usr.sbin/edquota/edquota.c

   1 /*
   2  * Copyright (c) 1980, 1990, 1993
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * This code is derived from software contributed to Berkeley by
   6  * Robert Elz at The University of Melbourne.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  * 3. All advertising materials mentioning features or use of this software
  17  *    must display the following acknowledgement:
  18  *      This product includes software developed by the University of
  19  *      California, Berkeley and its contributors.
  20  * 4. Neither the name of the University nor the names of its contributors
  21  *    may be used to endorse or promote products derived from this software
  22  *    without specific prior written permission.
  23  *
  24  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  25  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  26  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  27  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  28  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  29  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  30  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  31  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  32  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  33  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  34  * SUCH DAMAGE.
  35  */
  36
  37 #ifndef lint
  38 static const char copyright[] =
  39 "@(#) Copyright (c) 1980, 1990, 1993\n\
  40         The Regents of the University of California.  All rights reserved.\n";
  41 #endif /* not lint */
  42
  43 #ifndef lint
  44 #if 0
  45 static char sccsid[] = "@(#)edquota.c   8.1 (Berkeley) 6/6/93";
  46 #endif
  47 static const char rcsid[] =
  48   "$FreeBSD: src/usr.sbin/edquota/edquota.c,v 1.9.2.6 2002/10/31 22:38:43 iedowse Exp $";
  49 #endif /* not lint */
  50
  51 /*
  52  * Disk quota editor.
  53  */
  54 #include <sys/param.h>
  55 #include <sys/stat.h>
  56 #include <sys/file.h>
  57 #include <sys/wait.h>
  58 #include <ufs/ufs/quota.h>
  59 #include <ctype.h>
  60 #include <err.h>
  61 #include <errno.h>
  62 #include <fstab.h>
  63 #include <grp.h>
  64 #include <pwd.h>
  65 #include <signal.h>
  66 #include <stdio.h>
  67 #include <stdlib.h>
  68 #include <string.h>
  69 #include <unistd.h>
  70 #include "pathnames.h"
  71
  72 const char *qfname = QUOTAFILENAME;
  73 const char *qfextension[] = INITQFNAMES;
  74 const char *quotagroup = QUOTAGROUP;
  75 char tmpfil[] = _PATH_TMP;
  76
  77 struct quotause {
  78         struct  quotause *next;
  79         long    flags;
  80         struct  dqblk dqblk;
  81         char    fsname[MAXPATHLEN + 1];
  82         char    qfname[1];      /* actually longer */
  83 };
  84 #define FOUND   0x01
  85
  86 int alldigits(const char *s);
  87 int cvtatos(time_t, char *, time_t *);
  88 char *cvtstoa(time_t);
  89 int editit(char *);
  90 void freeprivs(struct quotause *);
  91 int getentry(const char *, int);
  92 struct quotause *getprivs(long, int, char *);
  93 int hasquota(struct fstab *, int, char **);
  94 void putprivs(long, int, struct quotause *);
  95 int readprivs(struct quotause *, char *);
  96 int readtimes(struct quotause *, char *);
  97 static void usage(void);
  98 int writetimes(struct quotause *, int, int);
  99 int writeprivs(struct quotause *, int, char *, int);
 100
 101 int
 102 main(int argc, char **argv)
 103 {
 104         struct quotause *qup, *protoprivs, *curprivs;
 105         long id, protoid;
 106         long long lim;
 107         int i, quotatype, range, tmpfd;
 108         uid_t startuid, enduid;
 109         u_int32_t *limp;
 110         char *protoname, *cp, *oldoptarg, ch;
 111         int eflag = 0, tflag = 0, pflag = 0;
 112         char *fspath = NULL;
 113         char buf[30];
 114
 115         if (argc < 2)
 116                 usage();
 117         if (getuid())
 118                 errx(1, "permission denied");
 119         quotatype = USRQUOTA;
 120         protoprivs = NULL;
 121         while ((ch = getopt(argc, argv, "ugtf:p:e:")) != -1) {
 122                 switch(ch) {
 123                 case 'f':
 124                         fspath = optarg;
 125                         break;
 126                 case 'p':
 127                         protoname = optarg;
 128                         pflag++;
 129                         break;
 130                 case 'g':
 131                         quotatype = GRPQUOTA;
 132                         break;
 133                 case 'u':
 134                         quotatype = USRQUOTA;
 135                         break;
 136                 case 't':
 137                         tflag++;
