2022-05-04 05:41:02 +03:00
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// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (C) 2022 Oracle. All Rights Reserved.
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* Author: Allison Henderson <allison.henderson@oracle.com>
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*/
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#include "xfs.h"
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#include "xfs_fs.h"
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#include "xfs_format.h"
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#include "xfs_trans_resv.h"
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#include "xfs_shared.h"
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#include "xfs_mount.h"
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#include "xfs_defer.h"
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#include "xfs_log_format.h"
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#include "xfs_trans.h"
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2022-05-09 12:09:07 +03:00
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#include "xfs_bmap_btree.h"
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2022-05-04 05:41:02 +03:00
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#include "xfs_trans_priv.h"
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#include "xfs_log.h"
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#include "xfs_inode.h"
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#include "xfs_da_format.h"
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#include "xfs_da_btree.h"
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#include "xfs_attr.h"
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#include "xfs_attr_item.h"
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#include "xfs_trace.h"
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#include "xfs_inode.h"
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#include "xfs_trans_space.h"
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2022-05-11 10:01:22 +03:00
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#include "xfs_errortag.h"
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2022-05-04 05:41:02 +03:00
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#include "xfs_error.h"
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#include "xfs_log_priv.h"
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#include "xfs_log_recover.h"
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static const struct xfs_item_ops xfs_attri_item_ops;
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static const struct xfs_item_ops xfs_attrd_item_ops;
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2022-05-09 12:09:07 +03:00
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static struct xfs_attrd_log_item *xfs_trans_get_attrd(struct xfs_trans *tp,
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struct xfs_attri_log_item *attrip);
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2022-05-04 05:41:02 +03:00
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static inline struct xfs_attri_log_item *ATTRI_ITEM(struct xfs_log_item *lip)
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{
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return container_of(lip, struct xfs_attri_log_item, attri_item);
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}
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STATIC void
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xfs_attri_item_free(
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struct xfs_attri_log_item *attrip)
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{
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kmem_free(attrip->attri_item.li_lv_shadow);
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kmem_free(attrip);
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}
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/*
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* Freeing the attrip requires that we remove it from the AIL if it has already
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* been placed there. However, the ATTRI may not yet have been placed in the
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* AIL when called by xfs_attri_release() from ATTRD processing due to the
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* ordering of committed vs unpin operations in bulk insert operations. Hence
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* the reference count to ensure only the last caller frees the ATTRI.
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*/
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STATIC void
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xfs_attri_release(
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struct xfs_attri_log_item *attrip)
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{
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ASSERT(atomic_read(&attrip->attri_refcount) > 0);
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if (!atomic_dec_and_test(&attrip->attri_refcount))
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return;
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xfs_trans_ail_delete(&attrip->attri_item, 0);
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xfs_attri_item_free(attrip);
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}
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STATIC void
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xfs_attri_item_size(
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struct xfs_log_item *lip,
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int *nvecs,
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int *nbytes)
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{
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struct xfs_attri_log_item *attrip = ATTRI_ITEM(lip);
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*nvecs += 2;
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*nbytes += sizeof(struct xfs_attri_log_format) +
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xlog_calc_iovec_len(attrip->attri_name_len);
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if (!attrip->attri_value_len)
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return;
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*nvecs += 1;
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*nbytes += xlog_calc_iovec_len(attrip->attri_value_len);
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}
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/*
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* This is called to fill in the log iovecs for the given attri log
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* item. We use 1 iovec for the attri_format_item, 1 for the name, and
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* another for the value if it is present
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*/
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STATIC void
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xfs_attri_item_format(
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struct xfs_log_item *lip,
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struct xfs_log_vec *lv)
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{
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struct xfs_attri_log_item *attrip = ATTRI_ITEM(lip);
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struct xfs_log_iovec *vecp = NULL;
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attrip->attri_format.alfi_type = XFS_LI_ATTRI;
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attrip->attri_format.alfi_size = 1;
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/*
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* This size accounting must be done before copying the attrip into the
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* iovec. If we do it after, the wrong size will be recorded to the log
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* and we trip across assertion checks for bad region sizes later during
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* the log recovery.
