3 * Copyright (c) 1987-2002 Larry Wall
5 * You may distribute under the terms of either the GNU General Public
6 * License or the Artistic License, as specified in the README file.
11 * "A ship then new they built for him/of mithril and of elven glass" --Bilbo
15 #define PERL_IN_PERL_C
17 #include "patchlevel.h" /* for local_patches */
19 /* XXX If this causes problems, set i_unistd=undef in the hint file. */
24 #if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
25 char *getenv (char *); /* Usually in <stdlib.h> */
28 static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
36 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
42 #if defined(USE_5005THREADS)
43 # define INIT_TLS_AND_INTERP \
45 if (!PL_curinterp) { \
46 PERL_SET_INTERP(my_perl); \
52 # if defined(USE_ITHREADS)
53 # define INIT_TLS_AND_INTERP \
55 if (!PL_curinterp) { \
56 PERL_SET_INTERP(my_perl); \
59 PERL_SET_THX(my_perl); \
63 PERL_SET_THX(my_perl); \
67 # define INIT_TLS_AND_INTERP \
69 if (!PL_curinterp) { \
70 PERL_SET_INTERP(my_perl); \
72 PERL_SET_THX(my_perl); \
77 #ifdef PERL_IMPLICIT_SYS
79 perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
80 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
81 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
82 struct IPerlDir* ipD, struct IPerlSock* ipS,
83 struct IPerlProc* ipP)
85 PerlInterpreter *my_perl;
86 /* New() needs interpreter, so call malloc() instead */
87 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
89 Zero(my_perl, 1, PerlInterpreter);
105 =head1 Embedding Functions
107 =for apidoc perl_alloc
109 Allocates a new Perl interpreter. See L<perlembed>.
117 PerlInterpreter *my_perl;
118 #ifdef USE_5005THREADS
122 /* New() needs interpreter, so call malloc() instead */
123 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
126 Zero(my_perl, 1, PerlInterpreter);
129 #endif /* PERL_IMPLICIT_SYS */
132 =for apidoc perl_construct
134 Initializes a new Perl interpreter. See L<perlembed>.
140 perl_construct(pTHXx)
142 #ifdef USE_5005THREADS
144 struct perl_thread *thr = NULL;
145 #endif /* FAKE_THREADS */
146 #endif /* USE_5005THREADS */
150 PL_perl_destruct_level = 1;
152 if (PL_perl_destruct_level > 0)
156 /* Init the real globals (and main thread)? */
158 #ifdef USE_5005THREADS
159 MUTEX_INIT(&PL_sv_mutex);
161 * Safe to use basic SV functions from now on (though
162 * not things like mortals or tainting yet).
164 MUTEX_INIT(&PL_eval_mutex);
165 COND_INIT(&PL_eval_cond);
166 MUTEX_INIT(&PL_threads_mutex);
167 COND_INIT(&PL_nthreads_cond);
168 # ifdef EMULATE_ATOMIC_REFCOUNTS
169 MUTEX_INIT(&PL_svref_mutex);
170 # endif /* EMULATE_ATOMIC_REFCOUNTS */
172 MUTEX_INIT(&PL_cred_mutex);
173 MUTEX_INIT(&PL_sv_lock_mutex);
174 MUTEX_INIT(&PL_fdpid_mutex);
176 thr = init_main_thread();
177 #endif /* USE_5005THREADS */
179 #ifdef PERL_FLEXIBLE_EXCEPTIONS
180 PL_protect = MEMBER_TO_FPTR(Perl_default_protect); /* for exceptions */
183 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
185 PL_linestr = NEWSV(65,79);
186 sv_upgrade(PL_linestr,SVt_PVIV);
188 if (!SvREADONLY(&PL_sv_undef)) {
189 /* set read-only and try to insure than we wont see REFCNT==0
192 SvREADONLY_on(&PL_sv_undef);
193 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
195 sv_setpv(&PL_sv_no,PL_No);
197 SvREADONLY_on(&PL_sv_no);
198 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
200 sv_setpv(&PL_sv_yes,PL_Yes);
202 SvREADONLY_on(&PL_sv_yes);
203 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
206 PL_sighandlerp = Perl_sighandler;
207 PL_pidstatus = newHV();
210 PL_rs = newSVpvn("\n", 1);
215 PL_lex_state = LEX_NOTPARSING;
221 SET_NUMERIC_STANDARD();
225 PL_patchlevel = NEWSV(0,4);
226 (void)SvUPGRADE(PL_patchlevel, SVt_PVNV);
227 if (PERL_REVISION > 127 || PERL_VERSION > 127 || PERL_SUBVERSION > 127)
228 SvGROW(PL_patchlevel, UTF8_MAXLEN*3+1);
229 s = (U8*)SvPVX(PL_patchlevel);
230 /* Build version strings using "native" characters */
231 s = uvchr_to_utf8(s, (UV)PERL_REVISION);
232 s = uvchr_to_utf8(s, (UV)PERL_VERSION);
233 s = uvchr_to_utf8(s, (UV)PERL_SUBVERSION);
235 SvCUR_set(PL_patchlevel, s - (U8*)SvPVX(PL_patchlevel));
236 SvPOK_on(PL_patchlevel);
237 SvNVX(PL_patchlevel) = (NV)PERL_REVISION
238 + ((NV)PERL_VERSION / (NV)1000)
239 #if defined(PERL_SUBVERSION) && PERL_SUBVERSION > 0
240 + ((NV)PERL_SUBVERSION / (NV)1000000)
243 SvNOK_on(PL_patchlevel); /* dual valued */
244 SvUTF8_on(PL_patchlevel);
245 SvREADONLY_on(PL_patchlevel);
248 #if defined(LOCAL_PATCH_COUNT)
249 PL_localpatches = local_patches; /* For possible -v */
252 #ifdef HAVE_INTERP_INTERN
256 PerlIO_init(aTHX); /* Hook to IO system */
258 PL_fdpid = newAV(); /* for remembering popen pids by fd */
259 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
260 PL_errors = newSVpvn("",0);
262 PL_regex_padav = newAV();
263 av_push(PL_regex_padav,(SV*)newAV()); /* First entry is an array of empty elements */
264 PL_regex_pad = AvARRAY(PL_regex_padav);
266 #ifdef USE_REENTRANT_API
267 New(31337, PL_reentrant_buffer,1, REBUF);
268 New(31337, PL_reentrant_buffer->tmbuff,1, struct tm);
271 /* Note that strtab is a rather special HV. Assumptions are made
272 about not iterating on it, and not adding tie magic to it.
273 It is properly deallocated in perl_destruct() */
276 #ifdef USE_5005THREADS
277 MUTEX_INIT(&PL_strtab_mutex);
279 HvSHAREKEYS_off(PL_strtab); /* mandatory */
280 hv_ksplit(PL_strtab, 512);
282 #if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
283 _dyld_lookup_and_bind
284 ("__environ", (unsigned long *) &environ_pointer, NULL);
287 #ifdef USE_ENVIRON_ARRAY
288 PL_origenviron = environ;
295 =for apidoc perl_destruct
297 Shuts down a Perl interpreter. See L<perlembed>.
305 volatile int destruct_level; /* 0=none, 1=full, 2=full with checks */
307 #ifdef USE_5005THREADS
310 #endif /* USE_5005THREADS */
312 /* wait for all pseudo-forked children to finish */
313 PERL_WAIT_FOR_CHILDREN;
315 #ifdef USE_5005THREADS
317 /* Pass 1 on any remaining threads: detach joinables, join zombies */
319 MUTEX_LOCK(&PL_threads_mutex);
320 DEBUG_S(PerlIO_printf(Perl_debug_log,
321 "perl_destruct: waiting for %d threads...\n",
323 for (t = thr->next; t != thr; t = t->next) {
324 MUTEX_LOCK(&t->mutex);
325 switch (ThrSTATE(t)) {
328 DEBUG_S(PerlIO_printf(Perl_debug_log,
329 "perl_destruct: joining zombie %p\n", t));
330 ThrSETSTATE(t, THRf_DEAD);
331 MUTEX_UNLOCK(&t->mutex);
334 * The SvREFCNT_dec below may take a long time (e.g. av
335 * may contain an object scalar whose destructor gets
336 * called) so we have to unlock threads_mutex and start
339 MUTEX_UNLOCK(&PL_threads_mutex);
341 SvREFCNT_dec((SV*)av);
342 DEBUG_S(PerlIO_printf(Perl_debug_log,
343 "perl_destruct: joined zombie %p OK\n", t));
345 case THRf_R_JOINABLE:
346 DEBUG_S(PerlIO_printf(Perl_debug_log,
347 "perl_destruct: detaching thread %p\n", t));
348 ThrSETSTATE(t, THRf_R_DETACHED);
350 * We unlock threads_mutex and t->mutex in the opposite order
351 * from which we locked them just so that DETACH won't
352 * deadlock if it panics. It's only a breach of good style
353 * not a bug since they are unlocks not locks.
355 MUTEX_UNLOCK(&PL_threads_mutex);
357 MUTEX_UNLOCK(&t->mutex);
360 DEBUG_S(PerlIO_printf(Perl_debug_log,
361 "perl_destruct: ignoring %p (state %u)\n",
363 MUTEX_UNLOCK(&t->mutex);
364 /* fall through and out */
367 /* We leave the above "Pass 1" loop with threads_mutex still locked */
369 /* Pass 2 on remaining threads: wait for the thread count to drop to one */
370 while (PL_nthreads > 1)
372 DEBUG_S(PerlIO_printf(Perl_debug_log,
373 "perl_destruct: final wait for %d threads\n",
375 COND_WAIT(&PL_nthreads_cond, &PL_threads_mutex);
377 /* At this point, we're the last thread */
378 MUTEX_UNLOCK(&PL_threads_mutex);
379 DEBUG_S(PerlIO_printf(Perl_debug_log, "perl_destruct: armageddon has arrived\n"));
380 MUTEX_DESTROY(&PL_threads_mutex);
381 COND_DESTROY(&PL_nthreads_cond);
383 #endif /* !defined(FAKE_THREADS) */
384 #endif /* USE_5005THREADS */
386 destruct_level = PL_perl_destruct_level;
390 if ((s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL"))) {
392 if (destruct_level < i)
399 if(PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
404 if (PL_endav && !PL_minus_c)
405 call_list(PL_scopestack_ix, PL_endav);
411 /* We must account for everything. */
413 /* Destroy the main CV and syntax tree */
415 PL_curpad = AvARRAY(PL_comppad);
416 op_free(PL_main_root);
417 PL_main_root = Nullop;
419 PL_curcop = &PL_compiling;
420 PL_main_start = Nullop;
421 SvREFCNT_dec(PL_main_cv);
425 /* Tell PerlIO we are about to tear things apart in case
426 we have layers which are using resources that should
430 PerlIO_destruct(aTHX);
432 if (PL_sv_objcount) {
434 * Try to destruct global references. We do this first so that the
435 * destructors and destructees still exist. Some sv's might remain.
436 * Non-referenced objects are on their own.
