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
1028 if ((s = moreswitches(s)))
1033 if( !PL_tainting ) {
1034 PL_taint_warn = TRUE;
1041 PL_taint_warn = FALSE;
1046 #ifdef MACOS_TRADITIONAL
1047 /* ignore -e for Dev:Pseudo argument */
1048 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
1051 if (PL_euid != PL_uid || PL_egid != PL_gid)
1052 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
1054 PL_e_script = newSVpvn("",0);
1055 filter_add(read_e_script, NULL);
1058 sv_catpv(PL_e_script, s);
1060 sv_catpv(PL_e_script, argv[1]);
1064 Perl_croak(aTHX_ "No code specified for -e");
1065 sv_catpv(PL_e_script, "\n");
1068 case 'I': /* -I handled both here and in moreswitches() */
1070 if (!*++s && (s=argv[1]) != Nullch) {
1075 STRLEN len = strlen(s);
1076 p = savepvn(s, len);
1077 incpush(p, TRUE, TRUE, FALSE);
1078 sv_catpvn(sv, "-I", 2);
1079 sv_catpvn(sv, p, len);
1080 sv_catpvn(sv, " ", 1);
1084 Perl_croak(aTHX_ "No directory specified for -I");
1088 PL_preprocess = TRUE;
1098 PL_preambleav = newAV();
1099 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
1101 PL_Sv = newSVpv("print myconfig();",0);
1103 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
1105 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
1107 sv_catpv(PL_Sv,"\" Compile-time options:");
1109 sv_catpv(PL_Sv," DEBUGGING");
1111 # ifdef MULTIPLICITY
1112 sv_catpv(PL_Sv," MULTIPLICITY");
1114 # ifdef USE_5005THREADS
1115 sv_catpv(PL_Sv," USE_5005THREADS");
1117 # ifdef USE_ITHREADS
1118 sv_catpv(PL_Sv," USE_ITHREADS");
1120 # ifdef USE_64_BIT_INT
1121 sv_catpv(PL_Sv," USE_64_BIT_INT");
1123 # ifdef USE_64_BIT_ALL
1124 sv_catpv(PL_Sv," USE_64_BIT_ALL");
1126 # ifdef USE_LONG_DOUBLE
1127 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1129 # ifdef USE_LARGE_FILES
1130 sv_catpv(PL_Sv," USE_LARGE_FILES");
1133 sv_catpv(PL_Sv," USE_SOCKS");
1135 # ifdef PERL_IMPLICIT_CONTEXT
1136 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1138 # ifdef PERL_IMPLICIT_SYS
1139 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1141 sv_catpv(PL_Sv,"\\n\",");
1143 #if defined(LOCAL_PATCH_COUNT)
1144 if (LOCAL_PATCH_COUNT > 0) {
1146 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
1147 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1148 if (PL_localpatches[i])
1149 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
1153 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
1156 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
1158 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
1161 sv_catpv(PL_Sv, "; \
1163 @env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; ");
1166 push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
1169 print \" \\%ENV:\\n @env\\n\" if @env; \
1170 print \" \\@INC:\\n @INC\\n\";");
1173 PL_Sv = newSVpv("config_vars(qw(",0);
1174 sv_catpv(PL_Sv, ++s);
1175 sv_catpv(PL_Sv, "))");
1178 av_push(PL_preambleav, PL_Sv);
1179 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1182 PL_doextract = TRUE;
1190 if (!*++s || isSPACE(*s)) {
1194 /* catch use of gnu style long options */
1195 if (strEQ(s, "version")) {
1199 if (strEQ(s, "help")) {
1206 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1210 sv_setsv(get_sv("/", TRUE), PL_rs);
1213 #ifndef SECURE_INTERNAL_GETENV
1216 (s = PerlEnv_getenv("PERL5OPT")))
1221 if (*s == '-' && *(s+1) == 'T') {
1223 PL_taint_warn = FALSE;
1226 char *popt_copy = Nullch;
1239 if (!strchr("DIMUdmtwA", *s))
1240 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
1244 popt_copy = SvPVX(sv_2mortal(newSVpv(popt,0)));
1245 s = popt_copy + (s - popt);
1246 d = popt_copy + (d - popt);
1253 if( !PL_tainting ) {
1254 PL_taint_warn = TRUE;
1264 if (PL_taint_warn && PL_dowarn != G_WARN_ALL_OFF) {
1265 PL_compiling.cop_warnings = newSVpvn(WARN_TAINTstring, WARNsize);
1269 scriptname = argv[0];
1272 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1274 else if (scriptname == Nullch) {
1276 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1284 open_script(scriptname,dosearch,sv,&fdscript);
1286 validate_suid(validarg, scriptname,fdscript);
1289 #if defined(SIGCHLD) || defined(SIGCLD)
1292 # define SIGCHLD SIGCLD
1294 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1295 if (sigstate == SIG_IGN) {
1296 if (ckWARN(WARN_SIGNAL))
1297 Perl_warner(aTHX_ packWARN(WARN_SIGNAL),
1298 "Can't ignore signal CHLD, forcing to default");
1299 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1305 #ifdef MACOS_TRADITIONAL
1306 if (PL_doextract || gMacPerl_AlwaysExtract) {
1311 if (cddir && PerlDir_chdir(cddir) < 0)
1312 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1316 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1317 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1318 CvUNIQUE_on(PL_compcv);
1320 CvPADLIST(PL_compcv) = pad_new(0);
1321 #ifdef USE_5005THREADS
1322 CvOWNER(PL_compcv) = 0;
1323 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1324 MUTEX_INIT(CvMUTEXP(PL_compcv));
1325 #endif /* USE_5005THREADS */
1328 boot_core_UNIVERSAL();
1330 boot_core_xsutils();
1334 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
1336 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
1342 # ifdef HAS_SOCKS5_INIT
1343 socks5_init(argv[0]);
1349 init_predump_symbols();
1350 /* init_postdump_symbols not currently designed to be called */
1351 /* more than once (ENV isn't cleared first, for example) */
1352 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
1354 init_postdump_symbols(argc,argv,env);
1356 /* PL_unicode is turned on by -C or by $ENV{PERL_UNICODE}.
1357 * PL_utf8locale is conditionally turned on by
1358 * locale.c:Perl_init_i18nl10n() if the environment
1359 * look like the user wants to use UTF-8. */
1360 if (PL_unicode) { /* Requires init_predump_symbols(). */
1365 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
1366 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
1367 * and the default open discipline. */
1368 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
1369 PL_stdingv && (io = GvIO(PL_stdingv)) &&
1371 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
1372 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
1373 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
1375 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
1376 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
1377 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
1379 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
1380 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
1381 (sv = GvSV(gv_fetchpv("\017PEN", TRUE, SVt_PV)))) {
1382 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
1383 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
1386 sv_setpvn(sv, ":utf8\0:utf8", 11);
1388 sv_setpvn(sv, ":utf8\0", 6);
1391 sv_setpvn(sv, "\0:utf8", 6);
1399 /* now parse the script */
1401 SETERRNO(0,SS_NORMAL);
1403 #ifdef MACOS_TRADITIONAL
1404 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1406 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1408 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1409 MacPerl_MPWFileName(PL_origfilename));
1413 if (yyparse() || PL_error_count) {
1415 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
1417 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1422 CopLINE_set(PL_curcop, 0);
1423 PL_curstash = PL_defstash;
1424 PL_preprocess = FALSE;
1426 SvREFCNT_dec(PL_e_script);
1427 PL_e_script = Nullsv;
1434 SAVECOPFILE(PL_curcop);
1435 SAVECOPLINE(PL_curcop);
1436 gv_check(PL_defstash);
1443 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1444 dump_mstats("after compilation:");
