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);
276 /* Note that strtab is a rather special HV. Assumptions are made
277 about not iterating on it, and not adding tie magic to it.
278 It is properly deallocated in perl_destruct() */
281 #ifdef USE_5005THREADS
282 MUTEX_INIT(&PL_strtab_mutex);
284 HvSHAREKEYS_off(PL_strtab); /* mandatory */
285 hv_ksplit(PL_strtab, 512);
287 #if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
288 _dyld_lookup_and_bind
289 ("__environ", (unsigned long *) &environ_pointer, NULL);
292 #ifdef USE_ENVIRON_ARRAY
293 PL_origenviron = environ;
300 =for apidoc perl_destruct
302 Shuts down a Perl interpreter. See L<perlembed>.
310 volatile int destruct_level; /* 0=none, 1=full, 2=full with checks */
312 #ifdef USE_5005THREADS
315 #endif /* USE_5005THREADS */
317 /* wait for all pseudo-forked children to finish */
318 PERL_WAIT_FOR_CHILDREN;
320 #ifdef USE_5005THREADS
322 /* Pass 1 on any remaining threads: detach joinables, join zombies */
324 MUTEX_LOCK(&PL_threads_mutex);
325 DEBUG_S(PerlIO_printf(Perl_debug_log,
326 "perl_destruct: waiting for %d threads...\n",
328 for (t = thr->next; t != thr; t = t->next) {
329 MUTEX_LOCK(&t->mutex);
330 switch (ThrSTATE(t)) {
333 DEBUG_S(PerlIO_printf(Perl_debug_log,
334 "perl_destruct: joining zombie %p\n", t));
335 ThrSETSTATE(t, THRf_DEAD);
336 MUTEX_UNLOCK(&t->mutex);
339 * The SvREFCNT_dec below may take a long time (e.g. av
340 * may contain an object scalar whose destructor gets
341 * called) so we have to unlock threads_mutex and start
344 MUTEX_UNLOCK(&PL_threads_mutex);
346 SvREFCNT_dec((SV*)av);
347 DEBUG_S(PerlIO_printf(Perl_debug_log,
348 "perl_destruct: joined zombie %p OK\n", t));
350 case THRf_R_JOINABLE:
351 DEBUG_S(PerlIO_printf(Perl_debug_log,
352 "perl_destruct: detaching thread %p\n", t));
353 ThrSETSTATE(t, THRf_R_DETACHED);
355 * We unlock threads_mutex and t->mutex in the opposite order
356 * from which we locked them just so that DETACH won't
357 * deadlock if it panics. It's only a breach of good style
358 * not a bug since they are unlocks not locks.
360 MUTEX_UNLOCK(&PL_threads_mutex);
362 MUTEX_UNLOCK(&t->mutex);
365 DEBUG_S(PerlIO_printf(Perl_debug_log,
366 "perl_destruct: ignoring %p (state %u)\n",
368 MUTEX_UNLOCK(&t->mutex);
369 /* fall through and out */
372 /* We leave the above "Pass 1" loop with threads_mutex still locked */
374 /* Pass 2 on remaining threads: wait for the thread count to drop to one */
375 while (PL_nthreads > 1)
377 DEBUG_S(PerlIO_printf(Perl_debug_log,
378 "perl_destruct: final wait for %d threads\n",
380 COND_WAIT(&PL_nthreads_cond, &PL_threads_mutex);
382 /* At this point, we're the last thread */
383 MUTEX_UNLOCK(&PL_threads_mutex);
384 DEBUG_S(PerlIO_printf(Perl_debug_log, "perl_destruct: armageddon has arrived\n"));
385 MUTEX_DESTROY(&PL_threads_mutex);
386 COND_DESTROY(&PL_nthreads_cond);
388 #endif /* !defined(FAKE_THREADS) */
389 #endif /* USE_5005THREADS */
391 destruct_level = PL_perl_destruct_level;
395 if ((s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL"))) {
397 if (destruct_level < i)
404 if(PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
409 if (PL_endav && !PL_minus_c)
410 call_list(PL_scopestack_ix, PL_endav);
416 /* We must account for everything. */
418 /* Destroy the main CV and syntax tree */
420 PL_curpad = AvARRAY(PL_comppad);
421 op_free(PL_main_root);
422 PL_main_root = Nullop;
424 PL_curcop = &PL_compiling;
425 PL_main_start = Nullop;
426 SvREFCNT_dec(PL_main_cv);
430 /* Tell PerlIO we are about to tear things apart in case
431 we have layers which are using resources that should
435 PerlIO_destruct(aTHX);
437 if (PL_sv_objcount) {
439 * Try to destruct global references. We do this first so that the
440 * destructors and destructees still exist. Some sv's might remain.
441 * Non-referenced objects are on their own.
446 /* unhook hooks which will soon be, or use, destroyed data */
447 SvREFCNT_dec(PL_warnhook);
448 PL_warnhook = Nullsv;
449 SvREFCNT_dec(PL_diehook);
452 /* call exit list functions */
453 while (PL_exitlistlen-- > 0)
454 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
456 Safefree(PL_exitlist);
458 if (destruct_level == 0){
460 DEBUG_P(debprofdump());
462 #if defined(PERLIO_LAYERS)
463 /* No more IO - including error messages ! */
464 PerlIO_cleanup(aTHX);
467 /* The exit() function will do everything that needs doing. */
468 return STATUS_NATIVE_EXPORT;;
471 /* jettison our possibly duplicated environment */
472 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
473 * so we certainly shouldn't free it here
475 #if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
476 if (environ != PL_origenviron) {
479 for (i = 0; environ[i]; i++)
480 safesysfree(environ[i]);
482 /* Must use safesysfree() when working with environ. */
483 safesysfree(environ);
485 environ = PL_origenviron;
490 /* the syntax tree is shared between clones
491 * so op_free(PL_main_root) only ReREFCNT_dec's
492 * REGEXPs in the parent interpreter
493 * we need to manually ReREFCNT_dec for the clones
496 I32 i = AvFILLp(PL_regex_padav) + 1;
497 SV **ary = AvARRAY(PL_regex_padav);
501 REGEXP *re = INT2PTR(REGEXP *,SvIVX(resv));
503 if (SvFLAGS(resv) & SVf_BREAK) {
504 /* this is PL_reg_curpm, already freed
505 * flag is set in regexec.c:S_regtry
507 SvFLAGS(resv) &= ~SVf_BREAK;
509 else if(SvREPADTMP(resv)) {
510 SvREPADTMP_off(resv);
517 SvREFCNT_dec(PL_regex_padav);
518 PL_regex_padav = Nullav;
522 /* loosen bonds of global variables */
525 (void)PerlIO_close(PL_rsfp);
529 /* Filters for program text */
530 SvREFCNT_dec(PL_rsfp_filters);
531 PL_rsfp_filters = Nullav;
534 PL_preprocess = FALSE;
540 PL_doswitches = FALSE;
541 PL_dowarn = G_WARN_OFF;
542 PL_doextract = FALSE;
543 PL_sawampersand = FALSE; /* must save all match strings */
546 Safefree(PL_inplace);
548 SvREFCNT_dec(PL_patchlevel);
551 SvREFCNT_dec(PL_e_script);
552 PL_e_script = Nullsv;
555 while (--PL_origargc >= 0) {
556 Safefree(PL_origargv[PL_origargc]);
558 Safefree(PL_origargv);
560 /* magical thingies */
562 SvREFCNT_dec(PL_ofs_sv); /* $, */
565 SvREFCNT_dec(PL_ors_sv); /* $\ */
568 SvREFCNT_dec(PL_rs); /* $/ */
571 PL_multiline = 0; /* $* */
572 Safefree(PL_osname); /* $^O */
575 SvREFCNT_dec(PL_statname);
576 PL_statname = Nullsv;
579 /* defgv, aka *_ should be taken care of elsewhere */
581 /* clean up after study() */
582 SvREFCNT_dec(PL_lastscream);
583 PL_lastscream = Nullsv;
584 Safefree(PL_screamfirst);
586 Safefree(PL_screamnext);
590 Safefree(PL_efloatbuf);
591 PL_efloatbuf = Nullch;
594 /* startup and shutdown function lists */
595 SvREFCNT_dec(PL_beginav);
596 SvREFCNT_dec(PL_beginav_save);
597 SvREFCNT_dec(PL_endav);
598 SvREFCNT_dec(PL_checkav);
599 SvREFCNT_dec(PL_initav);
601 PL_beginav_save = Nullav;
606 /* shortcuts just get cleared */
612 PL_argvoutgv = Nullgv;
614 PL_stderrgv = Nullgv;
615 PL_last_in_gv = Nullgv;
617 PL_debstash = Nullhv;
619 /* reset so print() ends up where we expect */
622 SvREFCNT_dec(PL_argvout_stack);
623 PL_argvout_stack = Nullav;
625 SvREFCNT_dec(PL_modglobal);
626 PL_modglobal = Nullhv;
627 SvREFCNT_dec(PL_preambleav);
628 PL_preambleav = Nullav;
629 SvREFCNT_dec(PL_subname);
631 SvREFCNT_dec(PL_linestr);
633 SvREFCNT_dec(PL_pidstatus);
634 PL_pidstatus = Nullhv;
635 SvREFCNT_dec(PL_toptarget);
636 PL_toptarget = Nullsv;
637 SvREFCNT_dec(PL_bodytarget);
638 PL_bodytarget = Nullsv;
639 PL_formtarget = Nullsv;
641 /* free locale stuff */
642 #ifdef USE_LOCALE_COLLATE
643 Safefree(PL_collation_name);
644 PL_collation_name = Nullch;
647 #ifdef USE_LOCALE_NUMERIC
648 Safefree(PL_numeric_name);
649 PL_numeric_name = Nullch;
650 SvREFCNT_dec(PL_numeric_radix_sv);
653 /* clear utf8 character classes */
654 SvREFCNT_dec(PL_utf8_alnum);
655 SvREFCNT_dec(PL_utf8_alnumc);
656 SvREFCNT_dec(PL_utf8_ascii);
657 SvREFCNT_dec(PL_utf8_alpha);
658 SvREFCNT_dec(PL_utf8_space);
659 SvREFCNT_dec(PL_utf8_cntrl);
660 SvREFCNT_dec(PL_utf8_graph);
661 SvREFCNT_dec(PL_utf8_digit);
662 SvREFCNT_dec(PL_utf8_upper);
663 SvREFCNT_dec(PL_utf8_lower);
664 SvREFCNT_dec(PL_utf8_print);
665 SvREFCNT_dec(PL_utf8_punct);
666 SvREFCNT_dec(PL_utf8_xdigit);
667 SvREFCNT_dec(PL_utf8_mark);
668 SvREFCNT_dec(PL_utf8_toupper);
669 SvREFCNT_dec(PL_utf8_totitle);
670 SvREFCNT_dec(PL_utf8_tolower);
671 SvREFCNT_dec(PL_utf8_tofold);
672 PL_utf8_alnum = Nullsv;
673 PL_utf8_alnumc = Nullsv;
674 PL_utf8_ascii = Nullsv;
675 PL_utf8_alpha = Nullsv;
676 PL_utf8_space = Nullsv;
677 PL_utf8_cntrl = Nullsv;
678 PL_utf8_graph = Nullsv;
679 PL_utf8_digit = Nullsv;
680 PL_utf8_upper = Nullsv;
681 PL_utf8_lower = Nullsv;
682 PL_utf8_print = Nullsv;
683 PL_utf8_punct = Nullsv;
684 PL_utf8_xdigit = Nullsv;
685 PL_utf8_mark = Nullsv;
686 PL_utf8_toupper = Nullsv;
687 PL_utf8_totitle = Nullsv;
688 PL_utf8_tolower = Nullsv;
689 PL_utf8_tofold = Nullsv;
691 if (!specialWARN(PL_compiling.cop_warnings))
692 SvREFCNT_dec(PL_compiling.cop_warnings);
693 PL_compiling.cop_warnings = Nullsv;
694 if (!specialCopIO(PL_compiling.cop_io))
695 SvREFCNT_dec(PL_compiling.cop_io);
