External/libvirt
1
0
Fork 0
mirror of https://gitlab.com/libvirt/libvirt.git synced 2024-07-30 21:47:18 +00:00
Code Issues Packages Projects Releases Wiki Activity

rpc: handle param_int, plug memory leaks

Browse Source 
The RPC code had several latent memory leaks and an attempt to
free the wrong string, but thankfully nothing triggered them
(blkiotune was the only one returning a string, and always as
the last parameter).  Also, our cleanups for rpcgen ended up
nuking a line of code that renders VIR_TYPED_PARAM_INT broken,
because it was the only use of 'i' in a function, even though
it was a member usage rather than a standalone declaration.

* daemon/remote.c (remoteSerializeTypedParameters): Free the
correct array element.
(remoteDispatchDomainGetSchedulerParameters)
(remoteDispatchDomainGetSchedulerParametersFlags)
(remoteDispatchDomainBlockStatsFlags)
(remoteDispatchDomainGetMemoryParameters): Don't leak strings.
* src/rpc/genprotocol.pl: Don't nuke member-usage of 'buf' or 'i'.
This commit is contained in:
Eric Blake 2011-12-20 08:22:25 -07:00
parent f8616336a3
commit 4e394dea1f
2 changed files with 14 additions and 17 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

23
daemon/remote.c
View File

@ -759,7 +759,7 @@ cleanup:
if (val) {
for (i = 0; i < nparams; i++) {
VIR_FREE(val[i].field);
if (params[i].type == VIR_TYPED_PARAM_STRING)
if (val[i].value.type == VIR_TYPED_PARAM_STRING)
VIR_FREE(val[i].value.remote_typed_param_value_u.s);
}
VIR_FREE(val);
@ -898,9 +898,10 @@ remoteDispatchDomainGetSchedulerParameters(virNetServerPtr server ATTRIBUTE_UNUS
cleanup:
if (rv < 0)
virNetMessageSaveError(rerr);
virTypedParameterArrayClear(params, nparams);
VIR_FREE(params);
if (dom)
virDomainFree(dom);
VIR_FREE(params);
return rv;
no_memory:
@ -953,9 +954,10 @@ remoteDispatchDomainGetSchedulerParametersFlags(virNetServerPtr server ATTRIBUTE
cleanup:
if (rv < 0)
virNetMessageSaveError(rerr);
virTypedParameterArrayClear(params, nparams);
VIR_FREE(params);
if (dom)
virDomainFree(dom);
VIR_FREE(params);
return rv;
no_memory:
@ -1092,7 +1094,6 @@ remoteDispatchDomainBlockStatsFlags(virNetServerPtr server ATTRIBUTE_UNUSED,
{
virTypedParameterPtr params = NULL;
virDomainPtr dom = NULL;
int i;
const char *path = args->path;
int nparams = args->nparams;
unsigned int flags;
@ -1140,17 +1141,12 @@ success:
rv = 0;
cleanup:
if (rv < 0) {
if (rv < 0)
virNetMessageSaveError(rerr);
if (ret->params.params_val) {
for (i = 0; i < nparams; i++)
VIR_FREE(ret->params.params_val[i].field);
VIR_FREE(ret->params.params_val);
}
}
virTypedParameterArrayClear(params, nparams);
VIR_FREE(params);
if (dom)
virDomainFree(dom);
VIR_FREE(params);
return rv;
}
@ -1623,9 +1619,10 @@ success:
cleanup:
if (rv < 0)
virNetMessageSaveError(rerr);
virTypedParameterArrayClear(params, nparams);
VIR_FREE(params);
if (dom)
virDomainFree(dom);
VIR_FREE(params);
return rv;
}

8
src/rpc/genprotocol.pl
View File

@ -67,12 +67,12 @@ while (<RPCGEN>) {
# Note: The body of the function is in @function.
# Remove decl of buf, if buf isn't used in the function.
my @uses = grep /\bbuf\b/, @function;
@function = grep !/\bbuf\b/, @function if @uses == 1;
my @uses = grep /[^.>]\bbuf\b/, @function;
@function = grep !/[^.>]\bbuf\b/, @function if @uses == 1;
# Remove decl of i, if i isn't used in the function.
@uses = grep /\bi\b/, @function;
@function = grep !/\bi\b/, @function if @uses == 1;
@uses = grep /[^.>]\bi\b/, @function;
@function = grep !/[^.>]\bi\b/, @function if @uses == 1;
# (char **)&objp->... gives:
# warning: dereferencing type-punned pointer will break