1453 =for apidoc perl_run
1455 Tells a Perl interpreter to run. See L<perlembed>.
1466 #ifdef USE_5005THREADS
1470 oldscope = PL_scopestack_ix;
1475 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1477 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1483 cxstack_ix = -1; /* start context stack again */
1485 case 0: /* normal completion */
1486 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1491 case 2: /* my_exit() */
1492 while (PL_scopestack_ix > oldscope)
1495 PL_curstash = PL_defstash;
1496 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
1497 PL_endav && !PL_minus_c)
1498 call_list(oldscope, PL_endav);
1500 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1501 dump_mstats("after execution: ");
1503 ret = STATUS_NATIVE_EXPORT;
1507 POPSTACK_TO(PL_mainstack);
1510 PerlIO_printf(Perl_error_log, "panic: restartop\n");
1520 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1522 S_vrun_body(pTHX_ va_list args)
1524 I32 oldscope = va_arg(args, I32);
1526 return run_body(oldscope);
1532 S_run_body(pTHX_ I32 oldscope)
1534 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
1535 PL_sawampersand ? "Enabling" : "Omitting"));
1537 if (!PL_restartop) {
1538 DEBUG_x(dump_all());
1539 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
1540 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1544 #ifdef MACOS_TRADITIONAL
1545 PerlIO_printf(Perl_error_log, "%s%s syntax OK\n",
1546 (gMacPerl_ErrorFormat ? "# " : ""),
1547 MacPerl_MPWFileName(PL_origfilename));
1549 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
1553 if (PERLDB_SINGLE && PL_DBsingle)
1554 sv_setiv(PL_DBsingle, 1);
1556 call_list(oldscope, PL_initav);
1562 PL_op = PL_restartop;
1566 else if (PL_main_start) {
1567 CvDEPTH(PL_main_cv) = 1;
1568 PL_op = PL_main_start;
1578 =head1 SV Manipulation Functions
1580 =for apidoc p||get_sv
1582 Returns the SV of the specified Perl scalar. If C<create> is set and the
1583 Perl variable does not exist then it will be created. If C<create> is not
1584 set and the variable does not exist then NULL is returned.
1590 Perl_get_sv(pTHX_ const char *name, I32 create)
1593 #ifdef USE_5005THREADS
1594 if (name[1] == '\0' && !isALPHA(name[0])) {
1595 PADOFFSET tmp = find_threadsv(name);
1596 if (tmp != NOT_IN_PAD)
1597 return THREADSV(tmp);
1599 #endif /* USE_5005THREADS */
1600 gv = gv_fetchpv(name, create, SVt_PV);
1607 =head1 Array Manipulation Functions
1609 =for apidoc p||get_av
1611 Returns the AV of the specified Perl array. If C<create> is set and the
1612 Perl variable does not exist then it will be created. If C<create> is not
1613 set and the variable does not exist then NULL is returned.
1619 Perl_get_av(pTHX_ const char *name, I32 create)
1621 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1630 =head1 Hash Manipulation Functions
1632 =for apidoc p||get_hv
1634 Returns the HV of the specified Perl hash. If C<create> is set and the
1635 Perl variable does not exist then it will be created. If C<create> is not
1636 set and the variable does not exist then NULL is returned.
1642 Perl_get_hv(pTHX_ const char *name, I32 create)
1644 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1653 =head1 CV Manipulation Functions
1655 =for apidoc p||get_cv
1657 Returns the CV of the specified Perl subroutine. If C<create> is set and
1658 the Perl subroutine does not exist then it will be declared (which has the
1659 same effect as saying C<sub name;>). If C<create> is not set and the
1660 subroutine does not exist then NULL is returned.
1666 Perl_get_cv(pTHX_ const char *name, I32 create)
1668 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
1669 /* XXX unsafe for threads if eval_owner isn't held */
1670 /* XXX this is probably not what they think they're getting.
1671 * It has the same effect as "sub name;", i.e. just a forward
1673 if (create && !GvCVu(gv))
1674 return newSUB(start_subparse(FALSE, 0),
1675 newSVOP(OP_CONST, 0, newSVpv(name,0)),
1683 /* Be sure to refetch the stack pointer after calling these routines. */
1687 =head1 Callback Functions
1689 =for apidoc p||call_argv
1691 Performs a callback to the specified Perl sub. See L<perlcall>.
1697 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
1699 /* See G_* flags in cop.h */
1700 /* null terminated arg list */
1707 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
1712 return call_pv(sub_name, flags);
1716 =for apidoc p||call_pv
1718 Performs a callback to the specified Perl sub. See L<perlcall>.
1724 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
1725 /* name of the subroutine */
1726 /* See G_* flags in cop.h */
1728 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
1732 =for apidoc p||call_method
1734 Performs a callback to the specified Perl method. The blessed object must
1735 be on the stack. See L<perlcall>.
1741 Perl_call_method(pTHX_ const char *methname, I32 flags)
1742 /* name of the subroutine */
1743 /* See G_* flags in cop.h */
1745 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
1748 /* May be called with any of a CV, a GV, or an SV containing the name. */
1750 =for apidoc p||call_sv
1752 Performs a callback to the Perl sub whose name is in the SV. See
1759 Perl_call_sv(pTHX_ SV *sv, I32 flags)
1760 /* See G_* flags in cop.h */
1763 LOGOP myop; /* fake syntax tree node */
1766 volatile I32 retval = 0;
1768 bool oldcatch = CATCH_GET;
1773 if (flags & G_DISCARD) {
1778 Zero(&myop, 1, LOGOP);
1779 myop.op_next = Nullop;
1780 if (!(flags & G_NOARGS))
1781 myop.op_flags |= OPf_STACKED;
1782 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1783 (flags & G_ARRAY) ? OPf_WANT_LIST :
1788 EXTEND(PL_stack_sp, 1);
1789 *++PL_stack_sp = sv;
1791 oldscope = PL_scopestack_ix;
1793 if (PERLDB_SUB && PL_curstash != PL_debstash
1794 /* Handle first BEGIN of -d. */
1795 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
1796 /* Try harder, since this may have been a sighandler, thus
1797 * curstash may be meaningless. */
1798 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
1799 && !(flags & G_NODEBUG))
1800 PL_op->op_private |= OPpENTERSUB_DB;
1802 if (flags & G_METHOD) {
1803 Zero(&method_op, 1, UNOP);
1804 method_op.op_next = PL_op;
1805 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1806 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
1807 PL_op = (OP*)&method_op;
1810 if (!(flags & G_EVAL)) {
1812 call_body((OP*)&myop, FALSE);
1813 retval = PL_stack_sp - (PL_stack_base + oldmark);
1814 CATCH_SET(oldcatch);
1817 myop.op_other = (OP*)&myop;
1819 /* we're trying to emulate pp_entertry() here */
1821 register PERL_CONTEXT *cx;
1822 I32 gimme = GIMME_V;
1827 push_return(Nullop);
1828 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
1830 PL_eval_root = PL_op; /* Only needed so that goto works right. */
1832 PL_in_eval = EVAL_INEVAL;
1833 if (flags & G_KEEPERR)
1834 PL_in_eval |= EVAL_KEEPERR;
1840 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1842 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1849 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1851 call_body((OP*)&myop, FALSE);
1853 retval = PL_stack_sp - (PL_stack_base + oldmark);
1854 if (!(flags & G_KEEPERR))
1861 /* my_exit() was called */
1862 PL_curstash = PL_defstash;
1865 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1866 Perl_croak(aTHX_ "Callback called exit");
1871 PL_op = PL_restartop;
1875 PL_stack_sp = PL_stack_base + oldmark;
1876 if (flags & G_ARRAY)
1880 *++PL_stack_sp = &PL_sv_undef;
1885 if (PL_scopestack_ix > oldscope) {
1889 register PERL_CONTEXT *cx;
1901 if (flags & G_DISCARD) {
1902 PL_stack_sp = PL_stack_base + oldmark;
1911 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1913 S_vcall_body(pTHX_ va_list args)
1915 OP *myop = va_arg(args, OP*);
1916 int is_eval = va_arg(args, int);
1918 call_body(myop, is_eval);
1924 S_call_body(pTHX_ OP *myop, int is_eval)
1926 if (PL_op == myop) {
1928 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
1930 PL_op = Perl_pp_entersub(aTHX); /* this does */
1936 /* Eval a string. The G_EVAL flag is always assumed. */
1939 =for apidoc p||eval_sv
1941 Tells Perl to C<eval> the string in the SV.
1947 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
1949 /* See G_* flags in cop.h */
1952 UNOP myop; /* fake syntax tree node */
1953 volatile I32 oldmark = SP - PL_stack_base;
1954 volatile I32 retval = 0;
1960 if (flags & G_DISCARD) {
1967 Zero(PL_op, 1, UNOP);
1968 EXTEND(PL_stack_sp, 1);
1969 *++PL_stack_sp = sv;
1970 oldscope = PL_scopestack_ix;
1972 if (!(flags & G_NOARGS))
1973 myop.op_flags = OPf_STACKED;
1974 myop.op_next = Nullop;
1975 myop.op_type = OP_ENTEREVAL;
1976 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1977 (flags & G_ARRAY) ? OPf_WANT_LIST :
1979 if (flags & G_KEEPERR)
1980 myop.op_flags |= OPf_SPECIAL;
1982 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1984 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1991 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1993 call_body((OP*)&myop,TRUE);
1995 retval = PL_stack_sp - (PL_stack_base + oldmark);
1996 if (!(flags & G_KEEPERR))
2003 /* my_exit() was called */
2004 PL_curstash = PL_defstash;
2007 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
2008 Perl_croak(aTHX_ "Callback called exit");
2013 PL_op = PL_restartop;
2017 PL_stack_sp = PL_stack_base + oldmark;
2018 if (flags & G_ARRAY)
2022 *++PL_stack_sp = &PL_sv_undef;
