Re: [PATCH 1/2] fs/ntfs3: Remove unnecessary functions

[Kari Argillander <kari.argillander@gmail.com>]

On Fri, Oct 01, 2021 at 07:02:12PM +0300, Konstantin Komarov wrote:
> We don't need ntfs_xattr_get_acl and ntfs_xattr_set_acl.
> There are ntfs_get_acl_ex and ntfs_set_acl_ex.

I just bisect this commit after tests

"generic/099,generic/105,generic/307,generic/318,generic/319,generic/375,generic/444"

fails for me. Fails happends because mount option acl was not defined.
Before they where skipped, but now fail occurs. Also generic/099 was
passing if acl mount option was defined, but after this patch it also
fail. Every other test fail for me as well, but that is not related to
this patch.

So should we revert or do you make new patch to fix the issue or do you
think we won't have any issue here?

  Argillander

> Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
> ---
>  fs/ntfs3/xattr.c | 94 ------------------------------------------------
>  1 file changed, 94 deletions(-)
> 
> diff --git a/fs/ntfs3/xattr.c b/fs/ntfs3/xattr.c
> index 83bbee277e12..111355692163 100644
> --- a/fs/ntfs3/xattr.c
> +++ b/fs/ntfs3/xattr.c
> @@ -621,67 +621,6 @@ int ntfs_set_acl(struct user_namespace *mnt_userns, struct inode *inode,
>  	return ntfs_set_acl_ex(mnt_userns, inode, acl, type, 0);
>  }
>  
> -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);
> -	if (IS_ERR(acl))
> -		return PTR_ERR(acl);
> -
> -	if (!acl)
> -		return -ENODATA;
> -
> -	err = posix_acl_to_xattr(mnt_userns, acl, buffer, size);
> -	ntfs_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:
> -	ntfs_posix_acl_release(acl);
> -	return err;
> -}
> -
>  /*
>   * ntfs_init_acl - Initialize the ACLs of a new inode.
>   *
> @@ -848,23 +787,6 @@ 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);
>  
> @@ -977,22 +899,6 @@ static noinline int ntfs_setxattr(const struct xattr_handler *handler,
>  		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, 0);
>  
> -- 
> 2.33.0
>