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);
262 PL_regex_padav = newAV();
263 av_push(PL_regex_padav,(SV*)newAV()); /* First entry is an array of empty elements */
264 PL_regex_pad = AvARRAY(PL_regex_padav);
266 #ifdef USE_REENTRANT_API
267 Perl_reentrant_init(aTHX);
270 /* Note that strtab is a rather special HV. Assumptions are made
271 about not iterating on it, and not adding tie magic to it.
272 It is properly deallocated in perl_destruct() */
275 #ifdef USE_5005THREADS
276 MUTEX_INIT(&PL_strtab_mutex);
278 HvSHAREKEYS_off(PL_strtab); /* mandatory */
279 hv_ksplit(PL_strtab, 512);
281 #if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
282 _dyld_lookup_and_bind
283 ("__environ", (unsigned long *) &environ_pointer, NULL);
286 #ifdef USE_ENVIRON_ARRAY
287 PL_origenviron = environ;
294 =for apidoc perl_destruct
296 Shuts down a Perl interpreter. See L<perlembed>.
304 volatile int destruct_level; /* 0=none, 1=full, 2=full with checks */
306 #ifdef USE_5005THREADS
309 #endif /* USE_5005THREADS */
311 /* wait for all pseudo-forked children to finish */
312 PERL_WAIT_FOR_CHILDREN;
314 #ifdef USE_5005THREADS
316 /* Pass 1 on any remaining threads: detach joinables, join zombies */
318 MUTEX_LOCK(&PL_threads_mutex);
319 DEBUG_S(PerlIO_printf(Perl_debug_log,
320 "perl_destruct: waiting for %d threads...\n",
322 for (t = thr->next; t != thr; t = t->next) {
323 MUTEX_LOCK(&t->mutex);
324 switch (ThrSTATE(t)) {
327 DEBUG_S(PerlIO_printf(Perl_debug_log,
328 "perl_destruct: joining zombie %p\n", t));
329 ThrSETSTATE(t, THRf_DEAD);
330 MUTEX_UNLOCK(&t->mutex);
333 * The SvREFCNT_dec below may take a long time (e.g. av
334 * may contain an object scalar whose destructor gets
335 * called) so we have to unlock threads_mutex and start
338 MUTEX_UNLOCK(&PL_threads_mutex);
340 SvREFCNT_dec((SV*)av);
341 DEBUG_S(PerlIO_printf(Perl_debug_log,
342 "perl_destruct: joined zombie %p OK\n", t));
344 case THRf_R_JOINABLE:
345 DEBUG_S(PerlIO_printf(Perl_debug_log,
346 "perl_destruct: detaching thread %p\n", t));
347 ThrSETSTATE(t, THRf_R_DETACHED);
349 * We unlock threads_mutex and t->mutex in the opposite order
350 * from which we locked them just so that DETACH won't
351 * deadlock if it panics. It's only a breach of good style
352 * not a bug since they are unlocks not locks.
354 MUTEX_UNLOCK(&PL_threads_mutex);
356 MUTEX_UNLOCK(&t->mutex);
359 DEBUG_S(PerlIO_printf(Perl_debug_log,
360 "perl_destruct: ignoring %p (state %u)\n",
362 MUTEX_UNLOCK(&t->mutex);
363 /* fall through and out */
366 /* We leave the above "Pass 1" loop with threads_mutex still locked */
368 /* Pass 2 on remaining threads: wait for the thread count to drop to one */
369 while (PL_nthreads > 1)
371 DEBUG_S(PerlIO_printf(Perl_debug_log,
372 "perl_destruct: final wait for %d threads\n",
374 COND_WAIT(&PL_nthreads_cond, &PL_threads_mutex);
376 /* At this point, we're the last thread */
377 MUTEX_UNLOCK(&PL_threads_mutex);
378 DEBUG_S(PerlIO_printf(Perl_debug_log, "perl_destruct: armageddon has arrived\n"));
379 MUTEX_DESTROY(&PL_threads_mutex);
380 COND_DESTROY(&PL_nthreads_cond);
382 #endif /* !defined(FAKE_THREADS) */
383 #endif /* USE_5005THREADS */
385 destruct_level = PL_perl_destruct_level;
389 if ((s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL"))) {
391 if (destruct_level < i)
398 if(PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
403 if (PL_endav && !PL_minus_c)
404 call_list(PL_scopestack_ix, PL_endav);
410 /* We must account for everything. */
412 /* Destroy the main CV and syntax tree */
414 PL_curpad = AvARRAY(PL_comppad);
415 op_free(PL_main_root);
416 PL_main_root = Nullop;
418 PL_curcop = &PL_compiling;
419 PL_main_start = Nullop;
420 SvREFCNT_dec(PL_main_cv);
424 /* Tell PerlIO we are about to tear things apart in case
425 we have layers which are using resources that should
429 PerlIO_destruct(aTHX);
431 if (PL_sv_objcount) {
433 * Try to destruct global references. We do this first so that the
434 * destructors and destructees still exist. Some sv's might remain.
435 * Non-referenced objects are on their own.
440 /* unhook hooks which will soon be, or use, destroyed data */
441 SvREFCNT_dec(PL_warnhook);
442 PL_warnhook = Nullsv;
443 SvREFCNT_dec(PL_diehook);
446 /* call exit list functions */
447 while (PL_exitlistlen-- > 0)
448 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
450 Safefree(PL_exitlist);
452 if (destruct_level == 0){
454 DEBUG_P(debprofdump());
456 #if defined(PERLIO_LAYERS)
457 /* No more IO - including error messages ! */
458 PerlIO_cleanup(aTHX);
461 /* The exit() function will do everything that needs doing. */
462 return STATUS_NATIVE_EXPORT;;
465 /* jettison our possibly duplicated environment */
466 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
467 * so we certainly shouldn't free it here
469 #if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
470 if (environ != PL_origenviron) {
473 for (i = 0; environ[i]; i++)
474 safesysfree(environ[i]);
476 /* Must use safesysfree() when working with environ. */
477 safesysfree(environ);
479 environ = PL_origenviron;
484 /* the syntax tree is shared between clones
485 * so op_free(PL_main_root) only ReREFCNT_dec's
486 * REGEXPs in the parent interpreter
487 * we need to manually ReREFCNT_dec for the clones
490 I32 i = AvFILLp(PL_regex_padav) + 1;
491 SV **ary = AvARRAY(PL_regex_padav);
495 REGEXP *re = INT2PTR(REGEXP *,SvIVX(resv));
497 if (SvFLAGS(resv) & SVf_BREAK) {
498 /* this is PL_reg_curpm, already freed
499 * flag is set in regexec.c:S_regtry
501 SvFLAGS(resv) &= ~SVf_BREAK;
503 else if(SvREPADTMP(resv)) {
504 SvREPADTMP_off(resv);
511 SvREFCNT_dec(PL_regex_padav);
512 PL_regex_padav = Nullav;
516 /* loosen bonds of global variables */
519 (void)PerlIO_close(PL_rsfp);
523 /* Filters for program text */
524 SvREFCNT_dec(PL_rsfp_filters);
525 PL_rsfp_filters = Nullav;
528 PL_preprocess = FALSE;
534 PL_doswitches = FALSE;
535 PL_dowarn = G_WARN_OFF;
536 PL_doextract = FALSE;
537 PL_sawampersand = FALSE; /* must save all match strings */
540 Safefree(PL_inplace);
542 SvREFCNT_dec(PL_patchlevel);
545 SvREFCNT_dec(PL_e_script);
546 PL_e_script = Nullsv;
549 while (--PL_origargc >= 0) {
550 Safefree(PL_origargv[PL_origargc]);
552 Safefree(PL_origargv);
554 /* magical thingies */
556 SvREFCNT_dec(PL_ofs_sv); /* $, */
559 SvREFCNT_dec(PL_ors_sv); /* $\ */
562 SvREFCNT_dec(PL_rs); /* $/ */
565 PL_multiline = 0; /* $* */
566 Safefree(PL_osname); /* $^O */
569 SvREFCNT_dec(PL_statname);
570 PL_statname = Nullsv;
573 /* defgv, aka *_ should be taken care of elsewhere */
575 /* clean up after study() */
576 SvREFCNT_dec(PL_lastscream);
577 PL_lastscream = Nullsv;
578 Safefree(PL_screamfirst);
580 Safefree(PL_screamnext);
584 Safefree(PL_efloatbuf);
585 PL_efloatbuf = Nullch;
588 /* startup and shutdown function lists */
589 SvREFCNT_dec(PL_beginav);
590 SvREFCNT_dec(PL_beginav_save);
591 SvREFCNT_dec(PL_endav);
592 SvREFCNT_dec(PL_checkav);
593 SvREFCNT_dec(PL_initav);
595 PL_beginav_save = Nullav;
600 /* shortcuts just get cleared */
606 PL_argvoutgv = Nullgv;
608 PL_stderrgv = Nullgv;
609 PL_last_in_gv = Nullgv;
611 PL_debstash = Nullhv;
613 /* reset so print() ends up where we expect */
616 SvREFCNT_dec(PL_argvout_stack);
617 PL_argvout_stack = Nullav;
619 SvREFCNT_dec(PL_modglobal);
620 PL_modglobal = Nullhv;
621 SvREFCNT_dec(PL_preambleav);
622 PL_preambleav = Nullav;
623 SvREFCNT_dec(PL_subname);
625 SvREFCNT_dec(PL_linestr);
627 SvREFCNT_dec(PL_pidstatus);
628 PL_pidstatus = Nullhv;
629 SvREFCNT_dec(PL_toptarget);
630 PL_toptarget = Nullsv;
631 SvREFCNT_dec(PL_bodytarget);
632 PL_bodytarget = Nullsv;
633 PL_formtarget = Nullsv;
635 /* free locale stuff */
636 #ifdef USE_LOCALE_COLLATE
637 Safefree(PL_collation_name);
638 PL_collation_name = Nullch;
641 #ifdef USE_LOCALE_NUMERIC
642 Safefree(PL_numeric_name);
643 PL_numeric_name = Nullch;
644 SvREFCNT_dec(PL_numeric_radix_sv);
647 /* clear utf8 character classes */
648 SvREFCNT_dec(PL_utf8_alnum);
649 SvREFCNT_dec(PL_utf8_alnumc);
650 SvREFCNT_dec(PL_utf8_ascii);
651 SvREFCNT_dec(PL_utf8_alpha);
652 SvREFCNT_dec(PL_utf8_space);
653 SvREFCNT_dec(PL_utf8_cntrl);
654 SvREFCNT_dec(PL_utf8_graph);
655 SvREFCNT_dec(PL_utf8_digit);
656 SvREFCNT_dec(PL_utf8_upper);
657 SvREFCNT_dec(PL_utf8_lower);
658 SvREFCNT_dec(PL_utf8_print);
659 SvREFCNT_dec(PL_utf8_punct);
660 SvREFCNT_dec(PL_utf8_xdigit);
661 SvREFCNT_dec(PL_utf8_mark);
662 SvREFCNT_dec(PL_utf8_toupper);
663 SvREFCNT_dec(PL_utf8_totitle);
664 SvREFCNT_dec(PL_utf8_tolower);
665 SvREFCNT_dec(PL_utf8_tofold);
666 PL_utf8_alnum = Nullsv;
667 PL_utf8_alnumc = Nullsv;
668 PL_utf8_ascii = Nullsv;
669 PL_utf8_alpha = Nullsv;
670 PL_utf8_space = Nullsv;
671 PL_utf8_cntrl = Nullsv;
672 PL_utf8_graph = Nullsv;
673 PL_utf8_digit = Nullsv;
674 PL_utf8_upper = Nullsv;
675 PL_utf8_lower = Nullsv;
676 PL_utf8_print = Nullsv;
677 PL_utf8_punct = Nullsv;
