[dpdk-stable] [dpdk-dev] [PATCH] examples/ntb: fix error handling

[Li, Xiaoyun]

Sure. Will update in v2. Thx.

> -----Original Message-----
> From: Ye, Xiaolong
> Sent: Monday, August 5, 2019 14:05
> To: Li, Xiaoyun <xiaoyun.li at intel.com>
> Cc: Wu, Jingjing <jingjing.wu at intel.com>; dev at dpdk.org; stable at dpdk.org
> Subject: Re: [dpdk-dev] [PATCH] examples/ntb: fix error handling
> 
> 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 at dpdk.org
> >
> >Signed-off-by: Xiaoyun Li <xiaoyun.li at 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
> >