-BOOL i386DiskGetBootVolume(PULONG DriveNumber, PULONGLONG StartSector, PULONGLONG SectorCount, int *FsType)
-{
- PARTITION_TABLE_ENTRY PartitionTableEntry;
- UCHAR VolumeType;
-
- DbgPrint((DPRINT_FILESYSTEM, "FsOpenVolume() DriveNumber: 0x%x PartitionNumber: 0x%x\n", i386BootDrive, i386BootPartition));
-
- // Check and see if it is a floppy drive
- // If so then just assume FAT12 file system type
- if (DiskIsDriveRemovable(i386BootDrive))
- {
- DbgPrint((DPRINT_FILESYSTEM, "Drive is a floppy diskette drive. Assuming FAT12 file system.\n"));
-
- *DriveNumber = i386BootDrive;
- *StartSector = 0;
- *SectorCount = 2 * 80 * 18; /* FIXME hardcoded for 1.44 Mb */
- *FsType = FS_FAT;
- return TRUE;
- }
-
- // Check for ISO9660 file system type
- if (i386BootDrive >= 0x80 && FsRecIsIso9660(i386BootDrive))
- {
- DbgPrint((DPRINT_FILESYSTEM, "Drive is a cdrom drive. Assuming ISO-9660 file system.\n"));
-
- *DriveNumber = i386BootDrive;
- *StartSector = 0;
- *SectorCount = 0;
- *FsType = FS_ISO9660;
- return TRUE;
- }
-
- // Get the requested partition entry
- if (i386BootPartition == 0)
- {
- // Partition requested was zero which means the boot partition
- if (! DiskGetActivePartitionEntry(i386BootDrive, &PartitionTableEntry))
- {
- return FALSE;
- }
- }
- else
- {
- // Get requested partition
- if (! MachDiskGetPartitionEntry(i386BootDrive, i386BootPartition, &PartitionTableEntry))
- {
- return FALSE;
- }
- }
-
- // Check for valid partition
- if (PartitionTableEntry.SystemIndicator == PARTITION_ENTRY_UNUSED)
- {
- return FALSE;
- }
-
- // Try to recognize the file system
- if (!FsRecognizeVolume(i386BootDrive, PartitionTableEntry.SectorCountBeforePartition, &VolumeType))
- {
- return FALSE;
- }
-
- *DriveNumber = i386BootDrive;
- *StartSector = PartitionTableEntry.SectorCountBeforePartition;
- *SectorCount = PartitionTableEntry.PartitionSectorCount;
-
- //switch (PartitionTableEntry.SystemIndicator)
- switch (VolumeType)
- {
- case PARTITION_FAT_12:
- case PARTITION_FAT_16:
- case PARTITION_HUGE:
- case PARTITION_XINT13:
- case PARTITION_FAT32:
- case PARTITION_FAT32_XINT13:
- *FsType = FS_FAT;
- return TRUE;
- case PARTITION_EXT2:
- *FsType = FS_EXT2;
- return TRUE;
- case PARTITION_NTFS:
- *FsType = FS_NTFS;
- return TRUE;
- default:
- *FsType = 0;
- return FALSE;
- }
-
- return TRUE;
-}
-
-VOID
-i386DiskGetBootDevice(PULONG BootDevice)
-{
- ((char *)BootDevice)[0] = (char)i386BootDrive;
- ((char *)BootDevice)[1] = (char)i386BootPartition;
-}
-
-BOOL
-i386DiskBootingFromFloppy(VOID)
-{
- return i386BootDrive < 0x80;
-}
-
-#define IsRecognizedPartition(P) \
- ((P) == PARTITION_FAT_12 || \
- (P) == PARTITION_FAT_16 || \
- (P) == PARTITION_HUGE || \
- (P) == PARTITION_IFS || \
- (P) == PARTITION_EXT2 || \
- (P) == PARTITION_FAT32 || \
- (P) == PARTITION_FAT32_XINT13 || \
- (P) == PARTITION_XINT13)
-
-BOOL i386DiskGetSystemVolume(char *SystemPath,
- char *RemainingPath,
- PULONG Device,
- PULONG DriveNumber,
- PULONGLONG StartSector,
- PULONGLONG SectorCount,
- int *FsType)
-{
- ULONG PartitionNumber;
- PARTITION_TABLE_ENTRY PartitionTableEntry;
- UCHAR VolumeType;
- CHAR BootPath[256];
- unsigned i, RosPartition;
-
- /*
- * Verify system path
- */
- if (!DissectArcPath(SystemPath, BootPath, DriveNumber, &PartitionNumber))
- {
- return FALSE;
- }
- if (NULL != RemainingPath)
- {
- strcpy(RemainingPath, BootPath);
- }
-
- /* 0xff -> no partition table present, use whole device */
- if (0xff == PartitionNumber)
- {
- PartitionTableEntry.SectorCountBeforePartition = 0;
- i = 0xff;
- }
- else
- {
- /* recalculate the boot partition for freeldr */
- i = 0;
- RosPartition = 0;
- while (1)
- {
- if (!MachDiskGetPartitionEntry(*DriveNumber, ++i, &PartitionTableEntry))
- {
- return FALSE;
- }
- if (IsRecognizedPartition(PartitionTableEntry.SystemIndicator))
- {
- if (++RosPartition == PartitionNumber)
- {
- break;
- }
- }
- }
- }
-
- /* Check for ISO9660 file system type */
- if (*DriveNumber >= 0x80 && FsRecIsIso9660(*DriveNumber))
- {
- DbgPrint((DPRINT_FILESYSTEM, "Drive is a cdrom drive. Assuming ISO-9660 file system.\n"));
-
- if (NULL != Device)
- {
- ((char *)Device)[0] = (char)(*DriveNumber);
- ((char *)Device)[1] = (char)i;
- }
- *StartSector = 0;
- *SectorCount = 0;
- *FsType = FS_ISO9660;
- return TRUE;
- }
-
- if (!FsRecognizeVolume(*DriveNumber, PartitionTableEntry.SectorCountBeforePartition, &VolumeType))
- {
- return FALSE;
- }
-
- if (NULL != Device)
- {
- ((char *)Device)[0] = (char)(*DriveNumber);
- ((char *)Device)[1] = (char)i;
- }
- *StartSector = PartitionTableEntry.SectorCountBeforePartition;
- *SectorCount = PartitionTableEntry.PartitionSectorCount;
-
- switch (VolumeType)
- {
- case PARTITION_FAT_12:
- case PARTITION_FAT_16:
- case PARTITION_HUGE:
- case PARTITION_XINT13:
- case PARTITION_FAT32:
- case PARTITION_FAT32_XINT13:
- *FsType = FS_FAT;
- return TRUE;
- case PARTITION_EXT2:
- *FsType = FS_EXT2;
- return TRUE;
- case PARTITION_NTFS:
- *FsType = FS_NTFS;
- return TRUE;
- default:
- *FsType = 0;
- return FALSE;
- }
-
- return FALSE;
-}
-
-BOOL
-i386DiskGetBootPath(char *BootPath, unsigned Size)
-{
- static char Path[] = "multi(0)disk(0)";
- char Device[4];
-
- itoa(i386BootDrive, Device, 10);
- if (Size <= sizeof(Path) + 6 + strlen(Device))
- {
- return FALSE;
- }
- strcpy(BootPath, Path);
- strcat(BootPath, MachDiskBootingFromFloppy() ? "fdisk" : "cdrom");
- strcat(strcat(strcat(BootPath, "("), Device), ")");
-
- return TRUE;
-}
-
-#endif /* defined __i386__ */
-
-/* EOF */
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