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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2009-08-12 14:19:17 -06:00
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import "unsafe"
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2009-06-04 14:33:40 -06:00
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2009-12-15 16:40:16 -07:00
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func Getpagesize() int { return 4096 }
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2009-06-04 14:33:40 -06:00
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2009-12-15 16:40:16 -07:00
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func TimespecToNsec(ts Timespec) int64 { return int64(ts.Sec)*1e9 + int64(ts.Nsec) }
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2009-06-04 14:33:40 -06:00
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func NsecToTimespec(nsec int64) (ts Timespec) {
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2009-12-15 16:40:16 -07:00
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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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2009-06-04 14:33:40 -06:00
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}
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2009-12-15 16:40:16 -07:00
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func TimevalToNsec(tv Timeval) int64 { return int64(tv.Sec)*1e9 + int64(tv.Usec)*1e3 }
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2009-06-04 14:33:40 -06:00
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func NsecToTimeval(nsec int64) (tv Timeval) {
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2009-12-15 16:40:16 -07:00
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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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2009-06-04 14:33:40 -06:00
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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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2010-11-05 14:41:23 -06:00
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//sys Ftruncate(fd int, length int64) (errno int) = SYS_FTRUNCATE64
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2009-06-16 18:17:02 -06:00
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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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2009-10-06 17:39:38 -06:00
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//sys Ioperm(from int, num int, on int) (errno int)
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//sys Iopl(level int) (errno int)
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2009-06-16 18:17:02 -06:00
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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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2010-10-20 08:39:46 -06:00
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//sys Pread(fd int, p []byte, offset int64) (n int, errno int) = SYS_PREAD64
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//sys Pwrite(fd int, p []byte, offset int64) (n int, errno int) = SYS_PWRITE64
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2009-06-16 18:17:02 -06:00
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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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2011-01-05 12:35:07 -07:00
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//sys Splice(rfd int, roff *int64, wfd int, woff *int64, len int, flags int) (n int, errno int)
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//sys Stat(path string, stat *Stat_t) (errno int) = SYS_STAT64
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2009-10-06 17:39:38 -06:00
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//sys SyncFileRange(fd int, off int64, n int64, flags int) (errno int)
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2010-11-05 14:41:23 -06:00
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//sys Truncate(path string, length int64) (errno int) = SYS_TRUNCATE64
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2009-06-16 18:17:02 -06:00
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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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2010-09-21 07:49:56 -06:00
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// Vsyscalls on amd64.
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//sys Gettimeofday(tv *Timeval) (errno int)
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//sys Time(t *Time_t) (tt Time_t, 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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fd, errno = socketcall(_ACCEPT, uintptr(s), uintptr(unsafe.Pointer(rsa)), uintptr(unsafe.Pointer(addrlen)), 0, 0, 0)
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return
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2009-06-04 14:33:40 -06:00
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}
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2009-06-17 22:44:26 -06:00
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func getsockname(s int, rsa *RawSockaddrAny, addrlen *_Socklen) (errno int) {
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_, errno = socketcall(_GETSOCKNAME, uintptr(s), uintptr(unsafe.Pointer(rsa)), uintptr(unsafe.Pointer(addrlen)), 0, 0, 0)
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return
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2009-06-17 22:44:26 -06:00
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}
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func getpeername(s int, rsa *RawSockaddrAny, addrlen *_Socklen) (errno int) {
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_, errno = socketcall(_GETPEERNAME, uintptr(s), uintptr(unsafe.Pointer(rsa)), uintptr(unsafe.Pointer(addrlen)), 0, 0, 0)
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return
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2009-06-17 22:44:26 -06:00
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}
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2010-08-20 07:12:21 -06:00
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func socketpair(domain int, typ int, flags int, fd *[2]int) (errno int) {
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_, errno = socketcall(_SOCKETPAIR, uintptr(domain), uintptr(typ), uintptr(flags), uintptr(unsafe.Pointer(fd)), 0, 0)
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2010-06-30 15:58:21 -06:00
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return
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}
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2009-06-04 14:33:40 -06:00
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func bind(s int, addr uintptr, addrlen _Socklen) (errno int) {
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2009-12-15 16:40:16 -07:00
