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(aTHX); /* 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);
287 #if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
288 _dyld_lookup_and_bind
289 ("__environ", (unsigned long *) &environ_pointer, NULL);
292 #ifdef USE_ENVIRON_ARRAY
293 PL_origenviron = environ;
300 =for apidoc perl_destruct
302 Shuts down a Perl interpreter. See L<perlembed>.
310 volatile int destruct_level; /* 0=none, 1=full, 2=full with checks */
312 #ifdef USE_5005THREADS
315 #endif /* USE_5005THREADS */
317 /* wait for all pseudo-forked children to finish */
318 PERL_WAIT_FOR_CHILDREN;
320 #ifdef USE_5005THREADS
322 /* Pass 1 on any remaining threads: detach joinables, join zombies */
324 MUTEX_LOCK(&PL_threads_mutex);
325 DEBUG_S(PerlIO_printf(Perl_debug_log,
326 "perl_destruct: waiting for %d threads...\n",
328 for (t = thr->next; t != thr; t = t->next) {
329 MUTEX_LOCK(&t->mutex);
330 switch (ThrSTATE(t)) {
333 DEBUG_S(PerlIO_printf(Perl_debug_log,
334 "perl_destruct: joining zombie %p\n", t));
335 ThrSETSTATE(t, THRf_DEAD);
336 MUTEX_UNLOCK(&t->mutex);
339 * The SvREFCNT_dec below may take a long time (e.g. av
340 * may contain an object scalar whose destructor gets
341 * called) so we have to unlock threads_mutex and start
344 MUTEX_UNLOCK(&PL_threads_mutex);
346 SvREFCNT_dec((SV*)av);
347 DEBUG_S(PerlIO_printf(Perl_debug_log,
348 "perl_destruct: joined zombie %p OK\n", t));
350 case THRf_R_JOINABLE:
351 DEBUG_S(PerlIO_printf(Perl_debug_log,
352 "perl_destruct: detaching thread %p\n", t));
353 ThrSETSTATE(t, THRf_R_DETACHED);
355 * We unlock threads_mutex and t->mutex in the opposite order
356 * from which we locked them just so that DETACH won't
357 * deadlock if it panics. It's only a breach of good style
358 * not a bug since they are unlocks not locks.
360 MUTEX_UNLOCK(&PL_threads_mutex);
362 MUTEX_UNLOCK(&t->mutex);
365 DEBUG_S(PerlIO_printf(Perl_debug_log,
366 "perl_destruct: ignoring %p (state %u)\n",
368 MUTEX_UNLOCK(&t->mutex);
369 /* fall through and out */
372 /* We leave the above "Pass 1" loop with threads_mutex still locked */
374 /* Pass 2 on remaining threads: wait for the thread count to drop to one */
375 while (PL_nthreads > 1)
377 DEBUG_S(PerlIO_printf(Perl_debug_log,
378 "perl_destruct: final wait for %d threads\n",
380 COND_WAIT(&PL_nthreads_cond, &PL_threads_mutex);
382 /* At this point, we're the last thread */
383 MUTEX_UNLOCK(&PL_threads_mutex);
384 DEBUG_S(PerlIO_printf(Perl_debug_log, "perl_destruct: armageddon has arrived\n"));
385 MUTEX_DESTROY(&PL_threads_mutex);
386 COND_DESTROY(&PL_nthreads_cond);
388 #endif /* !defined(FAKE_THREADS) */
389 #endif /* USE_5005THREADS */
391 destruct_level = PL_perl_destruct_level;
395 if ((s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL"))) {
397 if (destruct_level < i)
404 if(PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
409 if (PL_endav && !PL_minus_c)
410 call_list(PL_scopestack_ix, PL_endav);
416 /* We must account for everything. */
418 /* Destroy the main CV and syntax tree */
420 PL_curpad = AvARRAY(PL_comppad);
421 op_free(PL_main_root);
422 PL_main_root = Nullop;
424 PL_curcop = &PL_compiling;
425 PL_main_start = Nullop;
426 SvREFCNT_dec(PL_main_cv);
430 /* Tell PerlIO we are about to tear things apart in case
431 we have layers which are using resources that should
435 PerlIO_destruct(aTHX);
437 if (PL_sv_objcount) {
439 * Try to destruct global references. We do this first so that the
440 * destructors and destructees still exist. Some sv's might remain.
441 * Non-referenced objects are on their own.
446 /* unhook hooks which will soon be, or use, destroyed data */
447 SvREFCNT_dec(PL_warnhook);
448 PL_warnhook = Nullsv;
449 SvREFCNT_dec(PL_diehook);
452 /* call exit list functions */
453 while (PL_exitlistlen-- > 0)
454 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
456 Safefree(PL_exitlist);
458 if (destruct_level == 0){
460 DEBUG_P(debprofdump());
462 /* The exit() function will do everything that needs doing. */
463 return STATUS_NATIVE_EXPORT;;
466 /* jettison our possibly duplicated environment */
468 #ifdef USE_ENVIRON_ARRAY
469 if (environ != PL_origenviron) {
472 for (i = 0; environ[i]; i++)
473 safesysfree(environ[i]);
475 /* Must use safesysfree() when working with environ. */
476 safesysfree(environ);
478 environ = PL_origenviron;
483 /* the syntax tree is shared between clones
484 * so op_free(PL_main_root) only ReREFCNT_dec's
485 * REGEXPs in the parent interpreter
486 * we need to manually ReREFCNT_dec for the clones
489 I32 i = AvFILLp(PL_regex_padav) + 1;
490 SV **ary = AvARRAY(PL_regex_padav);
494 REGEXP *re = INT2PTR(REGEXP *,SvIVX(resv));
496 if (SvFLAGS(resv) & SVf_BREAK) {
497 /* this is PL_reg_curpm, already freed
498 * flag is set in regexec.c:S_regtry
500 SvFLAGS(resv) &= ~SVf_BREAK;
502 else if(SvREPADTMP(resv)) {
503 SvREPADTMP_off(resv);
510 SvREFCNT_dec(PL_regex_padav);
511 PL_regex_padav = Nullav;
515 /* loosen bonds of global variables */
518 (void)PerlIO_close(PL_rsfp);
522 /* Filters for program text */
523 SvREFCNT_dec(PL_rsfp_filters);
524 PL_rsfp_filters = Nullav;
527 PL_preprocess = FALSE;
533 PL_doswitches = FALSE;
534 PL_dowarn = G_WARN_OFF;
535 PL_doextract = FALSE;
536 PL_sawampersand = FALSE; /* must save all match strings */
539 Safefree(PL_inplace);
541 SvREFCNT_dec(PL_patchlevel);
544 SvREFCNT_dec(PL_e_script);
545 PL_e_script = Nullsv;
548 while (--PL_origargc >= 0) {
549 Safefree(PL_origargv[PL_origargc]);
551 Safefree(PL_origargv);
553 /* magical thingies */
555 SvREFCNT_dec(PL_ofs_sv); /* $, */
558 SvREFCNT_dec(PL_ors_sv); /* $\ */
561 SvREFCNT_dec(PL_rs); /* $/ */
564 PL_multiline = 0; /* $* */
565 Safefree(PL_osname); /* $^O */
568 SvREFCNT_dec(PL_statname);
569 PL_statname = Nullsv;
572 /* defgv, aka *_ should be taken care of elsewhere */
574 /* clean up after study() */
575 SvREFCNT_dec(PL_lastscream);
576 PL_lastscream = Nullsv;
577 Safefree(PL_screamfirst);
579 Safefree(PL_screamnext);
583 Safefree(PL_efloatbuf);
584 PL_efloatbuf = Nullch;
587 /* startup and shutdown function lists */
588 SvREFCNT_dec(PL_beginav);
589 SvREFCNT_dec(PL_beginav_save);
590 SvREFCNT_dec(PL_endav);
591 SvREFCNT_dec(PL_checkav);
592 SvREFCNT_dec(PL_initav);
594 PL_beginav_save = Nullav;
599 /* shortcuts just get cleared */
605 PL_argvoutgv = Nullgv;
607 PL_stderrgv = Nullgv;
608 PL_last_in_gv = Nullgv;
610 PL_debstash = Nullhv;
612 /* reset so print() ends up where we expect */
615 SvREFCNT_dec(PL_argvout_stack);
616 PL_argvout_stack = Nullav;
618 SvREFCNT_dec(PL_modglobal);
619 PL_modglobal = Nullhv;
620 SvREFCNT_dec(PL_preambleav);
621 PL_preambleav = Nullav;
622 SvREFCNT_dec(PL_subname);
624 SvREFCNT_dec(PL_linestr);
626 SvREFCNT_dec(PL_pidstatus);
627 PL_pidstatus = Nullhv;
628 SvREFCNT_dec(PL_toptarget);
629 PL_toptarget = Nullsv;
630 SvREFCNT_dec(PL_bodytarget);
631 PL_bodytarget = Nullsv;
632 PL_formtarget = Nullsv;
634 /* free locale stuff */
635 #ifdef USE_LOCALE_COLLATE
636 Safefree(PL_collation_name);
637 PL_collation_name = Nullch;
640 #ifdef USE_LOCALE_NUMERIC
641 Safefree(PL_numeric_name);
642 PL_numeric_name = Nullch;
643 SvREFCNT_dec(PL_numeric_radix_sv);
646 /* clear utf8 character classes */
647 SvREFCNT_dec(PL_utf8_alnum);
648 SvREFCNT_dec(PL_utf8_alnumc);
649 SvREFCNT_dec(PL_utf8_ascii);
650 SvREFCNT_dec(PL_utf8_alpha);
651 SvREFCNT_dec(PL_utf8_space);
652 SvREFCNT_dec(PL_utf8_cntrl);
653 SvREFCNT_dec(PL_utf8_graph);
654 SvREFCNT_dec(PL_utf8_digit);
655 SvREFCNT_dec(PL_utf8_upper);
656 SvREFCNT_dec(PL_utf8_lower);
657 SvREFCNT_dec(PL_utf8_print);
658 SvREFCNT_dec(PL_utf8_punct);
659 SvREFCNT_dec(PL_utf8_xdigit);
660 SvREFCNT_dec(PL_utf8_mark);
661 SvREFCNT_dec(PL_utf8_toupper);
662 SvREFCNT_dec(PL_utf8_totitle);
663 SvREFCNT_dec(PL_utf8_tolower);
664 PL_utf8_alnum = Nullsv;
665 PL_utf8_alnumc = Nullsv;
666 PL_utf8_ascii = Nullsv;
667 PL_utf8_alpha = Nullsv;
668 PL_utf8_space = Nullsv;
669 PL_utf8_cntrl = Nullsv;
670 PL_utf8_graph = Nullsv;
671 PL_utf8_digit = Nullsv;
672 PL_utf8_upper = Nullsv;
673 PL_utf8_lower = Nullsv;
674 PL_utf8_print = Nullsv;
675 PL_utf8_punct = Nullsv;
676 PL_utf8_xdigit = Nullsv;
677 PL_utf8_mark = Nullsv;
678 PL_utf8_toupper = Nullsv;
679 PL_utf8_totitle = Nullsv;
680 PL_utf8_tolower = Nullsv;
682 if (!specialWARN(PL_compiling.cop_warnings))
683 SvREFCNT_dec(PL_compiling.cop_warnings);
684 PL_compiling.cop_warnings = Nullsv;
685 if (!specialCopIO(PL_compiling.cop_io))
686 SvREFCNT_dec(PL_compiling.cop_io);
687 PL_compiling.cop_io = Nullsv;
689 Safefree(CopFILE(&PL_compiling));
690 CopFILE(&PL_compiling) = Nullch;
691 Safefree(CopSTASHPV(&PL_compiling));
693 SvREFCNT_dec(CopFILEGV(&PL_compiling));
694 CopFILEGV(&PL_compiling) = Nullgv;
695 /* cop_stash is not refcounted */
698 /* Prepare to destruct main symbol table. */
703 SvREFCNT_dec(PL_curstname);
704 PL_curstname = Nullsv;
706 /* clear queued errors */
707 SvREFCNT_dec(PL_errors);
711 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
712 if (PL_scopestack_ix != 0)
713 Perl_warner(aTHX_ WARN_INTERNAL,
714 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
715 (long)PL_scopestack_ix);
716 if (PL_savestack_ix != 0)
717 Perl_warner(aTHX_ WARN_INTERNAL,
718 "Unbalanced saves: %ld more saves than restores\n",
719 (long)PL_savestack_ix);
720 if (PL_tmps_floor != -1)
721 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced tmps: %ld more allocs than frees\n",
722 (long)PL_tmps_floor + 1);
723 if (cxstack_ix != -1)
724 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced context: %ld more PUSHes than POPs\n",
725 (long)cxstack_ix + 1);
728 /* Now absolutely destruct everything, somehow or other, loops or no. */
729 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
730 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
732 /* the 2 is for PL_fdpid and PL_strtab */
733 while (PL_sv_count > 2 && sv_clean_all())
736 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
737 SvFLAGS(PL_fdpid) |= SVt_PVAV;
738 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
739 SvFLAGS(PL_strtab) |= SVt_PVHV;
741 AvREAL_off(PL_fdpid); /* no surviving entries */
742 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
745 #ifdef HAVE_INTERP_INTERN
749 /* Destruct the global string table. */
751 /* Yell and reset the HeVAL() slots that are still holding refcounts,
752 * so that sv_free() won't fail on them.
