1052 lines
25 KiB
C
1052 lines
25 KiB
C
|
/* $NetBSD: ffs_balloc.c,v 1.54 2011/04/23 07:36:02 hannken Exp $ */
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Copyright (c) 2002 Networks Associates Technology, Inc.
|
||
|
|
* All rights reserved.
|
||
|
|
*
|
||
|
|
* This software was developed for the FreeBSD Project by Marshall
|
||
|
|
* Kirk McKusick and Network Associates Laboratories, the Security
|
||
|
|
* Research Division of Network Associates, Inc. under DARPA/SPAWAR
|
||
|
|
* contract N66001-01-C-8035 ("CBOSS"), as part of the DARPA CHATS
|
||
|
|
* research program
|
||
|
|
*
|
||
|
|
* Copyright (c) 1982, 1986, 1989, 1993
|
||
|
|
* The Regents of the University of California. All rights reserved.
|
||
|
|
*
|
||
|
|
* Redistribution and use in source and binary forms, with or without
|
||
|
|
* modification, are permitted provided that the following conditions
|
||
|
|
* are met:
|
||
|
|
* 1. Redistributions of source code must retain the above copyright
|
||
|
|
* notice, this list of conditions and the following disclaimer.
|
||
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
||
|
|
* notice, this list of conditions and the following disclaimer in the
|
||
|
|
* documentation and/or other materials provided with the distribution.
|
||
|
|
* 3. Neither the name of the University nor the names of its contributors
|
||
|
|
* may be used to endorse or promote products derived from this software
|
||
|
|
* without specific prior written permission.
|
||
|
|
*
|
||
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
||
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
||
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||
|
|
* SUCH DAMAGE.
|
||
|
|
*
|
||
|
|
* @(#)ffs_balloc.c 8.8 (Berkeley) 6/16/95
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <sys/cdefs.h>
|
||
|
|
__KERNEL_RCSID(0, "$NetBSD: ffs_balloc.c,v 1.54 2011/04/23 07:36:02 hannken Exp $");
|
||
|
|
|
||
|
|
#if defined(_KERNEL_OPT)
|
||
|
|
#include "opt_quota.h"
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#include <sys/param.h>
|
||
|
|
#include <sys/systm.h>
|
||
|
|
#include <sys/buf.h>
|
||
|
|
#include <sys/file.h>
|
||
|
|
#include <sys/mount.h>
|
||
|
|
#include <sys/vnode.h>
|
||
|
|
#include <sys/kauth.h>
|
||
|
|
#include <sys/fstrans.h>
|
||
|
|
|
||
|
|
#include <ufs/ufs/quota.h>
|
||
|
|
#include <ufs/ufs/ufsmount.h>
|
||
|
|
#include <ufs/ufs/inode.h>
|
||
|
|
#include <ufs/ufs/ufs_extern.h>
|
||
|
|
#include <ufs/ufs/ufs_bswap.h>
|
||
|
|
|
||
|
|
#include <ufs/ffs/fs.h>
|
||
|
|
#include <ufs/ffs/ffs_extern.h>
|
||
|
|
|
||
|
|
#include <uvm/uvm.h>
|
||
|
|
|
||
|
|
static int ffs_balloc_ufs1(struct vnode *, off_t, int, kauth_cred_t, int,
|
||
|
|
struct buf **);
|
||
|
|
static int ffs_balloc_ufs2(struct vnode *, off_t, int, kauth_cred_t, int,
|
||
|
|
struct buf **);
|
||
|
|
|
||
|
|
/*
|
||
|
|
* 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.
|
||
|
|
*/
|
||
|
|
|
||
|
|
int
|
||
|
|
ffs_balloc(struct vnode *vp, off_t off, int size, kauth_cred_t cred, int flags,
|
||
|
|
struct buf **bpp)
|
||
|
|
{
|
||
|
|
int error;
|
||
|
|
|
||
|
|
if (VTOI(vp)->i_fs->fs_magic == FS_UFS2_MAGIC)
|
||
|
|
error = ffs_balloc_ufs2(vp, off, size, cred, flags, bpp);
|
||
|
|
else
|
||
|
|
error = ffs_balloc_ufs1(vp, off, size, cred, flags, bpp);
|
||
|
|
|
||
|
|
if (error == 0 && bpp != NULL && (error = fscow_run(*bpp, false)) != 0)
|
||
|
|
brelse(*bpp, 0);
|
||
|
|
|
||
|
|
return error;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int
|
||
|
|
ffs_balloc_ufs1(struct vnode *vp, off_t off, int size, kauth_cred_t cred,
|
||
|
|
int flags, struct buf **bpp)
|
||
|
|
{
|
||
|
|
daddr_t lbn, lastlbn;
|
||
|
|
struct buf *bp, *nbp;
|
||
|
|
struct inode *ip = VTOI(vp);
|
||
|
|
struct fs *fs = ip->i_fs;
|
||
|
|
struct ufsmount *ump = ip->i_ump;
|
||
|
|
struct indir indirs[NIADDR + 2];
|
||
|
|
daddr_t newb, pref, nb;
|
||
|
|
int32_t *bap; /* XXX ondisk32 */
|
||
|
|
int deallocated, osize, nsize, num, i, error;
|
||
|
|
