3 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999,
4 * 2000, 2001, 2002, 2003, 2004, 2005, by Larry Wall and others
6 * You may distribute under the terms of either the GNU General Public
7 * License or the Artistic License, as specified in the README file.
12 * "A ship then new they built for him/of mithril and of elven glass" --Bilbo
15 /* This file contains the top-level functions that are used to create, use
16 * and destroy a perl interpreter, plus the functions used by XS code to
17 * call back into perl. Note that it does not contain the actual main()
18 * function of the interpreter; that can be found in perlmain.c
23 * Be proud that perl(1) may proclaim:
24 * Setuid Perl scripts are safer than C programs ...
25 * Do not abandon (deprecate) suidperl. Do not advocate C wrappers.
27 * The flow was: perl starts, notices script is suid, execs suidperl with same
28 * arguments; suidperl opens script, checks many things, sets itself with
29 * right UID, execs perl with similar arguments but with script pre-opened on
30 * /dev/fd/xxx; perl checks script is as should be and does work. This was
31 * insecure: see perlsec(1) for many problems with this approach.
33 * The "correct" flow should be: perl starts, opens script and notices it is
34 * suid, checks many things, execs suidperl with similar arguments but with
35 * script on /dev/fd/xxx; suidperl checks script and /dev/fd/xxx object are
36 * same, checks arguments match #! line, sets itself with right UID, execs
37 * perl with same arguments; perl checks many things and does work.
39 * (Opening the script in perl instead of suidperl, we "lose" scripts that
40 * are readable to the target UID but not to the invoker. Where did
41 * unreadable scripts work anyway?)
43 * For now, suidperl and perl are pretty much the same large and cumbersome
44 * program, so suidperl can check its argument list (see comments elsewhere).
47 * Original bug report:
48 * http://bugs.perl.org/index.html?req=bug_id&bug_id=20010322.218
49 * http://rt.perl.org/rt2/Ticket/Display.html?id=6511
50 * Comments and discussion with Debian:
51 * http://bugs.debian.org/203426
52 * http://bugs.debian.org/220486
53 * Debian Security Advisory DSA 431-1 (does not fully fix problem):
54 * http://www.debian.org/security/2004/dsa-431
56 * http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0618
57 * Previous versions of this patch sent to perl5-porters:
58 * http://www.mail-archive.com/perl5-porters@perl.org/msg71953.html
59 * http://www.mail-archive.com/perl5-porters@perl.org/msg75245.html
60 * http://www.mail-archive.com/perl5-porters@perl.org/msg75563.html
61 * http://www.mail-archive.com/perl5-porters@perl.org/msg75635.html
63 Paul Szabo - psz@maths.usyd.edu.au http://www.maths.usyd.edu.au:8000/u/psz/
64 School of Mathematics and Statistics University of Sydney 2006 Australia
68 * Use truthful, neat, specific error messages.
69 * Cannot always hide the truth; security must not depend on doing so.
73 * Use global(?), thread-local fdscript for easier checks.
74 * (I do not understand how we could possibly get a thread race:
75 * do not all threads go through the same initialization? Or in
76 * fact, are not threads started only after we get the script and
77 * so know what to do? Oh well, make things super-safe...)
81 #define PERL_IN_PERL_C
83 #include "patchlevel.h" /* for local_patches */
87 char *nw_get_sitelib(const char *pl);
90 /* XXX If this causes problems, set i_unistd=undef in the hint file. */
95 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
97 # include <sys/wait.h>
113 #if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
114 char *getenv (char *); /* Usually in <stdlib.h> */
117 static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
125 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
132 S_init_tls_and_interp(PerlInterpreter *my_perl)
136 PERL_SET_INTERP(my_perl);
137 #if defined(USE_ITHREADS)
140 PERL_SET_THX(my_perl);
142 MUTEX_INIT(&PL_dollarzero_mutex);
146 PERL_SET_THX(my_perl);
150 #ifdef PERL_IMPLICIT_SYS
152 perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
153 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
154 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
155 struct IPerlDir* ipD, struct IPerlSock* ipS,
156 struct IPerlProc* ipP)
158 PerlInterpreter *my_perl;
159 /* New() needs interpreter, so call malloc() instead */
160 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
161 S_init_tls_and_interp(my_perl);
162 Zero(my_perl, 1, PerlInterpreter);
178 =head1 Embedding Functions
180 =for apidoc perl_alloc
182 Allocates a new Perl interpreter. See L<perlembed>.
190 PerlInterpreter *my_perl;
192 /* New() needs interpreter, so call malloc() instead */
193 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
195 S_init_tls_and_interp(my_perl);
196 return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter);
198 #endif /* PERL_IMPLICIT_SYS */
201 =for apidoc perl_construct
203 Initializes a new Perl interpreter. See L<perlembed>.
209 perl_construct(pTHXx)
214 PL_perl_destruct_level = 1;
216 if (PL_perl_destruct_level > 0)
219 /* Init the real globals (and main thread)? */
221 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
223 PL_linestr = NEWSV(65,79);
224 sv_upgrade(PL_linestr,SVt_PVIV);
226 if (!SvREADONLY(&PL_sv_undef)) {
227 /* set read-only and try to insure than we wont see REFCNT==0
230 SvREADONLY_on(&PL_sv_undef);
231 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
233 sv_setpv(&PL_sv_no,PL_No);
234 /* value lookup in void context - happens to have the side effect
235 of caching the numeric forms. */
238 SvREADONLY_on(&PL_sv_no);
239 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
241 sv_setpv(&PL_sv_yes,PL_Yes);
244 SvREADONLY_on(&PL_sv_yes);
245 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
247 SvREADONLY_on(&PL_sv_placeholder);
248 SvREFCNT(&PL_sv_placeholder) = (~(U32)0)/2;
251 PL_sighandlerp = Perl_sighandler;
252 PL_pidstatus = newHV();
255 PL_rs = newSVpvn("\n", 1);
260 PL_lex_state = LEX_NOTPARSING;
266 SET_NUMERIC_STANDARD();
268 #if defined(LOCAL_PATCH_COUNT)
269 PL_localpatches = local_patches; /* For possible -v */
272 #ifdef HAVE_INTERP_INTERN
276 PerlIO_init(aTHX); /* Hook to IO system */
278 PL_fdpid = newAV(); /* for remembering popen pids by fd */
279 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
280 PL_errors = newSVpvn("",0);
281 sv_setpvn(PERL_DEBUG_PAD(0), "", 0); /* For regex debugging. */
282 sv_setpvn(PERL_DEBUG_PAD(1), "", 0); /* ext/re needs these */
283 sv_setpvn(PERL_DEBUG_PAD(2), "", 0); /* even without DEBUGGING. */
285 PL_regex_padav = newAV();
286 av_push(PL_regex_padav,(SV*)newAV()); /* First entry is an array of empty elements */
287 PL_regex_pad = AvARRAY(PL_regex_padav);
289 #ifdef USE_REENTRANT_API
290 Perl_reentrant_init(aTHX);
293 /* Note that strtab is a rather special HV. Assumptions are made
294 about not iterating on it, and not adding tie magic to it.
295 It is properly deallocated in perl_destruct() */
298 HvSHAREKEYS_off(PL_strtab); /* mandatory */
299 hv_ksplit(PL_strtab, 512);
301 #if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
302 _dyld_lookup_and_bind
303 ("__environ", (unsigned long *) &environ_pointer, NULL);
307 # ifdef USE_ENVIRON_ARRAY
308 PL_origenviron = environ;
312 /* Use sysconf(_SC_CLK_TCK) if available, if not
313 * available or if the sysconf() fails, use the HZ.
314 * BeOS has those, but returns the wrong value.
315 * The HZ if not originally defined has been by now
316 * been defined as CLK_TCK, if available. */
317 #if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK) && !defined(__BEOS__)
318 PL_clocktick = sysconf(_SC_CLK_TCK);
319 if (PL_clocktick <= 0)
323 PL_stashcache = newHV();
325 PL_patchlevel = newSVpv(
326 Perl_form(aTHX_ "%d.%d.%d",
329 (int)PERL_SUBVERSION ), 0
333 if (!PL_mmap_page_size) {
334 #if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
336 SETERRNO(0, SS_NORMAL);
338 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
340 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
342 if ((long) PL_mmap_page_size < 0) {
345 (void) SvUPGRADE(error, SVt_PV);
346 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
349 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
353 # ifdef HAS_GETPAGESIZE
354 PL_mmap_page_size = getpagesize();
356 # if defined(I_SYS_PARAM) && defined(PAGESIZE)
357 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
361 if (PL_mmap_page_size <= 0)
362 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
363 (IV) PL_mmap_page_size);
365 #endif /* HAS_MMAP */
367 #if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
368 PL_timesbase.tms_utime = 0;
369 PL_timesbase.tms_stime = 0;
370 PL_timesbase.tms_cutime = 0;
371 PL_timesbase.tms_cstime = 0;
378 =for apidoc nothreadhook
380 Stub that provides thread hook for perl_destruct when there are
387 Perl_nothreadhook(pTHX)
392 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
394 Perl_dump_sv_child(pTHX_ SV *sv)
397 int sock = PL_dumper_fd;
403 PerlIO_flush(Perl_debug_log);
405 got = write(sock, &sv, sizeof(sv));
408 perror("Debug leaking scalars parent write failed");
411 if(got < sizeof(target)) {
412 perror("Debug leaking scalars parent short write");
416 got = read(sock, &target, sizeof(target));
419 perror("Debug leaking scalars parent read failed");
422 if(got < sizeof(target)) {
423 perror("Debug leaking scalars parent short read");
428 perror("Debug leaking scalars parent target != sv");
435 =for apidoc perl_destruct
437 Shuts down a Perl interpreter. See L<perlembed>.
446 volatile int destruct_level; /* 0=none, 1=full, 2=full with checks */
448 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
452 /* wait for all pseudo-forked children to finish */
453 PERL_WAIT_FOR_CHILDREN;
455 destruct_level = PL_perl_destruct_level;
459 if ((s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL"))) {
460 const int i = atoi(s);
461 if (destruct_level < i)
467 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
473 if (PL_endav && !PL_minus_c)
474 call_list(PL_scopestack_ix, PL_endav);
480 /* Need to flush since END blocks can produce output */
483 if (CALL_FPTR(PL_threadhook)(aTHX)) {
484 /* Threads hook has vetoed further cleanup */
485 return STATUS_NATIVE_EXPORT;
488 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
489 if (destruct_level != 0) {
490 /* Fork here to create a child. Our child's job is to preserve the
491 state of scalars prior to destruction, so that we can instruct it
492 to dump any scalars that we later find have leaked.
493 There's no subtlety in this code - it assumes POSIX, and it doesn't
497 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
498 perror("Debug leaking scalars socketpair failed");
504 perror("Debug leaking scalars fork failed");
509 /* We are the child */
514 ssize_t got = read(sock, &target, sizeof(target));
519 perror("Debug leaking scalars child read failed");
522 if(got < sizeof(target)) {
523 perror("Debug leaking scalars child short read");
527 PerlIO_flush(Perl_debug_log);
529 /* Write something back as synchronisation. */
530 got = write(sock, &target, sizeof(target));
533 perror("Debug leaking scalars child write failed");
536 if(got < sizeof(target)) {
537 perror("Debug leaking scalars child short write");
543 PL_dumper_fd = fd[0];
548 /* We must account for everything. */
550 /* Destroy the main CV and syntax tree */
551 /* Do this now, because destroying ops can cause new SVs to be generated
552 in Perl_pad_swipe, and when running with -DDEBUG_LEAKING_SCALARS they
553 PL_curcop to point to a valid op from which the filename structure
555 PL_curcop = &PL_compiling;
557 /* ensure comppad/curpad to refer to main's pad */
558 if (CvPADLIST(PL_main_cv)) {
559 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
561 op_free(PL_main_root);
562 PL_main_root = Nullop;
564 PL_main_start = Nullop;
565 SvREFCNT_dec(PL_main_cv);
569 /* Tell PerlIO we are about to tear things apart in case
570 we have layers which are using resources that should
574 PerlIO_destruct(aTHX);
576 if (PL_sv_objcount) {
578 * Try to destruct global references. We do this first so that the
579 * destructors and destructees still exist. Some sv's might remain.
580 * Non-referenced objects are on their own.
