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      1 /*
      2  * nl-list-caches.c	List registered cache types
      3  *
      4  *	This library is free software; you can redistribute it and/or
      5  *	modify it under the terms of the GNU Lesser General Public
      6  *	License as published by the Free Software Foundation version 2.1
      7  *	of the License.
      8  *
      9  * Copyright (c) 2003-2009 Thomas Graf <tgraf (at) suug.ch>
     10  */
     11 
     12 #include <netlink-private/netlink.h>
     13 #include <netlink/cli/utils.h>
     14 
     15 static void print_usage(void)
     16 {
     17 	fprintf(stderr, "Usage: nl-list-caches\n");
     18 	exit(1);
     19 }
     20 
     21 static char *id_attr_list(struct nl_object_ops *ops, char *buf, size_t len)
     22 {
     23 	if (ops->oo_attrs2str != NULL)
     24 		return ops->oo_attrs2str(ops->oo_id_attrs, buf, len);
     25 	else {
     26 		memset(buf, 0, len);
     27 		return buf;
     28 	}
     29 }
     30 
     31 static void print(struct nl_cache_ops *ops, void *arg)
     32 {
     33 	char buf[64];
     34 
     35 	printf("%s:\n" \
     36 	       "    hdrsize: %d bytes\n" \
     37 	       "    protocol: %s\n" \
     38 	       "    request-update: %s\n" \
     39 	       "    msg-parser: %s\n",
     40 	       ops->co_name, ops->co_hdrsize,
     41 	       nl_nlfamily2str(ops->co_protocol, buf, sizeof(buf)),
     42 	       ops->co_request_update ? "yes" : "no",
     43 	       ops->co_msg_parser ? "yes" : "no");
     44 
     45 	if (ops->co_obj_ops) {
     46 		struct nl_object_ops *obj_ops = ops->co_obj_ops;
     47 		const char *dump_names[NL_DUMP_MAX+1] = {
     48 			"brief",
     49 			"detailed",
     50 			"stats",
     51 		};
     52 		int i;
     53 
     54 		printf("    cacheable object:\n" \
     55 		       "        name: %s:\n" \
     56 		       "        size: %zu bytes\n" \
     57 		       "        constructor: %s\n" \
     58 		       "        free-data: %s\n" \
     59 		       "        clone: %s\n" \
     60 		       "        compare: %s\n" \
     61 		       "        id attributes: %s\n" \
     62 		       "        dump: ",
     63 		       obj_ops->oo_name, obj_ops->oo_size,
     64 		       obj_ops->oo_constructor ? "yes" : "no",
     65 		       obj_ops->oo_free_data ? "yes" : "no",
     66 		       obj_ops->oo_clone ? "yes" : "no",
     67 		       obj_ops->oo_compare ? "yes" : "no",
     68 		       id_attr_list(obj_ops, buf, sizeof(buf)));
     69 
     70 		for (i = 0; i <= NL_DUMP_MAX; i++)
     71 			if (obj_ops->oo_dump[i])
     72 				printf("%s%s",
     73 				i == 0 ? "" : ", ",
     74 				dump_names[i]);
     75 
     76 		printf("\n");
     77 	}
     78 
     79 	if (ops->co_genl) {
     80 		struct genl_ops *genl_ops = ops->co_genl;
     81 
     82 		printf("    genl:\n" \
     83 		       "        name: %s\n" \
     84 		       "        user-hdr: %d\n" \
     85 		       "        id: %d\n",
     86 		       genl_ops->o_name, genl_ops->o_hdrsize, genl_ops->o_id);
     87 
     88 		if (genl_ops->o_ncmds) {
     89 			int i;
     90 
     91 			printf("        cmds:\n");
     92 
     93 			for (i = 0; i < genl_ops->o_ncmds; i++) {
     94 				struct genl_cmd *cmd = &genl_ops->o_cmds[i];
     95 
     96 				printf("            %s:\n"
     97 				       "                id: %d\n" \
     98 				       "                maxattr: %d\n" \
     99 				       "                msg-parser: %s\n" \
    100 				       "                attr-policy: %s\n",
    101 				       cmd->c_name, cmd->c_id, cmd->c_maxattr,
    102 				       cmd->c_msg_parser ? "yes" : "no",
    103 				       cmd->c_attr_policy ? "yes" : "no");
    104 			}
    105 		}
    106 	}
    107 }
    108 
    109 int main(int argc, char *argv[])
    110 {
    111 	if (argc > 1 && !strcasecmp(argv[1], "-h"))
    112 		print_usage();
    113 
    114 	nl_cache_ops_foreach(print, NULL);
    115 
    116 	return 0;
    117 }
    118