#include <freeldr.h>
#include <debug.h>
-DBG_DEFAULT_CHANNEL(WARNING);
+DBG_DEFAULT_CHANNEL(DISK);
-BOOLEAN DriveMapInstalled = FALSE; // Tells us if we have already installed our drive map int 13h handler code
-ULONG OldInt13HandlerAddress = 0; // Address of BIOS int 13h handler
-ULONG DriveMapHandlerAddress = 0; // Linear address of our drive map handler
-ULONG DriveMapHandlerSegOff = 0; // Segment:offset style address of our drive map handler
+BOOLEAN DriveMapInstalled = FALSE; // Tells us if we have already installed our drive map int 13h handler code
+ULONG OldInt13HandlerAddress = 0; // Address of BIOS int 13h handler
+ULONG DriveMapHandlerAddress = 0; // Linear address of our drive map handler
+ULONG DriveMapHandlerSegOff = 0; // Segment:offset style address of our drive map handler
-#ifndef _MSC_VER
VOID DriveMapMapDrivesInSection(PCSTR SectionName)
{
- CHAR SettingName[80];
- CHAR SettingValue[80];
- CHAR ErrorText[260];
- CHAR Drive1[80];
- CHAR Drive2[80];
- ULONG SectionId;
- ULONG SectionItemCount;
- ULONG Index;
- ULONG Index2;
- DRIVE_MAP_LIST DriveMapList;
-
- RtlZeroMemory(&DriveMapList, sizeof(DRIVE_MAP_LIST));
-
- if (!IniOpenSection(SectionName, &SectionId))
- {
- return;
- }
-
- // Get the number of items in this section
- SectionItemCount = IniGetNumSectionItems(SectionId);
-
- // Loop through each one and check if its a DriveMap= setting
- for (Index=0; Index<SectionItemCount; Index++)
- {
- // Get the next setting from the .ini file section
- if (IniReadSettingByNumber(SectionId, Index, SettingName, sizeof(SettingName), SettingValue, sizeof(SettingValue)))
- {
- if (_stricmp(SettingName, "DriveMap") == 0)
- {
- // Make sure we haven't exceeded the drive map max count
- if (DriveMapList.DriveMapCount >= 4)
- {
- sprintf(ErrorText, "Max DriveMap count exceeded in section [%s]:\n\n%s=%s", SectionName, SettingName, SettingValue);
- UiMessageBox(ErrorText);
- continue;
- }
-
- RtlZeroMemory(Drive1, 80);
- RtlZeroMemory(Drive2, 80);
-
- strcpy(Drive1, SettingValue);
-
- // Parse the setting value and separate a string "hd0,hd1"
- // into two strings "hd0" and "hd1"
- for (Index2=0; Index2<strlen(Drive1); Index2++)
- {
- // Check if this character is the separater character (comma - ',')
- if (Drive1[Index2] == ',')
- {
- Drive1[Index2] = '\0';
- strcpy(Drive2, &Drive1[Index2+1]);
- break;
- }
- }
-
- // Make sure we got good values before we add them to the map
- if (!DriveMapIsValidDriveString(Drive1) || !DriveMapIsValidDriveString(Drive2))
- {
- sprintf(ErrorText, "Error in DriveMap setting in section [%s]:\n\n%s=%s", SectionName, SettingName, SettingValue);
- UiMessageBox(ErrorText);
- continue;
- }
-
- // Add them to the map
- DriveMapList.DriveMap[(DriveMapList.DriveMapCount * 2)] = DriveMapGetBiosDriveNumber(Drive1);
- DriveMapList.DriveMap[(DriveMapList.DriveMapCount * 2)+1] = DriveMapGetBiosDriveNumber(Drive2);
