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perl5db.pl POD cleanup
[perl5.git] / perl.c
CommitLineData
a0d0e21e
LW		 1/* perl.c
2 *
4bb101f2 3 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999,
b5f8cc5c 4 * 2000, 2001, 2002, 2003, 2004, by Larry Wall and others
a687059c 5 *
352d5a3a
LW		 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.
a687059c 8 *
8d063cd8
LW		 9 */
10
a0d0e21e
LW		 11/*
12 * "A ship then new they built for him/of mithril and of elven glass" --Bilbo
13 */
45d8adaa 14
166f8a29
DM		 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()
ddfa107c 18 * function of the interpreter; that can be found in perlmain.c
166f8a29
DM		 19 */
20
ae3f3efd
PS		 21/* PSz 12 Nov 03
22 *
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.
26 *
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.
32 *
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.
38 *
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?)
42 *
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).
45 *
46 * References:
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
55 * CVE candidate:
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
62 *
63Paul Szabo - psz@maths.usyd.edu.au http://www.maths.usyd.edu.au:8000/u/psz/
64School of Mathematics and Statistics University of Sydney 2006 Australia
65 *
66 */
67/* PSz 13 Nov 03
68 * Use truthful, neat, specific error messages.
69 * Cannot always hide the truth; security must not depend on doing so.
70 */
71
72/* PSz 18 Feb 04
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...)
78 */
79
378cc40b 80#include "EXTERN.h"
864dbfa3 81#define PERL_IN_PERL_C
378cc40b 82#include "perl.h"
e3321bb0 83#include "patchlevel.h" /* for local_patches */
378cc40b 84
011f1a1a
JH		 85#ifdef NETWARE
86#include "nwutil.h"
87char *nw_get_sitelib(const char *pl);
88#endif
89
df5cef82 90/* XXX If this causes problems, set i_unistd=undef in the hint file. */
a0d0e21e
LW		 91#ifdef I_UNISTD
92#include <unistd.h>
93#endif
a0d0e21e 94
5311654c
JH		 95#ifdef __BEOS__
96# define HZ 1000000
97#endif
98
99#ifndef HZ
100# ifdef CLK_TCK
101# define HZ CLK_TCK
102# else
103# define HZ 60
104# endif
105#endif
106
7114a2d2 107#if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
20ce7b12 108char *getenv (char *); /* Usually in <stdlib.h> */
54310121 109#endif
110
acfe0abc 111static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
0cb96387 112
a687059c
LW		 113#ifdef IAMSUID
114#ifndef DOSUID
115#define DOSUID
116#endif
ae3f3efd 117#endif /* IAMSUID */
378cc40b 118
a687059c
LW		 119#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
120#ifdef DOSUID
121#undef DOSUID
122#endif
123#endif
8d063cd8 124
3db8f154 125#if defined(USE_ITHREADS)
06d86050
GS		 126# define INIT_TLS_AND_INTERP \
127 STMT_START { \
128 if (!PL_curinterp) { \
129 PERL_SET_INTERP(my_perl); \
130 INIT_THREADS; \
131 ALLOC_THREAD_KEY; \
534825c4
GS		 132 PERL_SET_THX(my_perl); \
133 OP_REFCNT_INIT; \
7d4724a4 134 MUTEX_INIT(&PL_dollarzero_mutex); \
534825c4
GS		 135 } \
136 else { \
137 PERL_SET_THX(my_perl); \
06d86050 138 } \
06d86050 139 } STMT_END
3db8f154 140#else
06d86050
GS		 141# define INIT_TLS_AND_INTERP \
142 STMT_START { \
143 if (!PL_curinterp) { \
144 PERL_SET_INTERP(my_perl); \
145 } \
146 PERL_SET_THX(my_perl); \
147 } STMT_END
148# endif
06d86050 149
32e30700
GS		 150#ifdef PERL_IMPLICIT_SYS
151PerlInterpreter *
7766f137
GS		 152perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
153 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
32e30700
GS		 154 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
155 struct IPerlDir* ipD, struct IPerlSock* ipS,
156 struct IPerlProc* ipP)
157{
158 PerlInterpreter *my_perl;
32e30700
GS		 159 /* New() needs interpreter, so call malloc() instead */
160 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
06d86050 161 INIT_TLS_AND_INTERP;
32e30700
GS		 162 Zero(my_perl, 1, PerlInterpreter);
163 PL_Mem = ipM;
7766f137
GS		 164 PL_MemShared = ipMS;
165 PL_MemParse = ipMP;
32e30700
GS		 166 PL_Env = ipE;
167 PL_StdIO = ipStd;
168 PL_LIO = ipLIO;
169 PL_Dir = ipD;
170 PL_Sock = ipS;
171 PL_Proc = ipP;
7766f137 172
32e30700
GS		 173 return my_perl;
174}
175#else
954c1994
GS		 176
177/*
ccfc67b7
JH		 178=head1 Embedding Functions
179
954c1994
GS		 180=for apidoc perl_alloc
181
182Allocates a new Perl interpreter. See L<perlembed>.
