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📄 csdn技术中心 实战deviceiocontrol 之七：在windows 9x中读写磁盘扇区.mht

📁 DeviceIOControl实战演示及源代码
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    <SPAN class=3Drem>// =
=CC=EE=B3=E4=BC=C4=B4=E6=C6=F7=D7=E9--=D6=D0=B6=CF=C8=EB=BF=DA=B2=CE=CA=FD=
 </SPAN>
    memset(&amp;regs, <SPAN class=3Dnum>0</SPAN>, <SPAN =
class=3Dkey>sizeof</SPAN>(DIOC_REGISTERS));
    regs.reg_EAX =3D <SPAN class=3Dnum>0x440D</SPAN>;                    =
   <SPAN class=3Drem>// AX=3D0x440D</SPAN>
    regs.reg_EBX =3D <SPAN class=3Dnum>0x0100</SPAN> | nDiskNumber;      =
   <SPAN class=3Drem>// =
BH=3D=CB=F8=B5=C4=BC=B6=B1=F0=A3=ACBL=3D=C5=CC=BA=C5</SPAN>
    regs.reg_ECX =3D <SPAN class=3Dnum>0x084A</SPAN>;
    regs.reg_EDX =3D <SPAN class=3Dnum>0</SPAN>;
 =20
    <SPAN class=3Drem>// =
=D3=C3VWIN32_DIOC_DOS_DRIVEINFO=B6=C1=B4=C5=C5=CC</SPAN>
    dwOutBytes =3D <SPAN class=3Dnum>0</SPAN>;
    bResult =3D DeviceIoControl(hDevice,           <SPAN class=3Drem>// =
=C9=E8=B1=B8=BE=E4=B1=FA</SPAN>
        VWIN32_DIOC_DOS_IOCTL,                   <SPAN class=3Drem>// =
INT21</SPAN>
        &amp;regs, <SPAN class=3Dkey>sizeof</SPAN>(regs),                =
     <SPAN class=3Drem>// =
=CA=E4=C8=EB=CA=FD=BE=DD=BB=BA=B3=E5=C7=F8=D3=EB=B3=A4=B6=C8</SPAN>
        &amp;regs, <SPAN class=3Dkey>sizeof</SPAN>(regs),                =
     <SPAN class=3Drem>// =
=CA=E4=B3=F6=CA=FD=BE=DD=BB=BA=B3=E5=C7=F8=D3=EB=B3=A4=B6=C8</SPAN>
        &amp;dwOutBytes,                             <SPAN =
class=3Drem>// =CA=E4=B3=F6=CA=FD=BE=DD=B3=A4=B6=C8</SPAN>
        NULL);                                   <SPAN class=3Drem>// =
=D3=C3=CD=AC=B2=BDI/O</SPAN>
=20
    <SPAN class=3Drem>// =
=C8=B7=B6=A8DeviceIoControl=D3=EBINT21=B6=BC=CE=DE=B4=ED=CE=F3 </SPAN>
    bResult =3D bResult &amp;&amp; !(regs.reg_Flags &amp; <SPAN =
class=3Dnum>1</SPAN>);
 =20
    CloseHandle(hDevice);
 =20
    <SPAN class=3Dkey>return</SPAN> bResult;
}
 =20
BOOL UnlockVolume(
    BYTE nDiskNumber)         <SPAN class=3Drem>// =C5=CC=BA=C5, 1=3DA:, =
2=3DB:, 3=3DC:, ... </SPAN>
{
    HANDLE hDevice;
    DIOC_REGISTERS regs;
