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// +build darwin dragonfly freebsd linux netbsd openbsd plan9
package daemon
import (
"syscall"
)
func lockFile(fd uintptr) error {
err := syscall.Flock(int(fd), syscall.LOCK_EX|syscall.LOCK_NB)
if err == syscall.EWOULDBLOCK {
err = ErrWouldBlock
}
return err
}
func unlockFile(fd uintptr) error {
err := syscall.Flock(int(fd), syscall.LOCK_UN)
if err == syscall.EWOULDBLOCK {
err = ErrWouldBlock
}
return err
}
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