void
update_owner__rx_handler(struct intermon_binding *b, intermon_caprep_t caprep, genvaddr_t st)
{
errval_t err;
struct intermon_state *inter_st = (struct intermon_state*)b->st;
coreid_t from = inter_st->core_id;
struct capref capref;
struct capability cap;
caprep_to_capability(&caprep, &cap);
err = slot_alloc(&capref);
if (err_is_fail(err)) {
USER_PANIC_ERR(err, "failed to allocate slot for owner update");
}
err = monitor_copy_if_exists(&cap, capref);
if (err_is_ok(err)) {
err = monitor_set_cap_owner(cap_root, get_cap_addr(capref),
get_cap_valid_bits(capref), from);
}
if (err_no(err) == SYS_ERR_CAP_NOT_FOUND) {
err = SYS_ERR_OK;
}
if (err_is_fail(err)) {
USER_PANIC_ERR(err, "failed to update cap ownership");
}
cap_destroy(capref);
err = owner_updated(from, st);
if (err_is_fail(err)) {
USER_PANIC_ERR(err, "failed to send ownership update response");
}
}
void
retrieve_request__rx(struct intermon_binding *b,
intermon_caprep_t caprep,
genvaddr_t st)
{
errval_t err, err2;
struct intermon_state *inter_st = (struct intermon_state*)b->st;
struct retrieve_response_st *rst;
err = calloce(1, sizeof(*rst), &rst);
PANIC_IF_ERR(err, "allocating retrieve respones state");
rst->st = st;
rst->from = inter_st->core_id;
struct capability rawcap;
caprep_to_capability(&caprep, &rawcap);
struct capref cap;
err = slot_alloc(&cap);
GOTO_IF_ERR(err, respond_err);
err = monitor_copy_if_exists(&rawcap, cap);
GOTO_IF_ERR(err, free_slot);
distcap_state_t state;
err = dom_cnode_get_state(get_cap_domref(cap), &state);
GOTO_IF_ERR(err, delete_cap);
if (distcap_state_is_busy(state)) {
err = MON_ERR_REMOTE_CAP_RETRY;
goto delete_cap;
}
if (distcap_state_is_foreign(state)) {
err = MON_ERR_CAP_FOREIGN;
goto delete_cap;
}
uint8_t relations, remote_relations;
err = monitor_cap_has_relations(cap, 0xFF, &relations);
GOTO_IF_ERR(err, delete_cap);
err = monitor_remote_relations(cap, 0, 0, &remote_relations);
GOTO_IF_ERR(err, delete_cap);
rst->relations = relations | remote_relations | RRELS_COPY_BIT;
err = monitor_set_cap_owner(cap_root, get_cap_addr(cap),
get_cap_valid_bits(cap),
rst->from);
delete_cap:
err2 = cap_delete(cap);
DEBUG_IF_ERR(err2, "while deleting temp cap for retrieve");
free_slot:
err2 = slot_free(cap);
DEBUG_IF_ERR(err2, "freeing temp cap slot for retrieve");
respond_err:
retrieve_result__enq(err, rst);
}
