lib/libc/compat/gen/compat_getpwent.c

   1 /*      $NetBSD: compat_getpwent.c,v 1.2 2009/01/11 02:46:25 christos Exp $     */
   2
   3 /*-
   4  * Copyright (c) 2008 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Christos Zoulas.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  * 3. All advertising materials mentioning features or use of this software
  19  *    must display the following acknowledgement:
  20  *        This product includes software developed by the NetBSD
  21  *        Foundation, Inc. and its contributors.
  22  * 4. Neither the name of The NetBSD Foundation nor the names of its
  23  *    contributors may be used to endorse or promote products derived
  24  *    from this software without specific prior written permission.
  25  *
  26  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  27  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  28  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  29  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  30  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  31  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  32  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  33  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  34  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  35  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  36  * POSSIBILITY OF SUCH DAMAGE.
  37  */
  38 #include <sys/cdefs.h>
  39 #if defined(LIBC_SCCS) && !defined(lint)
  40 __RCSID("$NetBSD: compat_getpwent.c,v 1.2 2009/01/11 02:46:25 christos Exp $");
  41 #endif /* LIBC_SCCS and not lint */
  42
  43 #define __LIBC12_SOURCE__
  44
  45 #include "namespace.h"
  46 #include <stdint.h>
  47 #include <stdlib.h>
  48 #include <pwd.h>
  49 #include <compat/include/pwd.h>
  50
  51 __warn_references(getpwuid,
  52     "warning: reference to compatibility getpwuid(); include <pwd.h> to generate correct reference")
  53 __warn_references(getpwnam,
  54     "warning: reference to compatibility getpwnam(); include <pwd.h> to generate correct reference")
  55 __warn_references(getpwnam_r,
  56     "warning: reference to compatibility getpwnam_r(); include <pwd.h> to generate correct reference")
  57 __warn_references(getpwuid_r,
  58     "warning: reference to compatibility getpwuid_r(); include <pwd.h> to generate correct reference")
  59 __warn_references(getpwent,
  60     "warning: reference to compatibility getpwent(); include <pwd.h> to generate correct reference")
  61 #ifdef notdef /* for libutil */
  62 __warn_references(pw_scan,
  63     "warning: reference to compatibility pw_scan(); include <pwd.h> to generate correct reference")
  64 #endif
  65 __warn_references(getpwent_r,
  66     "warning: reference to compatibility getpwent_r(); include <pwd.h> to generate correct reference")
  67 __warn_references(pwcache_userdb,
  68     "warning: reference to compatibility pwcache_userdb(); include <pwd.h> to generate correct reference")
  69
  70 #ifdef __weak_alias
  71 __weak_alias(getpwent, _getpwent)
  72 __weak_alias(getpwent_r, _getpwent_r)
  73 __weak_alias(getpwuid, _getpwuid)
  74 __weak_alias(getpwuid_r, _getpwuid_r)
  75 __weak_alias(getpwnam, _getpwnam)
  76 __weak_alias(getpwnam_r, _getpwnam_r)
  77 __weak_alias(pwcache_userdb, _pwcache_userdb)
  78 #endif
  79
  80 static struct passwd50 *
  81 cvt(struct passwd *p)
  82 {
  83         struct passwd50 *q = (void *)p;
  84
  85         if (q == NULL) {
  86                 return NULL;
  87         }
  88         q->pw_change = (int32_t)p->pw_change;
  89         q->pw_class = p->pw_class;
  90         q->pw_gecos = p->pw_gecos;
  91         q->pw_dir = p->pw_dir;
  92         q->pw_shell = p->pw_shell;
  93         q->pw_expire = (int32_t)p->pw_expire;
  94         return q;
  95 }
  96
  97 struct passwd50 *
  98 getpwuid(uid_t uid)
  99 {
 100         return cvt(__getpwuid50(uid));
 101
 102 }
 103
 104 struct passwd50 *
 105 getpwnam(const char *name)
 106 {
 107         return cvt(__getpwnam50(name));
 108 }
 109
 110 int
 111 getpwnam_r(const char *name , struct passwd50 *p, char *buf, size_t len,
 112     struct passwd50 **q)
 113 {
 114         struct passwd px, *qx;
 115         int rv = __getpwnam_r50(name, &px, buf, len, &qx);
 116         *q = p;
 117         passwd_to_passwd50(&px, p);
 118         return rv;
 119 }
 120
 121 int
 122 getpwuid_r(uid_t uid, struct passwd50 *p, char *buf, size_t len,
 123     struct passwd50 **q)
 124 {
 125         struct passwd px, *qx;
 126         int rv = __getpwuid_r50(uid, &px, buf, len, &qx);
 127         *q = p;
 128         passwd_to_passwd50(&px, p);
 129         return rv;
 130 }
 131
 132 struct passwd50 *
 133 getpwent(void)
 134 {
 135         return cvt(__getpwent50());
 136 }
 137
 138 #ifdef notdef /* for libutil */
 139 int
 140 pw_scan(char *buf, struct passwd50 *p, int *flags)
 141 {
 142         struct passwd px;
 143         int rv = __pw_scan50(buf, &px, flags);
 144         passwd_to_passwd50(&px, p);
 145         return rv;
 146 }
 147 #endif
 148
 149 int
 150 getpwent_r(struct passwd50 *p, char *buf, size_t len, struct passwd50 **q)
 151 {
 152         struct passwd px, *qx;
 153         int rv = __getpwent_r50(&px, buf, len, &qx);
 154         *q = p;
 155         passwd_to_passwd50(&px, p);
 156         return rv;
 157 }
 158
 159 static struct passwd50 * (*__getpwnamf)(const char *);
 160 static struct passwd50 * (*__getpwuidf)(uid_t);
 161 static struct passwd pw;
 162
 163 static struct passwd *
 164 internal_getpwnam(const char *name)
 165 {
 166         struct passwd50 *p = (*__getpwnamf)(name);
 167         passwd50_to_passwd(p, &pw);
 168         return &pw;
 169 }
 170
 171 static struct passwd *
 172 internal_getpwuid(uid_t uid)
 173 {
 174         struct passwd50 *p = (*__getpwuidf)(uid);
 175         passwd50_to_passwd(p, &pw);
 176         return &pw;
 177 }
 178
 179 int pwcache_userdb(int (*setpassentf)(int), void (*endpwentf)(void),
 180     struct passwd50 * (*getpwnamf)(const char *),
 181     struct passwd50 * (*getpwuidf)(uid_t))
 182 {
 183         __getpwnamf = getpwnamf;
 184         __getpwuidf = getpwuidf;
 185         return __pwcache_userdb50(setpassentf, endpwentf, internal_getpwnam,
 186             internal_getpwuid);
 187 }