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) && !defined(PERL_MICRO)
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 #if defined(PERLIO_LAYERS)
463 /* No more IO - including error messages ! */
464 PerlIO_cleanup(aTHX);
467 /* The exit() function will do everything that needs doing. */
468 return STATUS_NATIVE_EXPORT;;
471 /* jettison our possibly duplicated environment */
473 #ifdef USE_ENVIRON_ARRAY
474 if (environ != PL_origenviron) {
477 for (i = 0; environ[i]; i++)
478 safesysfree(environ[i]);
480 /* Must use safesysfree() when working with environ. */
481 safesysfree(environ);
483 environ = PL_origenviron;
488 /* the syntax tree is shared between clones
489 * so op_free(PL_main_root) only ReREFCNT_dec's
490 * REGEXPs in the parent interpreter
491 * we need to manually ReREFCNT_dec for the clones
494 I32 i = AvFILLp(PL_regex_padav) + 1;
495 SV **ary = AvARRAY(PL_regex_padav);
499 REGEXP *re = INT2PTR(REGEXP *,SvIVX(resv));
501 if (SvFLAGS(resv) & SVf_BREAK) {
502 /* this is PL_reg_curpm, already freed
503 * flag is set in regexec.c:S_regtry
505 SvFLAGS(resv) &= ~SVf_BREAK;
507 else if(SvREPADTMP(resv)) {
508 SvREPADTMP_off(resv);
515 SvREFCNT_dec(PL_regex_padav);
516 PL_regex_padav = Nullav;
520 /* loosen bonds of global variables */
523 (void)PerlIO_close(PL_rsfp);
527 /* Filters for program text */
528 SvREFCNT_dec(PL_rsfp_filters);
529 PL_rsfp_filters = Nullav;
532 PL_preprocess = FALSE;
538 PL_doswitches = FALSE;
539 PL_dowarn = G_WARN_OFF;
540 PL_doextract = FALSE;
541 PL_sawampersand = FALSE; /* must save all match strings */
544 Safefree(PL_inplace);
546 SvREFCNT_dec(PL_patchlevel);
549 SvREFCNT_dec(PL_e_script);
550 PL_e_script = Nullsv;
553 while (--PL_origargc >= 0) {
554 Safefree(PL_origargv[PL_origargc]);
556 Safefree(PL_origargv);
558 /* magical thingies */
560 SvREFCNT_dec(PL_ofs_sv); /* $, */
563 SvREFCNT_dec(PL_ors_sv); /* $\ */
566 SvREFCNT_dec(PL_rs); /* $/ */
569 PL_multiline = 0; /* $* */
570 Safefree(PL_osname); /* $^O */
573 SvREFCNT_dec(PL_statname);
574 PL_statname = Nullsv;
577 /* defgv, aka *_ should be taken care of elsewhere */
579 /* clean up after study() */
580 SvREFCNT_dec(PL_lastscream);
581 PL_lastscream = Nullsv;
582 Safefree(PL_screamfirst);
584 Safefree(PL_screamnext);
588 Safefree(PL_efloatbuf);
589 PL_efloatbuf = Nullch;
592 /* startup and shutdown function lists */
593 SvREFCNT_dec(PL_beginav);
594 SvREFCNT_dec(PL_beginav_save);
595 SvREFCNT_dec(PL_endav);
596 SvREFCNT_dec(PL_checkav);
597 SvREFCNT_dec(PL_initav);
599 PL_beginav_save = Nullav;
604 /* shortcuts just get cleared */
610 PL_argvoutgv = Nullgv;
612 PL_stderrgv = Nullgv;
613 PL_last_in_gv = Nullgv;
615 PL_debstash = Nullhv;
617 /* reset so print() ends up where we expect */
620 SvREFCNT_dec(PL_argvout_stack);
621 PL_argvout_stack = Nullav;
623 SvREFCNT_dec(PL_modglobal);
624 PL_modglobal = Nullhv;
625 SvREFCNT_dec(PL_preambleav);
626 PL_preambleav = Nullav;
627 SvREFCNT_dec(PL_subname);
629 SvREFCNT_dec(PL_linestr);
631 SvREFCNT_dec(PL_pidstatus);
632 PL_pidstatus = Nullhv;
633 SvREFCNT_dec(PL_toptarget);
634 PL_toptarget = Nullsv;
635 SvREFCNT_dec(PL_bodytarget);
636 PL_bodytarget = Nullsv;
637 PL_formtarget = Nullsv;
639 /* free locale stuff */
640 #ifdef USE_LOCALE_COLLATE
641 Safefree(PL_collation_name);
642 PL_collation_name = Nullch;
645 #ifdef USE_LOCALE_NUMERIC
646 Safefree(PL_numeric_name);
647 PL_numeric_name = Nullch;
648 SvREFCNT_dec(PL_numeric_radix_sv);
651 /* clear utf8 character classes */
652 SvREFCNT_dec(PL_utf8_alnum);
653 SvREFCNT_dec(PL_utf8_alnumc);
654 SvREFCNT_dec(PL_utf8_ascii);
655 SvREFCNT_dec(PL_utf8_alpha);
656 SvREFCNT_dec(PL_utf8_space);
657 SvREFCNT_dec(PL_utf8_cntrl);
658 SvREFCNT_dec(PL_utf8_graph);
659 SvREFCNT_dec(PL_utf8_digit);
660 SvREFCNT_dec(PL_utf8_upper);
661 SvREFCNT_dec(PL_utf8_lower);
662 SvREFCNT_dec(PL_utf8_print);
663 SvREFCNT_dec(PL_utf8_punct);
664 SvREFCNT_dec(PL_utf8_xdigit);
665 SvREFCNT_dec(PL_utf8_mark);
666 SvREFCNT_dec(PL_utf8_toupper);
667 SvREFCNT_dec(PL_utf8_totitle);
668 SvREFCNT_dec(PL_utf8_tolower);
669 SvREFCNT_dec(PL_utf8_tofold);
670 PL_utf8_alnum = Nullsv;
671 PL_utf8_alnumc = Nullsv;
672 PL_utf8_ascii = Nullsv;
673 PL_utf8_alpha = Nullsv;
674 PL_utf8_space = Nullsv;
675 PL_utf8_cntrl = Nullsv;
676 PL_utf8_graph = Nullsv;
677 PL_utf8_digit = Nullsv;
678 PL_utf8_upper = Nullsv;
679 PL_utf8_lower = Nullsv;
680 PL_utf8_print = Nullsv;
681 PL_utf8_punct = Nullsv;
682 PL_utf8_xdigit = Nullsv;
683 PL_utf8_mark = Nullsv;
684 PL_utf8_toupper = Nullsv;
685 PL_utf8_totitle = Nullsv;
686 PL_utf8_tolower = Nullsv;
687 PL_utf8_tofold = Nullsv;