760 max = HvMAX(PL_strtab);
761 array = HvARRAY(PL_strtab);
764 if (hent && ckWARN_d(WARN_INTERNAL)) {
765 Perl_warner(aTHX_ WARN_INTERNAL,
766 "Unbalanced string table refcount: (%d) for \"%s\"",
767 HeVAL(hent) - Nullsv, HeKEY(hent));
768 HeVAL(hent) = Nullsv;
778 SvREFCNT_dec(PL_strtab);
781 /* free the pointer table used for cloning */
782 ptr_table_free(PL_ptr_table);
785 /* free special SVs */
787 SvREFCNT(&PL_sv_yes) = 0;
788 sv_clear(&PL_sv_yes);
789 SvANY(&PL_sv_yes) = NULL;
790 SvFLAGS(&PL_sv_yes) = 0;
792 SvREFCNT(&PL_sv_no) = 0;
794 SvANY(&PL_sv_no) = NULL;
795 SvFLAGS(&PL_sv_no) = 0;
797 SvREFCNT(&PL_sv_undef) = 0;
798 SvREADONLY_off(&PL_sv_undef);
800 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
801 Perl_warner(aTHX_ WARN_INTERNAL,"Scalars leaked: %ld\n", (long)PL_sv_count);
803 #if 1 && defined(PERLIO_LAYERS)
804 /* No more IO - including error messages ! */
805 PerlIO_cleanup(aTHX);
808 Safefree(PL_origfilename);
809 Safefree(PL_reg_start_tmp);
811 Safefree(PL_reg_curpm);
812 Safefree(PL_reg_poscache);
813 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
814 Safefree(PL_op_mask);
815 Safefree(PL_psig_ptr);
816 Safefree(PL_psig_name);
817 Safefree(PL_bitcount);
818 Safefree(PL_psig_pend);
820 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
822 DEBUG_P(debprofdump());
823 #ifdef USE_5005THREADS
824 MUTEX_DESTROY(&PL_strtab_mutex);
825 MUTEX_DESTROY(&PL_sv_mutex);
826 MUTEX_DESTROY(&PL_eval_mutex);
827 MUTEX_DESTROY(&PL_cred_mutex);
828 MUTEX_DESTROY(&PL_fdpid_mutex);
829 COND_DESTROY(&PL_eval_cond);
830 #ifdef EMULATE_ATOMIC_REFCOUNTS
831 MUTEX_DESTROY(&PL_svref_mutex);
832 #endif /* EMULATE_ATOMIC_REFCOUNTS */
834 /* As the penultimate thing, free the non-arena SV for thrsv */
835 Safefree(SvPVX(PL_thrsv));
836 Safefree(SvANY(PL_thrsv));
839 #endif /* USE_5005THREADS */
841 #ifdef USE_REENTRANT_API
842 Safefree(PL_reentrant_buffer->tmbuff);
843 Safefree(PL_reentrant_buffer);
848 /* As the absolutely last thing, free the non-arena SV for mess() */
851 /* it could have accumulated taint magic */
852 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
855 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
856 moremagic = mg->mg_moremagic;
857 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
859 Safefree(mg->mg_ptr);
863 /* we know that type >= SVt_PV */
864 (void)SvOOK_off(PL_mess_sv);
865 Safefree(SvPVX(PL_mess_sv));
866 Safefree(SvANY(PL_mess_sv));
867 Safefree(PL_mess_sv);
870 return STATUS_NATIVE_EXPORT;
874 =for apidoc perl_free
876 Releases a Perl interpreter. See L<perlembed>.
884 #if defined(WIN32) || defined(NETWARE)
885 # if defined(PERL_IMPLICIT_SYS)
887 void *host = nw_internal_host;
889 void *host = w32_internal_host;
892 if (PerlProc_lasthost()) {
900 nw5_delete_internal_host(host);
902 win32_delete_internal_host(host);
916 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
918 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
919 PL_exitlist[PL_exitlistlen].fn = fn;
920 PL_exitlist[PL_exitlistlen].ptr = ptr;
925 =for apidoc perl_parse
927 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
933 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
938 #ifdef USE_5005THREADS
942 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
945 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
946 setuid perl scripts securely.\n");
952 /* we copy rather than point to argv
953 * since perl_clone will copy and perl_destruct
954 * has no way of knowing if we've made a copy or
958 New(0, PL_origargv, i+1, char*);
959 PL_origargv[i] = '\0';
961 PL_origargv[i] = savepv(argv[i]);
969 /* Come here if running an undumped a.out. */
971 PL_origfilename = savepv(argv[0]);
972 PL_do_undump = FALSE;
973 cxstack_ix = -1; /* start label stack again */
975 init_postdump_symbols(argc,argv,env);
980 PL_curpad = AvARRAY(PL_comppad);
981 op_free(PL_main_root);
982 PL_main_root = Nullop;
984 PL_main_start = Nullop;
985 SvREFCNT_dec(PL_main_cv);
989 oldscope = PL_scopestack_ix;
990 PL_dowarn = G_WARN_OFF;
992 #ifdef PERL_FLEXIBLE_EXCEPTIONS
993 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
999 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1000 parse_body(env,xsinit);
1003 call_list(oldscope, PL_checkav);
1010 /* my_exit() was called */
1011 while (PL_scopestack_ix > oldscope)
1014 PL_curstash = PL_defstash;
1016 call_list(oldscope, PL_checkav);
1017 ret = STATUS_NATIVE_EXPORT;
1020 PerlIO_printf(Perl_error_log, "panic: top_env\n");
1028 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1030 S_vparse_body(pTHX_ va_list args)
1032 char **env = va_arg(args, char**);
1033 XSINIT_t xsinit = va_arg(args, XSINIT_t);
1035 return parse_body(env, xsinit);
1040 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
1042 int argc = PL_origargc;
1043 char **argv = PL_origargv;
1044 char *scriptname = NULL;
1046 VOL bool dosearch = FALSE;
1047 char *validarg = "";
1051 char *cddir = Nullch;
1053 sv_setpvn(PL_linestr,"",0);
1054 sv = newSVpvn("",0); /* first used for -I flags */
1058 for (argc--,argv++; argc > 0; argc--,argv++) {
1059 if (argv[0][0] != '-' || !argv[0][1])
1063 validarg = " PHOOEY ";
1072 win32_argv2utf8(argc-1, argv+1);
1075 #ifndef PERL_STRICT_CR
1099 if ((s = moreswitches(s)))
1109 #ifdef MACOS_TRADITIONAL
1110 /* ignore -e for Dev:Pseudo argument */
1111 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
1114 if (PL_euid != PL_uid || PL_egid != PL_gid)
1115 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
1117 PL_e_script = newSVpvn("",0);
1118 filter_add(read_e_script, NULL);
1121 sv_catpv(PL_e_script, s);
1123 sv_catpv(PL_e_script, argv[1]);
1127 Perl_croak(aTHX_ "No code specified for -e");
1128 sv_catpv(PL_e_script, "\n");
1131 case 'I': /* -I handled both here and in moreswitches() */
1133 if (!*++s && (s=argv[1]) != Nullch) {
1138 STRLEN len = strlen(s);
1139 p = savepvn(s, len);
1140 incpush(p, TRUE, TRUE);
1141 sv_catpvn(sv, "-I", 2);
1142 sv_catpvn(sv, p, len);
1143 sv_catpvn(sv, " ", 1);
1147 Perl_croak(aTHX_ "No directory specified for -I");
1151 PL_preprocess = TRUE;
1161 PL_preambleav = newAV();
1162 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
1164 PL_Sv = newSVpv("print myconfig();",0);
1166 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
1168 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
1170 sv_catpv(PL_Sv,"\" Compile-time options:");
1172 sv_catpv(PL_Sv," DEBUGGING");
1174 # ifdef MULTIPLICITY
1175 sv_catpv(PL_Sv," MULTIPLICITY");
1177 # ifdef USE_5005THREADS
1178 sv_catpv(PL_Sv," USE_5005THREADS");
1180 # ifdef USE_ITHREADS
1181 sv_catpv(PL_Sv," USE_ITHREADS");
1183 # ifdef USE_64_BIT_INT
1184 sv_catpv(PL_Sv," USE_64_BIT_INT");
1186 # ifdef USE_64_BIT_ALL
1187 sv_catpv(PL_Sv," USE_64_BIT_ALL");
1189 # ifdef USE_LONG_DOUBLE
1190 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1192 # ifdef USE_LARGE_FILES
1193 sv_catpv(PL_Sv," USE_LARGE_FILES");
1196 sv_catpv(PL_Sv," USE_SOCKS");
1198 # ifdef PERL_IMPLICIT_CONTEXT
1199 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1201 # ifdef PERL_IMPLICIT_SYS
1202 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1204 sv_catpv(PL_Sv,"\\n\",");
1206 #if defined(LOCAL_PATCH_COUNT)
1207 if (LOCAL_PATCH_COUNT > 0) {
1209 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
1210 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1211 if (PL_localpatches[i])
1212 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
1216 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
1219 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
1221 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
1224 sv_catpv(PL_Sv, "; \
1226 @env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; ");
1229 push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
1232 print \" \\%ENV:\\n @env\\n\" if @env; \
1233 print \" \\@INC:\\n @INC\\n\";");
1236 PL_Sv = newSVpv("config_vars(qw(",0);
1237 sv_catpv(PL_Sv, ++s);
1238 sv_catpv(PL_Sv, "))");
1241 av_push(PL_preambleav, PL_Sv);
1242 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1245 PL_doextract = TRUE;
1253 if (!*++s || isSPACE(*s)) {
1257 /* catch use of gnu style long options */
1258 if (strEQ(s, "version")) {
