1 /* perl.c 2 * 3 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 4 * 2000, 2001, 2002, 2003, by Larry Wall and others 5 * 6 * You may distribute under the terms of either the GNU General Public 7 * License or the Artistic License, as specified in the README file. 8 * 9 */ 10 11 /* 12 * "A ship then new they built for him/of mithril and of elven glass" --Bilbo 13 */ 14 15 #include "EXTERN.h" 16 #define PERL_IN_PERL_C 17 #include "perl.h" 18 #include "patchlevel.h" /* for local_patches */ 19 20 #ifdef NETWARE 21 #include "nwutil.h" 22 char *nw_get_sitelib(const char *pl); 23 #endif 24 25 /* XXX If this causes problems, set i_unistd=undef in the hint file. */ 26 #ifdef I_UNISTD 27 #include <unistd.h> 28 #endif 29 30 #ifdef __BEOS__ 31 # define HZ 1000000 32 #endif 33 34 #ifndef HZ 35 # ifdef CLK_TCK 36 # define HZ CLK_TCK 37 # else 38 # define HZ 60 39 # endif 40 #endif 41 42 #if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO) 43 char *getenv (char *); /* Usually in <stdlib.h> */ 44 #endif 45 46 static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen); 47 48 #ifdef IAMSUID 49 #ifndef DOSUID 50 #define DOSUID 51 #endif 52 #endif 53 54 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW 55 #ifdef DOSUID 56 #undef DOSUID 57 #endif 58 #endif 59 60 #if defined(USE_5005THREADS) 61 # define INIT_TLS_AND_INTERP \ 62 STMT_START { \ 63 if (!PL_curinterp) { \ 64 PERL_SET_INTERP(my_perl); \ 65 INIT_THREADS; \ 66 ALLOC_THREAD_KEY; \ 67 } \ 68 } STMT_END 69 #else 70 # if defined(USE_ITHREADS) 71 # define INIT_TLS_AND_INTERP \ 72 STMT_START { \ 73 if (!PL_curinterp) { \ 74 PERL_SET_INTERP(my_perl); \ 75 INIT_THREADS; \ 76 ALLOC_THREAD_KEY; \ 77 PERL_SET_THX(my_perl); \ 78 OP_REFCNT_INIT; \ 79 MUTEX_INIT(&PL_dollarzero_mutex); \ 80 } \ 81 else { \ 82 PERL_SET_THX(my_perl); \ 83 } \ 84 } STMT_END 85 # else 86 # define INIT_TLS_AND_INTERP \ 87 STMT_START { \ 88 if (!PL_curinterp) { \ 89 PERL_SET_INTERP(my_perl); \ 90 } \ 91 PERL_SET_THX(my_perl); \ 92 } STMT_END 93 # endif 94 #endif 95 96 #ifdef PERL_IMPLICIT_SYS 97 PerlInterpreter * 98 perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS, 99 struct IPerlMem* ipMP, struct IPerlEnv* ipE, 100 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO, 101 struct IPerlDir* ipD, struct IPerlSock* ipS, 102 struct IPerlProc* ipP) 103 { 104 PerlInterpreter *my_perl; 105 /* New() needs interpreter, so call malloc() instead */ 106 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter)); 107 INIT_TLS_AND_INTERP; 108 Zero(my_perl, 1, PerlInterpreter); 109 PL_Mem = ipM; 110 PL_MemShared = ipMS; 111 PL_MemParse = ipMP; 112 PL_Env = ipE; 113 PL_StdIO = ipStd; 114 PL_LIO = ipLIO; 115 PL_Dir = ipD; 116 PL_Sock = ipS; 117 PL_Proc = ipP; 118 119 return my_perl; 120 } 121 #else 122 123 /* 124 =head1 Embedding Functions 125 126 =for apidoc perl_alloc 127 128 Allocates a new Perl interpreter. See L<perlembed>. 129 130 =cut 131 */ 132 133 PerlInterpreter * 134 perl_alloc(void) 135 { 136 PerlInterpreter *my_perl; 137 #ifdef USE_5005THREADS 138 dTHX; 139 #endif 140 141 /* New() needs interpreter, so call malloc() instead */ 142 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter)); 143 144 INIT_TLS_AND_INTERP; 145 Zero(my_perl, 1, PerlInterpreter); 146 return my_perl; 147 } 148 #endif /* PERL_IMPLICIT_SYS */ 149 150 /* 151 =for apidoc perl_construct 152 153 Initializes a new Perl interpreter. See L<perlembed>. 154 155 =cut 156 */ 157 158 void 159 perl_construct(pTHXx) 160 { 161 #ifdef USE_5005THREADS 162 #ifndef FAKE_THREADS 163 struct perl_thread *thr = NULL; 164 #endif /* FAKE_THREADS */ 165 #endif /* USE_5005THREADS */ 166 167 #ifdef MULTIPLICITY 168 init_interp(); 169 PL_perl_destruct_level = 1; 170 #else 171 if (PL_perl_destruct_level > 0) 172 init_interp(); 173 #endif 174 /* Init the real globals (and main thread)? */ 175 if (!PL_linestr) { 176 #ifdef USE_5005THREADS 177 MUTEX_INIT(&PL_sv_mutex); 178 /* 179 * Safe to use basic SV functions from now on (though 180 * not things like mortals or tainting yet). 181 */ 182 MUTEX_INIT(&PL_eval_mutex); 183 COND_INIT(&PL_eval_cond); 184 MUTEX_INIT(&PL_threads_mutex); 185 COND_INIT(&PL_nthreads_cond); 186 # ifdef EMULATE_ATOMIC_REFCOUNTS 187 MUTEX_INIT(&PL_svref_mutex); 188 # endif /* EMULATE_ATOMIC_REFCOUNTS */ 189 190 MUTEX_INIT(&PL_cred_mutex); 191 MUTEX_INIT(&PL_sv_lock_mutex); 192 MUTEX_INIT(&PL_fdpid_mutex); 193 194 thr = init_main_thread(); 195 #endif /* USE_5005THREADS */ 196 197 #ifdef PERL_FLEXIBLE_EXCEPTIONS 198 PL_protect = MEMBER_TO_FPTR(Perl_default_protect); /* for exceptions */ 199 #endif 200 201 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */ 202 203 PL_linestr = NEWSV(65,79); 204 sv_upgrade(PL_linestr,SVt_PVIV); 205 206 if (!SvREADONLY(&PL_sv_undef)) { 207 /* set read-only and try to insure than we wont see REFCNT==0 208 very often */ 209 210 SvREADONLY_on(&PL_sv_undef); 211 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2; 212 213 sv_setpv(&PL_sv_no,PL_No); 214 SvNV(&PL_sv_no); 215 SvREADONLY_on(&PL_sv_no); 216 SvREFCNT(&PL_sv_no) = (~(U32)0)/2; 217 218 sv_setpv(&PL_sv_yes,PL_Yes); 219 SvNV(&PL_sv_yes); 220 SvREADONLY_on(&PL_sv_yes); 221 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2; 222 223 SvREADONLY_on(&PL_sv_placeholder); 224 SvREFCNT(&PL_sv_placeholder) = (~(U32)0)/2; 225 } 226 227 PL_sighandlerp = Perl_sighandler; 228 PL_pidstatus = newHV(); 229 } 230 231 PL_rs = newSVpvn("\n", 1); 232 233 init_stacks(); 234 235 init_ids(); 236 PL_lex_state = LEX_NOTPARSING; 237 238 JMPENV_BOOTSTRAP; 239 STATUS_ALL_SUCCESS; 240 241 init_i18nl10n(1); 242 SET_NUMERIC_STANDARD(); 243 244 { 245 U8 *s; 246 PL_patchlevel = NEWSV(0,4); 247 (void)SvUPGRADE(PL_patchlevel, SVt_PVNV); 248 if (PERL_REVISION > 127 || PERL_VERSION > 127 || PERL_SUBVERSION > 127) 249 SvGROW(PL_patchlevel, UTF8_MAXLEN*3+1); 250 s = (U8*)SvPVX(PL_patchlevel); 251 /* Build version strings using "native" characters */ 252 s = uvchr_to_utf8(s, (UV)PERL_REVISION); 253 s = uvchr_to_utf8(s, (UV)PERL_VERSION); 254 s = uvchr_to_utf8(s, (UV)PERL_SUBVERSION); 255 *s = '\0'; 256 SvCUR_set(PL_patchlevel, s - (U8*)SvPVX(PL_patchlevel)); 257 SvPOK_on(PL_patchlevel); 258 SvNVX(PL_patchlevel) = (NV)PERL_REVISION + 259 ((NV)PERL_VERSION / (NV)1000) + 260 ((NV)PERL_SUBVERSION / (NV)1000000); 261 SvNOK_on(PL_patchlevel); /* dual valued */ 262 SvUTF8_on(PL_patchlevel); 263 SvREADONLY_on(PL_patchlevel); 264 } 265 266 #if defined(LOCAL_PATCH_COUNT) 267 PL_localpatches = local_patches; /* For possible -v */ 268 #endif 269 270 #ifdef HAVE_INTERP_INTERN 271 sys_intern_init(); 272 #endif 273 274 PerlIO_init(aTHX); /* Hook to IO system */ 275 276 PL_fdpid = newAV(); /* for remembering popen pids by fd */ 277 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */ 278 PL_errors = newSVpvn("",0); 279 sv_setpvn(PERL_DEBUG_PAD(0), "", 0); /* For regex debugging. */ 280 sv_setpvn(PERL_DEBUG_PAD(1), "", 0); /* ext/re needs these */ 281 sv_setpvn(PERL_DEBUG_PAD(2), "", 0); /* even without DEBUGGING. */ 282 #ifdef USE_ITHREADS 283 PL_regex_padav = newAV(); 284 av_push(PL_regex_padav,(SV*)newAV()); /* First entry is an array of empty elements */ 285 PL_regex_pad = AvARRAY(PL_regex_padav); 286 #endif 287 #ifdef USE_REENTRANT_API 288 Perl_reentrant_init(aTHX); 289 #endif 290 291 /* Note that strtab is a rather special HV. Assumptions are made 292 about not iterating on it, and not adding tie magic to it. 293 It is properly deallocated in perl_destruct() */ 294 PL_strtab = newHV(); 295 296 #ifdef USE_5005THREADS 297 MUTEX_INIT(&PL_strtab_mutex); 298 #endif 299 HvSHAREKEYS_off(PL_strtab); /* mandatory */ 300 hv_ksplit(PL_strtab, 512); 301 302 #if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__)) 303 _dyld_lookup_and_bind 304 ("__environ", (unsigned long *) &environ_pointer, NULL); 305 #endif /* environ */ 306 307 #ifndef PERL_MICRO 308 # ifdef USE_ENVIRON_ARRAY 309 PL_origenviron = environ; 310 # endif 311 #endif 312 313 /* Use sysconf(_SC_CLK_TCK) if available, if not 314 * available or if the sysconf() fails, use the HZ. */ 315 #if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK) 316 PL_clocktick = sysconf(_SC_CLK_TCK); 317 if (PL_clocktick <= 0) 318 #endif 319 PL_clocktick = HZ; 320 321 PL_stashcache = newHV(); 322 323 ENTER; 324 } 325 326 /* 327 =for apidoc nothreadhook 328 329 Stub that provides thread hook for perl_destruct when there are 330 no threads. 331 332 =cut 333 */ 334 335 int 336 Perl_nothreadhook(pTHX) 337 { 338 return 0; 339 } 340 341 /* 342 =for apidoc perl_destruct 343 344 Shuts down a Perl interpreter. See L<perlembed>. 345 346 =cut 347 */ 348 349 int 350 perl_destruct(pTHXx) 351 { 352 volatile int destruct_level; /* 0=none, 1=full, 2=full with checks */ 353 HV *hv; 354 #ifdef USE_5005THREADS 355 Thread t; 356 dTHX; 357 #endif /* USE_5005THREADS */ 358 359 /* wait for all pseudo-forked children to finish */ 360 PERL_WAIT_FOR_CHILDREN; 361 362 #ifdef USE_5005THREADS 363 #ifndef FAKE_THREADS 364 /* Pass 1 on any remaining threads: detach joinables, join zombies */ 365 retry_cleanup: 366 MUTEX_LOCK(&PL_threads_mutex); 367 DEBUG_S(PerlIO_printf(Perl_debug_log, 368 "perl_destruct: waiting for %d threads...\n", 369 PL_nthreads - 1)); 370 for (t = thr->next; t != thr; t = t->next) { 371 MUTEX_LOCK(&t->mutex); 372 switch (ThrSTATE(t)) { 373 AV *av; 374 case THRf_ZOMBIE: 375 DEBUG_S(PerlIO_printf(Perl_debug_log, 376 "perl_destruct: joining zombie %p\n", t)); 377 ThrSETSTATE(t, THRf_DEAD); 378 MUTEX_UNLOCK(&t->mutex); 379 PL_nthreads--; 380 /* 381 * The SvREFCNT_dec below may take a long time (e.g. av 382 * may contain an object scalar whose destructor gets 383 * called) so we have to unlock threads_mutex and start 384 * all over again. 385 */ 386 MUTEX_UNLOCK(&PL_threads_mutex); 387 JOIN(t, &av); 388 SvREFCNT_dec((SV*)av); 389 DEBUG_S(PerlIO_printf(Perl_debug_log, 390 "perl_destruct: joined zombie %p OK\n", t)); 391 goto retry_cleanup; 392 case THRf_R_JOINABLE: 393 DEBUG_S(PerlIO_printf(Perl_debug_log, 394 "perl_destruct: detaching thread %p\n", t)); 395 ThrSETSTATE(t, THRf_R_DETACHED); 396 /* 397 * We unlock threads_mutex and t->mutex in the opposite order 398 * from which we locked them just so that DETACH won't 399 * deadlock if it panics. It's only a breach of good style 400 * not a bug since they are unlocks not locks. 401 */ 402 MUTEX_UNLOCK(&PL_threads_mutex); 403 DETACH(t); 404 MUTEX_UNLOCK(&t->mutex); 405 goto retry_cleanup; 406 default: 407 DEBUG_S(PerlIO_printf(Perl_debug_log, 408 "perl_destruct: ignoring %p (state %u)\n", 409 t, ThrSTATE(t))); 410 MUTEX_UNLOCK(&t->mutex); 411 /* fall through and out */ 412 } 413 } 414 /* We leave the above "Pass 1" loop with threads_mutex still locked */ 415 416 /* Pass 2 on remaining threads: wait for the thread count to drop to one */ 417 while (PL_nthreads > 1) 418 { 419 DEBUG_S(PerlIO_printf(Perl_debug_log, 420 "perl_destruct: final wait for %d threads\n", 421 PL_nthreads - 1)); 422 COND_WAIT(&PL_nthreads_cond, &PL_threads_mutex); 423 } 424 /* At this point, we're the last thread */ 425 MUTEX_UNLOCK(&PL_threads_mutex); 426 DEBUG_S(PerlIO_printf(Perl_debug_log, "perl_destruct: armageddon has arrived\n")); 427 MUTEX_DESTROY(&PL_threads_mutex); 428 COND_DESTROY(&PL_nthreads_cond); 429 PL_nthreads--; 430 #endif /* !defined(FAKE_THREADS) */ 431 #endif /* USE_5005THREADS */ 432 433 destruct_level = PL_perl_destruct_level; 434 #ifdef DEBUGGING 435 { 436 char *s; 437 if ((s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL"))) { 438 int i = atoi(s); 439 if (destruct_level < i) 440 destruct_level = i; 441 } 442 } 443 #endif 444 445 446 if(PL_exit_flags & PERL_EXIT_DESTRUCT_END) { 447 dJMPENV; 448 int x = 0; 449 450 JMPENV_PUSH(x); 451 if (PL_endav && !PL_minus_c) 452 call_list(PL_scopestack_ix, PL_endav); 453 JMPENV_POP; 454 } 455 LEAVE; 456 FREETMPS; 457 458 /* Need to flush since END blocks can produce output */ 459 my_fflush_all(); 460 461 if (CALL_FPTR(PL_threadhook)(aTHX)) { 462 /* Threads hook has vetoed further cleanup */ 463 return STATUS_NATIVE_EXPORT; 464 } 465 466 /* We must account for everything. */ 467 468 /* Destroy the main CV and syntax tree */ 469 if (PL_main_root) { 470 /* ensure comppad/curpad to refer to main's pad */ 471 if (CvPADLIST(PL_main_cv)) { 472 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1); 473 } 474 op_free(PL_main_root); 475 PL_main_root = Nullop; 476 } 477 PL_curcop = &PL_compiling; 478 PL_main_start = Nullop; 479 SvREFCNT_dec(PL_main_cv); 480 PL_main_cv = Nullcv; 481 PL_dirty = TRUE; 482 483 /* Tell PerlIO we are about to tear things apart in case 484 we have layers which are using resources that should 485 be cleaned up now. 486 */ 487 488 PerlIO_destruct(aTHX); 489 490 if (PL_sv_objcount) { 491 /* 492 * Try to destruct global references. We do this first so that the 493 * destructors and destructees still exist. Some sv's might remain. 494 * Non-referenced objects are on their own. 495 */ 496 sv_clean_objs(); 497 PL_sv_objcount = 0; 498 } 499 500 /* unhook hooks which will soon be, or use, destroyed data */ 501 SvREFCNT_dec(PL_warnhook); 502 PL_warnhook = Nullsv; 503 SvREFCNT_dec(PL_diehook); 504 PL_diehook = Nullsv; 505 506 /* call exit list functions */ 507 while (PL_exitlistlen-- > 0) 508 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr); 509 510 Safefree(PL_exitlist); 511 512 PL_exitlist = NULL; 513 PL_exitlistlen = 0; 514 515 if (destruct_level == 0){ 516 517 DEBUG_P(debprofdump()); 518 519 #if defined(PERLIO_LAYERS) 520 /* No more IO - including error messages ! */ 521 PerlIO_cleanup(aTHX); 522 #endif 523 524 /* The exit() function will do everything that needs doing. */ 525 return STATUS_NATIVE_EXPORT; 526 } 527 528 /* jettison our possibly duplicated environment */ 529 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied 530 * so we certainly shouldn't free it here 531 */ 532 #ifndef PERL_MICRO 533 #if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV) 534 if (environ != PL_origenviron 535 #ifdef USE_ITHREADS 536 /* only main thread can free environ[0] contents */ 537 && PL_curinterp == aTHX 538 #endif 539 ) 540 { 541 I32 i; 542 543 for (i = 0; environ[i]; i++) 544 safesysfree(environ[i]); 545 546 /* Must use safesysfree() when working with environ. */ 547 safesysfree(environ); 548 549 environ = PL_origenviron; 550 } 551 #endif 552 #endif /* !PERL_MICRO */ 553 554 #ifdef USE_ITHREADS 555 /* the syntax tree is shared between clones 556 * so op_free(PL_main_root) only ReREFCNT_dec's 557 * REGEXPs in the parent interpreter 558 * we need to manually ReREFCNT_dec for the clones 559 */ 560 { 561 I32 i = AvFILLp(PL_regex_padav) + 1; 562 SV **ary = AvARRAY(PL_regex_padav); 563 564 while (i) { 565 SV *resv = ary[--i]; 566 REGEXP *re = INT2PTR(REGEXP *,SvIVX(resv)); 567 568 if (SvFLAGS(resv) & SVf_BREAK) { 569 /* this is PL_reg_curpm, already freed 570 * flag is set in regexec.c:S_regtry 571 */ 572 SvFLAGS(resv) &= ~SVf_BREAK; 573 } 574 else if(SvREPADTMP(resv)) { 575 SvREPADTMP_off(resv); 576 } 577 else { 578 ReREFCNT_dec(re); 579 } 580 } 581 } 582 SvREFCNT_dec(PL_regex_padav); 583 PL_regex_padav = Nullav; 584 PL_regex_pad = NULL; 585 #endif 586 587 SvREFCNT_dec((SV*) PL_stashcache); 588 PL_stashcache = NULL; 589 590 /* loosen bonds of global variables */ 591 592 if(PL_rsfp) { 593 (void)PerlIO_close(PL_rsfp); 594 PL_rsfp = Nullfp; 595 } 596 597 /* Filters for program text */ 598 SvREFCNT_dec(PL_rsfp_filters); 599 PL_rsfp_filters = Nullav; 600 601 /* switches */ 602 PL_preprocess = FALSE; 