library os: openFileNolog

internal/lib/internal/syscall/unix/nonblocking_js.go

@@ -0,0 +1,15 @@
+// Copyright 2018 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+//go:build js && wasm
+
+package unix
+
+func IsNonblock(fd int) (nonblocking bool, err error) {
+	return false, nil
+}
+
+func HasNonblockFlag(flag int) bool {
+	return false
+}

internal/lib/internal/syscall/unix/nonblocking_unix.go

@@ -0,0 +1,23 @@
+// Copyright 2018 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+//go:build unix
+
+package unix
+
+import "github.com/goplus/llgo/c/syscall"
+
+/* TODO(xsw):
+func IsNonblock(fd int) (nonblocking bool, err error) {
+	flag, e1 := Fcntl(fd, syscall.F_GETFL, 0)
+	if e1 != nil {
+		return false, e1
+	}
+	return flag&syscall.O_NONBLOCK != 0, nil
+}
+*/
+
+func HasNonblockFlag(flag int) bool {
+	return flag&syscall.O_NONBLOCK != 0
+}

internal/lib/internal/syscall/unix/nonblocking_wasip1.go

@@ -0,0 +1,37 @@
+// Copyright 2023 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+//go:build wasip1
+
+package unix
+
+import "github.com/goplus/llgo/c/syscall"
+
+/* TODO(xsw):
+import (
+	"syscall"
+	_ "unsafe" // for go:linkname
+)
+
+func IsNonblock(fd int) (nonblocking bool, err error) {
+	flags, e1 := fd_fdstat_get_flags(fd)
+	if e1 != nil {
+		return false, e1
+	}
+	return flags&syscall.FDFLAG_NONBLOCK != 0, nil
+}
+*/
+
+func HasNonblockFlag(flag int) bool {
+	return flag&syscall.FDFLAG_NONBLOCK != 0
+}
+
+/* TODO(xsw):
+// This helper is implemented in the syscall package. It means we don't have
+// to redefine the fd_fdstat_get host import or the fdstat struct it
+// populates.
+//
+//-go:linkname fd_fdstat_get_flags syscall.fd_fdstat_get_flags
+func fd_fdstat_get_flags(fd int) (uint32, error)
+*/

internal/lib/internal/syscall/unix/unix.go

@@ -0,0 +1,22 @@
+/*
+ * 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 unix
+
+// llgo:skipall
+import (
+	_ "unsafe"
+)