package c::stuff; # $Id: stuff.pm 214710 2005-12-15 09:14:01Z prigaux $
use strict;
use vars qw($VERSION @ISA);
require DynaLoader;
@ISA = qw(DynaLoader);
$VERSION = '0.01';
# perl_checker: EXPORT-ALL
c::stuff->bootstrap($VERSION);
1;
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<a href='/software/drakx/?h=user/erwan/bug-13680'>summary</a><a href='/software/drakx/refs/?h=user/erwan/bug-13680&id=48dc8c9b563b1d3f63689eb947bac9cb97bff90d'>refs</a><a href='/software/drakx/log/perl-install/devices.pm?h=user/erwan/bug-13680'>log</a><a class='active' href='/software/drakx/tree/perl-install/devices.pm?h=user/erwan/bug-13680&id=48dc8c9b563b1d3f63689eb947bac9cb97bff90d'>tree</a><a href='/software/drakx/commit/perl-install/devices.pm?h=user/erwan/bug-13680&id=48dc8c9b563b1d3f63689eb947bac9cb97bff90d'>commit</a><a href='/software/drakx/diff/perl-install/devices.pm?h=user/erwan/bug-13680&id=48dc8c9b563b1d3f63689eb947bac9cb97bff90d'>diff</a><a href='/software/drakx/stats/perl-install/devices.pm?h=user/erwan/bug-13680'>stats</a></td><td class='form'><form class='right' method='get' action='/software/drakx/log/perl-install/devices.pm'>
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</pre></td>
<td class='lines'><pre><code><span class="hl kwa">package</span> devices<span class="hl opt">;</span> <span class="hl slc"># $Id$</span>
<span class="hl kwa">use</span> diagnostics<span class="hl opt">;</span>
<span class="hl kwa">use</span> strict<span class="hl opt">;</span>
<span class="hl kwa">use</span> common<span class="hl opt">;</span>
<span class="hl kwa">use</span> run_program<span class="hl opt">;</span>
<span class="hl kwa">use</span> <span class="hl kwc">log</span><span class="hl opt">;</span>
<span class="hl kwa">use</span> c<span class="hl opt">;</span>
<span class="hl kwa">sub</span> size <span class="hl opt">{</span>
<span class="hl kwc">my</span> <span class="hl opt">(</span><span class="hl kwb">$dev</span><span class="hl opt">) =</span> <span class="hl kwb">@_</span><span class="hl opt">;</span>
<span class="hl kwc">sysopen</span><span class="hl opt">(</span><span class="hl kwc">my</span> <span class="hl kwb">$F, $dev,</span> <span class="hl num">0</span><span class="hl opt">)</span> <span class="hl kwc">or log</span><span class="hl opt">::</span>l<span class="hl opt">(</span><span class="hl str">"open</span> <span class="hl ipl">$dev</span><span class="hl str">:</span> <span class="hl ipl">$!</span><span class="hl str">"</span><span class="hl opt">),</span> <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
<span class="hl kwc">my</span> <span class="hl kwb">$valid_offset</span> <span class="hl opt">=</span> <span class="hl kwa">sub</span> <span class="hl opt">{</span> <span class="hl kwc">sysseek</span><span class="hl opt">(</span><span class="hl kwb">$F, $_</span><span class="hl opt">[</span><span class="hl num">0</span><span class="hl opt">],</span> <span class="hl num">0</span><span class="hl opt">) &&</span> <span class="hl kwc">sysread</span><span class="hl opt">(</span><span class="hl kwb">$F,</span> <span class="hl kwc">my</span> <span class="hl kwb">$_a,</span> <span class="hl num">1</span><span class="hl opt">) };</span>
<span class="hl slc">#- first try getting the size nicely</span>
<span class="hl kwa">if</span> <span class="hl opt">(</span><span class="hl kwc">my</span> <span class="hl kwb">$size</span> <span class="hl opt">=</span> c<span class="hl opt">::</span>total_sectors<span class="hl opt">(</span><span class="hl kwc">fileno</span> <span class="hl kwb">$F</span><span class="hl opt">)) {</span>
<span class="hl kwa">return</span> <span class="hl kwb">$size</span> <span class="hl opt">*</span> <span class="hl kwb">$common</span><span class="hl opt">::</span>SECTORSIZE<span class="hl opt">;</span>
<span class="hl opt">}</span>
<span class="hl slc">#- sad it did not work, well searching the size using the dichotomy algorithm!</span>
<span class="hl kwc">my</span> <span class="hl kwb">$low</span> <span class="hl opt">=</span> <span class="hl num">0</span><span class="hl opt">;</span>
<span class="hl kwc">my</span> <span class="hl opt">(</span><span class="hl kwb">$high, $mid</span><span class="hl opt">);</span>
<span class="hl slc">#- first find n where 2^n < size <= 2^n+1</span>
