[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-Id: <20190624092307.611971368@linuxfoundation.org>
Date: Mon, 24 Jun 2019 17:56:28 +0800
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-kernel@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
stable@...r.kernel.org,
"Pierre-Loup A. Griffais" <pgriffais@...vesoftware.com>,
Andrey Smirnov <andrew.smirnov@...il.com>,
Dmitry Torokhov <dmitry.torokhov@...il.com>
Subject: [PATCH 4.14 10/51] Input: uinput - add compat ioctl number translation for UI_*_FF_UPLOAD
From: Andrey Smirnov <andrew.smirnov@...il.com>
commit 7c7da40da1640ce6814dab1e8031b44e19e5a3f6 upstream.
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@...vesoftware.com>
Signed-off-by: Andrey Smirnov <andrew.smirnov@...il.com>
Cc: stable@...r.kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@...il.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
drivers/input/misc/uinput.c | 22 ++++++++++++++++++++--
1 file changed, 20 insertions(+), 2 deletions(-)
--- a/drivers/input/misc/uinput.c
+++ b/drivers/input/misc/uinput.c
@@ -1012,13 +1012,31 @@ static long uinput_ioctl(struct file *fi
#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));
}
Powered by blists - more mailing lists