usbloadergx/source/libntfs/inode.c

/**
 * inode.c - Inode handling code. Originated from the Linux-NTFS project.
 *
 * Copyright (c) 2002-2005 Anton Altaparmakov
 * Copyright (c) 2002-2008 Szabolcs Szakacsits
 * Copyright (c) 2004-2007 Yura Pakhuchiy
 * Copyright (c) 2004-2005 Richard Russon
 * Copyright (c) 2009-2010 Jean-Pierre Andre
 *
 * This program/include file is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as published
 * by the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program/include file is distributed in the hope that it will be
 * useful, but WITHOUT ANY WARRANTY; without even the implied warranty
 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program (in the main directory of the NTFS-3G
 * distribution in the file COPYING); if not, write to the Free Software
 * Foundation,Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif
#ifdef HAVE_STRING_H
#include <string.h>
#endif
#ifdef HAVE_ERRNO_H
#include <errno.h>
#endif
#ifdef HAVE_SETXATTR
#include <sys/xattr.h>
#endif

#include "param.h"
#include "compat.h"
#include "types.h"
#include "volume.h"
#include "cache.h"
#include "inode.h"
#include "attrib.h"
#include "debug.h"
#include "mft.h"
#include "attrlist.h"
#include "runlist.h"
#include "lcnalloc.h"
#include "index.h"
#include "dir.h"
#include "ntfstime.h"
#include "logging.h"
#include "misc.h"

ntfs_inode *ntfs_inode_base(ntfs_inode *ni)
{
    if (ni->nr_extents == -1) return ni->base_ni;
    return ni;
}

/**
 * ntfs_inode_mark_dirty - set the inode (and its base inode if it exists) dirty
 * @ni:		ntfs inode to set dirty
 *
 * Set the inode @ni dirty so it is written out later (at the latest at
 * ntfs_inode_close() time). If @ni is an extent inode, set the base inode
 * dirty, too.
 *
 * This function cannot fail.
 */
void ntfs_inode_mark_dirty(ntfs_inode *ni)
{
    NInoSetDirty(ni);
    if (ni->nr_extents == -1) NInoSetDirty(ni->base_ni);
}

/**
 * __ntfs_inode_allocate - Create and initialise an NTFS inode object
 * @vol:
 *
 * Description...
 *
 * Returns:
 */
static ntfs_inode *__ntfs_inode_allocate(ntfs_volume *vol)
{
    ntfs_inode *ni;

    ni = (ntfs_inode*) ntfs_calloc(sizeof(ntfs_inode));
    if (ni) ni->vol = vol;
    return ni;
}

/**
 * ntfs_inode_allocate - Create an NTFS inode object
 * @vol:
 *
 * Description...
 *
 * Returns:
 */
ntfs_inode *ntfs_inode_allocate(ntfs_volume *vol)
{
    return __ntfs_inode_allocate(vol);
}

/**
 * __ntfs_inode_release - Destroy an NTFS inode object
 * @ni:
 *
 * Description...
 *
 * Returns:
 */
static void __ntfs_inode_release(ntfs_inode *ni)
{
    if (NInoDirty(ni)) ntfs_log_error("Releasing dirty inode %lld!\n",
            (long long)ni->mft_no);
    if (NInoAttrList(ni) && ni->attr_list) free(ni->attr_list);
    free(ni->mrec);
    free(ni);
    return;
}

/**
 * ntfs_inode_open - open an inode ready for access
 * @vol:	volume to get the inode from
 * @mref:	inode number / mft record number to open
 *
 * Allocate an ntfs_inode structure and initialize it for the given inode
 * specified by @mref. @mref specifies the inode number / mft record to read,
 * including the sequence number, which can be 0 if no sequence number checking
 * is to be performed.
 *
 * Then, allocate a buffer for the mft record, read the mft record from the
 * volume @vol, and attach it to the ntfs_inode structure (->mrec). The
 * mft record is mst deprotected and sanity checked for validity and we abort
 * if deprotection or checks fail.
 *
 * Finally, search for an attribute list attribute in the mft record and if one
 * is found, load the attribute list attribute value and attach it to the
 * ntfs_inode structure (->attr_list). Also set the NI_AttrList bit to indicate
 * this.
 *
 * Return a pointer to the ntfs_inode structure on success or NULL on error,
 * with errno set to the error code.
 */
static ntfs_inode *ntfs_inode_real_open(ntfs_volume *vol, const MFT_REF mref)
{
    s64 l;
    ntfs_inode *ni = NULL;
    ntfs_attr_search_ctx *ctx;
    STANDARD_INFORMATION *std_info;
    le32 lthle;
    int olderrno;

