3 * Copyright (c) 1987-2000 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)
154 struct perl_thread *thr = NULL;
155 #endif /* FAKE_THREADS */
156 #endif /* USE_THREADS */
160 PL_perl_destruct_level = 1;
162 if (PL_perl_destruct_level > 0)
166 /* Init the real globals (and main thread)? */
169 MUTEX_INIT(&PL_sv_mutex);
171 * Safe to use basic SV functions from now on (though
172 * not things like mortals or tainting yet).
174 MUTEX_INIT(&PL_eval_mutex);
175 COND_INIT(&PL_eval_cond);
176 MUTEX_INIT(&PL_threads_mutex);
177 COND_INIT(&PL_nthreads_cond);
178 # ifdef EMULATE_ATOMIC_REFCOUNTS
179 MUTEX_INIT(&PL_svref_mutex);
180 # endif /* EMULATE_ATOMIC_REFCOUNTS */
182 MUTEX_INIT(&PL_cred_mutex);
184 thr = init_main_thread();
185 #endif /* USE_THREADS */
187 #ifdef PERL_FLEXIBLE_EXCEPTIONS
188 PL_protect = MEMBER_TO_FPTR(Perl_default_protect); /* for exceptions */
191 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
193 PL_linestr = NEWSV(65,79);
194 sv_upgrade(PL_linestr,SVt_PVIV);
196 if (!SvREADONLY(&PL_sv_undef)) {
197 /* set read-only and try to insure than we wont see REFCNT==0
200 SvREADONLY_on(&PL_sv_undef);
201 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
203 sv_setpv(&PL_sv_no,PL_No);
205 SvREADONLY_on(&PL_sv_no);
206 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
208 sv_setpv(&PL_sv_yes,PL_Yes);
210 SvREADONLY_on(&PL_sv_yes);
211 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
216 /* PL_sighandlerp = sighandler; */
218 PL_sighandlerp = Perl_sighandler;
220 PL_pidstatus = newHV();
224 * There is no way we can refer to them from Perl so close them to save
225 * space. The other alternative would be to provide STDAUX and STDPRN
228 (void)fclose(stdaux);
229 (void)fclose(stdprn);
233 PL_nrs = newSVpvn("\n", 1);
234 PL_rs = SvREFCNT_inc(PL_nrs);
239 PL_lex_state = LEX_NOTPARSING;
245 SET_NUMERIC_STANDARD();
249 PL_patchlevel = NEWSV(0,4);
250 (void)SvUPGRADE(PL_patchlevel, SVt_PVNV);
251 if (PERL_REVISION > 127 || PERL_VERSION > 127 || PERL_SUBVERSION > 127)
252 SvGROW(PL_patchlevel, UTF8_MAXLEN*3+1);
253 s = (U8*)SvPVX(PL_patchlevel);
254 s = uv_to_utf8(s, (UV)PERL_REVISION);
255 s = uv_to_utf8(s, (UV)PERL_VERSION);
256 s = uv_to_utf8(s, (UV)PERL_SUBVERSION);
258 SvCUR_set(PL_patchlevel, s - (U8*)SvPVX(PL_patchlevel));
259 SvPOK_on(PL_patchlevel);
260 SvNVX(PL_patchlevel) = (NV)PERL_REVISION
261 + ((NV)PERL_VERSION / (NV)1000)
262 #if defined(PERL_SUBVERSION) && PERL_SUBVERSION > 0
263 + ((NV)PERL_SUBVERSION / (NV)1000000)
266 SvNOK_on(PL_patchlevel); /* dual valued */
267 SvUTF8_on(PL_patchlevel);
268 SvREADONLY_on(PL_patchlevel);
271 #if defined(LOCAL_PATCH_COUNT)
272 PL_localpatches = local_patches; /* For possible -v */
275 PerlIO_init(); /* Hook to IO system */
277 PL_fdpid = newAV(); /* for remembering popen pids by fd */
278 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
284 =for apidoc perl_destruct
286 Shuts down a Perl interpreter. See L<perlembed>.
295 int destruct_level; /* 0=none, 1=full, 2=full with checks */
301 #endif /* USE_THREADS */
303 /* wait for all pseudo-forked children to finish */
304 PERL_WAIT_FOR_CHILDREN;
308 /* Pass 1 on any remaining threads: detach joinables, join zombies */
310 MUTEX_LOCK(&PL_threads_mutex);
311 DEBUG_S(PerlIO_printf(Perl_debug_log,
312 "perl_destruct: waiting for %d threads...\n",
314 for (t = thr->next; t != thr; t = t->next) {
315 MUTEX_LOCK(&t->mutex);
316 switch (ThrSTATE(t)) {
319 DEBUG_S(PerlIO_printf(Perl_debug_log,
320 "perl_destruct: joining zombie %p\n", t));
321 ThrSETSTATE(t, THRf_DEAD);
322 MUTEX_UNLOCK(&t->mutex);
325 * The SvREFCNT_dec below may take a long time (e.g. av
326 * may contain an object scalar whose destructor gets
327 * called) so we have to unlock threads_mutex and start
330 MUTEX_UNLOCK(&PL_threads_mutex);
332 SvREFCNT_dec((SV*)av);
333 DEBUG_S(PerlIO_printf(Perl_debug_log,
334 "perl_destruct: joined zombie %p OK\n", t));
336 case THRf_R_JOINABLE:
337 DEBUG_S(PerlIO_printf(Perl_debug_log,
338 "perl_destruct: detaching thread %p\n", t));
339 ThrSETSTATE(t, THRf_R_DETACHED);
341 * We unlock threads_mutex and t->mutex in the opposite order
342 * from which we locked them just so that DETACH won't
343 * deadlock if it panics. It's only a breach of good style
344 * not a bug since they are unlocks not locks.
346 MUTEX_UNLOCK(&PL_threads_mutex);
348 MUTEX_UNLOCK(&t->mutex);
351 DEBUG_S(PerlIO_printf(Perl_debug_log,
352 "perl_destruct: ignoring %p (state %u)\n",
354 MUTEX_UNLOCK(&t->mutex);
355 /* fall through and out */
358 /* We leave the above "Pass 1" loop with threads_mutex still locked */
360 /* Pass 2 on remaining threads: wait for the thread count to drop to one */
361 while (PL_nthreads > 1)
363 DEBUG_S(PerlIO_printf(Perl_debug_log,
364 "perl_destruct: final wait for %d threads\n",
366 COND_WAIT(&PL_nthreads_cond, &PL_threads_mutex);
368 /* At this point, we're the last thread */
369 MUTEX_UNLOCK(&PL_threads_mutex);
370 DEBUG_S(PerlIO_printf(Perl_debug_log, "perl_destruct: armageddon has arrived\n"));
371 MUTEX_DESTROY(&PL_threads_mutex);
372 COND_DESTROY(&PL_nthreads_cond);
373 #endif /* !defined(FAKE_THREADS) */
374 #endif /* USE_THREADS */
376 destruct_level = PL_perl_destruct_level;
380 if ((s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL"))) {
382 if (destruct_level < i)
391 /* We must account for everything. */
393 /* Destroy the main CV and syntax tree */
395 PL_curpad = AvARRAY(PL_comppad);
396 op_free(PL_main_root);
397 PL_main_root = Nullop;
399 PL_curcop = &PL_compiling;
400 PL_main_start = Nullop;
401 SvREFCNT_dec(PL_main_cv);
405 if (PL_sv_objcount) {
407 * Try to destruct global references. We do this first so that the
408 * destructors and destructees still exist. Some sv's might remain.
409 * Non-referenced objects are on their own.