183
184=cut
185*/
186
93a17b20 187PerlInterpreter *
cea2e8a9 188perl_alloc(void)
79072805 189{
cea2e8a9 190 PerlInterpreter *my_perl;
35d7cf2c
JH		 191#ifdef USE_5005THREADS
192 dTHX;
193#endif
79072805 194
54aff467 195 /* New() needs interpreter, so call malloc() instead */
e8ee3774 196 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 197
06d86050 198 INIT_TLS_AND_INTERP;
e90e2364 199 return ZeroD(my_perl, 1, PerlInterpreter);
79072805 200}
32e30700 201#endif /* PERL_IMPLICIT_SYS */
79072805 202
954c1994
GS		 203/*
204=for apidoc perl_construct
205
206Initializes a new Perl interpreter. See L<perlembed>.
207
208=cut
209*/
210
79072805 211void
0cb96387 212perl_construct(pTHXx)
79072805 213{
8990e307 214#ifdef MULTIPLICITY
54aff467 215 init_interp();
ac27b0f5 216 PL_perl_destruct_level = 1;
54aff467
GS		 217#else
218 if (PL_perl_destruct_level > 0)
219 init_interp();
220#endif
33f46ff6 221 /* Init the real globals (and main thread)? */
3280af22 222 if (!PL_linestr) {
14dd3ad8 223#ifdef PERL_FLEXIBLE_EXCEPTIONS
0b94c7bb 224 PL_protect = MEMBER_TO_FPTR(Perl_default_protect); /* for exceptions */
14dd3ad8 225#endif
312caa8e 226
2aea9f8a
GS		 227 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
228
3280af22
NIS		 229 PL_linestr = NEWSV(65,79);
230 sv_upgrade(PL_linestr,SVt_PVIV);
79072805 231
3280af22 232 if (!SvREADONLY(&PL_sv_undef)) {
d689ffdd
JP		 233 /* set read-only and try to insure than we wont see REFCNT==0
234 very often */
235
3280af22
NIS		 236 SvREADONLY_on(&PL_sv_undef);
237 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
79072805 238
3280af22 239 sv_setpv(&PL_sv_no,PL_No);
0309f36e
NC		 240 /* value lookup in void context - happens to have the side effect
241 of caching the numeric forms. */
242 SvIV(&PL_sv_no);
3280af22
NIS		 243 SvNV(&PL_sv_no);
244 SvREADONLY_on(&PL_sv_no);
245 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
79072805 246
3280af22 247 sv_setpv(&PL_sv_yes,PL_Yes);
0309f36e 248 SvIV(&PL_sv_yes);
3280af22
NIS		 249 SvNV(&PL_sv_yes);
250 SvREADONLY_on(&PL_sv_yes);
251 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
7996736c
MHM		 252
253 SvREADONLY_on(&PL_sv_placeholder);
254 SvREFCNT(&PL_sv_placeholder) = (~(U32)0)/2;
6e72f9df 255 }
79072805 256
cea2e8a9 257 PL_sighandlerp = Perl_sighandler;
3280af22 258 PL_pidstatus = newHV();
79072805
LW		 259 }
260
8bfdd7d9 261 PL_rs = newSVpvn("\n", 1);
dc92893f 262
cea2e8a9 263 init_stacks();
79072805 264
748a9306 265 init_ids();
3280af22 266 PL_lex_state = LEX_NOTPARSING;
a5f75d66 267
312caa8e 268 JMPENV_BOOTSTRAP;
f86702cc 269 STATUS_ALL_SUCCESS;
270
0672f40e 271 init_i18nl10n(1);
