1c85e6a35d
filesystem expands the inode to 256 bytes to make space for 64-bit block pointers. It also adds a file-creation time field, an ability to use jumbo blocks per inode to allow extent like pointer density, and space for extended attributes (up to twice the filesystem block size worth of attributes, e.g., on a 16K filesystem, there is space for 32K of attributes). UFS2 fully supports and runs existing UFS1 filesystems. New filesystems built using newfs can be built in either UFS1 or UFS2 format using the -O option. In this commit UFS1 is the default format, so if you want to build UFS2 format filesystems, you must specify -O 2. This default will be changed to UFS2 when UFS2 proves itself to be stable. In this commit the boot code for reading UFS2 filesystems is not compiled (see /sys/boot/common/ufsread.c) as there is insufficient space in the boot block. Once the size of the boot block is increased, this code can be defined. Things to note: the definition of SBSIZE has changed to SBLOCKSIZE. The header file <ufs/ufs/dinode.h> must be included before <ufs/ffs/fs.h> so as to get the definitions of ufs2_daddr_t and ufs_lbn_t. Still TODO: Verify that the first level bootstraps work for all the architectures. Convert the utility ffsinfo to understand UFS2 and test growfs. Add support for the extended attribute storage. Update soft updates to ensure integrity of extended attribute storage. Switch the current extended attribute interfaces to use the extended attribute storage. Add the extent like functionality (framework is there, but is currently never used). Sponsored by: DARPA & NAI Labs. Reviewed by: Poul-Henning Kamp <phk@freebsd.org>
749 lines
20 KiB
C
749 lines
20 KiB
C
/*
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* Copyright (c) 2002 Networks Associates Technology, Inc.
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* All rights reserved.
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*
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* This software was developed for the FreeBSD Project by Marshall
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* Kirk McKusick and Network Associates Laboratories, the Security
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* Research Division of Network Associates, Inc. under DARPA/SPAWAR
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* contract N66001-01-C-8035 ("CBOSS"), as part of the DARPA CHATS
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* research program
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*
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* Copyright (c) 1982, 1989, 1993
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* The Regents of the University of California. All rights reserved.
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* (c) UNIX System Laboratories, Inc.
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* Copyright (c) 1982, 1986, 1989, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)ffs_balloc.c 8.8 (Berkeley) 6/16/95
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* $FreeBSD$
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/bio.h>
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#include <sys/buf.h>
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#include <sys/lock.h>
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#include <sys/mount.h>
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#include <sys/vnode.h>
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|
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#include <ufs/ufs/quota.h>
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#include <ufs/ufs/inode.h>
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#include <ufs/ufs/ufs_extern.h>
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#include <ufs/ffs/fs.h>
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#include <ufs/ffs/ffs_extern.h>
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|
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|
/*
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* Balloc defines the structure of filesystem storage
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* by allocating the physical blocks on a device given
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* the inode and the logical block number in a file.
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* This is the allocation strategy for UFS1. Below is
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* the allocation strategy for UFS2.
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*/
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int
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ffs_balloc_ufs1(struct vnode *vp, off_t startoffset, int size,
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struct ucred *cred, int flags, struct buf **bpp)
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{
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struct inode *ip;
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ufs_lbn_t lbn, lastlbn;
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struct fs *fs;
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ufs1_daddr_t nb;
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struct buf *bp, *nbp;
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struct indir indirs[NIADDR + 2];
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int deallocated, osize, nsize, num, i, error;
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ufs2_daddr_t newb;
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|
ufs1_daddr_t *bap, pref;
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ufs1_daddr_t *allocib, *blkp, *allocblk, allociblk[NIADDR + 1];
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int unwindidx = -1;
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struct thread *td = curthread; /* XXX */
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|
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ip = VTOI(vp);
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fs = ip->i_fs;
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lbn = lblkno(fs, startoffset);
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size = blkoff(fs, startoffset) + size;
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if (size > fs->fs_bsize)
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panic("ffs_balloc_ufs1: blk too big");
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*bpp = NULL;
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if (lbn < 0)
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return (EFBIG);
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|
|
|
/*
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* If the next write will extend the file into a new block,
|
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* and the file is currently composed of a fragment
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* this fragment has to be extended to be a full block.
