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<li class="navelem"><a class="el" href="dir_e28e5cafcb18af768fa0412f93bc207a.html">fuse-3.9.1</a></li><li class="navelem"><a class="el" href="dir_c7e7d7a3dfd09b28c05cdfc50399f9e1.html">lib</a></li> </ul>
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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"> FUSE: Filesystem in Userspace</span></div><div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"> Copyright (C) 2005-2008 Csaba Henk <csaba.henk@creo.hu></span></div><div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"></span></div><div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"> Architecture specific file system mounting (FreeBSD).</span></div><div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"></span></div><div class="line"><a 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 name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> See the file COPYING.LIB.</span></div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment">*/</span></div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span> </div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="preprocessor">#include "config.h"</span></div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="preprocessor">#include "fuse_i.h"</span></div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="preprocessor">#include "fuse_misc.h"</span></div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="preprocessor">#include "fuse_opt.h"</span></div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span> </div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="preprocessor">#include <sys/param.h></span></div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="preprocessor">#include <sys/mount.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">#include <sys/stat.h></span></div><div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="preprocessor">#include <sys/wait.h></span></div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="preprocessor">#include <sys/sysctl.h></span></div><div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="preprocessor">#include <sys/user.h></span></div><div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="preprocessor">#include <stdio.h></span></div><div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="preprocessor">#include <stdlib.h></span></div><div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="preprocessor">#include <unistd.h></span></div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="preprocessor">#include <stddef.h></span></div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="preprocessor">#include <fcntl.h></span></div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="preprocessor">#include <errno.h></span></div><div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="preprocessor">#include <string.h></span></div><div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="preprocessor">#include <paths.h></span></div><div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="preprocessor">#include <limits.h></span></div><div class="line"><a name="l00032"></a><span class="lineno"> 32</span> </div><div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="preprocessor">#define FUSERMOUNT_PROG "mount_fusefs"</span></div><div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="preprocessor">#define FUSE_DEV_TRUNK "/dev/fuse"</span></div><div class="line"><a name="l00035"></a><span class="lineno"> 35</span> </div><div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="keyword">enum</span> {</div><div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  KEY_RO,</div><div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  KEY_KERN</div><div class="line"><a name="l00039"></a><span class="lineno"> 39</span> };</div><div class="line"><a name="l00040"></a><span class="lineno"> 40</span> </div><div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="keyword">struct </span>mount_opts {</div><div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  <span class="keywordtype">int</span> allow_other;</div><div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  <span class="keywordtype">char</span> *kernel_opts;</div><div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  <span class="keywordtype">unsigned</span> max_read;</div><div class="line"><a name="l00045"></a><span class="lineno"> 45</span> };</div><div class="line"><a name="l00046"></a><span class="lineno"> 46</span> </div><div class="line"><a name="l00047"></a><span class="lineno"> 47</span> <span