3 * Copyright (c) 1987-2002 Larry Wall
5 * You may distribute under the terms of either the GNU General Public
6 * License or the Artistic License, as specified in the README file.
11 * "A ship then new they built for him/of mithril and of elven glass" --Bilbo
15 #define PERL_IN_PERL_C
17 #include "patchlevel.h" /* for local_patches */
19 /* XXX If this causes problems, set i_unistd=undef in the hint file. */
24 #if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
25 char *getenv (char *); /* Usually in <stdlib.h> */
28 static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
36 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
42 #if defined(USE_5005THREADS)
43 # define INIT_TLS_AND_INTERP \
45 if (!PL_curinterp) { \
46 PERL_SET_INTERP(my_perl); \
52 # if defined(USE_ITHREADS)
53 # define INIT_TLS_AND_INTERP \
55 if (!PL_curinterp) { \
56 PERL_SET_INTERP(my_perl); \
59 PERL_SET_THX(my_perl); \
63 PERL_SET_THX(my_perl); \
67 # define INIT_TLS_AND_INTERP \
69 if (!PL_curinterp) { \
70 PERL_SET_INTERP(my_perl); \
72 PERL_SET_THX(my_perl); \
77 #ifdef PERL_IMPLICIT_SYS
79 perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
80 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
81 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
82 struct IPerlDir* ipD, struct IPerlSock* ipS,
83 struct IPerlProc* ipP)
85 PerlInterpreter *my_perl;
86 /* New() needs interpreter, so call malloc() instead */
87 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
89 Zero(my_perl, 1, PerlInterpreter);
105 =head1 Embedding Functions
107 =for apidoc perl_alloc
109 Allocates a new Perl interpreter. See L<perlembed>.
117 PerlInterpreter *my_perl;
118 #ifdef USE_5005THREADS
122 /* New() needs interpreter, so call malloc() instead */
123 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
126 Zero(my_perl, 1, PerlInterpreter);
129 #endif /* PERL_IMPLICIT_SYS */
132 =for apidoc perl_construct
134 Initializes a new Perl interpreter. See L<perlembed>.
140 perl_construct(pTHXx)
142 #ifdef USE_5005THREADS
144 struct perl_thread *thr = NULL;
145 #endif /* FAKE_THREADS */
146 #endif /* USE_5005THREADS */
150 PL_perl_destruct_level = 1;
152 if (PL_perl_destruct_level > 0)
156 /* Init the real globals (and main thread)? */
158 #ifdef USE_5005THREADS
159 MUTEX_INIT(&PL_sv_mutex);
161 * Safe to use basic SV functions from now on (though
162 * not things like mortals or tainting yet).
164 MUTEX_INIT(&PL_eval_mutex);
165 COND_INIT(&PL_eval_cond);
166 MUTEX_INIT(&PL_threads_mutex);
167 COND_INIT(&PL_nthreads_cond);
168 # ifdef EMULATE_ATOMIC_REFCOUNTS
169 MUTEX_INIT(&PL_svref_mutex);
170 # endif /* EMULATE_ATOMIC_REFCOUNTS */
172 MUTEX_INIT(&PL_cred_mutex);
173 MUTEX_INIT(&PL_sv_lock_mutex);
174 MUTEX_INIT(&PL_fdpid_mutex);
176 thr = init_main_thread();
177 #endif /* USE_5005THREADS */
179 #ifdef PERL_FLEXIBLE_EXCEPTIONS
180 PL_protect = MEMBER_TO_FPTR(Perl_default_protect); /* for exceptions */
183 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
185 PL_linestr = NEWSV(65,79);
186 sv_upgrade(PL_linestr,SVt_PVIV);
188 if (!SvREADONLY(&PL_sv_undef)) {
189 /* set read-only and try to insure than we wont see REFCNT==0
192 SvREADONLY_on(&PL_sv_undef);
193 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
195 sv_setpv(&PL_sv_no,PL_No);
197 SvREADONLY_on(&PL_sv_no);
198 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
200 sv_setpv(&PL_sv_yes,PL_Yes);
202 SvREADONLY_on(&PL_sv_yes);
203 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
206 PL_sighandlerp = Perl_sighandler;
207 PL_pidstatus = newHV();
210 PL_rs = newSVpvn("\n", 1);
215 PL_lex_state = LEX_NOTPARSING;
221 SET_NUMERIC_STANDARD();
225 PL_patchlevel = NEWSV(0,4);
226 (void)SvUPGRADE(PL_patchlevel, SVt_PVNV);
227 if (PERL_REVISION > 127 || PERL_VERSION > 127 || PERL_SUBVERSION > 127)
228 SvGROW(PL_patchlevel, UTF8_MAXLEN*3+1);
229 s = (U8*)SvPVX(PL_patchlevel);
230 /* Build version strings using "native" characters */
231 s = uvchr_to_utf8(s, (UV)PERL_REVISION);
232 s = uvchr_to_utf8(s, (UV)PERL_VERSION);
233 s = uvchr_to_utf8(s, (UV)PERL_SUBVERSION);
235 SvCUR_set(PL_patchlevel, s - (U8*)SvPVX(PL_patchlevel));
236 SvPOK_on(PL_patchlevel);
237 SvNVX(PL_patchlevel) = (NV)PERL_REVISION
238 + ((NV)PERL_VERSION / (NV)1000)
239 #if defined(PERL_SUBVERSION) && PERL_SUBVERSION > 0
240 + ((NV)PERL_SUBVERSION / (NV)1000000)
243 SvNOK_on(PL_patchlevel); /* dual valued */
244 SvUTF8_on(PL_patchlevel);
245 SvREADONLY_on(PL_patchlevel);
248 #if defined(LOCAL_PATCH_COUNT)
249 PL_localpatches = local_patches; /* For possible -v */
252 #ifdef HAVE_INTERP_INTERN
256 PerlIO_init(aTHX); /* Hook to IO system */
258 PL_fdpid = newAV(); /* for remembering popen pids by fd */
259 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
260 PL_errors = newSVpvn("",0);
261 sv_setpvn(PERL_DEBUG_PAD(0), "", 0); /* For regex debugging. */
262 sv_setpvn(PERL_DEBUG_PAD(1), "", 0); /* ext/re needs these */
263 sv_setpvn(PERL_DEBUG_PAD(2), "", 0); /* even without DEBUGGING. */
265 PL_regex_padav = newAV();
266 av_push(PL_regex_padav,(SV*)newAV()); /* First entry is an array of empty elements */
267 PL_regex_pad = AvARRAY(PL_regex_padav);
269 #ifdef USE_REENTRANT_API
270 Perl_reentrant_init(aTHX);
273 /* Note that strtab is a rather special HV. Assumptions are made
274 about not iterating on it, and not adding tie magic to it.
275 It is properly deallocated in perl_destruct() */
278 #ifdef USE_5005THREADS
279 MUTEX_INIT(&PL_strtab_mutex);
281 HvSHAREKEYS_off(PL_strtab); /* mandatory */
282 hv_ksplit(PL_strtab, 512);
284 #if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
285 _dyld_lookup_and_bind
286 ("__environ", (unsigned long *) &environ_pointer, NULL);
289 #ifdef USE_ENVIRON_ARRAY
290 PL_origenviron = environ;
297 =for apidoc perl_destruct
299 Shuts down a Perl interpreter. See L<perlembed>.
307 volatile int destruct_level; /* 0=none, 1=full, 2=full with checks */
309 #ifdef USE_5005THREADS
312 #endif /* USE_5005THREADS */
314 /* wait for all pseudo-forked children to finish */
315 PERL_WAIT_FOR_CHILDREN;
317 #ifdef USE_5005THREADS
319 /* Pass 1 on any remaining threads: detach joinables, join zombies */
321 MUTEX_LOCK(&PL_threads_mutex);
322 DEBUG_S(PerlIO_printf(Perl_debug_log,
323 "perl_destruct: waiting for %d threads...\n",
325 for (t = thr->next; t != thr; t = t->next) {
326 MUTEX_LOCK(&t->mutex);
327 switch (ThrSTATE(t)) {
330 DEBUG_S(PerlIO_printf(Perl_debug_log,
331 "perl_destruct: joining zombie %p\n", t));
332 ThrSETSTATE(t, THRf_DEAD);
333 MUTEX_UNLOCK(&t->mutex);
336 * The SvREFCNT_dec below may take a long time (e.g. av
337 * may contain an object scalar whose destructor gets
338 * called) so we have to unlock threads_mutex and start
341 MUTEX_UNLOCK(&PL_threads_mutex);
343 SvREFCNT_dec((SV*)av);
344 DEBUG_S(PerlIO_printf(Perl_debug_log,
345 "perl_destruct: joined zombie %p OK\n", t));
347 case THRf_R_JOINABLE:
348 DEBUG_S(PerlIO_printf(Perl_debug_log,
349 "perl_destruct: detaching thread %p\n", t));
350 ThrSETSTATE(t, THRf_R_DETACHED);
352 * We unlock threads_mutex and t->mutex in the opposite order
353 * from which we locked them just so that DETACH won't
354 * deadlock if it panics. It's only a breach of good style
355 * not a bug since they are unlocks not locks.
357 MUTEX_UNLOCK(&PL_threads_mutex);
359 MUTEX_UNLOCK(&t->mutex);
362 DEBUG_S(PerlIO_printf(Perl_debug_log,
363 "perl_destruct: ignoring %p (state %u)\n",
365 MUTEX_UNLOCK(&t->mutex);
366 /* fall through and out */
369 /* We leave the above "Pass 1" loop with threads_mutex still locked */
371 /* Pass 2 on remaining threads: wait for the thread count to drop to one */
372 while (PL_nthreads > 1)
374 DEBUG_S(PerlIO_printf(Perl_debug_log,
375 "perl_destruct: final wait for %d threads\n",
377 COND_WAIT(&PL_nthreads_cond, &PL_threads_mutex);
379 /* At this point, we're the last thread */
380 MUTEX_UNLOCK(&PL_threads_mutex);
381 DEBUG_S(PerlIO_printf(Perl_debug_log, "perl_destruct: armageddon has arrived\n"));
382 MUTEX_DESTROY(&PL_threads_mutex);
383 COND_DESTROY(&PL_nthreads_cond);
385 #endif /* !defined(FAKE_THREADS) */
386 #endif /* USE_5005THREADS */
388 destruct_level = PL_perl_destruct_level;
392 if ((s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL"))) {
394 if (destruct_level < i)
401 if(PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
406 if (PL_endav && !PL_minus_c)
407 call_list(PL_scopestack_ix, PL_endav);
413 /* We must account for everything. */
415 /* Destroy the main CV and syntax tree */
417 PL_curpad = AvARRAY(PL_comppad);
418 op_free(PL_main_root);
419 PL_main_root = Nullop;
421 PL_curcop = &PL_compiling;
422 PL_main_start = Nullop;
423 SvREFCNT_dec(PL_main_cv);
427 /* Tell PerlIO we are about to tear things apart in case
428 we have layers which are using resources that should
432 PerlIO_destruct(aTHX);
434 if (PL_sv_objcount) {
436 * Try to destruct global references. We do this first so that the
437 * destructors and destructees still exist. Some sv's might remain.
438 * Non-referenced objects are on their own.
