syscall: update multicast socket options for darwin, freebsd, linux, openbsd

R=golang-dev, dave
CC=golang-dev
https://golang.org/cl/5137042

src/pkg/syscall/syscall_bsd.go

@@ -377,6 +377,26 @@ func GetsockoptInt(fd, level, opt int) (value, errno int) {
 	return int(n), errno
 }
 
+func GetsockoptInet4Addr(fd, level, opt int) (value [4]byte, errno int) {
+	vallen := _Socklen(4)
+	errno = getsockopt(fd, level, opt, uintptr(unsafe.Pointer(&value[0])), &vallen)
+	return value, errno
+}
+
+func GetsockoptIPMreq(fd, level, opt int) (*IPMreq, int) {
+	var value IPMreq
+	vallen := _Socklen(SizeofIPMreq)
+	errno := getsockopt(fd, level, opt, uintptr(unsafe.Pointer(&value)), &vallen)
+	return &value, errno
+}
+
+func GetsockoptIPv6Mreq(fd, level, opt int) (*IPv6Mreq, int) {
+	var value IPv6Mreq
+	vallen := _Socklen(SizeofIPv6Mreq)
+	errno := getsockopt(fd, level, opt, uintptr(unsafe.Pointer(&value)), &vallen)
+	return &value, errno
+}
+
 func SetsockoptByte(fd, level, opt int, value byte) (errno int) {
 	var n = byte(value)
 	return setsockopt(fd, level, opt, uintptr(unsafe.Pointer(&n)), 1)
@@ -387,6 +407,10 @@ func SetsockoptInt(fd, level, opt int, value int) (errno int) {
 	return setsockopt(fd, level, opt, uintptr(unsafe.Pointer(&n)), 4)
 }
 
+func SetsockoptInet4Addr(fd, level, opt int, value [4]byte) (errno int) {
+	return setsockopt(fd, level, opt, uintptr(unsafe.Pointer(&value[0])), 4)
+}
+
 func SetsockoptTimeval(fd, level, opt int, tv *Timeval) (errno int) {
 	return setsockopt(fd, level, opt, uintptr(unsafe.Pointer(tv)), unsafe.Sizeof(*tv))
 }

src/pkg/syscall/syscall_freebsd.go

@@ -71,6 +71,17 @@ func Sendfile(outfd int, infd int, offset *int64, count int) (written int, errno
 	return -1, ENOSYS
 }
 
+func GetsockoptIPMreqn(fd, level, opt int) (*IPMreqn, int) {
+	var value IPMreqn
+	vallen := _Socklen(SizeofIPMreqn)
+	errno := getsockopt(fd, level, opt, uintptr(unsafe.Pointer(&value)), &vallen)
+	return &value, errno
+}
+
+func SetsockoptIPMreqn(fd, level, opt int, mreq *IPMreqn) (errno int) {
+	return setsockopt(fd, level, opt, uintptr(unsafe.Pointer(mreq)), unsafe.Sizeof(*mreq))
+}
+
 /*
  * Exposed directly
  */

src/pkg/syscall/syscall_linux.go

@@ -450,11 +450,42 @@ func GetsockoptInt(fd, level, opt int) (value, errno int) {
 	return int(n), errno
 }
 
+func GetsockoptInet4Addr(fd, level, opt int) (value [4]byte, errno int) {
+	vallen := _Socklen(4)
+	errno = getsockopt(fd, level, opt, uintptr(unsafe.Pointer(&value[0])), &vallen)
+	return value, errno
+}
+
+func GetsockoptIPMreq(fd, level, opt int) (*IPMreq, int) {
+	var value IPMreq
+	vallen := _Socklen(SizeofIPMreq)
+	errno := getsockopt(fd, level, opt, uintptr(unsafe.Pointer(&value)), &vallen)
+	return &value, errno
+}
+
+func GetsockoptIPMreqn(fd, level, opt int) (*IPMreqn, int) {
+	var value IPMreqn
+	vallen := _Socklen(SizeofIPMreqn)
+	errno := getsockopt(fd, level, opt, uintptr(unsafe.Pointer(&value)), &vallen)
+	return &value, errno
+}
+
+func GetsockoptIPv6Mreq(fd, level, opt int) (*IPv6Mreq, int) {
+	var value IPv6Mreq
+	vallen := _Socklen(SizeofIPv6Mreq)
+	errno := getsockopt(fd, level, opt, uintptr(unsafe.Pointer(&value)), &vallen)
+	return &value, errno
+}
+
 func SetsockoptInt(fd, level, opt int, value int) (errno int) {
 	var n = int32(value)
 	return setsockopt(fd, level, opt, uintptr(unsafe.Pointer(&n)), 4)
 }
 