int32_t *blkp, *allocblk, allociblk[NIADDR + 1];
|
||
|
|
int32_t *allocib;
|
||
|
|
int unwindidx = -1;
|
||
|
|
#ifdef FFS_EI
|
||
|
|
const int needswap = UFS_FSNEEDSWAP(fs);
|
||
|
|
#endif
|
||
|
|
UVMHIST_FUNC("ffs_balloc"); UVMHIST_CALLED(ubchist);
|
||
|
|
|
||
|
|
lbn = lblkno(fs, off);
|
||
|
|
size = blkoff(fs, off) + size;
|
||
|
|
if (size > fs->fs_bsize)
|
||
|
|
panic("ffs_balloc: blk too big");
|
||
|
|
if (bpp != NULL) {
|
||
|
|
*bpp = NULL;
|
||
|
|
}
|
||
|
|
UVMHIST_LOG(ubchist, "vp %p lbn 0x%x size 0x%x", vp, lbn, size,0);
|
||
|
|
|
||
|
|
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) {
|
||
|
|
mutex_enter(&ump->um_lock);
|
||
|
|
error = ffs_realloccg(ip, nb,
|
||
|
|
ffs_blkpref_ufs1(ip, lastlbn, nb, flags,
|
||
|
|
&ip->i_ffs1_db[0]),
|
||
|
|
osize, (int)fs->fs_bsize, cred, bpp, &newb);
|
||
|
|
if (error)
|
||
|
|
return (error);
|
||
|
|
ip->i_size = lblktosize(fs, nb + 1);
|
||
|
|
ip->i_ffs1_size = ip->i_size;
|
||
|
|
uvm_vnp_setsize(vp, ip->i_ffs1_size);
|
||
|
|
ip->i_ffs1_db[nb] = ufs_rw32((u_int32_t)newb, needswap);
|
||
|
|
ip->i_flag |= IN_CHANGE | IN_UPDATE;
|
||
|
|
if (bpp && *bpp) {
|
||
|
|
if (flags & B_SYNC)
|
||
|
|
bwrite(*bpp);
|
||
|
|
else
|
||
|
|
bawrite(*bpp);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* The first NDADDR blocks are direct blocks
|
||
|
|
*/
|
||
|
|
|
||
|
|
if (lbn < NDADDR) {
|
||
|
|
nb = ufs_rw32(ip->i_ffs1_db[lbn], needswap);
|
||
|
|
if (nb != 0 && ip->i_size >= lblktosize(fs, lbn + 1)) {
|
||
|
|
|
||
|
|
/*
|
||
|
|
* The block is an already-allocated direct block
|
||
|
|
* and the file already extends past this block,
|
||
|
|
* thus this must be a whole block.
|
||
|
|
* Just read the block (if requested).
|
||
|
|
*/
|
||
|
|
|
||
|
|
if (bpp != NULL) {
|
||
|
|
error = bread(vp, lbn, fs->fs_bsize, NOCRED,
|
||
|
|
B_MODIFY, bpp);
|
||
|
|
if (error) {
|
||
|
|
brelse(*bpp, 0);
|
||
|
|
return (error);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
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) {
|
||
|
|
|
||
|
|
/*
|
||
|
|
* The existing block is already
|
||
|
|
* at least as big as we want.
|
||
|
|
* Just read the block (if requested).
|
||
|
|
*/
|
||
|
|
|
||
|
|
if (bpp != NULL) {
|
||
|
|
error = bread(vp, lbn, osize, NOCRED,
|
||
|
|
B_MODIFY, bpp);
|
||
|
|
if (error) {
|
||
|
|
brelse(*bpp, 0);
|
||
|
|
return (error);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return 0;
|
||
|
|
} else {
|
||
|
|
|
||
|
|
/*
|
||
|
|
* The existing block is smaller than we want,
|
||
|
|
* grow it.
|
||
|
|
*/
|
||
|
|
mutex_enter(&ump->um_lock);
|
||
|
|
error = ffs_realloccg(ip, lbn,
|
||
|
|
ffs_blkpref_ufs1(ip, lbn, (int)lbn, flags,
|
||
|
|
&ip->i_ffs1_db[0]),
|
||
|
|
osize, nsize, cred, bpp, &newb);
|
||
|
|
if (error)
|
||
|
|
return (error);
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
|
||
|
|
/*
|
||
|
|
* the block was not previously allocated,
|
||
|
|
* allocate a new block or fragment.
|
||
|
|
*/
|
||
|
|
|
||
|
|
if (ip->i_size < lblktosize(fs, lbn + 1))
|
||
|
|
nsize = fragroundup(fs, size);
|
||
|
|
else
|
||
|
|
nsize = fs->fs_bsize;
|
||
|
|
mutex_enter(&ump->um_lock);
|
||
|
|
error = ffs_alloc(ip, lbn,
|
||
|
|
ffs_blkpref_ufs1(ip, lbn, (int)lbn, flags,
|
||
|
|
&ip->i_ffs1_db[0]),
|
||
|
|
nsize, flags, cred, &newb);
|
||
|
|
if (error)
|
||
|
|
return (error);
|
||
|
|
if (bpp != NULL) {
|
||
|
|
error = ffs_getblk(vp, lbn, fsbtodb(fs, newb),
|
||
|
|
nsize, (flags & B_CLRBUF) != 0, bpp);
|
||
|
|
if (error)
|
||
|
|
return error;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
ip->i_ffs1_db[lbn] = ufs_rw32((u_int32_t)newb, needswap);
|
||
|
|
ip->i_flag |= IN_CHANGE | IN_UPDATE;
|
||
|
|
return (0);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Determine the number of levels of indirection.
|
||
|
|
*/
|
||
|
|
|
||
|
|
pref = 0;
|
||
|
|
if ((error = ufs_getlbns(vp, lbn, indirs, &num)) != 0)
|
||
|
|
return (error);
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Fetch the first indirect block allocating if necessary.
