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  * @(#) Copyright (c) 1980, 1990, 1993 The Regents of the University of California.  All rights reserved.
  37  * @(#)edquota.c        8.1 (Berkeley) 6/6/93
  38  * $FreeBSD: src/usr.sbin/edquota/edquota.c,v 1.9.2.6 2002/10/31 22:38:43 iedowse Exp $
  39  * $DragonFly: src/usr.sbin/edquota/edquota.c,v 1.8 2006/04/03 01:58:49 dillon Exp $
  40  */
  41
  42 /*
  43  * Disk quota editor.
  44  */
  45 #include <sys/param.h>
  46 #include <sys/stat.h>
  47 #include <sys/file.h>
  48 #include <sys/wait.h>
  49 #include <vfs/ufs/quota.h>
  50 #include <ctype.h>
  51 #include <err.h>
  52 #include <errno.h>
  53 #include <fstab.h>
  54 #include <grp.h>
  55 #include <pwd.h>
  56 #include <signal.h>
  57 #include <stdio.h>
  58 #include <stdlib.h>
  59 #include <string.h>
  60 #include <unistd.h>
  61 #include "pathnames.h"
  62
  63 const char *qfname = QUOTAFILENAME;
  64 const char *qfextension[] = INITQFNAMES;
  65 const char *quotagroup = QUOTAGROUP;
  66 char tmpfil[] = _PATH_TMP;
  67
  68 struct quotause {
  69         struct  quotause *next;
  70         long    flags;
  71         struct  ufs_dqblk dqblk;
  72         char    fsname[MAXPATHLEN + 1];
  73         char    qfname[1];      /* actually longer */
  74 };
  75 #define FOUND   0x01
  76
  77 int alldigits(const char *s);
  78 int cvtatos(time_t, char *, time_t *);
  79 char *cvtstoa(time_t);
  80 int editit(char *);
  81 void freeprivs(struct quotause *);
  82 int getentry(const char *, int);
  83 struct quotause *getprivs(long, int, char *);
  84 int hasquota(struct fstab *, int, char **);
  85 void putprivs(long, int, struct quotause *);
  86 int readprivs(struct quotause *, char *);
  87 int readtimes(struct quotause *, char *);
  88 static void usage(void);
  89 int writetimes(struct quotause *, int, int);
  90 int writeprivs(struct quotause *, int, char *, int);
  91
  92 int
  93 main(int argc, char **argv)
  94 {
  95         struct quotause *qup, *protoprivs, *curprivs;
  96         long id, protoid;
  97         long long lim;
  98         int i, quotatype, range, tmpfd;
  99         uid_t startuid, enduid;
 100         u_int32_t *limp;
 101         char *protoname, *cp, *oldoptarg, ch;
 102         int eflag = 0, tflag = 0, pflag = 0;
 103         char *fspath = NULL;
 104         char buf[MAXLOGNAME];
 105
 106         if (argc < 2)
 107                 usage();
 108         if (getuid())
 109                 errx(1, "permission denied");
 110         quotatype = USRQUOTA;
 111         protoprivs = NULL;
 112         while ((ch = getopt(argc, argv, "ugtf:p:e:")) != -1) {
 113                 switch(ch) {
 114                 case 'f':
 115                         fspath = optarg;
 116                         break;
 117                 case 'p':
 118                         protoname = optarg;
 119                         pflag++;
 120                         break;
 121                 case 'g':
 122                         quotatype = GRPQUOTA;
 123                         break;
 124                 case 'u':
 125                         quotatype = USRQUOTA;
 126                         break;
 127                 case 't':
 128                         tflag++;
 129                         break;
 130                 case 'e':
 131                         if ((qup = malloc(sizeof(*qup))) == NULL)
 132                                 errx(2, "out of memory");
 133                         bzero(qup, sizeof(*qup));
 134                         i = 0;
 135                         oldoptarg = optarg;
 136                         for (cp = optarg; (cp = strsep(&optarg, ":")) != NULL;
 137                             i++) {
 138                                 if (cp != oldoptarg)
 139                                         *(cp - 1) = ':';
 140                                 limp = NULL;
 141                                 switch (i) {
 142                                 case 0:
 143                                         strlcpy(qup->fsname, cp,
 144                                             sizeof(qup->fsname));
 145                                         break;
 146                                 case 1:
