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| author | Peter Hutterer <peter.hutterer@who-t.net> | 2024-08-27 11:19:29 +0300 |
|---|---|---|
| committer | Benjamin Tissoires <bentiss@kernel.org> | 2024-08-29 11:39:37 +0300 |
| commit | b31c9d9dc343146b9f4ce67b4eee748c49296e99 (patch) | |
| tree | 012f5d5309ac4ea6e605d5aa7b9ab0363ac2d365 /include/uapi/linux | |
| parent | 6e4436539ae182dc86d57d13849862bcafaa4709 (diff) | |
| download | linux-b31c9d9dc343146b9f4ce67b4eee748c49296e99.tar.xz | |
HID: hidraw: add HIDIOCREVOKE ioctl
There is a need for userspace applications to open HID devices directly.
Use-cases include configuration of gaming mice or direct access to
joystick devices. The latter is currently handled by the uaccess tag in
systemd, other devices include more custom/local configurations or just
sudo.
A better approach is what we already have for evdev devices: give the
application a file descriptor and revoke it when it may no longer access
that device.
This patch is the hidraw equivalent to the EVIOCREVOKE ioctl, see
commit c7dc65737c9a ("Input: evdev - add EVIOCREVOKE ioctl") for full
details.
An MR for systemd-logind has been filed here:
https://github.com/systemd/systemd/pull/33970
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Link: https://patch.msgid.link/20240827-hidraw-revoke-v5-1-d004a7451aea@kernel.org
Signed-off-by: Benjamin Tissoires <bentiss@kernel.org>
Diffstat (limited to 'include/uapi/linux')
| -rw-r--r-- | include/uapi/linux/hidraw.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/uapi/linux/hidraw.h b/include/uapi/linux/hidraw.h index 33ebad81720a..d5ee269864e0 100644 --- a/include/uapi/linux/hidraw.h +++ b/include/uapi/linux/hidraw.h @@ -46,6 +46,7 @@ struct hidraw_devinfo { /* The first byte of SOUTPUT and GOUTPUT is the report number */ #define HIDIOCSOUTPUT(len) _IOC(_IOC_WRITE|_IOC_READ, 'H', 0x0B, len) #define HIDIOCGOUTPUT(len) _IOC(_IOC_WRITE|_IOC_READ, 'H', 0x0C, len) +#define HIDIOCREVOKE _IOW('H', 0x0D, int) /* Revoke device access */ #define HIDRAW_FIRST_MINOR 0 #define HIDRAW_MAX_DEVICES 64 |