- DriveMapList.DriveMapCount++;
-
- TRACE("Mapping BIOS drive 0x%x to drive 0x%x\n", DriveMapGetBiosDriveNumber(Drive1), DriveMapGetBiosDriveNumber(Drive2));
- }
- }
- }
-
- if (DriveMapList.DriveMapCount)
- {
- TRACE("Installing Int13 drive map for %d drives.\n", DriveMapList.DriveMapCount);
- DriveMapInstallInt13Handler(&DriveMapList);
- }
- else
- {
- TRACE("Removing any previously installed Int13 drive map.\n");
- DriveMapRemoveInt13Handler();
- }
+ CHAR SettingName[80];
+ CHAR SettingValue[80];
+ CHAR Drive1[80];
+ CHAR Drive2[80];
+ ULONG_PTR SectionId;
+ ULONG SectionItemCount;
+ ULONG Index;
+ ULONG Index2;
+ DRIVE_MAP_LIST DriveMapList;
+
+ RtlZeroMemory(&DriveMapList, sizeof(DRIVE_MAP_LIST));
+
+ if (!IniOpenSection(SectionName, &SectionId))
+ {
+ return;
+ }
+
+ // Get the number of items in this section
+ SectionItemCount = IniGetNumSectionItems(SectionId);
+
+ // Loop through each one and check if its a DriveMap= setting
+ for (Index=0; Index<SectionItemCount; Index++)
+ {
+ // Get the next setting from the .ini file section
+ if (IniReadSettingByNumber(SectionId, Index, SettingName, sizeof(SettingName), SettingValue, sizeof(SettingValue)))
+ {
+ if (_stricmp(SettingName, "DriveMap") == 0)
+ {
+ // Make sure we haven't exceeded the drive map max count
+ if (DriveMapList.DriveMapCount >= 4)
+ {
+ UiMessageBox("Max DriveMap count exceeded in section [%s]:\n\n%s=%s", SectionName, SettingName, SettingValue);
+ continue;
+ }
+
+ RtlZeroMemory(Drive1, 80);
+ RtlZeroMemory(Drive2, 80);
+
+ strcpy(Drive1, SettingValue);
+
+ // Parse the setting value and separate a string "hd0,hd1"
+ // into two strings "hd0" and "hd1"
+ for (Index2=0; Index2<strlen(Drive1); Index2++)
+ {
+ // Check if this character is the separater character (comma - ',')
+ if (Drive1[Index2] == ',')
+ {
+ Drive1[Index2] = '\0';
+ strcpy(Drive2, &Drive1[Index2+1]);
+ break;
+ }
+ }
+
+ // Make sure we got good values before we add them to the map
+ if (!DriveMapIsValidDriveString(Drive1) || !DriveMapIsValidDriveString(Drive2))
+ {
+ UiMessageBox("Error in DriveMap setting in section [%s]:\n\n%s=%s", SectionName, SettingName, SettingValue);
+ continue;
+ }
+
+ // Add them to the map
+ DriveMapList.DriveMap[(DriveMapList.DriveMapCount * 2)] = DriveMapGetBiosDriveNumber(Drive1);
+ DriveMapList.DriveMap[(DriveMapList.DriveMapCount * 2)+1] = DriveMapGetBiosDriveNumber(Drive2);
+ DriveMapList.DriveMapCount++;
+
+ TRACE("Mapping BIOS drive 0x%x to drive 0x%x\n", DriveMapGetBiosDriveNumber(Drive1), DriveMapGetBiosDriveNumber(Drive2));
+ }
+ }
+ }
+
+ if (DriveMapList.DriveMapCount)
+ {
+ TRACE("Installing Int13 drive map for %d drives.\n", DriveMapList.DriveMapCount);
+ DriveMapInstallInt13Handler(&DriveMapList);
+ }
+ else
+ {
+ TRACE("Removing any previously installed Int13 drive map.\n");
+ DriveMapRemoveInt13Handler();
+ }
}
BOOLEAN DriveMapIsValidDriveString(PCSTR DriveString)
{
