From nobody Wed Aug 26 21:58:12 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 4hVdnK10y6z6pp25 for ; Wed, 26 Aug 2026 21:58:13 +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 "YR2" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 4hVdnK00Ssz3qxZ for ; Wed, 26 Aug 2026 21:58:13 +0000 (UTC) (envelope-from git@FreeBSD.org) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1787781493; 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=E95FkpnZTxtuRRGsLUKV8KxbtCr52dQYBPTWrt/PI0s=; b=IALjjSgnij+i424eJ+cfphOXcQrjtJC/Zfoip2GIReiQ0U8CCRGwY7y/ca/b7fy8VYGXXA 4bDQ3ePuCWIisssxRK34ZQPJYMXJ4Pv5qWSn8c+7XsQ+K738WL1aPOHvztJitr28XU53Wk JPSGitXi1LsIHeyAfU4EDd0qP9PHeawPNN+n19k7x1mGn76HbY7l1ttqZP4GR9QUCBUkYR 1tbgkCSUBzTBI3Ak2ceIowwvWWRH58THIuND0ZWeUvOewDIFrgONnpXU9YtmX5ozSluVOq tJ2oZ3lC5wQKIZQ35mShZtvZ/J60+xb/yVPI76UqL+vy1+LM5r99khPqfSiOUQ== ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1787781493; a=rsa-sha256; cv=none; b=jAN9C9UO9+QmFW3Ni3VfYclbGK2EwR/+U9wiIdR3kQRBqHrONQapXZ1sw0oPUwxCOZYeGi 6HlUPLbhmtGCisc4PweJlgYtetED18467JeBDTkwQjVQSWF64BnpQ6CAyrbohEtaPjGL4F 7SBwPZkMLwN7sXY+nFuWbKkmUtHq1nVEyephYWNwALqpl/4a8K2Xk7BVrYp3V+F94OZZCf 75TAZfTU4ksv1ESEhTWVtXmKROPrxRIopHVJmEGt3lOwRtnn4VZJS++JD1aodlbjxtBw8T 6rB6iywYZb/aKYHRh+T+SYU49KRFudWER7CMH66swEguKgOJXsWkjQ1CGcWI5Q== 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=1787781493; 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=E95FkpnZTxtuRRGsLUKV8KxbtCr52dQYBPTWrt/PI0s=; b=gG83SzRL71ai9XY+h9p4b7nLx5ON5HO0be9h0U+sEdHJB/S6KVm5r2yqRNAr18d0QWl7Rp XEdRdd+SAAiWoR8aVkp9jhbiNSg/uOcfx9+CWzn+hU/kd9nr0Yt6I78AWzf9o1eqSXVWM4 6oI0YEp04+8RcRxCUf7XTYQ8SV7NM8Ji362PAdHSkvjWd/MSZTHrP5/TqNk/RncV6ZV4oJ lXjeW8hzp+RayCTQyfx8uFz3x750puII33dHxCkxlSwflqv98KTnZaVoWmkiBx1+8yc66F 3OJO2ciuA+TeelNO5XS6LUL5oDz1ErVtVsranRda7OgAUS+mV24uqLkdmegxgA== Received: from gitrepo.freebsd.org (gitrepo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:5]) by mxrelay.nyi.freebsd.org (Postfix) with ESMTP id 4hVdnJ5r8WzwSC for ; Wed, 26 Aug 2026 21:58:12 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from git (uid 1279) (envelope-from git@FreeBSD.org) id 3224d by gitrepo.freebsd.org (DragonFly Mail Agent v0.13+ on gitrepo.freebsd.org); Wed, 26 Aug 2026 21:58:12 +0000 To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org From: Rick Macklem Subject: git: 290e563166b4 - main - chflags: Add a new UF_NOCACHE 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: 290e563166b453413e1bf976b0819c301d559cad Auto-Submitted: auto-generated Date: Wed, 26 Aug 2026 21:58:12 +0000 Message-Id: <6a8f6174.3224d.77e39a8c@gitrepo.freebsd.org> The branch main has been updated by rmacklem: URL: https://cgit.FreeBSD.org/src/commit/?id=290e563166b453413e1bf976b0819c301d559cad commit 290e563166b453413e1bf976b0819c301d559cad Author: Rick Macklem AuthorDate: 2026-08-26 21:55:20 +0000 Commit: Rick Macklem CommitDate: 2026-08-26 21:55:20 +0000 chflags: Add a new UF_NOCACHE 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_NOCACHE to implement this. Patches for NFS and ZFS will be done separately. This is a redo of the patch, with a requested name change and a #ifdef in strtofflags.c so that it doesn't break some Linux cross build. The name change was requested by fuz@. Reviewed by: kib (earlier version) MFC after: 2 weeks Differential Revision: https://reviews.freebsd.org/D58181 --- lib/libc/gen/strtofflags.c | 6 ++++++ sys/fs/tmpfs/tmpfs_subr.c | 2 +- sys/sys/stat.h | 1 + sys/ufs/ufs/ufs_vnops.c | 2 +- 4 files changed, 9 insertions(+), 2 deletions(-) diff --git a/lib/libc/gen/strtofflags.c b/lib/libc/gen/strtofflags.c index 73b4db54ccdd..4c8d5c4030b6 100644 --- a/lib/libc/gen/strtofflags.c +++ b/lib/libc/gen/strtofflags.c @@ -80,7 +80,13 @@ static struct { { "nosparse", 0, UF_SPARSE }, { "nousparse", 0, UF_SPARSE }, { "nosystem", 0, UF_SYSTEM }, + /* Needed for some Linux cross-build that uses a stale stat.h. */ +#ifdef UF_NOCACHE + { "nousystem", 0, UF_SYSTEM }, + { "noucache", 1, UF_NOCACHE } +#else { "nousystem", 0, UF_SYSTEM } +#endif }; #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..113a985c0b30 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_NOCACHE)) != 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..ccea0760c8e4 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_NOCACHE 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..3c79c8814085 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_NOCACHE)) != 0) return (EOPNOTSUPP); if (vp->v_mount->mnt_flag & MNT_RDONLY) return (EROFS);