include/linux/ioctl32.h

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