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Merge remote-tracking branch 'bonzini/qdev-props-for-anthony' into staging 

* bonzini/qdev-props-for-anthony: (25 commits)
  qdev: remove unused fields from PropertyInfo
  qdev: initialize properties via QOM
  qdev: inline qdev_prop_set into qdev_prop_set_ptr
  qdev: access properties via QOM
  qdev: fix off-by-one
  qdev: let QOM free properties
  qdev: remove parse/print methods for pointer properties
  qdev: make the non-legacy pci address property accept an integer
  qdev: remove parse/print methods for mac properties
  qdev: remove print/parse methods from LostTickPolicy properties
  qdev: remove parse method for string properties
  qdev: allow reusing get/set for legacy property
  qdev: remove direct calls to print/parse
  qom: add property get/set wrappers for links
  qom: fix canonical paths vs. interfaces
  qom: use object_resolve_path_type for links
  qom: add object_resolve_path_type
  qom: fix off-by-one
  qom: add property get/set wrappers for C types
  qom: add QObject-based property get/set wrappers
  ...
This commit is contained in:
Anthony Liguori 2012-02-08 07:24:37 -06:00
parent dc717bfd05 a3d4a1b047
commit a642153013
14 changed files with 832 additions and 413 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
hw/qdev-addr.c
View File

@ -61,8 +61,6 @@ static void set_taddr(Object *obj, Visitor *v, void *opaque,
PropertyInfo qdev_prop_taddr = {
.name = "taddr",
.type = PROP_TYPE_TADDR,
.size = sizeof(target_phys_addr_t),
.parse = parse_taddr,
.print = print_taddr,
.get = get_taddr,
@ -71,5 +69,8 @@ PropertyInfo qdev_prop_taddr = {
void qdev_prop_set_taddr(DeviceState *dev, const char *name, target_phys_addr_t value)
{
qdev_prop_set(dev, name, &value, PROP_TYPE_TADDR);
Error *errp = NULL;
object_property_set_int(OBJECT(dev), value, name, &errp);
assert(!errp);
}

30
hw/qdev-monitor.c
View File

@ -485,22 +485,26 @@ static void qbus_print(Monitor *mon, BusState *bus, int indent);
static void qdev_print_props(Monitor *mon, DeviceState *dev, Property *props,
const char *prefix, int indent)
{
char buf[64];
if (!props)
return;
while (props->name) {
/*
* TODO Properties without a print method are just for dirty
* hacks. qdev_prop_ptr is the only such PropertyInfo. It's
* marked for removal. The test props->info->print should be
* removed along with it.
*/
if (props->info->print) {
props->info->print(dev, props, buf, sizeof(buf));
qdev_printf("%s-prop: %s = %s\n", prefix, props->name, buf);
for (; props->name; props++) {
Error *err = NULL;
char *value;
char *legacy_name = g_strdup_printf("legacy-%s", props->name);
if (object_property_get_type(OBJECT(dev), legacy_name, NULL)) {
value = object_property_get_str(OBJECT(dev), legacy_name, &err);
} else {
value = object_property_get_str(OBJECT(dev), props->name, &err);
}
props++;
g_free(legacy_name);
if (err) {
error_free(err);
continue;
}
qdev_printf("%s-prop: %s = %s\n", prefix, props->name,
value && *value ? value : "<null>");
g_free(value);
}
}