696 PL_compiling.cop_io = Nullsv;
698 Safefree(CopFILE(&PL_compiling));
699 CopFILE(&PL_compiling) = Nullch;
700 Safefree(CopSTASHPV(&PL_compiling));
702 SvREFCNT_dec(CopFILEGV(&PL_compiling));
703 CopFILEGV(&PL_compiling) = Nullgv;
704 /* cop_stash is not refcounted */
707 /* Prepare to destruct main symbol table. */
712 SvREFCNT_dec(PL_curstname);
713 PL_curstname = Nullsv;
715 /* clear queued errors */
716 SvREFCNT_dec(PL_errors);
720 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
721 if (PL_scopestack_ix != 0)
722 Perl_warner(aTHX_ WARN_INTERNAL,
723 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
724 (long)PL_scopestack_ix);
725 if (PL_savestack_ix != 0)
726 Perl_warner(aTHX_ WARN_INTERNAL,
727 "Unbalanced saves: %ld more saves than restores\n",
728 (long)PL_savestack_ix);
729 if (PL_tmps_floor != -1)
730 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced tmps: %ld more allocs than frees\n",
731 (long)PL_tmps_floor + 1);
732 if (cxstack_ix != -1)
733 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced context: %ld more PUSHes than POPs\n",
734 (long)cxstack_ix + 1);
737 /* Now absolutely destruct everything, somehow or other, loops or no. */
738 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
739 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
741 /* the 2 is for PL_fdpid and PL_strtab */
742 while (PL_sv_count > 2 && sv_clean_all())
745 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
746 SvFLAGS(PL_fdpid) |= SVt_PVAV;
747 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
748 SvFLAGS(PL_strtab) |= SVt_PVHV;
750 AvREAL_off(PL_fdpid); /* no surviving entries */
751 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
754 #ifdef HAVE_INTERP_INTERN
758 /* Destruct the global string table. */
760 /* Yell and reset the HeVAL() slots that are still holding refcounts,
761 * so that sv_free() won't fail on them.
769 max = HvMAX(PL_strtab);
770 array = HvARRAY(PL_strtab);
773 if (hent && ckWARN_d(WARN_INTERNAL)) {
774 Perl_warner(aTHX_ WARN_INTERNAL,
775 "Unbalanced string table refcount: (%d) for \"%s\"",
776 HeVAL(hent) - Nullsv, HeKEY(hent));
777 HeVAL(hent) = Nullsv;
787 SvREFCNT_dec(PL_strtab);
790 /* free the pointer table used for cloning */
791 ptr_table_free(PL_ptr_table);
794 /* free special SVs */
796 SvREFCNT(&PL_sv_yes) = 0;
797 sv_clear(&PL_sv_yes);
798 SvANY(&PL_sv_yes) = NULL;
799 SvFLAGS(&PL_sv_yes) = 0;
801 SvREFCNT(&PL_sv_no) = 0;
803 SvANY(&PL_sv_no) = NULL;
804 SvFLAGS(&PL_sv_no) = 0;
806 SvREFCNT(&PL_sv_undef) = 0;
807 SvREADONLY_off(&PL_sv_undef);
809 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
810 Perl_warner(aTHX_ WARN_INTERNAL,"Scalars leaked: %ld\n", (long)PL_sv_count);
812 #if defined(PERLIO_LAYERS)
813 /* No more IO - including error messages ! */
814 PerlIO_cleanup(aTHX);
817 Safefree(PL_origfilename);
818 Safefree(PL_reg_start_tmp);
820 Safefree(PL_reg_curpm);
821 Safefree(PL_reg_poscache);
822 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
823 Safefree(PL_op_mask);
824 Safefree(PL_psig_ptr);
825 Safefree(PL_psig_name);
826 Safefree(PL_bitcount);
827 Safefree(PL_psig_pend);
829 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
831 DEBUG_P(debprofdump());
832 #ifdef USE_5005THREADS
833 MUTEX_DESTROY(&PL_strtab_mutex);
834 MUTEX_DESTROY(&PL_sv_mutex);
835 MUTEX_DESTROY(&PL_eval_mutex);
836 MUTEX_DESTROY(&PL_cred_mutex);
837 MUTEX_DESTROY(&PL_fdpid_mutex);
838 COND_DESTROY(&PL_eval_cond);
839 #ifdef EMULATE_ATOMIC_REFCOUNTS
840 MUTEX_DESTROY(&PL_svref_mutex);
841 #endif /* EMULATE_ATOMIC_REFCOUNTS */
843 /* As the penultimate thing, free the non-arena SV for thrsv */
844 Safefree(SvPVX(PL_thrsv));
845 Safefree(SvANY(PL_thrsv));
848 #endif /* USE_5005THREADS */
850 #ifdef USE_REENTRANT_API
851 Safefree(PL_reentrant_buffer->tmbuff);
852 Safefree(PL_reentrant_buffer);
857 /* As the absolutely last thing, free the non-arena SV for mess() */
860 /* it could have accumulated taint magic */
861 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
864 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
865 moremagic = mg->mg_moremagic;
866 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
868 Safefree(mg->mg_ptr);
872 /* we know that type >= SVt_PV */
873 (void)SvOOK_off(PL_mess_sv);
874 Safefree(SvPVX(PL_mess_sv));
875 Safefree(SvANY(PL_mess_sv));
876 Safefree(PL_mess_sv);
879 return STATUS_NATIVE_EXPORT;
883 =for apidoc perl_free
885 Releases a Perl interpreter. See L<perlembed>.
893 #if defined(WIN32) || defined(NETWARE)
894 # if defined(PERL_IMPLICIT_SYS)
896 void *host = nw_internal_host;
898 void *host = w32_internal_host;
902 nw5_delete_internal_host(host);
904 win32_delete_internal_host(host);
915 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
917 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
918 PL_exitlist[PL_exitlistlen].fn = fn;
919 PL_exitlist[PL_exitlistlen].ptr = ptr;
924 =for apidoc perl_parse
926 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
932 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
937 #ifdef USE_5005THREADS
941 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
944 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
945 setuid perl scripts securely.\n");
951 /* we copy rather than point to argv
952 * since perl_clone will copy and perl_destruct
953 * has no way of knowing if we've made a copy or
957 New(0, PL_origargv, i+1, char*);
958 PL_origargv[i] = '\0';
960 PL_origargv[i] = savepv(argv[i]);
968 /* Come here if running an undumped a.out. */
970 PL_origfilename = savepv(argv[0]);
971 PL_do_undump = FALSE;
972 cxstack_ix = -1; /* start label stack again */
974 init_postdump_symbols(argc,argv,env);
979 PL_curpad = AvARRAY(PL_comppad);
980 op_free(PL_main_root);
981 PL_main_root = Nullop;
983 PL_main_start = Nullop;
984 SvREFCNT_dec(PL_main_cv);
988 oldscope = PL_scopestack_ix;
989 PL_dowarn = G_WARN_OFF;
991 #ifdef PERL_FLEXIBLE_EXCEPTIONS
992 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
998 #ifndef PERL_FLEXIBLE_EXCEPTIONS
999 parse_body(env,xsinit);
1002 call_list(oldscope, PL_checkav);
1009 /* my_exit() was called */
1010 while (PL_scopestack_ix > oldscope)
1013 PL_curstash = PL_defstash;
1015 call_list(oldscope, PL_checkav);
1016 ret = STATUS_NATIVE_EXPORT;
1019 PerlIO_printf(Perl_error_log, "panic: top_env\n");
1027 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1029 S_vparse_body(pTHX_ va_list args)
1031 char **env = va_arg(args, char**);
1032 XSINIT_t xsinit = va_arg(args, XSINIT_t);
1034 return parse_body(env, xsinit);
1039 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
1041 int argc = PL_origargc;
1042 char **argv = PL_origargv;
1043 char *scriptname = NULL;
1045 VOL bool dosearch = FALSE;
1046 char *validarg = "";
1050 char *cddir = Nullch;
1052 sv_setpvn(PL_linestr,"",0);
1053 sv = newSVpvn("",0); /* first used for -I flags */
1057 for (argc--,argv++; argc > 0; argc--,argv++) {
1058 if (argv[0][0] != '-' || !argv[0][1])
1062 validarg = " PHOOEY ";
1071 win32_argv2utf8(argc-1, argv+1);
1074 #ifndef PERL_STRICT_CR
1098 if ((s = moreswitches(s)))
1108 #ifdef MACOS_TRADITIONAL
1109 /* ignore -e for Dev:Pseudo argument */
1110 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
1113 if (PL_euid != PL_uid || PL_egid != PL_gid)
1114 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
1116 PL_e_script = newSVpvn("",0);
1117 filter_add(read_e_script, NULL);
1120 sv_catpv(PL_e_script, s);
1122 sv_catpv(PL_e_script, argv[1]);
1126 Perl_croak(aTHX_ "No code specified for -e");
1127 sv_catpv(PL_e_script, "\n");
1130 case 'I': /* -I handled both here and in moreswitches() */
1132 if (!*++s && (s=argv[1]) != Nullch) {
1137 STRLEN len = strlen(s);
1138 p = savepvn(s, len);
1139 incpush(p, TRUE, TRUE);
1140 sv_catpvn(sv, "-I", 2);
1141 sv_catpvn(sv, p, len);
1142 sv_catpvn(sv, " ", 1);
1146 Perl_croak(aTHX_ "No directory specified for -I");
1150 PL_preprocess = TRUE;
1160 PL_preambleav = newAV();
1161 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
1163 PL_Sv = newSVpv("print myconfig();",0);
1165 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
1167 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
1169 sv_catpv(PL_Sv,"\" Compile-time options:");
1171 sv_catpv(PL_Sv," DEBUGGING");
1173 # ifdef MULTIPLICITY
1174 sv_catpv(PL_Sv," MULTIPLICITY");
1176 # ifdef USE_5005THREADS
1177 sv_catpv(PL_Sv," USE_5005THREADS");
1179 # ifdef USE_ITHREADS
1180 sv_catpv(PL_Sv," USE_ITHREADS");
1182 # ifdef USE_64_BIT_INT
1183 sv_catpv(PL_Sv," USE_64_BIT_INT");
1185 # ifdef USE_64_BIT_ALL
1186 sv_catpv(PL_Sv," USE_64_BIT_ALL");
1188 # ifdef USE_LONG_DOUBLE
1189 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1191 # ifdef USE_LARGE_FILES
1192 sv_catpv(PL_Sv," USE_LARGE_FILES");
1195 sv_catpv(PL_Sv," USE_SOCKS");
1197 # ifdef PERL_IMPLICIT_CONTEXT
1198 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1200 # ifdef PERL_IMPLICIT_SYS
1201 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1203 sv_catpv(PL_Sv,"\\n\",");
1205 #if defined(LOCAL_PATCH_COUNT)
1206 if (LOCAL_PATCH_COUNT > 0) {
1208 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