    ntfs_log_enter("Entering for inode %lld\n", (long long)MREF(mref));
    if (!vol)
    {
        errno = EINVAL;
        goto out;
    }
    ni = __ntfs_inode_allocate(vol);
    if (!ni) goto out;
    if (ntfs_file_record_read(vol, mref, &ni->mrec, NULL)) goto err_out;
    if (!(ni->mrec->flags & MFT_RECORD_IN_USE))
    {
        errno = ENOENT;
        goto err_out;
    }
    ni->mft_no = MREF(mref);
    ctx = ntfs_attr_get_search_ctx(ni, NULL);
    if (!ctx) goto err_out;
    /* Receive some basic information about inode. */
    if (ntfs_attr_lookup(AT_STANDARD_INFORMATION, AT_UNNAMED, 0, CASE_SENSITIVE, 0, NULL, 0, ctx))
    {
        if (!ni->mrec->base_mft_record) ntfs_log_perror("No STANDARD_INFORMATION in base record"
                " %lld", (long long)MREF(mref));
        goto put_err_out;
    }
    std_info = (STANDARD_INFORMATION *) ((u8 *) ctx->attr + le16_to_cpu(ctx->attr->value_offset));
    ni->flags = std_info->file_attributes;
    ni->creation_time = std_info->creation_time;
    ni->last_data_change_time = std_info->last_data_change_time;
    ni->last_mft_change_time = std_info->last_mft_change_time;
    ni->last_access_time = std_info->last_access_time;
    /* JPA insert v3 extensions if present */
    /* length may be seen as 72 (v1.x) or 96 (v3.x) */
    lthle = ctx->attr->length;
    if (le32_to_cpu(lthle) > sizeof(STANDARD_INFORMATION))
    {
        set_nino_flag(ni, v3_Extensions);
        ni->owner_id = std_info->owner_id;
        ni->security_id = std_info->security_id;
        ni->quota_charged = std_info->quota_charged;
        ni->usn = std_info->usn;
    }
    else
    {
        clear_nino_flag(ni, v3_Extensions);
        ni->owner_id = const_cpu_to_le32(0);
        ni->security_id = const_cpu_to_le32(0);
    }
    /* Set attribute list information. */
    olderrno = errno;
    if (ntfs_attr_lookup(AT_ATTRIBUTE_LIST, AT_UNNAMED, 0, CASE_SENSITIVE, 0, NULL, 0, ctx))
    {
        if (errno != ENOENT) goto put_err_out;
        /* Attribute list attribute does not present. */
        /* restore previous errno to avoid misinterpretation */
        errno = olderrno;
        goto get_size;
    }
    NInoSetAttrList(ni);
    l = ntfs_get_attribute_value_length(ctx->attr);
    if (!l) goto put_err_out;
    if (l > 0x40000)
    {
        errno = EIO;
        ntfs_log_perror("Too large attrlist attribute (%lld), inode "
                "%lld", (long long)l, (long long)MREF(mref));
        goto put_err_out;
    }
    ni->attr_list_size = l;
    ni->attr_list = ntfs_malloc(ni->attr_list_size);
    if (!ni->attr_list) goto put_err_out;
    l = ntfs_get_attribute_value(vol, ctx->attr, ni->attr_list);
    if (!l) goto put_err_out;
    if (l != ni->attr_list_size)
    {
        errno = EIO;
        ntfs_log_perror("Unexpected attrlist size (%lld <> %u), inode "
                "%lld", (long long)l, ni->attr_list_size,
                (long long)MREF(mref));
        goto put_err_out;
    }
    get_size: olderrno = errno;
    if (ntfs_attr_lookup(AT_DATA, AT_UNNAMED, 0, 0, 0, NULL, 0, ctx))
    {
        if (errno != ENOENT) goto put_err_out;
        /* Directory or special file. */
        /* restore previous errno to avoid misinterpretation */
        errno = olderrno;
        ni->data_size = ni->allocated_size = 0;
    }
    else
    {
        if (ctx->attr->non_resident)
        {
            ni->data_size = sle64_to_cpu(ctx->attr->data_size);
            if (ctx->attr->flags & (ATTR_IS_COMPRESSED | ATTR_IS_SPARSE))
                ni->allocated_size = sle64_to_cpu(
                        ctx->attr->compressed_size);
            else ni->allocated_size = sle64_to_cpu(
                    ctx->attr->allocated_size);
        }
        else
        {
            ni->data_size = le32_to_cpu(ctx->attr->value_length);
            ni->allocated_size = (ni->data_size + 7) & ~7;
        }
        set_nino_flag(ni,KnownSize);
    }
    ntfs_attr_put_search_ctx(ctx);
    out:
    ntfs_log_leave("\n");
    return ni;

    put_err_out: ntfs_attr_put_search_ctx(ctx);
    err_out: __ntfs_inode_release(ni);
    ni = NULL;
    goto out;
}

/**
 * ntfs_inode_close - close an ntfs inode and free all associated memory
 * @ni:		ntfs inode to close
 *
 * Make sure the ntfs inode @ni is clean.
 *
 * If the ntfs inode @ni is a base inode, close all associated extent inodes,
 * then deallocate all memory attached to it, and finally free the ntfs inode
 * structure itself.
 *
 * If it is an extent inode, we disconnect it from its base inode before we
 * destroy it.
 *
 * It is OK to pass NULL to this function, it is just noop in this case.
 *
 * Return 0 on success or -1 on error with errno set to the error code. On
 * error, @ni has not been freed. The user should attempt to handle the error
 * and call ntfs_inode_close() again. The following error codes are defined:
 *
 *	EBUSY	@ni and/or its attribute list runlist is/are dirty and the
 *		attempt to write it/them to disk failed.
 *	EINVAL	@ni is invalid (probably it is an extent inode).
 *	EIO	I/O error while trying to write inode to disk.
 */

int ntfs_inode_real_close(ntfs_inode *ni)
{
    int ret = -1;

    if (!ni) return 0;

    ntfs_log_enter("Entering for inode %lld\n", (long long)ni->mft_no);

    /* If we have dirty metadata, write it out. */
    if (NInoDirty(ni) || NInoAttrListDirty(ni))
    {
        if (ntfs_inode_sync(ni))
        {
            if (errno != EIO) errno = EBUSY;
            goto err;
        }
    }
    /* Is this a base inode with mapped extent inodes? */
    if (ni->nr_extents > 0)
    {
        while (ni->nr_extents > 0)
        {
            if (ntfs_inode_real_close(ni->extent_nis[0]))
            {
                if (errno != EIO) errno = EBUSY;
                goto err;
            }
        }
    }
    else if (ni->nr_extents == -1)
    {
        ntfs_inode **tmp_nis;
        ntfs_inode *base_ni;
        s32 i;

        /*
         * If the inode is an extent inode, disconnect it from the
         * base inode before destroying it.
         */
        base_ni = ni->base_ni;
        for (i = 0; i < base_ni->nr_extents; ++i)
        {
            tmp_nis = base_ni->extent_nis;
            if (tmp_nis[i] != ni) continue;
            /* Found it. Disconnect. */
            memmove(tmp_nis + i, tmp_nis + i + 1, (base_ni->nr_extents - i - 1) * sizeof(ntfs_inode *));
            /* Buffer should be for multiple of four extents. */
            if ((--base_ni->nr_extents) & 3)
            {
                i = -1;
                break;
            }
            /*
             * ElectricFence is unhappy with realloc(x,0) as free(x)
             * thus we explicitly separate these two cases.
             */
            if (base_ni->nr_extents)
            {
                /* Resize the memory buffer. */
                tmp_nis = realloc(tmp_nis, base_ni->nr_extents * sizeof(ntfs_inode *));
                /* Ignore errors, they don't really matter. */
                if (tmp_nis) base_ni->extent_nis = tmp_nis;
            }
            else if (tmp_nis)
            {
                free(tmp_nis);
                base_ni->extent_nis = (ntfs_inode**) NULL;
            }
            /* Allow for error checking. */
            i = -1;
            break;
        }

        /*
         *  We could successfully sync, so only log this error
         *  and try to sync other inode extents too.
         */
        if (i != -1) ntfs_log_error("Extent inode %lld was not found\n",
                (long long)ni->mft_no);
    }

    __ntfs_inode_release(ni);
    ret = 0;
    err:
    ntfs_log_leave("\n");
    return ret;
}

#if CACHE_NIDATA_SIZE

/*
 *		Free an inode structure when there is not more space
 *	in the cache
 */

void ntfs_inode_nidata_free(const struct CACHED_GENERIC *cached)
{
    ntfs_inode_real_close(((const struct CACHED_NIDATA*) cached)->ni);
}

/*
 *		Compute a hash value for an inode entry
 */

int ntfs_inode_nidata_hash(const struct CACHED_GENERIC *item)
{
    return (((const struct CACHED_NIDATA*) item)->inum % (2 * CACHE_NIDATA_SIZE));
}

