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 =head1 Embedding Functions
107 =for apidoc perl_alloc
109 Allocates a new Perl interpreter. See L<perlembed>.
117 PerlInterpreter *my_perl;
119 /* New() needs interpreter, so call malloc() instead */
120 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
123 Zero(my_perl, 1, PerlInterpreter);
126 #endif /* PERL_IMPLICIT_SYS */
129 =for apidoc perl_construct
131 Initializes a new Perl interpreter. See L<perlembed>.
137 perl_construct(pTHXx)
139 #ifdef USE_5005THREADS
141 struct perl_thread *thr = NULL;
142 #endif /* FAKE_THREADS */
143 #endif /* USE_5005THREADS */
147 PL_perl_destruct_level = 1;
149 if (PL_perl_destruct_level > 0)
153 /* Init the real globals (and main thread)? */
155 #ifdef USE_5005THREADS
156 MUTEX_INIT(&PL_sv_mutex);
158 * Safe to use basic SV functions from now on (though
159 * not things like mortals or tainting yet).
161 MUTEX_INIT(&PL_eval_mutex);
162 COND_INIT(&PL_eval_cond);
163 MUTEX_INIT(&PL_threads_mutex);
164 COND_INIT(&PL_nthreads_cond);
165 # ifdef EMULATE_ATOMIC_REFCOUNTS
166 MUTEX_INIT(&PL_svref_mutex);
167 # endif /* EMULATE_ATOMIC_REFCOUNTS */
169 MUTEX_INIT(&PL_cred_mutex);
170 MUTEX_INIT(&PL_sv_lock_mutex);
171 MUTEX_INIT(&PL_fdpid_mutex);
173 thr = init_main_thread();
174 #endif /* USE_5005THREADS */
176 #ifdef PERL_FLEXIBLE_EXCEPTIONS
177 PL_protect = MEMBER_TO_FPTR(Perl_default_protect); /* for exceptions */
180 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
182 PL_linestr = NEWSV(65,79);
183 sv_upgrade(PL_linestr,SVt_PVIV);
185 if (!SvREADONLY(&PL_sv_undef)) {
186 /* set read-only and try to insure than we wont see REFCNT==0
189 SvREADONLY_on(&PL_sv_undef);
190 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
192 sv_setpv(&PL_sv_no,PL_No);
194 SvREADONLY_on(&PL_sv_no);
195 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
197 sv_setpv(&PL_sv_yes,PL_Yes);
199 SvREADONLY_on(&PL_sv_yes);
200 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
203 PL_sighandlerp = Perl_sighandler;
204 PL_pidstatus = newHV();
208 * There is no way we can refer to them from Perl so close them to save
209 * space. The other alternative would be to provide STDAUX and STDPRN
212 (void)PerlIO_close(PerlIO_importFILE(stdaux, 0));
213 (void)PerlIO_close(PerlIO_importFILE(stdprn, 0));
217 PL_rs = newSVpvn("\n", 1);
222 PL_lex_state = LEX_NOTPARSING;
228 SET_NUMERIC_STANDARD();
232 PL_patchlevel = NEWSV(0,4);
233 (void)SvUPGRADE(PL_patchlevel, SVt_PVNV);
234 if (PERL_REVISION > 127 || PERL_VERSION > 127 || PERL_SUBVERSION > 127)
235 SvGROW(PL_patchlevel, UTF8_MAXLEN*3+1);
236 s = (U8*)SvPVX(PL_patchlevel);
237 /* Build version strings using "native" characters */
238 s = uvchr_to_utf8(s, (UV)PERL_REVISION);
239 s = uvchr_to_utf8(s, (UV)PERL_VERSION);
240 s = uvchr_to_utf8(s, (UV)PERL_SUBVERSION);
242 SvCUR_set(PL_patchlevel, s - (U8*)SvPVX(PL_patchlevel));
243 SvPOK_on(PL_patchlevel);
244 SvNVX(PL_patchlevel) = (NV)PERL_REVISION
245 + ((NV)PERL_VERSION / (NV)1000)
246 #if defined(PERL_SUBVERSION) && PERL_SUBVERSION > 0
247 + ((NV)PERL_SUBVERSION / (NV)1000000)
250 SvNOK_on(PL_patchlevel); /* dual valued */
251 SvUTF8_on(PL_patchlevel);
252 SvREADONLY_on(PL_patchlevel);
255 #if defined(LOCAL_PATCH_COUNT)
256 PL_localpatches = local_patches; /* For possible -v */
259 #ifdef HAVE_INTERP_INTERN
263 PerlIO_init(aTHX); /* Hook to IO system */
265 PL_fdpid = newAV(); /* for remembering popen pids by fd */
266 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
267 PL_errors = newSVpvn("",0);
269 PL_regex_padav = newAV();
270 av_push(PL_regex_padav,(SV*)newAV()); /* First entry is an array of empty elements */
271 PL_regex_pad = AvARRAY(PL_regex_padav);
273 #ifdef USE_REENTRANT_API
274 New(31337, PL_reentrant_buffer,1, REBUF);
275 New(31337, PL_reentrant_buffer->tmbuff,1, struct tm);
278 /* Note that strtab is a rather special HV. Assumptions are made
279 about not iterating on it, and not adding tie magic to it.
280 It is properly deallocated in perl_destruct() */
283 #ifdef USE_5005THREADS
284 MUTEX_INIT(&PL_strtab_mutex);
286 HvSHAREKEYS_off(PL_strtab); /* mandatory */
287 hv_ksplit(PL_strtab, 512);
289 #if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
290 _dyld_lookup_and_bind
291 ("__environ", (unsigned long *) &environ_pointer, NULL);
294 #ifdef USE_ENVIRON_ARRAY
295 PL_origenviron = environ;
302 =for apidoc perl_destruct
304 Shuts down a Perl interpreter. See L<perlembed>.
312 volatile int destruct_level; /* 0=none, 1=full, 2=full with checks */
314 #ifdef USE_5005THREADS
317 #endif /* USE_5005THREADS */
319 /* wait for all pseudo-forked children to finish */
320 PERL_WAIT_FOR_CHILDREN;
322 #ifdef USE_5005THREADS
324 /* Pass 1 on any remaining threads: detach joinables, join zombies */
326 MUTEX_LOCK(&PL_threads_mutex);
327 DEBUG_S(PerlIO_printf(Perl_debug_log,
328 "perl_destruct: waiting for %d threads...\n",
330 for (t = thr->next; t != thr; t = t->next) {
331 MUTEX_LOCK(&t->mutex);
332 switch (ThrSTATE(t)) {
335 DEBUG_S(PerlIO_printf(Perl_debug_log,
336 "perl_destruct: joining zombie %p\n", t));
337 ThrSETSTATE(t, THRf_DEAD);
338 MUTEX_UNLOCK(&t->mutex);
341 * The SvREFCNT_dec below may take a long time (e.g. av
342 * may contain an object scalar whose destructor gets
343 * called) so we have to unlock threads_mutex and start
346 MUTEX_UNLOCK(&PL_threads_mutex);
348 SvREFCNT_dec((SV*)av);
349 DEBUG_S(PerlIO_printf(Perl_debug_log,
350 "perl_destruct: joined zombie %p OK\n", t));
352 case THRf_R_JOINABLE:
353 DEBUG_S(PerlIO_printf(Perl_debug_log,
354 "perl_destruct: detaching thread %p\n", t));
355 ThrSETSTATE(t, THRf_R_DETACHED);
357 * We unlock threads_mutex and t->mutex in the opposite order
358 * from which we locked them just so that DETACH won't
359 * deadlock if it panics. It's only a breach of good style
360 * not a bug since they are unlocks not locks.
362 MUTEX_UNLOCK(&PL_threads_mutex);
364 MUTEX_UNLOCK(&t->mutex);
367 DEBUG_S(PerlIO_printf(Perl_debug_log,
368 "perl_destruct: ignoring %p (state %u)\n",
370 MUTEX_UNLOCK(&t->mutex);
371 /* fall through and out */
374 /* We leave the above "Pass 1" loop with threads_mutex still locked */
376 /* Pass 2 on remaining threads: wait for the thread count to drop to one */
377 while (PL_nthreads > 1)
379 DEBUG_S(PerlIO_printf(Perl_debug_log,
380 "perl_destruct: final wait for %d threads\n",
382 COND_WAIT(&PL_nthreads_cond, &PL_threads_mutex);
384 /* At this point, we're the last thread */
385 MUTEX_UNLOCK(&PL_threads_mutex);
386 DEBUG_S(PerlIO_printf(Perl_debug_log, "perl_destruct: armageddon has arrived\n"));
387 MUTEX_DESTROY(&PL_threads_mutex);
388 COND_DESTROY(&PL_nthreads_cond);
390 #endif /* !defined(FAKE_THREADS) */
391 #endif /* USE_5005THREADS */
393 destruct_level = PL_perl_destruct_level;
397 if ((s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL"))) {
399 if (destruct_level < i)
406 if(PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
411 if (PL_endav && !PL_minus_c)
412 call_list(PL_scopestack_ix, PL_endav);
418 /* We must account for everything. */
420 /* Destroy the main CV and syntax tree */
422 PL_curpad = AvARRAY(PL_comppad);
423 op_free(PL_main_root);
424 PL_main_root = Nullop;
426 PL_curcop = &PL_compiling;
427 PL_main_start = Nullop;
428 SvREFCNT_dec(PL_main_cv);
432 /* Tell PerlIO we are about to tear things apart in case
433 we have layers which are using resources that should
437 PerlIO_destruct(aTHX);
439 if (PL_sv_objcount) {
441 * Try to destruct global references. We do this first so that the
442 * destructors and destructees still exist. Some sv's might remain.
443 * Non-referenced objects are on their own.
