84 lines
1.9 KiB
C
84 lines
1.9 KiB
C
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/*
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* src/nl-link-set.c Set link attributes
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation version 2.1
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* of the License.
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*
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* Copyright (c) 2003-2006 Thomas Graf <tgraf@suug.ch>
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*/
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#include "utils.h"
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static void print_usage(void)
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{
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printf(
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"Usage: nl-link-set <ifindex> <changes>\n"
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" changes := [dev DEV] [mtu MTU] [txqlen TXQLEN] [weight WEIGHT] [link LINK]\n"
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" [master MASTER] [qdisc QDISC] [addr ADDR] [broadcast BRD]\n"
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" [{ up | down }] [{ arp | noarp }] [{ promisc | nopromisc }]\n"
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" [{ dynamic | nodynamic }] [{ multicast | nomulticast }]\n"
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" [{ trailers | notrailers }] [{ allmulticast | noallmulticast }]\n");
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exit(1);
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}
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#include "f_link.c"
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int main(int argc, char *argv[])
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{
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struct nl_handle *nlh;
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struct nl_cache *link_cache;
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struct rtnl_link *link, *orig;
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int err = 1, ifindex;
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if (nltool_init(argc, argv) < 0)
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return -1;
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if (argc < 2 || !strcmp(argv[1], "-h"))
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print_usage();
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nlh = nltool_alloc_handle();
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if (!nlh)
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return -1;
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link = rtnl_link_alloc();
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if (!link)
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goto errout;
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if (nltool_connect(nlh, NETLINK_ROUTE) < 0)
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goto errout_free;
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link_cache = nltool_alloc_link_cache(nlh);
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if (!link_cache)
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goto errout_close;
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ifindex = strtoul(argv[1], NULL, 0);
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if (!(orig = rtnl_link_get(link_cache, ifindex))) {
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fprintf(stderr, "Interface index %d does not exist\n", ifindex);
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goto errout_cache;
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}
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get_filter(link, argc, argv, 2, link_cache);
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if (rtnl_link_change(nlh, orig, link, 0) < 0) {
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fprintf(stderr, "Unable to change link: %s\n", nl_geterror());
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goto errout_put;
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}
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err = 0;
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errout_put:
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rtnl_link_put(orig);
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errout_cache:
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nl_cache_free(link_cache);
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errout_close:
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nl_close(nlh);
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errout_free:
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rtnl_link_put(link);
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errout:
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nl_handle_destroy(nlh);
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return err;
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}
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