586 /* unhook hooks which will soon be, or use, destroyed data */
587 SvREFCNT_dec(PL_warnhook);
588 PL_warnhook = Nullsv;
589 SvREFCNT_dec(PL_diehook);
592 /* call exit list functions */
593 while (PL_exitlistlen-- > 0)
594 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
596 Safefree(PL_exitlist);
601 if (destruct_level == 0){
603 DEBUG_P(debprofdump());
605 #if defined(PERLIO_LAYERS)
606 /* No more IO - including error messages ! */
607 PerlIO_cleanup(aTHX);
610 /* The exit() function will do everything that needs doing. */
611 return STATUS_NATIVE_EXPORT;
614 /* jettison our possibly duplicated environment */
615 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
616 * so we certainly shouldn't free it here
619 #if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
620 if (environ != PL_origenviron && !PL_use_safe_putenv
622 /* only main thread can free environ[0] contents */
623 && PL_curinterp == aTHX
629 for (i = 0; environ[i]; i++)
630 safesysfree(environ[i]);
632 /* Must use safesysfree() when working with environ. */
633 safesysfree(environ);
635 environ = PL_origenviron;
638 #endif /* !PERL_MICRO */
640 /* reset so print() ends up where we expect */
644 /* the syntax tree is shared between clones
645 * so op_free(PL_main_root) only ReREFCNT_dec's
646 * REGEXPs in the parent interpreter
647 * we need to manually ReREFCNT_dec for the clones
650 I32 i = AvFILLp(PL_regex_padav) + 1;
651 SV **ary = AvARRAY(PL_regex_padav);
656 if (SvFLAGS(resv) & SVf_BREAK) {
657 /* this is PL_reg_curpm, already freed
658 * flag is set in regexec.c:S_regtry
660 SvFLAGS(resv) &= ~SVf_BREAK;
662 else if(SvREPADTMP(resv)) {
663 SvREPADTMP_off(resv);
665 else if(SvIOKp(resv)) {
666 REGEXP *re = INT2PTR(REGEXP *,SvIVX(resv));
671 SvREFCNT_dec(PL_regex_padav);
672 PL_regex_padav = Nullav;
676 SvREFCNT_dec((SV*) PL_stashcache);
677 PL_stashcache = NULL;
679 /* loosen bonds of global variables */
682 (void)PerlIO_close(PL_rsfp);
686 /* Filters for program text */
687 SvREFCNT_dec(PL_rsfp_filters);
688 PL_rsfp_filters = Nullav;
691 PL_preprocess = FALSE;
697 PL_doswitches = FALSE;
698 PL_dowarn = G_WARN_OFF;
699 PL_doextract = FALSE;
700 PL_sawampersand = FALSE; /* must save all match strings */
703 Safefree(PL_inplace);
705 SvREFCNT_dec(PL_patchlevel);
708 SvREFCNT_dec(PL_e_script);
709 PL_e_script = Nullsv;
714 /* magical thingies */
716 SvREFCNT_dec(PL_ofs_sv); /* $, */
719 SvREFCNT_dec(PL_ors_sv); /* $\ */
722 SvREFCNT_dec(PL_rs); /* $/ */
725 PL_multiline = 0; /* $* */
726 Safefree(PL_osname); /* $^O */
729 SvREFCNT_dec(PL_statname);
730 PL_statname = Nullsv;
733 /* defgv, aka *_ should be taken care of elsewhere */
735 /* clean up after study() */
736 SvREFCNT_dec(PL_lastscream);
737 PL_lastscream = Nullsv;
738 Safefree(PL_screamfirst);
740 Safefree(PL_screamnext);
744 Safefree(PL_efloatbuf);
745 PL_efloatbuf = Nullch;
748 /* startup and shutdown function lists */
749 SvREFCNT_dec(PL_beginav);
750 SvREFCNT_dec(PL_beginav_save);
751 SvREFCNT_dec(PL_endav);
752 SvREFCNT_dec(PL_checkav);
753 SvREFCNT_dec(PL_checkav_save);
754 SvREFCNT_dec(PL_initav);
756 PL_beginav_save = Nullav;
759 PL_checkav_save = Nullav;
762 /* shortcuts just get cleared */
768 PL_argvoutgv = Nullgv;
770 PL_stderrgv = Nullgv;
771 PL_last_in_gv = Nullgv;
776 PL_DBsingle = Nullsv;
778 PL_DBsignal = Nullsv;
779 PL_DBassertion = Nullsv;
782 PL_debstash = Nullhv;
784 SvREFCNT_dec(PL_argvout_stack);
785 PL_argvout_stack = Nullav;
787 SvREFCNT_dec(PL_modglobal);
788 PL_modglobal = Nullhv;
789 SvREFCNT_dec(PL_preambleav);
790 PL_preambleav = Nullav;
791 SvREFCNT_dec(PL_subname);
793 SvREFCNT_dec(PL_linestr);
795 SvREFCNT_dec(PL_pidstatus);
796 PL_pidstatus = Nullhv;
797 SvREFCNT_dec(PL_toptarget);
798 PL_toptarget = Nullsv;
799 SvREFCNT_dec(PL_bodytarget);
800 PL_bodytarget = Nullsv;
801 PL_formtarget = Nullsv;
803 /* free locale stuff */
804 #ifdef USE_LOCALE_COLLATE
805 Safefree(PL_collation_name);
806 PL_collation_name = Nullch;
809 #ifdef USE_LOCALE_NUMERIC
810 Safefree(PL_numeric_name);
811 PL_numeric_name = Nullch;
812 SvREFCNT_dec(PL_numeric_radix_sv);
813 PL_numeric_radix_sv = Nullsv;
816 /* clear utf8 character classes */
817 SvREFCNT_dec(PL_utf8_alnum);
818 SvREFCNT_dec(PL_utf8_alnumc);
819 SvREFCNT_dec(PL_utf8_ascii);
820 SvREFCNT_dec(PL_utf8_alpha);
821 SvREFCNT_dec(PL_utf8_space);
822 SvREFCNT_dec(PL_utf8_cntrl);
823 SvREFCNT_dec(PL_utf8_graph);
824 SvREFCNT_dec(PL_utf8_digit);
825 SvREFCNT_dec(PL_utf8_upper);
826 SvREFCNT_dec(PL_utf8_lower);
827 SvREFCNT_dec(PL_utf8_print);
828 SvREFCNT_dec(PL_utf8_punct);
829 SvREFCNT_dec(PL_utf8_xdigit);
830 SvREFCNT_dec(PL_utf8_mark);
831 SvREFCNT_dec(PL_utf8_toupper);
832 SvREFCNT_dec(PL_utf8_totitle);
833 SvREFCNT_dec(PL_utf8_tolower);
834 SvREFCNT_dec(PL_utf8_tofold);
835 SvREFCNT_dec(PL_utf8_idstart);
836 SvREFCNT_dec(PL_utf8_idcont);
837 PL_utf8_alnum = Nullsv;
838 PL_utf8_alnumc = Nullsv;
839 PL_utf8_ascii = Nullsv;
840 PL_utf8_alpha = Nullsv;
841 PL_utf8_space = Nullsv;
842 PL_utf8_cntrl = Nullsv;
843 PL_utf8_graph = Nullsv;
844 PL_utf8_digit = Nullsv;
845 PL_utf8_upper = Nullsv;
846 PL_utf8_lower = Nullsv;
847 PL_utf8_print = Nullsv;
848 PL_utf8_punct = Nullsv;
849 PL_utf8_xdigit = Nullsv;
850 PL_utf8_mark = Nullsv;
851 PL_utf8_toupper = Nullsv;
852 PL_utf8_totitle = Nullsv;
853 PL_utf8_tolower = Nullsv;
854 PL_utf8_tofold = Nullsv;
855 PL_utf8_idstart = Nullsv;
856 PL_utf8_idcont = Nullsv;
858 if (!specialWARN(PL_compiling.cop_warnings))
859 SvREFCNT_dec(PL_compiling.cop_warnings);
860 PL_compiling.cop_warnings = Nullsv;
861 if (!specialCopIO(PL_compiling.cop_io))
862 SvREFCNT_dec(PL_compiling.cop_io);
863 PL_compiling.cop_io = Nullsv;
864 CopFILE_free(&PL_compiling);
865 CopSTASH_free(&PL_compiling);
867 /* Prepare to destruct main symbol table. */
872 SvREFCNT_dec(PL_curstname);
873 PL_curstname = Nullsv;
875 /* clear queued errors */
876 SvREFCNT_dec(PL_errors);
880 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
881 if (PL_scopestack_ix != 0)
882 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
883 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
884 (long)PL_scopestack_ix);
885 if (PL_savestack_ix != 0)
886 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
887 "Unbalanced saves: %ld more saves than restores\n",
888 (long)PL_savestack_ix);
889 if (PL_tmps_floor != -1)
890 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
891 (long)PL_tmps_floor + 1);
892 if (cxstack_ix != -1)
893 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
894 (long)cxstack_ix + 1);
897 /* Now absolutely destruct everything, somehow or other, loops or no. */
898 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
899 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
901 /* the 2 is for PL_fdpid and PL_strtab */
902 while (PL_sv_count > 2 && sv_clean_all())
905 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
906 SvFLAGS(PL_fdpid) |= SVt_PVAV;
907 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
908 SvFLAGS(PL_strtab) |= SVt_PVHV;
910 AvREAL_off(PL_fdpid); /* no surviving entries */
911 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
914 #ifdef HAVE_INTERP_INTERN
918 /* Destruct the global string table. */
920 /* Yell and reset the HeVAL() slots that are still holding refcounts,
921 * so that sv_free() won't fail on them.
922 * Now that the global string table is using a single hunk of memory
923 * for both HE and HEK, we either need to explicitly unshare it the
924 * correct way, or actually free things here.
927 const I32 max = HvMAX(PL_strtab);
928 HE **array = HvARRAY(PL_strtab);
932 if (hent && ckWARN_d(WARN_INTERNAL)) {
933 HE *next = HeNEXT(hent);
934 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
935 "Unbalanced string table refcount: (%d) for \"%s\"",
936 HeVAL(hent) - Nullsv, HeKEY(hent));
948 HvARRAY(PL_strtab) = 0;
949 HvTOTALKEYS(PL_strtab) = 0;
950 HvFILL(PL_strtab) = 0;
952 SvREFCNT_dec(PL_strtab);
955 /* free the pointer tables used for cloning */
956 ptr_table_free(PL_ptr_table);
957 PL_ptr_table = (PTR_TBL_t*)NULL;
960 /* free special SVs */
962 SvREFCNT(&PL_sv_yes) = 0;
963 sv_clear(&PL_sv_yes);
964 SvANY(&PL_sv_yes) = NULL;
965 SvFLAGS(&PL_sv_yes) = 0;
967 SvREFCNT(&PL_sv_no) = 0;
969 SvANY(&PL_sv_no) = NULL;
970 SvFLAGS(&PL_sv_no) = 0;
974 for (i=0; i<=2; i++) {
975 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
976 sv_clear(PERL_DEBUG_PAD(i));
977 SvANY(PERL_DEBUG_PAD(i)) = NULL;
978 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
982 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
983 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
985 #ifdef DEBUG_LEAKING_SCALARS
986 if (PL_sv_count != 0) {
991 for (sva = PL_sv_arenaroot; sva; sva = (SV*)SvANY(sva)) {
992 svend = &sva[SvREFCNT(sva)];
993 for (sv = sva + 1; sv < svend; ++sv) {
994 if (SvTYPE(sv) != SVTYPEMASK) {
995 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
997 " refcnt=%"UVuf pTHX__FORMAT "\n"
998 "\tallocated at %s:%d %s %s%s\n",
999 sv, sv->sv_flags, sv->sv_refcnt pTHX__VALUE,
1000 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1002 sv->sv_debug_inpad ? "for" : "by",
1003 sv->sv_debug_optype ?
1004 PL_op_name[sv->sv_debug_optype]: "(none)",
1005 sv->sv_debug_cloned ? " (cloned)" : ""
1007 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1008 Perl_dump_sv_child(aTHX_ sv);
1014 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1018 /* Wait for up to 4 seconds for child to terminate.
1019 This seems to be the least effort way of timing out on reaping
1021 struct timeval waitfor = {4, 0};
1022 int sock = PL_dumper_fd;
1026 FD_SET(sock, &rset);
1027 select(sock + 1, &rset, NULL, NULL, &waitfor);
1028 waitpid(child, &status, WNOHANG);
1036 #if defined(PERLIO_LAYERS)
1037 /* No more IO - including error messages ! */
1038 PerlIO_cleanup(aTHX);
1041 /* sv_undef needs to stay immortal until after PerlIO_cleanup
1042 as currently layers use it rather than Nullsv as a marker
1043 for no arg - and will try and SvREFCNT_dec it.
1045 SvREFCNT(&PL_sv_undef) = 0;
1046 SvREADONLY_off(&PL_sv_undef);
1048 Safefree(PL_origfilename);
1049 PL_origfilename = Nullch;
1050 Safefree(PL_reg_start_tmp);
1051 PL_reg_start_tmp = (char**)NULL;
1052 PL_reg_start_tmpl = 0;
1054 Safefree(PL_reg_curpm);
1055 Safefree(PL_reg_poscache);
1056 free_tied_hv_pool();
1057 Safefree(PL_op_mask);
1058 Safefree(PL_psig_ptr);
1059 PL_psig_ptr = (SV**)NULL;
1060 Safefree(PL_psig_name);
1061 PL_psig_name = (SV**)NULL;
1062 Safefree(PL_bitcount);
1063 PL_bitcount = Nullch;
1064 Safefree(PL_psig_pend);
1065 PL_psig_pend = (int*)NULL;
1066 PL_formfeed = Nullsv;
1068 PL_tainting = FALSE;
1069 PL_taint_warn = FALSE;
1070 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
1073 DEBUG_P(debprofdump());
1075 #ifdef USE_REENTRANT_API
1076 Perl_reentrant_free(aTHX);
1081 /* As the absolutely last thing, free the non-arena SV for mess() */
1084 /* we know that type == SVt_PVMG */
1086 /* it could have accumulated taint magic */
1089 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1090 moremagic = mg->mg_moremagic;
1091 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1093 Safefree(mg->mg_ptr);
1097 /* we know that type >= SVt_PV */
1098 SvPV_free(PL_mess_sv);
1099 Safefree(SvANY(PL_mess_sv));
1100 Safefree(PL_mess_sv);
1101 PL_mess_sv = Nullsv;
1103 return STATUS_NATIVE_EXPORT;
1107 =for apidoc perl_free
1109 Releases a Perl interpreter. See L<perlembed>.
1117 #if defined(WIN32) || defined(NETWARE)
1118 # if defined(PERL_IMPLICIT_SYS)
1120 void *host = nw_internal_host;
1122 void *host = w32_internal_host;
1124 PerlMem_free(aTHXx);
1126 nw_delete_internal_host(host);
1128 win32_delete_internal_host(host);
1131 PerlMem_free(aTHXx);
1134 PerlMem_free(aTHXx);
1138 #if defined(USE_5005THREADS) || defined(USE_ITHREADS)
1139 /* provide destructors to clean up the thread key when libperl is unloaded */
1140 #ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1142 #if defined(__hpux) && __ux_version > 1020 && !defined(__GNUC__)
1143 #pragma fini "perl_fini"
1147 #if defined(__GNUC__)
1148 __attribute__((destructor))
1158 #endif /* THREADS */
1161 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
1163 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1164 PL_exitlist[PL_exitlistlen].fn = fn;
1165 PL_exitlist[PL_exitlistlen].ptr = ptr;
1169 #ifdef HAS_PROCSELFEXE
1170 /* This is a function so that we don't hold on to MAXPATHLEN
1171 bytes of stack longer than necessary
1174 S_procself_val(pTHX_ SV *sv, const char *arg0)
1176 char buf[MAXPATHLEN];
1177 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1179 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1180 includes a spurious NUL which will cause $^X to fail in system
1181 or backticks (this will prevent extensions from being built and
1182 many tests from working). readlink is not meant to add a NUL.
1183 Normal readlink works fine.
1185 if (len > 0 && buf[len-1] == '\0') {
1189 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1190 returning the text "unknown" from the readlink rather than the path
1191 to the executable (or returning an error from the readlink). Any valid
1192 path has a '/' in it somewhere, so use that to validate the result.
1193 See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1195 if (len > 0 && memchr(buf, '/', len)) {
1196 sv_setpvn(sv,buf,len);
1202 #endif /* HAS_PROCSELFEXE */
1205 S_set_caret_X(pTHX) {
1206 GV* tmpgv = gv_fetchpv("\030",TRUE, SVt_PV); /* $^X */
1208 #ifdef HAS_PROCSELFEXE
1209 S_procself_val(aTHX_ GvSV(tmpgv), PL_origargv[0]);
1212 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
1214 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
1221 =for apidoc perl_parse
1223 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1229 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
1236 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
1239 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
1240 setuid perl scripts securely.\n");
1241 #endif /* IAMSUID */
1244 #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
1245 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
1246 * This MUST be done before any hash stores or fetches take place.
1247 * If you set PL_rehash_seed (and assumedly also PL_rehash_seed_set)
1248 * yourself, it is your responsibility to provide a good random seed!
1249 * You can also define PERL_HASH_SEED in compile time, see hv.h. */
1250 if (!PL_rehash_seed_set)
1251 PL_rehash_seed = get_hash_seed();
1253 const char *s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
1255 if (s && (atoi(s) == 1))
1256 PerlIO_printf(Perl_debug_log, "HASH_SEED = %"UVuf"\n", PL_rehash_seed);
1258 #endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1264 /* Set PL_origalen be the sum of the contiguous argv[]
1265 * elements plus the size of the env in case that it is
1266 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
1267 * as the maximum modifiable length of $0. In the worst case
1268 * the area we are able to modify is limited to the size of
1269 * the original argv[0]. (See below for 'contiguous', though.)
