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

=A7=B3=D6FAT12=A1=A2FAT16=BA=CDFAT32=A3=AC=CA=CA=D3=C3=D3=DAWindows 95 =
SR2=D2=D4=BC=B0=B8=FC=B8=DF=B0=E6=B1=BE=A1=A3=20
            <P class=3Dbhw98>=CF=C8=C0=B4=C1=CB=BD=E2=D2=BB=CF=C2DOS =
INT21 7305H=B9=A6=C4=DC=B5=C4=C8=EB=BF=DA=B2=CE=CA=FD=A3=BA <PRE =
class=3Dbhw98><CODE class=3Dbhw98>AX -- =B9=A6=C4=DC=BA=C57305H
DS:BX -- =B6=C1=D0=B4=C9=C8=C7=F8=B5=C4=D0=C5=CF=A2=BD=E1=B9=B9
CX -- =B1=D8=D0=EB=CE=AA-1
DL -- =C7=FD=B6=AF=C6=F7=BA=C5: <SPAN class=3Dnum>1</SPAN>=3DA:, <SPAN =
class=3Dnum>2</SPAN>=3DB:, <SPAN class=3Dnum>3</SPAN>=3DC:, ...
SI -- =B6=C1=D0=B4=B1=EA=D6=BE: =D7=EE=B5=CD=CE=BB0=3D=B6=C1, <SPAN =
class=3Dnum>1</SPAN>=3D=D0=B4
</CODE></PRE>
            <P =
class=3Dbhw98>=C8=F4=B5=F7=D3=C3=B3=C9=B9=A6=A3=AC=C7=E5=B3=FDC=B1=EA=D6=BE=
=A3=BB=B7=F1=D4=F2=C9=E8=D6=C3C=B1=EA=D6=BE=A1=A3=20
            <P =
class=3Dbhw98>DS:BX=D6=B8=CF=F2=D2=BB=B8=F6=BD=E1=B9=B9=A3=AC=B4=CB=BD=E1=
=B9=B9=B6=A8=D2=E5=C8=E7=CF=C2=A3=BA <PRE class=3Dbhw98><CODE =
class=3Dbhw98>DISKIO STRUC
    dwStartSector   dd ?    ; =C6=F0=CA=BC=C9=C8=C7=F8
    wSector         dw ?    ; =C9=C8=C7=F8=CA=FD
    lpBuffer        dd ?    ; =CA=FD=BE=DD=BB=BA=B3=E5=C7=F8=B5=D8=D6=B7
DISKIO ENDS
</CODE></PRE>
            <P =
class=3Dbhw98>=D4=DA=D0=B4=B2=D9=D7=F7=CF=C2=A3=AC=D0=E8=D2=AA=A1=B0=CB=F8=
=B6=A8=A1=B1=C7=FD=B6=AF=C6=F7=A1=A3DOS INT21=20
            =
440DH=B5=C44AH/6AH=B9=A6=C4=DC=BF=C9=CA=B5=CF=D6=C2=DF=BC=AD=C7=FD=B6=AF=C6=
=F7=B5=C4=BC=D3=CB=F8/=BD=E2=CB=F8=A1=A3=C6=E4=C8=EB=BF=DA=B2=CE=CA=FD=CE=
=AA=A3=BA <PRE class=3Dbhw98><CODE class=3Dbhw98>AX -- =
=B9=A6=C4=DC=BA=C5440DH
BH -- =
=CB=F8=B5=C4=BC=B6=B1=F0=A3=AC0-3=BC=B6=A3=AC=D6=B1=BD=D3=D0=B4=C9=C8=C7=F8=
=D3=C31
BL -- =C7=FD=B6=AF=C6=F7=BA=C5: <SPAN class=3Dnum>1</SPAN>=3DA:, <SPAN =
class=3Dnum>2</SPAN>=3DB:, <SPAN class=3Dnum>3</SPAN>=3DC:, ...
