3 * Copyright (c) 1987-2001 Larry Wall
5 * You may distribute under the terms of either the GNU General Public
6 * License or the Artistic License, as specified in the README file.
11 * "A ship then new they built for him/of mithril and of elven glass" --Bilbo
15 #define PERL_IN_PERL_C
17 #include "patchlevel.h" /* for local_patches */
19 /* XXX If this causes problems, set i_unistd=undef in the hint file. */
24 #if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE)
25 char *getenv (char *); /* Usually in <stdlib.h> */
28 static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
36 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
42 #if defined(USE_5005THREADS)
43 # define INIT_TLS_AND_INTERP \
45 if (!PL_curinterp) { \
46 PERL_SET_INTERP(my_perl); \
52 # if defined(USE_ITHREADS)
53 # define INIT_TLS_AND_INTERP \
55 if (!PL_curinterp) { \
56 PERL_SET_INTERP(my_perl); \
59 PERL_SET_THX(my_perl); \
63 PERL_SET_THX(my_perl); \
67 # define INIT_TLS_AND_INTERP \
69 if (!PL_curinterp) { \
70 PERL_SET_INTERP(my_perl); \
72 PERL_SET_THX(my_perl); \
77 #ifdef PERL_IMPLICIT_SYS
79 perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
80 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
81 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
82 struct IPerlDir* ipD, struct IPerlSock* ipS,
83 struct IPerlProc* ipP)
85 PerlInterpreter *my_perl;
86 /* New() needs interpreter, so call malloc() instead */
87 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
89 Zero(my_perl, 1, PerlInterpreter);
105 =for apidoc perl_alloc
107 Allocates a new Perl interpreter. See L<perlembed>.
115 PerlInterpreter *my_perl;
117 /* New() needs interpreter, so call malloc() instead */
118 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
121 Zero(my_perl, 1, PerlInterpreter);
124 #endif /* PERL_IMPLICIT_SYS */
127 =for apidoc perl_construct
129 Initializes a new Perl interpreter. See L<perlembed>.
135 perl_construct(pTHXx)
137 #ifdef USE_5005THREADS
139 struct perl_thread *thr = NULL;
140 #endif /* FAKE_THREADS */
141 #endif /* USE_5005THREADS */
145 PL_perl_destruct_level = 1;
147 if (PL_perl_destruct_level > 0)
151 /* Init the real globals (and main thread)? */
153 #ifdef USE_5005THREADS
154 MUTEX_INIT(&PL_sv_mutex);
156 * Safe to use basic SV functions from now on (though
157 * not things like mortals or tainting yet).
159 MUTEX_INIT(&PL_eval_mutex);
160 COND_INIT(&PL_eval_cond);
161 MUTEX_INIT(&PL_threads_mutex);
162 COND_INIT(&PL_nthreads_cond);
163 # ifdef EMULATE_ATOMIC_REFCOUNTS
164 MUTEX_INIT(&PL_svref_mutex);
165 # endif /* EMULATE_ATOMIC_REFCOUNTS */
167 MUTEX_INIT(&PL_cred_mutex);
168 MUTEX_INIT(&PL_sv_lock_mutex);
169 MUTEX_INIT(&PL_fdpid_mutex);
171 thr = init_main_thread();
172 #endif /* USE_5005THREADS */
174 #ifdef PERL_FLEXIBLE_EXCEPTIONS
175 PL_protect = MEMBER_TO_FPTR(Perl_default_protect); /* for exceptions */
178 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
180 PL_linestr = NEWSV(65,79);
181 sv_upgrade(PL_linestr,SVt_PVIV);
183 if (!SvREADONLY(&PL_sv_undef)) {
184 /* set read-only and try to insure than we wont see REFCNT==0
187 SvREADONLY_on(&PL_sv_undef);
188 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
190 sv_setpv(&PL_sv_no,PL_No);
192 SvREADONLY_on(&PL_sv_no);
193 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
195 sv_setpv(&PL_sv_yes,PL_Yes);
197 SvREADONLY_on(&PL_sv_yes);
198 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
201 PL_sighandlerp = Perl_sighandler;
202 PL_pidstatus = newHV();
206 * There is no way we can refer to them from Perl so close them to save
207 * space. The other alternative would be to provide STDAUX and STDPRN
210 (void)PerlIO_close(PerlIO_importFILE(stdaux, 0));
211 (void)PerlIO_close(PerlIO_importFILE(stdprn, 0));
215 PL_nrs = newSVpvn("\n", 1);
216 PL_rs = SvREFCNT_inc(PL_nrs);
221 PL_lex_state = LEX_NOTPARSING;
227 SET_NUMERIC_STANDARD();
231 PL_patchlevel = NEWSV(0,4);
232 (void)SvUPGRADE(PL_patchlevel, SVt_PVNV);
233 if (PERL_REVISION > 127 || PERL_VERSION > 127 || PERL_SUBVERSION > 127)
234 SvGROW(PL_patchlevel, UTF8_MAXLEN*3+1);
235 s = (U8*)SvPVX(PL_patchlevel);
236 /* Build version strings using "native" characters */
237 s = uvchr_to_utf8(s, (UV)PERL_REVISION);
238 s = uvchr_to_utf8(s, (UV)PERL_VERSION);
239 s = uvchr_to_utf8(s, (UV)PERL_SUBVERSION);
241 SvCUR_set(PL_patchlevel, s - (U8*)SvPVX(PL_patchlevel));
242 SvPOK_on(PL_patchlevel);
243 SvNVX(PL_patchlevel) = (NV)PERL_REVISION
244 + ((NV)PERL_VERSION / (NV)1000)
245 #if defined(PERL_SUBVERSION) && PERL_SUBVERSION > 0
246 + ((NV)PERL_SUBVERSION / (NV)1000000)
249 SvNOK_on(PL_patchlevel); /* dual valued */
250 SvUTF8_on(PL_patchlevel);
251 SvREADONLY_on(PL_patchlevel);
254 #if defined(LOCAL_PATCH_COUNT)
255 PL_localpatches = local_patches; /* For possible -v */
258 #ifdef HAVE_INTERP_INTERN
262 PerlIO_init(); /* Hook to IO system */
264 PL_fdpid = newAV(); /* for remembering popen pids by fd */
265 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
266 PL_errors = newSVpvn("",0);
268 PL_regex_padav = newAV();
269 av_push(PL_regex_padav,(SV*)newAV()); /* First entry is an array of empty elements */
270 PL_regex_pad = AvARRAY(PL_regex_padav);
272 #ifdef USE_REENTRANT_API
273 New(31337, PL_reentrant_buffer,1, REBUF);
274 New(31337, PL_reentrant_buffer->tmbuff,1, struct tm);
280 =for apidoc perl_destruct
282 Shuts down a Perl interpreter. See L<perlembed>.
290 int destruct_level; /* 0=none, 1=full, 2=full with checks */
292 #ifdef USE_5005THREADS
295 #endif /* USE_5005THREADS */
297 /* wait for all pseudo-forked children to finish */
298 PERL_WAIT_FOR_CHILDREN;
300 #ifdef USE_5005THREADS
302 /* Pass 1 on any remaining threads: detach joinables, join zombies */
304 MUTEX_LOCK(&PL_threads_mutex);
305 DEBUG_S(PerlIO_printf(Perl_debug_log,
306 "perl_destruct: waiting for %d threads...\n",
308 for (t = thr->next; t != thr; t = t->next) {
309 MUTEX_LOCK(&t->mutex);
310 switch (ThrSTATE(t)) {
313 DEBUG_S(PerlIO_printf(Perl_debug_log,
314 "perl_destruct: joining zombie %p\n", t));
315 ThrSETSTATE(t, THRf_DEAD);
316 MUTEX_UNLOCK(&t->mutex);
319 * The SvREFCNT_dec below may take a long time (e.g. av
320 * may contain an object scalar whose destructor gets
321 * called) so we have to unlock threads_mutex and start
324 MUTEX_UNLOCK(&PL_threads_mutex);
326 SvREFCNT_dec((SV*)av);
327 DEBUG_S(PerlIO_printf(Perl_debug_log,
328 "perl_destruct: joined zombie %p OK\n", t));
330 case THRf_R_JOINABLE:
331 DEBUG_S(PerlIO_printf(Perl_debug_log,
332 "perl_destruct: detaching thread %p\n", t));
333 ThrSETSTATE(t, THRf_R_DETACHED);
335 * We unlock threads_mutex and t->mutex in the opposite order
336 * from which we locked them just so that DETACH won't
337 * deadlock if it panics. It's only a breach of good style
338 * not a bug since they are unlocks not locks.
340 MUTEX_UNLOCK(&PL_threads_mutex);
342 MUTEX_UNLOCK(&t->mutex);
345 DEBUG_S(PerlIO_printf(Perl_debug_log,
346 "perl_destruct: ignoring %p (state %u)\n",
348 MUTEX_UNLOCK(&t->mutex);
349 /* fall through and out */
352 /* We leave the above "Pass 1" loop with threads_mutex still locked */
354 /* Pass 2 on remaining threads: wait for the thread count to drop to one */
355 while (PL_nthreads > 1)
357 DEBUG_S(PerlIO_printf(Perl_debug_log,
358 "perl_destruct: final wait for %d threads\n",
360 COND_WAIT(&PL_nthreads_cond, &PL_threads_mutex);
362 /* At this point, we're the last thread */
363 MUTEX_UNLOCK(&PL_threads_mutex);
364 DEBUG_S(PerlIO_printf(Perl_debug_log, "perl_destruct: armageddon has arrived\n"));
365 MUTEX_DESTROY(&PL_threads_mutex);
366 COND_DESTROY(&PL_nthreads_cond);
368 #endif /* !defined(FAKE_THREADS) */
369 #endif /* USE_5005THREADS */
371 destruct_level = PL_perl_destruct_level;
375 if ((s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL"))) {
377 if (destruct_level < i)
384 if(PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
389 if (PL_endav && !PL_minus_c)
390 call_list(PL_scopestack_ix, PL_endav);
396 /* We must account for everything. */
398 /* Destroy the main CV and syntax tree */
400 PL_curpad = AvARRAY(PL_comppad);
401 op_free(PL_main_root);
402 PL_main_root = Nullop;
404 PL_curcop = &PL_compiling;
405 PL_main_start = Nullop;
406 SvREFCNT_dec(PL_main_cv);
410 /* Tell PerlIO we are about to tear things apart in case
411 we have layers which are using resources that should
415 PerlIO_destruct(aTHX);
417 if (PL_sv_objcount) {
419 * Try to destruct global references. We do this first so that the
420 * destructors and destructees still exist. Some sv's might remain.
421 * Non-referenced objects are on their own.
