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<div class="headertitle"><div class="title">fuse_signals.c</div></div>
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<div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno"> 1</span><span class="comment">/*</span></div>
<div class="line"><a id="l00002" name="l00002"></a><span class="lineno"> 2</span><span class="comment"> FUSE: Filesystem in Userspace</span></div>
<div class="line"><a id="l00003" name="l00003"></a><span class="lineno"> 3</span><span class="comment"> Copyright (C) 2001-2007 Miklos Szeredi <miklos@szeredi.hu></span></div>
<div class="line"><a id="l00004" name="l00004"></a><span class="lineno"> 4</span><span class="comment"></span> </div>
<div class="line"><a id="l00005" name="l00005"></a><span class="lineno"> 5</span><span class="comment"> Utility functions for setting signal handlers.</span></div>
<div class="line"><a id="l00006" name="l00006"></a><span class="lineno"> 6</span><span class="comment"></span> </div>
<div class="line"><a id="l00007" name="l00007"></a><span class="lineno"> 7</span><span class="comment"> This program can be distributed under the terms of the GNU LGPLv2.</span></div>
<div class="line"><a id="l00008" name="l00008"></a><span class="lineno"> 8</span><span class="comment"> See the file COPYING.LIB</span></div>
<div class="line"><a id="l00009" name="l00009"></a><span class="lineno"> 9</span><span class="comment">*/</span></div>
<div class="line"><a id="l00010" name="l00010"></a><span class="lineno"> 10</span> </div>
<div class="line"><a id="l00011" name="l00011"></a><span class="lineno"> 11</span><span class="preprocessor">#include "fuse_config.h"</span></div>
<div class="line"><a id="l00012" name="l00012"></a><span class="lineno"> 12</span><span class="preprocessor">#include "fuse_lowlevel.h"</span></div>
<div class="line"><a id="l00013" name="l00013"></a><span class="lineno"> 13</span><span class="preprocessor">#include "fuse_i.h"</span></div>
<div class="line"><a id="l00014" name="l00014"></a><span class="lineno"> 14</span> </div>
<div class="line"><a id="l00015" name="l00015"></a><span class="lineno"> 15</span><span class="preprocessor">#include <stdio.h></span></div>
<div class="line"><a id="l00016" name="l00016"></a><span class="lineno"> 16</span><span class="preprocessor">#include <string.h></span></div>
<div class="line"><a id="l00017" name="l00017"></a><span class="lineno"> 17</span><span class="preprocessor">#include <signal.h></span></div>
<div class="line"><a id="l00018" name="l00018"></a><span class="lineno"> 18</span><span class="preprocessor">#include <stdlib.h></span></div>
<div class="line"><a id="l00019" name="l00019"></a><span class="lineno"> 19</span><span class="preprocessor">#include <errno.h></span></div>
<div class="line"><a id="l00020" name="l00020"></a><span class="lineno"> 20</span> </div>
<div class="line"><a id="l00021" name="l00021"></a><span class="lineno"> 21</span><span class="preprocessor">#ifdef HAVE_BACKTRACE</span></div>
<div class="line"><a id="l00022" name="l00022"></a><span class="lineno"> 22</span><span class="preprocessor">#include <execinfo.h></span></div>
<div class="line"><a id="l00023" name="l00023"></a><span class="lineno"> 23</span><span class="preprocessor">#endif</span></div>
<div class="line"><a id="l00024" name="l00024"></a><span class="lineno"> 24</span> </div>
<div class="line"><a id="l00025" name="l00025"></a><span class="lineno"> 25</span><span class="keyword">static</span> <span class="keywordtype">int</span> teardown_sigs[] = { SIGHUP, SIGINT, SIGTERM };</div>
<div class="line"><a id="l00026" name="l00026"></a><span class="lineno"> 26</span><span class="keyword">static</span> <span class="keywordtype">int</span> ignore_sigs[] = { SIGPIPE};</div>
<div class="line"><a id="l00027" name="l00027"></a><span class="lineno"> 27</span><span class="keyword">static</span> <span class="keywordtype">int</span> fail_sigs[] = { SIGILL, SIGTRAP, SIGABRT, SIGBUS, SIGFPE, SIGSEGV };</div>
