3 * Copyright (c) 1987-2001 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)
25 char *getenv (char *); /* Usually in <stdlib.h> */
28 static I32 read_e_script(pTHXo_ int idx, SV *buf_sv, int maxlen);
36 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
43 #define perl_construct Perl_construct
44 #define perl_parse Perl_parse
45 #define perl_run Perl_run
46 #define perl_destruct Perl_destruct
47 #define perl_free Perl_free
50 #if defined(USE_THREADS)
51 # define INIT_TLS_AND_INTERP \
53 if (!PL_curinterp) { \
54 PERL_SET_INTERP(my_perl); \
60 # if defined(USE_ITHREADS)
61 # define INIT_TLS_AND_INTERP \
63 if (!PL_curinterp) { \
64 PERL_SET_INTERP(my_perl); \
67 PERL_SET_THX(my_perl); \
71 PERL_SET_THX(my_perl); \
75 # define INIT_TLS_AND_INTERP \
77 if (!PL_curinterp) { \
78 PERL_SET_INTERP(my_perl); \
80 PERL_SET_THX(my_perl); \
85 #ifdef PERL_IMPLICIT_SYS
87 perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
88 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
89 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
90 struct IPerlDir* ipD, struct IPerlSock* ipS,
91 struct IPerlProc* ipP)
93 PerlInterpreter *my_perl;
95 my_perl = (PerlInterpreter*)new(ipM) CPerlObj(ipM, ipMS, ipMP, ipE, ipStd,
96 ipLIO, ipD, ipS, ipP);
99 /* New() needs interpreter, so call malloc() instead */
100 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
102 Zero(my_perl, 1, PerlInterpreter);
119 =for apidoc perl_alloc
121 Allocates a new Perl interpreter. See L<perlembed>.
129 PerlInterpreter *my_perl;
131 /* New() needs interpreter, so call malloc() instead */
132 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
135 Zero(my_perl, 1, PerlInterpreter);
138 #endif /* PERL_IMPLICIT_SYS */
141 =for apidoc perl_construct
143 Initializes a new Perl interpreter. See L<perlembed>.
149 perl_construct(pTHXx)
153 struct perl_thread *thr = NULL;
154 #endif /* FAKE_THREADS */
155 #endif /* USE_THREADS */
159 PL_perl_destruct_level = 1;
161 if (PL_perl_destruct_level > 0)
165 /* Init the real globals (and main thread)? */
168 MUTEX_INIT(&PL_sv_mutex);
170 * Safe to use basic SV functions from now on (though
171 * not things like mortals or tainting yet).
173 MUTEX_INIT(&PL_eval_mutex);
174 COND_INIT(&PL_eval_cond);
175 MUTEX_INIT(&PL_threads_mutex);
176 COND_INIT(&PL_nthreads_cond);
177 # ifdef EMULATE_ATOMIC_REFCOUNTS
178 MUTEX_INIT(&PL_svref_mutex);
179 # endif /* EMULATE_ATOMIC_REFCOUNTS */
181 MUTEX_INIT(&PL_cred_mutex);
182 MUTEX_INIT(&PL_sv_lock_mutex);
183 MUTEX_INIT(&PL_fdpid_mutex);
185 thr = init_main_thread();
186 #endif /* USE_THREADS */
188 #ifdef PERL_FLEXIBLE_EXCEPTIONS
189 PL_protect = MEMBER_TO_FPTR(Perl_default_protect); /* for exceptions */
192 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
194 PL_linestr = NEWSV(65,79);
195 sv_upgrade(PL_linestr,SVt_PVIV);
197 if (!SvREADONLY(&PL_sv_undef)) {
198 /* set read-only and try to insure than we wont see REFCNT==0
201 SvREADONLY_on(&PL_sv_undef);
202 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
204 sv_setpv(&PL_sv_no,PL_No);
206 SvREADONLY_on(&PL_sv_no);
207 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
209 sv_setpv(&PL_sv_yes,PL_Yes);
211 SvREADONLY_on(&PL_sv_yes);
212 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
217 /* PL_sighandlerp = sighandler; */
219 PL_sighandlerp = Perl_sighandler;
221 PL_pidstatus = newHV();
225 * There is no way we can refer to them from Perl so close them to save
226 * space. The other alternative would be to provide STDAUX and STDPRN
229 (void)fclose(stdaux);
230 (void)fclose(stdprn);
234 PL_nrs = newSVpvn("\n", 1);
235 PL_rs = SvREFCNT_inc(PL_nrs);
240 PL_lex_state = LEX_NOTPARSING;
246 SET_NUMERIC_STANDARD();
250 PL_patchlevel = NEWSV(0,4);
251 (void)SvUPGRADE(PL_patchlevel, SVt_PVNV);
252 if (PERL_REVISION > 127 || PERL_VERSION > 127 || PERL_SUBVERSION > 127)
253 SvGROW(PL_patchlevel, UTF8_MAXLEN*3+1);
254 s = (U8*)SvPVX(PL_patchlevel);
255 /* Build version strings using "native" characters */
256 s = uvchr_to_utf8(s, (UV)PERL_REVISION);
257 s = uvchr_to_utf8(s, (UV)PERL_VERSION);
258 s = uvchr_to_utf8(s, (UV)PERL_SUBVERSION);
260 SvCUR_set(PL_patchlevel, s - (U8*)SvPVX(PL_patchlevel));
261 SvPOK_on(PL_patchlevel);
262 SvNVX(PL_patchlevel) = (NV)PERL_REVISION
263 + ((NV)PERL_VERSION / (NV)1000)
264 #if defined(PERL_SUBVERSION) && PERL_SUBVERSION > 0
265 + ((NV)PERL_SUBVERSION / (NV)1000000)
268 SvNOK_on(PL_patchlevel); /* dual valued */
269 SvUTF8_on(PL_patchlevel);
270 SvREADONLY_on(PL_patchlevel);
273 #if defined(LOCAL_PATCH_COUNT)
274 PL_localpatches = local_patches; /* For possible -v */
277 #ifdef HAVE_INTERP_INTERN
281 PerlIO_init(); /* Hook to IO system */
283 PL_fdpid = newAV(); /* for remembering popen pids by fd */
284 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
285 PL_errors = newSVpvn("",0);
291 =for apidoc perl_destruct
293 Shuts down a Perl interpreter. See L<perlembed>.
301 int destruct_level; /* 0=none, 1=full, 2=full with checks */
306 #endif /* USE_THREADS */
308 /* wait for all pseudo-forked children to finish */
309 PERL_WAIT_FOR_CHILDREN;
313 /* Pass 1 on any remaining threads: detach joinables, join zombies */
315 MUTEX_LOCK(&PL_threads_mutex);
316 DEBUG_S(PerlIO_printf(Perl_debug_log,
317 "perl_destruct: waiting for %d threads...\n",
319 for (t = thr->next; t != thr; t = t->next) {
320 MUTEX_LOCK(&t->mutex);
321 switch (ThrSTATE(t)) {
324 DEBUG_S(PerlIO_printf(Perl_debug_log,
325 "perl_destruct: joining zombie %p\n", t));
326 ThrSETSTATE(t, THRf_DEAD);
327 MUTEX_UNLOCK(&t->mutex);
330 * The SvREFCNT_dec below may take a long time (e.g. av
331 * may contain an object scalar whose destructor gets
332 * called) so we have to unlock threads_mutex and start
335 MUTEX_UNLOCK(&PL_threads_mutex);
337 SvREFCNT_dec((SV*)av);
338 DEBUG_S(PerlIO_printf(Perl_debug_log,
339 "perl_destruct: joined zombie %p OK\n", t));
341 case THRf_R_JOINABLE:
342 DEBUG_S(PerlIO_printf(Perl_debug_log,
343 "perl_destruct: detaching thread %p\n", t));
344 ThrSETSTATE(t, THRf_R_DETACHED);
346 * We unlock threads_mutex and t->mutex in the opposite order
347 * from which we locked them just so that DETACH won't
348 * deadlock if it panics. It's only a breach of good style
349 * not a bug since they are unlocks not locks.
351 MUTEX_UNLOCK(&PL_threads_mutex);
353 MUTEX_UNLOCK(&t->mutex);
356 DEBUG_S(PerlIO_printf(Perl_debug_log,
357 "perl_destruct: ignoring %p (state %u)\n",
359 MUTEX_UNLOCK(&t->mutex);
360 /* fall through and out */
363 /* We leave the above "Pass 1" loop with threads_mutex still locked */
365 /* Pass 2 on remaining threads: wait for the thread count to drop to one */
366 while (PL_nthreads > 1)
368 DEBUG_S(PerlIO_printf(Perl_debug_log,
369 "perl_destruct: final wait for %d threads\n",
371 COND_WAIT(&PL_nthreads_cond, &PL_threads_mutex);
373 /* At this point, we're the last thread */
374 MUTEX_UNLOCK(&PL_threads_mutex);
375 DEBUG_S(PerlIO_printf(Perl_debug_log, "perl_destruct: armageddon has arrived\n"));
376 MUTEX_DESTROY(&PL_threads_mutex);
377 COND_DESTROY(&PL_nthreads_cond);
379 #endif /* !defined(FAKE_THREADS) */
380 #endif /* USE_THREADS */
382 destruct_level = PL_perl_destruct_level;
386 if ((s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL"))) {
388 if (destruct_level < i)
398 /* We must account for everything. */
400 /* Destroy the main CV and syntax tree */
402 PL_curpad = AvARRAY(PL_comppad);
403 op_free(PL_main_root);
404 PL_main_root = Nullop;
406 PL_curcop = &PL_compiling;
407 PL_main_start = Nullop;
408 SvREFCNT_dec(PL_main_cv);
412 /* Tell PerlIO we are about to tear things apart in case
413 we have layers which are using resources that should
417 PerlIO_destruct(aTHX);
419 if (PL_sv_objcount) {
421 * Try to destruct global references. We do this first so that the
422 * destructors and destructees still exist. Some sv's might remain.
423 * Non-referenced objects are on their own.