+func SetsockoptInet4Addr(fd, level, opt int, value [4]byte) (errno int) {
+	return setsockopt(fd, level, opt, uintptr(unsafe.Pointer(&value[0])), 4)
+}
+
 func SetsockoptTimeval(fd, level, opt int, tv *Timeval) (errno int) {
 	return setsockopt(fd, level, opt, uintptr(unsafe.Pointer(tv)), unsafe.Sizeof(*tv))
 }
@@ -467,6 +498,10 @@ func SetsockoptIPMreq(fd, level, opt int, mreq *IPMreq) (errno int) {
 	return setsockopt(fd, level, opt, uintptr(unsafe.Pointer(mreq)), unsafe.Sizeof(*mreq))
 }
 
+func SetsockoptIPMreqn(fd, level, opt int, mreq *IPMreqn) (errno int) {
+	return setsockopt(fd, level, opt, uintptr(unsafe.Pointer(mreq)), unsafe.Sizeof(*mreq))
+}
+
 func SetsockoptIPv6Mreq(fd, level, opt int, mreq *IPv6Mreq) (errno int) {
 	return setsockopt(fd, level, opt, uintptr(unsafe.Pointer(mreq)), unsafe.Sizeof(*mreq))
 }

src/pkg/syscall/types_freebsd.c

@@ -116,6 +116,7 @@ typedef socklen_t $_Socklen;
 typedef struct linger $Linger;
 typedef struct iovec $Iovec;
 typedef struct ip_mreq $IPMreq;
+typedef struct ip_mreqn $IPMreqn;
 typedef struct ipv6_mreq $IPv6Mreq;
 typedef struct msghdr $Msghdr;
 typedef struct cmsghdr $Cmsghdr;
@@ -129,6 +130,7 @@ enum {
 	$SizeofSockaddrDatalink = sizeof(struct sockaddr_dl),
 	$SizeofLinger = sizeof(struct linger),
 	$SizeofIPMreq = sizeof(struct ip_mreq),
+	$SizeofIPMreqn = sizeof(struct ip_mreqn),
 	$SizeofIPv6Mreq = sizeof(struct ipv6_mreq),
 	$SizeofMsghdr = sizeof(struct msghdr),
 	$SizeofCmsghdr = sizeof(struct cmsghdr),

src/pkg/syscall/types_linux.c

@@ -114,6 +114,7 @@ typedef socklen_t $_Socklen;
 typedef struct linger $Linger;
 typedef struct iovec $Iovec;
 typedef struct ip_mreq $IPMreq;
+typedef struct ip_mreqn $IPMreqn;
 typedef struct ipv6_mreq $IPv6Mreq;
 typedef struct msghdr $Msghdr;
 typedef struct cmsghdr $Cmsghdr;
@@ -130,6 +131,7 @@ enum {
 	$SizeofSockaddrNetlink = sizeof(struct sockaddr_nl),
 	$SizeofLinger = sizeof(struct linger),
 	$SizeofIPMreq = sizeof(struct ip_mreq),
+	$SizeofIPMreqn = sizeof(struct ip_mreqn),
 	$SizeofIPv6Mreq = sizeof(struct ipv6_mreq),
 	$SizeofMsghdr = sizeof(struct msghdr),
 	$SizeofCmsghdr = sizeof(struct cmsghdr),

src/pkg/syscall/ztypes_freebsd_386.go

@@ -33,6 +33,7 @@ const (
 	SizeofSockaddrDatalink = 0x36
 	SizeofLinger           = 0x8
 	SizeofIPMreq           = 0x8
+	SizeofIPMreqn          = 0xc
 	SizeofIPv6Mreq         = 0x14
 	SizeofMsghdr           = 0x1c
 	SizeofCmsghdr          = 0xc
@@ -227,6 +228,12 @@ type IPMreq struct {
 	Interface [4]byte /* in_addr */
 }
 
