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_rs = newSVpvn("\n", 1);
220 PL_lex_state = LEX_NOTPARSING;
226 SET_NUMERIC_STANDARD();
230 PL_patchlevel = NEWSV(0,4);
231 (void)SvUPGRADE(PL_patchlevel, SVt_PVNV);
232 if (PERL_REVISION > 127 || PERL_VERSION > 127 || PERL_SUBVERSION > 127)
233 SvGROW(PL_patchlevel, UTF8_MAXLEN*3+1);
234 s = (U8*)SvPVX(PL_patchlevel);
235 /* Build version strings using "native" characters */
236 s = uvchr_to_utf8(s, (UV)PERL_REVISION);
237 s = uvchr_to_utf8(s, (UV)PERL_VERSION);
238 s = uvchr_to_utf8(s, (UV)PERL_SUBVERSION);
240 SvCUR_set(PL_patchlevel, s - (U8*)SvPVX(PL_patchlevel));
241 SvPOK_on(PL_patchlevel);
242 SvNVX(PL_patchlevel) = (NV)PERL_REVISION
243 + ((NV)PERL_VERSION / (NV)1000)
244 #if defined(PERL_SUBVERSION) && PERL_SUBVERSION > 0
245 + ((NV)PERL_SUBVERSION / (NV)1000000)
248 SvNOK_on(PL_patchlevel); /* dual valued */
249 SvUTF8_on(PL_patchlevel);
250 SvREADONLY_on(PL_patchlevel);
253 #if defined(LOCAL_PATCH_COUNT)
254 PL_localpatches = local_patches; /* For possible -v */
257 #ifdef HAVE_INTERP_INTERN
261 PerlIO_init(); /* Hook to IO system */
263 PL_fdpid = newAV(); /* for remembering popen pids by fd */
264 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
265 PL_errors = newSVpvn("",0);
267 PL_regex_padav = newAV();
268 av_push(PL_regex_padav,(SV*)newAV()); /* First entry is an array of empty elements */
269 PL_regex_pad = AvARRAY(PL_regex_padav);
271 #ifdef USE_REENTRANT_API
272 New(31337, PL_reentrant_buffer,1, REBUF);
273 New(31337, PL_reentrant_buffer->tmbuff,1, struct tm);
276 /* Note that strtab is a rather special HV. Assumptions are made
277 about not iterating on it, and not adding tie magic to it.
278 It is properly deallocated in perl_destruct() */
281 #ifdef USE_5005THREADS
282 MUTEX_INIT(&PL_strtab_mutex);
284 HvSHAREKEYS_off(PL_strtab); /* mandatory */
285 hv_ksplit(PL_strtab, 512);
291 =for apidoc perl_destruct
293 Shuts down a Perl interpreter. See L<perlembed>.
301 volatile int destruct_level; /* 0=none, 1=full, 2=full with checks */
303 #ifdef USE_5005THREADS
306 #endif /* USE_5005THREADS */
308 /* wait for all pseudo-forked children to finish */
309 PERL_WAIT_FOR_CHILDREN;
311 #ifdef USE_5005THREADS
313 /* Pass 1 on any remaining threads: detach joinables, join zombies */
315 MUTEX_LOCK(&PL_threads_mutex);
316 DEBUG_S(PerlIO_printf(Perl_debug_log,
317 "perl_destruct: waiting for %d threads...\n",
319 for (t = thr->next; t != thr; t = t->next) {
320 MUTEX_LOCK(&t->mutex);
321 switch (ThrSTATE(t)) {
324 DEBUG_S(PerlIO_printf(Perl_debug_log,
325 "perl_destruct: joining zombie %p\n", t));
326 ThrSETSTATE(t, THRf_DEAD);
327 MUTEX_UNLOCK(&t->mutex);
330 * The SvREFCNT_dec below may take a long time (e.g. av
331 * may contain an object scalar whose destructor gets
332 * called) so we have to unlock threads_mutex and start
335 MUTEX_UNLOCK(&PL_threads_mutex);
337 SvREFCNT_dec((SV*)av);
338 DEBUG_S(PerlIO_printf(Perl_debug_log,
339 "perl_destruct: joined zombie %p OK\n", t));
341 case THRf_R_JOINABLE:
342 DEBUG_S(PerlIO_printf(Perl_debug_log,
343 "perl_destruct: detaching thread %p\n", t));
344 ThrSETSTATE(t, THRf_R_DETACHED);
346 * We unlock threads_mutex and t->mutex in the opposite order
347 * from which we locked them just so that DETACH won't
348 * deadlock if it panics. It's only a breach of good style
349 * not a bug since they are unlocks not locks.
351 MUTEX_UNLOCK(&PL_threads_mutex);
353 MUTEX_UNLOCK(&t->mutex);
356 DEBUG_S(PerlIO_printf(Perl_debug_log,
357 "perl_destruct: ignoring %p (state %u)\n",
359 MUTEX_UNLOCK(&t->mutex);
360 /* fall through and out */
363 /* We leave the above "Pass 1" loop with threads_mutex still locked */
365 /* Pass 2 on remaining threads: wait for the thread count to drop to one */
366 while (PL_nthreads > 1)
368 DEBUG_S(PerlIO_printf(Perl_debug_log,
369 "perl_destruct: final wait for %d threads\n",
371 COND_WAIT(&PL_nthreads_cond, &PL_threads_mutex);
373 /* At this point, we're the last thread */
374 MUTEX_UNLOCK(&PL_threads_mutex);
375 DEBUG_S(PerlIO_printf(Perl_debug_log, "perl_destruct: armageddon has arrived\n"));
376 MUTEX_DESTROY(&PL_threads_mutex);
377 COND_DESTROY(&PL_nthreads_cond);
379 #endif /* !defined(FAKE_THREADS) */
380 #endif /* USE_5005THREADS */
382 destruct_level = PL_perl_destruct_level;
386 if ((s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL"))) {
388 if (destruct_level < i)
395 if(PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
400 if (PL_endav && !PL_minus_c)
401 call_list(PL_scopestack_ix, PL_endav);
407 /* We must account for everything. */
409 /* Destroy the main CV and syntax tree */
411 PL_curpad = AvARRAY(PL_comppad);
412 op_free(PL_main_root);
413 PL_main_root = Nullop;
415 PL_curcop = &PL_compiling;
416 PL_main_start = Nullop;
417 SvREFCNT_dec(PL_main_cv);
421 /* Tell PerlIO we are about to tear things apart in case
422 we have layers which are using resources that should
426 PerlIO_destruct(aTHX);
428 if (PL_sv_objcount) {
430 * Try to destruct global references. We do this first so that the
431 * destructors and destructees still exist. Some sv's might remain.
432 * Non-referenced objects are on their own.
437 /* unhook hooks which will soon be, or use, destroyed data */
438 SvREFCNT_dec(PL_warnhook);
439 PL_warnhook = Nullsv;
440 SvREFCNT_dec(PL_diehook);
443 /* call exit list functions */
444 while (PL_exitlistlen-- > 0)
445 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
447 Safefree(PL_exitlist);
449 if (destruct_level == 0){
451 DEBUG_P(debprofdump());
453 /* The exit() function will do everything that needs doing. */
454 return STATUS_NATIVE_EXPORT;;
457 /* jettison our possibly duplicated environment */
459 #ifdef USE_ENVIRON_ARRAY
460 if (environ != PL_origenviron) {
463 for (i = 0; environ[i]; i++)
464 safesysfree(environ[i]);
465 /* Must use safesysfree() when working with environ. */
466 safesysfree(environ);
468 environ = PL_origenviron;
473 /* the syntax tree is shared between clones
474 * so op_free(PL_main_root) only ReREFCNT_dec's
475 * REGEXPs in the parent interpreter
476 * we need to manually ReREFCNT_dec for the clones
479 I32 i = AvFILLp(PL_regex_padav) + 1;
480 SV **ary = AvARRAY(PL_regex_padav);
484 REGEXP *re = INT2PTR(REGEXP *,SvIVX(resv));
486 if (SvFLAGS(resv) & SVf_BREAK) {
487 /* this is PL_reg_curpm, already freed
488 * flag is set in regexec.c:S_regtry
490 SvFLAGS(resv) &= ~SVf_BREAK;
492 else if(SvREPADTMP(resv)) {
493 SvREPADTMP_off(resv);
500 SvREFCNT_dec(PL_regex_padav);
501 PL_regex_padav = Nullav;
505 /* loosen bonds of global variables */
508 (void)PerlIO_close(PL_rsfp);
512 /* Filters for program text */
513 SvREFCNT_dec(PL_rsfp_filters);
514 PL_rsfp_filters = Nullav;
517 PL_preprocess = FALSE;
523 PL_doswitches = FALSE;
524 PL_dowarn = G_WARN_OFF;
525 PL_doextract = FALSE;
526 PL_sawampersand = FALSE; /* must save all match strings */
529 Safefree(PL_inplace);
531 SvREFCNT_dec(PL_patchlevel);
534 SvREFCNT_dec(PL_e_script);
535 PL_e_script = Nullsv;
538 while (--PL_origargc >= 0) {
539 Safefree(PL_origargv[PL_origargc]);
541 Safefree(PL_origargv);
543 /* magical thingies */
545 SvREFCNT_dec(PL_ofs_sv); /* $, */
