Ntfs3 for 5.19

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Merge tag 'ntfs3_for_5.19' of https://github.com/Paragon-Software-Group/linux-ntfs3

Pull ntfs3 updates from Konstantin Komarov:

 - fix some memory leaks and panic

 - fixed xfstests (tested on x86_64): generic/092 generic/099
   generic/228 generic/240 generic/307 generic/444

 - fix some typos, dead code, etc

* tag 'ntfs3_for_5.19' of https://github.com/Paragon-Software-Group/linux-ntfs3:
  fs/ntfs3: provide block_invalidate_folio to fix memory leak
  fs/ntfs3: Fix invalid free in log_replay
  fs/ntfs3: Update valid size if -EIOCBQUEUED
  fs/ntfs3: Check new size for limits
  fs/ntfs3: Fix fiemap + fix shrink file size (to remove preallocated space)
  fs/ntfs3: In function ntfs_set_acl_ex do not change inode->i_mode if called from function ntfs_init_acl
  fs/ntfs3: Optimize locking in ntfs_save_wsl_perm
  fs/ntfs3: Update i_ctime when xattr is added
  fs/ntfs3: Restore ntfs_xattr_get_acl and ntfs_xattr_set_acl functions
  fs/ntfs3: Keep preallocated only if option prealloc enabled
  fs/ntfs3: Fix some memory leaks in an error handling path of 'log_replay()'

fs/ntfs3/file.c

@@ -492,7 +492,7 @@ static int ntfs_truncate(struct inode *inode, loff_t new_size)
 
 	down_write(&ni->file.run_lock);
 	err = attr_set_size(ni, ATTR_DATA, NULL, 0, &ni->file.run, new_size,
-			    &new_valid, true, NULL);
+			    &new_valid, ni->mi.sbi->options->prealloc, NULL);
 	up_write(&ni->file.run_lock);
 
 	if (new_valid < ni->i_valid)
@@ -659,7 +659,13 @@ static long ntfs_fallocate(struct file *file, int mode, loff_t vbo, loff_t len)
 		/*
 		 * Normal file: Allocate clusters, do not change 'valid' size.
 		 */
-		err = ntfs_set_size(inode, max(end, i_size));
+		loff_t new_size = max(end, i_size);
+
+		err = inode_newsize_ok(inode, new_size);
+		if (err)
+			goto out;
+
+		err = ntfs_set_size(inode, new_size);
 		if (err)
 			goto out;
 
@@ -759,7 +765,7 @@ int ntfs3_setattr(struct user_namespace *mnt_userns, struct dentry *dentry,
 		}
 		inode_dio_wait(inode);
 
-		if (attr->ia_size < oldsize)
+		if (attr->ia_size <= oldsize)
 			err = ntfs_truncate(inode, attr->ia_size);
 		else if (attr->ia_size > oldsize)
 			err = ntfs_extend(inode, attr->ia_size, 0, NULL);

fs/ntfs3/frecord.c

@@ -1964,10 +1964,8 @@ int ni_fiemap(struct ntfs_inode *ni, struct fiemap_extent_info *fieinfo,
 
 		vcn += clen;
 
-		if (vbo + bytes >= end) {
+		if (vbo + bytes >= end)
 			bytes = end - vbo;
-			flags |= FIEMAP_EXTENT_LAST;
-		}
 
 		if (vbo + bytes <= valid) {
 			;
@@ -1977,6 +1975,9 @@ int ni_fiemap(struct ntfs_inode *ni, struct fiemap_extent_info *fieinfo,
 			/* vbo < valid && valid < vbo + bytes */
 			u64 dlen = valid - vbo;
 
+			if (vbo + dlen >= end)
+				flags |= FIEMAP_EXTENT_LAST;
+
 			err = fiemap_fill_next_extent(fieinfo, vbo, lbo, dlen,
 						      flags);
 			if (err < 0)
@@ -1995,6 +1996,9 @@ int ni_fiemap(struct ntfs_inode *ni, struct fiemap_extent_info *fieinfo,
 			flags |= FIEMAP_EXTENT_UNWRITTEN;
 		}
 
+		if (vbo + bytes >= end)
+			flags |= FIEMAP_EXTENT_LAST;
+
 		err = fiemap_fill_next_extent(fieinfo, vbo, lbo, bytes, flags);
 		if (err < 0)
 			break;

fs/ntfs3/fslog.c

@@ -1185,8 +1185,6 @@ static int log_read_rst(struct ntfs_log *log, u32 l_size, bool first,
 	if (!r_page)
 		return -ENOMEM;
 
