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-rw-r--r--fs/ntfs3/attrib.c20
-rw-r--r--fs/ntfs3/attrlist.c8
-rw-r--r--fs/ntfs3/dir.c40
-rw-r--r--fs/ntfs3/file.c2
-rw-r--r--fs/ntfs3/frecord.c5
-rw-r--r--fs/ntfs3/fslog.c14
-rw-r--r--fs/ntfs3/fsntfs.c41
-rw-r--r--fs/ntfs3/index.c14
-rw-r--r--fs/ntfs3/inode.c2
-rw-r--r--fs/ntfs3/ntfs.h4
-rw-r--r--fs/ntfs3/ntfs_fs.h16
-rw-r--r--fs/ntfs3/record.c25
-rw-r--r--fs/ntfs3/xattr.c3
13 files changed, 128 insertions, 66 deletions
diff --git a/fs/ntfs3/attrib.c b/fs/ntfs3/attrib.c
index 2215179c9..2618bf5a3 100644
--- a/fs/ntfs3/attrib.c
+++ b/fs/ntfs3/attrib.c
@@ -1658,8 +1658,10 @@ repack:
le_b = NULL;
attr_b = ni_find_attr(ni, NULL, &le_b, ATTR_DATA, NULL,
0, NULL, &mi_b);
- if (!attr_b)
- return -ENOENT;
+ if (!attr_b) {
+ err = -ENOENT;
+ goto out;
+ }
attr = attr_b;
le = le_b;
@@ -1740,13 +1742,15 @@ ins_ext:
ok:
run_truncate_around(run, vcn);
out:
- if (new_valid > data_size)
- new_valid = data_size;
+ if (attr_b) {
+ if (new_valid > data_size)
+ new_valid = data_size;
- valid_size = le64_to_cpu(attr_b->nres.valid_size);
- if (new_valid != valid_size) {
- attr_b->nres.valid_size = cpu_to_le64(valid_size);
- mi_b->dirty = true;
+ valid_size = le64_to_cpu(attr_b->nres.valid_size);
+ if (new_valid != valid_size) {
+ attr_b->nres.valid_size = cpu_to_le64(valid_size);
+ mi_b->dirty = true;
+ }
}
return err;
diff --git a/fs/ntfs3/attrlist.c b/fs/ntfs3/attrlist.c
index 0c6a68e71..723e49ec8 100644
--- a/fs/ntfs3/attrlist.c
+++ b/fs/ntfs3/attrlist.c
@@ -127,12 +127,13 @@ struct ATTR_LIST_ENTRY *al_enumerate(struct ntfs_inode *ni,
{
size_t off;
u16 sz;
+ const unsigned le_min_size = le_size(0);
if (!le) {
le = ni->attr_list.le;
} else {
sz = le16_to_cpu(le->size);
- if (sz < sizeof(struct ATTR_LIST_ENTRY)) {
+ if (sz < le_min_size) {
/* Impossible 'cause we should not return such le. */
return NULL;
}
@@ -141,7 +142,7 @@ struct ATTR_LIST_ENTRY *al_enumerate(struct ntfs_inode *ni,
/* Check boundary. */
off = PtrOffset(ni->attr_list.le, le);
- if (off + sizeof(struct ATTR_LIST_ENTRY) > ni->attr_list.size) {
+ if (off + le_min_size > ni->attr_list.size) {
/* The regular end of list. */
return NULL;
}
@@ -149,8 +150,7 @@ struct ATTR_LIST_ENTRY *al_enumerate(struct ntfs_inode *ni,
sz = le16_to_cpu(le->size);
/* Check le for errors. */
- if (sz < sizeof(struct ATTR_LIST_ENTRY) ||
- off + sz > ni->attr_list.size ||
+ if (sz < le_min_size || off + sz > ni->attr_list.size ||
sz < le->name_off + le->name_len * sizeof(short)) {
return NULL;
}
diff --git a/fs/ntfs3/dir.c b/fs/ntfs3/dir.c
index d4d9f4ffb..72cdfa872 100644
--- a/fs/ntfs3/dir.c
+++ b/fs/ntfs3/dir.c
@@ -309,11 +309,31 @@ static inline int ntfs_filldir(struct ntfs_sb_info *sbi, struct ntfs_inode *ni,
return 0;
}
- /* NTFS: symlinks are "dir + reparse" or "file + reparse" */
- if (fname->dup.fa & FILE_ATTRIBUTE_REPARSE_POINT)
- dt_type = DT_LNK;
- else
- dt_type = (fname->dup.fa & FILE_ATTRIBUTE_DIRECTORY) ? DT_DIR : DT_REG;
+ /*
+ * NTFS: symlinks are "dir + reparse" or "file + reparse"
+ * Unfortunately reparse attribute is used for many purposes (several dozens).
