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<h1>file/src/fsmagic.c</h1><a href="fsmagic_8c.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*</span>
<a name="l00002"></a>00002 <span class="comment"> * Copyright (c) Ian F. Darwin 1986-1995.</span>
<a name="l00003"></a>00003 <span class="comment"> * Software written by Ian F. Darwin and others;</span>
<a name="l00004"></a>00004 <span class="comment"> * maintained 1995-present by Christos Zoulas and others.</span>
<a name="l00005"></a>00005 <span class="comment"> * </span>
<a name="l00006"></a>00006 <span class="comment"> * Redistribution and use in source and binary forms, with or without</span>
<a name="l00007"></a>00007 <span class="comment"> * modification, are permitted provided that the following conditions</span>
<a name="l00008"></a>00008 <span class="comment"> * are met:</span>
<a name="l00009"></a>00009 <span class="comment"> * 1. Redistributions of source code must retain the above copyright</span>
<a name="l00010"></a>00010 <span class="comment"> * notice immediately at the beginning of the file, without modification,</span>
<a name="l00011"></a>00011 <span class="comment"> * this list of conditions, and the following disclaimer.</span>
<a name="l00012"></a>00012 <span class="comment"> * 2. Redistributions in binary form must reproduce the above copyright</span>
<a name="l00013"></a>00013 <span class="comment"> * notice, this list of conditions and the following disclaimer in the</span>
<a name="l00014"></a>00014 <span class="comment"> * documentation and/or other materials provided with the distribution.</span>
<a name="l00015"></a>00015 <span class="comment"> * </span>
<a name="l00016"></a>00016 <span class="comment"> * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND</span>
<a name="l00017"></a>00017 <span class="comment"> * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE</span>
<a name="l00018"></a>00018 <span class="comment"> * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE</span>
<a name="l00019"></a>00019 <span class="comment"> * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR</span>
<a name="l00020"></a>00020 <span class="comment"> * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL</span>
<a name="l00021"></a>00021 <span class="comment"> * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS</span>
<a name="l00022"></a>00022 <span class="comment"> * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)</span>
<a name="l00023"></a>00023 <span class="comment"> * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT</span>
<a name="l00024"></a>00024 <span class="comment"> * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY</span>
<a name="l00025"></a>00025 <span class="comment"> * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF</span>
<a name="l00026"></a>00026 <span class="comment"> * SUCH DAMAGE.</span>
<a name="l00027"></a>00027 <span class="comment"> */</span>
<a name="l00028"></a>00028 <span class="comment">/*</span>
<a name="l00029"></a>00029 <span class="comment"> * fsmagic - magic based on filesystem info - directory, special files, etc.</span>
<a name="l00030"></a>00030 <span class="comment"> */</span>
<a name="l00031"></a>00031
<a name="l00032"></a>00032 <span class="preprocessor">#include "<a class="code" href="file_8h.html">file.h</a>"</span>
<a name="l00033"></a>00033 <span class="preprocessor">#include "magic.h"</span>
<a name="l00034"></a>00034 <span class="preprocessor">#include <string.h></span>
<a name="l00035"></a>00035 <span class="preprocessor">#ifdef HAVE_UNISTD_H</span>
<a name="l00036"></a>00036 <span class="preprocessor"></span><span class="preprocessor">#include <unistd.h></span>
<a name="l00037"></a>00037 <span class="preprocessor">#endif</span>
<a name="l00038"></a>00038 <span class="preprocessor"></span><span class="preprocessor">#include <stdlib.h></span>
<a name="l00039"></a>00039 <span class="preprocessor">#include <sys/stat.h></span>
