blob: ca0dd46c0ae5c6dea2d4f335a95132f58b9948bd [file] [log] [blame]
// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (C) 2022 Oracle. All Rights Reserved.
* Author: Allison Henderson <allison.henderson@oracle.com>
*/
#include "xfs.h"
#include "xfs_fs.h"
#include "xfs_format.h"
#include "xfs_trans_resv.h"
#include "xfs_shared.h"
#include "xfs_mount.h"
#include "xfs_defer.h"
#include "xfs_log_format.h"
#include "xfs_trans.h"
#include "xfs_bmap_btree.h"
#include "xfs_trans_priv.h"
#include "xfs_log.h"
#include "xfs_inode.h"
#include "xfs_da_format.h"
#include "xfs_da_btree.h"
#include "xfs_attr.h"
#include "xfs_attr_item.h"
#include "xfs_trace.h"
#include "xfs_inode.h"
#include "xfs_trans_space.h"
#include "xfs_errortag.h"
#include "xfs_error.h"
#include "xfs_log_priv.h"
#include "xfs_log_recover.h"
struct kmem_cache *xfs_attri_cache;
struct kmem_cache *xfs_attrd_cache;
static const struct xfs_item_ops xfs_attri_item_ops;
static const struct xfs_item_ops xfs_attrd_item_ops;
static struct xfs_attrd_log_item *xfs_trans_get_attrd(struct xfs_trans *tp,
struct xfs_attri_log_item *attrip);
static inline struct xfs_attri_log_item *ATTRI_ITEM(struct xfs_log_item *lip)
{
return container_of(lip, struct xfs_attri_log_item, attri_item);
}
STATIC void
xfs_attri_item_free(
struct xfs_attri_log_item *attrip)
{
kmem_free(attrip->attri_item.li_lv_shadow);
kvfree(attrip);
}
/*
* Freeing the attrip requires that we remove it from the AIL if it has already
* been placed there. However, the ATTRI may not yet have been placed in the
* AIL when called by xfs_attri_release() from ATTRD processing due to the
* ordering of committed vs unpin operations in bulk insert operations. Hence
* the reference count to ensure only the last caller frees the ATTRI.
*/
STATIC void
xfs_attri_release(
struct xfs_attri_log_item *attrip)
{
ASSERT(atomic_read(&attrip->attri_refcount) > 0);
if (!atomic_dec_and_test(&attrip->attri_refcount))
return;
xfs_trans_ail_delete(&attrip->attri_item, 0);
xfs_attri_item_free(attrip);
}
STATIC void
xfs_attri_item_size(
struct xfs_log_item *lip,
int *nvecs,
int *nbytes)
{
struct xfs_attri_log_item *attrip = ATTRI_ITEM(lip);
*nvecs += 2;
*nbytes += sizeof(struct xfs_attri_log_format) +
xlog_calc_iovec_len(attrip->attri_name_len);
if (!attrip->attri_value_len)
return;
*nvecs += 1;
*nbytes += xlog_calc_iovec_len(attrip->attri_value_len);
}
/*
* This is called to fill in the log iovecs for the given attri log
* item. We use 1 iovec for the attri_format_item, 1 for the name, and
* another for the value if it is present
*/
STATIC void
xfs_attri_item_format(
struct xfs_log_item *lip,
struct xfs_log_vec *lv)
{
struct xfs_attri_log_item *attrip = ATTRI_ITEM(lip);
struct xfs_log_iovec *vecp = NULL;
attrip->attri_format.alfi_type = XFS_LI_ATTRI;
attrip->attri_format.alfi_size = 1;
/*
* This size accounting must be done before copying the attrip into the
* iovec. If we do it after, the wrong size will be recorded to the log
* and we trip across assertion checks for bad region sizes later during
* the log recovery.
