usr.sbin/edquota/edquota.c

   1 /*
   2  * Copyright (c) 1980, 1990, 1993
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * This code is derived from software contributed to Berkeley by
   6  * Robert Elz at The University of Melbourne.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  * 3. All advertising materials mentioning features or use of this software
  17  *    must display the following acknowledgement:
  18  *      This product includes software developed by the University of
  19  *      California, Berkeley and its contributors.
  20  * 4. Neither the name of the University nor the names of its contributors
  21  *    may be used to endorse or promote products derived from this software
  22  *    without specific prior written permission.
  23  *
  24  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  25  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  26  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  27  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  28  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  29  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  30  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  31  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  32  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  33  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  34  * SUCH DAMAGE.
  35  */
  36
  37 #ifndef lint
  38 static const char copyright[] =
  39 "@(#) Copyright (c) 1980, 1990, 1993\n\
  40         The Regents of the University of California.  All rights reserved.\n";
  41 #endif /* not lint */
  42
  43 #ifndef lint
  44 #if 0
  45 static char sccsid[] = "@(#)edquota.c   8.1 (Berkeley) 6/6/93";
  46 #endif
  47 static const char rcsid[] =
  48   "$FreeBSD$";
  49 #endif /* not lint */
  50
  51 /*
  52  * Disk quota editor.
  53  */
  54 #include <sys/param.h>
  55 #include <sys/stat.h>
  56 #include <sys/file.h>
  57 #include <sys/wait.h>
  58 #include <ufs/ufs/quota.h>
  59 #include <ctype.h>
  60 #include <err.h>
  61 #include <errno.h>
  62 #include <fstab.h>
  63 #include <grp.h>
  64 #include <pwd.h>
  65 #include <signal.h>
  66 #include <stdio.h>
  67 #include <stdlib.h>
  68 #include <string.h>
  69 #include <unistd.h>
  70 #include "pathnames.h"
  71
  72 const char *qfname = QUOTAFILENAME;
  73 const char *qfextension[] = INITQFNAMES;
  74 const char *quotagroup = QUOTAGROUP;
  75 char tmpfil[] = _PATH_TMP;
  76
  77 struct quotause {
  78         struct  quotause *next;
  79         long    flags;
  80         struct  dqblk dqblk;
  81         char    fsname[MAXPATHLEN + 1];
  82         char    qfname[1];      /* actually longer */
  83 };
  84 #define FOUND   0x01
  85
  86 int alldigits __P((const char *s));
  87 int cvtatos __P((time_t, char *, time_t *));
  88 char *cvtstoa __P((time_t));
  89 int editit __P((char *));
  90 void freeprivs __P((struct quotause *));
  91 int getentry __P((const char *, int));
  92 struct quotause *getprivs __P((long, int, char *));
  93 int hasquota __P((struct fstab *, int, char **));
  94 void putprivs __P((long, int, struct quotause *));
  95 int readprivs __P((struct quotause *, char *));
  96 int readtimes __P((struct quotause *, char *));
  97 static void usage __P((void));
  98 int writetimes __P((struct quotause *, int, int));
  99 int writeprivs __P((struct quotause *, int, char *, int));
 100
 101 int
 102 main(argc, argv)
 103         register char **argv;
 104         int argc;
 105 {
 106         register struct quotause *qup, *protoprivs, *curprivs;
 107         register long id, protoid;
 108         register int quotatype, tmpfd;
 109         register uid_t startuid, enduid;
 110         char *protoname, *cp, ch;
 111         int tflag = 0, pflag = 0;
 112         char *fspath = NULL;
 113         char buf[30];
 114
 115         if (argc < 2)
 116                 usage();
 117         if (getuid())
 118                 errx(1, "permission denied");
 119         quotatype = USRQUOTA;
 120         while ((ch = getopt(argc, argv, "ugtf:p:")) != -1) {
 121                 switch(ch) {
 122                 case 'f':
 123                         fspath = optarg;
 124                         break;
 125                 case 'p':
 126                         protoname = optarg;
 127                         pflag++;
 128                         break;
 129                 case 'g':
 130                         quotatype = GRPQUOTA;
 131                         break;
 132                 case 'u':
 133                         quotatype = USRQUOTA;
 134                         break;
 135                 case 't':
 136                         tflag++;
 137                         break;
 138                 default:
 139                         usage();
 140                 }
 141         }
 142         argc -= optind;
 143         argv += optind;
 144         if (pflag) {
 145                 if ((protoid = getentry(protoname, quotatype)) == -1)
 146                         exit(1);
 147                 protoprivs = getprivs(protoid, quotatype, fspath);
 148                 for (qup = protoprivs; qup; qup = qup->next) {
 149                         qup->dqblk.dqb_btime = 0;
 150                         qup->dqblk.dqb_itime = 0;
 151                 }
 152                 while (argc-- > 0) {
 153                         if (isdigit(*argv[0]) &&
 154                             (cp = strchr(*argv, '-')) != NULL) {
 155                                 *cp++ = '\0';
 156                                 startuid = atoi(*argv);
 157                                 enduid = atoi(cp);
 158                                 if (enduid < startuid)
 159                                         errx(1,
 160         "ending uid (%d) must be >= starting uid (%d) when using uid ranges",
 161                                                 enduid, startuid);
 162                                 for ( ; startuid <= enduid; startuid++) {
 163                                         snprintf(buf, sizeof(buf), "%d",
 164                                             startuid);
 165                                         if ((id = getentry(buf, quotatype)) < 0)
 166                                                 continue;
 167                                         putprivs(id, quotatype, protoprivs);
 168                                 }
 169                                 continue;
 170                         }
 171                         if ((id = getentry(*argv++, quotatype)) < 0)
 172                                 continue;
 173                         putprivs(id, quotatype, protoprivs);
 174                 }
 175                 exit(0);
 176         }
 177         tmpfd = mkstemp(tmpfil);
 178         fchown(tmpfd, getuid(), getgid());
 179         if (tflag) {
 180                 protoprivs = getprivs(0, quotatype, fspath);
 181                 if (writetimes(protoprivs, tmpfd, quotatype) == 0)
 182                         exit(1);
 183                 if (editit(tmpfil) && readtimes(protoprivs, tmpfil))
 184                         putprivs(0, quotatype, protoprivs);
 185                 freeprivs(protoprivs);
 186                 close(tmpfd);
 187                 unlink(tmpfil);
 188                 exit(0);
 189         }
 190         for ( ; argc > 0; argc--, argv++) {
 191                 if ((id = getentry(*argv, quotatype)) == -1)
 192                         continue;
 193                 curprivs = getprivs(id, quotatype, fspath);
 194                 if (writeprivs(curprivs, tmpfd, *argv, quotatype) == 0)
 195                         continue;
 196                 if (editit(tmpfil) && readprivs(curprivs, tmpfil))
 197                         putprivs(id, quotatype, curprivs);
 198                 freeprivs(curprivs);
 199         }
 200         close(tmpfd);
 201         unlink(tmpfil);
 202         exit(0);
 203 }
 204
 205 static void
 206 usage()
 207 {
 208         fprintf(stderr, "%s\n%s\n%s\n%s\n",
 209                 "usage: edquota [-u] [-f fspath] [-p username] username ...",
 210                 "       edquota -g [-f fspath] [-p groupname] groupname ...",
 211                 "       edquota [-u] -t [-f fspath]",
 212                 "       edquota -g -t [-f fspath]");
 213         exit(1);
 214 }
 215
 216 /*
 217  * This routine converts a name for a particular quota type to
 218  * an identifier. This routine must agree with the kernel routine
 219  * getinoquota as to the interpretation of quota types.
 220  */
 221 int
 222 getentry(name, quotatype)
 223         const char *name;
 224         int quotatype;
 225 {
 226         struct passwd *pw;
 227         struct group *gr;
 228
 229         if (alldigits(name))
 230                 return (atoi(name));
 231         switch(quotatype) {
 232         case USRQUOTA:
 233                 if ((pw = getpwnam(name)))
 234                         return (pw->pw_uid);
 235                 warnx("%s: no such user", name);
 236                 break;
 237         case GRPQUOTA:
 238                 if ((gr = getgrnam(name)))
 239                         return (gr->gr_gid);
 240                 warnx("%s: no such group", name);
 241                 break;
 242         default:
 243                 warnx("%d: unknown quota type", quotatype);
 244                 break;
 245         }
 246         sleep(1);
 247         return (-1);
 248 }
 249
 250 /*
 251  * Collect the requested quota information.
