Date: Thu, 15 Jul 1999 18:34:42 -0400 From: Tim Vanderhoek <vanderh@ecf.utoronto.ca> To: Sheldon Hearn <sheldonh@uunet.co.za> Cc: Garance A Drosihn <drosih@rpi.edu>, Paul Hart <hart@iserver.com>, freebsd-hackers@FreeBSD.org Subject: Re: OpenBSD's strlcpy(3) and strlcat(3) Message-ID: <19990715183442.A53661@mad> In-Reply-To: <79492.932076931@axl.noc.iafrica.com>; from Sheldon Hearn on Fri, Jul 16, 1999 at 12:15:31AM %2B0200 References: <v04011702b3b3f07b38ae@[128.113.24.47]> <79492.932076931@axl.noc.iafrica.com>
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On Fri, Jul 16, 1999 at 12:15:31AM +0200, Sheldon Hearn wrote:
>
> As I understand it, the goal here is to return to the caller the number
> of bytes copied (however you represent it), so that the caller can
> easily determine whether or not dst is safe for operations demanding a
> null-terminated string.
[...]
> size_t
> fooncat(char *s, const char *append, size_t count)
>
> where the return value is the number of bytes {copied,appended}.
Eeks! This will quickly lead to code like
if (fooncat(string, append, sizeof(string)) != strlen(append))
...
which is rather evil, given that the second strlen(append) would be
completely gratuitous if it weren't for the interface you're
suggesting.
--
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