ptsname(3C)                                              ptsname(3C)


       NAME
             ptsname - get name of the slave pseudo-terminal device

       SYNOPSIS
             #include <stdio.h>
             #include <sys/ptms.h>
             char *ptsname(int fildes);

       DESCRIPTION
             The function ptsname returns the name of the slave pseudo-
             terminal device associated with a master pseudo-terminal
             device.  fildes is a file descriptor returned from a
             successful open of the master device.  ptsname returns a
             pointer to a string containing the null-terminated path name
             of the slave device of the form /dev/pts/N, where N is an
             integer between 0 and 255.

          Return Values
             Upon successful completion, the function ptsname returns a
             pointer to a string which is the name of the pseudo-terminal
             slave device.  This value points to a static data area that is
             overwritten by each call to ptsname.  Upon failure, ptsname
             returns NULL.  This could occur if fildes is an invalid file
             descriptor or if the slave device name does not exist in the
             file system.

       REFERENCES
             grantpt(3C), open(2), pty(7), ttyname(3C), unlockpt(3C)




















                           Copyright 1994 Novell, Inc.               Page 1