implements af_packet socket

This commit is contained in:
Urban Ishimwe
2020-08-23 22:42:18 +02:00
parent fdc8b094f0
commit a03eb92c1e
357 changed files with 175487 additions and 179 deletions
+97 -41
View File
@@ -6,6 +6,7 @@ import (
"fmt"
"net"
"os"
"runtime"
"sync"
"time"
@@ -21,13 +22,13 @@ type Handler func(gopacket.Packet)
// PcapOptions options that can be set on a pcap capture handle,
// these options take effect on inactive pcap handles
type PcapOptions struct {
BufferTimeout time.Duration `json:"input-raw-buffer-timeout"`
TimestampType string `json:"input-raw-timestamp-type"`
BPFFilter string `json:"input-raw-bpf-filter"`
BufferSize size.Size `json:"input-raw-buffer-size"`
Promiscuous bool `json:"input-raw-promisc"`
Monitor bool `json:"input-raw-monitor"`
Snaplen bool `json:"input-raw-override-snaplen"`
BufferTimeout time.Duration `json:"input-raw-buffer-timeout"`
TimestampType string `json:"input-raw-timestamp-type"`
BufferSize size.Size `json:"input-raw-buffer-size"`
BPFFilter string `json:"input-raw-bpf-filter"`
}
// NetInterface represents network interface
@@ -39,18 +40,18 @@ type NetInterface struct {
// Listener handle traffic capture, this is its representation.
type Listener struct {
sync.Mutex
PcapOptions
Engine EngineType
Transport string // transport layer default to tcp
Activate func() error // function is used to activate the engine. it must be called before reading packets
Handles map[string]*pcap.Handle
Handles map[string]gopacket.PacketDataSource
Interfaces []NetInterface
Reading chan bool // this channel is closed when the listener has started reading packets
host string // pcap file name or interface (name, hardware addr, index or ip address)
PcapOptions
Engine EngineType
port uint16 // src or/and dst port
trackResponse bool
host string // pcap file name or interface (name, hardware addr, index or ip address)
quit chan bool
packets chan gopacket.Packet
}
@@ -60,8 +61,9 @@ type EngineType uint8
// Available engines for intercepting traffic
const (
EnginePcap EngineType = iota
EnginePcap EngineType = 1 << iota
EnginePcapFile
EngineRawSocket
)
// Set is here so that EngineType can implement flag.Var
@@ -71,6 +73,8 @@ func (eng *EngineType) Set(v string) error {
*eng = EnginePcap
case "pcap_file":
*eng = EnginePcapFile
case "sock_raw", "af_packet":
*eng = EngineRawSocket
default:
return fmt.Errorf("invalid engine %s", v)
}
@@ -83,6 +87,8 @@ func (eng *EngineType) String() (e string) {
e = "pcap_file"
case EnginePcap:
e = "libpcap"
case EngineRawSocket:
e = "sock_raw"
default:
e = ""
}
@@ -101,16 +107,21 @@ func NewListener(host string, port uint16, transport string, engine EngineType,
if transport != "" {
l.Transport = transport
}
l.Handles = make(map[string]*pcap.Handle)
l.Handles = make(map[string]gopacket.PacketDataSource)
l.trackResponse = trackResponse
l.packets = make(chan gopacket.Packet, 1000)
l.quit = make(chan bool, 1)
l.Reading = make(chan bool, 1)
l.Activate = l.activatePcap
l.Engine = EnginePcap
if engine == EnginePcapFile {
l.Activate = l.activatePcapFile
switch engine {
default:
l.Engine = EnginePcap
l.Activate = l.activatePcap
case EngineRawSocket:
l.Engine = EngineRawSocket
l.Activate = l.activateRawSocket
case EnginePcapFile:
l.Engine = EnginePcapFile
l.Activate = l.activatePcapFile
return
}
err = l.setInterfaces()
@@ -130,9 +141,6 @@ func (l *Listener) SetPcapOptions(opts PcapOptions) {
// until the context done signal is sent or EOF on handles.
// this function should be called after activating pcap handles
func (l *Listener) Listen(ctx context.Context, handler Handler) (err error) {
if err != nil {
return err
}
l.read()
done := ctx.Done()
var p gopacket.Packet
@@ -143,7 +151,7 @@ func (l *Listener) Listen(ctx context.Context, handler Handler) (err error) {
l.quit <- true
close(l.quit)
err = ctx.Err()
return
done = nil
case p, ok = <-l.packets:
if !ok {
return
@@ -182,7 +190,7 @@ func (l *Listener) Filter(ifi NetInterface) (filter string) {
dir = " "
}
filter = fmt.Sprintf("(%s%s%s)", l.Transport, dir, port)
if l.host == "" || isDevice(l.host, ifi) {
if listenAll(l.host) || isDevice(l.host, ifi) {
return
}
filter = fmt.Sprintf("(%s%s%s and host %s)", l.Transport, dir, port, l.host)
@@ -254,7 +262,7 @@ func (l *Listener) PcapHandle(ifi NetInterface) (handle *pcap.Handle, err error)
return nil, fmt.Errorf("handle buffer size error: %q, interface: %q", err, ifi.Name)
}
}
if l.BufferTimeout.Nanoseconds() == 0 {
if l.BufferTimeout == 0 {
l.BufferTimeout = pcap.BlockForever
}
err = inactive.SetTimeout(l.BufferTimeout)
@@ -266,11 +274,8 @@ func (l *Listener) PcapHandle(ifi NetInterface) (handle *pcap.Handle, err error)
return nil, fmt.Errorf("PCAP Activate device error: %q, interface: %q", err, ifi.Name)
}
if l.BPFFilter != "" {
if l.BPFFilter[0] != '(' {
l.BPFFilter = "(" + l.BPFFilter
}
if l.BPFFilter[len(l.BPFFilter)-1] != ')' {
l.BPFFilter += ")"
if l.BPFFilter[0] != '(' || l.BPFFilter[len(l.BPFFilter)-1] != ')' {
l.BPFFilter = "(" + l.BPFFilter + ")"
}
} else {
l.BPFFilter = l.Filter(ifi)
@@ -283,15 +288,43 @@ func (l *Listener) PcapHandle(ifi NetInterface) (handle *pcap.Handle, err error)
return
}
// SocketHandle returns new unix ethernet handle associated with this listener settings
func (l *Listener) SocketHandle(ifi NetInterface) (handle *SockRaw, err error) {
handle, err = NewSockRaw(ifi.Interface)
if err != nil {
return nil, fmt.Errorf("sock raw error: %q, interface: %q", err, ifi.Name)
}
if err = handle.SetPromiscuous(l.Promiscuous || l.Monitor); err != nil {
return nil, fmt.Errorf("promiscuous mode error: %q, interface: %q", err, ifi.Name)
}
if l.BPFFilter != "" {
if l.BPFFilter[0] != '(' || l.BPFFilter[len(l.BPFFilter)-1] != ')' {
l.BPFFilter = "(" + l.BPFFilter + ")"
}
} else {
l.BPFFilter = l.Filter(ifi)
}
if err = handle.SetBPFFilter(l.BPFFilter); err != nil {
handle.Close()
return nil, fmt.Errorf("BPF filter error: %q%s, interface: %q", err, l.BPFFilter, ifi.Name)
}
return
}
func (l *Listener) read() {
l.Lock()
defer l.Unlock()
for key, handle := range l.Handles {
source := gopacket.NewPacketSource(handle, handle.LinkType())
var source *gopacket.PacketSource
linkType := layers.LinkTypeEthernet
if _, ok := handle.(*pcap.Handle); ok {
linkType = handle.(*pcap.Handle).LinkType()
}
source = gopacket.NewPacketSource(handle, linkType)
source.Lazy = true
source.NoCopy = true
ch := source.Packets()
go func(handle *pcap.Handle, key string) {
go func(key string) {
defer l.closeHandles(key)
for {
select {
@@ -304,7 +337,7 @@ func (l *Listener) read() {
l.packets <- p
}
}
}(handle, key)
}(key)
}
l.Reading <- true
close(l.Reading)
@@ -314,7 +347,9 @@ func (l *Listener) closeHandles(key string) {
l.Lock()
defer l.Unlock()
if handle, ok := l.Handles[key]; ok {
handle.Close()
if _, ok = handle.(interface{ Close() }); ok {
handle.(interface{ Close() }).Close()
}
delete(l.Handles, key)
if len(l.Handles) == 0 {
close(l.packets)
@@ -322,7 +357,7 @@ func (l *Listener) closeHandles(key string) {
}
}
func (l *Listener) activatePcap() (err error) {
func (l *Listener) activatePcap() error {
var e error
var msg string
for _, ifi := range l.Interfaces {
@@ -337,7 +372,25 @@ func (l *Listener) activatePcap() (err error) {
if len(l.Handles) == 0 {
return fmt.Errorf("pcap handles error:%s", msg)
}
return
return nil
}
func (l *Listener) activateRawSocket() error {
if runtime.GOOS != "linux" {
return fmt.Errorf("sock_raw is not stabilized on OS other than linux")
}
var msg string
var e error
for _, ifi := range l.Interfaces {
var handle *SockRaw
handle, e = l.SocketHandle(ifi)
if e != nil {
msg += ("\n" + e.Error())
continue
}
l.Handles[ifi.Name] = handle
}
return e
}
func (l *Listener) activatePcapFile() (err error) {
@@ -347,11 +400,8 @@ func (l *Listener) activatePcapFile() (err error) {
return fmt.Errorf("open pcap file error: %q", e)
}
if l.BPFFilter != "" {
if l.BPFFilter[0] != '(' {
l.BPFFilter = "(" + l.BPFFilter
}
if l.BPFFilter[len(l.BPFFilter)-1] != ')' {
l.BPFFilter += ")"
if l.BPFFilter[0] != '(' || l.BPFFilter[len(l.BPFFilter)-1] != ')' {
l.BPFFilter = "(" + l.BPFFilter + ")"
}
} else {
addr := l.host
@@ -396,15 +446,13 @@ func (l *Listener) setInterfaces() (err error) {
Ifis = append(Ifis, ifi)
}
switch l.host {
case "", "0.0.0.0", "[::]", "::":
if listenAll(l.host) {
l.Interfaces = Ifis
return
}
found := false
for _, ifi := range Ifis {
if l.host == ifi.Name || l.host == fmt.Sprintf("%d", ifi.Index) || l.host == ifi.HardwareAddr.String() {
if isDevice(l.host, ifi) {
found = true
}
for _, ip := range ifi.IPs {
@@ -435,3 +483,11 @@ func cutMask(addr net.Addr) string {
func isDevice(addr string, ifi NetInterface) bool {
return addr == ifi.Name || addr == fmt.Sprintf("%d", ifi.Index) || addr == ifi.HardwareAddr.String()
}
func listenAll(addr string) bool {
switch addr {
case "", "0.0.0.0", "[::]", "::":
return true
}
return false
}
+86
View File
@@ -193,6 +193,46 @@ func TestPcapHandler(t *testing.T) {
}
}
func TestSocketHandler(t *testing.T) {
l, err := NewListener(LoopBack.Name, 8000, "", EngineRawSocket, true)
if err != nil {
t.Errorf("expected error to be nil, got %v", err)
return
}
err = l.Activate()
if err != nil {
t.Errorf("expected error to be nil, got %v", err)
return
}
quit := make(chan bool, 1)
pckts := 0
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
errCh := l.ListenBackground(ctx, func(packet gopacket.Packet) {
pckts++
if pckts == 10 {
quit <- true
}
})
select {
case err = <-errCh:
t.Error(err)
case <-l.Reading:
}
if err != nil {
t.Errorf("expected error to be nil, got %v", err)
return
}
for i := 0; i < 5; i++ {
_, _ = net.Dial("tcp", "127.0.0.1:8000")
}
select {
case <-time.After(time.Second * 2):
t.Error("failed to parse packets in time")
case <-quit:
}
}
func BenchmarkPcapDump(b *testing.B) {
f, err := ioutil.TempFile("", "pcap_file")
if err != nil {
@@ -224,6 +264,7 @@ func BenchmarkPcapFile(b *testing.B) {
}
name := f.Name()
f.Close()
b.ResetTimer()
var l *Listener
l, err = NewListener(name, 8000, "", EnginePcapFile, true)
if err != nil {
@@ -288,3 +329,48 @@ func BenchmarkPcap(b *testing.B) {
}
b.Logf("%d/%d packets in %s", pckts, b.N*2, time.Since(now))
}
func BenchmarkRawSocket(b *testing.B) {
now := time.Now()
var err error
l, err := NewListener(LoopBack.Name, 8000, "", EngineRawSocket, true)
if err != nil {
b.Errorf("expected error to be nil, got %v", err)
return
}
err = l.Activate()
if err != nil {
b.Errorf("expected error to be nil, got %v", err)
return
}
sock := l.Handles[LoopBack.Name].(*SockRaw)
quit := make(chan bool, 1)
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
pckts := 0
errCh := l.ListenBackground(ctx, func(_ gopacket.Packet) {
pckts++
if pckts == b.N*2 {
quit <- true
}
})
select {
case err = <-errCh:
b.Error(err)
case <-l.Reading:
}
for i := 0; i < b.N; i++ {
buf := generateHeaders(1, 1<<10)
err = sock.WritePacketData(buf[:])
if err != nil {
b.Error(err)
}
}
select {
case <-time.After(time.Second):
case <-quit:
}
sts, _ := l.Handles[LoopBack.Name].(*SockRaw).Stats()
b.Logf("%d/%d packets in %s", sts.Packets-sts.Drops, sts.Packets, time.Since(now))
}
+239
View File
@@ -0,0 +1,239 @@
package capture
import (
"fmt"
"net"
"sync"
"time"
"unsafe"
"golang.org/x/sys/unix"
"github.com/google/gopacket"
"github.com/google/gopacket/layers"
"github.com/google/gopacket/pcap"
)
const (
// ETHALL htons(ETH_P_ALL)
ETHALL uint16 = unix.ETH_P_ALL<<8 | unix.ETH_P_ALL>>8
// PAGESIZE represents multiples of 4kb in powers of 2
PAGESIZE = 0x1000
// BLOCKSIZE ring buffer block_size
BLOCKSIZE = PAGESIZE * 36
// BLOCKNR ring buffer block_nr
BLOCKNR = 4
// FRAMESIZE ring buffer frame_size
FRAMESIZE = BLOCKSIZE / 2
// FRAMENR ring buffer frame_nr
FRAMENR = BLOCKNR * BLOCKSIZE / FRAMESIZE
)
var tpacket2hdrlen = tpAlign(int(unsafe.Sizeof(unix.Tpacket2Hdr{})))
// SockRaw is a linux M'maped af_packet socket
type SockRaw struct {
mu sync.Mutex
fd int
ifindex int
snaplen int
pollTimeout int
frame int
buf []byte // points to the memory space of the ring buffer shared with the kernel.
}
// NewSockRaw returns new M'maped sock_raw on packet version 2.
func NewSockRaw(ifi net.Interface) (*SockRaw, error) {
// sock create
fd, err := unix.Socket(unix.AF_PACKET, unix.SOCK_RAW, int(ETHALL))
if err != nil {
return nil, err
}
sock := &SockRaw{
fd: fd,
ifindex: ifi.Index,
snaplen: unix.IP_MAXPACKET,
pollTimeout: -1,
}
// set packet version
err = unix.SetsockoptInt(fd, unix.SOL_PACKET, unix.PACKET_VERSION, unix.TPACKET_V2)
if err != nil {
unix.Close(fd)
return nil, fmt.Errorf("setsockopt packet_version: %v", err)
}
// bind to interface
addr := unix.RawSockaddrLinklayer{
Family: unix.AF_PACKET,
Protocol: ETHALL,
Ifindex: int32(ifi.Index),
}
_, _, e := unix.Syscall(
unix.SYS_BIND,
uintptr(fd),
uintptr(unsafe.Pointer(&addr)),
uintptr(unix.SizeofSockaddrLinklayer),
)
if e != 0 {
unix.Close(fd)
return nil, e
}
// create shared-memory ring buffer
tp := &unix.TpacketReq{
Block_size: BLOCKSIZE,
Block_nr: BLOCKNR,
Frame_size: FRAMESIZE,
Frame_nr: FRAMENR,
}
err = unix.SetsockoptTpacketReq(sock.fd, unix.SOL_PACKET, unix.PACKET_RX_RING, tp)
if err != nil {
unix.Close(fd)
return nil, fmt.Errorf("setsockopt packet_rx_ring: %v", err)
}
sock.buf, err = unix.Mmap(
sock.fd,
0,
BLOCKSIZE*BLOCKNR,
unix.PROT_READ|unix.PROT_WRITE,
unix.MAP_SHARED|unix.MAP_LOCKED,
)
if err != nil {
unix.Close(fd)
return nil, fmt.Errorf("socket mmap error: %v", err)
}
return sock, nil
}
// ReadPacketData implements gopacket.PacketDataSource.
func (sock *SockRaw) ReadPacketData() (buf []byte, ci gopacket.CaptureInfo, err error) {
sock.mu.Lock()
defer sock.mu.Unlock()
var tpHdr *unix.Tpacket2Hdr
poll := &unix.PollFd{
Fd: int32(sock.fd),
Events: unix.POLLIN,
}
i := sock.frame * FRAMESIZE
tpHdr = (*unix.Tpacket2Hdr)(unsafe.Pointer(&sock.buf[i]))
for tpHdr.Status&unix.TP_STATUS_USER == 0 {
_, _, e := unix.Syscall(unix.SYS_POLL, uintptr(unsafe.Pointer(poll)), 1, uintptr(sock.pollTimeout))
if e != 0 && e != unix.EINTR {
return buf, ci, e
}
}
tpHdr.Status = unix.TP_STATUS_KERNEL
sockAddr := (*unix.RawSockaddrLinklayer)(unsafe.Pointer(&sock.buf[i+tpacket2hdrlen]))
ci.Length = int(tpHdr.Len)
ci.Timestamp = time.Unix(int64(tpHdr.Sec), int64(tpHdr.Nsec))
ci.InterfaceIndex = int(sockAddr.Ifindex)
buf = make([]byte, tpHdr.Snaplen)
ci.CaptureLength = copy(buf, sock.buf[i+int(tpHdr.Mac):])
sock.frame = (sock.frame + 1) % FRAMENR
return
}
// Close closes the underlying socket
func (sock *SockRaw) Close() (err error) {
sock.mu.Lock()
defer sock.mu.Unlock()
if sock.fd != -1 {
unix.Munmap(sock.buf)
sock.buf = nil
err = unix.Close(sock.fd)
sock.fd = -1
}
return
}
// SetSnapLen sets the maximum capture length to the given value.
// for this to take effects on the kernel level SetBPFilter should be called too.
func (sock *SockRaw) SetSnapLen(snap int) error {
sock.mu.Lock()
defer sock.mu.Unlock()
if snap < 0 {
return fmt.Errorf("expected %d snap length to be at least 0", snap)
}
if snap > unix.IP_MAXPACKET {
snap = unix.IP_MAXPACKET
}
sock.snaplen = snap
return nil
}
// SetTimeout sets poll wait timeout for the socket.
// negative value will block forever
func (sock *SockRaw) SetTimeout(t time.Duration) error {
sock.mu.Lock()
defer sock.mu.Unlock()
sock.pollTimeout = int(t)
return nil
}
// GetSnapLen returns the maximum capture length
func (sock *SockRaw) GetSnapLen() int {
sock.mu.Lock()
defer sock.mu.Unlock()
return sock.snaplen
}
// SetBPFFilter compiles and sets a BPF filter for the socket handle.
func (sock *SockRaw) SetBPFFilter(expr string) error {
sock.mu.Lock()
defer sock.mu.Unlock()
if len(expr) == 0 {
return unix.SetsockoptInt(sock.fd, unix.SOL_SOCKET, unix.SO_DETACH_FILTER, 0)
}
filter, err := pcap.CompileBPFFilter(layers.LinkTypeEthernet, sock.snaplen, expr)
if err != nil {
return err
}
if len(filter) > int(^uint16(0)) {
return fmt.Errorf("filters out of range 0-%d", ^uint16(0))
}
if len(filter) == 0 {
return unix.SetsockoptInt(sock.fd, unix.SOL_SOCKET, unix.SO_DETACH_FILTER, 0)
}
fprog := &unix.SockFprog{
Len: uint16(len(filter)),
Filter: &(*(*[]unix.SockFilter)(unsafe.Pointer(&filter)))[0],
}
return unix.SetsockoptSockFprog(sock.fd, unix.SOL_SOCKET, unix.SO_ATTACH_FILTER, fprog)
}
// SetPromiscuous sets promiscous mode to the required value. If it is enabled, traffic not destined for the interface will also be captured.
func (sock *SockRaw) SetPromiscuous(b bool) error {
sock.mu.Lock()
defer sock.mu.Unlock()
mreq := unix.PacketMreq{
Ifindex: int32(sock.ifindex),
Type: unix.PACKET_MR_PROMISC,
}
opt := unix.PACKET_ADD_MEMBERSHIP
if !b {
opt = unix.PACKET_DROP_MEMBERSHIP
}
return unix.SetsockoptPacketMreq(sock.fd, unix.SOL_PACKET, opt, &mreq)
}
// Stats returns number of packets and dropped packets. This will be the number of packets/dropped packets since the last call to stats (not the cummulative sum!).
func (sock *SockRaw) Stats() (*unix.TpacketStats, error) {
sock.mu.Lock()
defer sock.mu.Unlock()
return unix.GetsockoptTpacketStats(sock.fd, unix.SOL_PACKET, unix.PACKET_STATISTICS)
}
// WritePacketData transmits a raw packet.
func (sock *SockRaw) WritePacketData(pkt []byte) error {
_, err := unix.Write(sock.fd, pkt)
return err
}
func tpAlign(x int) int {
return int((uint(x) + unix.TPACKET_ALIGNMENT - 1) &^ (unix.TPACKET_ALIGNMENT - 1))
}
+2 -1
View File
@@ -8,11 +8,12 @@ require (
github.com/aws/aws-sdk-go v1.33.2
github.com/bitly/go-hostpool v0.1.0 // indirect
github.com/bmizerany/assert v0.0.0-20160611221934-b7ed37b82869 // indirect
github.com/google/gopacket v1.1.17
github.com/google/gopacket v1.1.18
github.com/klauspost/compress v1.10.10 // indirect
github.com/mattbaird/elastigo v0.0.0-20170123220020-2fe47fd29e4b
github.com/pierrec/lz4 v2.5.2+incompatible // indirect
github.com/rcrowley/go-metrics v0.0.0-20200313005456-10cdbea86bc0 // indirect
github.com/smartystreets/goconvey v1.6.4 // indirect
golang.org/x/net v0.0.0-20200707034311-ab3426394381 // indirect
golang.org/x/sys v0.0.0-20200323222414-85ca7c5b95cd
)
+2 -2
View File
@@ -30,8 +30,8 @@ github.com/golang/snappy v0.0.1/go.mod h1:/XxbfmMg8lxefKM7IXC3fBNl/7bRcc72aCRzEW
github.com/google/go-cmp v0.3.1/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
github.com/google/go-cmp v0.4.0 h1:xsAVV57WRhGj6kEIi8ReJzQlHHqcBYCElAvkovg3B/4=
github.com/google/go-cmp v0.4.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
github.com/google/gopacket v1.1.17 h1:rMrlX2ZY2UbvT+sdz3+6J+pp2z+msCq9MxTU6ymxbBY=
github.com/google/gopacket v1.1.17/go.mod h1:UdDNZ1OO62aGYVnPhxT1U6aI7ukYtA/kB8vaU0diBUM=
github.com/google/gopacket v1.1.18 h1:lum7VRA9kdlvBi7/v2p7/zcbkduHaCH/SVVyurs7OpY=
github.com/google/gopacket v1.1.18/go.mod h1:UdDNZ1OO62aGYVnPhxT1U6aI7ukYtA/kB8vaU0diBUM=
github.com/gopherjs/gopherjs v0.0.0-20181017120253-0766667cb4d1 h1:EGx4pi6eqNxGaHF6qqu48+N2wcFQ5qg5FXgOdqsJ5d8=
github.com/gopherjs/gopherjs v0.0.0-20181017120253-0766667cb4d1/go.mod h1:wJfORRmW1u3UXTncJ5qlYoELFm8eSnnEO6hX4iZ3EWY=
github.com/hashicorp/go-uuid v1.0.2 h1:cfejS+Tpcp13yd5nYHWDI6qVCny6wyX2Mt5SGur2IGE=
+2 -3
View File
@@ -18,21 +18,20 @@ type Stats struct {
Length int // length of the data
Start time.Time // first packet's timestamp
End time.Time // last packet's timestamp
IPversion byte
SrcAddr string
DstAddr string
IsIncoming bool
TimedOut bool // timeout before getting the whole message
Truncated bool // last packet truncated due to max message size
IPversion byte
}
// Message is the representation of a tcp message
type Message struct {
Stats
packets []*Packet
done chan bool
data []byte
Stats
}
// NewMessage ...
