fs/msdosfs/msdosfs_vnops.c

223 	struct msdosfsmount *pmp = dep->de_pmp;
228 	file_mode &= (vp->v_type == VDIR ? pmp->pm_dirmask : pmp->pm_mask);
246 	return (vaccess(vp->v_type, file_mode, pmp->pm_uid, pmp->pm_gid,
254 	struct msdosfsmount *pmp = dep->de_pmp;
258 	u_long dirsperblk = pmp->pm_BytesPerSec / sizeof(struct direntry);
263 	vap->va_fsid = dev2udev(pmp->pm_dev);
270 		fileid = (uint64_t)cntobn(pmp, dep->de_StartCluster) *
275 		fileid = (uint64_t)cntobn(pmp, dep->de_dirclust) *
278 			fileid = (uint64_t)roottobn(pmp, 0) * dirsperblk;
287 	    (ap->a_vp->v_type == VDIR ? pmp->pm_dirmask : pmp->pm_mask);
288 	vap->va_uid = pmp->pm_uid;
289 	vap->va_gid = pmp->pm_gid;
295 	if (pmp->pm_flags & MSDOSFSMNT_LONGNAME) {
314 	vap->va_blocksize = pmp->pm_bpcluster;
317 		    (dep->de_FileSize + pmp->pm_crbomask) & ~pmp->pm_crbomask;
330 	struct msdosfsmount *pmp = dep->de_pmp;
377 		if (cred->cr_uid != pmp->pm_uid) {
421 			uid = pmp->pm_uid;
424 			gid = pmp->pm_gid;
425 		if (cred->cr_uid != pmp->pm_uid || uid != pmp->pm_uid ||
426 		    (gid != pmp->pm_gid && !groupmember(gid, cred))) {
431 		if (uid != pmp->pm_uid || gid != pmp->pm_gid)
473 		if ((pmp->pm_flags & MSDOSFSMNT_NOWIN95) == 0 &&
500 		if (cred->cr_uid != pmp->pm_uid) {
535 	struct msdosfsmount *pmp = dep->de_pmp;
559 		lbn = de_cluster(pmp, uio->uio_offset);
561 		blsize = pmp->pm_bpcluster;
562 		on = uio->uio_offset & pmp->pm_crbomask;
576 			error = bread(pmp->pm_devvp, lbn, blsize, NOCRED, &bp);
577 		} else if (de_cn2off(pmp, rablock) >= dep->de_FileSize) {
593 		diff = pmp->pm_bpcluster - on;
630 	struct msdosfsmount *pmp = dep->de_pmp;
698 		count = de_clcount(pmp, uio->uio_offset + resid) -
699 			de_clcount(pmp, osize);
705 		lastcn = de_clcount(pmp, osize) - 1;
709 		if (de_cluster(pmp, uio->uio_offset) > lastcn) {
714 		croffset = uio->uio_offset & pmp->pm_crbomask;
715 		n = min(uio->uio_resid, pmp->pm_bpcluster - croffset);
722 		bn = de_cluster(pmp, uio->uio_offset);
723 		if ((uio->uio_offset & pmp->pm_crbomask) == 0
724 		    && (de_cluster(pmp, uio->uio_offset + uio->uio_resid)
725 			> de_cluster(pmp, uio->uio_offset)
732 			bp = getblk(thisvp, bn, pmp->pm_bpcluster, 0, 0, 0);
761 			error = bread(thisvp, bn, pmp->pm_bpcluster, cred, &bp);
799 		else if (n + croffset == pmp->pm_bpcluster) {
952 	struct msdosfsmount *pmp;
962 	pmp = VFSTOMSDOSFS(fdvp->v_mount);
1012 	error = deget(pmp, scn, blkoff, LK_EXCLUSIVE | LK_NOWAIT, &nip);
1018 		error = deget(pmp, scn, blkoff, LK_EXCLUSIVE, &nip);
