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 void cmd_peer_rm_help(struct cmdl *cmdl)
  63 {
  64         fprintf(stderr, "Usage: %s peer remove address ADDRESS\n",
  65                 cmdl->argv[0]);
  66 }
  67
  68 static int cmd_peer_rm(struct nlmsghdr *nlh, const struct cmd *cmd,
  69                         struct cmdl *cmdl, void *data)
  70 {
  71         const struct cmd cmds[] = {
  72                 { "address",    cmd_peer_rm_addr,       cmd_peer_rm_help },
  73                 { NULL }
  74         };
  75
  76         return run_cmd(nlh, cmd, cmds, cmdl, NULL);
  77 }
  78
  79 void cmd_peer_help(struct cmdl *cmdl)
  80 {
  81         fprintf(stderr,
  82                 "Usage: %s peer COMMAND [ARGS] ...\n\n"
  83                 "COMMANDS\n"
  84                 " remove                - Remove an offline peer node\n",
  85                 cmdl->argv[0]);
  86 }
  87
  88 int cmd_peer(struct nlmsghdr *nlh, const struct cmd *cmd, struct cmdl *cmdl,
  89              void *data)
  90 {
  91         const struct cmd cmds[] = {
  92                 { "remove",     cmd_peer_rm,    cmd_peer_rm_help },
  93                 { NULL }
  94         };
  95
  96         return run_cmd(nlh, cmd, cmds, cmdl, NULL);
  97 }