| [15] | 1 | unit DriveInfoUnit;
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| 2 |
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| 3 | interface
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| 4 |
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| 5 | const
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| 6 | MinDriveNumber = 1;
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| 7 | MaxDriveNumber = 26;
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| 8 |
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| 9 | type
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| 10 | TDriveType =
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| 11 | (
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| 12 | dtNone,
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| 13 | dtFloppy,
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| 14 | dtHard,
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| 15 | dtCD,
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| 16 | dtNetwork,
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| 17 | dtRemovable
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| 18 | );
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| 19 |
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| 20 | // Drive numbers are one based
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| 21 |
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| 22 | Function IsFloppyDrive( DriveNumber: longint ): Boolean;
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| 23 |
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| 24 | Function GetLocalDriveType( DriveNumber: longint ): TDriveType;
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| 25 |
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| 26 | Function GetDriveType( DriveNumber: longint ): TDriveType;
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| 27 |
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| 28 | Function GetNetworkDriveRemotePath( DriveNumber: longint ): string;
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| 29 |
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| 30 | implementation
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| 31 |
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| 32 | uses
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| 33 | BseDos, OS2def, BseErr, BseDev,
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| 34 | SysUtils,
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| 35 | ACLUtility, ACLFileUtility, ACLStringUtility;
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| 36 |
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| 37 | imports
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| 38 | FUNCTION _DosQueryFSAttach( VAR pszDeviceName: CSTRING;
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| 39 | ulOrdinal: ULONG;
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| 40 | ulFSAInfoLevel:ULONG;
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| 41 | pfsqb: PFSQBUFFER2;
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| 42 | VAR pcbBuffLength: ULONG ): APIRET; APIENTRY;
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| 43 | 'DOSCALLS' index 277;
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| 44 | end;
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| 45 |
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| 46 | type
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| 47 | TWord = Record // Bytes of a Word
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| 48 | LoByte, HiByte : Byte;
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| 49 | End;
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| 50 |
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| 51 | TBPB = Array[0..30] Of Byte; // Puffer fuer BPB-Struktur
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| 52 |
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| 53 | TDeviceParameters = Record
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| 54 | BPB: TBPB;
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| 55 | Cylinders: word;
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| 56 | DeviceType: Byte;
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| 57 | Attributes: Word;
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| 58 | End;
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| 59 |
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| 60 | Function IsFloppyDrive( DriveNumber: longint ): Boolean;
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| 61 | Var
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| 62 | bResult : Byte;
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| 63 | Begin
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| 64 | DosDevConfig( bResult, DEVINFO_FLOPPY );
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| 65 | Result := ( Abs( DriveNumber ) <= bResult);
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| 66 | End;
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| 67 |
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| 68 | // -------------------------------------------------------------------------
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| 69 | // Funktion/Function: QueryCDRoms()
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| 70 | //
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| 71 | // Beschreibung:
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| 72 | // Die Funktion QueryCDRom ermittelt ueber eine nicht dokumentierte
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| 73 | // Schnittstelle die Anzahl der CDRom-Laufwerke und den ersten, fuer
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| 74 | // ein CDRom-Laufwerk, vergebenen UnitIdentifier.
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| 75 | // Der Treiber OS2CDROM.DMD stellt dem System zwei Devices (CD-ROM1$
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| 76 | // und CD-ROM2$) zur Verfuegung. Die beiden Devices unterscheiden sich
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| 77 | // durch DeviceAttribute. Beide Devices unterstuetzen (zumindest unter
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| 78 | // Warp) den undokumentierten Generic IOCtl 0x82/0x60, welcher Infor-
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| 79 | // mationen ueber die angeschlossenen CDRom-Laufwerke liefert.
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| 80 | //
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| 81 | // Description:
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| 82 | // This Functions finds out how many CD-Rom Drives are present in System
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| 83 | // and which Drive Letter is the first occupied by a CD-Rom. It uses an
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| 84 | // undocumented Interface to OS2CDROM.DMD.
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| 85 | // OS2CDROM.DMD presents two Devices (CD-ROM1$ and CD-ROM2$). These De-
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| 86 | // vices are distinguished by their Device-Attributes. Both Devices sup-
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| 87 | // port (under Warp) the undocumented generic IOCtl-Call 0x82/0x60 which
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| 88 | // deliver some Information about the connected CD-Rom Drives.
