#include <linux/quotaops.h>
#include <linux/mount.h>
-#include "ntfs.h"
+#include "aops.h"
#include "dir.h"
+#include "debug.h"
#include "inode.h"
#include "attrib.h"
+#include "malloc.h"
+#include "mft.h"
#include "time.h"
+#include "ntfs.h"
/**
* ntfs_test_inode - compare two (possibly fake) inodes for equality
return NULL;
}
-void ntfs_destroy_extent_inode(ntfs_inode *ni)
+static void ntfs_destroy_extent_inode(ntfs_inode *ni)
{
ntfs_debug("Entering.");
BUG_ON(ni->page);
*
* Return zero on success and -ENOMEM on error.
*/
-static void __ntfs_init_inode(struct super_block *sb, ntfs_inode *ni)
+void __ntfs_init_inode(struct super_block *sb, ntfs_inode *ni)
{
ntfs_debug("Entering.");
ni->initialized_size = ni->allocated_size = 0;
ni->seq_no = 0;
atomic_set(&ni->count, 1);
ni->vol = NTFS_SB(sb);
- init_runlist(&ni->runlist);
+ ntfs_init_runlist(&ni->runlist);
init_MUTEX(&ni->mrec_lock);
ni->page = NULL;
ni->page_ofs = 0;
ni->attr_list_size = 0;
ni->attr_list = NULL;
- init_runlist(&ni->attr_list_rl);
+ ntfs_init_runlist(&ni->attr_list_rl);
ni->itype.index.bmp_ino = NULL;
ni->itype.index.block_size = 0;
ni->itype.index.vcn_size = 0;
init_MUTEX(&ni->extent_lock);
ni->nr_extents = 0;
ni->ext.base_ntfs_ino = NULL;
- return;
-}
-
-static inline void ntfs_init_big_inode(struct inode *vi)
-{
- ntfs_inode *ni = NTFS_I(vi);
-
- ntfs_debug("Entering.");
- __ntfs_init_inode(vi->i_sb, ni);
- ni->mft_no = vi->i_ino;
- return;
}
inline ntfs_inode *ntfs_new_extent_inode(struct super_block *sb,
}
if (!(m->flags & MFT_RECORD_IN_USE)) {
- ntfs_error(vi->i_sb, "Inode is not in use! You should "
- "run chkdsk.");
+ ntfs_error(vi->i_sb, "Inode is not in use!");
goto unm_err_out;
}
if (m->base_mft_record) {
- ntfs_error(vi->i_sb, "Inode is an extent inode! You should "
- "run chkdsk.");
+ ntfs_error(vi->i_sb, "Inode is an extent inode!");
goto unm_err_out;
}
* Also if not a directory, it could be something else, rather than
* a regular file. But again, will do for now.
*/
+ /* Everyone gets all permissions. */
+ vi->i_mode |= S_IRWXUGO;
+ /* If read-only, noone gets write permissions. */
+ if (IS_RDONLY(vi))
+ vi->i_mode &= ~S_IWUGO;
if (m->flags & MFT_RECORD_IS_DIRECTORY) {
vi->i_mode |= S_IFDIR;
+ /*
+ * Apply the directory permissions mask set in the mount
+ * options.
+ */
+ vi->i_mode &= ~vol->dmask;
/* Things break without this kludge! */
if (vi->i_nlink > 1)
vi->i_nlink = 1;
- } else
+ } else {
vi->i_mode |= S_IFREG;
-
+ /* Apply the file permissions mask set in the mount options. */
+ vi->i_mode &= ~vol->fmask;
+ }
/*
* Find the standard information attribute in the mft record. At this
* stage we haven't setup the attribute list stuff yet, so this could
if (err) {
if (unlikely(err != -ENOENT)) {
ntfs_error(vi->i_sb, "Failed to lookup attribute list "
- "attribute. You should run chkdsk.");
+ "attribute.");
goto unm_err_out;
}
} else /* if (!err) */ {
ctx->attr->flags & ATTR_COMPRESSION_MASK ||
ctx->attr->flags & ATTR_IS_SPARSE) {
ntfs_error(vi->i_sb, "Attribute list attribute is "
- "compressed/encrypted/sparse. Not "
- "allowed. Corrupt inode. You should "
- "run chkdsk.");
+ "compressed/encrypted/sparse.");
goto unm_err_out;
}
/* Now allocate memory for the attribute list. */
NInoSetAttrListNonResident(ni);
if (ctx->attr->data.non_resident.lowest_vcn) {
ntfs_error(vi->i_sb, "Attribute list has non "
- "zero lowest_vcn. Inode is "
- "corrupt. You should run "
- "chkdsk.");
+ "zero lowest_vcn.");
goto unm_err_out;
}
/*
* Setup the runlist. No need for locking as we have
* exclusive access to the inode at this time.