426 /* unhook hooks which will soon be, or use, destroyed data */
427 SvREFCNT_dec(PL_warnhook);
428 PL_warnhook = Nullsv;
429 SvREFCNT_dec(PL_diehook);
432 /* call exit list functions */
433 while (PL_exitlistlen-- > 0)
434 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
436 Safefree(PL_exitlist);
438 if (destruct_level == 0){
440 DEBUG_P(debprofdump());
442 /* The exit() function will do everything that needs doing. */
443 return STATUS_NATIVE_EXPORT;;
446 /* jettison our possibly duplicated environment */
448 #ifdef USE_ENVIRON_ARRAY
449 if (environ != PL_origenviron) {
452 for (i = 0; environ[i]; i++)
453 safesysfree(environ[i]);
454 /* Must use safesysfree() when working with environ. */
455 safesysfree(environ);
457 environ = PL_origenviron;
462 /* the syntax tree is shared between clones
463 * so op_free(PL_main_root) only ReREFCNT_dec's
464 * REGEXPs in the parent interpreter
465 * we need to manually ReREFCNT_dec for the clones
468 I32 i = AvFILLp(PL_regex_padav) + 1;
469 SV **ary = AvARRAY(PL_regex_padav);
473 REGEXP *re = (REGEXP *)SvIVX(resv);
475 if (SvFLAGS(resv) & SVf_BREAK) {
476 /* this is PL_reg_curpm, already freed
477 * flag is set in regexec.c:S_regtry
479 SvFLAGS(resv) &= ~SVf_BREAK;
481 else if(SvREPADTMP(resv)) {
482 SvREPADTMP_off(resv);
489 SvREFCNT_dec(PL_regex_padav);
490 PL_regex_padav = Nullav;
494 /* loosen bonds of global variables */
497 (void)PerlIO_close(PL_rsfp);
501 /* Filters for program text */
502 SvREFCNT_dec(PL_rsfp_filters);
503 PL_rsfp_filters = Nullav;
506 PL_preprocess = FALSE;
512 PL_doswitches = FALSE;
513 PL_dowarn = G_WARN_OFF;
514 PL_doextract = FALSE;
515 PL_sawampersand = FALSE; /* must save all match strings */
518 Safefree(PL_inplace);
520 SvREFCNT_dec(PL_patchlevel);
523 SvREFCNT_dec(PL_e_script);
524 PL_e_script = Nullsv;
527 while (--PL_origargc >= 0) {
528 Safefree(PL_origargv[PL_origargc]);
530 Safefree(PL_origargv);
532 /* magical thingies */
534 SvREFCNT_dec(PL_ofs_sv); /* $, */
537 SvREFCNT_dec(PL_ors_sv); /* $\ */
540 SvREFCNT_dec(PL_rs); /* $/ */
543 SvREFCNT_dec(PL_nrs); /* $/ helper */
546 PL_multiline = 0; /* $* */
547 Safefree(PL_osname); /* $^O */
550 SvREFCNT_dec(PL_statname);
551 PL_statname = Nullsv;
554 /* defgv, aka *_ should be taken care of elsewhere */
556 /* clean up after study() */
557 SvREFCNT_dec(PL_lastscream);
558 PL_lastscream = Nullsv;
559 Safefree(PL_screamfirst);
561 Safefree(PL_screamnext);
565 Safefree(PL_efloatbuf);
566 PL_efloatbuf = Nullch;
569 /* startup and shutdown function lists */
570 SvREFCNT_dec(PL_beginav);
571 SvREFCNT_dec(PL_endav);
572 SvREFCNT_dec(PL_checkav);
573 SvREFCNT_dec(PL_initav);
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_tolower);
643 PL_utf8_alnum = Nullsv;
644 PL_utf8_alnumc = Nullsv;
645 PL_utf8_ascii = Nullsv;
646 PL_utf8_alpha = Nullsv;
647 PL_utf8_space = Nullsv;
648 PL_utf8_cntrl = Nullsv;
649 PL_utf8_graph = Nullsv;
650 PL_utf8_digit = Nullsv;
651 PL_utf8_upper = Nullsv;
652 PL_utf8_lower = Nullsv;
653 PL_utf8_print = Nullsv;
654 PL_utf8_punct = Nullsv;
655 PL_utf8_xdigit = Nullsv;
656 PL_utf8_mark = Nullsv;
657 PL_utf8_toupper = Nullsv;
658 PL_utf8_totitle = Nullsv;
659 PL_utf8_tolower = Nullsv;
661 if (!specialWARN(PL_compiling.cop_warnings))
662 SvREFCNT_dec(PL_compiling.cop_warnings);
663 PL_compiling.cop_warnings = Nullsv;
664 if (!specialCopIO(PL_compiling.cop_io))
665 SvREFCNT_dec(PL_compiling.cop_io);
666 PL_compiling.cop_io = Nullsv;
668 Safefree(CopFILE(&PL_compiling));
669 CopFILE(&PL_compiling) = Nullch;
670 Safefree(CopSTASHPV(&PL_compiling));
672 SvREFCNT_dec(CopFILEGV(&PL_compiling));
673 CopFILEGV(&PL_compiling) = Nullgv;
674 /* cop_stash is not refcounted */
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_ 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_ 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_ 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_ 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_ 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;
776 SvREFCNT(&PL_sv_undef) = 0;
777 SvREADONLY_off(&PL_sv_undef);
779 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
780 Perl_warner(aTHX_ WARN_INTERNAL,"Scalars leaked: %ld\n", (long)PL_sv_count);
782 Safefree(PL_origfilename);
783 Safefree(PL_reg_start_tmp);
785 Safefree(PL_reg_curpm);
786 Safefree(PL_reg_poscache);
787 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
788 Safefree(PL_op_mask);
789 Safefree(PL_psig_ptr);
790 Safefree(PL_psig_name);
791 Safefree(PL_bitcount);
792 Safefree(PL_psig_pend);
794 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
796 DEBUG_P(debprofdump());
797 #ifdef USE_5005THREADS
798 MUTEX_DESTROY(&PL_strtab_mutex);
799 MUTEX_DESTROY(&PL_sv_mutex);
800 MUTEX_DESTROY(&PL_eval_mutex);
801 MUTEX_DESTROY(&PL_cred_mutex);
802 MUTEX_DESTROY(&PL_fdpid_mutex);
803 COND_DESTROY(&PL_eval_cond);
804 #ifdef EMULATE_ATOMIC_REFCOUNTS
805 MUTEX_DESTROY(&PL_svref_mutex);
806 #endif /* EMULATE_ATOMIC_REFCOUNTS */
808 /* As the penultimate thing, free the non-arena SV for thrsv */
809 Safefree(SvPVX(PL_thrsv));
810 Safefree(SvANY(PL_thrsv));
813 #endif /* USE_5005THREADS */
815 #ifdef USE_REENTRANT_API
816 Safefree(PL_reentrant_buffer->tmbuff);
817 Safefree(PL_reentrant_buffer);
822 /* As the absolutely last thing, free the non-arena SV for mess() */
825 /* it could have accumulated taint magic */
826 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
829 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
830 moremagic = mg->mg_moremagic;
831 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
833 Safefree(mg->mg_ptr);
837 /* we know that type >= SVt_PV */
838 (void)SvOOK_off(PL_mess_sv);
839 Safefree(SvPVX(PL_mess_sv));
840 Safefree(SvANY(PL_mess_sv));
841 Safefree(PL_mess_sv);
844 return STATUS_NATIVE_EXPORT;
848 =for apidoc perl_free
850 Releases a Perl interpreter. See L<perlembed>.
858 #if defined(WIN32) || defined(NETWARE)
859 # if defined(PERL_IMPLICIT_SYS)
861 void *host = nw_internal_host;
863 void *host = w32_internal_host;
866 if (PerlProc_lasthost()) {
872 nw5_delete_internal_host(host);
874 win32_delete_internal_host(host);
886 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
888 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
889 PL_exitlist[PL_exitlistlen].fn = fn;
890 PL_exitlist[PL_exitlistlen].ptr = ptr;
895 =for apidoc perl_parse
897 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
903 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
908 #ifdef USE_5005THREADS
912 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
915 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
916 setuid perl scripts securely.\n");
920 #if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
921 _dyld_lookup_and_bind
922 ("__environ", (unsigned long *) &environ_pointer, NULL);
927 /* we copy rather than point to argv
928 * since perl_clone will copy and perl_destruct
929 * has no way of knowing if we've made a copy or
933 New(0, PL_origargv, i+1, char*);
934 PL_origargv[i] = '\0';
936 PL_origargv[i] = savepv(argv[i]);
940 #ifdef USE_ENVIRON_ARRAY
941 PL_origenviron = environ;
946 /* Come here if running an undumped a.out. */
948 PL_origfilename = savepv(argv[0]);
949 PL_do_undump = FALSE;
950 cxstack_ix = -1; /* start label stack again */
952 init_postdump_symbols(argc,argv,env);
957 PL_curpad = AvARRAY(PL_comppad);
958 op_free(PL_main_root);
959 PL_main_root = Nullop;
961 PL_main_start = Nullop;
962 SvREFCNT_dec(PL_main_cv);
966 oldscope = PL_scopestack_ix;
967 PL_dowarn = G_WARN_OFF;
969 #ifdef PERL_FLEXIBLE_EXCEPTIONS
970 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
976 #ifndef PERL_FLEXIBLE_EXCEPTIONS
977 parse_body(env,xsinit);
980 call_list(oldscope, PL_checkav);
987 /* my_exit() was called */
988 while (PL_scopestack_ix > oldscope)
991 PL_curstash = PL_defstash;
993 call_list(oldscope, PL_checkav);
994 ret = STATUS_NATIVE_EXPORT;
997 PerlIO_printf(Perl_error_log, "panic: top_env\n");
1005 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1007 S_vparse_body(pTHX_ va_list args)
1009 char **env = va_arg(args, char**);
1010 XSINIT_t xsinit = va_arg(args, XSINIT_t);
1012 return parse_body(env, xsinit);
1017 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
1019 int argc = PL_origargc;
1020 char **argv = PL_origargv;
1021 char *scriptname = NULL;
1023 VOL bool dosearch = FALSE;
1024 char *validarg = "";
1028 char *cddir = Nullch;
1030 sv_setpvn(PL_linestr,"",0);
1031 sv = newSVpvn("",0); /* first used for -I flags */
1035 for (argc--,argv++; argc > 0; argc--,argv++) {
1036 if (argv[0][0] != '-' || !argv[0][1])
1040 validarg = " PHOOEY ";
1049 win32_argv2utf8(argc-1, argv+1);
1052 #ifndef PERL_STRICT_CR
1076 if ((s = moreswitches(s)))
1086 #ifdef MACOS_TRADITIONAL
1087 /* ignore -e for Dev:Pseudo argument */
1088 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
1091 if (PL_euid != PL_uid || PL_egid != PL_gid)
1092 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
1094 PL_e_script = newSVpvn("",0);
1095 filter_add(read_e_script, NULL);
1098 sv_catpv(PL_e_script, s);
1100 sv_catpv(PL_e_script, argv[1]);
1104 Perl_croak(aTHX_ "No code specified for -e");
1105 sv_catpv(PL_e_script, "\n");
1108 case 'I': /* -I handled both here and in moreswitches() */
1110 if (!*++s && (s=argv[1]) != Nullch) {
1115 STRLEN len = strlen(s);
1116 p = savepvn(s, len);
1117 incpush(p, TRUE, TRUE);
1118 sv_catpvn(sv, "-I", 2);
1119 sv_catpvn(sv, p, len);
1120 sv_catpvn(sv, " ", 1);
1124 Perl_croak(aTHX_ "No directory specified for -I");
1128 PL_preprocess = TRUE;
1138 PL_preambleav = newAV();
1139 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
1141 PL_Sv = newSVpv("print myconfig();",0);
1143 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
1145 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
1147 sv_catpv(PL_Sv,"\" Compile-time options:");
1149 sv_catpv(PL_Sv," DEBUGGING");
1151 # ifdef MULTIPLICITY