 138                         break;
 139                 case 'e':
 140                         if ((qup = malloc(sizeof(*qup))) == NULL)
 141                                 errx(2, "out of memory");
 142                         bzero(qup, sizeof(*qup));
 143                         i = 0;
 144                         oldoptarg = optarg;
 145                         for (cp = optarg; (cp = strsep(&optarg, ":")) != NULL;
 146                             i++) {
 147                                 if (cp != oldoptarg)
 148                                         *(cp - 1) = ':';
 149                                 limp = NULL;
 150                                 switch (i) {
 151                                 case 0:
 152                                         strlcpy(qup->fsname, cp,
 153                                             sizeof(qup->fsname));
 154                                         break;
 155                                 case 1:
 156                                         limp = &qup->dqblk.dqb_bsoftlimit;
 157                                         break;
 158                                 case 2:
 159                                         limp = &qup->dqblk.dqb_bhardlimit;
 160                                         break;
 161                                 case 3:
 162                                         limp = &qup->dqblk.dqb_isoftlimit;
 163                                         break;
 164                                 case 4:
 165                                         limp = &qup->dqblk.dqb_ihardlimit;
 166                                         break;
 167                                 default:
 168                                         warnx("incorrect quota specification: "
 169                                             "%s", oldoptarg);
 170                                         usage();
 171                                         break; /* XXX: report an error */
 172                                 }
 173                                 if (limp != NULL) {
 174                                         lim = strtoll(cp, NULL, 10);
 175                                         if (lim < 0 || lim > UINT_MAX)
 176                                                 errx(1, "invalid limit value: "
 177                                                     "%lld", lim);
 178                                         *limp = (u_int32_t)lim;
 179                                 }
 180                         }
 181                         qup->dqblk.dqb_bsoftlimit =
 182                             btodb((off_t)qup->dqblk.dqb_bsoftlimit * 1024);
 183                         qup->dqblk.dqb_bhardlimit =
 184                             btodb((off_t)qup->dqblk.dqb_bhardlimit * 1024);
 185                         if (protoprivs == NULL) {
 186                                 protoprivs = curprivs = qup;
 187                         } else {
 188                                 curprivs->next = qup;
 189                                 curprivs = qup;
 190                         }
 191                         eflag++;
 192                         pflag++;
 193                         break;
 194                 default:
 195                         usage();
 196                 }
 197         }
 198         argc -= optind;
 199         argv += optind;
 200         if (pflag) {
 201                 if (protoprivs == NULL) {
 202                         if ((protoid = getentry(protoname, quotatype)) == -1)
 203                                 exit(1);
 204                         protoprivs = getprivs(protoid, quotatype, fspath);
 205                         for (qup = protoprivs; qup; qup = qup->next) {
 206                                 qup->dqblk.dqb_btime = 0;
 207                                 qup->dqblk.dqb_itime = 0;
 208                         }
 209                 }
 210                 for (; argc-- > 0; argv++) {
 211                         if (strspn(*argv, "0123456789-") == strlen(*argv) &&
 212                             (cp = strchr(*argv, '-')) != NULL) {
 213                                 *cp++ = '\0';
 214                                 startuid = atoi(*argv);
 215                                 enduid = atoi(cp);
 216                                 if (enduid < startuid)
 217                                         errx(1,
 218         "ending uid (%d) must be >= starting uid (%d) when using uid ranges",
 219                                                 enduid, startuid);
 220                                 range = 1;
 221                         } else {
 222                                 startuid = enduid = 0;
 223                                 range = 0;
 224                         }