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*/
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lastlbn = lblkno(fs, ip->i_size);
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|
if (lastlbn < NDADDR && lastlbn < lbn) {
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nb = lastlbn;
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osize = blksize(fs, ip, nb);
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|
if (osize < fs->fs_bsize && osize > 0) {
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error = ffs_realloccg(ip, nb,
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ffs_blkpref_ufs1(ip, lastlbn, (int)nb,
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&ip->i_din1->di_db[0]),
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osize, (int)fs->fs_bsize, cred, &bp);
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if (error)
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return (error);
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if (DOINGSOFTDEP(vp))
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softdep_setup_allocdirect(ip, nb,
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dbtofsb(fs, bp->b_blkno),
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ip->i_din1->di_db[nb],
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fs->fs_bsize, osize, bp);
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ip->i_size = smalllblktosize(fs, nb + 1);
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ip->i_din1->di_size = ip->i_size;
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ip->i_din1->di_db[nb] = dbtofsb(fs, bp->b_blkno);
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ip->i_flag |= IN_CHANGE | IN_UPDATE;
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if (flags & B_SYNC)
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bwrite(bp);
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else
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bawrite(bp);
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}
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}
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/*
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* The first NDADDR blocks are direct blocks
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|
*/
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if (lbn < NDADDR) {
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if (flags & B_METAONLY)
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panic("ffs_balloc_ufs1: B_METAONLY for direct block");
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nb = ip->i_din1->di_db[lbn];
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if (nb != 0 && ip->i_size >= smalllblktosize(fs, lbn + 1)) {
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error = bread(vp, lbn, fs->fs_bsize, NOCRED, &bp);
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if (error) {
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brelse(bp);
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return (error);
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}
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bp->b_blkno = fsbtodb(fs, nb);
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*bpp = bp;
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return (0);
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}
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if (nb != 0) {
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/*
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* Consider need to reallocate a fragment.
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*/
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osize = fragroundup(fs, blkoff(fs, ip->i_size));
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nsize = fragroundup(fs, size);
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if (nsize <= osize) {
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error = bread(vp, lbn, osize, NOCRED, &bp);
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if (error) {
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brelse(bp);
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return (error);
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}
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bp->b_blkno = fsbtodb(fs, nb);
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} else {
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error = ffs_realloccg(ip, lbn,
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ffs_blkpref_ufs1(ip, lbn, (int)lbn,
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&ip->i_din1->di_db[0]),
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osize, nsize, cred, &bp);
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if (error)
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return (error);
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if (DOINGSOFTDEP(vp))
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softdep_setup_allocdirect(ip, lbn,
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dbtofsb(fs, bp->b_blkno), nb,
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nsize, osize, bp);
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}
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} else {
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if (ip->i_size < smalllblktosize(fs, lbn + 1))
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nsize = fragroundup(fs, size);
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else
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nsize = fs->fs_bsize;
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error = ffs_alloc(ip, lbn,
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ffs_blkpref_ufs1(ip, lbn, (int)lbn,
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&ip->i_din1->di_db[0]),
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nsize, cred, &newb);
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if (error)
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return (error);
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bp = getblk(vp, lbn, nsize, 0, 0);
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bp->b_blkno = fsbtodb(fs, newb);
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if (flags & B_CLRBUF)
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vfs_bio_clrbuf(bp);
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if (DOINGSOFTDEP(vp))
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softdep_setup_allocdirect(ip, lbn, newb, 0,
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nsize, 0, bp);
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}
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ip->i_din1->di_db[lbn] = dbtofsb(fs, bp->b_blkno);
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ip->i_flag |= IN_CHANGE | IN_UPDATE;
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*bpp = bp;
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return (0);
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}
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/*
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* Determine the number of levels of indirection.
