PT_CHOWN(5)                                               GNU C Library                                              PT_CHOWN(5)



NAME
       pt_chown - helper function for grantpt(3), changes ownship and permissions of pseudotty

SYNOPSIS
       /usr/lib/pt_chown


DESCRIPTION
       pt_chown  is the helper program for the 'grantpt' function.  It is not intended to be run directly from the command line.
       pt_chown sets the owner, group and access permission of the slave pseudo terminal corresponding to the master pseudo ter-
       minal  passed on file descriptor so that the pseudo terminal can be used by the calling process. This means programs like
       'xterm' and 'screen' do not have to be setuid to get a pty. (There may be other reasons why they  need  privileges.)   If
       you are using a 2.1 or newer Linux kernel with the 'devptsfs' or `devfs' filesystems providing pty slaves, you don't need
       this program; otherwise you do.  The source for 'pt_chown' is in 'login/programs/pt_chown.c'.

       It is installed setuid root.


OPTIONS
       pt_chown takes no arguments.


RETURN CODES
       pt_chown has the following return codes:

       EBADF  The file descriptor is not a valid master pseudo terminal.


       EINVAL The device is not a character device.


       EACCES Can't change device owner and group or device permissions.


       0      The owner, group, and permissions were successfully changed.


BUGS
       Report bugs using the glibcbug script to bugsATgnu.org


SEE ALSO
       grantpt(3)




PTY Control                                                2003-03-21                                                PT_CHOWN(5)