summaryrefslogtreecommitdiff
path: root/fs/ntfs3
diff options
context:
space:
mode:
Diffstat (limited to 'fs/ntfs3')
-rw-r--r--fs/ntfs3/dir.c3
-rw-r--r--fs/ntfs3/file.c25
-rw-r--r--fs/ntfs3/frecord.c7
-rw-r--r--fs/ntfs3/index.c8
-rw-r--r--fs/ntfs3/inode.c36
-rw-r--r--fs/ntfs3/namei.c10
-rw-r--r--fs/ntfs3/ntfs_fs.h3
7 files changed, 56 insertions, 36 deletions
diff --git a/fs/ntfs3/dir.c b/fs/ntfs3/dir.c
index b6da80c69ca6..600e66035c1b 100644
--- a/fs/ntfs3/dir.c
+++ b/fs/ntfs3/dir.c
@@ -304,6 +304,9 @@ static inline bool ntfs_dir_emit(struct ntfs_sb_info *sbi,
if (sbi->options->nohidden && (fname->dup.fa & FILE_ATTRIBUTE_HIDDEN))
return true;
+ if (fname->name_len + sizeof(struct NTFS_DE) > le16_to_cpu(e->size))
+ return true;
+
name_len = ntfs_utf16_to_nls(sbi, fname->name, fname->name_len, name,
PATH_MAX);
if (name_len <= 0) {
diff --git a/fs/ntfs3/file.c b/fs/ntfs3/file.c
index 7976ac4611c8..902dc8ba878e 100644
--- a/fs/ntfs3/file.c
+++ b/fs/ntfs3/file.c
@@ -392,7 +392,10 @@ static int ntfs_file_mmap(struct file *file, struct vm_area_struct *vma)
}
if (ni->i_valid < to) {
- inode_lock(inode);
+ if (!inode_trylock(inode)) {
+ err = -EAGAIN;
+ goto out;
+ }
err = ntfs_extend_initialized_size(file, ni,
ni->i_valid, to);
inode_unlock(inode);
@@ -428,6 +431,7 @@ static int ntfs_extend(struct inode *inode, loff_t pos, size_t count,
}
if (extend_init && !is_compressed(ni)) {
+ WARN_ON(ni->i_valid >= pos);
err = ntfs_extend_initialized_size(file, ni, ni->i_valid, pos);
if (err)
goto out;
@@ -1238,21 +1242,22 @@ static ssize_t ntfs_file_write_iter(struct kiocb *iocb, struct iov_iter *from)
ssize_t ret;
int err;
- err = check_write_restriction(inode);
- if (err)
- return err;
-
- if (is_compressed(ni) && (iocb->ki_flags & IOCB_DIRECT)) {
- ntfs_inode_warn(inode, "direct i/o + compressed not supported");
- return -EOPNOTSUPP;
- }
-
if (!inode_trylock(inode)) {
if (iocb->ki_flags & IOCB_NOWAIT)
return -EAGAIN;
inode_lock(inode);
}
+ ret = check_write_restriction(inode);
+ if (ret)
+ goto out;
+
+ if (is_compressed(ni) && (iocb->ki_flags & IOCB_DIRECT)) {
+ ntfs_inode_warn(inode, "direct i/o + compressed not supported");
+ ret = -EOPNOTSUPP;
+ goto out;
+ }
+
ret = generic_write_checks(iocb, from);
if (ret <= 0)
goto out;
diff --git a/fs/ntfs3/frecord.c b/fs/ntfs3/frecord.c
index 608634361a30..ed38014d1750 100644
--- a/fs/ntfs3/frecord.c
+++ b/fs/ntfs3/frecord.c
@@ -3057,8 +3057,7 @@ int ni_add_name(struct ntfs_inode *dir_ni, struct ntfs_inode *ni,
* ni_rename - Remove one name and insert new name.