+7 -5
View File
@@ -35,11 +35,13 @@ type Packet struct {
// ParsePacket parse raw packets
func ParsePacket(packet gopacket.Packet) (pckt *Packet, err error) {
// early check of error
_ = packet.ApplicationLayer()
if e, ok := packet.ErrorLayer().(*gopacket.DecodeFailure); ok {
err = e.Error()
return
}
defer func() {
if packet.ErrorLayer() != nil {
err = packet.ErrorLayer().Error()
println(err.Error())
return
}
}()
// initialization
pckt = new(Packet)
+6 -4
View File
@@ -2,6 +2,7 @@ language: go
go:
- 1.11.x
- 1.12.x
- 1.13.x
- master
addons:
@@ -38,10 +39,11 @@ jobs:
install: ./.travis.install.sh
- os: osx
go: 1.x
- os: windows
go: 1.x
# winpcap does not work on travis ci - so install nmap to get libpcap
before_install: choco install nmap
# windows doesn't work on travis (package installation just hangs and then errors out)
# - os: windows
# go: 1.x
# # We don't need nmap - but that's the only way to get npcap:
# before_install: choco install npcap --version 0.86 -y
- stage: style
name: "fmt/vet/lint"
go: 1.x
+1
View File
@@ -17,6 +17,7 @@ Christian Mäder <christian.maeder@nine.ch>
Gernot Vormayr <gvormayr@gmail.com>
Vitor Garcia Graveto <victor.graveto@gmail.com>
Elias Chavarria Reyes <elchavar@cisco.com>
Daniel Rittweiler <ripx80@protonmail.com>
CONTRIBUTORS:
Attila Oláh <attila@attilaolah.eu>
+1 -1
View File
@@ -6,7 +6,7 @@ See [godoc](https://godoc.org/github.com/google/gopacket) for more details.
[![Build Status](https://travis-ci.org/google/gopacket.svg?branch=master)](https://travis-ci.org/google/gopacket)
[![GoDoc](https://godoc.org/github.com/google/gopacket?status.svg)](https://godoc.org/github.com/google/gopacket)
Minimum Go version required is 1.5 except for pcapgo/EthernetHandle, afpacket, and bsdbpf which need at least 1.7 due to x/sys/unix dependencies.
Minimum Go version required is 1.5 except for pcapgo/EthernetHandle, afpacket, and bsdbpf which need at least 1.9 due to x/sys/unix dependencies.
Originally forked from the gopcap project written by Andreas
Krennmair <ak@synflood.at> (http://github.com/akrennmair/gopcap).
+2 -2
View File
@@ -78,7 +78,7 @@ func (p Payload) SerializeTo(b SerializeBuffer, opts SerializeOptions) error {
func decodePayload(data []byte, p PacketBuilder) error {
payload := &Payload{}
if err := payload.DecodeFromBytes(data, p); err != nil {
return nil
return err
}
p.AddLayer(payload)
p.SetApplicationLayer(payload)
@@ -132,7 +132,7 @@ func (p *Fragment) SerializeTo(b SerializeBuffer, opts SerializeOptions) error {
func decodeFragment(data []byte, p PacketBuilder) error {
payload := &Fragment{}
if err := payload.DecodeFromBytes(data, p); err != nil {
return nil
return err
}
p.AddLayer(payload)
p.SetApplicationLayer(payload)
+62 -1
View File
@@ -208,7 +208,7 @@ based on endpoint criteria:
}
}
// Find all packets coming from UDP port 1000 to UDP port 500
interestingFlow := gopacket.NewFlow(layers.NewUDPPortEndpoint(1000), layers.NewUDPPortEndpoint(500))
interestingFlow := gopacket.FlowFromEndpoints(layers.NewUDPPortEndpoint(1000), layers.NewUDPPortEndpoint(500))
if t := packet.NetworkLayer(); t != nil && t.TransportFlow() == interestingFlow {
fmt.Println("Found that UDP flow I was looking for!")
}
@@ -320,6 +320,67 @@ implementing the DecodingLayer interface are usable. Also, it's possible to
create DecodingLayers that are not themselves Layers... see
layers.IPv6ExtensionSkipper for an example of this.
Faster And Customized Decoding with DecodingLayerContainer
By default, DecodingLayerParser uses native map to store and search for a layer
to decode. Though being versatile, in some cases this solution may be not so
optimal. For example, if you have only few layers faster operations may be
provided by sparse array indexing or linear array scan.
To accomodate these scenarios, DecodingLayerContainer interface is introduced
along with its implementations: DecodingLayerSparse, DecodingLayerArray and
DecodingLayerMap. You can specify a container implementation to
DecodingLayerParser with SetDecodingLayerContainer method. Example:
dlp := gopacket.NewDecodingLayerParser(LayerTypeEthernet)
dlp.SetDecodingLayerContainer(gopacket.DecodingLayerSparse(nil))
var eth layers.Ethernet
dlp.AddDecodingLayer(&eth)
// ... add layers and use DecodingLayerParser as usual...
To skip one level of indirection (though sacrificing some capabilities) you may
also use DecodingLayerContainer as a decoding tool as it is. In this case you have to
handle unknown layer types and layer panics by yourself. Example:
func main() {
var eth layers.Ethernet
var ip4 layers.IPv4
var ip6 layers.IPv6
var tcp layers.TCP
dlc := gopacket.DecodingLayerContainer(gopacket.DecodingLayerArray(nil))
dlc = dlc.Put(&eth)
dlc = dlc.Put(&ip4)
dlc = dlc.Put(&ip6)
dlc = dlc.Put(&tcp)
// you may specify some meaningful DecodeFeedback
decoder := dlc.LayersDecoder(LayerTypeEthernet, gopacket.NilDecodeFeedback)
decoded := make([]gopacket.LayerType, 0, 20)
for packetData := range somehowGetPacketData() {
lt, err := decoder(packetData, &decoded)
if err != nil {
fmt.Fprintf(os.Stderr, "Could not decode layers: %v\n", err)
continue
}
if lt != gopacket.LayerTypeZero {
fmt.Fprintf(os.Stderr, "unknown layer type: %v\n", lt)
continue
}
for _, layerType := range decoded {
// examine decoded layertypes just as already shown above
}
}
}
DecodingLayerSparse is the fastest but most effective when LayerType values
that layers in use can decode are not large because otherwise that would lead
to bigger memory footprint. DecodingLayerArray is very compact and primarily
usable if the number of decoding layers is not big (up to ~10-15, but please do
your own benchmarks). DecodingLayerMap is the most versatile one and used by
DecodingLayerParser by default. Please refer to tests and benchmarks in layers
subpackage to further examine usage examples and performance measurements.
You may also choose to implement your own DecodingLayerContainer if you want to
make use of your own internal packet decoding logic.
Creating Packet Data
+10 -1
View File
@@ -10,6 +10,7 @@ package layers
import (
"encoding/binary"
"errors"
"fmt"
"github.com/google/gopacket"
)
@@ -39,17 +40,25 @@ func (arp *ARP) LayerType() gopacket.LayerType { return LayerTypeARP }
// DecodeFromBytes decodes the given bytes into this layer.
func (arp *ARP) DecodeFromBytes(data []byte, df gopacket.DecodeFeedback) error {
if len(data) < 8 {
df.SetTruncated()
return fmt.Errorf("ARP length %d too short", len(data))
}
arp.AddrType = LinkType(binary.BigEndian.Uint16(data[0:2]))
arp.Protocol = EthernetType(binary.BigEndian.Uint16(data[2:4]))
arp.HwAddressSize = data[4]
arp.ProtAddressSize = data[5]
arp.Operation = binary.BigEndian.Uint16(data[6:8])
arpLength := 8 + 2*arp.HwAddressSize + 2*arp.ProtAddressSize
if len(data) < int(arpLength) {
df.SetTruncated()
return fmt.Errorf("ARP length %d too short, %d expected", len(data), arpLength)
}
arp.SourceHwAddress = data[8 : 8+arp.HwAddressSize]
arp.SourceProtAddress = data[8+arp.HwAddressSize : 8+arp.HwAddressSize+arp.ProtAddressSize]
arp.DstHwAddress = data[8+arp.HwAddressSize+arp.ProtAddressSize : 8+2*arp.HwAddressSize+arp.ProtAddressSize]
arp.DstProtAddress = data[8+2*arp.HwAddressSize+arp.ProtAddressSize : 8+2*arp.HwAddressSize+2*arp.ProtAddressSize]
arpLength := 8 + 2*arp.HwAddressSize + 2*arp.ProtAddressSize
arp.Contents = data[:arpLength]
arp.Payload = data[arpLength:]
return nil
+166
View File
@@ -0,0 +1,166 @@
// Copyright 2019 The GoPacket Authors. All rights reserved.
//
// Use of this source code is governed by a BSD-style license that can be found
// in the LICENSE file in the root of the source tree.
package layers
// This file implements the ASF RMCP payload specified in section 3.2.2.3 of
// https://www.dmtf.org/sites/default/files/standards/documents/DSP0136.pdf
import (
"encoding/binary"
"fmt"
"github.com/google/gopacket"
)
const (
// ASFRMCPEnterprise is the IANA-assigned Enterprise Number of the ASF-RMCP.
ASFRMCPEnterprise uint32 = 4542
)
// ASFDataIdentifier encapsulates fields used to uniquely identify the format of
// the data block.
//
// While the enterprise number is almost always 4542 (ASF-RMCP), we support
// registering layers using structs of this type as a key in case any users are
// using OEM-extensions.
type ASFDataIdentifier struct {
// Enterprise is the IANA Enterprise Number associated with the entity that
// defines the message type. A list can be found at
// https://www.iana.org/assignments/enterprise-numbers/enterprise-numbers.
// This can be thought of as the namespace for the message type.
Enterprise uint32
// Type is the message type, defined by the entity associated with the
// enterprise above. No pressure, but in the context of EN 4542, 1 byte is
// the difference between sending a ping and telling a machine to do an
// unconditional power down (0x80 and 0x12 respectively).
Type uint8
}
// LayerType returns the payload layer type corresponding to an ASF message
// type.
func (a ASFDataIdentifier) LayerType() gopacket.LayerType {
if lt := asfDataLayerTypes[a]; lt != 0 {
return lt
}
// some layer types don't have a payload, e.g. ASF-RMCP Presence Ping.
return gopacket.LayerTypePayload
}
// RegisterASFLayerType allows specifying that the data block of ASF packets
// with a given enterprise number and type should be processed by a given layer
// type. This overrides any existing registrations, including defaults.
func RegisterASFLayerType(a ASFDataIdentifier, l gopacket.LayerType) {
asfDataLayerTypes[a] = l
}
var (
// ASFDataIdentifierPresencePong is the message type of the response to a
// Presence Ping message. It indicates the sender is ASF-RMCP-aware.
ASFDataIdentifierPresencePong = ASFDataIdentifier{
Enterprise: ASFRMCPEnterprise,
Type: 0x40,
}
// ASFDataIdentifierPresencePing is a message type sent to a managed client
// to solicit a Presence Pong response. Clients may ignore this if the RMCP
// version is unsupported. Sending this message with a sequence number <255
// is the recommended way of finding out whether an implementation sends
// RMCP ACKs (e.g. iDRAC does, Super Micro does not).
//
// Systems implementing IPMI must respond to this ping to conform to the
// spec, so it is a good substitute for an ICMP ping.
ASFDataIdentifierPresencePing = ASFDataIdentifier{
Enterprise: ASFRMCPEnterprise,
Type: 0x80,
}
// asfDataLayerTypes is used to find the next layer for a given ASF header.
asfDataLayerTypes = map[ASFDataIdentifier]gopacket.LayerType{
ASFDataIdentifierPresencePong: LayerTypeASFPresencePong,
}
)
// ASF defines ASF's generic RMCP message Data block format. See section
// 3.2.2.3.
type ASF struct {
BaseLayer
ASFDataIdentifier
// Tag is used to match request/response pairs. The tag of a response is set
// to that of the message it is responding to. If a message is
// unidirectional, i.e. not part of a request/response pair, this is set to
// 255.
Tag uint8
// 1 byte reserved, set to 0x00.
// Length is the length of this layer's payload in bytes.
Length uint8
}
// LayerType returns LayerTypeASF. It partially satisfies Layer and
// SerializableLayer.
func (*ASF) LayerType() gopacket.LayerType {
return LayerTypeASF
}
// CanDecode returns LayerTypeASF. It partially satisfies DecodingLayer.
func (a *ASF) CanDecode() gopacket.LayerClass {
return a.LayerType()
}
// DecodeFromBytes makes the layer represent the provided bytes. It partially
// satisfies DecodingLayer.
func (a *ASF) DecodeFromBytes(data []byte, df gopacket.DecodeFeedback) error {
if len(data) < 8 {
df.SetTruncated()
return fmt.Errorf("invalid ASF data header, length %v less than 8",
len(data))
}
a.BaseLayer.Contents = data[:8]
a.BaseLayer.Payload = data[8:]
a.Enterprise = binary.BigEndian.Uint32(data[:4])
a.Type = uint8(data[4])
a.Tag = uint8(data[5])
// 1 byte reserved
a.Length = uint8(data[7])
return nil
}
// NextLayerType returns the layer type corresponding to the message type of
// this ASF data layer. This partially satisfies DecodingLayer.
func (a *ASF) NextLayerType() gopacket.LayerType {
return a.ASFDataIdentifier.LayerType()
}
// SerializeTo writes the serialized fom of this layer into the SerializeBuffer,
// partially satisfying SerializableLayer.
func (a *ASF) SerializeTo(b gopacket.SerializeBuffer, opts gopacket.SerializeOptions) error {
payload := b.Bytes()
bytes, err := b.PrependBytes(8)
if err != nil {
return err
}
binary.BigEndian.PutUint32(bytes[:4], a.Enterprise)
bytes[4] = uint8(a.Type)
bytes[5] = a.Tag
bytes[6] = 0x00
if opts.FixLengths {
a.Length = uint8(len(payload))
}
bytes[7] = a.Length
return nil
}
// decodeASF decodes the byte slice into an RMCP-ASF data struct.
func decodeASF(data []byte, p gopacket.PacketBuilder) error {
return decodingLayerDecoder(&ASF{}, data, p)
}
+194
View File
@@ -0,0 +1,194 @@
// Copyright 2019 The GoPacket Authors. All rights reserved.
//
// Use of this source code is governed by a BSD-style license that can be found
// in the LICENSE file in the root of the source tree.
package layers
// This file implements the RMCP ASF Presence Pong message, specified in section
// 3.2.4.3 of
// https://www.dmtf.org/sites/default/files/standards/documents/DSP0136.pdf. It
// also contains non-competing elements from IPMI v2.0, specified in section
// 13.2.4 of
// https://www.intel.com/content/dam/www/public/us/en/documents/specification-updates/ipmi-intelligent-platform-mgt-interface-spec-2nd-gen-v2-0-spec-update.pdf.
import (
"encoding/binary"
"fmt"
"github.com/google/gopacket"
)
type (
// ASFEntity is the type of individual entities that a Presence Pong
// response can indicate support of. The entities currently implemented by
// the spec are IPMI and ASFv1.
ASFEntity uint8
// ASFInteraction is the type of individual interactions that a Presence
// Pong response can indicate support for. The interactions currently
// implemented by the spec are RMCP security extensions. Although not
// specified, IPMI uses this field to indicate support for DASH, which is
// supported as well.
ASFInteraction uint8
)
const (
// ASFDCMIEnterprise is the IANA-assigned Enterprise Number of the Data
// Center Manageability Interface Forum. The Presence Pong response's
// Enterprise field being set to this value indicates support for DCMI. The
// DCMI spec regards the OEM field as reserved, so these should be null.
ASFDCMIEnterprise uint32 = 36465
// ASFPresencePongEntityIPMI ANDs with Presence Pong's supported entities
// field if the managed system supports IPMI.
ASFPresencePongEntityIPMI ASFEntity = 1 << 7
// ASFPresencePongEntityASFv1 ANDs with Presence Pong's supported entities
// field if the managed system supports ASF v1.0.
ASFPresencePongEntityASFv1 ASFEntity = 1
// ASFPresencePongInteractionSecurityExtensions ANDs with Presence Pong's
// supported interactions field if the managed system supports RMCP v2.0
// security extensions. See section 3.2.3.
ASFPresencePongInteractionSecurityExtensions ASFInteraction = 1 << 7
// ASFPresencePongInteractionDASH ANDs with Presence Pong's supported
// interactions field if the managed system supports DMTF DASH. See
// https://www.dmtf.org/standards/dash.
ASFPresencePongInteractionDASH ASFInteraction = 1 << 5
)
// ASFPresencePong defines the structure of a Presence Pong message's payload.
// See section 3.2.4.3.
type ASFPresencePong struct {
BaseLayer
// Enterprise is the IANA Enterprise Number of an entity that has defined
// OEM-specific capabilities for the managed client. If no such capabilities
// exist, this is set to ASF's IANA Enterprise Number.
Enterprise uint32
// OEM identifies OEM-specific capabilities. Its structure is defined by the
// OEM. This is set to 0s if no OEM-specific capabilities exist. This
// implementation does not change byte order from the wire for this field.
OEM [4]byte
// We break out entities and interactions into separate booleans as
// discovery is the entire point of this type of message, so we assume they
// are accessed. It also makes gopacket's default layer printing more
// useful.
// IPMI is true if IPMI is supported by the managed system. There is no
// explicit version in the specification, however given the dates, this is
// assumed to be IPMI v1.0. Support for IPMI is contained in the "supported
// entities" field of the presence pong payload.
IPMI bool
// ASFv1 indicates support for ASF v1.0. This seems somewhat redundant as
// ASF must be supported in order to receive a response. This is contained
// in the "supported entities" field of the presence pong payload.
ASFv1 bool
// SecurityExtensions indicates support for RMCP Security Extensions,
// specified in ASF v2.0. This will always be false for v1.x
// implementations. This is contained in the "supported interactions" field
// of the presence pong payload. This field is defined in ASF v1.0, but has
// no useful value.
SecurityExtensions bool
// DASH is true if DMTF DASH is supported. This is not specified in ASF
// v2.0, but in IPMI v2.0, however the former does not preclude it, so we
// support it.
DASH bool
// 6 bytes reserved after the entities and interactions fields, set to 0s.
}
// SupportsDCMI returns whether the Presence Pong message indicates support for
// the Data Center Management Interface, which is an extension of IPMI v2.0.
func (a *ASFPresencePong) SupportsDCMI() bool {
return a.Enterprise == ASFDCMIEnterprise && a.IPMI && a.ASFv1
}
// LayerType returns LayerTypeASFPresencePong. It partially satisfies Layer and
// SerializableLayer.
func (*ASFPresencePong) LayerType() gopacket.LayerType {
return LayerTypeASFPresencePong
}
// CanDecode returns LayerTypeASFPresencePong. It partially satisfies
// DecodingLayer.
func (a *ASFPresencePong) CanDecode() gopacket.LayerClass {
return a.LayerType()
}
// DecodeFromBytes makes the layer represent the provided bytes. It partially
// satisfies DecodingLayer.
func (a *ASFPresencePong) DecodeFromBytes(data []byte, df gopacket.DecodeFeedback) error {
if len(data) < 16 {
df.SetTruncated()
return fmt.Errorf("invalid ASF presence pong payload, length %v less than 16",
len(data))
}
a.BaseLayer.Contents = data[:16]
a.BaseLayer.Payload = data[16:]
a.Enterprise = binary.BigEndian.Uint32(data[:4])
copy(a.OEM[:], data[4:8]) // N.B. no byte order change
a.IPMI = data[8]&uint8(ASFPresencePongEntityIPMI) != 0
a.ASFv1 = data[8]&uint8(ASFPresencePongEntityASFv1) != 0
a.SecurityExtensions = data[9]&uint8(ASFPresencePongInteractionSecurityExtensions) != 0
a.DASH = data[9]&uint8(ASFPresencePongInteractionDASH) != 0
// ignore remaining 6 bytes; should be set to 0s
return nil
}
// NextLayerType returns LayerTypePayload, as there are no further layers to
// decode. This partially satisfies DecodingLayer.
func (a *ASFPresencePong) NextLayerType() gopacket.LayerType {
return gopacket.LayerTypePayload
}
// SerializeTo writes the serialized fom of this layer into the SerializeBuffer,
// partially satisfying SerializableLayer.
func (a *ASFPresencePong) SerializeTo(b gopacket.SerializeBuffer, _ gopacket.SerializeOptions) error {
bytes, err := b.PrependBytes(16)
if err != nil {
return err
}
binary.BigEndian.PutUint32(bytes[:4], a.Enterprise)
copy(bytes[4:8], a.OEM[:])
bytes[8] = 0
if a.IPMI {
bytes[8] |= uint8(ASFPresencePongEntityIPMI)
}
if a.ASFv1 {
bytes[8] |= uint8(ASFPresencePongEntityASFv1)
}
bytes[9] = 0
if a.SecurityExtensions {
bytes[9] |= uint8(ASFPresencePongInteractionSecurityExtensions)
}
if a.DASH {
bytes[9] |= uint8(ASFPresencePongInteractionDASH)
}
// zero-out remaining 6 bytes
for i := 10; i < len(bytes); i++ {
bytes[i] = 0x00
}
return nil
}
// decodeASFPresencePong decodes the byte slice into an RMCP-ASF Presence Pong
// struct.
func decodeASFPresencePong(data []byte, p gopacket.PacketBuilder) error {
return decodingLayerDecoder(&ASFPresencePong{}, data, p)
}
+7
View File
@@ -124,6 +124,10 @@ func (d *DHCPv4) LayerType() gopacket.LayerType { return LayerTypeDHCPv4 }
// DecodeFromBytes decodes the given bytes into this layer.
func (d *DHCPv4) DecodeFromBytes(data []byte, df gopacket.DecodeFeedback) error {
if len(data) < 240 {
df.SetTruncated()
return fmt.Errorf("DHCPv4 length %d too short", len(data))
}
d.Options = d.Options[:0]
d.Operation = DHCPOp(data[0])
d.HardwareType = LinkType(data[1])
@@ -168,6 +172,9 @@ func (d *DHCPv4) DecodeFromBytes(data []byte, df gopacket.DecodeFeedback) error
start += int(o.Length) + 2
}
}
d.Contents = data
return nil
}
+8
View File
@@ -88,12 +88,20 @@ func (d *DHCPv6) LayerType() gopacket.LayerType { return LayerTypeDHCPv6 }
// DecodeFromBytes decodes the given bytes into this layer.
func (d *DHCPv6) DecodeFromBytes(data []byte, df gopacket.DecodeFeedback) error {
if len(data) < 4 {
df.SetTruncated()
return fmt.Errorf("DHCPv6 length %d too short", len(data))
}
d.BaseLayer = BaseLayer{Contents: data}
d.Options = d.Options[:0]
d.MsgType = DHCPv6MsgType(data[0])
offset := 0
if d.MsgType == DHCPv6MsgTypeRelayForward || d.MsgType == DHCPv6MsgTypeRelayReply {
if len(data) < 34 {
df.SetTruncated()
return fmt.Errorf("DHCPv6 length %d too short for message type %d", len(data), d.MsgType)
}
d.HopCount = data[1]
d.LinkAddr = net.IP(data[2:18])
d.PeerAddr = net.IP(data[18:34])
+68 -38
View File
@@ -52,25 +52,26 @@ type DNSType uint16
// DNSType known values.