678 PL_utf8_xdigit = Nullsv;
679 PL_utf8_mark = Nullsv;
680 PL_utf8_toupper = Nullsv;
681 PL_utf8_totitle = Nullsv;
682 PL_utf8_tolower = Nullsv;
683 PL_utf8_tofold = Nullsv;
685 if (!specialWARN(PL_compiling.cop_warnings))
686 SvREFCNT_dec(PL_compiling.cop_warnings);
687 PL_compiling.cop_warnings = Nullsv;
688 if (!specialCopIO(PL_compiling.cop_io))
689 SvREFCNT_dec(PL_compiling.cop_io);
690 PL_compiling.cop_io = Nullsv;
691 CopFILE_free(&PL_compiling);
692 CopSTASH_free(&PL_compiling);
694 /* Prepare to destruct main symbol table. */
699 SvREFCNT_dec(PL_curstname);
700 PL_curstname = Nullsv;
702 /* clear queued errors */
703 SvREFCNT_dec(PL_errors);
707 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
708 if (PL_scopestack_ix != 0)
709 Perl_warner(aTHX_ WARN_INTERNAL,
710 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
711 (long)PL_scopestack_ix);
712 if (PL_savestack_ix != 0)
713 Perl_warner(aTHX_ WARN_INTERNAL,
714 "Unbalanced saves: %ld more saves than restores\n",
715 (long)PL_savestack_ix);
716 if (PL_tmps_floor != -1)
717 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced tmps: %ld more allocs than frees\n",
718 (long)PL_tmps_floor + 1);
719 if (cxstack_ix != -1)
720 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced context: %ld more PUSHes than POPs\n",
721 (long)cxstack_ix + 1);
724 /* Now absolutely destruct everything, somehow or other, loops or no. */
725 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
726 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
728 /* the 2 is for PL_fdpid and PL_strtab */
729 while (PL_sv_count > 2 && sv_clean_all())
732 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
733 SvFLAGS(PL_fdpid) |= SVt_PVAV;
734 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
735 SvFLAGS(PL_strtab) |= SVt_PVHV;
737 AvREAL_off(PL_fdpid); /* no surviving entries */
738 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
741 #ifdef HAVE_INTERP_INTERN
745 /* Destruct the global string table. */
747 /* Yell and reset the HeVAL() slots that are still holding refcounts,
748 * so that sv_free() won't fail on them.
756 max = HvMAX(PL_strtab);
757 array = HvARRAY(PL_strtab);
760 if (hent && ckWARN_d(WARN_INTERNAL)) {
761 Perl_warner(aTHX_ WARN_INTERNAL,
762 "Unbalanced string table refcount: (%d) for \"%s\"",
763 HeVAL(hent) - Nullsv, HeKEY(hent));
764 HeVAL(hent) = Nullsv;
774 SvREFCNT_dec(PL_strtab);
777 /* free the pointer table used for cloning */
778 ptr_table_free(PL_ptr_table);
781 /* free special SVs */
783 SvREFCNT(&PL_sv_yes) = 0;
784 sv_clear(&PL_sv_yes);
785 SvANY(&PL_sv_yes) = NULL;
786 SvFLAGS(&PL_sv_yes) = 0;
788 SvREFCNT(&PL_sv_no) = 0;
790 SvANY(&PL_sv_no) = NULL;
791 SvFLAGS(&PL_sv_no) = 0;
793 SvREFCNT(&PL_sv_undef) = 0;
794 SvREADONLY_off(&PL_sv_undef);
796 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
797 Perl_warner(aTHX_ WARN_INTERNAL,"Scalars leaked: %ld\n", (long)PL_sv_count);
799 #if defined(PERLIO_LAYERS)
800 /* No more IO - including error messages ! */
801 PerlIO_cleanup(aTHX);
804 Safefree(PL_origfilename);
805 Safefree(PL_reg_start_tmp);
807 Safefree(PL_reg_curpm);
808 Safefree(PL_reg_poscache);
809 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
810 Safefree(PL_op_mask);
811 Safefree(PL_psig_ptr);
812 Safefree(PL_psig_name);
813 Safefree(PL_bitcount);
814 Safefree(PL_psig_pend);
816 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
818 DEBUG_P(debprofdump());
819 #ifdef USE_5005THREADS
820 MUTEX_DESTROY(&PL_strtab_mutex);
821 MUTEX_DESTROY(&PL_sv_mutex);
822 MUTEX_DESTROY(&PL_eval_mutex);
823 MUTEX_DESTROY(&PL_cred_mutex);
824 MUTEX_DESTROY(&PL_fdpid_mutex);
825 COND_DESTROY(&PL_eval_cond);
826 #ifdef EMULATE_ATOMIC_REFCOUNTS
827 MUTEX_DESTROY(&PL_svref_mutex);
828 #endif /* EMULATE_ATOMIC_REFCOUNTS */
830 /* As the penultimate thing, free the non-arena SV for thrsv */
831 Safefree(SvPVX(PL_thrsv));
832 Safefree(SvANY(PL_thrsv));
835 #endif /* USE_5005THREADS */
837 #ifdef USE_REENTRANT_API
838 Safefree(PL_reentrant_buffer->tmbuf);
839 Safefree(PL_reentrant_buffer);
844 /* As the absolutely last thing, free the non-arena SV for mess() */
847 /* it could have accumulated taint magic */
848 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
851 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
852 moremagic = mg->mg_moremagic;
853 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
855 Safefree(mg->mg_ptr);
859 /* we know that type >= SVt_PV */
860 (void)SvOOK_off(PL_mess_sv);
861 Safefree(SvPVX(PL_mess_sv));
862 Safefree(SvANY(PL_mess_sv));
863 Safefree(PL_mess_sv);
866 return STATUS_NATIVE_EXPORT;
870 =for apidoc perl_free
872 Releases a Perl interpreter. See L<perlembed>.
880 #if defined(WIN32) || defined(NETWARE)
881 # if defined(PERL_IMPLICIT_SYS)
883 void *host = nw_internal_host;
885 void *host = w32_internal_host;
889 nw5_delete_internal_host(host);
891 win32_delete_internal_host(host);
902 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
904 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
905 PL_exitlist[PL_exitlistlen].fn = fn;
906 PL_exitlist[PL_exitlistlen].ptr = ptr;
911 =for apidoc perl_parse
913 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
919 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
924 #ifdef USE_5005THREADS
928 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
931 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
932 setuid perl scripts securely.\n");
938 /* we copy rather than point to argv
939 * since perl_clone will copy and perl_destruct
940 * has no way of knowing if we've made a copy or
944 New(0, PL_origargv, i+1, char*);
945 PL_origargv[i] = '\0';
947 PL_origargv[i] = savepv(argv[i]);
955 /* Come here if running an undumped a.out. */
957 PL_origfilename = savepv(argv[0]);
958 PL_do_undump = FALSE;
959 cxstack_ix = -1; /* start label stack again */
961 init_postdump_symbols(argc,argv,env);
966 PL_curpad = AvARRAY(PL_comppad);
967 op_free(PL_main_root);
968 PL_main_root = Nullop;
970 PL_main_start = Nullop;
971 SvREFCNT_dec(PL_main_cv);
975 oldscope = PL_scopestack_ix;
976 PL_dowarn = G_WARN_OFF;
978 #ifdef PERL_FLEXIBLE_EXCEPTIONS
979 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
985 #ifndef PERL_FLEXIBLE_EXCEPTIONS
986 parse_body(env,xsinit);
989 call_list(oldscope, PL_checkav);
996 /* my_exit() was called */
997 while (PL_scopestack_ix > oldscope)
1000 PL_curstash = PL_defstash;
1002 call_list(oldscope, PL_checkav);
1003 ret = STATUS_NATIVE_EXPORT;
1006 PerlIO_printf(Perl_error_log, "panic: top_env\n");
1014 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1016 S_vparse_body(pTHX_ va_list args)
1018 char **env = va_arg(args, char**);
1019 XSINIT_t xsinit = va_arg(args, XSINIT_t);
1021 return parse_body(env, xsinit);
1026 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
1028 int argc = PL_origargc;
1029 char **argv = PL_origargv;
1030 char *scriptname = NULL;
1032 VOL bool dosearch = FALSE;
1033 char *validarg = "";
1037 char *cddir = Nullch;
1039 sv_setpvn(PL_linestr,"",0);
1040 sv = newSVpvn("",0); /* first used for -I flags */
1044 for (argc--,argv++; argc > 0; argc--,argv++) {
1045 if (argv[0][0] != '-' || !argv[0][1])
1049 validarg = " PHOOEY ";
1058 win32_argv2utf8(argc-1, argv+1);
1061 #ifndef PERL_STRICT_CR
1085 if ((s = moreswitches(s)))
1090 if( !PL_tainting ) {
1091 PL_taint_warn = TRUE;
1098 PL_taint_warn = FALSE;
1103 #ifdef MACOS_TRADITIONAL
1104 /* ignore -e for Dev:Pseudo argument */
1105 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
1108 if (PL_euid != PL_uid || PL_egid != PL_gid)
1109 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
1111 PL_e_script = newSVpvn("",0);
1112 filter_add(read_e_script, NULL);
1115 sv_catpv(PL_e_script, s);
1117 sv_catpv(PL_e_script, argv[1]);
1121 Perl_croak(aTHX_ "No code specified for -e");
1122 sv_catpv(PL_e_script, "\n");
1125 case 'I': /* -I handled both here and in moreswitches() */
1127 if (!*++s && (s=argv[1]) != Nullch) {
1132 STRLEN len = strlen(s);
1133 p = savepvn(s, len);
1134 incpush(p, TRUE, TRUE);
1135 sv_catpvn(sv, "-I", 2);
1136 sv_catpvn(sv, p, len);
1137 sv_catpvn(sv, " ", 1);
1141 Perl_croak(aTHX_ "No directory specified for -I");
1145 PL_preprocess = TRUE;
1155 PL_preambleav = newAV();
1156 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
1158 PL_Sv = newSVpv("print myconfig();",0);
1160 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
1162 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
1164 sv_catpv(PL_Sv,"\" Compile-time options:");
1166 sv_catpv(PL_Sv," DEBUGGING");
1168 # ifdef MULTIPLICITY
1169 sv_catpv(PL_Sv," MULTIPLICITY");
1171 # ifdef USE_5005THREADS
1172 sv_catpv(PL_Sv," USE_5005THREADS");
1174 # ifdef USE_ITHREADS
1175 sv_catpv(PL_Sv," USE_ITHREADS");
1177 # ifdef USE_64_BIT_INT
1178 sv_catpv(PL_Sv," USE_64_BIT_INT");
1180 # ifdef USE_64_BIT_ALL
1181 sv_catpv(PL_Sv," USE_64_BIT_ALL");
1183 # ifdef USE_LONG_DOUBLE
