diff options
Diffstat (limited to 'pkg/abi/linux/socket.go')
| -rw-r--r-- | pkg/abi/linux/socket.go | 290 |
1 files changed, 290 insertions, 0 deletions
diff --git a/pkg/abi/linux/socket.go b/pkg/abi/linux/socket.go new file mode 100644 index 000000000..9a78cc131 --- /dev/null +++ b/pkg/abi/linux/socket.go @@ -0,0 +1,290 @@ +// Copyright 2018 Google Inc. +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package linux + +import "gvisor.googlesource.com/gvisor/pkg/binary" + +// Address families, from linux/socket.h. +const ( + AF_UNSPEC = 0 + AF_UNIX = 1 + AF_INET = 2 + AF_AX25 = 3 + AF_IPX = 4 + AF_APPLETALK = 5 + AF_NETROM = 6 + AF_BRIDGE = 7 + AF_ATMPVC = 8 + AF_X25 = 9 + AF_INET6 = 10 + AF_ROSE = 11 + AF_DECnet = 12 + AF_NETBEUI = 13 + AF_SECURITY = 14 + AF_KEY = 15 + AF_NETLINK = 16 + AF_PACKET = 17 + AF_ASH = 18 + AF_ECONET = 19 + AF_ATMSVC = 20 + AF_RDS = 21 + AF_SNA = 22 + AF_IRDA = 23 + AF_PPPOX = 24 + AF_WANPIPE = 25 + AF_LLC = 26 + AF_IB = 27 + AF_MPLS = 28 + AF_CAN = 29 + AF_TIPC = 30 + AF_BLUETOOTH = 31 + AF_IUCV = 32 + AF_RXRPC = 33 + AF_ISDN = 34 + AF_PHONET = 35 + AF_IEEE802154 = 36 + AF_CAIF = 37 + AF_ALG = 38 + AF_NFC = 39 + AF_VSOCK = 40 +) + +// sendmsg(2)/recvmsg(2) flags, from linux/socket.h. +const ( + MSG_OOB = 0x1 + MSG_PEEK = 0x2 + MSG_DONTROUTE = 0x4 + MSG_TRYHARD = 0x4 + MSG_CTRUNC = 0x8 + MSG_PROBE = 0x10 + MSG_TRUNC = 0x20 + MSG_DONTWAIT = 0x40 + MSG_EOR = 0x80 + MSG_WAITALL = 0x100 + MSG_FIN = 0x200 + MSG_EOF = MSG_FIN + MSG_SYN = 0x400 + MSG_CONFIRM = 0x800 + MSG_RST = 0x1000 + MSG_ERRQUEUE = 0x2000 + MSG_NOSIGNAL = 0x4000 + MSG_MORE = 0x8000 + MSG_WAITFORONE = 0x10000 + MSG_SENDPAGE_NOTLAST = 0x20000 + MSG_REINJECT = 0x8000000 + MSG_ZEROCOPY = 0x4000000 + MSG_FASTOPEN = 0x20000000 + MSG_CMSG_CLOEXEC = 0x40000000 +) + +// SOL_SOCKET is from socket.h +const SOL_SOCKET = 1 + +// Socket types, from linux/net.h. +const ( + SOCK_STREAM = 1 + SOCK_DGRAM = 2 + SOCK_RAW = 3 + SOCK_RDM = 4 + SOCK_SEQPACKET = 5 + SOCK_DCCP = 6 + SOCK_PACKET = 10 +) + +// SOCK_TYPE_MASK covers all of the above socket types. The remaining bits are +// flags. From linux/net.h. +const SOCK_TYPE_MASK = 0xf + +// socket(2)/socketpair(2)/accept4(2) flags, from linux/net.h. +const ( + SOCK_CLOEXEC = O_CLOEXEC + SOCK_NONBLOCK = O_NONBLOCK +) + +// shutdown(2) how commands, from <linux/net.h>. +const ( + SHUT_RD = 0 + SHUT_WR = 1 + SHUT_RDWR = 2 +) + +// Socket options from socket.h. +const ( + SO_ERROR = 4 + SO_KEEPALIVE = 9 + SO_LINGER = 13 + SO_MARK = 36 + SO_PASSCRED = 16 + SO_PEERCRED = 17 + SO_PEERNAME = 28 + SO_PROTOCOL = 38 + SO_RCVBUF = 8 + SO_RCVTIMEO = 20 + SO_REUSEADDR = 2 + SO_SNDBUF = 7 + SO_SNDTIMEO = 21 + SO_TIMESTAMP = 29 + SO_TIMESTAMPNS = 35 + SO_TYPE = 3 +) + +// SockAddrInt is struct sockaddr_in, from uapi/linux/in.h. +type SockAddrInet struct { + Family uint16 + Port uint16 + Addr [4]byte + Zero [8]uint8 // pad to sizeof(struct sockaddr). +} + +// SockAddrInt6 is struct sockaddr_in6, from uapi/linux/in6.h. +type SockAddrInet6 struct { + Family uint16 + Port uint16 + Flowinfo uint32 + Addr [16]byte + Scope_id uint32 +} + +// UnixPathMax is the maximum length of the path in an AF_UNIX socket. +// +// From uapi/linux/un.h. +const UnixPathMax = 108 + +// SockAddrUnix is struct sockaddr_un, from uapi/linux/un.h. +type SockAddrUnix struct { + Family uint16 + Path [UnixPathMax]int8 +} + +// TCPInfo is a collection of TCP statistics. +// +// From uapi/linux/tcp.h. +type TCPInfo struct { + State uint8 + CaState uint8 + Retransmits uint8 + Probes uint8 + Backoff uint8 + Options uint8 + // WindowScale is the combination of snd_wscale (first 4 bits) and rcv_wscale (second 4 bits) + WindowScale uint8 + // DeliveryRateAppLimited is a boolean and only the first bit is meaningful. + DeliveryRateAppLimited uint8 + + RTO uint32 + ATO uint32 + SndMss uint32 + RcvMss uint32 + + Unacked uint32 + Sacked uint32 + Lost uint32 + Retrans uint32 + Fackets uint32 + + // Times. + LastDataSent uint32 + LastAckSent uint32 + LastDataRecv uint32 + LastAckRecv uint32 + + // Metrics. + PMTU uint32 + RcvSsthresh uint32 + RTT uint32 + RTTVar uint32 + SndSsthresh uint32 + SndCwnd uint32 + Advmss uint32 + Reordering uint32 + + RcvRTT uint32 + RcvSpace uint32 + + TotalRetrans uint32 + + PacingRate uint64 + MaxPacingRate uint64 + // BytesAcked is RFC4898 tcpEStatsAppHCThruOctetsAcked. + BytesAcked uint64 + // BytesReceived is RFC4898 tcpEStatsAppHCThruOctetsReceived. + BytesReceived uint64 + // SegsOut is RFC4898 tcpEStatsPerfSegsOut. + SegsOut uint32 + // SegsIn is RFC4898 tcpEStatsPerfSegsIn. + SegsIn uint32 + + NotSentBytes uint32 + MinRTT uint32 + // DataSegsIn is RFC4898 tcpEStatsDataSegsIn. + DataSegsIn uint32 + // DataSegsOut is RFC4898 tcpEStatsDataSegsOut. + DataSegsOut uint32 + + DeliveryRate uint64 + + // BusyTime is the time in microseconds busy sending data. + BusyTime uint64 + // RwndLimited is the time in microseconds limited by receive window. + RwndLimited uint64 + // SndBufLimited is the time in microseconds limited by send buffer. + SndBufLimited uint64 +} + +// SizeOfTCPInfo is the binary size of a TCPInfo struct (104 bytes). +var SizeOfTCPInfo = binary.Size(TCPInfo{}) + +// Control message types, from linux/socket.h. +const ( + SCM_CREDENTIALS = 0x2 + SCM_RIGHTS = 0x1 +) + +// A ControlMessageHeader is the header for a socket control message. +// +// ControlMessageHeader represents struct cmsghdr from linux/socket.h. +type ControlMessageHeader struct { + Length uint64 + Level int32 + Type int32 +} + +// SizeOfControlMessageHeader is the binary size of a ControlMessageHeader +// struct. +var SizeOfControlMessageHeader = int(binary.Size(ControlMessageHeader{})) + +// A ControlMessageCredentials is an SCM_CREDENTIALS socket control message. +// +// ControlMessageCredentials represents struct ucred from linux/socket.h. +type ControlMessageCredentials struct { + PID int32 + UID uint32 + GID uint32 +} + +// SizeOfControlMessageCredentials is the binary size of a +// ControlMessageCredentials struct. +var SizeOfControlMessageCredentials = int(binary.Size(ControlMessageCredentials{})) + +// A ControlMessageRights is an SCM_RIGHTS socket control message. +type ControlMessageRights []int32 + +// SizeOfControlMessageRight is the size of a single element in +// ControlMessageRights. +const SizeOfControlMessageRight = 4 + +// SCM_MAX_FD is the maximum number of FDs accepted in a single sendmsg call. +// From net/scm.h. +const SCM_MAX_FD = 253 |