603 PL_minus_n = FALSE; 604 PL_minus_p = FALSE; 605 PL_minus_l = FALSE; 606 PL_minus_a = FALSE; 607 PL_minus_F = FALSE; 608 PL_doswitches = FALSE; 609 PL_dowarn = G_WARN_OFF; 610 PL_doextract = FALSE; 611 PL_sawampersand = FALSE; /* must save all match strings */ 612 PL_unsafe = FALSE; 613 614 Safefree(PL_inplace); 615 PL_inplace = Nullch; 616 SvREFCNT_dec(PL_patchlevel); 617 618 if (PL_e_script) { 619 SvREFCNT_dec(PL_e_script); 620 PL_e_script = Nullsv; 621 } 622 623 PL_perldb = 0; 624 625 /* magical thingies */ 626 627 SvREFCNT_dec(PL_ofs_sv); /* $, */ 628 PL_ofs_sv = Nullsv; 629 630 SvREFCNT_dec(PL_ors_sv); /* $\ */ 631 PL_ors_sv = Nullsv; 632 633 SvREFCNT_dec(PL_rs); /* $/ */ 634 PL_rs = Nullsv; 635 636 PL_multiline = 0; /* $* */ 637 Safefree(PL_osname); /* $^O */ 638 PL_osname = Nullch; 639 640 SvREFCNT_dec(PL_statname); 641 PL_statname = Nullsv; 642 PL_statgv = Nullgv; 643 644 /* defgv, aka *_ should be taken care of elsewhere */ 645 646 /* clean up after study() */ 647 SvREFCNT_dec(PL_lastscream); 648 PL_lastscream = Nullsv; 649 Safefree(PL_screamfirst); 650 PL_screamfirst = 0; 651 Safefree(PL_screamnext); 652 PL_screamnext = 0; 653 654 /* float buffer */ 655 Safefree(PL_efloatbuf); 656 PL_efloatbuf = Nullch; 657 PL_efloatsize = 0; 658 659 /* startup and shutdown function lists */ 660 SvREFCNT_dec(PL_beginav); 661 SvREFCNT_dec(PL_beginav_save); 662 SvREFCNT_dec(PL_endav); 663 SvREFCNT_dec(PL_checkav); 664 SvREFCNT_dec(PL_checkav_save); 665 SvREFCNT_dec(PL_initav); 666 PL_beginav = Nullav; 667 PL_beginav_save = Nullav; 668 PL_endav = Nullav; 669 PL_checkav = Nullav; 670 PL_checkav_save = Nullav; 671 PL_initav = Nullav; 672 673 /* shortcuts just get cleared */ 674 PL_envgv = Nullgv; 675 PL_incgv = Nullgv; 676 PL_hintgv = Nullgv; 677 PL_errgv = Nullgv; 678 PL_argvgv = Nullgv; 679 PL_argvoutgv = Nullgv; 680 PL_stdingv = Nullgv; 681 PL_stderrgv = Nullgv; 682 PL_last_in_gv = Nullgv; 683 PL_replgv = Nullgv; 684 PL_DBgv = Nullgv; 685 PL_DBline = Nullgv; 686 PL_DBsub = Nullgv; 687 PL_DBsingle = Nullsv; 688 PL_DBtrace = Nullsv; 689 PL_DBsignal = Nullsv; 690 PL_DBcv = Nullcv; 691 PL_dbargs = Nullav; 692 PL_debstash = Nullhv; 693 694 /* reset so print() ends up where we expect */ 695 setdefout(Nullgv); 696 697 SvREFCNT_dec(PL_argvout_stack); 698 PL_argvout_stack = Nullav; 699 700 SvREFCNT_dec(PL_modglobal); 701 PL_modglobal = Nullhv; 702 SvREFCNT_dec(PL_preambleav); 703 PL_preambleav = Nullav; 704 SvREFCNT_dec(PL_subname); 705 PL_subname = Nullsv; 706 SvREFCNT_dec(PL_linestr); 707 PL_linestr = Nullsv; 708 SvREFCNT_dec(PL_pidstatus); 709 PL_pidstatus = Nullhv; 710 SvREFCNT_dec(PL_toptarget); 711 PL_toptarget = Nullsv; 712 SvREFCNT_dec(PL_bodytarget); 713 PL_bodytarget = Nullsv; 714 PL_formtarget = Nullsv; 715 716 /* free locale stuff */ 717 #ifdef USE_LOCALE_COLLATE 718 Safefree(PL_collation_name); 719 PL_collation_name = Nullch; 720 #endif 721 722 #ifdef USE_LOCALE_NUMERIC 723 Safefree(PL_numeric_name); 724 PL_numeric_name = Nullch; 725 SvREFCNT_dec(PL_numeric_radix_sv); 726 PL_numeric_radix_sv = Nullsv; 727 #endif 728 729 /* clear utf8 character classes */ 730 SvREFCNT_dec(PL_utf8_alnum); 731 SvREFCNT_dec(PL_utf8_alnumc); 732 SvREFCNT_dec(PL_utf8_ascii); 733 SvREFCNT_dec(PL_utf8_alpha); 734 SvREFCNT_dec(PL_utf8_space); 735 SvREFCNT_dec(PL_utf8_cntrl); 736 SvREFCNT_dec(PL_utf8_graph); 737 SvREFCNT_dec(PL_utf8_digit); 738 SvREFCNT_dec(PL_utf8_upper); 739 SvREFCNT_dec(PL_utf8_lower); 740 SvREFCNT_dec(PL_utf8_print); 741 SvREFCNT_dec(PL_utf8_punct); 742 SvREFCNT_dec(PL_utf8_xdigit); 743 SvREFCNT_dec(PL_utf8_mark); 744 SvREFCNT_dec(PL_utf8_toupper); 745 SvREFCNT_dec(PL_utf8_totitle); 746 SvREFCNT_dec(PL_utf8_tolower); 747 SvREFCNT_dec(PL_utf8_tofold); 748 SvREFCNT_dec(PL_utf8_idstart); 749 SvREFCNT_dec(PL_utf8_idcont); 750 PL_utf8_alnum = Nullsv; 751 PL_utf8_alnumc = Nullsv; 752 PL_utf8_ascii = Nullsv; 753 PL_utf8_alpha = Nullsv; 754 PL_utf8_space = Nullsv; 755 PL_utf8_cntrl = Nullsv; 756 PL_utf8_graph = Nullsv; 757 PL_utf8_digit = Nullsv; 758 PL_utf8_upper = Nullsv; 759 PL_utf8_lower = Nullsv; 760 PL_utf8_print = Nullsv; 761 PL_utf8_punct = Nullsv; 762 PL_utf8_xdigit = Nullsv; 763 PL_utf8_mark = Nullsv; 764 PL_utf8_toupper = Nullsv; 765 PL_utf8_totitle = Nullsv; 766 PL_utf8_tolower = Nullsv; 767 PL_utf8_tofold = Nullsv; 768 PL_utf8_idstart = Nullsv; 769 PL_utf8_idcont = Nullsv; 770 771 if (!specialWARN(PL_compiling.cop_warnings)) 772 SvREFCNT_dec(PL_compiling.cop_warnings); 773 PL_compiling.cop_warnings = Nullsv; 774 if (!specialCopIO(PL_compiling.cop_io)) 775 SvREFCNT_dec(PL_compiling.cop_io); 776 PL_compiling.cop_io = Nullsv; 777 CopFILE_free(&PL_compiling); 778 CopSTASH_free(&PL_compiling); 779 780 /* Prepare to destruct main symbol table. */ 781 782 hv = PL_defstash; 783 PL_defstash = 0; 784 SvREFCNT_dec(hv); 785 SvREFCNT_dec(PL_curstname); 786 PL_curstname = Nullsv; 787 788 /* clear queued errors */ 789 SvREFCNT_dec(PL_errors); 790 PL_errors = Nullsv; 791 792 FREETMPS; 793 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) { 794 if (PL_scopestack_ix != 0) 795 Perl_warner(aTHX_ packWARN(WARN_INTERNAL), 796 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n", 797 (long)PL_scopestack_ix); 798 if (PL_savestack_ix != 0) 799 Perl_warner(aTHX_ packWARN(WARN_INTERNAL), 800 "Unbalanced saves: %ld more saves than restores\n", 801 (long)PL_savestack_ix); 802 if (PL_tmps_floor != -1) 803 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n", 804 (long)PL_tmps_floor + 1); 805 if (cxstack_ix != -1) 806 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n", 807 (long)cxstack_ix + 1); 808 } 809 810 /* Now absolutely destruct everything, somehow or other, loops or no. */ 811 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */ 812 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */ 813 814 /* the 2 is for PL_fdpid and PL_strtab */ 815 while (PL_sv_count > 2 && sv_clean_all()) 816 ; 817 818 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK; 819 SvFLAGS(PL_fdpid) |= SVt_PVAV; 820 SvFLAGS(PL_strtab) &= ~SVTYPEMASK; 821 SvFLAGS(PL_strtab) |= SVt_PVHV; 822 823 AvREAL_off(PL_fdpid); /* no surviving entries */ 824 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */ 825 PL_fdpid = Nullav; 826 827 #ifdef HAVE_INTERP_INTERN 828 sys_intern_clear(); 829 #endif 830 831 /* Destruct the global string table. */ 832 { 833 /* Yell and reset the HeVAL() slots that are still holding refcounts, 834 * so that sv_free() won't fail on them. 835 */ 836 I32 riter; 837 I32 max; 838 HE *hent; 839 HE **array; 840 841 riter = 0; 842 max = HvMAX(PL_strtab); 843 array = HvARRAY(PL_strtab); 844 hent = array[0]; 845 for (;;) { 846 if (hent && ckWARN_d(WARN_INTERNAL)) { 847 Perl_warner(aTHX_ packWARN(WARN_INTERNAL), 848 "Unbalanced string table refcount: (%d) for \"%s\"", 849 HeVAL(hent) - Nullsv, HeKEY(hent)); 850 HeVAL(hent) = Nullsv; 851 hent = HeNEXT(hent); 852 } 853 if (!hent) { 854 if (++riter > max) 855 break; 856 hent = array[riter]; 857 } 858 } 859 } 860 SvREFCNT_dec(PL_strtab); 861 862 #ifdef USE_ITHREADS 863 /* free the pointer table used for cloning */ 864 ptr_table_free(PL_ptr_table); 865 PL_ptr_table = (PTR_TBL_t*)NULL; 866 #endif 867 868 /* free special SVs */ 869 870 SvREFCNT(&PL_sv_yes) = 0; 871 sv_clear(&PL_sv_yes); 872 SvANY(&PL_sv_yes) = NULL; 873 SvFLAGS(&PL_sv_yes) = 0; 874 875 SvREFCNT(&PL_sv_no) = 0; 876 sv_clear(&PL_sv_no); 877 SvANY(&PL_sv_no) = NULL; 878 SvFLAGS(&PL_sv_no) = 0; 879 880 { 881 int i; 882 for (i=0; i<=2; i++) { 883 SvREFCNT(PERL_DEBUG_PAD(i)) = 0; 884 sv_clear(PERL_DEBUG_PAD(i)); 885 SvANY(PERL_DEBUG_PAD(i)) = NULL; 886 SvFLAGS(PERL_DEBUG_PAD(i)) = 0; 887 } 888 } 889 890 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL)) 891 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count); 892 893 #ifdef DEBUG_LEAKING_SCALARS 894 if (PL_sv_count != 0) { 895 SV* sva; 896 SV* sv; 897 register SV* svend; 898 899 for (sva = PL_sv_arenaroot; sva; sva = (SV*)SvANY(sva)) { 900 svend = &sva[SvREFCNT(sva)]; 901 for (sv = sva + 1; sv < svend; ++sv) { 902 if (SvTYPE(sv) != SVTYPEMASK) { 903 PerlIO_printf(Perl_debug_log, "leaked: 0x%p\n", sv); 904 } 905 } 906 } 907 } 908 #endif 909 PL_sv_count = 0; 910 911 912 #if defined(PERLIO_LAYERS) 913 /* No more IO - including error messages ! */ 914 PerlIO_cleanup(aTHX); 915 #endif 916 917 /* sv_undef needs to stay immortal until after PerlIO_cleanup 918 as currently layers use it rather than Nullsv as a marker 919 for no arg - and will try and SvREFCNT_dec it. 920 */ 921 SvREFCNT(&PL_sv_undef) = 0; 922 SvREADONLY_off(&PL_sv_undef); 923 924 SvREFCNT(&PL_sv_placeholder) = 0; 925 SvREADONLY_off(&PL_sv_placeholder); 926 927 Safefree(PL_origfilename); 928 PL_origfilename = Nullch; 929 Safefree(PL_reg_start_tmp); 930 PL_reg_start_tmp = (char**)NULL; 931 PL_reg_start_tmpl = 0; 932 if (PL_reg_curpm) 933 Safefree(PL_reg_curpm); 934 Safefree(PL_reg_poscache); 935 free_tied_hv_pool(); 936 Safefree(PL_op_mask); 937 Safefree(PL_psig_ptr); 938 PL_psig_ptr = (SV**)NULL; 939 Safefree(PL_psig_name); 940 PL_psig_name = (SV**)NULL; 941 Safefree(PL_bitcount); 942 PL_bitcount = Nullch; 943 Safefree(PL_psig_pend); 944 PL_psig_pend = (int*)NULL; 945 PL_formfeed = Nullsv; 946 Safefree(PL_ofmt); 947 PL_ofmt = Nullch; 948 nuke_stacks(); 949 PL_tainting = FALSE; 950 PL_taint_warn = FALSE; 951 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */ 952 PL_debug = 0; 953 954 DEBUG_P(debprofdump()); 955 #ifdef USE_5005THREADS 956 MUTEX_DESTROY(&PL_strtab_mutex); 957 MUTEX_DESTROY(&PL_sv_mutex); 958 MUTEX_DESTROY(&PL_eval_mutex); 959 MUTEX_DESTROY(&PL_cred_mutex); 960 MUTEX_DESTROY(&PL_fdpid_mutex); 961 COND_DESTROY(&PL_eval_cond); 962 #ifdef EMULATE_ATOMIC_REFCOUNTS 963 MUTEX_DESTROY(&PL_svref_mutex); 964 #endif /* EMULATE_ATOMIC_REFCOUNTS */ 965 966 /* As the penultimate thing, free the non-arena SV for thrsv */ 967 Safefree(SvPVX(PL_thrsv)); 968 Safefree(SvANY(PL_thrsv)); 969 Safefree(PL_thrsv); 970 PL_thrsv = Nullsv; 971 #endif /* USE_5005THREADS */ 972 973 #ifdef USE_REENTRANT_API 974 Perl_reentrant_free(aTHX); 975 #endif 976 977 sv_free_arenas(); 978 979 /* As the absolutely last thing, free the non-arena SV for mess() */ 980 981 if (PL_mess_sv) { 982 /* it could have accumulated taint magic */ 983 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) { 984 MAGIC* mg; 985 MAGIC* moremagic; 986 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) { 987 moremagic = mg->mg_moremagic; 988 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global 989 && mg->mg_len >= 0) 990 Safefree(mg->mg_ptr); 991 Safefree(mg); 992 } 993 } 994 /* we know that type >= SVt_PV */ 995 (void)SvOOK_off(PL_mess_sv); 996 Safefree(SvPVX(PL_mess_sv)); 997 Safefree(SvANY(PL_mess_sv)); 998 Safefree(PL_mess_sv); 999 PL_mess_sv = Nullsv; 1000 } 1001 return STATUS_NATIVE_EXPORT; 1002 } 1003 1004 /* 1005 =for apidoc perl_free 1006 1007 Releases a Perl interpreter. See L<perlembed>. 1008 1009 =cut 1010 */ 1011 1012 void 1013 perl_free(pTHXx) 1014 { 1015 #if defined(WIN32) || defined(NETWARE) 1016 # if defined(PERL_IMPLICIT_SYS) 1017 # ifdef NETWARE 1018 void *host = nw_internal_host; 1019 # else 1020 void *host = w32_internal_host; 1021 # endif 1022 PerlMem_free(aTHXx); 1023 # ifdef NETWARE 1024 nw_delete_internal_host(host); 1025 # else 1026 win32_delete_internal_host(host); 1027 # endif 1028 # else 1029 PerlMem_free(aTHXx); 1030 # endif 1031 #else 1032 PerlMem_free(aTHXx); 1033 #endif 1034 } 1035 1036 void 1037 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr) 1038 { 1039 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry); 1040 PL_exitlist[PL_exitlistlen].fn = fn; 1041 PL_exitlist[PL_exitlistlen].ptr = ptr; 1042 ++PL_exitlistlen; 1043 } 1044 1045 /* 1046 =for apidoc perl_parse 1047 1048 Tells a Perl interpreter to parse a Perl script. See L<perlembed>. 1049 1050 =cut 1051 */ 1052 1053 int 1054 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env) 1055 { 1056 I32 oldscope; 1057 int ret; 1058 dJMPENV; 1059 #ifdef USE_5005THREADS 1060 dTHX; 1061 #endif 1062 1063 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW 1064 #ifdef IAMSUID 1065 #undef IAMSUID 1066 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\ 1067 setuid perl scripts securely.\n"); 1068 #endif 1069 #endif 1070 1071 #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) 1072 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0 1073 * This MUST be done before any hash stores or fetches take place. 1074 * If you set PL_rehash_seed (and assumedly also PL_rehash_seed_set) 1075 * yourself, it is your responsibility to provide a good random seed! 1076 * You can also define PERL_HASH_SEED in compile time, see hv.h. */ 1077 if (!PL_rehash_seed_set) 1078 PL_rehash_seed = get_hash_seed(); 1079 { 1080 char *s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG"); 1081 1082 if (s) { 1083 int i = atoi(s); 1084 1085 if (i == 1) 1086 PerlIO_printf(Perl_debug_log, "HASH_SEED = %"UVuf"\n", 1087 PL_rehash_seed); 1088 } 1089 } 1090 #endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */ 1091 1092 PL_origargc = argc; 1093 PL_origargv = argv; 1094 1095 { 1096 /* Set PL_origalen be the sum of the contiguous argv[] 1097 * elements plus the size of the env in case that it is 1098 * contiguous with the argv[]. This is used in mg.c:mg_set() 1099 * as the maximum modifiable length of $0. In the worst case 1100 * the area we are able to modify is limited to the size of 1101 * the original argv[0]. (See below for 'contiguous', though.) 