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  * 4. Neither the name of the University nor the names of its contributors
  17  *    may be used to endorse or promote products derived from this software
  18  *    without specific prior written permission.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  30  * SUCH DAMAGE.
  31  */
  32
  33 #if 0
  34 #ifndef lint
  35 static const char copyright[] =
  36 "@(#) Copyright (c) 1980, 1990, 1993\n\
  37         The Regents of the University of California.  All rights reserved.\n";
  38 #endif /* not lint */
  39
  40 #ifndef lint
  41 static char sccsid[] = "@(#)edquota.c   8.1 (Berkeley) 6/6/93";
  42 #endif /* not lint */
  43 #endif
  44
  45 #include <sys/cdefs.h>
  46 __FBSDID("$FreeBSD$");
  47
  48 /*
  49  * Disk quota editor.
  50  */
  51
  52 #include <sys/param.h>
  53 #include <sys/stat.h>
  54 #include <sys/file.h>
  55 #include <sys/mount.h>
  56 #include <sys/wait.h>
  57 #include <ufs/ufs/quota.h>
  58 #include <ctype.h>
  59 #include <err.h>
  60 #include <errno.h>
  61 #include <fstab.h>
  62 #include <grp.h>
  63 #include <pwd.h>
  64 #include <signal.h>
  65 #include <stdio.h>
  66 #include <stdlib.h>
  67 #include <string.h>
  68 #include <unistd.h>
  69 #include "pathnames.h"
  70
  71 const char *qfname = QUOTAFILENAME;
  72 const char *qfextension[] = INITQFNAMES;
  73 const char *quotagroup = QUOTAGROUP;
  74 char tmpfil[] = _PATH_TMP;
  75
  76 struct quotause {
  77         struct  quotause *next;
  78         long    flags;
  79         struct  dqblk dqblk;
  80         char    fsname[MAXPATHLEN + 1];
  81         char    qfname[1];      /* actually longer */
  82 };
  83 #define FOUND   0x01
  84
  85 int alldigits(const char *s);
  86 int cvtatos(time_t, char *, time_t *);
  87 char *cvtstoa(time_t);
  88 int editit(char *);
  89 void freeprivs(struct quotause *);
  90 int getentry(const char *, int);
  91 struct quotause *getprivs(long, int, char *);
  92 int hasquota(struct fstab *, int, char **);
  93 void putprivs(long, int, struct quotause *);
  94 int readprivs(struct quotause *, char *);
  95 int readtimes(struct quotause *, char *);
  96 static void usage(void);
  97 int writetimes(struct quotause *, int, int);
  98 int writeprivs(struct quotause *, int, char *, int);
  99
 100 int
 101 main(int argc, char *argv[])
 102 {
 103         struct quotause *qup, *protoprivs, *curprivs;
 104         long id, protoid;
 105         long long lim;
 106         int i, quotatype, range, tmpfd;
 107         uid_t startuid, enduid;
 108         u_int32_t *limp;
 109         char *protoname, *cp, *oldoptarg;
 110         int eflag = 0, tflag = 0, pflag = 0, ch;
 111         char *fspath = NULL;
 112         char buf[MAXLOGNAME];
 113
 114         if (argc < 2)
 115                 usage();
 116         if (getuid())
 117                 errx(1, "permission denied");
 118         quotatype = USRQUOTA;
 119         protoprivs = NULL;
 120         curprivs = NULL;
 121         protoname = NULL;
 122         while ((ch = getopt(argc, argv, "ugtf:p:e:")) != -1) {
 123                 switch(ch) {
 124                 case 'f':
 125                         fspath = optarg;
 126                         break;
 127                 case 'p':
 128                         protoname = optarg;
 129                         pflag++;
 130                         break;
 131                 case 'g':
 132                         quotatype = GRPQUOTA;
 133                         break;
 134                 case 'u':
 135                         quotatype = USRQUOTA;
 136                         break;
 137                 case 't':
 138                         tflag++;
 139                         break;
 140                 case 'e':
 141                         if ((qup = malloc(sizeof(*qup))) == NULL)
 142                                 errx(2, "out of memory");
 143                         bzero(qup, sizeof(*qup));
 144                         i = 0;
 145                         oldoptarg = optarg;
 146                         for (cp = optarg; (cp = strsep(&optarg, ":")) != NULL;
 147                             i++) {
 148                                 if (cp != oldoptarg)
 149                                         *(cp - 1) = ':';
 150                                 limp = NULL;
 151                                 switch (i) {
 152                                 case 0:
 153                                         strlcpy(qup->fsname, cp,
 154                                             sizeof(qup->fsname));
 155                                         break;
 156                                 case 1:
 157                                         limp = &qup->dqblk.dqb_bsoftlimit;
 158                                         break;
