From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Cc: Andrew Morton <akpm@linux-foundation.org>, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v1 3/7] test_hexdump: go through all possible lengths of buffer
Date: Fri, 20 Nov 2015 18:58:04 +0200 [thread overview]
Message-ID: <1448038684.31665.179.camel@linux.intel.com> (raw)
In-Reply-To: <87twois3or.fsf@rasmusvillemoes.dk>
On Thu, 2015-11-19 at 11:07 +0100, Rasmus Villemoes wrote:
> On Wed, Nov 11 2015, Andy Shevchenko <andriy.shevchenko@linux.intel.c
> om> wrote:
>
> > When test for overflow do iterate the buffer length in a range
> > 0 .. BUF_SIZE.
> >
> > Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
> > ---
> > lib/test_hexdump.c | 20 ++++++++++----------
> > 1 file changed, 10 insertions(+), 10 deletions(-)
> >
> > diff --git a/lib/test_hexdump.c b/lib/test_hexdump.c
> > index ed7c6a7..15a6440 100644
> > --- a/lib/test_hexdump.c
> > +++ b/lib/test_hexdump.c
> > @@ -126,17 +126,17 @@ static void __init test_hexdump_set(int
> > rowsize, bool ascii)
> > test_hexdump(len, rowsize, 1, ascii);
> > }
> >
> > -static void __init test_hexdump_overflow(bool ascii)
> > +static void __init test_hexdump_overflow(size_t buflen, bool
> > ascii)
> > {
> > - char buf[56];
> > + char buf[TEST_HEXDUMP_BUF_SIZE];
> > const char *t = test_data_1_le[0];
> > - size_t l = get_random_int() % sizeof(buf);
> > + size_t l = buflen;
> > bool a;
> > int e, r;
> >
> > memset(buf, ' ', sizeof(buf));
> >
> > - r = hex_dump_to_buffer(data_b, 1, 16, 1, buf, l, ascii);
> > + r = hex_dump_to_buffer(data_b, 1, 16, 1, buf, buflen,
> > ascii);
> >
> > if (ascii)
> > e = 50;
> > @@ -144,7 +144,7 @@ static void __init test_hexdump_overflow(bool
> > ascii)
> > e = 2;
> > buf[e + 2] = '\0';
> >
> > - if (!l) {
> > + if (!buflen) {
> > a = r == e && buf[0] == ' ';
> > } else if (l < 3) {
> > a = r == e && buf[0] == '\0';
>
>
> Why keep the variable l when it is just a synonym for the new
> parameter buflen? It is quite confusing that you change some but not
> all occurrences of l to buflen. If you want to make the diff minimal
> but still have a descriptive parameter name, just keep the 'size_t l
> =
> buflen;' assignment and don't otherwise refer to buflen. But I think
> it's better to eliminate 'l' and just change everything to
> buflen. Don't mix the two approaches, though.
Okay, I got it for the future, though the series is already in linux-
next, so do we really need to re-hack half of it because of that?
I suppose everything else you noticed I may send as one follow up
patch.
>
> Rasmus
--
Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Intel Finland Oy
next prev parent reply other threads:[~2015-11-20 16:57 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-11-11 16:35 [PATCH v1 0/7] hexdump: update test suite Andy Shevchenko
2015-11-11 16:35 ` [PATCH v1 1/7] test_hexdump: rename to test_hexdump Andy Shevchenko
2015-11-19 10:05 ` Rasmus Villemoes
2015-11-11 16:35 ` [PATCH v1 2/7] test_hexdump: introduce test_hexdump_prepare_test() helper Andy Shevchenko
2015-11-19 10:05 ` Rasmus Villemoes
2015-11-11 16:35 ` [PATCH v1 3/7] test_hexdump: go through all possible lengths of buffer Andy Shevchenko
2015-11-19 10:07 ` Rasmus Villemoes
2015-11-20 16:58 ` Andy Shevchenko [this message]
2015-11-23 8:59 ` Rasmus Villemoes
2015-11-26 15:22 ` Andy Shevchenko
2015-11-11 16:35 ` [PATCH v1 4/7] test_hexdump: replace magic numbers by their meaning Andy Shevchenko
2015-11-19 10:08 ` Rasmus Villemoes
2015-11-20 16:56 ` Andy Shevchenko
2015-11-11 16:35 ` [PATCH v1 5/7] test_hexdump: check all bytes in real buffer Andy Shevchenko
2015-11-19 10:11 ` Rasmus Villemoes
2015-11-20 16:55 ` Andy Shevchenko
2015-11-23 9:28 ` Rasmus Villemoes
2015-11-11 16:35 ` [PATCH v1 6/7] test_hexdump: test all possible group sizes for overflow Andy Shevchenko
2015-11-19 10:14 ` Rasmus Villemoes
2015-11-20 16:43 ` Andy Shevchenko
2015-11-23 9:36 ` Rasmus Villemoes
2015-11-11 16:35 ` [PATCH v1 7/7] test_hexdump: print statistics at the end Andy Shevchenko
2015-11-19 10:16 ` Rasmus Villemoes
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1448038684.31665.179.camel@linux.intel.com \
--to=andriy.shevchenko@linux.intel.com \
--cc=akpm@linux-foundation.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux@rasmusvillemoes.dk \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).