From: Richard Weinberger <richard@nod.at>
Date: Sun, 20 Apr 2025 10:47:25 +0000 (+0200)
Subject: configfs: Add CONFIGFS_ATTR_PERM helper
X-Git-Tag: v6.16-rc1~213^2~6
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=eae324ca644554d5ce363186bee820a088bb74ab;p=thirdparty%2Fkernel%2Flinux.git

configfs: Add CONFIGFS_ATTR_PERM helper

This new helper allows creating rw files with custom
permissions.

Signed-off-by: Richard Weinberger <richard@nod.at>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Link: https://lore.kernel.org/r/20250420104726.2963750-1-richard@nod.at
Signed-off-by: Andreas Hindborg <a.hindborg@kernel.org>
---

diff --git a/include/linux/configfs.h b/include/linux/configfs.h
index c771e9d0d0b92..698520b1bfdbc 100644
--- a/include/linux/configfs.h
+++ b/include/linux/configfs.h
@@ -120,15 +120,19 @@ struct configfs_attribute {
 	ssize_t (*store)(struct config_item *, const char *, size_t);
 };
 
-#define CONFIGFS_ATTR(_pfx, _name)			\
+#define CONFIGFS_ATTR_PERM(_pfx, _name, _perm)		\
 static struct configfs_attribute _pfx##attr_##_name = {	\
 	.ca_name	= __stringify(_name),		\
-	.ca_mode	= S_IRUGO | S_IWUSR,		\
+	.ca_mode	= _perm,			\
 	.ca_owner	= THIS_MODULE,			\
 	.show		= _pfx##_name##_show,		\
 	.store		= _pfx##_name##_store,		\
 }
 
+#define CONFIGFS_ATTR(_pfx, _name) CONFIGFS_ATTR_PERM(	\
+		_pfx, _name, S_IRUGO | S_IWUSR		\
+)
+
 #define CONFIGFS_ATTR_RO(_pfx, _name)			\
 static struct configfs_attribute _pfx##attr_##_name = {	\
 	.ca_name	= __stringify(_name),		\