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 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_ packWARN(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 "-t enable tainting warnings",
2165 "-u dump core after parsing program",
2166 "-U allow unsafe operations",
2167 "-v print version, subversion (includes VERY IMPORTANT perl info)",
2168 "-V[:variable] print configuration summary (or a single Config.pm variable)",
2169 "-w enable many useful warnings (RECOMMENDED)",
2170 "-W enable all warnings",
2171 "-X disable all warnings",
2172 "-x[directory] strip off text before #!perl line and perhaps cd to directory",
2176 char **p = usage_msg;
2178 PerlIO_printf(PerlIO_stdout(),
2179 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2182 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
2185 /* This routine handles any switches that can be given during run */
2188 Perl_moreswitches(pTHX_ char *s)
2198 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
2199 SvREFCNT_dec(PL_rs);
2200 if (rschar & ~((U8)~0))
2201 PL_rs = &PL_sv_undef;
2202 else if (!rschar && numlen >= 2)
2203 PL_rs = newSVpvn("", 0);
2206 PL_rs = newSVpvn(&ch, 1);
2211 PL_widesyscalls = TRUE;
2217 while (*s && !isSPACE(*s)) ++s;
2219 PL_splitstr = savepv(PL_splitstr);
2232 /* The following permits -d:Mod to accepts arguments following an =
2233 in the fashion that -MSome::Mod does. */
2234 if (*s == ':' || *s == '=') {
2237 sv = newSVpv("use Devel::", 0);
2239 /* We now allow -d:Module=Foo,Bar */
2240 while(isALNUM(*s) || *s==':') ++s;
2242 sv_catpv(sv, start);
2244 sv_catpvn(sv, start, s-start);
2245 sv_catpv(sv, " split(/,/,q{");
2250 my_setenv("PERL5DB", SvPV(sv, PL_na));
2253 PL_perldb = PERLDB_ALL;
2261 if (isALPHA(s[1])) {
2262 /* if adding extra options, remember to update DEBUG_MASK */
2263 static char debopts[] = "psltocPmfrxuLHXDSTRJ";
2266 for (s++; *s && (d = strchr(debopts,*s)); s++)
2267 PL_debug |= 1 << (d - debopts);
2270 PL_debug = atoi(s+1);
2271 for (s++; isDIGIT(*s); s++) ;
2273 PL_debug |= DEBUG_TOP_FLAG;
2275 if (ckWARN_d(WARN_DEBUGGING))
2276 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2277 "Recompile perl with -DDEBUGGING to use -D switch\n");
2278 for (s++; isALNUM(*s); s++) ;
2284 usage(PL_origargv[0]);
2288 Safefree(PL_inplace);
2289 PL_inplace = savepv(s+1);
2291 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
2294 if (*s == '-') /* Additional switches on #! line. */
2298 case 'I': /* -I handled both here and in parse_body() */
2301 while (*s && isSPACE(*s))
2306 /* ignore trailing spaces (possibly followed by other switches) */
2308 for (e = p; *e && !isSPACE(*e); e++) ;
2312 } while (*p && *p != '-');
2313 e = savepvn(s, e-s);
2314 incpush(e, TRUE, TRUE);
2321 Perl_croak(aTHX_ "No directory specified for -I");
2327 SvREFCNT_dec(PL_ors_sv);
2332 PL_ors_sv = newSVpvn("\n",1);
2333 numlen = 3 + (*s == '0');
2334 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
2338 if (RsPARA(PL_rs)) {
2339 PL_ors_sv = newSVpvn("\n\n",2);
2342 PL_ors_sv = newSVsv(PL_rs);
2347 forbid_setid("-M"); /* XXX ? */
2350 forbid_setid("-m"); /* XXX ? */
2355 /* -M-foo == 'no foo' */
2356 if (*s == '-') { use = "no "; ++s; }
2357 sv = newSVpv(use,0);
2359 /* We allow -M'Module qw(Foo Bar)' */
2360 while(isALNUM(*s) || *s==':') ++s;
2362 sv_catpv(sv, start);
2363 if (*(start-1) == 'm') {
2365 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
2366 sv_catpv( sv, " ()");
2370 Perl_croak(aTHX_ "Module name required with -%c option",
2372 sv_catpvn(sv, start, s-start);
2373 sv_catpv(sv, " split(/,/,q{");
2379 PL_preambleav = newAV();
2380 av_push(PL_preambleav, sv);
2383 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
2395 PL_doswitches = TRUE;
2400 Perl_croak(aTHX_ "Too late for \"-t\" option");
2405 Perl_croak(aTHX_ "Too late for \"-T\" option");
2409 #ifdef MACOS_TRADITIONAL
2410 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2412 PL_do_undump = TRUE;
2421 PerlIO_printf(PerlIO_stdout(),
2422 Perl_form(aTHX_ "\nThis is perl, v%"VDf" built for %s",
2423 PL_patchlevel, ARCHNAME));
2425 /* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
2426 PerlIO_printf(PerlIO_stdout(),
2427 Perl_form(aTHX_ "\nThis is perl, version %vd\n", PL_patchlevel));
2428 PerlIO_printf(PerlIO_stdout(),
2429 Perl_form(aTHX_ " built under %s at %s %s\n",
2430 OSNAME, __DATE__, __TIME__));
2431 PerlIO_printf(PerlIO_stdout(),
2432 Perl_form(aTHX_ " OS Specific Release: %s\n",
2436 #if defined(LOCAL_PATCH_COUNT)
2437 if (LOCAL_PATCH_COUNT > 0)
2438 PerlIO_printf(PerlIO_stdout(),
2439 "\n(with %d registered patch%s, "
2440 "see perl -V for more detail)",
2441 (int)LOCAL_PATCH_COUNT,
2442 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
2445 PerlIO_printf(PerlIO_stdout(),
2446 "\n\nCopyright 1987-2002, Larry Wall\n");
2447 #ifdef MACOS_TRADITIONAL
