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This commit is contained in:
Martin Baulig
1998-05-19 18:19:50 +00:00
commit 33cdc01c1d
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sysdeps/osf1/open.c Normal file
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/* $Id$ */
/* Copyright (C) 1995, 1996, 1997 Free Software Foundation, Inc.
This file is part of the Gnome Top Library.
Contributed by Martin Baulig <martin@home-of-linux.org>, April 1998.
The Gnome Top Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The Gnome Top Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include <glibtop/open.h>
#include <unistd.h>
#include <sys/types.h>
/* Opens pipe to gtop server. Returns 0 on success and -1 on error. */
/* !!! THIS FUNCTION RUNS SUID ROOT - CHANGE WITH CAUTION !!! */
void
glibtop_open (glibtop *server, const char *program_name)
{
/* !!! WE ARE ROOT HERE - CHANGE WITH CAUTION !!! */
memset (server, 0, sizeof (glibtop));
server->name = program_name;
server->machine.uid = getuid ();
server->machine.euid = geteuid ();
server->machine.gid = getgid ();
server->machine.egid = getegid ();
server->machine.proctable_entries = table (TBL_PROCINFO, 0, NULL, INT_MAX, 0);
/* Drop priviledges; we only become root when necessary.
setreuid (ruid, euid) - set real and effective user id;
setregid (rgid, egid) - set real and effective group id;
*/
if (setreuid (server->machine.euid, server->machine.uid))
_exit (1);
if (setregid (server->machine.egid, server->machine.gid))
_exit (1);
/* !!! END OF SUID ROOT PART !!! */
/* Our effective uid is now those of the user invoking the server,
so we do no longer have any priviledges.
*/
}