usr.bin/whereis/whereis.c

   1 /*-
   2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
   3  *
   4  * Copyright © 2002, Jörg Wunsch
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  *
  15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
  16  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  17  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  18  * DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT,
  19  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  20  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  21  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  23  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
  24  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  25  * POSSIBILITY OF SUCH DAMAGE.
  26  */
  27
  28 /*
  29  * 4.3BSD UI-compatible whereis(1) utility.  Rewritten from scratch
  30  * since the original 4.3BSD version suffers legal problems that
  31  * prevent it from being redistributed, and since the 4.4BSD version
  32  * was pretty inferior in functionality.
  33  */
  34
  35 #include <sys/types.h>
  36
  37 __FBSDID("$FreeBSD$");
  38
  39 #include <sys/stat.h>
  40 #include <sys/sysctl.h>
  41
  42 #include <dirent.h>
  43 #include <err.h>
  44 #include <errno.h>
  45 #include <locale.h>
  46 #include <regex.h>
  47 #include <stdio.h>
  48 #include <stdlib.h>
  49 #include <string.h>
  50 #include <sysexits.h>
  51 #include <unistd.h>
  52
  53 #include "pathnames.h"
  54
  55 #define NO_BIN_FOUND    1
  56 #define NO_MAN_FOUND    2
  57 #define NO_SRC_FOUND    4
  58
  59 typedef const char *ccharp;
  60
  61 static int opt_a, opt_b, opt_m, opt_q, opt_s, opt_u, opt_x;
  62 static ccharp *bindirs, *mandirs, *sourcedirs;
  63 static char **query;
  64
  65 static const char *sourcepath = PATH_SOURCES;
  66
  67 static char     *colonify(ccharp *);
  68 static int       contains(ccharp *, const char *);
  69 static void      decolonify(char *, ccharp **, int *);
  70 static void      defaults(void);
  71 static void      scanopts(int, char **);
  72 static void      usage(void);
  73
  74 /*
  75  * Throughout this program, a number of strings are dynamically
  76  * allocated but never freed.  Their memory is written to when
  77  * splitting the strings into string lists which will later be
  78  * processed.  Since it's important that those string lists remain
  79  * valid even after the functions allocating the memory returned,
  80  * those functions cannot free them.  They could be freed only at end
  81  * of main(), which is pretty pointless anyway.
  82  *
  83  * The overall amount of memory to be allocated for processing the
  84  * strings is not expected to exceed a few kilobytes.  For that
  85  * reason, allocation can usually always be assumed to succeed (within
  86  * a virtual memory environment), thus we simply bail out using
  87  * abort(3) in case of an allocation failure.
  88  */
  89
  90 static void
  91 usage(void)
  92 {
  93         (void)fprintf(stderr,
  94              "usage: whereis [-abmqsux] [-BMS dir ... -f] program ...\n");
  95         exit(EX_USAGE);
  96 }
  97
  98 /*
  99  * Scan options passed to program.
 100  *
 101  * Note that the -B/-M/-S options expect a list of directory
 102  * names that must be terminated with -f.
