nl-list-caches.c

/*
 * nl-list-caches.c     List registered cache types
 *
 *      This library is free software; you can redistribute it and/or
 *      modify it under the terms of the GNU Lesser General Public
 *      License as published by the Free Software Foundation version 2.1
 *      of the License.
 *
 * Copyright (c) 2003-2009 Thomas Graf <tgraf@suug.ch>
 */

#include <netlink-private/netlink.h>
#include <netlink/cli/utils.h>

static void print_usage(void)
{
        fprintf(stderr, "Usage: nl-list-caches\n");
        exit(1);
}

static char *id_attr_list(struct nl_object_ops *ops, char *buf, size_t len)
{
        if (ops->oo_attrs2str != NULL)
                return ops->oo_attrs2str(ops->oo_id_attrs, buf, len);
        else {
                memset(buf, 0, len);
                return buf;
        }
}

static void print(struct nl_cache_ops *ops, void *arg)
{
        char buf[64];

        printf("%s:\n" \
               "    hdrsize: %d bytes\n" \
               "    protocol: %s\n" \
               "    request-update: %s\n" \
               "    msg-parser: %s\n",
               ops->co_name, ops->co_hdrsize,
               nl_nlfamily2str(ops->co_protocol, buf, sizeof(buf)),
               ops->co_request_update ? "yes" : "no",
               ops->co_msg_parser ? "yes" : "no");

        if (ops->co_obj_ops) {
                struct nl_object_ops *obj_ops = ops->co_obj_ops;
                const char *dump_names[NL_DUMP_MAX+1] = {
                        "brief",
                        "detailed",
                        "stats",
                };
                int i;

                printf("    cacheable object:\n" \
                       "        name: %s:\n" \
                       "        size: %zu bytes\n" \
                       "        constructor: %s\n" \
                       "        free-data: %s\n" \
                       "        clone: %s\n" \
                       "        compare: %s\n" \
                       "        id attributes: %s\n" \
                       "        dump: ",
                       obj_ops->oo_name, obj_ops->oo_size,
                       obj_ops->oo_constructor ? "yes" : "no",
                       obj_ops->oo_free_data ? "yes" : "no",
                       obj_ops->oo_clone ? "yes" : "no",
                       obj_ops->oo_compare ? "yes" : "no",
                       id_attr_list(obj_ops, buf, sizeof(buf)));

                for (i = 0; i <= NL_DUMP_MAX; i++)
                        if (obj_ops->oo_dump[i])
                                printf("%s%s",
                                i == 0 ? "" : ", ",
                                dump_names[i]);

                printf("\n");
        }

        if (ops->co_genl) {
                struct genl_ops *genl_ops = ops->co_genl;

                printf("    genl:\n" \
                       "        name: %s\n" \
                       "        user-hdr: %d\n" \
                       "        id: %d\n",
                       genl_ops->o_name, genl_ops->o_hdrsize, genl_ops->o_id);

                if (genl_ops->o_ncmds) {
                        int i;

                        printf("        cmds:\n");

                        for (i = 0; i < genl_ops->o_ncmds; i++) {
                                struct genl_cmd *cmd = &genl_ops->o_cmds[i];

                                printf("            %s:\n"
                                       "                id: %d\n" \
                                       "                maxattr: %d\n" \
                                       "                msg-parser: %s\n" \
                                       "                attr-policy: %s\n",
                                       cmd->c_name, cmd->c_id, cmd->c_maxattr,
                                       cmd->c_msg_parser ? "yes" : "no",
                                       cmd->c_attr_policy ? "yes" : "no");
                        }
                }
        }
}

int main(int argc, char *argv[])
{
        if (argc > 1 && !strcasecmp(argv[1], "-h"))
                print_usage();

        nl_cache_ops_foreach(print, NULL);

        return 0;
}