static int handle_pool4_flush(struct nlmsghdr *nl_hdr, union request_pool4 *request)
{
int error;
if (verify_superpriv())
return respond_error(nl_hdr, -EPERM);
log_debug("Flushing the IPv4 pool...");
error = pool4db_flush();
/*
* Well, pool4db_flush only errors on memory allocation failures,
* so I guess clearing BIB and session even if pool4db_flush fails
* is a good idea.
*/
if (xlat_is_nat64() && !request->flush.quick) {
sessiondb_flush();
bibdb_flush();
}
return respond_error(nl_hdr, error);
}
static int handle_pool4_config(struct nlmsghdr *nl_hdr, struct request_hdr *nat64_hdr,
union request_pool4 *request)
{
__u64 count;
int error;
switch (nat64_hdr->operation) {
case OP_DISPLAY:
return handle_pool4_display(nl_hdr, request);
case OP_COUNT:
log_debug("Returning IPv4 address count.");
error = pool4_count(&count);
if (error)
return respond_error(nl_hdr, error);
return respond_setcfg(nl_hdr, &count, sizeof(count));
case OP_ADD:
if (verify_superpriv())
return respond_error(nl_hdr, -EPERM);
log_debug("Adding an address to the IPv4 pool.");
return respond_error(nl_hdr, pool4_add(&request->add.addrs));
case OP_REMOVE:
if (verify_superpriv())
return respond_error(nl_hdr, -EPERM);
log_debug("Removing an address from the IPv4 pool.");
error = pool4_remove(&request->remove.addrs);
if (error)
return respond_error(nl_hdr, error);
if (nat64_is_stateful() && !request->remove.quick) {
error = sessiondb_delete_by_prefix4(&request->remove.addrs);
if (error)
return respond_error(nl_hdr, error);
error = bibdb_delete_by_prefix4(&request->remove.addrs);
}
return respond_error(nl_hdr, error);
case OP_FLUSH:
if (verify_superpriv()) {
return respond_error(nl_hdr, -EPERM);
}
log_debug("Flushing the IPv4 pool...");
error = pool4_flush();
if (error)
return respond_error(nl_hdr, error);
if (nat64_is_stateful() && !request->flush.quick) {
error = sessiondb_flush();
if (error)
return respond_error(nl_hdr, error);
error = bibdb_flush();
}
return respond_error(nl_hdr, error);
default:
log_err("Unknown operation: %d", nat64_hdr->operation);
return respond_error(nl_hdr, -EINVAL);
}
}
