282 lines
6.9 KiB
C
282 lines
6.9 KiB
C
/* $NetBSD: quotaon.c,v 1.30 2012/04/07 05:07:33 christos 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 1.30 2012/04/07 05:07:33 christos 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 <quota.h>
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#include <ufs/ufs/quota1.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 <errno.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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#include <util.h>
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static int vflag; /* verbose */
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static void usage(void) __dead;
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static int quotaonoff(struct fstab *, struct quotahandle *, int, int, int,
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const char *);
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static int readonly(struct fstab *, const char *);
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static int oneof(const char *target, char *list[], int cnt);
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int
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main(int argc, char *argv[])
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{
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struct fstab *fs;
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struct quotahandle *qh;
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long argnum, done = 0;
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int i, offmode = 0, errs = 0;
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unsigned restrictions;
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int ch;
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int aflag = 0; /* all file systems */
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int gflag = 0; /* operate on group quotas */
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int uflag = 0; /* operate on user quotas */
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int noguflag = 0; /* operate on both (by default) */
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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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noguflag = 1;
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}
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/*
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* XXX at the moment quota_open also uses getfsent(), but it
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* uses it only up front. To avoid conflicting with it, let it
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* initialize first.
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*/
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qh = quota_open("/");
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if (qh != NULL) {
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quota_close(qh);
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}
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setfsent();
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while ((fs = getfsent()) != NULL) {
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char buf[MAXPATHLEN];
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const char *fsspec;
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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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fsspec = getfsspecname(buf, sizeof(buf), fs->fs_spec);
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if (fsspec == NULL) {
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warn("%s", buf);
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continue;
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}
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if (!aflag) {
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if ((argnum = oneof(fs->fs_file, argv, argc)) < 0 &&
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(argnum = oneof(fsspec, argv, argc)) < 0) {
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continue;
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}
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done |= 1U << argnum;
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}
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qh = quota_open(fs->fs_file);
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if (qh == NULL) {
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if (!aflag) {
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warn("quota_open");
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errs++;
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}
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continue;
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}
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restrictions = quota_getrestrictions(qh);
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if ((restrictions & QUOTA_RESTRICT_NEEDSQUOTACHECK) == 0) {
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/* Not a quota v1 volume, skip it */
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if (!aflag) {
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errno = EBUSY;
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warn("%s", fs->fs_file);
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errs++;
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}
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quota_close(qh);
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continue;
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}
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/*
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* The idea here is to warn if someone explicitly
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* tries to turn on group quotas and there are no
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* group quotas, and likewise for user quotas, but not
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* to warn if just doing the default thing and one of
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* the quota types isn't configured.
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*/
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if (noguflag) {
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errs += quotaonoff(fs, qh, offmode, GRPQUOTA, 0, fsspec);
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errs += quotaonoff(fs, qh, offmode, USRQUOTA, 0, fsspec);
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}
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if (gflag) {
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errs += quotaonoff(fs, qh, offmode, GRPQUOTA, 1, fsspec);
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}
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if (uflag) {
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errs += quotaonoff(fs, qh, offmode, USRQUOTA, 1, fsspec);
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}
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quota_close(qh);
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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 & (1U << i)) == 0)
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warnx("%s not found in fstab", argv[i]);
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return errs;
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}
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static void
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usage(void)
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{
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const char *p = getprogname();
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(void) fprintf(stderr, "Usage: %s [-g] [-u] [-v] -a\n"
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"\t%s [-g] [-u] [-v] filesys ...\n", p, p);
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exit(1);
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}
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static int
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quotaonoff(struct fstab *fs, struct quotahandle *qh, int offmode, int idtype,
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int warn_on_enxio, const char *fsspec)
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{
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const char *mode = (offmode == 1) ? "off" : "on";
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if (strcmp(fs->fs_file, "/") && readonly(fs, fsspec)) {
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return 1;
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}
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if (offmode) {
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if (quota_quotaoff(qh, idtype)) {
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if (warn_on_enxio || errno != ENXIO) {
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warn("quota%s for %s", mode, fs->fs_file);
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}
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return 1;
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}
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} else {
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if (quota_quotaon(qh, idtype)) {
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if (warn_on_enxio || errno != ENXIO) {
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warn("quota%s for %s", mode, fs->fs_file);
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}
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return 1;
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}
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}
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if (vflag) {
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printf("%s: %s quotas turned %s\n",
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fs->fs_file, quota_idtype_getname(qh, idtype), mode);
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}
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return 0;
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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(struct fstab *fs, const char *fsspec)
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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, fsspec)) {
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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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/*
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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(const char *target, char *list[], 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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