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*/
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pref = 0;
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if ((error = ufs_getlbns(vp, lbn, indirs, &num)) != 0)
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return(error);
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#ifdef DIAGNOSTIC
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if (num < 1)
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panic ("ffs_balloc_ufs1: ufs_getlbns returned indirect block");
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|
#endif
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/*
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* Fetch the first indirect block allocating if necessary.
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*/
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--num;
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nb = ip->i_din1->di_ib[indirs[0].in_off];
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allocib = NULL;
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allocblk = allociblk;
|
|
if (nb == 0) {
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pref = ffs_blkpref_ufs1(ip, lbn, 0, (ufs1_daddr_t *)0);
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|
if ((error = ffs_alloc(ip, lbn, pref, (int)fs->fs_bsize,
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|
cred, &newb)) != 0)
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return (error);
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|
nb = newb;
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*allocblk++ = nb;
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bp = getblk(vp, indirs[1].in_lbn, fs->fs_bsize, 0, 0);
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bp->b_blkno = fsbtodb(fs, nb);
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vfs_bio_clrbuf(bp);
|
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if (DOINGSOFTDEP(vp)) {
|
|
softdep_setup_allocdirect(ip, NDADDR + indirs[0].in_off,
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newb, 0, fs->fs_bsize, 0, bp);
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bdwrite(bp);
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|
} else {
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/*
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|
* Write synchronously so that indirect blocks
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|
* never point at garbage.
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*/
|
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if (DOINGASYNC(vp))
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bdwrite(bp);
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else if ((error = bwrite(bp)) != 0)
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|
goto fail;
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|
}
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|
allocib = &ip->i_din1->di_ib[indirs[0].in_off];
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|
*allocib = nb;
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ip->i_flag |= IN_CHANGE | IN_UPDATE;
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|
}
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|
/*
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|
* Fetch through the indirect blocks, allocating as necessary.
|
|
*/
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|
for (i = 1;;) {
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|
error = bread(vp,
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|
indirs[i].in_lbn, (int)fs->fs_bsize, NOCRED, &bp);
|
|
if (error) {
|
|
brelse(bp);
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|
goto fail;
|
|
}
|
|
bap = (ufs1_daddr_t *)bp->b_data;
|
|
nb = bap[indirs[i].in_off];
|
|
if (i == num)
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break;
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i += 1;
|
|
if (nb != 0) {
|
|
bqrelse(bp);
|
|
continue;
|
|
}
|
|
if (pref == 0)
|
|
pref = ffs_blkpref_ufs1(ip, lbn, 0, (ufs1_daddr_t *)0);
|
|
if ((error =
|
|
ffs_alloc(ip, lbn, pref, (int)fs->fs_bsize, cred, &newb)) != 0) {
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|
brelse(bp);
|
|
goto fail;
|
|
}
|
|
nb = newb;
|
|
*allocblk++ = nb;
|
|
nbp = getblk(vp, indirs[i].in_lbn, fs->fs_bsize, 0, 0);
|
|
nbp->b_blkno = fsbtodb(fs, nb);
|
|
vfs_bio_clrbuf(nbp);
|
|
if (DOINGSOFTDEP(vp)) {
|
|
softdep_setup_allocindir_meta(nbp, ip, bp,
|
|
indirs[i - 1].in_off, nb);
|
|
bdwrite(nbp);
|
|
} else {
|
|
/*
|
|
* Write synchronously so that indirect blocks
|
|
* never point at garbage.
|
|
*/
|
|
if ((error = bwrite(nbp)) != 0) {
|
|
brelse(bp);
|
|
goto fail;
|
|
}
|
|
}
|
|
bap[indirs[i - 1].in_off] = nb;
|
|
if (allocib == NULL && unwindidx < 0)
|
|
unwindidx = i - 1;
|
|
/*
|
|
* If required, write synchronously, otherwise use
|
|
* delayed write.
