From nobody Sat Nov 20 22:56:14 2021 X-Original-To: dev-commits-src-all@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 5D81F18A3CCA; Sat, 20 Nov 2021 22:56:14 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "R3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4HxTRL2848z3kxj; Sat, 20 Nov 2021 22:56:14 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from gitrepo.freebsd.org (gitrepo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:5]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 259802459A; Sat, 20 Nov 2021 22:56:14 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from gitrepo.freebsd.org ([127.0.1.44]) by gitrepo.freebsd.org (8.16.1/8.16.1) with ESMTP id 1AKMuED9024547; Sat, 20 Nov 2021 22:56:14 GMT (envelope-from git@gitrepo.freebsd.org) Received: (from git@localhost) by gitrepo.freebsd.org (8.16.1/8.16.1/Submit) id 1AKMuEAi024546; Sat, 20 Nov 2021 22:56:14 GMT (envelope-from git) Date: Sat, 20 Nov 2021 22:56:14 GMT Message-Id: <202111202256.1AKMuEAi024546@gitrepo.freebsd.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org From: Rick Macklem Subject: git: 53cff1d4ddb9 - stable/12 - nfsd: Fix f_bavail and f_ffree for NFSv4 when negative List-Id: Commit messages for all branches of the src repository List-Archive: https://lists.freebsd.org/archives/dev-commits-src-all List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-dev-commits-src-all@freebsd.org X-BeenThere: dev-commits-src-all@freebsd.org MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Git-Committer: rmacklem X-Git-Repository: src X-Git-Refname: refs/heads/stable/12 X-Git-Reftype: branch X-Git-Commit: 53cff1d4ddb9f46d9c68eb3ec1f81717f7a8767c Auto-Submitted: auto-generated X-ThisMailContainsUnwantedMimeParts: N The branch stable/12 has been updated by rmacklem: URL: https://cgit.FreeBSD.org/src/commit/?id=53cff1d4ddb9f46d9c68eb3ec1f81717f7a8767c commit 53cff1d4ddb9f46d9c68eb3ec1f81717f7a8767c Author: Rick Macklem AuthorDate: 2021-11-08 20:59:31 +0000 Commit: Rick Macklem CommitDate: 2021-11-20 21:49:57 +0000 nfsd: Fix f_bavail and f_ffree for NFSv4 when negative Since the NFS Space_available and Files_available are unsigned, the NFSv3 server sets them to 0 when negative, so that they do not appear to be large positive values for non-FreeBSD clients. This patch fixes the NFSv4 server to do the same. Found during a recent IEFT NFSv4 working group testing event. (cherry picked from commit d70ca5b00eede3367ce659a03b2f9cc9729cd0dd) --- sys/fs/nfs/nfs_commonsubs.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/sys/fs/nfs/nfs_commonsubs.c b/sys/fs/nfs/nfs_commonsubs.c index 390d6e91535f..e4120d4d9e78 100644 --- a/sys/fs/nfs/nfs_commonsubs.c +++ b/sys/fs/nfs/nfs_commonsubs.c @@ -2482,6 +2482,17 @@ nfsv4_fillattr(struct nfsrv_descript *nd, struct mount *mp, vnode_t vp, } NFSCLRSTATFS_ATTRBIT(retbitp); } + /* + * Since NFS handles these values as unsigned on the + * wire, there is no way to represent negative values, + * so set them to 0. Without this, they will appear + * to be very large positive values for clients like + * Solaris10. + */ + if (fs->f_bavail < 0) + fs->f_bavail = 0; + if (fs->f_ffree < 0) + fs->f_ffree = 0; } #endif