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 <span id="projectnumber">3.2.21</span>
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<a href="#enum-members">Enumerations</a> </div>
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<div class="title">Callbacks/Customization</div> </div>
<div class="ingroups"><a class="el" href="group__core.html">Core Library (libnl)</a></div></div><!--header-->
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<p>Related sections in the development guide:
<a href="#details">More...</a></p>
<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2><a name="enum-members"></a>
Enumerations</h2></td></tr>
<tr class="memitem:ga0c50cb29c507b3d7e8bc7d76c74675f8"><td class="memItemLeft" align="right" valign="top">enum  </td><td class="memItemRight" valign="bottom"><a class="el" href="group__cb.html#ga0c50cb29c507b3d7e8bc7d76c74675f8">nl_cb_action</a> { <br/>
  <a class="el" href="group__cb.html#gga0c50cb29c507b3d7e8bc7d76c74675f8abce22d25ef3e2fed30f22f8bc27fc8f0">NL_OK</a>,
<br/>
  <a class="el" href="group__cb.html#gga0c50cb29c507b3d7e8bc7d76c74675f8af77d78aac004c6d4bee57741d3a295ae">NL_SKIP</a>,
<br/>
  <a class="el" href="group__cb.html#gga0c50cb29c507b3d7e8bc7d76c74675f8aa87c4bfa1b41e2e06286a412dc2bc17b">NL_STOP</a>
<br/>
}</td></tr>
<tr class="memdesc:ga0c50cb29c507b3d7e8bc7d76c74675f8"><td class="mdescLeft"> </td><td class="mdescRight">Callback actions. <a href="group__cb.html#ga0c50cb29c507b3d7e8bc7d76c74675f8">More...</a><br/></td></tr>
<tr class="memitem:gaba3fabad0c62db483941101e1a18d14d"><td class="memItemLeft" align="right" valign="top">enum  </td><td class="memItemRight" valign="bottom"><a class="el" href="group__cb.html#gaba3fabad0c62db483941101e1a18d14d">nl_cb_kind</a> { <br/>
  <a class="el" href="group__cb.html#ggaba3fabad0c62db483941101e1a18d14da07baae9c246d899cffd1ad49d7c001ce">NL_CB_DEFAULT</a>,
<br/>
  <a class="el" href="group__cb.html#ggaba3fabad0c62db483941101e1a18d14dab2756e6194ec2c53efe5d111093b4375">NL_CB_VERBOSE</a>,
<br/>
  <a class="el" href="group__cb.html#ggaba3fabad0c62db483941101e1a18d14dad2ef3f2dbf45519610f72b3747eacd18">NL_CB_DEBUG</a>,
<br/>
  <a class="el" href="group__cb.html#ggaba3fabad0c62db483941101e1a18d14da22448271a402b4c4a55733ef4884c038">NL_CB_CUSTOM</a>,
<br/>
  <b>__NL_CB_KIND_MAX</b>
<br/>
}</td></tr>
<tr class="memdesc:gaba3fabad0c62db483941101e1a18d14d"><td class="mdescLeft"> </td><td class="mdescRight">Callback kinds. <a href="group__cb.html#gaba3fabad0c62db483941101e1a18d14d">More...</a><br/></td></tr>
<tr class="memitem:ga3f60f4515ada826d2bf16395ee722363"><td class="memItemLeft" align="right" valign="top">enum  </td><td class="memItemRight" valign="bottom"><a class="el" href="group__cb.html#ga3f60f4515ada826d2bf16395ee722363">nl_cb_type</a> { <br/>
  <a class="el" href="group__cb.html#gga3f60f4515ada826d2bf16395ee722363a6e1f371d16186a460f25ea9bb1306c47">NL_CB_VALID</a>,
<br/>
  <a class="el" href="group__cb.html#gga3f60f4515ada826d2bf16395ee722363a044400d11ee451b692333a0d95cf3d32">NL_CB_FINISH</a>,
<br/>
  <a class="el" href="group__cb.html#gga3f60f4515ada826d2bf16395ee722363a25c8376dc758b16bcaeb76c329719dae">NL_CB_OVERRUN</a>,
<br/>
  <a class="el" href="group__cb.html#gga3f60f4515ada826d2bf16395ee722363a034ec83d5ba891deb3d3e54f9e15d3a0">NL_CB_SKIPPED</a>,
<br/>
  <a class="el" href="group__cb.html#gga3f60f4515ada826d2bf16395ee722363a8295b387c07bd076ccdee45b555f1134">NL_CB_ACK</a>,
<br/>
  <a class="el" href="group__cb.html#gga3f60f4515ada826d2bf16395ee722363a160d69995bab2c325bd25d7ee2d5292d">NL_CB_MSG_IN</a>,
<br/>
  <a class="el" href="group__cb.html#gga3f60f4515ada826d2bf16395ee722363a0b43ab5eccae67470bb8ed0b09e2f650">NL_CB_MSG_OUT</a>,
<br/>
  <a class="el" href="group__cb.html#gga3f60f4515ada826d2bf16395ee722363af5b5448bf122561db88d510e5d153a8a">NL_CB_INVALID</a>,
<br/>
