/*-
* Copyright (c) 2010 Isilon Systems, Inc.
* Copyright (c) 2010 iX Systems, Inc.
* Copyright (c) 2010 Panasas, Inc.
* Copyright (c) 2013, 2014 Mellanox Technologies, Ltd.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice unmodified, this list of conditions, and the following
* disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef _LINUX_KOBJECT_H_
#define _LINUX_KOBJECT_H_
#include <machine/stdarg.h>
#include <linux/kernel.h>
#include <linux/kref.h>
#include <linux/slab.h>
#if 0
struct kobject;
struct sysctl_oid;
struct kobj_type {
void (*release)(struct kobject *kobj);
const struct sysfs_ops *sysfs_ops;
struct attribute **default_attrs;
};
extern struct kobj_type kfree_type;
struct kobject {
struct kobject *parent;
char *name;
struct kref kref;
struct kobj_type *ktype;
struct list_head entry;
struct sysctl_oid *oidp;
};
extern struct kobject *mm_kobj;
static inline void
kobject_init(struct kobject *kobj, struct kobj_type *ktype)
{
kref_init(&kobj->kref);
INIT_LIST_HEAD(&kobj->entry);
kobj->ktype = ktype;
kobj->oidp = NULL;
}
static inline void kobject_put(struct kobject *kobj);
void kobject_release(struct kref *kref);
static inline void
kobject_put(struct kobject *kobj)
{
if (kobj)
kref_put(&kobj->kref, kobject_release);
}
static inline struct kobject *
kobject_get(struct kobject *kobj)
{
if (kobj)
kref_get(&kobj->kref);
return kobj;
}
static inline int
kobject_set_name_vargs(struct kobject *kobj, const char *fmt, va_list args)
{
char *old;
char *name;
old = kobj->name;
if (old && !fmt)
return 0;
name = kzalloc(MAXPATHLEN, GFP_KERNEL);
if (!name)
return -ENOMEM;
vsnprintf(name, MAXPATHLEN, fmt, args);
kobj->name = name;
kfree(old);
for (; *name != '\0'; name++)
if (*name == '/')
*name = '!';
return (0);
}
int kobject_add(struct kobject *kobj, struct kobject *parent,
const char *fmt, ...);
static inline struct kobject *
kobject_create(void)
{
struct kobject *kobj;
kobj = kzalloc(sizeof(*kobj), GFP_KERNEL);
if (kobj == NULL)
return (NULL);
kobject_init(kobj, &kfree_type);
return (kobj);
}
static inline struct kobject *
kobject_create_and_add(const char *name, struct kobject *parent)
{
struct kobject *kobj;
kobj = kobject_create();
if (kobj == NULL)
return (NULL);
if (kobject_add(kobj, parent, "%s", name) == 0)
return (kobj);
kobject_put(kobj);
return (NULL);
}
static inline char *
kobject_name(const struct kobject *kobj)
{
return kobj->name;
}
int kobject_set_name(struct kobject *kobj, const char *fmt, ...);
int kobject_init_and_add(struct kobject *kobj, struct kobj_type *ktype,
struct kobject *parent, const char *fmt, ...);
/* sysfs.h calles for 'kobject' which is defined here,
* so we need to add the include only after the 'kobject' def.
*/
#include <linux/sysfs.h>
struct kobj_attribute {
struct attribute attr;
ssize_t (*show)(struct kobject *kobj, struct kobj_attribute *attr,
char *buf);
ssize_t (*store)(struct kobject *kobj, struct kobj_attribute *attr,
const char *buf, size_t count);
};
#endif
#endif /* _LINUX_KOBJECT_H_ */
