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_ packWARN(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_ packWARN(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_ packWARN(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_ packWARN(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_ packWARN(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_ packWARN(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 Perl_reentrant_free(aTHX);
843 /* As the absolutely last thing, free the non-arena SV for mess() */
846 /* it could have accumulated taint magic */
847 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
850 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
851 moremagic = mg->mg_moremagic;
852 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
854 Safefree(mg->mg_ptr);
858 /* we know that type >= SVt_PV */
859 (void)SvOOK_off(PL_mess_sv);
860 Safefree(SvPVX(PL_mess_sv));
861 Safefree(SvANY(PL_mess_sv));
862 Safefree(PL_mess_sv);
865 return STATUS_NATIVE_EXPORT;
869 =for apidoc perl_free
871 Releases a Perl interpreter. See L<perlembed>.
879 #if defined(WIN32) || defined(NETWARE)
880 # if defined(PERL_IMPLICIT_SYS)
882 void *host = nw_internal_host;
884 void *host = w32_internal_host;
888 nw5_delete_internal_host(host);
890 win32_delete_internal_host(host);
901 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
903 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
904 PL_exitlist[PL_exitlistlen].fn = fn;
905 PL_exitlist[PL_exitlistlen].ptr = ptr;
910 =for apidoc perl_parse
912 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
918 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
923 #ifdef USE_5005THREADS
927 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
930 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
931 setuid perl scripts securely.\n");
937 /* we copy rather than point to argv
938 * since perl_clone will copy and perl_destruct
939 * has no way of knowing if we've made a copy or
943 New(0, PL_origargv, i+1, char*);
944 PL_origargv[i] = '\0';
946 PL_origargv[i] = savepv(argv[i]);
954 /* Come here if running an undumped a.out. */
956 PL_origfilename = savepv(argv[0]);
957 PL_do_undump = FALSE;
958 cxstack_ix = -1; /* start label stack again */
960 init_postdump_symbols(argc,argv,env);
965 PL_curpad = AvARRAY(PL_comppad);
966 op_free(PL_main_root);
967 PL_main_root = Nullop;
969 PL_main_start = Nullop;
970 SvREFCNT_dec(PL_main_cv);
974 oldscope = PL_scopestack_ix;
975 PL_dowarn = G_WARN_OFF;
977 #ifdef PERL_FLEXIBLE_EXCEPTIONS
978 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
984 #ifndef PERL_FLEXIBLE_EXCEPTIONS
985 parse_body(env,xsinit);
988 call_list(oldscope, PL_checkav);
995 /* my_exit() was called */
996 while (PL_scopestack_ix > oldscope)
999 PL_curstash = PL_defstash;
1001 call_list(oldscope, PL_checkav);
1002 ret = STATUS_NATIVE_EXPORT;
1005 PerlIO_printf(Perl_error_log, "panic: top_env\n");
1013 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1015 S_vparse_body(pTHX_ va_list args)
1017 char **env = va_arg(args, char**);
1018 XSINIT_t xsinit = va_arg(args, XSINIT_t);
1020 return parse_body(env, xsinit);
1025 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
1027 int argc = PL_origargc;
1028 char **argv = PL_origargv;
1029 char *scriptname = NULL;
1031 VOL bool dosearch = FALSE;
1032 char *validarg = "";
1036 char *cddir = Nullch;
1038 sv_setpvn(PL_linestr,"",0);
1039 sv = newSVpvn("",0); /* first used for -I flags */
1043 for (argc--,argv++; argc > 0; argc--,argv++) {
1044 if (argv[0][0] != '-' || !argv[0][1])
1048 validarg = " PHOOEY ";
1057 win32_argv2utf8(argc-1, argv+1);
1060 #ifndef PERL_STRICT_CR
1084 if ((s = moreswitches(s)))
1089 if( !PL_tainting ) {
1090 PL_taint_warn = TRUE;
1097 PL_taint_warn = FALSE;
1102 #ifdef MACOS_TRADITIONAL
1103 /* ignore -e for Dev:Pseudo argument */
1104 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
1107 if (PL_euid != PL_uid || PL_egid != PL_gid)
1108 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
1110 PL_e_script = newSVpvn("",0);
1111 filter_add(read_e_script, NULL);
1114 sv_catpv(PL_e_script, s);
1116 sv_catpv(PL_e_script, argv[1]);
1120 Perl_croak(aTHX_ "No code specified for -e");
1121 sv_catpv(PL_e_script, "\n");
1124 case 'I': /* -I handled both here and in moreswitches() */
1126 if (!*++s && (s=argv[1]) != Nullch) {
1131 STRLEN len = strlen(s);
1132 p = savepvn(s, len);
1133 incpush(p, TRUE, TRUE);
1134 sv_catpvn(sv, "-I", 2);
1135 sv_catpvn(sv, p, len);
1136 sv_catpvn(sv, " ", 1);
