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qemu/1004-scsi-Refactor-scsi-sen...

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From f35ef58b2bac932bbd379602fe23e7a190530075 Mon Sep 17 00:00:00 2001
From: Fam Zheng <famz@redhat.com>
Date: Mon, 21 Aug 2017 22:10:05 +0800
Subject: [PATCH 04/15] 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 <famz@redhat.com>
Message-Id: <20170821141008.19383-2-famz@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
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 ccee28b12d..2a4e5036ae 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -969,7 +969,9 @@ SCSI
M: Paolo Bonzini <pbonzini@redhat.com>
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 d557c99668..4bed63cd6d 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 <iscsi/iscsi.h>
#include <iscsi/scsi-lowlevel.h>
@@ -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 <famz@redhat.com>
+ *
+ * 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 <famz@redhat.com>
+ *
+ * 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;
+ }
+}
--
2.13.5
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