linux-kernel - [PATCH v2 6/7] audit: Use task_is_in_init_pid

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Message-Id: <20211208083320.472503-7-leo.yan@linaro.org>
Date:   Wed,  8 Dec 2021 16:33:19 +0800
From:   Leo Yan <leo.yan@...aro.org>
To:     "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Leon Romanovsky <leon@...nel.org>,
        Mathieu Poirier <mathieu.poirier@...aro.org>,
        Suzuki K Poulose <suzuki.poulose@....com>,
        Mike Leach <mike.leach@...aro.org>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jan Harkes <jaharkes@...cmu.edu>, coda@...cmu.edu,
        Paul Moore <paul@...l-moore.com>,
        Eric Paris <eparis@...hat.com>,
        Balbir Singh <bsingharora@...il.com>, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, coresight@...ts.linaro.org,
        linux-arm-kernel@...ts.infradead.org, codalist@...a.cs.cmu.edu,
        linux-audit@...hat.com
Cc:     Leo Yan <leo.yan@...aro.org>
Subject: [PATCH v2 6/7] audit: Use task_is_in_init_pid_ns()

Replace open code with task_is_in_init_pid_ns() for checking root PID
namespace.

Signed-off-by: Leo Yan <leo.yan@...aro.org>
---
 kernel/audit.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/audit.c b/kernel/audit.c
index 121d37e700a6..56ea91014180 100644
--- a/kernel/audit.c
+++ b/kernel/audit.c
@@ -1034,7 +1034,7 @@ static int audit_netlink_ok(struct sk_buff *skb, u16 msg_type)
 	case AUDIT_MAKE_EQUIV:
 		/* Only support auditd and auditctl in initial pid namespace
 		 * for now. */
-		if (task_active_pid_ns(current) != &init_pid_ns)
+		if (!task_is_in_init_pid_ns(current))
 			return -EPERM;
 
 		if (!netlink_capable(skb, CAP_AUDIT_CONTROL))
-- 
2.25.1