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Message #04404
[Bug 698007] Re: lirc init script can create circular symlinks
I've tested that this patch applies cleanly to natty. I have not, and
likely won't be able to, test the functionality with natty, as my two IR
devices are in use in a mythtv machine I'm unwilling to reinstall with
natty.
** Patch added: "patch that merges the patches from both bugs"
https://bugs.launchpad.net/ubuntu/+source/lirc/+bug/698007/+attachment/1957482/+files/lirc.init.patch
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https://bugs.launchpad.net/bugs/698007
Title:
lirc init script can create circular symlinks
Status in “lirc” package in Ubuntu:
New
Bug description:
Binary package hint: lirc
This is related to bug 697999 and specifically my need to work around
that bug.
If, in /etc/lirc/hardware.conf, you set REMOTE_SOCKET to /dev/lircd1
and transmitter_socket to /dev/lircd, then the lirc init script will
create a circular symlink loop between /dev/lircd and /dev/lircd1.
The script tests if OLD_SOCKET != REMOTE_SOCKET, but it should also
make sure that OLD_SOCKET != TRANSMITTER_SOCKET Additionally, before
removing ${OLD_SOCKET}1 the script should do the same checks, which it
currently does none.
A patch for this solution is attached.
My preference would actually to be to use the new socket locations in
/var/run/lircd, however, then the the order I create those sockets is
irrelevant, as the magical symlinking always symlinks /dev/lircd to
the remote and /dev/lircd1 to the transmitter, which is backwards from
how I need it to be. I'm not actually sure what the best fix is here.
Perhaps it could just test if the socket is /var/run/lirc/lircd\d+ and
if it is, then just symlink to /dev/$(basename $REMOTE_SOCKET) If
this is an acceptable solution, I can probably write up a patch for
this behavior if necessary. However, there may be other cases the
current behavior is designed to correct for. If bug 697999 gets
fixed, then this problem will no longer affect me.
References