From mboxrd@z Thu Jan 1 00:00:00 1970 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=-15.8 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=ham 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 774BFC47082 for ; Thu, 3 Jun 2021 05:19:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 59229613EE for ; Thu, 3 Jun 2021 05:19:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229623AbhFCFUu (ORCPT ); Thu, 3 Jun 2021 01:20:50 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36254 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229617AbhFCFUt (ORCPT ); Thu, 3 Jun 2021 01:20:49 -0400 Received: from mail-ej1-x62e.google.com (mail-ej1-x62e.google.com [IPv6:2a00:1450:4864:20::62e]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C9C41C06175F; Wed, 2 Jun 2021 22:18:58 -0700 (PDT) Received: by mail-ej1-x62e.google.com with SMTP id l1so7302432ejb.6; Wed, 02 Jun 2021 22:18:58 -0700 (PDT) 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=WqosZyHugw2yjt+Q+BMFX3mViYVJ9n0QC9Nc//NKvHo=; b=Ljl8d2GCRZEYzx1kK63gw6VSQJAbx2+dkwYrLHM3Z017+aNDNDCdp2uq5DLemx2atd nWQ3ShTsw+Zf9vhxTD32Dkx2/95wKlhk8vTxtHsEkjQs/U4Xh47RDbHa7Usgs12XUa2/ E6TaH2xJ4vjPGgCe31PeustIJxyCHwf7CSqZB3wJwio+HuMU3FiyBR/5j4hXQOBydLoc vZyqX2mbQH1Em9AqZUaVPtQn2YNjQKyDOA7+c4hhmADa/st5+5gm7JFByazhff72ch5m gg24pKEVbASYW2eywo4+4ZemLxIN0COZBDGhKdP7bZB41UH/T5buSD+AcqD91miCz0Gx utZA== 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=WqosZyHugw2yjt+Q+BMFX3mViYVJ9n0QC9Nc//NKvHo=; b=oLMeuAtiUP3d3Op5q05f4X8V0iC0hsZgvadnIulfBfLm/0xIHdzv87F/EX6EqYkgE0 txcUKytyZdG5bLPJ1Z60THgbqeSLD5LJkuIUqh1i7p+h5TlBT6NZYvp8iDh7mo89G4ls Q1zMJF/LxkxqOoXO6SUsOK2tVa83oWGFF63Y8ixXHRzANrMh1qy9IhdgkyfCbFBFEvaY f4aj+vDoXMoMcYxSFRoy41qN8pWxomvxi2qNA6YpCSd6eUz3h1xaoV0DMzr1rCSLF2fe /7QQzeSZh2eVkrlc367QtoCRihcxlh2hrxg1OU9NS7tNbkPIPmofNFatqr2M8pkKL1du 8NtQ== X-Gm-Message-State: AOAM530w82hLkT0s4ejlVVP297VuZIORjOnJGHPPONnt0k+HuejhRv9q o8dMn83OT3v5I2DQJUQUpvlI6gpoe/AuRw== X-Google-Smtp-Source: ABdhPJyfR2OyoKaUczcQ+iSunDexWVJ5ma5+lHK8LnR1Lo9U0MlmeZDfThHNSzahFREr2IQyOXhnqA== X-Received: by 2002:a17:906:d150:: with SMTP id br16mr16255211ejb.190.1622697537440; Wed, 02 Jun 2021 22:18:57 -0700 (PDT) Received: from carbon.v ([108.61.166.58]) by smtp.googlemail.com with ESMTPSA id f7sm963668ejz.95.2021.06.02.22.18.56 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 02 Jun 2021 22:18:57 -0700 (PDT) From: Dmitry Kadashev To: Jens Axboe , Alexander Viro , Christian Brauner Cc: Pavel Begunkov , linux-fsdevel@vger.kernel.org, io-uring@vger.kernel.org, Dmitry Kadashev Subject: [PATCH v5 02/10] io_uring: add support for IORING_OP_MKDIRAT Date: Thu, 3 Jun 2021 12:18:28 +0700 Message-Id: <20210603051836.2614535-3-dkadashev@gmail.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210603051836.2614535-1-dkadashev@gmail.com> References: <20210603051836.2614535-1-dkadashev@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: io-uring@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 | 55 +++++++++++++++++++++++++++++++++++ include/uapi/linux/io_uring.h | 1 + 2 files changed, 56 insertions(+) diff --git a/fs/io_uring.c b/fs/io_uring.c index a1ca6badff36..8ab4eb559520 100644 --- a/fs/io_uring.c +++ b/fs/io_uring.c @@ -665,6 +665,13 @@ 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; @@ -809,6 +816,7 @@ 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; }; @@ -1021,6 +1029,7 @@ static const struct io_op_def io_op_defs[] = { }, [IORING_OP_RENAMEAT] = {}, [IORING_OP_UNLINKAT] = {}, + [IORING_OP_MKDIRAT] = {}, }; static bool io_disarm_next(struct io_kiocb *req); @@ -3530,6 +3539,44 @@ static int io_unlinkat(struct io_kiocb *req, unsigned int issue_flags) 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, int issue_flags) +{ + struct io_mkdir *mkd = &req->mkdir; + int ret; + + if (issue_flags & IO_URING_F_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) { @@ -5936,6 +5983,8 @@ 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", @@ -6077,6 +6126,9 @@ 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; } @@ -6203,6 +6255,9 @@ static int io_issue_sqe(struct io_kiocb *req, unsigned int issue_flags) case IORING_OP_UNLINKAT: ret = io_unlinkat(req, issue_flags); break; + case IORING_OP_MKDIRAT: + ret = io_mkdirat(req, issue_flags); + break; default: ret = -EINVAL; break; diff --git a/include/uapi/linux/io_uring.h b/include/uapi/linux/io_uring.h index e1ae46683301..bf9d720d371f 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, -- 2.30.2