1184 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1186 # ifdef USE_LARGE_FILES
1187 sv_catpv(PL_Sv," USE_LARGE_FILES");
1190 sv_catpv(PL_Sv," USE_SOCKS");
1192 # ifdef PERL_IMPLICIT_CONTEXT
1193 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1195 # ifdef PERL_IMPLICIT_SYS
1196 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1198 sv_catpv(PL_Sv,"\\n\",");
1200 #if defined(LOCAL_PATCH_COUNT)
1201 if (LOCAL_PATCH_COUNT > 0) {
1203 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
1204 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1205 if (PL_localpatches[i])
1206 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
1210 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
1213 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
1215 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
1218 sv_catpv(PL_Sv, "; \
1220 @env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; ");
1223 push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
1226 print \" \\%ENV:\\n @env\\n\" if @env; \
1227 print \" \\@INC:\\n @INC\\n\";");
1230 PL_Sv = newSVpv("config_vars(qw(",0);
1231 sv_catpv(PL_Sv, ++s);
1232 sv_catpv(PL_Sv, "))");
1235 av_push(PL_preambleav, PL_Sv);
1236 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1239 PL_doextract = TRUE;
1247 if (!*++s || isSPACE(*s)) {
1251 /* catch use of gnu style long options */
1252 if (strEQ(s, "version")) {
1256 if (strEQ(s, "help")) {
1263 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1269 #ifndef SECURE_INTERNAL_GETENV
1272 (s = PerlEnv_getenv("PERL5OPT")))
1277 if (*s == '-' && *(s+1) == 'T') {
1279 PL_taint_warn = FALSE;
1282 char *popt_copy = Nullch;
1295 if (!strchr("DIMUdmtw", *s))
1296 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
1300 popt_copy = SvPVX(sv_2mortal(newSVpv(popt,0)));
1301 s = popt_copy + (s - popt);
1302 d = popt_copy + (d - popt);
1309 if( !PL_tainting ) {
1310 PL_taint_warn = TRUE;
1320 if (PL_taint_warn && PL_dowarn != G_WARN_ALL_OFF) {
1321 PL_compiling.cop_warnings = newSVpvn(WARN_TAINTstring, WARNsize);
1325 scriptname = argv[0];
1328 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1330 else if (scriptname == Nullch) {
1332 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1340 open_script(scriptname,dosearch,sv,&fdscript);
1342 validate_suid(validarg, scriptname,fdscript);
1345 #if defined(SIGCHLD) || defined(SIGCLD)
1348 # define SIGCHLD SIGCLD
1350 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1351 if (sigstate == SIG_IGN) {
1352 if (ckWARN(WARN_SIGNAL))
1353 Perl_warner(aTHX_ WARN_SIGNAL,
1354 "Can't ignore signal CHLD, forcing to default");
1355 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1361 #ifdef MACOS_TRADITIONAL
1362 if (PL_doextract || gMacPerl_AlwaysExtract) {
1367 if (cddir && PerlDir_chdir(cddir) < 0)
1368 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1372 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1373 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1374 CvUNIQUE_on(PL_compcv);
1376 PL_comppad = newAV();
1377 av_push(PL_comppad, Nullsv);
1378 PL_curpad = AvARRAY(PL_comppad);
1379 PL_comppad_name = newAV();
1380 PL_comppad_name_fill = 0;
1381 PL_min_intro_pending = 0;
1383 #ifdef USE_5005THREADS
1384 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
1385 PL_curpad[0] = (SV*)newAV();
1386 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1387 CvOWNER(PL_compcv) = 0;
1388 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1389 MUTEX_INIT(CvMUTEXP(PL_compcv));
1390 #endif /* USE_5005THREADS */
1392 comppadlist = newAV();
1393 AvREAL_off(comppadlist);
1394 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1395 av_store(comppadlist, 1, (SV*)PL_comppad);
1396 CvPADLIST(PL_compcv) = comppadlist;
1399 boot_core_UNIVERSAL();
1401 boot_core_xsutils();
1405 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
1407 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
1413 # ifdef HAS_SOCKS5_INIT
1414 socks5_init(argv[0]);
1420 init_predump_symbols();
1421 /* init_postdump_symbols not currently designed to be called */
1422 /* more than once (ENV isn't cleared first, for example) */
1423 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
1425 init_postdump_symbols(argc,argv,env);
1429 /* now parse the script */
1431 SETERRNO(0,SS$_NORMAL);
1433 #ifdef MACOS_TRADITIONAL
1434 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1436 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1438 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1439 MacPerl_MPWFileName(PL_origfilename));
1443 if (yyparse() || PL_error_count) {
1445 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
1447 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1452 CopLINE_set(PL_curcop, 0);
1453 PL_curstash = PL_defstash;
1454 PL_preprocess = FALSE;
1456 SvREFCNT_dec(PL_e_script);
1457 PL_e_script = Nullsv;
1461 Not sure that this is still the right place to do this now that we
1462 no longer use PL_nrs. HVDS 2001/09/09
1464 sv_setsv(get_sv("/", TRUE), PL_rs);
1470 SAVECOPFILE(PL_curcop);
1471 SAVECOPLINE(PL_curcop);
1472 gv_check(PL_defstash);
1479 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1480 dump_mstats("after compilation:");
1489 =for apidoc perl_run
1491 Tells a Perl interpreter to run. See L<perlembed>.
1502 #ifdef USE_5005THREADS
1506 oldscope = PL_scopestack_ix;
1511 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1513 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1519 cxstack_ix = -1; /* start context stack again */
1521 case 0: /* normal completion */
1522 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1527 case 2: /* my_exit() */
1528 while (PL_scopestack_ix > oldscope)
1531 PL_curstash = PL_defstash;
1532 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
1533 PL_endav && !PL_minus_c)
1534 call_list(oldscope, PL_endav);
1536 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1537 dump_mstats("after execution: ");
1539 ret = STATUS_NATIVE_EXPORT;
1543 POPSTACK_TO(PL_mainstack);
1546 PerlIO_printf(Perl_error_log, "panic: restartop\n");
1556 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1558 S_vrun_body(pTHX_ va_list args)
1560 I32 oldscope = va_arg(args, I32);
1562 return run_body(oldscope);
1568 S_run_body(pTHX_ I32 oldscope)
1570 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
1571 PL_sawampersand ? "Enabling" : "Omitting"));
1573 if (!PL_restartop) {
1574 DEBUG_x(dump_all());
1575 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
1576 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1580 #ifdef MACOS_TRADITIONAL
1581 PerlIO_printf(Perl_error_log, "# %s syntax OK\n", MacPerl_MPWFileName(PL_origfilename));
1583 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
1587 if (PERLDB_SINGLE && PL_DBsingle)
1588 sv_setiv(PL_DBsingle, 1);
1590 call_list(oldscope, PL_initav);
1596 PL_op = PL_restartop;
1600 else if (PL_main_start) {
1601 CvDEPTH(PL_main_cv) = 1;
1602 PL_op = PL_main_start;
1612 =head1 SV Manipulation Functions
1614 =for apidoc p||get_sv
1616 Returns the SV of the specified Perl scalar. If C<create> is set and the
1617 Perl variable does not exist then it will be created. If C<create> is not
1618 set and the variable does not exist then NULL is returned.
1624 Perl_get_sv(pTHX_ const char *name, I32 create)
1627 #ifdef USE_5005THREADS
1628 if (name[1] == '\0' && !isALPHA(name[0])) {
1629 PADOFFSET tmp = find_threadsv(name);
1630 if (tmp != NOT_IN_PAD)
1631 return THREADSV(tmp);
1633 #endif /* USE_5005THREADS */
1634 gv = gv_fetchpv(name, create, SVt_PV);
1641 =head1 Array Manipulation Functions
1643 =for apidoc p||get_av
1645 Returns the AV of the specified Perl array. If C<create> is set and the
1646 Perl variable does not exist then it will be created. If C<create> is not
1647 set and the variable does not exist then NULL is returned.
1653 Perl_get_av(pTHX_ const char *name, I32 create)
1655 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1664 =head1 Hash Manipulation Functions
1666 =for apidoc p||get_hv
1668 Returns the HV of the specified Perl hash. If C<create> is set and the
1669 Perl variable does not exist then it will be created. If C<create> is not
1670 set and the variable does not exist then NULL is returned.
1676 Perl_get_hv(pTHX_ const char *name, I32 create)
1678 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1687 =head1 CV Manipulation Functions
1689 =for apidoc p||get_cv
1691 Returns the CV of the specified Perl subroutine. If C<create> is set and
1692 the Perl subroutine does not exist then it will be declared (which has the
1693 same effect as saying C<sub name;>). If C<create> is not set and the
1694 subroutine does not exist then NULL is returned.
1700 Perl_get_cv(pTHX_ const char *name, I32 create)
1702 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
1703 /* XXX unsafe for threads if eval_owner isn't held */
1704 /* XXX this is probably not what they think they're getting.
