Date: Sat, 21 Aug 1999 18:42:46 -0700 From: John-Mark Gurney <gurney_j@efn.org> To: Wes Peters <wes@softweyr.com> Cc: hackers@FreeBSD.ORG Subject: Re: mmap mapped segment length Message-ID: <19990821184246.00134@hydrogen.fircrest.net> In-Reply-To: <37BF4C99.67814B7@softweyr.com>; from Wes Peters on Sat, Aug 21, 1999 at 07:04:25PM -0600 References: <199908210906.CAA17706@salsa.gv.tsc.tdk.com> <37BF4C99.67814B7@softweyr.com>
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Wes Peters scribbled this message on Aug 21: > Now I've got to go figure out what *I've* screwed up. I fstat the file before > mapping it and pass S.st_size as the map length. Is there any reason why > mmap would return non-NULL but map less than the requested size? no, there is NO reason why it wouldn't map the entire 50meg file... I have used ffsrecov w/ a 1.8gig file where I fstat it and map the entire file w/o a problem... also, mmap doesn't return NULL, it returns MAP_FAILED... the code for ffsrecov might give you some hints to make sure you aren't doing anything wrong... -- John-Mark Gurney Voice: +1 541 684 8449 Cu Networking P.O. Box 5693, 97405 "The soul contains in itself the event that shall presently befall it. The event is only the actualizing of its thought." -- Ralph Waldo Emerson To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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