<a name="l00040"></a>00040 <span class="comment">/* Since major is a function on SVR4, we cannot use `ifndef major'. */</span>
<a name="l00041"></a>00041 <span class="preprocessor">#ifdef MAJOR_IN_MKDEV</span>
<a name="l00042"></a>00042 <span class="preprocessor"></span><span class="preprocessor"># include <sys/mkdev.h></span>
<a name="l00043"></a>00043 <span class="preprocessor"># define HAVE_MAJOR</span>
<a name="l00044"></a>00044 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
<a name="l00045"></a>00045 <span class="preprocessor"></span><span class="preprocessor">#ifdef MAJOR_IN_SYSMACROS</span>
<a name="l00046"></a>00046 <span class="preprocessor"></span><span class="preprocessor"># include <sys/sysmacros.h></span>
<a name="l00047"></a>00047 <span class="preprocessor"># define HAVE_MAJOR</span>
<a name="l00048"></a>00048 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
<a name="l00049"></a>00049 <span class="preprocessor"></span><span class="preprocessor">#ifdef major </span><span class="comment">/* Might be defined in sys/types.h. */</span>
<a name="l00050"></a>00050 <span class="preprocessor"># define HAVE_MAJOR</span>
<a name="l00051"></a>00051 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
<a name="l00052"></a>00052 <span class="preprocessor"></span>
<a name="l00053"></a>00053 <span class="preprocessor">#ifndef HAVE_MAJOR</span>
<a name="l00054"></a><a class="code" href="fsmagic_8c.html#b9488f99ec7a2bebb56093a9a336e0ac">00054</a> <span class="preprocessor"></span><span class="preprocessor"># define major(dev) (((dev) >> 8) & 0xff)</span>
<a name="l00055"></a><a class="code" href="fsmagic_8c.html#316b71ec9ad36e62161fea5966645750">00055</a> <span class="preprocessor"></span><span class="preprocessor"># define minor(dev) ((dev) & 0xff)</span>
<a name="l00056"></a>00056 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
<a name="l00057"></a>00057 <span class="preprocessor"></span><span class="preprocessor">#undef HAVE_MAJOR</span>
<a name="l00058"></a>00058 <span class="preprocessor"></span>
<a name="l00059"></a>00059 <span class="preprocessor">#ifndef lint</span>
<a name="l00060"></a><a class="code" href="fsmagic_8c.html#d3e2f9b6d2324a17d1d4a526b01dbf40">00060</a> <span class="preprocessor"></span><a class="code" href="system_8h.html#b757e9ff04be9e1b95de08c5536ac334">FILE_RCSID</a>(<span class="stringliteral">"@(#)$Id: fsmagic.c,v 1.46 2005/06/25 15:52:14 christos Exp $"</span>)
<a name="l00061"></a>00061 <span class="preprocessor">#endif </span><span class="comment">/* lint */</span>
<a name="l00062"></a>00062
<a name="l00063"></a>00063 <span class="keyword">protected</span> <span class="keywordtype">int</span>
<a name="l00064"></a><a class="code" href="fsmagic_8c.html#43c665eb08a79a70f792781fb6489eac">00064</a> <a class="code" href="file_8h.html#43c665eb08a79a70f792781fb6489eac">file_fsmagic</a>(<span class="keyword">struct</span> <a class="code" href="structmagic__set.html">magic_set</a> *ms, <span class="keyword">const</span> <span class="keywordtype">char</span> *fn, <span class="keyword">struct</span> stat *sb)
<a name="l00065"></a>00065 {
<a name="l00066"></a>00066 <span class="keywordtype">int</span> ret = 0;
<a name="l00067"></a>00067 <span class="preprocessor">#ifdef S_IFLNK</span>
<a name="l00068"></a>00068 <span class="preprocessor"></span> <span class="keywordtype">char</span> buf[BUFSIZ+4];
<a name="l00069"></a>00069 <span class="keywordtype">int</span> nch;
<a name="l00070"></a>00070 <span class="keyword">struct </span>stat tstatbuf;
<a name="l00071"></a>00071 <span class="preprocessor">#endif</span>
<a name="l00072"></a>00072 <span class="preprocessor"></span>
<a name="l00073"></a>00073 <span class="keywordflow">if</span> (fn == NULL)
<a name="l00074"></a>00074 <span class="keywordflow">return</span> 0;
<a name="l00075"></a>00075
<a name="l00076"></a>00076 <span class="comment">/*</span>