/*
 *		inum comparing for entering/fetching from cache
 */

static int idata_cache_compare(const struct CACHED_GENERIC *cached, const struct CACHED_GENERIC *wanted)
{
    return (((const struct CACHED_NIDATA*) cached)->inum != ((const struct CACHED_NIDATA*) wanted)->inum);
}

/*
 *		Invalidate an inode entry when not needed anymore.
 *	The entry should have been synced, it may be reused later,
 *	if it is requested before it is dropped from cache.
 */

void ntfs_inode_invalidate(ntfs_volume *vol, const MFT_REF mref)
{
    struct CACHED_NIDATA item;
    int count;

    item.inum = MREF(mref);
    item.ni = (ntfs_inode*) NULL;
    item.pathname = (const char*) NULL;
    item.varsize = 0;
    count = ntfs_invalidate_cache(vol->nidata_cache, GENERIC(&item), idata_cache_compare, CACHE_FREE);
}

#endif

/*
 *		Open an inode
 *
 *	When possible, an entry recorded in the cache is reused
 *
 *	**NEVER REOPEN** an inode, this can lead to a duplicated
 * 	cache entry (hard to detect), and to an obsolete one being
 *	reused. System files are however protected from being cached.
 */

ntfs_inode *ntfs_inode_open(ntfs_volume *vol, const MFT_REF mref)
{
    ntfs_inode *ni;
#if CACHE_NIDATA_SIZE
    struct CACHED_NIDATA item;
    struct CACHED_NIDATA *cached;

    /* fetch idata from cache */
    item.inum = MREF(mref);
    debug_double_inode(item.inum,1);
    item.pathname = (const char*) NULL;
    item.varsize = 0;
    cached = (struct CACHED_NIDATA*) ntfs_fetch_cache(vol->nidata_cache, GENERIC(&item), idata_cache_compare);
    if (cached)
    {
        ni = cached->ni;
        /* do not keep open entries in cache */
        ntfs_remove_cache(vol->nidata_cache, (struct CACHED_GENERIC*) cached, 0);
    }
    else
    {
        ni = ntfs_inode_real_open(vol, mref);
    }
#else
    ni = ntfs_inode_real_open(vol, mref);
#endif
    return (ni);
}

/*
 *		Close an inode entry
 *
 *	If cacheing is in use, the entry is synced and kept available
 *	in cache for further use.
 *
 *	System files (inode < 16 or having the IS_4 flag) are protected
 *	against being cached.
 */

int ntfs_inode_close(ntfs_inode *ni)
{
    int res;
#if CACHE_NIDATA_SIZE
    BOOL dirty;
    struct CACHED_NIDATA item;

    if (ni)
    {
        debug_double_inode(ni->mft_no,0);
        /* do not cache system files : could lead to double entries */
        if (ni->vol && ni->vol->nidata_cache && ((ni->mft_no == FILE_root) || ((ni->mft_no >= FILE_first_user)
                && !(ni->mrec->flags & MFT_RECORD_IS_4))))
        {
            /* If we have dirty metadata, write it out. */
            dirty = NInoDirty(ni) || NInoAttrListDirty(ni);
            if (dirty)
            {
                res = ntfs_inode_sync(ni);
                /* do a real close if sync failed */
                if (res) ntfs_inode_real_close(ni);
            }
            else res = 0;

            if (!res)
            {
                /* feed idata into cache */
                item.inum = ni->mft_no;
                item.ni = ni;
                item.pathname = (const char*) NULL;
                item.varsize = 0;
                debug_cached_inode(ni);
                ntfs_enter_cache(ni->vol->nidata_cache, GENERIC(&item), idata_cache_compare);
            }
        }
        else
        {
            /* cache not ready or system file, really close */
            res = ntfs_inode_real_close(ni);
        }
    }
    else res = 0;
#else
    res = ntfs_inode_real_close(ni);
#endif
    return (res);
}

/**
 * ntfs_extent_inode_open - load an extent inode and attach it to its base
 * @base_ni:	base ntfs inode
 * @mref:	mft reference of the extent inode to load (in little endian)
 *
 * First check if the extent inode @mref is already attached to the base ntfs
 * inode @base_ni, and if so, return a pointer to the attached extent inode.
 *
 * If the extent inode is not already attached to the base inode, allocate an
 * ntfs_inode structure and initialize it for the given inode @mref. @mref
 * specifies the inode number / mft record to read, including the sequence
 * number, which can be 0 if no sequence number checking is to be performed.
 *
 * Then, allocate a buffer for the mft record, read the mft record from the
 * volume @base_ni->vol, and attach it to the ntfs_inode structure (->mrec).
 * The mft record is mst deprotected and sanity checked for validity and we
 * abort if deprotection or checks fail.
 *
 * Finally attach the ntfs inode to its base inode @base_ni and return a
 * pointer to the ntfs_inode structure on success or NULL on error, with errno
 * set to the error code.
 *
 * Note, extent inodes are never closed directly. They are automatically
 * disposed off by the closing of the base inode.
 */
ntfs_inode *ntfs_extent_inode_open(ntfs_inode *base_ni, const MFT_REF mref)
{
    u64 mft_no = MREF_LE(mref);
    ntfs_inode *ni = NULL;
    ntfs_inode **extent_nis;
    int i;

    if (!base_ni)
    {
        errno = EINVAL;
        ntfs_log_perror("%s", __FUNCTION__);
        return NULL;
    }

    ntfs_log_enter("Opening extent inode %lld (base mft record %lld).\n",
            (unsigned long long)mft_no,
            (unsigned long long)base_ni->mft_no);

    /* Is the extent inode already open and attached to the base inode? */
    if (base_ni->nr_extents > 0)
    {
        extent_nis = base_ni->extent_nis;
        for (i = 0; i < base_ni->nr_extents; i++)
        {
            u16 seq_no;

            ni = extent_nis[i];
            if (mft_no != ni->mft_no) continue;
            /* Verify the sequence number if given. */
            seq_no = MSEQNO_LE(mref);
            if (seq_no && seq_no != le16_to_cpu(
                    ni->mrec->sequence_number))
            {
                errno = EIO;
                ntfs_log_perror("Found stale extent mft "
                        "reference mft=%lld",
                        (long long)ni->mft_no);
                goto out;
            }
            goto out;
        }
    }
    /* Wasn't there, we need to load the extent inode. */
    ni = __ntfs_inode_allocate(base_ni->vol);
    if (!ni) goto out;
    if (ntfs_file_record_read(base_ni->vol, le64_to_cpu(mref), &ni->mrec, NULL)) goto err_out;
    ni->mft_no = mft_no;
    ni->nr_extents = -1;
    ni->base_ni = base_ni;
    /* Attach extent inode to base inode, reallocating memory if needed. */
    if (!(base_ni->nr_extents & 3))
    {
        i = (base_ni->nr_extents + 4) * sizeof(ntfs_inode *);

        extent_nis = ntfs_malloc(i);
        if (!extent_nis) goto err_out;
        if (base_ni->nr_extents)
        {
            memcpy(extent_nis, base_ni->extent_nis, i - 4 * sizeof(ntfs_inode *));
            free(base_ni->extent_nis);
        }
        base_ni->extent_nis = extent_nis;
    }
    base_ni->extent_nis[base_ni->nr_extents++] = ni;
    out:
    ntfs_log_leave("\n");
    return ni;
    err_out: __ntfs_inode_release(ni);
    ni = NULL;
    goto out;
}

