Date: Fri, 02 Apr 2004 21:14:34 +0200 From: "Poul-Henning Kamp" <phk@phk.freebsd.dk> To: Alfred Perlstein <alfred@freebsd.org> Cc: current@freebsd.org Subject: Re: mmap breakage? Message-ID: <35917.1080933274@critter.freebsd.dk> In-Reply-To: Your message of "Fri, 02 Apr 2004 11:12:54 -0800." <20040402191254.GK26131@elvis.mu.org>
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In message <20040402191254.GK26131@elvis.mu.org>, Alfred Perlstein writes: >* Poul-Henning Kamp <phk@phk.freebsd.dk> [040402 10:40] wrote: >> In message <20040402160959.GJ26131@elvis.mu.org>, Alfred Perlstein writes: >> >I noticed that mplayer seems to want to open /dev/zero with RDONLY >> >but then tries to mmap it PROT_READ+PROT_WRITE and gets rejected. >> >> Sounds like missing MAP_PRIVATE ? > >Nope, private is set. It's just that the file is opened RDONLY, >but PROT has PROT_WRITE in it. That should be OK with MAP_PRIVATE as far as I interpret POLA. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 phk@FreeBSD.ORG | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence.
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