1140 Perl_croak(aTHX_ "No directory specified for -I");
1144 PL_preprocess = TRUE;
1154 PL_preambleav = newAV();
1155 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
1157 PL_Sv = newSVpv("print myconfig();",0);
1159 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
1161 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
1163 sv_catpv(PL_Sv,"\" Compile-time options:");
1165 sv_catpv(PL_Sv," DEBUGGING");
1167 # ifdef MULTIPLICITY
1168 sv_catpv(PL_Sv," MULTIPLICITY");
1170 # ifdef USE_5005THREADS
1171 sv_catpv(PL_Sv," USE_5005THREADS");
1173 # ifdef USE_ITHREADS
1174 sv_catpv(PL_Sv," USE_ITHREADS");
1176 # ifdef USE_64_BIT_INT
1177 sv_catpv(PL_Sv," USE_64_BIT_INT");
1179 # ifdef USE_64_BIT_ALL
1180 sv_catpv(PL_Sv," USE_64_BIT_ALL");
1182 # ifdef USE_LONG_DOUBLE
1183 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1185 # ifdef USE_LARGE_FILES
1186 sv_catpv(PL_Sv," USE_LARGE_FILES");
1189 sv_catpv(PL_Sv," USE_SOCKS");
1191 # ifdef PERL_IMPLICIT_CONTEXT
1192 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1194 # ifdef PERL_IMPLICIT_SYS
1195 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1197 sv_catpv(PL_Sv,"\\n\",");
1199 #if defined(LOCAL_PATCH_COUNT)
1200 if (LOCAL_PATCH_COUNT > 0) {
1202 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
1203 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1204 if (PL_localpatches[i])
1205 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
1209 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
1212 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
1214 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
1217 sv_catpv(PL_Sv, "; \
1219 @env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; ");
1222 push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
1225 print \" \\%ENV:\\n @env\\n\" if @env; \
1226 print \" \\@INC:\\n @INC\\n\";");
1229 PL_Sv = newSVpv("config_vars(qw(",0);
1230 sv_catpv(PL_Sv, ++s);
1231 sv_catpv(PL_Sv, "))");
1234 av_push(PL_preambleav, PL_Sv);
1235 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1238 PL_doextract = TRUE;
1246 if (!*++s || isSPACE(*s)) {
1250 /* catch use of gnu style long options */
1251 if (strEQ(s, "version")) {
1255 if (strEQ(s, "help")) {
1262 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1268 #ifndef SECURE_INTERNAL_GETENV
1271 (s = PerlEnv_getenv("PERL5OPT")))
1276 if (*s == '-' && *(s+1) == 'T') {
1278 PL_taint_warn = FALSE;
1281 char *popt_copy = Nullch;
1294 if (!strchr("DIMUdmtw", *s))
1295 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
1299 popt_copy = SvPVX(sv_2mortal(newSVpv(popt,0)));
1300 s = popt_copy + (s - popt);
1301 d = popt_copy + (d - popt);
1308 if( !PL_tainting ) {
1309 PL_taint_warn = TRUE;
1319 if (PL_taint_warn && PL_dowarn != G_WARN_ALL_OFF) {
1320 PL_compiling.cop_warnings = newSVpvn(WARN_TAINTstring, WARNsize);
1324 scriptname = argv[0];
1327 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1329 else if (scriptname == Nullch) {
1331 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1339 open_script(scriptname,dosearch,sv,&fdscript);
1341 validate_suid(validarg, scriptname,fdscript);
1344 #if defined(SIGCHLD) || defined(SIGCLD)
1347 # define SIGCHLD SIGCLD
1349 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1350 if (sigstate == SIG_IGN) {
1351 if (ckWARN(WARN_SIGNAL))
1352 Perl_warner(aTHX_ packWARN(WARN_SIGNAL),
1353 "Can't ignore signal CHLD, forcing to default");
1354 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1360 #ifdef MACOS_TRADITIONAL
1361 if (PL_doextract || gMacPerl_AlwaysExtract) {
1366 if (cddir && PerlDir_chdir(cddir) < 0)
1367 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1371 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1372 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1373 CvUNIQUE_on(PL_compcv);
1375 PL_comppad = newAV();
1376 av_push(PL_comppad, Nullsv);
1377 PL_curpad = AvARRAY(PL_comppad);
1378 PL_comppad_name = newAV();
1379 PL_comppad_name_fill = 0;
1380 PL_min_intro_pending = 0;
1382 #ifdef USE_5005THREADS
1383 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
1384 PL_curpad[0] = (SV*)newAV();
1385 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1386 CvOWNER(PL_compcv) = 0;
1387 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1388 MUTEX_INIT(CvMUTEXP(PL_compcv));
1389 #endif /* USE_5005THREADS */
1391 comppadlist = newAV();
1392 AvREAL_off(comppadlist);
1393 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1394 av_store(comppadlist, 1, (SV*)PL_comppad);
