On 09/23/2011 12:40 AM, Hu Tao wrote:
This makes string can be transported between client and server.
For compatibility,
o new server should not send strings to old client if it
doesn't see the flag VIR_DOMAIN_TYPED_STRING_OKAY.
o new client that wants to be able to send/receive strings
should always set the flag VIR_DOMAIN_TYPED_STRING_OKAY;
if it is rejected by a old server that doesn't understand
VIR_DOMAIN_TYPED_STRING_OKAY, then the client should have
a second try with out flag VIR_DOMAIN_TYPED_STRING_OKAY
to cope with an old server.
These points should probably be documented in libvirt.h.in, as well.
I'm also thinking that libvirt.c should do some argument validation -
for every API that uses a virTypedParameter array, it should validate
that no VIR_TYPED_PARAM_STRING occurs if the flag is not present.
+++ b/daemon/remote.c
@@ -672,6 +672,15 @@ remoteSerializeTypedParameters(virTypedParameterPtr params,
case VIR_TYPED_PARAM_BOOLEAN:
val[i].value.remote_typed_param_value_u.b = params[i].value.b;
break;
+ case VIR_TYPED_PARAM_STRING:
+ if (params[i].value.s) {
+ val[i].value.remote_typed_param_value_u.s = strdup(params[i].value.s);
+ if (val[i].value.remote_typed_param_value_u.s == NULL) {
+ virReportOOMError();
+ goto cleanup;
+ }
+ }
+ break;
default:
Memory leak. The cleanup: label must free any successfully allocated
remote_typed_param_value_u.s contents prior to the failure point.
virNetError(VIR_ERR_RPC, _("unknown parameter type: %d"),
params[i].type);
@@ -750,6 +759,14 @@ remoteDeserializeTypedParameters(remote_typed_param *args_params_val,
params[i].value.b =
args_params_val[i].value.remote_typed_param_value_u.b;
break;
+ case VIR_TYPED_PARAM_STRING:
+ params[i].value.s =
+ strdup(args_params_val[i].value.remote_typed_param_value_u.s);
+ if (params[i].value.s == NULL) {
+ virReportOOMError();
+ goto cleanup;
+ }
+ break;
default:
virNetError(VIR_ERR_INTERNAL_ERROR, _("unknown parameter type: %d"),
params[i].type);
Memory leak. The cleanup: label must now iterate over params, and free
any successfully allocated params[i].value.s allocated prior to a failure.
diff --git a/include/libvirt/libvirt.h.in b/include/libvirt/libvirt.h.in
index 39155a6..448a0e7 100644
--- a/include/libvirt/libvirt.h.in
+++ b/include/libvirt/libvirt.h.in
@@ -205,6 +205,7 @@ typedef enum {
VIR_DOMAIN_AFFECT_CURRENT = 0, /* Affect current domain state. */
VIR_DOMAIN_AFFECT_LIVE = 1<< 0, /* Affect running domain state. */
VIR_DOMAIN_AFFECT_CONFIG = 1<< 1, /* Affect persistent domain state. */
+ VIR_DOMAIN_TYPED_STRING_OKAY = 1<< 2,
} virDomainModificationImpact;
I'm not sure if this is the best place to stick this enum value; it
might fit better if it is listed (and documented!) closer to the rest of
virTypedParameterType stuff. But I agree with setting it to the value
of 1<<2, since all current clients of virTypedParameterType seem to be
using VIR_DOMAIN_AFFECT_* and nothing further.
/**
@@ -489,7 +490,8 @@ typedef enum {
VIR_TYPED_PARAM_LLONG = 3, /* long long case */
VIR_TYPED_PARAM_ULLONG = 4, /* unsigned long long case */
VIR_TYPED_PARAM_DOUBLE = 5, /* double case */
- VIR_TYPED_PARAM_BOOLEAN = 6 /* boolean(character) case */
+ VIR_TYPED_PARAM_BOOLEAN = 6, /* boolean(character) case */
+ VIR_TYPED_PARAM_STRING = 7 /* string case */
Put a trailing comma after 7, so that the next addition (if any) doesn't
have to touch two lines like this addition did.
} virTypedParameterType;
/**
@@ -520,6 +522,7 @@ struct _virTypedParameter {
unsigned long long int ul; /* type is ULLONG */
double d; /* type is DOUBLE */
char b; /* type is BOOLEAN */
+ char *s; /* type is STRING */
Here, I'd use:
char *s; /* type is STRING, see also VIR_DOMAIN_TYPED_STRING_OKAY */
} value; /* parameter value */
};
diff --git a/src/remote/remote_driver.c b/src/remote/remote_driver.c
index 1217d94..85eaeea 100644
--- a/src/remote/remote_driver.c
+++ b/src/remote/remote_driver.c
@@ -1276,6 +1276,15 @@ remoteSerializeTypedParameters(virTypedParameterPtr params,
case VIR_TYPED_PARAM_BOOLEAN:
val[i].value.remote_typed_param_value_u.b = params[i].value.b;
break;
+ case VIR_TYPED_PARAM_STRING:
+ if (params[i].value.s) {
+ val[i].value.remote_typed_param_value_u.s = strdup(params[i].value.s);
+ if (val[i].value.remote_typed_param_value_u.s == NULL) {
+ virReportOOMError();
+ goto cleanup;
+ }
+ }
+ break;
Counterpart memory leak.
default:
remoteError(VIR_ERR_RPC, _("unknown parameter type: %d"),
params[i].type);
@@ -1347,6 +1356,14 @@ remoteDeserializeTypedParameters(remote_typed_param *ret_params_val,
params[i].value.b =
ret_params_val[i].value.remote_typed_param_value_u.b;
break;
+ case VIR_TYPED_PARAM_STRING:
+ params[i].value.s =
+ strdup(ret_params_val[i].value.remote_typed_param_value_u.s);
+ if (params[i].value.s == NULL) {
+ virReportOOMError();
+ goto cleanup;
+ }
+ break;
And another memory leak.
--
Eric Blake eblake@xxxxxxxxxx +1-801-349-2682
Libvirt virtualization library http://libvirt.org
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