usr.sbin/edquota/edquota.c

   1 /*
   2  * Copyright (c) 1980, 1990, 1993
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * This code is derived from software contributed to Berkeley by
   6  * Robert Elz at The University of Melbourne.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  * 3. All advertising materials mentioning features or use of this software
  17  *    must display the following acknowledgement:
  18  *      This product includes software developed by the University of
  19  *      California, Berkeley and its contributors.
  20  * 4. Neither the name of the University nor the names of its contributors
  21  *    may be used to endorse or promote products derived from this software
  22  *    without specific prior written permission.
  23  *
  24  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  25  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  26  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  27  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  28  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  29  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  30  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  31  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  32  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  33  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  34  * SUCH DAMAGE.
  35  *
  36  * @(#) Copyright (c) 1980, 1990, 1993 The Regents of the University of California.  All rights reserved.
  37  * @(#)edquota.c        8.1 (Berkeley) 6/6/93
  38  * $FreeBSD: src/usr.sbin/edquota/edquota.c,v 1.9.2.6 2002/10/31 22:38:43 iedowse Exp $
  39  * $DragonFly: src/usr.sbin/edquota/edquota.c,v 1.2 2003/06/17 04:29:53 dillon Exp $
  40  */
  41
  42 /*
  43  * Disk quota editor.
  44  */
  45 #include <sys/param.h>
  46 #include <sys/stat.h>
  47 #include <sys/file.h>
  48 #include <sys/wait.h>
  49 #include <ufs/ufs/quota.h>
  50 #include <ctype.h>
  51 #include <err.h>
  52 #include <errno.h>
  53 #include <fstab.h>
  54 #include <grp.h>
  55 #include <pwd.h>
  56 #include <signal.h>
  57 #include <stdio.h>
  58 #include <stdlib.h>
  59 #include <string.h>
  60 #include <unistd.h>
  61 #include "pathnames.h"
  62
  63 const char *qfname = QUOTAFILENAME;
  64 const char *qfextension[] = INITQFNAMES;
  65 const char *quotagroup = QUOTAGROUP;
  66 char tmpfil[] = _PATH_TMP;
  67
  68 struct quotause {
  69         struct  quotause *next;
  70         long    flags;
  71         struct  dqblk dqblk;
  72         char    fsname[MAXPATHLEN + 1];
  73         char    qfname[1];      /* actually longer */
  74 };
  75 #define FOUND   0x01
  76
  77 int alldigits(const char *s);
  78 int cvtatos(time_t, char *, time_t *);
  79 char *cvtstoa(time_t);
  80 int editit(char *);
  81 void freeprivs(struct quotause *);
  82 int getentry(const char *, int);
  83 struct quotause *getprivs(long, int, char *);
  84 int hasquota(struct fstab *, int, char **);
  85 void putprivs(long, int, struct quotause *);
  86 int readprivs(struct quotause *, char *);
  87 int readtimes(struct quotause *, char *);
  88 static void usage(void);
  89 int writetimes(struct quotause *, int, int);
  90 int writeprivs(struct quotause *, int, char *, int);
  91
  92 int
  93 main(int argc, char **argv)
  94 {
  95         struct quotause *qup, *protoprivs, *curprivs;
  96         long id, protoid;
  97         long long lim;
  98         int i, quotatype, range, tmpfd;
  99         uid_t startuid, enduid;
 100         u_int32_t *limp;
 101         char *protoname, *cp, *oldoptarg, ch;
 102         int eflag = 0, tflag = 0, pflag = 0;
 103         char *fspath = NULL;
 104         char buf[30];
 105
 106         if (argc < 2)
 107                 usage();
 108         if (getuid())
 109                 errx(1, "permission denied");
 110         quotatype = USRQUOTA;
 111         protoprivs = NULL;
 112         while ((ch = getopt(argc, argv, "ugtf:p:e:")) != -1) {
 113                 switch(ch) {
 114                 case 'f':
 115                         fspath = optarg;
 116                         break;
 117                 case 'p':
 118                         protoname = optarg;
 119                         pflag++;
 120                         break;
 121                 case 'g':
 122                         quotatype = GRPQUOTA;
 123                         break;
 124                 case 'u':
 125                         quotatype = USRQUOTA;
 126                         break;
 127                 case 't':
 128                         tflag++;
 129                         break;
 130                 case 'e':
 131                         if ((qup = malloc(sizeof(*qup))) == NULL)
