include/linux/ioctl32.h

   1 #ifndef IOCTL32_H
   2 #define IOCTL32_H 1
   3
   4 #include <linux/compiler.h>     /* for __deprecated */
   5
   6 struct file;
   7
   8 typedef int (*ioctl_trans_handler_t)(unsigned int, unsigned int,
   9                                         unsigned long, struct file *);
  10
  11 struct ioctl_trans {
  12         unsigned long cmd;
  13         ioctl_trans_handler_t handler;
  14         struct ioctl_trans *next;
  15 };
  16
  17 /*
  18  * Register an 32bit ioctl translation handler for ioctl cmd.
  19  *
  20  * handler == NULL: use 64bit ioctl handler.
  21  * arguments to handler:  fd: file descriptor
  22  *                        cmd: ioctl command.
  23  *                        arg: ioctl argument
  24  *                        struct file *file: file descriptor pointer.
  25  */
  26
  27 #ifdef CONFIG_COMPAT
  28 extern int __deprecated register_ioctl32_conversion(unsigned int cmd,
  29                                 ioctl_trans_handler_t handler);
  30 extern int __deprecated unregister_ioctl32_conversion(unsigned int cmd);
  31
  32 #else
  33
  34 #define register_ioctl32_conversion(cmd, handler)       ({ 0; })
  35 #define unregister_ioctl32_conversion(cmd)              ({ 0; })
  36
  37 #endif
  38
  39 #endif