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. 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  * @(#) Copyright (c) 1980, 1990, 1993 The Regents of the University of California.  All rights reserved.
  33  * @(#)edquota.c        8.1 (Berkeley) 6/6/93
  34  * $FreeBSD: src/usr.sbin/edquota/edquota.c,v 1.9.2.6 2002/10/31 22:38:43 iedowse Exp $
  35  */
  36
  37 /*
  38  * Disk quota editor.
  39  */
  40 #include <sys/param.h>
  41 #include <sys/stat.h>
  42 #include <sys/file.h>
  43 #include <sys/wait.h>
  44 #include <vfs/ufs/quota.h>
  45 #include <ctype.h>
  46 #include <err.h>
  47 #include <errno.h>
  48 #include <fstab.h>
  49 #include <grp.h>
  50 #include <pwd.h>
  51 #include <signal.h>
  52 #include <stdio.h>
  53 #include <stdlib.h>
  54 #include <string.h>
  55 #include <unistd.h>
  56 #include "pathnames.h"
  57
  58 const char *qfname = QUOTAFILENAME;
  59 const char *qfextension[] = INITQFNAMES;
  60 const char *quotagroup = QUOTAGROUP;
  61 char tmpfil[] = _PATH_TMP;
  62
  63 struct quotause {
  64         struct  quotause *next;
  65         long    flags;
  66         struct  ufs_dqblk dqblk;
  67         char    fsname[MAXPATHLEN + 1];
  68         char    qfname[1];      /* actually longer */
  69 };
  70 #define FOUND   0x01
  71
  72 int alldigits(const char *s);
  73 int cvtatos(time_t, char *, time_t *);
  74 char *cvtstoa(time_t);
  75 int editit(char *);
  76 void freeprivs(struct quotause *);
  77 int getentry(const char *, int);
  78 struct quotause *getprivs(long, int, char *);
  79 int hasquota(struct fstab *, int, char **);
  80 void putprivs(long, int, struct quotause *);
  81 int readprivs(struct quotause *, char *);
  82 int readtimes(struct quotause *, char *);
  83 static void usage(void);
  84 int writetimes(struct quotause *, int, int);
  85 int writeprivs(struct quotause *, int, char *, int);
  86
  87 int
  88 main(int argc, char **argv)
  89 {
  90         struct quotause *qup, *protoprivs, *curprivs;
  91         long id, protoid;
  92         long long lim;
  93         int i, quotatype, range, tmpfd;
  94         uid_t startuid, enduid;
  95         u_int32_t *limp;
  96         char *protoname, *cp, *oldoptarg, ch;
  97         int eflag = 0, tflag = 0, pflag = 0;
  98         char *fspath = NULL;
  99         char buf[MAXLOGNAME];
 100
 101         if (argc < 2)
 102                 usage();
 103         if (getuid())
 104                 errx(1, "permission denied");
 105         quotatype = USRQUOTA;
 106         protoprivs = NULL;
 107         curprivs = NULL;
 108         protoname = NULL;
 109         while ((ch = getopt(argc, argv, "ugtf:p:e:")) != -1) {
 110                 switch(ch) {
 111                 case 'f':
 112                         fspath = optarg;
 113                         break;
 114                 case 'p':
 115                         protoname = optarg;
 116                         pflag++;
 117                         break;
 118                 case 'g':
 119                         quotatype = GRPQUOTA;
 120                         break;
 121                 case 'u':
 122                         quotatype = USRQUOTA;
 123                         break;
 124                 case 't':
 125                         tflag++;
 126                         break;
 127                 case 'e':
 128                         if ((qup = malloc(sizeof(*qup))) == NULL)
 129                                 errx(2, "out of memory");
 130                         bzero(qup, sizeof(*qup));
 131                         i = 0;
 132                         oldoptarg = optarg;
 133                         for (cp = optarg; (cp = strsep(&optarg, ":")) != NULL;
 134                             i++) {
 135                                 if (cp != oldoptarg)
 136                                         *(cp - 1) = ':';
 137                                 limp = NULL;
 138                                 switch (i) {
 139                                 case 0:
 140                                         strlcpy(qup->fsname, cp,
 141                                             sizeof(qup->fsname));
 142                                         break;
 143                                 case 1:
 144                                         limp = &qup->dqblk.dqb_bsoftlimit;
 145                                         break;
 146                                 case 2:
 147                                         limp = &qup->dqblk.dqb_bhardlimit;
 148                                         break;
 149                                 case 3:
 150                                         limp = &qup->dqblk.dqb_isoftlimit;
 151                                         break;
 152                                 case 4:
 153                                         limp = &qup->dqblk.dqb_ihardlimit;
 154                                         break;
 155                                 default:
 156                                         warnx("incorrect quota specification: "
 157                                             "%s", oldoptarg);
 158                                         usage();
 159                                         break; /* XXX: report an error */
 160                                 }
 161                                 if (limp != NULL) {
 162                                         lim = strtoll(cp, NULL, 10);
 163                                         if (lim < 0 || lim > UINT_MAX)
 164                                                 errx(1, "invalid limit value: "
 165                                                     "%lld", lim);
 166                                         *limp = (u_int32_t)lim;
 167                                 }
 168                         }
 169                         qup->dqblk.dqb_bsoftlimit =
 170                             btodb((off_t)qup->dqblk.dqb_bsoftlimit * 1024);
 171                         qup->dqblk.dqb_bhardlimit =
 172                             btodb((off_t)qup->dqblk.dqb_bhardlimit * 1024);
 173                         if (protoprivs == NULL) {
 174                                 protoprivs = curprivs = qup;
 175                         } else {
 176                                 curprivs->next = qup;
 177                                 curprivs = qup;
 178                         }
 179                         eflag++;
 180                         pflag++;
 181                         break;
 182                 default:
 183                         usage();
 184                 }
 185         }
 186         argc -= optind;
 187         argv += optind;
 188         if (pflag) {
 189                 if (protoprivs == NULL) {
 190                         if ((protoid = getentry(protoname, quotatype)) == -1)
 191                                 exit(1);
 192                         protoprivs = getprivs(protoid, quotatype, fspath);
 193                         for (qup = protoprivs; qup; qup = qup->next) {
 194                                 qup->dqblk.dqb_btime = 0;
 195                                 qup->dqblk.dqb_itime = 0;
 196                         }
 197                 }
 198                 for (; argc-- > 0; argv++) {
 199                         if (strspn(*argv, "0123456789-") == strlen(*argv) &&
 200                             (cp = strchr(*argv, '-')) != NULL) {
 201                                 *cp++ = '\0';
 202                                 startuid = atoi(*argv);
 203                                 enduid = atoi(cp);
 204                                 if (enduid < startuid)
 205                                         errx(1,
 206         "ending uid (%d) must be >= starting uid (%d) when using uid ranges",
 207                                                 enduid, startuid);
 208                                 range = 1;
 209                         } else {
 210                                 startuid = enduid = 0;
 211                                 range = 0;
 212                         }
 213                         for ( ; startuid <= enduid; startuid++) {
 214                                 if (range)
 215                                         snprintf(buf, sizeof(buf), "%d",
 216                                             startuid);
 217                                 else
 218                                         snprintf(buf, sizeof(buf), "%s",
 219                                                 *argv);
