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(pTHXo_ int idx, SV *buf_sv, int maxlen);
36 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
43 #define perl_construct Perl_construct
44 #define perl_parse Perl_parse
45 #define perl_run Perl_run
46 #define perl_destruct Perl_destruct
47 #define perl_free Perl_free
50 #if defined(USE_THREADS)
51 # define INIT_TLS_AND_INTERP \
53 if (!PL_curinterp) { \
54 PERL_SET_INTERP(my_perl); \
60 # if defined(USE_ITHREADS)
62 /* this is called in parent before the fork() */
64 Perl_atfork_lock(void)
66 /* locks must be held in locking order (if any) */
68 MUTEX_LOCK(&PL_malloc_mutex);
73 /* this is called in both parent and child after the fork() */
75 Perl_atfork_unlock(void)
77 /* locks must be released in same order as in S_atfork_lock() */
79 MUTEX_UNLOCK(&PL_malloc_mutex);
84 # define INIT_TLS_AND_INTERP \
86 if (!PL_curinterp) { \
87 PERL_SET_INTERP(my_perl); \
90 PERL_SET_THX(my_perl); \
94 PERL_SET_THX(my_perl); \
98 # define INIT_TLS_AND_INTERP \
100 if (!PL_curinterp) { \
101 PERL_SET_INTERP(my_perl); \
103 PERL_SET_THX(my_perl); \
108 #ifdef PERL_IMPLICIT_SYS
110 perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
111 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
112 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
113 struct IPerlDir* ipD, struct IPerlSock* ipS,
114 struct IPerlProc* ipP)
116 PerlInterpreter *my_perl;
118 my_perl = (PerlInterpreter*)new(ipM) CPerlObj(ipM, ipMS, ipMP, ipE, ipStd,
119 ipLIO, ipD, ipS, ipP);
122 /* New() needs interpreter, so call malloc() instead */
123 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
125 Zero(my_perl, 1, PerlInterpreter);
142 =for apidoc perl_alloc
144 Allocates a new Perl interpreter. See L<perlembed>.
152 PerlInterpreter *my_perl;
154 /* New() needs interpreter, so call malloc() instead */
155 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
158 Zero(my_perl, 1, PerlInterpreter);
161 #endif /* PERL_IMPLICIT_SYS */
164 =for apidoc perl_construct
166 Initializes a new Perl interpreter. See L<perlembed>.
172 perl_construct(pTHXx)
176 struct perl_thread *thr = NULL;
177 #endif /* FAKE_THREADS */
178 #endif /* USE_THREADS */
182 PL_perl_destruct_level = 1;
184 if (PL_perl_destruct_level > 0)
188 /* Init the real globals (and main thread)? */
191 MUTEX_INIT(&PL_sv_mutex);
193 * Safe to use basic SV functions from now on (though
194 * not things like mortals or tainting yet).
196 MUTEX_INIT(&PL_eval_mutex);
197 COND_INIT(&PL_eval_cond);
198 MUTEX_INIT(&PL_threads_mutex);
199 COND_INIT(&PL_nthreads_cond);
200 # ifdef EMULATE_ATOMIC_REFCOUNTS
201 MUTEX_INIT(&PL_svref_mutex);
202 # endif /* EMULATE_ATOMIC_REFCOUNTS */
204 MUTEX_INIT(&PL_cred_mutex);
205 MUTEX_INIT(&PL_sv_lock_mutex);
206 MUTEX_INIT(&PL_fdpid_mutex);
208 thr = init_main_thread();
209 #endif /* USE_THREADS */
211 #ifdef PERL_FLEXIBLE_EXCEPTIONS
212 PL_protect = MEMBER_TO_FPTR(Perl_default_protect); /* for exceptions */
215 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
217 PL_linestr = NEWSV(65,79);
218 sv_upgrade(PL_linestr,SVt_PVIV);
220 if (!SvREADONLY(&PL_sv_undef)) {
221 /* set read-only and try to insure than we wont see REFCNT==0
224 SvREADONLY_on(&PL_sv_undef);
225 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
227 sv_setpv(&PL_sv_no,PL_No);
229 SvREADONLY_on(&PL_sv_no);
230 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
232 sv_setpv(&PL_sv_yes,PL_Yes);
234 SvREADONLY_on(&PL_sv_yes);
235 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
240 /* PL_sighandlerp = sighandler; */
242 PL_sighandlerp = Perl_sighandler;
244 PL_pidstatus = newHV();
248 * There is no way we can refer to them from Perl so close them to save
249 * space. The other alternative would be to provide STDAUX and STDPRN
252 (void)PerlIO_close(PerlIO_importFILE(stdaux, 0));
253 (void)PerlIO_close(PerlIO_importFILE(stdprn, 0));
257 PL_nrs = newSVpvn("\n", 1);
258 PL_rs = SvREFCNT_inc(PL_nrs);
263 PL_lex_state = LEX_NOTPARSING;
269 SET_NUMERIC_STANDARD();
273 PL_patchlevel = NEWSV(0,4);
274 (void)SvUPGRADE(PL_patchlevel, SVt_PVNV);
275 if (PERL_REVISION > 127 || PERL_VERSION > 127 || PERL_SUBVERSION > 127)
276 SvGROW(PL_patchlevel, UTF8_MAXLEN*3+1);
277 s = (U8*)SvPVX(PL_patchlevel);
278 /* Build version strings using "native" characters */
279 s = uvchr_to_utf8(s, (UV)PERL_REVISION);
280 s = uvchr_to_utf8(s, (UV)PERL_VERSION);
281 s = uvchr_to_utf8(s, (UV)PERL_SUBVERSION);
283 SvCUR_set(PL_patchlevel, s - (U8*)SvPVX(PL_patchlevel));
284 SvPOK_on(PL_patchlevel);
285 SvNVX(PL_patchlevel) = (NV)PERL_REVISION
286 + ((NV)PERL_VERSION / (NV)1000)
287 #if defined(PERL_SUBVERSION) && PERL_SUBVERSION > 0
288 + ((NV)PERL_SUBVERSION / (NV)1000000)
291 SvNOK_on(PL_patchlevel); /* dual valued */
292 SvUTF8_on(PL_patchlevel);
293 SvREADONLY_on(PL_patchlevel);
296 #if defined(LOCAL_PATCH_COUNT)
297 PL_localpatches = local_patches; /* For possible -v */
300 #ifdef HAVE_INTERP_INTERN
304 PerlIO_init(); /* Hook to IO system */
306 PL_fdpid = newAV(); /* for remembering popen pids by fd */
307 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
308 PL_errors = newSVpvn("",0);
310 PL_regex_padav = newAV();
312 #ifdef USE_REENTRANT_API
313 New(31337, PL_reentrant_buffer,1, REBUF);
314 New(31337, PL_reentrant_buffer->tmbuff,1, struct tm);
320 =for apidoc perl_destruct
322 Shuts down a Perl interpreter. See L<perlembed>.
330 int destruct_level; /* 0=none, 1=full, 2=full with checks */
335 #endif /* USE_THREADS */
337 /* wait for all pseudo-forked children to finish */
338 PERL_WAIT_FOR_CHILDREN;
342 /* Pass 1 on any remaining threads: detach joinables, join zombies */
344 MUTEX_LOCK(&PL_threads_mutex);
345 DEBUG_S(PerlIO_printf(Perl_debug_log,
346 "perl_destruct: waiting for %d threads...\n",
348 for (t = thr->next; t != thr; t = t->next) {
349 MUTEX_LOCK(&t->mutex);
350 switch (ThrSTATE(t)) {
353 DEBUG_S(PerlIO_printf(Perl_debug_log,
354 "perl_destruct: joining zombie %p\n", t));
355 ThrSETSTATE(t, THRf_DEAD);
356 MUTEX_UNLOCK(&t->mutex);
359 * The SvREFCNT_dec below may take a long time (e.g. av
360 * may contain an object scalar whose destructor gets
361 * called) so we have to unlock threads_mutex and start
364 MUTEX_UNLOCK(&PL_threads_mutex);
366 SvREFCNT_dec((SV*)av);
367 DEBUG_S(PerlIO_printf(Perl_debug_log,
368 "perl_destruct: joined zombie %p OK\n", t));
370 case THRf_R_JOINABLE:
371 DEBUG_S(PerlIO_printf(Perl_debug_log,
372 "perl_destruct: detaching thread %p\n", t));
373 ThrSETSTATE(t, THRf_R_DETACHED);
375 * We unlock threads_mutex and t->mutex in the opposite order
376 * from which we locked them just so that DETACH won't
377 * deadlock if it panics. It's only a breach of good style
378 * not a bug since they are unlocks not locks.
380 MUTEX_UNLOCK(&PL_threads_mutex);
382 MUTEX_UNLOCK(&t->mutex);
385 DEBUG_S(PerlIO_printf(Perl_debug_log,
386 "perl_destruct: ignoring %p (state %u)\n",
388 MUTEX_UNLOCK(&t->mutex);
389 /* fall through and out */
392 /* We leave the above "Pass 1" loop with threads_mutex still locked */
394 /* Pass 2 on remaining threads: wait for the thread count to drop to one */
395 while (PL_nthreads > 1)
397 DEBUG_S(PerlIO_printf(Perl_debug_log,
398 "perl_destruct: final wait for %d threads\n",
400 COND_WAIT(&PL_nthreads_cond, &PL_threads_mutex);
402 /* At this point, we're the last thread */
403 MUTEX_UNLOCK(&PL_threads_mutex);
404 DEBUG_S(PerlIO_printf(Perl_debug_log, "perl_destruct: armageddon has arrived\n"));
405 MUTEX_DESTROY(&PL_threads_mutex);
406 COND_DESTROY(&PL_nthreads_cond);
408 #endif /* !defined(FAKE_THREADS) */
409 #endif /* USE_THREADS */
411 destruct_level = PL_perl_destruct_level;
415 if ((s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL"))) {
417 if (destruct_level < i)
427 /* We must account for everything. */
429 /* Destroy the main CV and syntax tree */
431 PL_curpad = AvARRAY(PL_comppad);
432 op_free(PL_main_root);
433 PL_main_root = Nullop;
435 PL_curcop = &PL_compiling;
436 PL_main_start = Nullop;
437 SvREFCNT_dec(PL_main_cv);
441 /* Tell PerlIO we are about to tear things apart in case
442 we have layers which are using resources that should
446 PerlIO_destruct(aTHX);
448 if (PL_sv_objcount) {
450 * Try to destruct global references. We do this first so that the
451 * destructors and destructees still exist. Some sv's might remain.