class="preprocessor">#define FUSE_DUAL_OPT_KEY(templ, key) \</span></div><div class="line"><a name="l00048"></a><span class="lineno"> 48</span> <span class="preprocessor"> FUSE_OPT_KEY(templ, key), FUSE_OPT_KEY("no" templ, key)</span></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">static</span> <span class="keyword">const</span> <span class="keyword">struct </span><a class="code" href="structfuse__opt.html">fuse_opt</a> fuse_mount_opts[] = {</div><div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  { <span class="stringliteral">"allow_other"</span>, offsetof(<span class="keyword">struct</span> mount_opts, allow_other), 1 },</div><div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  { <span class="stringliteral">"max_read=%u"</span>, offsetof(<span class="keyword">struct</span> mount_opts, max_read), 1 },</div><div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  <a class="code" href="fuse-3_88_80_2include_2fuse__opt_8h.html#a371d830a8aedd9e3f96d9bb31876a8f1">FUSE_OPT_KEY</a>(<span class="stringliteral">"-r"</span>, KEY_RO),</div><div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <span class="comment">/* standard FreeBSD mount options */</span></div><div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  FUSE_DUAL_OPT_KEY(<span class="stringliteral">"dev"</span>, KEY_KERN),</div><div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  FUSE_DUAL_OPT_KEY(<span class="stringliteral">"async"</span>, KEY_KERN),</div><div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  FUSE_DUAL_OPT_KEY(<span class="stringliteral">"atime"</span>, KEY_KERN),</div><div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  FUSE_DUAL_OPT_KEY(<span class="stringliteral">"dev"</span>, KEY_KERN),</div><div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  FUSE_DUAL_OPT_KEY(<span class="stringliteral">"exec"</span>, KEY_KERN),</div><div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  FUSE_DUAL_OPT_KEY(<span class="stringliteral">"suid"</span>, KEY_KERN),</div><div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  FUSE_DUAL_OPT_KEY(<span class="stringliteral">"symfollow"</span>, KEY_KERN),</div><div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  FUSE_DUAL_OPT_KEY(<span class="stringliteral">"rdonly"</span>, KEY_KERN),</div><div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  FUSE_DUAL_OPT_KEY(<span class="stringliteral">"sync"</span>, KEY_KERN),</div><div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  FUSE_DUAL_OPT_KEY(<span class="stringliteral">"union"</span>, KEY_KERN),</div><div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  FUSE_DUAL_OPT_KEY(<span class="stringliteral">"userquota"</span>, KEY_KERN),</div><div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  FUSE_DUAL_OPT_KEY(<span class="stringliteral">"groupquota"</span>, KEY_KERN),</div><div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  FUSE_DUAL_OPT_KEY(<span class="stringliteral">"clusterr"</span>, KEY_KERN),</div><div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  FUSE_DUAL_OPT_KEY(<span class="stringliteral">"clusterw"</span>, KEY_KERN),</div><div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  FUSE_DUAL_OPT_KEY(<span class="stringliteral">"suiddir"</span>, KEY_KERN),</div><div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  FUSE_DUAL_OPT_KEY(<span class="stringliteral">"snapshot"</span>, KEY_KERN),</div><div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  FUSE_DUAL_OPT_KEY(<span class="stringliteral">"multilabel"</span>, KEY_KERN),</div><div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  FUSE_DUAL_OPT_KEY(<span class="stringliteral">"acls"</span>, KEY_KERN),</div><div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  FUSE_DUAL_OPT_KEY(<span class="stringliteral">"force"</span>, KEY_KERN),</div><div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  FUSE_DUAL_OPT_KEY(<span class="stringliteral">"update"</span>, KEY_KERN),</div><div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  FUSE_DUAL_OPT_KEY(<span class="stringliteral">"ro"</span>, KEY_KERN),</div><div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  FUSE_DUAL_OPT_KEY(<span class="stringliteral">"rw"</span>, KEY_KERN),</div><div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  FUSE_DUAL_OPT_KEY(<span class="stringliteral">"auto"</span>, KEY_KERN),</div><div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  FUSE_DUAL_OPT_KEY(<span class="stringliteral">"automounted"</span>, KEY_KERN),</div><div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  <span class="comment">/* options