1 /*- 2 * Copyright (c) 1991, 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 * Kenneth Almquist. 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 * @(#)exec.c 8.4 (Berkeley) 6/8/95 37 * $FreeBSD: src/bin/sh/exec.c,v 1.30 2007/01/11 00:19:00 stefanf Exp $ 38 * $DragonFly: src/bin/sh/exec.c,v 1.11 2007/01/14 18:14:39 pavalos Exp $ 39 */ 40 41 #include <sys/types.h> 42 #include <sys/stat.h> 43 #include <unistd.h> 44 #include <fcntl.h> 45 #include <errno.h> 46 #include <stdlib.h> 47 48 /* 49 * When commands are first encountered, they are entered in a hash table. 50 * This ensures that a full path search will not have to be done for them 51 * on each invocation. 52 * 53 * We should investigate converting to a linear search, even though that 54 * would make the command name "hash" a misnomer. 55 */ 56 57 #include "shell.h" 58 #include "main.h" 59 #include "nodes.h" 60 #include "parser.h" 61 #include "redir.h" 62 #include "eval.h" 63 #include "exec.h" 64 #include "builtins.h" 65 #include "var.h" 66 #include "options.h" 67 #include "input.h" 68 #include "output.h" 69 #include "syntax.h" 70 #include "memalloc.h" 71 #include "error.h" 72 #include "init.h" 73 #include "mystring.h" 74 #include "show.h" 75 #include "jobs.h" 76 #include "alias.h" 77 78 79 #define CMDTABLESIZE 31 /* should be prime */ 80 #define ARB 1 /* actual size determined at run time */ 81 82 83 84 struct tblentry { 85 struct tblentry *next; /* next entry in hash chain */ 86 union param param; /* definition of builtin function */ 87 int special; /* flag for special builtin commands */ 88 short cmdtype; /* index identifying command */ 89 char rehash; /* if set, cd done since entry created */ 90 char cmdname[ARB]; /* name of command */ 91 }; 92 93 94 STATIC struct tblentry *cmdtable[CMDTABLESIZE]; 95 STATIC int builtinloc = -1; /* index in path of %builtin, or -1 */ 96 int exerrno = 0; /* Last exec error */ 97 98 99 STATIC void tryexec(char *, char **, char **); 100 STATIC void printentry(struct tblentry *, int); 101 STATIC struct tblentry *cmdlookup(char *, int); 102 STATIC void delete_cmd_entry(void); 103 104 extern const char *const parsekwd[]; 105 106 /* 107 * Exec a program. Never returns. If you change this routine, you may 108 * have to change the find_command routine as well. 109 */ 110 111 void 112 shellexec(char **argv, char **envp, const char *path, int idx) 113 { 114 char *cmdname; 115 int e; 116 117 if (strchr(argv[0], '/') != NULL) { 118 tryexec(argv[0], argv, envp); 119 e = errno; 120 } else { 121 e = ENOENT; 122 while ((cmdname = padvance(&path, argv[0])) != NULL) { 123 if (--idx < 0 && pathopt == NULL) { 124 tryexec(cmdname, argv, envp); 125 if (errno != ENOENT && errno != ENOTDIR) 126 e = errno; 127 } 128 stunalloc(cmdname); 129 } 130 } 131 132 /* Map to POSIX errors */ 133 switch (e) { 134 case EACCES: 135 exerrno = 126; 136 break; 137 case ENOENT: 138 exerrno = 127; 139 break; 140 default: 141 exerrno = 2; 142 break; 143 } 144 if (e == ENOENT || e == ENOTDIR) 145 exerror(EXEXEC, "%s: not