3 * Copyright (c) 1987-2002 Larry Wall
5 * You may distribute under the terms of either the GNU General Public
6 * License or the Artistic License, as specified in the README file.
11 * "A ship then new they built for him/of mithril and of elven glass" --Bilbo
15 #define PERL_IN_PERL_C
17 #include "patchlevel.h" /* for local_patches */
21 char *nw_get_sitelib(const char *pl);
24 /* XXX If this causes problems, set i_unistd=undef in the hint file. */
41 #if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
42 char *getenv (char *); /* Usually in <stdlib.h> */
45 static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
53 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
59 #if defined(USE_ITHREADS)
60 # define INIT_TLS_AND_INTERP \
62 if (!PL_curinterp) { \
63 PERL_SET_INTERP(my_perl); \
66 PERL_SET_THX(my_perl); \
70 PERL_SET_THX(my_perl); \
74 # define INIT_TLS_AND_INTERP \
76 if (!PL_curinterp) { \
77 PERL_SET_INTERP(my_perl); \
79 PERL_SET_THX(my_perl); \
83 #ifdef PERL_IMPLICIT_SYS
85 perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
86 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
87 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
88 struct IPerlDir* ipD, struct IPerlSock* ipS,
89 struct IPerlProc* ipP)
91 PerlInterpreter *my_perl;
92 /* New() needs interpreter, so call malloc() instead */
93 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
95 Zero(my_perl, 1, PerlInterpreter);
111 =head1 Embedding Functions
113 =for apidoc perl_alloc
115 Allocates a new Perl interpreter. See L<perlembed>.
123 PerlInterpreter *my_perl;
124 #ifdef USE_5005THREADS
128 /* New() needs interpreter, so call malloc() instead */
129 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
132 Zero(my_perl, 1, PerlInterpreter);
135 #endif /* PERL_IMPLICIT_SYS */
138 =for apidoc perl_construct
140 Initializes a new Perl interpreter. See L<perlembed>.
146 perl_construct(pTHXx)
150 PL_perl_destruct_level = 1;
152 if (PL_perl_destruct_level > 0)
156 /* Init the real globals (and main thread)? */
159 MUTEX_INIT(&PL_dollarzero_mutex); /* for $0 modifying */
161 #ifdef PERL_FLEXIBLE_EXCEPTIONS
162 PL_protect = MEMBER_TO_FPTR(Perl_default_protect); /* for exceptions */
165 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
167 PL_linestr = NEWSV(65,79);
168 sv_upgrade(PL_linestr,SVt_PVIV);
170 if (!SvREADONLY(&PL_sv_undef)) {
171 /* set read-only and try to insure than we wont see REFCNT==0
174 SvREADONLY_on(&PL_sv_undef);
175 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
177 sv_setpv(&PL_sv_no,PL_No);
179 SvREADONLY_on(&PL_sv_no);
180 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
182 sv_setpv(&PL_sv_yes,PL_Yes);
184 SvREADONLY_on(&PL_sv_yes);
185 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
188 PL_sighandlerp = Perl_sighandler;
189 PL_pidstatus = newHV();
192 PL_rs = newSVpvn("\n", 1);
197 PL_lex_state = LEX_NOTPARSING;
203 SET_NUMERIC_STANDARD();
207 PL_patchlevel = NEWSV(0,4);
208 (void)SvUPGRADE(PL_patchlevel, SVt_PVNV);
209 if (PERL_REVISION > 127 || PERL_VERSION > 127 || PERL_SUBVERSION > 127)
210 SvGROW(PL_patchlevel, UTF8_MAXLEN*3+1);
211 s = (U8*)SvPVX(PL_patchlevel);
212 /* Build version strings using "native" characters */
213 s = uvchr_to_utf8(s, (UV)PERL_REVISION);
214 s = uvchr_to_utf8(s, (UV)PERL_VERSION);
215 s = uvchr_to_utf8(s, (UV)PERL_SUBVERSION);
217 SvCUR_set(PL_patchlevel, s - (U8*)SvPVX(PL_patchlevel));
218 SvPOK_on(PL_patchlevel);
219 SvNVX(PL_patchlevel) = (NV)PERL_REVISION +
220 ((NV)PERL_VERSION / (NV)1000) +
221 ((NV)PERL_SUBVERSION / (NV)1000000);
222 SvNOK_on(PL_patchlevel); /* dual valued */
223 SvUTF8_on(PL_patchlevel);
224 SvREADONLY_on(PL_patchlevel);
227 #if defined(LOCAL_PATCH_COUNT)
228 PL_localpatches = local_patches; /* For possible -v */
231 #ifdef HAVE_INTERP_INTERN
235 PerlIO_init(aTHX); /* Hook to IO system */
237 PL_fdpid = newAV(); /* for remembering popen pids by fd */
238 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
239 PL_errors = newSVpvn("",0);
240 sv_setpvn(PERL_DEBUG_PAD(0), "", 0); /* For regex debugging. */
241 sv_setpvn(PERL_DEBUG_PAD(1), "", 0); /* ext/re needs these */
242 sv_setpvn(PERL_DEBUG_PAD(2), "", 0); /* even without DEBUGGING. */
244 PL_regex_padav = newAV();
245 av_push(PL_regex_padav,(SV*)newAV()); /* First entry is an array of empty elements */
246 PL_regex_pad = AvARRAY(PL_regex_padav);
248 #ifdef USE_REENTRANT_API
249 Perl_reentrant_init(aTHX);
252 /* Note that strtab is a rather special HV. Assumptions are made
253 about not iterating on it, and not adding tie magic to it.
254 It is properly deallocated in perl_destruct() */
257 HvSHAREKEYS_off(PL_strtab); /* mandatory */
258 hv_ksplit(PL_strtab, 512);
260 #if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
261 _dyld_lookup_and_bind
262 ("__environ", (unsigned long *) &environ_pointer, NULL);
265 #ifdef USE_ENVIRON_ARRAY
266 PL_origenviron = environ;
269 /* Use sysconf(_SC_CLK_TCK) if available, if not
270 * available or if the sysconf() fails, use the HZ. */
271 #if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK)
272 PL_clocktick = sysconf(_SC_CLK_TCK);
273 if (PL_clocktick <= 0)
281 =for apidoc nothreadhook
283 Stub that provides thread hook for perl_destruct when there are
290 Perl_nothreadhook(pTHX)
296 =for apidoc perl_destruct
298 Shuts down a Perl interpreter. See L<perlembed>.
306 volatile int destruct_level; /* 0=none, 1=full, 2=full with checks */
308 #ifdef USE_5005THREADS
310 #endif /* USE_5005THREADS */
312 /* wait for all pseudo-forked children to finish */
313 PERL_WAIT_FOR_CHILDREN;
315 destruct_level = PL_perl_destruct_level;
319 if ((s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL"))) {
321 if (destruct_level < i)
328 if(PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
333 if (PL_endav && !PL_minus_c)
334 call_list(PL_scopestack_ix, PL_endav);
340 /* Need to flush since END blocks can produce output */
343 if (CALL_FPTR(PL_threadhook)(aTHX)) {
344 /* Threads hook has vetoed further cleanup */
345 return STATUS_NATIVE_EXPORT;
348 /* We must account for everything. */
350 /* Destroy the main CV and syntax tree */
352 op_free(PL_main_root);
353 PL_main_root = Nullop;
355 PL_curcop = &PL_compiling;
356 PL_main_start = Nullop;
357 SvREFCNT_dec(PL_main_cv);
361 /* Tell PerlIO we are about to tear things apart in case
362 we have layers which are using resources that should
366 PerlIO_destruct(aTHX);
368 if (PL_sv_objcount) {
370 * Try to destruct global references. We do this first so that the
371 * destructors and destructees still exist. Some sv's might remain.
372 * Non-referenced objects are on their own.
377 /* unhook hooks which will soon be, or use, destroyed data */
378 SvREFCNT_dec(PL_warnhook);
379 PL_warnhook = Nullsv;
380 SvREFCNT_dec(PL_diehook);
383 /* call exit list functions */
384 while (PL_exitlistlen-- > 0)
385 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
387 Safefree(PL_exitlist);
389 if (destruct_level == 0){
391 DEBUG_P(debprofdump());
393 #if defined(PERLIO_LAYERS)
394 /* No more IO - including error messages ! */
395 PerlIO_cleanup(aTHX);
398 /* The exit() function will do everything that needs doing. */
399 return STATUS_NATIVE_EXPORT;
402 /* jettison our possibly duplicated environment */
403 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
404 * so we certainly shouldn't free it here
406 #if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
407 if (environ != PL_origenviron
409 /* only main thread can free environ[0] contents */
410 && PL_curinterp == aTHX
416 for (i = 0; environ[i]; i++)
417 safesysfree(environ[i]);
419 /* Must use safesysfree() when working with environ. */
420 safesysfree(environ);
422 environ = PL_origenviron;
427 /* the syntax tree is shared between clones
428 * so op_free(PL_main_root) only ReREFCNT_dec's
429 * REGEXPs in the parent interpreter
430 * we need to manually ReREFCNT_dec for the clones
433 I32 i = AvFILLp(PL_regex_padav) + 1;
434 SV **ary = AvARRAY(PL_regex_padav);
438 REGEXP *re = INT2PTR(REGEXP *,SvIVX(resv));
440 if (SvFLAGS(resv) & SVf_BREAK) {
441 /* this is PL_reg_curpm, already freed
442 * flag is set in regexec.c:S_regtry