const (
DNSTypeA DNSType = 1 // a host address
DNSTypeNS DNSType = 2 // an authoritative name server
DNSTypeMD DNSType = 3 // a mail destination (Obsolete - use MX)
DNSTypeMF DNSType = 4 // a mail forwarder (Obsolete - use MX)
DNSTypeCNAME DNSType = 5 // the canonical name for an alias
DNSTypeSOA DNSType = 6 // marks the start of a zone of authority
DNSTypeMB DNSType = 7 // a mailbox domain name (EXPERIMENTAL)
DNSTypeMG DNSType = 8 // a mail group member (EXPERIMENTAL)
DNSTypeMR DNSType = 9 // a mail rename domain name (EXPERIMENTAL)
DNSTypeNULL DNSType = 10 // a null RR (EXPERIMENTAL)
DNSTypeWKS DNSType = 11 // a well known service description
DNSTypePTR DNSType = 12 // a domain name pointer
DNSTypeHINFO DNSType = 13 // host information
DNSTypeMINFO DNSType = 14 // mailbox or mail list information
DNSTypeMX DNSType = 15 // mail exchange
DNSTypeTXT DNSType = 16 // text strings
DNSTypeAAAA DNSType = 28 // a IPv6 host address [RFC3596]
DNSTypeSRV DNSType = 33 // server discovery [RFC2782] [RFC6195]
DNSTypeOPT DNSType = 41 // OPT Pseudo-RR [RFC6891]
DNSTypeA DNSType = 1 // a host address
DNSTypeNS DNSType = 2 // an authoritative name server
DNSTypeMD DNSType = 3 // a mail destination (Obsolete - use MX)
DNSTypeMF DNSType = 4 // a mail forwarder (Obsolete - use MX)
DNSTypeCNAME DNSType = 5 // the canonical name for an alias
DNSTypeSOA DNSType = 6 // marks the start of a zone of authority
DNSTypeMB DNSType = 7 // a mailbox domain name (EXPERIMENTAL)
DNSTypeMG DNSType = 8 // a mail group member (EXPERIMENTAL)
DNSTypeMR DNSType = 9 // a mail rename domain name (EXPERIMENTAL)
DNSTypeNULL DNSType = 10 // a null RR (EXPERIMENTAL)
DNSTypeWKS DNSType = 11 // a well known service description
DNSTypePTR DNSType = 12 // a domain name pointer
DNSTypeHINFO DNSType = 13 // host information
DNSTypeMINFO DNSType = 14 // mailbox or mail list information
DNSTypeMX DNSType = 15 // mail exchange
DNSTypeTXT DNSType = 16 // text strings
DNSTypeAAAA DNSType = 28 // a IPv6 host address [RFC3596]
DNSTypeSRV DNSType = 33 // server discovery [RFC2782] [RFC6195]
DNSTypeOPT DNSType = 41 // OPT Pseudo-RR [RFC6891]
DNSTypeURI DNSType = 256 // URI RR [RFC7553]
)
func (dt DNSType) String() string {
@@ -115,6 +116,8 @@ func (dt DNSType) String() string {
return "SRV"
case DNSTypeOPT:
return "OPT"
case DNSTypeURI:
return "URI"
}
}
@@ -123,25 +126,26 @@ type DNSResponseCode uint8
// DNSResponseCode known values.
const (
DNSResponseCodeNoErr DNSResponseCode = 0 // No error
DNSResponseCodeFormErr DNSResponseCode = 1 // Format Error [RFC1035]
DNSResponseCodeServFail DNSResponseCode = 2 // Server Failure [RFC1035]
DNSResponseCodeNXDomain DNSResponseCode = 3 // Non-Existent Domain [RFC1035]
DNSResponseCodeNotImp DNSResponseCode = 4 // Not Implemented [RFC1035]
DNSResponseCodeRefused DNSResponseCode = 5 // Query Refused [RFC1035]
DNSResponseCodeYXDomain DNSResponseCode = 6 // Name Exists when it should not [RFC2136]
DNSResponseCodeYXRRSet DNSResponseCode = 7 // RR Set Exists when it should not [RFC2136]
DNSResponseCodeNXRRSet DNSResponseCode = 8 // RR Set that should exist does not [RFC2136]
DNSResponseCodeNotAuth DNSResponseCode = 9 // Server Not Authoritative for zone [RFC2136]
DNSResponseCodeNotZone DNSResponseCode = 10 // Name not contained in zone [RFC2136]
DNSResponseCodeBadVers DNSResponseCode = 16 // Bad OPT Version [RFC2671]
DNSResponseCodeBadSig DNSResponseCode = 16 // TSIG Signature Failure [RFC2845]
DNSResponseCodeBadKey DNSResponseCode = 17 // Key not recognized [RFC2845]
DNSResponseCodeBadTime DNSResponseCode = 18 // Signature out of time window [RFC2845]
DNSResponseCodeBadMode DNSResponseCode = 19 // Bad TKEY Mode [RFC2930]
DNSResponseCodeBadName DNSResponseCode = 20 // Duplicate key name [RFC2930]
DNSResponseCodeBadAlg DNSResponseCode = 21 // Algorithm not supported [RFC2930]
DNSResponseCodeBadTruc DNSResponseCode = 22 // Bad Truncation [RFC4635]
DNSResponseCodeNoErr DNSResponseCode = 0 // No error
DNSResponseCodeFormErr DNSResponseCode = 1 // Format Error [RFC1035]
DNSResponseCodeServFail DNSResponseCode = 2 // Server Failure [RFC1035]
DNSResponseCodeNXDomain DNSResponseCode = 3 // Non-Existent Domain [RFC1035]
DNSResponseCodeNotImp DNSResponseCode = 4 // Not Implemented [RFC1035]
DNSResponseCodeRefused DNSResponseCode = 5 // Query Refused [RFC1035]
DNSResponseCodeYXDomain DNSResponseCode = 6 // Name Exists when it should not [RFC2136]
DNSResponseCodeYXRRSet DNSResponseCode = 7 // RR Set Exists when it should not [RFC2136]
DNSResponseCodeNXRRSet DNSResponseCode = 8 // RR Set that should exist does not [RFC2136]
DNSResponseCodeNotAuth DNSResponseCode = 9 // Server Not Authoritative for zone [RFC2136]
DNSResponseCodeNotZone DNSResponseCode = 10 // Name not contained in zone [RFC2136]
DNSResponseCodeBadVers DNSResponseCode = 16 // Bad OPT Version [RFC2671]
DNSResponseCodeBadSig DNSResponseCode = 16 // TSIG Signature Failure [RFC2845]
DNSResponseCodeBadKey DNSResponseCode = 17 // Key not recognized [RFC2845]
DNSResponseCodeBadTime DNSResponseCode = 18 // Signature out of time window [RFC2845]
DNSResponseCodeBadMode DNSResponseCode = 19 // Bad TKEY Mode [RFC2930]
DNSResponseCodeBadName DNSResponseCode = 20 // Duplicate key name [RFC2930]
DNSResponseCodeBadAlg DNSResponseCode = 21 // Algorithm not supported [RFC2930]
DNSResponseCodeBadTruc DNSResponseCode = 22 // Bad Truncation [RFC4635]
DNSResponseCodeBadCookie DNSResponseCode = 23 // Bad/missing Server Cookie [RFC7873]
)
func (drc DNSResponseCode) String() string {
@@ -184,6 +188,8 @@ func (drc DNSResponseCode) String() string {
return "Algorithm not supported"
case DNSResponseCodeBadTruc:
return "Bad Truncation"
case DNSResponseCodeBadCookie:
return "Bad Cookie"
}
}
@@ -367,6 +373,10 @@ func (d *DNS) DecodeFromBytes(data []byte, df gopacket.DecodeFeedback) error {
d.Additionals = d.Additionals[:i] // strip off erroneous value
return err
}
// extract extended RCODE from OPT RRs, RFC 6891 section 6.1.3
if d.Additionals[i].Type == DNSTypeOPT {
d.ResponseCode = DNSResponseCode(uint8(d.ResponseCode) | uint8(d.Additionals[i].TTL>>20&0xF0))
}
}
if uint16(len(d.Questions)) != d.QDCount {
@@ -427,6 +437,8 @@ func recSize(rr *DNSResourceRecord) int {
return l
case DNSTypeSRV:
return 6 + len(rr.SRV.Name) + 2
case DNSTypeURI:
return 4 + len(rr.URI.Target)
case DNSTypeOPT:
l := len(rr.OPT) * 4
for _, opt := range rr.OPT {
@@ -684,6 +696,7 @@ type DNSResourceRecord struct {
SRV DNSSRV
MX DNSMX
OPT []DNSOPT // See RFC 6891, section 6.1.2
URI DNSURI
// Undecoded TXT for backward compatibility
TXT []byte
@@ -781,6 +794,10 @@ func (rr *DNSResourceRecord) encode(data []byte, offset int, opts gopacket.Seria
binary.BigEndian.PutUint16(data[noff+12:], rr.SRV.Weight)
binary.BigEndian.PutUint16(data[noff+14:], rr.SRV.Port)
encodeName(rr.SRV.Name, data, noff+16)
case DNSTypeURI:
binary.BigEndian.PutUint16(data[noff+10:], rr.URI.Priority)
binary.BigEndian.PutUint16(data[noff+12:], rr.URI.Weight)
copy(data[noff+14:], rr.URI.Target)
case DNSTypeOPT:
noff2 := noff + 10
for _, opt := range rr.OPT {
@@ -813,6 +830,9 @@ func (rr *DNSResourceRecord) String() string {
}
return "OPT " + strings.Join(opts, ",")
}
if rr.Type == DNSTypeURI {
return fmt.Sprintf("URI %d %d %s", rr.URI.Priority, rr.URI.Weight, string(rr.URI.Target))
}
if rr.Class == DNSClassIN {
switch rr.Type {
case DNSTypeA, DNSTypeAAAA:
@@ -924,6 +944,10 @@ func (rr *DNSResourceRecord) decodeRData(data []byte, offset int, buffer *[]byte
return err
}
rr.MX.Name = name
case DNSTypeURI:
rr.URI.Priority = binary.BigEndian.Uint16(data[offset : offset+2])
rr.URI.Weight = binary.BigEndian.Uint16(data[offset+2 : offset+4])
rr.URI.Target = rr.Data[4:]
case DNSTypeSRV:
rr.SRV.Priority = binary.BigEndian.Uint16(data[offset : offset+2])
rr.SRV.Weight = binary.BigEndian.Uint16(data[offset+2 : offset+4])
@@ -964,6 +988,12 @@ type DNSMX struct {
Name []byte
}
// DNSURI is a URI record, defining a target (URI) of a server/service
type DNSURI struct {
Priority, Weight uint16
Target []byte
}
// DNSOptionCode represents the code of a DNS Option, see RFC6891, section 6.1.2
type DNSOptionCode uint16
+1
View File
@@ -922,6 +922,7 @@ func (m *Dot11) DecodeFromBytes(data []byte, df gopacket.DecodeFeedback) error {
}
m.Type = Dot11Type((data[0])&0xFC) >> 2
m.DataLayer = nil
m.Proto = uint8(data[0]) & 0x0003
m.Flags = Dot11Flags(data[1])
m.DurationID = binary.LittleEndian.Uint16(data[2:4])
+4
View File
@@ -27,6 +27,10 @@ func (d *Dot1Q) LayerType() gopacket.LayerType { return LayerTypeDot1Q }
// DecodeFromBytes decodes the given bytes into this layer.
func (d *Dot1Q) DecodeFromBytes(data []byte, df gopacket.DecodeFeedback) error {
if len(data) < 4 {
df.SetTruncated()
return fmt.Errorf("802.1Q tag length %d too short", len(data))
}
d.Priority = (data[0] & 0xE0) >> 5
d.DropEligible = data[0]&0x10 != 0
d.VLANIdentifier = binary.BigEndian.Uint16(data[:2]) & 0x0FFF
+8
View File
@@ -47,9 +47,17 @@ func (e *EAP) LayerType() gopacket.LayerType { return LayerTypeEAP }
// DecodeFromBytes decodes the given bytes into this layer.
func (e *EAP) DecodeFromBytes(data []byte, df gopacket.DecodeFeedback) error {
if len(data) < 4 {
df.SetTruncated()
return fmt.Errorf("EAP length %d too short", len(data))
}
e.Code = EAPCode(data[0])
e.Id = data[1]
e.Length = binary.BigEndian.Uint16(data[2:4])
if len(data) < int(e.Length) {
df.SetTruncated()
return fmt.Errorf("EAP length %d too short, %d expected", len(data), e.Length)
}
switch {
case e.Length > 4:
e.Type = EAPType(data[4])
+4
View File
@@ -25,6 +25,10 @@ func (e *EAPOL) LayerType() gopacket.LayerType { return LayerTypeEAPOL }
// DecodeFromBytes decodes the given bytes into this layer.
func (e *EAPOL) DecodeFromBytes(data []byte, df gopacket.DecodeFeedback) error {
if len(data) < 4 {
df.SetTruncated()
return fmt.Errorf("EAPOL length %d too short", len(data))
}
e.Version = data[0]
e.Type = EAPOLType(data[1])
e.Length = binary.BigEndian.Uint16(data[2:4])
+2 -9
View File
@@ -8,7 +8,6 @@
package layers
import (
"errors"
"fmt"
"runtime"
@@ -26,14 +25,6 @@ type EnumMetadata struct {
LayerType gopacket.LayerType
}
// errorFunc returns a decoder that spits out a specific error message.
func errorFunc(msg string) gopacket.Decoder {
var e = errors.New(msg)
return gopacket.DecodeFunc(func([]byte, gopacket.PacketBuilder) error {
return e
})
}
// EthernetType is an enumeration of ethernet type values, and acts as a decoder
// for any type it supports.
type EthernetType uint16
@@ -130,6 +121,8 @@ const (
LinkTypeLinuxIRDA LinkType = 144
LinkTypeLinuxLAPD LinkType = 177
LinkTypeLinuxUSB LinkType = 220
LinkTypeFC2 LinkType = 224
LinkTypeFC2Framed LinkType = 225
LinkTypeIPv4 LinkType = 228
LinkTypeIPv6 LinkType = 229
)
+39
View File
@@ -0,0 +1,39 @@
// Copyright 2019 The GoPacket Authors. All rights reserved.
//
// Use of this source code is governed by a BSD-style license that can be found
// in the LICENSE file in the root of the source tree.
package layers
import (
"encoding/binary"
"github.com/google/gopacket"
)
// FuzzLayer is a fuzz target for the layers package of gopacket
// A fuzz target is a function processing a binary blob (byte slice)
// The process here is to interpret this data as a packet, and print the layers contents.
// The decoding options and the starting layer are encoded in the first bytes.
// The function returns 1 if this is a valid packet (no error layer)
func FuzzLayer(data []byte) int {
if len(data) < 3 {
return 0
}
// use the first two bytes to choose the top level layer
startLayer := binary.BigEndian.Uint16(data[:2])
var fuzzOpts = gopacket.DecodeOptions{
Lazy: data[2]&0x1 != 0,
NoCopy: data[2]&0x2 != 0,
SkipDecodeRecovery: data[2]&0x4 != 0,
DecodeStreamsAsDatagrams: data[2]&0x8 != 0,
}
p := gopacket.NewPacket(data[3:], gopacket.LayerType(startLayer), fuzzOpts)
for _, l := range p.Layers() {
gopacket.LayerString(l)
}
if p.ErrorLayer() != nil {
return 0
}
return 1
}
+3
View File
@@ -143,6 +143,9 @@ var (
LayerTypeMLDv2MulticastListenerQuery = gopacket.RegisterLayerType(139, gopacket.LayerTypeMetadata{Name: "MLDv2MulticastListenerQuery", Decoder: gopacket.DecodeFunc(decodeMLDv2MulticastListenerQuery)})
LayerTypeTLS = gopacket.RegisterLayerType(140, gopacket.LayerTypeMetadata{Name: "TLS", Decoder: gopacket.DecodeFunc(decodeTLS)})
LayerTypeModbusTCP = gopacket.RegisterLayerType(141, gopacket.LayerTypeMetadata{Name: "ModbusTCP", Decoder: gopacket.DecodeFunc(decodeModbusTCP)})
LayerTypeRMCP = gopacket.RegisterLayerType(142, gopacket.LayerTypeMetadata{Name: "RMCP", Decoder: gopacket.DecodeFunc(decodeRMCP)})
LayerTypeASF = gopacket.RegisterLayerType(143, gopacket.LayerTypeMetadata{Name: "ASF", Decoder: gopacket.DecodeFunc(decodeASF)})
LayerTypeASFPresencePong = gopacket.RegisterLayerType(144, gopacket.LayerTypeMetadata{Name: "ASFPresencePong", Decoder: gopacket.DecodeFunc(decodeASFPresencePong)})
)
var (
+29
View File
@@ -38,6 +38,7 @@ const (
ASExternalLSAtypeV2 = 0x5
ASExternalLSAtype = 0x4005
NSSALSAtype = 0x2007
NSSALSAtypeV2 = 0x7
LinkLSAtype = 0x0008
IntraAreaPrefixLSAtype = 0x2009
)
@@ -129,6 +130,12 @@ type NetworkLSA struct {
AttachedRouter []uint32
}
// NetworkLSAV2 is the struct from RFC 2328 A.4.3.
type NetworkLSAV2 struct {
NetworkMask uint32
AttachedRouter []uint32
}
// RouterV2 extends RouterLSAV2
type RouterV2 struct {
Type uint8
@@ -288,12 +295,24 @@ func extractLSAInformation(lstype, lsalength uint16, data []byte) (interface{},
switch lstype {
case RouterLSAtypeV2:
var routers []RouterV2
var j uint32
for j = 24; j < uint32(lsalength); j += 12 {
router := RouterV2{
LinkID: binary.BigEndian.Uint32(data[j : j+4]),
LinkData: binary.BigEndian.Uint32(data[j+4 : j+8]),
Type: uint8(data[j+8]),
Metric: binary.BigEndian.Uint16(data[j+10 : j+12]),
}
routers = append(routers, router)
}
links := binary.BigEndian.Uint16(data[22:24])
content = RouterLSAV2{
Flags: data[20],
Links: links,
Routers: routers,
}
case NSSALSAtypeV2:
fallthrough
case ASExternalLSAtypeV2:
content = ASExternalLSAV2{
NetworkMask: binary.BigEndian.Uint32(data[20:24]),
@@ -302,6 +321,16 @@ func extractLSAInformation(lstype, lsalength uint16, data []byte) (interface{},
ForwardingAddress: binary.BigEndian.Uint32(data[28:32]),
ExternalRouteTag: binary.BigEndian.Uint32(data[32:36]),
}
case NetworkLSAtypeV2:
var routers []uint32
var j uint32
for j = 24; j < uint32(lsalength); j += 4 {
routers = append(routers, binary.BigEndian.Uint32(data[j:j+4]))
}
content = NetworkLSAV2{
NetworkMask: binary.BigEndian.Uint32(data[20:24]),
AttachedRouter: routers,
}
case RouterLSAtype:
var routers []Router
var j uint32
+1
View File
@@ -115,6 +115,7 @@ var udpPortLayerType = [65536]gopacket.LayerType{
6081: LayerTypeGeneve,
3784: LayerTypeBFD,
2152: LayerTypeGTPv1U,
623: LayerTypeRMCP,
}
// RegisterUDPPortLayerType creates a new mapping between a UDPPort
+170
View File
@@ -0,0 +1,170 @@
// Copyright 2019 The GoPacket Authors. All rights reserved.
//
// Use of this source code is governed by a BSD-style license that can be found
// in the LICENSE file in the root of the source tree.
package layers
// This file implements the ASF-RMCP header specified in section 3.2.2.2 of
// https://www.dmtf.org/sites/default/files/standards/documents/DSP0136.pdf
import (
"fmt"
"github.com/google/gopacket"
)
// RMCPClass is the class of a RMCP layer's payload, e.g. ASF or IPMI. This is a
// 4-bit unsigned int on the wire; all but 6 (ASF), 7 (IPMI) and 8 (OEM-defined)
// are currently reserved.
type RMCPClass uint8
// LayerType returns the payload layer type corresponding to a RMCP class.
func (c RMCPClass) LayerType() gopacket.LayerType {
if lt := rmcpClassLayerTypes[uint8(c)]; lt != 0 {
return lt
}
return gopacket.LayerTypePayload
}
func (c RMCPClass) String() string {
return fmt.Sprintf("%v(%v)", uint8(c), c.LayerType())
}
const (
// RMCPVersion1 identifies RMCP v1.0 in the Version header field. Lower
// values are considered legacy, while higher values are reserved by the
// specification.
RMCPVersion1 uint8 = 0x06
// RMCPNormal indicates a "normal" message, i.e. not an acknowledgement.
RMCPNormal uint8 = 0
// RMCPAck indicates a message is acknowledging a received normal message.
RMCPAck uint8 = 1 << 7
// RMCPClassASF identifies an RMCP message as containing an ASF-RMCP
// payload.
RMCPClassASF RMCPClass = 0x06
// RMCPClassIPMI identifies an RMCP message as containing an IPMI payload.
RMCPClassIPMI RMCPClass = 0x07
// RMCPClassOEM identifies an RMCP message as containing an OEM-defined
// payload.
RMCPClassOEM RMCPClass = 0x08
)
var (
rmcpClassLayerTypes = [16]gopacket.LayerType{
RMCPClassASF: LayerTypeASF,
// RMCPClassIPMI is to implement; RMCPClassOEM is deliberately not
// implemented, so we return LayerTypePayload
}
)
// RegisterRMCPLayerType allows specifying that the payload of a RMCP packet of
// a certain class should processed by the provided layer type. This overrides
// any existing registrations, including defaults.
func RegisterRMCPLayerType(c RMCPClass, l gopacket.LayerType) {
rmcpClassLayerTypes[c] = l
}
// RMCP describes the format of an RMCP header, which forms a UDP payload. See
// section 3.2.2.2.
type RMCP struct {
BaseLayer
// Version identifies the version of the RMCP header. 0x06 indicates RMCP
// v1.0; lower values are legacy, higher values are reserved.
Version uint8
// Sequence is the sequence number assicated with the message. Note that
// this rolls over to 0 after 254, not 255. Seq num 255 indicates the
// receiver must not send an ACK.
Sequence uint8
// Ack indicates whether this packet is an acknowledgement. If it is, the
// payload will be empty.
Ack bool
// Class idicates the structure of the payload. There are only 2^4 valid
// values, however there is no uint4 data type. N.B. the Ack bit has been
// split off into another field. The most significant 4 bits of this field
// will always be 0.
Class RMCPClass
}
// LayerType returns LayerTypeRMCP. It partially satisfies Layer and
// SerializableLayer.
func (*RMCP) LayerType() gopacket.LayerType {
return LayerTypeRMCP
}
// CanDecode returns LayerTypeRMCP. It partially satisfies DecodingLayer.
func (r *RMCP) CanDecode() gopacket.LayerClass {
return r.LayerType()
}
// DecodeFromBytes makes the layer represent the provided bytes. It partially
// satisfies DecodingLayer.
func (r *RMCP) DecodeFromBytes(data []byte, df gopacket.DecodeFeedback) error {
if len(data) < 4 {
df.SetTruncated()
return fmt.Errorf("invalid RMCP header, length %v less than 4",
len(data))
}
r.BaseLayer.Contents = data[:4]
r.BaseLayer.Payload = data[4:]
r.Version = uint8(data[0])
// 1 byte reserved
r.Sequence = uint8(data[2])
r.Ack = data[3]&RMCPAck != 0
r.Class = RMCPClass(data[3] & 0xF)
return nil
}
// NextLayerType returns the data layer of this RMCP layer. This partially
// satisfies DecodingLayer.
func (r *RMCP) NextLayerType() gopacket.LayerType {
return r.Class.LayerType()
}
// Payload returns the data layer. It partially satisfies ApplicationLayer.
func (r *RMCP) Payload() []byte {
return r.BaseLayer.Payload
}
// SerializeTo writes the serialized fom of this layer into the SerializeBuffer,
// partially satisfying SerializableLayer.
func (r *RMCP) SerializeTo(b gopacket.SerializeBuffer, _ gopacket.SerializeOptions) error {
// The IPMI v1.5 spec contains a pad byte for frame sizes of certain lengths
// to work around issues in LAN chips. This is no longer necessary as of
// IPMI v2.0 (renamed to "legacy pad") so we do not attempt to add it. The
// same approach is taken by FreeIPMI:
// http://git.savannah.gnu.org/cgit/freeipmi.git/tree/libfreeipmi/interface/ipmi-lan-interface.c?id=b5ffcd38317daf42074458879f4c55ba6804a595#n836
bytes, err := b.PrependBytes(4)
if err != nil {
return err
}
bytes[0] = r.Version
bytes[1] = 0x00
bytes[2] = r.Sequence
bytes[3] = bool2uint8(r.Ack)<<7 | uint8(r.Class) // thanks, BFD layer
return nil
}
// decodeRMCP decodes the byte slice into an RMCP type, and sets the application
// layer to it.
func decodeRMCP(data []byte, p gopacket.PacketBuilder) error {
rmcp := &RMCP{}
err := rmcp.DecodeFromBytes(data, p)
p.AddLayer(rmcp)
p.SetApplicationLayer(rmcp)
if err != nil {
return err
}
return p.NextDecoder(rmcp.NextLayerType())
}
+1 -1
View File
@@ -25,7 +25,7 @@ Specification has this to say:
be used for all interfaces.