548 SvREFCNT_dec(PL_ors_sv); /* $\ */
551 SvREFCNT_dec(PL_rs); /* $/ */
554 PL_multiline = 0; /* $* */
555 Safefree(PL_osname); /* $^O */
558 SvREFCNT_dec(PL_statname);
559 PL_statname = Nullsv;
562 /* defgv, aka *_ should be taken care of elsewhere */
564 /* clean up after study() */
565 SvREFCNT_dec(PL_lastscream);
566 PL_lastscream = Nullsv;
567 Safefree(PL_screamfirst);
569 Safefree(PL_screamnext);
573 Safefree(PL_efloatbuf);
574 PL_efloatbuf = Nullch;
577 /* startup and shutdown function lists */
578 SvREFCNT_dec(PL_beginav);
579 SvREFCNT_dec(PL_beginav_save);
580 SvREFCNT_dec(PL_endav);
581 SvREFCNT_dec(PL_checkav);
582 SvREFCNT_dec(PL_initav);
584 PL_beginav_save = Nullav;
589 /* shortcuts just get cleared */
595 PL_argvoutgv = Nullgv;
597 PL_stderrgv = Nullgv;
598 PL_last_in_gv = Nullgv;
600 PL_debstash = Nullhv;
602 /* reset so print() ends up where we expect */
605 SvREFCNT_dec(PL_argvout_stack);
606 PL_argvout_stack = Nullav;
608 SvREFCNT_dec(PL_modglobal);
609 PL_modglobal = Nullhv;
610 SvREFCNT_dec(PL_preambleav);
611 PL_preambleav = Nullav;
612 SvREFCNT_dec(PL_subname);
614 SvREFCNT_dec(PL_linestr);
616 SvREFCNT_dec(PL_pidstatus);
617 PL_pidstatus = Nullhv;
618 SvREFCNT_dec(PL_toptarget);
619 PL_toptarget = Nullsv;
620 SvREFCNT_dec(PL_bodytarget);
621 PL_bodytarget = Nullsv;
622 PL_formtarget = Nullsv;
624 /* free locale stuff */
625 #ifdef USE_LOCALE_COLLATE
626 Safefree(PL_collation_name);
627 PL_collation_name = Nullch;
630 #ifdef USE_LOCALE_NUMERIC
631 Safefree(PL_numeric_name);
632 PL_numeric_name = Nullch;
633 SvREFCNT_dec(PL_numeric_radix_sv);
636 /* clear utf8 character classes */
637 SvREFCNT_dec(PL_utf8_alnum);
638 SvREFCNT_dec(PL_utf8_alnumc);
639 SvREFCNT_dec(PL_utf8_ascii);
640 SvREFCNT_dec(PL_utf8_alpha);
641 SvREFCNT_dec(PL_utf8_space);
642 SvREFCNT_dec(PL_utf8_cntrl);
643 SvREFCNT_dec(PL_utf8_graph);
644 SvREFCNT_dec(PL_utf8_digit);
645 SvREFCNT_dec(PL_utf8_upper);
646 SvREFCNT_dec(PL_utf8_lower);
647 SvREFCNT_dec(PL_utf8_print);
648 SvREFCNT_dec(PL_utf8_punct);
649 SvREFCNT_dec(PL_utf8_xdigit);
650 SvREFCNT_dec(PL_utf8_mark);
651 SvREFCNT_dec(PL_utf8_toupper);
652 SvREFCNT_dec(PL_utf8_tolower);
653 PL_utf8_alnum = Nullsv;
654 PL_utf8_alnumc = Nullsv;
655 PL_utf8_ascii = Nullsv;
656 PL_utf8_alpha = Nullsv;
657 PL_utf8_space = Nullsv;
658 PL_utf8_cntrl = Nullsv;
659 PL_utf8_graph = Nullsv;
660 PL_utf8_digit = Nullsv;
661 PL_utf8_upper = Nullsv;
662 PL_utf8_lower = Nullsv;
663 PL_utf8_print = Nullsv;
664 PL_utf8_punct = Nullsv;
665 PL_utf8_xdigit = Nullsv;
666 PL_utf8_mark = Nullsv;
667 PL_utf8_toupper = Nullsv;
668 PL_utf8_totitle = Nullsv;
669 PL_utf8_tolower = Nullsv;
671 if (!specialWARN(PL_compiling.cop_warnings))
672 SvREFCNT_dec(PL_compiling.cop_warnings);
673 PL_compiling.cop_warnings = Nullsv;
674 if (!specialCopIO(PL_compiling.cop_io))
675 SvREFCNT_dec(PL_compiling.cop_io);
676 PL_compiling.cop_io = Nullsv;
678 Safefree(CopFILE(&PL_compiling));
679 CopFILE(&PL_compiling) = Nullch;
680 Safefree(CopSTASHPV(&PL_compiling));
682 SvREFCNT_dec(CopFILEGV(&PL_compiling));
683 CopFILEGV(&PL_compiling) = Nullgv;
684 /* cop_stash is not refcounted */
687 /* Prepare to destruct main symbol table. */
692 SvREFCNT_dec(PL_curstname);
693 PL_curstname = Nullsv;
695 /* clear queued errors */
696 SvREFCNT_dec(PL_errors);
700 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
701 if (PL_scopestack_ix != 0)
702 Perl_warner(aTHX_ WARN_INTERNAL,
703 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
704 (long)PL_scopestack_ix);
705 if (PL_savestack_ix != 0)
706 Perl_warner(aTHX_ WARN_INTERNAL,
707 "Unbalanced saves: %ld more saves than restores\n",
708 (long)PL_savestack_ix);
709 if (PL_tmps_floor != -1)
710 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced tmps: %ld more allocs than frees\n",
711 (long)PL_tmps_floor + 1);
712 if (cxstack_ix != -1)
713 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced context: %ld more PUSHes than POPs\n",
714 (long)cxstack_ix + 1);
717 /* Now absolutely destruct everything, somehow or other, loops or no. */
718 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
719 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
721 /* the 2 is for PL_fdpid and PL_strtab */
722 while (PL_sv_count > 2 && sv_clean_all())
725 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
726 SvFLAGS(PL_fdpid) |= SVt_PVAV;
727 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
728 SvFLAGS(PL_strtab) |= SVt_PVHV;
730 AvREAL_off(PL_fdpid); /* no surviving entries */
731 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
734 #ifdef HAVE_INTERP_INTERN
738 /* Destruct the global string table. */
740 /* Yell and reset the HeVAL() slots that are still holding refcounts,
741 * so that sv_free() won't fail on them.
749 max = HvMAX(PL_strtab);
750 array = HvARRAY(PL_strtab);
753 if (hent && ckWARN_d(WARN_INTERNAL)) {
754 Perl_warner(aTHX_ WARN_INTERNAL,
755 "Unbalanced string table refcount: (%d) for \"%s\"",
756 HeVAL(hent) - Nullsv, HeKEY(hent));
757 HeVAL(hent) = Nullsv;
767 SvREFCNT_dec(PL_strtab);
770 /* free the pointer table used for cloning */
771 ptr_table_free(PL_ptr_table);
774 /* free special SVs */
776 SvREFCNT(&PL_sv_yes) = 0;
777 sv_clear(&PL_sv_yes);
778 SvANY(&PL_sv_yes) = NULL;
779 SvFLAGS(&PL_sv_yes) = 0;
781 SvREFCNT(&PL_sv_no) = 0;
783 SvANY(&PL_sv_no) = NULL;
784 SvFLAGS(&PL_sv_no) = 0;
786 SvREFCNT(&PL_sv_undef) = 0;
787 SvREADONLY_off(&PL_sv_undef);
789 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
790 Perl_warner(aTHX_ WARN_INTERNAL,"Scalars leaked: %ld\n", (long)PL_sv_count);
792 Safefree(PL_origfilename);
793 Safefree(PL_reg_start_tmp);
795 Safefree(PL_reg_curpm);
796 Safefree(PL_reg_poscache);
797 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
798 Safefree(PL_op_mask);
799 Safefree(PL_psig_ptr);
800 Safefree(PL_psig_name);
801 Safefree(PL_bitcount);
802 Safefree(PL_psig_pend);
804 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
806 DEBUG_P(debprofdump());
807 #ifdef USE_5005THREADS
808 MUTEX_DESTROY(&PL_strtab_mutex);
809 MUTEX_DESTROY(&PL_sv_mutex);
810 MUTEX_DESTROY(&PL_eval_mutex);
811 MUTEX_DESTROY(&PL_cred_mutex);
812 MUTEX_DESTROY(&PL_fdpid_mutex);
813 COND_DESTROY(&PL_eval_cond);
814 #ifdef EMULATE_ATOMIC_REFCOUNTS
815 MUTEX_DESTROY(&PL_svref_mutex);
816 #endif /* EMULATE_ATOMIC_REFCOUNTS */
818 /* As the penultimate thing, free the non-arena SV for thrsv */
819 Safefree(SvPVX(PL_thrsv));
820 Safefree(SvANY(PL_thrsv));
823 #endif /* USE_5005THREADS */
825 #ifdef USE_REENTRANT_API
826 Safefree(PL_reentrant_buffer->tmbuff);
827 Safefree(PL_reentrant_buffer);
832 /* As the absolutely last thing, free the non-arena SV for mess() */
835 /* it could have accumulated taint magic */
836 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
839 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
840 moremagic = mg->mg_moremagic;
841 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
843 Safefree(mg->mg_ptr);
847 /* we know that type >= SVt_PV */
848 (void)SvOOK_off(PL_mess_sv);
849 Safefree(SvPVX(PL_mess_sv));
850 Safefree(SvANY(PL_mess_sv));
851 Safefree(PL_mess_sv);
854 return STATUS_NATIVE_EXPORT;
