linux-kernel - [PATCH security-next] selinux: use sysfs

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Message-ID: <202212051932088061889@zte.com.cn>
Date:   Mon, 5 Dec 2022 19:32:08 +0800 (CST)
From:   <ye.xingchen@....com.cn>
To:     <paul@...l-moore.com>
Cc:     <stephen.smalley.work@...il.com>, <eparis@...isplace.org>,
        <selinux@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH security-next] selinux: use sysfs_emit() to instead of scnprintf()

From: ye xingchen <ye.xingchen@....com.cn>

Follow the advice of the Documentation/filesystems/sysfs.rst and show()
should only use sysfs_emit() or sysfs_emit_at() when formatting the
value to be returned to user space.

Signed-off-by: ye xingchen <ye.xingchen@....com.cn>
---
 security/selinux/avc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/security/selinux/avc.c b/security/selinux/avc.c
index 9a43af0ebd7d..517fe3454aec 100644
--- a/security/selinux/avc.c
+++ b/security/selinux/avc.c
@@ -174,7 +174,7 @@ int avc_get_hash_stats(struct selinux_avc *avc, char *page)

 	rcu_read_unlock();

-	return scnprintf(page, PAGE_SIZE, "entries: %d\nbuckets used: %d/%d\n"
+	return sysfs_emit(page, "entries: %d\nbuckets used: %d/%d\n"
 			 "longest chain: %d\n",
 			 atomic_read(&avc->avc_cache.active_nodes),
 			 slots_used, AVC_CACHE_SLOTS, max_chain_len);
-- 
2.25.1