a5dd7e9063
It changes the return values of all sysdeps functions which were previosly returning void to int. This is the first step to implement better error handling in LibGTop. Martin 1999-10-24 Martin Baulig <martin@home-of-linux.org> * include/glibtop/*.h (glibtop_get_*, glibtop_init*): Changed the return value of all `glibtop_get_<feature>_* ()' and all `glibtop_init_<feature>_* ()' functions from void to int. * features.def: Reflect changes of the return values. * sysdeps/*/*.c: Reflect changes of the return values.
215 lines
6.3 KiB
C
215 lines
6.3 KiB
C
/* $Id$ */
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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/netload.h>
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#include <glibtop_suid.h>
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#include <net/if.h>
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#include <net/if_dl.h>
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#include <net/if_types.h>
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#ifdef HAVE_NET_IF_VAR_H
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#include <net/if_var.h>
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#endif
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#include <netinet/in.h>
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#include <netinet/in_var.h>
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static const unsigned long _glibtop_sysdeps_netload =
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(1L << GLIBTOP_NETLOAD_IF_FLAGS) +
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(1L << GLIBTOP_NETLOAD_MTU) +
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(1L << GLIBTOP_NETLOAD_SUBNET) +
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(1L << GLIBTOP_NETLOAD_ADDRESS) +
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(1L << GLIBTOP_NETLOAD_PACKETS_IN) +
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(1L << GLIBTOP_NETLOAD_PACKETS_OUT) +
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(1L << GLIBTOP_NETLOAD_PACKETS_TOTAL) +
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(1L << GLIBTOP_NETLOAD_BYTES_IN) +
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(1L << GLIBTOP_NETLOAD_BYTES_OUT) +
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(1L << GLIBTOP_NETLOAD_BYTES_TOTAL) +
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(1L << GLIBTOP_NETLOAD_ERRORS_IN) +
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(1L << GLIBTOP_NETLOAD_ERRORS_OUT) +
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(1L << GLIBTOP_NETLOAD_ERRORS_TOTAL) +
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(1L << GLIBTOP_NETLOAD_COLLISIONS);
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/* nlist structure for kernel access */
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static struct nlist nlst [] = {
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{ "_ifnet" },
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{ 0 }
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};
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/* Init function. */
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int
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glibtop_init_netload_p (glibtop *server)
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{
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server->sysdeps.netload = _glibtop_sysdeps_netload;
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if (kvm_nlist (server->machine.kd, nlst) != 0)
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glibtop_error_io_r (server, "kvm_nlist");
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}
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/* Provides Network statistics. */
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int
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glibtop_get_netload_p (glibtop *server, glibtop_netload *buf,
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const char *interface)
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{
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struct ifnet ifnet;
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u_long ifnetaddr, ifnetfound, ifaddraddr;
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struct sockaddr *sa;
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char tname [16];
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union {
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struct ifaddr ifa;
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struct in_ifaddr in;
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} ifaddr;
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glibtop_init_p (server, (1L << GLIBTOP_SYSDEPS_NETLOAD), 0);
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memset (buf, 0, sizeof (glibtop_netload));
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if (kvm_read (server->machine.kd, nlst [0].n_value,
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&ifnetaddr, sizeof (ifnetaddr)) != sizeof (ifnetaddr))
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glibtop_error_io_r (server, "kvm_read (ifnet)");
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ifaddraddr = 0;
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while (ifnetaddr || ifaddraddr) {
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struct sockaddr_in *sin;
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register char *cp;
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if (ifaddraddr == 0) {
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ifnetfound = ifnetaddr;
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if (kvm_read (server->machine.kd, ifnetaddr, &ifnet,
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sizeof (ifnet)) != sizeof (ifnet))
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glibtop_error_io_r (server, "kvm_read (ifnetaddr)");
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#if defined(__FreeBSD__) || defined(__bsdi__)
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if (kvm_read (server->machine.kd, (u_long) ifnet.if_name,
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tname, 16) != 16)
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glibtop_error_io_r (server, "kvm_read (if_name)");
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#else
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strncpy (tname, ifnet.if_xname, 16);
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tname [15] = 0;
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#endif
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#if defined(__FreeBSD__) && (__FreeBSD_version >= 300000)
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ifaddraddr = (u_long) ifnet.if_addrhead.tqh_first;
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#elif defined(__FreeBSD__) || defined(__bsdi__)
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ifaddraddr = (u_long) ifnet.if_addrlist;
