1 /* 2 * Copyright (c) 2016-2018 François Tigeot <ftigeot@wolfpond.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice unmodified, this list of conditions, and the following 10 * disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27 #ifndef _LINUX_KOBJECT_H_ 28 #define _LINUX_KOBJECT_H_ 29 30 #include <linux/types.h> 31 #include <linux/list.h> 32 #include <linux/sysfs.h> 33 #include <linux/compiler.h> 34 #include <linux/spinlock.h> 35 #include <linux/kref.h> 36 #include <linux/kernel.h> 37 #include <linux/wait.h> 38 #include <linux/atomic.h> 39 40 enum kobject_action { 41 KOBJ_ADD, 42 KOBJ_REMOVE, 43 KOBJ_CHANGE, 44 KOBJ_MOVE, 45 KOBJ_ONLINE, 46 KOBJ_OFFLINE, 47 KOBJ_MAX 48 }; 49 50 struct kobject { 51 const char *name; 52 struct kref kref; 53 struct kobj_type *ktype; 54 }; 55 56 struct kobj_type { 57 void (*release)(struct kobject *kobj); 58 const struct sysfs_ops *sysfs_ops; 59 struct attribute **default_attrs; 60 }; 61 62 static inline int 63 kobject_uevent_env(struct kobject *kobj, enum kobject_action action, char *envp[]) 64 { 65 return 0; 66 } 67 68 extern __printf(4, 5) __must_check 69 int kobject_init_and_add(struct kobject *kobj, 70 struct kobj_type *ktype, struct kobject *parent, 71 const char *fmt, ...); 72 73 extern void kobject_release(struct kref *kref); 74 75 static inline void 76 kobject_put(struct kobject *kobj) 77 { 78 if (kobj != NULL) 79 kref_put(&kobj->kref, kobject_release); 80 } 81 82 static inline void 83 kobject_del(struct kobject *kobj) 84 { 85 /* 86 This function is supposed to unlink the object from a hierarchy. 87 There is no such hierarchy in the DragonFly implementation, doing 88 nothing is fine. 89 */ 90 } 91 92 #endif /* _LINUX_KOBJECT_H_ */ 93