- ULONG Index;
-
- // Now verify that the user has given us appropriate strings
- if ((strlen(DriveString) < 3) ||
- ((DriveString[0] != 'f') && (DriveString[0] != 'F') && (DriveString[0] != 'h') && (DriveString[0] != 'H')) ||
- ((DriveString[1] != 'd') && (DriveString[1] != 'D')))
- {
- return FALSE;
- }
-
- // Now verify that the user has given us appropriate numbers
- // Make sure that only numeric characters were given
- for (Index=2; Index<strlen(DriveString); Index++)
- {
- if (DriveString[Index] < '0' || DriveString[Index] > '9')
- {
- return FALSE;
- }
- }
- // Now make sure that they are not outrageous values (i.e. hd90874)
- if ((atoi(&DriveString[2]) < 0) || (atoi(&DriveString[2]) > 0xff))
- {
- return FALSE;
- }
-
- return TRUE;
+ ULONG Index;
+
+ // Now verify that the user has given us appropriate strings
+ if ((strlen(DriveString) < 3) ||
+ ((DriveString[0] != 'f') && (DriveString[0] != 'F') &&
+ (DriveString[0] != 'h') && (DriveString[0] != 'H')) ||
+ ((DriveString[1] != 'd') && (DriveString[1] != 'D')))
+ {
+ return FALSE;
+ }
+
+ // Now verify that the user has given us appropriate numbers
+ // Make sure that only numeric characters were given
+ for (Index = 2; Index < strlen(DriveString); Index++)
+ {
+ if (DriveString[Index] < '0' || DriveString[Index] > '9')
+ {
+ return FALSE;
+ }
+ }
+
+ // Now make sure that they are not outrageous values (i.e. hd90874)
+ if ((atoi(&DriveString[2]) < 0) || (atoi(&DriveString[2]) > 0xff))
+ {
+ return FALSE;
+ }
+
+ return TRUE;
}
-#endif
UCHAR DriveMapGetBiosDriveNumber(PCSTR DeviceName)
{
- UCHAR BiosDriveNumber = 0;
-
- // If they passed in a number string then just
- // convert it to decimal and return it
- if (DeviceName[0] >= '0' && DeviceName[0] <= '9')
- {
- return atoi(DeviceName);
- }
-
- // Convert the drive number string into a number
- // 'hd1' = 1
- BiosDriveNumber = atoi(&DeviceName[2]);
-
- // If it's a hard disk then set the high bit
- if ((DeviceName[0] == 'h' || DeviceName[0] == 'H') &&
- (DeviceName[1] == 'd' || DeviceName[1] == 'D'))
- {
- BiosDriveNumber |= 0x80;
- }
-
- return BiosDriveNumber;
+ UCHAR BiosDriveNumber = 0;
+
+ TRACE("DriveMapGetBiosDriveNumber(%s)\n", DeviceName);
+
+ // If they passed in a number string then just
+ // convert it to decimal and return it
+ if (DeviceName[0] >= '0' && DeviceName[0] <= '9')
+ {
+ return (UCHAR)strtoul(DeviceName, NULL, 0);
+ }
+
+ // Convert the drive number string into a number
+ // 'hd1' = 1
+ BiosDriveNumber = atoi(&DeviceName[2]);
+
+ // If it's a hard disk then set the high bit
+ if ((DeviceName[0] == 'h' || DeviceName[0] == 'H') &&
+ (DeviceName[1] == 'd' || DeviceName[1] == 'D'))
+ {
+ BiosDriveNumber |= 0x80;
+ }
+
+ return BiosDriveNumber;
}
-#ifndef _MSC_VER
VOID DriveMapInstallInt13Handler(PDRIVE_MAP_LIST DriveMap)
{
- ULONG* RealModeIVT = (ULONG*)0x00000000;
- USHORT* BiosLowMemorySize = (USHORT*)0x00000413;