    DWORD dwOutBytes;
    BOOL bResult;
 =20
    <SPAN class=3Drem>// =
=B4=F2=BF=AA=C9=E8=B1=B8=A3=AC=BB=F1=B5=C3VxD=BE=E4=B1=FA</SPAN>
    hDevice =3D CreateFile(<SPAN class=3Dstr>"\\\\.\\vwin32"</SPAN>,     =
   <SPAN class=3Drem>// =C9=E8=B1=B8=C2=B7=BE=B6</SPAN>
        GENERIC_READ | GENERIC_WRITE,            <SPAN class=3Drem>// =
=B6=C1=D0=B4=B7=BD=CA=BD</SPAN>
        FILE_SHARE_READ | FILE_SHARE_WRITE,      <SPAN class=3Drem>// =
=B9=B2=CF=ED=B7=BD=CA=BD</SPAN>
        NULL,                                    <SPAN class=3Drem>// =
=C4=AC=C8=CF=B5=C4=B0=B2=C8=AB=C3=E8=CA=F6=B7=FB</SPAN>
        OPEN_EXISTING,                           <SPAN class=3Drem>// =
=B4=B4=BD=A8=B7=BD=CA=BD</SPAN>
        FILE_ATTRIBUTE_NORMAL,                   <SPAN class=3Drem>// =
=CE=C4=BC=FE=CA=F4=D0=D4</SPAN>
        NULL);                                   <SPAN class=3Drem>// =
=B2=BB=D0=E8=B2=CE=D5=D5=C4=A3=B0=E5=CE=C4=BC=FE</SPAN>
 =20
    <SPAN class=3Dkey>if</SPAN>(hDevice =3D=3D INVALID_HANDLE_VALUE)
    {
        <SPAN class=3Dkey>return</SPAN> FALSE;
    }
 =20
    <SPAN class=3Drem>// =
=CC=EE=B3=E4=BC=C4=B4=E6=C6=F7=D7=E9--=D6=D0=B6=CF=C8=EB=BF=DA=B2=CE=CA=FD=
 </SPAN>
    memset(&amp;regs, <SPAN class=3Dnum>0</SPAN>, <SPAN =
class=3Dkey>sizeof</SPAN>(DIOC_REGISTERS));
    regs.reg_EAX =3D <SPAN class=3Dnum>0x440D</SPAN>;                    =
   <SPAN class=3Drem>// AX=3D0x440D</SPAN>
    regs.reg_EBX =3D nDiskNumber;                  <SPAN class=3Drem>// =
BL=3D=C5=CC=BA=C5</SPAN>
    regs.reg_ECX =3D <SPAN class=3Dnum>0x086A</SPAN>;
 =20
    <SPAN class=3Drem>// =
=D3=C3VWIN32_DIOC_DOS_DRIVEINFO=B6=C1=B4=C5=C5=CC</SPAN>
    dwOutBytes =3D <SPAN class=3Dnum>0</SPAN>;
    bResult =3D DeviceIoControl(hDevice,           <SPAN class=3Drem>// =
=C9=E8=B1=B8=BE=E4=B1=FA</SPAN>
        VWIN32_DIOC_DOS_IOCTL,                   <SPAN class=3Drem>// =
INT21</SPAN>
        &amp;regs, <SPAN class=3Dkey>sizeof</SPAN>(regs),                =
     <SPAN class=3Drem>// =
=CA=E4=C8=EB=CA=FD=BE=DD=BB=BA=B3=E5=C7=F8=D3=EB=B3=A4=B6=C8</SPAN>
        &amp;regs, <SPAN class=3Dkey>sizeof</SPAN>(regs),                =