 220                                 if ((id = getentry(buf, quotatype)) < 0)
 221                                         continue;
 222                                 if (eflag) {
 223                                         for (qup = protoprivs; qup;
 224                                             qup = qup->next) {
 225                                                 curprivs = getprivs(id,
 226                                                     quotatype, qup->fsname);
 227                                                 if (curprivs == NULL)
 228                                                         continue;
 229                                                 strcpy(qup->qfname,
 230                                                     curprivs->qfname);
 231                                                 strcpy(qup->fsname,
 232                                                     curprivs->fsname);
 233                                         }
 234                                 }
 235                                 putprivs(id, quotatype, protoprivs);
 236                         }
 237                 }
 238                 exit(0);
 239         }
 240         tmpfd = mkstemp(tmpfil);
 241         fchown(tmpfd, getuid(), getgid());
 242         if (tflag) {
 243                 protoprivs = getprivs(0, quotatype, fspath);
 244                 if (writetimes(protoprivs, tmpfd, quotatype) == 0)
 245                         exit(1);
 246                 if (editit(tmpfil) && readtimes(protoprivs, tmpfil))
 247                         putprivs(0, quotatype, protoprivs);
 248                 freeprivs(protoprivs);
 249                 close(tmpfd);
 250                 unlink(tmpfil);
 251                 exit(0);
 252         }
 253         for ( ; argc > 0; argc--, argv++) {
 254                 if ((id = getentry(*argv, quotatype)) == -1)
 255                         continue;
 256                 curprivs = getprivs(id, quotatype, fspath);
 257                 if (writeprivs(curprivs, tmpfd, *argv, quotatype) == 0)
 258                         continue;
 259                 if (editit(tmpfil) && readprivs(curprivs, tmpfil))
 260                         putprivs(id, quotatype, curprivs);
 261                 freeprivs(curprivs);
 262         }
 263         close(tmpfd);
 264         unlink(tmpfil);
 265         exit(0);
 266 }
 267
 268 static void
 269 usage(void)
 270 {
 271         fprintf(stderr, "%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n",
 272                 "usage: edquota [-u] [-f fspath] [-p username] username ...",
 273                 "       edquota [-u] -e fspath[:bslim[:bhlim[:islim[:ihlim]]]] [-e ...]",
 274                 "               username ...",
 275                 "       edquota -g [-f fspath] [-p groupname] groupname ...",
 276                 "       edquota -g -e fspath[:bslim[:bhlim[:islim[:ihlim]]]] [-e ...]",
 277                 "               groupname ...",
 278                 "       edquota [-u] -t [-f fspath]",
 279                 "       edquota -g -t [-f fspath]");
 280         exit(1);
 281 }
 282
 283 /*
 284  * This routine converts a name for a particular quota type to
 285  * an identifier. This routine must agree with the kernel routine
 286  * getinoquota as to the interpretation of quota types.
 287  */
 288 int
 289 getentry(const char *name, int quotatype)
 290 {
 291         struct passwd *pw;
 292         struct group *gr;
 293
 294         if (alldigits(name))
 295                 return (atoi(name));
 296         switch(quotatype) {
 297         case USRQUOTA:
 298                 if ((pw = getpwnam(name)))
 299                         return (pw->pw_uid);
 300                 warnx("%s: no such user", name);
 301                 break;
 302         case GRPQUOTA:
 303                 if ((gr = getgrnam(name)))
 304                         return (gr->gr_gid);
 305                 warnx("%s: no such group", name);
 306                 break;
 307         default:
 308                 warnx("%d: unknown quota type", quotatype);
 309                 break;
 310         }
 311         sleep(1);
 312         return (-1);
 313 }
 314
 315 /*
 316  * Collect the requested quota information.