 132                                 errx(2, "out of memory");
 133                         bzero(qup, sizeof(*qup));
 134                         i = 0;
 135                         oldoptarg = optarg;
 136                         for (cp = optarg; (cp = strsep(&optarg, ":")) != NULL;
 137                             i++) {
 138                                 if (cp != oldoptarg)
 139                                         *(cp - 1) = ':';
 140                                 limp = NULL;
 141                                 switch (i) {
 142                                 case 0:
 143                                         strlcpy(qup->fsname, cp,
 144                                             sizeof(qup->fsname));
 145                                         break;
 146                                 case 1:
 147                                         limp = &qup->dqblk.dqb_bsoftlimit;
 148                                         break;
 149                                 case 2:
 150                                         limp = &qup->dqblk.dqb_bhardlimit;
 151                                         break;
 152                                 case 3:
 153                                         limp = &qup->dqblk.dqb_isoftlimit;
 154                                         break;
 155                                 case 4:
 156                                         limp = &qup->dqblk.dqb_ihardlimit;
 157                                         break;
 158                                 default:
 159                                         warnx("incorrect quota specification: "
 160                                             "%s", oldoptarg);
 161                                         usage();
 162                                         break; /* XXX: report an error */
 163                                 }
 164                                 if (limp != NULL) {
 165                                         lim = strtoll(cp, NULL, 10);
 166                                         if (lim < 0 || lim > UINT_MAX)
 167                                                 errx(1, "invalid limit value: "
 168                                                     "%lld", lim);
 169                                         *limp = (u_int32_t)lim;
 170                                 }
 171                         }
 172                         qup->dqblk.dqb_bsoftlimit =
 173                             btodb((off_t)qup->dqblk.dqb_bsoftlimit * 1024);
 174                         qup->dqblk.dqb_bhardlimit =
 175                             btodb((off_t)qup->dqblk.dqb_bhardlimit * 1024);
 176                         if (protoprivs == NULL) {
 177                                 protoprivs = curprivs = qup;
 178                         } else {
 179                                 curprivs->next = qup;
 180                                 curprivs = qup;
 181                         }
 182                         eflag++;
 183                         pflag++;
 184                         break;
 185                 default:
 186                         usage();
 187                 }
 188         }
 189         argc -= optind;
 190         argv += optind;
 191         if (pflag) {
 192                 if (protoprivs == NULL) {
 193                         if ((protoid = getentry(protoname, quotatype)) == -1)
 194                                 exit(1);
 195                         protoprivs = getprivs(protoid, quotatype, fspath);
 196                         for (qup = protoprivs; qup; qup = qup->next) {
 197                                 qup->dqblk.dqb_btime = 0;
 198                                 qup->dqblk.dqb_itime = 0;
 199                         }
 200                 }
 201                 for (; argc-- > 0; argv++) {
 202                         if (strspn(*argv, "0123456789-") == strlen(*argv) &&
 203                             (cp = strchr(*argv, '-')) != NULL) {
 204                                 *cp++ = '\0';
 205                                 startuid = atoi(*argv);
 206                                 enduid = atoi(cp);
 207                                 if (enduid < startuid)
 208                                         errx(1,
 209         "ending uid (%d) must be >= starting uid (%d) when using uid ranges",
 210                                                 enduid, startuid);
 211                                 range = 1;
 212                         } else {
 213                                 startuid = enduid = 0;
 214                                 range = 0;
 215                         }
 216                         for ( ; startuid <= enduid; startuid++) {