 159                                 case 2:
 160                                         limp = &qup->dqblk.dqb_bhardlimit;
 161                                         break;
 162                                 case 3:
 163                                         limp = &qup->dqblk.dqb_isoftlimit;
 164                                         break;
 165                                 case 4:
 166                                         limp = &qup->dqblk.dqb_ihardlimit;
 167                                         break;
 168                                 default:
 169                                         warnx("incorrect quota specification: "
 170                                             "%s", oldoptarg);
 171                                         usage();
 172                                         break; /* XXX: report an error */
 173                                 }
 174                                 if (limp != NULL) {
 175                                         lim = strtoll(cp, NULL, 10);
 176                                         if (lim < 0 || lim > UINT_MAX)
 177                                                 errx(1, "invalid limit value: "
 178                                                     "%lld", lim);
 179                                         *limp = (u_int32_t)lim;
 180                                 }
 181                         }
 182                         qup->dqblk.dqb_bsoftlimit =
 183                             btodb((off_t)qup->dqblk.dqb_bsoftlimit * 1024);
 184                         qup->dqblk.dqb_bhardlimit =
 185                             btodb((off_t)qup->dqblk.dqb_bhardlimit * 1024);
 186                         if (protoprivs == NULL) {
 187                                 protoprivs = curprivs = qup;
 188                         } else {
 189                                 curprivs->next = qup;
 190                                 curprivs = qup;
 191                         }
 192                         eflag++;
 193                         pflag++;
 194                         break;
 195                 default:
 196                         usage();
 197                 }
 198         }
 199         argc -= optind;
 200         argv += optind;
 201         if (pflag) {
 202                 if (protoprivs == NULL) {
 203                         if ((protoid = getentry(protoname, quotatype)) == -1)
 204                                 exit(1);
 205                         protoprivs = getprivs(protoid, quotatype, fspath);
 206                         for (qup = protoprivs; qup; qup = qup->next) {
 207                                 qup->dqblk.dqb_btime = 0;
 208                                 qup->dqblk.dqb_itime = 0;
 209                         }
 210                 }
 211                 for (; argc-- > 0; argv++) {
 212                         if (strspn(*argv, "0123456789-") == strlen(*argv) &&
 213                             (cp = strchr(*argv, '-')) != NULL) {
 214                                 *cp++ = '\0';
 215                                 startuid = atoi(*argv);
 216                                 enduid = atoi(cp);
 217                                 if (enduid < startuid)
 218                                         errx(1,
 219         "ending uid (%d) must be >= starting uid (%d) when using uid ranges",
 220                                                 enduid, startuid);
 221                                 range = 1;
 222                         } else {
 223                                 startuid = enduid = 0;
 224                                 range = 0;
 225                         }
 226                         for ( ; startuid <= enduid; startuid++) {
 227                                 if (range)
 228                                         snprintf(buf, sizeof(buf), "%d",
 229                                             startuid);
 230                                 else
 231                                         snprintf(buf, sizeof(buf), "%s",
 232                                                 *argv);
 233                                 if ((id = getentry(buf, quotatype)) < 0)
 234                                         continue;
 235                                 if (eflag) {
 236                                         for (qup = protoprivs; qup;
 237                                             qup = qup->next) {
 238                                                 curprivs = getprivs(id,
 239                                                     quotatype, qup->fsname);
 240                                                 if (curprivs == NULL)
 241                                                         continue;
 242                                                 strcpy(qup->qfname,
