grantpt(3p) - phpMan

GRANTPT(P)                                                          GRANTPT(P)



NAME
       grantpt - grant access to the slave pseudo-terminal device

SYNOPSIS
       #include <stdlib.h>

       int grantpt(int fildes);


DESCRIPTION
       The grantpt() function shall change the mode and ownership of the slave pseudo-ter-
       minal device associated with its master  pseudo-terminal  counterpart.  The  fildes
       argument  is  a file descriptor that refers to a master pseudo-terminal device. The
       user ID of the slave shall be set to the real UID of the calling  process  and  the
       group ID shall be set to an unspecified group ID.  The permission mode of the slave
       pseudo-terminal shall be set to readable and writable by the owner, and writable by
       the group.

       The  behavior  of  the  grantpt()  function  is  unspecified if the application has
       installed a signal handler to catch SIGCHLD signals.

RETURN VALUE
       Upon successful completion, grantpt() shall return 0; otherwise, it shall return -1
       and set errno to indicate the error.

ERRORS
       The grantpt() function may fail if:

       EBADF  The fildes argument is not a valid open file descriptor.

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

       EACCES The corresponding slave pseudo-terminal device could not be accessed.


       The following sections are informative.

EXAMPLES
       None.

APPLICATION USAGE
       None.

RATIONALE
       None.

FUTURE DIRECTIONS
       None.

SEE ALSO
       open()  ,   ptsname()   ,   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 .



POSIX                                2003                           GRANTPT(P)

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