 103  */
 104 static void
 105 scanopts(int argc, char **argv)
 106 {
 107         int c, i;
 108         ccharp **dirlist;
 109
 110         while ((c = getopt(argc, argv, "BMSabfmqsux")) != -1)
 111                 switch (c) {
 112                 case 'B':
 113                         dirlist = &bindirs;
 114                         goto dolist;
 115
 116                 case 'M':
 117                         dirlist = &mandirs;
 118                         goto dolist;
 119
 120                 case 'S':
 121                         dirlist = &sourcedirs;
 122                   dolist:
 123                         i = 0;
 124                         *dirlist = realloc(*dirlist, (i + 1) * sizeof(char *));
 125                         (*dirlist)[i] = NULL;
 126                         while (optind < argc &&
 127                                strcmp(argv[optind], "-f") != 0 &&
 128                                strcmp(argv[optind], "-B") != 0 &&
 129                                strcmp(argv[optind], "-M") != 0 &&
 130                                strcmp(argv[optind], "-S") != 0) {
 131                                 decolonify(argv[optind], dirlist, &i);
 132                                 optind++;
 133                         }
 134                         break;
 135
 136                 case 'a':
 137                         opt_a = 1;
 138                         break;
 139
 140                 case 'b':
 141                         opt_b = 1;
 142                         break;
 143
 144                 case 'f':
 145                         goto breakout;
 146
 147                 case 'm':
 148                         opt_m = 1;
 149                         break;
 150
 151                 case 'q':
 152                         opt_q = 1;
 153                         break;
 154
 155                 case 's':
 156                         opt_s = 1;
 157                         break;
 158
 159                 case 'u':
 160                         opt_u = 1;
 161                         break;
 162
 163                 case 'x':
 164                         opt_x = 1;
 165                         break;
 166
 167                 default:
 168                         usage();
 169                 }
 170   breakout:
 171         if (optind == argc)
 172                 usage();
 173         query = argv + optind;
 174 }
 175
 176 /*
 177  * Find out whether string `s' is contained in list `cpp'.
 178  */
 179 static int
 180 contains(ccharp *cpp, const char *s)
 181 {
 182         ccharp cp;
 183
 184         if (cpp == NULL)
 185                 return (0);
 186
 187         while ((cp = *cpp) != NULL) {
 188                 if (strcmp(cp, s) == 0)
 189                         return (1);
 190                 cpp++;
 191         }
 192         return (0);
 193 }
 194
 195 /*
 196  * Split string `s' at colons, and pass it to the string list pointed
 197  * to by `cppp' (which has `*ip' elements).  Note that the original
 198  * string is modified by replacing the colon with a NUL byte.  The
 199  * partial string is only added if it has a length greater than 0, and
 200  * if it's not already contained in the string list.
 201  */
 202 static void
 203 decolonify(char *s, ccharp **cppp, int *ip)
 204 {
 205         char *cp;
 206
 207         while ((cp = strchr(s, ':')), *s != '\0') {
 208                 if (cp)
 209                         *cp = '\0';
 210                 if (strlen(s) && !contains(*cppp, s)) {
 211                         *cppp = realloc(*cppp, (*ip + 2) * sizeof(char *));
 212                         if (*cppp == NULL)
 213                                 abort();
 214                         (*cppp)[*ip] = s;
 215                         (*cppp)[*ip + 1] = NULL;
 216                         (*ip)++;
 217                 }
 218                 if (cp)
 219                         s = cp + 1;
 220                 else
 221                         break;
 222         }
 223 }
 224
 225 /*
 226  * Join string list `cpp' into a colon-separated string.
 227  */
 228 static char *
 229 colonify(ccharp *cpp)
 230 {
 231         size_t s;
 232         char *cp;
 233         int i;
 234
 235         if (cpp == NULL)
 236                 return (0);
 237
 238         for (s = 0, i = 0; cpp[i] != NULL; i++)
 239                 s += strlen(cpp[i]) + 1;
 240         if ((cp = malloc(s + 1)) == NULL)
 241                 abort();
 242         for (i = 0, *cp = '\0'; cpp[i] != NULL; i++) {
 243                 strcat(cp, cpp[i]);
 244                 strcat(cp, ":");
 245         }
 246         cp[s - 1] = '\0';               /* eliminate last colon */
 247
 248         return (cp);
 249 }
 250
 251 /*
 252  * Provide defaults for all options and directory lists.
