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 PL_utf8_alnum = Nullsv;
690 PL_utf8_alnumc = Nullsv;
691 PL_utf8_ascii = Nullsv;
692 PL_utf8_alpha = Nullsv;
693 PL_utf8_space = Nullsv;
694 PL_utf8_cntrl = Nullsv;
695 PL_utf8_graph = Nullsv;
696 PL_utf8_digit = Nullsv;
697 PL_utf8_upper = Nullsv;
698 PL_utf8_lower = Nullsv;
699 PL_utf8_print = Nullsv;
700 PL_utf8_punct = Nullsv;
701 PL_utf8_xdigit = Nullsv;
702 PL_utf8_mark = Nullsv;
703 PL_utf8_toupper = Nullsv;
704 PL_utf8_totitle = Nullsv;
705 PL_utf8_tolower = Nullsv;
706 PL_utf8_tofold = Nullsv;
708 if (!specialWARN(PL_compiling.cop_warnings))
709 SvREFCNT_dec(PL_compiling.cop_warnings);
710 PL_compiling.cop_warnings = Nullsv;
711 if (!specialCopIO(PL_compiling.cop_io))
712 SvREFCNT_dec(PL_compiling.cop_io);
713 PL_compiling.cop_io = Nullsv;
714 CopFILE_free(&PL_compiling);
715 CopSTASH_free(&PL_compiling);
717 /* Prepare to destruct main symbol table. */
722 SvREFCNT_dec(PL_curstname);
723 PL_curstname = Nullsv;
725 /* clear queued errors */
726 SvREFCNT_dec(PL_errors);
730 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
731 if (PL_scopestack_ix != 0)
732 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
733 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
734 (long)PL_scopestack_ix);
735 if (PL_savestack_ix != 0)
736 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
737 "Unbalanced saves: %ld more saves than restores\n",
738 (long)PL_savestack_ix);
739 if (PL_tmps_floor != -1)
740 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
741 (long)PL_tmps_floor + 1);
742 if (cxstack_ix != -1)
743 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
744 (long)cxstack_ix + 1);
747 /* Now absolutely destruct everything, somehow or other, loops or no. */
748 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
749 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
751 /* the 2 is for PL_fdpid and PL_strtab */
752 while (PL_sv_count > 2 && sv_clean_all())
755 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
756 SvFLAGS(PL_fdpid) |= SVt_PVAV;
757 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
758 SvFLAGS(PL_strtab) |= SVt_PVHV;
760 AvREAL_off(PL_fdpid); /* no surviving entries */
761 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
764 #ifdef HAVE_INTERP_INTERN
768 /* Destruct the global string table. */
770 /* Yell and reset the HeVAL() slots that are still holding refcounts,
771 * so that sv_free() won't fail on them.
779 max = HvMAX(PL_strtab);
780 array = HvARRAY(PL_strtab);
783 if (hent && ckWARN_d(WARN_INTERNAL)) {
784 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
785 "Unbalanced string table refcount: (%d) for \"%s\"",
786 HeVAL(hent) - Nullsv, HeKEY(hent));
787 HeVAL(hent) = Nullsv;
797 SvREFCNT_dec(PL_strtab);
800 /* free the pointer table used for cloning */
801 ptr_table_free(PL_ptr_table);
804 /* free special SVs */
806 SvREFCNT(&PL_sv_yes) = 0;
807 sv_clear(&PL_sv_yes);
808 SvANY(&PL_sv_yes) = NULL;
809 SvFLAGS(&PL_sv_yes) = 0;
811 SvREFCNT(&PL_sv_no) = 0;
813 SvANY(&PL_sv_no) = NULL;
814 SvFLAGS(&PL_sv_no) = 0;
816 SvREFCNT(&PL_sv_undef) = 0;
817 SvREADONLY_off(&PL_sv_undef);
819 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
820 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
822 #if defined(PERLIO_LAYERS)
823 /* No more IO - including error messages ! */
824 PerlIO_cleanup(aTHX);
827 Safefree(PL_origfilename);
828 Safefree(PL_reg_start_tmp);
830 Safefree(PL_reg_curpm);
831 Safefree(PL_reg_poscache);
832 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
833 Safefree(PL_op_mask);
834 Safefree(PL_psig_ptr);
835 Safefree(PL_psig_name);
836 Safefree(PL_bitcount);
837 Safefree(PL_psig_pend);
839 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
841 DEBUG_P(debprofdump());
842 #ifdef USE_5005THREADS
843 MUTEX_DESTROY(&PL_strtab_mutex);
844 MUTEX_DESTROY(&PL_sv_mutex);
845 MUTEX_DESTROY(&PL_eval_mutex);
846 MUTEX_DESTROY(&PL_cred_mutex);
847 MUTEX_DESTROY(&PL_fdpid_mutex);
848 COND_DESTROY(&PL_eval_cond);
849 #ifdef EMULATE_ATOMIC_REFCOUNTS
850 MUTEX_DESTROY(&PL_svref_mutex);
851 #endif /* EMULATE_ATOMIC_REFCOUNTS */
853 /* As the penultimate thing, free the non-arena SV for thrsv */
854 Safefree(SvPVX(PL_thrsv));
855 Safefree(SvANY(PL_thrsv));
858 #endif /* USE_5005THREADS */
860 #ifdef USE_REENTRANT_API
861 Perl_reentrant_free(aTHX);
866 /* As the absolutely last thing, free the non-arena SV for mess() */
869 /* it could have accumulated taint magic */
870 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
873 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
874 moremagic = mg->mg_moremagic;
875 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
877 Safefree(mg->mg_ptr);
881 /* we know that type >= SVt_PV */
882 (void)SvOOK_off(PL_mess_sv);
883 Safefree(SvPVX(PL_mess_sv));
884 Safefree(SvANY(PL_mess_sv));
885 Safefree(PL_mess_sv);
888 return STATUS_NATIVE_EXPORT;
892 =for apidoc perl_free
894 Releases a Perl interpreter. See L<perlembed>.
902 #if defined(WIN32) || defined(NETWARE)
903 # if defined(PERL_IMPLICIT_SYS)
905 void *host = nw_internal_host;
907 void *host = w32_internal_host;
911 nw5_delete_internal_host(host);
913 win32_delete_internal_host(host);
924 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
926 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
927 PL_exitlist[PL_exitlistlen].fn = fn;
928 PL_exitlist[PL_exitlistlen].ptr = ptr;
933 =for apidoc perl_parse
935 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
941 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
946 #ifdef USE_5005THREADS
950 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
953 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
954 setuid perl scripts securely.\n");
960 /* we copy rather than point to argv
961 * since perl_clone will copy and perl_destruct
962 * has no way of knowing if we've made a copy or
966 New(0, PL_origargv, i+1, char*);
967 PL_origargv[i] = '\0';
969 PL_origargv[i] = savepv(argv[i]);
977 /* Come here if running an undumped a.out. */
979 PL_origfilename = savepv(argv[0]);
980 PL_do_undump = FALSE;
981 cxstack_ix = -1; /* start label stack again */
983 init_postdump_symbols(argc,argv,env);
988 PL_curpad = AvARRAY(PL_comppad);
989 op_free(PL_main_root);
990 PL_main_root = Nullop;
992 PL_main_start = Nullop;
993 SvREFCNT_dec(PL_main_cv);
997 oldscope = PL_scopestack_ix;
998 PL_dowarn = G_WARN_OFF;
1000 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1001 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
1007 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1008 parse_body(env,xsinit);
1011 call_list(oldscope, PL_checkav);
1018 /* my_exit() was called */
1019 while (PL_scopestack_ix > oldscope)
1022 PL_curstash = PL_defstash;
1024 call_list(oldscope, PL_checkav);
1025 ret = STATUS_NATIVE_EXPORT;
1028 PerlIO_printf(Perl_error_log, "panic: top_env\n");
1036 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1038 S_vparse_body(pTHX_ va_list args)
1040 char **env = va_arg(args, char**);
1041 XSINIT_t xsinit = va_arg(args, XSINIT_t);
1043 return parse_body(env, xsinit);
1048 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
1050 int argc = PL_origargc;
1051 char **argv = PL_origargv;
1052 char *scriptname = NULL;
1054 VOL bool dosearch = FALSE;
1055 char *validarg = "";
1059 char *cddir = Nullch;
1061 sv_setpvn(PL_linestr,"",0);
1062 sv = newSVpvn("",0); /* first used for -I flags */
1066 for (argc--,argv++; argc > 0; argc--,argv++) {
1067 if (argv[0][0] != '-' || !argv[0][1])
1071 validarg = " PHOOEY ";
1080 win32_argv2utf8(argc-1, argv+1);
1083 #ifndef PERL_STRICT_CR
1107 if ((s = moreswitches(s)))
1112 if( !PL_tainting ) {
1113 PL_taint_warn = TRUE;
1120 PL_taint_warn = FALSE;
1125 #ifdef MACOS_TRADITIONAL
1126 /* ignore -e for Dev:Pseudo argument */
1127 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
1130 if (PL_euid != PL_uid || PL_egid != PL_gid)
1131 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
1133 PL_e_script = newSVpvn("",0);
1134 filter_add(read_e_script, NULL);
1137 sv_catpv(PL_e_script, s);
1139 sv_catpv(PL_e_script, argv[1]);
1143 Perl_croak(aTHX_ "No code specified for -e");
1144 sv_catpv(PL_e_script, "\n");
1147 case 'I': /* -I handled both here and in moreswitches() */
1149 if (!*++s && (s=argv[1]) != Nullch) {
1154 STRLEN len = strlen(s);
1155 p = savepvn(s, len);
1156 incpush(p, TRUE, TRUE);
1157 sv_catpvn(sv, "-I", 2);
1158 sv_catpvn(sv, p, len);
1159 sv_catpvn(sv, " ", 1);
1163 Perl_croak(aTHX_ "No directory specified for -I");