/**
 * ntfs_inode_attach_all_extents - attach all extents for target inode
 * @ni:		opened ntfs inode for which perform attach
 *
 * Return 0 on success and -1 on error with errno set to the error code.
 */
int ntfs_inode_attach_all_extents(ntfs_inode *ni)
{
    ATTR_LIST_ENTRY *ale;
    u64 prev_attached = 0;

    if (!ni)
    {
        ntfs_log_trace("Invalid arguments.\n");
        errno = EINVAL;
        return -1;
    }

    if (ni->nr_extents == -1) ni = ni->base_ni;

    ntfs_log_trace("Entering for inode 0x%llx.\n", (long long) ni->mft_no);

    /* Inode haven't got attribute list, thus nothing to attach. */
    if (!NInoAttrList(ni)) return 0;

    if (!ni->attr_list)
    {
        ntfs_log_trace("Corrupt in-memory struct.\n");
        errno = EINVAL;
        return -1;
    }

    /* Walk through attribute list and attach all extents. */
    errno = 0;
    ale = (ATTR_LIST_ENTRY *) ni->attr_list;
    while ((u8*) ale < ni->attr_list + ni->attr_list_size)
    {
        if (ni->mft_no != MREF_LE(ale->mft_reference) && prev_attached != MREF_LE(ale->mft_reference))
        {
            if (!ntfs_extent_inode_open(ni, ale->mft_reference))
            {
                ntfs_log_trace("Couldn't attach extent inode.\n");
                return -1;
            }
            prev_attached = MREF_LE(ale->mft_reference);
        }
        ale = (ATTR_LIST_ENTRY *) ((u8*) ale + le16_to_cpu(ale->length));
    }
    return 0;
}

/**
 * ntfs_inode_sync_standard_information - update standard information attribute
 * @ni:		ntfs inode to update standard information
 *
 * Return 0 on success or -1 on error with errno set to the error code.
 */
static int ntfs_inode_sync_standard_information(ntfs_inode *ni)
{
    ntfs_attr_search_ctx *ctx;
    STANDARD_INFORMATION *std_info;
    u32 lth;
    le32 lthle;

    ntfs_log_trace("Entering for inode %lld\n", (long long)ni->mft_no);

    ctx = ntfs_attr_get_search_ctx(ni, NULL);
    if (!ctx) return -1;
    if (ntfs_attr_lookup(AT_STANDARD_INFORMATION, AT_UNNAMED, 0, CASE_SENSITIVE, 0, NULL, 0, ctx))
    {
        ntfs_log_perror("Failed to sync standard info (inode %lld)",
                (long long)ni->mft_no);
        ntfs_attr_put_search_ctx(ctx);
        return -1;
    }
    std_info = (STANDARD_INFORMATION *) ((u8 *) ctx->attr + le16_to_cpu(ctx->attr->value_offset));
    std_info->file_attributes = ni->flags;
    if (!test_nino_flag(ni, TimesSet))
    {
        std_info->creation_time = ni->creation_time;
        std_info->last_data_change_time = ni->last_data_change_time;
        std_info->last_mft_change_time = ni->last_mft_change_time;
        std_info->last_access_time = ni->last_access_time;
    }

    /* JPA update v3.x extensions, ensuring consistency */

    lthle = ctx->attr->length;
    lth = le32_to_cpu(lthle);
    if (test_nino_flag(ni, v3_Extensions) && (lth <= sizeof(STANDARD_INFORMATION))) ntfs_log_error("bad sync of standard information\n");

    if (lth > sizeof(STANDARD_INFORMATION))
    {
        std_info->owner_id = ni->owner_id;
        std_info->security_id = ni->security_id;
        std_info->quota_charged = ni->quota_charged;
        std_info->usn = ni->usn;
    }
    ntfs_inode_mark_dirty(ctx->ntfs_ino);
    ntfs_attr_put_search_ctx(ctx);
    return 0;
}

/**
 * ntfs_inode_sync_file_name - update FILE_NAME attributes
 * @ni:		ntfs inode to update FILE_NAME attributes
 *
 * Update all FILE_NAME attributes for inode @ni in the index.
 *
 * Return 0 on success or -1 on error with errno set to the error code.
 */
static int ntfs_inode_sync_file_name(ntfs_inode *ni, ntfs_inode *dir_ni)
{
    ntfs_attr_search_ctx *ctx = NULL;
    ntfs_index_context *ictx;
    ntfs_inode *index_ni;
    FILE_NAME_ATTR *fn;
    FILE_NAME_ATTR *fnx;
    REPARSE_POINT *rpp;
    le32 reparse_tag;
    int err = 0;

    ntfs_log_trace("Entering for inode %lld\n", (long long)ni->mft_no);