428 /* unhook hooks which will soon be, or use, destroyed data */
429 SvREFCNT_dec(PL_warnhook);
430 PL_warnhook = Nullsv;
431 SvREFCNT_dec(PL_diehook);
434 /* call exit list functions */
435 while (PL_exitlistlen-- > 0)
436 PL_exitlist[PL_exitlistlen].fn(aTHXo_ PL_exitlist[PL_exitlistlen].ptr);
438 Safefree(PL_exitlist);
440 if (destruct_level == 0){
442 DEBUG_P(debprofdump());
444 /* The exit() function will do everything that needs doing. */
448 /* jettison our possibly duplicated environment */
450 #ifdef USE_ENVIRON_ARRAY
451 if (environ != PL_origenviron) {
454 for (i = 0; environ[i]; i++)
455 safesysfree(environ[i]);
456 /* Must use safesysfree() when working with environ. */
457 safesysfree(environ);
459 environ = PL_origenviron;
463 /* loosen bonds of global variables */
466 (void)PerlIO_close(PL_rsfp);
470 /* Filters for program text */
471 SvREFCNT_dec(PL_rsfp_filters);
472 PL_rsfp_filters = Nullav;
475 PL_preprocess = FALSE;
481 PL_doswitches = FALSE;
482 PL_dowarn = G_WARN_OFF;
483 PL_doextract = FALSE;
484 PL_sawampersand = FALSE; /* must save all match strings */
487 Safefree(PL_inplace);
489 SvREFCNT_dec(PL_patchlevel);
492 SvREFCNT_dec(PL_e_script);
493 PL_e_script = Nullsv;
496 /* magical thingies */
498 SvREFCNT_dec(PL_ofs_sv); /* $, */
501 SvREFCNT_dec(PL_ors_sv); /* $\ */
504 SvREFCNT_dec(PL_rs); /* $/ */
507 SvREFCNT_dec(PL_nrs); /* $/ helper */
510 PL_multiline = 0; /* $* */
511 Safefree(PL_osname); /* $^O */
514 SvREFCNT_dec(PL_statname);
515 PL_statname = Nullsv;
518 /* defgv, aka *_ should be taken care of elsewhere */
520 /* clean up after study() */
521 SvREFCNT_dec(PL_lastscream);
522 PL_lastscream = Nullsv;
523 Safefree(PL_screamfirst);
525 Safefree(PL_screamnext);
529 Safefree(PL_efloatbuf);
530 PL_efloatbuf = Nullch;
533 /* startup and shutdown function lists */
534 SvREFCNT_dec(PL_beginav);
535 SvREFCNT_dec(PL_endav);
536 SvREFCNT_dec(PL_checkav);
537 SvREFCNT_dec(PL_initav);
543 /* shortcuts just get cleared */
549 PL_argvoutgv = Nullgv;
551 PL_stderrgv = Nullgv;
552 PL_last_in_gv = Nullgv;
554 PL_debstash = Nullhv;
556 /* reset so print() ends up where we expect */
559 SvREFCNT_dec(PL_argvout_stack);
560 PL_argvout_stack = Nullav;
562 SvREFCNT_dec(PL_modglobal);
563 PL_modglobal = Nullhv;
564 SvREFCNT_dec(PL_preambleav);
565 PL_preambleav = Nullav;
566 SvREFCNT_dec(PL_subname);
568 SvREFCNT_dec(PL_linestr);
570 SvREFCNT_dec(PL_pidstatus);
571 PL_pidstatus = Nullhv;
572 SvREFCNT_dec(PL_toptarget);
573 PL_toptarget = Nullsv;
574 SvREFCNT_dec(PL_bodytarget);
575 PL_bodytarget = Nullsv;
576 PL_formtarget = Nullsv;
578 /* free locale stuff */
579 #ifdef USE_LOCALE_COLLATE
580 Safefree(PL_collation_name);
581 PL_collation_name = Nullch;
584 #ifdef USE_LOCALE_NUMERIC
585 Safefree(PL_numeric_name);
586 PL_numeric_name = Nullch;
587 SvREFCNT_dec(PL_numeric_radix_sv);
590 /* clear utf8 character classes */
591 SvREFCNT_dec(PL_utf8_alnum);
592 SvREFCNT_dec(PL_utf8_alnumc);
593 SvREFCNT_dec(PL_utf8_ascii);
594 SvREFCNT_dec(PL_utf8_alpha);
595 SvREFCNT_dec(PL_utf8_space);
596 SvREFCNT_dec(PL_utf8_cntrl);
597 SvREFCNT_dec(PL_utf8_graph);
598 SvREFCNT_dec(PL_utf8_digit);
599 SvREFCNT_dec(PL_utf8_upper);
600 SvREFCNT_dec(PL_utf8_lower);
601 SvREFCNT_dec(PL_utf8_print);
602 SvREFCNT_dec(PL_utf8_punct);
603 SvREFCNT_dec(PL_utf8_xdigit);
604 SvREFCNT_dec(PL_utf8_mark);
605 SvREFCNT_dec(PL_utf8_toupper);
606 SvREFCNT_dec(PL_utf8_tolower);
607 PL_utf8_alnum = Nullsv;
608 PL_utf8_alnumc = Nullsv;
609 PL_utf8_ascii = Nullsv;
610 PL_utf8_alpha = Nullsv;
611 PL_utf8_space = Nullsv;
612 PL_utf8_cntrl = Nullsv;
613 PL_utf8_graph = Nullsv;
614 PL_utf8_digit = Nullsv;
615 PL_utf8_upper = Nullsv;
616 PL_utf8_lower = Nullsv;
617 PL_utf8_print = Nullsv;
618 PL_utf8_punct = Nullsv;
619 PL_utf8_xdigit = Nullsv;
620 PL_utf8_mark = Nullsv;
621 PL_utf8_toupper = Nullsv;
622 PL_utf8_totitle = Nullsv;
623 PL_utf8_tolower = Nullsv;
625 if (!specialWARN(PL_compiling.cop_warnings))
626 SvREFCNT_dec(PL_compiling.cop_warnings);
627 PL_compiling.cop_warnings = Nullsv;
628 if (!specialCopIO(PL_compiling.cop_io))
629 SvREFCNT_dec(PL_compiling.cop_io);
630 PL_compiling.cop_io = Nullsv;
632 Safefree(CopFILE(&PL_compiling));
633 CopFILE(&PL_compiling) = Nullch;
634 Safefree(CopSTASHPV(&PL_compiling));
636 SvREFCNT_dec(CopFILEGV(&PL_compiling));
637 CopFILEGV(&PL_compiling) = Nullgv;
638 /* cop_stash is not refcounted */
641 /* Prepare to destruct main symbol table. */
646 SvREFCNT_dec(PL_curstname);
647 PL_curstname = Nullsv;
649 /* clear queued errors */
650 SvREFCNT_dec(PL_errors);
654 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
655 if (PL_scopestack_ix != 0)
656 Perl_warner(aTHX_ WARN_INTERNAL,
657 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
658 (long)PL_scopestack_ix);
659 if (PL_savestack_ix != 0)
660 Perl_warner(aTHX_ WARN_INTERNAL,
661 "Unbalanced saves: %ld more saves than restores\n",
662 (long)PL_savestack_ix);
663 if (PL_tmps_floor != -1)
664 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced tmps: %ld more allocs than frees\n",
665 (long)PL_tmps_floor + 1);
666 if (cxstack_ix != -1)
667 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced context: %ld more PUSHes than POPs\n",
668 (long)cxstack_ix + 1);
671 /* Now absolutely destruct everything, somehow or other, loops or no. */
672 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
673 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
675 /* the 2 is for PL_fdpid and PL_strtab */
676 while (PL_sv_count > 2 && sv_clean_all())
679 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
680 SvFLAGS(PL_fdpid) |= SVt_PVAV;
681 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
682 SvFLAGS(PL_strtab) |= SVt_PVHV;
684 AvREAL_off(PL_fdpid); /* no surviving entries */
685 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
688 #ifdef HAVE_INTERP_INTERN
692 /* Destruct the global string table. */
694 /* Yell and reset the HeVAL() slots that are still holding refcounts,
695 * so that sv_free() won't fail on them.
703 max = HvMAX(PL_strtab);
704 array = HvARRAY(PL_strtab);
707 if (hent && ckWARN_d(WARN_INTERNAL)) {
708 Perl_warner(aTHX_ WARN_INTERNAL,
709 "Unbalanced string table refcount: (%d) for \"%s\"",
710 HeVAL(hent) - Nullsv, HeKEY(hent));
711 HeVAL(hent) = Nullsv;
721 SvREFCNT_dec(PL_strtab);
724 /* free the pointer table used for cloning */
725 ptr_table_free(PL_ptr_table);
728 /* free special SVs */
730 SvREFCNT(&PL_sv_yes) = 0;
731 sv_clear(&PL_sv_yes);
732 SvANY(&PL_sv_yes) = NULL;
733 SvFLAGS(&PL_sv_yes) = 0;
735 SvREFCNT(&PL_sv_no) = 0;
737 SvANY(&PL_sv_no) = NULL;
738 SvFLAGS(&PL_sv_no) = 0;
740 SvREFCNT(&PL_sv_undef) = 0;
741 SvREADONLY_off(&PL_sv_undef);
743 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
744 Perl_warner(aTHX_ WARN_INTERNAL,"Scalars leaked: %ld\n", (long)PL_sv_count);
746 Safefree(PL_origfilename);
747 Safefree(PL_reg_start_tmp);
749 Safefree(PL_reg_curpm);
750 Safefree(PL_reg_poscache);
751 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
752 Safefree(PL_op_mask);
753 Safefree(PL_psig_ptr);
754 Safefree(PL_psig_name);
755 Safefree(PL_bitcount);
756 Safefree(PL_psig_pend);
758 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
760 DEBUG_P(debprofdump());
762 MUTEX_DESTROY(&PL_strtab_mutex);
763 MUTEX_DESTROY(&PL_sv_mutex);
764 MUTEX_DESTROY(&PL_eval_mutex);
765 MUTEX_DESTROY(&PL_cred_mutex);
766 MUTEX_DESTROY(&PL_fdpid_mutex);
767 COND_DESTROY(&PL_eval_cond);
768 #ifdef EMULATE_ATOMIC_REFCOUNTS
769 MUTEX_DESTROY(&PL_svref_mutex);
770 #endif /* EMULATE_ATOMIC_REFCOUNTS */
772 /* As the penultimate thing, free the non-arena SV for thrsv */
773 Safefree(SvPVX(PL_thrsv));
774 Safefree(SvANY(PL_thrsv));
777 #endif /* USE_THREADS */
781 /* As the absolutely last thing, free the non-arena SV for mess() */
784 /* it could have accumulated taint magic */
785 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
788 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
789 moremagic = mg->mg_moremagic;
790 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
792 Safefree(mg->mg_ptr);
796 /* we know that type >= SVt_PV */
797 (void)SvOOK_off(PL_mess_sv);