2448 PerlIO_printf(PerlIO_stdout(),
2449 "\nMac OS port Copyright 1991-2002, Matthias Neeracher;\n"
2450 "maintained by Chris Nandor\n");
2453 PerlIO_printf(PerlIO_stdout(),
2454 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
2457 PerlIO_printf(PerlIO_stdout(),
2458 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2459 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
2462 PerlIO_printf(PerlIO_stdout(),
2463 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2464 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
2467 PerlIO_printf(PerlIO_stdout(),
2468 "atariST series port, ++jrb bammi@cadence.com\n");
2471 PerlIO_printf(PerlIO_stdout(),
2472 "BeOS port Copyright Tom Spindler, 1997-1999\n");
2475 PerlIO_printf(PerlIO_stdout(),
2476 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2002\n");
2479 PerlIO_printf(PerlIO_stdout(),
2480 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
2483 PerlIO_printf(PerlIO_stdout(),
2484 "Stratus VOS port by Paul_Green@stratus.com, 1997-2002\n");
2487 PerlIO_printf(PerlIO_stdout(),
2488 "VM/ESA port by Neale Ferguson, 1998-1999\n");
2491 PerlIO_printf(PerlIO_stdout(),
2492 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
2495 PerlIO_printf(PerlIO_stdout(),
2496 "MiNT port by Guido Flohr, 1997-1999\n");
2499 PerlIO_printf(PerlIO_stdout(),
2500 "EPOC port by Olaf Flebbe, 1999-2002\n");
2503 printf("WINCE port by Rainer Keuchel, 2001-2002\n");
2504 printf("Built on " __DATE__ " " __TIME__ "\n\n");
2507 #ifdef BINARY_BUILD_NOTICE
2508 BINARY_BUILD_NOTICE;
2510 PerlIO_printf(PerlIO_stdout(),
2512 Perl may be copied only under the terms of either the Artistic License or the\n\
2513 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
2514 Complete documentation for Perl, including FAQ lists, should be found on\n\
2515 this system using `man perl' or `perldoc perl'. If you have access to the\n\
2516 Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
2519 if (! (PL_dowarn & G_WARN_ALL_MASK))
2520 PL_dowarn |= G_WARN_ON;
2524 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
2525 if (!specialWARN(PL_compiling.cop_warnings))
2526 SvREFCNT_dec(PL_compiling.cop_warnings);
2527 PL_compiling.cop_warnings = pWARN_ALL ;
2531 PL_dowarn = G_WARN_ALL_OFF;
2532 if (!specialWARN(PL_compiling.cop_warnings))
2533 SvREFCNT_dec(PL_compiling.cop_warnings);
2534 PL_compiling.cop_warnings = pWARN_NONE ;
2539 if (s[1] == '-') /* Additional switches on #! line. */
2544 #if defined(WIN32) || !defined(PERL_STRICT_CR)
2550 #ifdef ALTERNATE_SHEBANG
2551 case 'S': /* OS/2 needs -S on "extproc" line. */
2559 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
2564 /* compliments of Tom Christiansen */
2566 /* unexec() can be found in the Gnu emacs distribution */
2567 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
2570 Perl_my_unexec(pTHX)
2578 prog = newSVpv(BIN_EXP, 0);
2579 sv_catpv(prog, "/perl");
2580 file = newSVpv(PL_origfilename, 0);
2581 sv_catpv(file, ".perldump");
2583 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2584 /* unexec prints msg to stderr in case of failure */
2585 PerlProc_exit(status);
2588 # include <lib$routines.h>
2589 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
2591 ABORT(); /* for use with undump */
2596 /* initialize curinterp */
2602 # define PERLVAR(var,type)
2603 # define PERLVARA(var,n,type)
2604 # if defined(PERL_IMPLICIT_CONTEXT)
2605 # if defined(USE_5005THREADS)
2606 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2607 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2608 # else /* !USE_5005THREADS */
2609 # define PERLVARI(var,type,init) aTHX->var = init;
2610 # define PERLVARIC(var,type,init) aTHX->var = init;
2611 # endif /* USE_5005THREADS */
2613 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2614 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2616 # include "intrpvar.h"
2617 # ifndef USE_5005THREADS
2618 # include "thrdvar.h"
2625 # define PERLVAR(var,type)
2626 # define PERLVARA(var,n,type)
2627 # define PERLVARI(var,type,init) PL_##var = init;
2628 # define PERLVARIC(var,type,init) PL_##var = init;
2629 # include "intrpvar.h"
2630 # ifndef USE_5005THREADS
2631 # include "thrdvar.h"
2642 S_init_main_stash(pTHX)
2648 PL_curstash = PL_defstash = newHV();
2649 PL_curstname = newSVpvn("main",4);
2650 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2651 SvREFCNT_dec(GvHV(gv));
2652 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
2654 HvNAME(PL_defstash) = savepv("main");
2655 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2656 GvMULTI_on(PL_incgv);
2657 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2658 GvMULTI_on(PL_hintgv);
2659 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2660 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2661 GvMULTI_on(PL_errgv);
