From patchwork Tue Feb 2 08:23:53 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dmitry Kadashev X-Patchwork-Id: 12061091 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-15.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7FD3FC433E6 for ; Tue, 2 Feb 2021 08:27:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3E4E364ED3 for ; Tue, 2 Feb 2021 08:27:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232388AbhBBI0v (ORCPT ); Tue, 2 Feb 2021 03:26:51 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33960 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232655AbhBBIZw (ORCPT ); Tue, 2 Feb 2021 03:25:52 -0500 Received: from mail-lf1-x133.google.com (mail-lf1-x133.google.com [IPv6:2a00:1450:4864:20::133]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9C0E0C061756; Tue, 2 Feb 2021 00:25:11 -0800 (PST) Received: by mail-lf1-x133.google.com with SMTP id e15so6536736lft.13; Tue, 02 Feb 2021 00:25:11 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=lUIoGP9jLQt3z5mlIPKkW70jR6dtNyFuNILhEt6IBME=; b=px+50jpSNabGYTenirBJjgo6ApX3mwYvM0Zxs1BxBlK9CCklgURyKo+wXTbpRMvg29 oC83En//fSqGNI4adq6GBS3bGnnm3erSVx3RC0SrOxKuoZRWnbF+lSAIN5C87Xhjefnp KbEYRLlKcQMvwMjxAsiSoC4yrVnTupp6X+DLN3NpVLGZLayDNHbXDG3VWc2EwiLI1rDY 1nIKaEmDqFweUjRm0U9rq6tLk1VL+KqRJBcywiNd5vf0gcMbJORHJ9CIeSH5/Qy7+Gv7 Er+FwdBj3DeOeJFHrhUEAL3ArLBGHfKL6HS8+vbCuptriE/bccJZoPpjP/+3VzhVrnbw D4Hw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=lUIoGP9jLQt3z5mlIPKkW70jR6dtNyFuNILhEt6IBME=; b=n4edmlEb7qSXkJevOFPrs91H4+kTtqDTCe3qdQmgnCTuKIOkS4hPj0hgDHcfbrOdOW p/B2A4yrCQBm4HShNbfvzJ6RYIOXOJ5HTB9Q5DiEiPz+V6x5HPhVMRmuh6Y70fD9UKx1 C+CyWfF+sY/xeAHKPGTNoaV4aoff3cnxUUmCyEPMA9lUeUdP25dCQG1q8gefXO1ICGQB H/Q44iHX4Cuug4gFsudfRIgNVVfkkDYrW9xel9W19kS2IFn5XNRlLnmMKczJPwp1wsRt hgSudbqeh7x7qCNtrqw44Appa30uCc72oYPy1qKzveUWfsYl2dqisAcRKil1fFH9+ZD6 gnTA== X-Gm-Message-State: AOAM531DnNUgX2OZAN5mBTwnNIjxeq3ddVeR23KueNQ7uWiFY48O+el6 R+W71LcqfFwhQvpGid2REVo= X-Google-Smtp-Source: ABdhPJzms4LUpbOZ+qN7ZAaMBArII0vwX54EWvj4jPGaa94C0/jOL4S5K47+bSoJKMoITNU3pai4aA== X-Received: by 2002:a05:6512:b18:: with SMTP id w24mr9807267lfu.131.1612254310172; Tue, 02 Feb 2021 00:25:10 -0800 (PST) Received: from carbon.v ([94.143.149.146]) by smtp.googlemail.com with ESMTPSA id t6sm4195857ljd.112.2021.02.02.00.25.08 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 02 Feb 2021 00:25:09 -0800 (PST) From: Dmitry Kadashev To: Jens Axboe , Alexander Viro Cc: Pavel Begunkov , linux-fsdevel@vger.kernel.org, io-uring@vger.kernel.org, Dmitry Kadashev Subject: [PATCH v2 2/2] io_uring: add support for IORING_OP_MKDIRAT Date: Tue, 2 Feb 2021 15:23:53 +0700 Message-Id: <20210202082353.2152271-3-dkadashev@gmail.com> X-Mailer: git-send-email 2.30.0 In-Reply-To: <20210202082353.2152271-1-dkadashev@gmail.com> References: <20210202082353.2152271-1-dkadashev@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org IORING_OP_MKDIRAT behaves like mkdirat(2) and takes the same flags and arguments. Signed-off-by: Dmitry Kadashev --- fs/io_uring.c | 58 +++++++++++++++++++++++++++++++++++ include/uapi/linux/io_uring.h | 1 + 2 files