798 Safefree(SvPVX(PL_mess_sv));
799 Safefree(SvANY(PL_mess_sv));
800 Safefree(PL_mess_sv);
806 =for apidoc perl_free
808 Releases a Perl interpreter. See L<perlembed>.
816 #if defined(PERL_OBJECT)
819 # if defined(WIN32) || defined(NETWARE)
820 # if defined(PERL_IMPLICIT_SYS)
822 void *host = nw_internal_host;
824 void *host = w32_internal_host;
827 if (PerlProc_lasthost()) {
833 nw5_delete_internal_host(host);
835 win32_delete_internal_host(host);
848 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
850 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
851 PL_exitlist[PL_exitlistlen].fn = fn;
852 PL_exitlist[PL_exitlistlen].ptr = ptr;
857 =for apidoc perl_parse
859 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
865 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
874 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
877 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
878 setuid perl scripts securely.\n");
882 #if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
883 _dyld_lookup_and_bind
884 ("__environ", (unsigned long *) &environ_pointer, NULL);
889 #ifdef USE_ENVIRON_ARRAY
890 PL_origenviron = environ;
895 /* Come here if running an undumped a.out. */
897 PL_origfilename = savepv(argv[0]);
898 PL_do_undump = FALSE;
899 cxstack_ix = -1; /* start label stack again */
901 init_postdump_symbols(argc,argv,env);
906 PL_curpad = AvARRAY(PL_comppad);
907 op_free(PL_main_root);
908 PL_main_root = Nullop;
910 PL_main_start = Nullop;
911 SvREFCNT_dec(PL_main_cv);
915 oldscope = PL_scopestack_ix;
916 PL_dowarn = G_WARN_OFF;
918 #ifdef PERL_FLEXIBLE_EXCEPTIONS
919 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
925 #ifndef PERL_FLEXIBLE_EXCEPTIONS
926 parse_body(env,xsinit);
929 call_list(oldscope, PL_checkav);
936 /* my_exit() was called */
937 while (PL_scopestack_ix > oldscope)
940 PL_curstash = PL_defstash;
942 call_list(oldscope, PL_checkav);
943 ret = STATUS_NATIVE_EXPORT;
946 PerlIO_printf(Perl_error_log, "panic: top_env\n");
954 #ifdef PERL_FLEXIBLE_EXCEPTIONS
956 S_vparse_body(pTHX_ va_list args)
958 char **env = va_arg(args, char**);
959 XSINIT_t xsinit = va_arg(args, XSINIT_t);
961 return parse_body(env, xsinit);
966 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
968 int argc = PL_origargc;
969 char **argv = PL_origargv;
970 char *scriptname = NULL;
972 VOL bool dosearch = FALSE;
977 char *popts, *cddir = Nullch;
979 sv_setpvn(PL_linestr,"",0);
980 sv = newSVpvn("",0); /* first used for -I flags */
984 for (argc--,argv++; argc > 0; argc--,argv++) {
985 if (argv[0][0] != '-' || !argv[0][1])
989 validarg = " PHOOEY ";
998 win32_argv2utf8(argc-1, argv+1);
1001 #ifndef PERL_STRICT_CR
1025 if ((s = moreswitches(s)))
1035 #ifdef MACOS_TRADITIONAL
1036 /* ignore -e for Dev:Pseudo argument */
1037 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
1040 if (PL_euid != PL_uid || PL_egid != PL_gid)
1041 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
1043 PL_e_script = newSVpvn("",0);
1044 filter_add(read_e_script, NULL);
1047 sv_catpv(PL_e_script, s);
1049 sv_catpv(PL_e_script, argv[1]);
1053 Perl_croak(aTHX_ "No code specified for -e");
1054 sv_catpv(PL_e_script, "\n");
1057 case 'I': /* -I handled both here and in moreswitches() */
1059 if (!*++s && (s=argv[1]) != Nullch) {
1064 STRLEN len = strlen(s);
1065 p = savepvn(s, len);
1066 incpush(p, TRUE, TRUE);
1067 sv_catpvn(sv, "-I", 2);
1068 sv_catpvn(sv, p, len);
1069 sv_catpvn(sv, " ", 1);
1073 Perl_croak(aTHX_ "No directory specified for -I");
1077 PL_preprocess = TRUE;
1087 PL_preambleav = newAV();
1088 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
1090 PL_Sv = newSVpv("print myconfig();",0);
1092 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
1094 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
1096 sv_catpv(PL_Sv,"\" Compile-time options:");
1098 sv_catpv(PL_Sv," DEBUGGING");
1100 # ifdef MULTIPLICITY
1101 sv_catpv(PL_Sv," MULTIPLICITY");
1104 sv_catpv(PL_Sv," USE_THREADS");
1106 # ifdef USE_ITHREADS
1107 sv_catpv(PL_Sv," USE_ITHREADS");
1109 # ifdef USE_64_BIT_INT
1110 sv_catpv(PL_Sv," USE_64_BIT_INT");
1112 # ifdef USE_64_BIT_ALL
1113 sv_catpv(PL_Sv," USE_64_BIT_ALL");
1115 # ifdef USE_LONG_DOUBLE
1116 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1118 # ifdef USE_LARGE_FILES
1119 sv_catpv(PL_Sv," USE_LARGE_FILES");
1122 sv_catpv(PL_Sv," USE_SOCKS");
1125 sv_catpv(PL_Sv," PERL_OBJECT");
1127 # ifdef PERL_IMPLICIT_CONTEXT
1128 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1130 # ifdef PERL_IMPLICIT_SYS
1131 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1133 sv_catpv(PL_Sv,"\\n\",");
1135 #if defined(LOCAL_PATCH_COUNT)
1136 if (LOCAL_PATCH_COUNT > 0) {
1138 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
1139 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1140 if (PL_localpatches[i])
1141 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
1145 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
1148 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
1150 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
1153 sv_catpv(PL_Sv, "; \
1155 @env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; ");
1158 push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
1161 print \" \\%ENV:\\n @env\\n\" if @env; \
1162 print \" \\@INC:\\n @INC\\n\";");
1165 PL_Sv = newSVpv("config_vars(qw(",0);
1166 sv_catpv(PL_Sv, ++s);
1167 sv_catpv(PL_Sv, "))");
1170 av_push(PL_preambleav, PL_Sv);
1171 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1174 PL_doextract = TRUE;
1182 if (!*++s || isSPACE(*s)) {
1186 /* catch use of gnu style long options */
1187 if (strEQ(s, "version")) {
1191 if (strEQ(s, "help")) {
1198 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1204 #ifndef SECURE_INTERNAL_GETENV
1207 (popts = PerlEnv_getenv("PERL5OPT")))
1212 if (*s == '-' && *(s+1) == 'T')
1227 if (!strchr("DIMUdmw", *s))
1228 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
1241 scriptname = argv[0];
1244 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1246 else if (scriptname == Nullch) {
1248 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1256 open_script(scriptname,dosearch,sv,&fdscript);
1258 validate_suid(validarg, scriptname,fdscript);
1261 #if defined(SIGCHLD) || defined(SIGCLD)
1264 # define SIGCHLD SIGCLD
1266 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1267 if (sigstate == SIG_IGN) {
1268 if (ckWARN(WARN_SIGNAL))
1269 Perl_warner(aTHX_ WARN_SIGNAL,
1270 "Can't ignore signal CHLD, forcing to default");
1271 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1277 #ifdef MACOS_TRADITIONAL
1278 if (PL_doextract || gMacPerl_AlwaysExtract) {
1283 if (cddir && PerlDir_chdir(cddir) < 0)
1284 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1288 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1289 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1290 CvUNIQUE_on(PL_compcv);
1292 PL_comppad = newAV();
1293 av_push(PL_comppad, Nullsv);
1294 PL_curpad = AvARRAY(PL_comppad);
1295 PL_comppad_name = newAV();
1296 PL_comppad_name_fill = 0;
1297 PL_min_intro_pending = 0;
1300 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
1301 PL_curpad[0] = (SV*)newAV();
1302 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1303 CvOWNER(PL_compcv) = 0;
1304 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1305 MUTEX_INIT(CvMUTEXP(PL_compcv));
1306 #endif /* USE_THREADS */
1308 comppadlist = newAV();
1309 AvREAL_off(comppadlist);
1310 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1311 av_store(comppadlist, 1, (SV*)PL_comppad);
1312 CvPADLIST(PL_compcv) = comppadlist;
1315 boot_core_UNIVERSAL();
1317 boot_core_xsutils();
1321 (*xsinit)(aTHXo); /* in case linked C routines want magical variables */
1323 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
1329 # ifdef HAS_SOCKS5_INIT
1330 socks5_init(argv[0]);
1336 init_predump_symbols();
1337 /* init_postdump_symbols not currently designed to be called */
1338 /* more than once (ENV isn't cleared first, for example) */
1339 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
1341 init_postdump_symbols(argc,argv,env);
1345 /* now parse the script */
1347 SETERRNO(0,SS$_NORMAL);
1349 #ifdef MACOS_TRADITIONAL
1350 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1352 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1354 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1355 MacPerl_MPWFileName(PL_origfilename));
1359 if (yyparse() || PL_error_count) {
1361 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
1363 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1368 CopLINE_set(PL_curcop, 0);
1369 PL_curstash = PL_defstash;
1370 PL_preprocess = FALSE;
1372 SvREFCNT_dec(PL_e_script);
1373 PL_e_script = Nullsv;
1376 /* now that script is parsed, we can modify record separator */
1377 SvREFCNT_dec(PL_rs);
1378 PL_rs = SvREFCNT_inc(PL_nrs);
1379 sv_setsv(get_sv("/", TRUE), PL_rs);
1384 SAVECOPFILE(PL_curcop);
1385 SAVECOPLINE(PL_curcop);
1386 gv_check(PL_defstash);
1393 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1394 dump_mstats("after compilation:");
1403 =for apidoc perl_run
1405 Tells a Perl interpreter to run. See L<perlembed>.
1420 oldscope = PL_scopestack_ix;
1422 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1424 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1430 cxstack_ix = -1; /* start context stack again */
1432 case 0: /* normal completion */
1433 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1438 case 2: /* my_exit() */
1439 while (PL_scopestack_ix > oldscope)
1442 PL_curstash = PL_defstash;
1443 if (PL_endav && !PL_minus_c)
1444 call_list(oldscope, PL_endav);
1446 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1447 dump_mstats("after execution: ");
1449 ret = STATUS_NATIVE_EXPORT;
1453 POPSTACK_TO(PL_mainstack);
1456 PerlIO_printf(Perl_error_log, "panic: restartop\n");
1466 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1468 S_vrun_body(pTHX_ va_list args)
1470 I32 oldscope = va_arg(args, I32);
1472 return run_body(oldscope);
1478 S_run_body(pTHX_ I32 oldscope)
1480 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
1481 PL_sawampersand ? "Enabling" : "Omitting"));
1483 if (!PL_restartop) {
1484 DEBUG_x(dump_all());
1485 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
1486 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1490 #ifdef MACOS_TRADITIONAL
1491 PerlIO_printf(Perl_error_log, "%s syntax OK\n", MacPerl_MPWFileName(PL_origfilename));
1493 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
1497 if (PERLDB_SINGLE && PL_DBsingle)
1498 sv_setiv(PL_DBsingle, 1);
1500 call_list(oldscope, PL_initav);
1506 PL_op = PL_restartop;
1510 else if (PL_main_start) {
1511 CvDEPTH(PL_main_cv) = 1;
1512 PL_op = PL_main_start;
1522 =for apidoc p||get_sv
1524 Returns the SV of the specified Perl scalar. If C<create> is set and the
1525 Perl variable does not exist then it will be created. If C<create> is not
1526 set and the variable does not exist then NULL is returned.
1532 Perl_get_sv(pTHX_ const char *name, I32 create)
1536 if (name[1] == '\0' && !isALPHA(name[0])) {
1537 PADOFFSET tmp = find_threadsv(name);
1538 if (tmp != NOT_IN_PAD)
1539 return THREADSV(tmp);
1541 #endif /* USE_THREADS */
1542 gv = gv_fetchpv(name, create, SVt_PV);
1549 =for apidoc p||get_av
1551 Returns the AV of the specified Perl array. If C<create> is set and the
1552 Perl variable does not exist then it will be created. If C<create> is not
1553 set and the variable does not exist then NULL is returned.
1559 Perl_get_av(pTHX_ const char *name, I32 create)
1561 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1570 =for apidoc p||get_hv
1572 Returns the HV of the specified Perl hash. If C<create> is set and the
1573 Perl variable does not exist then it will be created. If C<create> is not
1574 set and the variable does not exist then NULL is returned.