|
||
|
|
*/
|
||
|
|
|
||
|
|
--num;
|
||
|
|
nb = ufs_rw32(ip->i_ffs1_ib[indirs[0].in_off], needswap);
|
||
|
|
allocib = NULL;
|
||
|
|
allocblk = allociblk;
|
||
|
|
if (nb == 0) {
|
||
|
|
mutex_enter(&ump->um_lock);
|
||
|
|
pref = ffs_blkpref_ufs1(ip, lbn, 0, flags | B_METAONLY, NULL);
|
||
|
|
error = ffs_alloc(ip, lbn, pref, (int)fs->fs_bsize,
|
||
|
|
flags | B_METAONLY, cred, &newb);
|
||
|
|
if (error)
|
||
|
|
goto fail;
|
||
|
|
nb = newb;
|
||
|
|
*allocblk++ = nb;
|
||
|
|
error = ffs_getblk(vp, indirs[1].in_lbn, fsbtodb(fs, nb),
|
||
|
|
fs->fs_bsize, true, &bp);
|
||
|
|
if (error)
|
||
|
|
goto fail;
|
||
|
|
/*
|
||
|
|
* Write synchronously so that indirect blocks
|
||
|
|
* never point at garbage.
|
||
|
|
*/
|
||
|
|
if ((error = bwrite(bp)) != 0)
|
||
|
|
goto fail;
|
||
|
|
unwindidx = 0;
|
||
|
|
allocib = &ip->i_ffs1_ib[indirs[0].in_off];
|
||
|
|
*allocib = ufs_rw32(nb, needswap);
|
||
|
|
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, 0, &bp);
|
||
|
|
if (error) {
|
||
|
|
brelse(bp, 0);
|
||
|
|
goto fail;
|
||
|
|
}
|
||
|
|
bap = (int32_t *)bp->b_data; /* XXX ondisk32 */
|
||
|
|
nb = ufs_rw32(bap[indirs[i].in_off], needswap);
|
||
|
|
if (i == num)
|
||
|
|
break;
|
||
|
|
i++;
|
||
|
|
if (nb != 0) {
|
||
|
|
brelse(bp, 0);
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
if (fscow_run(bp, true) != 0) {
|
||
|
|
brelse(bp, 0);
|
||
|
|
goto fail;
|
||
|
|
}
|
||
|
|
mutex_enter(&ump->um_lock);
|
||
|
|
/* Try to keep snapshot indirect blocks contiguous. */
|
||
|
|
if (i == num && (ip->i_flags & SF_SNAPSHOT) != 0)
|
||
|
|
pref = ffs_blkpref_ufs1(ip, lbn, indirs[i-1].in_off,
|
||
|
|
flags | B_METAONLY, &bap[0]);
|
||
|
|
if (pref == 0)
|
||
|
|
pref = ffs_blkpref_ufs1(ip, lbn, 0, flags | B_METAONLY,
|
||
|
|
NULL);
|
||
|
|
error = ffs_alloc(ip, lbn, pref, (int)fs->fs_bsize,
|
||
|
|
flags | B_METAONLY, cred, &newb);
|
||
|
|
if (error) {
|
||
|
|
brelse(bp, 0);
|
||
|
|
goto fail;
|
||
|
|
}
|
||
|
|
nb = newb;
|
||
|
|
*allocblk++ = nb;
|
||
|
|
error = ffs_getblk(vp, indirs[i].in_lbn, fsbtodb(fs, nb),
|
||
|
|
fs->fs_bsize, true, &nbp);
|
||
|
|
if (error) {
|
||
|
|
brelse(bp, 0);
|
||
|
|
goto fail;
|
||
|
|
}
|
||
|
|
/*
|
||
|
|
* Write synchronously so that indirect blocks
|
||
|
|
* never point at garbage.
|
||
|
|
*/
|
||
|
|
if ((error = bwrite(nbp)) != 0) {
|
||
|
|
brelse(bp, 0);
|
||
|
|
goto fail;
|
||
|
|
}
|
||
|
|
if (unwindidx < 0)
|
||
|
|
unwindidx = i - 1;
|
||
|
|
bap[indirs[i - 1].in_off] = ufs_rw32(nb, needswap);
|
||
|
|
|
||
|
|
/*
|
||
|
|
* If required, write synchronously, otherwise use
|
||
|
|
* delayed write.
|
||
|
|
*/
|
||
|
|
|
||
|
|
if (flags & B_SYNC) {
|
||
|
|
bwrite(bp);
|
||
|
|
} else {
|
||
|
|
bdwrite(bp);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if (flags & B_METAONLY) {
|
||
|
|
KASSERT(bpp != NULL);
|
||
|
|
*bpp = bp;
|
||
|
|
return (0);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Get the data block, allocating if necessary.
|
||
|
|
*/
|
||
|
|
|
||
|
|
if (nb == 0) {
|
||
|
|
if (fscow_run(bp, true) != 0) {
|
||
|
|
brelse(bp, 0);
|
||
|
|
goto fail;
|
||
|
|
}
|
||
|
|
mutex_enter(&ump->um_lock);
|
||
|
|
pref = ffs_blkpref_ufs1(ip, lbn, indirs[num].in_off, flags,
|
||
|
|
&bap[0]);
|
||
|
|
error = ffs_alloc(ip, lbn, pref, (int)fs->fs_bsize, flags, cred,
|
||
|
|
&newb);
|
||
|
|
if (error) {
|
||
|
|
brelse(bp, 0);
|
||
|
|
goto fail;
|
||
|
|
}
|
||
|
|
nb = newb;
|
||
|
|
*allocblk++ = nb;
|
||
|
|
if (bpp != NULL) {
|
||
|
|
error = ffs_getblk(vp, lbn, fsbtodb(fs, nb),
|
||
|
|
fs->fs_bsize, (flags & B_CLRBUF) != 0, bpp);
|
||
|
|
if (error) {
|
||
|
|
brelse(bp, 0);
|
||
|
|
goto fail;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
bap[indirs[num].in_off] = ufs_rw32(nb, needswap);
|
||
|
|
if (allocib == NULL && unwindidx < 0) {
|
||
|
|
unwindidx = i - 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* If required, write synchronously, otherwise use
|
||
|
|
* delayed write.
