fs/msdosfs/msdosfs_lookup.c

66 msdosfs_lookup_checker(struct msdosfsmount *pmp, struct vnode *dvp,
79 		msdosfs_integrity_error(pmp);
107 	struct msdosfsmount *pmp;
110 	pmp = VFSTOMSDOSFS(mp);
112 	error = deget(pmp, dd_arg->cluster, dd_arg->blkoff,
153 	struct msdosfsmount *pmp;
171 	pmp = dp->de_pmp;
199 	    cnp->cn_namelen, 0, pmp)) {
206 		    cnp->cn_namelen, pmp) + 1;
211 		    cnp->cn_namelen, pmp) + 1;
214 	if (pmp->pm_flags & MSDOSFSMNT_SHORTNAME) {
256 		error = bread(pmp->pm_devvp, bn, blsize, NOCRED, &bp);
301 					if (pmp->pm_flags & MSDOSFSMNT_SHORTNAME)
306 					    pmp);
312 				    chksum, pmp);
450 	if (FAT32(pmp)) {
452 		if (scn == pmp->pm_rootdirblk) {
484 	if (FAT32(pmp) && scn == MSDOSFSROOT)
485 		scn = pmp->pm_rootdirblk;
520 		error = deget(pmp, cluster, blkoff, LK_EXCLUSIVE, &tdp);
523 		return (msdosfs_lookup_checker(pmp, vdp, tdp, vpp));
547 		if ((error = deget(pmp, cluster, blkoff, LK_EXCLUSIVE,
550 		if ((error = msdosfs_lookup_checker(pmp, vdp, tdp, vpp))
587 		if (FAT32(pmp) && scn == MSDOSFSROOT)
588 			scn = pmp->pm_rootdirblk;
589 		inode1 = DETOI(pmp, scn, blkoff);
594 		error = msdosfs_lookup_checker(pmp, vdp, VTODE(*vpp), vpp);
600 			msdosfs_integrity_error(pmp);
606 		if ((error = deget(pmp, cluster, blkoff, LK_EXCLUSIVE,
609 		if ((error = msdosfs_lookup_checker(pmp, vdp, tdp, vpp)) != 0)
635 	struct msdosfsmount *pmp = ddep->de_pmp;
656 		dirclust = de_clcount(pmp, diroffset);
666 		ddep->de_FileSize += de_cn2off(pmp, dirclust);
674 	error = pcbmap(ddep, de_cluster(pmp, ddep->de_fndoffset),
680 		diroffset &= pmp->pm_crbomask;
681 	if ((error = bread(pmp->pm_devvp, bn, blsize, NOCRED, &bp)) != 0) {
685 	ndep = bptoep(pmp, bp, ddep->de_fndoffset);
700 			if (!(ddep->de_fndoffset & pmp->pm_crbomask)) {
708 					       de_cluster(pmp,
714 				error = bread(pmp->pm_devvp, bn, blsize,
719 				ndep = bptoep(pmp, bp, ddep->de_fndoffset);
726 					cnt++, chksum, pmp))
742 			if (FAT32(pmp) && dirclust == pmp->pm_rootdirblk)
749 		return (deget(pmp, dirclust, diroffset, LK_EXCLUSIVE, depp));
767 	struct msdosfsmount *pmp = dep->de_pmp;
781 		error = bread(pmp->pm_devvp, bn, blsize, NOCRED, &bp);
837 	struct msdosfsmount *pmp;
845 	pmp = target->de_pmp;
846 	lockmgr_assert(&pmp->pm_checkpath_lock, KA_XLOCKED);
847 	KASSERT(pmp == source->de_pmp,
858 	    (FAT32(pmp) && target->de_StartCluster == pmp->pm_rootdirblk))
869 		error = bread(pmp->pm_devvp, cntobn(pmp, scn),
870 		    pmp->pm_bpcluster, NOCRED, &bp);
883 		if (FAT32(pmp))
893 		if (FAT32(pmp) && scn == pmp->pm_rootdirblk) {
904 		error = deget(pmp, scn, 0, LK_EXCLUSIVE | LK_NOWAIT, &dep);
925 readep(struct msdosfsmount *pmp, u_long dirclust, u_long diroffset,
932 	blsize = pmp->pm_bpcluster;
934 	    && de_blk(pmp, diroffset + blsize) > pmp->pm_rootdirsize)
935 		blsize = de_bn2off(pmp, pmp->pm_rootdirsize) & pmp->pm_crbomask;
936 	bn = detobn(pmp, dirclust, diroffset);
937 	if ((error = bread(pmp->pm_devvp, bn, blsize, NOCRED, bpp)) != 0) {
943 		*epp = bptoep(pmp, *bpp, diroffset);
979 	struct msdosfsmount *pmp = pdep->de_pmp;
991 		error = pcbmap(pdep, de_cluster(pmp, offset), &bn, 0, &blsize);
994 		error = bread(pmp->pm_devvp, bn, blsize, NOCRED, &bp);
998 		ep = bptoep(pmp, bp, offset);
1020 			if ((pmp->pm_flags & MSDOSFSMNT_NOWIN95)
1021 			    || !(offset & pmp->pm_crbomask)
1029 	} while (!(pmp->pm_flags & MSDOSFSMNT_NOWIN95)
1030 	    && !(offset & pmp->pm_crbomask)
1041 	struct msdosfsmount *pmp = dep->de_pmp;
1050 	if (pmp->pm_flags & MSDOSFSMNT_SHORTNAME)
1052 		    cnp->cn_namelen, 0, pmp) ? 0 : EINVAL);
1059 		    cnp->cn_namelen, gen, pmp))
1071 			error = bread(pmp->pm_devvp, bn, blsize, NOCRED, &bp);