 252  */
 253 struct quotause *
 254 getprivs(id, quotatype, fspath)
 255         register long id;
 256         int quotatype;
 257         char *fspath;
 258 {
 259         register struct fstab *fs;
 260         register struct quotause *qup, *quptail;
 261         struct quotause *quphead;
 262         int qcmd, qupsize, fd;
 263         char *qfpathname;
 264         static int warned = 0;
 265
 266         setfsent();
 267         quphead = (struct quotause *)0;
 268         qcmd = QCMD(Q_GETQUOTA, quotatype);
 269         while ((fs = getfsent())) {
 270                 if (fspath && *fspath && strcmp(fspath, fs->fs_spec) &&
 271                     strcmp(fspath, fs->fs_file))
 272                         continue;
 273                 if (strcmp(fs->fs_vfstype, "ufs"))
 274                         continue;
 275                 if (!hasquota(fs, quotatype, &qfpathname))
 276                         continue;
 277                 qupsize = sizeof(*qup) + strlen(qfpathname);
 278                 if ((qup = (struct quotause *)malloc(qupsize)) == NULL)
 279                         errx(2, "out of memory");
 280                 if (quotactl(fs->fs_file, qcmd, id, &qup->dqblk) != 0) {
 281                         if (errno == EOPNOTSUPP && !warned) {
 282                                 warned++;
 283                 warnx("warning: quotas are not compiled into this kernel");
 284                                 sleep(3);
 285                         }
 286                         if ((fd = open(qfpathname, O_RDONLY)) < 0) {
 287                                 fd = open(qfpathname, O_RDWR|O_CREAT, 0640);
 288                                 if (fd < 0 && errno != ENOENT) {
 289                                         warn("%s", qfpathname);
 290                                         free(qup);
 291                                         continue;
 292                                 }
 293                                 warnx("creating quota file %s", qfpathname);
 294                                 sleep(3);
 295                                 (void) fchown(fd, getuid(),
 296                                     getentry(quotagroup, GRPQUOTA));
 297                                 (void) fchmod(fd, 0640);
 298                         }
 299                         lseek(fd, (long)(id * sizeof(struct dqblk)), L_SET);
 300                         switch (read(fd, &qup->dqblk, sizeof(struct dqblk))) {
 301                         case 0:                 /* EOF */
 302                                 /*
 303                                  * Convert implicit 0 quota (EOF)
 304                                  * into an explicit one (zero'ed dqblk)
 305                                  */
 306                                 bzero((caddr_t)&qup->dqblk,
 307                                     sizeof(struct dqblk));
 308                                 break;
 309
 310                         case sizeof(struct dqblk):      /* OK */
 311                                 break;
 312
 313                         default:                /* ERROR */
 314                                 warn("read error in %s", qfpathname);
 315                                 close(fd);
 316                                 free(qup);
 317                                 continue;
 318                         }
 319                         close(fd);
 320                 }
 321                 strcpy(qup->qfname, qfpathname);
 322                 strcpy(qup->fsname, fs->fs_file);
 323                 if (quphead == NULL)
 324                         quphead = qup;
 325                 else
 326                         quptail->next = qup;
 327                 quptail = qup;
 328                 qup->next = 0;
 329         }
 330         endfsent();
 331         return (quphead);
 332 }
 333
 334 /*
 335  * Store the requested quota information.
 336  */
 337 void
 338 putprivs(id, quotatype, quplist)
 339         long id;
 340         int quotatype;
 341         struct quotause *quplist;
 342 {
 343         register struct quotause *qup;
 344         int qcmd, fd;
 345
 346         qcmd = QCMD(Q_SETQUOTA, quotatype);
 347         for (qup = quplist; qup; qup = qup->next) {
 348                 if (quotactl(qup->fsname, qcmd, id, &qup->dqblk) == 0)
 349                         continue;
 350                 if ((fd = open(qup->qfname, O_WRONLY)) < 0) {
 351                         warn("%s", qup->qfname);
 352                 } else {
 353                         lseek(fd, (long)id * (long)sizeof (struct dqblk), 0);
 354                         if (write(fd, &qup->dqblk, sizeof (struct dqblk)) !=
 355                             sizeof (struct dqblk)) {
 356                                 warn("%s", qup->qfname);
 357                         }
 358                         close(fd);
 359                 }
 360         }
 361 }
 362
 363 /*
 364  * Take a list of priviledges and get it edited.
