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Input: uinput - add compat ioctl number translation for UI_*_FF_UPLOAD

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In the case of compat syscall ioctl numbers for UI_BEGIN_FF_UPLOAD and
UI_END_FF_UPLOAD need to be adjusted before being passed on
uinput_ioctl_handler() since code built with -m32 will be passing
slightly different values. Extend the code already covering
UI_SET_PHYS to cover UI_BEGIN_FF_UPLOAD and UI_END_FF_UPLOAD as well.

Reported-by: Pierre-Loup A. Griffais <pgriffais@valvesoftware.com>
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
Andrey Smirnov 2019-05-23 12:55:26 -07:00 committed by Dmitry Torokhov
parent 0e658060e5
commit 7c7da40da1
1 changed files with 20 additions and 2 deletions
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22
drivers/input/misc/uinput.c
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@ -1051,13 +1051,31 @@ static long uinput_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
#ifdef CONFIG_COMPAT
#define UI_SET_PHYS_COMPAT _IOW(UINPUT_IOCTL_BASE, 108, compat_uptr_t)
/*
* These IOCTLs change their size and thus their numbers between
* 32 and 64 bits.
*/
#define UI_SET_PHYS_COMPAT \
_IOW(UINPUT_IOCTL_BASE, 108, compat_uptr_t)
#define UI_BEGIN_FF_UPLOAD_COMPAT \
_IOWR(UINPUT_IOCTL_BASE, 200, struct uinput_ff_upload_compat)
#define UI_END_FF_UPLOAD_COMPAT \
_IOW(UINPUT_IOCTL_BASE, 201, struct uinput_ff_upload_compat)
static long uinput_compat_ioctl(struct file *file,
unsigned int cmd, unsigned long arg)
{
if (cmd == UI_SET_PHYS_COMPAT)
switch (cmd) {
case UI_SET_PHYS_COMPAT:
cmd = UI_SET_PHYS;
break;
case UI_BEGIN_FF_UPLOAD_COMPAT:
cmd = UI_BEGIN_FF_UPLOAD;
break;
case UI_END_FF_UPLOAD_COMPAT:
cmd = UI_END_FF_UPLOAD;
break;
}
return uinput_ioctl_handler(file, cmd, arg, compat_ptr(arg));
}