xref: /netbsd/sbin/mount/fattr.c (revision bf9ec67e)
1 /* $NetBSD: fattr.c,v 1.2 2000/10/30 20:58:20 jdolecek 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  * 3. All advertising materials mentioning features or use of this software
16  *    must display the following acknowledgement:
17  *	This product includes software developed by the NetBSD
18  *	Foundation, Inc. and its contributors.
19  * 4. Neither the name of The NetBSD Foundation nor the names of its
20  *    contributors may be used to endorse or promote products derived
21  *    from this software without specific prior written permission.
22  *
23  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
24  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
25  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
26  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
27  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
28  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
29  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
30  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
31  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
32  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
33  * POSSIBILITY OF SUCH DAMAGE.
34  */
35 
36 #include <sys/cdefs.h>
37 #ifndef lint
38 __RCSID("$NetBSD: fattr.c,v 1.2 2000/10/30 20:58:20 jdolecek Exp $");
39 #endif /* not lint */
40 
41 #include <sys/cdefs.h>
42 #include <sys/param.h>
43 #include <sys/mount.h>
44 #include <sys/stat.h>
45 #include <ctype.h>
46 #include <err.h>
47 #include <grp.h>
48 #include <pwd.h>
49 #include <stdio.h>
50 #include <stdlib.h>
51 #include <string.h>
52 #include <unistd.h>
53 
54 #include "fattr.h"
55 
56 gid_t
57 a_gid(s)
58 	char *s;
59 {
60 	struct group *gr;
61 	char *gname;
62 	gid_t gid;
63 
64 	if ((gr = getgrnam(s)) != NULL)
65 		gid = gr->gr_gid;
66 	else {
67 		for (gname = s; *s && isdigit(*s); ++s);
68 		if (!*s)
69 			gid = atoi(gname);
70 		else
71 			errx(1, "unknown group id: %s", gname);
72 	}
73 	return (gid);
74 }
75 
76 uid_t
77 a_uid(s)
78 	char *s;
79 {
80 	struct passwd *pw;
81 	char *uname;
82 	uid_t uid;
83 
84 	if ((pw = getpwnam(s)) != NULL)
85 		uid = pw->pw_uid;
86 	else {
87 		for (uname = s; *s && isdigit(*s); ++s);
88 		if (!*s)
89 			uid = atoi(uname);
90 		else
91 			errx(1, "unknown user id: %s", uname);
92 	}
93 	return (uid);
94 }
95 
96 mode_t
97 a_mask(s)
98 	char *s;
99 {
100 	int done, rv;
101 	char *ep;
102 
103 	done = 0;
104 	rv = -1;
105 	if (*s >= '0' && *s <= '7') {
106 		done = 1;
107 		rv = strtol(optarg, &ep, 8);
108 	}
109 	if (!done || rv < 0 || *ep)
110 		errx(1, "invalid file mode: %s", s);
111 	return (rv);
112 }
113