+ * It is not possible here to know is this name symlink or not.
+ * To get exactly the type of name we should to open inode (read mft).
+ * getattr for opened file (fstat) correctly returns symlink.
+ */
+ dt_type = (fname->dup.fa & FILE_ATTRIBUTE_DIRECTORY) ? DT_DIR : DT_REG;
+
+ /*
+ * It is not reliable to detect the type of name using duplicated information
+ * stored in parent directory.
+ * The only correct way to get the type of name - read MFT record and find ATTR_STD.
+ * The code below is not good idea.
+ * It does additional locks/reads just to get the type of name.
+ * Should we use additional mount option to enable branch below?
+ */
+ if ((fname->dup.fa & FILE_ATTRIBUTE_REPARSE_POINT) &&
+ ino != ni->mi.rno) {
+ struct inode *inode = ntfs_iget5(sbi->sb, &e->ref, NULL);
+ if (!IS_ERR_OR_NULL(inode)) {
+ dt_type = fs_umode_to_dtype(inode->i_mode);
+ iput(inode);
+ }
+ }
return !dir_emit(ctx, (s8 *)name, name_len, ino, dt_type);
}
@@ -495,11 +515,9 @@ static int ntfs_dir_count(struct inode *dir, bool *is_empty, size_t *dirs,
struct INDEX_HDR *hdr;
const struct ATTR_FILE_NAME *fname;
u32 e_size, off, end;
- u64 vbo = 0;
size_t drs = 0, fles = 0, bit = 0;
- loff_t i_size = ni->vfs_inode.i_size;
struct indx_node *node = NULL;
- u8 index_bits = ni->dir.index_bits;
+ size_t max_indx = ni->vfs_inode.i_size >> ni->dir.index_bits;
if (is_empty)
*is_empty = true;
@@ -543,7 +561,7 @@ static int ntfs_dir_count(struct inode *dir, bool *is_empty, size_t *dirs,
fles += 1;
}
- if (vbo >= i_size)
+ if (bit >= max_indx)
goto out;
err = indx_used_bit(&ni->dir, ni, &bit);
@@ -553,8 +571,7 @@ static int ntfs_dir_count(struct inode *dir, bool *is_empty, size_t *dirs,
if (bit == MINUS_ONE_T)
goto out;
- vbo = (u64)bit << index_bits;
- if (vbo >= i_size)
+ if (bit >= max_indx)
goto out;
err = indx_read(&ni->dir, ni, bit << ni->dir.idx2vbn_bits,
@@ -564,7 +581,6 @@ static int ntfs_dir_count(struct inode *dir, bool *is_empty, size_t *dirs,
hdr = &node->index->ihdr;
bit += 1;
- vbo = (u64)bit << ni->dir.idx2vbn_bits;
}
out:
diff --git a/fs/ntfs3/file.c b/fs/ntfs3/file.c
index f31c0389a..14efe46df 100644
--- a/fs/ntfs3/file.c
+++ b/fs/ntfs3/file.c
@@ -1110,6 +1110,8 @@ out:
iocb->ki_pos += written;
if (iocb->ki_pos > ni->i_valid)
ni->i_valid = iocb->ki_pos;
+ if (iocb->ki_pos > i_size)
+ i_size_write(inode, iocb->ki_pos);
return written;
}
diff --git a/fs/ntfs3/frecord.c b/fs/ntfs3/frecord.c
index bb7e33c24..d26026090 100644
--- a/fs/ntfs3/frecord.c
+++ b/fs/ntfs3/frecord.c
@@ -102,7 +102,7 @@ void ni_clear(struct ntfs_inode *ni)
{
struct rb_node *node;
- if (!ni->vfs_inode.i_nlink && is_rec_inuse(ni->mi.mrec))
+ if (!ni->vfs_inode.i_nlink && ni->mi.mrec && is_rec_inuse(ni->mi.mrec))
ni_delete_all(ni);
al_destroy(ni);
@@ -3255,6 +3255,9 @@ int ni_write_inode(struct inode *inode, int sync, const char *hint)
return 0;
}
+ if (!ni->mi.mrec)
+ goto out;
