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17<title>Debugging with GDB: unlink</title>
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70<a name="unlink-1"></a>
71<h4 class="unnumberedsubsubsec">unlink</h4>
72<a name="index-unlink_002c-file_002di_002fo-system-call"></a>
73
74<dl compact="compact">
75<dt>Synopsis:</dt>
76<dd><div class="smallexample">
77<pre class="smallexample">int unlink(const char *pathname);
78</pre></div>
79
80</dd>
81<dt>Request:</dt>
82<dd><p>&lsquo;<samp>Funlink,<var>pathnameptr</var>/<var>len</var></samp>&rsquo;
83</p>
84</dd>
85<dt>Return value:</dt>
86<dd><p>On success, zero is returned.  On error, -1 is returned.
87</p>
88</dd>
89<dt>Errors:</dt>
90<dd>
91<dl compact="compact">
92<dt><code>EACCES</code></dt>
93<dd><p>No access to the file or the path of the file.
94</p>
95</dd>
96<dt><code>EPERM</code></dt>
97<dd><p>The system does not allow unlinking of directories.
98</p>
99</dd>
100<dt><code>EBUSY</code></dt>
101<dd><p>The file <var>pathname</var> cannot be unlinked because it&rsquo;s
102being used by another process.
103</p>
104</dd>
105<dt><code>EFAULT</code></dt>
106<dd><p><var>pathnameptr</var> is an invalid pointer value.
107</p>
108</dd>
109<dt><code>ENAMETOOLONG</code></dt>
110<dd><p><var>pathname</var> was too long.
111</p>
112</dd>
113<dt><code>ENOENT</code></dt>
114<dd><p>A directory component in <var>pathname</var> does not exist.
115</p>
116</dd>
117<dt><code>ENOTDIR</code></dt>
118<dd><p>A component of the path is not a directory.
119</p>
120</dd>
121<dt><code>EROFS</code></dt>
122<dd><p>The file is on a read-only filesystem.
123</p>
124</dd>
125<dt><code>EINTR</code></dt>
126<dd><p>The call was interrupted by the user.
127</p></dd>
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