471 строка
14 KiB
C
471 строка
14 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
/*
|
|
* Copyright (c) 2000-2006 Silicon Graphics, Inc.
|
|
* All Rights Reserved.
|
|
*/
|
|
#include "xfs.h"
|
|
#include "xfs_fs.h"
|
|
#include "xfs_shared.h"
|
|
#include "xfs_format.h"
|
|
#include "xfs_log_format.h"
|
|
#include "xfs_trans_resv.h"
|
|
#include "xfs_mount.h"
|
|
#include "xfs_inode.h"
|
|
#include "xfs_trans.h"
|
|
#include "xfs_inode_item.h"
|
|
#include "xfs_trace.h"
|
|
#include "xfs_trans_priv.h"
|
|
#include "xfs_buf_item.h"
|
|
#include "xfs_log.h"
|
|
#include "xfs_error.h"
|
|
#include "xfs_log_priv.h"
|
|
#include "xfs_log_recover.h"
|
|
#include "xfs_icache.h"
|
|
#include "xfs_bmap_btree.h"
|
|
|
|
STATIC void
|
|
xlog_recover_inode_ra_pass2(
|
|
struct xlog *log,
|
|
struct xlog_recover_item *item)
|
|
{
|
|
if (item->ri_buf[0].i_len == sizeof(struct xfs_inode_log_format)) {
|
|
struct xfs_inode_log_format *ilfp = item->ri_buf[0].i_addr;
|
|
|
|
xlog_buf_readahead(log, ilfp->ilf_blkno, ilfp->ilf_len,
|
|
&xfs_inode_buf_ra_ops);
|
|
} else {
|
|
struct xfs_inode_log_format_32 *ilfp = item->ri_buf[0].i_addr;
|
|
|
|
xlog_buf_readahead(log, ilfp->ilf_blkno, ilfp->ilf_len,
|
|
&xfs_inode_buf_ra_ops);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Inode fork owner changes
|
|
*
|
|
* If we have been told that we have to reparent the inode fork, it's because an
|
|
* extent swap operation on a CRC enabled filesystem has been done and we are
|
|
* replaying it. We need to walk the BMBT of the appropriate fork and change the
|
|
* owners of it.
|
|
*
|
|
* The complexity here is that we don't have an inode context to work with, so
|
|
* after we've replayed the inode we need to instantiate one. This is where the
|
|
* fun begins.
|
|
*
|
|
* We are in the middle of log recovery, so we can't run transactions. That
|
|
* means we cannot use cache coherent inode instantiation via xfs_iget(), as
|
|
* that will result in the corresponding iput() running the inode through
|
|
* xfs_inactive(). If we've just replayed an inode core that changes the link
|
|
* count to zero (i.e. it's been unlinked), then xfs_inactive() will run
|
|
* transactions (bad!).
|
|
*
|
|
* So, to avoid this, we instantiate an inode directly from the inode core we've
|
|
* just recovered. We have the buffer still locked, and all we really need to
|
|
* instantiate is the inode core and the forks being modified. We can do this
|
|
* manually, then run the inode btree owner change, and then tear down the
|
|
* xfs_inode without having to run any transactions at all.
|
|
*
|
|
* Also, because we don't have a transaction context available here but need to
|
|
* gather all the buffers we modify for writeback so we pass the buffer_list
|
|
* instead for the operation to use.
