84d9c625bf
- Fix for possible unset uid/gid in toproto
- Fix for default mtree style
- Update libelf
- Importing libexecinfo
- Resynchronize GCC, mpc, gmp, mpfr
- build.sh: Replace params with show-params.
This has been done as the make target has been renamed in the same
way, while a new target named params has been added. This new
target generates a file containing all the parameters, instead of
printing it on the console.
- Update test48 with new etc/services (Fix by Ben Gras <ben@minix3.org)
get getservbyport() out of the inner loop
Change-Id: Ie6ad5226fa2621ff9f0dee8782ea48f9443d2091
400 lines
11 KiB
C
400 lines
11 KiB
C
/* $NetBSD: ext2fs_balloc.c,v 1.39 2013/06/23 07:28:37 dholland Exp $ */
|
|
|
|
/*
|
|
* 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 8.4 (Berkeley) 9/23/93
|
|
* Modified for ext2fs by Manuel Bouyer.
|
|
*/
|
|
|
|
/*
|
|
* Copyright (c) 1997 Manuel Bouyer.
|
|
*
|
|
* 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.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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 8.4 (Berkeley) 9/23/93
|
|
* Modified for ext2fs by Manuel Bouyer.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__KERNEL_RCSID(0, "$NetBSD: ext2fs_balloc.c,v 1.39 2013/06/23 07:28:37 dholland Exp $");
|
|
|
|
#if defined(_KERNEL_OPT)
|
|
#include "opt_uvmhist.h"
|
|
#endif
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/buf.h>
|
|
#include <sys/proc.h>
|
|
#include <sys/file.h>
|
|
#include <sys/vnode.h>
|
|
#include <sys/mount.h>
|
|
#include <sys/kauth.h>
|
|
|
|
#include <uvm/uvm.h>
|
|
|
|
#include <ufs/ufs/inode.h>
|
|
#include <ufs/ufs/ufs_extern.h>
|
|
|
|
#include <ufs/ext2fs/ext2fs.h>
|
|
#include <ufs/ext2fs/ext2fs_extern.h>
|
|
|
|
/*
|
|
* 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
|
|
ext2fs_balloc(struct inode *ip, daddr_t bn, int size,
|
|
kauth_cred_t cred, struct buf **bpp, int flags)
|
|
{
|
|
struct m_ext2fs *fs;
|
|
daddr_t nb;
|
|
struct buf *bp, *nbp;
|
|
struct vnode *vp = ITOV(ip);
|
|
struct indir indirs[EXT2FS_NIADDR + 2];
|
|
daddr_t newb, lbn, pref;
|
|
int32_t *bap; /* XXX ondisk32 */
|
|
int num, i, error;
|
|
u_int deallocated;
|
|
daddr_t *blkp, *allocblk, allociblk[EXT2FS_NIADDR + 1];
|
|
int32_t *allocib; /* XXX ondisk32 */
|
|
int unwindidx = -1;
|
|
UVMHIST_FUNC("ext2fs_balloc"); UVMHIST_CALLED(ubchist);
|
|
|
|
UVMHIST_LOG(ubchist, "bn 0x%x", bn,0,0,0);
|
|
|
|
if (bpp != NULL) {
|
|
*bpp = NULL;
|
|
}
|
|
if (bn < 0)
|
|
return (EFBIG);
|
|
fs = ip->i_e2fs;
|
|
lbn = bn;
|
|
|
|
/*
|
|
* The first EXT2FS_NDADDR blocks are direct blocks
|
|
*/
|
|
if (bn < EXT2FS_NDADDR) {
|
|
/* XXX ondisk32 */
|
|
nb = fs2h32(ip->i_e2fs_blocks[bn]);
|
|
if (nb != 0) {
|
|
|
|
/*
|
|
* the block is already allocated, just read it.
|
|
*/
|
|
|
|
if (bpp != NULL) {
|
|
error = bread(vp, bn, fs->e2fs_bsize, NOCRED,
|
|
B_MODIFY, &bp);
|
|
if (error) {
|
|
return (error);
|
|
}
|
|
*bpp = bp;
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* allocate a new direct block.
|
|
*/
|
|
|
|
error = ext2fs_alloc(ip, bn,
|
|
ext2fs_blkpref(ip, bn, bn, &ip->i_e2fs_blocks[0]),
|
|
cred, &newb);
|
|
if (error)
|
|
return (error);
|
|
ip->i_e2fs_last_lblk = lbn;
|
|
ip->i_e2fs_last_blk = newb;
|
|
/* XXX ondisk32 */
|
|
ip->i_e2fs_blocks[bn] = h2fs32((int32_t)newb);
|
|
ip->i_flag |= IN_CHANGE | IN_UPDATE;
|
|
if (bpp != NULL) {
|
|
bp = getblk(vp, bn, fs->e2fs_bsize, 0, 0);
|
|
bp->b_blkno = EXT2_FSBTODB(fs, newb);
|
|
if (flags & B_CLRBUF)
|
|
clrbuf(bp);
|
|
*bpp = bp;
|
|
}
|
|
return (0);
|
|
}
|
|
/*
|
|
* Determine the number of levels of indirection.