     <SPAN class=3Drem>// =
=CA=E4=B3=F6=CA=FD=BE=DD=BB=BA=B3=E5=C7=F8=D3=EB=B3=A4=B6=C8</SPAN>
        &amp;dwOutBytes,                             <SPAN =
class=3Drem>// =CA=E4=B3=F6=CA=FD=BE=DD=B3=A4=B6=C8</SPAN>
        NULL);                                   <SPAN class=3Drem>// =
=D3=C3=CD=AC=B2=BDI/O</SPAN>
 =20
    <SPAN class=3Drem>// =
=C8=B7=B6=A8DeviceIoControl=D3=EBINT21=B6=BC=CE=DE=B4=ED=CE=F3 </SPAN>
    bResult =3D bResult &amp;&amp; !(regs.reg_Flags &amp; <SPAN =
class=3Dnum>1</SPAN>);
 =20
    CloseHandle(hDevice);
 =20
    <SPAN class=3Dkey>return</SPAN> bResult;
}
</CODE></PRE>
            <P =
class=3Dbhw98>=CF=C2=C3=E6=B5=C4=C0=FD=D7=D3=A3=AC=B4=D3A=C5=CC=B5=C40=C9=
=C8=C7=F8=BF=AA=CA=BC=A3=AC=B6=C1=C8=A110=B8=F6=C9=C8=C7=F8=B5=C4=CA=FD=BE=
=DD=A3=AC=B2=A2=B1=A3=B4=E6=D4=DA=CE=C4=BC=FE=D6=D0=A3=BA <PRE =
class=3Dbhw98><CODE class=3Dbhw98>    <SPAN class=3Dkey>unsigned</SPAN> =
<SPAN class=3Dkey>char</SPAN> buf[<SPAN class=3Dnum>512</SPAN> * <SPAN =
class=3Dnum>10</SPAN>];
=20
    <SPAN class=3Dkey>if</SPAN> (AbsDiskRead(<SPAN class=3Dnum>1</SPAN>, =
<SPAN class=3Dnum>0</SPAN>, <SPAN class=3Dnum>10</SPAN>, buf))
    {
        FILE* fp =3D fopen(<SPAN class=3Dstr>"a.dat"</SPAN>, <SPAN =
class=3Dstr>"w+b"</SPAN>);
        fwrite(buf, <SPAN class=3Dnum>512</SPAN>, <SPAN =
class=3Dnum>10</SPAN>, fp);
        fclose(fp);
    }
</CODE></PRE>
            <P =
class=3Dbhw98>=CF=C2=C3=E6=B5=C4=C0=FD=D7=D3=A3=AC=B6=C1=C8=A1D=C7=FD=B6=AF=
=C6=F7=B5=C4=B5=DA8888=C9=C8=C7=F8=A3=AC=C8=BB=BA=F3=D0=B4=BB=D8=C8=A5=A3=
=BA <PRE class=3Dbhw98><CODE class=3Dbhw98>    <SPAN =
class=3Dkey>unsigned</SPAN> <SPAN class=3Dkey>char</SPAN> buf[<SPAN =
class=3Dnum>512</SPAN>];
 =20
    LockVolume(<SPAN class=3Dnum>4</SPAN>);
    <SPAN class=3Dkey>if</SPAN> (AbsDiskRead(<SPAN class=3Dnum>4</SPAN>, =
<SPAN class=3Dnum>8888</SPAN>, <SPAN class=3Dnum>1</SPAN>, buf))
    {
        ... ...
        <SPAN class=3Dkey>if</SPAN> (AbsDiskWrite(<SPAN =
class=3Dnum>4</SPAN>, <SPAN class=3Dnum>8888</SPAN>, <SPAN =
class=3Dnum>1</SPAN>, buf))
        {
           ... ...