2662 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2663 GvMULTI_on(PL_replgv);
2664 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
2665 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2666 sv_setpvn(ERRSV, "", 0);
2667 PL_curstash = PL_defstash;
2668 CopSTASH_set(&PL_compiling, PL_defstash);
2669 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
2670 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
2671 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
2672 /* We must init $/ before switches are processed. */
2673 sv_setpvn(get_sv("/", TRUE), "\n", 1);
2677 S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
2681 char *cpp_discard_flag;
2687 PL_origfilename = savepv("-e");
2690 /* if find_script() returns, it returns a malloc()-ed value */
2691 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
2693 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2694 char *s = scriptname + 8;
2695 *fdscript = atoi(s);
2699 scriptname = savepv(s + 1);
2700 Safefree(PL_origfilename);
2701 PL_origfilename = scriptname;
2706 CopFILE_free(PL_curcop);
2707 CopFILE_set(PL_curcop, PL_origfilename);
2708 if (strEQ(PL_origfilename,"-"))
2710 if (*fdscript >= 0) {
2711 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
2712 # if defined(HAS_FCNTL) && defined(F_SETFD)
2714 /* ensure close-on-exec */
2715 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1);
2718 else if (PL_preprocess) {
2719 char *cpp_cfg = CPPSTDIN;
2720 SV *cpp = newSVpvn("",0);
2721 SV *cmd = NEWSV(0,0);
2723 if (strEQ(cpp_cfg, "cppstdin"))
2724 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
2725 sv_catpv(cpp, cpp_cfg);
2728 sv_catpvn(sv, "-I", 2);
2729 sv_catpv(sv,PRIVLIB_EXP);
2732 DEBUG_P(PerlIO_printf(Perl_debug_log,
2733 "PL_preprocess: scriptname=\"%s\", cpp=\"%s\", sv=\"%s\", CPPMINUS=\"%s\"\n",
2734 scriptname, SvPVX (cpp), SvPVX (sv), CPPMINUS));
2736 # if defined(MSDOS) || defined(WIN32) || defined(VMS)
2743 cpp_discard_flag = "";
2745 cpp_discard_flag = "-C";
2749 perl = os2_execname(aTHX);
2751 perl = PL_origargv[0];
2755 /* This strips off Perl comments which might interfere with
2756 the C pre-processor, including #!. #line directives are
2757 deliberately stripped to avoid confusion with Perl's version
2758 of #line. FWP played some golf with it so it will fit
2759 into VMS's 255 character buffer.
2762 code = "(1../^#!.*perl/i)|/^\\s*#(?!\\s*((ifn?|un)def|(el|end)?if|define|include|else|error|pragma)\\b)/||!($|=1)||print";
2764 code = "/^\\s*#(?!\\s*((ifn?|un)def|(el|end)?if|define|include|else|error|pragma)\\b)/||!($|=1)||print";
2766 Perl_sv_setpvf(aTHX_ cmd, "\
2767 %s -ne%s%s%s %s | %"SVf" %s %"SVf" %s",
2768 perl, quote, code, quote, scriptname, cpp,
2769 cpp_discard_flag, sv, CPPMINUS);
2771 PL_doextract = FALSE;
2772 # ifdef IAMSUID /* actually, this is caught earlier */
2773 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
2775 (void)seteuid(PL_uid); /* musn't stay setuid root */
2777 # ifdef HAS_SETREUID
2778 (void)setreuid((Uid_t)-1, PL_uid);
2780 # ifdef HAS_SETRESUID
2781 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
2783 PerlProc_setuid(PL_uid);
2787 if (PerlProc_geteuid() != PL_uid)
2788 Perl_croak(aTHX_ "Can't do seteuid!\n");
2790 # endif /* IAMSUID */
2792 DEBUG_P(PerlIO_printf(Perl_debug_log,
2793 "PL_preprocess: cmd=\"%s\"\n",
2796 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
2800 else if (!*scriptname) {
2801 forbid_setid("program input from stdin");
2802 PL_rsfp = PerlIO_stdin();
2805 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
2806 # if defined(HAS_FCNTL) && defined(F_SETFD)
2808 /* ensure close-on-exec */
2809 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1);
2814 # ifndef IAMSUID /* in case script is not readable before setuid */
2816 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
2817 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2820 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT,
2821 BIN_EXP, (int)PERL_REVISION,
2823 (int)PERL_SUBVERSION), PL_origargv);
2824 Perl_croak(aTHX_ "Can't do setuid\n");
2830 Perl_croak(aTHX_ "Can't open perl script: %s\n",
2833 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
2834 CopFILE(PL_curcop), Strerror(errno));
2840 * I_SYSSTATVFS HAS_FSTATVFS
2842 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
2843 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2844 * here so that metaconfig picks them up. */
2848 S_fd_on_nosuid_fs(pTHX_ int fd)
2850 int check_okay = 0; /* able to do all the required sys/libcalls */
2851 int on_nosuid = 0; /* the fd is on a nosuid fs */
2853 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
2854 * fstatvfs() is UNIX98.
2855 * fstatfs() is 4.3 BSD.
2856 * ustat()+getmnt() is pre-4.3 BSD.
2857 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2858 * an irrelevant filesystem while trying to reach the right one.