526
hw/qdev-properties.c
View File

@ -12,7 +12,7 @@ void *qdev_get_prop_ptr(DeviceState *dev, Property *prop)
static uint32_t qdev_get_prop_mask(Property *prop)
{
assert(prop->info->type == PROP_TYPE_BIT);
assert(prop->info == &qdev_prop_bit);
return 0x1 << prop->bitnr;
}
@ -26,17 +26,6 @@ static void bit_prop_set(DeviceState *dev, Property *props, bool val)
*p &= ~mask;
}
static void qdev_prop_cpy(DeviceState *dev, Property *props, void *src)
{
if (props->info->type == PROP_TYPE_BIT) {
bool *defval = src;
bit_prop_set(dev, props, *defval);
} else {
char *dst = qdev_get_prop_ptr(dev, props);
memcpy(dst, src, props->info->size);
}
}
/* Bit */
static int parse_bit(DeviceState *dev, Property *prop, const char *str)
{
@ -90,8 +79,6 @@ static void set_bit(Object *obj, Visitor *v, void *opaque,
PropertyInfo qdev_prop_bit = {
.name = "boolean",
.legacy_name = "on/off",
.type = PROP_TYPE_BIT,
.size = sizeof(uint32_t),
.parse = parse_bit,
.print = print_bit,
.get = get_bit,
@ -151,7 +138,7 @@ static void set_int8(Object *obj, Visitor *v, void *opaque,
error_propagate(errp, local_err);
return;
}
if (value > prop->info->min && value <= prop->info->max) {
if (value >= prop->info->min && value <= prop->info->max) {
*ptr = value;
} else {
error_set(errp, QERR_PROPERTY_VALUE_OUT_OF_RANGE,
@ -162,8 +149,6 @@ static void set_int8(Object *obj, Visitor *v, void *opaque,
PropertyInfo qdev_prop_uint8 = {
.name = "uint8",
.type = PROP_TYPE_UINT8,
.size = sizeof(uint8_t),
.parse = parse_uint8,
.print = print_uint8,
.get = get_int8,
@ -196,8 +181,6 @@ static int print_hex8(DeviceState *dev, Property *prop, char *dest, size_t len)
PropertyInfo qdev_prop_hex8 = {
.name = "uint8",
.legacy_name = "hex8",
.type = PROP_TYPE_UINT8,
.size = sizeof(uint8_t),
.parse = parse_hex8,
.print = print_hex8,
.get = get_int8,
@ -259,7 +242,7 @@ static void set_int16(Object *obj, Visitor *v, void *opaque,
error_propagate(errp, local_err);
return;
}
if (value > prop->info->min && value <= prop->info->max) {
if (value >= prop->info->min && value <= prop->info->max) {
*ptr = value;
} else {
error_set(errp, QERR_PROPERTY_VALUE_OUT_OF_RANGE,
@ -270,8 +253,6 @@ static void set_int16(Object *obj, Visitor *v, void *opaque,
PropertyInfo qdev_prop_uint16 = {
.name = "uint16",
.type = PROP_TYPE_UINT16,
.size = sizeof(uint16_t),
.parse = parse_uint16,
.print = print_uint16,
.get = get_int16,
@ -333,7 +314,7 @@ static void set_int32(Object *obj, Visitor *v, void *opaque,
error_propagate(errp, local_err);
return;
}
if (value > prop->info->min && value <= prop->info->max) {
if (value >= prop->info->min && value <= prop->info->max) {
*ptr = value;
} else {
error_set(errp, QERR_PROPERTY_VALUE_OUT_OF_RANGE,
@ -344,8 +325,6 @@ static void set_int32(Object *obj, Visitor *v, void *opaque,
PropertyInfo qdev_prop_uint32 = {
.name = "uint32",
.type = PROP_TYPE_UINT32,
.size = sizeof(uint32_t),
.parse = parse_uint32,
.print = print_uint32,
.get = get_int32,
@ -375,8 +354,6 @@ static int print_int32(DeviceState *dev, Property *prop, char *dest, size_t len)
PropertyInfo qdev_prop_int32 = {
.name = "int32",
.type = PROP_TYPE_INT32,
.size = sizeof(int32_t),
.parse = parse_int32,
.print = print_int32,
.get = get_int32,
@ -409,8 +386,6 @@ static int print_hex32(DeviceState *dev, Property *prop, char *dest, size_t len)
PropertyInfo qdev_prop_hex32 = {
.name = "uint32",
.legacy_name = "hex32",
.type = PROP_TYPE_UINT32,
.size = sizeof(uint32_t),
.parse = parse_hex32,
.print = print_hex32,
.get = get_int32,
@ -468,8 +443,6 @@ static void set_int64(Object *obj, Visitor *v, void *opaque,
PropertyInfo qdev_prop_uint64 = {
.name = "uint64",
.type = PROP_TYPE_UINT64,
.size = sizeof(uint64_t),
.parse = parse_uint64,
.print = print_uint64,
.get = get_int64,
@ -500,8 +473,6 @@ static int print_hex64(DeviceState *dev, Property *prop, char *dest, size_t len)
PropertyInfo qdev_prop_hex64 = {
.name = "uint64",
.legacy_name = "hex64",
.type = PROP_TYPE_UINT64,
.size = sizeof(uint64_t),
.parse = parse_hex64,
.print = print_hex64,
.get = get_int64,
@ -510,19 +481,10 @@ PropertyInfo qdev_prop_hex64 = {
/* --- string --- */
static int parse_string(DeviceState *dev, Property *prop, const char *str)
static void release_string(Object *obj, const char *name, void *opaque)
{
char **ptr = qdev_get_prop_ptr(dev, prop);
if (*ptr)
g_free(*ptr);
*ptr = g_strdup(str);
return 0;
}
static void free_string(DeviceState *dev, Property *prop)
{
g_free(*(char **)qdev_get_prop_ptr(dev, prop));
Property *prop = opaque;
g_free(*(char **)qdev_get_prop_ptr(DEVICE(obj), prop));
}
static int print_string(DeviceState *dev, Property *prop, char *dest, size_t len)
@ -579,20 +541,16 @@ static void set_string(Object *obj, Visitor *v, void *opaque,
PropertyInfo qdev_prop_string = {
.name = "string",
.type = PROP_TYPE_STRING,
.size = sizeof(char*),
.parse = parse_string,
.print = print_string,
.free = free_string,
.release = release_string,
.get = get_string,
.set = set_string,
};
/* --- drive --- */
static int parse_drive(DeviceState *dev, Property *prop, const char *str)
static int parse_drive(DeviceState *dev, const char *str, void **ptr)
{
BlockDriverState **ptr = qdev_get_prop_ptr(dev, prop);
BlockDriverState *bs;
bs = bdrv_find(str);
@ -604,8 +562,10 @@ static int parse_drive(DeviceState *dev, Property *prop, const char *str)
return 0;
}
static void free_drive(DeviceState *dev, Property *prop)
static void release_drive(Object *obj, const char *name, void *opaque)
{
DeviceState *dev = DEVICE(obj);
Property *prop = opaque;
BlockDriverState **ptr = qdev_get_prop_ptr(dev, prop);
if (*ptr) {
@ -614,35 +574,30 @@ static void free_drive(DeviceState *dev, Property *prop)
}
}
static int print_drive(DeviceState *dev, Property *prop, char *dest, size_t len)
static const char *print_drive(void *ptr)
{
BlockDriverState **ptr = qdev_get_prop_ptr(dev, prop);
return snprintf(dest, len, "%s",
*ptr ? bdrv_get_device_name(*ptr) : "<null>");
return bdrv_get_device_name(ptr);
}
static void get_generic(Object *obj, Visitor *v, void *opaque,
const char *name, Error **errp)
{
DeviceState *dev = DEVICE(obj);
Property *prop = opaque;
void **ptr = qdev_get_prop_ptr(dev, prop);
char buffer[1024];
char *p = buffer;
buffer[0] = 0;
if (*ptr) {
prop->info->print(dev, prop, buffer, sizeof(buffer));
}
visit_type_str(v, &p, name, errp);
}
static void set_generic(Object *obj, Visitor *v, void *opaque,
static void get_pointer(Object *obj, Visitor *v, Property *prop,
const char *(*print)(void *ptr),
const char *name, Error **errp)
{
DeviceState *dev = DEVICE(obj);
void **ptr = qdev_get_prop_ptr(dev, prop);
char *p;
p = (char *) (*ptr ? print(*ptr) : "");
visit_type_str(v, &p, name, errp);
}
static void set_pointer(Object *obj, Visitor *v, Property *prop,
int (*parse)(DeviceState *dev, const char *str, void **ptr),
const char *name, Error **errp)
{
DeviceState *dev = DEVICE(obj);
Property *prop = opaque;
Error *local_err = NULL;
void **ptr = qdev_get_prop_ptr(dev, prop);
char *str;
int ret;
@ -661,41 +616,50 @@ static void set_generic(Object *obj, Visitor *v, void *opaque,
error_set_from_qdev_prop_error(errp, EINVAL, dev, prop, str);
return;
}
ret = prop->info->parse(dev, prop, str);
ret = parse(dev, str, ptr);
error_set_from_qdev_prop_error(errp, ret, dev, prop, str);
g_free(str);
}
static void get_drive(Object *obj, Visitor *v, void *opaque,
const char *name, Error **errp)
{
get_pointer(obj, v, opaque, print_drive, name, errp);
}
static void set_drive(Object *obj, Visitor *v, void *opaque,
const char *name, Error **errp)
{
set_pointer(obj, v, opaque, parse_drive, name, errp);
}
PropertyInfo qdev_prop_drive = {
.name = "drive",
.type = PROP_TYPE_DRIVE,