 225                         for ( ; startuid <= enduid; startuid++) {
 226                                 if (range)
 227                                         snprintf(buf, sizeof(buf), "%d",
 228                                             startuid);
 229                                 else
 230                                         snprintf(buf, sizeof(buf), "%s",
 231                                                 *argv);
 232                                 if ((id = getentry(buf, quotatype)) < 0)
 233                                         continue;
 234                                 if (eflag) {
 235                                         for (qup = protoprivs; qup;
 236                                             qup = qup->next) {
 237                                                 curprivs = getprivs(id,
 238                                                     quotatype, qup->fsname);
 239                                                 if (curprivs == NULL)
 240                                                         continue;
 241                                                 strcpy(qup->qfname,
 242                                                     curprivs->qfname);
 243                                                 strcpy(qup->fsname,
 244                                                     curprivs->fsname);
 245                                         }
 246                                 }
 247                                 putprivs(id, quotatype, protoprivs);
 248                         }
 249                 }
 250                 exit(0);
 251         }
 252         tmpfd = mkstemp(tmpfil);
 253         fchown(tmpfd, getuid(), getgid());
 254         if (tflag) {
 255                 protoprivs = getprivs(0, quotatype, fspath);
 256                 if (writetimes(protoprivs, tmpfd, quotatype) == 0)
 257                         exit(1);
 258                 if (editit(tmpfil) && readtimes(protoprivs, tmpfil))
 259                         putprivs(0, quotatype, protoprivs);
 260                 freeprivs(protoprivs);
 261                 close(tmpfd);
 262                 unlink(tmpfil);
 263                 exit(0);
 264         }
 265         for ( ; argc > 0; argc--, argv++) {
 266                 if ((id = getentry(*argv, quotatype)) == -1)
 267                         continue;
 268                 curprivs = getprivs(id, quotatype, fspath);
 269                 if (writeprivs(curprivs, tmpfd, *argv, quotatype) == 0)
 270                         continue;
 271                 if (editit(tmpfil) && readprivs(curprivs, tmpfil))
 272                         putprivs(id, quotatype, curprivs);
 273                 freeprivs(curprivs);
 274         }
 275         close(tmpfd);
 276         unlink(tmpfil);
 277         exit(0);
 278 }
 279
 280 static void
 281 usage()
 282 {
 283         fprintf(stderr, "%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n",
 284                 "usage: edquota [-u] [-f fspath] [-p username] username ...",
 285                 "       edquota [-u] -e fspath[:bslim[:bhlim[:islim[:ihlim]]]] [-e ...]",
 286                 "               username ...",
 287                 "       edquota -g [-f fspath] [-p groupname] groupname ...",
 288                 "       edquota -g -e fspath[:bslim[:bhlim[:islim[:ihlim]]]] [-e ...]",
 289                 "               groupname ...",
 290                 "       edquota [-u] -t [-f fspath]",
 291                 "       edquota -g -t [-f fspath]");
 292         exit(1);
 293 }
 294
 295 /*
 296  * This routine converts a name for a particular quota type to
 297  * an identifier. This routine must agree with the kernel routine
 298  * getinoquota as to the interpretation of quota types.
 299  */
 300 int
 301 getentry(name, quotatype)
 302         const char *name;
 303         int quotatype;
 304 {
 305         struct passwd *pw;
 306         struct group *gr;
 307
 308         if (alldigits(name))
 309                 return (atoi(name));
 310         switch(quotatype) {
 311         case USRQUOTA:
 312                 if ((pw = getpwnam(name)))
 313                         return (pw->pw_uid);
 314                 warnx("%s: no such user", name);
 315                 break;
 316         case GRPQUOTA:
 317                 if ((gr = getgrnam(name)))
 318                         return (gr->gr_gid);
 319                 warnx("%s: no such group", name);
 320                 break;
 321         default:
 322                 warnx("%d: unknown quota type", quotatype);
 323                 break;
 324         }
 325         sleep(1);
 326         return (-1);
 327 }
 328
 329 /*
 330  * Collect the requested quota information.
