From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id DEE9821A449; Wed, 29 Oct 2025 01:03:13 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761699794; cv=none; b=jt0Ohs9rqik0NQrqKgEBQKXVx3+RkH/LY908UPaPOuqerN0+mIavt6PF3ck7qc8RG/hYOjWFQFz1PKmdixwVo/MhQMi5yariD1733b5SUKDfI6cdQKC/ZJJ2myemie37MoCyz66BPKJ73cAonzdo7tMXguaONVDrLPhOfS0FIoQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761699794; c=relaxed/simple; bh=NV0W82ZhW5ITVLgoZkzM6axV/TdMmrfFCJ/ITmJG8Co=; h=Date:Subject:From:To:Cc:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=mtKh1fxrpfdhVMC3NOBAEkFAjY03bqbaqrs4jtSgPpv/q3atJqqroNIxVgU1xvwvntWPJkrNIlFGlZE0hhVzaC2zBarIrNOecICPpJVvJG08En+GN8jU57H6Emavk/UDDGEvL7u6NwLGXGj/Vt+eGKye7wrwQUUsQk4IsyTz+1I= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=aj03/NTV; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="aj03/NTV" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 74E90C4CEE7; Wed, 29 Oct 2025 01:03:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1761699793; bh=NV0W82ZhW5ITVLgoZkzM6axV/TdMmrfFCJ/ITmJG8Co=; h=Date:Subject:From:To:Cc:In-Reply-To:References:From; b=aj03/NTVshcMicPpb3HwtwYJzS7UwFhR209Lhk8rU8UGj62ycNxhj7StwiBCEDDLI el96jIxxlnfY0FA4FcqmQ0ugR8P3oDEcW5+beYleboI47ZCfpiHvyn+/3dcFuTBm9n Cde7X4nesR2APbkQq9dwei8nOuw6y1nK+IborFXkafnNw4mr+NOIqV34F38QpJj680 8Y7PZjED8S32ntJoiaaQCg7CFSCKOlOjnZW48Yas0rXBaB617pTkqXZWMGi9zkOCGV s7tF2qZ3hEDOlPQw5iZcZDCpCovB07//8mwFvh/LS17qApVwJHV66X4j3GERODGT5t 64IwkWCBKYjnA== Date: Tue, 28 Oct 2025 18:03:13 -0700 Subject: [PATCH 15/22] libfuse: add upper level iomap_config implementation From: "Darrick J. Wong" To: djwong@kernel.org, bschubert@ddn.com Cc: linux-ext4@vger.kernel.org, linux-fsdevel@vger.kernel.org, bernd@bsbernd.com, miklos@szeredi.hu, joannelkoong@gmail.com, neal@gompa.dev Message-ID: <176169813804.1427432.2905769026619791379.stgit@frogsfrogsfrogs> In-Reply-To: <176169813437.1427432.15345189583850708968.stgit@frogsfrogsfrogs> References: <176169813437.1427432.15345189583850708968.stgit@frogsfrogsfrogs> Precedence: bulk X-Mailing-List: linux-ext4@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit From: Darrick J. Wong Add FUSE_IOMAP_CONFIG helpers to the upper level fuse library. Signed-off-by: "Darrick J. Wong" --- include/fuse.h | 7 +++++++ lib/fuse.c | 37 +++++++++++++++++++++++++++++++++++++ 2 files changed, 44 insertions(+) diff --git a/include/fuse.h b/include/fuse.h index 4c4fff837437c8..74b86e8d27fb35 100644 --- a/include/fuse.h +++ b/include/fuse.h @@ -896,6 +896,13 @@ struct fuse_operations { */ int (*getattr_iflags) (const char *path, struct stat *buf, unsigned int *iflags, struct fuse_file_info *fi); + + /** + * Configure the filesystem geometry that will be used by iomap + * files. + */ + int (*iomap_config) (uint64_t supported_flags, off_t maxbytes, + struct fuse_iomap_config *cfg); }; /** Extra context that may be needed by some filesystems diff --git a/lib/fuse.c b/lib/fuse.c index 9337b1b66e2c49..1fec6371b7bc81 100644 --- a/lib/fuse.c +++ b/lib/fuse.c @@ -2942,6 +2942,23 @@ static int fuse_fs_iomap_ioend(struct fuse_fs *fs, const char *path, ioendflags, error, new_addr); } +static int fuse_fs_iomap_config(struct fuse_fs *fs, uint64_t flags, + uint64_t maxbytes, + struct fuse_iomap_config *cfg) +{ + fuse_get_context()->private_data = fs->user_data; + if (!fs->op.iomap_config) + return -ENOSYS; + + if (fs->debug) { + fuse_log(FUSE_LOG_DEBUG, + "iomap_config flags 0x%llx maxbytes %lld\n", + (unsigned long long)flags, (long long)maxbytes); + } + + return fs->op.iomap_config(flags, maxbytes, cfg); +} + static void fuse_lib_setattr(fuse_req_t req, fuse_ino_t ino, struct stat *attr, int valid, struct fuse_file_info *fi) { @@ -4796,6 +4813,25 @@ static void fuse_lib_iomap_ioend(fuse_req_t req, fuse_ino_t nodeid, reply_err(req, err); } +static void fuse_lib_iomap_config(fuse_req_t req, uint64_t flags, + uint64_t maxbytes) +{ + struct fuse_iomap_config cfg = { }; + struct fuse *f = req_fuse_prepare(req); + struct fuse_intr_data d; + int err; + + fuse_prepare_interrupt(f, req, &d); + err = fuse_fs_iomap_config(f->fs, flags, maxbytes, &cfg); + fuse_finish_interrupt(f, req, &d); + if (err) { + reply_err(req, err); + return; + } + + fuse_reply_iomap_config(req, &cfg); +} + static int clean_delay(struct fuse *f) { /* @@ -4900,6 +4936,7 @@ static struct fuse_lowlevel_ops fuse_path_ops = { .iomap_begin = fuse_lib_iomap_begin, .iomap_end = fuse_lib_iomap_end, .iomap_ioend = fuse_lib_iomap_ioend, + .iomap_config = fuse_lib_iomap_config, }; int fuse_notify_poll(struct fuse_pollhandle *ph)