3 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999,
4 * 2000, 2001, 2002, 2003, by Larry Wall and others
6 * You may distribute under the terms of either the GNU General Public
7 * License or the Artistic License, as specified in the README file.
12 * "A ship then new they built for him/of mithril and of elven glass" --Bilbo
16 #define PERL_IN_PERL_C
18 #include "patchlevel.h" /* for local_patches */
22 char *nw_get_sitelib(const char *pl);
25 /* XXX If this causes problems, set i_unistd=undef in the hint file. */
42 #if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
43 char *getenv (char *); /* Usually in <stdlib.h> */
46 static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
54 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
60 #if defined(USE_ITHREADS)
61 # define INIT_TLS_AND_INTERP \
63 if (!PL_curinterp) { \
64 PERL_SET_INTERP(my_perl); \
67 PERL_SET_THX(my_perl); \
69 MUTEX_INIT(&PL_dollarzero_mutex); \
72 PERL_SET_THX(my_perl); \
76 # define INIT_TLS_AND_INTERP \
78 if (!PL_curinterp) { \
79 PERL_SET_INTERP(my_perl); \
81 PERL_SET_THX(my_perl); \
85 #ifdef PERL_IMPLICIT_SYS
87 perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
88 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
89 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
90 struct IPerlDir* ipD, struct IPerlSock* ipS,
91 struct IPerlProc* ipP)
93 PerlInterpreter *my_perl;
94 /* New() needs interpreter, so call malloc() instead */
95 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
97 Zero(my_perl, 1, PerlInterpreter);
113 =head1 Embedding Functions
115 =for apidoc perl_alloc
117 Allocates a new Perl interpreter. See L<perlembed>.
125 PerlInterpreter *my_perl;
126 #ifdef USE_5005THREADS
130 /* New() needs interpreter, so call malloc() instead */
131 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
134 Zero(my_perl, 1, PerlInterpreter);
137 #endif /* PERL_IMPLICIT_SYS */
140 =for apidoc perl_construct
142 Initializes a new Perl interpreter. See L<perlembed>.
148 perl_construct(pTHXx)
152 PL_perl_destruct_level = 1;
154 if (PL_perl_destruct_level > 0)
157 /* Init the real globals (and main thread)? */
159 #ifdef PERL_FLEXIBLE_EXCEPTIONS
160 PL_protect = MEMBER_TO_FPTR(Perl_default_protect); /* for exceptions */
163 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
165 PL_linestr = NEWSV(65,79);
166 sv_upgrade(PL_linestr,SVt_PVIV);
168 if (!SvREADONLY(&PL_sv_undef)) {
169 /* set read-only and try to insure than we wont see REFCNT==0
172 SvREADONLY_on(&PL_sv_undef);
173 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
175 sv_setpv(&PL_sv_no,PL_No);
177 SvREADONLY_on(&PL_sv_no);
178 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
180 sv_setpv(&PL_sv_yes,PL_Yes);
182 SvREADONLY_on(&PL_sv_yes);
183 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
186 PL_sighandlerp = Perl_sighandler;
187 PL_pidstatus = newHV();
190 PL_rs = newSVpvn("\n", 1);
195 PL_lex_state = LEX_NOTPARSING;
201 SET_NUMERIC_STANDARD();
205 PL_patchlevel = NEWSV(0,4);
206 (void)SvUPGRADE(PL_patchlevel, SVt_PVNV);
207 if (PERL_REVISION > 127 || PERL_VERSION > 127 || PERL_SUBVERSION > 127)
208 SvGROW(PL_patchlevel, UTF8_MAXLEN*3+1);
209 s = (U8*)SvPVX(PL_patchlevel);
210 /* Build version strings using "native" characters */
211 s = uvchr_to_utf8(s, (UV)PERL_REVISION);
212 s = uvchr_to_utf8(s, (UV)PERL_VERSION);
213 s = uvchr_to_utf8(s, (UV)PERL_SUBVERSION);
215 SvCUR_set(PL_patchlevel, s - (U8*)SvPVX(PL_patchlevel));
216 SvPOK_on(PL_patchlevel);
217 SvNVX(PL_patchlevel) = (NV)PERL_REVISION +
218 ((NV)PERL_VERSION / (NV)1000) +
219 ((NV)PERL_SUBVERSION / (NV)1000000);
220 SvNOK_on(PL_patchlevel); /* dual valued */
221 SvUTF8_on(PL_patchlevel);
222 SvREADONLY_on(PL_patchlevel);
225 #if defined(LOCAL_PATCH_COUNT)
226 PL_localpatches = local_patches; /* For possible -v */
229 #ifdef HAVE_INTERP_INTERN
233 PerlIO_init(aTHX); /* Hook to IO system */
235 PL_fdpid = newAV(); /* for remembering popen pids by fd */
236 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
237 PL_errors = newSVpvn("",0);
238 sv_setpvn(PERL_DEBUG_PAD(0), "", 0); /* For regex debugging. */
239 sv_setpvn(PERL_DEBUG_PAD(1), "", 0); /* ext/re needs these */
240 sv_setpvn(PERL_DEBUG_PAD(2), "", 0); /* even without DEBUGGING. */
242 PL_regex_padav = newAV();
243 av_push(PL_regex_padav,(SV*)newAV()); /* First entry is an array of empty elements */
244 PL_regex_pad = AvARRAY(PL_regex_padav);
246 #ifdef USE_REENTRANT_API
247 Perl_reentrant_init(aTHX);
250 /* Note that strtab is a rather special HV. Assumptions are made
251 about not iterating on it, and not adding tie magic to it.
252 It is properly deallocated in perl_destruct() */
255 HvSHAREKEYS_off(PL_strtab); /* mandatory */
256 hv_ksplit(PL_strtab, 512);
258 #if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
259 _dyld_lookup_and_bind
260 ("__environ", (unsigned long *) &environ_pointer, NULL);
263 #ifdef USE_ENVIRON_ARRAY
264 PL_origenviron = environ;
267 /* Use sysconf(_SC_CLK_TCK) if available, if not
268 * available or if the sysconf() fails, use the HZ. */
269 #if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK)
270 PL_clocktick = sysconf(_SC_CLK_TCK);
271 if (PL_clocktick <= 0)
275 PL_stashcache = newHV();
277 #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
278 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0 */
283 s = PerlEnv_getenv("PERL_HASH_SEED");
285 while (isSPACE(*s)) s++;
286 if (s && isDIGIT(*s))
287 PL_hash_seed = (UV)Atoul(s);
288 #ifndef USE_HASH_SEED_EXPLICIT
290 /* Compute a random seed */
291 (void)seedDrand01((Rand_seed_t)seed());
292 PL_srand_called = TRUE;
293 PL_hash_seed = (UV)(Drand01() * (NV)UV_MAX);
294 #if RANDBITS < (UVSIZE * 8)
296 int skip = (UVSIZE * 8) - RANDBITS;
297 PL_hash_seed >>= skip;
298 /* The low bits might need extra help. */
299 PL_hash_seed += (UV)(Drand01() * ((1 << skip) - 1));
301 #endif /* RANDBITS < (UVSIZE * 8) */
303 #endif /* USE_HASH_SEED_EXPLICIT */
304 if (!PL_earlytaint && (s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG")))
305 PerlIO_printf(Perl_debug_log, "HASH_SEED = %"UVuf"\n",
308 #endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
314 =for apidoc nothreadhook
316 Stub that provides thread hook for perl_destruct when there are
323 Perl_nothreadhook(pTHX)
329 =for apidoc perl_destruct
331 Shuts down a Perl interpreter. See L<perlembed>.
339 volatile int destruct_level; /* 0=none, 1=full, 2=full with checks */
341 #ifdef USE_5005THREADS
343 #endif /* USE_5005THREADS */
345 /* wait for all pseudo-forked children to finish */
346 PERL_WAIT_FOR_CHILDREN;
348 destruct_level = PL_perl_destruct_level;
352 if ((s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL"))) {
354 if (destruct_level < i)
361 if(PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
366 if (PL_endav && !PL_minus_c)
367 call_list(PL_scopestack_ix, PL_endav);
373 /* Need to flush since END blocks can produce output */
376 if (CALL_FPTR(PL_threadhook)(aTHX)) {
377 /* Threads hook has vetoed further cleanup */
378 return STATUS_NATIVE_EXPORT;
381 /* We must account for everything. */
383 /* Destroy the main CV and syntax tree */
385 op_free(PL_main_root);
386 PL_main_root = Nullop;
388 PL_curcop = &PL_compiling;
389 PL_main_start = Nullop;
390 SvREFCNT_dec(PL_main_cv);
394 /* Tell PerlIO we are about to tear things apart in case
395 we have layers which are using resources that should
399 PerlIO_destruct(aTHX);
401 if (PL_sv_objcount) {
403 * Try to destruct global references. We do this first so that the
404 * destructors and destructees still exist. Some sv's might remain.
405 * Non-referenced objects are on their own.