1102 * --jhi */ 1103 char *s = NULL; 1104 int i; 1105 UV mask = 1106 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0); 1107 /* Do the mask check only if the args seem like aligned. */ 1108 UV aligned = 1109 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0])); 1110 1111 /* See if all the arguments are contiguous in memory. Note 1112 * that 'contiguous' is a loose term because some platforms 1113 * align the argv[] and the envp[]. If the arguments look 1114 * like non-aligned, assume that they are 'strictly' or 1115 * 'traditionally' contiguous. If the arguments look like 1116 * aligned, we just check that they are within aligned 1117 * PTRSIZE bytes. As long as no system has something bizarre 1118 * like the argv[] interleaved with some other data, we are 1119 * fine. (Did I just evoke Murphy's Law?) --jhi */ 1120 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) { 1121 while (*s) s++; 1122 for (i = 1; i < PL_origargc; i++) { 1123 if ((PL_origargv[i] == s + 1 1124 #ifdef OS2 1125 || PL_origargv[i] == s + 2 1126 #endif 1127 ) 1128 || 1129 (aligned && 1130 (PL_origargv[i] > s && 1131 PL_origargv[i] <= 1132 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask))) 1133 ) 1134 { 1135 s = PL_origargv[i]; 1136 while (*s) s++; 1137 } 1138 else 1139 break; 1140 } 1141 } 1142 /* Can we grab env area too to be used as the area for $0? */ 1143 if (PL_origenviron) { 1144 if ((PL_origenviron[0] == s + 1 1145 #ifdef OS2 1146 || (PL_origenviron[0] == s + 9 && (s += 8)) 1147 #endif 1148 ) 1149 || 1150 (aligned && 1151 (PL_origenviron[0] > s && 1152 PL_origenviron[0] <= 1153 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask))) 1154 ) 1155 { 1156 #ifndef OS2 1157 s = PL_origenviron[0]; 1158 while (*s) s++; 1159 #endif 1160 my_setenv("NoNe SuCh", Nullch); 1161 /* Force copy of environment. */ 1162 for (i = 1; PL_origenviron[i]; i++) { 1163 if (PL_origenviron[i] == s + 1 1164 || 1165 (aligned && 1166 (PL_origenviron[i] > s && 1167 PL_origenviron[i] <= 1168 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask))) 1169 ) 1170 { 1171 s = PL_origenviron[i]; 1172 while (*s) s++; 1173 } 1174 else 1175 break; 1176 } 1177 } 1178 } 1179 PL_origalen = s - PL_origargv[0]; 1180 } 1181 1182 if (PL_do_undump) { 1183 1184 /* Come here if running an undumped a.out. */ 1185 1186 PL_origfilename = savepv(argv[0]); 1187 PL_do_undump = FALSE; 1188 cxstack_ix = -1; /* start label stack again */ 1189 init_ids(); 1190 init_postdump_symbols(argc,argv,env); 1191 return 0; 1192 } 1193 1194 if (PL_main_root) { 1195 op_free(PL_main_root); 1196 PL_main_root = Nullop; 1197 } 1198 PL_main_start = Nullop; 1199 SvREFCNT_dec(PL_main_cv); 1200 PL_main_cv = Nullcv; 1201 1202 time(&PL_basetime); 1203 oldscope = PL_scopestack_ix; 1204 PL_dowarn = G_WARN_OFF; 1205 1206 #ifdef PERL_FLEXIBLE_EXCEPTIONS 1207 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit); 1208 #else 1209 JMPENV_PUSH(ret); 1210 #endif 1211 switch (ret) { 1212 case 0: 1213 #ifndef PERL_FLEXIBLE_EXCEPTIONS 1214 parse_body(env,xsinit); 1215 #endif 1216 if (PL_checkav) 1217 call_list(oldscope, PL_checkav); 1218 ret = 0; 1219 break; 1220 case 1: 1221 STATUS_ALL_FAILURE; 1222 /* FALL THROUGH */ 1223 case 2: 1224 /* my_exit() was called */ 1225 while (PL_scopestack_ix > oldscope) 1226 LEAVE; 1227 FREETMPS; 1228 PL_curstash = PL_defstash; 1229 if (PL_checkav) 1230 call_list(oldscope, PL_checkav); 1231 ret = STATUS_NATIVE_EXPORT; 1232 break; 1233 case 3: 1234 PerlIO_printf(Perl_error_log, "panic: top_env\n"); 1235 ret = 1; 1236 break; 1237 } 1238 JMPENV_POP; 1239 return ret; 1240 } 1241 1242 #ifdef PERL_FLEXIBLE_EXCEPTIONS 1243 STATIC void * 1244 S_vparse_body(pTHX_ va_list args) 1245 { 1246 char **env = va_arg(args, char**); 1247 XSINIT_t xsinit = va_arg(args, XSINIT_t); 1248 1249 return parse_body(env, xsinit); 1250 } 1251 #endif 1252 1253 STATIC void * 1254 S_parse_body(pTHX_ char **env, XSINIT_t xsinit) 1255 { 1256 int argc = PL_origargc; 1257 char **argv = PL_origargv; 1258 char *scriptname = NULL; 1259 int fdscript = -1; 1260 VOL bool dosearch = FALSE; 1261 char *validarg = ""; 1262 register SV *sv; 1263 register char *s; 1264 char *cddir = Nullch; 1265 1266 sv_setpvn(PL_linestr,"",0); 1267 sv = newSVpvn("",0); /* first used for -I flags */ 1268 SAVEFREESV(sv); 1269 init_main_stash(); 1270 1271 for (argc--,argv++; argc > 0; argc--,argv++) { 1272 if (argv[0][0] != '-' || !argv[0][1]) 1273 break; 1274 #ifdef DOSUID 1275 if (*validarg) 1276 validarg = " PHOOEY "; 1277 else 1278 validarg = argv[0]; 1279 #endif 1280 s = argv[0]+1; 1281 reswitch: 1282 switch (*s) { 1283 case 'C': 1284 #ifndef PERL_STRICT_CR 1285 case '\r': 1286 #endif 1287 case ' ': 1288 case '0': 1289 case 'F': 1290 case 'a': 1291 case 'c': 1292 case 'd': 1293 case 'D': 1294 case 'h': 1295 case 'i': 1296 case 'l': 1297 case 'M': 1298 case 'm': 1299 case 'n': 1300 case 'p': 1301 case 's': 1302 case 'u': 1303 case 'U': 1304 case 'v': 1305 case 'W': 1306 case 'X': 1307 case 'w': 1308 if ((s = moreswitches(s))) 1309 goto reswitch; 1310 break; 1311 1312 case 't': 1313 CHECK_MALLOC_TOO_LATE_FOR('t'); 1314 if( !PL_tainting ) { 1315 PL_taint_warn = TRUE; 1316 PL_tainting = TRUE; 1317 } 1318 s++; 1319 goto reswitch; 1320 case 'T': 1321 CHECK_MALLOC_TOO_LATE_FOR('T'); 1322 PL_tainting = TRUE; 1323 PL_taint_warn = FALSE; 1324 s++; 1325 goto reswitch; 1326 1327 case 'e': 1328 #ifdef MACOS_TRADITIONAL 1329 /* ignore -e for Dev:Pseudo argument */ 1330 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo")) 1331 break; 1332 #endif 1333 if (PL_euid != PL_uid || PL_egid != PL_gid) 1334 Perl_croak(aTHX_ "No -e allowed in setuid scripts"); 1335 if (!PL_e_script) { 1336 PL_e_script = newSVpvn("",0); 1337 filter_add(read_e_script, NULL); 1338 } 1339 if (*++s) 1340 sv_catpv(PL_e_script, s); 1341 else if (argv[1]) { 1342 sv_catpv(PL_e_script, argv[1]); 1343 argc--,argv++; 1344 } 1345 else 1346 Perl_croak(aTHX_ "No code specified for -e"); 1347 sv_catpv(PL_e_script, "\n"); 1348 break; 1349 1350 case 'I': /* -I handled both here and in moreswitches() */ 1351 forbid_setid("-I"); 1352 if (!*++s && (s=argv[1]) != Nullch) { 1353 argc--,argv++; 1354 } 1355 if (s && *s) { 1356 char *p; 1357 STRLEN len = strlen(s); 1358 p = savepvn(s, len); 1359 incpush(p, TRUE, TRUE, FALSE); 1360 sv_catpvn(sv, "-I", 2); 1361 sv_catpvn(sv, p, len); 1362 sv_catpvn(sv, " ", 1); 1363 Safefree(p); 1364 } 1365 else 1366 Perl_croak(aTHX_ "No directory specified for -I"); 1367 break; 1368 case 'P': 1369 forbid_setid("-P"); 1370 PL_preprocess = TRUE; 1371 s++; 1372 goto reswitch; 1373 case 'S': 1374 forbid_setid("-S"); 1375 dosearch = TRUE; 1376 s++; 1377 goto reswitch; 1378 case 'V': 1379 if (!PL_preambleav) 1380 PL_preambleav = newAV(); 1381 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0)); 1382 if (*++s != ':') { 1383 PL_Sv = newSVpv("print myconfig();",0); 1384 #ifdef VMS 1385 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\","); 1386 #else 1387 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\","); 1388 #endif 1389 sv_catpv(PL_Sv,"\" Compile-time options:"); 1390 # ifdef DEBUGGING 1391 sv_catpv(PL_Sv," DEBUGGING"); 1392 # endif 1393 # ifdef MULTIPLICITY 1394 sv_catpv(PL_Sv," MULTIPLICITY"); 1395 # endif 1396 # ifdef USE_5005THREADS 1397 sv_catpv(PL_Sv," USE_5005THREADS"); 1398 # endif 1399 # ifdef USE_ITHREADS 1400 sv_catpv(PL_Sv," USE_ITHREADS"); 1401 # endif 1402 # ifdef USE_64_BIT_INT 1403 sv_catpv(PL_Sv," USE_64_BIT_INT"); 1404 # endif 1405 # ifdef USE_64_BIT_ALL 1406 sv_catpv(PL_Sv," USE_64_BIT_ALL"); 1407 # endif 1408 # ifdef USE_LONG_DOUBLE 1409 sv_catpv(PL_Sv," USE_LONG_DOUBLE"); 1410 # endif 1411 # ifdef USE_LARGE_FILES 1412 sv_catpv(PL_Sv," USE_LARGE_FILES"); 1413 # endif 1414 # ifdef USE_SOCKS 1415 sv_catpv(PL_Sv," USE_SOCKS"); 1416 # endif 1417 # ifdef PERL_IMPLICIT_CONTEXT 1418 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT"); 1419 # endif 1420 # ifdef PERL_IMPLICIT_SYS 1421 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS"); 1422 # endif 1423 sv_catpv(PL_Sv,"\\n\","); 1424 1425 #if defined(LOCAL_PATCH_COUNT) 1426 if (LOCAL_PATCH_COUNT > 0) { 1427 int i; 1428 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\","); 1429 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) { 1430 if (PL_localpatches[i]) 1431 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]); 1432 } 1433 } 1434 #endif 1435 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME); 1436 #ifdef __DATE__ 1437 # ifdef __TIME__ 1438 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__); 1439 # else 1440 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__); 1441 # endif 1442 #endif 1443 sv_catpv(PL_Sv, "; \ 1444 $\"=\"\\n \"; \ 1445 @env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; "); 1446 #ifdef __CYGWIN__ 1447 sv_catpv(PL_Sv,"\ 1448 push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";"); 1449 #endif 1450 sv_catpv(PL_Sv, "\ 1451 print \" \\%ENV:\\n @env\\n\" if @env; \ 1452 print \" \\@INC:\\n @INC\\n\";"); 1453 } 1454 else { 1455 PL_Sv = newSVpv("config_vars(qw(",0); 1456 sv_catpv(PL_Sv, ++s); 1457 sv_catpv(PL_Sv, "))"); 1458 s += strlen(s); 1459 } 1460 av_push(PL_preambleav, PL_Sv); 1461 scriptname = BIT_BUCKET; /* don't look for script or read stdin */ 1462 goto reswitch; 1463 case 'x': 1464 PL_doextract = TRUE; 1465 s++; 1466 if (*s) 1467 cddir = s; 1468 break; 1469 case 0: 1470 break; 1471 case '-': 1472 if (!*++s || isSPACE(*s)) { 1473 argc--,argv++; 1474 goto switch_end; 1475 } 1476 /* catch use of gnu style long options */ 1477 if (strEQ(s, "version")) { 1478 s = "v"; 1479 goto reswitch; 1480 } 1481 if (strEQ(s, "help")) { 1482 s = "h"; 1483 goto reswitch; 1484 } 1485 s--; 1486 /* FALL THROUGH */ 1487 default: 1488 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s); 1489 } 1490 } 1491 switch_end: 1492 sv_setsv(get_sv("/", TRUE), PL_rs); 1493 1494 if ( 1495 #ifndef SECURE_INTERNAL_GETENV 1496 !PL_tainting && 1497 #endif 1498 (s = PerlEnv_getenv("PERL5OPT"))) 1499 { 1500 char *popt = s; 1501 while (isSPACE(*s)) 1502 s++; 1503 if (*s == '-' && *(s+1) == 'T') { 1504 CHECK_MALLOC_TOO_LATE_FOR('T'); 1505 PL_tainting = TRUE; 1506 PL_taint_warn = FALSE; 1507 } 1508 else { 1509 char *popt_copy = Nullch; 1510 while (s && *s) { 1511 char *d; 1512 while (isSPACE(*s)) 1513 s++; 1514 if (*s == '-') { 1515 s++; 1516 if (isSPACE(*s)) 1517 continue; 1518 } 1519 d = s; 1520 if (!*s) 1521 break; 1522 if (!strchr("DIMUdmtw", *s)) 1523 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s); 1524 while (++s && *s) { 1525 if (isSPACE(*s)) { 1526 if (!popt_copy) { 1527 popt_copy = SvPVX(sv_2mortal(newSVpv(popt,0))); 1528 s = popt_copy + (s - popt); 1529 d = popt_copy + (d - popt); 1530 } 1531 *s++ = '\0'; 1532 break; 1533 } 1534 } 1535 if (*d == 't') { 1536 if( !PL_tainting ) { 1537 PL_taint_warn = TRUE; 1538 PL_tainting = TRUE; 1539 } 1540 } else { 1541 moreswitches(d); 1542 } 1543 } 1544 } 1545 } 1546 1547 if (PL_taint_warn && PL_dowarn != G_WARN_ALL_OFF) { 1548 PL_compiling.cop_warnings = newSVpvn(WARN_TAINTstring, WARNsize); 1549 } 1550 1551 if (!scriptname) 1552 scriptname = argv[0]; 1553 if (PL_e_script) { 1554 argc++,argv--; 1555 scriptname = BIT_BUCKET; /* don't look for script or read stdin */ 1556 } 1557 else if (scriptname == Nullch) { 1558 #ifdef MSDOS 1559 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) ) 1560 moreswitches("h"); 1561 #endif 1562 scriptname = "-"; 1563 } 1564 1565 init_perllib(); 1566 1567 open_script(scriptname,dosearch,sv,&fdscript); 1568 1569 validate_suid(validarg, scriptname,fdscript); 1570 1571 #ifndef PERL_MICRO 1572 #if defined(SIGCHLD) || defined(SIGCLD) 1573 { 1574 #ifndef SIGCHLD 1575 # define SIGCHLD SIGCLD 1576 #endif 1577 Sighandler_t sigstate = rsignal_state(SIGCHLD); 1578 if (sigstate == SIG_IGN) { 1579 if (ckWARN(WARN_SIGNAL)) 1580 Perl_warner(aTHX_ packWARN(WARN_SIGNAL), 1581 "Can't ignore signal CHLD, forcing to default"); 1582 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL); 1583 } 1584 } 1585 #endif 1586 #endif 1587 1588 #ifdef MACOS_TRADITIONAL 1589 if (PL_doextract || gMacPerl_AlwaysExtract) { 1590 #else 1591 if (PL_doextract) { 1592 #endif 1593 find_beginning(); 1594 if (cddir && PerlDir_chdir(cddir) < 0) 1595 Perl_croak(aTHX_ "Can't chdir to %s",cddir); 1596 1597 } 1598 1599 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0); 1600 sv_upgrade((SV *)PL_compcv, SVt_PVCV); 1601 CvUNIQUE_on(PL_compcv); 1602 1603 CvPADLIST(PL_compcv) = pad_new(0); 1604 #ifdef USE_5005THREADS 1605 CvOWNER(PL_compcv) = 0; 1606 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex); 1607 MUTEX_INIT(CvMUTEXP(PL_compcv)); 1608 #endif /* USE_5005THREADS */ 1609 1610 boot_core_PerlIO(); 1611 boot_core_UNIVERSAL(); 1612 boot_core_xsutils(); 1613 1614 if (xsinit) 1615 (*xsinit)(aTHX); /* in case linked C routines want magical variables */ 1616 #ifndef PERL_MICRO 1617 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC) 1618 init_os_extras(); 1619 #endif 1620 #endif 1621 1622 #ifdef USE_SOCKS 1623 # ifdef HAS_SOCKS5_INIT 1624 socks5_init(argv[0]); 1625 # else 1626 SOCKSinit(argv[0]); 1627 # endif 1628 #endif 1629 1630 init_predump_symbols(); 1631 /* init_postdump_symbols not currently designed to be called */ 1632 /* more than once (ENV isn't cleared first, for example) */ 1633 /* But running with -u leaves %ENV & @ARGV undefined! XXX */ 1634 if (!PL_do_undump) 1635 init_postdump_symbols(argc,argv,env); 1636 1637 /* PL_unicode is turned on by -C or by $ENV{PERL_UNICODE}. 1638 * PL_utf8locale is conditionally turned on by 1639 * locale.c:Perl_init_i18nl10n() if the environment 1640 * look like the user wants to use UTF-8. */ 1641 if (PL_unicode) { 1642 /* Requires init_predump_symbols(). */ 1643 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) { 1644 IO* io; 1645 PerlIO* fp; 1646 SV* sv; 1647 1648 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR 1649 * and the default open disciplines. */ 1650 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) && 1651 PL_stdingv && (io = GvIO(PL_stdingv)) && 1652 (fp = IoIFP(io))) 1653 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8"); 1654 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) && 1655 PL_defoutgv && (io = GvIO(PL_defoutgv)) && 1656 (fp = IoOFP(io))) 1657 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8"); 1658 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) && 1659 PL_stderrgv && (io = GvIO(PL_stderrgv)) && 1660 (fp = IoOFP(io))) 1661 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8"); 1662 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) && 1663 (sv = GvSV(gv_fetchpv("\017PEN", TRUE, SVt_PV)))) { 1664 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG; 1665 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG; 1666 if (in) { 1667 if (out) 1668 sv_setpvn(sv, ":utf8\0:utf8", 11); 1669 else 1670 sv_setpvn(sv, ":utf8\0", 6); 1671 } 1672 else if (out) 1673 sv_setpvn(sv, "\0:utf8", 6); 1674 SvSETMAGIC(sv); 1675 } 1676 } 1677 } 1678 1679 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) { 1680 if (strEQ(s, "unsafe")) 1681 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG; 1682 else if (strEQ(s, "safe")) 1683 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG; 1684 else 1685 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s); 1686 } 1687 1688 init_lexer(); 1689 1690 /* now parse the script */ 1691 1692 SETERRNO(0,SS_NORMAL); 1693 PL_error_count = 0; 1694 #ifdef MACOS_TRADITIONAL 1695 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) { 1696 if (PL_minus_c) 1697 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename)); 1698 else { 1699 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n", 1700 MacPerl_MPWFileName(PL_origfilename)); 1701 } 1702 } 1703 #else 1704 if (yyparse() || PL_error_count) { 1705 if (PL_minus_c) 1706 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename); 1707 else { 1708 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n", 1709 PL_origfilename); 1710 } 1711 } 1712 #endif 1713 CopLINE_set(PL_curcop, 0); 1714 PL_curstash = PL_defstash; 1715 PL_preprocess = FALSE; 1716 if (PL_e_script) { 1717 SvREFCNT_dec(PL_e_script); 1718 PL_e_script = Nullsv; 1719 } 1720 1721 if (PL_do_undump) 1722 my_unexec(); 1723 1724 if (isWARN_ONCE) { 1725 SAVECOPFILE(PL_curcop); 1726 SAVECOPLINE(PL_curcop); 1727 gv_check(PL_defstash); 1728 } 1729 1730 LEAVE; 1731 FREETMPS; 1732 1733 #ifdef MYMALLOC 1734 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2) 1735 dump_mstats("after compilation:"); 1736 #endif 1737 1738 ENTER; 1739 PL_restartop = 0; 1740 return NULL; 1741 } 1742 1743 /* 1744 =for apidoc perl_run 1745 1746 Tells a Perl interpreter to run. See L<perlembed>. 