3 * Copyright (c) 1987-2001 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 =for apidoc perl_alloc
107 Allocates a new Perl interpreter. See L<perlembed>.
115 PerlInterpreter *my_perl;
117 /* New() needs interpreter, so call malloc() instead */
118 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
121 Zero(my_perl, 1, PerlInterpreter);
124 #endif /* PERL_IMPLICIT_SYS */
127 =for apidoc perl_construct
129 Initializes a new Perl interpreter. See L<perlembed>.
135 perl_construct(pTHXx)
137 #ifdef USE_5005THREADS
139 struct perl_thread *thr = NULL;
140 #endif /* FAKE_THREADS */
141 #endif /* USE_5005THREADS */
145 PL_perl_destruct_level = 1;
147 if (PL_perl_destruct_level > 0)
151 /* Init the real globals (and main thread)? */
153 #ifdef USE_5005THREADS
154 MUTEX_INIT(&PL_sv_mutex);
156 * Safe to use basic SV functions from now on (though
157 * not things like mortals or tainting yet).
159 MUTEX_INIT(&PL_eval_mutex);
160 COND_INIT(&PL_eval_cond);
161 MUTEX_INIT(&PL_threads_mutex);
162 COND_INIT(&PL_nthreads_cond);
163 # ifdef EMULATE_ATOMIC_REFCOUNTS
164 MUTEX_INIT(&PL_svref_mutex);
165 # endif /* EMULATE_ATOMIC_REFCOUNTS */
167 MUTEX_INIT(&PL_cred_mutex);
168 MUTEX_INIT(&PL_sv_lock_mutex);
169 MUTEX_INIT(&PL_fdpid_mutex);
171 thr = init_main_thread();
172 #endif /* USE_5005THREADS */
174 #ifdef PERL_FLEXIBLE_EXCEPTIONS
175 PL_protect = MEMBER_TO_FPTR(Perl_default_protect); /* for exceptions */
178 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
180 PL_linestr = NEWSV(65,79);
181 sv_upgrade(PL_linestr,SVt_PVIV);
183 if (!SvREADONLY(&PL_sv_undef)) {
184 /* set read-only and try to insure than we wont see REFCNT==0
187 SvREADONLY_on(&PL_sv_undef);
188 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
190 sv_setpv(&PL_sv_no,PL_No);
192 SvREADONLY_on(&PL_sv_no);
193 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
195 sv_setpv(&PL_sv_yes,PL_Yes);
197 SvREADONLY_on(&PL_sv_yes);
198 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
201 PL_sighandlerp = Perl_sighandler;
202 PL_pidstatus = newHV();
206 * There is no way we can refer to them from Perl so close them to save
207 * space. The other alternative would be to provide STDAUX and STDPRN
210 (void)PerlIO_close(PerlIO_importFILE(stdaux, 0));
211 (void)PerlIO_close(PerlIO_importFILE(stdprn, 0));
215 PL_rs = newSVpvn("\n", 1);
220 PL_lex_state = LEX_NOTPARSING;
226 SET_NUMERIC_STANDARD();
230 PL_patchlevel = NEWSV(0,4);
231 (void)SvUPGRADE(PL_patchlevel, SVt_PVNV);
232 if (PERL_REVISION > 127 || PERL_VERSION > 127 || PERL_SUBVERSION > 127)
233 SvGROW(PL_patchlevel, UTF8_MAXLEN*3+1);
234 s = (U8*)SvPVX(PL_patchlevel);
235 /* Build version strings using "native" characters */
236 s = uvchr_to_utf8(s, (UV)PERL_REVISION);
237 s = uvchr_to_utf8(s, (UV)PERL_VERSION);
238 s = uvchr_to_utf8(s, (UV)PERL_SUBVERSION);
240 SvCUR_set(PL_patchlevel, s - (U8*)SvPVX(PL_patchlevel));
241 SvPOK_on(PL_patchlevel);
242 SvNVX(PL_patchlevel) = (NV)PERL_REVISION
243 + ((NV)PERL_VERSION / (NV)1000)
244 #if defined(PERL_SUBVERSION) && PERL_SUBVERSION > 0
245 + ((NV)PERL_SUBVERSION / (NV)1000000)
248 SvNOK_on(PL_patchlevel); /* dual valued */
249 SvUTF8_on(PL_patchlevel);
250 SvREADONLY_on(PL_patchlevel);
253 #if defined(LOCAL_PATCH_COUNT)
254 PL_localpatches = local_patches; /* For possible -v */
257 #ifdef HAVE_INTERP_INTERN
261 PerlIO_init(aTHX); /* Hook to IO system */
263 PL_fdpid = newAV(); /* for remembering popen pids by fd */
264 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
265 PL_errors = newSVpvn("",0);
267 PL_regex_padav = newAV();
268 av_push(PL_regex_padav,(SV*)newAV()); /* First entry is an array of empty elements */
269 PL_regex_pad = AvARRAY(PL_regex_padav);
271 #ifdef USE_REENTRANT_API
272 New(31337, PL_reentrant_buffer,1, REBUF);
273 New(31337, PL_reentrant_buffer->tmbuff,1, struct tm);
277 sv_setpvn(PERL_DEBUG_PAD(0), "", 0);
278 sv_setpvn(PERL_DEBUG_PAD(1), "", 0);
279 sv_setpvn(PERL_DEBUG_PAD(2), "", 0);
282 /* Note that strtab is a rather special HV. Assumptions are made
283 about not iterating on it, and not adding tie magic to it.
284 It is properly deallocated in perl_destruct() */
287 #ifdef USE_5005THREADS
288 MUTEX_INIT(&PL_strtab_mutex);
290 HvSHAREKEYS_off(PL_strtab); /* mandatory */
291 hv_ksplit(PL_strtab, 512);
293 #if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
294 _dyld_lookup_and_bind
295 ("__environ", (unsigned long *) &environ_pointer, NULL);
298 #ifdef USE_ENVIRON_ARRAY
299 PL_origenviron = environ;
306 =for apidoc perl_destruct
308 Shuts down a Perl interpreter. See L<perlembed>.
316 volatile int destruct_level; /* 0=none, 1=full, 2=full with checks */
318 #ifdef USE_5005THREADS
321 #endif /* USE_5005THREADS */
323 /* wait for all pseudo-forked children to finish */
324 PERL_WAIT_FOR_CHILDREN;
326 #ifdef USE_5005THREADS
328 /* Pass 1 on any remaining threads: detach joinables, join zombies */
330 MUTEX_LOCK(&PL_threads_mutex);
331 DEBUG_S(PerlIO_printf(Perl_debug_log,
332 "perl_destruct: waiting for %d threads...\n",
334 for (t = thr->next; t != thr; t = t->next) {
335 MUTEX_LOCK(&t->mutex);
336 switch (ThrSTATE(t)) {
339 DEBUG_S(PerlIO_printf(Perl_debug_log,
340 "perl_destruct: joining zombie %p\n", t));
341 ThrSETSTATE(t, THRf_DEAD);
342 MUTEX_UNLOCK(&t->mutex);
345 * The SvREFCNT_dec below may take a long time (e.g. av
346 * may contain an object scalar whose destructor gets
347 * called) so we have to unlock threads_mutex and start
350 MUTEX_UNLOCK(&PL_threads_mutex);
352 SvREFCNT_dec((SV*)av);
353 DEBUG_S(PerlIO_printf(Perl_debug_log,
354 "perl_destruct: joined zombie %p OK\n", t));
356 case THRf_R_JOINABLE:
357 DEBUG_S(PerlIO_printf(Perl_debug_log,
358 "perl_destruct: detaching thread %p\n", t));
359 ThrSETSTATE(t, THRf_R_DETACHED);
361 * We unlock threads_mutex and t->mutex in the opposite order
362 * from which we locked them just so that DETACH won't
363 * deadlock if it panics. It's only a breach of good style
364 * not a bug since they are unlocks not locks.
366 MUTEX_UNLOCK(&PL_threads_mutex);
368 MUTEX_UNLOCK(&t->mutex);
371 DEBUG_S(PerlIO_printf(Perl_debug_log,
372 "perl_destruct: ignoring %p (state %u)\n",
374 MUTEX_UNLOCK(&t->mutex);
375 /* fall through and out */
378 /* We leave the above "Pass 1" loop with threads_mutex still locked */
380 /* Pass 2 on remaining threads: wait for the thread count to drop to one */
381 while (PL_nthreads > 1)
383 DEBUG_S(PerlIO_printf(Perl_debug_log,
384 "perl_destruct: final wait for %d threads\n",
386 COND_WAIT(&PL_nthreads_cond, &PL_threads_mutex);
388 /* At this point, we're the last thread */
389 MUTEX_UNLOCK(&PL_threads_mutex);
390 DEBUG_S(PerlIO_printf(Perl_debug_log, "perl_destruct: armageddon has arrived\n"));
391 MUTEX_DESTROY(&PL_threads_mutex);
392 COND_DESTROY(&PL_nthreads_cond);
394 #endif /* !defined(FAKE_THREADS) */
395 #endif /* USE_5005THREADS */
397 destruct_level = PL_perl_destruct_level;
401 if ((s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL"))) {
403 if (destruct_level < i)
410 if(PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
415 if (PL_endav && !PL_minus_c)
416 call_list(PL_scopestack_ix, PL_endav);
422 /* We must account for everything. */
424 /* Destroy the main CV and syntax tree */
426 PL_curpad = AvARRAY(PL_comppad);
427 op_free(PL_main_root);
428 PL_main_root = Nullop;
430 PL_curcop = &PL_compiling;
431 PL_main_start = Nullop;
432 SvREFCNT_dec(PL_main_cv);
436 /* Tell PerlIO we are about to tear things apart in case
437 we have layers which are using resources that should
441 PerlIO_destruct(aTHX);
443 if (PL_sv_objcount) {
445 * Try to destruct global references. We do this first so that the
446 * destructors and destructees still exist. Some sv's might remain.
447 * Non-referenced objects are on their own.