 331  */
 332 struct quotause *
 333 getprivs(id, quotatype, fspath)
 334         register long id;
 335         int quotatype;
 336         char *fspath;
 337 {
 338         register struct fstab *fs;
 339         register struct quotause *qup, *quptail;
 340         struct quotause *quphead;
 341         int qcmd, qupsize, fd;
 342         char *qfpathname;
 343         static int warned = 0;
 344
 345         setfsent();
 346         quphead = (struct quotause *)0;
 347         qcmd = QCMD(Q_GETQUOTA, quotatype);
 348         while ((fs = getfsent())) {
 349                 if (fspath && *fspath && strcmp(fspath, fs->fs_spec) &&
 350                     strcmp(fspath, fs->fs_file))
 351                         continue;
 352                 if (strcmp(fs->fs_vfstype, "ufs"))
 353                         continue;
 354                 if (!hasquota(fs, quotatype, &qfpathname))
 355                         continue;
 356                 qupsize = sizeof(*qup) + strlen(qfpathname);
 357                 if ((qup = (struct quotause *)malloc(qupsize)) == NULL)
 358                         errx(2, "out of memory");
 359                 if (quotactl(fs->fs_file, qcmd, id, &qup->dqblk) != 0) {
 360                         if (errno == EOPNOTSUPP && !warned) {
 361                                 warned++;
 362                 warnx("warning: quotas are not compiled into this kernel");
 363                                 sleep(3);
 364                         }
 365                         if ((fd = open(qfpathname, O_RDONLY)) < 0) {
 366                                 fd = open(qfpathname, O_RDWR|O_CREAT, 0640);
 367                                 if (fd < 0 && errno != ENOENT) {
 368                                         warn("%s", qfpathname);
 369                                         free(qup);
 370                                         continue;
 371                                 }
 372                                 warnx("creating quota file %s", qfpathname);
 373                                 sleep(3);
 374                                 (void) fchown(fd, getuid(),
 375                                     getentry(quotagroup, GRPQUOTA));
 376                                 (void) fchmod(fd, 0640);
 377                         }
 378                         lseek(fd, (long)(id * sizeof(struct dqblk)), L_SET);
 379                         switch (read(fd, &qup->dqblk, sizeof(struct dqblk))) {
 380                         case 0:                 /* EOF */
 381                                 /*
 382                                  * Convert implicit 0 quota (EOF)
 383                                  * into an explicit one (zero'ed dqblk)
 384                                  */
 385                                 bzero((caddr_t)&qup->dqblk,
 386                                     sizeof(struct dqblk));
 387                                 break;
 388
 389                         case sizeof(struct dqblk):      /* OK */
 390                                 break;
 391
 392                         default:                /* ERROR */
 393                                 warn("read error in %s", qfpathname);
 394                                 close(fd);
 395                                 free(qup);
 396                                 continue;
 397                         }
 398                         close(fd);
 399                 }
 400                 strcpy(qup->qfname, qfpathname);
 401                 strcpy(qup->fsname, fs->fs_file);
 402                 if (quphead == NULL)
 403                         quphead = qup;
 404                 else
 405                         quptail->next = qup;
 406                 quptail = qup;
 407                 qup->next = 0;
 408         }
 409         endfsent();
 410         return (quphead);
 411 }
 412
 413 /*
 414  * Store the requested quota information.
 415  */
 416 void
 417 putprivs(id, quotatype, quplist)
 418         long id;
 419         int quotatype;
 420         struct quotause *quplist;
 421 {
 422         register struct quotause *qup;
 423         int qcmd, fd;
 424
 425         qcmd = QCMD(Q_SETQUOTA, quotatype);
 426         for (qup = quplist; qup; qup = qup->next) {
 427                 if (quotactl(qup->fsname, qcmd, id, &qup->dqblk) == 0)
 428                         continue;
 429                 if ((fd = open(qup->qfname, O_WRONLY)) < 0) {
 430                         warn("%s", qup->qfname);
 431                 } else {
 432                         lseek(fd, (long)id * (long)sizeof (struct dqblk), 0);
 433                         if (write(fd, &qup->dqblk, sizeof (struct dqblk)) !=
 434                             sizeof (struct dqblk)) {
 435                                 warn("%s", qup->qfname);
 436                         }
 437                         close(fd);
 438                 }
 439         }
 440 }
 441
 442 /*
 443  * Take a list of priviledges and get it edited.