 253  */
 254 static void
 255 defaults(void)
 256 {
 257         size_t s;
 258         char *b, buf[BUFSIZ], *cp;
 259         int nele;
 260         FILE *p;
 261         DIR *dir;
 262         struct stat sb;
 263         struct dirent *dirp;
 264
 265         /* default to -bms if none has been specified */
 266         if (!opt_b && !opt_m && !opt_s)
 267                 opt_b = opt_m = opt_s = 1;
 268
 269         /* -b defaults to default path + /usr/libexec +
 270          * user's path */
 271         if (!bindirs) {
 272                 if (sysctlbyname("user.cs_path", (void *)NULL, &s,
 273                                  (void *)NULL, 0) == -1)
 274                         err(EX_OSERR, "sysctlbyname(\"user.cs_path\")");
 275                 if ((b = malloc(s + 1)) == NULL)
 276                         abort();
 277                 if (sysctlbyname("user.cs_path", b, &s, (void *)NULL, 0) == -1)
 278                         err(EX_OSERR, "sysctlbyname(\"user.cs_path\")");
 279                 nele = 0;
 280                 decolonify(b, &bindirs, &nele);
 281                 bindirs = realloc(bindirs, (nele + 2) * sizeof(char *));
 282                 if (bindirs == NULL)
 283                         abort();
 284                 bindirs[nele++] = PATH_LIBEXEC;
 285                 bindirs[nele] = NULL;
 286                 if ((cp = getenv("PATH")) != NULL) {
 287                         /* don't destroy the original environment... */
 288                         b = strdup(cp);
 289                         if (b == NULL)
 290                                 abort();
 291                         decolonify(b, &bindirs, &nele);
 292                 }
 293         }
 294
 295         /* -m defaults to $(manpath) */
 296         if (!mandirs) {
 297                 if ((p = popen(MANPATHCMD, "r")) == NULL)
 298                         err(EX_OSERR, "cannot execute manpath command");
 299                 if (fgets(buf, BUFSIZ - 1, p) == NULL ||
 300                     pclose(p))
 301                         err(EX_OSERR, "error processing manpath results");
 302                 if ((b = strchr(buf, '\n')) != NULL)
 303                         *b = '\0';
 304                 b = strdup(buf);
 305                 if (b == NULL)
 306                         abort();
 307                 nele = 0;
 308                 decolonify(b, &mandirs, &nele);
 309         }
 310
 311         /* -s defaults to precompiled list, plus subdirs of /usr/ports */
 312         if (!sourcedirs) {
 313                 b = strdup(sourcepath);
 314                 if (b == NULL)
 315                         abort();
 316                 nele = 0;
 317                 decolonify(b, &sourcedirs, &nele);
 318
 319                 if (stat(PATH_PORTS, &sb) == -1) {
 320                         if (errno == ENOENT)
 321                                 /* no /usr/ports, we are done */
 322                                 return;
 323                         err(EX_OSERR, "stat(" PATH_PORTS ")");
 324                 }
 325                 if ((sb.st_mode & S_IFMT) != S_IFDIR)
 326                         /* /usr/ports is not a directory, ignore */
 327                         return;
 328                 if (access(PATH_PORTS, R_OK | X_OK) != 0)
 329                         return;
 330                 if ((dir = opendir(PATH_PORTS)) == NULL)
 331                         err(EX_OSERR, "opendir" PATH_PORTS ")");
 332                 while ((dirp = readdir(dir)) != NULL) {
 333                         /*
 334                          * Not everything below PATH_PORTS is of
 335                          * interest.  First, all dot files and
 336                          * directories (e. g. .snap) can be ignored.
 337                          * Also, all subdirectories starting with a
 338                          * capital letter are not going to be
 339                          * examined, as they are used for internal
 340                          * purposes (Mk, Tools, ...).  This also
 341                          * matches a possible CVS subdirectory.
 342                          * Finally, the distfiles subdirectory is also
 343                          * special, and should not be considered to
 344                          * avoid false matches.
 345                          */
 346                         if (dirp->d_name[0] == '.' ||
 347                             /*
 348                              * isupper() not used on purpose: the
 349                              * check is supposed to default to the C
 350                              * locale instead of the current user's
 351                              * locale.