*/
- ni->attr_list_rl.rl = decompress_mapping_pairs(vol,
+ ni->attr_list_rl.rl = ntfs_mapping_pairs_decompress(vol,
ctx->attr, NULL);
if (IS_ERR(ni->attr_list_rl.rl)) {
err = PTR_ERR(ni->attr_list_rl.rl);
ni->attr_list_rl.rl = NULL;
ntfs_error(vi->i_sb, "Mapping pairs "
- "decompression failed with "
- "error code %i. Corrupt "
- "attribute list in inode.",
- -err);
+ "decompression failed.");
goto unm_err_out;
}
/* Now load the attribute list. */
goto unm_err_out;
}
/* Set up the state. */
- if (ctx->attr->non_resident) {
- ntfs_error(vi->i_sb, "$INDEX_ROOT attribute is "
- "not resident. Not allowed.");
+ if (unlikely(ctx->attr->non_resident)) {
+ ntfs_error(vol->sb, "$INDEX_ROOT attribute is not "
+ "resident.");
+ goto unm_err_out;
+ }
+ /* Ensure the attribute name is placed before the value. */
+ if (unlikely(ctx->attr->name_length &&
+ (le16_to_cpu(ctx->attr->name_offset) >=
+ le16_to_cpu(ctx->attr->data.resident.
+ value_offset)))) {
+ ntfs_error(vol->sb, "$INDEX_ROOT attribute name is "
+ "placed after the attribute value.");
goto unm_err_out;
}
/*
if (ctx->attr->flags & ATTR_IS_ENCRYPTED) {
if (ctx->attr->flags & ATTR_COMPRESSION_MASK) {
ntfs_error(vi->i_sb, "Found encrypted and "
- "compressed attribute. Not "
- "allowed.");
+ "compressed attribute.");
goto unm_err_out;
}
NInoSetEncrypted(ni);
}
if (ir->type != AT_FILE_NAME) {
ntfs_error(vi->i_sb, "Indexed attribute is not "
- "$FILE_NAME. Not allowed.");
+ "$FILE_NAME.");
goto unm_err_out;
}
if (ir->collation_rule != COLLATION_FILE_NAME) {
ntfs_error(vi->i_sb, "Index collation rule is not "
- "COLLATION_FILE_NAME. Not allowed.");
+ "COLLATION_FILE_NAME.");
goto unm_err_out;
}
ni->itype.index.collation_rule = ir->collation_rule;
if (ni->itype.index.block_size > PAGE_CACHE_SIZE) {
ntfs_error(vi->i_sb, "Index block size (%u) > "
"PAGE_CACHE_SIZE (%ld) is not "
- "supported. Sorry.",
+ "supported. Sorry.",
ni->itype.index.block_size,
PAGE_CACHE_SIZE);
err = -EOPNOTSUPP;
if (ni->itype.index.block_size < NTFS_BLOCK_SIZE) {
ntfs_error(vi->i_sb, "Index block size (%u) < "
"NTFS_BLOCK_SIZE (%i) is not "
- "supported. Sorry.",
+ "supported. Sorry.",
ni->itype.index.block_size,
NTFS_BLOCK_SIZE);
err = -EOPNOTSUPP;
if (err == -ENOENT)
ntfs_error(vi->i_sb, "$INDEX_ALLOCATION "
"attribute is not present but "
- "$INDEX_ROOT indicated it "
- "is.");
+ "$INDEX_ROOT indicated it is.");
else
ntfs_error(vi->i_sb, "Failed to lookup "
"$INDEX_ALLOCATION "
"is resident.");
goto unm_err_out;
}
+ /*
+ * Ensure the attribute name is placed before the mapping pairs
+ * array.
