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 37 #ifndef lint 38 /*static char sccsid[] = "from: @(#)exec.c 8.1 (Berkeley) 5/31/93";*/ 39 static char *rcsid = "$Id: exec.c,v 1.12 1994/12/05 19:07:39 cgd Exp $"; 40 #endif /* not lint */ 41 42 /* 43 * When commands are first encountered, they are entered in a hash table. 44 * This ensures that a full path search will not have to be done for them 45 * on each invocation. 46 * 47 * We should investigate converting to a linear search, even though that 48 * would make the command name "hash" a misnomer. 49 */ 50 51 #include "shell.h" 52 #include "main.h" 53 #include "nodes.h" 54 #include "parser.h" 55 #include "redir.h" 56 #include "eval.h" 57 #include "exec.h" 58 #include "builtins.h" 59 #include "var.h" 60 #include "options.h" 61 #include "input.h" 62 #include "output.h" 63 #include "syntax.h" 64 #include "memalloc.h" 65 #include "error.h" 66 #include "init.h" 67 #include "mystring.h" 68 #include "jobs.h" 69 #include <sys/types.h> 70 #include <sys/stat.h> 71 #include <unistd.h> 72 #include <fcntl.h> 73 #include <errno.h> 74 75 76 #define CMDTABLESIZE 31 /* should be prime */ 77 #define ARB 1 /* actual size determined at run time */ 78 79 80 81 struct tblentry { 82 struct tblentry *next; /* next entry in hash chain */ 83 union param param; /* definition of builtin function */ 84 short cmdtype; /* index identifying command */ 85 char rehash; /* if set, cd done since entry created */ 86 char cmdname[ARB]; /* name of command */ 87 }; 88 89 90 STATIC struct tblentry *cmdtable[CMDTABLESIZE]; 91 STATIC int builtinloc = -1; /* index in path of %builtin, or -1 */ 92 93 94 #ifdef __STDC__ 95 STATIC void tryexec(char *, char **, char **); 96 STATIC void execinterp(char **, char **); 97 STATIC void printentry(struct tblentry *, int); 98 STATIC void clearcmdentry(int); 99 STATIC struct tblentry *cmdlookup(char *, int); 100 STATIC void delete_cmd_entry(void); 101 #else 102 STATIC void tryexec(); 103 STATIC void execinterp(); 104 STATIC void printentry(); 105 STATIC void clearcmdentry(); 106 STATIC struct tblentry *cmdlookup(); 107 STATIC void delete_cmd_entry(); 108 #endif 109 110 111 112 /* 113 * Exec a program. Never returns. If you change this routine, you may 114 * have to change the find_command routine as well. 115 */ 116 117 void 118 shellexec(argv, envp, path, index) 119 char **argv, **envp; 120 char *path; 121 int index; 122 { 123 char *cmdname; 124 int e; 125 126 if (strchr(argv[0], '/') != NULL) { 127 tryexec(argv[0], argv, envp); 128 e = errno; 129 } else { 130 e = ENOENT; 131 while ((cmdname = padvance(&path, argv[0])) != NULL) { 132 if (--index < 0 && pathopt == NULL) { 133 tryexec(cmdname, argv, envp); 134 if (errno != ENOENT && errno != ENOTDIR) 135 e = errno; 136 } 137 stunalloc(cmdname); 138 } 139 } 140 error2(argv[0], errmsg(e, E_EXEC)); 141 } 142 143 144 STATIC void 145 tryexec(cmd, argv, envp) 146 char *cmd; 147 char **argv; 148 char **envp; 149 { 150 int e; 151 char *p; 152 153 #ifdef SYSV 154 do { 