1/* $NetBSD: fattr.c,v 1.9 2008/08/05 20:57:45 pooka Exp $ */
2
3/*-
4 * Copyright (c) 2000 The NetBSD Foundation, Inc.
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 *
16 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
19 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26 * POSSIBILITY OF SUCH DAMAGE.
27 */
28
29#include <sys/cdefs.h>
30#ifndef lint
31__RCSID("$NetBSD: fattr.c,v 1.9 2008/08/05 20:57:45 pooka Exp $");
32#endif /* not lint */
33
34#include <sys/param.h>
35#include <sys/mount.h>
36#include <sys/stat.h>
37#include <err.h>
38#include <grp.h>
39#include <pwd.h>
40#include <stdio.h>
41#include <stdlib.h>
42#include <string.h>
43#include <unistd.h>
44
45#include "mountprog.h"
46
47int
48a_num(const char *s, const char *id_type)
49{
50	int id;
51	char *ep;
52
53	id = strtol(s, &ep, 0);
54	if (*ep || s == ep || id < 0)
55		errx(1, "unknown %s id: %s", id_type, s);
56	return id;
57}
58
59gid_t
60a_gid(const char *s)
61{
62	struct group *gr;
63
64	if ((gr = getgrnam(s)) != NULL)
65		return gr->gr_gid;
66	return a_num(s, "group");
67}
68
69uid_t
70a_uid(const char *s)
71{
72	struct passwd *pw;
73
74	if ((pw = getpwnam(s)) != NULL)
75		return pw->pw_uid;
76	return a_num(s, "user");
77}
78
79mode_t
80a_mask(const char *s)
81{
82	int rv;
83	char *ep;
84
85	rv = strtol(s, &ep, 8);
86	if (s == ep || *ep || rv < 0)
87		errx(1, "invalid file mode: %s", s);
88	return rv;
89}
90