|
|
*/
|
|
|
|
STATIC int
|
|
xfs_recover_inode_owner_change(
|
|
struct xfs_mount *mp,
|
|
struct xfs_dinode *dip,
|
|
struct xfs_inode_log_format *in_f,
|
|
struct list_head *buffer_list)
|
|
{
|
|
struct xfs_inode *ip;
|
|
int error;
|
|
|
|
ASSERT(in_f->ilf_fields & (XFS_ILOG_DOWNER|XFS_ILOG_AOWNER));
|
|
|
|
ip = xfs_inode_alloc(mp, in_f->ilf_ino);
|
|
if (!ip)
|
|
return -ENOMEM;
|
|
|
|
/* instantiate the inode */
|
|
ASSERT(dip->di_version >= 3);
|
|
|
|
error = xfs_inode_from_disk(ip, dip);
|
|
if (error)
|
|
goto out_free_ip;
|
|
|
|
if (in_f->ilf_fields & XFS_ILOG_DOWNER) {
|
|
ASSERT(in_f->ilf_fields & XFS_ILOG_DBROOT);
|
|
error = xfs_bmbt_change_owner(NULL, ip, XFS_DATA_FORK,
|
|
ip->i_ino, buffer_list);
|
|
if (error)
|
|
goto out_free_ip;
|
|
}
|
|
|
|
if (in_f->ilf_fields & XFS_ILOG_AOWNER) {
|
|
ASSERT(in_f->ilf_fields & XFS_ILOG_ABROOT);
|
|
error = xfs_bmbt_change_owner(NULL, ip, XFS_ATTR_FORK,
|
|
ip->i_ino, buffer_list);
|
|
if (error)
|
|
goto out_free_ip;
|
|
}
|
|
|
|
out_free_ip:
|
|
xfs_inode_free(ip);
|
|
return error;
|
|
}
|
|
|
|
static inline bool xfs_log_dinode_has_bigtime(const struct xfs_log_dinode *ld)
|
|
{
|
|
return ld->di_version >= 3 &&
|
|
(ld->di_flags2 & XFS_DIFLAG2_BIGTIME);
|
|
}
|
|
|
|
/* Convert a log timestamp to an ondisk timestamp. */
|
|
static inline xfs_timestamp_t
|
|
xfs_log_dinode_to_disk_ts(
|
|
struct xfs_log_dinode *from,
|
|
const xfs_log_timestamp_t its)
|
|
{
|
|
struct xfs_legacy_timestamp *lts;
|
|
struct xfs_log_legacy_timestamp *lits;
|
|
xfs_timestamp_t ts;
|
|
|
|
if (xfs_log_dinode_has_bigtime(from))
|
|
return cpu_to_be64(its);
|
|
|
|
lts = (struct xfs_legacy_timestamp *)&ts;
|
|
lits = (struct xfs_log_legacy_timestamp *)&its;
|
|
lts->t_sec = cpu_to_be32(lits->t_sec);
|
|
lts->t_nsec = cpu_to_be32(lits->t_nsec);
|
|
|
|
return ts;
|
|
}
|
|
|
|
STATIC void
|
|
xfs_log_dinode_to_disk(
|
|
struct xfs_log_dinode *from,
|
|
struct xfs_dinode *to)
|
|
{
|
|
to->di_magic = cpu_to_be16(from->di_magic);
|
|
to->di_mode = cpu_to_be16(from->di_mode);
|
|
to->di_version = from->di_version;
|
|
to->di_format = from->di_format;
|
|
to->di_onlink = 0;
|
|
to->di_uid = cpu_to_be32(from->di_uid);
|
|
to->di_gid = cpu_to_be32(from->di_gid);
|
|
to->di_nlink = cpu_to_be32(from->di_nlink);
|
|
to->di_projid_lo = cpu_to_be16(from->di_projid_lo);
|
|
to->di_projid_hi = cpu_to_be16(from->di_projid_hi);
|
|
memcpy(to->di_pad, from->di_pad, sizeof(to->di_pad));
|
|
|
|
to->di_atime = xfs_log_dinode_to_disk_ts(from, from->di_atime);
|
|
to->di_mtime = xfs_log_dinode_to_disk_ts(from, from->di_mtime);
|
|
to->di_ctime = xfs_log_dinode_to_disk_ts(from, from->di_ctime);
|
|
|
|
to->di_size = cpu_to_be64(from->di_size);
|
|
to->di_nblocks = cpu_to_be64(from->di_nblocks);
|
|
to->di_extsize = cpu_to_be32(from->di_extsize);
|
|
to->di_nextents = cpu_to_be32(from->di_nextents);
|
|
to->di_anextents = cpu_to_be16(from->di_anextents);
|
|
to->di_forkoff = from->di_forkoff;
|
|
to->di_aformat = from->di_aformat;
|
|
to->di_dmevmask = cpu_to_be32(from->di_dmevmask);
