usr.sbin/edquota/edquota.c

   1 /*
   2  * Copyright (c) 1980, 1990, 1993
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * This code is derived from software contributed to Berkeley by
   6  * Robert Elz at The University of Melbourne.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  * 4. Neither the name of the University nor the names of its contributors
  17  *    may be used to endorse or promote products derived from this software
  18  *    without specific prior written permission.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  30  * SUCH DAMAGE.
  31  */
  32
  33 #if 0
  34 #ifndef lint
  35 static const char copyright[] =
  36 "@(#) Copyright (c) 1980, 1990, 1993\n\
  37         The Regents of the University of California.  All rights reserved.\n";
  38 #endif /* not lint */
  39
  40 #ifndef lint
  41 static char sccsid[] = "@(#)edquota.c   8.1 (Berkeley) 6/6/93";
  42 #endif /* not lint */
  43 #endif
  44
  45 #include <sys/cdefs.h>
  46 __FBSDID("$FreeBSD$");
  47
  48 /*
  49  * Disk quota editor.
  50  */
  51
  52 #include <sys/param.h>
  53 #include <sys/stat.h>
  54 #include <sys/file.h>
  55 #include <sys/mount.h>
  56 #include <sys/wait.h>
  57 #include <ufs/ufs/quota.h>
  58 #include <ctype.h>
  59 #include <err.h>
  60 #include <errno.h>
  61 #include <fstab.h>
  62 #include <grp.h>
  63 #include <pwd.h>
  64 #include <signal.h>
  65 #include <stdio.h>
  66 #include <stdlib.h>
  67 #include <string.h>
  68 #include <unistd.h>
  69 #include "pathnames.h"
  70
  71 const char *qfname = QUOTAFILENAME;
  72 const char *qfextension[] = INITQFNAMES;
  73 const char *quotagroup = QUOTAGROUP;
  74 char tmpfil[] = _PATH_TMP;
  75
  76 struct quotause {
  77         struct  quotause *next;
  78         long    flags;
  79         struct  dqblk dqblk;
  80         char    fsname[MAXPATHLEN + 1];
  81         char    qfname[1];      /* actually longer */
  82 };
  83 #define FOUND   0x01
  84
  85 int alldigits(const char *s);
  86 int cvtatos(time_t, char *, time_t *);
  87 char *cvtstoa(time_t);
  88 int editit(char *);
  89 void freeprivs(struct quotause *);
  90 int getentry(const char *, int);
  91 struct quotause *getprivs(long, int, char *);
  92 int hasquota(struct fstab *, int, char **);
  93 void putprivs(long, int, struct quotause *);
  94 int readprivs(struct quotause *, char *);
  95 int readtimes(struct quotause *, char *);
  96 static void usage(void);
  97 int writetimes(struct quotause *, int, int);
  98 int writeprivs(struct quotause *, int, char *, int);
  99
 100 int
 101 main(int argc, char **argv)
 102 {
 103         struct quotause *qup, *protoprivs, *curprivs;
 104         long id, protoid;
 105         long long lim;
 106         int i, quotatype, range, tmpfd;
 107         uid_t startuid, enduid;
 108         u_int32_t *limp;
 109         char *protoname, *cp, *oldoptarg;
 110         int eflag = 0, tflag = 0, pflag = 0, ch;
 111         char *fspath = NULL;
 112         char buf[MAXLOGNAME];
 113
 114         if (argc < 2)
 115                 usage();
 116         if (getuid())
 117                 errx(1, "permission denied");
 118         quotatype = USRQUOTA;
 119         protoprivs = NULL;
 120         curprivs = NULL;
 121         protoname = NULL;
 122         while ((ch = getopt(argc, argv, "ugtf:p:e:")) != -1) {
 123                 switch(ch) {
 124                 case 'f':
 125                         fspath = optarg;
 126                         break;
 127                 case 'p':
 128                         protoname = optarg;
 129                         pflag++;
 130                         break;
 131                 case 'g':
 132                         quotatype = GRPQUOTA;
 133                         break;
 134                 case 'u':
 135                         quotatype = USRQUOTA;
 136                         break;
 137                 case 't':
 138                         tflag++;
 139                         break;
 140                 case 'e':
 141                         if ((qup = malloc(sizeof(*qup))) == NULL)
 142                                 errx(2, "out of memory");
 143                         bzero(qup, sizeof(*qup));
 144                         i = 0;
 145                         oldoptarg = optarg;
 146                         for (cp = optarg; (cp = strsep(&optarg, ":")) != NULL;
 147                             i++) {
 148                                 if (cp != oldoptarg)
 149                                         *(cp - 1) = ':';
 150                                 limp = NULL;
 151                                 switch (i) {
 152                                 case 0:
 153                                         strlcpy(qup->fsname, cp,
 154                                             sizeof(qup->fsname));
 155                                         break;
 156                                 case 1:
 157                                         limp = &qup->dqblk.dqb_bsoftlimit;
 158                                         break;
 159                                 case 2:
 160                                         limp = &qup->dqblk.dqb_bhardlimit;
 161                                         break;
 162                                 case 3:
 163                                         limp = &qup->dqblk.dqb_isoftlimit;
 164                                         break;
 165                                 case 4:
 166                                         limp = &qup->dqblk.dqb_ihardlimit;
 167                                         break;
 168                                 default:
 169                                         warnx("incorrect quota specification: "
 170                                             "%s", oldoptarg);
 171                                         usage();
 172                                         break; /* XXX: report an error */
 173                                 }
 174                                 if (limp != NULL) {
 175                                         lim = strtoll(cp, NULL, 10);
 176                                         if (lim < 0 || lim > UINT_MAX)
 177                                                 errx(1, "invalid limit value: "
 178                                                     "%lld", lim);
 179                                         *limp = (u_int32_t)lim;
 180                                 }
 181                         }
 182                         qup->dqblk.dqb_bsoftlimit =
 183                             btodb((off_t)qup->dqblk.dqb_bsoftlimit * 1024);
 184                         qup->dqblk.dqb_bhardlimit =
 185                             btodb((off_t)qup->dqblk.dqb_bhardlimit * 1024);
 186                         if (protoprivs == NULL) {
 187                                 protoprivs = curprivs = qup;
 188                         } else {
 189                                 curprivs->next = qup;
 190                                 curprivs = qup;
 191                         }
 192                         eflag++;
 193                         pflag++;
 194                         break;
 195                 default:
 196                         usage();
 197                 }
 198         }
 199         argc -= optind;
 200         argv += optind;
 201         if (pflag) {
 202                 if (protoprivs == NULL) {
 203                         if ((protoid = getentry(protoname, quotatype)) == -1)
 204                                 exit(1);
 205                         protoprivs = getprivs(protoid, quotatype, fspath);
 206                         for (qup = protoprivs; qup; qup = qup->next) {
 207                                 qup->dqblk.dqb_btime = 0;
 208                                 qup->dqblk.dqb_itime = 0;
 209                         }
 210                 }
 211                 for (; argc-- > 0; argv++) {
 212                         if (strspn(*argv, "0123456789-") == strlen(*argv) &&
 213                             (cp = strchr(*argv, '-')) != NULL) {
 214                                 *cp++ = '\0';
 215                                 startuid = atoi(*argv);
 216                                 enduid = atoi(cp);
 217                                 if (enduid < startuid)
 218                                         errx(1,
 219         "ending uid (%d) must be >= starting uid (%d) when using uid ranges",
 220                                                 enduid, startuid);
 221                                 range = 1;
 222                         } else {
 223                                 startuid = enduid = 0;
 224                                 range = 0;
 225                         }
 226                         for ( ; startuid <= enduid; startuid++) {
 227                                 if (range)
 228                                         snprintf(buf, sizeof(buf), "%d",
 229                                             startuid);
 230                                 else
 231                                         snprintf(buf, sizeof(buf), "%s",
 232                                                 *argv);
 233                                 if ((id = getentry(buf, quotatype)) < 0)
 234                                         continue;
 235                                 if (eflag) {
 236                                         for (qup = protoprivs; qup;
 237                                             qup = qup->next) {
 238                                                 curprivs = getprivs(id,
 239                                                     quotatype, qup->fsname);
 240                                                 if (curprivs == NULL)
 241                                                         continue;
