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);
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 Safefree(PL_origfilename);
804 Safefree(PL_reg_start_tmp);
806 Safefree(PL_reg_curpm);
807 Safefree(PL_reg_poscache);
808 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
809 Safefree(PL_op_mask);
810 Safefree(PL_psig_ptr);
811 Safefree(PL_psig_name);
812 Safefree(PL_bitcount);
813 Safefree(PL_psig_pend);
815 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
817 DEBUG_P(debprofdump());
818 #ifdef USE_5005THREADS
819 MUTEX_DESTROY(&PL_strtab_mutex);
820 MUTEX_DESTROY(&PL_sv_mutex);
821 MUTEX_DESTROY(&PL_eval_mutex);
822 MUTEX_DESTROY(&PL_cred_mutex);
823 MUTEX_DESTROY(&PL_fdpid_mutex);
824 COND_DESTROY(&PL_eval_cond);
825 #ifdef EMULATE_ATOMIC_REFCOUNTS
826 MUTEX_DESTROY(&PL_svref_mutex);
827 #endif /* EMULATE_ATOMIC_REFCOUNTS */
829 /* As the penultimate thing, free the non-arena SV for thrsv */
830 Safefree(SvPVX(PL_thrsv));
831 Safefree(SvANY(PL_thrsv));
834 #endif /* USE_5005THREADS */
836 #ifdef USE_REENTRANT_API
837 Safefree(PL_reentrant_buffer->tmbuff);
838 Safefree(PL_reentrant_buffer);
843 /* As the absolutely last thing, free the non-arena SV for mess() */
846 /* it could have accumulated taint magic */
847 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
850 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
851 moremagic = mg->mg_moremagic;
852 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
854 Safefree(mg->mg_ptr);
858 /* we know that type >= SVt_PV */
859 (void)SvOOK_off(PL_mess_sv);
860 Safefree(SvPVX(PL_mess_sv));
861 Safefree(SvANY(PL_mess_sv));
862 Safefree(PL_mess_sv);
865 return STATUS_NATIVE_EXPORT;
869 =for apidoc perl_free
871 Releases a Perl interpreter. See L<perlembed>.
879 #if defined(WIN32) || defined(NETWARE)
880 # if defined(PERL_IMPLICIT_SYS)
882 void *host = nw_internal_host;
884 void *host = w32_internal_host;
887 if (PerlProc_lasthost()) {
895 nw5_delete_internal_host(host);
897 win32_delete_internal_host(host);
911 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
913 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
914 PL_exitlist[PL_exitlistlen].fn = fn;
915 PL_exitlist[PL_exitlistlen].ptr = ptr;
920 =for apidoc perl_parse
922 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
928 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
933 #ifdef USE_5005THREADS
937 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
940 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
941 setuid perl scripts securely.\n");
947 /* we copy rather than point to argv
948 * since perl_clone will copy and perl_destruct
949 * has no way of knowing if we've made a copy or
953 New(0, PL_origargv, i+1, char*);
954 PL_origargv[i] = '\0';
956 PL_origargv[i] = savepv(argv[i]);
964 /* Come here if running an undumped a.out. */
966 PL_origfilename = savepv(argv[0]);
967 PL_do_undump = FALSE;
968 cxstack_ix = -1; /* start label stack again */
970 init_postdump_symbols(argc,argv,env);
975 PL_curpad = AvARRAY(PL_comppad);
976 op_free(PL_main_root);
977 PL_main_root = Nullop;
979 PL_main_start = Nullop;
980 SvREFCNT_dec(PL_main_cv);
984 oldscope = PL_scopestack_ix;
985 PL_dowarn = G_WARN_OFF;
987 #ifdef PERL_FLEXIBLE_EXCEPTIONS
988 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
994 #ifndef PERL_FLEXIBLE_EXCEPTIONS
995 parse_body(env,xsinit);
998 call_list(oldscope, PL_checkav);
1005 /* my_exit() was called */
1006 while (PL_scopestack_ix > oldscope)
1009 PL_curstash = PL_defstash;
1011 call_list(oldscope, PL_checkav);
1012 ret = STATUS_NATIVE_EXPORT;
1015 PerlIO_printf(Perl_error_log, "panic: top_env\n");
1023 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1025 S_vparse_body(pTHX_ va_list args)
1027 char **env = va_arg(args, char**);
1028 XSINIT_t xsinit = va_arg(args, XSINIT_t);
1030 return parse_body(env, xsinit);
1035 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
1037 int argc = PL_origargc;
1038 char **argv = PL_origargv;
1039 char *scriptname = NULL;
1041 VOL bool dosearch = FALSE;
1042 char *validarg = "";
1046 char *cddir = Nullch;
1048 sv_setpvn(PL_linestr,"",0);
1049 sv = newSVpvn("",0); /* first used for -I flags */
1053 for (argc--,argv++; argc > 0; argc--,argv++) {
1054 if (argv[0][0] != '-' || !argv[0][1])
1058 validarg = " PHOOEY ";
1067 win32_argv2utf8(argc-1, argv+1);
1070 #ifndef PERL_STRICT_CR
1094 if ((s = moreswitches(s)))
1104 #ifdef MACOS_TRADITIONAL
1105 /* ignore -e for Dev:Pseudo argument */
1106 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
1109 if (PL_euid != PL_uid || PL_egid != PL_gid)
1110 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
1112 PL_e_script = newSVpvn("",0);
1113 filter_add(read_e_script, NULL);
1116 sv_catpv(PL_e_script, s);
1118 sv_catpv(PL_e_script, argv[1]);
1122 Perl_croak(aTHX_ "No code specified for -e");
1123 sv_catpv(PL_e_script, "\n");
1126 case 'I': /* -I handled both here and in moreswitches() */
1128 if (!*++s && (s=argv[1]) != Nullch) {
1133 STRLEN len = strlen(s);
1134 p = savepvn(s, len);
1135 incpush(p, TRUE, TRUE);
1136 sv_catpvn(sv, "-I", 2);
1137 sv_catpvn(sv, p, len);
1138 sv_catpvn(sv, " ", 1);
1142 Perl_croak(aTHX_ "No directory specified for -I");
1146 PL_preprocess = TRUE;
1156 PL_preambleav = newAV();
1157 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
1159 PL_Sv = newSVpv("print myconfig();",0);
1161 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
1163 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
1165 sv_catpv(PL_Sv,"\" Compile-time options:");
1167 sv_catpv(PL_Sv," DEBUGGING");
1169 # ifdef MULTIPLICITY
1170 sv_catpv(PL_Sv," MULTIPLICITY");
1172 # ifdef USE_5005THREADS
1173 sv_catpv(PL_Sv," USE_5005THREADS");
1175 # ifdef USE_ITHREADS
1176 sv_catpv(PL_Sv," USE_ITHREADS");
1178 # ifdef USE_64_BIT_INT
1179 sv_catpv(PL_Sv," USE_64_BIT_INT");
1181 # ifdef USE_64_BIT_ALL
1182 sv_catpv(PL_Sv," USE_64_BIT_ALL");
1184 # ifdef USE_LONG_DOUBLE
1185 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1187 # ifdef USE_LARGE_FILES
1188 sv_catpv(PL_Sv," USE_LARGE_FILES");
1191 sv_catpv(PL_Sv," USE_SOCKS");
1193 # ifdef PERL_IMPLICIT_CONTEXT
1194 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1196 # ifdef PERL_IMPLICIT_SYS
1197 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1199 sv_catpv(PL_Sv,"\\n\",");
1201 #if defined(LOCAL_PATCH_COUNT)
1202 if (LOCAL_PATCH_COUNT > 0) {
1204 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
1205 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1206 if (PL_localpatches[i])
1207 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
1211 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
1214 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
1216 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
1219 sv_catpv(PL_Sv, "; \
1221 @env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; ");
1224 push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
1227 print \" \\%ENV:\\n @env\\n\" if @env; \
1228 print \" \\@INC:\\n @INC\\n\";");
1231 PL_Sv = newSVpv("config_vars(qw(",0);
1232 sv_catpv(PL_Sv, ++s);
1233 sv_catpv(PL_Sv, "))");
1236 av_push(PL_preambleav, PL_Sv);
1237 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1240 PL_doextract = TRUE;
1248 if (!*++s || isSPACE(*s)) {
1252 /* catch use of gnu style long options */
1253 if (strEQ(s, "version")) {
1257 if (strEQ(s, "help")) {
1264 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1270 #ifndef SECURE_INTERNAL_GETENV
1273 (s = PerlEnv_getenv("PERL5OPT")))
1278 if (*s == '-' && *(s+1) == 'T')
1281 char *popt_copy = Nullch;
1294 if (!strchr("DIMUdmw", *s))
1295 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
1299 popt_copy = SvPVX(sv_2mortal(newSVpv(popt,0)));
1300 s = popt_copy + (s - popt);