 147                                         limp = &qup->dqblk.dqb_bsoftlimit;
 148                                         break;
 149                                 case 2:
 150                                         limp = &qup->dqblk.dqb_bhardlimit;
 151                                         break;
 152                                 case 3:
 153                                         limp = &qup->dqblk.dqb_isoftlimit;
 154                                         break;
 155                                 case 4:
 156                                         limp = &qup->dqblk.dqb_ihardlimit;
 157                                         break;
 158                                 default:
 159                                         warnx("incorrect quota specification: "
 160                                             "%s", oldoptarg);
 161                                         usage();
 162                                         break; /* XXX: report an error */
 163                                 }
 164                                 if (limp != NULL) {
 165                                         lim = strtoll(cp, NULL, 10);
 166                                         if (lim < 0 || lim > UINT_MAX)
 167                                                 errx(1, "invalid limit value: "
 168                                                     "%lld", lim);
 169                                         *limp = (u_int32_t)lim;
 170                                 }
 171                         }
 172                         qup->dqblk.dqb_bsoftlimit =
 173                             btodb((off_t)qup->dqblk.dqb_bsoftlimit * 1024);
 174                         qup->dqblk.dqb_bhardlimit =
 175                             btodb((off_t)qup->dqblk.dqb_bhardlimit * 1024);
 176                         if (protoprivs == NULL) {
 177                                 protoprivs = curprivs = qup;
 178                         } else {
 179                                 curprivs->next = qup;
 180                                 curprivs = qup;
 181                         }
 182                         eflag++;
 183                         pflag++;
 184                         break;
 185                 default:
 186                         usage();
 187                 }
 188         }
 189         argc -= optind;
 190         argv += optind;
 191         if (pflag) {
 192                 if (protoprivs == NULL) {
 193                         if ((protoid = getentry(protoname, quotatype)) == -1)
 194                                 exit(1);
 195                         protoprivs = getprivs(protoid, quotatype, fspath);
 196                         for (qup = protoprivs; qup; qup = qup->next) {
 197                                 qup->dqblk.dqb_btime = 0;
 198                                 qup->dqblk.dqb_itime = 0;
 199                         }
 200                 }
 201                 for (; argc-- > 0; argv++) {
 202                         if (strspn(*argv, "0123456789-") == strlen(*argv) &&
 203                             (cp = strchr(*argv, '-')) != NULL) {
 204                                 *cp++ = '\0';
 205                                 startuid = atoi(*argv);
 206                                 enduid = atoi(cp);
 207                                 if (enduid < startuid)
 208                                         errx(1,
 209         "ending uid (%d) must be >= starting uid (%d) when using uid ranges",
 210                                                 enduid, startuid);
 211                                 range = 1;
 212                         } else {
 213                                 startuid = enduid = 0;
 214                                 range = 0;
 215                         }
 216                         for ( ; startuid <= enduid; startuid++) {
 217                                 if (range)
 218                                         snprintf(buf, sizeof(buf), "%d",
 219                                             startuid);
 220                                 else
 221                                         snprintf(buf, sizeof(buf), "%s",
 222                                                 *argv);