414 /* unhook hooks which will soon be, or use, destroyed data */
415 SvREFCNT_dec(PL_warnhook);
416 PL_warnhook = Nullsv;
417 SvREFCNT_dec(PL_diehook);
420 /* call exit list functions */
421 while (PL_exitlistlen-- > 0)
422 PL_exitlist[PL_exitlistlen].fn(aTHXo_ PL_exitlist[PL_exitlistlen].ptr);
424 Safefree(PL_exitlist);
426 if (destruct_level == 0){
428 DEBUG_P(debprofdump());
430 /* The exit() function will do everything that needs doing. */
434 /* loosen bonds of global variables */
437 (void)PerlIO_close(PL_rsfp);
441 /* Filters for program text */
442 SvREFCNT_dec(PL_rsfp_filters);
443 PL_rsfp_filters = Nullav;
446 PL_preprocess = FALSE;
452 PL_doswitches = FALSE;
453 PL_dowarn = G_WARN_OFF;
454 PL_doextract = FALSE;
455 PL_sawampersand = FALSE; /* must save all match strings */
458 Safefree(PL_inplace);
460 SvREFCNT_dec(PL_patchlevel);
463 SvREFCNT_dec(PL_e_script);
464 PL_e_script = Nullsv;
467 /* magical thingies */
469 Safefree(PL_ofs); /* $, */
472 Safefree(PL_ors); /* $\ */
475 SvREFCNT_dec(PL_rs); /* $/ */
478 SvREFCNT_dec(PL_nrs); /* $/ helper */
481 PL_multiline = 0; /* $* */
482 Safefree(PL_osname); /* $^O */
485 SvREFCNT_dec(PL_statname);
486 PL_statname = Nullsv;
489 /* defgv, aka *_ should be taken care of elsewhere */
491 /* clean up after study() */
492 SvREFCNT_dec(PL_lastscream);
493 PL_lastscream = Nullsv;
494 Safefree(PL_screamfirst);
496 Safefree(PL_screamnext);
500 Safefree(PL_efloatbuf);
501 PL_efloatbuf = Nullch;
504 /* startup and shutdown function lists */
505 SvREFCNT_dec(PL_beginav);
506 SvREFCNT_dec(PL_endav);
507 SvREFCNT_dec(PL_checkav);
508 SvREFCNT_dec(PL_initav);
514 /* shortcuts just get cleared */
520 PL_argvoutgv = Nullgv;
522 PL_stderrgv = Nullgv;
523 PL_last_in_gv = Nullgv;
525 PL_debstash = Nullhv;
527 /* reset so print() ends up where we expect */
530 SvREFCNT_dec(PL_argvout_stack);
531 PL_argvout_stack = Nullav;
533 SvREFCNT_dec(PL_modglobal);
534 PL_modglobal = Nullhv;
535 SvREFCNT_dec(PL_preambleav);
536 PL_preambleav = Nullav;
537 SvREFCNT_dec(PL_subname);
539 SvREFCNT_dec(PL_linestr);
541 SvREFCNT_dec(PL_pidstatus);
542 PL_pidstatus = Nullhv;
543 SvREFCNT_dec(PL_toptarget);
544 PL_toptarget = Nullsv;
545 SvREFCNT_dec(PL_bodytarget);
546 PL_bodytarget = Nullsv;
547 PL_formtarget = Nullsv;
549 /* free locale stuff */
550 #ifdef USE_LOCALE_COLLATE
551 Safefree(PL_collation_name);
552 PL_collation_name = Nullch;
555 #ifdef USE_LOCALE_NUMERIC
556 Safefree(PL_numeric_name);
557 PL_numeric_name = Nullch;
560 /* clear utf8 character classes */
561 SvREFCNT_dec(PL_utf8_alnum);
562 SvREFCNT_dec(PL_utf8_alnumc);
563 SvREFCNT_dec(PL_utf8_ascii);
564 SvREFCNT_dec(PL_utf8_alpha);
565 SvREFCNT_dec(PL_utf8_space);
566 SvREFCNT_dec(PL_utf8_cntrl);
567 SvREFCNT_dec(PL_utf8_graph);
568 SvREFCNT_dec(PL_utf8_digit);
569 SvREFCNT_dec(PL_utf8_upper);
570 SvREFCNT_dec(PL_utf8_lower);
571 SvREFCNT_dec(PL_utf8_print);
572 SvREFCNT_dec(PL_utf8_punct);
573 SvREFCNT_dec(PL_utf8_xdigit);
574 SvREFCNT_dec(PL_utf8_mark);
575 SvREFCNT_dec(PL_utf8_toupper);
576 SvREFCNT_dec(PL_utf8_tolower);
577 PL_utf8_alnum = Nullsv;
578 PL_utf8_alnumc = Nullsv;
579 PL_utf8_ascii = Nullsv;
580 PL_utf8_alpha = Nullsv;
581 PL_utf8_space = Nullsv;
582 PL_utf8_cntrl = Nullsv;
583 PL_utf8_graph = Nullsv;
584 PL_utf8_digit = Nullsv;
585 PL_utf8_upper = Nullsv;
586 PL_utf8_lower = Nullsv;
587 PL_utf8_print = Nullsv;
588 PL_utf8_punct = Nullsv;
589 PL_utf8_xdigit = Nullsv;
590 PL_utf8_mark = Nullsv;
591 PL_utf8_toupper = Nullsv;
592 PL_utf8_totitle = Nullsv;
593 PL_utf8_tolower = Nullsv;
595 if (!specialWARN(PL_compiling.cop_warnings))
596 SvREFCNT_dec(PL_compiling.cop_warnings);
597 PL_compiling.cop_warnings = Nullsv;
599 SvREFCNT_dec(CopFILEGV(&PL_compiling));
600 CopFILEGV_set(&PL_compiling, Nullgv);
603 /* Prepare to destruct main symbol table. */
608 SvREFCNT_dec(PL_curstname);
609 PL_curstname = Nullsv;
611 /* clear queued errors */
612 SvREFCNT_dec(PL_errors);
616 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
617 if (PL_scopestack_ix != 0)
618 Perl_warner(aTHX_ WARN_INTERNAL,
619 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
620 (long)PL_scopestack_ix);
621 if (PL_savestack_ix != 0)
622 Perl_warner(aTHX_ WARN_INTERNAL,
623 "Unbalanced saves: %ld more saves than restores\n",
624 (long)PL_savestack_ix);
625 if (PL_tmps_floor != -1)
626 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced tmps: %ld more allocs than frees\n",
627 (long)PL_tmps_floor + 1);
628 if (cxstack_ix != -1)
629 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced context: %ld more PUSHes than POPs\n",
630 (long)cxstack_ix + 1);
633 /* Now absolutely destruct everything, somehow or other, loops or no. */
635 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
636 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
637 while (PL_sv_count != 0 && PL_sv_count != last_sv_count) {
638 last_sv_count = PL_sv_count;
641 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
642 SvFLAGS(PL_fdpid) |= SVt_PVAV;
643 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
644 SvFLAGS(PL_strtab) |= SVt_PVHV;
646 AvREAL_off(PL_fdpid); /* no surviving entries */
647 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
650 /* Destruct the global string table. */
652 /* Yell and reset the HeVAL() slots that are still holding refcounts,
653 * so that sv_free() won't fail on them.
661 max = HvMAX(PL_strtab);
662 array = HvARRAY(PL_strtab);
665 if (hent && ckWARN_d(WARN_INTERNAL)) {
666 Perl_warner(aTHX_ WARN_INTERNAL,
667 "Unbalanced string table refcount: (%d) for \"%s\"",
668 HeVAL(hent) - Nullsv, HeKEY(hent));
669 HeVAL(hent) = Nullsv;
679 SvREFCNT_dec(PL_strtab);
681 /* free special SVs */
683 SvREFCNT(&PL_sv_yes) = 0;
684 sv_clear(&PL_sv_yes);
685 SvANY(&PL_sv_yes) = NULL;
686 SvREADONLY_off(&PL_sv_yes);
688 SvREFCNT(&PL_sv_no) = 0;
690 SvANY(&PL_sv_no) = NULL;
691 SvREADONLY_off(&PL_sv_no);
693 SvREFCNT(&PL_sv_undef) = 0;
694 SvREADONLY_off(&PL_sv_undef);
696 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
697 Perl_warner(aTHX_ WARN_INTERNAL,"Scalars leaked: %ld\n", (long)PL_sv_count);
701 /* No SVs have survived, need to clean out */
702 Safefree(PL_origfilename);
703 Safefree(PL_reg_start_tmp);
705 Safefree(PL_reg_curpm);
706 Safefree(PL_reg_poscache);
707 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
708 Safefree(PL_op_mask);
710 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
712 DEBUG_P(debprofdump());
714 MUTEX_DESTROY(&PL_strtab_mutex);
715 MUTEX_DESTROY(&PL_sv_mutex);
716 MUTEX_DESTROY(&PL_eval_mutex);
717 MUTEX_DESTROY(&PL_cred_mutex);
718 COND_DESTROY(&PL_eval_cond);
719 #ifdef EMULATE_ATOMIC_REFCOUNTS
720 MUTEX_DESTROY(&PL_svref_mutex);
721 #endif /* EMULATE_ATOMIC_REFCOUNTS */
723 /* As the penultimate thing, free the non-arena SV for thrsv */
724 Safefree(SvPVX(PL_thrsv));
725 Safefree(SvANY(PL_thrsv));
728 #endif /* USE_THREADS */
730 /* As the absolutely last thing, free the non-arena SV for mess() */
733 /* it could have accumulated taint magic */
734 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
737 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
738 moremagic = mg->mg_moremagic;
739 if (mg->mg_ptr && mg->mg_type != 'g' && mg->mg_len >= 0)
740 Safefree(mg->mg_ptr);
744 /* we know that type >= SVt_PV */
745 (void)SvOOK_off(PL_mess_sv);
