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<h1>lib/genl/mngt.c</h1> </div>
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<div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*</span>
<a name="l00002"></a>00002 <span class="comment"> * lib/genl/mngt.c Generic Netlink Management</span>
<a name="l00003"></a>00003 <span class="comment"> *</span>
<a name="l00004"></a>00004 <span class="comment"> * This library is free software; you can redistribute it and/or</span>
<a name="l00005"></a>00005 <span class="comment"> * modify it under the terms of the GNU Lesser General Public</span>
<a name="l00006"></a>00006 <span class="comment"> * License as published by the Free Software Foundation version 2.1</span>
<a name="l00007"></a>00007 <span class="comment"> * of the License.</span>
<a name="l00008"></a>00008 <span class="comment"> *</span>
<a name="l00009"></a>00009 <span class="comment"> * Copyright (c) 2003-2006 Thomas Graf <tgraf@suug.ch></span>
<a name="l00010"></a>00010 <span class="comment"> */</span>
<a name="l00011"></a>00011 <span class="comment"></span>
<a name="l00012"></a>00012 <span class="comment">/**</span>
<a name="l00013"></a>00013 <span class="comment"> * @ingroup genl</span>
<a name="l00014"></a>00014 <span class="comment"> * @defgroup genl_mngt Management</span>
<a name="l00015"></a>00015 <span class="comment"> *</span>
<a name="l00016"></a>00016 <span class="comment"> * @par 1) Registering a generic netlink module</span>
<a name="l00017"></a>00017 <span class="comment"> * @code</span>
<a name="l00018"></a>00018 <span class="comment"> * #include <netlink/genl/mngt.h></span>
<a name="l00019"></a>00019 <span class="comment"> *</span>
<a name="l00020"></a>00020 <span class="comment"> * // First step is to define all the commands being used in</span>
<a name="l00021"></a>00021 <span class="comment"> * // particular generic netlink family. The ID and name are</span>
<a name="l00022"></a>00022 <span class="comment"> * // mandatory to be filled out. A callback function and</span>
<a name="l00023"></a>00023 <span class="comment"> * // most the attribute policy that comes with it must be</span>
<a name="l00024"></a>00024 <span class="comment"> * // defined for commands expected to be issued towards</span>
<a name="l00025"></a>00025 <span class="comment"> * // userspace.</span>
<a name="l00026"></a>00026 <span class="comment"> * static struct genl_cmd foo_cmds[] = {</span>
<a name="l00027"></a>00027 <span class="comment"> * {</span>
<a name="l00028"></a>00028 <span class="comment"> * .c_id = FOO_CMD_NEW,</span>
<a name="l00029"></a>00029 <span class="comment"> * .c_name = "NEWFOO" ,</span>
<a name="l00030"></a>00030 <span class="comment"> * .c_maxattr = FOO_ATTR_MAX,</span>
<a name="l00031"></a>00031 <span class="comment"> * .c_attr_policy = foo_policy,</span>
<a name="l00032"></a>00032 <span class="comment"> * .c_msg_parser = foo_msg_parser,</span>
<a name="l00033"></a>00033 <span class="comment"> * },</span>
<a name="l00034"></a>00034 <span class="comment"> * {</span>
<a name="l00035"></a>00035 <span class="comment"> * .c_id = FOO_CMD_DEL,</span>
<a name="l00036"></a>00036 <span class="comment"> * .c_name = "DELFOO" ,</span>
<a name="l00037"></a>00037 <span class="comment"> * },</span>
<a name="l00038"></a>00038 <span class="comment"> * };</span>
