usr.bin/whereis/whereis.c

   1 /*
   2  * Copyright © 2002, Jörg Wunsch
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions
   6  * are met:
   7  * 1. Redistributions of source code must retain the above copyright
   8  *    notice, this list of conditions and the following disclaimer.
   9  * 2. Redistributions in binary form must reproduce the above copyright
  10  *    notice, this list of conditions and the following disclaimer in the
  11  *    documentation and/or other materials provided with the distribution.
  12  *
  13  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
  14  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  15  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  16  * DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT,
  17  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  18  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  19  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  20  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  21  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
  22  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  23  * POSSIBILITY OF SUCH DAMAGE.
  24  * $FreeBSD: src/usr.bin/whereis/whereis.c,v 1.12 2002/08/22 01:50:51 johan Exp $
  25  */
  26
  27 /*
  28  * 4.3BSD UI-compatible whereis(1) utility.  Rewritten from scratch
  29  * since the original 4.3BSD version suffers legal problems that
  30  * prevent it from being redistributed, and since the 4.4BSD version
  31  * was pretty inferior in functionality.
  32  */
  33
  34 #include <sys/types.h>
  35
  36
  37 #include <sys/stat.h>
  38 #include <sys/sysctl.h>
  39
  40 #include <dirent.h>
  41 #include <err.h>
  42 #include <errno.h>
  43 #include <locale.h>
  44 #include <regex.h>
  45 #include <stdio.h>
  46 #include <stdlib.h>
  47 #include <string.h>
  48 #include <sysexits.h>
  49 #include <unistd.h>
  50
  51 #include "pathnames.h"
  52
  53 #define NO_BIN_FOUND    1
  54 #define NO_MAN_FOUND    2
  55 #define NO_SRC_FOUND    4
  56
  57 typedef const char *ccharp;
  58
  59 int opt_a, opt_b, opt_m, opt_q, opt_s, opt_u, opt_x;
  60 ccharp *bindirs, *mandirs, *sourcedirs;
  61 char **query;
  62
  63 const char *sourcepath = PATH_SOURCES;
  64
  65 char    *colonify(ccharp *);
  66 int      contains(ccharp *, const char *);
  67 void     decolonify(char *, ccharp **, int *);
  68 void     defaults(void);
  69 void     scanopts(int, char **);
  70 void     usage(void);
  71
  72 /*
  73  * Throughout this program, a number of strings are dynamically
  74  * allocated but never freed.  Their memory is written to when
  75  * splitting the strings into string lists which will later be
  76  * processed.  Since it's important that those string lists remain
  77  * valid even after the functions allocating the memory returned,
  78  * those functions cannot free them.  They could be freed only at end
  79  * of main(), which is pretty pointless anyway.
  80  *
  81  * The overall amount of memory to be allocated for processing the
  82  * strings is not expected to exceed a few kilobytes.  For that
  83  * reason, allocation can usually always be assumed to succeed (within
  84  * a virtual memory environment), thus we simply bail out using
  85  * abort(3) in case of an allocation failure.
  86  */
  87
  88 void
  89 usage(void)
  90 {
  91         errx(EX_USAGE,
  92              "usage: whereis [-abmqsux] [-BMS dir... -f] name ...");
  93 }
  94
  95 /*
  96  * Scan options passed to program.
  97  *
  98  * Note that the -B/-M/-S options expect a list of directory
  99  * names that must be terminated with -f.
