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TomAwezome d0cafb0198 Allow OS Upgrade feature on VMs. 
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<pre style="font-family:monospace;font-size:12pt">
<a name="l1"></a><span class=cF2>//See </span><a href="https://tomawezome.github.io/ZealOS/Doc/Install.DD.html#l1"><span class=cF4>Install Documentation</span></a><span class=cF2>.</span><span class=cF0>
<a name="l2"></a></span><span class=cF2>//Study the account examples: </span><a href="https://tomawezome.github.io/ZealOS/Demo/AcctExample/TOS/TOSConfig.CC.html#l1"><span class=cF4>Config Strs</span></a><span class=cF2>, </span><a href="https://tomawezome.github.io/ZealOS/Demo/AcctExample/TOS/TOSDistro.CC.html#l1"><span class=cF4>Update Funs</span></a><span class=cF0>
<a name="l3"></a>
<a name="l4"></a>#</span><span class=cF1>include</span><span class=cF0> </span><span class=cF6>&quot;BootMHD&quot;</span><span class=cF0>
<a name="l5"></a>#</span><span class=cF1>include</span><span class=cF0> </span><span class=cF6>&quot;BootMHD2&quot;</span><span class=cF0>
<a name="l6"></a>
<a name="l7"></a>#</span><span class=cF1>help_index</span><span class=cF0> </span><span class=cF6>&quot;Install&quot;</span><span class=cF0>
<a name="l8"></a>
<a name="l9"></a>#</span><span class=cF1>define</span><span class=cF0> </span><span class=cF3>BOOT_DIR</span><span class=cF0> </span><span class=cF6>&quot;/0000Boot&quot;</span><span class=cF0>
<a name="l10"></a></span><span class=cF2>//Stage 2 of master boot loader</span><span class=cF0>
<a name="l11"></a>#</span><span class=cF1>define</span><span class=cF0> </span><span class=cF3>BOOT_DIR_BOOTMHD2_BIN_C</span><span class=cF0> </span><span class=cF3>BOOT_DIR</span><span class=cF0> </span><span class=cF6>&quot;/BootMHD2.BIN.C&quot;</span><span class=cF0>
<a name="l12"></a></span><span class=cF2>//Old master boot record</span><span class=cF0>
<a name="l13"></a>#</span><span class=cF1>define</span><span class=cF0> </span><span class=cF3>BOOT_DIR_OLDMBR_BIN_C</span><span class=cF0> </span><span class=cF3>BOOT_DIR</span><span class=cF0> </span><span class=cF6>&quot;/OldMBR.BIN.C&quot;</span><span class=cF0>
<a name="l14"></a>
<a name="l15"></a></span><span class=cF1>public</span><span class=cF0> </span><span class=cF1>U0</span><span class=cF0> </span><span class=cF5>BootMHDOldRead</span><span class=cF0>(</span><span class=cF1>U8</span><span class=cF0> src_drive, </span><span class=cF1>U8</span><span class=cF0> dst_drive)
<a name="l16"></a>{</span><span class=cF2>//Reads MBR from disk drive containing src partition.</span><span class=cF0>
<a name="l17"></a></span><span class=cF2>//Writes a single blk file to dst BOOT_DIR.</span><span class=cF0>
<a name="l18"></a> </span><span class=cF9>CBlkDev</span><span class=cF0> *bd = </span><span class=cF5>Letter2BlkDev</span><span class=cF0>(src_drive);
<a name="l19"></a> </span><span class=cF9>CDrive</span><span class=cF0> *drive;
<a name="l20"></a> </span><span class=cF9>CMasterBoot</span><span class=cF0> mbr;
<a name="l21"></a>
<a name="l22"></a> </span><span class=cF5>Drive</span><span class=cF0>(dst_drive);
<a name="l23"></a> drive = </span><span class=cF5>Fs</span><span class=cF0>-&gt;cur_dv;