 317  */
 318 struct quotause *
 319 getprivs(long id, int quotatype, char *fspath)
 320 {
 321         struct fstab *fs;
 322         struct quotause *qup, *quptail;
 323         struct quotause *quphead;
 324         int qcmd, qupsize, fd;
 325         char *qfpathname;
 326         static int warned = 0;
 327
 328         setfsent();
 329         quphead = quptail = NULL;
 330         qcmd = QCMD(Q_GETQUOTA, quotatype);
 331         while ((fs = getfsent())) {
 332                 if (fspath && *fspath && strcmp(fspath, fs->fs_spec) &&
 333                     strcmp(fspath, fs->fs_file))
 334                         continue;
 335                 if (strcmp(fs->fs_vfstype, "ufs"))
 336                         continue;
 337                 if (!hasquota(fs, quotatype, &qfpathname))
 338                         continue;
 339                 qupsize = sizeof(*qup) + strlen(qfpathname);
 340                 if ((qup = (struct quotause *)malloc(qupsize)) == NULL)
 341                         errx(2, "out of memory");
 342                 if (quotactl(fs->fs_file, qcmd, id, &qup->dqblk) != 0) {
 343                         if (errno == EOPNOTSUPP && !warned) {
 344                                 warned++;
 345                 warnx("warning: quotas are not compiled into this kernel");
 346                                 sleep(3);
 347                         }
 348                         if ((fd = open(qfpathname, O_RDONLY)) < 0) {
 349                                 fd = open(qfpathname, O_RDWR|O_CREAT, 0640);
 350                                 if (fd < 0 && errno != ENOENT) {
 351                                         warn("%s", qfpathname);
 352                                         free(qup);
 353                                         continue;
 354                                 }
 355                                 warnx("creating quota file %s", qfpathname);
 356                                 sleep(3);
 357                                 fchown(fd, getuid(),
 358                                     getentry(quotagroup, GRPQUOTA));
 359                                 fchmod(fd, 0640);
 360                         }
 361                         lseek(fd, (long)(id * sizeof(struct ufs_dqblk)), L_SET);
 362                         switch (read(fd, &qup->dqblk, sizeof(struct ufs_dqblk))) {
 363                         case 0:                 /* EOF */
 364                                 /*
 365                                  * Convert implicit 0 quota (EOF)
 366                                  * into an explicit one (zero'ed dqblk)
 367                                  */
 368                                 bzero((caddr_t)&qup->dqblk,
 369                                     sizeof(struct ufs_dqblk));
 370                                 break;
 371
 372                         case sizeof(struct ufs_dqblk):  /* OK */
 373                                 break;
 374
 375                         default:                /* ERROR */
 376                                 warn("read error in %s", qfpathname);
 377                                 close(fd);
 378                                 free(qup);
 379                                 continue;
 380                         }
 381                         close(fd);
 382                 }
 383                 strcpy(qup->qfname, qfpathname);
 384                 strcpy(qup->fsname, fs->fs_file);
 385                 if (quphead == NULL)
 386                         quphead = qup;
 387                 else
 388                         quptail->next = qup;
 389                 quptail = qup;
 390                 qup->next = NULL;
 391         }
 392         endfsent();
 393         return (quphead);
 394 }
 395
 396 /*
 397  * Store the requested quota information.
 398  */
 399 void
 400 putprivs(long id, int quotatype, struct quotause *quplist)
 401 {
 402         struct quotause *qup;
 403         int qcmd, fd;
 404
 405         qcmd = QCMD(Q_SETQUOTA, quotatype);
 406         for (qup = quplist; qup; qup = qup->next) {
 407                 if (quotactl(qup->fsname, qcmd, id, &qup->dqblk) == 0)
 408                         continue;
 409                 if ((fd = open(qup->qfname, O_WRONLY)) < 0) {
 410                         warn("%s", qup->qfname);
 411                 } else {
 412                         lseek(fd, (long)id * (long)sizeof(struct ufs_dqblk), 0);
 413                         if (write(fd, &qup->dqblk, sizeof(struct ufs_dqblk)) !=
 414                             sizeof(struct ufs_dqblk)) {
 415                                 warn("%s", qup->qfname);
 416                         }
 417                         close(fd);
 418                 }
 419         }
 420 }
 421
 422 /*
 423  * Take a list of priviledges and get it edited.