This decoder only supports the compact form, because that is the only
one for which data was avaialble.
one for which data was available.
The datagram is composed of one or more samples of type flow or counter,
and each sample is composed of one or more records describing the sample.
+6 -6
View File
@@ -245,14 +245,11 @@ func (s *SIP) NextLayerType() gopacket.LayerType {
// DecodeFromBytes decodes the slice into the SIP struct.
func (s *SIP) DecodeFromBytes(data []byte, df gopacket.DecodeFeedback) error {
// Init some vars for parsing follow-up
var countLines int
var line []byte
var err error
// Clean leading new line
data = bytes.Trim(data, "\n")
var offset int
// Iterate on all lines of the SIP Headers
// and stop when we reach the SDP (aka when the new line
@@ -265,19 +262,21 @@ func (s *SIP) DecodeFromBytes(data []byte, df gopacket.DecodeFeedback) error {
line, err = buffer.ReadBytes(byte('\n'))
if err != nil {
if err == io.EOF {
if len(bytes.Trim(line, "\r\n")) > 0 {
df.SetTruncated()
}
break
} else {
return err
}
}
offset += len(line)
// Trim the new line delimiters
line = bytes.Trim(line, "\r\n")
// Empty line, we hit Body
// Putting packet remain in Paypload
if len(line) == 0 {
s.BaseLayer.Payload = buffer.Bytes()
break
}
@@ -298,6 +297,7 @@ func (s *SIP) DecodeFromBytes(data []byte, df gopacket.DecodeFeedback) error {
countLines++
}
s.BaseLayer = BaseLayer{Contents: data[:offset], Payload: data[offset:]}
return nil
}
+2 -1
View File
@@ -268,6 +268,7 @@ func (tcp *TCP) DecodeFromBytes(data []byte, df gopacket.DecodeFeedback) error {
tcp.Payload = data[dataStart:]
// From here on, data points just to the header options.
data = data[20:dataStart]
OPTIONS:
for len(data) > 0 {
tcp.Options = append(tcp.Options, TCPOption{OptionType: TCPOptionKind(data[0])})
opt := &tcp.Options[len(tcp.Options)-1]
@@ -275,7 +276,7 @@ func (tcp *TCP) DecodeFromBytes(data []byte, df gopacket.DecodeFeedback) error {
case TCPOptionKindEndList: // End of options
opt.OptionLength = 1
tcp.Padding = data[1:]
break
break OPTIONS
case TCPOptionKindNop: // 1 byte padding
opt.OptionLength = 1
default:
+27 -2
View File
@@ -8,7 +8,9 @@ package layers
import (
"encoding/binary"
"errors"
"fmt"
"github.com/google/gopacket"
)
@@ -37,9 +39,21 @@ type VXLAN struct {
// LayerType returns LayerTypeVXLAN
func (vx *VXLAN) LayerType() gopacket.LayerType { return LayerTypeVXLAN }
func decodeVXLAN(data []byte, p gopacket.PacketBuilder) error {
vx := &VXLAN{}
// CanDecode returns the layer type this DecodingLayer can decode
func (vx *VXLAN) CanDecode() gopacket.LayerClass {
return LayerTypeVXLAN
}
// NextLayerType retuns the next layer we should see after vxlan
func (vx *VXLAN) NextLayerType() gopacket.LayerType {
return LayerTypeEthernet
}
// DecodeFromBytes takes a byte buffer and decodes
func (vx *VXLAN) DecodeFromBytes(data []byte, df gopacket.DecodeFeedback) error {
if len(data) < 8 {
return errors.New("vxlan packet too small")
}
// VNI is a 24bit number, Uint32 requires 32 bits
var buf [4]byte
copy(buf[1:], data[4:7])
@@ -59,6 +73,17 @@ func decodeVXLAN(data []byte, p gopacket.PacketBuilder) error {
vx.Contents = data[:vxlanLength]
vx.Payload = data[vxlanLength:]
return nil
}
func decodeVXLAN(data []byte, p gopacket.PacketBuilder) error {
vx := &VXLAN{}
err := vx.DecodeFromBytes(data, p)
if err != nil {
return err
}
p.AddLayer(vx)
return p.NextDecoder(LinkTypeEthernet)
}
+101
View File
@@ -0,0 +1,101 @@
// Copyright 2019 The GoPacket Authors. All rights reserved.
package gopacket
// Created by gen.go, don't edit manually
// Generated at 2019-06-18 11:37:31.308731293 +0600 +06 m=+0.000842599
// LayersDecoder returns DecodingLayerFunc for specified
// DecodingLayerContainer, LayerType value to start decoding with and
// some DecodeFeedback.
func LayersDecoder(dl DecodingLayerContainer, first LayerType, df DecodeFeedback) DecodingLayerFunc {
firstDec, ok := dl.Decoder(first)
if !ok {
return func([]byte, *[]LayerType) (LayerType, error) {
return first, nil
}
}
if dlc, ok := dl.(DecodingLayerSparse); ok {
return func(data []byte, decoded *[]LayerType) (LayerType, error) {
*decoded = (*decoded)[:0] // Truncated decoded layers.
typ := first
decoder := firstDec
for {
if err := decoder.DecodeFromBytes(data, df); err != nil {
return LayerTypeZero, err
}
*decoded = append(*decoded, typ)
typ = decoder.NextLayerType()
if data = decoder.LayerPayload(); len(data) == 0 {
break
}
if decoder, ok = dlc.Decoder(typ); !ok {
return typ, nil
}
}
return LayerTypeZero, nil
}
}
if dlc, ok := dl.(DecodingLayerArray); ok {
return func(data []byte, decoded *[]LayerType) (LayerType, error) {
*decoded = (*decoded)[:0] // Truncated decoded layers.
typ := first
decoder := firstDec
for {
if err := decoder.DecodeFromBytes(data, df); err != nil {
return LayerTypeZero, err
}
*decoded = append(*decoded, typ)
typ = decoder.NextLayerType()
if data = decoder.LayerPayload(); len(data) == 0 {
break
}
if decoder, ok = dlc.Decoder(typ); !ok {
return typ, nil
}
}
return LayerTypeZero, nil
}
}
if dlc, ok := dl.(DecodingLayerMap); ok {
return func(data []byte, decoded *[]LayerType) (LayerType, error) {
*decoded = (*decoded)[:0] // Truncated decoded layers.
typ := first
decoder := firstDec
for {
if err := decoder.DecodeFromBytes(data, df); err != nil {
return LayerTypeZero, err
}
*decoded = append(*decoded, typ)
typ = decoder.NextLayerType()
if data = decoder.LayerPayload(); len(data) == 0 {
break
}
if decoder, ok = dlc.Decoder(typ); !ok {
return typ, nil
}
}
return LayerTypeZero, nil
}
}
dlc := dl
return func(data []byte, decoded *[]LayerType) (LayerType, error) {
*decoded = (*decoded)[:0] // Truncated decoded layers.
typ := first
decoder := firstDec
for {
if err := decoder.DecodeFromBytes(data, df); err != nil {
return LayerTypeZero, err
}
*decoded = append(*decoded, typ)
typ = decoder.NextLayerType()
if data = decoder.LayerPayload(); len(data) == 0 {
break
}
if decoder, ok = dlc.Decoder(typ); !ok {
return typ, nil
}
}
return LayerTypeZero, nil
}
}
+169 -26
View File
@@ -10,6 +10,12 @@ import (
"fmt"
)
// A container for single LayerType->DecodingLayer mapping.
type decodingLayerElem struct {
typ LayerType
dec DecodingLayer
}
// DecodingLayer is an interface for packet layers that can decode themselves.
//
// The important part of DecodingLayer is that they decode themselves in-place.
@@ -39,15 +45,150 @@ type DecodingLayer interface {
LayerPayload() []byte
}
// DecodingLayerFunc decodes given packet and stores decoded LayerType
// values into specified slice. Returns either first encountered
// unsupported LayerType value or decoding error. In case of success,
// returns (LayerTypeZero, nil).
type DecodingLayerFunc func([]byte, *[]LayerType) (LayerType, error)
// DecodingLayerContainer stores all DecodingLayer-s and serves as a
// searching tool for DecodingLayerParser.
type DecodingLayerContainer interface {
// Put adds new DecodingLayer to container. The new instance of
// the same DecodingLayerContainer is returned so it may be
// implemented as a value receiver.
Put(DecodingLayer) DecodingLayerContainer
// Decoder returns DecodingLayer to decode given LayerType and
// true if it was found. If no decoder found, return false.
Decoder(LayerType) (DecodingLayer, bool)
// LayersDecoder returns DecodingLayerFunc which decodes given
// packet, starting with specified LayerType and DecodeFeedback.
LayersDecoder(first LayerType, df DecodeFeedback) DecodingLayerFunc
}
// DecodingLayerSparse is a sparse array-based implementation of
// DecodingLayerContainer. Each DecodingLayer is addressed in an
// allocated slice by LayerType value itself. Though this is the
// fastest container it may be memory-consuming if used with big
// LayerType values.
type DecodingLayerSparse []DecodingLayer
// Put implements DecodingLayerContainer interface.
func (dl DecodingLayerSparse) Put(d DecodingLayer) DecodingLayerContainer {
maxLayerType := LayerType(len(dl) - 1)
for _, typ := range d.CanDecode().LayerTypes() {
if typ > maxLayerType {
maxLayerType = typ
}
}
if extra := maxLayerType - LayerType(len(dl)) + 1; extra > 0 {
dl = append(dl, make([]DecodingLayer, extra)...)
}
for _, typ := range d.CanDecode().LayerTypes() {
dl[typ] = d
}
return dl
}
// LayersDecoder implements DecodingLayerContainer interface.
func (dl DecodingLayerSparse) LayersDecoder(first LayerType, df DecodeFeedback) DecodingLayerFunc {
return LayersDecoder(dl, first, df)
}
// Decoder implements DecodingLayerContainer interface.
func (dl DecodingLayerSparse) Decoder(typ LayerType) (DecodingLayer, bool) {
if int64(typ) < int64(len(dl)) {
decoder := dl[typ]
return decoder, decoder != nil
}
return nil, false
}
// DecodingLayerArray is an array-based implementation of
// DecodingLayerContainer. Each DecodingLayer is searched linearly in
// an allocated slice in one-by-one fashion.
type DecodingLayerArray []decodingLayerElem
// Put implements DecodingLayerContainer interface.
func (dl DecodingLayerArray) Put(d DecodingLayer) DecodingLayerContainer {
TYPES:
for _, typ := range d.CanDecode().LayerTypes() {
for i := range dl {
if dl[i].typ == typ {
dl[i].dec = d
continue TYPES
}
}
dl = append(dl, decodingLayerElem{typ, d})
}
return dl
}
// Decoder implements DecodingLayerContainer interface.
func (dl DecodingLayerArray) Decoder(typ LayerType) (DecodingLayer, bool) {
for i := range dl {
if dl[i].typ == typ {
return dl[i].dec, true
}
}
return nil, false
}
// LayersDecoder implements DecodingLayerContainer interface.
func (dl DecodingLayerArray) LayersDecoder(first LayerType, df DecodeFeedback) DecodingLayerFunc {
return LayersDecoder(dl, first, df)
}
// DecodingLayerMap is an map-based implementation of
// DecodingLayerContainer. Each DecodingLayer is searched in a map
// hashed by LayerType value.
type DecodingLayerMap map[LayerType]DecodingLayer
// Put implements DecodingLayerContainer interface.
func (dl DecodingLayerMap) Put(d DecodingLayer) DecodingLayerContainer {
for _, typ := range d.CanDecode().LayerTypes() {
if dl == nil {
dl = make(map[LayerType]DecodingLayer)
}
dl[typ] = d
}
return dl
}
// Decoder implements DecodingLayerContainer interface.
func (dl DecodingLayerMap) Decoder(typ LayerType) (DecodingLayer, bool) {
d, ok := dl[typ]
return d, ok
}
// LayersDecoder implements DecodingLayerContainer interface.
func (dl DecodingLayerMap) LayersDecoder(first LayerType, df DecodeFeedback) DecodingLayerFunc {
return LayersDecoder(dl, first, df)
}
// Static code check.
var (
_ = []DecodingLayerContainer{
DecodingLayerSparse(nil),
DecodingLayerMap(nil),
DecodingLayerArray(nil),
}
)
// DecodingLayerParser parses a given set of layer types. See DecodeLayers for
// more information on how DecodingLayerParser should be used.
type DecodingLayerParser struct {
// DecodingLayerParserOptions is the set of options available to the
// user to define the parser's behavior.
DecodingLayerParserOptions
first LayerType
decoders map[LayerType]DecodingLayer
df DecodeFeedback
dlc DecodingLayerContainer
first LayerType
df DecodeFeedback
decodeFunc DecodingLayerFunc
// Truncated is set when a decode layer detects that the packet has been
// truncated.
Truncated bool
@@ -57,9 +198,7 @@ type DecodingLayerParser struct {
// the decoding layer's CanDecode layers to the parser... should they be
// encountered, they'll be parsed.
func (l *DecodingLayerParser) AddDecodingLayer(d DecodingLayer) {
for _, typ := range d.CanDecode().LayerTypes() {
l.decoders[typ] = d
}
l.SetDecodingLayerContainer(l.dlc.Put(d))
}
// SetTruncated is used by DecodingLayers to set the Truncated boolean in the
@@ -77,18 +216,30 @@ func (l *DecodingLayerParser) SetTruncated() {
// subsequently decoded layers to find the next relevant decoder. Should a
// deoder not be available for the layer type returned by NextLayerType,
// decoding will stop.
//
// NewDecodingLayerParser uses DecodingLayerMap container by
// default.
func NewDecodingLayerParser(first LayerType, decoders ...DecodingLayer) *DecodingLayerParser {
dlp := &DecodingLayerParser{
decoders: make(map[LayerType]DecodingLayer),
first: first,
}
dlp := &DecodingLayerParser{first: first}
dlp.df = dlp // Cast this once to the interface
// default container
dlc := DecodingLayerContainer(DecodingLayerMap(make(map[LayerType]DecodingLayer)))
for _, d := range decoders {
dlp.AddDecodingLayer(d)
dlc = dlc.Put(d)
}
dlp.SetDecodingLayerContainer(dlc)
return dlp
}
// SetDecodingLayerContainer specifies container with decoders. This
// call replaces all decoders already registered in given instance of
// DecodingLayerParser.
func (l *DecodingLayerParser) SetDecodingLayerContainer(dlc DecodingLayerContainer) {
l.dlc = dlc
l.decodeFunc = l.dlc.LayersDecoder(l.first, l.df)
}
// DecodeLayers decodes as many layers as possible from the given data. It
// initially treats the data as layer type 'typ', then uses NextLayerType on
// each subsequent decoded layer until it gets to a layer type it doesn't know
@@ -153,23 +304,15 @@ func (l *DecodingLayerParser) DecodeLayers(data []byte, decoded *[]LayerType) (e
if !l.IgnorePanic {
defer panicToError(&err)
}
typ := l.first
*decoded = (*decoded)[:0] // Truncated decoded layers.
for len(data) > 0 {
decoder, ok := l.decoders[typ]
if !ok {
if l.IgnoreUnsupported {
return nil
}
return UnsupportedLayerType(typ)
} else if err = decoder.DecodeFromBytes(data, l.df); err != nil {
return err
typ, err := l.decodeFunc(data, decoded)
if typ != LayerTypeZero {
// no decoder
if l.IgnoreUnsupported {
return nil
}
*decoded = append(*decoded, typ)
typ = decoder.NextLayerType()
data = decoder.LayerPayload()
return UnsupportedLayerType(typ)
}
return nil
return err
}
// UnsupportedLayerType is returned by DecodingLayerParser if DecodeLayers
+18 -8
View File
@@ -96,11 +96,18 @@ type InterfaceAddress struct {
P2P net.IP // P2P destination address for this IP may be nil
}
// bpfFilter keeps C.struct_bpf_program separate from BPF.orig which might be a pointer to go memory.
// This is a workaround for https://github.com/golang/go/issues/32970 which will be fixed in go1.14.
// (type conversion is in pcap_unix.go pcapOfflineFilter)
type bpfFilter struct {
bpf pcapBpfProgram // takes a finalizer, not overriden by outsiders
}
// BPF is a compiled filter program, useful for offline packet matching.
type BPF struct {
orig string
bpf pcapBpfProgram // takes a finalizer, not overriden by outsiders
hdr pcapPkthdr // allocate on the heap to enable optimizations
bpf *bpfFilter
hdr pcapPkthdr // allocate on the heap to enable optimizations
}
// BPFInstruction is a byte encoded structure holding a BPF instruction
@@ -264,6 +271,7 @@ const (
aeDenied = activateError(pcapErrorDenied)
aeNotUp = activateError(pcapErrorNotUp)
aeWarning = activateError(pcapWarning)
aeError = activateError(pcapError)
)
func (a activateError) Error() string {
@@ -282,6 +290,8 @@ func (a activateError) Error() string {
return "Interface Not Up"
case aeWarning:
return fmt.Sprintf("Warning: %v", activateErrMsg.Error())
case aeError:
return fmt.Sprintf("Error: %v", activateErrMsg.Error())
default:
return fmt.Sprintf("unknown activated error: %d", a)
}
@@ -508,10 +518,10 @@ func bpfInstructionFilter(bpfInstructions []BPFInstruction) (bpf pcapBpfProgram,
// BPF filters need to be created from activated handles, because they need to
// know the underlying link type to correctly compile their offsets.
func (p *Handle) NewBPF(expr string) (*BPF, error) {
bpf := &BPF{orig: expr}
bpf := &BPF{orig: expr, bpf: new(bpfFilter)}
var err error
bpf.bpf, err = p.pcapCompile(expr, pcapNetmaskUnknown)
bpf.bpf.bpf, err = p.pcapCompile(expr, pcapNetmaskUnknown)
if err != nil {
return nil, err
}
@@ -548,9 +558,9 @@ func NewBPF(linkType layers.LinkType, captureLength int, expr string) (*BPF, err
// know the underlying link type to correctly compile their offsets.
func (p *Handle) NewBPFInstructionFilter(bpfInstructions []BPFInstruction) (*BPF, error) {
var err error
bpf := &BPF{orig: "BPF Instruction Filter"}
bpf := &BPF{orig: "BPF Instruction Filter", bpf: new(bpfFilter)}
bpf.bpf, err = bpfInstructionFilter(bpfInstructions)
bpf.bpf.bpf, err = bpfInstructionFilter(bpfInstructions)
if err != nil {
return nil, err
}
@@ -559,7 +569,7 @@ func (p *Handle) NewBPFInstructionFilter(bpfInstructions []BPFInstruction) (*BPF
return bpf, nil
}
func destroyBPF(bpf *BPF) {
bpf.bpf.free()
bpf.bpf.bpf.free()
}
// String returns the original string this BPF filter was compiled from.
@@ -756,7 +766,7 @@ func (p *InactiveHandle) Activate() (*Handle, error) {
pcapSetTstampPrecision(p.cptr, pcapTstampPrecisionNano)
handle, err := p.pcapActivate()
if err != aeNoError {
if err == aeWarning {
if err == aeWarning || err == aeError {
activateErrMsg = p.Error()
}
return nil, err
+17 -19
View File
@@ -33,6 +33,7 @@ import (
#include <stdlib.h>
#include <pcap.h>
#include <stdint.h>
#include <poll.h>
// Some old versions of pcap don't define this constant.
#ifndef PCAP_NETMASK_UNKNOWN
@@ -142,28 +143,24 @@ int pcap_offline_filter_escaping(struct bpf_program *fp, uintptr_t pkt_hdr, uint
// pcap_wait returns when the next packet is available or the timeout expires.
// Since it uses pcap_get_selectable_fd, it will not work in Windows.
int pcap_wait(pcap_t *p, int usec) {
fd_set fds;
int pcap_wait(pcap_t *p, int msec) {
struct pollfd fds[1];
int fd;
struct timeval tv;
fd = pcap_get_selectable_fd(p);
if(fd < 0) {
return fd;
}
FD_ZERO(&fds);
FD_SET(fd, &fds);
fds[0].fd = fd;
fds[0].events = POLLIN;
tv.tv_sec = 0;
tv.tv_usec = usec;
if(usec != 0) {
return select(fd+1, &fds, NULL, NULL, &tv);
if(msec != 0) {
return poll(fds, 1, msec);
}
// block indefinitely if no timeout provided
return select(fd+1, &fds, NULL, NULL, NULL);
return poll(fds, 1, -1);
}
*/
@@ -179,6 +176,7 @@ const (
pcapErrorDenied = C.PCAP_ERROR_PERM_DENIED
pcapErrorNotUp = C.PCAP_ERROR_IFACE_NOT_UP
pcapWarning = C.PCAP_WARNING
pcapError = C.PCAP_ERROR
pcapDIN = C.PCAP_D_IN
pcapDOUT = C.PCAP_D_OUT
pcapDINOUT = C.PCAP_D_INOUT
@@ -348,7 +346,7 @@ func (b *BPF) pcapOfflineFilter(ci gopacket.CaptureInfo, data []byte) bool {
hdr.caplen = C.bpf_u_int32(len(data)) // Trust actual length over ci.Length.
hdr.len = C.bpf_u_int32(ci.Length)
dataptr := (*C.u_char)(unsafe.Pointer(&data[0]))
return C.pcap_offline_filter_escaping((*C.struct_bpf_program)(&b.bpf),
return C.pcap_offline_filter_escaping((*C.struct_bpf_program)(&b.bpf.bpf),
C.uintptr_t(uintptr(unsafe.Pointer(hdr))),
C.uintptr_t(uintptr(unsafe.Pointer(dataptr)))) != 0
}
@@ -684,13 +682,13 @@ func (p *Handle) setNonBlocking() error {
// waitForPacket waits for a packet or for the timeout to expire.
func (p *Handle) waitForPacket() {
// need to wait less than the read timeout according to pcap documentation.
// timeoutMillis rounds up to at least one millisecond so we can safely
// subtract up to a millisecond.
usec := timeoutMillis(p.timeout) * 1000
usec -= 100
C.pcap_wait(p.cptr, C.int(usec))
// According to pcap_get_selectable_fd() man page, there are some cases where it will
// return a file descriptor, but a simple call of select() or poll() will not indicate
// that the descriptor is readable until a full buffer's worth of packets is received,
// so the call must have a timeout less than *or equal* to the packet buffer timeout.
// The packet buffer timeout is set to timeoutMillis(p.timeout) in pcapOpenLive(),
// so we should be fine to use it here too.
C.pcap_wait(p.cptr, C.int(timeoutMillis(p.timeout)))
}
// openOfflineFile returns contents of input file as a *Handle.
