Source: sys_cloexec.go in package internal/poll

Source File
	sys_cloexec.go

Belonging Package
	internal/poll

This file implements sysSocket and accept for platforms that do not provide a fast path for setting SetNonblock and CloseOnExec.

+build aix darwin js,wasm solaris,!illumos


package poll

import (
	"syscall"
)

Wrapper around the accept system call that marks the returned file descriptor as nonblocking and close-on-exec.

See ../syscall/exec_unix.go for description of ForkLock. It is probably okay to hold the lock across syscall.Accept because we have put fd.sysfd into non-blocking mode. However, a call to the File method will put it back into blocking mode. We can't take that risk, so no use of ForkLock here.

	ns, sa, err := AcceptFunc(s)
	if err == nil {
		syscall.CloseOnExec(ns)
	}
	if err != nil {
		return -1, nil, "accept", err
	}
	if err = syscall.SetNonblock(ns, true); err != nil {
		CloseFunc(ns)
		return -1, nil, "setnonblock", err
	}
	return ns, sa, "", nil


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