From: Julia Lawall <julia.lawall@lip6.fr>
To: Joe Perches <joe@perches.com>
Cc: cocci <cocci@systeme.lip6.fr>, LKML <linux-kernel@vger.kernel.org>
Subject: Re: [Cocci] [Fwd: [PATCH 1/2] string: Add stracpy and stracpy_pad mechanisms]
Date: Tue, 23 Jul 2019 23:27:17 -0500 (CDT) [thread overview]
Message-ID: <alpine.DEB.2.21.1907232326360.2539@hadrien> (raw)
In-Reply-To: <d5993902fd44ce89915fab94f4db03f5081c3c8e.camel@perches.com>
On Tue, 23 Jul 2019, Joe Perches wrote:
> On Tue, 2019-07-23 at 22:54 -0500, Julia Lawall wrote:
> > A seantic patch and the resulting output for the case where the third
> > arugument is a constant is attached. Likewise the resulting output on a
> > recent linux-next.
> >
> > julia
>
> Nice. Thanks Julia
>
> A couple issues:
>
> There is a problem with conversions with assignments
> of strlcpy() so ideally the cocci script should make sure
> any return value was not used before conversion.
>
> This is not a provably good conversion:
>
> drivers/s390/char/sclp_ftp.c
> @@ -114,8 +114,7 @@ static int sclp_ftp_et7(const struct hmc
> sccb->evbuf.mdd.ftp.length = ftp->len;
> sccb->evbuf.mdd.ftp.bufaddr = virt_to_phys(ftp->buf);
>
> - len = strlcpy(sccb->evbuf.mdd.ftp.fident, ftp->fname,
> - HMCDRV_FTP_FIDENT_MAX);
> + len = stracpy(sccb->evbuf.mdd.ftp.fident, ftp->fname);
Sorry, I don't understand the issue here. What specifically should I be
looking for?
>
> And:
>
> I would have expected the bit below to find and convert uses like
> drivers/hwmon/adc128d818.c: strlcpy(info->type, "adc128d818", I2C_NAME_SIZE);
> but it seems none of those were converted.
OK, thanks. I will check on it.
julia
> I don't know why.
>
> //------------------------------------------
> @r1@
> struct i1 *e1;
> expression e2;
> identifier f,i1,i2;
> position p;
> @@
> \(strscpy\|strlcpy\)(e1->f, e2, i2)@p
>
> @@
> identifier r1.i1,r1.i2;
> type T;
> @@
> struct i1 { ... T i1[i2]; ... }
>
> @@
> identifier f,i2;
> expression e1,e2;
> position r1.p;
> @@
> (
> -strscpy
> +stracpy
> |
> -strlcpy
> +stracpy
> )(e1->f, e2
> - , i2
> )@p
> //------------------------------------------
>
> to find
>
>
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next prev parent reply other threads:[~2019-07-24 4:27 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <7ab8957eaf9b0931a59eff6e2bd8c5169f2f6c41.1563841972.git.joe@perches.com>
2019-07-23 0:46 ` [Cocci] [Fwd: [PATCH 1/2] string: Add stracpy and stracpy_pad mechanisms] Joe Perches
2019-07-23 20:52 ` Julia Lawall
2019-07-23 23:42 ` Joe Perches
2019-07-24 3:54 ` Julia Lawall
2019-07-24 4:19 ` Joe Perches
2019-07-24 4:27 ` Julia Lawall [this message]
2019-07-24 4:37 ` Joe Perches
2019-07-24 10:28 ` David Laight
2019-07-24 10:43 ` Joe Perches
2019-07-24 11:45 ` Julia Lawall
2019-07-25 1:42 ` Julia Lawall
2019-07-25 7:46 ` [Cocci] [PATCH 1/2] string: Add stracpy and stracpy_pad mechanisms Markus Elfring
2019-07-25 11:34 ` Julia Lawall
2019-07-25 12:40 ` [Cocci] [1/2] " Markus Elfring
2019-07-25 13:45 ` [Cocci] [PATCH 1/2] " Markus Elfring
2019-07-25 13:48 ` Julia Lawall
2019-07-25 14:48 ` [Cocci] [1/2] " Markus Elfring
2019-07-25 13:50 ` [Cocci] [Fwd: [PATCH 1/2] string: Add stracpy and stracpy_pad mechanisms] Joe Perches
2019-07-25 13:58 ` Julia Lawall
2019-07-25 14:12 ` Joe Perches
2019-07-25 22:51 ` Julia Lawall
2019-07-26 6:15 ` [Cocci] [1/2] string: Add stracpy and stracpy_pad mechanisms Markus Elfring
2019-07-29 14:07 ` [Cocci] [Fwd: [PATCH 1/2] string: Add stracpy and stracpy_pad mechanisms] Julia Lawall
2019-07-29 16:28 ` Joe Perches
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