36477c24 272 SET_NUMERIC_STANDARD();
0b5b802d 273
ab821d7f 274#if defined(LOCAL_PATCH_COUNT)
3280af22 275 PL_localpatches = local_patches; /* For possible -v */
ab821d7f 276#endif
277
52853b95
GS		 278#ifdef HAVE_INTERP_INTERN
279 sys_intern_init();
280#endif
281
3a1ee7e8 282 PerlIO_init(aTHX); /* Hook to IO system */
760ac839 283
3280af22
NIS		 284 PL_fdpid = newAV(); /* for remembering popen pids by fd */
285 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
24944567 286 PL_errors = newSVpvn("",0);
48c6b404 287 sv_setpvn(PERL_DEBUG_PAD(0), "", 0); /* For regex debugging. */
1f483ca1
JH		 288 sv_setpvn(PERL_DEBUG_PAD(1), "", 0); /* ext/re needs these */
289 sv_setpvn(PERL_DEBUG_PAD(2), "", 0); /* even without DEBUGGING. */
1fcf4c12 290#ifdef USE_ITHREADS
13137afc
AB		 291 PL_regex_padav = newAV();
292 av_push(PL_regex_padav,(SV*)newAV()); /* First entry is an array of empty elements */
293 PL_regex_pad = AvARRAY(PL_regex_padav);
1fcf4c12 294#endif
e5dd39fc 295#ifdef USE_REENTRANT_API
59bd0823 296 Perl_reentrant_init(aTHX);
e5dd39fc 297#endif
3d47000e
AB		 298
299 /* Note that strtab is a rather special HV. Assumptions are made
300 about not iterating on it, and not adding tie magic to it.
301 It is properly deallocated in perl_destruct() */
302 PL_strtab = newHV();
303
3d47000e
AB		 304 HvSHAREKEYS_off(PL_strtab); /* mandatory */
305 hv_ksplit(PL_strtab, 512);
306
0631ea03
AB		 307#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
308 _dyld_lookup_and_bind
309 ("__environ", (unsigned long *) &environ_pointer, NULL);
310#endif /* environ */
311
2f42fcb0
JH		 312#ifndef PERL_MICRO
313# ifdef USE_ENVIRON_ARRAY
0631ea03 314 PL_origenviron = environ;
2f42fcb0 315# endif
0631ea03
AB		 316#endif
317
5311654c
JH		 318 /* Use sysconf(_SC_CLK_TCK) if available, if not
319 * available or if the sysconf() fails, use the HZ. */
320#if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK)
321 PL_clocktick = sysconf(_SC_CLK_TCK);
322 if (PL_clocktick <= 0)
323#endif
324 PL_clocktick = HZ;
325
081fc587
AB		 326 PL_stashcache = newHV();
327
d7aa5382
JP		 328 PL_patchlevel = newSVpv(
329 Perl_form(aTHX_ "%d.%d.%d",
330 (int)PERL_REVISION,
331 (int)PERL_VERSION,
332 (int)PERL_SUBVERSION ), 0
333 );
334
8990e307 335 ENTER;
79072805
LW		 336}
337
954c1994 338/*
62375a60
NIS		 339=for apidoc nothreadhook
340
341Stub that provides thread hook for perl_destruct when there are
342no threads.
343
344=cut
345*/
346
347int
4e9e3734 348Perl_nothreadhook(pTHX)
62375a60
NIS		 349{
350 return 0;
351}
352
353/*
954c1994
GS		 354=for apidoc perl_destruct
355
356Shuts down a Perl interpreter. See L<perlembed>.
