From patchwork Tue Mar 9 00:27:38 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Joelle van Dyne X-Patchwork-Id: 12123623 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=-16.8 required=3.0 tests=BAYES_00, 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 97D34C433DB for ; Tue, 9 Mar 2021 00:29:07 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 2AD9A6525B for ; Tue, 9 Mar 2021 00:29:07 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 2AD9A6525B Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=getutm.app Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:54272 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lJQFG-000233-5l for qemu-devel@archiver.kernel.org; Mon, 08 Mar 2021 19:29:06 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:50284) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lJQE2-0000Lp-2j; Mon, 08 Mar 2021 19:27:50 -0500 Received: from mail-pg1-f170.google.com ([209.85.215.170]:40820) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1lJQE0-0006LB-Az; Mon, 08 Mar 2021 19:27:49 -0500 Received: by mail-pg1-f170.google.com with SMTP id n9so6603915pgi.7; Mon, 08 Mar 2021 16:27:47 -0800 (PST) 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=9WWcwh06/gRzc2Cz5zgitfkX4d70VqHv9apQwwyvZEk=; b=GvpByPuIs4ZoI1MnQV9ht1bVLeJaZIFK21Y6qSZiahvf3kGaOpdnV6mcYC83dREsD5 fkCOmp9R1LCVONPAk8AFfpluvugOtwz5bGPQamrtQ2L57HTKPrOPBJC7jdYHgurSI+3w rxSgL1KTVqKYPMPpcqbWjEvDcSnhhYmHVtTZnylFVncbnpeJz9XFtSnE1CwG2StI7DdU zhQ1Gje55Y4cbLTYcjlb/QbWNKmXShb6NXn5hQoTDFxxvz6bqffh7VaAihJ1Z7jrOXvu 5lflEcYHcbOa7gziKOK5kwXkp+OJUKpGMdvdcRQiPMAztkWOzzeoXrtQMXYoBTwcwzdk fQ/Q== X-Gm-Message-State: AOAM532q4wWovNUEe2rc1d8AGsBIhb5C0PjKsBhFq29OHDfyR5ShToL2 Q6haeY4N8HiGgILS949CgNoQ0TF/CbU= X-Google-Smtp-Source: ABdhPJzdjLBMl0NMxoiVy/DUfyAh6Hy/FgAMSE+7oOrb/H9yQzQEnODSEIHNea8jsENjUzLDE3KAuA== X-Received: by 2002:a63:fb18:: with SMTP id o24mr22149586pgh.55.1615249666326; Mon, 08 Mar 2021 16:27:46 -0800 (PST) Received: from localhost.localdomain ([73.93.154.215]) by smtp.gmail.com with ESMTPSA id d2sm466764pjx.42.2021.03.08.16.27.45 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Mon, 08 Mar 2021 16:27:46 -0800 (PST) From: Joelle van Dyne To: qemu-devel@nongnu.org Subject: [PATCH v2 1/4] block: feature detection for host block support Date: Mon, 8 Mar 2021 16:27:38 -0800 Message-Id: <20210309002741.85057-2-j@getutm.app> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20210309002741.85057-1-j@getutm.app> References: <20210309002741.85057-1-j@getutm.app> MIME-Version: 1.0 Received-SPF: pass client-ip=209.85.215.170; envelope-from=osy86github@gmail.com; helo=mail-pg1-f170.google.com X-Spam_score_int: -13 X-Spam_score: -1.4 X-Spam_bar: - X-Spam_report: (-1.4 / 5.0 requ) BAYES_00=-1.9, FREEMAIL_FORGED_FROMDOMAIN=0.25, FREEMAIL_FROM=0.001, HEADER_FROM_DIFFERENT_DOMAINS=0.249, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Kevin Wolf , "open list:raw" , Markus Armbruster , Max Reitz , Joelle van Dyne Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On Darwin (iOS), there are no system level APIs for directly accessing host block devices. We detect this at configure time. Signed-off-by: Joelle van Dyne --- meson.build | 6 +++++- qapi/block-core.json | 10 +++++++--- block/file-posix.c | 33 ++++++++++++++++++++++----------- 3 files changed, 34 insertions(+), 15 deletions(-) diff --git a/meson.build b/meson.build index 81d760d6e8..0e53876f69 100644 --- a/meson.build +++ b/meson.build @@ -181,7 +181,7 @@ if targetos == 'windows' include_directories: include_directories('.')) elif targetos == 'darwin' coref = dependency('appleframeworks', modules: 'CoreFoundation') - iokit = dependency('appleframeworks', modules: 'IOKit') + iokit = dependency('appleframeworks', modules: 'IOKit', required: false) elif targetos == 'sunos' socket = [cc.find_library('socket'), cc.find_library('nsl'), @@ -1056,6 +1056,9 @@ if get_option('cfi') add_global_link_arguments(cfi_flags, native: false, language: ['c', 'cpp', 'objc']) endif +have_host_block_device = (targetos != 'darwin' or + cc.has_header('IOKit/storage/IOMedia.h')) + ################# # config-host.h # ################# @@ -1149,6 +1152,7 @@ config_host_data.set('HAVE_PTY_H', cc.has_header('pty.h')) config_host_data.set('HAVE_SYS_IOCCOM_H', cc.has_header('sys/ioccom.h')) config_host_data.set('HAVE_SYS_KCOV_H', cc.has_header('sys/kcov.h')) config_host_data.set('HAVE_SYSTEM_FUNCTION', cc.has_function('system', prefix: '#include ')) +config_host_data.set('HAVE_HOST_BLOCK_DEVICE', have_host_block_device) config_host_data.set('CONFIG_PREADV', cc.has_function('preadv', prefix: '#include ')) diff --git a/qapi/block-core.json b/qapi/block-core.json index 9f555d5c1d..0c2cd9e689 100644 --- a/qapi/block-core.json +++ b/qapi/block-core.json @@ -959,7 +959,8 @@ 'discriminator': 'driver', 'data': { 'file': 'BlockStatsSpecificFile', - 'host_device': 'BlockStatsSpecificFile', + 'host_device': { 'type': 'BlockStatsSpecificFile', + 'if': 'defined(HAVE_HOST_BLOCK_DEVICE)' }, 'nvme': 'BlockStatsSpecificNvme' } } ## @@ -2863,7 +2864,9 @@ { 'enum': 'BlockdevDriver', 'data': [ 'blkdebug', 'blklogwrites', 'blkreplay', 'blkverify', 'bochs', 'cloop', 'compress', 'copy-on-read', 'dmg', 'file', 'ftp', 'ftps', - 'gluster', 'host_cdrom', 'host_device', 'http', 'https', 'iscsi', + 'gluster', 'host_cdrom', + {'name': 'host_device', 'if': 'defined(HAVE_HOST_BLOCK_DEVICE)' }, + 'http', 'https', 'iscsi', 'luks', 'nbd', 'nfs', 'null-aio', 'null-co', 'nvme', 'parallels', 'preallocate', 'qcow', 'qcow2', 'qed', 'quorum', 'raw', 'rbd', { 'name': 'replication', 'if': 'defined(CONFIG_REPLICATION)' }, @@ -4066,7 +4069,8 @@ 'ftps': 'BlockdevOptionsCurlFtps', 'gluster': 'BlockdevOptionsGluster', 'host_cdrom': 'BlockdevOptionsFile', - 'host_device':'BlockdevOptionsFile', + 'host_device': { 'type': 'BlockdevOptionsFile', + 'if': 'defined(HAVE_HOST_BLOCK_DEVICE)' }, 'http': 'BlockdevOptionsCurlHttp', 'https': 'BlockdevOptionsCurlHttps', 'iscsi': 'BlockdevOptionsIscsi', diff --git a/block/file-posix.c b/block/file-posix.c index 05079b40ca..d1ab3180ff 100644 --- a/block/file-posix.c +++ b/block/file-posix.c @@ -42,6 +42,8 @@ #include "scsi/constants.h" #if defined(__APPLE__) && (__MACH__) +#include +#if defined(HAVE_HOST_BLOCK_DEVICE) #include #include #include @@ -52,6 +54,7 @@ //#include #include #include +#endif /* defined(HAVE_HOST_BLOCK_DEVICE) */ #endif #ifdef __sun__ @@ -181,7 +184,17 @@ typedef struct BDRVRawReopenState { bool check_cache_dropped; } BDRVRawReopenState; -static int fd_open(BlockDriverState *bs); +static int fd_open(BlockDriverState *bs) +{ + BDRVRawState *s = bs->opaque; + + /* this is just to ensure s->fd is sane (its called by io ops) */ + if (s->fd >= 0) { + return 0; + } + return -EIO; +} + static int64_t raw_getlength(BlockDriverState *bs); typedef struct RawPosixAIOData { @@ -3032,6 +3045,7 @@ static BlockStatsSpecific *raw_get_specific_stats(BlockDriverState *bs) return stats; } +#if defined(HAVE_HOST_BLOCK_DEVICE) static BlockStatsSpecific *hdev_get_specific_stats(BlockDriverState *bs) { BlockStatsSpecific *stats = g_new(BlockStatsSpecific, 1); @@ -3041,6 +3055,7 @@ static BlockStatsSpecific *hdev_get_specific_stats(BlockDriverState *bs) return stats; } +#endif /* HAVE_HOST_BLOCK_DEVICE */ static QemuOptsList raw_create_opts = { .name = "raw-create-opts", @@ -3265,6 +3280,8 @@ BlockDriver bdrv_file = { /***********************************************/ /* host device */ +#if defined(HAVE_HOST_BLOCK_DEVICE) + #if defined(__APPLE__) && defined(__MACH__) static kern_return_t GetBSDPath(io_iterator_t mediaIterator, char *bsdPath, CFIndex maxPathSize, int flags); @@ -3557,16 +3574,6 @@ hdev_co_ioctl(BlockDriverState *bs, unsigned long int req, void *buf) } #endif /* linux */ -static int fd_open(BlockDriverState *bs) -{ - BDRVRawState *s = bs->opaque; - - /* this is just to ensure s->fd is sane (its called by io ops) */ - if (s->fd >= 0) - return 0; - return -EIO; -} - static coroutine_fn int hdev_co_pdiscard(BlockDriverState *bs, int64_t offset, int bytes) { @@ -3890,6 +3897,8 @@ static BlockDriver bdrv_host_cdrom = { }; #endif /* __FreeBSD__ */ +#endif /* HAVE_HOST_BLOCK_DEVICE */ + static void bdrv_file_init(void) { /* @@ -3897,6 +3906,7 @@ static void bdrv_file_init(void) * registered last will get probed first. */ bdrv_register(&bdrv_file); +#if defined(HAVE_HOST_BLOCK_DEVICE) bdrv_register(&bdrv_host_device); #ifdef __linux__ bdrv_register(&bdrv_host_cdrom); @@ -3904,6 +3914,7 @@ static void bdrv_file_init(void) #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) bdrv_register(&bdrv_host_cdrom); #endif +#endif /* HAVE_HOST_BLOCK_DEVICE */ } block_init(bdrv_file_init);