xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

NTFS: Add support for sparse files which have a compression unit of 0.

Browse Source 
Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
This commit is contained in:
Anton Altaparmakov
2006-03-23 15:53:03 +00:00
parent 949763b2b8
commit a0646a1f04
4 changed files with 75 additions and 38 deletions
Download Patch File Download Diff File Expand all files Collapse all files

68
fs/ntfs/inode.c
View File

@@ -1,7 +1,7 @@
/**
* inode.c - NTFS kernel inode handling. Part of the Linux-NTFS project.
*
* Copyright (c) 2001-2005 Anton Altaparmakov
* Copyright (c) 2001-2006 Anton Altaparmakov
*
* 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
@@ -24,8 +24,10 @@
#include <linux/smp_lock.h>
#include <linux/quotaops.h>
#include <linux/mount.h>
#include <linux/mutex.h>
#include "aops.h"
#include "attrib.h"
#include "dir.h"
#include "debug.h"
#include "inode.h"
@@ -1064,10 +1066,10 @@ skip_large_dir_stuff:
if (a->non_resident) {
NInoSetNonResident(ni);
if (NInoCompressed(ni) || NInoSparse(ni)) {
if (a->data.non_resident.compression_unit !=
4) {
if (NInoCompressed(ni) && a->data.non_resident.
compression_unit != 4) {
ntfs_error(vi->i_sb, "Found "
"nonstandard "
"non-standard "
"compression unit (%u "
"instead of 4). "
"Cannot handle this.",
@@ -1076,16 +1078,26 @@ skip_large_dir_stuff:
err = -EOPNOTSUPP;
goto unm_err_out;
}
ni->itype.compressed.block_clusters = 1U <<
a->data.non_resident.
compression_unit;
ni->itype.compressed.block_size = 1U << (
a->data.non_resident.
compression_unit +
vol->cluster_size_bits);
ni->itype.compressed.block_size_bits = ffs(
ni->itype.compressed.
block_size) - 1;
if (a->data.non_resident.compression_unit) {
ni->itype.compressed.block_size = 1U <<
(a->data.non_resident.
compression_unit +
vol->cluster_size_bits);
ni->itype.compressed.block_size_bits =
ffs(ni->itype.
compressed.
block_size) - 1;
ni->itype.compressed.block_clusters =
1U << a->data.
non_resident.
compression_unit;
} else {
ni->itype.compressed.block_size = 0;
ni->itype.compressed.block_size_bits =
0;
ni->itype.compressed.block_clusters =
0;
}
ni->itype.compressed.size = sle64_to_cpu(
a->data.non_resident.
compressed_size);
@@ -1338,8 +1350,9 @@ static int ntfs_read_locked_attr_inode(struct inode *base_vi, struct inode *vi)
goto unm_err_out;
}
if (NInoCompressed(ni) || NInoSparse(ni)) {
if (a->data.non_resident.compression_unit != 4) {
ntfs_error(vi->i_sb, "Found nonstandard "
if (NInoCompressed(ni) && a->data.non_resident.
compression_unit != 4) {
ntfs_error(vi->i_sb, "Found non-standard "
"compression unit (%u instead "
"of 4). Cannot handle this.",
a->data.non_resident.
@@ -1347,13 +1360,22 @@ static int ntfs_read_locked_attr_inode(struct inode *base_vi, struct inode *vi)
err = -EOPNOTSUPP;
goto unm_err_out;
}
ni->itype.compressed.block_clusters = 1U <<
a->data.non_resident.compression_unit;
ni->itype.compressed.block_size = 1U << (
a->data.non_resident.compression_unit +
vol->cluster_size_bits);
ni->itype.compressed.block_size_bits = ffs(
ni->itype.compressed.block_size) - 1;
if (a->data.non_resident.compression_unit) {
ni->itype.compressed.block_size = 1U <<
(a->data.non_resident.
compression_unit +
vol->cluster_size_bits);
ni->itype.compressed.block_size_bits =
ffs(ni->itype.compressed.
block_size) - 1;
ni->itype.compressed.block_clusters = 1U <<
a->data.non_resident.
compression_unit;
} else {
ni->itype.compressed.block_size = 0;
ni->itype.compressed.block_size_bits = 0;
ni->itype.compressed.block_clusters = 0;
}
ni->itype.compressed.size = sle64_to_cpu(
a->data.non_resident.compressed_size);
}