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 <span id="projectnumber">3.2.21</span>
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<div class="title">msg.h</div> </div>
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">/*</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment"> * netlink/msg.c Netlink Messages Interface</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> * This library is free software; you can redistribute it and/or</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"> * modify it under the terms of the GNU Lesser General Public</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> * License as published by the Free Software Foundation version 2.1</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> * of the License.</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"> * Copyright (c) 2003-2006 Thomas Graf <tgraf@suug.ch></span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> </div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="preprocessor">#ifndef NETLINK_MSG_H_</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="preprocessor"></span><span class="preprocessor">#define NETLINK_MSG_H_</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="preprocessor">#include <netlink/netlink.h></span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="preprocessor">#include <netlink/object.h></span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="preprocessor">#include <netlink/attr.h></span></div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> </div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="preprocessor">#ifdef __cplusplus</span></div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="preprocessor"></span><span class="keyword">extern</span> <span class="stringliteral">"C"</span> {</div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="preprocessor">#define NL_DONTPAD 0</span></div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="preprocessor"></span><span class="comment"></span></div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="comment">/**</span></div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="comment"> * @ingroup msg</span></div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="comment"> * @brief</span></div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="comment"> * Will cause the netlink port to be set to the port assigned to</span></div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="comment"> * the netlink icoket ust before sending the message off.</span></div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="comment"> * @note Requires the use of nl_send_auto()!</span></div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00033"></a><span class="lineno"><a class="code" href="group__msg.html#ga051b2a915978645b72ef61f2f3a0fb5c"> 33</a></span> <span class="preprocessor">#define NL_AUTO_PORT 0</span></div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="preprocessor"></span><span class="preprocessor">#define NL_AUTO_PID NL_AUTO_PORT</span></div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="preprocessor"></span><span class="comment"></span></div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="comment">/**</span></div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="comment"> * @ingroup msg</span></div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="comment"> * @brief</span></div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="comment"> * May be used to refer to a sequence number which should be</span></div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="comment"> * automatically set just before sending the message off.</span></div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span> <span class="comment"> * @note Requires the use of nl_send_auto()!</span></div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00044"></a><span class="lineno"><a class="code" href="group__msg.html#gaca80a9f4084020b28afdb663b670dc4b"> 44</a></span> <span class="preprocessor">#define NL_AUTO_SEQ 0</span></div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span> <span class="keyword">struct </span>nl_msg;</div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span> <span class="keyword">struct </span>nl_tree;</div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span> <span class="keyword">struct </span>ucred;</div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span> </div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span> <span class="keyword">extern</span> <span class="keywordtype">int</span> <a class="code" href="group__msg.html#gaeaf37336f02abd75ae9a82f6c734285a" title="Calculates size of netlink message based on payload length.">nlmsg_size</a>(<span class="keywordtype">int</span>);</div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span> <span class="keyword">extern</span> <span class="keywordtype">int</span> <a class="code" href="group__msg.html#ga0734c5b291e451c26051ad3b6ef083bd" title="Calculates size of netlink message including padding based on payload length.">nlmsg_total_size</a>(<span class="keywordtype">int</span>);</div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span> <span class="keyword">extern</span> <span class="keywordtype">int</span> <a class="code" href="group__msg.html#gad47e979aa22aca4b8eb1c90234dea678" title="Size of padding that needs to be added at end of message.">nlmsg_padlen</a>(<span class="keywordtype">int</span>);</div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span> </div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span> <span class="keyword">extern</span> <span class="keywordtype">void</span> * <a class="code" href="group__msg.html#gae44a904bb40c8b5f5ff31539c21cfa5a" title="Return pointer to message payload.">nlmsg_data</a>(<span class="keyword">const</span> <span class="keyword">struct</span> nlmsghdr *);</div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span> <span