3 * Copyright (c) 1987-2002 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 =head1 Embedding Functions
107 =for apidoc perl_alloc
109 Allocates a new Perl interpreter. See L<perlembed>.
117 PerlInterpreter *my_perl;
118 #ifdef USE_5005THREADS
122 /* New() needs interpreter, so call malloc() instead */
123 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
126 Zero(my_perl, 1, PerlInterpreter);
129 #endif /* PERL_IMPLICIT_SYS */
132 =for apidoc perl_construct
134 Initializes a new Perl interpreter. See L<perlembed>.
140 perl_construct(pTHXx)
142 #ifdef USE_5005THREADS
144 struct perl_thread *thr = NULL;
145 #endif /* FAKE_THREADS */
146 #endif /* USE_5005THREADS */
150 PL_perl_destruct_level = 1;
152 if (PL_perl_destruct_level > 0)
156 /* Init the real globals (and main thread)? */
158 #ifdef USE_5005THREADS
159 MUTEX_INIT(&PL_sv_mutex);
161 * Safe to use basic SV functions from now on (though
162 * not things like mortals or tainting yet).
164 MUTEX_INIT(&PL_eval_mutex);
165 COND_INIT(&PL_eval_cond);
166 MUTEX_INIT(&PL_threads_mutex);
167 COND_INIT(&PL_nthreads_cond);
168 # ifdef EMULATE_ATOMIC_REFCOUNTS
169 MUTEX_INIT(&PL_svref_mutex);
170 # endif /* EMULATE_ATOMIC_REFCOUNTS */
172 MUTEX_INIT(&PL_cred_mutex);
173 MUTEX_INIT(&PL_sv_lock_mutex);
174 MUTEX_INIT(&PL_fdpid_mutex);
176 thr = init_main_thread();
177 #endif /* USE_5005THREADS */
179 #ifdef PERL_FLEXIBLE_EXCEPTIONS
180 PL_protect = MEMBER_TO_FPTR(Perl_default_protect); /* for exceptions */
183 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
185 PL_linestr = NEWSV(65,79);
186 sv_upgrade(PL_linestr,SVt_PVIV);
188 if (!SvREADONLY(&PL_sv_undef)) {
189 /* set read-only and try to insure than we wont see REFCNT==0
192 SvREADONLY_on(&PL_sv_undef);
193 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
195 sv_setpv(&PL_sv_no,PL_No);
197 SvREADONLY_on(&PL_sv_no);
198 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
200 sv_setpv(&PL_sv_yes,PL_Yes);
202 SvREADONLY_on(&PL_sv_yes);
203 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
206 PL_sighandlerp = Perl_sighandler;
207 PL_pidstatus = newHV();
210 PL_rs = newSVpvn("\n", 1);
215 PL_lex_state = LEX_NOTPARSING;
221 SET_NUMERIC_STANDARD();
225 PL_patchlevel = NEWSV(0,4);
226 (void)SvUPGRADE(PL_patchlevel, SVt_PVNV);
227 if (PERL_REVISION > 127 || PERL_VERSION > 127 || PERL_SUBVERSION > 127)
228 SvGROW(PL_patchlevel, UTF8_MAXLEN*3+1);
229 s = (U8*)SvPVX(PL_patchlevel);
230 /* Build version strings using "native" characters */
231 s = uvchr_to_utf8(s, (UV)PERL_REVISION);
232 s = uvchr_to_utf8(s, (UV)PERL_VERSION);
233 s = uvchr_to_utf8(s, (UV)PERL_SUBVERSION);
235 SvCUR_set(PL_patchlevel, s - (U8*)SvPVX(PL_patchlevel));
236 SvPOK_on(PL_patchlevel);
237 SvNVX(PL_patchlevel) = (NV)PERL_REVISION
238 + ((NV)PERL_VERSION / (NV)1000)
239 #if defined(PERL_SUBVERSION) && PERL_SUBVERSION > 0
240 + ((NV)PERL_SUBVERSION / (NV)1000000)
243 SvNOK_on(PL_patchlevel); /* dual valued */
244 SvUTF8_on(PL_patchlevel);
245 SvREADONLY_on(PL_patchlevel);
248 #if defined(LOCAL_PATCH_COUNT)
249 PL_localpatches = local_patches; /* For possible -v */
252 #ifdef HAVE_INTERP_INTERN
256 PerlIO_init(aTHX); /* Hook to IO system */
258 PL_fdpid = newAV(); /* for remembering popen pids by fd */
259 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
260 PL_errors = newSVpvn("",0);
261 sv_setpvn(PERL_DEBUG_PAD(0), "", 0); /* For regex debugging. */
262 sv_setpvn(PERL_DEBUG_PAD(1), "", 0); /* ext/re needs these */
263 sv_setpvn(PERL_DEBUG_PAD(2), "", 0); /* even without DEBUGGING. */
265 PL_regex_padav = newAV();
266 av_push(PL_regex_padav,(SV*)newAV()); /* First entry is an array of empty elements */
267 PL_regex_pad = AvARRAY(PL_regex_padav);
269 #ifdef USE_REENTRANT_API
270 Perl_reentrant_init(aTHX);
273 /* Note that strtab is a rather special HV. Assumptions are made
274 about not iterating on it, and not adding tie magic to it.
275 It is properly deallocated in perl_destruct() */
278 #ifdef USE_5005THREADS
279 MUTEX_INIT(&PL_strtab_mutex);
281 HvSHAREKEYS_off(PL_strtab); /* mandatory */
282 hv_ksplit(PL_strtab, 512);
284 #if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
285 _dyld_lookup_and_bind
286 ("__environ", (unsigned long *) &environ_pointer, NULL);
289 #ifdef USE_ENVIRON_ARRAY
290 PL_origenviron = environ;
297 =for apidoc nothreadhook
299 Stub that provides thread hook for perl_destruct when there are
306 Perl_nothreadhook(pTHX)
312 =for apidoc perl_destruct
314 Shuts down a Perl interpreter. See L<perlembed>.
322 volatile int destruct_level; /* 0=none, 1=full, 2=full with checks */
324 #ifdef USE_5005THREADS
327 #endif /* USE_5005THREADS */
329 /* wait for all pseudo-forked children to finish */
330 PERL_WAIT_FOR_CHILDREN;
332 #ifdef USE_5005THREADS
334 /* Pass 1 on any remaining threads: detach joinables, join zombies */
336 MUTEX_LOCK(&PL_threads_mutex);
337 DEBUG_S(PerlIO_printf(Perl_debug_log,
338 "perl_destruct: waiting for %d threads...\n",
340 for (t = thr->next; t != thr; t = t->next) {
341 MUTEX_LOCK(&t->mutex);
342 switch (ThrSTATE(t)) {
345 DEBUG_S(PerlIO_printf(Perl_debug_log,
346 "perl_destruct: joining zombie %p\n", t));
347 ThrSETSTATE(t, THRf_DEAD);
348 MUTEX_UNLOCK(&t->mutex);
351 * The SvREFCNT_dec below may take a long time (e.g. av
352 * may contain an object scalar whose destructor gets
353 * called) so we have to unlock threads_mutex and start
356 MUTEX_UNLOCK(&PL_threads_mutex);
358 SvREFCNT_dec((SV*)av);
359 DEBUG_S(PerlIO_printf(Perl_debug_log,
360 "perl_destruct: joined zombie %p OK\n", t));
362 case THRf_R_JOINABLE:
363 DEBUG_S(PerlIO_printf(Perl_debug_log,
364 "perl_destruct: detaching thread %p\n", t));
365 ThrSETSTATE(t, THRf_R_DETACHED);
367 * We unlock threads_mutex and t->mutex in the opposite order
368 * from which we locked them just so that DETACH won't
369 * deadlock if it panics. It's only a breach of good style
370 * not a bug since they are unlocks not locks.
372 MUTEX_UNLOCK(&PL_threads_mutex);
374 MUTEX_UNLOCK(&t->mutex);
377 DEBUG_S(PerlIO_printf(Perl_debug_log,
378 "perl_destruct: ignoring %p (state %u)\n",
380 MUTEX_UNLOCK(&t->mutex);
381 /* fall through and out */
384 /* We leave the above "Pass 1" loop with threads_mutex still locked */
386 /* Pass 2 on remaining threads: wait for the thread count to drop to one */
387 while (PL_nthreads > 1)
389 DEBUG_S(PerlIO_printf(Perl_debug_log,
390 "perl_destruct: final wait for %d threads\n",
392 COND_WAIT(&PL_nthreads_cond, &PL_threads_mutex);
394 /* At this point, we're the last thread */
395 MUTEX_UNLOCK(&PL_threads_mutex);
396 DEBUG_S(PerlIO_printf(Perl_debug_log, "perl_destruct: armageddon has arrived\n"));
397 MUTEX_DESTROY(&PL_threads_mutex);
398 COND_DESTROY(&PL_nthreads_cond);
400 #endif /* !defined(FAKE_THREADS) */
401 #endif /* USE_5005THREADS */
403 destruct_level = PL_perl_destruct_level;
407 if ((s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL"))) {
409 if (destruct_level < i)
416 if(PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
421 if (PL_endav && !PL_minus_c)
422 call_list(PL_scopestack_ix, PL_endav);
428 if (CALL_FPTR(PL_threadhook)(aTHX)) {
429 /* Threads hook has vetoed further cleanup */
430 return STATUS_NATIVE_EXPORT;;
433 /* We must account for everything. */
435 /* Destroy the main CV and syntax tree */
437 PL_curpad = AvARRAY(PL_comppad);
438 op_free(PL_main_root);
439 PL_main_root = Nullop;
441 PL_curcop = &PL_compiling;
442 PL_main_start = Nullop;
443 SvREFCNT_dec(PL_main_cv);
447 /* Tell PerlIO we are about to tear things apart in case
448 we have layers which are using resources that should
452 PerlIO_destruct(aTHX);
454 if (PL_sv_objcount) {
456 * Try to destruct global references. We do this first so that the
457 * destructors and destructees still exist. Some sv's might remain.
458 * Non-referenced objects are on their own.