.size = sizeof(BlockDriverState *),
.parse = parse_drive,
.print = print_drive,
.get = get_generic,
.set = set_generic,
.free = free_drive,
.get = get_drive,
.set = set_drive,
.release = release_drive,
};
/* --- character device --- */
static int parse_chr(DeviceState *dev, Property *prop, const char *str)
static int parse_chr(DeviceState *dev, const char *str, void **ptr)
{
CharDriverState **ptr = qdev_get_prop_ptr(dev, prop);
*ptr = qemu_chr_find(str);
if (*ptr == NULL) {
CharDriverState *chr = qemu_chr_find(str);
if (chr == NULL) {
return -ENOENT;
}
if ((*ptr)->avail_connections < 1) {
if (chr->avail_connections < 1) {
return -EEXIST;
}
--(*ptr)->avail_connections;
*ptr = chr;
--chr->avail_connections;
return 0;
}
static void free_chr(DeviceState *dev, Property *prop)
static void release_chr(Object *obj, const char *name, void *opaque)
{
DeviceState *dev = DEVICE(obj);
Property *prop = opaque;
CharDriverState **ptr = qdev_get_prop_ptr(dev, prop);
if (*ptr) {
@ -704,62 +668,71 @@ static void free_chr(DeviceState *dev, Property *prop)
}
static int print_chr(DeviceState *dev, Property *prop, char *dest, size_t len)
static const char *print_chr(void *ptr)
{
CharDriverState **ptr = qdev_get_prop_ptr(dev, prop);
CharDriverState *chr = ptr;
if (*ptr && (*ptr)->label) {
return snprintf(dest, len, "%s", (*ptr)->label);
} else {
return snprintf(dest, len, "<null>");
}
return chr->label ? chr->label : "";
}
static void get_chr(Object *obj, Visitor *v, void *opaque,
const char *name, Error **errp)
{
get_pointer(obj, v, opaque, print_chr, name, errp);
}
static void set_chr(Object *obj, Visitor *v, void *opaque,
const char *name, Error **errp)
{
set_pointer(obj, v, opaque, parse_chr, name, errp);
}
PropertyInfo qdev_prop_chr = {
.name = "chr",
.type = PROP_TYPE_CHR,
.size = sizeof(CharDriverState*),
.parse = parse_chr,
.print = print_chr,
.get = get_generic,
.set = set_generic,
.free = free_chr,
.get = get_chr,
.set = set_chr,
.release = release_chr,
};
/* --- netdev device --- */
static int parse_netdev(DeviceState *dev, Property *prop, const char *str)
static int parse_netdev(DeviceState *dev, const char *str, void **ptr)
{
VLANClientState **ptr = qdev_get_prop_ptr(dev, prop);
VLANClientState *netdev = qemu_find_netdev(str);
*ptr = qemu_find_netdev(str);
if (*ptr == NULL)
if (netdev == NULL) {
return -ENOENT;
if ((*ptr)->peer) {
}
if (netdev->peer) {
return -EEXIST;
}
*ptr = netdev;
return 0;
}
static int print_netdev(DeviceState *dev, Property *prop, char *dest, size_t len)
static const char *print_netdev(void *ptr)
{
VLANClientState **ptr = qdev_get_prop_ptr(dev, prop);
VLANClientState *netdev = ptr;
if (*ptr && (*ptr)->name) {
return snprintf(dest, len, "%s", (*ptr)->name);
} else {
return snprintf(dest, len, "<null>");
}
return netdev->name ? netdev->name : "";
}
static void get_netdev(Object *obj, Visitor *v, void *opaque,
const char *name, Error **errp)
{
get_pointer(obj, v, opaque, print_netdev, name, errp);
}
static void set_netdev(Object *obj, Visitor *v, void *opaque,
const char *name, Error **errp)
{
set_pointer(obj, v, opaque, parse_netdev, name, errp);
}
PropertyInfo qdev_prop_netdev = {
.name = "netdev",
.type = PROP_TYPE_NETDEV,
.size = sizeof(VLANClientState*),
.parse = parse_netdev,
.print = print_netdev,
.get = get_generic,
.set = set_generic,
.get = get_netdev,
.set = set_netdev,
};
/* --- vlan --- */
@ -835,8 +808,6 @@ static void set_vlan(Object *obj, Visitor *v, void *opaque,
PropertyInfo qdev_prop_vlan = {
.name = "vlan",
.type = PROP_TYPE_VLAN,
.size = sizeof(VLANClientState*),
.parse = parse_vlan,
.print = print_vlan,
.get = get_vlan,
@ -848,8 +819,6 @@ PropertyInfo qdev_prop_vlan = {
/* Not a proper property, just for dirty hacks. TODO Remove it! */
PropertyInfo qdev_prop_ptr = {
.name = "ptr",
.type = PROP_TYPE_PTR,
.size = sizeof(void*),
};
/* --- mac address --- */
@ -859,95 +828,114 @@ PropertyInfo qdev_prop_ptr = {
* 01:02:03:04:05:06
* 01-02-03-04-05-06
*/
static int parse_mac(DeviceState *dev, Property *prop, const char *str)
static void get_mac(Object *obj, Visitor *v, void *opaque,
const char *name, Error **errp)
{
DeviceState *dev = DEVICE(obj);
Property *prop = opaque;
MACAddr *mac = qdev_get_prop_ptr(dev, prop);
char buffer[2 * 6 + 5 + 1];
char *p = buffer;
snprintf(buffer, sizeof(buffer), "%02x:%02x:%02x:%02x:%02x:%02x",
mac->a[0], mac->a[1], mac->a[2],
mac->a[3], mac->a[4], mac->a[5]);
visit_type_str(v, &p, name, errp);
}
static void set_mac(Object *obj, Visitor *v, void *opaque,
const char *name, Error **errp)
{
DeviceState *dev = DEVICE(obj);
Property *prop = opaque;
MACAddr *mac = qdev_get_prop_ptr(dev, prop);
Error *local_err = NULL;
int i, pos;
char *p;
char *str, *p;
if (dev->state != DEV_STATE_CREATED) {
error_set(errp, QERR_PERMISSION_DENIED);
return;
}
visit_type_str(v, &str, name, &local_err);
if (local_err) {
error_propagate(errp, local_err);
return;
}
for (i = 0, pos = 0; i < 6; i++, pos += 3) {
if (!qemu_isxdigit(str[pos]))
return -EINVAL;
goto inval;
if (!qemu_isxdigit(str[pos+1]))
return -EINVAL;
goto inval;
if (i == 5) {
if (str[pos+2] != '\0')
return -EINVAL;
goto inval;
} else {
if (str[pos+2] != ':' && str[pos+2] != '-')
return -EINVAL;
goto inval;
}
mac->a[i] = strtol(str+pos, &p, 16);
}
return 0;
}
return;
static int print_mac(DeviceState *dev, Property *prop, char *dest, size_t len)
{
MACAddr *mac = qdev_get_prop_ptr(dev, prop);
return snprintf(dest, len, "%02x:%02x:%02x:%02x:%02x:%02x",
mac->a[0], mac->a[1], mac->a[2],
mac->a[3], mac->a[4], mac->a[5]);
inval:
error_set_from_qdev_prop_error(errp, EINVAL, dev, prop, str);
}
PropertyInfo qdev_prop_macaddr = {
.name = "macaddr",
.type = PROP_TYPE_MACADDR,
.size = sizeof(MACAddr),
.parse = parse_mac,
.print = print_mac,
.get = get_generic,
.set = set_generic,
.get = get_mac,
.set = set_mac,
};
/* --- lost tick policy --- */
static const struct {
const char *name;
LostTickPolicy code;
} lost_tick_policy_table[] = {
{ .name = "discard", .code = LOST_TICK_DISCARD },
{ .name = "delay", .code = LOST_TICK_DELAY },
{ .name = "merge", .code = LOST_TICK_MERGE },
{ .name = "slew", .code = LOST_TICK_SLEW },
static const char *lost_tick_policy_table[LOST_TICK_MAX+1] = {
[LOST_TICK_DISCARD] = "discard",
[LOST_TICK_DELAY] = "delay",
[LOST_TICK_MERGE] = "merge",
[LOST_TICK_SLEW] = "slew",
[LOST_TICK_MAX] = NULL,
};
static int parse_lost_tick_policy(DeviceState *dev, Property *prop,
const char *str)
{
LostTickPolicy *ptr = qdev_get_prop_ptr(dev, prop);
int i;
QEMU_BUILD_BUG_ON(sizeof(LostTickPolicy) != sizeof(int));
for (i = 0; i < ARRAY_SIZE(lost_tick_policy_table); i++) {
if (!strcasecmp(str, lost_tick_policy_table[i].name)) {
*ptr = lost_tick_policy_table[i].code;
break;
}
}
if (i == ARRAY_SIZE(lost_tick_policy_table)) {
return -EINVAL;
}
return 0;
static void get_enum(Object *obj, Visitor *v, void *opaque,
const char *name, Error **errp)
{
DeviceState *dev = DEVICE(obj);
Property *prop = opaque;
int *ptr = qdev_get_prop_ptr(dev, prop);
visit_type_enum(v, ptr, prop->info->enum_table,
prop->info->name, prop->name, errp);
}
static int print_lost_tick_policy(DeviceState *dev, Property *prop, char *dest,
size_t len)
static void set_enum(Object *obj, Visitor *v, void *opaque,
const char *name, Error **errp)
{
LostTickPolicy *ptr = qdev_get_prop_ptr(dev, prop);
DeviceState *dev = DEVICE(obj);
Property *prop = opaque;
int *ptr = qdev_get_prop_ptr(dev, prop);
return snprintf(dest, len, "%s", lost_tick_policy_table[*ptr].name);
if (dev->state != DEV_STATE_CREATED) {
error_set(errp, QERR_PERMISSION_DENIED);
return;
}
visit_type_enum(v, ptr, prop->info->enum_table,
prop->info->name, prop->name, errp);