 444  */
 445 int
 446 editit(tmpf)
 447         char *tmpf;
 448 {
 449         long omask;
 450         int pid, status;
 451
 452         omask = sigblock(sigmask(SIGINT)|sigmask(SIGQUIT)|sigmask(SIGHUP));
 453  top:
 454         if ((pid = fork()) < 0) {
 455
 456                 if (errno == EPROCLIM) {
 457                         warnx("you have too many processes");
 458                         return(0);
 459                 }
 460                 if (errno == EAGAIN) {
 461                         sleep(1);
 462                         goto top;
 463                 }
 464                 warn("fork");
 465                 return (0);
 466         }
 467         if (pid == 0) {
 468                 register const char *ed;
 469
 470                 sigsetmask(omask);
 471                 setgid(getgid());
 472                 setuid(getuid());
 473                 if ((ed = getenv("EDITOR")) == (char *)0)
 474                         ed = _PATH_VI;
 475                 execlp(ed, ed, tmpf, (char *)0);
 476                 err(1, "%s", ed);
 477         }
 478         waitpid(pid, &status, 0);
 479         sigsetmask(omask);
 480         if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
 481                 return (0);
 482         return (1);
 483 }
 484
 485 /*
 486  * Convert a quotause list to an ASCII file.
 487  */
 488 int
 489 writeprivs(quplist, outfd, name, quotatype)
 490         struct quotause *quplist;
 491         int outfd;
 492         char *name;
 493         int quotatype;
 494 {
 495         register struct quotause *qup;
 496         FILE *fd;
 497
 498         ftruncate(outfd, 0);
 499         lseek(outfd, 0, L_SET);
 500         if ((fd = fdopen(dup(outfd), "w")) == NULL)
 501                 err(1, "%s", tmpfil);
 502         fprintf(fd, "Quotas for %s %s:\n", qfextension[quotatype], name);
 503         for (qup = quplist; qup; qup = qup->next) {
 504                 fprintf(fd, "%s: %s %lu, limits (soft = %lu, hard = %lu)\n",
 505                     qup->fsname, "kbytes in use:",
 506                     (unsigned long)(dbtob(qup->dqblk.dqb_curblocks) / 1024),
 507                     (unsigned long)(dbtob(qup->dqblk.dqb_bsoftlimit) / 1024),
 508                     (unsigned long)(dbtob(qup->dqblk.dqb_bhardlimit) / 1024));
 509                 fprintf(fd, "%s %lu, limits (soft = %lu, hard = %lu)\n",
 510                     "\tinodes in use:",
 511                     (unsigned long)qup->dqblk.dqb_curinodes,
 512                     (unsigned long)qup->dqblk.dqb_isoftlimit,
 513                     (unsigned long)qup->dqblk.dqb_ihardlimit);
 514         }
 515         fclose(fd);
 516         return (1);
 517 }
 518
 519 /*
 520  * Merge changes to an ASCII file into a quotause list.
 521  */
 522 int
 523 readprivs(quplist, inname)
 524         struct quotause *quplist;
 525         char *inname;
 526 {
 527         register struct quotause *qup;
 528         FILE *fd;
 529         unsigned long bhardlimit, bsoftlimit, curblocks;
 530         unsigned long ihardlimit, isoftlimit, curinodes;
 531         int cnt;
 532         register char *cp;
 533         struct dqblk dqblk;
 534         char *fsp, line1[BUFSIZ], line2[BUFSIZ];
 535
 536         fd = fopen(inname, "r");
 537         if (fd == NULL) {
 538                 warnx("can't re-read temp file!!");
 539                 return (0);
 540         }
 541         /*
 542          * Discard title line, then read pairs of lines to process.