410 /* unhook hooks which will soon be, or use, destroyed data */
411 SvREFCNT_dec(PL_warnhook);
412 PL_warnhook = Nullsv;
413 SvREFCNT_dec(PL_diehook);
416 /* call exit list functions */
417 while (PL_exitlistlen-- > 0)
418 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
420 Safefree(PL_exitlist);
425 if (destruct_level == 0){
427 DEBUG_P(debprofdump());
429 #if defined(PERLIO_LAYERS)
430 /* No more IO - including error messages ! */
431 PerlIO_cleanup(aTHX);
434 /* The exit() function will do everything that needs doing. */
435 return STATUS_NATIVE_EXPORT;
438 /* jettison our possibly duplicated environment */
439 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
440 * so we certainly shouldn't free it here
442 #if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
443 if (environ != PL_origenviron
445 /* only main thread can free environ[0] contents */
446 && PL_curinterp == aTHX
452 for (i = 0; environ[i]; i++)
453 safesysfree(environ[i]);
455 /* Must use safesysfree() when working with environ. */
456 safesysfree(environ);
458 environ = PL_origenviron;
463 /* the syntax tree is shared between clones
464 * so op_free(PL_main_root) only ReREFCNT_dec's
465 * REGEXPs in the parent interpreter
466 * we need to manually ReREFCNT_dec for the clones
469 I32 i = AvFILLp(PL_regex_padav) + 1;
470 SV **ary = AvARRAY(PL_regex_padav);
474 REGEXP *re = INT2PTR(REGEXP *,SvIVX(resv));
476 if (SvFLAGS(resv) & SVf_BREAK) {
477 /* this is PL_reg_curpm, already freed
478 * flag is set in regexec.c:S_regtry
480 SvFLAGS(resv) &= ~SVf_BREAK;
482 else if(SvREPADTMP(resv)) {
483 SvREPADTMP_off(resv);
490 SvREFCNT_dec(PL_regex_padav);
491 PL_regex_padav = Nullav;
495 SvREFCNT_dec((SV*) PL_stashcache);
496 PL_stashcache = NULL;
498 /* loosen bonds of global variables */
501 (void)PerlIO_close(PL_rsfp);
505 /* Filters for program text */
506 SvREFCNT_dec(PL_rsfp_filters);
507 PL_rsfp_filters = Nullav;
510 PL_preprocess = FALSE;
516 PL_doswitches = FALSE;
517 PL_dowarn = G_WARN_OFF;
518 PL_doextract = FALSE;
519 PL_sawampersand = FALSE; /* must save all match strings */
522 Safefree(PL_inplace);
524 SvREFCNT_dec(PL_patchlevel);
527 SvREFCNT_dec(PL_e_script);
528 PL_e_script = Nullsv;
531 /* magical thingies */
533 SvREFCNT_dec(PL_ofs_sv); /* $, */
536 SvREFCNT_dec(PL_ors_sv); /* $\ */
539 SvREFCNT_dec(PL_rs); /* $/ */
542 PL_multiline = 0; /* $* */
543 Safefree(PL_osname); /* $^O */
546 SvREFCNT_dec(PL_statname);
547 PL_statname = Nullsv;
550 /* defgv, aka *_ should be taken care of elsewhere */
552 /* clean up after study() */
553 SvREFCNT_dec(PL_lastscream);
554 PL_lastscream = Nullsv;
555 Safefree(PL_screamfirst);
557 Safefree(PL_screamnext);
561 Safefree(PL_efloatbuf);
562 PL_efloatbuf = Nullch;
565 /* startup and shutdown function lists */
566 SvREFCNT_dec(PL_beginav);
567 SvREFCNT_dec(PL_beginav_save);
568 SvREFCNT_dec(PL_endav);
569 SvREFCNT_dec(PL_checkav);
570 SvREFCNT_dec(PL_checkav_save);
571 SvREFCNT_dec(PL_initav);
573 PL_beginav_save = Nullav;
576 PL_checkav_save = Nullav;
579 /* shortcuts just get cleared */
585 PL_argvoutgv = Nullgv;
587 PL_stderrgv = Nullgv;
588 PL_last_in_gv = Nullgv;
590 PL_debstash = Nullhv;
592 /* reset so print() ends up where we expect */
595 SvREFCNT_dec(PL_argvout_stack);
596 PL_argvout_stack = Nullav;
598 SvREFCNT_dec(PL_modglobal);
599 PL_modglobal = Nullhv;
600 SvREFCNT_dec(PL_preambleav);
601 PL_preambleav = Nullav;
602 SvREFCNT_dec(PL_subname);
604 SvREFCNT_dec(PL_linestr);
606 SvREFCNT_dec(PL_pidstatus);
607 PL_pidstatus = Nullhv;
608 SvREFCNT_dec(PL_toptarget);
609 PL_toptarget = Nullsv;
610 SvREFCNT_dec(PL_bodytarget);
611 PL_bodytarget = Nullsv;
612 PL_formtarget = Nullsv;
614 /* free locale stuff */
615 #ifdef USE_LOCALE_COLLATE
616 Safefree(PL_collation_name);
617 PL_collation_name = Nullch;
620 #ifdef USE_LOCALE_NUMERIC
621 Safefree(PL_numeric_name);
622 PL_numeric_name = Nullch;
623 SvREFCNT_dec(PL_numeric_radix_sv);
626 /* clear utf8 character classes */
627 SvREFCNT_dec(PL_utf8_alnum);
628 SvREFCNT_dec(PL_utf8_alnumc);
629 SvREFCNT_dec(PL_utf8_ascii);
630 SvREFCNT_dec(PL_utf8_alpha);
631 SvREFCNT_dec(PL_utf8_space);
632 SvREFCNT_dec(PL_utf8_cntrl);
633 SvREFCNT_dec(PL_utf8_graph);
634 SvREFCNT_dec(PL_utf8_digit);
635 SvREFCNT_dec(PL_utf8_upper);
636 SvREFCNT_dec(PL_utf8_lower);
637 SvREFCNT_dec(PL_utf8_print);
638 SvREFCNT_dec(PL_utf8_punct);
639 SvREFCNT_dec(PL_utf8_xdigit);
640 SvREFCNT_dec(PL_utf8_mark);
641 SvREFCNT_dec(PL_utf8_toupper);
642 SvREFCNT_dec(PL_utf8_totitle);
643 SvREFCNT_dec(PL_utf8_tolower);
644 SvREFCNT_dec(PL_utf8_tofold);
645 SvREFCNT_dec(PL_utf8_idstart);
646 SvREFCNT_dec(PL_utf8_idcont);
647 PL_utf8_alnum = Nullsv;
648 PL_utf8_alnumc = Nullsv;
649 PL_utf8_ascii = Nullsv;
650 PL_utf8_alpha = Nullsv;
651 PL_utf8_space = Nullsv;
652 PL_utf8_cntrl = Nullsv;
653 PL_utf8_graph = Nullsv;
654 PL_utf8_digit = Nullsv;
655 PL_utf8_upper = Nullsv;
656 PL_utf8_lower = Nullsv;
657 PL_utf8_print = Nullsv;
658 PL_utf8_punct = Nullsv;
659 PL_utf8_xdigit = Nullsv;
660 PL_utf8_mark = Nullsv;
661 PL_utf8_toupper = Nullsv;
662 PL_utf8_totitle = Nullsv;
663 PL_utf8_tolower = Nullsv;
664 PL_utf8_tofold = Nullsv;
665 PL_utf8_idstart = Nullsv;
666 PL_utf8_idcont = Nullsv;
668 if (!specialWARN(PL_compiling.cop_warnings))
669 SvREFCNT_dec(PL_compiling.cop_warnings);
670 PL_compiling.cop_warnings = Nullsv;
671 if (!specialCopIO(PL_compiling.cop_io))
672 SvREFCNT_dec(PL_compiling.cop_io);
673 PL_compiling.cop_io = Nullsv;
674 CopFILE_free(&PL_compiling);
675 CopSTASH_free(&PL_compiling);
677 /* Prepare to destruct main symbol table. */
682 SvREFCNT_dec(PL_curstname);
683 PL_curstname = Nullsv;
685 /* clear queued errors */
686 SvREFCNT_dec(PL_errors);
690 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
691 if (PL_scopestack_ix != 0)
692 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
693 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
694 (long)PL_scopestack_ix);
695 if (PL_savestack_ix != 0)
696 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
697 "Unbalanced saves: %ld more saves than restores\n",
698 (long)PL_savestack_ix);
699 if (PL_tmps_floor != -1)
700 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
701 (long)PL_tmps_floor + 1);
702 if (cxstack_ix != -1)
703 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
704 (long)cxstack_ix + 1);
707 /* Now absolutely destruct everything, somehow or other, loops or no. */
708 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
709 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
711 /* the 2 is for PL_fdpid and PL_strtab */
712 while (PL_sv_count > 2 && sv_clean_all())
715 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
716 SvFLAGS(PL_fdpid) |= SVt_PVAV;
717 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
718 SvFLAGS(PL_strtab) |= SVt_PVHV;
720 AvREAL_off(PL_fdpid); /* no surviving entries */
721 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
724 #ifdef HAVE_INTERP_INTERN
728 /* Destruct the global string table. */
730 /* Yell and reset the HeVAL() slots that are still holding refcounts,
731 * so that sv_free() won't fail on them.
739 max = HvMAX(PL_strtab);
740 array = HvARRAY(PL_strtab);
743 if (hent && ckWARN_d(WARN_INTERNAL)) {
744 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
745 "Unbalanced string table refcount: (%d) for \"%s\"",
746 HeVAL(hent) - Nullsv, HeKEY(hent));
747 HeVAL(hent) = Nullsv;
757 SvREFCNT_dec(PL_strtab);
760 /* free the pointer table used for cloning */
761 ptr_table_free(PL_ptr_table);
764 /* free special SVs */
766 SvREFCNT(&PL_sv_yes) = 0;
767 sv_clear(&PL_sv_yes);
768 SvANY(&PL_sv_yes) = NULL;
769 SvFLAGS(&PL_sv_yes) = 0;
771 SvREFCNT(&PL_sv_no) = 0;
773 SvANY(&PL_sv_no) = NULL;
774 SvFLAGS(&PL_sv_no) = 0;
778 for (i=0; i<=2; i++) {
779 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
780 sv_clear(PERL_DEBUG_PAD(i));
781 SvANY(PERL_DEBUG_PAD(i)) = NULL;
782 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
786 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
787 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
789 #ifdef DEBUG_LEAKING_SCALARS
790 if (PL_sv_count != 0) {
795 for (sva = PL_sv_arenaroot; sva; sva = (SV*)SvANY(sva)) {
796 svend = &sva[SvREFCNT(sva)];
797 for (sv = sva + 1; sv < svend; ++sv) {
798 if (SvTYPE(sv) != SVTYPEMASK) {
799 PerlIO_printf(Perl_debug_log, "leaked: 0x%p\n", sv);
807 #if defined(PERLIO_LAYERS)
808 /* No more IO - including error messages ! */
809 PerlIO_cleanup(aTHX);
812 /* sv_undef needs to stay immortal until after PerlIO_cleanup
813 as currently layers use it rather than Nullsv as a marker
814 for no arg - and will try and SvREFCNT_dec it.
816 SvREFCNT(&PL_sv_undef) = 0;
817 SvREADONLY_off(&PL_sv_undef);
819 Safefree(PL_origfilename);
820 Safefree(PL_reg_start_tmp);
822 Safefree(PL_reg_curpm);
823 Safefree(PL_reg_poscache);
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());
835 #ifdef USE_REENTRANT_API
836 Perl_reentrant_free(aTHX);
841 /* As the absolutely last thing, free the non-arena SV for mess() */
844 /* it could have accumulated taint magic */
845 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
848 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
849 moremagic = mg->mg_moremagic;
850 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
852 Safefree(mg->mg_ptr);
856 /* we know that type >= SVt_PV */
857 (void)SvOOK_off(PL_mess_sv);
858 Safefree(SvPVX(PL_mess_sv));
859 Safefree(SvANY(PL_mess_sv));
860 Safefree(PL_mess_sv);
863 return STATUS_NATIVE_EXPORT;
867 =for apidoc perl_free
869 Releases a Perl interpreter. See L<perlembed>.
877 #if defined(WIN32) || defined(NETWARE)
878 # if defined(PERL_IMPLICIT_SYS)
880 void *host = nw_internal_host;
882 void *host = w32_internal_host;
886 nw_delete_internal_host(host);
888 win32_delete_internal_host(host);
899 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
901 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
902 PL_exitlist[PL_exitlistlen].fn = fn;
903 PL_exitlist[PL_exitlistlen].ptr = ptr;
908 =for apidoc perl_parse
910 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
916 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
921 #ifdef USE_5005THREADS
925 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
928 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
929 setuid perl scripts securely.\n");
937 /* Set PL_origalen be the sum of the contiguous argv[]
938 * elements plus the size of the env in case that it is
939 * contiguous with the argv[]. This is used in mg.c:mg_set()
940 * as the maximum modifiable length of $0. In the worst case
941 * the area we are able to modify is limited to the size of
942 * the original argv[0].
947 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
949 /* See if all the arguments are contiguous in memory.