2861 #undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2863 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2864 defined(HAS_FSTATVFS)
2865 # define FD_ON_NOSUID_CHECK_OKAY
2866 struct statvfs stfs;
2868 check_okay = fstatvfs(fd, &stfs) == 0;
2869 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
2870 # endif /* fstatvfs */
2872 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2873 defined(PERL_MOUNT_NOSUID) && \
2874 defined(HAS_FSTATFS) && \
2875 defined(HAS_STRUCT_STATFS) && \
2876 defined(HAS_STRUCT_STATFS_F_FLAGS)
2877 # define FD_ON_NOSUID_CHECK_OKAY
2880 check_okay = fstatfs(fd, &stfs) == 0;
2881 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
2882 # endif /* fstatfs */
2884 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2885 defined(PERL_MOUNT_NOSUID) && \
2886 defined(HAS_FSTAT) && \
2887 defined(HAS_USTAT) && \
2888 defined(HAS_GETMNT) && \
2889 defined(HAS_STRUCT_FS_DATA) && \
2891 # define FD_ON_NOSUID_CHECK_OKAY
2894 if (fstat(fd, &fdst) == 0) {
2896 if (ustat(fdst.st_dev, &us) == 0) {
2898 /* NOSTAT_ONE here because we're not examining fields which
2899 * vary between that case and STAT_ONE. */
2900 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
2901 size_t cmplen = sizeof(us.f_fname);
2902 if (sizeof(fsd.fd_req.path) < cmplen)
2903 cmplen = sizeof(fsd.fd_req.path);
2904 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2905 fdst.st_dev == fsd.fd_req.dev) {
2907 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2913 # endif /* fstat+ustat+getmnt */
2915 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2916 defined(HAS_GETMNTENT) && \
2917 defined(HAS_HASMNTOPT) && \
2918 defined(MNTOPT_NOSUID)
2919 # define FD_ON_NOSUID_CHECK_OKAY
2920 FILE *mtab = fopen("/etc/mtab", "r");
2921 struct mntent *entry;
2922 struct stat stb, fsb;
2924 if (mtab && (fstat(fd, &stb) == 0)) {
2925 while (entry = getmntent(mtab)) {
2926 if (stat(entry->mnt_dir, &fsb) == 0
2927 && fsb.st_dev == stb.st_dev)
2929 /* found the filesystem */
2931 if (hasmntopt(entry, MNTOPT_NOSUID))
2934 } /* A single fs may well fail its stat(). */
2939 # endif /* getmntent+hasmntopt */
2942 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
2945 #endif /* IAMSUID */
2948 S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
2954 /* do we need to emulate setuid on scripts? */
2956 /* This code is for those BSD systems that have setuid #! scripts disabled
2957 * in the kernel because of a security problem. Merely defining DOSUID
2958 * in perl will not fix that problem, but if you have disabled setuid
2959 * scripts in the kernel, this will attempt to emulate setuid and setgid
2960 * on scripts that have those now-otherwise-useless bits set. The setuid
2961 * root version must be called suidperl or sperlN.NNN. If regular perl
2962 * discovers that it has opened a setuid script, it calls suidperl with
2963 * the same argv that it had. If suidperl finds that the script it has
2964 * just opened is NOT setuid root, it sets the effective uid back to the
2965 * uid. We don't just make perl setuid root because that loses the
2966 * effective uid we had before invoking perl, if it was different from the
2969 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2970 * be defined in suidperl only. suidperl must be setuid root. The
2971 * Configure script will set this up for you if you want it.
2977 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
2978 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
2979 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
2984 #ifndef HAS_SETREUID
2985 /* On this access check to make sure the directories are readable,
2986 * there is actually a small window that the user could use to make
2987 * filename point to an accessible directory. So there is a faint
2988 * chance that someone could execute a setuid script down in a
2989 * non-accessible directory. I don't know what to do about that.
2990 * But I don't think it's too important. The manual lies when
2991 * it says access() is useful in setuid programs.
2993 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
2994 Perl_croak(aTHX_ "Permission denied");
2996 /* If we can swap euid and uid, then we can determine access rights
2997 * with a simple stat of the file, and then compare device and
2998 * inode to make sure we did stat() on the same file we opened.
2999 * Then we just have to make sure he or she can execute it.
3002 struct stat tmpstatbuf;
3006 setreuid(PL_euid,PL_uid) < 0
3009 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
3012 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
3013 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
3014 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
3015 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
3016 #if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
3017 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
3018 Perl_croak(aTHX_ "Permission denied");
3020 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
3021 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
3022 (void)PerlIO_close(PL_rsfp);
3023 Perl_croak(aTHX_ "Permission denied\n");
3027 setreuid(PL_uid,PL_euid) < 0
3029 # if defined(HAS_SETRESUID)
3030 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
3033 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
3034 Perl_croak(aTHX_ "Can't reswap uid and euid");
3035 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
3036 Perl_croak(aTHX_ "Permission denied\n");
3038 #endif /* HAS_SETREUID */
3039 #endif /* IAMSUID */
3041 if (!S_ISREG(PL_statbuf.st_mode))
3042 Perl_croak(aTHX_ "Permission denied");
3043 if (PL_statbuf.st_mode & S_IWOTH)
3044 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
3045 PL_doswitches = FALSE; /* -s is insecure in suid */
3046 CopLINE_inc(PL_curcop);
3047 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
3048 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
3049 Perl_croak(aTHX_ "No #! line");
3050 s = SvPV(PL_linestr,n_a)+2;
3052 while (!isSPACE(*s)) s++;
3053 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
3054 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
3055 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
3056 Perl_croak(aTHX_ "Not a perl script");
3057 while (*s == ' ' || *s == '\t') s++;
3059 * #! arg must be what we saw above. They can invoke it by
3060 * mentioning suidperl explicitly, but they may not add any strange
3061 * arguments beyond what #! says if they do invoke suidperl that way.