357
358=cut
359*/
360
31d77e54 361int
0cb96387 362perl_destruct(pTHXx)
79072805 363{
7c474504 364 volatile int destruct_level; /* 0=none, 1=full, 2=full with checks */
a0d0e21e 365 HV *hv;
4d1ff10f 366#ifdef USE_5005THREADS
cea2e8a9 367 dTHX;
4d1ff10f 368#endif /* USE_5005THREADS */
8990e307 369
7766f137
GS		 370 /* wait for all pseudo-forked children to finish */
371 PERL_WAIT_FOR_CHILDREN;
372
3280af22 373 destruct_level = PL_perl_destruct_level;
4633a7c4
LW		 374#ifdef DEBUGGING
375 {
376 char *s;
155aba94 377 if ((s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL"))) {
5f05dabc 378 int i = atoi(s);
379 if (destruct_level < i)
380 destruct_level = i;
381 }
4633a7c4
LW		 382 }
383#endif
384
31d77e54
AB		 385
386 if(PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB		 387 dJMPENV;
388 int x = 0;
389
390 JMPENV_PUSH(x);
391 if (PL_endav && !PL_minus_c)
392 call_list(PL_scopestack_ix, PL_endav);
393 JMPENV_POP;
26f423df 394 }
f3faeb53 395 LEAVE;
a0d0e21e
LW		 396 FREETMPS;
397
e00b64d4 398 /* Need to flush since END blocks can produce output */
f13a2bc0 399 my_fflush_all();
e00b64d4 400
62375a60
NIS		 401 if (CALL_FPTR(PL_threadhook)(aTHX)) {
402 /* Threads hook has vetoed further cleanup */
b47cad08 403 return STATUS_NATIVE_EXPORT;
62375a60
NIS		 404 }
405
ff0cee69 406 /* We must account for everything. */
407
408 /* Destroy the main CV and syntax tree */
3280af22 409 if (PL_main_root) {
4e380990
DM		 410 /* ensure comppad/curpad to refer to main's pad */
411 if (CvPADLIST(PL_main_cv)) {
412 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
413 }
3280af22
NIS		 414 op_free(PL_main_root);
415 PL_main_root = Nullop;
a0d0e21e 416 }
3280af22
NIS		 417 PL_curcop = &PL_compiling;
418 PL_main_start = Nullop;
419 SvREFCNT_dec(PL_main_cv);
420 PL_main_cv = Nullcv;
24d3c518 421 PL_dirty = TRUE;
ff0cee69 422
13621cfb
NIS		 423 /* Tell PerlIO we are about to tear things apart in case
424 we have layers which are using resources that should
425 be cleaned up now.
426 */
427
428 PerlIO_destruct(aTHX);
429
3280af22 430 if (PL_sv_objcount) {
a0d0e21e
LW		 431 /*
432 * Try to destruct global references. We do this first so that the
433 * destructors and destructees still exist. Some sv's might remain.
434 * Non-referenced objects are on their own.
435 */
a0d0e21e 436 sv_clean_objs();
bf9cdc68 437 PL_sv_objcount = 0;
8990e307
LW		 438 }
439
5cd24f17 440 /* unhook hooks which will soon be, or use, destroyed data */
3280af22
NIS		 441 SvREFCNT_dec(PL_warnhook);
442 PL_warnhook = Nullsv;
443 SvREFCNT_dec(PL_diehook);
444 PL_diehook = Nullsv;
5cd24f17 445
4b556e6c 446 /* call exit list functions */
3280af22 447 while (PL_exitlistlen-- > 0)
acfe0abc 448 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 449
3280af22 450 Safefree(PL_exitlist);
4b556e6c 451
1c4916e5
CB		 452 PL_exitlist = NULL;
453 PL_exitlistlen = 0;
454
a0d0e21e 455 if (destruct_level == 0){
8990e307 456
a0d0e21e 457 DEBUG_P(debprofdump());
ac27b0f5 458
56a2bab7
NIS		 459#if defined(PERLIO_LAYERS)
460 /* No more IO - including error messages ! */
461 PerlIO_cleanup(aTHX);
462#endif
463
a0d0e21e 464 /* The exit() function will do everything that needs doing. */
b47cad08 465 return STATUS_NATIVE_EXPORT;
a0d0e21e 466 }
5dd60ef7 467