|
|
*/
|
|
if (flags & B_SYNC) {
|
|
bwrite(bp);
|
|
} else {
|
|
if (bp->b_bufsize == fs->fs_bsize)
|
|
bp->b_flags |= B_CLUSTEROK;
|
|
bdwrite(bp);
|
|
}
|
|
}
|
|
/*
|
|
* If asked only for the indirect block, then return it.
|
|
*/
|
|
if (flags & B_METAONLY) {
|
|
*bpp = bp;
|
|
return (0);
|
|
}
|
|
/*
|
|
* Get the data block, allocating if necessary.
|
|
*/
|
|
if (nb == 0) {
|
|
pref = ffs_blkpref_ufs1(ip, lbn, indirs[i].in_off, &bap[0]);
|
|
error = ffs_alloc(ip,
|
|
lbn, pref, (int)fs->fs_bsize, cred, &newb);
|
|
if (error) {
|
|
brelse(bp);
|
|
goto fail;
|
|
}
|
|
nb = newb;
|
|
*allocblk++ = nb;
|
|
nbp = getblk(vp, lbn, fs->fs_bsize, 0, 0);
|
|
nbp->b_blkno = fsbtodb(fs, nb);
|
|
if (flags & B_CLRBUF)
|
|
vfs_bio_clrbuf(nbp);
|
|
if (DOINGSOFTDEP(vp))
|
|
softdep_setup_allocindir_page(ip, lbn, bp,
|
|
indirs[i].in_off, nb, 0, nbp);
|
|
bap[indirs[i].in_off] = nb;
|
|
/*
|
|
* If required, write synchronously, otherwise use
|
|
* delayed write.
|
|
*/
|
|
if (flags & B_SYNC) {
|
|
bwrite(bp);
|
|
} else {
|
|
if (bp->b_bufsize == fs->fs_bsize)
|
|
bp->b_flags |= B_CLUSTEROK;
|
|
bdwrite(bp);
|
|
}
|
|
*bpp = nbp;
|
|
return (0);
|
|
}
|
|
brelse(bp);
|
|
if (flags & B_CLRBUF) {
|
|
error = bread(vp, lbn, (int)fs->fs_bsize, NOCRED, &nbp);
|
|
if (error) {
|
|
brelse(nbp);
|
|
goto fail;
|
|
}
|
|
} else {
|
|
nbp = getblk(vp, lbn, fs->fs_bsize, 0, 0);
|
|
nbp->b_blkno = fsbtodb(fs, nb);
|
|
}
|
|
*bpp = nbp;
|
|
return (0);
|
|
fail:
|
|
/*
|
|
* If we have failed part way through block allocation, we
|
|
* have to deallocate any indirect blocks that we have allocated.
|
|
* We have to fsync the file before we start to get rid of all
|
|
* of its dependencies so that we do not leave them dangling.
|
|
* We have to sync it at the end so that the soft updates code
|
|
* does not find any untracked changes. Although this is really
|
|
* slow, running out of disk space is not expected to be a common
|
|
* occurence. The error return from fsync is ignored as we already
|
|
* have an error to return to the user.
|
|
*/
|
|
(void) VOP_FSYNC(vp, cred, MNT_WAIT, td);
|
|
for (deallocated = 0, blkp = allociblk; blkp < allocblk; blkp++) {
|
|
ffs_blkfree(fs, ip->i_devvp, *blkp, fs->fs_bsize, ip->i_number);
|
|
deallocated += fs->fs_bsize;
|
|
}
|
|
if (allocib != NULL) {
|
|
*allocib = 0;
|
|
} else if (unwindidx >= 0) {
|
|
int r;
|
|
|
|
r = bread(vp, indirs[unwindidx].in_lbn,
|
|
(int)fs->fs_bsize, NOCRED, &bp);
|
|
if (r) {
|
|
panic("Could not unwind indirect block, error %d", r);
|
|
brelse(bp);
|
|
} else {
|
|
bap = (ufs1_daddr_t *)bp->b_data;
|
|
bap[indirs[unwindidx].in_off] = 0;
|
|
if (flags & B_SYNC) {
|
|
bwrite(bp);
|
|
} else {
|
|
if (bp->b_bufsize == fs->fs_bsize)
|
|
bp->b_flags |= B_CLUSTEROK;
|
|
bdwrite(bp);
|
|
}
|
|
}
|
|
}
|
|
if (deallocated) {
|
|
#ifdef QUOTA
|
|
/*
|
|
* Restore user's disk quota because allocation failed.
