2]Timespec)(unsafe.Pointer(&ts[0])), flags)
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}
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//sys futimesat(dirfd int, path *byte, times *[2]Timeval) (err error)
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func Futimesat(dirfd int, path string, tv []Timeval) error {
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pathp, err := BytePtrFromString(path)
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if err != nil {
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return err
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}
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if tv == nil {
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return futimesat(dirfd, pathp, nil)
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}
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if len(tv) != 2 {
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return EINVAL
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}
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return futimesat(dirfd, pathp, (*[2]Timeval)(unsafe.Pointer(&tv[0])))
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}
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func Futimes(fd int, tv []Timeval) (err error) {
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// Believe it or not, this is the best we can do on Linux
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// (and is what glibc does).
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return Utimes("/proc/self/fd/"+itoa(fd), tv)
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}
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const ImplementsGetwd = true
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//sys Getcwd(buf []byte) (n int, err error)
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func Getwd() (wd string, err error) {
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var buf [PathMax]byte
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n, 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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// Getcwd returns the number of bytes written to buf, including the NUL.
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if n < 1 || n > len(buf) || buf[n-1] != 0 {
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return "", EINVAL
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}
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return string(buf[0 : n-1]), nil
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}
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func Getgroups() (gids []int, err error) {
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n, err := getgroups(0, nil)
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if err != nil {
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return nil, err
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}
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if n == 0 {
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return nil, nil
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}
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// Sanity check group count. Max is 1<<16 on Linux.
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if n < 0 || n > 1<<20 {
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return nil, EINVAL
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}
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a := make([]_Gid_t, n)
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n, err = getgroups(n, &a[0])
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if err != nil {
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return nil, err
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}
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gids = make([]int, n)
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for i, v := range a[0:n] {
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gids[i] = int(v)
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}
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return
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}
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func Setgroups(gids []int) (err error) {
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if len(gids) == 0 {
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return setgroups(0, nil)
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}
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a := make([]_Gid_t, len(gids))
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for i, v := range gids {
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a[i] = _Gid_t(v)
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}
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return setgroups(len(a), &a[0])
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}
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type WaitStatus uint32
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// Wait status is 7 bits at bottom, either 0 (exited),
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// 0x7F (stopped), or a signal number that caused an exit.
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// The 0x80 bit is whether there was a core dump.
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// An extra number (exit code, signal causing a stop)
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// is in the high bits. At least that's the idea.
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// There are various irregularities. For example, the
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// "continued" status is 0xFFFF, distinguishing itself
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// from stopped via the core dump bit.
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const (
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mask = 0x7F
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core = 0x80
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exited = 0x00
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stopped = 0x7F
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shift = 8
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)
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func (w WaitStatus) Exited() bool { return w&mask == exited }
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func (w WaitStatus) Signaled() bool { return w&mask != stopped && w&mask != exited }
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func (w WaitStatus) Stopped() bool { return w&0xFF == stopped }
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func (w WaitStatus) Continued() bool { return w == 0xFFFF }
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func (w WaitStatus) CoreDump() bool { return w.Signaled() && w&core != 0 }
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func (w WaitStatus) ExitStatus() int {
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if !w.Exited() {
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return -1
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}
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return int(w>>shift) & 0xFF
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}
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func (w WaitStatus) Signal() syscall.Signal {
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if !w.Signaled() {
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return -1
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}
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return syscall.Signal(w & mask)
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}
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func (w WaitStatus) StopSignal() syscall.Signal {
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if !w.Stopped() {
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return -1
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}
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return syscall.Signal(w>>shift) & 0xFF