746 Safefree(SvPVX(PL_mess_sv));
747 Safefree(SvANY(PL_mess_sv));
748 Safefree(PL_mess_sv);
754 =for apidoc perl_free
756 Releases a Perl interpreter. See L<perlembed>.
764 #if defined(PERL_OBJECT)
772 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
774 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
775 PL_exitlist[PL_exitlistlen].fn = fn;
776 PL_exitlist[PL_exitlistlen].ptr = ptr;
781 =for apidoc perl_parse
783 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
789 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
799 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
802 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
803 setuid perl scripts securely.\n");
807 #if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
808 _dyld_lookup_and_bind
809 ("__environ", (unsigned long *) &environ_pointer, NULL);
814 #ifndef VMS /* VMS doesn't have environ array */
815 PL_origenviron = environ;
820 /* Come here if running an undumped a.out. */
822 PL_origfilename = savepv(argv[0]);
823 PL_do_undump = FALSE;
824 cxstack_ix = -1; /* start label stack again */
826 init_postdump_symbols(argc,argv,env);
831 PL_curpad = AvARRAY(PL_comppad);
832 op_free(PL_main_root);
833 PL_main_root = Nullop;
835 PL_main_start = Nullop;
836 SvREFCNT_dec(PL_main_cv);
840 oldscope = PL_scopestack_ix;
841 PL_dowarn = G_WARN_OFF;
843 #ifdef PERL_FLEXIBLE_EXCEPTIONS
844 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
850 #ifndef PERL_FLEXIBLE_EXCEPTIONS
851 parse_body(env,xsinit);
854 call_list(oldscope, PL_checkav);
861 /* my_exit() was called */
862 while (PL_scopestack_ix > oldscope)
865 PL_curstash = PL_defstash;
867 call_list(oldscope, PL_checkav);
868 ret = STATUS_NATIVE_EXPORT;
871 PerlIO_printf(Perl_error_log, "panic: top_env\n");
879 #ifdef PERL_FLEXIBLE_EXCEPTIONS
881 S_vparse_body(pTHX_ va_list args)
883 char **env = va_arg(args, char**);
884 XSINIT_t xsinit = va_arg(args, XSINIT_t);
886 return parse_body(env, xsinit);
891 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
894 int argc = PL_origargc;
895 char **argv = PL_origargv;
896 char *scriptname = NULL;
898 VOL bool dosearch = FALSE;
903 char *cddir = Nullch;
905 sv_setpvn(PL_linestr,"",0);
906 sv = newSVpvn("",0); /* first used for -I flags */
910 for (argc--,argv++; argc > 0; argc--,argv++) {
911 if (argv[0][0] != '-' || !argv[0][1])
915 validarg = " PHOOEY ";
924 win32_argv2utf8(argc-1, argv+1);
927 #ifndef PERL_STRICT_CR
951 if ((s = moreswitches(s)))
961 if (PL_euid != PL_uid || PL_egid != PL_gid)
962 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
964 PL_e_script = newSVpvn("",0);
965 filter_add(read_e_script, NULL);
968 sv_catpv(PL_e_script, s);
970 sv_catpv(PL_e_script, argv[1]);
974 Perl_croak(aTHX_ "No code specified for -e");
975 sv_catpv(PL_e_script, "\n");
978 case 'I': /* -I handled both here and in moreswitches() */
980 if (!*++s && (s=argv[1]) != Nullch) {
985 STRLEN len = strlen(s);
987 incpush(p, TRUE, TRUE);
988 sv_catpvn(sv, "-I", 2);
989 sv_catpvn(sv, p, len);
990 sv_catpvn(sv, " ", 1);
994 Perl_croak(aTHX_ "No directory specified for -I");
998 PL_preprocess = TRUE;
1008 PL_preambleav = newAV();
1009 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
1011 PL_Sv = newSVpv("print myconfig();",0);
1013 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
1015 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
1017 sv_catpv(PL_Sv,"\" Compile-time options:");
1019 sv_catpv(PL_Sv," DEBUGGING");
1021 # ifdef MULTIPLICITY
1022 sv_catpv(PL_Sv," MULTIPLICITY");
1025 sv_catpv(PL_Sv," USE_THREADS");
1027 # ifdef USE_ITHREADS
1028 sv_catpv(PL_Sv," USE_ITHREADS");
1030 # ifdef USE_64_BIT_INT
1031 sv_catpv(PL_Sv," USE_64_BIT_INT");
1033 # ifdef USE_64_BIT_ALL
1034 sv_catpv(PL_Sv," USE_64_BIT_ALL");
1036 # ifdef USE_LONG_DOUBLE
1037 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1039 # ifdef USE_LARGE_FILES
1040 sv_catpv(PL_Sv," USE_LARGE_FILES");
1043 sv_catpv(PL_Sv," USE_SOCKS");
1046 sv_catpv(PL_Sv," PERL_OBJECT");
1048 # ifdef PERL_IMPLICIT_CONTEXT
1049 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1051 # ifdef PERL_IMPLICIT_SYS
1052 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1054 sv_catpv(PL_Sv,"\\n\",");
1056 #if defined(LOCAL_PATCH_COUNT)
1057 if (LOCAL_PATCH_COUNT > 0) {
1059 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
1060 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1061 if (PL_localpatches[i])
1062 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
1066 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
1069 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
1071 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
1074 sv_catpv(PL_Sv, "; \
1076 @env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; \
1077 print \" \\%ENV:\\n @env\\n\" if @env; \
1078 print \" \\@INC:\\n @INC\\n\";");
1081 PL_Sv = newSVpv("config_vars(qw(",0);
1082 sv_catpv(PL_Sv, ++s);
1083 sv_catpv(PL_Sv, "))");
1086 av_push(PL_preambleav, PL_Sv);
1087 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1090 PL_doextract = TRUE;
1098 if (!*++s || isSPACE(*s)) {
1102 /* catch use of gnu style long options */
1103 if (strEQ(s, "version")) {
1107 if (strEQ(s, "help")) {
1114 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1120 #ifndef SECURE_INTERNAL_GETENV
1123 (s = PerlEnv_getenv("PERL5OPT")))
1127 if (*s == '-' && *(s+1) == 'T')
1140 if (!strchr("DIMUdmw", *s))
1141 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
1142 s = moreswitches(s);
1148 scriptname = argv[0];
1151 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1153 else if (scriptname == Nullch) {
1155 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1163 open_script(scriptname,dosearch,sv,&fdscript);
1165 validate_suid(validarg, scriptname,fdscript);
1167 #if defined(SIGCHLD) || defined(SIGCLD)
1170 # define SIGCHLD SIGCLD
1172 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1173 if (sigstate == SIG_IGN) {
1174 if (ckWARN(WARN_SIGNAL))
1175 Perl_warner(aTHX_ WARN_SIGNAL,
1176 "Can't ignore signal CHLD, forcing to default");
1177 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1184 if (cddir && PerlDir_chdir(cddir) < 0)
1185 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1189 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1190 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1191 CvUNIQUE_on(PL_compcv);
1193 PL_comppad = newAV();
1194 av_push(PL_comppad, Nullsv);
1195 PL_curpad = AvARRAY(PL_comppad);
1196 PL_comppad_name = newAV();
1197 PL_comppad_name_fill = 0;
1198 PL_min_intro_pending = 0;
1201 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
1202 PL_curpad[0] = (SV*)newAV();
1203 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1204 CvOWNER(PL_compcv) = 0;
1205 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1206 MUTEX_INIT(CvMUTEXP(PL_compcv));
1207 #endif /* USE_THREADS */
1209 comppadlist = newAV();
1210 AvREAL_off(comppadlist);
1211 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1212 av_store(comppadlist, 1, (SV*)PL_comppad);
1213 CvPADLIST(PL_compcv) = comppadlist;
1215 boot_core_UNIVERSAL();
1217 boot_core_xsutils();
1221 (*xsinit)(aTHXo); /* in case linked C routines want magical variables */
1222 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__)
1230 init_predump_symbols();
1231 /* init_postdump_symbols not currently designed to be called */
1232 /* more than once (ENV isn't cleared first, for example) */
1233 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
1235 init_postdump_symbols(argc,argv,env);
1239 /* now parse the script */
1241 SETERRNO(0,SS$_NORMAL);
1243 if (yyparse() || PL_error_count) {
1245 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
1247 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1251 CopLINE_set(PL_curcop, 0);
1252 PL_curstash = PL_defstash;
1253 PL_preprocess = FALSE;
1255 SvREFCNT_dec(PL_e_script);
1256 PL_e_script = Nullsv;
1259 /* now that script is parsed, we can modify record separator */
1260 SvREFCNT_dec(PL_rs);
1261 PL_rs = SvREFCNT_inc(PL_nrs);
1262 sv_setsv(get_sv("/", TRUE), PL_rs);
1267 SAVECOPFILE(PL_curcop);
1268 SAVECOPLINE(PL_curcop);
1269 gv_check(PL_defstash);
1276 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1277 dump_mstats("after compilation:");
1286 =for apidoc perl_run
1288 Tells a Perl interpreter to run. See L<perlembed>.
1304 oldscope = PL_scopestack_ix;
1306 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1308 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1314 cxstack_ix = -1; /* start context stack again */
1316 case 0: /* normal completion */
1317 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1322 case 2: /* my_exit() */
1323 while (PL_scopestack_ix > oldscope)
1326 PL_curstash = PL_defstash;
1327 if (PL_endav && !PL_minus_c)
1328 call_list(oldscope, PL_endav);
1330 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1331 dump_mstats("after execution: ");
1333 ret = STATUS_NATIVE_EXPORT;
1337 POPSTACK_TO(PL_mainstack);
1340 PerlIO_printf(Perl_error_log, "panic: restartop\n");
1350 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1352 S_vrun_body(pTHX_ va_list args)
1354 I32 oldscope = va_arg(args, I32);
1356 return run_body(oldscope);
1362 S_run_body(pTHX_ I32 oldscope)
1366 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
1367 PL_sawampersand ? "Enabling" : "Omitting"));
1369 if (!PL_restartop) {
1370 DEBUG_x(dump_all());
1371 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
1372 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1376 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
1379 if (PERLDB_SINGLE && PL_DBsingle)
1380 sv_setiv(PL_DBsingle, 1);
1382 call_list(oldscope, PL_initav);
1388 PL_op = PL_restartop;
1392 else if (PL_main_start) {
1393 CvDEPTH(PL_main_cv) = 1;
1394 PL_op = PL_main_start;
1404 =for apidoc p||get_sv
1406 Returns the SV of the specified Perl scalar. If C<create> is set and the
1407 Perl variable does not exist then it will be created. If C<create> is not
1408 set and the variable does not exist then NULL is returned.
1414 Perl_get_sv(pTHX_ const char *name, I32 create)
1418 if (name[1] == '\0' && !isALPHA(name[0])) {
1419 PADOFFSET tmp = find_threadsv(name);
1420 if (tmp != NOT_IN_PAD) {
1422 return THREADSV(tmp);
1425 #endif /* USE_THREADS */
1426 gv = gv_fetchpv(name, create, SVt_PV);
1433 =for apidoc p||get_av
1435 Returns the AV of the specified Perl array. If C<create> is set and the
1436 Perl variable does not exist then it will be created. If C<create> is not
1437 set and the variable does not exist then NULL is returned.
1443 Perl_get_av(pTHX_ const char *name, I32 create)
1445 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1454 =for apidoc p||get_hv
1456 Returns the HV of the specified Perl hash. If C<create> is set and the
1457 Perl variable does not exist then it will be created. If C<create> is not
1458 set and the variable does not exist then NULL is returned.
1464 Perl_get_hv(pTHX_ const char *name, I32 create)
1466 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1475 =for apidoc p||get_cv
1477 Returns the CV of the specified Perl subroutine. If C<create> is set and
1478 the Perl subroutine does not exist then it will be declared (which has the
1479 same effect as saying C<sub name;>). If C<create> is not set and the
1480 subroutine does not exist then NULL is returned.
1486 Perl_get_cv(pTHX_ const char *name, I32 create)
1488 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
1489 /* XXX unsafe for threads if eval_owner isn't held */
1490 /* XXX this is probably not what they think they're getting.