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| 89 | //
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| 90 | // Parameter:
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| 91 | // Var ulCDRomCount ULONG Anzahl CD-Rom Laufwerke im System
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| 92 | // Number of CD-Rom Drives in System
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| 93 | //
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| 94 | // Var ulFirstCDRomDiskNo ULONG erste Laufwerksnummer, die an ein
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| 95 | // CD-Rom vergeben ist
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| 96 | // first Drive-Letter occupied by a
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| 97 | // CD-Rom Drive
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| 98 | //
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| 99 | // Rueckgabe/Returnvalue: keine/none
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| 100 | // -------------------------------------------------------------------------
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| 101 | Procedure QueryCDRoms(Var ulCDRomCount, ulFirstCDRomDiskNo: ULONG);
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| 102 |
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| 103 | Const cszDriverName : CSTRING = 'CD-ROM?$';
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| 104 |
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| 105 | Var cCurDriver : Char; // Indexvariable fuer aktuell bearbeites Device (1 oder 2)
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| 106 | // Index for current Device (1 or 2)
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| 107 |
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| 108 | hDevHandle : HFILE; // Handle fuer Device
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| 109 | // Device handle
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| 110 |
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| 111 | ulAction : ULONG; // Aktionscode (DosOpen())
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| 112 | // Actioncode (DosOpen())
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| 113 |
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| 114 | ulParams : ULONG; // Anzahl Bytes von IOCtl gelieferter Parameterdaten
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| 115 | // Number of Bytes for delivered Parameterdata
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| 116 |
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| 117 | ulData : ULONG; // Anzahl Bytes von IOCtl gelieferter Daten
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| 118 | // Number of Bytes delivered by IOCtl
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| 119 |
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| 120 | rCDInfo : Record // Ergebnisstruktur der IOCtl-Funktion (s.o.)
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| 121 | // Record for Results of IOCtl-Call (see above)
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| 122 | usCDRomCount : USHORT; // Anzahl CD-Roms / Number of CD-Rom Drives
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| 123 | usFirstUnitNo: USHORT; // erste vergebene Laufwerksnummer / first Driver Letter
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| 124 | End;
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| 125 |
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| 126 | Begin (* uQueryCDRom *)
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| 127 | /************************************
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| 128 | * Vorbelegungen
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| 129 | *
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| 130 | * initial assignments
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| 131 | ************************************/
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| 132 | ulCDRomCount := 0;
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| 133 | ulFirstCDRomDiskNo := 0;
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| 134 |
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| 135 | ulParams := 0;
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| 136 |
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| 137 | /************************************
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| 138 | * die beiden Devices abarbeiten
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| 139 | *
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| 140 | * accessing both Devices
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| 141 | ************************************/
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| 142 | For cCurDriver := '1' To '2' Do
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| 143 | Begin
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| 144 | /************************************
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| 145 | * Device oeffnen
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| 146 | *
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| 147 | * open Device
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| 148 | ************************************/
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| 149 | cszDriverName[6] := cCurDriver;
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| 150 | If (DosOpen(cszDriverName, // Devicename
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| 151 | hDevHandle, // Handle
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| 152 | ulAction, // Aktionscode
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| 153 | 0, // Dateigráe
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| 154 | FILE_NORMAL, // Attribute: read/write
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| 155 | OPEN_ACTION_OPEN_IF_EXISTS, // OpenFlag: ffnen, wenn vorhanden
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| 156 | OPEN_FLAGS_FAIL_ON_ERROR Or // Modus: Fehlermeldung per Returncode
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| 157 | OPEN_SHARE_DENYNONE Or // keine Einschrnkungen fr Dritte
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| 158 | OPEN_ACCESS_READONLY, // nur lesender Zugriff
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| 159 | NIL)=NO_ERROR) Then // keine EA
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| 160 | Begin
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| 161 | /************************************
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| 162 | * IOCtl-Funktion aufrufen
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| 163 | *
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| 164 | * Call to IOCtl
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| 165 | ************************************/
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| 166 | If (DosDevIOCtl(hDevHandle, // Handle / Handle
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| 167 | $82, // Kategorie / Category
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| 168 | $60, // Funktion / Function
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| 169 | NIL, // keine Parameterliste / No Parameterlist
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| 170 | 0, // Laenge Parameterliste / Length of Parameterlist
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| 171 | ulParams, // Groesse der gelieferten Parameterdaten
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| 172 | // / Number of Bytes for Parameterdata
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| 173 | rCDInfo, // Puffer fuer gelieferte Daten
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| 174 | // / Buffer for returned Data
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| 175 | SizeOf(rCDInfo), // Groesse des Datenpuffers
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| 176 | // / Size of Databuffer
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| 177 | ulData)=NO_ERROR) Then // Groesse der gelieferten Daten
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| 178 | // / Number of Bytes for returned Data
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| 179 | Begin
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| 180 | ulCDRomCount := rCDInfo.usCDRomCount;
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| 181 | ulFirstCDRomDiskNo := Succ(rCDInfo.usFirstUnitNo);
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| 182 | End;
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| 183 |
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| 184 | DosClose(hDevHandle);
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| 185 | End;
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| 186 |
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| 187 | End; (* For *)