858 =for apidoc perl_free
860 Releases a Perl interpreter. See L<perlembed>.
868 #if defined(WIN32) || defined(NETWARE)
869 # if defined(PERL_IMPLICIT_SYS)
871 void *host = nw_internal_host;
873 void *host = w32_internal_host;
876 if (PerlProc_lasthost()) {
884 nw5_delete_internal_host(host);
886 win32_delete_internal_host(host);
900 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
902 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
903 PL_exitlist[PL_exitlistlen].fn = fn;
904 PL_exitlist[PL_exitlistlen].ptr = ptr;
909 =for apidoc perl_parse
911 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
917 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
922 #ifdef USE_5005THREADS
926 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
929 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
930 setuid perl scripts securely.\n");
934 #if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
935 _dyld_lookup_and_bind
936 ("__environ", (unsigned long *) &environ_pointer, NULL);
941 /* we copy rather than point to argv
942 * since perl_clone will copy and perl_destruct
943 * has no way of knowing if we've made a copy or
947 New(0, PL_origargv, i+1, char*);
948 PL_origargv[i] = '\0';
950 PL_origargv[i] = savepv(argv[i]);
954 #ifdef USE_ENVIRON_ARRAY
955 PL_origenviron = environ;
960 /* Come here if running an undumped a.out. */
962 PL_origfilename = savepv(argv[0]);
963 PL_do_undump = FALSE;
964 cxstack_ix = -1; /* start label stack again */
966 init_postdump_symbols(argc,argv,env);
971 PL_curpad = AvARRAY(PL_comppad);
972 op_free(PL_main_root);
973 PL_main_root = Nullop;
975 PL_main_start = Nullop;
976 SvREFCNT_dec(PL_main_cv);
980 oldscope = PL_scopestack_ix;
981 PL_dowarn = G_WARN_OFF;
983 #ifdef PERL_FLEXIBLE_EXCEPTIONS
984 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
990 #ifndef PERL_FLEXIBLE_EXCEPTIONS
991 parse_body(env,xsinit);
994 call_list(oldscope, PL_checkav);
1001 /* my_exit() was called */
1002 while (PL_scopestack_ix > oldscope)
1005 PL_curstash = PL_defstash;
1007 call_list(oldscope, PL_checkav);
1008 ret = STATUS_NATIVE_EXPORT;
1011 PerlIO_printf(Perl_error_log, "panic: top_env\n");
1019 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1021 S_vparse_body(pTHX_ va_list args)
1023 char **env = va_arg(args, char**);
1024 XSINIT_t xsinit = va_arg(args, XSINIT_t);
1026 return parse_body(env, xsinit);
1031 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
1033 int argc = PL_origargc;
1034 char **argv = PL_origargv;
1035 char *scriptname = NULL;
1037 VOL bool dosearch = FALSE;
1038 char *validarg = "";
1042 char *cddir = Nullch;
1044 sv_setpvn(PL_linestr,"",0);
1045 sv = newSVpvn("",0); /* first used for -I flags */
1049 for (argc--,argv++; argc > 0; argc--,argv++) {
1050 if (argv[0][0] != '-' || !argv[0][1])
1054 validarg = " PHOOEY ";
1063 win32_argv2utf8(argc-1, argv+1);
1066 #ifndef PERL_STRICT_CR
1090 if ((s = moreswitches(s)))
1100 #ifdef MACOS_TRADITIONAL
1101 /* ignore -e for Dev:Pseudo argument */
1102 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
1105 if (PL_euid != PL_uid || PL_egid != PL_gid)
1106 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
1108 PL_e_script = newSVpvn("",0);
1109 filter_add(read_e_script, NULL);
1112 sv_catpv(PL_e_script, s);
1114 sv_catpv(PL_e_script, argv[1]);
1118 Perl_croak(aTHX_ "No code specified for -e");
1119 sv_catpv(PL_e_script, "\n");
1122 case 'I': /* -I handled both here and in moreswitches() */
1124 if (!*++s && (s=argv[1]) != Nullch) {
1129 STRLEN len = strlen(s);
1130 p = savepvn(s, len);
1131 incpush(p, TRUE, TRUE);
1132 sv_catpvn(sv, "-I", 2);
1133 sv_catpvn(sv, p, len);
1134 sv_catpvn(sv, " ", 1);
1138 Perl_croak(aTHX_ "No directory specified for -I");
1142 PL_preprocess = TRUE;
1152 PL_preambleav = newAV();
1153 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
1155 PL_Sv = newSVpv("print myconfig();",0);
1157 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
1159 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
1161 sv_catpv(PL_Sv,"\" Compile-time options:");
1163 sv_catpv(PL_Sv," DEBUGGING");
1165 # ifdef MULTIPLICITY
1166 sv_catpv(PL_Sv," MULTIPLICITY");
1168 # ifdef USE_5005THREADS
1169 sv_catpv(PL_Sv," USE_5005THREADS");
1171 # ifdef USE_ITHREADS
1172 sv_catpv(PL_Sv," USE_ITHREADS");
1174 # ifdef USE_64_BIT_INT
1175 sv_catpv(PL_Sv," USE_64_BIT_INT");
1177 # ifdef USE_64_BIT_ALL
1178 sv_catpv(PL_Sv," USE_64_BIT_ALL");
1180 # ifdef USE_LONG_DOUBLE
1181 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1183 # ifdef USE_LARGE_FILES
1184 sv_catpv(PL_Sv," USE_LARGE_FILES");
1187 sv_catpv(PL_Sv," USE_SOCKS");
1189 # ifdef PERL_IMPLICIT_CONTEXT
1190 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1192 # ifdef PERL_IMPLICIT_SYS
1193 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1195 sv_catpv(PL_Sv,"\\n\",");
1197 #if defined(LOCAL_PATCH_COUNT)
1198 if (LOCAL_PATCH_COUNT > 0) {
1200 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
1201 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1202 if (PL_localpatches[i])
1203 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
1207 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
1210 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
1212 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
1215 sv_catpv(PL_Sv, "; \
1217 @env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; ");
1220 push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
1223 print \" \\%ENV:\\n @env\\n\" if @env; \
1224 print \" \\@INC:\\n @INC\\n\";");
1227 PL_Sv = newSVpv("config_vars(qw(",0);
1228 sv_catpv(PL_Sv, ++s);
1229 sv_catpv(PL_Sv, "))");
1232 av_push(PL_preambleav, PL_Sv);
1233 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1236 PL_doextract = TRUE;
1244 if (!*++s || isSPACE(*s)) {
1248 /* catch use of gnu style long options */
1249 if (strEQ(s, "version")) {
1253 if (strEQ(s, "help")) {
1260 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1266 #ifndef SECURE_INTERNAL_GETENV
1269 (s = PerlEnv_getenv("PERL5OPT")))
1274 if (*s == '-' && *(s+1) == 'T')
1277 char *popt_copy = Nullch;
1290 if (!strchr("DIMUdmw", *s))
1291 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
1295 popt_copy = SvPVX(sv_2mortal(newSVpv(popt,0)));
1296 s = popt_copy + (s - popt);
1297 d = popt_copy + (d - popt);
1309 scriptname = argv[0];
1312 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1314 else if (scriptname == Nullch) {
1316 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1324 open_script(scriptname,dosearch,sv,&fdscript);
1326 validate_suid(validarg, scriptname,fdscript);
1329 #if defined(SIGCHLD) || defined(SIGCLD)
1332 # define SIGCHLD SIGCLD
1334 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1335 if (sigstate == SIG_IGN) {
1336 if (ckWARN(WARN_SIGNAL))
1337 Perl_warner(aTHX_ WARN_SIGNAL,
1338 "Can't ignore signal CHLD, forcing to default");
1339 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1345 #ifdef MACOS_TRADITIONAL
1346 if (PL_doextract || gMacPerl_AlwaysExtract) {
1351 if (cddir && PerlDir_chdir(cddir) < 0)
1352 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1356 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1357 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1358 CvUNIQUE_on(PL_compcv);
1360 PL_comppad = newAV();
1361 av_push(PL_comppad, Nullsv);
1362 PL_curpad = AvARRAY(PL_comppad);
1363 PL_comppad_name = newAV();
1364 PL_comppad_name_fill = 0;
1365 PL_min_intro_pending = 0;
1367 #ifdef USE_5005THREADS
1368 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
1369 PL_curpad[0] = (SV*)newAV();
1370 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1371 CvOWNER(PL_compcv) = 0;
1372 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1373 MUTEX_INIT(CvMUTEXP(PL_compcv));
1374 #endif /* USE_5005THREADS */
1376 comppadlist = newAV();
1377 AvREAL_off(comppadlist);
1378 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1379 av_store(comppadlist, 1, (SV*)PL_comppad);
1380 CvPADLIST(PL_compcv) = comppadlist;
1383 boot_core_UNIVERSAL();
1385 boot_core_xsutils();
1389 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
1391 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
1397 # ifdef HAS_SOCKS5_INIT
1398 socks5_init(argv[0]);
1404 init_predump_symbols();
1405 /* init_postdump_symbols not currently designed to be called */
1406 /* more than once (ENV isn't cleared first, for example) */
1407 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
1409 init_postdump_symbols(argc,argv,env);
1413 /* now parse the script */
1415 SETERRNO(0,SS$_NORMAL);
1417 #ifdef MACOS_TRADITIONAL
1418 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1420 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1422 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1423 MacPerl_MPWFileName(PL_origfilename));
1427 if (yyparse() || PL_error_count) {
1429 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
1431 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1436 CopLINE_set(PL_curcop, 0);
1437 PL_curstash = PL_defstash;
1438 PL_preprocess = FALSE;
1440 SvREFCNT_dec(PL_e_script);
1441 PL_e_script = Nullsv;
1445 Not sure that this is still the right place to do this now that we
1446 no longer use PL_nrs. HVDS 2001/09/09
1448 sv_setsv(get_sv("/", TRUE), PL_rs);
1454 SAVECOPFILE(PL_curcop);
1455 SAVECOPLINE(PL_curcop);
1456 gv_check(PL_defstash);
1463 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1464 dump_mstats("after compilation:");
1473 =for apidoc perl_run
1475 Tells a Perl interpreter to run. See L<perlembed>.
1486 #ifdef USE_5005THREADS
1490 oldscope = PL_scopestack_ix;
1492 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1494 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1500 cxstack_ix = -1; /* start context stack again */
1502 case 0: /* normal completion */
1503 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1508 case 2: /* my_exit() */
1509 while (PL_scopestack_ix > oldscope)
1512 PL_curstash = PL_defstash;
1513 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
1514 PL_endav && !PL_minus_c)
1515 call_list(oldscope, PL_endav);
1517 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1518 dump_mstats("after execution: ");
1520 ret = STATUS_NATIVE_EXPORT;
1524 POPSTACK_TO(PL_mainstack);
1527 PerlIO_printf(Perl_error_log, "panic: restartop\n");
1537 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1539 S_vrun_body(pTHX_ va_list args)
1541 I32 oldscope = va_arg(args, I32);
1543 return run_body(oldscope);
1549 S_run_body(pTHX_ I32 oldscope)
1551 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
1552 PL_sawampersand ? "Enabling" : "Omitting"));
1554 if (!PL_restartop) {
1555 DEBUG_x(dump_all());
1556 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
1557 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1561 #ifdef MACOS_TRADITIONAL
1562 PerlIO_printf(Perl_error_log, "%s syntax OK\n", MacPerl_MPWFileName(PL_origfilename));
1564 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
1568 if (PERLDB_SINGLE && PL_DBsingle)
1569 sv_setiv(PL_DBsingle, 1);
1571 call_list(oldscope, PL_initav);
1577 PL_op = PL_restartop;
1581 else if (PL_main_start) {
1582 CvDEPTH(PL_main_cv) = 1;
1583 PL_op = PL_main_start;
1593 =for apidoc p||get_sv
1595 Returns the SV of the specified Perl scalar. If C<create> is set and the
1596 Perl variable does not exist then it will be created. If C<create> is not
1597 set and the variable does not exist then NULL is returned.
1603 Perl_get_sv(pTHX_ const char *name, I32 create)
1606 #ifdef USE_5005THREADS
1607 if (name[1] == '\0' && !isALPHA(name[0])) {
1608 PADOFFSET tmp = find_threadsv(name);
1609 if (tmp != NOT_IN_PAD)
1610 return THREADSV(tmp);
1612 #endif /* USE_5005THREADS */
1613 gv = gv_fetchpv(name, create, SVt_PV);
1620 =for apidoc p||get_av
1622 Returns the AV of the specified Perl array. If C<create> is set and the
1623 Perl variable does not exist then it will be created. If C<create> is not
1624 set and the variable does not exist then NULL is returned.
1630 Perl_get_av(pTHX_ const char *name, I32 create)
1632 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1641 =for apidoc p||get_hv
1643 Returns the HV of the specified Perl hash. If C<create> is set and the
1644 Perl variable does not exist then it will be created. If C<create> is not
1645 set and the variable does not exist then NULL is returned.
1651 Perl_get_hv(pTHX_ const char *name, I32 create)
1653 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1662 =for apidoc p||get_cv
1664 Returns the CV of the specified Perl subroutine. If C<create> is set and
1665 the Perl subroutine does not exist then it will be declared (which has the
1666 same effect as saying C<sub name;>). If C<create> is not set and the
1667 subroutine does not exist then NULL is returned.
