1219820Sjeff/*- 2219820Sjeff * Copyright (c) 2010 Isilon Systems, Inc. 3219820Sjeff * Copyright (c) 2010 iX Systems, Inc. 4219820Sjeff * Copyright (c) 2010 Panasas, Inc. 5271127Shselasky * Copyright (c) 2013, 2014 Mellanox Technologies, Ltd. 6219820Sjeff * All rights reserved. 7219820Sjeff * 8219820Sjeff * Redistribution and use in source and binary forms, with or without 9219820Sjeff * modification, are permitted provided that the following conditions 10219820Sjeff * are met: 11219820Sjeff * 1. Redistributions of source code must retain the above copyright 12219820Sjeff * notice unmodified, this list of conditions, and the following 13219820Sjeff * disclaimer. 14219820Sjeff * 2. Redistributions in binary form must reproduce the above copyright 15219820Sjeff * notice, this list of conditions and the following disclaimer in the 16219820Sjeff * documentation and/or other materials provided with the distribution. 17219820Sjeff * 18219820Sjeff * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19219820Sjeff * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20219820Sjeff * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21219820Sjeff * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22219820Sjeff * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 23219820Sjeff * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24219820Sjeff * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25219820Sjeff * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26219820Sjeff * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27219820Sjeff * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28219820Sjeff */ 29219820Sjeff#ifndef _LINUX_KOBJECT_H_ 30219820Sjeff#define _LINUX_KOBJECT_H_ 31219820Sjeff 32219820Sjeff#include <machine/stdarg.h> 33219820Sjeff 34219820Sjeff#include <linux/kernel.h> 35219820Sjeff#include <linux/kref.h> 36219820Sjeff#include <linux/slab.h> 37219820Sjeff 38219820Sjeffstruct kobject; 39219820Sjeffstruct sysctl_oid; 40219820Sjeff 41219820Sjeffstruct kobj_type { 42219820Sjeff void (*release)(struct kobject *kobj); 43219820Sjeff const struct sysfs_ops *sysfs_ops; 44219820Sjeff struct attribute **default_attrs; 45219820Sjeff}; 46219820Sjeff 47219820Sjeffextern struct kobj_type kfree_type; 48219820Sjeff 49219820Sjeffstruct kobject { 50219820Sjeff struct kobject *parent; 51219820Sjeff char *name; 52219820Sjeff struct kref kref; 53219820Sjeff struct kobj_type *ktype; 54219820Sjeff struct list_head entry; 55219820Sjeff struct sysctl_oid *oidp; 56219820Sjeff}; 57219820Sjeff 58271127Shselaskyextern struct kobject *mm_kobj; 59271127Shselasky 60219820Sjeffstatic inline void 61219820Sjeffkobject_init(struct kobject *kobj, struct kobj_type *ktype) 62219820Sjeff{ 63219820Sjeff 64219820Sjeff kref_init(&kobj->kref); 65219820Sjeff INIT_LIST_HEAD(&kobj->entry); 66219820Sjeff kobj->ktype = ktype; 67219820Sjeff kobj->oidp = NULL; 68219820Sjeff} 69219820Sjeff 70219820Sjeffstatic inline void kobject_put(struct kobject *kobj); 71219820Sjeffvoid kobject_release(struct kref *kref); 72219820Sjeff 73219820Sjeffstatic inline void 74219820Sjeffkobject_put(struct kobject *kobj) 75219820Sjeff{ 76219820Sjeff 77219820Sjeff if (kobj) 78219820Sjeff kref_put(&kobj->kref, kobject_release); 79219820Sjeff} 80219820Sjeff 81219820Sjeffstatic inline struct kobject * 82219820Sjeffkobject_get(struct kobject *kobj) 83219820Sjeff{ 84219820Sjeff 85219820Sjeff if (kobj) 86219820Sjeff kref_get(&kobj->kref); 87219820Sjeff return kobj; 88219820Sjeff} 89219820Sjeff 90293151Shselaskyint kobject_set_name_vargs(struct kobject *kobj, const char *fmt, va_list); 91219820Sjeffint kobject_add(struct kobject *kobj, struct kobject *parent, 92219820Sjeff const char *fmt, ...); 93219820Sjeff 94219820Sjeffstatic inline struct kobject * 95219820Sjeffkobject_create(void) 96219820Sjeff{ 97219820Sjeff struct kobject *kobj; 98219820Sjeff 99219820Sjeff kobj = kzalloc(sizeof(*kobj), GFP_KERNEL); 100219820Sjeff if (kobj == NULL) 101219820Sjeff return (NULL); 102219820Sjeff kobject_init(kobj, &kfree_type); 103219820Sjeff 104219820Sjeff return (kobj); 105219820Sjeff} 106219820Sjeff 107219820Sjeffstatic inline struct kobject * 108219820Sjeffkobject_create_and_add(const char *name, struct kobject *parent) 109219820Sjeff{ 110219820Sjeff struct kobject *kobj; 111219820Sjeff 112219820Sjeff kobj = kobject_create(); 113219820Sjeff if (kobj == NULL) 114219820Sjeff return (NULL); 115219820Sjeff if (kobject_add(kobj, parent, "%s", name) == 0) 116219820Sjeff return (kobj); 117219820Sjeff kobject_put(kobj); 118219820Sjeff 119219820Sjeff return (NULL); 120219820Sjeff} 121219820Sjeff 122219820Sjeff 123219820Sjeffstatic inline char * 124219820Sjeffkobject_name(const struct kobject *kobj) 125219820Sjeff{ 126219820Sjeff 127219820Sjeff return kobj->name; 128219820Sjeff} 129219820Sjeff 130219820Sjeffint kobject_set_name(struct kobject *kobj, const char *fmt, ...); 131219820Sjeffint kobject_init_and_add(struct kobject *kobj, struct kobj_type *ktype, 132219820Sjeff struct kobject *parent, const char *fmt, ...); 133219820Sjeff 134271127Shselasky/* sysfs.h calles for 'kobject' which is defined here, 135271127Shselasky * so we need to add the include only after the 'kobject' def. 136271127Shselasky */ 137271127Shselasky#include <linux/sysfs.h> 138271127Shselasky 139271127Shselaskystruct kobj_attribute { 140271127Shselasky struct attribute attr; 141271127Shselasky ssize_t (*show)(struct kobject *kobj, struct kobj_attribute *attr, 142271127Shselasky char *buf); 143271127Shselasky ssize_t (*store)(struct kobject *kobj, struct kobj_attribute *attr, 144271127Shselasky const char *buf, size_t count); 145271127Shselasky}; 146271127Shselasky 147219820Sjeff#endif /* _LINUX_KOBJECT_H_ */ 148