155 execve(cmd, argv, envp); 156 } while (errno == EINTR); 157 #else 158 execve(cmd, argv, envp); 159 #endif 160 e = errno; 161 if (e == ENOEXEC) { 162 initshellproc(); 163 setinputfile(cmd, 0); 164 commandname = arg0 = savestr(argv[0]); 165 #ifndef BSD 166 pgetc(); pungetc(); /* fill up input buffer */ 167 p = parsenextc; 168 if (parsenleft > 2 && p[0] == '#' && p[1] == '!') { 169 argv[0] = cmd; 170 execinterp(argv, envp); 171 } 172 #endif 173 setparam(argv + 1); 174 exraise(EXSHELLPROC); 175 /*NOTREACHED*/ 176 } 177 errno = e; 178 } 179 180 181 #ifndef BSD 182 /* 183 * Execute an interpreter introduced by "#!", for systems where this 184 * feature has not been built into the kernel. If the interpreter is 185 * the shell, return (effectively ignoring the "#!"). If the execution 186 * of the interpreter fails, exit. 187 * 188 * This code peeks inside the input buffer in order to avoid actually 189 * reading any input. It would benefit from a rewrite. 190 */ 191 192 #define NEWARGS 5 193 194 STATIC void 195 execinterp(argv, envp) 196 char **argv, **envp; 197 { 198 int n; 199 char *inp; 200 char *outp; 201 char c; 202 char *p; 203 char **ap; 204 char *newargs[NEWARGS]; 205 int i; 206 char **ap2; 207 char **new; 208 209 n = parsenleft - 2; 210 inp = parsenextc + 2; 211 ap = newargs; 212 for (;;) { 213 while (--n >= 0 && (*inp == ' ' || *inp == '\t')) 214 inp++; 215 if (n < 0) 216 goto bad; 217 if ((c = *inp++) == '\n') 218 break; 219 if (ap == &newargs[NEWARGS]) 220 bad: error("Bad #! line"); 221 STARTSTACKSTR(outp); 222 do { 223 STPUTC(c, outp); 224 } while (--n >= 0 && (c = *inp++) != ' ' && c != '\t' && c != '\n'); 225 STPUTC('\0', outp); 226 n++, inp--; 227 *ap++ = grabstackstr(outp); 228 } 229 if (ap == newargs + 1) { /* if no args, maybe no exec is needed */ 230 p = newargs[0]; 231 for (;;) { 232 if (equal(p, "sh") || equal(p, "ash")) { 233 return; 234 } 235 while (*p != '/') { 236 if (*p == '\0') 237 goto break2; 238 p++; 239 } 240 p++; 241 } 242 break2:; 243 } 244 i = (char *)ap - (char *)newargs; /* size in bytes */ 245 if (i == 0) 246 error("Bad #! line"); 247 for (ap2 = argv ; *ap2++ != NULL ; ); 248 new = ckmalloc(i + ((char *)ap2 - (char *)argv)); 249 ap = newargs, ap2 = new; 250 while ((i -= sizeof (char **)) >= 0) 251 *ap2++ = *ap++; 252 ap = argv; 253 while (*ap2++ = *ap++); 254 shellexec(new, envp, pathval(), 0); 255 } 256 #endif 257 258 259 260 /* 261 * Do a path search. The variable path (passed by reference) should be 262 * set to the start of the path before the first call; padvance will update 263 * this value as it proceeds. Successive calls to padvance will return 264 * the possible path expansions in sequence. If an option (indicated by 265 * a percent sign) appears in the path entry then the global variable 266 * pathopt will be set to point to it; otherwise pathopt will be set to 267 * NULL. 268 */ 269 270 char *pathopt; 271 272 char * 273 padvance(path, name) 274 char **path; 275 char *name; 276 { 277 register char *p, *q; 278 char *start; 279 int len; 280 281 if (*path == NULL) 282 return NULL; 283 start = *path; 284 for (p = start ; *p && *p != ':' && *p != '%' ; p++); 285 len = p - start + strlen(name) + 2; /* "2" is for '/' and '\0' */ 286 while (stackblocksize() < len) 287 growstackblock(); 288 q = stackblock(); 289 if (p != start) { 290 memcpy(q, start, p - start); 291 q += p - start; 292 *q++ = '/'; 293 } 294 strcpy(q, name); 295 pathopt = NULL; 296 if (*p == '%') { 297 pathopt = ++p; 298 while (*p && *p != ':') p++; 299 } 300 if (*p == ':') 301 *path = p + 1; 302 else 303 *path = NULL; 304 return stalloc(len); 305 } 306 307 308 309 /*** Command hashing code ***/ 310 311 312 int 313 hashcmd(argc, argv) 314 int argc; 315 char **argv; 316 { 317 struct tblentry **pp; 318 struct tblentry *cmdp; 319 int c; 320 int verbose; 321 struct cmdentry entry; 322 char *name; 323 324 verbose = 0; 325 while ((c = nextopt("rv")) != '\0') { 326 if (c == 'r') { 327 clearcmdentry(0); 328 } else if (c == 'v') { 329 verbose++; 330 } 331 } 332 if (*argptr == NULL) { 333 for (pp = cmdtable ; pp < &cmdtable[CMDTABLESIZE] ; pp++) { 334 for (cmdp = *pp ; cmdp ; cmdp = cmdp->next) { 335 printentry(cmdp, verbose); 336 } 337 } 338 return 0; 339 } 340 while ((name = *argptr) != NULL) { 341 if ((cmdp = cmdlookup(name, 0)) != NULL 342 && (cmdp->cmdtype == CMDNORMAL 343 || cmdp->cmdtype == CMDBUILTIN && builtinloc >= 0)) 344 delete_cmd_entry(); 345 find_command(name, &entry, 1); 346 if (verbose) { 347 if (entry.cmdtype != CMDUNKNOWN) { /* if no error msg */ 348 cmdp = cmdlookup(name, 0); 349 printentry(cmdp, verbose); 350 } 351 flushall(); 352 } 353 argptr++; 354 } 355 return 0; 356 } 357 358 359 STATIC void 360 printentry(cmdp, verbose) 361 struct tblentry *cmdp; 362 int verbose; 363 { 364 int index; 365 char *path; 366 char *name; 367 368 if (cmdp->cmdtype == CMDNORMAL) { 369 index = cmdp->param.index; 370 path = pathval(); 371 do { 372 name = padvance(&path, cmdp->cmdname); 373 stunalloc(name); 374 } while (--index >= 0); 375 out1str(name); 376 } else if (cmdp->cmdtype == CMDBUILTIN) { 377 out1fmt("builtin %s", cmdp->cmdname); 378 } else if (cmdp->cmdtype == CMDFUNCTION) { 379 out1fmt("function %s", cmdp->cmdname); 380 if (verbose) { 381 INTOFF; 382 name = commandtext(cmdp->param.func); 383 out1c(' '); 384 out1str(name); 385 ckfree(name); 386 INTON; 387 } 388 #ifdef DEBUG 389 } else { 390 error("internal error: cmdtype %d", cmdp->cmdtype); 391 #endif 392 } 393 if (cmdp->rehash) 394 out1c('*'); 395 out1c('\n'); 396 } 397 398 399 400 /* 401 * Resolve a command name. If you change this routine, you may have to 402 * change the shellexec routine as well. 403 */ 404 405 void 406 find_command(name, entry, printerr) 407 char *name; 408 struct cmdentry *entry; 409 int printerr; 410 { 411 struct tblentry *cmdp; 412 int index; 413 int prev; 414 char *path; 415 char *fullname; 416 struct stat statb; 417 int e; 418 int i; 419 420 /* If name contains a slash, don't use the hash table */ 421 if (strchr(name, '/') != NULL) { 422 