sbin/quotacheck/preen.c

   1 /*      $NetBSD: preen.c,v 1.18 1998/07/26 20:02:36 mycroft Exp $       */
   2
   3 /*-
   4  * SPDX-License-Identifier: BSD-3-Clause
   5  *
   6  * Copyright (c) 1990, 1993
   7  *      The Regents of the University of California.  All rights reserved.
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted provided that the following conditions
  11  * are met:
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  * 2. Redistributions in binary form must reproduce the above copyright
  15  *    notice, this list of conditions and the following disclaimer in the
  16  *    documentation and/or other materials provided with the distribution.
  17  * 3. Neither the name of the University nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  *
  33  * $FreeBSD$
  34  */
  35
  36 #include <sys/cdefs.h>
  37 #ifndef lint
  38 #if 0
  39 static char sccsid[] = "@(#)preen.c     8.5 (Berkeley) 4/28/95";
  40 #else
  41 __RCSID("$NetBSD: preen.c,v 1.18 1998/07/26 20:02:36 mycroft Exp $");
  42 #endif
  43 #endif /* not lint */
  44
  45 #include <sys/param.h>
  46 #include <sys/stat.h>
  47 #include <sys/wait.h>
  48 #include <sys/queue.h>
  49
  50 #include <ufs/ufs/quota.h>
  51
  52 #include <err.h>
  53 #include <ctype.h>
  54 #include <fcntl.h>
  55 #include <fstab.h>
  56 #include <libutil.h>
  57 #include <string.h>
  58 #include <stdio.h>
  59 #include <stdlib.h>
  60 #include <unistd.h>
  61
  62 #include "quotacheck.h"
  63
  64 struct partentry {
  65         TAILQ_ENTRY(partentry)   p_entries;
  66         char                    *p_devname;     /* device name */
  67         const char              *p_mntpt;       /* mount point */
  68         struct quotafile        *p_qfu;         /* user quota file info ptr */
  69         struct quotafile        *p_qfg;         /* group quota file info */
  70 };
  71
  72 TAILQ_HEAD(part, partentry) badh;
  73
  74 struct diskentry {
  75         TAILQ_ENTRY(diskentry)      d_entries;
  76         char                       *d_name;     /* disk base name */
  77         TAILQ_HEAD(prt, partentry)  d_part;     /* list of partitions on disk */
  78         int                         d_pid;      /* 0 or pid of fsck proc */
  79 };
  80
  81 TAILQ_HEAD(disk, diskentry) diskh;
  82
  83 static struct diskentry *finddisk(const char *);
  84 static void addpart(struct fstab *, struct quotafile *, struct quotafile *);
  85 static int startdisk(struct diskentry *);
  86 extern void *emalloc(size_t);
  87 extern char *estrdup(const char *);
  88
  89 int
  90 checkfstab(int uflag, int gflag)
  91 {
  92         struct fstab *fs;
  93         struct diskentry *d, *nextdisk;
  94         struct partentry *p;
  95         int ret, pid, retcode, passno, sumstatus, status, nextpass;
  96         struct quotafile *qfu, *qfg;
  97
  98         TAILQ_INIT(&badh);
  99         TAILQ_INIT(&diskh);
 100
 101         sumstatus = 0;
 102
 103         nextpass = 0;
 104         for (passno = 1; nextpass != INT_MAX; passno = nextpass) {
 105                 nextpass = INT_MAX;
 106                 if (setfsent() == 0) {
 107                         warnx("Can't open checklist file: %s\n", _PATH_FSTAB);
 108                         return (8);
 109                 }
 110                 while ((fs = getfsent()) != NULL) {
 111                         if (fs->fs_passno > passno && fs->fs_passno < nextpass)
 112                                 nextpass = fs->fs_passno;
 113
 114                         if (passno != fs->fs_passno)
 115                                 continue;
 116
 117                         qfu = NULL;
 118                         if (uflag)
 119                                 qfu = quota_open(fs, USRQUOTA, O_CREAT|O_RDWR);
 120                         qfg = NULL;
 121                         if (gflag)
 122                                 qfg = quota_open(fs, GRPQUOTA, O_CREAT|O_RDWR);
 123                         if (qfu == NULL && qfg == NULL)
 124                                 continue;
 125
 126                         if (passno == 1) {
 127                                 sumstatus = chkquota(fs->fs_spec, qfu, qfg);
 128                                 if (qfu)
 129                                         quota_close(qfu);
 130                                 if (qfg)
 131                                         quota_close(qfg);
 132                                 if (sumstatus)
 133                                         return (sumstatus);
 134                                 continue;
 135                         }
 136                         addpart(fs, qfu, qfg);
 137                 }
 138
 139                 if (passno == 1)
 140                         continue;
 141
 142                 TAILQ_FOREACH(nextdisk, &diskh, d_entries) {
 143                         if ((ret = startdisk(nextdisk)) != 0)
 144                                 return ret;
 145                 }
 146
 147                 while ((pid = wait(&status)) != -1) {
 148                         TAILQ_FOREACH(d, &diskh, d_entries)
 149                                 if (d->d_pid == pid)