448 /* unhook hooks which will soon be, or use, destroyed data */
449 SvREFCNT_dec(PL_warnhook);
450 PL_warnhook = Nullsv;
451 SvREFCNT_dec(PL_diehook);
454 /* call exit list functions */
455 while (PL_exitlistlen-- > 0)
456 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
458 Safefree(PL_exitlist);
460 if (destruct_level == 0){
462 DEBUG_P(debprofdump());
464 #if defined(PERLIO_LAYERS)
465 /* No more IO - including error messages ! */
466 PerlIO_cleanup(aTHX);
469 /* The exit() function will do everything that needs doing. */
470 return STATUS_NATIVE_EXPORT;;
473 /* jettison our possibly duplicated environment */
474 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
475 * so we certainly shouldn't free it here
477 #if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
478 if (environ != PL_origenviron) {
481 for (i = 0; environ[i]; i++)
482 safesysfree(environ[i]);
484 /* Must use safesysfree() when working with environ. */
485 safesysfree(environ);
487 environ = PL_origenviron;
492 /* the syntax tree is shared between clones
493 * so op_free(PL_main_root) only ReREFCNT_dec's
494 * REGEXPs in the parent interpreter
495 * we need to manually ReREFCNT_dec for the clones
498 I32 i = AvFILLp(PL_regex_padav) + 1;
499 SV **ary = AvARRAY(PL_regex_padav);
503 REGEXP *re = INT2PTR(REGEXP *,SvIVX(resv));
505 if (SvFLAGS(resv) & SVf_BREAK) {
506 /* this is PL_reg_curpm, already freed
507 * flag is set in regexec.c:S_regtry
509 SvFLAGS(resv) &= ~SVf_BREAK;
511 else if(SvREPADTMP(resv)) {
512 SvREPADTMP_off(resv);
519 SvREFCNT_dec(PL_regex_padav);
520 PL_regex_padav = Nullav;
524 /* loosen bonds of global variables */
527 (void)PerlIO_close(PL_rsfp);
531 /* Filters for program text */
532 SvREFCNT_dec(PL_rsfp_filters);
533 PL_rsfp_filters = Nullav;
536 PL_preprocess = FALSE;
542 PL_doswitches = FALSE;
543 PL_dowarn = G_WARN_OFF;
544 PL_doextract = FALSE;
545 PL_sawampersand = FALSE; /* must save all match strings */
548 Safefree(PL_inplace);
550 SvREFCNT_dec(PL_patchlevel);
553 SvREFCNT_dec(PL_e_script);
554 PL_e_script = Nullsv;
557 while (--PL_origargc >= 0) {
558 Safefree(PL_origargv[PL_origargc]);
560 Safefree(PL_origargv);
562 /* magical thingies */
564 SvREFCNT_dec(PL_ofs_sv); /* $, */
567 SvREFCNT_dec(PL_ors_sv); /* $\ */
570 SvREFCNT_dec(PL_rs); /* $/ */
573 PL_multiline = 0; /* $* */
574 Safefree(PL_osname); /* $^O */
577 SvREFCNT_dec(PL_statname);
578 PL_statname = Nullsv;
581 /* defgv, aka *_ should be taken care of elsewhere */
583 /* clean up after study() */
584 SvREFCNT_dec(PL_lastscream);
585 PL_lastscream = Nullsv;
586 Safefree(PL_screamfirst);
588 Safefree(PL_screamnext);
592 Safefree(PL_efloatbuf);
593 PL_efloatbuf = Nullch;
596 /* startup and shutdown function lists */
597 SvREFCNT_dec(PL_beginav);
598 SvREFCNT_dec(PL_beginav_save);
599 SvREFCNT_dec(PL_endav);
600 SvREFCNT_dec(PL_checkav);
601 SvREFCNT_dec(PL_initav);
603 PL_beginav_save = Nullav;
608 /* shortcuts just get cleared */
614 PL_argvoutgv = Nullgv;
616 PL_stderrgv = Nullgv;
617 PL_last_in_gv = Nullgv;
619 PL_debstash = Nullhv;
621 /* reset so print() ends up where we expect */
624 SvREFCNT_dec(PL_argvout_stack);
625 PL_argvout_stack = Nullav;
627 SvREFCNT_dec(PL_modglobal);
628 PL_modglobal = Nullhv;
629 SvREFCNT_dec(PL_preambleav);
630 PL_preambleav = Nullav;
631 SvREFCNT_dec(PL_subname);
633 SvREFCNT_dec(PL_linestr);
635 SvREFCNT_dec(PL_pidstatus);
636 PL_pidstatus = Nullhv;
637 SvREFCNT_dec(PL_toptarget);
638 PL_toptarget = Nullsv;
639 SvREFCNT_dec(PL_bodytarget);
640 PL_bodytarget = Nullsv;
641 PL_formtarget = Nullsv;
643 /* free locale stuff */
644 #ifdef USE_LOCALE_COLLATE
645 Safefree(PL_collation_name);
646 PL_collation_name = Nullch;
649 #ifdef USE_LOCALE_NUMERIC
650 Safefree(PL_numeric_name);
651 PL_numeric_name = Nullch;
652 SvREFCNT_dec(PL_numeric_radix_sv);
655 /* clear utf8 character classes */
656 SvREFCNT_dec(PL_utf8_alnum);
657 SvREFCNT_dec(PL_utf8_alnumc);
658 SvREFCNT_dec(PL_utf8_ascii);
659 SvREFCNT_dec(PL_utf8_alpha);
660 SvREFCNT_dec(PL_utf8_space);
661 SvREFCNT_dec(PL_utf8_cntrl);
662 SvREFCNT_dec(PL_utf8_graph);
663 SvREFCNT_dec(PL_utf8_digit);
664 SvREFCNT_dec(PL_utf8_upper);
665 SvREFCNT_dec(PL_utf8_lower);
666 SvREFCNT_dec(PL_utf8_print);
667 SvREFCNT_dec(PL_utf8_punct);
668 SvREFCNT_dec(PL_utf8_xdigit);
669 SvREFCNT_dec(PL_utf8_mark);
670 SvREFCNT_dec(PL_utf8_toupper);
671 SvREFCNT_dec(PL_utf8_totitle);
672 SvREFCNT_dec(PL_utf8_tolower);
673 SvREFCNT_dec(PL_utf8_tofold);
674 PL_utf8_alnum = Nullsv;
675 PL_utf8_alnumc = Nullsv;
676 PL_utf8_ascii = Nullsv;
677 PL_utf8_alpha = Nullsv;
678 PL_utf8_space = Nullsv;
679 PL_utf8_cntrl = Nullsv;
680 PL_utf8_graph = Nullsv;
681 PL_utf8_digit = Nullsv;
682 PL_utf8_upper = Nullsv;
683 PL_utf8_lower = Nullsv;
684 PL_utf8_print = Nullsv;
685 PL_utf8_punct = Nullsv;
686 PL_utf8_xdigit = Nullsv;
687 PL_utf8_mark = Nullsv;
688 PL_utf8_toupper = Nullsv;
689 PL_utf8_totitle = Nullsv;
690 PL_utf8_tolower = Nullsv;
691 PL_utf8_tofold = Nullsv;
693 if (!specialWARN(PL_compiling.cop_warnings))
694 SvREFCNT_dec(PL_compiling.cop_warnings);
695 PL_compiling.cop_warnings = Nullsv;
696 if (!specialCopIO(PL_compiling.cop_io))
697 SvREFCNT_dec(PL_compiling.cop_io);
698 PL_compiling.cop_io = Nullsv;
700 Safefree(CopFILE(&PL_compiling));
701 CopFILE(&PL_compiling) = Nullch;
702 Safefree(CopSTASHPV(&PL_compiling));
704 SvREFCNT_dec(CopFILEGV(&PL_compiling));
705 CopFILEGV(&PL_compiling) = Nullgv;
706 /* cop_stash is not refcounted */
709 /* Prepare to destruct main symbol table. */
714 SvREFCNT_dec(PL_curstname);
715 PL_curstname = Nullsv;
717 /* clear queued errors */
718 SvREFCNT_dec(PL_errors);
722 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
723 if (PL_scopestack_ix != 0)
724 Perl_warner(aTHX_ WARN_INTERNAL,
725 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
726 (long)PL_scopestack_ix);
727 if (PL_savestack_ix != 0)
728 Perl_warner(aTHX_ WARN_INTERNAL,
729 "Unbalanced saves: %ld more saves than restores\n",
730 (long)PL_savestack_ix);
731 if (PL_tmps_floor != -1)
732 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced tmps: %ld more allocs than frees\n",
733 (long)PL_tmps_floor + 1);
734 if (cxstack_ix != -1)
735 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced context: %ld more PUSHes than POPs\n",
736 (long)cxstack_ix + 1);
739 /* Now absolutely destruct everything, somehow or other, loops or no. */
740 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
741 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
743 /* the 2 is for PL_fdpid and PL_strtab */
744 while (PL_sv_count > 2 && sv_clean_all())
747 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
748 SvFLAGS(PL_fdpid) |= SVt_PVAV;
749 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
750 SvFLAGS(PL_strtab) |= SVt_PVHV;
752 AvREAL_off(PL_fdpid); /* no surviving entries */
753 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
756 #ifdef HAVE_INTERP_INTERN
760 /* Destruct the global string table. */
762 /* Yell and reset the HeVAL() slots that are still holding refcounts,
763 * so that sv_free() won't fail on them.
771 max = HvMAX(PL_strtab);
772 array = HvARRAY(PL_strtab);
775 if (hent && ckWARN_d(WARN_INTERNAL)) {
776 Perl_warner(aTHX_ WARN_INTERNAL,
777 "Unbalanced string table refcount: (%d) for \"%s\"",
778 HeVAL(hent) - Nullsv, HeKEY(hent));
779 HeVAL(hent) = Nullsv;
789 SvREFCNT_dec(PL_strtab);
792 /* free the pointer table used for cloning */
793 ptr_table_free(PL_ptr_table);
796 /* free special SVs */
798 SvREFCNT(&PL_sv_yes) = 0;
799 sv_clear(&PL_sv_yes);
800 SvANY(&PL_sv_yes) = NULL;
801 SvFLAGS(&PL_sv_yes) = 0;
803 SvREFCNT(&PL_sv_no) = 0;
805 SvANY(&PL_sv_no) = NULL;
806 SvFLAGS(&PL_sv_no) = 0;
808 SvREFCNT(&PL_sv_undef) = 0;
809 SvREADONLY_off(&PL_sv_undef);
811 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
812 Perl_warner(aTHX_ WARN_INTERNAL,"Scalars leaked: %ld\n", (long)PL_sv_count);
814 #if defined(PERLIO_LAYERS)
815 /* No more IO - including error messages ! */
816 PerlIO_cleanup(aTHX);
819 Safefree(PL_origfilename);
820 Safefree(PL_reg_start_tmp);
822 Safefree(PL_reg_curpm);
823 Safefree(PL_reg_poscache);
824 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
825 Safefree(PL_op_mask);
826 Safefree(PL_psig_ptr);
827 Safefree(PL_psig_name);
828 Safefree(PL_bitcount);
829 Safefree(PL_psig_pend);
831 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
833 DEBUG_P(debprofdump());
834 #ifdef USE_5005THREADS
835 MUTEX_DESTROY(&PL_strtab_mutex);
836 MUTEX_DESTROY(&PL_sv_mutex);
837 MUTEX_DESTROY(&PL_eval_mutex);
838 MUTEX_DESTROY(&PL_cred_mutex);
839 MUTEX_DESTROY(&PL_fdpid_mutex);
840 COND_DESTROY(&PL_eval_cond);
841 #ifdef EMULATE_ATOMIC_REFCOUNTS
842 MUTEX_DESTROY(&PL_svref_mutex);
843 #endif /* EMULATE_ATOMIC_REFCOUNTS */
845 /* As the penultimate thing, free the non-arena SV for thrsv */
846 Safefree(SvPVX(PL_thrsv));
847 Safefree(SvANY(PL_thrsv));
850 #endif /* USE_5005THREADS */
852 #ifdef USE_REENTRANT_API
853 Safefree(PL_reentrant_buffer->tmbuff);
854 Safefree(PL_reentrant_buffer);
859 /* As the absolutely last thing, free the non-arena SV for mess() */
862 /* it could have accumulated taint magic */
863 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
866 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
867 moremagic = mg->mg_moremagic;
868 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
870 Safefree(mg->mg_ptr);
874 /* we know that type >= SVt_PV */
875 (void)SvOOK_off(PL_mess_sv);
876 Safefree(SvPVX(PL_mess_sv));
877 Safefree(SvANY(PL_mess_sv));
878 Safefree(PL_mess_sv);
881 return STATUS_NATIVE_EXPORT;
