#ifndef _FAT_H_
#define _FAT_H_
+#include <asm/byteorder.h>
+
#define CONFIG_SUPPORT_VFAT
#define SECTOR_SIZE FS_BLOCK_SIZE
#define ATTR_VFAT (ATTR_RO | ATTR_HIDDEN | ATTR_SYS | ATTR_VOLUME)
#define DELETED_FLAG ((char)0xe5) /* Marks deleted files when in name[0] */
-#define aRING 0x05 /* Used to represent 'å' in name[0] */
+#define aRING 0x05 /* Used as special character in name[0] */
/* Indicates that the entry is the last long entry in a set of long
* dir entries
#else
#define FAT2CPU16(x) ((((x) & 0x00ff) << 8) | (((x) & 0xff00) >> 8))
#define FAT2CPU32(x) ((((x) & 0x000000ff) << 24) | \
- (((x) & 0x0000ff00) << 8) | \
+ (((x) & 0x0000ff00) << 8) | \
(((x) & 0x00ff0000) >> 8) | \
(((x) & 0xff000000) >> 24))
#endif
#define START(dent) (FAT2CPU16((dent)->start) \
+ (mydata->fatsize != 32 ? 0 : \
(FAT2CPU16((dent)->starthi) << 16)))
-
+#define CHECK_CLUST(x, fatsize) ((x) <= 1 || \
+ (x) >= ((fatsize) != 32 ? 0xfff0 : 0xffffff0))
typedef struct boot_sector {
__u8 ignored[3]; /* Bootstrap code */
__u8 name11_12[4]; /* Last 2 characters in name */
} dir_slot;
-/* Private filesystem parameters */
+/* Private filesystem parameters
+ *
+ * Note: FAT buffer has to be 32 bit aligned
+ * (see FAT32 accesses)
+ */
typedef struct {
+ __u8 fatbuf[FATBUFSIZE]; /* Current FAT buffer */
int fatsize; /* Size of FAT in bits */
__u16 fatlength; /* Length of FAT in sectors */
__u16 fat_sect; /* Starting sector of the FAT */
__u16 rootdir_sect; /* Start sector of root directory */
__u16 clust_size; /* Size of clusters in sectors */
short data_begin; /* The sector of the first cluster, can be negative */
- __u8 fatbuf[FATBUFSIZE]; /* Current FAT buffer */
int fatbufnum; /* Used by get_fatent, init to -1 */
} fsdata;