|
|
*/
|
|
pref = 0;
|
|
if ((error = ufs_getlbns(vp, bn, indirs, &num)) != 0)
|
|
return(error);
|
|
#ifdef DIAGNOSTIC
|
|
if (num < 1)
|
|
panic ("ext2fs_balloc: ufs_getlbns returned indirect block\n");
|
|
#endif
|
|
/*
|
|
* Fetch the first indirect block allocating if necessary.
|
|
*/
|
|
--num;
|
|
/* XXX ondisk32 */
|
|
nb = fs2h32(ip->i_e2fs_blocks[EXT2FS_NDADDR + indirs[0].in_off]);
|
|
allocib = NULL;
|
|
allocblk = allociblk;
|
|
if (nb == 0) {
|
|
pref = ext2fs_blkpref(ip, lbn, 0, (int32_t *)0);
|
|
error = ext2fs_alloc(ip, lbn, pref, cred, &newb);
|
|
if (error)
|
|
return (error);
|
|
nb = newb;
|
|
*allocblk++ = nb;
|
|
ip->i_e2fs_last_blk = newb;
|
|
bp = getblk(vp, indirs[1].in_lbn, fs->e2fs_bsize, 0, 0);
|
|
bp->b_blkno = EXT2_FSBTODB(fs, newb);
|
|
clrbuf(bp);
|
|
/*
|
|
* Write synchronously so that indirect blocks
|
|
* never point at garbage.
|
|
*/
|
|
if ((error = bwrite(bp)) != 0)
|
|
goto fail;
|
|
unwindidx = 0;
|
|
allocib = &ip->i_e2fs_blocks[EXT2FS_NDADDR + indirs[0].in_off];
|
|
/* XXX ondisk32 */
|
|
*allocib = h2fs32((int32_t)newb);
|
|
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->e2fs_bsize, NOCRED, 0, &bp);
|
|
if (error) {
|
|
goto fail;
|
|
}
|
|
bap = (int32_t *)bp->b_data; /* XXX ondisk32 */
|
|
nb = fs2h32(bap[indirs[i].in_off]);
|
|
if (i == num)
|
|
break;
|
|
i++;
|
|
if (nb != 0) {
|
|
brelse(bp, 0);
|
|
continue;
|
|
}
|
|
pref = ext2fs_blkpref(ip, lbn, 0, (int32_t *)0);
|
|
error = ext2fs_alloc(ip, lbn, pref, cred, &newb);
|
|
if (error) {
|
|
brelse(bp, 0);
|
|
goto fail;
|
|
}
|
|
nb = newb;
|
|
*allocblk++ = nb;
|
|
ip->i_e2fs_last_blk = newb;
|
|
nbp = getblk(vp, indirs[i].in_lbn, fs->e2fs_bsize, 0, 0);
|
|
nbp->b_blkno = EXT2_FSBTODB(fs, nb);
|
|
clrbuf(nbp);
|
|
/*
|
|
* 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;
|
|
/* XXX ondisk32 */
|
|
bap[indirs[i - 1].in_off] = h2fs32((int32_t)nb);
|
|
/*
|
|
* If required, write synchronously, otherwise use
|
|
* delayed write.
|
|
*/
|
|
if (flags & B_SYNC) {
|
|
bwrite(bp);
|
|
} else {
|
|
bdwrite(bp);
|
|
}
|
|
}
|
|
/*
|
|
* Get the data block, allocating if necessary.
|
|
*/
|
|
if (nb == 0) {
|
|
pref = ext2fs_blkpref(ip, lbn, indirs[num].in_off, &bap[0]);
|
|
error = ext2fs_alloc(ip, lbn, pref, cred, &newb);
|
|
if (error) {
|
|
brelse(bp, 0);
|
|
goto fail;
|
|
}
|
|
nb = newb;
|
|
*allocblk++ = nb;
|
|
ip->i_e2fs_last_lblk = lbn;
|
|
ip->i_e2fs_last_blk = newb;
|
|
/* XXX ondisk32 */
|
|
bap[indirs[num].in_off] = h2fs32((int32_t)nb);
|
|
/*
|
|
* If required, write synchronously, otherwise use
|
|
* delayed write.