entry->cmdtype = CMDNORMAL; 423 entry->u.index = 0; 424 return; 425 } 426 427 /* If name is in the table, and not invalidated by cd, we're done */ 428 if ((cmdp = cmdlookup(name, 0)) != NULL && cmdp->rehash == 0) 429 goto success; 430 431 /* If %builtin not in path, check for builtin next */ 432 if (builtinloc < 0 && (i = find_builtin(name)) >= 0) { 433 INTOFF; 434 cmdp = cmdlookup(name, 1); 435 cmdp->cmdtype = CMDBUILTIN; 436 cmdp->param.index = i; 437 INTON; 438 goto success; 439 } 440 441 /* We have to search path. */ 442 prev = -1; /* where to start */ 443 if (cmdp) { /* doing a rehash */ 444 if (cmdp->cmdtype == CMDBUILTIN) 445 prev = builtinloc; 446 else 447 prev = cmdp->param.index; 448 } 449 450 path = pathval(); 451 e = ENOENT; 452 index = -1; 453 loop: 454 while ((fullname = padvance(&path, name)) != NULL) { 455 stunalloc(fullname); 456 index++; 457 if (pathopt) { 458 if (prefix("builtin", pathopt)) { 459 if ((i = find_builtin(name)) < 0) 460 goto loop; 461 INTOFF; 462 cmdp = cmdlookup(name, 1); 463 cmdp->cmdtype = CMDBUILTIN; 464 cmdp->param.index = i; 465 INTON; 466 goto success; 467 } else if (prefix("func", pathopt)) { 468 /* handled below */ 469 } else { 470 goto loop; /* ignore unimplemented options */ 471 } 472 } 473 /* if rehash, don't redo absolute path names */ 474 if (fullname[0] == '/' && index <= prev) { 475 if (index < prev) 476 goto loop; 477 TRACE(("searchexec \"%s\": no change\n", name)); 478 goto success; 479 } 480 while (stat(fullname, &statb) < 0) { 481 #ifdef SYSV 482 if (errno == EINTR) 483 continue; 484 #endif 485 if (errno != ENOENT && errno != ENOTDIR) 486 e = errno; 487 goto loop; 488 } 489 e = EACCES; /* if we fail, this will be the error */ 490 if ((statb.st_mode & S_IFMT) != S_IFREG) 491 goto loop; 492 if (pathopt) { /* this is a %func directory */ 493 stalloc(strlen(fullname) + 1); 494 readcmdfile(fullname); 495 if ((cmdp = cmdlookup(name, 0)) == NULL || cmdp->cmdtype != CMDFUNCTION) 496 error("%s not defined in %s", name, fullname); 497 stunalloc(fullname); 498 goto success; 499 } 500 #ifdef notdef 501 if (statb.st_uid == geteuid()) { 502 if ((statb.st_mode & 0100) == 0) 503 goto loop; 504 } else if (statb.st_gid == getegid()) { 505 if ((statb.st_mode & 010) == 0) 506 goto loop; 507 } else { 508 if ((statb.st_mode & 01) == 0) 509 goto loop; 510 } 511 #endif 512 TRACE(("searchexec \"%s\" returns \"%s\"\n", name, fullname)); 513 INTOFF; 514 cmdp = cmdlookup(name, 1); 515 cmdp->cmdtype = CMDNORMAL; 516 cmdp->param.index = index; 517 INTON; 518 goto success; 519 } 520 521 /* We failed. If there was an entry for this command, delete it */ 522 if (cmdp) 523 delete_cmd_entry(); 524 if (printerr) 525 outfmt(out2, "%s: %s\n", name, errmsg(e, E_EXEC)); 526 entry->cmdtype = CMDUNKNOWN; 527 return; 528 529 success: 530 cmdp->rehash = 0; 531 entry->cmdtype = cmdp->cmdtype; 532 entry->u = cmdp->param; 533 } 534 535 536 537 /* 538 * Search the table of builtin commands. 