    ctx = ntfs_attr_get_search_ctx(ni, NULL);
    if (!ctx)
    {
        err = errno;
        goto err_out;
    }
    /* Collect the reparse tag, if any */
    reparse_tag = cpu_to_le32(0);
    if (ni->flags & FILE_ATTR_REPARSE_POINT)
    {
        if (!ntfs_attr_lookup(AT_REPARSE_POINT, NULL, 0, CASE_SENSITIVE, 0, NULL, 0, ctx))
        {
            rpp = (REPARSE_POINT*) ((u8 *) ctx->attr + le16_to_cpu(ctx->attr->value_offset));
            reparse_tag = rpp->reparse_tag;
        }
        ntfs_attr_reinit_search_ctx(ctx);
    }
    /* Walk through all FILE_NAME attributes and update them. */
    while (!ntfs_attr_lookup(AT_FILE_NAME, NULL, 0, 0, 0, NULL, 0, ctx))
    {
        fn = (FILE_NAME_ATTR *) ((u8 *) ctx->attr + le16_to_cpu(ctx->attr->value_offset));
        if (MREF_LE(fn->parent_directory) == ni->mft_no)
        {
            /*
             * WARNING: We cheat here and obtain 2 attribute
             * search contexts for one inode (first we obtained
             * above, second will be obtained inside
             * ntfs_index_lookup), it's acceptable for library,
             * but will deadlock in the kernel.
             */
            index_ni = ni;
        }
        else if (dir_ni)
            index_ni = dir_ni;
        else index_ni = ntfs_inode_open(ni->vol, le64_to_cpu(fn->parent_directory));
        if (!index_ni)
        {
            if (!err) err = errno;
            ntfs_log_perror("Failed to open inode %lld with index",
                    (long long)le64_to_cpu(fn->parent_directory));
            continue;
        }
        ictx = ntfs_index_ctx_get(index_ni, NTFS_INDEX_I30, 4);
        if (!ictx)
        {
            if (!err) err = errno;
            ntfs_log_perror("Failed to get index ctx, inode %lld",
                    (long long)index_ni->mft_no);
            if ((ni != index_ni) && !dir_ni && ntfs_inode_close(index_ni) && !err) err = errno;
            continue;
        }
        if (ntfs_index_lookup(fn, sizeof(FILE_NAME_ATTR), ictx))
        {
            if (!err)
            {
                if (errno == ENOENT)
                    err = EIO;
                else err = errno;
            }
            ntfs_log_perror("Index lookup failed, inode %lld",
                    (long long)index_ni->mft_no);
            ntfs_index_ctx_put(ictx);
            if (ni != index_ni && ntfs_inode_close(index_ni) && !err) err = errno;
            continue;
        }
        /* Update flags and file size. */
        fnx = (FILE_NAME_ATTR *) ictx->data;
        fnx->file_attributes = (fnx->file_attributes & ~FILE_ATTR_VALID_FLAGS) | (ni->flags & FILE_ATTR_VALID_FLAGS);
        if (ni->mrec->flags & MFT_RECORD_IS_DIRECTORY)
            fnx->data_size = fnx->allocated_size = const_cpu_to_le64(0);
        else
        {
            fnx->allocated_size = cpu_to_sle64(ni->allocated_size);
            fnx->data_size = cpu_to_sle64(ni->data_size);
        }
        /* update or clear the reparse tag in the index */
        fnx->reparse_point_tag = reparse_tag;
        if (!test_nino_flag(ni, TimesSet))
        {
            fnx->creation_time = ni->creation_time;
            fnx->last_data_change_time = ni->last_data_change_time;
            fnx->last_mft_change_time = ni->last_mft_change_time;
            fnx->last_access_time = ni->last_access_time;
        }
        else
        {
            fnx->creation_time = fn->creation_time;
            fnx->last_data_change_time = fn->last_data_change_time;
            fnx->last_mft_change_time = fn->last_mft_change_time;
            fnx->last_access_time = fn->last_access_time;
        }
        ntfs_index_entry_mark_dirty(ictx);
        ntfs_index_ctx_put(ictx);
        if ((ni != index_ni) && !dir_ni && ntfs_inode_close(index_ni) && !err) err = errno;
    }
    /* Check for real error occurred. */
    if (errno != ENOENT)
    {
        err = errno;
        ntfs_log_perror("Attribute lookup failed, inode %lld",
                (long long)ni->mft_no);
        goto err_out;
    }
    ntfs_attr_put_search_ctx(ctx);
    if (err)
    {
        errno = err;
        return -1;
    }
    return 0;
    err_out: if (ctx) ntfs_attr_put_search_ctx(ctx);
    errno = err;
    return -1;
}

/**
 * ntfs_inode_sync - write the inode (and its dirty extents) to disk
 * @ni:		ntfs inode to write
 *
 * Write the inode @ni to disk as well as its dirty extent inodes if such
 * exist and @ni is a base inode. If @ni is an extent inode, only @ni is
 * written completely disregarding its base inode and any other extent inodes.
 *
 * For a base inode with dirty extent inodes if any writes fail for whatever
 * reason, the failing inode is skipped and the sync process is continued. At
 * the end the error condition that brought about the failure is returned. Thus
 * the smallest amount of data loss possible occurs.
 *
 * Return 0 on success or -1 on error with errno set to the error code.
 * The following error codes are defined:
 *	EINVAL	- Invalid arguments were passed to the function.
 *	EBUSY	- Inode and/or one of its extents is busy, try again later.
 *	EIO	- I/O error while writing the inode (or one of its extents).
 */
static int ntfs_inode_sync_in_dir(ntfs_inode *ni, ntfs_inode *dir_ni)
{
    int ret = 0;
    int err = 0;
    if (!ni)
    {
        errno = EINVAL;
        ntfs_log_error("Failed to sync NULL inode\n");
        return -1;
    }

    ntfs_log_enter("Entering for inode %lld\n", (long long)ni->mft_no);

    /* Update STANDARD_INFORMATION. */
    if ((ni->mrec->flags & MFT_RECORD_IN_USE) && ni->nr_extents != -1 && ntfs_inode_sync_standard_information(ni))
    {
        if (!err || errno == EIO)
        {
            err = errno;
            if (err != EIO) err = EBUSY;
        }
    }

    /* Update FILE_NAME's in the index. */
    if ((ni->mrec->flags & MFT_RECORD_IN_USE) && ni->nr_extents != -1 && NInoFileNameTestAndClearDirty(ni)
            && ntfs_inode_sync_file_name(ni, dir_ni))
    {
        if (!err || errno == EIO)
        {
            err = errno;
            if (err != EIO) err = EBUSY;
        }
        ntfs_log_perror("Failed to sync FILE_NAME (inode %lld)",
                (long long)ni->mft_no);
        NInoFileNameSetDirty(ni);
    }

    /* Write out attribute list from cache to disk. */
    if ((ni->mrec->flags & MFT_RECORD_IN_USE) && ni->nr_extents != -1 && NInoAttrList(ni)
            && NInoAttrListTestAndClearDirty(ni))
    {
        ntfs_attr *na;

        na = ntfs_attr_open(ni, AT_ATTRIBUTE_LIST, AT_UNNAMED, 0);
        if (!na)
        {
            if (!err || errno == EIO)
            {
                err = errno;
                if (err != EIO) err = EBUSY;
                ntfs_log_perror("Attribute list sync failed "
                        "(open, inode %lld)",
                        (long long)ni->mft_no);
            }
            NInoAttrListSetDirty(ni);
            goto sync_inode;
        }

        if (na->data_size == ni->attr_list_size)
        {
            if (ntfs_attr_pwrite(na, 0, ni->attr_list_size, ni->attr_list) != ni->attr_list_size)
            {
                if (!err || errno == EIO)
                {
                    err = errno;
                    if (err != EIO) err = EBUSY;
                    ntfs_log_perror("Attribute list sync "
                            "failed (write, inode %lld)",
                            (long long)ni->mft_no);
                }
                NInoAttrListSetDirty(ni);
            }
        }
        else
        {
            err = EIO;
            ntfs_log_error("Attribute list sync failed (bad size, "
                    "inode %lld)\n", (long long)ni->mft_no);
            NInoAttrListSetDirty(ni);
        }
        ntfs_attr_close(na);
    }

    sync_inode:
    /* Write this inode out to the $MFT (and $MFTMirr if applicable). */
    if (NInoTestAndClearDirty(ni))
    {
        if (ntfs_mft_record_write(ni->vol, ni->mft_no, ni->mrec))
        {
            if (!err || errno == EIO)
            {
                err = errno;
                if (err != EIO) err = EBUSY;
            }
            NInoSetDirty(ni);
            ntfs_log_perror("MFT record sync failed, inode %lld",
                    (long long)ni->mft_no);
        }
    }