1152 sv_catpv(PL_Sv," MULTIPLICITY");
1154 # ifdef USE_5005THREADS
1155 sv_catpv(PL_Sv," USE_5005THREADS");
1157 # ifdef USE_ITHREADS
1158 sv_catpv(PL_Sv," USE_ITHREADS");
1160 # ifdef USE_64_BIT_INT
1161 sv_catpv(PL_Sv," USE_64_BIT_INT");
1163 # ifdef USE_64_BIT_ALL
1164 sv_catpv(PL_Sv," USE_64_BIT_ALL");
1166 # ifdef USE_LONG_DOUBLE
1167 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1169 # ifdef USE_LARGE_FILES
1170 sv_catpv(PL_Sv," USE_LARGE_FILES");
1173 sv_catpv(PL_Sv," USE_SOCKS");
1175 # ifdef PERL_IMPLICIT_CONTEXT
1176 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1178 # ifdef PERL_IMPLICIT_SYS
1179 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1181 sv_catpv(PL_Sv,"\\n\",");
1183 #if defined(LOCAL_PATCH_COUNT)
1184 if (LOCAL_PATCH_COUNT > 0) {
1186 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
1187 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1188 if (PL_localpatches[i])
1189 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
1193 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
1196 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
1198 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
1201 sv_catpv(PL_Sv, "; \
1203 @env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; ");
1206 push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
1209 print \" \\%ENV:\\n @env\\n\" if @env; \
1210 print \" \\@INC:\\n @INC\\n\";");
1213 PL_Sv = newSVpv("config_vars(qw(",0);
1214 sv_catpv(PL_Sv, ++s);
1215 sv_catpv(PL_Sv, "))");
1218 av_push(PL_preambleav, PL_Sv);
1219 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1222 PL_doextract = TRUE;
1230 if (!*++s || isSPACE(*s)) {
1234 /* catch use of gnu style long options */
1235 if (strEQ(s, "version")) {
1239 if (strEQ(s, "help")) {
1246 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1252 #ifndef SECURE_INTERNAL_GETENV
1255 (s = PerlEnv_getenv("PERL5OPT")))
1260 if (*s == '-' && *(s+1) == 'T')
1263 char *popt_copy = Nullch;
1276 if (!strchr("DIMUdmw", *s))
1277 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
1281 popt_copy = SvPVX(sv_2mortal(newSVpv(popt,0)));
1282 s = popt_copy + (s - popt);
1283 d = popt_copy + (d - popt);
1295 scriptname = argv[0];
1298 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1300 else if (scriptname == Nullch) {
1302 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1310 open_script(scriptname,dosearch,sv,&fdscript);
1312 validate_suid(validarg, scriptname,fdscript);
1315 #if defined(SIGCHLD) || defined(SIGCLD)
1318 # define SIGCHLD SIGCLD
1320 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1321 if (sigstate == SIG_IGN) {
1322 if (ckWARN(WARN_SIGNAL))
1323 Perl_warner(aTHX_ WARN_SIGNAL,
1324 "Can't ignore signal CHLD, forcing to default");
1325 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1331 #ifdef MACOS_TRADITIONAL
1332 if (PL_doextract || gMacPerl_AlwaysExtract) {
1337 if (cddir && PerlDir_chdir(cddir) < 0)
1338 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1342 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1343 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1344 CvUNIQUE_on(PL_compcv);
1346 PL_comppad = newAV();
1347 av_push(PL_comppad, Nullsv);
1348 PL_curpad = AvARRAY(PL_comppad);
1349 PL_comppad_name = newAV();
1350 PL_comppad_name_fill = 0;
1351 PL_min_intro_pending = 0;
1353 #ifdef USE_5005THREADS
1354 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
1355 PL_curpad[0] = (SV*)newAV();
1356 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1357 CvOWNER(PL_compcv) = 0;
1358 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1359 MUTEX_INIT(CvMUTEXP(PL_compcv));
1360 #endif /* USE_5005THREADS */
1362 comppadlist = newAV();
1363 AvREAL_off(comppadlist);
1364 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1365 av_store(comppadlist, 1, (SV*)PL_comppad);
1366 CvPADLIST(PL_compcv) = comppadlist;
1369 boot_core_UNIVERSAL();
1371 boot_core_xsutils();
1375 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
1377 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
1383 # ifdef HAS_SOCKS5_INIT
1384 socks5_init(argv[0]);
1390 init_predump_symbols();
1391 /* init_postdump_symbols not currently designed to be called */
1392 /* more than once (ENV isn't cleared first, for example) */
1393 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
1395 init_postdump_symbols(argc,argv,env);
1399 /* now parse the script */
1401 SETERRNO(0,SS$_NORMAL);
1403 #ifdef MACOS_TRADITIONAL
1404 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1406 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1408 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1409 MacPerl_MPWFileName(PL_origfilename));
1413 if (yyparse() || PL_error_count) {
1415 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
1417 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1422 CopLINE_set(PL_curcop, 0);
1423 PL_curstash = PL_defstash;
1424 PL_preprocess = FALSE;
1426 SvREFCNT_dec(PL_e_script);
1427 PL_e_script = Nullsv;
1430 /* now that script is parsed, we can modify record separator */
1431 SvREFCNT_dec(PL_rs);
1432 PL_rs = SvREFCNT_inc(PL_nrs);
1433 sv_setsv(get_sv("/", TRUE), PL_rs);
1438 SAVECOPFILE(PL_curcop);
1439 SAVECOPLINE(PL_curcop);
1440 gv_check(PL_defstash);
1447 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1448 dump_mstats("after compilation:");
1457 =for apidoc perl_run
1459 Tells a Perl interpreter to run. See L<perlembed>.
1470 #ifdef USE_5005THREADS
1474 oldscope = PL_scopestack_ix;
1476 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1478 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1484 cxstack_ix = -1; /* start context stack again */
1486 case 0: /* normal completion */
1487 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1492 case 2: /* my_exit() */
1493 while (PL_scopestack_ix > oldscope)
1496 PL_curstash = PL_defstash;
1497 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
1498 PL_endav && !PL_minus_c)
1499 call_list(oldscope, PL_endav);
1501 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1502 dump_mstats("after execution: ");
1504 ret = STATUS_NATIVE_EXPORT;
1508 POPSTACK_TO(PL_mainstack);
1511 PerlIO_printf(Perl_error_log, "panic: restartop\n");
1521 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1523 S_vrun_body(pTHX_ va_list args)
1525 I32 oldscope = va_arg(args, I32);
1527 return run_body(oldscope);
1533 S_run_body(pTHX_ I32 oldscope)
1535 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
1536 PL_sawampersand ? "Enabling" : "Omitting"));
1538 if (!PL_restartop) {
1539 DEBUG_x(dump_all());
1540 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
1541 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1545 #ifdef MACOS_TRADITIONAL
1546 PerlIO_printf(Perl_error_log, "%s syntax OK\n", MacPerl_MPWFileName(PL_origfilename));
1548 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
1552 if (PERLDB_SINGLE && PL_DBsingle)
1553 sv_setiv(PL_DBsingle, 1);
1555 call_list(oldscope, PL_initav);
1561 PL_op = PL_restartop;
1565 else if (PL_main_start) {
1566 CvDEPTH(PL_main_cv) = 1;
1567 PL_op = PL_main_start;
1577 =for apidoc p||get_sv
1579 Returns the SV of the specified Perl scalar. If C<create> is set and the
1580 Perl variable does not exist then it will be created. If C<create> is not
1581 set and the variable does not exist then NULL is returned.
1587 Perl_get_sv(pTHX_ const char *name, I32 create)
1590 #ifdef USE_5005THREADS
1591 if (name[1] == '\0' && !isALPHA(name[0])) {
1592 PADOFFSET tmp = find_threadsv(name);
1593 if (tmp != NOT_IN_PAD)
1594 return THREADSV(tmp);
1596 #endif /* USE_5005THREADS */
1597 gv = gv_fetchpv(name, create, SVt_PV);
1604 =for apidoc p||get_av
1606 Returns the AV of the specified Perl array. If C<create> is set and the
1607 Perl variable does not exist then it will be created. If C<create> is not
1608 set and the variable does not exist then NULL is returned.
1614 Perl_get_av(pTHX_ const char *name, I32 create)
1616 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1625 =for apidoc p||get_hv
1627 Returns the HV of the specified Perl hash. If C<create> is set and the
1628 Perl variable does not exist then it will be created. If C<create> is not
1629 set and the variable does not exist then NULL is returned.
1635 Perl_get_hv(pTHX_ const char *name, I32 create)
1637 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1646 =for apidoc p||get_cv
1648 Returns the CV of the specified Perl subroutine. If C<create> is set and
1649 the Perl subroutine does not exist then it will be declared (which has the
1650 same effect as saying C<sub name;>). If C<create> is not set and the
1651 subroutine does not exist then NULL is returned.
1657 Perl_get_cv(pTHX_ const char *name, I32 create)
1659 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
1660 /* XXX unsafe for threads if eval_owner isn't held */
1661 /* XXX this is probably not what they think they're getting.
1662 * It has the same effect as "sub name;", i.e. just a forward
1664 if (create && !GvCVu(gv))
1665 return newSUB(start_subparse(FALSE, 0),
1666 newSVOP(OP_CONST, 0, newSVpv(name,0)),
1674 /* Be sure to refetch the stack pointer after calling these routines. */
1677 =for apidoc p||call_argv
1679 Performs a callback to the specified Perl sub. See L<perlcall>.
1685 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
1687 /* See G_* flags in cop.h */
1688 /* null terminated arg list */
1695 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
1700 return call_pv(sub_name, flags);
1704 =for apidoc p||call_pv
1706 Performs a callback to the specified Perl sub. See L<perlcall>.
1712 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
1713 /* name of the subroutine */
1714 /* See G_* flags in cop.h */
1716 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
1720 =for apidoc p||call_method
1722 Performs a callback to the specified Perl method. The blessed object must
1723 be on the stack. See L<perlcall>.