+ ULONG* RealModeIVT = (ULONG*)UlongToPtr(0x00000000);
+ USHORT* BiosLowMemorySize = (USHORT*)ULongToPtr(0x00000413);
- if (!DriveMapInstalled)
- {
- // Get the old INT 13h handler address from the vector table
- OldInt13HandlerAddress = RealModeIVT[0x13];
+ if (!DriveMapInstalled)
+ {
+ // Get the old INT 13h handler address from the vector table
+ OldInt13HandlerAddress = RealModeIVT[0x13];
- // Decrease the size of low memory
- (*BiosLowMemorySize)--;
+ // Decrease the size of low memory
+ (*BiosLowMemorySize)--;
- // Get linear address for drive map handler
- DriveMapHandlerAddress = (ULONG)(*BiosLowMemorySize) << 10;
+ // Get linear address for drive map handler
+ DriveMapHandlerAddress = (ULONG)(*BiosLowMemorySize) << 10;
- // Convert to segment:offset style address
- DriveMapHandlerSegOff = (DriveMapHandlerAddress << 12) & 0xffff0000;
- }
+ // Convert to segment:offset style address
+ DriveMapHandlerSegOff = (DriveMapHandlerAddress << 12) & 0xffff0000;
+ }
- // Copy the drive map structure to the proper place
- RtlCopyMemory(&DriveMapInt13HandlerMapList, DriveMap, sizeof(DRIVE_MAP_LIST));
+ // Copy the drive map structure to the proper place
+ RtlCopyMemory(&DriveMapInt13HandlerMapList, DriveMap, sizeof(DRIVE_MAP_LIST));
- // Set the address of the BIOS INT 13h handler
- DriveMapOldInt13HandlerAddress = OldInt13HandlerAddress;
+ // Set the address of the BIOS INT 13h handler
+ DriveMapOldInt13HandlerAddress = OldInt13HandlerAddress;
- // Copy the code to our reserved area
- RtlCopyMemory((PVOID)DriveMapHandlerAddress, &DriveMapInt13HandlerStart, ((ULONG)&DriveMapInt13HandlerEnd - (ULONG)&DriveMapInt13HandlerStart));
+ // Copy the code to our reserved area
+ RtlCopyMemory(UlongToPtr(DriveMapHandlerAddress),
+ &DriveMapInt13HandlerStart,
+ ((PUCHAR)&DriveMapInt13HandlerEnd - (PUCHAR)&DriveMapInt13HandlerStart));
- // Update the IVT
- RealModeIVT[0x13] = DriveMapHandlerSegOff;
+ // Update the IVT
+ RealModeIVT[0x13] = DriveMapHandlerSegOff;
- CacheInvalidateCacheData();
- DriveMapInstalled = TRUE;
+ CacheInvalidateCacheData();
+ DriveMapInstalled = TRUE;
}
VOID DriveMapRemoveInt13Handler(VOID)
{
- ULONG* RealModeIVT = (ULONG*)0x00000000;
- USHORT* BiosLowMemorySize = (USHORT*)0x00000413;
+ ULONG* RealModeIVT = (ULONG*)0x00000000;
+ USHORT* BiosLowMemorySize = (USHORT*)0x00000413;
- if (DriveMapInstalled)
- {
- // Get the old INT 13h handler address from the vector table
- RealModeIVT[0x13] = OldInt13HandlerAddress;
+ if (DriveMapInstalled)
+ {
+ // Get the old INT 13h handler address from the vector table
+ RealModeIVT[0x13] = OldInt13HandlerAddress;
- // Increase the size of low memory
- (*BiosLowMemorySize)++;
+ // Increase the size of low memory
+ (*BiosLowMemorySize)++;
- CacheInvalidateCacheData();
- DriveMapInstalled = FALSE;
- }
+ CacheInvalidateCacheData();
+ DriveMapInstalled = FALSE;
+ }
}
-#endif
projects / reactos.git / blobdiff