linux-kernel - Re: [PATCH 12/12] net: use the common ascii hex helpers

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <1209773755.26173.114.camel@brick>
Date:	Fri, 02 May 2008 17:15:55 -0700
From:	Harvey Harrison <harvey.harrison@...il.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	davem@...emloft.net, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 12/12] net: use the common ascii hex helpers

On Fri, 2008-05-02 at 17:08 -0700, Andrew Morton wrote:
> > > Yup.  After a bit of testing and tyre-kicking I'll probably slip
> > > lib-add-ascii-hex-helper-functions.patch into mainline so that we can
> > > trickle all the *-use-the-common-ascii-hex-helpers.patch patches out to the
> > > various maintainers.
> > > 
> > 
> > I suppose the hex_asc array and hex_to_int could also use
> > EXPORT_SYMBOL().
> 
> gack.  How could you do all those patches without discovering this?  Please
> go give your QA staff a wedgie.

Sorry about the fat-fingered send, as before:

allyesconfig :(

> yes, hex_to_u8() is more specific and better defined than hex_to_int().
> 
> Although anally it should perhaps be two_digit_hex_to_ulong,
> four_digit_hex_to_ulong, etc.
> 
> ho hum, I'll drop them all.

int hex_char_to_int(char ch)
{
	return -1 if not [a-fA-F0-9]
}

int hex_to_u8(const char *buf, u8 *val)
int hex_to_u16(const char *buf, u16 *val)
int hex_to_u32(const char *buf, u32 *val)
int hex_to_u64(const char *buf, u64 *val)

Which return the number of chars read and reads up to a maximum of
2,4,8,16 chars respectively and returns early if a non-hex char
is encountered.

Thoughts?

Harvey

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/