usr.bin/quota/quota.c

   1 /*
   2  * Copyright (c) 1980, 1990, 1993
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * This code is derived from software contributed to Berkeley by
   6  * Robert Elz at The University of Melbourne.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  * 3. All advertising materials mentioning features or use of this software
  17  *    must display the following acknowledgement:
  18  *      This product includes software developed by the University of
  19  *      California, Berkeley and its contributors.
  20  * 4. Neither the name of the University nor the names of its contributors
  21  *    may be used to endorse or promote products derived from this software
  22  *    without specific prior written permission.
  23  *
  24  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  25  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  26  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  27  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  28  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  29  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  30  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  31  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  32  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  33  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  34  * SUCH DAMAGE.
  35  */
  36
  37 #ifndef lint
  38 static const char copyright[] =
  39 "@(#) Copyright (c) 1980, 1990, 1993\n\
  40         The Regents of the University of California.  All rights reserved.\n";
  41 #endif
  42
  43 #ifndef lint
  44 static const char sccsid[] = "from: @(#)quota.c 8.1 (Berkeley) 6/6/93";
  45 #endif /* not lint */
  46
  47 /*
  48  * Disk quota reporting program.
  49  */
  50 #include <sys/cdefs.h>
  51 __FBSDID("$FreeBSD$");
  52
  53 #include <sys/param.h>
  54 #include <sys/types.h>
  55 #include <sys/file.h>
  56 #include <sys/stat.h>
  57 #include <sys/mount.h>
  58 #include <sys/socket.h>
  59
  60 #include <rpc/rpc.h>
  61 #include <rpc/pmap_prot.h>
  62 #include <rpcsvc/rquota.h>
  63
  64 #include <ufs/ufs/quota.h>
  65
  66 #include <ctype.h>
  67 #include <err.h>
  68 #include <fstab.h>
  69 #include <grp.h>
  70 #include <netdb.h>
  71 #include <pwd.h>
  72 #include <stdio.h>
  73 #include <stdlib.h>
  74 #include <string.h>
  75 #include <unistd.h>
  76
  77 const char *qfname = QUOTAFILENAME;
  78 const char *qfextension[] = INITQFNAMES;
  79
  80 struct quotause {
  81         struct  quotause *next;
  82         long    flags;
  83         struct  dqblk dqblk;
  84         char    fsname[MAXPATHLEN + 1];
  85 };
  86 #define FOUND   0x01
  87
  88 static const char *timeprt(time_t seconds);
  89 static struct quotause *getprivs(long id, int quotatype);
  90 static void usage(void);
  91 static void showuid(u_long uid);
  92 static void showgid(u_long gid);
  93 static void showusrname(char *name);
  94 static void showgrpname(char *name);
  95 static void showquotas(int type, u_long id, const char *name);
  96 static void heading(int type, u_long id, const char *name, const char *tag);
  97 static int ufshasquota(struct fstab *fs, int type, char **qfnamep);
  98 static int getufsquota(struct fstab *fs, struct quotause *qup, long id,
  99         int quotatype);
 100 static int getnfsquota(struct statfs *fst, struct quotause *qup, long id,
 101         int quotatype);
 102 static int callaurpc(char *host, int prognum, int versnum, int procnum,
 103         xdrproc_t inproc, char *in, xdrproc_t outproc, char *out);
 104 static int alldigits(char *s);
 105
 106 int     lflag;
 107 int     qflag;
 108 int     vflag;
 109
 110 int
 111 main(int argc, char *argv[])
 112 {
 113         int ngroups;
 114         gid_t mygid, gidset[NGROUPS];
 115         int i, gflag = 0, uflag = 0;
