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syscall: add routing messages support for BSD variants

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R=rsc
CC=golang-dev
https://golang.org/cl/4539084
This commit is contained in:
Mikio Hara 2011-05-26 20:02:03 -04:00 committed by Russ Cox
parent 86327cdcf5
commit 12376c93ef
8 changed files with 2761 additions and 2036 deletions
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2
src/pkg/syscall/Makefile
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@ -18,11 +18,13 @@ GOFILES=\
GOFILES_freebsd=\
exec_unix.go\
route_bsd.go\
syscall_bsd.go\
syscall_unix.go\
GOFILES_darwin=\
exec_unix.go\
route_bsd.go\
syscall_bsd.go\
syscall_unix.go\

4
src/pkg/syscall/mkerrors.sh
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@ -54,6 +54,7 @@ includes_Darwin='
#include <sys/wait.h>
#include <net/bpf.h>
#include <net/if.h>
#include <net/if_types.h>
#include <net/route.h>
#include <netinet/in.h>
#include <netinet/ip.h>
@ -69,6 +70,7 @@ includes_FreeBSD='
#include <sys/wait.h>
#include <net/bpf.h>
#include <net/if.h>
#include <net/if_types.h>
#include <net/route.h>
#include <netinet/in.h>
#include <netinet/ip.h>
@ -140,7 +142,7 @@ done
$2 !~ "NLA_TYPE_MASK" &&
$2 ~ /^(NETLINK|NLM|NLMSG|NLA|IFA|RTM|RTN|RTPROT|RTA|RTAX|RTNH|ARPHRD)_/ ||
$2 ~ /^SIOC/ ||
$2 ~ /^(IFF|NET_RT|RTM|RTF|RTV|RTA|RTAX)_/ ||
$2 ~ /^(IFF|IFT|NET_RT|RTM|RTF|RTV|RTA|RTAX)_/ ||
$2 ~ /^BIOC/ ||
$2 !~ /^(BPF_TIMEVAL)$/ &&
$2 ~ /^(BPF|DLT)_/ ||

180
src/pkg/syscall/route_bsd.go Normal file
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@ -0,0 +1,180 @@
// Copyright 2011 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Routing sockets and messages
package syscall
import (
"unsafe"
)
const darwinAMD64 = OS == "darwin" && ARCH == "amd64"
// Round the length of a raw sockaddr up to align it propery.
func rsaAlignOf(salen int) int {
salign := sizeofPtr
// NOTE: It seems like 64-bit Darwin kernel still requires 32-bit
// aligned access to BSD subsystem.
if darwinAMD64 {
salign = 4
}
if salen == 0 {
return salign
}
return (salen + salign - 1) & ^(salign - 1)
}
// RouteRIB returns routing information base, as known as RIB,
// which consists of network facility information, states and
// parameters.
func RouteRIB(facility, param int) ([]byte, int) {
var (
tab []byte
e int
)
mib := []_C_int{CTL_NET, AF_ROUTE, 0, 0, _C_int(facility), _C_int(param)}
// Find size.
n := uintptr(0)
if e = sysctl(mib, nil, &n, nil, 0); e != 0 {
return nil, e
}
if n == 0 {
return nil, 0
}
tab = make([]byte, n)
if e = sysctl(mib, &tab[0], &n, nil, 0); e != 0 {
return nil, e
}
return tab[:n], 0
}
// RoutingMessage represents a routing message.
type RoutingMessage interface {
sockaddr() []Sockaddr
}
const anyMessageLen = unsafe.Sizeof(anyMessage{})
type anyMessage struct {