+ */
+ if (unlikely(ctx->attr->name_length &&
+ (le16_to_cpu(ctx->attr->name_offset) >=
+ le16_to_cpu(ctx->attr->data.non_resident.
+ mapping_pairs_offset)))) {
+ ntfs_error(vol->sb, "$INDEX_ALLOCATION attribute name "
+ "is placed after the mapping pairs "
+ "array.");
+ goto unm_err_out;
+ }
if (ctx->attr->flags & ATTR_IS_ENCRYPTED) {
ntfs_error(vi->i_sb, "$INDEX_ALLOCATION attribute "
"is encrypted.");
if (ctx->attr->data.non_resident.lowest_vcn) {
ntfs_error(vi->i_sb, "First extent of "
"$INDEX_ALLOCATION attribute has non "
- "zero lowest_vcn. Inode is corrupt. "
- "You should run chkdsk.");
+ "zero lowest_vcn.");
goto unm_err_out;
}
vi->i_size = sle64_to_cpu(
goto unm_err_out;
}
skip_large_dir_stuff:
- /* Everyone gets read and scan permissions. */
- vi->i_mode |= S_IRUGO | S_IXUGO;
- /* If not read-only, set write permissions. */
- if (!IS_RDONLY(vi))
- vi->i_mode |= S_IWUGO;
- /*
- * Apply the directory permissions mask set in the mount
- * options.
- */
- vi->i_mode &= ~vol->dmask;
/* Setup the operations for this inode. */
vi->i_op = &ntfs_dir_inode_ops;
vi->i_fop = &ntfs_dir_ops;
- vi->i_mapping->a_ops = &ntfs_mst_aops;
} else {
/* It is a file. */
ntfs_attr_reinit_search_ctx(ctx);
goto no_data_attr_special_case;
// FIXME: File is corrupt! Hot-fix with empty data
// attribute if recovery option is set.
- ntfs_error(vi->i_sb, "$DATA attribute is "
- "missing.");
+ ntfs_error(vi->i_sb, "$DATA attribute is missing.");
goto unm_err_out;
}
/* Setup the state. */
compression_unit != 4) {
ntfs_error(vi->i_sb, "Found "
"nonstandard compression unit "
- "(%u instead of 4). Cannot "
- "handle this. This might "
- "indicate corruption so you "
- "should run chkdsk.",
+ "(%u instead of 4). Cannot "
+ "handle this.",
ctx->attr->data.non_resident.
compression_unit);
err = -EOPNOTSUPP;
if (ctx->attr->data.non_resident.lowest_vcn) {
ntfs_error(vi->i_sb, "First extent of $DATA "
"attribute has non zero "
- "lowest_vcn. Inode is corrupt. "
- "You should run chkdsk.");
+ "lowest_vcn.");
goto unm_err_out;
}
/* Setup all the sizes. */
unmap_mft_record(ni);
m = NULL;
ctx = NULL;
- /* Everyone gets all permissions. */
- vi->i_mode |= S_IRWXUGO;
- /* If read-only, noone gets write permissions. */
- if (IS_RDONLY(vi))
- vi->i_mode &= ~S_IWUGO;
- /* Apply the file permissions mask set in the mount options. */
- vi->i_mode &= ~vol->fmask;
/* Setup the operations for this inode. */
vi->i_op = &ntfs_file_inode_ops;
vi->i_fop = &ntfs_file_ops;
- vi->i_mapping->a_ops = &ntfs_aops;
}
+ if (NInoMstProtected(ni))
+ vi->i_mapping->a_ops = &ntfs_mst_aops;
+ else
+ vi->i_mapping->a_ops = &ntfs_aops;
/*
* The number of 512-byte blocks used on disk (for stat). This is in so
* far inaccurate as it doesn't account for any named streams or other
if (m)
unmap_mft_record(ni);
err_out:
- ntfs_error(vi->i_sb, "Failed with error code %i. Marking inode 0x%lx "
- "as bad.", -err, vi->i_ino);
+ ntfs_error(vol->sb, "Failed with error code %i. Marking corrupt "
+ "inode 0x%lx as bad. Run chkdsk.", err, vi->i_ino);
make_bad_inode(vi);
+ if (err != -EOPNOTSUPP && err != -ENOMEM)
+ NVolSetErrors(vol);
return err;
}
goto unm_err_out;
if (!ctx->attr->non_resident) {
+ /* Ensure the attribute name is placed before the value. */
+ if (unlikely(ctx->attr->name_length &&
+ (le16_to_cpu(ctx->attr->name_offset) >=
+ le16_to_cpu(ctx->attr->data.resident.