}
PropertyInfo qdev_prop_losttickpolicy = {
.name = "lost_tick_policy",
.type = PROP_TYPE_LOSTTICKPOLICY,
.size = sizeof(LostTickPolicy),
.parse = parse_lost_tick_policy,
.print = print_lost_tick_policy,
.get = get_generic,
.set = set_generic,
.name = "LostTickPolicy",
.enum_table = lost_tick_policy_table,
.get = get_enum,
.set = set_enum,
};
/* --- pci address --- */
@ -987,30 +975,18 @@ static int print_pci_devfn(DeviceState *dev, Property *prop, char *dest, size_t
}
}
static void get_pci_devfn(Object *obj, Visitor *v, void *opaque,
const char *name, Error **errp)
{
DeviceState *dev = DEVICE(obj);
Property *prop = opaque;
uint32_t *ptr = qdev_get_prop_ptr(dev, prop);
char buffer[32];
char *p = buffer;
buffer[0] = 0;
if (*ptr != -1) {
snprintf(buffer, sizeof(buffer), "%02x.%x", *ptr >> 3, *ptr & 7);
}
visit_type_str(v, &p, name, errp);
}
PropertyInfo qdev_prop_pci_devfn = {
.name = "pci-devfn",
.type = PROP_TYPE_UINT32,
.size = sizeof(uint32_t),
.name = "int32",
.legacy_name = "pci-devfn",
.parse = parse_pci_devfn,
.print = print_pci_devfn,
.get = get_pci_devfn,
.set = set_generic,
.get = get_int32,
.set = set_int32,
/* FIXME: this should be -1...255, but the address is stored
* into an uint32_t rather than int32_t.
*/
.min = 0,
.max = 0xFFFFFFFFULL,
};
/* --- public helpers --- */
@ -1073,24 +1049,18 @@ void error_set_from_qdev_prop_error(Error **errp, int ret, DeviceState *dev,
int qdev_prop_parse(DeviceState *dev, const char *name, const char *value)
{
Property *prop;
int ret;
char *legacy_name;
Error *err = NULL;
prop = qdev_prop_find(dev, name);
/*
* TODO Properties without a parse method are just for dirty
* hacks. qdev_prop_ptr is the only such PropertyInfo. It's
* marked for removal. The test !prop->info->parse should be
* removed along with it.
*/
if (!prop || !prop->info->parse) {
qerror_report(QERR_PROPERTY_NOT_FOUND, object_get_typename(OBJECT(dev)), name);
return -1;
legacy_name = g_strdup_printf("legacy-%s", name);
if (object_property_get_type(OBJECT(dev), legacy_name, NULL)) {
object_property_set_str(OBJECT(dev), value, legacy_name, &err);
} else {
object_property_set_str(OBJECT(dev), value, name, &err);
}
ret = prop->info->parse(dev, prop, value);
if (ret < 0) {
Error *err;
error_set_from_qdev_prop_error(&err, ret, dev, prop, value);
g_free(legacy_name);
if (err) {
qerror_report_err(err);
error_free(err);
return -1;
@ -1098,72 +1068,65 @@ int qdev_prop_parse(DeviceState *dev, const char *name, const char *value)
return 0;
}
void qdev_prop_set(DeviceState *dev, const char *name, void *src, enum PropertyType type)
{
Property *prop;
prop = qdev_prop_find(dev, name);
if (!prop) {
fprintf(stderr, "%s: property \"%s.%s\" not found\n",
__FUNCTION__, object_get_typename(OBJECT(dev)), name);
abort();
}
if (prop->info->type != type) {
fprintf(stderr, "%s: property \"%s.%s\" type mismatch\n",
__FUNCTION__, object_get_typename(OBJECT(dev)), name);
abort();
}
qdev_prop_cpy(dev, prop, src);
}
void qdev_prop_set_bit(DeviceState *dev, const char *name, bool value)
{
qdev_prop_set(dev, name, &value, PROP_TYPE_BIT);
Error *errp = NULL;
object_property_set_bool(OBJECT(dev), value, name, &errp);
assert(!errp);
}
void qdev_prop_set_uint8(DeviceState *dev, const char *name, uint8_t value)
{
qdev_prop_set(dev, name, &value, PROP_TYPE_UINT8);
Error *errp = NULL;
object_property_set_int(OBJECT(dev), value, name, &errp);
assert(!errp);
}
void qdev_prop_set_uint16(DeviceState *dev, const char *name, uint16_t value)
{
qdev_prop_set(dev, name, &value, PROP_TYPE_UINT16);
Error *errp = NULL;
object_property_set_int(OBJECT(dev), value, name, &errp);
assert(!errp);
}
void qdev_prop_set_uint32(DeviceState *dev, const char *name, uint32_t value)
{
qdev_prop_set(dev, name, &value, PROP_TYPE_UINT32);
Error *errp = NULL;
object_property_set_int(OBJECT(dev), value, name, &errp);
assert(!errp);
}
void qdev_prop_set_int32(DeviceState *dev, const char *name, int32_t value)
{
qdev_prop_set(dev, name, &value, PROP_TYPE_INT32);
Error *errp = NULL;
object_property_set_int(OBJECT(dev), value, name, &errp);
assert(!errp);
}
void qdev_prop_set_uint64(DeviceState *dev, const char *name, uint64_t value)
{
qdev_prop_set(dev, name, &value, PROP_TYPE_UINT64);
Error *errp = NULL;
object_property_set_int(OBJECT(dev), value, name, &errp);
assert(!errp);
}
void qdev_prop_set_string(DeviceState *dev, const char *name, char *value)
{
qdev_prop_set(dev, name, &value, PROP_TYPE_STRING);
Error *errp = NULL;
object_property_set_str(OBJECT(dev), value, name, &errp);
assert(!errp);
}
int qdev_prop_set_drive(DeviceState *dev, const char *name, BlockDriverState *value)
{
int res;
res = bdrv_attach_dev(value, dev);
if (res < 0) {
error_report("Can't attach drive %s to %s.%s: %s",
bdrv_get_device_name(value),
dev->id ? dev->id : object_get_typename(OBJECT(dev)),
name, strerror(-res));
Error *errp = NULL;
object_property_set_str(OBJECT(dev), bdrv_get_device_name(value),
name, &errp);
if (errp) {
qerror_report_err(errp);
error_free(errp);
return -1;
}
qdev_prop_set(dev, name, &value, PROP_TYPE_DRIVE);
return 0;
}
@ -1175,44 +1138,79 @@ void qdev_prop_set_drive_nofail(DeviceState *dev, const char *name, BlockDriverS
}
void qdev_prop_set_chr(DeviceState *dev, const char *name, CharDriverState *value)
{
qdev_prop_set(dev, name, &value, PROP_TYPE_CHR);
Error *errp = NULL;
assert(value->label);
object_property_set_str(OBJECT(dev), value->label, name, &errp);
assert(!errp);
}
void qdev_prop_set_netdev(DeviceState *dev, const char *name, VLANClientState *value)
{
qdev_prop_set(dev, name, &value, PROP_TYPE_NETDEV);
Error *errp = NULL;
assert(value->name);
object_property_set_str(OBJECT(dev), value->name, name, &errp);
assert(!errp);
}
void qdev_prop_set_vlan(DeviceState *dev, const char *name, VLANState *value)
{
qdev_prop_set(dev, name, &value, PROP_TYPE_VLAN);
Error *errp = NULL;
object_property_set_int(OBJECT(dev), value ? value->id : -1, name, &errp);
assert(!errp);
}
void qdev_prop_set_macaddr(DeviceState *dev, const char *name, uint8_t *value)
{
qdev_prop_set(dev, name, value, PROP_TYPE_MACADDR);
Error *errp = NULL;
char str[2 * 6 + 5 + 1];
snprintf(str, sizeof(str), "%02x:%02x:%02x:%02x:%02x:%02x",
value[0], value[1], value[2], value[3], value[4], value[5]);
object_property_set_str(OBJECT(dev), str, name, &errp);
assert(!errp);
}
void qdev_prop_set_losttickpolicy(DeviceState *dev, const char *name,
LostTickPolicy *value)
void qdev_prop_set_enum(DeviceState *dev, const char *name, int value)
{
qdev_prop_set(dev, name, value, PROP_TYPE_LOSTTICKPOLICY);
Property *prop;
Error *errp = NULL;
prop = qdev_prop_find(dev, name);
object_property_set_str(OBJECT(dev), prop->info->enum_table[value],
name, &errp);
assert(!errp);
}
void qdev_prop_set_ptr(DeviceState *dev, const char *name, void *value)
{
qdev_prop_set(dev, name, &value, PROP_TYPE_PTR);
Property *prop;
void **ptr;
prop = qdev_prop_find(dev, name);
assert(prop && prop->info == &qdev_prop_ptr);
ptr = qdev_get_prop_ptr(dev, prop);
*ptr = value;
}
void qdev_prop_set_defaults(DeviceState *dev, Property *props)
{
Object *obj = OBJECT(dev);
if (!props)
return;
while (props->name) {
if (props->defval) {
qdev_prop_cpy(dev, props, props->defval);
for (; props->name; props++) {
Error *errp = NULL;
if (props->qtype == QTYPE_NONE) {
continue;
}
props++;
if (props->qtype == QTYPE_QBOOL) {
object_property_set_bool(obj, props->defval, props->name, &errp);
} else if (props->info->enum_table) {
object_property_set_str(obj, props->info->enum_table[props->defval],
props->name, &errp);
} else if (props->qtype == QTYPE_QINT) {
object_property_set_int(obj, props->defval, props->name, &errp);
}
assert(!errp);
}
}