<div class="line"><a id="l00028" name="l00028"></a><span class="lineno"> 28</span><span class="keyword">static</span> <span class="keyword">struct </span>fuse_session *fuse_instance;</div>
<div class="line"><a id="l00029" name="l00029"></a><span class="lineno"> 29</span> </div>
<div class="line"><a id="l00030" name="l00030"></a><span class="lineno"> 30</span><span class="preprocessor">#define BT_STACK_SZ (1024 * 1024)</span></div>
<div class="line"><a id="l00031" name="l00031"></a><span class="lineno"> 31</span><span class="keyword">static</span> <span class="keywordtype">void</span> *backtrace_buffer[BT_STACK_SZ];</div>
<div class="line"><a id="l00032" name="l00032"></a><span class="lineno"> 32</span> </div>
<div class="line"><a id="l00033" name="l00033"></a><span class="lineno"> 33</span><span class="keyword">static</span> <span class="keywordtype">void</span> dump_stack(<span class="keywordtype">void</span>)</div>
<div class="line"><a id="l00034" name="l00034"></a><span class="lineno"> 34</span>{</div>
<div class="line"><a id="l00035" name="l00035"></a><span class="lineno"> 35</span><span class="preprocessor">#ifdef HAVE_BACKTRACE</span></div>
<div class="line"><a id="l00036" name="l00036"></a><span class="lineno"> 36</span> <span class="keywordtype">char</span> **strings;</div>
<div class="line"><a id="l00037" name="l00037"></a><span class="lineno"> 37</span> </div>
<div class="line"><a id="l00038" name="l00038"></a><span class="lineno"> 38</span> <span class="keywordtype">int</span> nptrs = backtrace(backtrace_buffer, BT_STACK_SZ);</div>
<div class="line"><a id="l00039" name="l00039"></a><span class="lineno"> 39</span> strings = backtrace_symbols(backtrace_buffer, nptrs);</div>
<div class="line"><a id="l00040" name="l00040"></a><span class="lineno"> 40</span> </div>
<div class="line"><a id="l00041" name="l00041"></a><span class="lineno"> 41</span> <span class="keywordflow">if</span> (strings == NULL) {</div>
<div class="line"><a id="l00042" name="l00042"></a><span class="lineno"> 42</span> <a class="code hl_function" href="fuse-3_817_81_8dir_2include_2fuse__log_8h.html#a4506ffd6ed3a631e01999b32b1eb8621">fuse_log</a>(FUSE_LOG_ERR, <span class="stringliteral">"Failed to get backtrace symbols: %s\n"</span>,</div>
<div class="line"><a id="l00043" name="l00043"></a><span class="lineno"> 43</span> strerror(errno));</div>
<div class="line"><a id="l00044" name="l00044"></a><span class="lineno"> 44</span> <span class="keywordflow">return</span>;</div>
<div class="line"><a id="l00045" name="l00045"></a><span class="lineno"> 45</span> }</div>
<div class="line"><a id="l00046" name="l00046"></a><span class="lineno"> 46</span> </div>
<div class="line"><a id="l00047" name="l00047"></a><span class="lineno"> 47</span> <span class="keywordflow">for</span> (<span class="keywordtype">int</span> idx = 0; idx < nptrs; idx++)</div>
<div class="line"><a id="l00048" name="l00048"></a><span class="lineno"> 48</span> <a class="code hl_function" href="fuse-3_817_81_8dir_2include_2fuse__log_8h.html#a4506ffd6ed3a631e01999b32b1eb8621">fuse_log</a>(FUSE_LOG_ERR, <span class="stringliteral">"%s\n"</span>, strings[idx]);</div>
<div class="line"><a id="l00049" name="l00049"></a><span class="lineno"> 49</span> </div>
<div class="line"><a id="l00050" name="l00050"></a><span class="lineno"> 50</span> free(strings);</div>
<div class="line"><a id="l00051" name="l00051"></a><span class="lineno"> 51</span><span class="preprocessor">#endif</span></div>
<div class="line"><a id="l00052" name="l00052"></a><span class="lineno"> 52</span>}</div>
<div class="line"><a id="l00053" name="l00053"></a><span class="lineno"> 53</span> </div>
<div class="line"><a id="l00054" name="l00054"></a><span class="lineno"> 54</span><span class="keyword">static</span> <span class="keywordtype">void</span> exit_handler(<span class="keywordtype">int</span> sig)</div>