<a name="l00077"></a>00077 <span class="comment"> * Fstat is cheaper but fails for files you don't have read perms on.</span>
<a name="l00078"></a>00078 <span class="comment"> * On 4.2BSD and similar systems, use lstat() to identify symlinks.</span>
<a name="l00079"></a>00079 <span class="comment"> */</span>
<a name="l00080"></a>00080 <span class="preprocessor">#ifdef S_IFLNK</span>
<a name="l00081"></a>00081 <span class="preprocessor"></span> <span class="keywordflow">if</span> ((ms-><a class="code" href="structmagic__set.html#7677d8f81949874cf4a626d1d4566fc6">flags</a> & MAGIC_SYMLINK) == 0)
<a name="l00082"></a>00082 ret = lstat(fn, sb);
<a name="l00083"></a>00083 <span class="keywordflow">else</span>
<a name="l00084"></a>00084 <span class="preprocessor">#endif</span>
<a name="l00085"></a>00085 <span class="preprocessor"></span> ret = stat(fn, sb); <span class="comment">/* don't merge into if; see "ret =" above */</span>
<a name="l00086"></a>00086
<a name="l00087"></a>00087 <span class="keywordflow">if</span> (ret) {
<a name="l00088"></a>00088 <span class="keywordflow">if</span> (ms-><a class="code" href="structmagic__set.html#7677d8f81949874cf4a626d1d4566fc6">flags</a> & MAGIC_ERROR) {
<a name="l00089"></a>00089 <a class="code" href="file_8h.html#b97a2a8e3a9e23613bcb1a49c4411919">file_error</a>(ms, <a class="code" href="system_8h.html#d65a8842cc674e3ddf69355898c0ecbf">errno</a>, <span class="stringliteral">"cannot stat `%s'"</span>, fn);
<a name="l00090"></a>00090 <span class="keywordflow">return</span> -1;
<a name="l00091"></a>00091 }
<a name="l00092"></a>00092 <span class="keywordflow">if</span> (<a class="code" href="file_8h.html#949757705ada92387535cfad72f9243c">file_printf</a>(ms, <span class="stringliteral">"cannot open `%s' (%s)"</span>,
<a name="l00093"></a>00093 fn, <a class="code" href="file_8h.html#b6b553574f85ce7727cf5b9a1b638293">strerror</a>(<a class="code" href="system_8h.html#d65a8842cc674e3ddf69355898c0ecbf">errno</a>)) == -1)
<a name="l00094"></a>00094 <span class="keywordflow">return</span> -1;
<a name="l00095"></a>00095 ms-><a class="code" href="structmagic__set.html#910647ba502f633464e06a64338f84a9">haderr</a>++;
<a name="l00096"></a>00096 <span class="keywordflow">return</span> -1;
<a name="l00097"></a>00097 }
<a name="l00098"></a>00098
<a name="l00099"></a>00099 <span class="keywordflow">if</span> ((ms-><a class="code" href="structmagic__set.html#7677d8f81949874cf4a626d1d4566fc6">flags</a> & MAGIC_MIME) != 0) {
<a name="l00100"></a>00100 <span class="keywordflow">if</span> ((sb->st_mode & S_IFMT) != S_IFREG) {
<a name="l00101"></a>00101 <span class="keywordflow">if</span> (<a class="code" href="file_8h.html#949757705ada92387535cfad72f9243c">file_printf</a>(ms, <span class="stringliteral">"application/x-not-regular-file"</span>)
<a name="l00102"></a>00102 == -1)
<a name="l00103"></a>00103 <span class="keywordflow">return</span> -1;
<a name="l00104"></a>00104 <span class="keywordflow">return</span> 1;
<a name="l00105"></a>00105 }
<a name="l00106"></a>00106 }
<a name="l00107"></a>00107 <span class="keywordflow">else</span> {
<a name="l00108"></a>00108 <span class="preprocessor">#ifdef S_ISUID</span>
<a name="l00109"></a>00109 <span class="preprocessor"></span> <span class="keywordflow">if</span> (sb->st_mode & S_ISUID)
<a name="l00110"></a>00110 <span class="keywordflow">if</span> (<a class="code" href="file_8h.html#949757705ada92387535cfad72f9243c">file_printf</a>(ms, <span class="stringliteral">"setuid "</span>) == -1)
<a name="l00111"></a>00111 <span class="keywordflow">return</span> -1;
<a name="l00112"></a>00112 <span class="preprocessor">#endif</span>
<a name="l00113"></a>00113 <span class="preprocessor"></span><span class="preprocessor">#ifdef S_ISGID</span>
<a name="l00114"></a>00114 <span class="preprocessor"></span> <span class="keywordflow">if</span> (sb->st_mode & S_ISGID)
