From owner-freebsd-hackers  Thu Dec 18 07:27:58 1997
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Date: Thu, 18 Dec 1997 10:08:28 -0500 (EST)
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From: "Gregory D. Moncreaff" <moncrg@bt340707.res.ray.com>
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To: freebsd-hackers@FreeBSD.ORG
Subject: sockaddr <-> sockaddr_* conversion macros
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it seems that these keep being created over
and over in different source and header files...
as well as the tons of (struct sockaddr.... ) casts

[look for satosin, sintosa, in netinet for example

why not "standardize" them:

sys/socket.h: #define SA ((struct sockaddr *)s) 
netinet/in.h: #define SIN ((struct sockaddr_in *)s)
netatalk/at.h: #define SAT ((struct sockaddr_at *)s)
etc...

the define of SA is of general user utility especially
with any level of prototype warnings enabled....