linux-kernel - Re: [PATCH v10 02/14] HP BIOSCFG driver

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Date:   Tue, 25 Apr 2023 12:30:59 +0200
From:   Hans de Goede <hdegoede@...hat.com>
To:     Pavel Machek <pavel@....cz>, Jorge Lopez <jorgealtxwork@...il.com>
Cc:     platform-driver-x86@...r.kernel.org, linux-kernel@...r.kernel.org,
        thomas@...ch.de
Subject: Re: [PATCH v10 02/14] HP BIOSCFG driver - biosattr-interface

Hi,

On 4/21/23 13:37, Pavel Machek wrote:
> Hi!
> 
>> Linux Security components are under development and not published yet.
>> The only linux component is the driver (hp bioscfg) at this time.
>> Other published security components are under Windows.
>>
>> Signed-off-by: Jorge Lopez <jorge.lopez2@...com>
> 
>> +/*
>> + * ascii_to_utf16_unicode -  Convert ascii string to UTF-16 unicode
>> + *
>> + * BIOS supports UTF-16 characters that are 2 bytes long.  No variable
>> + * multi-byte language supported.
>> + *
>> + * @p:   Unicode buffer address
>> + * @str: string to convert to unicode
>> + *
>> + * Returns a void pointer to the buffer containing unicode string
>> + */
>> +void *ascii_to_utf16_unicode(u16 *p, const u8 *str)
>> +{
> 
> Does this need to go to library somewhere?

This has already been discussed in earlier submissions
of the driver, the utf16 format is HP specific (prefixed
with a 16 bit le lenght, and the 0 length string needs
special encoding) so despite the name this is not generic.

It should probably be prefixed with hp_ because of this
though, to avoid potential symbol conflicts when builtin.

(and the same applies to other generic functions).

Regards,

Hans