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-rw-r--r--fs/ntfs/ChangeLog4
-rw-r--r--fs/ntfs/inode.c172
-rw-r--r--fs/ntfs/layout.h15
3 files changed, 94 insertions, 97 deletions
diff --git a/fs/ntfs/ChangeLog b/fs/ntfs/ChangeLog
index cf21e0571b68..cd348f0b90e5 100644
--- a/fs/ntfs/ChangeLog
+++ b/fs/ntfs/ChangeLog
@@ -84,6 +84,10 @@ ToDo/Notes:
- Make fs/ntfs/namei.c::ntfs_get_{parent,dentry} static and move the
definition of ntfs_export_ops from fs/ntfs/super.c to namei.c. Also,
declare ntfs_export_ops in fs/ntfs/ntfs.h.
+ - Correct sparse file handling. The compressed values need to be
+ checked and set in the ntfs inode as done for compressed files and
+ the compressed size needs to be used for vfs inode->i_blocks instead
+ of the allocated size, again, as done for compressed files.
2.1.22 - Many bug and race fixes and error handling improvements.
diff --git a/fs/ntfs/inode.c b/fs/ntfs/inode.c
index 7ae647c640bb..f7bee8d014d9 100644
--- a/fs/ntfs/inode.c
+++ b/fs/ntfs/inode.c
@@ -1016,26 +1016,31 @@ skip_large_dir_stuff:
/* Setup the state. */
if (a->non_resident) {
NInoSetNonResident(ni);
- if (a->flags & ATTR_COMPRESSION_MASK) {
- NInoSetCompressed(ni);
- if (vol->cluster_size > 4096) {
- ntfs_error(vi->i_sb, "Found "
- "compressed data but "
- "compression is disabled due "
- "to cluster size (%i) > 4kiB.",
- vol->cluster_size);
- goto unm_err_out;
- }
- if ((a->flags & ATTR_COMPRESSION_MASK)
- != ATTR_IS_COMPRESSED) {
- ntfs_error(vi->i_sb, "Found "
- "unknown compression method or "
- "corrupt file.");
- goto unm_err_out;
+ if (a->flags & (ATTR_COMPRESSION_MASK |
+ ATTR_IS_SPARSE)) {
+ if (a->flags & ATTR_COMPRESSION_MASK) {
+ NInoSetCompressed(ni);
+ if (vol->cluster_size > 4096) {
+ ntfs_error(vi->i_sb, "Found "
+ "compressed data but "
+ "compression is "
+ "disabled due to "
+ "cluster size (%i) > "
+ "4kiB.",
+ vol->cluster_size);
+ goto unm_err_out;
+ }
+ if ((a->flags & ATTR_COMPRESSION_MASK)
+ != ATTR_IS_COMPRESSED) {
+ ntfs_error(vi->i_sb, "Found "
+ "unknown compression "
+ "method or corrupt "
+ "file.");
+ goto unm_err_out;
+ }
}
- ni->itype.compressed.block_clusters = 1U <<
- a->data.non_resident.
- compression_unit;
+ if (a->flags & ATTR_IS_SPARSE)
+ NInoSetSparse(ni);
if (a->data.non_resident.compression_unit !=
4) {
ntfs_error(vi->i_sb, "Found "
@@ -1047,12 +1052,19 @@ 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;
+ ni->itype.compressed.
+ block_size) - 1;
+ ni->itype.compressed.size = sle64_to_cpu(
+ a->data.non_resident.
+ compressed_size);
}
if (a->flags & ATTR_IS_ENCRYPTED) {
if (a->flags & ATTR_COMPRESSION_MASK) {
@@ -1062,27 +1074,19 @@ skip_large_dir_stuff:
}
NInoSetEncrypted(ni);
}
- if (a->flags & ATTR_IS_SPARSE)
- NInoSetSparse(ni);
if (a->data.non_resident.lowest_vcn) {
ntfs_error(vi->i_sb, "First extent of $DATA "
"attribute has non zero "
"lowest_vcn.");
goto unm_err_out;
}
- /* Setup all the sizes. */
vi->i_size = sle64_to_cpu(
a->data.non_resident.data_size);
ni->initialized_size = sle64_to_cpu(
a->data.non_resident.initialized_size);
ni->allocated_size = sle64_to_cpu(
a->data.non_resident.allocated_size);
- if (NInoCompressed(ni))
- ni->itype.compressed.size = sle64_to_cpu(
- a->data.non_resident.