885 =for apidoc perl_free
887 Releases a Perl interpreter. See L<perlembed>.
895 #if defined(WIN32) || defined(NETWARE)
896 # if defined(PERL_IMPLICIT_SYS)
898 void *host = nw_internal_host;
900 void *host = w32_internal_host;
904 nw5_delete_internal_host(host);
906 win32_delete_internal_host(host);
917 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
919 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
920 PL_exitlist[PL_exitlistlen].fn = fn;
921 PL_exitlist[PL_exitlistlen].ptr = ptr;
926 =for apidoc perl_parse
928 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
934 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
939 #ifdef USE_5005THREADS
943 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
946 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
947 setuid perl scripts securely.\n");
953 /* we copy rather than point to argv
954 * since perl_clone will copy and perl_destruct
955 * has no way of knowing if we've made a copy or
959 New(0, PL_origargv, i+1, char*);
960 PL_origargv[i] = '\0';
962 PL_origargv[i] = savepv(argv[i]);
970 /* Come here if running an undumped a.out. */
972 PL_origfilename = savepv(argv[0]);
973 PL_do_undump = FALSE;
974 cxstack_ix = -1; /* start label stack again */
976 init_postdump_symbols(argc,argv,env);
981 PL_curpad = AvARRAY(PL_comppad);
982 op_free(PL_main_root);
983 PL_main_root = Nullop;
985 PL_main_start = Nullop;
986 SvREFCNT_dec(PL_main_cv);
990 oldscope = PL_scopestack_ix;
991 PL_dowarn = G_WARN_OFF;
993 #ifdef PERL_FLEXIBLE_EXCEPTIONS
994 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
1000 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1001 parse_body(env,xsinit);
1004 call_list(oldscope, PL_checkav);
1011 /* my_exit() was called */
1012 while (PL_scopestack_ix > oldscope)
1015 PL_curstash = PL_defstash;
1017 call_list(oldscope, PL_checkav);
1018 ret = STATUS_NATIVE_EXPORT;
1021 PerlIO_printf(Perl_error_log, "panic: top_env\n");
1029 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1031 S_vparse_body(pTHX_ va_list args)
1033 char **env = va_arg(args, char**);
1034 XSINIT_t xsinit = va_arg(args, XSINIT_t);
1036 return parse_body(env, xsinit);
1041 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
1043 int argc = PL_origargc;
1044 char **argv = PL_origargv;
1045 char *scriptname = NULL;
1047 VOL bool dosearch = FALSE;
1048 char *validarg = "";
1052 char *cddir = Nullch;
1054 sv_setpvn(PL_linestr,"",0);
1055 sv = newSVpvn("",0); /* first used for -I flags */
1059 for (argc--,argv++; argc > 0; argc--,argv++) {
1060 if (argv[0][0] != '-' || !argv[0][1])
1064 validarg = " PHOOEY ";
1073 win32_argv2utf8(argc-1, argv+1);
1076 #ifndef PERL_STRICT_CR
1100 if ((s = moreswitches(s)))
1105 if( !PL_tainting ) {
1106 PL_taint_warn = TRUE;
1113 PL_taint_warn = FALSE;
1118 #ifdef MACOS_TRADITIONAL
1119 /* ignore -e for Dev:Pseudo argument */
1120 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
1123 if (PL_euid != PL_uid || PL_egid != PL_gid)
1124 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
1126 PL_e_script = newSVpvn("",0);
1127 filter_add(read_e_script, NULL);
1130 sv_catpv(PL_e_script, s);
1132 sv_catpv(PL_e_script, argv[1]);
1136 Perl_croak(aTHX_ "No code specified for -e");
1137 sv_catpv(PL_e_script, "\n");
1140 case 'I': /* -I handled both here and in moreswitches() */
1142 if (!*++s && (s=argv[1]) != Nullch) {
1147 STRLEN len = strlen(s);
1148 p = savepvn(s, len);
1149 incpush(p, TRUE, TRUE);
1150 sv_catpvn(sv, "-I", 2);
1151 sv_catpvn(sv, p, len);
1152 sv_catpvn(sv, " ", 1);
1156 Perl_croak(aTHX_ "No directory specified for -I");
1160 PL_preprocess = TRUE;
1170 PL_preambleav = newAV();
1171 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
1173 PL_Sv = newSVpv("print myconfig();",0);
1175 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
1177 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
1179 sv_catpv(PL_Sv,"\" Compile-time options:");
1181 sv_catpv(PL_Sv," DEBUGGING");
1183 # ifdef MULTIPLICITY
1184 sv_catpv(PL_Sv," MULTIPLICITY");
1186 # ifdef USE_5005THREADS
1187 sv_catpv(PL_Sv," USE_5005THREADS");
1189 # ifdef USE_ITHREADS
1190 sv_catpv(PL_Sv," USE_ITHREADS");
1192 # ifdef USE_64_BIT_INT
1193 sv_catpv(PL_Sv," USE_64_BIT_INT");
1195 # ifdef USE_64_BIT_ALL
1196 sv_catpv(PL_Sv," USE_64_BIT_ALL");
1198 # ifdef USE_LONG_DOUBLE
1199 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1201 # ifdef USE_LARGE_FILES
1202 sv_catpv(PL_Sv," USE_LARGE_FILES");
1205 sv_catpv(PL_Sv," USE_SOCKS");
1207 # ifdef PERL_IMPLICIT_CONTEXT
1208 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1210 # ifdef PERL_IMPLICIT_SYS
1211 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1213 sv_catpv(PL_Sv,"\\n\",");
1215 #if defined(LOCAL_PATCH_COUNT)
1216 if (LOCAL_PATCH_COUNT > 0) {
1218 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
1219 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1220 if (PL_localpatches[i])
1221 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
1225 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
1228 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
1230 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
1233 sv_catpv(PL_Sv, "; \
1235 @env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; ");
1238 push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
1241 print \" \\%ENV:\\n @env\\n\" if @env; \
1242 print \" \\@INC:\\n @INC\\n\";");
1245 PL_Sv = newSVpv("config_vars(qw(",0);
1246 sv_catpv(PL_Sv, ++s);
1247 sv_catpv(PL_Sv, "))");
1250 av_push(PL_preambleav, PL_Sv);
1251 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1254 PL_doextract = TRUE;
1262 if (!*++s || isSPACE(*s)) {
1266 /* catch use of gnu style long options */
1267 if (strEQ(s, "version")) {
1271 if (strEQ(s, "help")) {
1278 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1284 #ifndef SECURE_INTERNAL_GETENV
1287 (s = PerlEnv_getenv("PERL5OPT")))
1292 if (*s == '-' && *(s+1) == 'T') {
1294 PL_taint_warn = FALSE;
1297 char *popt_copy = Nullch;
1310 if (!strchr("DIMUdmtw", *s))
1311 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
1315 popt_copy = SvPVX(sv_2mortal(newSVpv(popt,0)));
1316 s = popt_copy + (s - popt);
1317 d = popt_copy + (d - popt);
1324 if( !PL_tainting ) {
1325 PL_taint_warn = TRUE;
1335 if (PL_taint_warn && PL_dowarn != G_WARN_ALL_OFF) {
1336 PL_compiling.cop_warnings = newSVpvn(WARN_TAINTstring, WARNsize);
1340 scriptname = argv[0];
1343 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1345 else if (scriptname == Nullch) {
1347 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1355 open_script(scriptname,dosearch,sv,&fdscript);
1357 validate_suid(validarg, scriptname,fdscript);
1360 #if defined(SIGCHLD) || defined(SIGCLD)
1363 # define SIGCHLD SIGCLD
1365 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1366 if (sigstate == SIG_IGN) {
1367 if (ckWARN(WARN_SIGNAL))
1368 Perl_warner(aTHX_ WARN_SIGNAL,
1369 "Can't ignore signal CHLD, forcing to default");
1370 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1376 #ifdef MACOS_TRADITIONAL
1377 if (PL_doextract || gMacPerl_AlwaysExtract) {
1382 if (cddir && PerlDir_chdir(cddir) < 0)
1383 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1387 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1388 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1389 CvUNIQUE_on(PL_compcv);
1391 PL_comppad = newAV();
1392 av_push(PL_comppad, Nullsv);
1393 PL_curpad = AvARRAY(PL_comppad);
1394 PL_comppad_name = newAV();
1395 PL_comppad_name_fill = 0;
1396 PL_min_intro_pending = 0;
1398 #ifdef USE_5005THREADS
1399 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
1400 PL_curpad[0] = (SV*)newAV();
1401 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1402 CvOWNER(PL_compcv) = 0;
1403 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1404 MUTEX_INIT(CvMUTEXP(PL_compcv));
1405 #endif /* USE_5005THREADS */
1407 comppadlist = newAV();
1408 AvREAL_off(comppadlist);
1409 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1410 av_store(comppadlist, 1, (SV*)PL_comppad);
1411 CvPADLIST(PL_compcv) = comppadlist;
1414 boot_core_UNIVERSAL();
1416 boot_core_xsutils();
1420 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
1422 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
1428 # ifdef HAS_SOCKS5_INIT
1429 socks5_init(argv[0]);
1435 init_predump_symbols();
1436 /* init_postdump_symbols not currently designed to be called */
1437 /* more than once (ENV isn't cleared first, for example) */
1438 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
1440 init_postdump_symbols(argc,argv,env);
1444 /* now parse the script */
1446 SETERRNO(0,SS$_NORMAL);
1448 #ifdef MACOS_TRADITIONAL
1449 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1451 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1453 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1454 MacPerl_MPWFileName(PL_origfilename));
1458 if (yyparse() || PL_error_count) {
1460 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
1462 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1467 CopLINE_set(PL_curcop, 0);
1468 PL_curstash = PL_defstash;
1469 PL_preprocess = FALSE;
1471 SvREFCNT_dec(PL_e_script);
1472 PL_e_script = Nullsv;
1476 Not sure that this is still the right place to do this now that we
1477 no longer use PL_nrs. HVDS 2001/09/09
1479 sv_setsv(get_sv("/", TRUE), PL_rs);
1485 SAVECOPFILE(PL_curcop);
1486 SAVECOPLINE(PL_curcop);
1487 gv_check(PL_defstash);
1494 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1495 dump_mstats("after compilation:");
1504 =for apidoc perl_run
1506 Tells a Perl interpreter to run. See L<perlembed>.
1517 #ifdef USE_5005THREADS
1521 oldscope = PL_scopestack_ix;
1526 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1528 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1534 cxstack_ix = -1; /* start context stack again */
1536 case 0: /* normal completion */
1537 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1542 case 2: /* my_exit() */
1543 while (PL_scopestack_ix > oldscope)
1546 PL_curstash = PL_defstash;
1547 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
1548 PL_endav && !PL_minus_c)
1549 call_list(oldscope, PL_endav);
1551 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1552 dump_mstats("after execution: ");
1554 ret = STATUS_NATIVE_EXPORT;
1558 POPSTACK_TO(PL_mainstack);
1561 PerlIO_printf(Perl_error_log, "panic: restartop\n");
1571 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1573 S_vrun_body(pTHX_ va_list args)
1575 I32 oldscope = va_arg(args, I32);
1577 return run_body(oldscope);
1583 S_run_body(pTHX_ I32 oldscope)
1585 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
1586 PL_sawampersand ? "Enabling" : "Omitting"));
1588 if (!PL_restartop) {
1589 DEBUG_x(dump_all());
1590 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
1591 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1595 #ifdef MACOS_TRADITIONAL
1596 PerlIO_printf(Perl_error_log, "# %s syntax OK\n", MacPerl_MPWFileName(PL_origfilename));
1598 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
1602 if (PERLDB_SINGLE && PL_DBsingle)
1603 sv_setiv(PL_DBsingle, 1);
1605 call_list(oldscope, PL_initav);
1611 PL_op = PL_restartop;
1615 else if (PL_main_start) {
1616 CvDEPTH(PL_main_cv) = 1;
1617 PL_op = PL_main_start;
1627 =head1 SV Manipulation Functions
1629 =for apidoc p||get_sv
1631 Returns the SV of the specified Perl scalar. If C<create> is set and the
1632 Perl variable does not exist then it will be created. If C<create> is not
1633 set and the variable does not exist then NULL is returned.