+20 -7
View File
@@ -19,6 +19,7 @@ import (
"github.com/google/gopacket"
"github.com/google/gopacket/layers"
"golang.org/x/sys/windows"
)
var pcapLoaded = false
@@ -66,7 +67,7 @@ func initLoadedDllPath(kernel32 syscall.Handle) {
}
func mustLoad(fun string) uintptr {
addr, err := syscall.GetProcAddress(wpcapHandle, fun)
addr, err := windows.GetProcAddress(wpcapHandle, fun)
if err != nil {
panic(fmt.Sprintf("Couldn't load function %s from %s", fun, loadedDllPath))
}
@@ -74,7 +75,7 @@ func mustLoad(fun string) uintptr {
}
func mightLoad(fun string) uintptr {
addr, err := syscall.GetProcAddress(wpcapHandle, fun)
addr, err := windows.GetProcAddress(wpcapHandle, fun)
if err != nil {
return 0
}
@@ -101,7 +102,7 @@ func bytePtrToString(r uintptr) string {
return byteSliceToString(bval[:])
}
var wpcapHandle syscall.Handle
var wpcapHandle windows.Handle
var msvcrtHandle syscall.Handle
var (
callocPtr,
@@ -171,9 +172,21 @@ func LoadWinPCAP() error {
initDllPath(kernel32)
wpcapHandle, err = syscall.LoadLibrary("wpcap.dll")
if err != nil {
return fmt.Errorf("couldn't load wpcap.dll")
if haveSearch, _ := syscall.GetProcAddress(kernel32, "AddDllDirectory"); haveSearch != 0 {
// if AddDllDirectory is present, we can use LOAD_LIBRARY_* stuff with LoadLibraryEx to avoid wpcap.dll hijacking
// see: https://msdn.microsoft.com/en-us/library/ff919712%28VS.85%29.aspx
const LOAD_LIBRARY_SEARCH_USER_DIRS = 0x00000400
const LOAD_LIBRARY_SEARCH_SYSTEM32 = 0x00000800
wpcapHandle, err = windows.LoadLibraryEx("wpcap.dll", 0, LOAD_LIBRARY_SEARCH_USER_DIRS|LOAD_LIBRARY_SEARCH_SYSTEM32)
if err != nil {
return fmt.Errorf("couldn't load wpcap.dll")
}
} else {
// otherwise fall back to load it with the unsafe search cause by SetDllDirectory
wpcapHandle, err = windows.LoadLibrary("wpcap.dll")
if err != nil {
return fmt.Errorf("couldn't load wpcap.dll")
}
}
initLoadedDllPath(kernel32)
msvcrtHandle, err = syscall.LoadLibrary("msvcrt.dll")
@@ -432,7 +445,7 @@ func (b *BPF) pcapOfflineFilter(ci gopacket.CaptureInfo, data []byte) bool {
hdr.Ts.Usec = int32(ci.Timestamp.Nanosecond() / 1000)
hdr.Caplen = uint32(len(data)) // Trust actual length over ci.Length.
hdr.Len = uint32(ci.Length)
e, _, _ := syscall.Syscall(pcapOfflineFilterPtr, 3, uintptr(unsafe.Pointer(&b.bpf)), uintptr(unsafe.Pointer(&hdr)), uintptr(unsafe.Pointer(&data[0])))
e, _, _ := syscall.Syscall(pcapOfflineFilterPtr, 3, uintptr(unsafe.Pointer(&b.bpf.bpf)), uintptr(unsafe.Pointer(&hdr)), uintptr(unsafe.Pointer(&data[0])))
return e != 0
}
+3
View File
@@ -0,0 +1,3 @@
# This source code refers to The Go Authors for copyright purposes.
# The master list of authors is in the main Go distribution,
# visible at http://tip.golang.org/AUTHORS.
+3
View File
@@ -0,0 +1,3 @@
# This source code was written by the Go contributors.
# The master list of contributors is in the main Go distribution,
# visible at http://tip.golang.org/CONTRIBUTORS.
+27
View File
@@ -0,0 +1,27 @@
Copyright (c) 2009 The Go Authors. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above
copyright notice, this list of conditions and the following disclaimer
in the documentation and/or other materials provided with the
distribution.
* Neither the name of Google Inc. nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+22
View File
@@ -0,0 +1,22 @@
Additional IP Rights Grant (Patents)
"This implementation" means the copyrightable works distributed by
Google as part of the Go project.
Google hereby grants to You a perpetual, worldwide, non-exclusive,
no-charge, royalty-free, irrevocable (except as stated in this section)
patent license to make, have made, use, offer to sell, sell, import,
transfer and otherwise run, modify and propagate the contents of this
implementation of Go, where such license applies only to those patent
claims, both currently owned or controlled by Google and acquired in
the future, licensable by Google that are necessarily infringed by this
implementation of Go. This grant does not include claims that would be
infringed only as a consequence of further modification of this
implementation. If you or your agent or exclusive licensee institute or
order or agree to the institution of patent litigation against any
entity (including a cross-claim or counterclaim in a lawsuit) alleging
that this implementation of Go or any code incorporated within this
implementation of Go constitutes direct or contributory patent
infringement, or inducement of patent infringement, then any patent
rights granted to you under this License for this implementation of Go
shall terminate as of the date such litigation is filed.
+2
View File
@@ -0,0 +1,2 @@
_obj/
unix.test
+184
View File
@@ -0,0 +1,184 @@
# Building `sys/unix`
The sys/unix package provides access to the raw system call interface of the
underlying operating system. See: https://godoc.org/golang.org/x/sys/unix
Porting Go to a new architecture/OS combination or adding syscalls, types, or
constants to an existing architecture/OS pair requires some manual effort;
however, there are tools that automate much of the process.
## Build Systems
There are currently two ways we generate the necessary files. We are currently
migrating the build system to use containers so the builds are reproducible.
This is being done on an OS-by-OS basis. Please update this documentation as
components of the build system change.
### Old Build System (currently for `GOOS != "linux"`)
The old build system generates the Go files based on the C header files
present on your system. This means that files
for a given GOOS/GOARCH pair must be generated on a system with that OS and
architecture. This also means that the generated code can differ from system
to system, based on differences in the header files.
To avoid this, if you are using the old build system, only generate the Go
files on an installation with unmodified header files. It is also important to
keep track of which version of the OS the files were generated from (ex.
Darwin 14 vs Darwin 15). This makes it easier to track the progress of changes
and have each OS upgrade correspond to a single change.
To build the files for your current OS and architecture, make sure GOOS and
GOARCH are set correctly and run `mkall.sh`. This will generate the files for
your specific system. Running `mkall.sh -n` shows the commands that will be run.
Requirements: bash, go
### New Build System (currently for `GOOS == "linux"`)
The new build system uses a Docker container to generate the go files directly
from source checkouts of the kernel and various system libraries. This means
that on any platform that supports Docker, all the files using the new build
system can be generated at once, and generated files will not change based on
what the person running the scripts has installed on their computer.
The OS specific files for the new build system are located in the `${GOOS}`
directory, and the build is coordinated by the `${GOOS}/mkall.go` program. When
the kernel or system library updates, modify the Dockerfile at
`${GOOS}/Dockerfile` to checkout the new release of the source.
To build all the files under the new build system, you must be on an amd64/Linux
system and have your GOOS and GOARCH set accordingly. Running `mkall.sh` will
then generate all of the files for all of the GOOS/GOARCH pairs in the new build
system. Running `mkall.sh -n` shows the commands that will be run.
Requirements: bash, go, docker
## Component files
This section describes the various files used in the code generation process.
It also contains instructions on how to modify these files to add a new
architecture/OS or to add additional syscalls, types, or constants. Note that
if you are using the new build system, the scripts/programs cannot be called normally.
They must be called from within the docker container.
### asm files
The hand-written assembly file at `asm_${GOOS}_${GOARCH}.s` implements system
call dispatch. There are three entry points:
```
func Syscall(trap, a1, a2, a3 uintptr) (r1, r2, err uintptr)
func Syscall6(trap, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2, err uintptr)
func RawSyscall(trap, a1, a2, a3 uintptr) (r1, r2, err uintptr)
```
The first and second are the standard ones; they differ only in how many
arguments can be passed to the kernel. The third is for low-level use by the
ForkExec wrapper. Unlike the first two, it does not call into the scheduler to
let it know that a system call is running.
When porting Go to an new architecture/OS, this file must be implemented for
each GOOS/GOARCH pair.
### mksysnum
Mksysnum is a Go program located at `${GOOS}/mksysnum.go` (or `mksysnum_${GOOS}.go`
for the old system). This program takes in a list of header files containing the
syscall number declarations and parses them to produce the corresponding list of
Go numeric constants. See `zsysnum_${GOOS}_${GOARCH}.go` for the generated
constants.
Adding new syscall numbers is mostly done by running the build on a sufficiently
new installation of the target OS (or updating the source checkouts for the
new build system). However, depending on the OS, you make need to update the
parsing in mksysnum.
### mksyscall.go
The `syscall.go`, `syscall_${GOOS}.go`, `syscall_${GOOS}_${GOARCH}.go` are
hand-written Go files which implement system calls (for unix, the specific OS,
or the specific OS/Architecture pair respectively) that need special handling
and list `//sys` comments giving prototypes for ones that can be generated.
The mksyscall.go program takes the `//sys` and `//sysnb` comments and converts
them into syscalls. This requires the name of the prototype in the comment to
match a syscall number in the `zsysnum_${GOOS}_${GOARCH}.go` file. The function
prototype can be exported (capitalized) or not.
Adding a new syscall often just requires adding a new `//sys` function prototype
with the desired arguments and a capitalized name so it is exported. However, if
you want the interface to the syscall to be different, often one will make an
unexported `//sys` prototype, an then write a custom wrapper in
`syscall_${GOOS}.go`.
### types files
For each OS, there is a hand-written Go file at `${GOOS}/types.go` (or
`types_${GOOS}.go` on the old system). This file includes standard C headers and
creates Go type aliases to the corresponding C types. The file is then fed
through godef to get the Go compatible definitions. Finally, the generated code
is fed though mkpost.go to format the code correctly and remove any hidden or
private identifiers. This cleaned-up code is written to
`ztypes_${GOOS}_${GOARCH}.go`.
The hardest part about preparing this file is figuring out which headers to
include and which symbols need to be `#define`d to get the actual data
structures that pass through to the kernel system calls. Some C libraries
preset alternate versions for binary compatibility and translate them on the
way in and out of system calls, but there is almost always a `#define` that can
get the real ones.
See `types_darwin.go` and `linux/types.go` for examples.
To add a new type, add in the necessary include statement at the top of the
file (if it is not already there) and add in a type alias line. Note that if
your type is significantly different on different architectures, you may need
some `#if/#elif` macros in your include statements.
### mkerrors.sh
This script is used to generate the system's various constants. This doesn't
just include the error numbers and error strings, but also the signal numbers
an a wide variety of miscellaneous constants. The constants come from the list
of include files in the `includes_${uname}` variable. A regex then picks out
the desired `#define` statements, and generates the corresponding Go constants.
The error numbers and strings are generated from `#include <errno.h>`, and the
signal numbers and strings are generated from `#include <signal.h>`. All of
these constants are written to `zerrors_${GOOS}_${GOARCH}.go` via a C program,
`_errors.c`, which prints out all the constants.
To add a constant, add the header that includes it to the appropriate variable.
Then, edit the regex (if necessary) to match the desired constant. Avoid making
the regex too broad to avoid matching unintended constants.
### mkmerge.go
This program is used to extract duplicate const, func, and type declarations
from the generated architecture-specific files listed below, and merge these
into a common file for each OS.
The merge is performed in the following steps:
1. Construct the set of common code that is idential in all architecture-specific files.
2. Write this common code to the merged file.
3. Remove the common code from all architecture-specific files.
## Generated files
### `zerror_${GOOS}_${GOARCH}.go`
A file containing all of the system's generated error numbers, error strings,
signal numbers, and constants. Generated by `mkerrors.sh` (see above).
### `zsyscall_${GOOS}_${GOARCH}.go`
A file containing all the generated syscalls for a specific GOOS and GOARCH.
Generated by `mksyscall.go` (see above).
### `zsysnum_${GOOS}_${GOARCH}.go`
A list of numeric constants for all the syscall number of the specific GOOS
and GOARCH. Generated by mksysnum (see above).
### `ztypes_${GOOS}_${GOARCH}.go`
A file containing Go types for passing into (or returning from) syscalls.
Generated by godefs and the types file (see above).
+86
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@@ -0,0 +1,86 @@
// Copyright 2018 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.
// CPU affinity functions
package unix
import (
"math/bits"
"unsafe"
)
const cpuSetSize = _CPU_SETSIZE / _NCPUBITS
// CPUSet represents a CPU affinity mask.
type CPUSet [cpuSetSize]cpuMask
func schedAffinity(trap uintptr, pid int, set *CPUSet) error {
_, _, e := RawSyscall(trap, uintptr(pid), uintptr(unsafe.Sizeof(*set)), uintptr(unsafe.Pointer(set)))
if e != 0 {
return errnoErr(e)
}
return nil
}
// SchedGetaffinity gets the CPU affinity mask of the thread specified by pid.
// If pid is 0 the calling thread is used.
func SchedGetaffinity(pid int, set *CPUSet) error {
return schedAffinity(SYS_SCHED_GETAFFINITY, pid, set)
}
// SchedSetaffinity sets the CPU affinity mask of the thread specified by pid.
// If pid is 0 the calling thread is used.
func SchedSetaffinity(pid int, set *CPUSet) error {
return schedAffinity(SYS_SCHED_SETAFFINITY, pid, set)
}
// Zero clears the set s, so that it contains no CPUs.
func (s *CPUSet) Zero() {
for i := range s {
s[i] = 0
}
}
func cpuBitsIndex(cpu int) int {
return cpu / _NCPUBITS
}
func cpuBitsMask(cpu int) cpuMask {
return cpuMask(1 << (uint(cpu) % _NCPUBITS))
}
// Set adds cpu to the set s.
func (s *CPUSet) Set(cpu int) {
i := cpuBitsIndex(cpu)
if i < len(s) {
s[i] |= cpuBitsMask(cpu)
}
}
// Clear removes cpu from the set s.
func (s *CPUSet) Clear(cpu int) {
i := cpuBitsIndex(cpu)
if i < len(s) {
s[i] &^= cpuBitsMask(cpu)
}
}
// IsSet reports whether cpu is in the set s.
func (s *CPUSet) IsSet(cpu int) bool {
i := cpuBitsIndex(cpu)
if i < len(s) {
return s[i]&cpuBitsMask(cpu) != 0
}
return false
}
// Count returns the number of CPUs in the set s.
func (s *CPUSet) Count() int {
c := 0
for _, b := range s {
c += bits.OnesCount64(uint64(b))
}
return c
}
+14
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@@ -0,0 +1,14 @@
// Copyright 2018 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.
// +build aix darwin dragonfly freebsd linux netbsd openbsd solaris
// +build go1.9
package unix
import "syscall"
type Signal = syscall.Signal
type Errno = syscall.Errno
type SysProcAttr = syscall.SysProcAttr
+17
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@@ -0,0 +1,17 @@
// Copyright 2018 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.
// +build !gccgo
#include "textflag.h"
//
// System calls for ppc64, AIX are implemented in runtime/syscall_aix.go
//
TEXT ·syscall6(SB),NOSPLIT,$0-88
JMP syscall·syscall6(SB)
TEXT ·rawSyscall6(SB),NOSPLIT,$0-88
JMP syscall·rawSyscall6(SB)
+29
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@@ -0,0 +1,29 @@
// Copyright 2009 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.
// +build !gccgo
#include "textflag.h"
//
// System call support for 386, Darwin
//
// Just jump to package syscall's implementation for all these functions.
// The runtime may know about them.
TEXT ·Syscall(SB),NOSPLIT,$0-28
JMP syscall·Syscall(SB)
TEXT ·Syscall6(SB),NOSPLIT,$0-40
JMP syscall·Syscall6(SB)
TEXT ·Syscall9(SB),NOSPLIT,$0-52
JMP syscall·Syscall9(SB)
TEXT ·RawSyscall(SB),NOSPLIT,$0-28
JMP syscall·RawSyscall(SB)
TEXT ·RawSyscall6(SB),NOSPLIT,$0-40
JMP syscall·RawSyscall6(SB)
+29
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@@ -0,0 +1,29 @@
// Copyright 2009 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.
// +build !gccgo
#include "textflag.h"
//
// System call support for AMD64, Darwin
//
// Just jump to package syscall's implementation for all these functions.
// The runtime may know about them.
TEXT ·Syscall(SB),NOSPLIT,$0-56
JMP syscall·Syscall(SB)
TEXT ·Syscall6(SB),NOSPLIT,$0-80
JMP syscall·Syscall6(SB)
TEXT ·Syscall9(SB),NOSPLIT,$0-104
JMP syscall·Syscall9(SB)
TEXT ·RawSyscall(SB),NOSPLIT,$0-56
JMP syscall·RawSyscall(SB)
TEXT ·RawSyscall6(SB),NOSPLIT,$0-80
JMP syscall·RawSyscall6(SB)
+30
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@@ -0,0 +1,30 @@
// Copyright 2015 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.
// +build !gccgo
// +build arm,darwin
#include "textflag.h"
//
// System call support for ARM, Darwin
//
// Just jump to package syscall's implementation for all these functions.
// The runtime may know about them.
TEXT ·Syscall(SB),NOSPLIT,$0-28
B syscall·Syscall(SB)
TEXT ·Syscall6(SB),NOSPLIT,$0-40
B syscall·Syscall6(SB)
TEXT ·Syscall9(SB),NOSPLIT,$0-52
B syscall·Syscall9(SB)
TEXT ·RawSyscall(SB),NOSPLIT,$0-28
B syscall·RawSyscall(SB)
TEXT ·RawSyscall6(SB),NOSPLIT,$0-40
B syscall·RawSyscall6(SB)
+30
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@@ -0,0 +1,30 @@
// Copyright 2015 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.
// +build !gccgo
// +build arm64,darwin
#include "textflag.h"
//
// System call support for AMD64, Darwin
//
// Just jump to package syscall's implementation for all these functions.
// The runtime may know about them.
TEXT ·Syscall(SB),NOSPLIT,$0-56
B syscall·Syscall(SB)
TEXT ·Syscall6(SB),NOSPLIT,$0-80
B syscall·Syscall6(SB)
TEXT ·Syscall9(SB),NOSPLIT,$0-104
B syscall·Syscall9(SB)
TEXT ·RawSyscall(SB),NOSPLIT,$0-56
B syscall·RawSyscall(SB)
TEXT ·RawSyscall6(SB),NOSPLIT,$0-80
B syscall·RawSyscall6(SB)
+29
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@@ -0,0 +1,29 @@
// Copyright 2009 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.
// +build !gccgo
#include "textflag.h"
//
// System call support for AMD64, DragonFly
//
// Just jump to package syscall's implementation for all these functions.
// The runtime may know about them.
TEXT ·Syscall(SB),NOSPLIT,$0-56
JMP syscall·Syscall(SB)
TEXT ·Syscall6(SB),NOSPLIT,$0-80
JMP syscall·Syscall6(SB)
TEXT ·Syscall9(SB),NOSPLIT,$0-104
JMP syscall·Syscall9(SB)
TEXT ·RawSyscall(SB),NOSPLIT,$0-56
JMP syscall·RawSyscall(SB)
TEXT ·RawSyscall6(SB),NOSPLIT,$0-80
JMP syscall·RawSyscall6(SB)
+29
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@@ -0,0 +1,29 @@
// Copyright 2009 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.
// +build !gccgo
#include "textflag.h"
//
// System call support for 386, FreeBSD
//
// Just jump to package syscall's implementation for all these functions.
// The runtime may know about them.
TEXT ·Syscall(SB),NOSPLIT,$0-28
JMP syscall·Syscall(SB)
TEXT ·Syscall6(SB),NOSPLIT,$0-40
JMP syscall·Syscall6(SB)
TEXT ·Syscall9(SB),NOSPLIT,$0-52
JMP syscall·Syscall9(SB)
TEXT ·RawSyscall(SB),NOSPLIT,$0-28
JMP syscall·RawSyscall(SB)
TEXT ·RawSyscall6(SB),NOSPLIT,$0-40
JMP syscall·RawSyscall6(SB)
+29
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@@ -0,0 +1,29 @@
// Copyright 2009 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.
// +build !gccgo
#include "textflag.h"
//
// System call support for AMD64, FreeBSD
//
// Just jump to package syscall's implementation for all these functions.
// The runtime may know about them.
TEXT ·Syscall(SB),NOSPLIT,$0-56
JMP syscall·Syscall(SB)
TEXT ·Syscall6(SB),NOSPLIT,$0-80
JMP syscall·Syscall6(SB)
TEXT ·Syscall9(SB),NOSPLIT,$0-104
JMP syscall·Syscall9(SB)
TEXT ·RawSyscall(SB),NOSPLIT,$0-56
JMP syscall·RawSyscall(SB)
TEXT ·RawSyscall6(SB),NOSPLIT,$0-80
JMP syscall·RawSyscall6(SB)
+29
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@@ -0,0 +1,29 @@
// Copyright 2012 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.
// +build !gccgo
#include "textflag.h"
//
// System call support for ARM, FreeBSD
//
// Just jump to package syscall's implementation for all these functions.
// The runtime may know about them.
TEXT ·Syscall(SB),NOSPLIT,$0-28
B syscall·Syscall(SB)
TEXT ·Syscall6(SB),NOSPLIT,$0-40
B syscall·Syscall6(SB)
TEXT ·Syscall9(SB),NOSPLIT,$0-52
B syscall·Syscall9(SB)
TEXT ·RawSyscall(SB),NOSPLIT,$0-28
B syscall·RawSyscall(SB)
TEXT ·RawSyscall6(SB),NOSPLIT,$0-40
B syscall·RawSyscall6(SB)
+29
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@@ -0,0 +1,29 @@
// Copyright 2018 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.
// +build !gccgo
#include "textflag.h"
//
// System call support for ARM64, FreeBSD
//
// Just jump to package syscall's implementation for all these functions.
// The runtime may know about them.
TEXT ·Syscall(SB),NOSPLIT,$0-56
JMP syscall·Syscall(SB)
TEXT ·Syscall6(SB),NOSPLIT,$0-80
JMP syscall·Syscall6(SB)
TEXT ·Syscall9(SB),NOSPLIT,$0-104
JMP syscall·Syscall9(SB)
TEXT ·RawSyscall(SB),NOSPLIT,$0-56
JMP syscall·RawSyscall(SB)
TEXT ·RawSyscall6(SB),NOSPLIT,$0-80
JMP syscall·RawSyscall6(SB)
+65
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@@ -0,0 +1,65 @@
// Copyright 2009 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.
// +build !gccgo
#include "textflag.h"
//
// System calls for 386, Linux
//
// See ../runtime/sys_linux_386.s for the reason why we always use int 0x80
// instead of the glibc-specific "CALL 0x10(GS)".
#define INVOKE_SYSCALL INT $0x80
// Just jump to package syscall's implementation for all these functions.
// The runtime may know about them.
TEXT ·Syscall(SB),NOSPLIT,$0-28
JMP syscall·Syscall(SB)
TEXT ·Syscall6(SB),NOSPLIT,$0-40
JMP syscall·Syscall6(SB)
TEXT ·SyscallNoError(SB),NOSPLIT,$0-24
CALL runtime·entersyscall(SB)
MOVL trap+0(FP), AX // syscall entry
MOVL a1+4(FP), BX
MOVL a2+8(FP), CX
MOVL a3+12(FP), DX
MOVL $0, SI
MOVL $0, DI
INVOKE_SYSCALL
MOVL AX, r1+16(FP)
MOVL DX, r2+20(FP)
CALL runtime·exitsyscall(SB)
RET
TEXT ·RawSyscall(SB),NOSPLIT,$0-28
JMP syscall·RawSyscall(SB)
TEXT ·RawSyscall6(SB),NOSPLIT,$0-40
JMP syscall·RawSyscall6(SB)
TEXT ·RawSyscallNoError(SB),NOSPLIT,$0-24
MOVL trap+0(FP), AX // syscall entry
MOVL a1+4(FP), BX
MOVL a2+8(FP), CX
MOVL a3+12(FP), DX
MOVL $0, SI
MOVL $0, DI
INVOKE_SYSCALL
MOVL AX, r1+16(FP)
MOVL DX, r2+20(FP)
RET
TEXT ·socketcall(SB),NOSPLIT,$0-36
JMP syscall·socketcall(SB)
TEXT ·rawsocketcall(SB),NOSPLIT,$0-36
JMP syscall·rawsocketcall(SB)
TEXT ·seek(SB),NOSPLIT,$0-28
JMP syscall·seek(SB)
+57
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@@ -0,0 +1,57 @@
// Copyright 2009 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.
// +build !gccgo
#include "textflag.h"
//
// System calls for AMD64, Linux
//
// Just jump to package syscall's implementation for all these functions.
// The runtime may know about them.
TEXT ·Syscall(SB),NOSPLIT,$0-56
JMP syscall·Syscall(SB)
TEXT ·Syscall6(SB),NOSPLIT,$0-80
JMP syscall·Syscall6(SB)
TEXT ·SyscallNoError(SB),NOSPLIT,$0-48
CALL runtime·entersyscall(SB)
MOVQ a1+8(FP), DI
MOVQ a2+16(FP), SI
MOVQ a3+24(FP), DX
MOVQ $0, R10
MOVQ $0, R8
MOVQ $0, R9
MOVQ trap+0(FP), AX // syscall entry
SYSCALL
MOVQ AX, r1+32(FP)
MOVQ DX, r2+40(FP)
CALL runtime·exitsyscall(SB)
RET
TEXT ·RawSyscall(SB),NOSPLIT,$0-56
JMP syscall·RawSyscall(SB)
TEXT ·RawSyscall6(SB),NOSPLIT,$0-80
JMP syscall·RawSyscall6(SB)
TEXT ·RawSyscallNoError(SB),NOSPLIT,$0-48
MOVQ a1+8(FP), DI
MOVQ a2+16(FP), SI
MOVQ a3+24(FP), DX
MOVQ $0, R10
MOVQ $0, R8
MOVQ $0, R9
MOVQ trap+0(FP), AX // syscall entry
SYSCALL
MOVQ AX, r1+32(FP)
MOVQ DX, r2+40(FP)
RET
TEXT ·gettimeofday(SB),NOSPLIT,$0-16
JMP syscall·gettimeofday(SB)
+56
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@@ -0,0 +1,56 @@
// Copyright 2009 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.