1491 * It has the same effect as "sub name;", i.e. just a forward
1493 if (create && !GvCVu(gv))
1494 return newSUB(start_subparse(FALSE, 0),
1495 newSVOP(OP_CONST, 0, newSVpv(name,0)),
1503 /* Be sure to refetch the stack pointer after calling these routines. */
1506 =for apidoc p||call_argv
1508 Performs a callback to the specified Perl sub. See L<perlcall>.
1514 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
1516 /* See G_* flags in cop.h */
1517 /* null terminated arg list */
1524 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
1529 return call_pv(sub_name, flags);
1533 =for apidoc p||call_pv
1535 Performs a callback to the specified Perl sub. See L<perlcall>.
1541 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
1542 /* name of the subroutine */
1543 /* See G_* flags in cop.h */
1545 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
1549 =for apidoc p||call_method
1551 Performs a callback to the specified Perl method. The blessed object must
1552 be on the stack. See L<perlcall>.
1558 Perl_call_method(pTHX_ const char *methname, I32 flags)
1559 /* name of the subroutine */
1560 /* See G_* flags in cop.h */
1568 XPUSHs(sv_2mortal(newSVpv(methname,0)));
1573 return call_sv(*PL_stack_sp--, flags);
1576 /* May be called with any of a CV, a GV, or an SV containing the name. */
1578 =for apidoc p||call_sv
1580 Performs a callback to the Perl sub whose name is in the SV. See
1587 Perl_call_sv(pTHX_ SV *sv, I32 flags)
1589 /* See G_* flags in cop.h */
1592 LOGOP myop; /* fake syntax tree node */
1596 bool oldcatch = CATCH_GET;
1601 if (flags & G_DISCARD) {
1606 Zero(&myop, 1, LOGOP);
1607 myop.op_next = Nullop;
1608 if (!(flags & G_NOARGS))
1609 myop.op_flags |= OPf_STACKED;
1610 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1611 (flags & G_ARRAY) ? OPf_WANT_LIST :
1616 EXTEND(PL_stack_sp, 1);
1617 *++PL_stack_sp = sv;
1619 oldscope = PL_scopestack_ix;
1621 if (PERLDB_SUB && PL_curstash != PL_debstash
1622 /* Handle first BEGIN of -d. */
1623 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
1624 /* Try harder, since this may have been a sighandler, thus
1625 * curstash may be meaningless. */
1626 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
1627 && !(flags & G_NODEBUG))
1628 PL_op->op_private |= OPpENTERSUB_DB;
1630 if (!(flags & G_EVAL)) {
1632 call_body((OP*)&myop, FALSE);
1633 retval = PL_stack_sp - (PL_stack_base + oldmark);
1634 CATCH_SET(oldcatch);
1637 cLOGOP->op_other = PL_op;
1639 /* we're trying to emulate pp_entertry() here */
1641 register PERL_CONTEXT *cx;
1642 I32 gimme = GIMME_V;
1647 push_return(PL_op->op_next);
1648 PUSHBLOCK(cx, CXt_EVAL, PL_stack_sp);
1650 PL_eval_root = PL_op; /* Only needed so that goto works right. */
1652 PL_in_eval = EVAL_INEVAL;
1653 if (flags & G_KEEPERR)
1654 PL_in_eval |= EVAL_KEEPERR;
1660 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1662 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1669 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1671 call_body((OP*)&myop, FALSE);
1673 retval = PL_stack_sp - (PL_stack_base + oldmark);
1674 if (!(flags & G_KEEPERR))
1681 /* my_exit() was called */
1682 PL_curstash = PL_defstash;
1685 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1686 Perl_croak(aTHX_ "Callback called exit");
1691 PL_op = PL_restartop;
1695 PL_stack_sp = PL_stack_base + oldmark;
1696 if (flags & G_ARRAY)
1700 *++PL_stack_sp = &PL_sv_undef;
1705 if (PL_scopestack_ix > oldscope) {
1709 register PERL_CONTEXT *cx;
1721 if (flags & G_DISCARD) {
1722 PL_stack_sp = PL_stack_base + oldmark;
1731 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1733 S_vcall_body(pTHX_ va_list args)
1735 OP *myop = va_arg(args, OP*);
1736 int is_eval = va_arg(args, int);
1738 call_body(myop, is_eval);
1744 S_call_body(pTHX_ OP *myop, int is_eval)
1748 if (PL_op == myop) {
1750 PL_op = Perl_pp_entereval(aTHX);
1752 PL_op = Perl_pp_entersub(aTHX);
1758 /* Eval a string. The G_EVAL flag is always assumed. */
1761 =for apidoc p||eval_sv
1763 Tells Perl to C<eval> the string in the SV.
1769 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
1771 /* See G_* flags in cop.h */
1774 UNOP myop; /* fake syntax tree node */
1775 I32 oldmark = SP - PL_stack_base;
1782 if (flags & G_DISCARD) {
1789 Zero(PL_op, 1, UNOP);
1790 EXTEND(PL_stack_sp, 1);
1791 *++PL_stack_sp = sv;
1792 oldscope = PL_scopestack_ix;
1794 if (!(flags & G_NOARGS))
1795 myop.op_flags = OPf_STACKED;
1796 myop.op_next = Nullop;
1797 myop.op_type = OP_ENTEREVAL;
1798 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1799 (flags & G_ARRAY) ? OPf_WANT_LIST :
1801 if (flags & G_KEEPERR)
1802 myop.op_flags |= OPf_SPECIAL;
1804 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1806 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1813 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1815 call_body((OP*)&myop,TRUE);
1817 retval = PL_stack_sp - (PL_stack_base + oldmark);
1818 if (!(flags & G_KEEPERR))
1825 /* my_exit() was called */
1826 PL_curstash = PL_defstash;
1829 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1830 Perl_croak(aTHX_ "Callback called exit");
1835 PL_op = PL_restartop;
1839 PL_stack_sp = PL_stack_base + oldmark;
1840 if (flags & G_ARRAY)
1844 *++PL_stack_sp = &PL_sv_undef;
1850 if (flags & G_DISCARD) {
1851 PL_stack_sp = PL_stack_base + oldmark;
1861 =for apidoc p||eval_pv
1863 Tells Perl to C<eval> the given string and return an SV* result.
1869 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
1872 SV* sv = newSVpv(p, 0);
1875 eval_sv(sv, G_SCALAR);
1882 if (croak_on_error && SvTRUE(ERRSV)) {
1884 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
1890 /* Require a module. */
1893 =for apidoc p||require_pv
1895 Tells Perl to C<require> a module.
1901 Perl_require_pv(pTHX_ const char *pv)
1905 PUSHSTACKi(PERLSI_REQUIRE);
1907 sv = sv_newmortal();
1908 sv_setpv(sv, "require '");
1911 eval_sv(sv, G_DISCARD);
1917 Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
1921 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
1922 sv_magic(GvSV(gv), (SV*)gv, 0, name, namlen);
1926 S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
1928 /* This message really ought to be max 23 lines.
1929 * Removed -h because the user already knows that opton. Others? */
1931 static char *usage_msg[] = {
1932 "-0[octal] specify record separator (\\0, if no argument)",
1933 "-a autosplit mode with -n or -p (splits $_ into @F)",
1934 "-C enable native wide character system interfaces",
1935 "-c check syntax only (runs BEGIN and END blocks)",
1936 "-d[:debugger] run program under debugger",
1937 "-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
1938 "-e 'command' one line of program (several -e's allowed, omit programfile)",
1939 "-F/pattern/ split() pattern for -a switch (//'s are optional)",
1940 "-i[extension] edit <> files in place (makes backup if extension supplied)",
1941 "-Idirectory specify @INC/#include directory (several -I's allowed)",
1942 "-l[octal] enable line ending processing, specifies line terminator",
1943 "-[mM][-]module execute `use/no module...' before executing program",
1944 "-n assume 'while (<>) { ... }' loop around program",
1945 "-p assume loop like -n but print line also, like sed",
1946 "-P run program through C preprocessor before compilation",
1947 "-s enable rudimentary parsing for switches after programfile",
1948 "-S look for programfile using PATH environment variable",
1949 "-T enable tainting checks",
1950 "-u dump core after parsing program",
1951 "-U allow unsafe operations",
