sysfs: Introducing binary attributes for struct class

Added dev_bin_attrs to struct class similar to existing dev_attrs.

Signed-off-by: Stefan Achatz <erazor_de@users.sourceforge.net>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

diff --git a/drivers/base/core.c b/drivers/base/core.c
index 6ed645411c40d4bd7c59d33a9055da24e7ff1159..7613592615896d40715831fe2ae436ecf1db1cdd 100644 (file)
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -338,6 +338,35 @@ static void device_remove_attributes(struct device *dev,
                        device_remove_file(dev, &attrs[i]);
 }
 
+static int device_add_bin_attributes(struct device *dev,
+                                    struct bin_attribute *attrs)
+{
+       int error = 0;
+       int i;
+
+       if (attrs) {
+               for (i = 0; attr_name(attrs[i]); i++) {
+                       error = device_create_bin_file(dev, &attrs[i]);
+                       if (error)
+                               break;
+               }
+               if (error)
+                       while (--i >= 0)
+                               device_remove_bin_file(dev, &attrs[i]);
+       }
+       return error;
+}
+
+static void device_remove_bin_attributes(struct device *dev,
+                                        struct bin_attribute *attrs)
+{
+       int i;
+
+       if (attrs)
+               for (i = 0; attr_name(attrs[i]); i++)
+                       device_remove_bin_file(dev, &attrs[i]);
+}
+
 static int device_add_groups(struct device *dev,
                             const struct attribute_group **groups)
 {
@@ -378,12 +407,15 @@ static int device_add_attrs(struct device *dev)
                error = device_add_attributes(dev, class->dev_attrs);
                if (error)
                        return error;
+               error = device_add_bin_attributes(dev, class->dev_bin_attrs);
+               if (error)
+                       goto err_remove_class_attrs;
        }
 
        if (type) {
                error = device_add_groups(dev, type->groups);
                if (error)
-                       goto err_remove_class_attrs;
+                       goto err_remove_class_bin_attrs;
        }
 
        error = device_add_groups(dev, dev->groups);
@@ -395,6 +427,9 @@ static int device_add_attrs(struct device *dev)
  err_remove_type_groups:
        if (type)
                device_remove_groups(dev, type->groups);
+ err_remove_class_bin_attrs:
+       if (class)
+               device_remove_bin_attributes(dev, class->dev_bin_attrs);
  err_remove_class_attrs:
        if (class)
                device_remove_attributes(dev, class->dev_attrs);
@@ -412,8 +447,10 @@ static void device_remove_attrs(struct device *dev)
        if (type)
                device_remove_groups(dev, type->groups);
 
-       if (class)
+       if (class) {
                device_remove_attributes(dev, class->dev_attrs);
+               device_remove_bin_attributes(dev, class->dev_bin_attrs);
+       }
 }
 
 

diff --git a/include/linux/device.h b/include/linux/device.h
index dd489531346864be7031cd9d7937e29b44db3e00..032bdb5406a29defb1b3f9474ca092f9c84d33d9 100644 (file)
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -197,6 +197,7 @@ struct class {
 
        struct class_attribute          *class_attrs;
        struct device_attribute         *dev_attrs;
+       struct bin_attribute            *dev_bin_attrs;
        struct kobject                  *dev_kobj;
 
        int (*dev_uevent)(struct device *dev, struct kobj_uevent_env *env);