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--- net-tools-1.60/ifconfig.c.new 2005-07-20 12:47:29.000000000 +0200
+++ net-tools-1.60/ifconfig.c 2005-07-20 12:54:57.000000000 +0200
@@ -175,6 +175,32 @@
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] [-v] [-s] <interface> [[<AF>] <address>]\n"));
@@ -249,7 +275,7 @@
err = 1;
}
}
- return 0;
+ return err;
}
int main(int argc, char **argv)
@@ -415,6 +441,8 @@
}
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;
}
@@ -425,6 +453,8 @@
}
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;
}
@@ -435,6 +465,8 @@
}
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;
}
@@ -456,6 +488,8 @@
}
if (!strcmp(*spp, "-dynamic")) {
goterr |= clr_flag(ifr.ifr_name, IFF_DYNAMIC);
+ if (test_flag(ifr.ifr_name, IFF_MULTICAST) > 0)
+ fprintf(stderr, _("Warning: Interface %s still in DYNAMIC mode.\n"), ifr.ifr_name);
spp++;
continue;
}
@@ -513,6 +547,8 @@
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;
}
@@ -569,7 +605,7 @@
continue;
}
didnetmask++;
- goterr = set_netmask(ap->fd, &ifr, &sa, dobcast);
+ goterr |= set_netmask(ap->fd, &ifr, &sa, dobcast);
spp++;
continue;
}
@@ -640,6 +676,8 @@
}
if (!strcmp(*spp, "-pointopoint")) {
goterr |= clr_flag(ifr.ifr_name, IFF_POINTOPOINT);
+ if (test_flag(ifr.ifr_name, IFF_MULTICAST) > 0)
+ fprintf(stderr, _("Warning: Interface %s still in POINTOPOINT mode.\n"), ifr.ifr_name);
spp++;
continue;
}
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