1395 CvPADLIST(PL_compcv) = comppadlist;
1398 boot_core_UNIVERSAL();
1400 boot_core_xsutils();
1404 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
1406 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
1412 # ifdef HAS_SOCKS5_INIT
1413 socks5_init(argv[0]);
1419 init_predump_symbols();
1420 /* init_postdump_symbols not currently designed to be called */
1421 /* more than once (ENV isn't cleared first, for example) */
1422 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
1424 init_postdump_symbols(argc,argv,env);
1428 /* now parse the script */
1430 SETERRNO(0,SS$_NORMAL);
1432 #ifdef MACOS_TRADITIONAL
1433 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1435 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1437 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1438 MacPerl_MPWFileName(PL_origfilename));
1442 if (yyparse() || PL_error_count) {
1444 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
1446 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1451 CopLINE_set(PL_curcop, 0);
1452 PL_curstash = PL_defstash;
1453 PL_preprocess = FALSE;
1455 SvREFCNT_dec(PL_e_script);
1456 PL_e_script = Nullsv;
1460 Not sure that this is still the right place to do this now that we
1461 no longer use PL_nrs. HVDS 2001/09/09
1463 sv_setsv(get_sv("/", TRUE), PL_rs);
1469 SAVECOPFILE(PL_curcop);
1470 SAVECOPLINE(PL_curcop);
1471 gv_check(PL_defstash);
1478 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1479 dump_mstats("after compilation:");
1488 =for apidoc perl_run
1490 Tells a Perl interpreter to run. See L<perlembed>.
1501 #ifdef USE_5005THREADS
1505 oldscope = PL_scopestack_ix;
1510 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1512 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1518 cxstack_ix = -1; /* start context stack again */
1520 case 0: /* normal completion */
1521 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1526 case 2: /* my_exit() */
1527 while (PL_scopestack_ix > oldscope)
1530 PL_curstash = PL_defstash;
1531 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
1532 PL_endav && !PL_minus_c)
1533 call_list(oldscope, PL_endav);
1535 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1536 dump_mstats("after execution: ");
1538 ret = STATUS_NATIVE_EXPORT;
1542 POPSTACK_TO(PL_mainstack);
1545 PerlIO_printf(Perl_error_log, "panic: restartop\n");
1555 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1557 S_vrun_body(pTHX_ va_list args)
1559 I32 oldscope = va_arg(args, I32);
1561 return run_body(oldscope);
1567 S_run_body(pTHX_ I32 oldscope)
1569 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
1570 PL_sawampersand ? "Enabling" : "Omitting"));
1572 if (!PL_restartop) {
1573 DEBUG_x(dump_all());
1574 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
1575 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1579 #ifdef MACOS_TRADITIONAL
1580 PerlIO_printf(Perl_error_log, "# %s syntax OK\n", MacPerl_MPWFileName(PL_origfilename));
1582 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
1586 if (PERLDB_SINGLE && PL_DBsingle)
1587 sv_setiv(PL_DBsingle, 1);
1589 call_list(oldscope, PL_initav);
1595 PL_op = PL_restartop;
1599 else if (PL_main_start) {
1600 CvDEPTH(PL_main_cv) = 1;
1601 PL_op = PL_main_start;
1611 =head1 SV Manipulation Functions
1613 =for apidoc p||get_sv
1615 Returns the SV of the specified Perl scalar. If C<create> is set and the
1616 Perl variable does not exist then it will be created. If C<create> is not
1617 set and the variable does not exist then NULL is returned.
1623 Perl_get_sv(pTHX_ const char *name, I32 create)
1626 #ifdef USE_5005THREADS
1627 if (name[1] == '\0' && !isALPHA(name[0])) {
1628 PADOFFSET tmp = find_threadsv(name);
1629 if (tmp != NOT_IN_PAD)
1630 return THREADSV(tmp);
1632 #endif /* USE_5005THREADS */
1633 gv = gv_fetchpv(name, create, SVt_PV);
1640 =head1 Array Manipulation Functions
1642 =for apidoc p||get_av
1644 Returns the AV of the specified Perl array. If C<create> is set and the
1645 Perl variable does not exist then it will be created. If C<create> is not
1646 set and the variable does not exist then NULL is returned.
1652 Perl_get_av(pTHX_ const char *name, I32 create)
1654 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1663 =head1 Hash Manipulation Functions
1665 =for apidoc p||get_hv
1667 Returns the HV of the specified Perl hash. If C<create> is set and the
1668 Perl variable does not exist then it will be created. If C<create> is not
1669 set and the variable does not exist then NULL is returned.