  <a class="el" href="group__cb.html#gga3f60f4515ada826d2bf16395ee722363ae73e906b997f00e8911b09e0f254364d">NL_CB_SEQ_CHECK</a>,
<br/>
  <a class="el" href="group__cb.html#gga3f60f4515ada826d2bf16395ee722363af2930b7775d1444c359cd11d7ce2cd02">NL_CB_SEND_ACK</a>,
<br/>
  <a class="el" href="group__cb.html#gga3f60f4515ada826d2bf16395ee722363a1424b30f447e2fabc6e0e65d05c596dc">NL_CB_DUMP_INTR</a>,
<br/>
  <b>__NL_CB_TYPE_MAX</b>
<br/>
}</td></tr>
<tr class="memdesc:ga3f60f4515ada826d2bf16395ee722363"><td class="mdescLeft"> </td><td class="mdescRight">Callback types. <a href="group__cb.html#ga3f60f4515ada826d2bf16395ee722363">More...</a><br/></td></tr>
</table><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2><a name="member-group"></a>
Callback Handle Management</h2></td></tr>
<tr class="memitem:gaea2e77b9e3c0c875f44aec236d9a1009"><td class="memItemLeft" align="right" valign="top">struct nl_cb * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__cb.html#gaea2e77b9e3c0c875f44aec236d9a1009">nl_cb_alloc</a> (enum <a class="el" href="group__cb.html#gaba3fabad0c62db483941101e1a18d14d">nl_cb_kind</a> kind)</td></tr>
<tr class="memdesc:gaea2e77b9e3c0c875f44aec236d9a1009"><td class="mdescLeft"> </td><td class="mdescRight">Allocate a new callback handle. <a href="#gaea2e77b9e3c0c875f44aec236d9a1009"></a><br/></td></tr>
<tr class="memitem:gad438f32bb0f83bd1d15f53e9525f1f65"><td class="memItemLeft" align="right" valign="top">struct nl_cb * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__cb.html#gad438f32bb0f83bd1d15f53e9525f1f65">nl_cb_clone</a> (struct nl_cb *orig)</td></tr>
<tr class="memdesc:gad438f32bb0f83bd1d15f53e9525f1f65"><td class="mdescLeft"> </td><td class="mdescRight">Clone an existing callback handle. <a href="#gad438f32bb0f83bd1d15f53e9525f1f65"></a><br/></td></tr>
<tr class="memitem:gaff3ed772b1fa8520d72c6192428dca89"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="gaff3ed772b1fa8520d72c6192428dca89"></a>
struct nl_cb * </td><td class="memItemRight" valign="bottom"><b>nl_cb_get</b> (struct nl_cb *cb)</td></tr>
<tr class="memitem:ga4b655d12f8c8e5516b114dc3075ec2b8"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="ga4b655d12f8c8e5516b114dc3075ec2b8"></a>
void </td><td class="memItemRight" valign="bottom"><b>nl_cb_put</b> (struct nl_cb *cb)</td></tr>
</table><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2><a name="member-group"></a>
Callback Setup</h2></td></tr>
<tr class="memitem:gabe7b2516f28fbb8bb9c5b1ea2dfaf1d3"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="group__cb.html#gabe7b2516f28fbb8bb9c5b1ea2dfaf1d3">nl_cb_set</a> (struct nl_cb *cb, enum <a class="el" href="group__cb.html#ga3f60f4515ada826d2bf16395ee722363">nl_cb_type</a> type, enum <a class="el" href="group__cb.html#gaba3fabad0c62db483941101e1a18d14d">nl_cb_kind</a> kind, <a class="el" href="group__cb.html#ga1bf04ce17ab1b5867017556a6b4ba729">nl_recvmsg_msg_cb_t</a> func, void *arg)</td></tr>
<tr class="memdesc:gabe7b2516f28fbb8bb9c5b1ea2dfaf1d3"><td class="mdescLeft"> </td><td class="mdescRight">Set up a callback. <a href="#gabe7b2516f28fbb8bb9c5b1ea2dfaf1d3"></a><br/></td></tr>
<tr class="memitem:gad6be5a06f81ed1a411560732c7f3f698"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="group__cb.html#gad6be5a06f81ed1a411560732c7f3f698">nl_cb_set_all</a> (struct nl_cb *cb, enum <a class="el" href="group__cb.html#gaba3fabad0c62db483941101e1a18d14d">nl_cb_kind</a> kind, <a class="el" href="group__cb.html#ga1bf04ce17ab1b5867017556a6b4ba729">nl_recvmsg_msg_cb_t</a> func, void *arg)</td></tr>
<tr class="memdesc:gad6be5a06f81ed1a411560732c7f3f698"><td class="mdescLeft"> </td><td class="mdescRight">Set up a all callbacks. <a href="#gad6be5a06f81ed1a411560732c7f3f698"></a><br/></td></tr>