1271 const char *s = NULL;
1274 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
1275 /* Do the mask check only if the args seem like aligned. */
1277 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1279 /* See if all the arguments are contiguous in memory. Note
1280 * that 'contiguous' is a loose term because some platforms
1281 * align the argv[] and the envp[]. If the arguments look
1282 * like non-aligned, assume that they are 'strictly' or
1283 * 'traditionally' contiguous. If the arguments look like
1284 * aligned, we just check that they are within aligned
1285 * PTRSIZE bytes. As long as no system has something bizarre
1286 * like the argv[] interleaved with some other data, we are
1287 * fine. (Did I just evoke Murphy's Law?) --jhi */
1288 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1290 for (i = 1; i < PL_origargc; i++) {
1291 if ((PL_origargv[i] == s + 1
1293 || PL_origargv[i] == s + 2
1298 (PL_origargv[i] > s &&
1300 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1310 /* Can we grab env area too to be used as the area for $0? */
1311 if (PL_origenviron) {
1312 if ((PL_origenviron[0] == s + 1
1314 || (PL_origenviron[0] == s + 9 && (s += 8))
1319 (PL_origenviron[0] > s &&
1320 PL_origenviron[0] <=
1321 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1325 s = PL_origenviron[0];
1328 my_setenv("NoNe SuCh", Nullch);
1329 /* Force copy of environment. */
1330 for (i = 1; PL_origenviron[i]; i++) {
1331 if (PL_origenviron[i] == s + 1
1334 (PL_origenviron[i] > s &&
1335 PL_origenviron[i] <=
1336 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1339 s = PL_origenviron[i];
1347 PL_origalen = s - PL_origargv[0] + 1;
1352 /* Come here if running an undumped a.out. */
1354 PL_origfilename = savepv(argv[0]);
1355 PL_do_undump = FALSE;
1356 cxstack_ix = -1; /* start label stack again */
1358 assert (!PL_tainted);
1360 S_set_caret_X(aTHX);
1362 init_postdump_symbols(argc,argv,env);
1367 op_free(PL_main_root);
1368 PL_main_root = Nullop;
1370 PL_main_start = Nullop;
1371 SvREFCNT_dec(PL_main_cv);
1372 PL_main_cv = Nullcv;
1375 oldscope = PL_scopestack_ix;
1376 PL_dowarn = G_WARN_OFF;
1381 parse_body(env,xsinit);
1383 call_list(oldscope, PL_checkav);
1390 /* my_exit() was called */
1391 while (PL_scopestack_ix > oldscope)
1394 PL_curstash = PL_defstash;
1396 call_list(oldscope, PL_checkav);
1397 ret = STATUS_NATIVE_EXPORT;
1400 PerlIO_printf(Perl_error_log, "panic: top_env\n");
1409 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
1412 int argc = PL_origargc;
1413 char **argv = PL_origargv;
1414 const char *scriptname = NULL;
1415 VOL bool dosearch = FALSE;
1416 const char *validarg = "";
1419 const char *cddir = Nullch;
1420 #ifdef USE_SITECUSTOMIZE
1421 bool minus_f = FALSE;
1426 sv_setpvn(PL_linestr,"",0);
1427 sv = newSVpvn("",0); /* first used for -I flags */
1431 for (argc--,argv++; argc > 0; argc--,argv++) {
1432 if (argv[0][0] != '-' || !argv[0][1])
1436 validarg = " PHOOEY ";
1440 * Can we rely on the kernel to start scripts with argv[1] set to
1441 * contain all #! line switches (the whole line)? (argv[0] is set to
1442 * the interpreter name, argv[2] to the script name; argv[3] and
1443 * above may contain other arguments.)
1450 #ifndef PERL_STRICT_CR
1475 if ((s = moreswitches(s)))
1480 CHECK_MALLOC_TOO_LATE_FOR('t');
1481 if( !PL_tainting ) {
1482 PL_taint_warn = TRUE;
1488 CHECK_MALLOC_TOO_LATE_FOR('T');
1490 PL_taint_warn = FALSE;
1495 #ifdef MACOS_TRADITIONAL
1496 /* ignore -e for Dev:Pseudo argument */
1497 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
1502 PL_e_script = newSVpvn("",0);
1503 filter_add(read_e_script, NULL);
1506 sv_catpv(PL_e_script, s);
1508 sv_catpv(PL_e_script, argv[1]);
1512 Perl_croak(aTHX_ "No code specified for -e");
1513 sv_catpv(PL_e_script, "\n");
1517 #ifdef USE_SITECUSTOMIZE
1523 case 'I': /* -I handled both here and in moreswitches() */
1525 if (!*++s && (s=argv[1]) != Nullch) {
1530 STRLEN len = strlen(s);
1531 p = savepvn(s, len);
1532 incpush(p, TRUE, TRUE, FALSE, FALSE);
1533 sv_catpvn(sv, "-I", 2);
1534 sv_catpvn(sv, p, len);
1535 sv_catpvn(sv, " ", 1);
1539 Perl_croak(aTHX_ "No directory specified for -I");
1543 PL_preprocess = TRUE;
1553 PL_preambleav = newAV();
1554 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
1558 PL_Sv = newSVpv("print myconfig();",0);
1560 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
1562 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
1564 opts = SvCUR(PL_Sv);
1566 sv_catpv(PL_Sv,"\" Compile-time options:");
1568 sv_catpv(PL_Sv," DEBUGGING");
1570 # ifdef MULTIPLICITY
1571 sv_catpv(PL_Sv," MULTIPLICITY");
1573 # ifdef USE_5005THREADS
1574 sv_catpv(PL_Sv," USE_5005THREADS");
1576 # ifdef USE_ITHREADS
1577 sv_catpv(PL_Sv," USE_ITHREADS");
1579 # ifdef USE_64_BIT_INT
1580 sv_catpv(PL_Sv," USE_64_BIT_INT");
1582 # ifdef USE_64_BIT_ALL
1583 sv_catpv(PL_Sv," USE_64_BIT_ALL");
1585 # ifdef USE_LONG_DOUBLE
1586 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1588 # ifdef USE_LARGE_FILES
1589 sv_catpv(PL_Sv," USE_LARGE_FILES");
1592 sv_catpv(PL_Sv," USE_SOCKS");
1594 # ifdef USE_SITECUSTOMIZE
1595 sv_catpv(PL_Sv," USE_SITECUSTOMIZE");
1597 # ifdef PERL_IMPLICIT_CONTEXT
1598 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1600 # ifdef PERL_IMPLICIT_SYS
1601 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1604 while (SvCUR(PL_Sv) > opts+76) {
1605 /* find last space after "options: " and before col 76 */
1608 char *pv = SvPV_nolen(PL_Sv);
1609 const char c = pv[opts+76];
1611 space = strrchr(pv+opts+26, ' ');
1613 if (!space) break; /* "Can't happen" */
1615 /* break the line before that space */
1618 sv_insert(PL_Sv, opts, 0,
1622 sv_catpv(PL_Sv,"\\n\",");
1624 #if defined(LOCAL_PATCH_COUNT)
1625 if (LOCAL_PATCH_COUNT > 0) {
1627 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
1628 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1629 if (PL_localpatches[i])
1630 Perl_sv_catpvf(aTHX_ PL_Sv,"q%c\t%s\n%c,",
1631 0, PL_localpatches[i], 0);
1635 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
1638 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
1640 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
1643 sv_catpv(PL_Sv, "; \
1645 @env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; ");
1648 push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
1651 print \" \\%ENV:\\n @env\\n\" if @env; \
1652 print \" \\@INC:\\n @INC\\n\";");
1655 PL_Sv = newSVpv("config_vars(qw(",0);
1656 sv_catpv(PL_Sv, ++s);
1657 sv_catpv(PL_Sv, "))");
1660 av_push(PL_preambleav, PL_Sv);
1661 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1664 PL_doextract = TRUE;
1672 if (!*++s || isSPACE(*s)) {
1676 /* catch use of gnu style long options */
1677 if (strEQ(s, "version")) {
1681 if (strEQ(s, "help")) {
1688 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1694 #ifndef SECURE_INTERNAL_GETENV
1697 (s = PerlEnv_getenv("PERL5OPT")))
1699 const char *popt = s;
1702 if (*s == '-' && *(s+1) == 'T') {
1703 CHECK_MALLOC_TOO_LATE_FOR('T');
1705 PL_taint_warn = FALSE;
1708 char *popt_copy = Nullch;
1721 if (!strchr("DIMUdmtwA", *s))
1722 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
1726 popt_copy = SvPVX(sv_2mortal(newSVpv(popt,0)));
1727 s = popt_copy + (s - popt);
1728 d = popt_copy + (d - popt);
1735 if( !PL_tainting ) {
1736 PL_taint_warn = TRUE;
1746 #ifdef USE_SITECUSTOMIZE
1749 PL_preambleav = newAV();
1750 av_unshift(PL_preambleav, 1);
1751 (void)av_store(PL_preambleav, 0, Perl_newSVpvf(aTHX_ "BEGIN { do '%s/sitecustomize.pl' }", SITELIB_EXP));
1755 if (PL_taint_warn && PL_dowarn != G_WARN_ALL_OFF) {
1756 PL_compiling.cop_warnings = newSVpvn(WARN_TAINTstring, WARNsize);
1760 scriptname = argv[0];
1763 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1765 else if (scriptname == Nullch) {
1767 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1773 /* Set $^X early so that it can be used for relocatable paths in @INC */
1774 assert (!PL_tainted);
1776 S_set_caret_X(aTHX);
1780 open_script(scriptname,dosearch,sv);
1782 validate_suid(validarg, scriptname);
1785 #if defined(SIGCHLD) || defined(SIGCLD)
1788 # define SIGCHLD SIGCLD
1790 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1791 if (sigstate == SIG_IGN) {
1792 if (ckWARN(WARN_SIGNAL))
1793 Perl_warner(aTHX_ packWARN(WARN_SIGNAL),
1794 "Can't ignore signal CHLD, forcing to default");
1795 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1801 #ifdef MACOS_TRADITIONAL
1802 if (PL_doextract || gMacPerl_AlwaysExtract) {
1807 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
1808 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1812 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1813 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1814 CvUNIQUE_on(PL_compcv);
1816 CvPADLIST(PL_compcv) = pad_new(0);
1817 #ifdef USE_5005THREADS
1818 CvOWNER(PL_compcv) = 0;
1819 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1820 MUTEX_INIT(CvMUTEXP(PL_compcv));
1821 #endif /* USE_5005THREADS */
1824 boot_core_UNIVERSAL();
1825 boot_core_xsutils();
1828 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
1830 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
1836 # ifdef HAS_SOCKS5_INIT
1837 socks5_init(argv[0]);
1843 init_predump_symbols();
1844 /* init_postdump_symbols not currently designed to be called */
1845 /* more than once (ENV isn't cleared first, for example) */
1846 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
1848 init_postdump_symbols(argc,argv,env);
1850 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
1851 * or explicitly in some platforms.
1852 * locale.c:Perl_init_i18nl10n() if the environment
1853 * look like the user wants to use UTF-8. */
1854 #if defined(SYMBIAN)
1855 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
1858 /* Requires init_predump_symbols(). */
1859 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
1864 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
1865 * and the default open disciplines. */
1866 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
1867 PL_stdingv && (io = GvIO(PL_stdingv)) &&
1869 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
1870 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
1871 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
1873 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
1874 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
1875 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
1877 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
1878 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
1879 (sv = GvSV(gv_fetchpv("\017PEN", TRUE, SVt_PV)))) {
1880 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
1881 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
1884 sv_setpvn(sv, ":utf8\0:utf8", 11);
1886 sv_setpvn(sv, ":utf8\0", 6);
1889 sv_setpvn(sv, "\0:utf8", 6);
1895 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
1896 if (strEQ(s, "unsafe"))
1897 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
1898 else if (strEQ(s, "safe"))
1899 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
1901 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
1906 /* now parse the script */
1908 SETERRNO(0,SS_NORMAL);
1910 #ifdef MACOS_TRADITIONAL
1911 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1913 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1915 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1916 MacPerl_MPWFileName(PL_origfilename));
1920 if (yyparse() || PL_error_count) {
1922 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
1924 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1929 CopLINE_set(PL_curcop, 0);
1930 PL_curstash = PL_defstash;
1931 PL_preprocess = FALSE;
1933 SvREFCNT_dec(PL_e_script);
1934 PL_e_script = Nullsv;
1941 SAVECOPFILE(PL_curcop);
1942 SAVECOPLINE(PL_curcop);
1943 gv_check(PL_defstash);
1950 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1951 dump_mstats("after compilation:");
1960 =for apidoc perl_run
1962 Tells a Perl interpreter to run. See L<perlembed>.
1974 oldscope = PL_scopestack_ix;
1982 cxstack_ix = -1; /* start context stack again */
1984 case 0: /* normal completion */
1988 case 2: /* my_exit() */
1989 while (PL_scopestack_ix > oldscope)
1992 PL_curstash = PL_defstash;
1993 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
1994 PL_endav && !PL_minus_c)
1995 call_list(oldscope, PL_endav);
1997 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1998 dump_mstats("after execution: ");
2000 ret = STATUS_NATIVE_EXPORT;
2004 POPSTACK_TO(PL_mainstack);
2007 PerlIO_printf(Perl_error_log, "panic: restartop\n");
2019 S_run_body(pTHX_ I32 oldscope)
2021 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
2022 PL_sawampersand ? "Enabling" : "Omitting"));
2024 if (!PL_restartop) {
2025 DEBUG_x(dump_all());
2027 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
2028 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
2032 #ifdef MACOS_TRADITIONAL
2033 PerlIO_printf(Perl_error_log, "%s%s syntax OK\n",
2034 (gMacPerl_ErrorFormat ? "# " : ""),
2035 MacPerl_MPWFileName(PL_origfilename));
2037 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
2041 if (PERLDB_SINGLE && PL_DBsingle)
2042 sv_setiv(PL_DBsingle, 1);
2044 call_list(oldscope, PL_initav);
2050 PL_op = PL_restartop;
2054 else if (PL_main_start) {
2055 CvDEPTH(PL_main_cv) = 1;
2056 PL_op = PL_main_start;
2064 =head1 SV Manipulation Functions
2066 =for apidoc p||get_sv
2068 Returns the SV of the specified Perl scalar. If C<create> is set and the
2069 Perl variable does not exist then it will be created. If C<create> is not
2070 set and the variable does not exist then NULL is returned.
2076 Perl_get_sv(pTHX_ const char *name, I32 create)
2079 #ifdef USE_5005THREADS
2080 if (name[1] == '\0' && !isALPHA(name[0])) {
2081 PADOFFSET tmp = find_threadsv(name);
2082 if (tmp != NOT_IN_PAD)
2083 return THREADSV(tmp);
2085 #endif /* USE_5005THREADS */
2086 gv = gv_fetchpv(name, create, SVt_PV);
2093 =head1 Array Manipulation Functions
2095 =for apidoc p||get_av
2097 Returns the AV of the specified Perl array. If C<create> is set and the
2098 Perl variable does not exist then it will be created. If C<create> is not
2099 set and the variable does not exist then NULL is returned.
2105 Perl_get_av(pTHX_ const char *name, I32 create)
2107 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
2116 =head1 Hash Manipulation Functions
2118 =for apidoc p||get_hv
2120 Returns the HV of the specified Perl hash. If C<create> is set and the
2121 Perl variable does not exist then it will be created. If C<create> is not
2122 set and the variable does not exist then NULL is returned.
2128 Perl_get_hv(pTHX_ const char *name, I32 create)
2130 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
2139 =head1 CV Manipulation Functions
2141 =for apidoc p||get_cv
2143 Returns the CV of the specified Perl subroutine. If C<create> is set and
2144 the Perl subroutine does not exist then it will be declared (which has the
2145 same effect as saying C<sub name;>). If C<create> is not set and the
2146 subroutine does not exist then NULL is returned.