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*/
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ASSERT(attrip->attri_name_len > 0);
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attrip->attri_format.alfi_size++;
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if (attrip->attri_value_len > 0)
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attrip->attri_format.alfi_size++;
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xlog_copy_iovec(lv, &vecp, XLOG_REG_TYPE_ATTRI_FORMAT,
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&attrip->attri_format,
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sizeof(struct xfs_attri_log_format));
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xlog_copy_iovec(lv, &vecp, XLOG_REG_TYPE_ATTR_NAME,
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attrip->attri_name,
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xlog_calc_iovec_len(attrip->attri_name_len));
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if (attrip->attri_value_len > 0)
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xlog_copy_iovec(lv, &vecp, XLOG_REG_TYPE_ATTR_VALUE,
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attrip->attri_value,
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xlog_calc_iovec_len(attrip->attri_value_len));
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}
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/*
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* The unpin operation is the last place an ATTRI is manipulated in the log. It
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* is either inserted in the AIL or aborted in the event of a log I/O error. In
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* either case, the ATTRI transaction has been successfully committed to make
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* it this far. Therefore, we expect whoever committed the ATTRI to either
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* construct and commit the ATTRD or drop the ATTRD's reference in the event of
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* error. Simply drop the log's ATTRI reference now that the log is done with
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* it.
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*/
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STATIC void
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xfs_attri_item_unpin(
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struct xfs_log_item *lip,
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int remove)
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{
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xfs_attri_release(ATTRI_ITEM(lip));
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}
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STATIC void
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xfs_attri_item_release(
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struct xfs_log_item *lip)
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{
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xfs_attri_release(ATTRI_ITEM(lip));
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}
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/*
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* Allocate and initialize an attri item. Caller may allocate an additional
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* trailing buffer for name and value
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*/
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STATIC struct xfs_attri_log_item *
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xfs_attri_init(
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struct xfs_mount *mp,
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uint32_t name_len,
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uint32_t value_len)
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{
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struct xfs_attri_log_item *attrip;
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uint32_t name_vec_len = 0;
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uint32_t value_vec_len = 0;
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uint32_t buffer_size;
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if (name_len)
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name_vec_len = xlog_calc_iovec_len(name_len);
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if (value_len)
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value_vec_len = xlog_calc_iovec_len(value_len);
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buffer_size = name_vec_len + value_vec_len;
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if (buffer_size) {
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attrip = kmem_zalloc(sizeof(struct xfs_attri_log_item) +
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buffer_size, KM_NOFS);
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if (attrip == NULL)
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return NULL;
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} else {
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attrip = kmem_cache_zalloc(xfs_attri_cache,
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GFP_NOFS | __GFP_NOFAIL);
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}
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attrip->attri_name_len = name_len;
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if (name_len)
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attrip->attri_name = ((char *)attrip) +
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sizeof(struct xfs_attri_log_item);
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else
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attrip->attri_name = NULL;
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attrip->attri_value_len = value_len;
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if (value_len)
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attrip->attri_value = ((char *)attrip) +
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sizeof(struct xfs_attri_log_item) +
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name_vec_len;
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else
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attrip->attri_value = NULL;
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xfs_log_item_init(mp, &attrip->attri_item, XFS_LI_ATTRI,
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&xfs_attri_item_ops);
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attrip->attri_format.alfi_id = (uintptr_t)(void *)attrip;
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atomic_set(&attrip->attri_refcount, 2);
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return attrip;
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}
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/*
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* Copy an attr format buffer from the given buf, and into the destination attr
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* format structure.
