arch/s390/hypfs/hypfs.h

   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_ */