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qapi: Add Visitor interfaces for uint*_t and int*_t 

This adds visitor interfaces for fixed-width integers types.
Implementing these in visitors is optional, otherwise we fall back to
visit_type_int() (int64_t) with some additional bounds checking to avoid
integer overflows for cases where the value fetched exceeds the bounds
of our target C type.

Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
[LE: exclude negative values in uint*_t Visitor interfaces]
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
[AF: Merged fix by Laszlo]
Signed-off-by: Andreas Färber <afaerber@suse.de>
This commit is contained in:
Michael Roth 2011-08-25 10:44:50 -05:00 committed by Andreas Färber
parent fa79c914ef
commit 4e27e819be
3 changed files with 155 additions and 7 deletions
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7
hw/mc146818rtc.c
View File

@ -599,13 +599,6 @@ static const MemoryRegionOps cmos_ops = {
.old_portio = cmos_portio
};
// FIXME add int32 visitor
static void visit_type_int32(Visitor *v, int *value, const char *name, Error **errp)
{
int64_t val = *value;
visit_type_int(v, &val, name, errp);
}
static void rtc_get_date(Object *obj, Visitor *v, void *opaque,
const char *name, Error **errp)
{

139
qapi/qapi-visit-core.c
View File

@ -97,6 +97,145 @@ void visit_type_int(Visitor *v, int64_t *obj, const char *name, Error **errp)
}
}
void visit_type_uint8(Visitor *v, uint8_t *obj, const char *name, Error **errp)
{
int64_t value;
if (!error_is_set(errp)) {
if (v->type_uint8) {
v->type_uint8(v, obj, name, errp);
} else {
value = *obj;
v->type_int(v, &value, name, errp);
if (value < 0 || value > UINT8_MAX) {
error_set(errp, QERR_INVALID_PARAMETER_VALUE, name ? name : "null",
"uint8_t");
return;
}
*obj = value;
}
}
}
void visit_type_uint16(Visitor *v, uint16_t *obj, const char *name, Error **errp)
{
int64_t value;
if (!error_is_set(errp)) {
if (v->type_uint16) {
v->type_uint16(v, obj, name, errp);
} else {
value = *obj;
v->type_int(v, &value, name, errp);
if (value < 0 || value > UINT16_MAX) {
error_set(errp, QERR_INVALID_PARAMETER_VALUE, name ? name : "null",
"uint16_t");
return;
}
*obj = value;
}
}
}
void visit_type_uint32(Visitor *v, uint32_t *obj, const char *name, Error **errp)
{
int64_t value;
if (!error_is_set(errp)) {
if (v->type_uint32) {
v->type_uint32(v, obj, name, errp);
} else {
value = *obj;
v->type_int(v, &value, name, errp);
if (value < 0 || value > UINT32_MAX) {
error_set(errp, QERR_INVALID_PARAMETER_VALUE, name ? name : "null",
"uint32_t");
return;
}
*obj = value;
}
}
}
void visit_type_uint64(Visitor *v, uint64_t *obj, const char *name, Error **errp)
{
int64_t value;
if (!error_is_set(errp)) {
if (v->type_uint64) {
v->type_uint64(v, obj, name, errp);
} else {
value = *obj;
v->type_int(v, &value, name, errp);
*obj = value;
}
}
}
void visit_type_int8(Visitor *v, int8_t *obj, const char *name, Error **errp)
{
int64_t value;
if (!error_is_set(errp)) {
if (v->type_int8) {
v->type_int8(v, obj, name, errp);
} else {
value = *obj;
v->type_int(v, &value, name, errp);
if (value < INT8_MIN || value > INT8_MAX) {
error_set(errp, QERR_INVALID_PARAMETER_VALUE, name ? name : "null",
"int8_t");
return;
}
*obj = value;
}
}
}
void visit_type_int16(Visitor *v, int16_t *obj, const char *name, Error **errp)
{
int64_t value;
if (!error_is_set(errp)) {
if (v->type_int16) {
v->type_int16(v, obj, name, errp);
} else {
value = *obj;
v->type_int(v, &value, name, errp);
if (value < INT16_MIN || value > INT16_MAX) {
error_set(errp, QERR_INVALID_PARAMETER_VALUE, name ? name : "null",
"int16_t");
return;
}
*obj = value;
}
}
}
void visit_type_int32(Visitor *v, int32_t *obj, const char *name, Error **errp)
{
int64_t value;
if (!error_is_set(errp)) {
if (v->type_int32) {
v->type_int32(v, obj, name, errp);
} else {
value = *obj;
v->type_int(v, &value, name, errp);
if (value < INT32_MIN || value > INT32_MAX) {
error_set(errp, QERR_INVALID_PARAMETER_VALUE, name ? name : "null",
"int32_t");
return;
}
*obj = value;
}
}
}
void visit_type_int64(Visitor *v, int64_t *obj, const char *name, Error **errp)
{
if (!error_is_set(errp)) {
if (v->type_int64) {
v->type_int64(v, obj, name, errp);
} else {
v->type_int(v, obj, name, errp);
}
}
}
void visit_type_bool(Visitor *v, bool *obj, const char *name, Error **errp)
{
if (!error_is_set(errp)) {

16
qapi/qapi-visit-core.h
View File

@ -52,6 +52,14 @@ struct Visitor
void (*start_handle)(Visitor *v, void **obj, const char *kind,
const char *name, Error **errp);
void (*end_handle)(Visitor *v, Error **errp);
void (*type_uint8)(Visitor *v, uint8_t *obj, const char *name, Error **errp);
void (*type_uint16)(Visitor *v, uint16_t *obj, const char *name, Error **errp);
void (*type_uint32)(Visitor *v, uint32_t *obj, const char *name, Error **errp);
void (*type_uint64)(Visitor *v, uint64_t *obj, const char *name, Error **errp);
void (*type_int8)(Visitor *v, int8_t *obj, const char *name, Error **errp);
void (*type_int16)(Visitor *v, int16_t *obj, const char *name, Error **errp);
void (*type_int32)(Visitor *v, int32_t *obj, const char *name, Error **errp);
void (*type_int64)(Visitor *v, int64_t *obj, const char *name, Error **errp);
};
void visit_start_handle(Visitor *v, void **obj, const char *kind,
@ -69,6 +77,14 @@ void visit_end_optional(Visitor *v, Error **errp);
void visit_type_enum(Visitor *v, int *obj, const char *strings[],
const char *kind, const char *name, Error **errp);
void visit_type_int(Visitor *v, int64_t *obj, const char *name, Error **errp);
void visit_type_uint8(Visitor *v, uint8_t *obj, const char *name, Error **errp);
void visit_type_uint16(Visitor *v, uint16_t *obj, const char *name, Error **errp);
void visit_type_uint32(Visitor *v, uint32_t *obj, const char *name, Error **errp);
void visit_type_uint64(Visitor *v, uint64_t *obj, const char *name, Error **errp);
void visit_type_int8(Visitor *v, int8_t *obj, const char *name, Error **errp);
void visit_type_int16(Visitor *v, int16_t *obj, const char *name, Error **errp);
void visit_type_int32(Visitor *v, int32_t *obj, const char *name, Error **errp);
void visit_type_int64(Visitor *v, int64_t *obj, const char *name, Error **errp);
void visit_type_bool(Visitor *v, bool *obj, const char *name, Error **errp);
void visit_type_str(Visitor *v, char **obj, const char *name, Error **errp);
void visit_type_number(Visitor *v, double *obj, const char *name, Error **errp);