539 */ 540 541 int 542 find_builtin(name) 543 char *name; 544 { 545 register const struct builtincmd *bp; 546 547 for (bp = builtincmd ; bp->name ; bp++) { 548 if (*bp->name == *name && equal(bp->name, name)) 549 return bp->code; 550 } 551 return -1; 552 } 553 554 555 556 /* 557 * Called when a cd is done. Marks all commands so the next time they 558 * are executed they will be rehashed. 559 */ 560 561 void 562 hashcd() { 563 struct tblentry **pp; 564 struct tblentry *cmdp; 565 566 for (pp = cmdtable ; pp < &cmdtable[CMDTABLESIZE] ; pp++) { 567 for (cmdp = *pp ; cmdp ; cmdp = cmdp->next) { 568 if (cmdp->cmdtype == CMDNORMAL 569 || cmdp->cmdtype == CMDBUILTIN && builtinloc >= 0) 570 cmdp->rehash = 1; 571 } 572 } 573 } 574 575 576 577 /* 578 * Called before PATH is changed. The argument is the new value of PATH; 579 * pathval() still returns the old value at this point. Called with 580 * interrupts off. 581 */ 582 583 void 584 changepath(newval) 585 char *newval; 586 { 587 char *old, *new; 588 int index; 589 int firstchange; 590 int bltin; 591 int hasdot; 592 593 old = pathval(); 594 new = newval; 595 firstchange = 9999; /* assume no change */ 596 index = hasdot = 0; 597 bltin = -1; 598 if (*new == ':') 599 hasdot++; 600 for (;;) { 601 if (*old != *new) { 602 firstchange = index; 603 if (*old == '\0' && *new == ':' 604 || *old == ':' && *new == '\0') 605 firstchange++; 606 old = new; /* ignore subsequent differences */ 607 } 608 if (*new == '\0') 609 break; 610 if (*new == '%' && bltin < 0 && prefix("builtin", new + 1)) 611 bltin = index; 612 if (*new == ':') { 613 char c = *(new+1); 614 615 index++; 616 if (c == ':' || c == '\0' || (c == '.' && 617 ((c = *(new+2)) == ':' || c == '\0'))) 618 hasdot++; 619 } 620 new++, old++; 621 } 622 if (hasdot && geteuid() == 0) 623 out2str("sh: warning: running as root with dot in PATH\n"); 624 if (builtinloc < 0 && bltin >= 0) 625 builtinloc = bltin; /* zap builtins */ 626 if (builtinloc >= 0 && bltin < 0) 627 firstchange = 0; 628 clearcmdentry(firstchange); 629 builtinloc = bltin; 630 } 631 632 633 /* 634 * Clear out command entries. The argument specifies the first entry in 635 * PATH which has changed. 636 */ 637 638 STATIC void 639 clearcmdentry(firstchange) 640 int firstchange; 641 { 642 struct tblentry **tblp; 643 struct tblentry **pp; 644 struct tblentry *cmdp; 645 646 INTOFF; 647 for (tblp = cmdtable ; tblp < &cmdtable[CMDTABLESIZE] ; tblp++) { 648 pp = tblp; 649 while ((cmdp = *pp) != NULL) { 650 if (cmdp->cmdtype == CMDNORMAL && cmdp->param.index >= firstchange 651 || cmdp->cmdtype == CMDBUILTIN && builtinloc >= firstchange) { 652 *pp = cmdp->next; 653 ckfree(cmdp); 654 } else { 655 pp = &cmdp->next; 656 } 657 } 658 } 659 INTON; 660 } 661 662 663 /* 664 * Delete all functions. 