441 /* unhook hooks which will soon be, or use, destroyed data */
442 SvREFCNT_dec(PL_warnhook);
443 PL_warnhook = Nullsv;
444 SvREFCNT_dec(PL_diehook);
447 /* call exit list functions */
448 while (PL_exitlistlen-- > 0)
449 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
451 Safefree(PL_exitlist);
453 if (destruct_level == 0){
455 DEBUG_P(debprofdump());
457 #if defined(PERLIO_LAYERS)
458 /* No more IO - including error messages ! */
459 PerlIO_cleanup(aTHX);
462 /* The exit() function will do everything that needs doing. */
463 return STATUS_NATIVE_EXPORT;;
466 /* jettison our possibly duplicated environment */
467 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
468 * so we certainly shouldn't free it here
470 #if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
471 if (environ != PL_origenviron) {
474 for (i = 0; environ[i]; i++)
475 safesysfree(environ[i]);
477 /* Must use safesysfree() when working with environ. */
478 safesysfree(environ);
480 environ = PL_origenviron;
485 /* the syntax tree is shared between clones
486 * so op_free(PL_main_root) only ReREFCNT_dec's
487 * REGEXPs in the parent interpreter
488 * we need to manually ReREFCNT_dec for the clones
491 I32 i = AvFILLp(PL_regex_padav) + 1;
492 SV **ary = AvARRAY(PL_regex_padav);
496 REGEXP *re = INT2PTR(REGEXP *,SvIVX(resv));
498 if (SvFLAGS(resv) & SVf_BREAK) {
499 /* this is PL_reg_curpm, already freed
500 * flag is set in regexec.c:S_regtry
502 SvFLAGS(resv) &= ~SVf_BREAK;
504 else if(SvREPADTMP(resv)) {
505 SvREPADTMP_off(resv);
512 SvREFCNT_dec(PL_regex_padav);
513 PL_regex_padav = Nullav;
517 /* loosen bonds of global variables */
520 (void)PerlIO_close(PL_rsfp);
524 /* Filters for program text */
525 SvREFCNT_dec(PL_rsfp_filters);
526 PL_rsfp_filters = Nullav;
529 PL_preprocess = FALSE;
535 PL_doswitches = FALSE;
536 PL_dowarn = G_WARN_OFF;
537 PL_doextract = FALSE;
538 PL_sawampersand = FALSE; /* must save all match strings */
541 Safefree(PL_inplace);
543 SvREFCNT_dec(PL_patchlevel);
546 SvREFCNT_dec(PL_e_script);
547 PL_e_script = Nullsv;
550 while (--PL_origargc >= 0) {
551 Safefree(PL_origargv[PL_origargc]);
553 Safefree(PL_origargv);
555 /* magical thingies */
557 SvREFCNT_dec(PL_ofs_sv); /* $, */
560 SvREFCNT_dec(PL_ors_sv); /* $\ */
563 SvREFCNT_dec(PL_rs); /* $/ */
566 PL_multiline = 0; /* $* */
567 Safefree(PL_osname); /* $^O */
570 SvREFCNT_dec(PL_statname);
571 PL_statname = Nullsv;
574 /* defgv, aka *_ should be taken care of elsewhere */
576 /* clean up after study() */
577 SvREFCNT_dec(PL_lastscream);
578 PL_lastscream = Nullsv;
579 Safefree(PL_screamfirst);
581 Safefree(PL_screamnext);
585 Safefree(PL_efloatbuf);
586 PL_efloatbuf = Nullch;
589 /* startup and shutdown function lists */
590 SvREFCNT_dec(PL_beginav);
591 SvREFCNT_dec(PL_beginav_save);
592 SvREFCNT_dec(PL_endav);
593 SvREFCNT_dec(PL_checkav);
594 SvREFCNT_dec(PL_initav);
596 PL_beginav_save = Nullav;
601 /* shortcuts just get cleared */
607 PL_argvoutgv = Nullgv;
609 PL_stderrgv = Nullgv;
610 PL_last_in_gv = Nullgv;
612 PL_debstash = Nullhv;
614 /* reset so print() ends up where we expect */
617 SvREFCNT_dec(PL_argvout_stack);
618 PL_argvout_stack = Nullav;
620 SvREFCNT_dec(PL_modglobal);
621 PL_modglobal = Nullhv;
622 SvREFCNT_dec(PL_preambleav);
623 PL_preambleav = Nullav;
624 SvREFCNT_dec(PL_subname);
626 SvREFCNT_dec(PL_linestr);
628 SvREFCNT_dec(PL_pidstatus);
629 PL_pidstatus = Nullhv;
630 SvREFCNT_dec(PL_toptarget);
631 PL_toptarget = Nullsv;
632 SvREFCNT_dec(PL_bodytarget);
633 PL_bodytarget = Nullsv;
634 PL_formtarget = Nullsv;
636 /* free locale stuff */
637 #ifdef USE_LOCALE_COLLATE
638 Safefree(PL_collation_name);
639 PL_collation_name = Nullch;
642 #ifdef USE_LOCALE_NUMERIC
643 Safefree(PL_numeric_name);
644 PL_numeric_name = Nullch;
645 SvREFCNT_dec(PL_numeric_radix_sv);
648 /* clear utf8 character classes */
649 SvREFCNT_dec(PL_utf8_alnum);
650 SvREFCNT_dec(PL_utf8_alnumc);
651 SvREFCNT_dec(PL_utf8_ascii);
652 SvREFCNT_dec(PL_utf8_alpha);
653 SvREFCNT_dec(PL_utf8_space);
654 SvREFCNT_dec(PL_utf8_cntrl);
655 SvREFCNT_dec(PL_utf8_graph);
656 SvREFCNT_dec(PL_utf8_digit);
657 SvREFCNT_dec(PL_utf8_upper);
658 SvREFCNT_dec(PL_utf8_lower);
659 SvREFCNT_dec(PL_utf8_print);
660 SvREFCNT_dec(PL_utf8_punct);
661 SvREFCNT_dec(PL_utf8_xdigit);
662 SvREFCNT_dec(PL_utf8_mark);
663 SvREFCNT_dec(PL_utf8_toupper);
664 SvREFCNT_dec(PL_utf8_totitle);
665 SvREFCNT_dec(PL_utf8_tolower);
666 SvREFCNT_dec(PL_utf8_tofold);
667 PL_utf8_alnum = Nullsv;
668 PL_utf8_alnumc = Nullsv;
669 PL_utf8_ascii = Nullsv;
670 PL_utf8_alpha = Nullsv;
671 PL_utf8_space = Nullsv;
672 PL_utf8_cntrl = Nullsv;
673 PL_utf8_graph = Nullsv;
674 PL_utf8_digit = Nullsv;
675 PL_utf8_upper = Nullsv;
676 PL_utf8_lower = Nullsv;
677 PL_utf8_print = Nullsv;
678 PL_utf8_punct = Nullsv;
679 PL_utf8_xdigit = Nullsv;
680 PL_utf8_mark = Nullsv;
681 PL_utf8_toupper = Nullsv;
682 PL_utf8_totitle = Nullsv;
683 PL_utf8_tolower = Nullsv;
684 PL_utf8_tofold = Nullsv;
686 if (!specialWARN(PL_compiling.cop_warnings))
687 SvREFCNT_dec(PL_compiling.cop_warnings);
688 PL_compiling.cop_warnings = Nullsv;
689 if (!specialCopIO(PL_compiling.cop_io))
690 SvREFCNT_dec(PL_compiling.cop_io);
691 PL_compiling.cop_io = Nullsv;
692 CopFILE_free(&PL_compiling);
693 CopSTASH_free(&PL_compiling);
695 /* Prepare to destruct main symbol table. */
700 SvREFCNT_dec(PL_curstname);
701 PL_curstname = Nullsv;
703 /* clear queued errors */
704 SvREFCNT_dec(PL_errors);
708 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
709 if (PL_scopestack_ix != 0)
710 Perl_warner(aTHX_ WARN_INTERNAL,
711 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
712 (long)PL_scopestack_ix);
713 if (PL_savestack_ix != 0)
714 Perl_warner(aTHX_ WARN_INTERNAL,
715 "Unbalanced saves: %ld more saves than restores\n",
716 (long)PL_savestack_ix);
717 if (PL_tmps_floor != -1)
718 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced tmps: %ld more allocs than frees\n",
719 (long)PL_tmps_floor + 1);
720 if (cxstack_ix != -1)
721 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced context: %ld more PUSHes than POPs\n",
722 (long)cxstack_ix + 1);
725 /* Now absolutely destruct everything, somehow or other, loops or no. */
726 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
727 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
729 /* the 2 is for PL_fdpid and PL_strtab */
730 while (PL_sv_count > 2 && sv_clean_all())
733 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
734 SvFLAGS(PL_fdpid) |= SVt_PVAV;
735 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
736 SvFLAGS(PL_strtab) |= SVt_PVHV;
738 AvREAL_off(PL_fdpid); /* no surviving entries */
739 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
742 #ifdef HAVE_INTERP_INTERN
746 /* Destruct the global string table. */
748 /* Yell and reset the HeVAL() slots that are still holding refcounts,
749 * so that sv_free() won't fail on them.
757 max = HvMAX(PL_strtab);
758 array = HvARRAY(PL_strtab);
761 if (hent && ckWARN_d(WARN_INTERNAL)) {
762 Perl_warner(aTHX_ WARN_INTERNAL,
763 "Unbalanced string table refcount: (%d) for \"%s\"",
764 HeVAL(hent) - Nullsv, HeKEY(hent));
765 HeVAL(hent) = Nullsv;
775 SvREFCNT_dec(PL_strtab);
778 /* free the pointer table used for cloning */
779 ptr_table_free(PL_ptr_table);
782 /* free special SVs */
784 SvREFCNT(&PL_sv_yes) = 0;
785 sv_clear(&PL_sv_yes);
786 SvANY(&PL_sv_yes) = NULL;
787 SvFLAGS(&PL_sv_yes) = 0;
789 SvREFCNT(&PL_sv_no) = 0;
791 SvANY(&PL_sv_no) = NULL;
792 SvFLAGS(&PL_sv_no) = 0;
794 SvREFCNT(&PL_sv_undef) = 0;
795 SvREADONLY_off(&PL_sv_undef);
797 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
798 Perl_warner(aTHX_ WARN_INTERNAL,"Scalars leaked: %ld\n", (long)PL_sv_count);
800 #if defined(PERLIO_LAYERS)
801 /* No more IO - including error messages ! */
802 PerlIO_cleanup(aTHX);
805 Safefree(PL_origfilename);
806 Safefree(PL_reg_start_tmp);
808 Safefree(PL_reg_curpm);
809 Safefree(PL_reg_poscache);
810 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
811 Safefree(PL_op_mask);
812 Safefree(PL_psig_ptr);
813 Safefree(PL_psig_name);
814 Safefree(PL_bitcount);
815 Safefree(PL_psig_pend);
817 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
819 DEBUG_P(debprofdump());
820 #ifdef USE_5005THREADS
821 MUTEX_DESTROY(&PL_strtab_mutex);
822 MUTEX_DESTROY(&PL_sv_mutex);
823 MUTEX_DESTROY(&PL_eval_mutex);
824 MUTEX_DESTROY(&PL_cred_mutex);
825 MUTEX_DESTROY(&PL_fdpid_mutex);
826 COND_DESTROY(&PL_eval_cond);
827 #ifdef EMULATE_ATOMIC_REFCOUNTS
828 MUTEX_DESTROY(&PL_svref_mutex);
829 #endif /* EMULATE_ATOMIC_REFCOUNTS */
831 /* As the penultimate thing, free the non-arena SV for thrsv */
832 Safefree(SvPVX(PL_thrsv));
833 Safefree(SvANY(PL_thrsv));
836 #endif /* USE_5005THREADS */
838 #ifdef USE_REENTRANT_API
839 Safefree(PL_reentrant_buffer->tmbuff);
840 Safefree(PL_reentrant_buffer);
845 /* As the absolutely last thing, free the non-arena SV for mess() */
848 /* it could have accumulated taint magic */
849 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
852 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
853 moremagic = mg->mg_moremagic;
854 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
856 Safefree(mg->mg_ptr);
860 /* we know that type >= SVt_PV */
861 (void)SvOOK_off(PL_mess_sv);
862 Safefree(SvPVX(PL_mess_sv));
863 Safefree(SvANY(PL_mess_sv));
864 Safefree(PL_mess_sv);
867 return STATUS_NATIVE_EXPORT;