 242                                                 strcpy(qup->qfname,
 243                                                     curprivs->qfname);
 244                                                 strcpy(qup->fsname,
 245                                                     curprivs->fsname);
 246                                         }
 247                                 }
 248                                 putprivs(id, quotatype, protoprivs);
 249                         }
 250                 }
 251                 exit(0);
 252         }
 253         tmpfd = mkstemp(tmpfil);
 254         fchown(tmpfd, getuid(), getgid());
 255         if (tflag) {
 256                 protoprivs = getprivs(0, quotatype, fspath);
 257                 if (writetimes(protoprivs, tmpfd, quotatype) == 0)
 258                         exit(1);
 259                 if (editit(tmpfil) && readtimes(protoprivs, tmpfil))
 260                         putprivs(0L, quotatype, protoprivs);
 261                 freeprivs(protoprivs);
 262                 close(tmpfd);
 263                 unlink(tmpfil);
 264                 exit(0);
 265         }
 266         for ( ; argc > 0; argc--, argv++) {
 267                 if ((id = getentry(*argv, quotatype)) == -1)
 268                         continue;
 269                 curprivs = getprivs(id, quotatype, fspath);
 270                 if (writeprivs(curprivs, tmpfd, *argv, quotatype) == 0)
 271                         continue;
 272                 if (editit(tmpfil) && readprivs(curprivs, tmpfil))
 273                         putprivs(id, quotatype, curprivs);
 274                 freeprivs(curprivs);
 275         }
 276         close(tmpfd);
 277         unlink(tmpfil);
 278         exit(0);
 279 }
 280
 281 static void
 282 usage()
 283 {
 284         fprintf(stderr, "%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n",
 285                 "usage: edquota [-u] [-f fspath] [-p username] username ...",
 286                 "       edquota [-u] -e fspath[:bslim[:bhlim[:islim[:ihlim]]]] [-e ...]",
 287                 "               username ...",
 288                 "       edquota -g [-f fspath] [-p groupname] groupname ...",
 289                 "       edquota -g -e fspath[:bslim[:bhlim[:islim[:ihlim]]]] [-e ...]",
 290                 "               groupname ...",
 291                 "       edquota [-u] -t [-f fspath]",
 292                 "       edquota -g -t [-f fspath]");
 293         exit(1);
 294 }
 295
 296 /*
 297  * This routine converts a name for a particular quota type to
 298  * an identifier. This routine must agree with the kernel routine
 299  * getinoquota as to the interpretation of quota types.
 300  */
 301 int
 302 getentry(name, quotatype)
 303         const char *name;
 304         int quotatype;
 305 {
 306         struct passwd *pw;
 307         struct group *gr;
 308
 309         if (alldigits(name))
 310                 return (atoi(name));
 311         switch(quotatype) {
 312         case USRQUOTA:
 313                 if ((pw = getpwnam(name)))
 314                         return (pw->pw_uid);
 315                 warnx("%s: no such user", name);
 316                 break;
 317         case GRPQUOTA:
 318                 if ((gr = getgrnam(name)))
 319                         return (gr->gr_gid);
 320                 warnx("%s: no such group", name);
 321                 break;
 322         default:
 323                 warnx("%d: unknown quota type", quotatype);
 324                 break;
 325         }
 326         sleep(1);
 327         return (-1);
 328 }
 329
 330 /*
 331  * Collect the requested quota information.
 332  */
 333 struct quotause *
 334 getprivs(id, quotatype, fspath)
 335         register long id;
 336         int quotatype;
 337         char *fspath;
 338 {
 339         register struct fstab *fs;
 340         register struct quotause *qup, *quptail;
 341         struct quotause *quphead;
 342         int qcmd, qupsize, fd;
 343         char *qfpathname;
 344         static int warned = 0;
 345
 346         setfsent();
 347         quphead = quptail = NULL;
 348         qcmd = QCMD(Q_GETQUOTA, quotatype);
 349         while ((fs = getfsent())) {
 350                 if (fspath && *fspath && strcmp(fspath, fs->fs_spec) &&
 351                     strcmp(fspath, fs->fs_file))
 352                         continue;
 353                 if (strcmp(fs->fs_vfstype, "ufs"))
 354                         continue;
 355                 if (!hasquota(fs, quotatype, &qfpathname))
 356                         continue;
 357                 qupsize = sizeof(*qup) + strlen(qfpathname);
 358                 if ((qup = (struct quotause *)malloc(qupsize)) == NULL)
 359                         errx(2, "out of memory");
 360                 if (quotactl(fs->fs_file, qcmd, id, &qup->dqblk) != 0) {
 361                         if (errno == EOPNOTSUPP && !warned) {
