Source: nonblocking_libc.go in package internal/syscall/unix

Source File
	nonblocking_libc.go

Belonging Package
	internal/syscall/unix

+build aix darwin solaris


package unix

import (
	"syscall"
	_ "unsafe" // for go:linkname
)

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
}

Implemented in the syscall package.go:linkname fcntl syscall.fcntl


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