sysfs: add sysfs_group{s}_change_owner()
Add helpers to change the owner of sysfs groups.
This function will be used to correctly account for kobject ownership
changes, e.g. when moving network devices between network namespaces.
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/linux/sysfs.h b/include/linux/sysfs.h
index 7e15ebf..3fcaabd 100644
--- a/include/linux/sysfs.h
+++ b/include/linux/sysfs.h
@@ -314,6 +314,12 @@ int sysfs_file_change_owner(struct kobject *kobj, const char *name, kuid_t kuid,
kgid_t kgid);
int sysfs_link_change_owner(struct kobject *kobj, struct kobject *targ,
const char *name, kuid_t kuid, kgid_t kgid);
+int sysfs_groups_change_owner(struct kobject *kobj,
+ const struct attribute_group **groups,
+ kuid_t kuid, kgid_t kgid);
+int sysfs_group_change_owner(struct kobject *kobj,
+ const struct attribute_group *groups, kuid_t kuid,
+ kgid_t kgid);
#else /* CONFIG_SYSFS */
@@ -542,6 +548,20 @@ static inline int sysfs_link_change_owner(struct kobject *kobj,
return 0;
}
+static inline int sysfs_groups_change_owner(struct kobject *kobj,
+ const struct attribute_group **groups,
+ kuid_t kuid, kgid_t kgid)
+{
+ return 0;
+}
+
+static inline int sysfs_group_change_owner(struct kobject *kobj,
+ const struct attribute_group **groups,
+ kuid_t kuid, kgid_t kgid)
+{
+ return 0;
+}
+
#endif /* CONFIG_SYSFS */
static inline int __must_check sysfs_create_file(struct kobject *kobj,