From nobody Sun Jul 12 22:47:02 2026 X-Original-To: dev-commits-src-main@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 4gz10R0wf6z6l72p for ; Sun, 12 Jul 2026 22:47:03 +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 "YR1" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 4gz10Q54PCz4Dl7 for ; Sun, 12 Jul 2026 22:47:02 +0000 (UTC) (envelope-from git@FreeBSD.org) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1783896422; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=fe33cMbYjwOKKs/WnLd4MHaigGeUAaDBB/DHGWqUZQQ=; b=IwIv5cVm8jGr6x9RLq6PE14X4fBFM+CJqTzdinCJd/urKGkzVlsn4BBYIg7oQtK0R2anpP cOWkXdb2/CyuCDrc3n4XbCBJ84r07MiQVrFkwyRV3f988EP5QmRtBYkONu+DadNRNEDbkh bccymo0/HjA3CqhS7ZirlZpzWcRooend3AfU6es3ZzcZZUt230UDHpXYwCc30ZhEG6/YUn X0x41TN2lCgsKORf9LpW82Cye57tw5BkEtYYax9fDAxK4gO7w3Z1bUNhptSuk477vzfIn+ elZkC9J9ap36LO4fDY9aVeZrN5EyHZBKdLl5UzqVgSjPnIwL547a8S8X1R9mBA== ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1783896422; a=rsa-sha256; cv=none; b=pbC39pYtNwfngYO9L614REze2YQ6wD/STsXOHOsQ4Zzhajylz94lvK9YnglATF6NrfEUxJ 3esn/i4TbZ7IG83Z3AG8+XpMwJ7MJaFalgiWHkd8PkygTRZcTGqzLyBxa+5SSc2TQiIDtV pAUDHFUeJ0tyfGg3QlO1b7x69EhXXuP6OBwQLEY8/5jLRqQkguJTbn2xL1sJu/BuqJJg9M M9BBDErCpuUezqqHtVYgieSjRjpGOF2Hv0e9EwfPYdyQ0bqj82tpjxSNozrQtsspGcuXLL z63IbsFH2JY5Blx/zaB55IW8QKKquqibXHNt0jfE7/BcAnp1L4COh95KhneYPA== ARC-Authentication-Results: i=1; mx1.freebsd.org; none ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1783896422; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=fe33cMbYjwOKKs/WnLd4MHaigGeUAaDBB/DHGWqUZQQ=; b=K9y4pLQPoPDRr1UvDADwB1dQT2i/m35mayPHX2JyIDcQwyfzj/Ojnihorsu/z+uVNXcYIo mwoTuJrWE6Vy3pQJ1JjU8JeC0xopgKAbB/zigsrhxA1sqWZPvRYyJ3HpOCLXbo5f48TRL8 ecnn/XJmZnTdpC5Bi300j9dsyVvK0kemh7dWFPyzJA7rLRxB2/W+qYtVpptVzsx1Rth2Jr 1O/hw7jMBSZtoYFkN2Eg+ed7dHei2mwmVzGuPp62fG4TEMzxNersxEzyEQdu3xNlR/SQPi 2Ota5Znod92gs4xrCq6rsvc3WA2DvJoFxZVxfBYam80we/tW9yQ1ZNTLIiEMlg== Received: from gitrepo.freebsd.org (gitrepo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:5]) by mxrelay.nyi.freebsd.org (Postfix) with ESMTP id 4gz10Q3SHbzY4S for ; Sun, 12 Jul 2026 22:47:02 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from git (uid 1279) (envelope-from git@FreeBSD.org) id 431dc by gitrepo.freebsd.org (DragonFly Mail Agent v0.13+ on gitrepo.freebsd.org); Sun, 12 Jul 2026 22:47:02 +0000 To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org From: Rick Macklem Subject: git: 74654ba3b1b3 - main - chflags: Add a new UF_DONTCACHE flag List-Id: Commit messages for the main branch of the src repository List-Archive: https://lists.freebsd.org/archives/dev-commits-src-main List-Help: List-Post: List-Subscribe: List-Unsubscribe: X-BeenThere: dev-commits-src-main@freebsd.org Sender: owner-dev-commits-src-main@FreeBSD.