551a8b83 468 /* jettison our possibly duplicated environment */
4b647fb0
DM		 469 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
470 * so we certainly shouldn't free it here
471 */
2f42fcb0 472#ifndef PERL_MICRO
4b647fb0 473#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
4efc5df6
GS		 474 if (environ != PL_origenviron
475#ifdef USE_ITHREADS
476 /* only main thread can free environ[0] contents */
477 && PL_curinterp == aTHX
478#endif
479 )
480 {
551a8b83
JH		 481 I32 i;
482
483 for (i = 0; environ[i]; i++)
4b420006 484 safesysfree(environ[i]);
0631ea03 485
4b420006
JH		 486 /* Must use safesysfree() when working with environ. */
487 safesysfree(environ);
551a8b83
JH		 488
489 environ = PL_origenviron;
490 }
491#endif
2f42fcb0 492#endif /* !PERL_MICRO */
551a8b83 493
804ffa60
DM		 494 /* reset so print() ends up where we expect */
495 setdefout(Nullgv);
496
5f8cb046
DM		 497#ifdef USE_ITHREADS
498 /* the syntax tree is shared between clones
499 * so op_free(PL_main_root) only ReREFCNT_dec's
500 * REGEXPs in the parent interpreter
501 * we need to manually ReREFCNT_dec for the clones
502 */
503 {
504 I32 i = AvFILLp(PL_regex_padav) + 1;
505 SV **ary = AvARRAY(PL_regex_padav);
506
507 while (i) {
35061a7e 508 SV *resv = ary[--i];
ba89bb6e 509 REGEXP *re = INT2PTR(REGEXP *,SvIVX(resv));
35061a7e
DM		 510
511 if (SvFLAGS(resv) & SVf_BREAK) {
577e12cc 512 /* this is PL_reg_curpm, already freed
35061a7e
DM		 513 * flag is set in regexec.c:S_regtry
514 */
515 SvFLAGS(resv) &= ~SVf_BREAK;
3a1ee7e8 516 }
1cc8b4c5
AB		 517 else if(SvREPADTMP(resv)) {
518 SvREPADTMP_off(resv);
519 }
35061a7e 520 else {
5f8cb046
DM		 521 ReREFCNT_dec(re);
522 }
523 }
524 }
525 SvREFCNT_dec(PL_regex_padav);
526 PL_regex_padav = Nullav;
527 PL_regex_pad = NULL;
528#endif
529
081fc587
AB		 530 SvREFCNT_dec((SV*) PL_stashcache);
531 PL_stashcache = NULL;
532
5f05dabc 533 /* loosen bonds of global variables */
534
3280af22
NIS		 535 if(PL_rsfp) {
536 (void)PerlIO_close(PL_rsfp);
537 PL_rsfp = Nullfp;
8ebc5c01 538 }
539
540 /* Filters for program text */
3280af22
NIS		 541 SvREFCNT_dec(PL_rsfp_filters);
542 PL_rsfp_filters = Nullav;
8ebc5c01 543
544 /* switches */
3280af22
NIS		 545 PL_preprocess = FALSE;
546 PL_minus_n = FALSE;
547 PL_minus_p = FALSE;
548 PL_minus_l = FALSE;
549 PL_minus_a = FALSE;
550 PL_minus_F = FALSE;
551 PL_doswitches = FALSE;
599cee73 552 PL_dowarn = G_WARN_OFF;
3280af22
NIS		 553 PL_doextract = FALSE;
554 PL_sawampersand = FALSE; /* must save all match strings */
3280af22
NIS		 555 PL_unsafe = FALSE;
556
557 Safefree(PL_inplace);
558 PL_inplace = Nullch;
a7cb1f99 559 SvREFCNT_dec(PL_patchlevel);
3280af22
NIS		 560
561 if (PL_e_script) {
562 SvREFCNT_dec(PL_e_script);
563 PL_e_script = Nullsv;
8ebc5c01 564 }
565
bf9cdc68
RG		 566 PL_perldb = 0;
567
8ebc5c01 568 /* magical thingies */
569
7889fe52
NIS		 570 SvREFCNT_dec(PL_ofs_sv); /* $, */
571 PL_ofs_sv = Nullsv;
5f05dabc 572
7889fe52
NIS		 573 SvREFCNT_dec(PL_ors_sv); /* $\ */
574 PL_ors_sv = Nullsv;
8ebc5c01 575
3280af22
NIS		 576 SvREFCNT_dec(PL_rs); /* $/ */
577 PL_rs = Nullsv;
dc92893f 578
d33b2eba
GS		 579 PL_multiline = 0; /* $* */
580 Safefree(PL_osname); /* $^O */
581 PL_osname = Nullch;
5f05dabc 582
3280af22
NIS		 583 SvREFCNT_dec(PL_statname);
584 PL_statname = Nullsv;