1747 1748 =cut 1749 */ 1750 1751 int 1752 perl_run(pTHXx) 1753 { 1754 I32 oldscope; 1755 int ret = 0; 1756 dJMPENV; 1757 #ifdef USE_5005THREADS 1758 dTHX; 1759 #endif 1760 1761 oldscope = PL_scopestack_ix; 1762 #ifdef VMS 1763 VMSISH_HUSHED = 0; 1764 #endif 1765 1766 #ifdef PERL_FLEXIBLE_EXCEPTIONS 1767 redo_body: 1768 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope); 1769 #else 1770 JMPENV_PUSH(ret); 1771 #endif 1772 switch (ret) { 1773 case 1: 1774 cxstack_ix = -1; /* start context stack again */ 1775 goto redo_body; 1776 case 0: /* normal completion */ 1777 #ifndef PERL_FLEXIBLE_EXCEPTIONS 1778 redo_body: 1779 run_body(oldscope); 1780 #endif 1781 /* FALL THROUGH */ 1782 case 2: /* my_exit() */ 1783 while (PL_scopestack_ix > oldscope) 1784 LEAVE; 1785 FREETMPS; 1786 PL_curstash = PL_defstash; 1787 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) && 1788 PL_endav && !PL_minus_c) 1789 call_list(oldscope, PL_endav); 1790 #ifdef MYMALLOC 1791 if (PerlEnv_getenv("PERL_DEBUG_MSTATS")) 1792 dump_mstats("after execution: "); 1793 #endif 1794 ret = STATUS_NATIVE_EXPORT; 1795 break; 1796 case 3: 1797 if (PL_restartop) { 1798 POPSTACK_TO(PL_mainstack); 1799 goto redo_body; 1800 } 1801 PerlIO_printf(Perl_error_log, "panic: restartop\n"); 1802 FREETMPS; 1803 ret = 1; 1804 break; 1805 } 1806 1807 JMPENV_POP; 1808 return ret; 1809 } 1810 1811 #ifdef PERL_FLEXIBLE_EXCEPTIONS 1812 STATIC void * 1813 S_vrun_body(pTHX_ va_list args) 1814 { 1815 I32 oldscope = va_arg(args, I32); 1816 1817 return run_body(oldscope); 1818 } 1819 #endif 1820 1821 1822 STATIC void * 1823 S_run_body(pTHX_ I32 oldscope) 1824 { 1825 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n", 1826 PL_sawampersand ? "Enabling" : "Omitting")); 1827 1828 if (!PL_restartop) { 1829 DEBUG_x(dump_all()); 1830 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n")); 1831 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n", 1832 PTR2UV(thr))); 1833 1834 if (PL_minus_c) { 1835 #ifdef MACOS_TRADITIONAL 1836 PerlIO_printf(Perl_error_log, "%s%s syntax OK\n", 1837 (gMacPerl_ErrorFormat ? "# " : ""), 1838 MacPerl_MPWFileName(PL_origfilename)); 1839 #else 1840 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename); 1841 #endif 1842 my_exit(0); 1843 } 1844 if (PERLDB_SINGLE && PL_DBsingle) 1845 sv_setiv(PL_DBsingle, 1); 1846 if (PL_initav) 1847 call_list(oldscope, PL_initav); 1848 } 1849 1850 /* do it */ 1851 1852 if (PL_restartop) { 1853 PL_op = PL_restartop; 1854 PL_restartop = 0; 1855 CALLRUNOPS(aTHX); 1856 } 1857 else if (PL_main_start) { 1858 CvDEPTH(PL_main_cv) = 1; 1859 PL_op = PL_main_start; 1860 CALLRUNOPS(aTHX); 1861 } 1862 1863 my_exit(0); 1864 /* NOTREACHED */ 1865 return NULL; 1866 } 1867 1868 /* 1869 =head1 SV Manipulation Functions 1870 1871 =for apidoc p||get_sv 1872 1873 Returns the SV of the specified Perl scalar. If C<create> is set and the 1874 Perl variable does not exist then it will be created. If C<create> is not 1875 set and the variable does not exist then NULL is returned. 1876 1877 =cut 1878 */ 1879 1880 SV* 1881 Perl_get_sv(pTHX_ const char *name, I32 create) 1882 { 1883 GV *gv; 1884 #ifdef USE_5005THREADS 1885 if (name[1] == '\0' && !isALPHA(name[0])) { 1886 PADOFFSET tmp = find_threadsv(name); 1887 if (tmp != NOT_IN_PAD) 1888 return THREADSV(tmp); 1889 } 1890 #endif /* USE_5005THREADS */ 1891 gv = gv_fetchpv(name, create, SVt_PV); 1892 if (gv) 1893 return GvSV(gv); 1894 return Nullsv; 1895 } 1896 1897 /* 1898 =head1 Array Manipulation Functions 1899 1900 =for apidoc p||get_av 1901 1902 Returns the AV of the specified Perl array. If C<create> is set and the 1903 Perl variable does not exist then it will be created. If C<create> is not 1904 set and the variable does not exist then NULL is returned. 1905 1906 =cut 1907 */ 1908 1909 AV* 1910 Perl_get_av(pTHX_ const char *name, I32 create) 1911 { 1912 GV* gv = gv_fetchpv(name, create, SVt_PVAV); 1913 if (create) 1914 return GvAVn(gv); 1915 if (gv) 1916 return GvAV(gv); 1917 return Nullav; 1918 } 1919 1920 /* 1921 =head1 Hash Manipulation Functions 1922 1923 =for apidoc p||get_hv 1924 1925 Returns the HV of the specified Perl hash. If C<create> is set and the 1926 Perl variable does not exist then it will be created. If C<create> is not 1927 set and the variable does not exist then NULL is returned. 1928 1929 =cut 1930 */ 1931 1932 HV* 1933 Perl_get_hv(pTHX_ const char *name, I32 create) 1934 { 1935 GV* gv = gv_fetchpv(name, create, SVt_PVHV); 1936 if (create) 1937 return GvHVn(gv); 1938 if (gv) 1939 return GvHV(gv); 1940 return Nullhv; 1941 } 1942 1943 /* 1944 =head1 CV Manipulation Functions 1945 1946 =for apidoc p||get_cv 1947 1948 Returns the CV of the specified Perl subroutine. If C<create> is set and 1949 the Perl subroutine does not exist then it will be declared (which has the 1950 same effect as saying C<sub name;>). If C<create> is not set and the 1951 subroutine does not exist then NULL is returned. 1952 1953 =cut 1954 */ 1955 1956 CV* 1957 Perl_get_cv(pTHX_ const char *name, I32 create) 1958 { 1959 GV* gv = gv_fetchpv(name, create, SVt_PVCV); 1960 /* XXX unsafe for threads if eval_owner isn't held */ 1961 /* XXX this is probably not what they think they're getting. 1962 * It has the same effect as "sub name;", i.e. just a forward 1963 * declaration! */ 1964 if (create && !GvCVu(gv)) 1965 return newSUB(start_subparse(FALSE, 0), 1966 newSVOP(OP_CONST, 0, newSVpv(name,0)), 1967 Nullop, 1968 Nullop); 1969 if (gv) 1970 return GvCVu(gv); 1971 return Nullcv; 1972 } 1973 1974 /* Be sure to refetch the stack pointer after calling these routines. */ 1975 1976 /* 1977 1978 =head1 Callback Functions 1979 1980 =for apidoc p||call_argv 1981 1982 Performs a callback to the specified Perl sub. See L<perlcall>. 1983 1984 =cut 1985 */ 1986 1987 I32 1988 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv) 1989 1990 /* See G_* flags in cop.h */ 1991 /* null terminated arg list */ 1992 { 1993 dSP; 1994 1995 PUSHMARK(SP); 1996 if (argv) { 1997 while (*argv) { 1998 XPUSHs(sv_2mortal(newSVpv(*argv,0))); 1999 argv++; 2000 } 2001 PUTBACK; 2002 } 2003 return call_pv(sub_name, flags); 2004 } 2005 2006 /* 2007 =for apidoc p||call_pv 2008 2009 Performs a callback to the specified Perl sub. See L<perlcall>. 2010 2011 =cut 2012 */ 2013 2014 I32 2015 Perl_call_pv(pTHX_ const char *sub_name, I32 flags) 2016 /* name of the subroutine */ 2017 /* See G_* flags in cop.h */ 2018 { 2019 return call_sv((SV*)get_cv(sub_name, TRUE), flags); 2020 } 2021 2022 /* 2023 =for apidoc p||call_method 2024 2025 Performs a callback to the specified Perl method. The blessed object must 2026 be on the stack. See L<perlcall>. 2027 2028 =cut 2029 */ 2030 2031 I32 2032 Perl_call_method(pTHX_ const char *methname, I32 flags) 2033 /* name of the subroutine */ 2034 /* See G_* flags in cop.h */ 2035 { 2036 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD); 2037 } 2038 2039 /* May be called with any of a CV, a GV, or an SV containing the name. */ 2040 /* 2041 =for apidoc p||call_sv 2042 2043 Performs a callback to the Perl sub whose name is in the SV. See 2044 L<perlcall>. 2045 2046 =cut 2047 */ 2048 2049 I32 2050 Perl_call_sv(pTHX_ SV *sv, I32 flags) 2051 /* See G_* flags in cop.h */ 2052 { 2053 dSP; 2054 LOGOP myop; /* fake syntax tree node */ 2055 UNOP method_op; 2056 I32 oldmark; 2057 volatile I32 retval = 0; 2058 I32 oldscope; 2059 bool oldcatch = CATCH_GET; 2060 int ret; 2061 OP* oldop = PL_op; 2062 dJMPENV; 2063 2064 if (flags & G_DISCARD) { 2065 ENTER; 2066 SAVETMPS; 2067 } 2068 2069 Zero(&myop, 1, LOGOP); 2070 myop.op_next = Nullop; 2071 if (!(flags & G_NOARGS)) 2072 myop.op_flags |= OPf_STACKED; 2073 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID : 2074 (flags & G_ARRAY) ? OPf_WANT_LIST : 2075 OPf_WANT_SCALAR); 2076 SAVEOP(); 2077 PL_op = (OP*)&myop; 2078 2079 EXTEND(PL_stack_sp, 1); 2080 *++PL_stack_sp = sv; 2081 oldmark = TOPMARK; 2082 oldscope = PL_scopestack_ix; 2083 2084 if (PERLDB_SUB && PL_curstash != PL_debstash 2085 /* Handle first BEGIN of -d. */ 2086 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub))) 2087 /* Try harder, since this may have been a sighandler, thus 2088 * curstash may be meaningless. */ 2089 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash) 2090 && !(flags & G_NODEBUG)) 2091 PL_op->op_private |= OPpENTERSUB_DB; 2092 2093 if (flags & G_METHOD) { 2094 Zero(&method_op, 1, UNOP); 2095 method_op.op_next = PL_op; 2096 method_op.op_ppaddr = PL_ppaddr[OP_METHOD]; 2097 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB]; 2098 PL_op = (OP*)&method_op; 2099 } 2100 2101 if (!(flags & G_EVAL)) { 2102 CATCH_SET(TRUE); 2103 call_body((OP*)&myop, FALSE); 2104 retval = PL_stack_sp - (PL_stack_base + oldmark); 2105 CATCH_SET(oldcatch); 2106 } 2107 else { 2108 myop.op_other = (OP*)&myop; 2109 PL_markstack_ptr--; 2110 /* we're trying to emulate pp_entertry() here */ 2111 { 2112 register PERL_CONTEXT *cx; 2113 I32 gimme = GIMME_V; 2114 2115 ENTER; 2116 SAVETMPS; 2117 2118 push_return(Nullop); 2119 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp); 2120 PUSHEVAL(cx, 0, 0); 2121 PL_eval_root = PL_op; /* Only needed so that goto works right. */ 2122 2123 PL_in_eval = EVAL_INEVAL; 2124 if (flags & G_KEEPERR) 2125 PL_in_eval |= EVAL_KEEPERR; 2126 else 2127 sv_setpv(ERRSV,""); 2128 } 2129 PL_markstack_ptr++; 2130 2131 #ifdef PERL_FLEXIBLE_EXCEPTIONS 2132 redo_body: 2133 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body), 2134 (OP*)&myop, FALSE); 2135 #else 2136 JMPENV_PUSH(ret); 2137 #endif 2138 switch (ret) { 2139 case 0: 2140 #ifndef PERL_FLEXIBLE_EXCEPTIONS 2141 redo_body: 2142 call_body((OP*)&myop, FALSE); 2143 #endif 2144 retval = PL_stack_sp - (PL_stack_base + oldmark); 2145 if (!(flags & G_KEEPERR)) 2146 sv_setpv(ERRSV,""); 2147 break; 2148 case 1: 2149 STATUS_ALL_FAILURE; 2150 /* FALL THROUGH */ 2151 case 2: 2152 /* my_exit() was called */ 2153 PL_curstash = PL_defstash; 2154 FREETMPS; 2155 JMPENV_POP; 2156 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) 2157 Perl_croak(aTHX_ "Callback called exit"); 2158 my_exit_jump(); 2159 /* NOTREACHED */ 2160 case 3: 2161 if (PL_restartop) { 2162 PL_op = PL_restartop; 2163 PL_restartop = 0; 2164 goto redo_body; 2165 } 2166 PL_stack_sp = PL_stack_base + oldmark; 2167 if (flags & G_ARRAY) 2168 retval = 0; 2169 else { 2170 retval = 1; 2171 *++PL_stack_sp = &PL_sv_undef; 2172 } 2173 break; 2174 } 2175 2176 if (PL_scopestack_ix > oldscope) { 2177 SV **newsp; 2178 PMOP *newpm; 2179 I32 gimme; 2180 register PERL_CONTEXT *cx; 2181 I32 optype; 2182 2183 POPBLOCK(cx,newpm); 2184 POPEVAL(cx); 2185 pop_return(); 2186 PL_curpm = newpm; 2187 LEAVE; 2188 } 2189 JMPENV_POP; 2190 } 2191 2192 if (flags & G_DISCARD) { 2193 PL_stack_sp = PL_stack_base + oldmark; 2194 retval = 0; 2195 FREETMPS; 2196 LEAVE; 2197 } 2198 PL_op = oldop; 2199 return retval; 2200 } 2201 2202 #ifdef PERL_FLEXIBLE_EXCEPTIONS 2203 STATIC void * 2204 S_vcall_body(pTHX_ va_list args) 2205 { 2206 OP *myop = va_arg(args, OP*); 2207 int is_eval = va_arg(args, int); 2208 2209 call_body(myop, is_eval); 2210 return NULL; 2211 } 2212 #endif 2213 2214 STATIC void 2215 S_call_body(pTHX_ OP *myop, int is_eval) 2216 { 2217 if (PL_op == myop) { 2218 if (is_eval) 2219 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */ 2220 else 2221 PL_op = Perl_pp_entersub(aTHX); /* this does */ 2222 } 2223 if (PL_op) 2224 CALLRUNOPS(aTHX); 2225 } 2226 2227 /* Eval a string. The G_EVAL flag is always assumed. */ 2228 2229 /* 2230 =for apidoc p||eval_sv 2231 2232 Tells Perl to C<eval> the string in the SV. 2233 2234 =cut 2235 */ 2236 2237 I32 2238 Perl_eval_sv(pTHX_ SV *sv, I32 flags) 2239 2240 /* See G_* flags in cop.h */ 2241 { 2242 dSP; 2243 UNOP myop; /* fake syntax tree node */ 2244 volatile I32 oldmark = SP - PL_stack_base; 2245 volatile I32 retval = 0; 2246 I32 oldscope; 2247 int ret; 2248 OP* oldop = PL_op; 2249 dJMPENV; 2250 2251 if (flags & G_DISCARD) { 2252 ENTER; 2253 SAVETMPS; 2254 } 2255 2256 SAVEOP(); 2257 PL_op = (OP*)&myop; 2258 Zero(PL_op, 1, UNOP); 2259 EXTEND(PL_stack_sp, 1); 2260 *++PL_stack_sp = sv; 2261 oldscope = PL_scopestack_ix; 2262 2263 if (!(flags & G_NOARGS)) 2264 myop.op_flags = OPf_STACKED; 2265 myop.op_next = Nullop; 2266 myop.op_type = OP_ENTEREVAL; 2267 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID : 2268 (flags & G_ARRAY) ? OPf_WANT_LIST : 2269 OPf_WANT_SCALAR); 2270 if (flags & G_KEEPERR) 2271 myop.op_flags |= OPf_SPECIAL; 2272 2273 #ifdef PERL_FLEXIBLE_EXCEPTIONS 2274 redo_body: 2275 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body), 2276 (OP*)&myop, TRUE); 2277 #else 2278 JMPENV_PUSH(ret); 2279 #endif 2280 switch (ret) { 2281 case 0: 2282 #ifndef PERL_FLEXIBLE_EXCEPTIONS 2283 redo_body: 2284 call_body((OP*)&myop,TRUE); 2285 #endif 2286 retval = PL_stack_sp - (PL_stack_base + oldmark); 2287 if (!(flags & G_KEEPERR)) 2288 sv_setpv(ERRSV,""); 2289 break; 2290 case 1: 2291 STATUS_ALL_FAILURE; 2292 /* FALL THROUGH */ 2293 case 2: 2294 /* my_exit() was called */ 2295 PL_curstash = PL_defstash; 2296 FREETMPS; 2297 JMPENV_POP; 2298 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) 2299 Perl_croak(aTHX_ "Callback called exit"); 2300 my_exit_jump(); 2301 /* NOTREACHED */ 2302 case 3: 2303 if (PL_restartop) { 2304 PL_op = PL_restartop; 2305 PL_restartop = 0; 2306 goto redo_body; 2307 } 2308 PL_stack_sp = PL_stack_base + oldmark; 2309 if (flags & G_ARRAY) 2310 retval = 0; 2311 else { 2312 retval = 1; 2313 *++PL_stack_sp = &PL_sv_undef; 2314 } 2315 break; 2316 } 2317 2318 JMPENV_POP; 2319 if (flags & G_DISCARD) { 2320 PL_stack_sp = PL_stack_base + oldmark; 2321 retval = 0; 2322 FREETMPS; 2323 LEAVE; 2324 } 2325 PL_op = oldop; 2326 return retval; 2327 } 2328 2329 /* 2330 =for apidoc p||eval_pv 2331 2332 Tells Perl to C<eval> the given string and return an SV* result. 2333 2334 =cut 2335 */ 2336 2337 SV* 2338 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error) 2339 { 2340 dSP; 2341 SV* sv = newSVpv(p, 0); 2342 2343 eval_sv(sv, G_SCALAR); 2344 SvREFCNT_dec(sv); 2345 2346 SPAGAIN; 2347 sv = POPs; 2348 PUTBACK; 2349 2350 if (croak_on_error && SvTRUE(ERRSV)) { 2351 STRLEN n_a; 2352 Perl_croak(aTHX_ SvPVx(ERRSV, n_a)); 2353 } 2354 2355 return sv; 2356 } 2357 2358 /* Require a module. */ 2359 2360 /* 2361 =head1 Embedding Functions 2362 2363 =for apidoc p||require_pv 2364 2365 Tells Perl to C<require> the file named by the string argument. It is 2366 analogous to the Perl code C<eval "require '$file'">. It's even 2367 implemented that way; consider using load_module instead. 2368 2369 =cut */ 2370 2371 void 2372 Perl_require_pv(pTHX_ const char *pv) 2373 { 2374 SV* sv; 2375 dSP; 2376 PUSHSTACKi(PERLSI_REQUIRE); 2377 PUTBACK; 2378 sv = sv_newmortal(); 2379 sv_setpv(sv, "require '"); 2380 sv_catpv(sv, pv); 2381 sv_catpv(sv, "'"); 2382 eval_sv(sv, G_DISCARD); 2383 SPAGAIN; 2384 POPSTACK; 2385 } 2386 2387 void 2388 Perl_magicname(pTHX_ char *sym, char *name, I32 namlen) 2389 { 2390 register GV *gv; 2391 2392 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV))) 2393 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen); 2394 } 2395 2396 STATIC void 2397 S_usage(pTHX_ char *name) /* XXX move this out into a module ? */ 2398 { 2399 /* This message really ought to be max 23 lines. 