689 if (!specialWARN(PL_compiling.cop_warnings))
690 SvREFCNT_dec(PL_compiling.cop_warnings);
691 PL_compiling.cop_warnings = Nullsv;
692 if (!specialCopIO(PL_compiling.cop_io))
693 SvREFCNT_dec(PL_compiling.cop_io);
694 PL_compiling.cop_io = Nullsv;
696 Safefree(CopFILE(&PL_compiling));
697 CopFILE(&PL_compiling) = Nullch;
698 Safefree(CopSTASHPV(&PL_compiling));
700 SvREFCNT_dec(CopFILEGV(&PL_compiling));
701 CopFILEGV(&PL_compiling) = Nullgv;
702 /* cop_stash is not refcounted */
705 /* Prepare to destruct main symbol table. */
710 SvREFCNT_dec(PL_curstname);
711 PL_curstname = Nullsv;
713 /* clear queued errors */
714 SvREFCNT_dec(PL_errors);
718 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
719 if (PL_scopestack_ix != 0)
720 Perl_warner(aTHX_ WARN_INTERNAL,
721 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
722 (long)PL_scopestack_ix);
723 if (PL_savestack_ix != 0)
724 Perl_warner(aTHX_ WARN_INTERNAL,
725 "Unbalanced saves: %ld more saves than restores\n",
726 (long)PL_savestack_ix);
727 if (PL_tmps_floor != -1)
728 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced tmps: %ld more allocs than frees\n",
729 (long)PL_tmps_floor + 1);
730 if (cxstack_ix != -1)
731 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced context: %ld more PUSHes than POPs\n",
732 (long)cxstack_ix + 1);
735 /* Now absolutely destruct everything, somehow or other, loops or no. */
736 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
737 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
739 /* the 2 is for PL_fdpid and PL_strtab */
740 while (PL_sv_count > 2 && sv_clean_all())
743 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
744 SvFLAGS(PL_fdpid) |= SVt_PVAV;
745 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
746 SvFLAGS(PL_strtab) |= SVt_PVHV;
748 AvREAL_off(PL_fdpid); /* no surviving entries */
749 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
752 #ifdef HAVE_INTERP_INTERN
756 /* Destruct the global string table. */
758 /* Yell and reset the HeVAL() slots that are still holding refcounts,
759 * so that sv_free() won't fail on them.
767 max = HvMAX(PL_strtab);
768 array = HvARRAY(PL_strtab);
771 if (hent && ckWARN_d(WARN_INTERNAL)) {
772 Perl_warner(aTHX_ WARN_INTERNAL,
773 "Unbalanced string table refcount: (%d) for \"%s\"",
774 HeVAL(hent) - Nullsv, HeKEY(hent));
775 HeVAL(hent) = Nullsv;
785 SvREFCNT_dec(PL_strtab);
788 /* free the pointer table used for cloning */
789 ptr_table_free(PL_ptr_table);
792 /* free special SVs */
794 SvREFCNT(&PL_sv_yes) = 0;
795 sv_clear(&PL_sv_yes);
796 SvANY(&PL_sv_yes) = NULL;
797 SvFLAGS(&PL_sv_yes) = 0;
799 SvREFCNT(&PL_sv_no) = 0;
801 SvANY(&PL_sv_no) = NULL;
802 SvFLAGS(&PL_sv_no) = 0;
804 SvREFCNT(&PL_sv_undef) = 0;
805 SvREADONLY_off(&PL_sv_undef);
807 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
808 Perl_warner(aTHX_ WARN_INTERNAL,"Scalars leaked: %ld\n", (long)PL_sv_count);
810 #if defined(PERLIO_LAYERS)
811 /* No more IO - including error messages ! */
812 PerlIO_cleanup(aTHX);
815 Safefree(PL_origfilename);
816 Safefree(PL_reg_start_tmp);
818 Safefree(PL_reg_curpm);
819 Safefree(PL_reg_poscache);
820 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
821 Safefree(PL_op_mask);
822 Safefree(PL_psig_ptr);
823 Safefree(PL_psig_name);
824 Safefree(PL_bitcount);
825 Safefree(PL_psig_pend);
827 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
829 DEBUG_P(debprofdump());
830 #ifdef USE_5005THREADS
831 MUTEX_DESTROY(&PL_strtab_mutex);
832 MUTEX_DESTROY(&PL_sv_mutex);
833 MUTEX_DESTROY(&PL_eval_mutex);
834 MUTEX_DESTROY(&PL_cred_mutex);
835 MUTEX_DESTROY(&PL_fdpid_mutex);
836 COND_DESTROY(&PL_eval_cond);
837 #ifdef EMULATE_ATOMIC_REFCOUNTS
838 MUTEX_DESTROY(&PL_svref_mutex);
839 #endif /* EMULATE_ATOMIC_REFCOUNTS */
841 /* As the penultimate thing, free the non-arena SV for thrsv */
842 Safefree(SvPVX(PL_thrsv));
843 Safefree(SvANY(PL_thrsv));
846 #endif /* USE_5005THREADS */
848 #ifdef USE_REENTRANT_API
849 Safefree(PL_reentrant_buffer->tmbuff);
850 Safefree(PL_reentrant_buffer);
855 /* As the absolutely last thing, free the non-arena SV for mess() */
858 /* it could have accumulated taint magic */
859 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
862 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
863 moremagic = mg->mg_moremagic;
864 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
866 Safefree(mg->mg_ptr);
870 /* we know that type >= SVt_PV */
871 (void)SvOOK_off(PL_mess_sv);
872 Safefree(SvPVX(PL_mess_sv));
873 Safefree(SvANY(PL_mess_sv));
874 Safefree(PL_mess_sv);
877 return STATUS_NATIVE_EXPORT;