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| 188 |
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| 189 | End; (* uQueryCDRom *)
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| 190 |
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| 191 |
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| 192 | Function GetLocalDriveType( DriveNumber: longint ): TDriveType;
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| 193 | var
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| 194 | IOCtlParameters: Word;
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| 195 | rc: APIRET;
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| 196 | ParameterLength: longWord;
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| 197 | DataLength: longword;
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| 198 | DeviceData: TDeviceParameters;
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| 199 | Fixed: boolean;
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| 200 | FirstCDDrive: ULONG;
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| 201 | NumCDDrives: ULONG;
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| 202 | begin
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| 203 |
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| 204 | TWord( IOCtlParameters ).LoByte := 0; // BPB of physical Device
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| 205 | TWord( IOCtlParameters ).HiByte := DriveNumber - 1; // drive number, zero base
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| 206 |
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| 207 | ParameterLength := SizeOf( IOCtlParameters ); // input length of parameters
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| 208 | DataLength := 0; // input length of data (none)
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| 209 |
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| 210 | rc := DosDevIOCTL( HFILE(-1), // Open Device (not a file)
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| 211 | IOCTL_DISK, // Category
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| 212 | DSK_GETDEVICEPARAMS, // Function
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| 213 | IOCtlParameters, // Parameters
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| 214 | SizeOf( IOCtlParameters ), // (max) size of parameters
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| 215 | ParameterLength, // parameters length
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| 216 | DeviceData, // results
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| 217 | SizeOf( DeviceData ), // (max) size of data block
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| 218 | DataLength ); // data block length
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| 219 |
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| 220 | Fixed := ( DeviceData.Attributes and 1 ) > 0; // bit 0 indicates fixed (1) or removable (0)
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| 221 | if not Fixed then
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| 222 | begin
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| 223 | result := dtRemovable;
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| 224 |
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| 225 | QueryCDRoms( FirstCDDrive,
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| 226 | NumCDDrives );
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| 227 |
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| 228 | if ( DriveNumber >= FirstCDDrive )
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| 229 | and ( DriveNumber < FirstCDDrive + NumCDDrives ) then
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| 230 | result := dtCD;
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| 231 |
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| 232 | exit;
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| 233 | end;
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| 234 |
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| 235 | result := dtHard;
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| 236 | end;
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| 237 |
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| 238 | // Takes a one-based drive number
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| 239 | Function GetDriveType( DriveNumber: longint ): TDriveType;
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| 240 | var
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| 241 | szDrive: CString;
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| 242 |
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| 243 | FSData: array[ 0..sizeof( FSQBuffer) + 3*_MAX_PATH ] of char;
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| 244 | pBuffer: PFSQBUFFER2;
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| 245 | FSDataLength: ULONG;
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| 246 |
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| 247 | rc: APIRET;
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| 248 | begin
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| 249 | assert( DriveNumber >= 1 );
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| 250 | assert( DriveNumber <= 26 );
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| 251 |
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| 252 | if ( DriveNumber >=1 ) and ( DriveNumber <= 2 ) then
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| 253 | begin
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| 254 | if IsFloppyDrive( DriveNumber ) then
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| 255 | begin
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| 256 | result := dtFloppy;
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| 257 | exit;
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| 258 | end;
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| 259 |
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| 260 | result := dtNone; // don't let OS/2 try a fake B: drive
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| 261 | exit;
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| 262 | end;
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| 263 |
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| 264 | DosErrorAPI( FERR_DISABLEHARDERR );
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| 265 |
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| 266 | szDrive := DriveNumberToLetter( DriveNumber ) + ':';
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| 267 | FSDataLength := sizeof( FSData );
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| 268 | pBuffer := Addr( FSData );
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| 269 | rc := _DosQueryFSAttach( szDrive,
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| 270 | 0, // ignored
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| 271 | FSAIL_QUERYNAME,
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| 272 | pBuffer,
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| 273 | FSDataLength );
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| 274 |
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| 275 | if rc = 0 then
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| 276 | begin
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| 277 | case pBuffer^.iType of
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| 278 | FSAT_REMOTEDRV:
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| 279 | result := dtNetwork;
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| 280 |
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| 281 | FSAT_LOCALDRV:
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| 282 | // Figure out what kind of local drive it is...
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| 283 | result := GetLocalDriveType( DriveNumber );
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| 284 |
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| 285 | else
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| 286 | begin
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| 287 | // should never happen
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| 288 | result := dtNone;
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| 289 | exit;
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| 290 | end;
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| 291 | end;
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| 292 | end
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| 293 | else if rc = ERROR_NOT_READY then
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| 294 | begin
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| 295 | // No media?
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| 296 | // Have a look for a local disk anyway.
