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Commit c5b3533a authored by Dmitry Torokhov's avatar Dmitry Torokhov
Browse files

Input: uinput - specify exact bit sizes on userspace APIs 



Switch to using __u32/__s32 instead of ordinary 'int' in structures
forming userspace API.

Also internally make request_id unsigned int.

Signed-off-by: default avatarDmitry Torokhov <dtor@mail.ru>
parent 00ce756c

drivers/input/misc/uinput.c

+6 −5
Original line number Diff line number Diff line
@@ -59,7 +59,7 @@ static int uinput_dev_event(struct input_dev *dev, unsigned int type, unsigned i 
static bool uinput_request_alloc_id(struct uinput_device *udev,

				    struct uinput_request *request)

{

	int id;

	unsigned int id;

	bool reserved = false;



	spin_lock(&udev->requests_lock);
@@ -77,10 +77,11 @@ static bool uinput_request_alloc_id(struct uinput_device *udev, 
	return reserved;

}



static struct uinput_request *uinput_request_find(struct uinput_device *udev, int id)

static struct uinput_request *uinput_request_find(struct uinput_device *udev,

						  unsigned int id)

{

	/* Find an input request, by ID. Returns NULL if the ID isn't valid. */

	if (id >= UINPUT_NUM_REQUESTS || id < 0)

	if (id >= UINPUT_NUM_REQUESTS)

		return NULL;



	return udev->requests[id];
@@ -556,8 +557,8 @@ static int uinput_release(struct inode *inode, struct file *file) 


#ifdef CONFIG_COMPAT

struct uinput_ff_upload_compat {

	int			request_id;

	int			retval;

	__u32			request_id;

	__s32			retval;

	struct ff_effect_compat	effect;

	struct ff_effect_compat	old;

};

include/linux/uinput.h

+14 −13
Original line number Diff line number Diff line
@@ -32,6 +32,7 @@ 
 *		- first public version

 */



#include <linux/types.h>

#include <linux/input.h>



#define UINPUT_VERSION		3
@@ -44,14 +45,14 @@ 
enum uinput_state { UIST_NEW_DEVICE, UIST_SETUP_COMPLETE, UIST_CREATED };



struct uinput_request {

	int			id;

	int			code;	/* UI_FF_UPLOAD, UI_FF_ERASE */

	unsigned int		id;

	unsigned int		code;	/* UI_FF_UPLOAD, UI_FF_ERASE */



	int			retval;

	struct completion	done;



	union {

		int		effect_id;

		unsigned int	effect_id;

		struct {

			struct ff_effect *effect;

			struct ff_effect *old;
@@ -77,16 +78,16 @@ struct uinput_device { 
#endif	/* __KERNEL__ */



struct uinput_ff_upload {

	int			request_id;

	int			retval;

	__u32			request_id;

	__s32			retval;

	struct ff_effect	effect;

	struct ff_effect	old;

};



struct uinput_ff_erase {

	int			request_id;

	int			retval;

	int			effect_id;

	__u32			request_id;

	__s32			retval;

	__u32			effect_id;

};



/* ioctl */
@@ -166,11 +167,11 @@ struct uinput_ff_erase { 
struct uinput_user_dev {

	char name[UINPUT_MAX_NAME_SIZE];

	struct input_id id;

	int ff_effects_max;

	int absmax[ABS_CNT];

	int absmin[ABS_CNT];

	int absfuzz[ABS_CNT];

	int absflat[ABS_CNT];

	__u32 ff_effects_max;

	__s32 absmax[ABS_CNT];

	__s32 absmin[ABS_CNT];

	__s32 absfuzz[ABS_CNT];

	__s32 absflat[ABS_CNT];

};

#endif	/* __UINPUT_H_ */