452 /* unhook hooks which will soon be, or use, destroyed data */
453 SvREFCNT_dec(PL_warnhook);
454 PL_warnhook = Nullsv;
455 SvREFCNT_dec(PL_diehook);
458 /* call exit list functions */
459 while (PL_exitlistlen-- > 0)
460 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
462 Safefree(PL_exitlist);
464 if (destruct_level == 0){
466 DEBUG_P(debprofdump());
468 #if defined(PERLIO_LAYERS)
469 /* No more IO - including error messages ! */
470 PerlIO_cleanup(aTHX);
473 /* The exit() function will do everything that needs doing. */
474 return STATUS_NATIVE_EXPORT;;
477 /* jettison our possibly duplicated environment */
478 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
479 * so we certainly shouldn't free it here
481 #if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
482 if (environ != PL_origenviron) {
485 for (i = 0; environ[i]; i++)
486 safesysfree(environ[i]);
488 /* Must use safesysfree() when working with environ. */
489 safesysfree(environ);
491 environ = PL_origenviron;
496 /* the syntax tree is shared between clones
497 * so op_free(PL_main_root) only ReREFCNT_dec's
498 * REGEXPs in the parent interpreter
499 * we need to manually ReREFCNT_dec for the clones
502 I32 i = AvFILLp(PL_regex_padav) + 1;
503 SV **ary = AvARRAY(PL_regex_padav);
507 REGEXP *re = INT2PTR(REGEXP *,SvIVX(resv));
509 if (SvFLAGS(resv) & SVf_BREAK) {
510 /* this is PL_reg_curpm, already freed
511 * flag is set in regexec.c:S_regtry
513 SvFLAGS(resv) &= ~SVf_BREAK;
515 else if(SvREPADTMP(resv)) {
516 SvREPADTMP_off(resv);
523 SvREFCNT_dec(PL_regex_padav);
524 PL_regex_padav = Nullav;
528 /* loosen bonds of global variables */
531 (void)PerlIO_close(PL_rsfp);
535 /* Filters for program text */
536 SvREFCNT_dec(PL_rsfp_filters);
537 PL_rsfp_filters = Nullav;
540 PL_preprocess = FALSE;
546 PL_doswitches = FALSE;
547 PL_dowarn = G_WARN_OFF;
548 PL_doextract = FALSE;
549 PL_sawampersand = FALSE; /* must save all match strings */
552 Safefree(PL_inplace);
554 SvREFCNT_dec(PL_patchlevel);
557 SvREFCNT_dec(PL_e_script);
558 PL_e_script = Nullsv;
561 while (--PL_origargc >= 0) {
562 Safefree(PL_origargv[PL_origargc]);
564 Safefree(PL_origargv);
566 /* magical thingies */
568 SvREFCNT_dec(PL_ofs_sv); /* $, */
571 SvREFCNT_dec(PL_ors_sv); /* $\ */
574 SvREFCNT_dec(PL_rs); /* $/ */
577 PL_multiline = 0; /* $* */
578 Safefree(PL_osname); /* $^O */
581 SvREFCNT_dec(PL_statname);
582 PL_statname = Nullsv;
585 /* defgv, aka *_ should be taken care of elsewhere */
587 /* clean up after study() */
588 SvREFCNT_dec(PL_lastscream);
589 PL_lastscream = Nullsv;
590 Safefree(PL_screamfirst);
592 Safefree(PL_screamnext);
596 Safefree(PL_efloatbuf);
597 PL_efloatbuf = Nullch;
600 /* startup and shutdown function lists */
601 SvREFCNT_dec(PL_beginav);
602 SvREFCNT_dec(PL_beginav_save);
603 SvREFCNT_dec(PL_endav);
604 SvREFCNT_dec(PL_checkav);
605 SvREFCNT_dec(PL_initav);
607 PL_beginav_save = Nullav;
612 /* shortcuts just get cleared */
618 PL_argvoutgv = Nullgv;
620 PL_stderrgv = Nullgv;
621 PL_last_in_gv = Nullgv;
623 PL_debstash = Nullhv;
625 /* reset so print() ends up where we expect */
628 SvREFCNT_dec(PL_argvout_stack);
629 PL_argvout_stack = Nullav;
631 SvREFCNT_dec(PL_modglobal);
632 PL_modglobal = Nullhv;
633 SvREFCNT_dec(PL_preambleav);
634 PL_preambleav = Nullav;
635 SvREFCNT_dec(PL_subname);
637 SvREFCNT_dec(PL_linestr);
639 SvREFCNT_dec(PL_pidstatus);
640 PL_pidstatus = Nullhv;
641 SvREFCNT_dec(PL_toptarget);
642 PL_toptarget = Nullsv;
643 SvREFCNT_dec(PL_bodytarget);
644 PL_bodytarget = Nullsv;
645 PL_formtarget = Nullsv;
647 /* free locale stuff */
648 #ifdef USE_LOCALE_COLLATE
649 Safefree(PL_collation_name);
650 PL_collation_name = Nullch;
653 #ifdef USE_LOCALE_NUMERIC
654 Safefree(PL_numeric_name);
655 PL_numeric_name = Nullch;
656 SvREFCNT_dec(PL_numeric_radix_sv);
659 /* clear utf8 character classes */
660 SvREFCNT_dec(PL_utf8_alnum);
661 SvREFCNT_dec(PL_utf8_alnumc);
662 SvREFCNT_dec(PL_utf8_ascii);
663 SvREFCNT_dec(PL_utf8_alpha);
664 SvREFCNT_dec(PL_utf8_space);
665 SvREFCNT_dec(PL_utf8_cntrl);
666 SvREFCNT_dec(PL_utf8_graph);
667 SvREFCNT_dec(PL_utf8_digit);
668 SvREFCNT_dec(PL_utf8_upper);
669 SvREFCNT_dec(PL_utf8_lower);
670 SvREFCNT_dec(PL_utf8_print);
671 SvREFCNT_dec(PL_utf8_punct);
672 SvREFCNT_dec(PL_utf8_xdigit);
673 SvREFCNT_dec(PL_utf8_mark);
674 SvREFCNT_dec(PL_utf8_toupper);
675 SvREFCNT_dec(PL_utf8_totitle);
676 SvREFCNT_dec(PL_utf8_tolower);
677 SvREFCNT_dec(PL_utf8_tofold);
678 PL_utf8_alnum = Nullsv;
679 PL_utf8_alnumc = Nullsv;
680 PL_utf8_ascii = Nullsv;
681 PL_utf8_alpha = Nullsv;
682 PL_utf8_space = Nullsv;
683 PL_utf8_cntrl = Nullsv;
684 PL_utf8_graph = Nullsv;
685 PL_utf8_digit = Nullsv;
686 PL_utf8_upper = Nullsv;
687 PL_utf8_lower = Nullsv;
688 PL_utf8_print = Nullsv;
689 PL_utf8_punct = Nullsv;
690 PL_utf8_xdigit = Nullsv;
691 PL_utf8_mark = Nullsv;
692 PL_utf8_toupper = Nullsv;
693 PL_utf8_totitle = Nullsv;
694 PL_utf8_tolower = Nullsv;
695 PL_utf8_tofold = Nullsv;
697 if (!specialWARN(PL_compiling.cop_warnings))
698 SvREFCNT_dec(PL_compiling.cop_warnings);
699 PL_compiling.cop_warnings = Nullsv;
700 if (!specialCopIO(PL_compiling.cop_io))
701 SvREFCNT_dec(PL_compiling.cop_io);
702 PL_compiling.cop_io = Nullsv;
704 Safefree(CopFILE(&PL_compiling));
705 CopFILE(&PL_compiling) = Nullch;
706 Safefree(CopSTASHPV(&PL_compiling));
708 SvREFCNT_dec(CopFILEGV(&PL_compiling));
709 CopFILEGV(&PL_compiling) = Nullgv;
710 /* cop_stash is not refcounted */
713 /* Prepare to destruct main symbol table. */
718 SvREFCNT_dec(PL_curstname);
719 PL_curstname = Nullsv;
721 /* clear queued errors */
722 SvREFCNT_dec(PL_errors);
726 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
727 if (PL_scopestack_ix != 0)
728 Perl_warner(aTHX_ WARN_INTERNAL,
729 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
730 (long)PL_scopestack_ix);
731 if (PL_savestack_ix != 0)
732 Perl_warner(aTHX_ WARN_INTERNAL,
733 "Unbalanced saves: %ld more saves than restores\n",
734 (long)PL_savestack_ix);
735 if (PL_tmps_floor != -1)
736 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced tmps: %ld more allocs than frees\n",
737 (long)PL_tmps_floor + 1);
738 if (cxstack_ix != -1)
739 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced context: %ld more PUSHes than POPs\n",
740 (long)cxstack_ix + 1);
743 /* Now absolutely destruct everything, somehow or other, loops or no. */
744 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
745 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
747 /* the 2 is for PL_fdpid and PL_strtab */
748 while (PL_sv_count > 2 && sv_clean_all())
751 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
752 SvFLAGS(PL_fdpid) |= SVt_PVAV;
753 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
754 SvFLAGS(PL_strtab) |= SVt_PVHV;
756 AvREAL_off(PL_fdpid); /* no surviving entries */
757 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
760 #ifdef HAVE_INTERP_INTERN
764 /* Destruct the global string table. */
766 /* Yell and reset the HeVAL() slots that are still holding refcounts,
767 * so that sv_free() won't fail on them.
775 max = HvMAX(PL_strtab);
776 array = HvARRAY(PL_strtab);
779 if (hent && ckWARN_d(WARN_INTERNAL)) {
780 Perl_warner(aTHX_ WARN_INTERNAL,
781 "Unbalanced string table refcount: (%d) for \"%s\"",
782 HeVAL(hent) - Nullsv, HeKEY(hent));
783 HeVAL(hent) = Nullsv;
793 SvREFCNT_dec(PL_strtab);
796 /* free the pointer table used for cloning */
797 ptr_table_free(PL_ptr_table);
800 /* free special SVs */
802 SvREFCNT(&PL_sv_yes) = 0;
803 sv_clear(&PL_sv_yes);
804 SvANY(&PL_sv_yes) = NULL;
805 SvFLAGS(&PL_sv_yes) = 0;
807 SvREFCNT(&PL_sv_no) = 0;
809 SvANY(&PL_sv_no) = NULL;
810 SvFLAGS(&PL_sv_no) = 0;
812 SvREFCNT(&PL_sv_undef) = 0;
813 SvREADONLY_off(&PL_sv_undef);
815 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
816 Perl_warner(aTHX_ WARN_INTERNAL,"Scalars leaked: %ld\n", (long)PL_sv_count);
818 #if defined(PERLIO_LAYERS)
819 /* No more IO - including error messages ! */
820 PerlIO_cleanup(aTHX);
823 Safefree(PL_origfilename);
824 Safefree(PL_reg_start_tmp);
826 Safefree(PL_reg_curpm);
827 Safefree(PL_reg_poscache);
828 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
829 Safefree(PL_op_mask);
830 Safefree(PL_psig_ptr);
831 Safefree(PL_psig_name);
832 Safefree(PL_bitcount);
833 Safefree(PL_psig_pend);
835 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
837 DEBUG_P(debprofdump());
838 #ifdef USE_5005THREADS
839 MUTEX_DESTROY(&PL_strtab_mutex);
840 MUTEX_DESTROY(&PL_sv_mutex);
841 MUTEX_DESTROY(&PL_eval_mutex);
842 MUTEX_DESTROY(&PL_cred_mutex);
843 MUTEX_DESTROY(&PL_fdpid_mutex);
844 COND_DESTROY(&PL_eval_cond);
845 #ifdef EMULATE_ATOMIC_REFCOUNTS
846 MUTEX_DESTROY(&PL_svref_mutex);
847 #endif /* EMULATE_ATOMIC_REFCOUNTS */
849 /* As the penultimate thing, free the non-arena SV for thrsv */
850 Safefree(SvPVX(PL_thrsv));
851 Safefree(SvANY(PL_thrsv));
854 #endif /* USE_5005THREADS */
856 #ifdef USE_REENTRANT_API
857 Safefree(PL_reentrant_buffer->tmbuff);
858 Safefree(PL_reentrant_buffer);
863 /* As the absolutely last thing, free the non-arena SV for mess() */
866 /* it could have accumulated taint magic */
867 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
870 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
871 moremagic = mg->mg_moremagic;
872 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
874 Safefree(mg->mg_ptr);
878 /* we know that type >= SVt_PV */
879 (void)SvOOK_off(PL_mess_sv);
880 Safefree(SvPVX(PL_mess_sv));
881 Safefree(SvANY(PL_mess_sv));
882 Safefree(PL_mess_sv);
885 return STATUS_NATIVE_EXPORT;