1639 Perl_get_sv(pTHX_ const char *name, I32 create)
1642 #ifdef USE_5005THREADS
1643 if (name[1] == '\0' && !isALPHA(name[0])) {
1644 PADOFFSET tmp = find_threadsv(name);
1645 if (tmp != NOT_IN_PAD)
1646 return THREADSV(tmp);
1648 #endif /* USE_5005THREADS */
1649 gv = gv_fetchpv(name, create, SVt_PV);
1656 =head1 Array Manipulation Functions
1658 =for apidoc p||get_av
1660 Returns the AV of the specified Perl array. 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_av(pTHX_ const char *name, I32 create)
1670 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1679 =head1 Hash Manipulation Functions
1681 =for apidoc p||get_hv
1683 Returns the HV of the specified Perl hash. If C<create> is set and the
1684 Perl variable does not exist then it will be created. If C<create> is not
1685 set and the variable does not exist then NULL is returned.
1691 Perl_get_hv(pTHX_ const char *name, I32 create)
1693 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1702 =head1 CV Manipulation Functions
1704 =for apidoc p||get_cv
1706 Returns the CV of the specified Perl subroutine. If C<create> is set and
1707 the Perl subroutine does not exist then it will be declared (which has the
1708 same effect as saying C<sub name;>). If C<create> is not set and the
1709 subroutine does not exist then NULL is returned.
1715 Perl_get_cv(pTHX_ const char *name, I32 create)
1717 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
1718 /* XXX unsafe for threads if eval_owner isn't held */
1719 /* XXX this is probably not what they think they're getting.
1720 * It has the same effect as "sub name;", i.e. just a forward
1722 if (create && !GvCVu(gv))
1723 return newSUB(start_subparse(FALSE, 0),
1724 newSVOP(OP_CONST, 0, newSVpv(name,0)),
1732 /* Be sure to refetch the stack pointer after calling these routines. */
1736 =head1 Callback Functions
1738 =for apidoc p||call_argv
1740 Performs a callback to the specified Perl sub. See L<perlcall>.
1746 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
1748 /* See G_* flags in cop.h */
1749 /* null terminated arg list */
1756 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
1761 return call_pv(sub_name, flags);
1765 =for apidoc p||call_pv
1767 Performs a callback to the specified Perl sub. See L<perlcall>.
1773 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
1774 /* name of the subroutine */
1775 /* See G_* flags in cop.h */
1777 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
1781 =for apidoc p||call_method
1783 Performs a callback to the specified Perl method. The blessed object must
1784 be on the stack. See L<perlcall>.
1790 Perl_call_method(pTHX_ const char *methname, I32 flags)
1791 /* name of the subroutine */
1792 /* See G_* flags in cop.h */
1794 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
1797 /* May be called with any of a CV, a GV, or an SV containing the name. */
1799 =for apidoc p||call_sv
1801 Performs a callback to the Perl sub whose name is in the SV. See
1808 Perl_call_sv(pTHX_ SV *sv, I32 flags)
1809 /* See G_* flags in cop.h */
1812 LOGOP myop; /* fake syntax tree node */
1815 volatile I32 retval = 0;
1817 bool oldcatch = CATCH_GET;
1822 if (flags & G_DISCARD) {
1827 Zero(&myop, 1, LOGOP);
1828 myop.op_next = Nullop;
1829 if (!(flags & G_NOARGS))
1830 myop.op_flags |= OPf_STACKED;
1831 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1832 (flags & G_ARRAY) ? OPf_WANT_LIST :
1837 EXTEND(PL_stack_sp, 1);
1838 *++PL_stack_sp = sv;
1840 oldscope = PL_scopestack_ix;
1842 if (PERLDB_SUB && PL_curstash != PL_debstash
1843 /* Handle first BEGIN of -d. */
1844 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
1845 /* Try harder, since this may have been a sighandler, thus
1846 * curstash may be meaningless. */
1847 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
1848 && !(flags & G_NODEBUG))
1849 PL_op->op_private |= OPpENTERSUB_DB;
1851 if (flags & G_METHOD) {
1852 Zero(&method_op, 1, UNOP);
1853 method_op.op_next = PL_op;
1854 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1855 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
1856 PL_op = (OP*)&method_op;
1859 if (!(flags & G_EVAL)) {
1861 call_body((OP*)&myop, FALSE);
1862 retval = PL_stack_sp - (PL_stack_base + oldmark);
1863 CATCH_SET(oldcatch);
1866 myop.op_other = (OP*)&myop;
1868 /* we're trying to emulate pp_entertry() here */
1870 register PERL_CONTEXT *cx;
1871 I32 gimme = GIMME_V;
1876 push_return(Nullop);
1877 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
1879 PL_eval_root = PL_op; /* Only needed so that goto works right. */
1881 PL_in_eval = EVAL_INEVAL;
1882 if (flags & G_KEEPERR)
1883 PL_in_eval |= EVAL_KEEPERR;
1889 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1891 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1898 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1900 call_body((OP*)&myop, FALSE);
1902 retval = PL_stack_sp - (PL_stack_base + oldmark);
1903 if (!(flags & G_KEEPERR))
1910 /* my_exit() was called */
1911 PL_curstash = PL_defstash;
1914 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1915 Perl_croak(aTHX_ "Callback called exit");
1920 PL_op = PL_restartop;
1924 PL_stack_sp = PL_stack_base + oldmark;
1925 if (flags & G_ARRAY)
1929 *++PL_stack_sp = &PL_sv_undef;
1934 if (PL_scopestack_ix > oldscope) {
1938 register PERL_CONTEXT *cx;
1950 if (flags & G_DISCARD) {
1951 PL_stack_sp = PL_stack_base + oldmark;
1960 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1962 S_vcall_body(pTHX_ va_list args)
1964 OP *myop = va_arg(args, OP*);
1965 int is_eval = va_arg(args, int);
1967 call_body(myop, is_eval);
1973 S_call_body(pTHX_ OP *myop, int is_eval)
1975 if (PL_op == myop) {
1977 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
1979 PL_op = Perl_pp_entersub(aTHX); /* this does */
1985 /* Eval a string. The G_EVAL flag is always assumed. */
1988 =for apidoc p||eval_sv
1990 Tells Perl to C<eval> the string in the SV.
1996 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
1998 /* See G_* flags in cop.h */
2001 UNOP myop; /* fake syntax tree node */
2002 volatile I32 oldmark = SP - PL_stack_base;
2003 volatile I32 retval = 0;
2009 if (flags & G_DISCARD) {
2016 Zero(PL_op, 1, UNOP);
2017 EXTEND(PL_stack_sp, 1);
2018 *++PL_stack_sp = sv;
2019 oldscope = PL_scopestack_ix;
2021 if (!(flags & G_NOARGS))
2022 myop.op_flags = OPf_STACKED;
2023 myop.op_next = Nullop;
2024 myop.op_type = OP_ENTEREVAL;
2025 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
2026 (flags & G_ARRAY) ? OPf_WANT_LIST :
2028 if (flags & G_KEEPERR)
2029 myop.op_flags |= OPf_SPECIAL;
2031 #ifdef PERL_FLEXIBLE_EXCEPTIONS
2033 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
2040 #ifndef PERL_FLEXIBLE_EXCEPTIONS
2042 call_body((OP*)&myop,TRUE);
2044 retval = PL_stack_sp - (PL_stack_base + oldmark);
2045 if (!(flags & G_KEEPERR))
2052 /* my_exit() was called */
2053 PL_curstash = PL_defstash;
2056 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
2057 Perl_croak(aTHX_ "Callback called exit");
2062 PL_op = PL_restartop;
2066 PL_stack_sp = PL_stack_base + oldmark;
2067 if (flags & G_ARRAY)
2071 *++PL_stack_sp = &PL_sv_undef;
2077 if (flags & G_DISCARD) {
2078 PL_stack_sp = PL_stack_base + oldmark;
2088 =for apidoc p||eval_pv
2090 Tells Perl to C<eval> the given string and return an SV* result.
2096 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
2099 SV* sv = newSVpv(p, 0);
2101 eval_sv(sv, G_SCALAR);
2108 if (croak_on_error && SvTRUE(ERRSV)) {
2110 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
2116 /* Require a module. */
2119 =head1 Embedding Functions
2121 =for apidoc p||require_pv
2123 Tells Perl to C<require> the file named by the string argument. It is
2124 analogous to the Perl code C<eval "require '$file'">. It's even
2125 implemented that way; consider using Perl_load_module instead.
2130 Perl_require_pv(pTHX_ const char *pv)
2134 PUSHSTACKi(PERLSI_REQUIRE);
2136 sv = sv_newmortal();
2137 sv_setpv(sv, "require '");
2140 eval_sv(sv, G_DISCARD);
2146 Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
2150 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
2151 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
2155 S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
2157 /* This message really ought to be max 23 lines.