1262 if (strEQ(s, "help")) {
1269 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1275 #ifndef SECURE_INTERNAL_GETENV
1278 (s = PerlEnv_getenv("PERL5OPT")))
1283 if (*s == '-' && *(s+1) == 'T')
1286 char *popt_copy = Nullch;
1299 if (!strchr("DIMUdmw", *s))
1300 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
1304 popt_copy = SvPVX(sv_2mortal(newSVpv(popt,0)));
1305 s = popt_copy + (s - popt);
1306 d = popt_copy + (d - popt);
1318 scriptname = argv[0];
1321 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1323 else if (scriptname == Nullch) {
1325 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1333 open_script(scriptname,dosearch,sv,&fdscript);
1335 validate_suid(validarg, scriptname,fdscript);
1338 #if defined(SIGCHLD) || defined(SIGCLD)
1341 # define SIGCHLD SIGCLD
1343 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1344 if (sigstate == SIG_IGN) {
1345 if (ckWARN(WARN_SIGNAL))
1346 Perl_warner(aTHX_ WARN_SIGNAL,
1347 "Can't ignore signal CHLD, forcing to default");
1348 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1354 #ifdef MACOS_TRADITIONAL
1355 if (PL_doextract || gMacPerl_AlwaysExtract) {
1360 if (cddir && PerlDir_chdir(cddir) < 0)
1361 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1365 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1366 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1367 CvUNIQUE_on(PL_compcv);
1369 PL_comppad = newAV();
1370 av_push(PL_comppad, Nullsv);
1371 PL_curpad = AvARRAY(PL_comppad);
1372 PL_comppad_name = newAV();
1373 PL_comppad_name_fill = 0;
1374 PL_min_intro_pending = 0;
1376 #ifdef USE_5005THREADS
1377 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
1378 PL_curpad[0] = (SV*)newAV();
1379 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1380 CvOWNER(PL_compcv) = 0;
1381 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1382 MUTEX_INIT(CvMUTEXP(PL_compcv));
1383 #endif /* USE_5005THREADS */
1385 comppadlist = newAV();
1386 AvREAL_off(comppadlist);
1387 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1388 av_store(comppadlist, 1, (SV*)PL_comppad);
1389 CvPADLIST(PL_compcv) = comppadlist;
1392 boot_core_UNIVERSAL();
1394 boot_core_xsutils();
1398 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
1400 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
1406 # ifdef HAS_SOCKS5_INIT
1407 socks5_init(argv[0]);
1413 init_predump_symbols();
1414 /* init_postdump_symbols not currently designed to be called */
1415 /* more than once (ENV isn't cleared first, for example) */
1416 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
1418 init_postdump_symbols(argc,argv,env);
1422 /* now parse the script */
1424 SETERRNO(0,SS$_NORMAL);
1426 #ifdef MACOS_TRADITIONAL
1427 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1429 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1431 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1432 MacPerl_MPWFileName(PL_origfilename));
1436 if (yyparse() || PL_error_count) {
1438 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
1440 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1445 CopLINE_set(PL_curcop, 0);
1446 PL_curstash = PL_defstash;
1447 PL_preprocess = FALSE;
1449 SvREFCNT_dec(PL_e_script);
1450 PL_e_script = Nullsv;
1454 Not sure that this is still the right place to do this now that we
1455 no longer use PL_nrs. HVDS 2001/09/09
1457 sv_setsv(get_sv("/", TRUE), PL_rs);
1463 SAVECOPFILE(PL_curcop);
1464 SAVECOPLINE(PL_curcop);
1465 gv_check(PL_defstash);
1472 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1473 dump_mstats("after compilation:");
1482 =for apidoc perl_run
1484 Tells a Perl interpreter to run. See L<perlembed>.
1495 #ifdef USE_5005THREADS
1499 oldscope = PL_scopestack_ix;
1504 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1506 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1512 cxstack_ix = -1; /* start context stack again */
1514 case 0: /* normal completion */
1515 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1520 case 2: /* my_exit() */
1521 while (PL_scopestack_ix > oldscope)
1524 PL_curstash = PL_defstash;
1525 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
1526 PL_endav && !PL_minus_c)
1527 call_list(oldscope, PL_endav);
1529 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1530 dump_mstats("after execution: ");
1532 ret = STATUS_NATIVE_EXPORT;
1536 POPSTACK_TO(PL_mainstack);
1539 PerlIO_printf(Perl_error_log, "panic: restartop\n");
1549 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1551 S_vrun_body(pTHX_ va_list args)
1553 I32 oldscope = va_arg(args, I32);
1555 return run_body(oldscope);
1561 S_run_body(pTHX_ I32 oldscope)
1563 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
1564 PL_sawampersand ? "Enabling" : "Omitting"));
1566 if (!PL_restartop) {
1567 DEBUG_x(dump_all());
1568 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
1569 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1573 #ifdef MACOS_TRADITIONAL
1574 PerlIO_printf(Perl_error_log, "# %s syntax OK\n", MacPerl_MPWFileName(PL_origfilename));
1576 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
1580 if (PERLDB_SINGLE && PL_DBsingle)
1581 sv_setiv(PL_DBsingle, 1);
1583 call_list(oldscope, PL_initav);
1589 PL_op = PL_restartop;
1593 else if (PL_main_start) {
1594 CvDEPTH(PL_main_cv) = 1;
1595 PL_op = PL_main_start;
1605 =for apidoc p||get_sv
1607 Returns the SV of the specified Perl scalar. If C<create> is set and the
1608 Perl variable does not exist then it will be created. If C<create> is not
1609 set and the variable does not exist then NULL is returned.
1615 Perl_get_sv(pTHX_ const char *name, I32 create)
1618 #ifdef USE_5005THREADS
1619 if (name[1] == '\0' && !isALPHA(name[0])) {
1620 PADOFFSET tmp = find_threadsv(name);
1621 if (tmp != NOT_IN_PAD)
1622 return THREADSV(tmp);
1624 #endif /* USE_5005THREADS */
1625 gv = gv_fetchpv(name, create, SVt_PV);
1632 =for apidoc p||get_av
1634 Returns the AV of the specified Perl array. If C<create> is set and the
1635 Perl variable does not exist then it will be created. If C<create> is not
1636 set and the variable does not exist then NULL is returned.
1642 Perl_get_av(pTHX_ const char *name, I32 create)
1644 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1653 =for apidoc p||get_hv
1655 Returns the HV of the specified Perl hash. If C<create> is set and the
1656 Perl variable does not exist then it will be created. If C<create> is not
1657 set and the variable does not exist then NULL is returned.
1663 Perl_get_hv(pTHX_ const char *name, I32 create)
1665 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1674 =for apidoc p||get_cv
1676 Returns the CV of the specified Perl subroutine. If C<create> is set and
1677 the Perl subroutine does not exist then it will be declared (which has the
1678 same effect as saying C<sub name;>). If C<create> is not set and the
1679 subroutine does not exist then NULL is returned.
1685 Perl_get_cv(pTHX_ const char *name, I32 create)
1687 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
1688 /* XXX unsafe for threads if eval_owner isn't held */
1689 /* XXX this is probably not what they think they're getting.
1690 * It has the same effect as "sub name;", i.e. just a forward
1692 if (create && !GvCVu(gv))
1693 return newSUB(start_subparse(FALSE, 0),
1694 newSVOP(OP_CONST, 0, newSVpv(name,0)),
1702 /* Be sure to refetch the stack pointer after calling these routines. */
1705 =for apidoc p||call_argv
1707 Performs a callback to the specified Perl sub. See L<perlcall>.
1713 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
1715 /* See G_* flags in cop.h */
1716 /* null terminated arg list */
1723 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
1728 return call_pv(sub_name, flags);
1732 =for apidoc p||call_pv
1734 Performs a callback to the specified Perl sub. See L<perlcall>.
1740 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
1741 /* name of the subroutine */
1742 /* See G_* flags in cop.h */
1744 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
1748 =for apidoc p||call_method
1750 Performs a callback to the specified Perl method. The blessed object must
1751 be on the stack. See L<perlcall>.