CH -- <SPAN class=3Dnum>0x08</SPAN>
CL -- <SPAN class=3Dnum>0x4A</SPAN>
DX -- <SPAN class=3Dnum>0</SPAN>
</CODE></PRE><PRE class=3Dbhw98><CODE class=3Dbhw98>AX -- =
=B9=A6=C4=DC=BA=C5440DH
BL -- =C7=FD=B6=AF=C6=F7=BA=C5: <SPAN class=3Dnum>1</SPAN>=3DA:, <SPAN =
class=3Dnum>2</SPAN>=3DB:, <SPAN class=3Dnum>3</SPAN>=3DC:, ...
CH -- <SPAN class=3Dnum>0x08</SPAN>
CL -- <SPAN class=3Dnum>0x6A</SPAN>
</CODE></PRE>
            <P =
class=3Dbhw98>=D2=D4=C9=CF=C1=BD=B8=F6=B5=F7=D3=C3=A3=AC=C8=F4=B5=F7=D3=C3=
=B3=C9=B9=A6=A3=AC=C7=E5=B3=FDC=B1=EA=D6=BE=A3=BB=B7=F1=D4=F2=C9=E8=D6=C3=
C=B1=EA=D6=BE=A1=A3=20
            <P=20
            =
class=3Dbhw98>=CD=A8=B9=FDIOCTL=C2=EBVWIN32_DIOC_DOS_DRIVEINFO=B5=C8=B5=F7=
=D3=C3=C9=CF=CA=F6=D6=D0=B6=CF=A1=A3=CA=B5=CF=D6=BE=F8=B6=D4=B4=C5=C5=CC=B6=
=C1=D0=B4=B5=C4=B9=D8=BC=FC=B4=FA=C2=EB=C8=E7=CF=C2=A3=BA=20
<PRE class=3Dbhw98><CODE class=3Dbhw98><SPAN class=3Drem>// =
INT21=B5=C4IOCTL=C2=EB</SPAN>
<SPAN class=3Dkey>#define</SPAN> VWIN32_DIOC_DOS_IOCTL        <SPAN =
class=3Dnum>1</SPAN>
<SPAN class=3Dkey>#define</SPAN> VWIN32_DIOC_DOS_DRIVEINFO    <SPAN =
class=3Dnum>6</SPAN>
=20
<SPAN class=3Drem>// =BC=C4=B4=E6=C6=F7=D7=E9</SPAN>
<SPAN class=3Dkey>typedef</SPAN> <SPAN class=3Dkey>struct</SPAN> =
_DIOC_REGISTERS {
    DWORD reg_EBX;
    DWORD reg_EDX;
    DWORD reg_ECX;
    DWORD reg_EAX;
    DWORD reg_EDI;
    DWORD reg_ESI;
    DWORD reg_Flags;
} DIOC_REGISTERS, *PDIOC_REGISTERS;
=20
<SPAN class=3Drem>// =
IO=B2=CE=CA=FD(=D7=A2=D2=E2=D7=D6=BD=DA=B6=D4=C6=EB=B7=BD=CA=BD)</SPAN>
<SPAN class=3Dkey>#pragma</SPAN> pack(<SPAN class=3Dnum>1</SPAN>)
<SPAN class=3Dkey>typedef</SPAN> <SPAN class=3Dkey>struct</SPAN> _DISKIO =
{
    DWORD  dwStartSector;     <SPAN class=3Drem>// =
=C6=F0=CA=BC=C9=C8=C7=F8</SPAN>
    WORD   wSectors;          <SPAN class=3Drem>// =
=C9=C8=C7=F8=CA=FD</SPAN>
    <SPAN class=3Dkey>void</SPAN>*  pBuffer;           <SPAN =
class=3Drem>// =BB=BA=B3=E5=C7=F8=D6=B8=D5=EB</SPAN>
} DISKIO, *PDISKIO;
<SPAN class=3Dkey>#pragma</SPAN> pack()
=20
BOOL AbsDiskRead(
    BYTE nDiskNumber,         <SPAN class=3Drem>// =C5=CC=BA=C5, 1=3DA:, =
2=3DB:, 3=3D C:, ... </SPAN>
    DWORD dwStartSector,      <SPAN class=3Drem>// =
=C6=F0=CA=BC=C9=C8=C7=F8</SPAN>
    WORD wSectors,            <SPAN class=3Drem>// =
=C9=C8=C7=F8=CA=FD</SPAN>
    <SPAN class=3Dkey>void</SPAN>* pBuffer)            <SPAN =
class=3Drem>// =CA=FD=BE=DD=BB=BA=B3=E5=C7=F8=D6=B8=D5=EB</SPAN>
{
    HANDLE hDevice;
    DIOC_REGISTERS regs;
    DISKIO dio;