 100  */
 101 void
 102 scanopts(int argc, char **argv)
 103 {
 104         int c, i;
 105         ccharp **dirlist;
 106
 107         while ((c = getopt(argc, argv, "BMSabfmqsux")) != -1)
 108                 switch (c) {
 109                 case 'B':
 110                         dirlist = &bindirs;
 111                         goto dolist;
 112
 113                 case 'M':
 114                         dirlist = &mandirs;
 115                         goto dolist;
 116
 117                 case 'S':
 118                         dirlist = &sourcedirs;
 119                   dolist:
 120                         i = 0;
 121                         *dirlist = realloc(*dirlist, (i + 1) * sizeof(char *));
 122                         (*dirlist)[i] = NULL;
 123                         while (optind < argc &&
 124                                strcmp(argv[optind], "-f") != 0 &&
 125                                strcmp(argv[optind], "-B") != 0 &&
 126                                strcmp(argv[optind], "-M") != 0 &&
 127                                strcmp(argv[optind], "-S") != 0) {
 128                                 decolonify(argv[optind], dirlist, &i);
 129                                 optind++;
 130                         }
 131                         break;
 132
 133                 case 'a':
 134                         opt_a = 1;
 135                         break;
 136
 137                 case 'b':
 138                         opt_b = 1;
 139                         break;
 140
 141                 case 'f':
 142                         goto breakout;
 143
 144                 case 'm':
 145                         opt_m = 1;
 146                         break;
 147
 148                 case 'q':
 149                         opt_q = 1;
 150                         break;
 151
 152                 case 's':
 153                         opt_s = 1;
 154                         break;
 155
 156                 case 'u':
 157                         opt_u = 1;
 158                         break;
 159
 160                 case 'x':
 161                         opt_x = 1;
 162                         break;
 163
 164                 default:
 165                         usage();
 166                 }
 167 breakout:
 168         if (optind == argc)
 169                 usage();
 170         query = argv + optind;
 171 }
 172
 173 /*
 174  * Find out whether string `s' is contained in list `cpp'.
 175  */
 176 int
 177 contains(ccharp *cpp, const char *s)
 178 {
 179         ccharp cp;
 180
 181         if (cpp == NULL)
 182                 return (0);
 183
 184         while ((cp = *cpp) != NULL) {
 185                 if (strcmp(cp, s) == 0)
 186                         return (1);
 187                 cpp++;
 188         }
 189         return (0);
 190 }
 191
 192 /*
 193  * Split string `s' at colons, and pass it to the string list pointed
 194  * to by `cppp' (which has `*ip' elements).  Note that the original
 195  * string is modified by replacing the colon with a NUL byte.  The
 196  * partial string is only added if it has a length greater than 0, and
 197  * if it's not already contained in the string list.
 198  */
 199 void
 200 decolonify(char *s, ccharp **cppp, int *ip)
 201 {
 202         char *cp;
 203
 204         while ((cp = strchr(s, ':')), *s != '\0') {
 205                 if (cp)
 206                         *cp = '\0';
 207                 if (strlen(s) && !contains(*cppp, s)) {
 208                         *cppp = realloc(*cppp, (*ip + 2) * sizeof(char *));
 209                         if (cppp == NULL)
 210                                 abort();
 211                         (*cppp)[*ip] = s;
 212                         (*cppp)[*ip + 1] = NULL;
 213                         (*ip)++;
 214                 }
 215                 if (cp)
 216                         s = cp + 1;
 217                 else
 218                         break;
 219         }
 220 }
 221
 222 /*
 223  * Join string list `cpp' into a colon-separated string.
 224  */
 225 char *
 226 colonify(ccharp *cpp)
 227 {
 228         size_t s;
 229         char *cp;
 230         int i;
 231
 232         if (cpp == NULL)
 233                 return (0);
 234
 235         for (s = 0, i = 0; cpp[i] != NULL; i++)
 236                 s += strlen(cpp[i]) + 1;
 237         if ((cp = malloc(s + 1)) == NULL)
 238                 abort();
 239         for (i = 0, *cp = '\0'; cpp[i] != NULL; i++) {
 240                 strcat(cp, cpp[i]);
 241                 strcat(cp, ":");
 242         }
 243         cp[s - 1] = '\0';               /* eliminate last colon */
 244
 245         return (cp);
 246 }
 247
 248 /*
 249  * Provide defaults for all options and directory lists.