1952 "-v print version, subversion (includes VERY IMPORTANT perl info)",
1953 "-V[:variable] print configuration summary (or a single Config.pm variable)",
1954 "-w enable many useful warnings (RECOMMENDED)",
1955 "-W enable all warnings",
1956 "-X disable all warnings",
1957 "-x[directory] strip off text before #!perl line and perhaps cd to directory",
1961 char **p = usage_msg;
1963 printf("\nUsage: %s [switches] [--] [programfile] [arguments]", name);
1965 printf("\n %s", *p++);
1968 /* This routine handles any switches that can be given during run */
1971 Perl_moreswitches(pTHX_ char *s)
1980 rschar = (U32)scan_oct(s, 4, &numlen);
1981 SvREFCNT_dec(PL_nrs);
1982 if (rschar & ~((U8)~0))
1983 PL_nrs = &PL_sv_undef;
1984 else if (!rschar && numlen >= 2)
1985 PL_nrs = newSVpvn("", 0);
1988 PL_nrs = newSVpvn(&ch, 1);
1993 PL_widesyscalls = TRUE;
1998 PL_splitstr = savepv(s + 1);
2012 if (*s == ':' || *s == '=') {
2013 my_setenv("PERL5DB", Perl_form(aTHX_ "use Devel::%s;", ++s));
2017 PL_perldb = PERLDB_ALL;
2025 if (isALPHA(s[1])) {
2026 static char debopts[] = "psltocPmfrxuLHXDS";
2029 for (s++; *s && (d = strchr(debopts,*s)); s++)
2030 PL_debug |= 1 << (d - debopts);
2033 PL_debug = atoi(s+1);
2034 for (s++; isDIGIT(*s); s++) ;
2036 PL_debug |= 0x80000000;
2039 if (ckWARN_d(WARN_DEBUGGING))
2040 Perl_warner(aTHX_ WARN_DEBUGGING,
2041 "Recompile perl with -DDEBUGGING to use -D switch\n");
2042 for (s++; isALNUM(*s); s++) ;
2048 usage(PL_origargv[0]);
2052 Safefree(PL_inplace);
2053 PL_inplace = savepv(s+1);
2055 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
2058 if (*s == '-') /* Additional switches on #! line. */
2062 case 'I': /* -I handled both here and in parse_perl() */
2065 while (*s && isSPACE(*s))
2070 /* ignore trailing spaces (possibly followed by other switches) */
2072 for (e = p; *e && !isSPACE(*e); e++) ;
2076 } while (*p && *p != '-');
2077 e = savepvn(s, e-s);
2078 incpush(e, TRUE, TRUE);
2085 Perl_croak(aTHX_ "No directory specified for -I");
2093 PL_ors = savepv("\n");
2095 *PL_ors = (char)scan_oct(s, 3 + (*s == '0'), &numlen);
2100 if (RsPARA(PL_nrs)) {
2105 PL_ors = SvPV(PL_nrs, PL_orslen);
2106 PL_ors = savepvn(PL_ors, PL_orslen);
2110 forbid_setid("-M"); /* XXX ? */
2113 forbid_setid("-m"); /* XXX ? */
2118 /* -M-foo == 'no foo' */
2119 if (*s == '-') { use = "no "; ++s; }
2120 sv = newSVpv(use,0);
2122 /* We allow -M'Module qw(Foo Bar)' */
2123 while(isALNUM(*s) || *s==':') ++s;
2125 sv_catpv(sv, start);
2126 if (*(start-1) == 'm') {
2128 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
2129 sv_catpv( sv, " ()");
2132 sv_catpvn(sv, start, s-start);
2133 sv_catpv(sv, " split(/,/,q{");
2139 PL_preambleav = newAV();
2140 av_push(PL_preambleav, sv);
2143 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
2155 PL_doswitches = TRUE;
2160 Perl_croak(aTHX_ "Too late for \"-T\" option");
2164 PL_do_undump = TRUE;
2172 printf(Perl_form(aTHX_ "\nThis is perl, v%vd built for %s",
2173 PL_patchlevel, ARCHNAME));
2174 #if defined(LOCAL_PATCH_COUNT)
2175 if (LOCAL_PATCH_COUNT > 0)
2176 printf("\n(with %d registered patch%s, see perl -V for more detail)",
2177 (int)LOCAL_PATCH_COUNT, (LOCAL_PATCH_COUNT!=1) ? "es" : "");
2180 printf("\n\nCopyright 1987-2000, Larry Wall\n");
2182 printf("\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
2185 printf("djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n");
2186 printf("djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
2189 printf("\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2190 "Version 5 port Copyright (c) 1994-1999, Andreas Kaiser, Ilya Zakharevich\n");
2193 printf("atariST series port, ++jrb bammi@cadence.com\n");
2196 printf("BeOS port Copyright Tom Spindler, 1997-1999\n");
2199 printf("MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-1999\n");
2202 printf("MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
2205 printf("Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n");
2208 printf("VM/ESA port by Neale Ferguson, 1998-1999\n");
2211 printf("BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
2214 printf("MiNT port by Guido Flohr, 1997-1999\n");
2217 printf("EPOC port by Olaf Flebbe, 1999-2000\n");
2219 #ifdef BINARY_BUILD_NOTICE
2220 BINARY_BUILD_NOTICE;
2223 Perl may be copied only under the terms of either the Artistic License or the\n\
2224 GNU General Public License, which may be found in the Perl 5.0 source kit.\n\n\
2225 Complete documentation for Perl, including FAQ lists, should be found on\n\
2226 this system using `man perl' or `perldoc perl'. If you have access to the\n\
2227 Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
2230 if (! (PL_dowarn & G_WARN_ALL_MASK))
2231 PL_dowarn |= G_WARN_ON;
2235 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
2236 PL_compiling.cop_warnings = WARN_ALL ;
2240 PL_dowarn = G_WARN_ALL_OFF;
2241 PL_compiling.cop_warnings = WARN_NONE ;
2246 if (s[1] == '-') /* Additional switches on #! line. */
2251 #if defined(WIN32) || !defined(PERL_STRICT_CR)
2257 #ifdef ALTERNATE_SHEBANG
2258 case 'S': /* OS/2 needs -S on "extproc" line. */
2266 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
2271 /* compliments of Tom Christiansen */
2273 /* unexec() can be found in the Gnu emacs distribution */
2274 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
2277 Perl_my_unexec(pTHX)
2285 prog = newSVpv(BIN_EXP, 0);
2286 sv_catpv(prog, "/perl");
2287 file = newSVpv(PL_origfilename, 0);
2288 sv_catpv(file, ".perldump");
2290 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2291 /* unexec prints msg to stderr in case of failure */
2292 PerlProc_exit(status);
2295 # include <lib$routines.h>
2296 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
2298 ABORT(); /* for use with undump */
2303 /* initialize curinterp */
2308 #ifdef PERL_OBJECT /* XXX kludge */
2311 PL_chopset = " \n-"; \
2312 PL_copline = NOLINE; \
2313 PL_curcop = &PL_compiling;\
2314 PL_curcopdb = NULL; \
2316 PL_dumpindent = 4; \
2317 PL_laststatval = -1; \
2318 PL_laststype = OP_STAT; \
2319 PL_maxscream = -1; \
2320 PL_maxsysfd = MAXSYSFD; \
2321 PL_statname = Nullsv; \
2322 PL_tmps_floor = -1; \
2324 PL_op_mask = NULL; \
2325 PL_laststatval = -1; \
2326 PL_laststype = OP_STAT; \
2327 PL_mess_sv = Nullsv; \
2328 PL_splitstr = " "; \
2329 PL_generation = 100; \
2330 PL_exitlist = NULL; \
2331 PL_exitlistlen = 0; \
2333 PL_in_clean_objs = FALSE; \
2334 PL_in_clean_all = FALSE; \
2335 PL_profiledata = NULL; \
2337 PL_rsfp_filters = Nullav; \
2342 # ifdef MULTIPLICITY
2343 # define PERLVAR(var,type)
2344 # define PERLVARA(var,n,type)
2345 # if defined(PERL_IMPLICIT_CONTEXT)
2346 # if defined(USE_THREADS)
2347 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2348 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2349 # else /* !USE_THREADS */
2350 # define PERLVARI(var,type,init) aTHX->var = init;
2351 # define PERLVARIC(var,type,init) aTHX->var = init;
2352 # endif /* USE_THREADS */
2354 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2355 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2357 # include "intrpvar.h"
2358 # ifndef USE_THREADS
2359 # include "thrdvar.h"
2366 # define PERLVAR(var,type)
2367 # define PERLVARA(var,n,type)
2368 # define PERLVARI(var,type,init) PL_##var = init;
2369 # define PERLVARIC(var,type,init) PL_##var = init;
2370 # include "intrpvar.h"
2371 # ifndef USE_THREADS
2372 # include "thrdvar.h"
2384 S_init_main_stash(pTHX)
2389 /* Note that strtab is a rather special HV. Assumptions are made
2390 about not iterating on it, and not adding tie magic to it.