871 =for apidoc perl_free
873 Releases a Perl interpreter. See L<perlembed>.
881 #if defined(WIN32) || defined(NETWARE)
882 # if defined(PERL_IMPLICIT_SYS)
884 void *host = nw_internal_host;
886 void *host = w32_internal_host;
890 nw5_delete_internal_host(host);
892 win32_delete_internal_host(host);
903 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
905 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
906 PL_exitlist[PL_exitlistlen].fn = fn;
907 PL_exitlist[PL_exitlistlen].ptr = ptr;
912 =for apidoc perl_parse
914 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
920 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
925 #ifdef USE_5005THREADS
929 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
932 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
933 setuid perl scripts securely.\n");
939 /* we copy rather than point to argv
940 * since perl_clone will copy and perl_destruct
941 * has no way of knowing if we've made a copy or
945 New(0, PL_origargv, i+1, char*);
946 PL_origargv[i] = '\0';
948 PL_origargv[i] = savepv(argv[i]);
956 /* Come here if running an undumped a.out. */
958 PL_origfilename = savepv(argv[0]);
959 PL_do_undump = FALSE;
960 cxstack_ix = -1; /* start label stack again */
962 init_postdump_symbols(argc,argv,env);
967 PL_curpad = AvARRAY(PL_comppad);
968 op_free(PL_main_root);
969 PL_main_root = Nullop;
971 PL_main_start = Nullop;
972 SvREFCNT_dec(PL_main_cv);
976 oldscope = PL_scopestack_ix;
977 PL_dowarn = G_WARN_OFF;
979 #ifdef PERL_FLEXIBLE_EXCEPTIONS
980 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
986 #ifndef PERL_FLEXIBLE_EXCEPTIONS
987 parse_body(env,xsinit);
990 call_list(oldscope, PL_checkav);
997 /* my_exit() was called */
998 while (PL_scopestack_ix > oldscope)
1001 PL_curstash = PL_defstash;
1003 call_list(oldscope, PL_checkav);
1004 ret = STATUS_NATIVE_EXPORT;
1007 PerlIO_printf(Perl_error_log, "panic: top_env\n");
1015 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1017 S_vparse_body(pTHX_ va_list args)
1019 char **env = va_arg(args, char**);
1020 XSINIT_t xsinit = va_arg(args, XSINIT_t);
1022 return parse_body(env, xsinit);
1027 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
1029 int argc = PL_origargc;
1030 char **argv = PL_origargv;
1031 char *scriptname = NULL;
1033 VOL bool dosearch = FALSE;
1034 char *validarg = "";
1038 char *cddir = Nullch;
1040 sv_setpvn(PL_linestr,"",0);
1041 sv = newSVpvn("",0); /* first used for -I flags */
1045 for (argc--,argv++; argc > 0; argc--,argv++) {
1046 if (argv[0][0] != '-' || !argv[0][1])
1050 validarg = " PHOOEY ";
1059 win32_argv2utf8(argc-1, argv+1);
1062 #ifndef PERL_STRICT_CR
1086 if ((s = moreswitches(s)))
1091 if( !PL_tainting ) {
1092 PL_taint_warn = TRUE;
1099 PL_taint_warn = FALSE;
1104 #ifdef MACOS_TRADITIONAL
1105 /* ignore -e for Dev:Pseudo argument */
1106 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
1109 if (PL_euid != PL_uid || PL_egid != PL_gid)
1110 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
1112 PL_e_script = newSVpvn("",0);
1113 filter_add(read_e_script, NULL);
1116 sv_catpv(PL_e_script, s);
1118 sv_catpv(PL_e_script, argv[1]);
1122 Perl_croak(aTHX_ "No code specified for -e");
1123 sv_catpv(PL_e_script, "\n");
1126 case 'I': /* -I handled both here and in moreswitches() */
1128 if (!*++s && (s=argv[1]) != Nullch) {
1133 STRLEN len = strlen(s);
1134 p = savepvn(s, len);
1135 incpush(p, TRUE, TRUE);
1136 sv_catpvn(sv, "-I", 2);
1137 sv_catpvn(sv, p, len);
1138 sv_catpvn(sv, " ", 1);
1142 Perl_croak(aTHX_ "No directory specified for -I");
1146 PL_preprocess = TRUE;
1156 PL_preambleav = newAV();
1157 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
1159 PL_Sv = newSVpv("print myconfig();",0);
1161 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
1163 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
1165 sv_catpv(PL_Sv,"\" Compile-time options:");
1167 sv_catpv(PL_Sv," DEBUGGING");
1169 # ifdef MULTIPLICITY
1170 sv_catpv(PL_Sv," MULTIPLICITY");
1172 # ifdef USE_5005THREADS
1173 sv_catpv(PL_Sv," USE_5005THREADS");
1175 # ifdef USE_ITHREADS
1176 sv_catpv(PL_Sv," USE_ITHREADS");
1178 # ifdef USE_64_BIT_INT
1179 sv_catpv(PL_Sv," USE_64_BIT_INT");
1181 # ifdef USE_64_BIT_ALL
1182 sv_catpv(PL_Sv," USE_64_BIT_ALL");
1184 # ifdef USE_LONG_DOUBLE
1185 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1187 # ifdef USE_LARGE_FILES
1188 sv_catpv(PL_Sv," USE_LARGE_FILES");
1191 sv_catpv(PL_Sv," USE_SOCKS");
1193 # ifdef PERL_IMPLICIT_CONTEXT
1194 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1196 # ifdef PERL_IMPLICIT_SYS
1197 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1199 sv_catpv(PL_Sv,"\\n\",");
1201 #if defined(LOCAL_PATCH_COUNT)
1202 if (LOCAL_PATCH_COUNT > 0) {
1204 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
1205 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1206 if (PL_localpatches[i])
1207 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
1211 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
1214 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
1216 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
1219 sv_catpv(PL_Sv, "; \
1221 @env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; ");
1224 push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
1227 print \" \\%ENV:\\n @env\\n\" if @env; \
1228 print \" \\@INC:\\n @INC\\n\";");
1231 PL_Sv = newSVpv("config_vars(qw(",0);
1232 sv_catpv(PL_Sv, ++s);
1233 sv_catpv(PL_Sv, "))");
1236 av_push(PL_preambleav, PL_Sv);
1237 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1240 PL_doextract = TRUE;
1248 if (!*++s || isSPACE(*s)) {
1252 /* catch use of gnu style long options */
1253 if (strEQ(s, "version")) {
1257 if (strEQ(s, "help")) {
1264 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1270 #ifndef SECURE_INTERNAL_GETENV
1273 (s = PerlEnv_getenv("PERL5OPT")))
1278 if (*s == '-' && *(s+1) == 'T') {
1280 PL_taint_warn = FALSE;
1283 char *popt_copy = Nullch;
1296 if (!strchr("DIMUdmtw", *s))
1297 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
1301 popt_copy = SvPVX(sv_2mortal(newSVpv(popt,0)));
1302 s = popt_copy + (s - popt);
1303 d = popt_copy + (d - popt);
1310 if( !PL_tainting ) {
1311 PL_taint_warn = TRUE;
1321 if (PL_taint_warn && PL_dowarn != G_WARN_ALL_OFF) {
1322 PL_compiling.cop_warnings = newSVpvn(WARN_TAINTstring, WARNsize);
1326 scriptname = argv[0];
1329 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1331 else if (scriptname == Nullch) {
1333 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1341 open_script(scriptname,dosearch,sv,&fdscript);
1343 validate_suid(validarg, scriptname,fdscript);
1346 #if defined(SIGCHLD) || defined(SIGCLD)
1349 # define SIGCHLD SIGCLD
1351 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1352 if (sigstate == SIG_IGN) {
1353 if (ckWARN(WARN_SIGNAL))
1354 Perl_warner(aTHX_ WARN_SIGNAL,
1355 "Can't ignore signal CHLD, forcing to default");
1356 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1362 #ifdef MACOS_TRADITIONAL
1363 if (PL_doextract || gMacPerl_AlwaysExtract) {
1368 if (cddir && PerlDir_chdir(cddir) < 0)
1369 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1373 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1374 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1375 CvUNIQUE_on(PL_compcv);
1377 PL_comppad = newAV();
1378 av_push(PL_comppad, Nullsv);
1379 PL_curpad = AvARRAY(PL_comppad);
1380 PL_comppad_name = newAV();
1381 PL_comppad_name_fill = 0;
1382 PL_min_intro_pending = 0;
1384 #ifdef USE_5005THREADS
1385 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
1386 PL_curpad[0] = (SV*)newAV();
1387 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1388 CvOWNER(PL_compcv) = 0;
1389 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1390 MUTEX_INIT(CvMUTEXP(PL_compcv));
1391 #endif /* USE_5005THREADS */
1393 comppadlist = newAV();
1394 AvREAL_off(comppadlist);
1395 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1396 av_store(comppadlist, 1, (SV*)PL_comppad);
1397 CvPADLIST(PL_compcv) = comppadlist;
1400 boot_core_UNIVERSAL();
1402 boot_core_xsutils();
1406 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
1408 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
1414 # ifdef HAS_SOCKS5_INIT
1415 socks5_init(argv[0]);
1421 init_predump_symbols();
1422 /* init_postdump_symbols not currently designed to be called */
1423 /* more than once (ENV isn't cleared first, for example) */
1424 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
1426 init_postdump_symbols(argc,argv,env);
1430 /* now parse the script */
1432 SETERRNO(0,SS$_NORMAL);
1434 #ifdef MACOS_TRADITIONAL
1435 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1437 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1439 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1440 MacPerl_MPWFileName(PL_origfilename));
1444 if (yyparse() || PL_error_count) {
1446 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
1448 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1453 CopLINE_set(PL_curcop, 0);
1454 PL_curstash = PL_defstash;
1455 PL_preprocess = FALSE;
1457 SvREFCNT_dec(PL_e_script);
1458 PL_e_script = Nullsv;
1462 Not sure that this is still the right place to do this now that we
1463 no longer use PL_nrs. HVDS 2001/09/09
1465 sv_setsv(get_sv("/", TRUE), PL_rs);
1471 SAVECOPFILE(PL_curcop);
1472 SAVECOPLINE(PL_curcop);
1473 gv_check(PL_defstash);
1480 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1481 dump_mstats("after compilation:");