1167 PL_preprocess = TRUE;
1177 PL_preambleav = newAV();
1178 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
1180 PL_Sv = newSVpv("print myconfig();",0);
1182 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
1184 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
1186 sv_catpv(PL_Sv,"\" Compile-time options:");
1188 sv_catpv(PL_Sv," DEBUGGING");
1190 # ifdef MULTIPLICITY
1191 sv_catpv(PL_Sv," MULTIPLICITY");
1193 # ifdef USE_5005THREADS
1194 sv_catpv(PL_Sv," USE_5005THREADS");
1196 # ifdef USE_ITHREADS
1197 sv_catpv(PL_Sv," USE_ITHREADS");
1199 # ifdef USE_64_BIT_INT
1200 sv_catpv(PL_Sv," USE_64_BIT_INT");
1202 # ifdef USE_64_BIT_ALL
1203 sv_catpv(PL_Sv," USE_64_BIT_ALL");
1205 # ifdef USE_LONG_DOUBLE
1206 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1208 # ifdef USE_LARGE_FILES
1209 sv_catpv(PL_Sv," USE_LARGE_FILES");
1212 sv_catpv(PL_Sv," USE_SOCKS");
1214 # ifdef PERL_IMPLICIT_CONTEXT
1215 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1217 # ifdef PERL_IMPLICIT_SYS
1218 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1220 sv_catpv(PL_Sv,"\\n\",");
1222 #if defined(LOCAL_PATCH_COUNT)
1223 if (LOCAL_PATCH_COUNT > 0) {
1225 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
1226 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1227 if (PL_localpatches[i])
1228 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
1232 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
1235 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
1237 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
1240 sv_catpv(PL_Sv, "; \
1242 @env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; ");
1245 push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
1248 print \" \\%ENV:\\n @env\\n\" if @env; \
1249 print \" \\@INC:\\n @INC\\n\";");
1252 PL_Sv = newSVpv("config_vars(qw(",0);
1253 sv_catpv(PL_Sv, ++s);
1254 sv_catpv(PL_Sv, "))");
1257 av_push(PL_preambleav, PL_Sv);
1258 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1261 PL_doextract = TRUE;
1269 if (!*++s || isSPACE(*s)) {
1273 /* catch use of gnu style long options */
1274 if (strEQ(s, "version")) {
1278 if (strEQ(s, "help")) {
1285 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1291 #ifndef SECURE_INTERNAL_GETENV
1294 (s = PerlEnv_getenv("PERL5OPT")))
1299 if (*s == '-' && *(s+1) == 'T') {
1301 PL_taint_warn = FALSE;
1304 char *popt_copy = Nullch;
1317 if (!strchr("DIMUdmtw", *s))
1318 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
1322 popt_copy = SvPVX(sv_2mortal(newSVpv(popt,0)));
1323 s = popt_copy + (s - popt);
1324 d = popt_copy + (d - popt);
1331 if( !PL_tainting ) {
1332 PL_taint_warn = TRUE;
1342 if (PL_taint_warn && PL_dowarn != G_WARN_ALL_OFF) {
1343 PL_compiling.cop_warnings = newSVpvn(WARN_TAINTstring, WARNsize);
1347 scriptname = argv[0];
1350 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1352 else if (scriptname == Nullch) {
1354 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1362 open_script(scriptname,dosearch,sv,&fdscript);
1364 validate_suid(validarg, scriptname,fdscript);
1367 #if defined(SIGCHLD) || defined(SIGCLD)
1370 # define SIGCHLD SIGCLD
1372 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1373 if (sigstate == SIG_IGN) {
1374 if (ckWARN(WARN_SIGNAL))
1375 Perl_warner(aTHX_ packWARN(WARN_SIGNAL),
1376 "Can't ignore signal CHLD, forcing to default");
1377 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1383 #ifdef MACOS_TRADITIONAL
1384 if (PL_doextract || gMacPerl_AlwaysExtract) {
1389 if (cddir && PerlDir_chdir(cddir) < 0)
1390 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1394 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1395 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1396 CvUNIQUE_on(PL_compcv);
1398 PL_comppad = newAV();
1399 av_push(PL_comppad, Nullsv);
1400 PL_curpad = AvARRAY(PL_comppad);
1401 PL_comppad_name = newAV();
1402 PL_comppad_name_fill = 0;
1403 PL_min_intro_pending = 0;
1405 #ifdef USE_5005THREADS
1406 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
1407 PL_curpad[0] = (SV*)newAV();
1408 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1409 CvOWNER(PL_compcv) = 0;
1410 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1411 MUTEX_INIT(CvMUTEXP(PL_compcv));
1412 #endif /* USE_5005THREADS */
1414 comppadlist = newAV();
1415 AvREAL_off(comppadlist);
1416 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1417 av_store(comppadlist, 1, (SV*)PL_comppad);
1418 CvPADLIST(PL_compcv) = comppadlist;
1421 boot_core_UNIVERSAL();
1423 boot_core_xsutils();
1427 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
1429 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
1435 # ifdef HAS_SOCKS5_INIT
1436 socks5_init(argv[0]);
1442 init_predump_symbols();
1443 /* init_postdump_symbols not currently designed to be called */
1444 /* more than once (ENV isn't cleared first, for example) */
1445 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
1447 init_postdump_symbols(argc,argv,env);
1449 if (PL_wantutf8) { /* Requires init_predump_symbols(). */
1453 if (PL_stdingv && (io = GvIO(PL_stdingv)) && (fp = IoIFP(io)))
1454 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
1455 if (PL_defoutgv && (io = GvIO(PL_defoutgv)) && (fp = IoOFP(io)))
1456 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
1457 if (PL_stderrgv && (io = GvIO(PL_stderrgv)) && (fp = IoOFP(io)))
1458 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
1459 if ((sv = GvSV(gv_fetchpv("\017PEN", TRUE, SVt_PV)))) {
1460 sv_setpvn(sv, ":utf8\0:utf8", 11);
1467 /* now parse the script */
1469 SETERRNO(0,SS$_NORMAL);
1471 #ifdef MACOS_TRADITIONAL
1472 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1474 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1476 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1477 MacPerl_MPWFileName(PL_origfilename));
1481 if (yyparse() || PL_error_count) {
1483 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
1485 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1490 CopLINE_set(PL_curcop, 0);
1491 PL_curstash = PL_defstash;
1492 PL_preprocess = FALSE;
1494 SvREFCNT_dec(PL_e_script);
1495 PL_e_script = Nullsv;
1499 Not sure that this is still the right place to do this now that we
1500 no longer use PL_nrs. HVDS 2001/09/09
1502 sv_setsv(get_sv("/", TRUE), PL_rs);
1508 SAVECOPFILE(PL_curcop);
1509 SAVECOPLINE(PL_curcop);
1510 gv_check(PL_defstash);
1517 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1518 dump_mstats("after compilation:");
1527 =for apidoc perl_run
1529 Tells a Perl interpreter to run. See L<perlembed>.
1540 #ifdef USE_5005THREADS
1544 oldscope = PL_scopestack_ix;
1549 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1551 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1557 cxstack_ix = -1; /* start context stack again */
1559 case 0: /* normal completion */
1560 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1565 case 2: /* my_exit() */
1566 while (PL_scopestack_ix > oldscope)
1569 PL_curstash = PL_defstash;
1570 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
1571 PL_endav && !PL_minus_c)
1572 call_list(oldscope, PL_endav);
1574 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1575 dump_mstats("after execution: ");
1577 ret = STATUS_NATIVE_EXPORT;
1581 POPSTACK_TO(PL_mainstack);
1584 PerlIO_printf(Perl_error_log, "panic: restartop\n");
1594 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1596 S_vrun_body(pTHX_ va_list args)
1598 I32 oldscope = va_arg(args, I32);
1600 return run_body(oldscope);
1606 S_run_body(pTHX_ I32 oldscope)
1608 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
1609 PL_sawampersand ? "Enabling" : "Omitting"));
1611 if (!PL_restartop) {
1612 DEBUG_x(dump_all());
1613 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
1614 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1618 #ifdef MACOS_TRADITIONAL
1619 PerlIO_printf(Perl_error_log, "# %s syntax OK\n", MacPerl_MPWFileName(PL_origfilename));
1621 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
1625 if (PERLDB_SINGLE && PL_DBsingle)
1626 sv_setiv(PL_DBsingle, 1);
1628 call_list(oldscope, PL_initav);
1634 PL_op = PL_restartop;
1638 else if (PL_main_start) {
1639 CvDEPTH(PL_main_cv) = 1;
1640 PL_op = PL_main_start;
1650 =head1 SV Manipulation Functions
1652 =for apidoc p||get_sv
1654 Returns the SV of the specified Perl scalar. If C<create> is set and the
1655 Perl variable does not exist then it will be created. If C<create> is not
1656 set and the variable does not exist then NULL is returned.
