write_image.c.htm

光驱cdrom读写源代码,scsi命令解析

<a class="l" name="84">     84 </a>		    <a href="/source/s?defs=image_file">image_file</a> ? <a href="/source/s?defs=image_file">image_file</a> : <span class="s">"stdin"</span>, <a href="/source/s?defs=get_err_str">get_err_str</a>());
<a class="l" name="85">     85 </a>		<a href="/source/s?defs=exit">exit</a>(<span class="n">1</span>);
<a class="l" name="86">     86 </a>	}
<a class="l" name="87">     87 </a>	<a href="/source/s?defs=no_size">no_size</a> = <span class="n">0</span>;
<a class="l" name="88">     88 </a>	<a href="/source/s?defs=ret">ret</a> = h-&gt;<a href="/source/s?defs=bstr_size">bstr_size</a>(h, &amp;<a href="/source/s?defs=size">size</a>);
<a class="l" name="89">     89 </a>	<b>if</b> (<a href="/source/s?defs=ret">ret</a> == <span class="n">0</span>) {
<a class="hl" name="90">     90 </a>		<b>if</b> ((<a href="/source/s?defs=str_errno">str_errno</a> == <a href="/source/s?defs=STR_ERR_NO_REG_FILE">STR_ERR_NO_REG_FILE</a>)) {
<a class="l" name="91">     91 </a>			<a href="/source/s?defs=no_size">no_size</a> = <span class="n">1</span>;
<a class="l" name="92">     92 </a>		} <b>else</b> {
<a class="l" name="93">     93 </a>			<a href="/source/s?defs=err_msg">err_msg</a>(<a href="/source/s?defs=gettext">gettext</a>(<span class="s">"Cannot stat input file: %s\n"</span>),
<a class="l" name="94">     94 </a>			    <a href="/source/s?defs=get_err_str">get_err_str</a>());
<a class="l" name="95">     95 </a>			<a href="/source/s?defs=exit">exit</a>(<span class="n">1</span>);
<a class="l" name="96">     96 </a>		}
<a class="l" name="97">     97 </a>	}
<a class="l" name="98">     98 </a>	<b>if</b> ((<a href="/source/s?defs=no_size">no_size</a> == <span class="n">0</span>) &amp;&amp; (<a href="/source/s?defs=size">size</a> == <span class="n">0</span>)) {
<a class="l" name="99">     99 </a>		<a href="/source/s?defs=err_msg">err_msg</a>(<a href="/source/s?defs=gettext">gettext</a>(<span class="s">"Input size(0) not valid\n"</span>));
<a class="hl" name="100">    100 </a>		<a href="/source/s?defs=exit">exit</a>(<span class="n">1</span>);
<a class="l" name="101">    101 </a>	}
<a class="l" name="102">    102 </a>	<b>if</b> (<a href="/source/s?defs=no_size">no_size</a> == <span class="n">0</span>) {
<a class="l" name="103">    103 </a>		<a href="/source/s?defs=off_t">off_t</a> <a href="/source/s?defs=cap">cap</a>;
<a class="l" name="104">    104 </a>		<b>struct</b> <a href="/source/s?defs=track_info">track_info</a> *<a href="/source/s?defs=ti">ti</a>;
<a class="l" name="105">    105 </a>		<a href="/source/s?defs=uint_t">uint_t</a> <a href="/source/s?defs=bsize">bsize</a>;
<a class="l" name="106">    106 </a>
<a class="l" name="107">    107 </a>		<a href="/source/s?defs=ti">ti</a> = (<b>struct</b> <a href="/source/s?defs=track_info">track_info</a> *)<a href="/source/s?defs=my_zalloc">my_zalloc</a>(<b>sizeof</b> (*<a href="/source/s?defs=ti">ti</a>));
<a class="l" name="108">    108 </a>		<b>if</b> (<a href="/source/s?defs=write_mode">write_mode</a> == <a href="/source/s?defs=TAO_MODE">TAO_MODE</a>)
<a class="l" name="109">    109 </a>			<b>if</b> (!<a href="/source/s?defs=build_track_info">build_track_info</a>(<a href="/source/s?defs=target">target</a>, -<span class="n">1</span>, <a href="/source/s?defs=ti">ti</a>)) {
<a class="hl" name="110">    110 </a>				<a href="/source/s?defs=err_msg">err_msg</a>(
<a class="l" name="111">    111 </a>				    <a href="/source/s?defs=gettext">gettext</a>(<span class="s">"Unable to find out writable "</span>
<a class="l" name="112">    112 </a>				    <span class="s">"address\n"</span>));
<a class="l" name="113">    113 </a>				<a href="/source/s?defs=exit">exit</a>(<span class="n">1</span>);
<a class="l" name="114">    114 </a>			}
<a class="l" name="115">    115 </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="116">    116 </a>			<b>if</b> ((<a href="/source/s?defs=cap">cap</a> = <a href="/source/s?defs=get_last_possible_lba">get_last_possible_lba</a>(<a href="/source/s?defs=target">target</a>)) &lt;= <span class="n">0</span>) {
<a class="l" name="117">    117 </a>				<b>if</b> ((<a href="/source/s?defs=cap">cap</a> = <a href="/source/s?defs=read_format_capacity">read_format_capacity</a>(<a href="/source/s?defs=target">target</a>-&gt;<a href="/source/s?defs=d_fd">d_fd</a>,