32
hw/qdev.c
View File

@ -86,11 +86,11 @@ void qdev_set_parent_bus(DeviceState *dev, BusState *bus)
dev->parent_bus = bus;
QTAILQ_INSERT_HEAD(&bus->children, dev, sibling);
qdev_prop_set_defaults(dev, dev->parent_bus->info->props);
for (prop = qdev_get_bus_info(dev)->props; prop && prop->name; prop++) {
qdev_property_add_legacy(dev, prop, NULL);
qdev_property_add_static(dev, prop, NULL);
}
qdev_prop_set_defaults(dev, dev->parent_bus->info->props);
}
/* Create a new device. This only initializes the device state structure
@ -550,21 +550,24 @@ static void qdev_set_legacy_property(Object *obj, Visitor *v, void *opaque,
* Do not use this is new code! Properties added through this interface will
* be given names and types in the "legacy" namespace.
*
* Legacy properties are always processed as strings. The format of the string
* depends on the property type.
* Legacy properties are string versions of other OOM properties. The format
* of the string depends on the property type.
*/
void qdev_property_add_legacy(DeviceState *dev, Property *prop,
Error **errp)
{
gchar *name, *type;
if (!prop->info->print && !prop->info->parse) {
return;
}
name = g_strdup_printf("legacy-%s", prop->name);
type = g_strdup_printf("legacy<%s>",
prop->info->legacy_name ?: prop->info->name);
object_property_add(OBJECT(dev), name, type,
prop->info->print ? qdev_get_legacy_property : NULL,
prop->info->parse ? qdev_set_legacy_property : NULL,
prop->info->print ? qdev_get_legacy_property : prop->info->get,
prop->info->parse ? qdev_set_legacy_property : prop->info->set,
NULL,
prop, errp);
@ -581,9 +584,18 @@ void qdev_property_add_legacy(DeviceState *dev, Property *prop,
void qdev_property_add_static(DeviceState *dev, Property *prop,
Error **errp)
{
/*
* TODO qdev_prop_ptr does not have getters or setters. It must
* go now that it can be replaced with links. The test should be
* removed along with it: all static properties are read/write.
*/
if (!prop->info->get && !prop->info->set) {
return;
}
object_property_add(OBJECT(dev), prop->name, prop->info->name,
prop->info->get, prop->info->set,
NULL,
prop->info->release,
prop, errp);
}
@ -600,13 +612,13 @@ static void device_initfn(Object *obj)
dev->instance_id_alias = -1;
dev->state = DEV_STATE_CREATED;
qdev_prop_set_defaults(dev, qdev_get_props(dev));
for (prop = qdev_get_props(dev); prop && prop->name; prop++) {
qdev_property_add_legacy(dev, prop, NULL);
qdev_property_add_static(dev, prop, NULL);
}
object_property_add_str(OBJECT(dev), "type", qdev_get_type, NULL, NULL);
qdev_prop_set_defaults(dev, qdev_get_props(dev));
}
/* Unlink device from bus and free the structure. */
@ -614,7 +626,6 @@ static void device_finalize(Object *obj)
{
DeviceState *dev = DEVICE(obj);
BusState *bus;
Property *prop;
DeviceClass *dc = DEVICE_GET_CLASS(dev);
if (dev->state == DEV_STATE_INITIALIZED) {
@ -633,11 +644,6 @@ static void device_finalize(Object *obj)
}
}
QTAILQ_REMOVE(&dev->parent_bus->children, dev, sibling);
for (prop = qdev_get_props(dev); prop && prop->name; prop++) {
if (prop->info->free) {
prop->info->free(dev, prop);
}
}
}
void device_reset(DeviceState *dev)

39
hw/qdev.h
View File

@ -112,41 +112,22 @@ struct Property {
const char *name;
PropertyInfo *info;
int offset;
int bitnr;
void *defval;
};
enum PropertyType {
PROP_TYPE_UNSPEC = 0,
PROP_TYPE_UINT8,
PROP_TYPE_UINT16,
PROP_TYPE_UINT32,
PROP_TYPE_INT32,
PROP_TYPE_UINT64,
PROP_TYPE_TADDR,
PROP_TYPE_MACADDR,
PROP_TYPE_LOSTTICKPOLICY,
PROP_TYPE_DRIVE,
PROP_TYPE_CHR,
PROP_TYPE_STRING,
PROP_TYPE_NETDEV,
PROP_TYPE_VLAN,
PROP_TYPE_PTR,
PROP_TYPE_BIT,
uint8_t bitnr;
uint8_t qtype;
int64_t defval;
};
struct PropertyInfo {
const char *name;
const char *legacy_name;
size_t size;
enum PropertyType type;
const char **enum_table;
int64_t min;
int64_t max;
int (*parse)(DeviceState *dev, Property *prop, const char *str);
int (*print)(DeviceState *dev, Property *prop, char *dest, size_t len);
void (*free)(DeviceState *dev, Property *prop);
ObjectPropertyAccessor *get;
ObjectPropertyAccessor *set;
ObjectPropertyRelease *release;
};
typedef struct GlobalProperty {
@ -254,7 +235,8 @@ extern PropertyInfo qdev_prop_pci_devfn;
.info = &(_prop), \
.offset = offsetof(_state, _field) \
+ type_check(_type,typeof_field(_state, _field)), \
.defval = (_type[]) { _defval }, \
.qtype = QTYPE_QINT, \
.defval = (_type)_defval, \
}
#define DEFINE_PROP_BIT(_name, _state, _field, _bit, _defval) { \
.name = (_name), \
@ -262,7 +244,8 @@ extern PropertyInfo qdev_prop_pci_devfn;
.bitnr = (_bit), \
.offset = offsetof(_state, _field) \
+ type_check(uint32_t,typeof_field(_state, _field)), \
.defval = (bool[]) { (_defval) }, \
.qtype = QTYPE_QBOOL, \
.defval = (bool)_defval, \
}
#define DEFINE_PROP_UINT8(_n, _s, _f, _d) \
@ -309,7 +292,6 @@ extern PropertyInfo qdev_prop_pci_devfn;
void *qdev_get_prop_ptr(DeviceState *dev, Property *prop);
int qdev_prop_exists(DeviceState *dev, const char *name);
int qdev_prop_parse(DeviceState *dev, const char *name, const char *value);
void qdev_prop_set(DeviceState *dev, const char *name, void *src, enum PropertyType type);
void qdev_prop_set_bit(DeviceState *dev, const char *name, bool value);
void qdev_prop_set_uint8(DeviceState *dev, const char *name, uint8_t value);
void qdev_prop_set_uint16(DeviceState *dev, const char *name, uint16_t value);
@ -323,8 +305,7 @@ void qdev_prop_set_vlan(DeviceState *dev, const char *name, VLANState *value);
int qdev_prop_set_drive(DeviceState *dev, const char *name, BlockDriverState *value) QEMU_WARN_UNUSED_RESULT;
void qdev_prop_set_drive_nofail(DeviceState *dev, const char *name, BlockDriverState *value);
void qdev_prop_set_macaddr(DeviceState *dev, const char *name, uint8_t *value);
void qdev_prop_set_losttickpolicy(DeviceState *dev, const char *name,
LostTickPolicy *value);
void qdev_prop_set_enum(DeviceState *dev, const char *name, int value);
/* FIXME: Remove opaque pointer properties. */
void qdev_prop_set_ptr(DeviceState *dev, const char *name, void *value);
void qdev_prop_set_defaults(DeviceState *dev, Property *props);