1301 d = popt_copy + (d - popt);
1313 scriptname = argv[0];
1316 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1318 else if (scriptname == Nullch) {
1320 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1328 open_script(scriptname,dosearch,sv,&fdscript);
1330 validate_suid(validarg, scriptname,fdscript);
1333 #if defined(SIGCHLD) || defined(SIGCLD)
1336 # define SIGCHLD SIGCLD
1338 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1339 if (sigstate == SIG_IGN) {
1340 if (ckWARN(WARN_SIGNAL))
1341 Perl_warner(aTHX_ WARN_SIGNAL,
1342 "Can't ignore signal CHLD, forcing to default");
1343 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1349 #ifdef MACOS_TRADITIONAL
1350 if (PL_doextract || gMacPerl_AlwaysExtract) {
1355 if (cddir && PerlDir_chdir(cddir) < 0)
1356 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1360 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1361 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1362 CvUNIQUE_on(PL_compcv);
1364 PL_comppad = newAV();
1365 av_push(PL_comppad, Nullsv);
1366 PL_curpad = AvARRAY(PL_comppad);
1367 PL_comppad_name = newAV();
1368 PL_comppad_name_fill = 0;
1369 PL_min_intro_pending = 0;
1371 #ifdef USE_5005THREADS
1372 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
1373 PL_curpad[0] = (SV*)newAV();
1374 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1375 CvOWNER(PL_compcv) = 0;
1376 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1377 MUTEX_INIT(CvMUTEXP(PL_compcv));
1378 #endif /* USE_5005THREADS */
1380 comppadlist = newAV();
1381 AvREAL_off(comppadlist);
1382 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1383 av_store(comppadlist, 1, (SV*)PL_comppad);
1384 CvPADLIST(PL_compcv) = comppadlist;
1387 boot_core_UNIVERSAL();
1389 boot_core_xsutils();
1393 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
1395 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
1401 # ifdef HAS_SOCKS5_INIT
1402 socks5_init(argv[0]);
1408 init_predump_symbols();
1409 /* init_postdump_symbols not currently designed to be called */
1410 /* more than once (ENV isn't cleared first, for example) */
1411 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
1413 init_postdump_symbols(argc,argv,env);
1417 /* now parse the script */
1419 SETERRNO(0,SS$_NORMAL);
1421 #ifdef MACOS_TRADITIONAL
1422 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1424 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1426 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1427 MacPerl_MPWFileName(PL_origfilename));
1431 if (yyparse() || PL_error_count) {
1433 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
1435 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1440 CopLINE_set(PL_curcop, 0);
1441 PL_curstash = PL_defstash;
1442 PL_preprocess = FALSE;
1444 SvREFCNT_dec(PL_e_script);
1445 PL_e_script = Nullsv;
1449 Not sure that this is still the right place to do this now that we
1450 no longer use PL_nrs. HVDS 2001/09/09
1452 sv_setsv(get_sv("/", TRUE), PL_rs);
1458 SAVECOPFILE(PL_curcop);
1459 SAVECOPLINE(PL_curcop);
1460 gv_check(PL_defstash);
1467 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1468 dump_mstats("after compilation:");
1477 =for apidoc perl_run
1479 Tells a Perl interpreter to run. See L<perlembed>.
1490 #ifdef USE_5005THREADS
1494 oldscope = PL_scopestack_ix;
1496 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1498 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1504 cxstack_ix = -1; /* start context stack again */
1506 case 0: /* normal completion */
1507 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1512 case 2: /* my_exit() */
1513 while (PL_scopestack_ix > oldscope)
1516 PL_curstash = PL_defstash;
1517 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
1518 PL_endav && !PL_minus_c)
1519 call_list(oldscope, PL_endav);
1521 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1522 dump_mstats("after execution: ");
1524 ret = STATUS_NATIVE_EXPORT;
1528 POPSTACK_TO(PL_mainstack);
1531 PerlIO_printf(Perl_error_log, "panic: restartop\n");
1541 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1543 S_vrun_body(pTHX_ va_list args)
1545 I32 oldscope = va_arg(args, I32);
1547 return run_body(oldscope);
1553 S_run_body(pTHX_ I32 oldscope)
1555 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
1556 PL_sawampersand ? "Enabling" : "Omitting"));
1558 if (!PL_restartop) {
1559 DEBUG_x(dump_all());
1560 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
1561 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1565 #ifdef MACOS_TRADITIONAL
1566 PerlIO_printf(Perl_error_log, "# %s syntax OK\n", MacPerl_MPWFileName(PL_origfilename));
1568 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
1572 if (PERLDB_SINGLE && PL_DBsingle)
1573 sv_setiv(PL_DBsingle, 1);
1575 call_list(oldscope, PL_initav);
1581 PL_op = PL_restartop;
1585 else if (PL_main_start) {
1586 CvDEPTH(PL_main_cv) = 1;
1587 PL_op = PL_main_start;
1597 =for apidoc p||get_sv
1599 Returns the SV of the specified Perl scalar. If C<create> is set and the
1600 Perl variable does not exist then it will be created. If C<create> is not
1601 set and the variable does not exist then NULL is returned.
1607 Perl_get_sv(pTHX_ const char *name, I32 create)
1610 #ifdef USE_5005THREADS
1611 if (name[1] == '\0' && !isALPHA(name[0])) {
1612 PADOFFSET tmp = find_threadsv(name);
1613 if (tmp != NOT_IN_PAD)
1614 return THREADSV(tmp);
1616 #endif /* USE_5005THREADS */
1617 gv = gv_fetchpv(name, create, SVt_PV);
1624 =for apidoc p||get_av
1626 Returns the AV of the specified Perl array. If C<create> is set and the
1627 Perl variable does not exist then it will be created. If C<create> is not
1628 set and the variable does not exist then NULL is returned.
1634 Perl_get_av(pTHX_ const char *name, I32 create)
1636 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1645 =for apidoc p||get_hv
1647 Returns the HV of the specified Perl hash. If C<create> is set and the
1648 Perl variable does not exist then it will be created. If C<create> is not
1649 set and the variable does not exist then NULL is returned.
1655 Perl_get_hv(pTHX_ const char *name, I32 create)
1657 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1666 =for apidoc p||get_cv
1668 Returns the CV of the specified Perl subroutine. If C<create> is set and
1669 the Perl subroutine does not exist then it will be declared (which has the
1670 same effect as saying C<sub name;>). If C<create> is not set and the
1671 subroutine does not exist then NULL is returned.
1677 Perl_get_cv(pTHX_ const char *name, I32 create)
1679 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
1680 /* XXX unsafe for threads if eval_owner isn't held */
1681 /* XXX this is probably not what they think they're getting.
1682 * It has the same effect as "sub name;", i.e. just a forward
1684 if (create && !GvCVu(gv))
1685 return newSUB(start_subparse(FALSE, 0),
1686 newSVOP(OP_CONST, 0, newSVpv(name,0)),
1694 /* Be sure to refetch the stack pointer after calling these routines. */
1697 =for apidoc p||call_argv
1699 Performs a callback to the specified Perl sub. See L<perlcall>.
1705 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
1707 /* See G_* flags in cop.h */
1708 /* null terminated arg list */
1715 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
1720 return call_pv(sub_name, flags);
1724 =for apidoc p||call_pv
1726 Performs a callback to the specified Perl sub. See L<perlcall>.
1732 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
1733 /* name of the subroutine */
1734 /* See G_* flags in cop.h */
1736 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
1740 =for apidoc p||call_method
1742 Performs a callback to the specified Perl method. The blessed object must
1743 be on the stack. See L<perlcall>.