585 PL_statgv = Nullgv;
5f05dabc 586
8ebc5c01 587 /* defgv, aka *_ should be taken care of elsewhere */
588
8ebc5c01 589 /* clean up after study() */
3280af22
NIS		 590 SvREFCNT_dec(PL_lastscream);
591 PL_lastscream = Nullsv;
592 Safefree(PL_screamfirst);
593 PL_screamfirst = 0;
594 Safefree(PL_screamnext);
595 PL_screamnext = 0;
8ebc5c01 596
7d5ea4e7
GS		 597 /* float buffer */
598 Safefree(PL_efloatbuf);
599 PL_efloatbuf = Nullch;
600 PL_efloatsize = 0;
601
8ebc5c01 602 /* startup and shutdown function lists */
3280af22 603 SvREFCNT_dec(PL_beginav);
5a837c8f 604 SvREFCNT_dec(PL_beginav_save);
3280af22 605 SvREFCNT_dec(PL_endav);
7d30b5c4 606 SvREFCNT_dec(PL_checkav);
ece599bd 607 SvREFCNT_dec(PL_checkav_save);
3280af22
NIS		 608 SvREFCNT_dec(PL_initav);
609 PL_beginav = Nullav;
5a837c8f 610 PL_beginav_save = Nullav;
3280af22 611 PL_endav = Nullav;
7d30b5c4 612 PL_checkav = Nullav;
ece599bd 613 PL_checkav_save = Nullav;
3280af22 614 PL_initav = Nullav;
5618dfe8 615
8ebc5c01 616 /* shortcuts just get cleared */
3280af22 617 PL_envgv = Nullgv;
3280af22
NIS		 618 PL_incgv = Nullgv;
619 PL_hintgv = Nullgv;
620 PL_errgv = Nullgv;
621 PL_argvgv = Nullgv;
622 PL_argvoutgv = Nullgv;
623 PL_stdingv = Nullgv;
bf49b057 624 PL_stderrgv = Nullgv;
3280af22
NIS		 625 PL_last_in_gv = Nullgv;
626 PL_replgv = Nullgv;
bf9cdc68
RG		 627 PL_DBgv = Nullgv;
628 PL_DBline = Nullgv;
629 PL_DBsub = Nullgv;
630 PL_DBsingle = Nullsv;
631 PL_DBtrace = Nullsv;
632 PL_DBsignal = Nullsv;
633 PL_DBassertion = Nullsv;
634 PL_DBcv = Nullcv;
635 PL_dbargs = Nullav;
5c831c24 636 PL_debstash = Nullhv;
8ebc5c01 637
7a1c5554
GS		 638 SvREFCNT_dec(PL_argvout_stack);
639 PL_argvout_stack = Nullav;
8ebc5c01 640
5c831c24
GS		 641 SvREFCNT_dec(PL_modglobal);
642 PL_modglobal = Nullhv;
643 SvREFCNT_dec(PL_preambleav);
644 PL_preambleav = Nullav;
645 SvREFCNT_dec(PL_subname);
646 PL_subname = Nullsv;
647 SvREFCNT_dec(PL_linestr);
648 PL_linestr = Nullsv;
649 SvREFCNT_dec(PL_pidstatus);
650 PL_pidstatus = Nullhv;
651 SvREFCNT_dec(PL_toptarget);
652 PL_toptarget = Nullsv;
653 SvREFCNT_dec(PL_bodytarget);
654 PL_bodytarget = Nullsv;
655 PL_formtarget = Nullsv;
656
d33b2eba 657 /* free locale stuff */
b9582b6a 658#ifdef USE_LOCALE_COLLATE
d33b2eba
GS		 659 Safefree(PL_collation_name);
660 PL_collation_name = Nullch;
b9582b6a 661#endif
d33b2eba 662
b9582b6a 663#ifdef USE_LOCALE_NUMERIC
d33b2eba
GS		 664 Safefree(PL_numeric_name);
665 PL_numeric_name = Nullch;
a453c169 666 SvREFCNT_dec(PL_numeric_radix_sv);
bf9cdc68 667 PL_numeric_radix_sv = Nullsv;
b9582b6a 668#endif
d33b2eba 669
5c831c24
GS		 670 /* clear utf8 character classes */
671 SvREFCNT_dec(PL_utf8_alnum);
672 SvREFCNT_dec(PL_utf8_alnumc);
673 SvREFCNT_dec(PL_utf8_ascii);
674 SvREFCNT_dec(PL_utf8_alpha);
675 SvREFCNT_dec(PL_utf8_space);
676 SvREFCNT_dec(PL_utf8_cntrl);
677 SvREFCNT_dec(PL_utf8_graph);
678 SvREFCNT_dec(PL_utf8_digit);
679 SvREFCNT_dec(PL_utf8_upper);
680 SvREFCNT_dec(PL_utf8_lower);
681 SvREFCNT_dec(PL_utf8_print);
682 SvREFCNT_dec(PL_utf8_punct);
683 SvREFCNT_dec(PL_utf8_xdigit);
684 SvREFCNT_dec(PL_utf8_mark);
685 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 686 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 687 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 688 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH		 689 SvREFCNT_dec(PL_utf8_idstart);
