copycd.c.htm

光驱cdrom读写源代码,scsi命令解析

<a class="l" name="359">    359 </a>		<a href="/source/s?defs=print_n_flush">print_n_flush</a>(
<a class="hl" name="360">    360 </a>		<a href="/source/s?defs=gettext">gettext</a>(<span class="s">"Insert a blank media in the drive and press Enter."</span>));
<a class="l" name="361">    361 </a>		(<b>void</b>) <a href="/source/s?defs=fflush">fflush</a>(<a href="/source/s?defs=stdin">stdin</a>);
<a class="l" name="362">    362 </a>		<b>if</b> (<a href="/source/s?defs=target">target</a>) {
<a class="l" name="363">    363 </a>			<a href="/source/s?defs=fini_device">fini_device</a>(<a href="/source/s?defs=target">target</a>);
<a class="l" name="364">    364 </a>			<a href="/source/s?defs=target">target</a> = <a href="/source/s?defs=NULL">NULL</a>;
<a class="l" name="365">    365 </a>		}
<a class="l" name="366">    366 </a>		(<b>void</b>) <a href="/source/s?defs=getchar">getchar</a>();
<a class="l" name="367">    367 </a>		(<b>void</b>) <a href="/source/s?defs=sleep">sleep</a>(<span class="n">4</span>);
<a class="l" name="368">    368 </a>		(<b>void</b>) <a href="/source/s?defs=setup_target">setup_target</a>(<a href="/source/s?defs=SCAN_WRITERS">SCAN_WRITERS</a>);
<a class="l" name="369">    369 </a>		<b>if</b> (<a href="/source/s?defs=target">target</a>)
<a class="hl" name="370">    370 </a>			<a href="/source/s?defs=get_media_type">get_media_type</a>(<a href="/source/s?defs=target">target</a>-&gt;<a href="/source/s?defs=d_fd">d_fd</a>);
<a class="l" name="371">    371 </a>	} <b>while</b> ((<a href="/source/s?defs=target">target</a> == <a href="/source/s?defs=NULL">NULL</a>) ||
<a class="l" name="372">    372 </a>	    ((<a href="/source/s?defs=device_type">device_type</a> == <a href="/source/s?defs=DVD_PLUS_W">DVD_PLUS_W</a>)? <a href="/source/s?defs=check_device">check_device</a>(<a href="/source/s?defs=target">target</a>, <a href="/source/s?defs=CHECK_NO_MEDIA">CHECK_NO_MEDIA</a>):
<a class="l" name="373">    373 </a>	    <a href="/source/s?defs=check_device">check_device</a>(<a href="/source/s?defs=target">target</a>, <a href="/source/s?defs=CHECK_NO_MEDIA">CHECK_NO_MEDIA</a>|<a href="/source/s?defs=CHECK_MEDIA_IS_NOT_BLANK">CHECK_MEDIA_IS_NOT_BLANK</a>)));
<a class="l" name="374">    374 </a>
<a class="l" name="375">    375 </a>	(<b>void</b>) <a href="/source/s?defs=printf">printf</a>(<span class="s">"\n"</span>);
<a class="l" name="376">    376 </a>	(<b>void</b>) <a href="/source/s?defs=setreuid">setreuid</a>(<a href="/source/s?defs=ruid">ruid</a>, <span class="n">0</span>);
<a class="l" name="377">    377 </a>
<a class="l" name="378">    378 </a>	<b>if</b> ((<a href="/source/s?defs=device_type">device_type</a> != <a href="/source/s?defs=DVD_PLUS">DVD_PLUS</a>) &amp;&amp; (<a href="/source/s?defs=device_type">device_type</a> != <a href="/source/s?defs=DVD_PLUS_W">DVD_PLUS_W</a>)) {
<a class="l" name="379">    379 </a>		<a href="/source/s?defs=ensure_media_space">ensure_media_space</a>(<a href="/source/s?defs=total_nblks">total_nblks</a>, <a href="/source/s?defs=end_tno">end_tno</a>);
<a class="hl" name="380">    380 </a>		<a href="/source/s?defs=write_init">write_init</a>(<a href="/source/s?defs=audio_cd">audio_cd</a> ? <a href="/source/s?defs=TRACK_MODE_AUDIO">TRACK_MODE_AUDIO</a> : <a href="/source/s?defs=TRACK_MODE_DATA">TRACK_MODE_DATA</a>);
<a class="l" name="381">    381 </a>	}
<a class="l" name="382">    382 </a>
<a class="l" name="383">    383 </a>	<span class="c">/*
<a class="l" name="384">    384 </a>	 * Simulation writing can't happen on DVD+RW's
<a class="l" name="385">    385 </a>	 * or DVD+R's. According to the MMC spec this
<a class="l" name="386">    386 </a>	 * operation is not supported. So we should
<a class="l" name="387">    387 </a>	 * bail out if the user tries to do a simulation
<a class="l" name="388">    388 </a>	 * write.