1490 =for apidoc perl_run
1492 Tells a Perl interpreter to run. See L<perlembed>.
1503 #ifdef USE_5005THREADS
1507 oldscope = PL_scopestack_ix;
1512 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1514 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1520 cxstack_ix = -1; /* start context stack again */
1522 case 0: /* normal completion */
1523 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1528 case 2: /* my_exit() */
1529 while (PL_scopestack_ix > oldscope)
1532 PL_curstash = PL_defstash;
1533 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
1534 PL_endav && !PL_minus_c)
1535 call_list(oldscope, PL_endav);
1537 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1538 dump_mstats("after execution: ");
1540 ret = STATUS_NATIVE_EXPORT;
1544 POPSTACK_TO(PL_mainstack);
1547 PerlIO_printf(Perl_error_log, "panic: restartop\n");
1557 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1559 S_vrun_body(pTHX_ va_list args)
1561 I32 oldscope = va_arg(args, I32);
1563 return run_body(oldscope);
1569 S_run_body(pTHX_ I32 oldscope)
1571 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
1572 PL_sawampersand ? "Enabling" : "Omitting"));
1574 if (!PL_restartop) {
1575 DEBUG_x(dump_all());
1576 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
1577 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1581 #ifdef MACOS_TRADITIONAL
1582 PerlIO_printf(Perl_error_log, "# %s syntax OK\n", MacPerl_MPWFileName(PL_origfilename));
1584 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
1588 if (PERLDB_SINGLE && PL_DBsingle)
1589 sv_setiv(PL_DBsingle, 1);
1591 call_list(oldscope, PL_initav);
1597 PL_op = PL_restartop;
1601 else if (PL_main_start) {
1602 CvDEPTH(PL_main_cv) = 1;
1603 PL_op = PL_main_start;
1613 =head1 SV Manipulation Functions
1615 =for apidoc p||get_sv
1617 Returns the SV of the specified Perl scalar. If C<create> is set and the
1618 Perl variable does not exist then it will be created. If C<create> is not
1619 set and the variable does not exist then NULL is returned.
1625 Perl_get_sv(pTHX_ const char *name, I32 create)
1628 #ifdef USE_5005THREADS
1629 if (name[1] == '\0' && !isALPHA(name[0])) {
1630 PADOFFSET tmp = find_threadsv(name);
1631 if (tmp != NOT_IN_PAD)
1632 return THREADSV(tmp);
1634 #endif /* USE_5005THREADS */
1635 gv = gv_fetchpv(name, create, SVt_PV);
1642 =head1 Array Manipulation Functions
1644 =for apidoc p||get_av
1646 Returns the AV of the specified Perl array. If C<create> is set and the
1647 Perl variable does not exist then it will be created. If C<create> is not
1648 set and the variable does not exist then NULL is returned.
1654 Perl_get_av(pTHX_ const char *name, I32 create)
1656 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1665 =head1 Hash Manipulation Functions
1667 =for apidoc p||get_hv
1669 Returns the HV of the specified Perl hash. If C<create> is set and the
1670 Perl variable does not exist then it will be created. If C<create> is not
1671 set and the variable does not exist then NULL is returned.
1677 Perl_get_hv(pTHX_ const char *name, I32 create)
1679 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1688 =head1 CV Manipulation Functions
1690 =for apidoc p||get_cv
1692 Returns the CV of the specified Perl subroutine. If C<create> is set and
1693 the Perl subroutine does not exist then it will be declared (which has the
1694 same effect as saying C<sub name;>). If C<create> is not set and the
1695 subroutine does not exist then NULL is returned.
1701 Perl_get_cv(pTHX_ const char *name, I32 create)
1703 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
1704 /* XXX unsafe for threads if eval_owner isn't held */
1705 /* XXX this is probably not what they think they're getting.
1706 * It has the same effect as "sub name;", i.e. just a forward
1708 if (create && !GvCVu(gv))
1709 return newSUB(start_subparse(FALSE, 0),
1710 newSVOP(OP_CONST, 0, newSVpv(name,0)),
1718 /* Be sure to refetch the stack pointer after calling these routines. */
1722 =head1 Callback Functions
1724 =for apidoc p||call_argv
1726 Performs a callback to the specified Perl sub. See L<perlcall>.
1732 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
1734 /* See G_* flags in cop.h */
1735 /* null terminated arg list */
1742 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
1747 return call_pv(sub_name, flags);
1751 =for apidoc p||call_pv
1753 Performs a callback to the specified Perl sub. See L<perlcall>.
1759 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
1760 /* name of the subroutine */
1761 /* See G_* flags in cop.h */
1763 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
1767 =for apidoc p||call_method
1769 Performs a callback to the specified Perl method. The blessed object must
1770 be on the stack. See L<perlcall>.
1776 Perl_call_method(pTHX_ const char *methname, I32 flags)
1777 /* name of the subroutine */
1778 /* See G_* flags in cop.h */
1780 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
1783 /* May be called with any of a CV, a GV, or an SV containing the name. */
1785 =for apidoc p||call_sv
1787 Performs a callback to the Perl sub whose name is in the SV. See
1794 Perl_call_sv(pTHX_ SV *sv, I32 flags)
1795 /* See G_* flags in cop.h */
1798 LOGOP myop; /* fake syntax tree node */
1801 volatile I32 retval = 0;
1803 bool oldcatch = CATCH_GET;
1808 if (flags & G_DISCARD) {
1813 Zero(&myop, 1, LOGOP);
1814 myop.op_next = Nullop;
1815 if (!(flags & G_NOARGS))
1816 myop.op_flags |= OPf_STACKED;
1817 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1818 (flags & G_ARRAY) ? OPf_WANT_LIST :
1823 EXTEND(PL_stack_sp, 1);
1824 *++PL_stack_sp = sv;
1826 oldscope = PL_scopestack_ix;
1828 if (PERLDB_SUB && PL_curstash != PL_debstash
1829 /* Handle first BEGIN of -d. */
1830 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
1831 /* Try harder, since this may have been a sighandler, thus
1832 * curstash may be meaningless. */
1833 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
1834 && !(flags & G_NODEBUG))
1835 PL_op->op_private |= OPpENTERSUB_DB;
1837 if (flags & G_METHOD) {
1838 Zero(&method_op, 1, UNOP);
1839 method_op.op_next = PL_op;
1840 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1841 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
1842 PL_op = (OP*)&method_op;
1845 if (!(flags & G_EVAL)) {
1847 call_body((OP*)&myop, FALSE);
1848 retval = PL_stack_sp - (PL_stack_base + oldmark);
1849 CATCH_SET(oldcatch);
1852 myop.op_other = (OP*)&myop;
1854 /* we're trying to emulate pp_entertry() here */
1856 register PERL_CONTEXT *cx;
1857 I32 gimme = GIMME_V;
1862 push_return(Nullop);
1863 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
1865 PL_eval_root = PL_op; /* Only needed so that goto works right. */
1867 PL_in_eval = EVAL_INEVAL;
1868 if (flags & G_KEEPERR)
1869 PL_in_eval |= EVAL_KEEPERR;
1875 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1877 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1884 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1886 call_body((OP*)&myop, FALSE);
1888 retval = PL_stack_sp - (PL_stack_base + oldmark);
1889 if (!(flags & G_KEEPERR))
1896 /* my_exit() was called */
1897 PL_curstash = PL_defstash;
1900 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1901 Perl_croak(aTHX_ "Callback called exit");
1906 PL_op = PL_restartop;
1910 PL_stack_sp = PL_stack_base + oldmark;
1911 if (flags & G_ARRAY)
1915 *++PL_stack_sp = &PL_sv_undef;
1920 if (PL_scopestack_ix > oldscope) {
1924 register PERL_CONTEXT *cx;
1936 if (flags & G_DISCARD) {
1937 PL_stack_sp = PL_stack_base + oldmark;
1946 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1948 S_vcall_body(pTHX_ va_list args)
1950 OP *myop = va_arg(args, OP*);
1951 int is_eval = va_arg(args, int);
1953 call_body(myop, is_eval);
1959 S_call_body(pTHX_ OP *myop, int is_eval)
1961 if (PL_op == myop) {
1963 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
1965 PL_op = Perl_pp_entersub(aTHX); /* this does */
1971 /* Eval a string. The G_EVAL flag is always assumed. */
1974 =for apidoc p||eval_sv
1976 Tells Perl to C<eval> the string in the SV.
1982 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
1984 /* See G_* flags in cop.h */
1987 UNOP myop; /* fake syntax tree node */
1988 volatile I32 oldmark = SP - PL_stack_base;
1989 volatile I32 retval = 0;
1995 if (flags & G_DISCARD) {
2002 Zero(PL_op, 1, UNOP);
2003 EXTEND(PL_stack_sp, 1);
2004 *++PL_stack_sp = sv;
2005 oldscope = PL_scopestack_ix;
2007 if (!(flags & G_NOARGS))
2008 myop.op_flags = OPf_STACKED;
2009 myop.op_next = Nullop;
2010 myop.op_type = OP_ENTEREVAL;
2011 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
2012 (flags & G_ARRAY) ? OPf_WANT_LIST :
2014 if (flags & G_KEEPERR)
2015 myop.op_flags |= OPf_SPECIAL;
2017 #ifdef PERL_FLEXIBLE_EXCEPTIONS
2019 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
2026 #ifndef PERL_FLEXIBLE_EXCEPTIONS
2028 call_body((OP*)&myop,TRUE);
2030 retval = PL_stack_sp - (PL_stack_base + oldmark);
2031 if (!(flags & G_KEEPERR))
2038 /* my_exit() was called */
2039 PL_curstash = PL_defstash;
2042 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
2043 Perl_croak(aTHX_ "Callback called exit");
2048 PL_op = PL_restartop;
2052 PL_stack_sp = PL_stack_base + oldmark;
2053 if (flags & G_ARRAY)
2057 *++PL_stack_sp = &PL_sv_undef;
2063 if (flags & G_DISCARD) {
2064 PL_stack_sp = PL_stack_base + oldmark;
2074 =for apidoc p||eval_pv
2076 Tells Perl to C<eval> the given string and return an SV* result.
2082 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
2085 SV* sv = newSVpv(p, 0);
2087 eval_sv(sv, G_SCALAR);
2094 if (croak_on_error && SvTRUE(ERRSV)) {
2096 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
2102 /* Require a module. */
2105 =head1 Embedding Functions
2107 =for apidoc p||require_pv
2109 Tells Perl to C<require> the file named by the string argument. It is
2110 analogous to the Perl code C<eval "require '$file'">. It's even
2111 implemented that way; consider using Perl_load_module instead.
2116 Perl_require_pv(pTHX_ const char *pv)
2120 PUSHSTACKi(PERLSI_REQUIRE);
2122 sv = sv_newmortal();
2123 sv_setpv(sv, "require '");
2126 eval_sv(sv, G_DISCARD);
2132 Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
2136 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
2137 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
2141 S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
2143 /* This message really ought to be max 23 lines.