452 * Non-referenced objects are on their own.
457 /* unhook hooks which will soon be, or use, destroyed data */
458 SvREFCNT_dec(PL_warnhook);
459 PL_warnhook = Nullsv;
460 SvREFCNT_dec(PL_diehook);
463 /* call exit list functions */
464 while (PL_exitlistlen-- > 0)
465 PL_exitlist[PL_exitlistlen].fn(aTHXo_ PL_exitlist[PL_exitlistlen].ptr);
467 Safefree(PL_exitlist);
469 if (destruct_level == 0){
471 DEBUG_P(debprofdump());
473 /* The exit() function will do everything that needs doing. */
477 /* jettison our possibly duplicated environment */
479 #ifdef USE_ENVIRON_ARRAY
480 if (environ != PL_origenviron) {
483 for (i = 0; environ[i]; i++)
484 safesysfree(environ[i]);
485 /* Must use safesysfree() when working with environ. */
486 safesysfree(environ);
488 environ = PL_origenviron;
492 /* loosen bonds of global variables */
495 (void)PerlIO_close(PL_rsfp);
499 /* Filters for program text */
500 SvREFCNT_dec(PL_rsfp_filters);
501 PL_rsfp_filters = Nullav;
504 PL_preprocess = FALSE;
510 PL_doswitches = FALSE;
511 PL_dowarn = G_WARN_OFF;
512 PL_doextract = FALSE;
513 PL_sawampersand = FALSE; /* must save all match strings */
516 Safefree(PL_inplace);
518 SvREFCNT_dec(PL_patchlevel);
521 SvREFCNT_dec(PL_e_script);
522 PL_e_script = Nullsv;
525 /* magical thingies */
527 SvREFCNT_dec(PL_ofs_sv); /* $, */
530 SvREFCNT_dec(PL_ors_sv); /* $\ */
533 SvREFCNT_dec(PL_rs); /* $/ */
536 SvREFCNT_dec(PL_nrs); /* $/ helper */
539 PL_multiline = 0; /* $* */
540 Safefree(PL_osname); /* $^O */
543 SvREFCNT_dec(PL_statname);
544 PL_statname = Nullsv;
547 /* defgv, aka *_ should be taken care of elsewhere */
549 /* clean up after study() */
550 SvREFCNT_dec(PL_lastscream);
551 PL_lastscream = Nullsv;
552 Safefree(PL_screamfirst);
554 Safefree(PL_screamnext);
558 Safefree(PL_efloatbuf);
559 PL_efloatbuf = Nullch;
562 /* startup and shutdown function lists */
563 SvREFCNT_dec(PL_beginav);
564 SvREFCNT_dec(PL_endav);
565 SvREFCNT_dec(PL_checkav);
566 SvREFCNT_dec(PL_initav);
572 /* shortcuts just get cleared */
578 PL_argvoutgv = Nullgv;
580 PL_stderrgv = Nullgv;
581 PL_last_in_gv = Nullgv;
583 PL_debstash = Nullhv;
585 /* reset so print() ends up where we expect */
588 SvREFCNT_dec(PL_argvout_stack);
589 PL_argvout_stack = Nullav;
591 SvREFCNT_dec(PL_modglobal);
592 PL_modglobal = Nullhv;
593 SvREFCNT_dec(PL_preambleav);
594 PL_preambleav = Nullav;
595 SvREFCNT_dec(PL_subname);
597 SvREFCNT_dec(PL_linestr);
599 SvREFCNT_dec(PL_pidstatus);
600 PL_pidstatus = Nullhv;
601 SvREFCNT_dec(PL_toptarget);
602 PL_toptarget = Nullsv;
603 SvREFCNT_dec(PL_bodytarget);
604 PL_bodytarget = Nullsv;
605 PL_formtarget = Nullsv;
607 /* free locale stuff */
608 #ifdef USE_LOCALE_COLLATE
609 Safefree(PL_collation_name);
610 PL_collation_name = Nullch;
613 #ifdef USE_LOCALE_NUMERIC
614 Safefree(PL_numeric_name);
615 PL_numeric_name = Nullch;
616 SvREFCNT_dec(PL_numeric_radix_sv);
619 /* clear utf8 character classes */
620 SvREFCNT_dec(PL_utf8_alnum);
621 SvREFCNT_dec(PL_utf8_alnumc);
622 SvREFCNT_dec(PL_utf8_ascii);
623 SvREFCNT_dec(PL_utf8_alpha);
624 SvREFCNT_dec(PL_utf8_space);
625 SvREFCNT_dec(PL_utf8_cntrl);
626 SvREFCNT_dec(PL_utf8_graph);
627 SvREFCNT_dec(PL_utf8_digit);
628 SvREFCNT_dec(PL_utf8_upper);
629 SvREFCNT_dec(PL_utf8_lower);
630 SvREFCNT_dec(PL_utf8_print);
631 SvREFCNT_dec(PL_utf8_punct);
632 SvREFCNT_dec(PL_utf8_xdigit);
633 SvREFCNT_dec(PL_utf8_mark);
634 SvREFCNT_dec(PL_utf8_toupper);
635 SvREFCNT_dec(PL_utf8_tolower);
636 PL_utf8_alnum = Nullsv;
637 PL_utf8_alnumc = Nullsv;
638 PL_utf8_ascii = Nullsv;
639 PL_utf8_alpha = Nullsv;
640 PL_utf8_space = Nullsv;
641 PL_utf8_cntrl = Nullsv;
642 PL_utf8_graph = Nullsv;
643 PL_utf8_digit = Nullsv;
644 PL_utf8_upper = Nullsv;
645 PL_utf8_lower = Nullsv;
646 PL_utf8_print = Nullsv;
647 PL_utf8_punct = Nullsv;
648 PL_utf8_xdigit = Nullsv;
649 PL_utf8_mark = Nullsv;
650 PL_utf8_toupper = Nullsv;
651 PL_utf8_totitle = Nullsv;
652 PL_utf8_tolower = Nullsv;
654 if (!specialWARN(PL_compiling.cop_warnings))
655 SvREFCNT_dec(PL_compiling.cop_warnings);
656 PL_compiling.cop_warnings = Nullsv;
657 if (!specialCopIO(PL_compiling.cop_io))
658 SvREFCNT_dec(PL_compiling.cop_io);
659 PL_compiling.cop_io = Nullsv;
661 Safefree(CopFILE(&PL_compiling));
662 CopFILE(&PL_compiling) = Nullch;
663 Safefree(CopSTASHPV(&PL_compiling));
665 SvREFCNT_dec(CopFILEGV(&PL_compiling));
666 CopFILEGV(&PL_compiling) = Nullgv;
667 /* cop_stash is not refcounted */
670 /* Prepare to destruct main symbol table. */
675 SvREFCNT_dec(PL_curstname);
676 PL_curstname = Nullsv;
678 /* clear queued errors */
679 SvREFCNT_dec(PL_errors);
683 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
684 if (PL_scopestack_ix != 0)
685 Perl_warner(aTHX_ WARN_INTERNAL,
686 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
687 (long)PL_scopestack_ix);
688 if (PL_savestack_ix != 0)
689 Perl_warner(aTHX_ WARN_INTERNAL,
690 "Unbalanced saves: %ld more saves than restores\n",
691 (long)PL_savestack_ix);
692 if (PL_tmps_floor != -1)
693 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced tmps: %ld more allocs than frees\n",
694 (long)PL_tmps_floor + 1);
695 if (cxstack_ix != -1)
696 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced context: %ld more PUSHes than POPs\n",
697 (long)cxstack_ix + 1);
700 /* Now absolutely destruct everything, somehow or other, loops or no. */
701 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
702 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
704 /* the 2 is for PL_fdpid and PL_strtab */
705 while (PL_sv_count > 2 && sv_clean_all())
708 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
709 SvFLAGS(PL_fdpid) |= SVt_PVAV;
710 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
711 SvFLAGS(PL_strtab) |= SVt_PVHV;
713 AvREAL_off(PL_fdpid); /* no surviving entries */
714 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
717 #ifdef HAVE_INTERP_INTERN
721 /* Destruct the global string table. */
723 /* Yell and reset the HeVAL() slots that are still holding refcounts,
724 * so that sv_free() won't fail on them.
732 max = HvMAX(PL_strtab);
733 array = HvARRAY(PL_strtab);
736 if (hent && ckWARN_d(WARN_INTERNAL)) {
737 Perl_warner(aTHX_ WARN_INTERNAL,
738 "Unbalanced string table refcount: (%d) for \"%s\"",
739 HeVAL(hent) - Nullsv, HeKEY(hent));
740 HeVAL(hent) = Nullsv;
750 SvREFCNT_dec(PL_strtab);
753 /* free the pointer table used for cloning */
754 ptr_table_free(PL_ptr_table);
757 /* free special SVs */
759 SvREFCNT(&PL_sv_yes) = 0;
760 sv_clear(&PL_sv_yes);
761 SvANY(&PL_sv_yes) = NULL;
762 SvFLAGS(&PL_sv_yes) = 0;
764 SvREFCNT(&PL_sv_no) = 0;
766 SvANY(&PL_sv_no) = NULL;
767 SvFLAGS(&PL_sv_no) = 0;
769 SvREFCNT(&PL_sv_undef) = 0;
770 SvREADONLY_off(&PL_sv_undef);
772 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
773 Perl_warner(aTHX_ WARN_INTERNAL,"Scalars leaked: %ld\n", (long)PL_sv_count);
775 Safefree(PL_origfilename);
776 Safefree(PL_reg_start_tmp);
778 Safefree(PL_reg_curpm);
779 Safefree(PL_reg_poscache);
780 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
781 Safefree(PL_op_mask);
782 Safefree(PL_psig_ptr);
783 Safefree(PL_psig_name);
784 Safefree(PL_bitcount);
785 Safefree(PL_psig_pend);
787 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
789 DEBUG_P(debprofdump());
791 MUTEX_DESTROY(&PL_strtab_mutex);
792 MUTEX_DESTROY(&PL_sv_mutex);
793 MUTEX_DESTROY(&PL_eval_mutex);
794 MUTEX_DESTROY(&PL_cred_mutex);
795 MUTEX_DESTROY(&PL_fdpid_mutex);
796 COND_DESTROY(&PL_eval_cond);
797 #ifdef EMULATE_ATOMIC_REFCOUNTS
798 MUTEX_DESTROY(&PL_svref_mutex);
799 #endif /* EMULATE_ATOMIC_REFCOUNTS */
801 /* As the penultimate thing, free the non-arena SV for thrsv */
802 Safefree(SvPVX(PL_thrsv));
803 Safefree(SvANY(PL_thrsv));
806 #endif /* USE_THREADS */
808 #ifdef USE_REENTRANT_API
809 Safefree(PL_reentrant_buffer->tmbuff);
810 Safefree(PL_reentrant_buffer);
815 /* As the absolutely last thing, free the non-arena SV for mess() */
818 /* it could have accumulated taint magic */
819 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
822 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
823 moremagic = mg->mg_moremagic;
824 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
826 Safefree(mg->mg_ptr);
830 /* we know that type >= SVt_PV */
831 (void)SvOOK_off(PL_mess_sv);