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*/
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STATIC int
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xfs_attri_copy_format(
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struct xfs_log_iovec *buf,
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struct xfs_attri_log_format *dst_attr_fmt)
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{
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struct xfs_attri_log_format *src_attr_fmt = buf->i_addr;
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size_t len;
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len = sizeof(struct xfs_attri_log_format);
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if (buf->i_len != len) {
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XFS_ERROR_REPORT(__func__, XFS_ERRLEVEL_LOW, NULL);
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return -EFSCORRUPTED;
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}
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memcpy((char *)dst_attr_fmt, (char *)src_attr_fmt, len);
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return 0;
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}
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static inline struct xfs_attrd_log_item *ATTRD_ITEM(struct xfs_log_item *lip)
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{
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return container_of(lip, struct xfs_attrd_log_item, attrd_item);
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}
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STATIC void
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xfs_attrd_item_free(struct xfs_attrd_log_item *attrdp)
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{
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kmem_free(attrdp->attrd_item.li_lv_shadow);
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kmem_free(attrdp);
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}
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STATIC void
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xfs_attrd_item_size(
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struct xfs_log_item *lip,
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int *nvecs,
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int *nbytes)
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{
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*nvecs += 1;
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*nbytes += sizeof(struct xfs_attrd_log_format);
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}
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/*
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* This is called to fill in the log iovecs for the given attrd log item. We use
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* only 1 iovec for the attrd_format, and we point that at the attr_log_format
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* structure embedded in the attrd item.
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*/
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STATIC void
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xfs_attrd_item_format(
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struct xfs_log_item *lip,
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struct xfs_log_vec *lv)
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{
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struct xfs_attrd_log_item *attrdp = ATTRD_ITEM(lip);
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struct xfs_log_iovec *vecp = NULL;
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attrdp->attrd_format.alfd_type = XFS_LI_ATTRD;
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attrdp->attrd_format.alfd_size = 1;
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xlog_copy_iovec(lv, &vecp, XLOG_REG_TYPE_ATTRD_FORMAT,
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&attrdp->attrd_format,
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sizeof(struct xfs_attrd_log_format));
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}
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/*
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* The ATTRD is either committed or aborted if the transaction is canceled. If
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* the transaction is canceled, drop our reference to the ATTRI and free the
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* ATTRD.
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*/
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STATIC void
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xfs_attrd_item_release(
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struct xfs_log_item *lip)
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{
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struct xfs_attrd_log_item *attrdp = ATTRD_ITEM(lip);
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xfs_attri_release(attrdp->attrd_attrip);
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xfs_attrd_item_free(attrdp);
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}
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2022-05-09 12:09:07 +03:00
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static struct xfs_log_item *
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xfs_attrd_item_intent(
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struct xfs_log_item *lip)
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{
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return &ATTRD_ITEM(lip)->attrd_attrip->attri_item;
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}
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/*
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* Performs one step of an attribute update intent and marks the attrd item
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* dirty.. An attr operation may be a set or a remove. Note that the
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* transaction is marked dirty regardless of whether the operation succeeds or
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* fails to support the ATTRI/ATTRD lifecycle rules.
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*/
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STATIC int
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xfs_xattri_finish_update(