2028 if (flags & G_DISCARD) {
2029 PL_stack_sp = PL_stack_base + oldmark;
2039 =for apidoc p||eval_pv
2041 Tells Perl to C<eval> the given string and return an SV* result.
2047 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
2050 SV* sv = newSVpv(p, 0);
2052 eval_sv(sv, G_SCALAR);
2059 if (croak_on_error && SvTRUE(ERRSV)) {
2061 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
2067 /* Require a module. */
2070 =head1 Embedding Functions
2072 =for apidoc p||require_pv
2074 Tells Perl to C<require> the file named by the string argument. It is
2075 analogous to the Perl code C<eval "require '$file'">. It's even
2076 implemented that way; consider using Perl_load_module instead.
2081 Perl_require_pv(pTHX_ const char *pv)
2085 PUSHSTACKi(PERLSI_REQUIRE);
2087 sv = sv_newmortal();
2088 sv_setpv(sv, "require '");
2091 eval_sv(sv, G_DISCARD);
2097 Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
2101 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
2102 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
2106 S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
2108 /* This message really ought to be max 23 lines.
2109 * Removed -h because the user already knows that option. Others? */
2111 static char *usage_msg[] = {
2112 "-0[octal] specify record separator (\\0, if no argument)",
2113 "-a autosplit mode with -n or -p (splits $_ into @F)",
2114 "-C enable native wide character system interfaces",
2115 "-c check syntax only (runs BEGIN and CHECK blocks)",
2116 "-d[:debugger] run program under debugger",
2117 "-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2118 "-e 'command' one line of program (several -e's allowed, omit programfile)",
2119 "-F/pattern/ split() pattern for -a switch (//'s are optional)",
2120 "-i[extension] edit <> files in place (makes backup if extension supplied)",
2121 "-Idirectory specify @INC/#include directory (several -I's allowed)",
2122 "-l[octal] enable line ending processing, specifies line terminator",
2123 "-[mM][-]module execute `use/no module...' before executing program",
2124 "-n assume 'while (<>) { ... }' loop around program",
2125 "-p assume loop like -n but print line also, like sed",
2126 "-P run program through C preprocessor before compilation",
2127 "-s enable rudimentary parsing for switches after programfile",
2128 "-S look for programfile using PATH environment variable",
2129 "-T enable tainting checks",
2130 "-t enable tainting warnings",
2131 "-u dump core after parsing program",
2132 "-U allow unsafe operations",
2133 "-v print version, subversion (includes VERY IMPORTANT perl info)",
2134 "-V[:variable] print configuration summary (or a single Config.pm variable)",
2135 "-w enable many useful warnings (RECOMMENDED)",
2136 "-W enable all warnings",
2137 "-X disable all warnings",
2138 "-x[directory] strip off text before #!perl line and perhaps cd to directory",
2142 char **p = usage_msg;
2144 PerlIO_printf(PerlIO_stdout(),
2145 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2148 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
2151 /* This routine handles any switches that can be given during run */
2154 Perl_moreswitches(pTHX_ char *s)
2164 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
2165 SvREFCNT_dec(PL_rs);
2166 if (rschar & ~((U8)~0))
2167 PL_rs = &PL_sv_undef;
2168 else if (!rschar && numlen >= 2)
2169 PL_rs = newSVpvn("", 0);
2171 char ch = (char)rschar;
2172 PL_rs = newSVpvn(&ch, 1);
2178 PL_unicode = parse_unicode_opts(&s);
2183 while (*s && !isSPACE(*s)) ++s;
2185 PL_splitstr = savepv(PL_splitstr);
2198 /* The following permits -d:Mod to accepts arguments following an =
2199 in the fashion that -MSome::Mod does. */
2200 if (*s == ':' || *s == '=') {
2203 sv = newSVpv("use Devel::", 0);
2205 /* We now allow -d:Module=Foo,Bar */
2206 while(isALNUM(*s) || *s==':') ++s;
2208 sv_catpv(sv, start);
2210 sv_catpvn(sv, start, s-start);
2211 sv_catpv(sv, " split(/,/,q{");
2216 my_setenv("PERL5DB", SvPV(sv, PL_na));
2219 PL_perldb = PERLDB_ALL;
2227 if (isALPHA(s[1])) {
2228 /* if adding extra options, remember to update DEBUG_MASK */
2229 static char debopts[] = "psltocPmfrxu HXDSTRJvC";
2232 for (s++; *s && (d = strchr(debopts,*s)); s++)
2233 PL_debug |= 1 << (d - debopts);
2236 PL_debug = atoi(s+1);
2237 for (s++; isDIGIT(*s); s++) ;
2240 if (DEBUG_p_TEST_ && ckWARN_d(WARN_DEBUGGING))
2241 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2242 "-Dp not implemented on this platform\n");
2244 PL_debug |= DEBUG_TOP_FLAG;
2245 #else /* !DEBUGGING */
2246 if (ckWARN_d(WARN_DEBUGGING))
2247 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2248 "Recompile perl with -DDEBUGGING to use -D switch\n");
2249 for (s++; isALNUM(*s); s++) ;
2255 usage(PL_origargv[0]);
2259 Safefree(PL_inplace);
2260 #if defined(__CYGWIN__) /* do backup extension automagically */
2261 if (*(s+1) == '\0') {
2262 PL_inplace = savepv(".bak");
2265 #endif /* __CYGWIN__ */
2266 PL_inplace = savepv(s+1);
2268 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
2271 if (*s == '-') /* Additional switches on #! line. */
2275 case 'I': /* -I handled both here and in parse_body() */
2278 while (*s && isSPACE(*s))
2283 /* ignore trailing spaces (possibly followed by other switches) */
2285 for (e = p; *e && !isSPACE(*e); e++) ;
2289 } while (*p && *p != '-');
2290 e = savepvn(s, e-s);
2291 incpush(e, TRUE, TRUE, FALSE);
2298 Perl_croak(aTHX_ "No directory specified for -I");
2304 SvREFCNT_dec(PL_ors_sv);
2309 PL_ors_sv = newSVpvn("\n",1);
2310 numlen = 3 + (*s == '0');
2311 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
2315 if (RsPARA(PL_rs)) {
2316 PL_ors_sv = newSVpvn("\n\n",2);
2319 PL_ors_sv = newSVsv(PL_rs);
2326 SV *sv=newSVpv("use assertions::activate split(/,/,q{",0);
2331 PL_preambleav = newAV();
2332 av_push(PL_preambleav, sv);
2335 Perl_croak(aTHX_ "No space allowed after -A");
2338 forbid_setid("-M"); /* XXX ? */
2341 forbid_setid("-m"); /* XXX ? */
2346 /* -M-foo == 'no foo' */
2347 if (*s == '-') { use = "no "; ++s; }
2348 sv = newSVpv(use,0);
2350 /* We allow -M'Module qw(Foo Bar)' */
2351 while(isALNUM(*s) || *s==':') ++s;
2353 sv_catpv(sv, start);
2354 if (*(start-1) == 'm') {
2356 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
2357 sv_catpv( sv, " ()");
2361 Perl_croak(aTHX_ "Module name required with -%c option",
2363 sv_catpvn(sv, start, s-start);
2364 sv_catpv(sv, " split(/,/,q{");
2370 PL_preambleav = newAV();
2371 av_push(PL_preambleav, sv);
2374 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
2386 PL_doswitches = TRUE;
2391 Perl_croak(aTHX_ "Too late for \"-t\" option");
2396 Perl_croak(aTHX_ "Too late for \"-T\" option");
2400 #ifdef MACOS_TRADITIONAL
2401 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2403 PL_do_undump = TRUE;
2412 PerlIO_printf(PerlIO_stdout(),
2413 Perl_form(aTHX_ "\nThis is perl, v%"VDf" built for %s",
2414 PL_patchlevel, ARCHNAME));
2416 /* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
2417 PerlIO_printf(PerlIO_stdout(),
2418 Perl_form(aTHX_ "\nThis is perl, version %vd\n", PL_patchlevel));
2419 PerlIO_printf(PerlIO_stdout(),
2420 Perl_form(aTHX_ " built under %s at %s %s\n",
2421 OSNAME, __DATE__, __TIME__));
2422 PerlIO_printf(PerlIO_stdout(),
2423 Perl_form(aTHX_ " OS Specific Release: %s\n",
2427 #if defined(LOCAL_PATCH_COUNT)
2428 if (LOCAL_PATCH_COUNT > 0)
2429 PerlIO_printf(PerlIO_stdout(),