443 /* unhook hooks which will soon be, or use, destroyed data */
444 SvREFCNT_dec(PL_warnhook);
445 PL_warnhook = Nullsv;
446 SvREFCNT_dec(PL_diehook);
449 /* call exit list functions */
450 while (PL_exitlistlen-- > 0)
451 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
453 Safefree(PL_exitlist);
455 if (destruct_level == 0){
457 DEBUG_P(debprofdump());
459 #if defined(PERLIO_LAYERS)
460 /* No more IO - including error messages ! */
461 PerlIO_cleanup(aTHX);
464 /* The exit() function will do everything that needs doing. */
465 return STATUS_NATIVE_EXPORT;;
468 /* jettison our possibly duplicated environment */
469 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
470 * so we certainly shouldn't free it here
472 #if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
473 if (environ != PL_origenviron) {
476 for (i = 0; environ[i]; i++)
477 safesysfree(environ[i]);
479 /* Must use safesysfree() when working with environ. */
480 safesysfree(environ);
482 environ = PL_origenviron;
487 /* the syntax tree is shared between clones
488 * so op_free(PL_main_root) only ReREFCNT_dec's
489 * REGEXPs in the parent interpreter
490 * we need to manually ReREFCNT_dec for the clones
493 I32 i = AvFILLp(PL_regex_padav) + 1;
494 SV **ary = AvARRAY(PL_regex_padav);
498 REGEXP *re = INT2PTR(REGEXP *,SvIVX(resv));
500 if (SvFLAGS(resv) & SVf_BREAK) {
501 /* this is PL_reg_curpm, already freed
502 * flag is set in regexec.c:S_regtry
504 SvFLAGS(resv) &= ~SVf_BREAK;
506 else if(SvREPADTMP(resv)) {
507 SvREPADTMP_off(resv);
514 SvREFCNT_dec(PL_regex_padav);
515 PL_regex_padav = Nullav;
519 /* loosen bonds of global variables */
522 (void)PerlIO_close(PL_rsfp);
526 /* Filters for program text */
527 SvREFCNT_dec(PL_rsfp_filters);
528 PL_rsfp_filters = Nullav;
531 PL_preprocess = FALSE;
537 PL_doswitches = FALSE;
538 PL_dowarn = G_WARN_OFF;
539 PL_doextract = FALSE;
540 PL_sawampersand = FALSE; /* must save all match strings */
543 Safefree(PL_inplace);
545 SvREFCNT_dec(PL_patchlevel);
548 SvREFCNT_dec(PL_e_script);
549 PL_e_script = Nullsv;
552 while (--PL_origargc >= 0) {
553 Safefree(PL_origargv[PL_origargc]);
555 Safefree(PL_origargv);
557 /* magical thingies */
559 SvREFCNT_dec(PL_ofs_sv); /* $, */
562 SvREFCNT_dec(PL_ors_sv); /* $\ */
565 SvREFCNT_dec(PL_rs); /* $/ */
568 PL_multiline = 0; /* $* */
569 Safefree(PL_osname); /* $^O */
572 SvREFCNT_dec(PL_statname);
573 PL_statname = Nullsv;
576 /* defgv, aka *_ should be taken care of elsewhere */
578 /* clean up after study() */
579 SvREFCNT_dec(PL_lastscream);
580 PL_lastscream = Nullsv;
581 Safefree(PL_screamfirst);
583 Safefree(PL_screamnext);
587 Safefree(PL_efloatbuf);
588 PL_efloatbuf = Nullch;
591 /* startup and shutdown function lists */
592 SvREFCNT_dec(PL_beginav);
593 SvREFCNT_dec(PL_beginav_save);
594 SvREFCNT_dec(PL_endav);
595 SvREFCNT_dec(PL_checkav);
596 SvREFCNT_dec(PL_initav);
598 PL_beginav_save = Nullav;
603 /* shortcuts just get cleared */
609 PL_argvoutgv = Nullgv;
611 PL_stderrgv = Nullgv;
612 PL_last_in_gv = Nullgv;
614 PL_debstash = Nullhv;
616 /* reset so print() ends up where we expect */
619 SvREFCNT_dec(PL_argvout_stack);
620 PL_argvout_stack = Nullav;
622 SvREFCNT_dec(PL_modglobal);
623 PL_modglobal = Nullhv;
624 SvREFCNT_dec(PL_preambleav);
625 PL_preambleav = Nullav;
626 SvREFCNT_dec(PL_subname);
628 SvREFCNT_dec(PL_linestr);
630 SvREFCNT_dec(PL_pidstatus);
631 PL_pidstatus = Nullhv;
632 SvREFCNT_dec(PL_toptarget);
633 PL_toptarget = Nullsv;
634 SvREFCNT_dec(PL_bodytarget);
635 PL_bodytarget = Nullsv;
636 PL_formtarget = Nullsv;
638 /* free locale stuff */
639 #ifdef USE_LOCALE_COLLATE
640 Safefree(PL_collation_name);
641 PL_collation_name = Nullch;
644 #ifdef USE_LOCALE_NUMERIC
645 Safefree(PL_numeric_name);
646 PL_numeric_name = Nullch;
647 SvREFCNT_dec(PL_numeric_radix_sv);
650 /* clear utf8 character classes */
651 SvREFCNT_dec(PL_utf8_alnum);
652 SvREFCNT_dec(PL_utf8_alnumc);
653 SvREFCNT_dec(PL_utf8_ascii);
654 SvREFCNT_dec(PL_utf8_alpha);
655 SvREFCNT_dec(PL_utf8_space);
656 SvREFCNT_dec(PL_utf8_cntrl);
657 SvREFCNT_dec(PL_utf8_graph);
658 SvREFCNT_dec(PL_utf8_digit);
659 SvREFCNT_dec(PL_utf8_upper);
660 SvREFCNT_dec(PL_utf8_lower);
661 SvREFCNT_dec(PL_utf8_print);
662 SvREFCNT_dec(PL_utf8_punct);
663 SvREFCNT_dec(PL_utf8_xdigit);
664 SvREFCNT_dec(PL_utf8_mark);
665 SvREFCNT_dec(PL_utf8_toupper);
666 SvREFCNT_dec(PL_utf8_totitle);
667 SvREFCNT_dec(PL_utf8_tolower);
668 SvREFCNT_dec(PL_utf8_tofold);
669 PL_utf8_alnum = Nullsv;
670 PL_utf8_alnumc = Nullsv;
671 PL_utf8_ascii = Nullsv;
672 PL_utf8_alpha = Nullsv;
673 PL_utf8_space = Nullsv;
674 PL_utf8_cntrl = Nullsv;
675 PL_utf8_graph = Nullsv;
676 PL_utf8_digit = Nullsv;
677 PL_utf8_upper = Nullsv;
678 PL_utf8_lower = Nullsv;
679 PL_utf8_print = Nullsv;
680 PL_utf8_punct = Nullsv;
681 PL_utf8_xdigit = Nullsv;
682 PL_utf8_mark = Nullsv;
683 PL_utf8_toupper = Nullsv;
684 PL_utf8_totitle = Nullsv;
685 PL_utf8_tolower = Nullsv;
686 PL_utf8_tofold = Nullsv;
688 if (!specialWARN(PL_compiling.cop_warnings))
689 SvREFCNT_dec(PL_compiling.cop_warnings);
690 PL_compiling.cop_warnings = Nullsv;
691 if (!specialCopIO(PL_compiling.cop_io))
692 SvREFCNT_dec(PL_compiling.cop_io);
693 PL_compiling.cop_io = Nullsv;
694 CopFILE_free(&PL_compiling);
695 CopSTASH_free(&PL_compiling);
697 /* Prepare to destruct main symbol table. */
702 SvREFCNT_dec(PL_curstname);
703 PL_curstname = Nullsv;
705 /* clear queued errors */
706 SvREFCNT_dec(PL_errors);
710 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
711 if (PL_scopestack_ix != 0)
712 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
713 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
714 (long)PL_scopestack_ix);
715 if (PL_savestack_ix != 0)
716 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
717 "Unbalanced saves: %ld more saves than restores\n",
718 (long)PL_savestack_ix);
719 if (PL_tmps_floor != -1)
720 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
721 (long)PL_tmps_floor + 1);
722 if (cxstack_ix != -1)
723 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
724 (long)cxstack_ix + 1);
727 /* Now absolutely destruct everything, somehow or other, loops or no. */
728 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
729 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
731 /* the 2 is for PL_fdpid and PL_strtab */
732 while (PL_sv_count > 2 && sv_clean_all())
735 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
736 SvFLAGS(PL_fdpid) |= SVt_PVAV;
737 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
738 SvFLAGS(PL_strtab) |= SVt_PVHV;
740 AvREAL_off(PL_fdpid); /* no surviving entries */
741 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
744 #ifdef HAVE_INTERP_INTERN
748 /* Destruct the global string table. */
750 /* Yell and reset the HeVAL() slots that are still holding refcounts,
751 * so that sv_free() won't fail on them.
759 max = HvMAX(PL_strtab);
760 array = HvARRAY(PL_strtab);
763 if (hent && ckWARN_d(WARN_INTERNAL)) {
764 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
765 "Unbalanced string table refcount: (%d) for \"%s\"",
766 HeVAL(hent) - Nullsv, HeKEY(hent));
767 HeVAL(hent) = Nullsv;
777 SvREFCNT_dec(PL_strtab);
780 /* free the pointer table used for cloning */
781 ptr_table_free(PL_ptr_table);
784 /* free special SVs */
786 SvREFCNT(&PL_sv_yes) = 0;
787 sv_clear(&PL_sv_yes);
788 SvANY(&PL_sv_yes) = NULL;
789 SvFLAGS(&PL_sv_yes) = 0;
791 SvREFCNT(&PL_sv_no) = 0;
793 SvANY(&PL_sv_no) = NULL;
794 SvFLAGS(&PL_sv_no) = 0;
796 SvREFCNT(&PL_sv_undef) = 0;
797 SvREADONLY_off(&PL_sv_undef);
799 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
800 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
802 #if defined(PERLIO_LAYERS)
803 /* No more IO - including error messages ! */
804 PerlIO_cleanup(aTHX);
807 Safefree(PL_origfilename);
808 Safefree(PL_reg_start_tmp);
810 Safefree(PL_reg_curpm);
811 Safefree(PL_reg_poscache);
812 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
813 Safefree(PL_op_mask);
814 Safefree(PL_psig_ptr);
815 Safefree(PL_psig_name);
816 Safefree(PL_bitcount);
817 Safefree(PL_psig_pend);
819 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
821 DEBUG_P(debprofdump());
822 #ifdef USE_5005THREADS
823 MUTEX_DESTROY(&PL_strtab_mutex);
824 MUTEX_DESTROY(&PL_sv_mutex);
825 MUTEX_DESTROY(&PL_eval_mutex);
826 MUTEX_DESTROY(&PL_cred_mutex);
827 MUTEX_DESTROY(&PL_fdpid_mutex);
828 COND_DESTROY(&PL_eval_cond);
829 #ifdef EMULATE_ATOMIC_REFCOUNTS
830 MUTEX_DESTROY(&PL_svref_mutex);
831 #endif /* EMULATE_ATOMIC_REFCOUNTS */
833 /* As the penultimate thing, free the non-arena SV for thrsv */
834 Safefree(SvPVX(PL_thrsv));
835 Safefree(SvANY(PL_thrsv));
838 #endif /* USE_5005THREADS */
840 #ifdef USE_REENTRANT_API
841 Perl_reentrant_free(aTHX);
846 /* As the absolutely last thing, free the non-arena SV for mess() */
849 /* it could have accumulated taint magic */
850 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
853 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
854 moremagic = mg->mg_moremagic;
855 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
857 Safefree(mg->mg_ptr);
861 /* we know that type >= SVt_PV */
862 (void)SvOOK_off(PL_mess_sv);
863 Safefree(SvPVX(PL_mess_sv));
864 Safefree(SvANY(PL_mess_sv));
865 Safefree(PL_mess_sv);
868 return STATUS_NATIVE_EXPORT;