        }
    }
    UnlockVolume(<SPAN class=3Dnum>4</SPAN>);
</CODE></PRE>
            <P =
class=3Dbhw98>=D4=DA=D0=B4=B7=BD=CA=BD=CF=C2=A3=ACSI=BC=C4=B4=E6=C6=F7=B5=
=C4=CE=BB0=C9=E8=D6=C3=CE=AA1=A3=AC=CE=BB15-13=D4=DA=B4=C5=C5=CC=B5=C4=B2=
=BB=CD=AC=C7=F8=D3=F2=D0=E8=D2=AA=D3=D0=B2=BB=CD=AC=B5=C4=D6=B5=A3=BA=20
            <TABLE class=3Dbhw98 cellSpacing=3D1 cellPadding=3D1 =
align=3Dcenter=20
border=3D1>
              <TBODY>
              <TR>
                <TD class=3Dbhw98>Bit 15</TD>
                <TD class=3Dbhw98>Bit 14</TD>
                <TD class=3Dbhw98>Bit 13</TD>
                <TD class=3Dbhw98>Description</TD></TR>
              <TR>
                <TD class=3Dbhw98>0</TD>
                <TD class=3Dbhw98>0</TD>
                <TD class=3Dbhw98>0</TD>
                <TD class=3Dbhw98>Other/Unknown.</TD></TR>
              <TR>
                <TD class=3Dbhw98>0</TD>
                <TD class=3Dbhw98>0</TD>
                <TD class=3Dbhw98>1</TD>
                <TD class=3Dbhw98>FAT data.</TD></TR>
              <TR>
                <TD class=3Dbhw98>0</TD>
                <TD class=3Dbhw98>1</TD>
                <TD class=3Dbhw98>0</TD>
                <TD class=3Dbhw98>Directory data.</TD></TR>
              <TR>
                <TD class=3Dbhw98>0</TD>
                <TD class=3Dbhw98>1</TD>
                <TD class=3Dbhw98>1</TD>
                <TD class=3Dbhw98>Normal file data.</TD></TR>
              <TR>
                <TD class=3Dbhw98>1</TD>
                <TD class=3Dbhw98>0</TD>
                <TD class=3Dbhw98>0</TD>
                <TD class=3Dbhw98>Reserved.</TD></TR></TBODY></TABLE>
            <P=20
            =
class=3Dbhw98>=C8=E7=B9=FB=B2=BB=B0=B4=D5=D5=C9=CF=CA=F6=D6=B5=B2=D9=D7=F7=
=A3=AC=BE=A1=B9=DC=C4=DC=B9=BB=D0=B4=B3=C9=B9=A6=A3=AC=B5=AB=CF=B5=CD=B3=CE=
=DE=B7=A8=D7=D4=B6=AF=CD=EA=B3=C9=CF=E0=B9=D8=B9=A6=C4=DC=A3=AC=BF=C9=C4=DC=
=BB=E1=B5=BC=D6=C2FAT=CA=FD=BE=DD=B1=B8=B7=DD=A1=A2=C7=FD=B6=AF=C6=F7=CA=FD=
=BE=DD=D1=B9=CB=F5=B5=C8=B7=BD=C3=E6=B5=C4=CE=CA=CC=E2=A1=A3=20

            <P class=3Dbhw98>=20
            <H2 class=3Dbhw98>[=CF=E0=B9=D8=D7=CA=D4=B4]</H2>
            <LI class=3Dbhw98>bhw98=B5=C4=D7=A8=C0=B8=A3=BA<A=20
            =
href=3D"http://www.csdn.net/develop/author/netauthor/bhw98/">http://www.c=
sdn.net/develop/author/netauthor/bhw98/</A>=20

            <HR>

            <P class=3Dbhw98 align=3Dright>=CA=D7=B4=CE=B7=A2=B2=BC: =
2003-08-20<BR>=D7=EE=BA=F3=D0=DE=B6=A9: 2003-09-12=20
            <P class=3Dbhw98>&nbsp;</P></SPAN><BR>
            <DIV=20
            style=3D"FONT-SIZE: 14px; LINE-HEIGHT: =
25px"><STRONG>=D7=F7=D5=DFBlog=A3=BA</STRONG><A=20
            id=3DArticleContent1_ArticleContent1_AuthorBlogLink=20
            href=3D"http://blog.csdn.net/bhw98/"=20
            target=3D_blank>http://blog.csdn.net/bhw98/</A></DIV>
            <DIV=20
            style=3D"FONT-SIZE: 14px; COLOR: #900; LINE-HEIGHT: =
25px"><STRONG>=CF=E0=B9=D8=CE=C4=D5=C2</STRONG></DIV>
            <TABLE id=3DArticleContent1_ArticleContent1_RelatedArticles=20