*/
ASSERT(attrip->attri_name_len > 0);
attrip->attri_format.alfi_size++;
if (attrip->attri_value_len > 0)
attrip->attri_format.alfi_size++;
xlog_copy_iovec(lv, &vecp, XLOG_REG_TYPE_ATTRI_FORMAT,
&attrip->attri_format,
sizeof(struct xfs_attri_log_format));
xlog_copy_iovec(lv, &vecp, XLOG_REG_TYPE_ATTR_NAME,
attrip->attri_name,
attrip->attri_name_len);
if (attrip->attri_value_len > 0)
xlog_copy_iovec(lv, &vecp, XLOG_REG_TYPE_ATTR_VALUE,
attrip->attri_value,
attrip->attri_value_len);
}
/*
* The unpin operation is the last place an ATTRI is manipulated in the log. It
* is either inserted in the AIL or aborted in the event of a log I/O error. In
* either case, the ATTRI transaction has been successfully committed to make
* it this far. Therefore, we expect whoever committed the ATTRI to either
* construct and commit the ATTRD or drop the ATTRD's reference in the event of
* error. Simply drop the log's ATTRI reference now that the log is done with
* it.
*/
STATIC void
xfs_attri_item_unpin(
struct xfs_log_item *lip,
int remove)
{
xfs_attri_release(ATTRI_ITEM(lip));
}
STATIC void
xfs_attri_item_release(
struct xfs_log_item *lip)
{
xfs_attri_release(ATTRI_ITEM(lip));
}
/*
* Allocate and initialize an attri item. Caller may allocate an additional
* trailing buffer for name and value
*/
STATIC struct xfs_attri_log_item *
xfs_attri_init(
struct xfs_mount *mp,
uint32_t name_len,
uint32_t value_len)
{
struct xfs_attri_log_item *attrip;
uint32_t buffer_size = name_len + value_len;
if (buffer_size) {
/*
* This could be over 64kB in length, so we have to use
* kvmalloc() for this. But kvmalloc() utterly sucks, so we
* use own version.
*/
attrip = xlog_kvmalloc(sizeof(struct xfs_attri_log_item) +
buffer_size);
} else {
attrip = kmem_cache_alloc(xfs_attri_cache,
GFP_NOFS | __GFP_NOFAIL);
}
memset(attrip, 0, sizeof(struct xfs_attri_log_item));
attrip->attri_name_len = name_len;
if (name_len)
attrip->attri_name = ((char *)attrip) +
sizeof(struct xfs_attri_log_item);
else
attrip->attri_name = NULL;
attrip->attri_value_len = value_len;
if (value_len)
attrip->attri_value = ((char *)attrip) +
sizeof(struct xfs_attri_log_item) +
name_len;
else
attrip->attri_value = NULL;
xfs_log_item_init(mp, &attrip->attri_item, XFS_LI_ATTRI,
&xfs_attri_item_ops);
attrip->attri_format.alfi_id = (uintptr_t)(void *)attrip;
atomic_set(&attrip->attri_refcount, 2);
return attrip;
}
/*
* Copy an attr format buffer from the given buf, and into the destination attr
* format structure.
*/
STATIC int
xfs_attri_copy_format(
struct xfs_log_iovec *buf,
struct xfs_attri_log_format *dst_attr_fmt)
{
struct xfs_attri_log_format *src_attr_fmt = buf->i_addr;
size_t len;
len = sizeof(struct xfs_attri_log_format);
if (buf->i_len != len) {
XFS_ERROR_REPORT(__func__, XFS_ERRLEVEL_LOW, NULL);
return -EFSCORRUPTED;
}
memcpy((char *)dst_attr_fmt, (char *)src_attr_fmt, len);
return 0;
}
static inline struct xfs_attrd_log_item *ATTRD_ITEM(struct xfs_log_item *lip)
{
return container_of(lip, struct xfs_attrd_log_item, attrd_item);
}
STATIC void
xfs_attrd_item_free(struct xfs_attrd_log_item *attrdp)
{
kmem_free(attrdp->attrd_item.li_lv_shadow);
kmem_cache_free(xfs_attrd_cache, attrdp);
}
STATIC void
xfs_attrd_item_size(
struct xfs_log_item *lip,
int *nvecs,
int *nbytes)
{
*nvecs += 1;
*nbytes += sizeof(struct xfs_attrd_log_format);
}
/*
* This is called to fill in the log iovecs for the given attrd log item. We use
* only 1 iovec for the attrd_format, and we point that at the attr_log_format
* structure embedded in the attrd item.