1662 Perl_get_sv(pTHX_ const char *name, I32 create)
1665 #ifdef USE_5005THREADS
1666 if (name[1] == '\0' && !isALPHA(name[0])) {
1667 PADOFFSET tmp = find_threadsv(name);
1668 if (tmp != NOT_IN_PAD)
1669 return THREADSV(tmp);
1671 #endif /* USE_5005THREADS */
1672 gv = gv_fetchpv(name, create, SVt_PV);
1679 =head1 Array Manipulation Functions
1681 =for apidoc p||get_av
1683 Returns the AV of the specified Perl array. If C<create> is set and the
1684 Perl variable does not exist then it will be created. If C<create> is not
1685 set and the variable does not exist then NULL is returned.
1691 Perl_get_av(pTHX_ const char *name, I32 create)
1693 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1702 =head1 Hash Manipulation Functions
1704 =for apidoc p||get_hv
1706 Returns the HV of the specified Perl hash. If C<create> is set and the
1707 Perl variable does not exist then it will be created. If C<create> is not
1708 set and the variable does not exist then NULL is returned.
1714 Perl_get_hv(pTHX_ const char *name, I32 create)
1716 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1725 =head1 CV Manipulation Functions
1727 =for apidoc p||get_cv
1729 Returns the CV of the specified Perl subroutine. If C<create> is set and
1730 the Perl subroutine does not exist then it will be declared (which has the
1731 same effect as saying C<sub name;>). If C<create> is not set and the
1732 subroutine does not exist then NULL is returned.
1738 Perl_get_cv(pTHX_ const char *name, I32 create)
1740 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
1741 /* XXX unsafe for threads if eval_owner isn't held */
1742 /* XXX this is probably not what they think they're getting.
1743 * It has the same effect as "sub name;", i.e. just a forward
1745 if (create && !GvCVu(gv))
1746 return newSUB(start_subparse(FALSE, 0),
1747 newSVOP(OP_CONST, 0, newSVpv(name,0)),
1755 /* Be sure to refetch the stack pointer after calling these routines. */
1759 =head1 Callback Functions
1761 =for apidoc p||call_argv
1763 Performs a callback to the specified Perl sub. See L<perlcall>.
1769 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
1771 /* See G_* flags in cop.h */
1772 /* null terminated arg list */
1779 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
1784 return call_pv(sub_name, flags);
1788 =for apidoc p||call_pv
1790 Performs a callback to the specified Perl sub. See L<perlcall>.
1796 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
1797 /* name of the subroutine */
1798 /* See G_* flags in cop.h */
1800 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
1804 =for apidoc p||call_method
1806 Performs a callback to the specified Perl method. The blessed object must
1807 be on the stack. See L<perlcall>.
1813 Perl_call_method(pTHX_ const char *methname, I32 flags)
1814 /* name of the subroutine */
1815 /* See G_* flags in cop.h */
1817 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
1820 /* May be called with any of a CV, a GV, or an SV containing the name. */
1822 =for apidoc p||call_sv
1824 Performs a callback to the Perl sub whose name is in the SV. See
1831 Perl_call_sv(pTHX_ SV *sv, I32 flags)
1832 /* See G_* flags in cop.h */
1835 LOGOP myop; /* fake syntax tree node */
1838 volatile I32 retval = 0;
1840 bool oldcatch = CATCH_GET;
1845 if (flags & G_DISCARD) {
1850 Zero(&myop, 1, LOGOP);
1851 myop.op_next = Nullop;
1852 if (!(flags & G_NOARGS))
1853 myop.op_flags |= OPf_STACKED;
1854 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1855 (flags & G_ARRAY) ? OPf_WANT_LIST :
1860 EXTEND(PL_stack_sp, 1);
1861 *++PL_stack_sp = sv;
1863 oldscope = PL_scopestack_ix;
1865 if (PERLDB_SUB && PL_curstash != PL_debstash
1866 /* Handle first BEGIN of -d. */
1867 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
1868 /* Try harder, since this may have been a sighandler, thus
1869 * curstash may be meaningless. */
1870 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
1871 && !(flags & G_NODEBUG))
1872 PL_op->op_private |= OPpENTERSUB_DB;
1874 if (flags & G_METHOD) {
1875 Zero(&method_op, 1, UNOP);
1876 method_op.op_next = PL_op;
1877 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1878 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
1879 PL_op = (OP*)&method_op;
1882 if (!(flags & G_EVAL)) {
1884 call_body((OP*)&myop, FALSE);
1885 retval = PL_stack_sp - (PL_stack_base + oldmark);
1886 CATCH_SET(oldcatch);
1889 myop.op_other = (OP*)&myop;
1891 /* we're trying to emulate pp_entertry() here */
1893 register PERL_CONTEXT *cx;
1894 I32 gimme = GIMME_V;
1899 push_return(Nullop);
1900 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
1902 PL_eval_root = PL_op; /* Only needed so that goto works right. */
1904 PL_in_eval = EVAL_INEVAL;
1905 if (flags & G_KEEPERR)
1906 PL_in_eval |= EVAL_KEEPERR;
1912 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1914 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1921 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1923 call_body((OP*)&myop, FALSE);
1925 retval = PL_stack_sp - (PL_stack_base + oldmark);
1926 if (!(flags & G_KEEPERR))
1933 /* my_exit() was called */
1934 PL_curstash = PL_defstash;
1937 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1938 Perl_croak(aTHX_ "Callback called exit");
1943 PL_op = PL_restartop;
1947 PL_stack_sp = PL_stack_base + oldmark;
1948 if (flags & G_ARRAY)
1952 *++PL_stack_sp = &PL_sv_undef;
1957 if (PL_scopestack_ix > oldscope) {
1961 register PERL_CONTEXT *cx;
1973 if (flags & G_DISCARD) {
1974 PL_stack_sp = PL_stack_base + oldmark;
1983 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1985 S_vcall_body(pTHX_ va_list args)
1987 OP *myop = va_arg(args, OP*);
1988 int is_eval = va_arg(args, int);
1990 call_body(myop, is_eval);
1996 S_call_body(pTHX_ OP *myop, int is_eval)
1998 if (PL_op == myop) {
2000 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
2002 PL_op = Perl_pp_entersub(aTHX); /* this does */
2008 /* Eval a string. The G_EVAL flag is always assumed. */
2011 =for apidoc p||eval_sv
2013 Tells Perl to C<eval> the string in the SV.
2019 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
2021 /* See G_* flags in cop.h */
2024 UNOP myop; /* fake syntax tree node */
2025 volatile I32 oldmark = SP - PL_stack_base;
2026 volatile I32 retval = 0;
2032 if (flags & G_DISCARD) {
2039 Zero(PL_op, 1, UNOP);
2040 EXTEND(PL_stack_sp, 1);
2041 *++PL_stack_sp = sv;
2042 oldscope = PL_scopestack_ix;
2044 if (!(flags & G_NOARGS))
2045 myop.op_flags = OPf_STACKED;
2046 myop.op_next = Nullop;
2047 myop.op_type = OP_ENTEREVAL;
2048 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
2049 (flags & G_ARRAY) ? OPf_WANT_LIST :
2051 if (flags & G_KEEPERR)
2052 myop.op_flags |= OPf_SPECIAL;
2054 #ifdef PERL_FLEXIBLE_EXCEPTIONS
2056 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
2063 #ifndef PERL_FLEXIBLE_EXCEPTIONS
2065 call_body((OP*)&myop,TRUE);
2067 retval = PL_stack_sp - (PL_stack_base + oldmark);
2068 if (!(flags & G_KEEPERR))
2075 /* my_exit() was called */
2076 PL_curstash = PL_defstash;
2079 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
2080 Perl_croak(aTHX_ "Callback called exit");
2085 PL_op = PL_restartop;
2089 PL_stack_sp = PL_stack_base + oldmark;
2090 if (flags & G_ARRAY)
2094 *++PL_stack_sp = &PL_sv_undef;
2100 if (flags & G_DISCARD) {
2101 PL_stack_sp = PL_stack_base + oldmark;
2111 =for apidoc p||eval_pv
2113 Tells Perl to C<eval> the given string and return an SV* result.
2119 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
2122 SV* sv = newSVpv(p, 0);
2124 eval_sv(sv, G_SCALAR);
2131 if (croak_on_error && SvTRUE(ERRSV)) {
2133 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
2139 /* Require a module. */
2142 =head1 Embedding Functions
2144 =for apidoc p||require_pv
2146 Tells Perl to C<require> the file named by the string argument. It is
2147 analogous to the Perl code C<eval "require '$file'">. It's even
2148 implemented that way; consider using Perl_load_module instead.
2153 Perl_require_pv(pTHX_ const char *pv)
2157 PUSHSTACKi(PERLSI_REQUIRE);
2159 sv = sv_newmortal();
2160 sv_setpv(sv, "require '");
2163 eval_sv(sv, G_DISCARD);
2169 Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
2173 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
2174 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
2178 S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
2180 /* This message really ought to be max 23 lines.
