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; \
1156 print \" \\%ENV:\\n @env\\n\" if @env; \
1157 print \" \\@INC:\\n @INC\\n\";");
1160 PL_Sv = newSVpv("config_vars(qw(",0);
1161 sv_catpv(PL_Sv, ++s);
1162 sv_catpv(PL_Sv, "))");
1165 av_push(PL_preambleav, PL_Sv);
1166 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1169 PL_doextract = TRUE;
1177 if (!*++s || isSPACE(*s)) {
1181 /* catch use of gnu style long options */
1182 if (strEQ(s, "version")) {
1186 if (strEQ(s, "help")) {
1193 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1199 #ifndef SECURE_INTERNAL_GETENV
1202 (popts = PerlEnv_getenv("PERL5OPT")))
1207 if (*s == '-' && *(s+1) == 'T')
1222 if (!strchr("DIMUdmw", *s))
1223 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
1236 scriptname = argv[0];
1239 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1241 else if (scriptname == Nullch) {
1243 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1251 open_script(scriptname,dosearch,sv,&fdscript);
1253 validate_suid(validarg, scriptname,fdscript);
1256 #if defined(SIGCHLD) || defined(SIGCLD)
1259 # define SIGCHLD SIGCLD
1261 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1262 if (sigstate == SIG_IGN) {
1263 if (ckWARN(WARN_SIGNAL))
1264 Perl_warner(aTHX_ WARN_SIGNAL,
1265 "Can't ignore signal CHLD, forcing to default");
1266 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1272 #ifdef MACOS_TRADITIONAL
1273 if (PL_doextract || gMacPerl_AlwaysExtract) {
1278 if (cddir && PerlDir_chdir(cddir) < 0)
1279 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1283 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1284 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1285 CvUNIQUE_on(PL_compcv);
1287 PL_comppad = newAV();
1288 av_push(PL_comppad, Nullsv);
1289 PL_curpad = AvARRAY(PL_comppad);
1290 PL_comppad_name = newAV();
1291 PL_comppad_name_fill = 0;
1292 PL_min_intro_pending = 0;
1295 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
1296 PL_curpad[0] = (SV*)newAV();
1297 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1298 CvOWNER(PL_compcv) = 0;
1299 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1300 MUTEX_INIT(CvMUTEXP(PL_compcv));
1301 #endif /* USE_THREADS */
1303 comppadlist = newAV();
1304 AvREAL_off(comppadlist);
1305 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1306 av_store(comppadlist, 1, (SV*)PL_comppad);
1307 CvPADLIST(PL_compcv) = comppadlist;
1310 boot_core_UNIVERSAL();
1312 boot_core_xsutils();
1316 (*xsinit)(aTHXo); /* in case linked C routines want magical variables */
1318 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
1324 # ifdef HAS_SOCKS5_INIT
1325 socks5_init(argv[0]);
1331 init_predump_symbols();
1332 /* init_postdump_symbols not currently designed to be called */
1333 /* more than once (ENV isn't cleared first, for example) */
1334 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
1336 init_postdump_symbols(argc,argv,env);
1340 /* now parse the script */
1342 SETERRNO(0,SS$_NORMAL);
1344 #ifdef MACOS_TRADITIONAL
1345 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1347 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1349 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1350 MacPerl_MPWFileName(PL_origfilename));
1354 if (yyparse() || PL_error_count) {
1356 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
1358 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1363 CopLINE_set(PL_curcop, 0);
1364 PL_curstash = PL_defstash;
1365 PL_preprocess = FALSE;
1367 SvREFCNT_dec(PL_e_script);
1368 PL_e_script = Nullsv;
1371 /* now that script is parsed, we can modify record separator */
1372 SvREFCNT_dec(PL_rs);
1373 PL_rs = SvREFCNT_inc(PL_nrs);
1374 sv_setsv(get_sv("/", TRUE), PL_rs);
1379 SAVECOPFILE(PL_curcop);
1380 SAVECOPLINE(PL_curcop);
1381 gv_check(PL_defstash);
1388 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1389 dump_mstats("after compilation:");
1398 =for apidoc perl_run
1400 Tells a Perl interpreter to run. See L<perlembed>.
1415 oldscope = PL_scopestack_ix;
1417 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1419 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1425 cxstack_ix = -1; /* start context stack again */
1427 case 0: /* normal completion */
1428 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1433 case 2: /* my_exit() */
1434 while (PL_scopestack_ix > oldscope)
1437 PL_curstash = PL_defstash;
1438 if (PL_endav && !PL_minus_c)
1439 call_list(oldscope, PL_endav);
1441 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1442 dump_mstats("after execution: ");
1444 ret = STATUS_NATIVE_EXPORT;
1448 POPSTACK_TO(PL_mainstack);
1451 PerlIO_printf(Perl_error_log, "panic: restartop\n");
1461 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1463 S_vrun_body(pTHX_ va_list args)
1465 I32 oldscope = va_arg(args, I32);
1467 return run_body(oldscope);
1473 S_run_body(pTHX_ I32 oldscope)
1475 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
1476 PL_sawampersand ? "Enabling" : "Omitting"));
1478 if (!PL_restartop) {
1479 DEBUG_x(dump_all());
1480 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
1481 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1485 #ifdef MACOS_TRADITIONAL
1486 PerlIO_printf(Perl_error_log, "%s syntax OK\n", MacPerl_MPWFileName(PL_origfilename));
1488 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
1492 if (PERLDB_SINGLE && PL_DBsingle)
1493 sv_setiv(PL_DBsingle, 1);
1495 call_list(oldscope, PL_initav);
1501 PL_op = PL_restartop;
1505 else if (PL_main_start) {
1506 CvDEPTH(PL_main_cv) = 1;
1507 PL_op = PL_main_start;
1517 =for apidoc p||get_sv
1519 Returns the SV of the specified Perl scalar. If C<create> is set and the
1520 Perl variable does not exist then it will be created. If C<create> is not
1521 set and the variable does not exist then NULL is returned.
1527 Perl_get_sv(pTHX_ const char *name, I32 create)
1531 if (name[1] == '\0' && !isALPHA(name[0])) {
1532 PADOFFSET tmp = find_threadsv(name);
1533 if (tmp != NOT_IN_PAD)
1534 return THREADSV(tmp);
1536 #endif /* USE_THREADS */
1537 gv = gv_fetchpv(name, create, SVt_PV);
1544 =for apidoc p||get_av
1546 Returns the AV of the specified Perl array. If C<create> is set and the
1547 Perl variable does not exist then it will be created. If C<create> is not
1548 set and the variable does not exist then NULL is returned.
1554 Perl_get_av(pTHX_ const char *name, I32 create)
1556 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1565 =for apidoc p||get_hv
1567 Returns the HV of the specified Perl hash. If C<create> is set and the
1568 Perl variable does not exist then it will be created. If C<create> is not
1569 set and the variable does not exist then NULL is returned.
1575 Perl_get_hv(pTHX_ const char *name, I32 create)
1577 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1586 =for apidoc p||get_cv
1588 Returns the CV of the specified Perl subroutine. If C<create> is set and
1589 the Perl subroutine does not exist then it will be declared (which has the
1590 same effect as saying C<sub name;>). If C<create> is not set and the
1591 subroutine does not exist then NULL is returned.
1597 Perl_get_cv(pTHX_ const char *name, I32 create)
1599 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
1600 /* XXX unsafe for threads if eval_owner isn't held */
1601 /* XXX this is probably not what they think they're getting.