|
|
*/
|
|
(void) chkdq(ip, -btodb(deallocated), cred, FORCE);
|
|
#endif
|
|
ip->i_din1->di_blocks -= btodb(deallocated);
|
|
ip->i_flag |= IN_CHANGE | IN_UPDATE;
|
|
}
|
|
(void) VOP_FSYNC(vp, cred, MNT_WAIT, td);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Balloc defines the structure of file system storage
|
|
* by allocating the physical blocks on a device given
|
|
* the inode and the logical block number in a file.
|
|
* This is the allocation strategy for UFS2. Above is
|
|
* the allocation strategy for UFS1.
|
|
*/
|
|
int
|
|
ffs_balloc_ufs2(struct vnode *vp, off_t startoffset, int size,
|
|
struct ucred *cred, int flags, struct buf **bpp)
|
|
{
|
|
struct inode *ip;
|
|
ufs_lbn_t lbn, lastlbn;
|
|
struct fs *fs;
|
|
struct buf *bp, *nbp;
|
|
struct indir indirs[NIADDR + 2];
|
|
ufs2_daddr_t nb, newb, *bap, pref;
|
|
ufs2_daddr_t *allocib, *blkp, *allocblk, allociblk[NIADDR + 1];
|
|
int deallocated, osize, nsize, num, i, error;
|
|
int unwindidx = -1;
|
|
struct thread *td = curthread; /* XXX */
|
|
|
|
ip = VTOI(vp);
|
|
fs = ip->i_fs;
|
|
lbn = lblkno(fs, startoffset);
|
|
size = blkoff(fs, startoffset) + size;
|
|
if (size > fs->fs_bsize)
|
|
panic("ffs_balloc_ufs2: blk too big");
|
|
*bpp = NULL;
|
|
if (lbn < 0)
|
|
return (EFBIG);
|
|
|
|
/*
|
|
* If the next write will extend the file into a new block,
|
|
* and the file is currently composed of a fragment
|
|
* this fragment has to be extended to be a full block.
|
|
*/
|
|
lastlbn = lblkno(fs, ip->i_size);
|
|
if (lastlbn < NDADDR && lastlbn < lbn) {
|
|
nb = lastlbn;
|
|
osize = blksize(fs, ip, nb);
|
|
if (osize < fs->fs_bsize && osize > 0) {
|
|
error = ffs_realloccg(ip, nb,
|
|
ffs_blkpref_ufs2(ip, lastlbn, (int)nb,
|
|
&ip->i_din2->di_db[0]),
|
|
osize, (int)fs->fs_bsize, cred, &bp);
|
|
if (error)
|
|
return (error);
|
|
if (DOINGSOFTDEP(vp))
|
|
softdep_setup_allocdirect(ip, nb,
|
|
dbtofsb(fs, bp->b_blkno),
|
|
ip->i_din2->di_db[nb],
|
|
fs->fs_bsize, osize, bp);
|
|
ip->i_size = smalllblktosize(fs, nb + 1);
|
|
ip->i_din2->di_size = ip->i_size;
|
|
ip->i_din2->di_db[nb] = dbtofsb(fs, bp->b_blkno);
|
|
ip->i_flag |= IN_CHANGE | IN_UPDATE;
|
|
if (flags & B_SYNC)
|
|
bwrite(bp);
|
|
else
|
|
bawrite(bp);
|
|
}
|
|
}
|
|
/*
|
|
* The first NDADDR blocks are direct blocks
|
|
*/
|
|
if (lbn < NDADDR) {
|
|
if (flags & B_METAONLY)
|
|
panic("ffs_balloc_ufs2: B_METAONLY for direct block");
|
|
nb = ip->i_din2->di_db[lbn];
|
|
if (nb != 0 && ip->i_size >= smalllblktosize(fs, lbn + 1)) {
|
|
error = bread(vp, lbn, fs->fs_bsize, NOCRED, &bp);
|
|
if (error) {
|
|
brelse(bp);
|
|
return (error);
|
|
}
|
|
bp->b_blkno = fsbtodb(fs, nb);
|
|
*bpp = bp;
|
|
return (0);
|
|
}
|
|
if (nb != 0) {
|
|
/*
|
|
* Consider need to reallocate a fragment.