<tr class="memitem:gafeb5477254d93d0a8a8c991f3dbacd77"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="group__cb.html#gafeb5477254d93d0a8a8c991f3dbacd77">nl_cb_err</a> (struct nl_cb *cb, enum <a class="el" href="group__cb.html#gaba3fabad0c62db483941101e1a18d14d">nl_cb_kind</a> kind, <a class="el" href="group__cb.html#ga2eb817b53fffe9103030c692c73b94df">nl_recvmsg_err_cb_t</a> func, void *arg)</td></tr>
<tr class="memdesc:gafeb5477254d93d0a8a8c991f3dbacd77"><td class="mdescLeft"> </td><td class="mdescRight">Set up an error callback. <a href="#gafeb5477254d93d0a8a8c991f3dbacd77"></a><br/></td></tr>
</table><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2><a name="member-group"></a>
Overwriting</h2></td></tr>
<tr class="memitem:gafb4844ad78bcf9c4b2744f63963e838f"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__cb.html#gafb4844ad78bcf9c4b2744f63963e838f">nl_cb_overwrite_recvmsgs</a> (struct nl_cb *cb, int(*func)(struct nl_sock *, struct nl_cb *))</td></tr>
<tr class="memdesc:gafb4844ad78bcf9c4b2744f63963e838f"><td class="mdescLeft"> </td><td class="mdescRight">Overwrite internal calls to <a class="el" href="group__send__recv.html#gabb1917e38174d5b00cb313420327c495" title="Receive a set of messages from a netlink socket.">nl_recvmsgs()</a> <a href="#gafb4844ad78bcf9c4b2744f63963e838f"></a><br/></td></tr>
<tr class="memitem:ga34d7e38a9a82682e80976aaede0613f7"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__cb.html#ga34d7e38a9a82682e80976aaede0613f7">nl_cb_overwrite_recv</a> (struct nl_cb *cb, int(*func)(struct nl_sock *, struct sockaddr_nl *, unsigned char **, struct ucred **))</td></tr>
<tr class="memdesc:ga34d7e38a9a82682e80976aaede0613f7"><td class="mdescLeft"> </td><td class="mdescRight">Overwrite internal calls to <a class="el" href="group__send__recv.html#ga48ab5192dfa62d6b71760d43a4306d13" title="Receive data from netlink socket.">nl_recv()</a> <a href="#ga34d7e38a9a82682e80976aaede0613f7"></a><br/></td></tr>
<tr class="memitem:ga064e6c7bf17c83033322e9d9a45a1be1"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__cb.html#ga064e6c7bf17c83033322e9d9a45a1be1">nl_cb_overwrite_send</a> (struct nl_cb *cb, int(*func)(struct nl_sock *, struct nl_msg *))</td></tr>
<tr class="memdesc:ga064e6c7bf17c83033322e9d9a45a1be1"><td class="mdescLeft"> </td><td class="mdescRight">Overwrite internal calls to <a class="el" href="group__send__recv.html#ga1e0b4569c49504879875008d012d0b82" title="Transmit Netlink message.">nl_send()</a> <a href="#ga064e6c7bf17c83033322e9d9a45a1be1"></a><br/></td></tr>
</table><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2><a name="member-group"></a>
Callback Typedefs</h2></td></tr>
<tr class="memitem:ga1bf04ce17ab1b5867017556a6b4ba729"><td class="memItemLeft" align="right" valign="top">typedef int(* </td><td class="memItemRight" valign="bottom"><a class="el" href="group__cb.html#ga1bf04ce17ab1b5867017556a6b4ba729">nl_recvmsg_msg_cb_t</a> )(struct nl_msg *msg, void *arg)</td></tr>
<tr class="memdesc:ga1bf04ce17ab1b5867017556a6b4ba729"><td class="mdescLeft"> </td><td class="mdescRight"><a class="el" href="group__send__recv.html#gabb1917e38174d5b00cb313420327c495" title="Receive a set of messages from a netlink socket.">nl_recvmsgs()</a> callback for message processing customization <a href="#ga1bf04ce17ab1b5867017556a6b4ba729"></a><br/></td></tr>
<tr class="memitem:ga2eb817b53fffe9103030c692c73b94df"><td class="memItemLeft" align="right" valign="top">typedef int(* </td><td class="memItemRight" valign="bottom"><a class="el" href="group__cb.html#ga2eb817b53fffe9103030c692c73b94df">nl_recvmsg_err_cb_t</a> )(struct sockaddr_nl *nla, struct nlmsgerr *nlerr, void *arg)</td></tr>
<tr class="memdesc:ga2eb817b53fffe9103030c692c73b94df"><td class="mdescLeft"> </td><td class="mdescRight"><a class="el" href="group__send__recv.html#gabb1917e38174d5b00cb313420327c495" title="Receive a set of messages from a netlink socket.">nl_recvmsgs()</a> callback for error message processing customization <a href="#ga2eb817b53fffe9103030c692c73b94df"></a><br/></td></tr>
