// Copyright 2016 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. // +build s390x,linux package unix import ( "unsafe" ) //sys Dup2(oldfd int, newfd int) (err error) //sysnb EpollCreate(size int) (fd int, err error) //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) //sysnb InotifyInit() (fd int, err error) //sys Lchown(path string, uid int, gid int) (err error) //sys Lstat(path string, stat *Stat_t) (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 Seek(fd int, offset int64, whence int) (off int64, err error) = SYS_LSEEK //sys Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (n int, err error) //sys sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) //sys Setfsgid(gid int) (err error) //sys Setfsuid(uid int) (err error) //sysnb Setregid(rgid int, egid int) (err error) //sysnb Setresgid(rgid int, egid int, sgid int) (err error) //sysnb Setresuid(ruid int, euid int, suid int) (err error) //sysnb Setrlimit(resource int, rlim *Rlimit) (err error) //sysnb Setreuid(ruid int, euid int) (err error) //sys Splice(rfd int, roff *int64, wfd int, woff *int64, len int, flags int) (n int64, err error) //sys Stat(path string, stat *Stat_t) (err error) //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) //sysnb getgroups(n int, list *_Gid_t) (nn int, err error) //sysnb setgroups(n int, list *_Gid_t) (err error) //sys futimesat(dirfd int, path string, times *[2]Timeval) (err error) //sysnb Gettimeofday(tv *Timeval) (err error) func Time(t *Time_t) (tt Time_t, err error) { var tv Timeval err = Gettimeofday(&tv) if err != nil { return 0, err } 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} } //sysnb pipe2(p *[2]_C_int, flags int) (err error) func Pipe(p []int) (err error) { if len(p) != 2 { return EINVAL } var pp [2]_C_int err = pipe2(&pp, 0) // pipe2 is the same as pipe when flags are set to 0. p[0] = int(pp[0]) p[1] = int(pp[1]) return } func Pipe2(p []int, flags int) (err error) { if len(p) != 2 { return EINVAL } var pp [2]_C_int err = pipe2(&pp, flags) p[0] = int(pp[0]) p[1] = int(pp[1]) return } func Ioperm(from int, num int, on int) (err error) { return ENOSYS } func Iopl(level int) (err error) { return ENOSYS } func (r *PtraceRegs) PC() uint64 { return r.Psw.Addr } func (r *PtraceRegs) SetPC(pc uint64) { r.Psw.Addr = pc } func (iov *Iovec) SetLen(length int) { iov.Len = uint64(length) } func (msghdr *Msghdr) SetControllen(length int) { msghdr.Controllen = uint64(length) } func (cmsg *Cmsghdr) SetLen(length int) { cmsg.Len = uint64(length) } // Linux on s390x uses the old mmap interface, which requires arguments to be passed in a struct. // mmap2 also requires arguments to be passed in a struct; it is currently not exposed in . func mmap(addr uintptr, length uintptr, prot int, flags int, fd int, offset int64) (xaddr uintptr, err error) { mmap_args := [6]uintptr{addr, length, uintptr(prot), uintptr(flags), uintptr(fd), uintptr(offset)} r0, _, e1 := Syscall(SYS_MMAP, uintptr(unsafe.Pointer(&mmap_args[0])), 0, 0) xaddr = uintptr(r0) if e1 != 0 { err = errnoErr(e1) } return } // On s390x Linux, all the socket calls go through an extra indirection. // The arguments to the underlying system call (SYS_SOCKETCALL) are the // number below and a pointer to an array of uintptr. const ( // see linux/net.h netSocket = 1 netBind = 2 netConnect = 3 netListen = 4 netAccept = 5 netGetSockName = 6 netGetPeerName = 7 netSocketPair = 8 netSend = 9 netRecv = 10 netSendTo = 11 netRecvFrom = 12 netShutdown = 13 netSetSockOpt = 14 netGetSockOpt = 15 netSendMsg = 16 netRecvMsg = 17 netAccept4 = 18 netRecvMMsg = 19 netSendMMsg = 20 ) func accept(s int, rsa *RawSockaddrAny, addrlen *_Socklen) (int, error) { args := [3]uintptr{uintptr(s), uintptr(unsafe.Pointer(rsa)), uintptr(unsafe.Pointer(addrlen))} fd, _, err := Syscall(SYS_SOCKETCALL, netAccept, uintptr(unsafe.Pointer(&args)), 0) if err != 0 { return 0, err } return int(fd), nil } func accept4(s int, rsa *RawSockaddrAny, addrlen *_Socklen, flags int) (int, error) { args := [4]uintptr{uintptr(s), uintptr(unsafe.Pointer(rsa)), uintptr(unsafe.Pointer(addrlen)), uintptr(flags)} fd, _, err := Syscall(SYS_SOCKETCALL, netAccept4, uintptr(unsafe.Pointer(&args)), 0) if err != 0 { return 0, err } return int(fd), nil } func