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authorAndrey Smirnov <andrew.smirnov@gmail.com>2019-05-23 12:55:26 -0700
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2019-06-25 11:36:51 +0800
commitfadee027bf8fa90f3057a98a89871cbe8dd4adf5 (patch)
tree9ce1dfcc01e3e6d7abe6b33ddbc31eebd055fb3d
parentf21813e88df200c5df155decf17c8e396dcfe66b (diff)
Input: uinput - add compat ioctl number translation for UI_*_FF_UPLOAD
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@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> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--drivers/input/misc/uinput.c22
1 files changed, 20 insertions, 2 deletions
diff --git a/drivers/input/misc/uinput.c b/drivers/input/misc/uinput.c
index 8c95d3f78072..4330f181e2bc 100644
--- a/drivers/input/misc/uinput.c
+++ b/drivers/input/misc/uinput.c
@@ -1012,13 +1012,31 @@ 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));
}