690 SvREFCNT_dec(PL_utf8_idcont);
5c831c24
GS		 691 PL_utf8_alnum = Nullsv;
692 PL_utf8_alnumc = Nullsv;
693 PL_utf8_ascii = Nullsv;
694 PL_utf8_alpha = Nullsv;
695 PL_utf8_space = Nullsv;
696 PL_utf8_cntrl = Nullsv;
697 PL_utf8_graph = Nullsv;
698 PL_utf8_digit = Nullsv;
699 PL_utf8_upper = Nullsv;
700 PL_utf8_lower = Nullsv;
701 PL_utf8_print = Nullsv;
702 PL_utf8_punct = Nullsv;
703 PL_utf8_xdigit = Nullsv;
704 PL_utf8_mark = Nullsv;
705 PL_utf8_toupper = Nullsv;
706 PL_utf8_totitle = Nullsv;
707 PL_utf8_tolower = Nullsv;
b4e400f9 708 PL_utf8_tofold = Nullsv;
82686b01
JH		 709 PL_utf8_idstart = Nullsv;
710 PL_utf8_idcont = Nullsv;
5c831c24 711
971a9dd3
GS		 712 if (!specialWARN(PL_compiling.cop_warnings))
713 SvREFCNT_dec(PL_compiling.cop_warnings);
5c831c24 714 PL_compiling.cop_warnings = Nullsv;
ac27b0f5
NIS		 715 if (!specialCopIO(PL_compiling.cop_io))
716 SvREFCNT_dec(PL_compiling.cop_io);
717 PL_compiling.cop_io = Nullsv;
05ec9bb3
NIS		 718 CopFILE_free(&PL_compiling);
719 CopSTASH_free(&PL_compiling);
5c831c24 720
a0d0e21e 721 /* Prepare to destruct main symbol table. */
5f05dabc 722
3280af22
NIS		 723 hv = PL_defstash;
724 PL_defstash = 0;
a0d0e21e 725 SvREFCNT_dec(hv);
5c831c24
GS		 726 SvREFCNT_dec(PL_curstname);
727 PL_curstname = Nullsv;
a0d0e21e 728
5a844595
GS		 729 /* clear queued errors */
730 SvREFCNT_dec(PL_errors);
731 PL_errors = Nullsv;
732
a0d0e21e 733 FREETMPS;
0453d815 734 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
3280af22 735 if (PL_scopestack_ix != 0)
9014280d 736 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
0453d815 737 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
3280af22
NIS		 738 (long)PL_scopestack_ix);
739 if (PL_savestack_ix != 0)
9014280d 740 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
0453d815 741 "Unbalanced saves: %ld more saves than restores\n",
3280af22
NIS		 742 (long)PL_savestack_ix);
743 if (PL_tmps_floor != -1)
9014280d 744 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
3280af22 745 (long)PL_tmps_floor + 1);
a0d0e21e 746 if (cxstack_ix != -1)
9014280d 747 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
ff0cee69 748 (long)cxstack_ix + 1);
a0d0e21e 749 }
8990e307
LW		 750
751 /* Now absolutely destruct everything, somehow or other, loops or no. */
d33b2eba 752 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
3280af22 753 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
5226ed68
JH		 754
755 /* the 2 is for PL_fdpid and PL_strtab */
756 while (PL_sv_count > 2 && sv_clean_all())
757 ;
758
d33b2eba
GS		 759 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
760 SvFLAGS(PL_fdpid) |= SVt_PVAV;
3280af22
NIS		 761 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
762 SvFLAGS(PL_strtab) |= SVt_PVHV;
d33b2eba 763
d4777f27
GS		 764 AvREAL_off(PL_fdpid); /* no surviving entries */
765 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
d33b2eba
GS		 766 PL_fdpid = Nullav;
767
6c644e78
GS		 768#ifdef HAVE_INTERP_INTERN
769 sys_intern_clear();
770#endif
771
6e72f9df 772 /* Destruct the global string table. */
773 {
774 /* Yell and reset the HeVAL() slots that are still holding refcounts,
775 * so that sv_free() won't fail on them.