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}
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func (w WaitStatus) TrapCause() int {
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if w.StopSignal() != SIGTRAP {
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return -1
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}
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return int(w>>shift) >> 8
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}
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//sys wait4(pid int, wstatus *_C_int, options int, rusage *Rusage) (wpid int, err error)
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func Wait4(pid int, wstatus *WaitStatus, options int, rusage *Rusage) (wpid int, err error) {
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var status _C_int
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wpid, err = wait4(pid, &status, options, rusage)
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if wstatus != nil {
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*wstatus = WaitStatus(status)
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}
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return
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}
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func Mkfifo(path string, mode uint32) (err error) {
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return Mknod(path, mode|S_IFIFO, 0)
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}
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func (sa *SockaddrInet4) sockaddr() (unsafe.Pointer, _Socklen, error) {
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if sa.Port < 0 || sa.Port > 0xFFFF {
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return nil, 0, EINVAL
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}
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sa.raw.Family = AF_INET
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p := (*[2]byte)(unsafe.Pointer(&sa.raw.Port))
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p[0] = byte(sa.Port >> 8)
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p[1] = byte(sa.Port)
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for i := 0; i < len(sa.Addr); i++ {
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sa.raw.Addr[i] = sa.Addr[i]
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}
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return unsafe.Pointer(&sa.raw), SizeofSockaddrInet4, nil
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}
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func (sa *SockaddrInet6) sockaddr() (unsafe.Pointer, _Socklen, error) {
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if sa.Port < 0 || sa.Port > 0xFFFF {
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return nil, 0, EINVAL
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}
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sa.raw.Family = AF_INET6
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p := (*[2]byte)(unsafe.Pointer(&sa.raw.Port))
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p[0] = byte(sa.Port >> 8)
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p[1] = byte(sa.Port)
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sa.raw.Scope_id = sa.ZoneId
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for i := 0; i < len(sa.Addr); i++ {
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sa.raw.Addr[i] = sa.Addr[i]
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}
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return unsafe.Pointer(&sa.raw), SizeofSockaddrInet6, nil
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}
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func (sa *SockaddrUnix) sockaddr() (unsafe.Pointer, _Socklen, error) {
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name := sa.Name
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n := len(name)
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if n >= len(sa.raw.Path) {
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return nil, 0, EINVAL
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}
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sa.raw.Family = AF_UNIX
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for i := 0; i < n; i++ {
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sa.raw.Path[i] = int8(name[i])
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}
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// length is family (uint16), name, NUL.
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sl := _Socklen(2)
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if n > 0 {
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sl += _Socklen(n) + 1
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}
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if sa.raw.Path[0] == '@' {
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sa.raw.Path[0] = 0
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// Don't count trailing NUL for abstract address.
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sl--
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}
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return unsafe.Pointer(&sa.raw), sl, nil
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}
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type SockaddrLinklayer struct {
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Protocol uint16
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Ifindex int
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Hatype uint16
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Pkttype uint8
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Halen uint8
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Addr [8]byte
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raw RawSockaddrLinklayer
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}
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func (sa *SockaddrLinklayer) sockaddr() (unsafe.Pointer, _Socklen, error) {
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if sa.Ifindex < 0 || sa.Ifindex > 0x7fffffff {
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return nil, 0, EINVAL
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}
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sa.raw.Family = AF_PACKET
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sa.raw.Protocol = sa.Protocol
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sa.raw.Ifindex = int32(sa.Ifindex)
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sa.raw.Hatype = sa.Hatype
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sa.raw.Pkttype = sa.Pkttype
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sa.raw.Halen = sa.Halen
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for i := 0; i < len(sa.Addr); i++ {
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sa.raw.Addr[i] = sa.Addr[i]
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}
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return unsafe.Pointer(&sa.raw), SizeofSockaddrLinklayer, nil
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}
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type SockaddrNetlink struct {
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Family uint16
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Pad uint16
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Pid uint32
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Groups uint32
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raw RawSockaddrNetlink
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}
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func (sa *SockaddrNetlink) sockaddr() (unsafe.Pointer, _Socklen, error) {
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sa.raw.Family = AF_NETLINK
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sa.raw.Pad = sa.Pad
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sa.raw.Pid = sa.Pid
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sa.raw.Groups = sa.Groups