832 Safefree(SvPVX(PL_mess_sv));
833 Safefree(SvANY(PL_mess_sv));
834 Safefree(PL_mess_sv);
840 =for apidoc perl_free
842 Releases a Perl interpreter. See L<perlembed>.
850 #if defined(PERL_OBJECT)
853 # if defined(WIN32) || defined(NETWARE)
854 # if defined(PERL_IMPLICIT_SYS)
856 void *host = nw_internal_host;
858 void *host = w32_internal_host;
861 if (PerlProc_lasthost()) {
867 nw5_delete_internal_host(host);
869 win32_delete_internal_host(host);
882 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
884 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
885 PL_exitlist[PL_exitlistlen].fn = fn;
886 PL_exitlist[PL_exitlistlen].ptr = ptr;
891 =for apidoc perl_parse
893 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
899 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
908 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
911 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
912 setuid perl scripts securely.\n");
916 #if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
917 _dyld_lookup_and_bind
918 ("__environ", (unsigned long *) &environ_pointer, NULL);
923 #ifdef USE_ENVIRON_ARRAY
924 PL_origenviron = environ;
929 /* Come here if running an undumped a.out. */
931 PL_origfilename = savepv(argv[0]);
932 PL_do_undump = FALSE;
933 cxstack_ix = -1; /* start label stack again */
935 init_postdump_symbols(argc,argv,env);
940 PL_curpad = AvARRAY(PL_comppad);
941 op_free(PL_main_root);
942 PL_main_root = Nullop;
944 PL_main_start = Nullop;
945 SvREFCNT_dec(PL_main_cv);
949 oldscope = PL_scopestack_ix;
950 PL_dowarn = G_WARN_OFF;
952 #ifdef PERL_FLEXIBLE_EXCEPTIONS
953 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
959 #ifndef PERL_FLEXIBLE_EXCEPTIONS
960 parse_body(env,xsinit);
963 call_list(oldscope, PL_checkav);
970 /* my_exit() was called */
971 while (PL_scopestack_ix > oldscope)
974 PL_curstash = PL_defstash;
976 call_list(oldscope, PL_checkav);
977 ret = STATUS_NATIVE_EXPORT;
980 PerlIO_printf(Perl_error_log, "panic: top_env\n");
988 #ifdef PERL_FLEXIBLE_EXCEPTIONS
990 S_vparse_body(pTHX_ va_list args)
992 char **env = va_arg(args, char**);
993 XSINIT_t xsinit = va_arg(args, XSINIT_t);
995 return parse_body(env, xsinit);
1000 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
1002 int argc = PL_origargc;
1003 char **argv = PL_origargv;
1004 char *scriptname = NULL;
1006 VOL bool dosearch = FALSE;
1007 char *validarg = "";
1011 char *popts, *cddir = Nullch;
1013 sv_setpvn(PL_linestr,"",0);
1014 sv = newSVpvn("",0); /* first used for -I flags */
1018 for (argc--,argv++; argc > 0; argc--,argv++) {
1019 if (argv[0][0] != '-' || !argv[0][1])
1023 validarg = " PHOOEY ";
1032 win32_argv2utf8(argc-1, argv+1);
1035 #ifndef PERL_STRICT_CR
1059 if ((s = moreswitches(s)))
1069 #ifdef MACOS_TRADITIONAL
1070 /* ignore -e for Dev:Pseudo argument */
1071 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
1074 if (PL_euid != PL_uid || PL_egid != PL_gid)
1075 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
1077 PL_e_script = newSVpvn("",0);
1078 filter_add(read_e_script, NULL);
1081 sv_catpv(PL_e_script, s);
1083 sv_catpv(PL_e_script, argv[1]);
1087 Perl_croak(aTHX_ "No code specified for -e");
1088 sv_catpv(PL_e_script, "\n");
1091 case 'I': /* -I handled both here and in moreswitches() */
1093 if (!*++s && (s=argv[1]) != Nullch) {
1098 STRLEN len = strlen(s);
1099 p = savepvn(s, len);
1100 incpush(p, TRUE, TRUE);
1101 sv_catpvn(sv, "-I", 2);
1102 sv_catpvn(sv, p, len);
1103 sv_catpvn(sv, " ", 1);
1107 Perl_croak(aTHX_ "No directory specified for -I");
1111 PL_preprocess = TRUE;
1121 PL_preambleav = newAV();
1122 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
1124 PL_Sv = newSVpv("print myconfig();",0);
1126 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
1128 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
1130 sv_catpv(PL_Sv,"\" Compile-time options:");
1132 sv_catpv(PL_Sv," DEBUGGING");
1134 # ifdef MULTIPLICITY
1135 sv_catpv(PL_Sv," MULTIPLICITY");
1138 sv_catpv(PL_Sv," USE_THREADS");
1140 # ifdef USE_ITHREADS
1141 sv_catpv(PL_Sv," USE_ITHREADS");
1143 # ifdef USE_64_BIT_INT
1144 sv_catpv(PL_Sv," USE_64_BIT_INT");
1146 # ifdef USE_64_BIT_ALL
1147 sv_catpv(PL_Sv," USE_64_BIT_ALL");
1149 # ifdef USE_LONG_DOUBLE
1150 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1152 # ifdef USE_LARGE_FILES
1153 sv_catpv(PL_Sv," USE_LARGE_FILES");
1156 sv_catpv(PL_Sv," USE_SOCKS");
1159 sv_catpv(PL_Sv," PERL_OBJECT");
1161 # ifdef PERL_IMPLICIT_CONTEXT
1162 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1164 # ifdef PERL_IMPLICIT_SYS
1165 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1167 sv_catpv(PL_Sv,"\\n\",");
1169 #if defined(LOCAL_PATCH_COUNT)
1170 if (LOCAL_PATCH_COUNT > 0) {
1172 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
1173 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1174 if (PL_localpatches[i])
1175 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
1179 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
1182 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
1184 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
1187 sv_catpv(PL_Sv, "; \
1189 @env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; ");
1192 push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
1195 print \" \\%ENV:\\n @env\\n\" if @env; \
1196 print \" \\@INC:\\n @INC\\n\";");
1199 PL_Sv = newSVpv("config_vars(qw(",0);
1200 sv_catpv(PL_Sv, ++s);
1201 sv_catpv(PL_Sv, "))");
1204 av_push(PL_preambleav, PL_Sv);
1205 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1208 PL_doextract = TRUE;
1216 if (!*++s || isSPACE(*s)) {
1220 /* catch use of gnu style long options */
1221 if (strEQ(s, "version")) {
1225 if (strEQ(s, "help")) {
1232 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1238 #ifndef SECURE_INTERNAL_GETENV
1241 (popts = PerlEnv_getenv("PERL5OPT")))
1246 if (*s == '-' && *(s+1) == 'T')
1261 if (!strchr("DIMUdmw", *s))
1262 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
1275 scriptname = argv[0];
1278 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1280 else if (scriptname == Nullch) {
1282 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1290 open_script(scriptname,dosearch,sv,&fdscript);
1292 validate_suid(validarg, scriptname,fdscript);
1295 #if defined(SIGCHLD) || defined(SIGCLD)
1298 # define SIGCHLD SIGCLD
1300 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1301 if (sigstate == SIG_IGN) {
1302 if (ckWARN(WARN_SIGNAL))
1303 Perl_warner(aTHX_ WARN_SIGNAL,
1304 "Can't ignore signal CHLD, forcing to default");
1305 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1311 #ifdef MACOS_TRADITIONAL
1312 if (PL_doextract || gMacPerl_AlwaysExtract) {
1317 if (cddir && PerlDir_chdir(cddir) < 0)
1318 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1322 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1323 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1324 CvUNIQUE_on(PL_compcv);
1326 PL_comppad = newAV();
1327 av_push(PL_comppad, Nullsv);
1328 PL_curpad = AvARRAY(PL_comppad);
1329 PL_comppad_name = newAV();
1330 PL_comppad_name_fill = 0;
1331 PL_min_intro_pending = 0;
1334 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
1335 PL_curpad[0] = (SV*)newAV();
1336 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1337 CvOWNER(PL_compcv) = 0;
1338 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1339 MUTEX_INIT(CvMUTEXP(PL_compcv));
1340 #endif /* USE_THREADS */
1342 comppadlist = newAV();
1343 AvREAL_off(comppadlist);
1344 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1345 av_store(comppadlist, 1, (SV*)PL_comppad);
1346 CvPADLIST(PL_compcv) = comppadlist;
1349 boot_core_UNIVERSAL();
1351 boot_core_xsutils();
1355 (*xsinit)(aTHXo); /* in case linked C routines want magical variables */
1357 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
1363 # ifdef HAS_SOCKS5_INIT
1364 socks5_init(argv[0]);
1370 init_predump_symbols();
1371 /* init_postdump_symbols not currently designed to be called */
1372 /* more than once (ENV isn't cleared first, for example) */
1373 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
1375 init_postdump_symbols(argc,argv,env);
1379 /* now parse the script */
1381 SETERRNO(0,SS$_NORMAL);
1383 #ifdef MACOS_TRADITIONAL
1384 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1386 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1388 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1389 MacPerl_MPWFileName(PL_origfilename));
1393 if (yyparse() || PL_error_count) {
1395 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
1397 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1402 CopLINE_set(PL_curcop, 0);
1403 PL_curstash = PL_defstash;
1404 PL_preprocess = FALSE;
1406 SvREFCNT_dec(PL_e_script);
1407 PL_e_script = Nullsv;
1410 /* now that script is parsed, we can modify record separator */
1411 SvREFCNT_dec(PL_rs);
1412 PL_rs = SvREFCNT_inc(PL_nrs);
1413 sv_setsv(get_sv("/", TRUE), PL_rs);
1418 SAVECOPFILE(PL_curcop);
1419 SAVECOPLINE(PL_curcop);
1420 gv_check(PL_defstash);
1427 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1428 dump_mstats("after compilation:");
