Top Document: comp.sys.3b1 FAQ part1 Previous Document: 4.17. Any tips on building Cnews? Next Document: 5.0. Upgrading See reader questions & answers on this topic! - Help others by sharing your knowledge /etc/lddrv/lipc is the loadable device driver that implements System V inter-process communications on the UNIX PC (semget(), etc.). /etc/lddrv/nipc is a newer implementation of this driver which fixes an IPC bug, but was never fully tested. The default driver loaded by /etc/lddrv/drivers is lipc, and in fact, this is the driver which the program ipcs looks for when it reports on IPC usage. No bugs with nipc have been uncovered since it was made available (87?), and many people would rather run the "better" driver than stick with the old lipc. There are two approaches for replacing lipc with nipc. The most obvious way is to edit /etc/lddrv/drivers to replace lipc with nipc for when the system is next booted, then replacing the in-core lipc with nipc with the following sequence: # cd /etc/lddrv # ./lddrv -dv lipc # ./lddrv -av nipc Unfortunately, ipcs will not find the lipc driver, and so won't give any IPC status. This can be overcome by wielding a binary editor in the general direction of /usr/bin/ipcs, replacing the hard-coded instances of "lipc" with "nipc". Another method is to remove lipc from core (./lddrv -dv lipc), rename its files to something benign (lipc -> lipc.old, lipc.o -> lipc.o.old, ifile.lipc -> ifile.lipc.old), rename the nipc files to be lipc (nipc -> lipc, nipc.o -> lipc.o, ifile.nipc -> ifile.lipc), and finally reload the new lipc (./lddrv -av lipc). User Contributions:Top Document: comp.sys.3b1 FAQ part1 Previous Document: 4.17. Any tips on building Cnews? Next Document: 5.0. Upgrading Part1 - Part2 - Single Page [ Usenet FAQs | Web FAQs | Documents | RFC Index ] Send corrections/additions to the FAQ Maintainer: jbunch@nyx.nyx.net (John B. Bunch)
Last Update March 27 2014 @ 02:11 PM
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