 362                                 warned++;
 363                 warnx("warning: quotas are not compiled into this kernel");
 364                                 sleep(3);
 365                         }
 366                         if ((fd = open(qfpathname, O_RDONLY)) < 0) {
 367                                 fd = open(qfpathname, O_RDWR|O_CREAT, 0640);
 368                                 if (fd < 0 && errno != ENOENT) {
 369                                         warn("%s", qfpathname);
 370                                         free(qup);
 371                                         continue;
 372                                 }
 373                                 warnx("creating quota file %s", qfpathname);
 374                                 sleep(3);
 375                                 (void) fchown(fd, getuid(),
 376                                     getentry(quotagroup, GRPQUOTA));
 377                                 (void) fchmod(fd, 0640);
 378                         }
 379                         if (lseek(fd, (off_t)id * sizeof(struct dqblk),
 380                             L_SET) < 0) {
 381                                 warn("seek error on %s", qfpathname);
 382                                 close(fd);
 383                                 free(qup);
 384                                 continue;
 385                         }
 386                         switch (read(fd, &qup->dqblk, sizeof(struct dqblk))) {
 387                         case 0:                 /* EOF */
 388                                 /*
 389                                  * Convert implicit 0 quota (EOF)
 390                                  * into an explicit one (zero'ed dqblk)
 391                                  */
 392                                 bzero((caddr_t)&qup->dqblk,
 393                                     sizeof(struct dqblk));
 394                                 break;
 395
 396                         case sizeof(struct dqblk):      /* OK */
 397                                 break;
 398
 399                         default:                /* ERROR */
 400                                 warn("read error in %s", qfpathname);
 401                                 close(fd);
 402                                 free(qup);
 403                                 continue;
 404                         }
 405                         close(fd);
 406                 }
 407                 strcpy(qup->qfname, qfpathname);
 408                 strcpy(qup->fsname, fs->fs_file);
 409                 if (quphead == NULL)
 410                         quphead = qup;
 411                 else
 412                         quptail->next = qup;
 413                 quptail = qup;
 414                 qup->next = 0;
 415         }
 416         endfsent();
 417         return (quphead);
 418 }
 419
 420 /*
 421  * Store the requested quota information.
 422  */
 423 void
 424 putprivs(id, quotatype, quplist)
 425         long id;
 426         int quotatype;
 427         struct quotause *quplist;
 428 {
 429         register struct quotause *qup;
 430         int qcmd, fd;
 431         struct dqblk dqbuf;
 432
 433         qcmd = QCMD(Q_SETQUOTA, quotatype);
 434         for (qup = quplist; qup; qup = qup->next) {
 435                 if (quotactl(qup->fsname, qcmd, id, &qup->dqblk) == 0)
 436                         continue;
 437                 if ((fd = open(qup->qfname, O_RDWR)) < 0) {
 438                         warn("%s", qup->qfname);
 439                         continue;
 440                 }
 441                 if (lseek(fd, (off_t)id * sizeof(struct dqblk), L_SET) < 0) {
 442                         warn("seek error on %s", qup->qfname);
 443                         close(fd);
 444                         continue;
 445                 }
 446                 switch (read(fd, &dqbuf, sizeof(struct dqblk))) {
 447                 case 0:                 /* EOF */
 448                         /*
 449                          * Convert implicit 0 quota (EOF)
 450                          * into an explicit one (zero'ed dqblk)
 451                          */
 452                         bzero(&dqbuf, sizeof(struct dqblk));
 453                         break;
 454
 455                 case sizeof(struct dqblk):      /* OK */
 456                         break;
 457
 458                 default:                /* ERROR */
 459                         warn("read error in %s", qup->qfname);
 460                         close(fd);
 461                         continue;
 462                 }
 463                 /*
 464                  * Reset time limit if have a soft limit and were
 465                  * previously under it, but are now over it
 466                  * or if there previously was no soft limit, but
 467                  * now have one and are over it.