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2022-05-11 10:01:22 +03:00
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struct xfs_attr_item *attr,
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2022-05-12 08:12:56 +03:00
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struct xfs_attrd_log_item *attrdp)
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2022-05-09 12:09:07 +03:00
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{
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2022-05-11 10:01:22 +03:00
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struct xfs_da_args *args = attr->xattri_da_args;
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2022-05-09 12:09:07 +03:00
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int error;
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2022-05-11 10:01:22 +03:00
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if (XFS_TEST_ERROR(false, args->dp->i_mount, XFS_ERRTAG_LARP)) {
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error = -EIO;
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goto out;
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}
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2022-05-12 08:12:56 +03:00
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error = xfs_attr_set_iter(attr);
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if (!error && attr->xattri_dela_state != XFS_DAS_DONE)
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error = -EAGAIN;
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2022-05-11 10:01:22 +03:00
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out:
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2022-05-09 12:09:07 +03:00
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/*
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* Mark the transaction dirty, even on error. This ensures the
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* transaction is aborted, which:
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*
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* 1.) releases the ATTRI and frees the ATTRD
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* 2.) shuts down the filesystem
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*/
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args->trans->t_flags |= XFS_TRANS_DIRTY | XFS_TRANS_HAS_INTENT_DONE;
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/*
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* attr intent/done items are null when logged attributes are disabled
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*/
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if (attrdp)
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set_bit(XFS_LI_DIRTY, &attrdp->attrd_item.li_flags);
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return error;
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}
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/* Log an attr to the intent item. */
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STATIC void
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xfs_attr_log_item(
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struct xfs_trans *tp,
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struct xfs_attri_log_item *attrip,
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struct xfs_attr_item *attr)
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{
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struct xfs_attri_log_format *attrp;
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tp->t_flags |= XFS_TRANS_DIRTY;
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|
|
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;
|
2022-05-11 10:01:22 +03:00
|
|
|
attrp->alfi_ino = attr->xattri_da_args->dp->i_ino;
|
2022-05-09 12:09:07 +03:00
|
|
|
attrp->alfi_op_flags = attr->xattri_op_flags;
|
2022-05-11 10:01:22 +03:00
|
|
|
attrp->alfi_value_len = attr->xattri_da_args->valuelen;
|
|
|
|
attrp->alfi_name_len = attr->xattri_da_args->namelen;
|
|
|
|
attrp->alfi_attr_flags = 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;
|
2022-05-09 12:09:07 +03:00
|
|
|
}
|
|
|
|
|
|
|
|
/* 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) {
|
2022-05-11 10:01:22 +03:00
|
|
|
attrip = xfs_attri_init(mp, attr->xattri_da_args->namelen,
|
|
|
|
attr->xattri_da_args->valuelen);
|
2022-05-09 12:09:07 +03:00
|
|
|
if (attrip == NULL)
|
|
|
|
return NULL;
|
|
|
|
|
|
|
|
xfs_trans_add_item(tp, &attrip->attri_item);
|
|
|
|
xfs_attr_log_item(tp, attrip, attr);
|
|
|
|
}
|
|
|
|
|
|
|
|
return &attrip->attri_item;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* 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
|
|
|
|
*/
|
2022-05-11 10:01:22 +03:00
|
|
|
attr->xattri_da_args->trans = tp;
|
2022-05-09 12:09:07 +03:00
|
|
|
|
2022-05-12 08:12:56 +03:00
|
|
|
error = xfs_xattri_finish_update(attr, done_item);
|
2022-05-09 12:09:07 +03:00
|
|
|
if (error != -EAGAIN)
|
|
|
|
kmem_free(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);
|
|
|
|
kmem_free(attr);
|
|
|
|
}
|
|
|
|
|
2022-05-04 05:41:02 +03:00
|
|
|
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_ATTR_OP_FLAGS_TYPE_MASK;
|
|
|
|
|
|
|
|
if (attrp->__pad != 0)
|
|
|
|
return false;
|
|
|
|
|
|
|
|
/* alfi_op_flags should be either a set or remove */
|
2022-05-11 10:05:23 +03:00
|
|
|
switch (op) {
|
|
|
|
case XFS_ATTR_OP_FLAGS_SET:
|
|
|
|
case XFS_ATTR_OP_FLAGS_REPLACE:
|
|
|
|
case XFS_ATTR_OP_FLAGS_REMOVE:
|
|
|
|
break;
|
|
|
|
default:
|
2022-05-04 05:41:02 +03:00
|
|
|
return false;
|
2022-05-11 10:05:23 +03:00
|
|
|
}
|
2022-05-04 05:41:02 +03:00
|
|
|
|
|
|
|
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);
|
|
|
|
}
|
|
|
|
|
2022-05-09 12:09:07 +03:00
|
|
|
/*
|
|
|
|
* 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);
|
|
|
|
|
2022-05-11 10:01:22 +03:00
|
|
|
attr->xattri_da_args = args;
|
2022-05-09 12:09:07 +03:00
|
|
|
attr->xattri_op_flags = attrp->alfi_op_flags;
|
|
|
|
|
|
|
|
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_flags;
|
|
|
|
|
xfs: separate out initial attr_set states
We current use XFS_DAS_UNINIT for several steps in the attr_set
state machine. We use it for setting shortform xattrs, converting
from shortform to leaf, leaf add, leaf-to-node and leaf add. All of
these things are essentially known before we start the state machine
iterating, so we really should separate them out:
XFS_DAS_SF_ADD:
- tries to do a shortform add
- on success -> done
- on ENOSPC converts to leaf, -> XFS_DAS_LEAF_ADD
- on error, dies.