 250  */
 251 void
 252 defaults(void)
 253 {
 254         size_t s;
 255         char *b, buf[BUFSIZ], *cp;
 256         int nele;
 257         FILE *p;
 258         DIR *dir;
 259         struct stat sb;
 260         struct dirent *dirp;
 261
 262         /* default to -bms if none has been specified */
 263         if (!opt_b && !opt_m && !opt_s)
 264                 opt_b = opt_m = opt_s = 1;
 265
 266         /* -b defaults to default path + /usr/libexec +
 267          * /usr/games + user's path */
 268         if (!bindirs) {
 269                 if (sysctlbyname("user.cs_path", NULL, &s, NULL, 0) == -1)
 270                         err(EX_OSERR, "sysctlbyname(\"user.cs_path\")");
 271                 if ((b = malloc(s + 1)) == NULL)
 272                         abort();
 273                 if (sysctlbyname("user.cs_path", b, &s, NULL, 0) == -1)
 274                         err(EX_OSERR, "sysctlbyname(\"user.cs_path\")");
 275                 nele = 0;
 276                 decolonify(b, &bindirs, &nele);
 277                 bindirs = realloc(bindirs, (nele + 3) * sizeof(char *));
 278                 if (bindirs == NULL)
 279                         abort();
 280                 bindirs[nele++] = PATH_LIBEXEC;
 281                 bindirs[nele++] = PATH_GAMES;
 282                 bindirs[nele] = NULL;
 283                 if ((cp = getenv("PATH")) != NULL) {
 284                         /* don't destroy the original environment... */
 285                         if ((b = malloc(strlen(cp) + 1)) == NULL)
 286                                 abort();
 287                         strcpy(b, cp);
 288                         decolonify(b, &bindirs, &nele);
 289                 }
 290         }
 291
 292         /* -m defaults to $(manpath) */
 293         if (!mandirs) {
 294                 if ((p = popen(MANPATHCMD, "r")) == NULL)
 295                         err(EX_OSERR, "cannot execute manpath command");
 296                 if (fgets(buf, BUFSIZ - 1, p) == NULL ||
 297                     pclose(p))
 298                         err(EX_OSERR, "error processing manpath results");
 299                 if ((b = strchr(buf, '\n')) != NULL)
 300                         *b = '\0';
 301                 if ((b = malloc(strlen(buf) + 1)) == NULL)
 302                         abort();
 303                 strcpy(b, buf);
 304                 nele = 0;
 305                 decolonify(b, &mandirs, &nele);
 306         }
 307
 308         /*
 309          * -s defaults to precompiled list, plus subdirs of /usr/dports and
 310          * /usr/pkgsrc
 311          */
 312         if (!sourcedirs) {
 313                 if ((b = malloc(strlen(sourcepath) + 1)) == NULL)
 314                         abort();
 315                 strcpy(b, sourcepath);
 316                 nele = 0;
 317                 decolonify(b, &sourcedirs, &nele);
 318
 319                 if (stat(PATH_DPORTS, &sb) == -1) {
 320                         if (errno != ENOENT)
 321                                 err(EX_OSERR, "stat(" PATH_DPORTS ")");
 322                 } else {
 323                         if ((sb.st_mode & S_IFMT) != S_IFDIR)
 324                                 /* /usr/dports is not a directory, ignore */
 325                                 return;
 326                         if (access(PATH_DPORTS, R_OK | X_OK) != 0)
 327                                 return;
 328                         if ((dir = opendir(PATH_DPORTS)) == NULL)
 329                                 err(EX_OSERR, "opendir" PATH_DPORTS ")");
 330                         while ((dirp = readdir(dir)) != NULL) {
 331                                 if (dirp->d_name[0] == '.')
 332                                         /* ignore dot entries */
 333                                         continue;
 334                                 b = malloc(sizeof PATH_DPORTS + 1 +
 335                                     dirp->d_namlen);
 336                                 if (b == NULL)
 337                                         abort();
 338                                 strcpy(b, PATH_DPORTS);
 339                                 strcat(b, "/");
 340                                 strcat(b, dirp->d_name);
 341                                 if (stat(b, &sb) == -1 ||
 342                                     (sb.st_mode & S_IFMT) != S_IFDIR ||
 343                                     access(b, R_OK | X_OK) != 0) {
 344                                         free(b);
 345                                         continue;
 346                                 }
 347                                 sourcedirs = realloc(sourcedirs,
 348                                     (nele + 2) * sizeof(char *));
 349                                 if (sourcedirs == NULL)
 350                                         abort();
 351                                 sourcedirs[nele++] = b;
 352                                 sourcedirs[nele] = NULL;
