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|
package seccomp
import (
"reflect"
"testing"
"unsafe"
"hakurei.app/container/std"
"hakurei.app/ext"
)
func TestSyscallResolveName(t *testing.T) {
t.Parallel()
for name, want := range ext.Syscalls() {
t.Run(name, func(t *testing.T) {
t.Parallel()
// this checks the std implementation against libseccomp.
if got, ok := syscallResolveName(name); !ok || got != want {
t.Errorf("syscallResolveName(%q) = %d, want %d", name, got, want)
}
})
}
}
func TestRuleType(t *testing.T) {
assertKind[ext.Uint, scmpUint](t)
assertOverflow(t, ext.Uint(ext.MaxUint))
assertKind[ext.Int, scmpInt](t)
assertOverflow(t, ext.Int(ext.MaxInt))
assertSize[std.NativeRule, syscallRule](t)
assertKind[std.ScmpDatum, scmpDatum](t)
assertKind[std.ScmpCompare, scmpCompare](t)
assertSize[std.ScmpArgCmp, scmpArgCmp](t)
}
// assertSize asserts that native and equivalent are of the same size.
func assertSize[native, equivalent any](t *testing.T) {
t.Helper()
got, want := unsafe.Sizeof(*new(native)), unsafe.Sizeof(*new(equivalent))
if got != want {
t.Fatalf("%s: %d, want %d", reflect.TypeFor[native]().Name(), got, want)
}
}
// assertKind asserts that native and equivalent are of the same kind.
func assertKind[native, equivalent any](t *testing.T) {
t.Helper()
assertSize[native, equivalent](t)
nativeType, equivalentType := reflect.TypeFor[native](), reflect.TypeFor[equivalent]()
got, want := nativeType.Kind(), equivalentType.Kind()
if got == reflect.Invalid || want == reflect.Invalid {
t.Fatalf("%s: invalid call to assertKind", nativeType.Name())
}
if got == reflect.Struct {
t.Fatalf("%s: struct is unsupported by assertKind", nativeType.Name())
}
if got != want {
t.Fatalf("%s: %s, want %s", nativeType.Name(), nativeType.Kind(), equivalentType.Kind())
}
}
// assertOverflow asserts that incrementing m overflows.
func assertOverflow[T ~int32 | ~uint32](t *testing.T, m T) {
t.Helper()
old := m
m++
if m > old {
t.Fatalf("unexpected value %#x", m)
}
}
|