XFS_DAS_LEAF_ADD:
- tries to do leaf add
- on success:
- inline attr -> done
- remote xattr || REPLACE -> XFS_DAS_FOUND_LBLK
- on ENOSPC converts to node, -> XFS_DAS_NODE_ADD
- on error, dies
XFS_DAS_NODE_ADD:
- tries to do node add
- on success:
- inline attr -> done
- remote xattr || REPLACE -> XFS_DAS_FOUND_NBLK
- on error, dies
This makes it easier to understand how the state machine starts
up and sets us up on the path to further state machine
simplifications.
This also converts the DAS state tracepoints to use strings rather
than numbers, as converting between enums and numbers requires
manual counting rather than just reading the name.
This also introduces a XFS_DAS_DONE state so that we can trace
successful operation completions easily.
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Allison Henderson<allison.henderson@oracle.com>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Dave Chinner <david@fromorbit.com>
2022-05-12 08:12:52 +03:00
|
|
|
switch (attrp->alfi_op_flags & XFS_ATTR_OP_FLAGS_TYPE_MASK) {
|
|
|
|
case XFS_ATTR_OP_FLAGS_SET:
|
|
|
|
case XFS_ATTR_OP_FLAGS_REPLACE:
|
2022-05-09 12:09:07 +03:00
|
|
|
args->value = attrip->attri_value;
|
|
|
|
args->valuelen = attrp->alfi_value_len;
|
|
|
|
args->total = xfs_attr_calc_size(args, &local);
|
xfs: separate out initial attr_set states
We current use XFS_DAS_UNINIT for several steps in the attr_set
state machine. We use it for setting shortform xattrs, converting
from shortform to leaf, leaf add, leaf-to-node and leaf add. All of
these things are essentially known before we start the state machine
iterating, so we really should separate them out:
XFS_DAS_SF_ADD:
- tries to do a shortform add
- on success -> done
- on ENOSPC converts to leaf, -> XFS_DAS_LEAF_ADD
- on error, dies.
XFS_DAS_LEAF_ADD:
- tries to do leaf add
- on success:
- inline attr -> done
- remote xattr || REPLACE -> XFS_DAS_FOUND_LBLK
- on ENOSPC converts to node, -> XFS_DAS_NODE_ADD
- on error, dies
XFS_DAS_NODE_ADD:
- tries to do node add
- on success:
- inline attr -> done
- remote xattr || REPLACE -> XFS_DAS_FOUND_NBLK
- on error, dies
This makes it easier to understand how the state machine starts
up and sets us up on the path to further state machine
simplifications.
This also converts the DAS state tracepoints to use strings rather
than numbers, as converting between enums and numbers requires
manual counting rather than just reading the name.
This also introduces a XFS_DAS_DONE state so that we can trace
successful operation completions easily.
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Allison Henderson<allison.henderson@oracle.com>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Dave Chinner <david@fromorbit.com>
2022-05-12 08:12:52 +03:00
|
|
|
attr->xattri_dela_state = xfs_attr_init_add_state(args);
|
|
|
|
break;
|
|
|
|
case XFS_ATTR_OP_FLAGS_REMOVE:
|
2022-05-12 08:12:56 +03:00
|
|
|
attr->xattri_dela_state = xfs_attr_init_remove_state(args);
|
xfs: separate out initial attr_set states
We current use XFS_DAS_UNINIT for several steps in the attr_set
state machine. We use it for setting shortform xattrs, converting
from shortform to leaf, leaf add, leaf-to-node and leaf add. All of
these things are essentially known before we start the state machine
iterating, so we really should separate them out:
XFS_DAS_SF_ADD:
- tries to do a shortform add
- on success -> done
- on ENOSPC converts to leaf, -> XFS_DAS_LEAF_ADD
- on error, dies.
XFS_DAS_LEAF_ADD:
- tries to do leaf add
- on success:
- inline attr -> done
- remote xattr || REPLACE -> XFS_DAS_FOUND_LBLK
- on ENOSPC converts to node, -> XFS_DAS_NODE_ADD
- on error, dies
XFS_DAS_NODE_ADD:
- tries to do node add
- on success:
- inline attr -> done
- remote xattr || REPLACE -> XFS_DAS_FOUND_NBLK
- on error, dies
This makes it easier to understand how the state machine starts
up and sets us up on the path to further state machine
simplifications.