 353                         }
 354                         closedir(dir);
 355                 }
 356                 if (stat(PATH_PKGSRC, &sb) == -1) {
 357                         if (errno == ENOENT)
 358                                 /* no /usr/pkgsrc, we are done */
 359                                 return;
 360                         err(EX_OSERR, "stat(" PATH_PKGSRC ")");
 361                 }
 362                 if ((sb.st_mode & S_IFMT) != S_IFDIR)
 363                         /* /usr/pkgsrc is not a directory, ignore */
 364                         return;
 365                 if (access(PATH_PKGSRC, R_OK | X_OK) != 0)
 366                         return;
 367                 if ((dir = opendir(PATH_PKGSRC)) == NULL)
 368                         err(EX_OSERR, "opendir" PATH_PKGSRC ")");
 369                 while ((dirp = readdir(dir)) != NULL) {
 370                         if (dirp->d_name[0] == '.' ||
 371                             strcmp(dirp->d_name, "CVS") == 0)
 372                                 /* ignore dot entries and CVS subdir */
 373                                 continue;
 374                         if ((b = malloc(sizeof PATH_PKGSRC + 1 + dirp->d_namlen))
 375                             == NULL)
 376                                 abort();
 377                         strcpy(b, PATH_PKGSRC);
 378                         strcat(b, "/");
 379                         strcat(b, dirp->d_name);
 380                         if (stat(b, &sb) == -1 ||
 381                             (sb.st_mode & S_IFMT) != S_IFDIR ||
 382                             access(b, R_OK | X_OK) != 0) {
 383                                 free(b);
 384                                 continue;
 385                         }
 386                         sourcedirs = realloc(sourcedirs,
 387                                              (nele + 2) * sizeof(char *));
 388                         if (sourcedirs == NULL)
 389                                 abort();
 390                         sourcedirs[nele++] = b;
 391                         sourcedirs[nele] = NULL;
 392                 }
 393                 closedir(dir);
 394         }
 395 }
 396
 397 int
 398 main(int argc, char **argv)
 399 {
 400         int unusual, i, printed;
 401         char *bin, buf[BUFSIZ], *cp, *cp2, *man, *name, *src;
 402         ccharp *dp;
 403         size_t nlen, olen, s;
 404         struct stat sb;
 405         regex_t re, re2;
 406         regmatch_t matches[2];
 407         regoff_t rlen;
 408         FILE *p;
 409
 410         setlocale(LC_ALL, "");
 411         scanopts(argc, argv);
 412         defaults();
 413
 414         if (mandirs == NULL)
 415                 opt_m = 0;
 416         if (bindirs == NULL)
 417                 opt_b = 0;
 418         if (sourcedirs == NULL)
 419                 opt_s = 0;
 420         if (opt_m + opt_b + opt_s == 0)
 421                 errx(EX_DATAERR, "no directories to search");
 422
 423         if (opt_m) {
 424                 if (setenv("MANPATH", colonify(mandirs), 1) == -1)
 425                         err(1, "setenv: cannot set MANPATH=%s", colonify(mandirs));
 426                 if ((i = regcomp(&re, MANWHEREISMATCH, REG_EXTENDED)) != 0) {
 427                         regerror(i, &re, buf, BUFSIZ - 1);
 428                         errx(EX_UNAVAILABLE, "regcomp(%s) failed: %s",
 429                              MANWHEREISMATCH, buf);
 430                 }
 431         }
 432
 433         for (; (name = *query) != NULL; query++) {
 434                 /* strip leading path name component */
 435                 if ((cp = strrchr(name, '/')) != NULL)
 436                         name = cp + 1;
 437                 /* strip SCCS or RCS suffix/prefix */
 438                 if (strlen(name) > 2 && strncmp(name, "s.", 2) == 0)
 439                         name += 2;
 440                 if ((s = strlen(name)) > 2 && strcmp(name + s - 2, ",v") == 0)
 441                         name[s - 2] = '\0';
 442                 /* compression suffix */
 443                 s = strlen(name);
 444                 if (s > 2 &&
 445                     (strcmp(name + s - 2, ".z") == 0 ||
 446                      strcmp(name + s - 2, ".Z") == 0))
 447                         name[s - 2] = '\0';
 448                 else if (s > 3 &&
 449                          strcmp(name + s - 3, ".gz") == 0)
 450                         name[s - 3] = '\0';
 451                 else if (s > 4 &&
 452                          strcmp(name + s - 4, ".bz2") == 0)
 453                         name[s - 4] = '\0';
 454
 455                 unusual = 0;
 456                 bin = man = src = NULL;
 457                 s = strlen(name);
 458
 459                 if (opt_b) {
 460                         /*
 461                          * Binaries have to match exactly, and must be regular
 462                          * executable files.