3063 len = strlen(validarg);
3064 if (strEQ(validarg," PHOOEY ") ||
3065 strnNE(s,validarg,len) || !isSPACE(s[len]))
3066 Perl_croak(aTHX_ "Args must match #! line");
3069 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
3070 PL_euid == PL_statbuf.st_uid)
3072 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3073 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3074 #endif /* IAMSUID */
3076 if (PL_euid) { /* oops, we're not the setuid root perl */
3077 (void)PerlIO_close(PL_rsfp);
3080 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
3081 (int)PERL_REVISION, (int)PERL_VERSION,
3082 (int)PERL_SUBVERSION), PL_origargv);
3084 Perl_croak(aTHX_ "Can't do setuid\n");
3087 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
3089 (void)setegid(PL_statbuf.st_gid);
3092 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
3094 #ifdef HAS_SETRESGID
3095 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
3097 PerlProc_setgid(PL_statbuf.st_gid);
3101 if (PerlProc_getegid() != PL_statbuf.st_gid)
3102 Perl_croak(aTHX_ "Can't do setegid!\n");
3104 if (PL_statbuf.st_mode & S_ISUID) {
3105 if (PL_statbuf.st_uid != PL_euid)
3107 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
3110 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
3112 #ifdef HAS_SETRESUID
3113 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
3115 PerlProc_setuid(PL_statbuf.st_uid);
3119 if (PerlProc_geteuid() != PL_statbuf.st_uid)
3120 Perl_croak(aTHX_ "Can't do seteuid!\n");
3122 else if (PL_uid) { /* oops, mustn't run as root */
3124 (void)seteuid((Uid_t)PL_uid);
3127 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
3129 #ifdef HAS_SETRESUID
3130 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
3132 PerlProc_setuid((Uid_t)PL_uid);
3136 if (PerlProc_geteuid() != PL_uid)
3137 Perl_croak(aTHX_ "Can't do seteuid!\n");
3140 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
3141 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
3144 else if (PL_preprocess)
3145 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
3146 else if (fdscript >= 0)
3147 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
3149 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
3151 /* We absolutely must clear out any saved ids here, so we */
3152 /* exec the real perl, substituting fd script for scriptname. */
3153 /* (We pass script name as "subdir" of fd, which perl will grok.) */
3154 PerlIO_rewind(PL_rsfp);
3155 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
3156 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3157 if (!PL_origargv[which])
3158 Perl_croak(aTHX_ "Permission denied");
3159 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
3160 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
3161 #if defined(HAS_FCNTL) && defined(F_SETFD)
3162 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
3164 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
3165 (int)PERL_REVISION, (int)PERL_VERSION,
3166 (int)PERL_SUBVERSION), PL_origargv);/* try again */
3167 Perl_croak(aTHX_ "Can't do setuid\n");
3168 #endif /* IAMSUID */
3170 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
3171 #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
3172 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3173 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3175 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3178 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3179 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3180 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3181 /* not set-id, must be wrapped */
3187 S_find_beginning(pTHX)
3189 register char *s, *s2;
3191 /* skip forward in input to the real script? */
3194 #ifdef MACOS_TRADITIONAL
3195 /* Since the Mac OS does not honor #! arguments for us, we do it ourselves */
3197 while (PL_doextract || gMacPerl_AlwaysExtract) {
3198 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3199 if (!gMacPerl_AlwaysExtract)
3200 Perl_croak(aTHX_ "No Perl script found in input\n");
3202 if (PL_doextract) /* require explicit override ? */
3203 if (!OverrideExtract(PL_origfilename))
3204 Perl_croak(aTHX_ "User aborted script\n");
3206 PL_doextract = FALSE;
3208 /* Pater peccavi, file does not have #! */
3209 PerlIO_rewind(PL_rsfp);
3214 while (PL_doextract) {
3215 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
3216 Perl_croak(aTHX_ "No Perl script found in input\n");
3219 if (*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))) {
3220 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3221 PL_doextract = FALSE;
3222 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3224 while (*s == ' ' || *s == '\t') s++;
3226 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3227 if (strnEQ(s2-4,"perl",4))
3229 while ((s = moreswitches(s)))
3232 #ifdef MACOS_TRADITIONAL
3243 PL_uid = PerlProc_getuid();
3244 PL_euid = PerlProc_geteuid();
3245 PL_gid = PerlProc_getgid();
3246 PL_egid = PerlProc_getegid();
3248 PL_uid |= PL_gid << 16;
3249 PL_euid |= PL_egid << 16;
3251 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3255 S_forbid_setid(pTHX_ char *s)
3257 if (PL_euid != PL_uid)
3258 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3259 if (PL_egid != PL_gid)
3260 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
3264 Perl_init_debugger(pTHX)
3266 HV *ostash = PL_curstash;
3268 PL_curstash = PL_debstash;
3269 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3270 AvREAL_off(PL_dbargs);
3271 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3272 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3273 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
3274 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3275 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
3276 sv_setiv(PL_DBsingle, 0);
3277 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
3278 sv_setiv(PL_DBtrace, 0);
3279 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
3280 sv_setiv(PL_DBsignal, 0);
3281 PL_curstash = ostash;
3284 #ifndef STRESS_REALLOC
3285 #define REASONABLE(size) (size)
3287 #define REASONABLE(size) (1) /* unreasonable */
3291 Perl_init_stacks(pTHX)