1729 Perl_call_method(pTHX_ const char *methname, I32 flags)
1730 /* name of the subroutine */
1731 /* See G_* flags in cop.h */
1733 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
1736 /* May be called with any of a CV, a GV, or an SV containing the name. */
1738 =for apidoc p||call_sv
1740 Performs a callback to the Perl sub whose name is in the SV. See
1747 Perl_call_sv(pTHX_ SV *sv, I32 flags)
1748 /* See G_* flags in cop.h */
1751 LOGOP myop; /* fake syntax tree node */
1754 volatile I32 retval = 0;
1756 bool oldcatch = CATCH_GET;
1761 if (flags & G_DISCARD) {
1766 Zero(&myop, 1, LOGOP);
1767 myop.op_next = Nullop;
1768 if (!(flags & G_NOARGS))
1769 myop.op_flags |= OPf_STACKED;
1770 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1771 (flags & G_ARRAY) ? OPf_WANT_LIST :
1776 EXTEND(PL_stack_sp, 1);
1777 *++PL_stack_sp = sv;
1779 oldscope = PL_scopestack_ix;
1781 if (PERLDB_SUB && PL_curstash != PL_debstash
1782 /* Handle first BEGIN of -d. */
1783 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
1784 /* Try harder, since this may have been a sighandler, thus
1785 * curstash may be meaningless. */
1786 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
1787 && !(flags & G_NODEBUG))
1788 PL_op->op_private |= OPpENTERSUB_DB;
1790 if (flags & G_METHOD) {
1791 Zero(&method_op, 1, UNOP);
1792 method_op.op_next = PL_op;
1793 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1794 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
1795 PL_op = (OP*)&method_op;
1798 if (!(flags & G_EVAL)) {
1800 call_body((OP*)&myop, FALSE);
1801 retval = PL_stack_sp - (PL_stack_base + oldmark);
1802 CATCH_SET(oldcatch);
1805 myop.op_other = (OP*)&myop;
1807 /* we're trying to emulate pp_entertry() here */
1809 register PERL_CONTEXT *cx;
1810 I32 gimme = GIMME_V;
1815 push_return(Nullop);
1816 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
1818 PL_eval_root = PL_op; /* Only needed so that goto works right. */
1820 PL_in_eval = EVAL_INEVAL;
1821 if (flags & G_KEEPERR)
1822 PL_in_eval |= EVAL_KEEPERR;
1828 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1830 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1837 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1839 call_body((OP*)&myop, FALSE);
1841 retval = PL_stack_sp - (PL_stack_base + oldmark);
1842 if (!(flags & G_KEEPERR))
1849 /* my_exit() was called */
1850 PL_curstash = PL_defstash;
1853 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1854 Perl_croak(aTHX_ "Callback called exit");
1859 PL_op = PL_restartop;
1863 PL_stack_sp = PL_stack_base + oldmark;
1864 if (flags & G_ARRAY)
1868 *++PL_stack_sp = &PL_sv_undef;
1873 if (PL_scopestack_ix > oldscope) {
1877 register PERL_CONTEXT *cx;
1889 if (flags & G_DISCARD) {
1890 PL_stack_sp = PL_stack_base + oldmark;
1899 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1901 S_vcall_body(pTHX_ va_list args)
1903 OP *myop = va_arg(args, OP*);
1904 int is_eval = va_arg(args, int);
1906 call_body(myop, is_eval);
1912 S_call_body(pTHX_ OP *myop, int is_eval)
1914 if (PL_op == myop) {
1916 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
1918 PL_op = Perl_pp_entersub(aTHX); /* this does */
1924 /* Eval a string. The G_EVAL flag is always assumed. */
1927 =for apidoc p||eval_sv
1929 Tells Perl to C<eval> the string in the SV.
1935 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
1937 /* See G_* flags in cop.h */
1940 UNOP myop; /* fake syntax tree node */
1941 volatile I32 oldmark = SP - PL_stack_base;
1942 volatile I32 retval = 0;
1948 if (flags & G_DISCARD) {
1955 Zero(PL_op, 1, UNOP);
1956 EXTEND(PL_stack_sp, 1);
1957 *++PL_stack_sp = sv;
1958 oldscope = PL_scopestack_ix;
1960 if (!(flags & G_NOARGS))
1961 myop.op_flags = OPf_STACKED;
1962 myop.op_next = Nullop;
1963 myop.op_type = OP_ENTEREVAL;
1964 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1965 (flags & G_ARRAY) ? OPf_WANT_LIST :
1967 if (flags & G_KEEPERR)
1968 myop.op_flags |= OPf_SPECIAL;
1970 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1972 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1979 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1981 call_body((OP*)&myop,TRUE);
1983 retval = PL_stack_sp - (PL_stack_base + oldmark);
1984 if (!(flags & G_KEEPERR))
1991 /* my_exit() was called */
1992 PL_curstash = PL_defstash;
1995 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1996 Perl_croak(aTHX_ "Callback called exit");
2001 PL_op = PL_restartop;
2005 PL_stack_sp = PL_stack_base + oldmark;
2006 if (flags & G_ARRAY)
2010 *++PL_stack_sp = &PL_sv_undef;
2016 if (flags & G_DISCARD) {
2017 PL_stack_sp = PL_stack_base + oldmark;
2027 =for apidoc p||eval_pv
2029 Tells Perl to C<eval> the given string and return an SV* result.
2035 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
2038 SV* sv = newSVpv(p, 0);
2040 eval_sv(sv, G_SCALAR);
2047 if (croak_on_error && SvTRUE(ERRSV)) {
2049 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
2055 /* Require a module. */
2058 =for apidoc p||require_pv
2060 Tells Perl to C<require> the file named by the string argument. It is
2061 analogous to the Perl code C<eval "require '$file'">. It's even
2062 implemented that way; consider using Perl_load_module instead.
2067 Perl_require_pv(pTHX_ const char *pv)
2071 PUSHSTACKi(PERLSI_REQUIRE);
2073 sv = sv_newmortal();
2074 sv_setpv(sv, "require '");
2077 eval_sv(sv, G_DISCARD);
2083 Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
2087 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
2088 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
2092 S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
2094 /* This message really ought to be max 23 lines.
2095 * Removed -h because the user already knows that option. Others? */
2097 static char *usage_msg[] = {
2098 "-0[octal] specify record separator (\\0, if no argument)",
2099 "-a autosplit mode with -n or -p (splits $_ into @F)",
2100 "-C enable native wide character system interfaces",
2101 "-c check syntax only (runs BEGIN and CHECK blocks)",
2102 "-d[:debugger] run program under debugger",
2103 "-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2104 "-e 'command' one line of program (several -e's allowed, omit programfile)",
2105 "-F/pattern/ split() pattern for -a switch (//'s are optional)",
2106 "-i[extension] edit <> files in place (makes backup if extension supplied)",
2107 "-Idirectory specify @INC/#include directory (several -I's allowed)",
2108 "-l[octal] enable line ending processing, specifies line terminator",
2109 "-[mM][-]module execute `use/no module...' before executing program",
2110 "-n assume 'while (<>) { ... }' loop around program",
2111 "-p assume loop like -n but print line also, like sed",
2112 "-P run program through C preprocessor before compilation",
2113 "-s enable rudimentary parsing for switches after programfile",
2114 "-S look for programfile using PATH environment variable",
2115 "-T enable tainting checks",
2116 "-u dump core after parsing program",
2117 "-U allow unsafe operations",
2118 "-v print version, subversion (includes VERY IMPORTANT perl info)",
2119 "-V[:variable] print configuration summary (or a single Config.pm variable)",
2120 "-w enable many useful warnings (RECOMMENDED)",
2121 "-W enable all warnings",
2122 "-X disable all warnings",
2123 "-x[directory] strip off text before #!perl line and perhaps cd to directory",
2127 char **p = usage_msg;
2129 PerlIO_printf(PerlIO_stdout(),
2130 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2133 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
2136 /* This routine handles any switches that can be given during run */
2139 Perl_moreswitches(pTHX_ char *s)
2147 numlen = 0; /* disallow underscores */
2148 rschar = (U32)scan_oct(s, 4, &numlen);
2149 SvREFCNT_dec(PL_nrs);
2150 if (rschar & ~((U8)~0))
2151 PL_nrs = &PL_sv_undef;
2152 else if (!rschar && numlen >= 2)
2153 PL_nrs = newSVpvn("", 0);
2156 PL_nrs = newSVpvn(&ch, 1);
2161 PL_widesyscalls = TRUE;
2166 PL_splitstr = savepv(s + 1);
2180 /* The following permits -d:Mod to accepts arguments following an =
2181 in the fashion that -MSome::Mod does. */
2182 if (*s == ':' || *s == '=') {
2185 sv = newSVpv("use Devel::", 0);
2187 /* We now allow -d:Module=Foo,Bar */
2188 while(isALNUM(*s) || *s==':') ++s;
2190 sv_catpv(sv, start);
2192 sv_catpvn(sv, start, s-start);
2193 sv_catpv(sv, " split(/,/,q{");
2198 my_setenv("PERL5DB", SvPV(sv, PL_na));
2201 PL_perldb = PERLDB_ALL;
2209 if (isALPHA(s[1])) {
2210 /* if adding extra options, remember to update DEBUG_MASK */
2211 static char debopts[] = "psltocPmfrxuLHXDSTR";
2214 for (s++; *s && (d = strchr(debopts,*s)); s++)
2215 PL_debug |= 1 << (d - debopts);
2218 PL_debug = atoi(s+1);
2219 for (s++; isDIGIT(*s); s++) ;
2221 PL_debug |= DEBUG_TOP_FLAG;
2223 if (ckWARN_d(WARN_DEBUGGING))
2224 Perl_warner(aTHX_ WARN_DEBUGGING,
2225 "Recompile perl with -DDEBUGGING to use -D switch\n");
2226 for (s++; isALNUM(*s); s++) ;
2232 usage(PL_origargv[0]);
2236 Safefree(PL_inplace);
2237 PL_inplace = savepv(s+1);
2239 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
2242 if (*s == '-') /* Additional switches on #! line. */
2246 case 'I': /* -I handled both here and in parse_perl() */
2249 while (*s && isSPACE(*s))
2254 /* ignore trailing spaces (possibly followed by other switches) */
2256 for (e = p; *e && !isSPACE(*e); e++) ;
2260 } while (*p && *p != '-');
2261 e = savepvn(s, e-s);
2262 incpush(e, TRUE, TRUE);
2269 Perl_croak(aTHX_ "No directory specified for -I");
2275 SvREFCNT_dec(PL_ors_sv);
2279 PL_ors_sv = newSVpvn("\n",1);
2280 numlen = 0; /* disallow underscores */
2281 *SvPVX(PL_ors_sv) = (char)scan_oct(s, 3 + (*s == '0'), &numlen);
2285 if (RsPARA(PL_nrs)) {
2286 PL_ors_sv = newSVpvn("\n\n",2);
2289 PL_ors_sv = newSVsv(PL_nrs);
2294 forbid_setid("-M"); /* XXX ? */
2297 forbid_setid("-m"); /* XXX ? */
2302 /* -M-foo == 'no foo' */
2303 if (*s == '-') { use = "no "; ++s; }
2304 sv = newSVpv(use,0);
2306 /* We allow -M'Module qw(Foo Bar)' */
2307 while(isALNUM(*s) || *s==':') ++s;
2309 sv_catpv(sv, start);
2310 if (*(start-1) == 'm') {
2312 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
2313 sv_catpv( sv, " ()");
2317 Perl_croak(aTHX_ "Module name required with -%c option",
2319 sv_catpvn(sv, start, s-start);
2320 sv_catpv(sv, " split(/,/,q{");
2326 PL_preambleav = newAV();
2327 av_push(PL_preambleav, sv);
2330 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
2342 PL_doswitches = TRUE;
2347 Perl_croak(aTHX_ "Too late for \"-T\" option");
2351 #ifdef MACOS_TRADITIONAL
2352 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2354 PL_do_undump = TRUE;
2363 PerlIO_printf(PerlIO_stdout(),
2364 Perl_form(aTHX_ "\nThis is perl, v%"VDf" built for %s",