217
include/qemu/object.h
View File

@ -55,6 +55,9 @@ typedef struct InterfaceInfo InterfaceInfo;
*
* #define TYPE_MY_DEVICE "my-device"
*
* // No new virtual functions: we can reuse the typedef for the
* // superclass.
* typedef DeviceClass MyDeviceClass;
* typedef struct MyDevice
* {
* DeviceState parent;
@ -88,8 +91,21 @@ typedef struct InterfaceInfo InterfaceInfo;
*
* Using object_new(), a new #Object derivative will be instantiated. You can
* cast an #Object to a subclass (or base-class) type using
* object_dynamic_cast(). You typically want to define a macro wrapper around
* object_dynamic_cast_assert() to make it easier to convert to a specific type.
* object_dynamic_cast(). You typically want to define macro wrappers around
* OBJECT_CHECK() and OBJECT_CLASS_CHECK() to make it easier to convert to a
* specific type:
*
* <example>
* <title>Typecasting macros</title>
* <programlisting>
* #define MY_DEVICE_GET_CLASS(obj) \
* OBJECT_GET_CLASS(MyDeviceClass, obj, TYPE_MY_DEVICE)
* #define MY_DEVICE_CLASS(klass) \
* OBJECT_CLASS_CHECK(MyDeviceClass, klass, TYPE_MY_DEVICE)
* #define MY_DEVICE(obj) \
* OBJECT_CHECK(MyDevice, obj, TYPE_MY_DEVICE)
* </programlisting>
* </example>
*
* # Class Initialization #
*
@ -108,7 +124,61 @@ typedef struct InterfaceInfo InterfaceInfo;
*
* Once all of the parent classes have been initialized, #TypeInfo::class_init
* is called to let the class being instantiated provide default initialize for
* it's virtual functions.
* it's virtual functions. Here is how the above example might be modified
* to introduce an overridden virtual function:
*
* <example>
* <title>Overriding a virtual function</title>
* <programlisting>
* #include "qdev.h"
*
* void my_device_class_init(ObjectClass *klass, void *class_data)
* {
* DeviceClass *dc = DEVICE_CLASS(klass);
* dc->reset = my_device_reset;
* }
*
* static TypeInfo my_device_info = {
* .name = TYPE_MY_DEVICE,
* .parent = TYPE_DEVICE,
* .instance_size = sizeof(MyDevice),
* .class_init = my_device_class_init,
* };
* </programlisting>
* </example>
*
* Introducing new virtual functions requires a class to define its own
* struct and to add a .class_size member to the TypeInfo. Each function
* will also have a wrapper to call it easily:
*
* <example>
* <title>Defining an abstract class</title>
* <programlisting>
* #include "qdev.h"
*
* typedef struct MyDeviceClass
* {
* DeviceClass parent;
*
* void (*frobnicate) (MyDevice *obj);
* } MyDeviceClass;
*
* static TypeInfo my_device_info = {
* .name = TYPE_MY_DEVICE,
* .parent = TYPE_DEVICE,
* .instance_size = sizeof(MyDevice),
* .abstract = true, // or set a default in my_device_class_init
* .class_size = sizeof(MyDeviceClass),
* };
*
* void my_device_frobnicate(MyDevice *obj)
* {
* MyDeviceClass *klass = MY_DEVICE_GET_CLASS(obj);
*
* klass->frobnicate(obj);
* }
* </programlisting>
* </example>
*
* # Interfaces #
*
@ -258,6 +328,16 @@ struct TypeInfo
#define OBJECT(obj) \
((Object *)(obj))
/**
* OBJECT_CLASS:
* @class: A derivative of #ObjectClas.
*
* Converts a class to an #ObjectClass. Since all objects are #Objects,
* this function will always succeed.
*/
#define OBJECT_CLASS(class) \
((ObjectClass *)(class))
/**
* OBJECT_CHECK:
* @type: The C type to use for the return value.
@ -272,7 +352,7 @@ struct TypeInfo
* generated.
*/
#define OBJECT_CHECK(type, obj, name) \
((type *)object_dynamic_cast_assert((Object *)(obj), (name)))
((type *)object_dynamic_cast_assert(OBJECT(obj), (name)))
/**
* OBJECT_CLASS_CHECK:
@ -280,11 +360,12 @@ struct TypeInfo
* @obj: A derivative of @type to cast.
* @name: the QOM typename of @class.
*
* A type safe version of @object_check_class. This macro is typically wrapped
* by each type to perform type safe casts of a class to a specific class type.
* A type safe version of @object_class_dynamic_cast_assert. This macro is
* typically wrapped by each type to perform type safe casts of a class to a
* specific class type.
*/
#define OBJECT_CLASS_CHECK(class, obj, name) \
((class *)object_class_dynamic_cast_assert((ObjectClass *)(obj), (name)))
((class *)object_class_dynamic_cast_assert(OBJECT_CLASS(obj), (name)))
/**
* OBJECT_GET_CLASS:
@ -299,9 +380,6 @@ struct TypeInfo
#define OBJECT_GET_CLASS(class, obj, name) \
OBJECT_CLASS_CHECK(class, object_get_class(OBJECT(obj)), name)
#define OBJECT_CLASS(class) \
((ObjectClass *)(class))
/**
* InterfaceClass:
* @parent_class: the base class
@ -543,6 +621,100 @@ void object_unparent(Object *obj);
void object_property_get(Object *obj, struct Visitor *v, const char *name,
struct Error **errp);
/**
* object_property_set_str:
* @value: the value to be written to the property
* @name: the name of the property
* @errp: returns an error if this function fails
*
* Writes a string value to a property.
*/
void object_property_set_str(Object *obj, const char *value,
const char *name, struct Error **errp);
/**
* object_property_get_str:
* @obj: the object
* @name: the name of the property
* @errp: returns an error if this function fails
*
* Returns: the value of the property, converted to a C string, or NULL if
* an error occurs (including when the property value is not a string).
* The caller should free the string.
*/
char *object_property_get_str(Object *obj, const char *name,
struct Error **errp);
/**
* object_property_set_link:
* @value: the value to be written to the property
* @name: the name of the property
* @errp: returns an error if this function fails
*
* Writes an object's canonical path to a property.
*/
void object_property_set_link(Object *obj, Object *value,
const char *name, struct Error **errp);
/**
* object_property_get_link:
* @obj: the object
* @name: the name of the property
* @errp: returns an error if this function fails
*
* Returns: the value of the property, resolved from a path to an Object,
* or NULL if an error occurs (including when the property value is not a
* string or not a valid object path).
*/
Object *object_property_get_link(Object *obj, const char *name,
struct Error **errp);
/**
* object_property_set_bool:
* @value: the value to be written to the property
* @name: the name of the property
* @errp: returns an error if this function fails
*
* Writes a bool value to a property.
*/
void object_property_set_bool(Object *obj, bool value,
const char *name, struct Error **errp);
/**
* object_property_get_bool:
* @obj: the object
* @name: the name of the property
* @errp: returns an error if this function fails
*
* Returns: the value of the property, converted to a boolean, or NULL if
* an error occurs (including when the property value is not a bool).
*/
bool object_property_get_bool(Object *obj, const char *name,
struct Error **errp);
/**
* object_property_set_int:
* @value: the value to be written to the property
* @name: the name of the property
* @errp: returns an error if this function fails
*
* Writes an integer value to a property.
*/
void object_property_set_int(Object *obj, int64_t value,
const char *name, struct Error **errp);
/**
* object_property_get_int:
* @obj: the object
* @name: the name of the property
* @errp: returns an error if this function fails
*
* Returns: the value of the property, converted to an integer, or NULL if
* an error occurs (including when the property value is not an integer).
*/
int64_t object_property_get_int(Object *obj, const char *name,
struct Error **errp);
/**
* object_property_set:
* @obj: the object
@ -601,13 +773,34 @@ gchar *object_get_canonical_path(Object *obj);
* specifying objects easy. At each level of the composition tree, the partial
* path is matched as an absolute path. The first match is not returned. At
* least two matches are searched for. A successful result is only returned if
* only one match is founded. If more than one match is found, a flag is
* return to indicate that the match was ambiguous.
* only one match is found. If more than one match is found, a flag is
* returned to indicate that the match was ambiguous.
*
* Returns: The matched object or NULL on path lookup failure.
*/
Object *object_resolve_path(const char *path, bool *ambiguous);
/**
* object_resolve_path_type:
* @path: the path to resolve
* @typename: the type to look for.
* @ambiguous: returns true if the path resolution failed because of an
* ambiguous match
*
* This is similar to object_resolve_path. However, when looking for a
* partial path only matches that implement the given type are considered.
* This restricts the search and avoids spuriously flagging matches as
* ambiguous.
*
* For both partial and absolute paths, the return value goes through
* a dynamic cast to @typename. This is important if either the link,
* or the typename itself are of interface types.
*
* Returns: The matched object or NULL on path lookup failure.
*/
Object *object_resolve_path_type(const char *path, const char *typename,
bool *ambiguous);
/**
* object_property_add_child:
* @obj: the object to add a property to

42
include/qemu/qom-qobject.h Normal file
View File

@ -0,0 +1,42 @@
/*
* QEMU Object Model - QObject wrappers
*
* Copyright (C) 2012 Red Hat, Inc.
*
* Author: Paolo Bonzini <pbonzini@redhat.com>
*
* This work is licensed under the terms of the GNU GPL, version 2 or later.
* See the COPYING file in the top-level directory.
*
*/
#ifndef QEMU_QOM_QOBJECT_H
#define QEMU_QOM_QOBJECT_H
#include "qemu/object.h"
/*
* object_property_get_qobject:
* @obj: the object
* @name: the name of the property
* @errp: returns an error if this function fails
*
* Returns: the value of the property, converted to QObject, or NULL if
* an error occurs.
*/
struct QObject *object_property_get_qobject(Object *obj, const char *name,
struct Error **errp);
/**
* object_property_set_qobject:
* @obj: the object
* @ret: The value that will be written to the property.
* @name: the name of the property
* @errp: returns an error if this function fails
*
* Writes a property to a object.
*/
void object_property_set_qobject(Object *obj, struct QObject *qobj,
const char *name, struct Error **errp);
#endif

1
qemu-common.h
View File

@ -255,6 +255,7 @@ typedef enum LostTickPolicy {
LOST_TICK_DELAY,
LOST_TICK_MERGE,
LOST_TICK_SLEW,
LOST_TICK_MAX
} LostTickPolicy;
void tcg_exec_init(unsigned long tb_size);