+ value_offset)))) {
+ ntfs_error(vol->sb, "Attribute name is placed after "
+ "the attribute value.");
+ goto unm_err_out;
+ }
if (NInoMstProtected(ni) || ctx->attr->flags) {
ntfs_error(vi->i_sb, "Found mst protected attribute "
"or attribute with non-zero flags but "
- "the attribute is resident (mft_no "
- "0x%lx, type 0x%x, name_len %i). "
- "Please report you saw this message "
- "to linux-ntfs-dev@lists."
- "sourceforge.net",
- vi->i_ino, ni->type, ni->name_len);
+ "the attribute is resident. Please "
+ "report you saw this message to "
+ "linux-ntfs-dev@lists.sourceforge.net");
goto unm_err_out;
}
/*
le32_to_cpu(ctx->attr->data.resident.value_length);
} else {
NInoSetNonResident(ni);
+ /*
+ * Ensure the attribute name is placed before the mapping pairs
+ * array.
+ */
+ if (unlikely(ctx->attr->name_length &&
+ (le16_to_cpu(ctx->attr->name_offset) >=
+ le16_to_cpu(ctx->attr->data.non_resident.
+ mapping_pairs_offset)))) {
+ ntfs_error(vol->sb, "Attribute name is placed after "
+ "the mapping pairs array.");
+ goto unm_err_out;
+ }
if (ctx->attr->flags & ATTR_COMPRESSION_MASK) {
if (NInoMstProtected(ni)) {
ntfs_error(vi->i_sb, "Found mst protected "
"attribute but the attribute "
- "is compressed (mft_no 0x%lx, "
- "type 0x%x, name_len %i). "
- "Please report you saw this "
- "message to linux-ntfs-dev@"
- "lists.sourceforge.net",
- vi->i_ino, ni->type,
- ni->name_len);
+ "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 "
- "(mft_no 0x%lx, type 0x%x, "
- "name_len %i). Please report "
+ 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",
- vi->i_ino, ni->type,
- ni->name_len);
+ "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);
+ 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 ((ctx->attr->flags & ATTR_COMPRESSION_MASK)
!= ATTR_IS_COMPRESSED) {
ntfs_error(vi->i_sb, "Found unknown "
- "compression method or "
- "corrupt file.");
+ "compression method.");
goto unm_err_out;
}
ni->itype.compressed.block_clusters = 1U <<
ctx->attr->data.non_resident.
compression_unit;
- if (ctx->attr->data.non_resident.compression_unit != 4) {
- ntfs_error(vi->i_sb, "Found "
- "nonstandard compression unit "
- "(%u instead of 4). Cannot "
- "handle this. This might "
- "indicate corruption so you "
- "should run chkdsk.",
- ctx->attr->data.non_resident.
- compression_unit);
+ if (ctx->attr->data.non_resident.compression_unit !=
+ 4) {
+ ntfs_error(vi->i_sb, "Found nonstandard "
+ "compression unit (%u instead "
+ "of 4). Cannot handle this.",
+ ctx->attr->data.non_resident.
+ compression_unit);
err = -EOPNOTSUPP;
goto unm_err_out;
}
if (NInoMstProtected(ni)) {
ntfs_error(vi->i_sb, "Found mst protected "
"attribute but the attribute "
- "is encrypted (mft_no 0x%lx, "
- "type 0x%x, name_len %i). "
- "Please report you saw this "
- "message to linux-ntfs-dev@"
- "lists.sourceforge.net",
- vi->i_ino, ni->type,
- ni->name_len);
+ "is encrypted. Please report "
+ "you saw this message to "
+ "linux-ntfs-dev@lists."
+ "sourceforge.net");
goto unm_err_out;
}
NInoSetEncrypted(ni);
if (NInoMstProtected(ni)) {
ntfs_error(vi->i_sb, "Found mst protected "
"attribute but the attribute "
- "is sparse (mft_no 0x%lx, "
- "type 0x%x, name_len %i). "
- "Please report you saw this "
- "message to linux-ntfs-dev@"
- "lists.sourceforge.net",
- vi->i_ino, ni->type,
- ni->name_len);
+ "is sparse. Please report "
+ "you saw this message to "
+ "linux-ntfs-dev@lists."