<a name="l24"></a>
<a name="l25"></a> </span><span class=cF1>if</span><span class=cF0> (drive-&gt;fs_type != </span><span class=cF3>FSt_REDSEA</span><span class=cF0> &amp;&amp; drive-&gt;fs_type != </span><span class=cF3>FSt_FAT32</span><span class=cF0>)
<a name="l26"></a> </span><span class=cF5>PrintErr</span><span class=cF0>(</span><span class=cF6>&quot;File System Not Supported\n&quot;</span><span class=cF0>);
<a name="l27"></a> </span><span class=cF1>else</span><span class=cF0>
<a name="l28"></a> </span><span class=cF7>{</span><span class=cF0>
<a name="l29"></a></span><span class=cF2>//Bypass partition bounds-checking</span><span class=cF0>
<a name="l30"></a> </span><span class=cF5>BlkDevLock</span><span class=cF0>(bd);
<a name="l31"></a> </span><span class=cF5>AHCIAtaBlksRead</span><span class=cF0>(bd, &amp;mbr, </span><span class=cFE>0</span><span class=cF0>, </span><span class=cFE>1</span><span class=cF0>);
<a name="l32"></a> </span><span class=cF5>BlkDevUnlock</span><span class=cF0>(bd);
<a name="l33"></a>
<a name="l34"></a> </span><span class=cF5>Drive</span><span class=cF0>(dst_drive);
<a name="l35"></a> </span><span class=cF5>DirMake</span><span class=cF0>(</span><span class=cF3>BOOT_DIR</span><span class=cF0>);
<a name="l36"></a> </span><span class=cF5>FileWrite</span><span class=cF0>(</span><span class=cF3>BOOT_DIR_OLDMBR_BIN_C</span><span class=cF0>, &amp;mbr, </span><span class=cF3>BLK_SIZE</span><span class=cF0>);
<a name="l37"></a> </span><span class=cF7>}</span><span class=cF0>
<a name="l38"></a>}
<a name="l39"></a>
<a name="l40"></a></span><span class=cF1>public</span><span class=cF0> </span><span class=cF1>U0</span><span class=cF0> </span><span class=cF5>BootMHDOldWrite</span><span class=cF0>(</span><span class=cF1>U8</span><span class=cF0> src_drive, </span><span class=cF1>U8</span><span class=cF0> dst_drive)
<a name="l41"></a>{</span><span class=cF2>//Reads OldMBR from src drive BOOT_DIR.</span><span class=cF0>
<a name="l42"></a></span><span class=cF2>//writes it to the MBR of the drive with dst partition.</span><span class=cF0>
<a name="l43"></a> </span><span class=cF9>CBlkDev</span><span class=cF0> *bd = </span><span class=cF5>Letter2BlkDev</span><span class=cF0>(dst_drive);
<a name="l44"></a> </span><span class=cF9>CMasterBoot</span><span class=cF0> *mbr;
<a name="l45"></a>
<a name="l46"></a> </span><span class=cF5>Drive</span><span class=cF0>(src_drive);
<a name="l47"></a>
<a name="l48"></a> </span><span class=cF1>if</span><span class=cF0> (mbr = </span><span class=cF5>FileRead</span><span class=cF7>(</span><span class=cF3>BOOT_DIR_OLDMBR_BIN_C</span><span class=cF7>)</span><span class=cF0>)
<a name="l49"></a> </span><span class=cF7>{</span><span class=cF0>
<a name="l50"></a></span><span class=cF2>//Bypass partition bounds-checking</span><span class=cF0>
<a name="l51"></a> </span><span class=cF5>BlkDevLock</span><span class=cF0>(bd);
<a name="l52"></a> </span><span class=cF5>AHCIAtaBlksWrite</span><span class=cF0>(bd, mbr, </span><span class=cFE>0</span><span class=cF0>, </span><span class=cFE>1</span><span class=cF0>);
<a name="l53"></a> </span><span class=cF5>BlkDevUnlock</span><span class=cF0>(bd);