|
|
*/
|
|
osize = fragroundup(fs, blkoff(fs, ip->i_size));
|
|
nsize = fragroundup(fs, size);
|
|
if (nsize <= osize) {
|
|
error = bread(vp, lbn, osize, NOCRED, &bp);
|
|
if (error) {
|
|
brelse(bp);
|
|
return (error);
|
|
}
|
|
bp->b_blkno = fsbtodb(fs, nb);
|
|
} else {
|
|
error = ffs_realloccg(ip, lbn,
|
|
ffs_blkpref_ufs2(ip, lbn, (int)lbn,
|
|
&ip->i_din2->di_db[0]),
|
|
osize, nsize, cred, &bp);
|
|
if (error)
|
|
return (error);
|
|
if (DOINGSOFTDEP(vp))
|
|
softdep_setup_allocdirect(ip, lbn,
|
|
dbtofsb(fs, bp->b_blkno), nb,
|
|
nsize, osize, bp);
|
|
}
|
|
} else {
|
|
if (ip->i_size < smalllblktosize(fs, lbn + 1))
|
|
nsize = fragroundup(fs, size);
|
|
else
|
|
nsize = fs->fs_bsize;
|
|
error = ffs_alloc(ip, lbn,
|
|
ffs_blkpref_ufs2(ip, lbn, (int)lbn,
|
|
&ip->i_din2->di_db[0]),
|
|
nsize, cred, &newb);
|
|
if (error)
|
|
return (error);
|
|
bp = getblk(vp, lbn, nsize, 0, 0);
|
|
bp->b_blkno = fsbtodb(fs, newb);
|
|
if (flags & B_CLRBUF)
|
|
vfs_bio_clrbuf(bp);
|
|
if (DOINGSOFTDEP(vp))
|
|
softdep_setup_allocdirect(ip, lbn, newb, 0,
|
|
nsize, 0, bp);
|
|
}
|
|
ip->i_din2->di_db[lbn] = dbtofsb(fs, bp->b_blkno);
|
|
ip->i_flag |= IN_CHANGE | IN_UPDATE;
|
|
*bpp = bp;
|
|
return (0);
|
|
}
|
|
/*
|
|
* Determine the number of levels of indirection.
|
|
*/
|
|
pref = 0;
|
|
if ((error = ufs_getlbns(vp, lbn, indirs, &num)) != 0)
|
|
return(error);
|
|
#ifdef DIAGNOSTIC
|
|
if (num < 1)
|
|
panic ("ffs_balloc_ufs2: ufs_getlbns returned indirect block");
|
|
#endif
|
|
/*
|
|
* Fetch the first indirect block allocating if necessary.
|
|
*/
|
|
--num;
|
|
nb = ip->i_din2->di_ib[indirs[0].in_off];
|
|
allocib = NULL;
|
|
allocblk = allociblk;
|
|
if (nb == 0) {
|
|
pref = ffs_blkpref_ufs2(ip, lbn, 0, (ufs2_daddr_t *)0);
|
|
if ((error = ffs_alloc(ip, lbn, pref, (int)fs->fs_bsize,
|
|
cred, &newb)) != 0)
|
|
return (error);
|
|
nb = newb;
|
|
*allocblk++ = nb;
|
|
bp = getblk(vp, indirs[1].in_lbn, fs->fs_bsize, 0, 0);
|
|
bp->b_blkno = fsbtodb(fs, nb);
|
|
vfs_bio_clrbuf(bp);
|
|
if (DOINGSOFTDEP(vp)) {
|
|
softdep_setup_allocdirect(ip, NDADDR + indirs[0].in_off,
|
|
newb, 0, fs->fs_bsize, 0, bp);
|
|
bdwrite(bp);
|
|
} else {
|
|
/*
|
|
* Write synchronously so that indirect blocks
|
|
* never point at garbage.