2430 "\n(with %d registered patch%s, "
2431 "see perl -V for more detail)",
2432 (int)LOCAL_PATCH_COUNT,
2433 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
2436 PerlIO_printf(PerlIO_stdout(),
2437 "\n\nCopyright 1987-2002, Larry Wall\n");
2438 #ifdef MACOS_TRADITIONAL
2439 PerlIO_printf(PerlIO_stdout(),
2440 "\nMac OS port Copyright 1991-2002, Matthias Neeracher;\n"
2441 "maintained by Chris Nandor\n");
2444 PerlIO_printf(PerlIO_stdout(),
2445 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
2448 PerlIO_printf(PerlIO_stdout(),
2449 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2450 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
2453 PerlIO_printf(PerlIO_stdout(),
2454 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2455 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
2458 PerlIO_printf(PerlIO_stdout(),
2459 "atariST series port, ++jrb bammi@cadence.com\n");
2462 PerlIO_printf(PerlIO_stdout(),
2463 "BeOS port Copyright Tom Spindler, 1997-1999\n");
2466 PerlIO_printf(PerlIO_stdout(),
2467 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2002\n");
2470 PerlIO_printf(PerlIO_stdout(),
2471 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
2474 PerlIO_printf(PerlIO_stdout(),
2475 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
2478 PerlIO_printf(PerlIO_stdout(),
2479 "VM/ESA port by Neale Ferguson, 1998-1999\n");
2482 PerlIO_printf(PerlIO_stdout(),
2483 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
2486 PerlIO_printf(PerlIO_stdout(),
2487 "MiNT port by Guido Flohr, 1997-1999\n");
2490 PerlIO_printf(PerlIO_stdout(),
2491 "EPOC port by Olaf Flebbe, 1999-2002\n");
2494 printf("WINCE port by Rainer Keuchel, 2001-2002\n");
2495 printf("Built on " __DATE__ " " __TIME__ "\n\n");
2498 #ifdef BINARY_BUILD_NOTICE
2499 BINARY_BUILD_NOTICE;
2501 PerlIO_printf(PerlIO_stdout(),
2503 Perl may be copied only under the terms of either the Artistic License or the\n\
2504 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
2505 Complete documentation for Perl, including FAQ lists, should be found on\n\
2506 this system using `man perl' or `perldoc perl'. If you have access to the\n\
2507 Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
2510 if (! (PL_dowarn & G_WARN_ALL_MASK))
2511 PL_dowarn |= G_WARN_ON;
2515 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
2516 if (!specialWARN(PL_compiling.cop_warnings))
2517 SvREFCNT_dec(PL_compiling.cop_warnings);
2518 PL_compiling.cop_warnings = pWARN_ALL ;
2522 PL_dowarn = G_WARN_ALL_OFF;
2523 if (!specialWARN(PL_compiling.cop_warnings))
2524 SvREFCNT_dec(PL_compiling.cop_warnings);
2525 PL_compiling.cop_warnings = pWARN_NONE ;
2530 if (s[1] == '-') /* Additional switches on #! line. */
2535 #if defined(WIN32) || !defined(PERL_STRICT_CR)
2541 #ifdef ALTERNATE_SHEBANG
2542 case 'S': /* OS/2 needs -S on "extproc" line. */
2550 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
2555 /* compliments of Tom Christiansen */
2557 /* unexec() can be found in the Gnu emacs distribution */
2558 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
2561 Perl_my_unexec(pTHX)
2569 prog = newSVpv(BIN_EXP, 0);
2570 sv_catpv(prog, "/perl");
2571 file = newSVpv(PL_origfilename, 0);
2572 sv_catpv(file, ".perldump");
2574 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2575 /* unexec prints msg to stderr in case of failure */
2576 PerlProc_exit(status);
2579 # include <lib$routines.h>
2580 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
2582 ABORT(); /* for use with undump */
2587 /* initialize curinterp */
2593 # define PERLVAR(var,type)
2594 # define PERLVARA(var,n,type)
2595 # if defined(PERL_IMPLICIT_CONTEXT)
2596 # if defined(USE_5005THREADS)
2597 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2598 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2599 # else /* !USE_5005THREADS */
2600 # define PERLVARI(var,type,init) aTHX->var = init;
2601 # define PERLVARIC(var,type,init) aTHX->var = init;
2602 # endif /* USE_5005THREADS */
2604 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2605 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2607 # include "intrpvar.h"
2608 # ifndef USE_5005THREADS
2609 # include "thrdvar.h"
2616 # define PERLVAR(var,type)
2617 # define PERLVARA(var,n,type)
2618 # define PERLVARI(var,type,init) PL_##var = init;
2619 # define PERLVARIC(var,type,init) PL_##var = init;
2620 # include "intrpvar.h"
2621 # ifndef USE_5005THREADS
2622 # include "thrdvar.h"
2633 S_init_main_stash(pTHX)
2637 PL_curstash = PL_defstash = newHV();
2638 PL_curstname = newSVpvn("main",4);
2639 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2640 SvREFCNT_dec(GvHV(gv));
2641 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
2643 HvNAME(PL_defstash) = savepv("main");
2644 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2645 GvMULTI_on(PL_incgv);
2646 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2647 GvMULTI_on(PL_hintgv);
2648 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2649 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2650 GvMULTI_on(PL_errgv);
2651 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2652 GvMULTI_on(PL_replgv);
2653 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
2654 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2655 sv_setpvn(ERRSV, "", 0);
2656 PL_curstash = PL_defstash;
2657 CopSTASH_set(&PL_compiling, PL_defstash);
2658 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
2659 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
2660 /* We must init $/ before switches are processed. */
2661 sv_setpvn(get_sv("/", TRUE), "\n", 1);
2665 S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
2669 char *cpp_discard_flag;
2675 PL_origfilename = savepv("-e");
2678 /* if find_script() returns, it returns a malloc()-ed value */
2679 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
2681 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2682 char *s = scriptname + 8;
2683 *fdscript = atoi(s);
2687 scriptname = savepv(s + 1);
2688 Safefree(PL_origfilename);
2689 PL_origfilename = scriptname;
2694 CopFILE_free(PL_curcop);
2695 CopFILE_set(PL_curcop, PL_origfilename);
2696 if (strEQ(PL_origfilename,"-"))
2698 if (*fdscript >= 0) {
2699 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
2700 # if defined(HAS_FCNTL) && defined(F_SETFD)
2702 /* ensure close-on-exec */
2703 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1);
2706 else if (PL_preprocess) {
2707 char *cpp_cfg = CPPSTDIN;
2708 SV *cpp = newSVpvn("",0);
2709 SV *cmd = NEWSV(0,0);
2711 if (strEQ(cpp_cfg, "cppstdin"))
2712 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
2713 sv_catpv(cpp, cpp_cfg);
2716 sv_catpvn(sv, "-I", 2);
2717 sv_catpv(sv,PRIVLIB_EXP);
2720 DEBUG_P(PerlIO_printf(Perl_debug_log,
2721 "PL_preprocess: scriptname=\"%s\", cpp=\"%s\", sv=\"%s\", CPPMINUS=\"%s\"\n",
2722 scriptname, SvPVX (cpp), SvPVX (sv), CPPMINUS));
2724 # if defined(MSDOS) || defined(WIN32) || defined(VMS)
2731 cpp_discard_flag = "";
2733 cpp_discard_flag = "-C";
2737 perl = os2_execname(aTHX);
2739 perl = PL_origargv[0];
2743 /* This strips off Perl comments which might interfere with
2744 the C pre-processor, including #!. #line directives are
2745 deliberately stripped to avoid confusion with Perl's version
2746 of #line. FWP played some golf with it so it will fit
2747 into VMS's 255 character buffer.