2152 Perl_get_cv(pTHX_ const char *name, I32 create)
2154 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
2155 /* XXX unsafe for threads if eval_owner isn't held */
2156 /* XXX this is probably not what they think they're getting.
2157 * It has the same effect as "sub name;", i.e. just a forward
2159 if (create && !GvCVu(gv))
2160 return newSUB(start_subparse(FALSE, 0),
2161 newSVOP(OP_CONST, 0, newSVpv(name,0)),
2169 /* Be sure to refetch the stack pointer after calling these routines. */
2173 =head1 Callback Functions
2175 =for apidoc p||call_argv
2177 Performs a callback to the specified Perl sub. See L<perlcall>.
2183 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
2185 /* See G_* flags in cop.h */
2186 /* null terminated arg list */
2193 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
2198 return call_pv(sub_name, flags);
2202 =for apidoc p||call_pv
2204 Performs a callback to the specified Perl sub. See L<perlcall>.
2210 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
2211 /* name of the subroutine */
2212 /* See G_* flags in cop.h */
2214 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
2218 =for apidoc p||call_method
2220 Performs a callback to the specified Perl method. The blessed object must
2221 be on the stack. See L<perlcall>.
2227 Perl_call_method(pTHX_ const char *methname, I32 flags)
2228 /* name of the subroutine */
2229 /* See G_* flags in cop.h */
2231 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
2234 /* May be called with any of a CV, a GV, or an SV containing the name. */
2236 =for apidoc p||call_sv
2238 Performs a callback to the Perl sub whose name is in the SV. See
2245 Perl_call_sv(pTHX_ SV *sv, I32 flags)
2246 /* See G_* flags in cop.h */
2249 LOGOP myop; /* fake syntax tree node */
2252 volatile I32 retval = 0;
2254 bool oldcatch = CATCH_GET;
2259 if (flags & G_DISCARD) {
2264 Zero(&myop, 1, LOGOP);
2265 myop.op_next = Nullop;
2266 if (!(flags & G_NOARGS))
2267 myop.op_flags |= OPf_STACKED;
2268 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
2269 (flags & G_ARRAY) ? OPf_WANT_LIST :
2274 EXTEND(PL_stack_sp, 1);
2275 *++PL_stack_sp = sv;
2277 oldscope = PL_scopestack_ix;
2279 if (PERLDB_SUB && PL_curstash != PL_debstash
2280 /* Handle first BEGIN of -d. */
2281 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
2282 /* Try harder, since this may have been a sighandler, thus
2283 * curstash may be meaningless. */
2284 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
2285 && !(flags & G_NODEBUG))
2286 PL_op->op_private |= OPpENTERSUB_DB;
2288 if (flags & G_METHOD) {
2289 Zero(&method_op, 1, UNOP);
2290 method_op.op_next = PL_op;
2291 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2292 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
2293 PL_op = (OP*)&method_op;
2296 if (!(flags & G_EVAL)) {
2298 call_body((OP*)&myop, FALSE);
2299 retval = PL_stack_sp - (PL_stack_base + oldmark);
2300 CATCH_SET(oldcatch);
2303 myop.op_other = (OP*)&myop;
2305 /* we're trying to emulate pp_entertry() here */
2307 register PERL_CONTEXT *cx;
2308 const I32 gimme = GIMME_V;
2313 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
2315 PL_eval_root = PL_op; /* Only needed so that goto works right. */
2317 PL_in_eval = EVAL_INEVAL;
2318 if (flags & G_KEEPERR)
2319 PL_in_eval |= EVAL_KEEPERR;
2321 sv_setpvn(ERRSV,"",0);
2329 call_body((OP*)&myop, FALSE);
2330 retval = PL_stack_sp - (PL_stack_base + oldmark);
2331 if (!(flags & G_KEEPERR))
2332 sv_setpvn(ERRSV,"",0);
2338 /* my_exit() was called */
2339 PL_curstash = PL_defstash;
2342 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
2343 Perl_croak(aTHX_ "Callback called exit");
2348 PL_op = PL_restartop;
2352 PL_stack_sp = PL_stack_base + oldmark;
2353 if (flags & G_ARRAY)
2357 *++PL_stack_sp = &PL_sv_undef;
2362 if (PL_scopestack_ix > oldscope) {
2366 register PERL_CONTEXT *cx;
2377 if (flags & G_DISCARD) {
2378 PL_stack_sp = PL_stack_base + oldmark;
2388 S_call_body(pTHX_ const OP *myop, bool is_eval)
2390 if (PL_op == myop) {
2392 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
2394 PL_op = Perl_pp_entersub(aTHX); /* this does */
2400 /* Eval a string. The G_EVAL flag is always assumed. */
2403 =for apidoc p||eval_sv
2405 Tells Perl to C<eval> the string in the SV.
2411 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
2413 /* See G_* flags in cop.h */
2416 UNOP myop; /* fake syntax tree node */
2417 volatile I32 oldmark = SP - PL_stack_base;
2418 volatile I32 retval = 0;
2423 if (flags & G_DISCARD) {
2430 Zero(PL_op, 1, UNOP);
2431 EXTEND(PL_stack_sp, 1);
2432 *++PL_stack_sp = sv;
2434 if (!(flags & G_NOARGS))
2435 myop.op_flags = OPf_STACKED;
2436 myop.op_next = Nullop;
2437 myop.op_type = OP_ENTEREVAL;
2438 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
2439 (flags & G_ARRAY) ? OPf_WANT_LIST :
2441 if (flags & G_KEEPERR)
2442 myop.op_flags |= OPf_SPECIAL;
2444 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2445 * before a PUSHEVAL, which corrupts the stack after a croak */
2446 TAINT_PROPER("eval_sv()");
2452 call_body((OP*)&myop,TRUE);
2453 retval = PL_stack_sp - (PL_stack_base + oldmark);
2454 if (!(flags & G_KEEPERR))
2455 sv_setpvn(ERRSV,"",0);
2461 /* my_exit() was called */
2462 PL_curstash = PL_defstash;
2465 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
2466 Perl_croak(aTHX_ "Callback called exit");
2471 PL_op = PL_restartop;
2475 PL_stack_sp = PL_stack_base + oldmark;
2476 if (flags & G_ARRAY)
2480 *++PL_stack_sp = &PL_sv_undef;
2486 if (flags & G_DISCARD) {
2487 PL_stack_sp = PL_stack_base + oldmark;
2497 =for apidoc p||eval_pv
2499 Tells Perl to C<eval> the given string and return an SV* result.
2505 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
2508 SV* sv = newSVpv(p, 0);
2510 eval_sv(sv, G_SCALAR);
2517 if (croak_on_error && SvTRUE(ERRSV)) {
2518 Perl_croak(aTHX_ SvPVx_nolen_const(ERRSV));
2524 /* Require a module. */
2527 =head1 Embedding Functions
2529 =for apidoc p||require_pv
2531 Tells Perl to C<require> the file named by the string argument. It is
2532 analogous to the Perl code C<eval "require '$file'">. It's even
2533 implemented that way; consider using load_module instead.
2538 Perl_require_pv(pTHX_ const char *pv)
2542 PUSHSTACKi(PERLSI_REQUIRE);
2544 sv = sv_newmortal();
2545 sv_setpv(sv, "require '");
2548 eval_sv(sv, G_DISCARD);
2554 Perl_magicname(pTHX_ const char *sym, const char *name, I32 namlen)
2558 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
2559 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
2563 S_usage(pTHX_ const char *name) /* XXX move this out into a module ? */
2565 /* This message really ought to be max 23 lines.
2566 * Removed -h because the user already knows that option. Others? */
2568 static const char * const usage_msg[] = {
2569 "-0[octal] specify record separator (\\0, if no argument)",
2570 "-A[mod][=pattern] activate all/given assertions",
2571 "-a autosplit mode with -n or -p (splits $_ into @F)",
2572 "-C[number/list] enables the listed Unicode features",
2573 "-c check syntax only (runs BEGIN and CHECK blocks)",
2574 "-d[:debugger] run program under debugger",
2575 "-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2576 "-e program one line of program (several -e's allowed, omit programfile)",
2577 "-f don't do $sitelib/sitecustomize.pl at startup",
2578 "-F/pattern/ split() pattern for -a switch (//'s are optional)",
2579 "-i[extension] edit <> files in place (makes backup if extension supplied)",
2580 "-Idirectory specify @INC/#include directory (several -I's allowed)",
2581 "-l[octal] enable line ending processing, specifies line terminator",
2582 "-[mM][-]module execute \"use/no module...\" before executing program",
2583 "-n assume \"while (<>) { ... }\" loop around program",
2584 "-p assume loop like -n but print line also, like sed",
2585 "-P run program through C preprocessor before compilation",
2586 "-s enable rudimentary parsing for switches after programfile",
2587 "-S look for programfile using PATH environment variable",
2588 "-t enable tainting warnings",
2589 "-T enable tainting checks",
2590 "-u dump core after parsing program",
2591 "-U allow unsafe operations",
2592 "-v print version, subversion (includes VERY IMPORTANT perl info)",
2593 "-V[:variable] print configuration summary (or a single Config.pm variable)",
2594 "-w enable many useful warnings (RECOMMENDED)",
2595 "-W enable all warnings",
2596 "-x[directory] strip off text before #!perl line and perhaps cd to directory",
2597 "-X disable all warnings",
2601 const char * const *p = usage_msg;
2603 PerlIO_printf(PerlIO_stdout(),
2604 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2607 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
2610 /* convert a string of -D options (or digits) into an int.
2611 * sets *s to point to the char after the options */
2615 Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
2617 static const char * const usage_msgd[] = {
2618 " Debugging flag values: (see also -d)",
2619 " p Tokenizing and parsing (with v, displays parse stack)",
2620 " s Stack snapshots (with v, displays all stacks)",
2621 " l Context (loop) stack processing",
2622 " t Trace execution",
2623 " o Method and overloading resolution",
2624 " c String/numeric conversions",
2625 " P Print profiling info, preprocessor command for -P, source file input state",
2626 " m Memory allocation",
2627 " f Format processing",
2628 " r Regular expression parsing and execution",
2629 " x Syntax tree dump",
2630 " u Tainting checks",
2631 " H Hash dump -- usurps values()",
2632 " X Scratchpad allocation",
2634 " S Thread synchronization",
2636 " R Include reference counts of dumped variables (eg when using -Ds)",
2637 " J Do not s,t,P-debug (Jump over) opcodes within package DB",
2638 " v Verbose: use in conjunction with other flags",
2640 " A Consistency checks on internal structures",
2641 " q quiet - currently only suppresses the 'EXECUTING' message",
2646 /* if adding extra options, remember to update DEBUG_MASK */
2647 static const char debopts[] = "psltocPmfrxu HXDSTRJvCAq";
2649 for (; isALNUM(**s); (*s)++) {
2650 const char *d = strchr(debopts,**s);
2652 i |= 1 << (d - debopts);
2653 else if (ckWARN_d(WARN_DEBUGGING))
2654 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2655 "invalid option -D%c, use -D'' to see choices\n", **s);
2658 else if (isDIGIT(**s)) {
2660 for (; isALNUM(**s); (*s)++) ;
2662 else if (givehelp) {
2663 char **p = (char **)usage_msgd;
2664 while (*p) PerlIO_printf(PerlIO_stdout(), "%s\n", *p++);
2667 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
2668 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2669 "-Dp not implemented on this platform\n");
2675 /* This routine handles any switches that can be given during run */
2678 Perl_moreswitches(pTHX_ char *s)
2689 SvREFCNT_dec(PL_rs);
2690 if (s[1] == 'x' && s[2]) {
2691 const char *e = s+=2;
2697 flags = PERL_SCAN_SILENT_ILLDIGIT;
2698 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
2699 if (s + numlen < e) {
2700 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
2704 PL_rs = newSVpvn("", 0);
2705 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
2706 tmps = (U8*)SvPVX(PL_rs);
2707 uvchr_to_utf8(tmps, rschar);
2708 SvCUR_set(PL_rs, UNISKIP(rschar));
2713 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
2714 if (rschar & ~((U8)~0))
2715 PL_rs = &PL_sv_undef;
2716 else if (!rschar && numlen >= 2)
2717 PL_rs = newSVpvn("", 0);
2719 char ch = (char)rschar;
2720 PL_rs = newSVpvn(&ch, 1);
2723 sv_setsv(get_sv("/", TRUE), PL_rs);
2728 PL_unicode = parse_unicode_opts( (const char **)&s );
2733 while (*s && !isSPACE(*s)) ++s;
2735 PL_splitstr = savepv(PL_splitstr);
2749 /* -dt indicates to the debugger that threads will be used */
2750 if (*s == 't' && !isALNUM(s[1])) {
2752 my_setenv("PERL5DB_THREADED", "1");
2755 /* The following permits -d:Mod to accepts arguments following an =
2756 in the fashion that -MSome::Mod does. */
2757 if (*s == ':' || *s == '=') {
2760 sv = newSVpv("use Devel::", 0);
2762 /* We now allow -d:Module=Foo,Bar */
2763 while(isALNUM(*s) || *s==':') ++s;
2765 sv_catpv(sv, start);
2767 sv_catpvn(sv, start, s-start);
2768 sv_catpv(sv, " split(/,/,q{");
2773 my_setenv("PERL5DB", SvPV(sv, PL_na));
2776 PL_perldb = PERLDB_ALL;
2785 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
2786 #else /* !DEBUGGING */
2787 if (ckWARN_d(WARN_DEBUGGING))
2788 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2789 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
2790 for (s++; isALNUM(*s); s++) ;
2795 usage(PL_origargv[0]);
2799 Safefree(PL_inplace);
2800 #if defined(__CYGWIN__) /* do backup extension automagically */
2801 if (*(s+1) == '\0') {
2802 PL_inplace = savepv(".bak");
2805 #endif /* __CYGWIN__ */
2806 PL_inplace = savepv(s+1);
2807 for (s = PL_inplace; *s && !isSPACE(*s); s++)
2811 if (*s == '-') /* Additional switches on #! line. */
2815 case 'I': /* -I handled both here and in parse_body() */
2818 while (*s && isSPACE(*s))
2823 /* ignore trailing spaces (possibly followed by other switches) */
2825 for (e = p; *e && !isSPACE(*e); e++) ;
2829 } while (*p && *p != '-');
2830 e = savepvn(s, e-s);
2831 incpush(e, TRUE, TRUE, FALSE, FALSE);
