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