881 =for apidoc perl_free
883 Releases a Perl interpreter. See L<perlembed>.
891 #if defined(WIN32) || defined(NETWARE)
892 # if defined(PERL_IMPLICIT_SYS)
894 void *host = nw_internal_host;
896 void *host = w32_internal_host;
900 nw5_delete_internal_host(host);
902 win32_delete_internal_host(host);
913 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
915 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
916 PL_exitlist[PL_exitlistlen].fn = fn;
917 PL_exitlist[PL_exitlistlen].ptr = ptr;
922 =for apidoc perl_parse
924 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
930 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
935 #ifdef USE_5005THREADS
939 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
942 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
943 setuid perl scripts securely.\n");
949 /* we copy rather than point to argv
950 * since perl_clone will copy and perl_destruct
951 * has no way of knowing if we've made a copy or
955 New(0, PL_origargv, i+1, char*);
956 PL_origargv[i] = '\0';
958 PL_origargv[i] = savepv(argv[i]);
966 /* Come here if running an undumped a.out. */
968 PL_origfilename = savepv(argv[0]);
969 PL_do_undump = FALSE;
970 cxstack_ix = -1; /* start label stack again */
972 init_postdump_symbols(argc,argv,env);
977 PL_curpad = AvARRAY(PL_comppad);
978 op_free(PL_main_root);
979 PL_main_root = Nullop;
981 PL_main_start = Nullop;
982 SvREFCNT_dec(PL_main_cv);
986 oldscope = PL_scopestack_ix;
987 PL_dowarn = G_WARN_OFF;
989 #ifdef PERL_FLEXIBLE_EXCEPTIONS
990 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
996 #ifndef PERL_FLEXIBLE_EXCEPTIONS
997 parse_body(env,xsinit);
1000 call_list(oldscope, PL_checkav);
1007 /* my_exit() was called */
1008 while (PL_scopestack_ix > oldscope)
1011 PL_curstash = PL_defstash;
1013 call_list(oldscope, PL_checkav);
1014 ret = STATUS_NATIVE_EXPORT;
1017 PerlIO_printf(Perl_error_log, "panic: top_env\n");
1025 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1027 S_vparse_body(pTHX_ va_list args)
1029 char **env = va_arg(args, char**);
1030 XSINIT_t xsinit = va_arg(args, XSINIT_t);
1032 return parse_body(env, xsinit);
1037 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
1039 int argc = PL_origargc;
1040 char **argv = PL_origargv;
1041 char *scriptname = NULL;
1043 VOL bool dosearch = FALSE;
1044 char *validarg = "";
1048 char *cddir = Nullch;
1050 sv_setpvn(PL_linestr,"",0);
1051 sv = newSVpvn("",0); /* first used for -I flags */
1055 for (argc--,argv++; argc > 0; argc--,argv++) {
1056 if (argv[0][0] != '-' || !argv[0][1])
1060 validarg = " PHOOEY ";
1069 win32_argv2utf8(argc-1, argv+1);
1072 #ifndef PERL_STRICT_CR
1096 if ((s = moreswitches(s)))
1106 #ifdef MACOS_TRADITIONAL
1107 /* ignore -e for Dev:Pseudo argument */
1108 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
1111 if (PL_euid != PL_uid || PL_egid != PL_gid)
1112 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
1114 PL_e_script = newSVpvn("",0);
1115 filter_add(read_e_script, NULL);
1118 sv_catpv(PL_e_script, s);
1120 sv_catpv(PL_e_script, argv[1]);
1124 Perl_croak(aTHX_ "No code specified for -e");
1125 sv_catpv(PL_e_script, "\n");
1128 case 'I': /* -I handled both here and in moreswitches() */
1130 if (!*++s && (s=argv[1]) != Nullch) {
1135 STRLEN len = strlen(s);
1136 p = savepvn(s, len);
1137 incpush(p, TRUE, TRUE);
1138 sv_catpvn(sv, "-I", 2);
1139 sv_catpvn(sv, p, len);
1140 sv_catpvn(sv, " ", 1);
1144 Perl_croak(aTHX_ "No directory specified for -I");
1148 PL_preprocess = TRUE;
1158 PL_preambleav = newAV();
1159 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
1161 PL_Sv = newSVpv("print myconfig();",0);
1163 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
1165 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
1167 sv_catpv(PL_Sv,"\" Compile-time options:");
1169 sv_catpv(PL_Sv," DEBUGGING");
1171 # ifdef MULTIPLICITY
1172 sv_catpv(PL_Sv," MULTIPLICITY");
1174 # ifdef USE_5005THREADS
1175 sv_catpv(PL_Sv," USE_5005THREADS");
1177 # ifdef USE_ITHREADS
1178 sv_catpv(PL_Sv," USE_ITHREADS");
1180 # ifdef USE_64_BIT_INT
1181 sv_catpv(PL_Sv," USE_64_BIT_INT");
1183 # ifdef USE_64_BIT_ALL
1184 sv_catpv(PL_Sv," USE_64_BIT_ALL");
1186 # ifdef USE_LONG_DOUBLE
1187 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1189 # ifdef USE_LARGE_FILES
1190 sv_catpv(PL_Sv," USE_LARGE_FILES");
1193 sv_catpv(PL_Sv," USE_SOCKS");
1195 # ifdef PERL_IMPLICIT_CONTEXT
1196 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1198 # ifdef PERL_IMPLICIT_SYS
1199 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1201 sv_catpv(PL_Sv,"\\n\",");
1203 #if defined(LOCAL_PATCH_COUNT)
1204 if (LOCAL_PATCH_COUNT > 0) {
1206 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
1207 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1208 if (PL_localpatches[i])
1209 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
1213 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
1216 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
1218 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
1221 sv_catpv(PL_Sv, "; \
1223 @env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; ");
1226 push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
1229 print \" \\%ENV:\\n @env\\n\" if @env; \
1230 print \" \\@INC:\\n @INC\\n\";");
1233 PL_Sv = newSVpv("config_vars(qw(",0);
1234 sv_catpv(PL_Sv, ++s);
1235 sv_catpv(PL_Sv, "))");
1238 av_push(PL_preambleav, PL_Sv);
1239 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1242 PL_doextract = TRUE;
1250 if (!*++s || isSPACE(*s)) {
1254 /* catch use of gnu style long options */
1255 if (strEQ(s, "version")) {
1259 if (strEQ(s, "help")) {
1266 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1272 #ifndef SECURE_INTERNAL_GETENV
1275 (s = PerlEnv_getenv("PERL5OPT")))
1280 if (*s == '-' && *(s+1) == 'T')
1283 char *popt_copy = Nullch;
1296 if (!strchr("DIMUdmw", *s))
1297 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
1301 popt_copy = SvPVX(sv_2mortal(newSVpv(popt,0)));
1302 s = popt_copy + (s - popt);
1303 d = popt_copy + (d - popt);
1315 scriptname = argv[0];
1318 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1320 else if (scriptname == Nullch) {
1322 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1330 open_script(scriptname,dosearch,sv,&fdscript);
1332 validate_suid(validarg, scriptname,fdscript);
1335 #if defined(SIGCHLD) || defined(SIGCLD)
1338 # define SIGCHLD SIGCLD
1340 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1341 if (sigstate == SIG_IGN) {
1342 if (ckWARN(WARN_SIGNAL))
1343 Perl_warner(aTHX_ WARN_SIGNAL,
1344 "Can't ignore signal CHLD, forcing to default");
1345 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1351 #ifdef MACOS_TRADITIONAL
1352 if (PL_doextract || gMacPerl_AlwaysExtract) {
1357 if (cddir && PerlDir_chdir(cddir) < 0)
1358 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1362 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1363 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1364 CvUNIQUE_on(PL_compcv);
1366 PL_comppad = newAV();
1367 av_push(PL_comppad, Nullsv);
1368 PL_curpad = AvARRAY(PL_comppad);
1369 PL_comppad_name = newAV();
1370 PL_comppad_name_fill = 0;
1371 PL_min_intro_pending = 0;
1373 #ifdef USE_5005THREADS
1374 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
1375 PL_curpad[0] = (SV*)newAV();
1376 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1377 CvOWNER(PL_compcv) = 0;
1378 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1379 MUTEX_INIT(CvMUTEXP(PL_compcv));
1380 #endif /* USE_5005THREADS */
1382 comppadlist = newAV();
1383 AvREAL_off(comppadlist);
1384 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1385 av_store(comppadlist, 1, (SV*)PL_comppad);
1386 CvPADLIST(PL_compcv) = comppadlist;
1389 boot_core_UNIVERSAL();
1391 boot_core_xsutils();
1395 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
1397 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
1403 # ifdef HAS_SOCKS5_INIT
1404 socks5_init(argv[0]);
1410 init_predump_symbols();
1411 /* init_postdump_symbols not currently designed to be called */
1412 /* more than once (ENV isn't cleared first, for example) */
1413 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
1415 init_postdump_symbols(argc,argv,env);
1419 /* now parse the script */
1421 SETERRNO(0,SS$_NORMAL);
1423 #ifdef MACOS_TRADITIONAL
1424 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1426 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1428 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1429 MacPerl_MPWFileName(PL_origfilename));
1433 if (yyparse() || PL_error_count) {
1435 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
1437 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1442 CopLINE_set(PL_curcop, 0);
1443 PL_curstash = PL_defstash;
1444 PL_preprocess = FALSE;
1446 SvREFCNT_dec(PL_e_script);
1447 PL_e_script = Nullsv;
1451 Not sure that this is still the right place to do this now that we
1452 no longer use PL_nrs. HVDS 2001/09/09
1454 sv_setsv(get_sv("/", TRUE), PL_rs);
1460 SAVECOPFILE(PL_curcop);
1461 SAVECOPLINE(PL_curcop);
1462 gv_check(PL_defstash);
1469 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1470 dump_mstats("after compilation:");