872 =for apidoc perl_free
874 Releases a Perl interpreter. See L<perlembed>.
882 #if defined(WIN32) || defined(NETWARE)
883 # if defined(PERL_IMPLICIT_SYS)
885 void *host = nw_internal_host;
887 void *host = w32_internal_host;
891 nw5_delete_internal_host(host);
893 win32_delete_internal_host(host);
904 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
906 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
907 PL_exitlist[PL_exitlistlen].fn = fn;
908 PL_exitlist[PL_exitlistlen].ptr = ptr;
913 =for apidoc perl_parse
915 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
921 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
926 #ifdef USE_5005THREADS
930 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
933 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
934 setuid perl scripts securely.\n");
940 /* we copy rather than point to argv
941 * since perl_clone will copy and perl_destruct
942 * has no way of knowing if we've made a copy or
946 New(0, PL_origargv, i+1, char*);
947 PL_origargv[i] = '\0';
949 PL_origargv[i] = savepv(argv[i]);
957 /* Come here if running an undumped a.out. */
959 PL_origfilename = savepv(argv[0]);
960 PL_do_undump = FALSE;
961 cxstack_ix = -1; /* start label stack again */
963 init_postdump_symbols(argc,argv,env);
968 PL_curpad = AvARRAY(PL_comppad);
969 op_free(PL_main_root);
970 PL_main_root = Nullop;
972 PL_main_start = Nullop;
973 SvREFCNT_dec(PL_main_cv);
977 oldscope = PL_scopestack_ix;
978 PL_dowarn = G_WARN_OFF;
980 #ifdef PERL_FLEXIBLE_EXCEPTIONS
981 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
987 #ifndef PERL_FLEXIBLE_EXCEPTIONS
988 parse_body(env,xsinit);
991 call_list(oldscope, PL_checkav);
998 /* my_exit() was called */
999 while (PL_scopestack_ix > oldscope)
1002 PL_curstash = PL_defstash;
1004 call_list(oldscope, PL_checkav);
1005 ret = STATUS_NATIVE_EXPORT;
1008 PerlIO_printf(Perl_error_log, "panic: top_env\n");
1016 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1018 S_vparse_body(pTHX_ va_list args)
1020 char **env = va_arg(args, char**);
1021 XSINIT_t xsinit = va_arg(args, XSINIT_t);
1023 return parse_body(env, xsinit);
1028 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
1030 int argc = PL_origargc;
1031 char **argv = PL_origargv;
1032 char *scriptname = NULL;
1034 VOL bool dosearch = FALSE;
1035 char *validarg = "";
1039 char *cddir = Nullch;
1041 sv_setpvn(PL_linestr,"",0);
1042 sv = newSVpvn("",0); /* first used for -I flags */
1046 for (argc--,argv++; argc > 0; argc--,argv++) {
1047 if (argv[0][0] != '-' || !argv[0][1])
1051 validarg = " PHOOEY ";
1060 win32_argv2utf8(argc-1, argv+1);
1063 #ifndef PERL_STRICT_CR
1087 if ((s = moreswitches(s)))
1092 if( !PL_tainting ) {
1093 PL_taint_warn = TRUE;
1100 PL_taint_warn = FALSE;
1105 #ifdef MACOS_TRADITIONAL
1106 /* ignore -e for Dev:Pseudo argument */
1107 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
1110 if (PL_euid != PL_uid || PL_egid != PL_gid)
1111 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
1113 PL_e_script = newSVpvn("",0);
1114 filter_add(read_e_script, NULL);
1117 sv_catpv(PL_e_script, s);
1119 sv_catpv(PL_e_script, argv[1]);
1123 Perl_croak(aTHX_ "No code specified for -e");
1124 sv_catpv(PL_e_script, "\n");
1127 case 'I': /* -I handled both here and in moreswitches() */
1129 if (!*++s && (s=argv[1]) != Nullch) {
1134 STRLEN len = strlen(s);
1135 p = savepvn(s, len);
1136 incpush(p, TRUE, TRUE);
1137 sv_catpvn(sv, "-I", 2);
1138 sv_catpvn(sv, p, len);
1139 sv_catpvn(sv, " ", 1);
1143 Perl_croak(aTHX_ "No directory specified for -I");
1147 PL_preprocess = TRUE;
1157 PL_preambleav = newAV();
1158 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
1160 PL_Sv = newSVpv("print myconfig();",0);
1162 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
1164 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
1166 sv_catpv(PL_Sv,"\" Compile-time options:");
1168 sv_catpv(PL_Sv," DEBUGGING");
1170 # ifdef MULTIPLICITY
1171 sv_catpv(PL_Sv," MULTIPLICITY");
1173 # ifdef USE_5005THREADS
1174 sv_catpv(PL_Sv," USE_5005THREADS");
1176 # ifdef USE_ITHREADS
1177 sv_catpv(PL_Sv," USE_ITHREADS");
1179 # ifdef USE_64_BIT_INT
1180 sv_catpv(PL_Sv," USE_64_BIT_INT");
1182 # ifdef USE_64_BIT_ALL
1183 sv_catpv(PL_Sv," USE_64_BIT_ALL");
1185 # ifdef USE_LONG_DOUBLE
1186 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1188 # ifdef USE_LARGE_FILES
1189 sv_catpv(PL_Sv," USE_LARGE_FILES");
1192 sv_catpv(PL_Sv," USE_SOCKS");
1194 # ifdef PERL_IMPLICIT_CONTEXT
1195 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1197 # ifdef PERL_IMPLICIT_SYS
1198 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1200 sv_catpv(PL_Sv,"\\n\",");
1202 #if defined(LOCAL_PATCH_COUNT)
1203 if (LOCAL_PATCH_COUNT > 0) {
1205 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
1206 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1207 if (PL_localpatches[i])
1208 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
1212 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
1215 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
1217 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
1220 sv_catpv(PL_Sv, "; \
1222 @env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; ");
1225 push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
1228 print \" \\%ENV:\\n @env\\n\" if @env; \
1229 print \" \\@INC:\\n @INC\\n\";");
1232 PL_Sv = newSVpv("config_vars(qw(",0);
1233 sv_catpv(PL_Sv, ++s);
1234 sv_catpv(PL_Sv, "))");
1237 av_push(PL_preambleav, PL_Sv);
1238 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1241 PL_doextract = TRUE;
1249 if (!*++s || isSPACE(*s)) {
1253 /* catch use of gnu style long options */
1254 if (strEQ(s, "version")) {
1258 if (strEQ(s, "help")) {
1265 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1271 #ifndef SECURE_INTERNAL_GETENV
1274 (s = PerlEnv_getenv("PERL5OPT")))
1279 if (*s == '-' && *(s+1) == 'T') {
1281 PL_taint_warn = FALSE;
1284 char *popt_copy = Nullch;
1297 if (!strchr("DIMUdmtw", *s))
1298 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
1302 popt_copy = SvPVX(sv_2mortal(newSVpv(popt,0)));
1303 s = popt_copy + (s - popt);
1304 d = popt_copy + (d - popt);
1311 if( !PL_tainting ) {
1312 PL_taint_warn = TRUE;
1322 if (PL_taint_warn && PL_dowarn != G_WARN_ALL_OFF) {
1323 PL_compiling.cop_warnings = newSVpvn(WARN_TAINTstring, WARNsize);
1327 scriptname = argv[0];
1330 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1332 else if (scriptname == Nullch) {
1334 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1342 open_script(scriptname,dosearch,sv,&fdscript);
1344 validate_suid(validarg, scriptname,fdscript);
1347 #if defined(SIGCHLD) || defined(SIGCLD)
1350 # define SIGCHLD SIGCLD
1352 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1353 if (sigstate == SIG_IGN) {
1354 if (ckWARN(WARN_SIGNAL))
1355 Perl_warner(aTHX_ packWARN(WARN_SIGNAL),
1356 "Can't ignore signal CHLD, forcing to default");
1357 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1363 #ifdef MACOS_TRADITIONAL
1364 if (PL_doextract || gMacPerl_AlwaysExtract) {
1369 if (cddir && PerlDir_chdir(cddir) < 0)
1370 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1374 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1375 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1376 CvUNIQUE_on(PL_compcv);
1378 PL_comppad = newAV();
1379 av_push(PL_comppad, Nullsv);
1380 PL_curpad = AvARRAY(PL_comppad);
1381 PL_comppad_name = newAV();
1382 PL_comppad_name_fill = 0;
1383 PL_min_intro_pending = 0;
1385 #ifdef USE_5005THREADS
1386 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
1387 PL_curpad[0] = (SV*)newAV();
1388 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1389 CvOWNER(PL_compcv) = 0;
1390 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1391 MUTEX_INIT(CvMUTEXP(PL_compcv));
1392 #endif /* USE_5005THREADS */
1394 comppadlist = newAV();
1395 AvREAL_off(comppadlist);
1396 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1397 av_store(comppadlist, 1, (SV*)PL_comppad);
1398 CvPADLIST(PL_compcv) = comppadlist;
1401 boot_core_UNIVERSAL();
1403 boot_core_xsutils();
1407 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
1409 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
1415 # ifdef HAS_SOCKS5_INIT
1416 socks5_init(argv[0]);
1422 init_predump_symbols();
1423 /* init_postdump_symbols not currently designed to be called */
1424 /* more than once (ENV isn't cleared first, for example) */
1425 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
1427 init_postdump_symbols(argc,argv,env);
1429 if (PL_wantutf8) { /* Requires init_predump_symbols(). */
1433 if (PL_stdingv && (io = GvIO(PL_stdingv)) && (fp = IoIFP(io)))
1434 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
1435 if (PL_defoutgv && (io = GvIO(PL_defoutgv)) && (fp = IoOFP(io)))
1436 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
1437 if (PL_stderrgv && (io = GvIO(PL_stderrgv)) && (fp = IoOFP(io)))
1438 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
1439 if ((sv = GvSV(gv_fetchpv("\017PEN", TRUE, SVt_PV)))) {
1440 sv_setpvn(sv, ":utf8\0:utf8", 11);
1447 /* now parse the script */
1449 SETERRNO(0,SS$_NORMAL);
1451 #ifdef MACOS_TRADITIONAL
1452 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1454 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1456 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1457 MacPerl_MPWFileName(PL_origfilename));
1461 if (yyparse() || PL_error_count) {
1463 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
1465 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1470 CopLINE_set(PL_curcop, 0);
1471 PL_curstash = PL_defstash;
1472 PL_preprocess = FALSE;
1474 SvREFCNT_dec(PL_e_script);
1475 PL_e_script = Nullsv;
1479 Not sure that this is still the right place to do this now that we
1480 no longer use PL_nrs. HVDS 2001/09/09
1482 sv_setsv(get_sv("/", TRUE), PL_rs);
1488 SAVECOPFILE(PL_curcop);
1489 SAVECOPLINE(PL_curcop);
1490 gv_check(PL_defstash);
1497 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1498 dump_mstats("after compilation:");