2391 It is properly deallocated in perl_destruct() */
2392 PL_strtab = newHV();
2394 MUTEX_INIT(&PL_strtab_mutex);
2396 HvSHAREKEYS_off(PL_strtab); /* mandatory */
2397 hv_ksplit(PL_strtab, 512);
2399 PL_curstash = PL_defstash = newHV();
2400 PL_curstname = newSVpvn("main",4);
2401 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2402 SvREFCNT_dec(GvHV(gv));
2403 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
2405 HvNAME(PL_defstash) = savepv("main");
2406 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2407 GvMULTI_on(PL_incgv);
2408 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2409 GvMULTI_on(PL_hintgv);
2410 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2411 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2412 GvMULTI_on(PL_errgv);
2413 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2414 GvMULTI_on(PL_replgv);
2415 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
2416 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2417 sv_setpvn(ERRSV, "", 0);
2418 PL_curstash = PL_defstash;
2419 CopSTASH_set(&PL_compiling, PL_defstash);
2420 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
2421 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
2422 /* We must init $/ before switches are processed. */
2423 sv_setpvn(get_sv("/", TRUE), "\n", 1);
2427 S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
2434 PL_origfilename = savepv("-e");
2437 /* if find_script() returns, it returns a malloc()-ed value */
2438 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
2440 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2441 char *s = scriptname + 8;
2442 *fdscript = atoi(s);
2446 scriptname = savepv(s + 1);
2447 Safefree(PL_origfilename);
2448 PL_origfilename = scriptname;
2453 CopFILE_set(PL_curcop, PL_origfilename);
2454 if (strEQ(PL_origfilename,"-"))
2456 if (*fdscript >= 0) {
2457 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
2458 #if defined(HAS_FCNTL) && defined(F_SETFD)
2460 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2463 else if (PL_preprocess) {
2464 char *cpp_cfg = CPPSTDIN;
2465 SV *cpp = newSVpvn("",0);
2466 SV *cmd = NEWSV(0,0);
2468 if (strEQ(cpp_cfg, "cppstdin"))
2469 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
2470 sv_catpv(cpp, cpp_cfg);
2472 sv_catpvn(sv, "-I", 2);
2473 sv_catpv(sv,PRIVLIB_EXP);
2476 Perl_sv_setpvf(aTHX_ cmd, "\
2477 sed %s -e \"/^[^#]/b\" \
2478 -e \"/^#[ ]*include[ ]/b\" \
2479 -e \"/^#[ ]*define[ ]/b\" \
2480 -e \"/^#[ ]*if[ ]/b\" \
2481 -e \"/^#[ ]*ifdef[ ]/b\" \
2482 -e \"/^#[ ]*ifndef[ ]/b\" \
2483 -e \"/^#[ ]*else/b\" \
2484 -e \"/^#[ ]*elif[ ]/b\" \
2485 -e \"/^#[ ]*undef[ ]/b\" \
2486 -e \"/^#[ ]*endif/b\" \
2488 %s | %"SVf" -C %"SVf" %s",
2489 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
2492 Perl_sv_setpvf(aTHX_ cmd, "\
2493 %s %s -e '/^[^#]/b' \
2494 -e '/^#[ ]*include[ ]/b' \
2495 -e '/^#[ ]*define[ ]/b' \
2496 -e '/^#[ ]*if[ ]/b' \
2497 -e '/^#[ ]*ifdef[ ]/b' \
2498 -e '/^#[ ]*ifndef[ ]/b' \
2499 -e '/^#[ ]*else/b' \
2500 -e '/^#[ ]*elif[ ]/b' \
2501 -e '/^#[ ]*undef[ ]/b' \
2502 -e '/^#[ ]*endif/b' \
2504 %s | %"SVf" %"SVf" %s",
2506 Perl_sv_setpvf(aTHX_ cmd, "\
2507 %s %s -e '/^[^#]/b' \
2508 -e '/^#[ ]*include[ ]/b' \
2509 -e '/^#[ ]*define[ ]/b' \
2510 -e '/^#[ ]*if[ ]/b' \
2511 -e '/^#[ ]*ifdef[ ]/b' \
2512 -e '/^#[ ]*ifndef[ ]/b' \
2513 -e '/^#[ ]*else/b' \
2514 -e '/^#[ ]*elif[ ]/b' \
2515 -e '/^#[ ]*undef[ ]/b' \
2516 -e '/^#[ ]*endif/b' \
2518 %s | %"SVf" -C %"SVf" %s",
2525 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
2527 scriptname, cpp, sv, CPPMINUS);
2528 PL_doextract = FALSE;
2529 #ifdef IAMSUID /* actually, this is caught earlier */
2530 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
2532 (void)seteuid(PL_uid); /* musn't stay setuid root */
2535 (void)setreuid((Uid_t)-1, PL_uid);
2537 #ifdef HAS_SETRESUID
2538 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
2540 PerlProc_setuid(PL_uid);
2544 if (PerlProc_geteuid() != PL_uid)
2545 Perl_croak(aTHX_ "Can't do seteuid!\n");
2547 #endif /* IAMSUID */
2548 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
2552 else if (!*scriptname) {
2553 forbid_setid("program input from stdin");
2554 PL_rsfp = PerlIO_stdin();
2557 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
2558 #if defined(HAS_FCNTL) && defined(F_SETFD)
2560 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2565 #ifndef IAMSUID /* in case script is not readable before setuid */
2567 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
2568 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2571 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
2572 (int)PERL_REVISION, (int)PERL_VERSION,
2573 (int)PERL_SUBVERSION), PL_origargv);
2574 Perl_croak(aTHX_ "Can't do setuid\n");
2578 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
2579 CopFILE(PL_curcop), Strerror(errno));
2584 * I_SYSSTATVFS HAS_FSTATVFS
2586 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
2587 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2588 * here so that metaconfig picks them up. */
2592 S_fd_on_nosuid_fs(pTHX_ int fd)
2594 int check_okay = 0; /* able to do all the required sys/libcalls */
2595 int on_nosuid = 0; /* the fd is on a nosuid fs */
2597 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
2598 * fstatvfs() is UNIX98.
2599 * fstatfs() is 4.3 BSD.
2600 * ustat()+getmnt() is pre-4.3 BSD.
2601 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2602 * an irrelevant filesystem while trying to reach the right one.
2605 # ifdef HAS_FSTATVFS
2606 struct statvfs stfs;
2607 check_okay = fstatvfs(fd, &stfs) == 0;
2608 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
2610 # ifdef PERL_MOUNT_NOSUID
2611 # if defined(HAS_FSTATFS) && \
2612 defined(HAS_STRUCT_STATFS) && \
2613 defined(HAS_STRUCT_STATFS_F_FLAGS)
2615 check_okay = fstatfs(fd, &stfs) == 0;
2616 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
2618 # if defined(HAS_FSTAT) && \
2619 defined(HAS_USTAT) && \
2620 defined(HAS_GETMNT) && \
2621 defined(HAS_STRUCT_FS_DATA) && \
2624 if (fstat(fd, &fdst) == 0) {
2626 if (ustat(fdst.st_dev, &us) == 0) {
2628 /* NOSTAT_ONE here because we're not examining fields which
2629 * vary between that case and STAT_ONE. */
2630 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
2631 size_t cmplen = sizeof(us.f_fname);
2632 if (sizeof(fsd.fd_req.path) < cmplen)
2633 cmplen = sizeof(fsd.fd_req.path);
2634 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2635 fdst.st_dev == fsd.fd_req.dev) {
2637 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2643 # endif /* fstat+ustat+getmnt */
2644 # endif /* fstatfs */
2646 # if defined(HAS_GETMNTENT) && \
2647 defined(HAS_HASMNTOPT) && \
2648 defined(MNTOPT_NOSUID)
2649 FILE *mtab = fopen("/etc/mtab", "r");
2650 struct mntent *entry;
2651 struct stat stb, fsb;
2653 if (mtab && (fstat(fd, &stb) == 0)) {
2654 while (entry = getmntent(mtab)) {
2655 if (stat(entry->mnt_dir, &fsb) == 0
2656 && fsb.st_dev == stb.st_dev)
2658 /* found the filesystem */
2660 if (hasmntopt(entry, MNTOPT_NOSUID))
2663 } /* A single fs may well fail its stat(). */
2668 # endif /* getmntent+hasmntopt */
2669 # endif /* PERL_MOUNT_NOSUID: fstatfs or fstat+ustat+statfs */
2670 # endif /* statvfs */
2673 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
2676 #endif /* IAMSUID */
2679 S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
2685 /* do we need to emulate setuid on scripts? */
2687 /* This code is for those BSD systems that have setuid #! scripts disabled
2688 * in the kernel because of a security problem. Merely defining DOSUID
2689 * in perl will not fix that problem, but if you have disabled setuid
2690 * scripts in the kernel, this will attempt to emulate setuid and setgid
2691 * on scripts that have those now-otherwise-useless bits set. The setuid
2692 * root version must be called suidperl or sperlN.NNN. If regular perl
2693 * discovers that it has opened a setuid script, it calls suidperl with
2694 * the same argv that it had. If suidperl finds that the script it has
2695 * just opened is NOT setuid root, it sets the effective uid back to the
2696 * uid. We don't just make perl setuid root because that loses the
2697 * effective uid we had before invoking perl, if it was different from the
2700 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2701 * be defined in suidperl only. suidperl must be setuid root. The
2702 * Configure script will set this up for you if you want it.
2709 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
2710 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
2711 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
2716 #ifndef HAS_SETREUID
2717 /* On this access check to make sure the directories are readable,
2718 * there is actually a small window that the user could use to make
2719 * filename point to an accessible directory. So there is a faint
2720 * chance that someone could execute a setuid script down in a
2721 * non-accessible directory. I don't know what to do about that.
2722 * But I don't think it's too important. The manual lies when
2723 * it says access() is useful in setuid programs.
2725 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
2726 Perl_croak(aTHX_ "Permission denied");
2728 /* If we can swap euid and uid, then we can determine access rights
2729 * with a simple stat of the file, and then compare device and
2730 * inode to make sure we did stat() on the same file we opened.
2731 * Then we just have to make sure he or she can execute it.
2734 struct stat tmpstatbuf;
2738 setreuid(PL_euid,PL_uid) < 0
2741 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
2744 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
2745 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
2746 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
2747 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
2748 #if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
2749 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
2750 Perl_croak(aTHX_ "Permission denied");
2752 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
2753 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
2754 (void)PerlIO_close(PL_rsfp);
2755 if (PL_rsfp = PerlProc_popen("/bin/mail root","w")) { /* heh, heh */
2756 PerlIO_printf(PL_rsfp,
2757 "User %"Uid_t_f" tried to run dev %ld ino %ld in place of dev %ld ino %ld!\n\
2758 (Filename of set-id script was %s, uid %"Uid_t_f" gid %"Gid_t_f".)\n\nSincerely,\nperl\n",
2759 PL_uid,(long)tmpstatbuf.st_dev, (long)tmpstatbuf.st_ino,
2760 (long)PL_statbuf.st_dev, (long)PL_statbuf.st_ino,
2762 PL_statbuf.st_uid, PL_statbuf.st_gid);
2763 (void)PerlProc_pclose(PL_rsfp);
2765 Perl_croak(aTHX_ "Permission denied\n");
2769 setreuid(PL_uid,PL_euid) < 0
2771 # if defined(HAS_SETRESUID)
2772 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
2775 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
2776 Perl_croak(aTHX_ "Can't reswap uid and euid");
2777 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
2778 Perl_croak(aTHX_ "Permission denied\n");
2780 #endif /* HAS_SETREUID */
2781 #endif /* IAMSUID */
2783 if (!S_ISREG(PL_statbuf.st_mode))
2784 Perl_croak(aTHX_ "Permission denied");
2785 if (PL_statbuf.st_mode & S_IWOTH)
2786 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
2787 PL_doswitches = FALSE; /* -s is insecure in suid */
2788 CopLINE_inc(PL_curcop);
2789 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
2790 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
2791 Perl_croak(aTHX_ "No #! line");
2792 s = SvPV(PL_linestr,n_a)+2;
2794 while (!isSPACE(*s)) s++;
2795 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
2796 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
2797 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
2798 Perl_croak(aTHX_ "Not a perl script");
2799 while (*s == ' ' || *s == '\t') s++;
2801 * #! arg must be what we saw above. They can invoke it by
2802 * mentioning suidperl explicitly, but they may not add any strange
2803 * arguments beyond what #! says if they do invoke suidperl that way.
