DPDK patches and discussions
 help / color / mirror / Atom feed
From: Artemy Kovalyov <artemyko@nvidia.com>
To: <dev@dpdk.org>
Cc: Thomas Monjalon <thomas@monjalon.net>, <stable@dpdk.org>
Subject: [PATCH 4/5] eal: fix first time primary autodetect
Date: Tue, 12 Dec 2023 06:25:15 +0200	[thread overview]
Message-ID: <20231212042517.164353-5-artemyko@nvidia.com> (raw)
In-Reply-To: <20231212042517.164353-1-artemyko@nvidia.com>

If the configuration file is absent, the autodetection function should
generate and secure it. Otherwise, multiple simultaneous openings could
erroneously identify themselves as primary instances.

Fixes: af75078fece3 ("first public release")
Cc: stable@dpdk.org

Signed-off-by: Artemy Kovalyov <artemyko@nvidia.com>
---
 lib/eal/linux/eal.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/eal/linux/eal.c b/lib/eal/linux/eal.c
index 57da058..9b59cec 100644
--- a/lib/eal/linux/eal.c
+++ b/lib/eal/linux/eal.c
@@ -360,7 +360,7 @@ enum rte_proc_type_t
 		 * keep that open and don't close it to prevent a race condition
 		 * between multiple opens.
 		 */
-		if (((mem_cfg_fd = open(pathname, O_RDWR)) >= 0) &&
+		if (((mem_cfg_fd = open(pathname, O_RDWR | O_CREAT, 0600)) >= 0) &&
 				(fcntl(mem_cfg_fd, F_SETLK, &wr_lock) < 0))
 			ptype = RTE_PROC_SECONDARY;
 	}
-- 
1.8.3.1


  parent reply	other threads:[~2023-12-12  4:26 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-12-12  4:25 [PATCH 0/5] addressing races in concurrent process startup Artemy Kovalyov
2023-12-12  4:25 ` [PATCH 1/5] app/test-pm: add multiprocess test Artemy Kovalyov
2023-12-12 17:09   ` Stephen Hemminger
2023-12-17  3:53   ` [PATCH v2 1/5] app/test-mp: " Artemy Kovalyov
2024-03-06 20:20     ` David Marchand
2024-03-07  6:59   ` [PATCH 0/5] addressing races in concurrent process startup Artemy Kovalyov
2024-03-07  7:01   ` Artemy Kovalyov
2024-03-07  7:01     ` [PATCH v2 1/5] app/test-mp: add multiprocess test Artemy Kovalyov
2024-03-13 16:05       ` Burakov, Anatoly
2024-03-07  7:01     ` [PATCH v2 2/5] eal: fix multiprocess hotplug race Artemy Kovalyov
2024-03-13 16:05       ` Burakov, Anatoly
2024-03-07  7:01     ` [PATCH v2 3/5] ipc: fix mp channel closure to prevent message loss Artemy Kovalyov
2024-03-13 16:06       ` Burakov, Anatoly
2024-03-07  7:01     ` [PATCH v2 4/5] eal: fix first time primary autodetect Artemy Kovalyov
2024-03-13 16:06       ` Burakov, Anatoly
2024-03-07  7:01     ` [PATCH v2 5/5] eal: fix memzone fbarray cleanup Artemy Kovalyov
2024-03-13 16:17       ` Burakov, Anatoly
2023-12-12  4:25 ` [PATCH 2/5] eal: fix multiprocess hotplug race Artemy Kovalyov
2023-12-12  4:25 ` [PATCH 3/5] ipc: fix mp channel closure to prevent message loss Artemy Kovalyov
2023-12-12  4:25 ` Artemy Kovalyov [this message]
2023-12-12  4:25 ` [PATCH 5/5] eal: fix memzone fbarray cleanup Artemy Kovalyov

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=20231212042517.164353-5-artemyko@nvidia.com \
    --to=artemyko@nvidia.com \
    --cc=dev@dpdk.org \
    --cc=stable@dpdk.org \
    --cc=thomas@monjalon.net \
    /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).