1749 Perl_call_method(pTHX_ const char *methname, I32 flags)
1750 /* name of the subroutine */
1751 /* See G_* flags in cop.h */
1753 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
1756 /* May be called with any of a CV, a GV, or an SV containing the name. */
1758 =for apidoc p||call_sv
1760 Performs a callback to the Perl sub whose name is in the SV. See
1767 Perl_call_sv(pTHX_ SV *sv, I32 flags)
1768 /* See G_* flags in cop.h */
1771 LOGOP myop; /* fake syntax tree node */
1774 volatile I32 retval = 0;
1776 bool oldcatch = CATCH_GET;
1781 if (flags & G_DISCARD) {
1786 Zero(&myop, 1, LOGOP);
1787 myop.op_next = Nullop;
1788 if (!(flags & G_NOARGS))
1789 myop.op_flags |= OPf_STACKED;
1790 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1791 (flags & G_ARRAY) ? OPf_WANT_LIST :
1796 EXTEND(PL_stack_sp, 1);
1797 *++PL_stack_sp = sv;
1799 oldscope = PL_scopestack_ix;
1801 if (PERLDB_SUB && PL_curstash != PL_debstash
1802 /* Handle first BEGIN of -d. */
1803 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
1804 /* Try harder, since this may have been a sighandler, thus
1805 * curstash may be meaningless. */
1806 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
1807 && !(flags & G_NODEBUG))
1808 PL_op->op_private |= OPpENTERSUB_DB;
1810 if (flags & G_METHOD) {
1811 Zero(&method_op, 1, UNOP);
1812 method_op.op_next = PL_op;
1813 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1814 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
1815 PL_op = (OP*)&method_op;
1818 if (!(flags & G_EVAL)) {
1820 call_body((OP*)&myop, FALSE);
1821 retval = PL_stack_sp - (PL_stack_base + oldmark);
1822 CATCH_SET(oldcatch);
1825 myop.op_other = (OP*)&myop;
1827 /* we're trying to emulate pp_entertry() here */
1829 register PERL_CONTEXT *cx;
1830 I32 gimme = GIMME_V;
1835 push_return(Nullop);
1836 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
1838 PL_eval_root = PL_op; /* Only needed so that goto works right. */
1840 PL_in_eval = EVAL_INEVAL;
1841 if (flags & G_KEEPERR)
1842 PL_in_eval |= EVAL_KEEPERR;
1848 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1850 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1857 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1859 call_body((OP*)&myop, FALSE);
1861 retval = PL_stack_sp - (PL_stack_base + oldmark);
1862 if (!(flags & G_KEEPERR))
1869 /* my_exit() was called */
1870 PL_curstash = PL_defstash;
1873 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1874 Perl_croak(aTHX_ "Callback called exit");
1879 PL_op = PL_restartop;
1883 PL_stack_sp = PL_stack_base + oldmark;
1884 if (flags & G_ARRAY)
1888 *++PL_stack_sp = &PL_sv_undef;
1893 if (PL_scopestack_ix > oldscope) {
1897 register PERL_CONTEXT *cx;
1909 if (flags & G_DISCARD) {
1910 PL_stack_sp = PL_stack_base + oldmark;
1919 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1921 S_vcall_body(pTHX_ va_list args)
1923 OP *myop = va_arg(args, OP*);
1924 int is_eval = va_arg(args, int);
1926 call_body(myop, is_eval);
1932 S_call_body(pTHX_ OP *myop, int is_eval)
1934 if (PL_op == myop) {
1936 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
1938 PL_op = Perl_pp_entersub(aTHX); /* this does */
1944 /* Eval a string. The G_EVAL flag is always assumed. */
1947 =for apidoc p||eval_sv
1949 Tells Perl to C<eval> the string in the SV.
1955 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
1957 /* See G_* flags in cop.h */
1960 UNOP myop; /* fake syntax tree node */
1961 volatile I32 oldmark = SP - PL_stack_base;
1962 volatile I32 retval = 0;
1968 if (flags & G_DISCARD) {
1975 Zero(PL_op, 1, UNOP);
1976 EXTEND(PL_stack_sp, 1);
1977 *++PL_stack_sp = sv;
1978 oldscope = PL_scopestack_ix;
1980 if (!(flags & G_NOARGS))
1981 myop.op_flags = OPf_STACKED;
1982 myop.op_next = Nullop;
1983 myop.op_type = OP_ENTEREVAL;
1984 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1985 (flags & G_ARRAY) ? OPf_WANT_LIST :
1987 if (flags & G_KEEPERR)
1988 myop.op_flags |= OPf_SPECIAL;
1990 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1992 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1999 #ifndef PERL_FLEXIBLE_EXCEPTIONS
2001 call_body((OP*)&myop,TRUE);
2003 retval = PL_stack_sp - (PL_stack_base + oldmark);
2004 if (!(flags & G_KEEPERR))
2011 /* my_exit() was called */
2012 PL_curstash = PL_defstash;
2015 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
2016 Perl_croak(aTHX_ "Callback called exit");
2021 PL_op = PL_restartop;
2025 PL_stack_sp = PL_stack_base + oldmark;
2026 if (flags & G_ARRAY)
2030 *++PL_stack_sp = &PL_sv_undef;
2036 if (flags & G_DISCARD) {
2037 PL_stack_sp = PL_stack_base + oldmark;
2047 =for apidoc p||eval_pv
2049 Tells Perl to C<eval> the given string and return an SV* result.
2055 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
2058 SV* sv = newSVpv(p, 0);
2060 eval_sv(sv, G_SCALAR);
2067 if (croak_on_error && SvTRUE(ERRSV)) {
2069 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
2075 /* Require a module. */
2078 =for apidoc p||require_pv
2080 Tells Perl to C<require> the file named by the string argument. It is
2081 analogous to the Perl code C<eval "require '$file'">. It's even
2082 implemented that way; consider using Perl_load_module instead.
2087 Perl_require_pv(pTHX_ const char *pv)
2091 PUSHSTACKi(PERLSI_REQUIRE);
2093 sv = sv_newmortal();
2094 sv_setpv(sv, "require '");
2097 eval_sv(sv, G_DISCARD);
2103 Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
2107 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
2108 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
2112 S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
2114 /* This message really ought to be max 23 lines.
2115 * Removed -h because the user already knows that option. Others? */
2117 static char *usage_msg[] = {
2118 "-0[octal] specify record separator (\\0, if no argument)",
2119 "-a autosplit mode with -n or -p (splits $_ into @F)",
2120 "-C enable native wide character system interfaces",
2121 "-c check syntax only (runs BEGIN and CHECK blocks)",
2122 "-d[:debugger] run program under debugger",
2123 "-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2124 "-e 'command' one line of program (several -e's allowed, omit programfile)",
2125 "-F/pattern/ split() pattern for -a switch (//'s are optional)",
2126 "-i[extension] edit <> files in place (makes backup if extension supplied)",
2127 "-Idirectory specify @INC/#include directory (several -I's allowed)",
2128 "-l[octal] enable line ending processing, specifies line terminator",
2129 "-[mM][-]module execute `use/no module...' before executing program",
2130 "-n assume 'while (<>) { ... }' loop around program",
2131 "-p assume loop like -n but print line also, like sed",
2132 "-P run program through C preprocessor before compilation",
2133 "-s enable rudimentary parsing for switches after programfile",
2134 "-S look for programfile using PATH environment variable",
2135 "-T enable tainting checks",
2136 "-u dump core after parsing program",
2137 "-U allow unsafe operations",
2138 "-v print version, subversion (includes VERY IMPORTANT perl info)",
2139 "-V[:variable] print configuration summary (or a single Config.pm variable)",
2140 "-w enable many useful warnings (RECOMMENDED)",
2141 "-W enable all warnings",
2142 "-X disable all warnings",
2143 "-x[directory] strip off text before #!perl line and perhaps cd to directory",
2147 char **p = usage_msg;
2149 PerlIO_printf(PerlIO_stdout(),
2150 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2153 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
2156 /* This routine handles any switches that can be given during run */
2159 Perl_moreswitches(pTHX_ char *s)
2169 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
2170 SvREFCNT_dec(PL_rs);
2171 if (rschar & ~((U8)~0))
2172 PL_rs = &PL_sv_undef;
2173 else if (!rschar && numlen >= 2)
2174 PL_rs = newSVpvn("", 0);
2177 PL_rs = newSVpvn(&ch, 1);
2182 PL_widesyscalls = TRUE;
2187 PL_splitstr = savepv(s + 1);
2201 /* The following permits -d:Mod to accepts arguments following an =
2202 in the fashion that -MSome::Mod does. */
2203 if (*s == ':' || *s == '=') {
2206 sv = newSVpv("use Devel::", 0);
2208 /* We now allow -d:Module=Foo,Bar */
