bstream.c.htm

光驱cdrom读写源代码,scsi命令解析

<a class="l" name="57">     57 </a>	<b>case</b> <a href="/source/s?defs=STR_ERR_NO_READ_STDIN">STR_ERR_NO_READ_STDIN</a>:
<a class="l" name="58">     58 </a>		<b>return</b> (<a href="/source/s?defs=gettext">gettext</a>(<span class="s">"Stdin not open for reading"</span>));
<a class="l" name="59">     59 </a>	<b>case</b> <a href="/source/s?defs=STR_ERR_AU_READ_ERR">STR_ERR_AU_READ_ERR</a>:
<a class="hl" name="60">     60 </a>		<b>return</b> (<a href="/source/s?defs=gettext">gettext</a>(<span class="s">"Unable to read au header"</span>));
<a class="l" name="61">     61 </a>	<b>case</b> <a href="/source/s?defs=STR_ERR_AU_UNSUPPORTED_FORMAT">STR_ERR_AU_UNSUPPORTED_FORMAT</a>:
<a class="l" name="62">     62 </a>		<b>return</b> (<a href="/source/s?defs=gettext">gettext</a>(<span class="s">"Unsupported au format"</span>));
<a class="l" name="63">     63 </a>	<b>case</b> <a href="/source/s?defs=STR_ERR_AU_BAD_HEADER">STR_ERR_AU_BAD_HEADER</a>:
<a class="l" name="64">     64 </a>		<b>return</b> (<a href="/source/s?defs=gettext">gettext</a>(<span class="s">"Bad au header"</span>));
<a class="l" name="65">     65 </a>	<b>case</b> <a href="/source/s?defs=STR_ERR_WAV_READ_ERR">STR_ERR_WAV_READ_ERR</a>:
<a class="l" name="66">     66 </a>		<b>return</b> (<a href="/source/s?defs=gettext">gettext</a>(<span class="s">"Unable to read wav header"</span>));
<a class="l" name="67">     67 </a>	<b>case</b> <a href="/source/s?defs=STR_ERR_WAV_UNSUPPORTED_FORMAT">STR_ERR_WAV_UNSUPPORTED_FORMAT</a>:
<a class="l" name="68">     68 </a>		<b>return</b> (<a href="/source/s?defs=gettext">gettext</a>(<span class="s">"Unsupported wav format"</span>));
<a class="l" name="69">     69 </a>	<b>case</b> <a href="/source/s?defs=STR_ERR_WAV_BAD_HEADER">STR_ERR_WAV_BAD_HEADER</a>:
<a class="hl" name="70">     70 </a>		<b>return</b> (<a href="/source/s?defs=gettext">gettext</a>(<span class="s">"Bad wav header"</span>));
<a class="l" name="71">     71 </a>	<b>case</b> <a href="/source/s?defs=STR_ERR_ISO_READ_ERR">STR_ERR_ISO_READ_ERR</a>:
<a class="l" name="72">     72 </a>		<b>return</b> (<a href="/source/s?defs=gettext">gettext</a>(<span class="s">"Unable to read ISO header"</span>));
<a class="l" name="73">     73 </a>	<b>case</b> <a href="/source/s?defs=STR_ERR_ISO_BAD_HEADER">STR_ERR_ISO_BAD_HEADER</a>:
<a class="l" name="74">     74 </a>		<b>return</b> (<a href="/source/s?defs=gettext">gettext</a>(<span class="s">"Invalid ISO header or not an ISO"</span>));
<a class="l" name="75">     75 </a>	<b>default</b>:
<a class="l" name="76">     76 </a>		<b>return</b> (<a href="/source/s?defs=gettext">gettext</a>(<span class="s">"unknown error"</span>));
<a class="l" name="77">     77 </a>	}
<a class="l" name="78">     78 </a>}
<a class="l" name="79">     79 </a>
<a class="hl" name="80">     80 </a><b>static</b> <b>int</b>
<a class="l" name="81">     81 </a><a href="/source/s?defs=file_stream_size">file_stream_size</a>(<a href="/source/s?defs=bstreamhandle">bstreamhandle</a> h, <a href="/source/s?defs=off_t">off_t</a> *<a href="/source/s?defs=size">size</a>)