 365  */
 366 int
 367 editit(tmpf)
 368         char *tmpf;
 369 {
 370         long omask;
 371         int pid, status;
 372
 373         omask = sigblock(sigmask(SIGINT)|sigmask(SIGQUIT)|sigmask(SIGHUP));
 374  top:
 375         if ((pid = fork()) < 0) {
 376
 377                 if (errno == EPROCLIM) {
 378                         warnx("you have too many processes");
 379                         return(0);
 380                 }
 381                 if (errno == EAGAIN) {
 382                         sleep(1);
 383                         goto top;
 384                 }
 385                 warn("fork");
 386                 return (0);
 387         }
 388         if (pid == 0) {
 389                 register const char *ed;
 390
 391                 sigsetmask(omask);
 392                 setgid(getgid());
 393                 setuid(getuid());
 394                 if ((ed = getenv("EDITOR")) == (char *)0)
 395                         ed = _PATH_VI;
 396                 execlp(ed, ed, tmpf, (char *)0);
 397                 err(1, "%s", ed);
 398         }
 399         waitpid(pid, &status, 0);
 400         sigsetmask(omask);
 401         if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
 402                 return (0);
 403         return (1);
 404 }
 405
 406 /*
 407  * Convert a quotause list to an ASCII file.
 408  */
 409 int
 410 writeprivs(quplist, outfd, name, quotatype)
 411         struct quotause *quplist;
 412         int outfd;
 413         char *name;
 414         int quotatype;
 415 {
 416         register struct quotause *qup;
 417         FILE *fd;
 418
 419         ftruncate(outfd, 0);
 420         lseek(outfd, 0, L_SET);
 421         if ((fd = fdopen(dup(outfd), "w")) == NULL)
 422                 err(1, "%s", tmpfil);
 423         fprintf(fd, "Quotas for %s %s:\n", qfextension[quotatype], name);
 424         for (qup = quplist; qup; qup = qup->next) {
 425                 fprintf(fd, "%s: %s %lu, limits (soft = %lu, hard = %lu)\n",
 426                     qup->fsname, "blocks in use:",
 427                     (unsigned long)(dbtob(qup->dqblk.dqb_curblocks) / 1024),
 428                     (unsigned long)(dbtob(qup->dqblk.dqb_bsoftlimit) / 1024),
 429                     (unsigned long)(dbtob(qup->dqblk.dqb_bhardlimit) / 1024));
 430                 fprintf(fd, "%s %lu, limits (soft = %lu, hard = %lu)\n",
 431                     "\tinodes in use:",
 432                     (unsigned long)qup->dqblk.dqb_curinodes,
 433                     (unsigned long)qup->dqblk.dqb_isoftlimit,
 434                     (unsigned long)qup->dqblk.dqb_ihardlimit);
 435         }
 436         fclose(fd);
 437         return (1);
 438 }
 439
 440 /*
 441  * Merge changes to an ASCII file into a quotause list.
 442  */
 443 int
 444 readprivs(quplist, inname)
 445         struct quotause *quplist;
 446         char *inname;
 447 {
 448         register struct quotause *qup;
 449         FILE *fd;
 450         unsigned long bhardlimit, bsoftlimit, curblocks;
 451         unsigned long ihardlimit, isoftlimit, curinodes;
 452         int cnt;
 453         register char *cp;
 454         struct dqblk dqblk;
 455         char *fsp, line1[BUFSIZ], line2[BUFSIZ];
 456
 457         fd = fopen(inname, "r");
 458         if (fd == NULL) {
 459                 warnx("can't re-read temp file!!");
 460                 return (0);
 461         }
 462         /*
 463          * Discard title line, then read pairs of lines to process.