1580 Perl_get_hv(pTHX_ const char *name, I32 create)
1582 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1591 =for apidoc p||get_cv
1593 Returns the CV of the specified Perl subroutine. If C<create> is set and
1594 the Perl subroutine does not exist then it will be declared (which has the
1595 same effect as saying C<sub name;>). If C<create> is not set and the
1596 subroutine does not exist then NULL is returned.
1602 Perl_get_cv(pTHX_ const char *name, I32 create)
1604 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
1605 /* XXX unsafe for threads if eval_owner isn't held */
1606 /* XXX this is probably not what they think they're getting.
1607 * It has the same effect as "sub name;", i.e. just a forward
1609 if (create && !GvCVu(gv))
1610 return newSUB(start_subparse(FALSE, 0),
1611 newSVOP(OP_CONST, 0, newSVpv(name,0)),
1619 /* Be sure to refetch the stack pointer after calling these routines. */
1622 =for apidoc p||call_argv
1624 Performs a callback to the specified Perl sub. See L<perlcall>.
1630 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
1632 /* See G_* flags in cop.h */
1633 /* null terminated arg list */
1640 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
1645 return call_pv(sub_name, flags);
1649 =for apidoc p||call_pv
1651 Performs a callback to the specified Perl sub. See L<perlcall>.
1657 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
1658 /* name of the subroutine */
1659 /* See G_* flags in cop.h */
1661 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
1665 =for apidoc p||call_method
1667 Performs a callback to the specified Perl method. The blessed object must
1668 be on the stack. See L<perlcall>.
1674 Perl_call_method(pTHX_ const char *methname, I32 flags)
1675 /* name of the subroutine */
1676 /* See G_* flags in cop.h */
1678 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
1681 /* May be called with any of a CV, a GV, or an SV containing the name. */
1683 =for apidoc p||call_sv
1685 Performs a callback to the Perl sub whose name is in the SV. See
1692 Perl_call_sv(pTHX_ SV *sv, I32 flags)
1693 /* See G_* flags in cop.h */
1696 LOGOP myop; /* fake syntax tree node */
1699 volatile I32 retval = 0;
1701 bool oldcatch = CATCH_GET;
1706 if (flags & G_DISCARD) {
1711 Zero(&myop, 1, LOGOP);
1712 myop.op_next = Nullop;
1713 if (!(flags & G_NOARGS))
1714 myop.op_flags |= OPf_STACKED;
1715 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1716 (flags & G_ARRAY) ? OPf_WANT_LIST :
1721 EXTEND(PL_stack_sp, 1);
1722 *++PL_stack_sp = sv;
1724 oldscope = PL_scopestack_ix;
1726 if (PERLDB_SUB && PL_curstash != PL_debstash
1727 /* Handle first BEGIN of -d. */
1728 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
1729 /* Try harder, since this may have been a sighandler, thus
1730 * curstash may be meaningless. */
1731 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
1732 && !(flags & G_NODEBUG))
1733 PL_op->op_private |= OPpENTERSUB_DB;
1735 if (flags & G_METHOD) {
1736 Zero(&method_op, 1, UNOP);
1737 method_op.op_next = PL_op;
1738 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1739 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
1740 PL_op = (OP*)&method_op;
1743 if (!(flags & G_EVAL)) {
1745 call_body((OP*)&myop, FALSE);
1746 retval = PL_stack_sp - (PL_stack_base + oldmark);
1747 CATCH_SET(oldcatch);
1750 myop.op_other = (OP*)&myop;
1752 /* we're trying to emulate pp_entertry() here */
1754 register PERL_CONTEXT *cx;
1755 I32 gimme = GIMME_V;
1760 push_return(Nullop);
1761 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
1763 PL_eval_root = PL_op; /* Only needed so that goto works right. */
1765 PL_in_eval = EVAL_INEVAL;
1766 if (flags & G_KEEPERR)
1767 PL_in_eval |= EVAL_KEEPERR;
1773 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1775 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1782 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1784 call_body((OP*)&myop, FALSE);
1786 retval = PL_stack_sp - (PL_stack_base + oldmark);
1787 if (!(flags & G_KEEPERR))
1794 /* my_exit() was called */
1795 PL_curstash = PL_defstash;
1798 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1799 Perl_croak(aTHX_ "Callback called exit");
1804 PL_op = PL_restartop;
1808 PL_stack_sp = PL_stack_base + oldmark;
1809 if (flags & G_ARRAY)
1813 *++PL_stack_sp = &PL_sv_undef;
1818 if (PL_scopestack_ix > oldscope) {
1822 register PERL_CONTEXT *cx;
1834 if (flags & G_DISCARD) {
1835 PL_stack_sp = PL_stack_base + oldmark;
1844 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1846 S_vcall_body(pTHX_ va_list args)
1848 OP *myop = va_arg(args, OP*);
1849 int is_eval = va_arg(args, int);
1851 call_body(myop, is_eval);
1857 S_call_body(pTHX_ OP *myop, int is_eval)
1859 if (PL_op == myop) {
1861 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
1863 PL_op = Perl_pp_entersub(aTHX); /* this does */
1869 /* Eval a string. The G_EVAL flag is always assumed. */
1872 =for apidoc p||eval_sv
1874 Tells Perl to C<eval> the string in the SV.
1880 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
1882 /* See G_* flags in cop.h */
1885 UNOP myop; /* fake syntax tree node */
1886 volatile I32 oldmark = SP - PL_stack_base;
1887 volatile I32 retval = 0;
1893 if (flags & G_DISCARD) {
1900 Zero(PL_op, 1, UNOP);
1901 EXTEND(PL_stack_sp, 1);
1902 *++PL_stack_sp = sv;
1903 oldscope = PL_scopestack_ix;
1905 if (!(flags & G_NOARGS))
1906 myop.op_flags = OPf_STACKED;
1907 myop.op_next = Nullop;
1908 myop.op_type = OP_ENTEREVAL;
1909 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1910 (flags & G_ARRAY) ? OPf_WANT_LIST :
1912 if (flags & G_KEEPERR)
1913 myop.op_flags |= OPf_SPECIAL;
1915 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1917 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1924 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1926 call_body((OP*)&myop,TRUE);
1928 retval = PL_stack_sp - (PL_stack_base + oldmark);
1929 if (!(flags & G_KEEPERR))
1936 /* my_exit() was called */
1937 PL_curstash = PL_defstash;
1940 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1941 Perl_croak(aTHX_ "Callback called exit");
1946 PL_op = PL_restartop;
1950 PL_stack_sp = PL_stack_base + oldmark;
1951 if (flags & G_ARRAY)
1955 *++PL_stack_sp = &PL_sv_undef;
1961 if (flags & G_DISCARD) {
1962 PL_stack_sp = PL_stack_base + oldmark;
1972 =for apidoc p||eval_pv
1974 Tells Perl to C<eval> the given string and return an SV* result.
1980 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
1983 SV* sv = newSVpv(p, 0);
1985 eval_sv(sv, G_SCALAR);
1992 if (croak_on_error && SvTRUE(ERRSV)) {
1994 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
2000 /* Require a module. */
2003 =for apidoc p||require_pv
2005 Tells Perl to C<require> the file named by the string argument. It is
2006 analogous to the Perl code C<eval "require '$file'">. It's even
2007 implemented that way; consider using Perl_load_module instead.
2012 Perl_require_pv(pTHX_ const char *pv)
2016 PUSHSTACKi(PERLSI_REQUIRE);
2018 sv = sv_newmortal();
2019 sv_setpv(sv, "require '");
2022 eval_sv(sv, G_DISCARD);
2028 Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
2032 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
2033 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
2037 S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
2039 /* This message really ought to be max 23 lines.
2040 * Removed -h because the user already knows that opton. Others? */
2042 static char *usage_msg[] = {
2043 "-0[octal] specify record separator (\\0, if no argument)",
2044 "-a autosplit mode with -n or -p (splits $_ into @F)",
2045 "-C enable native wide character system interfaces",
2046 "-c check syntax only (runs BEGIN and CHECK blocks)",
2047 "-d[:debugger] run program under debugger",
2048 "-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2049 "-e 'command' one line of program (several -e's allowed, omit programfile)",
2050 "-F/pattern/ split() pattern for -a switch (//'s are optional)",
2051 "-i[extension] edit <> files in place (makes backup if extension supplied)",
2052 "-Idirectory specify @INC/#include directory (several -I's allowed)",
2053 "-l[octal] enable line ending processing, specifies line terminator",
2054 "-[mM][-]module execute `use/no module...' before executing program",
2055 "-n assume 'while (<>) { ... }' loop around program",
2056 "-p assume loop like -n but print line also, like sed",
2057 "-P run program through C preprocessor before compilation",
2058 "-s enable rudimentary parsing for switches after programfile",
2059 "-S look for programfile using PATH environment variable",
2060 "-T enable tainting checks",
2061 "-u dump core after parsing program",
2062 "-U allow unsafe operations",
2063 "-v print version, subversion (includes VERY IMPORTANT perl info)",
2064 "-V[:variable] print configuration summary (or a single Config.pm variable)",
2065 "-w enable many useful warnings (RECOMMENDED)",
2066 "-W enable all warnings",
2067 "-X disable all warnings",