889 =for apidoc perl_free
891 Releases a Perl interpreter. See L<perlembed>.
899 #if defined(WIN32) || defined(NETWARE)
900 # if defined(PERL_IMPLICIT_SYS)
902 void *host = nw_internal_host;
904 void *host = w32_internal_host;
908 nw5_delete_internal_host(host);
910 win32_delete_internal_host(host);
921 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
923 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
924 PL_exitlist[PL_exitlistlen].fn = fn;
925 PL_exitlist[PL_exitlistlen].ptr = ptr;
930 =for apidoc perl_parse
932 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
938 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
943 #ifdef USE_5005THREADS
947 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
950 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
951 setuid perl scripts securely.\n");
957 /* we copy rather than point to argv
958 * since perl_clone will copy and perl_destruct
959 * has no way of knowing if we've made a copy or
963 New(0, PL_origargv, i+1, char*);
964 PL_origargv[i] = '\0';
966 PL_origargv[i] = savepv(argv[i]);
974 /* Come here if running an undumped a.out. */
976 PL_origfilename = savepv(argv[0]);
977 PL_do_undump = FALSE;
978 cxstack_ix = -1; /* start label stack again */
980 init_postdump_symbols(argc,argv,env);
985 PL_curpad = AvARRAY(PL_comppad);
986 op_free(PL_main_root);
987 PL_main_root = Nullop;
989 PL_main_start = Nullop;
990 SvREFCNT_dec(PL_main_cv);
994 oldscope = PL_scopestack_ix;
995 PL_dowarn = G_WARN_OFF;
997 #ifdef PERL_FLEXIBLE_EXCEPTIONS
998 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
1004 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1005 parse_body(env,xsinit);
1008 call_list(oldscope, PL_checkav);
1015 /* my_exit() was called */
1016 while (PL_scopestack_ix > oldscope)
1019 PL_curstash = PL_defstash;
1021 call_list(oldscope, PL_checkav);
1022 ret = STATUS_NATIVE_EXPORT;
1025 PerlIO_printf(Perl_error_log, "panic: top_env\n");
1033 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1035 S_vparse_body(pTHX_ va_list args)
1037 char **env = va_arg(args, char**);
1038 XSINIT_t xsinit = va_arg(args, XSINIT_t);
1040 return parse_body(env, xsinit);
1045 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
1047 int argc = PL_origargc;
1048 char **argv = PL_origargv;
1049 char *scriptname = NULL;
1051 VOL bool dosearch = FALSE;
1052 char *validarg = "";
1056 char *cddir = Nullch;
1058 sv_setpvn(PL_linestr,"",0);
1059 sv = newSVpvn("",0); /* first used for -I flags */
1063 for (argc--,argv++; argc > 0; argc--,argv++) {
1064 if (argv[0][0] != '-' || !argv[0][1])
1068 validarg = " PHOOEY ";
1077 win32_argv2utf8(argc-1, argv+1);
1080 #ifndef PERL_STRICT_CR
1104 if ((s = moreswitches(s)))
1114 #ifdef MACOS_TRADITIONAL
1115 /* ignore -e for Dev:Pseudo argument */
1116 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
1119 if (PL_euid != PL_uid || PL_egid != PL_gid)
1120 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
1122 PL_e_script = newSVpvn("",0);
1123 filter_add(read_e_script, NULL);
1126 sv_catpv(PL_e_script, s);
1128 sv_catpv(PL_e_script, argv[1]);
1132 Perl_croak(aTHX_ "No code specified for -e");
1133 sv_catpv(PL_e_script, "\n");
1136 case 'I': /* -I handled both here and in moreswitches() */
1138 if (!*++s && (s=argv[1]) != Nullch) {
1143 STRLEN len = strlen(s);
1144 p = savepvn(s, len);
1145 incpush(p, TRUE, TRUE);
1146 sv_catpvn(sv, "-I", 2);
1147 sv_catpvn(sv, p, len);
1148 sv_catpvn(sv, " ", 1);
1152 Perl_croak(aTHX_ "No directory specified for -I");
1156 PL_preprocess = TRUE;
1166 PL_preambleav = newAV();
1167 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
1169 PL_Sv = newSVpv("print myconfig();",0);
1171 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
1173 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
1175 sv_catpv(PL_Sv,"\" Compile-time options:");
1177 sv_catpv(PL_Sv," DEBUGGING");
1179 # ifdef MULTIPLICITY
1180 sv_catpv(PL_Sv," MULTIPLICITY");
1182 # ifdef USE_5005THREADS
1183 sv_catpv(PL_Sv," USE_5005THREADS");
1185 # ifdef USE_ITHREADS
1186 sv_catpv(PL_Sv," USE_ITHREADS");
1188 # ifdef USE_64_BIT_INT
1189 sv_catpv(PL_Sv," USE_64_BIT_INT");
1191 # ifdef USE_64_BIT_ALL
1192 sv_catpv(PL_Sv," USE_64_BIT_ALL");
1194 # ifdef USE_LONG_DOUBLE
1195 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1197 # ifdef USE_LARGE_FILES
1198 sv_catpv(PL_Sv," USE_LARGE_FILES");
1201 sv_catpv(PL_Sv," USE_SOCKS");
1203 # ifdef PERL_IMPLICIT_CONTEXT
1204 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1206 # ifdef PERL_IMPLICIT_SYS
1207 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1209 sv_catpv(PL_Sv,"\\n\",");
1211 #if defined(LOCAL_PATCH_COUNT)
1212 if (LOCAL_PATCH_COUNT > 0) {
1214 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
1215 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1216 if (PL_localpatches[i])
1217 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
1221 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
1224 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
1226 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
1229 sv_catpv(PL_Sv, "; \
1231 @env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; ");
1234 push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
1237 print \" \\%ENV:\\n @env\\n\" if @env; \
1238 print \" \\@INC:\\n @INC\\n\";");
1241 PL_Sv = newSVpv("config_vars(qw(",0);
1242 sv_catpv(PL_Sv, ++s);
1243 sv_catpv(PL_Sv, "))");
1246 av_push(PL_preambleav, PL_Sv);
1247 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1250 PL_doextract = TRUE;
1258 if (!*++s || isSPACE(*s)) {
1262 /* catch use of gnu style long options */
1263 if (strEQ(s, "version")) {
1267 if (strEQ(s, "help")) {
1274 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1280 #ifndef SECURE_INTERNAL_GETENV
1283 (s = PerlEnv_getenv("PERL5OPT")))
1288 if (*s == '-' && *(s+1) == 'T')
1291 char *popt_copy = Nullch;
1304 if (!strchr("DIMUdmw", *s))
1305 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
1309 popt_copy = SvPVX(sv_2mortal(newSVpv(popt,0)));
1310 s = popt_copy + (s - popt);
1311 d = popt_copy + (d - popt);
1323 scriptname = argv[0];
1326 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1328 else if (scriptname == Nullch) {
1330 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1338 open_script(scriptname,dosearch,sv,&fdscript);
1340 validate_suid(validarg, scriptname,fdscript);
1343 #if defined(SIGCHLD) || defined(SIGCLD)
1346 # define SIGCHLD SIGCLD
1348 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1349 if (sigstate == SIG_IGN) {
1350 if (ckWARN(WARN_SIGNAL))
1351 Perl_warner(aTHX_ WARN_SIGNAL,
1352 "Can't ignore signal CHLD, forcing to default");
1353 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1359 #ifdef MACOS_TRADITIONAL
1360 if (PL_doextract || gMacPerl_AlwaysExtract) {
1365 if (cddir && PerlDir_chdir(cddir) < 0)
1366 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1370 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1371 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1372 CvUNIQUE_on(PL_compcv);
1374 PL_comppad = newAV();
1375 av_push(PL_comppad, Nullsv);
1376 PL_curpad = AvARRAY(PL_comppad);
1377 PL_comppad_name = newAV();
1378 PL_comppad_name_fill = 0;
1379 PL_min_intro_pending = 0;
1381 #ifdef USE_5005THREADS
1382 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
1383 PL_curpad[0] = (SV*)newAV();
1384 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1385 CvOWNER(PL_compcv) = 0;
1386 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1387 MUTEX_INIT(CvMUTEXP(PL_compcv));
1388 #endif /* USE_5005THREADS */
1390 comppadlist = newAV();
1391 AvREAL_off(comppadlist);
1392 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1393 av_store(comppadlist, 1, (SV*)PL_comppad);
1394 CvPADLIST(PL_compcv) = comppadlist;
1397 boot_core_UNIVERSAL();
1399 boot_core_xsutils();
1403 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
1405 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
1411 # ifdef HAS_SOCKS5_INIT
1412 socks5_init(argv[0]);
1418 init_predump_symbols();
1419 /* init_postdump_symbols not currently designed to be called */
1420 /* more than once (ENV isn't cleared first, for example) */
1421 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
1423 init_postdump_symbols(argc,argv,env);
1427 /* now parse the script */
1429 SETERRNO(0,SS$_NORMAL);
1431 #ifdef MACOS_TRADITIONAL
1432 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1434 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1436 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1437 MacPerl_MPWFileName(PL_origfilename));
1441 if (yyparse() || PL_error_count) {
1443 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
1445 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1450 CopLINE_set(PL_curcop, 0);
1451 PL_curstash = PL_defstash;
1452 PL_preprocess = FALSE;
1454 SvREFCNT_dec(PL_e_script);
1455 PL_e_script = Nullsv;
1459 Not sure that this is still the right place to do this now that we
1460 no longer use PL_nrs. HVDS 2001/09/09
1462 sv_setsv(get_sv("/", TRUE), PL_rs);
1468 SAVECOPFILE(PL_curcop);
1469 SAVECOPLINE(PL_curcop);
1470 gv_check(PL_defstash);
1477 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1478 dump_mstats("after compilation:");
1487 =for apidoc perl_run
1489 Tells a Perl interpreter to run. See L<perlembed>.
1500 #ifdef USE_5005THREADS
1504 oldscope = PL_scopestack_ix;
1509 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1511 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1517 cxstack_ix = -1; /* start context stack again */
1519 case 0: /* normal completion */
1520 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1525 case 2: /* my_exit() */
1526 while (PL_scopestack_ix > oldscope)
1529 PL_curstash = PL_defstash;
1530 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
1531 PL_endav && !PL_minus_c)
1532 call_list(oldscope, PL_endav);
1534 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1535 dump_mstats("after execution: ");
1537 ret = STATUS_NATIVE_EXPORT;
1541 POPSTACK_TO(PL_mainstack);
1544 PerlIO_printf(Perl_error_log, "panic: restartop\n");
1554 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1556 S_vrun_body(pTHX_ va_list args)
1558 I32 oldscope = va_arg(args, I32);
1560 return run_body(oldscope);
1566 S_run_body(pTHX_ I32 oldscope)
1568 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
1569 PL_sawampersand ? "Enabling" : "Omitting"));
1571 if (!PL_restartop) {
1572 DEBUG_x(dump_all());
1573 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
1574 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1578 #ifdef MACOS_TRADITIONAL
1579 PerlIO_printf(Perl_error_log, "# %s syntax OK\n", MacPerl_MPWFileName(PL_origfilename));
1581 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
1585 if (PERLDB_SINGLE && PL_DBsingle)
1586 sv_setiv(PL_DBsingle, 1);
1588 call_list(oldscope, PL_initav);
1594 PL_op = PL_restartop;
1598 else if (PL_main_start) {
1599 CvDEPTH(PL_main_cv) = 1;
1600 PL_op = PL_main_start;
1610 =for apidoc p||get_sv
1612 Returns the SV of the specified Perl scalar. If C<create> is set and the
1613 Perl variable does not exist then it will be created. If C<create> is not
1614 set and the variable does not exist then NULL is returned.
