linux-kernel - [PATCH] fs: dlm: use sysfs_emit() instead of snprintf()

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Message-ID: <20260208221215.205864-1-anishm7030@gmail.com>
Date: Sun,  8 Feb 2026 17:12:15 -0500
From: Anish Mulay <anishm7030@...il.com>
To: aahringo@...hat.com,
	teigland@...hat.com
Cc: gfs2@...ts.linux.dev,
	linux-kernel@...r.kernel.org,
	Anish Mulay <anishm7030@...il.com>
Subject: [PATCH] fs: dlm: use sysfs_emit() instead of snprintf()

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

This patch replaces snprintf() with sysfs_emit() in the lockspace
show functions.

Signed-off-by: Anish Mulay <anishm7030@...il.com>
---
 fs/dlm/lockspace.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/fs/dlm/lockspace.c b/fs/dlm/lockspace.c
index ddaa76558706..23975bb394eb 100644
--- a/fs/dlm/lockspace.c
+++ b/fs/dlm/lockspace.c
@@ -69,7 +69,7 @@ static ssize_t dlm_event_store(struct dlm_ls *ls, const char *buf, size_t len)
 
 static ssize_t dlm_id_show(struct dlm_ls *ls, char *buf)
 {
-	return snprintf(buf, PAGE_SIZE, "%u\n", ls->ls_global_id);
+	return sysfs_emit(buf, "%u\n", ls->ls_global_id);
 }
 
 static ssize_t dlm_id_store(struct dlm_ls *ls, const char *buf, size_t len)
@@ -83,7 +83,7 @@ static ssize_t dlm_id_store(struct dlm_ls *ls, const char *buf, size_t len)
 
 static ssize_t dlm_nodir_show(struct dlm_ls *ls, char *buf)
 {
-	return snprintf(buf, PAGE_SIZE, "%u\n", dlm_no_directory(ls));
+	return sysfs_emit(buf, "%u\n", dlm_no_directory(ls));
 }
 
 static ssize_t dlm_nodir_store(struct dlm_ls *ls, const char *buf, size_t len)
@@ -101,12 +101,12 @@ static ssize_t dlm_nodir_store(struct dlm_ls *ls, const char *buf, size_t len)
 static ssize_t dlm_recover_status_show(struct dlm_ls *ls, char *buf)
 {
 	uint32_t status = dlm_recover_status(ls);
-	return snprintf(buf, PAGE_SIZE, "%x\n", status);
+	return sysfs_emit(buf, "%x\n", status);
 }
 
 static ssize_t dlm_recover_nodeid_show(struct dlm_ls *ls, char *buf)
 {
-	return snprintf(buf, PAGE_SIZE, "%d\n", ls->ls_recover_nodeid);
+	return sysfs_emit(buf, "%d\n", ls->ls_recover_nodeid);
 }
 
 struct dlm_attr {
-- 
2.43.0