2209 while(isALNUM(*s) || *s==':') ++s;
2211 sv_catpv(sv, start);
2213 sv_catpvn(sv, start, s-start);
2214 sv_catpv(sv, " split(/,/,q{");
2219 my_setenv("PERL5DB", SvPV(sv, PL_na));
2222 PL_perldb = PERLDB_ALL;
2230 if (isALPHA(s[1])) {
2231 /* if adding extra options, remember to update DEBUG_MASK */
2232 static char debopts[] = "psltocPmfrxuLHXDSTR";
2235 for (s++; *s && (d = strchr(debopts,*s)); s++)
2236 PL_debug |= 1 << (d - debopts);
2239 PL_debug = atoi(s+1);
2240 for (s++; isDIGIT(*s); s++) ;
2242 PL_debug |= DEBUG_TOP_FLAG;
2244 if (ckWARN_d(WARN_DEBUGGING))
2245 Perl_warner(aTHX_ WARN_DEBUGGING,
2246 "Recompile perl with -DDEBUGGING to use -D switch\n");
2247 for (s++; isALNUM(*s); s++) ;
2253 usage(PL_origargv[0]);
2257 Safefree(PL_inplace);
2258 PL_inplace = savepv(s+1);
2260 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
2263 if (*s == '-') /* Additional switches on #! line. */
2267 case 'I': /* -I handled both here and in parse_perl() */
2270 while (*s && isSPACE(*s))
2275 /* ignore trailing spaces (possibly followed by other switches) */
2277 for (e = p; *e && !isSPACE(*e); e++) ;
2281 } while (*p && *p != '-');
2282 e = savepvn(s, e-s);
2283 incpush(e, TRUE, TRUE);
2290 Perl_croak(aTHX_ "No directory specified for -I");
2296 SvREFCNT_dec(PL_ors_sv);
2301 PL_ors_sv = newSVpvn("\n",1);
2302 numlen = 3 + (*s == '0');
2303 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
2307 if (RsPARA(PL_rs)) {
2308 PL_ors_sv = newSVpvn("\n\n",2);
2311 PL_ors_sv = newSVsv(PL_rs);
2316 forbid_setid("-M"); /* XXX ? */
2319 forbid_setid("-m"); /* XXX ? */
2324 /* -M-foo == 'no foo' */
2325 if (*s == '-') { use = "no "; ++s; }
2326 sv = newSVpv(use,0);
2328 /* We allow -M'Module qw(Foo Bar)' */
2329 while(isALNUM(*s) || *s==':') ++s;
2331 sv_catpv(sv, start);
2332 if (*(start-1) == 'm') {
2334 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
2335 sv_catpv( sv, " ()");
2339 Perl_croak(aTHX_ "Module name required with -%c option",
2341 sv_catpvn(sv, start, s-start);
2342 sv_catpv(sv, " split(/,/,q{");
2348 PL_preambleav = newAV();
2349 av_push(PL_preambleav, sv);
2352 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
2364 PL_doswitches = TRUE;
2369 Perl_croak(aTHX_ "Too late for \"-T\" option");
2373 #ifdef MACOS_TRADITIONAL
2374 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2376 PL_do_undump = TRUE;
2385 PerlIO_printf(PerlIO_stdout(),
2386 Perl_form(aTHX_ "\nThis is perl, v%"VDf" built for %s",
2387 PL_patchlevel, ARCHNAME));
2389 /* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
2390 PerlIO_printf(PerlIO_stdout(),
2391 Perl_form(aTHX_ "\nThis is perl, version %vd\n", PL_patchlevel));
2392 PerlIO_printf(PerlIO_stdout(),
2393 Perl_form(aTHX_ " built under %s at %s %s\n",
2394 OSNAME, __DATE__, __TIME__));
2395 PerlIO_printf(PerlIO_stdout(),
2396 Perl_form(aTHX_ " OS Specific Release: %s\n",
2400 #if defined(LOCAL_PATCH_COUNT)
2401 if (LOCAL_PATCH_COUNT > 0)
2402 PerlIO_printf(PerlIO_stdout(),
2403 "\n(with %d registered patch%s, "
2404 "see perl -V for more detail)",
2405 (int)LOCAL_PATCH_COUNT,
2406 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
2409 PerlIO_printf(PerlIO_stdout(),
2410 "\n\nCopyright 1987-2001, Larry Wall\n");
2411 #ifdef MACOS_TRADITIONAL
2412 PerlIO_printf(PerlIO_stdout(),
2413 "\nMac OS port Copyright (c) 1991-2001, Matthias Neeracher\n");
2416 PerlIO_printf(PerlIO_stdout(),
2417 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
2420 PerlIO_printf(PerlIO_stdout(),
2421 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2422 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
2425 PerlIO_printf(PerlIO_stdout(),
2426 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2427 "Version 5 port Copyright (c) 1994-1999, Andreas Kaiser, Ilya Zakharevich\n");
2430 PerlIO_printf(PerlIO_stdout(),
2431 "atariST series port, ++jrb bammi@cadence.com\n");
2434 PerlIO_printf(PerlIO_stdout(),
2435 "BeOS port Copyright Tom Spindler, 1997-1999\n");
2438 PerlIO_printf(PerlIO_stdout(),
2439 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2001\n");
2442 PerlIO_printf(PerlIO_stdout(),
2443 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
2446 PerlIO_printf(PerlIO_stdout(),
2447 "Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n");
2450 PerlIO_printf(PerlIO_stdout(),
2451 "VM/ESA port by Neale Ferguson, 1998-1999\n");
2454 PerlIO_printf(PerlIO_stdout(),
2455 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
2458 PerlIO_printf(PerlIO_stdout(),
2459 "MiNT port by Guido Flohr, 1997-1999\n");
2462 PerlIO_printf(PerlIO_stdout(),
2463 "EPOC port by Olaf Flebbe, 1999-2000\n");
2466 printf("WINCE port by Rainer Keuchel, 2001\n");
2467 printf("Built on " __DATE__ " " __TIME__ "\n\n");
2470 #ifdef BINARY_BUILD_NOTICE
2471 BINARY_BUILD_NOTICE;
2473 PerlIO_printf(PerlIO_stdout(),
2475 Perl may be copied only under the terms of either the Artistic License or the\n\
2476 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
2477 Complete documentation for Perl, including FAQ lists, should be found on\n\
2478 this system using `man perl' or `perldoc perl'. If you have access to the\n\
2479 Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
2482 if (! (PL_dowarn & G_WARN_ALL_MASK))
2483 PL_dowarn |= G_WARN_ON;
2487 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
2488 PL_compiling.cop_warnings = pWARN_ALL ;
2492 PL_dowarn = G_WARN_ALL_OFF;
2493 PL_compiling.cop_warnings = pWARN_NONE ;
2498 if (s[1] == '-') /* Additional switches on #! line. */
2503 #if defined(WIN32) || !defined(PERL_STRICT_CR)
2509 #ifdef ALTERNATE_SHEBANG
2510 case 'S': /* OS/2 needs -S on "extproc" line. */
2518 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
2523 /* compliments of Tom Christiansen */
2525 /* unexec() can be found in the Gnu emacs distribution */
2526 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
2529 Perl_my_unexec(pTHX)
2537 prog = newSVpv(BIN_EXP, 0);
2538 sv_catpv(prog, "/perl");
2539 file = newSVpv(PL_origfilename, 0);
2540 sv_catpv(file, ".perldump");
2542 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2543 /* unexec prints msg to stderr in case of failure */
2544 PerlProc_exit(status);
2547 # include <lib$routines.h>
2548 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
2550 ABORT(); /* for use with undump */
2555 /* initialize curinterp */
2561 # define PERLVAR(var,type)
2562 # define PERLVARA(var,n,type)
2563 # if defined(PERL_IMPLICIT_CONTEXT)
2564 # if defined(USE_5005THREADS)
2565 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2566 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2567 # else /* !USE_5005THREADS */
2568 # define PERLVARI(var,type,init) aTHX->var = init;
2569 # define PERLVARIC(var,type,init) aTHX->var = init;
2570 # endif /* USE_5005THREADS */
2572 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2573 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2575 # include "intrpvar.h"
2576 # ifndef USE_5005THREADS
2577 # include "thrdvar.h"
2584 # define PERLVAR(var,type)
2585 # define PERLVARA(var,n,type)
2586 # define PERLVARI(var,type,init) PL_##var = init;
2587 # define PERLVARIC(var,type,init) PL_##var = init;
2588 # include "intrpvar.h"
2589 # ifndef USE_5005THREADS
2590 # include "thrdvar.h"
2601 S_init_main_stash(pTHX)
2607 PL_curstash = PL_defstash = newHV();
2608 PL_curstname = newSVpvn("main",4);
2609 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2610 SvREFCNT_dec(GvHV(gv));
2611 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
2613 HvNAME(PL_defstash) = savepv("main");
2614 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2615 GvMULTI_on(PL_incgv);
2616 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2617 GvMULTI_on(PL_hintgv);
2618 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2619 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2620 GvMULTI_on(PL_errgv);
2621 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2622 GvMULTI_on(PL_replgv);
2623 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
2624 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2625 sv_setpvn(ERRSV, "", 0);
2626 PL_curstash = PL_defstash;
2627 CopSTASH_set(&PL_compiling, PL_defstash);