2144 * Removed -h because the user already knows that option. Others? */
2146 static char *usage_msg[] = {
2147 "-0[octal] specify record separator (\\0, if no argument)",
2148 "-a autosplit mode with -n or -p (splits $_ into @F)",
2149 "-C enable native wide character system interfaces",
2150 "-c check syntax only (runs BEGIN and CHECK blocks)",
2151 "-d[:debugger] run program under debugger",
2152 "-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2153 "-e 'command' one line of program (several -e's allowed, omit programfile)",
2154 "-F/pattern/ split() pattern for -a switch (//'s are optional)",
2155 "-i[extension] edit <> files in place (makes backup if extension supplied)",
2156 "-Idirectory specify @INC/#include directory (several -I's allowed)",
2157 "-l[octal] enable line ending processing, specifies line terminator",
2158 "-[mM][-]module execute `use/no module...' before executing program",
2159 "-n assume 'while (<>) { ... }' loop around program",
2160 "-p assume loop like -n but print line also, like sed",
2161 "-P run program through C preprocessor before compilation",
2162 "-s enable rudimentary parsing for switches after programfile",
2163 "-S look for programfile using PATH environment variable",
2164 "-T enable tainting checks",
2165 "-u dump core after parsing program",
2166 "-U allow unsafe operations",
2167 "-v print version, subversion (includes VERY IMPORTANT perl info)",
2168 "-V[:variable] print configuration summary (or a single Config.pm variable)",
2169 "-w enable many useful warnings (RECOMMENDED)",
2170 "-W enable all warnings",
2171 "-X disable all warnings",
2172 "-x[directory] strip off text before #!perl line and perhaps cd to directory",
2176 char **p = usage_msg;
2178 PerlIO_printf(PerlIO_stdout(),
2179 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2182 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
2185 /* This routine handles any switches that can be given during run */
2188 Perl_moreswitches(pTHX_ char *s)
2198 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
2199 SvREFCNT_dec(PL_rs);
2200 if (rschar & ~((U8)~0))
2201 PL_rs = &PL_sv_undef;
2202 else if (!rschar && numlen >= 2)
2203 PL_rs = newSVpvn("", 0);
2206 PL_rs = newSVpvn(&ch, 1);
2211 PL_widesyscalls = TRUE;
2217 while (*s && !isSPACE(*s)) ++s;
2219 PL_splitstr = savepv(PL_splitstr);
2232 /* The following permits -d:Mod to accepts arguments following an =
2233 in the fashion that -MSome::Mod does. */
2234 if (*s == ':' || *s == '=') {
2237 sv = newSVpv("use Devel::", 0);
2239 /* We now allow -d:Module=Foo,Bar */
2240 while(isALNUM(*s) || *s==':') ++s;
2242 sv_catpv(sv, start);
2244 sv_catpvn(sv, start, s-start);
2245 sv_catpv(sv, " split(/,/,q{");
2250 my_setenv("PERL5DB", SvPV(sv, PL_na));
2253 PL_perldb = PERLDB_ALL;
2261 if (isALPHA(s[1])) {
2262 /* if adding extra options, remember to update DEBUG_MASK */
2263 static char debopts[] = "psltocPmfrxuLHXDSTRJ";
2266 for (s++; *s && (d = strchr(debopts,*s)); s++)
2267 PL_debug |= 1 << (d - debopts);
2270 PL_debug = atoi(s+1);
2271 for (s++; isDIGIT(*s); s++) ;
2273 PL_debug |= DEBUG_TOP_FLAG;
2275 if (ckWARN_d(WARN_DEBUGGING))
2276 Perl_warner(aTHX_ WARN_DEBUGGING,
2277 "Recompile perl with -DDEBUGGING to use -D switch\n");
2278 for (s++; isALNUM(*s); s++) ;
2284 usage(PL_origargv[0]);
2288 Safefree(PL_inplace);
2289 PL_inplace = savepv(s+1);
2291 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
2294 if (*s == '-') /* Additional switches on #! line. */
2298 case 'I': /* -I handled both here and in parse_body() */
2301 while (*s && isSPACE(*s))
2306 /* ignore trailing spaces (possibly followed by other switches) */
2308 for (e = p; *e && !isSPACE(*e); e++) ;
2312 } while (*p && *p != '-');
2313 e = savepvn(s, e-s);
2314 incpush(e, TRUE, TRUE);
2321 Perl_croak(aTHX_ "No directory specified for -I");
2327 SvREFCNT_dec(PL_ors_sv);
2332 PL_ors_sv = newSVpvn("\n",1);
2333 numlen = 3 + (*s == '0');
2334 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
2338 if (RsPARA(PL_rs)) {
2339 PL_ors_sv = newSVpvn("\n\n",2);
2342 PL_ors_sv = newSVsv(PL_rs);
2347 forbid_setid("-M"); /* XXX ? */
2350 forbid_setid("-m"); /* XXX ? */
2355 /* -M-foo == 'no foo' */
2356 if (*s == '-') { use = "no "; ++s; }
2357 sv = newSVpv(use,0);
2359 /* We allow -M'Module qw(Foo Bar)' */
2360 while(isALNUM(*s) || *s==':') ++s;
2362 sv_catpv(sv, start);
2363 if (*(start-1) == 'm') {
2365 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
2366 sv_catpv( sv, " ()");
2370 Perl_croak(aTHX_ "Module name required with -%c option",
2372 sv_catpvn(sv, start, s-start);
2373 sv_catpv(sv, " split(/,/,q{");
2379 PL_preambleav = newAV();
2380 av_push(PL_preambleav, sv);
2383 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
2395 PL_doswitches = TRUE;
2400 Perl_croak(aTHX_ "Too late for \"-t\" option");
2405 Perl_croak(aTHX_ "Too late for \"-T\" option");
2409 #ifdef MACOS_TRADITIONAL
2410 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2412 PL_do_undump = TRUE;
2421 PerlIO_printf(PerlIO_stdout(),
2422 Perl_form(aTHX_ "\nThis is perl, v%"VDf" built for %s",
2423 PL_patchlevel, ARCHNAME));
2425 /* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
2426 PerlIO_printf(PerlIO_stdout(),
2427 Perl_form(aTHX_ "\nThis is perl, version %vd\n", PL_patchlevel));
2428 PerlIO_printf(PerlIO_stdout(),
2429 Perl_form(aTHX_ " built under %s at %s %s\n",
2430 OSNAME, __DATE__, __TIME__));
2431 PerlIO_printf(PerlIO_stdout(),
2432 Perl_form(aTHX_ " OS Specific Release: %s\n",
2436 #if defined(LOCAL_PATCH_COUNT)
2437 if (LOCAL_PATCH_COUNT > 0)
2438 PerlIO_printf(PerlIO_stdout(),
2439 "\n(with %d registered patch%s, "
2440 "see perl -V for more detail)",
2441 (int)LOCAL_PATCH_COUNT,
2442 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
2445 PerlIO_printf(PerlIO_stdout(),
2446 "\n\nCopyright 1987-2002, Larry Wall\n");
2447 #ifdef MACOS_TRADITIONAL
2448 PerlIO_printf(PerlIO_stdout(),
2449 "\nMac OS port Copyright 1991-2002, Matthias Neeracher;\n"
2450 "maintained by Chris Nandor\n");
2453 PerlIO_printf(PerlIO_stdout(),
2454 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
2457 PerlIO_printf(PerlIO_stdout(),
2458 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2459 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
2462 PerlIO_printf(PerlIO_stdout(),
2463 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2464 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
2467 PerlIO_printf(PerlIO_stdout(),
2468 "atariST series port, ++jrb bammi@cadence.com\n");
2471 PerlIO_printf(PerlIO_stdout(),
2472 "BeOS port Copyright Tom Spindler, 1997-1999\n");
2475 PerlIO_printf(PerlIO_stdout(),
2476 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2002\n");
2479 PerlIO_printf(PerlIO_stdout(),
2480 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
2483 PerlIO_printf(PerlIO_stdout(),
2484 "Stratus VOS port by Paul_Green@stratus.com, 1997-2002\n");
2487 PerlIO_printf(PerlIO_stdout(),
2488 "VM/ESA port by Neale Ferguson, 1998-1999\n");
2491 PerlIO_printf(PerlIO_stdout(),
2492 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
2495 PerlIO_printf(PerlIO_stdout(),
2496 "MiNT port by Guido Flohr, 1997-1999\n");
2499 PerlIO_printf(PerlIO_stdout(),
2500 "EPOC port by Olaf Flebbe, 1999-2002\n");
2503 printf("WINCE port by Rainer Keuchel, 2001-2002\n");
2504 printf("Built on " __DATE__ " " __TIME__ "\n\n");
2507 #ifdef BINARY_BUILD_NOTICE
2508 BINARY_BUILD_NOTICE;
2510 PerlIO_printf(PerlIO_stdout(),
2512 Perl may be copied only under the terms of either the Artistic License or the\n\
2513 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
2514 Complete documentation for Perl, including FAQ lists, should be found on\n\
2515 this system using `man perl' or `perldoc perl'. If you have access to the\n\
2516 Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
2519 if (! (PL_dowarn & G_WARN_ALL_MASK))
2520 PL_dowarn |= G_WARN_ON;
2524 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
2525 if (!specialWARN(PL_compiling.cop_warnings))
2526 SvREFCNT_dec(PL_compiling.cop_warnings);
2527 PL_compiling.cop_warnings = pWARN_ALL ;
2531 PL_dowarn = G_WARN_ALL_OFF;
2532 if (!specialWARN(PL_compiling.cop_warnings))
2533 SvREFCNT_dec(PL_compiling.cop_warnings);
2534 PL_compiling.cop_warnings = pWARN_NONE ;
2539 if (s[1] == '-') /* Additional switches on #! line. */
2544 #if defined(WIN32) || !defined(PERL_STRICT_CR)
2550 #ifdef ALTERNATE_SHEBANG
2551 case 'S': /* OS/2 needs -S on "extproc" line. */
2559 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
2564 /* compliments of Tom Christiansen */
2566 /* unexec() can be found in the Gnu emacs distribution */
2567 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
2570 Perl_my_unexec(pTHX)
2578 prog = newSVpv(BIN_EXP, 0);
2579 sv_catpv(prog, "/perl");
2580 file = newSVpv(PL_origfilename, 0);
2581 sv_catpv(file, ".perldump");
2583 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2584 /* unexec prints msg to stderr in case of failure */
2585 PerlProc_exit(status);
2588 # include <lib$routines.h>
2589 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
2591 ABORT(); /* for use with undump */
2596 /* initialize curinterp */
2602 # define PERLVAR(var,type)
2603 # define PERLVARA(var,n,type)
2604 # if defined(PERL_IMPLICIT_CONTEXT)
2605 # if defined(USE_5005THREADS)
2606 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2607 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2608 # else /* !USE_5005THREADS */
2609 # define PERLVARI(var,type,init) aTHX->var = init;
2610 # define PERLVARIC(var,type,init) aTHX->var = init;
2611 # endif /* USE_5005THREADS */
2613 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2614 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2616 # include "intrpvar.h"
2617 # ifndef USE_5005THREADS
2618 # include "thrdvar.h"
2625 # define PERLVAR(var,type)
2626 # define PERLVARA(var,n,type)
2627 # define PERLVARI(var,type,init) PL_##var = init;
2628 # define PERLVARIC(var,type,init) PL_##var = init;
2629 # include "intrpvar.h"
2630 # ifndef USE_5005THREADS
2631 # include "thrdvar.h"
2642 S_init_main_stash(pTHX)
2648 PL_curstash = PL_defstash = newHV();
2649 PL_curstname = newSVpvn("main",4);
2650 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2651 SvREFCNT_dec(GvHV(gv));
2652 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
2654 HvNAME(PL_defstash) = savepv("main");
2655 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2656 GvMULTI_on(PL_incgv);
2657 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2658 GvMULTI_on(PL_hintgv);
2659 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2660 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2661 GvMULTI_on(PL_errgv);
2662 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2663 GvMULTI_on(PL_replgv);
2664 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
2665 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2666 sv_setpvn(ERRSV, "", 0);
2667 PL_curstash = PL_defstash;
2668 CopSTASH_set(&PL_compiling, PL_defstash);
2669 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
2670 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
2671 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
2672 /* We must init $/ before switches are processed. */
2673 sv_setpvn(get_sv("/", TRUE), "\n", 1);
2677 S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
2681 char *cpp_discard_flag;
2687 PL_origfilename = savepv("-e");
2690 /* if find_script() returns, it returns a malloc()-ed value */
2691 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
2693 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2694 char *s = scriptname + 8;
2695 *fdscript = atoi(s);
2699 scriptname = savepv(s + 1);
2700 Safefree(PL_origfilename);
2701 PL_origfilename = scriptname;
2706 CopFILE_free(PL_curcop);
2707 CopFILE_set(PL_curcop, PL_origfilename);
2708 if (strEQ(PL_origfilename,"-"))
2710 if (*fdscript >= 0) {
2711 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
2712 # if defined(HAS_FCNTL) && defined(F_SETFD)
2714 /* ensure close-on-exec */
2715 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1);
2718 else if (PL_preprocess) {
2719 char *cpp_cfg = CPPSTDIN;
2720 SV *cpp = newSVpvn("",0);
2721 SV *cmd = NEWSV(0,0);
2723 if (strEQ(cpp_cfg, "cppstdin"))
2724 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
2725 sv_catpv(cpp, cpp_cfg);
2728 sv_catpvn(sv, "-I", 2);
2729 sv_catpv(sv,PRIVLIB_EXP);
2732 DEBUG_P(PerlIO_printf(Perl_debug_log,
2733 "PL_preprocess: scriptname=\"%s\", cpp=\"%s\", sv=\"%s\", CPPMINUS=\"%s\"\n",
2734 scriptname, SvPVX (cpp), SvPVX (sv), CPPMINUS));
2736 # if defined(MSDOS) || defined(WIN32) || defined(VMS)
2743 cpp_discard_flag = "";
2745 cpp_discard_flag = "-C";
2749 perl = os2_execname(aTHX);
2751 perl = PL_origargv[0];
2755 /* This strips off Perl comments which might interfere with
2756 the C pre-processor, including #!. #line directives are
2757 deliberately stripped to avoid confusion with Perl's version
2758 of #line. FWP played some golf with it so it will fit
2759 into VMS's 255 character buffer.
