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Tue, 11 Feb 2020 16:03:28 +0000 (UTC) From: Stefan Hajnoczi To: qemu-devel@nongnu.org Subject: [PATCH v3 2/4] luks: implement .bdrv_measure() Date: Tue, 11 Feb 2020 16:03:16 +0000 Message-Id: <20200211160318.453650-3-stefanha@redhat.com> In-Reply-To: <20200211160318.453650-1-stefanha@redhat.com> References: <20200211160318.453650-1-stefanha@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 X-MC-Unique: AOTLPrEFMMiup2qrGBxmXg-1 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: base64 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 207.211.31.120 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 , =?UTF-8?q?Daniel=20P=2E=20Berrang=C3=A9?= , Stefan Hajnoczi , qemu-block@nongnu.org, Max Reitz Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" QWRkIHFlbXUtaW1nIG1lYXN1cmUgc3VwcG9ydCBpbiB0aGUgImx1a3MiIGJsb2NrIGRyaXZlci4K ClNpZ25lZC1vZmYtYnk6IFN0ZWZhbiBIYWpub2N6aSA8c3RlZmFuaGFAcmVkaGF0LmNvbT4KLS0t CiBibG9jay9jcnlwdG8uYyB8IDYyICsrKysrKysrKysrKysrKysrKysrKysrKysrKysrKysrKysr KysrKysrKysrKysrKysrCiAxIGZpbGUgY2hhbmdlZCwgNjIgaW5zZXJ0aW9ucygrKQoKZGlmZiAt LWdpdCBhL2Jsb2NrL2NyeXB0by5jIGIvYmxvY2svY3J5cHRvLmMKaW5kZXggMjQ4MjM4MzVjMS4u NDUzMTE5ODc1ZSAxMDA2NDQKLS0tIGEvYmxvY2svY3J5cHRvLmMKKysrIGIvYmxvY2svY3J5cHRv LmMKQEAgLTQ4NCw2ICs0ODQsNjcgQEAgc3RhdGljIGludDY0X3QgYmxvY2tfY3J5cHRvX2dldGxl bmd0aChCbG9ja0RyaXZlclN0YXRlICpicykKIH0KIAogCitzdGF0aWMgQmxvY2tNZWFzdXJlSW5m byAqYmxvY2tfY3J5cHRvX21lYXN1cmUoUWVtdU9wdHMgKm9wdHMsCisgICAgICAgICAgICAgICAg ICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgQmxvY2tEcml2ZXJTdGF0ZSAqaW5fYnMsCisg ICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgRXJyb3IgKiplcnJw KQoreworICAgIGdfYXV0b3B0cihRQ3J5cHRvQmxvY2tDcmVhdGVPcHRpb25zKSBjcmVhdGVfb3B0 cyA9IE5VTEw7CisgICAgRXJyb3IgKmxvY2FsX2VyciA9IE5VTEw7CisgICAgQmxvY2tNZWFzdXJl SW5mbyAqaW5mbzsKKyAgICB1aW50NjRfdCBzaXplOworICAgIHNpemVfdCBsdWtzX3BheWxvYWRf c2l6ZTsKKyAgICBRRGljdCAqY3J5cHRvb3B0czsKKworICAgIC8qCisgICAgICogUHJlYWxsb2Nh dGlvbiBtb2RlIGRvZXNuJ3QgYWZmZWN0IHNpemUgcmVxdWlyZW1lbnRzIGJ1dCB3ZSBtdXN0IGNv bnN1bWUKKyAgICAgKiB0aGUgb3B0aW9uLgorICAgICAqLworICAgIGdfZnJlZShxZW11X29wdF9n ZXRfZGVsKG9wdHMsIEJMT0NLX09QVF9QUkVBTExPQykpOworCisgICAgc2l6ZSA9IHFlbXVfb3B0 X2dldF9zaXplX2RlbChvcHRzLCBCTE9DS19PUFRfU0laRSwgMCk7CisKKyAgICBpZiAoaW5fYnMp