/**
* \brief Removes a zombie domain.
*/
static void cleanup_domain(domainid_t domainid)
{
errval_t err;
struct ps_entry *ps = ps_get(domainid);
assert(ps != NULL);
// Tell all waiters of exit and free list as we go
for(struct ps_waiter *w = ps->waiters; w != NULL;) {
debug_printf("informing waiter\n");
err = w->binding->tx_vtbl.wait_response
(w->binding, NOP_CONT, ps->exitcode, SYS_ERR_OK);
if(err_is_fail(err)) {
DEBUG_ERR(err, "wait_response");
}
struct ps_waiter *oldw = w;
w = w->next;
free(oldw);
}
ps->waiters = NULL;
// Cleanup rest of ps entry
free(ps->argbuf);
ps_remove(domainid);
}
/*
* Add the given pblock to the list of outstanding persistent searches.
* Then, start a thread to send the results to the client as they
* are dispatched by add, modify, and modrdn operations.
*/
void
ps_add( Slapi_PBlock *pb, ber_int_t changetypes, int send_entchg_controls )
{
PSearch *ps;
if ( PS_IS_INITIALIZED() && NULL != pb ) {
/* Create the new node */
ps = psearch_alloc();
ps->ps_pblock = pb;
ps->ps_changetypes = changetypes;
ps->ps_send_entchg_controls = send_entchg_controls;
/* Add it to the head of the list of persistent searches */
ps_add_ps( ps );
/* Start a thread to send the results */
ps->ps_tid = PR_CreateThread( PR_USER_THREAD, ps_send_results,
(void *) ps, PR_PRIORITY_NORMAL, PR_GLOBAL_THREAD,
PR_UNJOINABLE_THREAD, SLAPD_DEFAULT_THREAD_STACKSIZE );
/* Checking if the thread is succesfully created and
* if the thread is not created succesfully.... we send
* error messages to the Log file
*/
if(NULL == (ps->ps_tid)){
int prerr;
prerr = PR_GetError();
LDAPDebug(LDAP_DEBUG_ANY,"persistent search PR_CreateThread()failed in the "
"ps_add function: " SLAPI_COMPONENT_NAME_NSPR " error %d (%s)\n",
prerr, slapd_pr_strerror(prerr), 0);
/* Now remove the ps from the list so call the function ps_remove */
ps_remove(ps);
PR_DestroyLock ( ps->ps_lock );
ps->ps_lock = NULL;
slapi_ch_free((void **) &ps->ps_pblock );
slapi_ch_free((void **) &ps );
}
}
}
/*
* Thread routine for sending search results to a client
* which is persistently waiting for them.
*
* This routine will terminate when either (a) the ps_complete
* flag is set, or (b) the associated operation is abandoned.
* In any case, the thread won't notice until it wakes from
* sleeping on the ps_list condition variable, so it needs
* to be awakened.
*/
static void
ps_send_results( void *arg )
{
PSearch *ps = (PSearch *)arg;
PSEQNode *peq, *peqnext;
struct slapi_filter *filter = 0;
char *base = NULL;
Slapi_DN *sdn = NULL;
char *fstr = NULL;
char **pbattrs = NULL;
int conn_acq_flag = 0;
g_incr_active_threadcnt();
/* need to acquire a reference to this connection so that it will not
be released or cleaned up out from under us */
PR_Lock( ps->ps_pblock->pb_conn->c_mutex );
conn_acq_flag = connection_acquire_nolock(ps->ps_pblock->pb_conn);
PR_Unlock( ps->ps_pblock->pb_conn->c_mutex );
if (conn_acq_flag) {
slapi_log_error(SLAPI_LOG_CONNS, "Persistent Search",
"conn=%" NSPRIu64 " op=%d Could not acquire the connection - psearch aborted\n",
ps->ps_pblock->pb_conn->c_connid, ps->ps_pblock->pb_op->o_opid);
}
PR_Lock( psearch_list->pl_cvarlock );
while ( (conn_acq_flag == 0) && !ps->ps_complete ) {
/* Check for an abandoned operation */
if ( ps->ps_pblock->pb_op == NULL || slapi_op_abandoned( ps->ps_pblock ) ) {
slapi_log_error(SLAPI_LOG_CONNS, "Persistent Search",
"conn=%" NSPRIu64 " op=%d The operation has been abandoned\n",
ps->ps_pblock->pb_conn->c_connid, ps->ps_pblock->pb_op->o_opid);
break;
}
if ( NULL == ps->ps_eq_head ) {
/* Nothing to do */
PR_WaitCondVar( psearch_list->pl_cvar, PR_INTERVAL_NO_TIMEOUT );
} else {
/* dequeue the item */
int attrsonly;
char **attrs;
LDAPControl **ectrls;
Slapi_Entry *ec;
Slapi_Filter *f = NULL;
PR_Lock( ps->ps_lock );
peq = ps->ps_eq_head;
ps->ps_eq_head = peq->pe_next;
if ( NULL == ps->ps_eq_head ) {
ps->ps_eq_tail = NULL;
}
PR_Unlock( ps->ps_lock );
/* Get all the information we need to send the result */
ec = peq->pe_entry;
slapi_pblock_get( ps->ps_pblock, SLAPI_SEARCH_ATTRS, &attrs );
slapi_pblock_get( ps->ps_pblock, SLAPI_SEARCH_ATTRSONLY, &attrsonly );
if ( !ps->ps_send_entchg_controls || peq->pe_ctrls[0] == NULL ) {
ectrls = NULL;
} else {
ectrls = peq->pe_ctrls;
}
/*
* Send the result. Since send_ldap_search_entry can block for
* up to 30 minutes, we relinquish all locks before calling it.