<a class="l" name="82">     82 </a>{
<a class="l" name="83">     83 </a>	<b>struct</b> <a href="/source/s?defs=stat">stat</a> <a href="/source/s?defs=st">st</a>;
<a class="l" name="84">     84 </a>
<a class="l" name="85">     85 </a>	<a href="/source/s?defs=str_errno">str_errno</a> = <span class="n">0</span>;
<a class="l" name="86">     86 </a>
<a class="l" name="87">     87 </a>	<b>if</b> (<a href="/source/s?defs=fstat">fstat</a>(h-&gt;<a href="/source/s?defs=bstr_fd">bstr_fd</a>, &amp;<a href="/source/s?defs=st">st</a>) &lt; <span class="n">0</span>)
<a class="l" name="88">     88 </a>		<b>return</b> (<span class="n">0</span>);
<a class="l" name="89">     89 </a>	<b>if</b> ((<a href="/source/s?defs=st">st</a>.<a href="/source/s?defs=st_mode">st_mode</a> &amp; <a href="/source/s?defs=S_IFMT">S_IFMT</a>) != <a href="/source/s?defs=S_IFREG">S_IFREG</a>) {
<a class="hl" name="90">     90 </a>		<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>		<b>return</b> (<span class="n">0</span>);
<a class="l" name="92">     92 </a>	}
<a class="l" name="93">     93 </a>	*<a href="/source/s?defs=size">size</a> = <a href="/source/s?defs=st">st</a>.<a href="/source/s?defs=st_size">st_size</a>;
<a class="l" name="94">     94 </a>	<b>return</b> (<span class="n">1</span>);
<a class="l" name="95">     95 </a>}
<a class="l" name="96">     96 </a>
<a class="l" name="97">     97 </a><b>static</b> <b>int</b>
<a class="l" name="98">     98 </a><a href="/source/s?defs=audio_stream_size">audio_stream_size</a>(<a href="/source/s?defs=bstreamhandle">bstreamhandle</a> h, <a href="/source/s?defs=off_t">off_t</a> *<a href="/source/s?defs=size">size</a>)
<a class="l" name="99">     99 </a>{
<a class="hl" name="100">    100 </a>	<a href="/source/s?defs=str_errno">str_errno</a> = <span class="n">0</span>;
<a class="l" name="101">    101 </a>	*<a href="/source/s?defs=size">size</a> = (<a href="/source/s?defs=off_t">off_t</a>)(<a href="/source/s?defs=uintptr_t">uintptr_t</a>)(h-&gt;<a href="/source/s?defs=bstr_private">bstr_private</a>);
<a class="l" name="102">    102 </a>	<b>return</b> (<span class="n">1</span>);
<a class="l" name="103">    103 </a>}
<a class="l" name="104">    104 </a>
<a class="l" name="105">    105 </a><b>static</b> <b>int</b>
<a class="l" name="106">    106 </a><a href="/source/s?defs=file_stream_read">file_stream_read</a>(<a href="/source/s?defs=bstreamhandle">bstreamhandle</a> h, <a href="/source/s?defs=uchar_t">uchar_t</a> *<a href="/source/s?defs=buf">buf</a>, <a href="/source/s?defs=off_t">off_t</a> <a href="/source/s?defs=size">size</a>)
<a class="l" name="107">    107 </a>{
<a class="l" name="108">    108 </a>	<a href="/source/s?defs=str_errno">str_errno</a> = <span class="n">0</span>;
<a class="l" name="109">    109 </a>	<b>return</b> (<a href="/source/s?defs=read">read</a>(h-&gt;<a href="/source/s?defs=bstr_fd">bstr_fd</a>, <a href="/source/s?defs=buf">buf</a>, <a href="/source/s?defs=size">size</a>));
<a class="hl" name="110">    110 </a>}
<a class="l" name="111">    111 </a>
<a class="l" name="112">    112 </a><b>static</b> <b>int</b>