 223                                 if ((id = getentry(buf, quotatype)) < 0)
 224                                         continue;
 225                                 if (eflag) {
 226                                         for (qup = protoprivs; qup;
 227                                             qup = qup->next) {
 228                                                 curprivs = getprivs(id,
 229                                                     quotatype, qup->fsname);
 230                                                 if (curprivs == NULL)
 231                                                         continue;
 232                                                 strcpy(qup->qfname,
 233                                                     curprivs->qfname);
 234                                                 strcpy(qup->fsname,
 235                                                     curprivs->fsname);
 236                                         }
 237                                 }
 238                                 putprivs(id, quotatype, protoprivs);
 239                         }
 240                 }
 241                 exit(0);
 242         }
 243         tmpfd = mkstemp(tmpfil);
 244         fchown(tmpfd, getuid(), getgid());
 245         if (tflag) {
 246                 protoprivs = getprivs(0, quotatype, fspath);
 247                 if (writetimes(protoprivs, tmpfd, quotatype) == 0)
 248                         exit(1);
 249                 if (editit(tmpfil) && readtimes(protoprivs, tmpfil))
 250                         putprivs(0, quotatype, protoprivs);
 251                 freeprivs(protoprivs);
 252                 close(tmpfd);
 253                 unlink(tmpfil);
 254                 exit(0);
 255         }
 256         for ( ; argc > 0; argc--, argv++) {
 257                 if ((id = getentry(*argv, quotatype)) == -1)
 258                         continue;
 259                 curprivs = getprivs(id, quotatype, fspath);
 260                 if (writeprivs(curprivs, tmpfd, *argv, quotatype) == 0)
 261                         continue;
 262                 if (editit(tmpfil) && readprivs(curprivs, tmpfil))
 263                         putprivs(id, quotatype, curprivs);
 264                 freeprivs(curprivs);
 265         }
 266         close(tmpfd);
 267         unlink(tmpfil);
 268         exit(0);
 269 }
 270
 271 static void
 272 usage(void)
 273 {
 274         fprintf(stderr, "%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n",
 275                 "usage: edquota [-u] [-f fspath] [-p username] username ...",
 276                 "       edquota [-u] -e fspath[:bslim[:bhlim[:islim[:ihlim]]]] [-e ...]",
 277                 "               username ...",
 278                 "       edquota -g [-f fspath] [-p groupname] groupname ...",
 279                 "       edquota -g -e fspath[:bslim[:bhlim[:islim[:ihlim]]]] [-e ...]",
 280                 "               groupname ...",
 281                 "       edquota [-u] -t [-f fspath]",
 282                 "       edquota -g -t [-f fspath]");
 283         exit(1);
 284 }
 285
 286 /*
 287  * This routine converts a name for a particular quota type to
 288  * an identifier. This routine must agree with the kernel routine
 289  * getinoquota as to the interpretation of quota types.
 290  */
 291 int
 292 getentry(const char *name, int quotatype)
 293 {
 294         struct passwd *pw;
 295         struct group *gr;
 296
 297         if (alldigits(name))
 298                 return (atoi(name));
 299         switch(quotatype) {
 300         case USRQUOTA:
 301                 if ((pw = getpwnam(name)))
 302                         return (pw->pw_uid);
 303                 warnx("%s: no such user", name);
 304                 break;
 305         case GRPQUOTA:
 306                 if ((gr = getgrnam(name)))
 307                         return (gr->gr_gid);
 308                 warnx("%s: no such group", name);
 309                 break;
 310         default:
 311                 warnx("%d: unknown quota type", quotatype);
 312                 break;
 313         }
 314         sleep(1);
 315         return (-1);
 316 }
 317
 318 /*
 319  * Collect the requested quota information.