 243                                                     curprivs->qfname);
 244                                                 strcpy(qup->fsname,
 245                                                     curprivs->fsname);
 246                                         }
 247                                 }
 248                                 putprivs(id, quotatype, protoprivs);
 249                         }
 250                 }
 251                 exit(0);
 252         }
 253         tmpfd = mkstemp(tmpfil);
 254         fchown(tmpfd, getuid(), getgid());
 255         if (tflag) {
 256                 protoprivs = getprivs(0, quotatype, fspath);
 257                 if (writetimes(protoprivs, tmpfd, quotatype) == 0)
 258                         exit(1);
 259                 if (editit(tmpfil) && readtimes(protoprivs, tmpfil))
 260                         putprivs(0L, quotatype, protoprivs);
 261                 freeprivs(protoprivs);
 262                 close(tmpfd);
 263                 unlink(tmpfil);
 264                 exit(0);
 265         }
 266         for ( ; argc > 0; argc--, argv++) {
 267                 if ((id = getentry(*argv, quotatype)) == -1)
 268                         continue;
 269                 curprivs = getprivs(id, quotatype, fspath);
 270                 if (writeprivs(curprivs, tmpfd, *argv, quotatype) == 0)
 271                         continue;
 272                 if (editit(tmpfil) && readprivs(curprivs, tmpfil))
 273                         putprivs(id, quotatype, curprivs);
 274                 freeprivs(curprivs);
 275         }
 276         close(tmpfd);
 277         unlink(tmpfil);
 278         exit(0);
 279 }
 280
 281 static void
 282 usage(void)
 283 {
 284         fprintf(stderr, "%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n",
 285                 "usage: edquota [-u] [-f fspath] [-p username] username ...",
 286                 "       edquota [-u] -e fspath[:bslim[:bhlim[:islim[:ihlim]]]] [-e ...]",
 287                 "               username ...",
 288                 "       edquota -g [-f fspath] [-p groupname] groupname ...",
 289                 "       edquota -g -e fspath[:bslim[:bhlim[:islim[:ihlim]]]] [-e ...]",
 290                 "               groupname ...",
 291                 "       edquota [-u] -t [-f fspath]",
 292                 "       edquota -g -t [-f fspath]");
 293         exit(1);
 294 }
 295
 296 /*
 297  * This routine converts a name for a particular quota type to
 298  * an identifier. This routine must agree with the kernel routine
 299  * getinoquota as to the interpretation of quota types.
 300  */
 301 int
 302 getentry(const char *name, int quotatype)
 303 {
 304         struct passwd *pw;
 305         struct group *gr;
 306
 307         if (alldigits(name))
 308                 return (atoi(name));
 309         switch(quotatype) {
 310         case USRQUOTA:
 311                 if ((pw = getpwnam(name)))
 312                         return (pw->pw_uid);
 313                 warnx("%s: no such user", name);
 314                 break;
 315         case GRPQUOTA:
 316                 if ((gr = getgrnam(name)))
 317                         return (gr->gr_gid);
 318                 warnx("%s: no such group", name);
 319                 break;
 320         default:
 321                 warnx("%d: unknown quota type", quotatype);
 322                 break;
 323         }
 324         sleep(1);
 325         return (-1);
 326 }
 327
 328 /*
 329  * Collect the requested quota information.
 330  */
 331 struct quotause *
 332 getprivs(long id, int quotatype, char *fspath)
 333 {
 334         struct fstab *fs;
 335         struct quotause *qup, *quptail;
 336         struct quotause *quphead;
 337         int qcmd, qupsize, fd;
 338         char *qfpathname;
 339         static int warned = 0;
 340
 341         setfsent();
 342         quphead = quptail = NULL;
 343         qcmd = QCMD(Q_GETQUOTA, quotatype);
 344         while ((fs = getfsent())) {
 345                 if (fspath && *fspath && strcmp(fspath, fs->fs_spec) &&
 346                     strcmp(fspath, fs->fs_file))
 347                         continue;
 348                 if (strcmp(fs->fs_vfstype, "ufs"))
 349                         continue;
 350                 if (!hasquota(fs, quotatype, &qfpathname))
 351                         continue;
 352                 qupsize = sizeof(*qup) + strlen(qfpathname);
 353                 if ((qup = (struct quotause *)malloc(qupsize)) == NULL)
 354                         errx(2, "out of memory");
 355                 if (quotactl(fs->fs_file, qcmd, id, &qup->dqblk) != 0) {
 356                         if (errno == EOPNOTSUPP && !warned) {