<div class="line"><a id="l00055" name="l00055"></a><span class="lineno"> 55</span>{</div>
<div class="line"><a id="l00056" name="l00056"></a><span class="lineno"> 56</span> <span class="keywordflow">if</span> (fuse_instance == NULL)</div>
<div class="line"><a id="l00057" name="l00057"></a><span class="lineno"> 57</span> <span class="keywordflow">return</span>;</div>
<div class="line"><a id="l00058" name="l00058"></a><span class="lineno"> 58</span> </div>
<div class="line"><a id="l00059" name="l00059"></a><span class="lineno"> 59</span> <a class="code hl_function" href="fuse-3_817_81_8dir_2include_2fuse__lowlevel_8h.html#a198429f3fbc23ef29ef9971271827690">fuse_session_exit</a>(fuse_instance);</div>
<div class="line"><a id="l00060" name="l00060"></a><span class="lineno"> 60</span> </div>
<div class="line"><a id="l00061" name="l00061"></a><span class="lineno"> 61</span> <span class="keywordflow">if</span> (sig < 0) {</div>
<div class="line"><a id="l00062" name="l00062"></a><span class="lineno"> 62</span> <a class="code hl_function" href="fuse-3_817_81_8dir_2include_2fuse__log_8h.html#a4506ffd6ed3a631e01999b32b1eb8621">fuse_log</a>(FUSE_LOG_ERR,</div>
<div class="line"><a id="l00063" name="l00063"></a><span class="lineno"> 63</span> <span class="stringliteral">"assertion error: signal value <= 0\n"</span>);</div>
<div class="line"><a id="l00064" name="l00064"></a><span class="lineno"> 64</span> dump_stack();</div>
<div class="line"><a id="l00065" name="l00065"></a><span class="lineno"> 65</span> abort();</div>
<div class="line"><a id="l00066" name="l00066"></a><span class="lineno"> 66</span> fuse_instance->error = sig;</div>
<div class="line"><a id="l00067" name="l00067"></a><span class="lineno"> 67</span> }</div>
<div class="line"><a id="l00068" name="l00068"></a><span class="lineno"> 68</span> </div>
<div class="line"><a id="l00069" name="l00069"></a><span class="lineno"> 69</span> fuse_instance->error = sig;</div>
<div class="line"><a id="l00070" name="l00070"></a><span class="lineno"> 70</span>}</div>
<div class="line"><a id="l00071" name="l00071"></a><span class="lineno"> 71</span> </div>
<div class="line"><a id="l00072" name="l00072"></a><span class="lineno"> 72</span><span class="keyword">static</span> <span class="keywordtype">void</span> exit_backtrace(<span class="keywordtype">int</span> sig)</div>
<div class="line"><a id="l00073" name="l00073"></a><span class="lineno"> 73</span>{</div>
<div class="line"><a id="l00074" name="l00074"></a><span class="lineno"> 74</span> <span class="keywordflow">if</span> (fuse_instance == NULL)</div>
<div class="line"><a id="l00075" name="l00075"></a><span class="lineno"> 75</span> <span class="keywordflow">return</span>;</div>
<div class="line"><a id="l00076" name="l00076"></a><span class="lineno"> 76</span> </div>
<div class="line"><a id="l00077" name="l00077"></a><span class="lineno"> 77</span> <a class="code hl_function" href="fuse-3_817_81_8dir_2include_2fuse__lowlevel_8h.html#a198429f3fbc23ef29ef9971271827690">fuse_session_exit</a>(fuse_instance);</div>
<div class="line"><a id="l00078" name="l00078"></a><span class="lineno"> 78</span> </div>
<div class="line"><a id="l00079" name="l00079"></a><span class="lineno"> 79</span> <a class="code hl_function" href="fuse-3_817_81_8dir_2include_2fuse__common_8h.html#aeb674bbc11074c4fe520b952d6bfdd30">fuse_remove_signal_handlers</a>(fuse_instance);</div>
<div class="line"><a id="l00080" name="l00080"></a><span class="lineno"> 80</span> <a class="code hl_function" href="fuse-3_817_81_8dir_2include_2fuse__log_8h.html#a4506ffd6ed3a631e01999b32b1eb8621">fuse_log</a>(FUSE_LOG_ERR, <span class="stringliteral">"Got signal: %d\n"</span>, sig);</div>
<div class="line"><a id="l00081" name="l00081"></a><span class="lineno"> 81</span> dump_stack();</div>