1757 Perl_call_method(pTHX_ const char *methname, I32 flags)
1758 /* name of the subroutine */
1759 /* See G_* flags in cop.h */
1761 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
1764 /* May be called with any of a CV, a GV, or an SV containing the name. */
1766 =for apidoc p||call_sv
1768 Performs a callback to the Perl sub whose name is in the SV. See
1775 Perl_call_sv(pTHX_ SV *sv, I32 flags)
1776 /* See G_* flags in cop.h */
1779 LOGOP myop; /* fake syntax tree node */
1782 volatile I32 retval = 0;
1784 bool oldcatch = CATCH_GET;
1789 if (flags & G_DISCARD) {
1794 Zero(&myop, 1, LOGOP);
1795 myop.op_next = Nullop;
1796 if (!(flags & G_NOARGS))
1797 myop.op_flags |= OPf_STACKED;
1798 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1799 (flags & G_ARRAY) ? OPf_WANT_LIST :
1804 EXTEND(PL_stack_sp, 1);
1805 *++PL_stack_sp = sv;
1807 oldscope = PL_scopestack_ix;
1809 if (PERLDB_SUB && PL_curstash != PL_debstash
1810 /* Handle first BEGIN of -d. */
1811 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
1812 /* Try harder, since this may have been a sighandler, thus
1813 * curstash may be meaningless. */
1814 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
1815 && !(flags & G_NODEBUG))
1816 PL_op->op_private |= OPpENTERSUB_DB;
1818 if (flags & G_METHOD) {
1819 Zero(&method_op, 1, UNOP);
1820 method_op.op_next = PL_op;
1821 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1822 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
1823 PL_op = (OP*)&method_op;
1826 if (!(flags & G_EVAL)) {
1828 call_body((OP*)&myop, FALSE);
1829 retval = PL_stack_sp - (PL_stack_base + oldmark);
1830 CATCH_SET(oldcatch);
1833 myop.op_other = (OP*)&myop;
1835 /* we're trying to emulate pp_entertry() here */
1837 register PERL_CONTEXT *cx;
1838 I32 gimme = GIMME_V;
1843 push_return(Nullop);
1844 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
1846 PL_eval_root = PL_op; /* Only needed so that goto works right. */
1848 PL_in_eval = EVAL_INEVAL;
1849 if (flags & G_KEEPERR)
1850 PL_in_eval |= EVAL_KEEPERR;
1856 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1858 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1865 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1867 call_body((OP*)&myop, FALSE);
1869 retval = PL_stack_sp - (PL_stack_base + oldmark);
1870 if (!(flags & G_KEEPERR))
1877 /* my_exit() was called */
1878 PL_curstash = PL_defstash;
1881 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1882 Perl_croak(aTHX_ "Callback called exit");
1887 PL_op = PL_restartop;
1891 PL_stack_sp = PL_stack_base + oldmark;
1892 if (flags & G_ARRAY)
1896 *++PL_stack_sp = &PL_sv_undef;
1901 if (PL_scopestack_ix > oldscope) {
1905 register PERL_CONTEXT *cx;
1917 if (flags & G_DISCARD) {
1918 PL_stack_sp = PL_stack_base + oldmark;
1927 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1929 S_vcall_body(pTHX_ va_list args)
1931 OP *myop = va_arg(args, OP*);
1932 int is_eval = va_arg(args, int);
1934 call_body(myop, is_eval);
1940 S_call_body(pTHX_ OP *myop, int is_eval)
1942 if (PL_op == myop) {
1944 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
1946 PL_op = Perl_pp_entersub(aTHX); /* this does */
1952 /* Eval a string. The G_EVAL flag is always assumed. */
1955 =for apidoc p||eval_sv
1957 Tells Perl to C<eval> the string in the SV.
1963 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
1965 /* See G_* flags in cop.h */
1968 UNOP myop; /* fake syntax tree node */
1969 volatile I32 oldmark = SP - PL_stack_base;
1970 volatile I32 retval = 0;
1976 if (flags & G_DISCARD) {
1983 Zero(PL_op, 1, UNOP);
1984 EXTEND(PL_stack_sp, 1);
1985 *++PL_stack_sp = sv;
1986 oldscope = PL_scopestack_ix;
1988 if (!(flags & G_NOARGS))
1989 myop.op_flags = OPf_STACKED;
1990 myop.op_next = Nullop;
1991 myop.op_type = OP_ENTEREVAL;
1992 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1993 (flags & G_ARRAY) ? OPf_WANT_LIST :
1995 if (flags & G_KEEPERR)
1996 myop.op_flags |= OPf_SPECIAL;
1998 #ifdef PERL_FLEXIBLE_EXCEPTIONS
2000 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
2007 #ifndef PERL_FLEXIBLE_EXCEPTIONS
2009 call_body((OP*)&myop,TRUE);
2011 retval = PL_stack_sp - (PL_stack_base + oldmark);
2012 if (!(flags & G_KEEPERR))
2019 /* my_exit() was called */
2020 PL_curstash = PL_defstash;
2023 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
2024 Perl_croak(aTHX_ "Callback called exit");
2029 PL_op = PL_restartop;
2033 PL_stack_sp = PL_stack_base + oldmark;
2034 if (flags & G_ARRAY)
2038 *++PL_stack_sp = &PL_sv_undef;
2044 if (flags & G_DISCARD) {
2045 PL_stack_sp = PL_stack_base + oldmark;
2055 =for apidoc p||eval_pv
2057 Tells Perl to C<eval> the given string and return an SV* result.
2063 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
2066 SV* sv = newSVpv(p, 0);
2068 eval_sv(sv, G_SCALAR);
2075 if (croak_on_error && SvTRUE(ERRSV)) {
2077 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
2083 /* Require a module. */
2086 =for apidoc p||require_pv
2088 Tells Perl to C<require> the file named by the string argument. It is
2089 analogous to the Perl code C<eval "require '$file'">. It's even
2090 implemented that way; consider using Perl_load_module instead.
2095 Perl_require_pv(pTHX_ const char *pv)
2099 PUSHSTACKi(PERLSI_REQUIRE);
2101 sv = sv_newmortal();
2102 sv_setpv(sv, "require '");
2105 eval_sv(sv, G_DISCARD);
2111 Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
2115 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
2116 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
2120 S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
2122 /* This message really ought to be max 23 lines.
2123 * Removed -h because the user already knows that option. Others? */
2125 static char *usage_msg[] = {
2126 "-0[octal] specify record separator (\\0, if no argument)",
2127 "-a autosplit mode with -n or -p (splits $_ into @F)",
2128 "-C enable native wide character system interfaces",
2129 "-c check syntax only (runs BEGIN and CHECK blocks)",
2130 "-d[:debugger] run program under debugger",
2131 "-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2132 "-e 'command' one line of program (several -e's allowed, omit programfile)",
2133 "-F/pattern/ split() pattern for -a switch (//'s are optional)",
2134 "-i[extension] edit <> files in place (makes backup if extension supplied)",
2135 "-Idirectory specify @INC/#include directory (several -I's allowed)",
2136 "-l[octal] enable line ending processing, specifies line terminator",
2137 "-[mM][-]module execute `use/no module...' before executing program",
2138 "-n assume 'while (<>) { ... }' loop around program",
2139 "-p assume loop like -n but print line also, like sed",
2140 "-P run program through C preprocessor before compilation",
2141 "-s enable rudimentary parsing for switches after programfile",
2142 "-S look for programfile using PATH environment variable",
2143 "-T enable tainting checks",
2144 "-u dump core after parsing program",
2145 "-U allow unsafe operations",
2146 "-v print version, subversion (includes VERY IMPORTANT perl info)",
2147 "-V[:variable] print configuration summary (or a single Config.pm variable)",
2148 "-w enable many useful warnings (RECOMMENDED)",
2149 "-W enable all warnings",
2150 "-X disable all warnings",
2151 "-x[directory] strip off text before #!perl line and perhaps cd to directory",
2155 char **p = usage_msg;
2157 PerlIO_printf(PerlIO_stdout(),
2158 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2161 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
2164 /* This routine handles any switches that can be given during run */
2167 Perl_moreswitches(pTHX_ char *s)
2177 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
2178 SvREFCNT_dec(PL_rs);
2179 if (rschar & ~((U8)~0))
2180 PL_rs = &PL_sv_undef;
2181 else if (!rschar && numlen >= 2)
2182 PL_rs = newSVpvn("", 0);
2185 PL_rs = newSVpvn(&ch, 1);
2190 PL_widesyscalls = TRUE;
2195 PL_splitstr = savepv(s + 1);
2209 /* The following permits -d:Mod to accepts arguments following an =
2210 in the fashion that -MSome::Mod does. */
2211 if (*s == ':' || *s == '=') {
2214 sv = newSVpv("use Devel::", 0);
2216 /* We now allow -d:Module=Foo,Bar */
2217 while(isALNUM(*s) || *s==':') ++s;
2219 sv_catpv(sv, start);
2221 sv_catpvn(sv, start, s-start);
2222 sv_catpv(sv, " split(/,/,q{");
2227 my_setenv("PERL5DB", SvPV(sv, PL_na));
2230 PL_perldb = PERLDB_ALL;
2238 if (isALPHA(s[1])) {
2239 /* if adding extra options, remember to update DEBUG_MASK */
2240 static char debopts[] = "psltocPmfrxuLHXDSTR";
2243 for (s++; *s && (d = strchr(debopts,*s)); s++)
2244 PL_debug |= 1 << (d - debopts);
2247 PL_debug = atoi(s+1);
2248 for (s++; isDIGIT(*s); s++) ;
2250 PL_debug |= DEBUG_TOP_FLAG;
2252 if (ckWARN_d(WARN_DEBUGGING))
2253 Perl_warner(aTHX_ WARN_DEBUGGING,
2254 "Recompile perl with -DDEBUGGING to use -D switch\n");
2255 for (s++; isALNUM(*s); s++) ;
2261 usage(PL_origargv[0]);
2265 Safefree(PL_inplace);
2266 PL_inplace = savepv(s+1);
2268 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
2271 if (*s == '-') /* Additional switches on #! line. */
2275 case 'I': /* -I handled both here and in parse_perl() */
2278 while (*s && isSPACE(*s))
2283 /* ignore trailing spaces (possibly followed by other switches) */
2285 for (e = p; *e && !isSPACE(*e); e++) ;
2289 } while (*p && *p != '-');
2290 e = savepvn(s, e-s);
2291 incpush(e, TRUE, TRUE);
2298 Perl_croak(aTHX_ "No directory specified for -I");
2304 SvREFCNT_dec(PL_ors_sv);
2309 PL_ors_sv = newSVpvn("\n",1);
2310 numlen = 3 + (*s == '0');
2311 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
2315 if (RsPARA(PL_rs)) {
2316 PL_ors_sv = newSVpvn("\n\n",2);
2319 PL_ors_sv = newSVsv(PL_rs);
2324 forbid_setid("-M"); /* XXX ? */
2327 forbid_setid("-m"); /* XXX ? */
2332 /* -M-foo == 'no foo' */
2333 if (*s == '-') { use = "no "; ++s; }
2334 sv = newSVpv(use,0);
2336 /* We allow -M'Module qw(Foo Bar)' */
2337 while(isALNUM(*s) || *s==':') ++s;
2339 sv_catpv(sv, start);
2340 if (*(start-1) == 'm') {
2342 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
2343 sv_catpv( sv, " ()");
2347 Perl_croak(aTHX_ "Module name required with -%c option",
2349 sv_catpvn(sv, start, s-start);
2350 sv_catpv(sv, " split(/,/,q{");
2356 PL_preambleav = newAV();
2357 av_push(PL_preambleav, sv);
2360 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
2372 PL_doswitches = TRUE;
2377 Perl_croak(aTHX_ "Too late for \"-T\" option");
2381 #ifdef MACOS_TRADITIONAL
