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Subject: Re: [PATCH 3/3] fs/ntfs3: Refactoring of ntfs_set_ea
From:   Joe Perches <joe@perches.com>
To:     Konstantin Komarov <almaz.alexandrovich@paragon-software.com>,
        ntfs3@lists.linux.dev
Cc:     linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org
Date:   Fri, 24 Sep 2021 09:31:41 -0700
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On Fri, 2021-09-24 at 19:16 +0300, Konstantin Komarov wrote:
> Make code more readable.
> Don't try to read zero bytes.
> Add warning when size of exteneded attribute exceeds limit.
[]
> diff --git a/fs/ntfs3/xattr.c b/fs/ntfs3/xattr.c
[]
> @@ -366,21 +368,22 @@ static noinline int ntfs_set_ea(struct inode *inode, const char *name,
[]
> +	ea_info.size = cpu_to_le32(size);
> +
> +	/*
> +	 * 1. Check ea_info.size_pack for overflow.
> +	 * 2. New attibute size must fit value from $AttrDef
> +	 */
> +	if (new_pack > 0xffff || size > sbi->ea_max_size) {
> +		ntfs_inode_warn(
> +			inode,
> +			"The size of exteneded attributes must not exceed 64K");

trivial typo of extended.  Pedants might suggest KiB.