2750 code = "(1../^#!.*perl/i)|/^\\s*#(?!\\s*((ifn?|un)def|(el|end)?if|define|include|else|error|pragma)\\b)/||!($|=1)||print";
2752 code = "/^\\s*#(?!\\s*((ifn?|un)def|(el|end)?if|define|include|else|error|pragma)\\b)/||!($|=1)||print";
2754 Perl_sv_setpvf(aTHX_ cmd, "\
2755 %s -ne%s%s%s %s | %"SVf" %s %"SVf" %s",
2756 perl, quote, code, quote, scriptname, cpp,
2757 cpp_discard_flag, sv, CPPMINUS);
2759 PL_doextract = FALSE;
2760 # ifdef IAMSUID /* actually, this is caught earlier */
2761 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
2763 (void)seteuid(PL_uid); /* musn't stay setuid root */
2765 # ifdef HAS_SETREUID
2766 (void)setreuid((Uid_t)-1, PL_uid);
2768 # ifdef HAS_SETRESUID
2769 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
2771 PerlProc_setuid(PL_uid);
2775 if (PerlProc_geteuid() != PL_uid)
2776 Perl_croak(aTHX_ "Can't do seteuid!\n");
2778 # endif /* IAMSUID */
2780 DEBUG_P(PerlIO_printf(Perl_debug_log,
2781 "PL_preprocess: cmd=\"%s\"\n",
2784 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
2788 else if (!*scriptname) {
2789 forbid_setid("program input from stdin");
2790 PL_rsfp = PerlIO_stdin();
2793 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
2794 # if defined(HAS_FCNTL) && defined(F_SETFD)
2796 /* ensure close-on-exec */
2797 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1);
2802 # ifndef IAMSUID /* in case script is not readable before setuid */
2804 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
2805 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2808 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT,
2809 BIN_EXP, (int)PERL_REVISION,
2811 (int)PERL_SUBVERSION), PL_origargv);
2812 Perl_croak(aTHX_ "Can't do setuid\n");
2818 Perl_croak(aTHX_ "Can't open perl script: %s\n",
2821 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
2822 CopFILE(PL_curcop), Strerror(errno));
2828 * I_SYSSTATVFS HAS_FSTATVFS
2830 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
2831 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2832 * here so that metaconfig picks them up. */
2836 S_fd_on_nosuid_fs(pTHX_ int fd)
2838 int check_okay = 0; /* able to do all the required sys/libcalls */
2839 int on_nosuid = 0; /* the fd is on a nosuid fs */
2841 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
2842 * fstatvfs() is UNIX98.
2843 * fstatfs() is 4.3 BSD.
2844 * ustat()+getmnt() is pre-4.3 BSD.
2845 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2846 * an irrelevant filesystem while trying to reach the right one.
2849 #undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2851 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2852 defined(HAS_FSTATVFS)
2853 # define FD_ON_NOSUID_CHECK_OKAY
2854 struct statvfs stfs;
2856 check_okay = fstatvfs(fd, &stfs) == 0;
2857 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
2858 # endif /* fstatvfs */
2860 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2861 defined(PERL_MOUNT_NOSUID) && \
2862 defined(HAS_FSTATFS) && \
2863 defined(HAS_STRUCT_STATFS) && \
2864 defined(HAS_STRUCT_STATFS_F_FLAGS)
2865 # define FD_ON_NOSUID_CHECK_OKAY
2868 check_okay = fstatfs(fd, &stfs) == 0;
2869 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
2870 # endif /* fstatfs */
2872 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2873 defined(PERL_MOUNT_NOSUID) && \
2874 defined(HAS_FSTAT) && \
2875 defined(HAS_USTAT) && \
2876 defined(HAS_GETMNT) && \
2877 defined(HAS_STRUCT_FS_DATA) && \
2879 # define FD_ON_NOSUID_CHECK_OKAY
2882 if (fstat(fd, &fdst) == 0) {
2884 if (ustat(fdst.st_dev, &us) == 0) {
2886 /* NOSTAT_ONE here because we're not examining fields which
2887 * vary between that case and STAT_ONE. */
2888 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
2889 size_t cmplen = sizeof(us.f_fname);
2890 if (sizeof(fsd.fd_req.path) < cmplen)
2891 cmplen = sizeof(fsd.fd_req.path);
2892 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2893 fdst.st_dev == fsd.fd_req.dev) {
2895 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2901 # endif /* fstat+ustat+getmnt */
2903 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2904 defined(HAS_GETMNTENT) && \
2905 defined(HAS_HASMNTOPT) && \
2906 defined(MNTOPT_NOSUID)
2907 # define FD_ON_NOSUID_CHECK_OKAY
2908 FILE *mtab = fopen("/etc/mtab", "r");
2909 struct mntent *entry;
2912 if (mtab && (fstat(fd, &stb) == 0)) {
2913 while (entry = getmntent(mtab)) {
2914 if (stat(entry->mnt_dir, &fsb) == 0
2915 && fsb.st_dev == stb.st_dev)
2917 /* found the filesystem */
2919 if (hasmntopt(entry, MNTOPT_NOSUID))
2922 } /* A single fs may well fail its stat(). */
2927 # endif /* getmntent+hasmntopt */
2930 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
2933 #endif /* IAMSUID */
2936 S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
2942 /* do we need to emulate setuid on scripts? */
2944 /* This code is for those BSD systems that have setuid #! scripts disabled
2945 * in the kernel because of a security problem. Merely defining DOSUID
2946 * in perl will not fix that problem, but if you have disabled setuid
2947 * scripts in the kernel, this will attempt to emulate setuid and setgid
2948 * on scripts that have those now-otherwise-useless bits set. The setuid
2949 * root version must be called suidperl or sperlN.NNN. If regular perl
2950 * discovers that it has opened a setuid script, it calls suidperl with
2951 * the same argv that it had. If suidperl finds that the script it has
2952 * just opened is NOT setuid root, it sets the effective uid back to the
2953 * uid. We don't just make perl setuid root because that loses the
2954 * effective uid we had before invoking perl, if it was different from the
2957 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2958 * be defined in suidperl only. suidperl must be setuid root. The
2959 * Configure script will set this up for you if you want it.
2965 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
2966 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
2967 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
2972 #ifndef HAS_SETREUID
2973 /* On this access check to make sure the directories are readable,
2974 * there is actually a small window that the user could use to make
2975 * filename point to an accessible directory. So there is a faint
2976 * chance that someone could execute a setuid script down in a
2977 * non-accessible directory. I don't know what to do about that.
2978 * But I don't think it's too important. The manual lies when
2979 * it says access() is useful in setuid programs.
2981 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
2982 Perl_croak(aTHX_ "Permission denied");
2984 /* If we can swap euid and uid, then we can determine access rights
2985 * with a simple stat of the file, and then compare device and
2986 * inode to make sure we did stat() on the same file we opened.
2987 * Then we just have to make sure he or she can execute it.
2994 setreuid(PL_euid,PL_uid) < 0
2997 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
3000 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
3001 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
3002 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
3003 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
3004 #if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
3005 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
3006 Perl_croak(aTHX_ "Permission denied");
3008 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
3009 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
3010 (void)PerlIO_close(PL_rsfp);
3011 Perl_croak(aTHX_ "Permission denied\n");
3015 setreuid(PL_uid,PL_euid) < 0
3017 # if defined(HAS_SETRESUID)
3018 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
3021 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
3022 Perl_croak(aTHX_ "Can't reswap uid and euid");
3023 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
3024 Perl_croak(aTHX_ "Permission denied\n");
3026 #endif /* HAS_SETREUID */
3027 #endif /* IAMSUID */
3029 if (!S_ISREG(PL_statbuf.st_mode))
3030 Perl_croak(aTHX_ "Permission denied");
3031 if (PL_statbuf.st_mode & S_IWOTH)
3032 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
3033 PL_doswitches = FALSE; /* -s is insecure in suid */
3034 CopLINE_inc(PL_curcop);
3035 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
3036 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
3037 Perl_croak(aTHX_ "No #! line");
3038 s = SvPV(PL_linestr,n_a)+2;
3040 while (!isSPACE(*s)) s++;
3041 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
3042 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
3043 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
3044 Perl_croak(aTHX_ "Not a perl script");
3045 while (*s == ' ' || *s == '\t') s++;
3047 * #! arg must be what we saw above. They can invoke it by
3048 * mentioning suidperl explicitly, but they may not add any strange
3049 * arguments beyond what #! says if they do invoke suidperl that way.