1043 		error = deget(pmp, scn, blkoff, LK_EXCLUSIVE | LK_NOWAIT,
1055 			error = deget(pmp, scn, blkoff, LK_EXCLUSIVE,
1111 		lockmgr(&pmp->pm_checkpath_lock, LK_EXCLUSIVE, NULL);
1115 			lockmgr(&pmp->pm_checkpath_lock, LK_RELEASE, NULL);
1122 			error = deget(pmp, wait_scn, 0, LK_EXCLUSIVE,
1209 		    pmp->pm_mountp->mnt_stat.f_mntonname,
1211 		msdosfs_integrity_error(pmp);
1215 		error = pcbmap(tdip, de_cluster(pmp, to_diroffset), 0,
1227 			fip->de_diroffset = to_diroffset & pmp->pm_crbomask;
1241 			bn = cntobn(pmp, cn);
1242 		error = bread(pmp->pm_devvp, bn, pmp->pm_bpcluster,
1246 			    pmp->pm_mountp->mnt_stat.f_mntonname,
1248 			msdosfs_integrity_error(pmp);
1253 		if (FAT32(pmp) && pcl == pmp->pm_rootdirblk)
1256 		if (FAT32(pmp))
1262 			    pmp->pm_mountp->mnt_stat.f_mntonname,
1264 			msdosfs_integrity_error(pmp);
1280 		lockmgr(&pmp->pm_checkpath_lock, LK_RELEASE, NULL);
1344 	struct msdosfsmount *pmp = pdep->de_pmp;
1366 	error = clusteralloc(pmp, 0, 1, CLUST_EOFE, &newcluster, NULL);
1371 	ndirent.de_pmp = pmp;
1381 	bn = cntobn(pmp, newcluster);
1383 	bp = getblk(pmp->pm_devvp, bn, pmp->pm_bpcluster, 0, 0, 0);
1384 	memset(bp->b_data, 0, pmp->pm_bpcluster);
1400 	if (FAT32(pmp) && pcl == pmp->pm_rootdirblk)
1409 	if (FAT32(pmp)) {
1439 	clusterfree(pmp, newcluster);
1519 	struct msdosfsmount *pmp = dep->de_pmp;
1565 	dirsperblk = pmp->pm_BytesPerSec / sizeof(struct direntry);
1575 	    || (FAT32(pmp) && dep->de_StartCluster == pmp->pm_rootdirblk)) {
1584 				dirbuf.d_fileno = FAT32(pmp) ?
1585 				    (uint64_t)cntobn(pmp, pmp->pm_rootdirblk) *
1622 		lbn = de_cluster(pmp, offset - bias);
1623 		on = (offset - bias) & pmp->pm_crbomask;
1624 		n = min(pmp->pm_bpcluster - on, uio->uio_resid);
1632 		error = bread(pmp->pm_devvp, bn, blsize, NOCRED, &bp);
1673 				if (pmp->pm_flags & MSDOSFSMNT_SHORTNAME)
1676 				    (struct winentry *)dentp, chksum, pmp);
1695 				if (FAT32(pmp)) {
1699 						cn = pmp->pm_rootdirblk;
1701 				if (cn == MSDOSFSROOT && !FAT32(pmp))
1704 					dirbuf.d_fileno = cntobn(pmp, cn) *
1717 					((pmp->pm_flags & MSDOSFSMNT_SHORTNAME) ?
1719 				    pmp);
1784 	struct msdosfsmount *pmp;
1792 	pmp = dep->de_pmp;
1794 		*ap->a_bop = &pmp->pm_devvp->v_bufobj;
1824 	bnpercn = de_cn2bn(pmp, 1);
1826 		maxrun = ulmin(maxio - 1, pmp->pm_maxcluster - cn);
1936 	struct msdosfsmount *pmp = VTODE(ap->a_vp)->de_pmp;
1946 		*ap->a_retval = pmp->pm_flags & MSDOSFSMNT_LONGNAME ? WIN_MAXLEN : 12;