 217                                 if (range)
 218                                         snprintf(buf, sizeof(buf), "%d",
 219                                             startuid);
 220                                 else
 221                                         snprintf(buf, sizeof(buf), "%s",
 222                                                 *argv);
 223                                 if ((id = getentry(buf, quotatype)) < 0)
 224                                         continue;
 225                                 if (eflag) {
 226                                         for (qup = protoprivs; qup;
 227                                             qup = qup->next) {
 228                                                 curprivs = getprivs(id,
 229                                                     quotatype, qup->fsname);
 230                                                 if (curprivs == NULL)
 231                                                         continue;
 232                                                 strcpy(qup->qfname,
 233                                                     curprivs->qfname);
 234                                                 strcpy(qup->fsname,
 235                                                     curprivs->fsname);
 236                                         }
 237                                 }
 238                                 putprivs(id, quotatype, protoprivs);
 239                         }
 240                 }
 241                 exit(0);
 242         }
 243         tmpfd = mkstemp(tmpfil);
 244         fchown(tmpfd, getuid(), getgid());
 245         if (tflag) {
 246                 protoprivs = getprivs(0, quotatype, fspath);
 247                 if (writetimes(protoprivs, tmpfd, quotatype) == 0)
 248                         exit(1);
 249                 if (editit(tmpfil) && readtimes(protoprivs, tmpfil))
 250                         putprivs(0, quotatype, protoprivs);
 251                 freeprivs(protoprivs);
 252                 close(tmpfd);
 253                 unlink(tmpfil);
 254                 exit(0);
 255         }
 256         for ( ; argc > 0; argc--, argv++) {
 257                 if ((id = getentry(*argv, quotatype)) == -1)
 258                         continue;
 259                 curprivs = getprivs(id, quotatype, fspath);
 260                 if (writeprivs(curprivs, tmpfd, *argv, quotatype) == 0)
 261                         continue;
 262                 if (editit(tmpfil) && readprivs(curprivs, tmpfil))
 263                         putprivs(id, quotatype, curprivs);
 264                 freeprivs(curprivs);
 265         }
 266         close(tmpfd);
 267         unlink(tmpfil);
 268         exit(0);
 269 }
 270
 271 static void
 272 usage()
 273 {
 274         fprintf(stderr, "%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n",
 275                 "usage: edquota [-u] [-f fspath] [-p username] username ...",
 276                 "       edquota [-u] -e fspath[:bslim[:bhlim[:islim[:ihlim]]]] [-e ...]",
 277                 "               username ...",
 278                 "       edquota -g [-f fspath] [-p groupname] groupname ...",
 279                 "       edquota -g -e fspath[:bslim[:bhlim[:islim[:ihlim]]]] [-e ...]",
 280                 "               groupname ...",
 281                 "       edquota [-u] -t [-f fspath]",
 282                 "       edquota -g -t [-f fspath]");
 283         exit(1);
 284 }
 285
 286 /*
 287  * This routine converts a name for a particular quota type to
 288  * an identifier. This routine must agree with the kernel routine
 289  * getinoquota as to the interpretation of quota types.
 290  */
 291 int
 292 getentry(name, quotatype)
 293         const char *name;
 294         int quotatype;
 295 {
 296         struct passwd *pw;
 297         struct group *gr;
 298
 299         if (alldigits(name))
 300                 return (atoi(name));
 301         switch(quotatype) {
 302         case USRQUOTA:
 303                 if ((pw = getpwnam(name)))
 304                         return (pw->pw_uid);
 305                 warnx("%s: no such user", name);
 306                 break;
 307         case GRPQUOTA:
 308                 if ((gr = getgrnam(name)))
 309                         return (gr->gr_gid);
 310                 warnx("%s: no such group", name);
 311                 break;
 312         default:
 313                 warnx("%d: unknown quota type", quotatype);
 314                 break;
 315         }
 316         sleep(1);
 317         return (-1);
 318 }
 319
 320 /*
 321  * Collect the requested quota information.