+type IPMreqn struct {
+	Multiaddr [4]byte /* in_addr */
+	Address   [4]byte /* in_addr */
+	Ifindex   int32
+}
+
 type IPv6Mreq struct {
 	Multiaddr [16]byte /* in6_addr */
 	Interface uint32

src/pkg/syscall/ztypes_freebsd_amd64.go

@@ -33,6 +33,7 @@ const (
 	SizeofSockaddrDatalink = 0x36
 	SizeofLinger           = 0x8
 	SizeofIPMreq           = 0x8
+	SizeofIPMreqn          = 0xc
 	SizeofIPv6Mreq         = 0x14
 	SizeofMsghdr           = 0x30
 	SizeofCmsghdr          = 0xc
@@ -228,6 +229,12 @@ type IPMreq struct {
 	Interface [4]byte /* in_addr */
 }
 
+type IPMreqn struct {
+	Multiaddr [4]byte /* in_addr */
+	Address   [4]byte /* in_addr */
+	Ifindex   int32
+}
+
 type IPv6Mreq struct {
 	Multiaddr [16]byte /* in6_addr */
 	Interface uint32

src/pkg/syscall/ztypes_linux_386.go

@@ -20,6 +20,7 @@ const (
 	SizeofSockaddrNetlink   = 0xc
 	SizeofLinger            = 0x8
 	SizeofIPMreq            = 0x8
+	SizeofIPMreqn           = 0xc
 	SizeofIPv6Mreq          = 0x14
 	SizeofMsghdr            = 0x1c
 	SizeofCmsghdr           = 0xc
@@ -308,6 +309,12 @@ type IPMreq struct {
 	Interface [4]byte /* in_addr */
 }
 
+type IPMreqn struct {
+	Multiaddr [4]byte /* in_addr */
+	Address   [4]byte /* in_addr */
+	Ifindex   int32
+}
+
 type IPv6Mreq struct {
 	Multiaddr [16]byte /* in6_addr */
 	Interface uint32

src/pkg/syscall/ztypes_linux_amd64.go

@@ -20,6 +20,7 @@ const (
 	SizeofSockaddrNetlink   = 0xc
 	SizeofLinger            = 0x8
 	SizeofIPMreq            = 0x8
+	SizeofIPMreqn           = 0xc
 	SizeofIPv6Mreq          = 0x14
 	SizeofMsghdr            = 0x38
 	SizeofCmsghdr           = 0x10
@@ -308,6 +309,12 @@ type IPMreq struct {
 	Interface [4]byte /* in_addr */
 }
 
+type IPMreqn struct {
+	Multiaddr [4]byte /* in_addr */
+	Address   [4]byte /* in_addr */
+	Ifindex   int32
+}
+
 type IPv6Mreq struct {
 	Multiaddr [16]byte /* in6_addr */
 	Interface uint32

src/pkg/syscall/ztypes_linux_arm.go

@@ -25,6 +25,7 @@ const (
 	SizeofSockaddrNetlink   = 0xc
 	SizeofLinger            = 0x8
 	SizeofIPMreq            = 0x8
+	SizeofIPMreqn           = 0xc
 	SizeofIPv6Mreq          = 0x14
 	SizeofMsghdr            = 0x1c
 	SizeofCmsghdr           = 0xc
@@ -315,6 +316,12 @@ type IPMreq struct {
 	Interface [4]byte /* in_addr */
 }
 
+type IPMreqn struct {
+	Multiaddr [4]byte /* in_addr */
+	Address   [4]byte /* in_addr */
+	Ifindex   int32
+}
+
 type IPv6Mreq struct {
 	Multiaddr [16]byte /* in6_addr */
 	Interface uint32