found", argv[0]); 146 exerror(EXEXEC, "%s: %s", argv[0], strerror(e)); 147 } 148 149 150 STATIC void 151 tryexec(char *cmd, char **argv, char **envp) 152 { 153 int e; 154 155 execve(cmd, argv, envp); 156 e = errno; 157 if (e == ENOEXEC) { 158 initshellproc(); 159 setinputfile(cmd, 0); 160 commandname = arg0 = savestr(argv[0]); 161 setparam(argv + 1); 162 exraise(EXSHELLPROC); 163 /*NOTREACHED*/ 164 } 165 errno = e; 166 } 167 168 /* 169 * Do a path search. The variable path (passed by reference) should be 170 * set to the start of the path before the first call; padvance will update 171 * this value as it proceeds. Successive calls to padvance will return 172 * the possible path expansions in sequence. If an option (indicated by 173 * a percent sign) appears in the path entry then the global variable 174 * pathopt will be set to point to it; otherwise pathopt will be set to 175 * NULL. 176 */ 177 178 const char *pathopt; 179 180 char * 181 padvance(const char **path, const char *name) 182 { 183 const char *p; 184 char *q; 185 const char *start; 186 int len; 187 188 if (*path == NULL) 189 return NULL; 190 start = *path; 191 for (p = start ; *p && *p != ':' && *p != '%' ; p++); 192 len = p - start + strlen(name) + 2; /* "2" is for '/' and '\0' */ 193 while (stackblocksize() < len) 194 growstackblock(); 195 q = stackblock(); 196 if (p != start) { 197 memcpy(q, start, p - start); 198 q += p - start; 199 *q++ = '/'; 200 } 201 strcpy(q, name); 202 pathopt = NULL; 203 if (*p == '%') { 204 pathopt = ++p; 205 while (*p && *p != ':') p++; 206 } 207 if (*p == ':') 208 *path = p + 1; 209 else 210 *path = NULL; 211 return stalloc(len); 212 } 213 214 215 216 /*** Command hashing code ***/ 217 218 219 int 220 hashcmd(int argc __unused, char **argv __unused) 221 { 222 struct tblentry **pp; 223 struct tblentry *cmdp; 224 int c; 225 int verbose; 226 struct cmdentry entry; 227 char *name; 228 229 verbose = 0; 230 while ((c = nextopt("rv")) != '\0') { 231 if (c == 'r') { 232 clearcmdentry(0); 233 } else if (c == 'v') { 234 verbose++; 235 } 236 } 237 if (*argptr == NULL) { 238 for (pp = cmdtable ; pp < &cmdtable[CMDTABLESIZE] ; pp++) { 239 for (cmdp = *pp ; cmdp ; cmdp = cmdp->next) { 240 if (cmdp->cmdtype == CMDNORMAL) 241 printentry(cmdp, verbose); 242 } 243 } 244 return 0; 245 } 246 while ((name = *argptr) != NULL) { 247 if ((cmdp = cmdlookup(name, 0)) != NULL 248 && (cmdp->cmdtype == CMDNORMAL 249 || (cmdp->cmdtype == CMDBUILTIN && builtinloc >= 0))) 250 delete_cmd_entry(); 251 find_command(name, &entry, 1, pathval()); 252 if (verbose) { 253 if (entry.cmdtype != CMDUNKNOWN) { /* if no error msg */ 254 cmdp = cmdlookup(name, 0); 255 if (cmdp != NULL) 256 printentry(cmdp, verbose); 257 else 258 outfmt(&errout, "%s: not found\n", name); 259 } 260 flushall(); 261 } 262 argptr++; 263 } 264 return 0; 265 } 266 267 268 STATIC void 269 printentry(struct tblentry *cmdp, int verbose) 270 { 271 int idx; 272 const char *path; 273 char *name; 274 275 if (cmdp->cmdtype == CMDNORMAL) { 276 idx = cmdp->param.index; 