 322  */
 323 struct quotause *
 324 getprivs(id, quotatype, fspath)
 325         register long id;
 326         int quotatype;
 327         char *fspath;
 328 {
 329         register struct fstab *fs;
 330         register struct quotause *qup, *quptail;
 331         struct quotause *quphead;
 332         int qcmd, qupsize, fd;
 333         char *qfpathname;
 334         static int warned = 0;
 335
 336         setfsent();
 337         quphead = (struct quotause *)0;
 338         qcmd = QCMD(Q_GETQUOTA, quotatype);
 339         while ((fs = getfsent())) {
 340                 if (fspath && *fspath && strcmp(fspath, fs->fs_spec) &&
 341                     strcmp(fspath, fs->fs_file))
 342                         continue;
 343                 if (strcmp(fs->fs_vfstype, "ufs"))
 344                         continue;
 345                 if (!hasquota(fs, quotatype, &qfpathname))
 346                         continue;
 347                 qupsize = sizeof(*qup) + strlen(qfpathname);
 348                 if ((qup = (struct quotause *)malloc(qupsize)) == NULL)
 349                         errx(2, "out of memory");
 350                 if (quotactl(fs->fs_file, qcmd, id, &qup->dqblk) != 0) {
 351                         if (errno == EOPNOTSUPP && !warned) {
 352                                 warned++;
 353                 warnx("warning: quotas are not compiled into this kernel");
 354                                 sleep(3);
 355                         }
 356                         if ((fd = open(qfpathname, O_RDONLY)) < 0) {
 357                                 fd = open(qfpathname, O_RDWR|O_CREAT, 0640);
 358                                 if (fd < 0 && errno != ENOENT) {
 359                                         warn("%s", qfpathname);
 360                                         free(qup);
 361                                         continue;
 362                                 }
 363                                 warnx("creating quota file %s", qfpathname);
 364                                 sleep(3);
 365                                 (void) fchown(fd, getuid(),
 366                                     getentry(quotagroup, GRPQUOTA));
 367                                 (void) fchmod(fd, 0640);
 368                         }
 369                         lseek(fd, (long)(id * sizeof(struct dqblk)), L_SET);
 370                         switch (read(fd, &qup->dqblk, sizeof(struct dqblk))) {
 371                         case 0:                 /* EOF */
 372                                 /*
 373                                  * Convert implicit 0 quota (EOF)
 374                                  * into an explicit one (zero'ed dqblk)
 375                                  */
 376                                 bzero((caddr_t)&qup->dqblk,
 377                                     sizeof(struct dqblk));
 378                                 break;
 379
 380                         case sizeof(struct dqblk):      /* OK */
 381                                 break;
 382
 383                         default:                /* ERROR */
 384                                 warn("read error in %s", qfpathname);
 385                                 close(fd);
 386                                 free(qup);
 387                                 continue;
 388                         }
 389                         close(fd);
 390                 }
 391                 strcpy(qup->qfname, qfpathname);
 392                 strcpy(qup->fsname, fs->fs_file);
 393                 if (quphead == NULL)
 394                         quphead = qup;
 395                 else
 396                         quptail->next = qup;
 397                 quptail = qup;
 398                 qup->next = 0;
 399         }
 400         endfsent();
 401         return (quphead);
 402 }
 403
 404 /*
 405  * Store the requested quota information.
 406  */
 407 void
 408 putprivs(id, quotatype, quplist)
 409         long id;
 410         int quotatype;
 411         struct quotause *quplist;
 412 {
 413         register struct quotause *qup;
 414         int qcmd, fd;
 415
 416         qcmd = QCMD(Q_SETQUOTA, quotatype);
 417         for (qup = quplist; qup; qup = qup->next) {
 418                 if (quotactl(qup->fsname, qcmd, id, &qup->dqblk) == 0)
 419                         continue;
 420                 if ((fd = open(qup->qfname, O_WRONLY)) < 0) {
 421                         warn("%s", qup->qfname);
 422                 } else {
 423                         lseek(fd, (long)id * (long)sizeof (struct dqblk), 0);
 424                         if (write(fd, &qup->dqblk, sizeof (struct dqblk)) !=
 425                             sizeof (struct dqblk)) {
 426                                 warn("%s", qup->qfname);
 427                         }
 428                         close(fd);
 429                 }
 430         }
 431 }
 432
 433 /*
 434  * Take a list of priviledges and get it edited.