1602 * It has the same effect as "sub name;", i.e. just a forward
1604 if (create && !GvCVu(gv))
1605 return newSUB(start_subparse(FALSE, 0),
1606 newSVOP(OP_CONST, 0, newSVpv(name,0)),
1614 /* Be sure to refetch the stack pointer after calling these routines. */
1617 =for apidoc p||call_argv
1619 Performs a callback to the specified Perl sub. See L<perlcall>.
1625 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
1627 /* See G_* flags in cop.h */
1628 /* null terminated arg list */
1635 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
1640 return call_pv(sub_name, flags);
1644 =for apidoc p||call_pv
1646 Performs a callback to the specified Perl sub. See L<perlcall>.
1652 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
1653 /* name of the subroutine */
1654 /* See G_* flags in cop.h */
1656 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
1660 =for apidoc p||call_method
1662 Performs a callback to the specified Perl method. The blessed object must
1663 be on the stack. See L<perlcall>.
1669 Perl_call_method(pTHX_ const char *methname, I32 flags)
1670 /* name of the subroutine */
1671 /* See G_* flags in cop.h */
1673 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
1676 /* May be called with any of a CV, a GV, or an SV containing the name. */
1678 =for apidoc p||call_sv
1680 Performs a callback to the Perl sub whose name is in the SV. See
1687 Perl_call_sv(pTHX_ SV *sv, I32 flags)
1688 /* See G_* flags in cop.h */
1691 LOGOP myop; /* fake syntax tree node */
1694 volatile I32 retval = 0;
1696 bool oldcatch = CATCH_GET;
1701 if (flags & G_DISCARD) {
1706 Zero(&myop, 1, LOGOP);
1707 myop.op_next = Nullop;
1708 if (!(flags & G_NOARGS))
1709 myop.op_flags |= OPf_STACKED;
1710 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1711 (flags & G_ARRAY) ? OPf_WANT_LIST :
1716 EXTEND(PL_stack_sp, 1);
1717 *++PL_stack_sp = sv;
1719 oldscope = PL_scopestack_ix;
1721 if (PERLDB_SUB && PL_curstash != PL_debstash
1722 /* Handle first BEGIN of -d. */
1723 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
1724 /* Try harder, since this may have been a sighandler, thus
1725 * curstash may be meaningless. */
1726 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
1727 && !(flags & G_NODEBUG))
1728 PL_op->op_private |= OPpENTERSUB_DB;
1730 if (flags & G_METHOD) {
1731 Zero(&method_op, 1, UNOP);
1732 method_op.op_next = PL_op;
1733 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1734 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
1735 PL_op = (OP*)&method_op;
1738 if (!(flags & G_EVAL)) {
1740 call_body((OP*)&myop, FALSE);
1741 retval = PL_stack_sp - (PL_stack_base + oldmark);
1742 CATCH_SET(oldcatch);
1745 myop.op_other = (OP*)&myop;
1747 /* we're trying to emulate pp_entertry() here */
1749 register PERL_CONTEXT *cx;
1750 I32 gimme = GIMME_V;
1755 push_return(Nullop);
1756 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
1758 PL_eval_root = PL_op; /* Only needed so that goto works right. */
1760 PL_in_eval = EVAL_INEVAL;
1761 if (flags & G_KEEPERR)
1762 PL_in_eval |= EVAL_KEEPERR;
1768 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1770 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1777 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1779 call_body((OP*)&myop, FALSE);
1781 retval = PL_stack_sp - (PL_stack_base + oldmark);
1782 if (!(flags & G_KEEPERR))
1789 /* my_exit() was called */
1790 PL_curstash = PL_defstash;
1793 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1794 Perl_croak(aTHX_ "Callback called exit");
1799 PL_op = PL_restartop;
1803 PL_stack_sp = PL_stack_base + oldmark;
1804 if (flags & G_ARRAY)
1808 *++PL_stack_sp = &PL_sv_undef;
1813 if (PL_scopestack_ix > oldscope) {
1817 register PERL_CONTEXT *cx;
1829 if (flags & G_DISCARD) {
1830 PL_stack_sp = PL_stack_base + oldmark;
1839 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1841 S_vcall_body(pTHX_ va_list args)
1843 OP *myop = va_arg(args, OP*);
1844 int is_eval = va_arg(args, int);
1846 call_body(myop, is_eval);
1852 S_call_body(pTHX_ OP *myop, int is_eval)
1854 if (PL_op == myop) {
1856 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
1858 PL_op = Perl_pp_entersub(aTHX); /* this does */
1864 /* Eval a string. The G_EVAL flag is always assumed. */
1867 =for apidoc p||eval_sv
1869 Tells Perl to C<eval> the string in the SV.
1875 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
1877 /* See G_* flags in cop.h */
1880 UNOP myop; /* fake syntax tree node */
1881 volatile I32 oldmark = SP - PL_stack_base;
1882 volatile I32 retval = 0;
1888 if (flags & G_DISCARD) {
1895 Zero(PL_op, 1, UNOP);
1896 EXTEND(PL_stack_sp, 1);
1897 *++PL_stack_sp = sv;
1898 oldscope = PL_scopestack_ix;
1900 if (!(flags & G_NOARGS))
1901 myop.op_flags = OPf_STACKED;
1902 myop.op_next = Nullop;
1903 myop.op_type = OP_ENTEREVAL;
1904 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1905 (flags & G_ARRAY) ? OPf_WANT_LIST :
1907 if (flags & G_KEEPERR)
1908 myop.op_flags |= OPf_SPECIAL;
1910 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1912 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1919 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1921 call_body((OP*)&myop,TRUE);
1923 retval = PL_stack_sp - (PL_stack_base + oldmark);
1924 if (!(flags & G_KEEPERR))
1931 /* my_exit() was called */
1932 PL_curstash = PL_defstash;
1935 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1936 Perl_croak(aTHX_ "Callback called exit");
1941 PL_op = PL_restartop;
1945 PL_stack_sp = PL_stack_base + oldmark;
1946 if (flags & G_ARRAY)
1950 *++PL_stack_sp = &PL_sv_undef;
1956 if (flags & G_DISCARD) {
1957 PL_stack_sp = PL_stack_base + oldmark;
1967 =for apidoc p||eval_pv
1969 Tells Perl to C<eval> the given string and return an SV* result.
1975 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
1978 SV* sv = newSVpv(p, 0);
1980 eval_sv(sv, G_SCALAR);
1987 if (croak_on_error && SvTRUE(ERRSV)) {
1989 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
1995 /* Require a module. */
1998 =for apidoc p||require_pv
2000 Tells Perl to C<require> the file named by the string argument. It is
2001 analogous to the Perl code C<eval "require '$file'">. It's even
2002 implemented that way; consider using Perl_load_module instead.
2007 Perl_require_pv(pTHX_ const char *pv)
2011 PUSHSTACKi(PERLSI_REQUIRE);
2013 sv = sv_newmortal();
2014 sv_setpv(sv, "require '");
2017 eval_sv(sv, G_DISCARD);
2023 Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
2027 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
2028 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
2032 S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
2034 /* This message really ought to be max 23 lines.