2628 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
2629 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
2630 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
2631 /* We must init $/ before switches are processed. */
2632 sv_setpvn(get_sv("/", TRUE), "\n", 1);
2636 S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
2641 PL_origfilename = savepv("-e");
2644 /* if find_script() returns, it returns a malloc()-ed value */
2645 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
2647 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2648 char *s = scriptname + 8;
2649 *fdscript = atoi(s);
2653 scriptname = savepv(s + 1);
2654 Safefree(PL_origfilename);
2655 PL_origfilename = scriptname;
2661 Safefree(CopFILE(PL_curcop));
2663 SvREFCNT_dec(CopFILEGV(PL_curcop));
2665 CopFILE_set(PL_curcop, PL_origfilename);
2666 if (strEQ(PL_origfilename,"-"))
2668 if (*fdscript >= 0) {
2669 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
2670 #if defined(HAS_FCNTL) && defined(F_SETFD)
2672 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2675 else if (PL_preprocess) {
2676 char *cpp_cfg = CPPSTDIN;
2677 SV *cpp = newSVpvn("",0);
2678 SV *cmd = NEWSV(0,0);
2680 if (strEQ(cpp_cfg, "cppstdin"))
2681 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
2682 sv_catpv(cpp, cpp_cfg);
2684 sv_catpvn(sv, "-I", 2);
2685 sv_catpv(sv,PRIVLIB_EXP);
2687 DEBUG_P(PerlIO_printf(Perl_debug_log,
2688 "PL_preprocess: scriptname=\"%s\", cpp=\"%s\", sv=\"%s\", CPPMINUS=\"%s\"\n",
2689 scriptname, SvPVX (cpp), SvPVX (sv), CPPMINUS));
2690 #if defined(MSDOS) || defined(WIN32)
2691 Perl_sv_setpvf(aTHX_ cmd, "\
2692 sed %s -e \"/^[^#]/b\" \
2693 -e \"/^#[ ]*include[ ]/b\" \
2694 -e \"/^#[ ]*define[ ]/b\" \
2695 -e \"/^#[ ]*if[ ]/b\" \
2696 -e \"/^#[ ]*ifdef[ ]/b\" \
2697 -e \"/^#[ ]*ifndef[ ]/b\" \
2698 -e \"/^#[ ]*else/b\" \
2699 -e \"/^#[ ]*elif[ ]/b\" \
2700 -e \"/^#[ ]*undef[ ]/b\" \
2701 -e \"/^#[ ]*endif/b\" \
2703 %s | %"SVf" -C %"SVf" %s",
2704 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
2707 Perl_sv_setpvf(aTHX_ cmd, "\
2708 %s %s -e '/^[^#]/b' \
2709 -e '/^#[ ]*include[ ]/b' \
2710 -e '/^#[ ]*define[ ]/b' \
2711 -e '/^#[ ]*if[ ]/b' \
2712 -e '/^#[ ]*ifdef[ ]/b' \
2713 -e '/^#[ ]*ifndef[ ]/b' \
2714 -e '/^#[ ]*else/b' \
2715 -e '/^#[ ]*elif[ ]/b' \
2716 -e '/^#[ ]*undef[ ]/b' \
2717 -e '/^#[ ]*endif/b' \
2719 %s | %"SVf" %"SVf" %s",
2721 Perl_sv_setpvf(aTHX_ cmd, "\
2722 %s %s -e '/^[^#]/b' \
2723 -e '/^#[ ]*include[ ]/b' \
2724 -e '/^#[ ]*define[ ]/b' \
2725 -e '/^#[ ]*if[ ]/b' \
2726 -e '/^#[ ]*ifdef[ ]/b' \
2727 -e '/^#[ ]*ifndef[ ]/b' \
2728 -e '/^#[ ]*else/b' \
2729 -e '/^#[ ]*elif[ ]/b' \
2730 -e '/^#[ ]*undef[ ]/b' \
2731 -e '/^#[ ]*endif/b' \
2733 %s | %"SVf" -C %"SVf" %s",
2740 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
2742 scriptname, cpp, sv, CPPMINUS);
2743 PL_doextract = FALSE;
2744 #ifdef IAMSUID /* actually, this is caught earlier */
2745 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
2747 (void)seteuid(PL_uid); /* musn't stay setuid root */
2750 (void)setreuid((Uid_t)-1, PL_uid);
2752 #ifdef HAS_SETRESUID
2753 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
2755 PerlProc_setuid(PL_uid);
2759 if (PerlProc_geteuid() != PL_uid)
2760 Perl_croak(aTHX_ "Can't do seteuid!\n");
2762 #endif /* IAMSUID */
2763 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
2767 else if (!*scriptname) {
2768 forbid_setid("program input from stdin");
2769 PL_rsfp = PerlIO_stdin();
2772 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
2773 #if defined(HAS_FCNTL) && defined(F_SETFD)
2775 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2780 #ifndef IAMSUID /* in case script is not readable before setuid */
2782 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
2783 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2786 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
2787 (int)PERL_REVISION, (int)PERL_VERSION,
2788 (int)PERL_SUBVERSION), PL_origargv);
2789 Perl_croak(aTHX_ "Can't do setuid\n");
2795 Perl_croak(aTHX_ "Can't open perl script: %s\n",
2798 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
2799 CopFILE(PL_curcop), Strerror(errno));
2805 * I_SYSSTATVFS HAS_FSTATVFS
2807 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
2808 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2809 * here so that metaconfig picks them up. */
2813 S_fd_on_nosuid_fs(pTHX_ int fd)
2815 int check_okay = 0; /* able to do all the required sys/libcalls */
2816 int on_nosuid = 0; /* the fd is on a nosuid fs */
2818 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
2819 * fstatvfs() is UNIX98.
2820 * fstatfs() is 4.3 BSD.
2821 * ustat()+getmnt() is pre-4.3 BSD.
2822 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2823 * an irrelevant filesystem while trying to reach the right one.
2826 #undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2828 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2829 defined(HAS_FSTATVFS)
2830 # define FD_ON_NOSUID_CHECK_OKAY
2831 struct statvfs stfs;
2833 check_okay = fstatvfs(fd, &stfs) == 0;
2834 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
2835 # endif /* fstatvfs */
2837 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2838 defined(PERL_MOUNT_NOSUID) && \
2839 defined(HAS_FSTATFS) && \
2840 defined(HAS_STRUCT_STATFS) && \
2841 defined(HAS_STRUCT_STATFS_F_FLAGS)
2842 # define FD_ON_NOSUID_CHECK_OKAY
2845 check_okay = fstatfs(fd, &stfs) == 0;
2846 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
2847 # endif /* fstatfs */
2849 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2850 defined(PERL_MOUNT_NOSUID) && \
2851 defined(HAS_FSTAT) && \
2852 defined(HAS_USTAT) && \
2853 defined(HAS_GETMNT) && \
2854 defined(HAS_STRUCT_FS_DATA) && \
2856 # define FD_ON_NOSUID_CHECK_OKAY
2859 if (fstat(fd, &fdst) == 0) {
2861 if (ustat(fdst.st_dev, &us) == 0) {
2863 /* NOSTAT_ONE here because we're not examining fields which
2864 * vary between that case and STAT_ONE. */
2865 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
2866 size_t cmplen = sizeof(us.f_fname);
2867 if (sizeof(fsd.fd_req.path) < cmplen)
2868 cmplen = sizeof(fsd.fd_req.path);
2869 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2870 fdst.st_dev == fsd.fd_req.dev) {
2872 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2878 # endif /* fstat+ustat+getmnt */
2880 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2881 defined(HAS_GETMNTENT) && \
2882 defined(HAS_HASMNTOPT) && \
2883 defined(MNTOPT_NOSUID)
2884 # define FD_ON_NOSUID_CHECK_OKAY
2885 FILE *mtab = fopen("/etc/mtab", "r");
2886 struct mntent *entry;
2887 struct stat stb, fsb;
2889 if (mtab && (fstat(fd, &stb) == 0)) {
2890 while (entry = getmntent(mtab)) {
2891 if (stat(entry->mnt_dir, &fsb) == 0
2892 && fsb.st_dev == stb.st_dev)
2894 /* found the filesystem */
2896 if (hasmntopt(entry, MNTOPT_NOSUID))
2899 } /* A single fs may well fail its stat(). */
2904 # endif /* getmntent+hasmntopt */
2907 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
2910 #endif /* IAMSUID */
2913 S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
2919 /* do we need to emulate setuid on scripts? */
2921 /* This code is for those BSD systems that have setuid #! scripts disabled
2922 * in the kernel because of a security problem. Merely defining DOSUID
2923 * in perl will not fix that problem, but if you have disabled setuid
2924 * scripts in the kernel, this will attempt to emulate setuid and setgid
2925 * on scripts that have those now-otherwise-useless bits set. The setuid
2926 * root version must be called suidperl or sperlN.NNN. If regular perl
2927 * discovers that it has opened a setuid script, it calls suidperl with
2928 * the same argv that it had. If suidperl finds that the script it has
2929 * just opened is NOT setuid root, it sets the effective uid back to the
2930 * uid. We don't just make perl setuid root because that loses the
2931 * effective uid we had before invoking perl, if it was different from the
2934 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2935 * be defined in suidperl only. suidperl must be setuid root. The
2936 * Configure script will set this up for you if you want it.