1479 =for apidoc perl_run
1481 Tells a Perl interpreter to run. See L<perlembed>.
1492 #ifdef USE_5005THREADS
1496 oldscope = PL_scopestack_ix;
1501 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1503 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1509 cxstack_ix = -1; /* start context stack again */
1511 case 0: /* normal completion */
1512 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1517 case 2: /* my_exit() */
1518 while (PL_scopestack_ix > oldscope)
1521 PL_curstash = PL_defstash;
1522 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
1523 PL_endav && !PL_minus_c)
1524 call_list(oldscope, PL_endav);
1526 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1527 dump_mstats("after execution: ");
1529 ret = STATUS_NATIVE_EXPORT;
1533 POPSTACK_TO(PL_mainstack);
1536 PerlIO_printf(Perl_error_log, "panic: restartop\n");
1546 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1548 S_vrun_body(pTHX_ va_list args)
1550 I32 oldscope = va_arg(args, I32);
1552 return run_body(oldscope);
1558 S_run_body(pTHX_ I32 oldscope)
1560 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
1561 PL_sawampersand ? "Enabling" : "Omitting"));
1563 if (!PL_restartop) {
1564 DEBUG_x(dump_all());
1565 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
1566 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1570 #ifdef MACOS_TRADITIONAL
1571 PerlIO_printf(Perl_error_log, "# %s syntax OK\n", MacPerl_MPWFileName(PL_origfilename));
1573 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
1577 if (PERLDB_SINGLE && PL_DBsingle)
1578 sv_setiv(PL_DBsingle, 1);
1580 call_list(oldscope, PL_initav);
1586 PL_op = PL_restartop;
1590 else if (PL_main_start) {
1591 CvDEPTH(PL_main_cv) = 1;
1592 PL_op = PL_main_start;
1602 =for apidoc p||get_sv
1604 Returns the SV of the specified Perl scalar. If C<create> is set and the
1605 Perl variable does not exist then it will be created. If C<create> is not
1606 set and the variable does not exist then NULL is returned.
1612 Perl_get_sv(pTHX_ const char *name, I32 create)
1615 #ifdef USE_5005THREADS
1616 if (name[1] == '\0' && !isALPHA(name[0])) {
1617 PADOFFSET tmp = find_threadsv(name);
1618 if (tmp != NOT_IN_PAD)
1619 return THREADSV(tmp);
1621 #endif /* USE_5005THREADS */
1622 gv = gv_fetchpv(name, create, SVt_PV);
1629 =for apidoc p||get_av
1631 Returns the AV of the specified Perl array. If C<create> is set and the
1632 Perl variable does not exist then it will be created. If C<create> is not
1633 set and the variable does not exist then NULL is returned.
1639 Perl_get_av(pTHX_ const char *name, I32 create)
1641 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1650 =for apidoc p||get_hv
1652 Returns the HV of the specified Perl hash. If C<create> is set and the
1653 Perl variable does not exist then it will be created. If C<create> is not
1654 set and the variable does not exist then NULL is returned.
1660 Perl_get_hv(pTHX_ const char *name, I32 create)
1662 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1671 =for apidoc p||get_cv
1673 Returns the CV of the specified Perl subroutine. If C<create> is set and
1674 the Perl subroutine does not exist then it will be declared (which has the
1675 same effect as saying C<sub name;>). If C<create> is not set and the
1676 subroutine does not exist then NULL is returned.
1682 Perl_get_cv(pTHX_ const char *name, I32 create)
1684 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
1685 /* XXX unsafe for threads if eval_owner isn't held */
1686 /* XXX this is probably not what they think they're getting.
1687 * It has the same effect as "sub name;", i.e. just a forward
1689 if (create && !GvCVu(gv))
1690 return newSUB(start_subparse(FALSE, 0),
1691 newSVOP(OP_CONST, 0, newSVpv(name,0)),
1699 /* Be sure to refetch the stack pointer after calling these routines. */
1702 =for apidoc p||call_argv
1704 Performs a callback to the specified Perl sub. See L<perlcall>.
1710 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
1712 /* See G_* flags in cop.h */
1713 /* null terminated arg list */
1720 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
1725 return call_pv(sub_name, flags);
1729 =for apidoc p||call_pv
1731 Performs a callback to the specified Perl sub. See L<perlcall>.
1737 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
1738 /* name of the subroutine */
1739 /* See G_* flags in cop.h */
1741 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
1745 =for apidoc p||call_method
1747 Performs a callback to the specified Perl method. The blessed object must
1748 be on the stack. See L<perlcall>.