+ "sourceforge.net");
goto unm_err_out;
}
NInoSetSparse(ni);
}
if (ctx->attr->data.non_resident.lowest_vcn) {
ntfs_error(vi->i_sb, "First extent of attribute has "
- "non-zero lowest_vcn. Inode is "
- "corrupt. You should run chkdsk.");
+ "non-zero lowest_vcn.");
goto unm_err_out;
}
/* Setup all the sizes. */
ntfs_attr_put_search_ctx(ctx);
unmap_mft_record(base_ni);
err_out:
- ntfs_error(vi->i_sb, "Failed with error code %i while reading "
- "attribute inode (mft_no 0x%lx, type 0x%x, name_len "
- "%i.", -err, vi->i_ino, ni->type, ni->name_len);
+ ntfs_error(vol->sb, "Failed with error code %i while reading attribute "
+ "inode (mft_no 0x%lx, type 0x%x, name_len %i). "
+ "Marking corrupt inode and base inode 0x%lx as bad. "
+ "Run chkdsk.", err, vi->i_ino, ni->type, ni->name_len,
+ base_vi->i_ino);
make_bad_inode(vi);
+ make_bad_inode(base_vi);
+ if (err != -ENOMEM)
+ NVolSetErrors(vol);
return err;
}
goto unm_err_out;
}
/* Set up the state. */
- if (ctx->attr->non_resident) {
- ntfs_error(vi->i_sb, "$INDEX_ROOT attribute is not resident. "
- "Not allowed.");
+ if (unlikely(ctx->attr->non_resident)) {
+ ntfs_error(vol->sb, "$INDEX_ROOT attribute is not resident.");
+ goto unm_err_out;
+ }
+ /* Ensure the attribute name is placed before the value. */
+ if (unlikely(ctx->attr->name_length &&
+ (le16_to_cpu(ctx->attr->name_offset) >=
+ le16_to_cpu(ctx->attr->data.resident.
+ value_offset)))) {
+ ntfs_error(vol->sb, "$INDEX_ROOT attribute name is placed "
+ "after the attribute value.");
goto unm_err_out;
}
/* Compressed/encrypted/sparse index root is not allowed. */
if (ctx->attr->flags & (ATTR_COMPRESSION_MASK | ATTR_IS_ENCRYPTED |
ATTR_IS_SPARSE)) {
ntfs_error(vi->i_sb, "Found compressed/encrypted/sparse index "
- "root attribute. Not allowed.");
+ "root attribute.");
goto unm_err_out;
}
ir = (INDEX_ROOT*)((u8*)ctx->attr +
goto unm_err_out;
}
if (ir->type) {
- ntfs_error(vi->i_sb, "Index type is not 0 (type is 0x%x). "
- "Not allowed.", le32_to_cpu(ir->type));
+ ntfs_error(vi->i_sb, "Index type is not 0 (type is 0x%x).",
+ le32_to_cpu(ir->type));
goto unm_err_out;
}
ni->itype.index.collation_rule = ir->collation_rule;
"resident.");
goto unm_err_out;
}
+ /*
+ * Ensure the attribute name is placed before the mapping pairs array.