2942 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
2943 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
2944 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
2949 #ifndef HAS_SETREUID
2950 /* On this access check to make sure the directories are readable,
2951 * there is actually a small window that the user could use to make
2952 * filename point to an accessible directory. So there is a faint
2953 * chance that someone could execute a setuid script down in a
2954 * non-accessible directory. I don't know what to do about that.
2955 * But I don't think it's too important. The manual lies when
2956 * it says access() is useful in setuid programs.
2958 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
2959 Perl_croak(aTHX_ "Permission denied");
2961 /* If we can swap euid and uid, then we can determine access rights
2962 * with a simple stat of the file, and then compare device and
2963 * inode to make sure we did stat() on the same file we opened.
2964 * Then we just have to make sure he or she can execute it.
2967 struct stat tmpstatbuf;
2971 setreuid(PL_euid,PL_uid) < 0
2974 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
2977 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
2978 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
2979 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
2980 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
2981 #if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
2982 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
2983 Perl_croak(aTHX_ "Permission denied");
2985 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
2986 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
2987 (void)PerlIO_close(PL_rsfp);
2988 Perl_croak(aTHX_ "Permission denied\n");
2992 setreuid(PL_uid,PL_euid) < 0
2994 # if defined(HAS_SETRESUID)
2995 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
2998 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
2999 Perl_croak(aTHX_ "Can't reswap uid and euid");
3000 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
3001 Perl_croak(aTHX_ "Permission denied\n");
3003 #endif /* HAS_SETREUID */
3004 #endif /* IAMSUID */
3006 if (!S_ISREG(PL_statbuf.st_mode))
3007 Perl_croak(aTHX_ "Permission denied");
3008 if (PL_statbuf.st_mode & S_IWOTH)
3009 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
3010 PL_doswitches = FALSE; /* -s is insecure in suid */
3011 CopLINE_inc(PL_curcop);
3012 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
3013 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
3014 Perl_croak(aTHX_ "No #! line");
3015 s = SvPV(PL_linestr,n_a)+2;
3017 while (!isSPACE(*s)) s++;
3018 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
3019 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
3020 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
3021 Perl_croak(aTHX_ "Not a perl script");
3022 while (*s == ' ' || *s == '\t') s++;
3024 * #! arg must be what we saw above. They can invoke it by
3025 * mentioning suidperl explicitly, but they may not add any strange
3026 * arguments beyond what #! says if they do invoke suidperl that way.
3028 len = strlen(validarg);
3029 if (strEQ(validarg," PHOOEY ") ||
3030 strnNE(s,validarg,len) || !isSPACE(s[len]))
3031 Perl_croak(aTHX_ "Args must match #! line");
3034 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
3035 PL_euid == PL_statbuf.st_uid)
3037 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3038 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3039 #endif /* IAMSUID */
3041 if (PL_euid) { /* oops, we're not the setuid root perl */
3042 (void)PerlIO_close(PL_rsfp);
3045 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
3046 (int)PERL_REVISION, (int)PERL_VERSION,
3047 (int)PERL_SUBVERSION), PL_origargv);
3049 Perl_croak(aTHX_ "Can't do setuid\n");
3052 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
3054 (void)setegid(PL_statbuf.st_gid);
3057 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
3059 #ifdef HAS_SETRESGID
3060 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
3062 PerlProc_setgid(PL_statbuf.st_gid);
3066 if (PerlProc_getegid() != PL_statbuf.st_gid)
3067 Perl_croak(aTHX_ "Can't do setegid!\n");
3069 if (PL_statbuf.st_mode & S_ISUID) {
3070 if (PL_statbuf.st_uid != PL_euid)
3072 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
3075 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
3077 #ifdef HAS_SETRESUID
3078 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
3080 PerlProc_setuid(PL_statbuf.st_uid);
3084 if (PerlProc_geteuid() != PL_statbuf.st_uid)
3085 Perl_croak(aTHX_ "Can't do seteuid!\n");
3087 else if (PL_uid) { /* oops, mustn't run as root */
3089 (void)seteuid((Uid_t)PL_uid);
3092 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
3094 #ifdef HAS_SETRESUID
3095 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
3097 PerlProc_setuid((Uid_t)PL_uid);
3101 if (PerlProc_geteuid() != PL_uid)
3102 Perl_croak(aTHX_ "Can't do seteuid!\n");
3105 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
3106 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
3109 else if (PL_preprocess)
3110 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
3111 else if (fdscript >= 0)
3112 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
3114 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
3116 /* We absolutely must clear out any saved ids here, so we */
3117 /* exec the real perl, substituting fd script for scriptname. */
3118 /* (We pass script name as "subdir" of fd, which perl will grok.) */
3119 PerlIO_rewind(PL_rsfp);
3120 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
3121 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3122 if (!PL_origargv[which])
3123 Perl_croak(aTHX_ "Permission denied");
3124 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
3125 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
3126 #if defined(HAS_FCNTL) && defined(F_SETFD)
3127 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
3129 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
3130 (int)PERL_REVISION, (int)PERL_VERSION,
3131 (int)PERL_SUBVERSION), PL_origargv);/* try again */
3132 Perl_croak(aTHX_ "Can't do setuid\n");
3133 #endif /* IAMSUID */
3135 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
3136 #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
3137 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3138 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3140 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3143 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3144 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3145 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3146 /* not set-id, must be wrapped */
3152 S_find_beginning(pTHX)
3154 register char *s, *s2;
3156 /* skip forward in input to the real script? */
3159 #ifdef MACOS_TRADITIONAL
3160 /* Since the Mac OS does not honor #! arguments for us, we do it ourselves */
3162 while (PL_doextract || gMacPerl_AlwaysExtract) {
3163 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3164 if (!gMacPerl_AlwaysExtract)
3165 Perl_croak(aTHX_ "No Perl script found in input\n");
3167 if (PL_doextract) /* require explicit override ? */
3168 if (!OverrideExtract(PL_origfilename))
3169 Perl_croak(aTHX_ "User aborted script\n");
3171 PL_doextract = FALSE;
3173 /* Pater peccavi, file does not have #! */
3174 PerlIO_rewind(PL_rsfp);
3179 while (PL_doextract) {
3180 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
3181 Perl_croak(aTHX_ "No Perl script found in input\n");
3184 if (*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))) {
3185 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3186 PL_doextract = FALSE;
3187 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3189 while (*s == ' ' || *s == '\t') s++;
3191 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3192 if (strnEQ(s2-4,"perl",4))
3194 while ((s = moreswitches(s)))
3197 #ifdef MACOS_TRADITIONAL
3208 PL_uid = PerlProc_getuid();
3209 PL_euid = PerlProc_geteuid();
3210 PL_gid = PerlProc_getgid();
3211 PL_egid = PerlProc_getegid();
3213 PL_uid |= PL_gid << 16;
3214 PL_euid |= PL_egid << 16;
3216 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3220 S_forbid_setid(pTHX_ char *s)
3222 if (PL_euid != PL_uid)
3223 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3224 if (PL_egid != PL_gid)
3225 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
3229 Perl_init_debugger(pTHX)
3231 HV *ostash = PL_curstash;
3233 PL_curstash = PL_debstash;
3234 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3235 AvREAL_off(PL_dbargs);
3236 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3237 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3238 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
3239 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3240 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
3241 sv_setiv(PL_DBsingle, 0);
3242 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
3243 sv_setiv(PL_DBtrace, 0);
3244 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
3245 sv_setiv(PL_DBsignal, 0);
3246 PL_curstash = ostash;
3249 #ifndef STRESS_REALLOC
3250 #define REASONABLE(size) (size)
3252 #define REASONABLE(size) (1) /* unreasonable */
3256 Perl_init_stacks(pTHX)
