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)PerlIO_close(PerlIO_importFILE(stdaux, 0));
230 (void)PerlIO_close(PerlIO_importFILE(stdprn, 0));
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);
287 PL_regex_padav = newAV();
289 #ifdef USE_REENTRANT_API
290 New(31337, PL_reentrant_buffer,1, REBUF);
291 New(31337, PL_reentrant_buffer->tmbuff,1, struct tm);
297 =for apidoc perl_destruct
299 Shuts down a Perl interpreter. See L<perlembed>.
307 int destruct_level; /* 0=none, 1=full, 2=full with checks */
312 #endif /* USE_THREADS */
314 /* wait for all pseudo-forked children to finish */
315 PERL_WAIT_FOR_CHILDREN;
319 /* Pass 1 on any remaining threads: detach joinables, join zombies */
321 MUTEX_LOCK(&PL_threads_mutex);
322 DEBUG_S(PerlIO_printf(Perl_debug_log,
323 "perl_destruct: waiting for %d threads...\n",
325 for (t = thr->next; t != thr; t = t->next) {
326 MUTEX_LOCK(&t->mutex);
327 switch (ThrSTATE(t)) {
330 DEBUG_S(PerlIO_printf(Perl_debug_log,
331 "perl_destruct: joining zombie %p\n", t));
332 ThrSETSTATE(t, THRf_DEAD);
333 MUTEX_UNLOCK(&t->mutex);
336 * The SvREFCNT_dec below may take a long time (e.g. av
337 * may contain an object scalar whose destructor gets
338 * called) so we have to unlock threads_mutex and start
341 MUTEX_UNLOCK(&PL_threads_mutex);
343 SvREFCNT_dec((SV*)av);
344 DEBUG_S(PerlIO_printf(Perl_debug_log,
345 "perl_destruct: joined zombie %p OK\n", t));
347 case THRf_R_JOINABLE:
348 DEBUG_S(PerlIO_printf(Perl_debug_log,
349 "perl_destruct: detaching thread %p\n", t));
350 ThrSETSTATE(t, THRf_R_DETACHED);
352 * We unlock threads_mutex and t->mutex in the opposite order
353 * from which we locked them just so that DETACH won't
354 * deadlock if it panics. It's only a breach of good style
355 * not a bug since they are unlocks not locks.
357 MUTEX_UNLOCK(&PL_threads_mutex);
359 MUTEX_UNLOCK(&t->mutex);
362 DEBUG_S(PerlIO_printf(Perl_debug_log,
363 "perl_destruct: ignoring %p (state %u)\n",
365 MUTEX_UNLOCK(&t->mutex);
366 /* fall through and out */
369 /* We leave the above "Pass 1" loop with threads_mutex still locked */
371 /* Pass 2 on remaining threads: wait for the thread count to drop to one */
372 while (PL_nthreads > 1)
374 DEBUG_S(PerlIO_printf(Perl_debug_log,
375 "perl_destruct: final wait for %d threads\n",
377 COND_WAIT(&PL_nthreads_cond, &PL_threads_mutex);
379 /* At this point, we're the last thread */
380 MUTEX_UNLOCK(&PL_threads_mutex);
381 DEBUG_S(PerlIO_printf(Perl_debug_log, "perl_destruct: armageddon has arrived\n"));
382 MUTEX_DESTROY(&PL_threads_mutex);
383 COND_DESTROY(&PL_nthreads_cond);
385 #endif /* !defined(FAKE_THREADS) */
386 #endif /* USE_THREADS */
388 destruct_level = PL_perl_destruct_level;
392 if ((s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL"))) {
394 if (destruct_level < i)
404 /* We must account for everything. */
406 /* Destroy the main CV and syntax tree */
408 PL_curpad = AvARRAY(PL_comppad);
409 op_free(PL_main_root);
410 PL_main_root = Nullop;
412 PL_curcop = &PL_compiling;
413 PL_main_start = Nullop;
414 SvREFCNT_dec(PL_main_cv);
418 /* Tell PerlIO we are about to tear things apart in case
419 we have layers which are using resources that should
423 PerlIO_destruct(aTHX);
425 if (PL_sv_objcount) {
427 * Try to destruct global references. We do this first so that the
428 * destructors and destructees still exist. Some sv's might remain.
429 * Non-referenced objects are on their own.
434 /* unhook hooks which will soon be, or use, destroyed data */
435 SvREFCNT_dec(PL_warnhook);
436 PL_warnhook = Nullsv;
437 SvREFCNT_dec(PL_diehook);
440 /* call exit list functions */
441 while (PL_exitlistlen-- > 0)
442 PL_exitlist[PL_exitlistlen].fn(aTHXo_ PL_exitlist[PL_exitlistlen].ptr);
444 Safefree(PL_exitlist);
446 if (destruct_level == 0){
448 DEBUG_P(debprofdump());
450 /* The exit() function will do everything that needs doing. */
454 /* jettison our possibly duplicated environment */
456 #ifdef USE_ENVIRON_ARRAY
457 if (environ != PL_origenviron) {
460 for (i = 0; environ[i]; i++)
461 safesysfree(environ[i]);
462 /* Must use safesysfree() when working with environ. */
463 safesysfree(environ);
465 environ = PL_origenviron;
469 /* loosen bonds of global variables */
472 (void)PerlIO_close(PL_rsfp);
476 /* Filters for program text */
477 SvREFCNT_dec(PL_rsfp_filters);
478 PL_rsfp_filters = Nullav;
481 PL_preprocess = FALSE;
487 PL_doswitches = FALSE;
488 PL_dowarn = G_WARN_OFF;
489 PL_doextract = FALSE;
490 PL_sawampersand = FALSE; /* must save all match strings */
493 Safefree(PL_inplace);
495 SvREFCNT_dec(PL_patchlevel);
498 SvREFCNT_dec(PL_e_script);
499 PL_e_script = Nullsv;
502 /* magical thingies */
504 SvREFCNT_dec(PL_ofs_sv); /* $, */
507 SvREFCNT_dec(PL_ors_sv); /* $\ */
510 SvREFCNT_dec(PL_rs); /* $/ */
513 SvREFCNT_dec(PL_nrs); /* $/ helper */
516 PL_multiline = 0; /* $* */
517 Safefree(PL_osname); /* $^O */
520 SvREFCNT_dec(PL_statname);
521 PL_statname = Nullsv;
524 /* defgv, aka *_ should be taken care of elsewhere */
526 /* clean up after study() */
527 SvREFCNT_dec(PL_lastscream);
528 PL_lastscream = Nullsv;
529 Safefree(PL_screamfirst);
531 Safefree(PL_screamnext);
535 Safefree(PL_efloatbuf);
536 PL_efloatbuf = Nullch;
539 /* startup and shutdown function lists */
540 SvREFCNT_dec(PL_beginav);
541 SvREFCNT_dec(PL_endav);
542 SvREFCNT_dec(PL_checkav);
543 SvREFCNT_dec(PL_initav);
549 /* shortcuts just get cleared */
555 PL_argvoutgv = Nullgv;
557 PL_stderrgv = Nullgv;
558 PL_last_in_gv = Nullgv;
560 PL_debstash = Nullhv;
562 /* reset so print() ends up where we expect */
565 SvREFCNT_dec(PL_argvout_stack);
566 PL_argvout_stack = Nullav;
568 SvREFCNT_dec(PL_modglobal);
569 PL_modglobal = Nullhv;
570 SvREFCNT_dec(PL_preambleav);
571 PL_preambleav = Nullav;
572 SvREFCNT_dec(PL_subname);
574 SvREFCNT_dec(PL_linestr);
576 SvREFCNT_dec(PL_pidstatus);
577 PL_pidstatus = Nullhv;
578 SvREFCNT_dec(PL_toptarget);
579 PL_toptarget = Nullsv;
580 SvREFCNT_dec(PL_bodytarget);
581 PL_bodytarget = Nullsv;
582 PL_formtarget = Nullsv;
584 /* free locale stuff */
585 #ifdef USE_LOCALE_COLLATE
586 Safefree(PL_collation_name);
587 PL_collation_name = Nullch;
590 #ifdef USE_LOCALE_NUMERIC
591 Safefree(PL_numeric_name);
592 PL_numeric_name = Nullch;
593 SvREFCNT_dec(PL_numeric_radix_sv);
596 /* clear utf8 character classes */
597 SvREFCNT_dec(PL_utf8_alnum);
598 SvREFCNT_dec(PL_utf8_alnumc);
599 SvREFCNT_dec(PL_utf8_ascii);
600 SvREFCNT_dec(PL_utf8_alpha);
601 SvREFCNT_dec(PL_utf8_space);
602 SvREFCNT_dec(PL_utf8_cntrl);
603 SvREFCNT_dec(PL_utf8_graph);
604 SvREFCNT_dec(PL_utf8_digit);
605 SvREFCNT_dec(PL_utf8_upper);
606 SvREFCNT_dec(PL_utf8_lower);
607 SvREFCNT_dec(PL_utf8_print);
608 SvREFCNT_dec(PL_utf8_punct);
609 SvREFCNT_dec(PL_utf8_xdigit);
610 SvREFCNT_dec(PL_utf8_mark);
611 SvREFCNT_dec(PL_utf8_toupper);
612 SvREFCNT_dec(PL_utf8_tolower);
613 PL_utf8_alnum = Nullsv;
614 PL_utf8_alnumc = Nullsv;
615 PL_utf8_ascii = Nullsv;
616 PL_utf8_alpha = Nullsv;
617 PL_utf8_space = Nullsv;
618 PL_utf8_cntrl = Nullsv;
619 PL_utf8_graph = Nullsv;
620 PL_utf8_digit = Nullsv;
621 PL_utf8_upper = Nullsv;
622 PL_utf8_lower = Nullsv;
623 PL_utf8_print = Nullsv;
624 PL_utf8_punct = Nullsv;
625 PL_utf8_xdigit = Nullsv;
626 PL_utf8_mark = Nullsv;
627 PL_utf8_toupper = Nullsv;
628 PL_utf8_totitle = Nullsv;
629 PL_utf8_tolower = Nullsv;
631 if (!specialWARN(PL_compiling.cop_warnings))
632 SvREFCNT_dec(PL_compiling.cop_warnings);
633 PL_compiling.cop_warnings = Nullsv;
634 if (!specialCopIO(PL_compiling.cop_io))
635 SvREFCNT_dec(PL_compiling.cop_io);
636 PL_compiling.cop_io = Nullsv;
638 Safefree(CopFILE(&PL_compiling));
639 CopFILE(&PL_compiling) = Nullch;
640 Safefree(CopSTASHPV(&PL_compiling));
642 SvREFCNT_dec(CopFILEGV(&PL_compiling));
643 CopFILEGV(&PL_compiling) = Nullgv;
644 /* cop_stash is not refcounted */
647 /* Prepare to destruct main symbol table. */
652 SvREFCNT_dec(PL_curstname);
653 PL_curstname = Nullsv;
655 /* clear queued errors */
656 SvREFCNT_dec(PL_errors);
660 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
661 if (PL_scopestack_ix != 0)
662 Perl_warner(aTHX_ WARN_INTERNAL,
663 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
664 (long)PL_scopestack_ix);
665 if (PL_savestack_ix != 0)
666 Perl_warner(aTHX_ WARN_INTERNAL,
667 "Unbalanced saves: %ld more saves than restores\n",
668 (long)PL_savestack_ix);
669 if (PL_tmps_floor != -1)
670 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced tmps: %ld more allocs than frees\n",
671 (long)PL_tmps_floor + 1);
672 if (cxstack_ix != -1)
673 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced context: %ld more PUSHes than POPs\n",
674 (long)cxstack_ix + 1);
677 /* Now absolutely destruct everything, somehow or other, loops or no. */
678 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
679 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
681 /* the 2 is for PL_fdpid and PL_strtab */
682 while (PL_sv_count > 2 && sv_clean_all())
685 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
686 SvFLAGS(PL_fdpid) |= SVt_PVAV;
687 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
688 SvFLAGS(PL_strtab) |= SVt_PVHV;
690 AvREAL_off(PL_fdpid); /* no surviving entries */
691 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
694 #ifdef HAVE_INTERP_INTERN
698 /* Destruct the global string table. */
700 /* Yell and reset the HeVAL() slots that are still holding refcounts,
701 * so that sv_free() won't fail on them.