1675 Perl_get_hv(pTHX_ const char *name, I32 create)
1677 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1686 =head1 CV Manipulation Functions
1688 =for apidoc p||get_cv
1690 Returns the CV of the specified Perl subroutine. If C<create> is set and
1691 the Perl subroutine does not exist then it will be declared (which has the
1692 same effect as saying C<sub name;>). If C<create> is not set and the
1693 subroutine does not exist then NULL is returned.
1699 Perl_get_cv(pTHX_ const char *name, I32 create)
1701 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
1702 /* XXX unsafe for threads if eval_owner isn't held */
1703 /* XXX this is probably not what they think they're getting.
1704 * It has the same effect as "sub name;", i.e. just a forward
1706 if (create && !GvCVu(gv))
1707 return newSUB(start_subparse(FALSE, 0),
1708 newSVOP(OP_CONST, 0, newSVpv(name,0)),
1716 /* Be sure to refetch the stack pointer after calling these routines. */
1720 =head1 Callback Functions
1722 =for apidoc p||call_argv
1724 Performs a callback to the specified Perl sub. See L<perlcall>.
1730 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
1732 /* See G_* flags in cop.h */
1733 /* null terminated arg list */
1740 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
1745 return call_pv(sub_name, flags);
1749 =for apidoc p||call_pv
1751 Performs a callback to the specified Perl sub. See L<perlcall>.
1757 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
1758 /* name of the subroutine */
1759 /* See G_* flags in cop.h */
1761 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
1765 =for apidoc p||call_method
1767 Performs a callback to the specified Perl method. The blessed object must
1768 be on the stack. See L<perlcall>.
1774 Perl_call_method(pTHX_ const char *methname, I32 flags)
1775 /* name of the subroutine */
1776 /* See G_* flags in cop.h */
1778 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
1781 /* May be called with any of a CV, a GV, or an SV containing the name. */
1783 =for apidoc p||call_sv
1785 Performs a callback to the Perl sub whose name is in the SV. See
1792 Perl_call_sv(pTHX_ SV *sv, I32 flags)
1793 /* See G_* flags in cop.h */
1796 LOGOP myop; /* fake syntax tree node */
1799 volatile I32 retval = 0;
1801 bool oldcatch = CATCH_GET;
1806 if (flags & G_DISCARD) {
1811 Zero(&myop, 1, LOGOP);
1812 myop.op_next = Nullop;
1813 if (!(flags & G_NOARGS))
1814 myop.op_flags |= OPf_STACKED;
1815 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1816 (flags & G_ARRAY) ? OPf_WANT_LIST :
1821 EXTEND(PL_stack_sp, 1);
1822 *++PL_stack_sp = sv;
1824 oldscope = PL_scopestack_ix;
1826 if (PERLDB_SUB && PL_curstash != PL_debstash
1827 /* Handle first BEGIN of -d. */
1828 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
1829 /* Try harder, since this may have been a sighandler, thus
1830 * curstash may be meaningless. */
1831 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
1832 && !(flags & G_NODEBUG))
1833 PL_op->op_private |= OPpENTERSUB_DB;
1835 if (flags & G_METHOD) {
1836 Zero(&method_op, 1, UNOP);
1837 method_op.op_next = PL_op;
1838 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1839 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
1840 PL_op = (OP*)&method_op;
1843 if (!(flags & G_EVAL)) {
1845 call_body((OP*)&myop, FALSE);
1846 retval = PL_stack_sp - (PL_stack_base + oldmark);
1847 CATCH_SET(oldcatch);
1850 myop.op_other = (OP*)&myop;
1852 /* we're trying to emulate pp_entertry() here */
1854 register PERL_CONTEXT *cx;
1855 I32 gimme = GIMME_V;
1860 push_return(Nullop);
1861 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
1863 PL_eval_root = PL_op; /* Only needed so that goto works right. */
1865 PL_in_eval = EVAL_INEVAL;
1866 if (flags & G_KEEPERR)
1867 PL_in_eval |= EVAL_KEEPERR;
1873 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1875 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1882 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1884 call_body((OP*)&myop, FALSE);
1886 retval = PL_stack_sp - (PL_stack_base + oldmark);
1887 if (!(flags & G_KEEPERR))
1894 /* my_exit() was called */
1895 PL_curstash = PL_defstash;
1898 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1899 Perl_croak(aTHX_ "Callback called exit");
1904 PL_op = PL_restartop;
1908 PL_stack_sp = PL_stack_base + oldmark;
1909 if (flags & G_ARRAY)
1913 *++PL_stack_sp = &PL_sv_undef;
1918 if (PL_scopestack_ix > oldscope) {
1922 register PERL_CONTEXT *cx;
1934 if (flags & G_DISCARD) {
1935 PL_stack_sp = PL_stack_base + oldmark;
1944 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1946 S_vcall_body(pTHX_ va_list args)
1948 OP *myop = va_arg(args, OP*);
1949 int is_eval = va_arg(args, int);
1951 call_body(myop, is_eval);
