diff options
Diffstat (limited to 'util-linux/mkfs_ext2.c')
| -rw-r--r-- | util-linux/mkfs_ext2.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/util-linux/mkfs_ext2.c b/util-linux/mkfs_ext2.c index da27dc77d..5d5429f07 100644 --- a/util-linux/mkfs_ext2.c +++ b/util-linux/mkfs_ext2.c @@ -88,13 +88,14 @@ static uint32_t div_roundup(uint64_t size, uint32_t n) static void allocate(uint8_t *bitmap, uint32_t blocksize, uint32_t start, uint32_t end) { uint32_t i; + +//bb_info_msg("ALLOC: [%u][%u][%u]: [%u-%u]:=[%x],[%x]", blocksize, start, end, start/8, blocksize - end/8 - 1, (1 << (start & 7)) - 1, (uint8_t)(0xFF00 >> (end & 7))); memset(bitmap, 0, blocksize); i = start / 8; memset(bitmap, 0xFF, i); - bitmap[i] = 0xFF >> (8 - (start & 7)); -//bb_info_msg("ALLOC: [%u][%u][%u]: [%u-%u]:=[%x],[%x]", blocksize, start, end, start/8, blocksize - end/8 - 1, 0xFF >> (8 - (start & 7)), (uint8_t)(0xFF << (8-(end&7)))); + bitmap[i] = (1 << (start & 7)) - 1; //0..7 => 00000000..01111111 i = end / 8; - bitmap[blocksize - i - 1] = 0xFF << (8 - (end & 7)); + bitmap[blocksize - i - 1] |= 0x7F00 >> (end & 7); //0..7 => 00000000..11111110 memset(bitmap + blocksize - i, 0xFF, i); // N.B. no overflow here! } |