<a name="l54"></a> </span><span class=cF7>}</span><span class=cF0>
<a name="l55"></a> </span><span class=cF5>Free</span><span class=cF0>(mbr);
<a name="l56"></a>}
<a name="l57"></a>
<a name="l58"></a></span><span class=cF1>public</span><span class=cF0> </span><span class=cF1>U0</span><span class=cF0> </span><span class=cF5>BootMHDZero</span><span class=cF0>(</span><span class=cF1>U8</span><span class=cF0> dst_drive)
<a name="l59"></a>{</span><span class=cF2>//Set MBR of disk with dst partition to zero.</span><span class=cF0>
<a name="l60"></a>
<a name="l61"></a> </span><span class=cF2>//This is dangerous!!</span><span class=cF0>
<a name="l62"></a> </span><span class=cF2>//The ZealOS partitioner doesn't play well</span><span class=cF0>
<a name="l63"></a> </span><span class=cF2>//with other operating systems at this time and you need</span><span class=cF0>
<a name="l64"></a> </span><span class=cF2>//to do this on a drive partitioned by ZealOS</span><span class=cF0>
<a name="l65"></a> </span><span class=cF2>//if you wish to partition with another operating system.</span><span class=cF0>
<a name="l66"></a> </span><span class=cF9>CBlkDev</span><span class=cF0> *bd = </span><span class=cF5>Letter2BlkDev</span><span class=cF0>(dst_drive);
<a name="l67"></a> </span><span class=cF9>CMasterBoot</span><span class=cF0> mbr;
<a name="l68"></a>
<a name="l69"></a> </span><span class=cF5>MemSet</span><span class=cF0>(&amp;mbr, </span><span class=cFE>0</span><span class=cF0>, </span><span class=cF3>BLK_SIZE</span><span class=cF0>);
<a name="l70"></a></span><span class=cF2>//Bypass partition bounds-checking</span><span class=cF0>
<a name="l71"></a> </span><span class=cF5>BlkDevLock</span><span class=cF0>(bd);
<a name="l72"></a> </span><span class=cF5>AHCIAtaBlksWrite</span><span class=cF0>(bd, &amp;mbr, </span><span class=cFE>0</span><span class=cF0>, </span><span class=cFE>1</span><span class=cF0>);
<a name="l73"></a> </span><span class=cF5>BlkDevUnlock</span><span class=cF0>(bd);
<a name="l74"></a>}
<a name="l75"></a>
<a name="l76"></a></span><span class=cF1>public</span><span class=cF0> </span><span class=cF1>Bool</span><span class=cF0> </span><span class=cF5>BootMHDIns</span><span class=cF0>(</span><span class=cF1>U8</span><span class=cF0> drv_let, </span><span class=cF1>U8</span><span class=cF0> *drv_list=</span><span class=cF3>NULL</span><span class=cF0>)
<a name="l77"></a>{</span><span class=cF2>//Create new MBR on the disk that has drv_let as a partition.</span><span class=cF0>
<a name="l78"></a></span><span class=cF2>//Puts stage 2 in BOOT_DIR of drv_let.</span><span class=cF0>
<a name="l79"></a> </span><span class=cF9>CBlkDev</span><span class=cF0> *bd, *bd1;
<a name="l80"></a> </span><span class=cF9>CDrive</span><span class=cF0> *drive, *p1;
<a name="l81"></a> </span><span class=cF9>CMasterBoot</span><span class=cF0> mbr;
<a name="l82"></a> </span><span class=cF9>CDirEntry</span><span class=cF0> de;
<a name="l83"></a> </span><span class=cF9>I64</span><span class=cF0> i, j, size, *_q;
<a name="l84"></a> </span><span class=cF1>U8</span><span class=cF0> *menu_ptr, *ptr, ch, buf[</span><span class=cF3>STR_LEN</span><span class=cF0>];
