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tcp_kprobe_hooks.go
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/
tcp_kprobe_hooks.go
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package main
import (
"github.com/cilium/ebpf/link"
"github.com/go-errors/errors"
)
type tcpKprobeHooks struct {
tcpSendmsg link.Link
tcpRecvmsg link.Link
}
func (s *tcpKprobeHooks) installTcpKprobeHooks(bpfObjects *tracerObjects) error {
var err error
s.tcpSendmsg, err = link.Kprobe("tcp_sendmsg", bpfObjects.TcpSendmsg, nil)
if err != nil {
return errors.Wrap(err, 0)
}
s.tcpRecvmsg, err = link.Kprobe("tcp_recvmsg", bpfObjects.TcpRecvmsg, nil)
if err != nil {
return errors.Wrap(err, 0)
}
return nil
}
func (s *tcpKprobeHooks) close() []error {
returnValue := make([]error, 0)
if s.tcpSendmsg != nil {
if err := s.tcpSendmsg.Close(); err != nil {
returnValue = append(returnValue, err)
}
}
if s.tcpRecvmsg != nil {
if err := s.tcpRecvmsg.Close(); err != nil {
returnValue = append(returnValue, err)
}
}
return returnValue
}