2400 * Removed -h because the user already knows that option. Others? */ 2401 2402 static char *usage_msg[] = { 2403 "-0[octal] specify record separator (\\0, if no argument)", 2404 "-a autosplit mode with -n or -p (splits $_ into @F)", 2405 "-C[number/list] enables the listed Unicode features", 2406 "-c check syntax only (runs BEGIN and CHECK blocks)", 2407 "-d[:debugger] run program under debugger", 2408 "-D[number/list] set debugging flags (argument is a bit mask or alphabets)", 2409 "-e program one line of program (several -e's allowed, omit programfile)", 2410 "-F/pattern/ split() pattern for -a switch (//'s are optional)", 2411 "-i[extension] edit <> files in place (makes backup if extension supplied)", 2412 "-Idirectory specify @INC/#include directory (several -I's allowed)", 2413 "-l[octal] enable line ending processing, specifies line terminator", 2414 "-[mM][-]module execute `use/no module...' before executing program", 2415 "-n assume 'while (<>) { ... }' loop around program", 2416 "-p assume loop like -n but print line also, like sed", 2417 "-P run program through C preprocessor before compilation", 2418 "-s enable rudimentary parsing for switches after programfile", 2419 "-S look for programfile using PATH environment variable", 2420 "-t enable tainting warnings", 2421 "-T enable tainting checks", 2422 "-u dump core after parsing program", 2423 "-U allow unsafe operations", 2424 "-v print version, subversion (includes VERY IMPORTANT perl info)", 2425 "-V[:variable] print configuration summary (or a single Config.pm variable)", 2426 "-w enable many useful warnings (RECOMMENDED)", 2427 "-W enable all warnings", 2428 "-x[directory] strip off text before #!perl line and perhaps cd to directory", 2429 "-X disable all warnings", 2430 "\n", 2431 NULL 2432 }; 2433 char **p = usage_msg; 2434 2435 PerlIO_printf(PerlIO_stdout(), 2436 "\nUsage: %s [switches] [--] [programfile] [arguments]", 2437 name); 2438 while (*p) 2439 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++); 2440 } 2441 2442 /* convert a string of -D options (or digits) into an int. 2443 * sets *s to point to the char after the options */ 2444 2445 #ifdef DEBUGGING 2446 int 2447 Perl_get_debug_opts(pTHX_ char **s) 2448 { 2449 int i = 0; 2450 if (isALPHA(**s)) { 2451 /* if adding extra options, remember to update DEBUG_MASK */ 2452 static char debopts[] = "psltocPmfrxu HXDSTRJvC"; 2453 2454 for (; isALNUM(**s); (*s)++) { 2455 char *d = strchr(debopts,**s); 2456 if (d) 2457 i |= 1 << (d - debopts); 2458 else if (ckWARN_d(WARN_DEBUGGING)) 2459 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING), 2460 "invalid option -D%c\n", **s); 2461 } 2462 } 2463 else { 2464 i = atoi(*s); 2465 for (; isALNUM(**s); (*s)++) ; 2466 } 2467 # ifdef EBCDIC 2468 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING)) 2469 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING), 2470 "-Dp not implemented on this platform\n"); 2471 # endif 2472 return i; 2473 } 2474 #endif 2475 2476 /* This routine handles any switches that can be given during run */ 2477 2478 char * 2479 Perl_moreswitches(pTHX_ char *s) 2480 { 2481 STRLEN numlen; 2482 UV rschar; 2483 2484 switch (*s) { 2485 case '0': 2486 { 2487 I32 flags = 0; 2488 2489 SvREFCNT_dec(PL_rs); 2490 if (s[1] == 'x' && s[2]) { 2491 char *e; 2492 U8 *tmps; 2493 2494 for (s += 2, e = s; *e; e++); 2495 numlen = e - s; 2496 flags = PERL_SCAN_SILENT_ILLDIGIT; 2497 rschar = (U32)grok_hex(s, &numlen, &flags, NULL); 2498 if (s + numlen < e) { 2499 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */ 2500 numlen = 0; 2501 s--; 2502 } 2503 PL_rs = newSVpvn("", 0); 2504 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1)); 2505 tmps = (U8*)SvPVX(PL_rs); 2506 uvchr_to_utf8(tmps, rschar); 2507 SvCUR_set(PL_rs, UNISKIP(rschar)); 2508 SvUTF8_on(PL_rs); 2509 } 2510 else { 2511 numlen = 4; 2512 rschar = (U32)grok_oct(s, &numlen, &flags, NULL); 2513 if (rschar & ~((U8)~0)) 2514 PL_rs = &PL_sv_undef; 2515 else if (!rschar && numlen >= 2) 2516 PL_rs = newSVpvn("", 0); 2517 else { 2518 char ch = (char)rschar; 2519 PL_rs = newSVpvn(&ch, 1); 2520 } 2521 } 2522 return s + numlen; 2523 } 2524 case 'C': 2525 s++; 2526 PL_unicode = parse_unicode_opts(&s); 2527 return s; 2528 case 'F': 2529 PL_minus_F = TRUE; 2530 PL_splitstr = ++s; 2531 while (*s && !isSPACE(*s)) ++s; 2532 *s = '\0'; 2533 PL_splitstr = savepv(PL_splitstr); 2534 return s; 2535 case 'a': 2536 PL_minus_a = TRUE; 2537 s++; 2538 return s; 2539 case 'c': 2540 PL_minus_c = TRUE; 2541 s++; 2542 return s; 2543 case 'd': 2544 forbid_setid("-d"); 2545 s++; 2546 /* The following permits -d:Mod to accepts arguments following an = 2547 in the fashion that -MSome::Mod does. */ 2548 if (*s == ':' || *s == '=') { 2549 char *start; 2550 SV *sv; 2551 sv = newSVpv("use Devel::", 0); 2552 start = ++s; 2553 /* We now allow -d:Module=Foo,Bar */ 2554 while(isALNUM(*s) || *s==':') ++s; 2555 if (*s != '=') 2556 sv_catpv(sv, start); 2557 else { 2558 sv_catpvn(sv, start, s-start); 2559 sv_catpv(sv, " split(/,/,q{"); 2560 sv_catpv(sv, ++s); 2561 sv_catpv(sv, "})"); 2562 } 2563 s += strlen(s); 2564 my_setenv("PERL5DB", SvPV(sv, PL_na)); 2565 } 2566 if (!PL_perldb) { 2567 PL_perldb = PERLDB_ALL; 2568 init_debugger(); 2569 } 2570 return s; 2571 case 'D': 2572 { 2573 #ifdef DEBUGGING 2574 forbid_setid("-D"); 2575 s++; 2576 PL_debug = get_debug_opts(&s) | DEBUG_TOP_FLAG; 2577 #else /* !DEBUGGING */ 2578 if (ckWARN_d(WARN_DEBUGGING)) 2579 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING), 2580 "Recompile perl with -DDEBUGGING to use -D switch\n"); 2581 for (s++; isALNUM(*s); s++) ; 2582 #endif 2583 /*SUPPRESS 530*/ 2584 return s; 2585 } 2586 case 'h': 2587 usage(PL_origargv[0]); 2588 my_exit(0); 2589 case 'i': 2590 if (PL_inplace) 2591 Safefree(PL_inplace); 2592 #if defined(__CYGWIN__) /* do backup extension automagically */ 2593 if (*(s+1) == '\0') { 2594 PL_inplace = savepv(".bak"); 2595 return s+1; 2596 } 2597 #endif /* __CYGWIN__ */ 2598 PL_inplace = savepv(s+1); 2599 /*SUPPRESS 530*/ 2600 for (s = PL_inplace; *s && !isSPACE(*s); s++) ; 2601 if (*s) { 2602 *s++ = '\0'; 2603 if (*s == '-') /* Additional switches on #! line. */ 2604 s++; 2605 } 2606 return s; 2607 case 'I': /* -I handled both here and in parse_body() */ 2608 forbid_setid("-I"); 2609 ++s; 2610 while (*s && isSPACE(*s)) 2611 ++s; 2612 if (*s) { 2613 char *e, *p; 2614 p = s; 2615 /* ignore trailing spaces (possibly followed by other switches) */ 2616 do { 2617 for (e = p; *e && !isSPACE(*e); e++) ; 2618 p = e; 2619 while (isSPACE(*p)) 2620 p++; 2621 } while (*p && *p != '-'); 2622 e = savepvn(s, e-s); 2623 incpush(e, TRUE, TRUE, FALSE); 2624 Safefree(e); 2625 s = p; 2626 if (*s == '-') 2627 s++; 2628 } 2629 else 2630 Perl_croak(aTHX_ "No directory specified for -I"); 2631 return s; 2632 case 'l': 2633 PL_minus_l = TRUE; 2634 s++; 2635 if (PL_ors_sv) { 2636 SvREFCNT_dec(PL_ors_sv); 2637 PL_ors_sv = Nullsv; 2638 } 2639 if (isDIGIT(*s)) { 2640 I32 flags = 0; 2641 PL_ors_sv = newSVpvn("\n",1); 2642 numlen = 3 + (*s == '0'); 2643 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL); 2644 s += numlen; 2645 } 2646 else { 2647 if (RsPARA(PL_rs)) { 2648 PL_ors_sv = newSVpvn("\n\n",2); 2649 } 2650 else { 2651 PL_ors_sv = newSVsv(PL_rs); 2652 } 2653 } 2654 return s; 2655 case 'M': 2656 forbid_setid("-M"); /* XXX ? */ 2657 /* FALL THROUGH */ 2658 case 'm': 2659 forbid_setid("-m"); /* XXX ? */ 2660 if (*++s) { 2661 char *start; 2662 SV *sv; 2663 char *use = "use "; 2664 /* -M-foo == 'no foo' */ 2665 if (*s == '-') { use = "no "; ++s; } 2666 sv = newSVpv(use,0); 2667 start = s; 2668 /* We allow -M'Module qw(Foo Bar)' */ 2669 while(isALNUM(*s) || *s==':') ++s; 2670 if (*s != '=') { 2671 sv_catpv(sv, start); 2672 if (*(start-1) == 'm') { 2673 if (*s != '\0') 2674 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s); 2675 sv_catpv( sv, " ()"); 2676 } 2677 } else { 2678 if (s == start) 2679 Perl_croak(aTHX_ "Module name required with -%c option", 2680 s[-1]); 2681 sv_catpvn(sv, start, s-start); 2682 sv_catpv(sv, " split(/,/,q"); 2683 sv_catpvn(sv, "\0)", 1); /* Use NUL as q//-delimiter. */ 2684 sv_catpv(sv, ++s); 2685 sv_catpvn(sv, "\0)", 2); 2686 } 2687 s += strlen(s); 2688 if (!PL_preambleav) 2689 PL_preambleav = newAV(); 2690 av_push(PL_preambleav, sv); 2691 } 2692 else 2693 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1)); 2694 return s; 2695 case 'n': 2696 PL_minus_n = TRUE; 2697 s++; 2698 return s; 2699 case 'p': 2700 PL_minus_p = TRUE; 2701 s++; 2702 return s; 2703 case 's': 2704 forbid_setid("-s"); 2705 PL_doswitches = TRUE; 2706 s++; 2707 return s; 2708 case 't': 2709 if (!PL_tainting) 2710 TOO_LATE_FOR('t'); 2711 s++; 2712 return s; 2713 case 'T': 2714 if (!PL_tainting) 2715 TOO_LATE_FOR('T'); 2716 s++; 2717 return s; 2718 case 'u': 2719 #ifdef MACOS_TRADITIONAL 2720 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh"); 2721 #endif 2722 PL_do_undump = TRUE; 2723 s++; 2724 return s; 2725 case 'U': 2726 PL_unsafe = TRUE; 2727 s++; 2728 return s; 2729 case 'v': 2730 #if !defined(DGUX) 2731 PerlIO_printf(PerlIO_stdout(), 2732 Perl_form(aTHX_ "\nThis is perl, v%"VDf" built for %s", 2733 PL_patchlevel, ARCHNAME)); 2734 #else /* DGUX */ 2735 /* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */ 2736 PerlIO_printf(PerlIO_stdout(), 2737 Perl_form(aTHX_ "\nThis is perl, version %vd\n", PL_patchlevel)); 2738 PerlIO_printf(PerlIO_stdout(), 2739 Perl_form(aTHX_ " built under %s at %s %s\n", 2740 OSNAME, __DATE__, __TIME__)); 2741 PerlIO_printf(PerlIO_stdout(), 2742 Perl_form(aTHX_ " OS Specific Release: %s\n", 2743 OSVERS)); 2744 #endif /* !DGUX */ 2745 2746 #if defined(LOCAL_PATCH_COUNT) 2747 if (LOCAL_PATCH_COUNT > 0) 2748 PerlIO_printf(PerlIO_stdout(), 2749 "\n(with %d registered patch%s, " 2750 "see perl -V for more detail)", 2751 (int)LOCAL_PATCH_COUNT, 2752 (LOCAL_PATCH_COUNT!=1) ? "es" : ""); 2753 #endif 2754 2755 PerlIO_printf(PerlIO_stdout(), 2756 "\n\nCopyright 1987-2003, Larry Wall\n"); 2757 #ifdef MACOS_TRADITIONAL 2758 PerlIO_printf(PerlIO_stdout(), 2759 "\nMac OS port Copyright 1991-2002, Matthias Neeracher;\n" 2760 "maintained by Chris Nandor\n"); 2761 #endif 2762 #ifdef MSDOS 2763 PerlIO_printf(PerlIO_stdout(), 2764 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n"); 2765 #endif 2766 #ifdef DJGPP 2767 PerlIO_printf(PerlIO_stdout(), 2768 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n" 2769 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n"); 2770 #endif 2771 #ifdef OS2 2772 PerlIO_printf(PerlIO_stdout(), 2773 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n" 2774 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n"); 2775 #endif 2776 #ifdef atarist 2777 PerlIO_printf(PerlIO_stdout(), 2778 "atariST series port, ++jrb bammi@cadence.com\n"); 2779 #endif 2780 #ifdef __BEOS__ 2781 PerlIO_printf(PerlIO_stdout(), 2782 "BeOS port Copyright Tom Spindler, 1997-1999\n"); 2783 #endif 2784 #ifdef MPE 2785 PerlIO_printf(PerlIO_stdout(), 2786 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n"); 2787 #endif 2788 #ifdef OEMVS 2789 PerlIO_printf(PerlIO_stdout(), 2790 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n"); 2791 #endif 2792 #ifdef __VOS__ 2793 PerlIO_printf(PerlIO_stdout(), 2794 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n"); 2795 #endif 2796 #ifdef __OPEN_VM 2797 PerlIO_printf(PerlIO_stdout(), 2798 "VM/ESA port by Neale Ferguson, 1998-1999\n"); 2799 #endif 2800 #ifdef POSIX_BC 2801 PerlIO_printf(PerlIO_stdout(), 2802 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n"); 2803 #endif 2804 #ifdef __MINT__ 2805 PerlIO_printf(PerlIO_stdout(), 2806 "MiNT port by Guido Flohr, 1997-1999\n"); 2807 #endif 2808 #ifdef EPOC 2809 PerlIO_printf(PerlIO_stdout(), 2810 "EPOC port by Olaf Flebbe, 1999-2002\n"); 2811 #endif 2812 #ifdef UNDER_CE 2813 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n"); 2814 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n"); 2815 wce_hitreturn(); 2816 #endif 2817 #ifdef BINARY_BUILD_NOTICE 2818 BINARY_BUILD_NOTICE; 2819 #endif 2820 PerlIO_printf(PerlIO_stdout(), 2821 "\n\ 2822 Perl may be copied only under the terms of either the Artistic License or the\n\ 2823 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\ 2824 Complete documentation for Perl, including FAQ lists, should be found on\n\ 2825 this system using `man perl' or `perldoc perl'. If you have access to the\n\ 2826 Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n"); 2827 my_exit(0); 2828 case 'w': 2829 if (! (PL_dowarn & G_WARN_ALL_MASK)) 2830 PL_dowarn |= G_WARN_ON; 2831 s++; 2832 return s; 2833 case 'W': 2834 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON; 2835 if (!specialWARN(PL_compiling.cop_warnings)) 2836 SvREFCNT_dec(PL_compiling.cop_warnings); 2837 PL_compiling.cop_warnings = pWARN_ALL ; 2838 s++; 2839 return s; 2840 case 'X': 2841 PL_dowarn = G_WARN_ALL_OFF; 2842 if (!specialWARN(PL_compiling.cop_warnings)) 2843 SvREFCNT_dec(PL_compiling.cop_warnings); 2844 PL_compiling.cop_warnings = pWARN_NONE ; 2845 s++; 2846 return s; 2847 case '*': 2848 case ' ': 2849 if (s[1] == '-') /* Additional switches on #! line. */ 2850 return s+2; 2851 break; 2852 case '-': 2853 case 0: 2854 #if defined(WIN32) || !defined(PERL_STRICT_CR) 2855 case '\r': 2856 #endif 2857 case '\n': 2858 case '\t': 2859 break; 2860 #ifdef ALTERNATE_SHEBANG 2861 case 'S': /* OS/2 needs -S on "extproc" line. */ 2862 break; 2863 #endif 2864 case 'P': 2865 if (PL_preprocess) 2866 return s+1; 2867 /* FALL THROUGH */ 2868 default: 2869 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s); 2870 } 2871 return Nullch; 2872 } 2873 2874 /* compliments of Tom Christiansen */ 2875 2876 /* unexec() can be found in the Gnu emacs distribution */ 2877 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */ 2878 2879 void 2880 Perl_my_unexec(pTHX) 2881 { 2882 #ifdef UNEXEC 2883 SV* prog; 2884 SV* file; 2885 int status = 1; 2886 extern int etext; 2887 2888 prog = newSVpv(BIN_EXP, 0); 2889 sv_catpv(prog, "/perl"); 2890 file = newSVpv(PL_origfilename, 0); 2891 sv_catpv(file, ".perldump"); 2892 2893 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0); 2894 /* unexec prints msg to stderr in case of failure */ 2895 PerlProc_exit(status); 2896 #else 2897 # ifdef VMS 2898 # include <lib$routines.h> 2899 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */ 2900 # else 2901 ABORT(); /* for use with undump */ 2902 # endif 2903 #endif 2904 } 2905 2906 /* initialize curinterp */ 2907 STATIC void 2908 S_init_interp(pTHX) 2909 { 2910 2911 #ifdef MULTIPLICITY 2912 # define PERLVAR(var,type) 2913 # define PERLVARA(var,n,type) 2914 # if defined(PERL_IMPLICIT_CONTEXT) 2915 # if defined(USE_5005THREADS) 2916 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init; 2917 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init; 2918 # else /* !USE_5005THREADS */ 2919 # define PERLVARI(var,type,init) aTHX->var = init; 2920 # define PERLVARIC(var,type,init) aTHX->var = init; 2921 # endif /* USE_5005THREADS */ 2922 # else 2923 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init; 2924 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init; 2925 # endif 2926 # include "intrpvar.h" 2927 # ifndef USE_5005THREADS 2928 # include "thrdvar.h" 2929 # endif 2930 # undef PERLVAR 2931 # undef PERLVARA 2932 # undef PERLVARI 2933 # undef PERLVARIC 2934 #else 2935 # define PERLVAR(var,type) 2936 # define PERLVARA(var,n,type) 2937 # define PERLVARI(var,type,init) PL_##var = init; 2938 # define PERLVARIC(var,type,init) PL_##var = init; 2939 # include "intrpvar.h" 2940 # ifndef USE_5005THREADS 2941 # include "thrdvar.h" 2942 # endif 2943 # undef PERLVAR 2944 # undef PERLVARA 2945 # undef PERLVARI 2946 # undef PERLVARIC 2947 #endif 2948 2949 } 2950 2951 STATIC void 2952 S_init_main_stash(pTHX) 2953 { 2954 GV *gv; 2955 2956 PL_curstash = PL_defstash = newHV(); 2957 PL_curstname = newSVpvn("main",4); 2958 gv = gv_fetchpv("main::",TRUE, SVt_PVHV); 2959 SvREFCNT_dec(GvHV(gv)); 2960 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash); 2961 SvREADONLY_on(gv); 2962 HvNAME(PL_defstash) = savepv("main"); 2963 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV))); 2964 GvMULTI_on(PL_incgv); 2965 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */ 2966 GvMULTI_on(PL_hintgv); 2967 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV); 2968 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV)); 2969 GvMULTI_on(PL_errgv); 2970 