// +build !gccgo
#include "textflag.h"
//
// System calls for arm, Linux
//
// Just jump to package syscall's implementation for all these functions.
// The runtime may know about them.
TEXT ·Syscall(SB),NOSPLIT,$0-28
B syscall·Syscall(SB)
TEXT ·Syscall6(SB),NOSPLIT,$0-40
B syscall·Syscall6(SB)
TEXT ·SyscallNoError(SB),NOSPLIT,$0-24
BL runtime·entersyscall(SB)
MOVW trap+0(FP), R7
MOVW a1+4(FP), R0
MOVW a2+8(FP), R1
MOVW a3+12(FP), R2
MOVW $0, R3
MOVW $0, R4
MOVW $0, R5
SWI $0
MOVW R0, r1+16(FP)
MOVW $0, R0
MOVW R0, r2+20(FP)
BL runtime·exitsyscall(SB)
RET
TEXT ·RawSyscall(SB),NOSPLIT,$0-28
B syscall·RawSyscall(SB)
TEXT ·RawSyscall6(SB),NOSPLIT,$0-40
B syscall·RawSyscall6(SB)
TEXT ·RawSyscallNoError(SB),NOSPLIT,$0-24
MOVW trap+0(FP), R7 // syscall entry
MOVW a1+4(FP), R0
MOVW a2+8(FP), R1
MOVW a3+12(FP), R2
SWI $0
MOVW R0, r1+16(FP)
MOVW $0, R0
MOVW R0, r2+20(FP)
RET
TEXT ·seek(SB),NOSPLIT,$0-28
B syscall·seek(SB)
+52
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@@ -0,0 +1,52 @@
// Copyright 2015 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.
// +build linux
// +build arm64
// +build !gccgo
#include "textflag.h"
// Just jump to package syscall's implementation for all these functions.
// The runtime may know about them.
TEXT ·Syscall(SB),NOSPLIT,$0-56
B syscall·Syscall(SB)
TEXT ·Syscall6(SB),NOSPLIT,$0-80
B syscall·Syscall6(SB)
TEXT ·SyscallNoError(SB),NOSPLIT,$0-48
BL runtime·entersyscall(SB)
MOVD a1+8(FP), R0
MOVD a2+16(FP), R1
MOVD a3+24(FP), R2
MOVD $0, R3
MOVD $0, R4
MOVD $0, R5
MOVD trap+0(FP), R8 // syscall entry
SVC
MOVD R0, r1+32(FP) // r1
MOVD R1, r2+40(FP) // r2
BL runtime·exitsyscall(SB)
RET
TEXT ·RawSyscall(SB),NOSPLIT,$0-56
B syscall·RawSyscall(SB)
TEXT ·RawSyscall6(SB),NOSPLIT,$0-80
B syscall·RawSyscall6(SB)
TEXT ·RawSyscallNoError(SB),NOSPLIT,$0-48
MOVD a1+8(FP), R0
MOVD a2+16(FP), R1
MOVD a3+24(FP), R2
MOVD $0, R3
MOVD $0, R4
MOVD $0, R5
MOVD trap+0(FP), R8 // syscall entry
SVC
MOVD R0, r1+32(FP)
MOVD R1, r2+40(FP)
RET
+56
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@@ -0,0 +1,56 @@
// Copyright 2015 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.
// +build linux
// +build mips64 mips64le
// +build !gccgo
#include "textflag.h"
//
// System calls for mips64, Linux
//
// Just jump to package syscall's implementation for all these functions.
// The runtime may know about them.
TEXT ·Syscall(SB),NOSPLIT,$0-56
JMP syscall·Syscall(SB)
TEXT ·Syscall6(SB),NOSPLIT,$0-80
JMP syscall·Syscall6(SB)
TEXT ·SyscallNoError(SB),NOSPLIT,$0-48
JAL runtime·entersyscall(SB)
MOVV a1+8(FP), R4
MOVV a2+16(FP), R5
MOVV a3+24(FP), R6
MOVV R0, R7
MOVV R0, R8
MOVV R0, R9
MOVV trap+0(FP), R2 // syscall entry
SYSCALL
MOVV R2, r1+32(FP)
MOVV R3, r2+40(FP)
JAL runtime·exitsyscall(SB)
RET
TEXT ·RawSyscall(SB),NOSPLIT,$0-56
JMP syscall·RawSyscall(SB)
TEXT ·RawSyscall6(SB),NOSPLIT,$0-80
JMP syscall·RawSyscall6(SB)
TEXT ·RawSyscallNoError(SB),NOSPLIT,$0-48
MOVV a1+8(FP), R4
MOVV a2+16(FP), R5
MOVV a3+24(FP), R6
MOVV R0, R7
MOVV R0, R8
MOVV R0, R9
MOVV trap+0(FP), R2 // syscall entry
SYSCALL
MOVV R2, r1+32(FP)
MOVV R3, r2+40(FP)
RET
+54
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@@ -0,0 +1,54 @@
// Copyright 2016 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.
// +build linux
// +build mips mipsle
// +build !gccgo
#include "textflag.h"
//
// System calls for mips, Linux
//
// Just jump to package syscall's implementation for all these functions.
// The runtime may know about them.
TEXT ·Syscall(SB),NOSPLIT,$0-28
JMP syscall·Syscall(SB)
TEXT ·Syscall6(SB),NOSPLIT,$0-40
JMP syscall·Syscall6(SB)
TEXT ·Syscall9(SB),NOSPLIT,$0-52
JMP syscall·Syscall9(SB)
TEXT ·SyscallNoError(SB),NOSPLIT,$0-24
JAL runtime·entersyscall(SB)
MOVW a1+4(FP), R4
MOVW a2+8(FP), R5
MOVW a3+12(FP), R6
MOVW R0, R7
MOVW trap+0(FP), R2 // syscall entry
SYSCALL
MOVW R2, r1+16(FP) // r1
MOVW R3, r2+20(FP) // r2
JAL runtime·exitsyscall(SB)
RET
TEXT ·RawSyscall(SB),NOSPLIT,$0-28
JMP syscall·RawSyscall(SB)
TEXT ·RawSyscall6(SB),NOSPLIT,$0-40
JMP syscall·RawSyscall6(SB)
TEXT ·RawSyscallNoError(SB),NOSPLIT,$0-24
MOVW a1+4(FP), R4
MOVW a2+8(FP), R5
MOVW a3+12(FP), R6
MOVW trap+0(FP), R2 // syscall entry
SYSCALL
MOVW R2, r1+16(FP)
MOVW R3, r2+20(FP)
RET
+44
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@@ -0,0 +1,44 @@
// Copyright 2014 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.
// +build linux
// +build ppc64 ppc64le
// +build !gccgo
#include "textflag.h"
//
// System calls for ppc64, Linux
//
// Just jump to package syscall's implementation for all these functions.
// The runtime may know about them.
TEXT ·SyscallNoError(SB),NOSPLIT,$0-48
BL runtime·entersyscall(SB)
MOVD a1+8(FP), R3
MOVD a2+16(FP), R4
MOVD a3+24(FP), R5
MOVD R0, R6
MOVD R0, R7
MOVD R0, R8
MOVD trap+0(FP), R9 // syscall entry
SYSCALL R9
MOVD R3, r1+32(FP)
MOVD R4, r2+40(FP)
BL runtime·exitsyscall(SB)
RET
TEXT ·RawSyscallNoError(SB),NOSPLIT,$0-48
MOVD a1+8(FP), R3
MOVD a2+16(FP), R4
MOVD a3+24(FP), R5
MOVD R0, R6
MOVD R0, R7
MOVD R0, R8
MOVD trap+0(FP), R9 // syscall entry
SYSCALL R9
MOVD R3, r1+32(FP)
MOVD R4, r2+40(FP)
RET
+47
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@@ -0,0 +1,47 @@
// Copyright 2019 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.
// +build riscv64,!gccgo
#include "textflag.h"
//
// System calls for linux/riscv64.
//
// Where available, just jump to package syscall's implementation of
// these functions.
TEXT ·Syscall(SB),NOSPLIT,$0-56
JMP syscall·Syscall(SB)
TEXT ·Syscall6(SB),NOSPLIT,$0-80
JMP syscall·Syscall6(SB)
TEXT ·SyscallNoError(SB),NOSPLIT,$0-48
CALL runtime·entersyscall(SB)
MOV a1+8(FP), A0
MOV a2+16(FP), A1
MOV a3+24(FP), A2
MOV trap+0(FP), A7 // syscall entry
ECALL
MOV A0, r1+32(FP) // r1
MOV A1, r2+40(FP) // r2
CALL runtime·exitsyscall(SB)
RET
TEXT ·RawSyscall(SB),NOSPLIT,$0-56
JMP syscall·RawSyscall(SB)
TEXT ·RawSyscall6(SB),NOSPLIT,$0-80
JMP syscall·RawSyscall6(SB)
TEXT ·RawSyscallNoError(SB),NOSPLIT,$0-48
MOV a1+8(FP), A0
MOV a2+16(FP), A1
MOV a3+24(FP), A2
MOV trap+0(FP), A7 // syscall entry
ECALL
MOV A0, r1+32(FP)
MOV A1, r2+40(FP)
RET
+56
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@@ -0,0 +1,56 @@
// Copyright 2016 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.
// +build s390x
// +build linux
// +build !gccgo
#include "textflag.h"
//
// System calls for s390x, Linux
//
// Just jump to package syscall's implementation for all these functions.
// The runtime may know about them.
TEXT ·Syscall(SB),NOSPLIT,$0-56
BR syscall·Syscall(SB)
TEXT ·Syscall6(SB),NOSPLIT,$0-80
BR syscall·Syscall6(SB)
TEXT ·SyscallNoError(SB),NOSPLIT,$0-48
BL runtime·entersyscall(SB)
MOVD a1+8(FP), R2
MOVD a2+16(FP), R3
MOVD a3+24(FP), R4
MOVD $0, R5
MOVD $0, R6
MOVD $0, R7
MOVD trap+0(FP), R1 // syscall entry
SYSCALL
MOVD R2, r1+32(FP)
MOVD R3, r2+40(FP)
BL runtime·exitsyscall(SB)
RET
TEXT ·RawSyscall(SB),NOSPLIT,$0-56
BR syscall·RawSyscall(SB)
TEXT ·RawSyscall6(SB),NOSPLIT,$0-80
BR syscall·RawSyscall6(SB)
TEXT ·RawSyscallNoError(SB),NOSPLIT,$0-48
MOVD a1+8(FP), R2
MOVD a2+16(FP), R3
MOVD a3+24(FP), R4
MOVD $0, R5
MOVD $0, R6
MOVD $0, R7
MOVD trap+0(FP), R1 // syscall entry
SYSCALL
MOVD R2, r1+32(FP)
MOVD R3, r2+40(FP)
RET
+29
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@@ -0,0 +1,29 @@
// Copyright 2009 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.
// +build !gccgo
#include "textflag.h"
//
// System call support for 386, NetBSD
//
// Just jump to package syscall's implementation for all these functions.
// The runtime may know about them.
TEXT ·Syscall(SB),NOSPLIT,$0-28
JMP syscall·Syscall(SB)
TEXT ·Syscall6(SB),NOSPLIT,$0-40
JMP syscall·Syscall6(SB)
TEXT ·Syscall9(SB),NOSPLIT,$0-52
JMP syscall·Syscall9(SB)
TEXT ·RawSyscall(SB),NOSPLIT,$0-28
JMP syscall·RawSyscall(SB)
TEXT ·RawSyscall6(SB),NOSPLIT,$0-40
JMP syscall·RawSyscall6(SB)
+29
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@@ -0,0 +1,29 @@
// Copyright 2009 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.
// +build !gccgo
#include "textflag.h"
//
// System call support for AMD64, NetBSD
//
// Just jump to package syscall's implementation for all these functions.
// The runtime may know about them.
TEXT ·Syscall(SB),NOSPLIT,$0-56
JMP syscall·Syscall(SB)
TEXT ·Syscall6(SB),NOSPLIT,$0-80
JMP syscall·Syscall6(SB)
TEXT ·Syscall9(SB),NOSPLIT,$0-104
JMP syscall·Syscall9(SB)
TEXT ·RawSyscall(SB),NOSPLIT,$0-56
JMP syscall·RawSyscall(SB)
TEXT ·RawSyscall6(SB),NOSPLIT,$0-80
JMP syscall·RawSyscall6(SB)
+29
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@@ -0,0 +1,29 @@
// Copyright 2013 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.
// +build !gccgo
#include "textflag.h"
//
// System call support for ARM, NetBSD
//
// Just jump to package syscall's implementation for all these functions.
// The runtime may know about them.
TEXT ·Syscall(SB),NOSPLIT,$0-28
B syscall·Syscall(SB)
TEXT ·Syscall6(SB),NOSPLIT,$0-40
B syscall·Syscall6(SB)
TEXT ·Syscall9(SB),NOSPLIT,$0-52
B syscall·Syscall9(SB)
TEXT ·RawSyscall(SB),NOSPLIT,$0-28
B syscall·RawSyscall(SB)
TEXT ·RawSyscall6(SB),NOSPLIT,$0-40
B syscall·RawSyscall6(SB)
+29
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// Copyright 2019 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.
// +build !gccgo
#include "textflag.h"
//
// System call support for ARM64, NetBSD
//
// Just jump to package syscall's implementation for all these functions.
// The runtime may know about them.
TEXT ·Syscall(SB),NOSPLIT,$0-56
B syscall·Syscall(SB)
TEXT ·Syscall6(SB),NOSPLIT,$0-80
B syscall·Syscall6(SB)
TEXT ·Syscall9(SB),NOSPLIT,$0-104
B syscall·Syscall9(SB)
TEXT ·RawSyscall(SB),NOSPLIT,$0-56
B syscall·RawSyscall(SB)
TEXT ·RawSyscall6(SB),NOSPLIT,$0-80
B syscall·RawSyscall6(SB)
+29
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// Copyright 2009 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.
// +build !gccgo
#include "textflag.h"
//
// System call support for 386, OpenBSD
//
// Just jump to package syscall's implementation for all these functions.
// The runtime may know about them.
TEXT ·Syscall(SB),NOSPLIT,$0-28
JMP syscall·Syscall(SB)
TEXT ·Syscall6(SB),NOSPLIT,$0-40
JMP syscall·Syscall6(SB)
TEXT ·Syscall9(SB),NOSPLIT,$0-52
JMP syscall·Syscall9(SB)
TEXT ·RawSyscall(SB),NOSPLIT,$0-28
JMP syscall·RawSyscall(SB)
TEXT ·RawSyscall6(SB),NOSPLIT,$0-40
JMP syscall·RawSyscall6(SB)
+29
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// Copyright 2009 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.
// +build !gccgo
#include "textflag.h"
//
// System call support for AMD64, OpenBSD
//
// Just jump to package syscall's implementation for all these functions.
// The runtime may know about them.
TEXT ·Syscall(SB),NOSPLIT,$0-56
JMP syscall·Syscall(SB)
TEXT ·Syscall6(SB),NOSPLIT,$0-80
JMP syscall·Syscall6(SB)
TEXT ·Syscall9(SB),NOSPLIT,$0-104
JMP syscall·Syscall9(SB)
TEXT ·RawSyscall(SB),NOSPLIT,$0-56
JMP syscall·RawSyscall(SB)
TEXT ·RawSyscall6(SB),NOSPLIT,$0-80
JMP syscall·RawSyscall6(SB)
+29
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// Copyright 2017 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.
// +build !gccgo
#include "textflag.h"
//
// System call support for ARM, OpenBSD
//
// Just jump to package syscall's implementation for all these functions.
// The runtime may know about them.
TEXT ·Syscall(SB),NOSPLIT,$0-28
B syscall·Syscall(SB)
TEXT ·Syscall6(SB),NOSPLIT,$0-40
B syscall·Syscall6(SB)
TEXT ·Syscall9(SB),NOSPLIT,$0-52
B syscall·Syscall9(SB)
TEXT ·RawSyscall(SB),NOSPLIT,$0-28
B syscall·RawSyscall(SB)
TEXT ·RawSyscall6(SB),NOSPLIT,$0-40
B syscall·RawSyscall6(SB)
+29
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// Copyright 2019 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.
// +build !gccgo
#include "textflag.h"
//
// System call support for arm64, OpenBSD
//
// Just jump to package syscall's implementation for all these functions.
// The runtime may know about them.
TEXT ·Syscall(SB),NOSPLIT,$0-56
JMP syscall·Syscall(SB)
TEXT ·Syscall6(SB),NOSPLIT,$0-80
JMP syscall·Syscall6(SB)
TEXT ·Syscall9(SB),NOSPLIT,$0-104
JMP syscall·Syscall9(SB)
TEXT ·RawSyscall(SB),NOSPLIT,$0-56
JMP syscall·RawSyscall(SB)
TEXT ·RawSyscall6(SB),NOSPLIT,$0-80
JMP syscall·RawSyscall6(SB)
+17
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// Copyright 2014 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.
// +build !gccgo
#include "textflag.h"
//
// System calls for amd64, Solaris are implemented in runtime/syscall_solaris.go
//
TEXT ·sysvicall6(SB),NOSPLIT,$0-88
JMP syscall·sysvicall6(SB)
TEXT ·rawSysvicall6(SB),NOSPLIT,$0-88
JMP syscall·rawSysvicall6(SB)
+36
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// Copyright 2016 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.
// Bluetooth sockets and messages
package unix
// Bluetooth Protocols
const (
BTPROTO_L2CAP = 0
BTPROTO_HCI = 1
BTPROTO_SCO = 2
BTPROTO_RFCOMM = 3
BTPROTO_BNEP = 4
BTPROTO_CMTP = 5
BTPROTO_HIDP = 6
BTPROTO_AVDTP = 7
)
const (
HCI_CHANNEL_RAW = 0
HCI_CHANNEL_USER = 1
HCI_CHANNEL_MONITOR = 2
HCI_CHANNEL_CONTROL = 3
HCI_CHANNEL_LOGGING = 4
)
// Socketoption Level
const (
SOL_BLUETOOTH = 0x112
SOL_HCI = 0x0
SOL_L2CAP = 0x6
SOL_RFCOMM = 0x12
SOL_SCO = 0x11
)
+195
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// Copyright 2017 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.
// +build freebsd
package unix
import (
"errors"
"fmt"
)
// Go implementation of C mostly found in /usr/src/sys/kern/subr_capability.c
const (
// This is the version of CapRights this package understands. See C implementation for parallels.
capRightsGoVersion = CAP_RIGHTS_VERSION_00
capArSizeMin = CAP_RIGHTS_VERSION_00 + 2
capArSizeMax = capRightsGoVersion + 2
)
var (
bit2idx = []int{
-1, 0, 1, -1, 2, -1, -1, -1, 3, -1, -1, -1, -1, -1, -1, -1,
4, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
}
)
func capidxbit(right uint64) int {
return int((right >> 57) & 0x1f)
}
func rightToIndex(right uint64) (int, error) {
idx := capidxbit(right)
if idx < 0 || idx >= len(bit2idx) {
return -2, fmt.Errorf("index for right 0x%x out of range", right)
}
return bit2idx[idx], nil
}
func caprver(right uint64) int {
return int(right >> 62)
}
func capver(rights *CapRights) int {
return caprver(rights.Rights[0])
}
func caparsize(rights *CapRights) int {
return capver(rights) + 2
}
// CapRightsSet sets the permissions in setrights in rights.
func CapRightsSet(rights *CapRights, setrights []uint64) error {
// This is essentially a copy of cap_rights_vset()
if capver(rights) != CAP_RIGHTS_VERSION_00 {
return fmt.Errorf("bad rights version %d", capver(rights))
}
n := caparsize(rights)
if n < capArSizeMin || n > capArSizeMax {
return errors.New("bad rights size")
}
for _, right := range setrights {
if caprver(right) != CAP_RIGHTS_VERSION_00 {
return errors.New("bad right version")
}
i, err := rightToIndex(right)
if err != nil {
return err
}
if i >= n {
return errors.New("index overflow")
}
if capidxbit(rights.Rights[i]) != capidxbit(right) {
return errors.New("index mismatch")
}
rights.Rights[i] |= right
if capidxbit(rights.Rights[i]) != capidxbit(right) {
return errors.New("index mismatch (after assign)")
}
}
return nil
}
// CapRightsClear clears the permissions in clearrights from rights.
func CapRightsClear(rights *CapRights, clearrights []uint64) error {
// This is essentially a copy of cap_rights_vclear()
if capver(rights) != CAP_RIGHTS_VERSION_00 {
return fmt.Errorf("bad rights version %d", capver(rights))
}
n := caparsize(rights)
if n < capArSizeMin || n > capArSizeMax {
return errors.New("bad rights size")
}
for _, right := range clearrights {
if caprver(right) != CAP_RIGHTS_VERSION_00 {
return errors.New("bad right version")
}
i, err := rightToIndex(right)
if err != nil {
return err
}
if i >= n {
return errors.New("index overflow")
}
if capidxbit(rights.Rights[i]) != capidxbit(right) {
return errors.New("index mismatch")
}
rights.Rights[i] &= ^(right & 0x01FFFFFFFFFFFFFF)
if capidxbit(rights.Rights[i]) != capidxbit(right) {
return errors.New("index mismatch (after assign)")
}
}
return nil
}
// CapRightsIsSet checks whether all the permissions in setrights are present in rights.
func CapRightsIsSet(rights *CapRights, setrights []uint64) (bool, error) {
// This is essentially a copy of cap_rights_is_vset()
if capver(rights) != CAP_RIGHTS_VERSION_00 {
return false, fmt.Errorf("bad rights version %d", capver(rights))
}
n := caparsize(rights)
if n < capArSizeMin || n > capArSizeMax {
return false, errors.New("bad rights size")
}
for _, right := range setrights {
if caprver(right) != CAP_RIGHTS_VERSION_00 {
return false, errors.New("bad right version")
}
i, err := rightToIndex(right)
if err != nil {
return false, err
}
if i >= n {
return false, errors.New("index overflow")
}
if capidxbit(rights.Rights[i]) != capidxbit(right) {
return false, errors.New("index mismatch")
}
if (rights.Rights[i] & right) != right {
return false, nil
}
}
return true, nil
}
func capright(idx uint64, bit uint64) uint64 {
return ((1 << (57 + idx)) | bit)
}
// CapRightsInit returns a pointer to an initialised CapRights structure filled with rights.
// See man cap_rights_init(3) and rights(4).
func CapRightsInit(rights []uint64) (*CapRights, error) {
var r CapRights
r.Rights[0] = (capRightsGoVersion << 62) | capright(0, 0)
r.Rights[1] = capright(1, 0)
err := CapRightsSet(&r, rights)
if err != nil {
return nil, err
}
return &r, nil
}
// CapRightsLimit reduces the operations permitted on fd to at most those contained in rights.
// The capability rights on fd can never be increased by CapRightsLimit.
// See man cap_rights_limit(2) and rights(4).
func CapRightsLimit(fd uintptr, rights *CapRights) error {
return capRightsLimit(int(fd), rights)
}
// CapRightsGet returns a CapRights structure containing the operations permitted on fd.
// See man cap_rights_get(3) and rights(4).
func CapRightsGet(fd uintptr) (*CapRights, error) {
r, err := CapRightsInit(nil)
if err != nil {
return nil, err
}
err = capRightsGet(capRightsGoVersion, int(fd), r)
if err != nil {
return nil, err
}
return r, nil
}
+13
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// Copyright 2015 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.
// +build aix darwin dragonfly freebsd linux netbsd openbsd solaris
package unix
const (
R_OK = 0x4
W_OK = 0x2
X_OK = 0x1
)
+27
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// Copyright 2018 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.