 464          */
 465         (void) fgets(line1, sizeof (line1), fd);
 466         while (fgets(line1, sizeof (line1), fd) != NULL &&
 467                fgets(line2, sizeof (line2), fd) != NULL) {
 468                 if ((fsp = strtok(line1, " \t:")) == NULL) {
 469                         warnx("%s: bad format", line1);
 470                         return (0);
 471                 }
 472                 if ((cp = strtok((char *)0, "\n")) == NULL) {
 473                         warnx("%s: %s: bad format", fsp, &fsp[strlen(fsp) + 1]);
 474                         return (0);
 475                 }
 476                 cnt = sscanf(cp,
 477                     " blocks in use: %lu, limits (soft = %lu, hard = %lu)",
 478                     &curblocks, &bsoftlimit, &bhardlimit);
 479                 if (cnt != 3) {
 480                         warnx("%s:%s: bad format", fsp, cp);
 481                         return (0);
 482                 }
 483                 dqblk.dqb_curblocks = btodb((off_t)curblocks * 1024);
 484                 dqblk.dqb_bsoftlimit = btodb((off_t)bsoftlimit * 1024);
 485                 dqblk.dqb_bhardlimit = btodb((off_t)bhardlimit * 1024);
 486                 if ((cp = strtok(line2, "\n")) == NULL) {
 487                         warnx("%s: %s: bad format", fsp, line2);
 488                         return (0);
 489                 }
 490                 cnt = sscanf(cp,
 491                     "\tinodes in use: %lu, limits (soft = %lu, hard = %lu)",
 492                     &curinodes, &isoftlimit, &ihardlimit);
 493                 if (cnt != 3) {
 494                         warnx("%s: %s: bad format", fsp, line2);
 495                         return (0);
 496                 }
 497                 dqblk.dqb_curinodes = curinodes;
 498                 dqblk.dqb_isoftlimit = isoftlimit;
 499                 dqblk.dqb_ihardlimit = ihardlimit;
 500                 for (qup = quplist; qup; qup = qup->next) {
 501                         if (strcmp(fsp, qup->fsname))
 502                                 continue;
 503                         /*
 504                          * Cause time limit to be reset when the quota
 505                          * is next used if previously had no soft limit
 506                          * or were under it, but now have a soft limit
 507                          * and are over it.
 508                          */
 509                         if (dqblk.dqb_bsoftlimit &&
 510                             qup->dqblk.dqb_curblocks >= dqblk.dqb_bsoftlimit &&
 511                             (qup->dqblk.dqb_bsoftlimit == 0 ||
 512                              qup->dqblk.dqb_curblocks <
 513                              qup->dqblk.dqb_bsoftlimit))
 514                                 qup->dqblk.dqb_btime = 0;
 515                         if (dqblk.dqb_isoftlimit &&
 516                             qup->dqblk.dqb_curinodes >= dqblk.dqb_isoftlimit &&
 517                             (qup->dqblk.dqb_isoftlimit == 0 ||
 518                              qup->dqblk.dqb_curinodes <
 519                              qup->dqblk.dqb_isoftlimit))
 520                                 qup->dqblk.dqb_itime = 0;
 521                         qup->dqblk.dqb_bsoftlimit = dqblk.dqb_bsoftlimit;
 522                         qup->dqblk.dqb_bhardlimit = dqblk.dqb_bhardlimit;
 523                         qup->dqblk.dqb_isoftlimit = dqblk.dqb_isoftlimit;
 524                         qup->dqblk.dqb_ihardlimit = dqblk.dqb_ihardlimit;
 525                         qup->flags |= FOUND;
 526                         if (dqblk.dqb_curblocks == qup->dqblk.dqb_curblocks &&
 527                             dqblk.dqb_curinodes == qup->dqblk.dqb_curinodes)
 528                                 break;
 529                         warnx("%s: cannot change current allocation", fsp);
 530                         break;
 531                 }
 532         }
 533         fclose(fd);
 534         /*
 535          * Disable quotas for any filesystems that have not been found.