1705 * It has the same effect as "sub name;", i.e. just a forward
1707 if (create && !GvCVu(gv))
1708 return newSUB(start_subparse(FALSE, 0),
1709 newSVOP(OP_CONST, 0, newSVpv(name,0)),
1717 /* Be sure to refetch the stack pointer after calling these routines. */
1721 =head1 Callback Functions
1723 =for apidoc p||call_argv
1725 Performs a callback to the specified Perl sub. See L<perlcall>.
1731 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
1733 /* See G_* flags in cop.h */
1734 /* null terminated arg list */
1741 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
1746 return call_pv(sub_name, flags);
1750 =for apidoc p||call_pv
1752 Performs a callback to the specified Perl sub. See L<perlcall>.
1758 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
1759 /* name of the subroutine */
1760 /* See G_* flags in cop.h */
1762 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
1766 =for apidoc p||call_method
1768 Performs a callback to the specified Perl method. The blessed object must
1769 be on the stack. See L<perlcall>.
1775 Perl_call_method(pTHX_ const char *methname, I32 flags)
1776 /* name of the subroutine */
1777 /* See G_* flags in cop.h */
1779 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
1782 /* May be called with any of a CV, a GV, or an SV containing the name. */
1784 =for apidoc p||call_sv
1786 Performs a callback to the Perl sub whose name is in the SV. See
1793 Perl_call_sv(pTHX_ SV *sv, I32 flags)
1794 /* See G_* flags in cop.h */
1797 LOGOP myop; /* fake syntax tree node */
1800 volatile I32 retval = 0;
1802 bool oldcatch = CATCH_GET;
1807 if (flags & G_DISCARD) {
1812 Zero(&myop, 1, LOGOP);
1813 myop.op_next = Nullop;
1814 if (!(flags & G_NOARGS))
1815 myop.op_flags |= OPf_STACKED;
1816 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1817 (flags & G_ARRAY) ? OPf_WANT_LIST :
1822 EXTEND(PL_stack_sp, 1);
1823 *++PL_stack_sp = sv;
1825 oldscope = PL_scopestack_ix;
1827 if (PERLDB_SUB && PL_curstash != PL_debstash
1828 /* Handle first BEGIN of -d. */
1829 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
1830 /* Try harder, since this may have been a sighandler, thus
1831 * curstash may be meaningless. */
1832 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
1833 && !(flags & G_NODEBUG))
1834 PL_op->op_private |= OPpENTERSUB_DB;
1836 if (flags & G_METHOD) {
1837 Zero(&method_op, 1, UNOP);
1838 method_op.op_next = PL_op;
1839 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1840 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
1841 PL_op = (OP*)&method_op;
1844 if (!(flags & G_EVAL)) {
1846 call_body((OP*)&myop, FALSE);
1847 retval = PL_stack_sp - (PL_stack_base + oldmark);
1848 CATCH_SET(oldcatch);
1851 myop.op_other = (OP*)&myop;
1853 /* we're trying to emulate pp_entertry() here */
1855 register PERL_CONTEXT *cx;
1856 I32 gimme = GIMME_V;
1861 push_return(Nullop);
1862 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
1864 PL_eval_root = PL_op; /* Only needed so that goto works right. */
1866 PL_in_eval = EVAL_INEVAL;
1867 if (flags & G_KEEPERR)
1868 PL_in_eval |= EVAL_KEEPERR;
1874 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1876 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1883 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1885 call_body((OP*)&myop, FALSE);
1887 retval = PL_stack_sp - (PL_stack_base + oldmark);
1888 if (!(flags & G_KEEPERR))
1895 /* my_exit() was called */
1896 PL_curstash = PL_defstash;
1899 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1900 Perl_croak(aTHX_ "Callback called exit");
1905 PL_op = PL_restartop;
1909 PL_stack_sp = PL_stack_base + oldmark;
1910 if (flags & G_ARRAY)
1914 *++PL_stack_sp = &PL_sv_undef;
1919 if (PL_scopestack_ix > oldscope) {
1923 register PERL_CONTEXT *cx;
1935 if (flags & G_DISCARD) {
1936 PL_stack_sp = PL_stack_base + oldmark;
1945 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1947 S_vcall_body(pTHX_ va_list args)
1949 OP *myop = va_arg(args, OP*);
1950 int is_eval = va_arg(args, int);
1952 call_body(myop, is_eval);
1958 S_call_body(pTHX_ OP *myop, int is_eval)
1960 if (PL_op == myop) {
1962 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
1964 PL_op = Perl_pp_entersub(aTHX); /* this does */
1970 /* Eval a string. The G_EVAL flag is always assumed. */
1973 =for apidoc p||eval_sv
1975 Tells Perl to C<eval> the string in the SV.
1981 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
1983 /* See G_* flags in cop.h */
1986 UNOP myop; /* fake syntax tree node */
1987 volatile I32 oldmark = SP - PL_stack_base;
1988 volatile I32 retval = 0;
1994 if (flags & G_DISCARD) {
2001 Zero(PL_op, 1, UNOP);
2002 EXTEND(PL_stack_sp, 1);
2003 *++PL_stack_sp = sv;
2004 oldscope = PL_scopestack_ix;
2006 if (!(flags & G_NOARGS))
2007 myop.op_flags = OPf_STACKED;
2008 myop.op_next = Nullop;
2009 myop.op_type = OP_ENTEREVAL;
2010 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
2011 (flags & G_ARRAY) ? OPf_WANT_LIST :
2013 if (flags & G_KEEPERR)
2014 myop.op_flags |= OPf_SPECIAL;
2016 #ifdef PERL_FLEXIBLE_EXCEPTIONS
2018 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
2025 #ifndef PERL_FLEXIBLE_EXCEPTIONS
2027 call_body((OP*)&myop,TRUE);
2029 retval = PL_stack_sp - (PL_stack_base + oldmark);
2030 if (!(flags & G_KEEPERR))
2037 /* my_exit() was called */
2038 PL_curstash = PL_defstash;
2041 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
2042 Perl_croak(aTHX_ "Callback called exit");
2047 PL_op = PL_restartop;
2051 PL_stack_sp = PL_stack_base + oldmark;
2052 if (flags & G_ARRAY)
2056 *++PL_stack_sp = &PL_sv_undef;
2062 if (flags & G_DISCARD) {
2063 PL_stack_sp = PL_stack_base + oldmark;
2073 =for apidoc p||eval_pv
2075 Tells Perl to C<eval> the given string and return an SV* result.
2081 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
2084 SV* sv = newSVpv(p, 0);
2086 eval_sv(sv, G_SCALAR);
2093 if (croak_on_error && SvTRUE(ERRSV)) {
2095 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
2101 /* Require a module. */
2104 =head1 Embedding Functions
2106 =for apidoc p||require_pv
2108 Tells Perl to C<require> the file named by the string argument. It is
2109 analogous to the Perl code C<eval "require '$file'">. It's even
2110 implemented that way; consider using Perl_load_module instead.
2115 Perl_require_pv(pTHX_ const char *pv)
2119 PUSHSTACKi(PERLSI_REQUIRE);
2121 sv = sv_newmortal();
2122 sv_setpv(sv, "require '");
2125 eval_sv(sv, G_DISCARD);
2131 Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
2135 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
2136 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
2140 S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
2142 /* This message really ought to be max 23 lines.
2143 * Removed -h because the user already knows that option. Others? */
2145 static char *usage_msg[] = {
2146 "-0[octal] specify record separator (\\0, if no argument)",
2147 "-a autosplit mode with -n or -p (splits $_ into @F)",
2148 "-C enable native wide character system interfaces",
2149 "-c check syntax only (runs BEGIN and CHECK blocks)",
2150 "-d[:debugger] run program under debugger",
2151 "-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2152 "-e 'command' one line of program (several -e's allowed, omit programfile)",
2153 "-F/pattern/ split() pattern for -a switch (//'s are optional)",
2154 "-i[extension] edit <> files in place (makes backup if extension supplied)",
2155 "-Idirectory specify @INC/#include directory (several -I's allowed)",
2156 "-l[octal] enable line ending processing, specifies line terminator",
2157 "-[mM][-]module execute `use/no module...' before executing program",
2158 "-n assume 'while (<>) { ... }' loop around program",
2159 "-p assume loop like -n but print line also, like sed",
2160 "-P run program through C preprocessor before compilation",
2161 "-s enable rudimentary parsing for switches after programfile",
2162 "-S look for programfile using PATH environment variable",
2163 "-T enable tainting checks",
2164 "-u dump core after parsing program",
2165 "-U allow unsafe operations",
2166 "-v print version, subversion (includes VERY IMPORTANT perl info)",
2167 "-V[:variable] print configuration summary (or a single Config.pm variable)",
2168 "-w enable many useful warnings (RECOMMENDED)",
2169 "-W enable all warnings",
2170 "-X disable all warnings",
2171 "-x[directory] strip off text before #!perl line and perhaps cd to directory",
2175 char **p = usage_msg;
2177 PerlIO_printf(PerlIO_stdout(),
2178 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2181 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
2184 /* This routine handles any switches that can be given during run */
2187 Perl_moreswitches(pTHX_ char *s)
2197 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
2198 SvREFCNT_dec(PL_rs);
2199 if (rschar & ~((U8)~0))
2200 PL_rs = &PL_sv_undef;
2201 else if (!rschar && numlen >= 2)
2202 PL_rs = newSVpvn("", 0);
2205 PL_rs = newSVpvn(&ch, 1);
2210 PL_widesyscalls = TRUE;
2216 while (*s && !isSPACE(*s)) ++s;
2218 PL_splitstr = savepv(PL_splitstr);
2231 /* The following permits -d:Mod to accepts arguments following an =
2232 in the fashion that -MSome::Mod does. */
2233 if (*s == ':' || *s == '=') {
2236 sv = newSVpv("use Devel::", 0);
2238 /* We now allow -d:Module=Foo,Bar */
2239 while(isALNUM(*s) || *s==':') ++s;
2241 sv_catpv(sv, start);
2243 sv_catpvn(sv, start, s-start);
2244 sv_catpv(sv, " split(/,/,q{");
2249 my_setenv("PERL5DB", SvPV(sv, PL_na));
2252 PL_perldb = PERLDB_ALL;
2260 if (isALPHA(s[1])) {
2261 /* if adding extra options, remember to update DEBUG_MASK */
2262 static char debopts[] = "psltocPmfrxuLHXDSTRJ";
2265 for (s++; *s && (d = strchr(debopts,*s)); s++)
2266 PL_debug |= 1 << (d - debopts);
2269 PL_debug = atoi(s+1);
2270 for (s++; isDIGIT(*s); s++) ;
2272 PL_debug |= DEBUG_TOP_FLAG;
2274 if (ckWARN_d(WARN_DEBUGGING))
