LXR linux/arch/s390/hypfs/hypfs.h

   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
  23extern struct dentry *hypfs_mkdir(struct dentry *parent, const char *name);
  24
  25extern struct dentry *hypfs_create_u64(struct dentry *dir, const char *name,
  26                                       __u64 value);
  27
  28extern struct dentry *hypfs_create_str(struct dentry *dir, const char *name,
  29                                       char *string);
  30
  31/* LPAR Hypervisor */
  32extern int hypfs_diag_init(void);
  33extern void hypfs_diag_exit(void);
  34extern int hypfs_diag_create_files(struct dentry *root);
  35
  36/* VM Hypervisor */
  37extern int hypfs_vm_init(void);
  38extern void hypfs_vm_exit(void);
  39extern int hypfs_vm_create_files(struct dentry *root);
  40
  41/* VM diagnose 0c */
  42int hypfs_diag0c_init(void);
  43void hypfs_diag0c_exit(void);
  44
  45/* Set Partition-Resource Parameter */
  46void hypfs_sprp_init(void);
  47void hypfs_sprp_exit(void);
  48
  49/* debugfs interface */
  50struct hypfs_dbfs_file;
  51
  52struct hypfs_dbfs_data {
  53        void                    *buf;
  54        void                    *buf_free_ptr;
  55        size_t                  size;
  56        struct hypfs_dbfs_file  *dbfs_file;
  57};
  58
  59struct 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
  72extern void hypfs_dbfs_init(void);
  73extern void hypfs_dbfs_exit(void);
  74extern void hypfs_dbfs_create_file(struct hypfs_dbfs_file *df);
  75extern void hypfs_dbfs_remove_file(struct hypfs_dbfs_file *df);
  76
  77#endif /* _HYPFS_H_ */
  78