1620 Perl_get_sv(pTHX_ const char *name, I32 create)
1623 #ifdef USE_5005THREADS
1624 if (name[1] == '\0' && !isALPHA(name[0])) {
1625 PADOFFSET tmp = find_threadsv(name);
1626 if (tmp != NOT_IN_PAD)
1627 return THREADSV(tmp);
1629 #endif /* USE_5005THREADS */
1630 gv = gv_fetchpv(name, create, SVt_PV);
1637 =for apidoc p||get_av
1639 Returns the AV of the specified Perl array. If C<create> is set and the
1640 Perl variable does not exist then it will be created. If C<create> is not
1641 set and the variable does not exist then NULL is returned.
1647 Perl_get_av(pTHX_ const char *name, I32 create)
1649 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1658 =for apidoc p||get_hv
1660 Returns the HV of the specified Perl hash. If C<create> is set and the
1661 Perl variable does not exist then it will be created. If C<create> is not
1662 set and the variable does not exist then NULL is returned.
1668 Perl_get_hv(pTHX_ const char *name, I32 create)
1670 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1679 =for apidoc p||get_cv
1681 Returns the CV of the specified Perl subroutine. If C<create> is set and
1682 the Perl subroutine does not exist then it will be declared (which has the
1683 same effect as saying C<sub name;>). If C<create> is not set and the
1684 subroutine does not exist then NULL is returned.
1690 Perl_get_cv(pTHX_ const char *name, I32 create)
1692 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
1693 /* XXX unsafe for threads if eval_owner isn't held */
1694 /* XXX this is probably not what they think they're getting.
1695 * It has the same effect as "sub name;", i.e. just a forward
1697 if (create && !GvCVu(gv))
1698 return newSUB(start_subparse(FALSE, 0),
1699 newSVOP(OP_CONST, 0, newSVpv(name,0)),
1707 /* Be sure to refetch the stack pointer after calling these routines. */
1710 =for apidoc p||call_argv
1712 Performs a callback to the specified Perl sub. See L<perlcall>.
1718 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
1720 /* See G_* flags in cop.h */
1721 /* null terminated arg list */
1728 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
1733 return call_pv(sub_name, flags);
1737 =for apidoc p||call_pv
1739 Performs a callback to the specified Perl sub. See L<perlcall>.
1745 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
1746 /* name of the subroutine */
1747 /* See G_* flags in cop.h */
1749 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
1753 =for apidoc p||call_method
1755 Performs a callback to the specified Perl method. The blessed object must
1756 be on the stack. See L<perlcall>.
1762 Perl_call_method(pTHX_ const char *methname, I32 flags)
1763 /* name of the subroutine */
1764 /* See G_* flags in cop.h */
1766 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
1769 /* May be called with any of a CV, a GV, or an SV containing the name. */
1771 =for apidoc p||call_sv
1773 Performs a callback to the Perl sub whose name is in the SV. See
1780 Perl_call_sv(pTHX_ SV *sv, I32 flags)
1781 /* See G_* flags in cop.h */
1784 LOGOP myop; /* fake syntax tree node */
1787 volatile I32 retval = 0;
1789 bool oldcatch = CATCH_GET;
1794 if (flags & G_DISCARD) {
1799 Zero(&myop, 1, LOGOP);
1800 myop.op_next = Nullop;
1801 if (!(flags & G_NOARGS))
1802 myop.op_flags |= OPf_STACKED;
1803 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1804 (flags & G_ARRAY) ? OPf_WANT_LIST :
1809 EXTEND(PL_stack_sp, 1);
1810 *++PL_stack_sp = sv;
1812 oldscope = PL_scopestack_ix;
1814 if (PERLDB_SUB && PL_curstash != PL_debstash
1815 /* Handle first BEGIN of -d. */
1816 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
1817 /* Try harder, since this may have been a sighandler, thus
1818 * curstash may be meaningless. */
1819 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
1820 && !(flags & G_NODEBUG))
1821 PL_op->op_private |= OPpENTERSUB_DB;
1823 if (flags & G_METHOD) {
1824 Zero(&method_op, 1, UNOP);
1825 method_op.op_next = PL_op;
1826 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1827 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
1828 PL_op = (OP*)&method_op;
1831 if (!(flags & G_EVAL)) {
1833 call_body((OP*)&myop, FALSE);
1834 retval = PL_stack_sp - (PL_stack_base + oldmark);
1835 CATCH_SET(oldcatch);
1838 myop.op_other = (OP*)&myop;
1840 /* we're trying to emulate pp_entertry() here */
1842 register PERL_CONTEXT *cx;
1843 I32 gimme = GIMME_V;
1848 push_return(Nullop);
1849 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
1851 PL_eval_root = PL_op; /* Only needed so that goto works right. */
1853 PL_in_eval = EVAL_INEVAL;
1854 if (flags & G_KEEPERR)
1855 PL_in_eval |= EVAL_KEEPERR;
1861 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1863 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1870 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1872 call_body((OP*)&myop, FALSE);
1874 retval = PL_stack_sp - (PL_stack_base + oldmark);
1875 if (!(flags & G_KEEPERR))
1882 /* my_exit() was called */
1883 PL_curstash = PL_defstash;
1886 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1887 Perl_croak(aTHX_ "Callback called exit");
1892 PL_op = PL_restartop;
1896 PL_stack_sp = PL_stack_base + oldmark;
1897 if (flags & G_ARRAY)
1901 *++PL_stack_sp = &PL_sv_undef;
1906 if (PL_scopestack_ix > oldscope) {
1910 register PERL_CONTEXT *cx;
1922 if (flags & G_DISCARD) {
1923 PL_stack_sp = PL_stack_base + oldmark;
1932 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1934 S_vcall_body(pTHX_ va_list args)
1936 OP *myop = va_arg(args, OP*);
1937 int is_eval = va_arg(args, int);
1939 call_body(myop, is_eval);
1945 S_call_body(pTHX_ OP *myop, int is_eval)
1947 if (PL_op == myop) {
1949 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
1951 PL_op = Perl_pp_entersub(aTHX); /* this does */
1957 /* Eval a string. The G_EVAL flag is always assumed. */
1960 =for apidoc p||eval_sv
1962 Tells Perl to C<eval> the string in the SV.
1968 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
1970 /* See G_* flags in cop.h */
1973 UNOP myop; /* fake syntax tree node */
1974 volatile I32 oldmark = SP - PL_stack_base;
1975 volatile I32 retval = 0;
1981 if (flags & G_DISCARD) {
1988 Zero(PL_op, 1, UNOP);
1989 EXTEND(PL_stack_sp, 1);
1990 *++PL_stack_sp = sv;
1991 oldscope = PL_scopestack_ix;
1993 if (!(flags & G_NOARGS))
1994 myop.op_flags = OPf_STACKED;
1995 myop.op_next = Nullop;
1996 myop.op_type = OP_ENTEREVAL;
1997 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1998 (flags & G_ARRAY) ? OPf_WANT_LIST :
2000 if (flags & G_KEEPERR)
2001 myop.op_flags |= OPf_SPECIAL;
2003 #ifdef PERL_FLEXIBLE_EXCEPTIONS
2005 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
2012 #ifndef PERL_FLEXIBLE_EXCEPTIONS
2014 call_body((OP*)&myop,TRUE);
2016 retval = PL_stack_sp - (PL_stack_base + oldmark);
2017 if (!(flags & G_KEEPERR))
2024 /* my_exit() was called */
2025 PL_curstash = PL_defstash;
2028 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
2029 Perl_croak(aTHX_ "Callback called exit");
2034 PL_op = PL_restartop;
2038 PL_stack_sp = PL_stack_base + oldmark;
2039 if (flags & G_ARRAY)
2043 *++PL_stack_sp = &PL_sv_undef;
2049 if (flags & G_DISCARD) {
2050 PL_stack_sp = PL_stack_base + oldmark;
2060 =for apidoc p||eval_pv
2062 Tells Perl to C<eval> the given string and return an SV* result.
2068 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
2071 SV* sv = newSVpv(p, 0);
2073 eval_sv(sv, G_SCALAR);
2080 if (croak_on_error && SvTRUE(ERRSV)) {
2082 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
2088 /* Require a module. */
2091 =for apidoc p||require_pv
2093 Tells Perl to C<require> the file named by the string argument. It is
2094 analogous to the Perl code C<eval "require '$file'">. It's even
2095 implemented that way; consider using Perl_load_module instead.
2100 Perl_require_pv(pTHX_ const char *pv)
2104 PUSHSTACKi(PERLSI_REQUIRE);
2106 sv = sv_newmortal();
2107 sv_setpv(sv, "require '");
2110 eval_sv(sv, G_DISCARD);
2116 Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
2120 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
2121 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
2125 S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
2127 /* This message really ought to be max 23 lines.