2762 code = "(1../^#!.*perl/i)|/^\\s*#(?!\\s*((ifn?|un)def|(el|end)?if|define|include|else|error|pragma)\\b)/||!($|=1)||print";
2764 code = "/^\\s*#(?!\\s*((ifn?|un)def|(el|end)?if|define|include|else|error|pragma)\\b)/||!($|=1)||print";
2766 Perl_sv_setpvf(aTHX_ cmd, "\
2767 %s -ne%s%s%s %s | %"SVf" %s %"SVf" %s",
2768 perl, quote, code, quote, scriptname, cpp,
2769 cpp_discard_flag, sv, CPPMINUS);
2771 PL_doextract = FALSE;
2772 # ifdef IAMSUID /* actually, this is caught earlier */
2773 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
2775 (void)seteuid(PL_uid); /* musn't stay setuid root */
2777 # ifdef HAS_SETREUID
2778 (void)setreuid((Uid_t)-1, PL_uid);
2780 # ifdef HAS_SETRESUID
2781 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
2783 PerlProc_setuid(PL_uid);
2787 if (PerlProc_geteuid() != PL_uid)
2788 Perl_croak(aTHX_ "Can't do seteuid!\n");
2790 # endif /* IAMSUID */
2792 DEBUG_P(PerlIO_printf(Perl_debug_log,
2793 "PL_preprocess: cmd=\"%s\"\n",
2796 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
2800 else if (!*scriptname) {
2801 forbid_setid("program input from stdin");
2802 PL_rsfp = PerlIO_stdin();
2805 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
2806 # if defined(HAS_FCNTL) && defined(F_SETFD)
2808 /* ensure close-on-exec */
2809 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1);
2814 # ifndef IAMSUID /* in case script is not readable before setuid */
2816 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
2817 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2820 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT,
2821 BIN_EXP, (int)PERL_REVISION,
2823 (int)PERL_SUBVERSION), PL_origargv);
2824 Perl_croak(aTHX_ "Can't do setuid\n");
2830 Perl_croak(aTHX_ "Can't open perl script: %s\n",
2833 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
2834 CopFILE(PL_curcop), Strerror(errno));
2840 * I_SYSSTATVFS HAS_FSTATVFS
2842 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
2843 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2844 * here so that metaconfig picks them up. */
2848 S_fd_on_nosuid_fs(pTHX_ int fd)
2850 int check_okay = 0; /* able to do all the required sys/libcalls */
2851 int on_nosuid = 0; /* the fd is on a nosuid fs */
2853 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
2854 * fstatvfs() is UNIX98.
2855 * fstatfs() is 4.3 BSD.
2856 * ustat()+getmnt() is pre-4.3 BSD.
2857 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2858 * an irrelevant filesystem while trying to reach the right one.
2861 #undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2863 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2864 defined(HAS_FSTATVFS)
2865 # define FD_ON_NOSUID_CHECK_OKAY
2866 struct statvfs stfs;
2868 check_okay = fstatvfs(fd, &stfs) == 0;
2869 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
2870 # endif /* fstatvfs */
2872 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2873 defined(PERL_MOUNT_NOSUID) && \
2874 defined(HAS_FSTATFS) && \
2875 defined(HAS_STRUCT_STATFS) && \
2876 defined(HAS_STRUCT_STATFS_F_FLAGS)
2877 # define FD_ON_NOSUID_CHECK_OKAY
2880 check_okay = fstatfs(fd, &stfs) == 0;
2881 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
2882 # endif /* fstatfs */
2884 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2885 defined(PERL_MOUNT_NOSUID) && \
2886 defined(HAS_FSTAT) && \
2887 defined(HAS_USTAT) && \
2888 defined(HAS_GETMNT) && \
2889 defined(HAS_STRUCT_FS_DATA) && \
2891 # define FD_ON_NOSUID_CHECK_OKAY
2894 if (fstat(fd, &fdst) == 0) {
2896 if (ustat(fdst.st_dev, &us) == 0) {
2898 /* NOSTAT_ONE here because we're not examining fields which
2899 * vary between that case and STAT_ONE. */
2900 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
2901 size_t cmplen = sizeof(us.f_fname);
2902 if (sizeof(fsd.fd_req.path) < cmplen)
2903 cmplen = sizeof(fsd.fd_req.path);
2904 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2905 fdst.st_dev == fsd.fd_req.dev) {
2907 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2913 # endif /* fstat+ustat+getmnt */
2915 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2916 defined(HAS_GETMNTENT) && \
2917 defined(HAS_HASMNTOPT) && \
2918 defined(MNTOPT_NOSUID)
2919 # define FD_ON_NOSUID_CHECK_OKAY
2920 FILE *mtab = fopen("/etc/mtab", "r");
2921 struct mntent *entry;
2922 struct stat stb, fsb;
2924 if (mtab && (fstat(fd, &stb) == 0)) {
2925 while (entry = getmntent(mtab)) {
2926 if (stat(entry->mnt_dir, &fsb) == 0
2927 && fsb.st_dev == stb.st_dev)
2929 /* found the filesystem */
2931 if (hasmntopt(entry, MNTOPT_NOSUID))
2934 } /* A single fs may well fail its stat(). */
2939 # endif /* getmntent+hasmntopt */
2942 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
2945 #endif /* IAMSUID */
2948 S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
2954 /* do we need to emulate setuid on scripts? */
2956 /* This code is for those BSD systems that have setuid #! scripts disabled
2957 * in the kernel because of a security problem. Merely defining DOSUID
2958 * in perl will not fix that problem, but if you have disabled setuid
2959 * scripts in the kernel, this will attempt to emulate setuid and setgid
2960 * on scripts that have those now-otherwise-useless bits set. The setuid
2961 * root version must be called suidperl or sperlN.NNN. If regular perl
2962 * discovers that it has opened a setuid script, it calls suidperl with
2963 * the same argv that it had. If suidperl finds that the script it has
2964 * just opened is NOT setuid root, it sets the effective uid back to the
2965 * uid. We don't just make perl setuid root because that loses the
2966 * effective uid we had before invoking perl, if it was different from the
2969 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2970 * be defined in suidperl only. suidperl must be setuid root. The
2971 * Configure script will set this up for you if you want it.
2977 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
2978 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
2979 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
2984 #ifndef HAS_SETREUID
2985 /* On this access check to make sure the directories are readable,
2986 * there is actually a small window that the user could use to make
2987 * filename point to an accessible directory. So there is a faint
2988 * chance that someone could execute a setuid script down in a
2989 * non-accessible directory. I don't know what to do about that.
2990 * But I don't think it's too important. The manual lies when
2991 * it says access() is useful in setuid programs.
2993 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
2994 Perl_croak(aTHX_ "Permission denied");
2996 /* If we can swap euid and uid, then we can determine access rights
2997 * with a simple stat of the file, and then compare device and
2998 * inode to make sure we did stat() on the same file we opened.
2999 * Then we just have to make sure he or she can execute it.
3002 struct stat tmpstatbuf;
3006 setreuid(PL_euid,PL_uid) < 0
3009 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
3012 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
3013 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
3014 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
3015 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
3016 #if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
3017 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
3018 Perl_croak(aTHX_ "Permission denied");
3020 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
3021 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
3022 (void)PerlIO_close(PL_rsfp);
3023 Perl_croak(aTHX_ "Permission denied\n");
3027 setreuid(PL_uid,PL_euid) < 0
3029 # if defined(HAS_SETRESUID)
3030 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
3033 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
3034 Perl_croak(aTHX_ "Can't reswap uid and euid");
3035 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
3036 Perl_croak(aTHX_ "Permission denied\n");
3038 #endif /* HAS_SETREUID */
3039 #endif /* IAMSUID */
3041 if (!S_ISREG(PL_statbuf.st_mode))
3042 Perl_croak(aTHX_ "Permission denied");
3043 if (PL_statbuf.st_mode & S_IWOTH)
3044 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
3045 PL_doswitches = FALSE; /* -s is insecure in suid */
3046 CopLINE_inc(PL_curcop);
3047 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
3048 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
3049 Perl_croak(aTHX_ "No #! line");
3050 s = SvPV(PL_linestr,n_a)+2;
3052 while (!isSPACE(*s)) s++;
3053 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
3054 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
3055 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
3056 Perl_croak(aTHX_ "Not a perl script");
3057 while (*s == ' ' || *s == '\t') s++;
3059 * #! arg must be what we saw above. They can invoke it by
3060 * mentioning suidperl explicitly, but they may not add any strange
3061 * arguments beyond what #! says if they do invoke suidperl that way.