<a name="l00039"></a>00039 <span class="comment"> *</span>
<a name="l00040"></a>00040 <span class="comment"> * // The list of commands must then be integrated into a</span>
<a name="l00041"></a>00041 <span class="comment"> * // struct genl_ops serving as handle for this particular</span>
<a name="l00042"></a>00042 <span class="comment"> * // family.</span>
<a name="l00043"></a>00043 <span class="comment"> * static struct genl_ops my_genl_ops = {</span>
<a name="l00044"></a>00044 <span class="comment"> * .o_cmds = foo_cmds,</span>
<a name="l00045"></a>00045 <span class="comment"> * .o_ncmds = ARRAY_SIZE(foo_cmds),</span>
<a name="l00046"></a>00046 <span class="comment"> * };</span>
<a name="l00047"></a>00047 <span class="comment"> *</span>
<a name="l00048"></a>00048 <span class="comment"> * // Using the above struct genl_ops an arbitary number of</span>
<a name="l00049"></a>00049 <span class="comment"> * // cache handles can be associated to it.</span>
<a name="l00050"></a>00050 <span class="comment"> * //</span>
<a name="l00051"></a>00051 <span class="comment"> * // The macro GENL_HDRSIZE() must be used to specify the</span>
<a name="l00052"></a>00052 <span class="comment"> * // length of the header to automatically take headers on</span>
<a name="l00053"></a>00053 <span class="comment"> * // generic layers into account.</span>
<a name="l00054"></a>00054 <span class="comment"> * //</span>
<a name="l00055"></a>00055 <span class="comment"> * // The macro GENL_FAMILY() is used to represent the generic</span>
<a name="l00056"></a>00056 <span class="comment"> * // netlink family id.</span>
<a name="l00057"></a>00057 <span class="comment"> * static struct nl_cache_ops genl_foo_ops = {</span>
<a name="l00058"></a>00058 <span class="comment"> * .co_name = "genl/foo",</span>
<a name="l00059"></a>00059 <span class="comment"> * .co_hdrsize = GENL_HDRSIZE(sizeof(struct my_hdr)),</span>
<a name="l00060"></a>00060 <span class="comment"> * .co_msgtypes = GENL_FAMILY(GENL_ID_GENERATE, "foo"),</span>
<a name="l00061"></a>00061 <span class="comment"> * .co_genl = &my_genl_ops,</span>
<a name="l00062"></a>00062 <span class="comment"> * .co_protocol = NETLINK_GENERIC,</span>
<a name="l00063"></a>00063 <span class="comment"> * .co_request_update = foo_request_update,</span>
<a name="l00064"></a>00064 <span class="comment"> * .co_obj_ops = &genl_foo_ops,</span>
<a name="l00065"></a>00065 <span class="comment"> * };</span>
<a name="l00066"></a>00066 <span class="comment"> *</span>
<a name="l00067"></a>00067 <span class="comment"> * // Finally each cache handle for a generic netlink family</span>
<a name="l00068"></a>00068 <span class="comment"> * // must be registered using genl_register().</span>
<a name="l00069"></a>00069 <span class="comment"> * static void __init foo_init(void)</span>
<a name="l00070"></a>00070 <span class="comment"> * {</span>
<a name="l00071"></a>00071 <span class="comment"> * genl_register(&genl_foo_ops);</span>
<a name="l00072"></a>00072 <span class="comment"> * }</span>
<a name="l00073"></a>00073 <span class="comment"> *</span>
<a name="l00074"></a>00074 <span class="comment"> * // ... respectively unregsted again.</span>
<a name="l00075"></a>00075 <span class="comment"> * static void __exit foo_exit(void)</span>
<a name="l00076"></a>00076 <span class="comment"> * {</span>