444 SvFLAGS(resv) &= ~SVf_BREAK;
446 else if(SvREPADTMP(resv)) {
447 SvREPADTMP_off(resv);
454 SvREFCNT_dec(PL_regex_padav);
455 PL_regex_padav = Nullav;
459 /* loosen bonds of global variables */
462 (void)PerlIO_close(PL_rsfp);
466 /* Filters for program text */
467 SvREFCNT_dec(PL_rsfp_filters);
468 PL_rsfp_filters = Nullav;
471 PL_preprocess = FALSE;
477 PL_doswitches = FALSE;
478 PL_dowarn = G_WARN_OFF;
479 PL_doextract = FALSE;
480 PL_sawampersand = FALSE; /* must save all match strings */
483 Safefree(PL_inplace);
485 SvREFCNT_dec(PL_patchlevel);
488 SvREFCNT_dec(PL_e_script);
489 PL_e_script = Nullsv;
492 /* magical thingies */
494 SvREFCNT_dec(PL_ofs_sv); /* $, */
497 SvREFCNT_dec(PL_ors_sv); /* $\ */
500 SvREFCNT_dec(PL_rs); /* $/ */
503 PL_multiline = 0; /* $* */
504 Safefree(PL_osname); /* $^O */
507 SvREFCNT_dec(PL_statname);
508 PL_statname = Nullsv;
511 /* defgv, aka *_ should be taken care of elsewhere */
513 /* clean up after study() */
514 SvREFCNT_dec(PL_lastscream);
515 PL_lastscream = Nullsv;
516 Safefree(PL_screamfirst);
518 Safefree(PL_screamnext);
522 Safefree(PL_efloatbuf);
523 PL_efloatbuf = Nullch;
526 /* startup and shutdown function lists */
527 SvREFCNT_dec(PL_beginav);
528 SvREFCNT_dec(PL_beginav_save);
529 SvREFCNT_dec(PL_endav);
530 SvREFCNT_dec(PL_checkav);
531 SvREFCNT_dec(PL_checkav_save);
532 SvREFCNT_dec(PL_initav);
534 PL_beginav_save = Nullav;
537 PL_checkav_save = Nullav;
540 /* shortcuts just get cleared */
546 PL_argvoutgv = Nullgv;
548 PL_stderrgv = Nullgv;
549 PL_last_in_gv = Nullgv;
551 PL_debstash = Nullhv;
553 /* reset so print() ends up where we expect */
556 SvREFCNT_dec(PL_argvout_stack);
557 PL_argvout_stack = Nullav;
559 SvREFCNT_dec(PL_modglobal);
560 PL_modglobal = Nullhv;
561 SvREFCNT_dec(PL_preambleav);
562 PL_preambleav = Nullav;
563 SvREFCNT_dec(PL_subname);
565 SvREFCNT_dec(PL_linestr);
567 SvREFCNT_dec(PL_pidstatus);
568 PL_pidstatus = Nullhv;
569 SvREFCNT_dec(PL_toptarget);
570 PL_toptarget = Nullsv;
571 SvREFCNT_dec(PL_bodytarget);
572 PL_bodytarget = Nullsv;
573 PL_formtarget = Nullsv;
575 /* free locale stuff */
576 #ifdef USE_LOCALE_COLLATE
577 Safefree(PL_collation_name);
578 PL_collation_name = Nullch;
581 #ifdef USE_LOCALE_NUMERIC
582 Safefree(PL_numeric_name);
583 PL_numeric_name = Nullch;
584 SvREFCNT_dec(PL_numeric_radix_sv);
587 /* clear utf8 character classes */
588 SvREFCNT_dec(PL_utf8_alnum);
589 SvREFCNT_dec(PL_utf8_alnumc);
590 SvREFCNT_dec(PL_utf8_ascii);
591 SvREFCNT_dec(PL_utf8_alpha);
592 SvREFCNT_dec(PL_utf8_space);
593 SvREFCNT_dec(PL_utf8_cntrl);
594 SvREFCNT_dec(PL_utf8_graph);
595 SvREFCNT_dec(PL_utf8_digit);
596 SvREFCNT_dec(PL_utf8_upper);
597 SvREFCNT_dec(PL_utf8_lower);
598 SvREFCNT_dec(PL_utf8_print);
599 SvREFCNT_dec(PL_utf8_punct);
600 SvREFCNT_dec(PL_utf8_xdigit);
601 SvREFCNT_dec(PL_utf8_mark);
602 SvREFCNT_dec(PL_utf8_toupper);
603 SvREFCNT_dec(PL_utf8_totitle);
604 SvREFCNT_dec(PL_utf8_tolower);
605 SvREFCNT_dec(PL_utf8_tofold);
606 SvREFCNT_dec(PL_utf8_idstart);
607 SvREFCNT_dec(PL_utf8_idcont);
608 PL_utf8_alnum = Nullsv;
609 PL_utf8_alnumc = Nullsv;
610 PL_utf8_ascii = Nullsv;
611 PL_utf8_alpha = Nullsv;
612 PL_utf8_space = Nullsv;
613 PL_utf8_cntrl = Nullsv;
614 PL_utf8_graph = Nullsv;
615 PL_utf8_digit = Nullsv;
616 PL_utf8_upper = Nullsv;
617 PL_utf8_lower = Nullsv;
618 PL_utf8_print = Nullsv;
619 PL_utf8_punct = Nullsv;
620 PL_utf8_xdigit = Nullsv;
621 PL_utf8_mark = Nullsv;
622 PL_utf8_toupper = Nullsv;
623 PL_utf8_totitle = Nullsv;
624 PL_utf8_tolower = Nullsv;
625 PL_utf8_tofold = Nullsv;
626 PL_utf8_idstart = Nullsv;
627 PL_utf8_idcont = Nullsv;
629 if (!specialWARN(PL_compiling.cop_warnings))
630 SvREFCNT_dec(PL_compiling.cop_warnings);
631 PL_compiling.cop_warnings = Nullsv;
632 if (!specialCopIO(PL_compiling.cop_io))
633 SvREFCNT_dec(PL_compiling.cop_io);
634 PL_compiling.cop_io = Nullsv;
635 CopFILE_free(&PL_compiling);
636 CopSTASH_free(&PL_compiling);
638 /* Prepare to destruct main symbol table. */
643 SvREFCNT_dec(PL_curstname);
644 PL_curstname = Nullsv;
646 /* clear queued errors */
647 SvREFCNT_dec(PL_errors);
651 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
652 if (PL_scopestack_ix != 0)
653 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
654 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
655 (long)PL_scopestack_ix);
656 if (PL_savestack_ix != 0)
657 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
658 "Unbalanced saves: %ld more saves than restores\n",
659 (long)PL_savestack_ix);
660 if (PL_tmps_floor != -1)
661 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
662 (long)PL_tmps_floor + 1);
663 if (cxstack_ix != -1)
664 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
665 (long)cxstack_ix + 1);
668 /* Now absolutely destruct everything, somehow or other, loops or no. */
669 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
670 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
672 /* the 2 is for PL_fdpid and PL_strtab */
673 while (PL_sv_count > 2 && sv_clean_all())
676 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
677 SvFLAGS(PL_fdpid) |= SVt_PVAV;
678 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
679 SvFLAGS(PL_strtab) |= SVt_PVHV;
681 AvREAL_off(PL_fdpid); /* no surviving entries */
682 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
685 #ifdef HAVE_INTERP_INTERN
689 /* Destruct the global string table. */
691 /* Yell and reset the HeVAL() slots that are still holding refcounts,
692 * so that sv_free() won't fail on them.
700 max = HvMAX(PL_strtab);
701 array = HvARRAY(PL_strtab);
704 if (hent && ckWARN_d(WARN_INTERNAL)) {
705 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
706 "Unbalanced string table refcount: (%d) for \"%s\"",
707 HeVAL(hent) - Nullsv, HeKEY(hent));
708 HeVAL(hent) = Nullsv;
718 SvREFCNT_dec(PL_strtab);
721 /* free the pointer table used for cloning */
722 ptr_table_free(PL_ptr_table);
725 /* free special SVs */
727 SvREFCNT(&PL_sv_yes) = 0;
728 sv_clear(&PL_sv_yes);
729 SvANY(&PL_sv_yes) = NULL;
730 SvFLAGS(&PL_sv_yes) = 0;
732 SvREFCNT(&PL_sv_no) = 0;
734 SvANY(&PL_sv_no) = NULL;
735 SvFLAGS(&PL_sv_no) = 0;
739 for (i=0; i<=2; i++) {
740 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
741 sv_clear(PERL_DEBUG_PAD(i));
742 SvANY(PERL_DEBUG_PAD(i)) = NULL;
743 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
747 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
748 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
750 #ifdef DEBUG_LEAKING_SCALARS
751 if (PL_sv_count != 0) {
756 for (sva = PL_sv_arenaroot; sva; sva = (SV*)SvANY(sva)) {
757 svend = &sva[SvREFCNT(sva)];
758 for (sv = sva + 1; sv < svend; ++sv) {
759 if (SvTYPE(sv) != SVTYPEMASK) {
760 PerlIO_printf(Perl_debug_log, "leaked: 0x%p\n", sv);
768 #if defined(PERLIO_LAYERS)
769 /* No more IO - including error messages ! */
770 PerlIO_cleanup(aTHX);
773 /* sv_undef needs to stay immortal until after PerlIO_cleanup
774 as currently layers use it rather than Nullsv as a marker
775 for no arg - and will try and SvREFCNT_dec it.
777 SvREFCNT(&PL_sv_undef) = 0;
778 SvREADONLY_off(&PL_sv_undef);
780 Safefree(PL_origfilename);
781 Safefree(PL_reg_start_tmp);
783 Safefree(PL_reg_curpm);
784 Safefree(PL_reg_poscache);
785 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
786 Safefree(PL_op_mask);
787 Safefree(PL_psig_ptr);
788 Safefree(PL_psig_name);
789 Safefree(PL_bitcount);
790 Safefree(PL_psig_pend);
792 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
794 DEBUG_P(debprofdump());
796 #ifdef USE_REENTRANT_API
797 Perl_reentrant_free(aTHX);
802 /* As the absolutely last thing, free the non-arena SV for mess() */
805 /* it could have accumulated taint magic */
806 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
809 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
810 moremagic = mg->mg_moremagic;
811 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
813 Safefree(mg->mg_ptr);
817 /* we know that type >= SVt_PV */
818 (void)SvOOK_off(PL_mess_sv);
819 Safefree(SvPVX(PL_mess_sv));
820 Safefree(SvANY(PL_mess_sv));
821 Safefree(PL_mess_sv);
824 return STATUS_NATIVE_EXPORT;
