SR_FS_BLOCKSIZE
uint16_t bsize = SR_FS_BLOCKSIZE;
nblocks = howmany(SR_BOOT_LOADER_SIZE, SR_FS_BLOCKSIZE / DEV_BSIZE);
bootsize = nblocks * SR_FS_BLOCKSIZE;
nblocks = howmany(sb.st_blocks, SR_FS_BLOCKSIZE / DEV_BSIZE);
&p[bootsize - SR_FS_BLOCKSIZE]) + INODEOFF;