 116         char ch;
 117
 118         while ((ch = getopt(argc, argv, "glquv")) != -1) {
 119                 switch(ch) {
 120                 case 'g':
 121                         gflag++;
 122                         break;
 123                 case 'l':
 124                         lflag++;
 125                         break;
 126                 case 'q':
 127                         qflag++;
 128                         break;
 129                 case 'u':
 130                         uflag++;
 131                         break;
 132                 case 'v':
 133                         vflag++;
 134                         break;
 135                 default:
 136                         usage();
 137                 }
 138         }
 139         argc -= optind;
 140         argv += optind;
 141         if (!uflag && !gflag)
 142                 uflag++;
 143         if (argc == 0) {
 144                 if (uflag)
 145                         showuid(getuid());
 146                 if (gflag) {
 147                         mygid = getgid();
 148                         ngroups = getgroups(NGROUPS, gidset);
 149                         if (ngroups < 0)
 150                                 err(1, "getgroups");
 151                         showgid(mygid);
 152                         for (i = 0; i < ngroups; i++)
 153                                 if (gidset[i] != mygid)
 154                                         showgid(gidset[i]);
 155                 }
 156                 return(0);
 157         }
 158         if (uflag && gflag)
 159                 usage();
 160         if (uflag) {
 161                 for (; argc > 0; argc--, argv++) {
 162                         if (alldigits(*argv))
 163                                 showuid(atoi(*argv));
 164                         else
 165                                 showusrname(*argv);
 166                 }
 167                 return(0);
 168         }
 169         if (gflag) {
 170                 for (; argc > 0; argc--, argv++) {
 171                         if (alldigits(*argv))
 172                                 showgid(atoi(*argv));
 173                         else
 174                                 showgrpname(*argv);
 175                 }
 176         }
 177         return(0);
 178 }
 179
 180 static void
 181 usage(void)
 182 {
 183
 184         fprintf(stderr, "%s\n%s\n%s\n",
 185             "usage: quota [-glu] [-v | -q]",
 186             "       quota [-lu] [-v | -q] user ...",
 187             "       quota -g [-l] [-v | -q] group ...");
 188         exit(1);
 189 }
 190
 191 /*
 192  * Print out quotas for a specified user identifier.
 193  */
 194 static void
 195 showuid(u_long uid)
 196 {
 197         struct passwd *pwd = getpwuid(uid);
 198         const char *name;
 199
 200         if (pwd == NULL)
 201                 name = "(no account)";
 202         else
 203                 name = pwd->pw_name;
 204         showquotas(USRQUOTA, uid, name);
 205 }
 206
 207 /*
 208  * Print out quotas for a specifed user name.
 209  */
 210 static void
 211 showusrname(char *name)
 212 {
 213         struct passwd *pwd = getpwnam(name);
 214
 215         if (pwd == NULL) {
 216                 warnx("%s: unknown user", name);
 217                 return;
 218         }
 219         showquotas(USRQUOTA, pwd->pw_uid, name);
 220 }
 221
 222 /*
 223  * Print out quotas for a specified group identifier.
 224  */
 225 static void
 226 showgid(u_long gid)
 227 {
 228         struct group *grp = getgrgid(gid);
 229         const char *name;
 230
 231         if (grp == NULL)
 232                 name = "(no entry)";
 233         else
 234                 name = grp->gr_name;
 235         showquotas(GRPQUOTA, gid, name);
 236 }
 237
 238 /*
 239  * Print out quotas for a specifed group name.