709 max = HvMAX(PL_strtab);
710 array = HvARRAY(PL_strtab);
713 if (hent && ckWARN_d(WARN_INTERNAL)) {
714 Perl_warner(aTHX_ WARN_INTERNAL,
715 "Unbalanced string table refcount: (%d) for \"%s\"",
716 HeVAL(hent) - Nullsv, HeKEY(hent));
717 HeVAL(hent) = Nullsv;
727 SvREFCNT_dec(PL_strtab);
730 /* free the pointer table used for cloning */
731 ptr_table_free(PL_ptr_table);
734 /* free special SVs */
736 SvREFCNT(&PL_sv_yes) = 0;
737 sv_clear(&PL_sv_yes);
738 SvANY(&PL_sv_yes) = NULL;
739 SvFLAGS(&PL_sv_yes) = 0;
741 SvREFCNT(&PL_sv_no) = 0;
743 SvANY(&PL_sv_no) = NULL;
744 SvFLAGS(&PL_sv_no) = 0;
746 SvREFCNT(&PL_sv_undef) = 0;
747 SvREADONLY_off(&PL_sv_undef);
749 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
750 Perl_warner(aTHX_ WARN_INTERNAL,"Scalars leaked: %ld\n", (long)PL_sv_count);
752 Safefree(PL_origfilename);
753 Safefree(PL_reg_start_tmp);
755 Safefree(PL_reg_curpm);
756 Safefree(PL_reg_poscache);
757 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
758 Safefree(PL_op_mask);
759 Safefree(PL_psig_ptr);
760 Safefree(PL_psig_name);
761 Safefree(PL_bitcount);
762 Safefree(PL_psig_pend);
764 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
766 DEBUG_P(debprofdump());
768 MUTEX_DESTROY(&PL_strtab_mutex);
769 MUTEX_DESTROY(&PL_sv_mutex);
770 MUTEX_DESTROY(&PL_eval_mutex);
771 MUTEX_DESTROY(&PL_cred_mutex);
772 MUTEX_DESTROY(&PL_fdpid_mutex);
773 COND_DESTROY(&PL_eval_cond);
774 #ifdef EMULATE_ATOMIC_REFCOUNTS
775 MUTEX_DESTROY(&PL_svref_mutex);
776 #endif /* EMULATE_ATOMIC_REFCOUNTS */
778 /* As the penultimate thing, free the non-arena SV for thrsv */
779 Safefree(SvPVX(PL_thrsv));
780 Safefree(SvANY(PL_thrsv));
783 #endif /* USE_THREADS */
785 #ifdef USE_REENTRANT_API
786 Safefree(PL_reentrant_buffer->tmbuff);
787 Safefree(PL_reentrant_buffer);
792 /* As the absolutely last thing, free the non-arena SV for mess() */
795 /* it could have accumulated taint magic */
796 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
799 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
800 moremagic = mg->mg_moremagic;
801 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
803 Safefree(mg->mg_ptr);
807 /* we know that type >= SVt_PV */
808 (void)SvOOK_off(PL_mess_sv);
809 Safefree(SvPVX(PL_mess_sv));
810 Safefree(SvANY(PL_mess_sv));
811 Safefree(PL_mess_sv);
817 =for apidoc perl_free
819 Releases a Perl interpreter. See L<perlembed>.
827 #if defined(PERL_OBJECT)
830 # if defined(WIN32) || defined(NETWARE)
831 # if defined(PERL_IMPLICIT_SYS)
833 void *host = nw_internal_host;
835 void *host = w32_internal_host;
838 if (PerlProc_lasthost()) {
844 nw5_delete_internal_host(host);
846 win32_delete_internal_host(host);
859 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
861 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
862 PL_exitlist[PL_exitlistlen].fn = fn;
863 PL_exitlist[PL_exitlistlen].ptr = ptr;
868 =for apidoc perl_parse
870 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
876 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
885 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
888 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
889 setuid perl scripts securely.\n");
893 #if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
894 _dyld_lookup_and_bind
895 ("__environ", (unsigned long *) &environ_pointer, NULL);
900 #ifdef USE_ENVIRON_ARRAY
901 PL_origenviron = environ;
906 /* Come here if running an undumped a.out. */
908 PL_origfilename = savepv(argv[0]);
909 PL_do_undump = FALSE;
910 cxstack_ix = -1; /* start label stack again */
912 init_postdump_symbols(argc,argv,env);
917 PL_curpad = AvARRAY(PL_comppad);
918 op_free(PL_main_root);
919 PL_main_root = Nullop;
921 PL_main_start = Nullop;
922 SvREFCNT_dec(PL_main_cv);
926 oldscope = PL_scopestack_ix;
927 PL_dowarn = G_WARN_OFF;
929 #ifdef PERL_FLEXIBLE_EXCEPTIONS
930 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
936 #ifndef PERL_FLEXIBLE_EXCEPTIONS
937 parse_body(env,xsinit);
940 call_list(oldscope, PL_checkav);
947 /* my_exit() was called */
948 while (PL_scopestack_ix > oldscope)
951 PL_curstash = PL_defstash;
953 call_list(oldscope, PL_checkav);
954 ret = STATUS_NATIVE_EXPORT;
957 PerlIO_printf(Perl_error_log, "panic: top_env\n");
965 #ifdef PERL_FLEXIBLE_EXCEPTIONS
967 S_vparse_body(pTHX_ va_list args)
969 char **env = va_arg(args, char**);
970 XSINIT_t xsinit = va_arg(args, XSINIT_t);
972 return parse_body(env, xsinit);
977 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
979 int argc = PL_origargc;
980 char **argv = PL_origargv;
981 char *scriptname = NULL;
983 VOL bool dosearch = FALSE;
988 char *popts, *cddir = Nullch;
990 sv_setpvn(PL_linestr,"",0);
991 sv = newSVpvn("",0); /* first used for -I flags */
995 for (argc--,argv++; argc > 0; argc--,argv++) {
996 if (argv[0][0] != '-' || !argv[0][1])
1000 validarg = " PHOOEY ";
1009 win32_argv2utf8(argc-1, argv+1);
1012 #ifndef PERL_STRICT_CR
1036 if ((s = moreswitches(s)))
1046 #ifdef MACOS_TRADITIONAL
1047 /* ignore -e for Dev:Pseudo argument */
1048 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
1051 if (PL_euid != PL_uid || PL_egid != PL_gid)
1052 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
1054 PL_e_script = newSVpvn("",0);
1055 filter_add(read_e_script, NULL);
1058 sv_catpv(PL_e_script, s);
1060 sv_catpv(PL_e_script, argv[1]);
1064 Perl_croak(aTHX_ "No code specified for -e");
1065 sv_catpv(PL_e_script, "\n");
1068 case 'I': /* -I handled both here and in moreswitches() */
1070 if (!*++s && (s=argv[1]) != Nullch) {
1075 STRLEN len = strlen(s);
1076 p = savepvn(s, len);
1077 incpush(p, TRUE, TRUE);
1078 sv_catpvn(sv, "-I", 2);
1079 sv_catpvn(sv, p, len);
1080 sv_catpvn(sv, " ", 1);
1084 Perl_croak(aTHX_ "No directory specified for -I");
1088 PL_preprocess = TRUE;
1098 PL_preambleav = newAV();
1099 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
1101 PL_Sv = newSVpv("print myconfig();",0);
1103 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
1105 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
1107 sv_catpv(PL_Sv,"\" Compile-time options:");
1109 sv_catpv(PL_Sv," DEBUGGING");
1111 # ifdef MULTIPLICITY
1112 sv_catpv(PL_Sv," MULTIPLICITY");
1115 sv_catpv(PL_Sv," USE_THREADS");
1117 # ifdef USE_ITHREADS
1118 sv_catpv(PL_Sv," USE_ITHREADS");
1120 # ifdef USE_64_BIT_INT
1121 sv_catpv(PL_Sv," USE_64_BIT_INT");
1123 # ifdef USE_64_BIT_ALL
1124 sv_catpv(PL_Sv," USE_64_BIT_ALL");
1126 # ifdef USE_LONG_DOUBLE
1127 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1129 # ifdef USE_LARGE_FILES
1130 sv_catpv(PL_Sv," USE_LARGE_FILES");
1133 sv_catpv(PL_Sv," USE_SOCKS");
1136 sv_catpv(PL_Sv," PERL_OBJECT");
1138 # ifdef PERL_IMPLICIT_CONTEXT
1139 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1141 # ifdef PERL_IMPLICIT_SYS
1142 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1144 sv_catpv(PL_Sv,"\\n\",");
1146 #if defined(LOCAL_PATCH_COUNT)
1147 if (LOCAL_PATCH_COUNT > 0) {
1149 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
1150 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1151 if (PL_localpatches[i])
1152 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
1156 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
1159 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
1161 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
1164 sv_catpv(PL_Sv, "; \
1166 @env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; ");
1169 push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
1172 print \" \\%ENV:\\n @env\\n\" if @env; \
1173 print \" \\@INC:\\n @INC\\n\";");
1176 PL_Sv = newSVpv("config_vars(qw(",0);
1177 sv_catpv(PL_Sv, ++s);
1178 sv_catpv(PL_Sv, "))");
1181 av_push(PL_preambleav, PL_Sv);
1182 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1185 PL_doextract = TRUE;
1193 if (!*++s || isSPACE(*s)) {
1197 /* catch use of gnu style long options */
1198 if (strEQ(s, "version")) {
1202 if (strEQ(s, "help")) {