<a name="l00077"></a>00077 <span class="comment"> * genl_unregister(&genl_foo_ops);</span>
<a name="l00078"></a>00078 <span class="comment"> * }</span>
<a name="l00079"></a>00079 <span class="comment"> * @endcode</span>
<a name="l00080"></a>00080 <span class="comment"> * @{</span>
<a name="l00081"></a>00081 <span class="comment"> */</span>
<a name="l00082"></a>00082
<a name="l00083"></a>00083 <span class="preprocessor">#include <netlink-generic.h></span>
<a name="l00084"></a>00084 <span class="preprocessor">#include <netlink/netlink.h></span>
<a name="l00085"></a>00085 <span class="preprocessor">#include <netlink/genl/genl.h></span>
<a name="l00086"></a>00086 <span class="preprocessor">#include <netlink/genl/mngt.h></span>
<a name="l00087"></a>00087 <span class="preprocessor">#include <netlink/genl/family.h></span>
<a name="l00088"></a>00088 <span class="preprocessor">#include <netlink/genl/ctrl.h></span>
<a name="l00089"></a>00089 <span class="preprocessor">#include <netlink/utils.h></span>
<a name="l00090"></a>00090
<a name="l00091"></a>00091 <span class="keyword">static</span> NL_LIST_HEAD(genl_ops_list);
<a name="l00092"></a>00092
<a name="l00093"></a>00093 <span class="keyword">static</span> <span class="keywordtype">int</span> genl_msg_parser(<span class="keyword">struct</span> <a class="code" href="structnl__cache__ops.html" title="Cache Operations.">nl_cache_ops</a> *ops, <span class="keyword">struct</span> <a class="code" href="structsockaddr__nl.html" title="Netlink socket address.">sockaddr_nl</a> *who,
<a name="l00094"></a>00094 <span class="keyword">struct</span> <a class="code" href="structnlmsghdr.html" title="Netlink message header.">nlmsghdr</a> *nlh, <span class="keyword">struct</span> <a class="code" href="structnl__parser__param.html">nl_parser_param</a> *pp)
<a name="l00095"></a>00095 {
<a name="l00096"></a>00096 <span class="keywordtype">int</span> i, err;
<a name="l00097"></a>00097 <span class="keyword">struct </span>genlmsghdr *ghdr;
<a name="l00098"></a>00098 <span class="keyword">struct </span><a class="code" href="structgenl__cmd.html" title="Generic Netlink Command.">genl_cmd</a> *cmd;
<a name="l00099"></a>00099
<a name="l00100"></a>00100 ghdr = <a class="code" href="group__msg.html#gae44a904bb40c8b5f5ff31539c21cfa5a" title="head of message payload">nlmsg_data</a>(nlh);
<a name="l00101"></a>00101
<a name="l00102"></a>00102 <span class="keywordflow">if</span> (ops->co_genl == NULL)
<a name="l00103"></a>00103 BUG();
<a name="l00104"></a>00104
<a name="l00105"></a>00105 <span class="keywordflow">for</span> (i = 0; i < ops->co_genl->o_ncmds; i++) {
<a name="l00106"></a>00106 cmd = &ops->co_genl->o_cmds[i];
<a name="l00107"></a>00107 <span class="keywordflow">if</span> (cmd-><a class="code" href="structgenl__cmd.html#a44973cc65dbac22f07415820d33bc75e" title="Unique command identifier.">c_id</a> == ghdr->cmd)
<a name="l00108"></a>00108 <span class="keywordflow">goto</span> found;
<a name="l00109"></a>00109 }
<a name="l00110"></a>00110
<a name="l00111"></a>00111 err = nl_errno(ENOENT);
<a name="l00112"></a>00112 <span class="keywordflow">goto</span> errout;
<a name="l00113"></a>00113
<a name="l00114"></a>00114 found:
<a name="l00115"></a>00115 <span class="keywordflow">if</span> (cmd->c_msg_parser == NULL)
<a name="l00116"></a>00116 err = nl_error(EOPNOTSUPP, <span class="stringliteral">"No message parser found."</span>);