 240  */
 241 static void
 242 showgrpname(char *name)
 243 {
 244         struct group *grp = getgrnam(name);
 245
 246         if (grp == NULL) {
 247                 warnx("%s: unknown group", name);
 248                 return;
 249         }
 250         showquotas(GRPQUOTA, grp->gr_gid, name);
 251 }
 252
 253 static void
 254 showquotas(int type, u_long id, const char *name)
 255 {
 256         struct quotause *qup;
 257         struct quotause *quplist;
 258         const char *msgi, *msgb;
 259         const char *nam;
 260         int lines = 0;
 261         static time_t now;
 262
 263         if (now == 0)
 264                 time(&now);
 265         quplist = getprivs(id, type);
 266         for (qup = quplist; qup; qup = qup->next) {
 267                 if (!vflag &&
 268                     qup->dqblk.dqb_isoftlimit == 0 &&
 269                     qup->dqblk.dqb_ihardlimit == 0 &&
 270                     qup->dqblk.dqb_bsoftlimit == 0 &&
 271                     qup->dqblk.dqb_bhardlimit == 0)
 272                         continue;
 273                 msgi = (char *)0;
 274                 if (qup->dqblk.dqb_ihardlimit &&
 275                     qup->dqblk.dqb_curinodes >= qup->dqblk.dqb_ihardlimit)
 276                         msgi = "File limit reached on";
 277                 else if (qup->dqblk.dqb_isoftlimit &&
 278                     qup->dqblk.dqb_curinodes >= qup->dqblk.dqb_isoftlimit) {
 279                         if (qup->dqblk.dqb_itime > now)
 280                                 msgi = "In file grace period on";
 281                         else
 282                                 msgi = "Over file quota on";
 283                 }
 284                 msgb = (char *)0;
 285                 if (qup->dqblk.dqb_bhardlimit &&
 286                     qup->dqblk.dqb_curblocks >= qup->dqblk.dqb_bhardlimit)
 287                         msgb = "Block limit reached on";
 288                 else if (qup->dqblk.dqb_bsoftlimit &&
 289                     qup->dqblk.dqb_curblocks >= qup->dqblk.dqb_bsoftlimit) {
 290                         if (qup->dqblk.dqb_btime > now)
 291                                 msgb = "In block grace period on";
 292                         else
 293                                 msgb = "Over block quota on";
 294                 }
 295                 if (qflag) {
 296                         if ((msgi != (char *)0 || msgb != (char *)0) &&
 297                             lines++ == 0)
 298                                 heading(type, id, name, "");
 299                         if (msgi != (char *)0)
 300                                 printf("\t%s %s\n", msgi, qup->fsname);
 301                         if (msgb != (char *)0)
 302                                 printf("\t%s %s\n", msgb, qup->fsname);
 303                         continue;
 304                 }
 305                 if (vflag ||
 306                     qup->dqblk.dqb_curblocks ||
 307                     qup->dqblk.dqb_curinodes) {
 308                         if (lines++ == 0)
 309                                 heading(type, id, name, "");
 310                         nam = qup->fsname;
 311                         if (strlen(qup->fsname) > 15) {
 312                                 printf("%s\n", qup->fsname);
 313                                 nam = "";
 314                         }
 315                         printf("%15s%8lu%c%7lu%8lu%8s"
 316                                 , nam
 317                                 , (u_long) (dbtob(qup->dqblk.dqb_curblocks)
 318                                             / 1024)
 319                                 , (msgb == (char *)0) ? ' ' : '*'
 320                                 , (u_long) (dbtob(qup->dqblk.dqb_bsoftlimit)
 321                                             / 1024)
 322                                 , (u_long) (dbtob(qup->dqblk.dqb_bhardlimit)
 323                                             / 1024)
 324                                 , (msgb == (char *)0) ? ""
 325                                     :timeprt(qup->dqblk.dqb_btime));
 326                         printf("%8lu%c%7lu%8lu%8s\n"
 327                                 , (u_long)qup->dqblk.dqb_curinodes
 328                                 , (msgi == (char *)0) ? ' ' : '*'
 329                                 , (u_long)qup->dqblk.dqb_isoftlimit
 330                                 , (u_long)qup->dqblk.dqb_ihardlimit
 331                                 , (msgi == (char *)0) ? ""
 332                                     : timeprt(qup->dqblk.dqb_itime)
 333                         );
 334                         continue;
 335                 }
 336         }
 337         if (!qflag && lines == 0)
 338                 heading(type, id, name, "none");
 339 }
 340
 341 static void
 342 heading(int type, u_long id, const char *name, const char *tag)
 343 {
 344
 345         printf("Disk quotas for %s %s (%cid %lu): %s\n", qfextension[type],
 346             name, *qfextension[type], id, tag);
 347         if (!qflag && tag[0] == '\0') {
 348                 printf("%15s%8s %7s%8s%8s%8s %7s%8s%8s\n"
 349                         , "Filesystem"
 350                         , "usage"
 351                         , "quota"
 352                         , "limit"
 353                         , "grace"
 354                         , "files"
 355                         , "quota"
 356                         , "limit"
 357                         , "grace"
 358                 );
 359         }
 360 }
 361
 362 /*
 363  * Calculate the grace period and return a printable string for it.
