LCOV - code coverage report
Current view: top level - drivers/input - input-compat.h (source / functions) Hit Total Coverage
Test: coverage.info Lines: 2 2 100.0 %
Date: 2017-01-25 Functions: 0 0 -

          Line data    Source code
       1             : #ifndef _INPUT_COMPAT_H
       2             : #define _INPUT_COMPAT_H
       3             : 
       4             : /*
       5             :  * 32bit compatibility wrappers for the input subsystem.
       6             :  *
       7             :  * Very heavily based on evdev.c - Copyright (c) 1999-2002 Vojtech Pavlik
       8             :  *
       9             :  * This program is free software; you can redistribute it and/or modify it
      10             :  * under the terms of the GNU General Public License version 2 as published by
      11             :  * the Free Software Foundation.
      12             :  */
      13             : 
      14             : #include <linux/compiler.h>
      15             : #include <linux/compat.h>
      16             : #include <linux/input.h>
      17             : 
      18             : #ifdef CONFIG_COMPAT
      19             : 
      20             : /* Note to the author of this code: did it ever occur to
      21             :    you why the ifdefs are needed? Think about it again. -AK */
      22             : #ifdef CONFIG_X86_64
      23             : #  define INPUT_COMPAT_TEST is_compat_task()
      24             : #elif defined(CONFIG_IA64)
      25             : #  define INPUT_COMPAT_TEST IS_IA32_PROCESS(task_pt_regs(current))
      26             : #elif defined(CONFIG_S390)
      27             : #  define INPUT_COMPAT_TEST test_thread_flag(TIF_31BIT)
      28             : #elif defined(CONFIG_MIPS)
      29             : #  define INPUT_COMPAT_TEST test_thread_flag(TIF_32BIT_ADDR)
      30             : #else
      31             : #  define INPUT_COMPAT_TEST test_thread_flag(TIF_32BIT)
      32             : #endif
      33             : 
      34             : struct input_event_compat {
      35             :         struct compat_timeval time;
      36             :         __u16 type;
      37             :         __u16 code;
      38             :         __s32 value;
      39             : };
      40           1 : 
      41             : struct ff_periodic_effect_compat {
      42             :         __u16 waveform;
      43             :         __u16 period;
      44             :         __s16 magnitude;
      45             :         __s16 offset;
      46             :         __u16 phase;
      47             : 
      48             :         struct ff_envelope envelope;
      49             : 
      50             :         __u32 custom_len;
      51             :         compat_uptr_t custom_data;
      52             : };
      53           2 : 
      54             : struct ff_effect_compat {
      55             :         __u16 type;
      56             :         __s16 id;
      57             :         __u16 direction;
      58             :         struct ff_trigger trigger;
      59             :         struct ff_replay replay;
      60             : 
      61             :         union {
      62             :                 struct ff_constant_effect constant;
      63             :                 struct ff_ramp_effect ramp;
      64             :                 struct ff_periodic_effect_compat periodic;
      65             :                 struct ff_condition_effect condition[2]; /* One for each axis */
      66             :                 struct ff_rumble_effect rumble;
      67             :         } u;
      68             : };
      69             : 
      70             : static inline size_t input_event_size(void)
      71             : {
      72             :         return INPUT_COMPAT_TEST ?
      73             :                 sizeof(struct input_event_compat) : sizeof(struct input_event);
      74             : }
      75             : 
      76             : #else
      77             : 
      78             : static inline size_t input_event_size(void)
      79             : {
      80             :         return sizeof(struct input_event);
      81             : }
      82             : 
      83             : #endif /* CONFIG_COMPAT */
      84             : 
      85             : int input_event_from_user(const char __user *buffer,
      86             :                          struct input_event *event);
      87             : 
      88             : int input_event_to_user(char __user *buffer,
      89             :                         const struct input_event *event);
      90             : 
      91             : int input_ff_effect_from_user(const char __user *buffer, size_t size,
      92             :                               struct ff_effect *effect);
      93             : 
      94             : #endif /* _INPUT_COMPAT_H */

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