2838 Perl_croak(aTHX_ "No directory specified for -I");
2844 SvREFCNT_dec(PL_ors_sv);
2850 PL_ors_sv = newSVpvn("\n",1);
2851 numlen = 3 + (*s == '0');
2852 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
2856 if (RsPARA(PL_rs)) {
2857 PL_ors_sv = newSVpvn("\n\n",2);
2860 PL_ors_sv = newSVsv(PL_rs);
2867 PL_preambleav = newAV();
2871 SV *sv = newSVpv("use assertions::activate", 24);
2872 while(isALNUM(*s) || *s == ':') ++s;
2874 sv_catpvn(sv, "::", 2);
2875 sv_catpvn(sv, start, s-start);
2878 sv_catpvn(sv, " split(/,/,q\0", 13);
2880 sv_catpvn(sv, "\0)", 2);
2883 else if (*s != '\0') {
2884 Perl_croak(aTHX_ "Can't use '%c' after -A%.*s", *s, s-start, start);
2886 av_push(PL_preambleav, sv);
2890 forbid_setid("-M"); /* XXX ? */
2893 forbid_setid("-m"); /* XXX ? */
2897 const char *use = "use ";
2898 /* -M-foo == 'no foo' */
2899 if (*s == '-') { use = "no "; ++s; }
2900 sv = newSVpv(use,0);
2902 /* We allow -M'Module qw(Foo Bar)' */
2903 while(isALNUM(*s) || *s==':') ++s;
2905 sv_catpv(sv, start);
2906 if (*(start-1) == 'm') {
2908 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
2909 sv_catpv( sv, " ()");
2913 Perl_croak(aTHX_ "Module name required with -%c option",
2915 sv_catpvn(sv, start, s-start);
2916 sv_catpv(sv, " split(/,/,q");
2917 sv_catpvn(sv, "\0)", 1); /* Use NUL as q//-delimiter. */
2919 sv_catpvn(sv, "\0)", 2);
2923 PL_preambleav = newAV();
2924 av_push(PL_preambleav, sv);
2927 Perl_croak(aTHX_ "Missing argument to -%c", *(s-1));
2939 PL_doswitches = TRUE;
2953 #ifdef MACOS_TRADITIONAL
2954 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2956 PL_do_undump = TRUE;
2964 if (!sv_derived_from(PL_patchlevel, "version"))
2965 (void *)upg_version(PL_patchlevel);
2967 PerlIO_printf(PerlIO_stdout(),
2968 Perl_form(aTHX_ "\nThis is perl, %"SVf" built for %s",
2969 vstringify(PL_patchlevel),
2972 /* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
2973 PerlIO_printf(PerlIO_stdout(),
2974 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
2975 vstringify(PL_patchlevel)));
2976 PerlIO_printf(PerlIO_stdout(),
2977 Perl_form(aTHX_ " built under %s at %s %s\n",
2978 OSNAME, __DATE__, __TIME__));
2979 PerlIO_printf(PerlIO_stdout(),
2980 Perl_form(aTHX_ " OS Specific Release: %s\n",
2984 #if defined(LOCAL_PATCH_COUNT)
2985 if (LOCAL_PATCH_COUNT > 0)
2986 PerlIO_printf(PerlIO_stdout(),
2987 "\n(with %d registered patch%s, "
2988 "see perl -V for more detail)",
2989 (int)LOCAL_PATCH_COUNT,
2990 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
2993 PerlIO_printf(PerlIO_stdout(),
2994 "\n\nCopyright 1987-2005, Larry Wall\n");
2995 #ifdef MACOS_TRADITIONAL
2996 PerlIO_printf(PerlIO_stdout(),
2997 "\nMac OS port Copyright 1991-2002, Matthias Neeracher;\n"
2998 "maintained by Chris Nandor\n");
3001 PerlIO_printf(PerlIO_stdout(),
3002 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
3005 PerlIO_printf(PerlIO_stdout(),
3006 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3007 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
3010 PerlIO_printf(PerlIO_stdout(),
3011 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
3012 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
3015 PerlIO_printf(PerlIO_stdout(),
3016 "atariST series port, ++jrb bammi@cadence.com\n");
3019 PerlIO_printf(PerlIO_stdout(),
3020 "BeOS port Copyright Tom Spindler, 1997-1999\n");
3023 PerlIO_printf(PerlIO_stdout(),
3024 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n");
3027 PerlIO_printf(PerlIO_stdout(),
3028 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
3031 PerlIO_printf(PerlIO_stdout(),
3032 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
3035 PerlIO_printf(PerlIO_stdout(),
3036 "VM/ESA port by Neale Ferguson, 1998-1999\n");
3039 PerlIO_printf(PerlIO_stdout(),
3040 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
3043 PerlIO_printf(PerlIO_stdout(),
3044 "MiNT port by Guido Flohr, 1997-1999\n");
3047 PerlIO_printf(PerlIO_stdout(),
3048 "EPOC port by Olaf Flebbe, 1999-2002\n");
3051 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
3052 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
3056 PerlIO_printf(PerlIO_stdout(),
3057 "Symbian port by Nokia, 2004-2005\n");
3059 #ifdef BINARY_BUILD_NOTICE
3060 BINARY_BUILD_NOTICE;
3062 PerlIO_printf(PerlIO_stdout(),
3064 Perl may be copied only under the terms of either the Artistic License or the\n\
3065 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
3066 Complete documentation for Perl, including FAQ lists, should be found on\n\
3067 this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
3068 Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
3071 if (! (PL_dowarn & G_WARN_ALL_MASK))
3072 PL_dowarn |= G_WARN_ON;
3076 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
3077 if (!specialWARN(PL_compiling.cop_warnings))
3078 SvREFCNT_dec(PL_compiling.cop_warnings);
3079 PL_compiling.cop_warnings = pWARN_ALL ;
3083 PL_dowarn = G_WARN_ALL_OFF;
3084 if (!specialWARN(PL_compiling.cop_warnings))
3085 SvREFCNT_dec(PL_compiling.cop_warnings);
3086 PL_compiling.cop_warnings = pWARN_NONE ;
3091 if (s[1] == '-') /* Additional switches on #! line. */
3096 #if defined(WIN32) || !defined(PERL_STRICT_CR)
3102 #ifdef ALTERNATE_SHEBANG
3103 case 'S': /* OS/2 needs -S on "extproc" line. */
3111 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
3116 /* compliments of Tom Christiansen */
3118 /* unexec() can be found in the Gnu emacs distribution */
3119 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
3122 Perl_my_unexec(pTHX)
3130 prog = newSVpv(BIN_EXP, 0);
3131 sv_catpv(prog, "/perl");
3132 file = newSVpv(PL_origfilename, 0);
3133 sv_catpv(file, ".perldump");
3135 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3136 /* unexec prints msg to stderr in case of failure */
3137 PerlProc_exit(status);
3140 # include <lib$routines.h>
3141 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
3143 ABORT(); /* for use with undump */
3148 /* initialize curinterp */
3154 # define PERLVAR(var,type)
3155 # define PERLVARA(var,n,type)
3156 # if defined(PERL_IMPLICIT_CONTEXT)
3157 # if defined(USE_5005THREADS)
3158 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
3159 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
3160 # else /* !USE_5005THREADS */
3161 # define PERLVARI(var,type,init) aTHX->var = init;
3162 # define PERLVARIC(var,type,init) aTHX->var = init;
3163 # endif /* USE_5005THREADS */
3165 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
3166 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
3168 # include "intrpvar.h"
3169 # ifndef USE_5005THREADS
3170 # include "thrdvar.h"
3177 # define PERLVAR(var,type)
3178 # define PERLVARA(var,n,type)
3179 # define PERLVARI(var,type,init) PL_##var = init;
3180 # define PERLVARIC(var,type,init) PL_##var = init;
3181 # include "intrpvar.h"
3182 # ifndef USE_5005THREADS
3183 # include "thrdvar.h"
3194 S_init_main_stash(pTHX)
3198 PL_curstash = PL_defstash = newHV();
3199 PL_curstname = newSVpvn("main",4);
3200 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
3201 SvREFCNT_dec(GvHV(gv));
3202 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
3204 Perl_hv_name_set(aTHX_ PL_defstash, "main", 4, 0);
3205 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
3206 GvMULTI_on(PL_incgv);
3207 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
3208 GvMULTI_on(PL_hintgv);
3209 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
3210 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
3211 GvMULTI_on(PL_errgv);
3212 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
3213 GvMULTI_on(PL_replgv);
3214 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
3215 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
3216 sv_setpvn(ERRSV, "", 0);
3217 PL_curstash = PL_defstash;
3218 CopSTASH_set(&PL_compiling, PL_defstash);
3219 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
3220 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
3221 /* We must init $/ before switches are processed. */
3222 sv_setpvn(get_sv("/", TRUE), "\n", 1);
3225 /* PSz 18 Nov 03 fdscript now global but do not change prototype */
3227 S_open_script(pTHX_ const char *scriptname, bool dosearch, SV *sv)
3232 const char *cpp_discard_flag;
3241 PL_origfilename = savepvn("-e", 2);
3244 /* if find_script() returns, it returns a malloc()-ed value */
3245 scriptname = PL_origfilename = find_script(scriptname, dosearch, NULL, 1);
3247 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
3248 const char *s = scriptname + 8;
3249 PL_fdscript = atoi(s);
3254 * Tell apart "normal" usage of fdscript, e.g.
3255 * with bash on FreeBSD:
3256 * perl <( echo '#!perl -DA'; echo 'print "$0\n"')
3257 * from usage in suidperl.
3258 * Does any "normal" usage leave garbage after the number???
3259 * Is it a mistake to use a similar /dev/fd/ construct for
3264 * Be supersafe and do some sanity-checks.
3265 * Still, can we be sure we got the right thing?
3268 Perl_croak(aTHX_ "Wrong syntax (suid) fd script name \"%s\"\n", s);
3271 Perl_croak(aTHX_ "Missing (suid) fd script name\n");
3273 scriptname = savepv(s + 1);
3274 Safefree(PL_origfilename);
3275 PL_origfilename = (char *)scriptname;
3280 CopFILE_free(PL_curcop);
3281 CopFILE_set(PL_curcop, PL_origfilename);
3282 if (*PL_origfilename == '-' && PL_origfilename[1] == '\0')
3283 scriptname = (char *)"";
3284 if (PL_fdscript >= 0) {
3285 PL_rsfp = PerlIO_fdopen(PL_fdscript,PERL_SCRIPT_MODE);
3286 # if defined(HAS_FCNTL) && defined(F_SETFD)
3288 /* ensure close-on-exec */
3289 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1);
3294 Perl_croak(aTHX_ "sperl needs fd script\n"
3295 "You should not call sperl directly; do you need to "
3296 "change a #! line\nfrom sperl to perl?\n");
3299 * Do not open (or do other fancy stuff) while setuid.
3300 * Perl does the open, and hands script to suidperl on a fd;
3301 * suidperl only does some checks, sets up UIDs and re-execs
3302 * perl with that fd as it has always done.
3305 if (PL_suidscript != 1) {
3306 Perl_croak(aTHX_ "suidperl needs (suid) fd script\n");
3309 else if (PL_preprocess) {
3310 const char *cpp_cfg = CPPSTDIN;
3311 SV *cpp = newSVpvn("",0);
3312 SV *cmd = NEWSV(0,0);
3314 if (cpp_cfg[0] == 0) /* PERL_MICRO? */
3315 Perl_croak(aTHX_ "Can't run with cpp -P with CPPSTDIN undefined");
3316 if (strEQ(cpp_cfg, "cppstdin"))
3317 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
3318 sv_catpv(cpp, cpp_cfg);
3321 sv_catpvn(sv, "-I", 2);
3322 sv_catpv(sv,PRIVLIB_EXP);
3325 DEBUG_P(PerlIO_printf(Perl_debug_log,
3326 "PL_preprocess: scriptname=\"%s\", cpp=\"%s\", sv=\"%s\", CPPMINUS=\"%s\"\n",
3327 scriptname, SvPVX_const (cpp), SvPVX_const (sv),
3330 # if defined(MSDOS) || defined(WIN32) || defined(VMS)
3337 cpp_discard_flag = "";
3339 cpp_discard_flag = "-C";
3343 perl = os2_execname(aTHX);
3345 perl = PL_origargv[0];
3349 /* This strips off Perl comments which might interfere with
3350 the C pre-processor, including #!. #line directives are
3351 deliberately stripped to avoid confusion with Perl's version
3352 of #line. FWP played some golf with it so it will fit
3353 into VMS's 255 character buffer.
3356 code = "(1../^#!.*perl/i)|/^\\s*#(?!\\s*((ifn?|un)def|(el|end)?if|define|include|else|error|pragma)\\b)/||!($|=1)||print";
3358 code = "/^\\s*#(?!\\s*((ifn?|un)def|(el|end)?if|define|include|else|error|pragma)\\b)/||!($|=1)||print";
3360 Perl_sv_setpvf(aTHX_ cmd, "\
3361 %s -ne%s%s%s %s | %"SVf" %s %"SVf" %s",
3362 perl, quote, code, quote, scriptname, cpp,
3363 cpp_discard_flag, sv, CPPMINUS);
3365 PL_doextract = FALSE;
3367 DEBUG_P(PerlIO_printf(Perl_debug_log,
3368 "PL_preprocess: cmd=\"%s\"\n",
3371 PL_rsfp = PerlProc_popen((char *)SvPVX_const(cmd), (char *)"r");
3375 else if (!*scriptname) {
3376 forbid_setid("program input from stdin");
3377 PL_rsfp = PerlIO_stdin();
3380 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
3381 # if defined(HAS_FCNTL) && defined(F_SETFD)
3383 /* ensure close-on-exec */
3384 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1);
3387 #endif /* IAMSUID */
3389 /* PSz 16 Sep 03 Keep neat error message */
3390 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3391 CopFILE(PL_curcop), Strerror(errno));
3396 * I_SYSSTATVFS HAS_FSTATVFS
3398 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
3399 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
3400 * here so that metaconfig picks them up. */
3404 S_fd_on_nosuid_fs(pTHX_ int fd)
3407 * We used to do this as "plain" user (after swapping UIDs with setreuid);
3408 * but is needed also on machines without setreuid.
3409 * Seems safe enough to run as root.
3411 int check_okay = 0; /* able to do all the required sys/libcalls */
3412 int on_nosuid = 0; /* the fd is on a nosuid fs */
3414 * Need to check noexec also: nosuid might not be set, the average
3415 * sysadmin would say that nosuid is irrelevant once he sets noexec.
3417 int on_noexec = 0; /* the fd is on a noexec fs */
3420 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
3421 * fstatvfs() is UNIX98.
3422 * fstatfs() is 4.3 BSD.
3423 * ustat()+getmnt() is pre-4.3 BSD.
3424 * getmntent() is O(number-of-mounted-filesystems) and can hang on
3425 * an irrelevant filesystem while trying to reach the right one.