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#else
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ifaddraddr = (u_long) ifnet.if_addrlist.tqh_first;
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#endif
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}
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if (ifaddraddr) {
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if ((kvm_read (server->machine.kd, ifaddraddr, &ifaddr,
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sizeof (ifaddr)) != sizeof (ifaddr)))
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glibtop_error_io_r (server, "kvm_read (ifaddraddr)");
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#define CP(x) ((char *)(x))
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cp = (CP(ifaddr.ifa.ifa_addr) - CP(ifaddraddr)) +
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CP(&ifaddr); sa = (struct sockaddr *)cp;
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if (!strcmp (interface, tname) && (sa->sa_family == AF_INET)) {
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sin = (struct sockaddr_in *)sa;
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if (ifnet.if_flags & IFF_UP)
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buf->if_flags |= GLIBTOP_IF_FLAGS_UP;
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if (ifnet.if_flags & IFF_BROADCAST)
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buf->if_flags |= GLIBTOP_IF_FLAGS_BROADCAST;
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if (ifnet.if_flags & IFF_DEBUG)
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buf->if_flags |= GLIBTOP_IF_FLAGS_DEBUG;
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if (ifnet.if_flags & IFF_LOOPBACK)
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buf->if_flags |= GLIBTOP_IF_FLAGS_LOOPBACK;
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if (ifnet.if_flags & IFF_POINTOPOINT)
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buf->if_flags |= GLIBTOP_IF_FLAGS_POINTOPOINT;
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if (ifnet.if_flags & IFF_RUNNING)
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buf->if_flags |= GLIBTOP_IF_FLAGS_RUNNING;
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if (ifnet.if_flags & IFF_NOARP)
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buf->if_flags |= GLIBTOP_IF_FLAGS_NOARP;
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if (ifnet.if_flags & IFF_PROMISC)
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buf->if_flags |= GLIBTOP_IF_FLAGS_PROMISC;
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if (ifnet.if_flags & IFF_ALLMULTI)
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buf->if_flags |= GLIBTOP_IF_FLAGS_ALLMULTI;
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if (ifnet.if_flags & IFF_OACTIVE)
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buf->if_flags |= GLIBTOP_IF_FLAGS_OACTIVE;
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if (ifnet.if_flags & IFF_SIMPLEX)
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buf->if_flags |= GLIBTOP_IF_FLAGS_SIMPLEX;
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if (ifnet.if_flags & IFF_LINK0)
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buf->if_flags |= GLIBTOP_IF_FLAGS_LINK0;
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if (ifnet.if_flags & IFF_LINK1)
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buf->if_flags |= GLIBTOP_IF_FLAGS_LINK1;
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if (ifnet.if_flags & IFF_LINK2)
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buf->if_flags |= GLIBTOP_IF_FLAGS_LINK2;
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#ifdef __FreeBSD__
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if (ifnet.if_flags & IFF_ALTPHYS)
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buf->if_flags |= GLIBTOP_IF_FLAGS_ALTPHYS;
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#endif
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if (ifnet.if_flags & IFF_MULTICAST)
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buf->if_flags |= GLIBTOP_IF_FLAGS_MULTICAST;
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buf->subnet = htonl (ifaddr.in.ia_subnet);
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buf->address = sin->sin_addr.s_addr;
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buf->mtu = ifnet.if_mtu;
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buf->packets_in = ifnet.if_ipackets;
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buf->packets_out = ifnet.if_opackets;
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buf->packets_total = buf->packets_in + buf->packets_out;
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buf->bytes_in = ifnet.if_ibytes;
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buf->bytes_out = ifnet.if_obytes;
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buf->bytes_total = buf->bytes_in + buf->bytes_out;
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buf->errors_in = ifnet.if_ierrors;
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buf->errors_out = ifnet.if_oerrors;
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buf->errors_total = buf->errors_in + buf->errors_out;
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buf->collisions = ifnet.if_collisions;
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buf->flags = _glibtop_sysdeps_netload;
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return;
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}
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#if defined(__FreeBSD__) && (__FreeBSD_version >= 300000)
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ifaddraddr = (u_long)ifaddr.ifa.ifa_link.tqe_next;
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#elif defined(__FreeBSD__) || defined(__bsdi__)
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ifaddraddr = (u_long)ifaddr.ifa.ifa_next;
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#else
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ifaddraddr = (u_long)ifaddr.ifa.ifa_list.tqe_next;
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#endif
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}
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#if defined(__FreeBSD__) && (__FreeBSD_version >= 300000)
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ifnetaddr = (u_long) ifnet.if_link.tqe_next;
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#elif defined(__FreeBSD__) || defined(__bsdi__)
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ifnetaddr = (u_long) ifnet.if_next;
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#else
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ifnetaddr = (u_long) ifnet.if_list.tqe_next;
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#endif
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}
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}
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