+
if (is_rec_inuse(ni->mi.mrec) &&
!(sbi->flags & NTFS_FLAGS_LOG_REPLAYING) && inode->i_nlink) {
bool modified = false;
diff --git a/fs/ntfs3/fslog.c b/fs/ntfs3/fslog.c
index 710cb5aa5..d53ef128f 100644
--- a/fs/ntfs3/fslog.c
+++ b/fs/ntfs3/fslog.c
@@ -465,7 +465,7 @@ static inline bool is_rst_area_valid(const struct RESTART_HDR *rhdr)
{
const struct RESTART_AREA *ra;
u16 cl, fl, ul;
- u32 off, l_size, file_dat_bits, file_size_round;
+ u32 off, l_size, seq_bits;
u16 ro = le16_to_cpu(rhdr->ra_off);
u32 sys_page = le32_to_cpu(rhdr->sys_page_size);
@@ -511,13 +511,15 @@ static inline bool is_rst_area_valid(const struct RESTART_HDR *rhdr)
/* Make sure the sequence number bits match the log file size. */
l_size = le64_to_cpu(ra->l_size);
- file_dat_bits = sizeof(u64) * 8 - le32_to_cpu(ra->seq_num_bits);
- file_size_round = 1u << (file_dat_bits + 3);
- if (file_size_round != l_size &&
- (file_size_round < l_size || (file_size_round / 2) > l_size)) {
- return false;
+ seq_bits = sizeof(u64) * 8 + 3;
+ while (l_size) {
+ l_size >>= 1;
+ seq_bits -= 1;
}
+ if (seq_bits != ra->seq_num_bits)
+ return false;
+
/* The log page data offset and record header length must be quad-aligned. */
if (!IS_ALIGNED(le16_to_cpu(ra->data_off), 8) ||
!IS_ALIGNED(le16_to_cpu(ra->rec_hdr_len), 8))
diff --git a/fs/ntfs3/fsntfs.c b/fs/ntfs3/fsntfs.c
index 873b1434a..4c2d079b3 100644
--- a/fs/ntfs3/fsntfs.c
+++ b/fs/ntfs3/fsntfs.c
@@ -976,6 +976,30 @@ static inline __le32 security_hash(const void *sd, size_t bytes)
return cpu_to_le32(hash);
}
+/*
+ * simple wrapper for sb_bread_unmovable.
+ */
+struct buffer_head *ntfs_bread(struct super_block *sb, sector_t block)
+{
+ struct ntfs_sb_info *sbi = sb->s_fs_info;
+ struct buffer_head *bh;
+
+ if (unlikely(block >= sbi->volume.blocks)) {
+ /* prevent generic message "attempt to access beyond end of device" */
+ ntfs_err(sb, "try to read out of volume at offset 0x%llx",
+ (u64)block << sb->s_blocksize_bits);
+ return NULL;
+ }
+
+ bh = sb_bread_unmovable(sb, block);
+ if (bh)
+ return bh;
+
+ ntfs_err(sb, "failed to read volume at offset 0x%llx",
+ (u64)block << sb->s_blocksize_bits);
+ return NULL;
+}
+
int ntfs_sb_read(struct super_block *sb, u64 lbo, size_t bytes, void *buffer)
{
struct block_device *bdev = sb->s_bdev;
@@ -1650,6 +1674,7 @@ struct ntfs_inode *ntfs_new_inode(struct ntfs_sb_info *sbi, CLST rno, bool dir)
out:
if (err) {
+ make_bad_inode(inode);
iput(inode);
ni = ERR_PTR(err);
}
@@ -1842,10 +1867,12 @@ int ntfs_security_init(struct ntfs_sb_info *sbi)
goto out;
}
- root_sdh = resident_data_ex(attr, sizeof(struct INDEX_ROOT));
- if (root_sdh->type != ATTR_ZERO ||
+ if(!(root_sdh = resident_data_ex(attr, sizeof(struct INDEX_ROOT))) ||
+ root_sdh->type != ATTR_ZERO ||
root_sdh->rule != NTFS_COLLATION_TYPE_SECURITY_HASH ||
- offsetof(struct INDEX_ROOT, ihdr) + root_sdh->ihdr.used > attr->res.data_size) {