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return unsafe.Pointer(&sa.raw), SizeofSockaddrNetlink, nil
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}
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type SockaddrHCI struct {
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Dev uint16
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Channel uint16
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raw RawSockaddrHCI
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}
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func (sa *SockaddrHCI) sockaddr() (unsafe.Pointer, _Socklen, error) {
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sa.raw.Family = AF_BLUETOOTH
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sa.raw.Dev = sa.Dev
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sa.raw.Channel = sa.Channel
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return unsafe.Pointer(&sa.raw), SizeofSockaddrHCI, nil
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}
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func anyToSockaddr(rsa *RawSockaddrAny) (Sockaddr, error) {
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switch rsa.Addr.Family {
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case AF_NETLINK:
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pp := (*RawSockaddrNetlink)(unsafe.Pointer(rsa))
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sa := new(SockaddrNetlink)
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sa.Family = pp.Family
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sa.Pad = pp.Pad
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sa.Pid = pp.Pid
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sa.Groups = pp.Groups
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return sa, nil
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case AF_PACKET:
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pp := (*RawSockaddrLinklayer)(unsafe.Pointer(rsa))
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sa := new(SockaddrLinklayer)
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sa.Protocol = pp.Protocol
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sa.Ifindex = int(pp.Ifindex)
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sa.Hatype = pp.Hatype
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sa.Pkttype = pp.Pkttype
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sa.Halen = pp.Halen
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for i := 0; i < len(sa.Addr); i++ {
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sa.Addr[i] = pp.Addr[i]
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}
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return sa, nil
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case AF_UNIX:
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pp := (*RawSockaddrUnix)(unsafe.Pointer(rsa))
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sa := new(SockaddrUnix)
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if pp.Path[0] == 0 {
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// "Abstract" Unix domain socket.
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// Rewrite leading NUL as @ for textual display.
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// (This is the standard convention.)
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// Not friendly to overwrite in place,
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// but the callers below don't care.
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pp.Path[0] = '@'
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}
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// Assume path ends at NUL.
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// This is not technically the Linux semantics for
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// abstract Unix domain sockets--they are supposed
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// to be uninterpreted fixed-size binary blobs--but
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// everyone uses this convention.
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n := 0
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for n < len(pp.Path) && pp.Path[n] != 0 {
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n++
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}
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bytes := (*[10000]byte)(unsafe.Pointer(&pp.Path[0]))[0:n]
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sa.Name = string(bytes)
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return sa, nil
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case AF_INET:
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pp := (*RawSockaddrInet4)(unsafe.Pointer(rsa))
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sa := new(SockaddrInet4)
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p := (*[2]byte)(unsafe.Pointer(&pp.Port))
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sa.Port = int(p[0])<<8 + int(p[1])
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for i := 0; i < len(sa.Addr); i++ {
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sa.Addr[i] = pp.Addr[i]
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}
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return sa, nil
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case AF_INET6:
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pp := (*RawSockaddrInet6)(unsafe.Pointer(rsa))
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sa := new(SockaddrInet6)
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p := (*[2]byte)(unsafe.Pointer(&pp.Port))
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sa.Port = int(p[0])<<8 + int(p[1])
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sa.ZoneId = pp.Scope_id
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for i := 0; i < len(sa.Addr); i++ {
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sa.Addr[i] = pp.Addr[i]
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}
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return sa, nil
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}
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return nil, EAFNOSUPPORT
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}
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func Accept(fd int) (nfd int, sa Sockaddr, err error) {
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var rsa RawSockaddrAny
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var len _Socklen = SizeofSockaddrAny
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nfd, err = accept(fd, &rsa, &len)
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if err != nil {
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return
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}
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sa, err = anyToSockaddr(&rsa)
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if err != nil {
|
|
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 SetsockoptIPMreqn(fd, level, opt int, mreq *IPMreqn) (err error) {
|
|
return setsockopt(fd, level, opt, unsafe.Pointer(mreq), unsafe.Sizeof(*mreq))
|
|
}
|
|
|
|
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 {
|
|
// receive at least one normal byte
|
|
if 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 {
|
|
// send at least one normal byte
|
|
if 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 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 clen(n []byte) int {
|
|
for i := 0; i < len(n); i++ {
|
|
if n[i] == 0 {
|
|
return i
|
|
}
|
|
}
|
|
return len(n)
|
|
}
|
|
|
|
func ReadDirent(fd int, buf []byte) (n int, err error) {
|
|
return Getdents(fd, buf)
|
|
}
|
|
|
|
func ParseDirent(buf []byte, max int, names []string) (consumed int, count int, newnames []string) {
|
|
origlen := len(buf)
|
|
count = 0
|
|
for max != 0 && len(buf) > 0 {
|
|
dirent := (*Dirent)(unsafe.Pointer(&buf[0]))
|
|
buf = buf[dirent.Reclen:]
|
|
if dirent.Ino == 0 { // File absent in directory.
