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 | |
23 | extern struct dentry *hypfs_mkdir(struct dentry *parent, const char *name); |
24 | |
25 | extern struct dentry *hypfs_create_u64(struct dentry *dir, const char *name, |
26 | __u64 value); |
27 | |
28 | extern struct dentry *hypfs_create_str(struct dentry *dir, const char *name, |
29 | char *string); |
30 | |
31 | /* LPAR Hypervisor */ |
32 | extern int hypfs_diag_init(void); |
33 | extern void hypfs_diag_exit(void); |
34 | extern int hypfs_diag_create_files(struct dentry *root); |
35 | |
36 | /* VM Hypervisor */ |
37 | extern int hypfs_vm_init(void); |
38 | extern void hypfs_vm_exit(void); |
39 | extern int hypfs_vm_create_files(struct dentry *root); |
40 | |
41 | /* VM diagnose 0c */ |
42 | int hypfs_diag0c_init(void); |
43 | void hypfs_diag0c_exit(void); |
44 | |
45 | /* Set Partition-Resource Parameter */ |
46 | void hypfs_sprp_init(void); |
47 | void hypfs_sprp_exit(void); |
48 | |
49 | int __hypfs_fs_init(void); |
50 | |
51 | static 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 */ |
59 | struct hypfs_dbfs_file; |
60 | |
61 | struct hypfs_dbfs_data { |
62 | void *buf; |
63 | void *buf_free_ptr; |
64 | size_t size; |
65 | struct hypfs_dbfs_file *dbfs_file; |
66 | }; |
67 | |
68 | struct 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 | |
81 | extern void hypfs_dbfs_exit(void); |
82 | extern void hypfs_dbfs_create_file(struct hypfs_dbfs_file *df); |
83 | extern void hypfs_dbfs_remove_file(struct hypfs_dbfs_file *df); |
84 | |
85 | #endif /* _HYPFS_H_ */ |
86 | |