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 * $FreeBSD: src/lib/libc/net/nss_compat.c,v 1.3 2004/03/30 15:56:15 nectar Exp $
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 _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 _pthread_once(&_term_once_##x, _term_create_##x); \
68 _pthread_setspecific(_term_key_##x, y); \
72 #define CHECK_TERMINATOR(x) \
73 (!__isthreaded || _pthread_main_np() ? \
75 (_pthread_once(&_term_once_##x, _term_create_##x), \
76 _pthread_getspecific(_term_key_##x)))
80 DECLARE_TERMINATOR(group);
84 __nss_compat_getgrnam_r(void *retval, void *mdata, va_list ap)
86 int (*fn)(const char *, struct group *, char *, size_t, int *);
92 enum nss_status status;
95 name = va_arg(ap, const char *);
96 grp = va_arg(ap, struct group *);
97 buffer = va_arg(ap, char *);
98 bufsize = va_arg(ap, size_t);
99 errnop = va_arg(ap, int *);
100 status = fn(name, grp, buffer, bufsize, errnop);
101 status = __nss_compat_result(status, *errnop);
102 if (status == NS_SUCCESS)
103 *(struct group **)retval = grp;
109 __nss_compat_getgrgid_r(void *retval, void *mdata, va_list ap)
111 int (*fn)(gid_t, struct group *, char *, size_t, int *);
117 enum nss_status status;
120 gid = va_arg(ap, gid_t);
121 grp = va_arg(ap, struct group *);
122 buffer = va_arg(ap, char *);
123 bufsize = va_arg(ap, size_t);
124 errnop = va_arg(ap, int *);
125 status = fn(gid, grp, buffer, bufsize, errnop);
126 status = __nss_compat_result(status, *errnop);
127 if (status == NS_SUCCESS)
128 *(struct group **)retval = grp;
134 __nss_compat_getgrent_r(void *retval, void *mdata, va_list ap)
136 int (*fn)(struct group *, char *, size_t, int *);
141 enum nss_status status;
143 if (CHECK_TERMINATOR(group))
144 return (NS_NOTFOUND);
146 grp = va_arg(ap, struct group *);
147 buffer = va_arg(ap, char *);
148 bufsize = va_arg(ap, size_t);
149 errnop = va_arg(ap, int *);
150 status = fn(grp, buffer, bufsize, errnop);
151 status = __nss_compat_result(status, *errnop);
152 if (status == NS_SUCCESS)
153 *(struct group **)retval = grp;
154 else if (status != NS_RETURN)
155 SET_TERMINATOR(group, &terminator);
161 __nss_compat_setgrent(void *retval, void *mdata, va_list ap)
164 SET_TERMINATOR(group, NULL);
165 ((int (*)(void))mdata)();
171 __nss_compat_endgrent(void *retval, void *mdata, va_list ap)
174 SET_TERMINATOR(group, NULL);
175 ((int (*)(void))mdata)();
181 DECLARE_TERMINATOR(passwd);
185 __nss_compat_getpwnam_r(void *retval, void *mdata, va_list ap)
187 int (*fn)(const char *, struct passwd *, char *, size_t, int *);
193 enum nss_status status;
196 name = va_arg(ap, const char *);
197 pwd = va_arg(ap, struct passwd *);
198 buffer = va_arg(ap, char *);
199 bufsize = va_arg(ap, size_t);
200 errnop = va_arg(ap, int *);
201 status = fn(name, pwd, buffer, bufsize, errnop);
202 status = __nss_compat_result(status, *errnop);
203 if (status == NS_SUCCESS)
204 *(struct passwd **)retval = pwd;
210 __nss_compat_getpwuid_r(void *retval, void *mdata, va_list ap)
212 int (*fn)(uid_t, struct passwd *, char *, size_t, int *);
218 enum nss_status status;
221 uid = va_arg(ap, uid_t);
222 pwd = va_arg(ap, struct passwd *);
223 buffer = va_arg(ap, char *);
224 bufsize = va_arg(ap, size_t);
225 errnop = va_arg(ap, int *);
226 status = fn(uid, pwd, buffer, bufsize, errnop);
227 status = __nss_compat_result(status, *errnop);
228 if (status == NS_SUCCESS)
229 *(struct passwd **)retval = pwd;
235 __nss_compat_getpwent_r(void *retval, void *mdata, va_list ap)
237 int (*fn)(struct passwd *, char *, size_t, int *);
242 enum nss_status status;
244 if (CHECK_TERMINATOR(passwd))
245 return (NS_NOTFOUND);
247 pwd = va_arg(ap, struct passwd *);
248 buffer = va_arg(ap, char *);
249 bufsize = va_arg(ap, size_t);
250 errnop = va_arg(ap, int *);
251 status = fn(pwd, buffer, bufsize, errnop);
252 status = __nss_compat_result(status, *errnop);
253 if (status == NS_SUCCESS)
254 *(struct passwd **)retval = pwd;
255 else if (status != NS_RETURN)
256 SET_TERMINATOR(passwd, &terminator);
262 __nss_compat_setpwent(void *retval, void *mdata, va_list ap)
265 SET_TERMINATOR(passwd, NULL);
266 ((int (*)(void))mdata)();
272 __nss_compat_endpwent(void *retval, void *mdata, va_list ap)
275 SET_TERMINATOR(passwd, NULL);
276 ((int (*)(void))mdata)();