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Set ERR_INVALID_OBEJCT if call failed to server

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Tell the client that the last operation failed, instead of continuing doing
useless things.
This commit is contained in:
Alexander Boettcher 2012-08-10 09:25:22 +02:00 committed by Norman Feske
parent c06c2887f2
commit 8526dc4f19
2 changed files with 11 additions and 2 deletions
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5
base-nova/src/base/ipc/ipc.cc
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@ -144,10 +144,11 @@ void Ipc_client::_call()
/* establish the mapping via a portal traversal */
uint8_t res = Nova::call(Ipc_ostream::_dst.local_name());
if (res) {
if (res != Nova::NOVA_OK) {
/* If an error occurred, reset word&item count (not done by kernel). */
utcb->set_msg_word(0);
PERR("call returned %u", res);
/* set return value for ipc_generic part if call failed */
ret(ERR_INVALID_OBJECT);
}
_rcv_msg->post_ipc(utcb);

8
base/include/base/ipc_generic.h
View File

@ -421,6 +421,14 @@ namespace Genode {
*/
void _call();
/**
* Set return value if call to server failed
*/
void ret(int retval)
{
*reinterpret_cast<int *>(&_rcvbuf[sizeof(umword_t)]) = retval;
}
public:
/**