<a class="l" name="118">    118 </a>				    &amp;<a href="/source/s?defs=bsize">bsize</a>)) &lt;= <span class="n">0</span>) {
<a class="l" name="119">    119 </a>					<a href="/source/s?defs=err_msg">err_msg</a>(<a href="/source/s?defs=gettext">gettext</a>(<span class="s">"Unable to determine "</span>
<a class="hl" name="120">    120 </a>					    <span class="s">"media capacity.  Defaulting to "</span>
<a class="l" name="121">    121 </a>					    <span class="s">"650 MB (74 minute) disc.\n"</span>));
<a class="l" name="122">    122 </a>					<a href="/source/s?defs=cap">cap</a> = <a href="/source/s?defs=MAX_CD_BLKS">MAX_CD_BLKS</a>;
<a class="l" name="123">    123 </a>				}
<a class="l" name="124">    124 </a>			}
<a class="l" name="125">    125 </a>		} <b>else</b> {
<a class="l" name="126">    126 </a>			<span class="c">/*
<a class="l" name="127">    127 </a>			 * For DVD drives use read_format_capacity to
<a class="l" name="128">    128 </a>			 * find media size, it can be 3.6, 3.9, 4.2,
<a class="l" name="129">    129 </a>			 * 4.7, 9.2
<a class="hl" name="130">    130 </a>			 */</span>
<a class="l" name="131">    131 </a>			<a href="/source/s?defs=cap">cap</a> = <a href="/source/s?defs=read_format_capacity">read_format_capacity</a>(<a href="/source/s?defs=target">target</a>-&gt;<a href="/source/s?defs=d_fd">d_fd</a>,
<a class="l" name="132">    132 </a>			    &amp;<a href="/source/s?defs=bsize">bsize</a>);
<a class="l" name="133">    133 </a>			<span class="c">/*
<a class="l" name="134">    134 </a>			 * Sanity check; Default to 4.7 GB if cap unreasonable
<a class="l" name="135">    135 </a>			 */</span>
<a class="l" name="136">    136 </a>			<b>if</b> (<a href="/source/s?defs=cap">cap</a> &lt; <a href="/source/s?defs=MAX_CD_BLKS">MAX_CD_BLKS</a>)
<a class="l" name="137">    137 </a>				<a href="/source/s?defs=cap">cap</a> = <a href="/source/s?defs=MAX_DVD_BLKS">MAX_DVD_BLKS</a>;
<a class="l" name="138">    138 </a>		}
<a class="l" name="139">    139 </a>
<a class="hl" name="140">    140 </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="141">    141 </a>			<a href="/source/s?defs=cap">cap</a> = (<a href="/source/s?defs=cap">cap</a> + <span class="n">1</span> - <a href="/source/s?defs=ti">ti</a>-&gt;<a href="/source/s?defs=ti_start_address">ti_start_address</a>) * <span class="n">2048</span>;
<a class="l" name="142">    142 </a>		<b>else</b>
<a class="l" name="143">    143 </a>			<a href="/source/s?defs=cap">cap</a> *= <span class="n">2048</span> + <span class="n">1</span>;
<a class="l" name="144">    144 </a>
<a class="l" name="145">    145 </a>		<b>if</b> (<a href="/source/s?defs=size">size</a> &gt; <a href="/source/s?defs=cap">cap</a>) {
<a class="l" name="146">    146 </a>			<a href="/source/s?defs=err_msg">err_msg</a>(<a href="/source/s?defs=gettext">gettext</a>(<span class="s">"Size required (%lld bytes) is greater "</span>
<a class="l" name="147">    147 </a>			    <span class="s">"than available space (%lld bytes).\n"</span>), <a href="/source/s?defs=size">size</a>, <a href="/source/s?defs=cap">cap</a>);
<a class="l" name="148">    148 </a>			<a href="/source/s?defs=exit">exit</a>(<span class="n">1</span>);
<a class="l" name="149">    149 </a>		}
<a class="hl" name="150">    150 </a>
<a class="l" name="151">    151 </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="152">    152 </a>			(<b>void</b>) <a href="/source/s?defs=printf">printf</a>(<a href="/source/s?defs=gettext">gettext</a>(<span class="s">"Preparing to write DVD\n"</span>));
<a class="l" name="153">    153 </a>
<a class="l" name="154">    154 </a>			<span class="c">/* streamed file, we dont know the size to reserve */</span>
<a class="l" name="155">    155 </a>			<b>if</b> (<a href="/source/s?defs=no_size">no_size</a> == <span class="n">1</span>) {
<a class="l" name="156">    156 </a>				<a href="/source/s?defs=size">size</a> = <a href="/source/s?defs=cap">cap</a> - <span class="n">1</span>;
<a class="l" name="157">    157 </a>			}
<a class="l" name="158">    158 </a>
<a class="l" name="159">    159 </a>			<span class="c">/* DAO requires that we reserve the size to write */</span>
<a class="hl" name="160">    160 </a>			<b>if</b> (<a href="/source/s?defs=debug">debug</a>)
<a class="l" name="161">    161 </a>				(<b>void</b>) <a href="/source/s?defs=printf">printf</a>(
<a class="l" name="162">    162 </a>				    <span class="s">"DAO_MODE:reserving track size of = 0x%x\n"</span>,