*/
STATIC void
xfs_attrd_item_format(
struct xfs_log_item *lip,
struct xfs_log_vec *lv)
{
struct xfs_attrd_log_item *attrdp = ATTRD_ITEM(lip);
struct xfs_log_iovec *vecp = NULL;
attrdp->attrd_format.alfd_type = XFS_LI_ATTRD;
attrdp->attrd_format.alfd_size = 1;
xlog_copy_iovec(lv, &vecp, XLOG_REG_TYPE_ATTRD_FORMAT,
&attrdp->attrd_format,
sizeof(struct xfs_attrd_log_format));
}
/*
* The ATTRD is either committed or aborted if the transaction is canceled. If
* the transaction is canceled, drop our reference to the ATTRI and free the
* ATTRD.
*/
STATIC void
xfs_attrd_item_release(
struct xfs_log_item *lip)
{
struct xfs_attrd_log_item *attrdp = ATTRD_ITEM(lip);
xfs_attri_release(attrdp->attrd_attrip);
xfs_attrd_item_free(attrdp);
}
static struct xfs_log_item *
xfs_attrd_item_intent(
struct xfs_log_item *lip)
{
return &ATTRD_ITEM(lip)->attrd_attrip->attri_item;
}
/*
* Performs one step of an attribute update intent and marks the attrd item
* dirty.. An attr operation may be a set or a remove. Note that the
* transaction is marked dirty regardless of whether the operation succeeds or
* fails to support the ATTRI/ATTRD lifecycle rules.
*/
STATIC int
xfs_xattri_finish_update(
struct xfs_attr_item *attr,
struct xfs_attrd_log_item *attrdp)
{
struct xfs_da_args *args = attr->xattri_da_args;
int error;
if (XFS_TEST_ERROR(false, args->dp->i_mount, XFS_ERRTAG_LARP)) {
error = -EIO;
goto out;
}
error = xfs_attr_set_iter(attr);
if (!error && attr->xattri_dela_state != XFS_DAS_DONE)
error = -EAGAIN;
out:
/*
* Mark the transaction dirty, even on error. This ensures the
* transaction is aborted, which:
*
* 1.) releases the ATTRI and frees the ATTRD
* 2.) shuts down the filesystem
*/
args->trans->t_flags |= XFS_TRANS_DIRTY | XFS_TRANS_HAS_INTENT_DONE;
/*
* attr intent/done items are null when logged attributes are disabled
*/
if (attrdp)
set_bit(XFS_LI_DIRTY, &attrdp->attrd_item.li_flags);
return error;
}
/* Log an attr to the intent item. */
STATIC void
xfs_attr_log_item(
struct xfs_trans *tp,
struct xfs_attri_log_item *attrip,
struct xfs_attr_item *attr)
{
struct xfs_attri_log_format *attrp;
tp->t_flags |= XFS_TRANS_DIRTY;
set_bit(XFS_LI_DIRTY, &attrip->attri_item.li_flags);
/*
* At this point the xfs_attr_item has been constructed, and we've
* created the log intent. Fill in the attri log item and log format
* structure with fields from this xfs_attr_item
*/
attrp = &attrip->attri_format;
attrp->alfi_ino = attr->xattri_da_args->dp->i_ino;
ASSERT(!(attr->xattri_op_flags & ~XFS_ATTRI_OP_FLAGS_TYPE_MASK));
attrp->alfi_op_flags = attr->xattri_op_flags;
attrp->alfi_value_len = attr->xattri_da_args->valuelen;
attrp->alfi_name_len = attr->xattri_da_args->namelen;
ASSERT(!(attr->xattri_da_args->attr_filter & ~XFS_ATTRI_FILTER_MASK));
attrp->alfi_attr_filter = attr->xattri_da_args->attr_filter;
memcpy(attrip->attri_name, attr->xattri_da_args->name,
attr->xattri_da_args->namelen);
memcpy(attrip->attri_value, attr->xattri_da_args->value,
attr->xattri_da_args->valuelen);
attrip->attri_name_len = attr->xattri_da_args->namelen;
attrip->attri_value_len = attr->xattri_da_args->valuelen;
}
/* Get an ATTRI. */
static struct xfs_log_item *
xfs_attr_create_intent(
struct xfs_trans *tp,
struct list_head *items,
unsigned int count,
bool sort)
{
struct xfs_mount *mp = tp->t_mountp;