 364  */
 365 static const char *
 366 timeprt(time_t seconds)
 367 {
 368         time_t hours, minutes;
 369         static char buf[20];
 370         static time_t now;
 371
 372         if (now == 0)
 373                 time(&now);
 374         if (now > seconds)
 375                 return ("none");
 376         seconds -= now;
 377         minutes = (seconds + 30) / 60;
 378         hours = (minutes + 30) / 60;
 379         if (hours >= 36) {
 380                 sprintf(buf, "%lddays", ((long)hours + 12) / 24);
 381                 return (buf);
 382         }
 383         if (minutes >= 60) {
 384                 sprintf(buf, "%2ld:%ld", (long)minutes / 60,
 385                     (long)minutes % 60);
 386                 return (buf);
 387         }
 388         sprintf(buf, "%2ld", (long)minutes);
 389         return (buf);
 390 }
 391
 392 /*
 393  * Collect the requested quota information.
 394  */
 395 static struct quotause *
 396 getprivs(long id, int quotatype)
 397 {
 398         struct quotause *qup, *quptail = NULL;
 399         struct fstab *fs;
 400         struct quotause *quphead;
 401         struct statfs *fst;
 402         int nfst, i;
 403
 404         qup = quphead = (struct quotause *)0;
 405
 406         nfst = getmntinfo(&fst, MNT_NOWAIT);
 407         if (nfst == 0)
 408                 errx(2, "no filesystems mounted!");
 409         setfsent();
 410         for (i=0; i<nfst; i++) {
 411                 if (qup == NULL) {
 412                         if ((qup = (struct quotause *)malloc(sizeof *qup))
 413                             == NULL)
 414                                 errx(2, "out of memory");
 415                 }
 416                 if (strcmp(fst[i].f_fstypename, "nfs") == 0) {
 417                         if (lflag)
 418                                 continue;
 419                         if (getnfsquota(&fst[i], qup, id, quotatype)
 420                             == 0)
 421                                 continue;
 422                 } else if (strcmp(fst[i].f_fstypename, "ufs") == 0) {
 423                         /*
 424                          * XXX
 425                          * UFS filesystems must be in /etc/fstab, and must
 426                          * indicate that they have quotas on (?!) This is quite
 427                          * unlike SunOS where quotas can be enabled/disabled
 428                          * on a filesystem independent of /etc/fstab, and it
 429                          * will still print quotas for them.
 430                          */
 431                         if ((fs = getfsspec(fst[i].f_mntfromname)) == NULL)
 432                                 continue;
 433                         if (getufsquota(fs, qup, id, quotatype) == 0)
 434                                 continue;
 435                 } else
 436                         continue;
 437                 strcpy(qup->fsname, fst[i].f_mntonname);
 438                 if (quphead == NULL)
 439                         quphead = qup;
 440                 else
 441                         quptail->next = qup;
 442                 quptail = qup;
 443                 quptail->next = 0;
 444                 qup = NULL;
 445         }
 446         if (qup)
 447                 free(qup);
 448         endfsent();
 449         return (quphead);
 450 }
 451
 452 /*
 453  * Check to see if a particular quota is to be enabled.