1507 =for apidoc perl_run
1509 Tells a Perl interpreter to run. See L<perlembed>.
1520 #ifdef USE_5005THREADS
1524 oldscope = PL_scopestack_ix;
1529 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1531 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1537 cxstack_ix = -1; /* start context stack again */
1539 case 0: /* normal completion */
1540 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1545 case 2: /* my_exit() */
1546 while (PL_scopestack_ix > oldscope)
1549 PL_curstash = PL_defstash;
1550 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
1551 PL_endav && !PL_minus_c)
1552 call_list(oldscope, PL_endav);
1554 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1555 dump_mstats("after execution: ");
1557 ret = STATUS_NATIVE_EXPORT;
1561 POPSTACK_TO(PL_mainstack);
1564 PerlIO_printf(Perl_error_log, "panic: restartop\n");
1574 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1576 S_vrun_body(pTHX_ va_list args)
1578 I32 oldscope = va_arg(args, I32);
1580 return run_body(oldscope);
1586 S_run_body(pTHX_ I32 oldscope)
1588 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
1589 PL_sawampersand ? "Enabling" : "Omitting"));
1591 if (!PL_restartop) {
1592 DEBUG_x(dump_all());
1593 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
1594 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1598 #ifdef MACOS_TRADITIONAL
1599 PerlIO_printf(Perl_error_log, "# %s syntax OK\n", MacPerl_MPWFileName(PL_origfilename));
1601 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
1605 if (PERLDB_SINGLE && PL_DBsingle)
1606 sv_setiv(PL_DBsingle, 1);
1608 call_list(oldscope, PL_initav);
1614 PL_op = PL_restartop;
1618 else if (PL_main_start) {
1619 CvDEPTH(PL_main_cv) = 1;
1620 PL_op = PL_main_start;
1630 =head1 SV Manipulation Functions
1632 =for apidoc p||get_sv
1634 Returns the SV of the specified Perl scalar. If C<create> is set and the
1635 Perl variable does not exist then it will be created. If C<create> is not
1636 set and the variable does not exist then NULL is returned.
1642 Perl_get_sv(pTHX_ const char *name, I32 create)
1645 #ifdef USE_5005THREADS
1646 if (name[1] == '\0' && !isALPHA(name[0])) {
1647 PADOFFSET tmp = find_threadsv(name);
1648 if (tmp != NOT_IN_PAD)
1649 return THREADSV(tmp);
1651 #endif /* USE_5005THREADS */
1652 gv = gv_fetchpv(name, create, SVt_PV);
1659 =head1 Array Manipulation Functions
1661 =for apidoc p||get_av
1663 Returns the AV of the specified Perl array. If C<create> is set and the
1664 Perl variable does not exist then it will be created. If C<create> is not
1665 set and the variable does not exist then NULL is returned.
1671 Perl_get_av(pTHX_ const char *name, I32 create)
1673 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1682 =head1 Hash Manipulation Functions
1684 =for apidoc p||get_hv
1686 Returns the HV of the specified Perl hash. If C<create> is set and the
1687 Perl variable does not exist then it will be created. If C<create> is not
1688 set and the variable does not exist then NULL is returned.
1694 Perl_get_hv(pTHX_ const char *name, I32 create)
1696 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1705 =head1 CV Manipulation Functions
1707 =for apidoc p||get_cv
1709 Returns the CV of the specified Perl subroutine. If C<create> is set and
1710 the Perl subroutine does not exist then it will be declared (which has the
1711 same effect as saying C<sub name;>). If C<create> is not set and the
1712 subroutine does not exist then NULL is returned.
1718 Perl_get_cv(pTHX_ const char *name, I32 create)
1720 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
1721 /* XXX unsafe for threads if eval_owner isn't held */
1722 /* XXX this is probably not what they think they're getting.
1723 * It has the same effect as "sub name;", i.e. just a forward
1725 if (create && !GvCVu(gv))
1726 return newSUB(start_subparse(FALSE, 0),
1727 newSVOP(OP_CONST, 0, newSVpv(name,0)),
1735 /* Be sure to refetch the stack pointer after calling these routines. */
1739 =head1 Callback Functions
1741 =for apidoc p||call_argv
1743 Performs a callback to the specified Perl sub. See L<perlcall>.
1749 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
1751 /* See G_* flags in cop.h */
1752 /* null terminated arg list */
1759 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
1764 return call_pv(sub_name, flags);
1768 =for apidoc p||call_pv
1770 Performs a callback to the specified Perl sub. See L<perlcall>.
1776 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
1777 /* name of the subroutine */
1778 /* See G_* flags in cop.h */
1780 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
1784 =for apidoc p||call_method
1786 Performs a callback to the specified Perl method. The blessed object must
1787 be on the stack. See L<perlcall>.
1793 Perl_call_method(pTHX_ const char *methname, I32 flags)
1794 /* name of the subroutine */
1795 /* See G_* flags in cop.h */
1797 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
1800 /* May be called with any of a CV, a GV, or an SV containing the name. */
1802 =for apidoc p||call_sv
1804 Performs a callback to the Perl sub whose name is in the SV. See
1811 Perl_call_sv(pTHX_ SV *sv, I32 flags)
1812 /* See G_* flags in cop.h */
1815 LOGOP myop; /* fake syntax tree node */
1818 volatile I32 retval = 0;
1820 bool oldcatch = CATCH_GET;
1825 if (flags & G_DISCARD) {
1830 Zero(&myop, 1, LOGOP);
1831 myop.op_next = Nullop;
1832 if (!(flags & G_NOARGS))
1833 myop.op_flags |= OPf_STACKED;
1834 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1835 (flags & G_ARRAY) ? OPf_WANT_LIST :
1840 EXTEND(PL_stack_sp, 1);
1841 *++PL_stack_sp = sv;
1843 oldscope = PL_scopestack_ix;
1845 if (PERLDB_SUB && PL_curstash != PL_debstash
1846 /* Handle first BEGIN of -d. */
1847 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
1848 /* Try harder, since this may have been a sighandler, thus
1849 * curstash may be meaningless. */
1850 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
1851 && !(flags & G_NODEBUG))
1852 PL_op->op_private |= OPpENTERSUB_DB;
1854 if (flags & G_METHOD) {
1855 Zero(&method_op, 1, UNOP);
1856 method_op.op_next = PL_op;
1857 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1858 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
1859 PL_op = (OP*)&method_op;
1862 if (!(flags & G_EVAL)) {
1864 call_body((OP*)&myop, FALSE);
1865 retval = PL_stack_sp - (PL_stack_base + oldmark);
1866 CATCH_SET(oldcatch);
1869 myop.op_other = (OP*)&myop;
1871 /* we're trying to emulate pp_entertry() here */
1873 register PERL_CONTEXT *cx;
1874 I32 gimme = GIMME_V;
1879 push_return(Nullop);
1880 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
1882 PL_eval_root = PL_op; /* Only needed so that goto works right. */
1884 PL_in_eval = EVAL_INEVAL;
1885 if (flags & G_KEEPERR)
1886 PL_in_eval |= EVAL_KEEPERR;
1892 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1894 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1901 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1903 call_body((OP*)&myop, FALSE);
1905 retval = PL_stack_sp - (PL_stack_base + oldmark);
1906 if (!(flags & G_KEEPERR))
1913 /* my_exit() was called */
1914 PL_curstash = PL_defstash;
1917 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1918 Perl_croak(aTHX_ "Callback called exit");
1923 PL_op = PL_restartop;
1927 PL_stack_sp = PL_stack_base + oldmark;
1928 if (flags & G_ARRAY)
1932 *++PL_stack_sp = &PL_sv_undef;
1937 if (PL_scopestack_ix > oldscope) {
1941 register PERL_CONTEXT *cx;
1953 if (flags & G_DISCARD) {
1954 PL_stack_sp = PL_stack_base + oldmark;
1963 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1965 S_vcall_body(pTHX_ va_list args)
1967 OP *myop = va_arg(args, OP*);
1968 int is_eval = va_arg(args, int);
1970 call_body(myop, is_eval);
1976 S_call_body(pTHX_ OP *myop, int is_eval)
1978 if (PL_op == myop) {
1980 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
1982 PL_op = Perl_pp_entersub(aTHX); /* this does */
1988 /* Eval a string. The G_EVAL flag is always assumed. */
1991 =for apidoc p||eval_sv
1993 Tells Perl to C<eval> the string in the SV.
1999 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
2001 /* See G_* flags in cop.h */
2004 UNOP myop; /* fake syntax tree node */
2005 volatile I32 oldmark = SP - PL_stack_base;
2006 volatile I32 retval = 0;
2012 if (flags & G_DISCARD) {
2019 Zero(PL_op, 1, UNOP);
2020 EXTEND(PL_stack_sp, 1);
2021 *++PL_stack_sp = sv;
2022 oldscope = PL_scopestack_ix;
2024 if (!(flags & G_NOARGS))
2025 myop.op_flags = OPf_STACKED;
2026 myop.op_next = Nullop;
2027 myop.op_type = OP_ENTEREVAL;
2028 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
2029 (flags & G_ARRAY) ? OPf_WANT_LIST :
2031 if (flags & G_KEEPERR)
2032 myop.op_flags |= OPf_SPECIAL;
2034 #ifdef PERL_FLEXIBLE_EXCEPTIONS
2036 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
2043 #ifndef PERL_FLEXIBLE_EXCEPTIONS
2045 call_body((OP*)&myop,TRUE);
2047 retval = PL_stack_sp - (PL_stack_base + oldmark);
2048 if (!(flags & G_KEEPERR))
2055 /* my_exit() was called */
2056 PL_curstash = PL_defstash;
2059 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
2060 Perl_croak(aTHX_ "Callback called exit");
2065 PL_op = PL_restartop;
2069 PL_stack_sp = PL_stack_base + oldmark;
2070 if (flags & G_ARRAY)
2074 *++PL_stack_sp = &PL_sv_undef;
2080 if (flags & G_DISCARD) {
2081 PL_stack_sp = PL_stack_base + oldmark;
2091 =for apidoc p||eval_pv
2093 Tells Perl to C<eval> the given string and return an SV* result.
2099 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
2102 SV* sv = newSVpv(p, 0);
2104 eval_sv(sv, G_SCALAR);
2111 if (croak_on_error && SvTRUE(ERRSV)) {
2113 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
2119 /* Require a module. */
2122 =head1 Embedding Functions
2124 =for apidoc p||require_pv
2126 Tells Perl to C<require> the file named by the string argument. It is
2127 analogous to the Perl code C<eval "require '$file'">. It's even
2128 implemented that way; consider using Perl_load_module instead.
2133 Perl_require_pv(pTHX_ const char *pv)
2137 PUSHSTACKi(PERLSI_REQUIRE);
2139 sv = sv_newmortal();
2140 sv_setpv(sv, "require '");
2143 eval_sv(sv, G_DISCARD);
2149 Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
2153 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
2154 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
2158 S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
2160 /* This message really ought to be max 23 lines.