950 * Note that 'contiguous' is a loose term because some
951 * platforms align the argv[] and the envp[]. We just check
952 * that they are within aligned PTRSIZE bytes. As long as no
953 * system has something bizarre like the argv[] interleaved
954 * with some other data, we are fine. (Did I just evoke
955 * Murphy's Law?) --jhi */
958 for (i = 1; i < PL_origargc; i++) {
959 if (PL_origargv[i] > s &&
961 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)) {
968 /* Can we grab env area too to be used as the area for $0? */
969 if (PL_origenviron &&
970 PL_origenviron[0] > s &&
972 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)) {
973 s = PL_origenviron[0];
975 my_setenv("NoNe SuCh", Nullch);
976 /* Force copy of environment. */
977 for (i = 1; PL_origenviron[i]; i++)
978 if (PL_origenviron[i] > s &&
980 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)) {
981 s = PL_origenviron[i];
987 PL_origalen = s - PL_origargv[0];
992 /* Come here if running an undumped a.out. */
994 PL_origfilename = savepv(argv[0]);
995 PL_do_undump = FALSE;
996 cxstack_ix = -1; /* start label stack again */
998 init_postdump_symbols(argc,argv,env);
1003 op_free(PL_main_root);
1004 PL_main_root = Nullop;
1006 PL_main_start = Nullop;
1007 SvREFCNT_dec(PL_main_cv);
1008 PL_main_cv = Nullcv;
1011 oldscope = PL_scopestack_ix;
1012 PL_dowarn = G_WARN_OFF;
1014 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1015 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
1021 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1022 parse_body(env,xsinit);
1025 call_list(oldscope, PL_checkav);
1032 /* my_exit() was called */
1033 while (PL_scopestack_ix > oldscope)
1036 PL_curstash = PL_defstash;
1038 call_list(oldscope, PL_checkav);
1039 ret = STATUS_NATIVE_EXPORT;
1042 PerlIO_printf(Perl_error_log, "panic: top_env\n");
1050 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1052 S_vparse_body(pTHX_ va_list args)
1054 char **env = va_arg(args, char**);
1055 XSINIT_t xsinit = va_arg(args, XSINIT_t);
1057 return parse_body(env, xsinit);
1062 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
1064 int argc = PL_origargc;
1065 char **argv = PL_origargv;
1066 char *scriptname = NULL;
1068 VOL bool dosearch = FALSE;
1069 char *validarg = "";
1072 char *cddir = Nullch;
1074 sv_setpvn(PL_linestr,"",0);
1075 sv = newSVpvn("",0); /* first used for -I flags */
1079 for (argc--,argv++; argc > 0; argc--,argv++) {
1080 if (argv[0][0] != '-' || !argv[0][1])
1084 validarg = " PHOOEY ";
1092 #ifndef PERL_STRICT_CR
1117 if ((s = moreswitches(s)))
1122 CHECK_MALLOC_TOO_LATE_FOR('t');
1123 if( !PL_tainting ) {
1124 PL_taint_warn = TRUE;
1130 CHECK_MALLOC_TOO_LATE_FOR('T');
1132 PL_taint_warn = FALSE;
1137 #ifdef MACOS_TRADITIONAL
1138 /* ignore -e for Dev:Pseudo argument */
1139 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
1142 if (PL_euid != PL_uid || PL_egid != PL_gid)
1143 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
1145 PL_e_script = newSVpvn("",0);
1146 filter_add(read_e_script, NULL);
1149 sv_catpv(PL_e_script, s);
1151 sv_catpv(PL_e_script, argv[1]);
1155 Perl_croak(aTHX_ "No code specified for -e");
1156 sv_catpv(PL_e_script, "\n");
1159 case 'I': /* -I handled both here and in moreswitches() */
1161 if (!*++s && (s=argv[1]) != Nullch) {
1166 STRLEN len = strlen(s);
1167 p = savepvn(s, len);
1168 incpush(p, TRUE, TRUE, FALSE);
1169 sv_catpvn(sv, "-I", 2);
1170 sv_catpvn(sv, p, len);
1171 sv_catpvn(sv, " ", 1);
1175 Perl_croak(aTHX_ "No directory specified for -I");
1179 PL_preprocess = TRUE;
1189 PL_preambleav = newAV();
1190 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
1192 PL_Sv = newSVpv("print myconfig();",0);
1194 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
1196 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
1198 sv_catpv(PL_Sv,"\" Compile-time options:");
1200 sv_catpv(PL_Sv," DEBUGGING");
1202 # ifdef MULTIPLICITY
1203 sv_catpv(PL_Sv," MULTIPLICITY");
1205 # ifdef USE_5005THREADS
1206 sv_catpv(PL_Sv," USE_5005THREADS");
1208 # ifdef USE_ITHREADS
1209 sv_catpv(PL_Sv," USE_ITHREADS");
1211 # ifdef USE_64_BIT_INT
1212 sv_catpv(PL_Sv," USE_64_BIT_INT");
1214 # ifdef USE_64_BIT_ALL
1215 sv_catpv(PL_Sv," USE_64_BIT_ALL");
1217 # ifdef USE_LONG_DOUBLE
1218 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1220 # ifdef USE_LARGE_FILES
1221 sv_catpv(PL_Sv," USE_LARGE_FILES");
1224 sv_catpv(PL_Sv," USE_SOCKS");
1226 # ifdef PERL_IMPLICIT_CONTEXT
1227 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1229 # ifdef PERL_IMPLICIT_SYS
1230 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1232 sv_catpv(PL_Sv,"\\n\",");
1234 #if defined(LOCAL_PATCH_COUNT)
1235 if (LOCAL_PATCH_COUNT > 0) {
1237 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
1238 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1239 if (PL_localpatches[i])
1240 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
1244 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
1247 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
1249 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
1252 sv_catpv(PL_Sv, "; \
1254 @env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; ");
1257 push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
1260 print \" \\%ENV:\\n @env\\n\" if @env; \
1261 print \" \\@INC:\\n @INC\\n\";");
1264 PL_Sv = newSVpv("config_vars(qw(",0);
1265 sv_catpv(PL_Sv, ++s);
1266 sv_catpv(PL_Sv, "))");
1269 av_push(PL_preambleav, PL_Sv);
1270 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1273 PL_doextract = TRUE;
1281 if (!*++s || isSPACE(*s)) {
1285 /* catch use of gnu style long options */
1286 if (strEQ(s, "version")) {
1290 if (strEQ(s, "help")) {
1297 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1301 sv_setsv(get_sv("/", TRUE), PL_rs);
1304 #ifndef SECURE_INTERNAL_GETENV
1307 (s = PerlEnv_getenv("PERL5OPT")))
1312 if (*s == '-' && *(s+1) == 'T') {
1313 CHECK_MALLOC_TOO_LATE_FOR('T');
1315 PL_taint_warn = FALSE;
1318 char *popt_copy = Nullch;
1331 if (!strchr("DIMUdmtwA", *s))
1332 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
1336 popt_copy = SvPVX(sv_2mortal(newSVpv(popt,0)));
1337 s = popt_copy + (s - popt);
1338 d = popt_copy + (d - popt);
1345 if( !PL_tainting ) {
1346 PL_taint_warn = TRUE;
1356 if (PL_taint_warn && PL_dowarn != G_WARN_ALL_OFF) {
1357 PL_compiling.cop_warnings = newSVpvn(WARN_TAINTstring, WARNsize);
1361 scriptname = argv[0];
1364 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1366 else if (scriptname == Nullch) {
1368 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1376 open_script(scriptname,dosearch,sv,&fdscript);
1378 validate_suid(validarg, scriptname,fdscript);
1381 #if defined(SIGCHLD) || defined(SIGCLD)
1384 # define SIGCHLD SIGCLD
1386 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1387 if (sigstate == SIG_IGN) {
1388 if (ckWARN(WARN_SIGNAL))
1389 Perl_warner(aTHX_ packWARN(WARN_SIGNAL),
1390 "Can't ignore signal CHLD, forcing to default");
1391 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1397 #ifdef MACOS_TRADITIONAL
1398 if (PL_doextract || gMacPerl_AlwaysExtract) {
1403 if (cddir && PerlDir_chdir(cddir) < 0)
1404 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1408 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1409 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1410 CvUNIQUE_on(PL_compcv);
1412 CvPADLIST(PL_compcv) = pad_new(0);
1413 #ifdef USE_5005THREADS
1414 CvOWNER(PL_compcv) = 0;
1415 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1416 MUTEX_INIT(CvMUTEXP(PL_compcv));
1417 #endif /* USE_5005THREADS */
1420 boot_core_UNIVERSAL();
1422 boot_core_xsutils();
1426 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
1428 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
1434 # ifdef HAS_SOCKS5_INIT
1435 socks5_init(argv[0]);
1441 init_predump_symbols();
1442 /* init_postdump_symbols not currently designed to be called */
1443 /* more than once (ENV isn't cleared first, for example) */
1444 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
1446 init_postdump_symbols(argc,argv,env);
1448 /* PL_unicode is turned on by -C or by $ENV{PERL_UNICODE}.
1449 * PL_utf8locale is conditionally turned on by
1450 * locale.c:Perl_init_i18nl10n() if the environment
1451 * look like the user wants to use UTF-8. */
1453 /* Requires init_predump_symbols(). */
1454 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
1459 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
1460 * and the default open disciplines. */
1461 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
1462 PL_stdingv && (io = GvIO(PL_stdingv)) &&
1464 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
1465 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
1466 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
1468 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
1469 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
1470 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
1472 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
1473 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
1474 (sv = GvSV(gv_fetchpv("\017PEN", TRUE, SVt_PV)))) {
1475 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
1476 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
1479 sv_setpvn(sv, ":utf8\0:utf8", 11);
1481 sv_setpvn(sv, ":utf8\0", 6);
1484 sv_setpvn(sv, "\0:utf8", 6);
1490 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
1491 if (strEQ(s, "unsafe"))
1492 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
1493 else if (strEQ(s, "safe"))
1494 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
1496 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
1501 /* now parse the script */
1503 SETERRNO(0,SS_NORMAL);
1505 #ifdef MACOS_TRADITIONAL
1506 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1508 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1510 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1511 MacPerl_MPWFileName(PL_origfilename));
1515 if (yyparse() || PL_error_count) {
1517 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
1519 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1524 CopLINE_set(PL_curcop, 0);
1525 PL_curstash = PL_defstash;
1526 PL_preprocess = FALSE;
1528 SvREFCNT_dec(PL_e_script);
1529 PL_e_script = Nullsv;
1536 SAVECOPFILE(PL_curcop);
1537 SAVECOPLINE(PL_curcop);
1538 gv_check(PL_defstash);
1545 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1546 dump_mstats("after compilation:");
1555 =for apidoc perl_run
1557 Tells a Perl interpreter to run. See L<perlembed>.
1568 #ifdef USE_5005THREADS
1572 oldscope = PL_scopestack_ix;
1577 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1579 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1585 cxstack_ix = -1; /* start context stack again */
1587 case 0: /* normal completion */
1588 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1593 case 2: /* my_exit() */
1594 while (PL_scopestack_ix > oldscope)
1597 PL_curstash = PL_defstash;
1598 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
1599 PL_endav && !PL_minus_c)
1600 call_list(oldscope, PL_endav);
1602 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1603 dump_mstats("after execution: ");
1605 ret = STATUS_NATIVE_EXPORT;
1609 POPSTACK_TO(PL_mainstack);
1612 PerlIO_printf(Perl_error_log, "panic: restartop\n");
1622 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1624 S_vrun_body(pTHX_ va_list args)
1626 I32 oldscope = va_arg(args, I32);
1628 return run_body(oldscope);
1634 S_run_body(pTHX_ I32 oldscope)
1636 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
1637 PL_sawampersand ? "Enabling" : "Omitting"));
1639 if (!PL_restartop) {
1640 DEBUG_x(dump_all());
1641 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
1642 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1646 #ifdef MACOS_TRADITIONAL
1647 PerlIO_printf(Perl_error_log, "%s%s syntax OK\n",
1648 (gMacPerl_ErrorFormat ? "# " : ""),
1649 MacPerl_MPWFileName(PL_origfilename));
1651 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
1655 if (PERLDB_SINGLE && PL_DBsingle)
1656 sv_setiv(PL_DBsingle, 1);
1658 call_list(oldscope, PL_initav);
1664 PL_op = PL_restartop;
1668 else if (PL_main_start) {
1669 CvDEPTH(PL_main_cv) = 1;
1670 PL_op = PL_main_start;
1680 =head1 SV Manipulation Functions
1682 =for apidoc p||get_sv
1684 Returns the SV of the specified Perl scalar. If C<create> is set and the
1685 Perl variable does not exist then it will be created. If C<create> is not
1686 set and the variable does not exist then NULL is returned.
1692 Perl_get_sv(pTHX_ const char *name, I32 create)
1695 #ifdef USE_5005THREADS
1696 if (name[1] == '\0' && !isALPHA(name[0])) {
1697 PADOFFSET tmp = find_threadsv(name);
1698 if (tmp != NOT_IN_PAD)
1699 return THREADSV(tmp);
1701 #endif /* USE_5005THREADS */
1702 gv = gv_fetchpv(name, create, SVt_PV);
1709 =head1 Array Manipulation Functions
1711 =for apidoc p||get_av
1713 Returns the AV of the specified Perl array. If C<create> is set and the
1714 Perl variable does not exist then it will be created. If C<create> is not
1715 set and the variable does not exist then NULL is returned.