2275 Perl_warner(aTHX_ WARN_DEBUGGING,
2276 "Recompile perl with -DDEBUGGING to use -D switch\n");
2277 for (s++; isALNUM(*s); s++) ;
2283 usage(PL_origargv[0]);
2287 Safefree(PL_inplace);
2288 PL_inplace = savepv(s+1);
2290 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
2293 if (*s == '-') /* Additional switches on #! line. */
2297 case 'I': /* -I handled both here and in parse_body() */
2300 while (*s && isSPACE(*s))
2305 /* ignore trailing spaces (possibly followed by other switches) */
2307 for (e = p; *e && !isSPACE(*e); e++) ;
2311 } while (*p && *p != '-');
2312 e = savepvn(s, e-s);
2313 incpush(e, TRUE, TRUE);
2320 Perl_croak(aTHX_ "No directory specified for -I");
2326 SvREFCNT_dec(PL_ors_sv);
2331 PL_ors_sv = newSVpvn("\n",1);
2332 numlen = 3 + (*s == '0');
2333 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
2337 if (RsPARA(PL_rs)) {
2338 PL_ors_sv = newSVpvn("\n\n",2);
2341 PL_ors_sv = newSVsv(PL_rs);
2346 forbid_setid("-M"); /* XXX ? */
2349 forbid_setid("-m"); /* XXX ? */
2354 /* -M-foo == 'no foo' */
2355 if (*s == '-') { use = "no "; ++s; }
2356 sv = newSVpv(use,0);
2358 /* We allow -M'Module qw(Foo Bar)' */
2359 while(isALNUM(*s) || *s==':') ++s;
2361 sv_catpv(sv, start);
2362 if (*(start-1) == 'm') {
2364 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
2365 sv_catpv( sv, " ()");
2369 Perl_croak(aTHX_ "Module name required with -%c option",
2371 sv_catpvn(sv, start, s-start);
2372 sv_catpv(sv, " split(/,/,q{");
2378 PL_preambleav = newAV();
2379 av_push(PL_preambleav, sv);
2382 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
2394 PL_doswitches = TRUE;
2399 Perl_croak(aTHX_ "Too late for \"-t\" option");
2404 Perl_croak(aTHX_ "Too late for \"-T\" option");
2408 #ifdef MACOS_TRADITIONAL
2409 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2411 PL_do_undump = TRUE;
2420 PerlIO_printf(PerlIO_stdout(),
2421 Perl_form(aTHX_ "\nThis is perl, v%"VDf" built for %s",
2422 PL_patchlevel, ARCHNAME));
2424 /* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
2425 PerlIO_printf(PerlIO_stdout(),
2426 Perl_form(aTHX_ "\nThis is perl, version %vd\n", PL_patchlevel));
2427 PerlIO_printf(PerlIO_stdout(),
2428 Perl_form(aTHX_ " built under %s at %s %s\n",
2429 OSNAME, __DATE__, __TIME__));
2430 PerlIO_printf(PerlIO_stdout(),
2431 Perl_form(aTHX_ " OS Specific Release: %s\n",
2435 #if defined(LOCAL_PATCH_COUNT)
2436 if (LOCAL_PATCH_COUNT > 0)
2437 PerlIO_printf(PerlIO_stdout(),
2438 "\n(with %d registered patch%s, "
2439 "see perl -V for more detail)",
2440 (int)LOCAL_PATCH_COUNT,
2441 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
2444 PerlIO_printf(PerlIO_stdout(),
2445 "\n\nCopyright 1987-2002, Larry Wall\n");
2446 #ifdef MACOS_TRADITIONAL
2447 PerlIO_printf(PerlIO_stdout(),
2448 "\nMac OS port Copyright 1991-2002, Matthias Neeracher;\n"
2449 "maintained by Chris Nandor\n");
2452 PerlIO_printf(PerlIO_stdout(),
2453 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
2456 PerlIO_printf(PerlIO_stdout(),
2457 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2458 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
2461 PerlIO_printf(PerlIO_stdout(),
2462 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2463 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
2466 PerlIO_printf(PerlIO_stdout(),
2467 "atariST series port, ++jrb bammi@cadence.com\n");
2470 PerlIO_printf(PerlIO_stdout(),
2471 "BeOS port Copyright Tom Spindler, 1997-1999\n");
2474 PerlIO_printf(PerlIO_stdout(),
2475 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2002\n");
2478 PerlIO_printf(PerlIO_stdout(),
2479 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
2482 PerlIO_printf(PerlIO_stdout(),
2483 "Stratus VOS port by Paul_Green@stratus.com, 1997-2002\n");
2486 PerlIO_printf(PerlIO_stdout(),
2487 "VM/ESA port by Neale Ferguson, 1998-1999\n");
2490 PerlIO_printf(PerlIO_stdout(),
2491 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
2494 PerlIO_printf(PerlIO_stdout(),
2495 "MiNT port by Guido Flohr, 1997-1999\n");
2498 PerlIO_printf(PerlIO_stdout(),
2499 "EPOC port by Olaf Flebbe, 1999-2002\n");
2502 printf("WINCE port by Rainer Keuchel, 2001-2002\n");
2503 printf("Built on " __DATE__ " " __TIME__ "\n\n");
2506 #ifdef BINARY_BUILD_NOTICE
2507 BINARY_BUILD_NOTICE;
2509 PerlIO_printf(PerlIO_stdout(),
2511 Perl may be copied only under the terms of either the Artistic License or the\n\
2512 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
2513 Complete documentation for Perl, including FAQ lists, should be found on\n\
2514 this system using `man perl' or `perldoc perl'. If you have access to the\n\
2515 Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
2518 if (! (PL_dowarn & G_WARN_ALL_MASK))
2519 PL_dowarn |= G_WARN_ON;
2523 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
2524 if (!specialWARN(PL_compiling.cop_warnings))
2525 SvREFCNT_dec(PL_compiling.cop_warnings);
2526 PL_compiling.cop_warnings = pWARN_ALL ;
2530 PL_dowarn = G_WARN_ALL_OFF;
2531 if (!specialWARN(PL_compiling.cop_warnings))
2532 SvREFCNT_dec(PL_compiling.cop_warnings);
2533 PL_compiling.cop_warnings = pWARN_NONE ;
2538 if (s[1] == '-') /* Additional switches on #! line. */
2543 #if defined(WIN32) || !defined(PERL_STRICT_CR)
2549 #ifdef ALTERNATE_SHEBANG
2550 case 'S': /* OS/2 needs -S on "extproc" line. */
2558 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
2563 /* compliments of Tom Christiansen */
2565 /* unexec() can be found in the Gnu emacs distribution */
2566 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
2569 Perl_my_unexec(pTHX)
2577 prog = newSVpv(BIN_EXP, 0);
2578 sv_catpv(prog, "/perl");
2579 file = newSVpv(PL_origfilename, 0);
2580 sv_catpv(file, ".perldump");
2582 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2583 /* unexec prints msg to stderr in case of failure */
2584 PerlProc_exit(status);
2587 # include <lib$routines.h>
2588 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
2590 ABORT(); /* for use with undump */
2595 /* initialize curinterp */
2601 # define PERLVAR(var,type)
2602 # define PERLVARA(var,n,type)
2603 # if defined(PERL_IMPLICIT_CONTEXT)
2604 # if defined(USE_5005THREADS)
2605 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2606 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2607 # else /* !USE_5005THREADS */
2608 # define PERLVARI(var,type,init) aTHX->var = init;
2609 # define PERLVARIC(var,type,init) aTHX->var = init;
2610 # endif /* USE_5005THREADS */
2612 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2613 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2615 # include "intrpvar.h"
2616 # ifndef USE_5005THREADS
2617 # include "thrdvar.h"
2624 # define PERLVAR(var,type)
2625 # define PERLVARA(var,n,type)
2626 # define PERLVARI(var,type,init) PL_##var = init;
2627 # define PERLVARIC(var,type,init) PL_##var = init;
2628 # include "intrpvar.h"
2629 # ifndef USE_5005THREADS
2630 # include "thrdvar.h"
2641 S_init_main_stash(pTHX)
2647 PL_curstash = PL_defstash = newHV();
2648 PL_curstname = newSVpvn("main",4);
2649 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2650 SvREFCNT_dec(GvHV(gv));
2651 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
2653 HvNAME(PL_defstash) = savepv("main");
2654 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2655 GvMULTI_on(PL_incgv);
2656 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2657 GvMULTI_on(PL_hintgv);
2658 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2659 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2660 GvMULTI_on(PL_errgv);
2661 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2662 GvMULTI_on(PL_replgv);
2663 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
2664 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2665 sv_setpvn(ERRSV, "", 0);
2666 PL_curstash = PL_defstash;
2667 CopSTASH_set(&PL_compiling, PL_defstash);
2668 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
2669 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
2670 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
2671 /* We must init $/ before switches are processed. */
2672 sv_setpvn(get_sv("/", TRUE), "\n", 1);
2676 S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
2680 char *cpp_discard_flag;
2686 PL_origfilename = savepv("-e");
2689 /* if find_script() returns, it returns a malloc()-ed value */
2690 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
2692 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2693 char *s = scriptname + 8;
2694 *fdscript = atoi(s);
2698 scriptname = savepv(s + 1);
2699 Safefree(PL_origfilename);
2700 PL_origfilename = scriptname;
2705 CopFILE_free(PL_curcop);
2706 CopFILE_set(PL_curcop, PL_origfilename);
2707 if (strEQ(PL_origfilename,"-"))
2709 if (*fdscript >= 0) {
2710 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
2711 # if defined(HAS_FCNTL) && defined(F_SETFD)
2713 /* ensure close-on-exec */
2714 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1);
2717 else if (PL_preprocess) {
2718 char *cpp_cfg = CPPSTDIN;
2719 SV *cpp = newSVpvn("",0);
2720 SV *cmd = NEWSV(0,0);
2722 if (strEQ(cpp_cfg, "cppstdin"))
2723 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
2724 sv_catpv(cpp, cpp_cfg);
2727 sv_catpvn(sv, "-I", 2);
2728 sv_catpv(sv,PRIVLIB_EXP);
2731 DEBUG_P(PerlIO_printf(Perl_debug_log,
2732 "PL_preprocess: scriptname=\"%s\", cpp=\"%s\", sv=\"%s\", CPPMINUS=\"%s\"\n",
2733 scriptname, SvPVX (cpp), SvPVX (sv), CPPMINUS));
2735 # if defined(MSDOS) || defined(WIN32) || defined(VMS)
2742 cpp_discard_flag = "";
2744 cpp_discard_flag = "-C";
2748 perl = os2_execname(aTHX);
2750 perl = PL_origargv[0];
2754 /* This strips off Perl comments which might interfere with
2755 the C pre-processor, including #!. #line directives are
2756 deliberately stripped to avoid confusion with Perl's version
2757 of #line. FWP played some golf with it so it will fit
2758 into VMS's 255 character buffer.
