Blame tipc/node.c

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/*
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 * node.c	TIPC node functionality.
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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:	Richard Alpe <richard.alpe@ericsson.com>
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 */
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <errno.h>
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#include <linux/tipc_netlink.h>
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#include <linux/tipc.h>
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#include <linux/genetlink.h>
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#include <libmnl/libmnl.h>
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#include "cmdl.h"
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#include "msg.h"
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#include "misc.h"
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#include "node.h"
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static int node_list_cb(const struct nlmsghdr *nlh, void *data)
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{
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	struct nlattr *info[TIPC_NLA_MAX + 1] = {};
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	struct nlattr *attrs[TIPC_NLA_NODE_MAX + 1] = {};
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	char str[33] = {};
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	uint32_t addr;
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	mnl_attr_parse(nlh, sizeof(struct genlmsghdr), parse_attrs, info);
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	if (!info[TIPC_NLA_NODE])
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		return MNL_CB_ERROR;
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	mnl_attr_parse_nested(info[TIPC_NLA_NODE], parse_attrs, attrs);
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	if (!attrs[TIPC_NLA_NODE_ADDR])
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		return MNL_CB_ERROR;
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	addr = mnl_attr_get_u32(attrs[TIPC_NLA_NODE_ADDR]);
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	hash2nodestr(addr, str);
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	printf("%-32s %08x ", str, addr);
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	if (attrs[TIPC_NLA_NODE_UP])
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		printf("up\n");
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	else
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		printf("down\n");
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	return MNL_CB_OK;
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}
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static int cmd_node_list(struct nlmsghdr *nlh, const struct cmd *cmd,
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			 struct cmdl *cmdl, void *data)
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{
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	char buf[MNL_SOCKET_BUFFER_SIZE];
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	if (help_flag) {
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		fprintf(stderr, "Usage: %s node list\n", cmdl->argv[0]);
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		return -EINVAL;
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	}
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	if (!(nlh = msg_init(buf, TIPC_NL_NODE_GET))) {
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		fprintf(stderr, "error, message initialisation failed\n");
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		return -1;
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	}
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	printf("Node Identity                    Hash     State\n");
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	return msg_dumpit(nlh, node_list_cb, NULL);
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}
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static int cmd_node_set_addr(struct nlmsghdr *nlh, const struct cmd *cmd,
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			     struct cmdl *cmdl, void *data)
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{
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	char *str;
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	uint32_t addr;
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	struct nlattr *nest;
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	char buf[MNL_SOCKET_BUFFER_SIZE];
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	if (cmdl->argc != cmdl->optind + 1) {
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		fprintf(stderr, "Usage: %s node set address ADDRESS\n",
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			cmdl->argv[0]);
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		return -EINVAL;
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	}
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	str = shift_cmdl(cmdl);
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	addr = str2addr(str);
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	if (!addr)
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		return -1;
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	if (!(nlh = msg_init(buf, TIPC_NL_NET_SET))) {
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		fprintf(stderr, "error, message initialisation failed\n");
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		return -1;
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	}
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	nest = mnl_attr_nest_start(nlh, TIPC_NLA_NET);
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	mnl_attr_put_u32(nlh, TIPC_NLA_NET_ADDR, addr);
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	mnl_attr_nest_end(nlh, nest);
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	return msg_doit(nlh, NULL, NULL);
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}
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static int cmd_node_get_addr(struct nlmsghdr *nlh, const struct cmd *cmd,
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			     struct cmdl *cmdl, void *data)
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{
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	int sk;
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	socklen_t sz = sizeof(struct sockaddr_tipc);
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	struct sockaddr_tipc addr;
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	sk = socket(AF_TIPC, SOCK_RDM, 0);
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	if (sk < 0) {
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		fprintf(stderr, "opening TIPC socket: %s\n", strerror(errno));
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		return -1;
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	}
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	if (getsockname(sk, (struct sockaddr *)&addr, &sz) < 0) {
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		fprintf(stderr, "getting TIPC socket address: %s\n",
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			strerror(errno));
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		close(sk);
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		return -1;
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	}
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	close(sk);
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	printf("%08x\n", addr.addr.id.node);
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	return 0;
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}
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static int cmd_node_set_nodeid(struct nlmsghdr *nlh, const struct cmd *cmd,
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			       struct cmdl *cmdl, void *data)
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{
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	char buf[MNL_SOCKET_BUFFER_SIZE];