 468                  */
 469                 if (dqbuf.dqb_bsoftlimit && id != 0 &&
 470                     dqbuf.dqb_curblocks < dqbuf.dqb_bsoftlimit &&
 471                     dqbuf.dqb_curblocks >= qup->dqblk.dqb_bsoftlimit)
 472                         qup->dqblk.dqb_btime = 0;
 473                 if (dqbuf.dqb_bsoftlimit == 0 && id != 0 &&
 474                     dqbuf.dqb_curblocks >= qup->dqblk.dqb_bsoftlimit)
 475                         qup->dqblk.dqb_btime = 0;
 476                 if (dqbuf.dqb_isoftlimit && id != 0 &&
 477                     dqbuf.dqb_curinodes < dqbuf.dqb_isoftlimit &&
 478                     dqbuf.dqb_curinodes >= qup->dqblk.dqb_isoftlimit)
 479                         qup->dqblk.dqb_itime = 0;
 480                 if (dqbuf.dqb_isoftlimit == 0 && id !=0 &&
 481                     dqbuf.dqb_curinodes >= qup->dqblk.dqb_isoftlimit)
 482                         qup->dqblk.dqb_itime = 0;
 483                 qup->dqblk.dqb_curinodes = dqbuf.dqb_curinodes;
 484                 qup->dqblk.dqb_curblocks = dqbuf.dqb_curblocks;
 485                 if (lseek(fd, (off_t)id * sizeof(struct dqblk), L_SET) < 0) {
 486                         warn("seek error on %s", qup->qfname);
 487                         close(fd);
 488                         continue;
 489                 }
 490                 if (write(fd, &qup->dqblk, sizeof (struct dqblk)) !=
 491                     sizeof (struct dqblk)) {
 492                         warn("%s", qup->qfname);
 493                         }
 494                 close(fd);
 495         }
 496 }
 497
 498 /*
 499  * Take a list of priviledges and get it edited.
 500  */
 501 int
 502 editit(tmpf)
 503         char *tmpf;
 504 {
 505         long omask;
 506         int pid, status;
 507
 508         omask = sigblock(sigmask(SIGINT)|sigmask(SIGQUIT)|sigmask(SIGHUP));
 509  top:
 510         if ((pid = fork()) < 0) {
 511
 512                 if (errno == EPROCLIM) {
 513                         warnx("you have too many processes");
 514                         return(0);
 515                 }
 516                 if (errno == EAGAIN) {
 517                         sleep(1);
 518                         goto top;
 519                 }
 520                 warn("fork");
 521                 return (0);
 522         }
 523         if (pid == 0) {
 524                 register const char *ed;
 525
 526                 sigsetmask(omask);
 527                 setgid(getgid());
 528                 setuid(getuid());
 529                 if ((ed = getenv("EDITOR")) == (char *)0)
 530                         ed = _PATH_VI;
 531                 execlp(ed, ed, tmpf, (char *)0);
 532                 err(1, "%s", ed);
 533         }
 534         waitpid(pid, &status, 0);
 535         sigsetmask(omask);
 536         if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
 537                 return (0);
 538         return (1);
 539 }
 540
 541 /*
 542  * Convert a quotause list to an ASCII file.
 543  */
 544 int
 545 writeprivs(quplist, outfd, name, quotatype)
 546         struct quotause *quplist;
 547         int outfd;
 548         char *name;
 549         int quotatype;
 550 {
 551         register struct quotause *qup;
 552         FILE *fd;
 553
 554         ftruncate(outfd, 0);
 555         lseek(outfd, 0, L_SET);
 556         if ((fd = fdopen(dup(outfd), "w")) == NULL)
 557                 err(1, "%s", tmpfil);
 558         fprintf(fd, "Quotas for %s %s:\n", qfextension[quotatype], name);
 559         for (qup = quplist; qup; qup = qup->next) {
 560                 fprintf(fd, "%s: %s %lu, limits (soft = %lu, hard = %lu)\n",
 561                     qup->fsname, "kbytes in use:",
 562                     (unsigned long)(dbtob(qup->dqblk.dqb_curblocks) / 1024),
 563                     (unsigned long)(dbtob(qup->dqblk.dqb_bsoftlimit) / 1024),
 564                     (unsigned long)(dbtob(qup->dqblk.dqb_bhardlimit) / 1024));
 565                 fprintf(fd, "%s %lu, limits (soft = %lu, hard = %lu)\n",
 566                     "\tinodes in use:",
 567                     (unsigned long)qup->dqblk.dqb_curinodes,
 568                     (unsigned long)qup->dqblk.dqb_isoftlimit,
 569                     (unsigned long)qup->dqblk.dqb_ihardlimit);
 570         }
 571         fclose(fd);
 572         return (1);
 573 }
 574
 575 /*
 576  * Merge changes to an ASCII file into a quotause list.
 577  */
 578 int
 579 readprivs(quplist, inname)
 580         struct quotause *quplist;
 581         char *inname;
 582 {
 583         register struct quotause *qup;
 584         FILE *fd;
 585         unsigned long bhardlimit, bsoftlimit, curblocks;
 586         unsigned long ihardlimit, isoftlimit, curinodes;
 587         int cnt;
 588         register char *cp;
 589         struct dqblk dqblk;
 590         char *fsp, line1[BUFSIZ], line2[BUFSIZ];
 591
 592         fd = fopen(inname, "r");
 593         if (fd == NULL) {
 594                 warnx("can't re-read temp file!!");
 595                 return (0);
 596         }
 597         /*
 598          * Discard title line, then read pairs of lines to process.