2382 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2384 PL_do_undump = TRUE;
2393 PerlIO_printf(PerlIO_stdout(),
2394 Perl_form(aTHX_ "\nThis is perl, v%"VDf" built for %s",
2395 PL_patchlevel, ARCHNAME));
2397 /* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
2398 PerlIO_printf(PerlIO_stdout(),
2399 Perl_form(aTHX_ "\nThis is perl, version %vd\n", PL_patchlevel));
2400 PerlIO_printf(PerlIO_stdout(),
2401 Perl_form(aTHX_ " built under %s at %s %s\n",
2402 OSNAME, __DATE__, __TIME__));
2403 PerlIO_printf(PerlIO_stdout(),
2404 Perl_form(aTHX_ " OS Specific Release: %s\n",
2408 #if defined(LOCAL_PATCH_COUNT)
2409 if (LOCAL_PATCH_COUNT > 0)
2410 PerlIO_printf(PerlIO_stdout(),
2411 "\n(with %d registered patch%s, "
2412 "see perl -V for more detail)",
2413 (int)LOCAL_PATCH_COUNT,
2414 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
2417 PerlIO_printf(PerlIO_stdout(),
2418 "\n\nCopyright 1987-2001, Larry Wall\n");
2419 #ifdef MACOS_TRADITIONAL
2420 PerlIO_printf(PerlIO_stdout(),
2421 "\nMac OS port Copyright (c) 1991-2001, Matthias Neeracher\n");
2424 PerlIO_printf(PerlIO_stdout(),
2425 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
2428 PerlIO_printf(PerlIO_stdout(),
2429 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2430 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
2433 PerlIO_printf(PerlIO_stdout(),
2434 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2435 "Version 5 port Copyright (c) 1994-1999, Andreas Kaiser, Ilya Zakharevich\n");
2438 PerlIO_printf(PerlIO_stdout(),
2439 "atariST series port, ++jrb bammi@cadence.com\n");
2442 PerlIO_printf(PerlIO_stdout(),
2443 "BeOS port Copyright Tom Spindler, 1997-1999\n");
2446 PerlIO_printf(PerlIO_stdout(),
2447 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2001\n");
2450 PerlIO_printf(PerlIO_stdout(),
2451 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
2454 PerlIO_printf(PerlIO_stdout(),
2455 "Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n");
2458 PerlIO_printf(PerlIO_stdout(),
2459 "VM/ESA port by Neale Ferguson, 1998-1999\n");
2462 PerlIO_printf(PerlIO_stdout(),
2463 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
2466 PerlIO_printf(PerlIO_stdout(),
2467 "MiNT port by Guido Flohr, 1997-1999\n");
2470 PerlIO_printf(PerlIO_stdout(),
2471 "EPOC port by Olaf Flebbe, 1999-2000\n");
2474 printf("WINCE port by Rainer Keuchel, 2001\n");
2475 printf("Built on " __DATE__ " " __TIME__ "\n\n");
2478 #ifdef BINARY_BUILD_NOTICE
2479 BINARY_BUILD_NOTICE;
2481 PerlIO_printf(PerlIO_stdout(),
2483 Perl may be copied only under the terms of either the Artistic License or the\n\
2484 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
2485 Complete documentation for Perl, including FAQ lists, should be found on\n\
2486 this system using `man perl' or `perldoc perl'. If you have access to the\n\
2487 Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
2490 if (! (PL_dowarn & G_WARN_ALL_MASK))
2491 PL_dowarn |= G_WARN_ON;
2495 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
2496 PL_compiling.cop_warnings = pWARN_ALL ;
2500 PL_dowarn = G_WARN_ALL_OFF;
2501 PL_compiling.cop_warnings = pWARN_NONE ;
2506 if (s[1] == '-') /* Additional switches on #! line. */
2511 #if defined(WIN32) || !defined(PERL_STRICT_CR)
2517 #ifdef ALTERNATE_SHEBANG
2518 case 'S': /* OS/2 needs -S on "extproc" line. */
2526 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
2531 /* compliments of Tom Christiansen */
2533 /* unexec() can be found in the Gnu emacs distribution */
2534 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
2537 Perl_my_unexec(pTHX)
2545 prog = newSVpv(BIN_EXP, 0);
2546 sv_catpv(prog, "/perl");
2547 file = newSVpv(PL_origfilename, 0);
2548 sv_catpv(file, ".perldump");
2550 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2551 /* unexec prints msg to stderr in case of failure */
2552 PerlProc_exit(status);
2555 # include <lib$routines.h>
2556 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
2558 ABORT(); /* for use with undump */
2563 /* initialize curinterp */
2569 # define PERLVAR(var,type)
2570 # define PERLVARA(var,n,type)
2571 # if defined(PERL_IMPLICIT_CONTEXT)
2572 # if defined(USE_5005THREADS)
2573 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2574 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2575 # else /* !USE_5005THREADS */
2576 # define PERLVARI(var,type,init) aTHX->var = init;
2577 # define PERLVARIC(var,type,init) aTHX->var = init;
2578 # endif /* USE_5005THREADS */
2580 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2581 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2583 # include "intrpvar.h"
2584 # ifndef USE_5005THREADS
2585 # include "thrdvar.h"
2592 # define PERLVAR(var,type)
2593 # define PERLVARA(var,n,type)
2594 # define PERLVARI(var,type,init) PL_##var = init;
2595 # define PERLVARIC(var,type,init) PL_##var = init;
2596 # include "intrpvar.h"
2597 # ifndef USE_5005THREADS
2598 # include "thrdvar.h"
2609 S_init_main_stash(pTHX)
2615 PL_curstash = PL_defstash = newHV();
2616 PL_curstname = newSVpvn("main",4);
2617 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2618 SvREFCNT_dec(GvHV(gv));
2619 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
2621 HvNAME(PL_defstash) = savepv("main");
2622 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2623 GvMULTI_on(PL_incgv);
2624 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2625 GvMULTI_on(PL_hintgv);
2626 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2627 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2628 GvMULTI_on(PL_errgv);
2629 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2630 GvMULTI_on(PL_replgv);
2631 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
2632 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2633 sv_setpvn(ERRSV, "", 0);
2634 PL_curstash = PL_defstash;
2635 CopSTASH_set(&PL_compiling, PL_defstash);
2636 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
2637 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
2638 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
2639 /* We must init $/ before switches are processed. */
2640 sv_setpvn(get_sv("/", TRUE), "\n", 1);
2644 S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
2649 PL_origfilename = savepv("-e");
2652 /* if find_script() returns, it returns a malloc()-ed value */
2653 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
2655 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2656 char *s = scriptname + 8;
2657 *fdscript = atoi(s);
2661 scriptname = savepv(s + 1);
2662 Safefree(PL_origfilename);
2663 PL_origfilename = scriptname;
2669 Safefree(CopFILE(PL_curcop));
2671 SvREFCNT_dec(CopFILEGV(PL_curcop));
2673 CopFILE_set(PL_curcop, PL_origfilename);
2674 if (strEQ(PL_origfilename,"-"))
2676 if (*fdscript >= 0) {
2677 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
2678 #if defined(HAS_FCNTL) && defined(F_SETFD)
2680 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2683 else if (PL_preprocess) {
2684 char *cpp_cfg = CPPSTDIN;
2685 SV *cpp = newSVpvn("",0);
2686 SV *cmd = NEWSV(0,0);
2688 if (strEQ(cpp_cfg, "cppstdin"))
2689 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
2690 sv_catpv(cpp, cpp_cfg);
2692 sv_catpvn(sv, "-I", 2);
2693 sv_catpv(sv,PRIVLIB_EXP);
2695 DEBUG_P(PerlIO_printf(Perl_debug_log,
2696 "PL_preprocess: scriptname=\"%s\", cpp=\"%s\", sv=\"%s\", CPPMINUS=\"%s\"\n",
2697 scriptname, SvPVX (cpp), SvPVX (sv), CPPMINUS));
2698 #if defined(MSDOS) || defined(WIN32)
2699 Perl_sv_setpvf(aTHX_ cmd, "\
2700 sed %s -e \"/^[^#]/b\" \
2701 -e \"/^#[ ]*include[ ]/b\" \
2702 -e \"/^#[ ]*define[ ]/b\" \
2703 -e \"/^#[ ]*if[ ]/b\" \
2704 -e \"/^#[ ]*ifdef[ ]/b\" \
2705 -e \"/^#[ ]*ifndef[ ]/b\" \
2706 -e \"/^#[ ]*else/b\" \
2707 -e \"/^#[ ]*elif[ ]/b\" \
2708 -e \"/^#[ ]*undef[ ]/b\" \
2709 -e \"/^#[ ]*endif/b\" \
2711 %s | %"SVf" -C %"SVf" %s",
2712 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
2715 Perl_sv_setpvf(aTHX_ cmd, "\
2716 %s %s -e '/^[^#]/b' \
2717 -e '/^#[ ]*include[ ]/b' \
2718 -e '/^#[ ]*define[ ]/b' \
2719 -e '/^#[ ]*if[ ]/b' \
2720 -e '/^#[ ]*ifdef[ ]/b' \
2721 -e '/^#[ ]*ifndef[ ]/b' \
2722 -e '/^#[ ]*else/b' \
2723 -e '/^#[ ]*elif[ ]/b' \
2724 -e '/^#[ ]*undef[ ]/b' \
2725 -e '/^#[ ]*endif/b' \
2727 %s | %"SVf" %"SVf" %s",
2729 Perl_sv_setpvf(aTHX_ cmd, "\
2730 %s %s -e '/^[^#]/b' \
2731 -e '/^#[ ]*include[ ]/b' \
2732 -e '/^#[ ]*define[ ]/b' \
2733 -e '/^#[ ]*if[ ]/b' \
2734 -e '/^#[ ]*ifdef[ ]/b' \
2735 -e '/^#[ ]*ifndef[ ]/b' \
2736 -e '/^#[ ]*else/b' \
2737 -e '/^#[ ]*elif[ ]/b' \
2738 -e '/^#[ ]*undef[ ]/b' \
2739 -e '/^#[ ]*endif/b' \
2741 %s | %"SVf" -C %"SVf" %s",
2748 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
2750 scriptname, cpp, sv, CPPMINUS);
2751 PL_doextract = FALSE;
2752 #ifdef IAMSUID /* actually, this is caught earlier */
2753 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
2755 (void)seteuid(PL_uid); /* musn't stay setuid root */
2758 (void)setreuid((Uid_t)-1, PL_uid);
2760 #ifdef HAS_SETRESUID
2761 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
2763 PerlProc_setuid(PL_uid);
2767 if (PerlProc_geteuid() != PL_uid)
2768 Perl_croak(aTHX_ "Can't do seteuid!\n");
2770 #endif /* IAMSUID */
2771 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
2775 else if (!*scriptname) {
2776 forbid_setid("program input from stdin");
2777 PL_rsfp = PerlIO_stdin();
2780 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
2781 #if defined(HAS_FCNTL) && defined(F_SETFD)
2783 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2788 #ifndef IAMSUID /* in case script is not readable before setuid */
2790 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
2791 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2794 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
2795 (int)PERL_REVISION, (int)PERL_VERSION,
2796 (int)PERL_SUBVERSION), PL_origargv);
2797 Perl_croak(aTHX_ "Can't do setuid\n");
2803 Perl_croak(aTHX_ "Can't open perl script: %s\n",
2806 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
2807 CopFILE(PL_curcop), Strerror(errno));
2813 * I_SYSSTATVFS HAS_FSTATVFS
2815 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
2816 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2817 * here so that metaconfig picks them up. */
2821 S_fd_on_nosuid_fs(pTHX_ int fd)
2823 int check_okay = 0; /* able to do all the required sys/libcalls */
2824 int on_nosuid = 0; /* the fd is on a nosuid fs */
2826 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
2827 * fstatvfs() is UNIX98.