1673 Perl_get_cv(pTHX_ const char *name, I32 create)
1675 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
1676 /* XXX unsafe for threads if eval_owner isn't held */
1677 /* XXX this is probably not what they think they're getting.
1678 * It has the same effect as "sub name;", i.e. just a forward
1680 if (create && !GvCVu(gv))
1681 return newSUB(start_subparse(FALSE, 0),
1682 newSVOP(OP_CONST, 0, newSVpv(name,0)),
1690 /* Be sure to refetch the stack pointer after calling these routines. */
1693 =for apidoc p||call_argv
1695 Performs a callback to the specified Perl sub. See L<perlcall>.
1701 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
1703 /* See G_* flags in cop.h */
1704 /* null terminated arg list */
1711 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
1716 return call_pv(sub_name, flags);
1720 =for apidoc p||call_pv
1722 Performs a callback to the specified Perl sub. See L<perlcall>.
1728 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
1729 /* name of the subroutine */
1730 /* See G_* flags in cop.h */
1732 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
1736 =for apidoc p||call_method
1738 Performs a callback to the specified Perl method. The blessed object must
1739 be on the stack. See L<perlcall>.
1745 Perl_call_method(pTHX_ const char *methname, I32 flags)
1746 /* name of the subroutine */
1747 /* See G_* flags in cop.h */
1749 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
1752 /* May be called with any of a CV, a GV, or an SV containing the name. */
1754 =for apidoc p||call_sv
1756 Performs a callback to the Perl sub whose name is in the SV. See
1763 Perl_call_sv(pTHX_ SV *sv, I32 flags)
1764 /* See G_* flags in cop.h */
1767 LOGOP myop; /* fake syntax tree node */
1770 volatile I32 retval = 0;
1772 bool oldcatch = CATCH_GET;
1777 if (flags & G_DISCARD) {
1782 Zero(&myop, 1, LOGOP);
1783 myop.op_next = Nullop;
1784 if (!(flags & G_NOARGS))
1785 myop.op_flags |= OPf_STACKED;
1786 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1787 (flags & G_ARRAY) ? OPf_WANT_LIST :
1792 EXTEND(PL_stack_sp, 1);
1793 *++PL_stack_sp = sv;
1795 oldscope = PL_scopestack_ix;
1797 if (PERLDB_SUB && PL_curstash != PL_debstash
1798 /* Handle first BEGIN of -d. */
1799 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
1800 /* Try harder, since this may have been a sighandler, thus
1801 * curstash may be meaningless. */
1802 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
1803 && !(flags & G_NODEBUG))
1804 PL_op->op_private |= OPpENTERSUB_DB;
1806 if (flags & G_METHOD) {
1807 Zero(&method_op, 1, UNOP);
1808 method_op.op_next = PL_op;
1809 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1810 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
1811 PL_op = (OP*)&method_op;
1814 if (!(flags & G_EVAL)) {
1816 call_body((OP*)&myop, FALSE);
1817 retval = PL_stack_sp - (PL_stack_base + oldmark);
1818 CATCH_SET(oldcatch);
1821 myop.op_other = (OP*)&myop;
1823 /* we're trying to emulate pp_entertry() here */
1825 register PERL_CONTEXT *cx;
1826 I32 gimme = GIMME_V;
1831 push_return(Nullop);
1832 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
1834 PL_eval_root = PL_op; /* Only needed so that goto works right. */
1836 PL_in_eval = EVAL_INEVAL;
1837 if (flags & G_KEEPERR)
1838 PL_in_eval |= EVAL_KEEPERR;
1844 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1846 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1853 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1855 call_body((OP*)&myop, FALSE);
1857 retval = PL_stack_sp - (PL_stack_base + oldmark);
1858 if (!(flags & G_KEEPERR))
1865 /* my_exit() was called */
1866 PL_curstash = PL_defstash;
1869 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1870 Perl_croak(aTHX_ "Callback called exit");
1875 PL_op = PL_restartop;
1879 PL_stack_sp = PL_stack_base + oldmark;
1880 if (flags & G_ARRAY)
1884 *++PL_stack_sp = &PL_sv_undef;
1889 if (PL_scopestack_ix > oldscope) {
1893 register PERL_CONTEXT *cx;
1905 if (flags & G_DISCARD) {
1906 PL_stack_sp = PL_stack_base + oldmark;
1915 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1917 S_vcall_body(pTHX_ va_list args)
1919 OP *myop = va_arg(args, OP*);
1920 int is_eval = va_arg(args, int);
1922 call_body(myop, is_eval);
1928 S_call_body(pTHX_ OP *myop, int is_eval)
1930 if (PL_op == myop) {
1932 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
1934 PL_op = Perl_pp_entersub(aTHX); /* this does */
1940 /* Eval a string. The G_EVAL flag is always assumed. */
1943 =for apidoc p||eval_sv
1945 Tells Perl to C<eval> the string in the SV.
1951 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
1953 /* See G_* flags in cop.h */
1956 UNOP myop; /* fake syntax tree node */
1957 volatile I32 oldmark = SP - PL_stack_base;
1958 volatile I32 retval = 0;
1964 if (flags & G_DISCARD) {
1971 Zero(PL_op, 1, UNOP);
1972 EXTEND(PL_stack_sp, 1);
1973 *++PL_stack_sp = sv;
1974 oldscope = PL_scopestack_ix;
1976 if (!(flags & G_NOARGS))
1977 myop.op_flags = OPf_STACKED;
1978 myop.op_next = Nullop;
1979 myop.op_type = OP_ENTEREVAL;
1980 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1981 (flags & G_ARRAY) ? OPf_WANT_LIST :
1983 if (flags & G_KEEPERR)
1984 myop.op_flags |= OPf_SPECIAL;
1986 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1988 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1995 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1997 call_body((OP*)&myop,TRUE);
1999 retval = PL_stack_sp - (PL_stack_base + oldmark);
2000 if (!(flags & G_KEEPERR))
2007 /* my_exit() was called */
2008 PL_curstash = PL_defstash;
2011 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
2012 Perl_croak(aTHX_ "Callback called exit");
2017 PL_op = PL_restartop;
2021 PL_stack_sp = PL_stack_base + oldmark;
2022 if (flags & G_ARRAY)
2026 *++PL_stack_sp = &PL_sv_undef;
2032 if (flags & G_DISCARD) {
2033 PL_stack_sp = PL_stack_base + oldmark;
2043 =for apidoc p||eval_pv
2045 Tells Perl to C<eval> the given string and return an SV* result.
2051 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
2054 SV* sv = newSVpv(p, 0);
2056 eval_sv(sv, G_SCALAR);
2063 if (croak_on_error && SvTRUE(ERRSV)) {
2065 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
2071 /* Require a module. */
2074 =for apidoc p||require_pv
2076 Tells Perl to C<require> the file named by the string argument. It is
2077 analogous to the Perl code C<eval "require '$file'">. It's even
2078 implemented that way; consider using Perl_load_module instead.
2083 Perl_require_pv(pTHX_ const char *pv)
2087 PUSHSTACKi(PERLSI_REQUIRE);
2089 sv = sv_newmortal();
2090 sv_setpv(sv, "require '");
2093 eval_sv(sv, G_DISCARD);
2099 Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
2103 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
2104 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
2108 S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
2110 /* This message really ought to be max 23 lines.
2111 * Removed -h because the user already knows that option. Others? */
2113 static char *usage_msg[] = {
2114 "-0[octal] specify record separator (\\0, if no argument)",
2115 "-a autosplit mode with -n or -p (splits $_ into @F)",
2116 "-C enable native wide character system interfaces",
2117 "-c check syntax only (runs BEGIN and CHECK blocks)",
2118 "-d[:debugger] run program under debugger",
2119 "-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2120 "-e 'command' one line of program (several -e's allowed, omit programfile)",
2121 "-F/pattern/ split() pattern for -a switch (//'s are optional)",
2122 "-i[extension] edit <> files in place (makes backup if extension supplied)",
2123 "-Idirectory specify @INC/#include directory (several -I's allowed)",
2124 "-l[octal] enable line ending processing, specifies line terminator",
2125 "-[mM][-]module execute `use/no module...' before executing program",
2126 "-n assume 'while (<>) { ... }' loop around program",
2127 "-p assume loop like -n but print line also, like sed",
2128 "-P run program through C preprocessor before compilation",
2129 "-s enable rudimentary parsing for switches after programfile",
2130 "-S look for programfile using PATH environment variable",
2131 "-T enable tainting checks",
2132 "-u dump core after parsing program",
2133 "-U allow unsafe operations",
2134 "-v print version, subversion (includes VERY IMPORTANT perl info)",
2135 "-V[:variable] print configuration summary (or a single Config.pm variable)",
2136 "-w enable many useful warnings (RECOMMENDED)",
2137 "-W enable all warnings",
2138 "-X disable all warnings",
2139 "-x[directory] strip off text before #!perl line and perhaps cd to directory",
2143 char **p = usage_msg;
2145 PerlIO_printf(PerlIO_stdout(),
2146 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2149 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
2152 /* This routine handles any switches that can be given during run */
2155 Perl_moreswitches(pTHX_ char *s)
2165 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
2166 SvREFCNT_dec(PL_rs);
2167 if (rschar & ~((U8)~0))
2168 PL_rs = &PL_sv_undef;
2169 else if (!rschar && numlen >= 2)
2170 PL_rs = newSVpvn("", 0);
2173 PL_rs = newSVpvn(&ch, 1);
2178 PL_widesyscalls = TRUE;
2183 PL_splitstr = savepv(s + 1);
2197 /* The following permits -d:Mod to accepts arguments following an =
2198 in the fashion that -MSome::Mod does. */
2199 if (*s == ':' || *s == '=') {
2202 sv = newSVpv("use Devel::", 0);
2204 /* We now allow -d:Module=Foo,Bar */
2205 while(isALNUM(*s) || *s==':') ++s;
2207 sv_catpv(sv, start);
2209 sv_catpvn(sv, start, s-start);
2210 sv_catpv(sv, " split(/,/,q{");
2215 my_setenv("PERL5DB", SvPV(sv, PL_na));
2218 PL_perldb = PERLDB_ALL;
2226 if (isALPHA(s[1])) {
2227 /* if adding extra options, remember to update DEBUG_MASK */
2228 static char debopts[] = "psltocPmfrxuLHXDSTR";
2231 for (s++; *s && (d = strchr(debopts,*s)); s++)
2232 PL_debug |= 1 << (d - debopts);
2235 PL_debug = atoi(s+1);
2236 for (s++; isDIGIT(*s); s++) ;
2238 PL_debug |= DEBUG_TOP_FLAG;
2240 if (ckWARN_d(WARN_DEBUGGING))
2241 Perl_warner(aTHX_ WARN_DEBUGGING,
2242 "Recompile perl with -DDEBUGGING to use -D switch\n");
2243 for (s++; isALNUM(*s); s++) ;
2249 usage(PL_origargv[0]);
2253 Safefree(PL_inplace);
2254 PL_inplace = savepv(s+1);
2256 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
2259 if (*s == '-') /* Additional switches on #! line. */
2263 case 'I': /* -I handled both here and in parse_perl() */
2266 while (*s && isSPACE(*s))
2271 /* ignore trailing spaces (possibly followed by other switches) */
2273 for (e = p; *e && !isSPACE(*e); e++) ;
2277 } while (*p && *p != '-');
2278 e = savepvn(s, e-s);
2279 incpush(e, TRUE, TRUE);
2286 Perl_croak(aTHX_ "No directory specified for -I");
2292 SvREFCNT_dec(PL_ors_sv);
2297 PL_ors_sv = newSVpvn("\n",1);
2298 numlen = 3 + (*s == '0');
2299 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
2303 if (RsPARA(PL_rs)) {
2304 PL_ors_sv = newSVpvn("\n\n",2);
2307 PL_ors_sv = newSVsv(PL_rs);
2312 forbid_setid("-M"); /* XXX ? */
2315 forbid_setid("-m"); /* XXX ? */
2320 /* -M-foo == 'no foo' */
2321 if (*s == '-') { use = "no "; ++s; }
