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| author | Andrey Smirnov <andrew.smirnov@gmail.com> | 2019-05-23 12:55:26 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-07-10 09:56:31 +0200 |
| commit | 4b6818e02588eb6eee0d741106dd71248e7a6c07 (patch) | |
| tree | e5c7f4246df8c1a6c3175d1eb9fd0fa18cb1c9d7 | |
| parent | 9a7435e1a5b94c8970a82254c27004dcaa8c440c (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.c | 22 |
1 files changed, 20 insertions, 2 deletions
diff --git a/drivers/input/misc/uinput.c b/drivers/input/misc/uinput.c index 2bb4c8633d3b..7cffff22a1ca 100644 --- a/drivers/input/misc/uinput.c +++ b/drivers/input/misc/uinput.c @@ -894,13 +894,31 @@ 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)); } |