 424  */
 425 int
 426 editit(char *tmpf)
 427 {
 428         long omask;
 429         int pid, status;
 430
 431         omask = sigblock(sigmask(SIGINT)|sigmask(SIGQUIT)|sigmask(SIGHUP));
 432  top:
 433         if ((pid = fork()) < 0) {
 434
 435                 if (errno == EPROCLIM) {
 436                         warnx("you have too many processes");
 437                         return(0);
 438                 }
 439                 if (errno == EAGAIN) {
 440                         sleep(1);
 441                         goto top;
 442                 }
 443                 warn("fork");
 444                 return (0);
 445         }
 446         if (pid == 0) {
 447                 const char *ed;
 448
 449                 sigsetmask(omask);
 450                 setgid(getgid());
 451                 setuid(getuid());
 452                 if ((ed = getenv("EDITOR")) == NULL)
 453                         ed = _PATH_VI;
 454                 execlp(ed, ed, tmpf, NULL);
 455                 err(1, "%s", ed);
 456         }
 457         waitpid(pid, &status, 0);
 458         sigsetmask(omask);
 459         if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
 460                 return (0);
 461         return (1);
 462 }
 463
 464 /*
 465  * Convert a quotause list to an ASCII file.
 466  */
 467 int
 468 writeprivs(struct quotause *quplist, int outfd, char *name, int quotatype)
 469 {
 470         struct quotause *qup;
 471         FILE *fd;
 472
 473         ftruncate(outfd, 0);
 474         lseek(outfd, 0, L_SET);
 475         if ((fd = fdopen(dup(outfd), "w")) == NULL)
 476                 err(1, "%s", tmpfil);
 477         fprintf(fd, "Quotas for %s %s:\n", qfextension[quotatype], name);
 478         for (qup = quplist; qup; qup = qup->next) {
 479                 fprintf(fd, "%s: %s %lu, limits (soft = %lu, hard = %lu)\n",
 480                     qup->fsname, "kbytes in use:",
 481                     (unsigned long)(dbtob(qup->dqblk.dqb_curblocks) / 1024),
 482                     (unsigned long)(dbtob(qup->dqblk.dqb_bsoftlimit) / 1024),
 483                     (unsigned long)(dbtob(qup->dqblk.dqb_bhardlimit) / 1024));
 484                 fprintf(fd, "%s %lu, limits (soft = %lu, hard = %lu)\n",
 485                     "\tinodes in use:",
 486                     (unsigned long)qup->dqblk.dqb_curinodes,
 487                     (unsigned long)qup->dqblk.dqb_isoftlimit,
 488                     (unsigned long)qup->dqblk.dqb_ihardlimit);
 489         }
 490         fclose(fd);
 491         return (1);
 492 }
 493
 494 /*
 495  * Merge changes to an ASCII file into a quotause list.
 496  */
 497 int
 498 readprivs(struct quotause *quplist, char *inname)
 499 {
 500         struct quotause *qup;
 501         FILE *fd;
 502         unsigned long bhardlimit, bsoftlimit, curblocks;
 503         unsigned long ihardlimit, isoftlimit, curinodes;
 504         int cnt;
 505         char *cp;
 506         struct ufs_dqblk dqblk;
 507         char *fsp, line1[BUFSIZ], line2[BUFSIZ];
 508
 509         fd = fopen(inname, "r");
 510         if (fd == NULL) {
 511                 warnx("can't re-read temp file!!");
 512                 return (0);
 513         }
 514         /*
 515          * Discard title line, then read pairs of lines to process.