2161 * Removed -h because the user already knows that option. Others? */
2163 static char *usage_msg[] = {
2164 "-0[octal] specify record separator (\\0, if no argument)",
2165 "-a autosplit mode with -n or -p (splits $_ into @F)",
2166 "-C enable native wide character system interfaces",
2167 "-c check syntax only (runs BEGIN and CHECK blocks)",
2168 "-d[:debugger] run program under debugger",
2169 "-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2170 "-e 'command' one line of program (several -e's allowed, omit programfile)",
2171 "-F/pattern/ split() pattern for -a switch (//'s are optional)",
2172 "-i[extension] edit <> files in place (makes backup if extension supplied)",
2173 "-Idirectory specify @INC/#include directory (several -I's allowed)",
2174 "-l[octal] enable line ending processing, specifies line terminator",
2175 "-[mM][-]module execute `use/no module...' before executing program",
2176 "-n assume 'while (<>) { ... }' loop around program",
2177 "-p assume loop like -n but print line also, like sed",
2178 "-P run program through C preprocessor before compilation",
2179 "-s enable rudimentary parsing for switches after programfile",
2180 "-S look for programfile using PATH environment variable",
2181 "-T enable tainting checks",
2182 "-t enable tainting warnings",
2183 "-u dump core after parsing program",
2184 "-U allow unsafe operations",
2185 "-v print version, subversion (includes VERY IMPORTANT perl info)",
2186 "-V[:variable] print configuration summary (or a single Config.pm variable)",
2187 "-w enable many useful warnings (RECOMMENDED)",
2188 "-W enable all warnings",
2189 "-X disable all warnings",
2190 "-x[directory] strip off text before #!perl line and perhaps cd to directory",
2194 char **p = usage_msg;
2196 PerlIO_printf(PerlIO_stdout(),
2197 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2200 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
2203 /* This routine handles any switches that can be given during run */
2206 Perl_moreswitches(pTHX_ char *s)
2216 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
2217 SvREFCNT_dec(PL_rs);
2218 if (rschar & ~((U8)~0))
2219 PL_rs = &PL_sv_undef;
2220 else if (!rschar && numlen >= 2)
2221 PL_rs = newSVpvn("", 0);
2224 PL_rs = newSVpvn(&ch, 1);
2229 PL_widesyscalls = TRUE;
2235 while (*s && !isSPACE(*s)) ++s;
2237 PL_splitstr = savepv(PL_splitstr);
2250 /* The following permits -d:Mod to accepts arguments following an =
2251 in the fashion that -MSome::Mod does. */
2252 if (*s == ':' || *s == '=') {
2255 sv = newSVpv("use Devel::", 0);
2257 /* We now allow -d:Module=Foo,Bar */
2258 while(isALNUM(*s) || *s==':') ++s;
2260 sv_catpv(sv, start);
2262 sv_catpvn(sv, start, s-start);
2263 sv_catpv(sv, " split(/,/,q{");
2268 my_setenv("PERL5DB", SvPV(sv, PL_na));
2271 PL_perldb = PERLDB_ALL;
2279 if (isALPHA(s[1])) {
2280 /* if adding extra options, remember to update DEBUG_MASK */
2281 static char debopts[] = "psltocPmfrxuLHXDSTRJ";
2284 for (s++; *s && (d = strchr(debopts,*s)); s++)
2285 PL_debug |= 1 << (d - debopts);
2288 PL_debug = atoi(s+1);
2289 for (s++; isDIGIT(*s); s++) ;
2292 if (DEBUG_p_TEST_ && ckWARN_d(WARN_DEBUGGING))
2293 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2294 "-Dp not implemented on this platform\n");
2296 PL_debug |= DEBUG_TOP_FLAG;
2297 #else /* !DEBUGGING */
2298 if (ckWARN_d(WARN_DEBUGGING))
2299 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2300 "Recompile perl with -DDEBUGGING to use -D switch\n");
2301 for (s++; isALNUM(*s); s++) ;
2307 usage(PL_origargv[0]);
2311 Safefree(PL_inplace);
2312 PL_inplace = savepv(s+1);
2314 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
2317 if (*s == '-') /* Additional switches on #! line. */
2321 case 'I': /* -I handled both here and in parse_body() */
2324 while (*s && isSPACE(*s))
2329 /* ignore trailing spaces (possibly followed by other switches) */
2331 for (e = p; *e && !isSPACE(*e); e++) ;
2335 } while (*p && *p != '-');
2336 e = savepvn(s, e-s);
2337 incpush(e, TRUE, TRUE);
2344 Perl_croak(aTHX_ "No directory specified for -I");
2350 SvREFCNT_dec(PL_ors_sv);
2355 PL_ors_sv = newSVpvn("\n",1);
2356 numlen = 3 + (*s == '0');
2357 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
2361 if (RsPARA(PL_rs)) {
2362 PL_ors_sv = newSVpvn("\n\n",2);
2365 PL_ors_sv = newSVsv(PL_rs);
2370 forbid_setid("-M"); /* XXX ? */
2373 forbid_setid("-m"); /* XXX ? */
2378 /* -M-foo == 'no foo' */
2379 if (*s == '-') { use = "no "; ++s; }
2380 sv = newSVpv(use,0);
2382 /* We allow -M'Module qw(Foo Bar)' */
2383 while(isALNUM(*s) || *s==':') ++s;
2385 sv_catpv(sv, start);
2386 if (*(start-1) == 'm') {
2388 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
2389 sv_catpv( sv, " ()");
2393 Perl_croak(aTHX_ "Module name required with -%c option",
2395 sv_catpvn(sv, start, s-start);
2396 sv_catpv(sv, " split(/,/,q{");
2402 PL_preambleav = newAV();
2403 av_push(PL_preambleav, sv);
2406 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
2418 PL_doswitches = TRUE;
2423 Perl_croak(aTHX_ "Too late for \"-t\" option");
2428 Perl_croak(aTHX_ "Too late for \"-T\" option");
2432 #ifdef MACOS_TRADITIONAL
2433 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2435 PL_do_undump = TRUE;
2444 PerlIO_printf(PerlIO_stdout(),
2445 Perl_form(aTHX_ "\nThis is perl, v%"VDf" built for %s",
2446 PL_patchlevel, ARCHNAME));
2448 /* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
2449 PerlIO_printf(PerlIO_stdout(),
2450 Perl_form(aTHX_ "\nThis is perl, version %vd\n", PL_patchlevel));
2451 PerlIO_printf(PerlIO_stdout(),
2452 Perl_form(aTHX_ " built under %s at %s %s\n",
2453 OSNAME, __DATE__, __TIME__));
2454 PerlIO_printf(PerlIO_stdout(),
2455 Perl_form(aTHX_ " OS Specific Release: %s\n",
2459 #if defined(LOCAL_PATCH_COUNT)
2460 if (LOCAL_PATCH_COUNT > 0)
2461 PerlIO_printf(PerlIO_stdout(),
2462 "\n(with %d registered patch%s, "
2463 "see perl -V for more detail)",
2464 (int)LOCAL_PATCH_COUNT,
2465 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
2468 PerlIO_printf(PerlIO_stdout(),
2469 "\n\nCopyright 1987-2002, Larry Wall\n");
2470 #ifdef MACOS_TRADITIONAL
2471 PerlIO_printf(PerlIO_stdout(),
2472 "\nMac OS port Copyright 1991-2002, Matthias Neeracher;\n"
2473 "maintained by Chris Nandor\n");
2476 PerlIO_printf(PerlIO_stdout(),
2477 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
2480 PerlIO_printf(PerlIO_stdout(),
2481 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2482 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
2485 PerlIO_printf(PerlIO_stdout(),
2486 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2487 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
2490 PerlIO_printf(PerlIO_stdout(),
2491 "atariST series port, ++jrb bammi@cadence.com\n");
2494 PerlIO_printf(PerlIO_stdout(),
2495 "BeOS port Copyright Tom Spindler, 1997-1999\n");
2498 PerlIO_printf(PerlIO_stdout(),
2499 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2002\n");
2502 PerlIO_printf(PerlIO_stdout(),
2503 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
2506 PerlIO_printf(PerlIO_stdout(),
2507 "Stratus VOS port by Paul_Green@stratus.com, 1997-2002\n");
2510 PerlIO_printf(PerlIO_stdout(),
2511 "VM/ESA port by Neale Ferguson, 1998-1999\n");
2514 PerlIO_printf(PerlIO_stdout(),
2515 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
2518 PerlIO_printf(PerlIO_stdout(),
2519 "MiNT port by Guido Flohr, 1997-1999\n");
2522 PerlIO_printf(PerlIO_stdout(),
2523 "EPOC port by Olaf Flebbe, 1999-2002\n");
2526 printf("WINCE port by Rainer Keuchel, 2001-2002\n");
2527 printf("Built on " __DATE__ " " __TIME__ "\n\n");
2530 #ifdef BINARY_BUILD_NOTICE
2531 BINARY_BUILD_NOTICE;
2533 PerlIO_printf(PerlIO_stdout(),
2535 Perl may be copied only under the terms of either the Artistic License or the\n\
2536 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
2537 Complete documentation for Perl, including FAQ lists, should be found on\n\
2538 this system using `man perl' or `perldoc perl'. If you have access to the\n\
2539 Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
2542 if (! (PL_dowarn & G_WARN_ALL_MASK))
2543 PL_dowarn |= G_WARN_ON;
2547 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
2548 if (!specialWARN(PL_compiling.cop_warnings))
2549 SvREFCNT_dec(PL_compiling.cop_warnings);
2550 PL_compiling.cop_warnings = pWARN_ALL ;
2554 PL_dowarn = G_WARN_ALL_OFF;
2555 if (!specialWARN(PL_compiling.cop_warnings))
2556 SvREFCNT_dec(PL_compiling.cop_warnings);
2557 PL_compiling.cop_warnings = pWARN_NONE ;
2562 if (s[1] == '-') /* Additional switches on #! line. */
2567 #if defined(WIN32) || !defined(PERL_STRICT_CR)
2573 #ifdef ALTERNATE_SHEBANG
2574 case 'S': /* OS/2 needs -S on "extproc" line. */
2582 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
2587 /* compliments of Tom Christiansen */
2589 /* unexec() can be found in the Gnu emacs distribution */
2590 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
2593 Perl_my_unexec(pTHX)
2601 prog = newSVpv(BIN_EXP, 0);
2602 sv_catpv(prog, "/perl");
2603 file = newSVpv(PL_origfilename, 0);
2604 sv_catpv(file, ".perldump");
2606 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2607 /* unexec prints msg to stderr in case of failure */
2608 PerlProc_exit(status);
2611 # include <lib$routines.h>
2612 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
2614 ABORT(); /* for use with undump */
2619 /* initialize curinterp */
2625 # define PERLVAR(var,type)
2626 # define PERLVARA(var,n,type)
2627 # if defined(PERL_IMPLICIT_CONTEXT)
2628 # if defined(USE_5005THREADS)
2629 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2630 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2631 # else /* !USE_5005THREADS */
2632 # define PERLVARI(var,type,init) aTHX->var = init;
2633 # define PERLVARIC(var,type,init) aTHX->var = init;
2634 # endif /* USE_5005THREADS */
2636 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2637 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2639 # include "intrpvar.h"
2640 # ifndef USE_5005THREADS
2641 # include "thrdvar.h"
2648 # define PERLVAR(var,type)
2649 # define PERLVARA(var,n,type)
2650 # define PERLVARI(var,type,init) PL_##var = init;
2651 # define PERLVARIC(var,type,init) PL_##var = init;
2652 # include "intrpvar.h"
2653 # ifndef USE_5005THREADS
2654 # include "thrdvar.h"
2665 S_init_main_stash(pTHX)
2671 PL_curstash = PL_defstash = newHV();
2672 PL_curstname = newSVpvn("main",4);
2673 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2674 SvREFCNT_dec(GvHV(gv));
2675 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
2677 HvNAME(PL_defstash) = savepv("main");
2678 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2679 GvMULTI_on(PL_incgv);
2680 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2681 GvMULTI_on(PL_hintgv);
2682 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2683 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2684 GvMULTI_on(PL_errgv);
2685 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2686 GvMULTI_on(PL_replgv);
2687 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
2688 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2689 sv_setpvn(ERRSV, "", 0);
2690 PL_curstash = PL_defstash;
2691 CopSTASH_set(&PL_compiling, PL_defstash);
2692 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
2693 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
2694 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
2695 /* We must init $/ before switches are processed. */
2696 sv_setpvn(get_sv("/", TRUE), "\n", 1);
2700 S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
2704 char *cpp_discard_flag;
2710 PL_origfilename = savepv("-e");
2713 /* if find_script() returns, it returns a malloc()-ed value */
2714 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
2716 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2717 char *s = scriptname + 8;
2718 *fdscript = atoi(s);
2722 scriptname = savepv(s + 1);
2723 Safefree(PL_origfilename);
2724 PL_origfilename = scriptname;
2729 CopFILE_free(PL_curcop);
2730 CopFILE_set(PL_curcop, PL_origfilename);
2731 if (strEQ(PL_origfilename,"-"))
2733 if (*fdscript >= 0) {
2734 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
2735 # if defined(HAS_FCNTL) && defined(F_SETFD)
2737 /* ensure close-on-exec */
2738 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1);
2741 else if (PL_preprocess) {
2742 char *cpp_cfg = CPPSTDIN;
2743 SV *cpp = newSVpvn("",0);
2744 SV *cmd = NEWSV(0,0);
2746 if (strEQ(cpp_cfg, "cppstdin"))
2747 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
2748 sv_catpv(cpp, cpp_cfg);
2751 sv_catpvn(sv, "-I", 2);
2752 sv_catpv(sv,PRIVLIB_EXP);
2755 DEBUG_P(PerlIO_printf(Perl_debug_log,
2756 "PL_preprocess: scriptname=\"%s\", cpp=\"%s\", sv=\"%s\", CPPMINUS=\"%s\"\n",
2757 scriptname, SvPVX (cpp), SvPVX (sv), CPPMINUS));
2759 # if defined(MSDOS) || defined(WIN32) || defined(VMS)
2766 cpp_discard_flag = "";
2768 cpp_discard_flag = "-C";
2772 perl = os2_execname(aTHX);
2774 perl = PL_origargv[0];
2778 /* This strips off Perl comments which might interfere with
2779 the C pre-processor, including #!. #line directives are
2780 deliberately stripped to avoid confusion with Perl's version
2781 of #line. FWP played some golf with it so it will fit
2782 into VMS's 255 character buffer.
