275 lines
6.8 KiB
C
275 lines
6.8 KiB
C
/* $NetBSD: quotaon.c,v 1.23 2009/04/18 08:20:41 lukem Exp $ */
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/*
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* Copyright (c) 1980, 1990, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Robert Elz at The University of Melbourne.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#ifndef lint
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__COPYRIGHT("@(#) Copyright (c) 1980, 1990, 1993\
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The Regents of the University of California. All rights reserved.");
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#endif /* not lint */
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)quotaon.c 8.1 (Berkeley) 6/6/93";
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#else
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__RCSID("$NetBSD: quotaon.c,v 1.23 2009/04/18 08:20:41 lukem Exp $");
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#endif
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#endif /* not lint */
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/*
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* Turn quota on/off for a filesystem.
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*/
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#include <sys/param.h>
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#include <sys/file.h>
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#include <sys/mount.h>
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#include <ufs/ufs/quota.h>
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#include <err.h>
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#include <fstab.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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const char *qfname = QUOTAFILENAME;
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const char *qfextension[] = INITQFNAMES;
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int aflag; /* all file systems */
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int gflag; /* operate on group quotas */
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int uflag; /* operate on user quotas */
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int vflag; /* verbose */
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int main __P((int, char *[]));
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static void usage __P((void));
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static int quotaonoff __P((struct fstab *, int, int, char *));
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static int oneof __P((const char *, char *[], int));
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static int hasquota __P((struct fstab *, int, char **));
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static int readonly __P((struct fstab *));
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int
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main(argc, argv)
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int argc;
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char *argv[];
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{
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struct fstab *fs;
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char *qfnp;
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long argnum, done = 0;
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int i, offmode = 0, errs = 0;
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int ch;
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if (strcmp(getprogname(), "quotaoff") == 0)
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offmode++;
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else if (strcmp(getprogname(), "quotaon") != 0)
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errx(1, "Name must be quotaon or quotaoff");
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while ((ch = getopt(argc, argv, "avug")) != -1) {
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switch(ch) {
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case 'a':
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aflag++;
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break;
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case 'g':
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gflag++;
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break;
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case 'u':
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uflag++;
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break;
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case 'v':
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vflag++;
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break;
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default:
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usage();
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break;
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}
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}
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argc -= optind;
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argv += optind;
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if (argc <= 0 && !aflag)
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usage();
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if (!gflag && !uflag) {
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gflag++;
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uflag++;
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}
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setfsent();
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while ((fs = getfsent()) != NULL) {
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if ((strcmp(fs->fs_vfstype, "ffs") &&
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strcmp(fs->fs_vfstype, "lfs")) ||
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strcmp(fs->fs_type, FSTAB_RW))
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continue;
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if (aflag) {
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if (gflag && hasquota(fs, GRPQUOTA, &qfnp))
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errs += quotaonoff(fs, offmode, GRPQUOTA, qfnp);
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if (uflag && hasquota(fs, USRQUOTA, &qfnp))
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errs += quotaonoff(fs, offmode, USRQUOTA, qfnp);
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continue;
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}
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if ((argnum = oneof(fs->fs_file, argv, argc)) >= 0 ||
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(argnum = oneof(fs->fs_spec, argv, argc)) >= 0) {
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done |= 1 << argnum;
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if (gflag && hasquota(fs, GRPQUOTA, &qfnp))
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errs += quotaonoff(fs, offmode, GRPQUOTA, qfnp);
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if (uflag && hasquota(fs, USRQUOTA, &qfnp))
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errs += quotaonoff(fs, offmode, USRQUOTA, qfnp);
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}
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}
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endfsent();
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for (i = 0; i < argc; i++)
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if ((done & (1 << i)) == 0)
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warnx("%s not found in fstab", argv[i]);
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exit(errs);
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}
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static void
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usage()
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{
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(void) fprintf(stderr, "usage:\n\t%s [-g] [-u] [-v] -a\n",
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getprogname());
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(void) fprintf(stderr, "\t%s [-g] [-u] [-v] filesys ...\n",
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getprogname());
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exit(1);
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}
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static int
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quotaonoff(fs, offmode, type, qfpathname)
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struct fstab *fs;
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int offmode, type;
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char *qfpathname;
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{
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if (strcmp(fs->fs_file, "/") && readonly(fs))
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return (1);
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if (offmode) {
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if (quotactl(fs->fs_file, QCMD(Q_QUOTAOFF, type), 0, 0) < 0) {
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warn("%s", fs->fs_file);
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return (1);
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}
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if (vflag)
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printf("%s: %s quotas turned off\n",
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fs->fs_file, qfextension[type]);
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return (0);
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}
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if (quotactl(fs->fs_file, QCMD(Q_QUOTAON, type), 0, qfpathname) < 0) {
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warn("%s quotas using %s on %s",
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qfextension[type], qfpathname, fs->fs_file);
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return (1);
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}
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if (vflag)
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printf("%s: %s quotas turned on\n", fs->fs_file,
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qfextension[type]);
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return (0);
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}
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/*
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* Check to see if target appears in list of size cnt.
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*/
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static int
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oneof(target, list, cnt)
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const char *target;
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char *list[];
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int cnt;
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{
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int i;
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for (i = 0; i < cnt; i++)
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if (strcmp(target, list[i]) == 0)
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return (i);
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return (-1);
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}
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/*
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* Check to see if a particular quota is to be enabled.
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*/
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static int
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hasquota(fs, type, qfnamep)
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struct fstab *fs;
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int type;
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char **qfnamep;
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{
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char *opt;
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char *cp = NULL;
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static char initname, usrname[100], grpname[100];
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static char buf[BUFSIZ];
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if (!initname) {
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(void) snprintf(usrname, sizeof(usrname), "%s%s",
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qfextension[USRQUOTA], qfname);
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(void) snprintf(grpname, sizeof(grpname), "%s%s",
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qfextension[GRPQUOTA], qfname);
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initname = 1;
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}
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strcpy(buf, fs->fs_mntops);
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for (opt = strtok(buf, ","); opt; opt = strtok(NULL, ",")) {
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if ((cp = strchr(opt, '=')) != NULL)
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*cp++ = '\0';
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if (type == USRQUOTA && strcmp(opt, usrname) == 0)
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break;
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if (type == GRPQUOTA && strcmp(opt, grpname) == 0)
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break;
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}
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if (!opt)
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return (0);
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if (cp) {
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*qfnamep = cp;
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return (1);
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}
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(void) snprintf(buf, sizeof(buf), "%s/%s.%s", fs->fs_file, qfname,
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qfextension[type]);
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*qfnamep = buf;
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return (1);
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}
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/*
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* Verify file system is mounted and not readonly.
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*/
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static int
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readonly(fs)
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struct fstab *fs;
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{
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struct statvfs fsbuf;
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if (statvfs(fs->fs_file, &fsbuf) < 0 ||
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strcmp(fsbuf.f_mntonname, fs->fs_file) ||
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strcmp(fsbuf.f_mntfromname, fs->fs_spec)) {
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printf("%s: not mounted\n", fs->fs_file);
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return (1);
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}
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if (fsbuf.f_flag & MNT_RDONLY) {
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printf("%s: mounted read-only\n", fs->fs_file);
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return (1);
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}
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return (0);
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}
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