 454  */
 455 static int
 456 ufshasquota(struct fstab *fs, int type, char **qfnamep)
 457 {
 458         static char initname, usrname[100], grpname[100];
 459         static char buf[BUFSIZ];
 460         char *opt, *cp;
 461
 462         if (!initname) {
 463                 sprintf(usrname, "%s%s", qfextension[USRQUOTA], qfname);
 464                 sprintf(grpname, "%s%s", qfextension[GRPQUOTA], qfname);
 465                 initname = 1;
 466         }
 467         strcpy(buf, fs->fs_mntops);
 468         for (opt = strtok(buf, ","); opt; opt = strtok(NULL, ",")) {
 469                 if ((cp = index(opt, '=')))
 470                         *cp++ = '\0';
 471                 if (type == USRQUOTA && strcmp(opt, usrname) == 0)
 472                         break;
 473                 if (type == GRPQUOTA && strcmp(opt, grpname) == 0)
 474                         break;
 475         }
 476         if (!opt)
 477                 return (0);
 478         if (cp) {
 479                 *qfnamep = cp;
 480                 return (1);
 481         }
 482         (void) sprintf(buf, "%s/%s.%s", fs->fs_file, qfname, qfextension[type]);
 483         *qfnamep = buf;
 484         return (1);
 485 }
 486
 487 static int
 488 getufsquota(struct fstab *fs, struct quotause *qup, long id, int quotatype)
 489 {
 490         char *qfpathname;
 491         int fd, qcmd;
 492
 493         qcmd = QCMD(Q_GETQUOTA, quotatype);
 494         if (!ufshasquota(fs, quotatype, &qfpathname))
 495                 return (0);
 496
 497         if (quotactl(fs->fs_file, qcmd, id, (char *)&qup->dqblk) != 0) {
 498                 if ((fd = open(qfpathname, O_RDONLY)) < 0) {
 499                         warn("%s", qfpathname);
 500                         return (0);
 501                 }
 502                 (void) lseek(fd, (off_t)(id * sizeof(struct dqblk)), L_SET);
 503                 switch (read(fd, &qup->dqblk, sizeof(struct dqblk))) {
 504                 case 0:                         /* EOF */
 505                         /*
 506                          * Convert implicit 0 quota (EOF)
 507                          * into an explicit one (zero'ed dqblk)
 508                          */
 509                         bzero((caddr_t)&qup->dqblk, sizeof(struct dqblk));
 510                         break;
 511                 case sizeof(struct dqblk):      /* OK */
 512                         break;
 513                 default:                /* ERROR */
 514                         warn("read error: %s", qfpathname);
 515                         close(fd);
 516                         return (0);
 517                 }
 518                 close(fd);
 519         }
 520         return (1);
 521 }
 522
 523 static int
 524 getnfsquota(struct statfs *fst, struct quotause *qup, long id, int quotatype)
 525 {
 526         struct getquota_args gq_args;
 527         struct getquota_rslt gq_rslt;
 528         struct dqblk *dqp = &qup->dqblk;
 529         struct timeval tv;
 530         char *cp;
 531
 532         if (fst->f_flags & MNT_LOCAL)
 533                 return (0);
 534
 535         /*
 536          * rpc.rquotad does not support group quotas
 537          */
 538         if (quotatype != USRQUOTA)
 539                 return (0);
 540
 541         /*
 542          * must be some form of "hostname:/path"
 543          */
 544         cp = strchr(fst->f_mntfromname, ':');
 545         if (cp == NULL) {
 546                 warnx("cannot find hostname for %s", fst->f_mntfromname);
 547                 return (0);
 548         }
 549
 550         *cp = '\0';
 551         if (*(cp+1) != '/') {
 552                 *cp = ':';
 553                 return (0);
 554         }
 555
 556         /* Avoid attempting the RPC for special amd(8) filesystems. */
 557         if (strncmp(fst->f_mntfromname, "pid", 3) == 0 &&
 558             strchr(fst->f_mntfromname, '@') != NULL) {
 559                 *cp = ':';