2322 sv = newSVpv(use,0);
2324 /* We allow -M'Module qw(Foo Bar)' */
2325 while(isALNUM(*s) || *s==':') ++s;
2327 sv_catpv(sv, start);
2328 if (*(start-1) == 'm') {
2330 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
2331 sv_catpv( sv, " ()");
2335 Perl_croak(aTHX_ "Module name required with -%c option",
2337 sv_catpvn(sv, start, s-start);
2338 sv_catpv(sv, " split(/,/,q{");
2344 PL_preambleav = newAV();
2345 av_push(PL_preambleav, sv);
2348 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
2360 PL_doswitches = TRUE;
2365 Perl_croak(aTHX_ "Too late for \"-T\" option");
2369 #ifdef MACOS_TRADITIONAL
2370 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2372 PL_do_undump = TRUE;
2381 PerlIO_printf(PerlIO_stdout(),
2382 Perl_form(aTHX_ "\nThis is perl, v%"VDf" built for %s",
2383 PL_patchlevel, ARCHNAME));
2385 /* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
2386 PerlIO_printf(PerlIO_stdout(),
2387 Perl_form(aTHX_ "\nThis is perl, version %vd\n", PL_patchlevel));
2388 PerlIO_printf(PerlIO_stdout(),
2389 Perl_form(aTHX_ " built under %s at %s %s\n",
2390 OSNAME, __DATE__, __TIME__));
2391 PerlIO_printf(PerlIO_stdout(),
2392 Perl_form(aTHX_ " OS Specific Release: %s\n",
2396 #if defined(LOCAL_PATCH_COUNT)
2397 if (LOCAL_PATCH_COUNT > 0)
2398 PerlIO_printf(PerlIO_stdout(),
2399 "\n(with %d registered patch%s, "
2400 "see perl -V for more detail)",
2401 (int)LOCAL_PATCH_COUNT,
2402 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
2405 PerlIO_printf(PerlIO_stdout(),
2406 "\n\nCopyright 1987-2001, Larry Wall\n");
2407 #ifdef MACOS_TRADITIONAL
2408 PerlIO_printf(PerlIO_stdout(),
2409 "\nMac OS port Copyright (c) 1991-2001, Matthias Neeracher\n");
2412 PerlIO_printf(PerlIO_stdout(),
2413 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
2416 PerlIO_printf(PerlIO_stdout(),
2417 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2418 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
2421 PerlIO_printf(PerlIO_stdout(),
2422 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2423 "Version 5 port Copyright (c) 1994-1999, Andreas Kaiser, Ilya Zakharevich\n");
2426 PerlIO_printf(PerlIO_stdout(),
2427 "atariST series port, ++jrb bammi@cadence.com\n");
2430 PerlIO_printf(PerlIO_stdout(),
2431 "BeOS port Copyright Tom Spindler, 1997-1999\n");
2434 PerlIO_printf(PerlIO_stdout(),
2435 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2001\n");
2438 PerlIO_printf(PerlIO_stdout(),
2439 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
2442 PerlIO_printf(PerlIO_stdout(),
2443 "Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n");
2446 PerlIO_printf(PerlIO_stdout(),
2447 "VM/ESA port by Neale Ferguson, 1998-1999\n");
2450 PerlIO_printf(PerlIO_stdout(),
2451 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
2454 PerlIO_printf(PerlIO_stdout(),
2455 "MiNT port by Guido Flohr, 1997-1999\n");
2458 PerlIO_printf(PerlIO_stdout(),
2459 "EPOC port by Olaf Flebbe, 1999-2000\n");
2462 printf("WINCE port by Rainer Keuchel, 2001\n");
2463 printf("Built on " __DATE__ " " __TIME__ "\n\n");
2466 #ifdef BINARY_BUILD_NOTICE
2467 BINARY_BUILD_NOTICE;
2469 PerlIO_printf(PerlIO_stdout(),
2471 Perl may be copied only under the terms of either the Artistic License or the\n\
2472 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
2473 Complete documentation for Perl, including FAQ lists, should be found on\n\
2474 this system using `man perl' or `perldoc perl'. If you have access to the\n\
2475 Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
2478 if (! (PL_dowarn & G_WARN_ALL_MASK))
2479 PL_dowarn |= G_WARN_ON;
2483 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
2484 PL_compiling.cop_warnings = pWARN_ALL ;
2488 PL_dowarn = G_WARN_ALL_OFF;
2489 PL_compiling.cop_warnings = pWARN_NONE ;
2494 if (s[1] == '-') /* Additional switches on #! line. */
2499 #if defined(WIN32) || !defined(PERL_STRICT_CR)
2505 #ifdef ALTERNATE_SHEBANG
2506 case 'S': /* OS/2 needs -S on "extproc" line. */
2514 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
2519 /* compliments of Tom Christiansen */
2521 /* unexec() can be found in the Gnu emacs distribution */
2522 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
2525 Perl_my_unexec(pTHX)
2533 prog = newSVpv(BIN_EXP, 0);
2534 sv_catpv(prog, "/perl");
2535 file = newSVpv(PL_origfilename, 0);
2536 sv_catpv(file, ".perldump");
2538 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2539 /* unexec prints msg to stderr in case of failure */
2540 PerlProc_exit(status);
2543 # include <lib$routines.h>
2544 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
2546 ABORT(); /* for use with undump */
2551 /* initialize curinterp */
2557 # define PERLVAR(var,type)
2558 # define PERLVARA(var,n,type)
2559 # if defined(PERL_IMPLICIT_CONTEXT)
2560 # if defined(USE_5005THREADS)
2561 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2562 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2563 # else /* !USE_5005THREADS */
2564 # define PERLVARI(var,type,init) aTHX->var = init;
2565 # define PERLVARIC(var,type,init) aTHX->var = init;
2566 # endif /* USE_5005THREADS */
2568 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2569 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2571 # include "intrpvar.h"
2572 # ifndef USE_5005THREADS
2573 # include "thrdvar.h"
2580 # define PERLVAR(var,type)
2581 # define PERLVARA(var,n,type)
2582 # define PERLVARI(var,type,init) PL_##var = init;
2583 # define PERLVARIC(var,type,init) PL_##var = init;
2584 # include "intrpvar.h"
2585 # ifndef USE_5005THREADS
2586 # include "thrdvar.h"
2597 S_init_main_stash(pTHX)
2603 PL_curstash = PL_defstash = newHV();
2604 PL_curstname = newSVpvn("main",4);
2605 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2606 SvREFCNT_dec(GvHV(gv));
2607 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
2609 HvNAME(PL_defstash) = savepv("main");
2610 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2611 GvMULTI_on(PL_incgv);
2612 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2613 GvMULTI_on(PL_hintgv);
2614 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2615 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2616 GvMULTI_on(PL_errgv);
2617 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2618 GvMULTI_on(PL_replgv);
2619 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
2620 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2621 sv_setpvn(ERRSV, "", 0);
2622 PL_curstash = PL_defstash;
2623 CopSTASH_set(&PL_compiling, PL_defstash);
2624 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
2625 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
2626 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
2627 /* We must init $/ before switches are processed. */
2628 sv_setpvn(get_sv("/", TRUE), "\n", 1);
2632 S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
2637 PL_origfilename = savepv("-e");
2640 /* if find_script() returns, it returns a malloc()-ed value */
2641 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
2643 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2644 char *s = scriptname + 8;
2645 *fdscript = atoi(s);
2649 scriptname = savepv(s + 1);
2650 Safefree(PL_origfilename);
2651 PL_origfilename = scriptname;
2657 Safefree(CopFILE(PL_curcop));
2659 SvREFCNT_dec(CopFILEGV(PL_curcop));
2661 CopFILE_set(PL_curcop, PL_origfilename);
2662 if (strEQ(PL_origfilename,"-"))
2664 if (*fdscript >= 0) {
2665 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
2666 #if defined(HAS_FCNTL) && defined(F_SETFD)
2668 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2671 else if (PL_preprocess) {
2672 char *cpp_cfg = CPPSTDIN;
2673 SV *cpp = newSVpvn("",0);
2674 SV *cmd = NEWSV(0,0);
2676 if (strEQ(cpp_cfg, "cppstdin"))
2677 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
2678 sv_catpv(cpp, cpp_cfg);
2680 sv_catpvn(sv, "-I", 2);
2681 sv_catpv(sv,PRIVLIB_EXP);
2683 DEBUG_P(PerlIO_printf(Perl_debug_log,
2684 "PL_preprocess: scriptname=\"%s\", cpp=\"%s\", sv=\"%s\", CPPMINUS=\"%s\"\n",
2685 scriptname, SvPVX (cpp), SvPVX (sv), CPPMINUS));
2686 #if defined(MSDOS) || defined(WIN32)
2687 Perl_sv_setpvf(aTHX_ cmd, "\
2688 sed %s -e \"/^[^#]/b\" \
2689 -e \"/^#[ ]*include[ ]/b\" \
2690 -e \"/^#[ ]*define[ ]/b\" \
2691 -e \"/^#[ ]*if[ ]/b\" \
2692 -e \"/^#[ ]*ifdef[ ]/b\" \
2693 -e \"/^#[ ]*ifndef[ ]/b\" \
2694 -e \"/^#[ ]*else/b\" \
2695 -e \"/^#[ ]*elif[ ]/b\" \
2696 -e \"/^#[ ]*undef[ ]/b\" \
2697 -e \"/^#[ ]*endif/b\" \
2699 %s | %"SVf" -C %"SVf" %s",
2700 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
2703 Perl_sv_setpvf(aTHX_ cmd, "\
2704 %s %s -e '/^[^#]/b' \
2705 -e '/^#[ ]*include[ ]/b' \
2706 -e '/^#[ ]*define[ ]/b' \
2707 -e '/^#[ ]*if[ ]/b' \
2708 -e '/^#[ ]*ifdef[ ]/b' \
2709 -e '/^#[ ]*ifndef[ ]/b' \
2710 -e '/^#[ ]*else/b' \
2711 -e '/^#[ ]*elif[ ]/b' \
2712 -e '/^#[ ]*undef[ ]/b' \
2713 -e '/^#[ ]*endif/b' \
2715 %s | %"SVf" %"SVf" %s",
2717 Perl_sv_setpvf(aTHX_ cmd, "\
2718 %s %s -e '/^[^#]/b' \
2719 -e '/^#[ ]*include[ ]/b' \
2720 -e '/^#[ ]*define[ ]/b' \
2721 -e '/^#[ ]*if[ ]/b' \
2722 -e '/^#[ ]*ifdef[ ]/b' \
2723 -e '/^#[ ]*ifndef[ ]/b' \
2724 -e '/^#[ ]*else/b' \
2725 -e '/^#[ ]*elif[ ]/b' \
2726 -e '/^#[ ]*undef[ ]/b' \
2727 -e '/^#[ ]*endif/b' \
2729 %s | %"SVf" -C %"SVf" %s",
2736 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
2738 scriptname, cpp, sv, CPPMINUS);
2739 PL_doextract = FALSE;
2740 #ifdef IAMSUID /* actually, this is caught earlier */
2741 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
2743 (void)seteuid(PL_uid); /* musn't stay setuid root */
2746 (void)setreuid((Uid_t)-1, PL_uid);
2748 #ifdef HAS_SETRESUID
2749 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
2751 PerlProc_setuid(PL_uid);
2755 if (PerlProc_geteuid() != PL_uid)
2756 Perl_croak(aTHX_ "Can't do seteuid!\n");
2758 #endif /* IAMSUID */
2759 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
2763 else if (!*scriptname) {
2764 forbid_setid("program input from stdin");
2765 PL_rsfp = PerlIO_stdin();
2768 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
2769 #if defined(HAS_FCNTL) && defined(F_SETFD)
2771 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2776 #ifndef IAMSUID /* in case script is not readable before setuid */
2778 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
2779 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2782 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
2783 (int)PERL_REVISION, (int)PERL_VERSION,
2784 (int)PERL_SUBVERSION), PL_origargv);
2785 Perl_croak(aTHX_ "Can't do setuid\n");
2791 Perl_croak(aTHX_ "Can't open perl script: %s\n",
2794 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
2795 CopFILE(PL_curcop), Strerror(errno));
2801 * I_SYSSTATVFS HAS_FSTATVFS
2803 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
2804 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2805 * here so that metaconfig picks them up. */
2809 S_fd_on_nosuid_fs(pTHX_ int fd)
2811 int check_okay = 0; /* able to do all the required sys/libcalls */
2812 int on_nosuid = 0; /* the fd is on a nosuid fs */
2814 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
2815 * fstatvfs() is UNIX98.