 536          */
 537         for (qup = quplist; qup; qup = qup->next) {
 538                 if (qup->flags & FOUND) {
 539                         qup->flags &= ~FOUND;
 540                         continue;
 541                 }
 542                 qup->dqblk.dqb_bsoftlimit = 0;
 543                 qup->dqblk.dqb_bhardlimit = 0;
 544                 qup->dqblk.dqb_isoftlimit = 0;
 545                 qup->dqblk.dqb_ihardlimit = 0;
 546         }
 547         return (1);
 548 }
 549
 550 /*
 551  * Convert a quotause list to an ASCII file of grace times.
 552  */
 553 int
 554 writetimes(quplist, outfd, quotatype)
 555         struct quotause *quplist;
 556         int outfd;
 557         int quotatype;
 558 {
 559         register struct quotause *qup;
 560         FILE *fd;
 561
 562         ftruncate(outfd, 0);
 563         lseek(outfd, 0, L_SET);
 564         if ((fd = fdopen(dup(outfd), "w")) == NULL)
 565                 err(1, "%s", tmpfil);
 566         fprintf(fd, "Time units may be: days, hours, minutes, or seconds\n");
 567         fprintf(fd, "Grace period before enforcing soft limits for %ss:\n",
 568             qfextension[quotatype]);
 569         for (qup = quplist; qup; qup = qup->next) {
 570                 fprintf(fd, "%s: block grace period: %s, ",
 571                     qup->fsname, cvtstoa(qup->dqblk.dqb_btime));
 572                 fprintf(fd, "file grace period: %s\n",
 573                     cvtstoa(qup->dqblk.dqb_itime));
 574         }
 575         fclose(fd);
 576         return (1);
 577 }
 578
 579 /*
 580  * Merge changes of grace times in an ASCII file into a quotause list.
 581  */
 582 int
 583 readtimes(quplist, inname)
 584         struct quotause *quplist;
 585         char *inname;
 586 {
 587         register struct quotause *qup;
 588         FILE *fd;
 589         int cnt;
 590         register char *cp;
 591         time_t itime, btime, iseconds, bseconds;
 592         long l_itime, l_btime;
 593         char *fsp, bunits[10], iunits[10], line1[BUFSIZ];
 594
 595         fd = fopen(inname, "r");
 596         if (fd == NULL) {
 597                 warnx("can't re-read temp file!!");
 598                 return (0);
 599         }
 600         /*
 601          * Discard two title lines, then read lines to process.
 602          */
 603         (void) fgets(line1, sizeof (line1), fd);
 604         (void) fgets(line1, sizeof (line1), fd);
 605         while (fgets(line1, sizeof (line1), fd) != NULL) {
 606                 if ((fsp = strtok(line1, " \t:")) == NULL) {
 607                         warnx("%s: bad format", line1);
 608                         return (0);
 609                 }
 610                 if ((cp = strtok((char *)0, "\n")) == NULL) {
 611                         warnx("%s: %s: bad format", fsp, &fsp[strlen(fsp) + 1]);
 612                         return (0);
 613                 }
 614                 cnt = sscanf(cp,
 615                     " block grace period: %ld %s file grace period: %ld %s",
 616                     &l_btime, bunits, &l_itime, iunits);
 617                 if (cnt != 4) {
 618                         warnx("%s:%s: bad format", fsp, cp);
 619                         return (0);
 620                 }
 621                 btime = l_btime;
 622                 itime = l_itime;
 623                 if (cvtatos(btime, bunits, &bseconds) == 0)
 624                         return (0);
 625                 if (cvtatos(itime, iunits, &iseconds) == 0)
 626                         return (0);
 627                 for (qup = quplist; qup; qup = qup->next) {
 628                         if (strcmp(fsp, qup->fsname))
 629                                 continue;
 630                         qup->dqblk.dqb_btime = bseconds;
 631                         qup->dqblk.dqb_itime = iseconds;
 632                         qup->flags |= FOUND;
 633                         break;
 634                 }
 635         }
 636         fclose(fd);
 637         /*
 638          * reset default grace periods for any filesystems
 639          * that have not been found.