<a name="l85"></a> </span><span class=cF1>Bool</span><span class=cF0> res = </span><span class=cF3>FALSE</span><span class=cF0>;
<a name="l86"></a>
<a name="l87"></a> </span><span class=cF1>try</span><span class=cF0>
<a name="l88"></a> </span><span class=cF7>{</span><span class=cF0>
<a name="l89"></a> </span><span class=cF1>if</span><span class=cF0> (drv_list)
<a name="l90"></a> {
<a name="l91"></a> </span><span class=cF5>StrCopy</span><span class=cF0>(buf, drv_list);
<a name="l92"></a> </span><span class=cF5>StrUtil</span><span class=cF0>(buf, </span><span class=cF3>SUF_TO_UPPER</span><span class=cF0>);
<a name="l93"></a> }
<a name="l94"></a> </span><span class=cF1>else</span><span class=cF0>
<a name="l95"></a> {
<a name="l96"></a> j = </span><span class=cFE>0</span><span class=cF0>;
<a name="l97"></a> </span><span class=cF1>for</span><span class=cF0> (i = </span><span class=cF6>'A'</span><span class=cF0>; i &lt;= </span><span class=cF6>'Z'</span><span class=cF0>; i++)
<a name="l98"></a> buf[j++] = i;
<a name="l99"></a> buf[j++] = </span><span class=cFE>0</span><span class=cF0>;
<a name="l100"></a> }
<a name="l101"></a>
<a name="l102"></a> </span><span class=cF5>Drive</span><span class=cF0>(drv_let);
<a name="l103"></a> drive = </span><span class=cF5>Fs</span><span class=cF0>-&gt;cur_dv;
<a name="l104"></a>
<a name="l105"></a> </span><span class=cF1>if</span><span class=cF0> (drive-&gt;fs_type != </span><span class=cF3>FSt_REDSEA</span><span class=cF0> &amp;&amp; drive-&gt;fs_type != </span><span class=cF3>FSt_FAT32</span><span class=cF0>)
<a name="l106"></a> </span><span class=cF5>PrintErr</span><span class=cF0>(</span><span class=cF6>&quot;File System Not Supported\n&quot;</span><span class=cF0>);
<a name="l107"></a> </span><span class=cF1>else</span><span class=cF0>
<a name="l108"></a> {
<a name="l109"></a> bd = drive-&gt;bd;
<a name="l110"></a>
<a name="l111"></a> </span><span class=cF1>if</span><span class=cF0> (!</span><span class=cF5>FileFind</span><span class=cF7>(</span><span class=cF3>BOOT_DIR_OLDMBR_BIN_C</span><span class=cF0>,, </span><span class=cF3>FUF_JUST_FILES</span><span class=cF7>)</span><span class=cF0>)
<a name="l112"></a> </span><span class=cF5>BootMHDOldRead</span><span class=cF0>(drv_let, drv_let);
<a name="l113"></a>
<a name="l114"></a> _q = </span><span class=cFD>BMHD2_BLK_ARRAY</span><span class=cF0>;
<a name="l115"></a> </span><span class=cF5>MemSet</span><span class=cF0>(_q, </span><span class=cFE>0</span><span class=cF0>, </span><span class=cF1>sizeof</span><span class=cF7>(</span><span class=cF9>I64</span><span class=cF7>)</span><span class=cF0> * </span><span class=cFE>8</span><span class=cF0>);
<a name="l116"></a> menu_ptr = </span><span class=cFD>BMHD2_BOOT_MESSAGE</span><span class=cF0>;
<a name="l117"></a> </span><span class=cF5>StrPrint</span><span class=cF0>(menu_ptr, </span><span class=cF6>&quot;\n\r\n\rZealOS Boot Loader\n\r\n\r&quot;</span><span class=cF0>);
<a name="l118"></a> j = </span><span class=cFE>0</span><span class=cF0>;
<a name="l119"></a>
<a name="l120"></a> </span><span class=cF1>if</span><span class=cF0> (</span><span class=cF5>FileFind</span><span class=cF7>(</span><span class=cF3>BOOT_DIR_OLDMBR_BIN_C</span><span class=cF0>, &amp;de, </span><span class=cF3>FUF_JUST_FILES</span><span class=cF7>)</span><span class=cF0>)