</table>
<hr/><a name="details" id="details"></a><h2>Detailed Description</h2>
<p>Related sections in the development guide: </p>
<ul>
<li><a href="../core.html#core_cb"><b> Callback Configuration (Netlink Core Library Development Guide)</b></a></li>
</ul>
<h2>Header</h2>
<div class="fragment"><div class="line"><span class="preprocessor"> #include <netlink/handlers.h></span></div>
</div><!-- fragment --> <hr/><h2>Typedef Documentation</h2>
<a class="anchor" id="ga1bf04ce17ab1b5867017556a6b4ba729"></a>
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<td class="memname">typedef int(* nl_recvmsg_msg_cb_t)(struct nl_msg *msg, void *arg)</td>
</tr>
</table>
</div><div class="memdoc">
<p><a class="el" href="group__send__recv.html#gabb1917e38174d5b00cb313420327c495" title="Receive a set of messages from a netlink socket.">nl_recvmsgs()</a> callback for message processing customization </p>
<dl class="params"><dt>Parameters:</dt><dd>
<table class="params">
<tr><td class="paramname">msg</td><td>netlink message being processed </td></tr>
<tr><td class="paramname">arg</td><td>argument passwd on through caller </td></tr>
</table>
</dd>
</dl>
<p>Definition at line <a class="el" href="handlers_8h_source.html#l00041">41</a> of file <a class="el" href="handlers_8h_source.html">handlers.h</a>.</p>
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<a class="anchor" id="ga2eb817b53fffe9103030c692c73b94df"></a>
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<td class="memname">typedef int(* nl_recvmsg_err_cb_t)(struct sockaddr_nl *nla, struct nlmsgerr *nlerr, void *arg)</td>
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</table>
</div><div class="memdoc">
<p><a class="el" href="group__send__recv.html#gabb1917e38174d5b00cb313420327c495" title="Receive a set of messages from a netlink socket.">nl_recvmsgs()</a> callback for error message processing customization </p>
<dl class="params"><dt>Parameters:</dt><dd>
<table class="params">
<tr><td class="paramname">nla</td><td>netlink address of the peer </td></tr>
<tr><td class="paramname">nlerr</td><td>netlink error message being processed </td></tr>
<tr><td class="paramname">arg</td><td>argument passed on through caller </td></tr>
</table>
</dd>
</dl>
<p>Definition at line <a class="el" href="handlers_8h_source.html#l00050">50</a> of file <a class="el" href="handlers_8h_source.html">handlers.h</a>.</p>
</div>
</div>
<hr/><h2>Enumeration Type Documentation</h2>
<a class="anchor" id="ga0c50cb29c507b3d7e8bc7d76c74675f8"></a>
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<td class="memname">enum <a class="el" href="group__cb.html#ga0c50cb29c507b3d7e8bc7d76c74675f8">nl_cb_action</a></td>
</tr>
</table>
</div><div class="memdoc">
<p>Callback actions. </p>
<dl><dt><b>Enumerator: </b></dt><dd><table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"><em><a class="anchor" id="gga0c50cb29c507b3d7e8bc7d76c74675f8abce22d25ef3e2fed30f22f8bc27fc8f0"></a>NL_OK</em> </td><td>
<p>Proceed with wathever would come next. </p>
</td></tr>
<tr><td valign="top"><em><a class="anchor" id="gga0c50cb29c507b3d7e8bc7d76c74675f8af77d78aac004c6d4bee57741d3a295ae"></a>NL_SKIP</em> </td><td>
<p>Skip this message. </p>
</td></tr>
<tr><td valign="top"><em><a class="anchor" id="gga0c50cb29c507b3d7e8bc7d76c74675f8aa87c4bfa1b41e2e06286a412dc2bc17b"></a>NL_STOP</em> </td><td>
<p>Stop parsing altogether and discard remaining messages. </p>
</td></tr>
</table>
</dd>
</dl>
<p>Definition at line <a class="el" href="handlers_8h_source.html#l00059">59</a> of file <a class="el" href="handlers_8h_source.html">handlers.h</a>.</p>
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<td class="memname">enum <a class="el" href="group__cb.html#gaba3fabad0c62db483941101e1a18d14d">nl_cb_kind</a></td>