2068 "-x[directory] strip off text before #!perl line and perhaps cd to directory",
2072 char **p = usage_msg;
2074 PerlIO_printf(PerlIO_stdout(),
2075 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2078 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
2081 /* This routine handles any switches that can be given during run */
2084 Perl_moreswitches(pTHX_ char *s)
2092 numlen = 0; /* disallow underscores */
2093 rschar = (U32)scan_oct(s, 4, &numlen);
2094 SvREFCNT_dec(PL_nrs);
2095 if (rschar & ~((U8)~0))
2096 PL_nrs = &PL_sv_undef;
2097 else if (!rschar && numlen >= 2)
2098 PL_nrs = newSVpvn("", 0);
2101 PL_nrs = newSVpvn(&ch, 1);
2106 PL_widesyscalls = TRUE;
2111 PL_splitstr = savepv(s + 1);
2125 /* The following permits -d:Mod to accepts arguments following an =
2126 in the fashion that -MSome::Mod does. */
2127 if (*s == ':' || *s == '=') {
2130 sv = newSVpv("use Devel::", 0);
2132 /* We now allow -d:Module=Foo,Bar */
2133 while(isALNUM(*s) || *s==':') ++s;
2135 sv_catpv(sv, start);
2137 sv_catpvn(sv, start, s-start);
2138 sv_catpv(sv, " split(/,/,q{");
2143 my_setenv("PERL5DB", SvPV(sv, PL_na));
2146 PL_perldb = PERLDB_ALL;
2154 if (isALPHA(s[1])) {
2155 /* if adding extra options, remember to update DEBUG_MASK */
2156 static char debopts[] = "psltocPmfrxuLHXDSTR";
2159 for (s++; *s && (d = strchr(debopts,*s)); s++)
2160 PL_debug |= 1 << (d - debopts);
2163 PL_debug = atoi(s+1);
2164 for (s++; isDIGIT(*s); s++) ;
2166 PL_debug |= DEBUG_TOP_FLAG;
2168 if (ckWARN_d(WARN_DEBUGGING))
2169 Perl_warner(aTHX_ WARN_DEBUGGING,
2170 "Recompile perl with -DDEBUGGING to use -D switch\n");
2171 for (s++; isALNUM(*s); s++) ;
2177 usage(PL_origargv[0]);
2181 Safefree(PL_inplace);
2182 PL_inplace = savepv(s+1);
2184 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
2187 if (*s == '-') /* Additional switches on #! line. */
2191 case 'I': /* -I handled both here and in parse_perl() */
2194 while (*s && isSPACE(*s))
2199 /* ignore trailing spaces (possibly followed by other switches) */
2201 for (e = p; *e && !isSPACE(*e); e++) ;
2205 } while (*p && *p != '-');
2206 e = savepvn(s, e-s);
2207 incpush(e, TRUE, TRUE);
2214 Perl_croak(aTHX_ "No directory specified for -I");
2220 SvREFCNT_dec(PL_ors_sv);
2224 PL_ors_sv = newSVpvn("\n",1);
2225 numlen = 0; /* disallow underscores */
2226 *SvPVX(PL_ors_sv) = (char)scan_oct(s, 3 + (*s == '0'), &numlen);
2230 if (RsPARA(PL_nrs)) {
2231 PL_ors_sv = newSVpvn("\n\n",2);
2234 PL_ors_sv = newSVsv(PL_nrs);
2239 forbid_setid("-M"); /* XXX ? */
2242 forbid_setid("-m"); /* XXX ? */
2247 /* -M-foo == 'no foo' */
2248 if (*s == '-') { use = "no "; ++s; }
2249 sv = newSVpv(use,0);
2251 /* We allow -M'Module qw(Foo Bar)' */
2252 while(isALNUM(*s) || *s==':') ++s;
2254 sv_catpv(sv, start);
2255 if (*(start-1) == 'm') {
2257 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
2258 sv_catpv( sv, " ()");
2262 Perl_croak(aTHX_ "Module name required with -%c option",
2264 sv_catpvn(sv, start, s-start);
2265 sv_catpv(sv, " split(/,/,q{");
2271 PL_preambleav = newAV();
2272 av_push(PL_preambleav, sv);
2275 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
2287 PL_doswitches = TRUE;
2292 Perl_croak(aTHX_ "Too late for \"-T\" option");
2296 #ifdef MACOS_TRADITIONAL
2297 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2299 PL_do_undump = TRUE;
2308 PerlIO_printf(PerlIO_stdout(),
2309 Perl_form(aTHX_ "\nThis is perl, v%"VDf" built for %s",
2310 PL_patchlevel, ARCHNAME));
2312 /* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
2313 PerlIO_printf(PerlIO_stdout(),
2314 Perl_form(aTHX_ "\nThis is perl, version %vd\n", PL_patchlevel));
2315 PerlIO_printf(PerlIO_stdout(),
2316 Perl_form(aTHX_ " built under %s at %s %s\n",
2317 OSNAME, __DATE__, __TIME__));
2318 PerlIO_printf(PerlIO_stdout(),
2319 Perl_form(aTHX_ " OS Specific Release: %s\n",
2323 #if defined(LOCAL_PATCH_COUNT)
2324 if (LOCAL_PATCH_COUNT > 0)
2325 PerlIO_printf(PerlIO_stdout(),
2326 "\n(with %d registered patch%s, "
2327 "see perl -V for more detail)",
2328 (int)LOCAL_PATCH_COUNT,
2329 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
2332 PerlIO_printf(PerlIO_stdout(),
2333 "\n\nCopyright 1987-2001, Larry Wall\n");
2334 #ifdef MACOS_TRADITIONAL
2335 PerlIO_printf(PerlIO_stdout(),
2336 "\nMac OS port Copyright (c) 1991-2001, Matthias Neeracher\n");
2339 PerlIO_printf(PerlIO_stdout(),
2340 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
2343 PerlIO_printf(PerlIO_stdout(),
2344 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2345 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
2348 PerlIO_printf(PerlIO_stdout(),
2349 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2350 "Version 5 port Copyright (c) 1994-1999, Andreas Kaiser, Ilya Zakharevich\n");
2353 PerlIO_printf(PerlIO_stdout(),
2354 "atariST series port, ++jrb bammi@cadence.com\n");
2357 PerlIO_printf(PerlIO_stdout(),
2358 "BeOS port Copyright Tom Spindler, 1997-1999\n");
2361 PerlIO_printf(PerlIO_stdout(),
2362 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2001\n");
2365 PerlIO_printf(PerlIO_stdout(),
2366 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
2369 PerlIO_printf(PerlIO_stdout(),
2370 "Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n");
2373 PerlIO_printf(PerlIO_stdout(),
2374 "VM/ESA port by Neale Ferguson, 1998-1999\n");
2377 PerlIO_printf(PerlIO_stdout(),
2378 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
2381 PerlIO_printf(PerlIO_stdout(),
2382 "MiNT port by Guido Flohr, 1997-1999\n");
2385 PerlIO_printf(PerlIO_stdout(),
2386 "EPOC port by Olaf Flebbe, 1999-2000\n");
2388 #ifdef BINARY_BUILD_NOTICE
2389 BINARY_BUILD_NOTICE;
2391 PerlIO_printf(PerlIO_stdout(),
2393 Perl may be copied only under the terms of either the Artistic License or the\n\
2394 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
2395 Complete documentation for Perl, including FAQ lists, should be found on\n\
2396 this system using `man perl' or `perldoc perl'. If you have access to the\n\
2397 Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
2400 if (! (PL_dowarn & G_WARN_ALL_MASK))
2401 PL_dowarn |= G_WARN_ON;
2405 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
2406 PL_compiling.cop_warnings = pWARN_ALL ;
2410 PL_dowarn = G_WARN_ALL_OFF;
2411 PL_compiling.cop_warnings = pWARN_NONE ;
2416 if (s[1] == '-') /* Additional switches on #! line. */
2421 #if defined(WIN32) || !defined(PERL_STRICT_CR)
2427 #ifdef ALTERNATE_SHEBANG
2428 case 'S': /* OS/2 needs -S on "extproc" line. */
2436 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
2441 /* compliments of Tom Christiansen */
2443 /* unexec() can be found in the Gnu emacs distribution */
2444 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
2447 Perl_my_unexec(pTHX)
2455 prog = newSVpv(BIN_EXP, 0);
2456 sv_catpv(prog, "/perl");
2457 file = newSVpv(PL_origfilename, 0);
2458 sv_catpv(file, ".perldump");
2460 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2461 /* unexec prints msg to stderr in case of failure */
2462 PerlProc_exit(status);
2465 # include <lib$routines.h>
2466 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
2468 ABORT(); /* for use with undump */
2473 /* initialize curinterp */
2478 #ifdef PERL_OBJECT /* XXX kludge */
2481 PL_chopset = " \n-"; \
2482 PL_copline = NOLINE; \
2483 PL_curcop = &PL_compiling;\
2484 PL_curcopdb = NULL; \
2486 PL_dumpindent = 4; \
2487 PL_laststatval = -1; \
2488 PL_laststype = OP_STAT; \
2489 PL_maxscream = -1; \
2490 PL_maxsysfd = MAXSYSFD; \
2491 PL_statname = Nullsv; \
2492 PL_tmps_floor = -1; \
2494 PL_op_mask = NULL; \
2495 PL_laststatval = -1; \
2496 PL_laststype = OP_STAT; \
2497 PL_mess_sv = Nullsv; \
2498 PL_splitstr = " "; \
2499 PL_generation = 100; \
2500 PL_exitlist = NULL; \
2501 PL_exitlistlen = 0; \
2503 PL_in_clean_objs = FALSE; \
2504 PL_in_clean_all = FALSE; \
2505 PL_profiledata = NULL; \
2507 PL_rsfp_filters = Nullav; \
2512 # ifdef MULTIPLICITY
2513 # define PERLVAR(var,type)
2514 # define PERLVARA(var,n,type)
2515 # if defined(PERL_IMPLICIT_CONTEXT)
2516 # if defined(USE_THREADS)
2517 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2518 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2519 # else /* !USE_THREADS */
2520 # define PERLVARI(var,type,init) aTHX->var = init;
2521 # define PERLVARIC(var,type,init) aTHX->var = init;
2522 # endif /* USE_THREADS */
2524 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2525 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2527 # include "intrpvar.h"
2528 # ifndef USE_THREADS
2529 # include "thrdvar.h"
2536 # define PERLVAR(var,type)
2537 # define PERLVARA(var,n,type)
2538 # define PERLVARI(var,type,init) PL_##var = init;
2539 # define PERLVARIC(var,type,init) PL_##var = init;
2540 # include "intrpvar.h"
2541 # ifndef USE_THREADS
2542 # include "thrdvar.h"
2554 S_init_main_stash(pTHX)
2558 /* Note that strtab is a rather special HV. Assumptions are made
2559 about not iterating on it, and not adding tie magic to it.
