FreeBSD/Linux Kernel Cross Reference
sys/compat/linuxkpi/common/include/linux/kobject.h

     /*-
      * 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 _LINUXKPI_LINUX_KOBJECT_H_
    #define _LINUXKPI_LINUX_KOBJECT_H_
    
    #include <machine/stdarg.h>
    
    #include <linux/kernel.h>
    #include <linux/kref.h>
    #include <linux/list.h>
    #include <linux/slab.h>
    
    struct kobject;
    struct sysctl_oid;
    
    #define KOBJ_CHANGE             0x01
    
    struct kobj_type {
            void (*release)(struct kobject *kobj);
            const struct sysfs_ops *sysfs_ops;
            struct attribute **default_attrs;
    };
    
    extern const struct kobj_type linux_kfree_type;
    
    struct kobject {
            struct kobject          *parent;
            char                    *name;
            struct kref             kref;
            const struct kobj_type  *ktype;
            struct list_head        entry;
            struct sysctl_oid       *oidp;
    };
    
    extern struct kobject *mm_kobj;
    
    struct attribute {
            const char      *name;
            struct module   *owner;
            mode_t          mode;
    };
    
    extern const struct sysfs_ops kobj_sysfs_ops;
    
    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);
    };
    
    static inline void
    kobject_init(struct kobject *kobj, const struct kobj_type *ktype)
    {
    
            kref_init(&kobj->kref);
            INIT_LIST_HEAD(&kobj->entry);
            kobj->ktype = ktype;
            kobj->oidp = NULL;
    }
    
    void linux_kobject_release(struct kref *kref);
    
    static inline void
    kobject_put(struct kobject *kobj)
    {
    
            if (kobj)
                    kref_put(&kobj->kref, linux_kobject_release);
    }
   
   static inline struct kobject *
   kobject_get(struct kobject *kobj)
   {
   
           if (kobj)
                   kref_get(&kobj->kref);
           return kobj;
   }
   
   struct kobject *kobject_create(void);
   int     kobject_set_name_vargs(struct kobject *kobj, const char *fmt, va_list);
   int     kobject_add(struct kobject *kobj, struct kobject *parent,
               const char *fmt, ...);
   
   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 void
   kobject_del(struct kobject *kobj __unused)
   {
   }
   
   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, const struct kobj_type *ktype,
               struct kobject *parent, const char *fmt, ...);
   
   static __inline void
   kobject_uevent_env(struct kobject *kobj, int action, char *envp[])
   {
   
           /*
            * iwlwifi(4) sends an INACCESSIBLE event when it detects that the card
            * (pice endpoint) is gone and it attempts a removal cleanup.
            * Not sure if we do anything related to udev/sysfs at the moment or
            * need a shortcut or simply ignore it (for now).
            */
   }
   
   #endif /* _LINUXKPI_LINUX_KOBJECT_H_ */

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