    /* If this is a base inode with extents write all dirty extents, too. */
    if (ni->nr_extents > 0)
    {
        s32 i;

        for (i = 0; i < ni->nr_extents; ++i)
        {
            ntfs_inode *eni;

            eni = ni->extent_nis[i];
            if (!NInoTestAndClearDirty(eni)) continue;

            if (ntfs_mft_record_write(eni->vol, eni->mft_no, eni->mrec))
            {
                if (!err || errno == EIO)
                {
                    err = errno;
                    if (err != EIO) err = EBUSY;
                }
                NInoSetDirty(eni);
                ntfs_log_perror("Extent MFT record sync failed,"
                        " inode %lld/%lld",
                        (long long)ni->mft_no,
                        (long long)eni->mft_no);
            }
        }
    }

    if (err)
    {
        errno = err;
        ret = -1;
    }

    ntfs_log_leave("\n");
    return ret;
}

int ntfs_inode_sync(ntfs_inode *ni)
{
    return (ntfs_inode_sync_in_dir(ni, (ntfs_inode*) NULL));
}

/*
 *		Close an inode with an open parent inode
 */

int ntfs_inode_close_in_dir(ntfs_inode *ni, ntfs_inode *dir_ni)
{
    int res;

    res = ntfs_inode_sync_in_dir(ni, dir_ni);
    if (res)
    {
        if (errno != EIO) errno = EBUSY;
    }
    else res = ntfs_inode_close(ni);
    return (res);
}

/**
 * ntfs_inode_add_attrlist - add attribute list to inode and fill it
 * @ni: opened ntfs inode to which add attribute list
 *
 * Return 0 on success or -1 on error with errno set to the error code.
 * The following error codes are defined:
 *	EINVAL	- Invalid arguments were passed to the function.
 *	EEXIST	- Attribute list already exist.
 *	EIO	- Input/Ouput error occurred.
 *	ENOMEM	- Not enough memory to perform add.
 */
int ntfs_inode_add_attrlist(ntfs_inode *ni)
{
    int err;
    ntfs_attr_search_ctx *ctx;
    u8 *al = NULL, *aln;
    int al_len = 0;
    ATTR_LIST_ENTRY *ale = NULL;
    ntfs_attr *na;

    if (!ni)
    {
        errno = EINVAL;
        ntfs_log_perror("%s", __FUNCTION__);
        return -1;
    }

    ntfs_log_trace("inode %llu\n", (unsigned long long) ni->mft_no);

    if (NInoAttrList(ni) || ni->nr_extents)
    {
        errno = EEXIST;
        ntfs_log_perror("Inode already has attribute list");
        return -1;
    }

    /* Form attribute list. */
    ctx = ntfs_attr_get_search_ctx(ni, NULL);
    if (!ctx)
    {
        err = errno;
        goto err_out;
    }
    /* Walk through all attributes. */
    while (!ntfs_attr_lookup(AT_UNUSED, NULL, 0, 0, 0, NULL, 0, ctx))
    {

        int ale_size;

        if (ctx->attr->type == AT_ATTRIBUTE_LIST)
        {
            err = EIO;
            ntfs_log_perror("Attribute list already present");
            goto put_err_out;
        }

        ale_size = (sizeof(ATTR_LIST_ENTRY) + sizeof(ntfschar) * ctx->attr->name_length + 7) & ~7;
        al_len += ale_size;

        aln = realloc(al, al_len);
        if (!aln)
        {
            err = errno;
            ntfs_log_perror("Failed to realloc %d bytes", al_len);
            goto put_err_out;
        }
        ale = (ATTR_LIST_ENTRY *) (aln + ((u8 *) ale - al));
        al = aln;

        memset(ale, 0, ale_size);

        /* Add attribute to attribute list. */
        ale->type = ctx->attr->type;
        ale->length = cpu_to_le16((sizeof(ATTR_LIST_ENTRY) +
                        sizeof(ntfschar) * ctx->attr->name_length + 7) & ~7);
        ale->name_length = ctx->attr->name_length;
        ale->name_offset = (u8 *) ale->name - (u8 *) ale;
        if (ctx->attr->non_resident)
            ale->lowest_vcn = ctx->attr->lowest_vcn;
        else ale->lowest_vcn = 0;
        ale->mft_reference = MK_LE_MREF(ni->mft_no,
                le16_to_cpu(ni->mrec->sequence_number));
        ale->instance = ctx->attr->instance;
        memcpy(ale->name, (u8 *) ctx->attr + le16_to_cpu(ctx->attr->name_offset), ctx->attr->name_length
                * sizeof(ntfschar));
        ale = (ATTR_LIST_ENTRY *) (al + al_len);
    }
    /* Check for real error occurred. */
    if (errno != ENOENT)
    {
        err = errno;
        ntfs_log_perror("%s: Attribute lookup failed, inode %lld",
                __FUNCTION__, (long long)ni->mft_no);
        goto put_err_out;
    }

    /* Set in-memory attribute list. */
    ni->attr_list = al;
    ni->attr_list_size = al_len;
    NInoSetAttrList(ni);
    NInoAttrListSetDirty(ni);

    /* Free space if there is not enough it for $ATTRIBUTE_LIST. */
    if (le32_to_cpu(ni->mrec->bytes_allocated) - le32_to_cpu(ni->mrec->bytes_in_use)
            < offsetof(ATTR_RECORD, resident_end))
    {
        if (ntfs_inode_free_space(ni, offsetof(ATTR_RECORD, resident_end)))
        {
            /* Failed to free space. */
            err = errno;
            ntfs_log_perror("Failed to free space for attrlist");
            goto rollback;
        }
    }

    /* Add $ATTRIBUTE_LIST to mft record. */
    if (ntfs_resident_attr_record_add(ni, AT_ATTRIBUTE_LIST, NULL, 0, NULL, 0, 0) < 0)
    {
        err = errno;
        ntfs_log_perror("Couldn't add $ATTRIBUTE_LIST to MFT");
        goto rollback;
    }