1957 S_call_body(pTHX_ OP *myop, int is_eval)
1959 if (PL_op == myop) {
1961 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
1963 PL_op = Perl_pp_entersub(aTHX); /* this does */
1969 /* Eval a string. The G_EVAL flag is always assumed. */
1972 =for apidoc p||eval_sv
1974 Tells Perl to C<eval> the string in the SV.
1980 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
1982 /* See G_* flags in cop.h */
1985 UNOP myop; /* fake syntax tree node */
1986 volatile I32 oldmark = SP - PL_stack_base;
1987 volatile I32 retval = 0;
1993 if (flags & G_DISCARD) {
2000 Zero(PL_op, 1, UNOP);
2001 EXTEND(PL_stack_sp, 1);
2002 *++PL_stack_sp = sv;
2003 oldscope = PL_scopestack_ix;
2005 if (!(flags & G_NOARGS))
2006 myop.op_flags = OPf_STACKED;
2007 myop.op_next = Nullop;
2008 myop.op_type = OP_ENTEREVAL;
2009 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
2010 (flags & G_ARRAY) ? OPf_WANT_LIST :
2012 if (flags & G_KEEPERR)
2013 myop.op_flags |= OPf_SPECIAL;
2015 #ifdef PERL_FLEXIBLE_EXCEPTIONS
2017 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
2024 #ifndef PERL_FLEXIBLE_EXCEPTIONS
2026 call_body((OP*)&myop,TRUE);
2028 retval = PL_stack_sp - (PL_stack_base + oldmark);
2029 if (!(flags & G_KEEPERR))
2036 /* my_exit() was called */
2037 PL_curstash = PL_defstash;
2040 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
2041 Perl_croak(aTHX_ "Callback called exit");
2046 PL_op = PL_restartop;
2050 PL_stack_sp = PL_stack_base + oldmark;
2051 if (flags & G_ARRAY)
2055 *++PL_stack_sp = &PL_sv_undef;
2061 if (flags & G_DISCARD) {
2062 PL_stack_sp = PL_stack_base + oldmark;
2072 =for apidoc p||eval_pv
2074 Tells Perl to C<eval> the given string and return an SV* result.
2080 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
2083 SV* sv = newSVpv(p, 0);
2085 eval_sv(sv, G_SCALAR);
2092 if (croak_on_error && SvTRUE(ERRSV)) {
2094 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
2100 /* Require a module. */
2103 =head1 Embedding Functions
2105 =for apidoc p||require_pv
2107 Tells Perl to C<require> the file named by the string argument. It is
2108 analogous to the Perl code C<eval "require '$file'">. It's even
2109 implemented that way; consider using Perl_load_module instead.
2114 Perl_require_pv(pTHX_ const char *pv)
2118 PUSHSTACKi(PERLSI_REQUIRE);
2120 sv = sv_newmortal();
2121 sv_setpv(sv, "require '");
2124 eval_sv(sv, G_DISCARD);
2130 Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
2134 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
2135 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
2139 S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
2141 /* This message really ought to be max 23 lines.
2142 * Removed -h because the user already knows that option. Others? */
2144 static char *usage_msg[] = {
2145 "-0[octal] specify record separator (\\0, if no argument)",
2146 "-a autosplit mode with -n or -p (splits $_ into @F)",
2147 "-C enable native wide character system interfaces",
2148 "-c check syntax only (runs BEGIN and CHECK blocks)",
2149 "-d[:debugger] run program under debugger",
2150 "-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2151 "-e 'command' one line of program (several -e's allowed, omit programfile)",
2152 "-F/pattern/ split() pattern for -a switch (//'s are optional)",
2153 "-i[extension] edit <> files in place (makes backup if extension supplied)",
2154 "-Idirectory specify @INC/#include directory (several -I's allowed)",
2155 "-l[octal] enable line ending processing, specifies line terminator",
2156 "-[mM][-]module execute `use/no module...' before executing program",
2157 "-n assume 'while (<>) { ... }' loop around program",
2158 "-p assume loop like -n but print line also, like sed",
2159 "-P run program through C preprocessor before compilation",
2160 "-s enable rudimentary parsing for switches after programfile",
2161 "-S look for programfile using PATH environment variable",
2162 "-T enable tainting checks",
2163 "-t enable tainting warnings",
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_ packWARN(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);
3444 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
3445 returning the text "unknown" from the readlink rather than the path
3446 to the executable (or returning an error from the readlink). Any valid
3447 path has a '/' in it somewhere, so use that to validate the result.