828 =for apidoc perl_free
830 Releases a Perl interpreter. See L<perlembed>.
838 #if defined(WIN32) || defined(NETWARE)
839 # if defined(PERL_IMPLICIT_SYS)
841 void *host = nw_internal_host;
843 void *host = w32_internal_host;
847 nw_delete_internal_host(host);
849 win32_delete_internal_host(host);
860 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
862 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
863 PL_exitlist[PL_exitlistlen].fn = fn;
864 PL_exitlist[PL_exitlistlen].ptr = ptr;
869 =for apidoc perl_parse
871 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
877 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
882 #ifdef USE_5005THREADS
886 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
889 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
890 setuid perl scripts securely.\n");
899 /* Come here if running an undumped a.out. */
901 PL_origfilename = savepv(argv[0]);
902 PL_do_undump = FALSE;
903 cxstack_ix = -1; /* start label stack again */
905 init_postdump_symbols(argc,argv,env);
910 op_free(PL_main_root);
911 PL_main_root = Nullop;
913 PL_main_start = Nullop;
914 SvREFCNT_dec(PL_main_cv);
918 oldscope = PL_scopestack_ix;
919 PL_dowarn = G_WARN_OFF;
921 #ifdef PERL_FLEXIBLE_EXCEPTIONS
922 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
928 #ifndef PERL_FLEXIBLE_EXCEPTIONS
929 parse_body(env,xsinit);
932 call_list(oldscope, PL_checkav);
939 /* my_exit() was called */
940 while (PL_scopestack_ix > oldscope)
943 PL_curstash = PL_defstash;
945 call_list(oldscope, PL_checkav);
946 ret = STATUS_NATIVE_EXPORT;
949 PerlIO_printf(Perl_error_log, "panic: top_env\n");
957 #ifdef PERL_FLEXIBLE_EXCEPTIONS
959 S_vparse_body(pTHX_ va_list args)
961 char **env = va_arg(args, char**);
962 XSINIT_t xsinit = va_arg(args, XSINIT_t);
964 return parse_body(env, xsinit);
969 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
971 int argc = PL_origargc;
972 char **argv = PL_origargv;
973 char *scriptname = NULL;
975 VOL bool dosearch = FALSE;
979 char *cddir = Nullch;
981 sv_setpvn(PL_linestr,"",0);
982 sv = newSVpvn("",0); /* first used for -I flags */
986 for (argc--,argv++; argc > 0; argc--,argv++) {
987 if (argv[0][0] != '-' || !argv[0][1])
991 validarg = " PHOOEY ";
1000 win32_argv2utf8(argc-1, argv+1);
1003 #ifndef PERL_STRICT_CR
1027 if ((s = moreswitches(s)))
1032 if( !PL_tainting ) {
1033 PL_taint_warn = TRUE;
1040 PL_taint_warn = FALSE;
1045 #ifdef MACOS_TRADITIONAL
1046 /* ignore -e for Dev:Pseudo argument */
1047 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
1050 if (PL_euid != PL_uid || PL_egid != PL_gid)
1051 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
1053 PL_e_script = newSVpvn("",0);
1054 filter_add(read_e_script, NULL);
1057 sv_catpv(PL_e_script, s);
1059 sv_catpv(PL_e_script, argv[1]);
1063 Perl_croak(aTHX_ "No code specified for -e");
1064 sv_catpv(PL_e_script, "\n");
1067 case 'I': /* -I handled both here and in moreswitches() */
1069 if (!*++s && (s=argv[1]) != Nullch) {
1074 STRLEN len = strlen(s);
1075 p = savepvn(s, len);
1076 incpush(p, TRUE, TRUE, FALSE);
1077 sv_catpvn(sv, "-I", 2);
1078 sv_catpvn(sv, p, len);
1079 sv_catpvn(sv, " ", 1);
1083 Perl_croak(aTHX_ "No directory specified for -I");
1087 PL_preprocess = TRUE;
1097 PL_preambleav = newAV();
1098 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
1100 PL_Sv = newSVpv("print myconfig();",0);
1102 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
1104 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
1106 sv_catpv(PL_Sv,"\" Compile-time options:");
1108 sv_catpv(PL_Sv," DEBUGGING");
1110 # ifdef MULTIPLICITY
1111 sv_catpv(PL_Sv," MULTIPLICITY");
1113 # ifdef USE_5005THREADS
1114 sv_catpv(PL_Sv," USE_5005THREADS");
1116 # ifdef USE_ITHREADS
1117 sv_catpv(PL_Sv," USE_ITHREADS");
1119 # ifdef USE_64_BIT_INT
1120 sv_catpv(PL_Sv," USE_64_BIT_INT");
1122 # ifdef USE_64_BIT_ALL
1123 sv_catpv(PL_Sv," USE_64_BIT_ALL");
1125 # ifdef USE_LONG_DOUBLE
1126 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1128 # ifdef USE_LARGE_FILES
1129 sv_catpv(PL_Sv," USE_LARGE_FILES");
1132 sv_catpv(PL_Sv," USE_SOCKS");
1134 # ifdef PERL_IMPLICIT_CONTEXT
1135 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1137 # ifdef PERL_IMPLICIT_SYS
1138 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1140 sv_catpv(PL_Sv,"\\n\",");
1142 #if defined(LOCAL_PATCH_COUNT)
1143 if (LOCAL_PATCH_COUNT > 0) {
1145 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
1146 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1147 if (PL_localpatches[i])
1148 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
1152 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
1155 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
1157 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
1160 sv_catpv(PL_Sv, "; \
1162 @env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; ");
1165 push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
1168 print \" \\%ENV:\\n @env\\n\" if @env; \
1169 print \" \\@INC:\\n @INC\\n\";");
1172 PL_Sv = newSVpv("config_vars(qw(",0);
1173 sv_catpv(PL_Sv, ++s);
1174 sv_catpv(PL_Sv, "))");
1177 av_push(PL_preambleav, PL_Sv);
1178 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1181 PL_doextract = TRUE;
1189 if (!*++s || isSPACE(*s)) {
1193 /* catch use of gnu style long options */
1194 if (strEQ(s, "version")) {
1198 if (strEQ(s, "help")) {
1205 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1209 sv_setsv(get_sv("/", TRUE), PL_rs);
1212 #ifndef SECURE_INTERNAL_GETENV
1215 (s = PerlEnv_getenv("PERL5OPT")))
1220 if (*s == '-' && *(s+1) == 'T') {
1222 PL_taint_warn = FALSE;
1225 char *popt_copy = Nullch;
1238 if (!strchr("DIMUdmtw", *s))
1239 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
1243 popt_copy = SvPVX(sv_2mortal(newSVpv(popt,0)));
1244 s = popt_copy + (s - popt);
1245 d = popt_copy + (d - popt);
1252 if( !PL_tainting ) {
1253 PL_taint_warn = TRUE;
1263 if (PL_taint_warn && PL_dowarn != G_WARN_ALL_OFF) {
1264 PL_compiling.cop_warnings = newSVpvn(WARN_TAINTstring, WARNsize);
1268 scriptname = argv[0];
1271 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1273 else if (scriptname == Nullch) {
1275 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1283 open_script(scriptname,dosearch,sv,&fdscript);
1285 validate_suid(validarg, scriptname,fdscript);
1288 #if defined(SIGCHLD) || defined(SIGCLD)
1291 # define SIGCHLD SIGCLD
1293 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1294 if (sigstate == SIG_IGN) {
1295 if (ckWARN(WARN_SIGNAL))
1296 Perl_warner(aTHX_ packWARN(WARN_SIGNAL),
1297 "Can't ignore signal CHLD, forcing to default");
1298 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1304 #ifdef MACOS_TRADITIONAL
1305 if (PL_doextract || gMacPerl_AlwaysExtract) {
1310 if (cddir && PerlDir_chdir(cddir) < 0)
1311 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1315 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1316 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1317 CvUNIQUE_on(PL_compcv);
1319 CvPADLIST(PL_compcv) = pad_new(0);
1320 #ifdef USE_5005THREADS
1321 CvOWNER(PL_compcv) = 0;
1322 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1323 MUTEX_INIT(CvMUTEXP(PL_compcv));
1324 #endif /* USE_5005THREADS */
1327 boot_core_UNIVERSAL();
1329 boot_core_xsutils();
1333 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
1335 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
1341 # ifdef HAS_SOCKS5_INIT
1342 socks5_init(argv[0]);
1348 init_predump_symbols();
1349 /* init_postdump_symbols not currently designed to be called */
1350 /* more than once (ENV isn't cleared first, for example) */
1351 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
1353 init_postdump_symbols(argc,argv,env);
1355 /* PL_utf8locale is conditionally turned on by
1356 * locale.c:Perl_init_i18nl10n() if the environment
1357 * look like the user wants to use UTF-8.
1358 * PL_wantutf8 is turned on by -C or by $ENV{PERL_UTF8_LOCALE}. */
1359 if (PL_utf8locale && PL_wantutf8) { /* Requires init_predump_symbols(). */
1363 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
1364 * _and_ the default open discipline. */
1365 if (PL_stdingv && (io = GvIO(PL_stdingv)) && (fp = IoIFP(io)))
1366 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
1367 if (PL_defoutgv && (io = GvIO(PL_defoutgv)) && (fp = IoOFP(io)))
1368 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
1369 if (PL_stderrgv && (io = GvIO(PL_stderrgv)) && (fp = IoOFP(io)))
1370 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
1371 if ((sv = GvSV(gv_fetchpv("\017PEN", TRUE, SVt_PV)))) {
1372 sv_setpvn(sv, ":utf8\0:utf8", 11);
1379 /* now parse the script */
1381 SETERRNO(0,SS_NORMAL);
1383 #ifdef MACOS_TRADITIONAL
1384 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1386 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1388 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1389 MacPerl_MPWFileName(PL_origfilename));
1393 if (yyparse() || PL_error_count) {
1395 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
1397 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1402 CopLINE_set(PL_curcop, 0);
1403 PL_curstash = PL_defstash;
1404 PL_preprocess = FALSE;
1406 SvREFCNT_dec(PL_e_script);
1407 PL_e_script = Nullsv;
1414 SAVECOPFILE(PL_curcop);
1415 SAVECOPLINE(PL_curcop);
1416 gv_check(PL_defstash);
1423 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1424 dump_mstats("after compilation:");
1433 =for apidoc perl_run
1435 Tells a Perl interpreter to run. See L<perlembed>.
1446 #ifdef USE_5005THREADS
1450 oldscope = PL_scopestack_ix;
1455 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1457 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1463 cxstack_ix = -1; /* start context stack again */
1465 case 0: /* normal completion */
1466 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1471 case 2: /* my_exit() */
1472 while (PL_scopestack_ix > oldscope)
1475 PL_curstash = PL_defstash;
1476 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
1477 PL_endav && !PL_minus_c)
1478 call_list(oldscope, PL_endav);
1480 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1481 dump_mstats("after execution: ");
1483 ret = STATUS_NATIVE_EXPORT;
1487 POPSTACK_TO(PL_mainstack);
1490 PerlIO_printf(Perl_error_log, "panic: restartop\n");
1500 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1502 S_vrun_body(pTHX_ va_list args)
1504 I32 oldscope = va_arg(args, I32);
1506 return run_body(oldscope);
1512 S_run_body(pTHX_ I32 oldscope)
1514 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
1515 PL_sawampersand ? "Enabling" : "Omitting"));
1517 if (!PL_restartop) {
1518 DEBUG_x(dump_all());
1519 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
1520 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1524 #ifdef MACOS_TRADITIONAL
1525 PerlIO_printf(Perl_error_log, "%s%s syntax OK\n",
1526 (gMacPerl_ErrorFormat ? "# " : ""),
1527 MacPerl_MPWFileName(PL_origfilename));
1529 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
1533 if (PERLDB_SINGLE && PL_DBsingle)
1534 sv_setiv(PL_DBsingle, 1);
1536 call_list(oldscope, PL_initav);
1542 PL_op = PL_restartop;
1546 else if (PL_main_start) {
1547 CvDEPTH(PL_main_cv) = 1;
1548 PL_op = PL_main_start;
1558 =head1 SV Manipulation Functions
1560 =for apidoc p||get_sv
1562 Returns the SV of the specified Perl scalar. 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_sv(pTHX_ const char *name, I32 create)
1573 #ifdef USE_5005THREADS
1574 if (name[1] == '\0' && !isALPHA(name[0])) {
1575 PADOFFSET tmp = find_threadsv(name);
1576 if (tmp != NOT_IN_PAD)
1577 return THREADSV(tmp);
1579 #endif /* USE_5005THREADS */
1580 gv = gv_fetchpv(name, create, SVt_PV);
1587 =head1 Array Manipulation Functions
1589 =for apidoc p||get_av
1591 Returns the AV of the specified Perl array. If C<create> is set and the
1592 Perl variable does not exist then it will be created. If C<create> is not
1593 set and the variable does not exist then NULL is returned.
1599 Perl_get_av(pTHX_ const char *name, I32 create)
1601 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1610 =head1 Hash Manipulation Functions
1612 =for apidoc p||get_hv
1614 Returns the HV of the specified Perl hash. If C<create> is set and the
1615 Perl variable does not exist then it will be created. If C<create> is not
1616 set and the variable does not exist then NULL is returned.