1209 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1215 #ifndef SECURE_INTERNAL_GETENV
1218 (popts = PerlEnv_getenv("PERL5OPT")))
1223 if (*s == '-' && *(s+1) == 'T')
1238 if (!strchr("DIMUdmw", *s))
1239 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
1252 scriptname = argv[0];
1255 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1257 else if (scriptname == Nullch) {
1259 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1267 open_script(scriptname,dosearch,sv,&fdscript);
1269 validate_suid(validarg, scriptname,fdscript);
1272 #if defined(SIGCHLD) || defined(SIGCLD)
1275 # define SIGCHLD SIGCLD
1277 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1278 if (sigstate == SIG_IGN) {
1279 if (ckWARN(WARN_SIGNAL))
1280 Perl_warner(aTHX_ WARN_SIGNAL,
1281 "Can't ignore signal CHLD, forcing to default");
1282 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1288 #ifdef MACOS_TRADITIONAL
1289 if (PL_doextract || gMacPerl_AlwaysExtract) {
1294 if (cddir && PerlDir_chdir(cddir) < 0)
1295 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1299 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1300 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1301 CvUNIQUE_on(PL_compcv);
1303 PL_comppad = newAV();
1304 av_push(PL_comppad, Nullsv);
1305 PL_curpad = AvARRAY(PL_comppad);
1306 PL_comppad_name = newAV();
1307 PL_comppad_name_fill = 0;
1308 PL_min_intro_pending = 0;
1311 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
1312 PL_curpad[0] = (SV*)newAV();
1313 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1314 CvOWNER(PL_compcv) = 0;
1315 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1316 MUTEX_INIT(CvMUTEXP(PL_compcv));
1317 #endif /* USE_THREADS */
1319 comppadlist = newAV();
1320 AvREAL_off(comppadlist);
1321 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1322 av_store(comppadlist, 1, (SV*)PL_comppad);
1323 CvPADLIST(PL_compcv) = comppadlist;
1326 boot_core_UNIVERSAL();
1328 boot_core_xsutils();
1332 (*xsinit)(aTHXo); /* in case linked C routines want magical variables */
1334 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
1340 # ifdef HAS_SOCKS5_INIT
1341 socks5_init(argv[0]);
1347 init_predump_symbols();
1348 /* init_postdump_symbols not currently designed to be called */
1349 /* more than once (ENV isn't cleared first, for example) */
1350 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
1352 init_postdump_symbols(argc,argv,env);
1356 /* now parse the script */
1358 SETERRNO(0,SS$_NORMAL);
1360 #ifdef MACOS_TRADITIONAL
1361 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1363 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1365 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1366 MacPerl_MPWFileName(PL_origfilename));
1370 if (yyparse() || PL_error_count) {
1372 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
1374 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1379 CopLINE_set(PL_curcop, 0);
1380 PL_curstash = PL_defstash;
1381 PL_preprocess = FALSE;
1383 SvREFCNT_dec(PL_e_script);
1384 PL_e_script = Nullsv;
1387 /* now that script is parsed, we can modify record separator */
1388 SvREFCNT_dec(PL_rs);
1389 PL_rs = SvREFCNT_inc(PL_nrs);
1390 sv_setsv(get_sv("/", TRUE), PL_rs);
1395 SAVECOPFILE(PL_curcop);
1396 SAVECOPLINE(PL_curcop);
1397 gv_check(PL_defstash);
1404 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1405 dump_mstats("after compilation:");
1414 =for apidoc perl_run
1416 Tells a Perl interpreter to run. See L<perlembed>.
1431 oldscope = PL_scopestack_ix;
1433 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1435 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1441 cxstack_ix = -1; /* start context stack again */
1443 case 0: /* normal completion */
1444 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1449 case 2: /* my_exit() */
1450 while (PL_scopestack_ix > oldscope)
1453 PL_curstash = PL_defstash;
1454 if (PL_endav && !PL_minus_c)
1455 call_list(oldscope, PL_endav);
1457 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1458 dump_mstats("after execution: ");
1460 ret = STATUS_NATIVE_EXPORT;
1464 POPSTACK_TO(PL_mainstack);
1467 PerlIO_printf(Perl_error_log, "panic: restartop\n");
1477 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1479 S_vrun_body(pTHX_ va_list args)
1481 I32 oldscope = va_arg(args, I32);
1483 return run_body(oldscope);
1489 S_run_body(pTHX_ I32 oldscope)
1491 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
1492 PL_sawampersand ? "Enabling" : "Omitting"));
1494 if (!PL_restartop) {
1495 DEBUG_x(dump_all());
1496 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
1497 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1501 #ifdef MACOS_TRADITIONAL
1502 PerlIO_printf(Perl_error_log, "%s syntax OK\n", MacPerl_MPWFileName(PL_origfilename));
1504 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
1508 if (PERLDB_SINGLE && PL_DBsingle)
1509 sv_setiv(PL_DBsingle, 1);
1511 call_list(oldscope, PL_initav);
1517 PL_op = PL_restartop;
1521 else if (PL_main_start) {
1522 CvDEPTH(PL_main_cv) = 1;
1523 PL_op = PL_main_start;
1533 =for apidoc p||get_sv
1535 Returns the SV of the specified Perl scalar. If C<create> is set and the
1536 Perl variable does not exist then it will be created. If C<create> is not
1537 set and the variable does not exist then NULL is returned.
1543 Perl_get_sv(pTHX_ const char *name, I32 create)
1547 if (name[1] == '\0' && !isALPHA(name[0])) {
1548 PADOFFSET tmp = find_threadsv(name);
1549 if (tmp != NOT_IN_PAD)
1550 return THREADSV(tmp);
1552 #endif /* USE_THREADS */
1553 gv = gv_fetchpv(name, create, SVt_PV);
1560 =for apidoc p||get_av
1562 Returns the AV of the specified Perl array. If C<create> is set and the
1563 Perl variable does not exist then it will be created. If C<create> is not
1564 set and the variable does not exist then NULL is returned.
1570 Perl_get_av(pTHX_ const char *name, I32 create)
1572 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1581 =for apidoc p||get_hv
1583 Returns the HV of the specified Perl hash. If C<create> is set and the
1584 Perl variable does not exist then it will be created. If C<create> is not
1585 set and the variable does not exist then NULL is returned.
1591 Perl_get_hv(pTHX_ const char *name, I32 create)
1593 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1602 =for apidoc p||get_cv
1604 Returns the CV of the specified Perl subroutine. If C<create> is set and
1605 the Perl subroutine does not exist then it will be declared (which has the
1606 same effect as saying C<sub name;>). If C<create> is not set and the
1607 subroutine does not exist then NULL is returned.
1613 Perl_get_cv(pTHX_ const char *name, I32 create)
1615 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
1616 /* XXX unsafe for threads if eval_owner isn't held */
1617 /* XXX this is probably not what they think they're getting.
1618 * It has the same effect as "sub name;", i.e. just a forward
1620 if (create && !GvCVu(gv))
1621 return newSUB(start_subparse(FALSE, 0),
1622 newSVOP(OP_CONST, 0, newSVpv(name,0)),
1630 /* Be sure to refetch the stack pointer after calling these routines. */
1633 =for apidoc p||call_argv
1635 Performs a callback to the specified Perl sub. See L<perlcall>.
1641 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
1643 /* See G_* flags in cop.h */
1644 /* null terminated arg list */
1651 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
1656 return call_pv(sub_name, flags);
1660 =for apidoc p||call_pv
1662 Performs a callback to the specified Perl sub. See L<perlcall>.
1668 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
1669 /* name of the subroutine */
1670 /* See G_* flags in cop.h */
1672 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
1676 =for apidoc p||call_method
1678 Performs a callback to the specified Perl method. The blessed object must
1679 be on the stack. See L<perlcall>.