 599          */
 600         (void) fgets(line1, sizeof (line1), fd);
 601         while (fgets(line1, sizeof (line1), fd) != NULL &&
 602                fgets(line2, sizeof (line2), fd) != NULL) {
 603                 if ((fsp = strtok(line1, " \t:")) == NULL) {
 604                         warnx("%s: bad format", line1);
 605                         return (0);
 606                 }
 607                 if ((cp = strtok((char *)0, "\n")) == NULL) {
 608                         warnx("%s: %s: bad format", fsp, &fsp[strlen(fsp) + 1]);
 609                         return (0);
 610                 }
 611                 cnt = sscanf(cp,
 612                     " kbytes in use: %lu, limits (soft = %lu, hard = %lu)",
 613                     &curblocks, &bsoftlimit, &bhardlimit);
 614                 if (cnt != 3) {
 615                         warnx("%s:%s: bad format", fsp, cp);
 616                         return (0);
 617                 }
 618                 dqblk.dqb_curblocks = btodb((off_t)curblocks * 1024);
 619                 dqblk.dqb_bsoftlimit = btodb((off_t)bsoftlimit * 1024);
 620                 dqblk.dqb_bhardlimit = btodb((off_t)bhardlimit * 1024);
 621                 if ((cp = strtok(line2, "\n")) == NULL) {
 622                         warnx("%s: %s: bad format", fsp, line2);
 623                         return (0);
 624                 }
 625                 cnt = sscanf(cp,
 626                     "\tinodes in use: %lu, limits (soft = %lu, hard = %lu)",
 627                     &curinodes, &isoftlimit, &ihardlimit);
 628                 if (cnt != 3) {
 629                         warnx("%s: %s: bad format", fsp, line2);
 630                         return (0);
 631                 }
 632                 dqblk.dqb_curinodes = curinodes;
 633                 dqblk.dqb_isoftlimit = isoftlimit;
 634                 dqblk.dqb_ihardlimit = ihardlimit;
 635                 for (qup = quplist; qup; qup = qup->next) {
 636                         if (strcmp(fsp, qup->fsname))
 637                                 continue;
 638                         /*
 639                          * Cause time limit to be reset when the quota
 640                          * is next used if previously had no soft limit
 641                          * or were under it, but now have a soft limit
 642                          * and are over it.
 643                          */
 644                         if (dqblk.dqb_bsoftlimit &&
 645                             qup->dqblk.dqb_curblocks >= dqblk.dqb_bsoftlimit &&
 646                             (qup->dqblk.dqb_bsoftlimit == 0 ||
 647                              qup->dqblk.dqb_curblocks <
 648                              qup->dqblk.dqb_bsoftlimit))
 649                                 qup->dqblk.dqb_btime = 0;
 650                         if (dqblk.dqb_isoftlimit &&
 651                             qup->dqblk.dqb_curinodes >= dqblk.dqb_isoftlimit &&
 652                             (qup->dqblk.dqb_isoftlimit == 0 ||
 653                              qup->dqblk.dqb_curinodes <
 654                              qup->dqblk.dqb_isoftlimit))
 655                                 qup->dqblk.dqb_itime = 0;
 656                         qup->dqblk.dqb_bsoftlimit = dqblk.dqb_bsoftlimit;
 657                         qup->dqblk.dqb_bhardlimit = dqblk.dqb_bhardlimit;
 658                         qup->dqblk.dqb_isoftlimit = dqblk.dqb_isoftlimit;
 659                         qup->dqblk.dqb_ihardlimit = dqblk.dqb_ihardlimit;
 660                         qup->flags |= FOUND;
 661                         if (dqblk.dqb_curblocks == qup->dqblk.dqb_curblocks &&
 662                             dqblk.dqb_curinodes == qup->dqblk.dqb_curinodes)
 663                                 break;
 664                         warnx("%s: cannot change current allocation", fsp);
 665                         break;
 666                 }
 667         }
 668         fclose(fd);
 669         /*
 670          * Disable quotas for any filesystems that have not been found.
