osf1 man page for unlockpt

unlockpt(3)						     Library Functions Manual						       unlockpt(3)

NAME
       unlockpt - Unlocks a pseudoterminal master and slave pair

LIBRARY
       Standard C Library (libc)

SYNOPSIS
       #include <stdlib.h>

       int unlockpt(	  int mastfd);

STANDARDS
       Interfaces documented on this reference page conform to industry standards as follows:

       unlockpt(): XSH5.0

       Refer to the standards(5) reference page for more information about industry standards and associated tags.

PARAMETERS
       Specifies a file descriptor that is returned from a successful open of the master pseudoterminal device.

DESCRIPTION
       The  unlockpt()	function  unlocks  a slave pseudoterminal from its associated master counterpart.  It does this by clearing a lock flag so
       that the slave device can be opened.

RETURN VALUE
       Upon successful completion, the unlockpt() function returns a value of 0.  Otherwise, it returns a value of -1 and sets errno  to  indicate
       the error.

ERRORS
       The unlockpt() function sets errno to the specified values for the following conditions:

       The  file descriptor specified by the mastfd parameter is not an open file descriptor.  The file descriptor specified by the mastfd parame-
       ter is not associated with a master pseudoterminal device.

RELATED INFORMATION
       Functions: openpty(3)

       Standards: standards(5) delim off

																       unlockpt(3)