3063 len = strlen(validarg);
3064 if (strEQ(validarg," PHOOEY ") ||
3065 strnNE(s,validarg,len) || !isSPACE(s[len]))
3066 Perl_croak(aTHX_ "Args must match #! line");
3069 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
3070 PL_euid == PL_statbuf.st_uid)
3072 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3073 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3074 #endif /* IAMSUID */
3076 if (PL_euid) { /* oops, we're not the setuid root perl */
3077 (void)PerlIO_close(PL_rsfp);
3080 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
3081 (int)PERL_REVISION, (int)PERL_VERSION,
3082 (int)PERL_SUBVERSION), PL_origargv);
3084 Perl_croak(aTHX_ "Can't do setuid\n");
3087 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
3089 (void)setegid(PL_statbuf.st_gid);
3092 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
3094 #ifdef HAS_SETRESGID
3095 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
3097 PerlProc_setgid(PL_statbuf.st_gid);
3101 if (PerlProc_getegid() != PL_statbuf.st_gid)
3102 Perl_croak(aTHX_ "Can't do setegid!\n");
3104 if (PL_statbuf.st_mode & S_ISUID) {
3105 if (PL_statbuf.st_uid != PL_euid)
3107 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
3110 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
3112 #ifdef HAS_SETRESUID
3113 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
3115 PerlProc_setuid(PL_statbuf.st_uid);
3119 if (PerlProc_geteuid() != PL_statbuf.st_uid)
3120 Perl_croak(aTHX_ "Can't do seteuid!\n");
3122 else if (PL_uid) { /* oops, mustn't run as root */
3124 (void)seteuid((Uid_t)PL_uid);
3127 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
3129 #ifdef HAS_SETRESUID
3130 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
3132 PerlProc_setuid((Uid_t)PL_uid);
3136 if (PerlProc_geteuid() != PL_uid)
3137 Perl_croak(aTHX_ "Can't do seteuid!\n");
3140 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
3141 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
3144 else if (PL_preprocess)
3145 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
3146 else if (fdscript >= 0)
3147 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
3149 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
3151 /* We absolutely must clear out any saved ids here, so we */
3152 /* exec the real perl, substituting fd script for scriptname. */
3153 /* (We pass script name as "subdir" of fd, which perl will grok.) */
3154 PerlIO_rewind(PL_rsfp);
3155 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
3156 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3157 if (!PL_origargv[which])
3158 Perl_croak(aTHX_ "Permission denied");
3159 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
3160 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
3161 #if defined(HAS_FCNTL) && defined(F_SETFD)
3162 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
3164 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
3165 (int)PERL_REVISION, (int)PERL_VERSION,
3166 (int)PERL_SUBVERSION), PL_origargv);/* try again */
3167 Perl_croak(aTHX_ "Can't do setuid\n");
3168 #endif /* IAMSUID */
3170 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
3171 #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
3172 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3173 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3175 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3178 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3179 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3180 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3181 /* not set-id, must be wrapped */
3187 S_find_beginning(pTHX)
3189 register char *s, *s2;
3191 /* skip forward in input to the real script? */
3194 #ifdef MACOS_TRADITIONAL
3195 /* Since the Mac OS does not honor #! arguments for us, we do it ourselves */
3197 while (PL_doextract || gMacPerl_AlwaysExtract) {
3198 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3199 if (!gMacPerl_AlwaysExtract)
3200 Perl_croak(aTHX_ "No Perl script found in input\n");
3202 if (PL_doextract) /* require explicit override ? */
3203 if (!OverrideExtract(PL_origfilename))
3204 Perl_croak(aTHX_ "User aborted script\n");
3206 PL_doextract = FALSE;
3208 /* Pater peccavi, file does not have #! */
3209 PerlIO_rewind(PL_rsfp);
3214 while (PL_doextract) {
3215 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
3216 Perl_croak(aTHX_ "No Perl script found in input\n");
3219 if (*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))) {
3220 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3221 PL_doextract = FALSE;
3222 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3224 while (*s == ' ' || *s == '\t') s++;
3226 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3227 if (strnEQ(s2-4,"perl",4))
3229 while ((s = moreswitches(s)))
3232 #ifdef MACOS_TRADITIONAL
3243 PL_uid = PerlProc_getuid();
3244 PL_euid = PerlProc_geteuid();
3245 PL_gid = PerlProc_getgid();
3246 PL_egid = PerlProc_getegid();
3248 PL_uid |= PL_gid << 16;
3249 PL_euid |= PL_egid << 16;
3251 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3255 S_forbid_setid(pTHX_ char *s)
3257 if (PL_euid != PL_uid)
3258 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3259 if (PL_egid != PL_gid)
3260 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
3264 Perl_init_debugger(pTHX)
3266 HV *ostash = PL_curstash;
3268 PL_curstash = PL_debstash;
3269 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3270 AvREAL_off(PL_dbargs);
3271 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3272 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3273 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
3274 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3275 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
3276 sv_setiv(PL_DBsingle, 0);
3277 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
3278 sv_setiv(PL_DBtrace, 0);
3279 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
3280 sv_setiv(PL_DBsignal, 0);
3281 PL_curstash = ostash;
3284 #ifndef STRESS_REALLOC
3285 #define REASONABLE(size) (size)
3287 #define REASONABLE(size) (1) /* unreasonable */
3291 Perl_init_stacks(pTHX)
3293 /* start with 128-item stack and 8K cxstack */
3294 PL_curstackinfo = new_stackinfo(REASONABLE(128),
3295 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3296 PL_curstackinfo->si_type = PERLSI_MAIN;
3297 PL_curstack = PL_curstackinfo->si_stack;
3298 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
3300 PL_stack_base = AvARRAY(PL_curstack);
3301 PL_stack_sp = PL_stack_base;
3302 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
3304 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3307 PL_tmps_max = REASONABLE(128);
3309 New(54,PL_markstack,REASONABLE(32),I32);
3310 PL_markstack_ptr = PL_markstack;
3311 PL_markstack_max = PL_markstack + REASONABLE(32);
3315 New(54,PL_scopestack,REASONABLE(32),I32);
3316 PL_scopestack_ix = 0;
3317 PL_scopestack_max = REASONABLE(32);
3319 New(54,PL_savestack,REASONABLE(128),ANY);
3320 PL_savestack_ix = 0;
3321 PL_savestack_max = REASONABLE(128);
3323 New(54,PL_retstack,REASONABLE(16),OP*);
3325 PL_retstack_max = REASONABLE(16);
3333 while (PL_curstackinfo->si_next)
3334 PL_curstackinfo = PL_curstackinfo->si_next;
3335 while (PL_curstackinfo) {
3336 PERL_SI *p = PL_curstackinfo->si_prev;
3337 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3338 Safefree(PL_curstackinfo->si_cxstack);
3339 Safefree(PL_curstackinfo);
3340 PL_curstackinfo = p;
3342 Safefree(PL_tmps_stack);
3343 Safefree(PL_markstack);
3344 Safefree(PL_scopestack);
3345 Safefree(PL_savestack);
3346 Safefree(PL_retstack);
3355 lex_start(PL_linestr);
3357 PL_subname = newSVpvn("main",4);
3361 S_init_predump_symbols(pTHX)
3366 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3367 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3368 GvMULTI_on(PL_stdingv);
3369 io = GvIOp(PL_stdingv);
3370 IoTYPE(io) = IoTYPE_RDONLY;
3371 IoIFP(io) = PerlIO_stdin();
3372 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
3374 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3376 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
3379 IoTYPE(io) = IoTYPE_WRONLY;
3380 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
3382 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
3384 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3386 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3387 GvMULTI_on(PL_stderrgv);
3388 io = GvIOp(PL_stderrgv);
3389 IoTYPE(io) = IoTYPE_WRONLY;
3390 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
3391 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
3393 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3395 PL_statname = NEWSV(66,0); /* last filename we did stat on */
3398 Safefree(PL_osname);
3399 PL_osname = savepv(OSNAME);
3403 Perl_init_argv_symbols(pTHX_ register int argc, register char **argv)
3406 argc--,argv++; /* skip name of script */
3407 if (PL_doswitches) {
3408 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3411 if (argv[0][1] == '-' && !argv[0][2]) {
3415 if ((s = strchr(argv[0], '='))) {
3417 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
3420 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
3423 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3424 GvMULTI_on(PL_argvgv);
3425 (void)gv_AVadd(PL_argvgv);
3426 av_clear(GvAVn(PL_argvgv));
3427 for (; argc > 0; argc--,argv++) {
3428 SV *sv = newSVpv(argv[0],0);
3429 av_push(GvAVn(PL_argvgv),sv);
3430 if (PL_widesyscalls)
3431 (void)sv_utf8_decode(sv);
3436 #ifdef HAS_PROCSELFEXE
3437 /* This is a function so that we don't hold on to MAXPATHLEN
3438 bytes of stack longer than necessary
3441 S_procself_val(pTHX_ SV *sv, char *arg0)
3443 char buf[MAXPATHLEN];
3444 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
3446 sv_setpvn(sv,buf,len);
3452 #endif /* HAS_PROCSELFEXE */
3455 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
3461 PL_toptarget = NEWSV(0,0);
3462 sv_upgrade(PL_toptarget, SVt_PVFM);
3463 sv_setpvn(PL_toptarget, "", 0);
3464 PL_bodytarget = NEWSV(0,0);
3465 sv_upgrade(PL_bodytarget, SVt_PVFM);
3466 sv_setpvn(PL_bodytarget, "", 0);
3467 PL_formtarget = PL_bodytarget;
3471 init_argv_symbols(argc,argv);
3473 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
3474 #ifdef MACOS_TRADITIONAL
3475 /* $0 is not majick on a Mac */
3476 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3478 sv_setpv(GvSV(tmpgv),PL_origfilename);
3479 magicname("0", "0", 1);
3482 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV))) {/* $^X */
3483 #ifdef HAS_PROCSELFEXE
3484 S_procself_val(aTHX_ GvSV(tmpgv), PL_origargv[0]);
3487 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
3489 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
3493 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
3495 GvMULTI_on(PL_envgv);
3496 hv = GvHVn(PL_envgv);
3497 hv_magic(hv, Nullgv, PERL_MAGIC_env);
3498 #ifdef USE_ENVIRON_ARRAY
3499 /* Note that if the supplied env parameter is actually a copy
3500 of the global environ then it may now point to free'd memory
3501 if the environment has been modified since. To avoid this
3502 problem we treat env==NULL as meaning 'use the default'
3507 environ[0] = Nullch;
3509 for (; *env; env++) {
3510 if (!(s = strchr(*env,'=')))
3517 sv = newSVpv(s+1, 0);
3518 (void)hv_store(hv, *env, s - *env, sv, 0);
3522 #endif /* USE_ENVIRON_ARRAY */
3525 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV))) {
3526 SvREADONLY_off(GvSV(tmpgv));
3527 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
3528 SvREADONLY_on(GvSV(tmpgv));
3533 S_init_perllib(pTHX)
3538 s = PerlEnv_getenv("PERL5LIB");
3540 incpush(s, TRUE, TRUE);
3542 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE);
3544 /* Treat PERL5?LIB as a possible search list logical name -- the
3545 * "natural" VMS idiom for a Unix path string. We allow each
3546 * element to be a set of |-separated directories for compatibility.
