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
check_name(args)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
getbyname(be,a)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
getbynumber(be,a)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 *
_nss_nis_rpc_constr(dummy1,dummy2,dummy3)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