1721 Perl_get_av(pTHX_ const char *name, I32 create)
1723 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1732 =head1 Hash Manipulation Functions
1734 =for apidoc p||get_hv
1736 Returns the HV of the specified Perl hash. If C<create> is set and the
1737 Perl variable does not exist then it will be created. If C<create> is not
1738 set and the variable does not exist then NULL is returned.
1744 Perl_get_hv(pTHX_ const char *name, I32 create)
1746 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1755 =head1 CV Manipulation Functions
1757 =for apidoc p||get_cv
1759 Returns the CV of the specified Perl subroutine. If C<create> is set and
1760 the Perl subroutine does not exist then it will be declared (which has the
1761 same effect as saying C<sub name;>). If C<create> is not set and the
1762 subroutine does not exist then NULL is returned.
1768 Perl_get_cv(pTHX_ const char *name, I32 create)
1770 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
1771 /* XXX unsafe for threads if eval_owner isn't held */
1772 /* XXX this is probably not what they think they're getting.
1773 * It has the same effect as "sub name;", i.e. just a forward
1775 if (create && !GvCVu(gv))
1776 return newSUB(start_subparse(FALSE, 0),
1777 newSVOP(OP_CONST, 0, newSVpv(name,0)),
1785 /* Be sure to refetch the stack pointer after calling these routines. */
1789 =head1 Callback Functions
1791 =for apidoc p||call_argv
1793 Performs a callback to the specified Perl sub. See L<perlcall>.
1799 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
1801 /* See G_* flags in cop.h */
1802 /* null terminated arg list */
1809 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
1814 return call_pv(sub_name, flags);
1818 =for apidoc p||call_pv
1820 Performs a callback to the specified Perl sub. See L<perlcall>.
1826 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
1827 /* name of the subroutine */
1828 /* See G_* flags in cop.h */
1830 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
1834 =for apidoc p||call_method
1836 Performs a callback to the specified Perl method. The blessed object must
1837 be on the stack. See L<perlcall>.
1843 Perl_call_method(pTHX_ const char *methname, I32 flags)
1844 /* name of the subroutine */
1845 /* See G_* flags in cop.h */
1847 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
1850 /* May be called with any of a CV, a GV, or an SV containing the name. */
1852 =for apidoc p||call_sv
1854 Performs a callback to the Perl sub whose name is in the SV. See
1861 Perl_call_sv(pTHX_ SV *sv, I32 flags)
1862 /* See G_* flags in cop.h */
1865 LOGOP myop; /* fake syntax tree node */
1868 volatile I32 retval = 0;
1870 bool oldcatch = CATCH_GET;
1875 if (flags & G_DISCARD) {
1880 Zero(&myop, 1, LOGOP);
1881 myop.op_next = Nullop;
1882 if (!(flags & G_NOARGS))
1883 myop.op_flags |= OPf_STACKED;
1884 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1885 (flags & G_ARRAY) ? OPf_WANT_LIST :
1890 EXTEND(PL_stack_sp, 1);
1891 *++PL_stack_sp = sv;
1893 oldscope = PL_scopestack_ix;
1895 if (PERLDB_SUB && PL_curstash != PL_debstash
1896 /* Handle first BEGIN of -d. */
1897 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
1898 /* Try harder, since this may have been a sighandler, thus
1899 * curstash may be meaningless. */
1900 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
1901 && !(flags & G_NODEBUG))
1902 PL_op->op_private |= OPpENTERSUB_DB;
1904 if (flags & G_METHOD) {
1905 Zero(&method_op, 1, UNOP);
1906 method_op.op_next = PL_op;
1907 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1908 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
1909 PL_op = (OP*)&method_op;
1912 if (!(flags & G_EVAL)) {
1914 call_body((OP*)&myop, FALSE);
1915 retval = PL_stack_sp - (PL_stack_base + oldmark);
1916 CATCH_SET(oldcatch);
1919 myop.op_other = (OP*)&myop;
1921 /* we're trying to emulate pp_entertry() here */
1923 register PERL_CONTEXT *cx;
1924 I32 gimme = GIMME_V;
1929 push_return(Nullop);
1930 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
1932 PL_eval_root = PL_op; /* Only needed so that goto works right. */
1934 PL_in_eval = EVAL_INEVAL;
1935 if (flags & G_KEEPERR)
1936 PL_in_eval |= EVAL_KEEPERR;
1942 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1944 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1951 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1953 call_body((OP*)&myop, FALSE);
1955 retval = PL_stack_sp - (PL_stack_base + oldmark);
1956 if (!(flags & G_KEEPERR))
1963 /* my_exit() was called */
1964 PL_curstash = PL_defstash;
1967 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1968 Perl_croak(aTHX_ "Callback called exit");
1973 PL_op = PL_restartop;
1977 PL_stack_sp = PL_stack_base + oldmark;
1978 if (flags & G_ARRAY)
1982 *++PL_stack_sp = &PL_sv_undef;
1987 if (PL_scopestack_ix > oldscope) {
1991 register PERL_CONTEXT *cx;
2003 if (flags & G_DISCARD) {
2004 PL_stack_sp = PL_stack_base + oldmark;
2013 #ifdef PERL_FLEXIBLE_EXCEPTIONS
2015 S_vcall_body(pTHX_ va_list args)
2017 OP *myop = va_arg(args, OP*);
2018 int is_eval = va_arg(args, int);
2020 call_body(myop, is_eval);
2026 S_call_body(pTHX_ OP *myop, int is_eval)
2028 if (PL_op == myop) {
2030 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
2032 PL_op = Perl_pp_entersub(aTHX); /* this does */
2038 /* Eval a string. The G_EVAL flag is always assumed. */
2041 =for apidoc p||eval_sv
2043 Tells Perl to C<eval> the string in the SV.
2049 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
2051 /* See G_* flags in cop.h */
2054 UNOP myop; /* fake syntax tree node */
2055 volatile I32 oldmark = SP - PL_stack_base;
2056 volatile I32 retval = 0;
2062 if (flags & G_DISCARD) {
2069 Zero(PL_op, 1, UNOP);
2070 EXTEND(PL_stack_sp, 1);
2071 *++PL_stack_sp = sv;
2072 oldscope = PL_scopestack_ix;
2074 if (!(flags & G_NOARGS))
2075 myop.op_flags = OPf_STACKED;
2076 myop.op_next = Nullop;
2077 myop.op_type = OP_ENTEREVAL;
2078 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
2079 (flags & G_ARRAY) ? OPf_WANT_LIST :
2081 if (flags & G_KEEPERR)
2082 myop.op_flags |= OPf_SPECIAL;
2084 #ifdef PERL_FLEXIBLE_EXCEPTIONS
2086 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
2093 #ifndef PERL_FLEXIBLE_EXCEPTIONS
2095 call_body((OP*)&myop,TRUE);
2097 retval = PL_stack_sp - (PL_stack_base + oldmark);
2098 if (!(flags & G_KEEPERR))
2105 /* my_exit() was called */
2106 PL_curstash = PL_defstash;
2109 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
2110 Perl_croak(aTHX_ "Callback called exit");
2115 PL_op = PL_restartop;
2119 PL_stack_sp = PL_stack_base + oldmark;
2120 if (flags & G_ARRAY)
2124 *++PL_stack_sp = &PL_sv_undef;
2130 if (flags & G_DISCARD) {
2131 PL_stack_sp = PL_stack_base + oldmark;
2141 =for apidoc p||eval_pv
2143 Tells Perl to C<eval> the given string and return an SV* result.
2149 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
2152 SV* sv = newSVpv(p, 0);
2154 eval_sv(sv, G_SCALAR);
2161 if (croak_on_error && SvTRUE(ERRSV)) {
2163 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
2169 /* Require a module. */
2172 =head1 Embedding Functions
2174 =for apidoc p||require_pv
2176 Tells Perl to C<require> the file named by the string argument. It is
2177 analogous to the Perl code C<eval "require '$file'">. It's even
2178 implemented that way; consider using load_module instead.
2183 Perl_require_pv(pTHX_ const char *pv)
2187 PUSHSTACKi(PERLSI_REQUIRE);
2189 sv = sv_newmortal();
2190 sv_setpv(sv, "require '");
2193 eval_sv(sv, G_DISCARD);
2199 Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
2203 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
2204 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
2208 S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
2210 /* This message really ought to be max 23 lines.
2211 * Removed -h because the user already knows that option. Others? */
2213 static char *usage_msg[] = {
2214 "-0[octal] specify record separator (\\0, if no argument)",
2215 "-a autosplit mode with -n or -p (splits $_ into @F)",
2216 "-C enable native wide character system interfaces",
2217 "-c check syntax only (runs BEGIN and CHECK blocks)",
2218 "-d[:debugger] run program under debugger",
2219 "-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2220 "-e 'command' one line of program (several -e's allowed, omit programfile)",
2221 "-F/pattern/ split() pattern for -a switch (//'s are optional)",
2222 "-i[extension] edit <> files in place (makes backup if extension supplied)",
2223 "-Idirectory specify @INC/#include directory (several -I's allowed)",
2224 "-l[octal] enable line ending processing, specifies line terminator",
2225 "-[mM][-]module execute `use/no module...' before executing program",
2226 "-n assume 'while (<>) { ... }' loop around program",
2227 "-p assume loop like -n but print line also, like sed",
2228 "-P run program through C preprocessor before compilation",
2229 "-s enable rudimentary parsing for switches after programfile",
2230 "-S look for programfile using PATH environment variable",
2231 "-T enable tainting checks",
2232 "-t enable tainting warnings",
2233 "-u dump core after parsing program",
2234 "-U allow unsafe operations",
2235 "-v print version, subversion (includes VERY IMPORTANT perl info)",
2236 "-V[:variable] print configuration summary (or a single Config.pm variable)",
2237 "-w enable many useful warnings (RECOMMENDED)",
2238 "-W enable all warnings",
2239 "-X disable all warnings",
2240 "-x[directory] strip off text before #!perl line and perhaps cd to directory",
2244 char **p = usage_msg;
2246 PerlIO_printf(PerlIO_stdout(),
2247 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2250 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
2253 /* convert a string of -D options (or digits) into an int.