<a name="l00115"></a>00115 <span class="keywordflow">if</span> (<a class="code" href="file_8h.html#949757705ada92387535cfad72f9243c">file_printf</a>(ms, <span class="stringliteral">"setgid "</span>) == -1)
<a name="l00116"></a>00116 <span class="keywordflow">return</span> -1;
<a name="l00117"></a>00117 <span class="preprocessor">#endif</span>
<a name="l00118"></a>00118 <span class="preprocessor"></span><span class="preprocessor">#ifdef S_ISVTX</span>
<a name="l00119"></a>00119 <span class="preprocessor"></span> <span class="keywordflow">if</span> (sb->st_mode & S_ISVTX)
<a name="l00120"></a>00120 <span class="keywordflow">if</span> (<a class="code" href="file_8h.html#949757705ada92387535cfad72f9243c">file_printf</a>(ms, <span class="stringliteral">"sticky "</span>) == -1)
<a name="l00121"></a>00121 <span class="keywordflow">return</span> -1;
<a name="l00122"></a>00122 <span class="preprocessor">#endif</span>
<a name="l00123"></a>00123 <span class="preprocessor"></span> }
<a name="l00124"></a>00124
<a name="l00125"></a>00125 <span class="keywordflow">switch</span> (sb->st_mode & S_IFMT) {
<a name="l00126"></a>00126 <span class="keywordflow">case</span> S_IFDIR:
<a name="l00127"></a>00127 <span class="keywordflow">if</span> (<a class="code" href="file_8h.html#949757705ada92387535cfad72f9243c">file_printf</a>(ms, <span class="stringliteral">"directory"</span>) == -1)
<a name="l00128"></a>00128 <span class="keywordflow">return</span> -1;
<a name="l00129"></a>00129 <span class="keywordflow">return</span> 1;
<a name="l00130"></a>00130 <span class="preprocessor">#ifdef S_IFCHR</span>
<a name="l00131"></a>00131 <span class="preprocessor"></span> <span class="keywordflow">case</span> S_IFCHR:
<a name="l00132"></a>00132 <span class="comment">/* </span>
<a name="l00133"></a>00133 <span class="comment"> * If -s has been specified, treat character special files</span>
<a name="l00134"></a>00134 <span class="comment"> * like ordinary files. Otherwise, just report that they</span>
<a name="l00135"></a>00135 <span class="comment"> * are block special files and go on to the next file.</span>
<a name="l00136"></a>00136 <span class="comment"> */</span>
<a name="l00137"></a>00137 <span class="keywordflow">if</span> ((ms->flags & MAGIC_DEVICES) != 0)
<a name="l00138"></a>00138 <span class="keywordflow">break</span>;
<a name="l00139"></a>00139 <span class="preprocessor">#ifdef HAVE_ST_RDEV</span>
<a name="l00140"></a>00140 <span class="preprocessor"></span><span class="preprocessor"># ifdef dv_unit</span>
<a name="l00141"></a>00141 <span class="preprocessor"></span> <span class="keywordflow">if</span> (<a class="code" href="file_8h.html#949757705ada92387535cfad72f9243c">file_printf</a>(ms, <span class="stringliteral">"character special (%d/%d/%d)"</span>,
<a name="l00142"></a>00142 <a class="code" href="system_8h.html#b9488f99ec7a2bebb56093a9a336e0ac">major</a>(sb->st_rdev), dv_unit(sb->st_rdev),
<a name="l00143"></a>00143 dv_subunit(sb->st_rdev)) == -1)
<a name="l00144"></a>00144 <span class="keywordflow">return</span> -1;
<a name="l00145"></a>00145 <span class="preprocessor"># else</span>
<a name="l00146"></a>00146 <span class="preprocessor"></span> <span class="keywordflow">if</span> (<a class="code" href="file_8h.html#949757705ada92387535cfad72f9243c">file_printf</a>(ms, <span class="stringliteral">"character special (%ld/%ld)"</span>,
<a name="l00147"></a>00147 (<span class="keywordtype">long</span>) <a class="code" href="system_8h.html#b9488f99ec7a2bebb56093a9a336e0ac">major</a>(sb->st_rdev), (<span class="keywordtype">long</span>) <a class="code" href="system_8h.html#316b71ec9ad36e62161fea5966645750">minor</a>(sb->st_rdev)) == -1)
<a name="l00148"></a>00148 <span class="keywordflow">return</span> -1;
<a name="l00149"></a>00149 <span class="preprocessor"># endif</span>
<a name="l00150"></a>00150 <span class="preprocessor"></span><span class="preprocessor">#else</span>
