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fattr.c revision 1.2 
      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