supported under both Linux and FBSD */</span></div><div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  FUSE_DUAL_OPT_KEY(<span class="stringliteral">"allow_other"</span>, KEY_KERN),</div><div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  FUSE_DUAL_OPT_KEY(<span class="stringliteral">"default_permissions"</span>,KEY_KERN),</div><div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  <a class="code" href="fuse-3_88_80_2include_2fuse__opt_8h.html#a371d830a8aedd9e3f96d9bb31876a8f1">FUSE_OPT_KEY</a>(<span class="stringliteral">"max_read="</span>, KEY_KERN),</div><div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  <a class="code" href="fuse-3_88_80_2include_2fuse__opt_8h.html#a371d830a8aedd9e3f96d9bb31876a8f1">FUSE_OPT_KEY</a>(<span class="stringliteral">"subtype="</span>, KEY_KERN),</div><div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  <span class="comment">/* FBSD FUSE specific mount options */</span></div><div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  FUSE_DUAL_OPT_KEY(<span class="stringliteral">"private"</span>, KEY_KERN),</div><div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  FUSE_DUAL_OPT_KEY(<span class="stringliteral">"neglect_shares"</span>, KEY_KERN),</div><div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  FUSE_DUAL_OPT_KEY(<span class="stringliteral">"push_symlinks_in"</span>, KEY_KERN),</div><div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  <a class="code" href="fuse-3_88_80_2include_2fuse__opt_8h.html#a371d830a8aedd9e3f96d9bb31876a8f1">FUSE_OPT_KEY</a>(<span class="stringliteral">"nosync_unmount"</span>, KEY_KERN),</div><div class="line"><a name="l00089"></a><span class="lineno"> 89</span> <span class="preprocessor">#if __FreeBSD_version >= 1200519</span></div><div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  FUSE_DUAL_OPT_KEY(<span class="stringliteral">"intr"</span>, KEY_KERN),</div><div class="line"><a name="l00091"></a><span class="lineno"> 91</span> <span class="preprocessor">#endif</span></div><div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  <span class="comment">/* stock FBSD mountopt parsing routine lets anything be negated... */</span></div><div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <span class="comment">/*</span></div><div class="line"><a name="l00094"></a><span class="lineno"> 94</span> <span class="comment"> * Linux specific mount options, but let just the mount util</span></div><div class="line"><a name="l00095"></a><span class="lineno"> 95</span> <span class="comment"> * handle them</span></div><div class="line"><a name="l00096"></a><span class="lineno"> 96</span> <span class="comment"> */</span></div><div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  <a class="code" href="fuse-3_88_80_2include_2fuse__opt_8h.html#a371d830a8aedd9e3f96d9bb31876a8f1">FUSE_OPT_KEY</a>(<span class="stringliteral">"fsname="</span>, KEY_KERN),</div><div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  <a class="code" href="fuse-3_88_80_2include_2fuse__opt_8h.html#aca35962e17d189ceb5447f8eea11bd33">FUSE_OPT_END</a></div><div class="line"><a name="l00099"></a><span class="lineno"> 99</span> };</div><div class="line"><a name="l00100"></a><span class="lineno"> 100</span> </div><div class="line"><a name="l00101"></a><span class="lineno"> 101</span> <span class="keywordtype">void</span> fuse_mount_version(<span class="keywordtype">void</span>)</div><div class="line"><a name="l00102"></a><span class="lineno"> 102</span> {</div><div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  system(FUSERMOUNT_PROG <span class="stringliteral">" --version"</span>);</div><div class="line"><a name="l00104"></a><span class="lineno"> 104</span> }</div><div class="line"><a name="l00105"></a><span class="lineno"> 105</span> </div><div class="line"><a name="l00106"></a><span class="lineno"> 106</span> <span class="keywordtype">unsigned</span> get_max_read(<span class="keyword">struct</span> mount_opts *o)</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="keywordflow">return</span> o->max_read;</div><div class="line"><a name="l00109"></a><span class="lineno"> 109</span> }</div><div class="line"><a name="l00110"></a><span class="lineno"> 110</span> </div><div class="line"><a name="l00111"></a><span class="lineno"> 111</span> <span class="keyword">static</span> <span class="keywordtype">int</span> fuse_mount_opt_proc(<span class="keywordtype">void</span> *data, <span class="keyword">const</span> <span class="keywordtype">char</span> *arg, <span class="keywordtype">int</span> key,</div><div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  <span class="keyword">struct</span> <a class="code" href="structfuse__args.html">fuse_args</a> *outargs)</div><div class="line"><a name="l00113"></a><span class="lineno"> 113</span> {</div><div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  (void) outargs;</div><div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  <span class="keyword">struct </span>mount_opts *mo = data;</div><div class="line"><a name="l00116"></a><span class="lineno"> 116</span> </div><div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  <span class="keywordflow">switch</span> (key) {</div><div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  <span class="keywordflow">case</span> KEY_RO:</div><div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  arg = <span class="stringliteral">"ro"</span>;</div><div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  <span class="comment">/* fall through */</span></div><div class="line"><a name="l00121"></a><span class="lineno"> 121</span> </div><div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  <span class="keywordflow">case</span> KEY_KERN:</div><div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  <span class="keywordflow">return</span> <a class="code" href="fuse-3_88_80_2include_2fuse__opt_8h.html#aaae525d5e959c5394bc323be0c1d02b0">fuse_opt_add_opt</a>(&mo->kernel_opts, arg);</div><div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  }</div><div class="line"><a name="l00125"></a><span class="lineno"> 125</span> </div><div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  <span class="comment">/* Pass through unknown options */</span></div><div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  <span class="keywordflow">return</span> 1;</div><div class="line"><a name="l00128"></a><span class="lineno"> 128</span> }</div><div class="line"><a name="l00129"></a><span class="lineno"> 129</span> </div><div class="line"><a name="l00130"></a><span class="lineno"> 130</span> <span class="keywordtype">void</span> fuse_kern_unmount(<span class="keyword">const</span> <span class="keywordtype">char</span> *mountpoint, <span class="keywordtype">int</span> fd)</div><div class="line"><a name="l00131"></a><span class="lineno"> 131</span> {</div><div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  close(fd);</div><div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  unmount(mountpoint, MNT_FORCE);</div><div class="line"><a name="l00134"></a><span class="lineno"> 134</span> }</div><div class="line"><a name="l00135"></a><span class="lineno"> 135</span> </div><div class="line"><a name="l00136"></a><span class="lineno"> 136</span> <span class="comment">/* Check if kernel is doing init in background */</span></div><div class="line"><a name="l00137"></a><span class="lineno"> 137</span> <span class="keyword">static</span> <span class="keywordtype">int</span> init_backgrounded(<span class="keywordtype">void</span>)</div><div class="line"><a name="l00138"></a><span class="lineno"> 138</span> {</div><div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  <span class="keywordtype">unsigned</span> ibg;</div><div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  <span class="keywordtype">size_t</span> len;</div><div class="line"><a name="l00141"></a><span class="lineno"> 141</span> </div><div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  len = <span class="keyword">sizeof</span>(ibg);</div><div class="line"><a name="l00143"></a><span class="lineno"> 143</span> </div><div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  <span class="keywordflow">if</span> (sysctlbyname(<span class="stringliteral">"vfs.fuse.init_backgrounded"</span>, &ibg, &len, NULL, 0))</div><div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  <span class="keywordflow">return</span> 0;</div><div class="line"><a name="l00146"></a><span class="lineno"> 146</span> </div><div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  <span class="keywordflow">return</span> ibg;</div><div class="line"><a name="l00148"></a><span class="lineno"> 148</span> }</div><div class="line"><a name="l00149"></a><span class="lineno"> 149</span> </div><div class="line"><a name="l00150"></a><span class="lineno"> 150</span> </div><div class="line"><a name="l00151"></a><span class="lineno"> 151</span> <span class="keyword">static</span> <span class="keywordtype">int</span> fuse_mount_core(<span class="keyword">const</span> <span class="keywordtype">char</span> *mountpoint, <span class="keyword">const</span> <span class="keywordtype">char</span> *opts)</div><div