132 lines
3.5 KiB
C
132 lines
3.5 KiB
C
/* -*- 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/interfaces.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <sys/ioctl.h>
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#include <netinet/in.h>
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#include <net/if.h>
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static const unsigned long _glibtop_sysdeps_interface_names =
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(1L << GLIBTOP_INTERFACE_NAMES_NUMBER) +
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(1L << GLIBTOP_INTERFACE_NAMES_SIZE);
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/* Init function. */
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int
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glibtop_init_interface_names_s (glibtop *server)
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{
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server->sysdeps.interface_names = _glibtop_sysdeps_interface_names;
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return 0;
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}
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/* Provides network statistics. */
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glibtop_interface *
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glibtop_get_interface_names_s (glibtop *server, glibtop_array *array,
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u_int64_t interface, u_int64_t number,
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u_int64_t instance, u_int64_t strategy)
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{
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GPtrArray *parray;
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u_int64_t strategy_flags;
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glibtop_interface *retval = NULL;
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int skfd, i, n, numreqs = 30;
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struct ifconf ifc;
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struct ifreq *ifr;
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glibtop_init_s (&server, GLIBTOP_SYSDEPS_INTERFACE_NAMES, 0);
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memset (array, 0, sizeof (glibtop_array));
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strategy_flags = strategy & GLIBTOP_STRATEGY_FLAGS_MASK;
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strategy &= ~GLIBTOP_STRATEGY_FLAGS_MASK;
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parray = g_ptr_array_new ();
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skfd = socket (AF_INET, SOCK_DGRAM, 0);
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if (!skfd) {
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glibtop_error_io_r (server, "socket (AF_INET, SOCK_DGRAM, 0)");
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return NULL;
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}
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ifc.ifc_buf = NULL;
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for (;;) {
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ifc.ifc_len = sizeof (struct ifreq) * numreqs;
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ifc.ifc_buf = glibtop_realloc_r (server, ifc.ifc_buf, ifc.ifc_len);
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if (ioctl (skfd, SIOCGIFCONF, &ifc) < 0) {
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glibtop_error_io_r (server, "SIOCGIFCONF");
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glibtop_free_r (server, ifc.ifc_buf);
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return NULL;
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}
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if (ifc.ifc_len == sizeof (struct ifreq) * numreqs) {
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/* assume it overflowed and try again */
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numreqs += 10;
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continue;
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}
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break;
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}
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ifr = ifc.ifc_req;
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for (n = 0; n < ifc.ifc_len; n += sizeof(struct ifreq), ifr++) {
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glibtop_interface *interface_ptr;
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if (strchr (ifr->ifr_name, ':')) {
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/* This is a logical interface */
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if (!(strategy_flags & GLIBTOP_INTERFACES_INCLUDE_LOGICAL))
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continue;
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}
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interface_ptr = g_new0 (glibtop_interface, 1);
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strcpy (interface_ptr->name, ifr->ifr_name);
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g_ptr_array_add (parray, interface_ptr);
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}
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glibtop_free_r (server, ifc.ifc_buf);
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close (skfd);
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retval = glibtop_calloc_r (server, parray->len, sizeof (glibtop_interface));
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for (i = 0; i < parray->len; i++)
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retval [i] = *(glibtop_interface *) parray->pdata [i];
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array->number = parray->len;
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array->size = sizeof (glibtop_interface);
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array->total = array->number * array->size;
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g_ptr_array_free (parray, TRUE);
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return retval;
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}
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