linux-imx

// SPDX-License-Identifier: GPL-2.0

/*

 * Copyright (c) 2000-2005 Silicon Graphics, Inc.

 * Copyright (c) 2013 Red Hat, 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_bit.h"

#include "xfs_mount.h"

#include "xfs_defer.h"

#include "xfs_da_format.h"

#include "xfs_da_btree.h"

#include "xfs_inode.h"

#include "xfs_alloc.h"

#include "xfs_trans.h"

#include "xfs_inode_item.h"

#include "xfs_bmap.h"

#include "xfs_bmap_util.h"

#include "xfs_attr.h"

#include "xfs_attr_leaf.h"

#include "xfs_attr_remote.h"

#include "xfs_trans_space.h"

#include "xfs_trace.h"

#include "xfs_cksum.h"

#include "xfs_buf_item.h"

#include "xfs_error.h"

​

#define ATTR_RMTVALUE_MAPSIZE   1   /* # of map entries at once */

​

/*

 * Each contiguous block has a header, so it is not just a simple attribute

 * length to FSB conversion.

 */

int

xfs_attr3_rmt_blocks(

    struct xfs_mount *mp,

    int     attrlen)

{

    if (xfs_sb_version_hascrc(&mp->m_sb)) {

        int buflen = XFS_ATTR3_RMT_BUF_SPACE(mp, mp->m_sb.sb_blocksize);

        return (attrlen + buflen - 1) / buflen;

    }

    return XFS_B_TO_FSB(mp, attrlen);

}

​

/*

 * Checking of the remote attribute header is split into two parts. The verifier

 * does CRC, location and bounds checking, the unpacking function checks the

 * attribute parameters and owner.

 */

static xfs_failaddr_t

xfs_attr3_rmt_hdr_ok(

    void            *ptr,

    xfs_ino_t       ino,

    uint32_t        offset,

    uint32_t        size,

    xfs_daddr_t     bno)

{