4
qerror.c
View File

@ -47,6 +47,10 @@ 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",

3
qerror.h
View File

@ -54,6 +54,9 @@ QError *qobject_to_qerror(const QObject *obj);
#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 } }"

18
qmp.c
View File

@ -21,9 +21,8 @@
#include "kvm.h"
#include "arch_init.h"
#include "hw/qdev.h"
#include "qapi/qmp-input-visitor.h"
#include "qapi/qmp-output-visitor.h"
#include "blockdev.h"
#include "qemu/qom-qobject.h"
NameInfo *qmp_query_name(Error **errp)
{
@ -198,7 +197,6 @@ int qmp_qom_set(Monitor *mon, const QDict *qdict, QObject **ret)
const char *property = qdict_get_str(qdict, "property");
QObject *value = qdict_get(qdict, "value");
Error *local_err = NULL;
QmpInputVisitor *mi;
Object *obj;
obj = object_resolve_path(path, NULL);
@ -207,10 +205,7 @@ int qmp_qom_set(Monitor *mon, const QDict *qdict, QObject **ret)
goto out;
}
mi = qmp_input_visitor_new(value);
object_property_set(obj, qmp_input_get_visitor(mi), property, &local_err);
qmp_input_visitor_cleanup(mi);
object_property_set_qobject(obj, value, property, &local_err);
out:
if (local_err) {
@ -227,7 +222,6 @@ int qmp_qom_get(Monitor *mon, const QDict *qdict, QObject **ret)
const char *path = qdict_get_str(qdict, "path");
const char *property = qdict_get_str(qdict, "property");
Error *local_err = NULL;
QmpOutputVisitor *mo;
Object *obj;
obj = object_resolve_path(path, NULL);
@ -236,13 +230,7 @@ int qmp_qom_get(Monitor *mon, const QDict *qdict, QObject **ret)
goto out;
}
mo = qmp_output_visitor_new();
object_property_get(obj, qmp_output_get_visitor(mo), property, &local_err);
if (!local_err) {
*ret = qmp_output_get_qobject(mo);
}
qmp_output_visitor_cleanup(mo);
*ret = object_property_get_qobject(obj, property, &local_err);
out:
if (local_err) {

2
qom/Makefile
View File

@ -1 +1 @@
qom-y = object.o container.o
qom-y = object.o container.o qom-qobject.o