 352                              */
 353                             (dirp->d_name[0] >= 'A' && dirp->d_name[0] <= 'Z') ||
 354                             strcmp(dirp->d_name, "distfiles") == 0)
 355                                 continue;
 356                         if ((b = malloc(sizeof PATH_PORTS + 1 + dirp->d_namlen))
 357                             == NULL)
 358                                 abort();
 359                         strcpy(b, PATH_PORTS);
 360                         strcat(b, "/");
 361                         strcat(b, dirp->d_name);
 362                         if (stat(b, &sb) == -1 ||
 363                             (sb.st_mode & S_IFMT) != S_IFDIR ||
 364                             access(b, R_OK | X_OK) != 0) {
 365                                 free(b);
 366                                 continue;
 367                         }
 368                         sourcedirs = realloc(sourcedirs,
 369                                              (nele + 2) * sizeof(char *));
 370                         if (sourcedirs == NULL)
 371                                 abort();
 372                         sourcedirs[nele++] = b;
 373                         sourcedirs[nele] = NULL;
 374                 }
 375                 closedir(dir);
 376         }
 377 }
 378
 379 int
 380 main(int argc, char **argv)
 381 {
 382         int unusual, i, printed;
 383         char *bin, buf[BUFSIZ], *cp, *cp2, *man, *name, *src;
 384         ccharp *dp;
 385         size_t nlen, olen, s;
 386         struct stat sb;
 387         regex_t re, re2;
 388         regmatch_t matches[2];
 389         regoff_t rlen;
 390         FILE *p;
 391
 392         setlocale(LC_ALL, "");
 393
 394         scanopts(argc, argv);
 395         defaults();
 396
 397         if (mandirs == NULL)
 398                 opt_m = 0;
 399         if (bindirs == NULL)
 400                 opt_b = 0;
 401         if (sourcedirs == NULL)
 402                 opt_s = 0;
 403         if (opt_m + opt_b + opt_s == 0)
 404                 errx(EX_DATAERR, "no directories to search");
 405
 406         if (opt_m) {
 407                 setenv("MANPATH", colonify(mandirs), 1);
 408                 if ((i = regcomp(&re, MANWHEREISMATCH, REG_EXTENDED)) != 0) {
 409                         regerror(i, &re, buf, BUFSIZ - 1);
 410                         errx(EX_UNAVAILABLE, "regcomp(%s) failed: %s",
 411                              MANWHEREISMATCH, buf);
 412                 }
 413         }
 414
 415         for (; (name = *query) != NULL; query++) {
 416                 /* strip leading path name component */
 417                 if ((cp = strrchr(name, '/')) != NULL)
 418                         name = cp + 1;
 419                 /* strip SCCS or RCS suffix/prefix */
 420                 if (strlen(name) > 2 && strncmp(name, "s.", 2) == 0)
 421                         name += 2;
 422                 if ((s = strlen(name)) > 2 && strcmp(name + s - 2, ",v") == 0)
 423                         name[s - 2] = '\0';
 424                 /* compression suffix */
 425                 s = strlen(name);
 426                 if (s > 2 &&
 427                     (strcmp(name + s - 2, ".z") == 0 ||
 428                      strcmp(name + s - 2, ".Z") == 0))
 429                         name[s - 2] = '\0';
 430                 else if (s > 3 &&
 431                          strcmp(name + s - 3, ".gz") == 0)
 432                         name[s - 3] = '\0';
 433                 else if (s > 4 &&
 434                          strcmp(name + s - 4, ".bz2") == 0)
 435                         name[s - 4] = '\0';
 436
 437                 unusual = 0;
 438                 bin = man = src = NULL;
 439                 s = strlen(name);
 440
 441                 if (opt_b) {
 442                         /*
 443                          * Binaries have to match exactly, and must be regular
 444                          * executable files.
 445                          */
 446                         unusual = unusual | NO_BIN_FOUND;
 447                         for (dp = bindirs; *dp != NULL; dp++) {
 448                                 cp = malloc(strlen(*dp) + 1 + s + 1);
 449                                 if (cp == NULL)
 450                                         abort();
 451                                 strcpy(cp, *dp);
 452                                 strcat(cp, "/");
 453                                 strcat(cp, name);
 454                                 if (stat(cp, &sb) == 0 &&
 455                                     (sb.st_mode & S_IFMT) == S_IFREG &&
 456                                     (sb.st_mode & (S_IXUSR | S_IXGRP | S_IXOTH))
 457                                     != 0) {
 458                                         unusual = unusual & ~NO_BIN_FOUND;
 459                                         if (bin == NULL) {
 460                                                 bin = strdup(cp);
 461                                         } else {
 462                                                 olen = strlen(bin);
 463                                                 nlen = strlen(cp);
 464                                                 bin = realloc(bin,
 465                                                               olen + nlen + 2);
 466                                                 if (bin == NULL)
 467                                                         abort();
 468                                                 strcat(bin, " ");
 469                                                 strcat(bin, cp);
 470                                         }
 471                                         if (!opt_a) {
 472                                                 free(cp);
 473                                                 break;
 474                                         }
 475                                 }
 476                                 free(cp);
 477                         }
 478                 }
 479
 480                 if (opt_m) {
 481                         /*
 482                          * Ask the man command to perform the search for us.
