syscall: add socketpair

R=rsc
CC=golang-dev
https://golang.org/cl/1319042

src/pkg/syscall/syscall_bsd.go

@@ -323,6 +323,11 @@ func Socket(domain, typ, proto int) (fd, errno int) {
 	return
 }
 
+func Socketpair(domain, typ, proto int) (fd [2]int, errno int) {
+	fd, errno = socketpair(domain, typ, proto)
+	return
+}
+
 func SetsockoptInt(fd, level, opt int, value int) (errno int) {
 	var n = int32(value)
 	return setsockopt(fd, level, opt, uintptr(unsafe.Pointer(&n)), 4)

src/pkg/syscall/syscall_linux.go

@@ -368,6 +368,11 @@ func Socket(domain, typ, proto int) (fd, errno int) {
 	return
 }
 
+func Socketpair(domain, typ, proto int) (fd [2]int, errno int) {
+	fd, errno = socketpair(domain, typ, proto)
+	return
+}
+
 func SetsockoptInt(fd, level, opt int, value int) (errno int) {
 	var n = int32(value)
 	return setsockopt(fd, level, opt, uintptr(unsafe.Pointer(&n)), 4)

src/pkg/syscall/syscall_linux_386.go

@@ -100,6 +100,13 @@ func getpeername(s int, rsa *RawSockaddrAny, addrlen *_Socklen) (errno int) {
 	return
 }
 
+func socketpair(domain int, typ int, proto int) (fd [2]int, errno int) {
+	var f [2]int
+	_, errno = socketcall(_SOCKETPAIR, uintptr(domain), uintptr(typ), uintptr(proto), uintptr(unsafe.Pointer(&f)), 0, 0)
+	fd = f
+	return
+}
+
 func bind(s int, addr uintptr, addrlen _Socklen) (errno int) {
 	_, errno = socketcall(_BIND, uintptr(s), uintptr(addr), uintptr(addrlen), 0, 0, 0)
 	return

src/pkg/syscall/zsyscall_darwin_386.go

@@ -59,6 +59,15 @@ func socket(domain int, typ int, proto int) (fd int, errno int) {
 	return
 }
 
+func socketpair(domain int, typ int, proto int) (fd [2]int, errno int) {
+	var f [2]int
+	_, _, e1 := Syscall6(SYS_SOCKETPAIR, uintptr(domain), uintptr(typ), uintptr(proto), uintptr(unsafe.Pointer(&f)), 0, 0)
+	fd = f
+	errno = int(e1)
+	return
+}
+
+
 func setsockopt(s int, level int, name int, val uintptr, vallen int) (errno int) {
 	_, _, e1 := Syscall6(SYS_SETSOCKOPT, uintptr(s), uintptr(level), uintptr(name), uintptr(val), uintptr(vallen), 0)
 	errno = int(e1)

src/pkg/syscall/zsyscall_darwin_amd64.go

@@ -59,6 +59,14 @@ func socket(domain int, typ int, proto int) (fd int, errno int) {
 	return
 }
 
+func socketpair(domain int, typ int, proto int) (fd [2]int, errno int) {
+	var f [2]int
+	_, _, e1 := Syscall6(SYS_SOCKETPAIR, uintptr(domain), uintptr(typ), uintptr(proto), uintptr(unsafe.Pointer(&f)), 0, 0)
+	fd = f
+	errno = int(e1)
+	return
+}
+
 func setsockopt(s int, level int, name int, val uintptr, vallen int) (errno int) {
 	_, _, e1 := Syscall6(SYS_SETSOCKOPT, uintptr(s), uintptr(level), uintptr(name), uintptr(val), uintptr(vallen), 0)
 	errno = int(e1)

src/pkg/syscall/zsyscall_freebsd_386.go

@@ -59,6 +59,14 @@ func socket(domain int, typ int, proto int) (fd int, errno int) {
 	return
 }
 
+func socketpair(domain int, typ int, proto int) (fd [2]int, errno int) {
+	var f [2]int
+	_, _, e1 := Syscall6(SYS_SOCKETPAIR, uintptr(domain), uintptr(typ), uintptr(proto), uintptr(unsafe.Pointer(&f)), 0, 0)
+	fd = f
+	errno = int(e1)
+	return
+}
+
 func setsockopt(s int, level int, name int, val uintptr, vallen int) (errno int) {
 	_, _, e1 := Syscall6(SYS_SETSOCKOPT, uintptr(s), uintptr(level), uintptr(name), uintptr(val), uintptr(vallen), 0)
 	errno = int(e1)

src/pkg/syscall/zsyscall_freebsd_amd64.go

@@ -59,6 +59,15 @@ func socket(domain int, typ int, proto int) (fd int, errno int) {
 	return
 }
 
+func socketpair(domain int, typ int, proto int) (fd [2]int, errno int) {
+	var f [2]int
+	_, _, e1 := Syscall6(SYS_SOCKETPAIR, uintptr(domain), uintptr(typ), uintptr(proto), uintptr(unsafe.Pointer(&f)), 0, 0)
+	fd = f
+	errno = int(e1)
+	return
+}
+
+
 func setsockopt(s int, level int, name int, val uintptr, vallen int) (errno int) {
 	_, _, e1 := Syscall6(SYS_SETSOCKOPT, uintptr(s), uintptr(level), uintptr(name), uintptr(val), uintptr(vallen), 0)
 	errno = int(e1)

src/pkg/syscall/zsyscall_linux_amd64.go

@@ -786,6 +786,14 @@ func socket(domain int, typ int, proto int) (fd int, errno int) {
 	return
 }
 
+func socketpair(domain int, typ int, proto int) (fd [2]int, errno int) {
+	var f [2]int
+	_, _, e1 := Syscall6(SYS_SOCKETPAIR, uintptr(domain), uintptr(typ), uintptr(proto), uintptr(unsafe.Pointer(&f)), 0, 0)
+	fd = f
+	errno = int(e1)
+	return
+}
+
 func getpeername(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (errno int) {
 	_, _, e1 := Syscall(SYS_GETPEERNAME, uintptr(fd), uintptr(unsafe.Pointer(rsa)), uintptr(unsafe.Pointer(addrlen)))
 	errno = int(e1)

src/pkg/syscall/zsyscall_linux_arm.go

@@ -628,6 +628,14 @@ func socket(domain int, typ int, proto int) (fd int, errno int) {
 	return
 }
 
+func socketpair(domain int, typ int, proto int) (fd [2]int, errno int) {
+	var f [2]int
+	_, _, e1 := Syscall6(SYS_SOCKETPAIR, uintptr(domain), uintptr(typ), uintptr(proto), uintptr(unsafe.Pointer(&f)), 0, 0)
+	fd = f
+	errno = int(e1)
+	return
+}
+
 func getpeername(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (errno int) {
 	_, _, e1 := Syscall(SYS_GETPEERNAME, uintptr(fd), uintptr(unsafe.Pointer(rsa)), uintptr(unsafe.Pointer(addrlen)))
 	errno = int(e1)