Re: [libvirt] [PATCH] Give virNWFilterVarCombIterNext saner semantics

The virNWFilterVarCombIterNext method will free its parameter when it gets to the end of the iterator. This is somewhat misleading design, making it appear as if the caller has a memory leak. Remove the free'ing of the parameter and ensure that the calling method ebiptablesCreateRuleInstanceIterate free's it instead. Signed-off-by: Daniel P. Berrange <berrange(a)redhat.com&gt; --- src/conf/nwfilter_params.c | 4 +--- src/nwfilter/nwfilter_ebiptables_driver.c | 12 ++++++------ 2 files changed, 7 insertions(+), 9 deletions(-) diff --git a/src/conf/nwfilter_params.c b/src/conf/nwfilter_params.c index a78c407..5393134 100644 --- a/src/conf/nwfilter_params.c +++ b/src/conf/nwfilter_params.c @@ -526,10 +526,8 @@ next: } } - if (ci->nIter == i) { - virNWFilterVarCombIterFree(ci); + if (ci->nIter == i) return NULL; - } return ci; } diff --git a/src/nwfilter/nwfilter_ebiptables_driver.c b/src/nwfilter/nwfilter_ebiptables_driver.c index 0505045..e1e0af8 100644 --- a/src/nwfilter/nwfilter_ebiptables_driver.c +++ b/src/nwfilter/nwfilter_ebiptables_driver.c @@ -2869,14 +2869,14 @@ ebiptablesCreateRuleInstanceIterate( virNWFilterRuleInstPtr res) { int rc = 0; - virNWFilterVarCombIterPtr vciter; + virNWFilterVarCombIterPtr vciter, tmp; /* rule->vars holds all the variables names that this rule will access. * iterate over all combinations of the variables' values and instantiate * the filtering rule with each combination. */ - vciter = virNWFilterVarCombIterCreate(vars, - rule->varAccess, rule->nVarAccess); + tmp = vciter = virNWFilterVarCombIterCreate(vars, + rule->varAccess, rule->nVarAccess); if (!vciter) return -1; @@ -2885,12 +2885,12 @@ ebiptablesCreateRuleInstanceIterate( nwfilter, rule, ifname, - vciter, + tmp, res); if (rc < 0) break; - vciter = virNWFilterVarCombIterNext(vciter); - } while (vciter != NULL); + tmp = virNWFilterVarCombIterNext(tmp); + } while (tmp != NULL); virNWFilterVarCombIterFree(vciter);