2254 * sets *s to point to the char after the options */
2258 Perl_get_debug_opts(pTHX_ char **s)
2262 /* if adding extra options, remember to update DEBUG_MASK */
2263 static char debopts[] = "psltocPmfrxu HXDSTRJvC";
2265 for (; isALNUM(**s); (*s)++) {
2266 char *d = strchr(debopts,**s);
2268 i |= 1 << (d - debopts);
2269 else if (ckWARN_d(WARN_DEBUGGING))
2270 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2271 "invalid option -D%c\n", **s);
2276 for (; isALNUM(**s); (*s)++) ;
2279 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
2280 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2281 "-Dp not implemented on this platform\n");
2287 /* This routine handles any switches that can be given during run */
2290 Perl_moreswitches(pTHX_ char *s)
2300 SvREFCNT_dec(PL_rs);
2301 if (s[1] == 'x' && s[2]) {
2305 for (s += 2, e = s; *e; e++);
2307 flags = PERL_SCAN_SILENT_ILLDIGIT;
2308 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
2309 if (s + numlen < e) {
2310 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
2314 PL_rs = newSVpvn("", 0);
2315 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
2316 tmps = (U8*)SvPVX(PL_rs);
2317 uvchr_to_utf8(tmps, rschar);
2318 SvCUR_set(PL_rs, UNISKIP(rschar));
2323 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
2324 if (rschar & ~((U8)~0))
2325 PL_rs = &PL_sv_undef;
2326 else if (!rschar && numlen >= 2)
2327 PL_rs = newSVpvn("", 0);
2329 char ch = (char)rschar;
2330 PL_rs = newSVpvn(&ch, 1);
2337 PL_unicode = parse_unicode_opts(&s);
2342 while (*s && !isSPACE(*s)) ++s;
2344 PL_splitstr = savepv(PL_splitstr);
2357 /* The following permits -d:Mod to accepts arguments following an =
2358 in the fashion that -MSome::Mod does. */
2359 if (*s == ':' || *s == '=') {
2362 sv = newSVpv("use Devel::", 0);
2364 /* We now allow -d:Module=Foo,Bar */
2365 while(isALNUM(*s) || *s==':') ++s;
2367 sv_catpv(sv, start);
2369 sv_catpvn(sv, start, s-start);
2370 sv_catpv(sv, " split(/,/,q{");
2375 my_setenv("PERL5DB", SvPV(sv, PL_na));
2378 PL_perldb = PERLDB_ALL;
2387 PL_debug = get_debug_opts(&s) | DEBUG_TOP_FLAG;
2388 #else /* !DEBUGGING */
2389 if (ckWARN_d(WARN_DEBUGGING))
2390 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2391 "Recompile perl with -DDEBUGGING to use -D switch\n");
2392 for (s++; isALNUM(*s); s++) ;
2398 usage(PL_origargv[0]);
2402 Safefree(PL_inplace);
2403 #if defined(__CYGWIN__) /* do backup extension automagically */
2404 if (*(s+1) == '\0') {
2405 PL_inplace = savepv(".bak");
2408 #endif /* __CYGWIN__ */
2409 PL_inplace = savepv(s+1);
2411 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
2414 if (*s == '-') /* Additional switches on #! line. */
2418 case 'I': /* -I handled both here and in parse_body() */
2421 while (*s && isSPACE(*s))
2426 /* ignore trailing spaces (possibly followed by other switches) */
2428 for (e = p; *e && !isSPACE(*e); e++) ;
2432 } while (*p && *p != '-');
2433 e = savepvn(s, e-s);
2434 incpush(e, TRUE, TRUE, FALSE);
2441 Perl_croak(aTHX_ "No directory specified for -I");
2447 SvREFCNT_dec(PL_ors_sv);
2452 PL_ors_sv = newSVpvn("\n",1);
2453 numlen = 3 + (*s == '0');
2454 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
2458 if (RsPARA(PL_rs)) {
2459 PL_ors_sv = newSVpvn("\n\n",2);
2462 PL_ors_sv = newSVsv(PL_rs);
2469 PL_preambleav = newAV();
2471 SV *sv = newSVpvn("use assertions::activate split(/,/,q{",37);
2475 av_push(PL_preambleav, sv);
2478 av_push(PL_preambleav, newSVpvn("use assertions::activate",24));
2481 forbid_setid("-M"); /* XXX ? */
2484 forbid_setid("-m"); /* XXX ? */
2489 /* -M-foo == 'no foo' */
2490 if (*s == '-') { use = "no "; ++s; }
2491 sv = newSVpv(use,0);
2493 /* We allow -M'Module qw(Foo Bar)' */
2494 while(isALNUM(*s) || *s==':') ++s;
2496 sv_catpv(sv, start);
2497 if (*(start-1) == 'm') {
2499 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
2500 sv_catpv( sv, " ()");
2504 Perl_croak(aTHX_ "Module name required with -%c option",
2506 sv_catpvn(sv, start, s-start);
2507 sv_catpv(sv, " split(/,/,q{");
2513 PL_preambleav = newAV();
2514 av_push(PL_preambleav, sv);
2517 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
2529 PL_doswitches = TRUE;
2543 #ifdef MACOS_TRADITIONAL
2544 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2546 PL_do_undump = TRUE;
2555 PerlIO_printf(PerlIO_stdout(),
2556 Perl_form(aTHX_ "\nThis is perl, v%"VDf" built for %s",
2557 PL_patchlevel, ARCHNAME));
2559 /* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
2560 PerlIO_printf(PerlIO_stdout(),
2561 Perl_form(aTHX_ "\nThis is perl, version %vd\n", PL_patchlevel));
2562 PerlIO_printf(PerlIO_stdout(),
2563 Perl_form(aTHX_ " built under %s at %s %s\n",
2564 OSNAME, __DATE__, __TIME__));
2565 PerlIO_printf(PerlIO_stdout(),
2566 Perl_form(aTHX_ " OS Specific Release: %s\n",
2570 #if defined(LOCAL_PATCH_COUNT)
2571 if (LOCAL_PATCH_COUNT > 0)
2572 PerlIO_printf(PerlIO_stdout(),
2573 "\n(with %d registered patch%s, "
2574 "see perl -V for more detail)",
2575 (int)LOCAL_PATCH_COUNT,
2576 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
2579 PerlIO_printf(PerlIO_stdout(),
2580 "\n\nCopyright 1987-2003, Larry Wall\n");
2581 #ifdef MACOS_TRADITIONAL
2582 PerlIO_printf(PerlIO_stdout(),
2583 "\nMac OS port Copyright 1991-2002, Matthias Neeracher;\n"
2584 "maintained by Chris Nandor\n");
2587 PerlIO_printf(PerlIO_stdout(),
2588 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
2591 PerlIO_printf(PerlIO_stdout(),
2592 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2593 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
2596 PerlIO_printf(PerlIO_stdout(),
2597 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2598 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
2601 PerlIO_printf(PerlIO_stdout(),
2602 "atariST series port, ++jrb bammi@cadence.com\n");
2605 PerlIO_printf(PerlIO_stdout(),
2606 "BeOS port Copyright Tom Spindler, 1997-1999\n");
2609 PerlIO_printf(PerlIO_stdout(),
2610 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2002\n");
2613 PerlIO_printf(PerlIO_stdout(),
2614 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
2617 PerlIO_printf(PerlIO_stdout(),
2618 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
2621 PerlIO_printf(PerlIO_stdout(),
2622 "VM/ESA port by Neale Ferguson, 1998-1999\n");
2625 PerlIO_printf(PerlIO_stdout(),
2626 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
2629 PerlIO_printf(PerlIO_stdout(),
2630 "MiNT port by Guido Flohr, 1997-1999\n");
2633 PerlIO_printf(PerlIO_stdout(),
2634 "EPOC port by Olaf Flebbe, 1999-2002\n");
2637 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
2638 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
2641 #ifdef BINARY_BUILD_NOTICE
2642 BINARY_BUILD_NOTICE;
2644 PerlIO_printf(PerlIO_stdout(),
2646 Perl may be copied only under the terms of either the Artistic License or the\n\
2647 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
2648 Complete documentation for Perl, including FAQ lists, should be found on\n\
2649 this system using `man perl' or `perldoc perl'. If you have access to the\n\
2650 Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
2653 if (! (PL_dowarn & G_WARN_ALL_MASK))
2654 PL_dowarn |= G_WARN_ON;
2658 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
2659 if (!specialWARN(PL_compiling.cop_warnings))
2660 SvREFCNT_dec(PL_compiling.cop_warnings);
2661 PL_compiling.cop_warnings = pWARN_ALL ;
2665 PL_dowarn = G_WARN_ALL_OFF;
2666 if (!specialWARN(PL_compiling.cop_warnings))
2667 SvREFCNT_dec(PL_compiling.cop_warnings);
2668 PL_compiling.cop_warnings = pWARN_NONE ;
2673 if (s[1] == '-') /* Additional switches on #! line. */
2678 #if defined(WIN32) || !defined(PERL_STRICT_CR)
2684 #ifdef ALTERNATE_SHEBANG
2685 case 'S': /* OS/2 needs -S on "extproc" line. */
2693 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
2698 /* compliments of Tom Christiansen */
2700 /* unexec() can be found in the Gnu emacs distribution */
2701 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
2704 Perl_my_unexec(pTHX)
2712 prog = newSVpv(BIN_EXP, 0);
2713 sv_catpv(prog, "/perl");
2714 file = newSVpv(PL_origfilename, 0);
2715 sv_catpv(file, ".perldump");
2717 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2718 /* unexec prints msg to stderr in case of failure */
2719 PerlProc_exit(status);
2722 # include <lib$routines.h>
2723 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
2725 ABORT(); /* for use with undump */
2730 /* initialize curinterp */
2736 # define PERLVAR(var,type)
2737 # define PERLVARA(var,n,type)
2738 # if defined(PERL_IMPLICIT_CONTEXT)
2739 # if defined(USE_5005THREADS)
2740 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2741 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2742 # else /* !USE_5005THREADS */
2743 # define PERLVARI(var,type,init) aTHX->var = init;
2744 # define PERLVARIC(var,type,init) aTHX->var = init;
2745 # endif /* USE_5005THREADS */
2747 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2748 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2750 # include "intrpvar.h"
2751 # ifndef USE_5005THREADS
2752 # include "thrdvar.h"
2759 # define PERLVAR(var,type)
2760 # define PERLVARA(var,n,type)
2761 # define PERLVARI(var,type,init) PL_##var = init;
2762 # define PERLVARIC(var,type,init) PL_##var = init;
2763 # include "intrpvar.h"
2764 # ifndef USE_5005THREADS
2765 # include "thrdvar.h"
2776 S_init_main_stash(pTHX)
2780 PL_curstash = PL_defstash = newHV();
2781 PL_curstname = newSVpvn("main",4);
2782 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2783 SvREFCNT_dec(GvHV(gv));
2784 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
2786 HvNAME(PL_defstash) = savepv("main");
2787 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2788 GvMULTI_on(PL_incgv);
2789 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2790 GvMULTI_on(PL_hintgv);
2791 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2792 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2793 GvMULTI_on(PL_errgv);
2794 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2795 GvMULTI_on(PL_replgv);
2796 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
2797 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2798 sv_setpvn(ERRSV, "", 0);
2799 PL_curstash = PL_defstash;
2800 CopSTASH_set(&PL_compiling, PL_defstash);
2801 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
2802 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
2803 /* We must init $/ before switches are processed. */
2804 sv_setpvn(get_sv("/", TRUE), "\n", 1);
2808 S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
2812 char *cpp_discard_flag;
2818 PL_origfilename = savepv("-e");
2821 /* if find_script() returns, it returns a malloc()-ed value */
2822 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
2824 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2825 char *s = scriptname + 8;
2826 *fdscript = atoi(s);
2830 scriptname = savepv(s + 1);
2831 Safefree(PL_origfilename);
2832 PL_origfilename = scriptname;
2837 CopFILE_free(PL_curcop);
2838 CopFILE_set(PL_curcop, PL_origfilename);
2839 if (strEQ(PL_origfilename,"-"))
2841 if (*fdscript >= 0) {
2842 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
2843 # if defined(HAS_FCNTL) && defined(F_SETFD)
2845 /* ensure close-on-exec */
2846 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1);
2849 else if (PL_preprocess) {
2850 char *cpp_cfg = CPPSTDIN;
2851 SV *cpp = newSVpvn("",0);
2852 SV *cmd = NEWSV(0,0);
2854 if (strEQ(cpp_cfg, "cppstdin"))
2855 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
2856 sv_catpv(cpp, cpp_cfg);
2859 sv_catpvn(sv, "-I", 2);
2860 sv_catpv(sv,PRIVLIB_EXP);
2863 DEBUG_P(PerlIO_printf(Perl_debug_log,
2864 "PL_preprocess: scriptname=\"%s\", cpp=\"%s\", sv=\"%s\", CPPMINUS=\"%s\"\n",
2865 scriptname, SvPVX (cpp), SvPVX (sv), CPPMINUS));
2867 # if defined(MSDOS) || defined(WIN32) || defined(VMS)
2874 cpp_discard_flag = "";
2876 cpp_discard_flag = "-C";
2880 perl = os2_execname(aTHX);
2882 perl = PL_origargv[0];
2886 /* This strips off Perl comments which might interfere with
2887 the C pre-processor, including #!. #line directives are
2888 deliberately stripped to avoid confusion with Perl's version
2889 of #line. FWP played some golf with it so it will fit
2890 into VMS's 255 character buffer.