2128 * Removed -h because the user already knows that option. Others? */
2130 static char *usage_msg[] = {
2131 "-0[octal] specify record separator (\\0, if no argument)",
2132 "-a autosplit mode with -n or -p (splits $_ into @F)",
2133 "-C enable native wide character system interfaces",
2134 "-c check syntax only (runs BEGIN and CHECK blocks)",
2135 "-d[:debugger] run program under debugger",
2136 "-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2137 "-e 'command' one line of program (several -e's allowed, omit programfile)",
2138 "-F/pattern/ split() pattern for -a switch (//'s are optional)",
2139 "-i[extension] edit <> files in place (makes backup if extension supplied)",
2140 "-Idirectory specify @INC/#include directory (several -I's allowed)",
2141 "-l[octal] enable line ending processing, specifies line terminator",
2142 "-[mM][-]module execute `use/no module...' before executing program",
2143 "-n assume 'while (<>) { ... }' loop around program",
2144 "-p assume loop like -n but print line also, like sed",
2145 "-P run program through C preprocessor before compilation",
2146 "-s enable rudimentary parsing for switches after programfile",
2147 "-S look for programfile using PATH environment variable",
2148 "-T enable tainting checks",
2149 "-u dump core after parsing program",
2150 "-U allow unsafe operations",
2151 "-v print version, subversion (includes VERY IMPORTANT perl info)",
2152 "-V[:variable] print configuration summary (or a single Config.pm variable)",
2153 "-w enable many useful warnings (RECOMMENDED)",
2154 "-W enable all warnings",
2155 "-X disable all warnings",
2156 "-x[directory] strip off text before #!perl line and perhaps cd to directory",
2160 char **p = usage_msg;
2162 PerlIO_printf(PerlIO_stdout(),
2163 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2166 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
2169 /* This routine handles any switches that can be given during run */
2172 Perl_moreswitches(pTHX_ char *s)
2182 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
2183 SvREFCNT_dec(PL_rs);
2184 if (rschar & ~((U8)~0))
2185 PL_rs = &PL_sv_undef;
2186 else if (!rschar && numlen >= 2)
2187 PL_rs = newSVpvn("", 0);
2190 PL_rs = newSVpvn(&ch, 1);
2195 PL_widesyscalls = TRUE;
2201 while (*s && !isSPACE(*s)) ++s;
2203 PL_splitstr = savepv(PL_splitstr);
2216 /* The following permits -d:Mod to accepts arguments following an =
2217 in the fashion that -MSome::Mod does. */
2218 if (*s == ':' || *s == '=') {
2221 sv = newSVpv("use Devel::", 0);
2223 /* We now allow -d:Module=Foo,Bar */
2224 while(isALNUM(*s) || *s==':') ++s;
2226 sv_catpv(sv, start);
2228 sv_catpvn(sv, start, s-start);
2229 sv_catpv(sv, " split(/,/,q{");
2234 my_setenv("PERL5DB", SvPV(sv, PL_na));
2237 PL_perldb = PERLDB_ALL;
2245 if (isALPHA(s[1])) {
2246 /* if adding extra options, remember to update DEBUG_MASK */
2247 static char debopts[] = "psltocPmfrxuLHXDSTR";
2250 for (s++; *s && (d = strchr(debopts,*s)); s++)
2251 PL_debug |= 1 << (d - debopts);
2254 PL_debug = atoi(s+1);
2255 for (s++; isDIGIT(*s); s++) ;
2257 PL_debug |= DEBUG_TOP_FLAG;
2259 if (ckWARN_d(WARN_DEBUGGING))
2260 Perl_warner(aTHX_ WARN_DEBUGGING,
2261 "Recompile perl with -DDEBUGGING to use -D switch\n");
2262 for (s++; isALNUM(*s); s++) ;
2268 usage(PL_origargv[0]);
2272 Safefree(PL_inplace);
2273 PL_inplace = savepv(s+1);
2275 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
2278 if (*s == '-') /* Additional switches on #! line. */
2282 case 'I': /* -I handled both here and in parse_body() */
2285 while (*s && isSPACE(*s))
2290 /* ignore trailing spaces (possibly followed by other switches) */
2292 for (e = p; *e && !isSPACE(*e); e++) ;
2296 } while (*p && *p != '-');
2297 e = savepvn(s, e-s);
2298 incpush(e, TRUE, TRUE);
2305 Perl_croak(aTHX_ "No directory specified for -I");
2311 SvREFCNT_dec(PL_ors_sv);
2316 PL_ors_sv = newSVpvn("\n",1);
2317 numlen = 3 + (*s == '0');
2318 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
2322 if (RsPARA(PL_rs)) {
2323 PL_ors_sv = newSVpvn("\n\n",2);
2326 PL_ors_sv = newSVsv(PL_rs);
2331 forbid_setid("-M"); /* XXX ? */
2334 forbid_setid("-m"); /* XXX ? */
2339 /* -M-foo == 'no foo' */
2340 if (*s == '-') { use = "no "; ++s; }
2341 sv = newSVpv(use,0);
2343 /* We allow -M'Module qw(Foo Bar)' */
2344 while(isALNUM(*s) || *s==':') ++s;
2346 sv_catpv(sv, start);
2347 if (*(start-1) == 'm') {
2349 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
2350 sv_catpv( sv, " ()");
2354 Perl_croak(aTHX_ "Module name required with -%c option",
2356 sv_catpvn(sv, start, s-start);
2357 sv_catpv(sv, " split(/,/,q{");
2363 PL_preambleav = newAV();
2364 av_push(PL_preambleav, sv);
2367 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
2379 PL_doswitches = TRUE;
2384 Perl_croak(aTHX_ "Too late for \"-T\" option");
2388 #ifdef MACOS_TRADITIONAL
2389 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2391 PL_do_undump = TRUE;
2400 PerlIO_printf(PerlIO_stdout(),
2401 Perl_form(aTHX_ "\nThis is perl, v%"VDf" built for %s",
2402 PL_patchlevel, ARCHNAME));
2404 /* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
2405 PerlIO_printf(PerlIO_stdout(),
2406 Perl_form(aTHX_ "\nThis is perl, version %vd\n", PL_patchlevel));
2407 PerlIO_printf(PerlIO_stdout(),
2408 Perl_form(aTHX_ " built under %s at %s %s\n",
2409 OSNAME, __DATE__, __TIME__));
2410 PerlIO_printf(PerlIO_stdout(),
2411 Perl_form(aTHX_ " OS Specific Release: %s\n",
2415 #if defined(LOCAL_PATCH_COUNT)
2416 if (LOCAL_PATCH_COUNT > 0)
2417 PerlIO_printf(PerlIO_stdout(),
2418 "\n(with %d registered patch%s, "
2419 "see perl -V for more detail)",
2420 (int)LOCAL_PATCH_COUNT,
2421 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
2424 PerlIO_printf(PerlIO_stdout(),
2425 "\n\nCopyright 1987-2001, Larry Wall\n");
2426 #ifdef MACOS_TRADITIONAL
2427 PerlIO_printf(PerlIO_stdout(),
2428 "\nMac OS port Copyright 1991-2001, Matthias Neeracher;\n"
2429 "maintained by Chris Nandor\n");
2432 PerlIO_printf(PerlIO_stdout(),
2433 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
2436 PerlIO_printf(PerlIO_stdout(),
2437 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2438 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
2441 PerlIO_printf(PerlIO_stdout(),
2442 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2443 "Version 5 port Copyright (c) 1994-1999, Andreas Kaiser, Ilya Zakharevich\n");
2446 PerlIO_printf(PerlIO_stdout(),
2447 "atariST series port, ++jrb bammi@cadence.com\n");
2450 PerlIO_printf(PerlIO_stdout(),
2451 "BeOS port Copyright Tom Spindler, 1997-1999\n");
2454 PerlIO_printf(PerlIO_stdout(),
2455 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2001\n");
2458 PerlIO_printf(PerlIO_stdout(),
2459 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
2462 PerlIO_printf(PerlIO_stdout(),
2463 "Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n");
2466 PerlIO_printf(PerlIO_stdout(),
2467 "VM/ESA port by Neale Ferguson, 1998-1999\n");
2470 PerlIO_printf(PerlIO_stdout(),
2471 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
2474 PerlIO_printf(PerlIO_stdout(),
2475 "MiNT port by Guido Flohr, 1997-1999\n");
2478 PerlIO_printf(PerlIO_stdout(),
2479 "EPOC port by Olaf Flebbe, 1999-2000\n");
2482 printf("WINCE port by Rainer Keuchel, 2001\n");
2483 printf("Built on " __DATE__ " " __TIME__ "\n\n");
2486 #ifdef BINARY_BUILD_NOTICE
2487 BINARY_BUILD_NOTICE;
2489 PerlIO_printf(PerlIO_stdout(),
2491 Perl may be copied only under the terms of either the Artistic License or the\n\
2492 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
2493 Complete documentation for Perl, including FAQ lists, should be found on\n\
2494 this system using `man perl' or `perldoc perl'. If you have access to the\n\
2495 Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
2498 if (! (PL_dowarn & G_WARN_ALL_MASK))
2499 PL_dowarn |= G_WARN_ON;
2503 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
2504 PL_compiling.cop_warnings = pWARN_ALL ;
2508 PL_dowarn = G_WARN_ALL_OFF;
2509 PL_compiling.cop_warnings = pWARN_NONE ;
2514 if (s[1] == '-') /* Additional switches on #! line. */
2519 #if defined(WIN32) || !defined(PERL_STRICT_CR)
2525 #ifdef ALTERNATE_SHEBANG
2526 case 'S': /* OS/2 needs -S on "extproc" line. */
2534 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
2539 /* compliments of Tom Christiansen */
2541 /* unexec() can be found in the Gnu emacs distribution */
2542 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
2545 Perl_my_unexec(pTHX)
2553 prog = newSVpv(BIN_EXP, 0);
2554 sv_catpv(prog, "/perl");
2555 file = newSVpv(PL_origfilename, 0);
2556 sv_catpv(file, ".perldump");
2558 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2559 /* unexec prints msg to stderr in case of failure */
2560 PerlProc_exit(status);
2563 # include <lib$routines.h>
2564 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
2566 ABORT(); /* for use with undump */
2571 /* initialize curinterp */
2577 # define PERLVAR(var,type)
2578 # define PERLVARA(var,n,type)
2579 # if defined(PERL_IMPLICIT_CONTEXT)
2580 # if defined(USE_5005THREADS)
2581 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2582 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2583 # else /* !USE_5005THREADS */
2584 # define PERLVARI(var,type,init) aTHX->var = init;
2585 # define PERLVARIC(var,type,init) aTHX->var = init;
2586 # endif /* USE_5005THREADS */
2588 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2589 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2591 # include "intrpvar.h"
2592 # ifndef USE_5005THREADS
2593 # include "thrdvar.h"
2600 # define PERLVAR(var,type)
2601 # define PERLVARA(var,n,type)
2602 # define PERLVARI(var,type,init) PL_##var = init;
2603 # define PERLVARIC(var,type,init) PL_##var = init;
2604 # include "intrpvar.h"
2605 # ifndef USE_5005THREADS
2606 # include "thrdvar.h"
2617 S_init_main_stash(pTHX)
2623 PL_curstash = PL_defstash = newHV();
2624 PL_curstname = newSVpvn("main",4);
2625 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2626 SvREFCNT_dec(GvHV(gv));
2627 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
2629 HvNAME(PL_defstash) = savepv("main");
2630 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2631 GvMULTI_on(PL_incgv);
2632 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2633 GvMULTI_on(PL_hintgv);
2634 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2635 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2636 GvMULTI_on(PL_errgv);
2637 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2638 GvMULTI_on(PL_replgv);
2639 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
2640 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2641 sv_setpvn(ERRSV, "", 0);
2642 PL_curstash = PL_defstash;
2643 CopSTASH_set(&PL_compiling, PL_defstash);
2644 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
2645 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
2646 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
2647 /* We must init $/ before switches are processed. */
2648 sv_setpvn(get_sv("/", TRUE), "\n", 1);
2652 S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
