Home | History | Annotate | Line # | Download | only in mount 
      1 /* $NetBSD: fattr.c,v 1.10 2009/06/19 12:55:45 stacktic 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 1.10 2009/06/19 12:55:45 stacktic 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 
     47 int
     48 a_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 
     59 gid_t
     60 a_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 
     69 uid_t
     70 a_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 
     79 mode_t
     80 a_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