<div class="line"><a id="l00082" name="l00082"></a><span class="lineno"> 82</span> abort();</div>
<div class="line"><a id="l00083" name="l00083"></a><span class="lineno"> 83</span>}</div>
<div class="line"><a id="l00084" name="l00084"></a><span class="lineno"> 84</span> </div>
<div class="line"><a id="l00085" name="l00085"></a><span class="lineno"> 85</span> </div>
<div class="line"><a id="l00086" name="l00086"></a><span class="lineno"> 86</span><span class="keyword">static</span> <span class="keywordtype">void</span> do_nothing(<span class="keywordtype">int</span> sig)</div>
<div class="line"><a id="l00087" name="l00087"></a><span class="lineno"> 87</span>{</div>
<div class="line"><a id="l00088" name="l00088"></a><span class="lineno"> 88</span> (void) sig;</div>
<div class="line"><a id="l00089" name="l00089"></a><span class="lineno"> 89</span>}</div>
<div class="line"><a id="l00090" name="l00090"></a><span class="lineno"> 90</span> </div>
<div class="line"><a id="l00091" name="l00091"></a><span class="lineno"> 91</span><span class="keyword">static</span> <span class="keywordtype">int</span> set_one_signal_handler(<span class="keywordtype">int</span> sig, <span class="keywordtype">void</span> (*handler)(<span class="keywordtype">int</span>), <span class="keywordtype">int</span> remove)</div>
<div class="line"><a id="l00092" name="l00092"></a><span class="lineno"> 92</span>{</div>
<div class="line"><a id="l00093" name="l00093"></a><span class="lineno"> 93</span> <span class="keyword">struct </span>sigaction sa;</div>
<div class="line"><a id="l00094" name="l00094"></a><span class="lineno"> 94</span> <span class="keyword">struct </span>sigaction old_sa;</div>
<div class="line"><a id="l00095" name="l00095"></a><span class="lineno"> 95</span> </div>
<div class="line"><a id="l00096" name="l00096"></a><span class="lineno"> 96</span> memset(&sa, 0, <span class="keyword">sizeof</span>(<span class="keyword">struct</span> sigaction));</div>
<div class="line"><a id="l00097" name="l00097"></a><span class="lineno"> 97</span> sa.sa_handler = remove ? SIG_DFL : handler;</div>
<div class="line"><a id="l00098" name="l00098"></a><span class="lineno"> 98</span> sigemptyset(&(sa.sa_mask));</div>
<div class="line"><a id="l00099" name="l00099"></a><span class="lineno"> 99</span> sa.sa_flags = 0;</div>
<div class="line"><a id="l00100" name="l00100"></a><span class="lineno"> 100</span> </div>
<div class="line"><a id="l00101" name="l00101"></a><span class="lineno"> 101</span> <span class="keywordflow">if</span> (sigaction(sig, NULL, &old_sa) == -1) {</div>
<div class="line"><a id="l00102" name="l00102"></a><span class="lineno"> 102</span> perror(<span class="stringliteral">"fuse: cannot get old signal handler"</span>);</div>
<div class="line"><a id="l00103" name="l00103"></a><span class="lineno"> 103</span> <span class="keywordflow">return</span> -1;</div>
<div class="line"><a id="l00104" name="l00104"></a><span class="lineno"> 104</span> }</div>
<div class="line"><a id="l00105" name="l00105"></a><span class="lineno"> 105</span> </div>
<div class="line"><a id="l00106" name="l00106"></a><span class="lineno"> 106</span> <span class="keywordflow">if</span> (old_sa.sa_handler == (remove ? handler : SIG_DFL) &&</div>
<div class="line"><a id="l00107" name="l00107"></a><span class="lineno"> 107</span> sigaction(sig, &sa, NULL) == -1) {</div>
<div class="line"><a id="l00108" name="l00108"></a><span class="lineno"> 108</span> perror(<span class="stringliteral">"fuse: cannot set signal handler"</span>);</div>
<div class="line"><a id="l00109" name="l00109"></a><span class="lineno"> 109</span> <span class="keywordflow">return</span> -1;</div>
<div class="line"><a id="l00110" name="l00110"></a><span class="lineno"> 110</span> }</div>
<div class="line"><a id="l00111" name="l00111"></a><span class="lineno"> 111</span> <span class="keywordflow">return</span> 0;</div>