2158 * Removed -h because the user already knows that option. Others? */
2160 static char *usage_msg[] = {
2161 "-0[octal] specify record separator (\\0, if no argument)",
2162 "-a autosplit mode with -n or -p (splits $_ into @F)",
2163 "-C enable native wide character system interfaces",
2164 "-c check syntax only (runs BEGIN and CHECK blocks)",
2165 "-d[:debugger] run program under debugger",
2166 "-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2167 "-e 'command' one line of program (several -e's allowed, omit programfile)",
2168 "-F/pattern/ split() pattern for -a switch (//'s are optional)",
2169 "-i[extension] edit <> files in place (makes backup if extension supplied)",
2170 "-Idirectory specify @INC/#include directory (several -I's allowed)",
2171 "-l[octal] enable line ending processing, specifies line terminator",
2172 "-[mM][-]module execute `use/no module...' before executing program",
2173 "-n assume 'while (<>) { ... }' loop around program",
2174 "-p assume loop like -n but print line also, like sed",
2175 "-P run program through C preprocessor before compilation",
2176 "-s enable rudimentary parsing for switches after programfile",
2177 "-S look for programfile using PATH environment variable",
2178 "-T enable tainting checks",
2179 "-u dump core after parsing program",
2180 "-U allow unsafe operations",
2181 "-v print version, subversion (includes VERY IMPORTANT perl info)",
2182 "-V[:variable] print configuration summary (or a single Config.pm variable)",
2183 "-w enable many useful warnings (RECOMMENDED)",
2184 "-W enable all warnings",
2185 "-X disable all warnings",
2186 "-x[directory] strip off text before #!perl line and perhaps cd to directory",
2190 char **p = usage_msg;
2192 PerlIO_printf(PerlIO_stdout(),
2193 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2196 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
2199 /* This routine handles any switches that can be given during run */
2202 Perl_moreswitches(pTHX_ char *s)
2212 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
2213 SvREFCNT_dec(PL_rs);
2214 if (rschar & ~((U8)~0))
2215 PL_rs = &PL_sv_undef;
2216 else if (!rschar && numlen >= 2)
2217 PL_rs = newSVpvn("", 0);
2220 PL_rs = newSVpvn(&ch, 1);
2225 PL_widesyscalls = TRUE;
2231 while (*s && !isSPACE(*s)) ++s;
2233 PL_splitstr = savepv(PL_splitstr);
2246 /* The following permits -d:Mod to accepts arguments following an =
2247 in the fashion that -MSome::Mod does. */
2248 if (*s == ':' || *s == '=') {
2251 sv = newSVpv("use Devel::", 0);
2253 /* We now allow -d:Module=Foo,Bar */
2254 while(isALNUM(*s) || *s==':') ++s;
2256 sv_catpv(sv, start);
2258 sv_catpvn(sv, start, s-start);
2259 sv_catpv(sv, " split(/,/,q{");
2264 my_setenv("PERL5DB", SvPV(sv, PL_na));
2267 PL_perldb = PERLDB_ALL;
2275 if (isALPHA(s[1])) {
2276 /* if adding extra options, remember to update DEBUG_MASK */
2277 static char debopts[] = "psltocPmfrxuLHXDSTR";
2280 for (s++; *s && (d = strchr(debopts,*s)); s++)
2281 PL_debug |= 1 << (d - debopts);
2284 PL_debug = atoi(s+1);
2285 for (s++; isDIGIT(*s); s++) ;
2287 PL_debug |= DEBUG_TOP_FLAG;
2289 if (ckWARN_d(WARN_DEBUGGING))
2290 Perl_warner(aTHX_ WARN_DEBUGGING,
2291 "Recompile perl with -DDEBUGGING to use -D switch\n");
2292 for (s++; isALNUM(*s); s++) ;
2298 usage(PL_origargv[0]);
2302 Safefree(PL_inplace);
2303 PL_inplace = savepv(s+1);
2305 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
2308 if (*s == '-') /* Additional switches on #! line. */
2312 case 'I': /* -I handled both here and in parse_body() */
2315 while (*s && isSPACE(*s))
2320 /* ignore trailing spaces (possibly followed by other switches) */
2322 for (e = p; *e && !isSPACE(*e); e++) ;
2326 } while (*p && *p != '-');
2327 e = savepvn(s, e-s);
2328 incpush(e, TRUE, TRUE);
2335 Perl_croak(aTHX_ "No directory specified for -I");
2341 SvREFCNT_dec(PL_ors_sv);
2346 PL_ors_sv = newSVpvn("\n",1);
2347 numlen = 3 + (*s == '0');
2348 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
2352 if (RsPARA(PL_rs)) {
2353 PL_ors_sv = newSVpvn("\n\n",2);
2356 PL_ors_sv = newSVsv(PL_rs);
2361 forbid_setid("-M"); /* XXX ? */
2364 forbid_setid("-m"); /* XXX ? */
2369 /* -M-foo == 'no foo' */
2370 if (*s == '-') { use = "no "; ++s; }
2371 sv = newSVpv(use,0);
2373 /* We allow -M'Module qw(Foo Bar)' */
2374 while(isALNUM(*s) || *s==':') ++s;
2376 sv_catpv(sv, start);
2377 if (*(start-1) == 'm') {
2379 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
2380 sv_catpv( sv, " ()");
2384 Perl_croak(aTHX_ "Module name required with -%c option",
2386 sv_catpvn(sv, start, s-start);
2387 sv_catpv(sv, " split(/,/,q{");
2393 PL_preambleav = newAV();
2394 av_push(PL_preambleav, sv);
2397 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
2409 PL_doswitches = TRUE;
2414 Perl_croak(aTHX_ "Too late for \"-t\" option");
2419 Perl_croak(aTHX_ "Too late for \"-T\" option");
2423 #ifdef MACOS_TRADITIONAL
2424 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2426 PL_do_undump = TRUE;
2435 PerlIO_printf(PerlIO_stdout(),
2436 Perl_form(aTHX_ "\nThis is perl, v%"VDf" built for %s",
2437 PL_patchlevel, ARCHNAME));
2439 /* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
2440 PerlIO_printf(PerlIO_stdout(),
2441 Perl_form(aTHX_ "\nThis is perl, version %vd\n", PL_patchlevel));
2442 PerlIO_printf(PerlIO_stdout(),
2443 Perl_form(aTHX_ " built under %s at %s %s\n",
2444 OSNAME, __DATE__, __TIME__));
2445 PerlIO_printf(PerlIO_stdout(),
2446 Perl_form(aTHX_ " OS Specific Release: %s\n",
2450 #if defined(LOCAL_PATCH_COUNT)
2451 if (LOCAL_PATCH_COUNT > 0)
2452 PerlIO_printf(PerlIO_stdout(),
2453 "\n(with %d registered patch%s, "
2454 "see perl -V for more detail)",
2455 (int)LOCAL_PATCH_COUNT,
2456 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
2459 PerlIO_printf(PerlIO_stdout(),
2460 "\n\nCopyright 1987-2001, Larry Wall\n");
2461 #ifdef MACOS_TRADITIONAL
2462 PerlIO_printf(PerlIO_stdout(),
2463 "\nMac OS port Copyright 1991-2001, Matthias Neeracher;\n"
2464 "maintained by Chris Nandor\n");
2467 PerlIO_printf(PerlIO_stdout(),
2468 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
2471 PerlIO_printf(PerlIO_stdout(),
2472 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2473 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
2476 PerlIO_printf(PerlIO_stdout(),
2477 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2478 "Version 5 port Copyright (c) 1994-1999, Andreas Kaiser, Ilya Zakharevich\n");
2481 PerlIO_printf(PerlIO_stdout(),
2482 "atariST series port, ++jrb bammi@cadence.com\n");
2485 PerlIO_printf(PerlIO_stdout(),
2486 "BeOS port Copyright Tom Spindler, 1997-1999\n");
2489 PerlIO_printf(PerlIO_stdout(),
2490 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2001\n");
2493 PerlIO_printf(PerlIO_stdout(),
2494 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
2497 PerlIO_printf(PerlIO_stdout(),
2498 "Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n");
2501 PerlIO_printf(PerlIO_stdout(),
2502 "VM/ESA port by Neale Ferguson, 1998-1999\n");
2505 PerlIO_printf(PerlIO_stdout(),
2506 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
2509 PerlIO_printf(PerlIO_stdout(),
2510 "MiNT port by Guido Flohr, 1997-1999\n");
2513 PerlIO_printf(PerlIO_stdout(),
2514 "EPOC port by Olaf Flebbe, 1999-2000\n");
2517 printf("WINCE port by Rainer Keuchel, 2001\n");
2518 printf("Built on " __DATE__ " " __TIME__ "\n\n");
2521 #ifdef BINARY_BUILD_NOTICE
2522 BINARY_BUILD_NOTICE;
2524 PerlIO_printf(PerlIO_stdout(),
2526 Perl may be copied only under the terms of either the Artistic License or the\n\
2527 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
2528 Complete documentation for Perl, including FAQ lists, should be found on\n\
2529 this system using `man perl' or `perldoc perl'. If you have access to the\n\
2530 Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
2533 if (! (PL_dowarn & G_WARN_ALL_MASK))
2534 PL_dowarn |= G_WARN_ON;
2538 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
2539 if (!specialWARN(PL_compiling.cop_warnings))
2540 SvREFCNT_dec(PL_compiling.cop_warnings);
2541 PL_compiling.cop_warnings = pWARN_ALL ;
2545 PL_dowarn = G_WARN_ALL_OFF;
2546 if (!specialWARN(PL_compiling.cop_warnings))
2547 SvREFCNT_dec(PL_compiling.cop_warnings);
2548 PL_compiling.cop_warnings = pWARN_NONE ;
2553 if (s[1] == '-') /* Additional switches on #! line. */
2558 #if defined(WIN32) || !defined(PERL_STRICT_CR)
2564 #ifdef ALTERNATE_SHEBANG
2565 case 'S': /* OS/2 needs -S on "extproc" line. */
2573 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
2578 /* compliments of Tom Christiansen */
2580 /* unexec() can be found in the Gnu emacs distribution */
2581 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
2584 Perl_my_unexec(pTHX)
2592 prog = newSVpv(BIN_EXP, 0);
2593 sv_catpv(prog, "/perl");
2594 file = newSVpv(PL_origfilename, 0);
2595 sv_catpv(file, ".perldump");
2597 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2598 /* unexec prints msg to stderr in case of failure */
2599 PerlProc_exit(status);
2602 # include <lib$routines.h>
2603 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
2605 ABORT(); /* for use with undump */
2610 /* initialize curinterp */
2616 # define PERLVAR(var,type)
2617 # define PERLVARA(var,n,type)
2618 # if defined(PERL_IMPLICIT_CONTEXT)
2619 # if defined(USE_5005THREADS)
2620 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2621 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2622 # else /* !USE_5005THREADS */
2623 # define PERLVARI(var,type,init) aTHX->var = init;
2624 # define PERLVARIC(var,type,init) aTHX->var = init;
2625 # endif /* USE_5005THREADS */
2627 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2628 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2630 # include "intrpvar.h"
2631 # ifndef USE_5005THREADS
2632 # include "thrdvar.h"
2639 # define PERLVAR(var,type)
2640 # define PERLVARA(var,n,type)
2641 # define PERLVARI(var,type,init) PL_##var = init;
2642 # define PERLVARIC(var,type,init) PL_##var = init;
2643 # include "intrpvar.h"
2644 # ifndef USE_5005THREADS
2645 # include "thrdvar.h"
2656 S_init_main_stash(pTHX)
2662 PL_curstash = PL_defstash = newHV();
2663 PL_curstname = newSVpvn("main",4);
2664 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2665 SvREFCNT_dec(GvHV(gv));
2666 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
2668 HvNAME(PL_defstash) = savepv("main");
2669 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2670 GvMULTI_on(PL_incgv);
2671 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2672 GvMULTI_on(PL_hintgv);
2673 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2674 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2675 GvMULTI_on(PL_errgv);
2676 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2677 GvMULTI_on(PL_replgv);
2678 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
2679 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2680 sv_setpvn(ERRSV, "", 0);
2681 PL_curstash = PL_defstash;
2682 CopSTASH_set(&PL_compiling, PL_defstash);
2683 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
2684 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
2685 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
2686 /* We must init $/ before switches are processed. */
2687 sv_setpvn(get_sv("/", TRUE), "\n", 1);
2691 S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
2695 char *cpp_discard_flag;
2701 PL_origfilename = savepv("-e");
2704 /* if find_script() returns, it returns a malloc()-ed value */
2705 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
2707 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2708 char *s = scriptname + 8;
2709 *fdscript = atoi(s);
2713 scriptname = savepv(s + 1);
2714 Safefree(PL_origfilename);
2715 PL_origfilename = scriptname;
2720 # ifdef USE_ITHREADS
2721 Safefree(CopFILE(PL_curcop));
2723 SvREFCNT_dec(CopFILEGV(PL_curcop));
2725 CopFILE_set(PL_curcop, PL_origfilename);
2726 if (strEQ(PL_origfilename,"-"))
2728 if (*fdscript >= 0) {
2729 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
2730 # if defined(HAS_FCNTL) && defined(F_SETFD)
2732 /* ensure close-on-exec */
2733 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1);
2736 else if (PL_preprocess) {
2737 char *cpp_cfg = CPPSTDIN;
2738 SV *cpp = newSVpvn("",0);
2739 SV *cmd = NEWSV(0,0);
2741 if (strEQ(cpp_cfg, "cppstdin"))
2742 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
2743 sv_catpv(cpp, cpp_cfg);
2746 sv_catpvn(sv, "-I", 2);
2747 sv_catpv(sv,PRIVLIB_EXP);
2750 DEBUG_P(PerlIO_printf(Perl_debug_log,
2751 "PL_preprocess: scriptname=\"%s\", cpp=\"%s\", sv=\"%s\", CPPMINUS=\"%s\"\n",
2752 scriptname, SvPVX (cpp), SvPVX (sv), CPPMINUS));
2754 # if defined(MSDOS) || defined(WIN32) || defined(VMS)
2761 cpp_discard_flag = "";
2763 cpp_discard_flag = "-C";
2767 perl = os2_execname(aTHX);
2769 perl = PL_origargv[0];
2773 /* This strips off Perl comments which might interfere with
2774 the C pre-processor, including #!. #line directives are
2775 deliberately stripped to avoid confusion with Perl's version
2776 of #line. FWP played some golf with it so it will fit
2777 into VMS's 255 character buffer.
