Michael Holzheu | 24bbb1f | 2006-06-23 02:05:06 -0700 | [diff] [blame] | 1 | /* |
Michael Holzheu | 24bbb1f | 2006-06-23 02:05:06 -0700 | [diff] [blame] | 2 | * Hypervisor filesystem for Linux on s390. |
| 3 | * |
Heiko Carstens | a53c8fa | 2012-07-20 11:15:04 +0200 | [diff] [blame] | 4 | * Copyright IBM Corp. 2006 |
Michael Holzheu | 24bbb1f | 2006-06-23 02:05:06 -0700 | [diff] [blame] | 5 | * Author(s): Michael Holzheu <holzheu@de.ibm.com> |
| 6 | */ |
| 7 | |
| 8 | #ifndef _HYPFS_H_ |
| 9 | #define _HYPFS_H_ |
| 10 | |
| 11 | #include <linux/fs.h> |
| 12 | #include <linux/types.h> |
Michael Holzheu | 57b28f6 | 2010-05-17 10:00:20 +0200 | [diff] [blame] | 13 | #include <linux/debugfs.h> |
Michael Holzheu | 2fcb368 | 2011-01-05 12:47:43 +0100 | [diff] [blame] | 14 | #include <linux/workqueue.h> |
| 15 | #include <linux/kref.h> |
Martin Schwidefsky | 07be038 | 2014-01-24 09:18:52 +0100 | [diff] [blame] | 16 | #include <asm/hypfs.h> |
Michael Holzheu | 24bbb1f | 2006-06-23 02:05:06 -0700 | [diff] [blame] | 17 | |
| 18 | #define REG_FILE_MODE 0440 |
| 19 | #define UPDATE_FILE_MODE 0220 |
| 20 | #define DIR_MODE 0550 |
| 21 | |
Al Viro | a118cfd | 2013-07-19 18:05:21 +0400 | [diff] [blame] | 22 | extern struct dentry *hypfs_mkdir(struct dentry *parent, const char *name); |
Michael Holzheu | 24bbb1f | 2006-06-23 02:05:06 -0700 | [diff] [blame] | 23 | |
Al Viro | a118cfd | 2013-07-19 18:05:21 +0400 | [diff] [blame] | 24 | extern struct dentry *hypfs_create_u64(struct dentry *dir, const char *name, |
Michael Holzheu | 24bbb1f | 2006-06-23 02:05:06 -0700 | [diff] [blame] | 25 | __u64 value); |
| 26 | |
Al Viro | a118cfd | 2013-07-19 18:05:21 +0400 | [diff] [blame] | 27 | extern struct dentry *hypfs_create_str(struct dentry *dir, const char *name, |
Michael Holzheu | 24bbb1f | 2006-06-23 02:05:06 -0700 | [diff] [blame] | 28 | char *string); |
| 29 | |
Michael Holzheu | 31cb4bd | 2007-02-05 21:18:29 +0100 | [diff] [blame] | 30 | /* LPAR Hypervisor */ |
| 31 | extern int hypfs_diag_init(void); |
| 32 | extern void hypfs_diag_exit(void); |
Al Viro | e334cf4 | 2013-07-19 17:10:21 +0400 | [diff] [blame] | 33 | extern int hypfs_diag_create_files(struct dentry *root); |
Michael Holzheu | 31cb4bd | 2007-02-05 21:18:29 +0100 | [diff] [blame] | 34 | |
| 35 | /* VM Hypervisor */ |
| 36 | extern int hypfs_vm_init(void); |
Michael Holzheu | 57b28f6 | 2010-05-17 10:00:20 +0200 | [diff] [blame] | 37 | extern void hypfs_vm_exit(void); |
Al Viro | f78e41e | 2013-07-19 17:03:49 +0400 | [diff] [blame] | 38 | extern int hypfs_vm_create_files(struct dentry *root); |
Michael Holzheu | 31cb4bd | 2007-02-05 21:18:29 +0100 | [diff] [blame] | 39 | |
Martin Schwidefsky | 07be038 | 2014-01-24 09:18:52 +0100 | [diff] [blame] | 40 | /* Set Partition-Resource Parameter */ |
| 41 | int hypfs_sprp_init(void); |
| 42 | void hypfs_sprp_exit(void); |
| 43 | |
Michael Holzheu | 2fcb368 | 2011-01-05 12:47:43 +0100 | [diff] [blame] | 44 | /* debugfs interface */ |
| 45 | struct hypfs_dbfs_file; |
| 46 | |
| 47 | struct hypfs_dbfs_data { |
| 48 | void *buf; |
| 49 | void *buf_free_ptr; |
| 50 | size_t size; |
Justin P. Mattock | 6eab04a | 2011-04-08 19:49:08 -0700 | [diff] [blame] | 51 | struct hypfs_dbfs_file *dbfs_file; |
Michael Holzheu | 2fcb368 | 2011-01-05 12:47:43 +0100 | [diff] [blame] | 52 | struct kref kref; |
| 53 | }; |
| 54 | |
| 55 | struct hypfs_dbfs_file { |
| 56 | const char *name; |
| 57 | int (*data_create)(void **data, void **data_free_ptr, |
| 58 | size_t *size); |
| 59 | void (*data_free)(const void *buf_free_ptr); |
Martin Schwidefsky | 07be038 | 2014-01-24 09:18:52 +0100 | [diff] [blame] | 60 | long (*unlocked_ioctl) (struct file *, unsigned int, |
| 61 | unsigned long); |
Michael Holzheu | 2fcb368 | 2011-01-05 12:47:43 +0100 | [diff] [blame] | 62 | |
| 63 | /* Private data for hypfs_dbfs.c */ |
| 64 | struct hypfs_dbfs_data *data; |
| 65 | struct delayed_work data_free_work; |
| 66 | struct mutex lock; |
| 67 | struct dentry *dentry; |
| 68 | }; |
| 69 | |
| 70 | extern int hypfs_dbfs_init(void); |
| 71 | extern void hypfs_dbfs_exit(void); |
| 72 | extern int hypfs_dbfs_create_file(struct hypfs_dbfs_file *df); |
| 73 | extern void hypfs_dbfs_remove_file(struct hypfs_dbfs_file *df); |
| 74 | |
Michael Holzheu | 24bbb1f | 2006-06-23 02:05:06 -0700 | [diff] [blame] | 75 | #endif /* _HYPFS_H_ */ |