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 int hypfs_sprp_init(void); 47 void hypfs_sprp_exit(void); 48 49 /* debugfs interface */ 50 struct hypfs_dbfs_file; 51 52 struct hypfs_dbfs_data { 53 void *buf; 54 void *buf_free_ptr; 55 size_t size; 56 struct hypfs_dbfs_file *dbfs_file; 57 }; 58 59 struct hypfs_dbfs_file { 60 const char *name; 61 int (*data_create)(void **data, void **data_free_ptr, 62 size_t *size); 63 void (*data_free)(const void *buf_free_ptr); 64 long (*unlocked_ioctl) (struct file *, unsigned int, 65 unsigned long); 66 67 /* Private data for hypfs_dbfs.c */ 68 struct mutex lock; 69 struct dentry *dentry; 70 }; 71 72 extern int hypfs_dbfs_init(void); 73 extern void hypfs_dbfs_exit(void); 74 extern int hypfs_dbfs_create_file(struct hypfs_dbfs_file *df); 75 extern void hypfs_dbfs_remove_file(struct hypfs_dbfs_file *df); 76 77 #endif /* _HYPFS_H_ */ 78