280
qom/object.c
View File

@ -13,8 +13,14 @@
#include "qemu/object.h"
#include "qemu-common.h"
#include "qapi/qapi-visit-core.h"
#include "hw/qdev.h"
// FIXME remove above
/* TODO: replace QObject with a simpler visitor to avoid a dependency
* of the QOM core on QObject? */
#include "qemu/qom-qobject.h"
#include "qobject.h"
#include "qbool.h"
#include "qint.h"
#include "qstring.h"
#define MAX_INTERFACES 32
@ -63,6 +69,8 @@ typedef struct Interface
#define INTERFACE(obj) OBJECT_CHECK(Interface, obj, TYPE_INTERFACE)
static Type type_interface;
static GHashTable *type_table_get(void)
{
static GHashTable *type_table;
@ -368,11 +376,9 @@ void object_delete(Object *obj)
g_free(obj);
}
static bool object_is_type(Object *obj, const char *typename)
static bool type_is_ancestor(TypeImpl *type, TypeImpl *target_type)
{
TypeImpl *target_type = type_get_by_name(typename);
TypeImpl *type = obj->class->type;
GSList *i;
assert(target_type);
/* Check if typename is a direct ancestor of type */
while (type) {
@ -383,24 +389,45 @@ static bool object_is_type(Object *obj, const char *typename)
type = type_get_parent(type);
}
/* Check if obj has an interface of typename */
for (i = obj->interfaces; i; i = i->next) {
Interface *iface = i->data;
if (object_is_type(OBJECT(iface), typename)) {
return true;
}
}
return false;
}
static bool object_is_type(Object *obj, TypeImpl *target_type)
{
return !target_type || type_is_ancestor(obj->class->type, target_type);
}
Object *object_dynamic_cast(Object *obj, const char *typename)
{
TypeImpl *target_type = type_get_by_name(typename);
GSList *i;
/* Check if typename is a direct ancestor */
if (object_is_type(obj, typename)) {
/* Check if typename is a direct ancestor. Special-case TYPE_OBJECT,
* we want to go back from interfaces to the parent.
*/
if (target_type && object_is_type(obj, target_type)) {
return obj;
}
/* Check if obj is an interface and its containing object is a direct
* ancestor of typename. In principle we could do this test at the very
* beginning of object_dynamic_cast, avoiding a second call to
* object_is_type. However, casting between interfaces is relatively
* rare, and object_is_type(obj, type_interface) would fail almost always.
*
* Perhaps we could add a magic value to the object header for increased
* (run-time) type safety and to speed up tests like this one. If we ever
* do that we can revisit the order here.
*/
if (object_is_type(obj, type_interface)) {
assert(!obj->interfaces);
obj = INTERFACE(obj)->obj;
if (object_is_type(obj, target_type)) {
return obj;
}
}
if (!target_type) {
return obj;
}
@ -408,21 +435,11 @@ Object *object_dynamic_cast(Object *obj, const char *typename)
for (i = obj->interfaces; i; i = i->next) {
Interface *iface = i->data;
if (object_is_type(OBJECT(iface), typename)) {
if (object_is_type(OBJECT(iface), target_type)) {
return OBJECT(iface);
}
}
/* Check if obj is an interface and its containing object is a direct
* ancestor of typename */
if (object_is_type(obj, TYPE_INTERFACE)) {
Interface *iface = INTERFACE(obj);
if (object_is_type(iface->obj, typename)) {
return iface->obj;
}
}
return NULL;
}
@ -435,7 +452,7 @@ static void register_interface(void)
.abstract = true,
};
type_register_static(&interface_info);
type_interface = type_register_static(&interface_info);
}
device_init(register_interface);
@ -648,6 +665,123 @@ void object_property_set(Object *obj, Visitor *v, const char *name,
}
}
void object_property_set_str(Object *obj, const char *value,
const char *name, Error **errp)
{
QString *qstr = qstring_from_str(value);
object_property_set_qobject(obj, QOBJECT(qstr), name, errp);
QDECREF(qstr);
}
char *object_property_get_str(Object *obj, const char *name,
Error **errp)
{
QObject *ret = object_property_get_qobject(obj, name, errp);
QString *qstring;
char *retval;
if (!ret) {
return NULL;
}
qstring = qobject_to_qstring(ret);
if (!qstring) {
error_set(errp, QERR_INVALID_PARAMETER_TYPE, name, "string");
retval = NULL;
} else {
retval = g_strdup(qstring_get_str(qstring));
}
QDECREF(qstring);
return retval;
}
void object_property_set_link(Object *obj, Object *value,
const char *name, Error **errp)
{
object_property_set_str(obj, object_get_canonical_path(value),
name, errp);
}
Object *object_property_get_link(Object *obj, const char *name,
Error **errp)
{
char *str = object_property_get_str(obj, name, errp);
Object *target = NULL;
if (str && *str) {
target = object_resolve_path(str, NULL);
if (!target) {
error_set(errp, QERR_DEVICE_NOT_FOUND, str);
}
}
g_free(str);
return target;
}
void object_property_set_bool(Object *obj, bool value,
const char *name, Error **errp)
{
QBool *qbool = qbool_from_int(value);
object_property_set_qobject(obj, QOBJECT(qbool), name, errp);
QDECREF(qbool);
}
bool object_property_get_bool(Object *obj, const char *name,
Error **errp)
{
QObject *ret = object_property_get_qobject(obj, name, errp);
QBool *qbool;
bool retval;
if (!ret) {
return false;
}
qbool = qobject_to_qbool(ret);
if (!qbool) {
error_set(errp, QERR_INVALID_PARAMETER_TYPE, name, "boolean");
retval = false;
} else {
retval = qbool_get_int(qbool);
}
QDECREF(qbool);
return retval;
}
void object_property_set_int(Object *obj, int64_t value,
const char *name, Error **errp)
{
QInt *qint = qint_from_int(value);
object_property_set_qobject(obj, QOBJECT(qint), name, errp);
QDECREF(qint);
}
int64_t object_property_get_int(Object *obj, const char *name,
Error **errp)
{
QObject *ret = object_property_get_qobject(obj, name, errp);
QInt *qint;
int64_t retval;
if (!ret) {
return -1;
}
qint = qobject_to_qint(ret);
if (!qint) {
error_set(errp, QERR_INVALID_PARAMETER_TYPE, name, "int");
retval = -1;
} else {
retval = qint_get_int(qint);
}
QDECREF(qint);
return retval;
}
const char *object_property_get_type(Object *obj, const char *name, Error **errp)
{
ObjectProperty *prop = object_property_find(obj, name);
@ -695,6 +829,12 @@ void object_property_add_child(Object *obj, const char *name,
{
gchar *type;
/* Registering an interface object in the composition tree will mightily
* confuse object_get_canonical_path (which, on the other hand, knows how
* to get the canonical path of an interface object).
*/
assert(!object_is_type(obj, type_interface));
type = g_strdup_printf("child<%s>", object_get_typename(OBJECT(child)));
object_property_add(obj, name, type, object_get_child_property,
@ -730,6 +870,7 @@ static void object_set_link_property(Object *obj, Visitor *v, void *opaque,
bool ambiguous = false;
const char *type;
char *path;
gchar *target_type;
type = object_property_get_type(obj, name, NULL);
@ -737,31 +878,30 @@ static void object_set_link_property(Object *obj, Visitor *v, void *opaque,
if (*child) {
object_unref(*child);
*child = NULL;
}
if (strcmp(path, "") != 0) {
Object *target;
target = object_resolve_path(path, &ambiguous);
if (target) {
gchar *target_type;
/* Go from link<FOO> to FOO. */
target_type = g_strndup(&type[5], strlen(type) - 6);
target = object_resolve_path_type(path, target_type, &ambiguous);
target_type = g_strdup(&type[5]);
target_type[strlen(target_type) - 2] = 0;
if (object_dynamic_cast(target, target_type)) {
object_ref(target);
*child = target;
} else {
error_set(errp, QERR_INVALID_PARAMETER_TYPE, name, type);
}
g_free(target_type);
if (ambiguous) {
error_set(errp, QERR_AMBIGUOUS_PATH, path);
} else if (target) {
object_ref(target);
*child = target;
} else {
error_set(errp, QERR_DEVICE_NOT_FOUND, path);
target = object_resolve_path(path, &ambiguous);
if (target || ambiguous) {
error_set(errp, QERR_INVALID_PARAMETER_TYPE, name, target_type);
} else {
error_set(errp, QERR_DEVICE_NOT_FOUND, path);
}
}
} else {
*child = NULL;
g_free(target_type);
}
g_free(path);
@ -788,6 +928,10 @@ gchar *object_get_canonical_path(Object *obj)
Object *root = object_get_root();
char *newpath = NULL, *path = NULL;
if (object_is_type(obj, type_interface)) {
obj = INTERFACE(obj)->obj;
}
while (obj != root) {
ObjectProperty *prop = NULL;
@ -823,17 +967,18 @@ gchar *object_get_canonical_path(Object *obj)
static Object *object_resolve_abs_path(Object *parent,
gchar **parts,
const char *typename,
int index)
{
ObjectProperty *prop;
Object *child;
if (parts[index] == NULL) {
return parent;
return object_dynamic_cast(parent, typename);
}
if (strcmp(parts[index], "") == 0) {
return object_resolve_abs_path(parent, parts, index + 1);
return object_resolve_abs_path(parent, parts, typename, index + 1);
}
prop = object_property_find(parent, parts[index]);
@ -855,17 +1000,18 @@ static Object *object_resolve_abs_path(Object *parent,
return NULL;
}
return object_resolve_abs_path(child, parts, index + 1);
return object_resolve_abs_path(child, parts, typename, index + 1);
}
static Object *object_resolve_partial_path(Object *parent,
gchar **parts,
const char *typename,
bool *ambiguous)
{
Object *obj;
ObjectProperty *prop;
obj = object_resolve_abs_path(parent, parts, 0);
obj = object_resolve_abs_path(parent, parts, typename, 0);
QTAILQ_FOREACH(prop, &parent->properties, node) {
Object *found;
@ -874,7 +1020,8 @@ static Object *object_resolve_partial_path(Object *parent,
continue;
}
found = object_resolve_partial_path(prop->opaque, parts, ambiguous);
found = object_resolve_partial_path(prop->opaque, parts,
typename, ambiguous);
if (found) {
if (obj) {
if (ambiguous) {
@ -893,7 +1040,8 @@ static Object *object_resolve_partial_path(Object *parent,
return obj;
}
Object *object_resolve_path(const char *path, bool *ambiguous)
Object *object_resolve_path_type(const char *path, const char *typename,
bool *ambiguous)
{
bool partial_path = true;
Object *obj;
@ -913,9 +1061,10 @@ Object *object_resolve_path(const char *path, bool *ambiguous)
if (ambiguous) {
*ambiguous = false;
}
obj = object_resolve_partial_path(object_get_root(), parts, ambiguous);
obj = object_resolve_partial_path(object_get_root(), parts,
typename, ambiguous);
} else {
obj = object_resolve_abs_path(object_get_root(), parts, 1);
obj = object_resolve_abs_path(object_get_root(), parts, typename, 1);
}
g_strfreev(parts);
@ -923,14 +1072,19 @@ Object *object_resolve_path(const char *path, bool *ambiguous)
return obj;
}
Object *object_resolve_path(const char *path, bool *ambiguous)
{
return object_resolve_path_type(path, TYPE_OBJECT, ambiguous);
}
typedef struct StringProperty
{
char *(*get)(Object *, Error **);
void (*set)(Object *, const char *, Error **);
} StringProperty;
static void object_property_get_str(Object *obj, Visitor *v, void *opaque,
const char *name, Error **errp)
static void property_get_str(Object *obj, Visitor *v, void *opaque,
const char *name, Error **errp)
{
StringProperty *prop = opaque;
char *value;
@ -942,8 +1096,8 @@ static void object_property_get_str(Object *obj, Visitor *v, void *opaque,
}
}
static void object_property_set_str(Object *obj, Visitor *v, void *opaque,
const char *name, Error **errp)
static void property_set_str(Object *obj, Visitor *v, void *opaque,
const char *name, Error **errp)
{
StringProperty *prop = opaque;
char *value;
@ -959,8 +1113,8 @@ static void object_property_set_str(Object *obj, Visitor *v, void *opaque,
g_free(value);
}
static void object_property_release_str(Object *obj, const char *name,
void *opaque)
static void property_release_str(Object *obj, const char *name,
void *opaque)
{
StringProperty *prop = opaque;
g_free(prop);
@ -977,8 +1131,8 @@ void object_property_add_str(Object *obj, const char *name,
prop->set = set;
object_property_add(obj, name, "string",
get ? object_property_get_str : NULL,
set ? object_property_set_str : NULL,
object_property_release_str,
get ? property_get_str : NULL,
set ? property_set_str : NULL,
property_release_str,
prop, errp);
}

44
qom/qom-qobject.c Normal file
View File

@ -0,0 +1,44 @@
/*
* QEMU Object Model - QObject wrappers
*
* Copyright (C) 2012 Red Hat, Inc.
*
* Author: Paolo Bonzini <pbonzini@redhat.com>
*
* This work is licensed under the terms of the GNU GPL, version 2 or later.
* See the COPYING file in the top-level directory.
*/
#include "qemu-common.h"
#include "qemu/object.h"
#include "qemu/qom-qobject.h"
#include "qapi/qapi-visit-core.h"
#include "qapi/qmp-input-visitor.h"
#include "qapi/qmp-output-visitor.h"
void object_property_set_qobject(Object *obj, QObject *value,
const char *name, Error **errp)
{
QmpInputVisitor *mi;
mi = qmp_input_visitor_new(value);
object_property_set(obj, qmp_input_get_visitor(mi), name, errp);
qmp_input_visitor_cleanup(mi);
}
QObject *object_property_get_qobject(Object *obj, const char *name,
Error **errp)
{
QObject *ret = NULL;
Error *local_err = NULL;
QmpOutputVisitor *mo;
mo = qmp_output_visitor_new();
object_property_get(obj, qmp_output_get_visitor(mo), name, &local_err);
if (!local_err) {
ret = qmp_output_get_qobject(mo);
}
error_propagate(errp, local_err);
qmp_output_visitor_cleanup(mo);
return ret;
}