<a name="l00151"></a>00151 <span class="preprocessor"></span> <span class="keywordflow">if</span> (<a class="code" href="file_8h.html#949757705ada92387535cfad72f9243c">file_printf</a>(ms, <span class="stringliteral">"character special"</span>) == -1)
<a name="l00152"></a>00152 <span class="keywordflow">return</span> -1;
<a name="l00153"></a>00153 <span class="preprocessor">#endif</span>
<a name="l00154"></a>00154 <span class="preprocessor"></span> <span class="keywordflow">return</span> 1;
<a name="l00155"></a>00155 <span class="preprocessor">#endif</span>
<a name="l00156"></a>00156 <span class="preprocessor"></span><span class="preprocessor">#ifdef S_IFBLK</span>
<a name="l00157"></a>00157 <span class="preprocessor"></span> <span class="keywordflow">case</span> S_IFBLK:
<a name="l00158"></a>00158 <span class="comment">/* </span>
<a name="l00159"></a>00159 <span class="comment"> * If -s has been specified, treat block special files</span>
<a name="l00160"></a>00160 <span class="comment"> * like ordinary files. Otherwise, just report that they</span>
<a name="l00161"></a>00161 <span class="comment"> * are block special files and go on to the next file.</span>
<a name="l00162"></a>00162 <span class="comment"> */</span>
<a name="l00163"></a>00163 <span class="keywordflow">if</span> ((ms->flags & MAGIC_DEVICES) != 0)
<a name="l00164"></a>00164 <span class="keywordflow">break</span>;
<a name="l00165"></a>00165 <span class="preprocessor">#ifdef HAVE_ST_RDEV</span>
<a name="l00166"></a>00166 <span class="preprocessor"></span><span class="preprocessor"># ifdef dv_unit</span>
<a name="l00167"></a>00167 <span class="preprocessor"></span> <span class="keywordflow">if</span> (<a class="code" href="file_8h.html#949757705ada92387535cfad72f9243c">file_printf</a>(ms, <span class="stringliteral">"block special (%d/%d/%d)"</span>,
<a name="l00168"></a>00168 <a class="code" href="system_8h.html#b9488f99ec7a2bebb56093a9a336e0ac">major</a>(sb->st_rdev), dv_unit(sb->st_rdev),
<a name="l00169"></a>00169 dv_subunit(sb->st_rdev)) == -1)
<a name="l00170"></a>00170 <span class="keywordflow">return</span> -1;
<a name="l00171"></a>00171 <span class="preprocessor"># else</span>
<a name="l00172"></a>00172 <span class="preprocessor"></span> <span class="keywordflow">if</span> (<a class="code" href="file_8h.html#949757705ada92387535cfad72f9243c">file_printf</a>(ms, <span class="stringliteral">"block special (%ld/%ld)"</span>,
<a name="l00173"></a>00173 (<span class="keywordtype">long</span>)<a class="code" href="system_8h.html#b9488f99ec7a2bebb56093a9a336e0ac">major</a>(sb->st_rdev), (<span class="keywordtype">long</span>)<a class="code" href="system_8h.html#316b71ec9ad36e62161fea5966645750">minor</a>(sb->st_rdev)) == -1)
<a name="l00174"></a>00174 <span class="keywordflow">return</span> -1;
<a name="l00175"></a>00175 <span class="preprocessor"># endif</span>
<a name="l00176"></a>00176 <span class="preprocessor"></span><span class="preprocessor">#else</span>
<a name="l00177"></a>00177 <span class="preprocessor"></span> <span class="keywordflow">if</span> (<a class="code" href="file_8h.html#949757705ada92387535cfad72f9243c">file_printf</a>(ms, <span class="stringliteral">"block special"</span>) == -1)
<a name="l00178"></a>00178 <span class="keywordflow">return</span> -1;
<a name="l00179"></a>00179 <span class="preprocessor">#endif</span>
<a name="l00180"></a>00180 <span class="preprocessor"></span> <span class="keywordflow">return</span> 1;
<a name="l00181"></a>00181 <span class="preprocessor">#endif</span>
<a name="l00182"></a>00182 <span class="preprocessor"></span> <span class="comment">/* TODO add code to handle V7 MUX and Blit MUX files */</span>
<a name="l00183"></a>00183 <span class="preprocessor">#ifdef S_IFIFO</span>
<a name="l00184"></a>00184 <span class="preprocessor"></span> <span class="keywordflow">case</span> S_IFIFO:
<a name="l00185"></a>00185 <span class="keywordflow">if</span>((ms->flags & MAGIC_DEVICES) != 0)
<a name="l00186"></a>00186 <span class="keywordflow">break</span>;