 320  */
 321 struct quotause *
 322 getprivs(long id, int quotatype, char *fspath)
 323 {
 324         struct fstab *fs;
 325         struct quotause *qup, *quptail;
 326         struct quotause *quphead;
 327         int qcmd, qupsize, fd;
 328         char *qfpathname;
 329         static int warned = 0;
 330
 331         setfsent();
 332         quphead = NULL;
 333         qcmd = QCMD(Q_GETQUOTA, quotatype);
 334         while ((fs = getfsent())) {
 335                 if (fspath && *fspath && strcmp(fspath, fs->fs_spec) &&
 336                     strcmp(fspath, fs->fs_file))
 337                         continue;
 338                 if (strcmp(fs->fs_vfstype, "ufs"))
 339                         continue;
 340                 if (!hasquota(fs, quotatype, &qfpathname))
 341                         continue;
 342                 qupsize = sizeof(*qup) + strlen(qfpathname);
 343                 if ((qup = (struct quotause *)malloc(qupsize)) == NULL)
 344                         errx(2, "out of memory");
 345                 if (quotactl(fs->fs_file, qcmd, id, &qup->dqblk) != 0) {
 346                         if (errno == EOPNOTSUPP && !warned) {
 347                                 warned++;
 348                 warnx("warning: quotas are not compiled into this kernel");
 349                                 sleep(3);
 350                         }
 351                         if ((fd = open(qfpathname, O_RDONLY)) < 0) {
 352                                 fd = open(qfpathname, O_RDWR|O_CREAT, 0640);
 353                                 if (fd < 0 && errno != ENOENT) {
 354                                         warn("%s", qfpathname);
 355                                         free(qup);
 356                                         continue;
 357                                 }
 358                                 warnx("creating quota file %s", qfpathname);
 359                                 sleep(3);
 360                                 fchown(fd, getuid(),
 361                                     getentry(quotagroup, GRPQUOTA));
 362                                 fchmod(fd, 0640);
 363                         }
 364                         lseek(fd, (long)(id * sizeof(struct ufs_dqblk)), L_SET);
 365                         switch (read(fd, &qup->dqblk, sizeof(struct ufs_dqblk))) {
 366                         case 0:                 /* EOF */
 367                                 /*
 368                                  * Convert implicit 0 quota (EOF)
 369                                  * into an explicit one (zero'ed dqblk)
 370                                  */
 371                                 bzero((caddr_t)&qup->dqblk,
 372                                     sizeof(struct ufs_dqblk));
 373                                 break;
 374
 375                         case sizeof(struct ufs_dqblk):  /* OK */
 376                                 break;
 377
 378                         default:                /* ERROR */
 379                                 warn("read error in %s", qfpathname);
 380                                 close(fd);
 381                                 free(qup);
 382                                 continue;
 383                         }
 384                         close(fd);
 385                 }
 386                 strcpy(qup->qfname, qfpathname);
 387                 strcpy(qup->fsname, fs->fs_file);
 388                 if (quphead == NULL)
 389                         quphead = qup;
 390                 else
 391                         quptail->next = qup;
 392                 quptail = qup;
 393                 qup->next = 0;
 394         }
 395         endfsent();
 396         return (quphead);
 397 }
 398
 399 /*
 400  * Store the requested quota information.
 401  */
 402 void
 403 putprivs(long id, int quotatype, struct quotause *quplist)
 404 {
 405         struct quotause *qup;
 406         int qcmd, fd;
 407
 408         qcmd = QCMD(Q_SETQUOTA, quotatype);
 409         for (qup = quplist; qup; qup = qup->next) {
 410                 if (quotactl(qup->fsname, qcmd, id, &qup->dqblk) == 0)
 411                         continue;
 412                 if ((fd = open(qup->qfname, O_WRONLY)) < 0) {
 413                         warn("%s", qup->qfname);
 414                 } else {
 415                         lseek(fd, (long)id * (long)sizeof(struct ufs_dqblk), 0);
 416                         if (write(fd, &qup->dqblk, sizeof(struct ufs_dqblk)) !=
 417                             sizeof(struct ufs_dqblk)) {
 418                                 warn("%s", qup->qfname);
 419                         }
 420                         close(fd);
 421                 }
 422         }
 423 }
 424
 425 /*
 426  * Take a list of priviledges and get it edited.
