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