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); }