Richard Alpe | f043759 | 2015-05-07 15:07:36 +0200 | [diff] [blame] | 1 | /* |
| 2 | * node.c TIPC node functionality. |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or |
| 5 | * modify it under the terms of the GNU General Public License |
| 6 | * as published by the Free Software Foundation; either version |
| 7 | * 2 of the License, or (at your option) any later version. |
| 8 | * |
| 9 | * Authors: Richard Alpe <richard.alpe@ericsson.com> |
| 10 | */ |
| 11 | |
| 12 | #include <stdio.h> |
| 13 | #include <stdlib.h> |
| 14 | #include <string.h> |
| 15 | #include <errno.h> |
| 16 | |
| 17 | #include <linux/tipc_netlink.h> |
| 18 | #include <linux/tipc.h> |
| 19 | #include <linux/genetlink.h> |
| 20 | #include <libmnl/libmnl.h> |
| 21 | |
| 22 | #include "cmdl.h" |
| 23 | #include "msg.h" |
| 24 | #include "misc.h" |
| 25 | #include "node.h" |
| 26 | |
| 27 | static int node_list_cb(const struct nlmsghdr *nlh, void *data) |
| 28 | { |
| 29 | uint32_t addr; |
| 30 | struct genlmsghdr *genl = mnl_nlmsg_get_payload(nlh); |
| 31 | struct nlattr *info[TIPC_NLA_MAX + 1] = {}; |
| 32 | struct nlattr *attrs[TIPC_NLA_NODE_MAX + 1] = {}; |
| 33 | |
| 34 | mnl_attr_parse(nlh, sizeof(*genl), parse_attrs, info); |
| 35 | if (!info[TIPC_NLA_NODE]) |
| 36 | return MNL_CB_ERROR; |
| 37 | |
| 38 | mnl_attr_parse_nested(info[TIPC_NLA_NODE], parse_attrs, attrs); |
| 39 | if (!attrs[TIPC_NLA_NODE_ADDR]) |
| 40 | return MNL_CB_ERROR; |
| 41 | |
| 42 | addr = mnl_attr_get_u32(attrs[TIPC_NLA_NODE_ADDR]); |
| 43 | printf("<%u.%u.%u>: ", |
| 44 | tipc_zone(addr), |
| 45 | tipc_cluster(addr), |
| 46 | tipc_node(addr)); |
| 47 | |
| 48 | if (attrs[TIPC_NLA_NODE_UP]) |
| 49 | printf("up\n"); |
| 50 | else |
| 51 | printf("down\n"); |
| 52 | |
| 53 | return MNL_CB_OK; |
| 54 | } |
| 55 | |
| 56 | static int cmd_node_list(struct nlmsghdr *nlh, const struct cmd *cmd, |
| 57 | struct cmdl *cmdl, void *data) |
| 58 | { |
| 59 | char buf[MNL_SOCKET_BUFFER_SIZE]; |
| 60 | |
| 61 | if (help_flag) { |
| 62 | fprintf(stderr, "Usage: %s node list\n", cmdl->argv[0]); |
| 63 | return -EINVAL; |
| 64 | } |
| 65 | |
| 66 | if (!(nlh = msg_init(buf, TIPC_NL_NODE_GET))) { |
| 67 | fprintf(stderr, "error, message initialisation failed\n"); |
| 68 | return -1; |
| 69 | } |
| 70 | |
| 71 | return msg_dumpit(nlh, node_list_cb, NULL); |
| 72 | } |
| 73 | |
| 74 | static int cmd_node_set_addr(struct nlmsghdr *nlh, const struct cmd *cmd, |
| 75 | struct cmdl *cmdl, void *data) |
| 76 | { |
| 77 | char *str; |
| 78 | uint32_t addr; |
| 79 | struct nlattr *nest; |
| 80 | char buf[MNL_SOCKET_BUFFER_SIZE]; |
| 81 | |
| 82 | if (cmdl->argc != cmdl->optind + 1) { |
| 83 | fprintf(stderr, "Usage: %s node set address ADDRESS\n", |
| 84 | cmdl->argv[0]); |
| 85 | return -EINVAL; |
| 86 | } |
| 87 | |
| 88 | str = shift_cmdl(cmdl); |
| 89 | addr = str2addr(str); |
| 90 | if (!addr) |
| 91 | return -1; |
| 92 | |
| 93 | if (!(nlh = msg_init(buf, TIPC_NL_NET_SET))) { |
| 94 | fprintf(stderr, "error, message initialisation failed\n"); |
| 95 | return -1; |
| 96 | } |
| 97 | |
| 98 | nest = mnl_attr_nest_start(nlh, TIPC_NLA_NET); |
| 99 | mnl_attr_put_u32(nlh, TIPC_NLA_NET_ADDR, addr); |
| 100 | mnl_attr_nest_end(nlh, nest); |
| 101 | |
| 102 | return msg_doit(nlh, NULL, NULL); |
| 103 | } |
| 104 | |
| 105 | static int cmd_node_get_addr(struct nlmsghdr *nlh, const struct cmd *cmd, |
| 106 | struct cmdl *cmdl, void *data) |
| 107 | { |
| 108 | int sk; |
| 109 | socklen_t sz = sizeof(struct sockaddr_tipc); |
| 110 | struct sockaddr_tipc addr; |
| 111 | |
| 112 | if (!(sk = socket(AF_TIPC, SOCK_RDM, 0))) { |
| 113 | fprintf(stderr, "opening TIPC socket: %s\n", strerror(errno)); |
| 114 | return -1; |
| 115 | } |
| 116 | |
| 117 | if (getsockname(sk, (struct sockaddr *)&addr, &sz) < 0) { |
| 118 | fprintf(stderr, "getting TIPC socket address: %s\n", |
| 119 | strerror(errno)); |
| 120 | close(sk); |
| 121 | return -1; |
| 122 | } |
| 123 | close(sk); |
| 124 | |
| 125 | printf("<%u.%u.%u>\n", |
| 126 | tipc_zone(addr.addr.id.node), |
| 127 | tipc_cluster(addr.addr.id.node), |
| 128 | tipc_node(addr.addr.id.node)); |
| 129 | |
| 130 | return 0; |
| 131 | } |
| 132 | |
| 133 | static int netid_get_cb(const struct nlmsghdr *nlh, void *data) |
| 134 | { |
| 135 | struct genlmsghdr *genl = mnl_nlmsg_get_payload(nlh); |
| 136 | struct nlattr *info[TIPC_NLA_MAX + 1] = {}; |
| 137 | struct nlattr *attrs[TIPC_NLA_NET_MAX + 1] = {}; |
| 138 | |
| 139 | mnl_attr_parse(nlh, sizeof(*genl), parse_attrs, info); |
| 140 | if (!info[TIPC_NLA_NET]) |
| 141 | return MNL_CB_ERROR; |
| 142 | |
| 143 | mnl_attr_parse_nested(info[TIPC_NLA_NET], parse_attrs, attrs); |
| 144 | if (!attrs[TIPC_NLA_NET_ID]) |
| 145 | return MNL_CB_ERROR; |
| 146 | |
| 147 | printf("%u\n", mnl_attr_get_u32(attrs[TIPC_NLA_NET_ID])); |
| 148 | |
| 149 | return MNL_CB_OK; |
| 150 | } |
| 151 | |
| 152 | static int cmd_node_get_netid(struct nlmsghdr *nlh, const struct cmd *cmd, |
| 153 | struct cmdl *cmdl, void *data) |
| 154 | { |
| 155 | char buf[MNL_SOCKET_BUFFER_SIZE]; |
| 156 | |
| 157 | if (help_flag) { |
| 158 | (cmd->help)(cmdl); |
| 159 | return -EINVAL; |
| 160 | } |
| 161 | |
| 162 | if (!(nlh = msg_init(buf, TIPC_NL_NET_GET))) { |
| 163 | fprintf(stderr, "error, message initialisation failed\n"); |
| 164 | return -1; |
| 165 | } |
| 166 | |
| 167 | return msg_dumpit(nlh, netid_get_cb, NULL); |
| 168 | } |
| 169 | |
| 170 | static int cmd_node_set_netid(struct nlmsghdr *nlh, const struct cmd *cmd, |
| 171 | struct cmdl *cmdl, void *data) |
| 172 | { |
| 173 | int netid; |
| 174 | char buf[MNL_SOCKET_BUFFER_SIZE]; |
| 175 | struct nlattr *nest; |
| 176 | |
| 177 | if (help_flag) { |