277 path = pathval(); 278 do { 279 name = padvance(&path, cmdp->cmdname); 280 stunalloc(name); 281 } while (--idx >= 0); 282 out1str(name); 283 } else if (cmdp->cmdtype == CMDBUILTIN) { 284 out1fmt("builtin %s", cmdp->cmdname); 285 } else if (cmdp->cmdtype == CMDFUNCTION) { 286 out1fmt("function %s", cmdp->cmdname); 287 if (verbose) { 288 INTOFF; 289 name = commandtext(cmdp->param.func); 290 out1c(' '); 291 out1str(name); 292 ckfree(name); 293 INTON; 294 } 295 #ifdef DEBUG 296 } else { 297 error("internal error: cmdtype %d", cmdp->cmdtype); 298 #endif 299 } 300 if (cmdp->rehash) 301 out1c('*'); 302 out1c('\n'); 303 } 304 305 306 307 /* 308 * Resolve a command name. If you change this routine, you may have to 309 * change the shellexec routine as well. 310 */ 311 312 void 313 find_command(char *name, struct cmdentry *entry, int printerr, const char *path) 314 { 315 struct tblentry *cmdp; 316 int idx; 317 int prev; 318 char *fullname; 319 struct stat statb; 320 int e; 321 int i; 322 int spec; 323 324 /* If name contains a slash, don't use the hash table */ 325 if (strchr(name, '/') != NULL) { 326 entry->cmdtype = CMDNORMAL; 327 entry->u.index = 0; 328 return; 329 } 330 331 /* If name is in the table, and not invalidated by cd, we're done */ 332 if ((cmdp = cmdlookup(name, 0)) != NULL && cmdp->rehash == 0) 333 goto success; 334 335 /* If %builtin not in path, check for builtin next */ 336 if (builtinloc < 0 && (i = find_builtin(name, &spec)) >= 0) { 337 INTOFF; 338 cmdp = cmdlookup(name, 1); 339 cmdp->cmdtype = CMDBUILTIN; 340 cmdp->param.index = i; 341 cmdp->special = spec; 342 INTON; 343 goto success; 344 } 345 346 /* We have to search path. */ 347 prev = -1; /* where to start */ 348 if (cmdp) { /* doing a rehash */ 349 if (cmdp->cmdtype == CMDBUILTIN) 350 prev = builtinloc; 351 else 352 prev = cmdp->param.index; 353 } 354 355 e = ENOENT; 356 idx = -1; 357 loop: 358 while ((fullname = padvance(&path, name)) != NULL) { 359 stunalloc(fullname); 360 idx++; 361 if (pathopt) { 362 if (prefix("builtin", pathopt)) { 363 if ((i = find_builtin(name, &spec)) < 0) 364 goto loop; 365 INTOFF; 366 cmdp = cmdlookup(name, 1); 367 cmdp->cmdtype = CMDBUILTIN; 368 cmdp->param.index = i; 369 cmdp->special = spec; 370 INTON; 371 goto success; 372 } else if (prefix("func", pathopt)) { 373 /* handled below */ 374 } else { 375 goto loop; /* ignore unimplemented options */ 376 } 377 } 378 /* if rehash, don't redo absolute path names */ 379 if (fullname[0] == '/' && idx <= prev) { 380 if (idx < prev) 381 goto loop; 382 TRACE(("searchexec \"%s\": no change\n", name)); 383 goto success; 384 } 385 if (stat(fullname, &statb) < 0) { 386 if (errno != ENOENT && errno != ENOTDIR) 387 e = errno; 388 goto loop; 389 } 390 e = EACCES; /* if we fail, this will be the error */ 391 if (!S_ISREG(statb.st_mode)) 392 goto loop; 393 if (pathopt) { /* this is a %func directory */ 394 stalloc(strlen(fullname) + 1); 395 readcmdfile(fullname); 396 if ((cmdp = cmdlookup(name, 0)) == NULL || cmdp->cmdtype != CMDFUNCTION) 397 error("%s