1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (C) 1996
5 * David L. Nugent. All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY DAVID L. NUGENT AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL DAVID L. NUGENT OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29 #include <err.h>
30 #include <grp.h>
31 #include <libutil.h>
32 #include <stdio.h>
33 #include <stdlib.h>
34 #include <unistd.h>
35
36 #include "pwupd.h"
37
38 char *
getgrpath(const char * file)39 getgrpath(const char * file)
40 {
41 static char pathbuf[MAXPATHLEN];
42
43 snprintf(pathbuf, sizeof pathbuf, "%s/%s", conf.etcpath, file);
44
45 return (pathbuf);
46 }
47
48 static int
gr_update(struct group * grp,char const * group)49 gr_update(struct group * grp, char const * group)
50 {
51 int pfd, tfd;
52 struct group *gr = NULL;
53 struct group *old_gr = NULL;
54
55 if (grp != NULL)
56 gr = gr_dup(grp);
57
58 if (group != NULL)
59 old_gr = GETGRNAM(group);
60
61 if (gr_init(conf.etcpath, NULL))
62 err(1, "gr_init()");
63
64 if ((pfd = gr_lock()) == -1) {
65 gr_fini();
66 err(1, "gr_lock()");
67 }
68 if ((tfd = gr_tmp(-1)) == -1) {
69 gr_fini();
70 err(1, "gr_tmp()");
71 }
72 if (gr_copy(pfd, tfd, gr, old_gr) == -1) {
73 gr_fini();
74 close(tfd);
75 err(1, "gr_copy()");
76 }
77 fsync(tfd);
78 close(tfd);
79 if (gr_mkdb() == -1) {
80 gr_fini();
81 err(1, "gr_mkdb()");
82 }
83 free(gr);
84 gr_fini();
85 return 0;
86 }
87
88
89 int
addgrent(struct group * grp)90 addgrent(struct group * grp)
91 {
92 return gr_update(grp, NULL);
93 }
94
95 int
chggrent(char const * login,struct group * grp)96 chggrent(char const * login, struct group * grp)
97 {
98 return gr_update(grp, login);
99 }
100
101 int
delgrent(struct group * grp)102 delgrent(struct group * grp)
103 {
104
105 return (gr_update(NULL, grp->gr_name));
106 }
107