            style=3D"BORDER-COLLAPSE: collapse" cellSpacing=3D0 =
border=3D0>
              <TBODY>
              <TR>
                <TD><A=20
                  =
href=3D"http://dev.csdn.net/article/20/article/27/27281.shtm">=B8=F8=D3=A6=
=D3=C3=B3=CC=D0=F2=BC=D3=D7=B0=A1=B0=BF=B4=C3=C5=B9=B7=A1=B1</A>=20
                </TD></TR>
              <TR>
                <TD><A=20
                  =
href=3D"http://dev.csdn.net/article/20/article/25/25700.shtm">=A1=B0=CD=A8=
=B9=FD=B4=AE=BF=DA=CA=D5=B7=A2=B6=CC=CF=FB=CF=A2=A1=B1=B5=C4Q&amp;A=BB=E3=
=B1=E0</A>=20
                </TD></TR>
              <TR>
                <TD><A=20
                  =
href=3D"http://dev.csdn.net/article/20/article/25/25263.shtm">=D3=C3JScri=
pt=CA=B5=CF=D6=B9=AB=C0=FA=B5=BD=C5=A9=C0=FA=B5=C4=C8=D5=C6=DA=D7=AA=BB=BB=
</A>=20
                </TD></TR>
              <TR>
                <TD><A=20
                  =
href=3D"http://dev.csdn.net/article/20/article/24/24861.shtm">=CD=A8=B9=FD=
=B4=AE=BF=DA=CA=B5=CA=B1=BD=D3=CA=D5=B6=CC=CF=FB=CF=A2</A>=20
                </TD></TR>
              <TR>
                <TD><A=20
                  =
href=3D"http://dev.csdn.net/article/20/article/23/23452.shtm">MSN=20
                  Messenger=D0=AD=D2=E9=B8=C5=BF=F6</A>=20
      </TD></TR></TBODY></TABLE></LI></TD></TR></TBODY></TABLE><A=20
      name=3D#Comment></A>
      <TABLE cellPadding=3D0 width=3D"100%" border=3D0>
        <TBODY>
        <TR>
          <TD>
            <TABLE cellSpacing=3D0 cellPadding=3D0 width=3D"100%" =
align=3Dcenter=20
            bgColor=3D#006699 border=3D0>
              <TBODY>
              <TR bgColor=3D#006699>
                <TD id=3Dwhite align=3Dmiddle width=3D556 =
bgColor=3D#006699><FONT=20
                  =
color=3D#ffffff>=B6=D4=B8=C3=CE=C4=B5=C4=C6=C0=C2=DB</FONT> =
</TD></TR></TBODY></TABLE>
            <TABLE cellSpacing=3D1 cellPadding=3D2 width=3D"100%" =
align=3Dcenter=20
            bgColor=3D#666666 border=3D0>
              <TBODY>
              <TR>
                <TD bgColor=3D#cccccc colSpan=3D3><SPAN=20
                  style=3D"COLOR: #990000"><IMG height=3D16 hspace=3D1=20
                  src=3D"http://dev.csdn.net/images/ico_pencil.gif" =
width=3D16>=20
                  </SPAN><SPAN=20
                  =
id=3DCommnetList1_CommnetList1_rpCommentList__ctl0_lblUserName>icqwyq0006=
</SPAN>=20
                  <I>( <SPAN=20
                  =
id=3DCommnetList1_CommnetList1_rpCommentList__ctl0_lblPostTime>2004-05-17=
</SPAN>)</I>=20
                </TD></TR>
              <TR>
                <TD width=3D532 bgColor=3D#ffffff colSpan=3D3><SPAN=20
                  =
id=3DCommnetList1_CommnetList1_rpCommentList__ctl0_lblContent>=BD=E8=D5=E2=
=B8=F6=B5=D8=B7=BD=CE=CA=B8=F6=CE=CA=CC=E2,=C8=E7=BA=CE=D3=C3=D5=E2=D6=D6=
=B5=F7=D3=C3=D6=D0=B6=CF=B5=C4=B7=BD=B7=A8=C0=B4=B8=F1=CA=BD=BB=AF=D2=BB=B8=
=F6=C8=ED=C5=CC?</SPAN>=20
                </TD></TR></TBODY></TABLE>
            <TABLE cellSpacing=3D1 cellPadding=3D2 width=3D"100%" =
align=3Dcenter=20
12345

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