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, Version 1.0 only
6 * (the "License"). You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
23 /* All Rights Reserved */
24
25 /*
26 * Copyright 2005 Sun Microsystems, Inc. All rights reserved.
27 * Use is subject to license terms.
28 */
29
30 /*
31 * accton - calls syscall with super-user privileges
32 */
33
34 #include <stdio.h>
35 #include <sys/types.h>
36 #include <sys/param.h>
37 #include "acctdef.h"
38 #include <errno.h>
39 #include <sys/stat.h>
40 #include <pwd.h>
41 #include <fcntl.h>
42 #include <stdlib.h>
43
44 uid_t admuid;
45 struct passwd *pwd;
46
47 void ckfile(char *);
48
49 int
main(int argc,char ** argv)50 main(int argc, char **argv)
51 {
52 uid_t uid;
53
54 uid = getuid();
55 if ((pwd = getpwnam("adm")) == NULL) {
56 perror("cannot determine adm's uid"), exit(1);
57 }
58 admuid = pwd->pw_uid;
59 if (uid == ROOT || uid == admuid) {
60 if (setuid(ROOT) == ERR) {
61 perror("cannot setuid (check command mode and owner)");
62 exit(1);
63 }
64 if (argv[1])
65 ckfile(argv[1]);
66 if (acct(argc > 1 ? argv[1] : 0) < 0) {
67 perror(argv[1]), exit(1);
68 }
69 exit(0);
70
71 }
72 fprintf(stderr, "%s: permission denied\n", argv[0]);
73 exit(1);
74 }
75
76 void
ckfile(char * admfile)77 ckfile(char *admfile)
78 {
79 struct stat stbuf;
80 struct stat *s = &stbuf;
81 int fd;
82
83 if ((fd = open(admfile, O_RDONLY|O_CREAT, 0644)) == ERR) {
84 perror("creat"), exit(1);
85 }
86
87 if (fstat(fd, s) == ERR) {
88 perror("fstat");
89 exit(1);
90 }
91
92 if (s->st_uid != admuid || s->st_gid != (gid_t)admuid)
93 if (fchown(fd, admuid, (gid_t)admuid) == ERR) {
94 perror("cannot change owner"), exit(1);
95 }
96
97 /* was if(s->st_mode & 0777 != 0664) */
98 if ((s->st_mode & S_IAMB) != S_IRUSR|S_IWUSR|S_IRGRP|S_IWUSR|S_IROTH)
99 if (fchmod(fd, S_IRUSR|S_IWUSR|S_IRGRP|S_IWUSR|S_IROTH) == ERR) {
100 perror("cannot chmod"), exit(1);
101 }
102
103 (void) close(fd);
104 }
105