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 /* 23 * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 /* 28 * nis/getrpcent.c -- "nis" backend for nsswitch "rpc" database 29 */ 30 31 #pragma ident "%Z%%M% %I% %E% SMI" 32 33 #include "nis_common.h" 34 #include <stdio.h> 35 #include <string.h> 36 #include <signal.h> 37 #include <synch.h> 38 #include <rpc/rpcent.h> 39 #include <rpcsvc/ypclnt.h> 40 #include <thread.h> 41 42 static int 43 check_name(args) 44 nss_XbyY_args_t *args; 45 { 46 struct rpcent *rpc = (struct rpcent *)args->returnval; 47 const char *name = args->key.name; 48 char **aliasp; 49 50 if (rpc) { 51 if (strcmp(rpc->r_name, name) == 0) { 52 return (1); 53 } 54 for (aliasp = rpc->r_aliases; *aliasp != 0; aliasp++) { 55 if (strcmp(*aliasp, name) == 0) { 56 return (1); 57 } 58 } 59 return (0); 60 } else { 61 /* 62 * NSS2: nscd is running. 63 */ 64 return (_nss_nis_check_name_aliases(args, 65 (const char *)args->buf.buffer, 66 strlen(args->buf.buffer))); 67 68 } 69 } 70 71 static mutex_t no_byname_lock = DEFAULTMUTEX; 72 static int no_byname_map = 0; 73 74 static nss_status_t 75 getbyname(be, a) 76 nis_backend_ptr_t be; 77 void *a; 78 { 79 nss_XbyY_args_t *argp = (nss_XbyY_args_t *)a; 80 int no_map; 81 sigset_t oldmask, newmask; 82 83 (void) sigfillset(&newmask); 84 (void) thr_sigsetmask(SIG_SETMASK, &newmask, &oldmask); 85 (void) mutex_lock(&no_byname_lock); 86 no_map = no_byname_map; 87 (void) mutex_unlock(&no_byname_lock); 88 (void) thr_sigsetmask(SIG_SETMASK, &oldmask, (sigset_t *)NULL); 89 90 if (no_map == 0) { 91 int yp_status; 92 nss_status_t res; 93 94 res = _nss_nis_lookup(be, argp, 1, "rpc.byname", 95 argp->key.name, &yp_status); 96 if (yp_status == YPERR_MAP) { 97 (void) sigfillset(&newmask); 98 (void) thr_sigsetmask(SIG_SETMASK, &newmask, &oldmask); 99 (void) mutex_lock(&no_byname_lock); 100 no_byname_map = 1; 101 (void) mutex_unlock(&no_byname_lock); 102 (void) thr_sigsetmask(SIG_SETMASK, &oldmask, 103 (sigset_t *)NULL); 104 } else /* if (res == NSS_SUCCESS) <==== */ { 105 return (res); 106 } 107 } 108 109 return (_nss_nis_XY_all(be, argp, 1, argp->key.name, check_name)); 110 } 111 112 static nss_status_t 113 getbynumber(be, a) 114 nis_backend_ptr_t be; 115 void *a; 116 { 117 nss_XbyY_args_t *argp = (nss_XbyY_args_t *)a; 118 char numstr[12]; 119 120 (void) sprintf(numstr, "%d", argp->key.number); 121 return (_nss_nis_lookup(be, argp, 1, "rpc.bynumber", numstr, 0)); 122 } 123 124 static nis_backend_op_t rpc_ops[] = { 125 _nss_nis_destr, 126 _nss_nis_endent, 127 _nss_nis_setent, 128 _nss_nis_getent_netdb, 129 getbyname, 130 getbynumber 131 }; 132 133 /*ARGSUSED*/ 134 nss_backend_t * 135 _nss_nis_rpc_constr(dummy1, dummy2, dummy3) 136 const char *dummy1, *dummy2, *dummy3; 137 { 138 return (_nss_nis_constr(rpc_ops, 139 sizeof (rpc_ops) / sizeof (rpc_ops[0]), 140 "rpc.bynumber")); 141 } 142