1685 Perl_call_method(pTHX_ const char *methname, I32 flags)
1686 /* name of the subroutine */
1687 /* See G_* flags in cop.h */
1689 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
1692 /* May be called with any of a CV, a GV, or an SV containing the name. */
1694 =for apidoc p||call_sv
1696 Performs a callback to the Perl sub whose name is in the SV. See
1703 Perl_call_sv(pTHX_ SV *sv, I32 flags)
1704 /* See G_* flags in cop.h */
1707 LOGOP myop; /* fake syntax tree node */
1710 volatile I32 retval = 0;
1712 bool oldcatch = CATCH_GET;
1717 if (flags & G_DISCARD) {
1722 Zero(&myop, 1, LOGOP);
1723 myop.op_next = Nullop;
1724 if (!(flags & G_NOARGS))
1725 myop.op_flags |= OPf_STACKED;
1726 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1727 (flags & G_ARRAY) ? OPf_WANT_LIST :
1732 EXTEND(PL_stack_sp, 1);
1733 *++PL_stack_sp = sv;
1735 oldscope = PL_scopestack_ix;
1737 if (PERLDB_SUB && PL_curstash != PL_debstash
1738 /* Handle first BEGIN of -d. */
1739 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
1740 /* Try harder, since this may have been a sighandler, thus
1741 * curstash may be meaningless. */
1742 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
1743 && !(flags & G_NODEBUG))
1744 PL_op->op_private |= OPpENTERSUB_DB;
1746 if (flags & G_METHOD) {
1747 Zero(&method_op, 1, UNOP);
1748 method_op.op_next = PL_op;
1749 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1750 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
1751 PL_op = (OP*)&method_op;
1754 if (!(flags & G_EVAL)) {
1756 call_body((OP*)&myop, FALSE);
1757 retval = PL_stack_sp - (PL_stack_base + oldmark);
1758 CATCH_SET(oldcatch);
1761 myop.op_other = (OP*)&myop;
1763 /* we're trying to emulate pp_entertry() here */
1765 register PERL_CONTEXT *cx;
1766 I32 gimme = GIMME_V;
1771 push_return(Nullop);
1772 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
1774 PL_eval_root = PL_op; /* Only needed so that goto works right. */
1776 PL_in_eval = EVAL_INEVAL;
1777 if (flags & G_KEEPERR)
1778 PL_in_eval |= EVAL_KEEPERR;
1784 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1786 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1793 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1795 call_body((OP*)&myop, FALSE);
1797 retval = PL_stack_sp - (PL_stack_base + oldmark);
1798 if (!(flags & G_KEEPERR))
1805 /* my_exit() was called */
1806 PL_curstash = PL_defstash;
1809 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1810 Perl_croak(aTHX_ "Callback called exit");
1815 PL_op = PL_restartop;
1819 PL_stack_sp = PL_stack_base + oldmark;
1820 if (flags & G_ARRAY)
1824 *++PL_stack_sp = &PL_sv_undef;
1829 if (PL_scopestack_ix > oldscope) {
1833 register PERL_CONTEXT *cx;
1845 if (flags & G_DISCARD) {
1846 PL_stack_sp = PL_stack_base + oldmark;
1855 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1857 S_vcall_body(pTHX_ va_list args)
1859 OP *myop = va_arg(args, OP*);
1860 int is_eval = va_arg(args, int);
1862 call_body(myop, is_eval);
1868 S_call_body(pTHX_ OP *myop, int is_eval)
1870 if (PL_op == myop) {
1872 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
1874 PL_op = Perl_pp_entersub(aTHX); /* this does */
1880 /* Eval a string. The G_EVAL flag is always assumed. */
1883 =for apidoc p||eval_sv
1885 Tells Perl to C<eval> the string in the SV.
1891 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
1893 /* See G_* flags in cop.h */
1896 UNOP myop; /* fake syntax tree node */
1897 volatile I32 oldmark = SP - PL_stack_base;
1898 volatile I32 retval = 0;
1904 if (flags & G_DISCARD) {
1911 Zero(PL_op, 1, UNOP);
1912 EXTEND(PL_stack_sp, 1);
1913 *++PL_stack_sp = sv;
1914 oldscope = PL_scopestack_ix;
1916 if (!(flags & G_NOARGS))
1917 myop.op_flags = OPf_STACKED;
1918 myop.op_next = Nullop;
1919 myop.op_type = OP_ENTEREVAL;
1920 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1921 (flags & G_ARRAY) ? OPf_WANT_LIST :
1923 if (flags & G_KEEPERR)
1924 myop.op_flags |= OPf_SPECIAL;
1926 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1928 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1935 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1937 call_body((OP*)&myop,TRUE);
1939 retval = PL_stack_sp - (PL_stack_base + oldmark);
1940 if (!(flags & G_KEEPERR))
1947 /* my_exit() was called */
1948 PL_curstash = PL_defstash;
1951 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1952 Perl_croak(aTHX_ "Callback called exit");
1957 PL_op = PL_restartop;
1961 PL_stack_sp = PL_stack_base + oldmark;
1962 if (flags & G_ARRAY)
1966 *++PL_stack_sp = &PL_sv_undef;
1972 if (flags & G_DISCARD) {
1973 PL_stack_sp = PL_stack_base + oldmark;
1983 =for apidoc p||eval_pv
1985 Tells Perl to C<eval> the given string and return an SV* result.
1991 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
1994 SV* sv = newSVpv(p, 0);
1996 eval_sv(sv, G_SCALAR);
2003 if (croak_on_error && SvTRUE(ERRSV)) {
2005 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
2011 /* Require a module. */
2014 =for apidoc p||require_pv
2016 Tells Perl to C<require> the file named by the string argument. It is
2017 analogous to the Perl code C<eval "require '$file'">. It's even
2018 implemented that way; consider using Perl_load_module instead.
2023 Perl_require_pv(pTHX_ const char *pv)
2027 PUSHSTACKi(PERLSI_REQUIRE);
2029 sv = sv_newmortal();
2030 sv_setpv(sv, "require '");
2033 eval_sv(sv, G_DISCARD);
2039 Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
2043 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
2044 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
2048 S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
2050 /* This message really ought to be max 23 lines.
2051 * Removed -h because the user already knows that option. Others? */
2053 static char *usage_msg[] = {
2054 "-0[octal] specify record separator (\\0, if no argument)",
2055 "-a autosplit mode with -n or -p (splits $_ into @F)",
2056 "-C enable native wide character system interfaces",
2057 "-c check syntax only (runs BEGIN and CHECK blocks)",
2058 "-d[:debugger] run program under debugger",
2059 "-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2060 "-e 'command' one line of program (several -e's allowed, omit programfile)",
2061 "-F/pattern/ split() pattern for -a switch (//'s are optional)",
2062 "-i[extension] edit <> files in place (makes backup if extension supplied)",
2063 "-Idirectory specify @INC/#include directory (several -I's allowed)",
2064 "-l[octal] enable line ending processing, specifies line terminator",
2065 "-[mM][-]module execute `use/no module...' before executing program",
2066 "-n assume 'while (<>) { ... }' loop around program",
2067 "-p assume loop like -n but print line also, like sed",
2068 "-P run program through C preprocessor before compilation",
2069 "-s enable rudimentary parsing for switches after programfile",
2070 "-S look for programfile using PATH environment variable",
2071 "-T enable tainting checks",
2072 "-u dump core after parsing program",
2073 "-U allow unsafe operations",
2074 "-v print version, subversion (includes VERY IMPORTANT perl info)",
2075 "-V[:variable] print configuration summary (or a single Config.pm variable)",
2076 "-w enable many useful warnings (RECOMMENDED)",
2077 "-W enable all warnings",
2078 "-X disable all warnings",
2079 "-x[directory] strip off text before #!perl line and perhaps cd to directory",
2083 char **p = usage_msg;
2085 PerlIO_printf(PerlIO_stdout(),
2086 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2089 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
2092 /* This routine handles any switches that can be given during run */
2095 Perl_moreswitches(pTHX_ char *s)
2103 numlen = 0; /* disallow underscores */
2104 rschar = (U32)scan_oct(s, 4, &numlen);
2105 SvREFCNT_dec(PL_nrs);
2106 if (rschar & ~((U8)~0))
2107 PL_nrs = &PL_sv_undef;
2108 else if (!rschar && numlen >= 2)
2109 PL_nrs = newSVpvn("", 0);
2112 PL_nrs = newSVpvn(&ch, 1);
2117 PL_widesyscalls = TRUE;
2122 PL_splitstr = savepv(s + 1);
2136 /* The following permits -d:Mod to accepts arguments following an =
2137 in the fashion that -MSome::Mod does. */
2138 if (*s == ':' || *s == '=') {
2141 sv = newSVpv("use Devel::", 0);
2143 /* We now allow -d:Module=Foo,Bar */
2144 while(isALNUM(*s) || *s==':') ++s;
2146 sv_catpv(sv, start);
2148 sv_catpvn(sv, start, s-start);
2149 sv_catpv(sv, " split(/,/,q{");
2154 my_setenv("PERL5DB", SvPV(sv, PL_na));
2157 PL_perldb = PERLDB_ALL;
2165 if (isALPHA(s[1])) {
2166 /* if adding extra options, remember to update DEBUG_MASK */
2167 static char debopts[] = "psltocPmfrxuLHXDSTR";
2170 for (s++; *s && (d = strchr(debopts,*s)); s++)
2171 PL_debug |= 1 << (d - debopts);
2174 PL_debug = atoi(s+1);
2175 for (s++; isDIGIT(*s); s++) ;
2177 PL_debug |= DEBUG_TOP_FLAG;
2179 if (ckWARN_d(WARN_DEBUGGING))
2180 Perl_warner(aTHX_ WARN_DEBUGGING,
2181 "Recompile perl with -DDEBUGGING to use -D switch\n");
2182 for (s++; isALNUM(*s); s++) ;
2188 usage(PL_origargv[0]);
2192 Safefree(PL_inplace);
2193 PL_inplace = savepv(s+1);
2195 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
2198 if (*s == '-') /* Additional switches on #! line. */
2202 case 'I': /* -I handled both here and in parse_perl() */
2205 while (*s && isSPACE(*s))
2210 /* ignore trailing spaces (possibly followed by other switches) */
2212 for (e = p; *e && !isSPACE(*e); e++) ;
2216 } while (*p && *p != '-');
2217 e = savepvn(s, e-s);
2218 incpush(e, TRUE, TRUE);
2225 Perl_croak(aTHX_ "No directory specified for -I");
2231 SvREFCNT_dec(PL_ors_sv);
2235 PL_ors_sv = newSVpvn("\n",1);
2236 numlen = 0; /* disallow underscores */
2237 *SvPVX(PL_ors_sv) = (char)scan_oct(s, 3 + (*s == '0'), &numlen);
2241 if (RsPARA(PL_nrs)) {
2242 PL_ors_sv = newSVpvn("\n\n",2);
2245 PL_ors_sv = newSVsv(PL_nrs);
2250 forbid_setid("-M"); /* XXX ? */
2253 forbid_setid("-m"); /* XXX ? */
2258 /* -M-foo == 'no foo' */
2259 if (*s == '-') { use = "no "; ++s; }
2260 sv = newSVpv(use,0);
2262 /* We allow -M'Module qw(Foo Bar)' */
2263 while(isALNUM(*s) || *s==':') ++s;
2265 sv_catpv(sv, start);
2266 if (*(start-1) == 'm') {
2268 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
2269 sv_catpv( sv, " ()");
2273 Perl_croak(aTHX_ "Module name required with -%c option",
2275 sv_catpvn(sv, start, s-start);
2276 sv_catpv(sv, " split(/,/,q{");
2282 PL_preambleav = newAV();
2283 av_push(PL_preambleav, sv);
2286 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
2298 PL_doswitches = TRUE;
2303 Perl_croak(aTHX_ "Too late for \"-T\" option");
2307 #ifdef MACOS_TRADITIONAL
2308 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2310 PL_do_undump = TRUE;
2319 PerlIO_printf(PerlIO_stdout(),
2320 Perl_form(aTHX_ "\nThis is perl, v%"VDf" built for %s",
2321 PL_patchlevel, ARCHNAME));
2323 /* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
2324 PerlIO_printf(PerlIO_stdout(),