class="line"><a name="l00152"></a><span class="lineno"> 152</span> {</div><div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  <span class="keyword">const</span> <span class="keywordtype">char</span> *mountprog = FUSERMOUNT_PROG;</div><div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  <span class="keywordtype">int</span> fd;</div><div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  <span class="keywordtype">char</span> *fdnam, *dev;</div><div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  pid_t pid, cpid;</div><div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  <span class="keywordtype">int</span> status;</div><div class="line"><a name="l00158"></a><span class="lineno"> 158</span> </div><div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  fdnam = getenv(<span class="stringliteral">"FUSE_DEV_FD"</span>);</div><div class="line"><a name="l00160"></a><span class="lineno"> 160</span> </div><div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  <span class="keywordflow">if</span> (fdnam) {</div><div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  <span class="keywordtype">char</span> *ep;</div><div class="line"><a name="l00163"></a><span class="lineno"> 163</span> </div><div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  fd = strtol(fdnam, &ep, 10);</div><div class="line"><a name="l00165"></a><span class="lineno"> 165</span> </div><div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  <span class="keywordflow">if</span> (*ep != <span class="charliteral">'\0'</span>) {</div><div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  <a class="code" href="fuse-3_88_80_2include_2fuse__log_8h.html#a4506ffd6ed3a631e01999b32b1eb8621">fuse_log</a>(FUSE_LOG_ERR, <span class="stringliteral">"invalid value given in FUSE_DEV_FD\n"</span>);</div><div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  <span class="keywordflow">return</span> -1;</div><div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  }</div><div class="line"><a name="l00170"></a><span class="lineno"> 170</span> </div><div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  <span class="keywordflow">if</span> (fd < 0)</div><div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  <span class="keywordflow">return</span> -1;</div><div class="line"><a name="l00173"></a><span class="lineno"> 173</span> </div><div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  <span class="keywordflow">goto</span> mount;</div><div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  }</div><div class="line"><a name="l00176"></a><span class="lineno"> 176</span> </div><div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  dev = getenv(<span class="stringliteral">"FUSE_DEV_NAME"</span>);</div><div class="line"><a name="l00178"></a><span class="lineno"> 178</span> </div><div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  <span class="keywordflow">if</span> (! dev)</div><div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  dev = (<span class="keywordtype">char</span> *)FUSE_DEV_TRUNK;</div><div class="line"><a name="l00181"></a><span class="lineno"> 181</span> </div><div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  <span class="keywordflow">if</span> ((fd = open(dev, O_RDWR)) < 0) {</div><div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  perror(<span class="stringliteral">"fuse: failed to open fuse device"</span>);</div><div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  <span class="keywordflow">return</span> -1;</div><div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  }</div><div class="line"><a name="l00186"></a><span class="lineno"> 186</span> </div><div class="line"><a name="l00187"></a><span class="lineno"> 187</span> mount:</div><div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  <span class="keywordflow">if</span> (getenv(<span class="stringliteral">"FUSE_NO_MOUNT"</span>) || ! mountpoint)</div><div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  <span class="keywordflow">goto</span> out;</div><div class="line"><a name="l00190"></a><span class="lineno"> 190</span> </div><div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  pid = fork();</div><div class="line"><a name="l00192"></a><span class="lineno"> 192</span>  cpid = pid;</div><div class="line"><a name="l00193"></a><span class="lineno"> 193</span> </div><div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  <span class="keywordflow">if</span> (pid == -1) {</div><div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  perror(<span class="stringliteral">"fuse: fork() failed"</span>);</div><div class="line"><a name="l00196"></a><span class="lineno"> 196</span>  close(fd);</div><div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  <span class="keywordflow">return</span> -1;</div><div class="line"><a name="l00198"></a><span class="lineno"> 198</span>  }</div><div class="line"><a name="l00199"></a><span class="lineno"> 199</span> </div><div class="line"><a name="l00200"></a><span class="lineno"> 200</span>  <span class="keywordflow">if</span> (pid == 0) {</div><div class="line"><a name="l00201"></a><span class="lineno"> 201</span>  <span class="keywordflow">if</span> (! init_backgrounded()) {</div><div class="line"><a name="l00202"></a><span class="lineno"> 202</span>  <span class="comment">/*</span></div><div class="line"><a name="l00203"></a><span class="lineno"> 203</span> <span class="comment"> * If init is not backgrounded, we have to</span></div><div class="line"><a name="l00204"></a><span class="lineno"> 204</span> <span class="comment"> * call the mount util backgrounded, to avoid</span></div><div class="line"><a name="l00205"></a><span class="lineno"> 205</span> <span class="comment"> * deadlock.</span></div><div class="line"><a name="l00206"></a><span class="lineno"> 206</span> <span class="comment"> */</span></div><div class="line"><a name="l00207"></a><span class="lineno"> 207</span> </div><div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  pid = fork();</div><div class="line"><a name="l00209"></a><span class="lineno"> 209</span> </div><div class="line"><a name="l00210"></a><span class="lineno"> 210</span>  <span class="keywordflow">if</span> (pid == -1) {</div><div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  perror(<span class="stringliteral">"fuse: fork() failed"</span>);</div><div class="line"><a name="l00212"></a><span class="lineno"> 212</span>  close(fd);</div><div class="line"><a name="l00213"></a><span class="lineno"> 213</span>  exit(1);</div><div class="line"><a name="l00214"></a><span class="lineno"> 214</span>  }</div><div class="line"><a name="l00215"></a><span class="lineno"> 215</span>  }</div><div class="line"><a name="l00216"></a><span class="lineno"> 216</span> </div><div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  <span class="keywordflow">if</span> (pid == 0) {</div><div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  <span class="keyword">const</span> <span class="keywordtype">char</span> *argv[32];</div><div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  <span class="keywordtype">int</span> a = 0;</div><div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  <span class="keywordtype">int</span> ret = -1; </div><div class="line"><a name="l00221"></a><span class="lineno"> 221</span>  </div><div class="line"><a name="l00222"></a><span class="lineno"> 222</span>  <span class="keywordflow">if</span> (! fdnam)</div><div class="line"><a name="l00223"></a><span class="lineno"> 223</span>  {</div><div class="line"><a name="l00224"></a><span class="lineno"> 224</span>  ret = asprintf(&fdnam, <span class="stringliteral">"%d"</span>, fd); </div><div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  <span class="keywordflow">if</span>(ret == -1)</div><div class="line"><a name="l00226"></a><span class="lineno"> 226</span>  {</div><div class="line"><a name="l00227"></a><span class="lineno"> 227</span>  perror(<span class="stringliteral">"fuse: failed to assemble mount arguments"</span>);</div><div class="line"><a name="l00228"></a><span class="lineno"> 228</span>  close(fd);</div><div class="line"><a name="l00229"></a><span class="lineno"> 229</span>  exit(1);</div><div class="line"><a name="l00230"></a><span class="lineno"> 230</span>  }</div><div class="line"><a name="l00231"></a><span class="lineno"> 231</span>  }</div><div class="line"><a name="l00232"></a><span class="lineno"> 232</span> </div><div class="line"><a name="l00233"></a><span class="lineno"> 233</span>  argv[a++] = mountprog;</div><div class="line"><a name="l00234"></a><span class="lineno"> 234</span>  <span class="keywordflow">if</span> (opts) {</div><div class="line"><a name="l00235"></a><span class="lineno"> 235</span>  argv[a++] = <span class="stringliteral">"-o"</span>;</div><div class="line"><a name="l00236"></a><span class="lineno"> 236</span>  argv[a++] = opts;</div><div class="line"><a name="l00237"></a><span class="lineno"> 237</span>  }</div><div class="line"><a name="l00238"></a><span class="lineno"> 238</span>  argv[a++] = fdnam;</div><div class="line"><a name="l00239"></a><span class="lineno"> 239</span>  argv[a++] = mountpoint;</div><div