2365 PL_patchlevel, ARCHNAME));
2367 /* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
2368 PerlIO_printf(PerlIO_stdout(),
2369 Perl_form(aTHX_ "\nThis is perl, version %vd\n", PL_patchlevel));
2370 PerlIO_printf(PerlIO_stdout(),
2371 Perl_form(aTHX_ " built under %s at %s %s\n",
2372 OSNAME, __DATE__, __TIME__));
2373 PerlIO_printf(PerlIO_stdout(),
2374 Perl_form(aTHX_ " OS Specific Release: %s\n",
2378 #if defined(LOCAL_PATCH_COUNT)
2379 if (LOCAL_PATCH_COUNT > 0)
2380 PerlIO_printf(PerlIO_stdout(),
2381 "\n(with %d registered patch%s, "
2382 "see perl -V for more detail)",
2383 (int)LOCAL_PATCH_COUNT,
2384 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
2387 PerlIO_printf(PerlIO_stdout(),
2388 "\n\nCopyright 1987-2001, Larry Wall\n");
2389 #ifdef MACOS_TRADITIONAL
2390 PerlIO_printf(PerlIO_stdout(),
2391 "\nMac OS port Copyright (c) 1991-2001, Matthias Neeracher\n");
2394 PerlIO_printf(PerlIO_stdout(),
2395 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
2398 PerlIO_printf(PerlIO_stdout(),
2399 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2400 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
2403 PerlIO_printf(PerlIO_stdout(),
2404 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2405 "Version 5 port Copyright (c) 1994-1999, Andreas Kaiser, Ilya Zakharevich\n");
2408 PerlIO_printf(PerlIO_stdout(),
2409 "atariST series port, ++jrb bammi@cadence.com\n");
2412 PerlIO_printf(PerlIO_stdout(),
2413 "BeOS port Copyright Tom Spindler, 1997-1999\n");
2416 PerlIO_printf(PerlIO_stdout(),
2417 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2001\n");
2420 PerlIO_printf(PerlIO_stdout(),
2421 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
2424 PerlIO_printf(PerlIO_stdout(),
2425 "Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n");
2428 PerlIO_printf(PerlIO_stdout(),
2429 "VM/ESA port by Neale Ferguson, 1998-1999\n");
2432 PerlIO_printf(PerlIO_stdout(),
2433 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
2436 PerlIO_printf(PerlIO_stdout(),
2437 "MiNT port by Guido Flohr, 1997-1999\n");
2440 PerlIO_printf(PerlIO_stdout(),
2441 "EPOC port by Olaf Flebbe, 1999-2000\n");
2444 printf("WINCE port by Rainer Keuchel, 2001\n");
2445 printf("Built on " __DATE__ " " __TIME__ "\n\n");
2448 #ifdef BINARY_BUILD_NOTICE
2449 BINARY_BUILD_NOTICE;
2451 PerlIO_printf(PerlIO_stdout(),
2453 Perl may be copied only under the terms of either the Artistic License or the\n\
2454 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
2455 Complete documentation for Perl, including FAQ lists, should be found on\n\
2456 this system using `man perl' or `perldoc perl'. If you have access to the\n\
2457 Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
2460 if (! (PL_dowarn & G_WARN_ALL_MASK))
2461 PL_dowarn |= G_WARN_ON;
2465 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
2466 PL_compiling.cop_warnings = pWARN_ALL ;
2470 PL_dowarn = G_WARN_ALL_OFF;
2471 PL_compiling.cop_warnings = pWARN_NONE ;
2476 if (s[1] == '-') /* Additional switches on #! line. */
2481 #if defined(WIN32) || !defined(PERL_STRICT_CR)
2487 #ifdef ALTERNATE_SHEBANG
2488 case 'S': /* OS/2 needs -S on "extproc" line. */
2496 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
2501 /* compliments of Tom Christiansen */
2503 /* unexec() can be found in the Gnu emacs distribution */
2504 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
2507 Perl_my_unexec(pTHX)
2515 prog = newSVpv(BIN_EXP, 0);
2516 sv_catpv(prog, "/perl");
2517 file = newSVpv(PL_origfilename, 0);
2518 sv_catpv(file, ".perldump");
2520 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2521 /* unexec prints msg to stderr in case of failure */
2522 PerlProc_exit(status);
2525 # include <lib$routines.h>
2526 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
2528 ABORT(); /* for use with undump */
2533 /* initialize curinterp */
2539 # define PERLVAR(var,type)
2540 # define PERLVARA(var,n,type)
2541 # if defined(PERL_IMPLICIT_CONTEXT)
2542 # if defined(USE_5005THREADS)
2543 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2544 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2545 # else /* !USE_5005THREADS */
2546 # define PERLVARI(var,type,init) aTHX->var = init;
2547 # define PERLVARIC(var,type,init) aTHX->var = init;
2548 # endif /* USE_5005THREADS */
2550 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2551 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2553 # include "intrpvar.h"
2554 # ifndef USE_5005THREADS
2555 # include "thrdvar.h"
2562 # define PERLVAR(var,type)
2563 # define PERLVARA(var,n,type)
2564 # define PERLVARI(var,type,init) PL_##var = init;
2565 # define PERLVARIC(var,type,init) PL_##var = init;
2566 # include "intrpvar.h"
2567 # ifndef USE_5005THREADS
2568 # include "thrdvar.h"
2579 S_init_main_stash(pTHX)
2583 /* Note that strtab is a rather special HV. Assumptions are made
2584 about not iterating on it, and not adding tie magic to it.
2585 It is properly deallocated in perl_destruct() */
2586 PL_strtab = newHV();
2587 #ifdef USE_5005THREADS
2588 MUTEX_INIT(&PL_strtab_mutex);
2590 HvSHAREKEYS_off(PL_strtab); /* mandatory */
2591 hv_ksplit(PL_strtab, 512);
2593 PL_curstash = PL_defstash = newHV();
2594 PL_curstname = newSVpvn("main",4);
2595 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2596 SvREFCNT_dec(GvHV(gv));
2597 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
2599 HvNAME(PL_defstash) = savepv("main");
2600 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2601 GvMULTI_on(PL_incgv);
2602 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2603 GvMULTI_on(PL_hintgv);
2604 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2605 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2606 GvMULTI_on(PL_errgv);
2607 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2608 GvMULTI_on(PL_replgv);
2609 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
2610 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2611 sv_setpvn(ERRSV, "", 0);
2612 PL_curstash = PL_defstash;
2613 CopSTASH_set(&PL_compiling, PL_defstash);
2614 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
2615 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
2616 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
2617 /* We must init $/ before switches are processed. */
2618 sv_setpvn(get_sv("/", TRUE), "\n", 1);
2622 S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
2627 PL_origfilename = savepv("-e");
2630 /* if find_script() returns, it returns a malloc()-ed value */
2631 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
2633 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2634 char *s = scriptname + 8;
2635 *fdscript = atoi(s);
2639 scriptname = savepv(s + 1);
2640 Safefree(PL_origfilename);
2641 PL_origfilename = scriptname;
2647 Safefree(CopFILE(PL_curcop));
2649 SvREFCNT_dec(CopFILEGV(PL_curcop));
2651 CopFILE_set(PL_curcop, PL_origfilename);
2652 if (strEQ(PL_origfilename,"-"))
2654 if (*fdscript >= 0) {
2655 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
2656 #if defined(HAS_FCNTL) && defined(F_SETFD)
2658 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2661 else if (PL_preprocess) {
2662 char *cpp_cfg = CPPSTDIN;
2663 SV *cpp = newSVpvn("",0);
2664 SV *cmd = NEWSV(0,0);
2666 if (strEQ(cpp_cfg, "cppstdin"))
2667 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
2668 sv_catpv(cpp, cpp_cfg);
2670 sv_catpvn(sv, "-I", 2);
2671 sv_catpv(sv,PRIVLIB_EXP);
2673 DEBUG_P(PerlIO_printf(Perl_debug_log,
2674 "PL_preprocess: scriptname=\"%s\", cpp=\"%s\", sv=\"%s\", CPPMINUS=\"%s\"\n",
2675 scriptname, SvPVX (cpp), SvPVX (sv), CPPMINUS));
2676 #if defined(MSDOS) || defined(WIN32)
2677 Perl_sv_setpvf(aTHX_ cmd, "\
2678 sed %s -e \"/^[^#]/b\" \
2679 -e \"/^#[ ]*include[ ]/b\" \
2680 -e \"/^#[ ]*define[ ]/b\" \
2681 -e \"/^#[ ]*if[ ]/b\" \
2682 -e \"/^#[ ]*ifdef[ ]/b\" \
2683 -e \"/^#[ ]*ifndef[ ]/b\" \
2684 -e \"/^#[ ]*else/b\" \
2685 -e \"/^#[ ]*elif[ ]/b\" \
2686 -e \"/^#[ ]*undef[ ]/b\" \
2687 -e \"/^#[ ]*endif/b\" \
2689 %s | %"SVf" -C %"SVf" %s",
2690 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
2693 Perl_sv_setpvf(aTHX_ cmd, "\
2694 %s %s -e '/^[^#]/b' \
2695 -e '/^#[ ]*include[ ]/b' \
2696 -e '/^#[ ]*define[ ]/b' \
2697 -e '/^#[ ]*if[ ]/b' \
2698 -e '/^#[ ]*ifdef[ ]/b' \
2699 -e '/^#[ ]*ifndef[ ]/b' \
2700 -e '/^#[ ]*else/b' \
2701 -e '/^#[ ]*elif[ ]/b' \
2702 -e '/^#[ ]*undef[ ]/b' \
2703 -e '/^#[ ]*endif/b' \
2705 %s | %"SVf" %"SVf" %s",
2707 Perl_sv_setpvf(aTHX_ cmd, "\
2708 %s %s -e '/^[^#]/b' \
2709 -e '/^#[ ]*include[ ]/b' \
2710 -e '/^#[ ]*define[ ]/b' \
2711 -e '/^#[ ]*if[ ]/b' \
2712 -e '/^#[ ]*ifdef[ ]/b' \
2713 -e '/^#[ ]*ifndef[ ]/b' \
2714 -e '/^#[ ]*else/b' \
2715 -e '/^#[ ]*elif[ ]/b' \
2716 -e '/^#[ ]*undef[ ]/b' \
2717 -e '/^#[ ]*endif/b' \
2719 %s | %"SVf" -C %"SVf" %s",
2726 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
2728 scriptname, cpp, sv, CPPMINUS);
2729 PL_doextract = FALSE;
2730 #ifdef IAMSUID /* actually, this is caught earlier */
2731 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
2733 (void)seteuid(PL_uid); /* musn't stay setuid root */
2736 (void)setreuid((Uid_t)-1, PL_uid);
2738 #ifdef HAS_SETRESUID
2739 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
2741 PerlProc_setuid(PL_uid);
2745 if (PerlProc_geteuid() != PL_uid)
2746 Perl_croak(aTHX_ "Can't do seteuid!\n");
2748 #endif /* IAMSUID */
2749 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
2753 else if (!*scriptname) {
2754 forbid_setid("program input from stdin");
2755 PL_rsfp = PerlIO_stdin();
2758 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
2759 #if defined(HAS_FCNTL) && defined(F_SETFD)
2761 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2766 #ifndef IAMSUID /* in case script is not readable before setuid */
2768 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
2769 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2772 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
2773 (int)PERL_REVISION, (int)PERL_VERSION,
2774 (int)PERL_SUBVERSION), PL_origargv);
2775 Perl_croak(aTHX_ "Can't do setuid\n");
2781 Perl_croak(aTHX_ "Can't open perl script: %s\n",
2784 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
2785 CopFILE(PL_curcop), Strerror(errno));
2791 * I_SYSSTATVFS HAS_FSTATVFS
2793 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
2794 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2795 * here so that metaconfig picks them up. */
2799 S_fd_on_nosuid_fs(pTHX_ int fd)
2801 int check_okay = 0; /* able to do all the required sys/libcalls */
2802 int on_nosuid = 0; /* the fd is on a nosuid fs */
2804 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
2805 * fstatvfs() is UNIX98.
