1 /*-
2  * SPDX-License-Identifier: BSD-3-Clause
105 	if ((ip->i_flag & IN_MODIFIED) == 0 && waitfor == 0)  in ffs_update()
107 	ip->i_flag &= ~(IN_LAZYACCESS | IN_LAZYMOD | IN_MODIFIED);  in ffs_update()
123 	 * or fsyncdata() will be able to run before the on-disk inode  in ffs_update()
127 		ip->i_flag &= ~(IN_SIZEMOD | IN_IBLKDATA);  in ffs_update()
129 	if (fs->fs_ronly)  in ffs_update()
146 	bn = fsbtodb(fs, ino_to_fsba(fs, ip->i_number));  in ffs_update()
147 	error = ffs_breadz(VFSTOUFS(vp->v_mount), ITODEVVP(ip), bn, bn,  in ffs_update()
148 	     (int) fs->fs_bsize, NULL, NULL, 0, NOCRED, flags, NULL, &bp);  in ffs_update()
187 	else if (ip->i_effnlink != ip->i_nlink)  in ffs_update()
190 		*((struct ufs1_dinode *)bp->b_data +  in ffs_update()
191 		    ino_to_fsbo(fs, ip->i_number)) = *ip->i_din1;  in ffs_update()
196 		random_harvest_queue(&(ip->i_din1), sizeof(ip->i_din1), RANDOM_FS_ATIME);  in ffs_update()
198 		ffs_update_dinode_ckhash(fs, ip->i_din2);  in ffs_update()
199 		*((struct ufs2_dinode *)bp->b_data +  in ffs_update()
200 		    ino_to_fsbo(fs, ip->i_number)) = *ip->i_din2;  in ffs_update()
205 		random_harvest_queue(&(ip->i_din2), sizeof(ip->i_din2), RANDOM_FS_ATIME);  in ffs_update()
209 		if (ffs_fsfail_cleanup(VFSTOUFS(vp->v_mount), error))  in ffs_update()
215 		if (bp->b_bufsize == fs->fs_bsize)  in ffs_update()
216 			bp->b_flags |= B_CLUSTEROK;  in ffs_update()
249 	int offset, size, level, nblocks;  in ffs_truncate()  local
255 	ump = VFSTOUFS(vp->v_mount);  in ffs_truncate()
256 	fs = ump->um_fs;  in ffs_truncate()
257 	bo = &vp->v_bufobj;  in ffs_truncate()
263 	if (length > fs->fs_maxfilesize)  in ffs_truncate()
281 	 * If we are truncating the extended-attributes, and cannot  in ffs_truncate()
295 	if (fs->fs_magic == FS_UFS2_MAGIC && ip->i_din2->di_extsize > 0) {  in ffs_truncate()
296 		extblocks = btodb(fragroundup(fs, ip->i_din2->di_extsize));  in ffs_truncate()
309 			(void) chkdq(ip, -extblocks, NOCRED, FORCE);  in ffs_truncate()
313 			    OFF_TO_IDX(lblktosize(fs, -extblocks)), 0);  in ffs_truncate()
314 			osize = ip->i_din2->di_extsize;  in ffs_truncate()
315 			ip->i_din2->di_blocks -= extblocks;  in ffs_truncate()
316 			ip->i_din2->di_extsize = 0;  in ffs_truncate()
318 				oldblks[i] = ip->i_din2->di_extb[i];  in ffs_truncate()
319 				ip->i_din2->di_extb[i] = 0;  in ffs_truncate()
328 				    sblksize(fs, osize, i), ip->i_number,  in ffs_truncate()
329 				    vp->v_type, NULL, SINGLETON_KEY);  in ffs_truncate()
335 	if (vp->v_type == VLNK && ip->i_size < ump->um_maxsymlinklen) {  in ffs_truncate()
340 		bzero(DIP(ip, i_shortlink), (uint64_t)ip->i_size);  in ffs_truncate()
341 		ip->i_size = 0;  in ffs_truncate()
348 	if (ip->i_size == length) {  in ffs_truncate()
354 	if (fs->fs_ronly)  in ffs_truncate()
355 		panic("ffs_truncate: read-only filesystem");  in ffs_truncate()
358 	cluster_init_vn(&ip->i_clusterw);  in ffs_truncate()
359 	osize = ip->i_size;  in ffs_truncate()
362 	 * last byte of the file is allocated. Since the smallest  in ffs_truncate()
368 		error = UFS_BALLOC(vp, length - 1, 1, cred, flags, &bp);  in ffs_truncate()
373 		ip->i_size = length;  in ffs_truncate()
375 		if (bp->b_bufsize == fs->fs_bsize)  in ffs_truncate()
376 			bp->b_flags |= B_CLUSTEROK;  in ffs_truncate()
383 	 * have no blocks, so return a blkno of -1.  in ffs_truncate()
385 	lbn = lblkno(fs, length - 1);  in ffs_truncate()