 483                          */
 484                         unusual = unusual | NO_MAN_FOUND;
 485                         if (opt_a)
 486                                 cp = malloc(sizeof MANWHEREISALLCMD - 2 + s);
 487                         else
 488                                 cp = malloc(sizeof MANWHEREISCMD - 2 + s);
 489
 490                         if (cp == NULL)
 491                                 abort();
 492
 493                         if (opt_a)
 494                                 sprintf(cp, MANWHEREISALLCMD, name);
 495                         else
 496                                 sprintf(cp, MANWHEREISCMD, name);
 497
 498                         if ((p = popen(cp, "r")) != NULL) {
 499
 500                                 while (fgets(buf, BUFSIZ - 1, p) != NULL) {
 501                                         unusual = unusual & ~NO_MAN_FOUND;
 502
 503                                         if ((cp2 = strchr(buf, '\n')) != NULL)
 504                                                 *cp2 = '\0';
 505                                         if (regexec(&re, buf, 2,
 506                                                     matches, 0) == 0 &&
 507                                             (rlen = matches[1].rm_eo -
 508                                              matches[1].rm_so) > 0) {
 509                                                 /*
 510                                                  * man -w found formatted
 511                                                  * page, need to pick up
 512                                                  * source page name.
 513                                                  */
 514                                                 cp2 = malloc(rlen + 1);
 515                                                 if (cp2 == NULL)
 516                                                         abort();
 517                                                 memcpy(cp2,
 518                                                        buf + matches[1].rm_so,
 519                                                        rlen);
 520                                                 cp2[rlen] = '\0';
 521                                         } else {
 522                                                 /*
 523                                                  * man -w found plain source
 524                                                  * page, use it.
 525                                                  */
 526                                                 cp2 = strdup(buf);
 527                                                 if (cp2 == NULL)
 528                                                         abort();
 529                                         }
 530
 531                                         if (man == NULL) {
 532                                                 man = strdup(cp2);
 533                                         } else {
 534                                                 olen = strlen(man);
 535                                                 nlen = strlen(cp2);
 536                                                 man = realloc(man,
 537                                                               olen + nlen + 2);
 538                                                 if (man == NULL)
 539                                                         abort();
 540                                                 strcat(man, " ");
 541                                                 strcat(man, cp2);
 542                                         }
 543
 544                                         free(cp2);
 545
 546                                         if (!opt_a)
 547                                                 break;
 548                                 }
 549                                 pclose(p);
 550                                 free(cp);
 551                         }
 552                 }
 553
 554                 if (opt_s) {
 555                         /*
 556                          * Sources match if a subdir with the exact
 557                          * name is found.
 558                          */
 559                         unusual = unusual | NO_SRC_FOUND;
 560                         for (dp = sourcedirs; *dp != NULL; dp++) {
 561                                 cp = malloc(strlen(*dp) + 1 + s + 1);
 562                                 if (cp == NULL)
 563                                         abort();
 564                                 strcpy(cp, *dp);
 565                                 strcat(cp, "/");
 566                                 strcat(cp, name);
 567                                 if (stat(cp, &sb) == 0 &&
 568                                     (sb.st_mode & S_IFMT) == S_IFDIR) {
 569                                         unusual = unusual & ~NO_SRC_FOUND;
 570                                         if (src == NULL) {
 571                                                 src = strdup(cp);
 572                                         } else {
 573                                                 olen = strlen(src);
 574                                                 nlen = strlen(cp);
 575                                                 src = realloc(src,
 576                                                               olen + nlen + 2);
 577                                                 if (src == NULL)
 578                                                         abort();
 579                                                 strcat(src, " ");
 580                                                 strcat(src, cp);
 581                                         }
 582                                         if (!opt_a) {
 583                                                 free(cp);
 584                                                 break;
 585                                         }
 586                                 }
 587                                 free(cp);
 588                         }
 589                         /*
 590                          * If still not found, ask locate to search it
 591                          * for us.  This will find sources for things
 592                          * like lpr that are well hidden in the
 593                          * /usr/src tree, but takes a lot longer.