1437 =for apidoc perl_run
1439 Tells a Perl interpreter to run. See L<perlembed>.
1454 oldscope = PL_scopestack_ix;
1456 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1458 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1464 cxstack_ix = -1; /* start context stack again */
1466 case 0: /* normal completion */
1467 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1472 case 2: /* my_exit() */
1473 while (PL_scopestack_ix > oldscope)
1476 PL_curstash = PL_defstash;
1477 if (PL_endav && !PL_minus_c)
1478 call_list(oldscope, PL_endav);
1480 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1481 dump_mstats("after execution: ");
1483 ret = STATUS_NATIVE_EXPORT;
1487 POPSTACK_TO(PL_mainstack);
1490 PerlIO_printf(Perl_error_log, "panic: restartop\n");
1500 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1502 S_vrun_body(pTHX_ va_list args)
1504 I32 oldscope = va_arg(args, I32);
1506 return run_body(oldscope);
1512 S_run_body(pTHX_ I32 oldscope)
1514 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
1515 PL_sawampersand ? "Enabling" : "Omitting"));
1517 if (!PL_restartop) {
1518 DEBUG_x(dump_all());
1519 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
1520 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1524 #ifdef MACOS_TRADITIONAL
1525 PerlIO_printf(Perl_error_log, "%s syntax OK\n", MacPerl_MPWFileName(PL_origfilename));
1527 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
1531 if (PERLDB_SINGLE && PL_DBsingle)
1532 sv_setiv(PL_DBsingle, 1);
1534 call_list(oldscope, PL_initav);
1540 PL_op = PL_restartop;
1544 else if (PL_main_start) {
1545 CvDEPTH(PL_main_cv) = 1;
1546 PL_op = PL_main_start;
1556 =for apidoc p||get_sv
1558 Returns the SV of the specified Perl scalar. If C<create> is set and the
1559 Perl variable does not exist then it will be created. If C<create> is not
1560 set and the variable does not exist then NULL is returned.
1566 Perl_get_sv(pTHX_ const char *name, I32 create)
1570 if (name[1] == '\0' && !isALPHA(name[0])) {
1571 PADOFFSET tmp = find_threadsv(name);
1572 if (tmp != NOT_IN_PAD)
1573 return THREADSV(tmp);
1575 #endif /* USE_THREADS */
1576 gv = gv_fetchpv(name, create, SVt_PV);
1583 =for apidoc p||get_av
1585 Returns the AV of the specified Perl array. If C<create> is set and the
1586 Perl variable does not exist then it will be created. If C<create> is not
1587 set and the variable does not exist then NULL is returned.
1593 Perl_get_av(pTHX_ const char *name, I32 create)
1595 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1604 =for apidoc p||get_hv
1606 Returns the HV of the specified Perl hash. If C<create> is set and the
1607 Perl variable does not exist then it will be created. If C<create> is not
1608 set and the variable does not exist then NULL is returned.
1614 Perl_get_hv(pTHX_ const char *name, I32 create)
1616 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1625 =for apidoc p||get_cv
1627 Returns the CV of the specified Perl subroutine. If C<create> is set and
1628 the Perl subroutine does not exist then it will be declared (which has the
1629 same effect as saying C<sub name;>). If C<create> is not set and the
1630 subroutine does not exist then NULL is returned.
1636 Perl_get_cv(pTHX_ const char *name, I32 create)
1638 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
1639 /* XXX unsafe for threads if eval_owner isn't held */
1640 /* XXX this is probably not what they think they're getting.
1641 * It has the same effect as "sub name;", i.e. just a forward
1643 if (create && !GvCVu(gv))
1644 return newSUB(start_subparse(FALSE, 0),
1645 newSVOP(OP_CONST, 0, newSVpv(name,0)),
1653 /* Be sure to refetch the stack pointer after calling these routines. */
1656 =for apidoc p||call_argv
1658 Performs a callback to the specified Perl sub. See L<perlcall>.
1664 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
1666 /* See G_* flags in cop.h */
1667 /* null terminated arg list */
1674 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
1679 return call_pv(sub_name, flags);
1683 =for apidoc p||call_pv
1685 Performs a callback to the specified Perl sub. See L<perlcall>.
1691 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
1692 /* name of the subroutine */
1693 /* See G_* flags in cop.h */
1695 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
1699 =for apidoc p||call_method
1701 Performs a callback to the specified Perl method. The blessed object must
1702 be on the stack. See L<perlcall>.
1708 Perl_call_method(pTHX_ const char *methname, I32 flags)
1709 /* name of the subroutine */
1710 /* See G_* flags in cop.h */
1712 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
1715 /* May be called with any of a CV, a GV, or an SV containing the name. */
1717 =for apidoc p||call_sv
1719 Performs a callback to the Perl sub whose name is in the SV. See
1726 Perl_call_sv(pTHX_ SV *sv, I32 flags)
1727 /* See G_* flags in cop.h */
1730 LOGOP myop; /* fake syntax tree node */
1733 volatile I32 retval = 0;
1735 bool oldcatch = CATCH_GET;
1740 if (flags & G_DISCARD) {
1745 Zero(&myop, 1, LOGOP);
1746 myop.op_next = Nullop;
1747 if (!(flags & G_NOARGS))
1748 myop.op_flags |= OPf_STACKED;
1749 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1750 (flags & G_ARRAY) ? OPf_WANT_LIST :
1755 EXTEND(PL_stack_sp, 1);
1756 *++PL_stack_sp = sv;
1758 oldscope = PL_scopestack_ix;
1760 if (PERLDB_SUB && PL_curstash != PL_debstash
1761 /* Handle first BEGIN of -d. */
1762 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
1763 /* Try harder, since this may have been a sighandler, thus
1764 * curstash may be meaningless. */
1765 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
1766 && !(flags & G_NODEBUG))
1767 PL_op->op_private |= OPpENTERSUB_DB;
1769 if (flags & G_METHOD) {
1770 Zero(&method_op, 1, UNOP);
1771 method_op.op_next = PL_op;
1772 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1773 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
1774 PL_op = (OP*)&method_op;
1777 if (!(flags & G_EVAL)) {
1779 call_body((OP*)&myop, FALSE);
1780 retval = PL_stack_sp - (PL_stack_base + oldmark);
1781 CATCH_SET(oldcatch);
1784 myop.op_other = (OP*)&myop;
1786 /* we're trying to emulate pp_entertry() here */
1788 register PERL_CONTEXT *cx;
1789 I32 gimme = GIMME_V;
1794 push_return(Nullop);
1795 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
1797 PL_eval_root = PL_op; /* Only needed so that goto works right. */
1799 PL_in_eval = EVAL_INEVAL;
1800 if (flags & G_KEEPERR)
1801 PL_in_eval |= EVAL_KEEPERR;
1807 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1809 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1816 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1818 call_body((OP*)&myop, FALSE);
1820 retval = PL_stack_sp - (PL_stack_base + oldmark);
1821 if (!(flags & G_KEEPERR))
1828 /* my_exit() was called */
1829 PL_curstash = PL_defstash;
1832 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1833 Perl_croak(aTHX_ "Callback called exit");
1838 PL_op = PL_restartop;
1842 PL_stack_sp = PL_stack_base + oldmark;
1843 if (flags & G_ARRAY)
1847 *++PL_stack_sp = &PL_sv_undef;
1852 if (PL_scopestack_ix > oldscope) {
1856 register PERL_CONTEXT *cx;
1868 if (flags & G_DISCARD) {
1869 PL_stack_sp = PL_stack_base + oldmark;
1878 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1880 S_vcall_body(pTHX_ va_list args)
1882 OP *myop = va_arg(args, OP*);
1883 int is_eval = va_arg(args, int);
1885 call_body(myop, is_eval);
1891 S_call_body(pTHX_ OP *myop, int is_eval)
1893 if (PL_op == myop) {
1895 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
1897 PL_op = Perl_pp_entersub(aTHX); /* this does */
1903 /* Eval a string. The G_EVAL flag is always assumed. */
1906 =for apidoc p||eval_sv
1908 Tells Perl to C<eval> the string in the SV.
1914 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
1916 /* See G_* flags in cop.h */
1919 UNOP myop; /* fake syntax tree node */
1920 volatile I32 oldmark = SP - PL_stack_base;
1921 volatile I32 retval = 0;
1927 if (flags & G_DISCARD) {
1934 Zero(PL_op, 1, UNOP);
1935 EXTEND(PL_stack_sp, 1);
1936 *++PL_stack_sp = sv;
1937 oldscope = PL_scopestack_ix;
1939 if (!(flags & G_NOARGS))
1940 myop.op_flags = OPf_STACKED;
1941 myop.op_next = Nullop;
1942 myop.op_type = OP_ENTEREVAL;
1943 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1944 (flags & G_ARRAY) ? OPf_WANT_LIST :
1946 if (flags & G_KEEPERR)
1947 myop.op_flags |= OPf_SPECIAL;
1949 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1951 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1958 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1960 call_body((OP*)&myop,TRUE);
1962 retval = PL_stack_sp - (PL_stack_base + oldmark);
1963 if (!(flags & G_KEEPERR))
1970 /* my_exit() was called */
1971 PL_curstash = PL_defstash;
1974 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1975 Perl_croak(aTHX_ "Callback called exit");
1980 PL_op = PL_restartop;
1984 PL_stack_sp = PL_stack_base + oldmark;
1985 if (flags & G_ARRAY)
1989 *++PL_stack_sp = &PL_sv_undef;
1995 if (flags & G_DISCARD) {
1996 PL_stack_sp = PL_stack_base + oldmark;
2006 =for apidoc p||eval_pv
2008 Tells Perl to C<eval> the given string and return an SV* result.
2014 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
2017 SV* sv = newSVpv(p, 0);
2019 eval_sv(sv, G_SCALAR);
2026 if (croak_on_error && SvTRUE(ERRSV)) {
2028 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
2034 /* Require a module. */
2037 =for apidoc p||require_pv
2039 Tells Perl to C<require> the file named by the string argument. It is
2040 analogous to the Perl code C<eval "require '$file'">. It's even
2041 implemented that way; consider using Perl_load_module instead.
