/* * DEC STD 144 bad block replacement * given a cylinder, track, sector * return a replacement block * the return is an offset: * lbn = (size of disk) - (size of a track) - repno */ #include "sys/bad144.h" int bad144rep(bt, cyl, trk, sec) register struct bad144 *bt; { register int i; register long blk, bblk; blk = ((long)cyl << 16) + (trk << 8) + sec; for (i = 0; i < NBADDESC; i++) { bblk = ((long)bt->bt_bad[i].bt_cyl << 16) + bt->bt_bad[i].bt_trksec; if (blk == bblk) return (i); if (blk < bblk || bblk < 0) break; } return (-1); }