class="keyword">extern</span> <span class="keywordtype">int</span> <a class="code" href="group__msg.html#gaaaa984913b8f0be8cf27939fadc6d65c" title="Return length of message payload.">nlmsg_datalen</a>(<span class="keyword">const</span> <span class="keyword">struct</span> nlmsghdr *);</div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span> <span class="keyword">extern</span> <span class="keywordtype">void</span> * nlmsg_tail(<span class="keyword">const</span> <span class="keyword">struct</span> nlmsghdr *);</div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span> </div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span> <span class="comment">/* attribute access */</span></div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span> <span class="keyword">extern</span> <span class="keyword">struct </span>nlattr * <a class="code" href="group__msg.html#ga203fdf0a4637e05df44de94c60d8e909" title="head of attributes data">nlmsg_attrdata</a>(<span class="keyword">const</span> <span class="keyword">struct</span> nlmsghdr *, <span class="keywordtype">int</span>);</div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span> <span class="keyword">extern</span> <span class="keywordtype">int</span> <a class="code" href="group__msg.html#gac9a4689d22aaa2f630476a7826f25fec" title="length of attributes data">nlmsg_attrlen</a>(<span class="keyword">const</span> <span class="keyword">struct</span> nlmsghdr *, <span class="keywordtype">int</span>);</div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span> </div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span> <span class="comment">/* message parsing */</span></div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span> <span class="keyword">extern</span> <span class="keywordtype">int</span> nlmsg_valid_hdr(<span class="keyword">const</span> <span class="keyword">struct</span> nlmsghdr *, <span class="keywordtype">int</span>);</div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span> <span class="keyword">extern</span> <span class="keywordtype">int</span> <a class="code" href="group__msg.html#ga0107484894e5be506c1e1bb6cb09dbe2" title="check if the netlink message fits into the remaining bytes">nlmsg_ok</a>(<span class="keyword">const</span> <span class="keyword">struct</span> nlmsghdr *, <span class="keywordtype">int</span>);</div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span> <span class="keyword">extern</span> <span class="keyword">struct </span>nlmsghdr * <a class="code" href="group__msg.html#gafae8cbad57755ac6d758f6073cb22134" title="next netlink message in message stream">nlmsg_next</a>(<span class="keyword">struct</span> nlmsghdr *, <span class="keywordtype">int</span> *);</div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span> <span class="keyword">extern</span> <span class="keywordtype">int</span> <a class="code" href="group__msg.html#ga2671eefe95c3e44dec8ddab51ae57593" title="parse attributes of a netlink message">nlmsg_parse</a>(<span class="keyword">struct</span> nlmsghdr *, <span class="keywordtype">int</span>, <span class="keyword">struct</span> nlattr **,</div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  <span class="keywordtype">int</span>, <span class="keyword">struct</span> <a class="code" href="structnla__policy.html" title="Attribute validation policy.">nla_policy</a> *);</div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span> <span class="keyword">extern</span> <span class="keyword">struct </span>nlattr * <a class="code" href="group__msg.html#gafd0b61236f262b7cc720b1edd01458b4" title="nlmsg_find_attr - find a specific attribute in a netlink message">nlmsg_find_attr</a>(<span class="keyword">struct</span> nlmsghdr *, <span class="keywordtype">int</span>, <span class="keywordtype">int</span>);</div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span> <span class="keyword">extern</span> <span class="keywordtype">int</span> <a class="code" href="group__msg.html#gac488c8e2fcaefe96cadd33ebdc4a922f" title="nlmsg_validate - validate a netlink message including attributes">nlmsg_validate</a>(<span class="keyword">struct</span> nlmsghdr *, <span class="keywordtype">int</span>, <span class="keywordtype">int</span>,</div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  <span class="keyword">struct</span> <a class="code" href="structnla__policy.html" title="Attribute validation policy.">nla_policy</a> *);</div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span> </div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span> <span class="keyword">extern</span> <span class="keyword">struct </span>nl_msg * <a class="code" href="group__msg.html#ga89c936bdf5e73455bb1640a0eb8a020d" title="Allocate a new netlink message with the default maximum payload size.">nlmsg_alloc</a>(<span class="keywordtype">void</span>);</div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span> <span class="keyword">extern</span> <span class="keyword">struct </span>nl_msg * <a class="code" href="group__msg.html#ga0d879daa3a3a7d53fbafe0d7d72a3994" title="Allocate a new netlink message with maximum payload size specified.">nlmsg_alloc_size</a>(<span class="keywordtype">size_t</span>);</div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span> <span class="keyword">extern</span> <span class="keyword">struct </span>nl_msg * <a class="code" href="group__msg.html#ga580d8697d19050c55060bc10ab4eae9f" title="Allocate a new netlink message.">nlmsg_alloc_simple</a>(<span class="keywordtype">int</span>, <span class="keywordtype">int</span>);</div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span> <span class="keyword">extern</span> <span class="keywordtype">void</span> <a class="code" href="group__msg.html#gaca38cf7b85baa19aad3cf33eff7e7a85" title="Set the default maximum message payload size for allocated messages.">nlmsg_set_default_size</a>(<span class="keywordtype">size_t</span>);</div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span> <span