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 #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
check_name(args)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 (rpc) {
49 if (strcmp(rpc->r_name, name) == 0) {
50 return (1);
51 }
52 for (aliasp = rpc->r_aliases; *aliasp != 0; aliasp++) {
53 if (strcmp(*aliasp, name) == 0) {
54 return (1);
55 }
56 }
57 return (0);
58 } else {
59 /*
60 * NSS2: nscd is running.
61 */
62 return (_nss_nis_check_name_aliases(args,
63 (const char *)args->buf.buffer,
64 strlen(args->buf.buffer)));
65
66 }
67 }
68
69 static mutex_t no_byname_lock = DEFAULTMUTEX;
70 static int no_byname_map = 0;
71
72 static nss_status_t
getbyname(be,a)73 getbyname(be, a)
74 nis_backend_ptr_t be;
75 void *a;
76 {
77 nss_XbyY_args_t *argp = (nss_XbyY_args_t *)a;
78 int no_map;
79 sigset_t oldmask, newmask;
80
81 (void) sigfillset(&newmask);
82 (void) thr_sigsetmask(SIG_SETMASK, &newmask, &oldmask);
83 (void) mutex_lock(&no_byname_lock);
84 no_map = no_byname_map;
85 (void) mutex_unlock(&no_byname_lock);
86 (void) thr_sigsetmask(SIG_SETMASK, &oldmask, (sigset_t *)NULL);
87
88 if (no_map == 0) {
89 int yp_status;
90 nss_status_t res;
91
92 res = _nss_nis_lookup(be, argp, 1, "rpc.byname",
93 argp->key.name, &yp_status);
94 if (yp_status == YPERR_MAP) {
95 (void) sigfillset(&newmask);
96 (void) thr_sigsetmask(SIG_SETMASK, &newmask, &oldmask);
97 (void) mutex_lock(&no_byname_lock);
98 no_byname_map = 1;
99 (void) mutex_unlock(&no_byname_lock);
100 (void) thr_sigsetmask(SIG_SETMASK, &oldmask,
101 (sigset_t *)NULL);
102 } else /* if (res == NSS_SUCCESS) <==== */ {
103 return (res);
104 }
105 }
106
107 return (_nss_nis_XY_all(be, argp, 1, argp->key.name, check_name));
108 }
109
110 static nss_status_t
getbynumber(be,a)111 getbynumber(be, a)
112 nis_backend_ptr_t be;
113 void *a;
114 {
115 nss_XbyY_args_t *argp = (nss_XbyY_args_t *)a;
116 char numstr[12];
117
118 (void) sprintf(numstr, "%d", argp->key.number);
119 return (_nss_nis_lookup(be, argp, 1, "rpc.bynumber", numstr, 0));
120 }
121
122 static nis_backend_op_t rpc_ops[] = {
123 _nss_nis_destr,
124 _nss_nis_endent,
125 _nss_nis_setent,
126 _nss_nis_getent_netdb,
127 getbyname,
128 getbynumber
129 };
130
131 /*ARGSUSED*/
132 nss_backend_t *
_nss_nis_rpc_constr(dummy1,dummy2,dummy3)133 _nss_nis_rpc_constr(dummy1, dummy2, dummy3)
134 const char *dummy1, *dummy2, *dummy3;
135 {
136 return (_nss_nis_constr(rpc_ops,
137 sizeof (rpc_ops) / sizeof (rpc_ops[0]),
138 "rpc.bynumber"));
139 }
140