initial import

1 files changed, 46 insertions, 0 deletions

diff --git a/inc/mbr.h b/inc/mbr.h
new file mode 100644
index 0000000..d45727d
--- /dev/null
+++ b/inc/mbr.h
@@ -0,0 +1,46 @@
+#ifndef MBR_H
+#define MBR_H
+
+#include "sassert.h"
+
+enum MBR_PARTTYPE
+{
+	MBR_EMPTY      = 0,
+	MBR_FAT12      = 0x01,
+	MBR_FAT16_32MB = 0x04,
+	MBR_EXT        = 0x05,
+	MBR_FAT16      = 0x06,
+	MBR_IFS        = 0x07,
+	MBR_FAT32      = 0x0B,
+	MBR_FAT32_LBA  = 0x0C,
+	MBR_FAT16_LBA  = 0x0E,
+	MBR_EXT_LBA    = 0x0F,
+	MBR_LINUX_SWAP = 0x82,
+	MBR_LINUX      = 0x83,
+};
+
+typedef _Packed struct MBR_CHS
+{
+	uint8_t head;
+	unsigned sector : 6;
+	unsigned cyl : 10;
+} MBR_CHS;
+
+STATIC_ASSERT(sizeof(MBR_CHS) == 3);
+
+typedef _Packed struct MBR_PARTENTRY
+{
+	uint8_t status;
+	MBR_CHS chsFirst;
+	uint8_t type;
+	MBR_CHS chsLast;
+	uint32_t lbaFirst;
+	uint32_t lbaLen;
+} MBR_PARTENTRY;
+
+STATIC_ASSERT(sizeof(MBR_PARTENTRY) == 16);
+
+#define MBR_PARTENTRY_OFFSET_ON_DISK 446
+#define MBR_SIGNATURE_OFFSET_ON_DISK 510
+
+#endif // MBR_H