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X-Received-From: 2a00:1450:400c:c09::244 Subject: [Qemu-devel] [PULL 10/50] scsi: Introduce scsi_sense_buf_to_errno X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Fam Zheng Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) X-ZohoMail: RDKM_2 RSF_0 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" From: Fam Zheng This recognizes the "fixed" and "descriptor" format sense data, extracts the sense key/asc/ascq fields then converts them to an errno. Signed-off-by: Fam Zheng Message-Id: <20170821141008.19383-4-famz@redhat.com> Signed-off-by: Paolo Bonzini --- include/scsi/scsi.h | 1 + util/scsi.c | 30 ++++++++++++++++++++++++++++++ 2 files changed, 31 insertions(+) diff --git a/include/scsi/scsi.h b/include/scsi/scsi.h index f894ace..fe33038 100644 --- a/include/scsi/scsi.h +++ b/include/scsi/scsi.h @@ -15,5 +15,6 @@ #define QEMU_SCSI_H =20 int scsi_sense_to_errno(int key, int asc, int ascq); +int scsi_sense_buf_to_errno(const uint8_t *sense, size_t sense_size); =20 #endif diff --git a/util/scsi.c b/util/scsi.c index 472eb5b..472293d 100644 --- a/util/scsi.c +++ b/util/scsi.c @@ -58,3 +58,33 @@ int scsi_sense_to_errno(int key, int asc, int ascq) return EIO; } } + +int scsi_sense_buf_to_errno(const uint8_t *sense, size_t sense_size) +{ + int key, asc, ascq; + if (sense_size < 1) { + return EIO; + } + switch (sense[0]) { + case 0x70: /* Fixed format sense data. */ + if (sense_size < 14) { + return EIO; + } + key =3D sense[2] & 0xF; + asc =3D sense[12]; + ascq =3D sense[13]; + break; + case 0x72: /* Descriptor format sense data. */ + if (sense_size < 4) { + return EIO; + } + key =3D sense[1] & 0xF; + asc =3D sense[2]; + ascq =3D sense[3]; + break; + default: + return EIO; + break; + } + return scsi_sense_to_errno(key, asc, ascq); +} --=20 1.8.3.1