<a class="l" name="389">    389 </a>	 */</span>
<a class="hl" name="390">    390 </a>	<b>if</b> (<a href="/source/s?defs=simulation">simulation</a> &amp;&amp; (<a href="/source/s?defs=device_type">device_type</a> == <a href="/source/s?defs=DVD_PLUS_W">DVD_PLUS_W</a> ||
<a class="l" name="391">    391 </a>	    <a href="/source/s?defs=device_type">device_type</a> == <a href="/source/s?defs=DVD_PLUS">DVD_PLUS</a>)) {
<a class="l" name="392">    392 </a>		<a href="/source/s?defs=err_msg">err_msg</a>(<a href="/source/s?defs=gettext">gettext</a>(<span class="s">"Media does not support simulated writing.\n"</span>));
<a class="l" name="393">    393 </a>		<a href="/source/s?defs=exit">exit</a>(<span class="n">1</span>);
<a class="l" name="394">    394 </a>	}
<a class="l" name="395">    395 </a>
<a class="l" name="396">    396 </a>	<b>if</b> (<a href="/source/s?defs=device_type">device_type</a> == <a href="/source/s?defs=DVD_PLUS_W">DVD_PLUS_W</a>) {
<a class="l" name="397">    397 </a>		<span class="c">/*
<a class="l" name="398">    398 </a>		 * DVD+RW requires that we format the media before
<a class="l" name="399">    399 </a>		 * writing.
<a class="hl" name="400">    400 </a>		 */</span>
<a class="l" name="401">    401 </a>		(<b>void</b>) <a href="/source/s?defs=print_n_flush">print_n_flush</a>(<a href="/source/s?defs=gettext">gettext</a>(<span class="s">"Formatting media..."</span>));
<a class="l" name="402">    402 </a>		<b>if</b> (!<a href="/source/s?defs=format_media">format_media</a>(<a href="/source/s?defs=target">target</a>-&gt;<a href="/source/s?defs=d_fd">d_fd</a>)) {
<a class="l" name="403">    403 </a>			(<b>void</b>) <a href="/source/s?defs=printf">printf</a>(<a href="/source/s?defs=gettext">gettext</a>(
<a class="l" name="404">    404 </a>			    <span class="s">"Could not format media\n"</span>));
<a class="l" name="405">    405 </a>			<a href="/source/s?defs=exit">exit</a>(<span class="n">1</span>);
<a class="l" name="406">    406 </a>		} <b>else</b> {
<a class="l" name="407">    407 </a>			<b>int</b> <a href="/source/s?defs=counter">counter</a>;
<a class="l" name="408">    408 </a>			<a href="/source/s?defs=uchar_t">uchar_t</a> *<a href="/source/s?defs=di">di</a>;
<a class="l" name="409">    409 </a>
<a class="hl" name="410">    410 </a>			<span class="c">/* poll until format is done */</span>
<a class="l" name="411">    411 </a>			<a href="/source/s?defs=di">di</a> = (<a href="/source/s?defs=uchar_t">uchar_t</a> *)<a href="/source/s?defs=my_zalloc">my_zalloc</a>(<a href="/source/s?defs=DISC_INFO_BLOCK_SIZE">DISC_INFO_BLOCK_SIZE</a>);
<a class="l" name="412">    412 </a>			(<b>void</b>) <a href="/source/s?defs=sleep">sleep</a>(<span class="n">10</span>);
