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|
package internal
import (
"testing"
"ior/internal/event"
"ior/internal/globalfilter"
"ior/internal/types"
)
func TestHandlePipeExitTracksReturnedFds(t *testing.T) {
el := mustNewEventLoop(t, eventLoopConfig{})
enter := &types.PipeEvent{
EventType: types.ENTER_PIPE_EVENT,
TraceId: types.SYS_ENTER_PIPE2,
Time: 100,
Pid: 70,
Tid: 71,
Flags: 0x80000,
Fd0: -1,
Fd1: -1,
Ret: 0,
}
exit := &types.PipeEvent{
EventType: types.EXIT_PIPE_EVENT,
TraceId: types.SYS_EXIT_PIPE2,
Time: 200,
Pid: 70,
Tid: 71,
Flags: 0x80000,
Fd0: 52,
Fd1: 53,
Ret: 0,
}
ep := &event.Pair{EnterEv: enter, ExitEv: exit}
if ok := el.handlePipeExit(ep, enter); !ok {
t.Fatal("handlePipeExit returned false")
}
verifyFileDescriptor(t, el, 52, "pipe:524288:52:53")
verifyFileDescriptor(t, el, 53, "pipe:524288:52:53")
}
// TestHandlePipeExitFailureTracksNoFds locks in the pipe(2) failure path:
// when the syscall returns -1 the kernel writes nothing into the output buffer,
// so the BPF exit handler leaves fd0/fd1 at -1 and the runtime must not register
// any descriptor. Tracking a bogus fd here would attribute later reads/writes to
// a pipe that was never created.
func TestHandlePipeExitFailureTracksNoFds(t *testing.T) {
el := mustNewEventLoop(t, eventLoopConfig{})
enter := &types.PipeEvent{
EventType: types.ENTER_PIPE_EVENT,
TraceId: types.SYS_ENTER_PIPE,
Time: 100,
Pid: 72,
Tid: 73,
Flags: 0,
Fd0: -1,
Fd1: -1,
Ret: 0,
}
exit := &types.PipeEvent{
EventType: types.EXIT_PIPE_EVENT,
TraceId: types.SYS_EXIT_PIPE,
Time: 200,
Pid: 72,
Tid: 73,
Flags: 0,
Fd0: -1,
Fd1: -1,
Ret: -1,
}
ep := &event.Pair{EnterEv: enter, ExitEv: exit}
if ok := el.handlePipeExit(ep, enter); !ok {
t.Fatal("handlePipeExit returned false")
}
verifyFdNotTracked(t, el, -1)
if ep.File != nil {
t.Errorf("expected no file attached to failed pipe pair, got %q", ep.File.Name())
}
}
func TestHandleEventfdExitTracksReturnedFd(t *testing.T) {
el := mustNewEventLoop(t, eventLoopConfig{})
enter := &types.EventfdEvent{
EventType: types.ENTER_EVENTFD_EVENT,
TraceId: types.SYS_ENTER_EVENTFD2,
Time: 100,
Pid: 80,
Tid: 81,
Flags: 0x800,
Ret: -1,
}
exit := &types.EventfdEvent{
EventType: types.EXIT_EVENTFD_EVENT,
TraceId: types.SYS_EXIT_EVENTFD2,
Time: 200,
Pid: 80,
Tid: 81,
Flags: 0x800,
Ret: 61,
}
ep := &event.Pair{EnterEv: enter, ExitEv: exit}
if ok := el.handleEventfdExit(ep, enter); !ok {
t.Fatal("handleEventfdExit returned false")
}
verifyFileDescriptor(t, el, 61, "eventfd:2048")
}
func TestHandleEventfdExitAppliesPairFilter(t *testing.T) {
el := mustNewEventLoop(t, eventLoopConfig{
filter: globalfilter.Filter{
Syscall: &globalfilter.StringFilter{Pattern: "openat"},
},
})
enter := &types.EventfdEvent{
EventType: types.ENTER_EVENTFD_EVENT,
TraceId: types.SYS_ENTER_EVENTFD,
Time: 100,
Pid: 82,
Tid: 83,
Flags: 0,
Ret: -1,
}
exit := &types.EventfdEvent{
EventType: types.EXIT_EVENTFD_EVENT,
TraceId: types.SYS_EXIT_EVENTFD,
Time: 200,
Pid: 82,
Tid: 83,
Flags: 0,
Ret: 44,
}
ep := &event.Pair{EnterEv: enter, ExitEv: exit}
if ok := el.handleEventfdExit(ep, enter); ok {
t.Fatal("handleEventfdExit should reject pair due to filter mismatch")
}
}
func TestEventfdDescriptorNameByTraceID(t *testing.T) {
tests := []struct {
name string
traceID types.TraceId
flags int32
want string
}{
{name: "eventfd", traceID: types.SYS_ENTER_EVENTFD2, flags: 1, want: "eventfd:1"},
{name: "epoll_create1", traceID: types.SYS_ENTER_EPOLL_CREATE1, flags: 11, want: "epollfd:11"},
{name: "inotify_init1", traceID: types.SYS_ENTER_INOTIFY_INIT1, flags: 12, want: "inotifyfd:12"},
{name: "fanotify_init", traceID: types.SYS_ENTER_FANOTIFY_INIT, flags: 13, want: "fanotifyfd:13"},
{name: "landlock_create_ruleset", traceID: types.SYS_ENTER_LANDLOCK_CREATE_RULESET, flags: 14, want: "landlockfd:14"},
{name: "fsopen", traceID: types.SYS_ENTER_FSOPEN, flags: 15, want: "fsopenfd:15"},
{name: "memfd_create", traceID: types.SYS_ENTER_MEMFD_CREATE, flags: 2, want: "memfd:2"},
{name: "memfd_secret", traceID: types.SYS_ENTER_MEMFD_SECRET, flags: 3, want: "memfd-secret:3"},
{name: "userfaultfd", traceID: types.SYS_ENTER_USERFAULTFD, flags: 4, want: "userfaultfd:4"},
{name: "signalfd", traceID: types.SYS_ENTER_SIGNALFD4, flags: 5, want: "signalfd:5"},
{name: "timerfd_create", traceID: types.SYS_ENTER_TIMERFD_CREATE, flags: 6, want: "timerfd:6"},
{name: "pidfd_open", traceID: types.SYS_ENTER_PIDFD_OPEN, flags: 7, want: "pidfd:7"},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
got := eventfdDescriptorName(tt.traceID, tt.flags)
if got != tt.want {
t.Fatalf("eventfdDescriptorName(%s, %d) = %q, want %q", tt.traceID.String(), tt.flags, got, tt.want)
}
})
}
}
func TestInitRawHandlersRegistersIPCEvents(t *testing.T) {
el := mustNewEventLoop(t, eventLoopConfig{})
if _, ok := el.rawHandlers[types.ENTER_PIPE_EVENT]; !ok {
t.Fatal("ENTER_PIPE_EVENT handler is not registered")
}
if _, ok := el.rawHandlers[types.EXIT_PIPE_EVENT]; !ok {
t.Fatal("EXIT_PIPE_EVENT handler is not registered")
}
if _, ok := el.rawHandlers[types.ENTER_EVENTFD_EVENT]; !ok {
t.Fatal("ENTER_EVENTFD_EVENT handler is not registered")
}
if _, ok := el.rawHandlers[types.EXIT_EVENTFD_EVENT]; !ok {
t.Fatal("EXIT_EVENTFD_EVENT handler is not registered")
}
}
|