// +build aix
// +build ppc
// Functions to access/create device major and minor numbers matching the
// encoding used by AIX.
package unix
// Major returns the major component of a Linux device number.
func Major(dev uint64) uint32 {
return uint32((dev >> 16) & 0xffff)
}
// Minor returns the minor component of a Linux device number.
func Minor(dev uint64) uint32 {
return uint32(dev & 0xffff)
}
// Mkdev returns a Linux device number generated from the given major and minor
// components.
func Mkdev(major, minor uint32) uint64 {
return uint64(((major) << 16) | (minor))
}
+29
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// Copyright 2018 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.
// +build aix
// +build ppc64
// Functions to access/create device major and minor numbers matching the
// encoding used AIX.
package unix
// Major returns the major component of a Linux device number.
func Major(dev uint64) uint32 {
return uint32((dev & 0x3fffffff00000000) >> 32)
}
// Minor returns the minor component of a Linux device number.
func Minor(dev uint64) uint32 {
return uint32((dev & 0x00000000ffffffff) >> 0)
}
// Mkdev returns a Linux device number generated from the given major and minor
// components.
func Mkdev(major, minor uint32) uint64 {
var DEVNO64 uint64
DEVNO64 = 0x8000000000000000
return ((uint64(major) << 32) | (uint64(minor) & 0x00000000FFFFFFFF) | DEVNO64)
}
+24
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// Copyright 2017 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.
// Functions to access/create device major and minor numbers matching the
// encoding used in Darwin's sys/types.h header.
package unix
// Major returns the major component of a Darwin device number.
func Major(dev uint64) uint32 {
return uint32((dev >> 24) & 0xff)
}
// Minor returns the minor component of a Darwin device number.
func Minor(dev uint64) uint32 {
return uint32(dev & 0xffffff)
}
// Mkdev returns a Darwin device number generated from the given major and minor
// components.
func Mkdev(major, minor uint32) uint64 {
return (uint64(major) << 24) | uint64(minor)
}
+30
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// Copyright 2017 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.
// Functions to access/create device major and minor numbers matching the
// encoding used in Dragonfly's sys/types.h header.
//
// The information below is extracted and adapted from sys/types.h:
//
// Minor gives a cookie instead of an index since in order to avoid changing the
// meanings of bits 0-15 or wasting time and space shifting bits 16-31 for
// devices that don't use them.
package unix
// Major returns the major component of a DragonFlyBSD device number.
func Major(dev uint64) uint32 {
return uint32((dev >> 8) & 0xff)
}
// Minor returns the minor component of a DragonFlyBSD device number.
func Minor(dev uint64) uint32 {
return uint32(dev & 0xffff00ff)
}
// Mkdev returns a DragonFlyBSD device number generated from the given major and
// minor components.
func Mkdev(major, minor uint32) uint64 {
return (uint64(major) << 8) | uint64(minor)
}
+30
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// Copyright 2017 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.
// Functions to access/create device major and minor numbers matching the
// encoding used in FreeBSD's sys/types.h header.
//
// The information below is extracted and adapted from sys/types.h:
//
// Minor gives a cookie instead of an index since in order to avoid changing the
// meanings of bits 0-15 or wasting time and space shifting bits 16-31 for
// devices that don't use them.
package unix
// Major returns the major component of a FreeBSD device number.
func Major(dev uint64) uint32 {
return uint32((dev >> 8) & 0xff)
}
// Minor returns the minor component of a FreeBSD device number.
func Minor(dev uint64) uint32 {
return uint32(dev & 0xffff00ff)
}
// Mkdev returns a FreeBSD device number generated from the given major and
// minor components.
func Mkdev(major, minor uint32) uint64 {
return (uint64(major) << 8) | uint64(minor)
}
+42
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// Copyright 2017 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.
// Functions to access/create device major and minor numbers matching the
// encoding used by the Linux kernel and glibc.
//
// The information below is extracted and adapted from bits/sysmacros.h in the
// glibc sources:
//
// dev_t in glibc is 64-bit, with 32-bit major and minor numbers. glibc's
// default encoding is MMMM Mmmm mmmM MMmm, where M is a hex digit of the major
// number and m is a hex digit of the minor number. This is backward compatible
// with legacy systems where dev_t is 16 bits wide, encoded as MMmm. It is also
// backward compatible with the Linux kernel, which for some architectures uses
// 32-bit dev_t, encoded as mmmM MMmm.
package unix
// Major returns the major component of a Linux device number.
func Major(dev uint64) uint32 {
major := uint32((dev & 0x00000000000fff00) >> 8)
major |= uint32((dev & 0xfffff00000000000) >> 32)
return major
}
// Minor returns the minor component of a Linux device number.
func Minor(dev uint64) uint32 {
minor := uint32((dev & 0x00000000000000ff) >> 0)
minor |= uint32((dev & 0x00000ffffff00000) >> 12)
return minor
}
// Mkdev returns a Linux device number generated from the given major and minor
// components.
func Mkdev(major, minor uint32) uint64 {
dev := (uint64(major) & 0x00000fff) << 8
dev |= (uint64(major) & 0xfffff000) << 32
dev |= (uint64(minor) & 0x000000ff) << 0
dev |= (uint64(minor) & 0xffffff00) << 12
return dev
}
+29
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// Copyright 2017 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.
// Functions to access/create device major and minor numbers matching the
// encoding used in NetBSD's sys/types.h header.
package unix
// Major returns the major component of a NetBSD device number.
func Major(dev uint64) uint32 {
return uint32((dev & 0x000fff00) >> 8)
}
// Minor returns the minor component of a NetBSD device number.
func Minor(dev uint64) uint32 {
minor := uint32((dev & 0x000000ff) >> 0)
minor |= uint32((dev & 0xfff00000) >> 12)
return minor
}
// Mkdev returns a NetBSD device number generated from the given major and minor
// components.
func Mkdev(major, minor uint32) uint64 {
dev := (uint64(major) << 8) & 0x000fff00
dev |= (uint64(minor) << 12) & 0xfff00000
dev |= (uint64(minor) << 0) & 0x000000ff
return dev
}
+29
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// Copyright 2017 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.
// Functions to access/create device major and minor numbers matching the
// encoding used in OpenBSD's sys/types.h header.
package unix
// Major returns the major component of an OpenBSD device number.
func Major(dev uint64) uint32 {
return uint32((dev & 0x0000ff00) >> 8)
}
// Minor returns the minor component of an OpenBSD device number.
func Minor(dev uint64) uint32 {
minor := uint32((dev & 0x000000ff) >> 0)
minor |= uint32((dev & 0xffff0000) >> 8)
return minor
}
// Mkdev returns an OpenBSD device number generated from the given major and minor
// components.
func Mkdev(major, minor uint32) uint64 {
dev := (uint64(major) << 8) & 0x0000ff00
dev |= (uint64(minor) << 8) & 0xffff0000
dev |= (uint64(minor) << 0) & 0x000000ff
return dev
}
+102
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// Copyright 2009 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.
// +build aix darwin dragonfly freebsd linux netbsd openbsd solaris
package unix
import "unsafe"
// readInt returns the size-bytes unsigned integer in native byte order at offset off.
func readInt(b []byte, off, size uintptr) (u uint64, ok bool) {
if len(b) < int(off+size) {
return 0, false
}
if isBigEndian {
return readIntBE(b[off:], size), true
}
return readIntLE(b[off:], size), true
}
func readIntBE(b []byte, size uintptr) uint64 {
switch size {
case 1:
return uint64(b[0])
case 2:
_ = b[1] // bounds check hint to compiler; see golang.org/issue/14808
return uint64(b[1]) | uint64(b[0])<<8
case 4:
_ = b[3] // bounds check hint to compiler; see golang.org/issue/14808
return uint64(b[3]) | uint64(b[2])<<8 | uint64(b[1])<<16 | uint64(b[0])<<24
case 8:
_ = b[7] // bounds check hint to compiler; see golang.org/issue/14808
return uint64(b[7]) | uint64(b[6])<<8 | uint64(b[5])<<16 | uint64(b[4])<<24 |
uint64(b[3])<<32 | uint64(b[2])<<40 | uint64(b[1])<<48 | uint64(b[0])<<56
default:
panic("syscall: readInt with unsupported size")
}
}
func readIntLE(b []byte, size uintptr) uint64 {
switch size {
case 1:
return uint64(b[0])
case 2:
_ = b[1] // bounds check hint to compiler; see golang.org/issue/14808
return uint64(b[0]) | uint64(b[1])<<8
case 4:
_ = b[3] // bounds check hint to compiler; see golang.org/issue/14808
return uint64(b[0]) | uint64(b[1])<<8 | uint64(b[2])<<16 | uint64(b[3])<<24
case 8:
_ = b[7] // bounds check hint to compiler; see golang.org/issue/14808
return uint64(b[0]) | uint64(b[1])<<8 | uint64(b[2])<<16 | uint64(b[3])<<24 |
uint64(b[4])<<32 | uint64(b[5])<<40 | uint64(b[6])<<48 | uint64(b[7])<<56
default:
panic("syscall: readInt with unsupported size")
}
}
// ParseDirent parses up to max directory entries in buf,
// appending the names to names. It returns the number of
// bytes consumed from buf, the number of entries added
// to names, and the new names slice.
func ParseDirent(buf []byte, max int, names []string) (consumed int, count int, newnames []string) {
origlen := len(buf)
count = 0
for max != 0 && len(buf) > 0 {
reclen, ok := direntReclen(buf)
if !ok || reclen > uint64(len(buf)) {
return origlen, count, names
}
rec := buf[:reclen]
buf = buf[reclen:]
ino, ok := direntIno(rec)
if !ok {
break
}
if ino == 0 { // File absent in directory.
continue
}
const namoff = uint64(unsafe.Offsetof(Dirent{}.Name))
namlen, ok := direntNamlen(rec)
if !ok || namoff+namlen > uint64(len(rec)) {
break
}
name := rec[namoff : namoff+namlen]
for i, c := range name {
if c == 0 {
name = name[:i]
break
}
}
// Check for useless names before allocating a string.
if string(name) == "." || string(name) == ".." {
continue
}
max--
count++
names = append(names, string(name))
}
return origlen - len(buf), count, names
}
+9
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// Copyright 2016 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.
//
// +build ppc64 s390x mips mips64
package unix
const isBigEndian = true
+9
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@@ -0,0 +1,9 @@
// Copyright 2016 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.
//
// +build 386 amd64 amd64p32 arm arm64 ppc64le mipsle mips64le riscv64
package unix
const isBigEndian = false
+31
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@@ -0,0 +1,31 @@
// Copyright 2010 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.
// +build aix darwin dragonfly freebsd linux netbsd openbsd solaris
// Unix environment variables.
package unix
import "syscall"
func Getenv(key string) (value string, found bool) {
return syscall.Getenv(key)
}
func Setenv(key, value string) error {
return syscall.Setenv(key, value)
}
func Clearenv() {
syscall.Clearenv()
}
func Environ() []string {
return syscall.Environ()
}
func Unsetenv(key string) error {
return syscall.Unsetenv(key)
}
+233
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// Copyright 2017 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.
// Constants that were deprecated or moved to enums in the FreeBSD headers. Keep
// them here for backwards compatibility.
package unix
const (
DLT_HHDLC = 0x79
IFF_SMART = 0x20
IFT_1822 = 0x2
IFT_A12MPPSWITCH = 0x82
IFT_AAL2 = 0xbb
IFT_AAL5 = 0x31
IFT_ADSL = 0x5e
IFT_AFLANE8023 = 0x3b
IFT_AFLANE8025 = 0x3c
IFT_ARAP = 0x58
IFT_ARCNET = 0x23
IFT_ARCNETPLUS = 0x24
IFT_ASYNC = 0x54
IFT_ATM = 0x25
IFT_ATMDXI = 0x69
IFT_ATMFUNI = 0x6a
IFT_ATMIMA = 0x6b
IFT_ATMLOGICAL = 0x50
IFT_ATMRADIO = 0xbd
IFT_ATMSUBINTERFACE = 0x86
IFT_ATMVCIENDPT = 0xc2
IFT_ATMVIRTUAL = 0x95
IFT_BGPPOLICYACCOUNTING = 0xa2
IFT_BSC = 0x53
IFT_CCTEMUL = 0x3d
IFT_CEPT = 0x13
IFT_CES = 0x85
IFT_CHANNEL = 0x46
IFT_CNR = 0x55
IFT_COFFEE = 0x84
IFT_COMPOSITELINK = 0x9b
IFT_DCN = 0x8d
IFT_DIGITALPOWERLINE = 0x8a
IFT_DIGITALWRAPPEROVERHEADCHANNEL = 0xba
IFT_DLSW = 0x4a
IFT_DOCSCABLEDOWNSTREAM = 0x80
IFT_DOCSCABLEMACLAYER = 0x7f
IFT_DOCSCABLEUPSTREAM = 0x81
IFT_DS0 = 0x51
IFT_DS0BUNDLE = 0x52
IFT_DS1FDL = 0xaa
IFT_DS3 = 0x1e
IFT_DTM = 0x8c
IFT_DVBASILN = 0xac
IFT_DVBASIOUT = 0xad
IFT_DVBRCCDOWNSTREAM = 0x93
IFT_DVBRCCMACLAYER = 0x92
IFT_DVBRCCUPSTREAM = 0x94
IFT_ENC = 0xf4
IFT_EON = 0x19
IFT_EPLRS = 0x57
IFT_ESCON = 0x49
IFT_ETHER = 0x6
IFT_FAITH = 0xf2
IFT_FAST = 0x7d
IFT_FASTETHER = 0x3e
IFT_FASTETHERFX = 0x45
IFT_FDDI = 0xf
IFT_FIBRECHANNEL = 0x38
IFT_FRAMERELAYINTERCONNECT = 0x3a
IFT_FRAMERELAYMPI = 0x5c
IFT_FRDLCIENDPT = 0xc1
IFT_FRELAY = 0x20
IFT_FRELAYDCE = 0x2c
IFT_FRF16MFRBUNDLE = 0xa3
IFT_FRFORWARD = 0x9e
IFT_G703AT2MB = 0x43
IFT_G703AT64K = 0x42
IFT_GIF = 0xf0
IFT_GIGABITETHERNET = 0x75
IFT_GR303IDT = 0xb2
IFT_GR303RDT = 0xb1
IFT_H323GATEKEEPER = 0xa4
IFT_H323PROXY = 0xa5
IFT_HDH1822 = 0x3
IFT_HDLC = 0x76
IFT_HDSL2 = 0xa8
IFT_HIPERLAN2 = 0xb7
IFT_HIPPI = 0x2f
IFT_HIPPIINTERFACE = 0x39
IFT_HOSTPAD = 0x5a
IFT_HSSI = 0x2e
IFT_HY = 0xe
IFT_IBM370PARCHAN = 0x48
IFT_IDSL = 0x9a
IFT_IEEE80211 = 0x47
IFT_IEEE80212 = 0x37
IFT_IEEE8023ADLAG = 0xa1
IFT_IFGSN = 0x91
IFT_IMT = 0xbe
IFT_INTERLEAVE = 0x7c
IFT_IP = 0x7e
IFT_IPFORWARD = 0x8e
IFT_IPOVERATM = 0x72
IFT_IPOVERCDLC = 0x6d
IFT_IPOVERCLAW = 0x6e
IFT_IPSWITCH = 0x4e
IFT_IPXIP = 0xf9
IFT_ISDN = 0x3f
IFT_ISDNBASIC = 0x14
IFT_ISDNPRIMARY = 0x15
IFT_ISDNS = 0x4b
IFT_ISDNU = 0x4c
IFT_ISO88022LLC = 0x29
IFT_ISO88023 = 0x7
IFT_ISO88024 = 0x8
IFT_ISO88025 = 0x9
IFT_ISO88025CRFPINT = 0x62
IFT_ISO88025DTR = 0x56
IFT_ISO88025FIBER = 0x73
IFT_ISO88026 = 0xa
IFT_ISUP = 0xb3
IFT_L3IPXVLAN = 0x89
IFT_LAPB = 0x10
IFT_LAPD = 0x4d
IFT_LAPF = 0x77
IFT_LOCALTALK = 0x2a
IFT_LOOP = 0x18
IFT_MEDIAMAILOVERIP = 0x8b
IFT_MFSIGLINK = 0xa7
IFT_MIOX25 = 0x26
IFT_MODEM = 0x30
IFT_MPC = 0x71
IFT_MPLS = 0xa6
IFT_MPLSTUNNEL = 0x96
IFT_MSDSL = 0x8f
IFT_MVL = 0xbf
IFT_MYRINET = 0x63
IFT_NFAS = 0xaf
IFT_NSIP = 0x1b
IFT_OPTICALCHANNEL = 0xc3
IFT_OPTICALTRANSPORT = 0xc4
IFT_OTHER = 0x1
IFT_P10 = 0xc
IFT_P80 = 0xd
IFT_PARA = 0x22
IFT_PFLOG = 0xf6
IFT_PFSYNC = 0xf7
IFT_PLC = 0xae
IFT_POS = 0xab
IFT_PPPMULTILINKBUNDLE = 0x6c
IFT_PROPBWAP2MP = 0xb8
IFT_PROPCNLS = 0x59
IFT_PROPDOCSWIRELESSDOWNSTREAM = 0xb5
IFT_PROPDOCSWIRELESSMACLAYER = 0xb4
IFT_PROPDOCSWIRELESSUPSTREAM = 0xb6
IFT_PROPMUX = 0x36
IFT_PROPWIRELESSP2P = 0x9d
IFT_PTPSERIAL = 0x16
IFT_PVC = 0xf1
IFT_QLLC = 0x44
IFT_RADIOMAC = 0xbc
IFT_RADSL = 0x5f
IFT_REACHDSL = 0xc0
IFT_RFC1483 = 0x9f
IFT_RS232 = 0x21
IFT_RSRB = 0x4f
IFT_SDLC = 0x11
IFT_SDSL = 0x60
IFT_SHDSL = 0xa9
IFT_SIP = 0x1f
IFT_SLIP = 0x1c
IFT_SMDSDXI = 0x2b
IFT_SMDSICIP = 0x34
IFT_SONET = 0x27
IFT_SONETOVERHEADCHANNEL = 0xb9
IFT_SONETPATH = 0x32
IFT_SONETVT = 0x33
IFT_SRP = 0x97
IFT_SS7SIGLINK = 0x9c
IFT_STACKTOSTACK = 0x6f
IFT_STARLAN = 0xb
IFT_STF = 0xd7
IFT_T1 = 0x12
IFT_TDLC = 0x74
IFT_TERMPAD = 0x5b
IFT_TR008 = 0xb0
IFT_TRANSPHDLC = 0x7b
IFT_TUNNEL = 0x83
IFT_ULTRA = 0x1d
IFT_USB = 0xa0
IFT_V11 = 0x40
IFT_V35 = 0x2d
IFT_V36 = 0x41
IFT_V37 = 0x78
IFT_VDSL = 0x61
IFT_VIRTUALIPADDRESS = 0x70
IFT_VOICEEM = 0x64
IFT_VOICEENCAP = 0x67
IFT_VOICEFXO = 0x65
IFT_VOICEFXS = 0x66
IFT_VOICEOVERATM = 0x98
IFT_VOICEOVERFRAMERELAY = 0x99
IFT_VOICEOVERIP = 0x68
IFT_X213 = 0x5d
IFT_X25 = 0x5
IFT_X25DDN = 0x4
IFT_X25HUNTGROUP = 0x7a
IFT_X25MLP = 0x79
IFT_X25PLE = 0x28
IFT_XETHER = 0x1a
IPPROTO_MAXID = 0x34
IPV6_FAITH = 0x1d
IPV6_MIN_MEMBERSHIPS = 0x1f
IP_FAITH = 0x16
IP_MAX_SOURCE_FILTER = 0x400
IP_MIN_MEMBERSHIPS = 0x1f
MAP_NORESERVE = 0x40
MAP_RENAME = 0x20
NET_RT_MAXID = 0x6
RTF_PRCLONING = 0x10000
RTM_OLDADD = 0x9
RTM_OLDDEL = 0xa
RT_CACHING_CONTEXT = 0x1
RT_NORTREF = 0x2
SIOCADDRT = 0x8030720a
SIOCALIFADDR = 0x8118691b
SIOCDELRT = 0x8030720b
SIOCDLIFADDR = 0x8118691d
SIOCGLIFADDR = 0xc118691c
SIOCGLIFPHYADDR = 0xc118694b
SIOCSLIFPHYADDR = 0x8118694a
)
+233
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@@ -0,0 +1,233 @@
// Copyright 2017 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.
// Constants that were deprecated or moved to enums in the FreeBSD headers. Keep
// them here for backwards compatibility.