<a name="l00117"></a>00117 <span class="keywordflow">else</span> {
<a name="l00118"></a>00118 <span class="keyword">struct </span>nlattr *tb[cmd-><a class="code" href="structgenl__cmd.html#ad651920e9500358f83aac003e6d02c8c" title="Maximum attribute identifier, must be provided if a message parser is available.">c_maxattr</a> + 1];
<a name="l00119"></a>00119 <span class="keyword">struct </span>genl_info info = {
<a name="l00120"></a>00120 .who = who,
<a name="l00121"></a>00121 .nlh = nlh,
<a name="l00122"></a>00122 .genlhdr = ghdr,
<a name="l00123"></a>00123 .userhdr = <a class="code" href="group__genl.html#ga8924deee081eaae1011d5b5ecc497478" title="Get head of message payload.">genlmsg_data</a>(ghdr),
<a name="l00124"></a>00124 .attrs = tb,
<a name="l00125"></a>00125 };
<a name="l00126"></a>00126
<a name="l00127"></a>00127 err = <a class="code" href="group__msg.html#ga2671eefe95c3e44dec8ddab51ae57593" title="parse attributes of a netlink message">nlmsg_parse</a>(nlh, ops->co_hdrsize, tb, cmd-><a class="code" href="structgenl__cmd.html#ad651920e9500358f83aac003e6d02c8c" title="Maximum attribute identifier, must be provided if a message parser is available.">c_maxattr</a>,
<a name="l00128"></a>00128 cmd-><a class="code" href="structgenl__cmd.html#a29e5fae8b773c5d370ff892f1ef30ed9" title="Attribute validation policy (optional)">c_attr_policy</a>);
<a name="l00129"></a>00129 <span class="keywordflow">if</span> (err < 0)
<a name="l00130"></a>00130 <span class="keywordflow">goto</span> errout;
<a name="l00131"></a>00131
<a name="l00132"></a>00132 err = cmd->c_msg_parser(ops, cmd, &info, pp);
<a name="l00133"></a>00133 }
<a name="l00134"></a>00134 errout:
<a name="l00135"></a>00135 <span class="keywordflow">return</span> err;
<a name="l00136"></a>00136
<a name="l00137"></a>00137 }
<a name="l00138"></a>00138
<a name="l00139"></a>00139 <span class="keywordtype">char</span> *genl_op2name(<span class="keywordtype">int</span> family, <span class="keywordtype">int</span> op, <span class="keywordtype">char</span> *buf, <span class="keywordtype">size_t</span> len)
<a name="l00140"></a>00140 {
<a name="l00141"></a>00141 <span class="keyword">struct </span><a class="code" href="structgenl__ops.html" title="Generic Netlink Operations.">genl_ops</a> *ops;
<a name="l00142"></a>00142 <span class="keywordtype">int</span> i;
<a name="l00143"></a>00143
<a name="l00144"></a>00144 nl_list_for_each_entry(ops, &genl_ops_list, o_list) {
<a name="l00145"></a>00145 <span class="keywordflow">if</span> (ops->o_family == family) {
<a name="l00146"></a>00146 <span class="keywordflow">for</span> (i = 0; i < ops->o_ncmds; i++) {
<a name="l00147"></a>00147 <span class="keyword">struct </span><a class="code" href="structgenl__cmd.html" title="Generic Netlink Command.">genl_cmd</a> *cmd;
<a name="l00148"></a>00148 cmd = &ops->o_cmds[i];
<a name="l00149"></a>00149
<a name="l00150"></a>00150 <span class="keywordflow">if</span> (cmd-><a class="code" href="structgenl__cmd.html#a44973cc65dbac22f07415820d33bc75e" title="Unique command identifier.">c_id</a> == op) {
<a name="l00151"></a>00151 strncpy(buf, cmd-><a class="code" href="structgenl__cmd.html#a771cca2656317ee4572a7adf695d9b2c" title="Name/description of command.">c_name</a>, len - 1);
<a name="l00152"></a>00152 <span class="keywordflow">return</span> buf;