463 /* unhook hooks which will soon be, or use, destroyed data */
464 SvREFCNT_dec(PL_warnhook);
465 PL_warnhook = Nullsv;
466 SvREFCNT_dec(PL_diehook);
469 /* call exit list functions */
470 while (PL_exitlistlen-- > 0)
471 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
473 Safefree(PL_exitlist);
475 if (destruct_level == 0){
477 DEBUG_P(debprofdump());
479 #if defined(PERLIO_LAYERS)
480 /* No more IO - including error messages ! */
481 PerlIO_cleanup(aTHX);
484 /* The exit() function will do everything that needs doing. */
485 return STATUS_NATIVE_EXPORT;;
488 /* jettison our possibly duplicated environment */
489 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
490 * so we certainly shouldn't free it here
492 #if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
493 if (environ != PL_origenviron) {
496 for (i = 0; environ[i]; i++)
497 safesysfree(environ[i]);
499 /* Must use safesysfree() when working with environ. */
500 safesysfree(environ);
502 environ = PL_origenviron;
507 /* the syntax tree is shared between clones
508 * so op_free(PL_main_root) only ReREFCNT_dec's
509 * REGEXPs in the parent interpreter
510 * we need to manually ReREFCNT_dec for the clones
513 I32 i = AvFILLp(PL_regex_padav) + 1;
514 SV **ary = AvARRAY(PL_regex_padav);
518 REGEXP *re = INT2PTR(REGEXP *,SvIVX(resv));
520 if (SvFLAGS(resv) & SVf_BREAK) {
521 /* this is PL_reg_curpm, already freed
522 * flag is set in regexec.c:S_regtry
524 SvFLAGS(resv) &= ~SVf_BREAK;
526 else if(SvREPADTMP(resv)) {
527 SvREPADTMP_off(resv);
534 SvREFCNT_dec(PL_regex_padav);
535 PL_regex_padav = Nullav;
539 /* loosen bonds of global variables */
542 (void)PerlIO_close(PL_rsfp);
546 /* Filters for program text */
547 SvREFCNT_dec(PL_rsfp_filters);
548 PL_rsfp_filters = Nullav;
551 PL_preprocess = FALSE;
557 PL_doswitches = FALSE;
558 PL_dowarn = G_WARN_OFF;
559 PL_doextract = FALSE;
560 PL_sawampersand = FALSE; /* must save all match strings */
563 Safefree(PL_inplace);
565 SvREFCNT_dec(PL_patchlevel);
568 SvREFCNT_dec(PL_e_script);
569 PL_e_script = Nullsv;
572 while (--PL_origargc >= 0) {
573 Safefree(PL_origargv[PL_origargc]);
575 Safefree(PL_origargv);
577 /* magical thingies */
579 SvREFCNT_dec(PL_ofs_sv); /* $, */
582 SvREFCNT_dec(PL_ors_sv); /* $\ */
585 SvREFCNT_dec(PL_rs); /* $/ */
588 PL_multiline = 0; /* $* */
589 Safefree(PL_osname); /* $^O */
592 SvREFCNT_dec(PL_statname);
593 PL_statname = Nullsv;
596 /* defgv, aka *_ should be taken care of elsewhere */
598 /* clean up after study() */
599 SvREFCNT_dec(PL_lastscream);
600 PL_lastscream = Nullsv;
601 Safefree(PL_screamfirst);
603 Safefree(PL_screamnext);
607 Safefree(PL_efloatbuf);
608 PL_efloatbuf = Nullch;
611 /* startup and shutdown function lists */
612 SvREFCNT_dec(PL_beginav);
613 SvREFCNT_dec(PL_beginav_save);
614 SvREFCNT_dec(PL_endav);
615 SvREFCNT_dec(PL_checkav);
616 SvREFCNT_dec(PL_initav);
618 PL_beginav_save = Nullav;
623 /* shortcuts just get cleared */
629 PL_argvoutgv = Nullgv;
631 PL_stderrgv = Nullgv;
632 PL_last_in_gv = Nullgv;
634 PL_debstash = Nullhv;
636 /* reset so print() ends up where we expect */
639 SvREFCNT_dec(PL_argvout_stack);
640 PL_argvout_stack = Nullav;
642 SvREFCNT_dec(PL_modglobal);
643 PL_modglobal = Nullhv;
644 SvREFCNT_dec(PL_preambleav);
645 PL_preambleav = Nullav;
646 SvREFCNT_dec(PL_subname);
648 SvREFCNT_dec(PL_linestr);
650 SvREFCNT_dec(PL_pidstatus);
651 PL_pidstatus = Nullhv;
652 SvREFCNT_dec(PL_toptarget);
653 PL_toptarget = Nullsv;
654 SvREFCNT_dec(PL_bodytarget);
655 PL_bodytarget = Nullsv;
656 PL_formtarget = Nullsv;
658 /* free locale stuff */
659 #ifdef USE_LOCALE_COLLATE
660 Safefree(PL_collation_name);
661 PL_collation_name = Nullch;
664 #ifdef USE_LOCALE_NUMERIC
665 Safefree(PL_numeric_name);
666 PL_numeric_name = Nullch;
667 SvREFCNT_dec(PL_numeric_radix_sv);
670 /* clear utf8 character classes */
671 SvREFCNT_dec(PL_utf8_alnum);
672 SvREFCNT_dec(PL_utf8_alnumc);
673 SvREFCNT_dec(PL_utf8_ascii);
674 SvREFCNT_dec(PL_utf8_alpha);
675 SvREFCNT_dec(PL_utf8_space);
676 SvREFCNT_dec(PL_utf8_cntrl);
677 SvREFCNT_dec(PL_utf8_graph);
678 SvREFCNT_dec(PL_utf8_digit);
679 SvREFCNT_dec(PL_utf8_upper);
680 SvREFCNT_dec(PL_utf8_lower);
681 SvREFCNT_dec(PL_utf8_print);
682 SvREFCNT_dec(PL_utf8_punct);
683 SvREFCNT_dec(PL_utf8_xdigit);
684 SvREFCNT_dec(PL_utf8_mark);
685 SvREFCNT_dec(PL_utf8_toupper);
686 SvREFCNT_dec(PL_utf8_totitle);
687 SvREFCNT_dec(PL_utf8_tolower);
688 SvREFCNT_dec(PL_utf8_tofold);
689 SvREFCNT_dec(PL_utf8_idstart);
690 SvREFCNT_dec(PL_utf8_idcont);
691 PL_utf8_alnum = Nullsv;
692 PL_utf8_alnumc = Nullsv;
693 PL_utf8_ascii = Nullsv;
694 PL_utf8_alpha = Nullsv;
695 PL_utf8_space = Nullsv;
696 PL_utf8_cntrl = Nullsv;
697 PL_utf8_graph = Nullsv;
698 PL_utf8_digit = Nullsv;
699 PL_utf8_upper = Nullsv;
700 PL_utf8_lower = Nullsv;
701 PL_utf8_print = Nullsv;
702 PL_utf8_punct = Nullsv;
703 PL_utf8_xdigit = Nullsv;
704 PL_utf8_mark = Nullsv;
705 PL_utf8_toupper = Nullsv;
706 PL_utf8_totitle = Nullsv;
707 PL_utf8_tolower = Nullsv;
708 PL_utf8_tofold = Nullsv;
709 PL_utf8_idstart = Nullsv;
710 PL_utf8_idcont = Nullsv;
712 if (!specialWARN(PL_compiling.cop_warnings))
713 SvREFCNT_dec(PL_compiling.cop_warnings);
714 PL_compiling.cop_warnings = Nullsv;
715 if (!specialCopIO(PL_compiling.cop_io))
716 SvREFCNT_dec(PL_compiling.cop_io);
717 PL_compiling.cop_io = Nullsv;
718 CopFILE_free(&PL_compiling);
719 CopSTASH_free(&PL_compiling);
721 /* Prepare to destruct main symbol table. */
726 SvREFCNT_dec(PL_curstname);
727 PL_curstname = Nullsv;
729 /* clear queued errors */
730 SvREFCNT_dec(PL_errors);
734 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
735 if (PL_scopestack_ix != 0)
736 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
737 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
738 (long)PL_scopestack_ix);
739 if (PL_savestack_ix != 0)
740 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
741 "Unbalanced saves: %ld more saves than restores\n",
742 (long)PL_savestack_ix);
743 if (PL_tmps_floor != -1)
744 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
745 (long)PL_tmps_floor + 1);
746 if (cxstack_ix != -1)
747 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
748 (long)cxstack_ix + 1);
751 /* Now absolutely destruct everything, somehow or other, loops or no. */
752 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
753 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
755 /* the 2 is for PL_fdpid and PL_strtab */
756 while (PL_sv_count > 2 && sv_clean_all())
759 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
760 SvFLAGS(PL_fdpid) |= SVt_PVAV;
761 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
762 SvFLAGS(PL_strtab) |= SVt_PVHV;
764 AvREAL_off(PL_fdpid); /* no surviving entries */
765 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
768 #ifdef HAVE_INTERP_INTERN
772 /* Destruct the global string table. */
774 /* Yell and reset the HeVAL() slots that are still holding refcounts,
775 * so that sv_free() won't fail on them.
783 max = HvMAX(PL_strtab);
784 array = HvARRAY(PL_strtab);
787 if (hent && ckWARN_d(WARN_INTERNAL)) {
788 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
789 "Unbalanced string table refcount: (%d) for \"%s\"",
790 HeVAL(hent) - Nullsv, HeKEY(hent));
791 HeVAL(hent) = Nullsv;
801 SvREFCNT_dec(PL_strtab);
804 /* free the pointer table used for cloning */
805 ptr_table_free(PL_ptr_table);
808 /* free special SVs */
810 SvREFCNT(&PL_sv_yes) = 0;
811 sv_clear(&PL_sv_yes);
812 SvANY(&PL_sv_yes) = NULL;
813 SvFLAGS(&PL_sv_yes) = 0;
815 SvREFCNT(&PL_sv_no) = 0;
817 SvANY(&PL_sv_no) = NULL;
818 SvFLAGS(&PL_sv_no) = 0;
820 SvREFCNT(&PL_sv_undef) = 0;
821 SvREADONLY_off(&PL_sv_undef);
823 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
824 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
826 #if defined(PERLIO_LAYERS)
827 /* No more IO - including error messages ! */
828 PerlIO_cleanup(aTHX);
831 Safefree(PL_origfilename);
832 Safefree(PL_reg_start_tmp);
834 Safefree(PL_reg_curpm);
835 Safefree(PL_reg_poscache);
836 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
837 Safefree(PL_op_mask);
838 Safefree(PL_psig_ptr);
839 Safefree(PL_psig_name);
840 Safefree(PL_bitcount);
841 Safefree(PL_psig_pend);
843 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
845 DEBUG_P(debprofdump());
846 #ifdef USE_5005THREADS
847 MUTEX_DESTROY(&PL_strtab_mutex);
848 MUTEX_DESTROY(&PL_sv_mutex);
849 MUTEX_DESTROY(&PL_eval_mutex);
850 MUTEX_DESTROY(&PL_cred_mutex);
851 MUTEX_DESTROY(&PL_fdpid_mutex);
852 COND_DESTROY(&PL_eval_cond);
853 #ifdef EMULATE_ATOMIC_REFCOUNTS
854 MUTEX_DESTROY(&PL_svref_mutex);
855 #endif /* EMULATE_ATOMIC_REFCOUNTS */
857 /* As the penultimate thing, free the non-arena SV for thrsv */
858 Safefree(SvPVX(PL_thrsv));
859 Safefree(SvANY(PL_thrsv));
862 #endif /* USE_5005THREADS */
864 #ifdef USE_REENTRANT_API
865 Perl_reentrant_free(aTHX);
870 /* As the absolutely last thing, free the non-arena SV for mess() */
873 /* it could have accumulated taint magic */
874 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
877 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
878 moremagic = mg->mg_moremagic;
879 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
881 Safefree(mg->mg_ptr);
885 /* we know that type >= SVt_PV */
886 (void)SvOOK_off(PL_mess_sv);
887 Safefree(SvPVX(PL_mess_sv));
888 Safefree(SvANY(PL_mess_sv));
889 Safefree(PL_mess_sv);
892 return STATUS_NATIVE_EXPORT;