|
|
to->di_dmstate = cpu_to_be16(from->di_dmstate);
|
|
to->di_flags = cpu_to_be16(from->di_flags);
|
|
to->di_gen = cpu_to_be32(from->di_gen);
|
|
|
|
if (from->di_version == 3) {
|
|
to->di_changecount = cpu_to_be64(from->di_changecount);
|
|
to->di_crtime = xfs_log_dinode_to_disk_ts(from,
|
|
from->di_crtime);
|
|
to->di_flags2 = cpu_to_be64(from->di_flags2);
|
|
to->di_cowextsize = cpu_to_be32(from->di_cowextsize);
|
|
to->di_ino = cpu_to_be64(from->di_ino);
|
|
to->di_lsn = cpu_to_be64(from->di_lsn);
|
|
memcpy(to->di_pad2, from->di_pad2, sizeof(to->di_pad2));
|
|
uuid_copy(&to->di_uuid, &from->di_uuid);
|
|
to->di_flushiter = 0;
|
|
} else {
|
|
to->di_flushiter = cpu_to_be16(from->di_flushiter);
|
|
}
|
|
}
|
|
|
|
STATIC int
|
|
xlog_recover_inode_commit_pass2(
|
|
struct xlog *log,
|
|
struct list_head *buffer_list,
|
|
struct xlog_recover_item *item,
|
|
xfs_lsn_t current_lsn)
|
|
{
|
|
struct xfs_inode_log_format *in_f;
|
|
struct xfs_mount *mp = log->l_mp;
|
|
struct xfs_buf *bp;
|
|
struct xfs_dinode *dip;
|
|
int len;
|
|
char *src;
|
|
char *dest;
|
|
int error;
|
|
int attr_index;
|
|
uint fields;
|
|
struct xfs_log_dinode *ldip;
|
|
uint isize;
|
|
int need_free = 0;
|
|
|
|
if (item->ri_buf[0].i_len == sizeof(struct xfs_inode_log_format)) {
|
|
in_f = item->ri_buf[0].i_addr;
|
|
} else {
|
|
in_f = kmem_alloc(sizeof(struct xfs_inode_log_format), 0);
|
|
need_free = 1;
|
|
error = xfs_inode_item_format_convert(&item->ri_buf[0], in_f);
|
|
if (error)
|
|
goto error;
|
|
}
|
|
|
|
/*
|
|
* Inode buffers can be freed, look out for it,
|
|
* and do not replay the inode.
|
|
*/
|
|
if (xlog_is_buffer_cancelled(log, in_f->ilf_blkno, in_f->ilf_len)) {
|
|
error = 0;
|
|
trace_xfs_log_recover_inode_cancel(log, in_f);
|
|
goto error;
|
|
}
|
|
trace_xfs_log_recover_inode_recover(log, in_f);
|
|
|
|
error = xfs_buf_read(mp->m_ddev_targp, in_f->ilf_blkno, in_f->ilf_len,
|
|
0, &bp, &xfs_inode_buf_ops);
|
|
if (error)
|
|
goto error;
|
|
ASSERT(in_f->ilf_fields & XFS_ILOG_CORE);
|
|
dip = xfs_buf_offset(bp, in_f->ilf_boffset);
|
|
|
|
/*
|
|
* Make sure the place we're flushing out to really looks
|
|
* like an inode!
|
|
*/
|
|
if (XFS_IS_CORRUPT(mp, !xfs_verify_magic16(bp, dip->di_magic))) {
|
|
xfs_alert(mp,
|
|
"%s: Bad inode magic number, dip = "PTR_FMT", dino bp = "PTR_FMT", ino = %Ld",
|
|
__func__, dip, bp, in_f->ilf_ino);
|
|
error = -EFSCORRUPTED;
|
|
goto out_release;
|
|
}
|
|
ldip = item->ri_buf[1].i_addr;
|
|
if (XFS_IS_CORRUPT(mp, ldip->di_magic != XFS_DINODE_MAGIC)) {
|
|
xfs_alert(mp,
|
|
"%s: Bad inode log record, rec ptr "PTR_FMT", ino %Ld",
|
|
__func__, item, in_f->ilf_ino);
|
|
error = -EFSCORRUPTED;
|
|
goto out_release;
|
|
}
|
|
|
|
/*
|
|
* If the inode has an LSN in it, recover the inode only if it's less
|
|
* than the lsn of the transaction we are replaying. Note: we still
|
|
* need to replay an owner change even though the inode is more recent
|
|
* than the transaction as there is no guarantee that all the btree
|
|
* blocks are more recent than this transaction, too.