|
||
|
|
*/
|
||
|
|
|
||
|
|
if (flags & B_SYNC) {
|
||
|
|
bwrite(bp);
|
||
|
|
} else {
|
||
|
|
bdwrite(bp);
|
||
|
|
}
|
||
|
|
return (0);
|
||
|
|
}
|
||
|
|
brelse(bp, 0);
|
||
|
|
if (bpp != NULL) {
|
||
|
|
if (flags & B_CLRBUF) {
|
||
|
|
error = bread(vp, lbn, (int)fs->fs_bsize,
|
||
|
|
NOCRED, B_MODIFY, &nbp);
|
||
|
|
if (error) {
|
||
|
|
brelse(nbp, 0);
|
||
|
|
goto fail;
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
error = ffs_getblk(vp, lbn, fsbtodb(fs, nb),
|
||
|
|
fs->fs_bsize, true, &nbp);
|
||
|
|
if (error)
|
||
|
|
goto fail;
|
||
|
|
}
|
||
|
|
*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.
|
||
|
|
*/
|
||
|
|
|
||
|
|
if (unwindidx >= 0) {
|
||
|
|
|
||
|
|
/*
|
||
|
|
* First write out any buffers we've created to resolve their
|
||
|
|
* softdeps. This must be done in reverse order of creation
|
||
|
|
* so that we resolve the dependencies in one pass.
|
||
|
|
* Write the cylinder group buffers for these buffers too.
|
||
|
|
*/
|
||
|
|
|
||
|
|
for (i = num; i >= unwindidx; i--) {
|
||
|
|
if (i == 0) {
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
if (ffs_getblk(vp, indirs[i].in_lbn, FFS_NOBLK,
|
||
|
|
fs->fs_bsize, false, &bp) != 0)
|
||
|
|
continue;
|
||
|
|
if (bp->b_oflags & BO_DELWRI) {
|
||
|
|
nb = fsbtodb(fs, cgtod(fs, dtog(fs,
|
||
|
|
dbtofsb(fs, bp->b_blkno))));
|
||
|
|
bwrite(bp);
|
||
|
|
if (ffs_getblk(ip->i_devvp, nb, FFS_NOBLK,
|
||
|
|
fs->fs_cgsize, false, &bp) != 0)
|
||
|
|
continue;
|
||
|
|
if (bp->b_oflags & BO_DELWRI) {
|
||
|
|
bwrite(bp);
|
||
|
|
} else {
|
||
|
|
brelse(bp, BC_INVAL);
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
brelse(bp, BC_INVAL);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Undo the partial allocation.
|
||
|
|
*/
|
||
|
|
if (unwindidx == 0) {
|
||
|
|
*allocib = 0;
|
||
|
|
ip->i_flag |= IN_CHANGE | IN_UPDATE;
|
||
|
|
} else {
|
||
|
|
int r;
|
||
|
|
|
||
|
|
r = bread(vp, indirs[unwindidx].in_lbn,
|
||
|
|
(int)fs->fs_bsize, NOCRED, 0, &bp);
|
||
|
|
if (r) {
|
||
|
|
panic("Could not unwind indirect block, error %d", r);
|
||
|
|
brelse(bp, 0);
|
||
|
|
} else {
|
||
|
|
bap = (int32_t *)bp->b_data; /* XXX ondisk32 */
|
||
|
|
bap[indirs[unwindidx].in_off] = 0;
|
||
|
|
bwrite(bp);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
for (i = unwindidx + 1; i <= num; i++) {
|
||
|
|
if (ffs_getblk(vp, indirs[i].in_lbn, FFS_NOBLK,
|
||
|
|
fs->fs_bsize, false, &bp) == 0)
|
||
|
|
brelse(bp, BC_INVAL);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
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 (deallocated) {
|
||
|
|
#if defined(QUOTA) || defined(QUOTA2)
|
||
|
|
/*
|
||
|
|
* Restore user's disk quota because allocation failed.