</tr>
</table>
</div><div class="memdoc">
<p>Callback kinds. </p>
<dl><dt><b>Enumerator: </b></dt><dd><table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"><em><a class="anchor" id="ggaba3fabad0c62db483941101e1a18d14da07baae9c246d899cffd1ad49d7c001ce"></a>NL_CB_DEFAULT</em> </td><td>
<p>Default handlers (quiet) </p>
</td></tr>
<tr><td valign="top"><em><a class="anchor" id="ggaba3fabad0c62db483941101e1a18d14dab2756e6194ec2c53efe5d111093b4375"></a>NL_CB_VERBOSE</em> </td><td>
<p>Verbose default handlers (error messages printed) </p>
</td></tr>
<tr><td valign="top"><em><a class="anchor" id="ggaba3fabad0c62db483941101e1a18d14dad2ef3f2dbf45519610f72b3747eacd18"></a>NL_CB_DEBUG</em> </td><td>
<p>Debug handlers for debugging. </p>
</td></tr>
<tr><td valign="top"><em><a class="anchor" id="ggaba3fabad0c62db483941101e1a18d14da22448271a402b4c4a55733ef4884c038"></a>NL_CB_CUSTOM</em> </td><td>
<p>Customized handler specified by the user. </p>
</td></tr>
</table>
</dd>
</dl>
<p>Definition at line <a class="el" href="handlers_8h_source.html#l00072">72</a> of file <a class="el" href="handlers_8h_source.html">handlers.h</a>.</p>
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<td class="memname">enum <a class="el" href="group__cb.html#ga3f60f4515ada826d2bf16395ee722363">nl_cb_type</a></td>
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<p>Callback types. </p>
<dl><dt><b>Enumerator: </b></dt><dd><table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"><em><a class="anchor" id="gga3f60f4515ada826d2bf16395ee722363a6e1f371d16186a460f25ea9bb1306c47"></a>NL_CB_VALID</em> </td><td>
<p>Message is valid. </p>
</td></tr>
<tr><td valign="top"><em><a class="anchor" id="gga3f60f4515ada826d2bf16395ee722363a044400d11ee451b692333a0d95cf3d32"></a>NL_CB_FINISH</em> </td><td>
<p>Last message in a series of multi part messages received. </p>
</td></tr>
<tr><td valign="top"><em><a class="anchor" id="gga3f60f4515ada826d2bf16395ee722363a25c8376dc758b16bcaeb76c329719dae"></a>NL_CB_OVERRUN</em> </td><td>
<p>Report received that data was lost. </p>
</td></tr>
<tr><td valign="top"><em><a class="anchor" id="gga3f60f4515ada826d2bf16395ee722363a034ec83d5ba891deb3d3e54f9e15d3a0"></a>NL_CB_SKIPPED</em> </td><td>
<p>Message wants to be skipped. </p>
</td></tr>
<tr><td valign="top"><em><a class="anchor" id="gga3f60f4515ada826d2bf16395ee722363a8295b387c07bd076ccdee45b555f1134"></a>NL_CB_ACK</em> </td><td>
<p>Message is an acknowledge. </p>
</td></tr>
<tr><td valign="top"><em><a class="anchor" id="gga3f60f4515ada826d2bf16395ee722363a160d69995bab2c325bd25d7ee2d5292d"></a>NL_CB_MSG_IN</em> </td><td>
<p>Called for every message received. </p>
</td></tr>
<tr><td valign="top"><em><a class="anchor" id="gga3f60f4515ada826d2bf16395ee722363a0b43ab5eccae67470bb8ed0b09e2f650"></a>NL_CB_MSG_OUT</em> </td><td>
<p>Called for every message sent out except for <a class="el" href="group__send__recv.html#gae41c0bfdd8e637d31df0950b3e5395f8" title="Transmit raw data over Netlink socket.">nl_sendto()</a> </p>
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<tr><td valign="top"><em><a class="anchor" id="gga3f60f4515ada826d2bf16395ee722363af5b5448bf122561db88d510e5d153a8a"></a>NL_CB_INVALID</em> </td><td>
<p>Message is malformed and invalid. </p>
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<tr><td valign="top"><em><a class="anchor" id="gga3f60f4515ada826d2bf16395ee722363ae73e906b997f00e8911b09e0f254364d"></a>NL_CB_SEQ_CHECK</em> </td><td>
<p>Called instead of internal sequence number checking. </p>
</td></tr>
<tr><td valign="top"><em><a class="anchor" id="gga3f60f4515ada826d2bf16395ee722363af2930b7775d1444c359cd11d7ce2cd02"></a>NL_CB_SEND_ACK</em> </td><td>
<p>Sending of an acknowledge message has been requested. </p>
</td></tr>