 463                          */
 464                         unusual = unusual | NO_BIN_FOUND;
 465                         for (dp = bindirs; *dp != NULL; dp++) {
 466                                 cp = malloc(strlen(*dp) + 1 + s + 1);
 467                                 if (cp == NULL)
 468                                         abort();
 469                                 strcpy(cp, *dp);
 470                                 strcat(cp, "/");
 471                                 strcat(cp, name);
 472                                 if (stat(cp, &sb) == 0 &&
 473                                     (sb.st_mode & S_IFMT) == S_IFREG &&
 474                                     (sb.st_mode & (S_IXUSR | S_IXGRP | S_IXOTH))
 475                                     != 0) {
 476                                         unusual = unusual & ~NO_BIN_FOUND;
 477                                         if (bin == NULL) {
 478                                                 bin = strdup(cp);
 479                                         } else {
 480                                                 olen = strlen(bin);
 481                                                 nlen = strlen(cp);
 482                                                 bin = realloc(bin,
 483                                                               olen + nlen + 2);
 484                                                 if (bin == NULL)
 485                                                         abort();
 486                                                 strcat(bin, " ");
 487                                                 strcat(bin, cp);
 488                                         }
 489                                         if (!opt_a) {
 490                                                 free(cp);
 491                                                 break;
 492                                         }
 493                                 }
 494                                 free(cp);
 495                         }
 496                 }
 497
 498                 if (opt_m) {
 499                         /*
 500                          * Ask the man command to perform the search for us.
 501                          */
 502                         unusual = unusual | NO_MAN_FOUND;
 503                         if (opt_a)
 504                                 cp = malloc(sizeof MANWHEREISALLCMD - 2 + s);
 505                         else
 506                                 cp = malloc(sizeof MANWHEREISCMD - 2 + s);
 507
 508                         if (cp == NULL)
 509                                 abort();
 510
 511                         if (opt_a)
 512                                 sprintf(cp, MANWHEREISALLCMD, name);
 513                         else
 514                                 sprintf(cp, MANWHEREISCMD, name);
 515
 516                         if ((p = popen(cp, "r")) != NULL) {
 517
 518                                 while (fgets(buf, BUFSIZ - 1, p) != NULL) {
 519                                         unusual = unusual & ~NO_MAN_FOUND;
 520
 521                                         if ((cp2 = strchr(buf, '\n')) != NULL)
 522                                                 *cp2 = '\0';
 523                                         if (regexec(&re, buf, 2,
 524                                                     matches, 0) == 0 &&
 525                                             (rlen = matches[1].rm_eo -
 526                                              matches[1].rm_so) > 0) {
 527                                                 /*
 528                                                  * man -w found formated
 529                                                  * page, need to pick up
 530                                                  * source page name.
 531                                                  */
 532                                                 cp2 = malloc(rlen + 1);
 533                                                 if (cp2 == NULL)
 534                                                         abort();
 535                                                 memcpy(cp2,
 536                                                        buf + matches[1].rm_so,
 537                                                        rlen);
 538                                                 cp2[rlen] = '\0';
 539                                         } else {
 540                                                 /*
 541                                                  * man -w found plain source
 542                                                  * page, use it.
 543                                                  */
 544                                                 s = strlen(buf);
 545                                                 cp2 = malloc(s + 1);
 546                                                 if (cp2 == NULL)
 547                                                         abort();
 548                                                 strcpy(cp2, buf);
 549                                         }
 550
 551                                         if (man == NULL) {
 552                                                 man = strdup(cp2);
 553                                         } else {
 554                                                 olen = strlen(man);
 555                                                 nlen = strlen(cp2);
 556                                                 man = realloc(man,
 557                                                               olen + nlen + 2);
 558                                                 if (man == NULL)
 559                                                         abort();
 560                                                 strcat(man, " ");
 561                                                 strcat(man, cp2);
 562                                         }
 563
 564                                         free(cp2);
 565
 566                                         if (!opt_a)
 567                                                 break;
 568                                 }
 569                                 pclose(p);
 570                                 free(cp);
 571                         }
 572                 }
 573
 574                 if (opt_s) {
 575                         /*
 576                          * Sources match if a subdir with the exact
 577                          * name is found.