|
||
|
|
*/
|
||
|
|
(void)chkdq(ip, -btodb(deallocated), cred, FORCE);
|
||
|
|
#endif
|
||
|
|
ip->i_ffs1_blocks -= btodb(deallocated);
|
||
|
|
ip->i_flag |= IN_CHANGE | IN_UPDATE;
|
||
|
|
}
|
||
|
|
return (error);
|
||
|
|
}
|
||
|
|
|
||
|
|
static int
|
||
|
|
ffs_balloc_ufs2(struct vnode *vp, off_t off, int size, kauth_cred_t cred,
|
||
|
|
int flags, struct buf **bpp)
|
||
|
|
{
|
||
|
|
daddr_t lbn, lastlbn;
|
||
|
|
struct buf *bp, *nbp;
|
||
|
|
struct inode *ip = VTOI(vp);
|
||
|
|
struct fs *fs = ip->i_fs;
|
||
|
|
struct ufsmount *ump = ip->i_ump;
|
||
|
|
struct indir indirs[NIADDR + 2];
|
||
|
|
daddr_t newb, pref, nb;
|
||
|
|
int64_t *bap;
|
||
|
|
int deallocated, osize, nsize, num, i, error;
|
||
|
|
daddr_t *blkp, *allocblk, allociblk[NIADDR + 1];
|
||
|
|
int64_t *allocib;
|
||
|
|
int unwindidx = -1;
|
||
|
|
#ifdef FFS_EI
|
||
|
|
const int needswap = UFS_FSNEEDSWAP(fs);
|
||
|
|
#endif
|
||
|
|
UVMHIST_FUNC("ffs_balloc"); UVMHIST_CALLED(ubchist);
|
||
|
|
|
||
|
|
lbn = lblkno(fs, off);
|
||
|
|
size = blkoff(fs, off) + size;
|
||
|
|
if (size > fs->fs_bsize)
|
||
|
|
panic("ffs_balloc: blk too big");
|
||
|
|
if (bpp != NULL) {
|
||
|
|
*bpp = NULL;
|
||
|
|
}
|
||
|
|
UVMHIST_LOG(ubchist, "vp %p lbn 0x%x size 0x%x", vp, lbn, size,0);
|
||
|
|
|
||
|
|
if (lbn < 0)
|
||
|
|
return (EFBIG);
|
||
|
|
|
||
|
|
#ifdef notyet
|
||
|
|
/*
|
||
|
|
* Check for allocating external data.
|
||
|
|
*/
|
||
|
|
if (flags & IO_EXT) {
|
||
|
|
if (lbn >= NXADDR)
|
||
|
|
return (EFBIG);
|
||
|
|
/*
|
||
|
|
* If the next write will extend the data into a new block,
|
||
|
|
* and the data is currently composed of a fragment
|
||
|
|
* this fragment has to be extended to be a full block.
|
||
|
|
*/
|
||
|
|
lastlbn = lblkno(fs, dp->di_extsize);
|
||
|
|
if (lastlbn < lbn) {
|
||
|
|
nb = lastlbn;
|
||
|
|
osize = sblksize(fs, dp->di_extsize, nb);
|
||
|
|
if (osize < fs->fs_bsize && osize > 0) {
|
||
|
|
mutex_enter(&ump->um_lock);
|
||
|
|
error = ffs_realloccg(ip, -1 - nb,
|
||
|
|
dp->di_extb[nb],
|
||
|
|
ffs_blkpref_ufs2(ip, lastlbn, (int)nb,
|
||
|
|
flags, &dp->di_extb[0]),
|
||
|
|
osize,
|
||
|
|
(int)fs->fs_bsize, cred, &bp);
|
||
|
|
if (error)
|
||
|
|
return (error);
|
||
|
|
dp->di_extsize = smalllblktosize(fs, nb + 1);
|
||
|
|
dp->di_extb[nb] = dbtofsb(fs, bp->b_blkno);
|
||
|
|
bp->b_xflags |= BX_ALTDATA;
|
||
|
|
ip->i_flag |= IN_CHANGE | IN_UPDATE;
|
||
|
|
if (flags & IO_SYNC)
|
||
|
|
bwrite(bp);
|
||
|
|
else
|
||
|
|
bawrite(bp);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
/*
|
||
|
|
* All blocks are direct blocks
|
||
|
|
*/
|
||
|
|
if (flags & BA_METAONLY)
|
||
|
|
panic("ffs_balloc_ufs2: BA_METAONLY for ext block");
|
||
|
|
nb = dp->di_extb[lbn];
|
||
|
|
if (nb != 0 && dp->di_extsize >= smalllblktosize(fs, lbn + 1)) {
|
||
|
|
error = bread(vp, -1 - lbn, fs->fs_bsize,
|
||
|
|
NOCRED, 0, &bp);
|
||
|
|
if (error) {
|
||
|
|
brelse(bp, 0);
|
||
|
|
return (error);
|
||
|
|
}
|
||
|
|
mutex_enter(&bp->b_interlock);
|
||
|
|
bp->b_blkno = fsbtodb(fs, nb);
|
||
|
|
bp->b_xflags |= BX_ALTDATA;
|
||
|
|
mutex_exit(&bp->b_interlock);
|
||
|
|
*bpp = bp;
|
||
|
|
return (0);
|
||
|
|
}
|
||
|
|
if (nb != 0) {
|
||
|
|
/*
|
||
|
|
* Consider need to reallocate a fragment.