2181 * Removed -h because the user already knows that option. Others? */
2183 static char *usage_msg[] = {
2184 "-0[octal] specify record separator (\\0, if no argument)",
2185 "-a autosplit mode with -n or -p (splits $_ into @F)",
2186 "-C enable native wide character system interfaces",
2187 "-c check syntax only (runs BEGIN and CHECK blocks)",
2188 "-d[:debugger] run program under debugger",
2189 "-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2190 "-e 'command' one line of program (several -e's allowed, omit programfile)",
2191 "-F/pattern/ split() pattern for -a switch (//'s are optional)",
2192 "-i[extension] edit <> files in place (makes backup if extension supplied)",
2193 "-Idirectory specify @INC/#include directory (several -I's allowed)",
2194 "-l[octal] enable line ending processing, specifies line terminator",
2195 "-[mM][-]module execute `use/no module...' before executing program",
2196 "-n assume 'while (<>) { ... }' loop around program",
2197 "-p assume loop like -n but print line also, like sed",
2198 "-P run program through C preprocessor before compilation",
2199 "-s enable rudimentary parsing for switches after programfile",
2200 "-S look for programfile using PATH environment variable",
2201 "-T enable tainting checks",
2202 "-t enable tainting warnings",
2203 "-u dump core after parsing program",
2204 "-U allow unsafe operations",
2205 "-v print version, subversion (includes VERY IMPORTANT perl info)",
2206 "-V[:variable] print configuration summary (or a single Config.pm variable)",
2207 "-w enable many useful warnings (RECOMMENDED)",
2208 "-W enable all warnings",
2209 "-X disable all warnings",
2210 "-x[directory] strip off text before #!perl line and perhaps cd to directory",
2214 char **p = usage_msg;
2216 PerlIO_printf(PerlIO_stdout(),
2217 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2220 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
2223 /* This routine handles any switches that can be given during run */
2226 Perl_moreswitches(pTHX_ char *s)
2236 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
2237 SvREFCNT_dec(PL_rs);
2238 if (rschar & ~((U8)~0))
2239 PL_rs = &PL_sv_undef;
2240 else if (!rschar && numlen >= 2)
2241 PL_rs = newSVpvn("", 0);
2244 PL_rs = newSVpvn(&ch, 1);
2249 PL_widesyscalls = TRUE;
2255 while (*s && !isSPACE(*s)) ++s;
2257 PL_splitstr = savepv(PL_splitstr);
2270 /* The following permits -d:Mod to accepts arguments following an =
2271 in the fashion that -MSome::Mod does. */
2272 if (*s == ':' || *s == '=') {
2275 sv = newSVpv("use Devel::", 0);
2277 /* We now allow -d:Module=Foo,Bar */
2278 while(isALNUM(*s) || *s==':') ++s;
2280 sv_catpv(sv, start);
2282 sv_catpvn(sv, start, s-start);
2283 sv_catpv(sv, " split(/,/,q{");
2288 my_setenv("PERL5DB", SvPV(sv, PL_na));
2291 PL_perldb = PERLDB_ALL;
2299 if (isALPHA(s[1])) {
2300 /* if adding extra options, remember to update DEBUG_MASK */
2301 static char debopts[] = "psltocPmfrxuLHXDSTRJ";
2304 for (s++; *s && (d = strchr(debopts,*s)); s++)
2305 PL_debug |= 1 << (d - debopts);
2308 PL_debug = atoi(s+1);
2309 for (s++; isDIGIT(*s); s++) ;
2312 if (DEBUG_p_TEST_ && ckWARN_d(WARN_DEBUGGING))
2313 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2314 "-Dp not implemented on this platform\n");
2316 PL_debug |= DEBUG_TOP_FLAG;
2317 #else /* !DEBUGGING */
2318 if (ckWARN_d(WARN_DEBUGGING))
2319 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2320 "Recompile perl with -DDEBUGGING to use -D switch\n");
2321 for (s++; isALNUM(*s); s++) ;
2327 usage(PL_origargv[0]);
2331 Safefree(PL_inplace);
2332 PL_inplace = savepv(s+1);
2334 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
2337 if (*s == '-') /* Additional switches on #! line. */
2341 case 'I': /* -I handled both here and in parse_body() */
2344 while (*s && isSPACE(*s))
2349 /* ignore trailing spaces (possibly followed by other switches) */
2351 for (e = p; *e && !isSPACE(*e); e++) ;
2355 } while (*p && *p != '-');
2356 e = savepvn(s, e-s);
2357 incpush(e, TRUE, TRUE);
2364 Perl_croak(aTHX_ "No directory specified for -I");
2370 SvREFCNT_dec(PL_ors_sv);
2375 PL_ors_sv = newSVpvn("\n",1);
2376 numlen = 3 + (*s == '0');
2377 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
2381 if (RsPARA(PL_rs)) {
2382 PL_ors_sv = newSVpvn("\n\n",2);
2385 PL_ors_sv = newSVsv(PL_rs);
2390 forbid_setid("-M"); /* XXX ? */
2393 forbid_setid("-m"); /* XXX ? */
2398 /* -M-foo == 'no foo' */
2399 if (*s == '-') { use = "no "; ++s; }
2400 sv = newSVpv(use,0);
2402 /* We allow -M'Module qw(Foo Bar)' */
2403 while(isALNUM(*s) || *s==':') ++s;
2405 sv_catpv(sv, start);
2406 if (*(start-1) == 'm') {
2408 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
2409 sv_catpv( sv, " ()");
2413 Perl_croak(aTHX_ "Module name required with -%c option",
2415 sv_catpvn(sv, start, s-start);
2416 sv_catpv(sv, " split(/,/,q{");
2422 PL_preambleav = newAV();
2423 av_push(PL_preambleav, sv);
2426 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
2438 PL_doswitches = TRUE;
2443 Perl_croak(aTHX_ "Too late for \"-t\" option");
2448 Perl_croak(aTHX_ "Too late for \"-T\" option");
2452 #ifdef MACOS_TRADITIONAL
2453 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2455 PL_do_undump = TRUE;
2464 PerlIO_printf(PerlIO_stdout(),
2465 Perl_form(aTHX_ "\nThis is perl, v%"VDf" built for %s",
2466 PL_patchlevel, ARCHNAME));
2468 /* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
2469 PerlIO_printf(PerlIO_stdout(),
2470 Perl_form(aTHX_ "\nThis is perl, version %vd\n", PL_patchlevel));
2471 PerlIO_printf(PerlIO_stdout(),
2472 Perl_form(aTHX_ " built under %s at %s %s\n",
2473 OSNAME, __DATE__, __TIME__));
2474 PerlIO_printf(PerlIO_stdout(),
2475 Perl_form(aTHX_ " OS Specific Release: %s\n",
2479 #if defined(LOCAL_PATCH_COUNT)
2480 if (LOCAL_PATCH_COUNT > 0)
2481 PerlIO_printf(PerlIO_stdout(),
2482 "\n(with %d registered patch%s, "
2483 "see perl -V for more detail)",
2484 (int)LOCAL_PATCH_COUNT,
2485 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
2488 PerlIO_printf(PerlIO_stdout(),
2489 "\n\nCopyright 1987-2002, Larry Wall\n");
2490 #ifdef MACOS_TRADITIONAL
2491 PerlIO_printf(PerlIO_stdout(),
2492 "\nMac OS port Copyright 1991-2002, Matthias Neeracher;\n"
2493 "maintained by Chris Nandor\n");
2496 PerlIO_printf(PerlIO_stdout(),
2497 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
2500 PerlIO_printf(PerlIO_stdout(),
2501 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2502 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
2505 PerlIO_printf(PerlIO_stdout(),
2506 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2507 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
2510 PerlIO_printf(PerlIO_stdout(),
2511 "atariST series port, ++jrb bammi@cadence.com\n");
2514 PerlIO_printf(PerlIO_stdout(),
2515 "BeOS port Copyright Tom Spindler, 1997-1999\n");
2518 PerlIO_printf(PerlIO_stdout(),
2519 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2002\n");
2522 PerlIO_printf(PerlIO_stdout(),
2523 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
2526 PerlIO_printf(PerlIO_stdout(),
2527 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
2530 PerlIO_printf(PerlIO_stdout(),
2531 "VM/ESA port by Neale Ferguson, 1998-1999\n");
2534 PerlIO_printf(PerlIO_stdout(),
2535 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
2538 PerlIO_printf(PerlIO_stdout(),
2539 "MiNT port by Guido Flohr, 1997-1999\n");
2542 PerlIO_printf(PerlIO_stdout(),
2543 "EPOC port by Olaf Flebbe, 1999-2002\n");
2546 printf("WINCE port by Rainer Keuchel, 2001-2002\n");
2547 printf("Built on " __DATE__ " " __TIME__ "\n\n");
2550 #ifdef BINARY_BUILD_NOTICE
2551 BINARY_BUILD_NOTICE;
2553 PerlIO_printf(PerlIO_stdout(),
2555 Perl may be copied only under the terms of either the Artistic License or the\n\
2556 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
2557 Complete documentation for Perl, including FAQ lists, should be found on\n\