1622 Perl_get_hv(pTHX_ const char *name, I32 create)
1624 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1633 =head1 CV Manipulation Functions
1635 =for apidoc p||get_cv
1637 Returns the CV of the specified Perl subroutine. If C<create> is set and
1638 the Perl subroutine does not exist then it will be declared (which has the
1639 same effect as saying C<sub name;>). If C<create> is not set and the
1640 subroutine does not exist then NULL is returned.
1646 Perl_get_cv(pTHX_ const char *name, I32 create)
1648 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
1649 /* XXX unsafe for threads if eval_owner isn't held */
1650 /* XXX this is probably not what they think they're getting.
1651 * It has the same effect as "sub name;", i.e. just a forward
1653 if (create && !GvCVu(gv))
1654 return newSUB(start_subparse(FALSE, 0),
1655 newSVOP(OP_CONST, 0, newSVpv(name,0)),
1663 /* Be sure to refetch the stack pointer after calling these routines. */
1667 =head1 Callback Functions
1669 =for apidoc p||call_argv
1671 Performs a callback to the specified Perl sub. See L<perlcall>.
1677 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
1679 /* See G_* flags in cop.h */
1680 /* null terminated arg list */
1687 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
1692 return call_pv(sub_name, flags);
1696 =for apidoc p||call_pv
1698 Performs a callback to the specified Perl sub. See L<perlcall>.
1704 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
1705 /* name of the subroutine */
1706 /* See G_* flags in cop.h */
1708 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
1712 =for apidoc p||call_method
1714 Performs a callback to the specified Perl method. The blessed object must
1715 be on the stack. See L<perlcall>.
1721 Perl_call_method(pTHX_ const char *methname, I32 flags)
1722 /* name of the subroutine */
1723 /* See G_* flags in cop.h */
1725 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
1728 /* May be called with any of a CV, a GV, or an SV containing the name. */
1730 =for apidoc p||call_sv
1732 Performs a callback to the Perl sub whose name is in the SV. See
1739 Perl_call_sv(pTHX_ SV *sv, I32 flags)
1740 /* See G_* flags in cop.h */
1743 LOGOP myop; /* fake syntax tree node */
1746 volatile I32 retval = 0;
1748 bool oldcatch = CATCH_GET;
1753 if (flags & G_DISCARD) {
1758 Zero(&myop, 1, LOGOP);
1759 myop.op_next = Nullop;
1760 if (!(flags & G_NOARGS))
1761 myop.op_flags |= OPf_STACKED;
1762 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1763 (flags & G_ARRAY) ? OPf_WANT_LIST :
1768 EXTEND(PL_stack_sp, 1);
1769 *++PL_stack_sp = sv;
1771 oldscope = PL_scopestack_ix;
1773 if (PERLDB_SUB && PL_curstash != PL_debstash
1774 /* Handle first BEGIN of -d. */
1775 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
1776 /* Try harder, since this may have been a sighandler, thus
1777 * curstash may be meaningless. */
1778 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
1779 && !(flags & G_NODEBUG))
1780 PL_op->op_private |= OPpENTERSUB_DB;
1782 if (flags & G_METHOD) {
1783 Zero(&method_op, 1, UNOP);
1784 method_op.op_next = PL_op;
1785 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1786 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
1787 PL_op = (OP*)&method_op;
1790 if (!(flags & G_EVAL)) {
1792 call_body((OP*)&myop, FALSE);
1793 retval = PL_stack_sp - (PL_stack_base + oldmark);
1794 CATCH_SET(oldcatch);
1797 myop.op_other = (OP*)&myop;
1799 /* we're trying to emulate pp_entertry() here */
1801 register PERL_CONTEXT *cx;
1802 I32 gimme = GIMME_V;
1807 push_return(Nullop);
1808 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
1810 PL_eval_root = PL_op; /* Only needed so that goto works right. */
1812 PL_in_eval = EVAL_INEVAL;
1813 if (flags & G_KEEPERR)
1814 PL_in_eval |= EVAL_KEEPERR;
1820 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1822 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1829 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1831 call_body((OP*)&myop, FALSE);
1833 retval = PL_stack_sp - (PL_stack_base + oldmark);
1834 if (!(flags & G_KEEPERR))
1841 /* my_exit() was called */
1842 PL_curstash = PL_defstash;
1845 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1846 Perl_croak(aTHX_ "Callback called exit");
1851 PL_op = PL_restartop;
1855 PL_stack_sp = PL_stack_base + oldmark;
1856 if (flags & G_ARRAY)
1860 *++PL_stack_sp = &PL_sv_undef;
1865 if (PL_scopestack_ix > oldscope) {
1869 register PERL_CONTEXT *cx;
1881 if (flags & G_DISCARD) {
1882 PL_stack_sp = PL_stack_base + oldmark;
1891 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1893 S_vcall_body(pTHX_ va_list args)
1895 OP *myop = va_arg(args, OP*);
1896 int is_eval = va_arg(args, int);
1898 call_body(myop, is_eval);
1904 S_call_body(pTHX_ OP *myop, int is_eval)
1906 if (PL_op == myop) {
1908 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
1910 PL_op = Perl_pp_entersub(aTHX); /* this does */
1916 /* Eval a string. The G_EVAL flag is always assumed. */
1919 =for apidoc p||eval_sv
1921 Tells Perl to C<eval> the string in the SV.
1927 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
1929 /* See G_* flags in cop.h */
1932 UNOP myop; /* fake syntax tree node */
1933 volatile I32 oldmark = SP - PL_stack_base;
1934 volatile I32 retval = 0;
1940 if (flags & G_DISCARD) {
1947 Zero(PL_op, 1, UNOP);
1948 EXTEND(PL_stack_sp, 1);
1949 *++PL_stack_sp = sv;
1950 oldscope = PL_scopestack_ix;
1952 if (!(flags & G_NOARGS))
1953 myop.op_flags = OPf_STACKED;
1954 myop.op_next = Nullop;
1955 myop.op_type = OP_ENTEREVAL;
1956 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1957 (flags & G_ARRAY) ? OPf_WANT_LIST :
1959 if (flags & G_KEEPERR)
1960 myop.op_flags |= OPf_SPECIAL;
1962 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1964 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1971 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1973 call_body((OP*)&myop,TRUE);
1975 retval = PL_stack_sp - (PL_stack_base + oldmark);
1976 if (!(flags & G_KEEPERR))
1983 /* my_exit() was called */
1984 PL_curstash = PL_defstash;
1987 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1988 Perl_croak(aTHX_ "Callback called exit");
1993 PL_op = PL_restartop;
1997 PL_stack_sp = PL_stack_base + oldmark;
1998 if (flags & G_ARRAY)
2002 *++PL_stack_sp = &PL_sv_undef;
2008 if (flags & G_DISCARD) {
2009 PL_stack_sp = PL_stack_base + oldmark;
2019 =for apidoc p||eval_pv
2021 Tells Perl to C<eval> the given string and return an SV* result.
2027 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
2030 SV* sv = newSVpv(p, 0);
2032 eval_sv(sv, G_SCALAR);
2039 if (croak_on_error && SvTRUE(ERRSV)) {
2041 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
2047 /* Require a module. */
2050 =head1 Embedding Functions
2052 =for apidoc p||require_pv
2054 Tells Perl to C<require> the file named by the string argument. It is
2055 analogous to the Perl code C<eval "require '$file'">. It's even
2056 implemented that way; consider using Perl_load_module instead.
2061 Perl_require_pv(pTHX_ const char *pv)
2065 PUSHSTACKi(PERLSI_REQUIRE);
2067 sv = sv_newmortal();
2068 sv_setpv(sv, "require '");
2071 eval_sv(sv, G_DISCARD);
2077 Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
2081 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
2082 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
2086 S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
2088 /* This message really ought to be max 23 lines.
2089 * Removed -h because the user already knows that option. Others? */
2091 static char *usage_msg[] = {
2092 "-0[octal] specify record separator (\\0, if no argument)",
2093 "-a autosplit mode with -n or -p (splits $_ into @F)",
2094 "-C enable native wide character system interfaces",
2095 "-c check syntax only (runs BEGIN and CHECK blocks)",
2096 "-d[:debugger] run program under debugger",
2097 "-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2098 "-e 'command' one line of program (several -e's allowed, omit programfile)",
2099 "-F/pattern/ split() pattern for -a switch (//'s are optional)",
2100 "-i[extension] edit <> files in place (makes backup if extension supplied)",
2101 "-Idirectory specify @INC/#include directory (several -I's allowed)",
2102 "-l[octal] enable line ending processing, specifies line terminator",
2103 "-[mM][-]module execute `use/no module...' before executing program",
2104 "-n assume 'while (<>) { ... }' loop around program",
2105 "-p assume loop like -n but print line also, like sed",
2106 "-P run program through C preprocessor before compilation",
2107 "-s enable rudimentary parsing for switches after programfile",
2108 "-S look for programfile using PATH environment variable",
2109 "-T enable tainting checks",
2110 "-t enable tainting warnings",
2111 "-u dump core after parsing program",
2112 "-U allow unsafe operations",
2113 "-v print version, subversion (includes VERY IMPORTANT perl info)",
2114 "-V[:variable] print configuration summary (or a single Config.pm variable)",
2115 "-w enable many useful warnings (RECOMMENDED)",
2116 "-W enable all warnings",
2117 "-X disable all warnings",
2118 "-x[directory] strip off text before #!perl line and perhaps cd to directory",
2122 char **p = usage_msg;
2124 PerlIO_printf(PerlIO_stdout(),
2125 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2128 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
2131 /* This routine handles any switches that can be given during run */
2134 Perl_moreswitches(pTHX_ char *s)
2144 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
2145 SvREFCNT_dec(PL_rs);
2146 if (rschar & ~((U8)~0))
2147 PL_rs = &PL_sv_undef;
2148 else if (!rschar && numlen >= 2)
2149 PL_rs = newSVpvn("", 0);
2151 char ch = (char)rschar;
2152 PL_rs = newSVpvn(&ch, 1);
2157 PL_wantutf8 = TRUE; /* Can be set earlier by $ENV{PERL_UTF8_LOCALE}. */
2163 while (*s && !isSPACE(*s)) ++s;
2165 PL_splitstr = savepv(PL_splitstr);
2178 /* The following permits -d:Mod to accepts arguments following an =
2179 in the fashion that -MSome::Mod does. */
2180 if (*s == ':' || *s == '=') {
2183 sv = newSVpv("use Devel::", 0);
2185 /* We now allow -d:Module=Foo,Bar */
2186 while(isALNUM(*s) || *s==':') ++s;
2188 sv_catpv(sv, start);
2190 sv_catpvn(sv, start, s-start);
2191 sv_catpv(sv, " split(/,/,q{");
2196 my_setenv("PERL5DB", SvPV(sv, PL_na));
2199 PL_perldb = PERLDB_ALL;
2207 if (isALPHA(s[1])) {
2208 /* if adding extra options, remember to update DEBUG_MASK */