3051 len = strlen(validarg);
3052 if (strEQ(validarg," PHOOEY ") ||
3053 strnNE(s,validarg,len) || !isSPACE(s[len]))
3054 Perl_croak(aTHX_ "Args must match #! line");
3057 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
3058 PL_euid == PL_statbuf.st_uid)
3060 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3061 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3062 #endif /* IAMSUID */
3064 if (PL_euid) { /* oops, we're not the setuid root perl */
3065 (void)PerlIO_close(PL_rsfp);
3068 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
3069 (int)PERL_REVISION, (int)PERL_VERSION,
3070 (int)PERL_SUBVERSION), PL_origargv);
3072 Perl_croak(aTHX_ "Can't do setuid\n");
3075 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
3077 (void)setegid(PL_statbuf.st_gid);
3080 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
3082 #ifdef HAS_SETRESGID
3083 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
3085 PerlProc_setgid(PL_statbuf.st_gid);
3089 if (PerlProc_getegid() != PL_statbuf.st_gid)
3090 Perl_croak(aTHX_ "Can't do setegid!\n");
3092 if (PL_statbuf.st_mode & S_ISUID) {
3093 if (PL_statbuf.st_uid != PL_euid)
3095 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
3098 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
3100 #ifdef HAS_SETRESUID
3101 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
3103 PerlProc_setuid(PL_statbuf.st_uid);
3107 if (PerlProc_geteuid() != PL_statbuf.st_uid)
3108 Perl_croak(aTHX_ "Can't do seteuid!\n");
3110 else if (PL_uid) { /* oops, mustn't run as root */
3112 (void)seteuid((Uid_t)PL_uid);
3115 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
3117 #ifdef HAS_SETRESUID
3118 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
3120 PerlProc_setuid((Uid_t)PL_uid);
3124 if (PerlProc_geteuid() != PL_uid)
3125 Perl_croak(aTHX_ "Can't do seteuid!\n");
3128 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
3129 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
3132 else if (PL_preprocess)
3133 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
3134 else if (fdscript >= 0)
3135 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
3137 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
3139 /* We absolutely must clear out any saved ids here, so we */
3140 /* exec the real perl, substituting fd script for scriptname. */
3141 /* (We pass script name as "subdir" of fd, which perl will grok.) */
3142 PerlIO_rewind(PL_rsfp);
3143 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
3144 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3145 if (!PL_origargv[which])
3146 Perl_croak(aTHX_ "Permission denied");
3147 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
3148 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
3149 #if defined(HAS_FCNTL) && defined(F_SETFD)
3150 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
3152 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
3153 (int)PERL_REVISION, (int)PERL_VERSION,
3154 (int)PERL_SUBVERSION), PL_origargv);/* try again */
3155 Perl_croak(aTHX_ "Can't do setuid\n");
3156 #endif /* IAMSUID */
3158 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
3159 #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
3160 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3161 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3163 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3166 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3167 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3168 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3169 /* not set-id, must be wrapped */
3175 S_find_beginning(pTHX)
3177 register char *s, *s2;
3178 #ifdef MACOS_TRADITIONAL
3182 /* skip forward in input to the real script? */
3185 #ifdef MACOS_TRADITIONAL
3186 /* Since the Mac OS does not honor #! arguments for us, we do it ourselves */
3188 while (PL_doextract || gMacPerl_AlwaysExtract) {
3189 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3190 if (!gMacPerl_AlwaysExtract)
3191 Perl_croak(aTHX_ "No Perl script found in input\n");
3193 if (PL_doextract) /* require explicit override ? */
3194 if (!OverrideExtract(PL_origfilename))
3195 Perl_croak(aTHX_ "User aborted script\n");
3197 PL_doextract = FALSE;
3199 /* Pater peccavi, file does not have #! */
3200 PerlIO_rewind(PL_rsfp);
3205 while (PL_doextract) {
3206 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
3207 Perl_croak(aTHX_ "No Perl script found in input\n");
3210 if (*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))) {
3211 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3212 PL_doextract = FALSE;
3213 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3215 while (*s == ' ' || *s == '\t') s++;
3217 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3218 if (strnEQ(s2-4,"perl",4))
3220 while ((s = moreswitches(s)))
3223 #ifdef MACOS_TRADITIONAL
3224 /* We are always searching for the #!perl line in MacPerl,
3225 * so if we find it, still keep the line count correct
3226 * by counting lines we already skipped over
3228 for (; maclines > 0 ; maclines--)
3229 PerlIO_ungetc(PL_rsfp, '\n');
3233 /* gMacPerl_AlwaysExtract is false in MPW tool */
3234 } else if (gMacPerl_AlwaysExtract) {
3245 PL_uid = PerlProc_getuid();
3246 PL_euid = PerlProc_geteuid();
3247 PL_gid = PerlProc_getgid();
3248 PL_egid = PerlProc_getegid();
3250 PL_uid |= PL_gid << 16;
3251 PL_euid |= PL_egid << 16;
3253 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3257 S_forbid_setid(pTHX_ char *s)
3259 if (PL_euid != PL_uid)
3260 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3261 if (PL_egid != PL_gid)
3262 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
3266 Perl_init_debugger(pTHX)
3268 HV *ostash = PL_curstash;
3270 PL_curstash = PL_debstash;
3271 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3272 AvREAL_off(PL_dbargs);
3273 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3274 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3275 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
3276 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3277 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
3278 sv_setiv(PL_DBsingle, 0);
3279 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
3280 sv_setiv(PL_DBtrace, 0);
3281 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
3282 sv_setiv(PL_DBsignal, 0);
3283 PL_DBassertion = GvSV((gv_fetchpv("assertion", GV_ADDMULTI, SVt_PV)));
3284 sv_setiv(PL_DBassertion, 0);
3285 PL_curstash = ostash;
3288 #ifndef STRESS_REALLOC
3289 #define REASONABLE(size) (size)
3291 #define REASONABLE(size) (1) /* unreasonable */
3295 Perl_init_stacks(pTHX)
3297 /* start with 128-item stack and 8K cxstack */
3298 PL_curstackinfo = new_stackinfo(REASONABLE(128),
3299 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3300 PL_curstackinfo->si_type = PERLSI_MAIN;
3301 PL_curstack = PL_curstackinfo->si_stack;
3302 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
3304 PL_stack_base = AvARRAY(PL_curstack);
3305 PL_stack_sp = PL_stack_base;
3306 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
3308 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3311 PL_tmps_max = REASONABLE(128);
3313 New(54,PL_markstack,REASONABLE(32),I32);
3314 PL_markstack_ptr = PL_markstack;
3315 PL_markstack_max = PL_markstack + REASONABLE(32);
3319 New(54,PL_scopestack,REASONABLE(32),I32);
3320 PL_scopestack_ix = 0;
3321 PL_scopestack_max = REASONABLE(32);
3323 New(54,PL_savestack,REASONABLE(128),ANY);
3324 PL_savestack_ix = 0;
3325 PL_savestack_max = REASONABLE(128);
3327 New(54,PL_retstack,REASONABLE(16),OP*);
3329 PL_retstack_max = REASONABLE(16);
3337 while (PL_curstackinfo->si_next)
3338 PL_curstackinfo = PL_curstackinfo->si_next;
3339 while (PL_curstackinfo) {
3340 PERL_SI *p = PL_curstackinfo->si_prev;
3341 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3342 Safefree(PL_curstackinfo->si_cxstack);
3343 Safefree(PL_curstackinfo);
3344 PL_curstackinfo = p;
3346 Safefree(PL_tmps_stack);
3347 Safefree(PL_markstack);
3348 Safefree(PL_scopestack);
3349 Safefree(PL_savestack);
3350 Safefree(PL_retstack);
3359 lex_start(PL_linestr);
3361 PL_subname = newSVpvn("main",4);
3365 S_init_predump_symbols(pTHX)
3370 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3371 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3372 GvMULTI_on(PL_stdingv);
3373 io = GvIOp(PL_stdingv);
3374 IoTYPE(io) = IoTYPE_RDONLY;
3375 IoIFP(io) = PerlIO_stdin();
3376 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
3378 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3380 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
3383 IoTYPE(io) = IoTYPE_WRONLY;
3384 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
3386 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
3388 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3390 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3391 GvMULTI_on(PL_stderrgv);
3392 io = GvIOp(PL_stderrgv);
3393 IoTYPE(io) = IoTYPE_WRONLY;
3394 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
3395 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
3397 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3399 PL_statname = NEWSV(66,0); /* last filename we did stat on */
3402 Safefree(PL_osname);
3403 PL_osname = savepv(OSNAME);
3407 Perl_init_argv_symbols(pTHX_ register int argc, register char **argv)
3410 argc--,argv++; /* skip name of script */
3411 if (PL_doswitches) {
3412 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3415 if (argv[0][1] == '-' && !argv[0][2]) {
3419 if ((s = strchr(argv[0], '='))) {
3421 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
3424 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
3427 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3428 GvMULTI_on(PL_argvgv);
3429 (void)gv_AVadd(PL_argvgv);
3430 av_clear(GvAVn(PL_argvgv));
3431 for (; argc > 0; argc--,argv++) {
3432 SV *sv = newSVpv(argv[0],0);
3433 av_push(GvAVn(PL_argvgv),sv);
3434 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
3435 if (PL_unicode & PERL_UNICODE_ARGV_FLAG)
3438 if (PL_unicode & PERL_UNICODE_WIDESYSCALLS_FLAG) /* Sarathy? */
3439 (void)sv_utf8_decode(sv);
3444 #ifdef HAS_PROCSELFEXE
3445 /* This is a function so that we don't hold on to MAXPATHLEN
3446 bytes of stack longer than necessary
3449 S_procself_val(pTHX_ SV *sv, char *arg0)
3451 char buf[MAXPATHLEN];
3452 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
3454 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
3455 includes a spurious NUL which will cause $^X to fail in system
3456 or backticks (this will prevent extensions from being built and
3457 many tests from working). readlink is not meant to add a NUL.
