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-rw-r--r--include/linux/configfs.h16
1 files changed, 16 insertions, 0 deletions
diff --git a/include/linux/configfs.h b/include/linux/configfs.h
index 3d4a96eb0e9..def7c83d43a 100644
--- a/include/linux/configfs.h
+++ b/include/linux/configfs.h
@@ -130,6 +130,22 @@ struct configfs_attribute {
mode_t ca_mode;
};
+/*
+ * Users often need to create attribute structures for their configurable
+ * attributes, containing a configfs_attribute member and function pointers
+ * for the show() and store() operations on that attribute. They can use
+ * this macro (similar to sysfs' __ATTR) to make defining attributes easier.
+ */
+#define __CONFIGFS_ATTR(_name, _mode, _show, _store) \
+{ \
+ .attr = { \
+ .ca_name = __stringify(_name), \
+ .ca_mode = _mode, \
+ .ca_owner = THIS_MODULE, \
+ }, \
+ .show = _show, \
+ .store = _store, \
+}
/*
* If allow_link() exists, the item can symlink(2) out to other