<a class="l" name="163">    163 </a>				    (<a href="/source/s?defs=uint32_t">uint32_t</a>)(<a href="/source/s?defs=size">size</a>/<span class="n">2048</span>));
<a class="l" name="164">    164 </a>
<a class="l" name="165">    165 </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 href="/source/s?defs=size">size</a>/<span class="n">2048</span>)) {
<a class="l" name="166">    166 </a>				(<b>void</b>) <a href="/source/s?defs=printf">printf</a>(<a href="/source/s?defs=gettext">gettext</a>(
<a class="l" name="167">    167 </a>				    <span class="s">"Setting reservation failed\n"</span>));
<a class="l" name="168">    168 </a>				<a href="/source/s?defs=exit">exit</a>(<span class="n">1</span>);
<a class="l" name="169">    169 </a>			}
<a class="hl" name="170">    170 </a>		} <b>else</b> <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="171">    171 </a>			<span class="c">/*
<a class="l" name="172">    172 </a>			 * DVD+RW requires that we format the media before
<a class="l" name="173">    173 </a>			 * writing.
<a class="l" name="174">    174 </a>			 */</span>
<a class="l" name="175">    175 </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="176">    176 </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="177">    177 </a>				(<b>void</b>) <a href="/source/s?defs=printf">printf</a>(<a href="/source/s?defs=gettext">gettext</a>(
<a class="l" name="178">    178 </a>				    <span class="s">"Could not format media\n"</span>));
<a class="l" name="179">    179 </a>				<a href="/source/s?defs=exit">exit</a>(<span class="n">1</span>);
<a class="hl" name="180">    180 </a>			} <b>else</b> {
<a class="l" name="181">    181 </a>				<b>int</b> <a href="/source/s?defs=counter">counter</a>;
<a class="l" name="182">    182 </a>				<a href="/source/s?defs=uchar_t">uchar_t</a> *<a href="/source/s?defs=di">di</a>;
<a class="l" name="183">    183 </a>
<a class="l" name="184">    184 </a>				<span class="c">/* poll until format is done */</span>
<a class="l" name="185">    185 </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="186">    186 </a>				(<b>void</b>) <a href="/source/s?defs=sleep">sleep</a>(<span class="n">10</span>);
<a class="l" name="187">    187 </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="188">    188 </a>
<a class="l" name="189">    189 </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="hl" name="190">    190 </a>
<a class="l" name="191">    191 </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="192">    192 </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="193">    193 </a>					(<b>void</b>) <a href="/source/s?defs=print_n_flush">print_n_flush</a>(<span class="s">"."</span>);
<a class="l" name="194">    194 </a>					(<b>void</b>) <a href="/source/s?defs=sleep">sleep</a>(<span class="n">5</span>);
<a class="l" name="195">    195 </a>				} <b>else</b> {
<a class="l" name="196">    196 </a>					<b>break</b>;
<a class="l" name="197">    197 </a>					}
<a class="l" name="198">    198 </a>				}
<a class="l" name="199">    199 </a>			}
<a class="hl" name="200">    200 </a>
<a class="l" name="201">    201 </a>			(<b>void</b>) <a href="/source/s?defs=printf">printf</a>(<a href="/source/s?defs=gettext">gettext</a>(<span class="s">"done\n"</span>));
<a class="l" name="202">    202 </a>		}
<a class="l" name="203">    203 </a>
<a class="l" name="204">    204 </a>
<a class="l" name="205">    205 </a>		<a href="/source/s?defs=free">free</a>(<a href="/source/s?defs=ti">ti</a>);
<a class="l" name="206">    206 </a>	}
<a class="l" name="207">    207 </a>
<a class="l" name="208">    208 </a>	<a href="/source/s?defs=write_next_track">write_next_track</a>(<a href="/source/s?defs=TRACK_MODE_DATA">TRACK_MODE_DATA</a>, h);
<a class="l" name="209">    209 </a>
<a class="hl" name="210">    210 </a>	h-&gt;<a href="/source/s?defs=bstr_close">bstr_close</a>(h);
<a class="l" name="211">    211 </a>	<a href="/source/s?defs=write_fini">write_fini</a>();
<a class="l" name="212">    212 </a>	<a href="/source/s?defs=fini_device">fini_device</a>(<a href="/source/s?defs=target">target</a>);
<a class="l" name="213">    213 </a>	<a href="/source/s?defs=exit">exit</a>(<span class="n">0</span>);
<a class="l" name="214">    214 </a>}
<a class="l" name="215">    215 </a></pre></div>
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