|
|
*/
|
|
if (DOINGASYNC(vp))
|
|
bdwrite(bp);
|
|
else if ((error = bwrite(bp)) != 0)
|
|
goto fail;
|
|
}
|
|
allocib = &ip->i_din2->di_ib[indirs[0].in_off];
|
|
*allocib = nb;
|
|
ip->i_flag |= IN_CHANGE | IN_UPDATE;
|
|
}
|
|
/*
|
|
* Fetch through the indirect blocks, allocating as necessary.
|
|
*/
|
|
for (i = 1;;) {
|
|
error = bread(vp,
|
|
indirs[i].in_lbn, (int)fs->fs_bsize, NOCRED, &bp);
|
|
if (error) {
|
|
brelse(bp);
|
|
goto fail;
|
|
}
|
|
bap = (ufs2_daddr_t *)bp->b_data;
|
|
nb = bap[indirs[i].in_off];
|
|
if (i == num)
|
|
break;
|
|
i += 1;
|
|
if (nb != 0) {
|
|
bqrelse(bp);
|
|
continue;
|
|
}
|
|
if (pref == 0)
|
|
pref = ffs_blkpref_ufs2(ip, lbn, 0, (ufs2_daddr_t *)0);
|
|
if ((error =
|
|
ffs_alloc(ip, lbn, pref, (int)fs->fs_bsize, cred, &newb)) != 0) {
|
|
brelse(bp);
|
|
goto fail;
|
|
}
|
|
nb = newb;
|
|
*allocblk++ = nb;
|
|
nbp = getblk(vp, indirs[i].in_lbn, fs->fs_bsize, 0, 0);
|
|
nbp->b_blkno = fsbtodb(fs, nb);
|
|
vfs_bio_clrbuf(nbp);
|
|
if (DOINGSOFTDEP(vp)) {
|
|
softdep_setup_allocindir_meta(nbp, ip, bp,
|
|
indirs[i - 1].in_off, nb);
|
|
bdwrite(nbp);
|
|
} else {
|
|
/*
|
|
* Write synchronously so that indirect blocks
|
|
* never point at garbage.
|
|
*/
|
|
if ((error = bwrite(nbp)) != 0) {
|
|
brelse(bp);
|
|
goto fail;
|
|
}
|
|
}
|
|
bap[indirs[i - 1].in_off] = nb;
|
|
if (allocib == NULL && unwindidx < 0)
|
|
unwindidx = i - 1;
|
|
/*
|
|
* If required, write synchronously, otherwise use
|
|
* delayed write.
|
|
*/
|
|
if (flags & B_SYNC) {
|
|
bwrite(bp);
|
|
} else {
|
|
if (bp->b_bufsize == fs->fs_bsize)
|
|
bp->b_flags |= B_CLUSTEROK;
|
|
bdwrite(bp);
|
|
}
|
|
}
|
|
/*
|
|
* If asked only for the indirect block, then return it.
|
|
*/
|
|
if (flags & B_METAONLY) {
|
|
*bpp = bp;
|
|
return (0);
|
|
}
|
|
/*
|
|
* Get the data block, allocating if necessary.