2325 Perl_form(aTHX_ "\nThis is perl, version %vd\n", PL_patchlevel));
2326 PerlIO_printf(PerlIO_stdout(),
2327 Perl_form(aTHX_ " built under %s at %s %s\n",
2328 OSNAME, __DATE__, __TIME__));
2329 PerlIO_printf(PerlIO_stdout(),
2330 Perl_form(aTHX_ " OS Specific Release: %s\n",
2334 #if defined(LOCAL_PATCH_COUNT)
2335 if (LOCAL_PATCH_COUNT > 0)
2336 PerlIO_printf(PerlIO_stdout(),
2337 "\n(with %d registered patch%s, "
2338 "see perl -V for more detail)",
2339 (int)LOCAL_PATCH_COUNT,
2340 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
2343 PerlIO_printf(PerlIO_stdout(),
2344 "\n\nCopyright 1987-2001, Larry Wall\n");
2345 #ifdef MACOS_TRADITIONAL
2346 PerlIO_printf(PerlIO_stdout(),
2347 "\nMac OS port Copyright (c) 1991-2001, Matthias Neeracher\n");
2350 PerlIO_printf(PerlIO_stdout(),
2351 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
2354 PerlIO_printf(PerlIO_stdout(),
2355 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2356 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
2359 PerlIO_printf(PerlIO_stdout(),
2360 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2361 "Version 5 port Copyright (c) 1994-1999, Andreas Kaiser, Ilya Zakharevich\n");
2364 PerlIO_printf(PerlIO_stdout(),
2365 "atariST series port, ++jrb bammi@cadence.com\n");
2368 PerlIO_printf(PerlIO_stdout(),
2369 "BeOS port Copyright Tom Spindler, 1997-1999\n");
2372 PerlIO_printf(PerlIO_stdout(),
2373 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2001\n");
2376 PerlIO_printf(PerlIO_stdout(),
2377 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
2380 PerlIO_printf(PerlIO_stdout(),
2381 "Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n");
2384 PerlIO_printf(PerlIO_stdout(),
2385 "VM/ESA port by Neale Ferguson, 1998-1999\n");
2388 PerlIO_printf(PerlIO_stdout(),
2389 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
2392 PerlIO_printf(PerlIO_stdout(),
2393 "MiNT port by Guido Flohr, 1997-1999\n");
2396 PerlIO_printf(PerlIO_stdout(),
2397 "EPOC port by Olaf Flebbe, 1999-2000\n");
2399 #ifdef BINARY_BUILD_NOTICE
2400 BINARY_BUILD_NOTICE;
2402 PerlIO_printf(PerlIO_stdout(),
2404 Perl may be copied only under the terms of either the Artistic License or the\n\
2405 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
2406 Complete documentation for Perl, including FAQ lists, should be found on\n\
2407 this system using `man perl' or `perldoc perl'. If you have access to the\n\
2408 Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
2411 if (! (PL_dowarn & G_WARN_ALL_MASK))
2412 PL_dowarn |= G_WARN_ON;
2416 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
2417 PL_compiling.cop_warnings = pWARN_ALL ;
2421 PL_dowarn = G_WARN_ALL_OFF;
2422 PL_compiling.cop_warnings = pWARN_NONE ;
2427 if (s[1] == '-') /* Additional switches on #! line. */
2432 #if defined(WIN32) || !defined(PERL_STRICT_CR)
2438 #ifdef ALTERNATE_SHEBANG
2439 case 'S': /* OS/2 needs -S on "extproc" line. */
2447 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
2452 /* compliments of Tom Christiansen */
2454 /* unexec() can be found in the Gnu emacs distribution */
2455 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
2458 Perl_my_unexec(pTHX)
2466 prog = newSVpv(BIN_EXP, 0);
2467 sv_catpv(prog, "/perl");
2468 file = newSVpv(PL_origfilename, 0);
2469 sv_catpv(file, ".perldump");
2471 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2472 /* unexec prints msg to stderr in case of failure */
2473 PerlProc_exit(status);
2476 # include <lib$routines.h>
2477 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
2479 ABORT(); /* for use with undump */
2484 /* initialize curinterp */
2489 #ifdef PERL_OBJECT /* XXX kludge */
2492 PL_chopset = " \n-"; \
2493 PL_copline = NOLINE; \
2494 PL_curcop = &PL_compiling;\
2495 PL_curcopdb = NULL; \
2497 PL_dumpindent = 4; \
2498 PL_laststatval = -1; \
2499 PL_laststype = OP_STAT; \
2500 PL_maxscream = -1; \
2501 PL_maxsysfd = MAXSYSFD; \
2502 PL_statname = Nullsv; \
2503 PL_tmps_floor = -1; \
2505 PL_op_mask = NULL; \
2506 PL_laststatval = -1; \
2507 PL_laststype = OP_STAT; \
2508 PL_mess_sv = Nullsv; \
2509 PL_splitstr = " "; \
2510 PL_generation = 100; \
2511 PL_exitlist = NULL; \
2512 PL_exitlistlen = 0; \
2514 PL_in_clean_objs = FALSE; \
2515 PL_in_clean_all = FALSE; \
2516 PL_profiledata = NULL; \
2518 PL_rsfp_filters = Nullav; \
2523 # ifdef MULTIPLICITY
2524 # define PERLVAR(var,type)
2525 # define PERLVARA(var,n,type)
2526 # if defined(PERL_IMPLICIT_CONTEXT)
2527 # if defined(USE_THREADS)
2528 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2529 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2530 # else /* !USE_THREADS */
2531 # define PERLVARI(var,type,init) aTHX->var = init;
2532 # define PERLVARIC(var,type,init) aTHX->var = init;
2533 # endif /* USE_THREADS */
2535 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2536 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2538 # include "intrpvar.h"
2539 # ifndef USE_THREADS
2540 # include "thrdvar.h"
2547 # define PERLVAR(var,type)
2548 # define PERLVARA(var,n,type)
2549 # define PERLVARI(var,type,init) PL_##var = init;
2550 # define PERLVARIC(var,type,init) PL_##var = init;
2551 # include "intrpvar.h"
2552 # ifndef USE_THREADS
2553 # include "thrdvar.h"
2565 S_init_main_stash(pTHX)
2569 /* Note that strtab is a rather special HV. Assumptions are made
2570 about not iterating on it, and not adding tie magic to it.
2571 It is properly deallocated in perl_destruct() */
2572 PL_strtab = newHV();
2574 MUTEX_INIT(&PL_strtab_mutex);
2576 HvSHAREKEYS_off(PL_strtab); /* mandatory */
2577 hv_ksplit(PL_strtab, 512);
2579 PL_curstash = PL_defstash = newHV();
2580 PL_curstname = newSVpvn("main",4);
2581 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2582 SvREFCNT_dec(GvHV(gv));
2583 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
2585 HvNAME(PL_defstash) = savepv("main");
2586 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2587 GvMULTI_on(PL_incgv);
2588 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2589 GvMULTI_on(PL_hintgv);
2590 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2591 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2592 GvMULTI_on(PL_errgv);
2593 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2594 GvMULTI_on(PL_replgv);
2595 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
2596 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2597 sv_setpvn(ERRSV, "", 0);
2598 PL_curstash = PL_defstash;
2599 CopSTASH_set(&PL_compiling, PL_defstash);
2600 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
2601 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
2602 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
2603 /* We must init $/ before switches are processed. */
2604 sv_setpvn(get_sv("/", TRUE), "\n", 1);
2608 S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
2613 PL_origfilename = savepv("-e");
2616 /* if find_script() returns, it returns a malloc()-ed value */
2617 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
2619 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2620 char *s = scriptname + 8;
2621 *fdscript = atoi(s);
2625 scriptname = savepv(s + 1);
2626 Safefree(PL_origfilename);
2627 PL_origfilename = scriptname;
2633 Safefree(CopFILE(PL_curcop));
2635 SvREFCNT_dec(CopFILEGV(PL_curcop));
2637 CopFILE_set(PL_curcop, PL_origfilename);
2638 if (strEQ(PL_origfilename,"-"))
2640 if (*fdscript >= 0) {
2641 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
2642 #if defined(HAS_FCNTL) && defined(F_SETFD)
2644 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2647 else if (PL_preprocess) {
2648 char *cpp_cfg = CPPSTDIN;
2649 SV *cpp = newSVpvn("",0);
2650 SV *cmd = NEWSV(0,0);
2652 if (strEQ(cpp_cfg, "cppstdin"))
2653 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
2654 sv_catpv(cpp, cpp_cfg);
2656 sv_catpvn(sv, "-I", 2);
2657 sv_catpv(sv,PRIVLIB_EXP);
2659 DEBUG_P(PerlIO_printf(Perl_debug_log,
2660 "PL_preprocess: scriptname=\"%s\", cpp=\"%s\", sv=\"%s\", CPPMINUS=\"%s\"\n",
2661 scriptname, SvPVX (cpp), SvPVX (sv), CPPMINUS));
2662 #if defined(MSDOS) || defined(WIN32)
2663 Perl_sv_setpvf(aTHX_ cmd, "\
2664 sed %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" -C %"SVf" %s",
2676 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
2679 Perl_sv_setpvf(aTHX_ cmd, "\
2680 %s %s -e '/^[^#]/b' \
2681 -e '/^#[ ]*include[ ]/b' \
2682 -e '/^#[ ]*define[ ]/b' \
2683 -e '/^#[ ]*if[ ]/b' \
2684 -e '/^#[ ]*ifdef[ ]/b' \
2685 -e '/^#[ ]*ifndef[ ]/b' \
2686 -e '/^#[ ]*else/b' \
2687 -e '/^#[ ]*elif[ ]/b' \
2688 -e '/^#[ ]*undef[ ]/b' \
2689 -e '/^#[ ]*endif/b' \
2691 %s | %"SVf" %"SVf" %s",
2693 Perl_sv_setpvf(aTHX_ cmd, "\
2694 %s %s -e '/^[^#]/b' \
2695 -e '/^#[ ]*include[ ]/b' \
2696 -e '/^#[ ]*define[ ]/b' \
2697 -e '/^#[ ]*if[ ]/b' \
2698 -e '/^#[ ]*ifdef[ ]/b' \
2699 -e '/^#[ ]*ifndef[ ]/b' \
2700 -e '/^#[ ]*else/b' \
2701 -e '/^#[ ]*elif[ ]/b' \
2702 -e '/^#[ ]*undef[ ]/b' \
2703 -e '/^#[ ]*endif/b' \
2705 %s | %"SVf" -C %"SVf" %s",
2712 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
2714 scriptname, cpp, sv, CPPMINUS);
2715 PL_doextract = FALSE;
2716 #ifdef IAMSUID /* actually, this is caught earlier */
2717 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
2719 (void)seteuid(PL_uid); /* musn't stay setuid root */
2722 (void)setreuid((Uid_t)-1, PL_uid);
2724 #ifdef HAS_SETRESUID
2725 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
2727 PerlProc_setuid(PL_uid);
2731 if (PerlProc_geteuid() != PL_uid)
2732 Perl_croak(aTHX_ "Can't do seteuid!\n");
2734 #endif /* IAMSUID */
2735 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
2739 else if (!*scriptname) {
2740 forbid_setid("program input from stdin");
2741 PL_rsfp = PerlIO_stdin();
2744 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
2745 #if defined(HAS_FCNTL) && defined(F_SETFD)
2747 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2752 #ifndef IAMSUID /* in case script is not readable before setuid */
2754 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
2755 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2758 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
2759 (int)PERL_REVISION, (int)PERL_VERSION,
2760 (int)PERL_SUBVERSION), PL_origargv);
2761 Perl_croak(aTHX_ "Can't do setuid\n");
2767 Perl_croak(aTHX_ "Can't open perl script: %s\n",
2770 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
2771 CopFILE(PL_curcop), Strerror(errno));
2777 * I_SYSSTATVFS HAS_FSTATVFS
2779 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
2780 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2781 * here so that metaconfig picks them up. */
2785 S_fd_on_nosuid_fs(pTHX_ int fd)
2787 int check_okay = 0; /* able to do all the required sys/libcalls */
2788 int on_nosuid = 0; /* the fd is on a nosuid fs */
2790 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
2791 * fstatvfs() is UNIX98.
