Re: [pkcs11] Define constants for (CK_ULONG)-1

[Stef Walter <stefw@redhat.com>]

On 11.05.2013 00:30, Michael StJohns wrote:
> On 5/10/2013 8:31 AM, Stef Walter wrote:
> As discussed earlier on the mailing list, following are the
> modifications to the specification to be made in order to define
> constants for (CK_ULONG)-1.
> 
>> I went back and took a look at the source documents.  The only place
>> that this is used is as a return value of attribute length in
>> C_GetAttributeValue to indicate which of the attributes are invalid.  (I
>> searched for '-1' and the only place I found it - other than SHA-1 and
>> length-1 type constructs - was there).
>
>> So how about only CKL_INVALID_ATTRIBUTE = -1;
>

There are several kinds of dashes/hyphens used in a '-1' construct in
the document. See my edits below for all appropriate locations of -1
cast to CK_ULONG.

... snip

> In line with Peter's suggestion, three new constants are defined:
> 
>   CKA_INVALID
>   CKM_INVALID
>   CK_INVALID_LENGTH

In addition to their uses in the document. CKA_INVALID and CKM_INVALID
are useful when writing code. Many (most ?) of us have defined them.
This is similar to CK_INVALID_HANDLE which is not used in the document.

Cheers,

Stef