2893 code = "(1../^#!.*perl/i)|/^\\s*#(?!\\s*((ifn?|un)def|(el|end)?if|define|include|else|error|pragma)\\b)/||!($|=1)||print";
2895 code = "/^\\s*#(?!\\s*((ifn?|un)def|(el|end)?if|define|include|else|error|pragma)\\b)/||!($|=1)||print";
2897 Perl_sv_setpvf(aTHX_ cmd, "\
2898 %s -ne%s%s%s %s | %"SVf" %s %"SVf" %s",
2899 perl, quote, code, quote, scriptname, cpp,
2900 cpp_discard_flag, sv, CPPMINUS);
2902 PL_doextract = FALSE;
2903 # ifdef IAMSUID /* actually, this is caught earlier */
2904 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
2906 (void)seteuid(PL_uid); /* musn't stay setuid root */
2908 # ifdef HAS_SETREUID
2909 (void)setreuid((Uid_t)-1, PL_uid);
2911 # ifdef HAS_SETRESUID
2912 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
2914 PerlProc_setuid(PL_uid);
2918 if (PerlProc_geteuid() != PL_uid)
2919 Perl_croak(aTHX_ "Can't do seteuid!\n");
2921 # endif /* IAMSUID */
2923 DEBUG_P(PerlIO_printf(Perl_debug_log,
2924 "PL_preprocess: cmd=\"%s\"\n",
2927 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
2931 else if (!*scriptname) {
2932 forbid_setid("program input from stdin");
2933 PL_rsfp = PerlIO_stdin();
2936 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
2937 # if defined(HAS_FCNTL) && defined(F_SETFD)
2939 /* ensure close-on-exec */
2940 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1);
2945 # ifndef IAMSUID /* in case script is not readable before setuid */
2947 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
2948 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2951 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT,
2952 BIN_EXP, (int)PERL_REVISION,
2954 (int)PERL_SUBVERSION), PL_origargv);
2955 Perl_croak(aTHX_ "Can't do setuid\n");
2961 Perl_croak(aTHX_ "Can't open perl script: %s\n",
2964 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
2965 CopFILE(PL_curcop), Strerror(errno));
2971 * I_SYSSTATVFS HAS_FSTATVFS
2973 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
2974 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2975 * here so that metaconfig picks them up. */
2979 S_fd_on_nosuid_fs(pTHX_ int fd)
2981 int check_okay = 0; /* able to do all the required sys/libcalls */
2982 int on_nosuid = 0; /* the fd is on a nosuid fs */
2984 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
2985 * fstatvfs() is UNIX98.
2986 * fstatfs() is 4.3 BSD.
2987 * ustat()+getmnt() is pre-4.3 BSD.
2988 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2989 * an irrelevant filesystem while trying to reach the right one.
2992 #undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2994 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2995 defined(HAS_FSTATVFS)
2996 # define FD_ON_NOSUID_CHECK_OKAY
2997 struct statvfs stfs;
2999 check_okay = fstatvfs(fd, &stfs) == 0;
3000 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
3001 # endif /* fstatvfs */
3003 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
3004 defined(PERL_MOUNT_NOSUID) && \
3005 defined(HAS_FSTATFS) && \
3006 defined(HAS_STRUCT_STATFS) && \
3007 defined(HAS_STRUCT_STATFS_F_FLAGS)
3008 # define FD_ON_NOSUID_CHECK_OKAY
3011 check_okay = fstatfs(fd, &stfs) == 0;
3012 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
3013 # endif /* fstatfs */
3015 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
3016 defined(PERL_MOUNT_NOSUID) && \
3017 defined(HAS_FSTAT) && \
3018 defined(HAS_USTAT) && \
3019 defined(HAS_GETMNT) && \
3020 defined(HAS_STRUCT_FS_DATA) && \
3022 # define FD_ON_NOSUID_CHECK_OKAY
3025 if (fstat(fd, &fdst) == 0) {
3027 if (ustat(fdst.st_dev, &us) == 0) {
3029 /* NOSTAT_ONE here because we're not examining fields which
3030 * vary between that case and STAT_ONE. */
3031 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
3032 size_t cmplen = sizeof(us.f_fname);
3033 if (sizeof(fsd.fd_req.path) < cmplen)
3034 cmplen = sizeof(fsd.fd_req.path);
3035 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
3036 fdst.st_dev == fsd.fd_req.dev) {
3038 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
3044 # endif /* fstat+ustat+getmnt */
3046 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
3047 defined(HAS_GETMNTENT) && \
3048 defined(HAS_HASMNTOPT) && \
3049 defined(MNTOPT_NOSUID)
3050 # define FD_ON_NOSUID_CHECK_OKAY
3051 FILE *mtab = fopen("/etc/mtab", "r");
3052 struct mntent *entry;
3055 if (mtab && (fstat(fd, &stb) == 0)) {
3056 while (entry = getmntent(mtab)) {
3057 if (stat(entry->mnt_dir, &fsb) == 0
3058 && fsb.st_dev == stb.st_dev)
3060 /* found the filesystem */
3062 if (hasmntopt(entry, MNTOPT_NOSUID))
3065 } /* A single fs may well fail its stat(). */
3070 # endif /* getmntent+hasmntopt */
3073 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
3076 #endif /* IAMSUID */
3079 S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
3085 /* do we need to emulate setuid on scripts? */
3087 /* This code is for those BSD systems that have setuid #! scripts disabled
3088 * in the kernel because of a security problem. Merely defining DOSUID
3089 * in perl will not fix that problem, but if you have disabled setuid
3090 * scripts in the kernel, this will attempt to emulate setuid and setgid
3091 * on scripts that have those now-otherwise-useless bits set. The setuid
3092 * root version must be called suidperl or sperlN.NNN. If regular perl
3093 * discovers that it has opened a setuid script, it calls suidperl with
3094 * the same argv that it had. If suidperl finds that the script it has
3095 * just opened is NOT setuid root, it sets the effective uid back to the
3096 * uid. We don't just make perl setuid root because that loses the
3097 * effective uid we had before invoking perl, if it was different from the
3100 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
3101 * be defined in suidperl only. suidperl must be setuid root. The
3102 * Configure script will set this up for you if you want it.
3108 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
3109 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
3110 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
3115 #ifndef HAS_SETREUID
3116 /* On this access check to make sure the directories are readable,
3117 * there is actually a small window that the user could use to make
3118 * filename point to an accessible directory. So there is a faint
3119 * chance that someone could execute a setuid script down in a
3120 * non-accessible directory. I don't know what to do about that.
3121 * But I don't think it's too important. The manual lies when
3122 * it says access() is useful in setuid programs.
3124 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
3125 Perl_croak(aTHX_ "Permission denied");
3127 /* If we can swap euid and uid, then we can determine access rights
3128 * with a simple stat of the file, and then compare device and
3129 * inode to make sure we did stat() on the same file we opened.
3130 * Then we just have to make sure he or she can execute it.
3137 setreuid(PL_euid,PL_uid) < 0
3140 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
3143 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
3144 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
3145 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
3146 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
3147 #if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
3148 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
3149 Perl_croak(aTHX_ "Permission denied");
3151 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
3152 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
3153 (void)PerlIO_close(PL_rsfp);
3154 Perl_croak(aTHX_ "Permission denied\n");
3158 setreuid(PL_uid,PL_euid) < 0
3160 # if defined(HAS_SETRESUID)
3161 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
3164 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
3165 Perl_croak(aTHX_ "Can't reswap uid and euid");
3166 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
3167 Perl_croak(aTHX_ "Permission denied\n");
3169 #endif /* HAS_SETREUID */
3170 #endif /* IAMSUID */
3172 if (!S_ISREG(PL_statbuf.st_mode))
3173 Perl_croak(aTHX_ "Permission denied");
3174 if (PL_statbuf.st_mode & S_IWOTH)
3175 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
3176 PL_doswitches = FALSE; /* -s is insecure in suid */
3177 CopLINE_inc(PL_curcop);
3178 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
3179 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
3180 Perl_croak(aTHX_ "No #! line");
3181 s = SvPV(PL_linestr,n_a)+2;
3183 while (!isSPACE(*s)) s++;
3184 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
3185 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
3186 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
3187 Perl_croak(aTHX_ "Not a perl script");
3188 while (*s == ' ' || *s == '\t') s++;
3190 * #! arg must be what we saw above. They can invoke it by
3191 * mentioning suidperl explicitly, but they may not add any strange
3192 * arguments beyond what #! says if they do invoke suidperl that way.