665 */ 666 667 #ifdef mkinit 668 MKINIT void deletefuncs(); 669 670 SHELLPROC { 671 deletefuncs(); 672 } 673 #endif 674 675 void 676 deletefuncs() { 677 struct tblentry **tblp; 678 struct tblentry **pp; 679 struct tblentry *cmdp; 680 681 INTOFF; 682 for (tblp = cmdtable ; tblp < &cmdtable[CMDTABLESIZE] ; tblp++) { 683 pp = tblp; 684 while ((cmdp = *pp) != NULL) { 685 if (cmdp->cmdtype == CMDFUNCTION) { 686 *pp = cmdp->next; 687 freefunc(cmdp->param.func); 688 ckfree(cmdp); 689 } else { 690 pp = &cmdp->next; 691 } 692 } 693 } 694 INTON; 695 } 696 697 698 699 /* 700 * Locate a command in the command hash table. If "add" is nonzero, 701 * add the command to the table if it is not already present. The 702 * variable "lastcmdentry" is set to point to the address of the link 703 * pointing to the entry, so that delete_cmd_entry can delete the 704 * entry. 705 */ 706 707 struct tblentry **lastcmdentry; 708 709 710 STATIC struct tblentry * 711 cmdlookup(name, add) 712 char *name; 713 int add; 714 { 715 int hashval; 716 register char *p; 717 struct tblentry *cmdp; 718 struct tblentry **pp; 719 720 p = name; 721 hashval = *p << 4; 722 while (*p) 723 hashval += *p++; 724 hashval &= 0x7FFF; 725 pp = &cmdtable[hashval % CMDTABLESIZE]; 726 for (cmdp = *pp ; cmdp ; cmdp = cmdp->next) { 727 if (equal(cmdp->cmdname, name)) 728 break; 729 pp = &cmdp->next; 730 } 731 if (add && cmdp == NULL) { 732 INTOFF; 733 cmdp = *pp = ckmalloc(sizeof (struct tblentry) - ARB 734 + strlen(name) + 1); 735 cmdp->next = NULL; 736 cmdp->cmdtype = CMDUNKNOWN; 737 cmdp->rehash = 0; 738 strcpy(cmdp->cmdname, name); 739 INTON; 740 } 741 lastcmdentry = pp; 742 return cmdp; 743 } 744 745 /* 746 * Delete the command entry returned on the last lookup. 747 */ 748 749 STATIC void 750 delete_cmd_entry() { 751 struct tblentry *cmdp; 752 753 INTOFF; 754 cmdp = *lastcmdentry; 755 *lastcmdentry = cmdp->next; 756 ckfree(cmdp); 757 INTON; 758 } 759 760 761 762 #ifdef notdef 763 void 764 getcmdentry(name, entry) 765 char *name; 766 struct cmdentry *entry; 767 { 768 struct tblentry *cmdp = cmdlookup(name, 0); 769 770 if (cmdp) { 771 entry->u = cmdp->param; 772 entry->cmdtype = cmdp->cmdtype; 773 } else { 774 entry->cmdtype = CMDUNKNOWN; 775 entry->u.index = 0; 776 } 777 } 778 #endif 779 780 781 /* 782 * Add a new command entry, replacing any existing command entry for 783 * the same name. 784 */ 785 786 void 787 addcmdentry(name, entry) 788 char *name; 789 struct cmdentry *entry; 790 { 791 struct tblentry *cmdp; 792 793 INTOFF; 794 cmdp = cmdlookup(name, 1); 795 if (cmdp->cmdtype == CMDFUNCTION) { 796 freefunc(cmdp->param.func); 797 } 798 cmdp->cmdtype = entry->cmdtype; 799 cmdp->param = entry->u; 800 INTON; 801 } 802 803 804 /* 805 * Define a shell function. 806 */ 807 808 void 809 defun(name, func) 810 char *name; 811 union node *func; 812 { 813 struct cmdentry entry; 814 815 INTOFF; 816 entry.cmdtype = CMDFUNCTION; 817 entry.u.func = copyfunc(func); 818 addcmdentry(name, &entry); 819 INTON; 820 } 821 822 823 /* 824 * Delete a function if it exists. 825 */ 826 827 int 828 unsetfunc(name) 829 char *name; 830 { 831 struct tblentry *cmdp; 832 833 if ((cmdp = cmdlookup(name, 0)) != NULL && cmdp->cmdtype == CMDFUNCTION) { 834 freefunc(cmdp->param.func); 835 delete_cmd_entry(); 836 return (0); 837 } 838 return (1); 839 } 840