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// 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.
//go:build amd64 && linux
// +build amd64,linux
package unix
//sys EpollWait(epfd int, events []EpollEvent, msec int) (n int, err error)
//sys Fadvise(fd int, offset int64, length int64, advice int) (err error) = SYS_FADVISE64
//sys Fchown(fd int, uid int, gid int) (err error)
//sys Fstat(fd int, stat *Stat_t) (err error)
//sys Fstatat(dirfd int, path string, stat *Stat_t, flags int) (err error) = SYS_NEWFSTATAT
//sys Fstatfs(fd int, buf *Statfs_t) (err error)
//sys Ftruncate(fd int, length int64) (err error)
//sysnb Getegid() (egid int)
//sysnb Geteuid() (euid int)
//sysnb Getgid() (gid int)
//sysnb Getrlimit(resource int, rlim *Rlimit) (err error)
//sysnb Getuid() (uid int)
//sys Ioperm(from int, num int, on int) (err error)
//sys Iopl(level int) (err error)
//sys Lchown(path string, uid int, gid int) (err error)
//sys Listen(s int, n int) (err error)
func Lstat(path string, stat *Stat_t) (err error) {
return Fstatat(AT_FDCWD, path, stat, AT_SYMLINK_NOFOLLOW)
//sys MemfdSecret(flags int) (fd int, err error)
//sys Pause() (err error)
//sys pread(fd int, p []byte, offset int64) (n int, err error) = SYS_PREAD64
//sys pwrite(fd int, p []byte, offset int64) (n int, err error) = SYS_PWRITE64
//sys Renameat(olddirfd int, oldpath string, newdirfd int, newpath string) (err error)
//sys Seek(fd int, offset int64, whence int) (off int64, err error) = SYS_LSEEK
func Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (n int, err error) {
var ts *Timespec
if timeout != nil {
ts = &Timespec{Sec: timeout.Sec, Nsec: timeout.Usec * 1000}
return Pselect(nfd, r, w, e, ts, nil)
//sys sendfile(outfd int, infd int, offset *int64, count int) (written int, err error)
//sys setfsgid(gid int) (prev int, err error)
//sys setfsuid(uid int) (prev int, err error)
//sys Shutdown(fd int, how int) (err error)
//sys Splice(rfd int, roff *int64, wfd int, woff *int64, len int, flags int) (n int64, err error)
func Stat(path string, stat *Stat_t) (err error) {
// Use fstatat, because Android's seccomp policy blocks stat.
return Fstatat(AT_FDCWD, path, stat, 0)
//sys Statfs(path string, buf *Statfs_t) (err error)
//sys SyncFileRange(fd int, off int64, n int64, flags int) (err error)
//sys Truncate(path string, length int64) (err error)
//sys Ustat(dev int, ubuf *Ustat_t) (err error)
//sys accept4(s int, rsa *RawSockaddrAny, addrlen *_Socklen, flags int) (fd int, err error)
//sys bind(s int, addr unsafe.Pointer, addrlen _Socklen) (err error)
//sys connect(s int, addr unsafe.Pointer, addrlen _Socklen) (err error)
//sysnb getgroups(n int, list *_Gid_t) (nn int, err error)
//sysnb setgroups(n int, list *_Gid_t) (err error)
//sys getsockopt(s int, level int, name int, val unsafe.Pointer, vallen *_Socklen) (err error)
//sys setsockopt(s int, level int, name int, val unsafe.Pointer, vallen uintptr) (err error)
//sysnb socket(domain int, typ int, proto int) (fd int, err error)
//sysnb socketpair(domain int, typ int, proto int, fd *[2]int32) (err error)
//sysnb getpeername(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error)
//sysnb getsockname(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error)
//sys recvfrom(fd int, p []byte, flags int, from *RawSockaddrAny, fromlen *_Socklen) (n int, err error)
//sys sendto(s int, buf []byte, flags int, to unsafe.Pointer, addrlen _Socklen) (err error)
//sys recvmsg(s int, msg *Msghdr, flags int) (n int, err error)
//sys sendmsg(s int, msg *Msghdr, flags int) (n int, err error)
//sys mmap(addr uintptr, length uintptr, prot int, flags int, fd int, offset int64) (xaddr uintptr, err error)
//sys futimesat(dirfd int, path string, times *[2]Timeval) (err error)
func Gettimeofday(tv *Timeval) (err error) {
errno := gettimeofday(tv)
if errno != 0 {
return errno
return nil
func Time(t *Time_t) (tt Time_t, err error) {
var tv Timeval
errno := gettimeofday(&tv)
if errno != 0 {
return 0, errno
if t != nil {
*t = Time_t(tv.Sec)
return Time_t(tv.Sec), nil
//sys Utime(path string, buf *Utimbuf) (err error)
//sys utimes(path string, times *[2]Timeval) (err error)
func setTimespec(sec, nsec int64) Timespec {
return Timespec{Sec: sec, Nsec: nsec}
func setTimeval(sec, usec int64) Timeval {
return Timeval{Sec: sec, Usec: usec}
func (r *PtraceRegs) PC() uint64 { return r.Rip }
func (r *PtraceRegs) SetPC(pc uint64) { r.Rip = pc }
func (iov *Iovec) SetLen(length int) {
iov.Len = uint64(length)
func (msghdr *Msghdr) SetControllen(length int) {
msghdr.Controllen = uint64(length)
func (msghdr *Msghdr) SetIovlen(length int) {
msghdr.Iovlen = uint64(length)
func (cmsg *Cmsghdr) SetLen(length int) {
cmsg.Len = uint64(length)
func (rsa *RawSockaddrNFCLLCP) SetServiceNameLen(length int) {
rsa.Service_name_len = uint64(length)
//sys kexecFileLoad(kernelFd int, initrdFd int, cmdlineLen int, cmdline string, flags int) (err error)
func KexecFileLoad(kernelFd int, initrdFd int, cmdline string, flags int) error {
cmdlineLen := len(cmdline)
if cmdlineLen > 0 {
// Account for the additional NULL byte added by
// BytePtrFromString in kexecFileLoad. The kexec_file_load
// syscall expects a NULL-terminated string.
return kexecFileLoad(kernelFd, initrdFd, cmdlineLen, cmdline, flags)