896 =for apidoc perl_free
898 Releases a Perl interpreter. See L<perlembed>.
906 #if defined(WIN32) || defined(NETWARE)
907 # if defined(PERL_IMPLICIT_SYS)
909 void *host = nw_internal_host;
911 void *host = w32_internal_host;
915 nw5_delete_internal_host(host);
917 win32_delete_internal_host(host);
928 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
930 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
931 PL_exitlist[PL_exitlistlen].fn = fn;
932 PL_exitlist[PL_exitlistlen].ptr = ptr;
937 =for apidoc perl_parse
939 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
945 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
950 #ifdef USE_5005THREADS
954 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
957 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
958 setuid perl scripts securely.\n");
964 /* we copy rather than point to argv
965 * since perl_clone will copy and perl_destruct
966 * has no way of knowing if we've made a copy or
970 New(0, PL_origargv, i+1, char*);
971 PL_origargv[i] = '\0';
973 PL_origargv[i] = savepv(argv[i]);
981 /* Come here if running an undumped a.out. */
983 PL_origfilename = savepv(argv[0]);
984 PL_do_undump = FALSE;
985 cxstack_ix = -1; /* start label stack again */
987 init_postdump_symbols(argc,argv,env);
992 PL_curpad = AvARRAY(PL_comppad);
993 op_free(PL_main_root);
994 PL_main_root = Nullop;
996 PL_main_start = Nullop;
997 SvREFCNT_dec(PL_main_cv);
1001 oldscope = PL_scopestack_ix;
1002 PL_dowarn = G_WARN_OFF;
1004 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1005 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
1011 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1012 parse_body(env,xsinit);
1015 call_list(oldscope, PL_checkav);
1022 /* my_exit() was called */
1023 while (PL_scopestack_ix > oldscope)
1026 PL_curstash = PL_defstash;
1028 call_list(oldscope, PL_checkav);
1029 ret = STATUS_NATIVE_EXPORT;
1032 PerlIO_printf(Perl_error_log, "panic: top_env\n");
1040 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1042 S_vparse_body(pTHX_ va_list args)
1044 char **env = va_arg(args, char**);
1045 XSINIT_t xsinit = va_arg(args, XSINIT_t);
1047 return parse_body(env, xsinit);
1052 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
1054 int argc = PL_origargc;
1055 char **argv = PL_origargv;
1056 char *scriptname = NULL;
1058 VOL bool dosearch = FALSE;
1059 char *validarg = "";
1063 char *cddir = Nullch;
1065 sv_setpvn(PL_linestr,"",0);
1066 sv = newSVpvn("",0); /* first used for -I flags */
1070 for (argc--,argv++; argc > 0; argc--,argv++) {
1071 if (argv[0][0] != '-' || !argv[0][1])
1075 validarg = " PHOOEY ";
1084 win32_argv2utf8(argc-1, argv+1);
1087 #ifndef PERL_STRICT_CR
1111 if ((s = moreswitches(s)))
1116 if( !PL_tainting ) {
1117 PL_taint_warn = TRUE;
1124 PL_taint_warn = FALSE;
1129 #ifdef MACOS_TRADITIONAL
1130 /* ignore -e for Dev:Pseudo argument */
1131 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
1134 if (PL_euid != PL_uid || PL_egid != PL_gid)
1135 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
1137 PL_e_script = newSVpvn("",0);
1138 filter_add(read_e_script, NULL);
1141 sv_catpv(PL_e_script, s);
1143 sv_catpv(PL_e_script, argv[1]);
1147 Perl_croak(aTHX_ "No code specified for -e");
1148 sv_catpv(PL_e_script, "\n");
1151 case 'I': /* -I handled both here and in moreswitches() */
1153 if (!*++s && (s=argv[1]) != Nullch) {
1158 STRLEN len = strlen(s);
1159 p = savepvn(s, len);
1160 incpush(p, TRUE, TRUE);
1161 sv_catpvn(sv, "-I", 2);
1162 sv_catpvn(sv, p, len);
1163 sv_catpvn(sv, " ", 1);
1167 Perl_croak(aTHX_ "No directory specified for -I");
1171 PL_preprocess = TRUE;
1181 PL_preambleav = newAV();
1182 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
1184 PL_Sv = newSVpv("print myconfig();",0);
1186 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
1188 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
1190 sv_catpv(PL_Sv,"\" Compile-time options:");
1192 sv_catpv(PL_Sv," DEBUGGING");
1194 # ifdef MULTIPLICITY
1195 sv_catpv(PL_Sv," MULTIPLICITY");
1197 # ifdef USE_5005THREADS
1198 sv_catpv(PL_Sv," USE_5005THREADS");
1200 # ifdef USE_ITHREADS
1201 sv_catpv(PL_Sv," USE_ITHREADS");
1203 # ifdef USE_64_BIT_INT
1204 sv_catpv(PL_Sv," USE_64_BIT_INT");
1206 # ifdef USE_64_BIT_ALL
1207 sv_catpv(PL_Sv," USE_64_BIT_ALL");
1209 # ifdef USE_LONG_DOUBLE
1210 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1212 # ifdef USE_LARGE_FILES
1213 sv_catpv(PL_Sv," USE_LARGE_FILES");
1216 sv_catpv(PL_Sv," USE_SOCKS");
1218 # ifdef PERL_IMPLICIT_CONTEXT
1219 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1221 # ifdef PERL_IMPLICIT_SYS
1222 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1224 sv_catpv(PL_Sv,"\\n\",");
1226 #if defined(LOCAL_PATCH_COUNT)
1227 if (LOCAL_PATCH_COUNT > 0) {
1229 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
1230 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1231 if (PL_localpatches[i])
1232 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
1236 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
1239 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
1241 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
1244 sv_catpv(PL_Sv, "; \
1246 @env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; ");
1249 push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
1252 print \" \\%ENV:\\n @env\\n\" if @env; \
1253 print \" \\@INC:\\n @INC\\n\";");
1256 PL_Sv = newSVpv("config_vars(qw(",0);
1257 sv_catpv(PL_Sv, ++s);
1258 sv_catpv(PL_Sv, "))");
1261 av_push(PL_preambleav, PL_Sv);
1262 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1265 PL_doextract = TRUE;
1273 if (!*++s || isSPACE(*s)) {
1277 /* catch use of gnu style long options */
1278 if (strEQ(s, "version")) {
1282 if (strEQ(s, "help")) {
1289 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1295 #ifndef SECURE_INTERNAL_GETENV
1298 (s = PerlEnv_getenv("PERL5OPT")))
1303 if (*s == '-' && *(s+1) == 'T') {
1305 PL_taint_warn = FALSE;
1308 char *popt_copy = Nullch;
1321 if (!strchr("DIMUdmtw", *s))
1322 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
1326 popt_copy = SvPVX(sv_2mortal(newSVpv(popt,0)));
1327 s = popt_copy + (s - popt);
1328 d = popt_copy + (d - popt);
1335 if( !PL_tainting ) {
1336 PL_taint_warn = TRUE;
1346 if (PL_taint_warn && PL_dowarn != G_WARN_ALL_OFF) {
1347 PL_compiling.cop_warnings = newSVpvn(WARN_TAINTstring, WARNsize);
1351 scriptname = argv[0];
1354 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1356 else if (scriptname == Nullch) {
1358 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1366 open_script(scriptname,dosearch,sv,&fdscript);
1368 validate_suid(validarg, scriptname,fdscript);
1371 #if defined(SIGCHLD) || defined(SIGCLD)
1374 # define SIGCHLD SIGCLD
1376 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1377 if (sigstate == SIG_IGN) {
1378 if (ckWARN(WARN_SIGNAL))
1379 Perl_warner(aTHX_ packWARN(WARN_SIGNAL),
1380 "Can't ignore signal CHLD, forcing to default");
1381 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1387 #ifdef MACOS_TRADITIONAL
1388 if (PL_doextract || gMacPerl_AlwaysExtract) {
1393 if (cddir && PerlDir_chdir(cddir) < 0)
1394 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1398 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1399 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1400 CvUNIQUE_on(PL_compcv);
1402 PL_comppad = newAV();
1403 av_push(PL_comppad, Nullsv);
1404 PL_curpad = AvARRAY(PL_comppad);
1405 PL_comppad_name = newAV();
1406 PL_comppad_name_fill = 0;
1407 PL_min_intro_pending = 0;
1409 #ifdef USE_5005THREADS
1410 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
1411 PL_curpad[0] = (SV*)newAV();
1412 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1413 CvOWNER(PL_compcv) = 0;
1414 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1415 MUTEX_INIT(CvMUTEXP(PL_compcv));
1416 #endif /* USE_5005THREADS */
1418 comppadlist = newAV();
1419 AvREAL_off(comppadlist);
1420 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1421 av_store(comppadlist, 1, (SV*)PL_comppad);
1422 CvPADLIST(PL_compcv) = comppadlist;
1425 boot_core_UNIVERSAL();
1427 boot_core_xsutils();
1431 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
1433 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
1439 # ifdef HAS_SOCKS5_INIT
1440 socks5_init(argv[0]);
1446 init_predump_symbols();
1447 /* init_postdump_symbols not currently designed to be called */
1448 /* more than once (ENV isn't cleared first, for example) */
1449 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
1451 init_postdump_symbols(argc,argv,env);
1453 if (PL_wantutf8) { /* Requires init_predump_symbols(). */
1457 if (PL_stdingv && (io = GvIO(PL_stdingv)) && (fp = IoIFP(io)))
1458 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
1459 if (PL_defoutgv && (io = GvIO(PL_defoutgv)) && (fp = IoOFP(io)))
1460 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
1461 if (PL_stderrgv && (io = GvIO(PL_stderrgv)) && (fp = IoOFP(io)))
1462 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
1463 if ((sv = GvSV(gv_fetchpv("\017PEN", TRUE, SVt_PV)))) {
1464 sv_setpvn(sv, ":utf8\0:utf8", 11);
1471 /* now parse the script */
1473 SETERRNO(0,SS$_NORMAL);
1475 #ifdef MACOS_TRADITIONAL
1476 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1478 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1480 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1481 MacPerl_MPWFileName(PL_origfilename));
1485 if (yyparse() || PL_error_count) {
1487 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
1489 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1494 CopLINE_set(PL_curcop, 0);
1495 PL_curstash = PL_defstash;
1496 PL_preprocess = FALSE;
1498 SvREFCNT_dec(PL_e_script);
1499 PL_e_script = Nullsv;
1503 Not sure that this is still the right place to do this now that we
1504 no longer use PL_nrs. HVDS 2001/09/09
1506 sv_setsv(get_sv("/", TRUE), PL_rs);
1512 SAVECOPFILE(PL_curcop);
1513 SAVECOPLINE(PL_curcop);
1514 gv_check(PL_defstash);
1521 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1522 dump_mstats("after compilation:");
1531 =for apidoc perl_run
1533 Tells a Perl interpreter to run. See L<perlembed>.
1544 #ifdef USE_5005THREADS
1548 oldscope = PL_scopestack_ix;
1553 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1555 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1561 cxstack_ix = -1; /* start context stack again */
1563 case 0: /* normal completion */
1564 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1569 case 2: /* my_exit() */
1570 while (PL_scopestack_ix > oldscope)
1573 PL_curstash = PL_defstash;
1574 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
1575 PL_endav && !PL_minus_c)
1576 call_list(oldscope, PL_endav);
1578 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1579 dump_mstats("after execution: ");
1581 ret = STATUS_NATIVE_EXPORT;
1585 POPSTACK_TO(PL_mainstack);
1588 PerlIO_printf(Perl_error_log, "panic: restartop\n");
1598 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1600 S_vrun_body(pTHX_ va_list args)
1602 I32 oldscope = va_arg(args, I32);
1604 return run_body(oldscope);
1610 S_run_body(pTHX_ I32 oldscope)
1612 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
1613 PL_sawampersand ? "Enabling" : "Omitting"));
1615 if (!PL_restartop) {
1616 DEBUG_x(dump_all());
1617 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
1618 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1622 #ifdef MACOS_TRADITIONAL
1623 PerlIO_printf(Perl_error_log, "# %s syntax OK\n", MacPerl_MPWFileName(PL_origfilename));
1625 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
1629 if (PERLDB_SINGLE && PL_DBsingle)
1630 sv_setiv(PL_DBsingle, 1);
1632 call_list(oldscope, PL_initav);
1638 PL_op = PL_restartop;
1642 else if (PL_main_start) {
1643 CvDEPTH(PL_main_cv) = 1;
1644 PL_op = PL_main_start;
1654 =head1 SV Manipulation Functions
1656 =for apidoc p||get_sv
1658 Returns the SV of the specified Perl scalar. If C<create> is set and the
1659 Perl variable does not exist then it will be created. If C<create> is not
1660 set and the variable does not exist then NULL is returned.
