diff options
Diffstat (limited to 'libgo/syscalls/socket_linux.go')
| -rw-r--r-- | libgo/syscalls/socket_linux.go | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/libgo/syscalls/socket_linux.go b/libgo/syscalls/socket_linux.go index cdcdf4f..57ea7c3 100644 --- a/libgo/syscalls/socket_linux.go +++ b/libgo/syscalls/socket_linux.go @@ -6,9 +6,55 @@ package syscall +import "unsafe" + const SizeofSockaddrInet4 = 16 const SizeofSockaddrInet6 = 28 const SizeofSockaddrUnix = 110 +const SizeofSockaddrLinklayer = 20 +const SizeofSockaddrNetlink = 12 + +type SockaddrLinklayer struct { + Protocol uint16 + Ifindex int + Hatype uint16 + Pkttype uint8 + Halen uint8 + Addr [8]byte + raw RawSockaddrLinklayer +} + +func (sa *SockaddrLinklayer) sockaddr() (*RawSockaddrAny, Socklen_t, int) { + if sa.Ifindex < 0 || sa.Ifindex > 0x7fffffff { + return nil, 0, EINVAL + } + sa.raw.Family = AF_PACKET + sa.raw.Protocol = sa.Protocol + sa.raw.Ifindex = int32(sa.Ifindex) + sa.raw.Hatype = sa.Hatype + sa.raw.Pkttype = sa.Pkttype + sa.raw.Halen = sa.Halen + for i := 0; i < len(sa.Addr); i++ { + sa.raw.Addr[i] = sa.Addr[i] + } + return (*RawSockaddrAny)(unsafe.Pointer(&sa.raw)), SizeofSockaddrLinklayer, 0 +} + +type SockaddrNetlink struct { + Family uint16 + Pad uint16 + Pid uint32 + Groups uint32 + raw RawSockaddrNetlink +} + +func (sa *SockaddrNetlink) sockaddr() (*RawSockaddrAny, Socklen_t, int) { + sa.raw.Family = AF_NETLINK + sa.raw.Pad = sa.Pad + sa.raw.Pid = sa.Pid + sa.raw.Groups = sa.Groups + return (*RawSockaddrAny)(unsafe.Pointer(&sa.raw)), SizeofSockaddrNetlink, 0 +} type RawSockaddrInet4 struct { Family uint16; @@ -64,6 +110,23 @@ func (sa *RawSockaddrUnix) getLen() (int, int) { return n, 0 } +type RawSockaddrLinklayer struct { + Family uint16 + Protocol uint16 + Ifindex int32 + Hatype uint16 + Pkttype uint8 + Halen uint8 + Addr [8]uint8 +} + +type RawSockaddrNetlink struct { + Family uint16 + Pad uint16 + Pid uint32 + Groups uint32 +} + type RawSockaddr struct { Family uint16; Data [14]int8; @@ -73,3 +136,30 @@ type RawSockaddr struct { func BindToDevice(fd int, device string) (errno int) { return SetsockoptString(fd, SOL_SOCKET, SO_BINDTODEVICE, device) } + +func anyToSockaddrOS(rsa *RawSockaddrAny) (Sockaddr, int) { + switch rsa.Addr.Family { + case AF_NETLINK: + pp := (*RawSockaddrNetlink)(unsafe.Pointer(rsa)) + sa := new(SockaddrNetlink) + sa.Family = pp.Family + sa.Pad = pp.Pad + sa.Pid = pp.Pid + sa.Groups = pp.Groups + return sa, 0 + + case AF_PACKET: + pp := (*RawSockaddrLinklayer)(unsafe.Pointer(rsa)) + sa := new(SockaddrLinklayer) + sa.Protocol = pp.Protocol + sa.Ifindex = int(pp.Ifindex) + sa.Hatype = pp.Hatype + sa.Pkttype = pp.Pkttype + sa.Halen = pp.Halen + for i := 0; i < len(sa.Addr); i++ { + sa.Addr[i] = pp.Addr[i] + } + return sa, 0 + } + return nil, EAFNOSUPPORT; +} |