2805 len = strlen(validarg);
2806 if (strEQ(validarg," PHOOEY ") ||
2807 strnNE(s,validarg,len) || !isSPACE(s[len]))
2808 Perl_croak(aTHX_ "Args must match #! line");
2811 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
2812 PL_euid == PL_statbuf.st_uid)
2814 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
2815 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
2816 #endif /* IAMSUID */
2818 if (PL_euid) { /* oops, we're not the setuid root perl */
2819 (void)PerlIO_close(PL_rsfp);
2822 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
2823 (int)PERL_REVISION, (int)PERL_VERSION,
2824 (int)PERL_SUBVERSION), PL_origargv);
2826 Perl_croak(aTHX_ "Can't do setuid\n");
2829 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
2831 (void)setegid(PL_statbuf.st_gid);
2834 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
2836 #ifdef HAS_SETRESGID
2837 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
2839 PerlProc_setgid(PL_statbuf.st_gid);
2843 if (PerlProc_getegid() != PL_statbuf.st_gid)
2844 Perl_croak(aTHX_ "Can't do setegid!\n");
2846 if (PL_statbuf.st_mode & S_ISUID) {
2847 if (PL_statbuf.st_uid != PL_euid)
2849 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
2852 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
2854 #ifdef HAS_SETRESUID
2855 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
2857 PerlProc_setuid(PL_statbuf.st_uid);
2861 if (PerlProc_geteuid() != PL_statbuf.st_uid)
2862 Perl_croak(aTHX_ "Can't do seteuid!\n");
2864 else if (PL_uid) { /* oops, mustn't run as root */
2866 (void)seteuid((Uid_t)PL_uid);
2869 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
2871 #ifdef HAS_SETRESUID
2872 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
2874 PerlProc_setuid((Uid_t)PL_uid);
2878 if (PerlProc_geteuid() != PL_uid)
2879 Perl_croak(aTHX_ "Can't do seteuid!\n");
2882 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
2883 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
2886 else if (PL_preprocess)
2887 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
2888 else if (fdscript >= 0)
2889 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
2891 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
2893 /* We absolutely must clear out any saved ids here, so we */
2894 /* exec the real perl, substituting fd script for scriptname. */
2895 /* (We pass script name as "subdir" of fd, which perl will grok.) */
2896 PerlIO_rewind(PL_rsfp);
2897 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
2898 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
2899 if (!PL_origargv[which])
2900 Perl_croak(aTHX_ "Permission denied");
2901 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
2902 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
2903 #if defined(HAS_FCNTL) && defined(F_SETFD)
2904 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
2906 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
2907 (int)PERL_REVISION, (int)PERL_VERSION,
2908 (int)PERL_SUBVERSION), PL_origargv);/* try again */
2909 Perl_croak(aTHX_ "Can't do setuid\n");
2910 #endif /* IAMSUID */
2912 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
2913 #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
2915 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
2916 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
2918 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
2921 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
2922 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
2923 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
2924 /* not set-id, must be wrapped */
2930 S_find_beginning(pTHX)
2932 register char *s, *s2;
2934 /* skip forward in input to the real script? */
2937 while (PL_doextract) {
2938 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
2939 Perl_croak(aTHX_ "No Perl script found in input\n");
2940 if (*s == '#' && s[1] == '!' && (s = instr(s,"perl"))) {
2941 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
2942 PL_doextract = FALSE;
2943 while (*s && !(isSPACE (*s) || *s == '#')) s++;
2945 while (*s == ' ' || *s == '\t') s++;
2947 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
2948 if (strnEQ(s2-4,"perl",4))
2950 while ((s = moreswitches(s)))
2961 PL_uid = PerlProc_getuid();
2962 PL_euid = PerlProc_geteuid();
2963 PL_gid = PerlProc_getgid();
2964 PL_egid = PerlProc_getegid();
2966 PL_uid |= PL_gid << 16;
2967 PL_euid |= PL_egid << 16;
2969 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
2973 S_forbid_setid(pTHX_ char *s)
2975 if (PL_euid != PL_uid)
2976 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
2977 if (PL_egid != PL_gid)
2978 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
2982 Perl_init_debugger(pTHX)
2985 HV *ostash = PL_curstash;
2987 PL_curstash = PL_debstash;
2988 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
2989 AvREAL_off(PL_dbargs);
2990 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
2991 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
2992 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
2993 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
2994 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
2995 sv_setiv(PL_DBsingle, 0);
2996 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
2997 sv_setiv(PL_DBtrace, 0);
2998 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
2999 sv_setiv(PL_DBsignal, 0);
3000 PL_curstash = ostash;
3003 #ifndef STRESS_REALLOC
3004 #define REASONABLE(size) (size)
3006 #define REASONABLE(size) (1) /* unreasonable */
3010 Perl_init_stacks(pTHX)
3012 /* start with 128-item stack and 8K cxstack */
3013 PL_curstackinfo = new_stackinfo(REASONABLE(128),
3014 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3015 PL_curstackinfo->si_type = PERLSI_MAIN;
3016 PL_curstack = PL_curstackinfo->si_stack;
3017 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
3019 PL_stack_base = AvARRAY(PL_curstack);
3020 PL_stack_sp = PL_stack_base;
3021 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
3023 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3026 PL_tmps_max = REASONABLE(128);
3028 New(54,PL_markstack,REASONABLE(32),I32);
3029 PL_markstack_ptr = PL_markstack;
3030 PL_markstack_max = PL_markstack + REASONABLE(32);
3034 New(54,PL_scopestack,REASONABLE(32),I32);
3035 PL_scopestack_ix = 0;
3036 PL_scopestack_max = REASONABLE(32);
3038 New(54,PL_savestack,REASONABLE(128),ANY);
3039 PL_savestack_ix = 0;
3040 PL_savestack_max = REASONABLE(128);
3042 New(54,PL_retstack,REASONABLE(16),OP*);
3044 PL_retstack_max = REASONABLE(16);
3053 while (PL_curstackinfo->si_next)
3054 PL_curstackinfo = PL_curstackinfo->si_next;
3055 while (PL_curstackinfo) {
3056 PERL_SI *p = PL_curstackinfo->si_prev;
3057 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3058 Safefree(PL_curstackinfo->si_cxstack);
3059 Safefree(PL_curstackinfo);
3060 PL_curstackinfo = p;
3062 Safefree(PL_tmps_stack);
3063 Safefree(PL_markstack);
3064 Safefree(PL_scopestack);
3065 Safefree(PL_savestack);
3066 Safefree(PL_retstack);
3070 static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */
3081 lex_start(PL_linestr);
3083 PL_subname = newSVpvn("main",4);
3087 S_init_predump_symbols(pTHX)
3093 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3094 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3095 GvMULTI_on(PL_stdingv);
3096 io = GvIOp(PL_stdingv);
3097 IoIFP(io) = PerlIO_stdin();
3098 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
3100 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3102 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
3105 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
3107 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
3109 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3111 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3112 GvMULTI_on(PL_stderrgv);
3113 io = GvIOp(PL_stderrgv);
3114 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
3115 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
3117 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3119 PL_statname = NEWSV(66,0); /* last filename we did stat on */
3122 PL_osname = savepv(OSNAME);
3126 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
3133 argc--,argv++; /* skip name of script */
3134 if (PL_doswitches) {
3135 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3138 if (argv[0][1] == '-' && !argv[0][2]) {
3142 if ((s = strchr(argv[0], '='))) {
3144 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
3147 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
3150 PL_toptarget = NEWSV(0,0);
3151 sv_upgrade(PL_toptarget, SVt_PVFM);
3152 sv_setpvn(PL_toptarget, "", 0);
3153 PL_bodytarget = NEWSV(0,0);
3154 sv_upgrade(PL_bodytarget, SVt_PVFM);
3155 sv_setpvn(PL_bodytarget, "", 0);
3156 PL_formtarget = PL_bodytarget;
3159 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
3160 sv_setpv(GvSV(tmpgv),PL_origfilename);
3161 magicname("0", "0", 1);
3163 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV)))
3165 sv_setpv(GvSV(tmpgv), os2_execname());
3167 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
3169 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3170 GvMULTI_on(PL_argvgv);
3171 (void)gv_AVadd(PL_argvgv);
3172 av_clear(GvAVn(PL_argvgv));
3173 for (; argc > 0; argc--,argv++) {
3174 SV *sv = newSVpv(argv[0],0);
3175 av_push(GvAVn(PL_argvgv),sv);
3176 if (PL_widesyscalls)
3177 sv_utf8_upgrade(sv);
3180 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
3182 GvMULTI_on(PL_envgv);
3183 hv = GvHVn(PL_envgv);
3184 hv_magic(hv, PL_envgv, 'E');
3185 #if !defined( VMS) && !defined(EPOC) /* VMS doesn't have environ array */
3186 /* Note that if the supplied env parameter is actually a copy
3187 of the global environ then it may now point to free'd memory
3188 if the environment has been modified since. To avoid this
3189 problem we treat env==NULL as meaning 'use the default'
3194 environ[0] = Nullch;
3195 for (; *env; env++) {
3196 if (!(s = strchr(*env,'=')))
3202 sv = newSVpv(s--,0);
3203 (void)hv_store(hv, *env, s - *env, sv, 0);
3205 #if defined(__BORLANDC__) && defined(USE_WIN32_RTL_ENV)
3206 /* Sins of the RTL. See note in my_setenv(). */
3207 (void)PerlEnv_putenv(savepv(*env));
3211 #ifdef DYNAMIC_ENV_FETCH
3212 HvNAME(hv) = savepv(ENV_HV_NAME);
3216 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
3217 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
3221 S_init_perllib(pTHX)
3226 s = PerlEnv_getenv("PERL5LIB");
3228 incpush(s, TRUE, TRUE);
3230 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE);
3232 /* Treat PERL5?LIB as a possible search list logical name -- the
3233 * "natural" VMS idiom for a Unix path string. We allow each
3234 * element to be a set of |-separated directories for compatibility.
