Date: Sun, 27 Feb 2005 21:13:20 -0800 From: "David C. Myers" <myers@aedifice.net> To: freebsd-amd64@freebsd.org Subject: VNC on amd64: SIOCGIFCONF problems Message-ID: <4222A870.2090500@aedifice.net>
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VNC-3.3.7 in ports looks like it doesn't work because of 64-bit
alignment issues with SIOCGIFCONF. The offending code is in
Xvnc/programs/Xserver/os/access.c:
if (ifioctl (fd, (int) SIOCGIFCONF, (pointer) &ifc) < 0)
Error ("Getting interface configuration (4)");
which comes out in the trace file as:
28138 Xvnc CALL bind(0x1,0x7fffffffe670,0x13)
28138 Xvnc NAMI "/tmp/.X11-unix/X1"
28138 Xvnc RET bind 0
28138 Xvnc CALL listen(0x1,0x80)
28138 Xvnc RET listen 0
28138 Xvnc CALL umask(0x12)
28138 Xvnc RET umask 0
28138 Xvnc CALL ioctl(0,0xffffffffc0106924 ,0x7fffffffe030)
28138 Xvnc RET ioctl -1 errno 6 Device not configured
28138 Xvnc CALL writev(0x2,0x7fffffffd790,0x4)
28138 Xvnc GIO fd 2 wrote 59 bytes
"Getting interface configuration (4): Device not configured
"
(Actually, the very first error you'll get is a "Could not open default
font 'fixed'" message, but you can make that go away by running a font
server and passing its address to Xvnc...)
Is there a quick solution to this? A 32-bit compatibility shim?
Judging from Google, issues with this ioctl go back years, on all kinds
of platforms. getifaddrs() is the right way to do this on BSD?
-David.
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