* that either displays or sets the characteristics of
* one or more of the system's networking interfaces.
*
- * Version: $Id: ifconfig.c,v 1.50 2001/04/13 18:25:18 pb Exp $
+ * Version: $Id: ifconfig.c,v 1.51 2001/06/29 03:48:51 ecki Exp $
*
* Author: Fred N. van Kempen, <waltje@uwalt.nl.mugnet.org>
* and others. Copyright 1993 MicroWalt Corporation
safe_strncpy(ifr.ifr_name, ifname, IFNAMSIZ);
if (ioctl(skfd, SIOCGIFFLAGS, &ifr) < 0) {
- fprintf(stderr, _("%s: unknown interface: %s\n"),
+ fprintf(stderr, _("%s: ERROR while getting interface flags: %s\n"),
ifname, strerror(errno));
return (-1);
}
safe_strncpy(ifr.ifr_name, ifname, IFNAMSIZ);
if (ioctl(fd, SIOCGIFFLAGS, &ifr) < 0) {
- fprintf(stderr, _("%s: unknown interface: %s\n"),
+ fprintf(stderr, _("%s: ERROR while getting interface flags: %s\n"),
ifname, strerror(errno));
return -1;
}
return (0);
}
+/** test is a specified flag is set */
+static int test_flag(char *ifname, short flags)
+{
+ struct ifreq ifr;
+ int fd;
+
+ if (strchr(ifname, ':')) {
+ /* This is a v4 alias interface. Downing it via a socket for
+ another AF may have bad consequences. */
+ fd = get_socket_for_af(AF_INET);
+ if (fd < 0) {
+ fprintf(stderr, _("No support for INET on this system.\n"));
+ return -1;
+ }
+ } else
+ fd = skfd;
+
+ safe_strncpy(ifr.ifr_name, ifname, IFNAMSIZ);
+ if (ioctl(fd, SIOCGIFFLAGS, &ifr) < 0) {
+ fprintf(stderr, _("%s: ERROR while testing interface flags: %s\n"),
+ ifname, strerror(errno));
+ return -1;
+ }
+ return (ifr.ifr_flags & flags);
+}
+
static void usage(void)
{
fprintf(stderr, _("Usage:\n ifconfig [-a] [-i] [-v] [-s] <interface> [[<AF>] <address>]\n"));
}
if (!strcmp(*spp, "-promisc")) {
goterr |= clr_flag(ifr.ifr_name, IFF_PROMISC);
+ if (test_flag(ifr.ifr_name, IFF_PROMISC) > 0)
+ fprintf(stderr, _("Warning: Interface %s still in promisc mode... maybe other application is running?\n"), ifr.ifr_name);
spp++;
continue;
}
}
if (!strcmp(*spp, "-multicast")) {
goterr |= clr_flag(ifr.ifr_name, IFF_MULTICAST);
+ if (test_flag(ifr.ifr_name, IFF_MULTICAST) > 0)
+ fprintf(stderr, _("Warning: Interface %s still in MULTICAST mode.\n"), ifr.ifr_name);
spp++;
continue;
}
}
if (!strcmp(*spp, "-allmulti")) {
goterr |= clr_flag(ifr.ifr_name, IFF_ALLMULTI);
+ if (test_flag(ifr.ifr_name, IFF_MULTICAST) > 0)
+ fprintf(stderr, _("Warning: Interface %s still in ALLMULTI mode.\n"), ifr.ifr_name);
spp++;
continue;
}
if (!strcmp(*spp, "-dynamic")) {
goterr |= clr_flag(ifr.ifr_name, IFF_DYNAMIC);
spp++;
+ if (test_flag(ifr.ifr_name, IFF_MULTICAST) > 0)
+ fprintf(stderr, _("Warning: Interface %s still in DYNAMIC mode.\n"), ifr.ifr_name);
continue;
}
#endif
if (!strcmp(*spp, "-broadcast")) {
goterr |= clr_flag(ifr.ifr_name, IFF_BROADCAST);
+ if (test_flag(ifr.ifr_name, IFF_MULTICAST) > 0)
+ fprintf(stderr, _("Warning: Interface %s still in BROADCAST mode.\n"), ifr.ifr_name);
spp++;
continue;
}
continue;
}
didnetmask++;
- goterr = set_netmask(ap->fd, &ifr, &sa);
+ goterr |= set_netmask(ap->fd, &ifr, &sa);
spp++;
continue;
}
if (!strcmp(*spp, "-pointopoint")) {
goterr |= clr_flag(ifr.ifr_name, IFF_POINTOPOINT);
spp++;
+ if (test_flag(ifr.ifr_name, IFF_MULTICAST) > 0)
+ fprintf(stderr, _("Warning: Interface %s still in POINTOPOINT mode.\n"), ifr.ifr_name);
continue;
}
if (!strcmp(*spp, "pointopoint")) {
if (didnetmask)
usage();
- goterr = set_netmask(skfd, &ifr, &sa);
+ goterr |= set_netmask(skfd, &ifr, &sa);
didnetmask++;
break;
}
spp++;
}
+ if (opt_v && goterr)
+ fprintf(stderr, _("WARNING: at least one error occured. (%d)\n"), goterr);
+
return (goterr);
}