 671          */
 672         for (qup = quplist; qup; qup = qup->next) {
 673                 if (qup->flags & FOUND) {
 674                         qup->flags &= ~FOUND;
 675                         continue;
 676                 }
 677                 qup->dqblk.dqb_bsoftlimit = 0;
 678                 qup->dqblk.dqb_bhardlimit = 0;
 679                 qup->dqblk.dqb_isoftlimit = 0;
 680                 qup->dqblk.dqb_ihardlimit = 0;
 681         }
 682         return (1);
 683 }
 684
 685 /*
 686  * Convert a quotause list to an ASCII file of grace times.
 687  */
 688 int
 689 writetimes(quplist, outfd, quotatype)
 690         struct quotause *quplist;
 691         int outfd;
 692         int quotatype;
 693 {
 694         register struct quotause *qup;
 695         FILE *fd;
 696
 697         ftruncate(outfd, 0);
 698         lseek(outfd, 0, L_SET);
 699         if ((fd = fdopen(dup(outfd), "w")) == NULL)
 700                 err(1, "%s", tmpfil);
 701         fprintf(fd, "Time units may be: days, hours, minutes, or seconds\n");
 702         fprintf(fd, "Grace period before enforcing soft limits for %ss:\n",
 703             qfextension[quotatype]);
 704         for (qup = quplist; qup; qup = qup->next) {
 705                 fprintf(fd, "%s: block grace period: %s, ",
 706                     qup->fsname, cvtstoa(qup->dqblk.dqb_btime));
 707                 fprintf(fd, "file grace period: %s\n",
 708                     cvtstoa(qup->dqblk.dqb_itime));
 709         }
 710         fclose(fd);
 711         return (1);
 712 }
 713
 714 /*
 715  * Merge changes of grace times in an ASCII file into a quotause list.
 716  */
 717 int
 718 readtimes(quplist, inname)
 719         struct quotause *quplist;
 720         char *inname;
 721 {
 722         register struct quotause *qup;
 723         FILE *fd;
 724         int cnt;
 725         register char *cp;
 726         time_t itime, btime, iseconds, bseconds;
 727         long l_itime, l_btime;
 728         char *fsp, bunits[10], iunits[10], line1[BUFSIZ];
 729
 730         fd = fopen(inname, "r");
 731         if (fd == NULL) {
 732                 warnx("can't re-read temp file!!");
 733                 return (0);
 734         }
 735         /*
 736          * Discard two title lines, then read lines to process.
 737          */
 738         (void) fgets(line1, sizeof (line1), fd);
 739         (void) fgets(line1, sizeof (line1), fd);
 740         while (fgets(line1, sizeof (line1), fd) != NULL) {
 741                 if ((fsp = strtok(line1, " \t:")) == NULL) {
 742                         warnx("%s: bad format", line1);
 743                         return (0);
 744                 }
 745                 if ((cp = strtok((char *)0, "\n")) == NULL) {
 746                         warnx("%s: %s: bad format", fsp, &fsp[strlen(fsp) + 1]);
 747                         return (0);
 748                 }
 749                 cnt = sscanf(cp,
 750                     " block grace period: %ld %s file grace period: %ld %s",
 751                     &l_btime, bunits, &l_itime, iunits);
 752                 if (cnt != 4) {
 753                         warnx("%s:%s: bad format", fsp, cp);
 754                         return (0);
 755                 }
 756                 btime = l_btime;
 757                 itime = l_itime;
 758                 if (cvtatos(btime, bunits, &bseconds) == 0)
 759                         return (0);
 760                 if (cvtatos(itime, iunits, &iseconds) == 0)
 761                         return (0);
 762                 for (qup = quplist; qup; qup = qup->next) {
 763                         if (strcmp(fsp, qup->fsname))
 764                                 continue;
 765                         qup->dqblk.dqb_btime = bseconds;
 766                         qup->dqblk.dqb_itime = iseconds;
 767                         qup->flags |= FOUND;
 768                         break;
 769                 }
 770         }
 771         fclose(fd);
 772         /*
 773          * reset default grace periods for any filesystems
 774          * that have not been found.
 775          */
 776         for (qup = quplist; qup; qup = qup->next) {
 777                 if (qup->flags & FOUND) {
 778                         qup->flags &= ~FOUND;
 779                         continue;
 780                 }
 781                 qup->dqblk.dqb_btime = 0;
 782                 qup->dqblk.dqb_itime = 0;
 783         }
 784         return (1);
 785 }
 786
 787 /*
 788  * Convert seconds to ASCII times.