|
|
*/
|
|
if (dip->di_version >= 3) {
|
|
xfs_lsn_t lsn = be64_to_cpu(dip->di_lsn);
|
|
|
|
if (lsn && lsn != -1 && XFS_LSN_CMP(lsn, current_lsn) >= 0) {
|
|
trace_xfs_log_recover_inode_skip(log, in_f);
|
|
error = 0;
|
|
goto out_owner_change;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* di_flushiter is only valid for v1/2 inodes. All changes for v3 inodes
|
|
* are transactional and if ordering is necessary we can determine that
|
|
* more accurately by the LSN field in the V3 inode core. Don't trust
|
|
* the inode versions we might be changing them here - use the
|
|
* superblock flag to determine whether we need to look at di_flushiter
|
|
* to skip replay when the on disk inode is newer than the log one
|
|
*/
|
|
if (!xfs_sb_version_has_v3inode(&mp->m_sb) &&
|
|
ldip->di_flushiter < be16_to_cpu(dip->di_flushiter)) {
|
|
/*
|
|
* Deal with the wrap case, DI_MAX_FLUSH is less
|
|
* than smaller numbers
|
|
*/
|
|
if (be16_to_cpu(dip->di_flushiter) == DI_MAX_FLUSH &&
|
|
ldip->di_flushiter < (DI_MAX_FLUSH >> 1)) {
|
|
/* do nothing */
|
|
} else {
|
|
trace_xfs_log_recover_inode_skip(log, in_f);
|
|
error = 0;
|
|
goto out_release;
|
|
}
|
|
}
|
|
|
|
/* Take the opportunity to reset the flush iteration count */
|
|
ldip->di_flushiter = 0;
|
|
|
|
if (unlikely(S_ISREG(ldip->di_mode))) {
|
|
if ((ldip->di_format != XFS_DINODE_FMT_EXTENTS) &&
|
|
(ldip->di_format != XFS_DINODE_FMT_BTREE)) {
|
|
XFS_CORRUPTION_ERROR("xlog_recover_inode_pass2(3)",
|
|
XFS_ERRLEVEL_LOW, mp, ldip,
|
|
sizeof(*ldip));
|
|
xfs_alert(mp,
|
|
"%s: Bad regular inode log record, rec ptr "PTR_FMT", "
|
|
"ino ptr = "PTR_FMT", ino bp = "PTR_FMT", ino %Ld",
|
|
__func__, item, dip, bp, in_f->ilf_ino);
|
|
error = -EFSCORRUPTED;
|
|
goto out_release;
|
|
}
|
|
} else if (unlikely(S_ISDIR(ldip->di_mode))) {
|
|
if ((ldip->di_format != XFS_DINODE_FMT_EXTENTS) &&
|
|
(ldip->di_format != XFS_DINODE_FMT_BTREE) &&
|
|
(ldip->di_format != XFS_DINODE_FMT_LOCAL)) {
|
|
XFS_CORRUPTION_ERROR("xlog_recover_inode_pass2(4)",
|
|
XFS_ERRLEVEL_LOW, mp, ldip,
|
|
sizeof(*ldip));
|
|
xfs_alert(mp,
|
|
"%s: Bad dir inode log record, rec ptr "PTR_FMT", "
|
|
"ino ptr = "PTR_FMT", ino bp = "PTR_FMT", ino %Ld",
|
|
__func__, item, dip, bp, in_f->ilf_ino);
|
|
error = -EFSCORRUPTED;
|
|
goto out_release;
|
|
}
|
|
}
|
|
if (unlikely(ldip->di_nextents + ldip->di_anextents > ldip->di_nblocks)){
|
|
XFS_CORRUPTION_ERROR("xlog_recover_inode_pass2(5)",
|
|
XFS_ERRLEVEL_LOW, mp, ldip,
|
|
sizeof(*ldip));
|
|
xfs_alert(mp,
|
|
"%s: Bad inode log record, rec ptr "PTR_FMT", dino ptr "PTR_FMT", "
|
|
"dino bp "PTR_FMT", ino %Ld, total extents = %d, nblocks = %Ld",
|
|
__func__, item, dip, bp, in_f->ilf_ino,
|
|
ldip->di_nextents + ldip->di_anextents,
|
|
ldip->di_nblocks);
|
|
error = -EFSCORRUPTED;
|
|
goto out_release;
|
|
}
|
|
if (unlikely(ldip->di_forkoff > mp->m_sb.sb_inodesize)) {
|
|
XFS_CORRUPTION_ERROR("xlog_recover_inode_pass2(6)",
|
|
XFS_ERRLEVEL_LOW, mp, ldip,
|
|
sizeof(*ldip));
|
|
xfs_alert(mp,
|
|
"%s: Bad inode log record, rec ptr "PTR_FMT", dino ptr "PTR_FMT", "
|
|
"dino bp "PTR_FMT", ino %Ld, forkoff 0x%x", __func__,
|
|
item, dip, bp, in_f->ilf_ino, ldip->di_forkoff);
|
|