2046 Perl_require_pv(pTHX_ const char *pv)
2050 PUSHSTACKi(PERLSI_REQUIRE);
2052 sv = sv_newmortal();
2053 sv_setpv(sv, "require '");
2056 eval_sv(sv, G_DISCARD);
2062 Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
2066 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
2067 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
2071 S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
2073 /* This message really ought to be max 23 lines.
2074 * Removed -h because the user already knows that option. Others? */
2076 static char *usage_msg[] = {
2077 "-0[octal] specify record separator (\\0, if no argument)",
2078 "-a autosplit mode with -n or -p (splits $_ into @F)",
2079 "-C enable native wide character system interfaces",
2080 "-c check syntax only (runs BEGIN and CHECK blocks)",
2081 "-d[:debugger] run program under debugger",
2082 "-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2083 "-e 'command' one line of program (several -e's allowed, omit programfile)",
2084 "-F/pattern/ split() pattern for -a switch (//'s are optional)",
2085 "-i[extension] edit <> files in place (makes backup if extension supplied)",
2086 "-Idirectory specify @INC/#include directory (several -I's allowed)",
2087 "-l[octal] enable line ending processing, specifies line terminator",
2088 "-[mM][-]module execute `use/no module...' before executing program",
2089 "-n assume 'while (<>) { ... }' loop around program",
2090 "-p assume loop like -n but print line also, like sed",
2091 "-P run program through C preprocessor before compilation",
2092 "-s enable rudimentary parsing for switches after programfile",
2093 "-S look for programfile using PATH environment variable",
2094 "-T enable tainting checks",
2095 "-u dump core after parsing program",
2096 "-U allow unsafe operations",
2097 "-v print version, subversion (includes VERY IMPORTANT perl info)",
2098 "-V[:variable] print configuration summary (or a single Config.pm variable)",
2099 "-w enable many useful warnings (RECOMMENDED)",
2100 "-W enable all warnings",
2101 "-X disable all warnings",
2102 "-x[directory] strip off text before #!perl line and perhaps cd to directory",
2106 char **p = usage_msg;
2108 PerlIO_printf(PerlIO_stdout(),
2109 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2112 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
2115 /* This routine handles any switches that can be given during run */
2118 Perl_moreswitches(pTHX_ char *s)
2126 numlen = 0; /* disallow underscores */
2127 rschar = (U32)scan_oct(s, 4, &numlen);
2128 SvREFCNT_dec(PL_nrs);
2129 if (rschar & ~((U8)~0))
2130 PL_nrs = &PL_sv_undef;
2131 else if (!rschar && numlen >= 2)
2132 PL_nrs = newSVpvn("", 0);
2135 PL_nrs = newSVpvn(&ch, 1);
2140 PL_widesyscalls = TRUE;
2145 PL_splitstr = savepv(s + 1);
2159 /* The following permits -d:Mod to accepts arguments following an =
2160 in the fashion that -MSome::Mod does. */
2161 if (*s == ':' || *s == '=') {
2164 sv = newSVpv("use Devel::", 0);
2166 /* We now allow -d:Module=Foo,Bar */
2167 while(isALNUM(*s) || *s==':') ++s;
2169 sv_catpv(sv, start);
2171 sv_catpvn(sv, start, s-start);
2172 sv_catpv(sv, " split(/,/,q{");
2177 my_setenv("PERL5DB", SvPV(sv, PL_na));
2180 PL_perldb = PERLDB_ALL;
2188 if (isALPHA(s[1])) {
2189 /* if adding extra options, remember to update DEBUG_MASK */
2190 static char debopts[] = "psltocPmfrxuLHXDSTR";
2193 for (s++; *s && (d = strchr(debopts,*s)); s++)
2194 PL_debug |= 1 << (d - debopts);
2197 PL_debug = atoi(s+1);
2198 for (s++; isDIGIT(*s); s++) ;
2200 PL_debug |= DEBUG_TOP_FLAG;
2202 if (ckWARN_d(WARN_DEBUGGING))
2203 Perl_warner(aTHX_ WARN_DEBUGGING,
2204 "Recompile perl with -DDEBUGGING to use -D switch\n");
2205 for (s++; isALNUM(*s); s++) ;
2211 usage(PL_origargv[0]);
2215 Safefree(PL_inplace);
2216 PL_inplace = savepv(s+1);
2218 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
2221 if (*s == '-') /* Additional switches on #! line. */
2225 case 'I': /* -I handled both here and in parse_perl() */
2228 while (*s && isSPACE(*s))
2233 /* ignore trailing spaces (possibly followed by other switches) */
2235 for (e = p; *e && !isSPACE(*e); e++) ;
2239 } while (*p && *p != '-');
2240 e = savepvn(s, e-s);
2241 incpush(e, TRUE, TRUE);
2248 Perl_croak(aTHX_ "No directory specified for -I");
2254 SvREFCNT_dec(PL_ors_sv);
2258 PL_ors_sv = newSVpvn("\n",1);
2259 numlen = 0; /* disallow underscores */
2260 *SvPVX(PL_ors_sv) = (char)scan_oct(s, 3 + (*s == '0'), &numlen);
2264 if (RsPARA(PL_nrs)) {
2265 PL_ors_sv = newSVpvn("\n\n",2);
2268 PL_ors_sv = newSVsv(PL_nrs);
2273 forbid_setid("-M"); /* XXX ? */
2276 forbid_setid("-m"); /* XXX ? */
2281 /* -M-foo == 'no foo' */
2282 if (*s == '-') { use = "no "; ++s; }
2283 sv = newSVpv(use,0);
2285 /* We allow -M'Module qw(Foo Bar)' */
2286 while(isALNUM(*s) || *s==':') ++s;
2288 sv_catpv(sv, start);
2289 if (*(start-1) == 'm') {
2291 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
2292 sv_catpv( sv, " ()");
2296 Perl_croak(aTHX_ "Module name required with -%c option",
2298 sv_catpvn(sv, start, s-start);
2299 sv_catpv(sv, " split(/,/,q{");
2305 PL_preambleav = newAV();
2306 av_push(PL_preambleav, sv);
2309 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
2321 PL_doswitches = TRUE;
2326 Perl_croak(aTHX_ "Too late for \"-T\" option");
2330 #ifdef MACOS_TRADITIONAL
2331 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2333 PL_do_undump = TRUE;
2342 PerlIO_printf(PerlIO_stdout(),
2343 Perl_form(aTHX_ "\nThis is perl, v%"VDf" built for %s",
2344 PL_patchlevel, ARCHNAME));
2346 /* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
2347 PerlIO_printf(PerlIO_stdout(),
2348 Perl_form(aTHX_ "\nThis is perl, version %vd\n", PL_patchlevel));
2349 PerlIO_printf(PerlIO_stdout(),
2350 Perl_form(aTHX_ " built under %s at %s %s\n",
2351 OSNAME, __DATE__, __TIME__));
2352 PerlIO_printf(PerlIO_stdout(),
2353 Perl_form(aTHX_ " OS Specific Release: %s\n",
2357 #if defined(LOCAL_PATCH_COUNT)
2358 if (LOCAL_PATCH_COUNT > 0)
2359 PerlIO_printf(PerlIO_stdout(),
2360 "\n(with %d registered patch%s, "
2361 "see perl -V for more detail)",
2362 (int)LOCAL_PATCH_COUNT,
2363 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
2366 PerlIO_printf(PerlIO_stdout(),
2367 "\n\nCopyright 1987-2001, Larry Wall\n");
2368 #ifdef MACOS_TRADITIONAL
2369 PerlIO_printf(PerlIO_stdout(),
2370 "\nMac OS port Copyright (c) 1991-2001, Matthias Neeracher\n");
2373 PerlIO_printf(PerlIO_stdout(),
2374 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
2377 PerlIO_printf(PerlIO_stdout(),
2378 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2379 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
2382 PerlIO_printf(PerlIO_stdout(),
2383 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2384 "Version 5 port Copyright (c) 1994-1999, Andreas Kaiser, Ilya Zakharevich\n");
2387 PerlIO_printf(PerlIO_stdout(),
2388 "atariST series port, ++jrb bammi@cadence.com\n");
2391 PerlIO_printf(PerlIO_stdout(),
2392 "BeOS port Copyright Tom Spindler, 1997-1999\n");
2395 PerlIO_printf(PerlIO_stdout(),
2396 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2001\n");
2399 PerlIO_printf(PerlIO_stdout(),
2400 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
2403 PerlIO_printf(PerlIO_stdout(),
2404 "Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n");
2407 PerlIO_printf(PerlIO_stdout(),
2408 "VM/ESA port by Neale Ferguson, 1998-1999\n");
2411 PerlIO_printf(PerlIO_stdout(),
2412 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
2415 PerlIO_printf(PerlIO_stdout(),
2416 "MiNT port by Guido Flohr, 1997-1999\n");
2419 PerlIO_printf(PerlIO_stdout(),
2420 "EPOC port by Olaf Flebbe, 1999-2000\n");
2422 #ifdef BINARY_BUILD_NOTICE
2423 BINARY_BUILD_NOTICE;
2425 PerlIO_printf(PerlIO_stdout(),
2427 Perl may be copied only under the terms of either the Artistic License or the\n\
2428 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
2429 Complete documentation for Perl, including FAQ lists, should be found on\n\
2430 this system using `man perl' or `perldoc perl'. If you have access to the\n\
2431 Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
2434 if (! (PL_dowarn & G_WARN_ALL_MASK))
2435 PL_dowarn |= G_WARN_ON;
2439 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
2440 PL_compiling.cop_warnings = pWARN_ALL ;
2444 PL_dowarn = G_WARN_ALL_OFF;
2445 PL_compiling.cop_warnings = pWARN_NONE ;
2450 if (s[1] == '-') /* Additional switches on #! line. */
2455 #if defined(WIN32) || !defined(PERL_STRICT_CR)
