CVS commit: xsrc/external/mit/xorg-server/dist/hw

["Izumi Tsutsui" <tsutsui%netbsd.org@localhost>]

Module Name:    xsrc
Committed By:   tsutsui
Date:           Tue Jun 17 15:53:57 UTC 2025

Modified Files:
        xsrc/external/mit/xorg-server/dist/hw/netbsd/x68k: mouseEmu3btn.c
            x68kIo.c x68kMouse.c
        xsrc/external/mit/xorg-server/dist/hw/sun: sunInit.c sunMouse.c

Log Message:
Properly apply DIX locking to input events in NetBSD-specific DDX servers.

This thread-based DIX locking approach using input_lock() and
input_unlock() has been available since X.Org 1.19.0:
 https://gitlab.freedesktop.org/xorg/xserver/-/commit/30ac7567980a1eb79d084a63e0e74e1d9a3af673

All xfree86 DDX implementations have switched to using these new
DIX locks instead of the old OsBlockSIGIO() / OsReleaseSIGIO() methods:
 https://gitlab.freedesktop.org/xorg/xserver/-/commit/6a5a4e60373c1386b311b2a8bb666c32d68a9d99

The xquartz DDX (an official X.Org server implementation) also uses
these locks for input events:
 https://gitlab.freedesktop.org/xorg/xserver/-/commit/7d6ebf3f4e4d517bb846d15a5deb131da19a267c

This should resolve occasional SIGSEGVs in the Xsun server caused
by NULL pointer dereferences around the event queue handlers
under heavy load.

Should be pulled up to netbsd-10.


To generate a diff of this commit:
cvs rdiff -u -r1.1 -r1.2 \
    xsrc/external/mit/xorg-server/dist/hw/netbsd/x68k/mouseEmu3btn.c
cvs rdiff -u -r1.3 -r1.4 \
    xsrc/external/mit/xorg-server/dist/hw/netbsd/x68k/x68kIo.c
cvs rdiff -u -r1.11 -r1.12 \
    xsrc/external/mit/xorg-server/dist/hw/netbsd/x68k/x68kMouse.c
cvs rdiff -u -r1.10 -r1.11 \
    xsrc/external/mit/xorg-server/dist/hw/sun/sunInit.c
cvs rdiff -u -r1.5 -r1.6 xsrc/external/mit/xorg-server/dist/hw/sun/sunMouse.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.