Unix/Linux Go Back    


Linux 2.6 - man page for grantpt (linux section 3posix)

Linux & Unix Commands - Search Man Pages
Man Page or Keyword Search:   man
Select Man Page Set:       apropos Keyword Search (sections above)


GRANTPT(P)			    POSIX Programmer's Manual			       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-terminal
       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 orig-
       inal Standard can be obtained online at http://www.opengroup.org/unix/online.html .

IEEE/The Open Group			       2003				       GRANTPT(P)
Unix & Linux Commands & Man Pages : ©2000 - 2018 Unix and Linux Forums


All times are GMT -4. The time now is 09:50 PM.