 357                                 warned++;
 358                 warnx("warning: quotas are not compiled into this kernel");
 359                                 sleep(3);
 360                         }
 361                         if ((fd = open(qfpathname, O_RDONLY)) < 0) {
 362                                 fd = open(qfpathname, O_RDWR|O_CREAT, 0640);
 363                                 if (fd < 0 && errno != ENOENT) {
 364                                         warn("%s", qfpathname);
 365                                         free(qup);
 366                                         continue;
 367                                 }
 368                                 warnx("creating quota file %s", qfpathname);
 369                                 sleep(3);
 370                                 (void) fchown(fd, getuid(),
 371                                     getentry(quotagroup, GRPQUOTA));
 372                                 (void) fchmod(fd, 0640);
 373                         }
 374                         if (lseek(fd, (off_t)id * sizeof(struct dqblk),
 375                             L_SET) < 0) {
 376                                 warn("seek error on %s", qfpathname);
 377                                 close(fd);
 378                                 free(qup);
 379                                 continue;
 380                         }
 381                         switch (read(fd, &qup->dqblk, sizeof(struct dqblk))) {
 382                         case 0:                 /* EOF */
 383                                 /*
 384                                  * Convert implicit 0 quota (EOF)
 385                                  * into an explicit one (zero'ed dqblk)
 386                                  */
 387                                 bzero((caddr_t)&qup->dqblk,
 388                                     sizeof(struct dqblk));
 389                                 break;
 390
 391                         case sizeof(struct dqblk):      /* OK */
 392                                 break;
 393
 394                         default:                /* ERROR */
 395                                 warn("read error in %s", qfpathname);
 396                                 close(fd);
 397                                 free(qup);
 398                                 continue;
 399                         }
 400                         close(fd);
 401                 }
 402                 strcpy(qup->qfname, qfpathname);
 403                 strcpy(qup->fsname, fs->fs_file);
 404                 if (quphead == NULL)
 405                         quphead = qup;
 406                 else
 407                         quptail->next = qup;
 408                 quptail = qup;
 409                 qup->next = 0;
 410         }
 411         endfsent();
 412         return (quphead);
 413 }
 414
 415 /*
 416  * Store the requested quota information.
 417  */
 418 void
 419 putprivs(long id, int quotatype, struct quotause *quplist)
 420 {
 421         struct quotause *qup;
 422         int qcmd, fd;
 423         struct dqblk dqbuf;
 424
 425         qcmd = QCMD(Q_SETQUOTA, quotatype);
 426         for (qup = quplist; qup; qup = qup->next) {
 427                 if (quotactl(qup->fsname, qcmd, id, &qup->dqblk) == 0)
 428                         continue;
 429                 if ((fd = open(qup->qfname, O_RDWR)) < 0) {
 430                         warn("%s", qup->qfname);
 431                         continue;
 432                 }
 433                 if (lseek(fd, (off_t)id * sizeof(struct dqblk), L_SET) < 0) {
 434                         warn("seek error on %s", qup->qfname);
 435                         close(fd);
 436                         continue;
 437                 }
 438                 switch (read(fd, &dqbuf, sizeof(struct dqblk))) {
 439                 case 0:                 /* EOF */
 440                         /*
 441                          * Convert implicit 0 quota (EOF)
 442                          * into an explicit one (zero'ed dqblk)
 443                          */
 444                         bzero(&dqbuf, sizeof(struct dqblk));
 445                         break;
 446
 447                 case sizeof(struct dqblk):      /* OK */
 448                         break;
 449
 450                 default:                /* ERROR */
 451                         warn("read error in %s", qup->qfname);
 452                         close(fd);
 453                         continue;
 454                 }
 455                 /*
 456                  * Reset time limit if have a soft limit and were
 457                  * previously under it, but are now over it
 458                  * or if there previously was no soft limit, but
 459                  * now have one and are over it.
