// Copyright 2016 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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package syscall
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import "unsafe"
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const (
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_SYS_dup = SYS_DUP2
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_SYS_setgroups = SYS_SETGROUPS
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)
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//sys Dup2(oldfd int, newfd int) (err error)
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//sys Fchown(fd int, uid int, gid int) (err error)
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//sys Fstat(fd int, stat *Stat_t) (err error)
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//sys fstatat(dirfd int, path string, stat *Stat_t, flags int) (err error) = SYS_NEWFSTATAT
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//sys Fstatfs(fd int, buf *Statfs_t) (err error)
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//sys Ftruncate(fd int, length int64) (err error)
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//sysnb Getegid() (egid int)
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//sysnb Geteuid() (euid int)
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//sysnb Getgid() (gid int)
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//sysnb Getrlimit(resource int, rlim *Rlimit) (err error) = SYS_GETRLIMIT
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//sysnb Getuid() (uid int)
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//sysnb InotifyInit() (fd int, err error)
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//sys Lchown(path string, uid int, gid int) (err error)
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//sys Lstat(path string, stat *Stat_t) (err error)
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//sys Pread(fd int, p []byte, offset int64) (n int, err error) = SYS_PREAD64
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//sys Pwrite(fd int, p []byte, offset int64) (n int, err error) = SYS_PWRITE64
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//sys Seek(fd int, offset int64, whence int) (off int64, err error) = SYS_LSEEK
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//sys Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (n int, err error)
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//sys sendfile(outfd int, infd int, offset *int64, count int) (written int, err error)
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//sys Setfsgid(gid int) (err error)
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//sys Setfsuid(uid int) (err error)
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//sysnb Setregid(rgid int, egid int) (err error)
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//sysnb Setresgid(rgid int, egid int, sgid int) (err error)
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//sysnb Setresuid(ruid int, euid int, suid int) (err error)
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//sysnb Setrlimit(resource int, rlim *Rlimit) (err error)
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//sysnb Setreuid(ruid int, euid int) (err error)
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//sys Splice(rfd int, roff *int64, wfd int, woff *int64, len int, flags int) (n int64, err error)
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//sys Stat(path string, stat *Stat_t) (err error)
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//sys Statfs(path string, buf *Statfs_t) (err error)
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//sys SyncFileRange(fd int, off int64, n int64, flags int) (err error) = SYS_SYNC_FILE_RANGE
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//sys Truncate(path string, length int64) (err error)
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//sysnb getgroups(n int, list *_Gid_t) (nn int, err error)
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//sysnb setgroups(n int, list *_Gid_t) (err error)
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//sysnb Gettimeofday(tv *Timeval) (err error)
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//sys EpollWait(epfd int, events []EpollEvent, msec int) (n int, err error)
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func Time(t *Time_t) (tt Time_t, err error) {
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var tv Timeval
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err = Gettimeofday(&tv)
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if err != nil {
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return 0, err
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}
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if t != nil {
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*t = Time_t(tv.Sec)
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}
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return Time_t(tv.Sec), nil
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}
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func setTimespec(sec, nsec int64) Timespec {
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return Timespec{Sec: sec, Nsec: nsec}
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}
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func setTimeval(sec, usec int64) Timeval {
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return Timeval{Sec: sec, Usec: usec}
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}
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func Pipe(p []int) (err error) {
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if len(p) != 2 {
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return EINVAL
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}
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var pp [2]_C_int
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err = pipe2(&pp, 0)
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p[0] = int(pp[0])
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p[1] = int(pp[1])
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return
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}
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//sysnb pipe2(p *[2]_C_int, flags int) (err error)
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func Pipe2(p []int, flags int) (err error) {
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if len(p) != 2 {
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return EINVAL
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}
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var pp [2]_C_int
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err = pipe2(&pp, flags)
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p[0] = int(pp[0])
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p[1] = int(pp[1])
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return
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}
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// Linux on s390x uses the old mmap interface, which requires arguments to be passed in a struct.
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// mmap2 also requires arguments to be passed in a struct; it is currently not exposed in <asm/unistd.h>.
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func mmap(addr uintptr, length uintptr, prot int, flags int, fd int, offset int64) (xaddr uintptr, err error) {
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mmap_args := [6]uintptr{addr, length, uintptr(prot), uintptr(flags), uintptr(fd), uintptr(offset)}
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r0, _, e1 := Syscall(SYS_MMAP, uintptr(unsafe.Pointer(&mmap_args[0])), 0, 0)
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xaddr = uintptr(r0)
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if e1 != 0 {
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err = errnoErr(e1)
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}
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return
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}
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// On s390x Linux, all the socket calls go through an extra indirection.
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// The arguments to the underlying system call are the number below
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// and a pointer to an array of uintptr. We hide the pointer in the
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// socketcall assembly to avoid allocation on every system call.
