diff options
Diffstat (limited to 'pkg/abi')
| -rw-r--r-- | pkg/abi/linux/elf.go | 14 | ||||
| -rw-r--r-- | pkg/abi/linux/file.go | 2 | ||||
| -rw-r--r-- | pkg/abi/linux/netlink.go | 6 | ||||
| -rw-r--r-- | pkg/abi/linux/netlink_route.go | 136 | ||||
| -rw-r--r-- | pkg/abi/linux/socket.go | 21 |
5 files changed, 177 insertions, 2 deletions
diff --git a/pkg/abi/linux/elf.go b/pkg/abi/linux/elf.go index fb1c679d2..40f0459a0 100644 --- a/pkg/abi/linux/elf.go +++ b/pkg/abi/linux/elf.go @@ -89,3 +89,17 @@ const ( // AT_SYSINFO_EHDR is the address of the VDSO. AT_SYSINFO_EHDR = 33 ) + +// ELF ET_CORE and ptrace GETREGSET/SETREGSET register set types. +// +// See include/uapi/linux/elf.h. +const ( + // NT_PRSTATUS is for general purpose register. + NT_PRSTATUS = 0x1 + + // NT_PRFPREG is for float point register. + NT_PRFPREG = 0x2 + + // NT_X86_XSTATE is for x86 extended state using xsave. + NT_X86_XSTATE = 0x202 +) diff --git a/pkg/abi/linux/file.go b/pkg/abi/linux/file.go index 615e72646..7d742871a 100644 --- a/pkg/abi/linux/file.go +++ b/pkg/abi/linux/file.go @@ -178,6 +178,8 @@ const ( // Values for preadv2/pwritev2. const ( + // Note: gVisor does not implement the RWF_HIPRI feature, but the flag is + // accepted as a valid flag argument for preadv2/pwritev2. RWF_HIPRI = 0x00000001 RWF_DSYNC = 0x00000002 RWF_SYNC = 0x00000004 diff --git a/pkg/abi/linux/netlink.go b/pkg/abi/linux/netlink.go index e8b6544b4..0ba086c76 100644 --- a/pkg/abi/linux/netlink.go +++ b/pkg/abi/linux/netlink.go @@ -122,3 +122,9 @@ const ( NETLINK_EXT_ACK = 11 NETLINK_DUMP_STRICT_CHK = 12 ) + +// NetlinkErrorMessage is struct nlmsgerr, from uapi/linux/netlink.h. +type NetlinkErrorMessage struct { + Error int32 + Header NetlinkMessageHeader +} diff --git a/pkg/abi/linux/netlink_route.go b/pkg/abi/linux/netlink_route.go index dd698e2bc..152f6b144 100644 --- a/pkg/abi/linux/netlink_route.go +++ b/pkg/abi/linux/netlink_route.go @@ -189,3 +189,139 @@ const ( const ( ARPHRD_LOOPBACK = 772 ) + +// RouteMessage struct rtmsg, from uapi/linux/rtnetlink.h. +type RouteMessage struct { + Family uint8 + DstLen uint8 + SrcLen uint8 + TOS uint8 + + Table uint8 + Protocol uint8 + Scope uint8 + Type uint8 + + Flags uint32 +} + +// Route types, from uapi/linux/rtnetlink.h. +const ( + // RTN_UNSPEC represents an unspecified route type. + RTN_UNSPEC = 0 + + // RTN_UNICAST represents a unicast route. + RTN_UNICAST = 1 + + // RTN_LOCAL represents a route that is accepted locally. + RTN_LOCAL = 2 + + // RTN_BROADCAST represents a broadcast route (Traffic is accepted locally + // as broadcast, and sent as broadcast). + RTN_BROADCAST = 3 + + // RTN_ANYCAST represents a anycast route (Traffic is accepted locally as + // broadcast but sent as unicast). + RTN_ANYCAST = 6 + + // RTN_MULTICAST represents a multicast route. + RTN_MULTICAST = 5 + + // RTN_BLACKHOLE represents a route where all traffic is dropped. + RTN_BLACKHOLE = 6 + + // RTN_UNREACHABLE represents a route where the destination is unreachable. + RTN_UNREACHABLE = 7 + + RTN_PROHIBIT = 8 + RTN_THROW = 9 + RTN_NAT = 10 + RTN_XRESOLVE = 11 +) + +// Route protocols/origins, from uapi/linux/rtnetlink.h. +const ( + RTPROT_UNSPEC = 0 + RTPROT_REDIRECT = 1 + RTPROT_KERNEL = 2 + RTPROT_BOOT = 3 + RTPROT_STATIC = 4 + RTPROT_GATED = 8 + RTPROT_RA = 9 + RTPROT_MRT = 10 + RTPROT_ZEBRA = 11 + RTPROT_BIRD = 12 + RTPROT_DNROUTED = 13 + RTPROT_XORP = 14 + RTPROT_NTK = 15 + RTPROT_DHCP = 16 + RTPROT_MROUTED = 17 + RTPROT_BABEL = 42 + RTPROT_BGP = 186 + RTPROT_ISIS = 187 + RTPROT_OSPF = 188 + RTPROT_RIP = 189 + RTPROT_EIGRP = 192 +) + +// Route scopes, from uapi/linux/rtnetlink.h. +const ( + RT_SCOPE_UNIVERSE = 0 + RT_SCOPE_SITE = 200 + RT_SCOPE_LINK = 253 + RT_SCOPE_HOST = 254 + RT_SCOPE_NOWHERE = 255 +) + +// Route flags, from uapi/linux/rtnetlink.h. +const ( + RTM_F_NOTIFY = 0x100 + RTM_F_CLONED = 0x200 + RTM_F_EQUALIZE = 0x400 + RTM_F_PREFIX = 0x800 + RTM_F_LOOKUP_TABLE = 0x1000 + RTM_F_FIB_MATCH = 0x2000 +) + +// Route tables, from uapi/linux/rtnetlink.h. +const ( + RT_TABLE_UNSPEC = 0 + RT_TABLE_COMPAT = 252 + RT_TABLE_DEFAULT = 253 + RT_TABLE_MAIN = 254 + RT_TABLE_LOCAL = 255 +) + +// Route attributes, from uapi/linux/rtnetlink.h. +const ( + RTA_UNSPEC = 0 + RTA_DST = 1 + RTA_SRC = 2 + RTA_IIF = 3 + RTA_OIF = 4 + RTA_GATEWAY = 5 + RTA_PRIORITY = 6 + RTA_PREFSRC = 7 + RTA_METRICS = 8 + RTA_MULTIPATH = 9 + RTA_PROTOINFO = 10 + RTA_FLOW = 11 + RTA_CACHEINFO = 12 + RTA_SESSION = 13 + RTA_MP_ALGO = 14 + RTA_TABLE = 15 + RTA_MARK = 16 + RTA_MFC_STATS = 17 + RTA_VIA = 18 + RTA_NEWDST = 19 + RTA_PREF = 20 + RTA_ENCAP_TYPE = 21 + RTA_ENCAP = 22 + RTA_EXPIRES = 23 + RTA_PAD = 24 + RTA_UID = 25 + RTA_TTL_PROPAGATE = 26 + RTA_IP_PROTO = 27 + RTA_SPORT = 28 + RTA_DPORT = 29 +) diff --git a/pkg/abi/linux/socket.go b/pkg/abi/linux/socket.go index 6d22002c4..d5b731390 100644 --- a/pkg/abi/linux/socket.go +++ b/pkg/abi/linux/socket.go @@ -267,6 +267,20 @@ type SockAddrUnix struct { Path [UnixPathMax]int8 } +// SockAddr represents a union of valid socket address types. This is logically +// equivalent to struct sockaddr. SockAddr ensures that a well-defined set of +// types can be used as socket addresses. +type SockAddr interface { + // implementsSockAddr exists purely to allow a type to indicate that they + // implement this interface. This method is a no-op and shouldn't be called. + implementsSockAddr() +} + +func (s *SockAddrInet) implementsSockAddr() {} +func (s *SockAddrInet6) implementsSockAddr() {} +func (s *SockAddrUnix) implementsSockAddr() {} +func (s *SockAddrNetlink) implementsSockAddr() {} + // Linger is struct linger, from include/linux/socket.h. type Linger struct { OnOff int32 @@ -278,7 +292,10 @@ const SizeOfLinger = 8 // TCPInfo is a collection of TCP statistics. // -// From uapi/linux/tcp.h. +// From uapi/linux/tcp.h. Newer versions of Linux continue to add new fields to +// the end of this struct or within existing unusued space, so its size grows +// over time. The current iteration is based on linux v4.17. New versions are +// always backwards compatible. type TCPInfo struct { State uint8 CaState uint8 @@ -352,7 +369,7 @@ type TCPInfo struct { } // SizeOfTCPInfo is the binary size of a TCPInfo struct. -const SizeOfTCPInfo = 104 +var SizeOfTCPInfo = int(binary.Size(TCPInfo{})) // Control message types, from linux/socket.h. const ( |