 460                  */
 461                 if (dqbuf.dqb_bsoftlimit && id != 0 &&
 462                     dqbuf.dqb_curblocks < dqbuf.dqb_bsoftlimit &&
 463                     dqbuf.dqb_curblocks >= qup->dqblk.dqb_bsoftlimit)
 464                         qup->dqblk.dqb_btime = 0;
 465                 if (dqbuf.dqb_bsoftlimit == 0 && id != 0 &&
 466                     dqbuf.dqb_curblocks >= qup->dqblk.dqb_bsoftlimit)
 467                         qup->dqblk.dqb_btime = 0;
 468                 if (dqbuf.dqb_isoftlimit && id != 0 &&
 469                     dqbuf.dqb_curinodes < dqbuf.dqb_isoftlimit &&
 470                     dqbuf.dqb_curinodes >= qup->dqblk.dqb_isoftlimit)
 471                         qup->dqblk.dqb_itime = 0;
 472                 if (dqbuf.dqb_isoftlimit == 0 && id !=0 &&
 473                     dqbuf.dqb_curinodes >= qup->dqblk.dqb_isoftlimit)
 474                         qup->dqblk.dqb_itime = 0;
 475                 qup->dqblk.dqb_curinodes = dqbuf.dqb_curinodes;
 476                 qup->dqblk.dqb_curblocks = dqbuf.dqb_curblocks;
 477                 if (lseek(fd, (off_t)id * sizeof(struct dqblk), L_SET) < 0) {
 478                         warn("seek error on %s", qup->qfname);
 479                         close(fd);
 480                         continue;
 481                 }
 482                 if (write(fd, &qup->dqblk, sizeof (struct dqblk)) !=
 483                     sizeof (struct dqblk)) {
 484                         warn("%s", qup->qfname);
 485                         }
 486                 close(fd);
 487         }
 488 }
 489
 490 /*
 491  * Take a list of priviledges and get it edited.
 492  */
 493 int
 494 editit(char *tmpf)
 495 {
 496         long omask;
 497         int pid, status;
 498
 499         omask = sigblock(sigmask(SIGINT)|sigmask(SIGQUIT)|sigmask(SIGHUP));
 500  top:
 501         if ((pid = fork()) < 0) {
 502
 503                 if (errno == EPROCLIM) {
 504                         warnx("you have too many processes");
 505                         return(0);
 506                 }
 507                 if (errno == EAGAIN) {
 508                         sleep(1);
 509                         goto top;
 510                 }
 511                 warn("fork");
 512                 return (0);
 513         }
 514         if (pid == 0) {
 515                 const char *ed;
 516
 517                 sigsetmask(omask);
 518                 setgid(getgid());
 519                 setuid(getuid());
 520                 if ((ed = getenv("EDITOR")) == (char *)0)
 521                         ed = _PATH_VI;
 522                 execlp(ed, ed, tmpf, (char *)0);
 523                 err(1, "%s", ed);
 524         }
 525         waitpid(pid, &status, 0);
 526         sigsetmask(omask);
 527         if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
 528                 return (0);
 529         return (1);
 530 }
 531
 532 /*
 533  * Convert a quotause list to an ASCII file.
 534  */
 535 int
 536 writeprivs(struct quotause *quplist, int outfd, char *name, int quotatype)
 537 {
 538         struct quotause *qup;
 539         FILE *fd;
 540
 541         ftruncate(outfd, 0);
 542         lseek(outfd, 0, L_SET);
 543         if ((fd = fdopen(dup(outfd), "w")) == NULL)
 544                 err(1, "%s", tmpfil);
 545         fprintf(fd, "Quotas for %s %s:\n", qfextension[quotatype], name);
 546         for (qup = quplist; qup; qup = qup->next) {
 547                 fprintf(fd, "%s: %s %lu, limits (soft = %lu, hard = %lu)\n",
 548                     qup->fsname, "kbytes in use:",
 549                     (unsigned long)(dbtob(qup->dqblk.dqb_curblocks) / 1024),
 550                     (unsigned long)(dbtob(qup->dqblk.dqb_bsoftlimit) / 1024),
 551                     (unsigned long)(dbtob(qup->dqblk.dqb_bhardlimit) / 1024));
 552                 fprintf(fd, "%s %lu, limits (soft = %lu, hard = %lu)\n",
 553                     "\tinodes in use:",
 554                     (unsigned long)qup->dqblk.dqb_curinodes,
 555                     (unsigned long)qup->dqblk.dqb_isoftlimit,
 556                     (unsigned long)qup->dqblk.dqb_ihardlimit);
 557         }
 558         fclose(fd);
 559         return (1);
 560 }
 561
 562 /*
 563  * Merge changes to an ASCII file into a quotause list.
 564  */
 565 int
 566 readprivs(struct quotause *quplist, char *inname)
 567 {
 568         struct quotause *qup;
 569         FILE *fd;
 570         unsigned long bhardlimit, bsoftlimit, curblocks;
 571         unsigned long ihardlimit, isoftlimit, curinodes;
 572         int cnt;
 573         char *cp;
 574         struct dqblk dqblk;
 575         char *fsp, line1[BUFSIZ], line2[BUFSIZ];
 576
 577         fd = fopen(inname, "r");
 578         if (fd == NULL) {
 579                 warnx("can't re-read temp file!!");
 580                 return (0);
 581         }
 582         /*
 583          * Discard title line, then read pairs of lines to process.