*/
int ni_rename(struct ntfs_inode *dir_ni, struct ntfs_inode *new_dir_ni,
- struct ntfs_inode *ni, struct NTFS_DE *de, struct NTFS_DE *new_de,
- bool *is_bad)
+ struct ntfs_inode *ni, struct NTFS_DE *de, struct NTFS_DE *new_de)
{
int err;
struct NTFS_DE *de2 = NULL;
@@ -3081,8 +3080,8 @@ int ni_rename(struct ntfs_inode *dir_ni, struct ntfs_inode *new_dir_ni,
err = ni_add_name(new_dir_ni, ni, new_de);
if (!err) {
err = ni_remove_name(dir_ni, ni, de, &de2, &undo);
- if (err && ni_remove_name(new_dir_ni, ni, new_de, &de2, &undo))
- *is_bad = true;
+ WARN_ON(err && ni_remove_name(new_dir_ni, ni, new_de, &de2,
+ &undo));
}
/*
diff --git a/fs/ntfs3/index.c b/fs/ntfs3/index.c
index 78d20e4baa2c..1bf2a6593dec 100644
--- a/fs/ntfs3/index.c
+++ b/fs/ntfs3/index.c
@@ -2182,6 +2182,10 @@ static int indx_get_entry_to_replace(struct ntfs_index *indx,
e = hdr_first_de(&n->index->ihdr);
fnd_push(fnd, n, e);
+ if (!e) {
+ err = -EINVAL;
+ goto out;
+ }
if (!de_is_last(e)) {
/*
@@ -2203,6 +2207,10 @@ static int indx_get_entry_to_replace(struct ntfs_index *indx,
n = fnd->nodes[level];
te = hdr_first_de(&n->index->ihdr);
+ if (!te) {
+ err = -EINVAL;
+ goto out;
+ }
/* Copy the candidate entry into the replacement entry buffer. */
re = kmalloc(le16_to_cpu(te->size) + sizeof(u64), GFP_NOFS);
if (!re) {
diff --git a/fs/ntfs3/inode.c b/fs/ntfs3/inode.c
index a1e11228dafd..9077c7b62733 100644
--- a/fs/ntfs3/inode.c
+++ b/fs/ntfs3/inode.c
@@ -805,6 +805,10 @@ static ssize_t ntfs_direct_IO(struct kiocb *iocb, struct iov_iter *iter)
ret = 0;
goto out;
}
+ if (is_compressed(ni)) {
+ ret = 0;
+ goto out;
+ }
ret = blockdev_direct_IO(iocb, inode, iter,
wr ? ntfs_get_block_direct_IO_W :
@@ -1098,10 +1102,10 @@ int inode_read_data(struct inode *inode, void *data, size_t bytes)
* Number of bytes for REPARSE_DATA_BUFFER(IO_REPARSE_TAG_SYMLINK)
* for unicode string of @uni_len length.
*/
-static inline u32 ntfs_reparse_bytes(u32 uni_len)
+static inline u32 ntfs_reparse_bytes(u32 uni_len, bool is_absolute)
{
/* Header + unicode string + decorated unicode string. */
- return sizeof(short) * (2 * uni_len + 4) +
+ return sizeof(short) * (2 * uni_len + (is_absolute ? 4 : 0)) +
offsetof(struct REPARSE_DATA_BUFFER,
SymbolicLinkReparseBuffer.PathBuffer);
}
@@ -1114,8 +1118,11 @@ ntfs_create_reparse_buffer(struct ntfs_sb_info *sbi, const char *symname,
struct REPARSE_DATA_BUFFER *rp;
__le16 *rp_name;
typeof(rp->SymbolicLinkReparseBuffer) *rs;
+ bool is_absolute;
- rp = kzalloc(ntfs_reparse_bytes(2 * size + 2), GFP_NOFS);
+ is_absolute = (strlen(symname) > 1 && symname[1] == ':');
+
+ rp = kzalloc(ntfs_reparse_bytes(2 * size + 2, is_absolute), GFP_NOFS);
if (!rp)
return ERR_PTR(-ENOMEM);
@@ -1130,7 +1137,7 @@ ntfs_create_reparse_buffer(struct ntfs_sb_info *sbi, const char *symname,
goto out;
/* err = the length of unicode name of symlink. */
- *nsize = ntfs_reparse_bytes(err);
+ *nsize = ntfs_reparse_bytes(err, is_absolute);
if (*nsize > sbi->reparse.max_size) {
err = -EFBIG;
@@ -1150,7 +1157,7 @@ ntfs_create_reparse_buffer(struct ntfs_sb_info *sbi, const char *symname,
/* PrintName + SubstituteName. */
rs->SubstituteNameOffset = cpu_to_le16(sizeof(short) * err);
- rs->SubstituteNameLength = cpu_to_le16(sizeof(short) * err + 8);
+ rs->SubstituteNameLength = cpu_to_le16(sizeof(short) * err + (is_absolute ? 8 : 0));
rs->PrintNameLength = rs->SubstituteNameOffset;
/*
@@ -1158,16 +1165,18 @@ ntfs_create_reparse_buffer(struct ntfs_sb_info *sbi, const char *symname,
* parse this path.