class="line"><a name="l00240"></a><span class="lineno"> 240</span>  argv[a++] = NULL;</div><div class="line"><a name="l00241"></a><span class="lineno"> 241</span>  execvp(mountprog, (<span class="keywordtype">char</span> **) argv);</div><div class="line"><a name="l00242"></a><span class="lineno"> 242</span>  perror(<span class="stringliteral">"fuse: failed to exec mount program"</span>);</div><div class="line"><a name="l00243"></a><span class="lineno"> 243</span>  free(fdnam);</div><div class="line"><a name="l00244"></a><span class="lineno"> 244</span>  exit(1);</div><div class="line"><a name="l00245"></a><span class="lineno"> 245</span>  }</div><div class="line"><a name="l00246"></a><span class="lineno"> 246</span> </div><div class="line"><a name="l00247"></a><span class="lineno"> 247</span>  exit(0);</div><div class="line"><a name="l00248"></a><span class="lineno"> 248</span>  }</div><div class="line"><a name="l00249"></a><span class="lineno"> 249</span> </div><div class="line"><a name="l00250"></a><span class="lineno"> 250</span>  <span class="keywordflow">if</span> (waitpid(cpid, &status, 0) == -1 || WEXITSTATUS(status) != 0) {</div><div class="line"><a name="l00251"></a><span class="lineno"> 251</span>  perror(<span class="stringliteral">"fuse: failed to mount file system"</span>);</div><div class="line"><a name="l00252"></a><span class="lineno"> 252</span>  close(fd);</div><div class="line"><a name="l00253"></a><span class="lineno"> 253</span>  <span class="keywordflow">return</span> -1;</div><div class="line"><a name="l00254"></a><span class="lineno"> 254</span>  }</div><div class="line"><a name="l00255"></a><span class="lineno"> 255</span> </div><div class="line"><a name="l00256"></a><span class="lineno"> 256</span> out:</div><div class="line"><a name="l00257"></a><span class="lineno"> 257</span>  <span class="keywordflow">return</span> fd;</div><div class="line"><a name="l00258"></a><span class="lineno"> 258</span> }</div><div class="line"><a name="l00259"></a><span class="lineno"> 259</span> </div><div class="line"><a name="l00260"></a><span class="lineno"> 260</span> <span class="keyword">struct </span>mount_opts *parse_mount_opts(<span class="keyword">struct</span> <a class="code" href="structfuse__args.html">fuse_args</a> *args)</div><div class="line"><a name="l00261"></a><span class="lineno"> 261</span> {</div><div class="line"><a name="l00262"></a><span class="lineno"> 262</span>  <span class="keyword">struct </span>mount_opts *mo;</div><div class="line"><a name="l00263"></a><span class="lineno"> 263</span> </div><div class="line"><a name="l00264"></a><span class="lineno"> 264</span>  mo = (<span class="keyword">struct </span>mount_opts*) malloc(<span class="keyword">sizeof</span>(<span class="keyword">struct</span> mount_opts));</div><div class="line"><a name="l00265"></a><span class="lineno"> 265</span>  <span class="keywordflow">if</span> (mo == NULL)</div><div class="line"><a name="l00266"></a><span class="lineno"> 266</span>  <span class="keywordflow">return</span> NULL;</div><div class="line"><a name="l00267"></a><span class="lineno"> 267</span> </div><div class="line"><a name="l00268"></a><span class="lineno"> 268</span>  memset(mo, 0, <span class="keyword">sizeof</span>(<span class="keyword">struct</span> mount_opts));</div><div class="line"><a name="l00269"></a><span class="lineno"> 269</span> </div><div class="line"><a name="l00270"></a><span class="lineno"> 270</span>  <span class="keywordflow">if</span> (args &&</div><div class="line"><a name="l00271"></a><span class="lineno"> 271</span>  <a class="code" href="fuse-3_88_80_2include_2fuse__opt_8h.html#a539ef1f571c34f516c60c4cbe2901c0e">fuse_opt_parse</a>(args, mo, fuse_mount_opts, fuse_mount_opt_proc) == -1)</div><div class="line"><a name="l00272"></a><span class="lineno"> 272</span>  <span class="keywordflow">goto</span> err_out;</div><div class="line"><a name="l00273"></a><span class="lineno"> 273</span> </div><div class="line"><a name="l00274"></a><span class="lineno"> 274</span>  <span class="keywordflow">return</span> mo;</div><div class="line"><a name="l00275"></a><span class="lineno"> 275</span> </div><div class="line"><a name="l00276"></a><span class="lineno"> 276</span> err_out:</div><div class="line"><a name="l00277"></a><span class="lineno"> 277</span>  destroy_mount_opts(mo);</div><div class="line"><a name="l00278"></a><span class="lineno"> 278</span>  <span class="keywordflow">return</span> NULL;</div><div class="line"><a name="l00279"></a><span class="lineno"> 279</span> }</div><div class="line"><a