+ */
+ if (unlikely(ctx->attr->name_length && (le16_to_cpu(
+ ctx->attr->name_offset) >= le16_to_cpu(
+ ctx->attr->data.non_resident.mapping_pairs_offset)))) {
+ ntfs_error(vol->sb, "$INDEX_ALLOCATION attribute name is "
+ "placed after the mapping pairs array.");
+ goto unm_err_out;
+ }
if (ctx->attr->flags & ATTR_IS_ENCRYPTED) {
ntfs_error(vi->i_sb, "$INDEX_ALLOCATION attribute is "
"encrypted.");
}
if (ctx->attr->data.non_resident.lowest_vcn) {
ntfs_error(vi->i_sb, "First extent of $INDEX_ALLOCATION "
- "attribute has non zero lowest_vcn. Inode is "
- "corrupt. You should run chkdsk.");
+ "attribute has non zero lowest_vcn.");
goto unm_err_out;
}
vi->i_size = sle64_to_cpu(ctx->attr->data.non_resident.data_size);
bni = NTFS_I(bvi);
if (NInoCompressed(bni) || NInoEncrypted(bni) ||
NInoSparse(bni)) {
- ntfs_error(vi->i_sb, "$BITMAP attribute is compressed "
- "and/or encrypted and/or sparse.");
+ ntfs_error(vi->i_sb, "$BITMAP attribute is compressed and/or "
+ "encrypted and/or sparse.");
goto iput_unm_err_out;
}
/* Consistency check bitmap size vs. index allocation size. */
if ((bvi->i_size << 3) < (vi->i_size >>
ni->itype.index.block_size_bits)) {
- ntfs_error(vi->i_sb, "Index bitmap too small (0x%llx) "
- "for index allocation (0x%llx).",
- bvi->i_size << 3, vi->i_size);
+ ntfs_error(vi->i_sb, "Index bitmap too small (0x%llx) for "
+ "index allocation (0x%llx).", bvi->i_size << 3,
+ vi->i_size);
goto iput_unm_err_out;
}
ni->itype.index.bmp_ino = bvi;
unmap_mft_record(base_ni);
err_out:
ntfs_error(vi->i_sb, "Failed with error code %i while reading index "
- "inode (mft_no 0x%lx, name_len %i.", -err, vi->i_ino,
+ "inode (mft_no 0x%lx, name_len %i.", err, vi->i_ino,
ni->name_len);
make_bad_inode(vi);
+ if (err != -EOPNOTSUPP && err != -ENOMEM)
+ NVolSetErrors(vol);
return err;
}
*
* We solve these problems by starting with the $DATA attribute before anything
* else and iterating using ntfs_attr_lookup($DATA) over all extents. As each
- * extent is found, we decompress_mapping_pairs() including the implied
- * ntfs_merge_runlists(). Each step of the iteration necessarily provides
+ * extent is found, we ntfs_mapping_pairs_decompress() including the implied
+ * ntfs_runlists_merge(). Each step of the iteration necessarily provides
* sufficient information for the next step to complete.
*
* This should work but there are two possible pit falls (see inline comments
vi->i_generation = ni->seq_no = le16_to_cpu(m->sequence_number);
/* Provides readpage() and sync_page() for map_mft_record(). */
- vi->i_mapping->a_ops = &ntfs_mft_aops;
+ vi->i_mapping->a_ops = &ntfs_mst_aops;
ctx = ntfs_attr_get_search_ctx(ni, m);
if (!ctx) {
goto put_err_out;
}
/* Setup the runlist. */
- ni->attr_list_rl.rl = decompress_mapping_pairs(vol,
+ ni->attr_list_rl.rl = ntfs_mapping_pairs_decompress(vol,
ctx->attr, NULL);
if (IS_ERR(ni->attr_list_rl.rl)) {
err = PTR_ERR(ni->attr_list_rl.rl);
* as we have exclusive access to the inode at this time and we
* are a mount in progress task, too.
*/
- nrl = decompress_mapping_pairs(vol, attr, ni->runlist.rl);
+ nrl = ntfs_mapping_pairs_decompress(vol, attr, ni->runlist.rl);
if (IS_ERR(nrl)) {
- ntfs_error(sb, "decompress_mapping_pairs() failed with "
- "error code %ld. $MFT is corrupt.",
- PTR_ERR(nrl));
+ ntfs_error(sb, "ntfs_mapping_pairs_decompress() "
+ "failed with error code %ld. $MFT is "
+ "corrupt.", PTR_ERR(nrl));
goto put_err_out;
}
ni->runlist.rl = nrl;
/* No VFS initiated operations allowed for $MFT. */
vi->i_op = &ntfs_empty_inode_ops;
vi->i_fop = &ntfs_empty_file_ops;
- /* Put back our special address space operations. */
- vi->i_mapping->a_ops = &ntfs_mft_aops;
}
/* Get the lowest vcn for the next extent. */
* dropped, we need to put the attribute inode for the directory index bitmap,
* if it is present, otherwise the directory inode would remain pinned for
* ever.
