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ZealOS/docs/Demo/Disk/DiskRaw.CC.html

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<pre style="font-family:monospace;font-size:12pt">
<a name="l1"></a><span class=cF1>U0</span><span class=cF0> RawAccess(</span><span class=cF9>I64</span><span class=cF0> drv_let=</span><span class=cFE>0</span><span class=cF0>)
<a name="l2"></a>{
<a name="l3"></a> </span><span class=cF9>CDrive</span><span class=cF0> *drive = </span><span class=cF5>Letter2Drive</span><span class=cF0>(drv_let);
<a name="l4"></a> </span><span class=cF9>CBlkDev</span><span class=cF0> *bd = </span><span class=cF5>Letter2BlkDev</span><span class=cF0>(drv_let);
<a name="l5"></a> </span><span class=cF9>I64</span><span class=cF0> blk, old_offset, old_size;
<a name="l6"></a> </span><span class=cF1>U8</span><span class=cF0> *buf = </span><span class=cF5>MAlloc</span><span class=cF0>(</span><span class=cF3>BLK_SIZE</span><span class=cF0>);
<a name="l7"></a>
<a name="l8"></a> </span><span class=cF5>DriveRep</span><span class=cF0>;
<a name="l9"></a> </span><span class=cF5>PressAKey</span><span class=cF0>;
<a name="l10"></a>
<a name="l11"></a> </span><span class=cF5>ClassRep</span><span class=cF0>(drive);
<a name="l12"></a> </span><span class=cF5>PressAKey</span><span class=cF0>;
<a name="l13"></a>
<a name="l14"></a> </span><span class=cF5>ClassRep</span><span class=cF0>(bd);
<a name="l15"></a> </span><span class=cF5>PressAKey</span><span class=cF0>;
<a name="l16"></a>
<a name="l17"></a> </span><span class=cF2>//Temporarily change partition range to full device.</span><span class=cF0>
<a name="l18"></a> </span><span class=cF2>//Normally, you are limited to just your partition.</span><span class=cF0>
<a name="l19"></a> </span><span class=cF2>//This is obviously dangerous!</span><span class=cF0>
<a name="l20"></a> old_offset =drive-&gt;drv_offset;
<a name="l21"></a> old_size =drive-&gt;size;
<a name="l22"></a> drive-&gt;drv_offset = </span><span class=cFE>0</span><span class=cF0>;
<a name="l23"></a> drive-&gt;size = bd-&gt;max_blk + </span><span class=cFE>1</span><span class=cF0>;
<a name="l24"></a>
<a name="l25"></a> </span><span class=cF1>try</span><span class=cF0>
<a name="l26"></a> </span><span class=cF7>{</span><span class=cF0>
<a name="l27"></a> blk = </span><span class=cF5>I64Get</span><span class=cF0>(</span><span class=cF6>&quot;Blk to Read: &quot;</span><span class=cF0>, old_offset, </span><span class=cFE>0</span><span class=cF0>, bd-&gt;max_blk);
<a name="l28"></a> </span><span class=cF5>BlkRead</span><span class=cF0>(drive, buf, blk, </span><span class=cFE>1</span><span class=cF0>);
<a name="l29"></a> </span><span class=cF5>D</span><span class=cF0>(buf, </span><span class=cF3>BLK_SIZE</span><span class=cF0>);
<a name="l30"></a> </span><span class=cF7>}</span><span class=cF0>
<a name="l31"></a> </span><span class=cF1>catch</span><span class=cF0>
<a name="l32"></a> </span><span class=cF5>PutExcept</span><span class=cF0>;
<a name="l33"></a>
<a name="l34"></a> drive-&gt;drv_offset = old_offset;
<a name="l35"></a> drive-&gt;size = old_size;
<a name="l36"></a>
<a name="l37"></a> </span><span class=cF5>Free</span><span class=cF0>(buf);
<a name="l38"></a>}
<a name="l39"></a>
<a name="l40"></a>RawAccess;
<a name="l41"></a>
<a name="l42"></a></span><span class=cF2>//See </span><a href="https://tomawezome.github.io/ZealOS/Kernel/BlkDev/DiskBlk.html#l37"><span class=cF4>BlkRead</span></a><span class=cF2>(), </span><a href="https://tomawezome.github.io/ZealOS/Kernel/BlkDev/DiskBlk.html#l87"><span class=cF4>BlkWrite</span></a><span class=cF2>(), </span><a href="https://tomawezome.github.io/ZealOS/Kernel/BlkDev/DiskDrive.html#l1"><span class=cF4>DriveLock</span></a><span class=cF2>(), </span><a href="https://tomawezome.github.io/ZealOS/Kernel/BlkDev/DiskDrive.html#l16"><span class=cF4>DriveUnlock</span></a><span class=cF2>()</span><span class=cF0>
<a name="l43"></a></span><span class=cF2>//</span><a href="https://tomawezome.github.io/ZealOS/System/BlkDev/ZDiskA.html#l2"><span class=cF4>DBlk</span></a><span class=cF2>(), </span><a href="https://tomawezome.github.io/ZealOS/System/BlkDev/ZDiskA.html#l24"><span class=cF4>DClus</span></a><span class=cF2>(), </span><a href="https://tomawezome.github.io/ZealOS/Kernel/BlkDev/DiskBlkDev.html#l1"><span class=cF4>BlkDevLock</span></a><span class=cF2>() and </span><a href="https://tomawezome.github.io/ZealOS/Kernel/BlkDev/DiskBlkDev.html#l20"><span class=cF4>BlkDevUnlock</span></a><span class=cF2>().</span><span class=cF0>
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