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const (
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// see linux/net.h
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_SOCKET = 1
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_BIND = 2
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_CONNECT = 3
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_LISTEN = 4
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_ACCEPT = 5
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_GETSOCKNAME = 6
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_GETPEERNAME = 7
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_SOCKETPAIR = 8
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_SEND = 9
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_RECV = 10
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_SENDTO = 11
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_RECVFROM = 12
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_SHUTDOWN = 13
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_SETSOCKOPT = 14
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_GETSOCKOPT = 15
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_SENDMSG = 16
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_RECVMSG = 17
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_ACCEPT4 = 18
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_RECVMMSG = 19
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_SENDMMSG = 20
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)
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func socketcall(call int, a0, a1, a2, a3, a4, a5 uintptr) (n int, err Errno)
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func rawsocketcall(call int, a0, a1, a2, a3, a4, a5 uintptr) (n int, err Errno)
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func accept(s int, rsa *RawSockaddrAny, addrlen *_Socklen) (fd int, err error) {
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fd, e := socketcall(_ACCEPT, uintptr(s), uintptr(unsafe.Pointer(rsa)), uintptr(unsafe.Pointer(addrlen)), 0, 0, 0)
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if e != 0 {
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err = e
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}
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return
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}
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func accept4(s int, rsa *RawSockaddrAny, addrlen *_Socklen, flags int) (fd int, err error) {
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fd, e := socketcall(_ACCEPT4, uintptr(s), uintptr(unsafe.Pointer(rsa)), uintptr(unsafe.Pointer(addrlen)), uintptr(flags), 0, 0)
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if e != 0 {
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err = e
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}
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return
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}
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func getsockname(s int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error) {
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_, e := rawsocketcall(_GETSOCKNAME, uintptr(s), uintptr(unsafe.Pointer(rsa)), uintptr(unsafe.Pointer(addrlen)), 0, 0, 0)
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if e != 0 {
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err = e
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}
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return
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}
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func getpeername(s int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error) {
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_, e := rawsocketcall(_GETPEERNAME, uintptr(s), uintptr(unsafe.Pointer(rsa)), uintptr(unsafe.Pointer(addrlen)), 0, 0, 0)
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if e != 0 {
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err = e
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}
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return
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}
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func socketpair(domain int, typ int, flags int, fd *[2]int32) (err error) {
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_, e := rawsocketcall(_SOCKETPAIR, uintptr(domain), uintptr(typ), uintptr(flags), uintptr(unsafe.Pointer(fd)), 0, 0)
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if e != 0 {
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err = e
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}
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return
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}
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func bind(s int, addr unsafe.Pointer, addrlen _Socklen) (err error) {
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_, e := socketcall(_BIND, uintptr(s), uintptr(addr), uintptr(addrlen), 0, 0, 0)
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if e != 0 {
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err = e
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}
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return
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}
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func connect(s int, addr unsafe.Pointer, addrlen _Socklen) (err error) {
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_, e := socketcall(_CONNECT, uintptr(s), uintptr(addr), uintptr(addrlen), 0, 0, 0)
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if e != 0 {
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err = e
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}
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return
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}
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func socket(domain int, typ int, proto int) (fd int, err error) {
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fd, e := rawsocketcall(_SOCKET, uintptr(domain), uintptr(typ), uintptr(proto), 0, 0, 0)
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if e != 0 {
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err = e
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}
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return
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}
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func getsockopt(s int, level int, name int, val unsafe.Pointer, vallen *_Socklen) (err error) {
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_, e := socketcall(_GETSOCKOPT, uintptr(s), uintptr(level), uintptr(name), uintptr(val), uintptr(unsafe.Pointer(vallen)), 0)
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if e != 0 {
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err = e
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}
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return
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}
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func setsockopt(s int, level int, name int, val unsafe.Pointer, vallen uintptr) (err error) {
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_, e := socketcall(_SETSOCKOPT, uintptr(s), uintptr(level), uintptr(name), uintptr(val), vallen, 0)
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if e != 0 {
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err = e
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}
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return
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}
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func recvfrom(s int, p []byte, flags int, from *RawSockaddrAny, fromlen *_Socklen) (n int, err error) {
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var base uintptr
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if len(p) > 0 {
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base = uintptr(unsafe.Pointer(&p[0]))
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}
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n, e := socketcall(_RECVFROM, uintptr(s), base, uintptr(len(p)), uintptr(flags), uintptr(unsafe.Pointer(from)), uintptr(unsafe.Pointer(fromlen)))
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if e != 0 {
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err = e
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}
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return
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}
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func sendto(s int, p []byte, flags int, to unsafe.Pointer, addrlen _Socklen) (err error) {
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var base uintptr
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if len(p) > 0 {
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base = uintptr(unsafe.Pointer(&p[0]))
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}
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_, e := socketcall(_SENDTO, uintptr(s), base, uintptr(len(p)), uintptr(flags), uintptr(to), uintptr(addrlen))
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if e != 0 {
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err = e
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}
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return
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}
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func recvmsg(s int, msg *Msghdr, flags int) (n int, err error) {
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n, e := socketcall(_RECVMSG, uintptr(s), uintptr(unsafe.Pointer(msg)), uintptr(flags), 0, 0, 0)
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if e != 0 {
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err = e
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}
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return
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}
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func sendmsg(s int, msg *Msghdr, flags int) (n int, err error) {
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n, e := socketcall(_SENDMSG, uintptr(s), uintptr(unsafe.Pointer(msg)), uintptr(flags), 0, 0, 0)
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if e != 0 {
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err = e
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}
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return
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}
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func Listen(s int, n int) (err error) {
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_, e := socketcall(_LISTEN, uintptr(s), uintptr(n), 0, 0, 0, 0)
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if e != 0 {
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err = e
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}
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return
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}
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func Shutdown(s, how int) (err error) {
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_, e := socketcall(_SHUTDOWN, uintptr(s), uintptr(how), 0, 0, 0, 0)
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if e != 0 {
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err = e
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}
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return
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}
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func (r *PtraceRegs) PC() uint64 { return r.Psw.Addr }
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func (r *PtraceRegs) SetPC(pc uint64) { r.Psw.Addr = pc }
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func (iov *Iovec) SetLen(length int) {
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iov.Len = uint64(length)
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}
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func (msghdr *Msghdr) SetControllen(length int) {
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msghdr.Controllen = uint64(length)
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}
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func (cmsg *Cmsghdr) SetLen(length int) {
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cmsg.Len = uint64(length)
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}
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func rawVforkSyscall(trap, a1 uintptr) (r1 uintptr, err Errno) {
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panic("not implemented")
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}
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