2461 #ifdef ALTERNATE_SHEBANG
2462 case 'S': /* OS/2 needs -S on "extproc" line. */
2470 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
2475 /* compliments of Tom Christiansen */
2477 /* unexec() can be found in the Gnu emacs distribution */
2478 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
2481 Perl_my_unexec(pTHX)
2489 prog = newSVpv(BIN_EXP, 0);
2490 sv_catpv(prog, "/perl");
2491 file = newSVpv(PL_origfilename, 0);
2492 sv_catpv(file, ".perldump");
2494 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2495 /* unexec prints msg to stderr in case of failure */
2496 PerlProc_exit(status);
2499 # include <lib$routines.h>
2500 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
2502 ABORT(); /* for use with undump */
2507 /* initialize curinterp */
2512 #ifdef PERL_OBJECT /* XXX kludge */
2515 PL_chopset = " \n-"; \
2516 PL_copline = NOLINE; \
2517 PL_curcop = &PL_compiling;\
2518 PL_curcopdb = NULL; \
2520 PL_dumpindent = 4; \
2521 PL_laststatval = -1; \
2522 PL_laststype = OP_STAT; \
2523 PL_maxscream = -1; \
2524 PL_maxsysfd = MAXSYSFD; \
2525 PL_statname = Nullsv; \
2526 PL_tmps_floor = -1; \
2528 PL_op_mask = NULL; \
2529 PL_laststatval = -1; \
2530 PL_laststype = OP_STAT; \
2531 PL_mess_sv = Nullsv; \
2532 PL_splitstr = " "; \
2533 PL_generation = 100; \
2534 PL_exitlist = NULL; \
2535 PL_exitlistlen = 0; \
2537 PL_in_clean_objs = FALSE; \
2538 PL_in_clean_all = FALSE; \
2539 PL_profiledata = NULL; \
2541 PL_rsfp_filters = Nullav; \
2546 # ifdef MULTIPLICITY
2547 # define PERLVAR(var,type)
2548 # define PERLVARA(var,n,type)
2549 # if defined(PERL_IMPLICIT_CONTEXT)
2550 # if defined(USE_THREADS)
2551 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2552 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2553 # else /* !USE_THREADS */
2554 # define PERLVARI(var,type,init) aTHX->var = init;
2555 # define PERLVARIC(var,type,init) aTHX->var = init;
2556 # endif /* USE_THREADS */
2558 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2559 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2561 # include "intrpvar.h"
2562 # ifndef USE_THREADS
2563 # include "thrdvar.h"
2570 # define PERLVAR(var,type)
2571 # define PERLVARA(var,n,type)
2572 # define PERLVARI(var,type,init) PL_##var = init;
2573 # define PERLVARIC(var,type,init) PL_##var = init;
2574 # include "intrpvar.h"
2575 # ifndef USE_THREADS
2576 # include "thrdvar.h"
2588 S_init_main_stash(pTHX)
2592 /* Note that strtab is a rather special HV. Assumptions are made
2593 about not iterating on it, and not adding tie magic to it.
2594 It is properly deallocated in perl_destruct() */
2595 PL_strtab = newHV();
2597 MUTEX_INIT(&PL_strtab_mutex);
2599 HvSHAREKEYS_off(PL_strtab); /* mandatory */
2600 hv_ksplit(PL_strtab, 512);
2602 PL_curstash = PL_defstash = newHV();
2603 PL_curstname = newSVpvn("main",4);
2604 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2605 SvREFCNT_dec(GvHV(gv));
2606 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
2608 HvNAME(PL_defstash) = savepv("main");
2609 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2610 GvMULTI_on(PL_incgv);
2611 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2612 GvMULTI_on(PL_hintgv);
2613 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2614 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2615 GvMULTI_on(PL_errgv);
2616 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2617 GvMULTI_on(PL_replgv);
2618 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
2619 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2620 sv_setpvn(ERRSV, "", 0);
2621 PL_curstash = PL_defstash;
2622 CopSTASH_set(&PL_compiling, PL_defstash);
2623 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
2624 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
2625 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
2626 /* We must init $/ before switches are processed. */
2627 sv_setpvn(get_sv("/", TRUE), "\n", 1);
2631 S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
2636 PL_origfilename = savepv("-e");
2639 /* if find_script() returns, it returns a malloc()-ed value */
2640 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
2642 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2643 char *s = scriptname + 8;
2644 *fdscript = atoi(s);
2648 scriptname = savepv(s + 1);
2649 Safefree(PL_origfilename);
2650 PL_origfilename = scriptname;
2656 Safefree(CopFILE(PL_curcop));
2658 SvREFCNT_dec(CopFILEGV(PL_curcop));
2660 CopFILE_set(PL_curcop, PL_origfilename);
2661 if (strEQ(PL_origfilename,"-"))
2663 if (*fdscript >= 0) {
2664 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
2665 #if defined(HAS_FCNTL) && defined(F_SETFD)
2667 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2670 else if (PL_preprocess) {
2671 char *cpp_cfg = CPPSTDIN;
2672 SV *cpp = newSVpvn("",0);
2673 SV *cmd = NEWSV(0,0);
2675 if (strEQ(cpp_cfg, "cppstdin"))
2676 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
2677 sv_catpv(cpp, cpp_cfg);
2679 sv_catpvn(sv, "-I", 2);
2680 sv_catpv(sv,PRIVLIB_EXP);
2682 DEBUG_P(PerlIO_printf(Perl_debug_log,
2683 "PL_preprocess: scriptname=\"%s\", cpp=\"%s\", sv=\"%s\", CPPMINUS=\"%s\"\n",
2684 scriptname, SvPVX (cpp), SvPVX (sv), CPPMINUS));
2685 #if defined(MSDOS) || defined(WIN32)
2686 Perl_sv_setpvf(aTHX_ cmd, "\
2687 sed %s -e \"/^[^#]/b\" \
2688 -e \"/^#[ ]*include[ ]/b\" \
2689 -e \"/^#[ ]*define[ ]/b\" \
2690 -e \"/^#[ ]*if[ ]/b\" \
2691 -e \"/^#[ ]*ifdef[ ]/b\" \
2692 -e \"/^#[ ]*ifndef[ ]/b\" \
2693 -e \"/^#[ ]*else/b\" \
2694 -e \"/^#[ ]*elif[ ]/b\" \
2695 -e \"/^#[ ]*undef[ ]/b\" \
2696 -e \"/^#[ ]*endif/b\" \
2698 %s | %"SVf" -C %"SVf" %s",
2699 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
2702 Perl_sv_setpvf(aTHX_ cmd, "\
2703 %s %s -e '/^[^#]/b' \
2704 -e '/^#[ ]*include[ ]/b' \
2705 -e '/^#[ ]*define[ ]/b' \
2706 -e '/^#[ ]*if[ ]/b' \
2707 -e '/^#[ ]*ifdef[ ]/b' \
2708 -e '/^#[ ]*ifndef[ ]/b' \
2709 -e '/^#[ ]*else/b' \
2710 -e '/^#[ ]*elif[ ]/b' \
2711 -e '/^#[ ]*undef[ ]/b' \
2712 -e '/^#[ ]*endif/b' \
2714 %s | %"SVf" %"SVf" %s",
2716 Perl_sv_setpvf(aTHX_ cmd, "\
2717 %s %s -e '/^[^#]/b' \
2718 -e '/^#[ ]*include[ ]/b' \
2719 -e '/^#[ ]*define[ ]/b' \
2720 -e '/^#[ ]*if[ ]/b' \
2721 -e '/^#[ ]*ifdef[ ]/b' \
2722 -e '/^#[ ]*ifndef[ ]/b' \
2723 -e '/^#[ ]*else/b' \
2724 -e '/^#[ ]*elif[ ]/b' \
2725 -e '/^#[ ]*undef[ ]/b' \
2726 -e '/^#[ ]*endif/b' \
2728 %s | %"SVf" -C %"SVf" %s",
2735 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
2737 scriptname, cpp, sv, CPPMINUS);
2738 PL_doextract = FALSE;
2739 #ifdef IAMSUID /* actually, this is caught earlier */
2740 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
2742 (void)seteuid(PL_uid); /* musn't stay setuid root */
2745 (void)setreuid((Uid_t)-1, PL_uid);
2747 #ifdef HAS_SETRESUID
2748 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
2750 PerlProc_setuid(PL_uid);
2754 if (PerlProc_geteuid() != PL_uid)
2755 Perl_croak(aTHX_ "Can't do seteuid!\n");
2757 #endif /* IAMSUID */
2758 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
2762 else if (!*scriptname) {
2763 forbid_setid("program input from stdin");
2764 PL_rsfp = PerlIO_stdin();
2767 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
2768 #if defined(HAS_FCNTL) && defined(F_SETFD)
2770 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2775 #ifndef IAMSUID /* in case script is not readable before setuid */
2777 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
2778 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2781 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
2782 (int)PERL_REVISION, (int)PERL_VERSION,
2783 (int)PERL_SUBVERSION), PL_origargv);
2784 Perl_croak(aTHX_ "Can't do setuid\n");
2790 Perl_croak(aTHX_ "Can't open perl script: %s\n",
2793 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
2794 CopFILE(PL_curcop), Strerror(errno));
2800 * I_SYSSTATVFS HAS_FSTATVFS
2802 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
2803 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2804 * here so that metaconfig picks them up. */
2808 S_fd_on_nosuid_fs(pTHX_ int fd)
2810 int check_okay = 0; /* able to do all the required sys/libcalls */
2811 int on_nosuid = 0; /* the fd is on a nosuid fs */
2813 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
2814 * fstatvfs() is UNIX98.
2815 * fstatfs() is 4.3 BSD.
2816 * ustat()+getmnt() is pre-4.3 BSD.
2817 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2818 * an irrelevant filesystem while trying to reach the right one.