<div class="line"><a id="l00112" name="l00112"></a><span class="lineno"> 112</span>}</div>
<div class="line"><a id="l00113" name="l00113"></a><span class="lineno"> 113</span> </div>
<div class="line"><a id="l00114" name="l00114"></a><span class="lineno"> 114</span><span class="keyword">static</span> <span class="keywordtype">int</span> _fuse_set_signal_handlers(<span class="keywordtype">int</span> signals[], <span class="keywordtype">int</span> nr_signals,</div>
<div class="line"><a id="l00115" name="l00115"></a><span class="lineno"> 115</span> <span class="keywordtype">void</span> (*handler)(<span class="keywordtype">int</span>))</div>
<div class="line"><a id="l00116" name="l00116"></a><span class="lineno"> 116</span>{</div>
<div class="line"><a id="l00117" name="l00117"></a><span class="lineno"> 117</span> <span class="keywordflow">for</span> (<span class="keywordtype">int</span> idx = 0; idx < nr_signals; idx++) {</div>
<div class="line"><a id="l00118" name="l00118"></a><span class="lineno"> 118</span> <span class="keywordtype">int</span> signal = signals[idx];</div>
<div class="line"><a id="l00119" name="l00119"></a><span class="lineno"> 119</span> </div>
<div class="line"><a id="l00120" name="l00120"></a><span class="lineno"> 120</span> <span class="comment">/*</span></div>
<div class="line"><a id="l00121" name="l00121"></a><span class="lineno"> 121</span><span class="comment"> * If we used SIG_IGN instead of the do_nothing function,</span></div>
<div class="line"><a id="l00122" name="l00122"></a><span class="lineno"> 122</span><span class="comment"> * then we would be unable to tell if we set SIG_IGN (and</span></div>
<div class="line"><a id="l00123" name="l00123"></a><span class="lineno"> 123</span><span class="comment"> * thus should reset to SIG_DFL in fuse_remove_signal_handlers)</span></div>
<div class="line"><a id="l00124" name="l00124"></a><span class="lineno"> 124</span><span class="comment"> * or if it was already set to SIG_IGN (and should be left</span></div>
<div class="line"><a id="l00125" name="l00125"></a><span class="lineno"> 125</span><span class="comment"> * untouched.</span></div>
<div class="line"><a id="l00126" name="l00126"></a><span class="lineno"> 126</span><span class="comment"> */</span></div>
<div class="line"><a id="l00127" name="l00127"></a><span class="lineno"> 127</span> <span class="keywordflow">if</span> (set_one_signal_handler(signal, handler, 0) == -1) {</div>
<div class="line"><a id="l00128" name="l00128"></a><span class="lineno"> 128</span> <a class="code hl_function" href="fuse-3_817_81_8dir_2include_2fuse__log_8h.html#a4506ffd6ed3a631e01999b32b1eb8621">fuse_log</a>(FUSE_LOG_ERR,</div>
<div class="line"><a id="l00129" name="l00129"></a><span class="lineno"> 129</span> <span class="stringliteral">"Failed to install signal handler for sig %d\n"</span>,</div>
<div class="line"><a id="l00130" name="l00130"></a><span class="lineno"> 130</span> signal);</div>
<div class="line"><a id="l00131" name="l00131"></a><span class="lineno"> 131</span> <span class="keywordflow">return</span> -1;</div>
<div class="line"><a id="l00132" name="l00132"></a><span class="lineno"> 132</span> }</div>
<div class="line"><a id="l00133" name="l00133"></a><span class="lineno"> 133</span> }</div>
<div class="line"><a id="l00134" name="l00134"></a><span class="lineno"> 134</span> </div>
<div class="line"><a id="l00135" name="l00135"></a><span class="lineno"> 135</span> <span class="keywordflow">return</span> 0;</div>
<div class="line"><a id="l00136" name="l00136"></a><span class="lineno"> 136</span>}</div>
<div class="line"><a id="l00137" name="l00137"></a><span class="lineno"> 137</span> </div>
<div class="line"><a id="l00138" name="l00138"></a><span class="lineno"> 138</span><span class="keywordtype">int</span> <a class="code hl_function" href="fuse-3_817_81_8dir_2include_2fuse__common_8h.html#a292dccc3c7b1799cb054efa2ba0c774b">fuse_set_signal_handlers</a>(<span class="keyword">struct</span> fuse_session *se)</div>