2816 * fstatfs() is 4.3 BSD.
2817 * ustat()+getmnt() is pre-4.3 BSD.
2818 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2819 * an irrelevant filesystem while trying to reach the right one.
2822 #undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2824 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2825 defined(HAS_FSTATVFS)
2826 # define FD_ON_NOSUID_CHECK_OKAY
2827 struct statvfs stfs;
2829 check_okay = fstatvfs(fd, &stfs) == 0;
2830 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
2831 # endif /* fstatvfs */
2833 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2834 defined(PERL_MOUNT_NOSUID) && \
2835 defined(HAS_FSTATFS) && \
2836 defined(HAS_STRUCT_STATFS) && \
2837 defined(HAS_STRUCT_STATFS_F_FLAGS)
2838 # define FD_ON_NOSUID_CHECK_OKAY
2841 check_okay = fstatfs(fd, &stfs) == 0;
2842 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
2843 # endif /* fstatfs */
2845 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2846 defined(PERL_MOUNT_NOSUID) && \
2847 defined(HAS_FSTAT) && \
2848 defined(HAS_USTAT) && \
2849 defined(HAS_GETMNT) && \
2850 defined(HAS_STRUCT_FS_DATA) && \
2852 # define FD_ON_NOSUID_CHECK_OKAY
2855 if (fstat(fd, &fdst) == 0) {
2857 if (ustat(fdst.st_dev, &us) == 0) {
2859 /* NOSTAT_ONE here because we're not examining fields which
2860 * vary between that case and STAT_ONE. */
2861 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
2862 size_t cmplen = sizeof(us.f_fname);
2863 if (sizeof(fsd.fd_req.path) < cmplen)
2864 cmplen = sizeof(fsd.fd_req.path);
2865 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2866 fdst.st_dev == fsd.fd_req.dev) {
2868 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2874 # endif /* fstat+ustat+getmnt */
2876 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2877 defined(HAS_GETMNTENT) && \
2878 defined(HAS_HASMNTOPT) && \
2879 defined(MNTOPT_NOSUID)
2880 # define FD_ON_NOSUID_CHECK_OKAY
2881 FILE *mtab = fopen("/etc/mtab", "r");
2882 struct mntent *entry;
2883 struct stat stb, fsb;
2885 if (mtab && (fstat(fd, &stb) == 0)) {
2886 while (entry = getmntent(mtab)) {
2887 if (stat(entry->mnt_dir, &fsb) == 0
2888 && fsb.st_dev == stb.st_dev)
2890 /* found the filesystem */
2892 if (hasmntopt(entry, MNTOPT_NOSUID))
2895 } /* A single fs may well fail its stat(). */
2900 # endif /* getmntent+hasmntopt */
2903 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
2906 #endif /* IAMSUID */
2909 S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
2915 /* do we need to emulate setuid on scripts? */
2917 /* This code is for those BSD systems that have setuid #! scripts disabled
2918 * in the kernel because of a security problem. Merely defining DOSUID
2919 * in perl will not fix that problem, but if you have disabled setuid
2920 * scripts in the kernel, this will attempt to emulate setuid and setgid
2921 * on scripts that have those now-otherwise-useless bits set. The setuid
2922 * root version must be called suidperl or sperlN.NNN. If regular perl
2923 * discovers that it has opened a setuid script, it calls suidperl with
2924 * the same argv that it had. If suidperl finds that the script it has
2925 * just opened is NOT setuid root, it sets the effective uid back to the
2926 * uid. We don't just make perl setuid root because that loses the
2927 * effective uid we had before invoking perl, if it was different from the
2930 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2931 * be defined in suidperl only. suidperl must be setuid root. The
2932 * Configure script will set this up for you if you want it.
2938 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
2939 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
2940 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
2945 #ifndef HAS_SETREUID
2946 /* On this access check to make sure the directories are readable,
2947 * there is actually a small window that the user could use to make
2948 * filename point to an accessible directory. So there is a faint
2949 * chance that someone could execute a setuid script down in a
2950 * non-accessible directory. I don't know what to do about that.
2951 * But I don't think it's too important. The manual lies when
2952 * it says access() is useful in setuid programs.
2954 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
2955 Perl_croak(aTHX_ "Permission denied");
2957 /* If we can swap euid and uid, then we can determine access rights
2958 * with a simple stat of the file, and then compare device and
2959 * inode to make sure we did stat() on the same file we opened.
2960 * Then we just have to make sure he or she can execute it.
2963 struct stat tmpstatbuf;
2967 setreuid(PL_euid,PL_uid) < 0
2970 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
2973 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
2974 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
2975 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
2976 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
2977 #if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
2978 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
2979 Perl_croak(aTHX_ "Permission denied");
2981 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
2982 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
2983 (void)PerlIO_close(PL_rsfp);
2984 Perl_croak(aTHX_ "Permission denied\n");
2988 setreuid(PL_uid,PL_euid) < 0
2990 # if defined(HAS_SETRESUID)
2991 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
2994 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
2995 Perl_croak(aTHX_ "Can't reswap uid and euid");
2996 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
2997 Perl_croak(aTHX_ "Permission denied\n");
2999 #endif /* HAS_SETREUID */
3000 #endif /* IAMSUID */
3002 if (!S_ISREG(PL_statbuf.st_mode))
3003 Perl_croak(aTHX_ "Permission denied");
3004 if (PL_statbuf.st_mode & S_IWOTH)
3005 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
3006 PL_doswitches = FALSE; /* -s is insecure in suid */
3007 CopLINE_inc(PL_curcop);
3008 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
3009 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
3010 Perl_croak(aTHX_ "No #! line");
3011 s = SvPV(PL_linestr,n_a)+2;
3013 while (!isSPACE(*s)) s++;
3014 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
3015 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
3016 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
3017 Perl_croak(aTHX_ "Not a perl script");
3018 while (*s == ' ' || *s == '\t') s++;
3020 * #! arg must be what we saw above. They can invoke it by
3021 * mentioning suidperl explicitly, but they may not add any strange
3022 * arguments beyond what #! says if they do invoke suidperl that way.