3458 Normal readlink works fine.
3460 if (len > 0 && buf[len-1] == '\0') {
3464 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
3465 returning the text "unknown" from the readlink rather than the path
3466 to the executable (or returning an error from the readlink). Any valid
3467 path has a '/' in it somewhere, so use that to validate the result.
3468 See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
3470 if (len > 0 && memchr(buf, '/', len)) {
3471 sv_setpvn(sv,buf,len);
3477 #endif /* HAS_PROCSELFEXE */
3480 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
3486 PL_toptarget = NEWSV(0,0);
3487 sv_upgrade(PL_toptarget, SVt_PVFM);
3488 sv_setpvn(PL_toptarget, "", 0);
3489 PL_bodytarget = NEWSV(0,0);
3490 sv_upgrade(PL_bodytarget, SVt_PVFM);
3491 sv_setpvn(PL_bodytarget, "", 0);
3492 PL_formtarget = PL_bodytarget;
3496 init_argv_symbols(argc,argv);
3498 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
3499 #ifdef MACOS_TRADITIONAL
3500 /* $0 is not majick on a Mac */
3501 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3503 sv_setpv(GvSV(tmpgv),PL_origfilename);
3504 magicname("0", "0", 1);
3507 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV))) {/* $^X */
3508 #ifdef HAS_PROCSELFEXE
3509 S_procself_val(aTHX_ GvSV(tmpgv), PL_origargv[0]);
3512 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
3514 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
3518 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
3520 GvMULTI_on(PL_envgv);
3521 hv = GvHVn(PL_envgv);
3522 hv_magic(hv, Nullgv, PERL_MAGIC_env);
3523 #ifdef USE_ENVIRON_ARRAY
3524 /* Note that if the supplied env parameter is actually a copy
3525 of the global environ then it may now point to free'd memory
3526 if the environment has been modified since. To avoid this
3527 problem we treat env==NULL as meaning 'use the default'
3532 # ifdef USE_ITHREADS
3533 && PL_curinterp == aTHX
3537 environ[0] = Nullch;
3540 for (; *env; env++) {
3541 if (!(s = strchr(*env,'=')))
3548 sv = newSVpv(s+1, 0);
3549 (void)hv_store(hv, *env, s - *env, sv, 0);
3553 #endif /* USE_ENVIRON_ARRAY */
3556 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV))) {
3557 SvREADONLY_off(GvSV(tmpgv));
3558 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
3559 SvREADONLY_on(GvSV(tmpgv));
3561 #ifdef THREADS_HAVE_PIDS
3562 PL_ppid = (IV)getppid();
3565 /* touch @F array to prevent spurious warnings 20020415 MJD */
3567 (void) get_av("main::F", TRUE | GV_ADDMULTI);
3569 /* touch @- and @+ arrays to prevent spurious warnings 20020415 MJD */
3570 (void) get_av("main::-", TRUE | GV_ADDMULTI);
3571 (void) get_av("main::+", TRUE | GV_ADDMULTI);
3575 S_init_perllib(pTHX)
3580 s = PerlEnv_getenv("PERL5LIB");
3582 incpush(s, TRUE, TRUE, TRUE);
3584 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE, TRUE);
3586 /* Treat PERL5?LIB as a possible search list logical name -- the
3587 * "natural" VMS idiom for a Unix path string. We allow each
3588 * element to be a set of |-separated directories for compatibility.
3592 if (my_trnlnm("PERL5LIB",buf,0))
3593 do { incpush(buf,TRUE,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
3595 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE,TRUE);
3599 /* Use the ~-expanded versions of APPLLIB (undocumented),
3600 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
3603 incpush(APPLLIB_EXP, TRUE, TRUE, TRUE);
3607 incpush(ARCHLIB_EXP, FALSE, FALSE, TRUE);
3609 #ifdef MACOS_TRADITIONAL
3612 SV * privdir = NEWSV(55, 0);
3613 char * macperl = PerlEnv_getenv("MACPERL");
3618 Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl);
3619 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3620 incpush(SvPVX(privdir), TRUE, FALSE, TRUE);
3621 Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl);
3622 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3623 incpush(SvPVX(privdir), TRUE, FALSE, TRUE);
3625 SvREFCNT_dec(privdir);
3628 incpush(":", FALSE, FALSE, TRUE);
3631 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
3634 incpush(PRIVLIB_EXP, TRUE, FALSE, TRUE);
3636 incpush(PRIVLIB_EXP, FALSE, FALSE, TRUE);
3640 /* sitearch is always relative to sitelib on Windows for
3641 * DLL-based path intuition to work correctly */
3642 # if !defined(WIN32)
3643 incpush(SITEARCH_EXP, FALSE, FALSE, TRUE);
3649 /* this picks up sitearch as well */
3650 incpush(SITELIB_EXP, TRUE, FALSE, TRUE);
3652 incpush(SITELIB_EXP, FALSE, FALSE, TRUE);
3656 #ifdef SITELIB_STEM /* Search for version-specific dirs below here */
3657 incpush(SITELIB_STEM, FALSE, TRUE, TRUE);
3660 #ifdef PERL_VENDORARCH_EXP
3661 /* vendorarch is always relative to vendorlib on Windows for
3662 * DLL-based path intuition to work correctly */
3663 # if !defined(WIN32)
3664 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE, TRUE);
3668 #ifdef PERL_VENDORLIB_EXP
3670 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE, TRUE); /* this picks up vendorarch as well */
3672 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE, TRUE);
3676 #ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
3677 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE, TRUE);
3680 #ifdef PERL_OTHERLIBDIRS
3681 incpush(PERL_OTHERLIBDIRS, TRUE, TRUE, TRUE);
3685 incpush(".", FALSE, FALSE, TRUE);
3686 #endif /* MACOS_TRADITIONAL */
3689 #if defined(DOSISH) || defined(EPOC)
3690 # define PERLLIB_SEP ';'
3693 # define PERLLIB_SEP '|'
3695 # if defined(MACOS_TRADITIONAL)
3696 # define PERLLIB_SEP ','
3698 # define PERLLIB_SEP ':'
3702 #ifndef PERLLIB_MANGLE
3703 # define PERLLIB_MANGLE(s,n) (s)
3707 S_incpush(pTHX_ char *p, int addsubdirs, int addoldvers, int usesep)
3709 SV *subdir = Nullsv;
3714 if (addsubdirs || addoldvers) {
3715 subdir = sv_newmortal();
3718 /* Break at all separators */
3720 SV *libdir = NEWSV(55,0);
3723 /* skip any consecutive separators */
3725 while ( *p == PERLLIB_SEP ) {
3726 /* Uncomment the next line for PATH semantics */
3727 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
3732 if ( usesep && (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
3733 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
3738 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
3739 p = Nullch; /* break out */
3741 #ifdef MACOS_TRADITIONAL
3742 if (!strchr(SvPVX(libdir), ':')) {
3745 sv_setpv(libdir, MacPerl_CanonDir(SvPVX(libdir), buf, 0));
3747 if (SvPVX(libdir)[SvCUR(libdir)-1] != ':')
3748 sv_catpv(libdir, ":");
3752 * BEFORE pushing libdir onto @INC we may first push version- and
3753 * archname-specific sub-directories.