387 		blkno = -1;  in ffs_truncate()
391 		error = UFS_BALLOC(vp, lblktosize(fs, (off_t)lbn), fs->fs_bsize,  in ffs_truncate()
395 		indiroff = (lbn - UFS_NDADDR) % NINDIR(fs);  in ffs_truncate()
397 			blkno = ((ufs1_daddr_t *)(bp->b_data))[indiroff];  in ffs_truncate()
399 			blkno = ((ufs2_daddr_t *)(bp->b_data))[indiroff];  in ffs_truncate()
401 		 * If the block number is non-zero, then the indirect block  in ffs_truncate()
415 	 * then we must allocate it to ensure that the last block of   in ffs_truncate()
451 	 * Shorten the size of the file. If the last block of the  in ffs_truncate()
462 		ip->i_size = length;  in ffs_truncate()
466 		if (vp->v_type == VDIR && ip->i_dirhash != NULL)  in ffs_truncate()
472 		error = UFS_BALLOC(vp, length - 1, 1, cred, flags, &bp);  in ffs_truncate()
486 		    fragroundup(fs, blkoff(fs, length)) < fs->fs_bsize &&  in ffs_truncate()
490 		error = UFS_BALLOC(vp, length - 1, 1, cred, flags, &bp);  in ffs_truncate()
493 		ip->i_size = length;  in ffs_truncate()
496 		if (vp->v_type == VDIR && ip->i_dirhash != NULL)  in ffs_truncate()
500 		if (vp->v_type != VDIR && offset != 0)  in ffs_truncate()
501 			bzero((char *)bp->b_data + offset,  in ffs_truncate()
502 			    (uint64_t)(size - offset));  in ffs_truncate()
505 		if (bp->b_bufsize == fs->fs_bsize)  in ffs_truncate()
506 			bp->b_flags |= B_CLUSTEROK;  in ffs_truncate()
512 	 * last direct and indirect blocks (if any)  in ffs_truncate()
513 	 * which we want to keep.  Lastblock is -1 when  in ffs_truncate()
516 	lastblock = lblkno(fs, length + fs->fs_bsize - 1) - 1;  in ffs_truncate()
517 	lastiblock[SINGLE] = lastblock - UFS_NDADDR;  in ffs_truncate()
518 	lastiblock[DOUBLE] = lastiblock[SINGLE] - NINDIR(fs);  in ffs_truncate()
519 	lastiblock[TRIPLE] = lastiblock[DOUBLE] - NINDIR(fs) * NINDIR(fs);  in ffs_truncate()
520 	nblocks = btodb(fs->fs_bsize);  in ffs_truncate()
525 	 * normalized to -1 for calls to ffs_indirtrunc below.  in ffs_truncate()
527 	for (level = TRIPLE; level >= SINGLE; level--) {  in ffs_truncate()
528 		oldblks[UFS_NDADDR + level] = DIP(ip, i_ib[level]);  in ffs_truncate()
529 		if (lastiblock[level] < 0) {  in ffs_truncate()
530 			DIP_SET(ip, i_ib[level], 0);  in ffs_truncate()
531 			lastiblock[level] = -1;  in ffs_truncate()
560 	ip->i_size = osize;  in ffs_truncate()
564 	error = vtruncbuf(vp, length, fs->fs_bsize);  in ffs_truncate()
571 	indir_lbn[SINGLE] = -UFS_NDADDR;  in ffs_truncate()
572 	indir_lbn[DOUBLE] = indir_lbn[SINGLE] - NINDIR(fs) - 1;  in ffs_truncate()
573 	indir_lbn[TRIPLE] = indir_lbn[DOUBLE] - NINDIR(fs) * NINDIR(fs) - 1;  in ffs_truncate()
574 	for (level = TRIPLE; level >= SINGLE; level--) {  in ffs_truncate()
575 		bn = DIP(ip, i_ib[level]);  in ffs_truncate()
577 			error = ffs_indirtrunc(ip, indir_lbn[level],  in ffs_truncate()
578 			    fsbtodb(fs, bn), lastiblock[level], level, &count);  in ffs_truncate()
582 			if (lastiblock[level] < 0) {  in ffs_truncate()
583 				DIP_SET(ip, i_ib[level], 0);  in ffs_truncate()
584 				ffs_blkfree(ump, fs, ump->um_devvp, bn,  in ffs_truncate()
585 				    fs->fs_bsize, ip->i_number,  in ffs_truncate()
586 				    vp->v_type, NULL, SINGLETON_KEY);  in ffs_truncate()
590 		if (lastiblock[level] >= 0)  in ffs_truncate()
597 	key = ffs_blkrelease_start(ump, ump->um_devvp, ip->i_number);  in ffs_truncate()
598 	for (i = UFS_NDADDR - 1; i > lastblock; i--) {  in ffs_truncate()