 150                                         break;
 151
 152                         if (d == NULL) {
 153                                 warnx("Unknown pid %d\n", pid);
 154                                 continue;
 155                         }
 156
 157                         if (WIFEXITED(status))
 158                                 retcode = WEXITSTATUS(status);
 159                         else
 160                                 retcode = 0;
 161
 162                         p = TAILQ_FIRST(&d->d_part);
 163
 164                         if (WIFSIGNALED(status)) {
 165                                 (void) fprintf(stderr,
 166                                     "%s: (%s): EXITED WITH SIGNAL %d\n",
 167                                     p->p_devname, p->p_mntpt,
 168                                     WTERMSIG(status));
 169                                 retcode = 8;
 170                         }
 171
 172                         TAILQ_REMOVE(&d->d_part, p, p_entries);
 173
 174                         if (retcode != 0) {
 175                                 TAILQ_INSERT_TAIL(&badh, p, p_entries);
 176                                 sumstatus |= retcode;
 177                         } else {
 178                                 free(p->p_devname);
 179                                 if (p->p_qfu)
 180                                         quota_close(p->p_qfu);
 181                                 if (p->p_qfg)
 182                                         quota_close(p->p_qfg);
 183                                 free(p);
 184                         }
 185                         d->d_pid = 0;
 186
 187                         if (TAILQ_EMPTY(&d->d_part)) {
 188                                 TAILQ_REMOVE(&diskh, d, d_entries);
 189                         } else {
 190                                 if ((ret = startdisk(d)) != 0)
 191                                         return ret;
 192                         }
 193                 }
 194         }
 195
 196         if (sumstatus) {
 197                 p = TAILQ_FIRST(&badh);
 198                 if (p == NULL)
 199                         return (sumstatus);
 200
 201                 (void) fprintf(stderr,
 202                         "THE FOLLOWING FILE SYSTEM%s HAD AN %s\n\t",
 203                         TAILQ_NEXT(p, p_entries) ? "S" : "",
 204                         "UNEXPECTED INCONSISTENCY:");
 205
 206                 for (; p; p = TAILQ_NEXT(p, p_entries))
 207                         (void) fprintf(stderr,
 208                             "%s: (%s)%s", p->p_devname, p->p_mntpt,
 209                             TAILQ_NEXT(p, p_entries) ? ", " : "\n");
 210
 211                 return sumstatus;
 212         }
 213         (void) endfsent();
 214         return (0);
 215 }
 216
 217
 218 static struct diskentry *
 219 finddisk(const char *name)
 220 {
 221         const char *p;
 222         size_t len = 0;
 223         struct diskentry *d;
 224
 225         p = strrchr(name, '/');
 226         if (p == NULL)
 227                 p = name;
 228         else
 229                 p++;
 230         for (; *p && !isdigit(*p); p++)
 231                 continue;
 232         for (; *p && isdigit(*p); p++)
 233                 continue;
 234         len = p - name;
 235         if (len == 0)
 236                 len = strlen(name);
 237
 238         TAILQ_FOREACH(d, &diskh, d_entries)
 239                 if (strncmp(d->d_name, name, len) == 0 && d->d_name[len] == 0)
 240                         return d;
 241
 242         d = emalloc(sizeof(*d));
 243         d->d_name = estrdup(name);
 244         d->d_name[len] = '\0';
 245         TAILQ_INIT(&d->d_part);
 246         d->d_pid = 0;
 247
 248         TAILQ_INSERT_TAIL(&diskh, d, d_entries);
 249
 250         return d;
 251 }
 252
 253 static void
 254 addpart(struct fstab *fs, struct quotafile *qfu, struct quotafile *qfg)
 255 {
 256         struct diskentry *d = finddisk(fs->fs_spec);
 257         struct partentry *p;
 258
 259         TAILQ_FOREACH(p, &d->d_part, p_entries)
 260                 if (strcmp(p->p_devname, fs->fs_spec) == 0) {
 261                         warnx("%s in fstab more than once!\n", fs->fs_spec);
 262                         return;
 263                 }
 264
 265         p = emalloc(sizeof(*p));
 266         p->p_devname = estrdup(blockcheck(fs->fs_spec));
 267         if (qfu != NULL)
 268                 p->p_mntpt = quota_fsname(qfu);
 269         else
 270                 p->p_mntpt = quota_fsname(qfg);
 271         p->p_qfu = qfu;
 272         p->p_qfg = qfg;
 273
 274         TAILQ_INSERT_TAIL(&d->d_part, p, p_entries);
 275 }
 276
 277
 278 static int
 279 startdisk(struct diskentry *d)
 280 {
 281         struct partentry *p = TAILQ_FIRST(&d->d_part);
 282
 283         d->d_pid = fork();
 284         if (d->d_pid < 0) {
 285                 perror("fork");
 286                 return (8);
 287         }
 288         if (d->d_pid == 0)
 289                 exit(chkquota(p->p_devname, p->p_qfu, p->p_qfg));
 290         return (0);
 291 }