3755 if (addsubdirs || addoldvers) {
3756 #ifdef PERL_INC_VERSION_LIST
3757 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
3758 const char *incverlist[] = { PERL_INC_VERSION_LIST };
3759 const char **incver;
3766 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
3768 while (unix[len-1] == '/') len--; /* Cosmetic */
3769 sv_usepvn(libdir,unix,len);
3772 PerlIO_printf(Perl_error_log,
3773 "Failed to unixify @INC element \"%s\"\n",
3777 #ifdef MACOS_TRADITIONAL
3778 #define PERL_AV_SUFFIX_FMT ""
3779 #define PERL_ARCH_FMT "%s:"
3780 #define PERL_ARCH_FMT_PATH PERL_FS_VER_FMT PERL_AV_SUFFIX_FMT
3782 #define PERL_AV_SUFFIX_FMT "/"
3783 #define PERL_ARCH_FMT "/%s"
3784 #define PERL_ARCH_FMT_PATH PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT
3786 /* .../version/archname if -d .../version/archname */
3787 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH PERL_ARCH_FMT,
3789 (int)PERL_REVISION, (int)PERL_VERSION,
3790 (int)PERL_SUBVERSION, ARCHNAME);
3791 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3792 S_ISDIR(tmpstatbuf.st_mode))
3793 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3795 /* .../version if -d .../version */
3796 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH, libdir,
3797 (int)PERL_REVISION, (int)PERL_VERSION,
3798 (int)PERL_SUBVERSION);
3799 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3800 S_ISDIR(tmpstatbuf.st_mode))
3801 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3803 /* .../archname if -d .../archname */
3804 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, ARCHNAME);
3805 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3806 S_ISDIR(tmpstatbuf.st_mode))
3807 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3810 #ifdef PERL_INC_VERSION_LIST
3812 for (incver = incverlist; *incver; incver++) {
3813 /* .../xxx if -d .../xxx */
3814 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, *incver);
3815 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3816 S_ISDIR(tmpstatbuf.st_mode))
3817 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3823 /* finally push this lib directory on the end of @INC */
3824 av_push(GvAVn(PL_incgv), libdir);
3828 #ifdef USE_5005THREADS
3829 STATIC struct perl_thread *
3830 S_init_main_thread(pTHX)
3832 #if !defined(PERL_IMPLICIT_CONTEXT)
3833 struct perl_thread *thr;
3837 Newz(53, thr, 1, struct perl_thread);
3838 PL_curcop = &PL_compiling;
3839 thr->interp = PERL_GET_INTERP;
3840 thr->cvcache = newHV();
3841 thr->threadsv = newAV();
3842 /* thr->threadsvp is set when find_threadsv is called */
3843 thr->specific = newAV();
3844 thr->flags = THRf_R_JOINABLE;
3845 MUTEX_INIT(&thr->mutex);
3846 /* Handcraft thrsv similarly to mess_sv */
3847 New(53, PL_thrsv, 1, SV);
3848 Newz(53, xpv, 1, XPV);
3849 SvFLAGS(PL_thrsv) = SVt_PV;
3850 SvANY(PL_thrsv) = (void*)xpv;
3851 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
3852 SvPVX(PL_thrsv) = (char*)thr;
3853 SvCUR_set(PL_thrsv, sizeof(thr));
3854 SvLEN_set(PL_thrsv, sizeof(thr));
3855 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
3856 thr->oursv = PL_thrsv;
3857 PL_chopset = " \n-";
3860 MUTEX_LOCK(&PL_threads_mutex);
3866 MUTEX_UNLOCK(&PL_threads_mutex);
3868 #ifdef HAVE_THREAD_INTERN
3869 Perl_init_thread_intern(thr);
3872 #ifdef SET_THREAD_SELF
3873 SET_THREAD_SELF(thr);
3875 thr->self = pthread_self();
3876 #endif /* SET_THREAD_SELF */
3880 * These must come after the thread self setting
3881 * because sv_setpvn does SvTAINT and the taint
3882 * fields thread selfness being set.
3884 PL_toptarget = NEWSV(0,0);
3885 sv_upgrade(PL_toptarget, SVt_PVFM);
3886 sv_setpvn(PL_toptarget, "", 0);
3887 PL_bodytarget = NEWSV(0,0);
3888 sv_upgrade(PL_bodytarget, SVt_PVFM);
3889 sv_setpvn(PL_bodytarget, "", 0);
3890 PL_formtarget = PL_bodytarget;
3891 thr->errsv = newSVpvn("", 0);
3892 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
3895 PL_peepp = MEMBER_TO_FPTR(Perl_peep);
3896 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3897 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3898 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3899 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3900 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
3902 PL_reginterp_cnt = 0;
3906 #endif /* USE_5005THREADS */
3909 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
3912 line_t oldline = CopLINE(PL_curcop);
3918 while (AvFILL(paramList) >= 0) {
3919 cv = (CV*)av_shift(paramList);
3921 if (paramList == PL_beginav) {
3922 /* save PL_beginav for compiler */
3923 if (! PL_beginav_save)
3924 PL_beginav_save = newAV();
3925 av_push(PL_beginav_save, (SV*)cv);
3927 else if (paramList == PL_checkav) {
3928 /* save PL_checkav for compiler */
3929 if (! PL_checkav_save)
3930 PL_checkav_save = newAV();
3931 av_push(PL_checkav_save, (SV*)cv);
3936 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3937 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_list_body), cv);
3943 #ifndef PERL_FLEXIBLE_EXCEPTIONS
3947 (void)SvPV(atsv, len);
3949 PL_curcop = &PL_compiling;
3950 CopLINE_set(PL_curcop, oldline);
3951 if (paramList == PL_beginav)
3952 sv_catpv(atsv, "BEGIN failed--compilation aborted");
3954 Perl_sv_catpvf(aTHX_ atsv,
3955 "%s failed--call queue aborted",
3956 paramList == PL_checkav ? "CHECK"
3957 : paramList == PL_initav ? "INIT"
3959 while (PL_scopestack_ix > oldscope)
3962 Perl_croak(aTHX_ "%"SVf"", atsv);
3969 /* my_exit() was called */
3970 while (PL_scopestack_ix > oldscope)
3973 PL_curstash = PL_defstash;
3974 PL_curcop = &PL_compiling;
3975 CopLINE_set(PL_curcop, oldline);
3977 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
3978 if (paramList == PL_beginav)
3979 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
3981 Perl_croak(aTHX_ "%s failed--call queue aborted",
3982 paramList == PL_checkav ? "CHECK"
3983 : paramList == PL_initav ? "INIT"
3990 PL_curcop = &PL_compiling;
3991 CopLINE_set(PL_curcop, oldline);
3994 PerlIO_printf(Perl_error_log, "panic: restartop\n");
4002 #ifdef PERL_FLEXIBLE_EXCEPTIONS
4004 S_vcall_list_body(pTHX_ va_list args)
4006 CV *cv = va_arg(args, CV*);
4007 return call_list_body(cv);
4012 S_call_list_body(pTHX_ CV *cv)
4014 PUSHMARK(PL_stack_sp);
4015 call_sv((SV*)cv, G_EVAL|G_DISCARD);
4020 Perl_my_exit(pTHX_ U32 status)
4022 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
4023 thr, (unsigned long) status));
4032 STATUS_NATIVE_SET(status);
4039 Perl_my_failure_exit(pTHX)
4042 if (vaxc$errno & 1) {
4043 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
4044 STATUS_NATIVE_SET(44);
4047 if (!vaxc$errno && errno) /* unlikely */
4048 STATUS_NATIVE_SET(44);
4050 STATUS_NATIVE_SET(vaxc$errno);
4055 STATUS_POSIX_SET(errno);
4057 exitstatus = STATUS_POSIX >> 8;
4058 if (exitstatus & 255)
4059 STATUS_POSIX_SET(exitstatus);
4061 STATUS_POSIX_SET(255);
4068 S_my_exit_jump(pTHX)
4070 register PERL_CONTEXT *cx;
4075 SvREFCNT_dec(PL_e_script);
4076 PL_e_script = Nullsv;
4079 POPSTACK_TO(PL_mainstack);
4080 if (cxstack_ix >= 0) {
4083 POPBLOCK(cx,PL_curpm);
4091 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen)
4094 p = SvPVX(PL_e_script);
4095 nl = strchr(p, '\n');
4096 nl = (nl) ? nl+1 : SvEND(PL_e_script);
4098 filter_del(read_e_script);
4101 sv_catpvn(buf_sv, p, nl-p);
4102 sv_chop(PL_e_script, nl);