Changeset 875edff6 in mainline for uspace/srv/fs/fat/fat.h

Timestamp:

2011-04-30T11:22:28Z (12 years ago)

Author:

Oleg Romanenko <romanenko.oleg@…>

Branches:

lfn, master, serial

Children:

aa2ea13

Parents:

cb052b4

Message:

It is possible to mount FAT32 file system.
Changes:

1. 32bit fat_cluster_t
2. Change macros SF(bs) to add support FAT32 sectors per fat value
3. New macros (FAT_CLST_SIZE) for determining size of FAT cluster (2 or 4 bytes)
4. New macros (FAT_MASK) for determining necessary mask for cluster value depending on FAT type
5. fat_get_cluster support FAT32 and correctly return cluster value
6. Change fat_sanity_check() to add support FAT32. Wrapping explicit use of br→(value) with macros.

TODO need to wrap all explicit use of br→() with appropriated macros.

File:

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

uspace/srv/fs/fat/fat.h

@@ -55 +55 @@
 #define RSCNT(bs)       uint16_t_le2host((bs)->rscnt)
 #define FATCNT(bs)      (bs)->fatcnt
-#define SF(bs)          uint16_t_le2host((bs)->sec_per_fat)
+#define SF(bs)          (uint16_t_le2host((bs)->sec_per_fat) !=0 ? \
+    uint16_t_le2host((bs)->sec_per_fat) : \
+    uint32_t_le2host(bs->fat32.sectors_per_fat))
 #define RDE(bs)         uint16_t_le2host((bs)->root_ent_max)
 #define TS(bs)          (uint16_t_le2host((bs)->totsec16) != 0 ? \