<a name="l00187"></a>00187 <span class="keywordflow">if</span> (<a class="code" href="file_8h.html#949757705ada92387535cfad72f9243c">file_printf</a>(ms, <span class="stringliteral">"fifo (named pipe)"</span>) == -1)
<a name="l00188"></a>00188 <span class="keywordflow">return</span> -1;
<a name="l00189"></a>00189 <span class="keywordflow">return</span> 1;
<a name="l00190"></a>00190 <span class="preprocessor">#endif</span>
<a name="l00191"></a>00191 <span class="preprocessor"></span><span class="preprocessor">#ifdef S_IFDOOR</span>
<a name="l00192"></a>00192 <span class="preprocessor"></span> <span class="keywordflow">case</span> S_IFDOOR:
<a name="l00193"></a>00193 <span class="keywordflow">if</span> (<a class="code" href="file_8h.html#949757705ada92387535cfad72f9243c">file_printf</a>(ms, <span class="stringliteral">"door"</span>) == -1)
<a name="l00194"></a>00194 <span class="keywordflow">return</span> -1;
<a name="l00195"></a>00195 <span class="keywordflow">return</span> 1;
<a name="l00196"></a>00196 <span class="preprocessor">#endif</span>
<a name="l00197"></a>00197 <span class="preprocessor"></span><span class="preprocessor">#ifdef S_IFLNK</span>
<a name="l00198"></a>00198 <span class="preprocessor"></span> <span class="keywordflow">case</span> S_IFLNK:
<a name="l00199"></a>00199 <span class="keywordflow">if</span> ((nch = readlink(fn, buf, BUFSIZ-1)) <= 0) {
<a name="l00200"></a>00200 <span class="keywordflow">if</span> (ms->flags & MAGIC_ERROR) {
<a name="l00201"></a>00201 <a class="code" href="file_8h.html#b97a2a8e3a9e23613bcb1a49c4411919">file_error</a>(ms, <a class="code" href="system_8h.html#d65a8842cc674e3ddf69355898c0ecbf">errno</a>, <span class="stringliteral">"unreadable symlink `%s'"</span>,
<a name="l00202"></a>00202 fn);
<a name="l00203"></a>00203 <span class="keywordflow">return</span> -1;
<a name="l00204"></a>00204 }
<a name="l00205"></a>00205 <span class="keywordflow">if</span> (<a class="code" href="file_8h.html#949757705ada92387535cfad72f9243c">file_printf</a>(ms,
<a name="l00206"></a>00206 <span class="stringliteral">"unreadable symlink `%s' (%s)"</span>, fn,
<a name="l00207"></a>00207 <a class="code" href="file_8h.html#b6b553574f85ce7727cf5b9a1b638293">strerror</a>(<a class="code" href="system_8h.html#d65a8842cc674e3ddf69355898c0ecbf">errno</a>)) == -1)
<a name="l00208"></a>00208 <span class="keywordflow">return</span> -1;
<a name="l00209"></a>00209 <span class="keywordflow">return</span> 1;
<a name="l00210"></a>00210 }
<a name="l00211"></a>00211 buf[nch] = <span class="charliteral">'\0'</span>; <span class="comment">/* readlink(2) forgets this */</span>
<a name="l00212"></a>00212
<a name="l00213"></a>00213 <span class="comment">/* If broken symlink, say so and quit early. */</span>
<a name="l00214"></a>00214 <span class="keywordflow">if</span> (*buf == <span class="charliteral">'/'</span>) {
<a name="l00215"></a>00215 <span class="keywordflow">if</span> (stat(buf, &tstatbuf) < 0) {
<a name="l00216"></a>00216 <span class="keywordflow">if</span> (ms->flags & MAGIC_ERROR) {
<a name="l00217"></a>00217 <a class="code" href="file_8h.html#b97a2a8e3a9e23613bcb1a49c4411919">file_error</a>(ms, <a class="code" href="system_8h.html#d65a8842cc674e3ddf69355898c0ecbf">errno</a>,
<a name="l00218"></a>00218 <span class="stringliteral">"broken symbolic link to `%s'"</span>, buf);
<a name="l00219"></a>00219 <span class="keywordflow">return</span> -1;
<a name="l00220"></a>00220 }
<a name="l00221"></a>00221 <span class="keywordflow">if</span> (<a class="code" href="file_8h.html#949757705ada92387535cfad72f9243c">file_printf</a>(ms, <span class="stringliteral">"broken symbolic link to `%s'"</span>,
<a name="l00222"></a>00222 buf) == -1)
<a name="l00223"></a>00223 <span class="keywordflow">return</span> -1;
<a name="l00224"></a>00224 <span class="keywordflow">return</span> 1;
<a name="l00225"></a>00225 }
<a name="l00226"></a>00226 }