3428 #undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
3430 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
3431 defined(HAS_FSTATVFS)
3432 # define FD_ON_NOSUID_CHECK_OKAY
3433 struct statvfs stfs;
3435 check_okay = fstatvfs(fd, &stfs) == 0;
3436 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
3438 /* ST_NOEXEC certainly absent on AIX 5.1, and doesn't seem to be documented
3439 on platforms where it is present. */
3440 on_noexec = check_okay && (stfs.f_flag & ST_NOEXEC);
3442 # endif /* fstatvfs */
3444 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
3445 defined(PERL_MOUNT_NOSUID) && \
3446 defined(PERL_MOUNT_NOEXEC) && \
3447 defined(HAS_FSTATFS) && \
3448 defined(HAS_STRUCT_STATFS) && \
3449 defined(HAS_STRUCT_STATFS_F_FLAGS)
3450 # define FD_ON_NOSUID_CHECK_OKAY
3453 check_okay = fstatfs(fd, &stfs) == 0;
3454 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
3455 on_noexec = check_okay && (stfs.f_flags & PERL_MOUNT_NOEXEC);
3456 # endif /* fstatfs */
3458 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
3459 defined(PERL_MOUNT_NOSUID) && \
3460 defined(PERL_MOUNT_NOEXEC) && \
3461 defined(HAS_FSTAT) && \
3462 defined(HAS_USTAT) && \
3463 defined(HAS_GETMNT) && \
3464 defined(HAS_STRUCT_FS_DATA) && \
3466 # define FD_ON_NOSUID_CHECK_OKAY
3469 if (fstat(fd, &fdst) == 0) {
3471 if (ustat(fdst.st_dev, &us) == 0) {
3473 /* NOSTAT_ONE here because we're not examining fields which
3474 * vary between that case and STAT_ONE. */
3475 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
3476 size_t cmplen = sizeof(us.f_fname);
3477 if (sizeof(fsd.fd_req.path) < cmplen)
3478 cmplen = sizeof(fsd.fd_req.path);
3479 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
3480 fdst.st_dev == fsd.fd_req.dev) {
3482 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
3483 on_noexec = fsd.fd_req.flags & PERL_MOUNT_NOEXEC;
3489 # endif /* fstat+ustat+getmnt */
3491 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
3492 defined(HAS_GETMNTENT) && \
3493 defined(HAS_HASMNTOPT) && \
3494 defined(MNTOPT_NOSUID) && \
3495 defined(MNTOPT_NOEXEC)
3496 # define FD_ON_NOSUID_CHECK_OKAY
3497 FILE *mtab = fopen("/etc/mtab", "r");
3498 struct mntent *entry;
3501 if (mtab && (fstat(fd, &stb) == 0)) {
3502 while (entry = getmntent(mtab)) {
3503 if (stat(entry->mnt_dir, &fsb) == 0
3504 && fsb.st_dev == stb.st_dev)
3506 /* found the filesystem */
3508 if (hasmntopt(entry, MNTOPT_NOSUID))
3510 if (hasmntopt(entry, MNTOPT_NOEXEC))
3513 } /* A single fs may well fail its stat(). */
3518 # endif /* getmntent+hasmntopt */
3521 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid/noexec", PL_origfilename);
3523 Perl_croak(aTHX_ "Setuid script \"%s\" on nosuid filesystem", PL_origfilename);
3525 Perl_croak(aTHX_ "Setuid script \"%s\" on noexec filesystem", PL_origfilename);
3526 return ((!check_okay) || on_nosuid || on_noexec);
3528 #endif /* IAMSUID */
3531 S_validate_suid(pTHX_ const char *validarg, const char *scriptname)
3536 #endif /* IAMSUID */
3538 /* do we need to emulate setuid on scripts? */
3540 /* This code is for those BSD systems that have setuid #! scripts disabled
3541 * in the kernel because of a security problem. Merely defining DOSUID
3542 * in perl will not fix that problem, but if you have disabled setuid
3543 * scripts in the kernel, this will attempt to emulate setuid and setgid
3544 * on scripts that have those now-otherwise-useless bits set. The setuid
3545 * root version must be called suidperl or sperlN.NNN. If regular perl
3546 * discovers that it has opened a setuid script, it calls suidperl with
3547 * the same argv that it had. If suidperl finds that the script it has
3548 * just opened is NOT setuid root, it sets the effective uid back to the
3549 * uid. We don't just make perl setuid root because that loses the
3550 * effective uid we had before invoking perl, if it was different from the
3553 * Description/comments above do not match current workings:
3554 * suidperl must be hardlinked to sperlN.NNN (that is what we exec);
3555 * suidperl called with script open and name changed to /dev/fd/N/X;
3556 * suidperl croaks if script is not setuid;
3557 * making perl setuid would be a huge security risk (and yes, that
3558 * would lose any euid we might have had).
3560 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
3561 * be defined in suidperl only. suidperl must be setuid root. The
3562 * Configure script will set this up for you if you want it.
3568 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
3569 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
3570 if (PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
3572 const char *linestr;
3575 if (PL_fdscript < 0 || PL_suidscript != 1)
3576 Perl_croak(aTHX_ "Need (suid) fdscript in suidperl\n"); /* We already checked this */
3578 * Since the script is opened by perl, not suidperl, some of these
3579 * checks are superfluous. Leaving them in probably does not lower
3583 * Do checks even for systems with no HAS_SETREUID.
3584 * We used to swap, then re-swap UIDs with
3586 if (setreuid(PL_euid,PL_uid) < 0
3587 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
3588 Perl_croak(aTHX_ "Can't swap uid and euid");
3591 if (setreuid(PL_uid,PL_euid) < 0
3592 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
3593 Perl_croak(aTHX_ "Can't reswap uid and euid");
3597 /* On this access check to make sure the directories are readable,
3598 * there is actually a small window that the user could use to make
3599 * filename point to an accessible directory. So there is a faint
3600 * chance that someone could execute a setuid script down in a
3601 * non-accessible directory. I don't know what to do about that.
3602 * But I don't think it's too important. The manual lies when
3603 * it says access() is useful in setuid programs.
3605 * So, access() is pretty useless... but not harmful... do anyway.
3607 if (PerlLIO_access(CopFILE(PL_curcop),1)) { /*double check*/
3608 Perl_croak(aTHX_ "Can't access() script\n");
3611 /* If we can swap euid and uid, then we can determine access rights
3612 * with a simple stat of the file, and then compare device and
3613 * inode to make sure we did stat() on the same file we opened.
3614 * Then we just have to make sure he or she can execute it.
3617 * As the script is opened by perl, not suidperl, we do not need to
3618 * care much about access rights.
3620 * The 'script changed' check is needed, or we can get lied to
3621 * about $0 with e.g.
3622 * suidperl /dev/fd/4//bin/x 4<setuidscript
3623 * Without HAS_SETREUID, is it safe to stat() as root?
3625 * Are there any operating systems that pass /dev/fd/xxx for setuid
3626 * scripts, as suggested/described in perlsec(1)? Surely they do not
3627 * pass the script name as we do, so the "script changed" test would
3628 * fail for them... but we never get here with
3629 * SETUID_SCRIPTS_ARE_SECURE_NOW defined.
3631 * This is one place where we must "lie" about return status: not
3632 * say if the stat() failed. We are doing this as root, and could
3633 * be tricked into reporting existence or not of files that the
3634 * "plain" user cannot even see.
3638 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0 ||
3639 tmpstatbuf.st_dev != PL_statbuf.st_dev ||
3640 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
3641 Perl_croak(aTHX_ "Setuid script changed\n");
3645 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
3646 Perl_croak(aTHX_ "Real UID cannot exec script\n");
3649 * We used to do this check as the "plain" user (after swapping
3650 * UIDs). But the check for nosuid and noexec filesystem is needed,
3651 * and should be done even without HAS_SETREUID. (Maybe those
3652 * operating systems do not have such mount options anyway...)
3653 * Seems safe enough to do as root.
3655 #if !defined(NO_NOSUID_CHECK)
3656 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp))) {
3657 Perl_croak(aTHX_ "Setuid script on nosuid or noexec filesystem\n");
3660 #endif /* IAMSUID */
3662 if (!S_ISREG(PL_statbuf.st_mode)) {
3663 Perl_croak(aTHX_ "Setuid script not plain file\n");
3665 if (PL_statbuf.st_mode & S_IWOTH)
3666 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
3667 PL_doswitches = FALSE; /* -s is insecure in suid */
3668 /* PSz 13 Nov 03 But -s was caught elsewhere ... so unsetting it here is useless(?!) */
3669 CopLINE_inc(PL_curcop);
3670 linestr = SvPV_nolen_const(PL_linestr);
3671 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
3672 strnNE(linestr,"#!",2) ) /* required even on Sys V */
3673 Perl_croak(aTHX_ "No #! line");
3677 /* Sanity check on line length */
3678 if (strlen(s) < 1 || strlen(s) > 4000)
3679 Perl_croak(aTHX_ "Very long #! line");
3680 /* Allow more than a single space after #! */
3681 while (isSPACE(*s)) s++;
3682 /* Sanity check on buffer end */
3683 while ((*s) && !isSPACE(*s)) s++;
3684 for (s2 = s; (s2 > linestr &&
3685 (isDIGIT(s2[-1]) || s2[-1] == '.' || s2[-1] == '_'
3686 || s2[-1] == '-')); s2--) ;
3687 /* Sanity check on buffer start */
3688 if ( (s2-4 < linestr || strnNE(s2-4,"perl",4)) &&
3689 (s-9 < linestr || strnNE(s-9,"perl",4)) )
3690 Perl_croak(aTHX_ "Not a perl script");
3691 while (*s == ' ' || *s == '\t') s++;
3693 * #! arg must be what we saw above. They can invoke it by
3694 * mentioning suidperl explicitly, but they may not add any strange
3695 * arguments beyond what #! says if they do invoke suidperl that way.
3698 * The way validarg was set up, we rely on the kernel to start
3699 * scripts with argv[1] set to contain all #! line switches (the
3703 * Check that we got all the arguments listed in the #! line (not
3704 * just that there are no extraneous arguments). Might not matter
3705 * much, as switches from #! line seem to be acted upon (also), and
3706 * so may be checked and trapped in perl. But, security checks must
3707 * be done in suidperl and not deferred to perl. Note that suidperl
3708 * does not get around to parsing (and checking) the switches on
3709 * the #! line (but execs perl sooner).
3710 * Allow (require) a trailing newline (which may be of two
3711 * characters on some architectures?) (but no other trailing
3714 len = strlen(validarg);
3715 if (strEQ(validarg," PHOOEY ") ||
3716 strnNE(s,validarg,len) || !isSPACE(s[len]) ||
3717 !(strlen(s) == len+1 || (strlen(s) == len+2 && isSPACE(s[len+1]))))
3718 Perl_croak(aTHX_ "Args must match #! line");
3721 if (PL_fdscript < 0 &&
3722 PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
3723 PL_euid == PL_statbuf.st_uid)
3725 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3726 FIX YOUR KERNEL, OR PUT A C WRAPPER AROUND THIS SCRIPT!\n");
3727 #endif /* IAMSUID */
3729 if (PL_fdscript < 0 &&
3730 PL_euid) { /* oops, we're not the setuid root perl */
3732 * When root runs a setuid script, we do not go through the same
3733 * steps of execing sperl and then perl with fd scripts, but
3734 * simply set up UIDs within the same perl invocation; so do
3735 * not have the same checks (on options, whatever) that we have
3736 * for plain users. No problem really: would have to be a script
3737 * that does not actually work for plain users; and if root is
3738 * foolish and can be persuaded to run such an unsafe script, he
3739 * might run also non-setuid ones, and deserves what he gets.
3741 * Or, we might drop the PL_euid check above (and rely just on
3742 * PL_fdscript to avoid loops), and do the execs
3748 * Pass fd script to suidperl.
3749 * Exec suidperl, substituting fd script for scriptname.
3750 * Pass script name as "subdir" of fd, which perl will grok;
3751 * in fact will use that to distinguish this from "normal"
3752 * usage, see comments above.
3754 PerlIO_rewind(PL_rsfp);
3755 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
3756 /* PSz 27 Feb 04 Sanity checks on scriptname */
3757 if ((!scriptname) || (!*scriptname) ) {
3758 Perl_croak(aTHX_ "No setuid script name\n");
3760 if (*scriptname == '-') {
3761 Perl_croak(aTHX_ "Setuid script name may not begin with dash\n");
3762 /* Or we might confuse it with an option when replacing
3763 * name in argument list, below (though we do pointer, not
3764 * string, comparisons).
3767 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3768 if (!PL_origargv[which]) {
3769 Perl_croak(aTHX_ "Can't change argv to have fd script\n");
3771 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
3772 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
3773 #if defined(HAS_FCNTL) && defined(F_SETFD)
3774 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
3777 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
3778 (int)PERL_REVISION, (int)PERL_VERSION,
3779 (int)PERL_SUBVERSION), PL_origargv);
3781 #endif /* IAMSUID */
3782 Perl_croak(aTHX_ "Can't do setuid (cannot exec sperl)\n");
3785 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
3787 * This seems back to front: we try HAS_SETEGID first; if not available
3788 * then try HAS_SETREGID; as a last chance we try HAS_SETRESGID. May be OK
3789 * in the sense that we only want to set EGID; but are there any machines
3790 * with either of the latter, but not the former? Same with UID, later.
3793 (void)setegid(PL_statbuf.st_gid);
3796 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
3798 #ifdef HAS_SETRESGID
3799 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
3801 PerlProc_setgid(PL_statbuf.st_gid);
3805 if (PerlProc_getegid() != PL_statbuf.st_gid)
3806 Perl_croak(aTHX_ "Can't do setegid!\n");
3808 if (PL_statbuf.st_mode & S_ISUID) {
3809 if (PL_statbuf.st_uid != PL_euid)
3811 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
3814 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
3816 #ifdef HAS_SETRESUID
3817 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
3819 PerlProc_setuid(PL_statbuf.st_uid);
3823 if (PerlProc_geteuid() != PL_statbuf.st_uid)
3824 Perl_croak(aTHX_ "Can't do seteuid!\n");
3826 else if (PL_uid) { /* oops, mustn't run as root */
3828 (void)seteuid((Uid_t)PL_uid);
3831 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
3833 #ifdef HAS_SETRESUID
3834 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
3836 PerlProc_setuid((Uid_t)PL_uid);
3840 if (PerlProc_geteuid() != PL_uid)
3841 Perl_croak(aTHX_ "Can't do seteuid!\n");
3844 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
3845 Perl_croak(aTHX_ "Effective UID cannot exec script\n"); /* they can't do this */
3848 else if (PL_preprocess) /* PSz 13 Nov 03 Caught elsewhere, useless(?!) here */
3849 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
3850 else if (PL_fdscript < 0 || PL_suidscript != 1)
3851 /* PSz 13 Nov 03 Caught elsewhere, useless(?!) here */
3852 Perl_croak(aTHX_ "(suid) fdscript needed in suidperl\n");
3854 /* PSz 16 Sep 03 Keep neat error message */
3855 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
3858 /* We absolutely must clear out any saved ids here, so we */
3859 /* exec the real perl, substituting fd script for scriptname. */
3860 /* (We pass script name as "subdir" of fd, which perl will grok.) */
3862 * It might be thought that using setresgid and/or setresuid (changed to
3863 * set the saved IDs) above might obviate the need to exec, and we could
3864 * go on to "do the perl thing".
3866 * Is there such a thing as "saved GID", and is that set for setuid (but
3867 * not setgid) execution like suidperl? Without exec, it would not be
3868 * cleared for setuid (but not setgid) scripts (or might need a dummy
3871 * We need suidperl to do the exact same argument checking that perl
3872 * does. Thus it cannot be very small; while it could be significantly
3873 * smaller, it is safer (simpler?) to make it essentially the same
3874 * binary as perl (but they are not identical). - Maybe could defer that
3875 * check to the invoked perl, and suidperl be a tiny wrapper instead;
3876 * but prefer to do thorough checks in suidperl itself. Such deferral
3877 * would make suidperl security rely on perl, a design no-no.
3879 * Setuid things should be short and simple, thus easy to understand and
3880 * verify. They should do their "own thing", without influence by
3881 * attackers. It may help if their internal execution flow is fixed,
3882 * regardless of platform: it may be best to exec anyway.
3884 * Suidperl should at least be conceptually simple: a wrapper only,
3885 * never to do any real perl. Maybe we should put
3887 * Perl_croak(aTHX_ "Suidperl should never do real perl\n");
3889 * into the perly bits.
3891 PerlIO_rewind(PL_rsfp);
3892 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
3894 * Keep original arguments: suidperl already has fd script.