2560 It is properly deallocated in perl_destruct() */
2561 PL_strtab = newHV();
2563 MUTEX_INIT(&PL_strtab_mutex);
2565 HvSHAREKEYS_off(PL_strtab); /* mandatory */
2566 hv_ksplit(PL_strtab, 512);
2568 PL_curstash = PL_defstash = newHV();
2569 PL_curstname = newSVpvn("main",4);
2570 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2571 SvREFCNT_dec(GvHV(gv));
2572 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
2574 HvNAME(PL_defstash) = savepv("main");
2575 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2576 GvMULTI_on(PL_incgv);
2577 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2578 GvMULTI_on(PL_hintgv);
2579 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2580 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2581 GvMULTI_on(PL_errgv);
2582 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2583 GvMULTI_on(PL_replgv);
2584 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
2585 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2586 sv_setpvn(ERRSV, "", 0);
2587 PL_curstash = PL_defstash;
2588 CopSTASH_set(&PL_compiling, PL_defstash);
2589 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
2590 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
2591 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
2592 /* We must init $/ before switches are processed. */
2593 sv_setpvn(get_sv("/", TRUE), "\n", 1);
2597 S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
2602 PL_origfilename = savepv("-e");
2605 /* if find_script() returns, it returns a malloc()-ed value */
2606 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
2608 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2609 char *s = scriptname + 8;
2610 *fdscript = atoi(s);
2614 scriptname = savepv(s + 1);
2615 Safefree(PL_origfilename);
2616 PL_origfilename = scriptname;
2622 Safefree(CopFILE(PL_curcop));
2624 SvREFCNT_dec(CopFILEGV(PL_curcop));
2626 CopFILE_set(PL_curcop, PL_origfilename);
2627 if (strEQ(PL_origfilename,"-"))
2629 if (*fdscript >= 0) {
2630 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
2631 #if defined(HAS_FCNTL) && defined(F_SETFD)
2633 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2636 else if (PL_preprocess) {
2637 char *cpp_cfg = CPPSTDIN;
2638 SV *cpp = newSVpvn("",0);
2639 SV *cmd = NEWSV(0,0);
2641 if (strEQ(cpp_cfg, "cppstdin"))
2642 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
2643 sv_catpv(cpp, cpp_cfg);
2645 sv_catpvn(sv, "-I", 2);
2646 sv_catpv(sv,PRIVLIB_EXP);
2648 DEBUG_P(PerlIO_printf(Perl_debug_log,
2649 "PL_preprocess: scriptname=\"%s\", cpp=\"%s\", sv=\"%s\", CPPMINUS=\"%s\"\n",
2650 scriptname, SvPVX (cpp), SvPVX (sv), CPPMINUS));
2651 #if defined(MSDOS) || defined(WIN32)
2652 Perl_sv_setpvf(aTHX_ cmd, "\
2653 sed %s -e \"/^[^#]/b\" \
2654 -e \"/^#[ ]*include[ ]/b\" \
2655 -e \"/^#[ ]*define[ ]/b\" \
2656 -e \"/^#[ ]*if[ ]/b\" \
2657 -e \"/^#[ ]*ifdef[ ]/b\" \
2658 -e \"/^#[ ]*ifndef[ ]/b\" \
2659 -e \"/^#[ ]*else/b\" \
2660 -e \"/^#[ ]*elif[ ]/b\" \
2661 -e \"/^#[ ]*undef[ ]/b\" \
2662 -e \"/^#[ ]*endif/b\" \
2664 %s | %"SVf" -C %"SVf" %s",
2665 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
2668 Perl_sv_setpvf(aTHX_ cmd, "\
2669 %s %s -e '/^[^#]/b' \
2670 -e '/^#[ ]*include[ ]/b' \
2671 -e '/^#[ ]*define[ ]/b' \
2672 -e '/^#[ ]*if[ ]/b' \
2673 -e '/^#[ ]*ifdef[ ]/b' \
2674 -e '/^#[ ]*ifndef[ ]/b' \
2675 -e '/^#[ ]*else/b' \
2676 -e '/^#[ ]*elif[ ]/b' \
2677 -e '/^#[ ]*undef[ ]/b' \
2678 -e '/^#[ ]*endif/b' \
2680 %s | %"SVf" %"SVf" %s",
2682 Perl_sv_setpvf(aTHX_ cmd, "\
2683 %s %s -e '/^[^#]/b' \
2684 -e '/^#[ ]*include[ ]/b' \
2685 -e '/^#[ ]*define[ ]/b' \
2686 -e '/^#[ ]*if[ ]/b' \
2687 -e '/^#[ ]*ifdef[ ]/b' \
2688 -e '/^#[ ]*ifndef[ ]/b' \
2689 -e '/^#[ ]*else/b' \
2690 -e '/^#[ ]*elif[ ]/b' \
2691 -e '/^#[ ]*undef[ ]/b' \
2692 -e '/^#[ ]*endif/b' \
2694 %s | %"SVf" -C %"SVf" %s",
2701 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
2703 scriptname, cpp, sv, CPPMINUS);
2704 PL_doextract = FALSE;
2705 #ifdef IAMSUID /* actually, this is caught earlier */
2706 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
2708 (void)seteuid(PL_uid); /* musn't stay setuid root */
2711 (void)setreuid((Uid_t)-1, PL_uid);
2713 #ifdef HAS_SETRESUID
2714 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
2716 PerlProc_setuid(PL_uid);
2720 if (PerlProc_geteuid() != PL_uid)
2721 Perl_croak(aTHX_ "Can't do seteuid!\n");
2723 #endif /* IAMSUID */
2724 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
2728 else if (!*scriptname) {
2729 forbid_setid("program input from stdin");
2730 PL_rsfp = PerlIO_stdin();
2733 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
2734 #if defined(HAS_FCNTL) && defined(F_SETFD)
2736 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2741 #ifndef IAMSUID /* in case script is not readable before setuid */
2743 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
2744 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2747 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
2748 (int)PERL_REVISION, (int)PERL_VERSION,
2749 (int)PERL_SUBVERSION), PL_origargv);
2750 Perl_croak(aTHX_ "Can't do setuid\n");
2756 Perl_croak(aTHX_ "Can't open perl script: %s\n",
2759 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
2760 CopFILE(PL_curcop), Strerror(errno));
2766 * I_SYSSTATVFS HAS_FSTATVFS
2768 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
2769 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2770 * here so that metaconfig picks them up. */
2774 S_fd_on_nosuid_fs(pTHX_ int fd)
2776 int check_okay = 0; /* able to do all the required sys/libcalls */
2777 int on_nosuid = 0; /* the fd is on a nosuid fs */
2779 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
2780 * fstatvfs() is UNIX98.
2781 * fstatfs() is 4.3 BSD.
2782 * ustat()+getmnt() is pre-4.3 BSD.
2783 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2784 * an irrelevant filesystem while trying to reach the right one.
2787 #undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2789 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2790 defined(HAS_FSTATVFS)
2791 # define FD_ON_NOSUID_CHECK_OKAY
2792 struct statvfs stfs;
2794 check_okay = fstatvfs(fd, &stfs) == 0;
2795 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
2796 # endif /* fstatvfs */
2798 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2799 defined(PERL_MOUNT_NOSUID) && \
2800 defined(HAS_FSTATFS) && \
2801 defined(HAS_STRUCT_STATFS) && \
2802 defined(HAS_STRUCT_STATFS_F_FLAGS)
2803 # define FD_ON_NOSUID_CHECK_OKAY
2806 check_okay = fstatfs(fd, &stfs) == 0;
2807 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
2808 # endif /* fstatfs */
2810 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2811 defined(PERL_MOUNT_NOSUID) && \
2812 defined(HAS_FSTAT) && \
2813 defined(HAS_USTAT) && \
2814 defined(HAS_GETMNT) && \
2815 defined(HAS_STRUCT_FS_DATA) && \
2817 # define FD_ON_NOSUID_CHECK_OKAY
2820 if (fstat(fd, &fdst) == 0) {
2822 if (ustat(fdst.st_dev, &us) == 0) {
2824 /* NOSTAT_ONE here because we're not examining fields which
2825 * vary between that case and STAT_ONE. */
2826 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
2827 size_t cmplen = sizeof(us.f_fname);
2828 if (sizeof(fsd.fd_req.path) < cmplen)
2829 cmplen = sizeof(fsd.fd_req.path);
2830 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2831 fdst.st_dev == fsd.fd_req.dev) {
2833 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2839 # endif /* fstat+ustat+getmnt */
2841 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2842 defined(HAS_GETMNTENT) && \
2843 defined(HAS_HASMNTOPT) && \
2844 defined(MNTOPT_NOSUID)
2845 # define FD_ON_NOSUID_CHECK_OKAY
2846 FILE *mtab = fopen("/etc/mtab", "r");
2847 struct mntent *entry;
2848 struct stat stb, fsb;
2850 if (mtab && (fstat(fd, &stb) == 0)) {
2851 while (entry = getmntent(mtab)) {
2852 if (stat(entry->mnt_dir, &fsb) == 0
2853 && fsb.st_dev == stb.st_dev)
2855 /* found the filesystem */
2857 if (hasmntopt(entry, MNTOPT_NOSUID))
2860 } /* A single fs may well fail its stat(). */
2865 # endif /* getmntent+hasmntopt */
2868 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
2871 #endif /* IAMSUID */
2874 S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
2880 /* do we need to emulate setuid on scripts? */
2882 /* This code is for those BSD systems that have setuid #! scripts disabled
2883 * in the kernel because of a security problem. Merely defining DOSUID
2884 * in perl will not fix that problem, but if you have disabled setuid
2885 * scripts in the kernel, this will attempt to emulate setuid and setgid
2886 * on scripts that have those now-otherwise-useless bits set. The setuid
2887 * root version must be called suidperl or sperlN.NNN. If regular perl
2888 * discovers that it has opened a setuid script, it calls suidperl with
2889 * the same argv that it had. If suidperl finds that the script it has
2890 * just opened is NOT setuid root, it sets the effective uid back to the
2891 * uid. We don't just make perl setuid root because that loses the
2892 * effective uid we had before invoking perl, if it was different from the
2895 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2896 * be defined in suidperl only. suidperl must be setuid root. The
2897 * Configure script will set this up for you if you want it.
2903 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
2904 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
2905 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
2910 #ifndef HAS_SETREUID
2911 /* On this access check to make sure the directories are readable,
2912 * there is actually a small window that the user could use to make
2913 * filename point to an accessible directory. So there is a faint
2914 * chance that someone could execute a setuid script down in a
2915 * non-accessible directory. I don't know what to do about that.
2916 * But I don't think it's too important. The manual lies when
2917 * it says access() is useful in setuid programs.
2919 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
2920 Perl_croak(aTHX_ "Permission denied");
2922 /* If we can swap euid and uid, then we can determine access rights
2923 * with a simple stat of the file, and then compare device and
2924 * inode to make sure we did stat() on the same file we opened.
2925 * Then we just have to make sure he or she can execute it.
2928 struct stat tmpstatbuf;
2932 setreuid(PL_euid,PL_uid) < 0
2935 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
2938 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
2939 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
2940 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
2941 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
2942 #if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
2943 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
2944 Perl_croak(aTHX_ "Permission denied");
2946 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
2947 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
2948 (void)PerlIO_close(PL_rsfp);
2949 Perl_croak(aTHX_ "Permission denied\n");
2953 setreuid(PL_uid,PL_euid) < 0
2955 # if defined(HAS_SETRESUID)
2956 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
2959 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
2960 Perl_croak(aTHX_ "Can't reswap uid and euid");
2961 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
2962 Perl_croak(aTHX_ "Permission denied\n");
2964 #endif /* HAS_SETREUID */
2965 #endif /* IAMSUID */
2967 if (!S_ISREG(PL_statbuf.st_mode))
2968 Perl_croak(aTHX_ "Permission denied");
2969 if (PL_statbuf.st_mode & S_IWOTH)
2970 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
2971 PL_doswitches = FALSE; /* -s is insecure in suid */
2972 CopLINE_inc(PL_curcop);
2973 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
2974 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
2975 Perl_croak(aTHX_ "No #! line");
2976 s = SvPV(PL_linestr,n_a)+2;
2978 while (!isSPACE(*s)) s++;
2979 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
2980 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
2981 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
2982 Perl_croak(aTHX_ "Not a perl script");
2983 while (*s == ' ' || *s == '\t') s++;
2985 * #! arg must be what we saw above. They can invoke it by
2986 * mentioning suidperl explicitly, but they may not add any strange
2987 * arguments beyond what #! says if they do invoke suidperl that way.
