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Message-ID: <20250703222314.309967-7-aleksandr.mikhalitsyn@canonical.com>
Date: Fri, 4 Jul 2025 00:23:10 +0200
From: Alexander Mikhalitsyn <aleksandr.mikhalitsyn@...onical.com>
To: kuniyu@...gle.com
Cc: Alexander Mikhalitsyn <aleksandr.mikhalitsyn@...onical.com>,
linux-kernel@...r.kernel.org,
netdev@...r.kernel.org,
"David S. Miller" <davem@...emloft.net>,
Eric Dumazet <edumazet@...gle.com>,
Jakub Kicinski <kuba@...nel.org>,
Paolo Abeni <pabeni@...hat.com>,
Simon Horman <horms@...nel.org>,
Willem de Bruijn <willemb@...gle.com>,
Leon Romanovsky <leon@...nel.org>,
Arnd Bergmann <arnd@...db.de>,
Christian Brauner <brauner@...nel.org>,
Lennart Poettering <mzxreary@...inter.de>,
Luca Boccassi <bluca@...ian.org>,
David Rheinsberg <david@...dahead.eu>
Subject: [PATCH net-next v3 6/7] af_unix: enable handing out pidfds for reaped tasks in SCM_PIDFD
Now everything is ready to pass PIDFD_STALE to pidfd_prepare().
This will allow opening pidfd for reaped tasks.
Cc: linux-kernel@...r.kernel.org
Cc: netdev@...r.kernel.org
Cc: "David S. Miller" <davem@...emloft.net>
Cc: Eric Dumazet <edumazet@...gle.com>
Cc: Jakub Kicinski <kuba@...nel.org>
Cc: Paolo Abeni <pabeni@...hat.com>
Cc: Simon Horman <horms@...nel.org>
Cc: Willem de Bruijn <willemb@...gle.com>
Cc: Leon Romanovsky <leon@...nel.org>
Cc: Arnd Bergmann <arnd@...db.de>
Cc: Christian Brauner <brauner@...nel.org>
Cc: Kuniyuki Iwashima <kuniyu@...gle.com>
Cc: Lennart Poettering <mzxreary@...inter.de>
Cc: Luca Boccassi <bluca@...ian.org>
Cc: David Rheinsberg <david@...dahead.eu>
Signed-off-by: Alexander Mikhalitsyn <aleksandr.mikhalitsyn@...onical.com>
Reviewed-by: Christian Brauner <brauner@...nel.org>
---
net/core/scm.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/net/core/scm.c b/net/core/scm.c
index 358a4e04d46c..072d5742440a 100644
--- a/net/core/scm.c
+++ b/net/core/scm.c
@@ -23,6 +23,7 @@
#include <linux/security.h>
#include <linux/pid_namespace.h>
#include <linux/pid.h>
+#include <uapi/linux/pidfd.h>
#include <linux/pidfs.h>
#include <linux/nsproxy.h>
#include <linux/slab.h>
@@ -482,7 +483,7 @@ static void scm_pidfd_recv(struct msghdr *msg, struct scm_cookie *scm)
if (!scm->pid)
return;
- pidfd = pidfd_prepare(scm->pid, 0, &pidfd_file);
+ pidfd = pidfd_prepare(scm->pid, PIDFD_STALE, &pidfd_file);
if (put_cmsg(msg, SOL_SOCKET, SCM_PIDFD, sizeof(int), &pidfd)) {
if (pidfd_file) {
--
2.43.0
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