3896 /* for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ; */
3897 /* if (!PL_origargv[which]) { */
3898 /* errno = EPERM; */
3899 /* Perl_croak(aTHX_ "Permission denied\n"); */
3901 /* PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s", */
3902 /* PerlIO_fileno(PL_rsfp), PL_origargv[which])); */
3903 #if defined(HAS_FCNTL) && defined(F_SETFD)
3904 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
3907 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
3908 (int)PERL_REVISION, (int)PERL_VERSION,
3909 (int)PERL_SUBVERSION), PL_origargv);/* try again */
3911 Perl_croak(aTHX_ "Can't do setuid (suidperl cannot exec perl)\n");
3912 #endif /* IAMSUID */
3914 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
3915 #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
3916 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3917 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3919 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3922 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3923 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3924 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3925 /* not set-id, must be wrapped */
3933 S_find_beginning(pTHX)
3936 register const char *s2;
3937 #ifdef MACOS_TRADITIONAL
3941 /* skip forward in input to the real script? */
3944 #ifdef MACOS_TRADITIONAL
3945 /* Since the Mac OS does not honor #! arguments for us, we do it ourselves */
3947 while (PL_doextract || gMacPerl_AlwaysExtract) {
3948 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3949 if (!gMacPerl_AlwaysExtract)
3950 Perl_croak(aTHX_ "No Perl script found in input\n");
3952 if (PL_doextract) /* require explicit override ? */
3953 if (!OverrideExtract(PL_origfilename))
3954 Perl_croak(aTHX_ "User aborted script\n");
3956 PL_doextract = FALSE;
3958 /* Pater peccavi, file does not have #! */
3959 PerlIO_rewind(PL_rsfp);
3964 while (PL_doextract) {
3965 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
3966 Perl_croak(aTHX_ "No Perl script found in input\n");
3969 if (*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))) {
3970 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3971 PL_doextract = FALSE;
3972 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3974 while (*s == ' ' || *s == '\t') s++;
3976 while (isDIGIT(s2[-1]) || s2[-1] == '-' || s2[-1] == '.'
3977 || s2[-1] == '_') s2--;
3978 if (strnEQ(s2-4,"perl",4))
3979 while ((s = moreswitches(s)))
3982 #ifdef MACOS_TRADITIONAL
3983 /* We are always searching for the #!perl line in MacPerl,
3984 * so if we find it, still keep the line count correct
3985 * by counting lines we already skipped over
3987 for (; maclines > 0 ; maclines--)
3988 PerlIO_ungetc(PL_rsfp, '\n');
3992 /* gMacPerl_AlwaysExtract is false in MPW tool */
3993 } else if (gMacPerl_AlwaysExtract) {
4004 PL_uid = PerlProc_getuid();
4005 PL_euid = PerlProc_geteuid();
4006 PL_gid = PerlProc_getgid();
4007 PL_egid = PerlProc_getegid();
4009 PL_uid |= PL_gid << 16;
4010 PL_euid |= PL_egid << 16;
4012 /* Should not happen: */
4013 CHECK_MALLOC_TAINT(PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
4014 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
4017 * Should go by suidscript, not uid!=euid: why disallow
4018 * system("ls") in scripts run from setuid things?
4019 * Or, is this run before we check arguments and set suidscript?
4020 * What about SETUID_SCRIPTS_ARE_SECURE_NOW: could we use fdscript then?
4021 * (We never have suidscript, can we be sure to have fdscript?)
4022 * Or must then go by UID checks? See comments in forbid_setid also.
4026 /* This is used very early in the lifetime of the program,
4027 * before even the options are parsed, so PL_tainting has
4028 * not been initialized properly. */
4030 Perl_doing_taint(int argc, char *argv[], char *envp[])
4032 #ifndef PERL_IMPLICIT_SYS
4033 /* If we have PERL_IMPLICIT_SYS we can't call getuid() et alia
4034 * before we have an interpreter-- and the whole point of this
4035 * function is to be called at such an early stage. If you are on
4036 * a system with PERL_IMPLICIT_SYS but you do have a concept of
4037 * "tainted because running with altered effective ids', you'll
4038 * have to add your own checks somewhere in here. The two most
4039 * known samples of 'implicitness' are Win32 and NetWare, neither
4040 * of which has much of concept of 'uids'. */
4041 int uid = PerlProc_getuid();
4042 int euid = PerlProc_geteuid();
4043 int gid = PerlProc_getgid();
4044 int egid = PerlProc_getegid();
4051 if (uid && (euid != uid || egid != gid))
4053 #endif /* !PERL_IMPLICIT_SYS */
4054 /* This is a really primitive check; environment gets ignored only
4055 * if -T are the first chars together; otherwise one gets
4056 * "Too late" message. */
4057 if ( argc > 1 && argv[1][0] == '-'
4058 && (argv[1][1] == 't' || argv[1][1] == 'T') )
4064 S_forbid_setid(pTHX_ const char *s)
4066 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
4067 if (PL_euid != PL_uid)
4068 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
4069 if (PL_egid != PL_gid)
4070 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
4071 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
4073 * Checks for UID/GID above "wrong": why disallow
4074 * perl -e 'print "Hello\n"'
4075 * from within setuid things?? Simply drop them: replaced by
4076 * fdscript/suidscript and #ifdef IAMSUID checks below.
4078 * This may be too late for command-line switches. Will catch those on
4079 * the #! line, after finding the script name and setting up
4080 * fdscript/suidscript. Note that suidperl does not get around to
4081 * parsing (and checking) the switches on the #! line, but checks that
4082 * the two sets are identical.
4084 * With SETUID_SCRIPTS_ARE_SECURE_NOW, could we use fdscript, also or
4085 * instead, or would that be "too late"? (We never have suidscript, can
4086 * we be sure to have fdscript?)
4088 * Catch things with suidscript (in descendant of suidperl), even with
4089 * right UID/GID. Was already checked in suidperl, with #ifdef IAMSUID,
4090 * below; but I am paranoid.
4092 * Also see comments about root running a setuid script, elsewhere.
4094 if (PL_suidscript >= 0)
4095 Perl_croak(aTHX_ "No %s allowed with (suid) fdscript", s);
4097 /* PSz 11 Nov 03 Catch it in suidperl, always! */
4098 Perl_croak(aTHX_ "No %s allowed in suidperl", s);
4099 #endif /* IAMSUID */
4103 Perl_init_debugger(pTHX)
4105 HV *ostash = PL_curstash;
4107 PL_curstash = PL_debstash;
4108 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("DB::args", GV_ADDMULTI, SVt_PVAV))));
4109 AvREAL_off(PL_dbargs);
4110 PL_DBgv = gv_fetchpv("DB::DB", GV_ADDMULTI, SVt_PVGV);
4111 PL_DBline = gv_fetchpv("DB::dbline", GV_ADDMULTI, SVt_PVAV);
4112 PL_DBsub = gv_HVadd(gv_fetchpv("DB::sub", GV_ADDMULTI, SVt_PVHV));
4113 PL_DBsingle = GvSV((gv_fetchpv("DB::single", GV_ADDMULTI, SVt_PV)));
4114 sv_setiv(PL_DBsingle, 0);
4115 PL_DBtrace = GvSV((gv_fetchpv("DB::trace", GV_ADDMULTI, SVt_PV)));
4116 sv_setiv(PL_DBtrace, 0);
4117 PL_DBsignal = GvSV((gv_fetchpv("DB::signal", GV_ADDMULTI, SVt_PV)));
4118 sv_setiv(PL_DBsignal, 0);
4119 PL_DBassertion = GvSV((gv_fetchpv("DB::assertion", GV_ADDMULTI, SVt_PV)));
4120 sv_setiv(PL_DBassertion, 0);
4121 PL_curstash = ostash;
4124 #ifndef STRESS_REALLOC
4125 #define REASONABLE(size) (size)
4127 #define REASONABLE(size) (1) /* unreasonable */
4131 Perl_init_stacks(pTHX)
4133 /* start with 128-item stack and 8K cxstack */
4134 PL_curstackinfo = new_stackinfo(REASONABLE(128),
4135 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
4136 PL_curstackinfo->si_type = PERLSI_MAIN;
4137 PL_curstack = PL_curstackinfo->si_stack;
4138 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
4140 PL_stack_base = AvARRAY(PL_curstack);
4141 PL_stack_sp = PL_stack_base;
4142 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
4144 New(50,PL_tmps_stack,REASONABLE(128),SV*);
4147 PL_tmps_max = REASONABLE(128);
4149 New(54,PL_markstack,REASONABLE(32),I32);
4150 PL_markstack_ptr = PL_markstack;
4151 PL_markstack_max = PL_markstack + REASONABLE(32);
4155 New(54,PL_scopestack,REASONABLE(32),I32);
4156 PL_scopestack_ix = 0;
4157 PL_scopestack_max = REASONABLE(32);
4159 New(54,PL_savestack,REASONABLE(128),ANY);
4160 PL_savestack_ix = 0;
4161 PL_savestack_max = REASONABLE(128);
4169 while (PL_curstackinfo->si_next)
4170 PL_curstackinfo = PL_curstackinfo->si_next;
4171 while (PL_curstackinfo) {
4172 PERL_SI *p = PL_curstackinfo->si_prev;
4173 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
4174 Safefree(PL_curstackinfo->si_cxstack);
4175 Safefree(PL_curstackinfo);
4176 PL_curstackinfo = p;
4178 Safefree(PL_tmps_stack);
4179 Safefree(PL_markstack);
4180 Safefree(PL_scopestack);
4181 Safefree(PL_savestack);
4190 lex_start(PL_linestr);
4192 PL_subname = newSVpvn("main",4);
4196 S_init_predump_symbols(pTHX)
4201 sv_setpvn(get_sv("\"", TRUE), " ", 1);
4202 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
4203 GvMULTI_on(PL_stdingv);
4204 io = GvIOp(PL_stdingv);
4205 IoTYPE(io) = IoTYPE_RDONLY;
4206 IoIFP(io) = PerlIO_stdin();
4207 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
4209 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
4211 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
4214 IoTYPE(io) = IoTYPE_WRONLY;
4215 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
4217 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
4219 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
4221 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
4222 GvMULTI_on(PL_stderrgv);
4223 io = GvIOp(PL_stderrgv);
4224 IoTYPE(io) = IoTYPE_WRONLY;
4225 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
4226 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
4228 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
4230 PL_statname = NEWSV(66,0); /* last filename we did stat on */
4233 Safefree(PL_osname);
4234 PL_osname = savepv(OSNAME);
4238 Perl_init_argv_symbols(pTHX_ register int argc, register char **argv)
4241 argc--,argv++; /* skip name of script */
4242 if (PL_doswitches) {
4243 for (; argc > 0 && **argv == '-'; argc--,argv++) {
4246 if (argv[0][1] == '-' && !argv[0][2]) {
4250 if ((s = strchr(argv[0], '='))) {
4252 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
4255 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
4258 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
4259 GvMULTI_on(PL_argvgv);
4260 (void)gv_AVadd(PL_argvgv);
4261 av_clear(GvAVn(PL_argvgv));
4262 for (; argc > 0; argc--,argv++) {
4263 SV *sv = newSVpv(argv[0],0);
4264 av_push(GvAVn(PL_argvgv),sv);
4265 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
4266 if (PL_unicode & PERL_UNICODE_ARGV_FLAG)
4269 if (PL_unicode & PERL_UNICODE_WIDESYSCALLS_FLAG) /* Sarathy? */
4270 (void)sv_utf8_decode(sv);
4276 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
4281 PL_toptarget = NEWSV(0,0);
4282 sv_upgrade(PL_toptarget, SVt_PVFM);
4283 sv_setpvn(PL_toptarget, "", 0);
4284 PL_bodytarget = NEWSV(0,0);
4285 sv_upgrade(PL_bodytarget, SVt_PVFM);
4286 sv_setpvn(PL_bodytarget, "", 0);
4287 PL_formtarget = PL_bodytarget;
4291 init_argv_symbols(argc,argv);
4293 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
4294 #ifdef MACOS_TRADITIONAL
4295 /* $0 is not majick on a Mac */
4296 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
4298 sv_setpv(GvSV(tmpgv),PL_origfilename);
4299 magicname("0", "0", 1);
4302 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
4304 GvMULTI_on(PL_envgv);
4305 hv = GvHVn(PL_envgv);
4306 hv_magic(hv, Nullgv, PERL_MAGIC_env);
4308 #ifdef USE_ENVIRON_ARRAY
4309 /* Note that if the supplied env parameter is actually a copy
4310 of the global environ then it may now point to free'd memory
4311 if the environment has been modified since. To avoid this
4312 problem we treat env==NULL as meaning 'use the default'
4317 # ifdef USE_ITHREADS
4318 && PL_curinterp == aTHX
4322 environ[0] = Nullch;
4325 char** origenv = environ;
4328 for (; *env; env++) {
4329 if (!(s = strchr(*env,'=')) || s == *env)
4331 #if defined(MSDOS) && !defined(DJGPP)
4336 sv = newSVpv(s+1, 0);
4337 (void)hv_store(hv, *env, s - *env, sv, 0);
4340 if (origenv != environ) {
4341 /* realloc has shifted us */
4342 env = (env - origenv) + environ;
4347 #endif /* USE_ENVIRON_ARRAY */
4348 #endif /* !PERL_MICRO */
4351 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV))) {
4352 SvREADONLY_off(GvSV(tmpgv));
4353 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
4354 SvREADONLY_on(GvSV(tmpgv));
4356 #ifdef THREADS_HAVE_PIDS
4357 PL_ppid = (IV)getppid();
4360 /* touch @F array to prevent spurious warnings 20020415 MJD */
4362 (void) get_av("main::F", TRUE | GV_ADDMULTI);
4364 /* touch @- and @+ arrays to prevent spurious warnings 20020415 MJD */
4365 (void) get_av("main::-", TRUE | GV_ADDMULTI);
4366 (void) get_av("main::+", TRUE | GV_ADDMULTI);
4370 S_init_perllib(pTHX)
4375 s = PerlEnv_getenv("PERL5LIB");
4377 incpush(s, TRUE, TRUE, TRUE, FALSE);
4379 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE, TRUE, FALSE);
4381 /* Treat PERL5?LIB as a possible search list logical name -- the
4382 * "natural" VMS idiom for a Unix path string. We allow each
4383 * element to be a set of |-separated directories for compatibility.
