fs/msdosfs/msdosfs_denode.c

87  * pmp	     - address of msdosfsmount structure of the filesystem containing
98 deget(struct msdosfsmount *pmp, u_long dirclust, u_long diroffset,
103 	struct mount *mntp = pmp->pm_mountp;
110 	printf("deget(pmp %p, dirclust %lu, diroffset %lx, flags %#x, "
112 	    pmp, dirclust, diroffset, lkflags, depp);
120 	if (FAT32(pmp) && dirclust == MSDOSFSROOT)
121 		dirclust = pmp->pm_rootdirblk;
136 	inode = DETOI(pmp, dirclust, diroffset);
149 			    pmp->pm_mountp->mnt_stat.f_mntonname,
155 			    pmp->pm_mountp->mnt_stat.f_mntonname,
163 		msdosfs_integrity_error(pmp);
209 	ldep->de_pmp = pmp;
215 	    (FAT32(pmp) && dirclust == pmp->pm_rootdirblk)) &&
228 		if (FAT32(pmp))
229 			ldep->de_StartCluster = pmp->pm_rootdirblk;
233 			ldep->de_FileSize = pmp->pm_rootdirsize * DEV_BSIZE;
250 		error = readep(pmp, dirclust, diroffset, &bp, &direntptr);
297 				ldep->de_FileSize = de_cn2off(pmp, size);
372 	struct msdosfsmount *pmp = dep->de_pmp;
386 	if ((DETOV(dep)->v_vflag & VV_ROOT) && !FAT32(pmp)) {
411 		error = pcbmap(dep, de_clcount(pmp, length) - 1, 0,
421 	fc_purge(dep, de_clcount(pmp, length));
428 	if ((boff = length & pmp->pm_crbomask) != 0) {
430 			bn = cntobn(pmp, eofentry);
431 			error = bread(pmp->pm_devvp, bn, pmp->pm_bpcluster,
434 			error = bread(DETOV(dep), de_cluster(pmp, length),
435 			    pmp->pm_bpcluster, cred, &bp);
443 		memset(bp->b_data + boff, 0, pmp->pm_bpcluster - boff);
457 	allerror = vtruncbuf(DETOV(dep), length, pmp->pm_bpcluster);
475 		error = fatentry(FAT_GET_AND_SET, pmp, eofentry,
483 		fc_setcache(dep, FC_LASTFC, de_cluster(pmp, length - 1),
491 	if (chaintofree != 0 && !MSDOSFSEOF(pmp, chaintofree))
492 		freeclusterchain(pmp, chaintofree);
503 	struct msdosfsmount *pmp = dep->de_pmp;
513 	if ((vp->v_vflag & VV_ROOT) != 0 && !FAT32(pmp))
528 	count = de_clcount(pmp, length) - de_clcount(pmp, dep->de_FileSize);
530 		if (count > pmp->pm_freeclustercount)
550 	error = bread(vp, de_cluster(pmp, dep->de_FileSize), pmp->pm_bpcluster,
555 	eof_clusteroff = de_cn2off(pmp, de_cluster(pmp, dep->de_FileSize));
557 	    pmp->pm_bpcluster - dep->de_FileSize + eof_clusteroff);