<span class="hl kwa">for</span> <span class="hl opt">(</span><span class="hl kwb">$high</span> <span class="hl opt">=</span> <span class="hl num">1</span><span class="hl opt">;</span> <span class="hl kwb">$high</span> <span class="hl opt">></span> <span class="hl num">0</span> <span class="hl opt">&&</span> <span class="hl kwb">$valid_offset</span><span class="hl opt">->(</span><span class="hl kwb">$high</span><span class="hl opt">);</span> <span class="hl kwb">$high</span> <span class="hl opt">*=</span> <span class="hl num">2</span><span class="hl opt">) {</span> <span class="hl kwb">$low</span> <span class="hl opt">=</span> <span class="hl kwb">$high</span> <span class="hl opt">}</span>
<span class="hl kwa">while</span> <span class="hl opt">(</span><span class="hl kwb">$low</span> <span class="hl opt"><</span> <span class="hl kwb">$high</span> <span class="hl opt">-</span> <span class="hl num">1</span><span class="hl opt">) {</span>
<span class="hl kwb">$mid</span> <span class="hl opt">=</span> <span class="hl kwc">int</span><span class="hl opt">((</span><span class="hl kwb">$low</span> <span class="hl opt">+</span> <span class="hl kwb">$high</span><span class="hl opt">) /</span> <span class="hl num">2</span><span class="hl opt">);</span>
<span class="hl kwb">$valid_offset</span><span class="hl opt">->(</span><span class="hl kwb">$mid</span><span class="hl opt">)</span> ? <span class="hl kwb">$low</span> <span class="hl opt">:</span> <span class="hl kwb">$high</span> <span class="hl opt">=</span> <span class="hl kwb">$mid</span><span class="hl opt">;</span>
<span class="hl opt">}</span>
<span class="hl kwb">$low</span> <span class="hl opt">+</span> <span class="hl num">1</span><span class="hl opt">;</span>
<span class="hl opt">}</span>
<span class="hl kwa">sub</span> del_loop <span class="hl opt">{</span>
<span class="hl kwc">my</span> <span class="hl opt">(</span><span class="hl kwb">$dev</span><span class="hl opt">) =</span> <span class="hl kwb">@_</span><span class="hl opt">;</span>
run_program<span class="hl opt">::</span>run<span class="hl opt">(</span><span class="hl str">"losetup"</span><span class="hl opt">,</span> <span class="hl str">"-d"</span><span class="hl opt">,</span> <span class="hl kwb">$dev</span><span class="hl opt">);</span>
<span class="hl opt">}</span>
<span class="hl kwa">sub</span> find_free_loop<span class="hl opt">() {</span>
<span class="hl kwa">foreach</span> <span class="hl opt">(</span><span class="hl num">0</span><span class="hl opt">.</span><span class="hl num">.255</span><span class="hl opt">) {</span>
<span class="hl kwc">my</span> <span class="hl kwb">$dev</span> <span class="hl opt">=</span> make<span class="hl opt">(</span><span class="hl str">"loop</span><span class="hl ipl">$_</span><span class="hl str">"</span><span class="hl opt">);</span>
<span class="hl kwc">sysopen</span><span class="hl opt">(</span><span class="hl kwc">my</span> <span class="hl kwb">$F, $dev,</span> <span class="hl num">2</span><span class="hl opt">)</span> <span class="hl kwc">or</span> <span class="hl kwa">next</span><span class="hl opt">;</span>
<span class="hl opt">!</span><span class="hl kwc">ioctl</span><span class="hl opt">(</span><span class="hl kwb">$F,</span> c<span class="hl opt">::</span>LOOP_GET_STATUS<span class="hl opt">(),</span> <span class="hl kwc">my</span> <span class="hl kwb">$_tmp</span><span class="hl opt">) &&</span> <span class="hl kwb">$!</span> <span class="hl opt">==</span> <span class="hl num">6</span> <span class="hl kwc">or</span> <span class="hl kwa">next</span><span class="hl opt">;</span> <span class="hl slc">#- 6 == ENXIO</span>
<span class="hl kwa">return</span> <span class="hl kwb">$dev</span><span class="hl opt">;</span>
<span class="hl opt">}</span>
<span class="hl kwc">die</span> <span class="hl str">"no free loop found"</span><span class="hl opt">;</span>
<span class="hl opt">}</span>
<span class="hl kwa">sub</span> set_loop <span class="hl opt">{</span>
<span class="hl kwc">my</span> <span class="hl opt">(</span><span class="hl kwb">$file, $o_encrypt_key, $o_encryption</span><span class="hl opt">) =</span> <span class="hl kwb">@_</span><span class="hl opt">;</span>
<span class="hl kwc">eval</span> <span class="hl opt">{</span> modules<span class="hl opt">::</span>load<span class="hl opt">(</span><span class="hl str">'loop'</span><span class="hl opt">) };</span>
