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      1 /*	$NetBSD: quotautil.c,v 1.6 2012/01/30 06:14:43 dholland Exp $ */
      2 
      3 /*
      4  * Copyright (c) 1980, 1990, 1993
      5  *	The Regents of the University of California.  All rights reserved.
      6  *
      7  * This code is derived from software contributed to Berkeley by
      8  * Robert Elz at The University of Melbourne.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  * 3. Neither the name of the University nor the names of its contributors
     19  *    may be used to endorse or promote products derived from this software
     20  *    without specific prior written permission.
     21  *
     22  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     32  * SUCH DAMAGE.
     33  */
     34 
     35 #include <sys/cdefs.h>
     36 #ifndef lint
     37 __COPYRIGHT("@(#) Copyright (c) 1980, 1990, 1993\
     38  The Regents of the University of California.  All rights reserved.");
     39 #endif /* not lint */
     40 
     41 #ifndef lint
     42 #if 0
     43 static char sccsid[] = "@(#)quota.c	8.4 (Berkeley) 4/28/95";
     44 #else
     45 __RCSID("$NetBSD: quotautil.c,v 1.6 2012/01/30 06:14:43 dholland Exp $");
     46 #endif
     47 #endif /* not lint */
     48 
     49 #include <sys/param.h>
     50 #include <sys/types.h>
     51 
     52 #include <ctype.h>
     53 #include <stdio.h>
     54 #include <stdlib.h>
     55 #include <string.h>
     56 #include <time.h>
     57 #include <unistd.h>
     58 #include <fstab.h>
     59 #include <errno.h>
     60 #include <limits.h>
     61 #include <inttypes.h>
     62 
     63 #include <ufs/ufs/quota1.h>
     64 
     65 #include "quotautil.h"
     66 
     67 const char *qfextension[] = INITQFNAMES;
     68 const char *qfname = QUOTAFILENAME;
     69 
     70 /*
     71  * Check to see if a particular quota is to be enabled.
     72  */
     73 int
     74 hasquota(char *buf, size_t len, struct fstab *fs, int type)
     75 {
     76 	char *opt;
     77 	char *cp = NULL;
     78 	static char initname, usrname[100], grpname[100];
     79 	char optbuf[256];
     80 
     81 	if (!initname) {
     82 		(void)snprintf(usrname, sizeof(usrname), "%s%s",
     83 		    qfextension[USRQUOTA], qfname);
     84 		(void)snprintf(grpname, sizeof(grpname), "%s%s",
     85 		    qfextension[GRPQUOTA], qfname);
     86 		initname = 1;
     87 	}
     88 	strlcpy(optbuf, fs->fs_mntops, sizeof(optbuf));
     89 	for (opt = strtok(optbuf, ","); opt; opt = strtok(NULL, ",")) {
     90 		if ((cp = strchr(opt, '=')) != NULL)
     91 			*cp++ = '\0';
     92 		if (type == USRQUOTA && strcmp(opt, usrname) == 0)
     93 			break;
     94 		if (type == GRPQUOTA && strcmp(opt, grpname) == 0)
     95 			break;
     96 	}
     97 	if (!opt)
     98 		return 0;
     99 	if (cp) {
    100 		strlcpy(buf, cp, len);
    101 		return 1;
    102 	}
    103 	(void)snprintf(buf, len, "%s/%s.%s", fs->fs_file, qfname,
    104 	    qfextension[type]);
    105 	return 1;
    106 }
    107 
    108 /*
    109  * Check to see if target appears in list of size cnt.
    110  */
    111 int
    112 oneof(const char *target, char *list[], int cnt)
    113 {
    114 	int i;
    115 
    116 	for (i = 0; i < cnt; i++)
    117 		if (strcmp(target, list[i]) == 0)
    118 			return i;
    119 	return -1;
    120 }
    121