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	uint8_t id[16] = {0,};
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	uint64_t *w0 = (uint64_t *) &id[0];
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	uint64_t *w1 = (uint64_t *) &id[8];
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	struct nlattr *nest;
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	char *str;
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	if (cmdl->argc != cmdl->optind + 1) {
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		fprintf(stderr, "Usage: %s node set nodeid NODE_ID\n",
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			cmdl->argv[0]);
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		return -EINVAL;
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	}
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	str = shift_cmdl(cmdl);
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	if (str2nodeid(str, id)) {
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		fprintf(stderr, "Invalid node identity\n");
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		return -EINVAL;
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	}
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	nlh = msg_init(buf, TIPC_NL_NET_SET);
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	if (!nlh) {
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		fprintf(stderr, "error, message initialisation failed\n");
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		return -1;
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	}
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	nest = mnl_attr_nest_start(nlh, TIPC_NLA_NET);
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	mnl_attr_put_u64(nlh, TIPC_NLA_NET_NODEID, *w0);
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	mnl_attr_put_u64(nlh, TIPC_NLA_NET_NODEID_W1, *w1);
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	mnl_attr_nest_end(nlh, nest);
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	return msg_doit(nlh, NULL, NULL);
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}
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static void cmd_node_set_key_help(struct cmdl *cmdl)
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{
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	fprintf(stderr,
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		"Usage: %s node set key KEY [algname ALGNAME] [nodeid NODEID]\n\n"
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		"PROPERTIES\n"
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		" KEY                   - Symmetric KEY & SALT as a normal or hex string\n"
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		"                         that consists of two parts:\n"
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		"                         [KEY: 16, 24 or 32 octets][SALT: 4 octets]\n\n"
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		" algname ALGNAME       - Default: \"gcm(aes)\"\n\n"
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		" nodeid NODEID         - Own or peer node identity to which the key will\n"
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		"                         be attached. If not present, the key is a cluster\n"
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		"                         key!\n\n"
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		"EXAMPLES\n"
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		"  %s node set key this_is_a_key16_salt algname \"gcm(aes)\" nodeid node1\n"
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		"  %s node set key 0x746869735F69735F615F6B657931365F73616C74 nodeid node2\n\n",
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		cmdl->argv[0], cmdl->argv[0], cmdl->argv[0]);
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}
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static int cmd_node_set_key(struct nlmsghdr *nlh, const struct cmd *cmd,
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			    struct cmdl *cmdl, void *data)
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{
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	struct {
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		union {
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			struct tipc_aead_key key;
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			char mem[TIPC_AEAD_KEY_SIZE_MAX];
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		};
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	} input = {};
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	struct opt opts[] = {
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		{ "algname",	OPT_KEYVAL,	NULL },
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		{ "nodeid",	OPT_KEYVAL,	NULL },
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		{ NULL }
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	};
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	struct nlattr *nest;
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	struct opt *opt_algname, *opt_nodeid;
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	char buf[MNL_SOCKET_BUFFER_SIZE];
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	uint8_t id[TIPC_NODEID_LEN] = {0,};
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	int keysize;
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	char *str;
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	if (help_flag) {
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		(cmd->help)(cmdl);
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		return -EINVAL;
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	}
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	if (cmdl->optind >= cmdl->argc) {
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		fprintf(stderr, "error, missing key\n");
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		return -EINVAL;
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	}
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	/* Get user key */
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	str = shift_cmdl(cmdl);
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	if (str2key(str, &input.key)) {
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		fprintf(stderr, "error, invalid key input\n");
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		return -EINVAL;
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	}
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	if (parse_opts(opts, cmdl) < 0)
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		return -EINVAL;
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	/* Get algorithm name, default: "gcm(aes)" */
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	opt_algname = get_opt(opts, "algname");
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	if (!opt_algname)
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		strcpy(input.key.alg_name, "gcm(aes)");
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	else
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		strcpy(input.key.alg_name, opt_algname->val);
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	/* Get node identity */
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	opt_nodeid = get_opt(opts, "nodeid");
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	if (opt_nodeid && str2nodeid(opt_nodeid->val, id)) {
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		fprintf(stderr, "error, invalid node identity\n");
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		return -EINVAL;
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	}
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	/* Init & do the command */
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	nlh = msg_init(buf, TIPC_NL_KEY_SET);
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	if (!nlh) {
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		fprintf(stderr, "error, message initialisation failed\n");
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		return -1;
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	}
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	nest = mnl_attr_nest_start(nlh, TIPC_NLA_NODE);
