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package internal
import "C"
import (
"bytes"
"encoding/binary"
"fmt"
"log"
"runtime"
"ioriotng/internal/debugfs"
"ioriotng/internal/flags"
"ioriotng/internal/tracepoints"
"ioriotng/internal/types"
bpf "github.com/aquasecurity/libbpfgo"
)
type BpfMapper interface {
String() string
}
func Run(flags flags.Flags) {
// To consider for implementation!
log.Println(debugfs.TracepointsWithFd())
bpfModule, err := bpf.NewModuleFromFile("ioriotng.bpf.o")
if err != nil {
log.Fatal(err)
}
defer bpfModule.Close()
if err := flags.ResizeBPFMaps(bpfModule); err != nil {
log.Fatal(err)
}
err = bpfModule.BPFLoadObject()
if err != nil {
log.Fatal(err)
}
if err := flags.SetBPF(bpfModule); err != nil {
log.Fatal(err)
}
if err := tracepoints.AttachSyscalls(bpfModule); err != nil {
log.Fatal(err)
}
ch := make(chan []byte)
rb, err := bpfModule.InitRingBuf("event_map", ch)
if err != nil {
log.Fatal(err)
}
rb.Poll(300)
for raw := range ch {
switch types.OpId(raw[0]) {
// TODO: Actually, need one ring buffer event per enter/exit ... otherwise may be difficult to capture
// what belongs to what in event based / multiplexed applications.
case types.OPENAT_ENTER_OP_ID:
var ev types.OpenatEnterEvent
if err := binary.Read(bytes.NewReader(raw), binary.LittleEndian, &ev); err != nil {
log.Fatal(err)
}
fmt.Println(ev)
case types.OPENAT_EXIT_OP_ID:
fallthrough
case types.CLOSE_ENTER_OP_ID:
var ev types.FdEvent
if err := binary.Read(bytes.NewReader(raw), binary.LittleEndian, &ev); err != nil {
log.Fatal(err)
}
fmt.Println(ev)
case types.CLOSE_EXIT_OP_ID:
var ev types.NullEvent
if err := binary.Read(bytes.NewReader(raw), binary.LittleEndian, &ev); err != nil {
log.Fatal(err)
}
fmt.Println(ev)
default:
panic(fmt.Sprintf("UNKNOWN Ringbuf data received len:%d raw:%v", len(raw), raw))
}
}
log.Println("Good bye")
}
func ksymArch() string {
switch runtime.GOARCH {
case "amd64":
return "x64"
case "arm64":
return "arm64"
default:
panic("unsupported architecture")
}
}
|