1209 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1210 if (PL_localpatches[i])
1211 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
1215 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
1218 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
1220 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
1223 sv_catpv(PL_Sv, "; \
1225 @env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; ");
1228 push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
1231 print \" \\%ENV:\\n @env\\n\" if @env; \
1232 print \" \\@INC:\\n @INC\\n\";");
1235 PL_Sv = newSVpv("config_vars(qw(",0);
1236 sv_catpv(PL_Sv, ++s);
1237 sv_catpv(PL_Sv, "))");
1240 av_push(PL_preambleav, PL_Sv);
1241 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1244 PL_doextract = TRUE;
1252 if (!*++s || isSPACE(*s)) {
1256 /* catch use of gnu style long options */
1257 if (strEQ(s, "version")) {
1261 if (strEQ(s, "help")) {
1268 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1274 #ifndef SECURE_INTERNAL_GETENV
1277 (s = PerlEnv_getenv("PERL5OPT")))
1282 if (*s == '-' && *(s+1) == 'T')
1285 char *popt_copy = Nullch;
1298 if (!strchr("DIMUdmw", *s))
1299 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
1303 popt_copy = SvPVX(sv_2mortal(newSVpv(popt,0)));
1304 s = popt_copy + (s - popt);
1305 d = popt_copy + (d - popt);
1317 scriptname = argv[0];
1320 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1322 else if (scriptname == Nullch) {
1324 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1332 open_script(scriptname,dosearch,sv,&fdscript);
1334 validate_suid(validarg, scriptname,fdscript);
1337 #if defined(SIGCHLD) || defined(SIGCLD)
1340 # define SIGCHLD SIGCLD
1342 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1343 if (sigstate == SIG_IGN) {
1344 if (ckWARN(WARN_SIGNAL))
1345 Perl_warner(aTHX_ WARN_SIGNAL,
1346 "Can't ignore signal CHLD, forcing to default");
1347 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1353 #ifdef MACOS_TRADITIONAL
1354 if (PL_doextract || gMacPerl_AlwaysExtract) {
1359 if (cddir && PerlDir_chdir(cddir) < 0)
1360 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1364 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1365 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1366 CvUNIQUE_on(PL_compcv);
1368 PL_comppad = newAV();
1369 av_push(PL_comppad, Nullsv);
1370 PL_curpad = AvARRAY(PL_comppad);
1371 PL_comppad_name = newAV();
1372 PL_comppad_name_fill = 0;
1373 PL_min_intro_pending = 0;
1375 #ifdef USE_5005THREADS
1376 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
1377 PL_curpad[0] = (SV*)newAV();
1378 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1379 CvOWNER(PL_compcv) = 0;
1380 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1381 MUTEX_INIT(CvMUTEXP(PL_compcv));
1382 #endif /* USE_5005THREADS */
1384 comppadlist = newAV();
1385 AvREAL_off(comppadlist);
1386 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1387 av_store(comppadlist, 1, (SV*)PL_comppad);
1388 CvPADLIST(PL_compcv) = comppadlist;
1391 boot_core_UNIVERSAL();
1393 boot_core_xsutils();
1397 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
1399 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
1405 # ifdef HAS_SOCKS5_INIT
1406 socks5_init(argv[0]);
1412 init_predump_symbols();
1413 /* init_postdump_symbols not currently designed to be called */
1414 /* more than once (ENV isn't cleared first, for example) */
1415 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
1417 init_postdump_symbols(argc,argv,env);
1421 /* now parse the script */
1423 SETERRNO(0,SS$_NORMAL);
1425 #ifdef MACOS_TRADITIONAL
1426 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1428 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1430 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1431 MacPerl_MPWFileName(PL_origfilename));
1435 if (yyparse() || PL_error_count) {
1437 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
1439 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1444 CopLINE_set(PL_curcop, 0);
1445 PL_curstash = PL_defstash;
1446 PL_preprocess = FALSE;
1448 SvREFCNT_dec(PL_e_script);
1449 PL_e_script = Nullsv;
1453 Not sure that this is still the right place to do this now that we
1454 no longer use PL_nrs. HVDS 2001/09/09
1456 sv_setsv(get_sv("/", TRUE), PL_rs);
1462 SAVECOPFILE(PL_curcop);
1463 SAVECOPLINE(PL_curcop);
1464 gv_check(PL_defstash);
1471 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1472 dump_mstats("after compilation:");
1481 =for apidoc perl_run
1483 Tells a Perl interpreter to run. See L<perlembed>.
1494 #ifdef USE_5005THREADS
1498 oldscope = PL_scopestack_ix;
1503 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1505 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1511 cxstack_ix = -1; /* start context stack again */
1513 case 0: /* normal completion */
1514 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1519 case 2: /* my_exit() */
1520 while (PL_scopestack_ix > oldscope)
1523 PL_curstash = PL_defstash;
1524 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
1525 PL_endav && !PL_minus_c)
1526 call_list(oldscope, PL_endav);
1528 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1529 dump_mstats("after execution: ");
1531 ret = STATUS_NATIVE_EXPORT;
1535 POPSTACK_TO(PL_mainstack);
1538 PerlIO_printf(Perl_error_log, "panic: restartop\n");
1548 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1550 S_vrun_body(pTHX_ va_list args)
1552 I32 oldscope = va_arg(args, I32);
1554 return run_body(oldscope);
1560 S_run_body(pTHX_ I32 oldscope)
1562 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
1563 PL_sawampersand ? "Enabling" : "Omitting"));
1565 if (!PL_restartop) {
1566 DEBUG_x(dump_all());
1567 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
1568 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1572 #ifdef MACOS_TRADITIONAL
1573 PerlIO_printf(Perl_error_log, "# %s syntax OK\n", MacPerl_MPWFileName(PL_origfilename));
1575 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
1579 if (PERLDB_SINGLE && PL_DBsingle)
1580 sv_setiv(PL_DBsingle, 1);
1582 call_list(oldscope, PL_initav);
1588 PL_op = PL_restartop;
1592 else if (PL_main_start) {
1593 CvDEPTH(PL_main_cv) = 1;
1594 PL_op = PL_main_start;
1604 =for apidoc p||get_sv
1606 Returns the SV of the specified Perl scalar. If C<create> is set and the
1607 Perl variable does not exist then it will be created. If C<create> is not
1608 set and the variable does not exist then NULL is returned.
1614 Perl_get_sv(pTHX_ const char *name, I32 create)
1617 #ifdef USE_5005THREADS
1618 if (name[1] == '\0' && !isALPHA(name[0])) {
1619 PADOFFSET tmp = find_threadsv(name);
1620 if (tmp != NOT_IN_PAD)
1621 return THREADSV(tmp);
1623 #endif /* USE_5005THREADS */
1624 gv = gv_fetchpv(name, create, SVt_PV);
1631 =for apidoc p||get_av
1633 Returns the AV of the specified Perl array. If C<create> is set and the
1634 Perl variable does not exist then it will be created. If C<create> is not
1635 set and the variable does not exist then NULL is returned.
1641 Perl_get_av(pTHX_ const char *name, I32 create)
1643 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1652 =for apidoc p||get_hv
1654 Returns the HV of the specified Perl hash. If C<create> is set and the
1655 Perl variable does not exist then it will be created. If C<create> is not
1656 set and the variable does not exist then NULL is returned.
1662 Perl_get_hv(pTHX_ const char *name, I32 create)
1664 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1673 =for apidoc p||get_cv
1675 Returns the CV of the specified Perl subroutine. If C<create> is set and
1676 the Perl subroutine does not exist then it will be declared (which has the
1677 same effect as saying C<sub name;>). If C<create> is not set and the
1678 subroutine does not exist then NULL is returned.
1684 Perl_get_cv(pTHX_ const char *name, I32 create)
1686 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
1687 /* XXX unsafe for threads if eval_owner isn't held */
1688 /* XXX this is probably not what they think they're getting.
1689 * It has the same effect as "sub name;", i.e. just a forward
1691 if (create && !GvCVu(gv))
1692 return newSUB(start_subparse(FALSE, 0),
1693 newSVOP(OP_CONST, 0, newSVpv(name,0)),
1701 /* Be sure to refetch the stack pointer after calling these routines. */
1704 =for apidoc p||call_argv
1706 Performs a callback to the specified Perl sub. See L<perlcall>.
1712 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
1714 /* See G_* flags in cop.h */
1715 /* null terminated arg list */
1722 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
1727 return call_pv(sub_name, flags);
1731 =for apidoc p||call_pv
1733 Performs a callback to the specified Perl sub. See L<perlcall>.
1739 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
1740 /* name of the subroutine */
1741 /* See G_* flags in cop.h */
1743 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
1747 =for apidoc p||call_method
1749 Performs a callback to the specified Perl method. The blessed object must
1750 be on the stack. See L<perlcall>.