2761 code = "(1../^#!.*perl/i)|/^\\s*#(?!\\s*((ifn?|un)def|(el|end)?if|define|include|else|error|pragma)\\b)/||!($|=1)||print";
2763 code = "/^\\s*#(?!\\s*((ifn?|un)def|(el|end)?if|define|include|else|error|pragma)\\b)/||!($|=1)||print";
2765 Perl_sv_setpvf(aTHX_ cmd, "\
2766 %s -ne%s%s%s %s | %"SVf" %s %"SVf" %s",
2767 perl, quote, code, quote, scriptname, cpp,
2768 cpp_discard_flag, sv, CPPMINUS);
2770 PL_doextract = FALSE;
2771 # ifdef IAMSUID /* actually, this is caught earlier */
2772 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
2774 (void)seteuid(PL_uid); /* musn't stay setuid root */
2776 # ifdef HAS_SETREUID
2777 (void)setreuid((Uid_t)-1, PL_uid);
2779 # ifdef HAS_SETRESUID
2780 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
2782 PerlProc_setuid(PL_uid);
2786 if (PerlProc_geteuid() != PL_uid)
2787 Perl_croak(aTHX_ "Can't do seteuid!\n");
2789 # endif /* IAMSUID */
2791 DEBUG_P(PerlIO_printf(Perl_debug_log,
2792 "PL_preprocess: cmd=\"%s\"\n",
2795 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
2799 else if (!*scriptname) {
2800 forbid_setid("program input from stdin");
2801 PL_rsfp = PerlIO_stdin();
2804 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
2805 # if defined(HAS_FCNTL) && defined(F_SETFD)
2807 /* ensure close-on-exec */
2808 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1);
2813 # ifndef IAMSUID /* in case script is not readable before setuid */
2815 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
2816 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2819 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT,
2820 BIN_EXP, (int)PERL_REVISION,
2822 (int)PERL_SUBVERSION), PL_origargv);
2823 Perl_croak(aTHX_ "Can't do setuid\n");
2829 Perl_croak(aTHX_ "Can't open perl script: %s\n",
2832 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
2833 CopFILE(PL_curcop), Strerror(errno));
2839 * I_SYSSTATVFS HAS_FSTATVFS
2841 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
2842 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2843 * here so that metaconfig picks them up. */
2847 S_fd_on_nosuid_fs(pTHX_ int fd)
2849 int check_okay = 0; /* able to do all the required sys/libcalls */
2850 int on_nosuid = 0; /* the fd is on a nosuid fs */
2852 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
2853 * fstatvfs() is UNIX98.
2854 * fstatfs() is 4.3 BSD.
2855 * ustat()+getmnt() is pre-4.3 BSD.
2856 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2857 * an irrelevant filesystem while trying to reach the right one.
2860 #undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2862 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2863 defined(HAS_FSTATVFS)
2864 # define FD_ON_NOSUID_CHECK_OKAY
2865 struct statvfs stfs;
2867 check_okay = fstatvfs(fd, &stfs) == 0;
2868 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
2869 # endif /* fstatvfs */
2871 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2872 defined(PERL_MOUNT_NOSUID) && \
2873 defined(HAS_FSTATFS) && \
2874 defined(HAS_STRUCT_STATFS) && \
2875 defined(HAS_STRUCT_STATFS_F_FLAGS)
2876 # define FD_ON_NOSUID_CHECK_OKAY
2879 check_okay = fstatfs(fd, &stfs) == 0;
2880 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
2881 # endif /* fstatfs */
2883 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2884 defined(PERL_MOUNT_NOSUID) && \
2885 defined(HAS_FSTAT) && \
2886 defined(HAS_USTAT) && \
2887 defined(HAS_GETMNT) && \
2888 defined(HAS_STRUCT_FS_DATA) && \
2890 # define FD_ON_NOSUID_CHECK_OKAY
2893 if (fstat(fd, &fdst) == 0) {
2895 if (ustat(fdst.st_dev, &us) == 0) {
2897 /* NOSTAT_ONE here because we're not examining fields which
2898 * vary between that case and STAT_ONE. */
2899 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
2900 size_t cmplen = sizeof(us.f_fname);
2901 if (sizeof(fsd.fd_req.path) < cmplen)
2902 cmplen = sizeof(fsd.fd_req.path);
2903 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2904 fdst.st_dev == fsd.fd_req.dev) {
2906 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2912 # endif /* fstat+ustat+getmnt */
2914 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2915 defined(HAS_GETMNTENT) && \
2916 defined(HAS_HASMNTOPT) && \
2917 defined(MNTOPT_NOSUID)
2918 # define FD_ON_NOSUID_CHECK_OKAY
2919 FILE *mtab = fopen("/etc/mtab", "r");
2920 struct mntent *entry;
2921 struct stat stb, fsb;
2923 if (mtab && (fstat(fd, &stb) == 0)) {
2924 while (entry = getmntent(mtab)) {
2925 if (stat(entry->mnt_dir, &fsb) == 0
2926 && fsb.st_dev == stb.st_dev)
2928 /* found the filesystem */
2930 if (hasmntopt(entry, MNTOPT_NOSUID))
2933 } /* A single fs may well fail its stat(). */
2938 # endif /* getmntent+hasmntopt */
2941 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
2944 #endif /* IAMSUID */
2947 S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
2953 /* do we need to emulate setuid on scripts? */
2955 /* This code is for those BSD systems that have setuid #! scripts disabled
2956 * in the kernel because of a security problem. Merely defining DOSUID
2957 * in perl will not fix that problem, but if you have disabled setuid
2958 * scripts in the kernel, this will attempt to emulate setuid and setgid
2959 * on scripts that have those now-otherwise-useless bits set. The setuid
2960 * root version must be called suidperl or sperlN.NNN. If regular perl
2961 * discovers that it has opened a setuid script, it calls suidperl with
2962 * the same argv that it had. If suidperl finds that the script it has
2963 * just opened is NOT setuid root, it sets the effective uid back to the
2964 * uid. We don't just make perl setuid root because that loses the
2965 * effective uid we had before invoking perl, if it was different from the
2968 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2969 * be defined in suidperl only. suidperl must be setuid root. The
2970 * Configure script will set this up for you if you want it.
2976 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
2977 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
2978 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
2983 #ifndef HAS_SETREUID
2984 /* On this access check to make sure the directories are readable,
2985 * there is actually a small window that the user could use to make
2986 * filename point to an accessible directory. So there is a faint
2987 * chance that someone could execute a setuid script down in a
2988 * non-accessible directory. I don't know what to do about that.
2989 * But I don't think it's too important. The manual lies when
2990 * it says access() is useful in setuid programs.
2992 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
2993 Perl_croak(aTHX_ "Permission denied");
2995 /* If we can swap euid and uid, then we can determine access rights
2996 * with a simple stat of the file, and then compare device and
2997 * inode to make sure we did stat() on the same file we opened.
2998 * Then we just have to make sure he or she can execute it.
3001 struct stat tmpstatbuf;
3005 setreuid(PL_euid,PL_uid) < 0
3008 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
3011 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
3012 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
3013 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
3014 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
3015 #if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
3016 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
3017 Perl_croak(aTHX_ "Permission denied");
3019 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
3020 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
3021 (void)PerlIO_close(PL_rsfp);
3022 Perl_croak(aTHX_ "Permission denied\n");
3026 setreuid(PL_uid,PL_euid) < 0
3028 # if defined(HAS_SETRESUID)
3029 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
3032 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
3033 Perl_croak(aTHX_ "Can't reswap uid and euid");
3034 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
3035 Perl_croak(aTHX_ "Permission denied\n");
3037 #endif /* HAS_SETREUID */
3038 #endif /* IAMSUID */
3040 if (!S_ISREG(PL_statbuf.st_mode))
3041 Perl_croak(aTHX_ "Permission denied");
3042 if (PL_statbuf.st_mode & S_IWOTH)
3043 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
3044 PL_doswitches = FALSE; /* -s is insecure in suid */
3045 CopLINE_inc(PL_curcop);
3046 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
3047 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
3048 Perl_croak(aTHX_ "No #! line");
3049 s = SvPV(PL_linestr,n_a)+2;
3051 while (!isSPACE(*s)) s++;
3052 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
3053 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
3054 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
3055 Perl_croak(aTHX_ "Not a perl script");
3056 while (*s == ' ' || *s == '\t') s++;
3058 * #! arg must be what we saw above. They can invoke it by
3059 * mentioning suidperl explicitly, but they may not add any strange
3060 * arguments beyond what #! says if they do invoke suidperl that way.