name="l00280"></a><span class="lineno"> 280</span> </div><div class="line"><a name="l00281"></a><span class="lineno"> 281</span> <span class="keywordtype">void</span> destroy_mount_opts(<span class="keyword">struct</span> mount_opts *mo)</div><div class="line"><a name="l00282"></a><span class="lineno"> 282</span> {</div><div class="line"><a name="l00283"></a><span class="lineno"> 283</span>  free(mo->kernel_opts);</div><div class="line"><a name="l00284"></a><span class="lineno"> 284</span>  free(mo);</div><div class="line"><a name="l00285"></a><span class="lineno"> 285</span> }</div><div class="line"><a name="l00286"></a><span class="lineno"> 286</span> </div><div class="line"><a name="l00287"></a><span class="lineno"> 287</span> <span class="keywordtype">int</span> fuse_kern_mount(<span class="keyword">const</span> <span class="keywordtype">char</span> *mountpoint, <span class="keyword">struct</span> mount_opts *mo)</div><div class="line"><a name="l00288"></a><span class="lineno"> 288</span> {</div><div class="line"><a name="l00289"></a><span class="lineno"> 289</span>  <span class="comment">/* mount util should not try to spawn the daemon */</span></div><div class="line"><a name="l00290"></a><span class="lineno"> 290</span>  setenv(<span class="stringliteral">"MOUNT_FUSEFS_SAFE"</span>, <span class="stringliteral">"1"</span>, 1);</div><div class="line"><a name="l00291"></a><span class="lineno"> 291</span>  <span class="comment">/* to notify the mount util it's called from lib */</span></div><div class="line"><a name="l00292"></a><span class="lineno"> 292</span>  setenv(<span class="stringliteral">"MOUNT_FUSEFS_CALL_BY_LIB"</span>, <span class="stringliteral">"1"</span>, 1);</div><div class="line"><a name="l00293"></a><span class="lineno"> 293</span> </div><div class="line"><a name="l00294"></a><span class="lineno"> 294</span>  <span class="keywordflow">return</span> fuse_mount_core(mountpoint, mo->kernel_opts);</div><div class="line"><a name="l00295"></a><span class="lineno"> 295</span> }</div><div class="ttc" id="fuse-3_88_80_2include_2fuse__opt_8h_html_a539ef1f571c34f516c60c4cbe2901c0e"><div class="ttname"><a href="fuse-3_88_80_2include_2fuse__opt_8h.html#a539ef1f571c34f516c60c4cbe2901c0e">fuse_opt_parse</a></div><div class="ttdeci">int fuse_opt_parse(struct fuse_args *args, void *data, const struct fuse_opt opts[], fuse_opt_proc_t proc)</div><div class="ttdef"><b>Definition:</b> <a href="fuse-3_88_80_2lib_2fuse__opt_8c_source.html#l00398">fuse_opt.c:398</a></div></div>
<div class="ttc" id="fuse-3_88_80_2include_2fuse__opt_8h_html_aaae525d5e959c5394bc323be0c1d02b0"><div class="ttname"><a href="fuse-3_88_80_2include_2fuse__opt_8h.html#aaae525d5e959c5394bc323be0c1d02b0">fuse_opt_add_opt</a></div><div class="ttdeci">int fuse_opt_add_opt(char **opts, const char *opt)</div><div class="ttdef"><b>Definition:</b> <a href="fuse-3_88_80_2lib_2fuse__opt_8c_source.html#l00139">fuse_opt.c:139</a></div></div>
<div class="ttc" id="fuse-3_88_80_2include_2fuse__opt_8h_html_aca35962e17d189ceb5447f8eea11bd33"><div class="ttname"><a href="fuse-3_88_80_2include_2fuse__opt_8h.html#aca35962e17d189ceb5447f8eea11bd33">FUSE_OPT_END</a></div><div class="ttdeci">#define FUSE_OPT_END</div><div class="ttdef"><b>Definition:</b> <a href="fuse-3_88_80_2include_2fuse__opt_8h_source.html#l00104">fuse_opt.h:104</a></div></div>
<div class="ttc" id="fuse-3_88_80_2include_2fuse__opt_8h_html_a371d830a8aedd9e3f96d9bb31876a8f1"><div class="ttname"><a href="fuse-3_88_80_2include_2fuse__opt_8h.html#a371d830a8aedd9e3f96d9bb31876a8f1">FUSE_OPT_KEY</a></div><div class="ttdeci">#define FUSE_OPT_KEY(templ, key)</div><div class="ttdef"><b>Definition:</b> <a href="fuse-3_88_80_2include_2fuse__opt_8h_source.html#l00098">fuse_opt.h:98</a></div></div>
<div class="ttc" id="structfuse__opt_html"><div class="ttname"><a href="structfuse__opt.html">fuse_opt</a></div><div class="ttdef"><b>Definition:</b> <a href="fuse-3_88_80_2include_2fuse__opt_8h_source.html#l00077">fuse_opt.h:77</a></div></div>
<div class="ttc" id="structfuse__args_html"><div class="ttname"><a href="structfuse__args.html">fuse_args</a></div><div class="ttdef"><b>Definition:</b> <a href="fuse-3_88_80_2include_2fuse__opt_8h_source.html#l00109">fuse_opt.h:109</a></div></div>
<div class="ttc" id="fuse-3_88_80_2include_2fuse__log_8h_html_a4506ffd6ed3a631e01999b32b1eb8621"><div class="ttname"><a href="fuse-3_88_80_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_88_80_2lib_2fuse__log_8c_source.html#l00033">fuse_log.c:33</a></div></div>
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