3024 len = strlen(validarg);
3025 if (strEQ(validarg," PHOOEY ") ||
3026 strnNE(s,validarg,len) || !isSPACE(s[len]))
3027 Perl_croak(aTHX_ "Args must match #! line");
3030 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
3031 PL_euid == PL_statbuf.st_uid)
3033 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3034 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3035 #endif /* IAMSUID */
3037 if (PL_euid) { /* oops, we're not the setuid root perl */
3038 (void)PerlIO_close(PL_rsfp);
3041 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
3042 (int)PERL_REVISION, (int)PERL_VERSION,
3043 (int)PERL_SUBVERSION), PL_origargv);
3045 Perl_croak(aTHX_ "Can't do setuid\n");
3048 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
3050 (void)setegid(PL_statbuf.st_gid);
3053 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
3055 #ifdef HAS_SETRESGID
3056 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
3058 PerlProc_setgid(PL_statbuf.st_gid);
3062 if (PerlProc_getegid() != PL_statbuf.st_gid)
3063 Perl_croak(aTHX_ "Can't do setegid!\n");
3065 if (PL_statbuf.st_mode & S_ISUID) {
3066 if (PL_statbuf.st_uid != PL_euid)
3068 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
3071 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
3073 #ifdef HAS_SETRESUID
3074 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
3076 PerlProc_setuid(PL_statbuf.st_uid);
3080 if (PerlProc_geteuid() != PL_statbuf.st_uid)
3081 Perl_croak(aTHX_ "Can't do seteuid!\n");
3083 else if (PL_uid) { /* oops, mustn't run as root */
3085 (void)seteuid((Uid_t)PL_uid);
3088 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
3090 #ifdef HAS_SETRESUID
3091 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
3093 PerlProc_setuid((Uid_t)PL_uid);
3097 if (PerlProc_geteuid() != PL_uid)
3098 Perl_croak(aTHX_ "Can't do seteuid!\n");
3101 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
3102 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
3105 else if (PL_preprocess)
3106 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
3107 else if (fdscript >= 0)
3108 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
3110 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
3112 /* We absolutely must clear out any saved ids here, so we */
3113 /* exec the real perl, substituting fd script for scriptname. */
3114 /* (We pass script name as "subdir" of fd, which perl will grok.) */
3115 PerlIO_rewind(PL_rsfp);
3116 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
3117 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3118 if (!PL_origargv[which])
3119 Perl_croak(aTHX_ "Permission denied");
3120 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
3121 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
3122 #if defined(HAS_FCNTL) && defined(F_SETFD)
3123 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
3125 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
3126 (int)PERL_REVISION, (int)PERL_VERSION,
3127 (int)PERL_SUBVERSION), PL_origargv);/* try again */
3128 Perl_croak(aTHX_ "Can't do setuid\n");
3129 #endif /* IAMSUID */
3131 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
3132 #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
3133 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3134 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3136 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3139 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3140 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3141 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3142 /* not set-id, must be wrapped */
3148 S_find_beginning(pTHX)
3150 register char *s, *s2;
3152 /* skip forward in input to the real script? */
3155 #ifdef MACOS_TRADITIONAL
3156 /* Since the Mac OS does not honor #! arguments for us, we do it ourselves */
3158 while (PL_doextract || gMacPerl_AlwaysExtract) {
3159 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3160 if (!gMacPerl_AlwaysExtract)
3161 Perl_croak(aTHX_ "No Perl script found in input\n");
3163 if (PL_doextract) /* require explicit override ? */
3164 if (!OverrideExtract(PL_origfilename))
3165 Perl_croak(aTHX_ "User aborted script\n");
3167 PL_doextract = FALSE;
3169 /* Pater peccavi, file does not have #! */
3170 PerlIO_rewind(PL_rsfp);
3175 while (PL_doextract) {
3176 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
3177 Perl_croak(aTHX_ "No Perl script found in input\n");
3180 if (*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))) {
3181 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3182 PL_doextract = FALSE;
3183 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3185 while (*s == ' ' || *s == '\t') s++;
3187 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3188 if (strnEQ(s2-4,"perl",4))
3190 while ((s = moreswitches(s)))
3193 #ifdef MACOS_TRADITIONAL
3204 PL_uid = PerlProc_getuid();
3205 PL_euid = PerlProc_geteuid();
3206 PL_gid = PerlProc_getgid();
3207 PL_egid = PerlProc_getegid();
3209 PL_uid |= PL_gid << 16;
3210 PL_euid |= PL_egid << 16;
3212 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3216 S_forbid_setid(pTHX_ char *s)
3218 if (PL_euid != PL_uid)
3219 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3220 if (PL_egid != PL_gid)
3221 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
3225 Perl_init_debugger(pTHX)
3227 HV *ostash = PL_curstash;
3229 PL_curstash = PL_debstash;
3230 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3231 AvREAL_off(PL_dbargs);
3232 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3233 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3234 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
3235 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3236 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
3237 sv_setiv(PL_DBsingle, 0);
3238 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
3239 sv_setiv(PL_DBtrace, 0);
3240 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
3241 sv_setiv(PL_DBsignal, 0);
3242 PL_curstash = ostash;
3245 #ifndef STRESS_REALLOC
3246 #define REASONABLE(size) (size)
3248 #define REASONABLE(size) (1) /* unreasonable */
3252 Perl_init_stacks(pTHX)
3254 /* start with 128-item stack and 8K cxstack */
3255 PL_curstackinfo = new_stackinfo(REASONABLE(128),
3256 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3257 PL_curstackinfo->si_type = PERLSI_MAIN;
3258 PL_curstack = PL_curstackinfo->si_stack;
3259 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
3261 PL_stack_base = AvARRAY(PL_curstack);
3262 PL_stack_sp = PL_stack_base;
3263 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
3265 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3268 PL_tmps_max = REASONABLE(128);
3270 New(54,PL_markstack,REASONABLE(32),I32);
3271 PL_markstack_ptr = PL_markstack;
3272 PL_markstack_max = PL_markstack + REASONABLE(32);
3276 New(54,PL_scopestack,REASONABLE(32),I32);
3277 PL_scopestack_ix = 0;
3278 PL_scopestack_max = REASONABLE(32);
3280 New(54,PL_savestack,REASONABLE(128),ANY);
3281 PL_savestack_ix = 0;
3282 PL_savestack_max = REASONABLE(128);
3284 New(54,PL_retstack,REASONABLE(16),OP*);
3286 PL_retstack_max = REASONABLE(16);
3294 while (PL_curstackinfo->si_next)
3295 PL_curstackinfo = PL_curstackinfo->si_next;
3296 while (PL_curstackinfo) {
3297 PERL_SI *p = PL_curstackinfo->si_prev;
3298 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3299 Safefree(PL_curstackinfo->si_cxstack);
3300 Safefree(PL_curstackinfo);
3301 PL_curstackinfo = p;
3303 Safefree(PL_tmps_stack);
3304 Safefree(PL_markstack);
3305 Safefree(PL_scopestack);
3306 Safefree(PL_savestack);
3307 Safefree(PL_retstack);
3316 lex_start(PL_linestr);
3318 PL_subname = newSVpvn("main",4);
3322 S_init_predump_symbols(pTHX)
3327 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3328 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3329 GvMULTI_on(PL_stdingv);
3330 io = GvIOp(PL_stdingv);
3331 IoTYPE(io) = IoTYPE_RDONLY;
3332 IoIFP(io) = PerlIO_stdin();
3333 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
3335 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3337 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
3340 IoTYPE(io) = IoTYPE_WRONLY;
3341 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
3343 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
3345 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3347 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3348 GvMULTI_on(PL_stderrgv);
3349 io = GvIOp(PL_stderrgv);
3350 IoTYPE(io) = IoTYPE_WRONLY;
3351 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
3352 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
3354 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3356 PL_statname = NEWSV(66,0); /* last filename we did stat on */
3359 Safefree(PL_osname);
3360 PL_osname = savepv(OSNAME);
3364 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
3369 #ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3370 char **dup_env_base = 0;
3371 int dup_env_count = 0;
3374 argc--,argv++; /* skip name of script */
3375 if (PL_doswitches) {
3376 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3379 if (argv[0][1] == '-' && !argv[0][2]) {
3383 if ((s = strchr(argv[0], '='))) {
3385 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
3388 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
3391 PL_toptarget = NEWSV(0,0);
3392 sv_upgrade(PL_toptarget, SVt_PVFM);
3393 sv_setpvn(PL_toptarget, "", 0);
3394 PL_bodytarget = NEWSV(0,0);
3395 sv_upgrade(PL_bodytarget, SVt_PVFM);
3396 sv_setpvn(PL_bodytarget, "", 0);
3397 PL_formtarget = PL_bodytarget;
3400 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
3401 #ifdef MACOS_TRADITIONAL
3402 /* $0 is not majick on a Mac */
3403 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3405 sv_setpv(GvSV(tmpgv),PL_origfilename);
3406 magicname("0", "0", 1);
3409 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV)))
3411 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
3413 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
3415 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3416 GvMULTI_on(PL_argvgv);
3417 (void)gv_AVadd(PL_argvgv);
3418 av_clear(GvAVn(PL_argvgv));
3419 for (; argc > 0; argc--,argv++) {
3420 SV *sv = newSVpv(argv[0],0);
3421 av_push(GvAVn(PL_argvgv),sv);
3422 if (PL_widesyscalls)
3423 (void)sv_utf8_decode(sv);
3426 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
3428 GvMULTI_on(PL_envgv);
3429 hv = GvHVn(PL_envgv);
3430 hv_magic(hv, Nullgv, PERL_MAGIC_env);
3431 #ifdef USE_ENVIRON_ARRAY
3432 /* Note that if the supplied env parameter is actually a copy
3433 of the global environ then it may now point to free'd memory
3434 if the environment has been modified since. To avoid this
3435 problem we treat env==NULL as meaning 'use the default'
3440 environ[0] = Nullch;
3441 #ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3444 for (env_base = env; *env; env++)
3446 if ((dup_env_base = (char **)
3447 safesysmalloc( sizeof(char *) * (dup_env_count+1) ))) {
3449 for (env = env_base, dup_env = dup_env_base;
3452 /* With environ one needs to use safesysmalloc(). */
3453 *dup_env = safesysmalloc(strlen(*env) + 1);
3454 (void)strcpy(*dup_env, *env);
3460 #endif /* NEED_ENVIRON_DUP_FOR_MODIFY */
3462 for (; *env; env++) {
3463 if (!(s = strchr(*env,'=')))
3469 sv = newSVpv(s--,0);
3470 (void)hv_store(hv, *env, s - *env, sv, 0);
3473 #ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3476 for (dup_env = dup_env_base; *dup_env; dup_env++)
3477 safesysfree(*dup_env);
3478 safesysfree(dup_env_base);
3480 #endif /* NEED_ENVIRON_DUP_FOR_MODIFY */
3481 #endif /* USE_ENVIRON_ARRAY */
3484 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
3485 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
3489 S_init_perllib(pTHX)
3494 s = PerlEnv_getenv("PERL5LIB");
3496 incpush(s, TRUE, TRUE);
3498 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE);
3500 /* Treat PERL5?LIB as a possible search list logical name -- the
3501 * "natural" VMS idiom for a Unix path string. We allow each
3502 * element to be a set of |-separated directories for compatibility.
