1b90ed4fcc
1998-06-18 Martin Baulig <baulig@taurus.uni-trier.de> * sysdeps/linux/*.c: Reverted some stuff from 06-07-1998 since it was too buggy.
121 lines
3.7 KiB
C
121 lines
3.7 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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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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char buffer [BUFSIZ], input [BUFSIZ], *tmp;
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int fd = 0, nread;
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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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sprintf (input, "/proc/%d/status", pid);
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fd = open (input, O_RDONLY);
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if (fd == -1)
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glibtop_error_r (server, "open (%s): %s",
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input, strerror (errno));
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nread = read (fd, buffer, BUFSIZ);
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if (nread == -1)
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glibtop_error_r (server, "read (%s): %s",
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input, strerror (errno));
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buffer [nread] = 0;
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close (fd);
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/* Search substring 'Pid:' */
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tmp = strstr (buffer, "Pid:");
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if (tmp == NULL) return;
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sscanf (tmp, "\nPid: %u\nPPid: %u\nUid: %u %u %*u %*u\n"
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"Gid: %u %u %*u %*u\n", &buf->pid, &buf->ppid,
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&buf->uid, &buf->euid, &buf->gid, &buf->egid);
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sprintf (input, "/proc/%d/stat", pid);
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fd = open (input, O_RDONLY);
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if (fd == -1)
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glibtop_error_r (server, "open (%s): %s",
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input, strerror (errno));
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nread = read (fd, buffer, BUFSIZ);
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if (nread == -1)
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glibtop_error_r (server, "read (%s): %s",
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input, strerror (errno));
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buffer [nread] = 0;
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close (fd);
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/* This is from guile-utils/gtop/proc/readproc.c */
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/* split into "PID (cmd" and "<rest>" */
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tmp = strrchr (buffer, ')');
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*tmp = '\0'; /* replace trailing ')' with NUL */
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/* parse these two strings separately, skipping the leading "(". */
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sscanf(tmp + 2, /* skip space after ')' too */
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"%*c %*d %d %d %d %d %*u %*u %*u %*u %*u "
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"%*d %*d %*d %*d %d %d",
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&buf->pgrp, &buf->session, &buf->tty, &buf->tpgid,
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&buf->priority, &buf->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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