Re: [PATCH v2] fscrypto: make filename crypto functions return 0 on success

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On Thu, Sep 15, 2016 at 01:24:01PM -0700, Jaegeuk Kim wrote:
> On Thu, Sep 15, 2016 at 10:28:49AM -0700, Eric Biggers wrote:
> > Several filename crypto functions: fname_decrypt(),
> > fscrypt_fname_disk_to_usr(), and fscrypt_fname_usr_to_disk(), returned
> > the output length on success or -errno on failure.  However, the output
> > length was redundant with the value written to 'oname->len'.  It is also
> > potentially error-prone to make callers have to check for '< 0' instead
> > of '!= 0'.
> > 
> > Therefore, make these functions return 0 instead of a length, and make
> > the callers who cared about the return value being a length use
> > 'oname->len' instead.  For consistency also make other callers check for
> > a nonzero result rather than a negative result.
> > 
> > This change also fixes the inconsistency of fname_encrypt() actually
> > already returning 0 on success, not a length like the other filename
> > crypto functions and as documented in its function comment.
> > 
> > Signed-off-by: Eric Biggers <ebiggers@xxxxxxxxxx>
> 
> Acked-by: Jaegeuk Kim <jaegeuk@xxxxxxxxxx>

Thanks, applied.

						- Ted
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