1666 Perl_get_sv(pTHX_ const char *name, I32 create)
1669 #ifdef USE_5005THREADS
1670 if (name[1] == '\0' && !isALPHA(name[0])) {
1671 PADOFFSET tmp = find_threadsv(name);
1672 if (tmp != NOT_IN_PAD)
1673 return THREADSV(tmp);
1675 #endif /* USE_5005THREADS */
1676 gv = gv_fetchpv(name, create, SVt_PV);
1683 =head1 Array Manipulation Functions
1685 =for apidoc p||get_av
1687 Returns the AV of the specified Perl array. If C<create> is set and the
1688 Perl variable does not exist then it will be created. If C<create> is not
1689 set and the variable does not exist then NULL is returned.
1695 Perl_get_av(pTHX_ const char *name, I32 create)
1697 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1706 =head1 Hash Manipulation Functions
1708 =for apidoc p||get_hv
1710 Returns the HV of the specified Perl hash. If C<create> is set and the
1711 Perl variable does not exist then it will be created. If C<create> is not
1712 set and the variable does not exist then NULL is returned.
1718 Perl_get_hv(pTHX_ const char *name, I32 create)
1720 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1729 =head1 CV Manipulation Functions
1731 =for apidoc p||get_cv
1733 Returns the CV of the specified Perl subroutine. If C<create> is set and
1734 the Perl subroutine does not exist then it will be declared (which has the
1735 same effect as saying C<sub name;>). If C<create> is not set and the
1736 subroutine does not exist then NULL is returned.
1742 Perl_get_cv(pTHX_ const char *name, I32 create)
1744 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
1745 /* XXX unsafe for threads if eval_owner isn't held */
1746 /* XXX this is probably not what they think they're getting.
1747 * It has the same effect as "sub name;", i.e. just a forward
1749 if (create && !GvCVu(gv))
1750 return newSUB(start_subparse(FALSE, 0),
1751 newSVOP(OP_CONST, 0, newSVpv(name,0)),
1759 /* Be sure to refetch the stack pointer after calling these routines. */
1763 =head1 Callback Functions
1765 =for apidoc p||call_argv
1767 Performs a callback to the specified Perl sub. See L<perlcall>.
1773 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
1775 /* See G_* flags in cop.h */
1776 /* null terminated arg list */
1783 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
1788 return call_pv(sub_name, flags);
1792 =for apidoc p||call_pv
1794 Performs a callback to the specified Perl sub. See L<perlcall>.
1800 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
1801 /* name of the subroutine */
1802 /* See G_* flags in cop.h */
1804 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
1808 =for apidoc p||call_method
1810 Performs a callback to the specified Perl method. The blessed object must
1811 be on the stack. See L<perlcall>.
1817 Perl_call_method(pTHX_ const char *methname, I32 flags)
1818 /* name of the subroutine */
1819 /* See G_* flags in cop.h */
1821 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
1824 /* May be called with any of a CV, a GV, or an SV containing the name. */
1826 =for apidoc p||call_sv
1828 Performs a callback to the Perl sub whose name is in the SV. See
1835 Perl_call_sv(pTHX_ SV *sv, I32 flags)
1836 /* See G_* flags in cop.h */
1839 LOGOP myop; /* fake syntax tree node */
1842 volatile I32 retval = 0;
1844 bool oldcatch = CATCH_GET;
1849 if (flags & G_DISCARD) {
1854 Zero(&myop, 1, LOGOP);
1855 myop.op_next = Nullop;
1856 if (!(flags & G_NOARGS))
1857 myop.op_flags |= OPf_STACKED;
1858 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1859 (flags & G_ARRAY) ? OPf_WANT_LIST :
1864 EXTEND(PL_stack_sp, 1);
1865 *++PL_stack_sp = sv;
1867 oldscope = PL_scopestack_ix;
1869 if (PERLDB_SUB && PL_curstash != PL_debstash
1870 /* Handle first BEGIN of -d. */
1871 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
1872 /* Try harder, since this may have been a sighandler, thus
1873 * curstash may be meaningless. */
1874 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
1875 && !(flags & G_NODEBUG))
1876 PL_op->op_private |= OPpENTERSUB_DB;
1878 if (flags & G_METHOD) {
1879 Zero(&method_op, 1, UNOP);
1880 method_op.op_next = PL_op;
1881 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1882 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
1883 PL_op = (OP*)&method_op;
1886 if (!(flags & G_EVAL)) {
1888 call_body((OP*)&myop, FALSE);
1889 retval = PL_stack_sp - (PL_stack_base + oldmark);
1890 CATCH_SET(oldcatch);
1893 myop.op_other = (OP*)&myop;
1895 /* we're trying to emulate pp_entertry() here */
1897 register PERL_CONTEXT *cx;
1898 I32 gimme = GIMME_V;
1903 push_return(Nullop);
1904 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
1906 PL_eval_root = PL_op; /* Only needed so that goto works right. */
1908 PL_in_eval = EVAL_INEVAL;
1909 if (flags & G_KEEPERR)
1910 PL_in_eval |= EVAL_KEEPERR;
1916 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1918 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1925 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1927 call_body((OP*)&myop, FALSE);
1929 retval = PL_stack_sp - (PL_stack_base + oldmark);
1930 if (!(flags & G_KEEPERR))
1937 /* my_exit() was called */
1938 PL_curstash = PL_defstash;
1941 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1942 Perl_croak(aTHX_ "Callback called exit");
1947 PL_op = PL_restartop;
1951 PL_stack_sp = PL_stack_base + oldmark;
1952 if (flags & G_ARRAY)
1956 *++PL_stack_sp = &PL_sv_undef;
1961 if (PL_scopestack_ix > oldscope) {
1965 register PERL_CONTEXT *cx;
1977 if (flags & G_DISCARD) {
1978 PL_stack_sp = PL_stack_base + oldmark;
1987 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1989 S_vcall_body(pTHX_ va_list args)
1991 OP *myop = va_arg(args, OP*);
1992 int is_eval = va_arg(args, int);
1994 call_body(myop, is_eval);
2000 S_call_body(pTHX_ OP *myop, int is_eval)
2002 if (PL_op == myop) {
2004 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
2006 PL_op = Perl_pp_entersub(aTHX); /* this does */
2012 /* Eval a string. The G_EVAL flag is always assumed. */
2015 =for apidoc p||eval_sv
2017 Tells Perl to C<eval> the string in the SV.
2023 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
2025 /* See G_* flags in cop.h */
2028 UNOP myop; /* fake syntax tree node */
2029 volatile I32 oldmark = SP - PL_stack_base;
2030 volatile I32 retval = 0;
2036 if (flags & G_DISCARD) {
2043 Zero(PL_op, 1, UNOP);
2044 EXTEND(PL_stack_sp, 1);
2045 *++PL_stack_sp = sv;
2046 oldscope = PL_scopestack_ix;
2048 if (!(flags & G_NOARGS))
2049 myop.op_flags = OPf_STACKED;
2050 myop.op_next = Nullop;
2051 myop.op_type = OP_ENTEREVAL;
2052 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
2053 (flags & G_ARRAY) ? OPf_WANT_LIST :
2055 if (flags & G_KEEPERR)
2056 myop.op_flags |= OPf_SPECIAL;
2058 #ifdef PERL_FLEXIBLE_EXCEPTIONS
2060 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
2067 #ifndef PERL_FLEXIBLE_EXCEPTIONS
2069 call_body((OP*)&myop,TRUE);
2071 retval = PL_stack_sp - (PL_stack_base + oldmark);
2072 if (!(flags & G_KEEPERR))
2079 /* my_exit() was called */
2080 PL_curstash = PL_defstash;
2083 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
2084 Perl_croak(aTHX_ "Callback called exit");
2089 PL_op = PL_restartop;
2093 PL_stack_sp = PL_stack_base + oldmark;
2094 if (flags & G_ARRAY)
2098 *++PL_stack_sp = &PL_sv_undef;
2104 if (flags & G_DISCARD) {
2105 PL_stack_sp = PL_stack_base + oldmark;
2115 =for apidoc p||eval_pv
2117 Tells Perl to C<eval> the given string and return an SV* result.
2123 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
2126 SV* sv = newSVpv(p, 0);
2128 eval_sv(sv, G_SCALAR);
2135 if (croak_on_error && SvTRUE(ERRSV)) {
2137 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
2143 /* Require a module. */
2146 =head1 Embedding Functions
2148 =for apidoc p||require_pv
2150 Tells Perl to C<require> the file named by the string argument. It is
2151 analogous to the Perl code C<eval "require '$file'">. It's even
2152 implemented that way; consider using Perl_load_module instead.
2157 Perl_require_pv(pTHX_ const char *pv)
2161 PUSHSTACKi(PERLSI_REQUIRE);
2163 sv = sv_newmortal();
2164 sv_setpv(sv, "require '");
2167 eval_sv(sv, G_DISCARD);
2173 Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
2177 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
2178 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
2182 S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
2184 /* This message really ought to be max 23 lines.