    /* Resize it. */
    na = ntfs_attr_open(ni, AT_ATTRIBUTE_LIST, AT_UNNAMED, 0);
    if (!na)
    {
        err = errno;
        ntfs_log_perror("Failed to open just added $ATTRIBUTE_LIST");
        goto remove_attrlist_record;
    }
    if (ntfs_attr_truncate(na, al_len))
    {
        err = errno;
        ntfs_log_perror("Failed to resize just added $ATTRIBUTE_LIST");
        ntfs_attr_close(na);
        goto remove_attrlist_record;;
    }

    ntfs_attr_put_search_ctx(ctx);
    ntfs_attr_close(na);
    return 0;

    remove_attrlist_record:
    /* Prevent ntfs_attr_recorm_rm from freeing attribute list. */
    ni->attr_list = NULL;
    NInoClearAttrList(ni);
    /* Remove $ATTRIBUTE_LIST record. */
    ntfs_attr_reinit_search_ctx(ctx);
    if (!ntfs_attr_lookup(AT_ATTRIBUTE_LIST, NULL, 0, CASE_SENSITIVE, 0, NULL, 0, ctx))
    {
        if (ntfs_attr_record_rm(ctx)) ntfs_log_perror("Rollback failed to remove attrlist");
    }
    else
    ntfs_log_perror("Rollback failed to find attrlist");
    /* Setup back in-memory runlist. */
    ni->attr_list = al;
    ni->attr_list_size = al_len;
    NInoSetAttrList(ni);
    rollback:
    /*
     * Scan attribute list for attributes that placed not in the base MFT
     * record and move them to it.
     */
    ntfs_attr_reinit_search_ctx(ctx);
    ale = (ATTR_LIST_ENTRY*) al;
    while ((u8*) ale < al + al_len)
    {
        if (MREF_LE(ale->mft_reference) != ni->mft_no)
        {
            if (!ntfs_attr_lookup(ale->type, ale->name, ale->name_length, CASE_SENSITIVE,
                    sle64_to_cpu(ale->lowest_vcn), NULL, 0, ctx))
            {
                if (ntfs_attr_record_move_to(ctx, ni)) ntfs_log_perror("Rollback failed to "
                        "move attribute");
            }
            else
            ntfs_log_perror("Rollback failed to find attr");
            ntfs_attr_reinit_search_ctx(ctx);
        }
        ale = (ATTR_LIST_ENTRY*) ((u8*) ale + le16_to_cpu(ale->length));
    }
    /* Remove in-memory attribute list. */
    ni->attr_list = NULL;
    ni->attr_list_size = 0;
    NInoClearAttrList(ni);
    NInoAttrListClearDirty(ni);
    put_err_out: ntfs_attr_put_search_ctx(ctx);
    err_out: free(al);
    errno = err;
    return -1;
}

/**
 * ntfs_inode_free_space - free space in the MFT record of an inode
 * @ni:		ntfs inode in which MFT record needs more free space
 * @size:	amount of space needed to free
 *
 * Return 0 on success or -1 on error with errno set to the error code.
 */
int ntfs_inode_free_space(ntfs_inode *ni, int size)
{
    ntfs_attr_search_ctx *ctx;
    int freed;

    if (!ni || size < 0)
    {
        errno = EINVAL;
        ntfs_log_perror("%s: ni=%p size=%d", __FUNCTION__, ni, size);
        return -1;
    }

    ntfs_log_trace("Entering for inode %lld, size %d\n",
            (unsigned long long)ni->mft_no, size);

    freed = (le32_to_cpu(ni->mrec->bytes_allocated) - le32_to_cpu(ni->mrec->bytes_in_use));

    if (size <= freed) return 0;

    ctx = ntfs_attr_get_search_ctx(ni, NULL);
    if (!ctx) return -1;
    /*
     * $STANDARD_INFORMATION and $ATTRIBUTE_LIST must stay in the base MFT
     * record, so position search context on the first attribute after them.
     */
    if (ntfs_attr_position(AT_FILE_NAME, ctx)) goto put_err_out;

    while (1)
    {
        int record_size;
        /*
         * Check whether attribute is from different MFT record. If so,
         * find next, because we don't need such.
         */
        while (ctx->ntfs_ino->mft_no != ni->mft_no)
        {
            retry: if (ntfs_attr_position(AT_UNUSED, ctx)) goto put_err_out;
        }

        if (ntfs_inode_base(ctx->ntfs_ino)->mft_no == FILE_MFT && ctx->attr->type == AT_DATA) goto retry;

        if (ctx->attr->type == AT_INDEX_ROOT) goto retry;

        record_size = le32_to_cpu(ctx->attr->length);

        if (ntfs_attr_record_move_away(ctx, 0))
        {
            ntfs_log_perror("Failed to move out attribute #2");
            break;
        }
        freed += record_size;

        /* Check whether we are done. */
        if (size <= freed)
        {
            ntfs_attr_put_search_ctx(ctx);
            return 0;
        }
        /*
         * Reposition to first attribute after $STANDARD_INFORMATION
         * and $ATTRIBUTE_LIST instead of simply skipping this attribute
         * because in the case when we have got only in-memory attribute
         * list then ntfs_attr_lookup will fail when it tries to find
         * $ATTRIBUTE_LIST.
         */
        ntfs_attr_reinit_search_ctx(ctx);
        if (ntfs_attr_position(AT_FILE_NAME, ctx)) break;
    }
    put_err_out: ntfs_attr_put_search_ctx(ctx);
    if (errno == ENOSPC)
    ntfs_log_trace("No attributes left that could be moved out.\n");
    return -1;
}

/**
 * ntfs_inode_update_times - update selected time fields for ntfs inode
 * @ni:		ntfs inode for which update time fields
 * @mask:	select which time fields should be updated
 *
 * This function updates time fields to current time. Fields to update are
 * selected using @mask (see enum @ntfs_time_update_flags for posssible values).
 */
void ntfs_inode_update_times(ntfs_inode *ni, ntfs_time_update_flags mask)
{
    ntfs_time now;

    if (!ni)
    {
        ntfs_log_error("%s(): Invalid arguments.\n", __FUNCTION__);
        return;
    }

    if ((ni->mft_no < FILE_first_user && ni->mft_no != FILE_root) || NVolReadOnly(ni->vol) || !mask) return;

    now = ntfs_current_time();
    if (mask & NTFS_UPDATE_ATIME) ni->last_access_time = now;
    if (mask & NTFS_UPDATE_MTIME) ni->last_data_change_time = now;
    if (mask & NTFS_UPDATE_CTIME) ni->last_mft_change_time = now;