+ offsetof(struct INDEX_ROOT, ihdr) +
+ le32_to_cpu(root_sdh->ihdr.used) >
+ le32_to_cpu(attr->res.data_size)) {
err = -EINVAL;
goto out;
}
@@ -1861,10 +1888,12 @@ int ntfs_security_init(struct ntfs_sb_info *sbi)
goto out;
}
- root_sii = resident_data_ex(attr, sizeof(struct INDEX_ROOT));
- if (root_sii->type != ATTR_ZERO ||
+ if(!(root_sii = resident_data_ex(attr, sizeof(struct INDEX_ROOT))) ||
+ root_sii->type != ATTR_ZERO ||
root_sii->rule != NTFS_COLLATION_TYPE_UINT ||
- offsetof(struct INDEX_ROOT, ihdr) + root_sii->ihdr.used > attr->res.data_size) {
+ offsetof(struct INDEX_ROOT, ihdr) +
+ le32_to_cpu(root_sii->ihdr.used) >
+ le32_to_cpu(attr->res.data_size)) {
err = -EINVAL;
goto out;
}
diff --git a/fs/ntfs3/index.c b/fs/ntfs3/index.c
index b89a33f57..eee01db6e 100644
--- a/fs/ntfs3/index.c
+++ b/fs/ntfs3/index.c
@@ -998,6 +998,7 @@ struct INDEX_ROOT *indx_get_root(struct ntfs_index *indx, struct ntfs_inode *ni,
struct ATTR_LIST_ENTRY *le = NULL;
struct ATTRIB *a;
const struct INDEX_NAMES *in = &s_index_names[indx->type];
+ struct INDEX_ROOT *root = NULL;
a = ni_find_attr(ni, NULL, &le, ATTR_ROOT, in->name, in->name_len, NULL,
mi);
@@ -1007,7 +1008,15 @@ struct INDEX_ROOT *indx_get_root(struct ntfs_index *indx, struct ntfs_inode *ni,
if (attr)
*attr = a;
- return resident_data_ex(a, sizeof(struct INDEX_ROOT));
+ root = resident_data_ex(a, sizeof(struct INDEX_ROOT));
+
+ /* length check */
+ if (root && offsetof(struct INDEX_ROOT, ihdr) + le32_to_cpu(root->ihdr.used) >
+ le32_to_cpu(a->res.data_size)) {
+ return NULL;
+ }
+
+ return root;
}
static int indx_write(struct ntfs_index *indx, struct ntfs_inode *ni,
@@ -1097,7 +1106,8 @@ ok:
}
/* check for index header length */
- if (offsetof(struct INDEX_BUFFER, ihdr) + ib->ihdr.used > bytes) {
+ if (offsetof(struct INDEX_BUFFER, ihdr) + le32_to_cpu(ib->ihdr.used) >
+ bytes) {
err = -EINVAL;
goto out;
}
diff --git a/fs/ntfs3/inode.c b/fs/ntfs3/inode.c
index dc937089a..42dd9fdaf 100644
--- a/fs/ntfs3/inode.c
+++ b/fs/ntfs3/inode.c
@@ -402,7 +402,6 @@ end_enum:
goto out;
if (!is_match && name) {
- /* Reuse rec as buffer for ascii name. */
err = -ENOENT;
goto out;
}
@@ -417,6 +416,7 @@ end_enum:
if (names != le16_to_cpu(rec->hard_links)) {
/* Correct minor error on the fly. Do not mark inode as dirty. */
+ ntfs_inode_warn(inode, "Correct links count -> %u.", names);
rec->hard_links = cpu_to_le16(names);
ni->mi.dirty = true;
}
diff --git a/fs/ntfs3/ntfs.h b/fs/ntfs3/ntfs.h
index 0f38d5581..ba26a465b 100644
--- a/fs/ntfs3/ntfs.h
+++ b/fs/ntfs3/ntfs.h
@@ -517,12 +517,10 @@ struct ATTR_LIST_ENTRY {
__le64 vcn; // 0x08: Starting VCN of this attribute.
struct MFT_REF ref; // 0x10: MFT record number with attribute.
__le16 id; // 0x18: struct ATTRIB ID.
- __le16 name[3]; // 0x1A: Just to align. To get real name can use bNameOffset.
+ __le16 name[]; // 0x1A: Just to align. To get real name can use name_off.
