[PATCH 1/2] configfs: Add CONFIGFS_ATTR_PERM helper

[Richard Weinberger]

This new helper allows creating rw files with custom
permissions.

Signed-off-by: Richard Weinberger <richard at nod.at>
---
 include/linux/configfs.h | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/include/linux/configfs.h b/include/linux/configfs.h
index c771e9d0d0b9..698520b1bfdb 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),		\
-- 
2.48.1