    NInoFileNameSetDirty(ni);
    NInoSetDirty(ni);
}

/**
 * ntfs_inode_badclus_bad - check for $Badclus:$Bad data attribute
 * @mft_no:		mft record number where @attr is present
 * @attr:		attribute record used to check for the $Bad attribute
 *
 * Check if the mft record given by @mft_no and @attr contains the bad sector
 * list. Please note that mft record numbers describing $Badclus extent inodes
 * will not match the current $Badclus:$Bad check.
 * 
 * On success return 1 if the file is $Badclus:$Bad, otherwise return 0.
 * On error return -1 with errno set to the error code.
 */
int ntfs_inode_badclus_bad(u64 mft_no, ATTR_RECORD *attr)
{
    int len, ret = 0;
    ntfschar *ustr;

    if (!attr)
    {
        ntfs_log_error("Invalid argument.\n");
        errno = EINVAL;
        return -1;
    }

    if (mft_no != FILE_BadClus) return 0;

    if (attr->type != AT_DATA) return 0;

    if ((ustr = ntfs_str2ucs("$Bad", &len)) == NULL)
    {
        ntfs_log_perror("Couldn't convert '$Bad' to Unicode");
        return -1;
    }

    if (ustr && ntfs_names_are_equal(ustr, len, (ntfschar *) ((u8 *) attr + le16_to_cpu(attr->name_offset)),
            attr->name_length, 0, NULL, 0)) ret = 1;

    ntfs_ucsfree(ustr);

    return ret;
}

#ifdef HAVE_SETXATTR	/* extended attributes interface required */

/*
 *		Get high precision NTFS times
 *
 *	They are returned in following order : create, update, access, change
 *	provided they fit in requested size.
 *
 *	Returns the modified size if successfull (or 32 if buffer size is null)
 *		-errno if failed
 */

int ntfs_inode_get_times(ntfs_inode *ni, char *value, size_t size)
{
    ntfs_attr_search_ctx *ctx;
    STANDARD_INFORMATION *std_info;
    u64 *times;
    int ret;

    ret = 0;
    ctx = ntfs_attr_get_search_ctx(ni, NULL);
    if (ctx)
    {
        if (ntfs_attr_lookup(AT_STANDARD_INFORMATION, AT_UNNAMED,
                        0, CASE_SENSITIVE, 0, NULL, 0, ctx))
        {
            ntfs_log_perror("Failed to get standard info (inode %lld)",
                    (long long)ni->mft_no);
        }
        else
        {
            std_info = (STANDARD_INFORMATION *)((u8 *)ctx->attr +
                    le16_to_cpu(ctx->attr->value_offset));
            if (value && (size >= 8))
            {
                times = (u64*)value;
                times[0] = le64_to_cpu(std_info->creation_time);
                ret = 8;
                if (size >= 16)
                {
                    times[1] = le64_to_cpu(std_info->last_data_change_time);
                    ret = 16;
                }
                if (size >= 24)
                {
                    times[2] = le64_to_cpu(std_info->last_access_time);
                    ret = 24;
                }
                if (size >= 32)
                {
                    times[3] = le64_to_cpu(std_info->last_mft_change_time);
                    ret = 32;
                }
            }
            else
            if (!size)
            ret = 32;
            else
            ret = -ERANGE;
        }
        ntfs_attr_put_search_ctx(ctx);
    }
    return (ret ? ret : -errno);
}

/*
 *		Set high precision NTFS times
 *
 *	They are expected in this order : create, update, access
 *	provided they are present in input. The change time is set to
 *	current time.
 *
 *	The times are inserted directly in the standard_information and
 *	file names attributes to avoid manipulating low precision times
 *
 *	Returns 0 if success
 *		-1 if there were an error (described by errno)
 */

int ntfs_inode_set_times(ntfs_inode *ni, const char *value, size_t size,
        int flags)
{
    ntfs_attr_search_ctx *ctx;
    STANDARD_INFORMATION *std_info;
    FILE_NAME_ATTR *fn;
    const u64 *times;
    ntfs_time now;
    int cnt;
    int ret;

    ret = -1;
    if ((size >= 8) && !(flags & XATTR_CREATE))
    {
        times = (const u64*)value;
        now = ntfs_current_time();
        /* update the standard information attribute */
        ctx = ntfs_attr_get_search_ctx(ni, NULL);
        if (ctx)
        {
            if (ntfs_attr_lookup(AT_STANDARD_INFORMATION,
                            AT_UNNAMED, 0, CASE_SENSITIVE,
                            0, NULL, 0, ctx))
            {
                ntfs_log_perror("Failed to get standard info (inode %lld)",
                        (long long)ni->mft_no);
            }
            else
            {
                std_info = (STANDARD_INFORMATION *)((u8 *)ctx->attr +
                        le16_to_cpu(ctx->attr->value_offset));
                /*
                 * Mark times set to avoid overwriting
                 * them when the inode is closed.
                 * The inode structure must also be updated
                 * (with loss of precision) because of cacheing.
                 * TODO : use NTFS precision in inode, and
                 * return sub-second times in getattr()
                 */
                set_nino_flag(ni, TimesSet);
                std_info->creation_time = cpu_to_le64(times[0]);
                ni->creation_time
                = std_info->creation_time;
                if (size >= 16)
                {
                    std_info->last_data_change_time = cpu_to_le64(times[1]);
                    ni->last_data_change_time
                    = std_info->last_data_change_time;
                }
                if (size >= 24)
                {
                    std_info->last_access_time = cpu_to_le64(times[2]);
                    ni->last_access_time
                    = std_info->last_access_time;
                }
                std_info->last_mft_change_time = now;
                ni->last_mft_change_time = now;
                ntfs_inode_mark_dirty(ctx->ntfs_ino);
                NInoFileNameSetDirty(ni);

                /* update the file names attributes */
                ntfs_attr_reinit_search_ctx(ctx);
                cnt = 0;
                while (!ntfs_attr_lookup(AT_FILE_NAME,
                                AT_UNNAMED, 0, CASE_SENSITIVE,
                                0, NULL, 0, ctx))
                {
                    fn = (FILE_NAME_ATTR*)((u8 *)ctx->attr +
                            le16_to_cpu(ctx->attr->value_offset));
                    fn->creation_time
                    = cpu_to_le64(times[0]);
                    if (size >= 16)
                    fn->last_data_change_time
                    = cpu_to_le64(times[1]);
                    if (size >= 24)
                    fn->last_access_time
                    = cpu_to_le64(times[2]);
                    fn->last_mft_change_time = now;
                    cnt++;
                }
                if (cnt)
                ret = 0;
                else
                {
                    ntfs_log_perror("Failed to get file names (inode %lld)",
                            (long long)ni->mft_no);
                }
            }
            ntfs_attr_put_search_ctx(ctx);
        }
    }
    else
    if (size < 8)
    errno = ERANGE;
    else
    errno = EEXIST;
    return (ret);
}

#endif /* HAVE_SETXATTR */