Date: Sun, 29 Dec 2002 20:55:58 GMT From: Mark Valentine <mark@thuvia.demon.co.uk> To: Garrett Wollman <wollman@lcs.mit.edu> Cc: cvs-committers@freebsd.org, cvs-all@freebsd.org Subject: Re: cvs commit: src/sys/sys _iovec.h socket.h uio.h Message-ID: <200212292055.gBTKtwMk040146@dotar.thuvia.org> In-Reply-To: <200212291938.gBTJcPk1009103@khavrinen.lcs.mit.edu>
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> From: Garrett Wollman <wollman@lcs.mit.edu> > Date: Sun 29 Dec, 2002 > Subject: Re: cvs commit: src/sys/sys _iovec.h socket.h uio.h > <<On Sun, 29 Dec 2002 19:24:37 GMT, Mark Valentine <mark@thuvia.demon.co.uk> said: > > > However, ssize_t is _not_ defined in <aio.h>, <mqueue.h>, <sys/socket.h>, > > where it is also used, though each of these headers _may_ (not _shall_) > > make ssize_t visible as defined in <sys/types.h> and/or <sys/uio.h>. This > > may be a bug in the standard. > > I think the answer is that it is possible for the implementation to > declare those interfaces by using another type known by the > implementation to be equivalent to ssize_t. I didn't think even that much was required - maybe there's a bit of the standard which implies this that I've missed? Ah, I see now that the synopsis for recvmsg() doesn't show <sys/types.h> as being required. I see also that other older interfaces such as stat() and mkdir() no longer need the specific inclusion of <sys/types.h>, which is a change from older versions of the standard. I see the intention now, even if I've missed the specific wording in the standard. Portable code, however, probably includes <sys/types.h> explicitly as required by older versions of the standard and non-standard implementations. Cheers, Mark. -- Mark Valentine, Thuvia Labs <mark@thuvia.co.uk> <http://www.thuvia.co.uk>; "Tigers will do ANYTHING for a tuna fish sandwich." Mark Valentine uses "We're kind of stupid that way." *munch* *munch* and endorses FreeBSD -- <http://www.calvinandhobbes.com>; <http://www.freebsd.org>; To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe cvs-all" in the body of the message
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