* 0-absolute path 1- relative path (SYMLINK_FLAG_RELATIVE).
*/
- rs->Flags = 0;
+ rs->Flags = cpu_to_le32(is_absolute ? 0 : SYMLINK_FLAG_RELATIVE);
- memmove(rp_name + err + 4, rp_name, sizeof(short) * err);
+ memmove(rp_name + err + (is_absolute ? 4 : 0), rp_name, sizeof(short) * err);
- /* Decorate SubstituteName. */
- rp_name += err;
- rp_name[0] = cpu_to_le16('\\');
- rp_name[1] = cpu_to_le16('?');
- rp_name[2] = cpu_to_le16('?');
- rp_name[3] = cpu_to_le16('\\');
+ if (is_absolute) {
+ /* Decorate SubstituteName. */
+ rp_name += err;
+ rp_name[0] = cpu_to_le16('\\');
+ rp_name[1] = cpu_to_le16('?');
+ rp_name[2] = cpu_to_le16('?');
+ rp_name[3] = cpu_to_le16('\\');
+ }
return rp;
out:
@@ -2108,5 +2117,6 @@ const struct address_space_operations ntfs_aops_cmpr = {
.read_folio = ntfs_read_folio,
.readahead = ntfs_readahead,
.dirty_folio = block_dirty_folio,
+ .direct_IO = ntfs_direct_IO,
};
// clang-format on
diff --git a/fs/ntfs3/namei.c b/fs/ntfs3/namei.c
index abf7e81584a9..71a5a959a48c 100644
--- a/fs/ntfs3/namei.c
+++ b/fs/ntfs3/namei.c
@@ -244,7 +244,7 @@ static int ntfs_rename(struct mnt_idmap *idmap, struct inode *dir,
struct ntfs_inode *ni = ntfs_i(inode);
struct inode *new_inode = d_inode(new_dentry);
struct NTFS_DE *de, *new_de;
- bool is_same, is_bad;
+ bool is_same;
/*
* de - memory of PATH_MAX bytes:
* [0-1024) - original name (dentry->d_name)
@@ -313,12 +313,8 @@ static int ntfs_rename(struct mnt_idmap *idmap, struct inode *dir,
if (dir_ni != new_dir_ni)
ni_lock_dir2(new_dir_ni);
- is_bad = false;
- err = ni_rename(dir_ni, new_dir_ni, ni, de, new_de, &is_bad);
- if (is_bad) {
- /* Restore after failed rename failed too. */
- _ntfs_bad_inode(inode);
- } else if (!err) {
+ err = ni_rename(dir_ni, new_dir_ni, ni, de, new_de);
+ if (!err) {
simple_rename_timestamp(dir, dentry, new_dir, new_dentry);
mark_inode_dirty(inode);
mark_inode_dirty(dir);
diff --git a/fs/ntfs3/ntfs_fs.h b/fs/ntfs3/ntfs_fs.h
index cd8e8374bb5a..ff7f241a25b2 100644
--- a/fs/ntfs3/ntfs_fs.h
+++ b/fs/ntfs3/ntfs_fs.h
@@ -584,8 +584,7 @@ int ni_add_name(struct ntfs_inode *dir_ni, struct ntfs_inode *ni,
struct NTFS_DE *de);
int ni_rename(struct ntfs_inode *dir_ni, struct ntfs_inode *new_dir_ni,
- struct ntfs_inode *ni, struct NTFS_DE *de, struct NTFS_DE *new_de,
- bool *is_bad);
+ struct ntfs_inode *ni, struct NTFS_DE *de, struct NTFS_DE *new_de);
bool ni_is_dirty(struct inode *inode);
int ni_set_compress(struct inode *inode, bool compr);
generated by cgit v1.2.3 (git 2.0.4) at 2025-10-16 05:12:53 +0000