 789  */
 790 char *
 791 cvtstoa(secs)
 792         time_t secs;
 793 {
 794         static char buf[20];
 795
 796         if (secs % (24 * 60 * 60) == 0) {
 797                 secs /= 24 * 60 * 60;
 798                 sprintf(buf, "%ld day%s", (long)secs, secs == 1 ? "" : "s");
 799         } else if (secs % (60 * 60) == 0) {
 800                 secs /= 60 * 60;
 801                 sprintf(buf, "%ld hour%s", (long)secs, secs == 1 ? "" : "s");
 802         } else if (secs % 60 == 0) {
 803                 secs /= 60;
 804                 sprintf(buf, "%ld minute%s", (long)secs, secs == 1 ? "" : "s");
 805         } else
 806                 sprintf(buf, "%ld second%s", (long)secs, secs == 1 ? "" : "s");
 807         return (buf);
 808 }
 809
 810 /*
 811  * Convert ASCII input times to seconds.
 812  */
 813 int
 814 cvtatos(period, units, seconds)
 815         time_t period;
 816         char *units;
 817         time_t *seconds;
 818 {
 819
 820         if (bcmp(units, "second", 6) == 0)
 821                 *seconds = period;
 822         else if (bcmp(units, "minute", 6) == 0)
 823                 *seconds = period * 60;
 824         else if (bcmp(units, "hour", 4) == 0)
 825                 *seconds = period * 60 * 60;
 826         else if (bcmp(units, "day", 3) == 0)
 827                 *seconds = period * 24 * 60 * 60;
 828         else {
 829                 printf("%s: bad units, specify %s\n", units,
 830                     "days, hours, minutes, or seconds");
 831                 return (0);
 832         }
 833         return (1);
 834 }
 835
 836 /*
 837  * Free a list of quotause structures.
 838  */
 839 void
 840 freeprivs(quplist)
 841         struct quotause *quplist;
 842 {
 843         register struct quotause *qup, *nextqup;
 844
 845         for (qup = quplist; qup; qup = nextqup) {
 846                 nextqup = qup->next;
 847                 free(qup);
 848         }
 849 }
 850
 851 /*
 852  * Check whether a string is completely composed of digits.
 853  */
 854 int
 855 alldigits(s)
 856         register const char *s;
 857 {
 858         register int c;
 859
 860         c = *s++;
 861         do {
 862                 if (!isdigit(c))
 863                         return (0);
 864         } while ((c = *s++));
 865         return (1);
 866 }
 867
 868 /*
 869  * Check to see if a particular quota is to be enabled.
 870  */
 871 int
 872 hasquota(fs, type, qfnamep)
 873         struct fstab *fs;
 874         int type;
 875         char **qfnamep;
 876 {
 877         char *opt;
 878         char *cp;
 879         struct statfs sfb;
 880         static char initname, usrname[100], grpname[100];
 881         static char buf[BUFSIZ];
 882
 883         if (!initname) {
 884                 (void)snprintf(usrname, sizeof(usrname), "%s%s",
 885                     qfextension[USRQUOTA], qfname);
 886                 (void)snprintf(grpname, sizeof(grpname), "%s%s",
 887                     qfextension[GRPQUOTA], qfname);
 888                 initname = 1;
 889         }
 890         strcpy(buf, fs->fs_mntops);
 891         for (opt = strtok(buf, ","); opt; opt = strtok(NULL, ",")) {
 892                 if ((cp = index(opt, '=')))
 893                         *cp++ = '\0';
 894                 if (type == USRQUOTA && strcmp(opt, usrname) == 0)
 895                         break;
 896                 if (type == GRPQUOTA && strcmp(opt, grpname) == 0)
 897                         break;
 898         }
 899         if (!opt)
 900                 return (0);
 901         if (cp)
 902                 *qfnamep = cp;
 903         else {
 904                 (void)snprintf(buf, sizeof(buf), "%s/%s.%s", fs->fs_file,
 905                     qfname, qfextension[type]);
 906                 *qfnamep = buf;
 907         }
 908         if (statfs(fs->fs_file, &sfb) != 0) {
 909                 warn("cannot statfs mount point %s", fs->fs_file);
 910                 return (0);
 911         }
 912         if (strcmp(fs->fs_file, sfb.f_mntonname)) {
 913                 warnx("%s not mounted for %s quotas", fs->fs_file,
 914                     type == USRQUOTA ? "user" : "group");
 915                 sleep(3);
 916                 return (0);
 917         }
 918         return (1);
 919 }