*/
PR_Unlock(psearch_list->pl_cvarlock);
/*
* The entry is in the right scope and matches the filter
* but we need to redo the filter test here to check access
* controls. See the comments at the slapi_filter_test()
* call in ps_service_persistent_searches().
*/
slapi_pblock_get( ps->ps_pblock, SLAPI_SEARCH_FILTER, &f );
/* See if the entry meets the filter and ACL criteria */
if ( slapi_vattr_filter_test( ps->ps_pblock, ec, f,
1 /* verify_access */ ) == 0 ) {
int rc = 0;
slapi_pblock_set( ps->ps_pblock, SLAPI_SEARCH_RESULT_ENTRY, ec );
rc = send_ldap_search_entry( ps->ps_pblock, ec,
ectrls, attrs, attrsonly );
if (rc) {
slapi_log_error(SLAPI_LOG_CONNS, "Persistent Search",
"conn=%" NSPRIu64 " op=%d Error %d sending entry %s with op status %d\n",
ps->ps_pblock->pb_conn->c_connid, ps->ps_pblock->pb_op->o_opid,
rc, slapi_entry_get_dn_const(ec), ps->ps_pblock->pb_op->o_status);
}
}
PR_Lock(psearch_list->pl_cvarlock);
/* Deallocate our wrapper for this entry */
pe_ch_free( &peq );
}
}
PR_Unlock( psearch_list->pl_cvarlock );
ps_remove( ps );
/* indicate the end of search */
plugin_call_plugins( ps->ps_pblock , SLAPI_PLUGIN_POST_SEARCH_FN );
/* free things from the pblock that were not free'd in do_search() */
/* we strdup'd this in search.c - need to free */
slapi_pblock_get( ps->ps_pblock, SLAPI_ORIGINAL_TARGET_DN, &base );
slapi_pblock_set( ps->ps_pblock, SLAPI_ORIGINAL_TARGET_DN, NULL );
slapi_ch_free_string(&base);
/* Free SLAPI_SEARCH_* before deleting op since those are held by op */
slapi_pblock_get( ps->ps_pblock, SLAPI_SEARCH_TARGET_SDN, &sdn );
slapi_pblock_set( ps->ps_pblock, SLAPI_SEARCH_TARGET_SDN, NULL );
slapi_sdn_free(&sdn);
slapi_pblock_get( ps->ps_pblock, SLAPI_SEARCH_STRFILTER, &fstr );
slapi_pblock_set( ps->ps_pblock, SLAPI_SEARCH_STRFILTER, NULL );
slapi_ch_free_string(&fstr);
slapi_pblock_get( ps->ps_pblock, SLAPI_SEARCH_ATTRS, &pbattrs );
slapi_pblock_set( ps->ps_pblock, SLAPI_SEARCH_ATTRS, NULL );
if ( pbattrs != NULL )
{
charray_free( pbattrs );
}
slapi_pblock_get(ps->ps_pblock, SLAPI_SEARCH_FILTER, &filter );
slapi_pblock_set(ps->ps_pblock, SLAPI_SEARCH_FILTER, NULL );
slapi_filter_free(filter, 1);
/* Clean up the connection structure */
PR_Lock( ps->ps_pblock->pb_conn->c_mutex );
slapi_log_error(SLAPI_LOG_CONNS, "Persistent Search",
"conn=%" NSPRIu64 " op=%d Releasing the connection and operation\n",
ps->ps_pblock->pb_conn->c_connid, ps->ps_pblock->pb_op->o_opid);
/* Delete this op from the connection's list */
connection_remove_operation( ps->ps_pblock->pb_conn, ps->ps_pblock->pb_op );
operation_free(&(ps->ps_pblock->pb_op),ps->ps_pblock->pb_conn);
ps->ps_pblock->pb_op=NULL;
/* Decrement the connection refcnt */
if (conn_acq_flag == 0) { /* we acquired it, so release it */
connection_release_nolock (ps->ps_pblock->pb_conn);
}
PR_Unlock( ps->ps_pblock->pb_conn->c_mutex );
PR_DestroyLock ( ps->ps_lock );
ps->ps_lock = NULL;
slapi_ch_free((void **) &ps->ps_pblock );
for ( peq = ps->ps_eq_head; peq; peq = peqnext) {
peqnext = peq->pe_next;
pe_ch_free( &peq );
}
slapi_ch_free((void **) &ps );
g_decr_active_threadcnt();
}
void ps_removeset(pageset_t ps, pageset_t set) {
for (int i = ps_size(set); i--; )
ps_remove(ps, ps_get(set, i));
}