2806 * fstatfs() is 4.3 BSD.
2807 * ustat()+getmnt() is pre-4.3 BSD.
2808 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2809 * an irrelevant filesystem while trying to reach the right one.
2812 #undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2814 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2815 defined(HAS_FSTATVFS)
2816 # define FD_ON_NOSUID_CHECK_OKAY
2817 struct statvfs stfs;
2819 check_okay = fstatvfs(fd, &stfs) == 0;
2820 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
2821 # endif /* fstatvfs */
2823 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2824 defined(PERL_MOUNT_NOSUID) && \
2825 defined(HAS_FSTATFS) && \
2826 defined(HAS_STRUCT_STATFS) && \
2827 defined(HAS_STRUCT_STATFS_F_FLAGS)
2828 # define FD_ON_NOSUID_CHECK_OKAY
2831 check_okay = fstatfs(fd, &stfs) == 0;
2832 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
2833 # endif /* fstatfs */
2835 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2836 defined(PERL_MOUNT_NOSUID) && \
2837 defined(HAS_FSTAT) && \
2838 defined(HAS_USTAT) && \
2839 defined(HAS_GETMNT) && \
2840 defined(HAS_STRUCT_FS_DATA) && \
2842 # define FD_ON_NOSUID_CHECK_OKAY
2845 if (fstat(fd, &fdst) == 0) {
2847 if (ustat(fdst.st_dev, &us) == 0) {
2849 /* NOSTAT_ONE here because we're not examining fields which
2850 * vary between that case and STAT_ONE. */
2851 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
2852 size_t cmplen = sizeof(us.f_fname);
2853 if (sizeof(fsd.fd_req.path) < cmplen)
2854 cmplen = sizeof(fsd.fd_req.path);
2855 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2856 fdst.st_dev == fsd.fd_req.dev) {
2858 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2864 # endif /* fstat+ustat+getmnt */
2866 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2867 defined(HAS_GETMNTENT) && \
2868 defined(HAS_HASMNTOPT) && \
2869 defined(MNTOPT_NOSUID)
2870 # define FD_ON_NOSUID_CHECK_OKAY
2871 FILE *mtab = fopen("/etc/mtab", "r");
2872 struct mntent *entry;
2873 struct stat stb, fsb;
2875 if (mtab && (fstat(fd, &stb) == 0)) {
2876 while (entry = getmntent(mtab)) {
2877 if (stat(entry->mnt_dir, &fsb) == 0
2878 && fsb.st_dev == stb.st_dev)
2880 /* found the filesystem */
2882 if (hasmntopt(entry, MNTOPT_NOSUID))
2885 } /* A single fs may well fail its stat(). */
2890 # endif /* getmntent+hasmntopt */
2893 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
2896 #endif /* IAMSUID */
2899 S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
2905 /* do we need to emulate setuid on scripts? */
2907 /* This code is for those BSD systems that have setuid #! scripts disabled
2908 * in the kernel because of a security problem. Merely defining DOSUID
2909 * in perl will not fix that problem, but if you have disabled setuid
2910 * scripts in the kernel, this will attempt to emulate setuid and setgid
2911 * on scripts that have those now-otherwise-useless bits set. The setuid
2912 * root version must be called suidperl or sperlN.NNN. If regular perl
2913 * discovers that it has opened a setuid script, it calls suidperl with
2914 * the same argv that it had. If suidperl finds that the script it has
2915 * just opened is NOT setuid root, it sets the effective uid back to the
2916 * uid. We don't just make perl setuid root because that loses the
2917 * effective uid we had before invoking perl, if it was different from the
2920 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2921 * be defined in suidperl only. suidperl must be setuid root. The
2922 * Configure script will set this up for you if you want it.
2928 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
2929 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
2930 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
2935 #ifndef HAS_SETREUID
2936 /* On this access check to make sure the directories are readable,
2937 * there is actually a small window that the user could use to make
2938 * filename point to an accessible directory. So there is a faint
2939 * chance that someone could execute a setuid script down in a
2940 * non-accessible directory. I don't know what to do about that.
2941 * But I don't think it's too important. The manual lies when
2942 * it says access() is useful in setuid programs.
2944 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
2945 Perl_croak(aTHX_ "Permission denied");
2947 /* If we can swap euid and uid, then we can determine access rights
2948 * with a simple stat of the file, and then compare device and
2949 * inode to make sure we did stat() on the same file we opened.
2950 * Then we just have to make sure he or she can execute it.
2953 struct stat tmpstatbuf;
2957 setreuid(PL_euid,PL_uid) < 0
2960 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
2963 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
2964 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
2965 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
2966 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
2967 #if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
2968 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
2969 Perl_croak(aTHX_ "Permission denied");
2971 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
2972 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
2973 (void)PerlIO_close(PL_rsfp);
2974 Perl_croak(aTHX_ "Permission denied\n");
2978 setreuid(PL_uid,PL_euid) < 0
2980 # if defined(HAS_SETRESUID)
2981 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
2984 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
2985 Perl_croak(aTHX_ "Can't reswap uid and euid");
2986 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
2987 Perl_croak(aTHX_ "Permission denied\n");
2989 #endif /* HAS_SETREUID */
2990 #endif /* IAMSUID */
2992 if (!S_ISREG(PL_statbuf.st_mode))
2993 Perl_croak(aTHX_ "Permission denied");
2994 if (PL_statbuf.st_mode & S_IWOTH)
2995 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
2996 PL_doswitches = FALSE; /* -s is insecure in suid */
2997 CopLINE_inc(PL_curcop);
2998 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
2999 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
3000 Perl_croak(aTHX_ "No #! line");
3001 s = SvPV(PL_linestr,n_a)+2;
3003 while (!isSPACE(*s)) s++;
3004 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
3005 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
3006 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
3007 Perl_croak(aTHX_ "Not a perl script");
3008 while (*s == ' ' || *s == '\t') s++;
3010 * #! arg must be what we saw above. They can invoke it by
3011 * mentioning suidperl explicitly, but they may not add any strange
3012 * arguments beyond what #! says if they do invoke suidperl that way.