- *
- * If the inode @vi is an index inode with only one reference which is being
- * dropped, we need to put the attribute inode for the index bitmap, if it is
- * present, otherwise the index inode would disappear and the attribute inode
- * for the index bitmap would no longer be referenced from anywhere and thus it
- * would remain pinned for ever.
*/
void ntfs_put_inode(struct inode *vi)
{
- ntfs_inode *ni;
-
- if (S_ISDIR(vi->i_mode)) {
- if (atomic_read(&vi->i_count) == 2) {
- ni = NTFS_I(vi);
- if (NInoIndexAllocPresent(ni) &&
- ni->itype.index.bmp_ino) {
- iput(ni->itype.index.bmp_ino);
- ni->itype.index.bmp_ino = NULL;
+ if (S_ISDIR(vi->i_mode) && atomic_read(&vi->i_count) == 2) {
+ ntfs_inode *ni = NTFS_I(vi);
+ if (NInoIndexAllocPresent(ni)) {
+ struct inode *bvi = NULL;
+ down(&vi->i_sem);
+ if (atomic_read(&vi->i_count) == 2) {
+ bvi = ni->itype.index.bmp_ino;
+ if (bvi)
+ ni->itype.index.bmp_ino = NULL;
}
+ up(&vi->i_sem);
+ if (bvi)
+ iput(bvi);
}
- return;
- }
- if (atomic_read(&vi->i_count) != 1)
- return;
- ni = NTFS_I(vi);
- if (NInoAttr(ni) && (ni->type == AT_INDEX_ALLOCATION) &&
- NInoIndexAllocPresent(ni) && ni->itype.index.bmp_ino) {
- iput(ni->itype.index.bmp_ino);
- ni->itype.index.bmp_ino = NULL;
}
- return;
}
-void __ntfs_clear_inode(ntfs_inode *ni)
+static void __ntfs_clear_inode(ntfs_inode *ni)
{
/* Free all alocated memory. */
down_write(&ni->runlist.lock);
{
ntfs_inode *ni = NTFS_I(vi);
+ /*
+ * If the inode @vi is an index inode we need to put the attribute
+ * inode for the index bitmap, if it is present, otherwise the index
+ * inode would disappear and the attribute inode for the index bitmap
+ * would no longer be referenced from anywhere and thus it would remain
+ * pinned for ever.
+ */
+ if (NInoAttr(ni) && (ni->type == AT_INDEX_ALLOCATION) &&
+ NInoIndexAllocPresent(ni) && ni->itype.index.bmp_ino) {
+ iput(ni->itype.index.bmp_ino);
+ ni->itype.index.bmp_ino = NULL;
+ }
#ifdef NTFS_RW
if (NInoDirty(ni)) {
BOOL was_bad = (is_bad_inode(vi));
* ntfs_truncate - called when the i_size of an ntfs inode is changed
* @vi: inode for which the i_size was changed
*
- * We don't support i_size changes yet.
+ * We do not support i_size changes yet.
*
* The kernel guarantees that @vi is a regular file (S_ISREG() is true) and
* that the change is allowed.
* This implies for us that @vi is a file inode rather than a directory, index,
* or attribute inode as well as that @vi is a base inode.
*
+ * Returns 0 on success or -errno on error.
+ *
* Called with ->i_sem held. In all but one case ->i_alloc_sem is held for
* writing. The only case where ->i_alloc_sem is not held is
* mm/filemap.c::generic_file_buffered_write() where vmtruncate() is called
* with the current i_size as the offset which means that it is a noop as far
* as ntfs_truncate() is concerned.
*/
-void ntfs_truncate(struct inode *vi)
+int ntfs_truncate(struct inode *vi)
{
ntfs_inode *ni = NTFS_I(vi);
+ ntfs_volume *vol = ni->vol;
ntfs_attr_search_ctx *ctx;
MFT_RECORD *m;
+ const char *te = " Leaving file length out of sync with i_size.";
int err;
+ ntfs_debug("Entering for inode 0x%lx.", vi->i_ino);
+ BUG_ON(NInoAttr(ni));
+ BUG_ON(ni->nr_extents < 0);
m = map_mft_record(ni);
if (IS_ERR(m)) {
+ err = PTR_ERR(m);
ntfs_error(vi->i_sb, "Failed to map mft record for inode 0x%lx "
- "(error code %ld).", vi->i_ino, PTR_ERR(m));
- if (PTR_ERR(m) != ENOMEM)
- make_bad_inode(vi);
- return;
+ "(error code %d).%s", vi->i_ino, err, te);
+ ctx = NULL;
+ m = NULL;
+ goto err_out;
}
ctx = ntfs_attr_get_search_ctx(ni, m);
if (unlikely(!ctx)) {
- ntfs_error(vi->i_sb, "Failed to allocate a search context: "
- "Not enough memory");
- // FIXME: We can't report an error code upstream. So what do
- // we do?!? make_bad_inode() seems a bit harsh...