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	keysize = tipc_aead_key_size(&input.key);
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	mnl_attr_put(nlh, TIPC_NLA_NODE_KEY, keysize, &input.key);
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	if (opt_nodeid)
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		mnl_attr_put(nlh, TIPC_NLA_NODE_ID, TIPC_NODEID_LEN, id);
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	mnl_attr_nest_end(nlh, nest);
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	return msg_doit(nlh, NULL, NULL);
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}
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static int cmd_node_flush_key(struct nlmsghdr *nlh, const struct cmd *cmd,
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			      struct cmdl *cmdl, void *data)
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{
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	char buf[MNL_SOCKET_BUFFER_SIZE];
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	if (help_flag) {
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		(cmd->help)(cmdl);
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		return -EINVAL;
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	}
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	/* Init & do the command */
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	nlh = msg_init(buf, TIPC_NL_KEY_FLUSH);
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	if (!nlh) {
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		fprintf(stderr, "error, message initialisation failed\n");
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		return -1;
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	}
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	return msg_doit(nlh, NULL, NULL);
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}
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static int nodeid_get_cb(const struct nlmsghdr *nlh, void *data)
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{
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	struct nlattr *info[TIPC_NLA_MAX + 1] = {};
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	struct nlattr *attrs[TIPC_NLA_NET_MAX + 1] = {};
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	char str[33] = {0,};
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	uint8_t id[16] = {0,};
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	uint64_t *w0 = (uint64_t *) &id[0];
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	uint64_t *w1 = (uint64_t *) &id[8];
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	mnl_attr_parse(nlh, sizeof(struct genlmsghdr), parse_attrs, info);
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	if (!info[TIPC_NLA_NET])
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		return MNL_CB_ERROR;
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	mnl_attr_parse_nested(info[TIPC_NLA_NET], parse_attrs, attrs);
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	if (!attrs[TIPC_NLA_NET_ID])
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		return MNL_CB_ERROR;
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	*w0 = mnl_attr_get_u64(attrs[TIPC_NLA_NET_NODEID]);
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	*w1 = mnl_attr_get_u64(attrs[TIPC_NLA_NET_NODEID_W1]);
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	nodeid2str(id, str);
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	printf("Node Identity                    Hash\n");
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	printf("%-33s", str);
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	cmd_node_get_addr(NULL, NULL, NULL, NULL);
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	return MNL_CB_OK;
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}
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static int cmd_node_get_nodeid(struct nlmsghdr *nlh, const struct cmd *cmd,
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			       struct cmdl *cmdl, void *data)
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{
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	char buf[MNL_SOCKET_BUFFER_SIZE];
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	if (help_flag) {
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		(cmd->help)(cmdl);
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		return -EINVAL;
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	}
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	nlh = msg_init(buf, TIPC_NL_NET_GET);
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	if (!nlh) {
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		fprintf(stderr, "error, message initialisation failed\n");
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		return -1;
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	}
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	return msg_dumpit(nlh, nodeid_get_cb, NULL);
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}
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static int netid_get_cb(const struct nlmsghdr *nlh, void *data)
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{
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	struct nlattr *info[TIPC_NLA_MAX + 1] = {};
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	struct nlattr *attrs[TIPC_NLA_NET_MAX + 1] = {};
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	mnl_attr_parse(nlh, sizeof(struct genlmsghdr), parse_attrs, info);
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	if (!info[TIPC_NLA_NET])
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		return MNL_CB_ERROR;
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	mnl_attr_parse_nested(info[TIPC_NLA_NET], parse_attrs, attrs);
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	if (!attrs[TIPC_NLA_NET_ID])
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		return MNL_CB_ERROR;
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	printf("%u\n", mnl_attr_get_u32(attrs[TIPC_NLA_NET_ID]));
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	return MNL_CB_OK;
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}
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static int cmd_node_get_netid(struct nlmsghdr *nlh, const struct cmd *cmd,
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			      struct cmdl *cmdl, void *data)
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{
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	char buf[MNL_SOCKET_BUFFER_SIZE];
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	if (help_flag) {
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		(cmd->help)(cmdl);
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		return -EINVAL;
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	}
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	if (!(nlh = msg_init(buf, TIPC_NL_NET_GET))) {
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		fprintf(stderr, "error, message initialisation failed\n");
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		return -1;
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	}
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	return msg_dumpit(nlh, netid_get_cb, NULL);
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}
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static int cmd_node_set_netid(struct nlmsghdr *nlh, const struct cmd *cmd,
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			      struct cmdl *cmdl, void *data)
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{
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	int netid;
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	char buf[MNL_SOCKET_BUFFER_SIZE];
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	struct nlattr *nest;
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	if (help_flag) {
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		(cmd->help)(cmdl);
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		return -EINVAL;
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	}
