2009-06-04 14:33:40 -06:00
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// 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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package syscall
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import (
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"syscall";
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"unsafe";
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)
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func Getpagesize() int {
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return 4096
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}
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func TimespecToNsec(ts Timespec) int64 {
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return int64(ts.Sec)*1e9 + int64(ts.Nsec);
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}
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func NsecToTimespec(nsec int64) (ts Timespec) {
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ts.Sec = int32(nsec / 1e9);
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ts.Nsec = int32(nsec % 1e9);
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return;
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}
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func TimevalToNsec(tv Timeval) int64 {
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return int64(tv.Sec)*1e9 + int64(tv.Usec)*1e3;
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}
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func NsecToTimeval(nsec int64) (tv Timeval) {
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nsec += 999; // round up to microsecond
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tv.Sec = int32(nsec/1e9);
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tv.Usec = int32(nsec%1e9 / 1e3);
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return;
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}
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2009-06-16 18:17:02 -06:00
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// 64-bit file system and 32-bit uid calls
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// (386 default is 32-bit file system and 16-bit uid).
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//sys Chown(path string, uid int, gid int) (errno int) = SYS_CHOWN32
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//sys Fchown(fd int, uid int, gid int) (errno int) = SYS_FCHOWN32
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//sys Fstat(fd int, stat *Stat_t) (errno int) = SYS_FSTAT64
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//sys Fstatfs(fd int, buf *Statfs_t) (errno int) = SYS_FSTATFS64
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//sys Getegid() (egid int) = SYS_GETEGID32
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//sys Geteuid() (euid int) = SYS_GETEUID32
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//sys Getgid() (gid int) = SYS_GETGID32
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//sys Getuid() (uid int) = SYS_GETUID32
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//sys Lchown(path string, uid int, gid int) (errno int) = SYS_LCHOWN32
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//sys Lstat(path string, stat *Stat_t) (errno int) = SYS_LSTAT64
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//sys Setfsgid(gid int) (errno int) = SYS_SETFSGID32
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//sys Setfsuid(uid int) (errno int) = SYS_SETFSUID32
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//sys Setgid(gid int) (errno int) = SYS_SETGID32
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//sys Setregid(rgid int, egid int) (errno int) = SYS_SETREGID32
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//sys Setresgid(rgid int, egid int, sgid int) (errno int) = SYS_SETRESGID32
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//sys Setresuid(ruid int, euid int, suid int) (errno int) = SYS_SETRESUID32
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//sys Setreuid(ruid int, euid int) (errno int) = SYS_SETREUID32
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//sys Stat(path string, stat *Stat_t) (errno int) = SYS_STAT64
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//sys Statfs(path string, buf *Statfs_t) (errno int) = SYS_STATFS64
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//sys getgroups(n int, list *_Gid_t) (nn int, errno int) = SYS_GETGROUPS32
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//sys setgroups(n int, list *_Gid_t) (errno int) = SYS_SETGROUPS32
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2009-06-17 16:16:06 -06:00
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//sys Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (n int, errno int) = SYS__NEWSELECT
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2009-06-16 18:17:02 -06:00
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// Underlying system call writes to newoffset via pointer.
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// Implemented in assembly to avoid allocation.
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func Seek(fd int, offset int64, whence int) (newoffset int64, errno int)
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2009-06-04 14:33:40 -06:00
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// On x86 Linux, all the socket calls go through an extra indirection,
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// I think because the 5-register system call interface can't handle
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// the 6-argument calls like sendto and recvfrom. Instead the
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// 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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)
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func socketcall(call int, a0, a1, a2, a3, a4, a5 uintptr) (n int, errno int)
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func accept(s int, rsa *RawSockaddrAny, addrlen *_Socklen) (fd int, errno int) {
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2009-06-17 16:16:06 -06:00
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fd, errno = socketcall(_ACCEPT, uintptr(s), uintptr(unsafe.Pointer(rsa)), uintptr(unsafe.Pointer(addrlen)), 0, 0, 0);
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2009-06-04 14:33:40 -06:00
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return;
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}
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func bind(s int, addr uintptr, addrlen _Socklen) (errno int) {
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var _ int;
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_, errno = socketcall(_BIND, uintptr(s), uintptr(addr), uintptr(addrlen), 0, 0, 0);
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return;
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}
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func connect(s int, addr uintptr, addrlen _Socklen) (errno int) {
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var _ int;
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_, errno = socketcall(_CONNECT, uintptr(s), uintptr(addr), uintptr(addrlen), 0, 0, 0);
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return;
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}
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func socket(domain int, typ int, proto int) (fd int, errno int) {
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fd, errno = socketcall(_SOCKET, uintptr(domain), uintptr(typ), uintptr(proto), 0, 0, 0);
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return;
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}
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func setsockopt(s int, level int, name int, val uintptr, vallen int) (errno int) {
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var _ int;
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_, errno = socketcall(_SETSOCKOPT, uintptr(s), uintptr(level), uintptr(name), uintptr(val), uintptr(vallen), 0);
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return;
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}
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func Listen(s int, n int) (errno int) {
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var _ int;
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_, errno = socketcall(_LISTEN, uintptr(s), uintptr(n), 0, 0, 0, 0);
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return;
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}
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