Changeset 6d57e1c in mainline for uspace/srv/fs/exfat/exfat.h

Timestamp:

2011-06-27T19:39:06Z (13 years ago)

Author:

Oleg Romanenko <romanenko.oleg@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

620a367

Parents:

efa8ed93

Message:

exFAT:

1. Structure for BootSector
2. Skeleton for mount/umount ops

File:

• uspace/srv/fs/exfat/exfat.h (modified) (1 diff)

uspace/srv/fs/exfat/exfat.h

@@ -49 +49 @@
 #define BS_SIZE                 512
 
+#define BPS(bs)                 (1 << (bs->bytes_per_sector))
+#define SPC(bs)                 (1 << (bs->sec_per_cluster))
+#define VOL_ST(bs)              uint64_t_le2host(bs->volume_start)
+#define VOL_CNT(bs)             uint64_t_le2host(bs->volume_count)
+#define FAT_ST(bs)              uint32_t_le2host(bs->fat_sector_start)
+#define FAT_CNT(bs)             uint32_t_le2host(bs->fat_sector_count)
+#define DATA_ST(bs)             uint32_t_le2host(bs->data_start_sector)
+#define DATA_CNT(bs)    uint32_t_le2host(bs->data_clusters)
+#define ROOT_ST(bs)             uint32_t_le2host(bs->rootdir_cluster)
+#define VOL_FLAGS               uint16_t_le2host(bs->volume_flags)
 
 
+typedef struct exfat_bs {
+        uint8_t jump[3];                                /* 0x00 jmp and nop instructions */
+        uint8_t oem_name[8];                    /* 0x03 "EXFAT   " */
+        uint8_t __reserved[53];                 /* 0x0B always 0 */
+        uint64_t volume_start;                  /* 0x40 partition first sector */
+        uint64_t volume_count;                  /* 0x48 partition sectors count */
+        uint32_t fat_sector_start;              /* 0x50 FAT first sector */
+        uint32_t fat_sector_count;              /* 0x54 FAT sectors count */
+        uint32_t data_start_sector;             /* 0x58 Data region first cluster sector */
+        uint32_t data_clusters;                 /* 0x5C total clusters count */
+        uint32_t rootdir_cluster;               /* 0x60 first cluster of the root dir */
+        uint32_t volume_serial;                 /* 0x64 volume serial number */
+        struct {                                                /* 0x68 FS version */
+                uint8_t minor;
+                uint8_t major;
+        } __attribute__ ((packed)) version;
+        uint16_t volume_flags;                  /* 0x6A volume state flags */
+        uint8_t bytes_per_sector;               /* 0x6C sector size as (1 << n) */
+        uint8_t sec_per_cluster;                /* 0x6D sectors per cluster as (1 << n) */
+        uint8_t fat_count;                              /* 0x6E always 1 */
+        uint8_t drive_no;                               /* 0x6F always 0x80 */
+        uint8_t allocated_percent;              /* 0x70 percentage of allocated space */
+        uint8_t _reserved2[7];                  /* 0x71 reserved */
+        uint8_t bootcode[390];                  /* Boot code */
+        uint16_t signature;                             /* the value of 0xAA55 */
+} __attribute__((__packed__)) exfat_bs_t;
+
+
+extern fs_reg_t exfat_reg;
+
+extern void exfat_mounted(ipc_callid_t, ipc_call_t *);
+extern void exfat_mount(ipc_callid_t, ipc_call_t *);
+extern void exfat_unmounted(ipc_callid_t, ipc_call_t *);
+extern void exfat_unmount(ipc_callid_t, ipc_call_t *);
 
 #endif