 640          */
 641         for (qup = quplist; qup; qup = qup->next) {
 642                 if (qup->flags & FOUND) {
 643                         qup->flags &= ~FOUND;
 644                         continue;
 645                 }
 646                 qup->dqblk.dqb_btime = 0;
 647                 qup->dqblk.dqb_itime = 0;
 648         }
 649         return (1);
 650 }
 651
 652 /*
 653  * Convert seconds to ASCII times.
 654  */
 655 char *
 656 cvtstoa(secs)
 657         time_t secs;
 658 {
 659         static char buf[20];
 660
 661         if (secs % (24 * 60 * 60) == 0) {
 662                 secs /= 24 * 60 * 60;
 663                 sprintf(buf, "%ld day%s", (long)secs, secs == 1 ? "" : "s");
 664         } else if (secs % (60 * 60) == 0) {
 665                 secs /= 60 * 60;
 666                 sprintf(buf, "%ld hour%s", (long)secs, secs == 1 ? "" : "s");
 667         } else if (secs % 60 == 0) {
 668                 secs /= 60;
 669                 sprintf(buf, "%ld minute%s", (long)secs, secs == 1 ? "" : "s");
 670         } else
 671                 sprintf(buf, "%ld second%s", (long)secs, secs == 1 ? "" : "s");
 672         return (buf);
 673 }
 674
 675 /*
 676  * Convert ASCII input times to seconds.
 677  */
 678 int
 679 cvtatos(period, units, seconds)
 680         time_t period;
 681         char *units;
 682         time_t *seconds;
 683 {
 684
 685         if (bcmp(units, "second", 6) == 0)
 686                 *seconds = period;
 687         else if (bcmp(units, "minute", 6) == 0)
 688                 *seconds = period * 60;
 689         else if (bcmp(units, "hour", 4) == 0)
 690                 *seconds = period * 60 * 60;
 691         else if (bcmp(units, "day", 3) == 0)
 692                 *seconds = period * 24 * 60 * 60;
 693         else {
 694                 printf("%s: bad units, specify %s\n", units,
 695                     "days, hours, minutes, or seconds");
 696                 return (0);
 697         }
 698         return (1);
 699 }
 700
 701 /*
 702  * Free a list of quotause structures.
 703  */
 704 void
 705 freeprivs(quplist)
 706         struct quotause *quplist;
 707 {
 708         register struct quotause *qup, *nextqup;
 709
 710         for (qup = quplist; qup; qup = nextqup) {
 711                 nextqup = qup->next;
 712                 free(qup);
 713         }
 714 }
 715
 716 /*
 717  * Check whether a string is completely composed of digits.
 718  */
 719 int
 720 alldigits(s)
 721         register const char *s;
 722 {
 723         register int c;
 724
 725         c = *s++;
 726         do {
 727                 if (!isdigit(c))
 728                         return (0);
 729         } while ((c = *s++));
 730         return (1);
 731 }
 732
 733 /*
 734  * Check to see if a particular quota is to be enabled.
 735  */
 736 int
 737 hasquota(fs, type, qfnamep)
 738         register struct fstab *fs;
 739         int type;
 740         char **qfnamep;
 741 {
 742         register char *opt;
 743         char *cp;
 744         static char initname, usrname[100], grpname[100];
 745         static char buf[BUFSIZ];
 746
 747         if (!initname) {
 748                 sprintf(usrname, "%s%s", qfextension[USRQUOTA], qfname);
 749                 sprintf(grpname, "%s%s", qfextension[GRPQUOTA], qfname);
 750                 initname = 1;
 751         }
 752         strcpy(buf, fs->fs_mntops);
 753         for (opt = strtok(buf, ","); opt; opt = strtok(NULL, ",")) {
 754                 if ((cp = index(opt, '=')))
 755                         *cp++ = '\0';
 756                 if (type == USRQUOTA && strcmp(opt, usrname) == 0)
 757                         break;
 758                 if (type == GRPQUOTA && strcmp(opt, grpname) == 0)
 759                         break;
 760         }
 761         if (!opt)
 762                 return (0);
 763         if (cp) {
 764                 *qfnamep = cp;
 765                 return (1);
 766         }
 767         (void) sprintf(buf, "%s/%s.%s", fs->fs_file, qfname, qfextension[type]);
 768         *qfnamep = buf;
 769         return (1);
 770 }