<span class="hl kwc">my</span> <span class="hl kwb">$dev</span> <span class="hl opt">=</span> find_free_loop<span class="hl opt">();</span>
<span class="hl kwa">if</span> <span class="hl opt">(</span><span class="hl kwb">$o_encrypt_key</span> <span class="hl opt">&&</span> <span class="hl kwb">$o_encryption</span><span class="hl opt">) {</span>
<span class="hl kwc">eval</span> <span class="hl opt">{</span> modules<span class="hl opt">::</span>load<span class="hl opt">(</span><span class="hl str">'cryptoloop'</span><span class="hl opt">,</span> <span class="hl str">'aes-i586'</span><span class="hl opt">) };</span>
<span class="hl kwc">my</span> <span class="hl kwb">$cmd</span> <span class="hl opt">=</span> <span class="hl str">"losetup -p 0 -e</span> <span class="hl ipl">$o_encryption</span> <span class="hl str"></span><span class="hl ipl">$dev</span> <span class="hl str"></span><span class="hl ipl">$file</span><span class="hl str">"</span><span class="hl opt">;</span>
<span class="hl kwc">log</span><span class="hl opt">::</span>l<span class="hl opt">(</span><span class="hl str">"calling</span> <span class="hl ipl">$cmd</span><span class="hl str">"</span><span class="hl opt">);</span>
<span class="hl kwc">open</span><span class="hl opt">(</span><span class="hl kwc">my</span> <span class="hl kwb">$F,</span> <span class="hl str">"|</span><span class="hl ipl">$cmd</span><span class="hl str">"</span><span class="hl opt">);</span>
<span class="hl kwc">print</span> <span class="hl kwb">$F $o_encrypt_key</span><span class="hl opt">;</span>
<span class="hl kwc">close</span> <span class="hl kwb">$F</span> <span class="hl kwc">or die</span> <span class="hl str">"losetup failed"</span><span class="hl opt">;</span>
<span class="hl opt">}</span> <span class="hl kwa">else</span> <span class="hl opt">{</span>
run_program<span class="hl opt">::</span>run<span class="hl opt">(</span><span class="hl str">"losetup"</span><span class="hl opt">,</span> <span class="hl kwb">$dev, $file</span><span class="hl opt">)</span> <span class="hl kwc">or</span> <span class="hl kwa">return</span><span class="hl opt">;</span>
<span class="hl opt">}</span>
<span class="hl kwb">$dev</span><span class="hl opt">;</span>
<span class="hl opt">}</span>
<span class="hl kwa">sub</span> entry <span class="hl opt">{</span>
<span class="hl kwc">my</span> <span class="hl opt">(</span><span class="hl kwb">$type, $major, $minor</span><span class="hl opt">);</span>
<span class="hl kwc">local</span> <span class="hl opt">(</span><span class="hl kwb">$_</span><span class="hl opt">) =</span> <span class="hl kwb">@_</span><span class="hl opt">;</span>
<span class="hl kwa">if</span> <span class="hl opt">(</span><span class="hl kwd">/^0x([\da-f]{3,4})$/i</span><span class="hl opt">) {</span>
<span class="hl kwb">$type</span> <span class="hl opt">=</span> c<span class="hl opt">::</span>S_IFBLK<span class="hl opt">();</span>
<span class="hl opt">(</span><span class="hl kwb">$major, $minor</span><span class="hl opt">) =</span> unmakedev<span class="hl opt">(</span><span class="hl kwc">hex</span> <span class="hl kwb">$1</span><span class="hl opt">);</span>
<span class="hl opt">}</span> <span class="hl kwa">elsif</span> <span class="hl opt">(</span><span class="hl kwd">/^sd(.)(\d{0,2})/</span><span class="hl opt">) {</span>
<span class="hl kwb">$type</span> <span class="hl opt">=</span> c<span class="hl opt">::</span>S_IFBLK<span class="hl opt">();</span>
<span class="hl kwb">$major</span> <span class="hl opt">=</span> <span class="hl num">8</span><span class="hl opt">;</span>
<span class="hl kwb">$minor</span> <span class="hl opt">=</span> <span class="hl num">16</span> <span class="hl opt">* (</span><span class="hl kwc">ord</span><span class="hl opt">(</span><span class="hl kwb">$1</span><span class="hl opt">) -</span> <span class="hl kwc">ord</span><span class="hl opt">(</span><span class="hl str">'a'</span><span class="hl opt">)) + (</span><span class="hl kwb">$2</span> <span class="hl opt">||</span> <span class="hl num">0</span><span class="hl opt">);</span>
<span class="hl opt">}</span> <span class="hl kwa">elsif</span> <span class="hl opt">(</span><span class="hl kwd">/^hd(.)(\d{0,2})/</span><span class="hl opt">) {</span>
<span class="hl kwb">$type</span> <span class="hl opt">=</span> c<span class="hl opt">::</span>S_IFBLK<span class="hl opt">();</span>