2780 code = "(1../^#!.*perl/i)|/^\\s*#(?!\\s*((ifn?|un)def|(el|end)?if|define|include|else|error|pragma)\\b)/||!($|=1)||print";
2782 code = "/^\\s*#(?!\\s*((ifn?|un)def|(el|end)?if|define|include|else|error|pragma)\\b)/||!($|=1)||print";
2784 Perl_sv_setpvf(aTHX_ cmd, "\
2785 %s -ne%s%s%s %s | %"SVf" %s %"SVf" %s",
2786 perl, quote, code, quote, scriptname, cpp,
2787 cpp_discard_flag, sv, CPPMINUS);
2789 PL_doextract = FALSE;
2790 # ifdef IAMSUID /* actually, this is caught earlier */
2791 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
2793 (void)seteuid(PL_uid); /* musn't stay setuid root */
2795 # ifdef HAS_SETREUID
2796 (void)setreuid((Uid_t)-1, PL_uid);
2798 # ifdef HAS_SETRESUID
2799 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
2801 PerlProc_setuid(PL_uid);
2805 if (PerlProc_geteuid() != PL_uid)
2806 Perl_croak(aTHX_ "Can't do seteuid!\n");
2808 # endif /* IAMSUID */
2810 DEBUG_P(PerlIO_printf(Perl_debug_log,
2811 "PL_preprocess: cmd=\"%s\"\n",
2814 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
2818 else if (!*scriptname) {
2819 forbid_setid("program input from stdin");
2820 PL_rsfp = PerlIO_stdin();
2823 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
2824 # if defined(HAS_FCNTL) && defined(F_SETFD)
2826 /* ensure close-on-exec */
2827 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1);
2832 # ifndef IAMSUID /* in case script is not readable before setuid */
2834 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
2835 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2838 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT,
2839 BIN_EXP, (int)PERL_REVISION,
2841 (int)PERL_SUBVERSION), PL_origargv);
2842 Perl_croak(aTHX_ "Can't do setuid\n");
2848 Perl_croak(aTHX_ "Can't open perl script: %s\n",
2851 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
2852 CopFILE(PL_curcop), Strerror(errno));
2858 * I_SYSSTATVFS HAS_FSTATVFS
2860 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
2861 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2862 * here so that metaconfig picks them up. */
2866 S_fd_on_nosuid_fs(pTHX_ int fd)
2868 int check_okay = 0; /* able to do all the required sys/libcalls */
2869 int on_nosuid = 0; /* the fd is on a nosuid fs */
2871 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
2872 * fstatvfs() is UNIX98.
2873 * fstatfs() is 4.3 BSD.
2874 * ustat()+getmnt() is pre-4.3 BSD.
2875 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2876 * an irrelevant filesystem while trying to reach the right one.
2879 #undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2881 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2882 defined(HAS_FSTATVFS)
2883 # define FD_ON_NOSUID_CHECK_OKAY
2884 struct statvfs stfs;
2886 check_okay = fstatvfs(fd, &stfs) == 0;
2887 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
2888 # endif /* fstatvfs */
2890 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2891 defined(PERL_MOUNT_NOSUID) && \
2892 defined(HAS_FSTATFS) && \
2893 defined(HAS_STRUCT_STATFS) && \
2894 defined(HAS_STRUCT_STATFS_F_FLAGS)
2895 # define FD_ON_NOSUID_CHECK_OKAY
2898 check_okay = fstatfs(fd, &stfs) == 0;
2899 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
2900 # endif /* fstatfs */
2902 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2903 defined(PERL_MOUNT_NOSUID) && \
2904 defined(HAS_FSTAT) && \
2905 defined(HAS_USTAT) && \
2906 defined(HAS_GETMNT) && \
2907 defined(HAS_STRUCT_FS_DATA) && \
2909 # define FD_ON_NOSUID_CHECK_OKAY
2912 if (fstat(fd, &fdst) == 0) {
2914 if (ustat(fdst.st_dev, &us) == 0) {
2916 /* NOSTAT_ONE here because we're not examining fields which
2917 * vary between that case and STAT_ONE. */
2918 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
2919 size_t cmplen = sizeof(us.f_fname);
2920 if (sizeof(fsd.fd_req.path) < cmplen)
2921 cmplen = sizeof(fsd.fd_req.path);
2922 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2923 fdst.st_dev == fsd.fd_req.dev) {
2925 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2931 # endif /* fstat+ustat+getmnt */
2933 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2934 defined(HAS_GETMNTENT) && \
2935 defined(HAS_HASMNTOPT) && \
2936 defined(MNTOPT_NOSUID)
2937 # define FD_ON_NOSUID_CHECK_OKAY
2938 FILE *mtab = fopen("/etc/mtab", "r");
2939 struct mntent *entry;
2940 struct stat stb, fsb;
2942 if (mtab && (fstat(fd, &stb) == 0)) {
2943 while (entry = getmntent(mtab)) {
2944 if (stat(entry->mnt_dir, &fsb) == 0
2945 && fsb.st_dev == stb.st_dev)
2947 /* found the filesystem */
2949 if (hasmntopt(entry, MNTOPT_NOSUID))
2952 } /* A single fs may well fail its stat(). */
2957 # endif /* getmntent+hasmntopt */
2960 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
2963 #endif /* IAMSUID */
2966 S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
2972 /* do we need to emulate setuid on scripts? */
2974 /* This code is for those BSD systems that have setuid #! scripts disabled
2975 * in the kernel because of a security problem. Merely defining DOSUID
2976 * in perl will not fix that problem, but if you have disabled setuid
2977 * scripts in the kernel, this will attempt to emulate setuid and setgid
2978 * on scripts that have those now-otherwise-useless bits set. The setuid
2979 * root version must be called suidperl or sperlN.NNN. If regular perl
2980 * discovers that it has opened a setuid script, it calls suidperl with
2981 * the same argv that it had. If suidperl finds that the script it has
2982 * just opened is NOT setuid root, it sets the effective uid back to the
2983 * uid. We don't just make perl setuid root because that loses the
2984 * effective uid we had before invoking perl, if it was different from the
2987 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2988 * be defined in suidperl only. suidperl must be setuid root. The
2989 * Configure script will set this up for you if you want it.
2995 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
2996 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
2997 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
3002 #ifndef HAS_SETREUID
3003 /* On this access check to make sure the directories are readable,
3004 * there is actually a small window that the user could use to make
3005 * filename point to an accessible directory. So there is a faint
3006 * chance that someone could execute a setuid script down in a
3007 * non-accessible directory. I don't know what to do about that.
3008 * But I don't think it's too important. The manual lies when
3009 * it says access() is useful in setuid programs.
3011 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
3012 Perl_croak(aTHX_ "Permission denied");
3014 /* If we can swap euid and uid, then we can determine access rights
3015 * with a simple stat of the file, and then compare device and
3016 * inode to make sure we did stat() on the same file we opened.
3017 * Then we just have to make sure he or she can execute it.
3020 struct stat tmpstatbuf;
3024 setreuid(PL_euid,PL_uid) < 0
3027 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
3030 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
3031 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
3032 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
3033 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
3034 #if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
3035 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
3036 Perl_croak(aTHX_ "Permission denied");
3038 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
3039 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
3040 (void)PerlIO_close(PL_rsfp);
3041 Perl_croak(aTHX_ "Permission denied\n");
3045 setreuid(PL_uid,PL_euid) < 0
3047 # if defined(HAS_SETRESUID)
3048 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
3051 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
3052 Perl_croak(aTHX_ "Can't reswap uid and euid");
3053 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
3054 Perl_croak(aTHX_ "Permission denied\n");
3056 #endif /* HAS_SETREUID */
3057 #endif /* IAMSUID */
3059 if (!S_ISREG(PL_statbuf.st_mode))
3060 Perl_croak(aTHX_ "Permission denied");
3061 if (PL_statbuf.st_mode & S_IWOTH)
3062 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
3063 PL_doswitches = FALSE; /* -s is insecure in suid */
3064 CopLINE_inc(PL_curcop);
3065 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
3066 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
3067 Perl_croak(aTHX_ "No #! line");
3068 s = SvPV(PL_linestr,n_a)+2;
3070 while (!isSPACE(*s)) s++;
3071 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
3072 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
3073 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
3074 Perl_croak(aTHX_ "Not a perl script");
3075 while (*s == ' ' || *s == '\t') s++;
3077 * #! arg must be what we saw above. They can invoke it by
3078 * mentioning suidperl explicitly, but they may not add any strange
3079 * arguments beyond what #! says if they do invoke suidperl that way.