|
||
|
|
*/
|
||
|
|
osize = fragroundup(fs, blkoff(fs, dp->di_extsize));
|
||
|
|
nsize = fragroundup(fs, size);
|
||
|
|
if (nsize <= osize) {
|
||
|
|
error = bread(vp, -1 - lbn, osize,
|
||
|
|
NOCRED, 0, &bp);
|
||
|
|
if (error) {
|
||
|
|
brelse(bp, 0);
|
||
|
|
return (error);
|
||
|
|
}
|
||
|
|
mutex_enter(&bp->b_interlock);
|
||
|
|
bp->b_blkno = fsbtodb(fs, nb);
|
||
|
|
bp->b_xflags |= BX_ALTDATA;
|
||
|
|
mutex_exit(&bp->b_interlock);
|
||
|
|
} else {
|
||
|
|
mutex_enter(&ump->um_lock);
|
||
|
|
error = ffs_realloccg(ip, -1 - lbn,
|
||
|
|
dp->di_extb[lbn],
|
||
|
|
ffs_blkpref_ufs2(ip, lbn, (int)lbn, flags,
|
||
|
|
&dp->di_extb[0]),
|
||
|
|
osize, nsize, cred, &bp);
|
||
|
|
if (error)
|
||
|
|
return (error);
|
||
|
|
bp->b_xflags |= BX_ALTDATA;
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
if (dp->di_extsize < smalllblktosize(fs, lbn + 1))
|
||
|
|
nsize = fragroundup(fs, size);
|
||
|
|
else
|
||
|
|
nsize = fs->fs_bsize;
|
||
|
|
mutex_enter(&ump->um_lock);
|
||
|
|
error = ffs_alloc(ip, lbn,
|
||
|
|
ffs_blkpref_ufs2(ip, lbn, (int)lbn, flags,
|
||
|
|
&dp->di_extb[0]),
|
||
|
|
nsize, flags, cred, &newb);
|
||
|
|
if (error)
|
||
|
|
return (error);
|
||
|
|
error = ffs_getblk(vp, -1 - lbn, fsbtodb(fs, newb),
|
||
|
|
nsize, (flags & BA_CLRBUF) != 0, &bp);
|
||
|
|
if (error)
|
||
|
|
return error;
|
||
|
|
bp->b_xflags |= BX_ALTDATA;
|
||
|
|
}
|
||
|
|
dp->di_extb[lbn] = dbtofsb(fs, bp->b_blkno);
|
||
|
|
ip->i_flag |= IN_CHANGE | IN_UPDATE;
|
||
|
|
*bpp = bp;
|
||
|
|
return (0);
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
/*
|
||
|
|
* 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) {
|
||
|
|
mutex_enter(&ump->um_lock);
|
||
|
|
error = ffs_realloccg(ip, nb,
|
||
|
|
ffs_blkpref_ufs2(ip, lastlbn, nb, flags,
|
||
|
|
&ip->i_ffs2_db[0]),
|
||
|
|
osize, (int)fs->fs_bsize, cred, bpp, &newb);
|
||
|
|
if (error)
|
||
|
|
return (error);
|
||
|
|
ip->i_size = lblktosize(fs, nb + 1);
|
||
|
|
ip->i_ffs2_size = ip->i_size;
|
||
|
|
uvm_vnp_setsize(vp, ip->i_size);
|
||
|
|
ip->i_ffs2_db[nb] = ufs_rw64(newb, needswap);
|
||
|
|
ip->i_flag |= IN_CHANGE | IN_UPDATE;
|
||
|
|
if (bpp) {
|
||
|
|
if (flags & B_SYNC)
|
||
|
|
bwrite(*bpp);
|
||
|
|
else
|
||
|
|
bawrite(*bpp);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* The first NDADDR blocks are direct blocks
|
||
|
|
*/
|
||
|
|
|
||
|
|
if (lbn < NDADDR) {
|
||
|
|
nb = ufs_rw64(ip->i_ffs2_db[lbn], needswap);
|
||
|
|
if (nb != 0 && ip->i_size >= lblktosize(fs, lbn + 1)) {
|
||
|
|
|
||
|
|
/*
|
||
|
|
* The block is an already-allocated direct block
|
||
|
|
* and the file already extends past this block,
|
||
|
|
* thus this must be a whole block.
|
||
|
|
* Just read the block (if requested).
|
||
|
|
*/
|
||
|
|
|
||
|
|
if (bpp != NULL) {
|
||
|
|
error = bread(vp, lbn, fs->fs_bsize, NOCRED,
|
||
|
|
B_MODIFY, bpp);
|
||
|
|
if (error) {
|
||
|
|
brelse(*bpp, 0);
|
||
|
|
return (error);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
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) {
|
||
|
|
|
||
|
|
/*
|
||
|
|
* The existing block is already
|
||
|
|
* at least as big as we want.
|
||
|
|
* Just read the block (if requested).
|
||
|
|
*/
|
||
|
|
|
||
|
|
if (bpp != NULL) {
|
||
|
|
error = bread(vp, lbn, osize, NOCRED,
|
||
|
|
B_MODIFY, bpp);
|
||
|
|
if (error) {
|
||
|
|
brelse(*bpp, 0);
|
||
|
|
return (error);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return 0;
|
||
|
|
} else {
|
||
|
|
|
||
|
|
/*
|
||
|
|
* The existing block is smaller than we want,
|
||
|
|
* grow it.
|
||
|
|
*/
|
||
|
|
mutex_enter(&ump->um_lock);
|
||
|
|
error = ffs_realloccg(ip, lbn,
|
||
|
|
ffs_blkpref_ufs2(ip, lbn, (int)lbn, flags,
|
||
|
|
&ip->i_ffs2_db[0]),
|
||
|
|
osize, nsize, cred, bpp, &newb);
|
||
|
|
if (error)
|
||
|
|
return (error);
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
|
||
|
|
/*
|
||
|
|
* the block was not previously allocated,
|
||
|
|
* allocate a new block or fragment.
|
||
|
|
*/
|
||
|
|
|
||
|
|
if (ip->i_size < lblktosize(fs, lbn + 1))
|
||
|
|
nsize = fragroundup(fs, size);
|
||
|
|
else
|
||
|
|
nsize = fs->fs_bsize;
|
||
|
|
mutex_enter(&ump->um_lock);
|
||
|
|
error = ffs_alloc(ip, lbn,
|
||
|
|
ffs_blkpref_ufs2(ip, lbn, (int)lbn, flags,
|
||
|
|
&ip->i_ffs2_db[0]),
|
||
|
|
nsize, flags, cred, &newb);
|
||
|
|
if (error)
|
||
|
|
return (error);
|
||
|
|
if (bpp != NULL) {
|
||
|
|
error = ffs_getblk(vp, lbn, fsbtodb(fs, newb),
|
||
|
|
nsize, (flags & B_CLRBUF) != 0, bpp);
|
||
|
|
if (error)
|
||
|
|
return error;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
ip->i_ffs2_db[lbn] = ufs_rw64(newb, needswap);
|
||
|
|
ip->i_flag |= IN_CHANGE | IN_UPDATE;
|
||
|
|
return (0);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Determine the number of levels of indirection.