2035 * Removed -h because the user already knows that opton. Others? */
2037 static char *usage_msg[] = {
2038 "-0[octal] specify record separator (\\0, if no argument)",
2039 "-a autosplit mode with -n or -p (splits $_ into @F)",
2040 "-C enable native wide character system interfaces",
2041 "-c check syntax only (runs BEGIN and CHECK blocks)",
2042 "-d[:debugger] run program under debugger",
2043 "-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2044 "-e 'command' one line of program (several -e's allowed, omit programfile)",
2045 "-F/pattern/ split() pattern for -a switch (//'s are optional)",
2046 "-i[extension] edit <> files in place (makes backup if extension supplied)",
2047 "-Idirectory specify @INC/#include directory (several -I's allowed)",
2048 "-l[octal] enable line ending processing, specifies line terminator",
2049 "-[mM][-]module execute `use/no module...' before executing program",
2050 "-n assume 'while (<>) { ... }' loop around program",
2051 "-p assume loop like -n but print line also, like sed",
2052 "-P run program through C preprocessor before compilation",
2053 "-s enable rudimentary parsing for switches after programfile",
2054 "-S look for programfile using PATH environment variable",
2055 "-T enable tainting checks",
2056 "-u dump core after parsing program",
2057 "-U allow unsafe operations",
2058 "-v print version, subversion (includes VERY IMPORTANT perl info)",
2059 "-V[:variable] print configuration summary (or a single Config.pm variable)",
2060 "-w enable many useful warnings (RECOMMENDED)",
2061 "-W enable all warnings",
2062 "-X disable all warnings",
2063 "-x[directory] strip off text before #!perl line and perhaps cd to directory",
2067 char **p = usage_msg;
2069 PerlIO_printf(PerlIO_stdout(),
2070 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2073 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
2076 /* This routine handles any switches that can be given during run */
2079 Perl_moreswitches(pTHX_ char *s)
2087 numlen = 0; /* disallow underscores */
2088 rschar = (U32)scan_oct(s, 4, &numlen);
2089 SvREFCNT_dec(PL_nrs);
2090 if (rschar & ~((U8)~0))
2091 PL_nrs = &PL_sv_undef;
2092 else if (!rschar && numlen >= 2)
2093 PL_nrs = newSVpvn("", 0);
2096 PL_nrs = newSVpvn(&ch, 1);
2101 PL_widesyscalls = TRUE;
2106 PL_splitstr = savepv(s + 1);
2120 /* The following permits -d:Mod to accepts arguments following an =
2121 in the fashion that -MSome::Mod does. */
2122 if (*s == ':' || *s == '=') {
2125 sv = newSVpv("use Devel::", 0);
2127 /* We now allow -d:Module=Foo,Bar */
2128 while(isALNUM(*s) || *s==':') ++s;
2130 sv_catpv(sv, start);
2132 sv_catpvn(sv, start, s-start);
2133 sv_catpv(sv, " split(/,/,q{");
2138 my_setenv("PERL5DB", SvPV(sv, PL_na));
2141 PL_perldb = PERLDB_ALL;
2149 if (isALPHA(s[1])) {
2150 /* if adding extra options, remember to update DEBUG_MASK */
2151 static char debopts[] = "psltocPmfrxuLHXDSTR";
2154 for (s++; *s && (d = strchr(debopts,*s)); s++)
2155 PL_debug |= 1 << (d - debopts);
2158 PL_debug = atoi(s+1);
2159 for (s++; isDIGIT(*s); s++) ;
2161 PL_debug |= DEBUG_TOP_FLAG;
2163 if (ckWARN_d(WARN_DEBUGGING))
2164 Perl_warner(aTHX_ WARN_DEBUGGING,
2165 "Recompile perl with -DDEBUGGING to use -D switch\n");
2166 for (s++; isALNUM(*s); s++) ;
2172 usage(PL_origargv[0]);
2176 Safefree(PL_inplace);
2177 PL_inplace = savepv(s+1);
2179 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
2182 if (*s == '-') /* Additional switches on #! line. */
2186 case 'I': /* -I handled both here and in parse_perl() */
2189 while (*s && isSPACE(*s))
2194 /* ignore trailing spaces (possibly followed by other switches) */
2196 for (e = p; *e && !isSPACE(*e); e++) ;
2200 } while (*p && *p != '-');
2201 e = savepvn(s, e-s);
2202 incpush(e, TRUE, TRUE);
2209 Perl_croak(aTHX_ "No directory specified for -I");
2215 SvREFCNT_dec(PL_ors_sv);
2219 PL_ors_sv = newSVpvn("\n",1);
2220 numlen = 0; /* disallow underscores */
2221 *SvPVX(PL_ors_sv) = (char)scan_oct(s, 3 + (*s == '0'), &numlen);
2225 if (RsPARA(PL_nrs)) {
2226 PL_ors_sv = newSVpvn("\n\n",2);
2229 PL_ors_sv = newSVsv(PL_nrs);
2234 forbid_setid("-M"); /* XXX ? */
2237 forbid_setid("-m"); /* XXX ? */
2242 /* -M-foo == 'no foo' */
2243 if (*s == '-') { use = "no "; ++s; }
2244 sv = newSVpv(use,0);
2246 /* We allow -M'Module qw(Foo Bar)' */
2247 while(isALNUM(*s) || *s==':') ++s;
2249 sv_catpv(sv, start);
2250 if (*(start-1) == 'm') {
2252 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
2253 sv_catpv( sv, " ()");
2257 Perl_croak(aTHX_ "Module name required with -%c option",
2259 sv_catpvn(sv, start, s-start);
2260 sv_catpv(sv, " split(/,/,q{");
2266 PL_preambleav = newAV();
2267 av_push(PL_preambleav, sv);
2270 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
2282 PL_doswitches = TRUE;
2287 Perl_croak(aTHX_ "Too late for \"-T\" option");
2291 #ifdef MACOS_TRADITIONAL
2292 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2294 PL_do_undump = TRUE;
2303 PerlIO_printf(PerlIO_stdout(),
2304 Perl_form(aTHX_ "\nThis is perl, v%"VDf" built for %s",
2305 PL_patchlevel, ARCHNAME));
2307 /* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
2308 PerlIO_printf(PerlIO_stdout(),
2309 Perl_form(aTHX_ "\nThis is perl, version %vd\n", PL_patchlevel));
2310 PerlIO_printf(PerlIO_stdout(),
2311 Perl_form(aTHX_ " built under %s at %s %s\n",
2312 OSNAME, __DATE__, __TIME__));
2313 PerlIO_printf(PerlIO_stdout(),
2314 Perl_form(aTHX_ " OS Specific Release: %s\n",
2318 #if defined(LOCAL_PATCH_COUNT)
2319 if (LOCAL_PATCH_COUNT > 0)
2320 PerlIO_printf(PerlIO_stdout(),
2321 "\n(with %d registered patch%s, "
2322 "see perl -V for more detail)",
2323 (int)LOCAL_PATCH_COUNT,
2324 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
2327 PerlIO_printf(PerlIO_stdout(),
2328 "\n\nCopyright 1987-2001, Larry Wall\n");
2329 #ifdef MACOS_TRADITIONAL
2330 PerlIO_printf(PerlIO_stdout(),
2331 "\nMac OS port Copyright (c) 1991-2001, Matthias Neeracher\n");
2334 PerlIO_printf(PerlIO_stdout(),
2335 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
2338 PerlIO_printf(PerlIO_stdout(),
2339 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2340 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
2343 PerlIO_printf(PerlIO_stdout(),
2344 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2345 "Version 5 port Copyright (c) 1994-1999, Andreas Kaiser, Ilya Zakharevich\n");
2348 PerlIO_printf(PerlIO_stdout(),
2349 "atariST series port, ++jrb bammi@cadence.com\n");
2352 PerlIO_printf(PerlIO_stdout(),
2353 "BeOS port Copyright Tom Spindler, 1997-1999\n");
2356 PerlIO_printf(PerlIO_stdout(),
2357 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2001\n");
2360 PerlIO_printf(PerlIO_stdout(),
2361 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
2364 PerlIO_printf(PerlIO_stdout(),
2365 "Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n");
2368 PerlIO_printf(PerlIO_stdout(),
2369 "VM/ESA port by Neale Ferguson, 1998-1999\n");
2372 PerlIO_printf(PerlIO_stdout(),
2373 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
2376 PerlIO_printf(PerlIO_stdout(),
2377 "MiNT port by Guido Flohr, 1997-1999\n");
2380 PerlIO_printf(PerlIO_stdout(),
2381 "EPOC port by Olaf Flebbe, 1999-2000\n");
2383 #ifdef BINARY_BUILD_NOTICE
2384 BINARY_BUILD_NOTICE;
2386 PerlIO_printf(PerlIO_stdout(),
2388 Perl may be copied only under the terms of either the Artistic License or the\n\
2389 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
2390 Complete documentation for Perl, including FAQ lists, should be found on\n\
2391 this system using `man perl' or `perldoc perl'. If you have access to the\n\
2392 Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
2395 if (! (PL_dowarn & G_WARN_ALL_MASK))
2396 PL_dowarn |= G_WARN_ON;
2400 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
2401 PL_compiling.cop_warnings = pWARN_ALL ;
2405 PL_dowarn = G_WARN_ALL_OFF;
2406 PL_compiling.cop_warnings = pWARN_NONE ;
2411 if (s[1] == '-') /* Additional switches on #! line. */
2416 #if defined(WIN32) || !defined(PERL_STRICT_CR)
2422 #ifdef ALTERNATE_SHEBANG
2423 case 'S': /* OS/2 needs -S on "extproc" line. */
2431 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