<a name="l00227"></a>00227 <span class="keywordflow">else</span> {
<a name="l00228"></a>00228 <span class="keywordtype">char</span> *tmp;
<a name="l00229"></a>00229 <span class="keywordtype">char</span> buf2[BUFSIZ+BUFSIZ+4];
<a name="l00230"></a>00230
<a name="l00231"></a>00231 <span class="keywordflow">if</span> ((tmp = strrchr(fn, <span class="charliteral">'/'</span>)) == NULL) {
<a name="l00232"></a>00232 tmp = buf; <span class="comment">/* in current directory anyway */</span>
<a name="l00233"></a>00233 } <span class="keywordflow">else</span> {
<a name="l00234"></a>00234 <span class="keywordflow">if</span> (tmp - fn + 1 > BUFSIZ) {
<a name="l00235"></a>00235 <span class="keywordflow">if</span> (ms->flags & MAGIC_ERROR) {
<a name="l00236"></a>00236 <a class="code" href="file_8h.html#b97a2a8e3a9e23613bcb1a49c4411919">file_error</a>(ms, 0,
<a name="l00237"></a>00237 <span class="stringliteral">"path too long: `%s'"</span>, buf);
<a name="l00238"></a>00238 <span class="keywordflow">return</span> -1;
<a name="l00239"></a>00239 }
<a name="l00240"></a>00240 <span class="keywordflow">if</span> (<a class="code" href="file_8h.html#949757705ada92387535cfad72f9243c">file_printf</a>(ms,
<a name="l00241"></a>00241 <span class="stringliteral">"path too long: `%s'"</span>, fn) == -1)
<a name="l00242"></a>00242 <span class="keywordflow">return</span> -1;
<a name="l00243"></a>00243 <span class="keywordflow">return</span> 1;
<a name="l00244"></a>00244 }
<a name="l00245"></a>00245 (void)strcpy(buf2, fn); <span class="comment">/* take dir part */</span>
<a name="l00246"></a>00246 buf2[tmp - fn + 1] = <span class="charliteral">'\0'</span>;
<a name="l00247"></a>00247 (void)strcat(buf2, buf); <span class="comment">/* plus (rel) link */</span>
<a name="l00248"></a>00248 tmp = buf2;
<a name="l00249"></a>00249 }
<a name="l00250"></a>00250 <span class="keywordflow">if</span> (stat(tmp, &tstatbuf) < 0) {
<a name="l00251"></a>00251 <span class="keywordflow">if</span> (ms->flags & MAGIC_ERROR) {
<a name="l00252"></a>00252 <a class="code" href="file_8h.html#b97a2a8e3a9e23613bcb1a49c4411919">file_error</a>(ms, <a class="code" href="system_8h.html#d65a8842cc674e3ddf69355898c0ecbf">errno</a>,
<a name="l00253"></a>00253 <span class="stringliteral">"broken symbolic link to `%s'"</span>,
<a name="l00254"></a>00254 buf);
<a name="l00255"></a>00255 <span class="keywordflow">return</span> -1;
<a name="l00256"></a>00256 }
<a name="l00257"></a>00257 <span class="keywordflow">if</span> (<a class="code" href="file_8h.html#949757705ada92387535cfad72f9243c">file_printf</a>(ms,
<a name="l00258"></a>00258 <span class="stringliteral">"broken symbolic link to `%s'"</span>, buf) == -1)
<a name="l00259"></a>00259 <span class="keywordflow">return</span> -1;
<a name="l00260"></a>00260 <span class="keywordflow">return</span> 1;
<a name="l00261"></a>00261 }
<a name="l00262"></a>00262 }
<a name="l00263"></a>00263
<a name="l00264"></a>00264 <span class="comment">/* Otherwise, handle it. */</span>
<a name="l00265"></a>00265 <span class="keywordflow">if</span> ((ms->flags & MAGIC_SYMLINK) != 0) {
<a name="l00266"></a>00266 <span class="keyword">const</span> <span class="keywordtype">char</span> *p;
<a name="l00267"></a>00267 ms->flags &= MAGIC_SYMLINK;
<a name="l00268"></a>00268 p = magic_file(ms, buf);
<a name="l00269"></a>00269 ms->flags |= MAGIC_SYMLINK;
<a name="l00270"></a>00270 <span class="keywordflow">return</span> p != NULL ? 1 : -1;
<a name="l00271"></a>00271 } <span class="keywordflow">else</span> { <span class="comment">/* just print what it points to */</span>
<a name="l00272"></a>00272 <span class="keywordflow">if</span> (<a class="code" href="file_8h.html#949757705ada92387535cfad72f9243c">file_printf</a>(ms, <span class="stringliteral">"symbolic link to `%s'"</span>,
<a name="l00273"></a>00273 buf) == -1)
<a name="l00274"></a>00274 <span class="keywordflow">return</span> -1;
<a name="l00275"></a>00275 }