 427  */
 428 int
 429 editit(char *tmpf)
 430 {
 431         long omask;
 432         int pid, status;
 433
 434         omask = sigblock(sigmask(SIGINT)|sigmask(SIGQUIT)|sigmask(SIGHUP));
 435  top:
 436         if ((pid = fork()) < 0) {
 437
 438                 if (errno == EPROCLIM) {
 439                         warnx("you have too many processes");
 440                         return(0);
 441                 }
 442                 if (errno == EAGAIN) {
 443                         sleep(1);
 444                         goto top;
 445                 }
 446                 warn("fork");
 447                 return (0);
 448         }
 449         if (pid == 0) {
 450                 const char *ed;
 451
 452                 sigsetmask(omask);
 453                 setgid(getgid());
 454                 setuid(getuid());
 455                 if ((ed = getenv("EDITOR")) == NULL)
 456                         ed = _PATH_VI;
 457                 execlp(ed, ed, tmpf, NULL);
 458                 err(1, "%s", ed);
 459         }
 460         waitpid(pid, &status, 0);
 461         sigsetmask(omask);
 462         if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
 463                 return (0);
 464         return (1);
 465 }
 466
 467 /*
 468  * Convert a quotause list to an ASCII file.
 469  */
 470 int
 471 writeprivs(struct quotause *quplist, int outfd, char *name, int quotatype)
 472 {
 473         struct quotause *qup;
 474         FILE *fd;
 475
 476         ftruncate(outfd, 0);
 477         lseek(outfd, 0, L_SET);
 478         if ((fd = fdopen(dup(outfd), "w")) == NULL)
 479                 err(1, "%s", tmpfil);
 480         fprintf(fd, "Quotas for %s %s:\n", qfextension[quotatype], name);
 481         for (qup = quplist; qup; qup = qup->next) {
 482                 fprintf(fd, "%s: %s %lu, limits (soft = %lu, hard = %lu)\n",
 483                     qup->fsname, "kbytes in use:",
 484                     (unsigned long)(dbtob(qup->dqblk.dqb_curblocks) / 1024),
 485                     (unsigned long)(dbtob(qup->dqblk.dqb_bsoftlimit) / 1024),
 486                     (unsigned long)(dbtob(qup->dqblk.dqb_bhardlimit) / 1024));
 487                 fprintf(fd, "%s %lu, limits (soft = %lu, hard = %lu)\n",
 488                     "\tinodes in use:",
 489                     (unsigned long)qup->dqblk.dqb_curinodes,
 490                     (unsigned long)qup->dqblk.dqb_isoftlimit,
 491                     (unsigned long)qup->dqblk.dqb_ihardlimit);
 492         }
 493         fclose(fd);
 494         return (1);
 495 }
 496
 497 /*
 498  * Merge changes to an ASCII file into a quotause list.
 499  */
 500 int
 501 readprivs(struct quotause *quplist, char *inname)
 502 {
 503         struct quotause *qup;
 504         FILE *fd;
 505         unsigned long bhardlimit, bsoftlimit, curblocks;
 506         unsigned long ihardlimit, isoftlimit, curinodes;
 507         int cnt;
 508         char *cp;
 509         struct ufs_dqblk dqblk;
 510         char *fsp, line1[BUFSIZ], line2[BUFSIZ];
 511
 512         fd = fopen(inname, "r");
 513         if (fd == NULL) {
 514                 warnx("can't re-read temp file!!");
 515                 return (0);
 516         }
 517         /*
 518          * Discard title line, then read pairs of lines to process.