3550 if (my_trnlnm("PERL5LIB",buf,0))
3551 do { incpush(buf,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
3553 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE);
3557 /* Use the ~-expanded versions of APPLLIB (undocumented),
3558 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
3561 incpush(APPLLIB_EXP, TRUE, TRUE);
3565 incpush(ARCHLIB_EXP, FALSE, FALSE);
3567 #ifdef MACOS_TRADITIONAL
3569 struct stat tmpstatbuf;
3570 SV * privdir = NEWSV(55, 0);
3571 char * macperl = PerlEnv_getenv("MACPERL");
3576 Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl);
3577 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3578 incpush(SvPVX(privdir), TRUE, FALSE);
3579 Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl);
3580 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3581 incpush(SvPVX(privdir), TRUE, FALSE);
3583 SvREFCNT_dec(privdir);
3586 incpush(":", FALSE, FALSE);
3589 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
3592 incpush(PRIVLIB_EXP, TRUE, FALSE);
3594 incpush(PRIVLIB_EXP, FALSE, FALSE);
3598 /* sitearch is always relative to sitelib on Windows for
3599 * DLL-based path intuition to work correctly */
3600 # if !defined(WIN32)
3601 incpush(SITEARCH_EXP, FALSE, FALSE);
3607 incpush(SITELIB_EXP, TRUE, FALSE); /* this picks up sitearch as well */
3609 incpush(SITELIB_EXP, FALSE, FALSE);
3613 #ifdef SITELIB_STEM /* Search for version-specific dirs below here */
3614 incpush(SITELIB_STEM, FALSE, TRUE);
3617 #ifdef PERL_VENDORARCH_EXP
3618 /* vendorarch is always relative to vendorlib on Windows for
3619 * DLL-based path intuition to work correctly */
3620 # if !defined(WIN32)
3621 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE);
3625 #ifdef PERL_VENDORLIB_EXP
3627 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE); /* this picks up vendorarch as well */
3629 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE);
3633 #ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
3634 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE);
3637 #ifdef PERL_OTHERLIBDIRS
3638 incpush(PERL_OTHERLIBDIRS, TRUE, TRUE);
3642 incpush(".", FALSE, FALSE);
3643 #endif /* MACOS_TRADITIONAL */
3646 #if defined(DOSISH) || defined(EPOC)
3647 # define PERLLIB_SEP ';'
3650 # define PERLLIB_SEP '|'
3652 # if defined(MACOS_TRADITIONAL)
3653 # define PERLLIB_SEP ','
3655 # define PERLLIB_SEP ':'
3659 #ifndef PERLLIB_MANGLE
3660 # define PERLLIB_MANGLE(s,n) (s)
3664 S_incpush(pTHX_ char *p, int addsubdirs, int addoldvers)
3666 SV *subdir = Nullsv;
3671 if (addsubdirs || addoldvers) {
3672 subdir = sv_newmortal();
3675 /* Break at all separators */
3677 SV *libdir = NEWSV(55,0);
3680 /* skip any consecutive separators */
3681 while ( *p == PERLLIB_SEP ) {
3682 /* Uncomment the next line for PATH semantics */
3683 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
3687 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
3688 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
3693 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
3694 p = Nullch; /* break out */
3696 #ifdef MACOS_TRADITIONAL
3697 if (!strchr(SvPVX(libdir), ':'))
3698 sv_insert(libdir, 0, 0, ":", 1);
3699 if (SvPVX(libdir)[SvCUR(libdir)-1] != ':')
3700 sv_catpv(libdir, ":");
3704 * BEFORE pushing libdir onto @INC we may first push version- and
3705 * archname-specific sub-directories.
3707 if (addsubdirs || addoldvers) {
3708 #ifdef PERL_INC_VERSION_LIST
3709 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
3710 const char *incverlist[] = { PERL_INC_VERSION_LIST };
3711 const char **incver;
3713 struct stat tmpstatbuf;
3718 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
3720 while (unix[len-1] == '/') len--; /* Cosmetic */
3721 sv_usepvn(libdir,unix,len);
3724 PerlIO_printf(Perl_error_log,
3725 "Failed to unixify @INC element \"%s\"\n",
3729 #ifdef MACOS_TRADITIONAL
3730 #define PERL_AV_SUFFIX_FMT ""
3731 #define PERL_ARCH_FMT "%s:"
3732 #define PERL_ARCH_FMT_PATH PERL_FS_VER_FMT PERL_AV_SUFFIX_FMT
3734 #define PERL_AV_SUFFIX_FMT "/"
3735 #define PERL_ARCH_FMT "/%s"
3736 #define PERL_ARCH_FMT_PATH PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT
3738 /* .../version/archname if -d .../version/archname */
3739 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH PERL_ARCH_FMT,
3741 (int)PERL_REVISION, (int)PERL_VERSION,
3742 (int)PERL_SUBVERSION, ARCHNAME);
3743 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3744 S_ISDIR(tmpstatbuf.st_mode))
3745 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3747 /* .../version if -d .../version */
3748 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH, libdir,
3749 (int)PERL_REVISION, (int)PERL_VERSION,
3750 (int)PERL_SUBVERSION);
3751 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3752 S_ISDIR(tmpstatbuf.st_mode))
3753 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3755 /* .../archname if -d .../archname */
3756 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, ARCHNAME);
3757 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3758 S_ISDIR(tmpstatbuf.st_mode))
3759 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3762 #ifdef PERL_INC_VERSION_LIST
3764 for (incver = incverlist; *incver; incver++) {
3765 /* .../xxx if -d .../xxx */
3766 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, *incver);
3767 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3768 S_ISDIR(tmpstatbuf.st_mode))
3769 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3775 /* finally push this lib directory on the end of @INC */
3776 av_push(GvAVn(PL_incgv), libdir);
3780 #ifdef USE_5005THREADS
3781 STATIC struct perl_thread *
3782 S_init_main_thread(pTHX)
3784 #if !defined(PERL_IMPLICIT_CONTEXT)
3785 struct perl_thread *thr;
3789 Newz(53, thr, 1, struct perl_thread);
3790 PL_curcop = &PL_compiling;
3791 thr->interp = PERL_GET_INTERP;
3792 thr->cvcache = newHV();
3793 thr->threadsv = newAV();
3794 /* thr->threadsvp is set when find_threadsv is called */
3795 thr->specific = newAV();
3796 thr->flags = THRf_R_JOINABLE;
3797 MUTEX_INIT(&thr->mutex);
3798 /* Handcraft thrsv similarly to mess_sv */
3799 New(53, PL_thrsv, 1, SV);
3800 Newz(53, xpv, 1, XPV);
3801 SvFLAGS(PL_thrsv) = SVt_PV;
3802 SvANY(PL_thrsv) = (void*)xpv;
3803 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
3804 SvPVX(PL_thrsv) = (char*)thr;
3805 SvCUR_set(PL_thrsv, sizeof(thr));
3806 SvLEN_set(PL_thrsv, sizeof(thr));
3807 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
3808 thr->oursv = PL_thrsv;
3809 PL_chopset = " \n-";
3812 MUTEX_LOCK(&PL_threads_mutex);
3818 MUTEX_UNLOCK(&PL_threads_mutex);
3820 #ifdef HAVE_THREAD_INTERN
3821 Perl_init_thread_intern(thr);
3824 #ifdef SET_THREAD_SELF
3825 SET_THREAD_SELF(thr);
3827 thr->self = pthread_self();
3828 #endif /* SET_THREAD_SELF */
3832 * These must come after the thread self setting
3833 * because sv_setpvn does SvTAINT and the taint
3834 * fields thread selfness being set.
3836 PL_toptarget = NEWSV(0,0);
3837 sv_upgrade(PL_toptarget, SVt_PVFM);
3838 sv_setpvn(PL_toptarget, "", 0);
3839 PL_bodytarget = NEWSV(0,0);
3840 sv_upgrade(PL_bodytarget, SVt_PVFM);
3841 sv_setpvn(PL_bodytarget, "", 0);
3842 PL_formtarget = PL_bodytarget;
3843 thr->errsv = newSVpvn("", 0);
3844 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
3847 PL_peepp = MEMBER_TO_FPTR(Perl_peep);
3848 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3849 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3850 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3851 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3852 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
3854 PL_reginterp_cnt = 0;
3858 #endif /* USE_5005THREADS */
3861 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
3864 line_t oldline = CopLINE(PL_curcop);
3870 while (AvFILL(paramList) >= 0) {
3871 cv = (CV*)av_shift(paramList);
3872 if (PL_savebegin && (paramList == PL_beginav)) {
3873 /* save PL_beginav for compiler */
3874 if (! PL_beginav_save)
3875 PL_beginav_save = newAV();
3876 av_push(PL_beginav_save, (SV*)cv);
3880 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3881 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_list_body), cv);
3887 #ifndef PERL_FLEXIBLE_EXCEPTIONS
3891 (void)SvPV(atsv, len);
3894 PL_curcop = &PL_compiling;
3895 CopLINE_set(PL_curcop, oldline);
3896 if (paramList == PL_beginav)
3897 sv_catpv(atsv, "BEGIN failed--compilation aborted");
3899 Perl_sv_catpvf(aTHX_ atsv,
3900 "%s failed--call queue aborted",
3901 paramList == PL_checkav ? "CHECK"
3902 : paramList == PL_initav ? "INIT"
3904 while (PL_scopestack_ix > oldscope)
3907 Perl_croak(aTHX_ "%s", SvPVx(atsv, n_a));
3914 /* my_exit() was called */
3915 while (PL_scopestack_ix > oldscope)
3918 PL_curstash = PL_defstash;
3919 PL_curcop = &PL_compiling;
3920 CopLINE_set(PL_curcop, oldline);
3922 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
3923 if (paramList == PL_beginav)
3924 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
3926 Perl_croak(aTHX_ "%s failed--call queue aborted",
3927 paramList == PL_checkav ? "CHECK"
3928 : paramList == PL_initav ? "INIT"
3935 PL_curcop = &PL_compiling;
3936 CopLINE_set(PL_curcop, oldline);
3939 PerlIO_printf(Perl_error_log, "panic: restartop\n");
3947 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3949 S_vcall_list_body(pTHX_ va_list args)
3951 CV *cv = va_arg(args, CV*);
3952 return call_list_body(cv);
3957 S_call_list_body(pTHX_ CV *cv)
3959 PUSHMARK(PL_stack_sp);
3960 call_sv((SV*)cv, G_EVAL|G_DISCARD);
3965 Perl_my_exit(pTHX_ U32 status)
3967 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
3968 thr, (unsigned long) status));
3977 STATUS_NATIVE_SET(status);
3984 Perl_my_failure_exit(pTHX)
3987 if (vaxc$errno & 1) {
3988 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
3989 STATUS_NATIVE_SET(44);
3992 if (!vaxc$errno && errno) /* unlikely */
3993 STATUS_NATIVE_SET(44);
3995 STATUS_NATIVE_SET(vaxc$errno);
4000 STATUS_POSIX_SET(errno);
4002 exitstatus = STATUS_POSIX >> 8;
4003 if (exitstatus & 255)
4004 STATUS_POSIX_SET(exitstatus);
4006 STATUS_POSIX_SET(255);
4013 S_my_exit_jump(pTHX)
4015 register PERL_CONTEXT *cx;
4020 SvREFCNT_dec(PL_e_script);
4021 PL_e_script = Nullsv;
4024 POPSTACK_TO(PL_mainstack);
4025 if (cxstack_ix >= 0) {
4028 POPBLOCK(cx,PL_curpm);
4036 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen)
4039 p = SvPVX(PL_e_script);
4040 nl = strchr(p, '\n');
4041 nl = (nl) ? nl+1 : SvEND(PL_e_script);
4043 filter_del(read_e_script);
4046 sv_catpvn(buf_sv, p, nl-p);
4047 sv_chop(PL_e_script, nl);