c60d1d5449
1998-06-13 Martin Baulig <martin@home-of-linux.org> The code in this directory fetches all information directly from the kernel. It uses the new table () system call from the `kernel' directory.
101 lines
3.3 KiB
C
101 lines
3.3 KiB
C
/* $Id$ */
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/* Copyright (C) 1995, 1996, 1997 Free Software Foundation, Inc.
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This file is part of the Gnome Top Library.
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Contributed by Martin Baulig <martin@home-of-linux.org>, April 1998.
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The Gnome Top Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The Gnome Top Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include <glibtop.h>
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#include <glibtop/error.h>
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#include <glibtop/procuid.h>
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#include "kernel.h"
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static const unsigned long _glibtop_sysdeps_proc_uid =
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(1 << GLIBTOP_PROC_UID_UID) + (1 << GLIBTOP_PROC_UID_EUID) +
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(1 << GLIBTOP_PROC_UID_GID) + (1 << GLIBTOP_PROC_UID_EGID) +
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(1 << GLIBTOP_PROC_UID_PID) + (1 << GLIBTOP_PROC_UID_PPID) +
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(1 << GLIBTOP_PROC_UID_PGRP) + (1 << GLIBTOP_PROC_UID_SESSION) +
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(1 << GLIBTOP_PROC_UID_TTY) + (1 << GLIBTOP_PROC_UID_TPGID) +
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(1 << GLIBTOP_PROC_UID_PRIORITY) + (1 << GLIBTOP_PROC_UID_NICE);
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#define LINUX_VERSION(x,y,z) (0x10000*(x) + 0x100*(y) + z)
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/* Provides detailed information about a process. */
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void
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glibtop_get_proc_uid_s (glibtop *server, glibtop_proc_uid *buf, pid_t pid)
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{
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union table tbl;
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long def_priority, priority, nice;
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glibtop_init_r (&server, 0, 0);
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memset (buf, 0, sizeof (glibtop_proc_uid));
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if (pid == 0) {
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/* Client is only interested in the flags. */
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buf->flags = _glibtop_sysdeps_proc_uid;
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return;
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}
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if (table (TABLE_PROC_UID, &tbl, &pid))
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glibtop_error_r (server, "table(TABLE_PROC_UID): %s\n", strerror (errno));
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buf->flags = _glibtop_sysdeps_proc_uid;
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buf->uid = tbl.proc_uid.uid;
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buf->euid = tbl.proc_uid.euid;
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buf->gid = tbl.proc_uid.gid;
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buf->egid = tbl.proc_uid.egid;
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buf->pid = tbl.proc_uid.pid;
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buf->ppid = tbl.proc_uid.ppid;
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buf->pgrp = tbl.proc_uid.pgrp;
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buf->session = tbl.proc_uid.session;
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buf->tty = tbl.proc_uid.tty;
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buf->tpgid = tbl.proc_uid.tpgid;
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/* scale priority and nice values from timeslices to -20..20 */
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/* to make it look like a "normal" unix priority/nice value */
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def_priority = tbl.proc_uid.def_priority;
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priority = tbl.proc_uid.counter;
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priority = 20 - (priority * 10 + def_priority / 2) / def_priority;
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nice = tbl.proc_uid.priority;
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nice = 20 - (nice * 20 + def_priority / 2) / def_priority;
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buf->priority = (int) priority;
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buf->nice = (int) nice;
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if (buf->tty == 0)
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/* the old notty val, update elsewhere bef. moving to 0 */
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buf->tty = -1;
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if (server->os_version_code < LINUX_VERSION(1,3,39)) {
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/* map old meanings to new */
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buf->priority = 2*15 - buf->priority;
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buf->nice = 15 - buf->nice;
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}
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if (server->os_version_code < LINUX_VERSION(1,1,30) && buf->tty != -1)
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/* when tty wasn't full devno */
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buf->tty = 4*0x100 + buf->tty;
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buf->flags = _glibtop_sysdeps_proc_uid;
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}
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