freebsd-dev/sbin/quotacheck/preen.c

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/* $NetBSD: preen.c,v 1.18 1998/07/26 20:02:36 mycroft Exp $ */
/*-
* SPDX-License-Identifier: BSD-3-Clause
*
* Copyright (c) 1990, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
#include <sys/cdefs.h>
#ifndef lint
#if 0
static char sccsid[] = "@(#)preen.c 8.5 (Berkeley) 4/28/95";
#else
__RCSID("$NetBSD: preen.c,v 1.18 1998/07/26 20:02:36 mycroft Exp $");
#endif
#endif /* not lint */
#include <sys/param.h>
#include <sys/stat.h>
#include <sys/wait.h>
#include <sys/queue.h>
#include <ufs/ufs/quota.h>
#include <err.h>
#include <ctype.h>
#include <fcntl.h>
#include <fstab.h>
#include <libutil.h>
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include "quotacheck.h"
struct partentry {
TAILQ_ENTRY(partentry) p_entries;
char *p_devname; /* device name */
const char *p_mntpt; /* mount point */
struct quotafile *p_qfu; /* user quota file info ptr */
struct quotafile *p_qfg; /* group quota file info */
};
TAILQ_HEAD(part, partentry) badh;
struct diskentry {
TAILQ_ENTRY(diskentry) d_entries;
char *d_name; /* disk base name */
TAILQ_HEAD(prt, partentry) d_part; /* list of partitions on disk */
int d_pid; /* 0 or pid of fsck proc */
};
TAILQ_HEAD(disk, diskentry) diskh;
static struct diskentry *finddisk(const char *);
static void addpart(struct fstab *, struct quotafile *, struct quotafile *);
static int startdisk(struct diskentry *);
extern void *emalloc(size_t);
extern char *estrdup(const char *);
int
checkfstab(int uflag, int gflag)
{
struct fstab *fs;
struct diskentry *d, *nextdisk;
struct partentry *p;
int ret, pid, retcode, passno, sumstatus, status, nextpass;
struct quotafile *qfu, *qfg;
TAILQ_INIT(&badh);
TAILQ_INIT(&diskh);
sumstatus = 0;
nextpass = 0;
for (passno = 1; nextpass != INT_MAX; passno = nextpass) {
nextpass = INT_MAX;
if (setfsent() == 0) {
warnx("Can't open checklist file: %s\n", _PATH_FSTAB);
return (8);
}
while ((fs = getfsent()) != NULL) {
if (fs->fs_passno > passno && fs->fs_passno < nextpass)
nextpass = fs->fs_passno;
if (passno != fs->fs_passno)
continue;
qfu = NULL;
if (uflag)
qfu = quota_open(fs, USRQUOTA, O_CREAT|O_RDWR);
qfg = NULL;
if (gflag)
qfg = quota_open(fs, GRPQUOTA, O_CREAT|O_RDWR);
if (qfu == NULL && qfg == NULL)
continue;
if (passno == 1) {
sumstatus = chkquota(fs->fs_spec, qfu, qfg);
if (qfu)
quota_close(qfu);
if (qfg)
quota_close(qfg);
if (sumstatus)
return (sumstatus);
continue;
}
addpart(fs, qfu, qfg);
}
if (passno == 1)
continue;
TAILQ_FOREACH(nextdisk, &diskh, d_entries) {
if ((ret = startdisk(nextdisk)) != 0)
return ret;
}
while ((pid = wait(&status)) != -1) {
TAILQ_FOREACH(d, &diskh, d_entries)
if (d->d_pid == pid)
break;
if (d == NULL) {
warnx("Unknown pid %d\n", pid);
continue;
}
if (WIFEXITED(status))
retcode = WEXITSTATUS(status);
else
retcode = 0;
p = TAILQ_FIRST(&d->d_part);
if (WIFSIGNALED(status)) {
(void) fprintf(stderr,
"%s: (%s): EXITED WITH SIGNAL %d\n",
p->p_devname, p->p_mntpt,
WTERMSIG(status));
retcode = 8;
}
TAILQ_REMOVE(&d->d_part, p, p_entries);
if (retcode != 0) {
TAILQ_INSERT_TAIL(&badh, p, p_entries);
sumstatus |= retcode;
} else {
free(p->p_devname);
if (p->p_qfu)
quota_close(p->p_qfu);
if (p->p_qfg)
quota_close(p->p_qfg);
free(p);
}
d->d_pid = 0;
if (TAILQ_EMPTY(&d->d_part)) {
TAILQ_REMOVE(&diskh, d, d_entries);
} else {
if ((ret = startdisk(d)) != 0)
return ret;
}
}
}
if (sumstatus) {
p = TAILQ_FIRST(&badh);
if (p == NULL)
return (sumstatus);
(void) fprintf(stderr,
"THE FOLLOWING FILE SYSTEM%s HAD AN %s\n\t",
TAILQ_NEXT(p, p_entries) ? "S" : "",
"UNEXPECTED INCONSISTENCY:");
for (; p; p = TAILQ_NEXT(p, p_entries))
(void) fprintf(stderr,
"%s: (%s)%s", p->p_devname, p->p_mntpt,
TAILQ_NEXT(p, p_entries) ? ", " : "\n");
return sumstatus;
}
(void) endfsent();
return (0);
}
static struct diskentry *
finddisk(const char *name)
{
const char *p;
size_t len = 0;
struct diskentry *d;
p = strrchr(name, '/');
if (p == NULL)
p = name;
else
p++;
for (; *p && !isdigit(*p); p++)
continue;
for (; *p && isdigit(*p); p++)
continue;
len = p - name;
if (len == 0)
len = strlen(name);
TAILQ_FOREACH(d, &diskh, d_entries)
if (strncmp(d->d_name, name, len) == 0 && d->d_name[len] == 0)
return d;
d = emalloc(sizeof(*d));
d->d_name = estrdup(name);
d->d_name[len] = '\0';
TAILQ_INIT(&d->d_part);
d->d_pid = 0;
TAILQ_INSERT_TAIL(&diskh, d, d_entries);
return d;
}
static void
addpart(struct fstab *fs, struct quotafile *qfu, struct quotafile *qfg)
{
struct diskentry *d = finddisk(fs->fs_spec);
struct partentry *p;
TAILQ_FOREACH(p, &d->d_part, p_entries)
if (strcmp(p->p_devname, fs->fs_spec) == 0) {
warnx("%s in fstab more than once!\n", fs->fs_spec);
return;
}
p = emalloc(sizeof(*p));
p->p_devname = estrdup(blockcheck(fs->fs_spec));
if (qfu != NULL)
p->p_mntpt = quota_fsname(qfu);
else
p->p_mntpt = quota_fsname(qfg);
p->p_qfu = qfu;
p->p_qfg = qfg;
TAILQ_INSERT_TAIL(&d->d_part, p, p_entries);
}
static int
startdisk(struct diskentry *d)
{
struct partentry *p = TAILQ_FIRST(&d->d_part);
d->d_pid = fork();
if (d->d_pid < 0) {
perror("fork");
return (8);
}
if (d->d_pid == 0)
exit(chkquota(p->p_devname, p->p_qfu, p->p_qfg));
return (0);
}