2185 * Removed -h because the user already knows that option. Others? */
2187 static char *usage_msg[] = {
2188 "-0[octal] specify record separator (\\0, if no argument)",
2189 "-a autosplit mode with -n or -p (splits $_ into @F)",
2190 "-C enable native wide character system interfaces",
2191 "-c check syntax only (runs BEGIN and CHECK blocks)",
2192 "-d[:debugger] run program under debugger",
2193 "-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2194 "-e 'command' one line of program (several -e's allowed, omit programfile)",
2195 "-F/pattern/ split() pattern for -a switch (//'s are optional)",
2196 "-i[extension] edit <> files in place (makes backup if extension supplied)",
2197 "-Idirectory specify @INC/#include directory (several -I's allowed)",
2198 "-l[octal] enable line ending processing, specifies line terminator",
2199 "-[mM][-]module execute `use/no module...' before executing program",
2200 "-n assume 'while (<>) { ... }' loop around program",
2201 "-p assume loop like -n but print line also, like sed",
2202 "-P run program through C preprocessor before compilation",
2203 "-s enable rudimentary parsing for switches after programfile",
2204 "-S look for programfile using PATH environment variable",
2205 "-T enable tainting checks",
2206 "-t enable tainting warnings",
2207 "-u dump core after parsing program",
2208 "-U allow unsafe operations",
2209 "-v print version, subversion (includes VERY IMPORTANT perl info)",
2210 "-V[:variable] print configuration summary (or a single Config.pm variable)",
2211 "-w enable many useful warnings (RECOMMENDED)",
2212 "-W enable all warnings",
2213 "-X disable all warnings",
2214 "-x[directory] strip off text before #!perl line and perhaps cd to directory",
2218 char **p = usage_msg;
2220 PerlIO_printf(PerlIO_stdout(),
2221 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2224 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
2227 /* This routine handles any switches that can be given during run */
2230 Perl_moreswitches(pTHX_ char *s)
2240 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
2241 SvREFCNT_dec(PL_rs);
2242 if (rschar & ~((U8)~0))
2243 PL_rs = &PL_sv_undef;
2244 else if (!rschar && numlen >= 2)
2245 PL_rs = newSVpvn("", 0);
2248 PL_rs = newSVpvn(&ch, 1);
2253 PL_widesyscalls = TRUE;
2259 while (*s && !isSPACE(*s)) ++s;
2261 PL_splitstr = savepv(PL_splitstr);
2274 /* The following permits -d:Mod to accepts arguments following an =
2275 in the fashion that -MSome::Mod does. */
2276 if (*s == ':' || *s == '=') {
2279 sv = newSVpv("use Devel::", 0);
2281 /* We now allow -d:Module=Foo,Bar */
2282 while(isALNUM(*s) || *s==':') ++s;
2284 sv_catpv(sv, start);
2286 sv_catpvn(sv, start, s-start);
2287 sv_catpv(sv, " split(/,/,q{");
2292 my_setenv("PERL5DB", SvPV(sv, PL_na));
2295 PL_perldb = PERLDB_ALL;
2303 if (isALPHA(s[1])) {
2304 /* if adding extra options, remember to update DEBUG_MASK */
2305 static char debopts[] = "psltocPmfrxuLHXDSTRJ";
2308 for (s++; *s && (d = strchr(debopts,*s)); s++)
2309 PL_debug |= 1 << (d - debopts);
2312 PL_debug = atoi(s+1);
2313 for (s++; isDIGIT(*s); s++) ;
2316 if (DEBUG_p_TEST_ && ckWARN_d(WARN_DEBUGGING))
2317 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2318 "-Dp not implemented on this platform\n");
2320 PL_debug |= DEBUG_TOP_FLAG;
2321 #else /* !DEBUGGING */
2322 if (ckWARN_d(WARN_DEBUGGING))
2323 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2324 "Recompile perl with -DDEBUGGING to use -D switch\n");
2325 for (s++; isALNUM(*s); s++) ;
2331 usage(PL_origargv[0]);
2335 Safefree(PL_inplace);
2336 PL_inplace = savepv(s+1);
2338 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
2341 if (*s == '-') /* Additional switches on #! line. */
2345 case 'I': /* -I handled both here and in parse_body() */
2348 while (*s && isSPACE(*s))
2353 /* ignore trailing spaces (possibly followed by other switches) */
2355 for (e = p; *e && !isSPACE(*e); e++) ;
2359 } while (*p && *p != '-');
2360 e = savepvn(s, e-s);
2361 incpush(e, TRUE, TRUE);
2368 Perl_croak(aTHX_ "No directory specified for -I");
2374 SvREFCNT_dec(PL_ors_sv);
2379 PL_ors_sv = newSVpvn("\n",1);
2380 numlen = 3 + (*s == '0');
2381 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
2385 if (RsPARA(PL_rs)) {
2386 PL_ors_sv = newSVpvn("\n\n",2);
2389 PL_ors_sv = newSVsv(PL_rs);
2394 forbid_setid("-M"); /* XXX ? */
2397 forbid_setid("-m"); /* XXX ? */
2402 /* -M-foo == 'no foo' */
2403 if (*s == '-') { use = "no "; ++s; }
2404 sv = newSVpv(use,0);
2406 /* We allow -M'Module qw(Foo Bar)' */
2407 while(isALNUM(*s) || *s==':') ++s;
2409 sv_catpv(sv, start);
2410 if (*(start-1) == 'm') {
2412 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
2413 sv_catpv( sv, " ()");
2417 Perl_croak(aTHX_ "Module name required with -%c option",
2419 sv_catpvn(sv, start, s-start);
2420 sv_catpv(sv, " split(/,/,q{");
2426 PL_preambleav = newAV();
2427 av_push(PL_preambleav, sv);
2430 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
2442 PL_doswitches = TRUE;
2447 Perl_croak(aTHX_ "Too late for \"-t\" option");
2452 Perl_croak(aTHX_ "Too late for \"-T\" option");
2456 #ifdef MACOS_TRADITIONAL
2457 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2459 PL_do_undump = TRUE;
2468 PerlIO_printf(PerlIO_stdout(),
2469 Perl_form(aTHX_ "\nThis is perl, v%"VDf" built for %s",
2470 PL_patchlevel, ARCHNAME));
2472 /* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
2473 PerlIO_printf(PerlIO_stdout(),
2474 Perl_form(aTHX_ "\nThis is perl, version %vd\n", PL_patchlevel));
2475 PerlIO_printf(PerlIO_stdout(),
2476 Perl_form(aTHX_ " built under %s at %s %s\n",
2477 OSNAME, __DATE__, __TIME__));
2478 PerlIO_printf(PerlIO_stdout(),
2479 Perl_form(aTHX_ " OS Specific Release: %s\n",
2483 #if defined(LOCAL_PATCH_COUNT)
2484 if (LOCAL_PATCH_COUNT > 0)
2485 PerlIO_printf(PerlIO_stdout(),
2486 "\n(with %d registered patch%s, "
2487 "see perl -V for more detail)",
2488 (int)LOCAL_PATCH_COUNT,
2489 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
2492 PerlIO_printf(PerlIO_stdout(),
2493 "\n\nCopyright 1987-2002, Larry Wall\n");
2494 #ifdef MACOS_TRADITIONAL
2495 PerlIO_printf(PerlIO_stdout(),
2496 "\nMac OS port Copyright 1991-2002, Matthias Neeracher;\n"
2497 "maintained by Chris Nandor\n");
2500 PerlIO_printf(PerlIO_stdout(),
2501 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
2504 PerlIO_printf(PerlIO_stdout(),
2505 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2506 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
2509 PerlIO_printf(PerlIO_stdout(),
2510 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2511 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
2514 PerlIO_printf(PerlIO_stdout(),
2515 "atariST series port, ++jrb bammi@cadence.com\n");
2518 PerlIO_printf(PerlIO_stdout(),
2519 "BeOS port Copyright Tom Spindler, 1997-1999\n");
2522 PerlIO_printf(PerlIO_stdout(),
2523 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2002\n");
2526 PerlIO_printf(PerlIO_stdout(),
2527 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
2530 PerlIO_printf(PerlIO_stdout(),
2531 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
2534 PerlIO_printf(PerlIO_stdout(),
2535 "VM/ESA port by Neale Ferguson, 1998-1999\n");
2538 PerlIO_printf(PerlIO_stdout(),
2539 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
2542 PerlIO_printf(PerlIO_stdout(),
2543 "MiNT port by Guido Flohr, 1997-1999\n");
2546 PerlIO_printf(PerlIO_stdout(),
2547 "EPOC port by Olaf Flebbe, 1999-2002\n");
2550 printf("WINCE port by Rainer Keuchel, 2001-2002\n");
2551 printf("Built on " __DATE__ " " __TIME__ "\n\n");
2554 #ifdef BINARY_BUILD_NOTICE
2555 BINARY_BUILD_NOTICE;
2557 PerlIO_printf(PerlIO_stdout(),
2559 Perl may be copied only under the terms of either the Artistic License or the\n\
2560 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
2561 Complete documentation for Perl, including FAQ lists, should be found on\n\
2562 this system using `man perl' or `perldoc perl'. If you have access to the\n\
2563 Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
2566 if (! (PL_dowarn & G_WARN_ALL_MASK))
2567 PL_dowarn |= G_WARN_ON;
2571 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
2572 if (!specialWARN(PL_compiling.cop_warnings))
2573 SvREFCNT_dec(PL_compiling.cop_warnings);
2574 PL_compiling.cop_warnings = pWARN_ALL ;
2578 PL_dowarn = G_WARN_ALL_OFF;
2579 if (!specialWARN(PL_compiling.cop_warnings))
2580 SvREFCNT_dec(PL_compiling.cop_warnings);
2581 PL_compiling.cop_warnings = pWARN_NONE ;
2586 if (s[1] == '-') /* Additional switches on #! line. */
2591 #if defined(WIN32) || !defined(PERL_STRICT_CR)
2597 #ifdef ALTERNATE_SHEBANG
2598 case 'S': /* OS/2 needs -S on "extproc" line. */
2606 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
2611 /* compliments of Tom Christiansen */
2613 /* unexec() can be found in the Gnu emacs distribution */
2614 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
2617 Perl_my_unexec(pTHX)
2625 prog = newSVpv(BIN_EXP, 0);
2626 sv_catpv(prog, "/perl");
2627 file = newSVpv(PL_origfilename, 0);
2628 sv_catpv(file, ".perldump");
2630 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2631 /* unexec prints msg to stderr in case of failure */
2632 PerlProc_exit(status);
2635 # include <lib$routines.h>
2636 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
2638 ABORT(); /* for use with undump */
2643 /* initialize curinterp */
2649 # define PERLVAR(var,type)
2650 # define PERLVARA(var,n,type)
2651 # if defined(PERL_IMPLICIT_CONTEXT)
2652 # if defined(USE_5005THREADS)
2653 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2654 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2655 # else /* !USE_5005THREADS */
2656 # define PERLVARI(var,type,init) aTHX->var = init;
2657 # define PERLVARIC(var,type,init) aTHX->var = init;
2658 # endif /* USE_5005THREADS */
2660 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2661 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2663 # include "intrpvar.h"
2664 # ifndef USE_5005THREADS
2665 # include "thrdvar.h"
2672 # define PERLVAR(var,type)
2673 # define PERLVARA(var,n,type)
2674 # define PERLVARI(var,type,init) PL_##var = init;
2675 # define PERLVARIC(var,type,init) PL_##var = init;
2676 # include "intrpvar.h"
2677 # ifndef USE_5005THREADS
2678 # include "thrdvar.h"
2689 S_init_main_stash(pTHX)
2693 PL_curstash = PL_defstash = newHV();
2694 PL_curstname = newSVpvn("main",4);
2695 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2696 SvREFCNT_dec(GvHV(gv));
2697 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
2699 HvNAME(PL_defstash) = savepv("main");
2700 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2701 GvMULTI_on(PL_incgv);
2702 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2703 GvMULTI_on(PL_hintgv);
2704 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2705 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2706 GvMULTI_on(PL_errgv);
2707 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2708 GvMULTI_on(PL_replgv);
2709 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
2710 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2711 sv_setpvn(ERRSV, "", 0);
2712 PL_curstash = PL_defstash;
2713 CopSTASH_set(&PL_compiling, PL_defstash);
2714 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
2715 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
2716 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
2717 /* We must init $/ before switches are processed. */
2718 sv_setpvn(get_sv("/", TRUE), "\n", 1);
2722 S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
2726 char *cpp_discard_flag;
2732 PL_origfilename = savepv("-e");
2735 /* if find_script() returns, it returns a malloc()-ed value */
2736 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
2738 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2739 char *s = scriptname + 8;
2740 *fdscript = atoi(s);
2744 scriptname = savepv(s + 1);
2745 Safefree(PL_origfilename);
2746 PL_origfilename = scriptname;
2751 CopFILE_free(PL_curcop);
2752 CopFILE_set(PL_curcop, PL_origfilename);
2753 if (strEQ(PL_origfilename,"-"))
2755 if (*fdscript >= 0) {
2756 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
2757 # if defined(HAS_FCNTL) && defined(F_SETFD)
2759 /* ensure close-on-exec */
2760 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1);
2763 else if (PL_preprocess) {
2764 char *cpp_cfg = CPPSTDIN;
2765 SV *cpp = newSVpvn("",0);
2766 SV *cmd = NEWSV(0,0);
2768 if (strEQ(cpp_cfg, "cppstdin"))
2769 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
2770 sv_catpv(cpp, cpp_cfg);
2773 sv_catpvn(sv, "-I", 2);
2774 sv_catpv(sv,PRIVLIB_EXP);
2777 DEBUG_P(PerlIO_printf(Perl_debug_log,
2778 "PL_preprocess: scriptname=\"%s\", cpp=\"%s\", sv=\"%s\", CPPMINUS=\"%s\"\n",
2779 scriptname, SvPVX (cpp), SvPVX (sv), CPPMINUS));
2781 # if defined(MSDOS) || defined(WIN32) || defined(VMS)
2788 cpp_discard_flag = "";
2790 cpp_discard_flag = "-C";
2794 perl = os2_execname(aTHX);
2796 perl = PL_origargv[0];
2800 /* This strips off Perl comments which might interfere with
2801 the C pre-processor, including #!. #line directives are
2802 deliberately stripped to avoid confusion with Perl's version
2803 of #line. FWP played some golf with it so it will fit
2804 into VMS's 255 character buffer.