 560                 return (0);
 561         }
 562
 563         gq_args.gqa_pathp = cp + 1;
 564         gq_args.gqa_uid = id;
 565         if (callaurpc(fst->f_mntfromname, RQUOTAPROG, RQUOTAVERS,
 566             RQUOTAPROC_GETQUOTA, (xdrproc_t)xdr_getquota_args, (char *)&gq_args,
 567             (xdrproc_t)xdr_getquota_rslt, (char *)&gq_rslt) != 0) {
 568                 *cp = ':';
 569                 return (0);
 570         }
 571
 572         switch (gq_rslt.status) {
 573         case Q_NOQUOTA:
 574                 break;
 575         case Q_EPERM:
 576                 warnx("quota permission error, host: %s",
 577                         fst->f_mntfromname);
 578                 break;
 579         case Q_OK:
 580                 gettimeofday(&tv, NULL);
 581                         /* blocks*/
 582                 dqp->dqb_bhardlimit =
 583                     gq_rslt.getquota_rslt_u.gqr_rquota.rq_bhardlimit *
 584                     (gq_rslt.getquota_rslt_u.gqr_rquota.rq_bsize / DEV_BSIZE);
 585                 dqp->dqb_bsoftlimit =
 586                     gq_rslt.getquota_rslt_u.gqr_rquota.rq_bsoftlimit *
 587                     (gq_rslt.getquota_rslt_u.gqr_rquota.rq_bsize / DEV_BSIZE);
 588                 dqp->dqb_curblocks =
 589                     gq_rslt.getquota_rslt_u.gqr_rquota.rq_curblocks *
 590                     (gq_rslt.getquota_rslt_u.gqr_rquota.rq_bsize / DEV_BSIZE);
 591                         /* inodes */
 592                 dqp->dqb_ihardlimit =
 593                         gq_rslt.getquota_rslt_u.gqr_rquota.rq_fhardlimit;
 594                 dqp->dqb_isoftlimit =
 595                         gq_rslt.getquota_rslt_u.gqr_rquota.rq_fsoftlimit;
 596                 dqp->dqb_curinodes =
 597                         gq_rslt.getquota_rslt_u.gqr_rquota.rq_curfiles;
 598                         /* grace times */
 599                 dqp->dqb_btime =
 600                     tv.tv_sec + gq_rslt.getquota_rslt_u.gqr_rquota.rq_btimeleft;
 601                 dqp->dqb_itime =
 602                     tv.tv_sec + gq_rslt.getquota_rslt_u.gqr_rquota.rq_ftimeleft;
 603                 *cp = ':';
 604                 return (1);
 605         default:
 606                 warnx("bad rpc result, host: %s", fst->f_mntfromname);
 607                 break;
 608         }
 609         *cp = ':';
 610         return (0);
 611 }
 612
 613 static int
 614 callaurpc(char *host, int prognum, int versnum, int procnum,
 615     xdrproc_t inproc, char *in, xdrproc_t outproc, char *out)
 616 {
 617         struct sockaddr_in server_addr;
 618         enum clnt_stat clnt_stat;
 619         struct hostent *hp;
 620         struct timeval timeout, tottimeout;
 621
 622         CLIENT *client = NULL;
 623         int sock = RPC_ANYSOCK;
 624
 625         if ((hp = gethostbyname(host)) == NULL)
 626                 return ((int) RPC_UNKNOWNHOST);
 627         timeout.tv_usec = 0;
 628         timeout.tv_sec = 6;
 629         bcopy(hp->h_addr, &server_addr.sin_addr,
 630                         MIN(hp->h_length,(int)sizeof(server_addr.sin_addr)));
 631         server_addr.sin_family = AF_INET;
 632         server_addr.sin_port =  0;
 633
 634         if ((client = clntudp_create(&server_addr, prognum,
 635             versnum, timeout, &sock)) == NULL)
 636                 return ((int) rpc_createerr.cf_stat);
 637
 638         client->cl_auth = authunix_create_default();
 639         tottimeout.tv_sec = 25;
 640         tottimeout.tv_usec = 0;
 641         clnt_stat = clnt_call(client, procnum, inproc, in,
 642             outproc, out, tottimeout);
 643
 644         return ((int) clnt_stat);
 645 }
 646
 647 static int
 648 alldigits(char *s)
 649 {
 650         int c;
 651
 652         c = *s++;
 653         do {
 654                 if (!isdigit(c))
 655                         return (0);
 656         } while ((c = *s++));
 657         return (1);
 658 }