Msglen uint16
Version uint8
Type uint8
}
func (any *anyMessage) toRoutingMessage(buf []byte) RoutingMessage {
switch any.Type {
case RTM_ADD, RTM_DELETE, RTM_CHANGE, RTM_GET, RTM_LOSING, RTM_REDIRECT, RTM_MISS, RTM_LOCK, RTM_RESOLVE:
p := (*RouteMessage)(unsafe.Pointer(any))
rtm := &RouteMessage{}
rtm.Header = p.Header
rtm.Data = buf[SizeofRtMsghdr:any.Msglen]
return rtm
case RTM_IFINFO:
p := (*InterfaceMessage)(unsafe.Pointer(any))
ifm := &InterfaceMessage{}
ifm.Header = p.Header
ifm.Data = buf[SizeofIfMsghdr:any.Msglen]
return ifm
case RTM_NEWADDR, RTM_DELADDR:
p := (*InterfaceAddrMessage)(unsafe.Pointer(any))
ifam := &InterfaceAddrMessage{}
ifam.Header = p.Header
ifam.Data = buf[SizeofIfaMsghdr:any.Msglen]
return ifam
case RTM_NEWMADDR, RTM_DELMADDR:
// TODO: implement this in the near future
}
return nil
}
// RouteMessage represents a routing message containing routing
// entries.
type RouteMessage struct {
Header RtMsghdr
Data []byte
}
func (m *RouteMessage) sockaddr() (sas []Sockaddr) {
// TODO: implement this in the near future
return nil
}
// InterfaceMessage represents a routing message containing
// network interface entries.
type InterfaceMessage struct {
Header IfMsghdr
Data []byte
}
func (m *InterfaceMessage) sockaddr() (sas []Sockaddr) {
if m.Header.Addrs&RTA_IFP == 0 {
return nil
}
sa, e := anyToSockaddr((*RawSockaddrAny)(unsafe.Pointer(&m.Data[0])))
if e != 0 {
return nil
}
return append(sas, sa)
}
// InterfaceAddrMessage represents a routing message containing
// network interface address entries.
type InterfaceAddrMessage struct {
Header IfaMsghdr
Data []byte
}
const rtaMask = RTA_IFA | RTA_NETMASK | RTA_BRD
func (m *InterfaceAddrMessage) sockaddr() (sas []Sockaddr) {
if m.Header.Addrs&rtaMask == 0 {
return nil
}
buf := m.Data[:]
for i := uint(0); i < RTAX_MAX; i++ {
if m.Header.Addrs&rtaMask&(1<<i) == 0 {
continue
}
rsa := (*RawSockaddr)(unsafe.Pointer(&buf[0]))
switch i {
case RTAX_IFA:
sa, e := anyToSockaddr((*RawSockaddrAny)(unsafe.Pointer(rsa)))
if e != 0 {
return nil
}
sas = append(sas, sa)
case RTAX_NETMASK, RTAX_BRD:
// nothing to do
}
buf = buf[rsaAlignOf(int(rsa.Len)):]
}
return sas
}
// ParseRoutingMessage parses buf as routing messages and returns
// the slice containing the RoutingMessage interfaces.
func ParseRoutingMessage(buf []byte) (msgs []RoutingMessage, errno int) {
for len(buf) >= anyMessageLen {
any := (*anyMessage)(unsafe.Pointer(&buf[0]))
if any.Version != RTM_VERSION {
return nil, EINVAL
}
msgs = append(msgs, any.toRoutingMessage(buf))
buf = buf[any.Msglen:]
}
return msgs, 0
}
// ParseRoutingMessage parses msg's payload as raw sockaddrs and
// returns the slice containing the Sockaddr interfaces.
func ParseRoutingSockaddr(msg RoutingMessage) (sas []Sockaddr, errno int) {
return append(sas, msg.sockaddr()...), 0
}

