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) 1988-1992 Sun Microsystems Inc 24 * All Rights Reserved. 25 * 26 * nis/getrpcent.c -- "nis" backend for nsswitch "rpc" database 27 */ 28 29 #pragma ident "%Z%%M% %I% %E% SMI" 30 31 #include "nis_common.h" 32 #include <stdio.h> 33 #include <string.h> 34 #include <signal.h> 35 #include <synch.h> 36 #include <rpc/rpcent.h> 37 #include <rpcsvc/ypclnt.h> 38 #include <thread.h> 39 40 static int 41 check_name(args) 42 nss_XbyY_args_t *args; 43 { 44 struct rpcent *rpc = (struct rpcent *) args->returnval; 45 const char *name = args->key.name; 46 char **aliasp; 47 48 if (strcmp(rpc->r_name, name) == 0) { 49 return (1); 50 } 51 for (aliasp = rpc->r_aliases; *aliasp != 0; aliasp++) { 52 if (strcmp(*aliasp, name) == 0) { 53 return (1); 54 } 55 } 56 return (0); 57 } 58 59 static mutex_t no_byname_lock = DEFAULTMUTEX; 60 static int no_byname_map = 0; 61 62 static nss_status_t 63 getbyname(be, a) 64 nis_backend_ptr_t be; 65 void *a; 66 { 67 nss_XbyY_args_t *argp = (nss_XbyY_args_t *) a; 68 int no_map; 69 sigset_t oldmask, newmask; 70 71 sigfillset(&newmask); 72 (void) _thr_sigsetmask(SIG_SETMASK, &newmask, &oldmask); 73 (void) _mutex_lock(&no_byname_lock); 74 no_map = no_byname_map; 75 (void) _mutex_unlock(&no_byname_lock); 76 (void) _thr_sigsetmask(SIG_SETMASK, &oldmask, (sigset_t*)NULL); 77 78 if (no_map == 0) { 79 int yp_status; 80 nss_status_t res; 81 82 res = _nss_nis_lookup(be, argp, 1, "rpc.byname", 83 argp->key.name, &yp_status); 84 if (yp_status == YPERR_MAP) { 85 sigfillset(&newmask); 86 _thr_sigsetmask(SIG_SETMASK, &newmask, &oldmask); 87 _mutex_lock(&no_byname_lock); 88 no_byname_map = 1; 89 _mutex_unlock(&no_byname_lock); 90 _thr_sigsetmask(SIG_SETMASK, &oldmask, (sigset_t*)NULL); 91 } else /* if (res == NSS_SUCCESS) <==== */ { 92 return (res); 93 } 94 } 95 96 return (_nss_nis_XY_all(be, argp, 1, argp->key.name, check_name)); 97 } 98 99 static nss_status_t 100 getbynumber(be, a) 101 nis_backend_ptr_t be; 102 void *a; 103 { 104 nss_XbyY_args_t *argp = (nss_XbyY_args_t *) a; 105 char numstr[12]; 106 107 sprintf(numstr, "%d", argp->key.number); 108 return (_nss_nis_lookup(be, argp, 1, "rpc.bynumber", numstr, 0)); 109 } 110 111 static nis_backend_op_t rpc_ops[] = { 112 _nss_nis_destr, 113 _nss_nis_endent, 114 _nss_nis_setent, 115 _nss_nis_getent_netdb, 116 getbyname, 117 getbynumber 118 }; 119 120 /*ARGSUSED*/ 121 nss_backend_t * 122 _nss_nis_rpc_constr(dummy1, dummy2, dummy3) 123 const char *dummy1, *dummy2, *dummy3; 124 { 125 return (_nss_nis_constr(rpc_ops, 126 sizeof (rpc_ops) / sizeof (rpc_ops[0]), 127 "rpc.bynumber")); 128 } 129