2436 /* compliments of Tom Christiansen */
2438 /* unexec() can be found in the Gnu emacs distribution */
2439 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
2442 Perl_my_unexec(pTHX)
2450 prog = newSVpv(BIN_EXP, 0);
2451 sv_catpv(prog, "/perl");
2452 file = newSVpv(PL_origfilename, 0);
2453 sv_catpv(file, ".perldump");
2455 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2456 /* unexec prints msg to stderr in case of failure */
2457 PerlProc_exit(status);
2460 # include <lib$routines.h>
2461 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
2463 ABORT(); /* for use with undump */
2468 /* initialize curinterp */
2473 #ifdef PERL_OBJECT /* XXX kludge */
2476 PL_chopset = " \n-"; \
2477 PL_copline = NOLINE; \
2478 PL_curcop = &PL_compiling;\
2479 PL_curcopdb = NULL; \
2481 PL_dumpindent = 4; \
2482 PL_laststatval = -1; \
2483 PL_laststype = OP_STAT; \
2484 PL_maxscream = -1; \
2485 PL_maxsysfd = MAXSYSFD; \
2486 PL_statname = Nullsv; \
2487 PL_tmps_floor = -1; \
2489 PL_op_mask = NULL; \
2490 PL_laststatval = -1; \
2491 PL_laststype = OP_STAT; \
2492 PL_mess_sv = Nullsv; \
2493 PL_splitstr = " "; \
2494 PL_generation = 100; \
2495 PL_exitlist = NULL; \
2496 PL_exitlistlen = 0; \
2498 PL_in_clean_objs = FALSE; \
2499 PL_in_clean_all = FALSE; \
2500 PL_profiledata = NULL; \
2502 PL_rsfp_filters = Nullav; \
2507 # ifdef MULTIPLICITY
2508 # define PERLVAR(var,type)
2509 # define PERLVARA(var,n,type)
2510 # if defined(PERL_IMPLICIT_CONTEXT)
2511 # if defined(USE_THREADS)
2512 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2513 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2514 # else /* !USE_THREADS */
2515 # define PERLVARI(var,type,init) aTHX->var = init;
2516 # define PERLVARIC(var,type,init) aTHX->var = init;
2517 # endif /* USE_THREADS */
2519 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2520 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2522 # include "intrpvar.h"
2523 # ifndef USE_THREADS
2524 # include "thrdvar.h"
2531 # define PERLVAR(var,type)
2532 # define PERLVARA(var,n,type)
2533 # define PERLVARI(var,type,init) PL_##var = init;
2534 # define PERLVARIC(var,type,init) PL_##var = init;
2535 # include "intrpvar.h"
2536 # ifndef USE_THREADS
2537 # include "thrdvar.h"
2549 S_init_main_stash(pTHX)
2553 /* Note that strtab is a rather special HV. Assumptions are made
2554 about not iterating on it, and not adding tie magic to it.
2555 It is properly deallocated in perl_destruct() */
2556 PL_strtab = newHV();
2558 MUTEX_INIT(&PL_strtab_mutex);
2560 HvSHAREKEYS_off(PL_strtab); /* mandatory */
2561 hv_ksplit(PL_strtab, 512);
2563 PL_curstash = PL_defstash = newHV();
2564 PL_curstname = newSVpvn("main",4);
2565 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2566 SvREFCNT_dec(GvHV(gv));
2567 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
2569 HvNAME(PL_defstash) = savepv("main");
2570 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2571 GvMULTI_on(PL_incgv);
2572 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2573 GvMULTI_on(PL_hintgv);
2574 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2575 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2576 GvMULTI_on(PL_errgv);
2577 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2578 GvMULTI_on(PL_replgv);
2579 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
2580 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2581 sv_setpvn(ERRSV, "", 0);
2582 PL_curstash = PL_defstash;
2583 CopSTASH_set(&PL_compiling, PL_defstash);
2584 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
2585 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
2586 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
2587 /* We must init $/ before switches are processed. */
2588 sv_setpvn(get_sv("/", TRUE), "\n", 1);
2592 S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
2597 PL_origfilename = savepv("-e");
2600 /* if find_script() returns, it returns a malloc()-ed value */
2601 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
2603 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2604 char *s = scriptname + 8;
2605 *fdscript = atoi(s);
2609 scriptname = savepv(s + 1);
2610 Safefree(PL_origfilename);
2611 PL_origfilename = scriptname;
2617 Safefree(CopFILE(PL_curcop));
2619 SvREFCNT_dec(CopFILEGV(PL_curcop));
2621 CopFILE_set(PL_curcop, PL_origfilename);
2622 if (strEQ(PL_origfilename,"-"))
2624 if (*fdscript >= 0) {
2625 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
2626 #if defined(HAS_FCNTL) && defined(F_SETFD)
2628 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2631 else if (PL_preprocess) {
2632 char *cpp_cfg = CPPSTDIN;
2633 SV *cpp = newSVpvn("",0);
2634 SV *cmd = NEWSV(0,0);
2636 if (strEQ(cpp_cfg, "cppstdin"))
2637 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
2638 sv_catpv(cpp, cpp_cfg);
2640 sv_catpvn(sv, "-I", 2);
2641 sv_catpv(sv,PRIVLIB_EXP);
2643 DEBUG_P(PerlIO_printf(Perl_debug_log,
2644 "PL_preprocess: scriptname=\"%s\", cpp=\"%s\", sv=\"%s\", CPPMINUS=\"%s\"\n",
2645 scriptname, SvPVX (cpp), SvPVX (sv), CPPMINUS));
2646 #if defined(MSDOS) || defined(WIN32)
2647 Perl_sv_setpvf(aTHX_ cmd, "\
2648 sed %s -e \"/^[^#]/b\" \
2649 -e \"/^#[ ]*include[ ]/b\" \
2650 -e \"/^#[ ]*define[ ]/b\" \
2651 -e \"/^#[ ]*if[ ]/b\" \
2652 -e \"/^#[ ]*ifdef[ ]/b\" \
2653 -e \"/^#[ ]*ifndef[ ]/b\" \
2654 -e \"/^#[ ]*else/b\" \
2655 -e \"/^#[ ]*elif[ ]/b\" \
2656 -e \"/^#[ ]*undef[ ]/b\" \
2657 -e \"/^#[ ]*endif/b\" \
2659 %s | %"SVf" -C %"SVf" %s",
2660 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
2663 Perl_sv_setpvf(aTHX_ cmd, "\
2664 %s %s -e '/^[^#]/b' \
2665 -e '/^#[ ]*include[ ]/b' \
2666 -e '/^#[ ]*define[ ]/b' \
2667 -e '/^#[ ]*if[ ]/b' \
2668 -e '/^#[ ]*ifdef[ ]/b' \
2669 -e '/^#[ ]*ifndef[ ]/b' \
2670 -e '/^#[ ]*else/b' \
2671 -e '/^#[ ]*elif[ ]/b' \
2672 -e '/^#[ ]*undef[ ]/b' \
2673 -e '/^#[ ]*endif/b' \
2675 %s | %"SVf" %"SVf" %s",
2677 Perl_sv_setpvf(aTHX_ cmd, "\
2678 %s %s -e '/^[^#]/b' \
2679 -e '/^#[ ]*include[ ]/b' \
2680 -e '/^#[ ]*define[ ]/b' \
2681 -e '/^#[ ]*if[ ]/b' \
2682 -e '/^#[ ]*ifdef[ ]/b' \
2683 -e '/^#[ ]*ifndef[ ]/b' \
2684 -e '/^#[ ]*else/b' \
2685 -e '/^#[ ]*elif[ ]/b' \
2686 -e '/^#[ ]*undef[ ]/b' \
2687 -e '/^#[ ]*endif/b' \
2689 %s | %"SVf" -C %"SVf" %s",
2696 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
2698 scriptname, cpp, sv, CPPMINUS);
2699 PL_doextract = FALSE;
2700 #ifdef IAMSUID /* actually, this is caught earlier */
2701 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
2703 (void)seteuid(PL_uid); /* musn't stay setuid root */
2706 (void)setreuid((Uid_t)-1, PL_uid);
2708 #ifdef HAS_SETRESUID
2709 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
2711 PerlProc_setuid(PL_uid);
2715 if (PerlProc_geteuid() != PL_uid)
2716 Perl_croak(aTHX_ "Can't do seteuid!\n");
2718 #endif /* IAMSUID */
2719 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
2723 else if (!*scriptname) {
2724 forbid_setid("program input from stdin");
2725 PL_rsfp = PerlIO_stdin();
2728 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
2729 #if defined(HAS_FCNTL) && defined(F_SETFD)
2731 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2736 #ifndef IAMSUID /* in case script is not readable before setuid */
2738 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
2739 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2742 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
2743 (int)PERL_REVISION, (int)PERL_VERSION,
2744 (int)PERL_SUBVERSION), PL_origargv);
2745 Perl_croak(aTHX_ "Can't do setuid\n");
2751 Perl_croak(aTHX_ "Can't open perl script: %s\n",
2754 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
2755 CopFILE(PL_curcop), Strerror(errno));
2761 * I_SYSSTATVFS HAS_FSTATVFS
2763 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
2764 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2765 * here so that metaconfig picks them up. */
2769 S_fd_on_nosuid_fs(pTHX_ int fd)
2771 int check_okay = 0; /* able to do all the required sys/libcalls */
2772 int on_nosuid = 0; /* the fd is on a nosuid fs */
2774 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
2775 * fstatvfs() is UNIX98.
