DPDK patches and discussions
 help / color / mirror / Atom feed
From: Ye Xiaolong <xiaolong.ye@intel.com>
To: Xiaoyun Li <xiaoyun.li@intel.com>
Cc: jingjing.wu@intel.com, dev@dpdk.org, stable@dpdk.org
Subject: Re: [dpdk-dev] [PATCH] examples/ntb: fix error handling
Date: Mon, 5 Aug 2019 14:04:47 +0800	[thread overview]
Message-ID: <20190805060447.GG51603@intel.com> (raw)
In-Reply-To: <20190805050313.28719-1-xiaoyun.li@intel.com>

On 08/05, Xiaoyun Li wrote:
>This patch adds return value checking for fseek function to fix
>error handling issue found by coverity scan.
>
>Coverity issue: 344996
>Fixes: c5eebf85badc ("examples/ntb: add example for NTB")
>Cc: stable@dpdk.org
>
>Signed-off-by: Xiaoyun Li <xiaoyun.li@intel.com>
>---
> examples/ntb/ntb_fwd.c | 13 +++++++++++--
> 1 file changed, 11 insertions(+), 2 deletions(-)
>
>diff --git a/examples/ntb/ntb_fwd.c b/examples/ntb/ntb_fwd.c
>index c169f01a3..671b13f50 100644
>--- a/examples/ntb/ntb_fwd.c
>+++ b/examples/ntb/ntb_fwd.c
>@@ -107,6 +107,7 @@ cmd_sendfile_parsed(void *parsed_result,
> 	uint8_t *buff;
> 	uint32_t val;
> 	FILE *file;
>+	int status;
> 
> 	if (!rte_rawdevs[dev_id].started) {
> 		printf("Device needs to be up first. Try later.\n");
>@@ -125,9 +126,17 @@ cmd_sendfile_parsed(void *parsed_result,
> 		return;
> 	}
> 
>-	fseek(file, 0, SEEK_END);
>+	status = fseek(file, 0, SEEK_END);
>+	if (status) {

How about simplify to 

	if (fseek(file, 0, SEEK_END) < 0)

>+		printf("Fail to get file size.\n");
>+		return;
>+	}
> 	size = ftell(file);
>-	fseek(file, 0, SEEK_SET);
>+	status = fseek(file, 0, SEEK_SET);
>+	if (status) {

Ditto.

Thanks,
Xiaolong
>+		printf("Fail to get file size.\n");
>+		return;
>+	}
> 
> 	/**
> 	 * No FIFO now. Only test memory. Limit sending file
>-- 
>2.17.1
>

  parent reply	other threads:[~2019-08-05  6:05 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-08-05  5:03 Xiaoyun Li
2019-08-05  5:57 ` [dpdk-dev] [PATCH v2] " Xiaoyun Li
2019-08-06  7:45   ` Ye Xiaolong
2019-08-06  8:33     ` Thomas Monjalon
2019-08-05  6:04 ` Ye Xiaolong [this message]
2019-08-05  6:19   ` [dpdk-dev] [PATCH] " Li, Xiaoyun

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=20190805060447.GG51603@intel.com \
    --to=xiaolong.ye@intel.com \
    --cc=dev@dpdk.org \
    --cc=jingjing.wu@intel.com \
    --cc=stable@dpdk.org \
    --cc=xiaoyun.li@intel.com \
    /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).