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xemu/qerror.h
Stefan Hajnoczi 02fda01c30 qdev: add blocksize property type 
Storage interfaces like virtio-blk can be configured with block size
information so that the guest can take advantage of efficient I/O
request sizes.

According to the SCSI Block Commands (SBC) standard a device's block
size is "almost always greater than one byte and may be a multiple of
512 bytes".  QEMU currently has a 512 byte minimum block size because
the block layer functions work at that granularity.  Furthermore, the
block size should be a power of 2 because QEMU calculates bitmasks from
the value.

Introduce a "blocksize" property type so devices can enforce these
constraints on block size values.  If the constraints are relaxed in the
future then this property can be updated.

Introduce the new PropertyValueNotPowerOf2 QError so QMP clients know
exactly why a block size value was rejected.

Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-04-05 14:54:40 +02:00

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/*
* QError Module
*
* Copyright (C) 2009 Red Hat Inc.
*
* Authors:
* Luiz Capitulino <lcapitulino@redhat.com>
*
* This work is licensed under the terms of the GNU LGPL, version 2.1 or later.
* See the COPYING.LIB file in the top-level directory.
*/
#ifndef QERROR_H
#define QERROR_H
#include "qdict.h"
#include "qstring.h"
#include "qemu-error.h"
#include "error.h"
#include <stdarg.h>
typedef struct QErrorStringTable {
const char *desc;
const char *error_fmt;
} QErrorStringTable;
typedef struct QError {
QObject_HEAD;
QDict *error;
Location loc;
int linenr;
const char *file;
const char *func;
const QErrorStringTable *entry;
} QError;
QError *qerror_new(void);
QError *qerror_from_info(const char *file, int linenr, const char *func,
const char *fmt, va_list *va) GCC_FMT_ATTR(4, 0);
QString *qerror_human(const QError *qerror);
void qerror_print(QError *qerror);
void qerror_report_internal(const char *file, int linenr, const char *func,
const char *fmt, ...) GCC_FMT_ATTR(4, 5);
void qerror_report_err(Error *err);
void assert_no_error(Error *err);
QString *qerror_format(const char *fmt, QDict *error);
#define qerror_report(fmt, ...) \
qerror_report_internal(__FILE__, __LINE__, __func__, fmt, ## __VA_ARGS__)
QError *qobject_to_qerror(const QObject *obj);
/*
* QError class list
* Please keep the definitions in alphabetical order.
* Use scripts/check-qerror.sh to check.
*/
#define QERR_ADD_CLIENT_FAILED \
"{ 'class': 'AddClientFailed', 'data': {} }"
#define QERR_AMBIGUOUS_PATH \
"{ 'class': 'AmbiguousPath', 'data': { 'path': %s } }"
#define QERR_BAD_BUS_FOR_DEVICE \
"{ 'class': 'BadBusForDevice', 'data': { 'device': %s, 'bad_bus_type': %s } }"
#define QERR_BASE_NOT_FOUND \
"{ 'class': 'BaseNotFound', 'data': { 'base': %s } }"
#define QERR_BLOCK_FORMAT_FEATURE_NOT_SUPPORTED \
"{ 'class': 'BlockFormatFeatureNotSupported', 'data': { 'format': %s, 'name': %s, 'feature': %s } }"