2776 * fstatfs() is 4.3 BSD.
2777 * ustat()+getmnt() is pre-4.3 BSD.
2778 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2779 * an irrelevant filesystem while trying to reach the right one.
2782 #undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2784 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2785 defined(HAS_FSTATVFS)
2786 # define FD_ON_NOSUID_CHECK_OKAY
2787 struct statvfs stfs;
2789 check_okay = fstatvfs(fd, &stfs) == 0;
2790 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
2791 # endif /* fstatvfs */
2793 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2794 defined(PERL_MOUNT_NOSUID) && \
2795 defined(HAS_FSTATFS) && \
2796 defined(HAS_STRUCT_STATFS) && \
2797 defined(HAS_STRUCT_STATFS_F_FLAGS)
2798 # define FD_ON_NOSUID_CHECK_OKAY
2801 check_okay = fstatfs(fd, &stfs) == 0;
2802 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
2803 # endif /* fstatfs */
2805 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2806 defined(PERL_MOUNT_NOSUID) && \
2807 defined(HAS_FSTAT) && \
2808 defined(HAS_USTAT) && \
2809 defined(HAS_GETMNT) && \
2810 defined(HAS_STRUCT_FS_DATA) && \
2812 # define FD_ON_NOSUID_CHECK_OKAY
2815 if (fstat(fd, &fdst) == 0) {
2817 if (ustat(fdst.st_dev, &us) == 0) {
2819 /* NOSTAT_ONE here because we're not examining fields which
2820 * vary between that case and STAT_ONE. */
2821 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
2822 size_t cmplen = sizeof(us.f_fname);
2823 if (sizeof(fsd.fd_req.path) < cmplen)
2824 cmplen = sizeof(fsd.fd_req.path);
2825 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2826 fdst.st_dev == fsd.fd_req.dev) {
2828 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2834 # endif /* fstat+ustat+getmnt */
2836 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2837 defined(HAS_GETMNTENT) && \
2838 defined(HAS_HASMNTOPT) && \
2839 defined(MNTOPT_NOSUID)
2840 # define FD_ON_NOSUID_CHECK_OKAY
2841 FILE *mtab = fopen("/etc/mtab", "r");
2842 struct mntent *entry;
2843 struct stat stb, fsb;
2845 if (mtab && (fstat(fd, &stb) == 0)) {
2846 while (entry = getmntent(mtab)) {
2847 if (stat(entry->mnt_dir, &fsb) == 0
2848 && fsb.st_dev == stb.st_dev)
2850 /* found the filesystem */
2852 if (hasmntopt(entry, MNTOPT_NOSUID))
2855 } /* A single fs may well fail its stat(). */
2860 # endif /* getmntent+hasmntopt */
2863 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
2866 #endif /* IAMSUID */
2869 S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
2875 /* do we need to emulate setuid on scripts? */
2877 /* This code is for those BSD systems that have setuid #! scripts disabled
2878 * in the kernel because of a security problem. Merely defining DOSUID
2879 * in perl will not fix that problem, but if you have disabled setuid
2880 * scripts in the kernel, this will attempt to emulate setuid and setgid
2881 * on scripts that have those now-otherwise-useless bits set. The setuid
2882 * root version must be called suidperl or sperlN.NNN. If regular perl
2883 * discovers that it has opened a setuid script, it calls suidperl with
2884 * the same argv that it had. If suidperl finds that the script it has
2885 * just opened is NOT setuid root, it sets the effective uid back to the
2886 * uid. We don't just make perl setuid root because that loses the
2887 * effective uid we had before invoking perl, if it was different from the
2890 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2891 * be defined in suidperl only. suidperl must be setuid root. The
2892 * Configure script will set this up for you if you want it.
2898 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
2899 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
2900 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
2905 #ifndef HAS_SETREUID
2906 /* On this access check to make sure the directories are readable,
2907 * there is actually a small window that the user could use to make
2908 * filename point to an accessible directory. So there is a faint
2909 * chance that someone could execute a setuid script down in a
2910 * non-accessible directory. I don't know what to do about that.
2911 * But I don't think it's too important. The manual lies when
2912 * it says access() is useful in setuid programs.
2914 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
2915 Perl_croak(aTHX_ "Permission denied");
2917 /* If we can swap euid and uid, then we can determine access rights
2918 * with a simple stat of the file, and then compare device and
2919 * inode to make sure we did stat() on the same file we opened.
2920 * Then we just have to make sure he or she can execute it.
2923 struct stat tmpstatbuf;
2927 setreuid(PL_euid,PL_uid) < 0
2930 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
2933 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
2934 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
2935 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
2936 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
2937 #if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
2938 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
2939 Perl_croak(aTHX_ "Permission denied");
2941 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
2942 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
2943 (void)PerlIO_close(PL_rsfp);
2944 Perl_croak(aTHX_ "Permission denied\n");
2948 setreuid(PL_uid,PL_euid) < 0
2950 # if defined(HAS_SETRESUID)
2951 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
2954 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
2955 Perl_croak(aTHX_ "Can't reswap uid and euid");
2956 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
2957 Perl_croak(aTHX_ "Permission denied\n");
2959 #endif /* HAS_SETREUID */
2960 #endif /* IAMSUID */
2962 if (!S_ISREG(PL_statbuf.st_mode))
2963 Perl_croak(aTHX_ "Permission denied");
2964 if (PL_statbuf.st_mode & S_IWOTH)
2965 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
2966 PL_doswitches = FALSE; /* -s is insecure in suid */
2967 CopLINE_inc(PL_curcop);
2968 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
2969 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
2970 Perl_croak(aTHX_ "No #! line");
2971 s = SvPV(PL_linestr,n_a)+2;
2973 while (!isSPACE(*s)) s++;
2974 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
2975 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
2976 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
2977 Perl_croak(aTHX_ "Not a perl script");
2978 while (*s == ' ' || *s == '\t') s++;
2980 * #! arg must be what we saw above. They can invoke it by
2981 * mentioning suidperl explicitly, but they may not add any strange
2982 * arguments beyond what #! says if they do invoke suidperl that way.