<a class="l" name="413">    413 </a>			<b>for</b> (<a href="/source/s?defs=counter">counter</a> = <span class="n">0</span>; <a href="/source/s?defs=counter">counter</a> &lt; <span class="n">200</span>; <a href="/source/s?defs=counter">counter</a>++) {
<a class="l" name="414">    414 </a>				<a href="/source/s?defs=ret">ret</a> = <a href="/source/s?defs=read_disc_info">read_disc_info</a>(<a href="/source/s?defs=target">target</a>-&gt;<a href="/source/s?defs=d_fd">d_fd</a>, <a href="/source/s?defs=di">di</a>);
<a class="l" name="415">    415 </a>				<b>if</b> ((<a href="/source/s?defs=SENSE_KEY">SENSE_KEY</a>(<a href="/source/s?defs=rqbuf">rqbuf</a>) == <span class="n">2</span>) &amp;&amp;
<a class="l" name="416">    416 </a>				    (<a href="/source/s?defs=ASC">ASC</a>(<a href="/source/s?defs=rqbuf">rqbuf</a>) == <span class="n">4</span>)) {
<a class="l" name="417">    417 </a>					(<b>void</b>) <a href="/source/s?defs=print_n_flush">print_n_flush</a>(<span class="s">"."</span>);
<a class="l" name="418">    418 </a>					(<b>void</b>) <a href="/source/s?defs=sleep">sleep</a>(<span class="n">5</span>);
<a class="l" name="419">    419 </a>				} <b>else</b> {
<a class="hl" name="420">    420 </a>					<b>break</b>;
<a class="l" name="421">    421 </a>				}
<a class="l" name="422">    422 </a>			}
<a class="l" name="423">    423 </a>		}
<a class="l" name="424">    424 </a>	}
<a class="l" name="425">    425 </a>
<a class="l" name="426">    426 </a>	<span class="c">/* for each track */</span>
<a class="l" name="427">    427 </a>	<b>for</b> (i = <span class="n">0</span>; i &lt; <a href="/source/s?defs=end_tno">end_tno</a>; i++) {
<a class="l" name="428">    428 </a>		<span class="c">/*
<a class="l" name="429">    429 </a>		 * DVD's dont contain tracks and need to be written in DAO
<a class="hl" name="430">    430 </a>		 * mode.
<a class="l" name="431">    431 </a>		 */</span>
<a class="l" name="432">    432 </a>		<b>if</b> (<a href="/source/s?defs=device_type">device_type</a> != <a href="/source/s?defs=CD_RW">CD_RW</a>) {
<a class="l" name="433">    433 </a>			<b>if</b> (<a href="/source/s?defs=end_tno">end_tno</a> &gt; <span class="n">1</span>) {
<a class="l" name="434">    434 </a>				<a href="/source/s?defs=err_msg">err_msg</a>(<a href="/source/s?defs=gettext">gettext</a>(
<a class="l" name="435">    435 </a>				    <span class="s">"Media state is not suitable for this"</span>
<a class="l" name="436">    436 </a>				    <span class="s">" write mode.\n"</span>));
<a class="l" name="437">    437 </a>			}
<a class="l" name="438">    438 </a>			<a href="/source/s?defs=write_mode">write_mode</a> = <a href="/source/s?defs=DAO_MODE">DAO_MODE</a>;
<a class="l" name="439">    439 </a>
<a class="hl" name="440">    440 </a>			<span class="c">/*
<a class="l" name="441">    441 </a>			 * DVD-R(W) and DVD+R needs to have space reserved
<a class="l" name="442">    442 </a>			 * prior to writing.