|
||
|
|
*/
|
||
|
|
|
||
|
|
pref = 0;
|
||
|
|
if ((error = ufs_getlbns(vp, lbn, indirs, &num)) != 0)
|
||
|
|
return (error);
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Fetch the first indirect block allocating if necessary.
|
||
|
|
*/
|
||
|
|
|
||
|
|
--num;
|
||
|
|
nb = ufs_rw64(ip->i_ffs2_ib[indirs[0].in_off], needswap);
|
||
|
|
allocib = NULL;
|
||
|
|
allocblk = allociblk;
|
||
|
|
if (nb == 0) {
|
||
|
|
mutex_enter(&ump->um_lock);
|
||
|
|
pref = ffs_blkpref_ufs2(ip, lbn, 0, flags | B_METAONLY, NULL);
|
||
|
|
error = ffs_alloc(ip, lbn, pref, (int)fs->fs_bsize,
|
||
|
|
flags | B_METAONLY, cred, &newb);
|
||
|
|
if (error)
|
||
|
|
goto fail;
|
||
|
|
nb = newb;
|
||
|
|
*allocblk++ = nb;
|
||
|
|
error = ffs_getblk(vp, indirs[1].in_lbn, fsbtodb(fs, nb),
|
||
|
|
fs->fs_bsize, true, &bp);
|
||
|
|
if (error)
|
||
|
|
goto fail;
|
||
|
|
/*
|
||
|
|
* Write synchronously so that indirect blocks
|
||
|
|
* never point at garbage.
|
||
|
|
*/
|
||
|
|
if ((error = bwrite(bp)) != 0)
|
||
|
|
goto fail;
|
||
|
|
unwindidx = 0;
|
||
|
|
allocib = &ip->i_ffs2_ib[indirs[0].in_off];
|
||
|
|
*allocib = ufs_rw64(nb, needswap);
|
||
|
|
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, 0, &bp);
|
||
|
|
if (error) {
|
||
|
|
brelse(bp, 0);
|
||
|
|
goto fail;
|
||
|
|
}
|
||
|
|
bap = (int64_t *)bp->b_data;
|
||
|
|
nb = ufs_rw64(bap[indirs[i].in_off], needswap);
|
||
|
|
if (i == num)
|
||
|
|
break;
|
||
|
|
i++;
|
||
|
|
if (nb != 0) {
|
||
|
|
brelse(bp, 0);
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
if (fscow_run(bp, true) != 0) {
|
||
|
|
brelse(bp, 0);
|
||
|
|
goto fail;
|
||
|
|
}
|
||
|
|
mutex_enter(&ump->um_lock);
|
||
|
|
/* Try to keep snapshot indirect blocks contiguous. */
|
||
|
|
if (i == num && (ip->i_flags & SF_SNAPSHOT) != 0)
|
||
|
|
pref = ffs_blkpref_ufs2(ip, lbn, indirs[i-1].in_off,
|
||
|
|
flags | B_METAONLY, &bap[0]);
|
||
|
|
if (pref == 0)
|
||
|
|
pref = ffs_blkpref_ufs2(ip, lbn, 0, flags | B_METAONLY,
|
||
|
|
NULL);
|
||
|
|
error = ffs_alloc(ip, lbn, pref, (int)fs->fs_bsize,
|
||
|
|
flags | B_METAONLY, cred, &newb);
|
||
|
|
if (error) {
|
||
|
|
brelse(bp, 0);
|
||
|
|
goto fail;
|
||
|
|
}
|
||
|
|
nb = newb;
|
||
|
|
*allocblk++ = nb;
|
||
|
|
error = ffs_getblk(vp, indirs[i].in_lbn, fsbtodb(fs, nb),
|
||
|
|
fs->fs_bsize, true, &nbp);
|
||
|
|
if (error) {
|
||
|
|
brelse(bp, 0);
|
||
|
|
goto fail;
|
||
|
|
}
|
||
|
|
/*
|
||
|
|
* Write synchronously so that indirect blocks
|
||
|
|
* never point at garbage.
|
||
|
|
*/
|
||
|
|
if ((error = bwrite(nbp)) != 0) {
|
||
|
|
brelse(bp, 0);
|
||
|
|
goto fail;
|
||
|
|
}
|
||
|
|
if (unwindidx < 0)
|
||
|
|
unwindidx = i - 1;
|
||
|
|
bap[indirs[i - 1].in_off] = ufs_rw64(nb, needswap);
|
||
|
|
|
||
|
|
/*
|
||
|
|
* If required, write synchronously, otherwise use
|
||
|
|
* delayed write.
|
||
|
|
*/
|
||
|
|
|
||
|
|
if (flags & B_SYNC) {
|
||
|
|
bwrite(bp);
|
||
|
|
} else {
|
||
|
|
bdwrite(bp);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if (flags & B_METAONLY) {
|
||
|
|
KASSERT(bpp != NULL);
|
||
|
|
*bpp = bp;
|
||
|
|
return (0);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Get the data block, allocating if necessary.