class="keyword">extern</span> <span class="keyword">struct </span>nl_msg * <a class="code" href="group__msg.html#gab89e1b4e969a091fed4ef851f3339756" title="Allocate a new netlink message and inherit netlink message header.">nlmsg_inherit</a>(<span class="keyword">struct</span> nlmsghdr *);</div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span> <span class="keyword">extern</span> <span class="keyword">struct </span>nl_msg * <a class="code" href="group__msg.html#ga2695036495d7127e610bc99fee5c9674" title="Convert a netlink message received from a netlink socket to a nl_msg.">nlmsg_convert</a>(<span class="keyword">struct</span> nlmsghdr *);</div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span> <span class="keyword">extern</span> <span class="keywordtype">void</span> * <a class="code" href="group__msg.html#ga206eac17e0e75ae8457a513612395554" title="Reserve room for additional data in a netlink message.">nlmsg_reserve</a>(<span class="keyword">struct</span> nl_msg *, <span class="keywordtype">size_t</span>, <span class="keywordtype">int</span>);</div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span> <span class="keyword">extern</span> <span class="keywordtype">int</span> <a class="code" href="group__msg.html#gacc5e5ade5675d041f86c7c8693f7088d" title="Append data to tail of a netlink message.">nlmsg_append</a>(<span class="keyword">struct</span> nl_msg *, <span class="keywordtype">void</span> *, <span class="keywordtype">size_t</span>, <span class="keywordtype">int</span>);</div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span> <span class="keyword">extern</span> <span class="keywordtype">int</span> <a class="code" href="group__msg.html#ga87ebc73ca93e5fa90742021eba448e60" title="Expand maximum payload size of a netlink message.">nlmsg_expand</a>(<span class="keyword">struct</span> nl_msg *, <span class="keywordtype">size_t</span>);</div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span> </div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span> <span class="keyword">extern</span> <span class="keyword">struct </span>nlmsghdr * <a class="code" href="group__msg.html#ga16919a9a8579f8b538b0376781c1839d" title="Add a netlink message header to a netlink message.">nlmsg_put</a>(<span class="keyword">struct</span> nl_msg *, uint32_t, uint32_t,</div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  <span class="keywordtype">int</span>, <span class="keywordtype">int</span>, <span class="keywordtype">int</span>);</div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span> <span class="keyword">extern</span> <span class="keyword">struct </span>nlmsghdr * <a class="code" href="group__msg.html#gaa5f29579d86d2bdab26c312b44b56de7" title="Return actual netlink message.">nlmsg_hdr</a>(<span class="keyword">struct</span> nl_msg *);</div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span> <span class="keyword">extern</span> <span class="keywordtype">void</span> <a class="code" href="group__msg.html#ga2da2dcdd722077d8568518b10ad5b422" title="Acquire a reference on a netlink message.">nlmsg_get</a>(<span class="keyword">struct</span> nl_msg *);</div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span> <span class="keyword">extern</span> <span class="keywordtype">void</span> <a class="code" href="group__msg.html#ga6fb0fda0b5fdc99c786d65cb9c53c6bc" title="Release a reference from an netlink message.">nlmsg_free</a>(<span class="keyword">struct</span> nl_msg *);</div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span> </div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span> <span class="comment">/* attribute modification */</span></div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span> <span class="keyword">extern</span> <span class="keywordtype">void</span> nlmsg_set_proto(<span class="keyword">struct</span> nl_msg *, <span class="keywordtype">int</span>);</div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span> <span class="keyword">extern</span> <span class="keywordtype">int</span> nlmsg_get_proto(<span class="keyword">struct</span> nl_msg *);</div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span> <span class="keyword">extern</span> <span class="keywordtype">size_t</span> nlmsg_get_max_size(<span class="keyword">struct</span> nl_msg *);</div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span> <span class="keyword">extern</span> <span class="keywordtype">void</span> nlmsg_set_src(<span class="keyword">struct</span> nl_msg *, <span class="keyword">struct</span> sockaddr_nl *);</div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span> <span class="keyword">extern</span> <span class="keyword">struct </span>sockaddr_nl *nlmsg_get_src(<span class="keyword">struct</span> nl_msg *);</div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span> <span class="keyword">extern</span> <span class="keywordtype">void</span> nlmsg_set_dst(<span class="keyword">struct</span> nl_msg *, <span class="keyword">struct</span> sockaddr_nl *);</div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span> <span class="keyword">extern</span> <span class="keyword">struct </span>sockaddr_nl *nlmsg_get_dst(<span class="keyword">struct</span> nl_msg *);</div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span> <span class="keyword">extern</span> <span class="keywordtype">void</span> nlmsg_set_creds(<span class="keyword">struct</span> nl_msg *, <span class="keyword">struct</span> ucred *);</div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span> <span class="keyword">extern</span> <span class="keyword">struct </span>ucred * nlmsg_get_creds(<span class="keyword">struct</span> nl_msg *);</div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span> </div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span> <span class="keyword">extern</span> <span class="keywordtype">char</span> * nl_nlmsgtype2str(<span