1756 Perl_call_method(pTHX_ const char *methname, I32 flags)
1757 /* name of the subroutine */
1758 /* See G_* flags in cop.h */
1760 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
1763 /* May be called with any of a CV, a GV, or an SV containing the name. */
1765 =for apidoc p||call_sv
1767 Performs a callback to the Perl sub whose name is in the SV. See
1774 Perl_call_sv(pTHX_ SV *sv, I32 flags)
1775 /* See G_* flags in cop.h */
1778 LOGOP myop; /* fake syntax tree node */
1781 volatile I32 retval = 0;
1783 bool oldcatch = CATCH_GET;
1788 if (flags & G_DISCARD) {
1793 Zero(&myop, 1, LOGOP);
1794 myop.op_next = Nullop;
1795 if (!(flags & G_NOARGS))
1796 myop.op_flags |= OPf_STACKED;
1797 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1798 (flags & G_ARRAY) ? OPf_WANT_LIST :
1803 EXTEND(PL_stack_sp, 1);
1804 *++PL_stack_sp = sv;
1806 oldscope = PL_scopestack_ix;
1808 if (PERLDB_SUB && PL_curstash != PL_debstash
1809 /* Handle first BEGIN of -d. */
1810 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
1811 /* Try harder, since this may have been a sighandler, thus
1812 * curstash may be meaningless. */
1813 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
1814 && !(flags & G_NODEBUG))
1815 PL_op->op_private |= OPpENTERSUB_DB;
1817 if (flags & G_METHOD) {
1818 Zero(&method_op, 1, UNOP);
1819 method_op.op_next = PL_op;
1820 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1821 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
1822 PL_op = (OP*)&method_op;
1825 if (!(flags & G_EVAL)) {
1827 call_body((OP*)&myop, FALSE);
1828 retval = PL_stack_sp - (PL_stack_base + oldmark);
1829 CATCH_SET(oldcatch);
1832 myop.op_other = (OP*)&myop;
1834 /* we're trying to emulate pp_entertry() here */
1836 register PERL_CONTEXT *cx;
1837 I32 gimme = GIMME_V;
1842 push_return(Nullop);
1843 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
1845 PL_eval_root = PL_op; /* Only needed so that goto works right. */
1847 PL_in_eval = EVAL_INEVAL;
1848 if (flags & G_KEEPERR)
1849 PL_in_eval |= EVAL_KEEPERR;
1855 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1857 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1864 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1866 call_body((OP*)&myop, FALSE);
1868 retval = PL_stack_sp - (PL_stack_base + oldmark);
1869 if (!(flags & G_KEEPERR))
1876 /* my_exit() was called */
1877 PL_curstash = PL_defstash;
1880 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1881 Perl_croak(aTHX_ "Callback called exit");
1886 PL_op = PL_restartop;
1890 PL_stack_sp = PL_stack_base + oldmark;
1891 if (flags & G_ARRAY)
1895 *++PL_stack_sp = &PL_sv_undef;
1900 if (PL_scopestack_ix > oldscope) {
1904 register PERL_CONTEXT *cx;
1916 if (flags & G_DISCARD) {
1917 PL_stack_sp = PL_stack_base + oldmark;
1926 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1928 S_vcall_body(pTHX_ va_list args)
1930 OP *myop = va_arg(args, OP*);
1931 int is_eval = va_arg(args, int);
1933 call_body(myop, is_eval);
1939 S_call_body(pTHX_ OP *myop, int is_eval)
1941 if (PL_op == myop) {
1943 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
1945 PL_op = Perl_pp_entersub(aTHX); /* this does */
1951 /* Eval a string. The G_EVAL flag is always assumed. */
1954 =for apidoc p||eval_sv
1956 Tells Perl to C<eval> the string in the SV.
1962 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
1964 /* See G_* flags in cop.h */
1967 UNOP myop; /* fake syntax tree node */
1968 volatile I32 oldmark = SP - PL_stack_base;
1969 volatile I32 retval = 0;
1975 if (flags & G_DISCARD) {
1982 Zero(PL_op, 1, UNOP);
1983 EXTEND(PL_stack_sp, 1);
1984 *++PL_stack_sp = sv;
1985 oldscope = PL_scopestack_ix;
1987 if (!(flags & G_NOARGS))
1988 myop.op_flags = OPf_STACKED;
1989 myop.op_next = Nullop;
1990 myop.op_type = OP_ENTEREVAL;
1991 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1992 (flags & G_ARRAY) ? OPf_WANT_LIST :
1994 if (flags & G_KEEPERR)
1995 myop.op_flags |= OPf_SPECIAL;
1997 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1999 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
2006 #ifndef PERL_FLEXIBLE_EXCEPTIONS
2008 call_body((OP*)&myop,TRUE);
2010 retval = PL_stack_sp - (PL_stack_base + oldmark);
2011 if (!(flags & G_KEEPERR))
2018 /* my_exit() was called */
2019 PL_curstash = PL_defstash;
2022 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
2023 Perl_croak(aTHX_ "Callback called exit");
2028 PL_op = PL_restartop;
2032 PL_stack_sp = PL_stack_base + oldmark;
2033 if (flags & G_ARRAY)
2037 *++PL_stack_sp = &PL_sv_undef;
2043 if (flags & G_DISCARD) {
2044 PL_stack_sp = PL_stack_base + oldmark;
2054 =for apidoc p||eval_pv
2056 Tells Perl to C<eval> the given string and return an SV* result.
2062 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
2065 SV* sv = newSVpv(p, 0);
2067 eval_sv(sv, G_SCALAR);
2074 if (croak_on_error && SvTRUE(ERRSV)) {
2076 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
2082 /* Require a module. */
2085 =for apidoc p||require_pv
2087 Tells Perl to C<require> the file named by the string argument. It is
2088 analogous to the Perl code C<eval "require '$file'">. It's even
2089 implemented that way; consider using Perl_load_module instead.
2094 Perl_require_pv(pTHX_ const char *pv)
2098 PUSHSTACKi(PERLSI_REQUIRE);
2100 sv = sv_newmortal();
2101 sv_setpv(sv, "require '");
2104 eval_sv(sv, G_DISCARD);
2110 Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
2114 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
2115 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
2119 S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
2121 /* This message really ought to be max 23 lines.
2122 * Removed -h because the user already knows that option. Others? */
2124 static char *usage_msg[] = {
2125 "-0[octal] specify record separator (\\0, if no argument)",
2126 "-a autosplit mode with -n or -p (splits $_ into @F)",
2127 "-C enable native wide character system interfaces",
2128 "-c check syntax only (runs BEGIN and CHECK blocks)",
2129 "-d[:debugger] run program under debugger",
2130 "-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2131 "-e 'command' one line of program (several -e's allowed, omit programfile)",
2132 "-F/pattern/ split() pattern for -a switch (//'s are optional)",
2133 "-i[extension] edit <> files in place (makes backup if extension supplied)",
2134 "-Idirectory specify @INC/#include directory (several -I's allowed)",
2135 "-l[octal] enable line ending processing, specifies line terminator",
2136 "-[mM][-]module execute `use/no module...' before executing program",
2137 "-n assume 'while (<>) { ... }' loop around program",
2138 "-p assume loop like -n but print line also, like sed",
2139 "-P run program through C preprocessor before compilation",
2140 "-s enable rudimentary parsing for switches after programfile",
2141 "-S look for programfile using PATH environment variable",
2142 "-T enable tainting checks",
2143 "-u dump core after parsing program",
2144 "-U allow unsafe operations",
2145 "-v print version, subversion (includes VERY IMPORTANT perl info)",
2146 "-V[:variable] print configuration summary (or a single Config.pm variable)",
2147 "-w enable many useful warnings (RECOMMENDED)",
2148 "-W enable all warnings",
2149 "-X disable all warnings",
2150 "-x[directory] strip off text before #!perl line and perhaps cd to directory",
2154 char **p = usage_msg;
2156 PerlIO_printf(PerlIO_stdout(),
2157 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2160 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
2163 /* This routine handles any switches that can be given during run */
2166 Perl_moreswitches(pTHX_ char *s)
2176 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
2177 SvREFCNT_dec(PL_rs);
2178 if (rschar & ~((U8)~0))
2179 PL_rs = &PL_sv_undef;
2180 else if (!rschar && numlen >= 2)
2181 PL_rs = newSVpvn("", 0);
2184 PL_rs = newSVpvn(&ch, 1);
2189 PL_widesyscalls = TRUE;
2195 while (*s && !isSPACE(*s)) ++s;
2197 PL_splitstr = savepv(PL_splitstr);
2210 /* The following permits -d:Mod to accepts arguments following an =
2211 in the fashion that -MSome::Mod does. */
2212 if (*s == ':' || *s == '=') {
2215 sv = newSVpv("use Devel::", 0);
2217 /* We now allow -d:Module=Foo,Bar */
2218 while(isALNUM(*s) || *s==':') ++s;
2220 sv_catpv(sv, start);
2222 sv_catpvn(sv, start, s-start);
2223 sv_catpv(sv, " split(/,/,q{");
2228 my_setenv("PERL5DB", SvPV(sv, PL_na));
2231 PL_perldb = PERLDB_ALL;
2239 if (isALPHA(s[1])) {
2240 /* if adding extra options, remember to update DEBUG_MASK */
2241 static char debopts[] = "psltocPmfrxuLHXDSTR";
2244 for (s++; *s && (d = strchr(debopts,*s)); s++)
2245 PL_debug |= 1 << (d - debopts);
2248 PL_debug = atoi(s+1);
2249 for (s++; isDIGIT(*s); s++) ;
2251 PL_debug |= DEBUG_TOP_FLAG;
2253 if (ckWARN_d(WARN_DEBUGGING))
2254 Perl_warner(aTHX_ WARN_DEBUGGING,
2255 "Recompile perl with -DDEBUGGING to use -D switch\n");
2256 for (s++; isALNUM(*s); s++) ;
2262 usage(PL_origargv[0]);
2266 Safefree(PL_inplace);
2267 PL_inplace = savepv(s+1);
2269 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
2272 if (*s == '-') /* Additional switches on #! line. */
2276 case 'I': /* -I handled both here and in parse_body() */
2279 while (*s && isSPACE(*s))
2284 /* ignore trailing spaces (possibly followed by other switches) */
2286 for (e = p; *e && !isSPACE(*e); e++) ;
2290 } while (*p && *p != '-');
2291 e = savepvn(s, e-s);
2292 incpush(e, TRUE, TRUE);
2299 Perl_croak(aTHX_ "No directory specified for -I");
2305 SvREFCNT_dec(PL_ors_sv);
2310 PL_ors_sv = newSVpvn("\n",1);
2311 numlen = 3 + (*s == '0');
2312 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
2316 if (RsPARA(PL_rs)) {
2317 PL_ors_sv = newSVpvn("\n\n",2);
2320 PL_ors_sv = newSVsv(PL_rs);
2325 forbid_setid("-M"); /* XXX ? */
2328 forbid_setid("-m"); /* XXX ? */
2333 /* -M-foo == 'no foo' */
2334 if (*s == '-') { use = "no "; ++s; }
2335 sv = newSVpv(use,0);
2337 /* We allow -M'Module qw(Foo Bar)' */
2338 while(isALNUM(*s) || *s==':') ++s;
2340 sv_catpv(sv, start);
2341 if (*(start-1) == 'm') {
2343 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
2344 sv_catpv( sv, " ()");
2348 Perl_croak(aTHX_ "Module name required with -%c option",
2350 sv_catpvn(sv, start, s-start);
2351 sv_catpv(sv, " split(/,/,q{");
2357 PL_preambleav = newAV();
2358 av_push(PL_preambleav, sv);
2361 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
2373 PL_doswitches = TRUE;
2378 Perl_croak(aTHX_ "Too late for \"-T\" option");
2382 #ifdef MACOS_TRADITIONAL