 519          */
 520         fgets(line1, sizeof(line1), fd);
 521         while (fgets(line1, sizeof(line1), fd) != NULL &&
 522                fgets(line2, sizeof(line2), fd) != NULL) {
 523                 if ((fsp = strtok(line1, " \t:")) == NULL) {
 524                         warnx("%s: bad format", line1);
 525                         return (0);
 526                 }
 527                 if ((cp = strtok(NULL, "\n")) == NULL) {
 528                         warnx("%s: %s: bad format", fsp, &fsp[strlen(fsp) + 1]);
 529                         return (0);
 530                 }
 531                 cnt = sscanf(cp,
 532                     " kbytes in use: %lu, limits (soft = %lu, hard = %lu)",
 533                     &curblocks, &bsoftlimit, &bhardlimit);
 534                 if (cnt != 3) {
 535                         warnx("%s:%s: bad format", fsp, cp);
 536                         return (0);
 537                 }
 538                 dqblk.dqb_curblocks = btodb((off_t)curblocks * 1024);
 539                 dqblk.dqb_bsoftlimit = btodb((off_t)bsoftlimit * 1024);
 540                 dqblk.dqb_bhardlimit = btodb((off_t)bhardlimit * 1024);
 541                 if ((cp = strtok(line2, "\n")) == NULL) {
 542                         warnx("%s: %s: bad format", fsp, line2);
 543                         return (0);
 544                 }
 545                 cnt = sscanf(cp,
 546                     "\tinodes in use: %lu, limits (soft = %lu, hard = %lu)",
 547                     &curinodes, &isoftlimit, &ihardlimit);
 548                 if (cnt != 3) {
 549                         warnx("%s: %s: bad format", fsp, line2);
 550                         return (0);
 551                 }
 552                 dqblk.dqb_curinodes = curinodes;
 553                 dqblk.dqb_isoftlimit = isoftlimit;
 554                 dqblk.dqb_ihardlimit = ihardlimit;
 555                 for (qup = quplist; qup; qup = qup->next) {
 556                         if (strcmp(fsp, qup->fsname))
 557                                 continue;
 558                         /*
 559                          * Cause time limit to be reset when the quota
 560                          * is next used if previously had no soft limit
 561                          * or were under it, but now have a soft limit
 562                          * and are over it.
 563                          */
 564                         if (dqblk.dqb_bsoftlimit &&
 565                             qup->dqblk.dqb_curblocks >= dqblk.dqb_bsoftlimit &&
 566                             (qup->dqblk.dqb_bsoftlimit == 0 ||
 567                              qup->dqblk.dqb_curblocks <
 568                              qup->dqblk.dqb_bsoftlimit))
 569                                 qup->dqblk.dqb_btime = 0;
 570                         if (dqblk.dqb_isoftlimit &&
 571                             qup->dqblk.dqb_curinodes >= dqblk.dqb_isoftlimit &&
 572                             (qup->dqblk.dqb_isoftlimit == 0 ||
 573                              qup->dqblk.dqb_curinodes <
 574                              qup->dqblk.dqb_isoftlimit))
 575                                 qup->dqblk.dqb_itime = 0;
 576                         qup->dqblk.dqb_bsoftlimit = dqblk.dqb_bsoftlimit;
 577                         qup->dqblk.dqb_bhardlimit = dqblk.dqb_bhardlimit;
 578                         qup->dqblk.dqb_isoftlimit = dqblk.dqb_isoftlimit;
 579                         qup->dqblk.dqb_ihardlimit = dqblk.dqb_ihardlimit;
 580                         qup->flags |= FOUND;
 581                         if (dqblk.dqb_curblocks == qup->dqblk.dqb_curblocks &&
 582                             dqblk.dqb_curinodes == qup->dqblk.dqb_curinodes)
 583                                 break;
 584                         warnx("%s: cannot change current allocation", fsp);
 585                         break;
 586                 }
 587         }
 588         fclose(fd);
 589         /*
 590          * Disable quotas for any filesystems that have not been found.
 591          */
 592         for (qup = quplist; qup; qup = qup->next) {
 593                 if (qup->flags & FOUND) {
 594                         qup->flags &= ~FOUND;
 595                         continue;
 596                 }
 597                 qup->dqblk.dqb_bsoftlimit = 0;
 598                 qup->dqblk.dqb_bhardlimit = 0;
 599                 qup->dqblk.dqb_isoftlimit = 0;
 600                 qup->dqblk.dqb_ihardlimit = 0;
 601         }
 602         return (1);
 603 }
 604
 605 /*
 606  * Convert a quotause list to an ASCII file of grace times.