1754 Perl_call_method(pTHX_ const char *methname, I32 flags)
1755 /* name of the subroutine */
1756 /* See G_* flags in cop.h */
1758 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
1761 /* May be called with any of a CV, a GV, or an SV containing the name. */
1763 =for apidoc p||call_sv
1765 Performs a callback to the Perl sub whose name is in the SV. See
1772 Perl_call_sv(pTHX_ SV *sv, I32 flags)
1773 /* See G_* flags in cop.h */
1776 LOGOP myop; /* fake syntax tree node */
1779 volatile I32 retval = 0;
1781 bool oldcatch = CATCH_GET;
1786 if (flags & G_DISCARD) {
1791 Zero(&myop, 1, LOGOP);
1792 myop.op_next = Nullop;
1793 if (!(flags & G_NOARGS))
1794 myop.op_flags |= OPf_STACKED;
1795 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1796 (flags & G_ARRAY) ? OPf_WANT_LIST :
1801 EXTEND(PL_stack_sp, 1);
1802 *++PL_stack_sp = sv;
1804 oldscope = PL_scopestack_ix;
1806 if (PERLDB_SUB && PL_curstash != PL_debstash
1807 /* Handle first BEGIN of -d. */
1808 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
1809 /* Try harder, since this may have been a sighandler, thus
1810 * curstash may be meaningless. */
1811 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
1812 && !(flags & G_NODEBUG))
1813 PL_op->op_private |= OPpENTERSUB_DB;
1815 if (flags & G_METHOD) {
1816 Zero(&method_op, 1, UNOP);
1817 method_op.op_next = PL_op;
1818 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1819 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
1820 PL_op = (OP*)&method_op;
1823 if (!(flags & G_EVAL)) {
1825 call_body((OP*)&myop, FALSE);
1826 retval = PL_stack_sp - (PL_stack_base + oldmark);
1827 CATCH_SET(oldcatch);
1830 myop.op_other = (OP*)&myop;
1832 /* we're trying to emulate pp_entertry() here */
1834 register PERL_CONTEXT *cx;
1835 I32 gimme = GIMME_V;
1840 push_return(Nullop);
1841 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
1843 PL_eval_root = PL_op; /* Only needed so that goto works right. */
1845 PL_in_eval = EVAL_INEVAL;
1846 if (flags & G_KEEPERR)
1847 PL_in_eval |= EVAL_KEEPERR;
1853 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1855 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1862 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1864 call_body((OP*)&myop, FALSE);
1866 retval = PL_stack_sp - (PL_stack_base + oldmark);
1867 if (!(flags & G_KEEPERR))
1874 /* my_exit() was called */
1875 PL_curstash = PL_defstash;
1878 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1879 Perl_croak(aTHX_ "Callback called exit");
1884 PL_op = PL_restartop;
1888 PL_stack_sp = PL_stack_base + oldmark;
1889 if (flags & G_ARRAY)
1893 *++PL_stack_sp = &PL_sv_undef;
1898 if (PL_scopestack_ix > oldscope) {
1902 register PERL_CONTEXT *cx;
1914 if (flags & G_DISCARD) {
1915 PL_stack_sp = PL_stack_base + oldmark;
1924 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1926 S_vcall_body(pTHX_ va_list args)
1928 OP *myop = va_arg(args, OP*);
1929 int is_eval = va_arg(args, int);
1931 call_body(myop, is_eval);
1937 S_call_body(pTHX_ OP *myop, int is_eval)
1939 if (PL_op == myop) {
1941 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
1943 PL_op = Perl_pp_entersub(aTHX); /* this does */
1949 /* Eval a string. The G_EVAL flag is always assumed. */
1952 =for apidoc p||eval_sv
1954 Tells Perl to C<eval> the string in the SV.
1960 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
1962 /* See G_* flags in cop.h */
1965 UNOP myop; /* fake syntax tree node */
1966 volatile I32 oldmark = SP - PL_stack_base;
1967 volatile I32 retval = 0;
1973 if (flags & G_DISCARD) {
1980 Zero(PL_op, 1, UNOP);
1981 EXTEND(PL_stack_sp, 1);
1982 *++PL_stack_sp = sv;
1983 oldscope = PL_scopestack_ix;
1985 if (!(flags & G_NOARGS))
1986 myop.op_flags = OPf_STACKED;
1987 myop.op_next = Nullop;
1988 myop.op_type = OP_ENTEREVAL;
1989 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1990 (flags & G_ARRAY) ? OPf_WANT_LIST :
1992 if (flags & G_KEEPERR)
1993 myop.op_flags |= OPf_SPECIAL;
1995 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1997 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
2004 #ifndef PERL_FLEXIBLE_EXCEPTIONS
2006 call_body((OP*)&myop,TRUE);
2008 retval = PL_stack_sp - (PL_stack_base + oldmark);
2009 if (!(flags & G_KEEPERR))
2016 /* my_exit() was called */
2017 PL_curstash = PL_defstash;
2020 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
2021 Perl_croak(aTHX_ "Callback called exit");
2026 PL_op = PL_restartop;
2030 PL_stack_sp = PL_stack_base + oldmark;
2031 if (flags & G_ARRAY)
2035 *++PL_stack_sp = &PL_sv_undef;
2041 if (flags & G_DISCARD) {
2042 PL_stack_sp = PL_stack_base + oldmark;
2052 =for apidoc p||eval_pv
2054 Tells Perl to C<eval> the given string and return an SV* result.
2060 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
2063 SV* sv = newSVpv(p, 0);
2065 eval_sv(sv, G_SCALAR);
2072 if (croak_on_error && SvTRUE(ERRSV)) {
2074 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
2080 /* Require a module. */
2083 =for apidoc p||require_pv
2085 Tells Perl to C<require> the file named by the string argument. It is
2086 analogous to the Perl code C<eval "require '$file'">. It's even
2087 implemented that way; consider using Perl_load_module instead.
2092 Perl_require_pv(pTHX_ const char *pv)
2096 PUSHSTACKi(PERLSI_REQUIRE);
2098 sv = sv_newmortal();
2099 sv_setpv(sv, "require '");
2102 eval_sv(sv, G_DISCARD);
2108 Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
2112 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
2113 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
2117 S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
2119 /* This message really ought to be max 23 lines.
