From patchwork Sat Jan 23 04:56:22 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: 12041115 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,URIBL_BLOCKED,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 32ECDC433DB for ; Sat, 23 Jan 2021 04:58:02 +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 9B28223A84 for ; Sat, 23 Jan 2021 04:58:01 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 9B28223A84 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]:55960 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1l3Azo-00005A-GF for qemu-devel@archiver.kernel.org; Fri, 22 Jan 2021 23:58:00 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:40152) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1l3AyV-0006pN-UG; Fri, 22 Jan 2021 23:56:39 -0500 Received: from mail-pj1-f43.google.com ([209.85.216.43]:54561) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1l3AyU-0005nw-6z; Fri, 22 Jan 2021 23:56:39 -0500 Received: by mail-pj1-f43.google.com with SMTP id cq1so5068552pjb.4; Fri, 22 Jan 2021 20:56:37 -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=lr0g9cBtE48tU4EJmSiiQmz+iS86Z7gy8ZRT7zhMcpo=; b=pTsdKKUldjVNKuR4GUW/m07JlAXiSil0kDbjIkAFepkVTF0/gN7827gPvRxC8ZdTR0 592jX2dqz2hgoA+5+vFkkPuKVe7JWqecnn0Lzq3uf46Gsv+HJ4YCkXNNl+713TOQC5mF nEtor0T+W6qR84OdysZSE/rQ6JC5XKeQ5a3GEgzlTxAO8s2DHUEKH0pMX57U1a+muTHZ 21ziioA7hErdomZS261hxfVQS7ADTeEh+bMeM252DHsrS9hbAIwy91rj2RXFJmXLZSUn gtt/ph7Q1skVZObFzv5ybIFIhV9xArx5SsAvOic7u5qRg+8XrjGIpbNXAbm/HqKe9EMu bd0Q== X-Gm-Message-State: AOAM532u724QScvDGu6GEUs7VeIyyy7VBWj0tewYi8d7FaJbOchdLUwv Lp1ILj5X+T1k/NWnyEAO50hD2I1VJ8U= X-Google-Smtp-Source: ABdhPJykaqXVK26vUry1DtYqtUt9QwGWJXSE8nBsyomf01+7prSvL/ezE0Xmuwm4Pkshydy6RXZBxg== X-Received: by 2002:a17:90a:de06:: with SMTP id m6mr1555925pjv.167.1611377796442; Fri, 22 Jan 2021 20:56:36 -0800 (PST) Received: from localhost.localdomain ([73.93.154.229]) by smtp.gmail.com with ESMTPSA id c62sm9872772pfa.116.2021.01.22.20.56.35 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Fri, 22 Jan 2021 20:56:36 -0800 (PST) From: Joelle van Dyne To: qemu-devel@nongnu.org Subject: [PATCH v8 01/11] block: feature detection for host block support Date: Fri, 22 Jan 2021 20:56:22 -0800 Message-Id: <20210123045632.18482-2-j@getutm.app> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20210123045632.18482-1-j@getutm.app> References: <20210123045632.18482-1-j@getutm.app> MIME-Version: 1.0 Received-SPF: pass client-ip=209.85.216.43; envelope-from=osy86github@gmail.com; helo=mail-pj1-f43.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=0.249, 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 af2bc89741..27110075df 100644 --- a/meson.build +++ b/meson.build @@ -180,7 +180,7 @@ 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'), @@ -1023,6 +1023,9 @@ if get_option('cfi') add_project_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 # ################# @@ -1113,6 +1116,7 @@ config_host_data.set('HAVE_DRM_H', cc.has_header('libdrm/drm.h')) 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_HOST_BLOCK_DEVICE', have_host_block_device) ignored = ['CONFIG_QEMU_INTERP_PREFIX'] # actually per-target arrays = ['CONFIG_AUDIO_DRIVERS', 'CONFIG_BDRV_RW_WHITELIST', 'CONFIG_BDRV_RO_WHITELIST'] diff --git a/qapi/block-core.json b/qapi/block-core.json index 3484986d1c..1a9576de8d 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' } } ## @@ -2827,7 +2828,9 @@ { '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)' }, @@ -4012,7 +4015,8 @@ '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 00cdaaa2d4..11d2021346 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 { @@ -3014,6 +3027,7 @@ 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); @@ -3023,6 +3037,7 @@ static BlockStatsSpecific *hdev_get_specific_stats(BlockDriverState *bs) return stats; } +#endif /* HAVE_HOST_BLOCK_DEVICE */ static QemuOptsList raw_create_opts = { .name = "raw-create-opts", @@ -3247,6 +3262,8 @@ 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); @@ -3539,16 +3556,6 @@ 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) { @@ -3872,6 +3879,8 @@ static BlockDriver bdrv_host_cdrom = { }; #endif /* __FreeBSD__ */ +#endif /* HAVE_HOST_BLOCK_DEVICE */ + static void bdrv_file_init(void) { /* @@ -3879,6 +3888,7 @@ 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); @@ -3886,6 +3896,7 @@ 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);