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Input: uinput - handle compat ioctl for UI_SET_PHYS
When running a 32-bit userspace on a 64-bit kernel, the UI_SET_PHYS ioctl needs to be treated with special care, as it has the pointer size encoded in the command. Signed-off-by: Ricky Liang <jcliang@chromium.org> Cc: stable@vger.kernel.org Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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@ -981,9 +981,15 @@ static long uinput_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
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#ifdef CONFIG_COMPAT
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#define UI_SET_PHYS_COMPAT _IOW(UINPUT_IOCTL_BASE, 108, compat_uptr_t)
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static long uinput_compat_ioctl(struct file *file,
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unsigned int cmd, unsigned long arg)
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{
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if (cmd == UI_SET_PHYS_COMPAT)
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cmd = UI_SET_PHYS;
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return uinput_ioctl_handler(file, cmd, arg, compat_ptr(arg));
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}
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#endif
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