|
||
|
|
*/
|
||
|
|
|
||
|
|
if (nb == 0) {
|
||
|
|
if (fscow_run(bp, true) != 0) {
|
||
|
|
brelse(bp, 0);
|
||
|
|
goto fail;
|
||
|
|
}
|
||
|
|
mutex_enter(&ump->um_lock);
|
||
|
|
pref = ffs_blkpref_ufs2(ip, lbn, indirs[num].in_off, flags,
|
||
|
|
&bap[0]);
|
||
|
|
error = ffs_alloc(ip, lbn, pref, (int)fs->fs_bsize, flags, cred,
|
||
|
|
&newb);
|
||
|
|
if (error) {
|
||
|
|
brelse(bp, 0);
|
||
|
|
goto fail;
|
||
|
|
}
|
||
|
|
nb = newb;
|
||
|
|
*allocblk++ = nb;
|
||
|
|
if (bpp != NULL) {
|
||
|
|
error = ffs_getblk(vp, lbn, fsbtodb(fs, nb),
|
||
|
|
fs->fs_bsize, (flags & B_CLRBUF) != 0, bpp);
|
||
|
|
if (error) {
|
||
|
|
brelse(bp, 0);
|
||
|
|
goto fail;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
bap[indirs[num].in_off] = ufs_rw64(nb, needswap);
|
||
|
|
if (allocib == NULL && unwindidx < 0) {
|
||
|
|
unwindidx = i - 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* If required, write synchronously, otherwise use
|
||
|
|
* delayed write.
|
||
|
|
*/
|
||
|
|
|
||
|
|
if (flags & B_SYNC) {
|
||
|
|
bwrite(bp);
|
||
|
|
} else {
|
||
|
|
bdwrite(bp);
|
||
|
|
}
|
||
|
|
return (0);
|
||
|
|
}
|
||
|
|
brelse(bp, 0);
|
||
|
|
if (bpp != NULL) {
|
||
|
|
if (flags & B_CLRBUF) {
|
||
|
|
error = bread(vp, lbn, (int)fs->fs_bsize,
|
||
|
|
NOCRED, B_MODIFY, &nbp);
|
||
|
|
if (error) {
|
||
|
|
brelse(nbp, 0);
|
||
|
|
goto fail;
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
error = ffs_getblk(vp, lbn, fsbtodb(fs, nb),
|
||
|
|
fs->fs_bsize, true, &nbp);
|
||
|
|
if (error)
|
||
|
|
goto fail;
|
||
|
|
}
|
||
|
|
*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.
|
||
|
|
*/
|
||
|
|
|
||
|
|
if (unwindidx >= 0) {
|
||
|
|
|
||
|
|
/*
|
||
|
|
* First write out any buffers we've created to resolve their
|
||
|
|
* softdeps. This must be done in reverse order of creation
|
||
|
|
* so that we resolve the dependencies in one pass.
|
||
|
|
* Write the cylinder group buffers for these buffers too.
|
||
|
|
*/
|
||
|
|
|
||
|
|
for (i = num; i >= unwindidx; i--) {
|
||
|
|
if (i == 0) {
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
if (ffs_getblk(vp, indirs[i].in_lbn, FFS_NOBLK,
|
||
|
|
fs->fs_bsize, false, &bp) != 0)
|
||
|
|
continue;
|
||
|
|
if (bp->b_oflags & BO_DELWRI) {
|
||
|
|
nb = fsbtodb(fs, cgtod(fs, dtog(fs,
|
||
|
|
dbtofsb(fs, bp->b_blkno))));
|
||
|
|
bwrite(bp);
|
||
|
|
if (ffs_getblk(ip->i_devvp, nb, FFS_NOBLK,
|
||
|
|
fs->fs_cgsize, false, &bp) != 0)
|
||
|
|
continue;
|
||
|
|
if (bp->b_oflags & BO_DELWRI) {
|
||
|
|
bwrite(bp);
|
||
|
|
} else {
|
||
|
|
brelse(bp, BC_INVAL);
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
brelse(bp, BC_INVAL);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Now that any dependencies that we created have been
|
||
|
|
* resolved, we can undo the partial allocation.
|
||
|
|
*/
|
||
|
|
|
||
|
|
if (unwindidx == 0) {
|
||
|
|
*allocib = 0;
|
||
|
|
ip->i_flag |= IN_CHANGE | IN_UPDATE;
|
||
|
|
} else {
|
||
|
|
int r;
|
||
|
|
|
||
|
|
r = bread(vp, indirs[unwindidx].in_lbn,
|
||
|
|
(int)fs->fs_bsize, NOCRED, 0, &bp);
|
||
|
|
if (r) {
|
||
|
|
panic("Could not unwind indirect block, error %d", r);
|
||
|
|
brelse(bp, 0);
|
||
|
|
} else {
|
||
|
|
bap = (int64_t *)bp->b_data;
|
||
|
|
bap[indirs[unwindidx].in_off] = 0;
|
||
|
|
bwrite(bp);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
for (i = unwindidx + 1; i <= num; i++) {
|
||
|
|
if (ffs_getblk(vp, indirs[i].in_lbn, FFS_NOBLK,
|
||
|
|
fs->fs_bsize, false, &bp) == 0)
|
||
|
|
brelse(bp, BC_INVAL);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
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 (deallocated) {
|
||
|
|
#if defined(QUOTA) || defined(QUOTA2)
|
||
|
|
/*
|
||
|
|
* Restore user's disk quota because allocation failed.
|
||
|
|
*/
|
||
|
|
(void)chkdq(ip, -btodb(deallocated), cred, FORCE);
|
||
|
|
#endif
|
||
|
|
ip->i_ffs2_blocks -= btodb(deallocated);
|
||
|
|
ip->i_flag |= IN_CHANGE | IN_UPDATE;
|
||
|
|
}
|
||
|
|
|
||
|
|
return (error);
|
||
|
|
}
|