 543          */
 544         (void) fgets(line1, sizeof (line1), fd);
 545         while (fgets(line1, sizeof (line1), fd) != NULL &&
 546                fgets(line2, sizeof (line2), fd) != NULL) {
 547                 if ((fsp = strtok(line1, " \t:")) == NULL) {
 548                         warnx("%s: bad format", line1);
 549                         return (0);
 550                 }
 551                 if ((cp = strtok((char *)0, "\n")) == NULL) {
 552                         warnx("%s: %s: bad format", fsp, &fsp[strlen(fsp) + 1]);
 553                         return (0);
 554                 }
 555                 cnt = sscanf(cp,
 556                     " kbytes in use: %lu, limits (soft = %lu, hard = %lu)",
 557                     &curblocks, &bsoftlimit, &bhardlimit);
 558                 if (cnt != 3) {
 559                         warnx("%s:%s: bad format", fsp, cp);
 560                         return (0);
 561                 }
 562                 dqblk.dqb_curblocks = btodb((off_t)curblocks * 1024);
 563                 dqblk.dqb_bsoftlimit = btodb((off_t)bsoftlimit * 1024);
 564                 dqblk.dqb_bhardlimit = btodb((off_t)bhardlimit * 1024);
 565                 if ((cp = strtok(line2, "\n")) == NULL) {
 566                         warnx("%s: %s: bad format", fsp, line2);
 567                         return (0);
 568                 }
 569                 cnt = sscanf(cp,
 570                     "\tinodes in use: %lu, limits (soft = %lu, hard = %lu)",
 571                     &curinodes, &isoftlimit, &ihardlimit);
 572                 if (cnt != 3) {
 573                         warnx("%s: %s: bad format", fsp, line2);
 574                         return (0);
 575                 }
 576                 dqblk.dqb_curinodes = curinodes;
 577                 dqblk.dqb_isoftlimit = isoftlimit;
 578                 dqblk.dqb_ihardlimit = ihardlimit;
 579                 for (qup = quplist; qup; qup = qup->next) {
 580                         if (strcmp(fsp, qup->fsname))
 581                                 continue;
 582                         /*
 583                          * Cause time limit to be reset when the quota
 584                          * is next used if previously had no soft limit
 585                          * or were under it, but now have a soft limit
 586                          * and are over it.
 587                          */
 588                         if (dqblk.dqb_bsoftlimit &&
 589                             qup->dqblk.dqb_curblocks >= dqblk.dqb_bsoftlimit &&
 590                             (qup->dqblk.dqb_bsoftlimit == 0 ||
 591                              qup->dqblk.dqb_curblocks <
 592                              qup->dqblk.dqb_bsoftlimit))
 593                                 qup->dqblk.dqb_btime = 0;
 594                         if (dqblk.dqb_isoftlimit &&
 595                             qup->dqblk.dqb_curinodes >= dqblk.dqb_isoftlimit &&
 596                             (qup->dqblk.dqb_isoftlimit == 0 ||
 597                              qup->dqblk.dqb_curinodes <
 598                              qup->dqblk.dqb_isoftlimit))
 599                                 qup->dqblk.dqb_itime = 0;
 600                         qup->dqblk.dqb_bsoftlimit = dqblk.dqb_bsoftlimit;
 601                         qup->dqblk.dqb_bhardlimit = dqblk.dqb_bhardlimit;
 602                         qup->dqblk.dqb_isoftlimit = dqblk.dqb_isoftlimit;
 603                         qup->dqblk.dqb_ihardlimit = dqblk.dqb_ihardlimit;
 604                         qup->flags |= FOUND;
 605                         if (dqblk.dqb_curblocks == qup->dqblk.dqb_curblocks &&
 606                             dqblk.dqb_curinodes == qup->dqblk.dqb_curinodes)
 607                                 break;
 608                         warnx("%s: cannot change current allocation", fsp);
 609                         break;
 610                 }
 611         }
 612         fclose(fd);
 613         /*
 614          * Disable quotas for any filesystems that have not been found.
 615          */
 616         for (qup = quplist; qup; qup = qup->next) {
 617                 if (qup->flags & FOUND) {
 618                         qup->flags &= ~FOUND;
 619                         continue;
 620                 }
 621                 qup->dqblk.dqb_bsoftlimit = 0;
 622                 qup->dqblk.dqb_bhardlimit = 0;
 623                 qup->dqblk.dqb_isoftlimit = 0;
 624                 qup->dqblk.dqb_ihardlimit = 0;
 625         }
 626         return (1);
 627 }
 628
 629 /*
 630  * Convert a quotause list to an ASCII file of grace times.