|
|
continue
|
|
}
|
|
bytes := (*[10000]byte)(unsafe.Pointer(&dirent.Name[0]))
|
|
var name = string(bytes[0:clen(bytes[:])])
|
|
if name == "." || name == ".." { // Useless names
|
|
continue
|
|
}
|
|
max--
|
|
count++
|
|
names = append(names, name)
|
|
}
|
|
return origlen - len(buf), count, names
|
|
}
|
|
|
|
//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 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 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 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 Fchmodat(dirfd int, path string, mode uint32, flags int) (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)
|
|
//sysnb Getrusage(who int, rusage *Rusage) (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 Listxattr(path string, dest []byte) (sz 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, old *Rlimit, newlimit *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 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()
|
|
//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 Munlock(b []byte) (err error)
|
|
//sys Mlockall(flags int) (err error)
|
|
//sys Munlockall() (err error)
|
|
|
|
/*
|
|
* Unimplemented
|
|
*/
|
|
// AddKey
|
|
// AfsSyscall
|
|
// Alarm
|
|
// ArchPrctl
|
|
// Brk
|
|
// Capget
|
|
// Capset
|
|
// ClockGetres
|
|
// ClockNanosleep
|
|
// ClockSettime
|
|
// Clone
|
|
// CreateModule
|
|
// DeleteModule
|
|
// EpollCtlOld
|
|
// EpollPwait
|
|
// EpollWaitOld
|
|
// Eventfd
|
|
// Execve
|
|
// Fgetxattr
|
|
// Flistxattr
|
|
// Fork
|
|
// Fremovexattr
|
|
// Fsetxattr
|
|
// Futex
|
|
// GetKernelSyms
|
|
// GetMempolicy
|
|
// GetRobustList
|
|
// GetThreadArea
|
|
// Getitimer
|
|
// Getpmsg
|
|
// IoCancel
|
|
// IoDestroy
|
|
// IoGetevents
|
|
// IoSetup
|
|
// IoSubmit
|
|
// Ioctl
|
|
// IoprioGet
|
|
// IoprioSet
|
|
// KexecLoad
|
|
// Keyctl
|
|
// Lgetxattr
|
|
// Llistxattr
|
|
// LookupDcookie
|
|
// Lremovexattr
|
|
// Lsetxattr
|
|
// Mbind
|
|
// MigratePages
|
|
// Mincore
|
|
// ModifyLdt
|
|
// Mount
|
|
// MovePages
|
|
// Mprotect
|
|
// MqGetsetattr
|
|
// MqNotify
|
|
// MqOpen
|
|
// MqTimedreceive
|
|
// MqTimedsend
|
|
// MqUnlink
|
|
// Mremap
|
|
// Msgctl
|
|
// Msgget
|
|
// Msgrcv
|
|
// Msgsnd
|
|
// Msync
|
|
// Newfstatat
|
|
// Nfsservctl
|
|
// Personality
|
|
// Pselect6
|
|
// Ptrace
|
|
// Putpmsg
|
|
// QueryModule
|
|
// Quotactl
|
|
// Readahead
|
|
// Readv
|
|
// RemapFilePages
|
|
// RequestKey
|
|
// 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
|
|
// Vmsplice
|
|
// Vserver
|
|
// Waitid
|
|
// _Sysctl
|