<tr><td valign="top"><em><a class="anchor" id="gga3f60f4515ada826d2bf16395ee722363a1424b30f447e2fabc6e0e65d05c596dc"></a>NL_CB_DUMP_INTR</em> </td><td>
<p>Flag NLM_F_DUMP_INTR is set in message. </p>
</td></tr>
</table>
</dd>
</dl>
<p>Definition at line <a class="el" href="handlers_8h_source.html#l00090">90</a> of file <a class="el" href="handlers_8h_source.html">handlers.h</a>.</p>
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<hr/><h2>Function Documentation</h2>
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<td class="memname">struct nl_cb* nl_cb_alloc </td>
<td>(</td>
<td class="paramtype">enum <a class="el" href="group__cb.html#gaba3fabad0c62db483941101e1a18d14d">nl_cb_kind</a> </td>
<td class="paramname"><em>kind</em></td><td>)</td>
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<p>Allocate a new callback handle. </p>
<dl class="params"><dt>Parameters:</dt><dd>
<table class="params">
<tr><td class="paramname">kind</td><td>callback kind to be used for initialization </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns:</dt><dd>Newly allocated callback handle or NULL </dd></dl>
<p>Definition at line <a class="el" href="handlers_8c_source.html#l00200">200</a> of file <a class="el" href="handlers_8c_source.html">handlers.c</a>.</p>
<p>References <a class="el" href="handlers_8c_source.html#l00330">nl_cb_err()</a>, and <a class="el" href="handlers_8c_source.html#l00280">nl_cb_set()</a>.</p>
<p>Referenced by <a class="el" href="handlers_8c_source.html#l00228">nl_cb_clone()</a>, and <a class="el" href="socket_8c_source.html#l00141">nl_socket_alloc()</a>.</p>
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<td class="memname">struct nl_cb* nl_cb_clone </td>
<td>(</td>
<td class="paramtype">struct nl_cb * </td>
<td class="paramname"><em>orig</em></td><td>)</td>
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<p>Clone an existing callback handle. </p>
<dl class="params"><dt>Parameters:</dt><dd>
<table class="params">
<tr><td class="paramname">orig</td><td>original callback handle </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns:</dt><dd>Newly allocated callback handle being a duplicate of orig or NULL </dd></dl>
<p>Definition at line <a class="el" href="handlers_8c_source.html#l00228">228</a> of file <a class="el" href="handlers_8c_source.html">handlers.c</a>.</p>
<p>References <a class="el" href="handlers_8c_source.html#l00200">nl_cb_alloc()</a>, and <a class="el" href="handlers_8h_source.html#l00074">NL_CB_DEFAULT</a>.</p>
<p>Referenced by <a class="el" href="cache__mngr_8c_source.html#l00417">nl_cache_mngr_data_ready()</a>, <a class="el" href="nl_8c_source.html#l01073">nl_pickup()</a>, and <a class="el" href="nl_8c_source.html#l01015">nl_wait_for_ack()</a>.</p>
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<td class="memname">int nl_cb_set </td>
<td>(</td>
<td class="paramtype">struct nl_cb * </td>
<td class="paramname"><em>cb</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">enum <a class="el" href="group__cb.html#ga3f60f4515ada826d2bf16395ee722363">nl_cb_type</a> </td>
<td class="paramname"><em>type</em>, </td>
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<td class="paramtype">enum <a class="el" href="group__cb.html#gaba3fabad0c62db483941101e1a18d14d">nl_cb_kind</a> </td>
<td class="paramname"><em>kind</em>, </td>
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<td class="paramtype"><a class="el" href="group__cb.html#ga1bf04ce17ab1b5867017556a6b4ba729">nl_recvmsg_msg_cb_t</a> </td>
<td class="paramname"><em>func</em>, </td>
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<td class="paramtype">void * </td>
<td class="paramname"><em>arg</em> </td>
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<p>Set up a callback. </p>
<dl class="params"><dt>Parameters:</dt><dd>
<table class="params">
<tr><td class="paramname">cb</td><td>callback set </td></tr>
