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From Cliff Skolnick <>
Subject Re: Solaris Question (fwd)
Date Mon, 01 Apr 1996 23:56:24 GMT

>From those in the know at sun about the funny file for name stuff...
Looks like somethign top secret. :)  Usually stuff like this will get 
documented in the next release.

And did not hear it from me....

"Doors" are a new fast local IPC mechanism in Solaris 2.5.   Doors are faster
than any other local IPC, including unix domain sockets. I believe the program
interfaces for using doors are undocumented in Solaris 2.5, but there are a
few services that use them.  One of these is the name service cache daemon
(/usr/sbin/nscd - see nscd(1m)).  The front-end library function
gethostbyname() and gethostbyaddr() make a door call to the nscd process, which
does the actual DNS lookup, and caches the result for other applications to
use.  That file "/etc/.name_service_door" is the filesystem entry for the door
that the library function uses to talk to the nscd process.

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