2785 code = "(1../^#!.*perl/i)|/^\\s*#(?!\\s*((ifn?|un)def|(el|end)?if|define|include|else|error|pragma)\\b)/||!($|=1)||print";
2787 code = "/^\\s*#(?!\\s*((ifn?|un)def|(el|end)?if|define|include|else|error|pragma)\\b)/||!($|=1)||print";
2789 Perl_sv_setpvf(aTHX_ cmd, "\
2790 %s -ne%s%s%s %s | %"SVf" %s %"SVf" %s",
2791 perl, quote, code, quote, scriptname, cpp,
2792 cpp_discard_flag, sv, CPPMINUS);
2794 PL_doextract = FALSE;
2795 # ifdef IAMSUID /* actually, this is caught earlier */
2796 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
2798 (void)seteuid(PL_uid); /* musn't stay setuid root */
2800 # ifdef HAS_SETREUID
2801 (void)setreuid((Uid_t)-1, PL_uid);
2803 # ifdef HAS_SETRESUID
2804 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
2806 PerlProc_setuid(PL_uid);
2810 if (PerlProc_geteuid() != PL_uid)
2811 Perl_croak(aTHX_ "Can't do seteuid!\n");
2813 # endif /* IAMSUID */
2815 DEBUG_P(PerlIO_printf(Perl_debug_log,
2816 "PL_preprocess: cmd=\"%s\"\n",
2819 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
2823 else if (!*scriptname) {
2824 forbid_setid("program input from stdin");
2825 PL_rsfp = PerlIO_stdin();
2828 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
2829 # if defined(HAS_FCNTL) && defined(F_SETFD)
2831 /* ensure close-on-exec */
2832 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1);
2837 # ifndef IAMSUID /* in case script is not readable before setuid */
2839 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
2840 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2843 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT,
2844 BIN_EXP, (int)PERL_REVISION,
2846 (int)PERL_SUBVERSION), PL_origargv);
2847 Perl_croak(aTHX_ "Can't do setuid\n");
2853 Perl_croak(aTHX_ "Can't open perl script: %s\n",
2856 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
2857 CopFILE(PL_curcop), Strerror(errno));
2863 * I_SYSSTATVFS HAS_FSTATVFS
2865 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
2866 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2867 * here so that metaconfig picks them up. */
2871 S_fd_on_nosuid_fs(pTHX_ int fd)
2873 int check_okay = 0; /* able to do all the required sys/libcalls */
2874 int on_nosuid = 0; /* the fd is on a nosuid fs */
2876 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
2877 * fstatvfs() is UNIX98.
2878 * fstatfs() is 4.3 BSD.
2879 * ustat()+getmnt() is pre-4.3 BSD.
2880 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2881 * an irrelevant filesystem while trying to reach the right one.
2884 #undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2886 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2887 defined(HAS_FSTATVFS)
2888 # define FD_ON_NOSUID_CHECK_OKAY
2889 struct statvfs stfs;
2891 check_okay = fstatvfs(fd, &stfs) == 0;
2892 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
2893 # endif /* fstatvfs */
2895 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2896 defined(PERL_MOUNT_NOSUID) && \
2897 defined(HAS_FSTATFS) && \
2898 defined(HAS_STRUCT_STATFS) && \
2899 defined(HAS_STRUCT_STATFS_F_FLAGS)
2900 # define FD_ON_NOSUID_CHECK_OKAY
2903 check_okay = fstatfs(fd, &stfs) == 0;
2904 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
2905 # endif /* fstatfs */
2907 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2908 defined(PERL_MOUNT_NOSUID) && \
2909 defined(HAS_FSTAT) && \
2910 defined(HAS_USTAT) && \
2911 defined(HAS_GETMNT) && \
2912 defined(HAS_STRUCT_FS_DATA) && \
2914 # define FD_ON_NOSUID_CHECK_OKAY
2917 if (fstat(fd, &fdst) == 0) {
2919 if (ustat(fdst.st_dev, &us) == 0) {
2921 /* NOSTAT_ONE here because we're not examining fields which
2922 * vary between that case and STAT_ONE. */
2923 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
2924 size_t cmplen = sizeof(us.f_fname);
2925 if (sizeof(fsd.fd_req.path) < cmplen)
2926 cmplen = sizeof(fsd.fd_req.path);
2927 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2928 fdst.st_dev == fsd.fd_req.dev) {
2930 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2936 # endif /* fstat+ustat+getmnt */
2938 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2939 defined(HAS_GETMNTENT) && \
2940 defined(HAS_HASMNTOPT) && \
2941 defined(MNTOPT_NOSUID)
2942 # define FD_ON_NOSUID_CHECK_OKAY
2943 FILE *mtab = fopen("/etc/mtab", "r");
2944 struct mntent *entry;
2945 struct stat stb, fsb;
2947 if (mtab && (fstat(fd, &stb) == 0)) {
2948 while (entry = getmntent(mtab)) {
2949 if (stat(entry->mnt_dir, &fsb) == 0
2950 && fsb.st_dev == stb.st_dev)
2952 /* found the filesystem */
2954 if (hasmntopt(entry, MNTOPT_NOSUID))
2957 } /* A single fs may well fail its stat(). */
2962 # endif /* getmntent+hasmntopt */
2965 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
2968 #endif /* IAMSUID */
2971 S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
2977 /* do we need to emulate setuid on scripts? */
2979 /* This code is for those BSD systems that have setuid #! scripts disabled
2980 * in the kernel because of a security problem. Merely defining DOSUID
2981 * in perl will not fix that problem, but if you have disabled setuid
2982 * scripts in the kernel, this will attempt to emulate setuid and setgid
2983 * on scripts that have those now-otherwise-useless bits set. The setuid
2984 * root version must be called suidperl or sperlN.NNN. If regular perl
2985 * discovers that it has opened a setuid script, it calls suidperl with
2986 * the same argv that it had. If suidperl finds that the script it has
2987 * just opened is NOT setuid root, it sets the effective uid back to the
2988 * uid. We don't just make perl setuid root because that loses the
2989 * effective uid we had before invoking perl, if it was different from the
2992 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2993 * be defined in suidperl only. suidperl must be setuid root. The
2994 * Configure script will set this up for you if you want it.
3000 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
3001 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
3002 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
3007 #ifndef HAS_SETREUID
3008 /* On this access check to make sure the directories are readable,
3009 * there is actually a small window that the user could use to make
3010 * filename point to an accessible directory. So there is a faint
3011 * chance that someone could execute a setuid script down in a
3012 * non-accessible directory. I don't know what to do about that.
3013 * But I don't think it's too important. The manual lies when
3014 * it says access() is useful in setuid programs.
3016 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
3017 Perl_croak(aTHX_ "Permission denied");
3019 /* If we can swap euid and uid, then we can determine access rights
3020 * with a simple stat of the file, and then compare device and
3021 * inode to make sure we did stat() on the same file we opened.
3022 * Then we just have to make sure he or she can execute it.
3025 struct stat tmpstatbuf;
3029 setreuid(PL_euid,PL_uid) < 0
3032 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
3035 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
3036 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
3037 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
3038 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
3039 #if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
3040 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
3041 Perl_croak(aTHX_ "Permission denied");
3043 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
3044 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
3045 (void)PerlIO_close(PL_rsfp);
3046 Perl_croak(aTHX_ "Permission denied\n");
3050 setreuid(PL_uid,PL_euid) < 0
3052 # if defined(HAS_SETRESUID)
3053 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
3056 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
3057 Perl_croak(aTHX_ "Can't reswap uid and euid");
3058 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
3059 Perl_croak(aTHX_ "Permission denied\n");
3061 #endif /* HAS_SETREUID */
3062 #endif /* IAMSUID */
3064 if (!S_ISREG(PL_statbuf.st_mode))
3065 Perl_croak(aTHX_ "Permission denied");
3066 if (PL_statbuf.st_mode & S_IWOTH)
3067 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
3068 PL_doswitches = FALSE; /* -s is insecure in suid */
3069 CopLINE_inc(PL_curcop);
3070 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
3071 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
3072 Perl_croak(aTHX_ "No #! line");
3073 s = SvPV(PL_linestr,n_a)+2;
3075 while (!isSPACE(*s)) s++;
3076 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
3077 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
3078 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
3079 Perl_croak(aTHX_ "Not a perl script");
3080 while (*s == ' ' || *s == '\t') s++;
3082 * #! arg must be what we saw above. They can invoke it by
3083 * mentioning suidperl explicitly, but they may not add any strange
3084 * arguments beyond what #! says if they do invoke suidperl that way.
