#define VFAT_MAXSEQ 9 /* Up to 9 of 13 2-byte UTF-16 entries */
#define PREFETCH_BLOCKS 2
-#define MAX_CLUSTSIZE 65536
+#ifndef CONFIG_FS_FAT_MAX_CLUSTSIZE
+#define CONFIG_FS_FAT_MAX_CLUSTSIZE 65536
+#endif
+#define MAX_CLUSTSIZE CONFIG_FS_FAT_MAX_CLUSTSIZE
+
#define DIRENTSPERBLOCK (mydata->sect_size / sizeof(dir_entry))
#define DIRENTSPERCLUST ((mydata->clust_size * mydata->sect_size) / \
sizeof(dir_entry))
#define START(dent) (FAT2CPU16((dent)->start) \
+ (mydata->fatsize != 32 ? 0 : \
(FAT2CPU16((dent)->starthi) << 16)))
+#define IS_LAST_CLUST(x, fatsize) ((x) >= ((fatsize) != 32 ? \
+ ((fatsize) != 16 ? 0xff8 : 0xfff8) : \
+ 0xffffff8))
#define CHECK_CLUST(x, fatsize) ((x) <= 1 || \
- (x) >= ((fatsize) != 32 ? 0xfff0 : 0xffffff0))
+ (x) >= ((fatsize) != 32 ? \
+ ((fatsize) != 16 ? 0xff0 : 0xfff0) : \
+ 0xffffff0))
typedef struct boot_sector {
__u8 ignored[3]; /* Bootstrap code */
int file_cd(const char *path);
int file_fat_detectfs(void);
int file_fat_ls(const char *dir);
+int fat_exists(const char *filename);
+int fat_size(const char *filename);
long file_fat_read_at(const char *filename, unsigned long pos, void *buffer,
unsigned long maxsize);
long file_fat_read(const char *filename, void *buffer, unsigned long maxsize);