2984 len = strlen(validarg);
2985 if (strEQ(validarg," PHOOEY ") ||
2986 strnNE(s,validarg,len) || !isSPACE(s[len]))
2987 Perl_croak(aTHX_ "Args must match #! line");
2990 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
2991 PL_euid == PL_statbuf.st_uid)
2993 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
2994 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
2995 #endif /* IAMSUID */
2997 if (PL_euid) { /* oops, we're not the setuid root perl */
2998 (void)PerlIO_close(PL_rsfp);
3001 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
3002 (int)PERL_REVISION, (int)PERL_VERSION,
3003 (int)PERL_SUBVERSION), PL_origargv);
3005 Perl_croak(aTHX_ "Can't do setuid\n");
3008 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
3010 (void)setegid(PL_statbuf.st_gid);
3013 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
3015 #ifdef HAS_SETRESGID
3016 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
3018 PerlProc_setgid(PL_statbuf.st_gid);
3022 if (PerlProc_getegid() != PL_statbuf.st_gid)
3023 Perl_croak(aTHX_ "Can't do setegid!\n");
3025 if (PL_statbuf.st_mode & S_ISUID) {
3026 if (PL_statbuf.st_uid != PL_euid)
3028 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
3031 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
3033 #ifdef HAS_SETRESUID
3034 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
3036 PerlProc_setuid(PL_statbuf.st_uid);
3040 if (PerlProc_geteuid() != PL_statbuf.st_uid)
3041 Perl_croak(aTHX_ "Can't do seteuid!\n");
3043 else if (PL_uid) { /* oops, mustn't run as root */
3045 (void)seteuid((Uid_t)PL_uid);
3048 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
3050 #ifdef HAS_SETRESUID
3051 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
3053 PerlProc_setuid((Uid_t)PL_uid);
3057 if (PerlProc_geteuid() != PL_uid)
3058 Perl_croak(aTHX_ "Can't do seteuid!\n");
3061 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
3062 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
3065 else if (PL_preprocess)
3066 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
3067 else if (fdscript >= 0)
3068 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
3070 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
3072 /* We absolutely must clear out any saved ids here, so we */
3073 /* exec the real perl, substituting fd script for scriptname. */
3074 /* (We pass script name as "subdir" of fd, which perl will grok.) */
3075 PerlIO_rewind(PL_rsfp);
3076 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
3077 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3078 if (!PL_origargv[which])
3079 Perl_croak(aTHX_ "Permission denied");
3080 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
3081 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
3082 #if defined(HAS_FCNTL) && defined(F_SETFD)
3083 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
3085 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
3086 (int)PERL_REVISION, (int)PERL_VERSION,
3087 (int)PERL_SUBVERSION), PL_origargv);/* try again */
3088 Perl_croak(aTHX_ "Can't do setuid\n");
3089 #endif /* IAMSUID */
3091 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
3092 #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
3093 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3094 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3096 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3099 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3100 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3101 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3102 /* not set-id, must be wrapped */
3108 S_find_beginning(pTHX)
3110 register char *s, *s2;
3112 /* skip forward in input to the real script? */
3115 #ifdef MACOS_TRADITIONAL
3116 /* Since the Mac OS does not honor #! arguments for us, we do it ourselves */
3118 while (PL_doextract || gMacPerl_AlwaysExtract) {
3119 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3120 if (!gMacPerl_AlwaysExtract)
3121 Perl_croak(aTHX_ "No Perl script found in input\n");
3123 if (PL_doextract) /* require explicit override ? */
3124 if (!OverrideExtract(PL_origfilename))
3125 Perl_croak(aTHX_ "User aborted script\n");
3127 PL_doextract = FALSE;
3129 /* Pater peccavi, file does not have #! */
3130 PerlIO_rewind(PL_rsfp);
3135 while (PL_doextract) {
3136 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
3137 Perl_croak(aTHX_ "No Perl script found in input\n");
3139 if (*s == '#' && s[1] == '!' && (s = instr(s,"perl"))) {
3140 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3141 PL_doextract = FALSE;
3142 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3144 while (*s == ' ' || *s == '\t') s++;
3146 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3147 if (strnEQ(s2-4,"perl",4))
3149 while ((s = moreswitches(s)))
3152 #ifdef MACOS_TRADITIONAL
3163 PL_uid = PerlProc_getuid();
3164 PL_euid = PerlProc_geteuid();
3165 PL_gid = PerlProc_getgid();
3166 PL_egid = PerlProc_getegid();
3168 PL_uid |= PL_gid << 16;
3169 PL_euid |= PL_egid << 16;
3171 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3175 S_forbid_setid(pTHX_ char *s)
3177 if (PL_euid != PL_uid)
3178 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3179 if (PL_egid != PL_gid)
3180 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
3184 Perl_init_debugger(pTHX)
3186 HV *ostash = PL_curstash;
3188 PL_curstash = PL_debstash;
3189 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3190 AvREAL_off(PL_dbargs);
3191 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3192 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3193 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
3194 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3195 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
3196 sv_setiv(PL_DBsingle, 0);
3197 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
3198 sv_setiv(PL_DBtrace, 0);
3199 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
3200 sv_setiv(PL_DBsignal, 0);
3201 PL_curstash = ostash;
3204 #ifndef STRESS_REALLOC
3205 #define REASONABLE(size) (size)
3207 #define REASONABLE(size) (1) /* unreasonable */
3211 Perl_init_stacks(pTHX)
3213 /* start with 128-item stack and 8K cxstack */
3214 PL_curstackinfo = new_stackinfo(REASONABLE(128),
3215 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3216 PL_curstackinfo->si_type = PERLSI_MAIN;
3217 PL_curstack = PL_curstackinfo->si_stack;
3218 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
3220 PL_stack_base = AvARRAY(PL_curstack);
3221 PL_stack_sp = PL_stack_base;
3222 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
3224 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3227 PL_tmps_max = REASONABLE(128);
3229 New(54,PL_markstack,REASONABLE(32),I32);
3230 PL_markstack_ptr = PL_markstack;
3231 PL_markstack_max = PL_markstack + REASONABLE(32);
3235 New(54,PL_scopestack,REASONABLE(32),I32);
3236 PL_scopestack_ix = 0;
3237 PL_scopestack_max = REASONABLE(32);
3239 New(54,PL_savestack,REASONABLE(128),ANY);
3240 PL_savestack_ix = 0;
3241 PL_savestack_max = REASONABLE(128);
3243 New(54,PL_retstack,REASONABLE(16),OP*);
3245 PL_retstack_max = REASONABLE(16);
3253 while (PL_curstackinfo->si_next)
3254 PL_curstackinfo = PL_curstackinfo->si_next;
3255 while (PL_curstackinfo) {
3256 PERL_SI *p = PL_curstackinfo->si_prev;
3257 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3258 Safefree(PL_curstackinfo->si_cxstack);
3259 Safefree(PL_curstackinfo);
3260 PL_curstackinfo = p;
3262 Safefree(PL_tmps_stack);
3263 Safefree(PL_markstack);
3264 Safefree(PL_scopestack);
3265 Safefree(PL_savestack);
3266 Safefree(PL_retstack);
3270 static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */
3281 lex_start(PL_linestr);
3283 PL_subname = newSVpvn("main",4);