2821 #undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2823 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2824 defined(HAS_FSTATVFS)
2825 # define FD_ON_NOSUID_CHECK_OKAY
2826 struct statvfs stfs;
2828 check_okay = fstatvfs(fd, &stfs) == 0;
2829 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
2830 # endif /* fstatvfs */
2832 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2833 defined(PERL_MOUNT_NOSUID) && \
2834 defined(HAS_FSTATFS) && \
2835 defined(HAS_STRUCT_STATFS) && \
2836 defined(HAS_STRUCT_STATFS_F_FLAGS)
2837 # define FD_ON_NOSUID_CHECK_OKAY
2840 check_okay = fstatfs(fd, &stfs) == 0;
2841 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
2842 # endif /* fstatfs */
2844 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2845 defined(PERL_MOUNT_NOSUID) && \
2846 defined(HAS_FSTAT) && \
2847 defined(HAS_USTAT) && \
2848 defined(HAS_GETMNT) && \
2849 defined(HAS_STRUCT_FS_DATA) && \
2851 # define FD_ON_NOSUID_CHECK_OKAY
2854 if (fstat(fd, &fdst) == 0) {
2856 if (ustat(fdst.st_dev, &us) == 0) {
2858 /* NOSTAT_ONE here because we're not examining fields which
2859 * vary between that case and STAT_ONE. */
2860 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
2861 size_t cmplen = sizeof(us.f_fname);
2862 if (sizeof(fsd.fd_req.path) < cmplen)
2863 cmplen = sizeof(fsd.fd_req.path);
2864 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2865 fdst.st_dev == fsd.fd_req.dev) {
2867 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2873 # endif /* fstat+ustat+getmnt */
2875 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2876 defined(HAS_GETMNTENT) && \
2877 defined(HAS_HASMNTOPT) && \
2878 defined(MNTOPT_NOSUID)
2879 # define FD_ON_NOSUID_CHECK_OKAY
2880 FILE *mtab = fopen("/etc/mtab", "r");
2881 struct mntent *entry;
2882 struct stat stb, fsb;
2884 if (mtab && (fstat(fd, &stb) == 0)) {
2885 while (entry = getmntent(mtab)) {
2886 if (stat(entry->mnt_dir, &fsb) == 0
2887 && fsb.st_dev == stb.st_dev)
2889 /* found the filesystem */
2891 if (hasmntopt(entry, MNTOPT_NOSUID))
2894 } /* A single fs may well fail its stat(). */
2899 # endif /* getmntent+hasmntopt */
2902 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
2905 #endif /* IAMSUID */
2908 S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
2914 /* do we need to emulate setuid on scripts? */
2916 /* This code is for those BSD systems that have setuid #! scripts disabled
2917 * in the kernel because of a security problem. Merely defining DOSUID
2918 * in perl will not fix that problem, but if you have disabled setuid
2919 * scripts in the kernel, this will attempt to emulate setuid and setgid
2920 * on scripts that have those now-otherwise-useless bits set. The setuid
2921 * root version must be called suidperl or sperlN.NNN. If regular perl
2922 * discovers that it has opened a setuid script, it calls suidperl with
2923 * the same argv that it had. If suidperl finds that the script it has
2924 * just opened is NOT setuid root, it sets the effective uid back to the
2925 * uid. We don't just make perl setuid root because that loses the
2926 * effective uid we had before invoking perl, if it was different from the
2929 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2930 * be defined in suidperl only. suidperl must be setuid root. The
2931 * Configure script will set this up for you if you want it.
2937 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
2938 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
2939 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
2944 #ifndef HAS_SETREUID
2945 /* On this access check to make sure the directories are readable,
2946 * there is actually a small window that the user could use to make
2947 * filename point to an accessible directory. So there is a faint
2948 * chance that someone could execute a setuid script down in a
2949 * non-accessible directory. I don't know what to do about that.
2950 * But I don't think it's too important. The manual lies when
2951 * it says access() is useful in setuid programs.
2953 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
2954 Perl_croak(aTHX_ "Permission denied");
2956 /* If we can swap euid and uid, then we can determine access rights
2957 * with a simple stat of the file, and then compare device and
2958 * inode to make sure we did stat() on the same file we opened.
2959 * Then we just have to make sure he or she can execute it.
2962 struct stat tmpstatbuf;
2966 setreuid(PL_euid,PL_uid) < 0
2969 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
2972 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
2973 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
2974 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
2975 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
2976 #if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
2977 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
2978 Perl_croak(aTHX_ "Permission denied");
2980 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
2981 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
2982 (void)PerlIO_close(PL_rsfp);
2983 Perl_croak(aTHX_ "Permission denied\n");
2987 setreuid(PL_uid,PL_euid) < 0
2989 # if defined(HAS_SETRESUID)
2990 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
2993 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
2994 Perl_croak(aTHX_ "Can't reswap uid and euid");
2995 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
2996 Perl_croak(aTHX_ "Permission denied\n");
2998 #endif /* HAS_SETREUID */
2999 #endif /* IAMSUID */
3001 if (!S_ISREG(PL_statbuf.st_mode))
3002 Perl_croak(aTHX_ "Permission denied");
3003 if (PL_statbuf.st_mode & S_IWOTH)
3004 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
3005 PL_doswitches = FALSE; /* -s is insecure in suid */
3006 CopLINE_inc(PL_curcop);
3007 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
3008 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
3009 Perl_croak(aTHX_ "No #! line");
3010 s = SvPV(PL_linestr,n_a)+2;
3012 while (!isSPACE(*s)) s++;
3013 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
3014 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
3015 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
3016 Perl_croak(aTHX_ "Not a perl script");
3017 while (*s == ' ' || *s == '\t') s++;
3019 * #! arg must be what we saw above. They can invoke it by
3020 * mentioning suidperl explicitly, but they may not add any strange
3021 * arguments beyond what #! says if they do invoke suidperl that way.
3023 len = strlen(validarg);
3024 if (strEQ(validarg," PHOOEY ") ||
3025 strnNE(s,validarg,len) || !isSPACE(s[len]))
3026 Perl_croak(aTHX_ "Args must match #! line");
3029 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
3030 PL_euid == PL_statbuf.st_uid)
3032 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3033 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3034 #endif /* IAMSUID */
3036 if (PL_euid) { /* oops, we're not the setuid root perl */
3037 (void)PerlIO_close(PL_rsfp);
3040 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
3041 (int)PERL_REVISION, (int)PERL_VERSION,
3042 (int)PERL_SUBVERSION), PL_origargv);
3044 Perl_croak(aTHX_ "Can't do setuid\n");
3047 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
3049 (void)setegid(PL_statbuf.st_gid);
3052 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
3054 #ifdef HAS_SETRESGID
3055 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
3057 PerlProc_setgid(PL_statbuf.st_gid);
3061 if (PerlProc_getegid() != PL_statbuf.st_gid)
3062 Perl_croak(aTHX_ "Can't do setegid!\n");
3064 if (PL_statbuf.st_mode & S_ISUID) {
3065 if (PL_statbuf.st_uid != PL_euid)
3067 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
3070 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
3072 #ifdef HAS_SETRESUID
3073 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
3075 PerlProc_setuid(PL_statbuf.st_uid);
3079 if (PerlProc_geteuid() != PL_statbuf.st_uid)
3080 Perl_croak(aTHX_ "Can't do seteuid!\n");
3082 else if (PL_uid) { /* oops, mustn't run as root */
3084 (void)seteuid((Uid_t)PL_uid);
3087 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
3089 #ifdef HAS_SETRESUID
3090 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
3092 PerlProc_setuid((Uid_t)PL_uid);
3096 if (PerlProc_geteuid() != PL_uid)
3097 Perl_croak(aTHX_ "Can't do seteuid!\n");
3100 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
3101 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
3104 else if (PL_preprocess)
3105 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
3106 else if (fdscript >= 0)
3107 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
3109 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
3111 /* We absolutely must clear out any saved ids here, so we */
3112 /* exec the real perl, substituting fd script for scriptname. */
3113 /* (We pass script name as "subdir" of fd, which perl will grok.) */
3114 PerlIO_rewind(PL_rsfp);
3115 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
3116 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3117 if (!PL_origargv[which])
3118 Perl_croak(aTHX_ "Permission denied");
3119 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
3120 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
3121 #if defined(HAS_FCNTL) && defined(F_SETFD)
3122 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
3124 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
3125 (int)PERL_REVISION, (int)PERL_VERSION,
3126 (int)PERL_SUBVERSION), PL_origargv);/* try again */
3127 Perl_croak(aTHX_ "Can't do setuid\n");
3128 #endif /* IAMSUID */
3130 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
3131 #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
3132 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3133 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3135 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3138 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3139 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3140 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3141 /* not set-id, must be wrapped */
3147 S_find_beginning(pTHX)
3149 register char *s, *s2;
3151 /* skip forward in input to the real script? */
3154 #ifdef MACOS_TRADITIONAL
3155 /* Since the Mac OS does not honor #! arguments for us, we do it ourselves */
3157 while (PL_doextract || gMacPerl_AlwaysExtract) {
3158 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3159 if (!gMacPerl_AlwaysExtract)
3160 Perl_croak(aTHX_ "No Perl script found in input\n");
3162 if (PL_doextract) /* require explicit override ? */
3163 if (!OverrideExtract(PL_origfilename))