<span class="hl opt">(</span><span class="hl kwb">$major, $minor</span><span class="hl opt">) =</span>
<span class="hl opt">@{ ${{</span><span class="hl str">'a'</span> <span class="hl opt">=> [</span><span class="hl num">3</span><span class="hl opt">,</span> <span class="hl num">0</span><span class="hl opt">],</span> <span class="hl str">'b'</span> <span class="hl opt">=> [</span><span class="hl num">3</span><span class="hl opt">,</span> <span class="hl num">64</span><span class="hl opt">],</span>
<span class="hl str">'c'</span> <span class="hl opt">=> [</span><span class="hl num">22</span><span class="hl opt">,</span><span class="hl num">0</span><span class="hl opt">],</span> <span class="hl str">'d'</span> <span class="hl opt">=> [</span><span class="hl num">22</span><span class="hl opt">,</span><span class="hl num">64</span><span class="hl opt">],</span>
<span class="hl str">'e'</span> <span class="hl opt">=> [</span><span class="hl num">33</span><span class="hl opt">,</span><span class="hl num">0</span><span class="hl opt">],</span> <span class="hl str">'f'</span> <span class="hl opt">=> [</span><span class="hl num">33</span><span class="hl opt">,</span><span class="hl num">64</span><span class="hl opt">],</span>
<span class="hl str">'g'</span> <span class="hl opt">=> [</span><span class="hl num">34</span><span class="hl opt">,</span><span class="hl num">0</span><span class="hl opt">],</span> <span class="hl str">'h'</span> <span class="hl opt">=> [</span><span class="hl num">34</span><span class="hl opt">,</span><span class="hl num">64</span><span class="hl opt">],</span>
<span class="hl str">'i'</span> <span class="hl opt">=> [</span><span class="hl num">56</span><span class="hl opt">,</span><span class="hl num">0</span><span class="hl opt">],</span> <span class="hl str">'j'</span> <span class="hl opt">=> [</span><span class="hl num">56</span><span class="hl opt">,</span><span class="hl num">64</span><span class="hl opt">],</span>
<span class="hl str">'k'</span> <span class="hl opt">=> [</span><span class="hl num">57</span><span class="hl opt">,</span><span class="hl num">0</span><span class="hl opt">],</span> <span class="hl str">'l'</span> <span class="hl opt">=> [</span><span class="hl num">57</span><span class="hl opt">,</span><span class="hl num">64</span><span class="hl opt">],</span>
<span class="hl str">'m'</span> <span class="hl opt">=> [</span><span class="hl num">88</span><span class="hl opt">,</span><span class="hl num">0</span><span class="hl opt">],</span> <span class="hl str">'n'</span> <span class="hl opt">=> [</span><span class="hl num">88</span><span class="hl opt">,</span><span class="hl num">64</span><span class="hl opt">],</span>
<span class="hl str">'o'</span> <span class="hl opt">=> [</span><span class="hl num">89</span><span class="hl opt">,</span><span class="hl num">0</span><span class="hl opt">],</span> <span class="hl str">'p'</span> <span class="hl opt">=> [</span><span class="hl num">89</span><span class="hl opt">,</span><span class="hl num">64</span><span class="hl opt">],</span>
<span class="hl str">'q'</span> <span class="hl opt">=> [</span><span class="hl num">90</span><span class="hl opt">,</span><span class="hl num">0</span><span class="hl opt">],</span> <span class="hl str">'r'</span> <span class="hl opt">=> [</span><span class="hl num">90</span><span class="hl opt">,</span><span class="hl num">64</span><span class="hl opt">],</span>
<span class="hl str">'s'</span> <span class="hl opt">=> [</span><span class="hl num">91</span><span class="hl opt">,</span><span class="hl num">0</span><span class="hl opt">],</span> <span class="hl str">'t'</span> <span class="hl opt">=> [</span><span class="hl num">91</span><span class="hl opt">,</span><span class="hl num">64</span><span class="hl opt">],</span>
<span class="hl opt">}}{</span><span class="hl kwb">$1</span><span class="hl opt">}</span> <span class="hl kwc">or</span> internal_error<span class="hl opt">(</span><span class="hl str">"unknown device</span> <span class="hl ipl">$_</span><span class="hl str">"</span><span class="hl opt">) };</span>
<span class="hl kwb">$minor</span> <span class="hl opt">+=</span> <span class="hl kwb">$2</span> <span class="hl opt">||</span> <span class="hl num">0</span><span class="hl opt">;