2828 * fstatfs() is 4.3 BSD.
2829 * ustat()+getmnt() is pre-4.3 BSD.
2830 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2831 * an irrelevant filesystem while trying to reach the right one.
2834 #undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2836 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2837 defined(HAS_FSTATVFS)
2838 # define FD_ON_NOSUID_CHECK_OKAY
2839 struct statvfs stfs;
2841 check_okay = fstatvfs(fd, &stfs) == 0;
2842 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
2843 # endif /* fstatvfs */
2845 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2846 defined(PERL_MOUNT_NOSUID) && \
2847 defined(HAS_FSTATFS) && \
2848 defined(HAS_STRUCT_STATFS) && \
2849 defined(HAS_STRUCT_STATFS_F_FLAGS)
2850 # define FD_ON_NOSUID_CHECK_OKAY
2853 check_okay = fstatfs(fd, &stfs) == 0;
2854 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
2855 # endif /* fstatfs */
2857 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2858 defined(PERL_MOUNT_NOSUID) && \
2859 defined(HAS_FSTAT) && \
2860 defined(HAS_USTAT) && \
2861 defined(HAS_GETMNT) && \
2862 defined(HAS_STRUCT_FS_DATA) && \
2864 # define FD_ON_NOSUID_CHECK_OKAY
2867 if (fstat(fd, &fdst) == 0) {
2869 if (ustat(fdst.st_dev, &us) == 0) {
2871 /* NOSTAT_ONE here because we're not examining fields which
2872 * vary between that case and STAT_ONE. */
2873 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
2874 size_t cmplen = sizeof(us.f_fname);
2875 if (sizeof(fsd.fd_req.path) < cmplen)
2876 cmplen = sizeof(fsd.fd_req.path);
2877 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2878 fdst.st_dev == fsd.fd_req.dev) {
2880 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2886 # endif /* fstat+ustat+getmnt */
2888 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2889 defined(HAS_GETMNTENT) && \
2890 defined(HAS_HASMNTOPT) && \
2891 defined(MNTOPT_NOSUID)
2892 # define FD_ON_NOSUID_CHECK_OKAY
2893 FILE *mtab = fopen("/etc/mtab", "r");
2894 struct mntent *entry;
2895 struct stat stb, fsb;
2897 if (mtab && (fstat(fd, &stb) == 0)) {
2898 while (entry = getmntent(mtab)) {
2899 if (stat(entry->mnt_dir, &fsb) == 0
2900 && fsb.st_dev == stb.st_dev)
2902 /* found the filesystem */
2904 if (hasmntopt(entry, MNTOPT_NOSUID))
2907 } /* A single fs may well fail its stat(). */
2912 # endif /* getmntent+hasmntopt */
2915 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
2918 #endif /* IAMSUID */
2921 S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
2927 /* do we need to emulate setuid on scripts? */
2929 /* This code is for those BSD systems that have setuid #! scripts disabled
2930 * in the kernel because of a security problem. Merely defining DOSUID
2931 * in perl will not fix that problem, but if you have disabled setuid
2932 * scripts in the kernel, this will attempt to emulate setuid and setgid
2933 * on scripts that have those now-otherwise-useless bits set. The setuid
2934 * root version must be called suidperl or sperlN.NNN. If regular perl
2935 * discovers that it has opened a setuid script, it calls suidperl with
2936 * the same argv that it had. If suidperl finds that the script it has
2937 * just opened is NOT setuid root, it sets the effective uid back to the
2938 * uid. We don't just make perl setuid root because that loses the
2939 * effective uid we had before invoking perl, if it was different from the
2942 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2943 * be defined in suidperl only. suidperl must be setuid root. The
2944 * Configure script will set this up for you if you want it.
2950 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
2951 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
2952 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
2957 #ifndef HAS_SETREUID
2958 /* On this access check to make sure the directories are readable,
2959 * there is actually a small window that the user could use to make
2960 * filename point to an accessible directory. So there is a faint
2961 * chance that someone could execute a setuid script down in a
2962 * non-accessible directory. I don't know what to do about that.
2963 * But I don't think it's too important. The manual lies when
2964 * it says access() is useful in setuid programs.
2966 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
2967 Perl_croak(aTHX_ "Permission denied");
2969 /* If we can swap euid and uid, then we can determine access rights
2970 * with a simple stat of the file, and then compare device and
2971 * inode to make sure we did stat() on the same file we opened.
2972 * Then we just have to make sure he or she can execute it.
2975 struct stat tmpstatbuf;
2979 setreuid(PL_euid,PL_uid) < 0
2982 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
2985 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
2986 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
2987 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
2988 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
2989 #if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
2990 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
2991 Perl_croak(aTHX_ "Permission denied");
2993 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
2994 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
2995 (void)PerlIO_close(PL_rsfp);
2996 Perl_croak(aTHX_ "Permission denied\n");
3000 setreuid(PL_uid,PL_euid) < 0
3002 # if defined(HAS_SETRESUID)
3003 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
3006 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
3007 Perl_croak(aTHX_ "Can't reswap uid and euid");
3008 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
3009 Perl_croak(aTHX_ "Permission denied\n");
3011 #endif /* HAS_SETREUID */
3012 #endif /* IAMSUID */
3014 if (!S_ISREG(PL_statbuf.st_mode))
3015 Perl_croak(aTHX_ "Permission denied");
3016 if (PL_statbuf.st_mode & S_IWOTH)
3017 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
3018 PL_doswitches = FALSE; /* -s is insecure in suid */
3019 CopLINE_inc(PL_curcop);
3020 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
3021 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
3022 Perl_croak(aTHX_ "No #! line");
3023 s = SvPV(PL_linestr,n_a)+2;
3025 while (!isSPACE(*s)) s++;
3026 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
3027 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
3028 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
3029 Perl_croak(aTHX_ "Not a perl script");
3030 while (*s == ' ' || *s == '\t') s++;
3032 * #! arg must be what we saw above. They can invoke it by
3033 * mentioning suidperl explicitly, but they may not add any strange
3034 * arguments beyond what #! says if they do invoke suidperl that way.