 435  */
 436 int
 437 editit(tmpf)
 438         char *tmpf;
 439 {
 440         long omask;
 441         int pid, status;
 442
 443         omask = sigblock(sigmask(SIGINT)|sigmask(SIGQUIT)|sigmask(SIGHUP));
 444  top:
 445         if ((pid = fork()) < 0) {
 446
 447                 if (errno == EPROCLIM) {
 448                         warnx("you have too many processes");
 449                         return(0);
 450                 }
 451                 if (errno == EAGAIN) {
 452                         sleep(1);
 453                         goto top;
 454                 }
 455                 warn("fork");
 456                 return (0);
 457         }
 458         if (pid == 0) {
 459                 register const char *ed;
 460
 461                 sigsetmask(omask);
 462                 setgid(getgid());
 463                 setuid(getuid());
 464                 if ((ed = getenv("EDITOR")) == (char *)0)
 465                         ed = _PATH_VI;
 466                 execlp(ed, ed, tmpf, (char *)0);
 467                 err(1, "%s", ed);
 468         }
 469         waitpid(pid, &status, 0);
 470         sigsetmask(omask);
 471         if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
 472                 return (0);
 473         return (1);
 474 }
 475
 476 /*
 477  * Convert a quotause list to an ASCII file.
 478  */
 479 int
 480 writeprivs(quplist, outfd, name, quotatype)
 481         struct quotause *quplist;
 482         int outfd;
 483         char *name;
 484         int quotatype;
 485 {
 486         register struct quotause *qup;
 487         FILE *fd;
 488
 489         ftruncate(outfd, 0);
 490         lseek(outfd, 0, L_SET);
 491         if ((fd = fdopen(dup(outfd), "w")) == NULL)
 492                 err(1, "%s", tmpfil);
 493         fprintf(fd, "Quotas for %s %s:\n", qfextension[quotatype], name);
 494         for (qup = quplist; qup; qup = qup->next) {
 495                 fprintf(fd, "%s: %s %lu, limits (soft = %lu, hard = %lu)\n",
 496                     qup->fsname, "kbytes in use:",
 497                     (unsigned long)(dbtob(qup->dqblk.dqb_curblocks) / 1024),
 498                     (unsigned long)(dbtob(qup->dqblk.dqb_bsoftlimit) / 1024),
 499                     (unsigned long)(dbtob(qup->dqblk.dqb_bhardlimit) / 1024));
 500                 fprintf(fd, "%s %lu, limits (soft = %lu, hard = %lu)\n",
 501                     "\tinodes in use:",
 502                     (unsigned long)qup->dqblk.dqb_curinodes,
 503                     (unsigned long)qup->dqblk.dqb_isoftlimit,
 504                     (unsigned long)qup->dqblk.dqb_ihardlimit);
 505         }
 506         fclose(fd);
 507         return (1);
 508 }
 509
 510 /*
 511  * Merge changes to an ASCII file into a quotause list.
 512  */
 513 int
 514 readprivs(quplist, inname)
 515         struct quotause *quplist;
 516         char *inname;
 517 {
 518         register struct quotause *qup;
 519         FILE *fd;
 520         unsigned long bhardlimit, bsoftlimit, curblocks;
 521         unsigned long ihardlimit, isoftlimit, curinodes;
 522         int cnt;
 523         register char *cp;
 524         struct dqblk dqblk;
 525         char *fsp, line1[BUFSIZ], line2[BUFSIZ];
 526
 527         fd = fopen(inname, "r");
 528         if (fd == NULL) {
 529                 warnx("can't re-read temp file!!");
 530                 return (0);
 531         }
 532         /*
 533          * Discard title line, then read pairs of lines to process.