2807 code = "(1../^#!.*perl/i)|/^\\s*#(?!\\s*((ifn?|un)def|(el|end)?if|define|include|else|error|pragma)\\b)/||!($|=1)||print";
2809 code = "/^\\s*#(?!\\s*((ifn?|un)def|(el|end)?if|define|include|else|error|pragma)\\b)/||!($|=1)||print";
2811 Perl_sv_setpvf(aTHX_ cmd, "\
2812 %s -ne%s%s%s %s | %"SVf" %s %"SVf" %s",
2813 perl, quote, code, quote, scriptname, cpp,
2814 cpp_discard_flag, sv, CPPMINUS);
2816 PL_doextract = FALSE;
2817 # ifdef IAMSUID /* actually, this is caught earlier */
2818 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
2820 (void)seteuid(PL_uid); /* musn't stay setuid root */
2822 # ifdef HAS_SETREUID
2823 (void)setreuid((Uid_t)-1, PL_uid);
2825 # ifdef HAS_SETRESUID
2826 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
2828 PerlProc_setuid(PL_uid);
2832 if (PerlProc_geteuid() != PL_uid)
2833 Perl_croak(aTHX_ "Can't do seteuid!\n");
2835 # endif /* IAMSUID */
2837 DEBUG_P(PerlIO_printf(Perl_debug_log,
2838 "PL_preprocess: cmd=\"%s\"\n",
2841 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
2845 else if (!*scriptname) {
2846 forbid_setid("program input from stdin");
2847 PL_rsfp = PerlIO_stdin();
2850 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
2851 # if defined(HAS_FCNTL) && defined(F_SETFD)
2853 /* ensure close-on-exec */
2854 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1);
2859 # ifndef IAMSUID /* in case script is not readable before setuid */
2861 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
2862 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2865 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT,
2866 BIN_EXP, (int)PERL_REVISION,
2868 (int)PERL_SUBVERSION), PL_origargv);
2869 Perl_croak(aTHX_ "Can't do setuid\n");
2875 Perl_croak(aTHX_ "Can't open perl script: %s\n",
2878 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
2879 CopFILE(PL_curcop), Strerror(errno));
2885 * I_SYSSTATVFS HAS_FSTATVFS
2887 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
2888 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2889 * here so that metaconfig picks them up. */
2893 S_fd_on_nosuid_fs(pTHX_ int fd)
2895 int check_okay = 0; /* able to do all the required sys/libcalls */
2896 int on_nosuid = 0; /* the fd is on a nosuid fs */
2898 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
2899 * fstatvfs() is UNIX98.
2900 * fstatfs() is 4.3 BSD.
2901 * ustat()+getmnt() is pre-4.3 BSD.
2902 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2903 * an irrelevant filesystem while trying to reach the right one.
2906 #undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2908 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2909 defined(HAS_FSTATVFS)
2910 # define FD_ON_NOSUID_CHECK_OKAY
2911 struct statvfs stfs;
2913 check_okay = fstatvfs(fd, &stfs) == 0;
2914 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
2915 # endif /* fstatvfs */
2917 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2918 defined(PERL_MOUNT_NOSUID) && \
2919 defined(HAS_FSTATFS) && \
2920 defined(HAS_STRUCT_STATFS) && \
2921 defined(HAS_STRUCT_STATFS_F_FLAGS)
2922 # define FD_ON_NOSUID_CHECK_OKAY
2925 check_okay = fstatfs(fd, &stfs) == 0;
2926 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
2927 # endif /* fstatfs */
2929 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2930 defined(PERL_MOUNT_NOSUID) && \
2931 defined(HAS_FSTAT) && \
2932 defined(HAS_USTAT) && \
2933 defined(HAS_GETMNT) && \
2934 defined(HAS_STRUCT_FS_DATA) && \
2936 # define FD_ON_NOSUID_CHECK_OKAY
2939 if (fstat(fd, &fdst) == 0) {
2941 if (ustat(fdst.st_dev, &us) == 0) {
2943 /* NOSTAT_ONE here because we're not examining fields which
2944 * vary between that case and STAT_ONE. */
2945 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
2946 size_t cmplen = sizeof(us.f_fname);
2947 if (sizeof(fsd.fd_req.path) < cmplen)
2948 cmplen = sizeof(fsd.fd_req.path);
2949 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2950 fdst.st_dev == fsd.fd_req.dev) {
2952 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2958 # endif /* fstat+ustat+getmnt */
2960 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2961 defined(HAS_GETMNTENT) && \
2962 defined(HAS_HASMNTOPT) && \
2963 defined(MNTOPT_NOSUID)
2964 # define FD_ON_NOSUID_CHECK_OKAY
2965 FILE *mtab = fopen("/etc/mtab", "r");
2966 struct mntent *entry;
2967 struct stat stb, fsb;
2969 if (mtab && (fstat(fd, &stb) == 0)) {
2970 while (entry = getmntent(mtab)) {
2971 if (stat(entry->mnt_dir, &fsb) == 0
2972 && fsb.st_dev == stb.st_dev)
2974 /* found the filesystem */
2976 if (hasmntopt(entry, MNTOPT_NOSUID))
2979 } /* A single fs may well fail its stat(). */
2984 # endif /* getmntent+hasmntopt */
2987 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
2990 #endif /* IAMSUID */
2993 S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
2999 /* do we need to emulate setuid on scripts? */
3001 /* This code is for those BSD systems that have setuid #! scripts disabled
3002 * in the kernel because of a security problem. Merely defining DOSUID
3003 * in perl will not fix that problem, but if you have disabled setuid
3004 * scripts in the kernel, this will attempt to emulate setuid and setgid
3005 * on scripts that have those now-otherwise-useless bits set. The setuid
3006 * root version must be called suidperl or sperlN.NNN. If regular perl
3007 * discovers that it has opened a setuid script, it calls suidperl with
3008 * the same argv that it had. If suidperl finds that the script it has
3009 * just opened is NOT setuid root, it sets the effective uid back to the
3010 * uid. We don't just make perl setuid root because that loses the
3011 * effective uid we had before invoking perl, if it was different from the
3014 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
3015 * be defined in suidperl only. suidperl must be setuid root. The
3016 * Configure script will set this up for you if you want it.
3022 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
3023 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
3024 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
3029 #ifndef HAS_SETREUID
3030 /* On this access check to make sure the directories are readable,
3031 * there is actually a small window that the user could use to make
3032 * filename point to an accessible directory. So there is a faint
3033 * chance that someone could execute a setuid script down in a
3034 * non-accessible directory. I don't know what to do about that.
3035 * But I don't think it's too important. The manual lies when
3036 * it says access() is useful in setuid programs.
3038 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
3039 Perl_croak(aTHX_ "Permission denied");
3041 /* If we can swap euid and uid, then we can determine access rights
3042 * with a simple stat of the file, and then compare device and
3043 * inode to make sure we did stat() on the same file we opened.
3044 * Then we just have to make sure he or she can execute it.
3047 struct stat tmpstatbuf;
3051 setreuid(PL_euid,PL_uid) < 0
3054 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
3057 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
3058 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
3059 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
3060 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
3061 #if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
3062 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
3063 Perl_croak(aTHX_ "Permission denied");
3065 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
3066 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
3067 (void)PerlIO_close(PL_rsfp);
3068 Perl_croak(aTHX_ "Permission denied\n");
3072 setreuid(PL_uid,PL_euid) < 0
3074 # if defined(HAS_SETRESUID)
3075 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
3078 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
3079 Perl_croak(aTHX_ "Can't reswap uid and euid");
3080 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
3081 Perl_croak(aTHX_ "Permission denied\n");
3083 #endif /* HAS_SETREUID */
3084 #endif /* IAMSUID */
3086 if (!S_ISREG(PL_statbuf.st_mode))
3087 Perl_croak(aTHX_ "Permission denied");
3088 if (PL_statbuf.st_mode & S_IWOTH)
3089 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
3090 PL_doswitches = FALSE; /* -s is insecure in suid */
3091 CopLINE_inc(PL_curcop);
3092 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
3093 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
3094 Perl_croak(aTHX_ "No #! line");
3095 s = SvPV(PL_linestr,n_a)+2;
3097 while (!isSPACE(*s)) s++;
3098 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
3099 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
3100 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
3101 Perl_croak(aTHX_ "Not a perl script");
3102 while (*s == ' ' || *s == '\t') s++;
3104 * #! arg must be what we saw above. They can invoke it by
3105 * mentioning suidperl explicitly, but they may not add any strange
3106 * arguments beyond what #! says if they do invoke suidperl that way.