2558 this system using `man perl' or `perldoc perl'. If you have access to the\n\
2559 Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
2562 if (! (PL_dowarn & G_WARN_ALL_MASK))
2563 PL_dowarn |= G_WARN_ON;
2567 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
2568 if (!specialWARN(PL_compiling.cop_warnings))
2569 SvREFCNT_dec(PL_compiling.cop_warnings);
2570 PL_compiling.cop_warnings = pWARN_ALL ;
2574 PL_dowarn = G_WARN_ALL_OFF;
2575 if (!specialWARN(PL_compiling.cop_warnings))
2576 SvREFCNT_dec(PL_compiling.cop_warnings);
2577 PL_compiling.cop_warnings = pWARN_NONE ;
2582 if (s[1] == '-') /* Additional switches on #! line. */
2587 #if defined(WIN32) || !defined(PERL_STRICT_CR)
2593 #ifdef ALTERNATE_SHEBANG
2594 case 'S': /* OS/2 needs -S on "extproc" line. */
2602 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
2607 /* compliments of Tom Christiansen */
2609 /* unexec() can be found in the Gnu emacs distribution */
2610 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
2613 Perl_my_unexec(pTHX)
2621 prog = newSVpv(BIN_EXP, 0);
2622 sv_catpv(prog, "/perl");
2623 file = newSVpv(PL_origfilename, 0);
2624 sv_catpv(file, ".perldump");
2626 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2627 /* unexec prints msg to stderr in case of failure */
2628 PerlProc_exit(status);
2631 # include <lib$routines.h>
2632 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
2634 ABORT(); /* for use with undump */
2639 /* initialize curinterp */
2645 # define PERLVAR(var,type)
2646 # define PERLVARA(var,n,type)
2647 # if defined(PERL_IMPLICIT_CONTEXT)
2648 # if defined(USE_5005THREADS)
2649 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2650 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2651 # else /* !USE_5005THREADS */
2652 # define PERLVARI(var,type,init) aTHX->var = init;
2653 # define PERLVARIC(var,type,init) aTHX->var = init;
2654 # endif /* USE_5005THREADS */
2656 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2657 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2659 # include "intrpvar.h"
2660 # ifndef USE_5005THREADS
2661 # include "thrdvar.h"
2668 # define PERLVAR(var,type)
2669 # define PERLVARA(var,n,type)
2670 # define PERLVARI(var,type,init) PL_##var = init;
2671 # define PERLVARIC(var,type,init) PL_##var = init;
2672 # include "intrpvar.h"
2673 # ifndef USE_5005THREADS
2674 # include "thrdvar.h"
2685 S_init_main_stash(pTHX)
2691 PL_curstash = PL_defstash = newHV();
2692 PL_curstname = newSVpvn("main",4);
2693 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2694 SvREFCNT_dec(GvHV(gv));
2695 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
2697 HvNAME(PL_defstash) = savepv("main");
2698 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2699 GvMULTI_on(PL_incgv);
2700 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2701 GvMULTI_on(PL_hintgv);
2702 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2703 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2704 GvMULTI_on(PL_errgv);
2705 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2706 GvMULTI_on(PL_replgv);
2707 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
2708 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2709 sv_setpvn(ERRSV, "", 0);
2710 PL_curstash = PL_defstash;
2711 CopSTASH_set(&PL_compiling, PL_defstash);
2712 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
2713 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
2714 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
2715 /* We must init $/ before switches are processed. */
2716 sv_setpvn(get_sv("/", TRUE), "\n", 1);
2720 S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
2724 char *cpp_discard_flag;
2730 PL_origfilename = savepv("-e");
2733 /* if find_script() returns, it returns a malloc()-ed value */
2734 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
2736 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2737 char *s = scriptname + 8;
2738 *fdscript = atoi(s);
2742 scriptname = savepv(s + 1);
2743 Safefree(PL_origfilename);
2744 PL_origfilename = scriptname;
2749 CopFILE_free(PL_curcop);
2750 CopFILE_set(PL_curcop, PL_origfilename);
2751 if (strEQ(PL_origfilename,"-"))
2753 if (*fdscript >= 0) {
2754 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
2755 # if defined(HAS_FCNTL) && defined(F_SETFD)
2757 /* ensure close-on-exec */
2758 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1);
2761 else if (PL_preprocess) {
2762 char *cpp_cfg = CPPSTDIN;
2763 SV *cpp = newSVpvn("",0);
2764 SV *cmd = NEWSV(0,0);
2766 if (strEQ(cpp_cfg, "cppstdin"))
2767 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
2768 sv_catpv(cpp, cpp_cfg);
2771 sv_catpvn(sv, "-I", 2);
2772 sv_catpv(sv,PRIVLIB_EXP);
2775 DEBUG_P(PerlIO_printf(Perl_debug_log,
2776 "PL_preprocess: scriptname=\"%s\", cpp=\"%s\", sv=\"%s\", CPPMINUS=\"%s\"\n",
2777 scriptname, SvPVX (cpp), SvPVX (sv), CPPMINUS));
2779 # if defined(MSDOS) || defined(WIN32) || defined(VMS)
2786 cpp_discard_flag = "";
2788 cpp_discard_flag = "-C";
2792 perl = os2_execname(aTHX);
2794 perl = PL_origargv[0];
2798 /* This strips off Perl comments which might interfere with
2799 the C pre-processor, including #!. #line directives are
2800 deliberately stripped to avoid confusion with Perl's version
2801 of #line. FWP played some golf with it so it will fit
2802 into VMS's 255 character buffer.
2805 code = "(1../^#!.*perl/i)|/^\\s*#(?!\\s*((ifn?|un)def|(el|end)?if|define|include|else|error|pragma)\\b)/||!($|=1)||print";
2807 code = "/^\\s*#(?!\\s*((ifn?|un)def|(el|end)?if|define|include|else|error|pragma)\\b)/||!($|=1)||print";
2809 Perl_sv_setpvf(aTHX_ cmd, "\
2810 %s -ne%s%s%s %s | %"SVf" %s %"SVf" %s",
2811 perl, quote, code, quote, scriptname, cpp,
2812 cpp_discard_flag, sv, CPPMINUS);
2814 PL_doextract = FALSE;
2815 # ifdef IAMSUID /* actually, this is caught earlier */
2816 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
2818 (void)seteuid(PL_uid); /* musn't stay setuid root */
2820 # ifdef HAS_SETREUID
2821 (void)setreuid((Uid_t)-1, PL_uid);
2823 # ifdef HAS_SETRESUID
2824 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
2826 PerlProc_setuid(PL_uid);
2830 if (PerlProc_geteuid() != PL_uid)
2831 Perl_croak(aTHX_ "Can't do seteuid!\n");
2833 # endif /* IAMSUID */
2835 DEBUG_P(PerlIO_printf(Perl_debug_log,
2836 "PL_preprocess: cmd=\"%s\"\n",
2839 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
2843 else if (!*scriptname) {
2844 forbid_setid("program input from stdin");
2845 PL_rsfp = PerlIO_stdin();
2848 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
2849 # if defined(HAS_FCNTL) && defined(F_SETFD)
2851 /* ensure close-on-exec */
2852 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1);
2857 # ifndef IAMSUID /* in case script is not readable before setuid */
2859 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
2860 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2863 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT,
2864 BIN_EXP, (int)PERL_REVISION,
2866 (int)PERL_SUBVERSION), PL_origargv);
2867 Perl_croak(aTHX_ "Can't do setuid\n");
2873 Perl_croak(aTHX_ "Can't open perl script: %s\n",
2876 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
2877 CopFILE(PL_curcop), Strerror(errno));
2883 * I_SYSSTATVFS HAS_FSTATVFS
2885 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
2886 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2887 * here so that metaconfig picks them up. */
2891 S_fd_on_nosuid_fs(pTHX_ int fd)
2893 int check_okay = 0; /* able to do all the required sys/libcalls */
2894 int on_nosuid = 0; /* the fd is on a nosuid fs */
2896 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
2897 * fstatvfs() is UNIX98.
2898 * fstatfs() is 4.3 BSD.
2899 * ustat()+getmnt() is pre-4.3 BSD.
2900 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2901 * an irrelevant filesystem while trying to reach the right one.