 534          */
 535         (void) fgets(line1, sizeof (line1), fd);
 536         while (fgets(line1, sizeof (line1), fd) != NULL &&
 537                fgets(line2, sizeof (line2), fd) != NULL) {
 538                 if ((fsp = strtok(line1, " \t:")) == NULL) {
 539                         warnx("%s: bad format", line1);
 540                         return (0);
 541                 }
 542                 if ((cp = strtok((char *)0, "\n")) == NULL) {
 543                         warnx("%s: %s: bad format", fsp, &fsp[strlen(fsp) + 1]);
 544                         return (0);
 545                 }
 546                 cnt = sscanf(cp,
 547                     " kbytes in use: %lu, limits (soft = %lu, hard = %lu)",
 548                     &curblocks, &bsoftlimit, &bhardlimit);
 549                 if (cnt != 3) {
 550                         warnx("%s:%s: bad format", fsp, cp);
 551                         return (0);
 552                 }
 553                 dqblk.dqb_curblocks = btodb((off_t)curblocks * 1024);
 554                 dqblk.dqb_bsoftlimit = btodb((off_t)bsoftlimit * 1024);
 555                 dqblk.dqb_bhardlimit = btodb((off_t)bhardlimit * 1024);
 556                 if ((cp = strtok(line2, "\n")) == NULL) {
 557                         warnx("%s: %s: bad format", fsp, line2);
 558                         return (0);
 559                 }
 560                 cnt = sscanf(cp,
 561                     "\tinodes in use: %lu, limits (soft = %lu, hard = %lu)",
 562                     &curinodes, &isoftlimit, &ihardlimit);
 563                 if (cnt != 3) {
 564                         warnx("%s: %s: bad format", fsp, line2);
 565                         return (0);
 566                 }
 567                 dqblk.dqb_curinodes = curinodes;
 568                 dqblk.dqb_isoftlimit = isoftlimit;
 569                 dqblk.dqb_ihardlimit = ihardlimit;
 570                 for (qup = quplist; qup; qup = qup->next) {
 571                         if (strcmp(fsp, qup->fsname))
 572                                 continue;
 573                         /*
 574                          * Cause time limit to be reset when the quota
 575                          * is next used if previously had no soft limit
 576                          * or were under it, but now have a soft limit
 577                          * and are over it.
 578                          */
 579                         if (dqblk.dqb_bsoftlimit &&
 580                             qup->dqblk.dqb_curblocks >= dqblk.dqb_bsoftlimit &&
 581                             (qup->dqblk.dqb_bsoftlimit == 0 ||
 582                              qup->dqblk.dqb_curblocks <
 583                              qup->dqblk.dqb_bsoftlimit))
 584                                 qup->dqblk.dqb_btime = 0;
 585                         if (dqblk.dqb_isoftlimit &&
 586                             qup->dqblk.dqb_curinodes >= dqblk.dqb_isoftlimit &&
 587                             (qup->dqblk.dqb_isoftlimit == 0 ||
 588                              qup->dqblk.dqb_curinodes <
 589                              qup->dqblk.dqb_isoftlimit))
 590                                 qup->dqblk.dqb_itime = 0;
 591                         qup->dqblk.dqb_bsoftlimit = dqblk.dqb_bsoftlimit;
 592                         qup->dqblk.dqb_bhardlimit = dqblk.dqb_bhardlimit;
 593                         qup->dqblk.dqb_isoftlimit = dqblk.dqb_isoftlimit;
 594                         qup->dqblk.dqb_ihardlimit = dqblk.dqb_ihardlimit;
 595                         qup->flags |= FOUND;
 596                         if (dqblk.dqb_curblocks == qup->dqblk.dqb_curblocks &&
 597                             dqblk.dqb_curinodes == qup->dqblk.dqb_curinodes)
 598                                 break;
 599                         warnx("%s: cannot change current allocation", fsp);
 600                         break;
 601                 }
 602         }
 603         fclose(fd);
 604         /*
 605          * Disable quotas for any filesystems that have not been found.
 606          */
 607         for (qup = quplist; qup; qup = qup->next) {
 608                 if (qup->flags & FOUND) {
 609                         qup->flags &= ~FOUND;
 610                         continue;
 611                 }
 612                 qup->dqblk.dqb_bsoftlimit = 0;
 613                 qup->dqblk.dqb_bhardlimit = 0;
 614                 qup->dqblk.dqb_isoftlimit = 0;
 615                 qup->dqblk.dqb_ihardlimit = 0;
 616         }
 617         return (1);
 618 }
 619
 620 /*
 621  * Convert a quotause list to an ASCII file of grace times.