2209 static char debopts[] = "psltocPmfrxu HXDSTRJvC";
2212 for (s++; *s && (d = strchr(debopts,*s)); s++)
2213 PL_debug |= 1 << (d - debopts);
2216 PL_debug = atoi(s+1);
2217 for (s++; isDIGIT(*s); s++) ;
2220 if (DEBUG_p_TEST_ && ckWARN_d(WARN_DEBUGGING))
2221 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2222 "-Dp not implemented on this platform\n");
2224 PL_debug |= DEBUG_TOP_FLAG;
2225 #else /* !DEBUGGING */
2226 if (ckWARN_d(WARN_DEBUGGING))
2227 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2228 "Recompile perl with -DDEBUGGING to use -D switch\n");
2229 for (s++; isALNUM(*s); s++) ;
2235 usage(PL_origargv[0]);
2239 Safefree(PL_inplace);
2240 #if defined(__CYGWIN__) /* do backup extension automagically */
2241 if (*(s+1) == '\0') {
2242 PL_inplace = savepv(".bak");
2245 #endif /* __CYGWIN__ */
2246 PL_inplace = savepv(s+1);
2248 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
2251 if (*s == '-') /* Additional switches on #! line. */
2255 case 'I': /* -I handled both here and in parse_body() */
2258 while (*s && isSPACE(*s))
2263 /* ignore trailing spaces (possibly followed by other switches) */
2265 for (e = p; *e && !isSPACE(*e); e++) ;
2269 } while (*p && *p != '-');
2270 e = savepvn(s, e-s);
2271 incpush(e, TRUE, TRUE, FALSE);
2278 Perl_croak(aTHX_ "No directory specified for -I");
2284 SvREFCNT_dec(PL_ors_sv);
2289 PL_ors_sv = newSVpvn("\n",1);
2290 numlen = 3 + (*s == '0');
2291 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
2295 if (RsPARA(PL_rs)) {
2296 PL_ors_sv = newSVpvn("\n\n",2);
2299 PL_ors_sv = newSVsv(PL_rs);
2304 forbid_setid("-M"); /* XXX ? */
2307 forbid_setid("-m"); /* XXX ? */
2312 /* -M-foo == 'no foo' */
2313 if (*s == '-') { use = "no "; ++s; }
2314 sv = newSVpv(use,0);
2316 /* We allow -M'Module qw(Foo Bar)' */
2317 while(isALNUM(*s) || *s==':') ++s;
2319 sv_catpv(sv, start);
2320 if (*(start-1) == 'm') {
2322 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
2323 sv_catpv( sv, " ()");
2327 Perl_croak(aTHX_ "Module name required with -%c option",
2329 sv_catpvn(sv, start, s-start);
2330 sv_catpv(sv, " split(/,/,q{");
2336 PL_preambleav = newAV();
2337 av_push(PL_preambleav, sv);
2340 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
2352 PL_doswitches = TRUE;
2357 Perl_croak(aTHX_ "Too late for \"-t\" option");
2362 Perl_croak(aTHX_ "Too late for \"-T\" option");
2366 #ifdef MACOS_TRADITIONAL
2367 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2369 PL_do_undump = TRUE;
2378 PerlIO_printf(PerlIO_stdout(),
2379 Perl_form(aTHX_ "\nThis is perl, v%"VDf" built for %s",
2380 PL_patchlevel, ARCHNAME));
2382 /* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
2383 PerlIO_printf(PerlIO_stdout(),
2384 Perl_form(aTHX_ "\nThis is perl, version %vd\n", PL_patchlevel));
2385 PerlIO_printf(PerlIO_stdout(),
2386 Perl_form(aTHX_ " built under %s at %s %s\n",
2387 OSNAME, __DATE__, __TIME__));
2388 PerlIO_printf(PerlIO_stdout(),
2389 Perl_form(aTHX_ " OS Specific Release: %s\n",
2393 #if defined(LOCAL_PATCH_COUNT)
2394 if (LOCAL_PATCH_COUNT > 0)
2395 PerlIO_printf(PerlIO_stdout(),
2396 "\n(with %d registered patch%s, "
2397 "see perl -V for more detail)",
2398 (int)LOCAL_PATCH_COUNT,
2399 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
2402 PerlIO_printf(PerlIO_stdout(),
2403 "\n\nCopyright 1987-2002, Larry Wall\n");
2404 #ifdef MACOS_TRADITIONAL
2405 PerlIO_printf(PerlIO_stdout(),
2406 "\nMac OS port Copyright 1991-2002, Matthias Neeracher;\n"
2407 "maintained by Chris Nandor\n");
2410 PerlIO_printf(PerlIO_stdout(),
2411 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
2414 PerlIO_printf(PerlIO_stdout(),
2415 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2416 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
2419 PerlIO_printf(PerlIO_stdout(),
2420 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2421 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
2424 PerlIO_printf(PerlIO_stdout(),
2425 "atariST series port, ++jrb bammi@cadence.com\n");
2428 PerlIO_printf(PerlIO_stdout(),
2429 "BeOS port Copyright Tom Spindler, 1997-1999\n");
2432 PerlIO_printf(PerlIO_stdout(),
2433 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2002\n");
2436 PerlIO_printf(PerlIO_stdout(),
2437 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
2440 PerlIO_printf(PerlIO_stdout(),
2441 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
2444 PerlIO_printf(PerlIO_stdout(),
2445 "VM/ESA port by Neale Ferguson, 1998-1999\n");
2448 PerlIO_printf(PerlIO_stdout(),
2449 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
2452 PerlIO_printf(PerlIO_stdout(),
2453 "MiNT port by Guido Flohr, 1997-1999\n");
2456 PerlIO_printf(PerlIO_stdout(),
2457 "EPOC port by Olaf Flebbe, 1999-2002\n");
2460 printf("WINCE port by Rainer Keuchel, 2001-2002\n");
2461 printf("Built on " __DATE__ " " __TIME__ "\n\n");
2464 #ifdef BINARY_BUILD_NOTICE
2465 BINARY_BUILD_NOTICE;
2467 PerlIO_printf(PerlIO_stdout(),
2469 Perl may be copied only under the terms of either the Artistic License or the\n\
2470 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
2471 Complete documentation for Perl, including FAQ lists, should be found on\n\
2472 this system using `man perl' or `perldoc perl'. If you have access to the\n\
2473 Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
2476 if (! (PL_dowarn & G_WARN_ALL_MASK))
2477 PL_dowarn |= G_WARN_ON;
2481 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
2482 if (!specialWARN(PL_compiling.cop_warnings))
2483 SvREFCNT_dec(PL_compiling.cop_warnings);
2484 PL_compiling.cop_warnings = pWARN_ALL ;
2488 PL_dowarn = G_WARN_ALL_OFF;
2489 if (!specialWARN(PL_compiling.cop_warnings))
2490 SvREFCNT_dec(PL_compiling.cop_warnings);
2491 PL_compiling.cop_warnings = pWARN_NONE ;
2496 if (s[1] == '-') /* Additional switches on #! line. */
2501 #if defined(WIN32) || !defined(PERL_STRICT_CR)
2507 #ifdef ALTERNATE_SHEBANG
2508 case 'S': /* OS/2 needs -S on "extproc" line. */
2516 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
2521 /* compliments of Tom Christiansen */
2523 /* unexec() can be found in the Gnu emacs distribution */
2524 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
2527 Perl_my_unexec(pTHX)
2535 prog = newSVpv(BIN_EXP, 0);
2536 sv_catpv(prog, "/perl");
2537 file = newSVpv(PL_origfilename, 0);
2538 sv_catpv(file, ".perldump");
2540 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2541 /* unexec prints msg to stderr in case of failure */
2542 PerlProc_exit(status);
2545 # include <lib$routines.h>
2546 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
2548 ABORT(); /* for use with undump */
2553 /* initialize curinterp */
2559 # define PERLVAR(var,type)
2560 # define PERLVARA(var,n,type)
2561 # if defined(PERL_IMPLICIT_CONTEXT)
2562 # if defined(USE_5005THREADS)
2563 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2564 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2565 # else /* !USE_5005THREADS */
2566 # define PERLVARI(var,type,init) aTHX->var = init;
2567 # define PERLVARIC(var,type,init) aTHX->var = init;
2568 # endif /* USE_5005THREADS */
2570 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2571 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2573 # include "intrpvar.h"
2574 # ifndef USE_5005THREADS
2575 # include "thrdvar.h"
2582 # define PERLVAR(var,type)
2583 # define PERLVARA(var,n,type)
2584 # define PERLVARI(var,type,init) PL_##var = init;
2585 # define PERLVARIC(var,type,init) PL_##var = init;
2586 # include "intrpvar.h"
2587 # ifndef USE_5005THREADS
2588 # include "thrdvar.h"
2599 S_init_main_stash(pTHX)
2603 PL_curstash = PL_defstash = newHV();
2604 PL_curstname = newSVpvn("main",4);
2605 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2606 SvREFCNT_dec(GvHV(gv));
2607 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
2609 HvNAME(PL_defstash) = savepv("main");
2610 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2611 GvMULTI_on(PL_incgv);
2612 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2613 GvMULTI_on(PL_hintgv);
2614 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2615 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2616 GvMULTI_on(PL_errgv);
2617 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2618 GvMULTI_on(PL_replgv);
2619 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
2620 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2621 sv_setpvn(ERRSV, "", 0);
2622 PL_curstash = PL_defstash;
2623 CopSTASH_set(&PL_compiling, PL_defstash);
2624 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
2625 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
2626 /* We must init $/ before switches are processed. */
2627 sv_setpvn(get_sv("/", TRUE), "\n", 1);
2631 S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
2635 char *cpp_discard_flag;
2641 PL_origfilename = savepv("-e");
2644 /* if find_script() returns, it returns a malloc()-ed value */
2645 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
2647 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2648 char *s = scriptname + 8;
2649 *fdscript = atoi(s);
2653 scriptname = savepv(s + 1);
2654 Safefree(PL_origfilename);
2655 PL_origfilename = scriptname;
2660 CopFILE_free(PL_curcop);
2661 CopFILE_set(PL_curcop, PL_origfilename);
2662 if (strEQ(PL_origfilename,"-"))
2664 if (*fdscript >= 0) {
2665 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
2666 # if defined(HAS_FCNTL) && defined(F_SETFD)
2668 /* ensure close-on-exec */
2669 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1);
2672 else if (PL_preprocess) {
2673 char *cpp_cfg = CPPSTDIN;
2674 SV *cpp = newSVpvn("",0);
2675 SV *cmd = NEWSV(0,0);
2677 if (strEQ(cpp_cfg, "cppstdin"))
2678 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
2679 sv_catpv(cpp, cpp_cfg);
2682 sv_catpvn(sv, "-I", 2);
2683 sv_catpv(sv,PRIVLIB_EXP);
2686 DEBUG_P(PerlIO_printf(Perl_debug_log,
2687 "PL_preprocess: scriptname=\"%s\", cpp=\"%s\", sv=\"%s\", CPPMINUS=\"%s\"\n",
2688 scriptname, SvPVX (cpp), SvPVX (sv), CPPMINUS));
2690 # if defined(MSDOS) || defined(WIN32) || defined(VMS)
2697 cpp_discard_flag = "";
2699 cpp_discard_flag = "-C";
2703 perl = os2_execname(aTHX);
2705 perl = PL_origargv[0];
2709 /* This strips off Perl comments which might interfere with
2710 the C pre-processor, including #!. #line directives are
2711 deliberately stripped to avoid confusion with Perl's version
2712 of #line. FWP played some golf with it so it will fit
2713 into VMS's 255 character buffer.