<div class="line"><a id="l00139" name="l00139"></a><span class="lineno"> 139</span>{</div>
<div class="line"><a id="l00140" name="l00140"></a><span class="lineno"> 140</span> <span class="keywordtype">size_t</span> nr_signals;</div>
<div class="line"><a id="l00141" name="l00141"></a><span class="lineno"> 141</span> <span class="keywordtype">int</span> rc;</div>
<div class="line"><a id="l00142" name="l00142"></a><span class="lineno"> 142</span> </div>
<div class="line"><a id="l00143" name="l00143"></a><span class="lineno"> 143</span> nr_signals = <span class="keyword">sizeof</span>(teardown_sigs) / <span class="keyword">sizeof</span>(teardown_sigs[0]);</div>
<div class="line"><a id="l00144" name="l00144"></a><span class="lineno"> 144</span> rc = _fuse_set_signal_handlers(teardown_sigs, nr_signals, exit_handler);</div>
<div class="line"><a id="l00145" name="l00145"></a><span class="lineno"> 145</span> <span class="keywordflow">if</span> (rc < 0)</div>
<div class="line"><a id="l00146" name="l00146"></a><span class="lineno"> 146</span> <span class="keywordflow">return</span> rc;</div>
<div class="line"><a id="l00147" name="l00147"></a><span class="lineno"> 147</span> </div>
<div class="line"><a id="l00148" name="l00148"></a><span class="lineno"> 148</span> nr_signals = <span class="keyword">sizeof</span>(ignore_sigs) / <span class="keyword">sizeof</span>(ignore_sigs[0]);</div>
<div class="line"><a id="l00149" name="l00149"></a><span class="lineno"> 149</span> rc = _fuse_set_signal_handlers(ignore_sigs, nr_signals, do_nothing);</div>
<div class="line"><a id="l00150" name="l00150"></a><span class="lineno"> 150</span> <span class="keywordflow">if</span> (rc < 0)</div>
<div class="line"><a id="l00151" name="l00151"></a><span class="lineno"> 151</span> <span class="keywordflow">return</span> rc;</div>
<div class="line"><a id="l00152" name="l00152"></a><span class="lineno"> 152</span> </div>
<div class="line"><a id="l00153" name="l00153"></a><span class="lineno"> 153</span> <span class="comment">/*</span></div>
<div class="line"><a id="l00154" name="l00154"></a><span class="lineno"> 154</span><span class="comment"> * needs to be set independently if already set, as some applications</span></div>
<div class="line"><a id="l00155" name="l00155"></a><span class="lineno"> 155</span><span class="comment"> * may have multiple sessions and might rely on traditional behavior</span></div>
<div class="line"><a id="l00156" name="l00156"></a><span class="lineno"> 156</span><span class="comment"> * that the last session is used.</span></div>
<div class="line"><a id="l00157" name="l00157"></a><span class="lineno"> 157</span><span class="comment"> */</span></div>
<div class="line"><a id="l00158" name="l00158"></a><span class="lineno"> 158</span> fuse_instance = se;</div>
<div class="line"><a id="l00159" name="l00159"></a><span class="lineno"> 159</span> </div>
<div class="line"><a id="l00160" name="l00160"></a><span class="lineno"> 160</span> <span class="keywordflow">return</span> 0;</div>
<div class="line"><a id="l00161" name="l00161"></a><span class="lineno"> 161</span>}</div>
<div class="line"><a id="l00162" name="l00162"></a><span class="lineno"> 162</span> </div>
<div class="line"><a id="l00163" name="l00163"></a><span class="lineno"> 163</span><span class="keywordtype">int</span> <a class="code hl_function" href="fuse-3_817_81_8dir_2include_2fuse__common_8h.html#a15830cd29289a75894e21f6a3ff573fa">fuse_set_fail_signal_handlers</a>(<span class="keyword">struct</span> fuse_session *se)</div>
<div class="line"><a id="l00164" name="l00164"></a><span class="lineno"> 164</span>{</div>
<div class="line"><a id="l00165" name="l00165"></a><span class="lineno"> 165</span> <span class="keywordtype">size_t</span> nr_signals = <span class="keyword">sizeof</span>(fail_sigs) / <span class="keyword">sizeof</span>(fail_sigs[0]);</div>