struct xfs_attri_log_item *attrip;
struct xfs_attr_item *attr;
ASSERT(count == 1);
if (!xfs_sb_version_haslogxattrs(&mp->m_sb))
return NULL;
/*
* Each attr item only performs one attribute operation at a time, so
* this is a list of one
*/
list_for_each_entry(attr, items, xattri_list) {
attrip = xfs_attri_init(mp, attr->xattri_da_args->namelen,
attr->xattri_da_args->valuelen);
if (attrip == NULL)
return NULL;
xfs_trans_add_item(tp, &attrip->attri_item);
xfs_attr_log_item(tp, attrip, attr);
}
return &attrip->attri_item;
}
static inline void
xfs_attr_free_item(
struct xfs_attr_item *attr)
{
if (attr->xattri_da_state)
xfs_da_state_free(attr->xattri_da_state);
if (attr->xattri_da_args->op_flags & XFS_DA_OP_RECOVERY)
kmem_free(attr);
else
kmem_cache_free(xfs_attr_intent_cache, attr);
}
/* Process an attr. */
STATIC int
xfs_attr_finish_item(
struct xfs_trans *tp,
struct xfs_log_item *done,
struct list_head *item,
struct xfs_btree_cur **state)
{
struct xfs_attr_item *attr;
struct xfs_attrd_log_item *done_item = NULL;
int error;
attr = container_of(item, struct xfs_attr_item, xattri_list);
if (done)
done_item = ATTRD_ITEM(done);
/*
* Always reset trans after EAGAIN cycle
* since the transaction is new
*/
attr->xattri_da_args->trans = tp;
error = xfs_xattri_finish_update(attr, done_item);
if (error != -EAGAIN)
xfs_attr_free_item(attr);
return error;
}
/* Abort all pending ATTRs. */
STATIC void
xfs_attr_abort_intent(
struct xfs_log_item *intent)
{
xfs_attri_release(ATTRI_ITEM(intent));
}
/* Cancel an attr */
STATIC void
xfs_attr_cancel_item(
struct list_head *item)
{
struct xfs_attr_item *attr;
attr = container_of(item, struct xfs_attr_item, xattri_list);
xfs_attr_free_item(attr);
}
STATIC xfs_lsn_t
xfs_attri_item_committed(
struct xfs_log_item *lip,
xfs_lsn_t lsn)
{
struct xfs_attri_log_item *attrip = ATTRI_ITEM(lip);
/*
* The attrip refers to xfs_attr_item memory to log the name and value
* with the intent item. This already occurred when the intent was
* committed so these fields are no longer accessed. Clear them out of
* caution since we're about to free the xfs_attr_item.
*/
attrip->attri_name = NULL;
attrip->attri_value = NULL;
/*
* The ATTRI is logged only once and cannot be moved in the log, so
* simply return the lsn at which it's been logged.
*/
return lsn;
}
STATIC bool
xfs_attri_item_match(
struct xfs_log_item *lip,
uint64_t intent_id)
{
return ATTRI_ITEM(lip)->attri_format.alfi_id == intent_id;
}
/* Is this recovered ATTRI format ok? */
static inline bool
xfs_attri_validate(
struct xfs_mount *mp,
struct xfs_attri_log_format *attrp)
{
unsigned int op = attrp->alfi_op_flags &
XFS_ATTRI_OP_FLAGS_TYPE_MASK;
if (attrp->__pad != 0)
return false;
if (attrp->alfi_op_flags & ~XFS_ATTRI_OP_FLAGS_TYPE_MASK)
return false;
if (attrp->alfi_attr_filter & ~XFS_ATTRI_FILTER_MASK)
return false;
/* alfi_op_flags should be either a set or remove */
switch (op) {
case XFS_ATTRI_OP_FLAGS_SET:
case XFS_ATTRI_OP_FLAGS_REPLACE:
case XFS_ATTRI_OP_FLAGS_REMOVE:
break;
default:
return false;
}
if (attrp->alfi_value_len > XATTR_SIZE_MAX)
return false;
if ((attrp->alfi_name_len > XATTR_NAME_MAX) ||
(attrp->alfi_name_len == 0))
return false;
return xfs_verify_ino(mp, attrp->alfi_ino);
}
/*
* Process an attr intent item that was recovered from the log. We need to
* delete the attr that it describes.