2792 * fstatfs() is 4.3 BSD.
2793 * ustat()+getmnt() is pre-4.3 BSD.
2794 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2795 * an irrelevant filesystem while trying to reach the right one.
2798 #undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2800 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2801 defined(HAS_FSTATVFS)
2802 # define FD_ON_NOSUID_CHECK_OKAY
2803 struct statvfs stfs;
2805 check_okay = fstatvfs(fd, &stfs) == 0;
2806 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
2807 # endif /* fstatvfs */
2809 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2810 defined(PERL_MOUNT_NOSUID) && \
2811 defined(HAS_FSTATFS) && \
2812 defined(HAS_STRUCT_STATFS) && \
2813 defined(HAS_STRUCT_STATFS_F_FLAGS)
2814 # define FD_ON_NOSUID_CHECK_OKAY
2817 check_okay = fstatfs(fd, &stfs) == 0;
2818 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
2819 # endif /* fstatfs */
2821 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2822 defined(PERL_MOUNT_NOSUID) && \
2823 defined(HAS_FSTAT) && \
2824 defined(HAS_USTAT) && \
2825 defined(HAS_GETMNT) && \
2826 defined(HAS_STRUCT_FS_DATA) && \
2828 # define FD_ON_NOSUID_CHECK_OKAY
2831 if (fstat(fd, &fdst) == 0) {
2833 if (ustat(fdst.st_dev, &us) == 0) {
2835 /* NOSTAT_ONE here because we're not examining fields which
2836 * vary between that case and STAT_ONE. */
2837 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
2838 size_t cmplen = sizeof(us.f_fname);
2839 if (sizeof(fsd.fd_req.path) < cmplen)
2840 cmplen = sizeof(fsd.fd_req.path);
2841 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2842 fdst.st_dev == fsd.fd_req.dev) {
2844 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2850 # endif /* fstat+ustat+getmnt */
2852 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2853 defined(HAS_GETMNTENT) && \
2854 defined(HAS_HASMNTOPT) && \
2855 defined(MNTOPT_NOSUID)
2856 # define FD_ON_NOSUID_CHECK_OKAY
2857 FILE *mtab = fopen("/etc/mtab", "r");
2858 struct mntent *entry;
2859 struct stat stb, fsb;
2861 if (mtab && (fstat(fd, &stb) == 0)) {
2862 while (entry = getmntent(mtab)) {
2863 if (stat(entry->mnt_dir, &fsb) == 0
2864 && fsb.st_dev == stb.st_dev)
2866 /* found the filesystem */
2868 if (hasmntopt(entry, MNTOPT_NOSUID))
2871 } /* A single fs may well fail its stat(). */
2876 # endif /* getmntent+hasmntopt */
2879 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
2882 #endif /* IAMSUID */
2885 S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
2891 /* do we need to emulate setuid on scripts? */
2893 /* This code is for those BSD systems that have setuid #! scripts disabled
2894 * in the kernel because of a security problem. Merely defining DOSUID
2895 * in perl will not fix that problem, but if you have disabled setuid
2896 * scripts in the kernel, this will attempt to emulate setuid and setgid
2897 * on scripts that have those now-otherwise-useless bits set. The setuid
2898 * root version must be called suidperl or sperlN.NNN. If regular perl
2899 * discovers that it has opened a setuid script, it calls suidperl with
2900 * the same argv that it had. If suidperl finds that the script it has
2901 * just opened is NOT setuid root, it sets the effective uid back to the
2902 * uid. We don't just make perl setuid root because that loses the
2903 * effective uid we had before invoking perl, if it was different from the
2906 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2907 * be defined in suidperl only. suidperl must be setuid root. The
2908 * Configure script will set this up for you if you want it.
2914 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
2915 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
2916 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
2921 #ifndef HAS_SETREUID
2922 /* On this access check to make sure the directories are readable,
2923 * there is actually a small window that the user could use to make
2924 * filename point to an accessible directory. So there is a faint
2925 * chance that someone could execute a setuid script down in a
2926 * non-accessible directory. I don't know what to do about that.
2927 * But I don't think it's too important. The manual lies when
2928 * it says access() is useful in setuid programs.
2930 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
2931 Perl_croak(aTHX_ "Permission denied");
2933 /* If we can swap euid and uid, then we can determine access rights
2934 * with a simple stat of the file, and then compare device and
2935 * inode to make sure we did stat() on the same file we opened.
2936 * Then we just have to make sure he or she can execute it.
2939 struct stat tmpstatbuf;
2943 setreuid(PL_euid,PL_uid) < 0
2946 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
2949 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
2950 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
2951 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
2952 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
2953 #if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
2954 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
2955 Perl_croak(aTHX_ "Permission denied");
2957 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
2958 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
2959 (void)PerlIO_close(PL_rsfp);
2960 Perl_croak(aTHX_ "Permission denied\n");
2964 setreuid(PL_uid,PL_euid) < 0
2966 # if defined(HAS_SETRESUID)
2967 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
2970 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
2971 Perl_croak(aTHX_ "Can't reswap uid and euid");
2972 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
2973 Perl_croak(aTHX_ "Permission denied\n");
2975 #endif /* HAS_SETREUID */
2976 #endif /* IAMSUID */
2978 if (!S_ISREG(PL_statbuf.st_mode))
2979 Perl_croak(aTHX_ "Permission denied");
2980 if (PL_statbuf.st_mode & S_IWOTH)
2981 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
2982 PL_doswitches = FALSE; /* -s is insecure in suid */
2983 CopLINE_inc(PL_curcop);
2984 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
2985 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
2986 Perl_croak(aTHX_ "No #! line");
2987 s = SvPV(PL_linestr,n_a)+2;
2989 while (!isSPACE(*s)) s++;
2990 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
2991 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
2992 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
2993 Perl_croak(aTHX_ "Not a perl script");
2994 while (*s == ' ' || *s == '\t') s++;
2996 * #! arg must be what we saw above. They can invoke it by
2997 * mentioning suidperl explicitly, but they may not add any strange
2998 * arguments beyond what #! says if they do invoke suidperl that way.