2716 code = "(1../^#!.*perl/i)|/^\\s*#(?!\\s*((ifn?|un)def|(el|end)?if|define|include|else|error|pragma)\\b)/||!($|=1)||print";
2718 code = "/^\\s*#(?!\\s*((ifn?|un)def|(el|end)?if|define|include|else|error|pragma)\\b)/||!($|=1)||print";
2720 Perl_sv_setpvf(aTHX_ cmd, "\
2721 %s -ne%s%s%s %s | %"SVf" %s %"SVf" %s",
2722 perl, quote, code, quote, scriptname, cpp,
2723 cpp_discard_flag, sv, CPPMINUS);
2725 PL_doextract = FALSE;
2726 # ifdef IAMSUID /* actually, this is caught earlier */
2727 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
2729 (void)seteuid(PL_uid); /* musn't stay setuid root */
2731 # ifdef HAS_SETREUID
2732 (void)setreuid((Uid_t)-1, PL_uid);
2734 # ifdef HAS_SETRESUID
2735 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
2737 PerlProc_setuid(PL_uid);
2741 if (PerlProc_geteuid() != PL_uid)
2742 Perl_croak(aTHX_ "Can't do seteuid!\n");
2744 # endif /* IAMSUID */
2746 DEBUG_P(PerlIO_printf(Perl_debug_log,
2747 "PL_preprocess: cmd=\"%s\"\n",
2750 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
2754 else if (!*scriptname) {
2755 forbid_setid("program input from stdin");
2756 PL_rsfp = PerlIO_stdin();
2759 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
2760 # if defined(HAS_FCNTL) && defined(F_SETFD)
2762 /* ensure close-on-exec */
2763 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1);
2768 # ifndef IAMSUID /* in case script is not readable before setuid */
2770 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
2771 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2774 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT,
2775 BIN_EXP, (int)PERL_REVISION,
2777 (int)PERL_SUBVERSION), PL_origargv);
2778 Perl_croak(aTHX_ "Can't do setuid\n");
2784 Perl_croak(aTHX_ "Can't open perl script: %s\n",
2787 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
2788 CopFILE(PL_curcop), Strerror(errno));
2794 * I_SYSSTATVFS HAS_FSTATVFS
2796 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
2797 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2798 * here so that metaconfig picks them up. */
2802 S_fd_on_nosuid_fs(pTHX_ int fd)
2804 int check_okay = 0; /* able to do all the required sys/libcalls */
2805 int on_nosuid = 0; /* the fd is on a nosuid fs */
2807 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
2808 * fstatvfs() is UNIX98.
2809 * fstatfs() is 4.3 BSD.
2810 * ustat()+getmnt() is pre-4.3 BSD.
2811 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2812 * an irrelevant filesystem while trying to reach the right one.
2815 #undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2817 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2818 defined(HAS_FSTATVFS)
2819 # define FD_ON_NOSUID_CHECK_OKAY
2820 struct statvfs stfs;
2822 check_okay = fstatvfs(fd, &stfs) == 0;
2823 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
2824 # endif /* fstatvfs */
2826 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2827 defined(PERL_MOUNT_NOSUID) && \
2828 defined(HAS_FSTATFS) && \
2829 defined(HAS_STRUCT_STATFS) && \
2830 defined(HAS_STRUCT_STATFS_F_FLAGS)
2831 # define FD_ON_NOSUID_CHECK_OKAY
2834 check_okay = fstatfs(fd, &stfs) == 0;
2835 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
2836 # endif /* fstatfs */
2838 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2839 defined(PERL_MOUNT_NOSUID) && \
2840 defined(HAS_FSTAT) && \
2841 defined(HAS_USTAT) && \
2842 defined(HAS_GETMNT) && \
2843 defined(HAS_STRUCT_FS_DATA) && \
2845 # define FD_ON_NOSUID_CHECK_OKAY
2848 if (fstat(fd, &fdst) == 0) {
2850 if (ustat(fdst.st_dev, &us) == 0) {
2852 /* NOSTAT_ONE here because we're not examining fields which
2853 * vary between that case and STAT_ONE. */
2854 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
2855 size_t cmplen = sizeof(us.f_fname);
2856 if (sizeof(fsd.fd_req.path) < cmplen)
2857 cmplen = sizeof(fsd.fd_req.path);
2858 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2859 fdst.st_dev == fsd.fd_req.dev) {
2861 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2867 # endif /* fstat+ustat+getmnt */
2869 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2870 defined(HAS_GETMNTENT) && \
2871 defined(HAS_HASMNTOPT) && \
2872 defined(MNTOPT_NOSUID)
2873 # define FD_ON_NOSUID_CHECK_OKAY
2874 FILE *mtab = fopen("/etc/mtab", "r");
2875 struct mntent *entry;
2878 if (mtab && (fstat(fd, &stb) == 0)) {
2879 while (entry = getmntent(mtab)) {
2880 if (stat(entry->mnt_dir, &fsb) == 0
2881 && fsb.st_dev == stb.st_dev)
2883 /* found the filesystem */
2885 if (hasmntopt(entry, MNTOPT_NOSUID))
2888 } /* A single fs may well fail its stat(). */
2893 # endif /* getmntent+hasmntopt */
2896 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
2899 #endif /* IAMSUID */
2902 S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
2908 /* do we need to emulate setuid on scripts? */
2910 /* This code is for those BSD systems that have setuid #! scripts disabled
2911 * in the kernel because of a security problem. Merely defining DOSUID
2912 * in perl will not fix that problem, but if you have disabled setuid
2913 * scripts in the kernel, this will attempt to emulate setuid and setgid
2914 * on scripts that have those now-otherwise-useless bits set. The setuid
2915 * root version must be called suidperl or sperlN.NNN. If regular perl
2916 * discovers that it has opened a setuid script, it calls suidperl with
2917 * the same argv that it had. If suidperl finds that the script it has
2918 * just opened is NOT setuid root, it sets the effective uid back to the
2919 * uid. We don't just make perl setuid root because that loses the
2920 * effective uid we had before invoking perl, if it was different from the
2923 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2924 * be defined in suidperl only. suidperl must be setuid root. The
2925 * Configure script will set this up for you if you want it.
2931 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
2932 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
2933 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
2938 #ifndef HAS_SETREUID
2939 /* On this access check to make sure the directories are readable,
2940 * there is actually a small window that the user could use to make
2941 * filename point to an accessible directory. So there is a faint
2942 * chance that someone could execute a setuid script down in a
2943 * non-accessible directory. I don't know what to do about that.
2944 * But I don't think it's too important. The manual lies when
2945 * it says access() is useful in setuid programs.
2947 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
2948 Perl_croak(aTHX_ "Permission denied");
2950 /* If we can swap euid and uid, then we can determine access rights
2951 * with a simple stat of the file, and then compare device and
2952 * inode to make sure we did stat() on the same file we opened.
2953 * Then we just have to make sure he or she can execute it.
2960 setreuid(PL_euid,PL_uid) < 0
2963 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
2966 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
2967 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
2968 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
2969 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
2970 #if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
2971 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
2972 Perl_croak(aTHX_ "Permission denied");
2974 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
2975 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
2976 (void)PerlIO_close(PL_rsfp);
2977 Perl_croak(aTHX_ "Permission denied\n");
2981 setreuid(PL_uid,PL_euid) < 0
2983 # if defined(HAS_SETRESUID)
2984 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
2987 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
2988 Perl_croak(aTHX_ "Can't reswap uid and euid");
2989 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
2990 Perl_croak(aTHX_ "Permission denied\n");
2992 #endif /* HAS_SETREUID */
2993 #endif /* IAMSUID */
2995 if (!S_ISREG(PL_statbuf.st_mode))
2996 Perl_croak(aTHX_ "Permission denied");
2997 if (PL_statbuf.st_mode & S_IWOTH)
2998 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
2999 PL_doswitches = FALSE; /* -s is insecure in suid */
3000 CopLINE_inc(PL_curcop);
3001 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
3002 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
3003 Perl_croak(aTHX_ "No #! line");
3004 s = SvPV(PL_linestr,n_a)+2;
3006 while (!isSPACE(*s)) s++;
3007 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
3008 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
3009 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
3010 Perl_croak(aTHX_ "Not a perl script");
3011 while (*s == ' ' || *s == '\t') s++;
3013 * #! arg must be what we saw above. They can invoke it by
3014 * mentioning suidperl explicitly, but they may not add any strange
3015 * arguments beyond what #! says if they do invoke suidperl that way.