 607  */
 608 int
 609 writetimes(struct quotause *quplist, int outfd, int quotatype)
 610 {
 611         struct quotause *qup;
 612         FILE *fd;
 613
 614         ftruncate(outfd, 0);
 615         lseek(outfd, 0, L_SET);
 616         if ((fd = fdopen(dup(outfd), "w")) == NULL)
 617                 err(1, "%s", tmpfil);
 618         fprintf(fd, "Time units may be: days, hours, minutes, or seconds\n");
 619         fprintf(fd, "Grace period before enforcing soft limits for %ss:\n",
 620             qfextension[quotatype]);
 621         for (qup = quplist; qup; qup = qup->next) {
 622                 fprintf(fd, "%s: block grace period: %s, ",
 623                     qup->fsname, cvtstoa(qup->dqblk.dqb_btime));
 624                 fprintf(fd, "file grace period: %s\n",
 625                     cvtstoa(qup->dqblk.dqb_itime));
 626         }
 627         fclose(fd);
 628         return (1);
 629 }
 630
 631 /*
 632  * Merge changes of grace times in an ASCII file into a quotause list.
 633  */
 634 int
 635 readtimes(struct quotause *quplist, char *inname)
 636 {
 637         struct quotause *qup;
 638         FILE *fd;
 639         int cnt;
 640         char *cp;
 641         time_t itime, btime, iseconds, bseconds;
 642         long l_itime, l_btime;
 643         char *fsp, bunits[10], iunits[10], line1[BUFSIZ];
 644
 645         fd = fopen(inname, "r");
 646         if (fd == NULL) {
 647                 warnx("can't re-read temp file!!");
 648                 return (0);
 649         }
 650         /*
 651          * Discard two title lines, then read lines to process.
 652          */
 653         fgets(line1, sizeof(line1), fd);
 654         fgets(line1, sizeof(line1), fd);
 655         while (fgets(line1, sizeof(line1), fd) != NULL) {
 656                 if ((fsp = strtok(line1, " \t:")) == NULL) {
 657                         warnx("%s: bad format", line1);
 658                         return (0);
 659                 }
 660                 if ((cp = strtok(NULL, "\n")) == NULL) {
 661                         warnx("%s: %s: bad format", fsp, &fsp[strlen(fsp) + 1]);
 662                         return (0);
 663                 }
 664                 cnt = sscanf(cp,
 665                     " block grace period: %ld %s file grace period: %ld %s",
 666                     &l_btime, bunits, &l_itime, iunits);
 667                 if (cnt != 4) {
 668                         warnx("%s:%s: bad format", fsp, cp);
 669                         return (0);
 670                 }
 671                 btime = l_btime;
 672                 itime = l_itime;
 673                 if (cvtatos(btime, bunits, &bseconds) == 0)
 674                         return (0);
 675                 if (cvtatos(itime, iunits, &iseconds) == 0)
 676                         return (0);
 677                 for (qup = quplist; qup; qup = qup->next) {
 678                         if (strcmp(fsp, qup->fsname))
 679                                 continue;
 680                         qup->dqblk.dqb_btime = bseconds;
 681                         qup->dqblk.dqb_itime = iseconds;
 682                         qup->flags |= FOUND;
 683                         break;
 684                 }
 685         }
 686         fclose(fd);
 687         /*
 688          * reset default grace periods for any filesystems
 689          * that have not been found.
 690          */
 691         for (qup = quplist; qup; qup = qup->next) {
 692                 if (qup->flags & FOUND) {
 693                         qup->flags &= ~FOUND;
 694                         continue;
 695                 }
 696                 qup->dqblk.dqb_btime = 0;
 697                 qup->dqblk.dqb_itime = 0;
 698         }
 699         return (1);
 700 }
 701
 702 /*
 703  * Convert seconds to ASCII times.
