/**
* ebtablesContextNew:
*
* Create a new ebtable context
*
* Returns a pointer to the new structure or NULL in case of error
*/
ebtablesContext *
ebtablesContextNew(const char *driver)
{
ebtablesContext *ctx;
char chain[PATH_MAX];
if (VIR_ALLOC(ctx) < 0)
return NULL;
snprintf(chain, sizeof(chain), "libvirt_%s_INPUT", driver);
if (!(ctx->input_filter = ebtRulesNew("filter", chain)))
goto error;
snprintf(chain, sizeof(chain), "libvirt_%s_FORWARD", driver);
if (!(ctx->forward_filter = ebtRulesNew("filter", chain)))
goto error;
snprintf(chain, sizeof(chain), "libvirt_%s_POSTROUTING", driver);
if (!(ctx->nat_postrouting = ebtRulesNew("nat", chain)))
goto error;
return ctx;
error:
ebtablesContextFree(ctx);
return NULL;
}
/**
* ebtablesContextNew:
*
* Create a new ebtable context
*
* Returns a pointer to the new structure or NULL in case of error
*/
ebtablesContext *
ebtablesContextNew(const char *driver)
{
bool success = false;
ebtablesContext *ctx = NULL;
char *input_chain = NULL;
char *forward_chain = NULL;
char *nat_chain = NULL;
if (VIR_ALLOC(ctx) < 0)
return NULL;
if (virAsprintf(&input_chain, "libvirt_%s_INPUT", driver) < 0 ||
virAsprintf(&forward_chain, "libvirt_%s_FORWARD", driver) < 0 ||
virAsprintf(&nat_chain, "libvirt_%s_POSTROUTING", driver) < 0) {
goto cleanup;
}
if (!(ctx->input_filter = ebtRulesNew("filter", input_chain)))
goto cleanup;
if (!(ctx->forward_filter = ebtRulesNew("filter", forward_chain)))
goto cleanup;
if (!(ctx->nat_postrouting = ebtRulesNew("nat", nat_chain)))
goto cleanup;
success = true;
cleanup:
VIR_FREE(input_chain);
VIR_FREE(forward_chain);
VIR_FREE(nat_chain);
if (!success) {
ebtablesContextFree(ctx);
ctx = NULL;
}
return ctx;
}
