sbin/fsck_ffs/fsutil.c

225 	struct cg *cgp;
235 	cgp = NULL;
237 		cgp = malloc((unsigned int)sblock.fs_cgsize);
238 	if (cgp == NULL) {
242 	cgbp->b_un.b_cg = cgp;
691 	struct cg *cgp = cgbp->b_un.b_cg;
696 	if (cg_chkmagic(cgp) &&
698 	      cgp->cg_old_niblk == sblock.fs_ipg &&
699 	      cgp->cg_ndblk <= sblock.fs_fpg &&
700 	      cgp->cg_old_ncyl <= sblock.fs_old_cpg) ||
702 	      cgp->cg_niblk == sblock.fs_ipg &&
703 	      cgp->cg_ndblk <= sblock.fs_fpg &&
704 	      cgp->cg_initediblk <= sblock.fs_ipg))) {
717 	memset(cgp, 0, (size_t)sblock.fs_cgsize);
718 	cgp->cg_magic = CG_MAGIC;
719 	cgp->cg_cgx = cg;
720 	cgp->cg_niblk = sblock.fs_ipg;
721 	cgp->cg_initediblk = sblock.fs_ipg < 2 * INOPB(&sblock) ?
724 		cgp->cg_ndblk = sblock.fs_fpg;
726 		cgp->cg_ndblk = sblock.fs_size - cgbase(&sblock, cg);
727 	cgp->cg_iusedoff = &cgp->cg_space[0] - (u_char *)(&cgp->cg_firstfield);
729 		cgp->cg_niblk = 0;
730 		cgp->cg_initediblk = 0;
731 		cgp->cg_old_ncyl = sblock.fs_old_cpg;
732 		cgp->cg_old_niblk = sblock.fs_ipg;
733 		cgp->cg_old_btotoff = cgp->cg_iusedoff;
734 		cgp->cg_old_boff = cgp->cg_old_btotoff +
736 		cgp->cg_iusedoff = cgp->cg_old_boff +
739 	cgp->cg_freeoff = cgp->cg_iusedoff + howmany(sblock.fs_ipg, CHAR_BIT);
740 	cgp->cg_nextfreeoff = cgp->cg_freeoff + howmany(sblock.fs_fpg,CHAR_BIT);
742 		cgp->cg_nclusterblks = cgp->cg_ndblk / sblock.fs_frag;
743 		cgp->cg_clustersumoff =
744 		    roundup(cgp->cg_nextfreeoff, sizeof(u_int32_t));
745 		cgp->cg_clustersumoff -= sizeof(u_int32_t);
746 		cgp->cg_clusteroff = cgp->cg_clustersumoff +
748 		cgp->cg_nextfreeoff = cgp->cg_clusteroff +
763 	struct cg *cgp;
780 			cgp = cgbp->b_un.b_cg;
786 				clrbit(cg_blksfree(cgp), baseblk + k);
790 				cgp->cg_cs.cs_nbfree--;
792 				cgp->cg_cs.cs_nffree -= frags;