<tr><td class="paramname">type</td><td>callback to modify </td></tr>
<tr><td class="paramname">kind</td><td>kind of implementation </td></tr>
<tr><td class="paramname">func</td><td>callback function (NL_CB_CUSTOM) </td></tr>
<tr><td class="paramname">arg</td><td>argument passed to callback</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns:</dt><dd>0 on success or a negative error code </dd></dl>
<p>Definition at line <a class="el" href="handlers_8c_source.html#l00280">280</a> of file <a class="el" href="handlers_8c_source.html">handlers.c</a>.</p>
<p>References <a class="el" href="handlers_8h_source.html#l00080">NL_CB_CUSTOM</a>.</p>
<p>Referenced by <a class="el" href="cache__mngr_8c_source.html#l00417">nl_cache_mngr_data_ready()</a>, <a class="el" href="handlers_8c_source.html#l00200">nl_cb_alloc()</a>, <a class="el" href="handlers_8c_source.html#l00309">nl_cb_set_all()</a>, <a class="el" href="nl_8c_source.html#l01073">nl_pickup()</a>, <a class="el" href="socket_8c_source.html#l00212">nl_socket_disable_seq_check()</a>, <a class="el" href="socket_8c_source.html#l00536">nl_socket_modify_cb()</a>, and <a class="el" href="nl_8c_source.html#l01015">nl_wait_for_ack()</a>.</p>
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<td class="memname">int nl_cb_set_all </td>
<td>(</td>
<td class="paramtype">struct nl_cb * </td>
<td class="paramname"><em>cb</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">enum <a class="el" href="group__cb.html#gaba3fabad0c62db483941101e1a18d14d">nl_cb_kind</a> </td>
<td class="paramname"><em>kind</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="group__cb.html#ga1bf04ce17ab1b5867017556a6b4ba729">nl_recvmsg_msg_cb_t</a> </td>
<td class="paramname"><em>func</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">void * </td>
<td class="paramname"><em>arg</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
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<p>Set up a all callbacks. </p>
<dl class="params"><dt>Parameters:</dt><dd>
<table class="params">
<tr><td class="paramname">cb</td><td>callback set </td></tr>
<tr><td class="paramname">kind</td><td>kind of callback </td></tr>
<tr><td class="paramname">func</td><td>callback function </td></tr>
<tr><td class="paramname">arg</td><td>argument to be passwd to callback function</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns:</dt><dd>0 on success or a negative error code </dd></dl>
<p>Definition at line <a class="el" href="handlers_8c_source.html#l00309">309</a> of file <a class="el" href="handlers_8c_source.html">handlers.c</a>.</p>
<p>References <a class="el" href="handlers_8c_source.html#l00280">nl_cb_set()</a>.</p>
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<td class="memname">int nl_cb_err </td>
<td>(</td>
<td class="paramtype">struct nl_cb * </td>
<td class="paramname"><em>cb</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">enum <a class="el" href="group__cb.html#gaba3fabad0c62db483941101e1a18d14d">nl_cb_kind</a> </td>
<td class="paramname"><em>kind</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="group__cb.html#ga2eb817b53fffe9103030c692c73b94df">nl_recvmsg_err_cb_t</a> </td>
<td class="paramname"><em>func</em>, </td>
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<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">void * </td>
<td class="paramname"><em>arg</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
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<p>Set up an error callback. </p>
<dl class="params"><dt>Parameters:</dt><dd>
<table class="params">
<tr><td class="paramname">cb</td><td>callback set </td></tr>
<tr><td class="paramname">kind</td><td>kind of callback </td></tr>
<tr><td class="paramname">func</td><td>callback function </td></tr>
<tr><td class="paramname">arg</td><td>argument to be passed to callback function </td></tr>
</table>
</dd>
</dl>