#define QERR_BUFFER_OVERRUN \
"{ 'class': 'BufferOverrun', 'data': {} }"
#define QERR_BUS_NO_HOTPLUG \
"{ 'class': 'BusNoHotplug', 'data': { 'bus': %s } }"
#define QERR_BUS_NOT_FOUND \
"{ 'class': 'BusNotFound', 'data': { 'bus': %s } }"
#define QERR_COMMAND_DISABLED \
"{ 'class': 'CommandDisabled', 'data': { 'name': %s } }"
#define QERR_COMMAND_NOT_FOUND \
"{ 'class': 'CommandNotFound', 'data': { 'name': %s } }"
#define QERR_DEVICE_ENCRYPTED \
"{ 'class': 'DeviceEncrypted', 'data': { 'device': %s, 'filename': %s } }"
#define QERR_DEVICE_FEATURE_BLOCKS_MIGRATION \
"{ 'class': 'DeviceFeatureBlocksMigration', 'data': { 'device': %s, 'feature': %s } }"
#define QERR_DEVICE_HAS_NO_MEDIUM \
"{ 'class': 'DeviceHasNoMedium', 'data': { 'device': %s } }"
#define QERR_DEVICE_INIT_FAILED \
"{ 'class': 'DeviceInitFailed', 'data': { 'device': %s } }"
#define QERR_DEVICE_IN_USE \
"{ 'class': 'DeviceInUse', 'data': { 'device': %s } }"
#define QERR_DEVICE_IS_READ_ONLY \
"{ 'class': 'DeviceIsReadOnly', 'data': { 'device': %s } }"
#define QERR_DEVICE_LOCKED \
"{ 'class': 'DeviceLocked', 'data': { 'device': %s } }"
#define QERR_DEVICE_MULTIPLE_BUSSES \
"{ 'class': 'DeviceMultipleBusses', 'data': { 'device': %s } }"
#define QERR_DEVICE_NO_BUS \
"{ 'class': 'DeviceNoBus', 'data': { 'device': %s } }"
#define QERR_DEVICE_NO_HOTPLUG \
"{ 'class': 'DeviceNoHotplug', 'data': { 'device': %s } }"
#define QERR_DEVICE_NOT_ACTIVE \
"{ 'class': 'DeviceNotActive', 'data': { 'device': %s } }"
#define QERR_DEVICE_NOT_ENCRYPTED \
"{ 'class': 'DeviceNotEncrypted', 'data': { 'device': %s } }"
#define QERR_DEVICE_NOT_FOUND \
"{ 'class': 'DeviceNotFound', 'data': { 'device': %s } }"
#define QERR_DEVICE_NOT_REMOVABLE \
"{ 'class': 'DeviceNotRemovable', 'data': { 'device': %s } }"
#define QERR_DUPLICATE_ID \
"{ 'class': 'DuplicateId', 'data': { 'id': %s, 'object': %s } }"
#define QERR_FD_NOT_FOUND \
"{ 'class': 'FdNotFound', 'data': { 'name': %s } }"
#define QERR_FD_NOT_SUPPLIED \
"{ 'class': 'FdNotSupplied', 'data': {} }"
#define QERR_FEATURE_DISABLED \
"{ 'class': 'FeatureDisabled', 'data': { 'name': %s } }"
#define QERR_INVALID_BLOCK_FORMAT \
"{ 'class': 'InvalidBlockFormat', 'data': { 'name': %s } }"
#define QERR_INVALID_PARAMETER \
"{ 'class': 'InvalidParameter', 'data': { 'name': %s } }"
#define QERR_INVALID_PARAMETER_COMBINATION \
"{ 'class': 'InvalidParameterCombination', 'data': {} }"
#define QERR_INVALID_PARAMETER_TYPE \
"{ 'class': 'InvalidParameterType', 'data': { 'name': %s,'expected': %s } }"
#define QERR_INVALID_PARAMETER_VALUE \
"{ 'class': 'InvalidParameterValue', 'data': { 'name': %s, 'expected': %s } }"
#define QERR_INVALID_PASSWORD \
"{ 'class': 'InvalidPassword', 'data': {} }"
#define QERR_IO_ERROR \
"{ 'class': 'IOError', 'data': {} }"
#define QERR_JSON_PARSE_ERROR \
"{ 'class': 'JSONParseError', 'data': { 'message': %s } }"
#define QERR_JSON_PARSING \
"{ 'class': 'JSONParsing', 'data': {} }"