<a name="l121"></a> </span><span class=cF7>{</span><span class=cF0>
<a name="l122"></a> </span><span class=cF5>Free</span><span class=cF0>(de.full_name);
<a name="l123"></a> *_q++ = </span><span class=cF5>Clus2Blk</span><span class=cF0>(drive, de.clus);
<a name="l124"></a> </span><span class=cF5>CatPrint</span><span class=cF0>(menu_ptr, </span><span class=cF6>&quot;0. Old Boot Record\n\r&quot;</span><span class=cF0>);
<a name="l125"></a> j++;
<a name="l126"></a> </span><span class=cF7>}</span><span class=cF0>
<a name="l127"></a>
<a name="l128"></a> ptr = buf;
<a name="l129"></a> </span><span class=cF1>while</span><span class=cF0> (ch = *ptr++)
<a name="l130"></a> </span><span class=cF7>{</span><span class=cF0>
<a name="l131"></a> </span><span class=cF1>if</span><span class=cF0> (</span><span class=cF7>(</span><span class=cF0>p1 = </span><span class=cF5>Letter2Drive</span><span class=cF0>(ch, </span><span class=cF3>FALSE</span><span class=cF0>)</span><span class=cF7>)</span><span class=cF0> &amp;&amp; </span><span class=cF7>(</span><span class=cF0>bd1 = p1-&gt;bd</span><span class=cF7>)</span><span class=cF0> &amp;&amp; bd1 == bd)
<a name="l132"></a> {
<a name="l133"></a> *_q = p1-&gt;drv_offset;
<a name="l134"></a> </span><span class=cF6>&quot;Drive %C:%16X\n&quot;</span><span class=cF0>, </span><span class=cF5>Drive2Letter</span><span class=cF0>(p1), *_q;
<a name="l135"></a> </span><span class=cF5>CatPrint</span><span class=cF0>(menu_ptr, </span><span class=cF6>&quot;%d. Drive %C\n\r&quot;</span><span class=cF0>, j++, </span><span class=cF5>Drive2Letter</span><span class=cF7>(</span><span class=cF0>p1</span><span class=cF7>)</span><span class=cF0>);
<a name="l136"></a> _q++;
<a name="l137"></a> }
<a name="l138"></a> </span><span class=cF7>}</span><span class=cF0>
<a name="l139"></a> </span><span class=cF5>CatPrint</span><span class=cF0>(menu_ptr, </span><span class=cF6>&quot;\n\rSelection:&quot;</span><span class=cF0>);
<a name="l140"></a>
<a name="l141"></a> size = </span><span class=cFD>BMHD2_END</span><span class=cF0> - </span><span class=cFD>BMHD2_START</span><span class=cF0>;
<a name="l142"></a> </span><span class=cF5>FileWrite</span><span class=cF0>(</span><span class=cF3>BOOT_DIR_BOOTMHD2_BIN_C</span><span class=cF0>, </span><span class=cFD>BMHD2_START</span><span class=cF0>, size);
<a name="l143"></a>
<a name="l144"></a> </span><span class=cF1>if</span><span class=cF0> (!</span><span class=cF5>FileFind</span><span class=cF7>(</span><span class=cF3>BOOT_DIR_BOOTMHD2_BIN_C</span><span class=cF0>, &amp;de, </span><span class=cF3>FUF_JUST_FILES</span><span class=cF7>)</span><span class=cF0>)
<a name="l145"></a> </span><span class=cF6>&quot;No Boot Loader Image\n&quot;</span><span class=cF0>;
<a name="l146"></a> </span><span class=cF1>else</span><span class=cF0>
<a name="l147"></a> </span><span class=cF7>{</span><span class=cF0>
<a name="l148"></a> </span><span class=cF5>Free</span><span class=cF0>(de.full_name);
<a name="l149"></a>
