svn commit: r333111 - head/sys/dev/evdev

[Vladimir Kondratyev]

Author: wulf
Date: Mon Apr 30 10:34:16 2018
New Revision: 333111
URL: https://svnweb.freebsd.org/changeset/base/333111

Log:
  uinput: Add FreeBSD specific ioctl to set unique identifier of input device.
  
  Reviewed by:	gonzo
  Differential Revision:	https://reviews.freebsd.org/D13456

Modified:
  head/sys/dev/evdev/uinput.c
  head/sys/dev/evdev/uinput.h

Modified: head/sys/dev/evdev/uinput.c
==============================================================================
--- head/sys/dev/evdev/uinput.c	Mon Apr 30 10:24:50 2018	(r333110)
+++ head/sys/dev/evdev/uinput.c	Mon Apr 30 10:34:16 2018	(r333111)
@@ -604,6 +604,15 @@ uinput_ioctl_sub(struct uinput_cdev_state *state, u_lo
 		evdev_set_phys(state->ucs_evdev, buf);
 		return (0);
 
+	case UI_SET_BSDUNIQ:
+		if (state->ucs_state == UINPUT_RUNNING)
+			return (EINVAL);
+		ret = copyinstr(*(void **)data, buf, sizeof(buf), NULL);
+		if (ret != 0)
+			return (ret);
+		evdev_set_serial(state->ucs_evdev, buf);
+		return (0);
+
 	case UI_SET_SWBIT:
 		if (state->ucs_state == UINPUT_RUNNING ||
 		    intdata > SW_MAX || intdata < 0)

Modified: head/sys/dev/evdev/uinput.h
==============================================================================
--- head/sys/dev/evdev/uinput.h	Mon Apr 30 10:24:50 2018	(r333110)
+++ head/sys/dev/evdev/uinput.h	Mon Apr 30 10:34:16 2018	(r333111)
@@ -90,6 +90,13 @@ struct uinput_abs_setup {
 #define UI_BEGIN_FF_ERASE	_IOWR(UINPUT_IOCTL_BASE, 202, struct uinput_ff_erase)
 #define UI_END_FF_ERASE		_IOW(UINPUT_IOCTL_BASE, 203, struct uinput_ff_erase)
 
+/*
+ * FreeBSD specific. Set unique identifier of input device.
+ * Name and magic are chosen to reduce chances of clashing
+ * with possible future Linux extensions.
+ */
+#define UI_SET_BSDUNIQ		_IO(UINPUT_IOCTL_BASE, 109)
+
 #define EV_UINPUT		0x0101
 #define UI_FF_UPLOAD		1
 #define UI_FF_ERASE		2