IHsKKyAgICAgICAgaW50NjRfdCBzc2l6ZSA9IGJkcnZfZ2V0bGVuZ3RoKGluX2JzKTsKKworICAg ICAgICBpZiAoc3NpemUgPCAwKSB7CisgICAgICAgICAgICBlcnJvcl9zZXRnX2Vycm5vKCZsb2Nh bF9lcnIsIC1zc2l6ZSwKKyAgICAgICAgICAgICAgICAgICAgICAgICAgICAgIlVuYWJsZSB0byBn ZXQgaW1hZ2UgdmlydHVhbF9zaXplIik7CisgICAgICAgICAgICBnb3RvIGVycjsKKyAgICAgICAg fQorCisgICAgICAgIHNpemUgPSBzc2l6ZTsKKyAgICB9CisKKyAgICBjcnlwdG9vcHRzID0gcWVt dV9vcHRzX3RvX3FkaWN0X2ZpbHRlcmVkKG9wdHMsIE5VTEwsCisgICAgICAgICAgICAmYmxvY2tf Y3J5cHRvX2NyZWF0ZV9vcHRzX2x1a3MsIHRydWUpOworICAgIHFkaWN0X3B1dF9zdHIoY3J5cHRv b3B0cywgImZvcm1hdCIsICJsdWtzIik7CisgICAgY3JlYXRlX29wdHMgPSBibG9ja19jcnlwdG9f Y3JlYXRlX29wdHNfaW5pdChjcnlwdG9vcHRzLCBlcnJwKTsKKyAgICBxb2JqZWN0X3VucmVmKGNy eXB0b29wdHMpOworICAgIGlmICghY3JlYXRlX29wdHMpIHsKKyAgICAgICAgZ290byBlcnI7Cisg ICAgfQorCisgICAgaWYgKCFxY3J5cHRvX2Jsb2NrX2NhbGN1bGF0ZV9wYXlsb2FkX29mZnNldChj cmVhdGVfb3B0cywgTlVMTCwKKyAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAg ICAgICAgICAgICZsdWtzX3BheWxvYWRfc2l6ZSwKKyAgICAgICAgICAgICAgICAgICAgICAgICAg ICAgICAgICAgICAgICAgICAgICAgICZsb2NhbF9lcnIpKSB7CisgICAgICAgIGdvdG8gZXJyOwor ICAgIH0KKworICAgIC8qCisgICAgICogVW5hbGxvY2F0ZWQgYmxvY2tzIGFyZSBzdGlsbCBlbmNy eXB0ZWQgc28gYWxsb2NhdGlvbiBzdGF0dXMgbWFrZXMgbm8KKyAgICAgKiBkaWZmZXJlbmNlIHRv IHRoZSBmaWxlIHNpemUuCisgICAgICovCisgICAgaW5mbyA9IGdfbmV3KEJsb2NrTWVhc3VyZUlu Zm8sIDEpOworICAgIGluZm8tPmZ1bGx5X2FsbG9jYXRlZCA9IGx1a3NfcGF5bG9hZF9zaXplICsg c2l6ZTsKKyAgICBpbmZvLT5yZXF1aXJlZCA9IGx1a3NfcGF5bG9hZF9zaXplICsgc2l6ZTsKKyAg ICByZXR1cm4gaW5mbzsKKworZXJyOgorICAgIGVycm9yX3Byb3BhZ2F0ZShlcnJwLCBsb2NhbF9l cnIpOworICAgIHJldHVybiBOVUxMOworfQorCisKIHN0YXRpYyBpbnQgYmxvY2tfY3J5cHRvX3By b2JlX2x1a3MoY29uc3QgdWludDhfdCAqYnVmLAogICAgICAgICAgICAgICAgICAgICAgICAgICAg ICAgICAgICBpbnQgYnVmX3NpemUsCiAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAg IGNvbnN0IGNoYXIgKmZpbGVuYW1lKSB7CkBAIC02NzAsNiArNzMxLDcgQEAgc3RhdGljIEJsb2Nr RHJpdmVyIGJkcnZfY3J5cHRvX2x1a3MgPSB7CiAgICAgLmJkcnZfY29fcHJlYWR2ICAgICA9IGJs b2NrX2NyeXB0b19jb19wcmVhZHYsCiAgICAgLmJkcnZfY29fcHdyaXRldiAgICA9IGJsb2NrX2Ny eXB0b19jb19wd3JpdGV2LAogICAgIC5iZHJ2X2dldGxlbmd0aCAgICAgPSBibG9ja19jcnlwdG9f Z2V0bGVuZ3RoLAorICAgIC5iZHJ2X21lYXN1cmUgICAgICAgPSBibG9ja19jcnlwdG9fbWVhc3Vy ZSwKICAgICAuYmRydl9nZXRfaW5mbyAgICAgID0gYmxvY2tfY3J5cHRvX2dldF9pbmZvX2x1a3Ms CiAgICAgLmJkcnZfZ2V0X3NwZWNpZmljX2luZm8gPSBibG9ja19jcnlwdG9fZ2V0X3NwZWNpZmlj X2luZm9fbHVrcywKIAotLSAKMi4yNC4xCgo=