1/*
 2 *  arch/s390/hypfs/hypfs.h
 3 *    Hypervisor filesystem for Linux on s390.
 4 *
 5 *    Copyright (C) IBM Corp. 2006
 6 *    Author(s): Michael Holzheu <holzheu@de.ibm.com>
 7 */
 8
 9#ifndef _HYPFS_H_
10#define _HYPFS_H_
11
12#include <linux/fs.h>
13#include <linux/types.h>
14#include <linux/debugfs.h>
15#include <linux/workqueue.h>
16#include <linux/kref.h>
 
17
18#define REG_FILE_MODE    0440
19#define UPDATE_FILE_MODE 0220
20#define DIR_MODE         0550
21
22extern struct dentry *hypfs_mkdir(struct super_block *sb, struct dentry *parent,
23				  const char *name);
24
25extern struct dentry *hypfs_create_u64(struct super_block *sb,
26				       struct dentry *dir, const char *name,
27				       __u64 value);
28
29extern struct dentry *hypfs_create_str(struct super_block *sb,
30				       struct dentry *dir, const char *name,
31				       char *string);
32
33/* LPAR Hypervisor */
34extern int hypfs_diag_init(void);
35extern void hypfs_diag_exit(void);
36extern int hypfs_diag_create_files(struct super_block *sb, struct dentry *root);
37
38/* VM Hypervisor */
39extern int hypfs_vm_init(void);
40extern void hypfs_vm_exit(void);
41extern int hypfs_vm_create_files(struct super_block *sb, struct dentry *root);
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
42
43/* debugfs interface */
44struct hypfs_dbfs_file;
45
46struct hypfs_dbfs_data {
47	void			*buf;
48	void			*buf_free_ptr;
49	size_t			size;
50	struct hypfs_dbfs_file	*dbfs_file;
51	struct kref		kref;
52};
53
54struct hypfs_dbfs_file {
55	const char	*name;
56	int		(*data_create)(void **data, void **data_free_ptr,
57				       size_t *size);
58	void		(*data_free)(const void *buf_free_ptr);
 
 
59
60	/* Private data for hypfs_dbfs.c */
61	struct hypfs_dbfs_data	*data;
62	struct delayed_work	data_free_work;
63	struct mutex		lock;
64	struct dentry		*dentry;
65};
66
67extern int hypfs_dbfs_init(void);
68extern void hypfs_dbfs_exit(void);
69extern int hypfs_dbfs_create_file(struct hypfs_dbfs_file *df);
70extern void hypfs_dbfs_remove_file(struct hypfs_dbfs_file *df);
71
72#endif /* _HYPFS_H_ */

 1/* SPDX-License-Identifier: GPL-2.0 */
 2/*
 
 3 *    Hypervisor filesystem for Linux on s390.
 4 *
 5 *    Copyright IBM Corp. 2006
 6 *    Author(s): Michael Holzheu <holzheu@de.ibm.com>
 7 */
 8
 9#ifndef _HYPFS_H_
10#define _HYPFS_H_
11
12#include <linux/fs.h>
13#include <linux/types.h>
14#include <linux/debugfs.h>
15#include <linux/workqueue.h>
16#include <linux/kref.h>
17#include <asm/hypfs.h>
18
19#define REG_FILE_MODE    0440
20#define UPDATE_FILE_MODE 0220
21#define DIR_MODE         0550
22
23extern struct dentry *hypfs_mkdir(struct dentry *parent, const char *name);
 
24
25extern struct dentry *hypfs_create_u64(struct dentry *dir, const char *name,
 
26				       __u64 value);
27
28extern struct dentry *hypfs_create_str(struct dentry *dir, const char *name,
 
29				       char *string);
30
31/* LPAR Hypervisor */
32extern int hypfs_diag_init(void);
33extern void hypfs_diag_exit(void);
34extern int hypfs_diag_create_files(struct dentry *root);
35
36/* VM Hypervisor */
37extern int hypfs_vm_init(void);
38extern void hypfs_vm_exit(void);
39extern int hypfs_vm_create_files(struct dentry *root);
40
41/* VM diagnose 0c */
42int hypfs_diag0c_init(void);
43void hypfs_diag0c_exit(void);
44
45/* Set Partition-Resource Parameter */
46void hypfs_sprp_init(void);
47void hypfs_sprp_exit(void);
48
49int __hypfs_fs_init(void);
50
51static inline int hypfs_fs_init(void)
52{
53	if (IS_ENABLED(CONFIG_S390_HYPFS_FS))
54		return __hypfs_fs_init();
55	return 0;
56}
57
58/* debugfs interface */
59struct hypfs_dbfs_file;
60
61struct hypfs_dbfs_data {
62	void			*buf;
63	void			*buf_free_ptr;
64	size_t			size;
65	struct hypfs_dbfs_file	*dbfs_file;
 
66};
67
68struct hypfs_dbfs_file {
69	const char	*name;
70	int		(*data_create)(void **data, void **data_free_ptr,
71				       size_t *size);
72	void		(*data_free)(const void *buf_free_ptr);
73	long		(*unlocked_ioctl) (struct file *, unsigned int,
74					   unsigned long);
75
76	/* Private data for hypfs_dbfs.c */
 
 
77	struct mutex		lock;
78	struct dentry		*dentry;
79};
80
 
81extern void hypfs_dbfs_exit(void);
82extern void hypfs_dbfs_create_file(struct hypfs_dbfs_file *df);
83extern void hypfs_dbfs_remove_file(struct hypfs_dbfs_file *df);
84
85#endif /* _HYPFS_H_ */