- compressed_size);
} else { /* Resident attribute. */
- /* Setup all the sizes. */
vi->i_size = ni->initialized_size = le32_to_cpu(
a->data.resident.value_length);
ni->allocated_size = le32_to_cpu(a->length) -
@@ -1120,11 +1124,10 @@ no_data_attr_special_case:
* sizes of all non-resident attributes present to give us the Linux
* correct size that should go into i_blocks (after division by 512).
*/
- if (S_ISDIR(vi->i_mode) || !NInoCompressed(ni))
- vi->i_blocks = ni->allocated_size >> 9;
- else
+ if (S_ISREG(vi->i_mode) && (NInoCompressed(ni) || NInoSparse(ni)))
vi->i_blocks = ni->itype.compressed.size >> 9;
-
+ else
+ vi->i_blocks = ni->allocated_size >> 9;
ntfs_debug("Done.");
return 0;
@@ -1226,14 +1229,13 @@ static int ntfs_read_locked_attr_inode(struct inode *base_vi, struct inode *vi)
"linux-ntfs-dev@lists.sourceforge.net");
goto unm_err_out;
}
- /* Resident attribute. Setup all the sizes. */
vi->i_size = ni->initialized_size = le32_to_cpu(
a->data.resident.value_length);
ni->allocated_size = le32_to_cpu(a->length) -
le16_to_cpu(a->data.resident.value_offset);
if (vi->i_size > ni->allocated_size) {
- ntfs_error(vi->i_sb, "Resident data attribute is "
- "corrupt (size exceeds allocation).");
+ ntfs_error(vi->i_sb, "Resident attribute is corrupt "
+ "(size exceeds allocation).");
goto unm_err_out;
}
} else {
@@ -1249,43 +1251,50 @@ static int ntfs_read_locked_attr_inode(struct inode *base_vi, struct inode *vi)
"the mapping pairs array.");
goto unm_err_out;
}
- if (a->flags & ATTR_COMPRESSION_MASK) {
+ if (a->flags & (ATTR_COMPRESSION_MASK | ATTR_IS_SPARSE)) {
+ if (a->flags & ATTR_COMPRESSION_MASK) {
+ NInoSetCompressed(ni);
+ if ((ni->type != AT_DATA) || (ni->type ==
+ AT_DATA && ni->name_len)) {
+ ntfs_error(vi->i_sb, "Found compressed "
+ "non-data or named "
+ "data attribute. "
+ "Please report you "
+ "saw this message to "
+ "linux-ntfs-dev@lists."
+ "sourceforge.net");
+ goto unm_err_out;
+ }
+ if (vol->cluster_size > 4096) {
+ ntfs_error(vi->i_sb, "Found compressed "
+ "attribute but "
+ "compression is "
+ "disabled due to "
+ "cluster size (%i) > "
+ "4kiB.",
+ vol->cluster_size);
+ goto unm_err_out;
+ }
+ if ((a->flags & ATTR_COMPRESSION_MASK) !=
+ ATTR_IS_COMPRESSED) {
+ ntfs_error(vi->i_sb, "Found unknown "
+ "compression method.");
+ goto unm_err_out;
+ }
+ }
if (NInoMstProtected(ni)) {
ntfs_error(vi->i_sb, "Found mst protected "
"attribute but the attribute "
- "is compressed. Please report "
- "you saw this message to "
- "linux-ntfs-dev@lists."
- "sourceforge.net");
- goto unm_err_out;
- }
- NInoSetCompressed(ni);
- if ((ni->type != AT_DATA) || (ni->type == AT_DATA &&
- ni->name_len)) {
- ntfs_error(vi->i_sb, "Found compressed "
- "non-data or named data "
- "attribute. Please report "
- "you saw this message to "
+ "is %s. Please report you "
+ "saw this message to "
"linux-ntfs-dev@lists."
- "sourceforge.net");
- goto unm_err_out;
- }
- if (vol->cluster_size > 4096) {
- ntfs_error(vi->i_sb, "Found compressed "
- "attribute but compression is "
- "disabled due to cluster size "
- "(%i) > 4kiB.",
- vol->cluster_size);
- goto unm_err_out;
- }
- if ((a->flags & ATTR_COMPRESSION_MASK) !=
- ATTR_IS_COMPRESSED) {
- ntfs_error(vi->i_sb, "Found unknown "
- "compression method.");
+ "sourceforge.net",
+ NInoCompressed(ni) ?
