patch: syscall

internal/lib/syscall/syscall.go

@@ -0,0 +1,46 @@
+/*
+ * Copyright (c) 2024 The GoPlus Authors (goplus.org). All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package syscall
+
+// llgo:skipall
+import (
+	"unsafe"
+
+	"github.com/goplus/llgo/c"
+	"github.com/goplus/llgo/c/os"
+)
+
+func errnoErr(errno c.Int) error {
+	panic("todo")
+}
+
+func Getcwd(buf []byte) (n int, err error) {
+	ptr := unsafe.Pointer(unsafe.SliceData(buf))
+	ret := os.Getcwd(ptr, uintptr(len(buf)))
+	if ret != nil {
+		return int(c.Strlen(ret)), nil
+	}
+	return 0, errnoErr(os.Errno)
+}
+
+func Getwd() (string, error) {
+	wd := os.Getcwd(c.Alloca(os.PATH_MAX), os.PATH_MAX)
+	if wd != nil {
+		return c.GoString(wd), nil
+	}
+	return "", errnoErr(os.Errno)
+}