3287 S_init_predump_symbols(pTHX)
3292 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3293 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3294 GvMULTI_on(PL_stdingv);
3295 io = GvIOp(PL_stdingv);
3296 IoTYPE(io) = IoTYPE_RDONLY;
3297 IoIFP(io) = PerlIO_stdin();
3298 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
3300 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3302 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
3305 IoTYPE(io) = IoTYPE_WRONLY;
3306 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
3308 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
3310 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3312 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3313 GvMULTI_on(PL_stderrgv);
3314 io = GvIOp(PL_stderrgv);
3315 IoTYPE(io) = IoTYPE_WRONLY;
3316 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
3317 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
3319 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3321 PL_statname = NEWSV(66,0); /* last filename we did stat on */
3324 Safefree(PL_osname);
3325 PL_osname = savepv(OSNAME);
3329 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
3334 #ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3335 char **dup_env_base = 0;
3336 int dup_env_count = 0;
3339 argc--,argv++; /* skip name of script */
3340 if (PL_doswitches) {
3341 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3344 if (argv[0][1] == '-' && !argv[0][2]) {
3348 if ((s = strchr(argv[0], '='))) {
3350 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
3353 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
3356 PL_toptarget = NEWSV(0,0);
3357 sv_upgrade(PL_toptarget, SVt_PVFM);
3358 sv_setpvn(PL_toptarget, "", 0);
3359 PL_bodytarget = NEWSV(0,0);
3360 sv_upgrade(PL_bodytarget, SVt_PVFM);
3361 sv_setpvn(PL_bodytarget, "", 0);
3362 PL_formtarget = PL_bodytarget;
3365 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
3366 #ifdef MACOS_TRADITIONAL
3367 /* $0 is not majick on a Mac */
3368 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3370 sv_setpv(GvSV(tmpgv),PL_origfilename);
3371 magicname("0", "0", 1);
3374 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV)))
3376 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
3378 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
3380 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3381 GvMULTI_on(PL_argvgv);
3382 (void)gv_AVadd(PL_argvgv);
3383 av_clear(GvAVn(PL_argvgv));
3384 for (; argc > 0; argc--,argv++) {
3385 SV *sv = newSVpv(argv[0],0);
3386 av_push(GvAVn(PL_argvgv),sv);
3387 if (PL_widesyscalls)
3388 (void)sv_utf8_decode(sv);
3391 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
3393 GvMULTI_on(PL_envgv);
3394 hv = GvHVn(PL_envgv);
3395 hv_magic(hv, Nullgv, PERL_MAGIC_env);
3396 #ifdef USE_ENVIRON_ARRAY
3397 /* Note that if the supplied env parameter is actually a copy
3398 of the global environ then it may now point to free'd memory
3399 if the environment has been modified since. To avoid this
3400 problem we treat env==NULL as meaning 'use the default'
3405 environ[0] = Nullch;
3406 #ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3409 for (env_base = env; *env; env++)
3411 if ((dup_env_base = (char **)
3412 safesysmalloc( sizeof(char *) * (dup_env_count+1) ))) {
3414 for (env = env_base, dup_env = dup_env_base;
3417 /* With environ one needs to use safesysmalloc(). */
3418 *dup_env = safesysmalloc(strlen(*env) + 1);
3419 (void)strcpy(*dup_env, *env);
3425 #endif /* NEED_ENVIRON_DUP_FOR_MODIFY */
3426 for (; *env; env++) {
3427 if (!(s = strchr(*env,'=')))
3433 sv = newSVpv(s--,0);
3434 (void)hv_store(hv, *env, s - *env, sv, 0);
3437 #ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3440 for (dup_env = dup_env_base; *dup_env; dup_env++)
3441 safesysfree(*dup_env);
3442 safesysfree(dup_env_base);
3444 #endif /* NEED_ENVIRON_DUP_FOR_MODIFY */
3445 #endif /* USE_ENVIRON_ARRAY */
3448 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
3449 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
3453 S_init_perllib(pTHX)
3458 s = PerlEnv_getenv("PERL5LIB");
3460 incpush(s, TRUE, TRUE);
3462 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE);
3464 /* Treat PERL5?LIB as a possible search list logical name -- the
3465 * "natural" VMS idiom for a Unix path string. We allow each
3466 * element to be a set of |-separated directories for compatibility.
3470 if (my_trnlnm("PERL5LIB",buf,0))
3471 do { incpush(buf,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
3473 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE);
3477 /* Use the ~-expanded versions of APPLLIB (undocumented),
3478 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
3481 incpush(APPLLIB_EXP, TRUE, TRUE);
3485 incpush(ARCHLIB_EXP, FALSE, FALSE);
3487 #ifdef MACOS_TRADITIONAL
3489 struct stat tmpstatbuf;
3490 SV * privdir = NEWSV(55, 0);
3491 char * macperl = PerlEnv_getenv("MACPERL");
3496 Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl);
3497 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3498 incpush(SvPVX(privdir), TRUE, FALSE);
3499 Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl);
3500 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3501 incpush(SvPVX(privdir), TRUE, FALSE);
3503 SvREFCNT_dec(privdir);
3506 incpush(":", FALSE, FALSE);
3509 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
3512 incpush(PRIVLIB_EXP, TRUE, FALSE);
3514 incpush(PRIVLIB_EXP, FALSE, FALSE);
3518 /* sitearch is always relative to sitelib on Windows for
3519 * DLL-based path intuition to work correctly */
3520 # if !defined(WIN32)
3521 incpush(SITEARCH_EXP, FALSE, FALSE);
3527 incpush(SITELIB_EXP, TRUE, FALSE); /* this picks up sitearch as well */
3529 incpush(SITELIB_EXP, FALSE, FALSE);
3533 #ifdef SITELIB_STEM /* Search for version-specific dirs below here */
3534 incpush(SITELIB_STEM, FALSE, TRUE);
3537 #ifdef PERL_VENDORARCH_EXP
3538 /* vendorarch is always relative to vendorlib on Windows for
3539 * DLL-based path intuition to work correctly */
3540 # if !defined(WIN32)
3541 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE);
3545 #ifdef PERL_VENDORLIB_EXP
3547 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE); /* this picks up vendorarch as well */
3549 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE);
3553 #ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
3554 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE);
3557 #ifdef PERL_OTHERLIBDIRS
3558 incpush(PERL_OTHERLIBDIRS, TRUE, TRUE);
3562 incpush(".", FALSE, FALSE);
3563 #endif /* MACOS_TRADITIONAL */
3566 #if defined(DOSISH) || defined(EPOC)
3567 # define PERLLIB_SEP ';'
3570 # define PERLLIB_SEP '|'
3572 # if defined(MACOS_TRADITIONAL)
3573 # define PERLLIB_SEP ','
3575 # define PERLLIB_SEP ':'
3579 #ifndef PERLLIB_MANGLE
3580 # define PERLLIB_MANGLE(s,n) (s)
3584 S_incpush(pTHX_ char *p, int addsubdirs, int addoldvers)
3586 SV *subdir = Nullsv;
3591 if (addsubdirs || addoldvers) {
3592 subdir = sv_newmortal();
3595 /* Break at all separators */
3597 SV *libdir = NEWSV(55,0);
3600 /* skip any consecutive separators */
3601 while ( *p == PERLLIB_SEP ) {
3602 /* Uncomment the next line for PATH semantics */
3603 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
3607 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
3608 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
3613 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
3614 p = Nullch; /* break out */
3616 #ifdef MACOS_TRADITIONAL
3617 if (!strchr(SvPVX(libdir), ':'))
3618 sv_insert(libdir, 0, 0, ":", 1);
3619 if (SvPVX(libdir)[SvCUR(libdir)-1] != ':')
3620 sv_catpv(libdir, ":");
3624 * BEFORE pushing libdir onto @INC we may first push version- and
3625 * archname-specific sub-directories.