3293 /* start with 128-item stack and 8K cxstack */
3294 PL_curstackinfo = new_stackinfo(REASONABLE(128),
3295 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3296 PL_curstackinfo->si_type = PERLSI_MAIN;
3297 PL_curstack = PL_curstackinfo->si_stack;
3298 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
3300 PL_stack_base = AvARRAY(PL_curstack);
3301 PL_stack_sp = PL_stack_base;
3302 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
3304 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3307 PL_tmps_max = REASONABLE(128);
3309 New(54,PL_markstack,REASONABLE(32),I32);
3310 PL_markstack_ptr = PL_markstack;
3311 PL_markstack_max = PL_markstack + REASONABLE(32);
3315 New(54,PL_scopestack,REASONABLE(32),I32);
3316 PL_scopestack_ix = 0;
3317 PL_scopestack_max = REASONABLE(32);
3319 New(54,PL_savestack,REASONABLE(128),ANY);
3320 PL_savestack_ix = 0;
3321 PL_savestack_max = REASONABLE(128);
3323 New(54,PL_retstack,REASONABLE(16),OP*);
3325 PL_retstack_max = REASONABLE(16);
3333 while (PL_curstackinfo->si_next)
3334 PL_curstackinfo = PL_curstackinfo->si_next;
3335 while (PL_curstackinfo) {
3336 PERL_SI *p = PL_curstackinfo->si_prev;
3337 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3338 Safefree(PL_curstackinfo->si_cxstack);
3339 Safefree(PL_curstackinfo);
3340 PL_curstackinfo = p;
3342 Safefree(PL_tmps_stack);
3343 Safefree(PL_markstack);
3344 Safefree(PL_scopestack);
3345 Safefree(PL_savestack);
3346 Safefree(PL_retstack);
3355 lex_start(PL_linestr);
3357 PL_subname = newSVpvn("main",4);
3361 S_init_predump_symbols(pTHX)
3366 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3367 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3368 GvMULTI_on(PL_stdingv);
3369 io = GvIOp(PL_stdingv);
3370 IoTYPE(io) = IoTYPE_RDONLY;
3371 IoIFP(io) = PerlIO_stdin();
3372 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
3374 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3376 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
3379 IoTYPE(io) = IoTYPE_WRONLY;
3380 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
3382 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
3384 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3386 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3387 GvMULTI_on(PL_stderrgv);
3388 io = GvIOp(PL_stderrgv);
3389 IoTYPE(io) = IoTYPE_WRONLY;
3390 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
3391 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
3393 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3395 PL_statname = NEWSV(66,0); /* last filename we did stat on */
3398 Safefree(PL_osname);
3399 PL_osname = savepv(OSNAME);
3403 Perl_init_argv_symbols(pTHX_ register int argc, register char **argv)
3406 argc--,argv++; /* skip name of script */
3407 if (PL_doswitches) {
3408 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3411 if (argv[0][1] == '-' && !argv[0][2]) {
3415 if ((s = strchr(argv[0], '='))) {
3417 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
3420 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
3423 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3424 GvMULTI_on(PL_argvgv);
3425 (void)gv_AVadd(PL_argvgv);
3426 av_clear(GvAVn(PL_argvgv));
3427 for (; argc > 0; argc--,argv++) {
3428 SV *sv = newSVpv(argv[0],0);
3429 av_push(GvAVn(PL_argvgv),sv);
3430 if (PL_widesyscalls)
3431 (void)sv_utf8_decode(sv);
3436 #ifdef HAS_PROCSELFEXE
3437 /* This is a function so that we don't hold on to MAXPATHLEN
3438 bytes of stack longer than necessary
3441 S_procself_val(pTHX_ SV *sv, char *arg0)
3443 char buf[MAXPATHLEN];
3444 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
3445 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
3446 returning the text "unknown" from the readlink rather than the path
3447 to the executable (or returning an error from the readlink). Any valid
3448 path has a '/' in it somewhere, so use that to validate the result.
3449 See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
3451 if (len > 0 && memchr(buf, '/', len)) {
3452 sv_setpvn(sv,buf,len);
3458 #endif /* HAS_PROCSELFEXE */
3461 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
3467 PL_toptarget = NEWSV(0,0);
3468 sv_upgrade(PL_toptarget, SVt_PVFM);
3469 sv_setpvn(PL_toptarget, "", 0);
3470 PL_bodytarget = NEWSV(0,0);
3471 sv_upgrade(PL_bodytarget, SVt_PVFM);
3472 sv_setpvn(PL_bodytarget, "", 0);
3473 PL_formtarget = PL_bodytarget;
3477 init_argv_symbols(argc,argv);
3479 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
3480 #ifdef MACOS_TRADITIONAL
3481 /* $0 is not majick on a Mac */
3482 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3484 sv_setpv(GvSV(tmpgv),PL_origfilename);
3485 magicname("0", "0", 1);
3488 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV))) {/* $^X */
3489 #ifdef HAS_PROCSELFEXE
3490 S_procself_val(aTHX_ GvSV(tmpgv), PL_origargv[0]);
3493 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
3495 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
3499 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
3501 GvMULTI_on(PL_envgv);
3502 hv = GvHVn(PL_envgv);
3503 hv_magic(hv, Nullgv, PERL_MAGIC_env);
3504 #ifdef USE_ENVIRON_ARRAY
3505 /* Note that if the supplied env parameter is actually a copy
3506 of the global environ then it may now point to free'd memory
3507 if the environment has been modified since. To avoid this
3508 problem we treat env==NULL as meaning 'use the default'
3513 environ[0] = Nullch;
3515 for (; *env; env++) {
3516 if (!(s = strchr(*env,'=')))
3523 sv = newSVpv(s+1, 0);
3524 (void)hv_store(hv, *env, s - *env, sv, 0);
3528 #endif /* USE_ENVIRON_ARRAY */
3531 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV))) {
3532 SvREADONLY_off(GvSV(tmpgv));
3533 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
3534 SvREADONLY_on(GvSV(tmpgv));
3539 S_init_perllib(pTHX)
3544 s = PerlEnv_getenv("PERL5LIB");
3546 incpush(s, TRUE, TRUE);
3548 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE);
3550 /* Treat PERL5?LIB as a possible search list logical name -- the
3551 * "natural" VMS idiom for a Unix path string. We allow each
3552 * element to be a set of |-separated directories for compatibility.