2120 * Removed -h because the user already knows that option. Others? */
2122 static char *usage_msg[] = {
2123 "-0[octal] specify record separator (\\0, if no argument)",
2124 "-a autosplit mode with -n or -p (splits $_ into @F)",
2125 "-C enable native wide character system interfaces",
2126 "-c check syntax only (runs BEGIN and CHECK blocks)",
2127 "-d[:debugger] run program under debugger",
2128 "-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2129 "-e 'command' one line of program (several -e's allowed, omit programfile)",
2130 "-F/pattern/ split() pattern for -a switch (//'s are optional)",
2131 "-i[extension] edit <> files in place (makes backup if extension supplied)",
2132 "-Idirectory specify @INC/#include directory (several -I's allowed)",
2133 "-l[octal] enable line ending processing, specifies line terminator",
2134 "-[mM][-]module execute `use/no module...' before executing program",
2135 "-n assume 'while (<>) { ... }' loop around program",
2136 "-p assume loop like -n but print line also, like sed",
2137 "-P run program through C preprocessor before compilation",
2138 "-s enable rudimentary parsing for switches after programfile",
2139 "-S look for programfile using PATH environment variable",
2140 "-T enable tainting checks",
2141 "-u dump core after parsing program",
2142 "-U allow unsafe operations",
2143 "-v print version, subversion (includes VERY IMPORTANT perl info)",
2144 "-V[:variable] print configuration summary (or a single Config.pm variable)",
2145 "-w enable many useful warnings (RECOMMENDED)",
2146 "-W enable all warnings",
2147 "-X disable all warnings",
2148 "-x[directory] strip off text before #!perl line and perhaps cd to directory",
2152 char **p = usage_msg;
2154 PerlIO_printf(PerlIO_stdout(),
2155 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2158 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
2161 /* This routine handles any switches that can be given during run */
2164 Perl_moreswitches(pTHX_ char *s)
2174 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
2175 SvREFCNT_dec(PL_rs);
2176 if (rschar & ~((U8)~0))
2177 PL_rs = &PL_sv_undef;
2178 else if (!rschar && numlen >= 2)
2179 PL_rs = newSVpvn("", 0);
2182 PL_rs = newSVpvn(&ch, 1);
2187 PL_widesyscalls = TRUE;
2193 while (*s && !isSPACE(*s)) ++s;
2195 PL_splitstr = savepv(PL_splitstr);
2208 /* The following permits -d:Mod to accepts arguments following an =
2209 in the fashion that -MSome::Mod does. */
2210 if (*s == ':' || *s == '=') {
2213 sv = newSVpv("use Devel::", 0);
2215 /* We now allow -d:Module=Foo,Bar */
2216 while(isALNUM(*s) || *s==':') ++s;
2218 sv_catpv(sv, start);
2220 sv_catpvn(sv, start, s-start);
2221 sv_catpv(sv, " split(/,/,q{");
2226 my_setenv("PERL5DB", SvPV(sv, PL_na));
2229 PL_perldb = PERLDB_ALL;
2237 if (isALPHA(s[1])) {
2238 /* if adding extra options, remember to update DEBUG_MASK */
2239 static char debopts[] = "psltocPmfrxuLHXDSTR";
2242 for (s++; *s && (d = strchr(debopts,*s)); s++)
2243 PL_debug |= 1 << (d - debopts);
2246 PL_debug = atoi(s+1);
2247 for (s++; isDIGIT(*s); s++) ;
2249 PL_debug |= DEBUG_TOP_FLAG;
2251 if (ckWARN_d(WARN_DEBUGGING))
2252 Perl_warner(aTHX_ WARN_DEBUGGING,
2253 "Recompile perl with -DDEBUGGING to use -D switch\n");
2254 for (s++; isALNUM(*s); s++) ;
2260 usage(PL_origargv[0]);
2264 Safefree(PL_inplace);
2265 PL_inplace = savepv(s+1);
2267 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
2270 if (*s == '-') /* Additional switches on #! line. */
2274 case 'I': /* -I handled both here and in parse_perl() */
2277 while (*s && isSPACE(*s))
2282 /* ignore trailing spaces (possibly followed by other switches) */
2284 for (e = p; *e && !isSPACE(*e); e++) ;
2288 } while (*p && *p != '-');
2289 e = savepvn(s, e-s);
2290 incpush(e, TRUE, TRUE);
2297 Perl_croak(aTHX_ "No directory specified for -I");
2303 SvREFCNT_dec(PL_ors_sv);
2308 PL_ors_sv = newSVpvn("\n",1);
2309 numlen = 3 + (*s == '0');
2310 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
2314 if (RsPARA(PL_rs)) {
2315 PL_ors_sv = newSVpvn("\n\n",2);
2318 PL_ors_sv = newSVsv(PL_rs);
2323 forbid_setid("-M"); /* XXX ? */
2326 forbid_setid("-m"); /* XXX ? */
2331 /* -M-foo == 'no foo' */
2332 if (*s == '-') { use = "no "; ++s; }
2333 sv = newSVpv(use,0);
2335 /* We allow -M'Module qw(Foo Bar)' */
2336 while(isALNUM(*s) || *s==':') ++s;
2338 sv_catpv(sv, start);
2339 if (*(start-1) == 'm') {
2341 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
2342 sv_catpv( sv, " ()");
2346 Perl_croak(aTHX_ "Module name required with -%c option",
2348 sv_catpvn(sv, start, s-start);
2349 sv_catpv(sv, " split(/,/,q{");
2355 PL_preambleav = newAV();
2356 av_push(PL_preambleav, sv);
2359 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
2371 PL_doswitches = TRUE;
2376 Perl_croak(aTHX_ "Too late for \"-T\" option");
2380 #ifdef MACOS_TRADITIONAL
2381 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2383 PL_do_undump = TRUE;
2392 PerlIO_printf(PerlIO_stdout(),
2393 Perl_form(aTHX_ "\nThis is perl, v%"VDf" built for %s",
2394 PL_patchlevel, ARCHNAME));
2396 /* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
2397 PerlIO_printf(PerlIO_stdout(),
2398 Perl_form(aTHX_ "\nThis is perl, version %vd\n", PL_patchlevel));
2399 PerlIO_printf(PerlIO_stdout(),
2400 Perl_form(aTHX_ " built under %s at %s %s\n",
2401 OSNAME, __DATE__, __TIME__));
2402 PerlIO_printf(PerlIO_stdout(),
2403 Perl_form(aTHX_ " OS Specific Release: %s\n",
2407 #if defined(LOCAL_PATCH_COUNT)
2408 if (LOCAL_PATCH_COUNT > 0)
2409 PerlIO_printf(PerlIO_stdout(),
2410 "\n(with %d registered patch%s, "
2411 "see perl -V for more detail)",
2412 (int)LOCAL_PATCH_COUNT,
2413 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
2416 PerlIO_printf(PerlIO_stdout(),
2417 "\n\nCopyright 1987-2001, Larry Wall\n");
2418 #ifdef MACOS_TRADITIONAL
2419 PerlIO_printf(PerlIO_stdout(),
2420 "\nMac OS port Copyright 1991-2001, Matthias Neeracher;\n"
2421 "maintained by Chris Nandor\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 Perl_init_argv_symbols(pTHX_ register int argc, register char **argv)
3379 argc--,argv++; /* skip name of script */
3380 if (PL_doswitches) {
3381 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3384 if (argv[0][1] == '-' && !argv[0][2]) {
3388 if ((s = strchr(argv[0], '='))) {
3390 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
3393 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
3396 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3397 GvMULTI_on(PL_argvgv);
3398 (void)gv_AVadd(PL_argvgv);
3399 av_clear(GvAVn(PL_argvgv));
3400 for (; argc > 0; argc--,argv++) {
3401 SV *sv = newSVpv(argv[0],0);
3402 av_push(GvAVn(PL_argvgv),sv);
3403 if (PL_widesyscalls)
3404 (void)sv_utf8_decode(sv);
3410 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
3415 #ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3416 char **dup_env_base = 0;
3417 int dup_env_count = 0;
3420 PL_toptarget = NEWSV(0,0);
3421 sv_upgrade(PL_toptarget, SVt_PVFM);
3422 sv_setpvn(PL_toptarget, "", 0);
3423 PL_bodytarget = NEWSV(0,0);
3424 sv_upgrade(PL_bodytarget, SVt_PVFM);
3425 sv_setpvn(PL_bodytarget, "", 0);
3426 PL_formtarget = PL_bodytarget;
3430 init_argv_symbols(argc,argv);
3432 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
3433 #ifdef MACOS_TRADITIONAL
3434 /* $0 is not majick on a Mac */
3435 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3437 sv_setpv(GvSV(tmpgv),PL_origfilename);
3438 magicname("0", "0", 1);
3441 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV)))
3443 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
3445 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
3447 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
3449 GvMULTI_on(PL_envgv);
3450 hv = GvHVn(PL_envgv);
3451 hv_magic(hv, Nullgv, PERL_MAGIC_env);
3452 #ifdef USE_ENVIRON_ARRAY
3453 /* Note that if the supplied env parameter is actually a copy
3454 of the global environ then it may now point to free'd memory
3455 if the environment has been modified since. To avoid this
3456 problem we treat env==NULL as meaning 'use the default'
3461 environ[0] = Nullch;
3462 #ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3465 for (env_base = env; *env; env++)
3467 if ((dup_env_base = (char **)
3468 safesysmalloc( sizeof(char *) * (dup_env_count+1) ))) {
3470 for (env = env_base, dup_env = dup_env_base;
3473 /* With environ one needs to use safesysmalloc(). */
3474 *dup_env = safesysmalloc(strlen(*env) + 1);
3475 (void)strcpy(*dup_env, *env);
3481 #endif /* NEED_ENVIRON_DUP_FOR_MODIFY */
3483 for (; *env; env++) {
3484 if (!(s = strchr(*env,'=')))
3490 sv = newSVpv(s--,0);
3491 (void)hv_store(hv, *env, s - *env, sv, 0);
3494 #ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3497 for (dup_env = dup_env_base; *dup_env; dup_env++)
3498 safesysfree(*dup_env);
3499 safesysfree(dup_env_base);
3501 #endif /* NEED_ENVIRON_DUP_FOR_MODIFY */
3502 #endif /* USE_ENVIRON_ARRAY */
3505 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
3506 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
3510 S_init_perllib(pTHX)
3515 s = PerlEnv_getenv("PERL5LIB");
3517 incpush(s, TRUE, TRUE);
3519 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE);
3521 /* Treat PERL5?LIB as a possible search list logical name -- the
3522 * "natural" VMS idiom for a Unix path string. We allow each
3523 * element to be a set of |-separated directories for compatibility.
