unlockpt man page on SmartOS

unlockpt man page on SmartOS

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UNLOCKPT(3C)							  UNLOCKPT(3C)

NAME
       unlockpt - unlock a pseudo-terminal master/slave pair

SYNOPSIS
       #include <stdlib.h>

       int unlockpt(int fildes);

DESCRIPTION
       The  unlockpt() function unlocks the slave pseudo-terminal device asso‐
       ciated with the master to which fildes refers.

       Portable applications must call unlockpt()  before  opening  the	 slave
       side of a pseudo-terminal device.

RETURN VALUES
       Upon successful completion, unlockpt() returns 0. Otherwise, it returns
       −1 and sets errno to indicate the error.

ERRORS
       The unlockpt() function may fail if:

       EBADF
		 The fildes argument is not a file descriptor open  for	 writ‐
		 ing.

       EINVAL
		 The  fildes  argument is not associated with a master pseudo-
		 terminal device.

ATTRIBUTES
       See attributes(5) for descriptions of the following attributes:

       ┌────────────────────┬─────────────────┐
       │  ATTRIBUTE TYPE    │ ATTRIBUTE VALUE │
       ├────────────────────┼─────────────────┤
       │Interface Stability │ Standard	      │
       ├────────────────────┼─────────────────┤
       │MT-Level	    │ Safe	      │
       └────────────────────┴─────────────────┘

SEE ALSO
       open(2), grantpt(3C), ptsname(3C), attributes(5), standards(5)

       STREAMS Programming Guide

				 Aug 14, 2002			  UNLOCKPT(3C)

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