21
src/pkg/syscall/syscall_bsd.go
View File

@ -519,27 +519,6 @@ func SysctlUint32(name string) (value uint32, errno int) {
return *(*uint32)(unsafe.Pointer(&buf[0])), 0
}
func SysctlNetRoute(fourth, fifth, sixth int) (value []byte, errno int) {
mib := []_C_int{CTL_NET, AF_ROUTE, 0, _C_int(fourth), _C_int(fifth), _C_int(sixth)}
// Find size.
n := uintptr(0)
if errno = sysctl(mib, nil, &n, nil, 0); errno != 0 {
return nil, errno
}
if n == 0 {
return nil, 0
}
// Read into buffer of that size.
b := make([]byte, n)
if errno = sysctl(mib, &b[0], &n, nil, 0); errno != 0 {
return nil, errno
}
return b[0:n], 0
}
//sys utimes(path string, timeval *[2]Timeval) (errno int)
func Utimes(path string, tv []Timeval) (errno int) {
if len(tv) != 2 {

66
src/pkg/syscall/zerrors_darwin_386.go
View File

@ -339,6 +339,72 @@ const (
IFF_SIMPLEX = 0x800
IFF_UP = 0x1
IFNAMSIZ = 0x10
IFT_1822 = 0x2
IFT_AAL5 = 0x31
IFT_ARCNET = 0x23
IFT_ARCNETPLUS = 0x24
IFT_ATM = 0x25
IFT_BRIDGE = 0xd1
IFT_CARP = 0xf8
IFT_CEPT = 0x13
IFT_DS3 = 0x1e
IFT_ENC = 0xf4
IFT_EON = 0x19
IFT_ETHER = 0x6
IFT_FAITH = 0x38
IFT_FDDI = 0xf
IFT_FRELAY = 0x20
IFT_FRELAYDCE = 0x2c
IFT_GIF = 0x37
IFT_HDH1822 = 0x3
IFT_HIPPI = 0x2f
IFT_HSSI = 0x2e
IFT_HY = 0xe
IFT_IEEE1394 = 0x90
IFT_IEEE8023ADLAG = 0x88
IFT_ISDNBASIC = 0x14
IFT_ISDNPRIMARY = 0x15
IFT_ISO88022LLC = 0x29
IFT_ISO88023 = 0x7
IFT_ISO88024 = 0x8
IFT_ISO88025 = 0x9
IFT_ISO88026 = 0xa
IFT_L2VLAN = 0x87
IFT_LAPB = 0x10
IFT_LOCALTALK = 0x2a
IFT_LOOP = 0x18
IFT_MIOX25 = 0x26
IFT_MODEM = 0x30
IFT_NSIP = 0x1b
IFT_OTHER = 0x1
IFT_P10 = 0xc
IFT_P80 = 0xd
IFT_PARA = 0x22
IFT_PDP = 0xff
IFT_PFLOG = 0xf5
IFT_PFSYNC = 0xf6
IFT_PPP = 0x17
IFT_PROPMUX = 0x36
IFT_PROPVIRTUAL = 0x35
IFT_PTPSERIAL = 0x16
IFT_RS232 = 0x21
IFT_SDLC = 0x11
IFT_SIP = 0x1f
IFT_SLIP = 0x1c
IFT_SMDSDXI = 0x2b
IFT_SMDSICIP = 0x34
IFT_SONET = 0x27
IFT_SONETPATH = 0x32
IFT_SONETVT = 0x33
IFT_STARLAN = 0xb
IFT_STF = 0x39
IFT_T1 = 0x12
IFT_ULTRA = 0x1d
IFT_V35 = 0x2d
IFT_X25 = 0x5
IFT_X25DDN = 0x4
IFT_X25PLE = 0x28
IFT_XETHER = 0x1a
IN_CLASSA_HOST = 0xffffff
IN_CLASSA_MAX = 0x80
IN_CLASSA_NET = 0xff000000

66
src/pkg/syscall/zerrors_darwin_amd64.go
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@ -339,6 +339,72 @@ const (
IFF_SIMPLEX = 0x800
IFF_UP = 0x1
IFNAMSIZ = 0x10
IFT_1822 = 0x2
IFT_AAL5 = 0x31
IFT_ARCNET = 0x23
IFT_ARCNETPLUS = 0x24
IFT_ATM = 0x25
IFT_BRIDGE = 0xd1
IFT_CARP = 0xf8
IFT_CEPT = 0x13
IFT_DS3 = 0x1e
IFT_ENC = 0xf4
IFT_EON = 0x19
IFT_ETHER = 0x6
IFT_FAITH = 0x38
IFT_FDDI = 0xf
IFT_FRELAY = 0x20
IFT_FRELAYDCE = 0x2c
IFT_GIF = 0x37
IFT_HDH1822 = 0x3
IFT_HIPPI = 0x2f
IFT_HSSI = 0x2e
IFT_HY = 0xe
IFT_IEEE1394 = 0x90
IFT_IEEE8023ADLAG = 0x88
IFT_ISDNBASIC = 0x14
IFT_ISDNPRIMARY = 0x15
IFT_ISO88022LLC = 0x29
IFT_ISO88023 = 0x7
IFT_ISO88024 = 0x8
IFT_ISO88025 = 0x9
IFT_ISO88026 = 0xa
IFT_L2VLAN = 0x87
IFT_LAPB = 0x10
IFT_LOCALTALK = 0x2a
IFT_LOOP = 0x18
IFT_MIOX25 = 0x26
IFT_MODEM = 0x30
IFT_NSIP = 0x1b
IFT_OTHER = 0x1
IFT_P10 = 0xc
IFT_P80 = 0xd
IFT_PARA = 0x22
IFT_PDP = 0xff
IFT_PFLOG = 0xf5
IFT_PFSYNC = 0xf6
IFT_PPP = 0x17
IFT_PROPMUX = 0x36
IFT_PROPVIRTUAL = 0x35
IFT_PTPSERIAL = 0x16
IFT_RS232 = 0x21
IFT_SDLC = 0x11
IFT_SIP = 0x1f
IFT_SLIP = 0x1c
IFT_SMDSDXI = 0x2b
IFT_SMDSICIP = 0x34
IFT_SONET = 0x27
IFT_SONETPATH = 0x32
IFT_SONETVT = 0x33
IFT_STARLAN = 0xb
IFT_STF = 0x39
IFT_T1 = 0x12
IFT_ULTRA = 0x1d
IFT_V35 = 0x2d
IFT_X25 = 0x5
IFT_X25DDN = 0x4
IFT_X25PLE = 0x28
IFT_XETHER = 0x1a
IN_CLASSA_HOST = 0xffffff
IN_CLASSA_MAX = 0x80
IN_CLASSA_NET = 0xff000000

2229
src/pkg/syscall/zerrors_freebsd_386.go
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File diff suppressed because it is too large Load Diff

2229
src/pkg/syscall/zerrors_freebsd_amd64.go
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File diff suppressed because it is too large Load Diff