|
|
*/
|
|
if (flags & B_SYNC) {
|
|
bwrite(bp);
|
|
} else {
|
|
bdwrite(bp);
|
|
}
|
|
if (bpp != NULL) {
|
|
nbp = getblk(vp, lbn, fs->e2fs_bsize, 0, 0);
|
|
nbp->b_blkno = EXT2_FSBTODB(fs, nb);
|
|
if (flags & B_CLRBUF)
|
|
clrbuf(nbp);
|
|
*bpp = nbp;
|
|
}
|
|
return (0);
|
|
}
|
|
brelse(bp, 0);
|
|
if (bpp != NULL) {
|
|
if (flags & B_CLRBUF) {
|
|
error = bread(vp, lbn, (int)fs->e2fs_bsize, NOCRED,
|
|
B_MODIFY, &nbp);
|
|
if (error) {
|
|
goto fail;
|
|
}
|
|
} else {
|
|
nbp = getblk(vp, lbn, fs->e2fs_bsize, 0, 0);
|
|
nbp->b_blkno = EXT2_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.
|
|
*/
|
|
for (deallocated = 0, blkp = allociblk; blkp < allocblk; blkp++) {
|
|
ext2fs_blkfree(ip, *blkp);
|
|
deallocated += fs->e2fs_bsize;
|
|
}
|
|
if (unwindidx >= 0) {
|
|
if (unwindidx == 0) {
|
|
*allocib = 0;
|
|
} else {
|
|
int r;
|
|
|
|
r = bread(vp, indirs[unwindidx].in_lbn,
|
|
(int)fs->e2fs_bsize, NOCRED, B_MODIFY, &bp);
|
|
if (r) {
|
|
panic("Could not unwind indirect block, error %d", r);
|
|
} else {
|
|
bap = (int32_t *)bp->b_data; /* XXX ondisk32 */
|
|
bap[indirs[unwindidx].in_off] = 0;
|
|
if (flags & B_SYNC)
|
|
bwrite(bp);
|
|
else
|
|
bdwrite(bp);
|
|
}
|
|
}
|
|
for (i = unwindidx + 1; i <= num; i++) {
|
|
bp = getblk(vp, indirs[i].in_lbn, (int)fs->e2fs_bsize,
|
|
0, 0);
|
|
brelse(bp, BC_INVAL);
|
|
}
|
|
}
|
|
if (deallocated) {
|
|
ext2fs_setnblock(ip, ext2fs_nblock(ip) - btodb(deallocated));
|
|
ip->i_e2fs_flags |= IN_CHANGE | IN_UPDATE;
|
|
}
|
|
return error;
|
|
}
|
|
|
|
int
|
|
ext2fs_gop_alloc(struct vnode *vp, off_t off, off_t len, int flags,
|
|
kauth_cred_t cred)
|
|
{
|
|
struct inode *ip = VTOI(vp);
|
|
struct m_ext2fs *fs = ip->i_e2fs;
|
|
int error, delta, bshift, bsize;
|
|
UVMHIST_FUNC("ext2fs_gop_alloc"); UVMHIST_CALLED(ubchist);
|
|
|
|
bshift = fs->e2fs_bshift;
|
|
bsize = 1 << bshift;
|
|
|
|
delta = off & (bsize - 1);
|
|
off -= delta;
|
|
len += delta;
|
|
|
|
while (len > 0) {
|
|
bsize = min(bsize, len);
|
|
UVMHIST_LOG(ubchist, "off 0x%x len 0x%x bsize 0x%x",
|
|
off, len, bsize, 0);
|
|
|
|
error = ext2fs_balloc(ip, ext2_lblkno(fs, off), bsize, cred,
|
|
NULL, flags);
|
|
if (error) {
|
|
UVMHIST_LOG(ubchist, "error %d", error, 0,0,0);
|
|
return error;
|
|
}
|
|
|
|
/*
|
|
* increase file size now, ext2fs_balloc() requires that
|
|
* EOF be up-to-date before each call.
|
|
*/
|
|
|
|
if (ext2fs_size(ip) < off + bsize) {
|
|
UVMHIST_LOG(ubchist, "old 0x%lx%8lx new 0x%lx%8lx",
|
|
/* Note that arguments are always cast to u_long. */
|
|
ext2fs_size(ip) >> 32,
|
|
ext2fs_size(ip) & 0xffffffff,
|
|
(off + bsize) >> 32,
|
|
(off + bsize) & 0xffffffff);
|
|
error = ext2fs_setsize(ip, off + bsize);
|
|
if (error) {
|
|
UVMHIST_LOG(ubchist, "error %d", error, 0,0,0);
|
|
return error;
|
|
}
|
|
}
|
|
|
|
off += bsize;
|
|
len -= bsize;
|
|
}
|
|
return 0;
|
|
}
|