Man page or keyword search:   man All Sections 1 - General Commands 2 - System Calls 3 - Subroutines, Functions 4 - Special Files 5 - File Formats 6 - Games and Screensavers 7 - Macros and Conventions 8 - Maintenence Commands 9 - Kernel Interface New Commands Server 4.4BSD AIX Alpinelinux Archlinux Aros BSDOS BSDi Bifrost CentOS Cygwin Darwin Debian DigitalUNIX DragonFly ElementaryOS Fedora FreeBSD Gentoo GhostBSD HP-UX Haiku Hurd IRIX Inferno JazzOS Kali Knoppix LinuxMint MacOSX Mageia Mandriva Manjaro Minix MirBSD NeXTSTEP NetBSD OPENSTEP OSF1 OpenBSD OpenDarwin OpenIndiana OpenMandriva OpenServer OpenSuSE OpenVMS Oracle PC-BSD Peanut Pidora Plan9 QNX Raspbian RedHat Scientific Slackware SmartOS Solaris SuSE SunOS Syllable Tru64 UNIXv7 Ubuntu Ultrix UnixWare Xenix YellowDog aLinux   10987 pages apropos Keyword Search (all sections) Output format html ascii pdf view pdf save postscript

unlockpt(3C)							  unlockpt(3C)

NAME
       unlockpt - unlock a STREAMS pty master and slave pair

SYNOPSIS
DESCRIPTION
       The  passed  parameter,	fildes,	 is a file descriptor that is returned
       from a successful open of a master pty  (pseudo-terminal)  device.  The
       function	 unlocks  a  slave pty from its associated master counterpart.
       It does this by clearing a lock flag so	that  the  slave  pty  can  be
       opened.	For  security  reason,	grantpt(3C)  must  be  executed before
       unlockpt(3C).

RETURN VALUE
       Upon successful completion, the function returns a value of  0  (zero).
       Otherwise, it returns a value of -1.

       Failure may result under the following conditions:

	      ·	 The  file descriptor specified by the fildes parameter is not
		 an open file descriptor.

	      ·	 The file descriptor specified by the fildes parameter is  not
		 associated with a STREAMS pty master device.

EXAMPLES
       The following example shows how is typically used.

		   ...

AUTHOR
       was developed by HP and OSF.

SEE ALSO
       open(2), grantpt(3C), ptsname(3C), ptm(7), pts(7), ptem(7).

								  unlockpt(3C)

Vote for polarhome