linux-ext4 - Re: [PATCH V2 4/7] Add S_VERITY and IS

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Date:   Tue, 4 Dec 2018 15:49:09 -0800
From:   Eric Biggers <ebiggers@...nel.org>
To:     Chandan Rajendra <chandan@...ux.vnet.ibm.com>
Cc:     linux-ext4@...r.kernel.org, linux-f2fs-devel@...ts.sourceforge.net,
        linux-doc@...r.kernel.org, linux-mips@...ux-mips.org,
        linux-s390@...r.kernel.org, linux-mtd@...ts.infradead.org,
        linux-fsdevel@...r.kernel.org, tytso@....edu,
        adilger.kernel@...ger.ca, jaegeuk@...nel.org, yuchao0@...wei.com,
        corbet@....net, ralf@...ux-mips.org, paul.burton@...s.com,
        jhogan@...nel.org, green.hu@...il.com, deanbo422@...il.com,
        schwidefsky@...ibm.com, heiko.carstens@...ibm.com, richard@....at,
        dedekind1@...il.com, adrian.hunter@...el.com,
        viro@...iv.linux.org.uk
Subject: Re: [PATCH V2 4/7] Add S_VERITY and IS_VERITY()

On Tue, Dec 04, 2018 at 03:26:47PM +0530, Chandan Rajendra wrote:
> Similar to S_ENCRYPTED/IS_ENCRYPTED(), this commit adds
> S_VERITY/IS_VERITY() to be able to check if a VFS inode has verity
> information associated with it.
> 
> Signed-off-by: Chandan Rajendra <chandan@...ux.vnet.ibm.com>
> ---
>  include/linux/fs.h | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/include/linux/fs.h b/include/linux/fs.h
> index 389a35e028bf..de602d9f8d0e 100644
> --- a/include/linux/fs.h
> +++ b/include/linux/fs.h
> @@ -1938,6 +1938,7 @@ struct super_operations {
>  #define S_DAX		0	/* Make all the DAX code disappear */
>  #endif
>  #define S_ENCRYPTED	16384	/* Encrypted file (using fs/crypto/) */
> +#define S_VERITY	32768	/* Verity file (using fs/verity/) */
>  
>  /*
>   * Note that nosuid etc flags are inode-specific: setting some file-system
> @@ -1978,6 +1979,7 @@ static inline bool sb_rdonly(const struct super_block *sb) { return sb->s_flags
>  #define IS_NOSEC(inode)		((inode)->i_flags & S_NOSEC)
>  #define IS_DAX(inode)		((inode)->i_flags & S_DAX)
>  #define IS_ENCRYPTED(inode)	((inode)->i_flags & S_ENCRYPTED)
> +#define IS_VERITY(inode)	((inode)->i_flags & S_VERITY)
>  
>  #define IS_WHITEOUT(inode)	(S_ISCHR(inode->i_mode) && \
>  				 (inode)->i_rdev == WHITEOUT_DEV)
> -- 
> 2.19.1
> 

Reviewed-by: Eric Biggers <ebiggers@...gle.com>