3062 len = strlen(validarg);
3063 if (strEQ(validarg," PHOOEY ") ||
3064 strnNE(s,validarg,len) || !isSPACE(s[len]))
3065 Perl_croak(aTHX_ "Args must match #! line");
3068 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
3069 PL_euid == PL_statbuf.st_uid)
3071 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3072 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3073 #endif /* IAMSUID */
3075 if (PL_euid) { /* oops, we're not the setuid root perl */
3076 (void)PerlIO_close(PL_rsfp);
3079 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
3080 (int)PERL_REVISION, (int)PERL_VERSION,
3081 (int)PERL_SUBVERSION), PL_origargv);
3083 Perl_croak(aTHX_ "Can't do setuid\n");
3086 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
3088 (void)setegid(PL_statbuf.st_gid);
3091 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
3093 #ifdef HAS_SETRESGID
3094 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
3096 PerlProc_setgid(PL_statbuf.st_gid);
3100 if (PerlProc_getegid() != PL_statbuf.st_gid)
3101 Perl_croak(aTHX_ "Can't do setegid!\n");
3103 if (PL_statbuf.st_mode & S_ISUID) {
3104 if (PL_statbuf.st_uid != PL_euid)
3106 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
3109 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
3111 #ifdef HAS_SETRESUID
3112 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
3114 PerlProc_setuid(PL_statbuf.st_uid);
3118 if (PerlProc_geteuid() != PL_statbuf.st_uid)
3119 Perl_croak(aTHX_ "Can't do seteuid!\n");
3121 else if (PL_uid) { /* oops, mustn't run as root */
3123 (void)seteuid((Uid_t)PL_uid);
3126 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
3128 #ifdef HAS_SETRESUID
3129 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
3131 PerlProc_setuid((Uid_t)PL_uid);
3135 if (PerlProc_geteuid() != PL_uid)
3136 Perl_croak(aTHX_ "Can't do seteuid!\n");
3139 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
3140 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
3143 else if (PL_preprocess)
3144 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
3145 else if (fdscript >= 0)
3146 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
3148 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
3150 /* We absolutely must clear out any saved ids here, so we */
3151 /* exec the real perl, substituting fd script for scriptname. */
3152 /* (We pass script name as "subdir" of fd, which perl will grok.) */
3153 PerlIO_rewind(PL_rsfp);
3154 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
3155 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3156 if (!PL_origargv[which])
3157 Perl_croak(aTHX_ "Permission denied");
3158 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
3159 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
3160 #if defined(HAS_FCNTL) && defined(F_SETFD)
3161 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
3163 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
3164 (int)PERL_REVISION, (int)PERL_VERSION,
3165 (int)PERL_SUBVERSION), PL_origargv);/* try again */
3166 Perl_croak(aTHX_ "Can't do setuid\n");
3167 #endif /* IAMSUID */
3169 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
3170 #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
3171 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3172 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3174 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3177 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3178 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3179 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3180 /* not set-id, must be wrapped */
3186 S_find_beginning(pTHX)
3188 register char *s, *s2;
3190 /* skip forward in input to the real script? */
3193 #ifdef MACOS_TRADITIONAL
3194 /* Since the Mac OS does not honor #! arguments for us, we do it ourselves */
3196 while (PL_doextract || gMacPerl_AlwaysExtract) {
3197 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3198 if (!gMacPerl_AlwaysExtract)
3199 Perl_croak(aTHX_ "No Perl script found in input\n");
3201 if (PL_doextract) /* require explicit override ? */
3202 if (!OverrideExtract(PL_origfilename))
3203 Perl_croak(aTHX_ "User aborted script\n");
3205 PL_doextract = FALSE;
3207 /* Pater peccavi, file does not have #! */
3208 PerlIO_rewind(PL_rsfp);
3213 while (PL_doextract) {
3214 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
3215 Perl_croak(aTHX_ "No Perl script found in input\n");
3218 if (*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))) {
3219 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3220 PL_doextract = FALSE;
3221 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3223 while (*s == ' ' || *s == '\t') s++;
3225 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3226 if (strnEQ(s2-4,"perl",4))
3228 while ((s = moreswitches(s)))
3231 #ifdef MACOS_TRADITIONAL
3242 PL_uid = PerlProc_getuid();
3243 PL_euid = PerlProc_geteuid();
3244 PL_gid = PerlProc_getgid();
3245 PL_egid = PerlProc_getegid();
3247 PL_uid |= PL_gid << 16;
3248 PL_euid |= PL_egid << 16;
3250 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3254 S_forbid_setid(pTHX_ char *s)
3256 if (PL_euid != PL_uid)
3257 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3258 if (PL_egid != PL_gid)
3259 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
3263 Perl_init_debugger(pTHX)
3265 HV *ostash = PL_curstash;
3267 PL_curstash = PL_debstash;
3268 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3269 AvREAL_off(PL_dbargs);
3270 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3271 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3272 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
3273 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3274 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
3275 sv_setiv(PL_DBsingle, 0);
3276 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
3277 sv_setiv(PL_DBtrace, 0);
3278 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
3279 sv_setiv(PL_DBsignal, 0);
3280 PL_curstash = ostash;
3283 #ifndef STRESS_REALLOC
3284 #define REASONABLE(size) (size)
3286 #define REASONABLE(size) (1) /* unreasonable */
3290 Perl_init_stacks(pTHX)
3292 /* start with 128-item stack and 8K cxstack */
3293 PL_curstackinfo = new_stackinfo(REASONABLE(128),
3294 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3295 PL_curstackinfo->si_type = PERLSI_MAIN;
3296 PL_curstack = PL_curstackinfo->si_stack;
3297 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
3299 PL_stack_base = AvARRAY(PL_curstack);
3300 PL_stack_sp = PL_stack_base;
3301 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
3303 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3306 PL_tmps_max = REASONABLE(128);
3308 New(54,PL_markstack,REASONABLE(32),I32);
3309 PL_markstack_ptr = PL_markstack;
3310 PL_markstack_max = PL_markstack + REASONABLE(32);
3314 New(54,PL_scopestack,REASONABLE(32),I32);
3315 PL_scopestack_ix = 0;
3316 PL_scopestack_max = REASONABLE(32);
3318 New(54,PL_savestack,REASONABLE(128),ANY);
3319 PL_savestack_ix = 0;
3320 PL_savestack_max = REASONABLE(128);
3322 New(54,PL_retstack,REASONABLE(16),OP*);
3324 PL_retstack_max = REASONABLE(16);
3332 while (PL_curstackinfo->si_next)
3333 PL_curstackinfo = PL_curstackinfo->si_next;
3334 while (PL_curstackinfo) {
3335 PERL_SI *p = PL_curstackinfo->si_prev;
3336 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3337 Safefree(PL_curstackinfo->si_cxstack);
3338 Safefree(PL_curstackinfo);
3339 PL_curstackinfo = p;
3341 Safefree(PL_tmps_stack);
3342 Safefree(PL_markstack);
3343 Safefree(PL_scopestack);
3344 Safefree(PL_savestack);
3345 Safefree(PL_retstack);
3354 lex_start(PL_linestr);
3356 PL_subname = newSVpvn("main",4);
3360 S_init_predump_symbols(pTHX)
3365 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3366 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3367 GvMULTI_on(PL_stdingv);
3368 io = GvIOp(PL_stdingv);
3369 IoTYPE(io) = IoTYPE_RDONLY;
3370 IoIFP(io) = PerlIO_stdin();
3371 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
3373 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3375 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
3378 IoTYPE(io) = IoTYPE_WRONLY;
3379 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
3381 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
3383 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3385 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3386 GvMULTI_on(PL_stderrgv);
3387 io = GvIOp(PL_stderrgv);
3388 IoTYPE(io) = IoTYPE_WRONLY;
3389 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
3390 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
3392 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3394 PL_statname = NEWSV(66,0); /* last filename we did stat on */
3397 Safefree(PL_osname);
3398 PL_osname = savepv(OSNAME);
3402 Perl_init_argv_symbols(pTHX_ register int argc, register char **argv)
3405 argc--,argv++; /* skip name of script */
3406 if (PL_doswitches) {
3407 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3410 if (argv[0][1] == '-' && !argv[0][2]) {
3414 if ((s = strchr(argv[0], '='))) {
3416 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
3419 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
3422 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3423 GvMULTI_on(PL_argvgv);
3424 (void)gv_AVadd(PL_argvgv);
3425 av_clear(GvAVn(PL_argvgv));
3426 for (; argc > 0; argc--,argv++) {
3427 SV *sv = newSVpv(argv[0],0);
3428 av_push(GvAVn(PL_argvgv),sv);
3429 if (PL_widesyscalls)
3430 (void)sv_utf8_decode(sv);
3435 #ifdef HAS_PROCSELFEXE
3436 /* This is a function so that we don't hold on to MAXPATHLEN
3437 bytes of stack longer than necessary
3440 S_procself_val(pTHX_ SV *sv, char *arg0)
3442 char buf[MAXPATHLEN];
3443 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
3445 sv_setpvn(sv,buf,len);
3451 #endif /* HAS_PROCSELFEXE */
3454 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
3460 PL_toptarget = NEWSV(0,0);
3461 sv_upgrade(PL_toptarget, SVt_PVFM);
3462 sv_setpvn(PL_toptarget, "", 0);
3463 PL_bodytarget = NEWSV(0,0);
3464 sv_upgrade(PL_bodytarget, SVt_PVFM);
3465 sv_setpvn(PL_bodytarget, "", 0);
3466 PL_formtarget = PL_bodytarget;
3470 init_argv_symbols(argc,argv);
3472 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
3473 #ifdef MACOS_TRADITIONAL
3474 /* $0 is not majick on a Mac */
3475 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3477 sv_setpv(GvSV(tmpgv),PL_origfilename);
3478 magicname("0", "0", 1);
3481 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV))) {/* $^X */
3482 #ifdef HAS_PROCSELFEXE
3483 S_procself_val(aTHX_ GvSV(tmpgv), PL_origargv[0]);
3486 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
3488 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
3492 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
3494 GvMULTI_on(PL_envgv);
3495 hv = GvHVn(PL_envgv);
3496 hv_magic(hv, Nullgv, PERL_MAGIC_env);
3497 #ifdef USE_ENVIRON_ARRAY
3498 /* Note that if the supplied env parameter is actually a copy
3499 of the global environ then it may now point to free'd memory
3500 if the environment has been modified since. To avoid this
3501 problem we treat env==NULL as meaning 'use the default'
3506 environ[0] = Nullch;
3508 for (; *env; env++) {
3509 if (!(s = strchr(*env,'=')))
3516 sv = newSVpv(s+1, 0);
3517 (void)hv_store(hv, *env, s - *env, sv, 0);
3521 #endif /* USE_ENVIRON_ARRAY */
3524 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV))) {
3525 SvREADONLY_off(GvSV(tmpgv));
3526 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
3527 SvREADONLY_on(GvSV(tmpgv));
3532 S_init_perllib(pTHX)
3537 s = PerlEnv_getenv("PERL5LIB");
3539 incpush(s, TRUE, TRUE);
3541 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE);
3543 /* Treat PERL5?LIB as a possible search list logical name -- the
3544 * "natural" VMS idiom for a Unix path string. We allow each
3545 * element to be a set of |-separated directories for compatibility.