<a name="l00153"></a>00153 }
<a name="l00154"></a>00154 }
<a name="l00155"></a>00155 }
<a name="l00156"></a>00156 }
<a name="l00157"></a>00157
<a name="l00158"></a>00158 strncpy(buf, <span class="stringliteral">"unknown"</span>, len - 1);
<a name="l00159"></a>00159 <span class="keywordflow">return</span> NULL;
<a name="l00160"></a>00160 }
<a name="l00161"></a>00161
<a name="l00162"></a>00162 <span class="comment"></span>
<a name="l00163"></a>00163 <span class="comment">/**</span>
<a name="l00164"></a>00164 <span class="comment"> * @name Register/Unregister</span>
<a name="l00165"></a>00165 <span class="comment"> * @{</span>
<a name="l00166"></a>00166 <span class="comment"> */</span>
<a name="l00167"></a>00167 <span class="comment"></span>
<a name="l00168"></a>00168 <span class="comment">/**</span>
<a name="l00169"></a>00169 <span class="comment"> * Register generic netlink operations</span>
<a name="l00170"></a>00170 <span class="comment"> * @arg ops cache operations</span>
<a name="l00171"></a>00171 <span class="comment"> */</span>
<a name="l00172"></a><a class="code" href="group__genl__mngt.html#ga090500dc23450349a7c2861fb3ae5f54">00172</a> <span class="keywordtype">int</span> <a class="code" href="group__genl__mngt.html#ga090500dc23450349a7c2861fb3ae5f54" title="Register generic netlink operations.">genl_register</a>(<span class="keyword">struct</span> <a class="code" href="structnl__cache__ops.html" title="Cache Operations.">nl_cache_ops</a> *ops)
<a name="l00173"></a>00173 {
<a name="l00174"></a>00174 <span class="keywordtype">int</span> err;
<a name="l00175"></a>00175
<a name="l00176"></a>00176 <span class="keywordflow">if</span> (ops->co_protocol != NETLINK_GENERIC) {
<a name="l00177"></a>00177 err = nl_error(EINVAL, <span class="stringliteral">"cache operations not for protocol "</span> \
<a name="l00178"></a>00178 <span class="stringliteral">"NETLINK_GENERIC (protocol=%s)"</span>,
<a name="l00179"></a>00179 ops->co_protocol);
<a name="l00180"></a>00180 <span class="keywordflow">goto</span> errout;
<a name="l00181"></a>00181 }
<a name="l00182"></a>00182
<a name="l00183"></a>00183 <span class="keywordflow">if</span> (ops->co_hdrsize < GENL_HDRSIZE(0)) {
<a name="l00184"></a>00184 err = nl_error(EINVAL, <span class="stringliteral">"co_hdrsize too short, probably "</span> \
<a name="l00185"></a>00185 <span class="stringliteral">"not including genlmsghdr, minsize=%d"</span>,
<a name="l00186"></a>00186 GENL_HDRSIZE(0));
<a name="l00187"></a>00187 <span class="keywordflow">goto</span> errout;
<a name="l00188"></a>00188 }
<a name="l00189"></a>00189
<a name="l00190"></a>00190 <span class="keywordflow">if</span> (ops->co_genl == NULL) {
<a name="l00191"></a>00191 err = nl_error(EINVAL, <span class="stringliteral">"co_genl is NULL, must provide "</span> \
<a name="l00192"></a>00192 <span class="stringliteral">"valid genl operations"</span>);
<a name="l00193"></a>00193 <span class="keywordflow">goto</span> errout;
<a name="l00194"></a>00194 }
<a name="l00195"></a>00195
<a name="l00196"></a>00196 ops->co_genl->o_cache_ops = ops;
<a name="l00197"></a>00197 ops->co_genl->o_name = ops->co_msgtypes[0].<a class="code" href="structnl__msgtype.html#a8a50cfe0a76d4bbe95473f5d2a3a5b96" title="Name of operation for human-readable printing.">mt_name</a>;