3448 See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
3450 if (len > 0 && memchr(buf, '/', len)) {
3451 sv_setpvn(sv,buf,len);
3457 #endif /* HAS_PROCSELFEXE */
3460 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
3466 PL_toptarget = NEWSV(0,0);
3467 sv_upgrade(PL_toptarget, SVt_PVFM);
3468 sv_setpvn(PL_toptarget, "", 0);
3469 PL_bodytarget = NEWSV(0,0);
3470 sv_upgrade(PL_bodytarget, SVt_PVFM);
3471 sv_setpvn(PL_bodytarget, "", 0);
3472 PL_formtarget = PL_bodytarget;
3476 init_argv_symbols(argc,argv);
3478 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
3479 #ifdef MACOS_TRADITIONAL
3480 /* $0 is not majick on a Mac */
3481 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3483 sv_setpv(GvSV(tmpgv),PL_origfilename);
3484 magicname("0", "0", 1);
3487 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV))) {/* $^X */
3488 #ifdef HAS_PROCSELFEXE
3489 S_procself_val(aTHX_ GvSV(tmpgv), PL_origargv[0]);
3492 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
3494 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
3498 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
3500 GvMULTI_on(PL_envgv);
3501 hv = GvHVn(PL_envgv);
3502 hv_magic(hv, Nullgv, PERL_MAGIC_env);
3503 #ifdef USE_ENVIRON_ARRAY
3504 /* Note that if the supplied env parameter is actually a copy
3505 of the global environ then it may now point to free'd memory
3506 if the environment has been modified since. To avoid this
3507 problem we treat env==NULL as meaning 'use the default'
3512 environ[0] = Nullch;
3514 for (; *env; env++) {
3515 if (!(s = strchr(*env,'=')))
3522 sv = newSVpv(s+1, 0);
3523 (void)hv_store(hv, *env, s - *env, sv, 0);
3527 #endif /* USE_ENVIRON_ARRAY */
3530 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV))) {
3531 SvREADONLY_off(GvSV(tmpgv));
3532 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
3533 SvREADONLY_on(GvSV(tmpgv));
3538 S_init_perllib(pTHX)
3543 s = PerlEnv_getenv("PERL5LIB");
3545 incpush(s, TRUE, TRUE);
3547 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE);
3549 /* Treat PERL5?LIB as a possible search list logical name -- the
3550 * "natural" VMS idiom for a Unix path string. We allow each
3551 * element to be a set of |-separated directories for compatibility.
3555 if (my_trnlnm("PERL5LIB",buf,0))
3556 do { incpush(buf,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
3558 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE);
3562 /* Use the ~-expanded versions of APPLLIB (undocumented),
3563 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
3566 incpush(APPLLIB_EXP, TRUE, TRUE);
3570 incpush(ARCHLIB_EXP, FALSE, FALSE);
3572 #ifdef MACOS_TRADITIONAL
3574 struct stat tmpstatbuf;
3575 SV * privdir = NEWSV(55, 0);
3576 char * macperl = PerlEnv_getenv("MACPERL");
3581 Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl);
3582 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3583 incpush(SvPVX(privdir), TRUE, FALSE);
3584 Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl);
3585 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3586 incpush(SvPVX(privdir), TRUE, FALSE);
3588 SvREFCNT_dec(privdir);
3591 incpush(":", FALSE, FALSE);
3594 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
3597 incpush(PRIVLIB_EXP, TRUE, FALSE);
3599 incpush(PRIVLIB_EXP, FALSE, FALSE);
3603 /* sitearch is always relative to sitelib on Windows for
3604 * DLL-based path intuition to work correctly */
3605 # if !defined(WIN32)
3606 incpush(SITEARCH_EXP, FALSE, FALSE);
3612 incpush(SITELIB_EXP, TRUE, FALSE); /* this picks up sitearch as well */
3614 incpush(SITELIB_EXP, FALSE, FALSE);
3618 #ifdef SITELIB_STEM /* Search for version-specific dirs below here */
3619 incpush(SITELIB_STEM, FALSE, TRUE);
3622 #ifdef PERL_VENDORARCH_EXP
3623 /* vendorarch is always relative to vendorlib on Windows for
3624 * DLL-based path intuition to work correctly */
3625 # if !defined(WIN32)
3626 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE);
3630 #ifdef PERL_VENDORLIB_EXP
3632 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE); /* this picks up vendorarch as well */
3634 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE);
3638 #ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
3639 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE);
3642 #ifdef PERL_OTHERLIBDIRS
3643 incpush(PERL_OTHERLIBDIRS, TRUE, TRUE);
3647 incpush(".", FALSE, FALSE);
3648 #endif /* MACOS_TRADITIONAL */
3651 #if defined(DOSISH) || defined(EPOC)
3652 # define PERLLIB_SEP ';'
3655 # define PERLLIB_SEP '|'
3657 # if defined(MACOS_TRADITIONAL)
3658 # define PERLLIB_SEP ','
3660 # define PERLLIB_SEP ':'
3664 #ifndef PERLLIB_MANGLE
3665 # define PERLLIB_MANGLE(s,n) (s)
3669 S_incpush(pTHX_ char *p, int addsubdirs, int addoldvers)
3671 SV *subdir = Nullsv;
3676 if (addsubdirs || addoldvers) {
3677 subdir = sv_newmortal();
3680 /* Break at all separators */
3682 SV *libdir = NEWSV(55,0);
3685 /* skip any consecutive separators */
3686 while ( *p == PERLLIB_SEP ) {
3687 /* Uncomment the next line for PATH semantics */
3688 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
3692 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
3693 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
3698 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
3699 p = Nullch; /* break out */
3701 #ifdef MACOS_TRADITIONAL
3702 if (!strchr(SvPVX(libdir), ':'))
3703 sv_insert(libdir, 0, 0, ":", 1);
3704 if (SvPVX(libdir)[SvCUR(libdir)-1] != ':')
3705 sv_catpv(libdir, ":");
3709 * BEFORE pushing libdir onto @INC we may first push version- and
3710 * archname-specific sub-directories.