changed, 59 insertions(+) diff --git a/fs/io_uring.c b/fs/io_uring.c index 24ad36d71289..000d7dce5902 100644 --- a/fs/io_uring.c +++ b/fs/io_uring.c @@ -582,6 +582,13 @@ struct io_unlink { struct filename *filename; }; +struct io_mkdir { + struct file *file; + int dfd; + umode_t mode; + struct filename *filename; +}; + struct io_completion { struct file *file; struct list_head list; @@ -712,6 +719,7 @@ struct io_kiocb { struct io_shutdown shutdown; struct io_rename rename; struct io_unlink unlink; + struct io_mkdir mkdir; /* use only after cleaning per-op data, see io_clean_op() */ struct io_completion compl; }; @@ -996,6 +1004,10 @@ static const struct io_op_def io_op_defs[] = { .work_flags = IO_WQ_WORK_MM | IO_WQ_WORK_FILES | IO_WQ_WORK_FS | IO_WQ_WORK_BLKCG, }, + [IORING_OP_MKDIRAT] = { + .work_flags = IO_WQ_WORK_MM | IO_WQ_WORK_FILES | + IO_WQ_WORK_FS | IO_WQ_WORK_BLKCG, + }, }; enum io_mem_account { @@ -3805,6 +3817,44 @@ static int io_unlinkat(struct io_kiocb *req, bool force_nonblock) return 0; } +static int io_mkdirat_prep(struct io_kiocb *req, + const struct io_uring_sqe *sqe) +{ + struct io_mkdir *mkd = &req->mkdir; + const char __user *fname; + + if (unlikely(req->flags & REQ_F_FIXED_FILE)) + return -EBADF; + + mkd->dfd = READ_ONCE(sqe->fd); + mkd->mode = READ_ONCE(sqe->len); + + fname = u64_to_user_ptr(READ_ONCE(sqe->addr)); + mkd->filename = getname(fname); + if (IS_ERR(mkd->filename)) + return PTR_ERR(mkd->filename); + + req->flags |= REQ_F_NEED_CLEANUP; + return 0; +} + +static int io_mkdirat(struct io_kiocb *req, bool force_nonblock) +{ + struct io_mkdir *mkd = &req->mkdir; + int ret; + + if (force_nonblock) + return -EAGAIN; + + ret = do_mkdirat(mkd->dfd, mkd->filename, mkd->mode); + + req->flags &= ~REQ_F_NEED_CLEANUP; + if (ret < 0) + req_set_fail_links(req); + io_req_complete(req, ret); + return 0; +} + static int io_shutdown_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe) { @@ -6101,6 +6151,8 @@ static int io_req_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe) return io_renameat_prep(req, sqe); case IORING_OP_UNLINKAT: return io_unlinkat_prep(req, sqe); + case IORING_OP_MKDIRAT: + return io_mkdirat_prep(req, sqe); } printk_once(KERN_WARNING "io_uring: unhandled opcode %d\n", @@ -6228,6 +6280,9 @@ static void __io_clean_op(struct io_kiocb *req) case IORING_OP_UNLINKAT: putname(req->unlink.filename); break; + case IORING_OP_MKDIRAT: + putname(req->mkdir.filename); + break; } req->flags &= ~REQ_F_NEED_CLEANUP; } @@ -6340,6 +6395,9 @@ static int io_issue_sqe(struct io_kiocb *req, bool force_nonblock, case IORING_OP_UNLINKAT: ret = io_unlinkat(req, force_nonblock); break; + case IORING_OP_MKDIRAT: + ret = io_mkdirat(req, force_nonblock); + break; default: ret = -EINVAL; break; diff --git a/include/uapi/linux/io_uring.h b/include/uapi/linux/io_uring.h index ac4e1738a9af..890edd850a9e 100644 --- a/include/uapi/linux/io_uring.h +++ b/include/uapi/linux/io_uring.h @@ -137,6 +137,7 @@ enum { IORING_OP_SHUTDOWN, IORING_OP_RENAMEAT, IORING_OP_UNLINKAT, + IORING_OP_MKDIRAT, /* this goes last, obviously */ IORING_OP_LAST,