606 		ffs_blkfree(ump, fs, ump->um_devvp, bn, bsize, ip->i_number,  in ffs_truncate()
607 		    vp->v_type, NULL, key);  in ffs_truncate()
616 	 * last direct block; release any frags.  in ffs_truncate()
627 		ip->i_size = length;  in ffs_truncate()
633 		if (oldspace - newspace > 0) {  in ffs_truncate()
640 			ffs_blkfree(ump, fs, ump->um_devvp, bn,  in ffs_truncate()
641 			   oldspace - newspace, ip->i_number, vp->v_type,  in ffs_truncate()
643 			blocksreleased += btodb(oldspace - newspace);  in ffs_truncate()
648 	for (level = SINGLE; level <= TRIPLE; level++)  in ffs_truncate()
649 		if (newblks[UFS_NDADDR + level] != DIP(ip, i_ib[level]))  in ffs_truncate()
650 			panic("ffs_truncate1: level %d newblks %jd != i_ib %jd",  in ffs_truncate()
651 			    level, (intmax_t)newblks[UFS_NDADDR + level],  in ffs_truncate()
652 			    (intmax_t)DIP(ip, i_ib[level]));  in ffs_truncate()
656 			    i, (intmax_t)newblks[UFS_NDADDR + level],  in ffs_truncate()
657 			    (intmax_t)DIP(ip, i_ib[level]));  in ffs_truncate()
660 	    (fs->fs_magic != FS_UFS2_MAGIC || ip->i_din2->di_extsize == 0) &&  in ffs_truncate()
661 	    (bo->bo_dirty.bv_cnt > 0 || bo->bo_clean.bv_cnt > 0))  in ffs_truncate()
663 			vp, bo->bo_dirty.bv_cnt, bo->bo_clean.bv_cnt);  in ffs_truncate()
669 	ip->i_size = length;  in ffs_truncate()
672 		DIP_SET(ip, i_blocks, DIP(ip, i_blocks) - blocksreleased);  in ffs_truncate()
677 	(void) chkdq(ip, -blocksreleased, NOCRED, FORCE);  in ffs_truncate()
692  * lastbn.  If level is greater than SINGLE, the block is an indirect block
701 	int level,  in ffs_indirtrunc()  argument
711 	ufs2_daddr_t nb, nlbn, last;  in ffs_indirtrunc()  local
721 	 * Calculate index in current block of last  in ffs_indirtrunc()
722 	 * block to be kept.  -1 indicates the entire  in ffs_indirtrunc()
725 	factor = lbn_offset(fs, level);  in ffs_indirtrunc()
726 	last = lastbn;  in ffs_indirtrunc()
728 		last /= factor;  in ffs_indirtrunc()
729 	nblocks = btodb(fs->fs_bsize);  in ffs_indirtrunc()
735 	 * have the on-disk address, so we just pass it to bread() instead  in ffs_indirtrunc()
739 	error = ffs_breadz(ump, vp, lbn, dbn, (int)fs->fs_bsize, NULL, NULL, 0,  in ffs_indirtrunc()
747 		bap1 = (ufs1_daddr_t *)bp->b_data;  in ffs_indirtrunc()
749 		bap2 = (ufs2_daddr_t *)bp->b_data;  in ffs_indirtrunc()
750 	if (lastbn != -1) {  in ffs_indirtrunc()
751 		copy = malloc(fs->fs_bsize, M_TEMP, M_WAITOK);  in ffs_indirtrunc()
752 		bcopy((caddr_t)bp->b_data, copy, (uint64_t)fs->fs_bsize);  in ffs_indirtrunc()
753 		for (i = last + 1; i < NINDIR(fs); i++)  in ffs_indirtrunc()
774 	key = ffs_blkrelease_start(ump, ITODEVVP(ip), ip->i_number);  in ffs_indirtrunc()
775 	for (i = NINDIR(fs) - 1, nlbn = lbn + 1 - i * factor; i > last;  in ffs_indirtrunc()
776 	    i--, nlbn += factor) {  in ffs_indirtrunc()
780 		if (level > SINGLE) {  in ffs_indirtrunc()
782 			    (ufs2_daddr_t)-1, level - 1, &blkcount)) != 0)  in ffs_indirtrunc()
786 		ffs_blkfree(ump, fs, ITODEVVP(ip), nb, fs->fs_bsize,  in ffs_indirtrunc()
787 		    ip->i_number, vp->v_type, NULL, key);  in ffs_indirtrunc()
793 	 * Recursively free last partial block.  in ffs_indirtrunc()
795 	if (level > SINGLE && lastbn >= 0) {  in ffs_indirtrunc()
796 		last = lastbn % factor;  in ffs_indirtrunc()
800 			    last, level - 1, &blkcount);  in ffs_indirtrunc()
809 		bp->b_flags |= B_INVAL | B_NOCACHE;  in ffs_indirtrunc()
821 	return (ITOFS(ip)->fs_ronly != 0);  in ffs_rdonly()