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 super_block *sb, struct dentry *parent, 22 const char *name); 23 24 extern struct dentry *hypfs_create_u64(struct super_block *sb, 25 struct dentry *dir, const char *name, 26 __u64 value); 27 28 extern struct dentry *hypfs_create_str(struct super_block *sb, 29 struct dentry *dir, const char *name, 30 char *string); 31 32 /* LPAR Hypervisor */ 33 extern int hypfs_diag_init(void); 34 extern void hypfs_diag_exit(void); 35 extern int hypfs_diag_create_files(struct super_block *sb, struct dentry *root); 36 37 /* VM Hypervisor */ 38 extern int hypfs_vm_init(void); 39 extern void hypfs_vm_exit(void); 40 extern int hypfs_vm_create_files(struct super_block *sb, struct dentry *root); 41 42 /* debugfs interface */ 43 struct hypfs_dbfs_file; 44 45 struct hypfs_dbfs_data { 46 void *buf; 47 void *buf_free_ptr; 48 size_t size; 49 struct hypfs_dbfs_file *dbfs_file; 50 struct kref kref; 51 }; 52 53 struct hypfs_dbfs_file { 54 const char *name; 55 int (*data_create)(void **data, void **data_free_ptr, 56 size_t *size); 57 void (*data_free)(const void *buf_free_ptr); 58 59 /* Private data for hypfs_dbfs.c */ 60 struct hypfs_dbfs_data *data; 61 struct delayed_work data_free_work; 62 struct mutex lock; 63 struct dentry *dentry; 64 }; 65 66 extern int hypfs_dbfs_init(void); 67 extern void hypfs_dbfs_exit(void); 68 extern int hypfs_dbfs_create_file(struct hypfs_dbfs_file *df); 69 extern void hypfs_dbfs_remove_file(struct hypfs_dbfs_file *df); 70 71 #endif /* _HYPFS_H_ */ 72