 516          */
 517         fgets(line1, sizeof(line1), fd);
 518         while (fgets(line1, sizeof(line1), fd) != NULL &&
 519                fgets(line2, sizeof(line2), fd) != NULL) {
 520                 if ((fsp = strtok(line1, " \t:")) == NULL) {
 521                         warnx("%s: bad format", line1);
 522                         return (0);
 523                 }
 524                 if ((cp = strtok(NULL, "\n")) == NULL) {
 525                         warnx("%s: %s: bad format", fsp, &fsp[strlen(fsp) + 1]);
 526                         return (0);
 527                 }
 528                 cnt = sscanf(cp,
 529                     " kbytes in use: %lu, limits (soft = %lu, hard = %lu)",
 530                     &curblocks, &bsoftlimit, &bhardlimit);
 531                 if (cnt != 3) {
 532                         warnx("%s:%s: bad format", fsp, cp);
 533                         return (0);
 534                 }
 535                 dqblk.dqb_curblocks = btodb((off_t)curblocks * 1024);
 536                 dqblk.dqb_bsoftlimit = btodb((off_t)bsoftlimit * 1024);
 537                 dqblk.dqb_bhardlimit = btodb((off_t)bhardlimit * 1024);
 538                 if ((cp = strtok(line2, "\n")) == NULL) {
 539                         warnx("%s: %s: bad format", fsp, line2);
 540                         return (0);
 541                 }
 542                 cnt = sscanf(cp,
 543                     "\tinodes in use: %lu, limits (soft = %lu, hard = %lu)",
 544                     &curinodes, &isoftlimit, &ihardlimit);
 545                 if (cnt != 3) {
 546                         warnx("%s: %s: bad format", fsp, line2);
 547                         return (0);
 548                 }
 549                 dqblk.dqb_curinodes = curinodes;
 550                 dqblk.dqb_isoftlimit = isoftlimit;
 551                 dqblk.dqb_ihardlimit = ihardlimit;
 552                 for (qup = quplist; qup; qup = qup->next) {
 553                         if (strcmp(fsp, qup->fsname))
 554                                 continue;
 555                         /*
 556                          * Cause time limit to be reset when the quota
 557                          * is next used if previously had no soft limit
 558                          * or were under it, but now have a soft limit
 559                          * and are over it.
 560                          */
 561                         if (dqblk.dqb_bsoftlimit &&
 562                             qup->dqblk.dqb_curblocks >= dqblk.dqb_bsoftlimit &&
 563                             (qup->dqblk.dqb_bsoftlimit == 0 ||
 564                              qup->dqblk.dqb_curblocks <
 565                              qup->dqblk.dqb_bsoftlimit))
 566                                 qup->dqblk.dqb_btime = 0;
 567                         if (dqblk.dqb_isoftlimit &&
 568                             qup->dqblk.dqb_curinodes >= dqblk.dqb_isoftlimit &&
 569                             (qup->dqblk.dqb_isoftlimit == 0 ||
 570                              qup->dqblk.dqb_curinodes <
 571                              qup->dqblk.dqb_isoftlimit))
 572                                 qup->dqblk.dqb_itime = 0;
 573                         qup->dqblk.dqb_bsoftlimit = dqblk.dqb_bsoftlimit;
 574                         qup->dqblk.dqb_bhardlimit = dqblk.dqb_bhardlimit;
 575                         qup->dqblk.dqb_isoftlimit = dqblk.dqb_isoftlimit;
 576                         qup->dqblk.dqb_ihardlimit = dqblk.dqb_ihardlimit;
 577                         qup->flags |= FOUND;
 578                         if (dqblk.dqb_curblocks == qup->dqblk.dqb_curblocks &&
 579                             dqblk.dqb_curinodes == qup->dqblk.dqb_curinodes)
 580                                 break;
 581                         warnx("%s: cannot change current allocation", fsp);
 582                         break;
 583                 }
 584         }
 585         fclose(fd);
 586         /*
 587          * Disable quotas for any filesystems that have not been found.
 588          */
 589         for (qup = quplist; qup; qup = qup->next) {
 590                 if (qup->flags & FOUND) {
 591                         qup->flags &= ~FOUND;
 592                         continue;
 593                 }
 594                 qup->dqblk.dqb_bsoftlimit = 0;
 595                 qup->dqblk.dqb_bhardlimit = 0;
 596                 qup->dqblk.dqb_isoftlimit = 0;
 597                 qup->dqblk.dqb_ihardlimit = 0;
 598         }
 599         return (1);
 600 }
 601
 602 /*
 603  * Convert a quotause list to an ASCII file of grace times.