3527 if (my_trnlnm("PERL5LIB",buf,0))
3528 do { incpush(buf,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
3530 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE);
3534 /* Use the ~-expanded versions of APPLLIB (undocumented),
3535 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
3538 incpush(APPLLIB_EXP, TRUE, TRUE);
3542 incpush(ARCHLIB_EXP, FALSE, FALSE);
3544 #ifdef MACOS_TRADITIONAL
3546 struct stat tmpstatbuf;
3547 SV * privdir = NEWSV(55, 0);
3548 char * macperl = PerlEnv_getenv("MACPERL");
3553 Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl);
3554 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3555 incpush(SvPVX(privdir), TRUE, FALSE);
3556 Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl);
3557 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3558 incpush(SvPVX(privdir), TRUE, FALSE);
3560 SvREFCNT_dec(privdir);
3563 incpush(":", FALSE, FALSE);
3566 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
3569 incpush(PRIVLIB_EXP, TRUE, FALSE);
3571 incpush(PRIVLIB_EXP, FALSE, FALSE);
3575 /* sitearch is always relative to sitelib on Windows for
3576 * DLL-based path intuition to work correctly */
3577 # if !defined(WIN32)
3578 incpush(SITEARCH_EXP, FALSE, FALSE);
3584 incpush(SITELIB_EXP, TRUE, FALSE); /* this picks up sitearch as well */
3586 incpush(SITELIB_EXP, FALSE, FALSE);
3590 #ifdef SITELIB_STEM /* Search for version-specific dirs below here */
3591 incpush(SITELIB_STEM, FALSE, TRUE);
3594 #ifdef PERL_VENDORARCH_EXP
3595 /* vendorarch is always relative to vendorlib on Windows for
3596 * DLL-based path intuition to work correctly */
3597 # if !defined(WIN32)
3598 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE);
3602 #ifdef PERL_VENDORLIB_EXP
3604 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE); /* this picks up vendorarch as well */
3606 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE);
3610 #ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
3611 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE);
3614 #ifdef PERL_OTHERLIBDIRS
3615 incpush(PERL_OTHERLIBDIRS, TRUE, TRUE);
3619 incpush(".", FALSE, FALSE);
3620 #endif /* MACOS_TRADITIONAL */
3623 #if defined(DOSISH) || defined(EPOC)
3624 # define PERLLIB_SEP ';'
3627 # define PERLLIB_SEP '|'
3629 # if defined(MACOS_TRADITIONAL)
3630 # define PERLLIB_SEP ','
3632 # define PERLLIB_SEP ':'
3636 #ifndef PERLLIB_MANGLE
3637 # define PERLLIB_MANGLE(s,n) (s)
3641 S_incpush(pTHX_ char *p, int addsubdirs, int addoldvers)
3643 SV *subdir = Nullsv;
3648 if (addsubdirs || addoldvers) {
3649 subdir = sv_newmortal();
3652 /* Break at all separators */
3654 SV *libdir = NEWSV(55,0);
3657 /* skip any consecutive separators */
3658 while ( *p == PERLLIB_SEP ) {
3659 /* Uncomment the next line for PATH semantics */
3660 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
3664 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
3665 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
3670 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
3671 p = Nullch; /* break out */
3673 #ifdef MACOS_TRADITIONAL
3674 if (!strchr(SvPVX(libdir), ':'))
3675 sv_insert(libdir, 0, 0, ":", 1);
3676 if (SvPVX(libdir)[SvCUR(libdir)-1] != ':')
3677 sv_catpv(libdir, ":");
3681 * BEFORE pushing libdir onto @INC we may first push version- and
3682 * archname-specific sub-directories.