3017 len = strlen(validarg);
3018 if (strEQ(validarg," PHOOEY ") ||
3019 strnNE(s,validarg,len) || !isSPACE(s[len]))
3020 Perl_croak(aTHX_ "Args must match #! line");
3023 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
3024 PL_euid == PL_statbuf.st_uid)
3026 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3027 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3028 #endif /* IAMSUID */
3030 if (PL_euid) { /* oops, we're not the setuid root perl */
3031 (void)PerlIO_close(PL_rsfp);
3034 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
3035 (int)PERL_REVISION, (int)PERL_VERSION,
3036 (int)PERL_SUBVERSION), PL_origargv);
3038 Perl_croak(aTHX_ "Can't do setuid\n");
3041 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
3043 (void)setegid(PL_statbuf.st_gid);
3046 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
3048 #ifdef HAS_SETRESGID
3049 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
3051 PerlProc_setgid(PL_statbuf.st_gid);
3055 if (PerlProc_getegid() != PL_statbuf.st_gid)
3056 Perl_croak(aTHX_ "Can't do setegid!\n");
3058 if (PL_statbuf.st_mode & S_ISUID) {
3059 if (PL_statbuf.st_uid != PL_euid)
3061 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
3064 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
3066 #ifdef HAS_SETRESUID
3067 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
3069 PerlProc_setuid(PL_statbuf.st_uid);
3073 if (PerlProc_geteuid() != PL_statbuf.st_uid)
3074 Perl_croak(aTHX_ "Can't do seteuid!\n");
3076 else if (PL_uid) { /* oops, mustn't run as root */
3078 (void)seteuid((Uid_t)PL_uid);
3081 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
3083 #ifdef HAS_SETRESUID
3084 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
3086 PerlProc_setuid((Uid_t)PL_uid);
3090 if (PerlProc_geteuid() != PL_uid)
3091 Perl_croak(aTHX_ "Can't do seteuid!\n");
3094 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
3095 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
3098 else if (PL_preprocess)
3099 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
3100 else if (fdscript >= 0)
3101 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
3103 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
3105 /* We absolutely must clear out any saved ids here, so we */
3106 /* exec the real perl, substituting fd script for scriptname. */
3107 /* (We pass script name as "subdir" of fd, which perl will grok.) */
3108 PerlIO_rewind(PL_rsfp);
3109 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
3110 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3111 if (!PL_origargv[which])
3112 Perl_croak(aTHX_ "Permission denied");
3113 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
3114 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
3115 #if defined(HAS_FCNTL) && defined(F_SETFD)
3116 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
3118 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
3119 (int)PERL_REVISION, (int)PERL_VERSION,
3120 (int)PERL_SUBVERSION), PL_origargv);/* try again */
3121 Perl_croak(aTHX_ "Can't do setuid\n");
3122 #endif /* IAMSUID */
3124 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
3125 #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
3126 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3127 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3129 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3132 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3133 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3134 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3135 /* not set-id, must be wrapped */
3141 S_find_beginning(pTHX)
3143 register char *s, *s2;
3144 #ifdef MACOS_TRADITIONAL
3148 /* skip forward in input to the real script? */
3151 #ifdef MACOS_TRADITIONAL
3152 /* Since the Mac OS does not honor #! arguments for us, we do it ourselves */
3154 while (PL_doextract || gMacPerl_AlwaysExtract) {
3155 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3156 if (!gMacPerl_AlwaysExtract)
3157 Perl_croak(aTHX_ "No Perl script found in input\n");
3159 if (PL_doextract) /* require explicit override ? */
3160 if (!OverrideExtract(PL_origfilename))
3161 Perl_croak(aTHX_ "User aborted script\n");
3163 PL_doextract = FALSE;
3165 /* Pater peccavi, file does not have #! */
3166 PerlIO_rewind(PL_rsfp);
3171 while (PL_doextract) {
3172 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
3173 Perl_croak(aTHX_ "No Perl script found in input\n");
3176 if (*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))) {
3177 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3178 PL_doextract = FALSE;
3179 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3181 while (*s == ' ' || *s == '\t') s++;
3183 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3184 if (strnEQ(s2-4,"perl",4))
3186 while ((s = moreswitches(s)))
3189 #ifdef MACOS_TRADITIONAL
3190 /* We are always searching for the #!perl line in MacPerl,
3191 * so if we find it, still keep the line count correct
3192 * by counting lines we already skipped over
3194 for (; maclines > 0 ; maclines--)
3195 PerlIO_ungetc(PL_rsfp, '\n');
3199 /* gMacPerl_AlwaysExtract is false in MPW tool */
3200 } else if (gMacPerl_AlwaysExtract) {
3211 PL_uid = PerlProc_getuid();
3212 PL_euid = PerlProc_geteuid();
3213 PL_gid = PerlProc_getgid();
3214 PL_egid = PerlProc_getegid();
3216 PL_uid |= PL_gid << 16;
3217 PL_euid |= PL_egid << 16;
3219 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3223 S_forbid_setid(pTHX_ char *s)
3225 if (PL_euid != PL_uid)
3226 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3227 if (PL_egid != PL_gid)
3228 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
3232 Perl_init_debugger(pTHX)
3234 HV *ostash = PL_curstash;
3236 PL_curstash = PL_debstash;
3237 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3238 AvREAL_off(PL_dbargs);
3239 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3240 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3241 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
3242 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3243 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
3244 sv_setiv(PL_DBsingle, 0);
3245 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
3246 sv_setiv(PL_DBtrace, 0);
3247 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
3248 sv_setiv(PL_DBsignal, 0);
3249 PL_curstash = ostash;
3252 #ifndef STRESS_REALLOC
3253 #define REASONABLE(size) (size)
3255 #define REASONABLE(size) (1) /* unreasonable */
3259 Perl_init_stacks(pTHX)
3261 /* start with 128-item stack and 8K cxstack */
3262 PL_curstackinfo = new_stackinfo(REASONABLE(128),
3263 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3264 PL_curstackinfo->si_type = PERLSI_MAIN;
3265 PL_curstack = PL_curstackinfo->si_stack;
3266 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
3268 PL_stack_base = AvARRAY(PL_curstack);
3269 PL_stack_sp = PL_stack_base;
3270 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
3272 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3275 PL_tmps_max = REASONABLE(128);
3277 New(54,PL_markstack,REASONABLE(32),I32);
3278 PL_markstack_ptr = PL_markstack;
3279 PL_markstack_max = PL_markstack + REASONABLE(32);
3283 New(54,PL_scopestack,REASONABLE(32),I32);
3284 PL_scopestack_ix = 0;
3285 PL_scopestack_max = REASONABLE(32);
3287 New(54,PL_savestack,REASONABLE(128),ANY);
3288 PL_savestack_ix = 0;
3289 PL_savestack_max = REASONABLE(128);
3291 New(54,PL_retstack,REASONABLE(16),OP*);
3293 PL_retstack_max = REASONABLE(16);
3301 while (PL_curstackinfo->si_next)
3302 PL_curstackinfo = PL_curstackinfo->si_next;
3303 while (PL_curstackinfo) {
3304 PERL_SI *p = PL_curstackinfo->si_prev;
3305 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3306 Safefree(PL_curstackinfo->si_cxstack);
3307 Safefree(PL_curstackinfo);
3308 PL_curstackinfo = p;
3310 Safefree(PL_tmps_stack);
3311 Safefree(PL_markstack);
3312 Safefree(PL_scopestack);
3313 Safefree(PL_savestack);
3314 Safefree(PL_retstack);
3323 lex_start(PL_linestr);
3325 PL_subname = newSVpvn("main",4);
3329 S_init_predump_symbols(pTHX)
3334 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3335 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3336 GvMULTI_on(PL_stdingv);
3337 io = GvIOp(PL_stdingv);
3338 IoTYPE(io) = IoTYPE_RDONLY;
3339 IoIFP(io) = PerlIO_stdin();
3340 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
3342 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3344 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
3347 IoTYPE(io) = IoTYPE_WRONLY;
3348 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
3350 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
3352 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3354 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3355 GvMULTI_on(PL_stderrgv);
3356 io = GvIOp(PL_stderrgv);
3357 IoTYPE(io) = IoTYPE_WRONLY;
3358 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
3359 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
3361 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3363 PL_statname = NEWSV(66,0); /* last filename we did stat on */
3366 Safefree(PL_osname);
3367 PL_osname = savepv(OSNAME);
3371 Perl_init_argv_symbols(pTHX_ register int argc, register char **argv)
3374 argc--,argv++; /* skip name of script */
3375 if (PL_doswitches) {
3376 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3379 if (argv[0][1] == '-' && !argv[0][2]) {
3383 if ((s = strchr(argv[0], '='))) {
3385 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
3388 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
3391 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3392 GvMULTI_on(PL_argvgv);
3393 (void)gv_AVadd(PL_argvgv);
3394 av_clear(GvAVn(PL_argvgv));
3395 for (; argc > 0; argc--,argv++) {
3396 SV *sv = newSVpv(argv[0],0);
3397 av_push(GvAVn(PL_argvgv),sv);
3399 (void)sv_utf8_decode(sv);
3404 #ifdef HAS_PROCSELFEXE
3405 /* This is a function so that we don't hold on to MAXPATHLEN
3406 bytes of stack longer than necessary
3409 S_procself_val(pTHX_ SV *sv, char *arg0)
3411 char buf[MAXPATHLEN];
3412 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
3414 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
3415 includes a spurious NUL which will cause $^X to fail in system
3416 or backticks (this will prevent extensions from being built and
3417 many tests from working). readlink is not meant to add a NUL.
3418 Normal readlink works fine.
3420 if (len > 0 && buf[len-1] == '\0') {
3424 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
3425 returning the text "unknown" from the readlink rather than the path
3426 to the executable (or returning an error from the readlink). Any valid
3427 path has a '/' in it somewhere, so use that to validate the result.
3428 See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
3430 if (len > 0 && memchr(buf, '/', len)) {
3431 sv_setpvn(sv,buf,len);
3437 #endif /* HAS_PROCSELFEXE */
3440 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
3446 PL_toptarget = NEWSV(0,0);
3447 sv_upgrade(PL_toptarget, SVt_PVFM);
3448 sv_setpvn(PL_toptarget, "", 0);
3449 PL_bodytarget = NEWSV(0,0);
3450 sv_upgrade(PL_bodytarget, SVt_PVFM);
3451 sv_setpvn(PL_bodytarget, "", 0);
3452 PL_formtarget = PL_bodytarget;
3456 init_argv_symbols(argc,argv);
3458 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
3459 #ifdef MACOS_TRADITIONAL
3460 /* $0 is not majick on a Mac */
3461 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3463 sv_setpv(GvSV(tmpgv),PL_origfilename);
3464 magicname("0", "0", 1);
3467 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV))) {/* $^X */
3468 #ifdef HAS_PROCSELFEXE
3469 S_procself_val(aTHX_ GvSV(tmpgv), PL_origargv[0]);
3472 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
3474 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
3478 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
3480 GvMULTI_on(PL_envgv);
3481 hv = GvHVn(PL_envgv);
3482 hv_magic(hv, Nullgv, PERL_MAGIC_env);
3483 #ifdef USE_ENVIRON_ARRAY
3484 /* Note that if the supplied env parameter is actually a copy
3485 of the global environ then it may now point to free'd memory
3486 if the environment has been modified since. To avoid this
3487 problem we treat env==NULL as meaning 'use the default'
3492 # ifdef USE_ITHREADS
3493 && PL_curinterp == aTHX
3497 environ[0] = Nullch;
3500 for (; *env; env++) {
3501 if (!(s = strchr(*env,'=')))
3508 sv = newSVpv(s+1, 0);
3509 (void)hv_store(hv, *env, s - *env, sv, 0);
3513 #endif /* USE_ENVIRON_ARRAY */
3516 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV))) {
3517 SvREADONLY_off(GvSV(tmpgv));
3518 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
3519 SvREADONLY_on(GvSV(tmpgv));
3521 #ifdef THREADS_HAVE_PIDS
3522 PL_ppid = (IV)getppid();
3525 /* touch @F array to prevent spurious warnings 20020415 MJD */
3527 (void) get_av("main::F", TRUE | GV_ADDMULTI);
3529 /* touch @- and @+ arrays to prevent spurious warnings 20020415 MJD */
3530 (void) get_av("main::-", TRUE | GV_ADDMULTI);
3531 (void) get_av("main::+", TRUE | GV_ADDMULTI);
3535 S_init_perllib(pTHX)
3540 s = PerlEnv_getenv("PERL5LIB");
3542 incpush(s, TRUE, TRUE, TRUE);
3544 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE, TRUE);
3546 /* Treat PERL5?LIB as a possible search list logical name -- the
3547 * "natural" VMS idiom for a Unix path string. We allow each
3548 * element to be a set of |-separated directories for compatibility.