3108 len = strlen(validarg);
3109 if (strEQ(validarg," PHOOEY ") ||
3110 strnNE(s,validarg,len) || !isSPACE(s[len]))
3111 Perl_croak(aTHX_ "Args must match #! line");
3114 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
3115 PL_euid == PL_statbuf.st_uid)
3117 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3118 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3119 #endif /* IAMSUID */
3121 if (PL_euid) { /* oops, we're not the setuid root perl */
3122 (void)PerlIO_close(PL_rsfp);
3125 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
3126 (int)PERL_REVISION, (int)PERL_VERSION,
3127 (int)PERL_SUBVERSION), PL_origargv);
3129 Perl_croak(aTHX_ "Can't do setuid\n");
3132 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
3134 (void)setegid(PL_statbuf.st_gid);
3137 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
3139 #ifdef HAS_SETRESGID
3140 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
3142 PerlProc_setgid(PL_statbuf.st_gid);
3146 if (PerlProc_getegid() != PL_statbuf.st_gid)
3147 Perl_croak(aTHX_ "Can't do setegid!\n");
3149 if (PL_statbuf.st_mode & S_ISUID) {
3150 if (PL_statbuf.st_uid != PL_euid)
3152 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
3155 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
3157 #ifdef HAS_SETRESUID
3158 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
3160 PerlProc_setuid(PL_statbuf.st_uid);
3164 if (PerlProc_geteuid() != PL_statbuf.st_uid)
3165 Perl_croak(aTHX_ "Can't do seteuid!\n");
3167 else if (PL_uid) { /* oops, mustn't run as root */
3169 (void)seteuid((Uid_t)PL_uid);
3172 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
3174 #ifdef HAS_SETRESUID
3175 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
3177 PerlProc_setuid((Uid_t)PL_uid);
3181 if (PerlProc_geteuid() != PL_uid)
3182 Perl_croak(aTHX_ "Can't do seteuid!\n");
3185 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
3186 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
3189 else if (PL_preprocess)
3190 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
3191 else if (fdscript >= 0)
3192 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
3194 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
3196 /* We absolutely must clear out any saved ids here, so we */
3197 /* exec the real perl, substituting fd script for scriptname. */
3198 /* (We pass script name as "subdir" of fd, which perl will grok.) */
3199 PerlIO_rewind(PL_rsfp);
3200 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
3201 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3202 if (!PL_origargv[which])
3203 Perl_croak(aTHX_ "Permission denied");
3204 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
3205 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
3206 #if defined(HAS_FCNTL) && defined(F_SETFD)
3207 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
3209 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
3210 (int)PERL_REVISION, (int)PERL_VERSION,
3211 (int)PERL_SUBVERSION), PL_origargv);/* try again */
3212 Perl_croak(aTHX_ "Can't do setuid\n");
3213 #endif /* IAMSUID */
3215 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
3216 #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
3217 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3218 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3220 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3223 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3224 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3225 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3226 /* not set-id, must be wrapped */
3232 S_find_beginning(pTHX)
3234 register char *s, *s2;
3236 /* skip forward in input to the real script? */
3239 #ifdef MACOS_TRADITIONAL
3240 /* Since the Mac OS does not honor #! arguments for us, we do it ourselves */
3242 while (PL_doextract || gMacPerl_AlwaysExtract) {
3243 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3244 if (!gMacPerl_AlwaysExtract)
3245 Perl_croak(aTHX_ "No Perl script found in input\n");
3247 if (PL_doextract) /* require explicit override ? */
3248 if (!OverrideExtract(PL_origfilename))
3249 Perl_croak(aTHX_ "User aborted script\n");
3251 PL_doextract = FALSE;
3253 /* Pater peccavi, file does not have #! */
3254 PerlIO_rewind(PL_rsfp);
3259 while (PL_doextract) {
3260 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
3261 Perl_croak(aTHX_ "No Perl script found in input\n");
3264 if (*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))) {
3265 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3266 PL_doextract = FALSE;
3267 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3269 while (*s == ' ' || *s == '\t') s++;
3271 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3272 if (strnEQ(s2-4,"perl",4))
3274 while ((s = moreswitches(s)))
3277 #ifdef MACOS_TRADITIONAL
3288 PL_uid = PerlProc_getuid();
3289 PL_euid = PerlProc_geteuid();
3290 PL_gid = PerlProc_getgid();
3291 PL_egid = PerlProc_getegid();
3293 PL_uid |= PL_gid << 16;
3294 PL_euid |= PL_egid << 16;
3296 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3300 S_forbid_setid(pTHX_ char *s)
3302 if (PL_euid != PL_uid)
3303 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3304 if (PL_egid != PL_gid)
3305 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
3309 Perl_init_debugger(pTHX)
3311 HV *ostash = PL_curstash;
3313 PL_curstash = PL_debstash;
3314 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3315 AvREAL_off(PL_dbargs);
3316 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3317 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3318 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
3319 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3320 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
3321 sv_setiv(PL_DBsingle, 0);
3322 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
3323 sv_setiv(PL_DBtrace, 0);
3324 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
3325 sv_setiv(PL_DBsignal, 0);
3326 PL_curstash = ostash;
3329 #ifndef STRESS_REALLOC
3330 #define REASONABLE(size) (size)
3332 #define REASONABLE(size) (1) /* unreasonable */
3336 Perl_init_stacks(pTHX)
3338 /* start with 128-item stack and 8K cxstack */
3339 PL_curstackinfo = new_stackinfo(REASONABLE(128),
3340 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3341 PL_curstackinfo->si_type = PERLSI_MAIN;
3342 PL_curstack = PL_curstackinfo->si_stack;
3343 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
3345 PL_stack_base = AvARRAY(PL_curstack);
3346 PL_stack_sp = PL_stack_base;
3347 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
3349 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3352 PL_tmps_max = REASONABLE(128);
3354 New(54,PL_markstack,REASONABLE(32),I32);
3355 PL_markstack_ptr = PL_markstack;
3356 PL_markstack_max = PL_markstack + REASONABLE(32);
3360 New(54,PL_scopestack,REASONABLE(32),I32);
3361 PL_scopestack_ix = 0;
3362 PL_scopestack_max = REASONABLE(32);
3364 New(54,PL_savestack,REASONABLE(128),ANY);
3365 PL_savestack_ix = 0;
3366 PL_savestack_max = REASONABLE(128);
3368 New(54,PL_retstack,REASONABLE(16),OP*);
3370 PL_retstack_max = REASONABLE(16);
3378 while (PL_curstackinfo->si_next)
3379 PL_curstackinfo = PL_curstackinfo->si_next;
3380 while (PL_curstackinfo) {
3381 PERL_SI *p = PL_curstackinfo->si_prev;
3382 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3383 Safefree(PL_curstackinfo->si_cxstack);
3384 Safefree(PL_curstackinfo);
3385 PL_curstackinfo = p;
3387 Safefree(PL_tmps_stack);
3388 Safefree(PL_markstack);
3389 Safefree(PL_scopestack);
3390 Safefree(PL_savestack);
3391 Safefree(PL_retstack);
3400 lex_start(PL_linestr);
3402 PL_subname = newSVpvn("main",4);
3406 S_init_predump_symbols(pTHX)
3411 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3412 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3413 GvMULTI_on(PL_stdingv);
3414 io = GvIOp(PL_stdingv);
3415 IoTYPE(io) = IoTYPE_RDONLY;
3416 IoIFP(io) = PerlIO_stdin();
3417 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
3419 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3421 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
3424 IoTYPE(io) = IoTYPE_WRONLY;
3425 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
3427 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
3429 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3431 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3432 GvMULTI_on(PL_stderrgv);
3433 io = GvIOp(PL_stderrgv);
3434 IoTYPE(io) = IoTYPE_WRONLY;
3435 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
3436 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
3438 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3440 PL_statname = NEWSV(66,0); /* last filename we did stat on */
3443 Safefree(PL_osname);
3444 PL_osname = savepv(OSNAME);
3448 Perl_init_argv_symbols(pTHX_ register int argc, register char **argv)
3451 argc--,argv++; /* skip name of script */
3452 if (PL_doswitches) {
3453 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3456 if (argv[0][1] == '-' && !argv[0][2]) {
3460 if ((s = strchr(argv[0], '='))) {
3462 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
3465 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
3468 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3469 GvMULTI_on(PL_argvgv);
3470 (void)gv_AVadd(PL_argvgv);
3471 av_clear(GvAVn(PL_argvgv));
3472 for (; argc > 0; argc--,argv++) {
3473 SV *sv = newSVpv(argv[0],0);
3474 av_push(GvAVn(PL_argvgv),sv);
3475 if (PL_widesyscalls)
3476 (void)sv_utf8_decode(sv);
3481 #ifdef HAS_PROCSELFEXE
3482 /* This is a function so that we don't hold on to MAXPATHLEN
3483 bytes of stack longer than necessary
3486 S_procself_val(pTHX_ SV *sv, char *arg0)
3488 char buf[MAXPATHLEN];
3489 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
3490 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
3491 returning the text "unknown" from the readlink rather than the path
3492 to the executable (or returning an error from the readlink). Any valid
3493 path has a '/' in it somewhere, so use that to validate the result.
3494 See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
3496 if (len > 0 && memchr(buf, '/', len)) {
3497 sv_setpvn(sv,buf,len);
3503 #endif /* HAS_PROCSELFEXE */
3506 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
3512 PL_toptarget = NEWSV(0,0);
3513 sv_upgrade(PL_toptarget, SVt_PVFM);
3514 sv_setpvn(PL_toptarget, "", 0);
3515 PL_bodytarget = NEWSV(0,0);
3516 sv_upgrade(PL_bodytarget, SVt_PVFM);
3517 sv_setpvn(PL_bodytarget, "", 0);
3518 PL_formtarget = PL_bodytarget;
3522 init_argv_symbols(argc,argv);
3524 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
3525 #ifdef MACOS_TRADITIONAL
3526 /* $0 is not majick on a Mac */
3527 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3529 sv_setpv(GvSV(tmpgv),PL_origfilename);
3530 magicname("0", "0", 1);
3533 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV))) {/* $^X */
3534 #ifdef HAS_PROCSELFEXE
3535 S_procself_val(aTHX_ GvSV(tmpgv), PL_origargv[0]);
3538 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
3540 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
3544 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
3546 GvMULTI_on(PL_envgv);
3547 hv = GvHVn(PL_envgv);
3548 hv_magic(hv, Nullgv, PERL_MAGIC_env);
3549 #ifdef USE_ENVIRON_ARRAY
3550 /* Note that if the supplied env parameter is actually a copy
3551 of the global environ then it may now point to free'd memory
3552 if the environment has been modified since. To avoid this
3553 problem we treat env==NULL as meaning 'use the default'
3558 environ[0] = Nullch;
3560 for (; *env; env++) {
3561 if (!(s = strchr(*env,'=')))
3568 sv = newSVpv(s+1, 0);
3569 (void)hv_store(hv, *env, s - *env, sv, 0);
3573 #endif /* USE_ENVIRON_ARRAY */
3576 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV))) {
3577 SvREADONLY_off(GvSV(tmpgv));
3578 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
3579 SvREADONLY_on(GvSV(tmpgv));
3582 /* touch @F array to prevent spurious warnings 20020415 MJD */
3584 (void) get_av("main::F", TRUE | GV_ADDMULTI);
3586 /* touch @- and @+ arrays to prevent spurious warnings 20020415 MJD */
3587 (void) get_av("main::-", TRUE | GV_ADDMULTI);
3588 (void) get_av("main::+", TRUE | GV_ADDMULTI);
3592 S_init_perllib(pTHX)
3597 s = PerlEnv_getenv("PERL5LIB");
3599 incpush(s, TRUE, TRUE);
3601 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE);
3603 /* Treat PERL5?LIB as a possible search list logical name -- the
3604 * "natural" VMS idiom for a Unix path string. We allow each
3605 * element to be a set of |-separated directories for compatibility.