3036 len = strlen(validarg);
3037 if (strEQ(validarg," PHOOEY ") ||
3038 strnNE(s,validarg,len) || !isSPACE(s[len]))
3039 Perl_croak(aTHX_ "Args must match #! line");
3042 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
3043 PL_euid == PL_statbuf.st_uid)
3045 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3046 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3047 #endif /* IAMSUID */
3049 if (PL_euid) { /* oops, we're not the setuid root perl */
3050 (void)PerlIO_close(PL_rsfp);
3053 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
3054 (int)PERL_REVISION, (int)PERL_VERSION,
3055 (int)PERL_SUBVERSION), PL_origargv);
3057 Perl_croak(aTHX_ "Can't do setuid\n");
3060 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
3062 (void)setegid(PL_statbuf.st_gid);
3065 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
3067 #ifdef HAS_SETRESGID
3068 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
3070 PerlProc_setgid(PL_statbuf.st_gid);
3074 if (PerlProc_getegid() != PL_statbuf.st_gid)
3075 Perl_croak(aTHX_ "Can't do setegid!\n");
3077 if (PL_statbuf.st_mode & S_ISUID) {
3078 if (PL_statbuf.st_uid != PL_euid)
3080 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
3083 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
3085 #ifdef HAS_SETRESUID
3086 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
3088 PerlProc_setuid(PL_statbuf.st_uid);
3092 if (PerlProc_geteuid() != PL_statbuf.st_uid)
3093 Perl_croak(aTHX_ "Can't do seteuid!\n");
3095 else if (PL_uid) { /* oops, mustn't run as root */
3097 (void)seteuid((Uid_t)PL_uid);
3100 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
3102 #ifdef HAS_SETRESUID
3103 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
3105 PerlProc_setuid((Uid_t)PL_uid);
3109 if (PerlProc_geteuid() != PL_uid)
3110 Perl_croak(aTHX_ "Can't do seteuid!\n");
3113 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
3114 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
3117 else if (PL_preprocess)
3118 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
3119 else if (fdscript >= 0)
3120 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
3122 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
3124 /* We absolutely must clear out any saved ids here, so we */
3125 /* exec the real perl, substituting fd script for scriptname. */
3126 /* (We pass script name as "subdir" of fd, which perl will grok.) */
3127 PerlIO_rewind(PL_rsfp);
3128 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
3129 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3130 if (!PL_origargv[which])
3131 Perl_croak(aTHX_ "Permission denied");
3132 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
3133 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
3134 #if defined(HAS_FCNTL) && defined(F_SETFD)
3135 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
3137 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
3138 (int)PERL_REVISION, (int)PERL_VERSION,
3139 (int)PERL_SUBVERSION), PL_origargv);/* try again */
3140 Perl_croak(aTHX_ "Can't do setuid\n");
3141 #endif /* IAMSUID */
3143 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
3144 #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
3145 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3146 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3148 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3151 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3152 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3153 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3154 /* not set-id, must be wrapped */
3160 S_find_beginning(pTHX)
3162 register char *s, *s2;
3164 /* skip forward in input to the real script? */
3167 #ifdef MACOS_TRADITIONAL
3168 /* Since the Mac OS does not honor #! arguments for us, we do it ourselves */
3170 while (PL_doextract || gMacPerl_AlwaysExtract) {
3171 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3172 if (!gMacPerl_AlwaysExtract)
3173 Perl_croak(aTHX_ "No Perl script found in input\n");
3175 if (PL_doextract) /* require explicit override ? */
3176 if (!OverrideExtract(PL_origfilename))
3177 Perl_croak(aTHX_ "User aborted script\n");
3179 PL_doextract = FALSE;
3181 /* Pater peccavi, file does not have #! */
3182 PerlIO_rewind(PL_rsfp);
3187 while (PL_doextract) {
3188 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
3189 Perl_croak(aTHX_ "No Perl script found in input\n");
3192 if (*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))) {
3193 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3194 PL_doextract = FALSE;
3195 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3197 while (*s == ' ' || *s == '\t') s++;
3199 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3200 if (strnEQ(s2-4,"perl",4))
3202 while ((s = moreswitches(s)))
3205 #ifdef MACOS_TRADITIONAL
3216 PL_uid = PerlProc_getuid();
3217 PL_euid = PerlProc_geteuid();
3218 PL_gid = PerlProc_getgid();
3219 PL_egid = PerlProc_getegid();
3221 PL_uid |= PL_gid << 16;
3222 PL_euid |= PL_egid << 16;
3224 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3228 S_forbid_setid(pTHX_ char *s)
3230 if (PL_euid != PL_uid)
3231 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3232 if (PL_egid != PL_gid)
3233 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
3237 Perl_init_debugger(pTHX)
3239 HV *ostash = PL_curstash;
3241 PL_curstash = PL_debstash;
3242 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3243 AvREAL_off(PL_dbargs);
3244 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3245 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3246 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
3247 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3248 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
3249 sv_setiv(PL_DBsingle, 0);
3250 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
3251 sv_setiv(PL_DBtrace, 0);
3252 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
3253 sv_setiv(PL_DBsignal, 0);
3254 PL_curstash = ostash;
3257 #ifndef STRESS_REALLOC
3258 #define REASONABLE(size) (size)
3260 #define REASONABLE(size) (1) /* unreasonable */
3264 Perl_init_stacks(pTHX)
3266 /* start with 128-item stack and 8K cxstack */
3267 PL_curstackinfo = new_stackinfo(REASONABLE(128),
3268 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3269 PL_curstackinfo->si_type = PERLSI_MAIN;
3270 PL_curstack = PL_curstackinfo->si_stack;
3271 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
3273 PL_stack_base = AvARRAY(PL_curstack);
3274 PL_stack_sp = PL_stack_base;
3275 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
3277 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3280 PL_tmps_max = REASONABLE(128);
3282 New(54,PL_markstack,REASONABLE(32),I32);
3283 PL_markstack_ptr = PL_markstack;
3284 PL_markstack_max = PL_markstack + REASONABLE(32);
3288 New(54,PL_scopestack,REASONABLE(32),I32);
3289 PL_scopestack_ix = 0;
3290 PL_scopestack_max = REASONABLE(32);
3292 New(54,PL_savestack,REASONABLE(128),ANY);
3293 PL_savestack_ix = 0;
3294 PL_savestack_max = REASONABLE(128);
3296 New(54,PL_retstack,REASONABLE(16),OP*);
3298 PL_retstack_max = REASONABLE(16);
3306 while (PL_curstackinfo->si_next)
3307 PL_curstackinfo = PL_curstackinfo->si_next;
3308 while (PL_curstackinfo) {
3309 PERL_SI *p = PL_curstackinfo->si_prev;
3310 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3311 Safefree(PL_curstackinfo->si_cxstack);
3312 Safefree(PL_curstackinfo);
3313 PL_curstackinfo = p;
3315 Safefree(PL_tmps_stack);
3316 Safefree(PL_markstack);
3317 Safefree(PL_scopestack);
3318 Safefree(PL_savestack);
3319 Safefree(PL_retstack);
3328 lex_start(PL_linestr);
3330 PL_subname = newSVpvn("main",4);
3334 S_init_predump_symbols(pTHX)
3339 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3340 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3341 GvMULTI_on(PL_stdingv);
3342 io = GvIOp(PL_stdingv);
3343 IoTYPE(io) = IoTYPE_RDONLY;
3344 IoIFP(io) = PerlIO_stdin();
3345 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
3347 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3349 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
3352 IoTYPE(io) = IoTYPE_WRONLY;
3353 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
3355 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
3357 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3359 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3360 GvMULTI_on(PL_stderrgv);
3361 io = GvIOp(PL_stderrgv);
3362 IoTYPE(io) = IoTYPE_WRONLY;
3363 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
3364 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
3366 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3368 PL_statname = NEWSV(66,0); /* last filename we did stat on */
3371 Safefree(PL_osname);
3372 PL_osname = savepv(OSNAME);
3376 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
3381 #ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3382 char **dup_env_base = 0;
3383 int dup_env_count = 0;
3386 argc--,argv++; /* skip name of script */
3387 if (PL_doswitches) {
3388 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3391 if (argv[0][1] == '-' && !argv[0][2]) {
3395 if ((s = strchr(argv[0], '='))) {
3397 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
3400 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
3403 PL_toptarget = NEWSV(0,0);
3404 sv_upgrade(PL_toptarget, SVt_PVFM);
3405 sv_setpvn(PL_toptarget, "", 0);
3406 PL_bodytarget = NEWSV(0,0);
3407 sv_upgrade(PL_bodytarget, SVt_PVFM);
3408 sv_setpvn(PL_bodytarget, "", 0);
3409 PL_formtarget = PL_bodytarget;
3412 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
3413 #ifdef MACOS_TRADITIONAL
3414 /* $0 is not majick on a Mac */
3415 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3417 sv_setpv(GvSV(tmpgv),PL_origfilename);
3418 magicname("0", "0", 1);
3421 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV)))
3423 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
3425 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
3427 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3428 GvMULTI_on(PL_argvgv);
3429 (void)gv_AVadd(PL_argvgv);
3430 av_clear(GvAVn(PL_argvgv));
3431 for (; argc > 0; argc--,argv++) {
3432 SV *sv = newSVpv(argv[0],0);
3433 av_push(GvAVn(PL_argvgv),sv);
3434 if (PL_widesyscalls)
3435 (void)sv_utf8_decode(sv);
3438 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
3440 GvMULTI_on(PL_envgv);
3441 hv = GvHVn(PL_envgv);
3442 hv_magic(hv, Nullgv, PERL_MAGIC_env);
3443 #ifdef USE_ENVIRON_ARRAY
3444 /* Note that if the supplied env parameter is actually a copy
3445 of the global environ then it may now point to free'd memory
3446 if the environment has been modified since. To avoid this
3447 problem we treat env==NULL as meaning 'use the default'
3452 environ[0] = Nullch;
3453 #ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3456 for (env_base = env; *env; env++)
3458 if ((dup_env_base = (char **)
3459 safesysmalloc( sizeof(char *) * (dup_env_count+1) ))) {
3461 for (env = env_base, dup_env = dup_env_base;
3464 /* With environ one needs to use safesysmalloc(). */
3465 *dup_env = safesysmalloc(strlen(*env) + 1);
3466 (void)strcpy(*dup_env, *env);
3472 #endif /* NEED_ENVIRON_DUP_FOR_MODIFY */
3474 for (; *env; env++) {
3475 if (!(s = strchr(*env,'=')))
3481 sv = newSVpv(s--,0);
3482 (void)hv_store(hv, *env, s - *env, sv, 0);
3485 #ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3488 for (dup_env = dup_env_base; *dup_env; dup_env++)
3489 safesysfree(*dup_env);
3490 safesysfree(dup_env_base);
3492 #endif /* NEED_ENVIRON_DUP_FOR_MODIFY */
3493 #endif /* USE_ENVIRON_ARRAY */
3496 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
3497 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
3501 S_init_perllib(pTHX)
3506 s = PerlEnv_getenv("PERL5LIB");
3508 incpush(s, TRUE, TRUE);
3510 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE);
3512 /* Treat PERL5?LIB as a possible search list logical name -- the
3513 * "natural" VMS idiom for a Unix path string. We allow each
3514 * element to be a set of |-separated directories for compatibility.