 584          */
 585         (void) fgets(line1, sizeof (line1), fd);
 586         while (fgets(line1, sizeof (line1), fd) != NULL &&
 587                fgets(line2, sizeof (line2), fd) != NULL) {
 588                 if ((fsp = strtok(line1, " \t:")) == NULL) {
 589                         warnx("%s: bad format", line1);
 590                         return (0);
 591                 }
 592                 if ((cp = strtok((char *)0, "\n")) == NULL) {
 593                         warnx("%s: %s: bad format", fsp, &fsp[strlen(fsp) + 1]);
 594                         return (0);
 595                 }
 596                 cnt = sscanf(cp,
 597                     " kbytes in use: %lu, limits (soft = %lu, hard = %lu)",
 598                     &curblocks, &bsoftlimit, &bhardlimit);
 599                 if (cnt != 3) {
 600                         warnx("%s:%s: bad format", fsp, cp);
 601                         return (0);
 602                 }
 603                 dqblk.dqb_curblocks = btodb((off_t)curblocks * 1024);
 604                 dqblk.dqb_bsoftlimit = btodb((off_t)bsoftlimit * 1024);
 605                 dqblk.dqb_bhardlimit = btodb((off_t)bhardlimit * 1024);
 606                 if ((cp = strtok(line2, "\n")) == NULL) {
 607                         warnx("%s: %s: bad format", fsp, line2);
 608                         return (0);
 609                 }
 610                 cnt = sscanf(cp,
 611                     "\tinodes in use: %lu, limits (soft = %lu, hard = %lu)",
 612                     &curinodes, &isoftlimit, &ihardlimit);
 613                 if (cnt != 3) {
 614                         warnx("%s: %s: bad format", fsp, line2);
 615                         return (0);
 616                 }
 617                 dqblk.dqb_curinodes = curinodes;
 618                 dqblk.dqb_isoftlimit = isoftlimit;
 619                 dqblk.dqb_ihardlimit = ihardlimit;
 620                 for (qup = quplist; qup; qup = qup->next) {
 621                         if (strcmp(fsp, qup->fsname))
 622                                 continue;
 623                         /*
 624                          * Cause time limit to be reset when the quota
 625                          * is next used if previously had no soft limit
 626                          * or were under it, but now have a soft limit
 627                          * and are over it.
 628                          */
 629                         if (dqblk.dqb_bsoftlimit &&
 630                             qup->dqblk.dqb_curblocks >= dqblk.dqb_bsoftlimit &&
 631                             (qup->dqblk.dqb_bsoftlimit == 0 ||
 632                              qup->dqblk.dqb_curblocks <
 633                              qup->dqblk.dqb_bsoftlimit))
 634                                 qup->dqblk.dqb_btime = 0;
 635                         if (dqblk.dqb_isoftlimit &&
 636                             qup->dqblk.dqb_curinodes >= dqblk.dqb_isoftlimit &&
 637                             (qup->dqblk.dqb_isoftlimit == 0 ||
 638                              qup->dqblk.dqb_curinodes <
 639                              qup->dqblk.dqb_isoftlimit))
 640                                 qup->dqblk.dqb_itime = 0;
 641                         qup->dqblk.dqb_bsoftlimit = dqblk.dqb_bsoftlimit;
 642                         qup->dqblk.dqb_bhardlimit = dqblk.dqb_bhardlimit;
 643                         qup->dqblk.dqb_isoftlimit = dqblk.dqb_isoftlimit;
 644                         qup->dqblk.dqb_ihardlimit = dqblk.dqb_ihardlimit;
 645                         qup->flags |= FOUND;
 646                         if (dqblk.dqb_curblocks == qup->dqblk.dqb_curblocks &&
 647                             dqblk.dqb_curinodes == qup->dqblk.dqb_curinodes)
 648                                 break;
 649                         warnx("%s: cannot change current allocation", fsp);
 650                         break;
 651                 }
 652         }
 653         fclose(fd);
 654         /*
 655          * Disable quotas for any filesystems that have not been found.