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| 297 | result := GetLocalDriveType( DriveNumber );
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| 298 | end
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| 299 | else
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| 300 | begin
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| 301 | result := dtNone;
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| 302 | end;
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| 303 |
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| 304 | DosErrorAPI( FERR_ENABLEHARDERR );
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| 305 | end;
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| 306 |
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| 307 | const
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| 308 | DEVLEN = 8;
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| 309 | CNLEN = 15; // Computer name length
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| 310 | UNCLEN = (CNLEN+2); // UNC computer name length
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| 311 | NNLEN = 12; // 8.3 Net name length (share name length)
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| 312 | RMLEN = (UNCLEN+1+NNLEN); // Maximum remote name length
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| 313 |
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| 314 | type
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| 315 | use_info_0 = record
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| 316 | ui0_local: cstring[ DEVLEN ]; // note this is of size DEVLEN + 1
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| 317 | ui0_pad_1: char;
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| 318 | ui0_remote: pchar;
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| 319 | space: array[ 0..RMLEN ] of char; // remote path is written to somewhere in here
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| 320 | end;
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| 321 |
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| 322 | use_info_1 = record
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| 323 | ui0_local: cstring[ DEVLEN ];
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| 324 | ui0_pad_1: char;
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| 325 | ui0_remote: pchar; // address of a buffer to hold remote path
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| 326 | ui1_password: pchar; //
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| 327 | ui1_status: USHORT;
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| 328 | ui1_asg_type: SHORT;
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| 329 | ui1_refcount: USHORT;
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| 330 | ui1_usecount: USHORT;
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| 331 | space: array[ 0..RMLEN ] of char; // remote path is written to somewhere in here
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| 332 | end;
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| 333 |
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| 334 | TNet32UseGetInfo = Function( pszServer: pchar;
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| 335 | pszUseName: pchar; // e.g. drive x:
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| 336 | ulLevel: ULONG;
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| 337 | pbBuffer: pointer; // pointer to output buffer
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| 338 | ulBuffer: ULONG; // size of output in buffer
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| 339 | Var pulTotalAvail: ULONG )
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| 340 | : word; CDecl;
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| 341 |
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| 342 | Var
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| 343 | Net32UseGetInfo: TNet32UseGetInfo;
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| 344 | hNetAPI32DLL: HMODULE;
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| 345 | TriedLoading: boolean;
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| 346 |
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| 347 | // 129 Net32UseGetInfo
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| 348 | Function GetNetworkDriveRemotePath( DriveNumber: longint ): string;
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| 349 | var
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| 350 | ErrorName: array[ 0..255 ] of char;
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| 351 | dummy: cstring;
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| 352 | rc: word;
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| 353 | UseName: array[ 0..255 ] of char;
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| 354 | UseInfo: use_info_0;
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| 355 | pUseInfo: pointer;
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| 356 | TotalBytesNeeded: ULONG;
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| 357 | RemotePath: array[ 0..255 ] of char;
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| 358 | Dummy2: array[ 0..4096 ] of char; // try to fix stack probs
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| 359 | begin
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| 360 | Result := '';
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| 361 |
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| 362 | if not TriedLoading then
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| 363 | begin
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| 364 | TriedLoading := true;
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| 365 | rc := DosLoadModule( ErrorName,
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| 366 | sizeof( ErrorName ),
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| 367 | 'NETAPI32',
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| 368 | hNetAPI32DLL );
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| 369 | if rc = NO_ERROR then
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| 370 | begin
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| 371 | // NetAPI32.DLL loaded OK
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| 372 | rc := DosQueryProcAddr( hNetAPI32DLL,
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| 373 | 129,
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| 374 | dummy,
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| 375 | pointer( Net32UseGetInfo ) );
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| 376 | if rc <> 0 then
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| 377 | Net32UseGetInfo := nil;
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| 378 | end;
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| 379 | end;
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| 380 |
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| 381 | if Assigned( Net32UseGetInfo ) then
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| 382 | begin
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| 383 | UseName[ 0 ] := DriveNumberToLetter( DriveNumber );
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| 384 | UseName[ 1 ] := ':';
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| 385 | UseName[ 2 ] := #0;
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| 386 |
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| 387 | RemotePath[ 0 ] := #0;
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| 388 | // UseInfo.ui0_remote := Addr( RemotePath );
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| 389 |
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| 390 | pUseInfo := Addr( UseInfo );
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| 391 | rc := Net32UseGetInfo( nil, // server - always nil
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| 392 | Addr( UseName ),
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| 393 | 0, // info level 0
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| 394 | pUseInfo,
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| 395 | sizeof( UseInfo ),
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| 396 | TotalBytesNeeded );
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| 397 |
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| 398 | if rc = 0 then
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| 399 | Result := StrPas( UseInfo.ui0_remote );
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| 400 |
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| 401 | end;
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| 402 | end;
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| 403 |
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| 404 | end.
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