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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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2009-06-04 14:33:40 -06:00
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}
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func connect(s int, addr uintptr, addrlen _Socklen) (errno 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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2009-06-04 14:33:40 -06:00
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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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2009-06-04 14:33:40 -06:00
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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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2009-12-15 16:40:16 -07:00
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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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2009-06-04 14:33:40 -06:00
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}
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2009-11-01 12:13:27 -07:00
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func recvfrom(s int, p []byte, flags int, from *RawSockaddrAny, fromlen *_Socklen) (n int, errno int) {
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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, errno = socketcall(_RECVFROM, uintptr(s), base, uintptr(len(p)), uintptr(flags), uintptr(unsafe.Pointer(from)), uintptr(unsafe.Pointer(fromlen)))
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return
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2009-11-01 12:13:27 -07:00
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}
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func sendto(s int, p []byte, flags int, to uintptr, addrlen _Socklen) (errno int) {
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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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2009-12-15 16:40:16 -07:00
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_, errno = socketcall(_SENDTO, uintptr(s), base, uintptr(len(p)), uintptr(flags), to, uintptr(addrlen))
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return
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2009-11-05 11:55:57 -07:00
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}
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2009-11-01 12:13:27 -07:00
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2010-12-07 11:40:14 -07:00
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func recvmsg(s int, msg *Msghdr, flags int) (n int, errno int) {
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n, errno = socketcall(_RECVMSG, uintptr(s), uintptr(unsafe.Pointer(msg)), uintptr(flags), 0, 0, 0)
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return
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}
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func sendmsg(s int, msg *Msghdr, flags int) (errno int) {
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_, errno = socketcall(_SENDMSG, uintptr(s), uintptr(unsafe.Pointer(msg)), uintptr(flags), 0, 0, 0)
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return
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}
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2009-06-04 14:33:40 -06:00
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func Listen(s int, n int) (errno 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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2009-06-04 14:33:40 -06:00
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}
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2009-09-03 17:17:21 -06:00
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2009-12-02 09:24:14 -07:00
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func Shutdown(s, how int) (errno int) {
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2009-12-15 16:40:16 -07:00
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_, errno = socketcall(_SHUTDOWN, uintptr(s), uintptr(how), 0, 0, 0, 0)
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return
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2009-12-02 09:24:14 -07:00
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}
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2009-12-04 22:58:32 -07:00
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func Fstatfs(fd int, buf *Statfs_t) (errno int) {
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2009-12-15 16:40:16 -07:00
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_, _, e1 := Syscall(SYS_FSTATFS64, uintptr(fd), uintptr(unsafe.Sizeof(*buf)), uintptr(unsafe.Pointer(buf)))
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errno = int(e1)
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return
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2009-12-04 22:58:32 -07:00
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}
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func Statfs(path string, buf *Statfs_t) (errno int) {
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_, _, e1 := Syscall(SYS_STATFS64, uintptr(unsafe.Pointer(StringBytePtr(path))), uintptr(unsafe.Sizeof(*buf)), uintptr(unsafe.Pointer(buf)))
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errno = int(e1)
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return
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2009-12-04 22:58:32 -07:00
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}
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2009-12-15 16:40:16 -07:00
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func (r *PtraceRegs) PC() uint64 { return uint64(uint32(r.Eip)) }
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2009-09-03 17:17:21 -06:00
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2009-12-15 16:40:16 -07:00
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func (r *PtraceRegs) SetPC(pc uint64) { r.Eip = int32(pc) }
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2010-12-07 11:40:14 -07:00
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func (iov *Iovec) SetLen(length int) {
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iov.Len = uint32(length)
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}
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func (msghdr *Msghdr) SetControllen(length int) {
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msghdr.Controllen = uint32(length)
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}
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func (cmsg *Cmsghdr) SetLen(length int) {
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cmsg.Len = uint32(length)
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}
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