3549 if (my_trnlnm("PERL5LIB",buf,0))
3550 do { incpush(buf,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
3552 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE);
3556 /* Use the ~-expanded versions of APPLLIB (undocumented),
3557 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
3560 incpush(APPLLIB_EXP, TRUE, TRUE);
3564 incpush(ARCHLIB_EXP, FALSE, FALSE);
3566 #ifdef MACOS_TRADITIONAL
3568 struct stat tmpstatbuf;
3569 SV * privdir = NEWSV(55, 0);
3570 char * macperl = PerlEnv_getenv("MACPERL");
3575 Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl);
3576 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3577 incpush(SvPVX(privdir), TRUE, FALSE);
3578 Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl);
3579 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3580 incpush(SvPVX(privdir), TRUE, FALSE);
3582 SvREFCNT_dec(privdir);
3585 incpush(":", FALSE, FALSE);
3588 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
3591 incpush(PRIVLIB_EXP, TRUE, FALSE);
3593 incpush(PRIVLIB_EXP, FALSE, FALSE);
3597 /* sitearch is always relative to sitelib on Windows for
3598 * DLL-based path intuition to work correctly */
3599 # if !defined(WIN32)
3600 incpush(SITEARCH_EXP, FALSE, FALSE);
3606 incpush(SITELIB_EXP, TRUE, FALSE); /* this picks up sitearch as well */
3608 incpush(SITELIB_EXP, FALSE, FALSE);
3612 #ifdef SITELIB_STEM /* Search for version-specific dirs below here */
3613 incpush(SITELIB_STEM, FALSE, TRUE);
3616 #ifdef PERL_VENDORARCH_EXP
3617 /* vendorarch is always relative to vendorlib on Windows for
3618 * DLL-based path intuition to work correctly */
3619 # if !defined(WIN32)
3620 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE);
3624 #ifdef PERL_VENDORLIB_EXP
3626 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE); /* this picks up vendorarch as well */
3628 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE);
3632 #ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
3633 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE);
3636 #ifdef PERL_OTHERLIBDIRS
3637 incpush(PERL_OTHERLIBDIRS, TRUE, TRUE);
3641 incpush(".", FALSE, FALSE);
3642 #endif /* MACOS_TRADITIONAL */
3645 #if defined(DOSISH) || defined(EPOC)
3646 # define PERLLIB_SEP ';'
3649 # define PERLLIB_SEP '|'
3651 # if defined(MACOS_TRADITIONAL)
3652 # define PERLLIB_SEP ','
3654 # define PERLLIB_SEP ':'
3658 #ifndef PERLLIB_MANGLE
3659 # define PERLLIB_MANGLE(s,n) (s)
3663 S_incpush(pTHX_ char *p, int addsubdirs, int addoldvers)
3665 SV *subdir = Nullsv;
3670 if (addsubdirs || addoldvers) {
3671 subdir = sv_newmortal();
3674 /* Break at all separators */
3676 SV *libdir = NEWSV(55,0);
3679 /* skip any consecutive separators */
3680 while ( *p == PERLLIB_SEP ) {
3681 /* Uncomment the next line for PATH semantics */
3682 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
3686 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
3687 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
3692 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
3693 p = Nullch; /* break out */
3695 #ifdef MACOS_TRADITIONAL
3696 if (!strchr(SvPVX(libdir), ':'))
3697 sv_insert(libdir, 0, 0, ":", 1);
3698 if (SvPVX(libdir)[SvCUR(libdir)-1] != ':')
3699 sv_catpv(libdir, ":");
3703 * BEFORE pushing libdir onto @INC we may first push version- and
3704 * archname-specific sub-directories.
3706 if (addsubdirs || addoldvers) {
3707 #ifdef PERL_INC_VERSION_LIST
3708 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
3709 const char *incverlist[] = { PERL_INC_VERSION_LIST };
3710 const char **incver;
3712 struct stat tmpstatbuf;
3717 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
3719 while (unix[len-1] == '/') len--; /* Cosmetic */
3720 sv_usepvn(libdir,unix,len);
3723 PerlIO_printf(Perl_error_log,
3724 "Failed to unixify @INC element \"%s\"\n",
3728 #ifdef MACOS_TRADITIONAL
3729 #define PERL_AV_SUFFIX_FMT ""
3730 #define PERL_ARCH_FMT "%s:"
3731 #define PERL_ARCH_FMT_PATH PERL_FS_VER_FMT PERL_AV_SUFFIX_FMT
3733 #define PERL_AV_SUFFIX_FMT "/"
3734 #define PERL_ARCH_FMT "/%s"
3735 #define PERL_ARCH_FMT_PATH PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT
3737 /* .../version/archname if -d .../version/archname */
3738 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH PERL_ARCH_FMT,
3740 (int)PERL_REVISION, (int)PERL_VERSION,
3741 (int)PERL_SUBVERSION, ARCHNAME);
3742 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3743 S_ISDIR(tmpstatbuf.st_mode))
3744 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3746 /* .../version if -d .../version */
3747 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH, libdir,
3748 (int)PERL_REVISION, (int)PERL_VERSION,
3749 (int)PERL_SUBVERSION);
3750 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3751 S_ISDIR(tmpstatbuf.st_mode))
3752 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3754 /* .../archname if -d .../archname */
3755 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, ARCHNAME);
3756 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3757 S_ISDIR(tmpstatbuf.st_mode))
3758 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3761 #ifdef PERL_INC_VERSION_LIST
3763 for (incver = incverlist; *incver; incver++) {
3764 /* .../xxx if -d .../xxx */
3765 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, *incver);
3766 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3767 S_ISDIR(tmpstatbuf.st_mode))
3768 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3774 /* finally push this lib directory on the end of @INC */
3775 av_push(GvAVn(PL_incgv), libdir);
3779 #ifdef USE_5005THREADS
3780 STATIC struct perl_thread *
3781 S_init_main_thread(pTHX)
3783 #if !defined(PERL_IMPLICIT_CONTEXT)
3784 struct perl_thread *thr;
3788 Newz(53, thr, 1, struct perl_thread);
3789 PL_curcop = &PL_compiling;
3790 thr->interp = PERL_GET_INTERP;
3791 thr->cvcache = newHV();
3792 thr->threadsv = newAV();
3793 /* thr->threadsvp is set when find_threadsv is called */
3794 thr->specific = newAV();
3795 thr->flags = THRf_R_JOINABLE;
3796 MUTEX_INIT(&thr->mutex);
3797 /* Handcraft thrsv similarly to mess_sv */
3798 New(53, PL_thrsv, 1, SV);
3799 Newz(53, xpv, 1, XPV);
3800 SvFLAGS(PL_thrsv) = SVt_PV;
3801 SvANY(PL_thrsv) = (void*)xpv;
3802 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
3803 SvPVX(PL_thrsv) = (char*)thr;
3804 SvCUR_set(PL_thrsv, sizeof(thr));
3805 SvLEN_set(PL_thrsv, sizeof(thr));
3806 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
3807 thr->oursv = PL_thrsv;
3808 PL_chopset = " \n-";
3811 MUTEX_LOCK(&PL_threads_mutex);
3817 MUTEX_UNLOCK(&PL_threads_mutex);
3819 #ifdef HAVE_THREAD_INTERN
3820 Perl_init_thread_intern(thr);
3823 #ifdef SET_THREAD_SELF
3824 SET_THREAD_SELF(thr);
3826 thr->self = pthread_self();
3827 #endif /* SET_THREAD_SELF */
3831 * These must come after the thread self setting
3832 * because sv_setpvn does SvTAINT and the taint
3833 * fields thread selfness being set.
3835 PL_toptarget = NEWSV(0,0);
3836 sv_upgrade(PL_toptarget, SVt_PVFM);
3837 sv_setpvn(PL_toptarget, "", 0);
3838 PL_bodytarget = NEWSV(0,0);
3839 sv_upgrade(PL_bodytarget, SVt_PVFM);
3840 sv_setpvn(PL_bodytarget, "", 0);
3841 PL_formtarget = PL_bodytarget;
3842 thr->errsv = newSVpvn("", 0);
3843 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
3846 PL_peepp = MEMBER_TO_FPTR(Perl_peep);
3847 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3848 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3849 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3850 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3851 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
3853 PL_reginterp_cnt = 0;
3857 #endif /* USE_5005THREADS */
3860 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
3863 line_t oldline = CopLINE(PL_curcop);
3869 while (AvFILL(paramList) >= 0) {
3870 cv = (CV*)av_shift(paramList);
3871 if (PL_savebegin && (paramList == PL_beginav)) {
3872 /* save PL_beginav for compiler */
3873 if (! PL_beginav_save)
3874 PL_beginav_save = newAV();
3875 av_push(PL_beginav_save, (SV*)cv);
3879 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3880 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_list_body), cv);
3886 #ifndef PERL_FLEXIBLE_EXCEPTIONS
3890 (void)SvPV(atsv, len);
3893 PL_curcop = &PL_compiling;
3894 CopLINE_set(PL_curcop, oldline);
3895 if (paramList == PL_beginav)
3896 sv_catpv(atsv, "BEGIN failed--compilation aborted");
3898 Perl_sv_catpvf(aTHX_ atsv,
3899 "%s failed--call queue aborted",
3900 paramList == PL_checkav ? "CHECK"
3901 : paramList == PL_initav ? "INIT"
3903 while (PL_scopestack_ix > oldscope)
3906 Perl_croak(aTHX_ "%s", SvPVx(atsv, n_a));
3913 /* my_exit() was called */
3914 while (PL_scopestack_ix > oldscope)
3917 PL_curstash = PL_defstash;
3918 PL_curcop = &PL_compiling;
3919 CopLINE_set(PL_curcop, oldline);
3921 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
3922 if (paramList == PL_beginav)
3923 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
3925 Perl_croak(aTHX_ "%s failed--call queue aborted",
3926 paramList == PL_checkav ? "CHECK"
3927 : paramList == PL_initav ? "INIT"
3934 PL_curcop = &PL_compiling;
3935 CopLINE_set(PL_curcop, oldline);
3938 PerlIO_printf(Perl_error_log, "panic: restartop\n");
3946 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3948 S_vcall_list_body(pTHX_ va_list args)
3950 CV *cv = va_arg(args, CV*);
3951 return call_list_body(cv);
3956 S_call_list_body(pTHX_ CV *cv)
3958 PUSHMARK(PL_stack_sp);
3959 call_sv((SV*)cv, G_EVAL|G_DISCARD);
3964 Perl_my_exit(pTHX_ U32 status)
3966 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
3967 thr, (unsigned long) status));
3976 STATUS_NATIVE_SET(status);
3983 Perl_my_failure_exit(pTHX)
3986 if (vaxc$errno & 1) {
3987 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
3988 STATUS_NATIVE_SET(44);
3991 if (!vaxc$errno && errno) /* unlikely */
3992 STATUS_NATIVE_SET(44);
3994 STATUS_NATIVE_SET(vaxc$errno);
3999 STATUS_POSIX_SET(errno);
4001 exitstatus = STATUS_POSIX >> 8;
4002 if (exitstatus & 255)
4003 STATUS_POSIX_SET(exitstatus);
4005 STATUS_POSIX_SET(255);
4012 S_my_exit_jump(pTHX)
4014 register PERL_CONTEXT *cx;
4019 SvREFCNT_dec(PL_e_script);
4020 PL_e_script = Nullsv;
4023 POPSTACK_TO(PL_mainstack);
4024 if (cxstack_ix >= 0) {
4027 POPBLOCK(cx,PL_curpm);
4035 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen)
4038 p = SvPVX(PL_e_script);
4039 nl = strchr(p, '\n');
4040 nl = (nl) ? nl+1 : SvEND(PL_e_script);
4042 filter_del(read_e_script);
4045 sv_catpvn(buf_sv, p, nl-p);
4046 sv_chop(PL_e_script, nl);