<p>Definition at line <a class="el" href="handlers_8c_source.html#l00330">330</a> of file <a class="el" href="handlers_8c_source.html">handlers.c</a>.</p>
<p>References <a class="el" href="handlers_8h_source.html#l00080">NL_CB_CUSTOM</a>.</p>
<p>Referenced by <a class="el" href="handlers_8c_source.html#l00200">nl_cb_alloc()</a>, and <a class="el" href="socket_8c_source.html#l00552">nl_socket_modify_err_cb()</a>.</p>
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<td class="memname">void nl_cb_overwrite_recvmsgs </td>
<td>(</td>
<td class="paramtype">struct nl_cb * </td>
<td class="paramname"><em>cb</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int(*)(struct nl_sock *, struct nl_cb *) </td>
<td class="paramname"><em>func</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
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<p>Overwrite internal calls to <a class="el" href="group__send__recv.html#gabb1917e38174d5b00cb313420327c495" title="Receive a set of messages from a netlink socket.">nl_recvmsgs()</a> </p>
<dl class="params"><dt>Parameters:</dt><dd>
<table class="params">
<tr><td class="paramname">cb</td><td>callback set </td></tr>
<tr><td class="paramname">func</td><td>replacement callback for <a class="el" href="group__send__recv.html#gabb1917e38174d5b00cb313420327c495" title="Receive a set of messages from a netlink socket.">nl_recvmsgs()</a> </td></tr>
</table>
</dd>
</dl>
<p>Definition at line <a class="el" href="handlers_8c_source.html#l00359">359</a> of file <a class="el" href="handlers_8c_source.html">handlers.c</a>.</p>
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<td class="memname">void nl_cb_overwrite_recv </td>
<td>(</td>
<td class="paramtype">struct nl_cb * </td>
<td class="paramname"><em>cb</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int(*)(struct nl_sock *, struct sockaddr_nl *, unsigned char **, struct ucred **) </td>
<td class="paramname"><em>func</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</div><div class="memdoc">
<p>Overwrite internal calls to <a class="el" href="group__send__recv.html#ga48ab5192dfa62d6b71760d43a4306d13" title="Receive data from netlink socket.">nl_recv()</a> </p>
<dl class="params"><dt>Parameters:</dt><dd>
<table class="params">
<tr><td class="paramname">cb</td><td>callback set </td></tr>
<tr><td class="paramname">func</td><td>replacement callback for <a class="el" href="group__send__recv.html#ga48ab5192dfa62d6b71760d43a4306d13" title="Receive data from netlink socket.">nl_recv()</a> </td></tr>
</table>
</dd>
</dl>
<p>Definition at line <a class="el" href="handlers_8c_source.html#l00370">370</a> of file <a class="el" href="handlers_8c_source.html">handlers.c</a>.</p>
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<td class="memname">void nl_cb_overwrite_send </td>
<td>(</td>
<td class="paramtype">struct nl_cb * </td>
<td class="paramname"><em>cb</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int(*)(struct nl_sock *, struct nl_msg *) </td>
<td class="paramname"><em>func</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
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<p>Overwrite internal calls to <a class="el" href="group__send__recv.html#ga1e0b4569c49504879875008d012d0b82" title="Transmit Netlink message.">nl_send()</a> </p>
<dl class="params"><dt>Parameters:</dt><dd>
<table class="params">
<tr><td class="paramname">cb</td><td>callback set </td></tr>
<tr><td class="paramname">func</td><td>replacement callback for <a class="el" href="group__send__recv.html#ga1e0b4569c49504879875008d012d0b82" title="Transmit Netlink message.">nl_send()</a> </td></tr>
</table>
</dd>
</dl>
<p>Definition at line <a class="el" href="handlers_8c_source.html#l00382">382</a> of file <a class="el" href="handlers_8c_source.html">handlers.c</a>.</p>
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