2 * Copyright (c) 2003 Networks Associates Technology, Inc.
5 * This software was developed for the FreeBSD Project by
6 * Jacques A. Vidrine, Safeport Network Services, and Network
7 * Associates Laboratories, the Security Research Division of Network
8 * Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035
9 * ("CBOSS"), as part of the DARPA CHATS research program.
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * Compatibility shims for the GNU C Library-style nsswitch interface.
34 #include <sys/cdefs.h>
35 __FBSDID("$FreeBSD$");
37 #include "namespace.h"
38 #include <sys/param.h>
42 #include <pthread_np.h>
43 #include "un-namespace.h"
44 #include "libc_private.h"
50 static int terminator;
52 #define DECLARE_TERMINATOR(x) \
53 static pthread_key_t _term_key_##x; \
55 _term_create_##x(void) \
57 (void)_pthread_key_create(&_term_key_##x, NULL); \
59 static void *_term_main_##x; \
60 static pthread_once_t _term_once_##x = PTHREAD_ONCE_INIT
62 #define SET_TERMINATOR(x, y) \
64 if (!__isthreaded || _pthread_main_np()) \
65 _term_main_##x = (y); \
67 (void)_pthread_once(&_term_once_##x, _term_create_##x); \
68 (void)_pthread_setspecific(_term_key_##x, y); \
72 #define CHECK_TERMINATOR(x) \
73 (!__isthreaded || _pthread_main_np() ? \
75 ((void)_pthread_once(&_term_once_##x, _term_create_##x), \
76 _pthread_getspecific(_term_key_##x)))
80 DECLARE_TERMINATOR(group);
82 int __nss_compat_getgrnam_r(void *retval, void *mdata, va_list ap);
83 int __nss_compat_getgrgid_r(void *retval, void *mdata, va_list ap);
84 int __nss_compat_getgrent_r(void *retval, void *mdata, va_list ap);
85 int __nss_compat_setgrent(void *retval, void *mdata, va_list ap);
86 int __nss_compat_endgrent(void *retval, void *mdata, va_list ap);
87 int __nss_compat_getpwnam_r(void *retval, void *mdata, va_list ap);
88 int __nss_compat_getpwuid_r(void *retval, void *mdata, va_list ap);
89 int __nss_compat_getpwent_r(void *retval, void *mdata, va_list ap);
90 int __nss_compat_setpwent(void *retval, void *mdata, va_list ap);
91 int __nss_compat_endpwent(void *retval, void *mdata, va_list ap);
94 __nss_compat_getgrnam_r(void *retval, void *mdata, va_list ap)
96 int (*fn)(const char *, struct group *, char *, size_t, int *);
100 int *errnop, ns_status;
102 enum nss_status nss_status;
105 name = va_arg(ap, const char *);
106 grp = va_arg(ap, struct group *);
107 buffer = va_arg(ap, char *);
108 bufsize = va_arg(ap, size_t);
109 errnop = va_arg(ap, int *);
110 nss_status = fn(name, grp, buffer, bufsize, errnop);
111 ns_status = __nss_compat_result(nss_status, *errnop);
112 if (ns_status == NS_SUCCESS)
113 *(struct group **)retval = grp;
119 __nss_compat_getgrgid_r(void *retval, void *mdata, va_list ap)
121 int (*fn)(gid_t, struct group *, char *, size_t, int *);
125 int *errnop, ns_status;
127 enum nss_status nss_status;
130 gid = va_arg(ap, gid_t);
131 grp = va_arg(ap, struct group *);
132 buffer = va_arg(ap, char *);
133 bufsize = va_arg(ap, size_t);
134 errnop = va_arg(ap, int *);
135 nss_status = fn(gid, grp, buffer, bufsize, errnop);