 631  */
 632 int
 633 writetimes(quplist, outfd, quotatype)
 634         struct quotause *quplist;
 635         int outfd;
 636         int quotatype;
 637 {
 638         register struct quotause *qup;
 639         FILE *fd;
 640
 641         ftruncate(outfd, 0);
 642         lseek(outfd, 0, L_SET);
 643         if ((fd = fdopen(dup(outfd), "w")) == NULL)
 644                 err(1, "%s", tmpfil);
 645         fprintf(fd, "Time units may be: days, hours, minutes, or seconds\n");
 646         fprintf(fd, "Grace period before enforcing soft limits for %ss:\n",
 647             qfextension[quotatype]);
 648         for (qup = quplist; qup; qup = qup->next) {
 649                 fprintf(fd, "%s: block grace period: %s, ",
 650                     qup->fsname, cvtstoa(qup->dqblk.dqb_btime));
 651                 fprintf(fd, "file grace period: %s\n",
 652                     cvtstoa(qup->dqblk.dqb_itime));
 653         }
 654         fclose(fd);
 655         return (1);
 656 }
 657
 658 /*
 659  * Merge changes of grace times in an ASCII file into a quotause list.
 660  */
 661 int
 662 readtimes(quplist, inname)
 663         struct quotause *quplist;
 664         char *inname;
 665 {
 666         register struct quotause *qup;
 667         FILE *fd;
 668         int cnt;
 669         register char *cp;
 670         time_t itime, btime, iseconds, bseconds;
 671         long l_itime, l_btime;
 672         char *fsp, bunits[10], iunits[10], line1[BUFSIZ];
 673
 674         fd = fopen(inname, "r");
 675         if (fd == NULL) {
 676                 warnx("can't re-read temp file!!");
 677                 return (0);
 678         }
 679         /*
 680          * Discard two title lines, then read lines to process.
 681          */
 682         (void) fgets(line1, sizeof (line1), fd);
 683         (void) fgets(line1, sizeof (line1), fd);
 684         while (fgets(line1, sizeof (line1), fd) != NULL) {
 685                 if ((fsp = strtok(line1, " \t:")) == NULL) {
 686                         warnx("%s: bad format", line1);
 687                         return (0);
 688                 }
 689                 if ((cp = strtok((char *)0, "\n")) == NULL) {
 690                         warnx("%s: %s: bad format", fsp, &fsp[strlen(fsp) + 1]);
 691                         return (0);
 692                 }
 693                 cnt = sscanf(cp,
 694                     " block grace period: %ld %s file grace period: %ld %s",
 695                     &l_btime, bunits, &l_itime, iunits);
 696                 if (cnt != 4) {
 697                         warnx("%s:%s: bad format", fsp, cp);
 698                         return (0);
 699                 }
 700                 btime = l_btime;
 701                 itime = l_itime;
 702                 if (cvtatos(btime, bunits, &bseconds) == 0)
 703                         return (0);
 704                 if (cvtatos(itime, iunits, &iseconds) == 0)
 705                         return (0);
 706                 for (qup = quplist; qup; qup = qup->next) {
 707                         if (strcmp(fsp, qup->fsname))
 708                                 continue;
 709                         qup->dqblk.dqb_btime = bseconds;
 710                         qup->dqblk.dqb_itime = iseconds;
 711                         qup->flags |= FOUND;
 712                         break;
 713                 }
 714         }
 715         fclose(fd);
 716         /*
 717          * reset default grace periods for any filesystems
 718          * that have not been found.
 719          */
 720         for (qup = quplist; qup; qup = qup->next) {
 721                 if (qup->flags & FOUND) {
 722                         qup->flags &= ~FOUND;
 723                         continue;
 724                 }
 725                 qup->dqblk.dqb_btime = 0;
 726                 qup->dqblk.dqb_itime = 0;
 727         }
 728         return (1);
 729 }
 730
 731 /*
 732  * Convert seconds to ASCII times.