3684 if (addsubdirs || addoldvers) {
3685 #ifdef PERL_INC_VERSION_LIST
3686 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
3687 const char *incverlist[] = { PERL_INC_VERSION_LIST };
3688 const char **incver;
3690 struct stat tmpstatbuf;
3695 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
3697 while (unix[len-1] == '/') len--; /* Cosmetic */
3698 sv_usepvn(libdir,unix,len);
3701 PerlIO_printf(Perl_error_log,
3702 "Failed to unixify @INC element \"%s\"\n",
3706 #ifdef MACOS_TRADITIONAL
3707 #define PERL_AV_SUFFIX_FMT ""
3708 #define PERL_ARCH_FMT "%s:"
3709 #define PERL_ARCH_FMT_PATH PERL_FS_VER_FMT PERL_AV_SUFFIX_FMT
3711 #define PERL_AV_SUFFIX_FMT "/"
3712 #define PERL_ARCH_FMT "/%s"
3713 #define PERL_ARCH_FMT_PATH PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT
3715 /* .../version/archname if -d .../version/archname */
3716 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH PERL_ARCH_FMT,
3718 (int)PERL_REVISION, (int)PERL_VERSION,
3719 (int)PERL_SUBVERSION, ARCHNAME);
3720 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3721 S_ISDIR(tmpstatbuf.st_mode))
3722 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3724 /* .../version if -d .../version */
3725 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH, libdir,
3726 (int)PERL_REVISION, (int)PERL_VERSION,
3727 (int)PERL_SUBVERSION);
3728 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3729 S_ISDIR(tmpstatbuf.st_mode))
3730 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3732 /* .../archname if -d .../archname */
3733 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, ARCHNAME);
3734 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3735 S_ISDIR(tmpstatbuf.st_mode))
3736 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3739 #ifdef PERL_INC_VERSION_LIST
3741 for (incver = incverlist; *incver; incver++) {
3742 /* .../xxx if -d .../xxx */
3743 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, *incver);
3744 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3745 S_ISDIR(tmpstatbuf.st_mode))
3746 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3752 /* finally push this lib directory on the end of @INC */
3753 av_push(GvAVn(PL_incgv), libdir);
3757 #ifdef USE_5005THREADS
3758 STATIC struct perl_thread *
3759 S_init_main_thread(pTHX)
3761 #if !defined(PERL_IMPLICIT_CONTEXT)
3762 struct perl_thread *thr;
3766 Newz(53, thr, 1, struct perl_thread);
3767 PL_curcop = &PL_compiling;
3768 thr->interp = PERL_GET_INTERP;
3769 thr->cvcache = newHV();
3770 thr->threadsv = newAV();
3771 /* thr->threadsvp is set when find_threadsv is called */
3772 thr->specific = newAV();
3773 thr->flags = THRf_R_JOINABLE;
3774 MUTEX_INIT(&thr->mutex);
3775 /* Handcraft thrsv similarly to mess_sv */
3776 New(53, PL_thrsv, 1, SV);
3777 Newz(53, xpv, 1, XPV);
3778 SvFLAGS(PL_thrsv) = SVt_PV;
3779 SvANY(PL_thrsv) = (void*)xpv;
3780 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
3781 SvPVX(PL_thrsv) = (char*)thr;
3782 SvCUR_set(PL_thrsv, sizeof(thr));
3783 SvLEN_set(PL_thrsv, sizeof(thr));
3784 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
3785 thr->oursv = PL_thrsv;
3786 PL_chopset = " \n-";
3789 MUTEX_LOCK(&PL_threads_mutex);
3795 MUTEX_UNLOCK(&PL_threads_mutex);
3797 #ifdef HAVE_THREAD_INTERN
3798 Perl_init_thread_intern(thr);
3801 #ifdef SET_THREAD_SELF
3802 SET_THREAD_SELF(thr);
3804 thr->self = pthread_self();
3805 #endif /* SET_THREAD_SELF */
3809 * These must come after the thread self setting
3810 * because sv_setpvn does SvTAINT and the taint
3811 * fields thread selfness being set.
3813 PL_toptarget = NEWSV(0,0);
3814 sv_upgrade(PL_toptarget, SVt_PVFM);
3815 sv_setpvn(PL_toptarget, "", 0);
3816 PL_bodytarget = NEWSV(0,0);
3817 sv_upgrade(PL_bodytarget, SVt_PVFM);
3818 sv_setpvn(PL_bodytarget, "", 0);
3819 PL_formtarget = PL_bodytarget;
3820 thr->errsv = newSVpvn("", 0);
3821 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
3824 PL_peepp = MEMBER_TO_FPTR(Perl_peep);
3825 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3826 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3827 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3828 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3829 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
3831 PL_reginterp_cnt = 0;
3835 #endif /* USE_5005THREADS */
3838 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
3841 line_t oldline = CopLINE(PL_curcop);
3847 while (AvFILL(paramList) >= 0) {
3848 cv = (CV*)av_shift(paramList);
3849 if (PL_savebegin && (paramList == PL_beginav)) {
3850 /* save PL_beginav for compiler */
3851 if (! PL_beginav_save)
3852 PL_beginav_save = newAV();
3853 av_push(PL_beginav_save, (SV*)cv);
3857 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3858 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_list_body), cv);
3864 #ifndef PERL_FLEXIBLE_EXCEPTIONS
3868 (void)SvPV(atsv, len);
3871 PL_curcop = &PL_compiling;
3872 CopLINE_set(PL_curcop, oldline);
3873 if (paramList == PL_beginav)
3874 sv_catpv(atsv, "BEGIN failed--compilation aborted");
3876 Perl_sv_catpvf(aTHX_ atsv,
3877 "%s failed--call queue aborted",
3878 paramList == PL_checkav ? "CHECK"
3879 : paramList == PL_initav ? "INIT"
3881 while (PL_scopestack_ix > oldscope)
3884 Perl_croak(aTHX_ "%s", SvPVx(atsv, n_a));
3891 /* my_exit() was called */
3892 while (PL_scopestack_ix > oldscope)
3895 PL_curstash = PL_defstash;
3896 PL_curcop = &PL_compiling;
3897 CopLINE_set(PL_curcop, oldline);
3899 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
3900 if (paramList == PL_beginav)
3901 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
3903 Perl_croak(aTHX_ "%s failed--call queue aborted",
3904 paramList == PL_checkav ? "CHECK"
3905 : paramList == PL_initav ? "INIT"
3912 PL_curcop = &PL_compiling;
3913 CopLINE_set(PL_curcop, oldline);
3916 PerlIO_printf(Perl_error_log, "panic: restartop\n");
3924 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3926 S_vcall_list_body(pTHX_ va_list args)
3928 CV *cv = va_arg(args, CV*);
3929 return call_list_body(cv);
3934 S_call_list_body(pTHX_ CV *cv)
3936 PUSHMARK(PL_stack_sp);
3937 call_sv((SV*)cv, G_EVAL|G_DISCARD);
3942 Perl_my_exit(pTHX_ U32 status)
3944 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
3945 thr, (unsigned long) status));
3954 STATUS_NATIVE_SET(status);
3961 Perl_my_failure_exit(pTHX)
3964 if (vaxc$errno & 1) {
3965 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
3966 STATUS_NATIVE_SET(44);
3969 if (!vaxc$errno && errno) /* unlikely */
3970 STATUS_NATIVE_SET(44);
3972 STATUS_NATIVE_SET(vaxc$errno);
3977 STATUS_POSIX_SET(errno);
3979 exitstatus = STATUS_POSIX >> 8;
3980 if (exitstatus & 255)
3981 STATUS_POSIX_SET(exitstatus);
3983 STATUS_POSIX_SET(255);
3990 S_my_exit_jump(pTHX)
3992 register PERL_CONTEXT *cx;
3997 SvREFCNT_dec(PL_e_script);
3998 PL_e_script = Nullsv;
4001 POPSTACK_TO(PL_mainstack);
4002 if (cxstack_ix >= 0) {
4005 POPBLOCK(cx,PL_curpm);
4013 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen)
4016 p = SvPVX(PL_e_script);
4017 nl = strchr(p, '\n');
4018 nl = (nl) ? nl+1 : SvEND(PL_e_script);
4020 filter_del(read_e_script);
4023 sv_catpvn(buf_sv, p, nl-p);
4024 sv_chop(PL_e_script, nl);