1 /* $NetBSD: suutil.c,v 1.1 2007/10/17 21:05:39 christos Exp $ */
2
3 /*
4 * Copyright (c) 1988 The Regents of the University of California.
5 * 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 * 3. Neither the name of the University nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 */
31 #include <sys/cdefs.h>
32 __RCSID("$NetBSD: suutil.c,v 1.1 2007/10/17 21:05:39 christos Exp $");
33
34 #include <sys/param.h>
35 #include <stdio.h>
36 #include <unistd.h>
37 #include <string.h>
38 #include "suutil.h"
39
40 int
chshell(const char * sh)41 chshell(const char *sh)
42 {
43 const char *cp;
44
45 setusershell();
46 while ((cp = getusershell()) != NULL)
47 if (strcmp(cp, sh) == 0)
48 return 1;
49 return 0;
50 }
51
52 char *
ontty(void)53 ontty(void)
54 {
55 char *p;
56 static char buf[MAXPATHLEN + 4];
57
58 buf[0] = 0;
59 if ((p = ttyname(STDERR_FILENO)) != NULL)
60 (void)snprintf(buf, sizeof buf, " on %s", p);
61 return buf;
62 }
63
64