Date: Wed, 24 Jan 2001 10:57:03 -0800 From: Guy Harris <gharris@flashcom.net> To: Guy Harris <gharris@flashcom.net> Cc: Mike Smith <msmith@freebsd.org>, Matthias Andree <ma@dt.e-technik.uni-dortmund.de>, Linux NFS mailing list <nfs@lists.sourceforge.net>, FreeBSD Stable <freebsd-stable@freebsd.org> Subject: Re: [NFS] Incompatible: FreeBSD 4.2 client, Linux 2.2.18 nfsv3 server, read-only export Message-ID: <20010124105703.G344@quadrajet.flashcom.com> In-Reply-To: <20010124104216.F344@quadrajet.flashcom.com>; from gharris@flashcom.net on Wed, Jan 24, 2001 at 10:42:16AM -0800 References: <200101241104.f0OB4sS10071@mass.dis.org> <200101241117.f0OBH7S10154@mass.dis.org> <20010124104216.F344@quadrajet.flashcom.com>
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On Wed, Jan 24, 2001 at 10:42:16AM -0800, Guy Harris wrote:
> If you do want to work around the Linux bug, you'd probably have to send
> another ACCESS request over the wire, with the write bits turned off;
> I'm not sure whether that's worth the effort or not.
An alternative patch is
*** vfs.c.dist Sun Dec 10 16:49:44 2000
--- vfs.c Wed Jan 24 10:54:15 2001
***************
*** 448,454 ****
error = nfsd_permission(export, dentry, (map->how | NO_OWNER_OVERRIDE));
if (error == 0)
result |= map->access;
! else if ((error == nfserr_perm) || (error == nfserr_acces)) {
/*
* This access type is denyed; but the
* access query itself succeeds.
--- 448,455 ----
error = nfsd_permission(export, dentry, (map->how | NO_OWNER_OVERRIDE));
if (error == 0)
result |= map->access;
! else if ((error == nfserr_perm) || (error == nfserr_acces) ||
! (error == nfserr_rofs)) {
/*
* This access type is denyed; but the
* access query itself succeeds.
but you apply that one to the Linux NFS server code (in
"fs/nfsd/vfs.c"), which should fix the Linux server bug. (I haven't
tried it, or compiled it, as my machine is currently running FreeBSD,
but I think it should, at least compile, and I expect it to solve the
problem.)
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