2657 PL_origfilename = savepv("-e");
2660 /* if find_script() returns, it returns a malloc()-ed value */
2661 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
2663 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2664 char *s = scriptname + 8;
2665 *fdscript = atoi(s);
2669 scriptname = savepv(s + 1);
2670 Safefree(PL_origfilename);
2671 PL_origfilename = scriptname;
2677 Safefree(CopFILE(PL_curcop));
2679 SvREFCNT_dec(CopFILEGV(PL_curcop));
2681 CopFILE_set(PL_curcop, PL_origfilename);
2682 if (strEQ(PL_origfilename,"-"))
2684 if (*fdscript >= 0) {
2685 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
2686 #if defined(HAS_FCNTL) && defined(F_SETFD)
2688 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2691 else if (PL_preprocess) {
2692 char *cpp_cfg = CPPSTDIN;
2693 SV *cpp = newSVpvn("",0);
2694 SV *cmd = NEWSV(0,0);
2696 if (strEQ(cpp_cfg, "cppstdin"))
2697 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
2698 sv_catpv(cpp, cpp_cfg);
2700 sv_catpvn(sv, "-I", 2);
2701 sv_catpv(sv,PRIVLIB_EXP);
2703 DEBUG_P(PerlIO_printf(Perl_debug_log,
2704 "PL_preprocess: scriptname=\"%s\", cpp=\"%s\", sv=\"%s\", CPPMINUS=\"%s\"\n",
2705 scriptname, SvPVX (cpp), SvPVX (sv), CPPMINUS));
2706 #if defined(MSDOS) || defined(WIN32)
2707 Perl_sv_setpvf(aTHX_ cmd, "\
2708 sed %s -e \"/^[^#]/b\" \
2709 -e \"/^#[ ]*include[ ]/b\" \
2710 -e \"/^#[ ]*define[ ]/b\" \
2711 -e \"/^#[ ]*if[ ]/b\" \
2712 -e \"/^#[ ]*ifdef[ ]/b\" \
2713 -e \"/^#[ ]*ifndef[ ]/b\" \
2714 -e \"/^#[ ]*else/b\" \
2715 -e \"/^#[ ]*elif[ ]/b\" \
2716 -e \"/^#[ ]*undef[ ]/b\" \
2717 -e \"/^#[ ]*endif/b\" \
2719 %s | %"SVf" -C %"SVf" %s",
2720 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
2723 Perl_sv_setpvf(aTHX_ cmd, "\
2724 %s %s -e '/^[^#]/b' \
2725 -e '/^#[ ]*include[ ]/b' \
2726 -e '/^#[ ]*define[ ]/b' \
2727 -e '/^#[ ]*if[ ]/b' \
2728 -e '/^#[ ]*ifdef[ ]/b' \
2729 -e '/^#[ ]*ifndef[ ]/b' \
2730 -e '/^#[ ]*else/b' \
2731 -e '/^#[ ]*elif[ ]/b' \
2732 -e '/^#[ ]*undef[ ]/b' \
2733 -e '/^#[ ]*endif/b' \
2735 %s | %"SVf" %"SVf" %s",
2737 Perl_sv_setpvf(aTHX_ cmd, "\
2738 %s %s -e '/^[^#]/b' \
2739 -e '/^#[ ]*include[ ]/b' \
2740 -e '/^#[ ]*define[ ]/b' \
2741 -e '/^#[ ]*if[ ]/b' \
2742 -e '/^#[ ]*ifdef[ ]/b' \
2743 -e '/^#[ ]*ifndef[ ]/b' \
2744 -e '/^#[ ]*else/b' \
2745 -e '/^#[ ]*elif[ ]/b' \
2746 -e '/^#[ ]*undef[ ]/b' \
2747 -e '/^#[ ]*endif/b' \
2749 %s | %"SVf" -C %"SVf" %s",
2756 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
2758 scriptname, cpp, sv, CPPMINUS);
2759 PL_doextract = FALSE;
2760 #ifdef IAMSUID /* actually, this is caught earlier */
2761 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
2763 (void)seteuid(PL_uid); /* musn't stay setuid root */
2766 (void)setreuid((Uid_t)-1, PL_uid);
2768 #ifdef HAS_SETRESUID
2769 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
2771 PerlProc_setuid(PL_uid);
2775 if (PerlProc_geteuid() != PL_uid)
2776 Perl_croak(aTHX_ "Can't do seteuid!\n");
2778 #endif /* IAMSUID */
2780 DEBUG_P(PerlIO_printf(Perl_debug_log,
2781 "PL_preprocess: cmd=\"%s\"\n",
2784 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
2788 else if (!*scriptname) {
2789 forbid_setid("program input from stdin");
2790 PL_rsfp = PerlIO_stdin();
2793 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
2794 #if defined(HAS_FCNTL) && defined(F_SETFD)
2796 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2801 #ifndef IAMSUID /* in case script is not readable before setuid */
2803 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
2804 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2807 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
2808 (int)PERL_REVISION, (int)PERL_VERSION,
2809 (int)PERL_SUBVERSION), PL_origargv);
2810 Perl_croak(aTHX_ "Can't do setuid\n");
2816 Perl_croak(aTHX_ "Can't open perl script: %s\n",
2819 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
2820 CopFILE(PL_curcop), Strerror(errno));
2826 * I_SYSSTATVFS HAS_FSTATVFS
2828 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
2829 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2830 * here so that metaconfig picks them up. */
2834 S_fd_on_nosuid_fs(pTHX_ int fd)
2836 int check_okay = 0; /* able to do all the required sys/libcalls */
2837 int on_nosuid = 0; /* the fd is on a nosuid fs */
2839 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
2840 * fstatvfs() is UNIX98.
2841 * fstatfs() is 4.3 BSD.
2842 * ustat()+getmnt() is pre-4.3 BSD.
2843 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2844 * an irrelevant filesystem while trying to reach the right one.
2847 #undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2849 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2850 defined(HAS_FSTATVFS)
2851 # define FD_ON_NOSUID_CHECK_OKAY
2852 struct statvfs stfs;
2854 check_okay = fstatvfs(fd, &stfs) == 0;
2855 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
2856 # endif /* fstatvfs */
2858 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2859 defined(PERL_MOUNT_NOSUID) && \
2860 defined(HAS_FSTATFS) && \
2861 defined(HAS_STRUCT_STATFS) && \
2862 defined(HAS_STRUCT_STATFS_F_FLAGS)
2863 # define FD_ON_NOSUID_CHECK_OKAY
2866 check_okay = fstatfs(fd, &stfs) == 0;
2867 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
2868 # endif /* fstatfs */
2870 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2871 defined(PERL_MOUNT_NOSUID) && \
2872 defined(HAS_FSTAT) && \
2873 defined(HAS_USTAT) && \
2874 defined(HAS_GETMNT) && \
2875 defined(HAS_STRUCT_FS_DATA) && \
2877 # define FD_ON_NOSUID_CHECK_OKAY
2880 if (fstat(fd, &fdst) == 0) {
2882 if (ustat(fdst.st_dev, &us) == 0) {
2884 /* NOSTAT_ONE here because we're not examining fields which
2885 * vary between that case and STAT_ONE. */
2886 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
2887 size_t cmplen = sizeof(us.f_fname);
2888 if (sizeof(fsd.fd_req.path) < cmplen)
2889 cmplen = sizeof(fsd.fd_req.path);
2890 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2891 fdst.st_dev == fsd.fd_req.dev) {
2893 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2899 # endif /* fstat+ustat+getmnt */
2901 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2902 defined(HAS_GETMNTENT) && \
2903 defined(HAS_HASMNTOPT) && \
2904 defined(MNTOPT_NOSUID)
2905 # define FD_ON_NOSUID_CHECK_OKAY
2906 FILE *mtab = fopen("/etc/mtab", "r");
2907 struct mntent *entry;
2908 struct stat stb, fsb;
2910 if (mtab && (fstat(fd, &stb) == 0)) {
2911 while (entry = getmntent(mtab)) {
2912 if (stat(entry->mnt_dir, &fsb) == 0
2913 && fsb.st_dev == stb.st_dev)
2915 /* found the filesystem */
2917 if (hasmntopt(entry, MNTOPT_NOSUID))
2920 } /* A single fs may well fail its stat(). */
2925 # endif /* getmntent+hasmntopt */
2928 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
2931 #endif /* IAMSUID */
2934 S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
2940 /* do we need to emulate setuid on scripts? */
2942 /* This code is for those BSD systems that have setuid #! scripts disabled
2943 * in the kernel because of a security problem. Merely defining DOSUID
2944 * in perl will not fix that problem, but if you have disabled setuid
2945 * scripts in the kernel, this will attempt to emulate setuid and setgid
2946 * on scripts that have those now-otherwise-useless bits set. The setuid
2947 * root version must be called suidperl or sperlN.NNN. If regular perl
2948 * discovers that it has opened a setuid script, it calls suidperl with
2949 * the same argv that it had. If suidperl finds that the script it has
2950 * just opened is NOT setuid root, it sets the effective uid back to the
2951 * uid. We don't just make perl setuid root because that loses the
2952 * effective uid we had before invoking perl, if it was different from the
2955 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2956 * be defined in suidperl only. suidperl must be setuid root. The
2957 * Configure script will set this up for you if you want it.
2963 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
2964 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
2965 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
2970 #ifndef HAS_SETREUID
2971 /* On this access check to make sure the directories are readable,
2972 * there is actually a small window that the user could use to make
2973 * filename point to an accessible directory. So there is a faint
2974 * chance that someone could execute a setuid script down in a
2975 * non-accessible directory. I don't know what to do about that.
2976 * But I don't think it's too important. The manual lies when
2977 * it says access() is useful in setuid programs.
2979 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
2980 Perl_croak(aTHX_ "Permission denied");
2982 /* If we can swap euid and uid, then we can determine access rights
2983 * with a simple stat of the file, and then compare device and
2984 * inode to make sure we did stat() on the same file we opened.
2985 * Then we just have to make sure he or she can execute it.
2988 struct stat tmpstatbuf;
2992 setreuid(PL_euid,PL_uid) < 0
2995 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
2998 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
2999 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
3000 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
3001 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
3002 #if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
3003 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
3004 Perl_croak(aTHX_ "Permission denied");
3006 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
3007 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
3008 (void)PerlIO_close(PL_rsfp);
3009 Perl_croak(aTHX_ "Permission denied\n");
3013 setreuid(PL_uid,PL_euid) < 0
3015 # if defined(HAS_SETRESUID)
3016 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
3019 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
3020 Perl_croak(aTHX_ "Can't reswap uid and euid");
3021 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
3022 Perl_croak(aTHX_ "Permission denied\n");
3024 #endif /* HAS_SETREUID */
3025 #endif /* IAMSUID */
3027 if (!S_ISREG(PL_statbuf.st_mode))
3028 Perl_croak(aTHX_ "Permission denied");
3029 if (PL_statbuf.st_mode & S_IWOTH)
3030 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
3031 PL_doswitches = FALSE; /* -s is insecure in suid */
3032 CopLINE_inc(PL_curcop);
3033 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
3034 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
3035 Perl_croak(aTHX_ "No #! line");
3036 s = SvPV(PL_linestr,n_a)+2;
3038 while (!isSPACE(*s)) s++;
3039 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
3040 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
3041 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
3042 Perl_croak(aTHX_ "Not a perl script");
3043 while (*s == ' ' || *s == '\t') s++;
3045 * #! arg must be what we saw above. They can invoke it by
3046 * mentioning suidperl explicitly, but they may not add any strange
3047 * arguments beyond what #! says if they do invoke suidperl that way.