<a class="l" name="113">    113 </a><a href="/source/s?defs=file_stream_write">file_stream_write</a>(<a href="/source/s?defs=bstreamhandle">bstreamhandle</a> h, <a href="/source/s?defs=uchar_t">uchar_t</a> *<a href="/source/s?defs=buf">buf</a>, <a href="/source/s?defs=off_t">off_t</a> <a href="/source/s?defs=size">size</a>)
<a class="l" name="114">    114 </a>{
<a class="l" name="115">    115 </a>	<a href="/source/s?defs=str_errno">str_errno</a> = <span class="n">0</span>;
<a class="l" name="116">    116 </a>	<b>return</b> (<a href="/source/s?defs=write">write</a>(h-&gt;<a href="/source/s?defs=bstr_fd">bstr_fd</a>, <a href="/source/s?defs=buf">buf</a>, <a href="/source/s?defs=size">size</a>));
<a class="l" name="117">    117 </a>}
<a class="l" name="118">    118 </a>
<a class="l" name="119">    119 </a><span class="c">/*
<a class="hl" name="120">    120 </a> * with reverse byteorder
<a class="l" name="121">    121 </a> */</span>
<a class="l" name="122">    122 </a><b>static</b> <b>int</b>
<a class="l" name="123">    123 </a><a href="/source/s?defs=file_stream_read_wrbo">file_stream_read_wrbo</a>(<a href="/source/s?defs=bstreamhandle">bstreamhandle</a> h, <a href="/source/s?defs=uchar_t">uchar_t</a> *<a href="/source/s?defs=buf">buf</a>, <a href="/source/s?defs=off_t">off_t</a> <a href="/source/s?defs=size">size</a>)
<a class="l" name="124">    124 </a>{
<a class="l" name="125">    125 </a>	<b>int</b> <a href="/source/s?defs=cnt">cnt</a>;
<a class="l" name="126">    126 </a>
<a class="l" name="127">    127 </a>	<a href="/source/s?defs=str_errno">str_errno</a> = <span class="n">0</span>;
<a class="l" name="128">    128 </a>	<a href="/source/s?defs=cnt">cnt</a> = <a href="/source/s?defs=read">read</a>(h-&gt;<a href="/source/s?defs=bstr_fd">bstr_fd</a>, <a href="/source/s?defs=buf">buf</a>, <a href="/source/s?defs=size">size</a>);
<a class="l" name="129">    129 </a>	<b>if</b> (<a href="/source/s?defs=cnt">cnt</a> &gt; <span class="n">0</span>) {
<a class="hl" name="130">    130 </a>		<b>int</b> i;
<a class="l" name="131">    131 </a>		<a href="/source/s?defs=uchar_t">uchar_t</a> <a href="/source/s?defs=ch">ch</a>;
<a class="l" name="132">    132 </a>
<a class="l" name="133">    133 </a>		<b>for</b> (i = <span class="n">0</span>; i &lt; <a href="/source/s?defs=cnt">cnt</a>; i += <span class="n">2</span>) {
<a class="l" name="134">    134 </a>			<a href="/source/s?defs=ch">ch</a> = <a href="/source/s?defs=buf">buf</a>[i];
<a class="l" name="135">    135 </a>			<a href="/source/s?defs=buf">buf</a>[i] = <a href="/source/s?defs=buf">buf</a>[i+<span class="n">1</span>];
<a class="l" name="136">    136 </a>			<a href="/source/s?defs=buf">buf</a>[i+<span class="n">1</span>] = <a href="/source/s?defs=ch">ch</a>;
<a class="l" name="137">    137 </a>		}
<a class="l" name="138">    138 </a>	}
<a class="l" name="139">    139 </a>	<b>return</b> (<a href="/source/s?defs=cnt">cnt</a>);
<a class="hl" name="140">    140 </a>}
<a class="l" name="141">    141 </a>
<a class="l" name="142">    142 </a><span class="c">/*
<a class="l" name="143">    143 </a> * This will change the byteorder in the buffer but that is fine with us.