<a name="l00198"></a>00198 ops->co_genl->o_family = ops->co_msgtypes[0].<a class="code" href="structnl__msgtype.html#a2b51527c3258ef4231b84d856a7c4164" title="Netlink message type.">mt_id</a>;
<a name="l00199"></a>00199 ops-><a class="code" href="structnl__cache__ops.html#aeea6ef6813bb58a76c3d44454271678f" title="Called whenever a message was received that needs to be parsed.">co_msg_parser</a> = genl_msg_parser;
<a name="l00200"></a>00200
<a name="l00201"></a>00201 <span class="comment">/* FIXME: check for dup */</span>
<a name="l00202"></a>00202
<a name="l00203"></a>00203 nl_list_add_tail(&ops->co_genl->o_list, &genl_ops_list);
<a name="l00204"></a>00204
<a name="l00205"></a>00205 err = <a class="code" href="group__cache__mngt.html#ga390eeb1fa61634cf1c216792c6df63c3" title="Register a set of cache operations.">nl_cache_mngt_register</a>(ops);
<a name="l00206"></a>00206 errout:
<a name="l00207"></a>00207 <span class="keywordflow">return</span> err;
<a name="l00208"></a>00208 }
<a name="l00209"></a>00209 <span class="comment"></span>
<a name="l00210"></a>00210 <span class="comment">/**</span>
<a name="l00211"></a>00211 <span class="comment"> * Unregister generic netlink operations</span>
<a name="l00212"></a>00212 <span class="comment"> * @arg ops cache operations</span>
<a name="l00213"></a>00213 <span class="comment"> */</span>
<a name="l00214"></a><a class="code" href="group__genl__mngt.html#ga3fa959e2873bd588fbef31d0dabbf014">00214</a> <span class="keywordtype">void</span> <a class="code" href="group__genl__mngt.html#ga3fa959e2873bd588fbef31d0dabbf014" title="Unregister generic netlink operations.">genl_unregister</a>(<span class="keyword">struct</span> <a class="code" href="structnl__cache__ops.html" title="Cache Operations.">nl_cache_ops</a> *ops)
<a name="l00215"></a>00215 {
<a name="l00216"></a>00216 <a class="code" href="group__cache__mngt.html#ga09f56b767b3868b7e0cf8559863dde77" title="Unregister a set of cache operations.">nl_cache_mngt_unregister</a>(ops);
<a name="l00217"></a>00217 nl_list_del(&ops->co_genl->o_list);
<a name="l00218"></a>00218 }
<a name="l00219"></a>00219 <span class="comment"></span>
<a name="l00220"></a>00220 <span class="comment">/** @} */</span>
<a name="l00221"></a>00221 <span class="comment"></span>
<a name="l00222"></a>00222 <span class="comment">/**</span>
<a name="l00223"></a>00223 <span class="comment"> * @name Resolving ID/Name</span>
<a name="l00224"></a>00224 <span class="comment"> * @{</span>
<a name="l00225"></a>00225 <span class="comment"> */</span>
<a name="l00226"></a>00226
<a name="l00227"></a>00227 <span class="keyword">static</span> <span class="keywordtype">int</span> __genl_ops_resolve(<span class="keyword">struct</span> nl_cache *ctrl, <span class="keyword">struct</span> <a class="code" href="structgenl__ops.html" title="Generic Netlink Operations.">genl_ops</a> *ops)
<a name="l00228"></a>00228 {
<a name="l00229"></a>00229 <span class="keyword">struct </span>genl_family *family;
<a name="l00230"></a>00230
<a name="l00231"></a>00231 family = <a class="code" href="group__ctrl.html#ga8546fd167091c03774f530bc56e8e544" title="Look up generic netlink family by family name in the provided cache.">genl_ctrl_search_by_name</a>(ctrl, ops->o_name);
<a name="l00232"></a>00232 <span class="keywordflow">if</span> (family != NULL) {
<a name="l00233"></a>00233 ops->o_id = genl_family_get_id(family);