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */ 2971 GvMULTI_on(PL_replgv); 2972 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */ 2973 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */ 2974 sv_setpvn(ERRSV, "", 0); 2975 PL_curstash = PL_defstash; 2976 CopSTASH_set(&PL_compiling, PL_defstash); 2977 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV)); 2978 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV)); 2979 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV)); 2980 /* We must init $/ before switches are processed. */ 2981 sv_setpvn(get_sv("/", TRUE), "\n", 1); 2982 } 2983 2984 STATIC void 2985 S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript) 2986 { 2987 char *quote; 2988 char *code; 2989 char *cpp_discard_flag; 2990 char *perl; 2991 2992 *fdscript = -1; 2993 2994 if (PL_e_script) { 2995 PL_origfilename = savepv("-e"); 2996 } 2997 else { 2998 /* if find_script() returns, it returns a malloc()-ed value */ 2999 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1); 3000 3001 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) { 3002 char *s = scriptname + 8; 3003 *fdscript = atoi(s); 3004 while (isDIGIT(*s)) 3005 s++; 3006 if (*s) { 3007 scriptname = savepv(s + 1); 3008 Safefree(PL_origfilename); 3009 PL_origfilename = scriptname; 3010 } 3011 } 3012 } 3013 3014 CopFILE_free(PL_curcop); 3015 CopFILE_set(PL_curcop, PL_origfilename); 3016 if (strEQ(PL_origfilename,"-")) 3017 scriptname = ""; 3018 if (*fdscript >= 0) { 3019 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE); 3020 # if defined(HAS_FCNTL) && defined(F_SETFD) 3021 if (PL_rsfp) 3022 /* ensure close-on-exec */ 3023 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); 3024 # endif 3025 } 3026 else if (PL_preprocess) { 3027 char *cpp_cfg = CPPSTDIN; 3028 SV *cpp = newSVpvn("",0); 3029 SV *cmd = NEWSV(0,0); 3030 3031 if (cpp_cfg[0] == 0) /* PERL_MICRO? */ 3032 Perl_croak(aTHX_ "Can't run with cpp -P with CPPSTDIN undefined"); 3033 if (strEQ(cpp_cfg, "cppstdin")) 3034 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP); 3035 sv_catpv(cpp, cpp_cfg); 3036 3037 # ifndef VMS 3038 sv_catpvn(sv, "-I", 2); 3039 sv_catpv(sv,PRIVLIB_EXP); 3040 # endif 3041 3042 DEBUG_P(PerlIO_printf(Perl_debug_log, 3043 "PL_preprocess: scriptname=\"%s\", cpp=\"%s\", sv=\"%s\", CPPMINUS=\"%s\"\n", 3044 scriptname, SvPVX (cpp), SvPVX (sv), CPPMINUS)); 3045 3046 # if defined(MSDOS) || defined(WIN32) || defined(VMS) 3047 quote = "\""; 3048 # else 3049 quote = "'"; 3050 # endif 3051 3052 # ifdef VMS 3053 cpp_discard_flag = ""; 3054 # else 3055 cpp_discard_flag = "-C"; 3056 # endif 3057 3058 # ifdef OS2 3059 perl = os2_execname(aTHX); 3060 # else 3061 perl = PL_origargv[0]; 3062 # endif 3063 3064 3065 /* This strips off Perl comments which might interfere with 3066 the C pre-processor, including #!. #line directives are 3067 deliberately stripped to avoid confusion with Perl's version 3068 of #line. FWP played some golf with it so it will fit 3069 into VMS's 255 character buffer. 3070 */ 3071 if( PL_doextract ) 3072 code = "(1../^#!.*perl/i)|/^\\s*#(?!\\s*((ifn?|un)def|(el|end)?if|define|include|else|error|pragma)\\b)/||!($|=1)||print"; 3073 else 3074 code = "/^\\s*#(?!\\s*((ifn?|un)def|(el|end)?if|define|include|else|error|pragma)\\b)/||!($|=1)||print"; 3075 3076 Perl_sv_setpvf(aTHX_ cmd, "\ 3077 %s -ne%s%s%s %s | %"SVf" %s %"SVf" %s", 3078 perl, quote, code, quote, scriptname, cpp, 3079 cpp_discard_flag, sv, CPPMINUS); 3080 3081 PL_doextract = FALSE; 3082 # ifdef IAMSUID /* actually, this is caught earlier */ 3083 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */ 3084 # ifdef HAS_SETEUID 3085 (void)seteuid(PL_uid); /* musn't stay setuid root */ 3086 # else 3087 # ifdef HAS_SETREUID 3088 (void)setreuid((Uid_t)-1, PL_uid); 3089 # else 3090 # ifdef HAS_SETRESUID 3091 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1); 3092 # else 3093 PerlProc_setuid(PL_uid); 3094 # endif 3095 # endif 3096 # endif 3097 if (PerlProc_geteuid() != PL_uid) 3098 Perl_croak(aTHX_ "Can't do seteuid!\n"); 3099 } 3100 # endif /* IAMSUID */ 3101 3102 DEBUG_P(PerlIO_printf(Perl_debug_log, 3103 "PL_preprocess: cmd=\"%s\"\n", 3104 SvPVX(cmd))); 3105 3106 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r"); 3107 SvREFCNT_dec(cmd); 3108 SvREFCNT_dec(cpp); 3109 } 3110 else if (!*scriptname) { 3111 forbid_setid("program input from stdin"); 3112 PL_rsfp = PerlIO_stdin(); 3113 } 3114 else { 3115 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE); 3116 # if defined(HAS_FCNTL) && defined(F_SETFD) 3117 if (PL_rsfp) 3118 /* ensure close-on-exec */ 3119 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); 3120 # endif 3121 } 3122 if (!PL_rsfp) { 3123 # ifdef DOSUID 3124 # ifndef IAMSUID /* in case script is not readable before setuid */ 3125 if (PL_euid && 3126 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 && 3127 PL_statbuf.st_mode & (S_ISUID|S_ISGID)) 3128 { 3129 /* try again */ 3130 PERL_FPU_PRE_EXEC 3131 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, 3132 BIN_EXP, (int)PERL_REVISION, 3133 (int)PERL_VERSION, 3134 (int)PERL_SUBVERSION), PL_origargv); 3135 PERL_FPU_POST_EXEC 3136 Perl_croak(aTHX_ "Can't do setuid\n"); 3137 } 3138 # endif 3139 # endif 3140 # ifdef IAMSUID 3141 errno = EPERM; 3142 Perl_croak(aTHX_ "Permission denied\n"); 3143 # else 3144 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n", 3145 CopFILE(PL_curcop), Strerror(errno)); 3146 # endif 3147 } 3148 } 3149 3150 /* Mention 3151 * I_SYSSTATVFS HAS_FSTATVFS 3152 * I_SYSMOUNT 3153 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT 3154 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT 3155 * here so that metaconfig picks them up. */ 3156 3157 #ifdef IAMSUID 3158 STATIC int 3159 S_fd_on_nosuid_fs(pTHX_ int fd) 3160 { 3161 int check_okay = 0; /* able to do all the required sys/libcalls */ 3162 int on_nosuid = 0; /* the fd is on a nosuid fs */ 3163 /* 3164 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent(). 3165 * fstatvfs() is UNIX98. 3166 * fstatfs() is 4.3 BSD. 3167 * ustat()+getmnt() is pre-4.3 BSD. 3168 * getmntent() is O(number-of-mounted-filesystems) and can hang on 3169 * an irrelevant filesystem while trying to reach the right one. 3170 */ 3171 3172 #undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */ 3173 3174 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \ 3175 defined(HAS_FSTATVFS) 3176 # define FD_ON_NOSUID_CHECK_OKAY 3177 struct statvfs stfs; 3178 3179 check_okay = fstatvfs(fd, &stfs) == 0; 3180 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID); 3181 # endif /* fstatvfs */ 3182 3183 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \ 3184 defined(PERL_MOUNT_NOSUID) && \ 3185 defined(HAS_FSTATFS) && \ 3186 defined(HAS_STRUCT_STATFS) && \ 3187 defined(HAS_STRUCT_STATFS_F_FLAGS) 3188 # define FD_ON_NOSUID_CHECK_OKAY 3189 struct statfs stfs; 3190 3191 check_okay = fstatfs(fd, &stfs) == 0; 3192 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID); 3193 # endif /* fstatfs */ 3194 3195 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \ 3196 defined(PERL_MOUNT_NOSUID) && \ 3197 defined(HAS_FSTAT) && \ 3198 defined(HAS_USTAT) && \ 3199 defined(HAS_GETMNT) && \ 3200 defined(HAS_STRUCT_FS_DATA) && \ 3201 defined(NOSTAT_ONE) 3202 # define FD_ON_NOSUID_CHECK_OKAY 3203 Stat_t fdst; 3204 3205 if (fstat(fd, &fdst) == 0) { 3206 struct ustat us; 3207 if (ustat(fdst.st_dev, &us) == 0) { 3208 struct fs_data fsd; 3209 /* NOSTAT_ONE here because we're not examining fields which 3210 * vary between that case and STAT_ONE. */ 3211 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) { 3212 size_t cmplen = sizeof(us.f_fname); 3213 if (sizeof(fsd.fd_req.path) < cmplen) 3214 cmplen = sizeof(fsd.fd_req.path); 3215 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) && 3216 fdst.st_dev == fsd.fd_req.dev) { 3217 check_okay = 1; 3218 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID; 3219 } 3220 } 3221 } 3222 } 3223 } 3224 # endif /* fstat+ustat+getmnt */ 3225 3226 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \ 3227 defined(HAS_GETMNTENT) && \ 3228 defined(HAS_HASMNTOPT) && \ 3229 defined(MNTOPT_NOSUID) 3230 # define FD_ON_NOSUID_CHECK_OKAY 3231 FILE *mtab = fopen("/etc/mtab", "r"); 3232 struct mntent *entry; 3233 Stat_t stb, fsb; 3234 3235 if (mtab && (fstat(fd, &stb) == 0)) { 3236 while (entry = getmntent(mtab)) { 3237 if (stat(entry->mnt_dir, &fsb) == 0 3238 && fsb.st_dev == stb.st_dev) 3239 { 3240 /* found the filesystem */ 3241 check_okay = 1; 3242 if (hasmntopt(entry, MNTOPT_NOSUID)) 3243 on_nosuid = 1; 3244 break; 3245 } /* A single fs may well fail its stat(). */ 3246 } 3247 } 3248 if (mtab) 3249 fclose(mtab); 3250 # endif /* getmntent+hasmntopt */ 3251 3252 if (!check_okay) 3253 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename); 3254 return on_nosuid; 3255 } 3256 #endif /* IAMSUID */ 3257 3258 STATIC void 3259 S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript) 3260 { 3261 #ifdef IAMSUID 3262 int which; 3263 #endif 3264 3265 /* do we need to emulate setuid on scripts? */ 3266 3267 /* This code is for those BSD systems that have setuid #! scripts disabled 3268 * in the kernel because of a security problem. Merely defining DOSUID 3269 * in perl will not fix that problem, but if you have disabled setuid 3270 * scripts in the kernel, this will attempt to emulate setuid and setgid 3271 * on scripts that have those now-otherwise-useless bits set. The setuid 3272 * root version must be called suidperl or sperlN.NNN. If regular perl 3273 * discovers that it has opened a setuid script, it calls suidperl with 3274 * the same argv that it had. If suidperl finds that the script it has 3275 * just opened is NOT setuid root, it sets the effective uid back to the 3276 * uid. We don't just make perl setuid root because that loses the 3277 * effective uid we had before invoking perl, if it was different from the 3278 * uid. 3279 * 3280 * DOSUID must be defined in both perl and suidperl, and IAMSUID must 3281 * be defined in suidperl only. suidperl must be setuid root. The 3282 * Configure script will set this up for you if you want it. 3283 */ 3284 3285 #ifdef DOSUID 3286 char *s, *s2; 3287 3288 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */ 3289 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename); 3290 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) { 3291 I32 len; 3292 STRLEN n_a; 3293 3294 #ifdef IAMSUID 3295 #ifndef HAS_SETREUID 3296 /* On this access check to make sure the directories are readable, 3297 * there is actually a small window that the user could use to make 3298 * filename point to an accessible directory. So there is a faint 3299 * chance that someone could execute a setuid script down in a 3300 * non-accessible directory. I don't know what to do about that. 3301 * But I don't think it's too important. The manual lies when 3302 * it says access() is useful in setuid programs. 3303 */ 3304 if (PerlLIO_access(CopFILE(PL_curcop),1)) { /*double check*/ 3305 errno = EPERM; 3306 Perl_croak(aTHX_ "Permission denied\n"); 3307 } 3308 #else 3309 /* If we can swap euid and uid, then we can determine access rights 3310 * with a simple stat of the file, and then compare device and 3311 * inode to make sure we did stat() on the same file we opened. 3312 * Then we just have to make sure he or she can execute it. 3313 */ 3314 { 3315 Stat_t tmpstatbuf; 3316 3317 if ( 3318 #ifdef HAS_SETREUID 3319 setreuid(PL_euid,PL_uid) < 0 3320 #else 3321 # if HAS_SETRESUID 3322 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0 3323 # endif 3324 #endif 3325 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid) 3326 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */ 3327 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0) { 3328 errno = EPERM; 3329 Perl_croak(aTHX_ "Permission denied\n"); /* testing full pathname here */ 3330 } 3331 #if defined(IAMSUID) && !defined(NO_NOSUID_CHECK) 3332 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp))) { 3333 errno = EPERM; 3334 Perl_croak(aTHX_ "Permission denied\n"); 3335 } 3336 #endif 3337 if (tmpstatbuf.st_dev != PL_statbuf.st_dev || 3338 tmpstatbuf.st_ino != PL_statbuf.st_ino) { 3339 (void)PerlIO_close(PL_rsfp); 3340 errno = EPERM; 3341 Perl_croak(aTHX_ "Permission denied\n"); 3342 } 3343 if ( 3344 #ifdef HAS_SETREUID 3345 setreuid(PL_uid,PL_euid) < 0 3346 #else 3347 # if defined(HAS_SETRESUID) 3348 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0 3349 # endif 3350 #endif 3351 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid) 3352 Perl_croak(aTHX_ "Can't reswap uid and euid"); 3353 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */ 3354 Perl_croak(aTHX_ "Permission denied\n"); 3355 } 3356 #endif /* HAS_SETREUID */ 3357 #endif /* IAMSUID */ 3358 3359 if (!S_ISREG(PL_statbuf.st_mode)) { 3360 errno = EPERM; 3361 Perl_croak(aTHX_ "Permission denied\n"); 3362 } 3363 if (PL_statbuf.st_mode & S_IWOTH) 3364 Perl_croak(aTHX_ "Setuid/gid script is writable by world"); 3365 PL_doswitches = FALSE; /* -s is insecure in suid */ 3366 CopLINE_inc(PL_curcop); 3367 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch || 3368 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */ 3369 Perl_croak(aTHX_ "No #! line"); 3370 s = SvPV(PL_linestr,n_a)+2; 3371 if (*s == ' ') s++; 3372 while (!isSPACE(*s)) s++; 3373 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 && 3374 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ; 3375 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */ 3376 Perl_croak(aTHX_ "Not a perl script"); 3377 while (*s == ' ' || *s == '\t') s++; 3378 /* 3379 * #! arg must be what we saw above. They can invoke it by 3380 * mentioning suidperl explicitly, but they may not add any strange 3381 * arguments beyond what #! says if they do invoke suidperl that way. 3382 */ 3383 len = strlen(validarg); 3384 if (strEQ(validarg," PHOOEY ") || 3385 strnNE(s,validarg,len) || !isSPACE(s[len])) 3386 Perl_croak(aTHX_ "Args must match #! line"); 3387 3388 #ifndef IAMSUID 3389 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) && 3390 PL_euid == PL_statbuf.st_uid) 3391 if (!PL_do_undump) 3392 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\ 3393 FIX YOUR KERNEL, OR PUT A C WRAPPER AROUND THIS SCRIPT!\n"); 3394 #endif /* IAMSUID */ 3395 3396 if (PL_euid) { /* oops, we're not the setuid root perl */ 3397 (void)PerlIO_close(PL_rsfp); 3398 #ifndef IAMSUID 3399 /* try again */ 3400 PERL_FPU_PRE_EXEC 3401 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP, 3402 (int)PERL_REVISION, (int)PERL_VERSION, 3403 (int)PERL_SUBVERSION), PL_origargv); 3404 PERL_FPU_POST_EXEC 3405 #endif 3406 Perl_croak(aTHX_ "Can't do setuid\n"); 3407 } 3408 3409 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) { 3410 #ifdef HAS_SETEGID 3411 (void)setegid(PL_statbuf.st_gid); 3412 #else 3413 #ifdef HAS_SETREGID 3414 (void)setregid((Gid_t)-1,PL_statbuf.st_gid); 3415 #else 3416 #ifdef HAS_SETRESGID 3417 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1); 3418 #else 3419 PerlProc_setgid(PL_statbuf.st_gid); 3420 #endif 3421 #endif 3422 #endif 3423 if (PerlProc_getegid() != PL_statbuf.st_gid) 3424 Perl_croak(aTHX_ "Can't do setegid!