#define QERR_KVM_MISSING_CAP \
"{ 'class': 'KVMMissingCap', 'data': { 'capability': %s, 'feature': %s } }"
#define QERR_MIGRATION_ACTIVE \
"{ 'class': 'MigrationActive', 'data': {} }"
#define QERR_MIGRATION_NOT_SUPPORTED \
"{ 'class': 'MigrationNotSupported', 'data': {'device': %s} }"
#define QERR_MIGRATION_EXPECTED \
"{ 'class': 'MigrationExpected', 'data': {} }"
#define QERR_MISSING_PARAMETER \
"{ 'class': 'MissingParameter', 'data': { 'name': %s } }"
#define QERR_NO_BUS_FOR_DEVICE \
"{ 'class': 'NoBusForDevice', 'data': { 'device': %s, 'bus': %s } }"
#define QERR_NOT_SUPPORTED \
"{ 'class': 'NotSupported', 'data': {} }"
#define QERR_OPEN_FILE_FAILED \
"{ 'class': 'OpenFileFailed', 'data': { 'filename': %s } }"
#define QERR_PERMISSION_DENIED \
"{ 'class': 'PermissionDenied', 'data': {} }"
#define QERR_PROPERTY_NOT_FOUND \
"{ 'class': 'PropertyNotFound', 'data': { 'device': %s, 'property': %s } }"
#define QERR_PROPERTY_VALUE_BAD \
"{ 'class': 'PropertyValueBad', 'data': { 'device': %s, 'property': %s, 'value': %s } }"
#define QERR_PROPERTY_VALUE_IN_USE \
"{ 'class': 'PropertyValueInUse', 'data': { 'device': %s, 'property': %s, 'value': %s } }"
#define QERR_PROPERTY_VALUE_NOT_FOUND \
"{ 'class': 'PropertyValueNotFound', 'data': { 'device': %s, 'property': %s, 'value': %s } }"
#define QERR_PROPERTY_VALUE_NOT_POWER_OF_2 \
"{ 'class': 'PropertyValueNotPowerOf2', 'data': { " \
"'device': %s, 'property': %s, 'value': %"PRId64" } }"
#define QERR_PROPERTY_VALUE_OUT_OF_RANGE \
"{ 'class': 'PropertyValueOutOfRange', 'data': { 'device': %s, 'property': %s, 'value': %"PRId64", 'min': %"PRId64", 'max': %"PRId64" } }"
#define QERR_QGA_COMMAND_FAILED \
"{ 'class': 'QgaCommandFailed', 'data': { 'message': %s } }"
#define QERR_QGA_LOGGING_FAILED \
"{ 'class': 'QgaLoggingFailed', 'data': {} }"
#define QERR_QMP_BAD_INPUT_OBJECT \
"{ 'class': 'QMPBadInputObject', 'data': { 'expected': %s } }"
#define QERR_QMP_BAD_INPUT_OBJECT_MEMBER \
"{ 'class': 'QMPBadInputObjectMember', 'data': { 'member': %s, 'expected': %s } }"
#define QERR_QMP_EXTRA_MEMBER \
"{ 'class': 'QMPExtraInputObjectMember', 'data': { 'member': %s } }"
#define QERR_RESET_REQUIRED \
"{ 'class': 'ResetRequired', 'data': {} }"
#define QERR_SET_PASSWD_FAILED \
"{ 'class': 'SetPasswdFailed', 'data': {} }"
#define QERR_TOO_MANY_FILES \
"{ 'class': 'TooManyFiles', 'data': {} }"
#define QERR_UNDEFINED_ERROR \
"{ 'class': 'UndefinedError', 'data': {} }"
#define QERR_UNKNOWN_BLOCK_FORMAT_FEATURE \
"{ 'class': 'UnknownBlockFormatFeature', 'data': { 'device': %s, 'format': %s, 'feature': %s } }"
#define QERR_UNSUPPORTED \
"{ 'class': 'Unsupported', 'data': {} }"
#define QERR_VIRTFS_FEATURE_BLOCKS_MIGRATION \
"{ 'class': 'VirtFSFeatureBlocksMigration', 'data': { 'path': %s, 'tag': %s } }"
#define QERR_VNC_SERVER_FAILED \
"{ 'class': 'VNCServerFailed', 'data': { 'target': %s } }"
#endif /* QERROR_H */
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