From: "Wiles, Keith" <keith.wiles@intel.com>
To: "dev@dpdk.org" <dev@dpdk.org>
Subject: Re: [dpdk-dev] [PATCH v3] net/tap: fix coverity warning on strncpy
Date: Fri, 17 Feb 2017 15:39:01 +0000 [thread overview]
Message-ID: <554A83AA-8607-4381-8874-2D7CF97DC05F@intel.com> (raw)
In-Reply-To: <20170217153725.50050-1-keith.wiles@intel.com>
> On Feb 17, 2017, at 9:37 AM, Keith Wiles <keith.wiles@intel.com> wrote:
>
> Calling strncpy with a maximum size argument of 16 bytes on destination
> array "ifr.ifr_ifrn.ifrn_name" of size 16 bytes might leave the
> destination string unterminated.
>
> Signed-off-by: Keith Wiles <keith.wiles@intel.com>
> ---
> v3 - convert strncpy to use snprintf instead.
> v2 - fix the checkpatch warning no spaces around '-'
> v1 - fix coverity warning on strncpy using invalid length.
>
> drivers/net/tap/rte_eth_tap.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/net/tap/rte_eth_tap.c b/drivers/net/tap/rte_eth_tap.c
> index efc4426..cf1cea3 100644
> --- a/drivers/net/tap/rte_eth_tap.c
> +++ b/drivers/net/tap/rte_eth_tap.c
> @@ -297,7 +297,7 @@ tap_link_set_flags(struct pmd_internals *pmd, short flags, int add)
> return -1;
> }
> memset(&ifr, 0, sizeof(ifr));
> - strncpy(ifr.ifr_name, pmd->name, IFNAMSIZ);
> + strncpy(ifr.ifr_name, pmd->name, IFNAMSIZ - 1);
> err = ioctl(s, SIOCGIFFLAGS, &ifr);
> if (err < 0) {
> RTE_LOG(WARNING, PMD, "Unable to get %s device flags: %s\n”,
NAK :-( forgot to finish the rebase
> --
> 2.8.0.GIT
>
Regards,
Keith
prev parent reply other threads:[~2017-02-17 15:39 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-02-17 15:37 Keith Wiles
2017-02-17 15:39 ` Wiles, Keith [this message]
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=554A83AA-8607-4381-8874-2D7CF97DC05F@intel.com \
--to=keith.wiles@intel.com \
--cc=dev@dpdk.org \
/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).