2383 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2385 PL_do_undump = TRUE;
2394 PerlIO_printf(PerlIO_stdout(),
2395 Perl_form(aTHX_ "\nThis is perl, v%"VDf" built for %s",
2396 PL_patchlevel, ARCHNAME));
2398 /* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
2399 PerlIO_printf(PerlIO_stdout(),
2400 Perl_form(aTHX_ "\nThis is perl, version %vd\n", PL_patchlevel));
2401 PerlIO_printf(PerlIO_stdout(),
2402 Perl_form(aTHX_ " built under %s at %s %s\n",
2403 OSNAME, __DATE__, __TIME__));
2404 PerlIO_printf(PerlIO_stdout(),
2405 Perl_form(aTHX_ " OS Specific Release: %s\n",
2409 #if defined(LOCAL_PATCH_COUNT)
2410 if (LOCAL_PATCH_COUNT > 0)
2411 PerlIO_printf(PerlIO_stdout(),
2412 "\n(with %d registered patch%s, "
2413 "see perl -V for more detail)",
2414 (int)LOCAL_PATCH_COUNT,
2415 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
2418 PerlIO_printf(PerlIO_stdout(),
2419 "\n\nCopyright 1987-2001, Larry Wall\n");
2420 #ifdef MACOS_TRADITIONAL
2421 PerlIO_printf(PerlIO_stdout(),
2422 "\nMac OS port Copyright 1991-2001, Matthias Neeracher;\n"
2423 "maintained by Chris Nandor\n");
2426 PerlIO_printf(PerlIO_stdout(),
2427 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
2430 PerlIO_printf(PerlIO_stdout(),
2431 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2432 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
2435 PerlIO_printf(PerlIO_stdout(),
2436 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2437 "Version 5 port Copyright (c) 1994-1999, Andreas Kaiser, Ilya Zakharevich\n");
2440 PerlIO_printf(PerlIO_stdout(),
2441 "atariST series port, ++jrb bammi@cadence.com\n");
2444 PerlIO_printf(PerlIO_stdout(),
2445 "BeOS port Copyright Tom Spindler, 1997-1999\n");
2448 PerlIO_printf(PerlIO_stdout(),
2449 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2001\n");
2452 PerlIO_printf(PerlIO_stdout(),
2453 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
2456 PerlIO_printf(PerlIO_stdout(),
2457 "Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n");
2460 PerlIO_printf(PerlIO_stdout(),
2461 "VM/ESA port by Neale Ferguson, 1998-1999\n");
2464 PerlIO_printf(PerlIO_stdout(),
2465 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
2468 PerlIO_printf(PerlIO_stdout(),
2469 "MiNT port by Guido Flohr, 1997-1999\n");
2472 PerlIO_printf(PerlIO_stdout(),
2473 "EPOC port by Olaf Flebbe, 1999-2000\n");
2476 printf("WINCE port by Rainer Keuchel, 2001\n");
2477 printf("Built on " __DATE__ " " __TIME__ "\n\n");
2480 #ifdef BINARY_BUILD_NOTICE
2481 BINARY_BUILD_NOTICE;
2483 PerlIO_printf(PerlIO_stdout(),
2485 Perl may be copied only under the terms of either the Artistic License or the\n\
2486 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
2487 Complete documentation for Perl, including FAQ lists, should be found on\n\
2488 this system using `man perl' or `perldoc perl'. If you have access to the\n\
2489 Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
2492 if (! (PL_dowarn & G_WARN_ALL_MASK))
2493 PL_dowarn |= G_WARN_ON;
2497 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
2498 PL_compiling.cop_warnings = pWARN_ALL ;
2502 PL_dowarn = G_WARN_ALL_OFF;
2503 PL_compiling.cop_warnings = pWARN_NONE ;
2508 if (s[1] == '-') /* Additional switches on #! line. */
2513 #if defined(WIN32) || !defined(PERL_STRICT_CR)
2519 #ifdef ALTERNATE_SHEBANG
2520 case 'S': /* OS/2 needs -S on "extproc" line. */
2528 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
2533 /* compliments of Tom Christiansen */
2535 /* unexec() can be found in the Gnu emacs distribution */
2536 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
2539 Perl_my_unexec(pTHX)
2547 prog = newSVpv(BIN_EXP, 0);
2548 sv_catpv(prog, "/perl");
2549 file = newSVpv(PL_origfilename, 0);
2550 sv_catpv(file, ".perldump");
2552 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2553 /* unexec prints msg to stderr in case of failure */
2554 PerlProc_exit(status);
2557 # include <lib$routines.h>
2558 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
2560 ABORT(); /* for use with undump */
2565 /* initialize curinterp */
2571 # define PERLVAR(var,type)
2572 # define PERLVARA(var,n,type)
2573 # if defined(PERL_IMPLICIT_CONTEXT)
2574 # if defined(USE_5005THREADS)
2575 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2576 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2577 # else /* !USE_5005THREADS */
2578 # define PERLVARI(var,type,init) aTHX->var = init;
2579 # define PERLVARIC(var,type,init) aTHX->var = init;
2580 # endif /* USE_5005THREADS */
2582 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2583 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2585 # include "intrpvar.h"
2586 # ifndef USE_5005THREADS
2587 # include "thrdvar.h"
2594 # define PERLVAR(var,type)
2595 # define PERLVARA(var,n,type)
2596 # define PERLVARI(var,type,init) PL_##var = init;
2597 # define PERLVARIC(var,type,init) PL_##var = init;
2598 # include "intrpvar.h"
2599 # ifndef USE_5005THREADS
2600 # include "thrdvar.h"
2611 S_init_main_stash(pTHX)
2617 PL_curstash = PL_defstash = newHV();
2618 PL_curstname = newSVpvn("main",4);
2619 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2620 SvREFCNT_dec(GvHV(gv));
2621 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
2623 HvNAME(PL_defstash) = savepv("main");
2624 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2625 GvMULTI_on(PL_incgv);
2626 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2627 GvMULTI_on(PL_hintgv);
2628 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2629 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2630 GvMULTI_on(PL_errgv);
2631 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2632 GvMULTI_on(PL_replgv);
2633 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
2634 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2635 sv_setpvn(ERRSV, "", 0);
2636 PL_curstash = PL_defstash;
2637 CopSTASH_set(&PL_compiling, PL_defstash);
2638 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
2639 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
2640 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
2641 /* We must init $/ before switches are processed. */
2642 sv_setpvn(get_sv("/", TRUE), "\n", 1);
2646 S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
2651 PL_origfilename = savepv("-e");
2654 /* if find_script() returns, it returns a malloc()-ed value */
2655 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
2657 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2658 char *s = scriptname + 8;
2659 *fdscript = atoi(s);
2663 scriptname = savepv(s + 1);
2664 Safefree(PL_origfilename);
2665 PL_origfilename = scriptname;
2671 Safefree(CopFILE(PL_curcop));
2673 SvREFCNT_dec(CopFILEGV(PL_curcop));
2675 CopFILE_set(PL_curcop, PL_origfilename);
2676 if (strEQ(PL_origfilename,"-"))
2678 if (*fdscript >= 0) {
2679 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
2680 #if defined(HAS_FCNTL) && defined(F_SETFD)
2682 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2685 else if (PL_preprocess) {
2686 char *cpp_cfg = CPPSTDIN;
2687 SV *cpp = newSVpvn("",0);
2688 SV *cmd = NEWSV(0,0);
2690 if (strEQ(cpp_cfg, "cppstdin"))
2691 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
2692 sv_catpv(cpp, cpp_cfg);
2694 sv_catpvn(sv, "-I", 2);
2695 sv_catpv(sv,PRIVLIB_EXP);
2697 DEBUG_P(PerlIO_printf(Perl_debug_log,
2698 "PL_preprocess: scriptname=\"%s\", cpp=\"%s\", sv=\"%s\", CPPMINUS=\"%s\"\n",
2699 scriptname, SvPVX (cpp), SvPVX (sv), CPPMINUS));
2700 #if defined(MSDOS) || defined(WIN32)
2701 Perl_sv_setpvf(aTHX_ cmd, "\
2702 sed %s -e \"/^[^#]/b\" \
2703 -e \"/^#[ ]*include[ ]/b\" \
2704 -e \"/^#[ ]*define[ ]/b\" \
2705 -e \"/^#[ ]*if[ ]/b\" \
2706 -e \"/^#[ ]*ifdef[ ]/b\" \
2707 -e \"/^#[ ]*ifndef[ ]/b\" \
2708 -e \"/^#[ ]*else/b\" \
2709 -e \"/^#[ ]*elif[ ]/b\" \
2710 -e \"/^#[ ]*undef[ ]/b\" \
2711 -e \"/^#[ ]*endif/b\" \
2713 %s | %"SVf" -C %"SVf" %s",
2714 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
2717 Perl_sv_setpvf(aTHX_ cmd, "\
2718 %s %s -e '/^[^#]/b' \
2719 -e '/^#[ ]*include[ ]/b' \
2720 -e '/^#[ ]*define[ ]/b' \
2721 -e '/^#[ ]*if[ ]/b' \
2722 -e '/^#[ ]*ifdef[ ]/b' \
2723 -e '/^#[ ]*ifndef[ ]/b' \
2724 -e '/^#[ ]*else/b' \
2725 -e '/^#[ ]*elif[ ]/b' \
2726 -e '/^#[ ]*undef[ ]/b' \
2727 -e '/^#[ ]*endif/b' \
2729 %s | %"SVf" %"SVf" %s",
2731 Perl_sv_setpvf(aTHX_ cmd, "\
2732 %s %s -e '/^[^#]/b' \
2733 -e '/^#[ ]*include[ ]/b' \
2734 -e '/^#[ ]*define[ ]/b' \
2735 -e '/^#[ ]*if[ ]/b' \
2736 -e '/^#[ ]*ifdef[ ]/b' \
2737 -e '/^#[ ]*ifndef[ ]/b' \
2738 -e '/^#[ ]*else/b' \
2739 -e '/^#[ ]*elif[ ]/b' \
2740 -e '/^#[ ]*undef[ ]/b' \
2741 -e '/^#[ ]*endif/b' \
2743 %s | %"SVf" -C %"SVf" %s",
2750 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
2752 scriptname, cpp, sv, CPPMINUS);
2753 PL_doextract = FALSE;
2754 #ifdef IAMSUID /* actually, this is caught earlier */
2755 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
2757 (void)seteuid(PL_uid); /* musn't stay setuid root */
2760 (void)setreuid((Uid_t)-1, PL_uid);
2762 #ifdef HAS_SETRESUID
2763 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
2765 PerlProc_setuid(PL_uid);
2769 if (PerlProc_geteuid() != PL_uid)
2770 Perl_croak(aTHX_ "Can't do seteuid!\n");
2772 #endif /* IAMSUID */
2773 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
2777 else if (!*scriptname) {
2778 forbid_setid("program input from stdin");
2779 PL_rsfp = PerlIO_stdin();
2782 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
2783 #if defined(HAS_FCNTL) && defined(F_SETFD)
2785 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2790 #ifndef IAMSUID /* in case script is not readable before setuid */
2792 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
2793 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2796 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
2797 (int)PERL_REVISION, (int)PERL_VERSION,
2798 (int)PERL_SUBVERSION), PL_origargv);
2799 Perl_croak(aTHX_ "Can't do setuid\n");
2805 Perl_croak(aTHX_ "Can't open perl script: %s\n",
2808 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
2809 CopFILE(PL_curcop), Strerror(errno));
2815 * I_SYSSTATVFS HAS_FSTATVFS
2817 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
2818 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2819 * here so that metaconfig picks them up. */
2823 S_fd_on_nosuid_fs(pTHX_ int fd)
2825 int check_okay = 0; /* able to do all the required sys/libcalls */
2826 int on_nosuid = 0; /* the fd is on a nosuid fs */
2828 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
2829 * fstatvfs() is UNIX98.