 604  */
 605 int
 606 writetimes(struct quotause *quplist, int outfd, int quotatype)
 607 {
 608         struct quotause *qup;
 609         FILE *fd;
 610
 611         ftruncate(outfd, 0);
 612         lseek(outfd, 0, L_SET);
 613         if ((fd = fdopen(dup(outfd), "w")) == NULL)
 614                 err(1, "%s", tmpfil);
 615         fprintf(fd, "Time units may be: days, hours, minutes, or seconds\n");
 616         fprintf(fd, "Grace period before enforcing soft limits for %ss:\n",
 617             qfextension[quotatype]);
 618         for (qup = quplist; qup; qup = qup->next) {
 619                 fprintf(fd, "%s: block grace period: %s, ",
 620                     qup->fsname, cvtstoa(qup->dqblk.dqb_btime));
 621                 fprintf(fd, "file grace period: %s\n",
 622                     cvtstoa(qup->dqblk.dqb_itime));
 623         }
 624         fclose(fd);
 625         return (1);
 626 }
 627
 628 /*
 629  * Merge changes of grace times in an ASCII file into a quotause list.
 630  */
 631 int
 632 readtimes(struct quotause *quplist, char *inname)
 633 {
 634         struct quotause *qup;
 635         FILE *fd;
 636         int cnt;
 637         char *cp;
 638         time_t itime, btime, iseconds, bseconds;
 639         long l_itime, l_btime;
 640         char *fsp, bunits[10], iunits[10], line1[BUFSIZ];
 641
 642         fd = fopen(inname, "r");
 643         if (fd == NULL) {
 644                 warnx("can't re-read temp file!!");
 645                 return (0);
 646         }
 647         /*
 648          * Discard two title lines, then read lines to process.
 649          */
 650         fgets(line1, sizeof(line1), fd);
 651         fgets(line1, sizeof(line1), fd);
 652         while (fgets(line1, sizeof(line1), fd) != NULL) {
 653                 if ((fsp = strtok(line1, " \t:")) == NULL) {
 654                         warnx("%s: bad format", line1);
 655                         return (0);
 656                 }
 657                 if ((cp = strtok(NULL, "\n")) == NULL) {
 658                         warnx("%s: %s: bad format", fsp, &fsp[strlen(fsp) + 1]);
 659                         return (0);
 660                 }
 661                 cnt = sscanf(cp,
 662                     " block grace period: %ld %s file grace period: %ld %s",
 663                     &l_btime, bunits, &l_itime, iunits);
 664                 if (cnt != 4) {
 665                         warnx("%s:%s: bad format", fsp, cp);
 666                         return (0);
 667                 }
 668                 btime = l_btime;
 669                 itime = l_itime;
 670                 if (cvtatos(btime, bunits, &bseconds) == 0)
 671                         return (0);
 672                 if (cvtatos(itime, iunits, &iseconds) == 0)
 673                         return (0);
 674                 for (qup = quplist; qup; qup = qup->next) {
 675                         if (strcmp(fsp, qup->fsname))
 676                                 continue;
 677                         qup->dqblk.dqb_btime = bseconds;
 678                         qup->dqblk.dqb_itime = iseconds;
 679                         qup->flags |= FOUND;
 680                         break;
 681                 }
 682         }
 683         fclose(fd);
 684         /*
 685          * reset default grace periods for any filesystems
 686          * that have not been found.
 687          */
 688         for (qup = quplist; qup; qup = qup->next) {
 689                 if (qup->flags & FOUND) {
 690                         qup->flags &= ~FOUND;
 691                         continue;
 692                 }
 693                 qup->dqblk.dqb_btime = 0;
 694                 qup->dqblk.dqb_itime = 0;
 695         }
 696         return (1);
 697 }
 698
 699 /*
 700  * Convert seconds to ASCII times.