<a name="l150"></a> *</span><span class=cFD>BMHD_BLK_COUNT</span><span class=cF0>(</span><span class=cF9>U16</span><span class=cF0> *) = (size + </span><span class=cF3>BLK_SIZE</span><span class=cF0> - </span><span class=cFE>1</span><span class=cF0>) &gt;&gt; </span><span class=cF3>BLK_SIZE_BITS</span><span class=cF0>;
<a name="l151"></a> *</span><span class=cFD>BMHD_DAP_BLK</span><span class=cF0>(</span><span class=cF9>I64</span><span class=cF0> *) = </span><span class=cF5>Clus2Blk</span><span class=cF0>(drive, de.clus);
<a name="l152"></a></span><span class=cF2>//Bypass partition bounds-checking</span><span class=cF0>
<a name="l153"></a> </span><span class=cF5>BlkDevLock</span><span class=cF0>(bd);
<a name="l154"></a> </span><span class=cF5>AHCIAtaBlksRead</span><span class=cF0>(bd, &amp;mbr, </span><span class=cFE>0</span><span class=cF0>, </span><span class=cFE>1</span><span class=cF0>);
<a name="l155"></a>
<a name="l156"></a> </span><span class=cF1>for</span><span class=cF0> (i = </span><span class=cFE>0</span><span class=cF0>; i &lt; </span><span class=cFD>BMHD_END</span><span class=cF0> - </span><span class=cFD>BMHD_CODE</span><span class=cF0>; i++)
<a name="l157"></a> mbr.code[i] = </span><span class=cFD>BMHD_CODE</span><span class=cF0>(</span><span class=cF1>U8</span><span class=cF0> *)[i];
<a name="l158"></a>
<a name="l159"></a>#</span><span class=cF1>assert</span><span class=cF0> </span><span class=cF1>sizeof</span><span class=cF0>(</span><span class=cF9>CMasterBoot</span><span class=cF0>.code) &gt;= </span><span class=cFD>BMHD_END</span><span class=cF0> - </span><span class=cFD>BMHD_CODE</span><span class=cF0>
<a name="l160"></a>
<a name="l161"></a> </span><span class=cF1>for</span><span class=cF0> (; i &lt; </span><span class=cF1>sizeof</span><span class=cF7>(</span><span class=cF9>CMasterBoot</span><span class=cF0>.code</span><span class=cF7>)</span><span class=cF0>; i++)
<a name="l162"></a> mbr.code[i] = </span><span class=cFE>0</span><span class=cF0>;
<a name="l163"></a>
<a name="l164"></a> </span><span class=cF1>if</span><span class=cF0> (!mbr.media_id)
<a name="l165"></a> mbr.media_id = </span><span class=cF5>RandU32</span><span class=cF0>;
<a name="l166"></a>
<a name="l167"></a> mbr.zero = </span><span class=cFE>0</span><span class=cF0>;
<a name="l168"></a> mbr.signature = </span><span class=cFE>0xAA55</span><span class=cF0>;
<a name="l169"></a>
<a name="l170"></a> </span><span class=cF5>AHCIAtaBlksWrite</span><span class=cF0>(bd, &amp;mbr, </span><span class=cFE>0</span><span class=cF0>, </span><span class=cFE>1</span><span class=cF0>);
<a name="l171"></a>
<a name="l172"></a> </span><span class=cF5>BlkDevUnlock</span><span class=cF0>(bd);
<a name="l173"></a> res = </span><span class=cF3>TRUE</span><span class=cF0>;
<a name="l174"></a> </span><span class=cF7>}</span><span class=cF0>
<a name="l175"></a> }
<a name="l176"></a> </span><span class=cF7>}</span><span class=cF0>
<a name="l177"></a> </span><span class=cF1>catch</span><span class=cF0>
<a name="l178"></a> </span><span class=cF5>PutExcept</span><span class=cF0>;
<a name="l179"></a> </span><span class=cF1>return</span><span class=cF0> res;
<a name="l180"></a>}
</span></pre></body>
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