2830 * fstatfs() is 4.3 BSD.
2831 * ustat()+getmnt() is pre-4.3 BSD.
2832 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2833 * an irrelevant filesystem while trying to reach the right one.
2836 #undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2838 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2839 defined(HAS_FSTATVFS)
2840 # define FD_ON_NOSUID_CHECK_OKAY
2841 struct statvfs stfs;
2843 check_okay = fstatvfs(fd, &stfs) == 0;
2844 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
2845 # endif /* fstatvfs */
2847 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2848 defined(PERL_MOUNT_NOSUID) && \
2849 defined(HAS_FSTATFS) && \
2850 defined(HAS_STRUCT_STATFS) && \
2851 defined(HAS_STRUCT_STATFS_F_FLAGS)
2852 # define FD_ON_NOSUID_CHECK_OKAY
2855 check_okay = fstatfs(fd, &stfs) == 0;
2856 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
2857 # endif /* fstatfs */
2859 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2860 defined(PERL_MOUNT_NOSUID) && \
2861 defined(HAS_FSTAT) && \
2862 defined(HAS_USTAT) && \
2863 defined(HAS_GETMNT) && \
2864 defined(HAS_STRUCT_FS_DATA) && \
2866 # define FD_ON_NOSUID_CHECK_OKAY
2869 if (fstat(fd, &fdst) == 0) {
2871 if (ustat(fdst.st_dev, &us) == 0) {
2873 /* NOSTAT_ONE here because we're not examining fields which
2874 * vary between that case and STAT_ONE. */
2875 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
2876 size_t cmplen = sizeof(us.f_fname);
2877 if (sizeof(fsd.fd_req.path) < cmplen)
2878 cmplen = sizeof(fsd.fd_req.path);
2879 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2880 fdst.st_dev == fsd.fd_req.dev) {
2882 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2888 # endif /* fstat+ustat+getmnt */
2890 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2891 defined(HAS_GETMNTENT) && \
2892 defined(HAS_HASMNTOPT) && \
2893 defined(MNTOPT_NOSUID)
2894 # define FD_ON_NOSUID_CHECK_OKAY
2895 FILE *mtab = fopen("/etc/mtab", "r");
2896 struct mntent *entry;
2897 struct stat stb, fsb;
2899 if (mtab && (fstat(fd, &stb) == 0)) {
2900 while (entry = getmntent(mtab)) {
2901 if (stat(entry->mnt_dir, &fsb) == 0
2902 && fsb.st_dev == stb.st_dev)
2904 /* found the filesystem */
2906 if (hasmntopt(entry, MNTOPT_NOSUID))
2909 } /* A single fs may well fail its stat(). */
2914 # endif /* getmntent+hasmntopt */
2917 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
2920 #endif /* IAMSUID */
2923 S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
2929 /* do we need to emulate setuid on scripts? */
2931 /* This code is for those BSD systems that have setuid #! scripts disabled
2932 * in the kernel because of a security problem. Merely defining DOSUID
2933 * in perl will not fix that problem, but if you have disabled setuid
2934 * scripts in the kernel, this will attempt to emulate setuid and setgid
2935 * on scripts that have those now-otherwise-useless bits set. The setuid
2936 * root version must be called suidperl or sperlN.NNN. If regular perl
2937 * discovers that it has opened a setuid script, it calls suidperl with
2938 * the same argv that it had. If suidperl finds that the script it has
2939 * just opened is NOT setuid root, it sets the effective uid back to the
2940 * uid. We don't just make perl setuid root because that loses the
2941 * effective uid we had before invoking perl, if it was different from the
2944 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2945 * be defined in suidperl only. suidperl must be setuid root. The
2946 * Configure script will set this up for you if you want it.
2952 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
2953 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
2954 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
2959 #ifndef HAS_SETREUID
2960 /* On this access check to make sure the directories are readable,
2961 * there is actually a small window that the user could use to make
2962 * filename point to an accessible directory. So there is a faint
2963 * chance that someone could execute a setuid script down in a
2964 * non-accessible directory. I don't know what to do about that.
2965 * But I don't think it's too important. The manual lies when
2966 * it says access() is useful in setuid programs.
2968 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
2969 Perl_croak(aTHX_ "Permission denied");
2971 /* If we can swap euid and uid, then we can determine access rights
2972 * with a simple stat of the file, and then compare device and
2973 * inode to make sure we did stat() on the same file we opened.
2974 * Then we just have to make sure he or she can execute it.
2977 struct stat tmpstatbuf;
2981 setreuid(PL_euid,PL_uid) < 0
2984 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
2987 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
2988 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
2989 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
2990 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
2991 #if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
2992 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
2993 Perl_croak(aTHX_ "Permission denied");
2995 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
2996 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
2997 (void)PerlIO_close(PL_rsfp);
2998 Perl_croak(aTHX_ "Permission denied\n");
3002 setreuid(PL_uid,PL_euid) < 0
3004 # if defined(HAS_SETRESUID)
3005 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
3008 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
3009 Perl_croak(aTHX_ "Can't reswap uid and euid");
3010 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
3011 Perl_croak(aTHX_ "Permission denied\n");
3013 #endif /* HAS_SETREUID */
3014 #endif /* IAMSUID */
3016 if (!S_ISREG(PL_statbuf.st_mode))
3017 Perl_croak(aTHX_ "Permission denied");
3018 if (PL_statbuf.st_mode & S_IWOTH)
3019 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
3020 PL_doswitches = FALSE; /* -s is insecure in suid */
3021 CopLINE_inc(PL_curcop);
3022 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
3023 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
3024 Perl_croak(aTHX_ "No #! line");
3025 s = SvPV(PL_linestr,n_a)+2;
3027 while (!isSPACE(*s)) s++;
3028 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
3029 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
3030 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
3031 Perl_croak(aTHX_ "Not a perl script");
3032 while (*s == ' ' || *s == '\t') s++;
3034 * #! arg must be what we saw above. They can invoke it by
3035 * mentioning suidperl explicitly, but they may not add any strange
3036 * arguments beyond what #! says if they do invoke suidperl that way.