136 ns_status = __nss_compat_result(nss_status, *errnop);
137 if (ns_status == NS_SUCCESS)
138 *(struct group **)retval = grp;
144 __nss_compat_getgrent_r(void *retval, void *mdata, va_list ap)
146 int (*fn)(struct group *, char *, size_t, int *);
149 int *errnop, ns_status;
151 enum nss_status nss_status;
153 if (CHECK_TERMINATOR(group))
154 return (NS_NOTFOUND);
156 grp = va_arg(ap, struct group *);
157 buffer = va_arg(ap, char *);
158 bufsize = va_arg(ap, size_t);
159 errnop = va_arg(ap, int *);
160 nss_status = fn(grp, buffer, bufsize, errnop);
161 ns_status = __nss_compat_result(nss_status, *errnop);
162 if (ns_status == NS_SUCCESS)
163 *(struct group **)retval = grp;
164 else if (ns_status != NS_RETURN)
165 SET_TERMINATOR(group, &terminator);
171 __nss_compat_setgrent(void *retval, void *mdata, va_list ap)
174 SET_TERMINATOR(group, NULL);
175 ((int (*)(void))mdata)();
181 __nss_compat_endgrent(void *retval, void *mdata, va_list ap)
184 SET_TERMINATOR(group, NULL);
185 ((int (*)(void))mdata)();
191 DECLARE_TERMINATOR(passwd);
195 __nss_compat_getpwnam_r(void *retval, void *mdata, va_list ap)
197 int (*fn)(const char *, struct passwd *, char *, size_t, int *);
201 int *errnop, ns_status;
203 enum nss_status nss_status;
206 name = va_arg(ap, const char *);
207 pwd = va_arg(ap, struct passwd *);
208 buffer = va_arg(ap, char *);
209 bufsize = va_arg(ap, size_t);
210 errnop = va_arg(ap, int *);
211 nss_status = fn(name, pwd, buffer, bufsize, errnop);
212 ns_status = __nss_compat_result(nss_status, *errnop);
213 if (ns_status == NS_SUCCESS)
214 *(struct passwd **)retval = pwd;
220 __nss_compat_getpwuid_r(void *retval, void *mdata, va_list ap)
222 int (*fn)(uid_t, struct passwd *, char *, size_t, int *);
226 int *errnop, ns_status;
228 enum nss_status nss_status;
231 uid = va_arg(ap, uid_t);
232 pwd = va_arg(ap, struct passwd *);
233 buffer = va_arg(ap, char *);
234 bufsize = va_arg(ap, size_t);
235 errnop = va_arg(ap, int *);
236 nss_status = fn(uid, pwd, buffer, bufsize, errnop);
237 ns_status = __nss_compat_result(nss_status, *errnop);
238 if (ns_status == NS_SUCCESS)
239 *(struct passwd **)retval = pwd;
245 __nss_compat_getpwent_r(void *retval, void *mdata, va_list ap)
247 int (*fn)(struct passwd *, char *, size_t, int *);
250 int *errnop, ns_status;
252 enum nss_status nss_status;
254 if (CHECK_TERMINATOR(passwd))
255 return (NS_NOTFOUND);
257 pwd = va_arg(ap, struct passwd *);
258 buffer = va_arg(ap, char *);
259 bufsize = va_arg(ap, size_t);
260 errnop = va_arg(ap, int *);
261 nss_status = fn(pwd, buffer, bufsize, errnop);
262 ns_status = __nss_compat_result(nss_status, *errnop);
263 if (ns_status == NS_SUCCESS)
264 *(struct passwd **)retval = pwd;
265 else if (ns_status != NS_RETURN)
266 SET_TERMINATOR(passwd, &terminator);
272 __nss_compat_setpwent(void *retval, void *mdata, va_list ap)
275 SET_TERMINATOR(passwd, NULL);
276 ((int (*)(void))mdata)();
282 __nss_compat_endpwent(void *retval, void *mdata, va_list ap)
285 SET_TERMINATOR(passwd, NULL);
286 ((int (*)(void))mdata)();