xref: /linux/fs/xfs/xfs_sysfs.h (revision 9a87ffc99ec8eb8d35eed7c4f816d75f5cc9662e)
1 // SPDX-License-Identifier: GPL-2.0
2 /*
3  * Copyright (c) 2014 Red Hat, Inc.
4  * All Rights Reserved.
5  */
6 
7 #ifndef __XFS_SYSFS_H__
8 #define __XFS_SYSFS_H__
9 
10 extern const struct kobj_type xfs_mp_ktype;	/* xfs_mount */
11 extern const struct kobj_type xfs_dbg_ktype;	/* debug */
12 extern const struct kobj_type xfs_log_ktype;	/* xlog */
13 extern const struct kobj_type xfs_stats_ktype;	/* stats */
14 
15 static inline struct xfs_kobj *
to_kobj(struct kobject * kobject)16 to_kobj(struct kobject *kobject)
17 {
18 	return container_of(kobject, struct xfs_kobj, kobject);
19 }
20 
21 static inline void
xfs_sysfs_release(struct kobject * kobject)22 xfs_sysfs_release(struct kobject *kobject)
23 {
24 	struct xfs_kobj *kobj = to_kobj(kobject);
25 	complete(&kobj->complete);
26 }
27 
28 static inline int
xfs_sysfs_init(struct xfs_kobj * kobj,const struct kobj_type * ktype,struct xfs_kobj * parent_kobj,const char * name)29 xfs_sysfs_init(
30 	struct xfs_kobj		*kobj,
31 	const struct kobj_type	*ktype,
32 	struct xfs_kobj		*parent_kobj,
33 	const char		*name)
34 {
35 	struct kobject		*parent;
36 	int err;
37 
38 	parent = parent_kobj ? &parent_kobj->kobject : NULL;
39 	init_completion(&kobj->complete);
40 	err = kobject_init_and_add(&kobj->kobject, ktype, parent, "%s", name);
41 	if (err)
42 		kobject_put(&kobj->kobject);
43 
44 	return err;
45 }
46 
47 static inline void
xfs_sysfs_del(struct xfs_kobj * kobj)48 xfs_sysfs_del(
49 	struct xfs_kobj	*kobj)
50 {
51 	kobject_del(&kobj->kobject);
52 	kobject_put(&kobj->kobject);
53 	wait_for_completion(&kobj->complete);
54 }
55 
56 int	xfs_error_sysfs_init(struct xfs_mount *mp);
57 void	xfs_error_sysfs_del(struct xfs_mount *mp);
58 
59 #endif	/* __XFS_SYSFS_H__ */
60