patches for DPDK stable branches
 help / color / Atom feed
From: Jin Yu <jin.yu@intel.com>
To: Maxime Coquelin <maxime.coquelin@redhat.com>,
	Tiwei Bie <tiwei.bie@intel.com>,
	Zhihong Wang <zhihong.wang@intel.com>
Cc: dev@dpdk.org, Jin Yu <jin.yu@intel.com>, stable@dpdk.org
Subject: [dpdk-stable] [PATCH] examples/vhost_blk: fix the TOCTOU
Date: Tue, 26 Nov 2019 23:32:14 +0800
Message-ID: <20191126153214.7952-1-jin.yu@intel.com> (raw)

Fix the time of check time of use warning in example code

Coverity issue: 350589 158663
Fixes: c19beb3f38cd ("examples/vhost_blk: introduce vhost storage sample")
Cc: stable@dpdk.org

Signed-off-by: Jin Yu <jin.yu@intel.com>
---
 examples/vhost_blk/vhost_blk.c | 9 ++-------
 1 file changed, 2 insertions(+), 7 deletions(-)

diff --git a/examples/vhost_blk/vhost_blk.c b/examples/vhost_blk/vhost_blk.c
index 3182a488b..bcb4ebb0b 100644
--- a/examples/vhost_blk/vhost_blk.c
+++ b/examples/vhost_blk/vhost_blk.c
@@ -993,11 +993,7 @@ vhost_blk_ctrlr_construct(const char *ctrlr_name)
 	}
 	snprintf(dev_pathname, sizeof(dev_pathname), "%s/%s", path, ctrlr_name);
 
-	if (access(dev_pathname, F_OK) != -1) {
-		if (unlink(dev_pathname) != 0)
-			rte_exit(EXIT_FAILURE, "Cannot remove %s.\n",
-				 dev_pathname);
-	}
+	unlink(dev_pathname);
 
 	if (rte_vhost_driver_register(dev_pathname, 0) != 0) {
 		fprintf(stderr, "socket %s already exists\n", dev_pathname);
@@ -1040,8 +1036,7 @@ signal_handler(__rte_unused int signum)
 {
 	struct vhost_blk_ctrlr *ctrlr;
 
-	if (access(dev_pathname, F_OK) == 0)
-		unlink(dev_pathname);
+	unlink(dev_pathname);
 
 	if (g_should_stop != -1) {
 		g_should_stop = 1;
-- 
2.17.2


             reply index

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-11-26 15:32 Jin Yu [this message]
2019-11-26 10:25 ` [dpdk-stable] [dpdk-dev] " Bruce Richardson
2019-11-27  2:36   ` Yu, Jin
2019-11-27  9:35     ` Bruce Richardson
2020-01-14  9:32     ` Maxime Coquelin
2020-02-11  9:33 ` [dpdk-stable] [PATCH v2] " Jin Yu
2020-02-12 12:54   ` Jin Yu
2020-02-13 16:28   ` Maxime Coquelin

Reply instructions:

You may reply publically 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=20191126153214.7952-1-jin.yu@intel.com \
    --to=jin.yu@intel.com \
    --cc=dev@dpdk.org \
    --cc=maxime.coquelin@redhat.com \
    --cc=stable@dpdk.org \
    --cc=tiwei.bie@intel.com \
    --cc=zhihong.wang@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

patches for DPDK stable branches

Archives are clonable:
	git clone --mirror http://inbox.dpdk.org/stable/0 stable/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 stable stable/ http://inbox.dpdk.org/stable \
		stable@dpdk.org
	public-inbox-index stable


Newsgroup available over NNTP:
	nntp://inbox.dpdk.org/inbox.dpdk.stable


AGPL code for this site: git clone https://public-inbox.org/ public-inbox