 594                          * Thus, option -x (`expensive') prevents this
 595                          * search.
 596                          *
 597                          * Do only match locate output that starts
 598                          * with one of our source directories, and at
 599                          * least one further level of subdirectories.
 600                          */
 601                         if (opt_x || (src && !opt_a))
 602                                 goto done_sources;
 603
 604                         cp = malloc(sizeof LOCATECMD - 2 + s);
 605                         if (cp == NULL)
 606                                 abort();
 607                         sprintf(cp, LOCATECMD, name);
 608                         if ((p = popen(cp, "r")) == NULL)
 609                                 goto done_sources;
 610                         while ((src == NULL || opt_a) &&
 611                                (fgets(buf, BUFSIZ - 1, p)) != NULL) {
 612                                 if ((cp2 = strchr(buf, '\n')) != NULL)
 613                                         *cp2 = '\0';
 614                                 for (dp = sourcedirs;
 615                                      (src == NULL || opt_a) && *dp != NULL;
 616                                      dp++) {
 617                                         cp2 = malloc(strlen(*dp) + 9);
 618                                         if (cp2 == NULL)
 619                                                 abort();
 620                                         strcpy(cp2, "^");
 621                                         strcat(cp2, *dp);
 622                                         strcat(cp2, "/[^/]+/");
 623                                         if ((i = regcomp(&re2, cp2,
 624                                                          REG_EXTENDED|REG_NOSUB))
 625                                             != 0) {
 626                                                 regerror(i, &re, buf,
 627                                                          BUFSIZ - 1);
 628                                                 errx(EX_UNAVAILABLE,
 629                                                      "regcomp(%s) failed: %s",
 630                                                      cp2, buf);
 631                                         }
 632                                         free(cp2);
 633                                         if (regexec(&re2, buf, 0,
 634                                                     (regmatch_t *)NULL, 0)
 635                                             == 0) {
 636                                                 unusual = unusual &
 637                                                           ~NO_SRC_FOUND;
 638                                                 if (src == NULL) {
 639                                                         src = strdup(buf);
 640                                                 } else {
 641                                                         olen = strlen(src);
 642                                                         nlen = strlen(buf);
 643                                                         src = realloc(src,
 644                                                                       olen +
 645                                                                       nlen + 2);
 646                                                         if (src == NULL)
 647                                                                 abort();
 648                                                         strcat(src, " ");
 649                                                         strcat(src, buf);
 650                                                 }
 651                                         }
 652                                         regfree(&re2);
 653                                 }
 654                         }
 655                         pclose(p);
 656                         free(cp);
 657                 }
 658           done_sources:
 659
 660                 if (opt_u && !unusual)
 661                         continue;
 662
 663                 printed = 0;
 664                 if (!opt_q) {
 665                         printf("%s:", name);
 666                         printed++;
 667                 }
 668                 if (bin) {
 669                         if (printed++)
 670                                 putchar(' ');
 671                         fputs(bin, stdout);
 672                 }
 673                 if (man) {
 674                         if (printed++)
 675                                 putchar(' ');
 676                         fputs(man, stdout);
 677                 }
 678                 if (src) {
 679                         if (printed++)
 680                                 putchar(' ');
 681                         fputs(src, stdout);
 682                 }
 683                 if (printed)
 684                         putchar('\n');
 685         }
 686
 687         if (opt_m)
 688                 regfree(&re);
 689
 690         return (0);
 691 }