not defined in %s", name, fullname); 398 stunalloc(fullname); 399 goto success; 400 } 401 #ifdef notdef 402 if (statb.st_uid == geteuid()) { 403 if ((statb.st_mode & 0100) == 0) 404 goto loop; 405 } else if (statb.st_gid == getegid()) { 406 if ((statb.st_mode & 010) == 0) 407 goto loop; 408 } else { 409 if ((statb.st_mode & 01) == 0) 410 goto loop; 411 } 412 #endif 413 TRACE(("searchexec \"%s\" returns \"%s\"\n", name, fullname)); 414 INTOFF; 415 cmdp = cmdlookup(name, 1); 416 cmdp->cmdtype = CMDNORMAL; 417 cmdp->param.index = idx; 418 INTON; 419 goto success; 420 } 421 422 /* We failed. If there was an entry for this command, delete it */ 423 if (cmdp) 424 delete_cmd_entry(); 425 if (printerr) { 426 if (e == ENOENT || e == ENOTDIR) 427 outfmt(out2, "%s: not found\n", name); 428 else 429 outfmt(out2, "%s: %s\n", name, strerror(e)); 430 } 431 entry->cmdtype = CMDUNKNOWN; 432 return; 433 434 success: 435 if (cmdp) { 436 cmdp->rehash = 0; 437 entry->cmdtype = cmdp->cmdtype; 438 entry->u = cmdp->param; 439 entry->special = cmdp->special; 440 } else 441 entry->cmdtype = CMDUNKNOWN; 442 } 443 444 445 446 /* 447 * Search the table of builtin commands. 448 */ 449 450 int 451 find_builtin(char *name, int *special) 452 { 453 const struct builtincmd *bp; 454 455 for (bp = builtincmd ; bp->name ; bp++) { 456 if (*bp->name == *name && equal(bp->name, name)) { 457 *special = bp->special; 458 return bp->code; 459 } 460 } 461 return -1; 462 } 463 464 465 466 /* 467 * Called when a cd is done. Marks all commands so the next time they 468 * are executed they will be rehashed. 469 */ 470 471 void 472 hashcd(void) 473 { 474 struct tblentry **pp; 475 struct tblentry *cmdp; 476 477 for (pp = cmdtable ; pp < &cmdtable[CMDTABLESIZE] ; pp++) { 478 for (cmdp = *pp ; cmdp ; cmdp = cmdp->next) { 479 if (cmdp->cmdtype == CMDNORMAL 480 || (cmdp->cmdtype == CMDBUILTIN && builtinloc >= 0)) 481 cmdp->rehash = 1; 482 } 483 } 484 } 485 486 487 488 /* 489 * Called before PATH is changed. The argument is the new value of PATH; 490 * pathval() still returns the old value at this point. Called with 491 * interrupts off. 492 */ 493 494 void 495 changepath(const char *newval) 496 { 497 const char *old, *new; 498 int idx; 499 int firstchange; 500 int bltin; 501 502 old = pathval(); 503 new = newval; 504 firstchange = 9999; /* assume no change */ 505 idx = 0; 506 bltin = -1; 507 for (;;) { 508 if (*old != *new) { 509 firstchange = idx; 510 if ((*old == '\0' && *new == ':') 511 || (*old == ':' && *new == '\0')) 512 firstchange++; 513 old = new; /* ignore subsequent differences */ 514 } 515 if (*new == '\0') 516 break; 517 if (*new == '%' && bltin < 0 && prefix("builtin", new + 1)) 518 bltin = idx; 519 if (*new == ':') { 520 idx++; 521 } 522 new++, old++; 523 } 524 if (builtinloc < 0 && bltin >= 0) 525 builtinloc = bltin; /* zap builtins */ 526 if (builtinloc >= 0 && bltin < 0) 527 firstchange = 0; 528 clearcmdentry(firstchange); 529 builtinloc = bltin; 530 } 531 532 533 /* 534 * Clear out command entries. The argument specifies the first entry in 535 * PATH which has changed. 