<a class="l" name="443">    443 </a>			 */</span>
<a class="l" name="444">    444 </a>			<b>if</b> ((<a href="/source/s?defs=device_type">device_type</a> == <a href="/source/s?defs=DVD_MINUS">DVD_MINUS</a>) ||
<a class="l" name="445">    445 </a>			    (<a href="/source/s?defs=device_type">device_type</a> == <a href="/source/s?defs=DVD_PLUS">DVD_PLUS</a>)) {
<a class="l" name="446">    446 </a>				<b>if</b> (!<a href="/source/s?defs=set_reservation">set_reservation</a>(<a href="/source/s?defs=target">target</a>-&gt;<a href="/source/s?defs=d_fd">d_fd</a>,
<a class="l" name="447">    447 </a>				    <a href="/source/s?defs=total_nblks">total_nblks</a> + <span class="n">1</span>)) {
<a class="l" name="448">    448 </a>					(<b>void</b>) <a href="/source/s?defs=printf">printf</a>(<a href="/source/s?defs=gettext">gettext</a>(
<a class="l" name="449">    449 </a>					    <span class="s">"Setting reservation failed\n"</span>));
<a class="hl" name="450">    450 </a>					<a href="/source/s?defs=exit">exit</a>(<span class="n">1</span>);
<a class="l" name="451">    451 </a>				}
<a class="l" name="452">    452 </a>			}
<a class="l" name="453">    453 </a>		}
<a class="l" name="454">    454 </a>
<a class="l" name="455">    455 </a>		<a href="/source/s?defs=write_next_track">write_next_track</a>(<a href="/source/s?defs=audio_cd">audio_cd</a> ? <a href="/source/s?defs=TRACK_MODE_AUDIO">TRACK_MODE_AUDIO</a> : <a href="/source/s?defs=TRACK_MODE_DATA">TRACK_MODE_DATA</a>,
<a class="l" name="456">    456 </a>		    <a href="/source/s?defs=tlist">tlist</a>[i].h);
<a class="l" name="457">    457 </a>
<a class="l" name="458">    458 </a>		<span class="c">/*
<a class="l" name="459">    459 </a>		 * Running in simulation mode and writing several tracks is
<a class="hl" name="460">    460 </a>		 * useless so bail after the first track is done.
<a class="l" name="461">    461 </a>		 */</span>
<a class="l" name="462">    462 </a>
<a class="l" name="463">    463 </a>		<b>if</b> (<a href="/source/s?defs=simulation">simulation</a> &amp;&amp; (<a href="/source/s?defs=end_tno">end_tno</a> != <span class="n">1</span>)) {
<a class="l" name="464">    464 </a>			(<b>void</b>) <a href="/source/s?defs=printf">printf</a>(<a href="/source/s?defs=gettext">gettext</a>(
<a class="l" name="465">    465 </a>			<span class="s">"Simulation mode : skipping remaining tracks\n"</span>));
<a class="l" name="466">    466 </a>			<b>break</b>;
<a class="l" name="467">    467 </a>		}
<a class="l" name="468">    468 </a>	}
<a class="l" name="469">    469 </a>
<a class="hl" name="470">    470 </a>	<a href="/source/s?defs=write_fini">write_fini</a>();
<a class="l" name="471">    471 </a>	<span class="c">/* close the temp file handles */</span>
<a class="l" name="472">    472 </a>	<b>for</b> (i = <span class="n">0</span>; i &lt; <a href="/source/s?defs=end_tno">end_tno</a>; i++)
<a class="l" name="473">    473 </a>		(<a href="/source/s?defs=tlist">tlist</a>[i].h)-&gt;<a href="/source/s?defs=bstr_close">bstr_close</a>(<a href="/source/s?defs=tlist">tlist</a>[i].h);
<a class="l" name="474">    474 </a>	<a href="/source/s?defs=free">free</a>(<a href="/source/s?defs=tlist">tlist</a>);
<a class="l" name="475">    475 </a>	<a href="/source/s?defs=fini_device">fini_device</a>(<a href="/source/s?defs=target">target</a>);
<a class="l" name="476">    476 </a>	<a href="/source/s?defs=exit">exit</a>(<span class="n">0</span>);
<a class="l" name="477">    477 </a>}
<a class="l" name="478">    478 </a></pre></div>
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