syscall: forkExec - todo

internal/lib/syscall/forkpipe.go

@@ -0,0 +1,39 @@
+// Copyright 2011 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 aix || darwin
+
+package syscall
+
+import (
+	"github.com/goplus/llgo/c"
+	"github.com/goplus/llgo/c/os"
+	"github.com/goplus/llgo/c/syscall"
+)
+
+// forkExecPipe opens a pipe and non-atomically sets O_CLOEXEC on both file
+// descriptors.
+func forkExecPipe(p []int) error {
+	err := Pipe(p)
+	if err != nil {
+		return err
+	}
+	ret := os.Fcntl(c.Int(p[0]), syscall.F_SETFD, syscall.FD_CLOEXEC)
+	if ret != 0 {
+		return Errno(ret)
+	}
+	ret = os.Fcntl(c.Int(p[1]), syscall.F_SETFD, syscall.FD_CLOEXEC)
+	if ret != 0 {
+		return Errno(ret)
+	}
+	return nil
+}
+
+func acquireForkLock() {
+	ForkLock.Lock()
+}
+
+func releaseForkLock() {
+	ForkLock.Unlock()
+}