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/* $Id$ */

/* Copyright (C) 1998-99 Martin Baulig
   This file is part of LibGTop 1.0.

   Contributed by Martin Baulig <martin@home-of-linux.org>, April 1998.

   LibGTop 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.

   LibGTop 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 LibGTop; 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.h>
#include <glibtop/error.h>
#include <glibtop/procstate.h>

#include <glibtop_suid.h>

static const unsigned long _glibtop_sysdeps_proc_state =
(1 << GLIBTOP_PROC_STATE_CMD) + (1 << GLIBTOP_PROC_STATE_STATE) +
(1 << GLIBTOP_PROC_STATE_UID);

/* Init function. */

void
glibtop_init_proc_state_p (glibtop *server)
{
	server->sysdeps.proc_state = _glibtop_sysdeps_proc_state;
}

/* Provides detailed information about a process. */

void
glibtop_get_proc_state_p (glibtop *server, glibtop_proc_state *buf,
			  pid_t pid)
{
	struct tbl_procinfo procinfo;
	int ret;

	glibtop_init_p (server, GLIBTOP_SYSDEPS_PROC_STATE, 0);
	
	memset (buf, 0, sizeof (glibtop_proc_state));

	/* !!! THE FOLLOWING CODE RUNS SUID ROOT - CHANGE WITH CAUTION !!! */

	glibtop_suid_enter (server);
	
	ret = table (TBL_PROCINFO, pid, (char *) &procinfo, 1,
		     sizeof (struct tbl_procinfo)); 

	glibtop_suid_leave (server);
		     
	/* !!! END OF SUID ROOT PART !!! */
	
	if (ret != 1) return;

	strncpy (buf->cmd, procinfo.pi_comm, sizeof (buf->cmd)-1);

	buf->cmd [sizeof (buf->cmd)-1] = 0;

	buf->state = procinfo.pi_status;

	buf->uid = procinfo.pi_uid;
	buf->gid = procinfo.pi_svgid;

	buf->flags = _glibtop_sysdeps_proc_state;
}