text: /*
   * sysfs for cifs
   *
   * Copyright (c) 2018, NVIDIA Corporation. All Rights Reserved.
   *
   * This program is free software; you can redistribute it and/or modify it
   * under the terms and conditions of the GNU General Public License,
   * version 2, as published by the Free Software Foundation.
   *
   * This program is distributed in the hope it will be useful, but WITHOUT
   * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
   * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
   * more details.
   *
   * You should have received a copy of the GNU General Public License
   * along with this program.  If not, see <http://www.gnu.org/licenses/>.
   */
  #include <linux/kobject.h>
  #include <linux/slab.h>
  #include "cifsglob.h"
  #include "sysfs.h"
  
  static struct kset *cifs_sysfs_kset;
  static struct kobject *cifs_sysfs_kobj;
  
  static struct kobj_type cifs_uevent_ktype = {
  
  };
  
  void cifs_sysfs_notify_change(const char* source, cifs_event_type event_type) {
  	char env_source[30];
  	char env_state[30];
  	char *envp[3] = { env_source, env_state, NULL };
  	sprintf(env_source, "SOURCE=%s", source);
  	sprintf(env_state, "STATE=%d", event_type);
  	kobject_uevent_env(cifs_sysfs_kobj, KOBJ_CHANGE, envp);
  }
  
  int cifs_sysfs_init(void) {
  	int ret;
  	cifs_sysfs_kset = kset_create_and_add("cifs", NULL, fs_kobj);
  	if (!cifs_sysfs_kset) {
  		return -ENOMEM;
  	}
  	cifs_sysfs_kobj = kzalloc(sizeof(*cifs_sysfs_kobj),
  		GFP_KERNEL);
  	if (!cifs_sysfs_kobj) {
  		return -ENOMEM;
  	}
  	cifs_sysfs_kobj->kset = cifs_sysfs_kset;
  	ret = kobject_init_and_add(cifs_sysfs_kobj, &cifs_uevent_ktype, NULL, "uevent");
  	if (!ret) {
  		kobject_uevent(cifs_sysfs_kobj, KOBJ_ADD);
  	} else {
  		kfree(cifs_sysfs_kobj);
  	}
  	return ret;
  }
  
  void cifs_sysfs_exit(void) {
  	kobject_uevent(cifs_sysfs_kobj, KOBJ_REMOVE);
  	kobject_put(cifs_sysfs_kobj);
  	kset_unregister(cifs_sysfs_kset);
  }
  