3506 if (my_trnlnm("PERL5LIB",buf,0))
3507 do { incpush(buf,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
3509 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE);
3513 /* Use the ~-expanded versions of APPLLIB (undocumented),
3514 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
3517 incpush(APPLLIB_EXP, TRUE, TRUE);
3521 incpush(ARCHLIB_EXP, FALSE, FALSE);
3523 #ifdef MACOS_TRADITIONAL
3525 struct stat tmpstatbuf;
3526 SV * privdir = NEWSV(55, 0);
3527 char * macperl = PerlEnv_getenv("MACPERL");
3532 Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl);
3533 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3534 incpush(SvPVX(privdir), TRUE, FALSE);
3535 Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl);
3536 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3537 incpush(SvPVX(privdir), TRUE, FALSE);
3539 SvREFCNT_dec(privdir);
3542 incpush(":", FALSE, FALSE);
3545 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
3548 incpush(PRIVLIB_EXP, TRUE, FALSE);
3550 incpush(PRIVLIB_EXP, FALSE, FALSE);
3554 /* sitearch is always relative to sitelib on Windows for
3555 * DLL-based path intuition to work correctly */
3556 # if !defined(WIN32)
3557 incpush(SITEARCH_EXP, FALSE, FALSE);
3563 incpush(SITELIB_EXP, TRUE, FALSE); /* this picks up sitearch as well */
3565 incpush(SITELIB_EXP, FALSE, FALSE);
3569 #ifdef SITELIB_STEM /* Search for version-specific dirs below here */
3570 incpush(SITELIB_STEM, FALSE, TRUE);
3573 #ifdef PERL_VENDORARCH_EXP
3574 /* vendorarch is always relative to vendorlib on Windows for
3575 * DLL-based path intuition to work correctly */
3576 # if !defined(WIN32)
3577 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE);
3581 #ifdef PERL_VENDORLIB_EXP
3583 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE); /* this picks up vendorarch as well */
3585 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE);
3589 #ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
3590 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE);
3593 #ifdef PERL_OTHERLIBDIRS
3594 incpush(PERL_OTHERLIBDIRS, TRUE, TRUE);
3598 incpush(".", FALSE, FALSE);
3599 #endif /* MACOS_TRADITIONAL */
3602 #if defined(DOSISH) || defined(EPOC)
3603 # define PERLLIB_SEP ';'
3606 # define PERLLIB_SEP '|'
3608 # if defined(MACOS_TRADITIONAL)
3609 # define PERLLIB_SEP ','
3611 # define PERLLIB_SEP ':'
3615 #ifndef PERLLIB_MANGLE
3616 # define PERLLIB_MANGLE(s,n) (s)
3620 S_incpush(pTHX_ char *p, int addsubdirs, int addoldvers)
3622 SV *subdir = Nullsv;
3627 if (addsubdirs || addoldvers) {
3628 subdir = sv_newmortal();
3631 /* Break at all separators */
3633 SV *libdir = NEWSV(55,0);
3636 /* skip any consecutive separators */
3637 while ( *p == PERLLIB_SEP ) {
3638 /* Uncomment the next line for PATH semantics */
3639 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
3643 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
3644 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
3649 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
3650 p = Nullch; /* break out */
3652 #ifdef MACOS_TRADITIONAL
3653 if (!strchr(SvPVX(libdir), ':'))
3654 sv_insert(libdir, 0, 0, ":", 1);
3655 if (SvPVX(libdir)[SvCUR(libdir)-1] != ':')
3656 sv_catpv(libdir, ":");
3660 * BEFORE pushing libdir onto @INC we may first push version- and
3661 * archname-specific sub-directories.
3663 if (addsubdirs || addoldvers) {
3664 #ifdef PERL_INC_VERSION_LIST
3665 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
3666 const char *incverlist[] = { PERL_INC_VERSION_LIST };
3667 const char **incver;
3669 struct stat tmpstatbuf;
3674 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
3676 while (unix[len-1] == '/') len--; /* Cosmetic */
3677 sv_usepvn(libdir,unix,len);
3680 PerlIO_printf(Perl_error_log,
3681 "Failed to unixify @INC element \"%s\"\n",
3685 #ifdef MACOS_TRADITIONAL
3686 #define PERL_AV_SUFFIX_FMT ""
3687 #define PERL_ARCH_FMT "%s:"
3688 #define PERL_ARCH_FMT_PATH PERL_FS_VER_FMT PERL_AV_SUFFIX_FMT
3690 #define PERL_AV_SUFFIX_FMT "/"
3691 #define PERL_ARCH_FMT "/%s"
3692 #define PERL_ARCH_FMT_PATH PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT
3694 /* .../version/archname if -d .../version/archname */
3695 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH PERL_ARCH_FMT,
3697 (int)PERL_REVISION, (int)PERL_VERSION,
3698 (int)PERL_SUBVERSION, ARCHNAME);
3699 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3700 S_ISDIR(tmpstatbuf.st_mode))
3701 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3703 /* .../version if -d .../version */
3704 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH, libdir,
3705 (int)PERL_REVISION, (int)PERL_VERSION,
3706 (int)PERL_SUBVERSION);
3707 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3708 S_ISDIR(tmpstatbuf.st_mode))
3709 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3711 /* .../archname if -d .../archname */
3712 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, ARCHNAME);
3713 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3714 S_ISDIR(tmpstatbuf.st_mode))
3715 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3718 #ifdef PERL_INC_VERSION_LIST
3720 for (incver = incverlist; *incver; incver++) {
3721 /* .../xxx if -d .../xxx */
3722 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, *incver);
3723 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3724 S_ISDIR(tmpstatbuf.st_mode))
3725 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3731 /* finally push this lib directory on the end of @INC */
3732 av_push(GvAVn(PL_incgv), libdir);
3736 #ifdef USE_5005THREADS
3737 STATIC struct perl_thread *
3738 S_init_main_thread(pTHX)
3740 #if !defined(PERL_IMPLICIT_CONTEXT)
3741 struct perl_thread *thr;
3745 Newz(53, thr, 1, struct perl_thread);
3746 PL_curcop = &PL_compiling;
3747 thr->interp = PERL_GET_INTERP;
3748 thr->cvcache = newHV();
3749 thr->threadsv = newAV();
3750 /* thr->threadsvp is set when find_threadsv is called */
3751 thr->specific = newAV();
3752 thr->flags = THRf_R_JOINABLE;
3753 MUTEX_INIT(&thr->mutex);
3754 /* Handcraft thrsv similarly to mess_sv */
3755 New(53, PL_thrsv, 1, SV);
3756 Newz(53, xpv, 1, XPV);
3757 SvFLAGS(PL_thrsv) = SVt_PV;
3758 SvANY(PL_thrsv) = (void*)xpv;
3759 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
3760 SvPVX(PL_thrsv) = (char*)thr;
3761 SvCUR_set(PL_thrsv, sizeof(thr));
3762 SvLEN_set(PL_thrsv, sizeof(thr));
3763 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
3764 thr->oursv = PL_thrsv;
3765 PL_chopset = " \n-";
3768 MUTEX_LOCK(&PL_threads_mutex);
3774 MUTEX_UNLOCK(&PL_threads_mutex);
3776 #ifdef HAVE_THREAD_INTERN
3777 Perl_init_thread_intern(thr);
3780 #ifdef SET_THREAD_SELF
3781 SET_THREAD_SELF(thr);
3783 thr->self = pthread_self();
3784 #endif /* SET_THREAD_SELF */
3788 * These must come after the thread self setting
3789 * because sv_setpvn does SvTAINT and the taint
3790 * fields thread selfness being set.
3792 PL_toptarget = NEWSV(0,0);
3793 sv_upgrade(PL_toptarget, SVt_PVFM);
3794 sv_setpvn(PL_toptarget, "", 0);
3795 PL_bodytarget = NEWSV(0,0);
3796 sv_upgrade(PL_bodytarget, SVt_PVFM);
3797 sv_setpvn(PL_bodytarget, "", 0);
3798 PL_formtarget = PL_bodytarget;
3799 thr->errsv = newSVpvn("", 0);
3800 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
3803 PL_peepp = MEMBER_TO_FPTR(Perl_peep);
3804 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3805 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3806 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3807 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3808 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
3810 PL_reginterp_cnt = 0;
3814 #endif /* USE_5005THREADS */
3817 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
3820 line_t oldline = CopLINE(PL_curcop);
3826 while (AvFILL(paramList) >= 0) {
3827 cv = (CV*)av_shift(paramList);
3828 if (PL_savebegin && (paramList == PL_beginav)) {
3829 /* save PL_beginav for compiler */
3830 if (! PL_beginav_save)
3831 PL_beginav_save = newAV();
3832 av_push(PL_beginav_save, (SV*)cv);
3836 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3837 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_list_body), cv);
3843 #ifndef PERL_FLEXIBLE_EXCEPTIONS
3847 (void)SvPV(atsv, len);
3850 PL_curcop = &PL_compiling;
3851 CopLINE_set(PL_curcop, oldline);
3852 if (paramList == PL_beginav)
3853 sv_catpv(atsv, "BEGIN failed--compilation aborted");
3855 Perl_sv_catpvf(aTHX_ atsv,
3856 "%s failed--call queue aborted",
3857 paramList == PL_checkav ? "CHECK"
3858 : paramList == PL_initav ? "INIT"
3860 while (PL_scopestack_ix > oldscope)
3863 Perl_croak(aTHX_ "%s", SvPVx(atsv, n_a));
3870 /* my_exit() was called */
3871 while (PL_scopestack_ix > oldscope)
3874 PL_curstash = PL_defstash;
3875 PL_curcop = &PL_compiling;
3876 CopLINE_set(PL_curcop, oldline);
3878 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
3879 if (paramList == PL_beginav)
3880 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
3882 Perl_croak(aTHX_ "%s failed--call queue aborted",
3883 paramList == PL_checkav ? "CHECK"
3884 : paramList == PL_initav ? "INIT"
3891 PL_curcop = &PL_compiling;
3892 CopLINE_set(PL_curcop, oldline);
3895 PerlIO_printf(Perl_error_log, "panic: restartop\n");
3903 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3905 S_vcall_list_body(pTHX_ va_list args)
3907 CV *cv = va_arg(args, CV*);
3908 return call_list_body(cv);
3913 S_call_list_body(pTHX_ CV *cv)
3915 PUSHMARK(PL_stack_sp);
3916 call_sv((SV*)cv, G_EVAL|G_DISCARD);
3921 Perl_my_exit(pTHX_ U32 status)
3923 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
3924 thr, (unsigned long) status));
3933 STATUS_NATIVE_SET(status);
3940 Perl_my_failure_exit(pTHX)
3943 if (vaxc$errno & 1) {
3944 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
3945 STATUS_NATIVE_SET(44);
3948 if (!vaxc$errno && errno) /* unlikely */
3949 STATUS_NATIVE_SET(44);
3951 STATUS_NATIVE_SET(vaxc$errno);
3956 STATUS_POSIX_SET(errno);
3958 exitstatus = STATUS_POSIX >> 8;
3959 if (exitstatus & 255)
3960 STATUS_POSIX_SET(exitstatus);
3962 STATUS_POSIX_SET(255);
3969 S_my_exit_jump(pTHX)
3971 register PERL_CONTEXT *cx;
3976 SvREFCNT_dec(PL_e_script);
3977 PL_e_script = Nullsv;
3980 POPSTACK_TO(PL_mainstack);
3981 if (cxstack_ix >= 0) {
3984 POPBLOCK(cx,PL_curpm);
3992 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen)
3995 p = SvPVX(PL_e_script);
3996 nl = strchr(p, '\n');
3997 nl = (nl) ? nl+1 : SvEND(PL_e_script);
3999 filter_del(read_e_script);
4002 sv_catpvn(buf_sv, p, nl-p);
4003 sv_chop(PL_e_script, nl);