3000 len = strlen(validarg);
3001 if (strEQ(validarg," PHOOEY ") ||
3002 strnNE(s,validarg,len) || !isSPACE(s[len]))
3003 Perl_croak(aTHX_ "Args must match #! line");
3006 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
3007 PL_euid == PL_statbuf.st_uid)
3009 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3010 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3011 #endif /* IAMSUID */
3013 if (PL_euid) { /* oops, we're not the setuid root perl */
3014 (void)PerlIO_close(PL_rsfp);
3017 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
3018 (int)PERL_REVISION, (int)PERL_VERSION,
3019 (int)PERL_SUBVERSION), PL_origargv);
3021 Perl_croak(aTHX_ "Can't do setuid\n");
3024 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
3026 (void)setegid(PL_statbuf.st_gid);
3029 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
3031 #ifdef HAS_SETRESGID
3032 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
3034 PerlProc_setgid(PL_statbuf.st_gid);
3038 if (PerlProc_getegid() != PL_statbuf.st_gid)
3039 Perl_croak(aTHX_ "Can't do setegid!\n");
3041 if (PL_statbuf.st_mode & S_ISUID) {
3042 if (PL_statbuf.st_uid != PL_euid)
3044 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
3047 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
3049 #ifdef HAS_SETRESUID
3050 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
3052 PerlProc_setuid(PL_statbuf.st_uid);
3056 if (PerlProc_geteuid() != PL_statbuf.st_uid)
3057 Perl_croak(aTHX_ "Can't do seteuid!\n");
3059 else if (PL_uid) { /* oops, mustn't run as root */
3061 (void)seteuid((Uid_t)PL_uid);
3064 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
3066 #ifdef HAS_SETRESUID
3067 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
3069 PerlProc_setuid((Uid_t)PL_uid);
3073 if (PerlProc_geteuid() != PL_uid)
3074 Perl_croak(aTHX_ "Can't do seteuid!\n");
3077 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
3078 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
3081 else if (PL_preprocess)
3082 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
3083 else if (fdscript >= 0)
3084 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
3086 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
3088 /* We absolutely must clear out any saved ids here, so we */
3089 /* exec the real perl, substituting fd script for scriptname. */
3090 /* (We pass script name as "subdir" of fd, which perl will grok.) */
3091 PerlIO_rewind(PL_rsfp);
3092 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
3093 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3094 if (!PL_origargv[which])
3095 Perl_croak(aTHX_ "Permission denied");
3096 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
3097 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
3098 #if defined(HAS_FCNTL) && defined(F_SETFD)
3099 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
3101 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
3102 (int)PERL_REVISION, (int)PERL_VERSION,
3103 (int)PERL_SUBVERSION), PL_origargv);/* try again */
3104 Perl_croak(aTHX_ "Can't do setuid\n");
3105 #endif /* IAMSUID */
3107 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
3108 #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
3109 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3110 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3112 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3115 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3116 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3117 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3118 /* not set-id, must be wrapped */
3124 S_find_beginning(pTHX)
3126 register char *s, *s2;
3128 /* skip forward in input to the real script? */
3131 #ifdef MACOS_TRADITIONAL
3132 /* Since the Mac OS does not honor #! arguments for us, we do it ourselves */
3134 while (PL_doextract || gMacPerl_AlwaysExtract) {
3135 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3136 if (!gMacPerl_AlwaysExtract)
3137 Perl_croak(aTHX_ "No Perl script found in input\n");
3139 if (PL_doextract) /* require explicit override ? */
3140 if (!OverrideExtract(PL_origfilename))
3141 Perl_croak(aTHX_ "User aborted script\n");
3143 PL_doextract = FALSE;
3145 /* Pater peccavi, file does not have #! */
3146 PerlIO_rewind(PL_rsfp);
3151 while (PL_doextract) {
3152 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
3153 Perl_croak(aTHX_ "No Perl script found in input\n");
3156 if (*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))) {
3157 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3158 PL_doextract = FALSE;
3159 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3161 while (*s == ' ' || *s == '\t') s++;
3163 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3164 if (strnEQ(s2-4,"perl",4))
3166 while ((s = moreswitches(s)))
3169 #ifdef MACOS_TRADITIONAL
3180 PL_uid = PerlProc_getuid();
3181 PL_euid = PerlProc_geteuid();
3182 PL_gid = PerlProc_getgid();
3183 PL_egid = PerlProc_getegid();
3185 PL_uid |= PL_gid << 16;
3186 PL_euid |= PL_egid << 16;
3188 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3192 S_forbid_setid(pTHX_ char *s)
3194 if (PL_euid != PL_uid)
3195 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3196 if (PL_egid != PL_gid)
3197 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
3201 Perl_init_debugger(pTHX)
3203 HV *ostash = PL_curstash;
3205 PL_curstash = PL_debstash;
3206 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3207 AvREAL_off(PL_dbargs);
3208 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3209 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3210 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
3211 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3212 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
3213 sv_setiv(PL_DBsingle, 0);
3214 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
3215 sv_setiv(PL_DBtrace, 0);
3216 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
3217 sv_setiv(PL_DBsignal, 0);
3218 PL_curstash = ostash;
3221 #ifndef STRESS_REALLOC
3222 #define REASONABLE(size) (size)
3224 #define REASONABLE(size) (1) /* unreasonable */
3228 Perl_init_stacks(pTHX)
3230 /* start with 128-item stack and 8K cxstack */
3231 PL_curstackinfo = new_stackinfo(REASONABLE(128),
3232 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3233 PL_curstackinfo->si_type = PERLSI_MAIN;
3234 PL_curstack = PL_curstackinfo->si_stack;
3235 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
3237 PL_stack_base = AvARRAY(PL_curstack);
3238 PL_stack_sp = PL_stack_base;
3239 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
3241 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3244 PL_tmps_max = REASONABLE(128);
3246 New(54,PL_markstack,REASONABLE(32),I32);
3247 PL_markstack_ptr = PL_markstack;
3248 PL_markstack_max = PL_markstack + REASONABLE(32);
3252 New(54,PL_scopestack,REASONABLE(32),I32);
3253 PL_scopestack_ix = 0;
3254 PL_scopestack_max = REASONABLE(32);
3256 New(54,PL_savestack,REASONABLE(128),ANY);
3257 PL_savestack_ix = 0;
3258 PL_savestack_max = REASONABLE(128);
3260 New(54,PL_retstack,REASONABLE(16),OP*);
3262 PL_retstack_max = REASONABLE(16);
3270 while (PL_curstackinfo->si_next)
3271 PL_curstackinfo = PL_curstackinfo->si_next;
3272 while (PL_curstackinfo) {
3273 PERL_SI *p = PL_curstackinfo->si_prev;
3274 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3275 Safefree(PL_curstackinfo->si_cxstack);
3276 Safefree(PL_curstackinfo);
3277 PL_curstackinfo = p;
3279 Safefree(PL_tmps_stack);
3280 Safefree(PL_markstack);
3281 Safefree(PL_scopestack);
3282 Safefree(PL_savestack);
3283 Safefree(PL_retstack);
3287 static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */
3298 lex_start(PL_linestr);
3300 PL_subname = newSVpvn("main",4);
3304 S_init_predump_symbols(pTHX)
3309 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3310 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3311 GvMULTI_on(PL_stdingv);
3312 io = GvIOp(PL_stdingv);
3313 IoTYPE(io) = IoTYPE_RDONLY;
3314 IoIFP(io) = PerlIO_stdin();
3315 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
3317 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3319 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
3322 IoTYPE(io) = IoTYPE_WRONLY;
3323 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
3325 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
3327 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3329 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3330 GvMULTI_on(PL_stderrgv);
3331 io = GvIOp(PL_stderrgv);
3332 IoTYPE(io) = IoTYPE_WRONLY;
3333 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
3334 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
3336 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3338 PL_statname = NEWSV(66,0); /* last filename we did stat on */
3341 Safefree(PL_osname);
3342 PL_osname = savepv(OSNAME);
3346 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
3351 #ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3352 char **dup_env_base = 0;
3353 int dup_env_count = 0;
3356 argc--,argv++; /* skip name of script */
3357 if (PL_doswitches) {
3358 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3361 if (argv[0][1] == '-' && !argv[0][2]) {
3365 if ((s = strchr(argv[0], '='))) {
3367 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
3370 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
3373 PL_toptarget = NEWSV(0,0);
3374 sv_upgrade(PL_toptarget, SVt_PVFM);
3375 sv_setpvn(PL_toptarget, "", 0);
3376 PL_bodytarget = NEWSV(0,0);
3377 sv_upgrade(PL_bodytarget, SVt_PVFM);
3378 sv_setpvn(PL_bodytarget, "", 0);
3379 PL_formtarget = PL_bodytarget;
3382 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
3383 #ifdef MACOS_TRADITIONAL
3384 /* $0 is not majick on a Mac */
3385 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3387 sv_setpv(GvSV(tmpgv),PL_origfilename);
3388 magicname("0", "0", 1);
3391 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV)))
3393 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
3395 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
3397 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3398 GvMULTI_on(PL_argvgv);
3399 (void)gv_AVadd(PL_argvgv);
3400 av_clear(GvAVn(PL_argvgv));
3401 for (; argc > 0; argc--,argv++) {
3402 SV *sv = newSVpv(argv[0],0);
3403 av_push(GvAVn(PL_argvgv),sv);
3404 if (PL_widesyscalls)
3405 (void)sv_utf8_decode(sv);
3408 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
3410 GvMULTI_on(PL_envgv);
3411 hv = GvHVn(PL_envgv);
3412 hv_magic(hv, Nullgv, PERL_MAGIC_env);
3413 #ifdef USE_ENVIRON_ARRAY
3414 /* Note that if the supplied env parameter is actually a copy
3415 of the global environ then it may now point to free'd memory
3416 if the environment has been modified since. To avoid this
3417 problem we treat env==NULL as meaning 'use the default'
3422 environ[0] = Nullch;
3423 #ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3426 for (env_base = env; *env; env++)
3428 if ((dup_env_base = (char **)
3429 safesysmalloc( sizeof(char *) * (dup_env_count+1) ))) {
3431 for (env = env_base, dup_env = dup_env_base;
3434 /* With environ one needs to use safesysmalloc(). */
3435 *dup_env = safesysmalloc(strlen(*env) + 1);
3436 (void)strcpy(*dup_env, *env);
3442 #endif /* NEED_ENVIRON_DUP_FOR_MODIFY */
3444 for (; *env; env++) {
3445 if (!(s = strchr(*env,'=')))
3451 sv = newSVpv(s--,0);
3452 (void)hv_store(hv, *env, s - *env, sv, 0);
3455 #ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3458 for (dup_env = dup_env_base; *dup_env; dup_env++)
3459 safesysfree(*dup_env);
3460 safesysfree(dup_env_base);
3462 #endif /* NEED_ENVIRON_DUP_FOR_MODIFY */
3463 #endif /* USE_ENVIRON_ARRAY */
3466 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
3467 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
3471 S_init_perllib(pTHX)
3476 s = PerlEnv_getenv("PERL5LIB");
3478 incpush(s, TRUE, TRUE);
3480 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE);
3482 /* Treat PERL5?LIB as a possible search list logical name -- the
3483 * "natural" VMS idiom for a Unix path string. We allow each
3484 * element to be a set of |-separated directories for compatibility.