3258 /* start with 128-item stack and 8K cxstack */
3259 PL_curstackinfo = new_stackinfo(REASONABLE(128),
3260 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3261 PL_curstackinfo->si_type = PERLSI_MAIN;
3262 PL_curstack = PL_curstackinfo->si_stack;
3263 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
3265 PL_stack_base = AvARRAY(PL_curstack);
3266 PL_stack_sp = PL_stack_base;
3267 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
3269 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3272 PL_tmps_max = REASONABLE(128);
3274 New(54,PL_markstack,REASONABLE(32),I32);
3275 PL_markstack_ptr = PL_markstack;
3276 PL_markstack_max = PL_markstack + REASONABLE(32);
3280 New(54,PL_scopestack,REASONABLE(32),I32);
3281 PL_scopestack_ix = 0;
3282 PL_scopestack_max = REASONABLE(32);
3284 New(54,PL_savestack,REASONABLE(128),ANY);
3285 PL_savestack_ix = 0;
3286 PL_savestack_max = REASONABLE(128);
3288 New(54,PL_retstack,REASONABLE(16),OP*);
3290 PL_retstack_max = REASONABLE(16);
3298 while (PL_curstackinfo->si_next)
3299 PL_curstackinfo = PL_curstackinfo->si_next;
3300 while (PL_curstackinfo) {
3301 PERL_SI *p = PL_curstackinfo->si_prev;
3302 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3303 Safefree(PL_curstackinfo->si_cxstack);
3304 Safefree(PL_curstackinfo);
3305 PL_curstackinfo = p;
3307 Safefree(PL_tmps_stack);
3308 Safefree(PL_markstack);
3309 Safefree(PL_scopestack);
3310 Safefree(PL_savestack);
3311 Safefree(PL_retstack);
3320 lex_start(PL_linestr);
3322 PL_subname = newSVpvn("main",4);
3326 S_init_predump_symbols(pTHX)
3331 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3332 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3333 GvMULTI_on(PL_stdingv);
3334 io = GvIOp(PL_stdingv);
3335 IoTYPE(io) = IoTYPE_RDONLY;
3336 IoIFP(io) = PerlIO_stdin();
3337 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
3339 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3341 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
3344 IoTYPE(io) = IoTYPE_WRONLY;
3345 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
3347 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
3349 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3351 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3352 GvMULTI_on(PL_stderrgv);
3353 io = GvIOp(PL_stderrgv);
3354 IoTYPE(io) = IoTYPE_WRONLY;
3355 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
3356 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
3358 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3360 PL_statname = NEWSV(66,0); /* last filename we did stat on */
3363 Safefree(PL_osname);
3364 PL_osname = savepv(OSNAME);
3368 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
3373 #ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3374 char **dup_env_base = 0;
3375 int dup_env_count = 0;
3378 argc--,argv++; /* skip name of script */
3379 if (PL_doswitches) {
3380 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3383 if (argv[0][1] == '-' && !argv[0][2]) {
3387 if ((s = strchr(argv[0], '='))) {
3389 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
3392 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
3395 PL_toptarget = NEWSV(0,0);
3396 sv_upgrade(PL_toptarget, SVt_PVFM);
3397 sv_setpvn(PL_toptarget, "", 0);
3398 PL_bodytarget = NEWSV(0,0);
3399 sv_upgrade(PL_bodytarget, SVt_PVFM);
3400 sv_setpvn(PL_bodytarget, "", 0);
3401 PL_formtarget = PL_bodytarget;
3404 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
3405 #ifdef MACOS_TRADITIONAL
3406 /* $0 is not majick on a Mac */
3407 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3409 sv_setpv(GvSV(tmpgv),PL_origfilename);
3410 magicname("0", "0", 1);
3413 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV)))
3415 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
3417 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
3419 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3420 GvMULTI_on(PL_argvgv);
3421 (void)gv_AVadd(PL_argvgv);
3422 av_clear(GvAVn(PL_argvgv));
3423 for (; argc > 0; argc--,argv++) {
3424 SV *sv = newSVpv(argv[0],0);
3425 av_push(GvAVn(PL_argvgv),sv);
3426 if (PL_widesyscalls)
3427 (void)sv_utf8_decode(sv);
3430 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
3432 GvMULTI_on(PL_envgv);
3433 hv = GvHVn(PL_envgv);
3434 hv_magic(hv, Nullgv, PERL_MAGIC_env);
3435 #ifdef USE_ENVIRON_ARRAY
3436 /* Note that if the supplied env parameter is actually a copy
3437 of the global environ then it may now point to free'd memory
3438 if the environment has been modified since. To avoid this
3439 problem we treat env==NULL as meaning 'use the default'
3444 environ[0] = Nullch;
3445 #ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3448 for (env_base = env; *env; env++)
3450 if ((dup_env_base = (char **)
3451 safesysmalloc( sizeof(char *) * (dup_env_count+1) ))) {
3453 for (env = env_base, dup_env = dup_env_base;
3456 /* With environ one needs to use safesysmalloc(). */
3457 *dup_env = safesysmalloc(strlen(*env) + 1);
3458 (void)strcpy(*dup_env, *env);
3464 #endif /* NEED_ENVIRON_DUP_FOR_MODIFY */
3466 for (; *env; env++) {
3467 if (!(s = strchr(*env,'=')))
3473 sv = newSVpv(s--,0);
3474 (void)hv_store(hv, *env, s - *env, sv, 0);
3477 #ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3480 for (dup_env = dup_env_base; *dup_env; dup_env++)
3481 safesysfree(*dup_env);
3482 safesysfree(dup_env_base);
3484 #endif /* NEED_ENVIRON_DUP_FOR_MODIFY */
3485 #endif /* USE_ENVIRON_ARRAY */
3488 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
3489 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
3493 S_init_perllib(pTHX)
3498 s = PerlEnv_getenv("PERL5LIB");
3500 incpush(s, TRUE, TRUE);
3502 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE);
3504 /* Treat PERL5?LIB as a possible search list logical name -- the
3505 * "natural" VMS idiom for a Unix path string. We allow each
3506 * element to be a set of |-separated directories for compatibility.
3510 if (my_trnlnm("PERL5LIB",buf,0))
3511 do { incpush(buf,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
3513 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE);
3517 /* Use the ~-expanded versions of APPLLIB (undocumented),
3518 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
3521 incpush(APPLLIB_EXP, TRUE, TRUE);
3525 incpush(ARCHLIB_EXP, FALSE, FALSE);
3527 #ifdef MACOS_TRADITIONAL
3529 struct stat tmpstatbuf;
3530 SV * privdir = NEWSV(55, 0);
3531 char * macperl = PerlEnv_getenv("MACPERL");
3536 Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl);
3537 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3538 incpush(SvPVX(privdir), TRUE, FALSE);
3539 Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl);
3540 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3541 incpush(SvPVX(privdir), TRUE, FALSE);
3543 SvREFCNT_dec(privdir);
3546 incpush(":", FALSE, FALSE);
3549 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
3552 incpush(PRIVLIB_EXP, TRUE, FALSE);
3554 incpush(PRIVLIB_EXP, FALSE, FALSE);
3558 /* sitearch is always relative to sitelib on Windows for
3559 * DLL-based path intuition to work correctly */
3560 # if !defined(WIN32)
3561 incpush(SITEARCH_EXP, FALSE, FALSE);
3567 incpush(SITELIB_EXP, TRUE, FALSE); /* this picks up sitearch as well */
3569 incpush(SITELIB_EXP, FALSE, FALSE);
3573 #ifdef SITELIB_STEM /* Search for version-specific dirs below here */
3574 incpush(SITELIB_STEM, FALSE, TRUE);
3577 #ifdef PERL_VENDORARCH_EXP
3578 /* vendorarch is always relative to vendorlib on Windows for
3579 * DLL-based path intuition to work correctly */
3580 # if !defined(WIN32)
3581 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE);
3585 #ifdef PERL_VENDORLIB_EXP
3587 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE); /* this picks up vendorarch as well */
3589 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE);
3593 #ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
3594 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE);
3597 #ifdef PERL_OTHERLIBDIRS
3598 incpush(PERL_OTHERLIBDIRS, TRUE, TRUE);
3602 incpush(".", FALSE, FALSE);
3603 #endif /* MACOS_TRADITIONAL */
3606 #if defined(DOSISH) || defined(EPOC)
3607 # define PERLLIB_SEP ';'
3610 # define PERLLIB_SEP '|'
3612 # if defined(MACOS_TRADITIONAL)
3613 # define PERLLIB_SEP ','
3615 # define PERLLIB_SEP ':'
3619 #ifndef PERLLIB_MANGLE
3620 # define PERLLIB_MANGLE(s,n) (s)
3624 S_incpush(pTHX_ char *p, int addsubdirs, int addoldvers)
3626 SV *subdir = Nullsv;
3631 if (addsubdirs || addoldvers) {
3632 subdir = sv_newmortal();
3635 /* Break at all separators */
3637 SV *libdir = NEWSV(55,0);
3640 /* skip any consecutive separators */
3641 while ( *p == PERLLIB_SEP ) {
3642 /* Uncomment the next line for PATH semantics */
3643 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
3647 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
3648 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
3653 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
3654 p = Nullch; /* break out */
3656 #ifdef MACOS_TRADITIONAL
3657 if (!strchr(SvPVX(libdir), ':'))
3658 sv_insert(libdir, 0, 0, ":", 1);
3659 if (SvPVX(libdir)[SvCUR(libdir)-1] != ':')
3660 sv_catpv(libdir, ":");
3664 * BEFORE pushing libdir onto @INC we may first push version- and
3665 * archname-specific sub-directories.
