Date: Wed, 23 Sep 2009 13:49:42 +0000 (UTC) From: Konstantin Belousov <kib@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-8@freebsd.org Subject: svn commit: r197431 - in stable/8/sys: . amd64/include/xen cddl/contrib/opensolaris contrib/dev/acpica contrib/pf dev/xen/xenpci vm Message-ID: <200909231349.n8NDng9i065368@svn.freebsd.org>
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Author: kib Date: Wed Sep 23 13:49:41 2009 New Revision: 197431 URL: http://svn.freebsd.org/changeset/base/197431 Log: MFC r197348: For a.out and pre-8 ELF binaries, allow the mmap of zero length. Approved by: re (kensmith) Modified: stable/8/sys/ (props changed) stable/8/sys/amd64/include/xen/ (props changed) stable/8/sys/cddl/contrib/opensolaris/ (props changed) stable/8/sys/contrib/dev/acpica/ (props changed) stable/8/sys/contrib/pf/ (props changed) stable/8/sys/dev/xen/xenpci/ (props changed) stable/8/sys/vm/vm_mmap.c Modified: stable/8/sys/vm/vm_mmap.c ============================================================================== --- stable/8/sys/vm/vm_mmap.c Wed Sep 23 12:33:32 2009 (r197430) +++ stable/8/sys/vm/vm_mmap.c Wed Sep 23 13:49:41 2009 (r197431) @@ -64,6 +64,7 @@ __FBSDID("$FreeBSD$"); #include <sys/mount.h> #include <sys/conf.h> #include <sys/stat.h> +#include <sys/sysent.h> #include <sys/vmmeter.h> #include <sys/sysctl.h> @@ -229,7 +230,8 @@ mmap(td, uap) fp = NULL; /* make sure mapping fits into numeric range etc */ - if (uap->len == 0 || + if ((uap->len == 0 && !SV_CURPROC_FLAG(SV_AOUT) && + curproc->p_osrel >= 800104) || ((flags & MAP_ANON) && uap->fd != -1)) return (EINVAL);
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