error = -EFSCORRUPTED;
|
|
goto out_release;
|
|
}
|
|
isize = xfs_log_dinode_size(mp);
|
|
if (unlikely(item->ri_buf[1].i_len > isize)) {
|
|
XFS_CORRUPTION_ERROR("xlog_recover_inode_pass2(7)",
|
|
XFS_ERRLEVEL_LOW, mp, ldip,
|
|
sizeof(*ldip));
|
|
xfs_alert(mp,
|
|
"%s: Bad inode log record length %d, rec ptr "PTR_FMT,
|
|
__func__, item->ri_buf[1].i_len, item);
|
|
error = -EFSCORRUPTED;
|
|
goto out_release;
|
|
}
|
|
|
|
/* recover the log dinode inode into the on disk inode */
|
|
xfs_log_dinode_to_disk(ldip, dip);
|
|
|
|
fields = in_f->ilf_fields;
|
|
if (fields & XFS_ILOG_DEV)
|
|
xfs_dinode_put_rdev(dip, in_f->ilf_u.ilfu_rdev);
|
|
|
|
if (in_f->ilf_size == 2)
|
|
goto out_owner_change;
|
|
len = item->ri_buf[2].i_len;
|
|
src = item->ri_buf[2].i_addr;
|
|
ASSERT(in_f->ilf_size <= 4);
|
|
ASSERT((in_f->ilf_size == 3) || (fields & XFS_ILOG_AFORK));
|
|
ASSERT(!(fields & XFS_ILOG_DFORK) ||
|
|
(len == in_f->ilf_dsize));
|
|
|
|
switch (fields & XFS_ILOG_DFORK) {
|
|
case XFS_ILOG_DDATA:
|
|
case XFS_ILOG_DEXT:
|
|
memcpy(XFS_DFORK_DPTR(dip), src, len);
|
|
break;
|
|
|
|
case XFS_ILOG_DBROOT:
|
|
xfs_bmbt_to_bmdr(mp, (struct xfs_btree_block *)src, len,
|
|
(struct xfs_bmdr_block *)XFS_DFORK_DPTR(dip),
|
|
XFS_DFORK_DSIZE(dip, mp));
|
|
break;
|
|
|
|
default:
|
|
/*
|
|
* There are no data fork flags set.
|
|
*/
|
|
ASSERT((fields & XFS_ILOG_DFORK) == 0);
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* If we logged any attribute data, recover it. There may or
|
|
* may not have been any other non-core data logged in this
|
|
* transaction.
|
|
*/
|
|
if (in_f->ilf_fields & XFS_ILOG_AFORK) {
|
|
if (in_f->ilf_fields & XFS_ILOG_DFORK) {
|
|
attr_index = 3;
|
|
} else {
|
|
attr_index = 2;
|
|
}
|
|
len = item->ri_buf[attr_index].i_len;
|
|
src = item->ri_buf[attr_index].i_addr;
|
|
ASSERT(len == in_f->ilf_asize);
|
|
|
|
switch (in_f->ilf_fields & XFS_ILOG_AFORK) {
|
|
case XFS_ILOG_ADATA:
|
|
case XFS_ILOG_AEXT:
|
|
dest = XFS_DFORK_APTR(dip);
|
|
ASSERT(len <= XFS_DFORK_ASIZE(dip, mp));
|
|
memcpy(dest, src, len);
|
|
break;
|
|
|
|
case XFS_ILOG_ABROOT:
|
|
dest = XFS_DFORK_APTR(dip);
|
|
xfs_bmbt_to_bmdr(mp, (struct xfs_btree_block *)src,
|
|
len, (struct xfs_bmdr_block *)dest,
|
|
XFS_DFORK_ASIZE(dip, mp));
|
|
break;
|
|
|
|
default:
|
|
xfs_warn(log->l_mp, "%s: Invalid flag", __func__);
|
|
ASSERT(0);
|
|
error = -EFSCORRUPTED;
|
|
goto out_release;
|
|
}
|
|
}
|
|
|
|
out_owner_change:
|
|
/* Recover the swapext owner change unless inode has been deleted */
|
|
if ((in_f->ilf_fields & (XFS_ILOG_DOWNER|XFS_ILOG_AOWNER)) &&
|
|
(dip->di_mode != 0))
|
|
error = xfs_recover_inode_owner_change(mp, dip, in_f,
|
|
buffer_list);
|
|
/* re-generate the checksum. */
|
|
xfs_dinode_calc_crc(log->l_mp, dip);
|
|
|
|
ASSERT(bp->b_mount == mp);
|
|
bp->b_flags |= _XBF_LOGRECOVERY;
|
|
xfs_buf_delwri_queue(bp, buffer_list);
|
|
|
|
out_release:
|
|
xfs_buf_relse(bp);
|
|
error:
|
|
if (need_free)
|
|
kmem_free(in_f);
|
|
return error;
|
|
}
|
|
|
|
const struct xlog_recover_item_ops xlog_inode_item_ops = {
|
|
.item_type = XFS_LI_INODE,
|
|
.ra_pass2 = xlog_recover_inode_ra_pass2,
|
|
.commit_pass2 = xlog_recover_inode_commit_pass2,
|
|
};
|