-	memset(info, 0, sizeof(struct restart_info));
-
 	/* Determine which restart area we are looking for. */
 	if (first) {
 		vbo = 0;
@@ -3791,10 +3789,11 @@ int log_replay(struct ntfs_inode *ni, bool *initialized)
 	if (!log)
 		return -ENOMEM;
 
+	memset(&rst_info, 0, sizeof(struct restart_info));
+
 	log->ni = ni;
 	log->l_size = l_size;
 	log->one_page_buf = kmalloc(page_size, GFP_NOFS);
-
 	if (!log->one_page_buf) {
 		err = -ENOMEM;
 		goto out;
@@ -3842,6 +3841,7 @@ int log_replay(struct ntfs_inode *ni, bool *initialized)
 	if (rst_info.vbo)
 		goto check_restart_area;
 
+	memset(&rst_info2, 0, sizeof(struct restart_info));
 	err = log_read_rst(log, l_size, false, &rst_info2);
 
 	/* Determine which restart area to use. */
@@ -4085,8 +4085,10 @@ process_log:
 		if (client == LFS_NO_CLIENT_LE) {
 			/* Insert "NTFS" client LogFile. */
 			client = ra->client_idx[0];
-			if (client == LFS_NO_CLIENT_LE)
-				return -EINVAL;
+			if (client == LFS_NO_CLIENT_LE) {
+				err = -EINVAL;
+				goto out;
+			}
 
 			t16 = le16_to_cpu(client);
 			cr = ca + t16;

fs/ntfs3/inode.c

@@ -758,6 +758,7 @@ static ssize_t ntfs_direct_IO(struct kiocb *iocb, struct iov_iter *iter)
 	loff_t vbo = iocb->ki_pos;
 	loff_t end;
 	int wr = iov_iter_rw(iter) & WRITE;
+	size_t iter_count = iov_iter_count(iter);
 	loff_t valid;
 	ssize_t ret;
 
@@ -771,10 +772,13 @@ static ssize_t ntfs_direct_IO(struct kiocb *iocb, struct iov_iter *iter)
 				 wr ? ntfs_get_block_direct_IO_W
 				    : ntfs_get_block_direct_IO_R);
 
-	if (ret <= 0)
+	if (ret > 0)
+		end = vbo + ret;
+	else if (wr && ret == -EIOCBQUEUED)
+		end = vbo + iter_count;
+	else
 		goto out;
 
-	end = vbo + ret;
 	valid = ni->i_valid;
 	if (wr) {
 		if (end > valid && !S_ISBLK(inode->i_mode)) {
@@ -1950,6 +1954,7 @@ const struct address_space_operations ntfs_aops = {
 	.direct_IO	= ntfs_direct_IO,
 	.bmap		= ntfs_bmap,
 	.dirty_folio	= block_dirty_folio,
+	.invalidate_folio = block_invalidate_folio,
 };
 
 const struct address_space_operations ntfs_aops_cmpr = {

fs/ntfs3/xattr.c

@@ -112,7 +112,7 @@ static int ntfs_read_ea(struct ntfs_inode *ni, struct EA_FULL **ea,
 		return -ENOMEM;
 
 	if (!size) {
-		;
+		/* EA info persists, but xattr is empty. Looks like EA problem. */
 	} else if (attr_ea->non_res) {
 		struct runs_tree run;
 
@@ -259,7 +259,7 @@ out:
 
 static noinline int ntfs_set_ea(struct inode *inode, const char *name,
 				size_t name_len, const void *value,
-				size_t val_size, int flags)
+				size_t val_size, int flags, bool locked)
 {
 	struct ntfs_inode *ni = ntfs_i(inode);
 	struct ntfs_sb_info *sbi = ni->mi.sbi;
@@ -278,7 +278,8 @@ static noinline int ntfs_set_ea(struct inode *inode, const char *name,
 	u64 new_sz;
 	void *p;
 
-	ni_lock(ni);
+	if (!locked)
+		ni_lock(ni);
 
 	run_init(&ea_run);
 