3086 len = strlen(validarg);
3087 if (strEQ(validarg," PHOOEY ") ||
3088 strnNE(s,validarg,len) || !isSPACE(s[len]))
3089 Perl_croak(aTHX_ "Args must match #! line");
3092 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
3093 PL_euid == PL_statbuf.st_uid)
3095 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3096 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3097 #endif /* IAMSUID */
3099 if (PL_euid) { /* oops, we're not the setuid root perl */
3100 (void)PerlIO_close(PL_rsfp);
3103 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
3104 (int)PERL_REVISION, (int)PERL_VERSION,
3105 (int)PERL_SUBVERSION), PL_origargv);
3107 Perl_croak(aTHX_ "Can't do setuid\n");
3110 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
3112 (void)setegid(PL_statbuf.st_gid);
3115 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
3117 #ifdef HAS_SETRESGID
3118 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
3120 PerlProc_setgid(PL_statbuf.st_gid);
3124 if (PerlProc_getegid() != PL_statbuf.st_gid)
3125 Perl_croak(aTHX_ "Can't do setegid!\n");
3127 if (PL_statbuf.st_mode & S_ISUID) {
3128 if (PL_statbuf.st_uid != PL_euid)
3130 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
3133 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
3135 #ifdef HAS_SETRESUID
3136 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
3138 PerlProc_setuid(PL_statbuf.st_uid);
3142 if (PerlProc_geteuid() != PL_statbuf.st_uid)
3143 Perl_croak(aTHX_ "Can't do seteuid!\n");
3145 else if (PL_uid) { /* oops, mustn't run as root */
3147 (void)seteuid((Uid_t)PL_uid);
3150 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
3152 #ifdef HAS_SETRESUID
3153 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
3155 PerlProc_setuid((Uid_t)PL_uid);
3159 if (PerlProc_geteuid() != PL_uid)
3160 Perl_croak(aTHX_ "Can't do seteuid!\n");
3163 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
3164 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
3167 else if (PL_preprocess)
3168 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
3169 else if (fdscript >= 0)
3170 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
3172 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
3174 /* We absolutely must clear out any saved ids here, so we */
3175 /* exec the real perl, substituting fd script for scriptname. */
3176 /* (We pass script name as "subdir" of fd, which perl will grok.) */
3177 PerlIO_rewind(PL_rsfp);
3178 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
3179 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3180 if (!PL_origargv[which])
3181 Perl_croak(aTHX_ "Permission denied");
3182 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
3183 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
3184 #if defined(HAS_FCNTL) && defined(F_SETFD)
3185 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
3187 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
3188 (int)PERL_REVISION, (int)PERL_VERSION,
3189 (int)PERL_SUBVERSION), PL_origargv);/* try again */
3190 Perl_croak(aTHX_ "Can't do setuid\n");
3191 #endif /* IAMSUID */
3193 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
3194 #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
3195 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3196 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3198 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3201 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3202 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3203 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3204 /* not set-id, must be wrapped */
3210 S_find_beginning(pTHX)
3212 register char *s, *s2;
3214 /* skip forward in input to the real script? */
3217 #ifdef MACOS_TRADITIONAL
3218 /* Since the Mac OS does not honor #! arguments for us, we do it ourselves */
3220 while (PL_doextract || gMacPerl_AlwaysExtract) {
3221 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3222 if (!gMacPerl_AlwaysExtract)
3223 Perl_croak(aTHX_ "No Perl script found in input\n");
3225 if (PL_doextract) /* require explicit override ? */
3226 if (!OverrideExtract(PL_origfilename))
3227 Perl_croak(aTHX_ "User aborted script\n");
3229 PL_doextract = FALSE;
3231 /* Pater peccavi, file does not have #! */
3232 PerlIO_rewind(PL_rsfp);
3237 while (PL_doextract) {
3238 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
3239 Perl_croak(aTHX_ "No Perl script found in input\n");
3242 if (*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))) {
3243 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3244 PL_doextract = FALSE;
3245 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3247 while (*s == ' ' || *s == '\t') s++;
3249 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3250 if (strnEQ(s2-4,"perl",4))
3252 while ((s = moreswitches(s)))
3255 #ifdef MACOS_TRADITIONAL
3266 PL_uid = PerlProc_getuid();
3267 PL_euid = PerlProc_geteuid();
3268 PL_gid = PerlProc_getgid();
3269 PL_egid = PerlProc_getegid();
3271 PL_uid |= PL_gid << 16;
3272 PL_euid |= PL_egid << 16;
3274 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3278 S_forbid_setid(pTHX_ char *s)
3280 if (PL_euid != PL_uid)
3281 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3282 if (PL_egid != PL_gid)
3283 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
3287 Perl_init_debugger(pTHX)
3289 HV *ostash = PL_curstash;
3291 PL_curstash = PL_debstash;
3292 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3293 AvREAL_off(PL_dbargs);
3294 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3295 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3296 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
3297 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3298 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
3299 sv_setiv(PL_DBsingle, 0);
3300 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
3301 sv_setiv(PL_DBtrace, 0);
3302 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
3303 sv_setiv(PL_DBsignal, 0);
3304 PL_curstash = ostash;
3307 #ifndef STRESS_REALLOC
3308 #define REASONABLE(size) (size)
3310 #define REASONABLE(size) (1) /* unreasonable */
3314 Perl_init_stacks(pTHX)
3316 /* start with 128-item stack and 8K cxstack */
3317 PL_curstackinfo = new_stackinfo(REASONABLE(128),
3318 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3319 PL_curstackinfo->si_type = PERLSI_MAIN;
3320 PL_curstack = PL_curstackinfo->si_stack;
3321 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
3323 PL_stack_base = AvARRAY(PL_curstack);
3324 PL_stack_sp = PL_stack_base;
3325 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
3327 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3330 PL_tmps_max = REASONABLE(128);
3332 New(54,PL_markstack,REASONABLE(32),I32);
3333 PL_markstack_ptr = PL_markstack;
3334 PL_markstack_max = PL_markstack + REASONABLE(32);
3338 New(54,PL_scopestack,REASONABLE(32),I32);
3339 PL_scopestack_ix = 0;
3340 PL_scopestack_max = REASONABLE(32);
3342 New(54,PL_savestack,REASONABLE(128),ANY);
3343 PL_savestack_ix = 0;
3344 PL_savestack_max = REASONABLE(128);
3346 New(54,PL_retstack,REASONABLE(16),OP*);
3348 PL_retstack_max = REASONABLE(16);
3356 while (PL_curstackinfo->si_next)
3357 PL_curstackinfo = PL_curstackinfo->si_next;
3358 while (PL_curstackinfo) {
3359 PERL_SI *p = PL_curstackinfo->si_prev;
3360 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3361 Safefree(PL_curstackinfo->si_cxstack);
3362 Safefree(PL_curstackinfo);
3363 PL_curstackinfo = p;
3365 Safefree(PL_tmps_stack);
3366 Safefree(PL_markstack);
3367 Safefree(PL_scopestack);
3368 Safefree(PL_savestack);
3369 Safefree(PL_retstack);
3378 lex_start(PL_linestr);
3380 PL_subname = newSVpvn("main",4);
3384 S_init_predump_symbols(pTHX)
3389 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3390 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3391 GvMULTI_on(PL_stdingv);
3392 io = GvIOp(PL_stdingv);
3393 IoTYPE(io) = IoTYPE_RDONLY;
3394 IoIFP(io) = PerlIO_stdin();
3395 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
3397 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3399 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
3402 IoTYPE(io) = IoTYPE_WRONLY;
3403 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
3405 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
3407 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3409 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3410 GvMULTI_on(PL_stderrgv);
3411 io = GvIOp(PL_stderrgv);
3412 IoTYPE(io) = IoTYPE_WRONLY;
3413 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
3414 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
3416 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3418 PL_statname = NEWSV(66,0); /* last filename we did stat on */
3421 Safefree(PL_osname);
3422 PL_osname = savepv(OSNAME);
3426 Perl_init_argv_symbols(pTHX_ register int argc, register char **argv)
3429 argc--,argv++; /* skip name of script */
3430 if (PL_doswitches) {
3431 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3434 if (argv[0][1] == '-' && !argv[0][2]) {
3438 if ((s = strchr(argv[0], '='))) {
3440 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
3443 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
3446 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3447 GvMULTI_on(PL_argvgv);
3448 (void)gv_AVadd(PL_argvgv);
3449 av_clear(GvAVn(PL_argvgv));
3450 for (; argc > 0; argc--,argv++) {
3451 SV *sv = newSVpv(argv[0],0);
3452 av_push(GvAVn(PL_argvgv),sv);
3453 if (PL_widesyscalls)
3454 (void)sv_utf8_decode(sv);
3459 #ifdef HAS_PROCSELFEXE
3460 /* This is a function so that we don't hold on to MAXPATHLEN
3461 bytes of stack longer than necessary
3464 S_procself_val(pTHX_ SV *sv, char *arg0)
3466 char buf[MAXPATHLEN];
3467 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
3468 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
3469 returning the text "unknown" from the readlink rather than the path
3470 to the executable (or returning an error from the readlink). Any valid
3471 path has a '/' in it somewhere, so use that to validate the result.
3472 See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
3474 if (len > 0 && memchr(buf, '/', len)) {
3475 sv_setpvn(sv,buf,len);
3481 #endif /* HAS_PROCSELFEXE */
3484 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
3490 PL_toptarget = NEWSV(0,0);
3491 sv_upgrade(PL_toptarget, SVt_PVFM);
3492 sv_setpvn(PL_toptarget, "", 0);
3493 PL_bodytarget = NEWSV(0,0);
3494 sv_upgrade(PL_bodytarget, SVt_PVFM);
3495 sv_setpvn(PL_bodytarget, "", 0);
3496 PL_formtarget = PL_bodytarget;
3500 init_argv_symbols(argc,argv);
3502 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
3503 #ifdef MACOS_TRADITIONAL
3504 /* $0 is not majick on a Mac */
3505 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3507 sv_setpv(GvSV(tmpgv),PL_origfilename);
3508 magicname("0", "0", 1);
3511 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV))) {/* $^X */
3512 #ifdef HAS_PROCSELFEXE
3513 S_procself_val(aTHX_ GvSV(tmpgv), PL_origargv[0]);
3516 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
3518 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
3522 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
3524 GvMULTI_on(PL_envgv);
3525 hv = GvHVn(PL_envgv);
3526 hv_magic(hv, Nullgv, PERL_MAGIC_env);
3527 #ifdef USE_ENVIRON_ARRAY
3528 /* Note that if the supplied env parameter is actually a copy
3529 of the global environ then it may now point to free'd memory
3530 if the environment has been modified since. To avoid this
3531 problem we treat env==NULL as meaning 'use the default'
3536 environ[0] = Nullch;
3538 for (; *env; env++) {
3539 if (!(s = strchr(*env,'=')))
3546 sv = newSVpv(s+1, 0);
3547 (void)hv_store(hv, *env, s - *env, sv, 0);
3551 #endif /* USE_ENVIRON_ARRAY */
3554 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV))) {
3555 SvREADONLY_off(GvSV(tmpgv));
3556 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
3557 SvREADONLY_on(GvSV(tmpgv));
3562 S_init_perllib(pTHX)
3567 s = PerlEnv_getenv("PERL5LIB");
3569 incpush(s, TRUE, TRUE);
3571 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE);
3573 /* Treat PERL5?LIB as a possible search list logical name -- the
3574 * "natural" VMS idiom for a Unix path string. We allow each
3575 * element to be a set of |-separated directories for compatibility.