 656          */
 657         for (qup = quplist; qup; qup = qup->next) {
 658                 if (qup->flags & FOUND) {
 659                         qup->flags &= ~FOUND;
 660                         continue;
 661                 }
 662                 qup->dqblk.dqb_bsoftlimit = 0;
 663                 qup->dqblk.dqb_bhardlimit = 0;
 664                 qup->dqblk.dqb_isoftlimit = 0;
 665                 qup->dqblk.dqb_ihardlimit = 0;
 666         }
 667         return (1);
 668 }
 669
 670 /*
 671  * Convert a quotause list to an ASCII file of grace times.
 672  */
 673 int
 674 writetimes(struct quotause *quplist, int outfd, int quotatype)
 675 {
 676         struct quotause *qup;
 677         FILE *fd;
 678
 679         ftruncate(outfd, 0);
 680         lseek(outfd, 0, L_SET);
 681         if ((fd = fdopen(dup(outfd), "w")) == NULL)
 682                 err(1, "%s", tmpfil);
 683         fprintf(fd, "Time units may be: days, hours, minutes, or seconds\n");
 684         fprintf(fd, "Grace period before enforcing soft limits for %ss:\n",
 685             qfextension[quotatype]);
 686         for (qup = quplist; qup; qup = qup->next) {
 687                 fprintf(fd, "%s: block grace period: %s, ",
 688                     qup->fsname, cvtstoa(qup->dqblk.dqb_btime));
 689                 fprintf(fd, "file grace period: %s\n",
 690                     cvtstoa(qup->dqblk.dqb_itime));
 691         }
 692         fclose(fd);
 693         return (1);
 694 }
 695
 696 /*
 697  * Merge changes of grace times in an ASCII file into a quotause list.
 698  */
 699 int
 700 readtimes(struct quotause *quplist, char *inname)
 701 {
 702         struct quotause *qup;
 703         FILE *fd;
 704         int cnt;
 705         char *cp;
 706         time_t itime, btime, iseconds, bseconds;
 707         long l_itime, l_btime;
 708         char *fsp, bunits[10], iunits[10], line1[BUFSIZ];
 709
 710         fd = fopen(inname, "r");
 711         if (fd == NULL) {
 712                 warnx("can't re-read temp file!!");
 713                 return (0);
 714         }
 715         /*
 716          * Discard two title lines, then read lines to process.
 717          */
 718         (void) fgets(line1, sizeof (line1), fd);
 719         (void) fgets(line1, sizeof (line1), fd);
 720         while (fgets(line1, sizeof (line1), fd) != NULL) {
 721                 if ((fsp = strtok(line1, " \t:")) == NULL) {
 722                         warnx("%s: bad format", line1);
 723                         return (0);
 724                 }
 725                 if ((cp = strtok((char *)0, "\n")) == NULL) {
 726                         warnx("%s: %s: bad format", fsp, &fsp[strlen(fsp) + 1]);
 727                         return (0);
 728                 }
 729                 cnt = sscanf(cp,
 730                     " block grace period: %ld %s file grace period: %ld %s",
 731                     &l_btime, bunits, &l_itime, iunits);
 732                 if (cnt != 4) {
 733                         warnx("%s:%s: bad format", fsp, cp);
 734                         return (0);
 735                 }
 736                 btime = l_btime;
 737                 itime = l_itime;
 738                 if (cvtatos(btime, bunits, &bseconds) == 0)
 739                         return (0);
 740                 if (cvtatos(itime, iunits, &iseconds) == 0)
 741                         return (0);
 742                 for (qup = quplist; qup; qup = qup->next) {
 743                         if (strcmp(fsp, qup->fsname))
 744                                 continue;
 745                         qup->dqblk.dqb_btime = bseconds;
 746                         qup->dqblk.dqb_itime = iseconds;
 747                         qup->flags |= FOUND;
 748                         break;
 749                 }
 750         }
 751         fclose(fd);
 752         /*
 753          * reset default grace periods for any filesystems
 754          * that have not been found.
 755          */
 756         for (qup = quplist; qup; qup = qup->next) {
 757                 if (qup->flags & FOUND) {
 758                         qup->flags &= ~FOUND;
 759                         continue;
 760                 }
 761                 qup->dqblk.dqb_btime = 0;
 762                 qup->dqblk.dqb_itime = 0;
 763         }
 764         return (1);
 765 }
 766
 767 /*
 768  * Convert seconds to ASCII times.