2904 #undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2906 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2907 defined(HAS_FSTATVFS)
2908 # define FD_ON_NOSUID_CHECK_OKAY
2909 struct statvfs stfs;
2911 check_okay = fstatvfs(fd, &stfs) == 0;
2912 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
2913 # endif /* fstatvfs */
2915 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2916 defined(PERL_MOUNT_NOSUID) && \
2917 defined(HAS_FSTATFS) && \
2918 defined(HAS_STRUCT_STATFS) && \
2919 defined(HAS_STRUCT_STATFS_F_FLAGS)
2920 # define FD_ON_NOSUID_CHECK_OKAY
2923 check_okay = fstatfs(fd, &stfs) == 0;
2924 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
2925 # endif /* fstatfs */
2927 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2928 defined(PERL_MOUNT_NOSUID) && \
2929 defined(HAS_FSTAT) && \
2930 defined(HAS_USTAT) && \
2931 defined(HAS_GETMNT) && \
2932 defined(HAS_STRUCT_FS_DATA) && \
2934 # define FD_ON_NOSUID_CHECK_OKAY
2937 if (fstat(fd, &fdst) == 0) {
2939 if (ustat(fdst.st_dev, &us) == 0) {
2941 /* NOSTAT_ONE here because we're not examining fields which
2942 * vary between that case and STAT_ONE. */
2943 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
2944 size_t cmplen = sizeof(us.f_fname);
2945 if (sizeof(fsd.fd_req.path) < cmplen)
2946 cmplen = sizeof(fsd.fd_req.path);
2947 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2948 fdst.st_dev == fsd.fd_req.dev) {
2950 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2956 # endif /* fstat+ustat+getmnt */
2958 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2959 defined(HAS_GETMNTENT) && \
2960 defined(HAS_HASMNTOPT) && \
2961 defined(MNTOPT_NOSUID)
2962 # define FD_ON_NOSUID_CHECK_OKAY
2963 FILE *mtab = fopen("/etc/mtab", "r");
2964 struct mntent *entry;
2965 struct stat stb, fsb;
2967 if (mtab && (fstat(fd, &stb) == 0)) {
2968 while (entry = getmntent(mtab)) {
2969 if (stat(entry->mnt_dir, &fsb) == 0
2970 && fsb.st_dev == stb.st_dev)
2972 /* found the filesystem */
2974 if (hasmntopt(entry, MNTOPT_NOSUID))
2977 } /* A single fs may well fail its stat(). */
2982 # endif /* getmntent+hasmntopt */
2985 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
2988 #endif /* IAMSUID */
2991 S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
2997 /* do we need to emulate setuid on scripts? */
2999 /* This code is for those BSD systems that have setuid #! scripts disabled
3000 * in the kernel because of a security problem. Merely defining DOSUID
3001 * in perl will not fix that problem, but if you have disabled setuid
3002 * scripts in the kernel, this will attempt to emulate setuid and setgid
3003 * on scripts that have those now-otherwise-useless bits set. The setuid
3004 * root version must be called suidperl or sperlN.NNN. If regular perl
3005 * discovers that it has opened a setuid script, it calls suidperl with
3006 * the same argv that it had. If suidperl finds that the script it has
3007 * just opened is NOT setuid root, it sets the effective uid back to the
3008 * uid. We don't just make perl setuid root because that loses the
3009 * effective uid we had before invoking perl, if it was different from the
3012 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
3013 * be defined in suidperl only. suidperl must be setuid root. The
3014 * Configure script will set this up for you if you want it.
3020 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
3021 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
3022 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
3027 #ifndef HAS_SETREUID
3028 /* On this access check to make sure the directories are readable,
3029 * there is actually a small window that the user could use to make
3030 * filename point to an accessible directory. So there is a faint
3031 * chance that someone could execute a setuid script down in a
3032 * non-accessible directory. I don't know what to do about that.
3033 * But I don't think it's too important. The manual lies when
3034 * it says access() is useful in setuid programs.
3036 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
3037 Perl_croak(aTHX_ "Permission denied");
3039 /* If we can swap euid and uid, then we can determine access rights
3040 * with a simple stat of the file, and then compare device and
3041 * inode to make sure we did stat() on the same file we opened.
3042 * Then we just have to make sure he or she can execute it.
3045 struct stat tmpstatbuf;
3049 setreuid(PL_euid,PL_uid) < 0
3052 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
3055 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
3056 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
3057 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
3058 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
3059 #if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
3060 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
3061 Perl_croak(aTHX_ "Permission denied");
3063 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
3064 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
3065 (void)PerlIO_close(PL_rsfp);
3066 Perl_croak(aTHX_ "Permission denied\n");
3070 setreuid(PL_uid,PL_euid) < 0
3072 # if defined(HAS_SETRESUID)
3073 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
3076 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
3077 Perl_croak(aTHX_ "Can't reswap uid and euid");
3078 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
3079 Perl_croak(aTHX_ "Permission denied\n");
3081 #endif /* HAS_SETREUID */
3082 #endif /* IAMSUID */
3084 if (!S_ISREG(PL_statbuf.st_mode))
3085 Perl_croak(aTHX_ "Permission denied");
3086 if (PL_statbuf.st_mode & S_IWOTH)
3087 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
3088 PL_doswitches = FALSE; /* -s is insecure in suid */
3089 CopLINE_inc(PL_curcop);
3090 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
3091 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
3092 Perl_croak(aTHX_ "No #! line");
3093 s = SvPV(PL_linestr,n_a)+2;
3095 while (!isSPACE(*s)) s++;
3096 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
3097 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
3098 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
3099 Perl_croak(aTHX_ "Not a perl script");
3100 while (*s == ' ' || *s == '\t') s++;
3102 * #! arg must be what we saw above. They can invoke it by
3103 * mentioning suidperl explicitly, but they may not add any strange
3104 * arguments beyond what #! says if they do invoke suidperl that way.
3106 len = strlen(validarg);
3107 if (strEQ(validarg," PHOOEY ") ||
3108 strnNE(s,validarg,len) || !isSPACE(s[len]))
3109 Perl_croak(aTHX_ "Args must match #! line");
3112 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
3113 PL_euid == PL_statbuf.st_uid)
3115 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3116 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3117 #endif /* IAMSUID */
3119 if (PL_euid) { /* oops, we're not the setuid root perl */
3120 (void)PerlIO_close(PL_rsfp);
3123 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
3124 (int)PERL_REVISION, (int)PERL_VERSION,
3125 (int)PERL_SUBVERSION), PL_origargv);
3127 Perl_croak(aTHX_ "Can't do setuid\n");
3130 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
3132 (void)setegid(PL_statbuf.st_gid);
3135 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
3137 #ifdef HAS_SETRESGID
3138 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
3140 PerlProc_setgid(PL_statbuf.st_gid);
3144 if (PerlProc_getegid() != PL_statbuf.st_gid)
3145 Perl_croak(aTHX_ "Can't do setegid!\n");
3147 if (PL_statbuf.st_mode & S_ISUID) {
3148 if (PL_statbuf.st_uid != PL_euid)
3150 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
3153 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
3155 #ifdef HAS_SETRESUID
3156 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
3158 PerlProc_setuid(PL_statbuf.st_uid);
3162 if (PerlProc_geteuid() != PL_statbuf.st_uid)
3163 Perl_croak(aTHX_ "Can't do seteuid!\n");
3165 else if (PL_uid) { /* oops, mustn't run as root */
3167 (void)seteuid((Uid_t)PL_uid);
3170 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
3172 #ifdef HAS_SETRESUID
3173 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
3175 PerlProc_setuid((Uid_t)PL_uid);
3179 if (PerlProc_geteuid() != PL_uid)
3180 Perl_croak(aTHX_ "Can't do seteuid!\n");
3183 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
3184 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
3187 else if (PL_preprocess)
3188 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
3189 else if (fdscript >= 0)
3190 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
3192 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
3194 /* We absolutely must clear out any saved ids here, so we */
3195 /* exec the real perl, substituting fd script for scriptname. */
3196 /* (We pass script name as "subdir" of fd, which perl will grok.) */
3197 PerlIO_rewind(PL_rsfp);
3198 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
3199 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3200 if (!PL_origargv[which])
3201 Perl_croak(aTHX_ "Permission denied");
3202 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
3203 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
3204 #if defined(HAS_FCNTL) && defined(F_SETFD)
3205 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
3207 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
3208 (int)PERL_REVISION, (int)PERL_VERSION,
3209 (int)PERL_SUBVERSION), PL_origargv);/* try again */
3210 Perl_croak(aTHX_ "Can't do setuid\n");
3211 #endif /* IAMSUID */
3213 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
3214 #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
3215 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3216 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3218 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3221 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3222 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3223 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3224 /* not set-id, must be wrapped */
3230 S_find_beginning(pTHX)
3232 register char *s, *s2;
3234 /* skip forward in input to the real script? */
3237 #ifdef MACOS_TRADITIONAL
3238 /* Since the Mac OS does not honor #! arguments for us, we do it ourselves */
3240 while (PL_doextract || gMacPerl_AlwaysExtract) {
3241 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3242 if (!gMacPerl_AlwaysExtract)
3243 Perl_croak(aTHX_ "No Perl script found in input\n");
3245 if (PL_doextract) /* require explicit override ? */
3246 if (!OverrideExtract(PL_origfilename))
3247 Perl_croak(aTHX_ "User aborted script\n");
3249 PL_doextract = FALSE;
3251 /* Pater peccavi, file does not have #! */
3252 PerlIO_rewind(PL_rsfp);
3257 while (PL_doextract) {
3258 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
3259 Perl_croak(aTHX_ "No Perl script found in input\n");
3262 if (*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))) {
3263 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3264 PL_doextract = FALSE;