3552 if (my_trnlnm("PERL5LIB",buf,0))
3553 do { incpush(buf,TRUE,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
3555 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE,TRUE);
3559 /* Use the ~-expanded versions of APPLLIB (undocumented),
3560 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
3563 incpush(APPLLIB_EXP, TRUE, TRUE, TRUE);
3567 incpush(ARCHLIB_EXP, FALSE, FALSE, TRUE);
3569 #ifdef MACOS_TRADITIONAL
3572 SV * privdir = NEWSV(55, 0);
3573 char * macperl = PerlEnv_getenv("MACPERL");
3578 Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl);
3579 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3580 incpush(SvPVX(privdir), TRUE, FALSE, TRUE);
3581 Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl);
3582 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3583 incpush(SvPVX(privdir), TRUE, FALSE, TRUE);
3585 SvREFCNT_dec(privdir);
3588 incpush(":", FALSE, FALSE, TRUE);
3591 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
3594 incpush(PRIVLIB_EXP, TRUE, FALSE, TRUE);
3596 incpush(PRIVLIB_EXP, FALSE, FALSE, TRUE);
3600 /* sitearch is always relative to sitelib on Windows for
3601 * DLL-based path intuition to work correctly */
3602 # if !defined(WIN32)
3603 incpush(SITEARCH_EXP, FALSE, FALSE, TRUE);
3609 /* this picks up sitearch as well */
3610 incpush(SITELIB_EXP, TRUE, FALSE, TRUE);
3612 incpush(SITELIB_EXP, FALSE, FALSE, TRUE);
3616 #ifdef SITELIB_STEM /* Search for version-specific dirs below here */
3617 incpush(SITELIB_STEM, FALSE, TRUE, TRUE);
3620 #ifdef PERL_VENDORARCH_EXP
3621 /* vendorarch is always relative to vendorlib on Windows for
3622 * DLL-based path intuition to work correctly */
3623 # if !defined(WIN32)
3624 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE, TRUE);
3628 #ifdef PERL_VENDORLIB_EXP
3630 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE, TRUE); /* this picks up vendorarch as well */
3632 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE, TRUE);
3636 #ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
3637 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE, TRUE);
3640 #ifdef PERL_OTHERLIBDIRS
3641 incpush(PERL_OTHERLIBDIRS, TRUE, TRUE, TRUE);
3645 incpush(".", FALSE, FALSE, TRUE);
3646 #endif /* MACOS_TRADITIONAL */
3649 #if defined(DOSISH) || defined(EPOC)
3650 # define PERLLIB_SEP ';'
3653 # define PERLLIB_SEP '|'
3655 # if defined(MACOS_TRADITIONAL)
3656 # define PERLLIB_SEP ','
3658 # define PERLLIB_SEP ':'
3662 #ifndef PERLLIB_MANGLE
3663 # define PERLLIB_MANGLE(s,n) (s)
3667 S_incpush(pTHX_ char *p, int addsubdirs, int addoldvers, int usesep)
3669 SV *subdir = Nullsv;
3674 if (addsubdirs || addoldvers) {
3675 subdir = sv_newmortal();
3678 /* Break at all separators */
3680 SV *libdir = NEWSV(55,0);
3683 /* skip any consecutive separators */
3685 while ( *p == PERLLIB_SEP ) {
3686 /* Uncomment the next line for PATH semantics */
3687 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
3692 if ( usesep && (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
3693 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
3698 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
3699 p = Nullch; /* break out */
3701 #ifdef MACOS_TRADITIONAL
3702 if (!strchr(SvPVX(libdir), ':')) {
3705 sv_setpv(libdir, MacPerl_CanonDir(SvPVX(libdir), buf, 0));
3707 if (SvPVX(libdir)[SvCUR(libdir)-1] != ':')
3708 sv_catpv(libdir, ":");
3712 * BEFORE pushing libdir onto @INC we may first push version- and
3713 * archname-specific sub-directories.
3715 if (addsubdirs || addoldvers) {
3716 #ifdef PERL_INC_VERSION_LIST
3717 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
3718 const char *incverlist[] = { PERL_INC_VERSION_LIST };
3719 const char **incver;
3726 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
3728 while (unix[len-1] == '/') len--; /* Cosmetic */
3729 sv_usepvn(libdir,unix,len);
3732 PerlIO_printf(Perl_error_log,
3733 "Failed to unixify @INC element \"%s\"\n",
3737 #ifdef MACOS_TRADITIONAL
3738 #define PERL_AV_SUFFIX_FMT ""
3739 #define PERL_ARCH_FMT "%s:"
3740 #define PERL_ARCH_FMT_PATH PERL_FS_VER_FMT PERL_AV_SUFFIX_FMT
3742 #define PERL_AV_SUFFIX_FMT "/"
3743 #define PERL_ARCH_FMT "/%s"
3744 #define PERL_ARCH_FMT_PATH PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT
3746 /* .../version/archname if -d .../version/archname */
3747 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH PERL_ARCH_FMT,
3749 (int)PERL_REVISION, (int)PERL_VERSION,
3750 (int)PERL_SUBVERSION, ARCHNAME);
3751 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3752 S_ISDIR(tmpstatbuf.st_mode))
3753 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3755 /* .../version if -d .../version */
3756 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH, libdir,
3757 (int)PERL_REVISION, (int)PERL_VERSION,
3758 (int)PERL_SUBVERSION);
3759 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3760 S_ISDIR(tmpstatbuf.st_mode))
3761 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3763 /* .../archname if -d .../archname */
3764 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, ARCHNAME);
3765 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3766 S_ISDIR(tmpstatbuf.st_mode))
3767 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3770 #ifdef PERL_INC_VERSION_LIST
3772 for (incver = incverlist; *incver; incver++) {
3773 /* .../xxx if -d .../xxx */
3774 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, *incver);
3775 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3776 S_ISDIR(tmpstatbuf.st_mode))
3777 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3783 /* finally push this lib directory on the end of @INC */
3784 av_push(GvAVn(PL_incgv), libdir);
3788 #ifdef USE_5005THREADS
3789 STATIC struct perl_thread *
3790 S_init_main_thread(pTHX)
3792 #if !defined(PERL_IMPLICIT_CONTEXT)
3793 struct perl_thread *thr;
3797 Newz(53, thr, 1, struct perl_thread);
3798 PL_curcop = &PL_compiling;
3799 thr->interp = PERL_GET_INTERP;
3800 thr->cvcache = newHV();
3801 thr->threadsv = newAV();
3802 /* thr->threadsvp is set when find_threadsv is called */
3803 thr->specific = newAV();
3804 thr->flags = THRf_R_JOINABLE;
3805 MUTEX_INIT(&thr->mutex);
3806 /* Handcraft thrsv similarly to mess_sv */
3807 New(53, PL_thrsv, 1, SV);
3808 Newz(53, xpv, 1, XPV);
3809 SvFLAGS(PL_thrsv) = SVt_PV;
3810 SvANY(PL_thrsv) = (void*)xpv;
3811 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
3812 SvPVX(PL_thrsv) = (char*)thr;
3813 SvCUR_set(PL_thrsv, sizeof(thr));
3814 SvLEN_set(PL_thrsv, sizeof(thr));
3815 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
3816 thr->oursv = PL_thrsv;
3817 PL_chopset = " \n-";
3820 MUTEX_LOCK(&PL_threads_mutex);
3826 MUTEX_UNLOCK(&PL_threads_mutex);
3828 #ifdef HAVE_THREAD_INTERN
3829 Perl_init_thread_intern(thr);
3832 #ifdef SET_THREAD_SELF
3833 SET_THREAD_SELF(thr);
3835 thr->self = pthread_self();
3836 #endif /* SET_THREAD_SELF */
3840 * These must come after the thread self setting
3841 * because sv_setpvn does SvTAINT and the taint
3842 * fields thread selfness being set.
3844 PL_toptarget = NEWSV(0,0);
3845 sv_upgrade(PL_toptarget, SVt_PVFM);
3846 sv_setpvn(PL_toptarget, "", 0);
3847 PL_bodytarget = NEWSV(0,0);
3848 sv_upgrade(PL_bodytarget, SVt_PVFM);
3849 sv_setpvn(PL_bodytarget, "", 0);
3850 PL_formtarget = PL_bodytarget;
3851 thr->errsv = newSVpvn("", 0);
3852 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
3855 PL_peepp = MEMBER_TO_FPTR(Perl_peep);
3856 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3857 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3858 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3859 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3860 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
3862 PL_reginterp_cnt = 0;
3866 #endif /* USE_5005THREADS */
3869 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
3872 line_t oldline = CopLINE(PL_curcop);
3878 while (AvFILL(paramList) >= 0) {
3879 cv = (CV*)av_shift(paramList);
3881 if (paramList == PL_beginav) {
3882 /* save PL_beginav for compiler */
3883 if (! PL_beginav_save)
3884 PL_beginav_save = newAV();
3885 av_push(PL_beginav_save, (SV*)cv);
3887 else if (paramList == PL_checkav) {
3888 /* save PL_checkav for compiler */
3889 if (! PL_checkav_save)
3890 PL_checkav_save = newAV();
3891 av_push(PL_checkav_save, (SV*)cv);
3896 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3897 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_list_body), cv);
3903 #ifndef PERL_FLEXIBLE_EXCEPTIONS
3907 (void)SvPV(atsv, len);
3909 PL_curcop = &PL_compiling;
3910 CopLINE_set(PL_curcop, oldline);
3911 if (paramList == PL_beginav)
3912 sv_catpv(atsv, "BEGIN failed--compilation aborted");
3914 Perl_sv_catpvf(aTHX_ atsv,
3915 "%s failed--call queue aborted",
3916 paramList == PL_checkav ? "CHECK"
3917 : paramList == PL_initav ? "INIT"
3919 while (PL_scopestack_ix > oldscope)
3922 Perl_croak(aTHX_ "%"SVf"", atsv);
3929 /* my_exit() was called */
3930 while (PL_scopestack_ix > oldscope)
3933 PL_curstash = PL_defstash;
3934 PL_curcop = &PL_compiling;
3935 CopLINE_set(PL_curcop, oldline);
3937 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
3938 if (paramList == PL_beginav)
3939 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
3941 Perl_croak(aTHX_ "%s failed--call queue aborted",
3942 paramList == PL_checkav ? "CHECK"
3943 : paramList == PL_initav ? "INIT"
3950 PL_curcop = &PL_compiling;
3951 CopLINE_set(PL_curcop, oldline);
3954 PerlIO_printf(Perl_error_log, "panic: restartop\n");
3962 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3964 S_vcall_list_body(pTHX_ va_list args)
3966 CV *cv = va_arg(args, CV*);
3967 return call_list_body(cv);
3972 S_call_list_body(pTHX_ CV *cv)
3974 PUSHMARK(PL_stack_sp);
3975 call_sv((SV*)cv, G_EVAL|G_DISCARD);
3980 Perl_my_exit(pTHX_ U32 status)
3982 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
3983 thr, (unsigned long) status));
3992 STATUS_NATIVE_SET(status);
3999 Perl_my_failure_exit(pTHX)
4002 if (vaxc$errno & 1) {
4003 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
4004 STATUS_NATIVE_SET(44);
4007 if (!vaxc$errno && errno) /* unlikely */
4008 STATUS_NATIVE_SET(44);
4010 STATUS_NATIVE_SET(vaxc$errno);
4015 STATUS_POSIX_SET(errno);
4017 exitstatus = STATUS_POSIX >> 8;
4018 if (exitstatus & 255)
4019 STATUS_POSIX_SET(exitstatus);
4021 STATUS_POSIX_SET(255);
4028 S_my_exit_jump(pTHX)
4030 register PERL_CONTEXT *cx;
4035 SvREFCNT_dec(PL_e_script);
4036 PL_e_script = Nullsv;
4039 POPSTACK_TO(PL_mainstack);
4040 if (cxstack_ix >= 0) {
4043 POPBLOCK(cx,PL_curpm);
4051 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen)
4054 p = SvPVX(PL_e_script);
4055 nl = strchr(p, '\n');
4056 nl = (nl) ? nl+1 : SvEND(PL_e_script);
4058 filter_del(read_e_script);
4061 sv_catpvn(buf_sv, p, nl-p);
4062 sv_chop(PL_e_script, nl);