/* 'open' operation of pipe stream. For each pipe stream, it is
identified by a decimal number in URI. There could be two
types: pipe and pipe.srv. They behave pretty much the same,
except they are two ends of the pipe. */
static int pipe_open (PAL_HANDLE *handle, const char * type,
const char * uri, int access, int share,
int create, int options)
{
if (!memcmp(type, "pipe:", 5) && !*uri)
return pipe_private(handle);
char * endptr;
PAL_NUM pipeid = strtol(uri, &endptr, 10);
PAL_IDX connid = 0;
if (*endptr == ':') {
if (create & PAL_CREAT_TRY)
return -PAL_ERROR_INVAL;
connid = strtol(endptr + 1, &endptr, 10);
}
if (*endptr)
return -PAL_ERROR_INVAL;
if (!memcmp(type, "pipe.srv:", 9))
return pipe_listen(handle, pipeid, create);
if (!memcmp(type, "pipe:", 5))
return pipe_connect(handle, pipeid, connid, create);
return -PAL_ERROR_INVAL;
}
/*
* Callback which invokes pipe_listen().
*
* When we are in pipe_read_cb(), we may try to call pipe_listen()
* (after tearing down an old connection). This can cause an infinite
* loop as they execute in the same helper thread, and pipe_listen()
* will try to reschedule pipe_read_cb().
* Therefore, use QueueUserWorkItem() to make sure that pipe_listen()
* is invoked after a context switch.
*/
void WINAPI
pipe_relisten_cb(void *ctx)
{
pipe_instance_t *pp;
pp = (pipe_instance_t *)ctx;
EnterCriticalSection(&pp->rcs);
TRACE1(ENTER, "Entering pipe_relisten_cb %p", ctx);
pipe_disconnect(pp);
pipe_listen(pp);
TRACE0(ENTER, "Leaving pipe_relisten_cb");
LeaveCriticalSection(&pp->rcs);
}
DWORD
CE_Initialize (
PCONFIGURATION_ENTRY pce,
HANDLE hMgrNotificationEvent,
PSUPPORT_FUNCTIONS psfSupportFunctions,
PXORPRTM_GLOBAL_CONFIG pigc)
{
DWORD dwErr = NO_ERROR;
pipe_instance_t *pp;
int i, pipefail;
do {
pce->ulActivityCount = 0;
pce->hMprConfig = NULL;
dwErr = MprConfigServerConnect(NULL, &pce->hMprConfig);
if (dwErr != NO_ERROR) {
TRACE0(CONFIGURATION, "could not obtain mpr config handle");
}
/* Router Manager Information */
pce->hMgrNotificationEvent = hMgrNotificationEvent;
if (psfSupportFunctions)
pce->sfSupportFunctions = *psfSupportFunctions;
pipefail = 0;
for (i = 0; i < PIPE_INSTANCES; i++) {
pp = pipe_new();
if (pp == NULL) {
pipefail = 1;
break;
} else {
pipe_listen(pp);
pce->pipes[i] = pp;
}
}
if (pipefail) {
TRACE0(CONFIGURATION, "failed to allocate all pipes");
break;
}
TRACE0(ANY, "Listening on pipes ok.");
pce->reiRtmEntity.RtmInstanceId = 0;
#ifdef IPV6_DLL
pce->reiRtmEntity.AddressFamily = AF_INET6;
#else
pce->reiRtmEntity.AddressFamily = AF_INET;
#endif
pce->reiRtmEntity.EntityId.EntityProtocolId = PROTO_IP_XORPRTM;
pce->reiRtmEntity.EntityId.EntityInstanceId = 0;
dwErr = RtmRegisterEntity(
&pce->reiRtmEntity,
NULL,
RTM_CallbackEvent,
TRUE,
&pce->rrpRtmProfile,
&pce->hRtmHandle);
if (dwErr != NO_ERROR) {
TRACE1(CONFIGURATION, "Error %u registering with RTM", dwErr);
break;
}
TRACE0(ANY, "registered entity ok.");
dwErr = RtmRegisterForChangeNotification(
pce->hRtmHandle,
RTM_VIEW_MASK_UCAST,
RTM_CHANGE_TYPE_ALL,
NULL,
&pce->hRtmNotificationHandle);
if (dwErr != NO_ERROR) {
TRACE1(CONFIGURATION,
"Error %u registering for change with RTM", dwErr);
break;
}
TRACE0(ANY, "registered rtm changes ok.");
pce->iscStatus = XORPRTM_STATUS_RUNNING;
} while (FALSE);
if (dwErr != NO_ERROR) {
TRACE0(ANY, "init failed, cleaning up.");
CE_Cleanup(pce);
} else {
TRACE0(ANY, "Leaving init ok ");
}
return dwErr;
}