536 */ 537 538 void 539 clearcmdentry(int firstchange) 540 { 541 struct tblentry **tblp; 542 struct tblentry **pp; 543 struct tblentry *cmdp; 544 545 INTOFF; 546 for (tblp = cmdtable ; tblp < &cmdtable[CMDTABLESIZE] ; tblp++) { 547 pp = tblp; 548 while ((cmdp = *pp) != NULL) { 549 if ((cmdp->cmdtype == CMDNORMAL && 550 cmdp->param.index >= firstchange) 551 || (cmdp->cmdtype == CMDBUILTIN && 552 builtinloc >= firstchange)) { 553 *pp = cmdp->next; 554 ckfree(cmdp); 555 } else { 556 pp = &cmdp->next; 557 } 558 } 559 } 560 INTON; 561 } 562 563 564 /* 565 * Delete all functions. 566 */ 567 568 #ifdef mkinit 569 MKINIT void deletefuncs(void); 570 571 SHELLPROC { 572 deletefuncs(); 573 } 574 #endif 575 576 void 577 deletefuncs(void) 578 { 579 struct tblentry **tblp; 580 struct tblentry **pp; 581 struct tblentry *cmdp; 582 583 INTOFF; 584 for (tblp = cmdtable ; tblp < &cmdtable[CMDTABLESIZE] ; tblp++) { 585 pp = tblp; 586 while ((cmdp = *pp) != NULL) { 587 if (cmdp->cmdtype == CMDFUNCTION) { 588 *pp = cmdp->next; 589 freefunc(cmdp->param.func); 590 ckfree(cmdp); 591 } else { 592 pp = &cmdp->next; 593 } 594 } 595 } 596 INTON; 597 } 598 599 600 601 /* 602 * Locate a command in the command hash table. If "add" is nonzero, 603 * add the command to the table if it is not already present. The 604 * variable "lastcmdentry" is set to point to the address of the link 605 * pointing to the entry, so that delete_cmd_entry can delete the 606 * entry. 607 */ 608 609 STATIC struct tblentry **lastcmdentry; 610 611 612 STATIC struct tblentry * 613 cmdlookup(char *name, int add) 614 { 615 int hashval; 616 char *p; 617 struct tblentry *cmdp; 618 struct tblentry **pp; 619 620 p = name; 621 hashval = *p << 4; 622 while (*p) 623 hashval += *p++; 624 hashval &= 0x7FFF; 625 pp = &cmdtable[hashval % CMDTABLESIZE]; 626 for (cmdp = *pp ; cmdp ; cmdp = cmdp->next) { 627 if (equal(cmdp->cmdname, name)) 628 break; 629 pp = &cmdp->next; 630 } 631 if (add && cmdp == NULL) { 632 INTOFF; 633 cmdp = *pp = ckmalloc(sizeof (struct tblentry) - ARB 634 + strlen(name) + 1); 635 cmdp->next = NULL; 636 cmdp->cmdtype = CMDUNKNOWN; 637 cmdp->rehash = 0; 638 strcpy(cmdp->cmdname, name); 639 INTON; 640 } 641 lastcmdentry = pp; 642 return cmdp; 643 } 644 645 /* 646 * Delete the command entry returned on the last lookup. 647 */ 648 649 STATIC void 650 delete_cmd_entry(void) 651 { 652 struct tblentry *cmdp; 653 654 INTOFF; 655 cmdp = *lastcmdentry; 656 *lastcmdentry = cmdp->next; 657 ckfree(cmdp); 658 INTON; 659 } 660 661 662 663 /* 664 * Add a new command entry, replacing any existing command entry for 665 * the same name. 666 */ 667 668 void 669 addcmdentry(char *name, struct cmdentry *entry) 670 { 671 struct tblentry *cmdp; 672 673 INTOFF; 674 cmdp = cmdlookup(name, 1); 675 if (cmdp->cmdtype == CMDFUNCTION) { 676 freefunc(cmdp->param.func); 677 } 678 cmdp->cmdtype = entry->cmdtype; 679 cmdp->param = entry->u; 680 INTON; 681 } 682 683 684 /* 685 * Define a shell function. 