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c58213f69c
To benefit other users (e.g. link_veth.c) of iplink_parse() from additional attribute checks and setups made in iplink_modify(). This catches most of weired cobination of parameters to peer device configuration. Drop @name, @dev, @link, @group and @index from iplink_parse() parameters list: they are not needed outside. While there change return -1 to exit(-1) for group parsing errors: we want to stop further command processing unless -force option is given to get error line easily. Signed-off-by: Serhey Popovych <serhe.popovych@gmail.com>
87 lines
1.8 KiB
C
87 lines
1.8 KiB
C
/*
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* link_veth.c veth driver module
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*
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* Authors: Pavel Emelianov <xemul@openvz.org>
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*
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*/
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#include <string.h>
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#include <net/if.h>
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#include <linux/veth.h>
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#include "utils.h"
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#include "ip_common.h"
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static void print_usage(FILE *f)
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{
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printf("Usage: ip link <options> type veth [peer <options>]\n"
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"To get <options> type 'ip link add help'\n");
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}
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static void usage(void)
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{
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print_usage(stderr);
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}
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static int veth_parse_opt(struct link_util *lu, int argc, char **argv,
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struct nlmsghdr *n)
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{
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char *type = NULL;
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int err;
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struct rtattr *data;
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struct ifinfomsg *ifm, *peer_ifm;
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unsigned int ifi_flags, ifi_change, ifi_index;
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if (strcmp(argv[0], "peer") != 0) {
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usage();
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return -1;
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}
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ifm = NLMSG_DATA(n);
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ifi_flags = ifm->ifi_flags;
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ifi_change = ifm->ifi_change;
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ifi_index = ifm->ifi_index;
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ifm->ifi_flags = 0;
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ifm->ifi_change = 0;
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ifm->ifi_index = 0;
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data = addattr_nest(n, 1024, VETH_INFO_PEER);
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n->nlmsg_len += sizeof(struct ifinfomsg);
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err = iplink_parse(argc - 1, argv + 1, (struct iplink_req *)n, &type);
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if (err < 0)
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return err;
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if (type)
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duparg("type", argv[err]);
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peer_ifm = RTA_DATA(data);
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peer_ifm->ifi_index = ifm->ifi_index;
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peer_ifm->ifi_flags = ifm->ifi_flags;
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peer_ifm->ifi_change = ifm->ifi_change;
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ifm->ifi_flags = ifi_flags;
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ifm->ifi_change = ifi_change;
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ifm->ifi_index = ifi_index;
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addattr_nest_end(n, data);
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return argc - 1 - err;
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}
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static void veth_print_help(struct link_util *lu, int argc, char **argv,
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FILE *f)
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{
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print_usage(f);
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}
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struct link_util veth_link_util = {
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.id = "veth",
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.parse_opt = veth_parse_opt,
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.print_help = veth_print_help,
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};
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