This also converts the DAS state tracepoints to use strings rather
than numbers, as converting between enums and numbers requires
manual counting rather than just reading the name.
This also introduces a XFS_DAS_DONE state so that we can trace
successful operation completions easily.
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Allison Henderson<allison.henderson@oracle.com>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Dave Chinner <david@fromorbit.com>
2022-05-12 08:12:52 +03:00
|
|
|
break;
|
|
|
|
default:
|
|
|
|
ASSERT(0);
|
|
|
|
error = -EFSCORRUPTED;
|
|
|
|
goto out;
|
2022-05-09 12:09:07 +03:00
|
|
|
}
|
2022-05-11 10:01:23 +03:00
|
|
|
|
|
|
|
xfs_init_attr_trans(args, &tres, &total);
|
2022-05-09 12:09:07 +03:00
|
|
|
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);
|
|
|
|
|
2022-05-12 08:12:56 +03:00
|
|
|
ret = xfs_xattri_finish_update(attr, done_item);
|
2022-05-09 12:09:07 +03:00
|
|
|
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:
|
2022-05-11 10:01:22 +03:00
|
|
|
if (attr->xattri_leaf_bp)
|
|
|
|
xfs_buf_relse(attr->xattri_leaf_bp);
|
2022-05-09 12:09:07 +03:00
|
|
|
|
|
|
|
xfs_iunlock(ip, XFS_ILOCK_EXCL);
|
|
|
|
xfs_irele(ip);
|
|
|
|
out:
|
|
|
|
if (ret != -EAGAIN)
|
|
|
|
kmem_free(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_flags = old_attrp->alfi_attr_flags;
|
|
|
|
|
|
|
|
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;
|
|
|
|
}
|
|
|
|
|
2022-05-04 05:41:02 +03:00
|
|
|
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;
|
|
|
|
int region = 0;
|
|
|
|
|
|
|
|
attri_formatp = item->ri_buf[region].i_addr;
|
|
|
|
|
|
|
|
/* Validate xfs_attri_log_format */
|
|
|
|
if (!xfs_attri_validate(mp, attri_formatp)) {
|
|
|
|
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 (!xfs_attr_namecheck(attrip->attri_name, attrip->attri_name_len)) {
|
|
|
|
XFS_ERROR_REPORT(__func__, XFS_ERRLEVEL_LOW, mp);
|
|
|
|
error = -EFSCORRUPTED;
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
|
|
|
|
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;
|
|
|
|
}
|
|
|
|
|
2022-05-09 12:09:07 +03:00
|
|
|
/*
|
|
|
|
* 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);
|
|
|
|
|
2022-05-11 10:03:23 +03:00
|
|
|
attrdp = kmem_cache_zalloc(xfs_attrd_cache, GFP_NOFS | __GFP_NOFAIL);
|
2022-05-09 12:09:07 +03:00
|
|
|
|
|
|
|
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,
|
|
|
|
};
|
|
|
|
|
2022-05-04 05:41:02 +03:00
|
|
|
/*
|
|
|
|
* 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,
|
2022-05-09 12:09:07 +03:00
|
|
|
.iop_recover = xfs_attri_item_recover,
|
2022-05-04 05:41:02 +03:00
|
|
|
.iop_match = xfs_attri_item_match,
|
2022-05-09 12:09:07 +03:00
|
|
|
.iop_relog = xfs_attri_item_relog,
|
2022-05-04 05:41:02 +03:00
|
|
|
};
|
|
|
|
|
|
|
|
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,
|
2022-05-09 12:09:07 +03:00
|
|
|
.iop_intent = xfs_attrd_item_intent,
|
2022-05-04 05:41:02 +03:00
|
|
|
};
|
|
|
|
|
|
|
|
const struct xlog_recover_item_ops xlog_attrd_item_ops = {
|
|
|
|
.item_type = XFS_LI_ATTRD,
|
|
|
|
.commit_pass2 = xlog_recover_attrd_commit_pass2,
|
|
|
|
};
|