+ "compressed" : "sparse");
goto unm_err_out;
}
- ni->itype.compressed.block_clusters = 1U <<
- a->data.non_resident.compression_unit;
+ if (a->flags & ATTR_IS_SPARSE)
+ NInoSetSparse(ni);
if (a->data.non_resident.compression_unit != 4) {
ntfs_error(vi->i_sb, "Found nonstandard "
"compression unit (%u instead "
@@ -1295,11 +1304,15 @@ 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;
+ ni->itype.compressed.size = sle64_to_cpu(
+ a->data.non_resident.compressed_size);
}
if (a->flags & ATTR_IS_ENCRYPTED) {
if (a->flags & ATTR_COMPRESSION_MASK) {
@@ -1318,34 +1331,17 @@ static int ntfs_read_locked_attr_inode(struct inode *base_vi, struct inode *vi)
}
NInoSetEncrypted(ni);
}
- if (a->flags & ATTR_IS_SPARSE) {
- if (NInoMstProtected(ni)) {
- ntfs_error(vi->i_sb, "Found mst protected "
- "attribute but the attribute "
- "is sparse. Please report "
- "you saw this message to "
- "linux-ntfs-dev@lists."
- "sourceforge.net");
- goto unm_err_out;
- }
- NInoSetSparse(ni);
- }
if (a->data.non_resident.lowest_vcn) {
ntfs_error(vi->i_sb, "First extent of attribute has "
"non-zero lowest_vcn.");
goto unm_err_out;
}
- /* Setup all the sizes. */
vi->i_size = sle64_to_cpu(a->data.non_resident.data_size);
ni->initialized_size = sle64_to_cpu(
a->data.non_resident.initialized_size);
ni->allocated_size = sle64_to_cpu(
a->data.non_resident.allocated_size);
- if (NInoCompressed(ni))
- ni->itype.compressed.size = sle64_to_cpu(
- a->data.non_resident.compressed_size);
}
-
/* Setup the operations for this attribute inode. */
vi->i_op = NULL;
vi->i_fop = NULL;
@@ -1353,12 +1349,10 @@ static int ntfs_read_locked_attr_inode(struct inode *base_vi, struct inode *vi)
vi->i_mapping->a_ops = &ntfs_mst_aops;
else
vi->i_mapping->a_ops = &ntfs_aops;
-
- if (!NInoCompressed(ni))
- vi->i_blocks = ni->allocated_size >> 9;
- else
+ if (NInoCompressed(ni) || NInoSparse(ni))
vi->i_blocks = ni->itype.compressed.size >> 9;
-
+ else
+ vi->i_blocks = ni->allocated_size >> 9;
/*
* Make sure the base inode doesn't go away and attach it to the
* attribute inode.
@@ -1643,7 +1637,6 @@ skip_large_index_stuff:
vi->i_fop = NULL;
vi->i_mapping->a_ops = &ntfs_mst_aops;
vi->i_blocks = ni->allocated_size >> 9;
-
/*
* Make sure the base inode doesn't go away and attach it to the
* index inode.
@@ -1728,7 +1721,6 @@ int ntfs_read_inode_mount(struct inode *vi)
ni->type = AT_DATA;
ni->name = NULL;
ni->name_len = 0;
-
/*
* This sets up our little cheat allowing us to reuse the async read io
* completion handler for directories.
diff --git a/fs/ntfs/layout.h b/fs/ntfs/layout.h
index 7cb8806d4559..8d1f1326612f 100644
--- a/fs/ntfs/layout.h
+++ b/fs/ntfs/layout.h
@@ -749,10 +749,11 @@ typedef struct {
record header aligned to 8-byte boundary. */
/* 34*/ u8 compression_unit; /* The compression unit expressed
as the log to the base 2 of the number of
- clusters in a compression unit. 0 means not
- compressed. (This effectively limits the
+ clusters in a compression unit. 0 means not
+ compressed. (This effectively limits the
compression unit size to be a power of two
- clusters.) WinNT4 only uses a value of 4. */
+ clusters.) WinNT4 only uses a value of 4.
+ Sparse files also have this set to 4. */
/* 35*/ u8 reserved[5]; /* Align to 8-byte boundary. */
/* The sizes below are only used when lowest_vcn is zero, as otherwise it would
be difficult to keep them up-to-date.*/
@@ -772,10 +773,10 @@ typedef struct {
data_size. */
/* sizeof(uncompressed attr) = 64*/
/* 64*/ sle64 compressed_size; /* Byte size of the attribute
- value after compression. Only present when
- compressed. Always is a multiple of the
- cluster size. Represents the actual amount of
- disk space being used on the disk. */
+ value after compression. Only present when
+ compressed or sparse. Always is a multiple of
+ the cluster size. Represents the actual amount
+ of disk space being used on the disk. */
/* sizeof(compressed attr) = 72*/
} __attribute__ ((__packed__)) non_resident;
} __attribute__ ((__packed__)) data;
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