3049 len = strlen(validarg);
3050 if (strEQ(validarg," PHOOEY ") ||
3051 strnNE(s,validarg,len) || !isSPACE(s[len]))
3052 Perl_croak(aTHX_ "Args must match #! line");
3055 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
3056 PL_euid == PL_statbuf.st_uid)
3058 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3059 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3060 #endif /* IAMSUID */
3062 if (PL_euid) { /* oops, we're not the setuid root perl */
3063 (void)PerlIO_close(PL_rsfp);
3066 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
3067 (int)PERL_REVISION, (int)PERL_VERSION,
3068 (int)PERL_SUBVERSION), PL_origargv);
3070 Perl_croak(aTHX_ "Can't do setuid\n");
3073 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
3075 (void)setegid(PL_statbuf.st_gid);
3078 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
3080 #ifdef HAS_SETRESGID
3081 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
3083 PerlProc_setgid(PL_statbuf.st_gid);
3087 if (PerlProc_getegid() != PL_statbuf.st_gid)
3088 Perl_croak(aTHX_ "Can't do setegid!\n");
3090 if (PL_statbuf.st_mode & S_ISUID) {
3091 if (PL_statbuf.st_uid != PL_euid)
3093 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
3096 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
3098 #ifdef HAS_SETRESUID
3099 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
3101 PerlProc_setuid(PL_statbuf.st_uid);
3105 if (PerlProc_geteuid() != PL_statbuf.st_uid)
3106 Perl_croak(aTHX_ "Can't do seteuid!\n");
3108 else if (PL_uid) { /* oops, mustn't run as root */
3110 (void)seteuid((Uid_t)PL_uid);
3113 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
3115 #ifdef HAS_SETRESUID
3116 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
3118 PerlProc_setuid((Uid_t)PL_uid);
3122 if (PerlProc_geteuid() != PL_uid)
3123 Perl_croak(aTHX_ "Can't do seteuid!\n");
3126 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
3127 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
3130 else if (PL_preprocess)
3131 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
3132 else if (fdscript >= 0)
3133 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
3135 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
3137 /* We absolutely must clear out any saved ids here, so we */
3138 /* exec the real perl, substituting fd script for scriptname. */
3139 /* (We pass script name as "subdir" of fd, which perl will grok.) */
3140 PerlIO_rewind(PL_rsfp);
3141 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
3142 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3143 if (!PL_origargv[which])
3144 Perl_croak(aTHX_ "Permission denied");
3145 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
3146 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
3147 #if defined(HAS_FCNTL) && defined(F_SETFD)
3148 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
3150 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
3151 (int)PERL_REVISION, (int)PERL_VERSION,
3152 (int)PERL_SUBVERSION), PL_origargv);/* try again */
3153 Perl_croak(aTHX_ "Can't do setuid\n");
3154 #endif /* IAMSUID */
3156 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
3157 #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
3158 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3159 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3161 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3164 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3165 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3166 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3167 /* not set-id, must be wrapped */
3173 S_find_beginning(pTHX)
3175 register char *s, *s2;
3177 /* skip forward in input to the real script? */
3180 #ifdef MACOS_TRADITIONAL
3181 /* Since the Mac OS does not honor #! arguments for us, we do it ourselves */
3183 while (PL_doextract || gMacPerl_AlwaysExtract) {
3184 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3185 if (!gMacPerl_AlwaysExtract)
3186 Perl_croak(aTHX_ "No Perl script found in input\n");
3188 if (PL_doextract) /* require explicit override ? */
3189 if (!OverrideExtract(PL_origfilename))
3190 Perl_croak(aTHX_ "User aborted script\n");
3192 PL_doextract = FALSE;
3194 /* Pater peccavi, file does not have #! */
3195 PerlIO_rewind(PL_rsfp);
3200 while (PL_doextract) {
3201 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
3202 Perl_croak(aTHX_ "No Perl script found in input\n");
3205 if (*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))) {
3206 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3207 PL_doextract = FALSE;
3208 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3210 while (*s == ' ' || *s == '\t') s++;
3212 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3213 if (strnEQ(s2-4,"perl",4))
3215 while ((s = moreswitches(s)))
3218 #ifdef MACOS_TRADITIONAL
3229 PL_uid = PerlProc_getuid();
3230 PL_euid = PerlProc_geteuid();
3231 PL_gid = PerlProc_getgid();
3232 PL_egid = PerlProc_getegid();
3234 PL_uid |= PL_gid << 16;
3235 PL_euid |= PL_egid << 16;
3237 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3241 S_forbid_setid(pTHX_ char *s)
3243 if (PL_euid != PL_uid)
3244 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3245 if (PL_egid != PL_gid)
3246 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
3250 Perl_init_debugger(pTHX)
3252 HV *ostash = PL_curstash;
3254 PL_curstash = PL_debstash;
3255 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3256 AvREAL_off(PL_dbargs);
3257 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3258 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3259 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
3260 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3261 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
3262 sv_setiv(PL_DBsingle, 0);
3263 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
3264 sv_setiv(PL_DBtrace, 0);
3265 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
3266 sv_setiv(PL_DBsignal, 0);
3267 PL_curstash = ostash;
3270 #ifndef STRESS_REALLOC
3271 #define REASONABLE(size) (size)
3273 #define REASONABLE(size) (1) /* unreasonable */
3277 Perl_init_stacks(pTHX)
3279 /* start with 128-item stack and 8K cxstack */
3280 PL_curstackinfo = new_stackinfo(REASONABLE(128),
3281 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3282 PL_curstackinfo->si_type = PERLSI_MAIN;
3283 PL_curstack = PL_curstackinfo->si_stack;
3284 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
3286 PL_stack_base = AvARRAY(PL_curstack);
3287 PL_stack_sp = PL_stack_base;
3288 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
3290 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3293 PL_tmps_max = REASONABLE(128);
3295 New(54,PL_markstack,REASONABLE(32),I32);
3296 PL_markstack_ptr = PL_markstack;
3297 PL_markstack_max = PL_markstack + REASONABLE(32);
3301 New(54,PL_scopestack,REASONABLE(32),I32);
3302 PL_scopestack_ix = 0;
3303 PL_scopestack_max = REASONABLE(32);
3305 New(54,PL_savestack,REASONABLE(128),ANY);
3306 PL_savestack_ix = 0;
3307 PL_savestack_max = REASONABLE(128);
3309 New(54,PL_retstack,REASONABLE(16),OP*);
3311 PL_retstack_max = REASONABLE(16);
3319 while (PL_curstackinfo->si_next)
3320 PL_curstackinfo = PL_curstackinfo->si_next;
3321 while (PL_curstackinfo) {
3322 PERL_SI *p = PL_curstackinfo->si_prev;
3323 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3324 Safefree(PL_curstackinfo->si_cxstack);
3325 Safefree(PL_curstackinfo);
3326 PL_curstackinfo = p;
3328 Safefree(PL_tmps_stack);
3329 Safefree(PL_markstack);
3330 Safefree(PL_scopestack);
3331 Safefree(PL_savestack);
3332 Safefree(PL_retstack);
3341 lex_start(PL_linestr);
3343 PL_subname = newSVpvn("main",4);
3347 S_init_predump_symbols(pTHX)
3352 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3353 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3354 GvMULTI_on(PL_stdingv);
3355 io = GvIOp(PL_stdingv);
3356 IoTYPE(io) = IoTYPE_RDONLY;
3357 IoIFP(io) = PerlIO_stdin();
3358 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
3360 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3362 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
3365 IoTYPE(io) = IoTYPE_WRONLY;
3366 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
3368 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
3370 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3372 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3373 GvMULTI_on(PL_stderrgv);
3374 io = GvIOp(PL_stderrgv);
3375 IoTYPE(io) = IoTYPE_WRONLY;
3376 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
3377 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
3379 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3381 PL_statname = NEWSV(66,0); /* last filename we did stat on */
3384 Safefree(PL_osname);
3385 PL_osname = savepv(OSNAME);
3389 Perl_init_argv_symbols(pTHX_ register int argc, register char **argv)
3392 argc--,argv++; /* skip name of script */
3393 if (PL_doswitches) {
3394 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3397 if (argv[0][1] == '-' && !argv[0][2]) {
3401 if ((s = strchr(argv[0], '='))) {
3403 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
3406 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
3409 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3410 GvMULTI_on(PL_argvgv);
3411 (void)gv_AVadd(PL_argvgv);
3412 av_clear(GvAVn(PL_argvgv));
3413 for (; argc > 0; argc--,argv++) {
3414 SV *sv = newSVpv(argv[0],0);
3415 av_push(GvAVn(PL_argvgv),sv);
3416 if (PL_widesyscalls)
3417 (void)sv_utf8_decode(sv);
3422 #ifdef HAS_PROCSELFEXE
3423 /* This is a function so that we don't hold on to MAXPATHLEN
3424 bytes of stack longer than necessary
3427 S_procself_val(pTHX_ SV *sv, char *arg0)
3429 char buf[MAXPATHLEN];
3430 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
3432 sv_setpvn(sv,buf,len);
3438 #endif /* HAS_PROCSELFEXE */
3441 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
3446 #ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3447 char **dup_env_base = 0;
3448 int dup_env_count = 0;
3451 PL_toptarget = NEWSV(0,0);
3452 sv_upgrade(PL_toptarget, SVt_PVFM);
3453 sv_setpvn(PL_toptarget, "", 0);
3454 PL_bodytarget = NEWSV(0,0);
3455 sv_upgrade(PL_bodytarget, SVt_PVFM);
3456 sv_setpvn(PL_bodytarget, "", 0);
3457 PL_formtarget = PL_bodytarget;
3461 init_argv_symbols(argc,argv);
3463 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
3464 #ifdef MACOS_TRADITIONAL
3465 /* $0 is not majick on a Mac */
3466 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3468 sv_setpv(GvSV(tmpgv),PL_origfilename);
3469 magicname("0", "0", 1);
3472 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV))) {/* $^X */
3473 #ifdef HAS_PROCSELFEXE
3474 S_procself_val(aTHX_ GvSV(tmpgv), PL_origargv[0]);
3477 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
3479 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
3483 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
3485 GvMULTI_on(PL_envgv);
3486 hv = GvHVn(PL_envgv);
3487 hv_magic(hv, Nullgv, PERL_MAGIC_env);
3488 #ifdef USE_ENVIRON_ARRAY
3489 /* Note that if the supplied env parameter is actually a copy
3490 of the global environ then it may now point to free'd memory
3491 if the environment has been modified since. To avoid this
3492 problem we treat env==NULL as meaning 'use the default'
3497 environ[0] = Nullch;
3498 #ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3501 for (env_base = env; *env; env++)
3503 if ((dup_env_base = (char **)
3504 safesysmalloc( sizeof(char *) * (dup_env_count+1) ))) {
3506 for (env = env_base, dup_env = dup_env_base;
3509 /* With environ one needs to use safesysmalloc(). */
3510 *dup_env = safesysmalloc(strlen(*env) + 1);
3511 (void)strcpy(*dup_env, *env);
3517 #endif /* NEED_ENVIRON_DUP_FOR_MODIFY */
3519 for (; *env; env++) {
3520 if (!(s = strchr(*env,'=')))
3526 sv = newSVpv(s--,0);
3527 (void)hv_store(hv, *env, s - *env, sv, 0);
3530 #ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3533 for (dup_env = dup_env_base; *dup_env; dup_env++)
3534 safesysfree(*dup_env);
3535 safesysfree(dup_env_base);
3537 #endif /* NEED_ENVIRON_DUP_FOR_MODIFY */
3538 #endif /* USE_ENVIRON_ARRAY */
3541 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
3542 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
3546 S_init_perllib(pTHX)
3551 s = PerlEnv_getenv("PERL5LIB");
3553 incpush(s, TRUE, TRUE);
3555 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE);
3557 /* Treat PERL5?LIB as a possible search list logical name -- the
3558 * "natural" VMS idiom for a Unix path string. We allow each
3559 * element to be a set of |-separated directories for compatibility.