@@ -467,7 +468,8 @@ update_ea:
 	mark_inode_dirty(&ni->vfs_inode);
 
 out:
-	ni_unlock(ni);
+	if (!locked)
+		ni_unlock(ni);
 
 	run_close(&ea_run);
 	kfree(ea_all);
@@ -541,7 +543,7 @@ struct posix_acl *ntfs_get_acl(struct inode *inode, int type, bool rcu)
 
 static noinline int ntfs_set_acl_ex(struct user_namespace *mnt_userns,
 				    struct inode *inode, struct posix_acl *acl,
-				    int type)
+				    int type, bool init_acl)
 {
 	const char *name;
 	size_t size, name_len;
@@ -554,8 +556,9 @@ static noinline int ntfs_set_acl_ex(struct user_namespace *mnt_userns,
 
 	switch (type) {
 	case ACL_TYPE_ACCESS:
-		if (acl) {
-			umode_t mode = inode->i_mode;
+		/* Do not change i_mode if we are in init_acl */
+		if (acl && !init_acl) {
+			umode_t mode;
 
 			err = posix_acl_update_mode(mnt_userns, inode, &mode,
 						    &acl);
@@ -598,7 +601,7 @@ static noinline int ntfs_set_acl_ex(struct user_namespace *mnt_userns,
 		flags = 0;
 	}
 
-	err = ntfs_set_ea(inode, name, name_len, value, size, flags);
+	err = ntfs_set_ea(inode, name, name_len, value, size, flags, 0);
 	if (err == -ENODATA && !size)
 		err = 0; /* Removing non existed xattr. */
 	if (!err)
@@ -616,7 +619,68 @@ out:
 int ntfs_set_acl(struct user_namespace *mnt_userns, struct inode *inode,
 		 struct posix_acl *acl, int type)
 {
-	return ntfs_set_acl_ex(mnt_userns, inode, acl, type);
+	return ntfs_set_acl_ex(mnt_userns, inode, acl, type, false);
+}
+
+static int ntfs_xattr_get_acl(struct user_namespace *mnt_userns,
+			      struct inode *inode, int type, void *buffer,
+			      size_t size)
+{
+	struct posix_acl *acl;
+	int err;
+
+	if (!(inode->i_sb->s_flags & SB_POSIXACL)) {
+		ntfs_inode_warn(inode, "add mount option \"acl\" to use acl");
+		return -EOPNOTSUPP;
+	}
+
+	acl = ntfs_get_acl(inode, type, false);
+	if (IS_ERR(acl))
+		return PTR_ERR(acl);
+
+	if (!acl)
+		return -ENODATA;
+
+	err = posix_acl_to_xattr(mnt_userns, acl, buffer, size);
+	posix_acl_release(acl);
+
+	return err;
+}
+
+static int ntfs_xattr_set_acl(struct user_namespace *mnt_userns,
+			      struct inode *inode, int type, const void *value,
+			      size_t size)
+{
+	struct posix_acl *acl;
+	int err;
+
+	if (!(inode->i_sb->s_flags & SB_POSIXACL)) {
+		ntfs_inode_warn(inode, "add mount option \"acl\" to use acl");
+		return -EOPNOTSUPP;
+	}
+
+	if (!inode_owner_or_capable(mnt_userns, inode))
+		return -EPERM;
+
+	if (!value) {
+		acl = NULL;
+	} else {
+		acl = posix_acl_from_xattr(mnt_userns, value, size);
+		if (IS_ERR(acl))
+			return PTR_ERR(acl);
+
+		if (acl) {
+			err = posix_acl_valid(mnt_userns, acl);
+			if (err)
+				goto release_and_out;
+		}
+	}
+
+	err = ntfs_set_acl(mnt_userns, inode, acl, type);
+
+release_and_out:
+	posix_acl_release(acl);
+	return err;
 }
 
 /*
@@ -636,7 +700,7 @@ int ntfs_init_acl(struct user_namespace *mnt_userns, struct inode *inode,
 
 	if (default_acl) {
 		err = ntfs_set_acl_ex(mnt_userns, inode, default_acl,
-				      ACL_TYPE_DEFAULT);
+				      ACL_TYPE_DEFAULT, true);
 		posix_acl_release(default_acl);
 	} else {
 		inode->i_default_acl = NULL;
@@ -647,7 +711,7 @@ int ntfs_init_acl(struct user_namespace *mnt_userns, struct inode *inode,
 	else {
 		if (!err)
 			err = ntfs_set_acl_ex(mnt_userns, inode, acl,
-					      ACL_TYPE_ACCESS);
+					      ACL_TYPE_ACCESS, true);
 		posix_acl_release(acl);
 	}
 
