1 /* 2 * services/outbound_list.c - keep list of outbound serviced queries. 3 * 4 * Copyright (c) 2007, NLnet Labs. All rights reserved. 5 * 6 * This software is open source. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 12 * Redistributions of source code must retain the above copyright notice, 13 * this list of conditions and the following disclaimer. 14 * 15 * Redistributions in binary form must reproduce the above copyright notice, 16 * this list of conditions and the following disclaimer in the documentation 17 * and/or other materials provided with the distribution. 18 * 19 * Neither the name of the NLNET LABS nor the names of its contributors may 20 * be used to endorse or promote products derived from this software without 21 * specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 24 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 25 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 26 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 27 * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 28 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED 29 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 30 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 31 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 32 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 33 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 34 */ 35 36 /** 37 * \file 38 * 39 * This file contains functions to help a module keep track of the 40 * queries it has outstanding to authoritative servers. 41 */ 42 #include "config.h" 43 #include <sys/time.h> 44 #include "services/outbound_list.h" 45 #include "services/outside_network.h" 46 47 void 48 outbound_list_init(struct outbound_list* list) 49 { 50 list->first = NULL; 51 } 52 53 void 54 outbound_list_clear(struct outbound_list* list) 55 { 56 struct outbound_entry *p, *np; 57 p = list->first; 58 while(p) { 59 np = p->next; 60 outnet_serviced_query_stop(p->qsent, p); 61 /* in region, no free needed */ 62 p = np; 63 } 64 outbound_list_init(list); 65 } 66 67 void 68 outbound_list_insert(struct outbound_list* list, struct outbound_entry* e) 69 { 70 if(list->first) 71 list->first->prev = e; 72 e->next = list->first; 73 e->prev = NULL; 74 list->first = e; 75 } 76 77 void 78 outbound_list_remove(struct outbound_list* list, struct outbound_entry* e) 79 { 80 if(!e) 81 return; 82 outnet_serviced_query_stop(e->qsent, e); 83 if(e->next) 84 e->next->prev = e->prev; 85 if(e->prev) 86 e->prev->next = e->next; 87 else list->first = e->next; 88 /* in region, no free needed */ 89 } 90