3081 len = strlen(validarg);
3082 if (strEQ(validarg," PHOOEY ") ||
3083 strnNE(s,validarg,len) || !isSPACE(s[len]))
3084 Perl_croak(aTHX_ "Args must match #! line");
3087 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
3088 PL_euid == PL_statbuf.st_uid)
3090 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3091 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3092 #endif /* IAMSUID */
3094 if (PL_euid) { /* oops, we're not the setuid root perl */
3095 (void)PerlIO_close(PL_rsfp);
3098 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
3099 (int)PERL_REVISION, (int)PERL_VERSION,
3100 (int)PERL_SUBVERSION), PL_origargv);
3102 Perl_croak(aTHX_ "Can't do setuid\n");
3105 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
3107 (void)setegid(PL_statbuf.st_gid);
3110 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
3112 #ifdef HAS_SETRESGID
3113 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
3115 PerlProc_setgid(PL_statbuf.st_gid);
3119 if (PerlProc_getegid() != PL_statbuf.st_gid)
3120 Perl_croak(aTHX_ "Can't do setegid!\n");
3122 if (PL_statbuf.st_mode & S_ISUID) {
3123 if (PL_statbuf.st_uid != PL_euid)
3125 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
3128 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
3130 #ifdef HAS_SETRESUID
3131 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
3133 PerlProc_setuid(PL_statbuf.st_uid);
3137 if (PerlProc_geteuid() != PL_statbuf.st_uid)
3138 Perl_croak(aTHX_ "Can't do seteuid!\n");
3140 else if (PL_uid) { /* oops, mustn't run as root */
3142 (void)seteuid((Uid_t)PL_uid);
3145 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
3147 #ifdef HAS_SETRESUID
3148 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
3150 PerlProc_setuid((Uid_t)PL_uid);
3154 if (PerlProc_geteuid() != PL_uid)
3155 Perl_croak(aTHX_ "Can't do seteuid!\n");
3158 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
3159 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
3162 else if (PL_preprocess)
3163 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
3164 else if (fdscript >= 0)
3165 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
3167 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
3169 /* We absolutely must clear out any saved ids here, so we */
3170 /* exec the real perl, substituting fd script for scriptname. */
3171 /* (We pass script name as "subdir" of fd, which perl will grok.) */
3172 PerlIO_rewind(PL_rsfp);
3173 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
3174 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3175 if (!PL_origargv[which])
3176 Perl_croak(aTHX_ "Permission denied");
3177 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
3178 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
3179 #if defined(HAS_FCNTL) && defined(F_SETFD)
3180 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
3182 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
3183 (int)PERL_REVISION, (int)PERL_VERSION,
3184 (int)PERL_SUBVERSION), PL_origargv);/* try again */
3185 Perl_croak(aTHX_ "Can't do setuid\n");
3186 #endif /* IAMSUID */
3188 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
3189 #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
3190 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3191 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3193 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3196 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3197 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3198 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3199 /* not set-id, must be wrapped */
3205 S_find_beginning(pTHX)
3207 register char *s, *s2;
3209 /* skip forward in input to the real script? */
3212 #ifdef MACOS_TRADITIONAL
3213 /* Since the Mac OS does not honor #! arguments for us, we do it ourselves */
3215 while (PL_doextract || gMacPerl_AlwaysExtract) {
3216 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3217 if (!gMacPerl_AlwaysExtract)
3218 Perl_croak(aTHX_ "No Perl script found in input\n");
3220 if (PL_doextract) /* require explicit override ? */
3221 if (!OverrideExtract(PL_origfilename))
3222 Perl_croak(aTHX_ "User aborted script\n");
3224 PL_doextract = FALSE;
3226 /* Pater peccavi, file does not have #! */
3227 PerlIO_rewind(PL_rsfp);
3232 while (PL_doextract) {
3233 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
3234 Perl_croak(aTHX_ "No Perl script found in input\n");
3237 if (*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))) {
3238 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3239 PL_doextract = FALSE;
3240 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3242 while (*s == ' ' || *s == '\t') s++;
3244 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3245 if (strnEQ(s2-4,"perl",4))
3247 while ((s = moreswitches(s)))
3250 #ifdef MACOS_TRADITIONAL
3261 PL_uid = PerlProc_getuid();
3262 PL_euid = PerlProc_geteuid();
3263 PL_gid = PerlProc_getgid();
3264 PL_egid = PerlProc_getegid();
3266 PL_uid |= PL_gid << 16;
3267 PL_euid |= PL_egid << 16;
3269 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3273 S_forbid_setid(pTHX_ char *s)
3275 if (PL_euid != PL_uid)
3276 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3277 if (PL_egid != PL_gid)
3278 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
3282 Perl_init_debugger(pTHX)
3284 HV *ostash = PL_curstash;
3286 PL_curstash = PL_debstash;
3287 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3288 AvREAL_off(PL_dbargs);
3289 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3290 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3291 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
3292 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3293 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
3294 sv_setiv(PL_DBsingle, 0);
3295 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
3296 sv_setiv(PL_DBtrace, 0);
3297 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
3298 sv_setiv(PL_DBsignal, 0);
3299 PL_curstash = ostash;
3302 #ifndef STRESS_REALLOC
3303 #define REASONABLE(size) (size)
3305 #define REASONABLE(size) (1) /* unreasonable */
3309 Perl_init_stacks(pTHX)
3311 /* start with 128-item stack and 8K cxstack */
3312 PL_curstackinfo = new_stackinfo(REASONABLE(128),
3313 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3314 PL_curstackinfo->si_type = PERLSI_MAIN;
3315 PL_curstack = PL_curstackinfo->si_stack;
3316 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
3318 PL_stack_base = AvARRAY(PL_curstack);
3319 PL_stack_sp = PL_stack_base;
3320 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
3322 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3325 PL_tmps_max = REASONABLE(128);
3327 New(54,PL_markstack,REASONABLE(32),I32);
3328 PL_markstack_ptr = PL_markstack;
3329 PL_markstack_max = PL_markstack + REASONABLE(32);
3333 New(54,PL_scopestack,REASONABLE(32),I32);
3334 PL_scopestack_ix = 0;
3335 PL_scopestack_max = REASONABLE(32);
3337 New(54,PL_savestack,REASONABLE(128),ANY);
3338 PL_savestack_ix = 0;
3339 PL_savestack_max = REASONABLE(128);
3341 New(54,PL_retstack,REASONABLE(16),OP*);
3343 PL_retstack_max = REASONABLE(16);
3351 while (PL_curstackinfo->si_next)
3352 PL_curstackinfo = PL_curstackinfo->si_next;
3353 while (PL_curstackinfo) {
3354 PERL_SI *p = PL_curstackinfo->si_prev;
3355 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3356 Safefree(PL_curstackinfo->si_cxstack);
3357 Safefree(PL_curstackinfo);
3358 PL_curstackinfo = p;
3360 Safefree(PL_tmps_stack);
3361 Safefree(PL_markstack);
3362 Safefree(PL_scopestack);
3363 Safefree(PL_savestack);
3364 Safefree(PL_retstack);
3373 lex_start(PL_linestr);
3375 PL_subname = newSVpvn("main",4);
3379 S_init_predump_symbols(pTHX)
3384 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3385 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3386 GvMULTI_on(PL_stdingv);
3387 io = GvIOp(PL_stdingv);
3388 IoTYPE(io) = IoTYPE_RDONLY;
3389 IoIFP(io) = PerlIO_stdin();
3390 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
3392 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3394 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
3397 IoTYPE(io) = IoTYPE_WRONLY;
3398 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
3400 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
3402 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3404 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3405 GvMULTI_on(PL_stderrgv);
3406 io = GvIOp(PL_stderrgv);
3407 IoTYPE(io) = IoTYPE_WRONLY;
3408 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
3409 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
3411 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3413 PL_statname = NEWSV(66,0); /* last filename we did stat on */
3416 Safefree(PL_osname);
3417 PL_osname = savepv(OSNAME);
3421 Perl_init_argv_symbols(pTHX_ register int argc, register char **argv)
3424 argc--,argv++; /* skip name of script */
3425 if (PL_doswitches) {
3426 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3429 if (argv[0][1] == '-' && !argv[0][2]) {
3433 if ((s = strchr(argv[0], '='))) {
3435 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
3438 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
3441 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3442 GvMULTI_on(PL_argvgv);
3443 (void)gv_AVadd(PL_argvgv);
3444 av_clear(GvAVn(PL_argvgv));
3445 for (; argc > 0; argc--,argv++) {
3446 SV *sv = newSVpv(argv[0],0);
3447 av_push(GvAVn(PL_argvgv),sv);
3448 if (PL_widesyscalls)
3449 (void)sv_utf8_decode(sv);
3454 #ifdef HAS_PROCSELFEXE
3455 /* This is a function so that we don't hold on to MAXPATHLEN
3456 bytes of stack longer than necessary
3459 S_procself_val(pTHX_ SV *sv, char *arg0)
3461 char buf[MAXPATHLEN];
3462 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
3464 sv_setpvn(sv,buf,len);
3470 #endif /* HAS_PROCSELFEXE */
3473 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
3479 PL_toptarget = NEWSV(0,0);
3480 sv_upgrade(PL_toptarget, SVt_PVFM);
3481 sv_setpvn(PL_toptarget, "", 0);
3482 PL_bodytarget = NEWSV(0,0);
3483 sv_upgrade(PL_bodytarget, SVt_PVFM);
3484 sv_setpvn(PL_bodytarget, "", 0);
3485 PL_formtarget = PL_bodytarget;
3489 init_argv_symbols(argc,argv);
3491 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
3492 #ifdef MACOS_TRADITIONAL
3493 /* $0 is not majick on a Mac */
3494 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3496 sv_setpv(GvSV(tmpgv),PL_origfilename);
3497 magicname("0", "0", 1);
3500 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV))) {/* $^X */
3501 #ifdef HAS_PROCSELFEXE
3502 S_procself_val(aTHX_ GvSV(tmpgv), PL_origargv[0]);
3505 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
3507 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
3511 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
3513 GvMULTI_on(PL_envgv);
3514 hv = GvHVn(PL_envgv);
3515 hv_magic(hv, Nullgv, PERL_MAGIC_env);
3516 #ifdef USE_ENVIRON_ARRAY
3517 /* Note that if the supplied env parameter is actually a copy
3518 of the global environ then it may now point to free'd memory
3519 if the environment has been modified since. To avoid this
3520 problem we treat env==NULL as meaning 'use the default'
3525 environ[0] = Nullch;
3527 for (; *env; env++) {
3528 if (!(s = strchr(*env,'=')))
3535 sv = newSVpv(s+1, 0);
3536 (void)hv_store(hv, *env, s - *env, sv, 0);
3540 #endif /* USE_ENVIRON_ARRAY */
3543 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV))) {
3544 SvREADONLY_off(GvSV(tmpgv));
3545 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
3546 SvREADONLY_on(GvSV(tmpgv));
3551 S_init_perllib(pTHX)
3556 s = PerlEnv_getenv("PERL5LIB");
3558 incpush(s, TRUE, TRUE);
3560 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE);
3562 /* Treat PERL5?LIB as a possible search list logical name -- the
3563 * "natural" VMS idiom for a Unix path string. We allow each
3564 * element to be a set of |-separated directories for compatibility.
