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/* $Id: procuid.c,v 1.18 2003/10/19 16:55:35 carlos Exp $ */
/* 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 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 General Public License
for more details.
You should have received a copy of the GNU General Public License
along with LibGTop; see the file COPYING. 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/procuid.h>
#include "kernel.h"
static const unsigned long _glibtop_sysdeps_proc_uid =
(1 << GLIBTOP_PROC_UID_UID) + (1 << GLIBTOP_PROC_UID_EUID) +
(1 << GLIBTOP_PROC_UID_GID) + (1 << GLIBTOP_PROC_UID_EGID) +
(1 << GLIBTOP_PROC_UID_PID) + (1 << GLIBTOP_PROC_UID_PPID) +
(1 << GLIBTOP_PROC_UID_PGRP) + (1 << GLIBTOP_PROC_UID_SESSION) +
(1 << GLIBTOP_PROC_UID_TTY) + (1 << GLIBTOP_PROC_UID_TPGID) +
(1 << GLIBTOP_PROC_UID_PRIORITY) + (1 << GLIBTOP_PROC_UID_NICE);
/* Init function. */
void
glibtop_init_proc_uid_s (glibtop *server)
{
server->sysdeps.proc_uid = _glibtop_sysdeps_proc_uid;
}
#define LINUX_VERSION(x,y,z) (0x10000*(x) + 0x100*(y) + z)
/* Provides detailed information about a process. */
void
glibtop_get_proc_uid_s (glibtop *server, glibtop_proc_uid *buf,
pid_t pid)
{
union table tbl;
long def_priority, priority, nice;
glibtop_init_s (&server, GLIBTOP_SYSDEPS_PROC_UID, 0);
memset (buf, 0, sizeof (glibtop_proc_uid));
if (table (TABLE_PROC_UID, &tbl, &pid))
glibtop_error_io_r (server, "table(TABLE_PROC_UID)");
buf->flags = _glibtop_sysdeps_proc_uid;
buf->uid = tbl.proc_uid.uid;
buf->euid = tbl.proc_uid.euid;
buf->gid = tbl.proc_uid.gid;
buf->egid = tbl.proc_uid.egid;
buf->pid = tbl.proc_uid.pid;
buf->ppid = tbl.proc_uid.ppid;
buf->pgrp = tbl.proc_uid.pgrp;
buf->session = tbl.proc_uid.session;
buf->tty = tbl.proc_uid.tty;
buf->tpgid = tbl.proc_uid.tpgid;
/* scale priority and nice values from timeslices to -20..20 */
/* to make it look like a "normal" unix priority/nice value */
def_priority = tbl.proc_uid.def_priority;
priority = tbl.proc_uid.counter;
priority = 20 - (priority * 10 + def_priority / 2) / def_priority;
nice = tbl.proc_uid.priority;
nice = 20 - (nice * 20 + def_priority / 2) / def_priority;
buf->priority = (int) priority;
buf->nice = (int) nice;
if (buf->tty == 0)
/* the old notty val, update elsewhere bef. moving to 0 */
buf->tty = -1;
if (server->os_version_code < LINUX_VERSION(1,3,39)) {
/* map old meanings to new */
buf->priority = 2*15 - buf->priority;
buf->nice = 15 - buf->nice;
}
if (server->os_version_code < LINUX_VERSION(1,1,30) && buf->tty != -1)
/* when tty wasn't full devno */
buf->tty = 4*0x100 + buf->tty;
buf->flags = _glibtop_sysdeps_proc_uid;
}
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