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Fri, 18 Oct 2024 15:28:24 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1729258110; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=VXTY/0zpasdLY6hA9Iyg2hWLpcN5UMawkzvJ1EtxmKY=; b=LrpENiTbD44SkPLjgBUDYfaeXsI5bNLHG1eGOKRx8X/A8FpL41soKaXLUqoQJaMD8mzKlp VzIvathIAo321au1rxXcV2l3raRbAV4KqWkVe9UasZeC5tVojvtIASBYuuhT+mRGuJ4WvI s5iq1D+cCJe1+FK36bTjdmEvol3oyjw= X-MC-Unique: hAYMZqpzMhKz4td2Vj4Iug-1 From: Markus Armbruster To: qemu-devel@nongnu.org Cc: peter.maydell@linaro.org, =?UTF-8?q?Daniel=20P=2E=20Berrang=C3=A9?= Subject: [PULL 4/9] block: Improve errors about block sizes Date: Fri, 18 Oct 2024 15:28:19 +0200 Message-ID: <20241018132824.3379780-5-armbru@redhat.com> In-Reply-To: <20241018132824.3379780-1-armbru@redhat.com> References: <20241018132824.3379780-1-armbru@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.0 on 10.30.177.17 Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=170.10.133.124; envelope-from=armbru@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.016, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @redhat.com) X-ZM-MESSAGEID: 1729258158396116600 Block sizes need to be a power of two between 512 and an arbitrary limit, currently 2MiB. Commit 5937835ac4c factored block size checking out of set_blocksize() into new check_block_size(), for reuse in block/export/. Its two error messages are okay for the original purpose: $ qemu-system-x86_64 -device ide-hd,physical_block_size=3D1 qemu-system-x86_64: -device ide-hd,physical_block_size=3D1: Property .p= hysical_block_size doesn't take value 1 (minimum: 512, maximum: 2097152) $ qemu-system-x86_64 -device ide-hd,physical_block_size=3D513 qemu-system-x86_64: -device ide-hd,physical_block_size=3D513: Property = .physical_block_size doesn't take value '513', it's not a power of 2 They're mildly off for block exports: $ qemu-storage-daemon --blockdev node-name=3Dnod0,driver=3Dfile,filenam= e=3Dfoo.img --export type=3Dvduse-blk,id=3Dexp0,node-name=3Dnod0,name=3Dfoo= ,logical-block-size=3D1 qemu-storage-daemon: --export type=3Dvduse-blk,id=3Dexp0,node-name=3Dno= d0,name=3Dfoo,logical-block-size=3D1: Property exp0.logical-block-size does= n't take value 1 (minimum: 512, maximum: 2097152) The error message talks about a property. CLI options like --export don't have properties, they have parameters. Replace the two error messages by a single one that's okay for both purposes. Looks like this: qemu-storage-daemon: --export type=3Dvduse-blk,id=3Dexp0,node-name=3Dno= d0,name=3Dfoo,logical-block-size=3D1: parameter logical-block-size must be = a power of 2 between 512 and 2097152 Signed-off-by: Markus Armbruster Message-ID: <20241010150144.986655-3-armbru@redhat.com> Reviewed-by: Daniel P. Berrang=C3=A9 --- util/block-helpers.c | 18 +++++++----------- 1 file changed, 7 insertions(+), 11 deletions(-) diff --git a/util/block-helpers.c b/util/block-helpers.c index c4851432f5..fb5de348e2 100644 --- a/util/block-helpers.c +++ b/util/block-helpers.c @@ -10,7 +10,6 @@ =20 #include "qemu/osdep.h" #include "qapi/error.h" -#include "qapi/qmp/qerror.h" #include "block-helpers.h" =20 /** @@ -28,19 +27,16 @@ void check_block_size(const char *id, const char *name, int64_t value, Error **errp) { - /* value of 0 means "unset" */ - if (value && (value < MIN_BLOCK_SIZE || value > MAX_BLOCK_SIZE)) { - error_setg(errp, QERR_PROPERTY_VALUE_OUT_OF_RANGE, - id, name, value, MIN_BLOCK_SIZE, MAX_BLOCK_SIZE); + if (!value) { + /* unset */ return; } =20 - /* We rely on power-of-2 blocksizes for bitmasks */ - if ((value & (value - 1)) !=3D 0) { + if (value < MIN_BLOCK_SIZE || value > MAX_BLOCK_SIZE + || (value & (value - 1))) { error_setg(errp, - "Property %s.%s doesn't take value '%" PRId64 - "', it's not a power of 2", - id, name, value); - return; + "parameter %s must be a power of 2 between %" PRId64 + " and %" PRId64, + name, MIN_BLOCK_SIZE, MAX_BLOCK_SIZE); } } --=20 2.46.0