- unmap_mft_record(ni);
- return;
+ ntfs_error(vi->i_sb, "Failed to allocate a search context for "
+ "inode 0x%lx (not enough memory).%s",
+ vi->i_ino, te);
+ err = -ENOMEM;
+ goto err_out;
}
err = ntfs_attr_lookup(ni->type, ni->name, ni->name_len,
CASE_SENSITIVE, 0, NULL, 0, ctx);
if (unlikely(err)) {
- if (err == -ENOENT) {
+ if (err == -ENOENT)
ntfs_error(vi->i_sb, "Open attribute is missing from "
"mft record. Inode 0x%lx is corrupt. "
"Run chkdsk.", vi->i_ino);
- make_bad_inode(vi);
- } else {
+ else
ntfs_error(vi->i_sb, "Failed to lookup attribute in "
"inode 0x%lx (error code %d).",
vi->i_ino, err);
- // FIXME: We can't report an error code upstream. So
- // what do we do?!? make_bad_inode() seems a bit
- // harsh...
- }
- goto out;
+ goto err_out;
}
/* If the size has not changed there is nothing to do. */
if (ntfs_attr_size(ctx->attr) == i_size_read(vi))
- goto out;
+ goto done;
// TODO: Implement the truncate...
ntfs_error(vi->i_sb, "Inode size has changed but this is not "
"implemented yet. Resetting inode size to old value. "
" This is most likely a bug in the ntfs driver!");
i_size_write(vi, ntfs_attr_size(ctx->attr));
-out:
+done:
ntfs_attr_put_search_ctx(ctx);
unmap_mft_record(ni);
- return;
+ NInoClearTruncateFailed(ni);
+ ntfs_debug("Done.");
+ return 0;
+err_out:
+ if (err != -ENOMEM) {
+ NVolSetErrors(vol);
+ make_bad_inode(vi);
+ }
+ if (ctx)
+ ntfs_attr_put_search_ctx(ctx);
+ if (m)
+ unmap_mft_record(ni);
+ NInoSetTruncateFailed(ni);
+ return err;
+}
+
+/**
+ * ntfs_truncate_vfs - wrapper for ntfs_truncate() that has no return value
+ * @vi: inode for which the i_size was changed
+ *
+ * Wrapper for ntfs_truncate() that has no return value.
+ *
+ * See ntfs_truncate() description above for details.
+ */
+void ntfs_truncate_vfs(struct inode *vi) {
+ ntfs_truncate(vi);
}
/**
* dirty, since we are going to write this mft record below in any case
* and the base mft record may actually not have been modified so it
* might not need to be written out.
+ * NOTE: It is not a problem when the inode for $MFT itself is being
+ * written out as mark_ntfs_record_dirty() will only set I_DIRTY_PAGES
+ * on the $MFT inode and hence ntfs_write_inode() will not be
+ * re-invoked because of it which in turn is ok since the dirtied mft
+ * record will be cleaned and written out to disk below, i.e. before
+ * this function returns.
*/
if (modified && !NInoTestSetDirty(ctx->ntfs_ino))
- __set_page_dirty_nobuffers(ctx->ntfs_ino->page);
+ mark_ntfs_record_dirty(ctx->ntfs_ino->page,
+ ctx->ntfs_ino->page_ofs);
ntfs_attr_put_search_ctx(ctx);
/* Now the access times are updated, write the base mft record. */
if (NInoDirty(ni))
ntfs_error(vi->i_sb, "Failed (error code %i): Marking inode "
"as bad. You should run chkdsk.", -err);
make_bad_inode(vi);
+ NVolSetErrors(ni->vol);
}
return err;
}
git://git.onelab.eu / linux-2.6.git / blobdiff