/**
* 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
#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"
#include "xattrs.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;
item.inum = MREF(mref);
item.ni = (ntfs_inode*)NULL;
item.pathname = (const char*)NULL;
item.varsize = 0;
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);
}
if (!ni) {
debug_double_inode(item.inum, 0);
}
#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 leMFT_REF mref)
{
u64 mft_no = MREF_LE(mref);
VCN extent_vcn;
runlist_element *rl;
ntfs_volume *vol;
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);
if (!base_ni->mft_no) {
/*
* When getting extents of MFT, we must be sure
* they are in the MFT part which has already
* been mapped, otherwise we fall into an endless
* recursion.
* Situations have been met where extents locations
* are described in themselves.
* This is a severe error which chkdsk cannot fix.
*/
vol = base_ni->vol;
extent_vcn = mft_no << vol->mft_record_size_bits
>> vol->cluster_size_bits;
rl = vol->mft_na->rl;
if (rl) {
while (rl->length
&& ((rl->vcn + rl->length) <= extent_vcn))
rl++;
}
if (!rl || (rl->lcn < 0)) {
ntfs_log_error("MFT is corrupt, cannot read"
" its unmapped extent record %lld\n",
(long long)mft_no);
ntfs_log_error("Note : chkdsk cannot fix this,"
" try ntfsfix\n");
errno = EIO;
ni = (ntfs_inode*)NULL;
goto out;
}
}
/* 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 = const_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_sle64(0);
else {
fnx->allocated_size = cpu_to_sle64(ni->allocated_size);
fnx->data_size = cpu_to_sle64(ni->data_size);
/*
* The file name record has also to be fixed if some
* attribute update implied the unnamed data to be
* made non-resident
*/
fn->allocated_size = fnx->allocated_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 = const_cpu_to_sle64(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, const_cpu_to_le16(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;
}
/*
* 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] = sle64_to_cpu(std_info->creation_time);
ret = 8;
if (size >= 16) {
times[1] = sle64_to_cpu(std_info->last_data_change_time);
ret = 16;
}
if (size >= 24) {
times[2] = sle64_to_cpu(std_info->last_access_time);
ret = 24;
}
if (size >= 32) {
times[3] = sle64_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_sle64(times[0]);
ni->creation_time
= std_info->creation_time;
if (size >= 16) {
std_info->last_data_change_time = cpu_to_sle64(times[1]);
ni->last_data_change_time
= std_info->last_data_change_time;
}
if (size >= 24) {
std_info->last_access_time = cpu_to_sle64(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_sle64(times[0]);
if (size >= 16)
fn->last_data_change_time
= cpu_to_sle64(times[1]);
if (size >= 24)
fn->last_access_time
= cpu_to_sle64(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);
}
↑ V774 The 'al' pointer was used after the memory was reallocated.