3038 len = strlen(validarg);
3039 if (strEQ(validarg," PHOOEY ") ||
3040 strnNE(s,validarg,len) || !isSPACE(s[len]))
3041 Perl_croak(aTHX_ "Args must match #! line");
3044 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
3045 PL_euid == PL_statbuf.st_uid)
3047 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3048 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3049 #endif /* IAMSUID */
3051 if (PL_euid) { /* oops, we're not the setuid root perl */
3052 (void)PerlIO_close(PL_rsfp);
3055 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
3056 (int)PERL_REVISION, (int)PERL_VERSION,
3057 (int)PERL_SUBVERSION), PL_origargv);
3059 Perl_croak(aTHX_ "Can't do setuid\n");
3062 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
3064 (void)setegid(PL_statbuf.st_gid);
3067 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
3069 #ifdef HAS_SETRESGID
3070 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
3072 PerlProc_setgid(PL_statbuf.st_gid);
3076 if (PerlProc_getegid() != PL_statbuf.st_gid)
3077 Perl_croak(aTHX_ "Can't do setegid!\n");
3079 if (PL_statbuf.st_mode & S_ISUID) {
3080 if (PL_statbuf.st_uid != PL_euid)
3082 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
3085 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
3087 #ifdef HAS_SETRESUID
3088 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
3090 PerlProc_setuid(PL_statbuf.st_uid);
3094 if (PerlProc_geteuid() != PL_statbuf.st_uid)
3095 Perl_croak(aTHX_ "Can't do seteuid!\n");
3097 else if (PL_uid) { /* oops, mustn't run as root */
3099 (void)seteuid((Uid_t)PL_uid);
3102 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
3104 #ifdef HAS_SETRESUID
3105 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
3107 PerlProc_setuid((Uid_t)PL_uid);
3111 if (PerlProc_geteuid() != PL_uid)
3112 Perl_croak(aTHX_ "Can't do seteuid!\n");
3115 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
3116 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
3119 else if (PL_preprocess)
3120 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
3121 else if (fdscript >= 0)
3122 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
3124 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
3126 /* We absolutely must clear out any saved ids here, so we */
3127 /* exec the real perl, substituting fd script for scriptname. */
3128 /* (We pass script name as "subdir" of fd, which perl will grok.) */
3129 PerlIO_rewind(PL_rsfp);
3130 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
3131 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3132 if (!PL_origargv[which])
3133 Perl_croak(aTHX_ "Permission denied");
3134 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
3135 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
3136 #if defined(HAS_FCNTL) && defined(F_SETFD)
3137 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
3139 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
3140 (int)PERL_REVISION, (int)PERL_VERSION,
3141 (int)PERL_SUBVERSION), PL_origargv);/* try again */
3142 Perl_croak(aTHX_ "Can't do setuid\n");
3143 #endif /* IAMSUID */
3145 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
3146 #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
3147 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3148 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3150 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3153 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3154 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3155 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3156 /* not set-id, must be wrapped */
3162 S_find_beginning(pTHX)
3164 register char *s, *s2;
3166 /* skip forward in input to the real script? */
3169 #ifdef MACOS_TRADITIONAL
3170 /* Since the Mac OS does not honor #! arguments for us, we do it ourselves */
3172 while (PL_doextract || gMacPerl_AlwaysExtract) {
3173 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3174 if (!gMacPerl_AlwaysExtract)
3175 Perl_croak(aTHX_ "No Perl script found in input\n");
3177 if (PL_doextract) /* require explicit override ? */
3178 if (!OverrideExtract(PL_origfilename))
3179 Perl_croak(aTHX_ "User aborted script\n");
3181 PL_doextract = FALSE;
3183 /* Pater peccavi, file does not have #! */
3184 PerlIO_rewind(PL_rsfp);
3189 while (PL_doextract) {
3190 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
3191 Perl_croak(aTHX_ "No Perl script found in input\n");
3194 if (*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))) {
3195 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3196 PL_doextract = FALSE;
3197 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3199 while (*s == ' ' || *s == '\t') s++;
3201 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3202 if (strnEQ(s2-4,"perl",4))
3204 while ((s = moreswitches(s)))
3207 #ifdef MACOS_TRADITIONAL
3218 PL_uid = PerlProc_getuid();
3219 PL_euid = PerlProc_geteuid();
3220 PL_gid = PerlProc_getgid();
3221 PL_egid = PerlProc_getegid();
3223 PL_uid |= PL_gid << 16;
3224 PL_euid |= PL_egid << 16;
3226 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3230 S_forbid_setid(pTHX_ char *s)
3232 if (PL_euid != PL_uid)
3233 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3234 if (PL_egid != PL_gid)
3235 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
3239 Perl_init_debugger(pTHX)
3241 HV *ostash = PL_curstash;
3243 PL_curstash = PL_debstash;
3244 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3245 AvREAL_off(PL_dbargs);
3246 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3247 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3248 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
3249 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3250 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
3251 sv_setiv(PL_DBsingle, 0);
3252 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
3253 sv_setiv(PL_DBtrace, 0);
3254 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
3255 sv_setiv(PL_DBsignal, 0);
3256 PL_curstash = ostash;
3259 #ifndef STRESS_REALLOC
3260 #define REASONABLE(size) (size)
3262 #define REASONABLE(size) (1) /* unreasonable */
3266 Perl_init_stacks(pTHX)
3268 /* start with 128-item stack and 8K cxstack */
3269 PL_curstackinfo = new_stackinfo(REASONABLE(128),
3270 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3271 PL_curstackinfo->si_type = PERLSI_MAIN;
3272 PL_curstack = PL_curstackinfo->si_stack;
3273 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
3275 PL_stack_base = AvARRAY(PL_curstack);
3276 PL_stack_sp = PL_stack_base;
3277 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
3279 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3282 PL_tmps_max = REASONABLE(128);
3284 New(54,PL_markstack,REASONABLE(32),I32);
3285 PL_markstack_ptr = PL_markstack;
3286 PL_markstack_max = PL_markstack + REASONABLE(32);
3290 New(54,PL_scopestack,REASONABLE(32),I32);
3291 PL_scopestack_ix = 0;
3292 PL_scopestack_max = REASONABLE(32);
3294 New(54,PL_savestack,REASONABLE(128),ANY);
3295 PL_savestack_ix = 0;
3296 PL_savestack_max = REASONABLE(128);
3298 New(54,PL_retstack,REASONABLE(16),OP*);
3300 PL_retstack_max = REASONABLE(16);
3308 while (PL_curstackinfo->si_next)
3309 PL_curstackinfo = PL_curstackinfo->si_next;
3310 while (PL_curstackinfo) {
3311 PERL_SI *p = PL_curstackinfo->si_prev;
3312 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3313 Safefree(PL_curstackinfo->si_cxstack);
3314 Safefree(PL_curstackinfo);
3315 PL_curstackinfo = p;
3317 Safefree(PL_tmps_stack);
3318 Safefree(PL_markstack);
3319 Safefree(PL_scopestack);
3320 Safefree(PL_savestack);
3321 Safefree(PL_retstack);
3330 lex_start(PL_linestr);
3332 PL_subname = newSVpvn("main",4);
3336 S_init_predump_symbols(pTHX)
3341 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3342 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3343 GvMULTI_on(PL_stdingv);
3344 io = GvIOp(PL_stdingv);
3345 IoTYPE(io) = IoTYPE_RDONLY;
3346 IoIFP(io) = PerlIO_stdin();
3347 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
3349 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3351 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
3354 IoTYPE(io) = IoTYPE_WRONLY;
3355 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
3357 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
3359 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3361 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3362 GvMULTI_on(PL_stderrgv);
3363 io = GvIOp(PL_stderrgv);
3364 IoTYPE(io) = IoTYPE_WRONLY;
3365 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
3366 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
3368 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3370 PL_statname = NEWSV(66,0); /* last filename we did stat on */
3373 Safefree(PL_osname);
3374 PL_osname = savepv(OSNAME);
3378 Perl_init_argv_symbols(pTHX_ register int argc, register char **argv)
3381 argc--,argv++; /* skip name of script */
3382 if (PL_doswitches) {
3383 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3386 if (argv[0][1] == '-' && !argv[0][2]) {
3390 if ((s = strchr(argv[0], '='))) {
3392 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
3395 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
3398 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3399 GvMULTI_on(PL_argvgv);
3400 (void)gv_AVadd(PL_argvgv);
3401 av_clear(GvAVn(PL_argvgv));
3402 for (; argc > 0; argc--,argv++) {
3403 SV *sv = newSVpv(argv[0],0);
3404 av_push(GvAVn(PL_argvgv),sv);
3405 if (PL_widesyscalls)
3406 (void)sv_utf8_decode(sv);
3412 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
3417 #ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3418 char **dup_env_base = 0;
3419 int dup_env_count = 0;
3422 PL_toptarget = NEWSV(0,0);
3423 sv_upgrade(PL_toptarget, SVt_PVFM);
3424 sv_setpvn(PL_toptarget, "", 0);
3425 PL_bodytarget = NEWSV(0,0);
3426 sv_upgrade(PL_bodytarget, SVt_PVFM);
3427 sv_setpvn(PL_bodytarget, "", 0);
3428 PL_formtarget = PL_bodytarget;
3432 init_argv_symbols(argc,argv);
3434 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
3435 #ifdef MACOS_TRADITIONAL
3436 /* $0 is not majick on a Mac */
3437 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3439 sv_setpv(GvSV(tmpgv),PL_origfilename);
3440 magicname("0", "0", 1);
3443 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV))) /* $^X */
3445 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
3447 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
3449 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
3451 GvMULTI_on(PL_envgv);
3452 hv = GvHVn(PL_envgv);
3453 hv_magic(hv, Nullgv, PERL_MAGIC_env);
3454 #ifdef USE_ENVIRON_ARRAY
3455 /* Note that if the supplied env parameter is actually a copy
3456 of the global environ then it may now point to free'd memory
3457 if the environment has been modified since. To avoid this
3458 problem we treat env==NULL as meaning 'use the default'
3463 environ[0] = Nullch;
3464 #ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3467 for (env_base = env; *env; env++)
3469 if ((dup_env_base = (char **)
3470 safesysmalloc( sizeof(char *) * (dup_env_count+1) ))) {
3472 for (env = env_base, dup_env = dup_env_base;
3475 /* With environ one needs to use safesysmalloc(). */
3476 *dup_env = safesysmalloc(strlen(*env) + 1);
3477 (void)strcpy(*dup_env, *env);
3483 #endif /* NEED_ENVIRON_DUP_FOR_MODIFY */
3485 for (; *env; env++) {
3486 if (!(s = strchr(*env,'=')))
3492 sv = newSVpv(s--,0);
3493 (void)hv_store(hv, *env, s - *env, sv, 0);
3496 #ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3499 for (dup_env = dup_env_base; *dup_env; dup_env++)
3500 safesysfree(*dup_env);
3501 safesysfree(dup_env_base);
3503 #endif /* NEED_ENVIRON_DUP_FOR_MODIFY */
3504 #endif /* USE_ENVIRON_ARRAY */
3507 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
3508 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
3512 S_init_perllib(pTHX)
3517 s = PerlEnv_getenv("PERL5LIB");
3519 incpush(s, TRUE, TRUE);
3521 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE);
3523 /* Treat PERL5?LIB as a possible search list logical name -- the
3524 * "natural" VMS idiom for a Unix path string. We allow each
3525 * element to be a set of |-separated directories for compatibility.