 769  */
 770 char *
 771 cvtstoa(time_t secs)
 772 {
 773         static char buf[20];
 774
 775         if (secs % (24 * 60 * 60) == 0) {
 776                 secs /= 24 * 60 * 60;
 777                 sprintf(buf, "%ld day%s", (long)secs, secs == 1 ? "" : "s");
 778         } else if (secs % (60 * 60) == 0) {
 779                 secs /= 60 * 60;
 780                 sprintf(buf, "%ld hour%s", (long)secs, secs == 1 ? "" : "s");
 781         } else if (secs % 60 == 0) {
 782                 secs /= 60;
 783                 sprintf(buf, "%ld minute%s", (long)secs, secs == 1 ? "" : "s");
 784         } else
 785                 sprintf(buf, "%ld second%s", (long)secs, secs == 1 ? "" : "s");
 786         return (buf);
 787 }
 788
 789 /*
 790  * Convert ASCII input times to seconds.
 791  */
 792 int
 793 cvtatos(time_t period, char *units, time_t *seconds)
 794 {
 795
 796         if (bcmp(units, "second", 6) == 0)
 797                 *seconds = period;
 798         else if (bcmp(units, "minute", 6) == 0)
 799                 *seconds = period * 60;
 800         else if (bcmp(units, "hour", 4) == 0)
 801                 *seconds = period * 60 * 60;
 802         else if (bcmp(units, "day", 3) == 0)
 803                 *seconds = period * 24 * 60 * 60;
 804         else {
 805                 printf("%s: bad units, specify %s\n", units,
 806                     "days, hours, minutes, or seconds");
 807                 return (0);
 808         }
 809         return (1);
 810 }
 811
 812 /*
 813  * Free a list of quotause structures.
 814  */
 815 void
 816 freeprivs(struct quotause *quplist)
 817 {
 818         struct quotause *qup, *nextqup;
 819
 820         for (qup = quplist; qup; qup = nextqup) {
 821                 nextqup = qup->next;
 822                 free(qup);
 823         }
 824 }
 825
 826 /*
 827  * Check whether a string is completely composed of digits.
 828  */
 829 int
 830 alldigits(const char *s)
 831 {
 832         int c;
 833
 834         c = *s++;
 835         do {
 836                 if (!isdigit(c))
 837                         return (0);
 838         } while ((c = *s++));
 839         return (1);
 840 }
 841
 842 /*
 843  * Check to see if a particular quota is to be enabled.
 844  */
 845 int
 846 hasquota(struct fstab *fs, int type, char **qfnamep)
 847 {
 848         char *opt;
 849         char *cp;
 850         struct statfs sfb;
 851         static char initname, usrname[100], grpname[100];
 852         static char buf[BUFSIZ];
 853
 854         if (!initname) {
 855                 (void)snprintf(usrname, sizeof(usrname), "%s%s",
 856                     qfextension[USRQUOTA], qfname);
 857                 (void)snprintf(grpname, sizeof(grpname), "%s%s",
 858                     qfextension[GRPQUOTA], qfname);
 859                 initname = 1;
 860         }
 861         strcpy(buf, fs->fs_mntops);
 862         for (opt = strtok(buf, ","); opt; opt = strtok(NULL, ",")) {
 863                 if ((cp = index(opt, '=')))
 864                         *cp++ = '\0';
 865                 if (type == USRQUOTA && strcmp(opt, usrname) == 0)
 866                         break;
 867                 if (type == GRPQUOTA && strcmp(opt, grpname) == 0)
 868                         break;
 869         }
 870         if (!opt)
 871                 return (0);
 872         if (cp)
 873                 *qfnamep = cp;
 874         else {
 875                 (void)snprintf(buf, sizeof(buf), "%s/%s.%s", fs->fs_file,
 876                     qfname, qfextension[type]);
 877                 *qfnamep = buf;
 878         }
 879         if (statfs(fs->fs_file, &sfb) != 0) {
 880                 warn("cannot statfs mount point %s", fs->fs_file);
 881                 return (0);
 882         }
 883         if (strcmp(fs->fs_file, sfb.f_mntonname)) {
 884                 warnx("%s not mounted for %s quotas", fs->fs_file,
 885                     type == USRQUOTA ? "user" : "group");
 886                 sleep(3);
 887                 return (0);
 888         }
 889         return (1);
 890 }