3568 if (my_trnlnm("PERL5LIB",buf,0))
3569 do { incpush(buf,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
3571 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE);
3575 /* Use the ~-expanded versions of APPLLIB (undocumented),
3576 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
3579 incpush(APPLLIB_EXP, TRUE, TRUE);
3583 incpush(ARCHLIB_EXP, FALSE, FALSE);
3585 #ifdef MACOS_TRADITIONAL
3587 struct stat tmpstatbuf;
3588 SV * privdir = NEWSV(55, 0);
3589 char * macperl = PerlEnv_getenv("MACPERL");
3594 Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl);
3595 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3596 incpush(SvPVX(privdir), TRUE, FALSE);
3597 Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl);
3598 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3599 incpush(SvPVX(privdir), TRUE, FALSE);
3601 SvREFCNT_dec(privdir);
3604 incpush(":", FALSE, FALSE);
3607 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
3610 incpush(PRIVLIB_EXP, TRUE, FALSE);
3612 incpush(PRIVLIB_EXP, FALSE, FALSE);
3616 /* sitearch is always relative to sitelib on Windows for
3617 * DLL-based path intuition to work correctly */
3618 # if !defined(WIN32)
3619 incpush(SITEARCH_EXP, FALSE, FALSE);
3625 incpush(SITELIB_EXP, TRUE, FALSE); /* this picks up sitearch as well */
3627 incpush(SITELIB_EXP, FALSE, FALSE);
3631 #ifdef SITELIB_STEM /* Search for version-specific dirs below here */
3632 incpush(SITELIB_STEM, FALSE, TRUE);
3635 #ifdef PERL_VENDORARCH_EXP
3636 /* vendorarch is always relative to vendorlib on Windows for
3637 * DLL-based path intuition to work correctly */
3638 # if !defined(WIN32)
3639 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE);
3643 #ifdef PERL_VENDORLIB_EXP
3645 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE); /* this picks up vendorarch as well */
3647 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE);
3651 #ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
3652 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE);
3655 #ifdef PERL_OTHERLIBDIRS
3656 incpush(PERL_OTHERLIBDIRS, TRUE, TRUE);
3660 incpush(".", FALSE, FALSE);
3661 #endif /* MACOS_TRADITIONAL */
3664 #if defined(DOSISH) || defined(EPOC)
3665 # define PERLLIB_SEP ';'
3668 # define PERLLIB_SEP '|'
3670 # if defined(MACOS_TRADITIONAL)
3671 # define PERLLIB_SEP ','
3673 # define PERLLIB_SEP ':'
3677 #ifndef PERLLIB_MANGLE
3678 # define PERLLIB_MANGLE(s,n) (s)
3682 S_incpush(pTHX_ char *p, int addsubdirs, int addoldvers)
3684 SV *subdir = Nullsv;
3689 if (addsubdirs || addoldvers) {
3690 subdir = sv_newmortal();
3693 /* Break at all separators */
3695 SV *libdir = NEWSV(55,0);
3698 /* skip any consecutive separators */
3699 while ( *p == PERLLIB_SEP ) {
3700 /* Uncomment the next line for PATH semantics */
3701 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
3705 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
3706 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
3711 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
3712 p = Nullch; /* break out */
3714 #ifdef MACOS_TRADITIONAL
3715 if (!strchr(SvPVX(libdir), ':'))
3716 sv_insert(libdir, 0, 0, ":", 1);
3717 if (SvPVX(libdir)[SvCUR(libdir)-1] != ':')
3718 sv_catpv(libdir, ":");
3722 * BEFORE pushing libdir onto @INC we may first push version- and
3723 * archname-specific sub-directories.
3725 if (addsubdirs || addoldvers) {
3726 #ifdef PERL_INC_VERSION_LIST
3727 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
3728 const char *incverlist[] = { PERL_INC_VERSION_LIST };
3729 const char **incver;
3731 struct stat tmpstatbuf;
3736 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
3738 while (unix[len-1] == '/') len--; /* Cosmetic */
3739 sv_usepvn(libdir,unix,len);
3742 PerlIO_printf(Perl_error_log,
3743 "Failed to unixify @INC element \"%s\"\n",
3747 #ifdef MACOS_TRADITIONAL
3748 #define PERL_AV_SUFFIX_FMT ""
3749 #define PERL_ARCH_FMT "%s:"
3750 #define PERL_ARCH_FMT_PATH PERL_FS_VER_FMT PERL_AV_SUFFIX_FMT
3752 #define PERL_AV_SUFFIX_FMT "/"
3753 #define PERL_ARCH_FMT "/%s"
3754 #define PERL_ARCH_FMT_PATH PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT
3756 /* .../version/archname if -d .../version/archname */
3757 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH PERL_ARCH_FMT,
3759 (int)PERL_REVISION, (int)PERL_VERSION,
3760 (int)PERL_SUBVERSION, ARCHNAME);
3761 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3762 S_ISDIR(tmpstatbuf.st_mode))
3763 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3765 /* .../version if -d .../version */
3766 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH, libdir,
3767 (int)PERL_REVISION, (int)PERL_VERSION,
3768 (int)PERL_SUBVERSION);
3769 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3770 S_ISDIR(tmpstatbuf.st_mode))
3771 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3773 /* .../archname if -d .../archname */
3774 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, ARCHNAME);
3775 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3776 S_ISDIR(tmpstatbuf.st_mode))
3777 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3780 #ifdef PERL_INC_VERSION_LIST
3782 for (incver = incverlist; *incver; incver++) {
3783 /* .../xxx if -d .../xxx */
3784 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, *incver);
3785 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3786 S_ISDIR(tmpstatbuf.st_mode))
3787 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3793 /* finally push this lib directory on the end of @INC */
3794 av_push(GvAVn(PL_incgv), libdir);
3798 #ifdef USE_5005THREADS
3799 STATIC struct perl_thread *
3800 S_init_main_thread(pTHX)
3802 #if !defined(PERL_IMPLICIT_CONTEXT)
3803 struct perl_thread *thr;
3807 Newz(53, thr, 1, struct perl_thread);
3808 PL_curcop = &PL_compiling;
3809 thr->interp = PERL_GET_INTERP;
3810 thr->cvcache = newHV();
3811 thr->threadsv = newAV();
3812 /* thr->threadsvp is set when find_threadsv is called */
3813 thr->specific = newAV();
3814 thr->flags = THRf_R_JOINABLE;
3815 MUTEX_INIT(&thr->mutex);
3816 /* Handcraft thrsv similarly to mess_sv */
3817 New(53, PL_thrsv, 1, SV);
3818 Newz(53, xpv, 1, XPV);
3819 SvFLAGS(PL_thrsv) = SVt_PV;
3820 SvANY(PL_thrsv) = (void*)xpv;
3821 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
3822 SvPVX(PL_thrsv) = (char*)thr;
3823 SvCUR_set(PL_thrsv, sizeof(thr));
3824 SvLEN_set(PL_thrsv, sizeof(thr));
3825 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
3826 thr->oursv = PL_thrsv;
3827 PL_chopset = " \n-";
3830 MUTEX_LOCK(&PL_threads_mutex);
3836 MUTEX_UNLOCK(&PL_threads_mutex);
3838 #ifdef HAVE_THREAD_INTERN
3839 Perl_init_thread_intern(thr);
3842 #ifdef SET_THREAD_SELF
3843 SET_THREAD_SELF(thr);
3845 thr->self = pthread_self();
3846 #endif /* SET_THREAD_SELF */
3850 * These must come after the thread self setting
3851 * because sv_setpvn does SvTAINT and the taint
3852 * fields thread selfness being set.
3854 PL_toptarget = NEWSV(0,0);
3855 sv_upgrade(PL_toptarget, SVt_PVFM);
3856 sv_setpvn(PL_toptarget, "", 0);
3857 PL_bodytarget = NEWSV(0,0);
3858 sv_upgrade(PL_bodytarget, SVt_PVFM);
3859 sv_setpvn(PL_bodytarget, "", 0);
3860 PL_formtarget = PL_bodytarget;
3861 thr->errsv = newSVpvn("", 0);
3862 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
3865 PL_peepp = MEMBER_TO_FPTR(Perl_peep);
3866 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3867 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3868 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3869 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3870 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
3872 PL_reginterp_cnt = 0;
3876 #endif /* USE_5005THREADS */
3879 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
3882 line_t oldline = CopLINE(PL_curcop);
3888 while (AvFILL(paramList) >= 0) {
3889 cv = (CV*)av_shift(paramList);
3890 if (PL_savebegin && (paramList == PL_beginav)) {
3891 /* save PL_beginav for compiler */
3892 if (! PL_beginav_save)
3893 PL_beginav_save = newAV();
3894 av_push(PL_beginav_save, (SV*)cv);
3898 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3899 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_list_body), cv);
3905 #ifndef PERL_FLEXIBLE_EXCEPTIONS
3909 (void)SvPV(atsv, len);
3912 PL_curcop = &PL_compiling;
3913 CopLINE_set(PL_curcop, oldline);
3914 if (paramList == PL_beginav)
3915 sv_catpv(atsv, "BEGIN failed--compilation aborted");
3917 Perl_sv_catpvf(aTHX_ atsv,
3918 "%s failed--call queue aborted",
3919 paramList == PL_checkav ? "CHECK"
3920 : paramList == PL_initav ? "INIT"
3922 while (PL_scopestack_ix > oldscope)
3925 Perl_croak(aTHX_ "%s", SvPVx(atsv, n_a));
3932 /* my_exit() was called */
3933 while (PL_scopestack_ix > oldscope)
3936 PL_curstash = PL_defstash;
3937 PL_curcop = &PL_compiling;
3938 CopLINE_set(PL_curcop, oldline);
3940 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
3941 if (paramList == PL_beginav)
3942 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
3944 Perl_croak(aTHX_ "%s failed--call queue aborted",
3945 paramList == PL_checkav ? "CHECK"
3946 : paramList == PL_initav ? "INIT"
3953 PL_curcop = &PL_compiling;
3954 CopLINE_set(PL_curcop, oldline);
3957 PerlIO_printf(Perl_error_log, "panic: restartop\n");
3965 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3967 S_vcall_list_body(pTHX_ va_list args)
3969 CV *cv = va_arg(args, CV*);
3970 return call_list_body(cv);
3975 S_call_list_body(pTHX_ CV *cv)
3977 PUSHMARK(PL_stack_sp);
3978 call_sv((SV*)cv, G_EVAL|G_DISCARD);
3983 Perl_my_exit(pTHX_ U32 status)
3985 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
3986 thr, (unsigned long) status));
3995 STATUS_NATIVE_SET(status);
4002 Perl_my_failure_exit(pTHX)
4005 if (vaxc$errno & 1) {
4006 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
4007 STATUS_NATIVE_SET(44);
4010 if (!vaxc$errno && errno) /* unlikely */
4011 STATUS_NATIVE_SET(44);
4013 STATUS_NATIVE_SET(vaxc$errno);
4018 STATUS_POSIX_SET(errno);
4020 exitstatus = STATUS_POSIX >> 8;
4021 if (exitstatus & 255)
4022 STATUS_POSIX_SET(exitstatus);
4024 STATUS_POSIX_SET(255);
4031 S_my_exit_jump(pTHX)
4033 register PERL_CONTEXT *cx;
4038 SvREFCNT_dec(PL_e_script);
4039 PL_e_script = Nullsv;
4042 POPSTACK_TO(PL_mainstack);
4043 if (cxstack_ix >= 0) {
4046 POPBLOCK(cx,PL_curpm);
4054 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen)
4057 p = SvPVX(PL_e_script);
4058 nl = strchr(p, '\n');
4059 nl = (nl) ? nl+1 : SvEND(PL_e_script);
4061 filter_del(read_e_script);
4064 sv_catpvn(buf_sv, p, nl-p);
4065 sv_chop(PL_e_script, nl);