NTFS: Enable ATTR_SIZE attribute changes in ntfs_setattr(). This completes (e9438250) · Commits · 戴 / test

fs/ntfs/ChangeLog

+7 −0

Original line number	Diff line number	Diff line
		@@ -50,6 +50,13 @@ ToDo/Notes:
		but not the initialized size can be extended, too.
		- Implement fs/ntfs/inode.[hc]::ntfs_truncate(). It only supports
		uncompressed and unencrypted files.
		- Enable ATTR_SIZE attribute changes in ntfs_setattr(). This completes
		the initial implementation of file truncation. Now both open(2)ing
		a file with the O_TRUNC flag and the {,f}truncate(2) system calls
		will resize a file appropriately. The limitations are that only
		uncompressed and unencrypted files are supported. Also, there is
		only very limited support for highly fragmented files (the ones whose
		$DATA attribute is split into multiple attribute extents).

		2.1.24 - Lots of bug fixes and support more clean journal states.

+15 −8

Original line number	Diff line number	Diff line
		@@ -2845,8 +2845,7 @@ int ntfs_setattr(struct dentry dentry, struct iattr attr)

		err = inode_change_ok(vi, attr);
		if (err)
		return err;

		goto out;
		/* We do not support NTFS ACLs yet. */
		if (ia_valid & (ATTR_UID \| ATTR_GID \| ATTR_MODE)) {
		ntfs_warning(vi->i_sb, "Changes in user/group/mode are not "
		@@ -2854,14 +2853,22 @@ int ntfs_setattr(struct dentry dentry, struct iattr attr)
		err = -EOPNOTSUPP;
		goto out;
		}

		if (ia_valid & ATTR_SIZE) {
		if (attr->ia_size != i_size_read(vi)) {
		ntfs_warning(vi->i_sb, "Changes in inode size are not "
		"supported yet, ignoring.");
		ntfs_inode *ni = NTFS_I(vi);
		/*
		* FIXME: For now we do not support resizing of
		* compressed or encrypted files yet.
		*/
		if (NInoCompressed(ni) \|\| NInoEncrypted(ni)) {
		ntfs_warning(vi->i_sb, "Changes in inode size "
		"are not supported yet for "
		"%s files, ignoring.",
		NInoCompressed(ni) ?
		"compressed" : "encrypted");
		err = -EOPNOTSUPP;
		// TODO: Implement...
		// err = vmtruncate(vi, attr->ia_size);
		} else
		err = vmtruncate(vi, attr->ia_size);
		if (err \|\| ia_valid == ATTR_SIZE)
		goto out;
		} else {