3712 if (addsubdirs || addoldvers) {
3713 #ifdef PERL_INC_VERSION_LIST
3714 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
3715 const char *incverlist[] = { PERL_INC_VERSION_LIST };
3716 const char **incver;
3718 struct stat tmpstatbuf;
3723 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
3725 while (unix[len-1] == '/') len--; /* Cosmetic */
3726 sv_usepvn(libdir,unix,len);
3729 PerlIO_printf(Perl_error_log,
3730 "Failed to unixify @INC element \"%s\"\n",
3734 #ifdef MACOS_TRADITIONAL
3735 #define PERL_AV_SUFFIX_FMT ""
3736 #define PERL_ARCH_FMT "%s:"
3737 #define PERL_ARCH_FMT_PATH PERL_FS_VER_FMT PERL_AV_SUFFIX_FMT
3739 #define PERL_AV_SUFFIX_FMT "/"
3740 #define PERL_ARCH_FMT "/%s"
3741 #define PERL_ARCH_FMT_PATH PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT
3743 /* .../version/archname if -d .../version/archname */
3744 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH PERL_ARCH_FMT,
3746 (int)PERL_REVISION, (int)PERL_VERSION,
3747 (int)PERL_SUBVERSION, ARCHNAME);
3748 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3749 S_ISDIR(tmpstatbuf.st_mode))
3750 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3752 /* .../version if -d .../version */
3753 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH, libdir,
3754 (int)PERL_REVISION, (int)PERL_VERSION,
3755 (int)PERL_SUBVERSION);
3756 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3757 S_ISDIR(tmpstatbuf.st_mode))
3758 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3760 /* .../archname if -d .../archname */
3761 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, ARCHNAME);
3762 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3763 S_ISDIR(tmpstatbuf.st_mode))
3764 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3767 #ifdef PERL_INC_VERSION_LIST
3769 for (incver = incverlist; *incver; incver++) {
3770 /* .../xxx if -d .../xxx */
3771 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, *incver);
3772 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3773 S_ISDIR(tmpstatbuf.st_mode))
3774 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3780 /* finally push this lib directory on the end of @INC */
3781 av_push(GvAVn(PL_incgv), libdir);
3785 #ifdef USE_5005THREADS
3786 STATIC struct perl_thread *
3787 S_init_main_thread(pTHX)
3789 #if !defined(PERL_IMPLICIT_CONTEXT)
3790 struct perl_thread *thr;
3794 Newz(53, thr, 1, struct perl_thread);
3795 PL_curcop = &PL_compiling;
3796 thr->interp = PERL_GET_INTERP;
3797 thr->cvcache = newHV();
3798 thr->threadsv = newAV();
3799 /* thr->threadsvp is set when find_threadsv is called */
3800 thr->specific = newAV();
3801 thr->flags = THRf_R_JOINABLE;
3802 MUTEX_INIT(&thr->mutex);
3803 /* Handcraft thrsv similarly to mess_sv */
3804 New(53, PL_thrsv, 1, SV);
3805 Newz(53, xpv, 1, XPV);
3806 SvFLAGS(PL_thrsv) = SVt_PV;
3807 SvANY(PL_thrsv) = (void*)xpv;
3808 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
3809 SvPVX(PL_thrsv) = (char*)thr;
3810 SvCUR_set(PL_thrsv, sizeof(thr));
3811 SvLEN_set(PL_thrsv, sizeof(thr));
3812 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
3813 thr->oursv = PL_thrsv;
3814 PL_chopset = " \n-";
3817 MUTEX_LOCK(&PL_threads_mutex);
3823 MUTEX_UNLOCK(&PL_threads_mutex);
3825 #ifdef HAVE_THREAD_INTERN
3826 Perl_init_thread_intern(thr);
3829 #ifdef SET_THREAD_SELF
3830 SET_THREAD_SELF(thr);
3832 thr->self = pthread_self();
3833 #endif /* SET_THREAD_SELF */
3837 * These must come after the thread self setting
3838 * because sv_setpvn does SvTAINT and the taint
3839 * fields thread selfness being set.
