$NetBSD: unlockpt.3,v 1.4 2008/04/30 13:10:51 martin Exp $
Copyright (c) 2004 The NetBSD Foundation, Inc.
All rights reserved.
This code is derived from software contributed to The NetBSD Foundation
by Christos Zoulas.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
.Dd May 25, 2004 .Dt UNLOCKPT 3 .Os .Sh NAME .Nm unlockpt .Nd unlock the slave pseudo-terminal device .Sh LIBRARY .Lb libc .Sh SYNOPSIS n stdlib.h .Ft int .Fn unlockpt "int fildes" .Sh DESCRIPTION The .Fn unlockpt unlocks access to the pseudo-terminal device corresponding to the master pseudo-terminal device associated with .Fa fildes . Conforming applications must call this function before opening the slave pseudo-terminal device. .Sh RETURN VALUES If successful, .Fn unlockpt returns 0; otherwise a value of -1 is returned and .Va errno is set to indicate the error. .Sh ERRORS The .Fn unlockpt function will fail if: l -tag -width Er t Bq Er EACCESS the corresponding pseudo-terminal device could not be accessed. t Bq Er EBADF .Fa fildes is not a valid descriptor. t Bq Er EINVAL .Fa fildes is not associated with a master pseudo-terminal device. .El .Sh NOTES In .Nx .Fn unlockpt does nothing. .Sh SEE ALSO .Xr ioctl 2 , .Xr grantpt 3 , .Xr posix_openpt 3 , .Xr ptsname 3 .Sh STANDARDS The .Fn unlockpt function conforms to .St -p1003.1-2001 . Its first release was in .St -xpg4.2 .
Copyright (c) 2004 The NetBSD Foundation, Inc.
All rights reserved.
This code is derived from software contributed to The NetBSD Foundation
by Christos Zoulas.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
.Dd May 25, 2004 .Dt UNLOCKPT 3 .Os .Sh NAME .Nm unlockpt .Nd unlock the slave pseudo-terminal device .Sh LIBRARY .Lb libc .Sh SYNOPSIS n stdlib.h .Ft int .Fn unlockpt "int fildes" .Sh DESCRIPTION The .Fn unlockpt unlocks access to the pseudo-terminal device corresponding to the master pseudo-terminal device associated with .Fa fildes . Conforming applications must call this function before opening the slave pseudo-terminal device. .Sh RETURN VALUES If successful, .Fn unlockpt returns 0; otherwise a value of -1 is returned and .Va errno is set to indicate the error. .Sh ERRORS The .Fn unlockpt function will fail if: l -tag -width Er t Bq Er EACCESS the corresponding pseudo-terminal device could not be accessed. t Bq Er EBADF .Fa fildes is not a valid descriptor. t Bq Er EINVAL .Fa fildes is not associated with a master pseudo-terminal device. .El .Sh NOTES In .Nx .Fn unlockpt does nothing. .Sh SEE ALSO .Xr ioctl 2 , .Xr grantpt 3 , .Xr posix_openpt 3 , .Xr ptsname 3 .Sh STANDARDS The .Fn unlockpt function conforms to .St -p1003.1-2001 . Its first release was in .St -xpg4.2 .
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