 701  */
 702 char *
 703 cvtstoa(time_t secs)
 704 {
 705         static char buf[20];
 706
 707         if (secs % (24 * 60 * 60) == 0) {
 708                 secs /= 24 * 60 * 60;
 709                 sprintf(buf, "%ld day%s", (long)secs, secs == 1 ? "" : "s");
 710         } else if (secs % (60 * 60) == 0) {
 711                 secs /= 60 * 60;
 712                 sprintf(buf, "%ld hour%s", (long)secs, secs == 1 ? "" : "s");
 713         } else if (secs % 60 == 0) {
 714                 secs /= 60;
 715                 sprintf(buf, "%ld minute%s", (long)secs, secs == 1 ? "" : "s");
 716         } else
 717                 sprintf(buf, "%ld second%s", (long)secs, secs == 1 ? "" : "s");
 718         return (buf);
 719 }
 720
 721 /*
 722  * Convert ASCII input times to seconds.
 723  */
 724 int
 725 cvtatos(time_t period, char *units, time_t *seconds)
 726 {
 727
 728         if (bcmp(units, "second", 6) == 0)
 729                 *seconds = period;
 730         else if (bcmp(units, "minute", 6) == 0)
 731                 *seconds = period * 60;
 732         else if (bcmp(units, "hour", 4) == 0)
 733                 *seconds = period * 60 * 60;
 734         else if (bcmp(units, "day", 3) == 0)
 735                 *seconds = period * 24 * 60 * 60;
 736         else {
 737                 printf("%s: bad units, specify %s\n", units,
 738                     "days, hours, minutes, or seconds");
 739                 return (0);
 740         }
 741         return (1);
 742 }
 743
 744 /*
 745  * Free a list of quotause structures.
 746  */
 747 void
 748 freeprivs(struct quotause *quplist)
 749 {
 750         struct quotause *qup, *nextqup;
 751
 752         for (qup = quplist; qup; qup = nextqup) {
 753                 nextqup = qup->next;
 754                 free(qup);
 755         }
 756 }
 757
 758 /*
 759  * Check whether a string is completely composed of digits.
 760  */
 761 int
 762 alldigits(const char *s)
 763 {
 764         int c;
 765
 766         c = *s++;
 767         do {
 768                 if (!isdigit(c))
 769                         return (0);
 770         } while ((c = *s++));
 771         return (1);
 772 }
 773
 774 /*
 775  * Check to see if a particular quota is to be enabled.
 776  */
 777 int
 778 hasquota(struct fstab *fs, int type, char **qfnamep)
 779 {
 780         char *opt;
 781         char *cp;
 782         static char initname, usrname[100], grpname[100];
 783         static char buf[BUFSIZ];
 784
 785         if (!initname) {
 786                 sprintf(usrname, "%s%s", qfextension[USRQUOTA], qfname);
 787                 sprintf(grpname, "%s%s", qfextension[GRPQUOTA], qfname);
 788                 initname = 1;
 789         }
 790         strcpy(buf, fs->fs_mntops);
 791         for (opt = strtok(buf, ","); opt; opt = strtok(NULL, ",")) {
 792                 if ((cp = strchr(opt, '=')))
 793                         *cp++ = '\0';
 794                 if (type == USRQUOTA && strcmp(opt, usrname) == 0)
 795                         break;
 796                 if (type == GRPQUOTA && strcmp(opt, grpname) == 0)
 797                         break;
 798         }
 799         if (!opt)
 800                 return (0);
 801         if (cp) {
 802                 *qfnamep = cp;
 803                 return (1);
 804         }
 805         sprintf(buf, "%s/%s.%s", fs->fs_file, qfname, qfextension[type]);
 806         *qfnamep = buf;
 807         return (1);
 808 }