3518 if (my_trnlnm("PERL5LIB",buf,0))
3519 do { incpush(buf,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
3521 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE);
3525 /* Use the ~-expanded versions of APPLLIB (undocumented),
3526 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
3529 incpush(APPLLIB_EXP, TRUE, TRUE);
3533 incpush(ARCHLIB_EXP, FALSE, FALSE);
3535 #ifdef MACOS_TRADITIONAL
3537 struct stat tmpstatbuf;
3538 SV * privdir = NEWSV(55, 0);
3539 char * macperl = PerlEnv_getenv("MACPERL");
3544 Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl);
3545 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3546 incpush(SvPVX(privdir), TRUE, FALSE);
3547 Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl);
3548 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3549 incpush(SvPVX(privdir), TRUE, FALSE);
3551 SvREFCNT_dec(privdir);
3554 incpush(":", FALSE, FALSE);
3557 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
3560 incpush(PRIVLIB_EXP, TRUE, FALSE);
3562 incpush(PRIVLIB_EXP, FALSE, FALSE);
3566 /* sitearch is always relative to sitelib on Windows for
3567 * DLL-based path intuition to work correctly */
3568 # if !defined(WIN32)
3569 incpush(SITEARCH_EXP, FALSE, FALSE);
3575 incpush(SITELIB_EXP, TRUE, FALSE); /* this picks up sitearch as well */
3577 incpush(SITELIB_EXP, FALSE, FALSE);
3581 #ifdef SITELIB_STEM /* Search for version-specific dirs below here */
3582 incpush(SITELIB_STEM, FALSE, TRUE);
3585 #ifdef PERL_VENDORARCH_EXP
3586 /* vendorarch is always relative to vendorlib on Windows for
3587 * DLL-based path intuition to work correctly */
3588 # if !defined(WIN32)
3589 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE);
3593 #ifdef PERL_VENDORLIB_EXP
3595 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE); /* this picks up vendorarch as well */
3597 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE);
3601 #ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
3602 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE);
3605 #ifdef PERL_OTHERLIBDIRS
3606 incpush(PERL_OTHERLIBDIRS, TRUE, TRUE);
3610 incpush(".", FALSE, FALSE);
3611 #endif /* MACOS_TRADITIONAL */
3614 #if defined(DOSISH) || defined(EPOC)
3615 # define PERLLIB_SEP ';'
3618 # define PERLLIB_SEP '|'
3620 # if defined(MACOS_TRADITIONAL)
3621 # define PERLLIB_SEP ','
3623 # define PERLLIB_SEP ':'
3627 #ifndef PERLLIB_MANGLE
3628 # define PERLLIB_MANGLE(s,n) (s)
3632 S_incpush(pTHX_ char *p, int addsubdirs, int addoldvers)
3634 SV *subdir = Nullsv;
3639 if (addsubdirs || addoldvers) {
3640 subdir = sv_newmortal();
3643 /* Break at all separators */
3645 SV *libdir = NEWSV(55,0);
3648 /* skip any consecutive separators */
3649 while ( *p == PERLLIB_SEP ) {
3650 /* Uncomment the next line for PATH semantics */
3651 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
3655 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
3656 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
3661 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
3662 p = Nullch; /* break out */
3664 #ifdef MACOS_TRADITIONAL
3665 if (!strchr(SvPVX(libdir), ':'))
3666 sv_insert(libdir, 0, 0, ":", 1);
3667 if (SvPVX(libdir)[SvCUR(libdir)-1] != ':')
3668 sv_catpv(libdir, ":");
3672 * BEFORE pushing libdir onto @INC we may first push version- and
3673 * archname-specific sub-directories.
3675 if (addsubdirs || addoldvers) {
3676 #ifdef PERL_INC_VERSION_LIST
3677 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
3678 const char *incverlist[] = { PERL_INC_VERSION_LIST };
3679 const char **incver;
3681 struct stat tmpstatbuf;
3686 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
3688 while (unix[len-1] == '/') len--; /* Cosmetic */
3689 sv_usepvn(libdir,unix,len);
3692 PerlIO_printf(Perl_error_log,
3693 "Failed to unixify @INC element \"%s\"\n",
3697 #ifdef MACOS_TRADITIONAL
3698 #define PERL_AV_SUFFIX_FMT ""
3699 #define PERL_ARCH_FMT "%s:"
3700 #define PERL_ARCH_FMT_PATH PERL_FS_VER_FMT PERL_AV_SUFFIX_FMT
3702 #define PERL_AV_SUFFIX_FMT "/"
3703 #define PERL_ARCH_FMT "/%s"
3704 #define PERL_ARCH_FMT_PATH PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT
3706 /* .../version/archname if -d .../version/archname */
3707 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH PERL_ARCH_FMT,
3709 (int)PERL_REVISION, (int)PERL_VERSION,
3710 (int)PERL_SUBVERSION, ARCHNAME);
3711 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3712 S_ISDIR(tmpstatbuf.st_mode))
3713 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3715 /* .../version if -d .../version */
3716 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH, libdir,
3717 (int)PERL_REVISION, (int)PERL_VERSION,
3718 (int)PERL_SUBVERSION);
3719 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3720 S_ISDIR(tmpstatbuf.st_mode))
3721 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3723 /* .../archname if -d .../archname */
3724 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, ARCHNAME);
3725 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3726 S_ISDIR(tmpstatbuf.st_mode))
3727 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3730 #ifdef PERL_INC_VERSION_LIST
3732 for (incver = incverlist; *incver; incver++) {
3733 /* .../xxx if -d .../xxx */
3734 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, *incver);
3735 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3736 S_ISDIR(tmpstatbuf.st_mode))
3737 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3743 /* finally push this lib directory on the end of @INC */
3744 av_push(GvAVn(PL_incgv), libdir);
3748 #ifdef USE_5005THREADS
3749 STATIC struct perl_thread *
3750 S_init_main_thread(pTHX)
3752 #if !defined(PERL_IMPLICIT_CONTEXT)
3753 struct perl_thread *thr;
3757 Newz(53, thr, 1, struct perl_thread);
3758 PL_curcop = &PL_compiling;
3759 thr->interp = PERL_GET_INTERP;
3760 thr->cvcache = newHV();
3761 thr->threadsv = newAV();
3762 /* thr->threadsvp is set when find_threadsv is called */
3763 thr->specific = newAV();
3764 thr->flags = THRf_R_JOINABLE;
3765 MUTEX_INIT(&thr->mutex);
3766 /* Handcraft thrsv similarly to mess_sv */
3767 New(53, PL_thrsv, 1, SV);
3768 Newz(53, xpv, 1, XPV);
3769 SvFLAGS(PL_thrsv) = SVt_PV;
3770 SvANY(PL_thrsv) = (void*)xpv;
3771 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
3772 SvPVX(PL_thrsv) = (char*)thr;
3773 SvCUR_set(PL_thrsv, sizeof(thr));
3774 SvLEN_set(PL_thrsv, sizeof(thr));
3775 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
3776 thr->oursv = PL_thrsv;
3777 PL_chopset = " \n-";
3780 MUTEX_LOCK(&PL_threads_mutex);
3786 MUTEX_UNLOCK(&PL_threads_mutex);
3788 #ifdef HAVE_THREAD_INTERN
3789 Perl_init_thread_intern(thr);
3792 #ifdef SET_THREAD_SELF
3793 SET_THREAD_SELF(thr);
3795 thr->self = pthread_self();
3796 #endif /* SET_THREAD_SELF */
3800 * These must come after the thread self setting
3801 * because sv_setpvn does SvTAINT and the taint
3802 * fields thread selfness being set.
3804 PL_toptarget = NEWSV(0,0);
3805 sv_upgrade(PL_toptarget, SVt_PVFM);
3806 sv_setpvn(PL_toptarget, "", 0);
3807 PL_bodytarget = NEWSV(0,0);
3808 sv_upgrade(PL_bodytarget, SVt_PVFM);
3809 sv_setpvn(PL_bodytarget, "", 0);
3810 PL_formtarget = PL_bodytarget;
3811 thr->errsv = newSVpvn("", 0);
3812 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
3815 PL_peepp = MEMBER_TO_FPTR(Perl_peep);
3816 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3817 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3818 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3819 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3820 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
3822 PL_reginterp_cnt = 0;
3826 #endif /* USE_5005THREADS */
3829 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
3832 line_t oldline = CopLINE(PL_curcop);
3838 while (AvFILL(paramList) >= 0) {
3839 cv = (CV*)av_shift(paramList);
3840 if (PL_savebegin && (paramList == PL_beginav)) {
3841 /* save PL_beginav for compiler */
3842 if (! PL_beginav_save)
3843 PL_beginav_save = newAV();
3844 av_push(PL_beginav_save, (SV*)cv);
3848 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3849 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_list_body), cv);
3855 #ifndef PERL_FLEXIBLE_EXCEPTIONS
3859 (void)SvPV(atsv, len);
3862 PL_curcop = &PL_compiling;
3863 CopLINE_set(PL_curcop, oldline);
3864 if (paramList == PL_beginav)
3865 sv_catpv(atsv, "BEGIN failed--compilation aborted");
3867 Perl_sv_catpvf(aTHX_ atsv,
3868 "%s failed--call queue aborted",
3869 paramList == PL_checkav ? "CHECK"
3870 : paramList == PL_initav ? "INIT"
3872 while (PL_scopestack_ix > oldscope)
3875 Perl_croak(aTHX_ "%s", SvPVx(atsv, n_a));
3882 /* my_exit() was called */
3883 while (PL_scopestack_ix > oldscope)
3886 PL_curstash = PL_defstash;
3887 PL_curcop = &PL_compiling;
3888 CopLINE_set(PL_curcop, oldline);
3890 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
3891 if (paramList == PL_beginav)
3892 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
3894 Perl_croak(aTHX_ "%s failed--call queue aborted",
3895 paramList == PL_checkav ? "CHECK"
3896 : paramList == PL_initav ? "INIT"
3903 PL_curcop = &PL_compiling;
3904 CopLINE_set(PL_curcop, oldline);
3907 PerlIO_printf(Perl_error_log, "panic: restartop\n");
3915 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3917 S_vcall_list_body(pTHX_ va_list args)
3919 CV *cv = va_arg(args, CV*);
3920 return call_list_body(cv);
3925 S_call_list_body(pTHX_ CV *cv)
3927 PUSHMARK(PL_stack_sp);
3928 call_sv((SV*)cv, G_EVAL|G_DISCARD);
3933 Perl_my_exit(pTHX_ U32 status)
3935 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
3936 thr, (unsigned long) status));
3945 STATUS_NATIVE_SET(status);
3952 Perl_my_failure_exit(pTHX)
3955 if (vaxc$errno & 1) {
3956 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
3957 STATUS_NATIVE_SET(44);
3960 if (!vaxc$errno && errno) /* unlikely */
3961 STATUS_NATIVE_SET(44);
3963 STATUS_NATIVE_SET(vaxc$errno);
3968 STATUS_POSIX_SET(errno);
3970 exitstatus = STATUS_POSIX >> 8;
3971 if (exitstatus & 255)
3972 STATUS_POSIX_SET(exitstatus);
3974 STATUS_POSIX_SET(255);
3981 S_my_exit_jump(pTHX)
3983 register PERL_CONTEXT *cx;
3988 SvREFCNT_dec(PL_e_script);
3989 PL_e_script = Nullsv;
3992 POPSTACK_TO(PL_mainstack);
3993 if (cxstack_ix >= 0) {
3996 POPBLOCK(cx,PL_curpm);
4004 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen)
4007 p = SvPVX(PL_e_script);
4008 nl = strchr(p, '\n');
4009 nl = (nl) ? nl+1 : SvEND(PL_e_script);
4011 filter_del(read_e_script);
4014 sv_catpvn(buf_sv, p, nl-p);
4015 sv_chop(PL_e_script, nl);