From 2875135807771a0d07ba1c878c20b757ed7adffb Mon Sep 17 00:00:00 2001 From: Fam Zheng Date: Mon, 21 Aug 2017 22:10:05 +0800 Subject: [PATCH] scsi: Refactor scsi sense interpreting code So that it can be reused outside of iscsi.c. Also update MAINTAINERS to include the new files in SCSI section. Signed-off-by: Fam Zheng Message-Id: <20170821141008.19383-2-famz@redhat.com> Signed-off-by: Paolo Bonzini --- MAINTAINERS | 2 ++ block/iscsi.c | 45 ++++----------------------------------------- include/scsi/scsi.h | 19 +++++++++++++++++++ util/Makefile.objs | 1 + util/scsi.c | 52 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 5 files changed, 78 insertions(+), 41 deletions(-) create mode 100644 include/scsi/scsi.h create mode 100644 util/scsi.c diff --git a/MAINTAINERS b/MAINTAINERS index 4bd1797330..c207cb0014 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -968,7 +968,9 @@ SCSI M: Paolo Bonzini S: Supported F: include/hw/scsi/* +F: include/scsi/* F: hw/scsi/* +F: util/scsi* F: tests/virtio-scsi-test.c T: git git://github.com/bonzini/qemu.git scsi-next diff --git a/block/iscsi.c b/block/iscsi.c index 8b47d30dcc..1e8ae5a8cf 100644 --- a/block/iscsi.c +++ b/block/iscsi.c @@ -40,6 +40,7 @@ #include "qmp-commands.h" #include "qapi/qmp/qstring.h" #include "crypto/secret.h" +#include "scsi/scsi.h" #include #include @@ -209,47 +210,9 @@ static inline unsigned exp_random(double mean) static int iscsi_translate_sense(struct scsi_sense *sense) { - int ret; - - switch (sense->key) { - case SCSI_SENSE_NOT_READY: - return -EBUSY; - case SCSI_SENSE_DATA_PROTECTION: - return -EACCES; - case SCSI_SENSE_COMMAND_ABORTED: - return -ECANCELED; - case SCSI_SENSE_ILLEGAL_REQUEST: - /* Parse ASCQ */ - break; - default: - return -EIO; - } - switch (sense->ascq) { - case SCSI_SENSE_ASCQ_PARAMETER_LIST_LENGTH_ERROR: - case SCSI_SENSE_ASCQ_INVALID_OPERATION_CODE: - case SCSI_SENSE_ASCQ_INVALID_FIELD_IN_CDB: - case SCSI_SENSE_ASCQ_INVALID_FIELD_IN_PARAMETER_LIST: - ret = -EINVAL; - break; - case SCSI_SENSE_ASCQ_LBA_OUT_OF_RANGE: - ret = -ENOSPC; - break; - case SCSI_SENSE_ASCQ_LOGICAL_UNIT_NOT_SUPPORTED: - ret = -ENOTSUP; - break; - case SCSI_SENSE_ASCQ_MEDIUM_NOT_PRESENT: - case SCSI_SENSE_ASCQ_MEDIUM_NOT_PRESENT_TRAY_CLOSED: - case SCSI_SENSE_ASCQ_MEDIUM_NOT_PRESENT_TRAY_OPEN: - ret = -ENOMEDIUM; - break; - case SCSI_SENSE_ASCQ_WRITE_PROTECTED: - ret = -EACCES; - break; - default: - ret = -EIO; - break; - } - return ret; + return - scsi_sense_to_errno(sense->key, + (sense->ascq & 0xFF00) >> 8, + sense->ascq & 0xFF); } /* Called (via iscsi_service) with QemuMutex held. */ diff --git a/include/scsi/scsi.h b/include/scsi/scsi.h new file mode 100644 index 0000000000..f894ace4bf --- /dev/null +++ b/include/scsi/scsi.h @@ -0,0 +1,19 @@ +/* + * SCSI helpers + * + * Copyright 2017 Red Hat, Inc. + * + * Authors: + * Fam Zheng + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the Free + * Software Foundation; either version 2 of the License, or (at your option) + * any later version. + */ +#ifndef QEMU_SCSI_H +#define QEMU_SCSI_H + +int scsi_sense_to_errno(int key, int asc, int ascq); + +#endif diff --git a/util/Makefile.objs b/util/Makefile.objs index 50a55ecc75..c9e6c493d3 100644 --- a/util/Makefile.objs +++ b/util/Makefile.objs @@ -45,3 +45,4 @@ util-obj-y += qht.o util-obj-y += range.o util-obj-y += stats64.o util-obj-y += systemd.o +util-obj-y += scsi.o diff --git a/util/scsi.c b/util/scsi.c new file mode 100644 index 0000000000..a6710799fc --- /dev/null +++ b/util/scsi.c @@ -0,0 +1,52 @@ +/* + * SCSI helpers + * + * Copyright 2017 Red Hat, Inc. + * + * Authors: + * Fam Zheng + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the Free + * Software Foundation; either version 2 of the License, or (at your option) + * any later version. + */ + +#include "qemu/osdep.h" +#include "scsi/scsi.h" + +int scsi_sense_to_errno(int key, int asc, int ascq) +{ + switch (key) { + case 0x02: /* NOT READY */ + return EBUSY; + case 0x07: /* DATA PROTECTION */ + return EACCES; + case 0x0b: /* COMMAND ABORTED */ + return ECANCELED; + case 0x05: /* ILLEGAL REQUEST */ + /* Parse ASCQ */ + break; + default: + return EIO; + } + switch ((asc << 8) | ascq) { + case 0x1a00: /* PARAMETER LIST LENGTH ERROR */ + case 0x2000: /* INVALID OPERATION CODE */ + case 0x2400: /* INVALID FIELD IN CDB */ + case 0x2600: /* INVALID FIELD IN PARAMETER LIST */ + return EINVAL; + case 0x2100: /* LBA OUT OF RANGE */ + return ENOSPC; + case 0x2500: /* LOGICAL UNIT NOT SUPPORTED */ + return ENOTSUP; + case 0x3a00: /* MEDIUM NOT PRESENT */ + case 0x3a01: /* MEDIUM NOT PRESENT TRAY CLOSED */ + case 0x3a02: /* MEDIUM NOT PRESENT TRAY OPEN */ + return ENOMEDIUM; + case 0x2700: /* WRITE PROTECTED */ + return EACCES; + default: + return EIO; + } +} -- 2.11.4.GIT