getsockname(s int, rsa *RawSockaddrAny, addrlen *_Socklen) error { args := [3]uintptr{uintptr(s), uintptr(unsafe.Pointer(rsa)), uintptr(unsafe.Pointer(addrlen))} _, _, err := RawSyscall(SYS_SOCKETCALL, netGetSockName, uintptr(unsafe.Pointer(&args)), 0) if err != 0 { return err } return nil } func getpeername(s int, rsa *RawSockaddrAny, addrlen *_Socklen) error { args := [3]uintptr{uintptr(s), uintptr(unsafe.Pointer(rsa)), uintptr(unsafe.Pointer(addrlen))} _, _, err := RawSyscall(SYS_SOCKETCALL, netGetPeerName, uintptr(unsafe.Pointer(&args)), 0) if err != 0 { return err } return nil } func socketpair(domain int, typ int, flags int, fd *[2]int32) error { args := [4]uintptr{uintptr(domain), uintptr(typ), uintptr(flags), uintptr(unsafe.Pointer(fd))} _, _, err := RawSyscall(SYS_SOCKETCALL, netSocketPair, uintptr(unsafe.Pointer(&args)), 0) if err != 0 { return err } return nil } func bind(s int, addr unsafe.Pointer, addrlen _Socklen) error { args := [3]uintptr{uintptr(s), uintptr(addr), uintptr(addrlen)} _, _, err := Syscall(SYS_SOCKETCALL, netBind, uintptr(unsafe.Pointer(&args)), 0) if err != 0 { return err } return nil } func connect(s int, addr unsafe.Pointer, addrlen _Socklen) error { args := [3]uintptr{uintptr(s), uintptr(addr), uintptr(addrlen)} _, _, err := Syscall(SYS_SOCKETCALL, netConnect, uintptr(unsafe.Pointer(&args)), 0) if err != 0 { return err } return nil } func socket(domain int, typ int, proto int) (int, error) { args := [3]uintptr{uintptr(domain), uintptr(typ), uintptr(proto)} fd, _, err := RawSyscall(SYS_SOCKETCALL, netSocket, uintptr(unsafe.Pointer(&args)), 0) if err != 0 { return 0, err } return int(fd), nil } func getsockopt(s int, level int, name int, val unsafe.Pointer, vallen *_Socklen) error { args := [5]uintptr{uintptr(s), uintptr(level), uintptr(name), uintptr(val), uintptr(unsafe.Pointer(vallen))} _, _, err := Syscall(SYS_SOCKETCALL, netGetSockOpt, uintptr(unsafe.Pointer(&args)), 0) if err != 0 { return err } return nil } func setsockopt(s int, level int, name int, val unsafe.Pointer, vallen uintptr) error { args := [4]uintptr{uintptr(s), uintptr(level), uintptr(name), uintptr(val)} _, _, err := Syscall(SYS_SOCKETCALL, netSetSockOpt, uintptr(unsafe.Pointer(&args)), 0) if err != 0 { return err } return nil } func recvfrom(s int, p []byte, flags int, from *RawSockaddrAny, fromlen *_Socklen) (int, error) { var base uintptr if len(p) > 0 { base = uintptr(unsafe.Pointer(&p[0])) } args := [6]uintptr{uintptr(s), base, uintptr(len(p)), uintptr(flags), uintptr(unsafe.Pointer(from)), uintptr(unsafe.Pointer(fromlen))} n, _, err := Syscall(SYS_SOCKETCALL, netRecvFrom, uintptr(unsafe.Pointer(&args)), 0) if err != 0 { return 0, err } return int(n), nil } func sendto(s int, p []byte, flags int, to unsafe.Pointer, addrlen _Socklen) error { var base uintptr if len(p) > 0 { base = uintptr(unsafe.Pointer(&p[0])) } args := [6]uintptr{uintptr(s), base, uintptr(len(p)), uintptr(flags), uintptr(to), uintptr(addrlen)} _, _, err := Syscall(SYS_SOCKETCALL, netSendTo, uintptr(unsafe.Pointer(&args)), 0) if err != 0 { return err } return nil } func recvmsg(s int, msg *Msghdr, flags int) (int, error) { args := [3]uintptr{uintptr(s), uintptr(unsafe.Pointer(msg)), uintptr(flags)} n, _, err := Syscall(SYS_SOCKETCALL, netRecvMsg, uintptr(unsafe.Pointer(&args)), 0) if err != 0 { return 0, err } return int(n), nil } func sendmsg(s int, msg *Msghdr, flags int) (int, error) { args := [3]uintptr{uintptr(s), uintptr(unsafe.Pointer(msg)), uintptr(flags)} n, _, err := Syscall(SYS_SOCKETCALL, netSendMsg, uintptr(unsafe.Pointer(&args)), 0) if err != 0 { return 0, err } return int(n), nil } func Listen(s int, n int) error { args := [2]uintptr{uintptr(s), uintptr(n)} _, _, err := Syscall(SYS_SOCKETCALL, netListen, uintptr(unsafe.Pointer(&args)), 0) if err != 0 { return err } return nil } func Shutdown(s, how int) error { args := [2]uintptr{uintptr(s), uintptr(how)} _, _, err := Syscall(SYS_SOCKETCALL, netShutdown, uintptr(unsafe.Pointer(&args)), 0) if err != 0 { return err } return nil } //sys poll(fds *PollFd, nfds int, timeout int) (n int, err error) func Poll(fds []PollFd, timeout int) (n int, err error) { if len(fds) == 0 { return poll(nil, 0, timeout) } return poll(&fds[0], len(fds), timeout) }