3164 Perl_croak(aTHX_ "User aborted script\n");
3166 PL_doextract = FALSE;
3168 /* Pater peccavi, file does not have #! */
3169 PerlIO_rewind(PL_rsfp);
3174 while (PL_doextract) {
3175 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
3176 Perl_croak(aTHX_ "No Perl script found in input\n");
3179 if (*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))) {
3180 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3181 PL_doextract = FALSE;
3182 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3184 while (*s == ' ' || *s == '\t') s++;
3186 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3187 if (strnEQ(s2-4,"perl",4))
3189 while ((s = moreswitches(s)))
3192 #ifdef MACOS_TRADITIONAL
3203 PL_uid = PerlProc_getuid();
3204 PL_euid = PerlProc_geteuid();
3205 PL_gid = PerlProc_getgid();
3206 PL_egid = PerlProc_getegid();
3208 PL_uid |= PL_gid << 16;
3209 PL_euid |= PL_egid << 16;
3211 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3215 S_forbid_setid(pTHX_ char *s)
3217 if (PL_euid != PL_uid)
3218 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3219 if (PL_egid != PL_gid)
3220 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
3224 Perl_init_debugger(pTHX)
3226 HV *ostash = PL_curstash;
3228 PL_curstash = PL_debstash;
3229 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3230 AvREAL_off(PL_dbargs);
3231 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3232 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3233 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
3234 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3235 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
3236 sv_setiv(PL_DBsingle, 0);
3237 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
3238 sv_setiv(PL_DBtrace, 0);
3239 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
3240 sv_setiv(PL_DBsignal, 0);
3241 PL_curstash = ostash;
3244 #ifndef STRESS_REALLOC
3245 #define REASONABLE(size) (size)
3247 #define REASONABLE(size) (1) /* unreasonable */
3251 Perl_init_stacks(pTHX)
3253 /* start with 128-item stack and 8K cxstack */
3254 PL_curstackinfo = new_stackinfo(REASONABLE(128),
3255 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3256 PL_curstackinfo->si_type = PERLSI_MAIN;
3257 PL_curstack = PL_curstackinfo->si_stack;
3258 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
3260 PL_stack_base = AvARRAY(PL_curstack);
3261 PL_stack_sp = PL_stack_base;
3262 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
3264 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3267 PL_tmps_max = REASONABLE(128);
3269 New(54,PL_markstack,REASONABLE(32),I32);
3270 PL_markstack_ptr = PL_markstack;
3271 PL_markstack_max = PL_markstack + REASONABLE(32);
3275 New(54,PL_scopestack,REASONABLE(32),I32);
3276 PL_scopestack_ix = 0;
3277 PL_scopestack_max = REASONABLE(32);
3279 New(54,PL_savestack,REASONABLE(128),ANY);
3280 PL_savestack_ix = 0;
3281 PL_savestack_max = REASONABLE(128);
3283 New(54,PL_retstack,REASONABLE(16),OP*);
3285 PL_retstack_max = REASONABLE(16);
3293 while (PL_curstackinfo->si_next)
3294 PL_curstackinfo = PL_curstackinfo->si_next;
3295 while (PL_curstackinfo) {
3296 PERL_SI *p = PL_curstackinfo->si_prev;
3297 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3298 Safefree(PL_curstackinfo->si_cxstack);
3299 Safefree(PL_curstackinfo);
3300 PL_curstackinfo = p;
3302 Safefree(PL_tmps_stack);
3303 Safefree(PL_markstack);
3304 Safefree(PL_scopestack);
3305 Safefree(PL_savestack);
3306 Safefree(PL_retstack);
3310 static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */
3321 lex_start(PL_linestr);
3323 PL_subname = newSVpvn("main",4);
3327 S_init_predump_symbols(pTHX)
3332 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3333 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3334 GvMULTI_on(PL_stdingv);
3335 io = GvIOp(PL_stdingv);
3336 IoTYPE(io) = IoTYPE_RDONLY;
3337 IoIFP(io) = PerlIO_stdin();
3338 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
3340 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3342 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
3345 IoTYPE(io) = IoTYPE_WRONLY;
3346 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
3348 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
3350 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3352 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3353 GvMULTI_on(PL_stderrgv);
3354 io = GvIOp(PL_stderrgv);
3355 IoTYPE(io) = IoTYPE_WRONLY;
3356 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
3357 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
3359 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3361 PL_statname = NEWSV(66,0); /* last filename we did stat on */
3364 Safefree(PL_osname);
3365 PL_osname = savepv(OSNAME);
3369 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
3374 #ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3375 char **dup_env_base = 0;
3376 int dup_env_count = 0;
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 PL_toptarget = NEWSV(0,0);
3397 sv_upgrade(PL_toptarget, SVt_PVFM);
3398 sv_setpvn(PL_toptarget, "", 0);
3399 PL_bodytarget = NEWSV(0,0);
3400 sv_upgrade(PL_bodytarget, SVt_PVFM);
3401 sv_setpvn(PL_bodytarget, "", 0);
3402 PL_formtarget = PL_bodytarget;
3405 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
3406 #ifdef MACOS_TRADITIONAL
3407 /* $0 is not majick on a Mac */
3408 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3410 sv_setpv(GvSV(tmpgv),PL_origfilename);
3411 magicname("0", "0", 1);
3414 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV)))
3416 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
3418 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
3420 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3421 GvMULTI_on(PL_argvgv);
3422 (void)gv_AVadd(PL_argvgv);
3423 av_clear(GvAVn(PL_argvgv));
3424 for (; argc > 0; argc--,argv++) {
3425 SV *sv = newSVpv(argv[0],0);
3426 av_push(GvAVn(PL_argvgv),sv);
3427 if (PL_widesyscalls)
3428 (void)sv_utf8_decode(sv);
3431 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
3433 GvMULTI_on(PL_envgv);
3434 hv = GvHVn(PL_envgv);
3435 hv_magic(hv, Nullgv, PERL_MAGIC_env);
3436 #ifdef USE_ENVIRON_ARRAY
3437 /* Note that if the supplied env parameter is actually a copy
3438 of the global environ then it may now point to free'd memory
3439 if the environment has been modified since. To avoid this
3440 problem we treat env==NULL as meaning 'use the default'
3445 environ[0] = Nullch;
3446 #ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3449 for (env_base = env; *env; env++)
3451 if ((dup_env_base = (char **)
3452 safesysmalloc( sizeof(char *) * (dup_env_count+1) ))) {
3454 for (env = env_base, dup_env = dup_env_base;
3457 /* With environ one needs to use safesysmalloc(). */
3458 *dup_env = safesysmalloc(strlen(*env) + 1);
3459 (void)strcpy(*dup_env, *env);
3465 #endif /* NEED_ENVIRON_DUP_FOR_MODIFY */
3466 for (; *env; env++) {
3467 if (!(s = strchr(*env,'=')))
3473 sv = newSVpv(s--,0);
3474 (void)hv_store(hv, *env, s - *env, sv, 0);
3477 #ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3480 for (dup_env = dup_env_base; *dup_env; dup_env++)
3481 safesysfree(*dup_env);
3482 safesysfree(dup_env_base);
3484 #endif /* NEED_ENVIRON_DUP_FOR_MODIFY */
3485 #endif /* USE_ENVIRON_ARRAY */
3488 if ((tmpgv = gv_fetchpv("$",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);
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_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3808 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3809 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3810 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3811 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
3813 PL_reginterp_cnt = 0;
3817 #endif /* USE_THREADS */
3820 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
3823 line_t oldline = CopLINE(PL_curcop);
3829 while (AvFILL(paramList) >= 0) {
3830 cv = (CV*)av_shift(paramList);
3831 if ((PL_minus_c & 0x10) && (paramList == PL_beginav)) {
3832 /* save PL_beginav for compiler */
3833 if (! PL_beginav_save)
3834 PL_beginav_save = newAV();
3835 av_push(PL_beginav_save, (SV*)cv);
3839 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3840 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_list_body), cv);
3846 #ifndef PERL_FLEXIBLE_EXCEPTIONS
3850 (void)SvPV(atsv, len);
3853 PL_curcop = &PL_compiling;
3854 CopLINE_set(PL_curcop, oldline);
3855 if (paramList == PL_beginav)
3856 sv_catpv(atsv, "BEGIN failed--compilation aborted");
3858 Perl_sv_catpvf(aTHX_ atsv,
3859 "%s failed--call queue aborted",
3860 paramList == PL_checkav ? "CHECK"
3861 : paramList == PL_initav ? "INIT"
3863 while (PL_scopestack_ix > oldscope)
3866 Perl_croak(aTHX_ "%s", SvPVx(atsv, n_a));
3873 /* my_exit() was called */
3874 while (PL_scopestack_ix > oldscope)
3877 PL_curstash = PL_defstash;
3878 PL_curcop = &PL_compiling;
3879 CopLINE_set(PL_curcop, oldline);
3881 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
3882 if (paramList == PL_beginav)
3883 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
3885 Perl_croak(aTHX_ "%s failed--call queue aborted",
3886 paramList == PL_checkav ? "CHECK"
3887 : paramList == PL_initav ? "INIT"
3894 PL_curcop = &PL_compiling;
3895 CopLINE_set(PL_curcop, oldline);
3898 PerlIO_printf(Perl_error_log, "panic: restartop\n");
3906 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3908 S_vcall_list_body(pTHX_ va_list args)
3910 CV *cv = va_arg(args, CV*);
3911 return call_list_body(cv);
3916 S_call_list_body(pTHX_ CV *cv)
3918 PUSHMARK(PL_stack_sp);
3919 call_sv((SV*)cv, G_EVAL|G_DISCARD);
3924 Perl_my_exit(pTHX_ U32 status)
3926 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
3927 thr, (unsigned long) status));
3936 STATUS_NATIVE_SET(status);
3943 Perl_my_failure_exit(pTHX)
3946 if (vaxc$errno & 1) {
3947 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
3948 STATUS_NATIVE_SET(44);
3951 if (!vaxc$errno && errno) /* unlikely */
3952 STATUS_NATIVE_SET(44);
3954 STATUS_NATIVE_SET(vaxc$errno);
3959 STATUS_POSIX_SET(errno);
3961 exitstatus = STATUS_POSIX >> 8;
3962 if (exitstatus & 255)
3963 STATUS_POSIX_SET(exitstatus);
3965 STATUS_POSIX_SET(255);
3972 S_my_exit_jump(pTHX)
3974 register PERL_CONTEXT *cx;
3979 SvREFCNT_dec(PL_e_script);
3980 PL_e_script = Nullsv;
3983 POPSTACK_TO(PL_mainstack);
3984 if (cxstack_ix >= 0) {
3987 POPBLOCK(cx,PL_curpm);
3999 read_e_script(pTHXo_ int idx, SV *buf_sv, int maxlen)
4002 p = SvPVX(PL_e_script);
4003 nl = strchr(p, '\n');
4004 nl = (nl) ? nl+1 : SvEND(PL_e_script);
4006 filter_del(read_e_script);
4009 sv_catpvn(buf_sv, p, nl-p);
4010 sv_chop(PL_e_script, nl);