diff options
Diffstat (limited to 'lib/kobject.c')
| -rw-r--r-- | lib/kobject.c | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/lib/kobject.c b/lib/kobject.c index 1699eb9161f..744a4b102c7 100644 --- a/lib/kobject.c +++ b/lib/kobject.c @@ -119,6 +119,7 @@ char *kobject_get_path(struct kobject *kobj, gfp_t gfp_mask) return path; } +EXPORT_SYMBOL_GPL(kobject_get_path); /** * kobject_init - initialize object. @@ -310,6 +311,56 @@ int kobject_rename(struct kobject * kobj, const char *new_name) } /** + * kobject_move - move object to another parent + * @kobj: object in question. + * @new_parent: object's new parent + */ + +int kobject_move(struct kobject *kobj, struct kobject *new_parent) +{ + int error; + struct kobject *old_parent; + const char *devpath = NULL; + char *devpath_string = NULL; + char *envp[2]; + + kobj = kobject_get(kobj); + if (!kobj) + return -EINVAL; + new_parent = kobject_get(new_parent); + if (!new_parent) { + error = -EINVAL; + goto out; + } + /* old object path */ + devpath = kobject_get_path(kobj, GFP_KERNEL); + if (!devpath) { + error = -ENOMEM; + goto out; + } + devpath_string = kmalloc(strlen(devpath) + 15, GFP_KERNEL); + if (!devpath_string) { + error = -ENOMEM; + goto out; + } + sprintf(devpath_string, "DEVPATH_OLD=%s", devpath); + envp[0] = devpath_string; + envp[1] = NULL; + error = sysfs_move_dir(kobj, new_parent); + if (error) + goto out; + old_parent = kobj->parent; + kobj->parent = new_parent; + kobject_put(old_parent); + kobject_uevent_env(kobj, KOBJ_MOVE, envp); +out: + kobject_put(kobj); + kfree(devpath_string); + kfree(devpath); + return error; +} + +/** * kobject_del - unlink kobject from hierarchy. * @kobj: object. */ |