diff options
Diffstat (limited to 'fatfs/fatfs.h')
| -rw-r--r-- | fatfs/fatfs.h | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/fatfs/fatfs.h b/fatfs/fatfs.h index f46695ba..a741d875 100644 --- a/fatfs/fatfs.h +++ b/fatfs/fatfs.h @@ -1,5 +1,5 @@ /* fatfs.h - Interface for fatfs. - Copyright (C) 1997, 1999, 2002 Free Software Foundation, Inc. + Copyright (C) 1997, 1999, 2002, 2003 Free Software Foundation, Inc. Written by Thomas Bushnell, n/BSG and Marcus Brinkmann. This file is part of the GNU Hurd. @@ -95,12 +95,16 @@ extern vm_address_t zerocluster; extern struct dirrect dr_root_node; +#define LOG2_BLOCKS_PER_CLUSTER + (log2_bytes_per_cluster - store->logs2_block_size) + #define round_cluster(offs) \ ((((offs) + bytes_per_cluster - 1) \ >> log2_bytes_per_cluster) << log2_bytes_per_cluster) -#define fat_first_cluster_byte(cluster) \ - (first_data_byte + ((cluster - 2) << log2_bytes_per_cluster)) +#define FAT_FIRST_CLUSTER_BLOCK(cluster) \ + (((cluster - 2) << LOG2_BLOCKS_PER_CLUSTER) + + (first_data_byte >> store->log2_block_size)) void drop_pager_softrefs (struct node *); void allow_pager_softrefs (struct node *); |