3841 PL_toptarget = NEWSV(0,0);
3842 sv_upgrade(PL_toptarget, SVt_PVFM);
3843 sv_setpvn(PL_toptarget, "", 0);
3844 PL_bodytarget = NEWSV(0,0);
3845 sv_upgrade(PL_bodytarget, SVt_PVFM);
3846 sv_setpvn(PL_bodytarget, "", 0);
3847 PL_formtarget = PL_bodytarget;
3848 thr->errsv = newSVpvn("", 0);
3849 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
3852 PL_peepp = MEMBER_TO_FPTR(Perl_peep);
3853 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3854 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3855 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3856 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3857 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
3859 PL_reginterp_cnt = 0;
3863 #endif /* USE_5005THREADS */
3866 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
3869 line_t oldline = CopLINE(PL_curcop);
3875 while (AvFILL(paramList) >= 0) {
3876 cv = (CV*)av_shift(paramList);
3877 if (PL_savebegin && (paramList == PL_beginav)) {
3878 /* save PL_beginav for compiler */
3879 if (! PL_beginav_save)
3880 PL_beginav_save = newAV();
3881 av_push(PL_beginav_save, (SV*)cv);
3885 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3886 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_list_body), cv);
3892 #ifndef PERL_FLEXIBLE_EXCEPTIONS
3896 (void)SvPV(atsv, len);
3899 PL_curcop = &PL_compiling;
3900 CopLINE_set(PL_curcop, oldline);
3901 if (paramList == PL_beginav)
3902 sv_catpv(atsv, "BEGIN failed--compilation aborted");
3904 Perl_sv_catpvf(aTHX_ atsv,
3905 "%s failed--call queue aborted",
3906 paramList == PL_checkav ? "CHECK"
3907 : paramList == PL_initav ? "INIT"
3909 while (PL_scopestack_ix > oldscope)
3912 Perl_croak(aTHX_ "%s", SvPVx(atsv, n_a));
3919 /* my_exit() was called */
3920 while (PL_scopestack_ix > oldscope)
3923 PL_curstash = PL_defstash;
3924 PL_curcop = &PL_compiling;
3925 CopLINE_set(PL_curcop, oldline);
3927 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
3928 if (paramList == PL_beginav)
3929 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
3931 Perl_croak(aTHX_ "%s failed--call queue aborted",
3932 paramList == PL_checkav ? "CHECK"
3933 : paramList == PL_initav ? "INIT"
3940 PL_curcop = &PL_compiling;
3941 CopLINE_set(PL_curcop, oldline);
3944 PerlIO_printf(Perl_error_log, "panic: restartop\n");
3952 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3954 S_vcall_list_body(pTHX_ va_list args)
3956 CV *cv = va_arg(args, CV*);
3957 return call_list_body(cv);
3962 S_call_list_body(pTHX_ CV *cv)
3964 PUSHMARK(PL_stack_sp);
3965 call_sv((SV*)cv, G_EVAL|G_DISCARD);
3970 Perl_my_exit(pTHX_ U32 status)
3972 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
3973 thr, (unsigned long) status));
3982 STATUS_NATIVE_SET(status);
3989 Perl_my_failure_exit(pTHX)
3992 if (vaxc$errno & 1) {
3993 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
3994 STATUS_NATIVE_SET(44);
3997 if (!vaxc$errno && errno) /* unlikely */
3998 STATUS_NATIVE_SET(44);
4000 STATUS_NATIVE_SET(vaxc$errno);
4005 STATUS_POSIX_SET(errno);
4007 exitstatus = STATUS_POSIX >> 8;
4008 if (exitstatus & 255)
4009 STATUS_POSIX_SET(exitstatus);
4011 STATUS_POSIX_SET(255);
4018 S_my_exit_jump(pTHX)
4020 register PERL_CONTEXT *cx;
4025 SvREFCNT_dec(PL_e_script);
4026 PL_e_script = Nullsv;
4029 POPSTACK_TO(PL_mainstack);
4030 if (cxstack_ix >= 0) {
4033 POPBLOCK(cx,PL_curpm);
4041 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen)
4044 p = SvPVX(PL_e_script);
4045 nl = strchr(p, '\n');
4046 nl = (nl) ? nl+1 : SvEND(PL_e_script);
4048 filter_del(read_e_script);
4051 sv_catpvn(buf_sv, p, nl-p);
4052 sv_chop(PL_e_script, nl);