3265 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3267 while (*s == ' ' || *s == '\t') s++;
3269 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3270 if (strnEQ(s2-4,"perl",4))
3272 while ((s = moreswitches(s)))
3275 #ifdef MACOS_TRADITIONAL
3286 PL_uid = PerlProc_getuid();
3287 PL_euid = PerlProc_geteuid();
3288 PL_gid = PerlProc_getgid();
3289 PL_egid = PerlProc_getegid();
3291 PL_uid |= PL_gid << 16;
3292 PL_euid |= PL_egid << 16;
3294 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3298 S_forbid_setid(pTHX_ char *s)
3300 if (PL_euid != PL_uid)
3301 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3302 if (PL_egid != PL_gid)
3303 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
3307 Perl_init_debugger(pTHX)
3309 HV *ostash = PL_curstash;
3311 PL_curstash = PL_debstash;
3312 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3313 AvREAL_off(PL_dbargs);
3314 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3315 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3316 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
3317 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3318 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
3319 sv_setiv(PL_DBsingle, 0);
3320 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
3321 sv_setiv(PL_DBtrace, 0);
3322 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
3323 sv_setiv(PL_DBsignal, 0);
3324 PL_curstash = ostash;
3327 #ifndef STRESS_REALLOC
3328 #define REASONABLE(size) (size)
3330 #define REASONABLE(size) (1) /* unreasonable */
3334 Perl_init_stacks(pTHX)
3336 /* start with 128-item stack and 8K cxstack */
3337 PL_curstackinfo = new_stackinfo(REASONABLE(128),
3338 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3339 PL_curstackinfo->si_type = PERLSI_MAIN;
3340 PL_curstack = PL_curstackinfo->si_stack;
3341 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
3343 PL_stack_base = AvARRAY(PL_curstack);
3344 PL_stack_sp = PL_stack_base;
3345 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
3347 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3350 PL_tmps_max = REASONABLE(128);
3352 New(54,PL_markstack,REASONABLE(32),I32);
3353 PL_markstack_ptr = PL_markstack;
3354 PL_markstack_max = PL_markstack + REASONABLE(32);
3358 New(54,PL_scopestack,REASONABLE(32),I32);
3359 PL_scopestack_ix = 0;
3360 PL_scopestack_max = REASONABLE(32);
3362 New(54,PL_savestack,REASONABLE(128),ANY);
3363 PL_savestack_ix = 0;
3364 PL_savestack_max = REASONABLE(128);
3366 New(54,PL_retstack,REASONABLE(16),OP*);
3368 PL_retstack_max = REASONABLE(16);
3376 while (PL_curstackinfo->si_next)
3377 PL_curstackinfo = PL_curstackinfo->si_next;
3378 while (PL_curstackinfo) {
3379 PERL_SI *p = PL_curstackinfo->si_prev;
3380 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3381 Safefree(PL_curstackinfo->si_cxstack);
3382 Safefree(PL_curstackinfo);
3383 PL_curstackinfo = p;
3385 Safefree(PL_tmps_stack);
3386 Safefree(PL_markstack);
3387 Safefree(PL_scopestack);
3388 Safefree(PL_savestack);
3389 Safefree(PL_retstack);
3398 lex_start(PL_linestr);
3400 PL_subname = newSVpvn("main",4);
3404 S_init_predump_symbols(pTHX)
3409 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3410 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3411 GvMULTI_on(PL_stdingv);
3412 io = GvIOp(PL_stdingv);
3413 IoTYPE(io) = IoTYPE_RDONLY;
3414 IoIFP(io) = PerlIO_stdin();
3415 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
3417 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3419 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
3422 IoTYPE(io) = IoTYPE_WRONLY;
3423 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
3425 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
3427 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3429 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3430 GvMULTI_on(PL_stderrgv);
3431 io = GvIOp(PL_stderrgv);
3432 IoTYPE(io) = IoTYPE_WRONLY;
3433 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
3434 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
3436 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3438 PL_statname = NEWSV(66,0); /* last filename we did stat on */
3441 Safefree(PL_osname);
3442 PL_osname = savepv(OSNAME);
3446 Perl_init_argv_symbols(pTHX_ register int argc, register char **argv)
3449 argc--,argv++; /* skip name of script */
3450 if (PL_doswitches) {
3451 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3454 if (argv[0][1] == '-' && !argv[0][2]) {
3458 if ((s = strchr(argv[0], '='))) {
3460 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
3463 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
3466 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3467 GvMULTI_on(PL_argvgv);
3468 (void)gv_AVadd(PL_argvgv);
3469 av_clear(GvAVn(PL_argvgv));
3470 for (; argc > 0; argc--,argv++) {
3471 SV *sv = newSVpv(argv[0],0);
3472 av_push(GvAVn(PL_argvgv),sv);
3473 if (PL_widesyscalls)
3474 (void)sv_utf8_decode(sv);
3479 #ifdef HAS_PROCSELFEXE
3480 /* This is a function so that we don't hold on to MAXPATHLEN
3481 bytes of stack longer than necessary
3484 S_procself_val(pTHX_ SV *sv, char *arg0)
3486 char buf[MAXPATHLEN];
3487 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
3488 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
3489 returning the text "unknown" from the readlink rather than the path
3490 to the executable (or returning an error from the readlink). Any valid
3491 path has a '/' in it somewhere, so use that to validate the result.
3492 See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
3494 if (len > 0 && memchr(buf, '/', len)) {
3495 sv_setpvn(sv,buf,len);
3501 #endif /* HAS_PROCSELFEXE */
3504 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
3510 PL_toptarget = NEWSV(0,0);
3511 sv_upgrade(PL_toptarget, SVt_PVFM);
3512 sv_setpvn(PL_toptarget, "", 0);
3513 PL_bodytarget = NEWSV(0,0);
3514 sv_upgrade(PL_bodytarget, SVt_PVFM);
3515 sv_setpvn(PL_bodytarget, "", 0);
3516 PL_formtarget = PL_bodytarget;
3520 init_argv_symbols(argc,argv);
3522 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
3523 #ifdef MACOS_TRADITIONAL
3524 /* $0 is not majick on a Mac */
3525 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3527 sv_setpv(GvSV(tmpgv),PL_origfilename);
3528 magicname("0", "0", 1);
3531 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV))) {/* $^X */
3532 #ifdef HAS_PROCSELFEXE
3533 S_procself_val(aTHX_ GvSV(tmpgv), PL_origargv[0]);
3536 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
3538 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
3542 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
3544 GvMULTI_on(PL_envgv);
3545 hv = GvHVn(PL_envgv);
3546 hv_magic(hv, Nullgv, PERL_MAGIC_env);
3547 #ifdef USE_ENVIRON_ARRAY
3548 /* Note that if the supplied env parameter is actually a copy
3549 of the global environ then it may now point to free'd memory
3550 if the environment has been modified since. To avoid this
3551 problem we treat env==NULL as meaning 'use the default'
3556 environ[0] = Nullch;
3558 for (; *env; env++) {
3559 if (!(s = strchr(*env,'=')))
3566 sv = newSVpv(s+1, 0);
3567 (void)hv_store(hv, *env, s - *env, sv, 0);
3571 #endif /* USE_ENVIRON_ARRAY */
3574 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV))) {
3575 SvREADONLY_off(GvSV(tmpgv));
3576 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
3577 SvREADONLY_on(GvSV(tmpgv));
3582 S_init_perllib(pTHX)
3587 s = PerlEnv_getenv("PERL5LIB");
3589 incpush(s, TRUE, TRUE);
3591 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE);
3593 /* Treat PERL5?LIB as a possible search list logical name -- the
3594 * "natural" VMS idiom for a Unix path string. We allow each
3595 * element to be a set of |-separated directories for compatibility.
3599 if (my_trnlnm("PERL5LIB",buf,0))
3600 do { incpush(buf,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
3602 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE);
3606 /* Use the ~-expanded versions of APPLLIB (undocumented),
3607 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
3610 incpush(APPLLIB_EXP, TRUE, TRUE);
3614 incpush(ARCHLIB_EXP, FALSE, FALSE);
3616 #ifdef MACOS_TRADITIONAL
3618 struct stat tmpstatbuf;
3619 SV * privdir = NEWSV(55, 0);
3620 char * macperl = PerlEnv_getenv("MACPERL");
3625 Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl);
3626 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3627 incpush(SvPVX(privdir), TRUE, FALSE);
3628 Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl);
3629 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3630 incpush(SvPVX(privdir), TRUE, FALSE);
3632 SvREFCNT_dec(privdir);
3635 incpush(":", FALSE, FALSE);
3638 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
3641 incpush(PRIVLIB_EXP, TRUE, FALSE);
3643 incpush(PRIVLIB_EXP, FALSE, FALSE);
3647 /* sitearch is always relative to sitelib on Windows for
3648 * DLL-based path intuition to work correctly */
3649 # if !defined(WIN32)
3650 incpush(SITEARCH_EXP, FALSE, FALSE);
3656 incpush(SITELIB_EXP, TRUE, FALSE); /* this picks up sitearch as well */
3658 incpush(SITELIB_EXP, FALSE, FALSE);
3662 #ifdef SITELIB_STEM /* Search for version-specific dirs below here */
3663 incpush(SITELIB_STEM, FALSE, TRUE);
3666 #ifdef PERL_VENDORARCH_EXP
3667 /* vendorarch is always relative to vendorlib on Windows for
3668 * DLL-based path intuition to work correctly */
3669 # if !defined(WIN32)
3670 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE);
3674 #ifdef PERL_VENDORLIB_EXP
3676 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE); /* this picks up vendorarch as well */
3678 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE);
3682 #ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
3683 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE);
3686 #ifdef PERL_OTHERLIBDIRS
3687 incpush(PERL_OTHERLIBDIRS, TRUE, TRUE);
3691 incpush(".", FALSE, FALSE);
3692 #endif /* MACOS_TRADITIONAL */
3695 #if defined(DOSISH) || defined(EPOC)
3696 # define PERLLIB_SEP ';'
3699 # define PERLLIB_SEP '|'
3701 # if defined(MACOS_TRADITIONAL)
3702 # define PERLLIB_SEP ','
3704 # define PERLLIB_SEP ':'
3708 #ifndef PERLLIB_MANGLE
3709 # define PERLLIB_MANGLE(s,n) (s)
3713 S_incpush(pTHX_ char *p, int addsubdirs, int addoldvers)
3715 SV *subdir = Nullsv;
3720 if (addsubdirs || addoldvers) {
3721 subdir = sv_newmortal();
3724 /* Break at all separators */
3726 SV *libdir = NEWSV(55,0);
3729 /* skip any consecutive separators */
3730 while ( *p == PERLLIB_SEP ) {
3731 /* Uncomment the next line for PATH semantics */
3732 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
3736 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
3737 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
3742 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
3743 p = Nullch; /* break out */
3745 #ifdef MACOS_TRADITIONAL
3746 if (!strchr(SvPVX(libdir), ':'))
3747 sv_insert(libdir, 0, 0, ":", 1);
3748 if (SvPVX(libdir)[SvCUR(libdir)-1] != ':')
3749 sv_catpv(libdir, ":");
3753 * BEFORE pushing libdir onto @INC we may first push version- and
3754 * archname-specific sub-directories.