3556 if (my_trnlnm("PERL5LIB",buf,0))
3557 do { incpush(buf,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
3559 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE);
3563 /* Use the ~-expanded versions of APPLLIB (undocumented),
3564 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
3567 incpush(APPLLIB_EXP, TRUE, TRUE);
3571 incpush(ARCHLIB_EXP, FALSE, FALSE);
3573 #ifdef MACOS_TRADITIONAL
3575 struct stat tmpstatbuf;
3576 SV * privdir = NEWSV(55, 0);
3577 char * macperl = PerlEnv_getenv("MACPERL");
3582 Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl);
3583 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3584 incpush(SvPVX(privdir), TRUE, FALSE);
3585 Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl);
3586 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3587 incpush(SvPVX(privdir), TRUE, FALSE);
3589 SvREFCNT_dec(privdir);
3592 incpush(":", FALSE, FALSE);
3595 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
3598 incpush(PRIVLIB_EXP, TRUE, FALSE);
3600 incpush(PRIVLIB_EXP, FALSE, FALSE);
3604 /* sitearch is always relative to sitelib on Windows for
3605 * DLL-based path intuition to work correctly */
3606 # if !defined(WIN32)
3607 incpush(SITEARCH_EXP, FALSE, FALSE);
3613 incpush(SITELIB_EXP, TRUE, FALSE); /* this picks up sitearch as well */
3615 incpush(SITELIB_EXP, FALSE, FALSE);
3619 #ifdef SITELIB_STEM /* Search for version-specific dirs below here */
3620 incpush(SITELIB_STEM, FALSE, TRUE);
3623 #ifdef PERL_VENDORARCH_EXP
3624 /* vendorarch is always relative to vendorlib on Windows for
3625 * DLL-based path intuition to work correctly */
3626 # if !defined(WIN32)
3627 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE);
3631 #ifdef PERL_VENDORLIB_EXP
3633 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE); /* this picks up vendorarch as well */
3635 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE);
3639 #ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
3640 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE);
3643 #ifdef PERL_OTHERLIBDIRS
3644 incpush(PERL_OTHERLIBDIRS, TRUE, TRUE);
3648 incpush(".", FALSE, FALSE);
3649 #endif /* MACOS_TRADITIONAL */
3652 #if defined(DOSISH) || defined(EPOC)
3653 # define PERLLIB_SEP ';'
3656 # define PERLLIB_SEP '|'
3658 # if defined(MACOS_TRADITIONAL)
3659 # define PERLLIB_SEP ','
3661 # define PERLLIB_SEP ':'
3665 #ifndef PERLLIB_MANGLE
3666 # define PERLLIB_MANGLE(s,n) (s)
3670 S_incpush(pTHX_ char *p, int addsubdirs, int addoldvers)
3672 SV *subdir = Nullsv;
3677 if (addsubdirs || addoldvers) {
3678 subdir = sv_newmortal();
3681 /* Break at all separators */
3683 SV *libdir = NEWSV(55,0);
3686 /* skip any consecutive separators */
3687 while ( *p == PERLLIB_SEP ) {
3688 /* Uncomment the next line for PATH semantics */
3689 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
3693 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
3694 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
3699 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
3700 p = Nullch; /* break out */
3702 #ifdef MACOS_TRADITIONAL
3703 if (!strchr(SvPVX(libdir), ':'))
3704 sv_insert(libdir, 0, 0, ":", 1);
3705 if (SvPVX(libdir)[SvCUR(libdir)-1] != ':')
3706 sv_catpv(libdir, ":");
3710 * BEFORE pushing libdir onto @INC we may first push version- and
3711 * archname-specific sub-directories.
3713 if (addsubdirs || addoldvers) {
3714 #ifdef PERL_INC_VERSION_LIST
3715 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
3716 const char *incverlist[] = { PERL_INC_VERSION_LIST };
3717 const char **incver;
3719 struct stat tmpstatbuf;
3724 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
3726 while (unix[len-1] == '/') len--; /* Cosmetic */
3727 sv_usepvn(libdir,unix,len);
3730 PerlIO_printf(Perl_error_log,
3731 "Failed to unixify @INC element \"%s\"\n",
3735 #ifdef MACOS_TRADITIONAL
3736 #define PERL_AV_SUFFIX_FMT ""
3737 #define PERL_ARCH_FMT "%s:"
3738 #define PERL_ARCH_FMT_PATH PERL_FS_VER_FMT PERL_AV_SUFFIX_FMT
3740 #define PERL_AV_SUFFIX_FMT "/"
3741 #define PERL_ARCH_FMT "/%s"
3742 #define PERL_ARCH_FMT_PATH PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT
3744 /* .../version/archname if -d .../version/archname */
3745 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH PERL_ARCH_FMT,
3747 (int)PERL_REVISION, (int)PERL_VERSION,
3748 (int)PERL_SUBVERSION, ARCHNAME);
3749 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3750 S_ISDIR(tmpstatbuf.st_mode))
3751 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3753 /* .../version if -d .../version */
3754 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH, libdir,
3755 (int)PERL_REVISION, (int)PERL_VERSION,
3756 (int)PERL_SUBVERSION);
3757 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3758 S_ISDIR(tmpstatbuf.st_mode))
3759 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3761 /* .../archname if -d .../archname */
3762 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, ARCHNAME);
3763 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3764 S_ISDIR(tmpstatbuf.st_mode))
3765 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3768 #ifdef PERL_INC_VERSION_LIST
3770 for (incver = incverlist; *incver; incver++) {
3771 /* .../xxx if -d .../xxx */
3772 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, *incver);
3773 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3774 S_ISDIR(tmpstatbuf.st_mode))
3775 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3781 /* finally push this lib directory on the end of @INC */
3782 av_push(GvAVn(PL_incgv), libdir);
3786 #ifdef USE_5005THREADS
3787 STATIC struct perl_thread *
3788 S_init_main_thread(pTHX)
3790 #if !defined(PERL_IMPLICIT_CONTEXT)
3791 struct perl_thread *thr;
3795 Newz(53, thr, 1, struct perl_thread);
3796 PL_curcop = &PL_compiling;
3797 thr->interp = PERL_GET_INTERP;
3798 thr->cvcache = newHV();
3799 thr->threadsv = newAV();
3800 /* thr->threadsvp is set when find_threadsv is called */
3801 thr->specific = newAV();
3802 thr->flags = THRf_R_JOINABLE;
3803 MUTEX_INIT(&thr->mutex);
3804 /* Handcraft thrsv similarly to mess_sv */
3805 New(53, PL_thrsv, 1, SV);
3806 Newz(53, xpv, 1, XPV);
3807 SvFLAGS(PL_thrsv) = SVt_PV;
3808 SvANY(PL_thrsv) = (void*)xpv;
3809 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
3810 SvPVX(PL_thrsv) = (char*)thr;
3811 SvCUR_set(PL_thrsv, sizeof(thr));
3812 SvLEN_set(PL_thrsv, sizeof(thr));
3813 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
3814 thr->oursv = PL_thrsv;
3815 PL_chopset = " \n-";
3818 MUTEX_LOCK(&PL_threads_mutex);
3824 MUTEX_UNLOCK(&PL_threads_mutex);
3826 #ifdef HAVE_THREAD_INTERN
3827 Perl_init_thread_intern(thr);
3830 #ifdef SET_THREAD_SELF
3831 SET_THREAD_SELF(thr);
3833 thr->self = pthread_self();
3834 #endif /* SET_THREAD_SELF */
3838 * These must come after the thread self setting
3839 * because sv_setpvn does SvTAINT and the taint
3840 * fields thread selfness being set.