3579 if (my_trnlnm("PERL5LIB",buf,0))
3580 do { incpush(buf,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
3582 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE);
3586 /* Use the ~-expanded versions of APPLLIB (undocumented),
3587 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
3590 incpush(APPLLIB_EXP, TRUE, TRUE);
3594 incpush(ARCHLIB_EXP, FALSE, FALSE);
3596 #ifdef MACOS_TRADITIONAL
3598 struct stat tmpstatbuf;
3599 SV * privdir = NEWSV(55, 0);
3600 char * macperl = PerlEnv_getenv("MACPERL");
3605 Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl);
3606 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3607 incpush(SvPVX(privdir), TRUE, FALSE);
3608 Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl);
3609 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3610 incpush(SvPVX(privdir), TRUE, FALSE);
3612 SvREFCNT_dec(privdir);
3615 incpush(":", FALSE, FALSE);
3618 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
3621 incpush(PRIVLIB_EXP, TRUE, FALSE);
3623 incpush(PRIVLIB_EXP, FALSE, FALSE);
3627 /* sitearch is always relative to sitelib on Windows for
3628 * DLL-based path intuition to work correctly */
3629 # if !defined(WIN32)
3630 incpush(SITEARCH_EXP, FALSE, FALSE);
3636 incpush(SITELIB_EXP, TRUE, FALSE); /* this picks up sitearch as well */
3638 incpush(SITELIB_EXP, FALSE, FALSE);
3642 #ifdef SITELIB_STEM /* Search for version-specific dirs below here */
3643 incpush(SITELIB_STEM, FALSE, TRUE);
3646 #ifdef PERL_VENDORARCH_EXP
3647 /* vendorarch is always relative to vendorlib on Windows for
3648 * DLL-based path intuition to work correctly */
3649 # if !defined(WIN32)
3650 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE);
3654 #ifdef PERL_VENDORLIB_EXP
3656 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE); /* this picks up vendorarch as well */
3658 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE);
3662 #ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
3663 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE);
3666 #ifdef PERL_OTHERLIBDIRS
3667 incpush(PERL_OTHERLIBDIRS, TRUE, TRUE);
3671 incpush(".", FALSE, FALSE);
3672 #endif /* MACOS_TRADITIONAL */
3675 #if defined(DOSISH) || defined(EPOC)
3676 # define PERLLIB_SEP ';'
3679 # define PERLLIB_SEP '|'
3681 # if defined(MACOS_TRADITIONAL)
3682 # define PERLLIB_SEP ','
3684 # define PERLLIB_SEP ':'
3688 #ifndef PERLLIB_MANGLE
3689 # define PERLLIB_MANGLE(s,n) (s)
3693 S_incpush(pTHX_ char *p, int addsubdirs, int addoldvers)
3695 SV *subdir = Nullsv;
3700 if (addsubdirs || addoldvers) {
3701 subdir = sv_newmortal();
3704 /* Break at all separators */
3706 SV *libdir = NEWSV(55,0);
3709 /* skip any consecutive separators */
3710 while ( *p == PERLLIB_SEP ) {
3711 /* Uncomment the next line for PATH semantics */
3712 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
3716 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
3717 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
3722 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
3723 p = Nullch; /* break out */
3725 #ifdef MACOS_TRADITIONAL
3726 if (!strchr(SvPVX(libdir), ':'))
3727 sv_insert(libdir, 0, 0, ":", 1);
3728 if (SvPVX(libdir)[SvCUR(libdir)-1] != ':')
3729 sv_catpv(libdir, ":");
3733 * BEFORE pushing libdir onto @INC we may first push version- and
3734 * archname-specific sub-directories.
3736 if (addsubdirs || addoldvers) {
3737 #ifdef PERL_INC_VERSION_LIST
3738 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
3739 const char *incverlist[] = { PERL_INC_VERSION_LIST };
3740 const char **incver;
3742 struct stat tmpstatbuf;
3747 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
3749 while (unix[len-1] == '/') len--; /* Cosmetic */
3750 sv_usepvn(libdir,unix,len);
3753 PerlIO_printf(Perl_error_log,
3754 "Failed to unixify @INC element \"%s\"\n",
3758 #ifdef MACOS_TRADITIONAL
3759 #define PERL_AV_SUFFIX_FMT ""
3760 #define PERL_ARCH_FMT "%s:"
3761 #define PERL_ARCH_FMT_PATH PERL_FS_VER_FMT PERL_AV_SUFFIX_FMT
3763 #define PERL_AV_SUFFIX_FMT "/"
3764 #define PERL_ARCH_FMT "/%s"
3765 #define PERL_ARCH_FMT_PATH PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT
3767 /* .../version/archname if -d .../version/archname */
3768 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH PERL_ARCH_FMT,
3770 (int)PERL_REVISION, (int)PERL_VERSION,
3771 (int)PERL_SUBVERSION, ARCHNAME);
3772 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3773 S_ISDIR(tmpstatbuf.st_mode))
3774 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3776 /* .../version if -d .../version */
3777 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH, libdir,
3778 (int)PERL_REVISION, (int)PERL_VERSION,
3779 (int)PERL_SUBVERSION);
3780 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3781 S_ISDIR(tmpstatbuf.st_mode))
3782 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3784 /* .../archname if -d .../archname */
3785 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, ARCHNAME);
3786 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3787 S_ISDIR(tmpstatbuf.st_mode))
3788 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3791 #ifdef PERL_INC_VERSION_LIST
3793 for (incver = incverlist; *incver; incver++) {
3794 /* .../xxx if -d .../xxx */
3795 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, *incver);
3796 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3797 S_ISDIR(tmpstatbuf.st_mode))
3798 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3804 /* finally push this lib directory on the end of @INC */
3805 av_push(GvAVn(PL_incgv), libdir);
3809 #ifdef USE_5005THREADS
3810 STATIC struct perl_thread *
3811 S_init_main_thread(pTHX)
3813 #if !defined(PERL_IMPLICIT_CONTEXT)
3814 struct perl_thread *thr;
3818 Newz(53, thr, 1, struct perl_thread);
3819 PL_curcop = &PL_compiling;
3820 thr->interp = PERL_GET_INTERP;
3821 thr->cvcache = newHV();
3822 thr->threadsv = newAV();
3823 /* thr->threadsvp is set when find_threadsv is called */
3824 thr->specific = newAV();
3825 thr->flags = THRf_R_JOINABLE;
3826 MUTEX_INIT(&thr->mutex);
3827 /* Handcraft thrsv similarly to mess_sv */
3828 New(53, PL_thrsv, 1, SV);
3829 Newz(53, xpv, 1, XPV);
3830 SvFLAGS(PL_thrsv) = SVt_PV;
3831 SvANY(PL_thrsv) = (void*)xpv;
3832 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
3833 SvPVX(PL_thrsv) = (char*)thr;
3834 SvCUR_set(PL_thrsv, sizeof(thr));
3835 SvLEN_set(PL_thrsv, sizeof(thr));
3836 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
3837 thr->oursv = PL_thrsv;
3838 PL_chopset = " \n-";
3841 MUTEX_LOCK(&PL_threads_mutex);
3847 MUTEX_UNLOCK(&PL_threads_mutex);
3849 #ifdef HAVE_THREAD_INTERN
3850 Perl_init_thread_intern(thr);
3853 #ifdef SET_THREAD_SELF
3854 SET_THREAD_SELF(thr);
3856 thr->self = pthread_self();
3857 #endif /* SET_THREAD_SELF */
3861 * These must come after the thread self setting
3862 * because sv_setpvn does SvTAINT and the taint
3863 * fields thread selfness being set.
3865 PL_toptarget = NEWSV(0,0);
3866 sv_upgrade(PL_toptarget, SVt_PVFM);
3867 sv_setpvn(PL_toptarget, "", 0);
3868 PL_bodytarget = NEWSV(0,0);
3869 sv_upgrade(PL_bodytarget, SVt_PVFM);
3870 sv_setpvn(PL_bodytarget, "", 0);
3871 PL_formtarget = PL_bodytarget;
3872 thr->errsv = newSVpvn("", 0);
3873 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
3876 PL_peepp = MEMBER_TO_FPTR(Perl_peep);
3877 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3878 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3879 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3880 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3881 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
3883 PL_reginterp_cnt = 0;
3887 #endif /* USE_5005THREADS */
3890 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
3893 line_t oldline = CopLINE(PL_curcop);
3899 while (AvFILL(paramList) >= 0) {
3900 cv = (CV*)av_shift(paramList);
3901 if (PL_savebegin && (paramList == PL_beginav)) {
3902 /* save PL_beginav for compiler */
3903 if (! PL_beginav_save)
3904 PL_beginav_save = newAV();
3905 av_push(PL_beginav_save, (SV*)cv);
3909 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3910 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_list_body), cv);
3916 #ifndef PERL_FLEXIBLE_EXCEPTIONS
3920 (void)SvPV(atsv, len);
3923 PL_curcop = &PL_compiling;
3924 CopLINE_set(PL_curcop, oldline);
3925 if (paramList == PL_beginav)
3926 sv_catpv(atsv, "BEGIN failed--compilation aborted");
3928 Perl_sv_catpvf(aTHX_ atsv,
3929 "%s failed--call queue aborted",
3930 paramList == PL_checkav ? "CHECK"
3931 : paramList == PL_initav ? "INIT"
3933 while (PL_scopestack_ix > oldscope)
3936 Perl_croak(aTHX_ "%s", SvPVx(atsv, n_a));
3943 /* my_exit() was called */
3944 while (PL_scopestack_ix > oldscope)
3947 PL_curstash = PL_defstash;
3948 PL_curcop = &PL_compiling;
3949 CopLINE_set(PL_curcop, oldline);
3951 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
3952 if (paramList == PL_beginav)
3953 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
3955 Perl_croak(aTHX_ "%s failed--call queue aborted",
3956 paramList == PL_checkav ? "CHECK"
3957 : paramList == PL_initav ? "INIT"
3964 PL_curcop = &PL_compiling;
3965 CopLINE_set(PL_curcop, oldline);
3968 PerlIO_printf(Perl_error_log, "panic: restartop\n");
3976 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3978 S_vcall_list_body(pTHX_ va_list args)
3980 CV *cv = va_arg(args, CV*);
3981 return call_list_body(cv);
3986 S_call_list_body(pTHX_ CV *cv)
3988 PUSHMARK(PL_stack_sp);
3989 call_sv((SV*)cv, G_EVAL|G_DISCARD);
3994 Perl_my_exit(pTHX_ U32 status)
3996 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
3997 thr, (unsigned long) status));
4006 STATUS_NATIVE_SET(status);
4013 Perl_my_failure_exit(pTHX)
4016 if (vaxc$errno & 1) {
4017 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
4018 STATUS_NATIVE_SET(44);
4021 if (!vaxc$errno && errno) /* unlikely */
4022 STATUS_NATIVE_SET(44);
4024 STATUS_NATIVE_SET(vaxc$errno);
4029 STATUS_POSIX_SET(errno);
4031 exitstatus = STATUS_POSIX >> 8;
4032 if (exitstatus & 255)
4033 STATUS_POSIX_SET(exitstatus);
4035 STATUS_POSIX_SET(255);
4042 S_my_exit_jump(pTHX)
4044 register PERL_CONTEXT *cx;
4049 SvREFCNT_dec(PL_e_script);
4050 PL_e_script = Nullsv;
4053 POPSTACK_TO(PL_mainstack);
4054 if (cxstack_ix >= 0) {
4057 POPBLOCK(cx,PL_curpm);
4065 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen)
4068 p = SvPVX(PL_e_script);
4069 nl = strchr(p, '\n');
4070 nl = (nl) ? nl+1 : SvEND(PL_e_script);
4072 filter_del(read_e_script);
4075 sv_catpvn(buf_sv, p, nl-p);
4076 sv_chop(PL_e_script, nl);