\n"); 3425 } 3426 if (PL_statbuf.st_mode & S_ISUID) { 3427 if (PL_statbuf.st_uid != PL_euid) 3428 #ifdef HAS_SETEUID 3429 (void)seteuid(PL_statbuf.st_uid); /* all that for this */ 3430 #else 3431 #ifdef HAS_SETREUID 3432 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid); 3433 #else 3434 #ifdef HAS_SETRESUID 3435 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1); 3436 #else 3437 PerlProc_setuid(PL_statbuf.st_uid); 3438 #endif 3439 #endif 3440 #endif 3441 if (PerlProc_geteuid() != PL_statbuf.st_uid) 3442 Perl_croak(aTHX_ "Can't do seteuid!\n"); 3443 } 3444 else if (PL_uid) { /* oops, mustn't run as root */ 3445 #ifdef HAS_SETEUID 3446 (void)seteuid((Uid_t)PL_uid); 3447 #else 3448 #ifdef HAS_SETREUID 3449 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid); 3450 #else 3451 #ifdef HAS_SETRESUID 3452 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1); 3453 #else 3454 PerlProc_setuid((Uid_t)PL_uid); 3455 #endif 3456 #endif 3457 #endif 3458 if (PerlProc_geteuid() != PL_uid) 3459 Perl_croak(aTHX_ "Can't do seteuid!\n"); 3460 } 3461 init_ids(); 3462 if (!cando(S_IXUSR,TRUE,&PL_statbuf)) 3463 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */ 3464 } 3465 #ifdef IAMSUID 3466 else if (PL_preprocess) 3467 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n"); 3468 else if (fdscript >= 0) 3469 Perl_croak(aTHX_ "fd script not allowed in suidperl\n"); 3470 else { 3471 errno = EPERM; 3472 Perl_croak(aTHX_ "Permission denied\n"); 3473 } 3474 3475 /* We absolutely must clear out any saved ids here, so we */ 3476 /* exec the real perl, substituting fd script for scriptname. */ 3477 /* (We pass script name as "subdir" of fd, which perl will grok.) */ 3478 PerlIO_rewind(PL_rsfp); 3479 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */ 3480 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ; 3481 if (!PL_origargv[which]) { 3482 errno = EPERM; 3483 Perl_croak(aTHX_ "Permission denied\n"); 3484 } 3485 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s", 3486 PerlIO_fileno(PL_rsfp), PL_origargv[which])); 3487 #if defined(HAS_FCNTL) && defined(F_SETFD) 3488 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */ 3489 #endif 3490 PERL_FPU_PRE_EXEC 3491 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP, 3492 (int)PERL_REVISION, (int)PERL_VERSION, 3493 (int)PERL_SUBVERSION), PL_origargv);/* try again */ 3494 PERL_FPU_POST_EXEC 3495 Perl_croak(aTHX_ "Can't do setuid\n"); 3496 #endif /* IAMSUID */ 3497 #else /* !DOSUID */ 3498 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */ 3499 #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW 3500 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */ 3501 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID) 3502 || 3503 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID) 3504 ) 3505 if (!PL_do_undump) 3506 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\ 3507 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n"); 3508 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */ 3509 /* not set-id, must be wrapped */ 3510 } 3511 #endif /* DOSUID */ 3512 } 3513 3514 STATIC void 3515 S_find_beginning(pTHX) 3516 { 3517 register char *s, *s2; 3518 #ifdef MACOS_TRADITIONAL 3519 int maclines = 0; 3520 #endif 3521 3522 /* skip forward in input to the real script? */ 3523 3524 forbid_setid("-x"); 3525 #ifdef MACOS_TRADITIONAL 3526 /* Since the Mac OS does not honor #! arguments for us, we do it ourselves */ 3527 3528 while (PL_doextract || gMacPerl_AlwaysExtract) { 3529 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) { 3530 if (!gMacPerl_AlwaysExtract) 3531 Perl_croak(aTHX_ "No Perl script found in input\n"); 3532 3533 if (PL_doextract) /* require explicit override ? */ 3534 if (!OverrideExtract(PL_origfilename)) 3535 Perl_croak(aTHX_ "User aborted script\n"); 3536 else 3537 PL_doextract = FALSE; 3538 3539 /* Pater peccavi, file does not have #! */ 3540 PerlIO_rewind(PL_rsfp); 3541 3542 break; 3543 } 3544 #else 3545 while (PL_doextract) { 3546 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) 3547 Perl_croak(aTHX_ "No Perl script found in input\n"); 3548 #endif 3549 s2 = s; 3550 if (*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))) { 3551 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */ 3552 PL_doextract = FALSE; 3553 while (*s && !(isSPACE (*s) || *s == '#')) s++; 3554 s2 = s; 3555 while (*s == ' ' || *s == '\t') s++; 3556 if (*s++ == '-') { 3557 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--; 3558 if (strnEQ(s2-4,"perl",4)) 3559 /*SUPPRESS 530*/ 3560 while ((s = moreswitches(s))) 3561 ; 3562 } 3563 #ifdef MACOS_TRADITIONAL 3564 /* We are always searching for the #!perl line in MacPerl, 3565 * so if we find it, still keep the line count correct 3566 * by counting lines we already skipped over 3567 */ 3568 for (; maclines > 0 ; maclines--) 3569 PerlIO_ungetc(PL_rsfp, '\n'); 3570 3571 break; 3572 3573 /* gMacPerl_AlwaysExtract is false in MPW tool */ 3574 } else if (gMacPerl_AlwaysExtract) { 3575 ++maclines; 3576 #endif 3577 } 3578 } 3579 } 3580 3581 3582 STATIC void 3583 S_init_ids(pTHX) 3584 { 3585 PL_uid = PerlProc_getuid(); 3586 PL_euid = PerlProc_geteuid(); 3587 PL_gid = PerlProc_getgid(); 3588 PL_egid = PerlProc_getegid(); 3589 #ifdef VMS 3590 PL_uid |= PL_gid << 16; 3591 PL_euid |= PL_egid << 16; 3592 #endif 3593 /* Should not happen: */ 3594 CHECK_MALLOC_TAINT(PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); 3595 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); 3596 } 3597 3598 /* This is used very early in the lifetime of the program, 3599 * before even the options are parsed, so PL_tainting has 3600 * not been initialized properly. */ 3601 bool 3602 Perl_doing_taint(int argc, char *argv[], char *envp[]) 3603 { 3604 #ifndef PERL_IMPLICIT_SYS 3605 /* If we have PERL_IMPLICIT_SYS we can't call getuid() et alia 3606 * before we have an interpreter-- and the whole point of this 3607 * function is to be called at such an early stage. If you are on 3608 * a system with PERL_IMPLICIT_SYS but you do have a concept of 3609 * "tainted because running with altered effective ids', you'll 3610 * have to add your own checks somewhere in here. The two most 3611 * known samples of 'implicitness' are Win32 and NetWare, neither 3612 * of which has much of concept of 'uids'. */ 3613 int uid = PerlProc_getuid(); 3614 int euid = PerlProc_geteuid(); 3615 int gid = PerlProc_getgid(); 3616 int egid = PerlProc_getegid(); 3617 3618 #ifdef VMS 3619 uid |= gid << 16; 3620 euid |= egid << 16; 3621 #endif 3622 if (uid && (euid != uid || egid != gid)) 3623 return 1; 3624 #endif /* !PERL_IMPLICIT_SYS */ 3625 /* This is a really primitive check; environment gets ignored only 3626 * if -T are the first chars together; otherwise one gets 3627 * "Too late" message. */ 3628 if ( argc > 1 && argv[1][0] == '-' 3629 && (argv[1][1] == 't' || argv[1][1] == 'T') ) 3630 return 1; 3631 return 0; 3632 } 3633 3634 STATIC void 3635 S_forbid_setid(pTHX_ char *s) 3636 { 3637 if (PL_euid != PL_uid) 3638 Perl_croak(aTHX_ "No %s allowed while running setuid", s); 3639 if (PL_egid != PL_gid) 3640 Perl_croak(aTHX_ "No %s allowed while running setgid", s); 3641 } 3642 3643 void 3644 Perl_init_debugger(pTHX) 3645 { 3646 HV *ostash = PL_curstash; 3647 3648 PL_curstash = PL_debstash; 3649 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("DB::args", GV_ADDMULTI, SVt_PVAV)))); 3650 AvREAL_off(PL_dbargs); 3651 PL_DBgv = gv_fetchpv("DB::DB", GV_ADDMULTI, SVt_PVGV); 3652 PL_DBline = gv_fetchpv("DB::dbline", GV_ADDMULTI, SVt_PVAV); 3653 PL_DBsub = gv_HVadd(gv_fetchpv("DB::sub", GV_ADDMULTI, SVt_PVHV)); 3654 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */ 3655 PL_DBsingle = GvSV((gv_fetchpv("DB::single", GV_ADDMULTI, SVt_PV))); 3656 sv_setiv(PL_DBsingle, 0); 3657 PL_DBtrace = GvSV((gv_fetchpv("DB::trace", GV_ADDMULTI, SVt_PV))); 3658 sv_setiv(PL_DBtrace, 0); 3659 PL_DBsignal = GvSV((gv_fetchpv("DB::signal", GV_ADDMULTI, SVt_PV))); 3660 sv_setiv(PL_DBsignal, 0); 3661 PL_curstash = ostash; 3662 } 3663 3664 #ifndef STRESS_REALLOC 3665 #define REASONABLE(size) (size) 3666 #else 3667 #define REASONABLE(size) (1) /* unreasonable */ 3668 #endif 3669 3670 void 3671 Perl_init_stacks(pTHX) 3672 { 3673 /* start with 128-item stack and 8K cxstack */ 3674 PL_curstackinfo = new_stackinfo(REASONABLE(128), 3675 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1)); 3676 PL_curstackinfo->si_type = PERLSI_MAIN; 3677 PL_curstack = PL_curstackinfo->si_stack; 3678 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 3679 3680 PL_stack_base = AvARRAY(PL_curstack); 3681 PL_stack_sp = PL_stack_base; 3682 PL_stack_max = PL_stack_base + AvMAX(PL_curstack); 3683 3684 New(50,PL_tmps_stack,REASONABLE(128),SV*); 3685 PL_tmps_floor = -1; 3686 PL_tmps_ix = -1; 3687 PL_tmps_max = REASONABLE(128); 3688 3689 New(54,PL_markstack,REASONABLE(32),I32); 3690 PL_markstack_ptr = PL_markstack; 3691 PL_markstack_max = PL_markstack + REASONABLE(32); 3692 3693 SET_MARK_OFFSET; 3694 3695 New(54,PL_scopestack,REASONABLE(32),I32); 3696 PL_scopestack_ix = 0; 3697 PL_scopestack_max = REASONABLE(32); 3698 3699 New(54,PL_savestack,REASONABLE(128),ANY); 3700 PL_savestack_ix = 0; 3701 PL_savestack_max = REASONABLE(128); 3702 3703 New(54,PL_retstack,REASONABLE(16),OP*); 3704 PL_retstack_ix = 0; 3705 PL_retstack_max = REASONABLE(16); 3706 } 3707 3708 #undef REASONABLE 3709 3710 STATIC void 3711 S_nuke_stacks(pTHX) 3712 { 3713 while (PL_curstackinfo->si_next) 3714 PL_curstackinfo = PL_curstackinfo->si_next; 3715 while (PL_curstackinfo) { 3716 PERL_SI *p = PL_curstackinfo->si_prev; 3717 /* curstackinfo->si_stack got nuked by sv_free_arenas() */ 3718 Safefree(PL_curstackinfo->si_cxstack); 3719 Safefree(PL_curstackinfo); 3720 PL_curstackinfo = p; 3721 } 3722 Safefree(PL_tmps_stack); 3723 Safefree(PL_markstack); 3724 Safefree(PL_scopestack); 3725 Safefree(PL_savestack); 3726 Safefree(PL_retstack); 3727 } 3728 3729 STATIC void 3730 S_init_lexer(pTHX) 3731 { 3732 PerlIO *tmpfp; 3733 tmpfp = PL_rsfp; 3734 PL_rsfp = Nullfp; 3735 lex_start(PL_linestr); 3736 PL_rsfp = tmpfp; 3737 PL_subname = newSVpvn("main",4); 3738 } 3739 3740 STATIC void 3741 S_init_predump_symbols(pTHX) 3742 { 3743 GV *tmpgv; 3744 IO *io; 3745 3746 sv_setpvn(get_sv("\"", TRUE), " ", 1); 3747 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO); 3748 GvMULTI_on(PL_stdingv); 3749 io = GvIOp(PL_stdingv); 3750 IoTYPE(io) = IoTYPE_RDONLY; 3751 IoIFP(io) = PerlIO_stdin(); 3752 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV); 3753 GvMULTI_on(tmpgv); 3754 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io); 3755 3756 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO); 3757 GvMULTI_on(tmpgv); 3758 io = GvIOp(tmpgv); 3759 IoTYPE(io) = IoTYPE_WRONLY; 3760 IoOFP(io) = IoIFP(io) = PerlIO_stdout(); 3761 setdefout(tmpgv); 3762 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV); 3763 GvMULTI_on(tmpgv); 3764 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io); 3765 3766 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO); 3767 GvMULTI_on(PL_stderrgv); 3768 io = GvIOp(PL_stderrgv); 3769 IoTYPE(io) = IoTYPE_WRONLY; 3770 IoOFP(io) = IoIFP(io) = PerlIO_stderr(); 3771 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV); 3772 GvMULTI_on(tmpgv); 3773 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io); 3774 3775 PL_statname = NEWSV(66,0); /* last filename we did stat on */ 3776 3777 if (PL_osname) 3778 Safefree(PL_osname); 3779 PL_osname = savepv(OSNAME); 3780 } 3781 3782 void 3783 Perl_init_argv_symbols(pTHX_ register int argc, register char **argv) 3784 { 3785 char *s; 3786 argc--,argv++; /* skip name of script */ 3787 if (PL_doswitches) { 3788 for (; argc > 0 && **argv == '-'; argc--,argv++) { 3789 if (!argv[0][1]) 3790 break; 3791 if (argv[0][1] == '-' && !argv[0][2]) { 3792 argc--,argv++; 3793 break; 3794 } 3795 if ((s = strchr(argv[0], '='))) { 3796 *s++ = '\0'; 3797 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s); 3798 } 3799 else 3800 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1); 3801 } 3802 } 3803 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) { 3804 GvMULTI_on(PL_argvgv); 3805 (void)gv_AVadd(PL_argvgv); 3806 av_clear(GvAVn(PL_argvgv)); 3807 for (; argc > 0; argc--,argv++) { 3808 SV *sv = newSVpv(argv[0],0); 3809 av_push(GvAVn(PL_argvgv),sv); 3810 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) { 3811 if (PL_unicode & PERL_UNICODE_ARGV_FLAG) 3812 SvUTF8_on(sv); 3813 } 3814 if (PL_unicode & PERL_UNICODE_WIDESYSCALLS_FLAG) /* Sarathy? */ 3815 (void)sv_utf8_decode(sv); 3816 } 3817 } 3818 } 3819 3820 #ifdef HAS_PROCSELFEXE 3821 /* This is a function so that we don't hold on to MAXPATHLEN 3822 bytes of stack longer than necessary 3823 */ 3824 STATIC void 3825 S_procself_val(pTHX_ SV *sv, char *arg0) 3826 { 3827 char buf[MAXPATHLEN]; 3828 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1); 3829 3830 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe) 3831 includes a spurious NUL which will cause $^X to fail in system 3832 or backticks (this will prevent extensions from being built and 3833 many tests from working). readlink is not meant to add a NUL. 3834 Normal readlink works fine. 3835 */ 3836 if (len > 0 && buf[len-1] == '\0') { 3837 len--; 3838 } 3839 3840 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes 3841 returning the text "unknown" from the readlink rather than the path 3842 to the executable (or returning an error from the readlink). Any valid 3843 path has a '/' in it somewhere, so use that to validate the result. 3844 See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703 3845 */ 3846 if (len > 0 && memchr(buf, '/', len)) { 3847 sv_setpvn(sv,buf,len); 3848 } 3849 else { 3850 sv_setpv(sv,arg0); 3851 } 3852 } 3853 #endif /* HAS_PROCSELFEXE */ 3854 3855 STATIC void 3856 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env) 3857 { 3858 char *s; 3859 SV *sv; 3860 GV* tmpgv; 3861 3862 PL_toptarget = NEWSV(0,0); 3863 sv_upgrade(PL_toptarget, SVt_PVFM); 3864 sv_setpvn(PL_toptarget, "", 0); 3865 PL_bodytarget = NEWSV(0,0); 3866 sv_upgrade(PL_bodytarget, SVt_PVFM); 3867 sv_setpvn(PL_bodytarget, "", 0); 3868 PL_formtarget = PL_bodytarget; 3869 3870 TAINT; 3871 3872 init_argv_symbols(argc,argv); 3873 3874 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) { 3875 #ifdef MACOS_TRADITIONAL 3876 /* $0 is not majick on a Mac */ 3877 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename)); 3878 #else 3879 sv_setpv(GvSV(tmpgv),PL_origfilename); 3880 magicname("0", "0", 1); 3881 #endif 3882 } 3883 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV))) {/* $^X */ 3884 #ifdef HAS_PROCSELFEXE 3885 S_procself_val(aTHX_ GvSV(tmpgv), PL_origargv[0]); 3886 #else 3887 #ifdef OS2 3888 sv_setpv(GvSV(tmpgv), os2_execname(aTHX)); 3889 #else 3890 sv_setpv(GvSV(tmpgv),PL_origargv[0]); 3891 #endif 3892 #endif 3893 } 3894 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) { 3895 HV *hv; 3896 GvMULTI_on(PL_envgv); 3897 hv = GvHVn(PL_envgv); 3898 hv_magic(hv, Nullgv, PERL_MAGIC_env); 3899 #ifndef PERL_MICRO 3900 #ifdef USE_ENVIRON_ARRAY 3901 /* Note that if the supplied env parameter is actually a copy 3902 of the global environ then it may now point to free'd memory 3903 if the environment has been modified since. To avoid this 3904 problem we treat env==NULL as meaning 'use the default' 3905 */ 3906 if (!env) 3907 env = environ; 3908 if (env != environ 3909 # ifdef USE_ITHREADS 3910 && PL_curinterp == aTHX 3911 # endif 3912 ) 3913 { 3914 environ[0] = Nullch; 3915 } 3916 if (env) 3917 for (; *env; env++) { 3918 if (!