 622  */
 623 int
 624 writetimes(quplist, outfd, quotatype)
 625         struct quotause *quplist;
 626         int outfd;
 627         int quotatype;
 628 {
 629         register struct quotause *qup;
 630         FILE *fd;
 631
 632         ftruncate(outfd, 0);
 633         lseek(outfd, 0, L_SET);
 634         if ((fd = fdopen(dup(outfd), "w")) == NULL)
 635                 err(1, "%s", tmpfil);
 636         fprintf(fd, "Time units may be: days, hours, minutes, or seconds\n");
 637         fprintf(fd, "Grace period before enforcing soft limits for %ss:\n",
 638             qfextension[quotatype]);
 639         for (qup = quplist; qup; qup = qup->next) {
 640                 fprintf(fd, "%s: block grace period: %s, ",
 641                     qup->fsname, cvtstoa(qup->dqblk.dqb_btime));
 642                 fprintf(fd, "file grace period: %s\n",
 643                     cvtstoa(qup->dqblk.dqb_itime));
 644         }
 645         fclose(fd);
 646         return (1);
 647 }
 648
 649 /*
 650  * Merge changes of grace times in an ASCII file into a quotause list.
 651  */
 652 int
 653 readtimes(quplist, inname)
 654         struct quotause *quplist;
 655         char *inname;
 656 {
 657         register struct quotause *qup;
 658         FILE *fd;
 659         int cnt;
 660         register char *cp;
 661         time_t itime, btime, iseconds, bseconds;
 662         long l_itime, l_btime;
 663         char *fsp, bunits[10], iunits[10], line1[BUFSIZ];
 664
 665         fd = fopen(inname, "r");
 666         if (fd == NULL) {
 667                 warnx("can't re-read temp file!!");
 668                 return (0);
 669         }
 670         /*
 671          * Discard two title lines, then read lines to process.
 672          */
 673         (void) fgets(line1, sizeof (line1), fd);
 674         (void) fgets(line1, sizeof (line1), fd);
 675         while (fgets(line1, sizeof (line1), fd) != NULL) {
 676                 if ((fsp = strtok(line1, " \t:")) == NULL) {
 677                         warnx("%s: bad format", line1);
 678                         return (0);
 679                 }
 680                 if ((cp = strtok((char *)0, "\n")) == NULL) {
 681                         warnx("%s: %s: bad format", fsp, &fsp[strlen(fsp) + 1]);
 682                         return (0);
 683                 }
 684                 cnt = sscanf(cp,
 685                     " block grace period: %ld %s file grace period: %ld %s",
 686                     &l_btime, bunits, &l_itime, iunits);
 687                 if (cnt != 4) {
 688                         warnx("%s:%s: bad format", fsp, cp);
 689                         return (0);
 690                 }
 691                 btime = l_btime;
 692                 itime = l_itime;
 693                 if (cvtatos(btime, bunits, &bseconds) == 0)
 694                         return (0);
 695                 if (cvtatos(itime, iunits, &iseconds) == 0)
 696                         return (0);
 697                 for (qup = quplist; qup; qup = qup->next) {
 698                         if (strcmp(fsp, qup->fsname))
 699                                 continue;
 700                         qup->dqblk.dqb_btime = bseconds;
 701                         qup->dqblk.dqb_itime = iseconds;
 702                         qup->flags |= FOUND;
 703                         break;
 704                 }
 705         }
 706         fclose(fd);
 707         /*
 708          * reset default grace periods for any filesystems
 709          * that have not been found.
 710          */
 711         for (qup = quplist; qup; qup = qup->next) {
 712                 if (qup->flags & FOUND) {
 713                         qup->flags &= ~FOUND;
 714                         continue;
 715                 }
 716                 qup->dqblk.dqb_btime = 0;
 717                 qup->dqblk.dqb_itime = 0;
 718         }
 719         return (1);
 720 }
 721
 722 /*
 723  * Convert seconds to ASCII times.