|
|
*/
|
|
if (nb == 0) {
|
|
pref = ffs_blkpref_ufs2(ip, lbn, indirs[i].in_off, &bap[0]);
|
|
error = ffs_alloc(ip,
|
|
lbn, pref, (int)fs->fs_bsize, cred, &newb);
|
|
if (error) {
|
|
brelse(bp);
|
|
goto fail;
|
|
}
|
|
nb = newb;
|
|
*allocblk++ = nb;
|
|
nbp = getblk(vp, lbn, fs->fs_bsize, 0, 0);
|
|
nbp->b_blkno = fsbtodb(fs, nb);
|
|
if (flags & B_CLRBUF)
|
|
vfs_bio_clrbuf(nbp);
|
|
if (DOINGSOFTDEP(vp))
|
|
softdep_setup_allocindir_page(ip, lbn, bp,
|
|
indirs[i].in_off, nb, 0, nbp);
|
|
bap[indirs[i].in_off] = nb;
|
|
/*
|
|
* If required, write synchronously, otherwise use
|
|
* delayed write.
|
|
*/
|
|
if (flags & B_SYNC) {
|
|
bwrite(bp);
|
|
} else {
|
|
if (bp->b_bufsize == fs->fs_bsize)
|
|
bp->b_flags |= B_CLUSTEROK;
|
|
bdwrite(bp);
|
|
}
|
|
*bpp = nbp;
|
|
return (0);
|
|
}
|
|
brelse(bp);
|
|
if (flags & B_CLRBUF) {
|
|
error = bread(vp, lbn, (int)fs->fs_bsize, NOCRED, &nbp);
|
|
if (error) {
|
|
brelse(nbp);
|
|
goto fail;
|
|
}
|
|
} else {
|
|
nbp = getblk(vp, lbn, fs->fs_bsize, 0, 0);
|
|
nbp->b_blkno = fsbtodb(fs, nb);
|
|
}
|
|
*bpp = nbp;
|
|
return (0);
|
|
fail:
|
|
/*
|
|
* If we have failed part way through block allocation, we
|
|
* have to deallocate any indirect blocks that we have allocated.
|
|
* We have to fsync the file before we start to get rid of all
|
|
* of its dependencies so that we do not leave them dangling.
|
|
* We have to sync it at the end so that the soft updates code
|
|
* does not find any untracked changes. Although this is really
|
|
* slow, running out of disk space is not expected to be a common
|
|
* occurence. The error return from fsync is ignored as we already
|
|
* have an error to return to the user.
|
|
*/
|
|
(void) VOP_FSYNC(vp, cred, MNT_WAIT, td);
|
|
for (deallocated = 0, blkp = allociblk; blkp < allocblk; blkp++) {
|
|
ffs_blkfree(fs, ip->i_devvp, *blkp, fs->fs_bsize, ip->i_number);
|
|
deallocated += fs->fs_bsize;
|
|
}
|
|
if (allocib != NULL) {
|
|
*allocib = 0;
|
|
} else if (unwindidx >= 0) {
|
|
int r;
|
|
|
|
r = bread(vp, indirs[unwindidx].in_lbn,
|
|
(int)fs->fs_bsize, NOCRED, &bp);
|
|
if (r) {
|
|
panic("Could not unwind indirect block, error %d", r);
|
|
brelse(bp);
|
|
} else {
|
|
bap = (ufs2_daddr_t *)bp->b_data;
|
|
bap[indirs[unwindidx].in_off] = 0;
|
|
if (flags & B_SYNC) {
|
|
bwrite(bp);
|
|
} else {
|
|
if (bp->b_bufsize == fs->fs_bsize)
|
|
bp->b_flags |= B_CLUSTEROK;
|
|
bdwrite(bp);
|
|
}
|
|
}
|
|
}
|
|
if (deallocated) {
|
|
#ifdef QUOTA
|
|
/*
|
|
* Restore user's disk quota because allocation failed.
|
|
*/
|
|
(void) chkdq(ip, -btodb(deallocated), cred, FORCE);
|
|
#endif
|
|
ip->i_din2->di_blocks -= btodb(deallocated);
|
|
ip->i_flag |= IN_CHANGE | IN_UPDATE;
|
|
}
|
|
(void) VOP_FSYNC(vp, cred, MNT_WAIT, td);
|
|
return (error);
|
|
}
|