1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2006 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 * 25 * lib/libsocket/inet/getservent_r.c 26 * 27 * This file defines and implements the re-entrant enumeration routines for 28 * services: setservent(), getservent_r(), and endservent(). They consult 29 * the switch policy directly and do not "share" their enumeration state 30 * nor the stayopen flag with the implentation of the more common 31 * getservbyname_r()/getservbyport_r(). The latter follows a tortuous 32 * route in order to be consistent with netdir_getbyYY() (see 33 * getservbyname_r.c and lib/libnsl/nss/netdir_inet.c). 34 */ 35 36 #include <sys/types.h> 37 #include <nss_dbdefs.h> 38 39 /* 40 * str2servent is implemented in libnsl, libnsl/nss/netdir_inet.c, since 41 * the "engine" of the new gethost/getserv/netdir lives in libnsl. 42 */ 43 int str2servent(const char *, int, void *, char *, int); 44 45 /* 46 * Unsynchronized, but it affects only 47 * efficiency, not correctness. 48 */ 49 static int services_stayopen; 50 static DEFINE_NSS_DB_ROOT(db_root); 51 static DEFINE_NSS_GETENT(context); 52 53 void _nss_initf_services(nss_db_params_t * p)54 _nss_initf_services(nss_db_params_t *p) 55 { 56 p->name = NSS_DBNAM_SERVICES; 57 p->default_config = NSS_DEFCONF_SERVICES; 58 } 59 60 int setservent(int stay)61 setservent(int stay) 62 { 63 services_stayopen |= stay; 64 nss_setent(&db_root, _nss_initf_services, &context); 65 return (0); 66 } 67 68 int endservent()69 endservent() 70 { 71 services_stayopen = 0; 72 nss_endent(&db_root, _nss_initf_services, &context); 73 nss_delete(&db_root); 74 return (0); 75 } 76 77 struct servent * getservent_r(struct servent * result,char * buffer,int buflen)78 getservent_r(struct servent *result, char *buffer, int buflen) 79 { 80 nss_XbyY_args_t arg; 81 nss_status_t res; 82 83 NSS_XbyY_INIT(&arg, result, buffer, buflen, str2servent); 84 /* 85 * Setting proto to NULL here is a bit of a hack since we share 86 * the parsing code in the NIS+ backend with our getservbyYY() 87 * brethren who can search on 1-1/2 key. If they pass a NULL 88 * proto, the parsing code deals with it by picking the protocol 89 * from the first NIS+ matching object and combining all entries 90 * with "that" proto field. NIS+ is the only name service, so far, 91 * that can return multiple entries on a lookup. 92 */ 93 arg.key.serv.proto = NULL; 94 /* === No stayopen flag; of course you stay open for iteration */ 95 res = nss_getent(&db_root, _nss_initf_services, &context, &arg); 96 arg.status = res; 97 return (struct servent *)NSS_XbyY_FINI(&arg); 98 } 99