3667 if (addsubdirs || addoldvers) {
3668 #ifdef PERL_INC_VERSION_LIST
3669 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
3670 const char *incverlist[] = { PERL_INC_VERSION_LIST };
3671 const char **incver;
3673 struct stat tmpstatbuf;
3678 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
3680 while (unix[len-1] == '/') len--; /* Cosmetic */
3681 sv_usepvn(libdir,unix,len);
3684 PerlIO_printf(Perl_error_log,
3685 "Failed to unixify @INC element \"%s\"\n",
3689 #ifdef MACOS_TRADITIONAL
3690 #define PERL_AV_SUFFIX_FMT ""
3691 #define PERL_ARCH_FMT "%s:"
3692 #define PERL_ARCH_FMT_PATH PERL_FS_VER_FMT PERL_AV_SUFFIX_FMT
3694 #define PERL_AV_SUFFIX_FMT "/"
3695 #define PERL_ARCH_FMT "/%s"
3696 #define PERL_ARCH_FMT_PATH PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT
3698 /* .../version/archname if -d .../version/archname */
3699 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH PERL_ARCH_FMT,
3701 (int)PERL_REVISION, (int)PERL_VERSION,
3702 (int)PERL_SUBVERSION, ARCHNAME);
3703 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3704 S_ISDIR(tmpstatbuf.st_mode))
3705 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3707 /* .../version if -d .../version */
3708 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH, libdir,
3709 (int)PERL_REVISION, (int)PERL_VERSION,
3710 (int)PERL_SUBVERSION);
3711 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3712 S_ISDIR(tmpstatbuf.st_mode))
3713 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3715 /* .../archname if -d .../archname */
3716 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, ARCHNAME);
3717 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3718 S_ISDIR(tmpstatbuf.st_mode))
3719 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3722 #ifdef PERL_INC_VERSION_LIST
3724 for (incver = incverlist; *incver; incver++) {
3725 /* .../xxx if -d .../xxx */
3726 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, *incver);
3727 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3728 S_ISDIR(tmpstatbuf.st_mode))
3729 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3735 /* finally push this lib directory on the end of @INC */
3736 av_push(GvAVn(PL_incgv), libdir);
3740 #ifdef USE_5005THREADS
3741 STATIC struct perl_thread *
3742 S_init_main_thread(pTHX)
3744 #if !defined(PERL_IMPLICIT_CONTEXT)
3745 struct perl_thread *thr;
3749 Newz(53, thr, 1, struct perl_thread);
3750 PL_curcop = &PL_compiling;
3751 thr->interp = PERL_GET_INTERP;
3752 thr->cvcache = newHV();
3753 thr->threadsv = newAV();
3754 /* thr->threadsvp is set when find_threadsv is called */
3755 thr->specific = newAV();
3756 thr->flags = THRf_R_JOINABLE;
3757 MUTEX_INIT(&thr->mutex);
3758 /* Handcraft thrsv similarly to mess_sv */
3759 New(53, PL_thrsv, 1, SV);
3760 Newz(53, xpv, 1, XPV);
3761 SvFLAGS(PL_thrsv) = SVt_PV;
3762 SvANY(PL_thrsv) = (void*)xpv;
3763 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
3764 SvPVX(PL_thrsv) = (char*)thr;
3765 SvCUR_set(PL_thrsv, sizeof(thr));
3766 SvLEN_set(PL_thrsv, sizeof(thr));
3767 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
3768 thr->oursv = PL_thrsv;
3769 PL_chopset = " \n-";
3772 MUTEX_LOCK(&PL_threads_mutex);
3778 MUTEX_UNLOCK(&PL_threads_mutex);
3780 #ifdef HAVE_THREAD_INTERN
3781 Perl_init_thread_intern(thr);
3784 #ifdef SET_THREAD_SELF
3785 SET_THREAD_SELF(thr);
3787 thr->self = pthread_self();
3788 #endif /* SET_THREAD_SELF */
3792 * These must come after the thread self setting
3793 * because sv_setpvn does SvTAINT and the taint
3794 * fields thread selfness being set.
3796 PL_toptarget = NEWSV(0,0);
3797 sv_upgrade(PL_toptarget, SVt_PVFM);
3798 sv_setpvn(PL_toptarget, "", 0);
3799 PL_bodytarget = NEWSV(0,0);
3800 sv_upgrade(PL_bodytarget, SVt_PVFM);
3801 sv_setpvn(PL_bodytarget, "", 0);
3802 PL_formtarget = PL_bodytarget;
3803 thr->errsv = newSVpvn("", 0);
3804 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
3807 PL_peepp = MEMBER_TO_FPTR(Perl_peep);
3808 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3809 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3810 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3811 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3812 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
3814 PL_reginterp_cnt = 0;
3818 #endif /* USE_5005THREADS */
3821 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
3824 line_t oldline = CopLINE(PL_curcop);
3830 while (AvFILL(paramList) >= 0) {
3831 cv = (CV*)av_shift(paramList);
3832 if (PL_savebegin && (paramList == PL_beginav)) {
3833 /* save PL_beginav for compiler */
3834 if (! PL_beginav_save)
3835 PL_beginav_save = newAV();
3836 av_push(PL_beginav_save, (SV*)cv);
3840 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3841 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_list_body), cv);
3847 #ifndef PERL_FLEXIBLE_EXCEPTIONS
3851 (void)SvPV(atsv, len);
3854 PL_curcop = &PL_compiling;
3855 CopLINE_set(PL_curcop, oldline);
3856 if (paramList == PL_beginav)
3857 sv_catpv(atsv, "BEGIN failed--compilation aborted");
3859 Perl_sv_catpvf(aTHX_ atsv,
3860 "%s failed--call queue aborted",
3861 paramList == PL_checkav ? "CHECK"
3862 : paramList == PL_initav ? "INIT"
3864 while (PL_scopestack_ix > oldscope)
3867 Perl_croak(aTHX_ "%s", SvPVx(atsv, n_a));
3874 /* my_exit() was called */
3875 while (PL_scopestack_ix > oldscope)
3878 PL_curstash = PL_defstash;
3879 PL_curcop = &PL_compiling;
3880 CopLINE_set(PL_curcop, oldline);
3882 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
3883 if (paramList == PL_beginav)
3884 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
3886 Perl_croak(aTHX_ "%s failed--call queue aborted",
3887 paramList == PL_checkav ? "CHECK"
3888 : paramList == PL_initav ? "INIT"
3895 PL_curcop = &PL_compiling;
3896 CopLINE_set(PL_curcop, oldline);
3899 PerlIO_printf(Perl_error_log, "panic: restartop\n");
3907 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3909 S_vcall_list_body(pTHX_ va_list args)
3911 CV *cv = va_arg(args, CV*);
3912 return call_list_body(cv);
3917 S_call_list_body(pTHX_ CV *cv)
3919 PUSHMARK(PL_stack_sp);
3920 call_sv((SV*)cv, G_EVAL|G_DISCARD);
3925 Perl_my_exit(pTHX_ U32 status)
3927 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
3928 thr, (unsigned long) status));
3937 STATUS_NATIVE_SET(status);
3944 Perl_my_failure_exit(pTHX)
3947 if (vaxc$errno & 1) {
3948 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
3949 STATUS_NATIVE_SET(44);
3952 if (!vaxc$errno && errno) /* unlikely */
3953 STATUS_NATIVE_SET(44);
3955 STATUS_NATIVE_SET(vaxc$errno);
3960 STATUS_POSIX_SET(errno);
3962 exitstatus = STATUS_POSIX >> 8;
3963 if (exitstatus & 255)
3964 STATUS_POSIX_SET(exitstatus);
3966 STATUS_POSIX_SET(255);
3973 S_my_exit_jump(pTHX)
3975 register PERL_CONTEXT *cx;
3980 SvREFCNT_dec(PL_e_script);
3981 PL_e_script = Nullsv;
3984 POPSTACK_TO(PL_mainstack);
3985 if (cxstack_ix >= 0) {
3988 POPBLOCK(cx,PL_curpm);
3996 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen)
3999 p = SvPVX(PL_e_script);
4000 nl = strchr(p, '\n');
4001 nl = (nl) ? nl+1 : SvEND(PL_e_script);
4003 filter_del(read_e_script);
4006 sv_catpvn(buf_sv, p, nl-p);
4007 sv_chop(PL_e_script, nl);