xref: /illumos-gate/usr/src/lib/libc/port/gen/getpwnam.c (revision 7257d1b4)
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 /*	Copyright (c) 1988 AT&T	*/
28 /*	All Rights Reserved  	*/
29 
30 #pragma ident	"%Z%%M%	%I%	%E% SMI"
31 
32 #pragma weak _getpwnam = getpwnam
33 #pragma weak _getpwuid = getpwuid
34 
35 #include "lint.h"
36 #include <sys/types.h>
37 #include <pwd.h>
38 #include <nss_dbdefs.h>
39 #include <stdio.h>
40 #include "tsd.h"
41 
42 #ifdef	NSS_INCLUDE_UNSAFE
43 
44 /*
45  * Ye olde non-reentrant interface (MT-unsafe, caveat utor)
46  */
47 
48 static void
free_pwbuf(void * arg)49 free_pwbuf(void *arg)
50 {
51 	nss_XbyY_buf_t **buffer = arg;
52 
53 	NSS_XbyY_FREE(buffer);
54 }
55 
56 static nss_XbyY_buf_t *
get_pwbuf()57 get_pwbuf()
58 {
59 	nss_XbyY_buf_t **buffer =
60 	    tsdalloc(_T_PWBUF, sizeof (nss_XbyY_buf_t *), free_pwbuf);
61 	nss_XbyY_buf_t *b;
62 
63 	if (buffer == NULL)
64 		return (NULL);
65 	b = NSS_XbyY_ALLOC(buffer, sizeof (struct passwd), NSS_BUFLEN_PASSWD);
66 	return (b);
67 }
68 
69 struct passwd *
getpwuid(uid_t uid)70 getpwuid(uid_t uid)
71 {
72 	nss_XbyY_buf_t *b = get_pwbuf();
73 
74 	return (b == NULL ? NULL :
75 	    getpwuid_r(uid, b->result, b->buffer, b->buflen));
76 }
77 
78 struct passwd *
getpwnam(const char * nam)79 getpwnam(const char *nam)
80 {
81 	nss_XbyY_buf_t *b = get_pwbuf();
82 
83 	return (b == NULL ? NULL :
84 	    getpwnam_r(nam, b->result, b->buffer, b->buflen));
85 }
86 
87 struct passwd *
getpwent(void)88 getpwent(void)
89 {
90 	nss_XbyY_buf_t *b = get_pwbuf();
91 
92 	return (b == NULL ? NULL :
93 	    getpwent_r(b->result, b->buffer, b->buflen));
94 }
95 
96 struct passwd *
fgetpwent(FILE * f)97 fgetpwent(FILE *f)
98 {
99 	nss_XbyY_buf_t *b = get_pwbuf();
100 
101 	return (b == NULL ? NULL :
102 	    fgetpwent_r(f, b->result, b->buffer, b->buflen));
103 }
104 
105 #endif	/* NSS_INCLUDE_UNSAFE */
106