blknum
dos_read_fatblk(DOS_FS *fs, uint_t blknum)
offset_in_fat = ((daddr_t)blknum) * io_size;
fs->fatbuf_blknum = blknum;
uint_t val_in, val_out, offset, blknum, nbyte;
blknum = offset / FATBLKSZ;
if (blknum != fs->fatbuf_blknum) {
err = dos_read_fatblk(fs, blknum);
j = blknum(fs, (uint64_t)fs->fs_size + fs->fs_frag - 1);
bpref = blknum(fs, bpref);
__in uint32_t blknum);
__in uint32_t blknum)
(blknum >= (8 * sizeof (*map)))) {
if ((*map & (1u << blknum)) == 0) {
*map &= ~(1u << blknum);