3842 PL_toptarget = NEWSV(0,0);
3843 sv_upgrade(PL_toptarget, SVt_PVFM);
3844 sv_setpvn(PL_toptarget, "", 0);
3845 PL_bodytarget = NEWSV(0,0);
3846 sv_upgrade(PL_bodytarget, SVt_PVFM);
3847 sv_setpvn(PL_bodytarget, "", 0);
3848 PL_formtarget = PL_bodytarget;
3849 thr->errsv = newSVpvn("", 0);
3850 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
3853 PL_peepp = MEMBER_TO_FPTR(Perl_peep);
3854 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3855 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3856 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3857 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3858 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
3860 PL_reginterp_cnt = 0;
3864 #endif /* USE_5005THREADS */
3867 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
3870 line_t oldline = CopLINE(PL_curcop);
3876 while (AvFILL(paramList) >= 0) {
3877 cv = (CV*)av_shift(paramList);
3878 if (PL_savebegin && (paramList == PL_beginav)) {
3879 /* save PL_beginav for compiler */
3880 if (! PL_beginav_save)
3881 PL_beginav_save = newAV();
3882 av_push(PL_beginav_save, (SV*)cv);
3886 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3887 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_list_body), cv);
3893 #ifndef PERL_FLEXIBLE_EXCEPTIONS
3897 (void)SvPV(atsv, len);
3900 PL_curcop = &PL_compiling;
3901 CopLINE_set(PL_curcop, oldline);
3902 if (paramList == PL_beginav)
3903 sv_catpv(atsv, "BEGIN failed--compilation aborted");
3905 Perl_sv_catpvf(aTHX_ atsv,
3906 "%s failed--call queue aborted",
3907 paramList == PL_checkav ? "CHECK"
3908 : paramList == PL_initav ? "INIT"
3910 while (PL_scopestack_ix > oldscope)
3913 Perl_croak(aTHX_ "%s", SvPVx(atsv, n_a));
3920 /* my_exit() was called */
3921 while (PL_scopestack_ix > oldscope)
3924 PL_curstash = PL_defstash;
3925 PL_curcop = &PL_compiling;
3926 CopLINE_set(PL_curcop, oldline);
3928 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
3929 if (paramList == PL_beginav)
3930 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
3932 Perl_croak(aTHX_ "%s failed--call queue aborted",
3933 paramList == PL_checkav ? "CHECK"
3934 : paramList == PL_initav ? "INIT"
3941 PL_curcop = &PL_compiling;
3942 CopLINE_set(PL_curcop, oldline);
3945 PerlIO_printf(Perl_error_log, "panic: restartop\n");
3953 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3955 S_vcall_list_body(pTHX_ va_list args)
3957 CV *cv = va_arg(args, CV*);
3958 return call_list_body(cv);
3963 S_call_list_body(pTHX_ CV *cv)
3965 PUSHMARK(PL_stack_sp);
3966 call_sv((SV*)cv, G_EVAL|G_DISCARD);
3971 Perl_my_exit(pTHX_ U32 status)
3973 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
3974 thr, (unsigned long) status));
3983 STATUS_NATIVE_SET(status);
3990 Perl_my_failure_exit(pTHX)
3993 if (vaxc$errno & 1) {
3994 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
3995 STATUS_NATIVE_SET(44);
3998 if (!vaxc$errno && errno) /* unlikely */
3999 STATUS_NATIVE_SET(44);
4001 STATUS_NATIVE_SET(vaxc$errno);
4006 STATUS_POSIX_SET(errno);
4008 exitstatus = STATUS_POSIX >> 8;
4009 if (exitstatus & 255)
4010 STATUS_POSIX_SET(exitstatus);
4012 STATUS_POSIX_SET(255);
4019 S_my_exit_jump(pTHX)
4021 register PERL_CONTEXT *cx;
4026 SvREFCNT_dec(PL_e_script);
4027 PL_e_script = Nullsv;
4030 POPSTACK_TO(PL_mainstack);
4031 if (cxstack_ix >= 0) {
4034 POPBLOCK(cx,PL_curpm);
4042 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen)
4045 p = SvPVX(PL_e_script);
4046 nl = strchr(p, '\n');
4047 nl = (nl) ? nl+1 : SvEND(PL_e_script);
4049 filter_del(read_e_script);
4052 sv_catpvn(buf_sv, p, nl-p);
4053 sv_chop(PL_e_script, nl);