(s = strchr(*env,'='))) 3919 continue; 3920 #if defined(MSDOS) && !defined(DJGPP) 3921 *s = '\0'; 3922 (void)strupr(*env); 3923 *s = '='; 3924 #endif 3925 sv = newSVpv(s+1, 0); 3926 (void)hv_store(hv, *env, s - *env, sv, 0); 3927 if (env != environ) 3928 mg_set(sv); 3929 } 3930 #endif /* USE_ENVIRON_ARRAY */ 3931 #endif /* !PERL_MICRO */ 3932 } 3933 TAINT_NOT; 3934 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV))) { 3935 SvREADONLY_off(GvSV(tmpgv)); 3936 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid()); 3937 SvREADONLY_on(GvSV(tmpgv)); 3938 } 3939 #ifdef THREADS_HAVE_PIDS 3940 PL_ppid = (IV)getppid(); 3941 #endif 3942 3943 /* touch @F array to prevent spurious warnings 20020415 MJD */ 3944 if (PL_minus_a) { 3945 (void) get_av("main::F", TRUE | GV_ADDMULTI); 3946 } 3947 /* touch @- and @+ arrays to prevent spurious warnings 20020415 MJD */ 3948 (void) get_av("main::-", TRUE | GV_ADDMULTI); 3949 (void) get_av("main::+", TRUE | GV_ADDMULTI); 3950 } 3951 3952 STATIC void 3953 S_init_perllib(pTHX) 3954 { 3955 char *s; 3956 if (!PL_tainting) { 3957 #ifndef VMS 3958 s = PerlEnv_getenv("PERL5LIB"); 3959 if (s) 3960 incpush(s, TRUE, TRUE, TRUE); 3961 else 3962 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE, TRUE); 3963 #else /* VMS */ 3964 /* Treat PERL5?LIB as a possible search list logical name -- the 3965 * "natural" VMS idiom for a Unix path string. We allow each 3966 * element to be a set of |-separated directories for compatibility. 3967 */ 3968 char buf[256]; 3969 int idx = 0; 3970 if (my_trnlnm("PERL5LIB",buf,0)) 3971 do { incpush(buf,TRUE,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx)); 3972 else 3973 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE,TRUE); 3974 #endif /* VMS */ 3975 } 3976 3977 /* Use the ~-expanded versions of APPLLIB (undocumented), 3978 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB 3979 */ 3980 #ifdef APPLLIB_EXP 3981 incpush(APPLLIB_EXP, TRUE, TRUE, TRUE); 3982 #endif 3983 3984 #ifdef ARCHLIB_EXP 3985 incpush(ARCHLIB_EXP, FALSE, FALSE, TRUE); 3986 #endif 3987 #ifdef MACOS_TRADITIONAL 3988 { 3989 Stat_t tmpstatbuf; 3990 SV * privdir = NEWSV(55, 0); 3991 char * macperl = PerlEnv_getenv("MACPERL"); 3992 3993 if (!macperl) 3994 macperl = ""; 3995 3996 Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl); 3997 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode)) 3998 incpush(SvPVX(privdir), TRUE, FALSE, TRUE); 3999 Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl); 4000 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode)) 4001 incpush(SvPVX(privdir), TRUE, FALSE, TRUE); 4002 4003 SvREFCNT_dec(privdir); 4004 } 4005 if (!PL_tainting) 4006 incpush(":", FALSE, FALSE, TRUE); 4007 #else 4008 #ifndef PRIVLIB_EXP 4009 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl" 4010 #endif 4011 #if defined(WIN32) 4012 incpush(PRIVLIB_EXP, TRUE, FALSE, TRUE); 4013 #else 4014 incpush(PRIVLIB_EXP, FALSE, FALSE, TRUE); 4015 #endif 4016 4017 #ifdef SITEARCH_EXP 4018 /* sitearch is always relative to sitelib on Windows for 4019 * DLL-based path intuition to work correctly */ 4020 # if !defined(WIN32) 4021 incpush(SITEARCH_EXP, FALSE, FALSE, TRUE); 4022 # endif 4023 #endif 4024 4025 #ifdef SITELIB_EXP 4026 # if defined(WIN32) 4027 /* this picks up sitearch as well */ 4028 incpush(SITELIB_EXP, TRUE, FALSE, TRUE); 4029 # else 4030 incpush(SITELIB_EXP, FALSE, FALSE, TRUE); 4031 # endif 4032 #endif 4033 4034 #ifdef SITELIB_STEM /* Search for version-specific dirs below here */ 4035 incpush(SITELIB_STEM, FALSE, TRUE, TRUE); 4036 #endif 4037 4038 #ifdef PERL_VENDORARCH_EXP 4039 /* vendorarch is always relative to vendorlib on Windows for 4040 * DLL-based path intuition to work correctly */ 4041 # if !defined(WIN32) 4042 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE, TRUE); 4043 # endif 4044 #endif 4045 4046 #ifdef PERL_VENDORLIB_EXP 4047 # if defined(WIN32) 4048 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE, TRUE); /* this picks up vendorarch as well */ 4049 # else 4050 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE, TRUE); 4051 # endif 4052 #endif 4053 4054 #ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */ 4055 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE, TRUE); 4056 #endif 4057 4058 #ifdef PERL_OTHERLIBDIRS 4059 incpush(PERL_OTHERLIBDIRS, TRUE, TRUE, TRUE); 4060 #endif 4061 4062 if (!PL_tainting) 4063 incpush(".", FALSE, FALSE, TRUE); 4064 #endif /* MACOS_TRADITIONAL */ 4065 } 4066 4067 #if defined(DOSISH) || defined(EPOC) 4068 # define PERLLIB_SEP ';' 4069 #else 4070 # if defined(VMS) 4071 # define PERLLIB_SEP '|' 4072 # else 4073 # if defined(MACOS_TRADITIONAL) 4074 # define PERLLIB_SEP ',' 4075 # else 4076 # define PERLLIB_SEP ':' 4077 # endif 4078 # endif 4079 #endif 4080 #ifndef PERLLIB_MANGLE 4081 # define PERLLIB_MANGLE(s,n) (s) 4082 #endif 4083 4084 STATIC void 4085 S_incpush(pTHX_ char *p, int addsubdirs, int addoldvers, int usesep) 4086 { 4087 SV *subdir = Nullsv; 4088 4089 if (!p || !*p) 4090 return; 4091 4092 if (addsubdirs || addoldvers) { 4093 subdir = sv_newmortal(); 4094 } 4095 4096 /* Break at all separators */ 4097 while (p && *p) { 4098 SV *libdir = NEWSV(55,0); 4099 char *s; 4100 4101 /* skip any consecutive separators */ 4102 if (usesep) { 4103 while ( *p == PERLLIB_SEP ) { 4104 /* Uncomment the next line for PATH semantics */ 4105 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */ 4106 p++; 4107 } 4108 } 4109 4110 if ( usesep && (s = strchr(p, PERLLIB_SEP)) != Nullch ) { 4111 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)), 4112 (STRLEN)(s - p)); 4113 p = s + 1; 4114 } 4115 else { 4116 sv_setpv(libdir, PERLLIB_MANGLE(p, 0)); 4117 p = Nullch; /* break out */ 4118 } 4119 #ifdef MACOS_TRADITIONAL 4120 if (!strchr(SvPVX(libdir), ':')) { 4121 char buf[256]; 4122 4123 sv_setpv(libdir, MacPerl_CanonDir(SvPVX(libdir), buf, 0)); 4124 } 4125 if (SvPVX(libdir)[SvCUR(libdir)-1] != ':') 4126 sv_catpv(libdir, ":"); 4127 #endif 4128 4129 /* 4130 * BEFORE pushing libdir onto @INC we may first push version- and 4131 * archname-specific sub-directories. 4132 */ 4133 if (addsubdirs || addoldvers) { 4134 #ifdef PERL_INC_VERSION_LIST 4135 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */ 4136 const char *incverlist[] = { PERL_INC_VERSION_LIST }; 4137 const char **incver; 4138 #endif 4139 Stat_t tmpstatbuf; 4140 #ifdef VMS 4141 char *unix; 4142 STRLEN len; 4143 4144 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) { 4145 len = strlen(unix); 4146 while (unix[len-1] == '/') len--; /* Cosmetic */ 4147 sv_usepvn(libdir,unix,len); 4148 } 4149 else 4150 PerlIO_printf(Perl_error_log, 4151 "Failed to unixify @INC element \"%s\"\n", 4152 SvPV(libdir,len)); 4153 #endif 4154 if (addsubdirs) { 4155 #ifdef MACOS_TRADITIONAL 4156 #define PERL_AV_SUFFIX_FMT "" 4157 #define PERL_ARCH_FMT "%s:" 4158 #define PERL_ARCH_FMT_PATH PERL_FS_VER_FMT PERL_AV_SUFFIX_FMT 4159 #else 4160 #define PERL_AV_SUFFIX_FMT "/" 4161 #define PERL_ARCH_FMT "/%s" 4162 #define PERL_ARCH_FMT_PATH PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT 4163 #endif 4164 /* .../version/archname if -d .../version/archname */ 4165 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH PERL_ARCH_FMT, 4166 libdir, 4167 (int)PERL_REVISION, (int)PERL_VERSION, 4168 (int)PERL_SUBVERSION, ARCHNAME); 4169 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 && 4170 S_ISDIR(tmpstatbuf.st_mode)) 4171 av_push(GvAVn(PL_incgv), newSVsv(subdir)); 4172 4173 /* .../version if -d .../version */ 4174 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH, libdir, 4175 (int)PERL_REVISION, (int)PERL_VERSION, 4176 (int)PERL_SUBVERSION); 4177 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 && 4178 S_ISDIR(tmpstatbuf.st_mode)) 4179 av_push(GvAVn(PL_incgv), newSVsv(subdir)); 4180 4181 /* .../archname if -d .../archname */ 4182 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, ARCHNAME); 4183 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 && 4184 S_ISDIR(tmpstatbuf.st_mode)) 4185 av_push(GvAVn(PL_incgv), newSVsv(subdir)); 4186 } 4187 4188 #ifdef PERL_INC_VERSION_LIST 4189 if (addoldvers) { 4190 for (incver = incverlist; *incver; incver++) { 4191 /* .../xxx if -d .../xxx */ 4192 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, *incver); 4193 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 && 4194 S_ISDIR(tmpstatbuf.st_mode)) 4195 av_push(GvAVn(PL_incgv), newSVsv(subdir)); 4196 } 4197 } 4198 #endif 4199 } 4200 4201 /* finally push this lib directory on the end of @INC */ 4202 av_push(GvAVn(PL_incgv), libdir); 4203 } 4204 } 4205 4206 #ifdef USE_5005THREADS 4207 STATIC struct perl_thread * 4208 S_init_main_thread(pTHX) 4209 { 4210 #if !defined(PERL_IMPLICIT_CONTEXT) 4211 struct perl_thread *thr; 4212 #endif 4213 XPV *xpv; 4214 4215 Newz(53, thr, 1, struct perl_thread); 4216 PL_curcop = &PL_compiling; 4217 thr->interp = PERL_GET_INTERP; 4218 thr->cvcache = newHV(); 4219 thr->threadsv = newAV(); 4220 /* thr->threadsvp is set when find_threadsv is called */ 4221 thr->specific = newAV(); 4222 thr->flags = THRf_R_JOINABLE; 4223 MUTEX_INIT(&thr->mutex); 4224 /* Handcraft thrsv similarly to mess_sv */ 4225 New(53, PL_thrsv, 1, SV); 4226 Newz(53, xpv, 1, XPV); 4227 SvFLAGS(PL_thrsv) = SVt_PV; 4228 SvANY(PL_thrsv) = (void*)xpv; 4229 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */ 4230 SvPVX(PL_thrsv) = (char*)thr; 4231 SvCUR_set(PL_thrsv, sizeof(thr)); 4232 SvLEN_set(PL_thrsv, sizeof(thr)); 4233 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */ 4234 thr->oursv = PL_thrsv; 4235 PL_chopset = " \n-"; 4236 PL_dumpindent = 4; 4237 4238 MUTEX_LOCK(&PL_threads_mutex); 4239 PL_nthreads++; 4240 thr->tid = 0; 4241 thr->next = thr; 4242 thr->prev = thr; 4243 thr->thr_done = 0; 4244 MUTEX_UNLOCK(&PL_threads_mutex); 4245 4246 #ifdef HAVE_THREAD_INTERN 4247 Perl_init_thread_intern(thr); 4248 #endif 4249 4250 #ifdef SET_THREAD_SELF 4251 SET_THREAD_SELF(thr); 4252 #else 4253 thr->self = pthread_self(); 4254 #endif /* SET_THREAD_SELF */ 4255 PERL_SET_THX(thr); 4256 4257 /* 4258 * These must come after the thread self setting 4259 * because sv_setpvn does SvTAINT and the taint 4260 * fields thread selfness being set. 4261 */ 4262 PL_toptarget = NEWSV(0,0); 4263 sv_upgrade(PL_toptarget, SVt_PVFM); 4264 sv_setpvn(PL_toptarget, "", 0); 4265 PL_bodytarget = NEWSV(0,0); 4266 sv_upgrade(PL_bodytarget, SVt_PVFM); 4267 sv_setpvn(PL_bodytarget, "", 0); 4268 PL_formtarget = PL_bodytarget; 4269 thr->errsv = newSVpvn("", 0); 4270 (void) find_threadsv("@"); /* Ensure $@ is initialised early */ 4271 4272 PL_maxscream = -1; 4273 PL_peepp = MEMBER_TO_FPTR(Perl_peep); 4274 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp); 4275 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags); 4276 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start); 4277 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string); 4278 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree); 4279 PL_regindent = 0; 4280 PL_reginterp_cnt = 0; 4281 4282 return thr; 4283 } 4284 #endif /* USE_5005THREADS */ 4285 4286 void 4287 Perl_call_list(pTHX_ I32 oldscope, AV *paramList) 4288 { 4289 SV *atsv; 4290 line_t oldline = CopLINE(PL_curcop); 4291 CV *cv; 4292 STRLEN len; 4293 int ret; 4294 dJMPENV; 4295 4296 while (AvFILL(paramList) >= 0) { 4297 cv = (CV*)av_shift(paramList); 4298 if (PL_savebegin) { 4299 if (paramList == PL_beginav) { 4300 /* save PL_beginav for compiler */ 4301 if (! PL_beginav_save) 4302 PL_beginav_save = newAV(); 4303 av_push(PL_beginav_save, (SV*)cv); 4304 } 4305 else if (paramList == PL_checkav) { 4306 /* save PL_checkav for compiler */ 4307 if (! PL_checkav_save) 4308 PL_checkav_save = newAV(); 4309 av_push(PL_checkav_save, (SV*)cv); 4310 } 4311 } else { 4312 SAVEFREESV(cv); 4313 } 4314 #ifdef PERL_FLEXIBLE_EXCEPTIONS 4315 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_list_body), cv); 4316 #else 4317 JMPENV_PUSH(ret); 4318 #endif 4319 switch (ret) { 4320 case 0: 4321 #ifndef PERL_FLEXIBLE_EXCEPTIONS 4322 call_list_body(cv); 4323 #endif 4324 atsv = ERRSV; 4325 (void)SvPV(atsv, len); 4326 if (len) { 4327 PL_curcop = &PL_compiling; 4328 CopLINE_set(PL_curcop, oldline); 4329 if (paramList == PL_beginav) 4330 sv_catpv(atsv, "BEGIN failed--compilation aborted"); 4331 else 4332 Perl_sv_catpvf(aTHX_ atsv, 4333 "%s failed--call queue aborted", 4334 paramList == PL_checkav ? "CHECK" 4335 : paramList == PL_initav ? "INIT" 4336 : "END"); 4337 while (PL_scopestack_ix > oldscope) 4338 LEAVE; 4339 JMPENV_POP; 4340 Perl_croak(aTHX_ "%"SVf"", atsv); 4341 } 4342 break; 4343 case 1: 4344 STATUS_ALL_FAILURE; 4345 /* FALL THROUGH */ 4346 case 2: 4347 /* my_exit() was called */ 4348 while (PL_scopestack_ix > oldscope) 4349 LEAVE; 4350 FREETMPS; 4351 PL_curstash = PL_defstash; 4352 PL_curcop = &PL_compiling; 4353 CopLINE_set(PL_curcop, oldline); 4354 JMPENV_POP; 4355 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) { 4356 if (paramList == PL_beginav) 4357 Perl_croak(aTHX_ "BEGIN failed--compilation aborted"); 4358 else 4359 Perl_croak(aTHX_ "%s failed--call queue aborted", 4360 paramList == PL_checkav ? "CHECK" 4361 : paramList == PL_initav ? "INIT" 4362 : "END"); 4363 } 4364 my_exit_jump(); 4365 /* NOTREACHED */ 4366 case 3: 4367 if (PL_restartop) { 4368 PL_curcop = &PL_compiling; 4369 CopLINE_set(PL_curcop, oldline); 4370 JMPENV_JUMP(3); 4371 } 4372 PerlIO_printf(Perl_error_log, "panic: restartop\n"); 4373 FREETMPS; 4374 break; 4375 } 4376 JMPENV_POP; 4377 } 4378 } 4379 4380 #ifdef PERL_FLEXIBLE_EXCEPTIONS 4381 STATIC void * 4382 S_vcall_list_body(pTHX_ va_list args) 4383 { 4384 CV *cv = va_arg(args, CV*); 4385 return call_list_body(cv); 4386 } 4387 #endif 4388 4389 STATIC void * 4390 S_call_list_body(pTHX_ CV *cv) 4391 { 4392 PUSHMARK(PL_stack_sp); 4393 call_sv((SV*)cv, G_EVAL|G_DISCARD); 4394 return NULL; 4395 } 4396 4397 void 4398 Perl_my_exit(pTHX_ U32 status) 4399 { 4400 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n", 4401 thr, (unsigned long) status)); 4402 switch (status) { 4403 case 0: 4404 STATUS_ALL_SUCCESS; 4405 break; 4406 case 1: 4407 STATUS_ALL_FAILURE; 4408 break; 4409 default: 4410 STATUS_NATIVE_SET(status); 4411 break; 4412 } 4413 my_exit_jump(); 4414 } 4415 4416 void 4417 Perl_my_failure_exit(pTHX) 4418 { 4419 #ifdef VMS 4420 if (vaxc$errno & 1) { 4421 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */ 4422 STATUS_NATIVE_SET(44); 4423 } 4424 else { 4425 if (!vaxc$errno && errno) /* unlikely */ 4426 STATUS_NATIVE_SET(44); 4427 else 4428 STATUS_NATIVE_SET(vaxc$errno); 4429 } 4430 #else 4431 int exitstatus; 4432 if (errno & 255) 4433 STATUS_POSIX_SET(errno); 4434 else { 4435 exitstatus = STATUS_POSIX >> 8; 4436 if (exitstatus & 255) 4437 STATUS_POSIX_SET(exitstatus); 4438 else 4439 STATUS_POSIX_SET(255); 4440 } 4441 #endif 4442 my_exit_jump(); 4443 } 4444 4445 STATIC void 4446 S_my_exit_jump(pTHX) 4447 { 4448 register PERL_CONTEXT *cx; 4449 I32 gimme; 4450 SV **newsp; 4451 4452 if (PL_e_script) { 4453 SvREFCNT_dec(PL_e_script); 4454 PL_e_script = Nullsv; 4455 } 4456 4457 POPSTACK_TO(PL_mainstack); 4458 if (cxstack_ix >= 0) { 4459 if (cxstack_ix > 0) 4460 dounwind(0); 4461 POPBLOCK(cx,PL_curpm); 4462 LEAVE; 4463 } 4464 4465 JMPENV_JUMP(2); 4466 } 4467 4468 static I32 4469 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen) 4470 { 4471 char *p, *nl; 4472 p = SvPVX(PL_e_script); 4473 nl = strchr(p, '\n'); 4474 nl = (nl) ? nl+1 : SvEND(PL_e_script); 4475 if (nl-p == 0) { 4476 filter_del(read_e_script); 4477 return 0; 4478 } 4479 sv_catpvn(buf_sv, p, nl-p); 4480 sv_chop(PL_e_script, nl); 4481 return 1; 4482 } 4483