3488 if (my_trnlnm("PERL5LIB",buf,0))
3489 do { incpush(buf,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
3491 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE);
3495 /* Use the ~-expanded versions of APPLLIB (undocumented),
3496 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
3499 incpush(APPLLIB_EXP, TRUE, TRUE);
3503 incpush(ARCHLIB_EXP, FALSE, FALSE);
3505 #ifdef MACOS_TRADITIONAL
3507 struct stat tmpstatbuf;
3508 SV * privdir = NEWSV(55, 0);
3509 char * macperl = PerlEnv_getenv("MACPERL");
3514 Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl);
3515 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3516 incpush(SvPVX(privdir), TRUE, FALSE);
3517 Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl);
3518 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3519 incpush(SvPVX(privdir), TRUE, FALSE);
3521 SvREFCNT_dec(privdir);
3524 incpush(":", FALSE, FALSE);
3527 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
3530 incpush(PRIVLIB_EXP, TRUE, FALSE);
3532 incpush(PRIVLIB_EXP, FALSE, FALSE);
3536 /* sitearch is always relative to sitelib on Windows for
3537 * DLL-based path intuition to work correctly */
3538 # if !defined(WIN32)
3539 incpush(SITEARCH_EXP, FALSE, FALSE);
3545 incpush(SITELIB_EXP, TRUE, FALSE); /* this picks up sitearch as well */
3547 incpush(SITELIB_EXP, FALSE, FALSE);
3551 #ifdef SITELIB_STEM /* Search for version-specific dirs below here */
3552 incpush(SITELIB_STEM, FALSE, TRUE);
3555 #ifdef PERL_VENDORARCH_EXP
3556 /* vendorarch is always relative to vendorlib on Windows for
3557 * DLL-based path intuition to work correctly */
3558 # if !defined(WIN32)
3559 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE);
3563 #ifdef PERL_VENDORLIB_EXP
3565 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE); /* this picks up vendorarch as well */
3567 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE);
3571 #ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
3572 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE);
3575 #ifdef PERL_OTHERLIBDIRS
3576 incpush(PERL_OTHERLIBDIRS, TRUE, TRUE);
3580 incpush(".", FALSE, FALSE);
3581 #endif /* MACOS_TRADITIONAL */
3584 #if defined(DOSISH) || defined(EPOC)
3585 # define PERLLIB_SEP ';'
3588 # define PERLLIB_SEP '|'
3590 # if defined(MACOS_TRADITIONAL)
3591 # define PERLLIB_SEP ','
3593 # define PERLLIB_SEP ':'
3597 #ifndef PERLLIB_MANGLE
3598 # define PERLLIB_MANGLE(s,n) (s)
3602 S_incpush(pTHX_ char *p, int addsubdirs, int addoldvers)
3604 SV *subdir = Nullsv;
3609 if (addsubdirs || addoldvers) {
3610 subdir = sv_newmortal();
3613 /* Break at all separators */
3615 SV *libdir = NEWSV(55,0);
3618 /* skip any consecutive separators */
3619 while ( *p == PERLLIB_SEP ) {
3620 /* Uncomment the next line for PATH semantics */
3621 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
3625 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
3626 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
3631 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
3632 p = Nullch; /* break out */
3634 #ifdef MACOS_TRADITIONAL
3635 if (!strchr(SvPVX(libdir), ':'))
3636 sv_insert(libdir, 0, 0, ":", 1);
3637 if (SvPVX(libdir)[SvCUR(libdir)-1] != ':')
3638 sv_catpv(libdir, ":");
3642 * BEFORE pushing libdir onto @INC we may first push version- and
3643 * archname-specific sub-directories.
3645 if (addsubdirs || addoldvers) {
3646 #ifdef PERL_INC_VERSION_LIST
3647 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
3648 const char *incverlist[] = { PERL_INC_VERSION_LIST };
3649 const char **incver;
3651 struct stat tmpstatbuf;
3656 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
3658 while (unix[len-1] == '/') len--; /* Cosmetic */
3659 sv_usepvn(libdir,unix,len);
3662 PerlIO_printf(Perl_error_log,
3663 "Failed to unixify @INC element \"%s\"\n",
3667 #ifdef MACOS_TRADITIONAL
3668 #define PERL_AV_SUFFIX_FMT ""
3669 #define PERL_ARCH_FMT "%s:"
3670 #define PERL_ARCH_FMT_PATH PERL_FS_VER_FMT PERL_AV_SUFFIX_FMT
3672 #define PERL_AV_SUFFIX_FMT "/"
3673 #define PERL_ARCH_FMT "/%s"
3674 #define PERL_ARCH_FMT_PATH PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT
3676 /* .../version/archname if -d .../version/archname */
3677 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH PERL_ARCH_FMT,
3679 (int)PERL_REVISION, (int)PERL_VERSION,
3680 (int)PERL_SUBVERSION, ARCHNAME);
3681 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3682 S_ISDIR(tmpstatbuf.st_mode))
3683 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3685 /* .../version if -d .../version */
3686 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH, libdir,
3687 (int)PERL_REVISION, (int)PERL_VERSION,
3688 (int)PERL_SUBVERSION);
3689 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3690 S_ISDIR(tmpstatbuf.st_mode))
3691 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3693 /* .../archname if -d .../archname */
3694 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, ARCHNAME);
3695 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3696 S_ISDIR(tmpstatbuf.st_mode))
3697 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3700 #ifdef PERL_INC_VERSION_LIST
3702 for (incver = incverlist; *incver; incver++) {
3703 /* .../xxx if -d .../xxx */
3704 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, *incver);
3705 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3706 S_ISDIR(tmpstatbuf.st_mode))
3707 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3713 /* finally push this lib directory on the end of @INC */
3714 av_push(GvAVn(PL_incgv), libdir);
3719 STATIC struct perl_thread *
3720 S_init_main_thread(pTHX)
3722 #if !defined(PERL_IMPLICIT_CONTEXT)
3723 struct perl_thread *thr;
3727 Newz(53, thr, 1, struct perl_thread);
3728 PL_curcop = &PL_compiling;
3729 thr->interp = PERL_GET_INTERP;
3730 thr->cvcache = newHV();
3731 thr->threadsv = newAV();
3732 /* thr->threadsvp is set when find_threadsv is called */
3733 thr->specific = newAV();
3734 thr->flags = THRf_R_JOINABLE;
3735 MUTEX_INIT(&thr->mutex);
3736 /* Handcraft thrsv similarly to mess_sv */
3737 New(53, PL_thrsv, 1, SV);
3738 Newz(53, xpv, 1, XPV);
3739 SvFLAGS(PL_thrsv) = SVt_PV;
3740 SvANY(PL_thrsv) = (void*)xpv;
3741 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
3742 SvPVX(PL_thrsv) = (char*)thr;
3743 SvCUR_set(PL_thrsv, sizeof(thr));
3744 SvLEN_set(PL_thrsv, sizeof(thr));
3745 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
3746 thr->oursv = PL_thrsv;
3747 PL_chopset = " \n-";
3750 MUTEX_LOCK(&PL_threads_mutex);
3756 MUTEX_UNLOCK(&PL_threads_mutex);
3758 #ifdef HAVE_THREAD_INTERN
3759 Perl_init_thread_intern(thr);
3762 #ifdef SET_THREAD_SELF
3763 SET_THREAD_SELF(thr);
3765 thr->self = pthread_self();
3766 #endif /* SET_THREAD_SELF */
3770 * These must come after the thread self setting
3771 * because sv_setpvn does SvTAINT and the taint
3772 * fields thread selfness being set.
3774 PL_toptarget = NEWSV(0,0);
3775 sv_upgrade(PL_toptarget, SVt_PVFM);
3776 sv_setpvn(PL_toptarget, "", 0);
3777 PL_bodytarget = NEWSV(0,0);
3778 sv_upgrade(PL_bodytarget, SVt_PVFM);
3779 sv_setpvn(PL_bodytarget, "", 0);
3780 PL_formtarget = PL_bodytarget;
3781 thr->errsv = newSVpvn("", 0);
3782 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
3785 PL_peepp = MEMBER_TO_FPTR(Perl_peep);
3786 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3787 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3788 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3789 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3790 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
3792 PL_reginterp_cnt = 0;
3796 #endif /* USE_THREADS */
3799 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
3802 line_t oldline = CopLINE(PL_curcop);
3808 while (AvFILL(paramList) >= 0) {
3809 cv = (CV*)av_shift(paramList);
3810 if ((PL_minus_c & 0x10) && (paramList == PL_beginav)) {
3811 /* save PL_beginav for compiler */
3812 if (! PL_beginav_save)
3813 PL_beginav_save = newAV();
3814 av_push(PL_beginav_save, (SV*)cv);
3818 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3819 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_list_body), cv);
3825 #ifndef PERL_FLEXIBLE_EXCEPTIONS
3829 (void)SvPV(atsv, len);
3832 PL_curcop = &PL_compiling;
3833 CopLINE_set(PL_curcop, oldline);
3834 if (paramList == PL_beginav)
3835 sv_catpv(atsv, "BEGIN failed--compilation aborted");
3837 Perl_sv_catpvf(aTHX_ atsv,
3838 "%s failed--call queue aborted",
3839 paramList == PL_checkav ? "CHECK"
3840 : paramList == PL_initav ? "INIT"
3842 while (PL_scopestack_ix > oldscope)
3845 Perl_croak(aTHX_ "%s", SvPVx(atsv, n_a));
3852 /* my_exit() was called */
3853 while (PL_scopestack_ix > oldscope)
3856 PL_curstash = PL_defstash;
3857 PL_curcop = &PL_compiling;
3858 CopLINE_set(PL_curcop, oldline);
3860 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
3861 if (paramList == PL_beginav)
3862 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
3864 Perl_croak(aTHX_ "%s failed--call queue aborted",
3865 paramList == PL_checkav ? "CHECK"
3866 : paramList == PL_initav ? "INIT"
3873 PL_curcop = &PL_compiling;
3874 CopLINE_set(PL_curcop, oldline);
3877 PerlIO_printf(Perl_error_log, "panic: restartop\n");
3885 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3887 S_vcall_list_body(pTHX_ va_list args)
3889 CV *cv = va_arg(args, CV*);
3890 return call_list_body(cv);
3895 S_call_list_body(pTHX_ CV *cv)
3897 PUSHMARK(PL_stack_sp);
3898 call_sv((SV*)cv, G_EVAL|G_DISCARD);
3903 Perl_my_exit(pTHX_ U32 status)
3905 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
3906 thr, (unsigned long) status));
3915 STATUS_NATIVE_SET(status);
3922 Perl_my_failure_exit(pTHX)
3925 if (vaxc$errno & 1) {
3926 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
3927 STATUS_NATIVE_SET(44);
3930 if (!vaxc$errno && errno) /* unlikely */
3931 STATUS_NATIVE_SET(44);
3933 STATUS_NATIVE_SET(vaxc$errno);
3938 STATUS_POSIX_SET(errno);
3940 exitstatus = STATUS_POSIX >> 8;
3941 if (exitstatus & 255)
3942 STATUS_POSIX_SET(exitstatus);
3944 STATUS_POSIX_SET(255);
3951 S_my_exit_jump(pTHX)
3953 register PERL_CONTEXT *cx;
3958 SvREFCNT_dec(PL_e_script);
3959 PL_e_script = Nullsv;
3962 POPSTACK_TO(PL_mainstack);
3963 if (cxstack_ix >= 0) {
3966 POPBLOCK(cx,PL_curpm);
3978 read_e_script(pTHXo_ int idx, SV *buf_sv, int maxlen)
3981 p = SvPVX(PL_e_script);
3982 nl = strchr(p, '\n');
3983 nl = (nl) ? nl+1 : SvEND(PL_e_script);
3985 filter_del(read_e_script);
3988 sv_catpvn(buf_sv, p, nl-p);
3989 sv_chop(PL_e_script, nl);