4387 if (my_trnlnm("PERL5LIB",buf,0))
4388 do { incpush(buf,TRUE,TRUE,TRUE,FALSE); } while (my_trnlnm("PERL5LIB",buf,++idx));
4390 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE,TRUE,FALSE);
4394 /* Use the ~-expanded versions of APPLLIB (undocumented),
4395 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
4398 incpush(APPLLIB_EXP, TRUE, TRUE, TRUE, TRUE);
4402 incpush(ARCHLIB_EXP, FALSE, FALSE, TRUE, TRUE);
4404 #ifdef MACOS_TRADITIONAL
4407 SV * privdir = NEWSV(55, 0);
4408 char * macperl = PerlEnv_getenv("MACPERL");
4413 Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl);
4414 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
4415 incpush(SvPVX(privdir), TRUE, FALSE, TRUE, FALSE);
4416 Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl);
4417 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
4418 incpush(SvPVX(privdir), TRUE, FALSE, TRUE, FALSE);
4420 SvREFCNT_dec(privdir);
4423 incpush(":", FALSE, FALSE, TRUE, FALSE);
4426 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
4429 incpush(PRIVLIB_EXP, TRUE, FALSE, TRUE, TRUE);
4431 incpush(PRIVLIB_EXP, FALSE, FALSE, TRUE, TRUE);
4435 /* sitearch is always relative to sitelib on Windows for
4436 * DLL-based path intuition to work correctly */
4437 # if !defined(WIN32)
4438 incpush(SITEARCH_EXP, FALSE, FALSE, TRUE, TRUE);
4444 /* this picks up sitearch as well */
4445 incpush(SITELIB_EXP, TRUE, FALSE, TRUE, TRUE);
4447 incpush(SITELIB_EXP, FALSE, FALSE, TRUE, TRUE);
4451 #ifdef SITELIB_STEM /* Search for version-specific dirs below here */
4452 incpush(SITELIB_STEM, FALSE, TRUE, TRUE, TRUE);
4455 #ifdef PERL_VENDORARCH_EXP
4456 /* vendorarch is always relative to vendorlib on Windows for
4457 * DLL-based path intuition to work correctly */
4458 # if !defined(WIN32)
4459 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE, TRUE, TRUE);
4463 #ifdef PERL_VENDORLIB_EXP
4465 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE, TRUE, TRUE); /* this picks up vendorarch as well */
4467 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE, TRUE, TRUE);
4471 #ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
4472 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE, TRUE, TRUE);
4475 #ifdef PERL_OTHERLIBDIRS
4476 incpush(PERL_OTHERLIBDIRS, TRUE, TRUE, TRUE, TRUE);
4480 incpush(".", FALSE, FALSE, TRUE, FALSE);
4481 #endif /* MACOS_TRADITIONAL */
4484 #if defined(DOSISH) || defined(EPOC) || defined(SYMBIAN)
4485 # define PERLLIB_SEP ';'
4488 # define PERLLIB_SEP '|'
4490 # if defined(MACOS_TRADITIONAL)
4491 # define PERLLIB_SEP ','
4493 # define PERLLIB_SEP ':'
4497 #ifndef PERLLIB_MANGLE
4498 # define PERLLIB_MANGLE(s,n) (s)
4501 /* Push a directory onto @INC if it exists.
4502 Generate a new SV if we do this, to save needing to copy the SV we push
4505 S_incpush_if_exists(pTHX_ SV *dir)
4508 if (PerlLIO_stat(SvPVX_const(dir), &tmpstatbuf) >= 0 &&
4509 S_ISDIR(tmpstatbuf.st_mode)) {
4510 av_push(GvAVn(PL_incgv), dir);
4517 S_incpush(pTHX_ const char *dir, bool addsubdirs, bool addoldvers, bool usesep,
4520 SV *subdir = Nullsv;
4521 const char *p = dir;
4526 if (addsubdirs || addoldvers) {
4527 subdir = NEWSV(0,0);
4530 /* Break at all separators */
4532 SV *libdir = NEWSV(55,0);
4535 /* skip any consecutive separators */
4537 while ( *p == PERLLIB_SEP ) {
4538 /* Uncomment the next line for PATH semantics */
4539 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
4544 if ( usesep && (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
4545 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
4550 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
4551 p = Nullch; /* break out */
4553 #ifdef MACOS_TRADITIONAL
4554 if (!strchr(SvPVX(libdir), ':')) {
4557 sv_setpv(libdir, MacPerl_CanonDir(SvPVX(libdir), buf, 0));
4559 if (SvPVX(libdir)[SvCUR(libdir)-1] != ':')
4560 sv_catpv(libdir, ":");
4563 /* Do the if() outside the #ifdef to avoid warnings about an unused
4566 #ifdef PERL_RELOCATABLE_INC
4568 * Relocatable include entries are marked with a leading .../
4571 * 0: Remove that leading ".../"
4572 * 1: Remove trailing executable name (anything after the last '/')
4573 * from the perl path to give a perl prefix
4575 * While the @INC element starts "../" and the prefix ends with a real
4576 * directory (ie not . or ..) chop that real directory off the prefix
4577 * and the leading "../" from the @INC element. ie a logical "../"
4579 * Finally concatenate the prefix and the remainder of the @INC element
4580 * The intent is that /usr/local/bin/perl and .../../lib/perl5
4581 * generates /usr/local/lib/perl5
4583 char *libpath = SvPVX(libdir);
4584 STRLEN libpath_len = SvCUR(libdir);
4585 if (libpath_len >= 4 && memEQ (libpath, ".../", 4)) {
4587 SV *caret_X = get_sv("\030", 0);
4588 /* Going to use the SV just as a scratch buffer holding a C
4594 /* $^X is *the* source of taint if tainting is on, hence
4595 SvPOK() won't be true. */
4597 assert(SvPOKp(caret_X));
4598 prefix_sv = newSVpvn(SvPVX(caret_X), SvCUR(caret_X));
4599 /* Firstly take off the leading .../
4600 If all else fail we'll do the paths relative to the current
4602 sv_chop(libdir, libpath + 4);
4603 /* Don't use SvPV as we're intentionally bypassing taining,
4604 mortal copies that the mg_get of tainting creates, and
4605 corruption that seems to come via the save stack.
4606 I guess that the save stack isn't correctly set up yet. */
4607 libpath = SvPVX(libdir);
4608 libpath_len = SvCUR(libdir);
4610 /* This would work more efficiently with memrchr, but as it's
4611 only a GNU extension we'd need to probe for it and
4612 implement our own. Not hard, but maybe not worth it? */
4614 prefix = SvPVX(prefix_sv);
4615 lastslash = strrchr(prefix, '/');
4617 /* First time in with the *lastslash = '\0' we just wipe off
4618 the trailing /perl from (say) /usr/foo/bin/perl
4622 while ((*lastslash = '\0'), /* Do that, come what may. */
4623 (libpath_len >= 3 && memEQ(libpath, "../", 3)
4624 && (lastslash = strrchr(prefix, '/')))) {
4625 if (lastslash[1] == '\0'
4626 || (lastslash[1] == '.'
4627 && (lastslash[2] == '/' /* ends "/." */
4628 || (lastslash[2] == '/'
4629 && lastslash[3] == '/' /* or "/.." */
4631 /* Prefix ends "/" or "/." or "/..", any of which
4632 are fishy, so don't do any more logical cleanup.
4636 /* Remove leading "../" from path */
4639 /* Next iteration round the loop removes the last
4640 directory name from prefix by writing a '\0' in
4641 the while clause. */
4643 /* prefix has been terminated with a '\0' to the correct
4644 length. libpath points somewhere into the libdir SV.
4645 We need to join the 2 with '/' and drop the result into
4647 tempsv = Perl_newSVpvf(aTHX_ "%s/%s", prefix, libpath);
4648 SvREFCNT_dec(libdir);
4649 /* And this is the new libdir. */
4652 (PL_uid != PL_euid || PL_gid != PL_egid)) {
4653 /* Need to taint reloccated paths if running set ID */
4654 SvTAINTED_on(libdir);
4657 SvREFCNT_dec(prefix_sv);
4662 * BEFORE pushing libdir onto @INC we may first push version- and
4663 * archname-specific sub-directories.
4665 if (addsubdirs || addoldvers) {
4666 #ifdef PERL_INC_VERSION_LIST
4667 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
4668 const char *incverlist[] = { PERL_INC_VERSION_LIST };
4669 const char **incver;
4675 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
4677 while (unix[len-1] == '/') len--; /* Cosmetic */
4678 sv_usepvn(libdir,unix,len);
4681 PerlIO_printf(Perl_error_log,
4682 "Failed to unixify @INC element \"%s\"\n",
4686 #ifdef MACOS_TRADITIONAL
4687 #define PERL_AV_SUFFIX_FMT ""
4688 #define PERL_ARCH_FMT "%s:"
4689 #define PERL_ARCH_FMT_PATH PERL_FS_VER_FMT PERL_AV_SUFFIX_FMT
4691 #define PERL_AV_SUFFIX_FMT "/"
4692 #define PERL_ARCH_FMT "/%s"
4693 #define PERL_ARCH_FMT_PATH PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT
4695 /* .../version/archname if -d .../version/archname */
4696 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH PERL_ARCH_FMT,
4698 (int)PERL_REVISION, (int)PERL_VERSION,
4699 (int)PERL_SUBVERSION, ARCHNAME);
4700 subdir = S_incpush_if_exists(aTHX_ subdir);
4702 /* .../version if -d .../version */
4703 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH, libdir,
4704 (int)PERL_REVISION, (int)PERL_VERSION,
4705 (int)PERL_SUBVERSION);
4706 subdir = S_incpush_if_exists(aTHX_ subdir);
4708 /* .../archname if -d .../archname */
4709 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, ARCHNAME);
4710 subdir = S_incpush_if_exists(aTHX_ subdir);
4714 #ifdef PERL_INC_VERSION_LIST
4716 for (incver = incverlist; *incver; incver++) {
4717 /* .../xxx if -d .../xxx */
4718 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, *incver);
4719 subdir = S_incpush_if_exists(aTHX_ subdir);
4725 /* finally push this lib directory on the end of @INC */
4726 av_push(GvAVn(PL_incgv), libdir);
4729 assert (SvREFCNT(subdir) == 1);
4730 SvREFCNT_dec(subdir);
4734 #ifdef USE_5005THREADS
4735 STATIC struct perl_thread *
4736 S_init_main_thread(pTHX)
4738 #if !defined(PERL_IMPLICIT_CONTEXT)
4739 struct perl_thread *thr;
4743 Newz(53, thr, 1, struct perl_thread);
4744 PL_curcop = &PL_compiling;
4745 thr->interp = PERL_GET_INTERP;
4746 thr->cvcache = newHV();
4747 thr->threadsv = newAV();
4748 /* thr->threadsvp is set when find_threadsv is called */
4749 thr->specific = newAV();
4750 thr->flags = THRf_R_JOINABLE;
4751 MUTEX_INIT(&thr->mutex);
4752 /* Handcraft thrsv similarly to mess_sv */
4753 New(53, PL_thrsv, 1, SV);
4754 Newz(53, xpv, 1, XPV);
4755 SvFLAGS(PL_thrsv) = SVt_PV;
4756 SvANY(PL_thrsv) = (void*)xpv;
4757 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
4758 SvPV_set(PL_thrsvr, (char*)thr);
4759 SvCUR_set(PL_thrsv, sizeof(thr));
4760 SvLEN_set(PL_thrsv, sizeof(thr));
4761 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
4762 thr->oursv = PL_thrsv;
4763 PL_chopset = " \n-";
4766 MUTEX_LOCK(&PL_threads_mutex);
4772 MUTEX_UNLOCK(&PL_threads_mutex);
4774 #ifdef HAVE_THREAD_INTERN
4775 Perl_init_thread_intern(thr);
4778 #ifdef SET_THREAD_SELF
4779 SET_THREAD_SELF(thr);
4781 thr->self = pthread_self();
4782 #endif /* SET_THREAD_SELF */
4786 * These must come after the thread self setting
4787 * because sv_setpvn does SvTAINT and the taint
4788 * fields thread selfness being set.
4790 PL_toptarget = NEWSV(0,0);
4791 sv_upgrade(PL_toptarget, SVt_PVFM);
4792 sv_setpvn(PL_toptarget, "", 0);
4793 PL_bodytarget = NEWSV(0,0);
4794 sv_upgrade(PL_bodytarget, SVt_PVFM);
4795 sv_setpvn(PL_bodytarget, "", 0);
4796 PL_formtarget = PL_bodytarget;
4797 thr->errsv = newSVpvn("", 0);
4798 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
4801 PL_peepp = MEMBER_TO_FPTR(Perl_peep);
4802 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
4803 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
4804 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
4805 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
4806 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
4808 PL_reginterp_cnt = 0;
4812 #endif /* USE_5005THREADS */
4815 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
4819 const line_t oldline = CopLINE(PL_curcop);
4825 while (av_len(paramList) >= 0) {
4826 cv = (CV*)av_shift(paramList);
4828 if (paramList == PL_beginav) {
4829 /* save PL_beginav for compiler */
4830 if (! PL_beginav_save)
4831 PL_beginav_save = newAV();
4832 av_push(PL_beginav_save, (SV*)cv);
4834 else if (paramList == PL_checkav) {
4835 /* save PL_checkav for compiler */
4836 if (! PL_checkav_save)
4837 PL_checkav_save = newAV();
4838 av_push(PL_checkav_save, (SV*)cv);
4848 (void)SvPV_const(atsv, len);
4850 PL_curcop = &PL_compiling;
4851 CopLINE_set(PL_curcop, oldline);
4852 if (paramList == PL_beginav)
4853 sv_catpv(atsv, "BEGIN failed--compilation aborted");
4855 Perl_sv_catpvf(aTHX_ atsv,
4856 "%s failed--call queue aborted",
4857 paramList == PL_checkav ? "CHECK"
4858 : paramList == PL_initav ? "INIT"
4860 while (PL_scopestack_ix > oldscope)
4863 Perl_croak(aTHX_ "%"SVf"", atsv);
4870 /* my_exit() was called */
4871 while (PL_scopestack_ix > oldscope)
4874 PL_curstash = PL_defstash;
4875 PL_curcop = &PL_compiling;
4876 CopLINE_set(PL_curcop, oldline);
4878 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
4879 if (paramList == PL_beginav)
4880 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
4882 Perl_croak(aTHX_ "%s failed--call queue aborted",
4883 paramList == PL_checkav ? "CHECK"
4884 : paramList == PL_initav ? "INIT"
4891 PL_curcop = &PL_compiling;
4892 CopLINE_set(PL_curcop, oldline);
4895 PerlIO_printf(Perl_error_log, "panic: restartop\n");
4904 S_call_list_body(pTHX_ CV *cv)
4906 PUSHMARK(PL_stack_sp);
4907 call_sv((SV*)cv, G_EVAL|G_DISCARD);
4912 Perl_my_exit(pTHX_ U32 status)
4914 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
4915 thr, (unsigned long) status));
4924 STATUS_NATIVE_SET(status);
4931 Perl_my_failure_exit(pTHX)
4934 if (vaxc$errno & 1) {
4935 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
4936 STATUS_NATIVE_SET(44);
4939 if (!vaxc$errno) /* unlikely */
4940 STATUS_NATIVE_SET(44);
4942 STATUS_NATIVE_SET(vaxc$errno);
4947 STATUS_UNIX_SET(errno);
4949 exitstatus = STATUS_UNIX >> 8;
4950 if (exitstatus & 255)
4951 STATUS_UNIX_SET(exitstatus);
4953 STATUS_UNIX_SET(255);
4960 S_my_exit_jump(pTHX)
4963 register PERL_CONTEXT *cx;
4968 SvREFCNT_dec(PL_e_script);
4969 PL_e_script = Nullsv;
4972 POPSTACK_TO(PL_mainstack);
4973 if (cxstack_ix >= 0) {
4976 POPBLOCK(cx,PL_curpm);
4984 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen)
4990 p = SvPVX_const(PL_e_script);
4991 nl = strchr(p, '\n');
4992 nl = (nl) ? nl+1 : SvEND(PL_e_script);
4994 filter_del(read_e_script);
4997 sv_catpvn(buf_sv, p, nl-p);
4998 sv_chop(PL_e_script, nl);
5004 * c-indentation-style: bsd
5006 * indent-tabs-mode: t
5009 * ex: set ts=8 sts=4 sw=4 noet: