LXR iproute2/tipc/socket.c

   1/*
   2 * socket.c     TIPC socket 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 <errno.h>
  14
  15#include <linux/tipc.h>
  16#include <linux/tipc_netlink.h>
  17#include <linux/genetlink.h>
  18#include <libmnl/libmnl.h>
  19
  20#include "cmdl.h"
  21#include "msg.h"
  22#include "socket.h"
  23
  24#define PORTID_STR_LEN 45 /* Four u32 and five delimiter chars */
  25
  26static int publ_list_cb(const struct nlmsghdr *nlh, void *data)
  27{
  28        struct genlmsghdr *genl = mnl_nlmsg_get_payload(nlh);
  29        struct nlattr *info[TIPC_NLA_MAX + 1] = {};
  30        struct nlattr *attrs[TIPC_NLA_SOCK_MAX + 1] = {};
  31
  32        mnl_attr_parse(nlh, sizeof(*genl), parse_attrs, info);
  33        if (!info[TIPC_NLA_PUBL])
  34                return MNL_CB_ERROR;
  35
  36        mnl_attr_parse_nested(info[TIPC_NLA_PUBL], parse_attrs, attrs);
  37
  38        printf("  bound to {%u,%u,%u}\n",
  39               mnl_attr_get_u32(attrs[TIPC_NLA_PUBL_TYPE]),
  40               mnl_attr_get_u32(attrs[TIPC_NLA_PUBL_LOWER]),
  41               mnl_attr_get_u32(attrs[TIPC_NLA_PUBL_UPPER]));
  42
  43        return MNL_CB_OK;
  44}
  45
  46static int publ_list(uint32_t sock)
  47{
  48        struct nlmsghdr *nlh;
  49        char buf[MNL_SOCKET_BUFFER_SIZE];
  50        struct nlattr *nest;
  51
  52        if (!(nlh = msg_init(buf, TIPC_NL_PUBL_GET))) {
  53                fprintf(stderr, "error, message initialisation failed\n");
  54                return -1;
  55        }
  56
  57        nest = mnl_attr_nest_start(nlh, TIPC_NLA_SOCK);
  58        mnl_attr_put_u32(nlh, TIPC_NLA_SOCK_REF, sock);
  59        mnl_attr_nest_end(nlh, nest);
  60
  61        return msg_dumpit(nlh, publ_list_cb, NULL);
  62}
  63
  64static int sock_list_cb(const struct nlmsghdr *nlh, void *data)
  65{
  66        struct genlmsghdr *genl = mnl_nlmsg_get_payload(nlh);
  67        struct nlattr *info[TIPC_NLA_MAX + 1] = {};
  68        struct nlattr *attrs[TIPC_NLA_SOCK_MAX + 1] = {};
  69
  70        mnl_attr_parse(nlh, sizeof(*genl), parse_attrs, info);
  71        if (!info[TIPC_NLA_SOCK])
  72                return MNL_CB_ERROR;
  73
  74        mnl_attr_parse_nested(info[TIPC_NLA_SOCK], parse_attrs, attrs);
  75        if (!attrs[TIPC_NLA_SOCK_REF])
  76                return MNL_CB_ERROR;
  77
  78        printf("socket %u\n", mnl_attr_get_u32(attrs[TIPC_NLA_SOCK_REF]));
  79
  80        if (attrs[TIPC_NLA_SOCK_CON]) {
  81                uint32_t node;
  82                struct nlattr *con[TIPC_NLA_CON_MAX + 1] = {};
  83
  84                mnl_attr_parse_nested(attrs[TIPC_NLA_SOCK_CON], parse_attrs, con);
  85                node = mnl_attr_get_u32(con[TIPC_NLA_CON_NODE]);
  86
  87                printf("  connected to %x:%u", node,
  88                        mnl_attr_get_u32(con[TIPC_NLA_CON_SOCK]));
  89
  90                if (con[TIPC_NLA_CON_FLAG])
  91                        printf(" via {%u,%u}\n",
  92                                mnl_attr_get_u32(con[TIPC_NLA_CON_TYPE]),
  93                                mnl_attr_get_u32(con[TIPC_NLA_CON_INST]));
  94                else
  95                        printf("\n");
  96        } else if (attrs[TIPC_NLA_SOCK_HAS_PUBL]) {
  97                publ_list(mnl_attr_get_u32(attrs[TIPC_NLA_SOCK_REF]));
  98        }
  99
 100        return MNL_CB_OK;
 101}
 102
 103static int cmd_socket_list(struct nlmsghdr *nlh, const struct cmd *cmd,
 104                           struct cmdl *cmdl, void *data)
 105{
 106        char buf[MNL_SOCKET_BUFFER_SIZE];
 107
 108        if (help_flag) {
 109                fprintf(stderr, "Usage: %s socket list\n", cmdl->argv[0]);
 110                return -EINVAL;
 111        }
 112
 113        if (!(nlh = msg_init(buf, TIPC_NL_SOCK_GET))) {
 114                fprintf(stderr, "error, message initialisation failed\n");
 115                return -1;
 116        }
 117
 118        return msg_dumpit(nlh, sock_list_cb, NULL);
 119}
 120
 121void cmd_socket_help(struct cmdl *cmdl)
 122{
 123        fprintf(stderr,
 124                "Usage: %s socket COMMAND\n\n"
 125                "Commands:\n"
 126                " list                  - List sockets (ports)\n",
 127                cmdl->argv[0]);
 128}
 129
 130int cmd_socket(struct nlmsghdr *nlh, const struct cmd *cmd, struct cmdl *cmdl,
 131                  void *data)
 132{
 133        const struct cmd cmds[] = {
 134                { "list",       cmd_socket_list,        NULL },
 135                { NULL }
 136        };
 137
 138        return run_cmd(nlh, cmd, cmds, cmdl, NULL);
 139}
 140