3194 len = strlen(validarg);
3195 if (strEQ(validarg," PHOOEY ") ||
3196 strnNE(s,validarg,len) || !isSPACE(s[len]))
3197 Perl_croak(aTHX_ "Args must match #! line");
3200 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
3201 PL_euid == PL_statbuf.st_uid)
3203 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3204 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3205 #endif /* IAMSUID */
3207 if (PL_euid) { /* oops, we're not the setuid root perl */
3208 (void)PerlIO_close(PL_rsfp);
3211 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
3212 (int)PERL_REVISION, (int)PERL_VERSION,
3213 (int)PERL_SUBVERSION), PL_origargv);
3215 Perl_croak(aTHX_ "Can't do setuid\n");
3218 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
3220 (void)setegid(PL_statbuf.st_gid);
3223 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
3225 #ifdef HAS_SETRESGID
3226 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
3228 PerlProc_setgid(PL_statbuf.st_gid);
3232 if (PerlProc_getegid() != PL_statbuf.st_gid)
3233 Perl_croak(aTHX_ "Can't do setegid!\n");
3235 if (PL_statbuf.st_mode & S_ISUID) {
3236 if (PL_statbuf.st_uid != PL_euid)
3238 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
3241 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
3243 #ifdef HAS_SETRESUID
3244 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
3246 PerlProc_setuid(PL_statbuf.st_uid);
3250 if (PerlProc_geteuid() != PL_statbuf.st_uid)
3251 Perl_croak(aTHX_ "Can't do seteuid!\n");
3253 else if (PL_uid) { /* oops, mustn't run as root */
3255 (void)seteuid((Uid_t)PL_uid);
3258 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
3260 #ifdef HAS_SETRESUID
3261 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
3263 PerlProc_setuid((Uid_t)PL_uid);
3267 if (PerlProc_geteuid() != PL_uid)
3268 Perl_croak(aTHX_ "Can't do seteuid!\n");
3271 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
3272 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
3275 else if (PL_preprocess)
3276 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
3277 else if (fdscript >= 0)
3278 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
3280 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
3282 /* We absolutely must clear out any saved ids here, so we */
3283 /* exec the real perl, substituting fd script for scriptname. */
3284 /* (We pass script name as "subdir" of fd, which perl will grok.) */
3285 PerlIO_rewind(PL_rsfp);
3286 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
3287 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3288 if (!PL_origargv[which])
3289 Perl_croak(aTHX_ "Permission denied");
3290 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
3291 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
3292 #if defined(HAS_FCNTL) && defined(F_SETFD)
3293 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
3295 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
3296 (int)PERL_REVISION, (int)PERL_VERSION,
3297 (int)PERL_SUBVERSION), PL_origargv);/* try again */
3298 Perl_croak(aTHX_ "Can't do setuid\n");
3299 #endif /* IAMSUID */
3301 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
3302 #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
3303 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3304 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3306 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3309 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3310 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3311 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3312 /* not set-id, must be wrapped */
3318 S_find_beginning(pTHX)
3320 register char *s, *s2;
3321 #ifdef MACOS_TRADITIONAL
3325 /* skip forward in input to the real script? */
3328 #ifdef MACOS_TRADITIONAL
3329 /* Since the Mac OS does not honor #! arguments for us, we do it ourselves */
3331 while (PL_doextract || gMacPerl_AlwaysExtract) {
3332 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3333 if (!gMacPerl_AlwaysExtract)
3334 Perl_croak(aTHX_ "No Perl script found in input\n");
3336 if (PL_doextract) /* require explicit override ? */
3337 if (!OverrideExtract(PL_origfilename))
3338 Perl_croak(aTHX_ "User aborted script\n");
3340 PL_doextract = FALSE;
3342 /* Pater peccavi, file does not have #! */
3343 PerlIO_rewind(PL_rsfp);
3348 while (PL_doextract) {
3349 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
3350 Perl_croak(aTHX_ "No Perl script found in input\n");
3353 if (*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))) {
3354 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3355 PL_doextract = FALSE;
3356 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3358 while (*s == ' ' || *s == '\t') s++;
3360 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3361 if (strnEQ(s2-4,"perl",4))
3363 while ((s = moreswitches(s)))
3366 #ifdef MACOS_TRADITIONAL
3367 /* We are always searching for the #!perl line in MacPerl,
3368 * so if we find it, still keep the line count correct
3369 * by counting lines we already skipped over
3371 for (; maclines > 0 ; maclines--)
3372 PerlIO_ungetc(PL_rsfp, '\n');
3376 /* gMacPerl_AlwaysExtract is false in MPW tool */
3377 } else if (gMacPerl_AlwaysExtract) {
3388 PL_uid = PerlProc_getuid();
3389 PL_euid = PerlProc_geteuid();
3390 PL_gid = PerlProc_getgid();
3391 PL_egid = PerlProc_getegid();
3393 PL_uid |= PL_gid << 16;
3394 PL_euid |= PL_egid << 16;
3396 /* Should not happen: */
3397 CHECK_MALLOC_TAINT(PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3398 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3401 /* This is used very early in the lifetime of the program,
3402 * before even the options are parsed, so PL_tainting has
3403 * not been initialized properly. The variable PL_earlytaint
3404 * is set early in main() to the result of this function. */
3406 Perl_doing_taint(int argc, char *argv[], char *envp[])
3408 int uid = PerlProc_getuid();
3409 int euid = PerlProc_geteuid();
3410 int gid = PerlProc_getgid();
3411 int egid = PerlProc_getegid();
3417 if (uid && (euid != uid || egid != gid))
3419 /* This is a really primitive check; environment gets ignored only
3420 * if -T are the first chars together; otherwise one gets
3421 * "Too late" message. */
3422 if ( argc > 1 && argv[1][0] == '-'
3423 && (argv[1][1] == 't' || argv[1][1] == 'T') )
3429 S_forbid_setid(pTHX_ char *s)
3431 if (PL_euid != PL_uid)
3432 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3433 if (PL_egid != PL_gid)
3434 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
3438 Perl_init_debugger(pTHX)
3440 HV *ostash = PL_curstash;
3442 PL_curstash = PL_debstash;
3443 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3444 AvREAL_off(PL_dbargs);
3445 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3446 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3447 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
3448 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3449 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
3450 sv_setiv(PL_DBsingle, 0);
3451 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
3452 sv_setiv(PL_DBtrace, 0);
3453 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
3454 sv_setiv(PL_DBsignal, 0);
3455 PL_DBassertion = GvSV((gv_fetchpv("assertion", GV_ADDMULTI, SVt_PV)));
3456 sv_setiv(PL_DBassertion, 0);
3457 PL_curstash = ostash;
3460 #ifndef STRESS_REALLOC
3461 #define REASONABLE(size) (size)
3463 #define REASONABLE(size) (1) /* unreasonable */
3467 Perl_init_stacks(pTHX)
3469 /* start with 128-item stack and 8K cxstack */
3470 PL_curstackinfo = new_stackinfo(REASONABLE(128),
3471 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3472 PL_curstackinfo->si_type = PERLSI_MAIN;
3473 PL_curstack = PL_curstackinfo->si_stack;
3474 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
3476 PL_stack_base = AvARRAY(PL_curstack);
3477 PL_stack_sp = PL_stack_base;
3478 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
3480 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3483 PL_tmps_max = REASONABLE(128);
3485 New(54,PL_markstack,REASONABLE(32),I32);
3486 PL_markstack_ptr = PL_markstack;
3487 PL_markstack_max = PL_markstack + REASONABLE(32);
3491 New(54,PL_scopestack,REASONABLE(32),I32);
3492 PL_scopestack_ix = 0;
3493 PL_scopestack_max = REASONABLE(32);
3495 New(54,PL_savestack,REASONABLE(128),ANY);
3496 PL_savestack_ix = 0;
3497 PL_savestack_max = REASONABLE(128);
3499 New(54,PL_retstack,REASONABLE(16),OP*);
3501 PL_retstack_max = REASONABLE(16);
3509 while (PL_curstackinfo->si_next)
3510 PL_curstackinfo = PL_curstackinfo->si_next;
3511 while (PL_curstackinfo) {
3512 PERL_SI *p = PL_curstackinfo->si_prev;
3513 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3514 Safefree(PL_curstackinfo->si_cxstack);
3515 Safefree(PL_curstackinfo);
3516 PL_curstackinfo = p;
3518 Safefree(PL_tmps_stack);
3519 Safefree(PL_markstack);
3520 Safefree(PL_scopestack);
3521 Safefree(PL_savestack);
3522 Safefree(PL_retstack);
3531 lex_start(PL_linestr);
3533 PL_subname = newSVpvn("main",4);
3537 S_init_predump_symbols(pTHX)
3542 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3543 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3544 GvMULTI_on(PL_stdingv);
3545 io = GvIOp(PL_stdingv);
3546 IoTYPE(io) = IoTYPE_RDONLY;
3547 IoIFP(io) = PerlIO_stdin();
3548 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
3550 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3552 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
3555 IoTYPE(io) = IoTYPE_WRONLY;
3556 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
3558 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
3560 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3562 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3563 GvMULTI_on(PL_stderrgv);
3564 io = GvIOp(PL_stderrgv);
3565 IoTYPE(io) = IoTYPE_WRONLY;
3566 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
3567 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
3569 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3571 PL_statname = NEWSV(66,0); /* last filename we did stat on */
3574 Safefree(PL_osname);
3575 PL_osname = savepv(OSNAME);
3579 Perl_init_argv_symbols(pTHX_ register int argc, register char **argv)
3582 argc--,argv++; /* skip name of script */
3583 if (PL_doswitches) {
3584 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3587 if (argv[0][1] == '-' && !argv[0][2]) {
3591 if ((s = strchr(argv[0], '='))) {
3593 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
3596 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
3599 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3600 GvMULTI_on(PL_argvgv);
3601 (void)gv_AVadd(PL_argvgv);
3602 av_clear(GvAVn(PL_argvgv));
3603 for (; argc > 0; argc--,argv++) {
3604 SV *sv = newSVpv(argv[0],0);
3605 av_push(GvAVn(PL_argvgv),sv);
3606 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
3607 if (PL_unicode & PERL_UNICODE_ARGV_FLAG)
3610 if (PL_unicode & PERL_UNICODE_WIDESYSCALLS_FLAG) /* Sarathy? */
3611 (void)sv_utf8_decode(sv);
3616 #ifdef HAS_PROCSELFEXE
3617 /* This is a function so that we don't hold on to MAXPATHLEN
3618 bytes of stack longer than necessary
3621 S_procself_val(pTHX_ SV *sv, char *arg0)
3623 char buf[MAXPATHLEN];
3624 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
3626 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
3627 includes a spurious NUL which will cause $^X to fail in system
3628 or backticks (this will prevent extensions from being built and
3629 many tests from working). readlink is not meant to add a NUL.
3630 Normal readlink works fine.
3632 if (len > 0 && buf[len-1] == '\0') {
3636 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
3637 returning the text "unknown" from the readlink rather than the path
3638 to the executable (or returning an error from the readlink). Any valid
3639 path has a '/' in it somewhere, so use that to validate the result.
3640 See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
3642 if (len > 0 && memchr(buf, '/', len)) {
3643 sv_setpvn(sv,buf,len);
3649 #endif /* HAS_PROCSELFEXE */
3652 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
3658 PL_toptarget = NEWSV(0,0);
3659 sv_upgrade(PL_toptarget, SVt_PVFM);
3660 sv_setpvn(PL_toptarget, "", 0);
3661 PL_bodytarget = NEWSV(0,0);
3662 sv_upgrade(PL_bodytarget, SVt_PVFM);
3663 sv_setpvn(PL_bodytarget, "", 0);
3664 PL_formtarget = PL_bodytarget;
3668 init_argv_symbols(argc,argv);
3670 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
3671 #ifdef MACOS_TRADITIONAL
3672 /* $0 is not majick on a Mac */
3673 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3675 sv_setpv(GvSV(tmpgv),PL_origfilename);
3676 magicname("0", "0", 1);
3679 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV))) {/* $^X */
3680 #ifdef HAS_PROCSELFEXE
3681 S_procself_val(aTHX_ GvSV(tmpgv), PL_origargv[0]);
3684 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
3686 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
3690 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
3692 GvMULTI_on(PL_envgv);
3693 hv = GvHVn(PL_envgv);
3694 hv_magic(hv, Nullgv, PERL_MAGIC_env);
3695 #ifdef USE_ENVIRON_ARRAY
3696 /* Note that if the supplied env parameter is actually a copy
3697 of the global environ then it may now point to free'd memory
3698 if the environment has been modified since. To avoid this
3699 problem we treat env==NULL as meaning 'use the default'
3704 # ifdef USE_ITHREADS
3705 && PL_curinterp == aTHX
3709 environ[0] = Nullch;
3712 for (; *env; env++) {
3713 if (!(s = strchr(*env,'=')))
3720 sv = newSVpv(s+1, 0);
3721 (void)hv_store(hv, *env, s - *env, sv, 0);
3725 #endif /* USE_ENVIRON_ARRAY */
3728 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV))) {
3729 SvREADONLY_off(GvSV(tmpgv));
3730 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
3731 SvREADONLY_on(GvSV(tmpgv));
3733 #ifdef THREADS_HAVE_PIDS
3734 PL_ppid = (IV)getppid();
3737 /* touch @F array to prevent spurious warnings 20020415 MJD */
3739 (void) get_av("main::F", TRUE | GV_ADDMULTI);
3741 /* touch @- and @+ arrays to prevent spurious warnings 20020415 MJD */
3742 (void) get_av("main::-", TRUE | GV_ADDMULTI);
3743 (void) get_av("main::+", TRUE | GV_ADDMULTI);
3747 S_init_perllib(pTHX)
3752 s = PerlEnv_getenv("PERL5LIB");
3754 incpush(s, TRUE, TRUE, TRUE);
3756 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE, TRUE);
3758 /* Treat PERL5?LIB as a possible search list logical name -- the
3759 * "natural" VMS idiom for a Unix path string. We allow each
3760 * element to be a set of |-separated directories for compatibility.