    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=E4DISKIO=B2=CE=CA=FD=BD=E1=B9=B9</SPAN>
    dio.dwStartSector =3D dwStartSector;
    dio.wSectors =3D wSectors;
    dio.pBuffer =3D pBuffer;
=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>0x7305</SPAN>;           <SPAN =
class=3Drem>// AX=3D0x7305</SPAN>
    regs.reg_EBX =3D (DWORD)&amp;dio;      <SPAN class=3Drem>// =
EBX=3DDS:BX=3D=B2=CE=CA=FD=D6=B8=D5=EB</SPAN>
    regs.reg_ECX =3D <SPAN class=3Dnum>0xffff</SPAN>;           <SPAN =
class=3Drem>// CX=3D-1</SPAN>
    regs.reg_EDX =3D nDiskNumber;      <SPAN class=3Drem>// =
DL=3D=C5=CC=BA=C5</SPAN>
    regs.reg_ESI =3D <SPAN class=3Dnum>0</SPAN>;                <SPAN =
class=3Drem>// SI=3D0 -- =B6=C1=B2=D9=D7=F7</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_DRIVEINFO,               <SPAN class=3Drem>// =
INT21</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;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 AbsDiskWrite(
    BYTE nDiskNumber,        <SPAN class=3Drem>// =C5=CC=BA=C5, 1=3DA:, =
2=3DB:, 3=3D C:, ... </SPAN>
    DWORD dwStartSector,     <SPAN class=3Drem>// =
=C6=F0=CA=BC=C9=C8=C7=F8</SPAN>
    WORD wSectors,           <SPAN class=3Drem>// =
=C9=C8=C7=F8=CA=FD</SPAN>
    <SPAN class=3Dkey>void</SPAN>* pBuffer)           <SPAN =
class=3Drem>// =CA=FD=BE=DD=BB=BA=B3=E5=C7=F8=D6=B8=D5=EB</SPAN>
{
    HANDLE hDevice;
    DIOC_REGISTERS regs;
    DISKIO dio;
    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=E4DISKIO=B2=CE=CA=FD=BD=E1=B9=B9</SPAN>
    dio.dwStartSector =3D dwStartSector;
    dio.wSectors =3D wSectors;
    dio.pBuffer =3D pBuffer;
=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>0x7305</SPAN>;             <SPAN =
class=3Drem>// AX=3D0x7305</SPAN>
    regs.reg_EBX =3D (DWORD)&amp;dio;        <SPAN class=3Drem>// =
EBX=3DDS:BX=3D=B2=CE=CA=FD=D6=B8=D5=EB</SPAN>
    regs.reg_ECX =3D <SPAN class=3Dnum>0xffff</SPAN>;             <SPAN =
class=3Drem>// CX=3D-1</SPAN>
    regs.reg_EDX =3D nDiskNumber;        <SPAN class=3Drem>// =
DL=3D=C5=CC=BA=C5</SPAN>
    regs.reg_ESI =3D <SPAN class=3Dnum>0x6001</SPAN>;             <SPAN =
class=3Drem>// SI=3D0x6001 -- =C6=D5=CD=A8=D0=B4=B2=D9=D7=F7</SPAN>
=20
    <SPAN class=3Drem>// =
=D3=C3VWIN32_DIOC_DOS_DRIVEINFO=D0=B4=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_DRIVEINFO,               <SPAN class=3Drem>// =
INT21</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;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 LockVolume(
    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