3756 if (addsubdirs || addoldvers) {
3757 #ifdef PERL_INC_VERSION_LIST
3758 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
3759 const char *incverlist[] = { PERL_INC_VERSION_LIST };
3760 const char **incver;
3762 struct stat tmpstatbuf;
3767 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
3769 while (unix[len-1] == '/') len--; /* Cosmetic */
3770 sv_usepvn(libdir,unix,len);
3773 PerlIO_printf(Perl_error_log,
3774 "Failed to unixify @INC element \"%s\"\n",
3778 #ifdef MACOS_TRADITIONAL
3779 #define PERL_AV_SUFFIX_FMT ""
3780 #define PERL_ARCH_FMT "%s:"
3781 #define PERL_ARCH_FMT_PATH PERL_FS_VER_FMT PERL_AV_SUFFIX_FMT
3783 #define PERL_AV_SUFFIX_FMT "/"
3784 #define PERL_ARCH_FMT "/%s"
3785 #define PERL_ARCH_FMT_PATH PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT
3787 /* .../version/archname if -d .../version/archname */
3788 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH PERL_ARCH_FMT,
3790 (int)PERL_REVISION, (int)PERL_VERSION,
3791 (int)PERL_SUBVERSION, ARCHNAME);
3792 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3793 S_ISDIR(tmpstatbuf.st_mode))
3794 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3796 /* .../version if -d .../version */
3797 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH, libdir,
3798 (int)PERL_REVISION, (int)PERL_VERSION,
3799 (int)PERL_SUBVERSION);
3800 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3801 S_ISDIR(tmpstatbuf.st_mode))
3802 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3804 /* .../archname if -d .../archname */
3805 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, ARCHNAME);
3806 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3807 S_ISDIR(tmpstatbuf.st_mode))
3808 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3811 #ifdef PERL_INC_VERSION_LIST
3813 for (incver = incverlist; *incver; incver++) {
3814 /* .../xxx if -d .../xxx */
3815 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, *incver);
3816 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3817 S_ISDIR(tmpstatbuf.st_mode))
3818 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3824 /* finally push this lib directory on the end of @INC */
3825 av_push(GvAVn(PL_incgv), libdir);
3829 #ifdef USE_5005THREADS
3830 STATIC struct perl_thread *
3831 S_init_main_thread(pTHX)
3833 #if !defined(PERL_IMPLICIT_CONTEXT)
3834 struct perl_thread *thr;
3838 Newz(53, thr, 1, struct perl_thread);
3839 PL_curcop = &PL_compiling;
3840 thr->interp = PERL_GET_INTERP;
3841 thr->cvcache = newHV();
3842 thr->threadsv = newAV();
3843 /* thr->threadsvp is set when find_threadsv is called */
3844 thr->specific = newAV();
3845 thr->flags = THRf_R_JOINABLE;
3846 MUTEX_INIT(&thr->mutex);
3847 /* Handcraft thrsv similarly to mess_sv */
3848 New(53, PL_thrsv, 1, SV);
3849 Newz(53, xpv, 1, XPV);
3850 SvFLAGS(PL_thrsv) = SVt_PV;
3851 SvANY(PL_thrsv) = (void*)xpv;
3852 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
3853 SvPVX(PL_thrsv) = (char*)thr;
3854 SvCUR_set(PL_thrsv, sizeof(thr));
3855 SvLEN_set(PL_thrsv, sizeof(thr));
3856 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
3857 thr->oursv = PL_thrsv;
3858 PL_chopset = " \n-";
3861 MUTEX_LOCK(&PL_threads_mutex);
3867 MUTEX_UNLOCK(&PL_threads_mutex);
3869 #ifdef HAVE_THREAD_INTERN
3870 Perl_init_thread_intern(thr);
3873 #ifdef SET_THREAD_SELF
3874 SET_THREAD_SELF(thr);
3876 thr->self = pthread_self();
3877 #endif /* SET_THREAD_SELF */
3881 * These must come after the thread self setting
3882 * because sv_setpvn does SvTAINT and the taint
3883 * fields thread selfness being set.
3885 PL_toptarget = NEWSV(0,0);
3886 sv_upgrade(PL_toptarget, SVt_PVFM);
3887 sv_setpvn(PL_toptarget, "", 0);
3888 PL_bodytarget = NEWSV(0,0);
3889 sv_upgrade(PL_bodytarget, SVt_PVFM);
3890 sv_setpvn(PL_bodytarget, "", 0);
3891 PL_formtarget = PL_bodytarget;
3892 thr->errsv = newSVpvn("", 0);
3893 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
3896 PL_peepp = MEMBER_TO_FPTR(Perl_peep);
3897 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3898 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3899 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3900 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3901 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
3903 PL_reginterp_cnt = 0;
3907 #endif /* USE_5005THREADS */
3910 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
3913 line_t oldline = CopLINE(PL_curcop);
3919 while (AvFILL(paramList) >= 0) {
3920 cv = (CV*)av_shift(paramList);
3921 if (PL_savebegin && (paramList == PL_beginav)) {
3922 /* save PL_beginav for compiler */
3923 if (! PL_beginav_save)
3924 PL_beginav_save = newAV();
3925 av_push(PL_beginav_save, (SV*)cv);
3929 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3930 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_list_body), cv);
3936 #ifndef PERL_FLEXIBLE_EXCEPTIONS
3940 (void)SvPV(atsv, len);
3943 PL_curcop = &PL_compiling;
3944 CopLINE_set(PL_curcop, oldline);
3945 if (paramList == PL_beginav)
3946 sv_catpv(atsv, "BEGIN failed--compilation aborted");
3948 Perl_sv_catpvf(aTHX_ atsv,
3949 "%s failed--call queue aborted",
3950 paramList == PL_checkav ? "CHECK"
3951 : paramList == PL_initav ? "INIT"
3953 while (PL_scopestack_ix > oldscope)
3956 Perl_croak(aTHX_ "%s", SvPVx(atsv, n_a));
3963 /* my_exit() was called */
3964 while (PL_scopestack_ix > oldscope)
3967 PL_curstash = PL_defstash;
3968 PL_curcop = &PL_compiling;
3969 CopLINE_set(PL_curcop, oldline);
3971 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
3972 if (paramList == PL_beginav)
3973 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
3975 Perl_croak(aTHX_ "%s failed--call queue aborted",
3976 paramList == PL_checkav ? "CHECK"
3977 : paramList == PL_initav ? "INIT"
3984 PL_curcop = &PL_compiling;
3985 CopLINE_set(PL_curcop, oldline);
3988 PerlIO_printf(Perl_error_log, "panic: restartop\n");
3996 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3998 S_vcall_list_body(pTHX_ va_list args)
4000 CV *cv = va_arg(args, CV*);
4001 return call_list_body(cv);
4006 S_call_list_body(pTHX_ CV *cv)
4008 PUSHMARK(PL_stack_sp);
4009 call_sv((SV*)cv, G_EVAL|G_DISCARD);
4014 Perl_my_exit(pTHX_ U32 status)
4016 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
4017 thr, (unsigned long) status));
4026 STATUS_NATIVE_SET(status);
4033 Perl_my_failure_exit(pTHX)
4036 if (vaxc$errno & 1) {
4037 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
4038 STATUS_NATIVE_SET(44);
4041 if (!vaxc$errno && errno) /* unlikely */
4042 STATUS_NATIVE_SET(44);
4044 STATUS_NATIVE_SET(vaxc$errno);
4049 STATUS_POSIX_SET(errno);
4051 exitstatus = STATUS_POSIX >> 8;
4052 if (exitstatus & 255)
4053 STATUS_POSIX_SET(exitstatus);
4055 STATUS_POSIX_SET(255);
4062 S_my_exit_jump(pTHX)
4064 register PERL_CONTEXT *cx;
4069 SvREFCNT_dec(PL_e_script);
4070 PL_e_script = Nullsv;
4073 POPSTACK_TO(PL_mainstack);
4074 if (cxstack_ix >= 0) {
4077 POPBLOCK(cx,PL_curpm);
4085 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen)
4088 p = SvPVX(PL_e_script);
4089 nl = strchr(p, '\n');
4090 nl = (nl) ? nl+1 : SvEND(PL_e_script);
4092 filter_del(read_e_script);
4095 sv_catpvn(buf_sv, p, nl-p);
4096 sv_chop(PL_e_script, nl);