3529 if (my_trnlnm("PERL5LIB",buf,0))
3530 do { incpush(buf,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
3532 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE);
3536 /* Use the ~-expanded versions of APPLLIB (undocumented),
3537 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
3540 incpush(APPLLIB_EXP, TRUE, TRUE);
3544 incpush(ARCHLIB_EXP, FALSE, FALSE);
3546 #ifdef MACOS_TRADITIONAL
3548 struct stat tmpstatbuf;
3549 SV * privdir = NEWSV(55, 0);
3550 char * macperl = PerlEnv_getenv("MACPERL");
3555 Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl);
3556 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3557 incpush(SvPVX(privdir), TRUE, FALSE);
3558 Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl);
3559 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3560 incpush(SvPVX(privdir), TRUE, FALSE);
3562 SvREFCNT_dec(privdir);
3565 incpush(":", FALSE, FALSE);
3568 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
3571 incpush(PRIVLIB_EXP, TRUE, FALSE);
3573 incpush(PRIVLIB_EXP, FALSE, FALSE);
3577 /* sitearch is always relative to sitelib on Windows for
3578 * DLL-based path intuition to work correctly */
3579 # if !defined(WIN32)
3580 incpush(SITEARCH_EXP, FALSE, FALSE);
3586 incpush(SITELIB_EXP, TRUE, FALSE); /* this picks up sitearch as well */
3588 incpush(SITELIB_EXP, FALSE, FALSE);
3592 #ifdef SITELIB_STEM /* Search for version-specific dirs below here */
3593 incpush(SITELIB_STEM, FALSE, TRUE);
3596 #ifdef PERL_VENDORARCH_EXP
3597 /* vendorarch is always relative to vendorlib on Windows for
3598 * DLL-based path intuition to work correctly */
3599 # if !defined(WIN32)
3600 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE);
3604 #ifdef PERL_VENDORLIB_EXP
3606 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE); /* this picks up vendorarch as well */
3608 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE);
3612 #ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
3613 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE);
3616 #ifdef PERL_OTHERLIBDIRS
3617 incpush(PERL_OTHERLIBDIRS, TRUE, TRUE);
3621 incpush(".", FALSE, FALSE);
3622 #endif /* MACOS_TRADITIONAL */
3625 #if defined(DOSISH) || defined(EPOC)
3626 # define PERLLIB_SEP ';'
3629 # define PERLLIB_SEP '|'
3631 # if defined(MACOS_TRADITIONAL)
3632 # define PERLLIB_SEP ','
3634 # define PERLLIB_SEP ':'
3638 #ifndef PERLLIB_MANGLE
3639 # define PERLLIB_MANGLE(s,n) (s)
3643 S_incpush(pTHX_ char *p, int addsubdirs, int addoldvers)
3645 SV *subdir = Nullsv;
3650 if (addsubdirs || addoldvers) {
3651 subdir = sv_newmortal();
3654 /* Break at all separators */
3656 SV *libdir = NEWSV(55,0);
3659 /* skip any consecutive separators */
3660 while ( *p == PERLLIB_SEP ) {
3661 /* Uncomment the next line for PATH semantics */
3662 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
3666 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
3667 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
3672 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
3673 p = Nullch; /* break out */
3675 #ifdef MACOS_TRADITIONAL
3676 if (!strchr(SvPVX(libdir), ':'))
3677 sv_insert(libdir, 0, 0, ":", 1);
3678 if (SvPVX(libdir)[SvCUR(libdir)-1] != ':')
3679 sv_catpv(libdir, ":");
3683 * BEFORE pushing libdir onto @INC we may first push version- and
3684 * archname-specific sub-directories.
3686 if (addsubdirs || addoldvers) {
3687 #ifdef PERL_INC_VERSION_LIST
3688 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
3689 const char *incverlist[] = { PERL_INC_VERSION_LIST };
3690 const char **incver;
3692 struct stat tmpstatbuf;
3697 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
3699 while (unix[len-1] == '/') len--; /* Cosmetic */
3700 sv_usepvn(libdir,unix,len);
3703 PerlIO_printf(Perl_error_log,
3704 "Failed to unixify @INC element \"%s\"\n",
3708 #ifdef MACOS_TRADITIONAL
3709 #define PERL_AV_SUFFIX_FMT ""
3710 #define PERL_ARCH_FMT "%s:"
3711 #define PERL_ARCH_FMT_PATH PERL_FS_VER_FMT PERL_AV_SUFFIX_FMT
3713 #define PERL_AV_SUFFIX_FMT "/"
3714 #define PERL_ARCH_FMT "/%s"
3715 #define PERL_ARCH_FMT_PATH PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT
3717 /* .../version/archname if -d .../version/archname */
3718 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH PERL_ARCH_FMT,
3720 (int)PERL_REVISION, (int)PERL_VERSION,
3721 (int)PERL_SUBVERSION, ARCHNAME);
3722 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3723 S_ISDIR(tmpstatbuf.st_mode))
3724 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3726 /* .../version if -d .../version */
3727 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH, libdir,
3728 (int)PERL_REVISION, (int)PERL_VERSION,
3729 (int)PERL_SUBVERSION);
3730 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3731 S_ISDIR(tmpstatbuf.st_mode))
3732 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3734 /* .../archname if -d .../archname */
3735 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, ARCHNAME);
3736 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3737 S_ISDIR(tmpstatbuf.st_mode))
3738 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3741 #ifdef PERL_INC_VERSION_LIST
3743 for (incver = incverlist; *incver; incver++) {
3744 /* .../xxx if -d .../xxx */
3745 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, *incver);
3746 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3747 S_ISDIR(tmpstatbuf.st_mode))
3748 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3754 /* finally push this lib directory on the end of @INC */
3755 av_push(GvAVn(PL_incgv), libdir);
3759 #ifdef USE_5005THREADS
3760 STATIC struct perl_thread *
3761 S_init_main_thread(pTHX)
3763 #if !defined(PERL_IMPLICIT_CONTEXT)
3764 struct perl_thread *thr;
3768 Newz(53, thr, 1, struct perl_thread);
3769 PL_curcop = &PL_compiling;
3770 thr->interp = PERL_GET_INTERP;
3771 thr->cvcache = newHV();
3772 thr->threadsv = newAV();
3773 /* thr->threadsvp is set when find_threadsv is called */
3774 thr->specific = newAV();
3775 thr->flags = THRf_R_JOINABLE;
3776 MUTEX_INIT(&thr->mutex);
3777 /* Handcraft thrsv similarly to mess_sv */
3778 New(53, PL_thrsv, 1, SV);
3779 Newz(53, xpv, 1, XPV);
3780 SvFLAGS(PL_thrsv) = SVt_PV;
3781 SvANY(PL_thrsv) = (void*)xpv;
3782 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
3783 SvPVX(PL_thrsv) = (char*)thr;
3784 SvCUR_set(PL_thrsv, sizeof(thr));
3785 SvLEN_set(PL_thrsv, sizeof(thr));
3786 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
3787 thr->oursv = PL_thrsv;
3788 PL_chopset = " \n-";
3791 MUTEX_LOCK(&PL_threads_mutex);
3797 MUTEX_UNLOCK(&PL_threads_mutex);
3799 #ifdef HAVE_THREAD_INTERN
3800 Perl_init_thread_intern(thr);
3803 #ifdef SET_THREAD_SELF
3804 SET_THREAD_SELF(thr);
3806 thr->self = pthread_self();
3807 #endif /* SET_THREAD_SELF */
3811 * These must come after the thread self setting
3812 * because sv_setpvn does SvTAINT and the taint
3813 * fields thread selfness being set.
3815 PL_toptarget = NEWSV(0,0);
3816 sv_upgrade(PL_toptarget, SVt_PVFM);
3817 sv_setpvn(PL_toptarget, "", 0);
3818 PL_bodytarget = NEWSV(0,0);
3819 sv_upgrade(PL_bodytarget, SVt_PVFM);
3820 sv_setpvn(PL_bodytarget, "", 0);
3821 PL_formtarget = PL_bodytarget;
3822 thr->errsv = newSVpvn("", 0);
3823 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
3826 PL_peepp = MEMBER_TO_FPTR(Perl_peep);
3827 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3828 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3829 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3830 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3831 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
3833 PL_reginterp_cnt = 0;
3837 #endif /* USE_5005THREADS */
3840 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
3843 line_t oldline = CopLINE(PL_curcop);
3849 while (AvFILL(paramList) >= 0) {
3850 cv = (CV*)av_shift(paramList);
3851 if (PL_savebegin && (paramList == PL_beginav)) {
3852 /* save PL_beginav for compiler */
3853 if (! PL_beginav_save)
3854 PL_beginav_save = newAV();
3855 av_push(PL_beginav_save, (SV*)cv);
3859 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3860 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_list_body), cv);
3866 #ifndef PERL_FLEXIBLE_EXCEPTIONS
3870 (void)SvPV(atsv, len);
3873 PL_curcop = &PL_compiling;
3874 CopLINE_set(PL_curcop, oldline);
3875 if (paramList == PL_beginav)
3876 sv_catpv(atsv, "BEGIN failed--compilation aborted");
3878 Perl_sv_catpvf(aTHX_ atsv,
3879 "%s failed--call queue aborted",
3880 paramList == PL_checkav ? "CHECK"
3881 : paramList == PL_initav ? "INIT"
3883 while (PL_scopestack_ix > oldscope)
3886 Perl_croak(aTHX_ "%s", SvPVx(atsv, n_a));
3893 /* my_exit() was called */
3894 while (PL_scopestack_ix > oldscope)
3897 PL_curstash = PL_defstash;
3898 PL_curcop = &PL_compiling;
3899 CopLINE_set(PL_curcop, oldline);
3901 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
3902 if (paramList == PL_beginav)
3903 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
3905 Perl_croak(aTHX_ "%s failed--call queue aborted",
3906 paramList == PL_checkav ? "CHECK"
3907 : paramList == PL_initav ? "INIT"
3914 PL_curcop = &PL_compiling;
3915 CopLINE_set(PL_curcop, oldline);
3918 PerlIO_printf(Perl_error_log, "panic: restartop\n");
3926 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3928 S_vcall_list_body(pTHX_ va_list args)
3930 CV *cv = va_arg(args, CV*);
3931 return call_list_body(cv);
3936 S_call_list_body(pTHX_ CV *cv)
3938 PUSHMARK(PL_stack_sp);
3939 call_sv((SV*)cv, G_EVAL|G_DISCARD);
3944 Perl_my_exit(pTHX_ U32 status)
3946 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
3947 thr, (unsigned long) status));
3956 STATUS_NATIVE_SET(status);
3963 Perl_my_failure_exit(pTHX)
3966 if (vaxc$errno & 1) {
3967 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
3968 STATUS_NATIVE_SET(44);
3971 if (!vaxc$errno && errno) /* unlikely */
3972 STATUS_NATIVE_SET(44);
3974 STATUS_NATIVE_SET(vaxc$errno);
3979 STATUS_POSIX_SET(errno);
3981 exitstatus = STATUS_POSIX >> 8;
3982 if (exitstatus & 255)
3983 STATUS_POSIX_SET(exitstatus);
3985 STATUS_POSIX_SET(255);
3992 S_my_exit_jump(pTHX)
3994 register PERL_CONTEXT *cx;
3999 SvREFCNT_dec(PL_e_script);
4000 PL_e_script = Nullsv;
4003 POPSTACK_TO(PL_mainstack);
4004 if (cxstack_ix >= 0) {
4007 POPBLOCK(cx,PL_curpm);
4015 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen)
4018 p = SvPVX(PL_e_script);
4019 nl = strchr(p, '\n');
4020 nl = (nl) ? nl+1 : SvEND(PL_e_script);
4022 filter_del(read_e_script);
4025 sv_catpvn(buf_sv, p, nl-p);
4026 sv_chop(PL_e_script, nl);