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, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright (c) 1986-1994 by Sun Microsystems Inc. 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 #pragma ident "%Z%%M% %I% %E% SMI" 37 38 #include <sys/types.h> 39 #include <nss_dbdefs.h> 40 41 /* 42 * str2servent is implemented in libnsl, libnsl/nss/netdir_inet.c, since 43 * the "engine" of the new gethost/getserv/netdir lives in libnsl. 44 */ 45 int str2servent(const char *, int, void *, char *, int); 46 47 /* 48 * Unsynchronized, but it affects only 49 * efficiency, not correctness. 50 */ 51 static int services_stayopen; 52 static DEFINE_NSS_DB_ROOT(db_root); 53 static DEFINE_NSS_GETENT(context); 54 55 static void 56 _nss_initf_services(nss_db_params_t *p) 57 { 58 p->name = NSS_DBNAM_SERVICES; 59 p->default_config = NSS_DEFCONF_SERVICES; 60 } 61 62 int 63 setservent(int stay) 64 { 65 services_stayopen |= stay; 66 nss_setent(&db_root, _nss_initf_services, &context); 67 return (0); 68 } 69 70 int 71 endservent() 72 { 73 services_stayopen = 0; 74 nss_endent(&db_root, _nss_initf_services, &context); 75 nss_delete(&db_root); 76 return (0); 77 } 78 79 struct servent * 80 getservent_r(struct servent *result, char *buffer, int buflen) 81 { 82 nss_XbyY_args_t arg; 83 nss_status_t res; 84 85 NSS_XbyY_INIT(&arg, result, buffer, buflen, str2servent); 86 /* 87 * Setting proto to NULL here is a bit of a hack since we share 88 * the parsing code in the NIS+ backend with our getservbyYY() 89 * brethren who can search on 1-1/2 key. If they pass a NULL 90 * proto, the parsing code deals with it by picking the protocol 91 * from the first NIS+ matching object and combining all entries 92 * with "that" proto field. NIS+ is the only name service, so far, 93 * that can return multiple entries on a lookup. 94 */ 95 arg.key.serv.proto = NULL; 96 /* === No stayopen flag; of course you stay open for iteration */ 97 res = nss_getent(&db_root, _nss_initf_services, &context, &arg); 98 arg.status = res; 99 return (struct servent *)NSS_XbyY_FINI(&arg); 100 } 101