 733  */
 734 char *
 735 cvtstoa(secs)
 736         time_t secs;
 737 {
 738         static char buf[20];
 739
 740         if (secs % (24 * 60 * 60) == 0) {
 741                 secs /= 24 * 60 * 60;
 742                 sprintf(buf, "%ld day%s", (long)secs, secs == 1 ? "" : "s");
 743         } else if (secs % (60 * 60) == 0) {
 744                 secs /= 60 * 60;
 745                 sprintf(buf, "%ld hour%s", (long)secs, secs == 1 ? "" : "s");
 746         } else if (secs % 60 == 0) {
 747                 secs /= 60;
 748                 sprintf(buf, "%ld minute%s", (long)secs, secs == 1 ? "" : "s");
 749         } else
 750                 sprintf(buf, "%ld second%s", (long)secs, secs == 1 ? "" : "s");
 751         return (buf);
 752 }
 753
 754 /*
 755  * Convert ASCII input times to seconds.
 756  */
 757 int
 758 cvtatos(period, units, seconds)
 759         time_t period;
 760         char *units;
 761         time_t *seconds;
 762 {
 763
 764         if (bcmp(units, "second", 6) == 0)
 765                 *seconds = period;
 766         else if (bcmp(units, "minute", 6) == 0)
 767                 *seconds = period * 60;
 768         else if (bcmp(units, "hour", 4) == 0)
 769                 *seconds = period * 60 * 60;
 770         else if (bcmp(units, "day", 3) == 0)
 771                 *seconds = period * 24 * 60 * 60;
 772         else {
 773                 printf("%s: bad units, specify %s\n", units,
 774                     "days, hours, minutes, or seconds");
 775                 return (0);
 776         }
 777         return (1);
 778 }
 779
 780 /*
 781  * Free a list of quotause structures.
 782  */
 783 void
 784 freeprivs(quplist)
 785         struct quotause *quplist;
 786 {
 787         register struct quotause *qup, *nextqup;
 788
 789         for (qup = quplist; qup; qup = nextqup) {
 790                 nextqup = qup->next;
 791                 free(qup);
 792         }
 793 }
 794
 795 /*
 796  * Check whether a string is completely composed of digits.
 797  */
 798 int
 799 alldigits(s)
 800         register const char *s;
 801 {
 802         register int c;
 803
 804         c = *s++;
 805         do {
 806                 if (!isdigit(c))
 807                         return (0);
 808         } while ((c = *s++));
 809         return (1);
 810 }
 811
 812 /*
 813  * Check to see if a particular quota is to be enabled.
 814  */
 815 int
 816 hasquota(fs, type, qfnamep)
 817         register struct fstab *fs;
 818         int type;
 819         char **qfnamep;
 820 {
 821         register char *opt;
 822         char *cp;
 823         static char initname, usrname[100], grpname[100];
 824         static char buf[BUFSIZ];
 825
 826         if (!initname) {
 827                 sprintf(usrname, "%s%s", qfextension[USRQUOTA], qfname);
 828                 sprintf(grpname, "%s%s", qfextension[GRPQUOTA], qfname);
 829                 initname = 1;
 830         }
 831         strcpy(buf, fs->fs_mntops);
 832         for (opt = strtok(buf, ","); opt; opt = strtok(NULL, ",")) {
 833                 if ((cp = index(opt, '=')))
 834                         *cp++ = '\0';
 835                 if (type == USRQUOTA && strcmp(opt, usrname) == 0)
 836                         break;
 837                 if (type == GRPQUOTA && strcmp(opt, grpname) == 0)
 838                         break;
 839         }
 840         if (!opt)
 841                 return (0);
 842         if (cp) {
 843                 *qfnamep = cp;
 844                 return (1);
 845         }
 846         (void) sprintf(buf, "%s/%s.%s", fs->fs_file, qfname, qfextension[type]);
 847         *qfnamep = buf;
 848         return (1);
 849 }