686 */ 687 688 void 689 defun(char *name, union node *func) 690 { 691 struct cmdentry entry; 692 693 INTOFF; 694 entry.cmdtype = CMDFUNCTION; 695 entry.u.func = copyfunc(func); 696 addcmdentry(name, &entry); 697 INTON; 698 } 699 700 701 /* 702 * Delete a function if it exists. 703 */ 704 705 int 706 unsetfunc(char *name) 707 { 708 struct tblentry *cmdp; 709 710 if ((cmdp = cmdlookup(name, 0)) != NULL && cmdp->cmdtype == CMDFUNCTION) { 711 freefunc(cmdp->param.func); 712 delete_cmd_entry(); 713 } 714 return (0); 715 } 716 717 /* 718 * Shared code for the following builtin commands: 719 * type, command -v, command -V 720 */ 721 722 int 723 typecmd_impl(int argc, char **argv, int cmd) 724 { 725 struct cmdentry entry; 726 struct tblentry *cmdp; 727 const char * const *pp; 728 struct alias *ap; 729 int i; 730 int err = 0; 731 732 for (i = 1; i < argc; i++) { 733 if (cmd != TYPECMD_SMALLV) 734 out1str(argv[i]); 735 736 /* First look at the keywords */ 737 for (pp = parsekwd; *pp; pp++) 738 if (**pp == *argv[i] && equal(*pp, argv[i])) 739 break; 740 741 if (*pp) { 742 if (cmd == TYPECMD_SMALLV) 743 out1fmt("%s\n", argv[i]); 744 else 745 out1str(" is a shell keyword\n"); 746 continue; 747 } 748 749 /* Then look at the aliases */ 750 if ((ap = lookupalias(argv[i], 1)) != NULL) { 751 if (cmd == TYPECMD_SMALLV) 752 out1fmt("alias %s='%s'\n", argv[i], ap->val); 753 else 754 out1fmt(" is an alias for %s\n", ap->val); 755 continue; 756 } 757 758 /* Then check if it is a tracked alias */ 759 if ((cmdp = cmdlookup(argv[i], 0)) != NULL) { 760 entry.cmdtype = cmdp->cmdtype; 761 entry.u = cmdp->param; 762 } 763 else { 764 /* Finally use brute force */ 765 find_command(argv[i], &entry, 0, pathval()); 766 } 767 768 switch (entry.cmdtype) { 769 case CMDNORMAL: { 770 if (strchr(argv[i], '/') == NULL) { 771 const char *path = pathval(); 772 char *name; 773 int j = entry.u.index; 774 do { 775 name = padvance(&path, argv[i]); 776 stunalloc(name); 777 } while (--j >= 0); 778 if (cmd == TYPECMD_SMALLV) 779 out1fmt("%s\n", name); 780 else 781 out1fmt(" is%s %s\n", 782 (cmdp && cmd == TYPECMD_TYPE) ? 783 " a tracked alias for" : "", 784 name); 785 } else { 786 if (access(argv[i], X_OK) == 0) { 787 if (cmd == TYPECMD_SMALLV) 788 out1fmt("%s\n", argv[i]); 789 else 790 out1fmt(" is %s\n", argv[i]); 791 } else { 792 if (cmd != TYPECMD_SMALLV) 793 out1fmt(": %s\n", 794 strerror(errno)); 795 err |= 127; 796 } 797 } 798 break; 799 } 800 case CMDFUNCTION: 801 if (cmd == TYPECMD_SMALLV) 802 out1fmt("%s\n", argv[i]); 803 else 804 out1str(" is a shell function\n"); 805 break; 806 807 case CMDBUILTIN: 808 if (cmd == TYPECMD_SMALLV) 809 out1fmt("%s\n", argv[i]); 810 else 811 out1str(" is a shell builtin\n"); 812 break; 813 814 default: 815 if (cmd != TYPECMD_SMALLV) 816 out1str(": not found\n"); 817 err |= 127; 818 break; 819 } 820 } 821 return err; 822 } 823 824 /* 825 * Locate and print what a word is... 826 */ 827 828 int 829 typecmd(int argc, char **argv) 830 { 831 return typecmd_impl(argc, argv, TYPECMD_TYPE); 832 } 833