diff options
Diffstat (limited to 'qerror.c')
| -rw-r--r-- | qerror.c | 516 |
1 files changed, 14 insertions, 502 deletions
@@ -23,320 +23,11 @@ static const QType qerror_type = { }; /** - * The 'desc' parameter is a printf-like string, the format of the format - * string is: - * - * %(KEY) - * - * Where KEY is a QDict key, which has to be passed to qerror_from_info(). - * - * Example: - * - * "foo error on device: %(device) slot: %(slot_nr)" - * - * A single percent sign can be printed if followed by a second one, - * for example: - * - * "running out of foo: %(foo)%%" - * - * Please keep the entries in alphabetical order. - * Use scripts/check-qerror.sh to check. - */ -static const QErrorStringTable qerror_table[] = { - { - .error_fmt = QERR_ADD_CLIENT_FAILED, - .desc = "Could not add client", - }, - { - .error_fmt = QERR_AMBIGUOUS_PATH, - .desc = "Path '%(path)' does not uniquely identify a %(object)" - }, - { - .error_fmt = QERR_BAD_BUS_FOR_DEVICE, - .desc = "Device '%(device)' can't go on a %(bad_bus_type) bus", - }, - { - .error_fmt = QERR_BASE_NOT_FOUND, - .desc = "Base '%(base)' not found", - }, - { - .error_fmt = QERR_BLOCK_FORMAT_FEATURE_NOT_SUPPORTED, - .desc = "Block format '%(format)' used by device '%(name)' does not support feature '%(feature)'", - }, - { - .error_fmt = QERR_BUS_NO_HOTPLUG, - .desc = "Bus '%(bus)' does not support hotplugging", - }, - { - .error_fmt = QERR_BUS_NOT_FOUND, - .desc = "Bus '%(bus)' not found", - }, - { - .error_fmt = QERR_COMMAND_DISABLED, - .desc = "The command %(name) has been disabled for this instance", - }, - { - .error_fmt = QERR_COMMAND_NOT_FOUND, - .desc = "The command %(name) has not been found", - }, - { - .error_fmt = QERR_DEVICE_ENCRYPTED, - .desc = "Device '%(device)' is encrypted", - }, - { - .error_fmt = QERR_DEVICE_FEATURE_BLOCKS_MIGRATION, - .desc = "Migration is disabled when using feature '%(feature)' in device '%(device)'", - }, - { - .error_fmt = QERR_DEVICE_HAS_NO_MEDIUM, - .desc = "Device '%(device)' has no medium", - }, - { - .error_fmt = QERR_DEVICE_INIT_FAILED, - .desc = "Device '%(device)' could not be initialized", - }, - { - .error_fmt = QERR_DEVICE_IN_USE, - .desc = "Device '%(device)' is in use", - }, - { - .error_fmt = QERR_DEVICE_IS_READ_ONLY, - .desc = "Device '%(device)' is read only", - }, - { - .error_fmt = QERR_DEVICE_LOCKED, - .desc = "Device '%(device)' is locked", - }, - { - .error_fmt = QERR_DEVICE_MULTIPLE_BUSSES, - .desc = "Device '%(device)' has multiple child busses", - }, - { - .error_fmt = QERR_DEVICE_NO_BUS, - .desc = "Device '%(device)' has no child bus", - }, - { - .error_fmt = QERR_DEVICE_NO_HOTPLUG, - .desc = "Device '%(device)' does not support hotplugging", - }, - { - .error_fmt = QERR_DEVICE_NOT_ACTIVE, - .desc = "Device '%(device)' has not been activated", - }, - { - .error_fmt = QERR_DEVICE_NOT_ENCRYPTED, - .desc = "Device '%(device)' is not encrypted", - }, - { - .error_fmt = QERR_DEVICE_NOT_FOUND, - .desc = "Device '%(device)' not found", - }, - { - .error_fmt = QERR_DEVICE_NOT_REMOVABLE, - .desc = "Device '%(device)' is not removable", - }, - { - .error_fmt = QERR_DUPLICATE_ID, - .desc = "Duplicate ID '%(id)' for %(object)", - }, - { - .error_fmt = QERR_FD_NOT_FOUND, - .desc = "File descriptor named '%(name)' not found", - }, - { - .error_fmt = QERR_FD_NOT_SUPPLIED, - .desc = "No file descriptor supplied via SCM_RIGHTS", - }, - { - .error_fmt = QERR_FEATURE_DISABLED, - .desc = "The feature '%(name)' is not enabled", - }, - { - .error_fmt = QERR_INVALID_BLOCK_FORMAT, - .desc = "Invalid block format '%(name)'", - }, - { - .error_fmt = QERR_INVALID_OPTION_GROUP, - .desc = "There is no option group '%(group)'", - }, - { - .error_fmt = QERR_INVALID_PARAMETER, - .desc = "Invalid parameter '%(name)'", - }, - { - .error_fmt = QERR_INVALID_PARAMETER_COMBINATION, - .desc = "Invalid parameter combination", - }, - { - .error_fmt = QERR_INVALID_PARAMETER_TYPE, - .desc = "Invalid parameter type for '%(name)', expected: %(expected)", - }, - { - .error_fmt = QERR_INVALID_PARAMETER_VALUE, - .desc = "Parameter '%(name)' expects %(expected)", - }, - { - .error_fmt = QERR_INVALID_PASSWORD, - .desc = "Password incorrect", - }, - { - .error_fmt = QERR_IO_ERROR, - .desc = "An IO error has occurred", - }, - { - .error_fmt = QERR_JSON_PARSE_ERROR, - .desc = "JSON parse error, %(message)", - - }, - { - .error_fmt = QERR_JSON_PARSING, - .desc = "Invalid JSON syntax", - }, - { - .error_fmt = QERR_KVM_MISSING_CAP, - .desc = "Using KVM without %(capability), %(feature) unavailable", - }, - { - .error_fmt = QERR_MIGRATION_ACTIVE, - .desc = "There's a migration process in progress", - }, - { - .error_fmt = QERR_MIGRATION_NOT_SUPPORTED, - .desc = "State blocked by non-migratable device '%(device)'", - }, - { - .error_fmt = QERR_MIGRATION_EXPECTED, - .desc = "An incoming migration is expected before this command can be executed", - }, - { - .error_fmt = QERR_MISSING_PARAMETER, - .desc = "Parameter '%(name)' is missing", - }, - { - .error_fmt = QERR_NO_BUS_FOR_DEVICE, - .desc = "No '%(bus)' bus found for device '%(device)'", - }, - { - .error_fmt = QERR_NOT_SUPPORTED, - .desc = "Not supported", - }, - { - .error_fmt = QERR_OPEN_FILE_FAILED, - .desc = "Could not open '%(filename)'", - }, - { - .error_fmt = QERR_PERMISSION_DENIED, - .desc = "Insufficient permission to perform this operation", - }, - { - .error_fmt = QERR_PROPERTY_NOT_FOUND, - .desc = "Property '%(device).%(property)' not found", - }, - { - .error_fmt = QERR_PROPERTY_VALUE_BAD, - .desc = "Property '%(device).%(property)' doesn't take value '%(value)'", - }, - { - .error_fmt = QERR_PROPERTY_VALUE_IN_USE, - .desc = "Property '%(device).%(property)' can't take value '%(value)', it's in use", - }, - { - .error_fmt = QERR_PROPERTY_VALUE_NOT_FOUND, - .desc = "Property '%(device).%(property)' can't find value '%(value)'", - }, - { - .error_fmt = QERR_PROPERTY_VALUE_NOT_POWER_OF_2, - .desc = "Property '%(device).%(property)' doesn't take " - "value '%(value)', it's not a power of 2", - }, - { - .error_fmt = QERR_PROPERTY_VALUE_OUT_OF_RANGE, - .desc = "Property '%(device).%(property)' doesn't take " - "value %(value) (minimum: %(min), maximum: %(max))", - }, - { - .error_fmt = QERR_QGA_COMMAND_FAILED, - .desc = "Guest agent command failed, error was '%(message)'", - }, - { - .error_fmt = QERR_QGA_LOGGING_FAILED, - .desc = "Guest agent failed to log non-optional log statement", - }, - { - .error_fmt = QERR_QMP_BAD_INPUT_OBJECT, - .desc = "Expected '%(expected)' in QMP input", - }, - { - .error_fmt = QERR_QMP_BAD_INPUT_OBJECT_MEMBER, - .desc = "QMP input object member '%(member)' expects '%(expected)'", - }, - { - .error_fmt = QERR_QMP_EXTRA_MEMBER, - .desc = "QMP input object member '%(member)' is unexpected", - }, - { - .error_fmt = QERR_RESET_REQUIRED, - .desc = "Resetting the Virtual Machine is required", - }, - { - .error_fmt = QERR_SET_PASSWD_FAILED, - .desc = "Could not set password", - }, - { - .error_fmt = QERR_TOO_MANY_FILES, - .desc = "Too many open files", - }, - { - .error_fmt = QERR_UNDEFINED_ERROR, - .desc = "An undefined error has occurred", - }, - { - .error_fmt = QERR_UNKNOWN_BLOCK_FORMAT_FEATURE, - .desc = "'%(device)' uses a %(format) feature which is not " - "supported by this qemu version: %(feature)", - }, - { - .error_fmt = QERR_UNSUPPORTED, - .desc = "this feature or command is not