@@ -785,6 +849,23 @@ static int ntfs_getxattr(const struct xattr_handler *handler, struct dentry *de,
 		goto out;
 	}
 
+#ifdef CONFIG_NTFS3_FS_POSIX_ACL
+	if ((name_len == sizeof(XATTR_NAME_POSIX_ACL_ACCESS) - 1 &&
+	     !memcmp(name, XATTR_NAME_POSIX_ACL_ACCESS,
+		     sizeof(XATTR_NAME_POSIX_ACL_ACCESS))) ||
+	    (name_len == sizeof(XATTR_NAME_POSIX_ACL_DEFAULT) - 1 &&
+	     !memcmp(name, XATTR_NAME_POSIX_ACL_DEFAULT,
+		     sizeof(XATTR_NAME_POSIX_ACL_DEFAULT)))) {
+		/* TODO: init_user_ns? */
+		err = ntfs_xattr_get_acl(
+			&init_user_ns, inode,
+			name_len == sizeof(XATTR_NAME_POSIX_ACL_ACCESS) - 1
+				? ACL_TYPE_ACCESS
+				: ACL_TYPE_DEFAULT,
+			buffer, size);
+		goto out;
+	}
+#endif
 	/* Deal with NTFS extended attribute. */
 	err = ntfs_get_ea(inode, name, name_len, buffer, size, NULL);
 
@@ -897,10 +978,29 @@ set_new_fa:
 		goto out;
 	}
 
+#ifdef CONFIG_NTFS3_FS_POSIX_ACL
+	if ((name_len == sizeof(XATTR_NAME_POSIX_ACL_ACCESS) - 1 &&
+	     !memcmp(name, XATTR_NAME_POSIX_ACL_ACCESS,
+		     sizeof(XATTR_NAME_POSIX_ACL_ACCESS))) ||
+	    (name_len == sizeof(XATTR_NAME_POSIX_ACL_DEFAULT) - 1 &&
+	     !memcmp(name, XATTR_NAME_POSIX_ACL_DEFAULT,
+		     sizeof(XATTR_NAME_POSIX_ACL_DEFAULT)))) {
+		err = ntfs_xattr_set_acl(
+			mnt_userns, inode,
+			name_len == sizeof(XATTR_NAME_POSIX_ACL_ACCESS) - 1
+				? ACL_TYPE_ACCESS
+				: ACL_TYPE_DEFAULT,
+			value, size);
+		goto out;
+	}
+#endif
 	/* Deal with NTFS extended attribute. */
-	err = ntfs_set_ea(inode, name, name_len, value, size, flags);
+	err = ntfs_set_ea(inode, name, name_len, value, size, flags, 0);
 
 out:
+	inode->i_ctime = current_time(inode);
+	mark_inode_dirty(inode);
+
 	return err;
 }
 
@@ -913,35 +1013,37 @@ int ntfs_save_wsl_perm(struct inode *inode)
 {
 	int err;
 	__le32 value;
+	struct ntfs_inode *ni = ntfs_i(inode);
 
-	/* TODO: refactor this, so we don't lock 4 times in ntfs_set_ea */
+	ni_lock(ni);
 	value = cpu_to_le32(i_uid_read(inode));
 	err = ntfs_set_ea(inode, "$LXUID", sizeof("$LXUID") - 1, &value,
-			  sizeof(value), 0);
+			  sizeof(value), 0, true); /* true == already locked. */
 	if (err)
 		goto out;
 
 	value = cpu_to_le32(i_gid_read(inode));
 	err = ntfs_set_ea(inode, "$LXGID", sizeof("$LXGID") - 1, &value,
-			  sizeof(value), 0);
+			  sizeof(value), 0, true);
 	if (err)
 		goto out;
 
 	value = cpu_to_le32(inode->i_mode);
 	err = ntfs_set_ea(inode, "$LXMOD", sizeof("$LXMOD") - 1, &value,
-			  sizeof(value), 0);
+			  sizeof(value), 0, true);
 	if (err)
 		goto out;
 
 	if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) {
 		value = cpu_to_le32(inode->i_rdev);
 		err = ntfs_set_ea(inode, "$LXDEV", sizeof("$LXDEV") - 1, &value,
-				  sizeof(value), 0);
+				  sizeof(value), 0, true);
 		if (err)
 			goto out;
 	}
 
 out:
+	ni_unlock(ni);
 	/* In case of error should we delete all WSL xattr? */
 	return err;
 }