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list 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/main X-Git-Reftype: branch X-Git-Commit: 74654ba3b1b3bcf6ba8870a54310accbb6adbf0b Auto-Submitted: auto-generated Date: Sun, 12 Jul 2026 22:47:02 +0000 Message-Id: <6a541966.431dc.60b8c30b@gitrepo.freebsd.org> The branch main has been updated by rmacklem: URL: https://cgit.FreeBSD.org/src/commit/?id=74654ba3b1b3bcf6ba8870a54310accbb6adbf0b commit 74654ba3b1b3bcf6ba8870a54310accbb6adbf0b Author: Rick Macklem AuthorDate: 2026-07-12 22:45:28 +0000 Commit: Rick Macklem CommitDate: 2026-07-12 22:45:28 +0000 chflags: Add a new UF_DONTCACHE flag This internet draft (which is close to being an RFC) specifies a new NFSv4.2 attribute which tells the NFSv4.2 client to not cache file data. (Similar to O_DIRECT, but triggered by this attribute set on the file on the NFSv4.2 server and not by the application's open(2).) https://datatracker.ietf.org/doc/draft-ietf-nfsv4-uncacheable-files/ This patch adds a new chflags(1) flag called UF_DONTCACHE to implement this. Patches for NFS and ZFS will be done separately. Reviewed by: kib MFC after: 2 weeks Differential Revision: https://reviews.freebsd.org/D58181 --- lib/libc/gen/strtofflags.c | 4 +++- sys/fs/tmpfs/tmpfs_subr.c | 2 +- sys/sys/stat.h | 1 + sys/ufs/ufs/ufs_vnops.c | 2 +- 4 files changed, 6 insertions(+), 3 deletions(-) diff --git a/lib/libc/gen/strtofflags.c b/lib/libc/gen/strtofflags.c index 73b4db54ccdd..ca12401c37e5 100644 --- a/lib/libc/gen/strtofflags.c +++ b/lib/libc/gen/strtofflags.c @@ -80,7 +80,9 @@ static struct { { "nosparse", 0, UF_SPARSE }, { "nousparse", 0, UF_SPARSE }, { "nosystem", 0, UF_SYSTEM }, - { "nousystem", 0, UF_SYSTEM } + { "nousystem", 0, UF_SYSTEM }, + { "nodontcache", 0, UF_DONTCACHE }, + { "noudontcache", 0, UF_DONTCACHE } }; #define nmappings (sizeof(mapping) / sizeof(mapping[0])) diff --git a/sys/fs/tmpfs/tmpfs_subr.c b/sys/fs/tmpfs/tmpfs_subr.c index dd281d18d87d..c9a9a3114fb3 100644 --- a/sys/fs/tmpfs/tmpfs_subr.c +++ b/sys/fs/tmpfs/tmpfs_subr.c @@ -2042,7 +2042,7 @@ tmpfs_chflags(struct vnode *vp, u_long flags, struct ucred *cred, if ((flags & ~(SF_APPEND | SF_ARCHIVED | SF_IMMUTABLE | SF_NOUNLINK | UF_APPEND | UF_ARCHIVE | UF_HIDDEN | UF_IMMUTABLE | UF_NODUMP | UF_NOUNLINK | UF_OFFLINE | UF_OPAQUE | UF_READONLY | UF_REPARSE | - UF_SPARSE | UF_SYSTEM)) != 0) + UF_SPARSE | UF_SYSTEM | UF_DONTCACHE)) != 0) return (EOPNOTSUPP); /* Disallow this operation if the file system is mounted read-only. */ diff --git a/sys/sys/stat.h b/sys/sys/stat.h index 0c58838094ed..457ec99365d2 100644 --- a/sys/sys/stat.h +++ b/sys/sys/stat.h @@ -327,6 +327,7 @@ struct nstat { #define UF_REPARSE 0x00000400 /* Windows reparse point file bit */ #define UF_ARCHIVE 0x00000800 /* file needs to be archived */ #define UF_READONLY 0x00001000 /* Windows readonly file bit */ +#define UF_DONTCACHE 0x00002000 /* don't cache file data (NFSv4) */ /* This is the same as the MacOS X definition of UF_HIDDEN. */ #define UF_HIDDEN 0x00008000 /* file is hidden */ diff --git a/sys/ufs/ufs/ufs_vnops.c b/sys/ufs/ufs/ufs_vnops.c index 1d04e1b2785f..762b5bb5b5ec 100644 --- a/sys/ufs/ufs/ufs_vnops.c +++ b/sys/ufs/ufs/ufs_vnops.c @@ -667,7 +667,7 @@ ufs_setattr( SF_NOUNLINK | SF_SNAPSHOT | UF_APPEND | UF_ARCHIVE | UF_HIDDEN | UF_IMMUTABLE | UF_NODUMP | UF_NOUNLINK | UF_OFFLINE | UF_OPAQUE | UF_READONLY | UF_REPARSE | - UF_SPARSE | UF_SYSTEM)) != 0) + UF_SPARSE | UF_SYSTEM | UF_DONTCACHE)) != 0) return (EOPNOTSUPP); if (vp->v_mount->mnt_flag & MNT_RDONLY) return (EROFS);