2989 len = strlen(validarg);
2990 if (strEQ(validarg," PHOOEY ") ||
2991 strnNE(s,validarg,len) || !isSPACE(s[len]))
2992 Perl_croak(aTHX_ "Args must match #! line");
2995 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
2996 PL_euid == PL_statbuf.st_uid)
2998 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
2999 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3000 #endif /* IAMSUID */
3002 if (PL_euid) { /* oops, we're not the setuid root perl */
3003 (void)PerlIO_close(PL_rsfp);
3006 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
3007 (int)PERL_REVISION, (int)PERL_VERSION,
3008 (int)PERL_SUBVERSION), PL_origargv);
3010 Perl_croak(aTHX_ "Can't do setuid\n");
3013 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
3015 (void)setegid(PL_statbuf.st_gid);
3018 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
3020 #ifdef HAS_SETRESGID
3021 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
3023 PerlProc_setgid(PL_statbuf.st_gid);
3027 if (PerlProc_getegid() != PL_statbuf.st_gid)
3028 Perl_croak(aTHX_ "Can't do setegid!\n");
3030 if (PL_statbuf.st_mode & S_ISUID) {
3031 if (PL_statbuf.st_uid != PL_euid)
3033 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
3036 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
3038 #ifdef HAS_SETRESUID
3039 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
3041 PerlProc_setuid(PL_statbuf.st_uid);
3045 if (PerlProc_geteuid() != PL_statbuf.st_uid)
3046 Perl_croak(aTHX_ "Can't do seteuid!\n");
3048 else if (PL_uid) { /* oops, mustn't run as root */
3050 (void)seteuid((Uid_t)PL_uid);
3053 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
3055 #ifdef HAS_SETRESUID
3056 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
3058 PerlProc_setuid((Uid_t)PL_uid);
3062 if (PerlProc_geteuid() != PL_uid)
3063 Perl_croak(aTHX_ "Can't do seteuid!\n");
3066 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
3067 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
3070 else if (PL_preprocess)
3071 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
3072 else if (fdscript >= 0)
3073 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
3075 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
3077 /* We absolutely must clear out any saved ids here, so we */
3078 /* exec the real perl, substituting fd script for scriptname. */
3079 /* (We pass script name as "subdir" of fd, which perl will grok.) */
3080 PerlIO_rewind(PL_rsfp);
3081 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
3082 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3083 if (!PL_origargv[which])
3084 Perl_croak(aTHX_ "Permission denied");
3085 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
3086 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
3087 #if defined(HAS_FCNTL) && defined(F_SETFD)
3088 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
3090 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
3091 (int)PERL_REVISION, (int)PERL_VERSION,
3092 (int)PERL_SUBVERSION), PL_origargv);/* try again */
3093 Perl_croak(aTHX_ "Can't do setuid\n");
3094 #endif /* IAMSUID */
3096 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
3097 #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
3098 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3099 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3101 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3104 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3105 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3106 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3107 /* not set-id, must be wrapped */
3113 S_find_beginning(pTHX)
3115 register char *s, *s2;
3117 /* skip forward in input to the real script? */
3120 #ifdef MACOS_TRADITIONAL
3121 /* Since the Mac OS does not honor #! arguments for us, we do it ourselves */
3123 while (PL_doextract || gMacPerl_AlwaysExtract) {
3124 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3125 if (!gMacPerl_AlwaysExtract)
3126 Perl_croak(aTHX_ "No Perl script found in input\n");
3128 if (PL_doextract) /* require explicit override ? */
3129 if (!OverrideExtract(PL_origfilename))
3130 Perl_croak(aTHX_ "User aborted script\n");
3132 PL_doextract = FALSE;
3134 /* Pater peccavi, file does not have #! */
3135 PerlIO_rewind(PL_rsfp);
3140 while (PL_doextract) {
3141 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
3142 Perl_croak(aTHX_ "No Perl script found in input\n");
3145 if (*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))) {
3146 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3147 PL_doextract = FALSE;
3148 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3150 while (*s == ' ' || *s == '\t') s++;
3152 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3153 if (strnEQ(s2-4,"perl",4))
3155 while ((s = moreswitches(s)))
3158 #ifdef MACOS_TRADITIONAL
3169 PL_uid = PerlProc_getuid();
3170 PL_euid = PerlProc_geteuid();
3171 PL_gid = PerlProc_getgid();
3172 PL_egid = PerlProc_getegid();
3174 PL_uid |= PL_gid << 16;
3175 PL_euid |= PL_egid << 16;
3177 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3181 S_forbid_setid(pTHX_ char *s)
3183 if (PL_euid != PL_uid)
3184 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3185 if (PL_egid != PL_gid)
3186 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
3190 Perl_init_debugger(pTHX)
3192 HV *ostash = PL_curstash;
3194 PL_curstash = PL_debstash;
3195 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3196 AvREAL_off(PL_dbargs);
3197 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3198 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3199 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
3200 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3201 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
3202 sv_setiv(PL_DBsingle, 0);
3203 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
3204 sv_setiv(PL_DBtrace, 0);
3205 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
3206 sv_setiv(PL_DBsignal, 0);
3207 PL_curstash = ostash;
3210 #ifndef STRESS_REALLOC
3211 #define REASONABLE(size) (size)
3213 #define REASONABLE(size) (1) /* unreasonable */
3217 Perl_init_stacks(pTHX)
3219 /* start with 128-item stack and 8K cxstack */
3220 PL_curstackinfo = new_stackinfo(REASONABLE(128),
3221 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3222 PL_curstackinfo->si_type = PERLSI_MAIN;
3223 PL_curstack = PL_curstackinfo->si_stack;
3224 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
3226 PL_stack_base = AvARRAY(PL_curstack);
3227 PL_stack_sp = PL_stack_base;
3228 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
3230 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3233 PL_tmps_max = REASONABLE(128);
3235 New(54,PL_markstack,REASONABLE(32),I32);
3236 PL_markstack_ptr = PL_markstack;
3237 PL_markstack_max = PL_markstack + REASONABLE(32);
3241 New(54,PL_scopestack,REASONABLE(32),I32);
3242 PL_scopestack_ix = 0;
3243 PL_scopestack_max = REASONABLE(32);
3245 New(54,PL_savestack,REASONABLE(128),ANY);
3246 PL_savestack_ix = 0;
3247 PL_savestack_max = REASONABLE(128);
3249 New(54,PL_retstack,REASONABLE(16),OP*);
3251 PL_retstack_max = REASONABLE(16);
3259 while (PL_curstackinfo->si_next)
3260 PL_curstackinfo = PL_curstackinfo->si_next;
3261 while (PL_curstackinfo) {
3262 PERL_SI *p = PL_curstackinfo->si_prev;
3263 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3264 Safefree(PL_curstackinfo->si_cxstack);
3265 Safefree(PL_curstackinfo);
3266 PL_curstackinfo = p;
3268 Safefree(PL_tmps_stack);
3269 Safefree(PL_markstack);
3270 Safefree(PL_scopestack);
3271 Safefree(PL_savestack);
3272 Safefree(PL_retstack);
3276 static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */
3287 lex_start(PL_linestr);
3289 PL_subname = newSVpvn("main",4);
3293 S_init_predump_symbols(pTHX)
3298 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3299 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3300 GvMULTI_on(PL_stdingv);
3301 io = GvIOp(PL_stdingv);
3302 IoTYPE(io) = IoTYPE_RDONLY;
3303 IoIFP(io) = PerlIO_stdin();
3304 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
3306 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3308 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
3311 IoTYPE(io) = IoTYPE_WRONLY;
3312 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
3314 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
3316 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3318 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3319 GvMULTI_on(PL_stderrgv);
3320 io = GvIOp(PL_stderrgv);
3321 IoTYPE(io) = IoTYPE_WRONLY;
3322 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
3323 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
3325 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3327 PL_statname = NEWSV(66,0); /* last filename we did stat on */
3330 Safefree(PL_osname);
3331 PL_osname = savepv(OSNAME);
3335 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
3340 #ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3341 char **dup_env_base = 0;
3342 int dup_env_count = 0;
3345 argc--,argv++; /* skip name of script */
3346 if (PL_doswitches) {
3347 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3350 if (argv[0][1] == '-' && !argv[0][2]) {
3354 if ((s = strchr(argv[0], '='))) {
3356 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
3359 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
3362 PL_toptarget = NEWSV(0,0);
3363 sv_upgrade(PL_toptarget, SVt_PVFM);
3364 sv_setpvn(PL_toptarget, "", 0);
3365 PL_bodytarget = NEWSV(0,0);
3366 sv_upgrade(PL_bodytarget, SVt_PVFM);
3367 sv_setpvn(PL_bodytarget, "", 0);
3368 PL_formtarget = PL_bodytarget;
3371 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
3372 #ifdef MACOS_TRADITIONAL
3373 /* $0 is not majick on a Mac */
3374 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3376 sv_setpv(GvSV(tmpgv),PL_origfilename);
3377 magicname("0", "0", 1);
3380 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV)))
3382 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
3384 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
3386 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3387 GvMULTI_on(PL_argvgv);
3388 (void)gv_AVadd(PL_argvgv);
3389 av_clear(GvAVn(PL_argvgv));
3390 for (; argc > 0; argc--,argv++) {
3391 SV *sv = newSVpv(argv[0],0);
3392 av_push(GvAVn(PL_argvgv),sv);
3393 if (PL_widesyscalls)
3394 (void)sv_utf8_decode(sv);
3397 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
3399 GvMULTI_on(PL_envgv);
3400 hv = GvHVn(PL_envgv);
3401 hv_magic(hv, Nullgv, PERL_MAGIC_env);
3402 #ifdef USE_ENVIRON_ARRAY
3403 /* Note that if the supplied env parameter is actually a copy
3404 of the global environ then it may now point to free'd memory
3405 if the environment has been modified since. To avoid this
3406 problem we treat env==NULL as meaning 'use the default'
3411 environ[0] = Nullch;
3412 #ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3415 for (env_base = env; *env; env++)
3417 if ((dup_env_base = (char **)
3418 safesysmalloc( sizeof(char *) * (dup_env_count+1) ))) {
3420 for (env = env_base, dup_env = dup_env_base;
3423 /* With environ one needs to use safesysmalloc(). */
3424 *dup_env = safesysmalloc(strlen(*env) + 1);
3425 (void)strcpy(*dup_env, *env);
3431 #endif /* NEED_ENVIRON_DUP_FOR_MODIFY */
3432 for (; *env; env++) {
3433 if (!(s = strchr(*env,'=')))
3439 sv = newSVpv(s--,0);
3440 (void)hv_store(hv, *env, s - *env, sv, 0);
3443 #ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3446 for (dup_env = dup_env_base; *dup_env; dup_env++)
3447 safesysfree(*dup_env);
3448 safesysfree(dup_env_base);
3450 #endif /* NEED_ENVIRON_DUP_FOR_MODIFY */
3451 #endif /* USE_ENVIRON_ARRAY */
3454 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
3455 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
3459 S_init_perllib(pTHX)
3464 s = PerlEnv_getenv("PERL5LIB");
3466 incpush(s, TRUE, TRUE);
3468 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE);
3470 /* Treat PERL5?LIB as a possible search list logical name -- the
3471 * "natural" VMS idiom for a Unix path string. We allow each
3472 * element to be a set of |-separated directories for compatibility.
