This is now a LibGTop backend which can be loaded additionally to the
2000-01-23 Martin Baulig <martin@home-of-linux.org> This is now a LibGTop backend which can be loaded additionally to the normal Linux sysdeps code. * open.c, close.c: Removed. * shm_limits.c, msg_limits.c, sem_limits.c, ppp.c: Removed. * siglist.c, sysinfo.c: Removed. * backend-kernel.c: New file. * glibtop-backend-private.h: New file. * libgtop-kernel.backend: New file. * backend-kernel.pl: New file. Automatically creates `backend-kernel.h'. * marshal.pl: New file. Automatically creates `marshal.c'. * glibtop_server.h: Replaced all `GLIBTOP_SUID_<feature>' constants with `GLIBTOP_IMPL_<feature>' ones; they're used in marshal.c to find out which features this backend implements. * *.c: Renamed all `glibtop_get_<feature>_s' functions to `glibtop_get_<feature>_k' and all `glibtop_init_<feature>_s' ones to `glibtop_init_<feature>_k'.
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Martin Baulig
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Martin Baulig
Martin Baulig
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@@ -1,208 +0,0 @@
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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 4 -*- */
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/* $Id$ */
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/* Copyright (C) 1998-99 Martin Baulig
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This file is part of LibGTop 1.0.
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Contributed by Martin Baulig <martin@home-of-linux.org>, October 1998.
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LibGTop is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License,
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or (at your option) any later version.
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LibGTop is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with LibGTop; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA.
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*/
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#include <glibtop.h>
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#include <glibtop/error.h>
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#include <glibtop/xmalloc.h>
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#include <glibtop/ppp.h>
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#include <linux/isdn.h>
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#include <sys/ioctl.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <ctype.h>
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#include <glib.h>
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static const unsigned long _glibtop_sysdeps_ppp =
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(1L << GLIBTOP_PPP_STATE) + (1L << GLIBTOP_PPP_BYTES_IN) +
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(1L << GLIBTOP_PPP_BYTES_OUT);
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/* Init function. */
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int
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glibtop_init_ppp_s (glibtop *server)
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{
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server->sysdeps.ppp = _glibtop_sysdeps_ppp;
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return 0;
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}
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static int
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get_ISDN_stats (glibtop *server, int *in, int *out)
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{
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unsigned long *isdn_stats, *ptr;
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int fd, i;
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*in = *out = 0;
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isdn_stats = glibtop_calloc_r (server, ISDN_MAX_CHANNELS * 2,
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sizeof (unsigned long));
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fd = open ("/dev/isdninfo", O_RDONLY);
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if (fd < 0) {
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glibtop_free_r (server, isdn_stats);
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return FALSE;
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}
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if ((ioctl (fd, IIOCGETCPS, isdn_stats) < 0) && (errno != 0)) {
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glibtop_free_r (server, isdn_stats);
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close (fd);
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return FALSE;
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}
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for (i = 0, ptr = isdn_stats; i < ISDN_MAX_CHANNELS; i++) {
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*in += *ptr++; *out += *ptr++;
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}
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glibtop_free_r (server, isdn_stats);
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close (fd);
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return TRUE;
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}
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static int is_ISDN_on (glibtop *server, int *online)
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{
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FILE *f = 0;
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char buffer [BUFSIZ], *p;
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int i;
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/* Perhaps I should try to explain this code a little bit.
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*
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* ------------------------------------------------------------
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* This is from the manpage of isdninfo(4):
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*
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* DESCRIPTION
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* /dev/isdninfo is a character device with major number 45
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* and minor number 255. It delivers status information from
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* the Linux ISDN subsystem to user level.
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*
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* DATA FORMAT
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* When reading from this device, the current status of the
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* Linux ISDN subsystem is delivered in 6 lines of text. Each
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* line starts with a tag string followed by a colon and
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* whitespace. After that the status values are appended sep-
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* arated by whitespace.
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*
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* flags is the tag of line 5. In this line for every driver
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* slot, it's B-Channel status is shown. If no driver
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* is registered in a slot, a ? is shown. For every
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* established B-Channel of the driver, a bit is set
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* in the shown value. The driver's first channel is
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* mapped to bit 0, the second channel to bit 1 and so
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* on.
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* ------------------------------------------------------------
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*
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* So we open /dev/isdninfo, discard the first four lines of text
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* and then check whether we have something that is not `0' or `?'
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* in one of the flags fields.
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*
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* Sounds complicated, but I don't see any other way to check whether
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* we are connected. Also, this is the method some other ISDN tools
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* for Linux use.
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*
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* Martin
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*/
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f = fopen ("/dev/isdninfo", "r");
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if (!f) return FALSE;
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for (i = 0; i < 5; i++) {
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if (fgets (buffer, BUFSIZ, f) == NULL) {
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fclose (f);
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return FALSE;
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}
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}
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if (strncmp (buffer, "flags:", 6)) {
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fclose (f);
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return FALSE;
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}
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p = buffer+6;
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while (*p) {
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char *end = p;
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if (isspace (*p)) {
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p++;
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continue;
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}
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for (end = p; *end && !isspace (*end); end++)
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;
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if (*end == 0)
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break;
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else
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*end = 0;
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if (!strcmp (p, "?") || !strcmp (p, "0")) {
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p = end+1;
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continue;
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}
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fclose (f);
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*online = TRUE;
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return TRUE;
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}
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fclose (f);
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*online = FALSE;
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return TRUE;
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}
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/* Provides PPP/ISDN information. */
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int
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glibtop_get_ppp_s (glibtop *server, glibtop_ppp *buf, unsigned short device,
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unsigned short isdn, const char *lockfile)
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{
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int in, out, online;
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glibtop_init_s (&server, GLIBTOP_SYSDEPS_PPP, 0);
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memset (buf, 0, sizeof (glibtop_ppp));
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if (is_ISDN_on (server, &online)) {
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buf->state = online ? GLIBTOP_PPP_STATE_ONLINE :
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GLIBTOP_PPP_STATE_HANGUP;
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buf->flags |= (1L << GLIBTOP_PPP_STATE);
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}
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if (get_ISDN_stats (server, &in, &out)) {
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buf->bytes_in = in;
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buf->bytes_out = out;
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buf->flags |= (1L << GLIBTOP_PPP_BYTES_IN) |
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(1L << GLIBTOP_PPP_BYTES_OUT);
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}
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return 0;
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}
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