3764 if (my_trnlnm("PERL5LIB",buf,0))
3765 do { incpush(buf,TRUE,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
3767 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE,TRUE);
3771 /* Use the ~-expanded versions of APPLLIB (undocumented),
3772 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
3775 incpush(APPLLIB_EXP, TRUE, TRUE, TRUE);
3779 incpush(ARCHLIB_EXP, FALSE, FALSE, TRUE);
3781 #ifdef MACOS_TRADITIONAL
3784 SV * privdir = NEWSV(55, 0);
3785 char * macperl = PerlEnv_getenv("MACPERL");
3790 Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl);
3791 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3792 incpush(SvPVX(privdir), TRUE, FALSE, TRUE);
3793 Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl);
3794 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3795 incpush(SvPVX(privdir), TRUE, FALSE, TRUE);
3797 SvREFCNT_dec(privdir);
3800 incpush(":", FALSE, FALSE, TRUE);
3803 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
3806 incpush(PRIVLIB_EXP, TRUE, FALSE, TRUE);
3808 incpush(PRIVLIB_EXP, FALSE, FALSE, TRUE);
3812 /* sitearch is always relative to sitelib on Windows for
3813 * DLL-based path intuition to work correctly */
3814 # if !defined(WIN32)
3815 incpush(SITEARCH_EXP, FALSE, FALSE, TRUE);
3821 /* this picks up sitearch as well */
3822 incpush(SITELIB_EXP, TRUE, FALSE, TRUE);
3824 incpush(SITELIB_EXP, FALSE, FALSE, TRUE);
3828 #ifdef SITELIB_STEM /* Search for version-specific dirs below here */
3829 incpush(SITELIB_STEM, FALSE, TRUE, TRUE);
3832 #ifdef PERL_VENDORARCH_EXP
3833 /* vendorarch is always relative to vendorlib on Windows for
3834 * DLL-based path intuition to work correctly */
3835 # if !defined(WIN32)
3836 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE, TRUE);
3840 #ifdef PERL_VENDORLIB_EXP
3842 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE, TRUE); /* this picks up vendorarch as well */
3844 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE, TRUE);
3848 #ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
3849 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE, TRUE);
3852 #ifdef PERL_OTHERLIBDIRS
3853 incpush(PERL_OTHERLIBDIRS, TRUE, TRUE, TRUE);
3857 incpush(".", FALSE, FALSE, TRUE);
3858 #endif /* MACOS_TRADITIONAL */
3861 #if defined(DOSISH) || defined(EPOC)
3862 # define PERLLIB_SEP ';'
3865 # define PERLLIB_SEP '|'
3867 # if defined(MACOS_TRADITIONAL)
3868 # define PERLLIB_SEP ','
3870 # define PERLLIB_SEP ':'
3874 #ifndef PERLLIB_MANGLE
3875 # define PERLLIB_MANGLE(s,n) (s)
3879 S_incpush(pTHX_ char *p, int addsubdirs, int addoldvers, int usesep)
3881 SV *subdir = Nullsv;
3886 if (addsubdirs || addoldvers) {
3887 subdir = sv_newmortal();
3890 /* Break at all separators */
3892 SV *libdir = NEWSV(55,0);
3895 /* skip any consecutive separators */
3897 while ( *p == PERLLIB_SEP ) {
3898 /* Uncomment the next line for PATH semantics */
3899 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
3904 if ( usesep && (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
3905 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
3910 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
3911 p = Nullch; /* break out */
3913 #ifdef MACOS_TRADITIONAL
3914 if (!strchr(SvPVX(libdir), ':')) {
3917 sv_setpv(libdir, MacPerl_CanonDir(SvPVX(libdir), buf, 0));
3919 if (SvPVX(libdir)[SvCUR(libdir)-1] != ':')
3920 sv_catpv(libdir, ":");
3924 * BEFORE pushing libdir onto @INC we may first push version- and
3925 * archname-specific sub-directories.
3927 if (addsubdirs || addoldvers) {
3928 #ifdef PERL_INC_VERSION_LIST
3929 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
3930 const char *incverlist[] = { PERL_INC_VERSION_LIST };
3931 const char **incver;
3938 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
3940 while (unix[len-1] == '/') len--; /* Cosmetic */
3941 sv_usepvn(libdir,unix,len);
3944 PerlIO_printf(Perl_error_log,
3945 "Failed to unixify @INC element \"%s\"\n",
3949 #ifdef MACOS_TRADITIONAL
3950 #define PERL_AV_SUFFIX_FMT ""
3951 #define PERL_ARCH_FMT "%s:"
3952 #define PERL_ARCH_FMT_PATH PERL_FS_VER_FMT PERL_AV_SUFFIX_FMT
3954 #define PERL_AV_SUFFIX_FMT "/"
3955 #define PERL_ARCH_FMT "/%s"
3956 #define PERL_ARCH_FMT_PATH PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT
3958 /* .../version/archname if -d .../version/archname */
3959 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH PERL_ARCH_FMT,
3961 (int)PERL_REVISION, (int)PERL_VERSION,
3962 (int)PERL_SUBVERSION, ARCHNAME);
3963 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3964 S_ISDIR(tmpstatbuf.st_mode))
3965 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3967 /* .../version if -d .../version */
3968 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH, libdir,
3969 (int)PERL_REVISION, (int)PERL_VERSION,
3970 (int)PERL_SUBVERSION);
3971 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3972 S_ISDIR(tmpstatbuf.st_mode))
3973 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3975 /* .../archname if -d .../archname */
3976 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, ARCHNAME);
3977 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3978 S_ISDIR(tmpstatbuf.st_mode))
3979 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3982 #ifdef PERL_INC_VERSION_LIST
3984 for (incver = incverlist; *incver; incver++) {
3985 /* .../xxx if -d .../xxx */
3986 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, *incver);
3987 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3988 S_ISDIR(tmpstatbuf.st_mode))
3989 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3995 /* finally push this lib directory on the end of @INC */
3996 av_push(GvAVn(PL_incgv), libdir);
4000 #ifdef USE_5005THREADS
4001 STATIC struct perl_thread *
4002 S_init_main_thread(pTHX)
4004 #if !defined(PERL_IMPLICIT_CONTEXT)
4005 struct perl_thread *thr;
4009 Newz(53, thr, 1, struct perl_thread);
4010 PL_curcop = &PL_compiling;
4011 thr->interp = PERL_GET_INTERP;
4012 thr->cvcache = newHV();
4013 thr->threadsv = newAV();
4014 /* thr->threadsvp is set when find_threadsv is called */
4015 thr->specific = newAV();
4016 thr->flags = THRf_R_JOINABLE;
4017 MUTEX_INIT(&thr->mutex);
4018 /* Handcraft thrsv similarly to mess_sv */
4019 New(53, PL_thrsv, 1, SV);
4020 Newz(53, xpv, 1, XPV);
4021 SvFLAGS(PL_thrsv) = SVt_PV;
4022 SvANY(PL_thrsv) = (void*)xpv;
4023 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
4024 SvPVX(PL_thrsv) = (char*)thr;
4025 SvCUR_set(PL_thrsv, sizeof(thr));
4026 SvLEN_set(PL_thrsv, sizeof(thr));
4027 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
4028 thr->oursv = PL_thrsv;
4029 PL_chopset = " \n-";
4032 MUTEX_LOCK(&PL_threads_mutex);
4038 MUTEX_UNLOCK(&PL_threads_mutex);
4040 #ifdef HAVE_THREAD_INTERN
4041 Perl_init_thread_intern(thr);
4044 #ifdef SET_THREAD_SELF
4045 SET_THREAD_SELF(thr);
4047 thr->self = pthread_self();
4048 #endif /* SET_THREAD_SELF */
4052 * These must come after the thread self setting
4053 * because sv_setpvn does SvTAINT and the taint
4054 * fields thread selfness being set.
4056 PL_toptarget = NEWSV(0,0);
4057 sv_upgrade(PL_toptarget, SVt_PVFM);
4058 sv_setpvn(PL_toptarget, "", 0);
4059 PL_bodytarget = NEWSV(0,0);
4060 sv_upgrade(PL_bodytarget, SVt_PVFM);
4061 sv_setpvn(PL_bodytarget, "", 0);
4062 PL_formtarget = PL_bodytarget;
4063 thr->errsv = newSVpvn("", 0);
4064 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
4067 PL_peepp = MEMBER_TO_FPTR(Perl_peep);
4068 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
4069 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
4070 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
4071 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
4072 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
4074 PL_reginterp_cnt = 0;
4078 #endif /* USE_5005THREADS */
4081 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
4084 line_t oldline = CopLINE(PL_curcop);
4090 while (AvFILL(paramList) >= 0) {
4091 cv = (CV*)av_shift(paramList);
4093 if (paramList == PL_beginav) {
4094 /* save PL_beginav for compiler */
4095 if (! PL_beginav_save)
4096 PL_beginav_save = newAV();
4097 av_push(PL_beginav_save, (SV*)cv);
4099 else if (paramList == PL_checkav) {
4100 /* save PL_checkav for compiler */
4101 if (! PL_checkav_save)
4102 PL_checkav_save = newAV();
4103 av_push(PL_checkav_save, (SV*)cv);
4108 #ifdef PERL_FLEXIBLE_EXCEPTIONS
4109 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_list_body), cv);
4115 #ifndef PERL_FLEXIBLE_EXCEPTIONS
4119 (void)SvPV(atsv, len);
4121 PL_curcop = &PL_compiling;
4122 CopLINE_set(PL_curcop, oldline);
4123 if (paramList == PL_beginav)
4124 sv_catpv(atsv, "BEGIN failed--compilation aborted");
4126 Perl_sv_catpvf(aTHX_ atsv,
4127 "%s failed--call queue aborted",
4128 paramList == PL_checkav ? "CHECK"
4129 : paramList == PL_initav ? "INIT"
4131 while (PL_scopestack_ix > oldscope)
4134 Perl_croak(aTHX_ "%"SVf"", atsv);
4141 /* my_exit() was called */
4142 while (PL_scopestack_ix > oldscope)
4145 PL_curstash = PL_defstash;
4146 PL_curcop = &PL_compiling;
4147 CopLINE_set(PL_curcop, oldline);
4149 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
4150 if (paramList == PL_beginav)
4151 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
4153 Perl_croak(aTHX_ "%s failed--call queue aborted",
4154 paramList == PL_checkav ? "CHECK"
4155 : paramList == PL_initav ? "INIT"
4162 PL_curcop = &PL_compiling;
4163 CopLINE_set(PL_curcop, oldline);
4166 PerlIO_printf(Perl_error_log, "panic: restartop\n");
4174 #ifdef PERL_FLEXIBLE_EXCEPTIONS
4176 S_vcall_list_body(pTHX_ va_list args)
4178 CV *cv = va_arg(args, CV*);
4179 return call_list_body(cv);
4184 S_call_list_body(pTHX_ CV *cv)
4186 PUSHMARK(PL_stack_sp);
4187 call_sv((SV*)cv, G_EVAL|G_DISCARD);
4192 Perl_my_exit(pTHX_ U32 status)
4194 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
4195 thr, (unsigned long) status));
4204 STATUS_NATIVE_SET(status);
4211 Perl_my_failure_exit(pTHX)
4214 if (vaxc$errno & 1) {
4215 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
4216 STATUS_NATIVE_SET(44);
4219 if (!vaxc$errno && errno) /* unlikely */
4220 STATUS_NATIVE_SET(44);
4222 STATUS_NATIVE_SET(vaxc$errno);
4227 STATUS_POSIX_SET(errno);
4229 exitstatus = STATUS_POSIX >> 8;
4230 if (exitstatus & 255)
4231 STATUS_POSIX_SET(exitstatus);
4233 STATUS_POSIX_SET(255);
4240 S_my_exit_jump(pTHX)
4242 register PERL_CONTEXT *cx;
4247 SvREFCNT_dec(PL_e_script);
4248 PL_e_script = Nullsv;
4251 POPSTACK_TO(PL_mainstack);
4252 if (cxstack_ix >= 0) {
4255 POPBLOCK(cx,PL_curpm);
4263 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen)
4266 p = SvPVX(PL_e_script);
4267 nl = strchr(p, '\n');
4268 nl = (nl) ? nl+1 : SvEND(PL_e_script);
4270 filter_del(read_e_script);
4273 sv_catpvn(buf_sv, p, nl-p);
4274 sv_chop(PL_e_script, nl);