3476 if (my_trnlnm("PERL5LIB",buf,0))
3477 do { incpush(buf,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
3479 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE);
3483 /* Use the ~-expanded versions of APPLLIB (undocumented),
3484 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
3487 incpush(APPLLIB_EXP, TRUE, TRUE);
3491 incpush(ARCHLIB_EXP, FALSE, FALSE);
3493 #ifdef MACOS_TRADITIONAL
3495 struct stat tmpstatbuf;
3496 SV * privdir = NEWSV(55, 0);
3497 char * macperl = PerlEnv_getenv("MACPERL");
3502 Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl);
3503 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3504 incpush(SvPVX(privdir), TRUE, FALSE);
3505 Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl);
3506 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3507 incpush(SvPVX(privdir), TRUE, FALSE);
3509 SvREFCNT_dec(privdir);
3512 incpush(":", FALSE, FALSE);
3515 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
3518 incpush(PRIVLIB_EXP, TRUE, FALSE);
3520 incpush(PRIVLIB_EXP, FALSE, FALSE);
3524 /* sitearch is always relative to sitelib on Windows for
3525 * DLL-based path intuition to work correctly */
3526 # if !defined(WIN32)
3527 incpush(SITEARCH_EXP, FALSE, FALSE);
3533 incpush(SITELIB_EXP, TRUE, FALSE); /* this picks up sitearch as well */
3535 incpush(SITELIB_EXP, FALSE, FALSE);
3539 #ifdef SITELIB_STEM /* Search for version-specific dirs below here */
3540 incpush(SITELIB_STEM, FALSE, TRUE);
3543 #ifdef PERL_VENDORARCH_EXP
3544 /* vendorarch is always relative to vendorlib on Windows for
3545 * DLL-based path intuition to work correctly */
3546 # if !defined(WIN32)
3547 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE);
3551 #ifdef PERL_VENDORLIB_EXP
3553 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE); /* this picks up vendorarch as well */
3555 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE);
3559 #ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
3560 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE);
3563 #ifdef PERL_OTHERLIBDIRS
3564 incpush(PERL_OTHERLIBDIRS, TRUE, TRUE);
3568 incpush(".", FALSE, FALSE);
3569 #endif /* MACOS_TRADITIONAL */
3572 #if defined(DOSISH) || defined(EPOC)
3573 # define PERLLIB_SEP ';'
3576 # define PERLLIB_SEP '|'
3578 # if defined(MACOS_TRADITIONAL)
3579 # define PERLLIB_SEP ','
3581 # define PERLLIB_SEP ':'
3585 #ifndef PERLLIB_MANGLE
3586 # define PERLLIB_MANGLE(s,n) (s)
3590 S_incpush(pTHX_ char *p, int addsubdirs, int addoldvers)
3592 SV *subdir = Nullsv;
3597 if (addsubdirs || addoldvers) {
3598 subdir = sv_newmortal();
3601 /* Break at all separators */
3603 SV *libdir = NEWSV(55,0);
3606 /* skip any consecutive separators */
3607 while ( *p == PERLLIB_SEP ) {
3608 /* Uncomment the next line for PATH semantics */
3609 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
3613 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
3614 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
3619 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
3620 p = Nullch; /* break out */
3622 #ifdef MACOS_TRADITIONAL
3623 if (!strchr(SvPVX(libdir), ':'))
3624 sv_insert(libdir, 0, 0, ":", 1);
3625 if (SvPVX(libdir)[SvCUR(libdir)-1] != ':')
3626 sv_catpv(libdir, ":");
3630 * BEFORE pushing libdir onto @INC we may first push version- and
3631 * archname-specific sub-directories.
3633 if (addsubdirs || addoldvers) {
3634 #ifdef PERL_INC_VERSION_LIST
3635 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
3636 const char *incverlist[] = { PERL_INC_VERSION_LIST };
3637 const char **incver;
3639 struct stat tmpstatbuf;
3644 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
3646 while (unix[len-1] == '/') len--; /* Cosmetic */
3647 sv_usepvn(libdir,unix,len);
3650 PerlIO_printf(Perl_error_log,
3651 "Failed to unixify @INC element \"%s\"\n",
3655 #ifdef MACOS_TRADITIONAL
3656 #define PERL_AV_SUFFIX_FMT ""
3657 #define PERL_ARCH_FMT "%s:"
3658 #define PERL_ARCH_FMT_PATH PERL_FS_VER_FMT PERL_AV_SUFFIX_FMT
3660 #define PERL_AV_SUFFIX_FMT "/"
3661 #define PERL_ARCH_FMT "/%s"
3662 #define PERL_ARCH_FMT_PATH PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT
3664 /* .../version/archname if -d .../version/archname */
3665 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH PERL_ARCH_FMT,
3667 (int)PERL_REVISION, (int)PERL_VERSION,
3668 (int)PERL_SUBVERSION, ARCHNAME);
3669 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3670 S_ISDIR(tmpstatbuf.st_mode))
3671 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3673 /* .../version if -d .../version */
3674 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH, libdir,
3675 (int)PERL_REVISION, (int)PERL_VERSION,
3676 (int)PERL_SUBVERSION);
3677 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3678 S_ISDIR(tmpstatbuf.st_mode))
3679 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3681 /* .../archname if -d .../archname */
3682 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, ARCHNAME);
3683 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3684 S_ISDIR(tmpstatbuf.st_mode))
3685 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3688 #ifdef PERL_INC_VERSION_LIST
3690 for (incver = incverlist; *incver; incver++) {
3691 /* .../xxx if -d .../xxx */
3692 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, *incver);
3693 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3694 S_ISDIR(tmpstatbuf.st_mode))
3695 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3701 /* finally push this lib directory on the end of @INC */
3702 av_push(GvAVn(PL_incgv), libdir);
3707 STATIC struct perl_thread *
3708 S_init_main_thread(pTHX)
3710 #if !defined(PERL_IMPLICIT_CONTEXT)
3711 struct perl_thread *thr;
3715 Newz(53, thr, 1, struct perl_thread);
3716 PL_curcop = &PL_compiling;
3717 thr->interp = PERL_GET_INTERP;
3718 thr->cvcache = newHV();
3719 thr->threadsv = newAV();
3720 /* thr->threadsvp is set when find_threadsv is called */
3721 thr->specific = newAV();
3722 thr->flags = THRf_R_JOINABLE;
3723 MUTEX_INIT(&thr->mutex);
3724 /* Handcraft thrsv similarly to mess_sv */
3725 New(53, PL_thrsv, 1, SV);
3726 Newz(53, xpv, 1, XPV);
3727 SvFLAGS(PL_thrsv) = SVt_PV;
3728 SvANY(PL_thrsv) = (void*)xpv;
3729 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
3730 SvPVX(PL_thrsv) = (char*)thr;
3731 SvCUR_set(PL_thrsv, sizeof(thr));
3732 SvLEN_set(PL_thrsv, sizeof(thr));
3733 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
3734 thr->oursv = PL_thrsv;
3735 PL_chopset = " \n-";
3738 MUTEX_LOCK(&PL_threads_mutex);
3744 MUTEX_UNLOCK(&PL_threads_mutex);
3746 #ifdef HAVE_THREAD_INTERN
3747 Perl_init_thread_intern(thr);
3750 #ifdef SET_THREAD_SELF
3751 SET_THREAD_SELF(thr);
3753 thr->self = pthread_self();
3754 #endif /* SET_THREAD_SELF */
3758 * These must come after the thread self setting
3759 * because sv_setpvn does SvTAINT and the taint
3760 * fields thread selfness being set.
3762 PL_toptarget = NEWSV(0,0);
3763 sv_upgrade(PL_toptarget, SVt_PVFM);
3764 sv_setpvn(PL_toptarget, "", 0);
3765 PL_bodytarget = NEWSV(0,0);
3766 sv_upgrade(PL_bodytarget, SVt_PVFM);
3767 sv_setpvn(PL_bodytarget, "", 0);
3768 PL_formtarget = PL_bodytarget;
3769 thr->errsv = newSVpvn("", 0);
3770 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
3773 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3774 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3775 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3776 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3777 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
3779 PL_reginterp_cnt = 0;
3783 #endif /* USE_THREADS */
3786 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
3789 line_t oldline = CopLINE(PL_curcop);
3795 while (AvFILL(paramList) >= 0) {
3796 cv = (CV*)av_shift(paramList);
3797 if ((PL_minus_c & 0x10) && (paramList == PL_beginav)) {
3798 /* save PL_beginav for compiler */
3799 if (! PL_beginav_save)
3800 PL_beginav_save = newAV();
3801 av_push(PL_beginav_save, (SV*)cv);
3805 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3806 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_list_body), cv);
3812 #ifndef PERL_FLEXIBLE_EXCEPTIONS
3816 (void)SvPV(atsv, len);
3819 PL_curcop = &PL_compiling;
3820 CopLINE_set(PL_curcop, oldline);
3821 if (paramList == PL_beginav)
3822 sv_catpv(atsv, "BEGIN failed--compilation aborted");
3824 Perl_sv_catpvf(aTHX_ atsv,
3825 "%s failed--call queue aborted",
3826 paramList == PL_checkav ? "CHECK"
3827 : paramList == PL_initav ? "INIT"
3829 while (PL_scopestack_ix > oldscope)
3832 Perl_croak(aTHX_ "%s", SvPVx(atsv, n_a));
3839 /* my_exit() was called */
3840 while (PL_scopestack_ix > oldscope)
3843 PL_curstash = PL_defstash;
3844 PL_curcop = &PL_compiling;
3845 CopLINE_set(PL_curcop, oldline);
3847 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
3848 if (paramList == PL_beginav)
3849 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
3851 Perl_croak(aTHX_ "%s failed--call queue aborted",
3852 paramList == PL_checkav ? "CHECK"
3853 : paramList == PL_initav ? "INIT"
3860 PL_curcop = &PL_compiling;
3861 CopLINE_set(PL_curcop, oldline);
3864 PerlIO_printf(Perl_error_log, "panic: restartop\n");
3872 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3874 S_vcall_list_body(pTHX_ va_list args)
3876 CV *cv = va_arg(args, CV*);
3877 return call_list_body(cv);
3882 S_call_list_body(pTHX_ CV *cv)
3884 PUSHMARK(PL_stack_sp);
3885 call_sv((SV*)cv, G_EVAL|G_DISCARD);
3890 Perl_my_exit(pTHX_ U32 status)
3892 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
3893 thr, (unsigned long) status));
3902 STATUS_NATIVE_SET(status);
3909 Perl_my_failure_exit(pTHX)
3912 if (vaxc$errno & 1) {
3913 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
3914 STATUS_NATIVE_SET(44);
3917 if (!vaxc$errno && errno) /* unlikely */
3918 STATUS_NATIVE_SET(44);
3920 STATUS_NATIVE_SET(vaxc$errno);
3925 STATUS_POSIX_SET(errno);
3927 exitstatus = STATUS_POSIX >> 8;
3928 if (exitstatus & 255)
3929 STATUS_POSIX_SET(exitstatus);
3931 STATUS_POSIX_SET(255);
3938 S_my_exit_jump(pTHX)
3940 register PERL_CONTEXT *cx;
3945 SvREFCNT_dec(PL_e_script);
3946 PL_e_script = Nullsv;
3949 POPSTACK_TO(PL_mainstack);
3950 if (cxstack_ix >= 0) {
3953 POPBLOCK(cx,PL_curpm);
3965 read_e_script(pTHXo_ int idx, SV *buf_sv, int maxlen)
3968 p = SvPVX(PL_e_script);
3969 nl = strchr(p, '\n');
3970 nl = (nl) ? nl+1 : SvEND(PL_e_script);
3972 filter_del(read_e_script);
3975 sv_catpvn(buf_sv, p, nl-p);
3976 sv_chop(PL_e_script, nl);