3609 if (my_trnlnm("PERL5LIB",buf,0))
3610 do { incpush(buf,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
3612 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE);
3616 /* Use the ~-expanded versions of APPLLIB (undocumented),
3617 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
3620 incpush(APPLLIB_EXP, TRUE, TRUE);
3624 incpush(ARCHLIB_EXP, FALSE, FALSE);
3626 #ifdef MACOS_TRADITIONAL
3628 struct stat tmpstatbuf;
3629 SV * privdir = NEWSV(55, 0);
3630 char * macperl = PerlEnv_getenv("MACPERL");
3635 Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl);
3636 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3637 incpush(SvPVX(privdir), TRUE, FALSE);
3638 Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl);
3639 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3640 incpush(SvPVX(privdir), TRUE, FALSE);
3642 SvREFCNT_dec(privdir);
3645 incpush(":", FALSE, FALSE);
3648 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
3651 incpush(PRIVLIB_EXP, TRUE, FALSE);
3653 incpush(PRIVLIB_EXP, FALSE, FALSE);
3657 /* sitearch is always relative to sitelib on Windows for
3658 * DLL-based path intuition to work correctly */
3659 # if !defined(WIN32)
3660 incpush(SITEARCH_EXP, FALSE, FALSE);
3666 incpush(SITELIB_EXP, TRUE, FALSE); /* this picks up sitearch as well */
3668 incpush(SITELIB_EXP, FALSE, FALSE);
3672 #ifdef SITELIB_STEM /* Search for version-specific dirs below here */
3673 incpush(SITELIB_STEM, FALSE, TRUE);
3676 #ifdef PERL_VENDORARCH_EXP
3677 /* vendorarch is always relative to vendorlib on Windows for
3678 * DLL-based path intuition to work correctly */
3679 # if !defined(WIN32)
3680 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE);
3684 #ifdef PERL_VENDORLIB_EXP
3686 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE); /* this picks up vendorarch as well */
3688 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE);
3692 #ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
3693 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE);
3696 #ifdef PERL_OTHERLIBDIRS
3697 incpush(PERL_OTHERLIBDIRS, TRUE, TRUE);
3701 incpush(".", FALSE, FALSE);
3702 #endif /* MACOS_TRADITIONAL */
3705 #if defined(DOSISH) || defined(EPOC)
3706 # define PERLLIB_SEP ';'
3709 # define PERLLIB_SEP '|'
3711 # if defined(MACOS_TRADITIONAL)
3712 # define PERLLIB_SEP ','
3714 # define PERLLIB_SEP ':'
3718 #ifndef PERLLIB_MANGLE
3719 # define PERLLIB_MANGLE(s,n) (s)
3723 S_incpush(pTHX_ char *p, int addsubdirs, int addoldvers)
3725 SV *subdir = Nullsv;
3730 if (addsubdirs || addoldvers) {
3731 subdir = sv_newmortal();
3734 /* Break at all separators */
3736 SV *libdir = NEWSV(55,0);
3739 /* skip any consecutive separators */
3740 while ( *p == PERLLIB_SEP ) {
3741 /* Uncomment the next line for PATH semantics */
3742 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
3746 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
3747 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
3752 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
3753 p = Nullch; /* break out */
3755 #ifdef MACOS_TRADITIONAL
3756 if (!strchr(SvPVX(libdir), ':'))
3757 sv_insert(libdir, 0, 0, ":", 1);
3758 if (SvPVX(libdir)[SvCUR(libdir)-1] != ':')
3759 sv_catpv(libdir, ":");
3763 * BEFORE pushing libdir onto @INC we may first push version- and
3764 * archname-specific sub-directories.
3766 if (addsubdirs || addoldvers) {
3767 #ifdef PERL_INC_VERSION_LIST
3768 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
3769 const char *incverlist[] = { PERL_INC_VERSION_LIST };
3770 const char **incver;
3772 struct stat tmpstatbuf;
3777 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
3779 while (unix[len-1] == '/') len--; /* Cosmetic */
3780 sv_usepvn(libdir,unix,len);
3783 PerlIO_printf(Perl_error_log,
3784 "Failed to unixify @INC element \"%s\"\n",
3788 #ifdef MACOS_TRADITIONAL
3789 #define PERL_AV_SUFFIX_FMT ""
3790 #define PERL_ARCH_FMT "%s:"
3791 #define PERL_ARCH_FMT_PATH PERL_FS_VER_FMT PERL_AV_SUFFIX_FMT
3793 #define PERL_AV_SUFFIX_FMT "/"
3794 #define PERL_ARCH_FMT "/%s"
3795 #define PERL_ARCH_FMT_PATH PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT
3797 /* .../version/archname if -d .../version/archname */
3798 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH PERL_ARCH_FMT,
3800 (int)PERL_REVISION, (int)PERL_VERSION,
3801 (int)PERL_SUBVERSION, ARCHNAME);
3802 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3803 S_ISDIR(tmpstatbuf.st_mode))
3804 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3806 /* .../version if -d .../version */
3807 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH, libdir,
3808 (int)PERL_REVISION, (int)PERL_VERSION,
3809 (int)PERL_SUBVERSION);
3810 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3811 S_ISDIR(tmpstatbuf.st_mode))
3812 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3814 /* .../archname if -d .../archname */
3815 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, ARCHNAME);
3816 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3817 S_ISDIR(tmpstatbuf.st_mode))
3818 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3821 #ifdef PERL_INC_VERSION_LIST
3823 for (incver = incverlist; *incver; incver++) {
3824 /* .../xxx if -d .../xxx */
3825 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, *incver);
3826 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3827 S_ISDIR(tmpstatbuf.st_mode))
3828 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3834 /* finally push this lib directory on the end of @INC */
3835 av_push(GvAVn(PL_incgv), libdir);
3839 #ifdef USE_5005THREADS
3840 STATIC struct perl_thread *
3841 S_init_main_thread(pTHX)
3843 #if !defined(PERL_IMPLICIT_CONTEXT)
3844 struct perl_thread *thr;
3848 Newz(53, thr, 1, struct perl_thread);
3849 PL_curcop = &PL_compiling;
3850 thr->interp = PERL_GET_INTERP;
3851 thr->cvcache = newHV();
3852 thr->threadsv = newAV();
3853 /* thr->threadsvp is set when find_threadsv is called */
3854 thr->specific = newAV();
3855 thr->flags = THRf_R_JOINABLE;
3856 MUTEX_INIT(&thr->mutex);
3857 /* Handcraft thrsv similarly to mess_sv */
3858 New(53, PL_thrsv, 1, SV);
3859 Newz(53, xpv, 1, XPV);
3860 SvFLAGS(PL_thrsv) = SVt_PV;
3861 SvANY(PL_thrsv) = (void*)xpv;
3862 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
3863 SvPVX(PL_thrsv) = (char*)thr;
3864 SvCUR_set(PL_thrsv, sizeof(thr));
3865 SvLEN_set(PL_thrsv, sizeof(thr));
3866 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
3867 thr->oursv = PL_thrsv;
3868 PL_chopset = " \n-";
3871 MUTEX_LOCK(&PL_threads_mutex);
3877 MUTEX_UNLOCK(&PL_threads_mutex);
3879 #ifdef HAVE_THREAD_INTERN
3880 Perl_init_thread_intern(thr);
3883 #ifdef SET_THREAD_SELF
3884 SET_THREAD_SELF(thr);
3886 thr->self = pthread_self();
3887 #endif /* SET_THREAD_SELF */
3891 * These must come after the thread self setting
3892 * because sv_setpvn does SvTAINT and the taint
3893 * fields thread selfness being set.
3895 PL_toptarget = NEWSV(0,0);
3896 sv_upgrade(PL_toptarget, SVt_PVFM);
3897 sv_setpvn(PL_toptarget, "", 0);
3898 PL_bodytarget = NEWSV(0,0);
3899 sv_upgrade(PL_bodytarget, SVt_PVFM);
3900 sv_setpvn(PL_bodytarget, "", 0);
3901 PL_formtarget = PL_bodytarget;
3902 thr->errsv = newSVpvn("", 0);
3903 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
3906 PL_peepp = MEMBER_TO_FPTR(Perl_peep);
3907 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3908 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3909 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3910 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3911 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
3913 PL_reginterp_cnt = 0;
3917 #endif /* USE_5005THREADS */
3920 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
3923 line_t oldline = CopLINE(PL_curcop);
3929 while (AvFILL(paramList) >= 0) {
3930 cv = (CV*)av_shift(paramList);
3931 if (PL_savebegin && (paramList == PL_beginav)) {
3932 /* save PL_beginav for compiler */
3933 if (! PL_beginav_save)
3934 PL_beginav_save = newAV();
3935 av_push(PL_beginav_save, (SV*)cv);
3939 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3940 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_list_body), cv);
3946 #ifndef PERL_FLEXIBLE_EXCEPTIONS
3950 (void)SvPV(atsv, len);
3953 PL_curcop = &PL_compiling;
3954 CopLINE_set(PL_curcop, oldline);
3955 if (paramList == PL_beginav)
3956 sv_catpv(atsv, "BEGIN failed--compilation aborted");
3958 Perl_sv_catpvf(aTHX_ atsv,
3959 "%s failed--call queue aborted",
3960 paramList == PL_checkav ? "CHECK"
3961 : paramList == PL_initav ? "INIT"
3963 while (PL_scopestack_ix > oldscope)
3966 Perl_croak(aTHX_ "%s", SvPVx(atsv, n_a));
3973 /* my_exit() was called */
3974 while (PL_scopestack_ix > oldscope)
3977 PL_curstash = PL_defstash;
3978 PL_curcop = &PL_compiling;
3979 CopLINE_set(PL_curcop, oldline);
3981 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
3982 if (paramList == PL_beginav)
3983 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
3985 Perl_croak(aTHX_ "%s failed--call queue aborted",
3986 paramList == PL_checkav ? "CHECK"
3987 : paramList == PL_initav ? "INIT"
3994 PL_curcop = &PL_compiling;
3995 CopLINE_set(PL_curcop, oldline);
3998 PerlIO_printf(Perl_error_log, "panic: restartop\n");
4006 #ifdef PERL_FLEXIBLE_EXCEPTIONS
4008 S_vcall_list_body(pTHX_ va_list args)
4010 CV *cv = va_arg(args, CV*);
4011 return call_list_body(cv);
4016 S_call_list_body(pTHX_ CV *cv)
4018 PUSHMARK(PL_stack_sp);
4019 call_sv((SV*)cv, G_EVAL|G_DISCARD);
4024 Perl_my_exit(pTHX_ U32 status)
4026 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
4027 thr, (unsigned long) status));
4036 STATUS_NATIVE_SET(status);
4043 Perl_my_failure_exit(pTHX)
4046 if (vaxc$errno & 1) {
4047 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
4048 STATUS_NATIVE_SET(44);
4051 if (!vaxc$errno && errno) /* unlikely */
4052 STATUS_NATIVE_SET(44);
4054 STATUS_NATIVE_SET(vaxc$errno);
4059 STATUS_POSIX_SET(errno);
4061 exitstatus = STATUS_POSIX >> 8;
4062 if (exitstatus & 255)
4063 STATUS_POSIX_SET(exitstatus);
4065 STATUS_POSIX_SET(255);
4072 S_my_exit_jump(pTHX)
4074 register PERL_CONTEXT *cx;
4079 SvREFCNT_dec(PL_e_script);
4080 PL_e_script = Nullsv;
4083 POPSTACK_TO(PL_mainstack);
4084 if (cxstack_ix >= 0) {
4087 POPBLOCK(cx,PL_curpm);
4095 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen)
4098 p = SvPVX(PL_e_script);
4099 nl = strchr(p, '\n');
4100 nl = (nl) ? nl+1 : SvEND(PL_e_script);
4102 filter_del(read_e_script);
4105 sv_catpvn(buf_sv, p, nl-p);
4106 sv_chop(PL_e_script, nl);