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kernel/linux-imx6_3.14.28/arch/s390/hypfs/hypfs.h 1.86 KB
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  /*
   *    Hypervisor filesystem for Linux on s390.
   *
   *    Copyright IBM Corp. 2006
   *    Author(s): Michael Holzheu <holzheu@de.ibm.com>
   */
  
  #ifndef _HYPFS_H_
  #define _HYPFS_H_
  
  #include <linux/fs.h>
  #include <linux/types.h>
  #include <linux/debugfs.h>
  #include <linux/workqueue.h>
  #include <linux/kref.h>
  #include <asm/hypfs.h>
  
  #define REG_FILE_MODE    0440
  #define UPDATE_FILE_MODE 0220
  #define DIR_MODE         0550
  
  extern struct dentry *hypfs_mkdir(struct dentry *parent, const char *name);
  
  extern struct dentry *hypfs_create_u64(struct dentry *dir, const char *name,
  				       __u64 value);
  
  extern struct dentry *hypfs_create_str(struct dentry *dir, const char *name,
  				       char *string);
  
  /* LPAR Hypervisor */
  extern int hypfs_diag_init(void);
  extern void hypfs_diag_exit(void);
  extern int hypfs_diag_create_files(struct dentry *root);
  
  /* VM Hypervisor */
  extern int hypfs_vm_init(void);
  extern void hypfs_vm_exit(void);
  extern int hypfs_vm_create_files(struct dentry *root);
  
  /* Set Partition-Resource Parameter */
  int hypfs_sprp_init(void);
  void hypfs_sprp_exit(void);
  
  /* debugfs interface */
  struct hypfs_dbfs_file;
  
  struct hypfs_dbfs_data {
  	void			*buf;
  	void			*buf_free_ptr;
  	size_t			size;
  	struct hypfs_dbfs_file	*dbfs_file;
  	struct kref		kref;
  };
  
  struct hypfs_dbfs_file {
  	const char	*name;
  	int		(*data_create)(void **data, void **data_free_ptr,
  				       size_t *size);
  	void		(*data_free)(const void *buf_free_ptr);
  	long		(*unlocked_ioctl) (struct file *, unsigned int,
  					   unsigned long);
  
  	/* Private data for hypfs_dbfs.c */
  	struct hypfs_dbfs_data	*data;
  	struct delayed_work	data_free_work;
  	struct mutex		lock;
  	struct dentry		*dentry;
  };
  
  extern int hypfs_dbfs_init(void);
  extern void hypfs_dbfs_exit(void);
  extern int hypfs_dbfs_create_file(struct hypfs_dbfs_file *df);
  extern void hypfs_dbfs_remove_file(struct hypfs_dbfs_file *df);
  
  #endif /* _HYPFS_H_ */