class="keywordtype">int</span>, <span class="keywordtype">char</span> *, <span class="keywordtype">size_t</span>);</div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span> <span class="keyword">extern</span> <span class="keywordtype">int</span> nl_str2nlmsgtype(<span class="keyword">const</span> <span class="keywordtype">char</span> *);</div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span> </div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span> <span class="keyword">extern</span> <span class="keywordtype">char</span> * nl_nlmsg_flags2str(<span class="keywordtype">int</span>, <span class="keywordtype">char</span> *, <span class="keywordtype">size_t</span>);</div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span> </div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span> <span class="keyword">extern</span> <span class="keywordtype">int</span> nl_msg_parse(<span class="keyword">struct</span> nl_msg *,</div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  <span class="keywordtype">void</span> (*cb)(<span class="keyword">struct</span> nl_object *, <span class="keywordtype">void</span> *),</div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  <span class="keywordtype">void</span> *);</div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span> </div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span> <span class="keyword">extern</span> <span class="keywordtype">void</span> <a class="code" href="group__msg.html#ga062de3af7d634b7638c053e4ba67a7eb" title="Dump message in human readable format to file descriptor.">nl_msg_dump</a>(<span class="keyword">struct</span> nl_msg *, FILE *);</div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span> <span class="comment"></span></div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span> <span class="comment">/**</span></div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span> <span class="comment"> * @name Iterators</span></div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span> <span class="comment"> * @{</span></div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span> <span class="comment"></span></div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span> <span class="comment">/**</span></div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span> <span class="comment"> * @ingroup msg</span></div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span> <span class="comment"> * Iterate over a stream of attributes in a message</span></div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span> <span class="comment"> * @arg pos loop counter, set to current attribute</span></div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span> <span class="comment"> * @arg nlh netlink message header</span></div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span> <span class="comment"> * @arg hdrlen length of family header</span></div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span> <span class="comment"> * @arg rem initialized to len, holds bytes currently remaining in stream</span></div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00123"></a><span class="lineno"><a class="code" href="group__msg.html#ga8db9e6499b50ccdc5f7574940c4b1adf"> 123</a></span> <span class="preprocessor">#define nlmsg_for_each_attr(pos, nlh, hdrlen, rem) \</span></div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span> <span class="preprocessor"> nla_for_each_attr(pos, nlmsg_attrdata(nlh, hdrlen), \</span></div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span> <span class="preprocessor"> nlmsg_attrlen(nlh, hdrlen), rem)</span></div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span> <span class="preprocessor"></span><span class="comment"></span></div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span> <span class="comment">/**</span></div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span> <span class="comment"> * Iterate over a stream of messages</span></div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span> <span class="comment"> * @arg pos loop counter, set to current message</span></div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span> <span class="comment"> * @arg head head of message stream</span></div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span> <span class="comment"> * @arg len length of message stream</span></div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00133"></a><span class="lineno"><a class="code" href="group__msg.html#ga4456c988a12d7c3d6e048dc183b4f89f"> 133</a></span> <span class="preprocessor">#define nlmsg_for_each(pos, head, len) \</span></div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span> <span class="preprocessor"> for (int rem = len, pos = head; \</span></div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span> <span class="preprocessor"> nlmsg_ok(pos, rem); \</span></div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span> <span class="preprocessor"> pos = nlmsg_next(pos, &rem))</span></div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span> <span class="preprocessor">#define nlmsg_for_each_msg(pos, head, len, rem) \</span></div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span> <span class="preprocessor"> nlmsg_for_each(pos, head, len)</span></div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span> <span class="preprocessor"></span><span class="comment"></span></div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span> <span class="comment">/** @} */</span></div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span> </div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span> <span class="preprocessor">#ifdef __cplusplus</span></div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span> <span class="preprocessor"></span>}</div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span> <span class="preprocessor">#endif</span></div>
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