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 #include <asm/hypfs.h> 17 18 #define REG_FILE_MODE 0440 19 #define UPDATE_FILE_MODE 0220 20 #define DIR_MODE 0550 21 22 extern struct dentry *hypfs_mkdir(struct dentry *parent, const char *name); 23 24 extern struct dentry *hypfs_create_u64(struct dentry *dir, const char *name, 25 __u64 value); 26 27 extern struct dentry *hypfs_create_str(struct dentry *dir, const char *name, 28 char *string); 29 30 /* LPAR Hypervisor */ 31 extern int hypfs_diag_init(void); 32 extern void hypfs_diag_exit(void); 33 extern int hypfs_diag_create_files(struct dentry *root); 34 35 /* VM Hypervisor */ 36 extern int hypfs_vm_init(void); 37 extern void hypfs_vm_exit(void); 38 extern int hypfs_vm_create_files(struct dentry *root); 39 40 /* Set Partition-Resource Parameter */ 41 int hypfs_sprp_init(void); 42 void hypfs_sprp_exit(void); 43 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; 51 struct hypfs_dbfs_file *dbfs_file; 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); 60 long (*unlocked_ioctl) (struct file *, unsigned int, 61 unsigned long); 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 75 #endif /* _HYPFS_H_ */ 76