3627 if (addsubdirs || addoldvers) {
3628 #ifdef PERL_INC_VERSION_LIST
3629 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
3630 const char *incverlist[] = { PERL_INC_VERSION_LIST };
3631 const char **incver;
3633 struct stat tmpstatbuf;
3638 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
3640 while (unix[len-1] == '/') len--; /* Cosmetic */
3641 sv_usepvn(libdir,unix,len);
3644 PerlIO_printf(Perl_error_log,
3645 "Failed to unixify @INC element \"%s\"\n",
3649 #ifdef MACOS_TRADITIONAL
3650 #define PERL_AV_SUFFIX_FMT ""
3651 #define PERL_ARCH_FMT "%s:"
3652 #define PERL_ARCH_FMT_PATH PERL_FS_VER_FMT PERL_AV_SUFFIX_FMT
3654 #define PERL_AV_SUFFIX_FMT "/"
3655 #define PERL_ARCH_FMT "/%s"
3656 #define PERL_ARCH_FMT_PATH PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT
3658 /* .../version/archname if -d .../version/archname */
3659 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH PERL_ARCH_FMT,
3661 (int)PERL_REVISION, (int)PERL_VERSION,
3662 (int)PERL_SUBVERSION, ARCHNAME);
3663 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3664 S_ISDIR(tmpstatbuf.st_mode))
3665 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3667 /* .../version if -d .../version */
3668 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH, libdir,
3669 (int)PERL_REVISION, (int)PERL_VERSION,
3670 (int)PERL_SUBVERSION);
3671 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3672 S_ISDIR(tmpstatbuf.st_mode))
3673 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3675 /* .../archname if -d .../archname */
3676 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, ARCHNAME);
3677 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3678 S_ISDIR(tmpstatbuf.st_mode))
3679 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3682 #ifdef PERL_INC_VERSION_LIST
3684 for (incver = incverlist; *incver; incver++) {
3685 /* .../xxx if -d .../xxx */
3686 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, *incver);
3687 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3688 S_ISDIR(tmpstatbuf.st_mode))
3689 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3695 /* finally push this lib directory on the end of @INC */
3696 av_push(GvAVn(PL_incgv), libdir);
3701 STATIC struct perl_thread *
3702 S_init_main_thread(pTHX)
3704 #if !defined(PERL_IMPLICIT_CONTEXT)
3705 struct perl_thread *thr;
3709 Newz(53, thr, 1, struct perl_thread);
3710 PL_curcop = &PL_compiling;
3711 thr->interp = PERL_GET_INTERP;
3712 thr->cvcache = newHV();
3713 thr->threadsv = newAV();
3714 /* thr->threadsvp is set when find_threadsv is called */
3715 thr->specific = newAV();
3716 thr->flags = THRf_R_JOINABLE;
3717 MUTEX_INIT(&thr->mutex);
3718 /* Handcraft thrsv similarly to mess_sv */
3719 New(53, PL_thrsv, 1, SV);
3720 Newz(53, xpv, 1, XPV);
3721 SvFLAGS(PL_thrsv) = SVt_PV;
3722 SvANY(PL_thrsv) = (void*)xpv;
3723 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
3724 SvPVX(PL_thrsv) = (char*)thr;
3725 SvCUR_set(PL_thrsv, sizeof(thr));
3726 SvLEN_set(PL_thrsv, sizeof(thr));
3727 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
3728 thr->oursv = PL_thrsv;
3729 PL_chopset = " \n-";
3732 MUTEX_LOCK(&PL_threads_mutex);
3738 MUTEX_UNLOCK(&PL_threads_mutex);
3740 #ifdef HAVE_THREAD_INTERN
3741 Perl_init_thread_intern(thr);
3744 #ifdef SET_THREAD_SELF
3745 SET_THREAD_SELF(thr);
3747 thr->self = pthread_self();
3748 #endif /* SET_THREAD_SELF */
3752 * These must come after the thread self setting
3753 * because sv_setpvn does SvTAINT and the taint
3754 * fields thread selfness being set.
3756 PL_toptarget = NEWSV(0,0);
3757 sv_upgrade(PL_toptarget, SVt_PVFM);
3758 sv_setpvn(PL_toptarget, "", 0);
3759 PL_bodytarget = NEWSV(0,0);
3760 sv_upgrade(PL_bodytarget, SVt_PVFM);
3761 sv_setpvn(PL_bodytarget, "", 0);
3762 PL_formtarget = PL_bodytarget;
3763 thr->errsv = newSVpvn("", 0);
3764 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
3767 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3768 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3769 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3770 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3771 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
3773 PL_reginterp_cnt = 0;
3777 #endif /* USE_THREADS */
3780 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
3783 line_t oldline = CopLINE(PL_curcop);
3789 while (AvFILL(paramList) >= 0) {
3790 cv = (CV*)av_shift(paramList);
3791 if ((PL_minus_c & 0x10) && (paramList == PL_beginav)) {
3792 /* save PL_beginav for compiler */
3793 if (! PL_beginav_save)
3794 PL_beginav_save = newAV();
3795 av_push(PL_beginav_save, (SV*)cv);
3799 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3800 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_list_body), cv);
3806 #ifndef PERL_FLEXIBLE_EXCEPTIONS
3810 (void)SvPV(atsv, len);
3813 PL_curcop = &PL_compiling;
3814 CopLINE_set(PL_curcop, oldline);
3815 if (paramList == PL_beginav)
3816 sv_catpv(atsv, "BEGIN failed--compilation aborted");
3818 Perl_sv_catpvf(aTHX_ atsv,
3819 "%s failed--call queue aborted",
3820 paramList == PL_checkav ? "CHECK"
3821 : paramList == PL_initav ? "INIT"
3823 while (PL_scopestack_ix > oldscope)
3826 Perl_croak(aTHX_ "%s", SvPVx(atsv, n_a));
3833 /* my_exit() was called */
3834 while (PL_scopestack_ix > oldscope)
3837 PL_curstash = PL_defstash;
3838 PL_curcop = &PL_compiling;
3839 CopLINE_set(PL_curcop, oldline);
3841 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
3842 if (paramList == PL_beginav)
3843 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
3845 Perl_croak(aTHX_ "%s failed--call queue aborted",
3846 paramList == PL_checkav ? "CHECK"
3847 : paramList == PL_initav ? "INIT"
3854 PL_curcop = &PL_compiling;
3855 CopLINE_set(PL_curcop, oldline);
3858 PerlIO_printf(Perl_error_log, "panic: restartop\n");
3866 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3868 S_vcall_list_body(pTHX_ va_list args)
3870 CV *cv = va_arg(args, CV*);
3871 return call_list_body(cv);
3876 S_call_list_body(pTHX_ CV *cv)
3878 PUSHMARK(PL_stack_sp);
3879 call_sv((SV*)cv, G_EVAL|G_DISCARD);
3884 Perl_my_exit(pTHX_ U32 status)
3886 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
3887 thr, (unsigned long) status));
3896 STATUS_NATIVE_SET(status);
3903 Perl_my_failure_exit(pTHX)
3906 if (vaxc$errno & 1) {
3907 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
3908 STATUS_NATIVE_SET(44);
3911 if (!vaxc$errno && errno) /* unlikely */
3912 STATUS_NATIVE_SET(44);
3914 STATUS_NATIVE_SET(vaxc$errno);
3919 STATUS_POSIX_SET(errno);
3921 exitstatus = STATUS_POSIX >> 8;
3922 if (exitstatus & 255)
3923 STATUS_POSIX_SET(exitstatus);
3925 STATUS_POSIX_SET(255);
3932 S_my_exit_jump(pTHX)
3934 register PERL_CONTEXT *cx;
3939 SvREFCNT_dec(PL_e_script);
3940 PL_e_script = Nullsv;
3943 POPSTACK_TO(PL_mainstack);
3944 if (cxstack_ix >= 0) {
3947 POPBLOCK(cx,PL_curpm);
3959 read_e_script(pTHXo_ int idx, SV *buf_sv, int maxlen)
3962 p = SvPVX(PL_e_script);
3963 nl = strchr(p, '\n');
3964 nl = (nl) ? nl+1 : SvEND(PL_e_script);
3966 filter_del(read_e_script);
3969 sv_catpvn(buf_sv, p, nl-p);
3970 sv_chop(PL_e_script, nl);