 724  */
 725 char *
 726 cvtstoa(secs)
 727         time_t secs;
 728 {
 729         static char buf[20];
 730
 731         if (secs % (24 * 60 * 60) == 0) {
 732                 secs /= 24 * 60 * 60;
 733                 sprintf(buf, "%ld day%s", (long)secs, secs == 1 ? "" : "s");
 734         } else if (secs % (60 * 60) == 0) {
 735                 secs /= 60 * 60;
 736                 sprintf(buf, "%ld hour%s", (long)secs, secs == 1 ? "" : "s");
 737         } else if (secs % 60 == 0) {
 738                 secs /= 60;
 739                 sprintf(buf, "%ld minute%s", (long)secs, secs == 1 ? "" : "s");
 740         } else
 741                 sprintf(buf, "%ld second%s", (long)secs, secs == 1 ? "" : "s");
 742         return (buf);
 743 }
 744
 745 /*
 746  * Convert ASCII input times to seconds.
 747  */
 748 int
 749 cvtatos(period, units, seconds)
 750         time_t period;
 751         char *units;
 752         time_t *seconds;
 753 {
 754
 755         if (bcmp(units, "second", 6) == 0)
 756                 *seconds = period;
 757         else if (bcmp(units, "minute", 6) == 0)
 758                 *seconds = period * 60;
 759         else if (bcmp(units, "hour", 4) == 0)
 760                 *seconds = period * 60 * 60;
 761         else if (bcmp(units, "day", 3) == 0)
 762                 *seconds = period * 24 * 60 * 60;
 763         else {
 764                 printf("%s: bad units, specify %s\n", units,
 765                     "days, hours, minutes, or seconds");
 766                 return (0);
 767         }
 768         return (1);
 769 }
 770
 771 /*
 772  * Free a list of quotause structures.
 773  */
 774 void
 775 freeprivs(quplist)
 776         struct quotause *quplist;
 777 {
 778         register struct quotause *qup, *nextqup;
 779
 780         for (qup = quplist; qup; qup = nextqup) {
 781                 nextqup = qup->next;
 782                 free(qup);
 783         }
 784 }
 785
 786 /*
 787  * Check whether a string is completely composed of digits.
 788  */
 789 int
 790 alldigits(s)
 791         register const char *s;
 792 {
 793         register int c;
 794
 795         c = *s++;
 796         do {
 797                 if (!isdigit(c))
 798                         return (0);
 799         } while ((c = *s++));
 800         return (1);
 801 }
 802
 803 /*
 804  * Check to see if a particular quota is to be enabled.
 805  */
 806 int
 807 hasquota(fs, type, qfnamep)
 808         register struct fstab *fs;
 809         int type;
 810         char **qfnamep;
 811 {
 812         register char *opt;
 813         char *cp;
 814         static char initname, usrname[100], grpname[100];
 815         static char buf[BUFSIZ];
 816
 817         if (!initname) {
 818                 sprintf(usrname, "%s%s", qfextension[USRQUOTA], qfname);
 819                 sprintf(grpname, "%s%s", qfextension[GRPQUOTA], qfname);
 820                 initname = 1;
 821         }
 822         strcpy(buf, fs->fs_mntops);
 823         for (opt = strtok(buf, ","); opt; opt = strtok(NULL, ",")) {
 824                 if ((cp = index(opt, '=')))
 825                         *cp++ = '\0';
 826                 if (type == USRQUOTA && strcmp(opt, usrname) == 0)
 827                         break;
 828                 if (type == GRPQUOTA && strcmp(opt, grpname) == 0)
 829                         break;
 830         }
 831         if (!opt)
 832                 return (0);
 833         if (cp) {
 834                 *qfnamep = cp;
 835                 return (1);
 836         }
 837         (void) sprintf(buf, "%s/%s.%s", fs->fs_file, qfname, qfextension[type]);
 838         *qfnamep = buf;
 839         return (1);
 840 }