<div class="line"><a id="l00166" name="l00166"></a><span class="lineno"> 166</span> </div>
<div class="line"><a id="l00167" name="l00167"></a><span class="lineno"> 167</span> <span class="keywordtype">int</span> rc = _fuse_set_signal_handlers(fail_sigs, nr_signals,</div>
<div class="line"><a id="l00168" name="l00168"></a><span class="lineno"> 168</span> exit_backtrace);</div>
<div class="line"><a id="l00169" name="l00169"></a><span class="lineno"> 169</span> <span class="keywordflow">if</span> (rc < 0)</div>
<div class="line"><a id="l00170" name="l00170"></a><span class="lineno"> 170</span> <span class="keywordflow">return</span> rc;</div>
<div class="line"><a id="l00171" name="l00171"></a><span class="lineno"> 171</span> </div>
<div class="line"><a id="l00172" name="l00172"></a><span class="lineno"> 172</span> <span class="comment">/* See fuse_set_signal_handlers, why set unconditionally */</span></div>
<div class="line"><a id="l00173" name="l00173"></a><span class="lineno"> 173</span> fuse_instance = se;</div>
<div class="line"><a id="l00174" name="l00174"></a><span class="lineno"> 174</span> </div>
<div class="line"><a id="l00175" name="l00175"></a><span class="lineno"> 175</span> <span class="keywordflow">return</span> 0;</div>
<div class="line"><a id="l00176" name="l00176"></a><span class="lineno"> 176</span>}</div>
<div class="line"><a id="l00177" name="l00177"></a><span class="lineno"> 177</span> </div>
<div class="line"><a id="l00178" name="l00178"></a><span class="lineno"> 178</span><span class="keyword">static</span> <span class="keywordtype">void</span> _fuse_remove_signal_handlers(<span class="keywordtype">int</span> signals[], <span class="keywordtype">int</span> nr_signals,</div>
<div class="line"><a id="l00179" name="l00179"></a><span class="lineno"> 179</span> <span class="keywordtype">void</span> (*handler)(<span class="keywordtype">int</span>))</div>
<div class="line"><a id="l00180" name="l00180"></a><span class="lineno"> 180</span>{</div>
<div class="line"><a id="l00181" name="l00181"></a><span class="lineno"> 181</span> <span class="keywordflow">for</span> (<span class="keywordtype">int</span> idx = 0; idx < nr_signals; idx++)</div>
<div class="line"><a id="l00182" name="l00182"></a><span class="lineno"> 182</span> set_one_signal_handler(signals[idx], handler, 1);</div>
<div class="line"><a id="l00183" name="l00183"></a><span class="lineno"> 183</span>}</div>
<div class="line"><a id="l00184" name="l00184"></a><span class="lineno"> 184</span> </div>
<div class="line"><a id="l00185" name="l00185"></a><span class="lineno"> 185</span><span class="keywordtype">void</span> <a class="code hl_function" href="fuse-3_817_81_8dir_2include_2fuse__common_8h.html#aeb674bbc11074c4fe520b952d6bfdd30">fuse_remove_signal_handlers</a>(<span class="keyword">struct</span> fuse_session *se)</div>
<div class="line"><a id="l00186" name="l00186"></a><span class="lineno"> 186</span>{</div>
<div class="line"><a id="l00187" name="l00187"></a><span class="lineno"> 187</span> <span class="keywordtype">size_t</span> nr_signals;</div>
<div class="line"><a id="l00188" name="l00188"></a><span class="lineno"> 188</span> </div>
<div class="line"><a id="l00189" name="l00189"></a><span class="lineno"> 189</span> <span class="keywordflow">if</span> (fuse_instance != se)</div>
<div class="line"><a id="l00190" name="l00190"></a><span class="lineno"> 190</span> <a class="code hl_function" href="fuse-3_817_81_8dir_2include_2fuse__log_8h.html#a4506ffd6ed3a631e01999b32b1eb8621">fuse_log</a>(FUSE_LOG_ERR,</div>
<div class="line"><a id="l00191" name="l00191"></a><span class="lineno"> 191</span> <span class="stringliteral">"fuse: fuse_remove_signal_handlers: unknown session\n"</span>);</div>
<div class="line"><a id="l00192" name="l00192"></a><span class="lineno"> 192</span> <span class="keywordflow">else</span></div>