<a class="l" name="144">    144 </a> */</span>
<a class="l" name="145">    145 </a><b>static</b> <b>int</b>
<a class="l" name="146">    146 </a><a href="/source/s?defs=file_stream_write_wrbo">file_stream_write_wrbo</a>(<a href="/source/s?defs=bstreamhandle">bstreamhandle</a> h, <a href="/source/s?defs=uchar_t">uchar_t</a> *<a href="/source/s?defs=buf">buf</a>, <a href="/source/s?defs=off_t">off_t</a> <a href="/source/s?defs=size">size</a>)
<a class="l" name="147">    147 </a>{
<a class="l" name="148">    148 </a>	<b>int</b> i;
<a class="l" name="149">    149 </a>	<a href="/source/s?defs=uchar_t">uchar_t</a> <a href="/source/s?defs=ch">ch</a>;
<a class="hl" name="150">    150 </a>
<a class="l" name="151">    151 </a>	<a href="/source/s?defs=str_errno">str_errno</a> = <span class="n">0</span>;
<a class="l" name="152">    152 </a>	<b>if</b> (<a href="/source/s?defs=size">size</a> &gt; <span class="n">0</span>) {
<a class="l" name="153">    153 </a>		<b>for</b> (i = <span class="n">0</span>; i &lt; <a href="/source/s?defs=size">size</a>; i += <span class="n">2</span>) {
<a class="l" name="154">    154 </a>			<a href="/source/s?defs=ch">ch</a> = <a href="/source/s?defs=buf">buf</a>[i];
<a class="l" name="155">    155 </a>			<a href="/source/s?defs=buf">buf</a>[i] = <a href="/source/s?defs=buf">buf</a>[i+<span class="n">1</span>];
<a class="l" name="156">    156 </a>			<a href="/source/s?defs=buf">buf</a>[i+<span class="n">1</span>] = <a href="/source/s?defs=ch">ch</a>;
<a class="l" name="157">    157 </a>		}
<a class="l" name="158">    158 </a>	}
<a class="l" name="159">    159 </a>	<b>return</b> (<a href="/source/s?defs=write">write</a>(h-&gt;<a href="/source/s?defs=bstr_fd">bstr_fd</a>, <a href="/source/s?defs=buf">buf</a>, <a href="/source/s?defs=size">size</a>));
<a class="hl" name="160">    160 </a>}
<a class="l" name="161">    161 </a>
<a class="l" name="162">    162 </a><b>static</b> <b>int</b>
<a class="l" name="163">    163 </a><a href="/source/s?defs=file_stream_close">file_stream_close</a>(<a href="/source/s?defs=bstreamhandle">bstreamhandle</a> h)
<a class="l" name="164">    164 </a>{
<a class="l" name="165">    165 </a>	<b>int</b> <a href="/source/s?defs=fd">fd</a>;
<a class="l" name="166">    166 </a>
<a class="l" name="167">    167 </a>	<a href="/source/s?defs=str_errno">str_errno</a> = <span class="n">0</span>;
<a class="l" name="168">    168 </a>	<a href="/source/s?defs=fd">fd</a> = h-&gt;<a href="/source/s?defs=bstr_fd">bstr_fd</a>;
<a class="l" name="169">    169 </a>	<a href="/source/s?defs=free">free</a>(h);
<a class="hl" name="170">    170 </a>	<b>return</b> (<a href="/source/s?defs=close">close</a>(<a href="/source/s?defs=fd">fd</a>));
<a class="l" name="171">    171 </a>}
<a class="l" name="172">    172 </a>
<a class="l" name="173">    173 </a><b>static</b> <b>int</b>
<a class="l" name="174">    174 </a><a href="/source/s?defs=stdin_stream_close">stdin_stream_close</a>(<a href="/source/s?defs=bstreamhandle">bstreamhandle</a> h)
<a class="l" name="175">    175 </a>{
<a class="l" name="176">    176 </a>	<a href="/source/s?defs=str_errno">str_errno</a> = <span class="n">0</span>;
<a class="l" name="177">    177 </a>	<a href="/source/s?defs=free">free</a>(h);
<a class="l" name="178">    178 </a>	<b>return</b> (<span class="n">0</span>);
<a class="l" name="179">    179 </a>}
<a class="hl" name="180">    180 </a>