*/
STATIC int
xfs_attri_item_recover(
struct xfs_log_item *lip,
struct list_head *capture_list)
{
struct xfs_attri_log_item *attrip = ATTRI_ITEM(lip);
struct xfs_attr_item *attr;
struct xfs_mount *mp = lip->li_log->l_mp;
struct xfs_inode *ip;
struct xfs_da_args *args;
struct xfs_trans *tp;
struct xfs_trans_res tres;
struct xfs_attri_log_format *attrp;
int error, ret = 0;
int total;
int local;
struct xfs_attrd_log_item *done_item = NULL;
/*
* First check the validity of the attr described by the ATTRI. If any
* are bad, then assume that all are bad and just toss the ATTRI.
*/
attrp = &attrip->attri_format;
if (!xfs_attri_validate(mp, attrp) ||
!xfs_attr_namecheck(attrip->attri_name, attrip->attri_name_len))
return -EFSCORRUPTED;
error = xlog_recover_iget(mp, attrp->alfi_ino, &ip);
if (error)
return error;
attr = kmem_zalloc(sizeof(struct xfs_attr_item) +
sizeof(struct xfs_da_args), KM_NOFS);
args = (struct xfs_da_args *)(attr + 1);
attr->xattri_da_args = args;
attr->xattri_op_flags = attrp->alfi_op_flags &
XFS_ATTRI_OP_FLAGS_TYPE_MASK;
args->dp = ip;
args->geo = mp->m_attr_geo;
args->whichfork = XFS_ATTR_FORK;
args->name = attrip->attri_name;
args->namelen = attrp->alfi_name_len;
args->hashval = xfs_da_hashname(args->name, args->namelen);
args->attr_filter = attrp->alfi_attr_filter & XFS_ATTRI_FILTER_MASK;
args->op_flags = XFS_DA_OP_RECOVERY | XFS_DA_OP_OKNOENT;
switch (attr->xattri_op_flags) {
case XFS_ATTRI_OP_FLAGS_SET:
case XFS_ATTRI_OP_FLAGS_REPLACE:
args->value = attrip->attri_value;
args->valuelen = attrp->alfi_value_len;
args->total = xfs_attr_calc_size(args, &local);
if (xfs_inode_hasattr(args->dp))
attr->xattri_dela_state = xfs_attr_init_replace_state(args);
else
attr->xattri_dela_state = xfs_attr_init_add_state(args);
break;
case XFS_ATTRI_OP_FLAGS_REMOVE:
if (!xfs_inode_hasattr(args->dp))
goto out;
attr->xattri_dela_state = xfs_attr_init_remove_state(args);
break;
default:
ASSERT(0);
error = -EFSCORRUPTED;
goto out;
}
xfs_init_attr_trans(args, &tres, &total);
error = xfs_trans_alloc(mp, &tres, total, 0, XFS_TRANS_RESERVE, &tp);
if (error)
goto out;
args->trans = tp;
done_item = xfs_trans_get_attrd(tp, attrip);
xfs_ilock(ip, XFS_ILOCK_EXCL);
xfs_trans_ijoin(tp, ip, 0);
ret = xfs_xattri_finish_update(attr, done_item);
if (ret == -EAGAIN) {
/* There's more work to do, so add it to this transaction */
xfs_defer_add(tp, XFS_DEFER_OPS_TYPE_ATTR, &attr->xattri_list);
} else
error = ret;
if (error) {
xfs_trans_cancel(tp);
goto out_unlock;
}
error = xfs_defer_ops_capture_and_commit(tp, capture_list);
out_unlock:
if (attr->xattri_leaf_bp)
xfs_buf_relse(attr->xattri_leaf_bp);
xfs_iunlock(ip, XFS_ILOCK_EXCL);
xfs_irele(ip);
out:
if (ret != -EAGAIN)
xfs_attr_free_item(attr);
return error;
}
