dskread
if (dskread(ufs_buffer, 0, BSD_LABEL_BUFFER / DEV_BSIZE) != 0)
static int dskread(void *, unsigned, unsigned);
static int dskread(void *, daddr_t, unsigned);
if (dskread(dmadat->sbbuf, sblock_try[n] / DEV_BSIZE,
if (dskread(blkbuf, INO_TO_VBA(&fs, n, inode), DBPERVBLK))
if (dskread(indbuf, vbaddr, DBPERVBLK))
if (dskread(blkbuf, vbaddr, n >> DEV_BSHIFT))
static int dskread(void *, uint64_t, int);