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