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package internal
import "C"
import (
"bytes"
"encoding/binary"
"fmt"
"ioriotng/internal/syncpool"
. "ioriotng/internal/types"
bpf "github.com/aquasecurity/libbpfgo"
)
func eventLoop(bpfModule *bpf.Module, ch <-chan []byte) {
enterOpen := make(map[uint32]*OpenatEnterEvent)
enterFd := make(map[uint32]*FdEvent)
// To do this, extract the PID from the TID (pid_tid >> 32)
// openFiles := make(map[
for raw := range ch {
switch OpId(raw[0]) {
case OPENAT_ENTER_OP_ID:
fallthrough
case OPEN_ENTER_OP_ID:
ev := readRaw(raw, syncpool.OpenEnterEvent.Get().(*OpenatEnterEvent))
enterOpen[ev.PidTGid] = ev
case OPENAT_EXIT_OP_ID:
fallthrough
case OPEN_EXIT_OP_ID:
ev := readRaw(raw, syncpool.FdEvent.Get().(*FdEvent))
enterEv, ok := enterOpen[ev.PidTGid]
if !ok {
fmt.Println("Dropping", ev)
syncpool.FdEvent.Put(ev)
continue
}
duration := float64(ev.Time-enterEv.Time) / float64(1_000_000)
fmt.Println(duration, "ms", enterEv, ev)
delete(enterOpen, ev.PidTGid)
syncpool.FdEvent.Put(ev)
syncpool.OpenEnterEvent.Put(enterEv)
case CLOSE_ENTER_OP_ID:
fallthrough
case WRITE_ENTER_OP_ID:
fallthrough
case WRITEV_ENTER_OP_ID:
ev := readRaw(raw, syncpool.FdEvent.Get().(*FdEvent))
enterFd[ev.PidTGid] = ev
case CLOSE_EXIT_OP_ID:
fallthrough
case WRITE_EXIT_OP_ID:
fallthrough
case WRITEV_EXIT_OP_ID:
ev := readRaw(raw, syncpool.NullEvent.Get().(*NullEvent))
enterEv, ok := enterFd[ev.PidTGid]
if !ok {
fmt.Println("Dropping", ev)
syncpool.NullEvent.Put(ev)
continue
}
duration := float64(ev.Time-enterEv.Time) / float64(1_000_000)
fmt.Println(duration, "ms", enterEv, ev)
delete(enterFd, ev.PidTGid)
syncpool.NullEvent.Put(ev)
syncpool.FdEvent.Put(enterEv)
default:
panic(fmt.Sprintf("UNKNOWN Ringbuf data received len:%d raw:%v", len(raw), raw))
}
}
fmt.Println("Good bye")
}
func readRaw[T any](raw []byte, ev *T) *T {
if err := binary.Read(bytes.NewReader(raw), binary.LittleEndian, ev); err != nil {
fmt.Println(ev, raw, len(raw), err)
panic(raw)
}
return ev
}
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