}; // sizeof(0x20)
-static_assert(sizeof(struct ATTR_LIST_ENTRY) == 0x20);
-
static inline u32 le_size(u8 name_len)
{
return ALIGN(offsetof(struct ATTR_LIST_ENTRY, name) +
diff --git a/fs/ntfs3/ntfs_fs.h b/fs/ntfs3/ntfs_fs.h
index 8c9abaf13..0f9bec29f 100644
--- a/fs/ntfs3/ntfs_fs.h
+++ b/fs/ntfs3/ntfs_fs.h
@@ -467,7 +467,7 @@ bool al_delete_le(struct ntfs_inode *ni, enum ATTR_TYPE type, CLST vcn,
int al_update(struct ntfs_inode *ni, int sync);
static inline size_t al_aligned(size_t size)
{
- return (size + 1023) & ~(size_t)1023;
+ return size_add(size, 1023) & ~(size_t)1023;
}
/* Globals from bitfunc.c */
@@ -580,6 +580,7 @@ bool check_index_header(const struct INDEX_HDR *hdr, size_t bytes);
int log_replay(struct ntfs_inode *ni, bool *initialized);
/* Globals from fsntfs.c */
+struct buffer_head *ntfs_bread(struct super_block *sb, sector_t block);
bool ntfs_fix_pre_write(struct NTFS_RECORD_HEADER *rhdr, size_t bytes);
int ntfs_fix_post_read(struct NTFS_RECORD_HEADER *rhdr, size_t bytes,
bool simple);
@@ -1012,19 +1013,6 @@ static inline u64 bytes_to_block(const struct super_block *sb, u64 size)
return (size + sb->s_blocksize - 1) >> sb->s_blocksize_bits;
}
-static inline struct buffer_head *ntfs_bread(struct super_block *sb,
- sector_t block)
-{
- struct buffer_head *bh = sb_bread(sb, block);
-
- if (bh)
- return bh;
-
- ntfs_err(sb, "failed to read volume at offset 0x%llx",
- (u64)block << sb->s_blocksize_bits);
- return NULL;
-}
-
static inline struct ntfs_inode *ntfs_i(struct inode *inode)
{
return container_of(inode, struct ntfs_inode, vfs_inode);
diff --git a/fs/ntfs3/record.c b/fs/ntfs3/record.c
index ba336c728..a8d4ed7bc 100644
--- a/fs/ntfs3/record.c
+++ b/fs/ntfs3/record.c
@@ -226,11 +226,6 @@ struct ATTRIB *mi_enum_attr(struct mft_inode *mi, struct ATTRIB *attr)
return NULL;
}
- if (off + asize < off) {
- /* overflow check */
- return NULL;
- }
-
attr = Add2Ptr(attr, asize);
off += asize;
}
@@ -253,8 +248,8 @@ struct ATTRIB *mi_enum_attr(struct mft_inode *mi, struct ATTRIB *attr)
if ((t32 & 0xf) || (t32 > 0x100))
return NULL;
- /* Check boundary. */
- if (off + asize > used)
+ /* Check overflow and boundary. */
+ if (off + asize < off || off + asize > used)
return NULL;
/* Check size of attribute. */
@@ -491,8 +486,20 @@ bool mi_remove_attr(struct ntfs_inode *ni, struct mft_inode *mi,
return false;
if (ni && is_attr_indexed(attr)) {
- le16_add_cpu(&ni->mi.mrec->hard_links, -1);
- ni->mi.dirty = true;
+ u16 links = le16_to_cpu(ni->mi.mrec->hard_links);
+ struct ATTR_FILE_NAME *fname =
+ attr->type != ATTR_NAME ?
+ NULL :
+ resident_data_ex(attr,
+ SIZEOF_ATTRIBUTE_FILENAME);
+ if (fname && fname->type == FILE_NAME_DOS) {
+ /* Do not decrease links count deleting DOS name. */
+ } else if (!links) {
+ /* minor error. Not critical. */
+ } else {
+ ni->mi.mrec->hard_links = cpu_to_le16(links - 1);
+ ni->mi.dirty = true;
+ }
}
used -= asize;
diff --git a/fs/ntfs3/xattr.c b/fs/ntfs3/xattr.c
index df15e00c2..d98cf7b38 100644
--- a/fs/ntfs3/xattr.c
+++ b/fs/ntfs3/xattr.c
@@ -217,6 +217,9 @@ static ssize_t ntfs_list_ea(struct ntfs_inode *ni, char *buffer,
if (!ea->name_len)
break;
+ if (ea->name_len > ea_size)
+ break;
+
if (buffer) {
/* Check if we can use field ea->name */
if (off + ea_size > size)
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-18 08:46:12 +0000