tipc/peer.c

   1 /*
   2  * peer.c       TIPC peer 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 "peer.h"
  26
  27 static int cmd_peer_rm_addr(struct nlmsghdr *nlh, const struct cmd *cmd,
  28                             struct cmdl *cmdl, void *data)
  29 {
  30         char *str;
  31         uint32_t addr;
  32         struct nlattr *nest;
  33         char buf[MNL_SOCKET_BUFFER_SIZE];
  34
  35         if ((cmdl->argc != cmdl->optind + 1) || help_flag) {
  36                 fprintf(stderr, "Usage: %s peer remove address ADDRESS\n",
  37                         cmdl->argv[0]);
  38                 return -EINVAL;
  39         }
  40
  41         str = shift_cmdl(cmdl);
  42
  43         /* First try legacy Z.C.N format, then integer format */
  44         addr = str2addr(str);
  45         if (!addr)
  46                 addr = atoi(str);
  47         if (!addr)
  48                 return -1;
  49
  50         if (!(nlh = msg_init(buf, TIPC_NL_PEER_REMOVE))) {
  51                 fprintf(stderr, "error, message initialisation failed\n");
  52                 return -1;
  53         }
  54
  55         nest = mnl_attr_nest_start(nlh, TIPC_NLA_NET);
  56         mnl_attr_put_u32(nlh, TIPC_NLA_NET_ADDR, addr);
  57         mnl_attr_nest_end(nlh, nest);
  58
  59         return msg_doit(nlh, NULL, NULL);
  60 }
  61
  62 static int cmd_peer_rm_nodeid(struct nlmsghdr *nlh, const struct cmd *cmd,
  63                               struct cmdl *cmdl, void *data)
  64 {
  65         char buf[MNL_SOCKET_BUFFER_SIZE];
  66         __u8 id[16] = {0,};
  67         __u64 *w0 = (__u64 *)&id[0];
  68         __u64 *w1 = (__u64 *)&id[8];
  69         struct nlattr *nest;
  70         char *str;
  71
  72         if (cmdl->argc != cmdl->optind + 1) {
  73                 fprintf(stderr, "Usage: %s peer remove identity NODEID\n",
  74                         cmdl->argv[0]);
  75                 return -EINVAL;
  76         }
  77
  78         str = shift_cmdl(cmdl);
  79         if (str2nodeid(str, id)) {
  80                 fprintf(stderr, "Invalid node identity\n");
  81                 return -EINVAL;
  82         }
  83
  84         nlh = msg_init(buf, TIPC_NL_PEER_REMOVE);
  85         if (!nlh) {
  86                 fprintf(stderr, "error, message initialisation failed\n");
  87                 return -1;
  88         }
  89
  90         nest = mnl_attr_nest_start(nlh, TIPC_NLA_NET);
  91         mnl_attr_put_u64(nlh, TIPC_NLA_NET_NODEID, *w0);
  92         mnl_attr_put_u64(nlh, TIPC_NLA_NET_NODEID_W1, *w1);
  93         mnl_attr_nest_end(nlh, nest);
  94
  95         return msg_doit(nlh, NULL, NULL);
  96 }
  97
  98 static void cmd_peer_rm_help(struct cmdl *cmdl)
  99 {
 100         fprintf(stderr, "Usage: %s peer remove PROPERTY\n\n"
 101                 "PROPERTIES\n"
 102                 " identity NODEID         - Remove peer node identity\n",
 103                 cmdl->argv[0]);
 104 }
 105
 106 static void cmd_peer_rm_addr_help(struct cmdl *cmdl)
 107 {
 108         fprintf(stderr, "Usage: %s peer remove address ADDRESS\n",
 109                 cmdl->argv[0]);
 110 }
 111
 112 static void cmd_peer_rm_nodeid_help(struct cmdl *cmdl)
 113 {
 114         fprintf(stderr, "Usage: %s peer remove identity NODEID\n",
 115                 cmdl->argv[0]);
 116 }
 117
 118 static int cmd_peer_rm(struct nlmsghdr *nlh, const struct cmd *cmd,
 119                         struct cmdl *cmdl, void *data)
 120 {
 121         const struct cmd cmds[] = {
 122                 { "address",  cmd_peer_rm_addr,   cmd_peer_rm_addr_help },
 123                 { "identity", cmd_peer_rm_nodeid, cmd_peer_rm_nodeid_help },
 124                 { NULL }
 125         };
 126
 127         return run_cmd(nlh, cmd, cmds, cmdl, NULL);
 128 }
 129
 130 void cmd_peer_help(struct cmdl *cmdl)
 131 {
 132         fprintf(stderr,
 133                 "Usage: %s peer COMMAND [ARGS] ...\n\n"
 134                 "COMMANDS\n"
 135                 " remove                - Remove an offline peer node\n",
 136                 cmdl->argv[0]);
 137 }
 138
 139 int cmd_peer(struct nlmsghdr *nlh, const struct cmd *cmd, struct cmdl *cmdl,
 140              void *data)
 141 {
 142         const struct cmd cmds[] = {
 143                 { "remove",     cmd_peer_rm,    cmd_peer_rm_help },
 144                 { NULL }
 145         };
 146
 147         return run_cmd(nlh, cmd, cmds, cmdl, NULL);
 148 }