ptsname(3p) - phpMan

PTSNAME(3P)                POSIX Programmer's Manual               PTSNAME(3P)

PROLOG
       This  manual  page is part of the POSIX Programmer's Manual.  The Linux
       implementation of this interface may differ (consult the  corresponding
       Linux  manual page for details of Linux behavior), or the interface may
       not be implemented on Linux.
NAME
       ptsname - get name of the slave pseudo-terminal device
SYNOPSIS
       #include <stdlib.h>
       char *ptsname(int fildes);

DESCRIPTION
       The ptsname() function shall return the name of the slave pseudo-termi-
       nal  device associated with a master pseudo-terminal device. The fildes
       argument is a file descriptor that refers to  the  master  device.  The
       ptsname()  function  shall  return a pointer to a string containing the
       pathname of the corresponding slave device.
       The ptsname() function need not be reentrant. A function  that  is  not
       required to be reentrant is not required to be thread-safe.
RETURN VALUE
       Upon  successful  completion,  ptsname()  shall  return  a pointer to a
       string which is the name of  the  pseudo-terminal  slave  device.  Upon
       failure,  ptsname()  shall  return a null pointer.  This could occur if
       fildes is an invalid file descriptor or if the slave device  name  does
       not exist in the file system.
ERRORS
       No errors are defined.
       The following sections are informative.
EXAMPLES
       None.
APPLICATION USAGE
       The  value returned may point to a static data area that is overwritten
       by each call to ptsname().
RATIONALE
       None.
FUTURE DIRECTIONS
       None.
SEE ALSO
       grantpt(), open(), ttyname(), unlockpt(), the Base  Definitions  volume
       of IEEE Std 1003.1-2001, <stdlib.h>
COPYRIGHT
       Portions  of  this text are reprinted and reproduced in electronic form
       from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology
       --  Portable  Operating  System  Interface (POSIX), The Open Group Base
       Specifications Issue 6, Copyright (C) 2001-2003  by  the  Institute  of
       Electrical  and  Electronics  Engineers, Inc and The Open Group. In the
       event of any discrepancy between this version and the original IEEE and
       The  Open Group Standard, the original IEEE and The Open Group Standard
       is the referee document. The original Standard can be  obtained  online
       at http://www.opengroup.org/unix/online.html .

IEEE/The Open Group                  2003                          PTSNAME(3P)