 704  */
 705 char *
 706 cvtstoa(time_t secs)
 707 {
 708         static char buf[20];
 709
 710         if (secs % (24 * 60 * 60) == 0) {
 711                 secs /= 24 * 60 * 60;
 712                 sprintf(buf, "%ld day%s", (long)secs, secs == 1 ? "" : "s");
 713         } else if (secs % (60 * 60) == 0) {
 714                 secs /= 60 * 60;
 715                 sprintf(buf, "%ld hour%s", (long)secs, secs == 1 ? "" : "s");
 716         } else if (secs % 60 == 0) {
 717                 secs /= 60;
 718                 sprintf(buf, "%ld minute%s", (long)secs, secs == 1 ? "" : "s");
 719         } else
 720                 sprintf(buf, "%ld second%s", (long)secs, secs == 1 ? "" : "s");
 721         return (buf);
 722 }
 723
 724 /*
 725  * Convert ASCII input times to seconds.
 726  */
 727 int
 728 cvtatos(time_t period, char *units, time_t *seconds)
 729 {
 730
 731         if (bcmp(units, "second", 6) == 0)
 732                 *seconds = period;
 733         else if (bcmp(units, "minute", 6) == 0)
 734                 *seconds = period * 60;
 735         else if (bcmp(units, "hour", 4) == 0)
 736                 *seconds = period * 60 * 60;
 737         else if (bcmp(units, "day", 3) == 0)
 738                 *seconds = period * 24 * 60 * 60;
 739         else {
 740                 printf("%s: bad units, specify %s\n", units,
 741                     "days, hours, minutes, or seconds");
 742                 return (0);
 743         }
 744         return (1);
 745 }
 746
 747 /*
 748  * Free a list of quotause structures.
 749  */
 750 void
 751 freeprivs(struct quotause *quplist)
 752 {
 753         struct quotause *qup, *nextqup;
 754
 755         for (qup = quplist; qup; qup = nextqup) {
 756                 nextqup = qup->next;
 757                 free(qup);
 758         }
 759 }
 760
 761 /*
 762  * Check whether a string is completely composed of digits.
 763  */
 764 int
 765 alldigits(const char *s)
 766 {
 767         int c;
 768
 769         c = *s++;
 770         do {
 771                 if (!isdigit(c))
 772                         return (0);
 773         } while ((c = *s++));
 774         return (1);
 775 }
 776
 777 /*
 778  * Check to see if a particular quota is to be enabled.
 779  */
 780 int
 781 hasquota(struct fstab *fs, int type, char **qfnamep)
 782 {
 783         char *opt;
 784         char *cp;
 785         static char initname, usrname[100], grpname[100];
 786         static char buf[BUFSIZ];
 787
 788         if (!initname) {
 789                 sprintf(usrname, "%s%s", qfextension[USRQUOTA], qfname);
 790                 sprintf(grpname, "%s%s", qfextension[GRPQUOTA], qfname);
 791                 initname = 1;
 792         }
 793         strcpy(buf, fs->fs_mntops);
 794         for (opt = strtok(buf, ","); opt; opt = strtok(NULL, ",")) {
 795                 if ((cp = strchr(opt, '=')))
 796                         *cp++ = '\0';
 797                 if (type == USRQUOTA && strcmp(opt, usrname) == 0)
 798                         break;
 799                 if (type == GRPQUOTA && strcmp(opt, grpname) == 0)
 800                         break;
 801         }
 802         if (!opt)
 803                 return (0);
 804         if (cp) {
 805                 *qfnamep = cp;
 806                 return (1);
 807         }
 808         sprintf(buf, "%s/%s.%s", fs->fs_file, qfname, qfextension[type]);
 809         *qfnamep = buf;
 810         return (1);
 811 }