<a name="l00276"></a>00276 <span class="keywordflow">return</span> 1;
<a name="l00277"></a>00277 <span class="preprocessor">#endif</span>
<a name="l00278"></a>00278 <span class="preprocessor"></span><span class="preprocessor">#ifdef S_IFSOCK</span>
<a name="l00279"></a>00279 <span class="preprocessor"></span><span class="preprocessor">#ifndef __COHERENT__</span>
<a name="l00280"></a>00280 <span class="preprocessor"></span> <span class="keywordflow">case</span> <a class="code" href="system_8h.html#28e80cd43106882904be148b2a397d42">S_IFSOCK</a>:
<a name="l00281"></a>00281 <span class="keywordflow">if</span> (<a class="code" href="file_8h.html#949757705ada92387535cfad72f9243c">file_printf</a>(ms, <span class="stringliteral">"socket"</span>) == -1)
<a name="l00282"></a>00282 <span class="keywordflow">return</span> -1;
<a name="l00283"></a>00283 <span class="keywordflow">return</span> 1;
<a name="l00284"></a>00284 <span class="preprocessor">#endif</span>
<a name="l00285"></a>00285 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
<a name="l00286"></a>00286 <span class="preprocessor"></span> <span class="keywordflow">case</span> S_IFREG:
<a name="l00287"></a>00287 <span class="keywordflow">break</span>;
<a name="l00288"></a>00288 <span class="keywordflow">default</span>:
<a name="l00289"></a>00289 <a class="code" href="file_8h.html#b97a2a8e3a9e23613bcb1a49c4411919">file_error</a>(ms, 0, <span class="stringliteral">"invalid mode 0%o"</span>, sb->st_mode);
<a name="l00290"></a>00290 <span class="keywordflow">return</span> -1;
<a name="l00291"></a>00291 <span class="comment">/*@notreached@*/</span> <span class="keywordflow">break</span>;
<a name="l00292"></a>00292 }
<a name="l00293"></a>00293
<a name="l00294"></a>00294 <span class="comment">/*</span>
<a name="l00295"></a>00295 <span class="comment"> * regular file, check next possibility</span>
<a name="l00296"></a>00296 <span class="comment"> *</span>
<a name="l00297"></a>00297 <span class="comment"> * If stat() tells us the file has zero length, report here that</span>
<a name="l00298"></a>00298 <span class="comment"> * the file is empty, so we can skip all the work of opening and </span>
<a name="l00299"></a>00299 <span class="comment"> * reading the file.</span>
<a name="l00300"></a>00300 <span class="comment"> * But if the -s option has been given, we skip this optimization,</span>
<a name="l00301"></a>00301 <span class="comment"> * since on some systems, stat() reports zero size for raw disk</span>
<a name="l00302"></a>00302 <span class="comment"> * partitions. (If the block special device really has zero length,</span>
<a name="l00303"></a>00303 <span class="comment"> * the fact that it is empty will be detected and reported correctly</span>
<a name="l00304"></a>00304 <span class="comment"> * when we read the file.)</span>
<a name="l00305"></a>00305 <span class="comment"> */</span>
<a name="l00306"></a>00306 <span class="keywordflow">if</span> ((ms-><a class="code" href="structmagic__set.html#7677d8f81949874cf4a626d1d4566fc6">flags</a> & MAGIC_DEVICES) == 0 && sb->st_size == 0) {
<a name="l00307"></a>00307 <span class="keywordflow">if</span> (<a class="code" href="file_8h.html#949757705ada92387535cfad72f9243c">file_printf</a>(ms, (ms-><a class="code" href="structmagic__set.html#7677d8f81949874cf4a626d1d4566fc6">flags</a> & MAGIC_MIME) ?
<a name="l00308"></a>00308 <span class="stringliteral">"application/x-empty"</span> : <span class="stringliteral">"empty"</span>) == -1)
<a name="l00309"></a>00309 <span class="keywordflow">return</span> -1;
<a name="l00310"></a>00310 <span class="keywordflow">return</span> 1;
<a name="l00311"></a>00311 }
<a name="l00312"></a>00312 <span class="keywordflow">return</span> 0;
<a name="l00313"></a>00313 }
</pre></div><hr size="1"><address style="align: right;"><small>Generated on 1 Oct 2013 for rpm by
<a href="http://www.doxygen.org/index.html">
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