package unix
const (
DLT_HHDLC = 0x79
IFF_SMART = 0x20
IFT_1822 = 0x2
IFT_A12MPPSWITCH = 0x82
IFT_AAL2 = 0xbb
IFT_AAL5 = 0x31
IFT_ADSL = 0x5e
IFT_AFLANE8023 = 0x3b
IFT_AFLANE8025 = 0x3c
IFT_ARAP = 0x58
IFT_ARCNET = 0x23
IFT_ARCNETPLUS = 0x24
IFT_ASYNC = 0x54
IFT_ATM = 0x25
IFT_ATMDXI = 0x69
IFT_ATMFUNI = 0x6a
IFT_ATMIMA = 0x6b
IFT_ATMLOGICAL = 0x50
IFT_ATMRADIO = 0xbd
IFT_ATMSUBINTERFACE = 0x86
IFT_ATMVCIENDPT = 0xc2
IFT_ATMVIRTUAL = 0x95
IFT_BGPPOLICYACCOUNTING = 0xa2
IFT_BSC = 0x53
IFT_CCTEMUL = 0x3d
IFT_CEPT = 0x13
IFT_CES = 0x85
IFT_CHANNEL = 0x46
IFT_CNR = 0x55
IFT_COFFEE = 0x84
IFT_COMPOSITELINK = 0x9b
IFT_DCN = 0x8d
IFT_DIGITALPOWERLINE = 0x8a
IFT_DIGITALWRAPPEROVERHEADCHANNEL = 0xba
IFT_DLSW = 0x4a
IFT_DOCSCABLEDOWNSTREAM = 0x80
IFT_DOCSCABLEMACLAYER = 0x7f
IFT_DOCSCABLEUPSTREAM = 0x81
IFT_DS0 = 0x51
IFT_DS0BUNDLE = 0x52
IFT_DS1FDL = 0xaa
IFT_DS3 = 0x1e
IFT_DTM = 0x8c
IFT_DVBASILN = 0xac
IFT_DVBASIOUT = 0xad
IFT_DVBRCCDOWNSTREAM = 0x93
IFT_DVBRCCMACLAYER = 0x92
IFT_DVBRCCUPSTREAM = 0x94
IFT_ENC = 0xf4
IFT_EON = 0x19
IFT_EPLRS = 0x57
IFT_ESCON = 0x49
IFT_ETHER = 0x6
IFT_FAITH = 0xf2
IFT_FAST = 0x7d
IFT_FASTETHER = 0x3e
IFT_FASTETHERFX = 0x45
IFT_FDDI = 0xf
IFT_FIBRECHANNEL = 0x38
IFT_FRAMERELAYINTERCONNECT = 0x3a
IFT_FRAMERELAYMPI = 0x5c
IFT_FRDLCIENDPT = 0xc1
IFT_FRELAY = 0x20
IFT_FRELAYDCE = 0x2c
IFT_FRF16MFRBUNDLE = 0xa3
IFT_FRFORWARD = 0x9e
IFT_G703AT2MB = 0x43
IFT_G703AT64K = 0x42
IFT_GIF = 0xf0
IFT_GIGABITETHERNET = 0x75
IFT_GR303IDT = 0xb2
IFT_GR303RDT = 0xb1
IFT_H323GATEKEEPER = 0xa4
IFT_H323PROXY = 0xa5
IFT_HDH1822 = 0x3
IFT_HDLC = 0x76
IFT_HDSL2 = 0xa8
IFT_HIPERLAN2 = 0xb7
IFT_HIPPI = 0x2f
IFT_HIPPIINTERFACE = 0x39
IFT_HOSTPAD = 0x5a
IFT_HSSI = 0x2e
IFT_HY = 0xe
IFT_IBM370PARCHAN = 0x48
IFT_IDSL = 0x9a
IFT_IEEE80211 = 0x47
IFT_IEEE80212 = 0x37
IFT_IEEE8023ADLAG = 0xa1
IFT_IFGSN = 0x91
IFT_IMT = 0xbe
IFT_INTERLEAVE = 0x7c
IFT_IP = 0x7e
IFT_IPFORWARD = 0x8e
IFT_IPOVERATM = 0x72
IFT_IPOVERCDLC = 0x6d
IFT_IPOVERCLAW = 0x6e
IFT_IPSWITCH = 0x4e
IFT_IPXIP = 0xf9
IFT_ISDN = 0x3f
IFT_ISDNBASIC = 0x14
IFT_ISDNPRIMARY = 0x15
IFT_ISDNS = 0x4b
IFT_ISDNU = 0x4c
IFT_ISO88022LLC = 0x29
IFT_ISO88023 = 0x7
IFT_ISO88024 = 0x8
IFT_ISO88025 = 0x9
IFT_ISO88025CRFPINT = 0x62
IFT_ISO88025DTR = 0x56
IFT_ISO88025FIBER = 0x73
IFT_ISO88026 = 0xa
IFT_ISUP = 0xb3
IFT_L3IPXVLAN = 0x89
IFT_LAPB = 0x10
IFT_LAPD = 0x4d
IFT_LAPF = 0x77
IFT_LOCALTALK = 0x2a
IFT_LOOP = 0x18
IFT_MEDIAMAILOVERIP = 0x8b
IFT_MFSIGLINK = 0xa7
IFT_MIOX25 = 0x26
IFT_MODEM = 0x30
IFT_MPC = 0x71
IFT_MPLS = 0xa6
IFT_MPLSTUNNEL = 0x96
IFT_MSDSL = 0x8f
IFT_MVL = 0xbf
IFT_MYRINET = 0x63
IFT_NFAS = 0xaf
IFT_NSIP = 0x1b
IFT_OPTICALCHANNEL = 0xc3
IFT_OPTICALTRANSPORT = 0xc4
IFT_OTHER = 0x1
IFT_P10 = 0xc
IFT_P80 = 0xd
IFT_PARA = 0x22
IFT_PFLOG = 0xf6
IFT_PFSYNC = 0xf7
IFT_PLC = 0xae
IFT_POS = 0xab
IFT_PPPMULTILINKBUNDLE = 0x6c
IFT_PROPBWAP2MP = 0xb8
IFT_PROPCNLS = 0x59
IFT_PROPDOCSWIRELESSDOWNSTREAM = 0xb5
IFT_PROPDOCSWIRELESSMACLAYER = 0xb4
IFT_PROPDOCSWIRELESSUPSTREAM = 0xb6
IFT_PROPMUX = 0x36
IFT_PROPWIRELESSP2P = 0x9d
IFT_PTPSERIAL = 0x16
IFT_PVC = 0xf1
IFT_QLLC = 0x44
IFT_RADIOMAC = 0xbc
IFT_RADSL = 0x5f
IFT_REACHDSL = 0xc0
IFT_RFC1483 = 0x9f
IFT_RS232 = 0x21
IFT_RSRB = 0x4f
IFT_SDLC = 0x11
IFT_SDSL = 0x60
IFT_SHDSL = 0xa9
IFT_SIP = 0x1f
IFT_SLIP = 0x1c
IFT_SMDSDXI = 0x2b
IFT_SMDSICIP = 0x34
IFT_SONET = 0x27
IFT_SONETOVERHEADCHANNEL = 0xb9
IFT_SONETPATH = 0x32
IFT_SONETVT = 0x33
IFT_SRP = 0x97
IFT_SS7SIGLINK = 0x9c
IFT_STACKTOSTACK = 0x6f
IFT_STARLAN = 0xb
IFT_STF = 0xd7
IFT_T1 = 0x12
IFT_TDLC = 0x74
IFT_TERMPAD = 0x5b
IFT_TR008 = 0xb0
IFT_TRANSPHDLC = 0x7b
IFT_TUNNEL = 0x83
IFT_ULTRA = 0x1d
IFT_USB = 0xa0
IFT_V11 = 0x40
IFT_V35 = 0x2d
IFT_V36 = 0x41
IFT_V37 = 0x78
IFT_VDSL = 0x61
IFT_VIRTUALIPADDRESS = 0x70
IFT_VOICEEM = 0x64
IFT_VOICEENCAP = 0x67
IFT_VOICEFXO = 0x65
IFT_VOICEFXS = 0x66
IFT_VOICEOVERATM = 0x98
IFT_VOICEOVERFRAMERELAY = 0x99
IFT_VOICEOVERIP = 0x68
IFT_X213 = 0x5d
IFT_X25 = 0x5
IFT_X25DDN = 0x4
IFT_X25HUNTGROUP = 0x7a
IFT_X25MLP = 0x79
IFT_X25PLE = 0x28
IFT_XETHER = 0x1a
IPPROTO_MAXID = 0x34
IPV6_FAITH = 0x1d
IPV6_MIN_MEMBERSHIPS = 0x1f
IP_FAITH = 0x16
IP_MAX_SOURCE_FILTER = 0x400
IP_MIN_MEMBERSHIPS = 0x1f
MAP_NORESERVE = 0x40
MAP_RENAME = 0x20
NET_RT_MAXID = 0x6
RTF_PRCLONING = 0x10000
RTM_OLDADD = 0x9
RTM_OLDDEL = 0xa
RT_CACHING_CONTEXT = 0x1
RT_NORTREF = 0x2
SIOCADDRT = 0x8040720a
SIOCALIFADDR = 0x8118691b
SIOCDELRT = 0x8040720b
SIOCDLIFADDR = 0x8118691d
SIOCGLIFADDR = 0xc118691c
SIOCGLIFPHYADDR = 0xc118694b
SIOCSLIFPHYADDR = 0x8118694a
)
+226
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@@ -0,0 +1,226 @@
// Copyright 2017 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.
package unix
const (
IFT_1822 = 0x2
IFT_A12MPPSWITCH = 0x82
IFT_AAL2 = 0xbb
IFT_AAL5 = 0x31
IFT_ADSL = 0x5e
IFT_AFLANE8023 = 0x3b
IFT_AFLANE8025 = 0x3c
IFT_ARAP = 0x58
IFT_ARCNET = 0x23
IFT_ARCNETPLUS = 0x24
IFT_ASYNC = 0x54
IFT_ATM = 0x25
IFT_ATMDXI = 0x69
IFT_ATMFUNI = 0x6a
IFT_ATMIMA = 0x6b
IFT_ATMLOGICAL = 0x50
IFT_ATMRADIO = 0xbd
IFT_ATMSUBINTERFACE = 0x86
IFT_ATMVCIENDPT = 0xc2
IFT_ATMVIRTUAL = 0x95
IFT_BGPPOLICYACCOUNTING = 0xa2
IFT_BSC = 0x53
IFT_CCTEMUL = 0x3d
IFT_CEPT = 0x13
IFT_CES = 0x85
IFT_CHANNEL = 0x46
IFT_CNR = 0x55
IFT_COFFEE = 0x84
IFT_COMPOSITELINK = 0x9b
IFT_DCN = 0x8d
IFT_DIGITALPOWERLINE = 0x8a
IFT_DIGITALWRAPPEROVERHEADCHANNEL = 0xba
IFT_DLSW = 0x4a
IFT_DOCSCABLEDOWNSTREAM = 0x80
IFT_DOCSCABLEMACLAYER = 0x7f
IFT_DOCSCABLEUPSTREAM = 0x81
IFT_DS0 = 0x51
IFT_DS0BUNDLE = 0x52
IFT_DS1FDL = 0xaa
IFT_DS3 = 0x1e
IFT_DTM = 0x8c
IFT_DVBASILN = 0xac
IFT_DVBASIOUT = 0xad
IFT_DVBRCCDOWNSTREAM = 0x93
IFT_DVBRCCMACLAYER = 0x92
IFT_DVBRCCUPSTREAM = 0x94
IFT_ENC = 0xf4
IFT_EON = 0x19
IFT_EPLRS = 0x57
IFT_ESCON = 0x49
IFT_ETHER = 0x6
IFT_FAST = 0x7d
IFT_FASTETHER = 0x3e
IFT_FASTETHERFX = 0x45
IFT_FDDI = 0xf
IFT_FIBRECHANNEL = 0x38
IFT_FRAMERELAYINTERCONNECT = 0x3a
IFT_FRAMERELAYMPI = 0x5c
IFT_FRDLCIENDPT = 0xc1
IFT_FRELAY = 0x20
IFT_FRELAYDCE = 0x2c
IFT_FRF16MFRBUNDLE = 0xa3
IFT_FRFORWARD = 0x9e
IFT_G703AT2MB = 0x43
IFT_G703AT64K = 0x42
IFT_GIF = 0xf0
IFT_GIGABITETHERNET = 0x75
IFT_GR303IDT = 0xb2
IFT_GR303RDT = 0xb1
IFT_H323GATEKEEPER = 0xa4
IFT_H323PROXY = 0xa5
IFT_HDH1822 = 0x3
IFT_HDLC = 0x76
IFT_HDSL2 = 0xa8
IFT_HIPERLAN2 = 0xb7
IFT_HIPPI = 0x2f
IFT_HIPPIINTERFACE = 0x39
IFT_HOSTPAD = 0x5a
IFT_HSSI = 0x2e
IFT_HY = 0xe
IFT_IBM370PARCHAN = 0x48
IFT_IDSL = 0x9a
IFT_IEEE80211 = 0x47
IFT_IEEE80212 = 0x37
IFT_IEEE8023ADLAG = 0xa1
IFT_IFGSN = 0x91
IFT_IMT = 0xbe
IFT_INTERLEAVE = 0x7c
IFT_IP = 0x7e
IFT_IPFORWARD = 0x8e
IFT_IPOVERATM = 0x72
IFT_IPOVERCDLC = 0x6d
IFT_IPOVERCLAW = 0x6e
IFT_IPSWITCH = 0x4e
IFT_ISDN = 0x3f
IFT_ISDNBASIC = 0x14
IFT_ISDNPRIMARY = 0x15
IFT_ISDNS = 0x4b
IFT_ISDNU = 0x4c
IFT_ISO88022LLC = 0x29
IFT_ISO88023 = 0x7
IFT_ISO88024 = 0x8
IFT_ISO88025 = 0x9
IFT_ISO88025CRFPINT = 0x62
IFT_ISO88025DTR = 0x56
IFT_ISO88025FIBER = 0x73
IFT_ISO88026 = 0xa
IFT_ISUP = 0xb3
IFT_L3IPXVLAN = 0x89
IFT_LAPB = 0x10
IFT_LAPD = 0x4d
IFT_LAPF = 0x77
IFT_LOCALTALK = 0x2a
IFT_LOOP = 0x18
IFT_MEDIAMAILOVERIP = 0x8b
IFT_MFSIGLINK = 0xa7
IFT_MIOX25 = 0x26
IFT_MODEM = 0x30
IFT_MPC = 0x71
IFT_MPLS = 0xa6
IFT_MPLSTUNNEL = 0x96
IFT_MSDSL = 0x8f
IFT_MVL = 0xbf
IFT_MYRINET = 0x63
IFT_NFAS = 0xaf
IFT_NSIP = 0x1b
IFT_OPTICALCHANNEL = 0xc3
IFT_OPTICALTRANSPORT = 0xc4
IFT_OTHER = 0x1
IFT_P10 = 0xc
IFT_P80 = 0xd
IFT_PARA = 0x22
IFT_PFLOG = 0xf6
IFT_PFSYNC = 0xf7
IFT_PLC = 0xae
IFT_POS = 0xab
IFT_PPPMULTILINKBUNDLE = 0x6c
IFT_PROPBWAP2MP = 0xb8
IFT_PROPCNLS = 0x59
IFT_PROPDOCSWIRELESSDOWNSTREAM = 0xb5
IFT_PROPDOCSWIRELESSMACLAYER = 0xb4
IFT_PROPDOCSWIRELESSUPSTREAM = 0xb6
IFT_PROPMUX = 0x36
IFT_PROPWIRELESSP2P = 0x9d
IFT_PTPSERIAL = 0x16
IFT_PVC = 0xf1
IFT_QLLC = 0x44
IFT_RADIOMAC = 0xbc
IFT_RADSL = 0x5f
IFT_REACHDSL = 0xc0
IFT_RFC1483 = 0x9f
IFT_RS232 = 0x21
IFT_RSRB = 0x4f
IFT_SDLC = 0x11
IFT_SDSL = 0x60
IFT_SHDSL = 0xa9
IFT_SIP = 0x1f
IFT_SLIP = 0x1c
IFT_SMDSDXI = 0x2b
IFT_SMDSICIP = 0x34
IFT_SONET = 0x27
IFT_SONETOVERHEADCHANNEL = 0xb9
IFT_SONETPATH = 0x32
IFT_SONETVT = 0x33
IFT_SRP = 0x97
IFT_SS7SIGLINK = 0x9c
IFT_STACKTOSTACK = 0x6f
IFT_STARLAN = 0xb
IFT_STF = 0xd7
IFT_T1 = 0x12
IFT_TDLC = 0x74
IFT_TERMPAD = 0x5b
IFT_TR008 = 0xb0
IFT_TRANSPHDLC = 0x7b
IFT_TUNNEL = 0x83
IFT_ULTRA = 0x1d
IFT_USB = 0xa0
IFT_V11 = 0x40
IFT_V35 = 0x2d
IFT_V36 = 0x41
IFT_V37 = 0x78
IFT_VDSL = 0x61
IFT_VIRTUALIPADDRESS = 0x70
IFT_VOICEEM = 0x64
IFT_VOICEENCAP = 0x67
IFT_VOICEFXO = 0x65
IFT_VOICEFXS = 0x66
IFT_VOICEOVERATM = 0x98
IFT_VOICEOVERFRAMERELAY = 0x99
IFT_VOICEOVERIP = 0x68
IFT_X213 = 0x5d
IFT_X25 = 0x5
IFT_X25DDN = 0x4
IFT_X25HUNTGROUP = 0x7a
IFT_X25MLP = 0x79
IFT_X25PLE = 0x28
IFT_XETHER = 0x1a
// missing constants on FreeBSD-11.1-RELEASE, copied from old values in ztypes_freebsd_arm.go
IFF_SMART = 0x20
IFT_FAITH = 0xf2
IFT_IPXIP = 0xf9
IPPROTO_MAXID = 0x34
IPV6_FAITH = 0x1d
IP_FAITH = 0x16
MAP_NORESERVE = 0x40
MAP_RENAME = 0x20
NET_RT_MAXID = 0x6
RTF_PRCLONING = 0x10000
RTM_OLDADD = 0x9
RTM_OLDDEL = 0xa
SIOCADDRT = 0x8030720a
SIOCALIFADDR = 0x8118691b
SIOCDELRT = 0x8030720b
SIOCDLIFADDR = 0x8118691d
SIOCGLIFADDR = 0xc118691c
SIOCGLIFPHYADDR = 0xc118694b
SIOCSLIFPHYADDR = 0x8118694a
)
+17
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@@ -0,0 +1,17 @@
// Copyright 2020 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.
// Constants that were deprecated or moved to enums in the FreeBSD headers. Keep
// them here for backwards compatibility.
package unix
const (
DLT_HHDLC = 0x79
IPV6_MIN_MEMBERSHIPS = 0x1f
IP_MAX_SOURCE_FILTER = 0x400
IP_MIN_MEMBERSHIPS = 0x1f
RT_CACHING_CONTEXT = 0x1
RT_NORTREF = 0x2
)
+36
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@@ -0,0 +1,36 @@
// Copyright 2014 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.
// +build dragonfly freebsd linux netbsd openbsd
package unix
import "unsafe"
// fcntl64Syscall is usually SYS_FCNTL, but is overridden on 32-bit Linux
// systems by fcntl_linux_32bit.go to be SYS_FCNTL64.
var fcntl64Syscall uintptr = SYS_FCNTL
func fcntl(fd int, cmd, arg int) (int, error) {
valptr, _, errno := Syscall(fcntl64Syscall, uintptr(fd), uintptr(cmd), uintptr(arg))
var err error
if errno != 0 {
err = errno
}
return int(valptr), err
}
// FcntlInt performs a fcntl syscall on fd with the provided command and argument.
func FcntlInt(fd uintptr, cmd, arg int) (int, error) {
return fcntl(int(fd), cmd, arg)
}
// FcntlFlock performs a fcntl syscall for the F_GETLK, F_SETLK or F_SETLKW command.
func FcntlFlock(fd uintptr, cmd int, lk *Flock_t) error {
_, _, errno := Syscall(fcntl64Syscall, fd, uintptr(cmd), uintptr(unsafe.Pointer(lk)))
if errno == 0 {
return nil
}
return errno
}
+18
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@@ -0,0 +1,18 @@
// Copyright 2019 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.
package unix
import "unsafe"
// FcntlInt performs a fcntl syscall on fd with the provided command and argument.
func FcntlInt(fd uintptr, cmd, arg int) (int, error) {
return fcntl(int(fd), cmd, arg)
}
// FcntlFlock performs a fcntl syscall for the F_GETLK, F_SETLK or F_SETLKW command.
func FcntlFlock(fd uintptr, cmd int, lk *Flock_t) error {
_, err := fcntl(int(fd), cmd, int(uintptr(unsafe.Pointer(lk))))
return err
}
+13
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@@ -0,0 +1,13 @@
// +build linux,386 linux,arm linux,mips linux,mipsle
// Copyright 2014 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.
package unix
func init() {
// On 32-bit Linux systems, the fcntl syscall that matches Go's
// Flock_t type is SYS_FCNTL64, not SYS_FCNTL.
fcntl64Syscall = SYS_FCNTL64
}
+29
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@@ -0,0 +1,29 @@
// Copyright 2019 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.
// +build aix darwin dragonfly freebsd linux netbsd openbsd solaris
package unix
// Set adds fd to the set fds.
func (fds *FdSet) Set(fd int) {
fds.Bits[fd/NFDBITS] |= (1 << (uintptr(fd) % NFDBITS))
}
// Clear removes fd from the set fds.
func (fds *FdSet) Clear(fd int) {
fds.Bits[fd/NFDBITS] &^= (1 << (uintptr(fd) % NFDBITS))
}
// IsSet returns whether fd is in the set fds.
func (fds *FdSet) IsSet(fd int) bool {
return fds.Bits[fd/NFDBITS]&(1<<(uintptr(fd)%NFDBITS)) != 0
}
// Zero clears the set fds.
func (fds *FdSet) Zero() {
for i := range fds.Bits {
fds.Bits[i] = 0
}
}
+62
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@@ -0,0 +1,62 @@
// Copyright 2015 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.
// +build gccgo
// +build !aix
package unix
import "syscall"
// We can't use the gc-syntax .s files for gccgo. On the plus side
// much of the functionality can be written directly in Go.
//extern gccgoRealSyscallNoError
func realSyscallNoError(trap, a1, a2, a3, a4, a5, a6, a7, a8, a9 uintptr) (r uintptr)
//extern gccgoRealSyscall
func realSyscall(trap, a1, a2, a3, a4, a5, a6, a7, a8, a9 uintptr) (r, errno uintptr)
func SyscallNoError(trap, a1, a2, a3 uintptr) (r1, r2 uintptr) {
syscall.Entersyscall()
r := realSyscallNoError(trap, a1, a2, a3, 0, 0, 0, 0, 0, 0)
syscall.Exitsyscall()
return r, 0
}
func Syscall(trap, a1, a2, a3 uintptr) (r1, r2 uintptr, err syscall.Errno) {
syscall.Entersyscall()
r, errno := realSyscall(trap, a1, a2, a3, 0, 0, 0, 0, 0, 0)
syscall.Exitsyscall()
return r, 0, syscall.Errno(errno)
}
func Syscall6(trap, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2 uintptr, err syscall.Errno) {
syscall.Entersyscall()
r, errno := realSyscall(trap, a1, a2, a3, a4, a5, a6, 0, 0, 0)
syscall.Exitsyscall()
return r, 0, syscall.Errno(errno)
}
func Syscall9(trap, a1, a2, a3, a4, a5, a6, a7, a8, a9 uintptr) (r1, r2 uintptr, err syscall.Errno) {
syscall.Entersyscall()
r, errno := realSyscall(trap, a1, a2, a3, a4, a5, a6, a7, a8, a9)
syscall.Exitsyscall()
return r, 0, syscall.Errno(errno)
}
func RawSyscallNoError(trap, a1, a2, a3 uintptr) (r1, r2 uintptr) {
r := realSyscallNoError(trap, a1, a2, a3, 0, 0, 0, 0, 0, 0)
return r, 0
}
func RawSyscall(trap, a1, a2, a3 uintptr) (r1, r2 uintptr, err syscall.Errno) {
r, errno := realSyscall(trap, a1, a2, a3, 0, 0, 0, 0, 0, 0)
return r, 0, syscall.Errno(errno)
}
func RawSyscall6(trap, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2 uintptr, err syscall.Errno) {
r, errno := realSyscall(trap, a1, a2, a3, a4, a5, a6, 0, 0, 0)
return r, 0, syscall.Errno(errno)
}
+39
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// Copyright 2015 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.
// +build gccgo
// +build !aix
#include <errno.h>
#include <stdint.h>
#include <unistd.h>
#define _STRINGIFY2_(x) #x
#define _STRINGIFY_(x) _STRINGIFY2_(x)
#define GOSYM_PREFIX _STRINGIFY_(__USER_LABEL_PREFIX__)
// Call syscall from C code because the gccgo support for calling from
// Go to C does not support varargs functions.
struct ret {
uintptr_t r;
uintptr_t err;
};
struct ret
gccgoRealSyscall(uintptr_t trap, uintptr_t a1, uintptr_t a2, uintptr_t a3, uintptr_t a4, uintptr_t a5, uintptr_t a6, uintptr_t a7, uintptr_t a8, uintptr_t a9)
{
struct ret r;
errno = 0;
r.r = syscall(trap, a1, a2, a3, a4, a5, a6, a7, a8, a9);
r.err = errno;
return r;
}
uintptr_t
gccgoRealSyscallNoError(uintptr_t trap, uintptr_t a1, uintptr_t a2, uintptr_t a3, uintptr_t a4, uintptr_t a5, uintptr_t a6, uintptr_t a7, uintptr_t a8, uintptr_t a9)
{
return syscall(trap, a1, a2, a3, a4, a5, a6, a7, a8, a9);
}
+20
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@@ -0,0 +1,20 @@
// Copyright 2015 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.
// +build gccgo,linux,amd64
package unix
import "syscall"
//extern gettimeofday
func realGettimeofday(*Timeval, *byte) int32
func gettimeofday(tv *Timeval) (err syscall.Errno) {
r := realGettimeofday(tv, nil)
if r < 0 {
return syscall.GetErrno()
}
return 0
}
+65
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@@ -0,0 +1,65 @@
// Copyright 2018 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.
// +build aix darwin dragonfly freebsd linux netbsd openbsd solaris
package unix
import (
"runtime"
"unsafe"
)
// ioctl itself should not be exposed directly, but additional get/set
// functions for specific types are permissible.
// IoctlSetInt performs an ioctl operation which sets an integer value
// on fd, using the specified request number.
func IoctlSetInt(fd int, req uint, value int) error {
return ioctl(fd, req, uintptr(value))
}
// IoctlSetWinsize performs an ioctl on fd with a *Winsize argument.
//
// To change fd's window size, the req argument should be TIOCSWINSZ.
func IoctlSetWinsize(fd int, req uint, value *Winsize) error {
// TODO: if we get the chance, remove the req parameter and
// hardcode TIOCSWINSZ.
err := ioctl(fd, req, uintptr(unsafe.Pointer(value)))
runtime.KeepAlive(value)
return err
}
// IoctlSetTermios performs an ioctl on fd with a *Termios.
//
// The req value will usually be TCSETA or TIOCSETA.
func IoctlSetTermios(fd int, req uint, value *Termios) error {
// TODO: if we get the chance, remove the req parameter.
err := ioctl(fd, req, uintptr(unsafe.Pointer(value)))
runtime.KeepAlive(value)
return err
}
// IoctlGetInt performs an ioctl operation which gets an integer value
// from fd, using the specified request number.
//
// A few ioctl requests use the return value as an output parameter;
// for those, IoctlRetInt should be used instead of this function.
func IoctlGetInt(fd int, req uint) (int, error) {
var value int
err := ioctl(fd, req, uintptr(unsafe.Pointer(&value)))
return value, err
}
func IoctlGetWinsize(fd int, req uint) (*Winsize, error) {
var value Winsize
err := ioctl(fd, req, uintptr(unsafe.Pointer(&value)))
return &value, err
}
func IoctlGetTermios(fd int, req uint) (*Termios, error) {
var value Termios
err := ioctl(fd, req, uintptr(unsafe.Pointer(&value)))
return &value, err
}

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