| 178 | (cmd->help)(cmdl); |
| 179 | return -EINVAL; |
| 180 | } |
| 181 | |
| 182 | if (!(nlh = msg_init(buf, TIPC_NL_NET_SET))) { |
| 183 | fprintf(stderr, "error, message initialisation failed\n"); |
| 184 | return -1; |
| 185 | } |
| 186 | |
| 187 | if (cmdl->argc != cmdl->optind + 1) { |
| 188 | fprintf(stderr, "Usage: %s node set netid NETID\n", |
| 189 | cmdl->argv[0]); |
| 190 | return -EINVAL; |
| 191 | } |
| 192 | netid = atoi(shift_cmdl(cmdl)); |
| 193 | |
| 194 | nest = mnl_attr_nest_start(nlh, TIPC_NLA_NET); |
| 195 | mnl_attr_put_u32(nlh, TIPC_NLA_NET_ID, netid); |
| 196 | mnl_attr_nest_end(nlh, nest); |
| 197 | |
| 198 | return msg_doit(nlh, NULL, NULL); |
| 199 | } |
| 200 | |
| 201 | static void cmd_node_set_help(struct cmdl *cmdl) |
| 202 | { |
| 203 | fprintf(stderr, |
| 204 | "Usage: %s node set PROPERTY\n\n" |
| 205 | "PROPERTIES\n" |
| 206 | " address ADDRESS - Set local address\n" |
| 207 | " netid NETID - Set local netid\n", |
| 208 | cmdl->argv[0]); |
| 209 | } |
| 210 | |
| 211 | static int cmd_node_set(struct nlmsghdr *nlh, const struct cmd *cmd, |
| 212 | struct cmdl *cmdl, void *data) |
| 213 | { |
| 214 | const struct cmd cmds[] = { |
| 215 | { "address", cmd_node_set_addr, NULL }, |
| 216 | { "netid", cmd_node_set_netid, NULL }, |
| 217 | { NULL } |
| 218 | }; |
| 219 | |
| 220 | return run_cmd(nlh, cmd, cmds, cmdl, NULL); |
| 221 | } |
| 222 | |
| 223 | static void cmd_node_get_help(struct cmdl *cmdl) |
| 224 | { |
| 225 | fprintf(stderr, |
| 226 | "Usage: %s node get PROPERTY\n\n" |
| 227 | "PROPERTIES\n" |
| 228 | " address - Get local address\n" |
| 229 | " netid - Get local netid\n", |
| 230 | cmdl->argv[0]); |
| 231 | } |
| 232 | |
| 233 | static int cmd_node_get(struct nlmsghdr *nlh, const struct cmd *cmd, |
| 234 | struct cmdl *cmdl, void *data) |
| 235 | { |
| 236 | const struct cmd cmds[] = { |
| 237 | { "address", cmd_node_get_addr, NULL }, |
| 238 | { "netid", cmd_node_get_netid, NULL }, |
| 239 | { NULL } |
| 240 | }; |
| 241 | |
| 242 | return run_cmd(nlh, cmd, cmds, cmdl, NULL); |
| 243 | } |
| 244 | |
| 245 | void cmd_node_help(struct cmdl *cmdl) |
| 246 | { |
| 247 | fprintf(stderr, |
| 248 | "Usage: %s media COMMAND [ARGS] ...\n\n" |
| 249 | "COMMANDS\n" |
| 250 | " list - List remote nodes\n" |
| 251 | " get - Get local node parameters\n" |
| 252 | " set - Set local node parameters\n", |
| 253 | cmdl->argv[0]); |
| 254 | } |
| 255 | |
| 256 | int cmd_node(struct nlmsghdr *nlh, const struct cmd *cmd, struct cmdl *cmdl, |
| 257 | void *data) |
| 258 | { |
| 259 | const struct cmd cmds[] = { |
| 260 | { "list", cmd_node_list, NULL }, |
| 261 | { "get", cmd_node_get, cmd_node_get_help }, |
| 262 | { "set", cmd_node_set, cmd_node_set_help }, |
| 263 | { NULL } |
| 264 | }; |
| 265 | |
| 266 | return run_cmd(nlh, cmd, cmds, cmdl, NULL); |
| 267 | } |