3563 if (my_trnlnm("PERL5LIB",buf,0))
3564 do { incpush(buf,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
3566 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE);
3570 /* Use the ~-expanded versions of APPLLIB (undocumented),
3571 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
3574 incpush(APPLLIB_EXP, TRUE, TRUE);
3578 incpush(ARCHLIB_EXP, FALSE, FALSE);
3580 #ifdef MACOS_TRADITIONAL
3582 struct stat tmpstatbuf;
3583 SV * privdir = NEWSV(55, 0);
3584 char * macperl = PerlEnv_getenv("MACPERL");
3589 Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl);
3590 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3591 incpush(SvPVX(privdir), TRUE, FALSE);
3592 Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl);
3593 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3594 incpush(SvPVX(privdir), TRUE, FALSE);
3596 SvREFCNT_dec(privdir);
3599 incpush(":", FALSE, FALSE);
3602 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
3605 incpush(PRIVLIB_EXP, TRUE, FALSE);
3607 incpush(PRIVLIB_EXP, FALSE, FALSE);
3611 /* sitearch is always relative to sitelib on Windows for
3612 * DLL-based path intuition to work correctly */
3613 # if !defined(WIN32)
3614 incpush(SITEARCH_EXP, FALSE, FALSE);
3620 incpush(SITELIB_EXP, TRUE, FALSE); /* this picks up sitearch as well */
3622 incpush(SITELIB_EXP, FALSE, FALSE);
3626 #ifdef SITELIB_STEM /* Search for version-specific dirs below here */
3627 incpush(SITELIB_STEM, FALSE, TRUE);
3630 #ifdef PERL_VENDORARCH_EXP
3631 /* vendorarch is always relative to vendorlib on Windows for
3632 * DLL-based path intuition to work correctly */
3633 # if !defined(WIN32)
3634 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE);
3638 #ifdef PERL_VENDORLIB_EXP
3640 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE); /* this picks up vendorarch as well */
3642 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE);
3646 #ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
3647 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE);
3650 #ifdef PERL_OTHERLIBDIRS
3651 incpush(PERL_OTHERLIBDIRS, TRUE, TRUE);
3655 incpush(".", FALSE, FALSE);
3656 #endif /* MACOS_TRADITIONAL */
3659 #if defined(DOSISH) || defined(EPOC)
3660 # define PERLLIB_SEP ';'
3663 # define PERLLIB_SEP '|'
3665 # if defined(MACOS_TRADITIONAL)
3666 # define PERLLIB_SEP ','
3668 # define PERLLIB_SEP ':'
3672 #ifndef PERLLIB_MANGLE
3673 # define PERLLIB_MANGLE(s,n) (s)
3677 S_incpush(pTHX_ char *p, int addsubdirs, int addoldvers)
3679 SV *subdir = Nullsv;
3684 if (addsubdirs || addoldvers) {
3685 subdir = sv_newmortal();
3688 /* Break at all separators */
3690 SV *libdir = NEWSV(55,0);
3693 /* skip any consecutive separators */
3694 while ( *p == PERLLIB_SEP ) {
3695 /* Uncomment the next line for PATH semantics */
3696 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
3700 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
3701 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
3706 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
3707 p = Nullch; /* break out */
3709 #ifdef MACOS_TRADITIONAL
3710 if (!strchr(SvPVX(libdir), ':'))
3711 sv_insert(libdir, 0, 0, ":", 1);
3712 if (SvPVX(libdir)[SvCUR(libdir)-1] != ':')
3713 sv_catpv(libdir, ":");
3717 * BEFORE pushing libdir onto @INC we may first push version- and
3718 * archname-specific sub-directories.
3720 if (addsubdirs || addoldvers) {
3721 #ifdef PERL_INC_VERSION_LIST
3722 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
3723 const char *incverlist[] = { PERL_INC_VERSION_LIST };
3724 const char **incver;
3726 struct stat tmpstatbuf;
3731 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
3733 while (unix[len-1] == '/') len--; /* Cosmetic */
3734 sv_usepvn(libdir,unix,len);
3737 PerlIO_printf(Perl_error_log,
3738 "Failed to unixify @INC element \"%s\"\n",
3742 #ifdef MACOS_TRADITIONAL
3743 #define PERL_AV_SUFFIX_FMT ""
3744 #define PERL_ARCH_FMT "%s:"
3745 #define PERL_ARCH_FMT_PATH PERL_FS_VER_FMT PERL_AV_SUFFIX_FMT
3747 #define PERL_AV_SUFFIX_FMT "/"
3748 #define PERL_ARCH_FMT "/%s"
3749 #define PERL_ARCH_FMT_PATH PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT
3751 /* .../version/archname if -d .../version/archname */
3752 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH PERL_ARCH_FMT,
3754 (int)PERL_REVISION, (int)PERL_VERSION,
3755 (int)PERL_SUBVERSION, ARCHNAME);
3756 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3757 S_ISDIR(tmpstatbuf.st_mode))
3758 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3760 /* .../version if -d .../version */
3761 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH, libdir,
3762 (int)PERL_REVISION, (int)PERL_VERSION,
3763 (int)PERL_SUBVERSION);
3764 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3765 S_ISDIR(tmpstatbuf.st_mode))
3766 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3768 /* .../archname if -d .../archname */
3769 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, ARCHNAME);
3770 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3771 S_ISDIR(tmpstatbuf.st_mode))
3772 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3775 #ifdef PERL_INC_VERSION_LIST
3777 for (incver = incverlist; *incver; incver++) {
3778 /* .../xxx if -d .../xxx */
3779 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, *incver);
3780 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3781 S_ISDIR(tmpstatbuf.st_mode))
3782 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3788 /* finally push this lib directory on the end of @INC */
3789 av_push(GvAVn(PL_incgv), libdir);
3793 #ifdef USE_5005THREADS
3794 STATIC struct perl_thread *
3795 S_init_main_thread(pTHX)
3797 #if !defined(PERL_IMPLICIT_CONTEXT)
3798 struct perl_thread *thr;
3802 Newz(53, thr, 1, struct perl_thread);
3803 PL_curcop = &PL_compiling;
3804 thr->interp = PERL_GET_INTERP;
3805 thr->cvcache = newHV();
3806 thr->threadsv = newAV();
3807 /* thr->threadsvp is set when find_threadsv is called */
3808 thr->specific = newAV();
3809 thr->flags = THRf_R_JOINABLE;
3810 MUTEX_INIT(&thr->mutex);
3811 /* Handcraft thrsv similarly to mess_sv */
3812 New(53, PL_thrsv, 1, SV);
3813 Newz(53, xpv, 1, XPV);
3814 SvFLAGS(PL_thrsv) = SVt_PV;
3815 SvANY(PL_thrsv) = (void*)xpv;
3816 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
3817 SvPVX(PL_thrsv) = (char*)thr;
3818 SvCUR_set(PL_thrsv, sizeof(thr));
3819 SvLEN_set(PL_thrsv, sizeof(thr));
3820 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
3821 thr->oursv = PL_thrsv;
3822 PL_chopset = " \n-";
3825 MUTEX_LOCK(&PL_threads_mutex);
3831 MUTEX_UNLOCK(&PL_threads_mutex);
3833 #ifdef HAVE_THREAD_INTERN
3834 Perl_init_thread_intern(thr);
3837 #ifdef SET_THREAD_SELF
3838 SET_THREAD_SELF(thr);
3840 thr->self = pthread_self();
3841 #endif /* SET_THREAD_SELF */
3845 * These must come after the thread self setting
3846 * because sv_setpvn does SvTAINT and the taint
3847 * fields thread selfness being set.
3849 PL_toptarget = NEWSV(0,0);
3850 sv_upgrade(PL_toptarget, SVt_PVFM);
3851 sv_setpvn(PL_toptarget, "", 0);
3852 PL_bodytarget = NEWSV(0,0);
3853 sv_upgrade(PL_bodytarget, SVt_PVFM);
3854 sv_setpvn(PL_bodytarget, "", 0);
3855 PL_formtarget = PL_bodytarget;
3856 thr->errsv = newSVpvn("", 0);
3857 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
3860 PL_peepp = MEMBER_TO_FPTR(Perl_peep);
3861 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3862 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3863 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3864 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3865 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
3867 PL_reginterp_cnt = 0;
3871 #endif /* USE_5005THREADS */
3874 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
3877 line_t oldline = CopLINE(PL_curcop);
3883 while (AvFILL(paramList) >= 0) {
3884 cv = (CV*)av_shift(paramList);
3885 if (PL_savebegin && (paramList == PL_beginav)) {
3886 /* save PL_beginav for compiler */
3887 if (! PL_beginav_save)
3888 PL_beginav_save = newAV();
3889 av_push(PL_beginav_save, (SV*)cv);
3893 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3894 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_list_body), cv);
3900 #ifndef PERL_FLEXIBLE_EXCEPTIONS
3904 (void)SvPV(atsv, len);
3907 PL_curcop = &PL_compiling;
3908 CopLINE_set(PL_curcop, oldline);
3909 if (paramList == PL_beginav)
3910 sv_catpv(atsv, "BEGIN failed--compilation aborted");
3912 Perl_sv_catpvf(aTHX_ atsv,
3913 "%s failed--call queue aborted",
3914 paramList == PL_checkav ? "CHECK"
3915 : paramList == PL_initav ? "INIT"
3917 while (PL_scopestack_ix > oldscope)
3920 Perl_croak(aTHX_ "%s", SvPVx(atsv, n_a));
3927 /* my_exit() was called */
3928 while (PL_scopestack_ix > oldscope)
3931 PL_curstash = PL_defstash;
3932 PL_curcop = &PL_compiling;
3933 CopLINE_set(PL_curcop, oldline);
3935 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
3936 if (paramList == PL_beginav)
3937 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
3939 Perl_croak(aTHX_ "%s failed--call queue aborted",
3940 paramList == PL_checkav ? "CHECK"
3941 : paramList == PL_initav ? "INIT"
3948 PL_curcop = &PL_compiling;
3949 CopLINE_set(PL_curcop, oldline);
3952 PerlIO_printf(Perl_error_log, "panic: restartop\n");
3960 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3962 S_vcall_list_body(pTHX_ va_list args)
3964 CV *cv = va_arg(args, CV*);
3965 return call_list_body(cv);
3970 S_call_list_body(pTHX_ CV *cv)
3972 PUSHMARK(PL_stack_sp);
3973 call_sv((SV*)cv, G_EVAL|G_DISCARD);
3978 Perl_my_exit(pTHX_ U32 status)
3980 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
3981 thr, (unsigned long) status));
3990 STATUS_NATIVE_SET(status);
3997 Perl_my_failure_exit(pTHX)
4000 if (vaxc$errno & 1) {
4001 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
4002 STATUS_NATIVE_SET(44);
4005 if (!vaxc$errno && errno) /* unlikely */
4006 STATUS_NATIVE_SET(44);
4008 STATUS_NATIVE_SET(vaxc$errno);
4013 STATUS_POSIX_SET(errno);
4015 exitstatus = STATUS_POSIX >> 8;
4016 if (exitstatus & 255)
4017 STATUS_POSIX_SET(exitstatus);
4019 STATUS_POSIX_SET(255);
4026 S_my_exit_jump(pTHX)
4028 register PERL_CONTEXT *cx;
4033 SvREFCNT_dec(PL_e_script);
4034 PL_e_script = Nullsv;
4037 POPSTACK_TO(PL_mainstack);
4038 if (cxstack_ix >= 0) {
4041 POPBLOCK(cx,PL_curpm);
4049 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen)
4052 p = SvPVX(PL_e_script);
4053 nl = strchr(p, '\n');
4054 nl = (nl) ? nl+1 : SvEND(PL_e_script);
4056 filter_del(read_e_script);
4059 sv_catpvn(buf_sv, p, nl-p);
4060 sv_chop(PL_e_script, nl);