<div class="line"><a id="l00193" name="l00193"></a><span class="lineno"> 193</span> fuse_instance = NULL;</div>
<div class="line"><a id="l00194" name="l00194"></a><span class="lineno"> 194</span> </div>
<div class="line"><a id="l00195" name="l00195"></a><span class="lineno"> 195</span> nr_signals = <span class="keyword">sizeof</span>(teardown_sigs) / <span class="keyword">sizeof</span>(teardown_sigs[0]);</div>
<div class="line"><a id="l00196" name="l00196"></a><span class="lineno"> 196</span> _fuse_remove_signal_handlers(teardown_sigs, nr_signals, exit_handler);</div>
<div class="line"><a id="l00197" name="l00197"></a><span class="lineno"> 197</span> </div>
<div class="line"><a id="l00198" name="l00198"></a><span class="lineno"> 198</span> nr_signals = <span class="keyword">sizeof</span>(ignore_sigs) / <span class="keyword">sizeof</span>(ignore_sigs[0]);</div>
<div class="line"><a id="l00199" name="l00199"></a><span class="lineno"> 199</span> _fuse_remove_signal_handlers(ignore_sigs, nr_signals, do_nothing);</div>
<div class="line"><a id="l00200" name="l00200"></a><span class="lineno"> 200</span> </div>
<div class="line"><a id="l00201" name="l00201"></a><span class="lineno"> 201</span> nr_signals = <span class="keyword">sizeof</span>(fail_sigs) / <span class="keyword">sizeof</span>(fail_sigs[0]);</div>
<div class="line"><a id="l00202" name="l00202"></a><span class="lineno"> 202</span> _fuse_remove_signal_handlers(fail_sigs, nr_signals, exit_backtrace);</div>
<div class="line"><a id="l00203" name="l00203"></a><span class="lineno"> 203</span>}</div>
<div class="ttc" id="afuse-3_817_81_8dir_2include_2fuse__common_8h_html_a15830cd29289a75894e21f6a3ff573fa"><div class="ttname"><a href="fuse-3_817_81_8dir_2include_2fuse__common_8h.html#a15830cd29289a75894e21f6a3ff573fa">fuse_set_fail_signal_handlers</a></div><div class="ttdeci">int fuse_set_fail_signal_handlers(struct fuse_session *se)</div><div class="ttdef"><b>Definition</b> <a href="fuse-3_817_81_8dir_2lib_2fuse__signals_8c_source.html#l00158">fuse_signals.c:158</a></div></div>
<div class="ttc" id="afuse-3_817_81_8dir_2include_2fuse__common_8h_html_a292dccc3c7b1799cb054efa2ba0c774b"><div class="ttname"><a href="fuse-3_817_81_8dir_2include_2fuse__common_8h.html#a292dccc3c7b1799cb054efa2ba0c774b">fuse_set_signal_handlers</a></div><div class="ttdeci">int fuse_set_signal_handlers(struct fuse_session *se)</div><div class="ttdef"><b>Definition</b> <a href="fuse-3_817_81_8dir_2lib_2fuse__signals_8c_source.html#l00138">fuse_signals.c:138</a></div></div>
<div class="ttc" id="afuse-3_817_81_8dir_2include_2fuse__common_8h_html_aeb674bbc11074c4fe520b952d6bfdd30"><div class="ttname"><a href="fuse-3_817_81_8dir_2include_2fuse__common_8h.html#aeb674bbc11074c4fe520b952d6bfdd30">fuse_remove_signal_handlers</a></div><div class="ttdeci">void fuse_remove_signal_handlers(struct fuse_session *se)</div><div class="ttdef"><b>Definition</b> <a href="fuse-3_817_81_8dir_2lib_2fuse__signals_8c_source.html#l00180">fuse_signals.c:180</a></div></div>
<div class="ttc" id="afuse-3_817_81_8dir_2include_2fuse__log_8h_html_a4506ffd6ed3a631e01999b32b1eb8621"><div class="ttname"><a href="fuse-3_817_81_8dir_2include_2fuse__log_8h.html#a4506ffd6ed3a631e01999b32b1eb8621">fuse_log</a></div><div class="ttdeci">void fuse_log(enum fuse_log_level level, const char *fmt,...)</div><div class="ttdef"><b>Definition</b> <a href="fuse-3_817_81_8dir_2lib_2fuse__log_8c_source.html#l00077">fuse_log.c:77</a></div></div>
<div class="ttc" id="afuse-3_817_81_8dir_2include_2fuse__lowlevel_8h_html_a198429f3fbc23ef29ef9971271827690"><div class="ttname"><a href="fuse-3_817_81_8dir_2include_2fuse__lowlevel_8h.html#a198429f3fbc23ef29ef9971271827690">fuse_session_exit</a></div><div class="ttdeci">void fuse_session_exit(struct fuse_session *se)</div></div>
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