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fixing off-by-one bug in two static assertions

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Henry Gabryjelski 2022-01-25 01:57:36 -08:00
parent cee41d975d
commit fb08374599
1 changed files with 2 additions and 2 deletions
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4
src/ghostfat.c
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@ -181,8 +181,8 @@ enum {
NUM_DIRENTRIES = NUM_FILES + 1 // including volume label as first root directory entry
};
STATIC_ASSERT(NUM_DIRENTRIES <= BPB_ROOT_DIR_ENTRIES); // FAT requirement -- Ensures BPB reserves sufficient entries for all files
STATIC_ASSERT(NUM_DIRENTRIES <= DIRENTRIES_PER_SECTOR); // GhostFAT bug workaround -- else, code overflows buffer
STATIC_ASSERT(NUM_DIRENTRIES < BPB_ROOT_DIR_ENTRIES); // FAT requirement -- Ensures BPB reserves sufficient entries for all files
STATIC_ASSERT(NUM_DIRENTRIES < DIRENTRIES_PER_SECTOR); // GhostFAT bug workaround -- else, code overflows buffer
#define NUM_SECTORS_IN_DATA_REGION (BPB_TOTAL_SECTORS - BPB_RESERVED_SECTORS - (BPB_NUMBER_OF_FATS * BPB_SECTORS_PER_FAT) - ROOT_DIR_SECTOR_COUNT)
#define CLUSTER_COUNT (NUM_SECTORS_IN_DATA_REGION / BPB_SECTORS_PER_CLUSTER)