/* Re-log an intent item to push the log tail forward. */
static struct xfs_log_item *
xfs_attri_item_relog(
struct xfs_log_item *intent,
struct xfs_trans *tp)
{
struct xfs_attrd_log_item *attrdp;
struct xfs_attri_log_item *old_attrip;
struct xfs_attri_log_item *new_attrip;
struct xfs_attri_log_format *new_attrp;
struct xfs_attri_log_format *old_attrp;
old_attrip = ATTRI_ITEM(intent);
old_attrp = &old_attrip->attri_format;
tp->t_flags |= XFS_TRANS_DIRTY;
attrdp = xfs_trans_get_attrd(tp, old_attrip);
set_bit(XFS_LI_DIRTY, &attrdp->attrd_item.li_flags);
new_attrip = xfs_attri_init(tp->t_mountp, old_attrp->alfi_name_len,
old_attrp->alfi_value_len);
new_attrp = &new_attrip->attri_format;
new_attrp->alfi_ino = old_attrp->alfi_ino;
new_attrp->alfi_op_flags = old_attrp->alfi_op_flags;
new_attrp->alfi_value_len = old_attrp->alfi_value_len;
new_attrp->alfi_name_len = old_attrp->alfi_name_len;
new_attrp->alfi_attr_filter = old_attrp->alfi_attr_filter;
memcpy(new_attrip->attri_name, old_attrip->attri_name,
new_attrip->attri_name_len);
if (new_attrip->attri_value_len > 0)
memcpy(new_attrip->attri_value, old_attrip->attri_value,
new_attrip->attri_value_len);
xfs_trans_add_item(tp, &new_attrip->attri_item);
set_bit(XFS_LI_DIRTY, &new_attrip->attri_item.li_flags);
return &new_attrip->attri_item;
}
STATIC int
xlog_recover_attri_commit_pass2(
struct xlog *log,
struct list_head *buffer_list,
struct xlog_recover_item *item,
xfs_lsn_t lsn)
{
int error;
struct xfs_mount *mp = log->l_mp;
struct xfs_attri_log_item *attrip;
struct xfs_attri_log_format *attri_formatp;
const void *attr_name;
int region = 0;
attri_formatp = item->ri_buf[region].i_addr;
attr_name = item->ri_buf[1].i_addr;
/* Validate xfs_attri_log_format before the large memory allocation */
if (!xfs_attri_validate(mp, attri_formatp)) {
XFS_ERROR_REPORT(__func__, XFS_ERRLEVEL_LOW, mp);
return -EFSCORRUPTED;
}
if (!xfs_attr_namecheck(attr_name, attri_formatp->alfi_name_len)) {
XFS_ERROR_REPORT(__func__, XFS_ERRLEVEL_LOW, mp);
return -EFSCORRUPTED;
}
/* memory alloc failure will cause replay to abort */
attrip = xfs_attri_init(mp, attri_formatp->alfi_name_len,
attri_formatp->alfi_value_len);
if (attrip == NULL)
return -ENOMEM;
error = xfs_attri_copy_format(&item->ri_buf[region],
&attrip->attri_format);
if (error)
goto out;
region++;
memcpy(attrip->attri_name, item->ri_buf[region].i_addr,
attrip->attri_name_len);
if (attrip->attri_value_len > 0) {
region++;
memcpy(attrip->attri_value, item->ri_buf[region].i_addr,
attrip->attri_value_len);
}
/*
* The ATTRI has two references. One for the ATTRD and one for ATTRI to
* ensure it makes it into the AIL. Insert the ATTRI into the AIL
* directly and drop the ATTRI reference. Note that
* xfs_trans_ail_update() drops the AIL lock.