currently supported", - }, - { - .error_fmt = QERR_VIRTFS_FEATURE_BLOCKS_MIGRATION, - .desc = "Migration is disabled when VirtFS export path '%(path)' " - "is mounted in the guest using mount_tag '%(tag)'", - }, - { - .error_fmt = QERR_VNC_SERVER_FAILED, - .desc = "Could not start VNC server on %(target)", - }, - { - .error_fmt = QERR_SOCKET_CONNECT_IN_PROGRESS, - .desc = "Connection can not be completed immediately", - }, - { - .error_fmt = QERR_SOCKET_CONNECT_FAILED, - .desc = "Failed to connect to socket", - }, - { - .error_fmt = QERR_SOCKET_LISTEN_FAILED, - .desc = "Failed to set socket to listening mode", - }, - { - .error_fmt = QERR_SOCKET_BIND_FAILED, - .desc = "Failed to bind socket", - }, - { - .error_fmt = QERR_SOCKET_CREATE_FAILED, - .desc = "Failed to create socket", - }, - {} -}; - -/** * qerror_new(): Create a new QError * * Return strong reference. */ -QError *qerror_new(void) +static QError *qerror_new(void) { QError *qerr; @@ -346,200 +37,31 @@ QError *qerror_new(void) return qerr; } -static void GCC_FMT_ATTR(2, 3) qerror_abort(const QError *qerr, - const char *fmt, ...) -{ - va_list ap; - - fprintf(stderr, "qerror: bad call in function '%s':\n", qerr->func); - fprintf(stderr, "qerror: -> "); - - va_start(ap, fmt); - vfprintf(stderr, fmt, ap); - va_end(ap); - - fprintf(stderr, "\nqerror: call at %s:%d\n", qerr->file, qerr->linenr); - abort(); -} - -static void GCC_FMT_ATTR(2, 0) qerror_set_data(QError *qerr, - const char *fmt, va_list *va) -{ - QObject *obj; - - obj = qobject_from_jsonv(fmt, va); - if (!obj) { - qerror_abort(qerr, "invalid format '%s'", fmt); - } - if (qobject_type(obj) != QTYPE_QDICT) { - qerror_abort(qerr, "error format is not a QDict '%s'", fmt); - } - - qerr->error = qobject_to_qdict(obj); - - obj = qdict_get(qerr->error, "class"); - if (!obj) { - qerror_abort(qerr, "missing 'class' key in '%s'", fmt); - } - if (qobject_type(obj) != QTYPE_QSTRING) { - qerror_abort(qerr, "'class' key value should be a QString"); - } - - obj = qdict_get(qerr->error, "data"); - if (!obj) { - qerror_abort(qerr, "missing 'data' key in '%s'", fmt); - } - if (qobject_type(obj) != QTYPE_QDICT) { - qerror_abort(qerr, "'data' key value should be a QDICT"); - } -} - -static void qerror_set_desc(QError *qerr, const char *fmt) -{ - int i; - - // FIXME: inefficient loop - - for (i = 0; qerror_table[i].error_fmt; i++) { - if (strcmp(qerror_table[i].error_fmt, fmt) == 0) { - qerr->entry = &qerror_table[i]; - return; - } - } - - qerror_abort(qerr, "error format '%s' not found", fmt); -} - /** * qerror_from_info(): Create a new QError from error information * - * The information consists of: - * - * - file the file name of where the error occurred - * - linenr the line number of where the error occurred - * - func the function name of where the error occurred - * - fmt JSON printf-like dictionary, there must exist keys 'class' and - * 'data' - * - va va_list of all arguments specified by fmt - * * Return strong reference. */ -QError *qerror_from_info(const char *file, int linenr, const char *func, - const char *fmt, va_list *va) +static QError *qerror_from_info(ErrorClass err_class, const char *fmt, + va_list *va) { QError *qerr; qerr = qerror_new(); loc_save(&qerr->loc); - qerr->linenr = linenr; - qerr->file = file; - qerr->func = func; - - if (!fmt) { - qerror_abort(qerr, "QDict not specified"); - } - qerror_set_data(qerr, fmt, va); - qerror_set_desc(qerr, fmt); + qerr->err_msg = g_strdup_vprintf(fmt, *va); + qerr->err_class = err_class; return qerr; } -static void parse_error(const QErrorStringTable *entry, int c) -{ - fprintf(stderr, "expected '%c' in '%s'", c, entry->desc); - abort(); -} - -static const char *append_field(QDict *error, QString *outstr, - const QErrorStringTable *entry, - const char *start) -{ - QObject *obj; - QDict *qdict; - QString *key_qs; - const char *end, *key; - - if (*start != '%') - parse_error(entry, '%'); - start++; - if (*start != '(') - parse_error(entry, '('); - start++; - - end = strchr(start, ')'); - if (!end) - parse_error(entry, ')'); - - key_qs = qstring_from_substr(start, 0, end - start - 1); - key = qstring_get_str(key_qs); - - qdict = qobject_to_qdict(qdict_get(error, "data")); - obj = qdict_get(qdict, key); - if (!obj) { - abort(); - } - - switch (qobject_type(obj)) { - case QTYPE_QSTRING: - qstring_append(outstr, qdict_get_str(qdict, key)); - break; - case QTYPE_QINT: - qstring_append_int(outstr, qdict_get_int(qdict, key)); - break; - default: - abort(); - } - - QDECREF(key_qs); - return ++end; -} - -static QString *qerror_format_desc(QDict *error, - const QErrorStringTable *entry) -{ - QString *qstring; - const char *p; - - assert(entry != NULL); - - qstring = qstring_new(); - - for (p = entry->desc; *p != '\0';) { - if (*p != '%') { - qstring_append_chr(qstring, *p++); - } else if (*(p + 1) == '%') { - qstring_append_chr(qstring, '%'); - p += 2; - } else { - p = append_field(error, qstring, entry, p); - } - } - - return qstring; -} - -QString *qerror_format(const char *fmt, QDict *error) -{ - const QErrorStringTable *entry = NULL; - int i; - - for (i = 0; qerror_table[i].error_fmt; i++) { - if (strcmp(qerror_table[i].error_fmt, fmt) == 0) { - entry = &qerror_table[i]; - break; - } - } - - return qerror_format_desc(error, entry); -} - /** * qerror_human(): Format QError data into human-readable string. */ QString *qerror_human(const QError *qerror) { - return qerror_format_desc(qerror->error, qerror->entry); + return qstring_from_str(qerror->err_msg); } /** @@ -549,7 +71,7 @@ QString *qerror_human(const QError *qerror) * it uses error_report() for this, so that the output is routed to the right * place (ie. stderr or Monitor's device). */ -void qerror_print(QError *qerror) +static void qerror_print(QError *qerror) { QString *qstring = qerror_human(qerror); loc_push_restore(&qerror->loc); @@ -558,14 +80,13 @@ void qerror_print(QError *qerror) QDECREF(qstring); } -void qerror_report_internal(const char *file, int linenr, const char *func, - const char *fmt, ...) +void qerror_report(ErrorClass eclass, const char *fmt, ...) { va_list va; QError *qerror; va_start(va, fmt); - qerror = qerror_from_info(file, linenr, func, fmt, &va); + qerror = qerror_from_info(eclass, fmt, &va); va_end(va); if (monitor_cur_is_qmp()) { @@ -579,27 +100,18 @@ void qerror_report_internal(const char *file, int linenr, const char *func, /* Evil... */ struct Error { - QDict *obj; - const char *fmt; char *msg; + ErrorClass err_class; }; void qerror_report_err(Error *err) { QError *qerr; - int i; qerr = qerror_new(); loc_save(&qerr->loc); - QINCREF(err->obj); - qerr->error = err->obj; - - for (i = 0; qerror_table[i].error_fmt; i++) { - if (strcmp(qerror_table[i].error_fmt, err->fmt) == 0) { - qerr->entry = &qerror_table[i]; - break; - } - } + qerr->err_msg = g_strdup(err->msg); + qerr->err_class = err->err_class; if (monitor_cur_is_qmp()) { monitor_set_error(cur_mon, qerr); @@ -620,7 +132,7 @@ void assert_no_error(Error *err) /** * qobject_to_qerror(): Convert a QObject into a QError */ -QError *qobject_to_qerror(const QObject *obj) +static QError *qobject_to_qerror(const QObject *obj) { if (qobject_type(obj) != QTYPE_QERROR) { return NULL; @@ -639,6 +151,6 @@ static void qerror_destroy_obj(QObject *obj) assert(obj != NULL); qerr = qobject_to_qerror(obj); - QDECREF(qerr->error); + g_free(qerr->err_msg); g_free(qerr); } |