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	if (!(nlh = msg_init(buf, TIPC_NL_NET_SET))) {
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		fprintf(stderr, "error, message initialisation failed\n");
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		return -1;
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	}
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	if (cmdl->argc != cmdl->optind + 1) {
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		fprintf(stderr, "Usage: %s node set netid NETID\n",
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			cmdl->argv[0]);
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		return -EINVAL;
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	}
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	netid = atoi(shift_cmdl(cmdl));
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	nest = mnl_attr_nest_start(nlh, TIPC_NLA_NET);
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	mnl_attr_put_u32(nlh, TIPC_NLA_NET_ID, netid);
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	mnl_attr_nest_end(nlh, nest);
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	return msg_doit(nlh, NULL, NULL);
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}
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static void cmd_node_flush_help(struct cmdl *cmdl)
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{
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	fprintf(stderr,
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		"Usage: %s node flush PROPERTY\n\n"
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		"PROPERTIES\n"
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		" key                   - Flush all symmetric-keys\n",
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		cmdl->argv[0]);
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}
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static int cmd_node_flush(struct nlmsghdr *nlh, const struct cmd *cmd,
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			  struct cmdl *cmdl, void *data)
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{
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	const struct cmd cmds[] = {
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		{ "key",        cmd_node_flush_key,     NULL },
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		{ NULL }
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	};
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	return run_cmd(nlh, cmd, cmds, cmdl, NULL);
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}
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static void cmd_node_set_help(struct cmdl *cmdl)
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{
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	fprintf(stderr,
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		"Usage: %s node set PROPERTY\n\n"
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		"PROPERTIES\n"
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		" identity NODEID       - Set node identity\n"
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		" clusterid CLUSTERID   - Set local cluster id\n"
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		" key PROPERTY          - Set symmetric-key\n",
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		cmdl->argv[0]);
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}
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static int cmd_node_set(struct nlmsghdr *nlh, const struct cmd *cmd,
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			struct cmdl *cmdl, void *data)
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{
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	const struct cmd cmds[] = {
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		{ "address",    cmd_node_set_addr,      NULL },
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		{ "identity",	cmd_node_set_nodeid,	NULL },
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		{ "netid",	cmd_node_set_netid,	NULL },
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		{ "clusterid",	cmd_node_set_netid,	NULL },
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		{ "key",	cmd_node_set_key,	cmd_node_set_key_help },
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		{ NULL }
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	};
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	return run_cmd(nlh, cmd, cmds, cmdl, NULL);
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}
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static void cmd_node_get_help(struct cmdl *cmdl)
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{
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	fprintf(stderr,
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		"Usage: %s node get PROPERTY\n\n"
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		"PROPERTIES\n"
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		" identity              - Get node identity\n"
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		" clusterid             - Get local clusterid\n",
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		cmdl->argv[0]);
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}
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static int cmd_node_get(struct nlmsghdr *nlh, const struct cmd *cmd,
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			struct cmdl *cmdl, void *data)
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{
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	const struct cmd cmds[] = {
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		{ "address",	cmd_node_get_addr,	NULL },
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		{ "identity",	cmd_node_get_nodeid,	NULL },
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		{ "netid",	cmd_node_get_netid,	NULL },
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		{ "clusterid",	cmd_node_get_netid,	NULL },
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		{ NULL }
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	};
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	return run_cmd(nlh, cmd, cmds, cmdl, NULL);
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}
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void cmd_node_help(struct cmdl *cmdl)
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{
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	fprintf(stderr,
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		"Usage: %s node COMMAND [ARGS] ...\n\n"
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		"COMMANDS\n"
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		" list                  - List remote nodes\n"
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		" get                   - Get local node parameters\n"
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		" set                   - Set local node parameters\n"
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		" flush                 - Flush local node parameters\n",
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		cmdl->argv[0]);
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}
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int cmd_node(struct nlmsghdr *nlh, const struct cmd *cmd, struct cmdl *cmdl,
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	     void *data)
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{
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	const struct cmd cmds[] = {
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		{ "list",	cmd_node_list,	NULL },
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		{ "get",	cmd_node_get,	cmd_node_get_help },
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		{ "set",	cmd_node_set,	cmd_node_set_help },
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		{ "flush",	cmd_node_flush, cmd_node_flush_help},
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		{ NULL }
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	};
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	return run_cmd(nlh, cmd, cmds, cmdl, NULL);
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}