3014 len = strlen(validarg);
3015 if (strEQ(validarg," PHOOEY ") ||
3016 strnNE(s,validarg,len) || !isSPACE(s[len]))
3017 Perl_croak(aTHX_ "Args must match #! line");
3020 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
3021 PL_euid == PL_statbuf.st_uid)
3023 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3024 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3025 #endif /* IAMSUID */
3027 if (PL_euid) { /* oops, we're not the setuid root perl */
3028 (void)PerlIO_close(PL_rsfp);
3031 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
3032 (int)PERL_REVISION, (int)PERL_VERSION,
3033 (int)PERL_SUBVERSION), PL_origargv);
3035 Perl_croak(aTHX_ "Can't do setuid\n");
3038 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
3040 (void)setegid(PL_statbuf.st_gid);
3043 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
3045 #ifdef HAS_SETRESGID
3046 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
3048 PerlProc_setgid(PL_statbuf.st_gid);
3052 if (PerlProc_getegid() != PL_statbuf.st_gid)
3053 Perl_croak(aTHX_ "Can't do setegid!\n");
3055 if (PL_statbuf.st_mode & S_ISUID) {
3056 if (PL_statbuf.st_uid != PL_euid)
3058 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
3061 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
3063 #ifdef HAS_SETRESUID
3064 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
3066 PerlProc_setuid(PL_statbuf.st_uid);
3070 if (PerlProc_geteuid() != PL_statbuf.st_uid)
3071 Perl_croak(aTHX_ "Can't do seteuid!\n");
3073 else if (PL_uid) { /* oops, mustn't run as root */
3075 (void)seteuid((Uid_t)PL_uid);
3078 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
3080 #ifdef HAS_SETRESUID
3081 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
3083 PerlProc_setuid((Uid_t)PL_uid);
3087 if (PerlProc_geteuid() != PL_uid)
3088 Perl_croak(aTHX_ "Can't do seteuid!\n");
3091 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
3092 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
3095 else if (PL_preprocess)
3096 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
3097 else if (fdscript >= 0)
3098 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
3100 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
3102 /* We absolutely must clear out any saved ids here, so we */
3103 /* exec the real perl, substituting fd script for scriptname. */
3104 /* (We pass script name as "subdir" of fd, which perl will grok.) */
3105 PerlIO_rewind(PL_rsfp);
3106 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
3107 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3108 if (!PL_origargv[which])
3109 Perl_croak(aTHX_ "Permission denied");
3110 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
3111 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
3112 #if defined(HAS_FCNTL) && defined(F_SETFD)
3113 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
3115 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
3116 (int)PERL_REVISION, (int)PERL_VERSION,
3117 (int)PERL_SUBVERSION), PL_origargv);/* try again */
3118 Perl_croak(aTHX_ "Can't do setuid\n");
3119 #endif /* IAMSUID */
3121 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
3122 #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
3123 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3124 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3126 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3129 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3130 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3131 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3132 /* not set-id, must be wrapped */
3138 S_find_beginning(pTHX)
3140 register char *s, *s2;
3142 /* skip forward in input to the real script? */
3145 #ifdef MACOS_TRADITIONAL
3146 /* Since the Mac OS does not honor #! arguments for us, we do it ourselves */
3148 while (PL_doextract || gMacPerl_AlwaysExtract) {
3149 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3150 if (!gMacPerl_AlwaysExtract)
3151 Perl_croak(aTHX_ "No Perl script found in input\n");
3153 if (PL_doextract) /* require explicit override ? */
3154 if (!OverrideExtract(PL_origfilename))
3155 Perl_croak(aTHX_ "User aborted script\n");
3157 PL_doextract = FALSE;
3159 /* Pater peccavi, file does not have #! */
3160 PerlIO_rewind(PL_rsfp);
3165 while (PL_doextract) {
3166 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
3167 Perl_croak(aTHX_ "No Perl script found in input\n");
3170 if (*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))) {
3171 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3172 PL_doextract = FALSE;
3173 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3175 while (*s == ' ' || *s == '\t') s++;
3177 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3178 if (strnEQ(s2-4,"perl",4))
3180 while ((s = moreswitches(s)))
3183 #ifdef MACOS_TRADITIONAL
3194 PL_uid = PerlProc_getuid();
3195 PL_euid = PerlProc_geteuid();
3196 PL_gid = PerlProc_getgid();
3197 PL_egid = PerlProc_getegid();
3199 PL_uid |= PL_gid << 16;
3200 PL_euid |= PL_egid << 16;
3202 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3206 S_forbid_setid(pTHX_ char *s)
3208 if (PL_euid != PL_uid)
3209 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3210 if (PL_egid != PL_gid)
3211 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
3215 Perl_init_debugger(pTHX)
3217 HV *ostash = PL_curstash;
3219 PL_curstash = PL_debstash;
3220 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3221 AvREAL_off(PL_dbargs);
3222 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3223 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3224 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
3225 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3226 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
3227 sv_setiv(PL_DBsingle, 0);
3228 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
3229 sv_setiv(PL_DBtrace, 0);
3230 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
3231 sv_setiv(PL_DBsignal, 0);
3232 PL_curstash = ostash;
3235 #ifndef STRESS_REALLOC
3236 #define REASONABLE(size) (size)
3238 #define REASONABLE(size) (1) /* unreasonable */
3242 Perl_init_stacks(pTHX)
3244 /* start with 128-item stack and 8K cxstack */
3245 PL_curstackinfo = new_stackinfo(REASONABLE(128),
3246 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3247 PL_curstackinfo->si_type = PERLSI_MAIN;
3248 PL_curstack = PL_curstackinfo->si_stack;
3249 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
3251 PL_stack_base = AvARRAY(PL_curstack);
3252 PL_stack_sp = PL_stack_base;
3253 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
3255 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3258 PL_tmps_max = REASONABLE(128);
3260 New(54,PL_markstack,REASONABLE(32),I32);
3261 PL_markstack_ptr = PL_markstack;
3262 PL_markstack_max = PL_markstack + REASONABLE(32);
3266 New(54,PL_scopestack,REASONABLE(32),I32);
3267 PL_scopestack_ix = 0;
3268 PL_scopestack_max = REASONABLE(32);
3270 New(54,PL_savestack,REASONABLE(128),ANY);
3271 PL_savestack_ix = 0;
3272 PL_savestack_max = REASONABLE(128);
3274 New(54,PL_retstack,REASONABLE(16),OP*);
3276 PL_retstack_max = REASONABLE(16);
3284 while (PL_curstackinfo->si_next)
3285 PL_curstackinfo = PL_curstackinfo->si_next;
3286 while (PL_curstackinfo) {
3287 PERL_SI *p = PL_curstackinfo->si_prev;
3288 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3289 Safefree(PL_curstackinfo->si_cxstack);
3290 Safefree(PL_curstackinfo);
3291 PL_curstackinfo = p;
3293 Safefree(PL_tmps_stack);
3294 Safefree(PL_markstack);
3295 Safefree(PL_scopestack);
3296 Safefree(PL_savestack);
3297 Safefree(PL_retstack);
3301 static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */
3312 lex_start(PL_linestr);
3314 PL_subname = newSVpvn("main",4);
3318 S_init_predump_symbols(pTHX)
3323 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3324 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3325 GvMULTI_on(PL_stdingv);
3326 io = GvIOp(PL_stdingv);
3327 IoTYPE(io) = IoTYPE_RDONLY;
3328 IoIFP(io) = PerlIO_stdin();
3329 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
3331 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3333 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
3336 IoTYPE(io) = IoTYPE_WRONLY;
3337 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
3339 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
3341 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3343 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3344 GvMULTI_on(PL_stderrgv);
3345 io = GvIOp(PL_stderrgv);
3346 IoTYPE(io) = IoTYPE_WRONLY;
3347 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
3348 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
3350 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3352 PL_statname = NEWSV(66,0); /* last filename we did stat on */
3355 Safefree(PL_osname);
3356 PL_osname = savepv(OSNAME);
3360 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
3365 #ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3366 char **dup_env_base = 0;
3367 int dup_env_count = 0;
3370 argc--,argv++; /* skip name of script */
3371 if (PL_doswitches) {
3372 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3375 if (argv[0][1] == '-' && !argv[0][2]) {
3379 if ((s = strchr(argv[0], '='))) {
3381 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
3384 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
3387 PL_toptarget = NEWSV(0,0);
3388 sv_upgrade(PL_toptarget, SVt_PVFM);
3389 sv_setpvn(PL_toptarget, "", 0);
3390 PL_bodytarget = NEWSV(0,0);
3391 sv_upgrade(PL_bodytarget, SVt_PVFM);
3392 sv_setpvn(PL_bodytarget, "", 0);
3393 PL_formtarget = PL_bodytarget;
3396 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
3397 #ifdef MACOS_TRADITIONAL
3398 /* $0 is not majick on a Mac */
3399 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3401 sv_setpv(GvSV(tmpgv),PL_origfilename);
3402 magicname("0", "0", 1);
3405 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV)))
3407 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
3409 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
3411 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3412 GvMULTI_on(PL_argvgv);
3413 (void)gv_AVadd(PL_argvgv);
3414 av_clear(GvAVn(PL_argvgv));
3415 for (; argc > 0; argc--,argv++) {
3416 SV *sv = newSVpv(argv[0],0);
3417 av_push(GvAVn(PL_argvgv),sv);
3418 if (PL_widesyscalls)
3419 (void)sv_utf8_decode(sv);
3422 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
3424 GvMULTI_on(PL_envgv);
3425 hv = GvHVn(PL_envgv);
3426 hv_magic(hv, Nullgv, PERL_MAGIC_env);
3427 #ifdef USE_ENVIRON_ARRAY
3428 /* Note that if the supplied env parameter is actually a copy
3429 of the global environ then it may now point to free'd memory
3430 if the environment has been modified since. To avoid this
3431 problem we treat env==NULL as meaning 'use the default'
3436 environ[0] = Nullch;
3437 #ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3440 for (env_base = env; *env; env++)
3442 if ((dup_env_base = (char **)
3443 safesysmalloc( sizeof(char *) * (dup_env_count+1) ))) {
3445 for (env = env_base, dup_env = dup_env_base;
3448 /* With environ one needs to use safesysmalloc(). */
3449 *dup_env = safesysmalloc(strlen(*env) + 1);
3450 (void)strcpy(*dup_env, *env);
3456 #endif /* NEED_ENVIRON_DUP_FOR_MODIFY */
3458 for (; *env; env++) {
3459 if (!(s = strchr(*env,'=')))
3465 sv = newSVpv(s--,0);
3466 (void)hv_store(hv, *env, s - *env, sv, 0);
3469 #ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3472 for (dup_env = dup_env_base; *dup_env; dup_env++)
3473 safesysfree(*dup_env);
3474 safesysfree(dup_env_base);
3476 #endif /* NEED_ENVIRON_DUP_FOR_MODIFY */
3477 #endif /* USE_ENVIRON_ARRAY */
3480 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
3481 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
3485 S_init_perllib(pTHX)
3490 s = PerlEnv_getenv("PERL5LIB");
3492 incpush(s, TRUE, TRUE);
3494 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE);
3496 /* Treat PERL5?LIB as a possible search list logical name -- the
3497 * "natural" VMS idiom for a Unix path string. We allow each
3498 * element to be a set of |-separated directories for compatibility.