 578                          */
 579                         unusual = unusual | NO_SRC_FOUND;
 580                         for (dp = sourcedirs; *dp != NULL; dp++) {
 581                                 cp = malloc(strlen(*dp) + 1 + s + 1);
 582                                 if (cp == NULL)
 583                                         abort();
 584                                 strcpy(cp, *dp);
 585                                 strcat(cp, "/");
 586                                 strcat(cp, name);
 587                                 if (stat(cp, &sb) == 0 &&
 588                                     (sb.st_mode & S_IFMT) == S_IFDIR) {
 589                                         unusual = unusual & ~NO_SRC_FOUND;
 590                                         if (src == NULL) {
 591                                                 src = strdup(cp);
 592                                         } else {
 593                                                 olen = strlen(src);
 594                                                 nlen = strlen(cp);
 595                                                 src = realloc(src,
 596                                                               olen + nlen + 2);
 597                                                 if (src == NULL)
 598                                                         abort();
 599                                                 strcat(src, " ");
 600                                                 strcat(src, cp);
 601                                         }
 602                                         if (!opt_a) {
 603                                                 free(cp);
 604                                                 break;
 605                                         }
 606                                 }
 607                                 free(cp);
 608                         }
 609                         /*
 610                          * If still not found, ask locate to search it
 611                          * for us.  This will find sources for things
 612                          * like lpr that are well hidden in the
 613                          * /usr/src tree, but takes a lot longer.
 614                          * Thus, option -x (`expensive') prevents this
 615                          * search.
 616                          *
 617                          * Do only match locate output that starts
 618                          * with one of our source directories, and at
 619                          * least one further level of subdirectories.
 620                          */
 621                         if (opt_x || (src && !opt_a))
 622                                 goto done_sources;
 623
 624                         cp = malloc(sizeof LOCATECMD - 2 + s);
 625                         if (cp == NULL)
 626                                 abort();
 627                         sprintf(cp, LOCATECMD, name);
 628                         if ((p = popen(cp, "r")) == NULL)
 629                                 goto done_sources;
 630                         while ((src == NULL || opt_a) &&
 631                                (fgets(buf, BUFSIZ - 1, p)) != NULL) {
 632                                 if ((cp2 = strchr(buf, '\n')) != NULL)
 633                                         *cp2 = '\0';
 634                                 for (dp = sourcedirs;
 635                                      (src == NULL || opt_a) && *dp != NULL;
 636                                      dp++) {
 637                                         cp2 = malloc(strlen(*dp) + 9);
 638                                         if (cp2 == NULL)
 639                                                 abort();
 640                                         strcpy(cp2, "^");
 641                                         strcat(cp2, *dp);
 642                                         strcat(cp2, "/[^/]+/");
 643                                         if ((i = regcomp(&re2, cp2,
 644                                                          REG_EXTENDED|REG_NOSUB))
 645                                             != 0) {
 646                                                 regerror(i, &re, buf,
 647                                                          BUFSIZ - 1);
 648                                                 errx(EX_UNAVAILABLE,
 649                                                      "regcomp(%s) failed: %s",
 650                                                      cp2, buf);
 651                                         }
 652                                         free(cp2);
 653                                         if (regexec(&re2, buf, 0, NULL, 0)
 654                                             == 0) {
 655                                                 unusual = unusual &
 656                                                           ~NO_SRC_FOUND;
 657                                                 if (src == NULL) {
 658                                                         src = strdup(buf);
 659                                                 } else {
 660                                                         olen = strlen(src);
 661                                                         nlen = strlen(buf);
 662                                                         src = realloc(src,
 663                                                                       olen +
 664                                                                       nlen + 2);
 665                                                         if (src == NULL)
 666                                                                 abort();
 667                                                         strcat(src, " ");
 668                                                         strcat(src, buf);
 669                                                 }
 670                                         }
 671                                         regfree(&re2);
 672                                 }
 673                         }
 674                         pclose(p);
 675                         free(cp);
 676                 }
 677 done_sources:
 678
 679                 if (opt_u && !unusual)
 680                         continue;
 681
 682                 printed = 0;
 683                 if (!opt_q) {
 684                         printf("%s:", name);
 685                         printed++;
 686                 }
 687                 if (bin) {
 688                         if (printed++)
 689                                 putchar(' ');
 690                         fputs(bin, stdout);
 691                 }
 692                 if (man) {
 693                         if (printed++)
 694                                 putchar(' ');
 695                         fputs(man, stdout);
 696                 }
 697                 if (src) {
 698                         if (printed++)
 699                                 putchar(' ');
 700                         fputs(src, stdout);
 701                 }
 702                 if (printed)
 703                         putchar('\n');
 704         }
 705
 706         if (opt_m)
 707                 regfree(&re);
 708
 709         return (0);
 710 }