3238 if (my_trnlnm("PERL5LIB",buf,0))
3239 do { incpush(buf,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
3241 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE);
3245 /* Use the ~-expanded versions of APPLLIB (undocumented),
3246 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
3249 incpush(APPLLIB_EXP, TRUE, TRUE);
3253 incpush(ARCHLIB_EXP, FALSE, FALSE);
3256 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
3259 incpush(PRIVLIB_EXP, TRUE, FALSE);
3261 incpush(PRIVLIB_EXP, FALSE, FALSE);
3265 /* sitearch is always relative to sitelib on Windows for
3266 * DLL-based path intuition to work correctly */
3267 # if !defined(WIN32)
3268 incpush(SITEARCH_EXP, FALSE, FALSE);
3274 incpush(SITELIB_EXP, TRUE, FALSE); /* this picks up sitearch as well */
3276 incpush(SITELIB_EXP, FALSE, FALSE);
3280 #ifdef SITELIB_STEM /* Search for version-specific dirs below here */
3281 incpush(SITELIB_STEM, FALSE, TRUE);
3284 #ifdef PERL_VENDORARCH_EXP
3285 /* vendorarch is always relative to vendorlib on Windows for
3286 * DLL-based path intuition to work correctly */
3287 # if !defined(WIN32)
3288 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE);
3292 #ifdef PERL_VENDORLIB_EXP
3294 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE); /* this picks up vendorarch as well */
3296 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE);
3300 #ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
3301 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE);
3305 incpush(".", FALSE, FALSE);
3309 # define PERLLIB_SEP ';'
3312 # define PERLLIB_SEP '|'
3314 # define PERLLIB_SEP ':'
3317 #ifndef PERLLIB_MANGLE
3318 # define PERLLIB_MANGLE(s,n) (s)
3322 S_incpush(pTHX_ char *p, int addsubdirs, int addoldvers)
3324 SV *subdir = Nullsv;
3329 if (addsubdirs || addoldvers) {
3330 subdir = sv_newmortal();
3333 /* Break at all separators */
3335 SV *libdir = NEWSV(55,0);
3338 /* skip any consecutive separators */
3339 while ( *p == PERLLIB_SEP ) {
3340 /* Uncomment the next line for PATH semantics */
3341 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
3345 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
3346 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
3351 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
3352 p = Nullch; /* break out */
3356 * BEFORE pushing libdir onto @INC we may first push version- and
3357 * archname-specific sub-directories.
3359 if (addsubdirs || addoldvers) {
3360 #ifdef PERL_INC_VERSION_LIST
3361 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
3362 const char *incverlist[] = { PERL_INC_VERSION_LIST };
3363 const char **incver;
3365 struct stat tmpstatbuf;
3370 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
3372 while (unix[len-1] == '/') len--; /* Cosmetic */
3373 sv_usepvn(libdir,unix,len);
3376 PerlIO_printf(Perl_error_log,
3377 "Failed to unixify @INC element \"%s\"\n",
3381 /* .../version/archname if -d .../version/archname */
3382 Perl_sv_setpvf(aTHX_ subdir, "%"SVf"/"PERL_FS_VER_FMT"/%s",
3384 (int)PERL_REVISION, (int)PERL_VERSION,
3385 (int)PERL_SUBVERSION, ARCHNAME);
3386 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3387 S_ISDIR(tmpstatbuf.st_mode))
3388 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3390 /* .../version if -d .../version */
3391 Perl_sv_setpvf(aTHX_ subdir, "%"SVf"/"PERL_FS_VER_FMT, libdir,
3392 (int)PERL_REVISION, (int)PERL_VERSION,
3393 (int)PERL_SUBVERSION);
3394 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3395 S_ISDIR(tmpstatbuf.st_mode))
3396 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3398 /* .../archname if -d .../archname */
3399 Perl_sv_setpvf(aTHX_ subdir, "%"SVf"/%s", libdir, ARCHNAME);
3400 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3401 S_ISDIR(tmpstatbuf.st_mode))
3402 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3406 #ifdef PERL_INC_VERSION_LIST
3407 for (incver = incverlist; *incver; incver++) {
3408 /* .../xxx if -d .../xxx */
3409 Perl_sv_setpvf(aTHX_ subdir, "%"SVf"/%s", libdir, *incver);
3410 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3411 S_ISDIR(tmpstatbuf.st_mode))
3412 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3418 /* finally push this lib directory on the end of @INC */
3419 av_push(GvAVn(PL_incgv), libdir);
3424 STATIC struct perl_thread *
3425 S_init_main_thread(pTHX)
3427 #if !defined(PERL_IMPLICIT_CONTEXT)
3428 struct perl_thread *thr;
3432 Newz(53, thr, 1, struct perl_thread);
3433 PL_curcop = &PL_compiling;
3434 thr->interp = PERL_GET_INTERP;
3435 thr->cvcache = newHV();
3436 thr->threadsv = newAV();
3437 /* thr->threadsvp is set when find_threadsv is called */
3438 thr->specific = newAV();
3439 thr->flags = THRf_R_JOINABLE;
3440 MUTEX_INIT(&thr->mutex);
3441 /* Handcraft thrsv similarly to mess_sv */
3442 New(53, PL_thrsv, 1, SV);
3443 Newz(53, xpv, 1, XPV);
3444 SvFLAGS(PL_thrsv) = SVt_PV;
3445 SvANY(PL_thrsv) = (void*)xpv;
3446 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
3447 SvPVX(PL_thrsv) = (char*)thr;
3448 SvCUR_set(PL_thrsv, sizeof(thr));
3449 SvLEN_set(PL_thrsv, sizeof(thr));
3450 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
3451 thr->oursv = PL_thrsv;
3452 PL_chopset = " \n-";
3455 MUTEX_LOCK(&PL_threads_mutex);
3460 MUTEX_UNLOCK(&PL_threads_mutex);
3462 #ifdef HAVE_THREAD_INTERN
3463 Perl_init_thread_intern(thr);
3466 #ifdef SET_THREAD_SELF
3467 SET_THREAD_SELF(thr);
3469 thr->self = pthread_self();
3470 #endif /* SET_THREAD_SELF */
3474 * These must come after the SET_THR because sv_setpvn does
3475 * SvTAINT and the taint fields require dTHR.
3477 PL_toptarget = NEWSV(0,0);
3478 sv_upgrade(PL_toptarget, SVt_PVFM);
3479 sv_setpvn(PL_toptarget, "", 0);
3480 PL_bodytarget = NEWSV(0,0);
3481 sv_upgrade(PL_bodytarget, SVt_PVFM);
3482 sv_setpvn(PL_bodytarget, "", 0);
3483 PL_formtarget = PL_bodytarget;
3484 thr->errsv = newSVpvn("", 0);
3485 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
3488 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3489 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3490 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3491 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3492 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
3494 PL_reginterp_cnt = 0;
3498 #endif /* USE_THREADS */
3501 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
3505 line_t oldline = CopLINE(PL_curcop);
3511 while (AvFILL(paramList) >= 0) {
3512 cv = (CV*)av_shift(paramList);
3514 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3515 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_list_body), cv);
3521 #ifndef PERL_FLEXIBLE_EXCEPTIONS
3525 (void)SvPV(atsv, len);
3528 PL_curcop = &PL_compiling;
3529 CopLINE_set(PL_curcop, oldline);
3530 if (paramList == PL_beginav)
3531 sv_catpv(atsv, "BEGIN failed--compilation aborted");
3533 Perl_sv_catpvf(aTHX_ atsv,
3534 "%s failed--call queue aborted",
3535 paramList == PL_checkav ? "CHECK"
3536 : paramList == PL_initav ? "INIT"
3538 while (PL_scopestack_ix > oldscope)
3541 Perl_croak(aTHX_ "%s", SvPVx(atsv, n_a));
3548 /* my_exit() was called */
3549 while (PL_scopestack_ix > oldscope)
3552 PL_curstash = PL_defstash;
3553 PL_curcop = &PL_compiling;
3554 CopLINE_set(PL_curcop, oldline);
3556 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
3557 if (paramList == PL_beginav)
3558 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
3560 Perl_croak(aTHX_ "%s failed--call queue aborted",
3561 paramList == PL_checkav ? "CHECK"
3562 : paramList == PL_initav ? "INIT"
3569 PL_curcop = &PL_compiling;
3570 CopLINE_set(PL_curcop, oldline);
3573 PerlIO_printf(Perl_error_log, "panic: restartop\n");
3581 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3583 S_vcall_list_body(pTHX_ va_list args)
3585 CV *cv = va_arg(args, CV*);
3586 return call_list_body(cv);
3591 S_call_list_body(pTHX_ CV *cv)
3593 PUSHMARK(PL_stack_sp);
3594 call_sv((SV*)cv, G_EVAL|G_DISCARD);
3599 Perl_my_exit(pTHX_ U32 status)
3603 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
3604 thr, (unsigned long) status));
3613 STATUS_NATIVE_SET(status);
3620 Perl_my_failure_exit(pTHX)
3623 if (vaxc$errno & 1) {
3624 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
3625 STATUS_NATIVE_SET(44);
3628 if (!vaxc$errno && errno) /* unlikely */
3629 STATUS_NATIVE_SET(44);
3631 STATUS_NATIVE_SET(vaxc$errno);
3636 STATUS_POSIX_SET(errno);
3638 exitstatus = STATUS_POSIX >> 8;
3639 if (exitstatus & 255)
3640 STATUS_POSIX_SET(exitstatus);
3642 STATUS_POSIX_SET(255);
3649 S_my_exit_jump(pTHX)
3652 register PERL_CONTEXT *cx;
3657 SvREFCNT_dec(PL_e_script);
3658 PL_e_script = Nullsv;
3661 POPSTACK_TO(PL_mainstack);
3662 if (cxstack_ix >= 0) {
3665 POPBLOCK(cx,PL_curpm);
3677 read_e_script(pTHXo_ int idx, SV *buf_sv, int maxlen)
3680 p = SvPVX(PL_e_script);
3681 nl = strchr(p, '\n');
3682 nl = (nl) ? nl+1 : SvEND(PL_e_script);
3684 filter_del(read_e_script);
3687 sv_catpvn(buf_sv, p, nl-p);
3688 sv_chop(PL_e_script, nl);