1 .\" $NetBSD: unlockpt.3,v 1.3 2004/05/28 00:10:57 wiz Exp $
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35 .Nd unlock the slave pseudo-terminal device
41 .Fn unlockpt "int fildes"
45 unlocks access to the pseudo-terminal device corresponding to the
46 master pseudo-terminal device associated with
48 Conforming applications must call this function before opening the
49 slave pseudo-terminal device.
53 returns 0; otherwise a value of \-1 is returned and
55 is set to indicate the error.
59 function will fail if:
62 the corresponding pseudo-terminal device could not be accessed.
65 is not a valid descriptor.
68 is not associated with a master pseudo-terminal device.
85 Its first release was in