<a name="l00234"></a>00234 genl_family_put(family);
<a name="l00235"></a>00235
<a name="l00236"></a>00236 <span class="keywordflow">return</span> 0;
<a name="l00237"></a>00237 }
<a name="l00238"></a>00238
<a name="l00239"></a>00239 <span class="keywordflow">return</span> nl_error(ENOENT, <span class="stringliteral">"Unable to find generic netlink family \"%s\""</span>,
<a name="l00240"></a>00240 ops->o_name);
<a name="l00241"></a>00241 }
<a name="l00242"></a>00242
<a name="l00243"></a>00243 <span class="keywordtype">int</span> genl_ops_resolve(<span class="keyword">struct</span> nl_handle *handle, <span class="keyword">struct</span> <a class="code" href="structgenl__ops.html" title="Generic Netlink Operations.">genl_ops</a> *ops)
<a name="l00244"></a>00244 {
<a name="l00245"></a>00245 <span class="keyword">struct </span>nl_cache *ctrl;
<a name="l00246"></a>00246 <span class="keywordtype">int</span> err;
<a name="l00247"></a>00247
<a name="l00248"></a>00248 ctrl = genl_ctrl_alloc_cache(handle);
<a name="l00249"></a>00249 <span class="keywordflow">if</span> (ctrl == NULL) {
<a name="l00250"></a>00250 err = nl_get_errno();
<a name="l00251"></a>00251 <span class="keywordflow">goto</span> errout;
<a name="l00252"></a>00252 }
<a name="l00253"></a>00253
<a name="l00254"></a>00254 err = __genl_ops_resolve(ctrl, ops);
<a name="l00255"></a>00255
<a name="l00256"></a>00256 <a class="code" href="group__cache.html#ga530c896db26d72001d011114b1e6cfaa" title="Free a cache.">nl_cache_free</a>(ctrl);
<a name="l00257"></a>00257 errout:
<a name="l00258"></a>00258 <span class="keywordflow">return</span> err;
<a name="l00259"></a>00259 }
<a name="l00260"></a>00260
<a name="l00261"></a>00261 <span class="keywordtype">int</span> genl_mngt_resolve(<span class="keyword">struct</span> nl_handle *handle)
<a name="l00262"></a>00262 {
<a name="l00263"></a>00263 <span class="keyword">struct </span>nl_cache *ctrl;
<a name="l00264"></a>00264 <span class="keyword">struct </span><a class="code" href="structgenl__ops.html" title="Generic Netlink Operations.">genl_ops</a> *ops;
<a name="l00265"></a>00265 <span class="keywordtype">int</span> err = 0;
<a name="l00266"></a>00266
<a name="l00267"></a>00267 ctrl = genl_ctrl_alloc_cache(handle);
<a name="l00268"></a>00268 <span class="keywordflow">if</span> (ctrl == NULL) {
<a name="l00269"></a>00269 err = nl_get_errno();
<a name="l00270"></a>00270 <span class="keywordflow">goto</span> errout;
<a name="l00271"></a>00271 }
<a name="l00272"></a>00272
<a name="l00273"></a>00273 nl_list_for_each_entry(ops, &genl_ops_list, o_list) {
<a name="l00274"></a>00274 err = __genl_ops_resolve(ctrl, ops);
<a name="l00275"></a>00275 }
<a name="l00276"></a>00276
<a name="l00277"></a>00277 <a class="code" href="group__cache.html#ga530c896db26d72001d011114b1e6cfaa" title="Free a cache.">nl_cache_free</a>(ctrl);
<a name="l00278"></a>00278 errout:
<a name="l00279"></a>00279 <span class="keywordflow">return</span> err;
<a name="l00280"></a>00280 }
<a name="l00281"></a>00281 <span class="comment"></span>
<a name="l00282"></a>00282 <span class="comment">/** @} */</span>
<a name="l00283"></a>00283
<a name="l00284"></a>00284 <span class="comment"></span>
<a name="l00285"></a>00285 <span class="comment">/** @} */</span>
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