*/
xfs_trans_ail_insert(log->l_ailp, &attrip->attri_item, lsn);
xfs_attri_release(attrip);
return 0;
out:
xfs_attri_item_free(attrip);
return error;
}
/*
* This routine is called to allocate an "attr free done" log item.
*/
static struct xfs_attrd_log_item *
xfs_trans_get_attrd(struct xfs_trans *tp,
struct xfs_attri_log_item *attrip)
{
struct xfs_attrd_log_item *attrdp;
ASSERT(tp != NULL);
attrdp = kmem_cache_zalloc(xfs_attrd_cache, GFP_NOFS | __GFP_NOFAIL);
xfs_log_item_init(tp->t_mountp, &attrdp->attrd_item, XFS_LI_ATTRD,
&xfs_attrd_item_ops);
attrdp->attrd_attrip = attrip;
attrdp->attrd_format.alfd_alf_id = attrip->attri_format.alfi_id;
xfs_trans_add_item(tp, &attrdp->attrd_item);
return attrdp;
}
/* Get an ATTRD so we can process all the attrs. */
static struct xfs_log_item *
xfs_attr_create_done(
struct xfs_trans *tp,
struct xfs_log_item *intent,
unsigned int count)
{
if (!intent)
return NULL;
return &xfs_trans_get_attrd(tp, ATTRI_ITEM(intent))->attrd_item;
}
const struct xfs_defer_op_type xfs_attr_defer_type = {
.max_items = 1,
.create_intent = xfs_attr_create_intent,
.abort_intent = xfs_attr_abort_intent,
.create_done = xfs_attr_create_done,
.finish_item = xfs_attr_finish_item,
.cancel_item = xfs_attr_cancel_item,
};
/*
* This routine is called when an ATTRD format structure is found in a committed
* transaction in the log. Its purpose is to cancel the corresponding ATTRI if
* it was still in the log. To do this it searches the AIL for the ATTRI with
* an id equal to that in the ATTRD format structure. If we find it we drop
* the ATTRD reference, which removes the ATTRI from the AIL and frees it.
*/
STATIC int
xlog_recover_attrd_commit_pass2(
struct xlog *log,
struct list_head *buffer_list,
struct xlog_recover_item *item,
xfs_lsn_t lsn)
{
struct xfs_attrd_log_format *attrd_formatp;
attrd_formatp = item->ri_buf[0].i_addr;
if (item->ri_buf[0].i_len != sizeof(struct xfs_attrd_log_format)) {
XFS_ERROR_REPORT(__func__, XFS_ERRLEVEL_LOW, NULL);
return -EFSCORRUPTED;
}
xlog_recover_release_intent(log, XFS_LI_ATTRI,
attrd_formatp->alfd_alf_id);
return 0;
}
static const struct xfs_item_ops xfs_attri_item_ops = {
.flags = XFS_ITEM_INTENT,
.iop_size = xfs_attri_item_size,
.iop_format = xfs_attri_item_format,
.iop_unpin = xfs_attri_item_unpin,
.iop_committed = xfs_attri_item_committed,
.iop_release = xfs_attri_item_release,
.iop_recover = xfs_attri_item_recover,
.iop_match = xfs_attri_item_match,
.iop_relog = xfs_attri_item_relog,
};
const struct xlog_recover_item_ops xlog_attri_item_ops = {
.item_type = XFS_LI_ATTRI,
.commit_pass2 = xlog_recover_attri_commit_pass2,
};
static const struct xfs_item_ops xfs_attrd_item_ops = {
.flags = XFS_ITEM_RELEASE_WHEN_COMMITTED |
XFS_ITEM_INTENT_DONE,
.iop_size = xfs_attrd_item_size,
.iop_format = xfs_attrd_item_format,
.iop_release = xfs_attrd_item_release,
.iop_intent = xfs_attrd_item_intent,
};
const struct xlog_recover_item_ops xlog_attrd_item_ops = {
.item_type = XFS_LI_ATTRD,
.commit_pass2 = xlog_recover_attrd_commit_pass2,
};