3502 if (my_trnlnm("PERL5LIB",buf,0))
3503 do { incpush(buf,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
3505 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE);
3509 /* Use the ~-expanded versions of APPLLIB (undocumented),
3510 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
3513 incpush(APPLLIB_EXP, TRUE, TRUE);
3517 incpush(ARCHLIB_EXP, FALSE, FALSE);
3519 #ifdef MACOS_TRADITIONAL
3521 struct stat tmpstatbuf;
3522 SV * privdir = NEWSV(55, 0);
3523 char * macperl = PerlEnv_getenv("MACPERL");
3528 Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl);
3529 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3530 incpush(SvPVX(privdir), TRUE, FALSE);
3531 Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl);
3532 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3533 incpush(SvPVX(privdir), TRUE, FALSE);
3535 SvREFCNT_dec(privdir);
3538 incpush(":", FALSE, FALSE);
3541 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
3544 incpush(PRIVLIB_EXP, TRUE, FALSE);
3546 incpush(PRIVLIB_EXP, FALSE, FALSE);
3550 /* sitearch is always relative to sitelib on Windows for
3551 * DLL-based path intuition to work correctly */
3552 # if !defined(WIN32)
3553 incpush(SITEARCH_EXP, FALSE, FALSE);
3559 incpush(SITELIB_EXP, TRUE, FALSE); /* this picks up sitearch as well */
3561 incpush(SITELIB_EXP, FALSE, FALSE);
3565 #ifdef SITELIB_STEM /* Search for version-specific dirs below here */
3566 incpush(SITELIB_STEM, FALSE, TRUE);
3569 #ifdef PERL_VENDORARCH_EXP
3570 /* vendorarch is always relative to vendorlib on Windows for
3571 * DLL-based path intuition to work correctly */
3572 # if !defined(WIN32)
3573 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE);
3577 #ifdef PERL_VENDORLIB_EXP
3579 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE); /* this picks up vendorarch as well */
3581 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE);
3585 #ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
3586 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE);
3589 #ifdef PERL_OTHERLIBDIRS
3590 incpush(PERL_OTHERLIBDIRS, TRUE, TRUE);
3594 incpush(".", FALSE, FALSE);
3595 #endif /* MACOS_TRADITIONAL */
3598 #if defined(DOSISH) || defined(EPOC)
3599 # define PERLLIB_SEP ';'
3602 # define PERLLIB_SEP '|'
3604 # if defined(MACOS_TRADITIONAL)
3605 # define PERLLIB_SEP ','
3607 # define PERLLIB_SEP ':'
3611 #ifndef PERLLIB_MANGLE
3612 # define PERLLIB_MANGLE(s,n) (s)
3616 S_incpush(pTHX_ char *p, int addsubdirs, int addoldvers)
3618 SV *subdir = Nullsv;
3623 if (addsubdirs || addoldvers) {
3624 subdir = sv_newmortal();
3627 /* Break at all separators */
3629 SV *libdir = NEWSV(55,0);
3632 /* skip any consecutive separators */
3633 while ( *p == PERLLIB_SEP ) {
3634 /* Uncomment the next line for PATH semantics */
3635 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
3639 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
3640 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
3645 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
3646 p = Nullch; /* break out */
3648 #ifdef MACOS_TRADITIONAL
3649 if (!strchr(SvPVX(libdir), ':'))
3650 sv_insert(libdir, 0, 0, ":", 1);
3651 if (SvPVX(libdir)[SvCUR(libdir)-1] != ':')
3652 sv_catpv(libdir, ":");
3656 * BEFORE pushing libdir onto @INC we may first push version- and
3657 * archname-specific sub-directories.
3659 if (addsubdirs || addoldvers) {
3660 #ifdef PERL_INC_VERSION_LIST
3661 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
3662 const char *incverlist[] = { PERL_INC_VERSION_LIST };
3663 const char **incver;
3665 struct stat tmpstatbuf;
3670 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
3672 while (unix[len-1] == '/') len--; /* Cosmetic */
3673 sv_usepvn(libdir,unix,len);
3676 PerlIO_printf(Perl_error_log,
3677 "Failed to unixify @INC element \"%s\"\n",
3681 #ifdef MACOS_TRADITIONAL
3682 #define PERL_AV_SUFFIX_FMT ""
3683 #define PERL_ARCH_FMT "%s:"
3684 #define PERL_ARCH_FMT_PATH PERL_FS_VER_FMT PERL_AV_SUFFIX_FMT
3686 #define PERL_AV_SUFFIX_FMT "/"
3687 #define PERL_ARCH_FMT "/%s"
3688 #define PERL_ARCH_FMT_PATH PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT
3690 /* .../version/archname if -d .../version/archname */
3691 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH PERL_ARCH_FMT,
3693 (int)PERL_REVISION, (int)PERL_VERSION,
3694 (int)PERL_SUBVERSION, ARCHNAME);
3695 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3696 S_ISDIR(tmpstatbuf.st_mode))
3697 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3699 /* .../version if -d .../version */
3700 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH, libdir,
3701 (int)PERL_REVISION, (int)PERL_VERSION,
3702 (int)PERL_SUBVERSION);
3703 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3704 S_ISDIR(tmpstatbuf.st_mode))
3705 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3707 /* .../archname if -d .../archname */
3708 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, ARCHNAME);
3709 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3710 S_ISDIR(tmpstatbuf.st_mode))
3711 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3714 #ifdef PERL_INC_VERSION_LIST
3716 for (incver = incverlist; *incver; incver++) {
3717 /* .../xxx if -d .../xxx */
3718 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, *incver);
3719 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3720 S_ISDIR(tmpstatbuf.st_mode))
3721 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3727 /* finally push this lib directory on the end of @INC */
3728 av_push(GvAVn(PL_incgv), libdir);
3732 #ifdef USE_5005THREADS
3733 STATIC struct perl_thread *
3734 S_init_main_thread(pTHX)
3736 #if !defined(PERL_IMPLICIT_CONTEXT)
3737 struct perl_thread *thr;
3741 Newz(53, thr, 1, struct perl_thread);
3742 PL_curcop = &PL_compiling;
3743 thr->interp = PERL_GET_INTERP;
3744 thr->cvcache = newHV();
3745 thr->threadsv = newAV();
3746 /* thr->threadsvp is set when find_threadsv is called */
3747 thr->specific = newAV();
3748 thr->flags = THRf_R_JOINABLE;
3749 MUTEX_INIT(&thr->mutex);
3750 /* Handcraft thrsv similarly to mess_sv */
3751 New(53, PL_thrsv, 1, SV);
3752 Newz(53, xpv, 1, XPV);
3753 SvFLAGS(PL_thrsv) = SVt_PV;
3754 SvANY(PL_thrsv) = (void*)xpv;
3755 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
3756 SvPVX(PL_thrsv) = (char*)thr;
3757 SvCUR_set(PL_thrsv, sizeof(thr));
3758 SvLEN_set(PL_thrsv, sizeof(thr));
3759 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
3760 thr->oursv = PL_thrsv;
3761 PL_chopset = " \n-";
3764 MUTEX_LOCK(&PL_threads_mutex);
3770 MUTEX_UNLOCK(&PL_threads_mutex);
3772 #ifdef HAVE_THREAD_INTERN
3773 Perl_init_thread_intern(thr);
3776 #ifdef SET_THREAD_SELF
3777 SET_THREAD_SELF(thr);
3779 thr->self = pthread_self();
3780 #endif /* SET_THREAD_SELF */
3784 * These must come after the thread self setting
3785 * because sv_setpvn does SvTAINT and the taint
3786 * fields thread selfness being set.
3788 PL_toptarget = NEWSV(0,0);
3789 sv_upgrade(PL_toptarget, SVt_PVFM);
3790 sv_setpvn(PL_toptarget, "", 0);
3791 PL_bodytarget = NEWSV(0,0);
3792 sv_upgrade(PL_bodytarget, SVt_PVFM);
3793 sv_setpvn(PL_bodytarget, "", 0);
3794 PL_formtarget = PL_bodytarget;
3795 thr->errsv = newSVpvn("", 0);
3796 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
3799 PL_peepp = MEMBER_TO_FPTR(Perl_peep);
3800 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3801 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3802 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3803 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3804 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
3806 PL_reginterp_cnt = 0;
3810 #endif /* USE_5005THREADS */
3813 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
3816 line_t oldline = CopLINE(PL_curcop);
3822 while (AvFILL(paramList) >= 0) {
3823 cv = (CV*)av_shift(paramList);
3824 if (PL_savebegin && (paramList == PL_beginav)) {
3825 /* save PL_beginav for compiler */
3826 if (! PL_beginav_save)
3827 PL_beginav_save = newAV();
3828 av_push(PL_beginav_save, (SV*)cv);
3832 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3833 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_list_body), cv);
3839 #ifndef PERL_FLEXIBLE_EXCEPTIONS
3843 (void)SvPV(atsv, len);
3846 PL_curcop = &PL_compiling;
3847 CopLINE_set(PL_curcop, oldline);
3848 if (paramList == PL_beginav)
3849 sv_catpv(atsv, "BEGIN failed--compilation aborted");
3851 Perl_sv_catpvf(aTHX_ atsv,
3852 "%s failed--call queue aborted",
3853 paramList == PL_checkav ? "CHECK"
3854 : paramList == PL_initav ? "INIT"
3856 while (PL_scopestack_ix > oldscope)
3859 Perl_croak(aTHX_ "%s", SvPVx(atsv, n_a));
3866 /* my_exit() was called */
3867 while (PL_scopestack_ix > oldscope)
3870 PL_curstash = PL_defstash;
3871 PL_curcop = &PL_compiling;
3872 CopLINE_set(PL_curcop, oldline);
3874 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
3875 if (paramList == PL_beginav)
3876 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
3878 Perl_croak(aTHX_ "%s failed--call queue aborted",
3879 paramList == PL_checkav ? "CHECK"
3880 : paramList == PL_initav ? "INIT"
3887 PL_curcop = &PL_compiling;
3888 CopLINE_set(PL_curcop, oldline);
3891 PerlIO_printf(Perl_error_log, "panic: restartop\n");
3899 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3901 S_vcall_list_body(pTHX_ va_list args)
3903 CV *cv = va_arg(args, CV*);
3904 return call_list_body(cv);
3909 S_call_list_body(pTHX_ CV *cv)
3911 PUSHMARK(PL_stack_sp);
3912 call_sv((SV*)cv, G_EVAL|G_DISCARD);
3917 Perl_my_exit(pTHX_ U32 status)
3919 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
3920 thr, (unsigned long) status));
3929 STATUS_NATIVE_SET(status);
3936 Perl_my_failure_exit(pTHX)
3939 if (vaxc$errno & 1) {
3940 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
3941 STATUS_NATIVE_SET(44);
3944 if (!vaxc$errno && errno) /* unlikely */
3945 STATUS_NATIVE_SET(44);
3947 STATUS_NATIVE_SET(vaxc$errno);
3952 STATUS_POSIX_SET(errno);
3954 exitstatus = STATUS_POSIX >> 8;
3955 if (exitstatus & 255)
3956 STATUS_POSIX_SET(exitstatus);
3958 STATUS_POSIX_SET(255);
3965 S_my_exit_jump(pTHX)
3967 register PERL_CONTEXT *cx;
3972 SvREFCNT_dec(PL_e_script);
3973 PL_e_script = Nullsv;
3976 POPSTACK_TO(PL_mainstack);
3977 if (cxstack_ix >= 0) {
3980 POPBLOCK(cx,PL_curpm);
3988 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen)
3991 p = SvPVX(PL_e_script);
3992 nl = strchr(p, '\n');
3993 nl = (nl) ? nl+1 : SvEND(PL_e_script);
3995 filter_del(read_e_script);
3998 sv_catpvn(buf_sv, p, nl-p);
3999 sv_chop(PL_e_script, nl);