Date: Sat, 25 Mar 2000 22:04:02 +1100 (EST) From: Bruce Evans <bde@zeta.org.au> To: Yoshinobu Inoue <shin@nd.net.fujitsu.co.jp> Cc: bmah@CA.Sandia.GOV, nnd@mail.nsk.ru, current@FreeBSD.ORG Subject: Re: 'machine/param.h' required for 'sys/socket.h' Message-ID: <Pine.BSF.4.21.0003252142050.654-100000@alphplex.bde.org> In-Reply-To: <20000325191659G.shin@nd.net.fujitsu.co.jp>
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On Sat, 25 Mar 2000, Yoshinobu Inoue wrote: > ... > There seems to be no message from bmah related to this, so I > now add a follow-up here. > > The authors' reply is that, > > >The X/Open (as well as POSIX I think) man pages for sendmsg() > >only list socket.h as an include file. > >The old BSD man pages list both param.h and socket.h. > > And, from `man sendmsg` on FreeBSD, only, > > >SYNOPSIS > > #include <sys/types.h> > > #include <sys/socket.h> > > are required. Same in the not-so-old BSD man pages (Lite1). > So I think machine/param.h should be included from > sys/socket.h for more portability. <machine/param.h> can't be included in any standard header (except in <sys/param.h>) because it gives massive, undocumented namespace pollution. The macro `MACHINE' is especially likely to conflict with an application macro. Instead, CMSG* should use _ALIGN() and _ALIGN() should be implemented somewhere that doesn't add any namespace pollution. We currently use <machine/ansi.h> for things like this, but it is already too overloaded. Bruce To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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