776 */
777 I32 riter;
778 I32 max;
779 HE *hent;
780 HE **array;
781
782 riter = 0;
3280af22
NIS		 783 max = HvMAX(PL_strtab);
784 array = HvARRAY(PL_strtab);
6e72f9df 785 hent = array[0];
786 for (;;) {
0453d815 787 if (hent && ckWARN_d(WARN_INTERNAL)) {
9014280d 788 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
0453d815 789 "Unbalanced string table refcount: (%d) for \"%s\"",
6e72f9df 790 HeVAL(hent) - Nullsv, HeKEY(hent));
791 HeVAL(hent) = Nullsv;
792 hent = HeNEXT(hent);
793 }
794 if (!hent) {
795 if (++riter > max)
796 break;
797 hent = array[riter];
798 }
799 }
800 }
3280af22 801 SvREFCNT_dec(PL_strtab);
6e72f9df 802
e652bb2f 803#ifdef USE_ITHREADS
a0739874
DM		 804 /* free the pointer table used for cloning */
805 ptr_table_free(PL_ptr_table);
bf9cdc68 806 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 807#endif
a0739874 808
d33b2eba
GS		 809 /* free special SVs */
810
811 SvREFCNT(&PL_sv_yes) = 0;
812 sv_clear(&PL_sv_yes);
813 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 814 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS		 815
816 SvREFCNT(&PL_sv_no) = 0;
817 sv_clear(&PL_sv_no);
818 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 819 SvFLAGS(&PL_sv_no) = 0;
01724ea0 820
9f375a43
DM		 821 {
822 int i;
823 for (i=0; i<=2; i++) {
824 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
825 sv_clear(PERL_DEBUG_PAD(i));
826 SvANY(PERL_DEBUG_PAD(i)) = NULL;
827 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
828 }
829 }
830
0453d815 831 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 832 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 833
eba0f806
DM		 834#ifdef DEBUG_LEAKING_SCALARS
835 if (PL_sv_count != 0) {
836 SV* sva;
837 SV* sv;
838 register SV* svend;
839
840 for (sva = PL_sv_arenaroot; sva; sva = (SV*)SvANY(sva)) {
841 svend = &sva[SvREFCNT(sva)];
842 for (sv = sva + 1; sv < svend; ++sv) {
843 if (SvTYPE(sv) != SVTYPEMASK) {
a548cda8
DM		 844 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
845 " flags=0x08%"UVxf
846 " refcnt=%"UVuf pTHX__FORMAT "\n",
847 sv, sv->sv_flags, sv->sv_refcnt pTHX__VALUE);
eba0f806
DM		 848 }
849 }
850 }
851 }
852#endif
bf9cdc68 853 PL_sv_count = 0;
eba0f806
DM		 854
855
56a2bab7 856#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS		 857 /* No more IO - including error messages ! */
858 PerlIO_cleanup(aTHX);
859#endif
860
9f4bd222
NIS		 861 /* sv_undef needs to stay immortal until after PerlIO_cleanup
862 as currently layers use it rather than Nullsv as a marker
863 for no arg - and will try and SvREFCNT_dec it.
864 */
865 SvREFCNT(&PL_sv_undef) = 0;
866 SvREADONLY_off(&PL_sv_undef);
867
3280af22 868 Safefree(PL_origfilename);
bf9cdc68 869 PL_origfilename = Nullch;
3280af22 870 Safefree(PL_reg_start_tmp);
bf9cdc68
RG		 871 PL_reg_start_tmp = (char**)NULL;
872 PL_reg_start_tmpl = 0;
5c5e4c24
IZ		 873 if (PL_reg_curpm)
874 Safefree(PL_reg_curpm);
82ba1be6 875 Safefree(PL_reg_poscache);
dd28f7bb 876 free_tied_hv_pool();
3280af22 877 Safefree(PL_op_mask);
cf36064f 878 Safefree(PL_psig_ptr);
bf9cdc68 879 PL_psig_ptr = (SV**)NULL;
cf36064f 880 Safefree(PL_psig_name);
bf9cdc68 881 PL_psig_name = (SV**)NULL;
2c2666fc 882 Safefree(PL_bitcount);
bf9cdc68 883 PL_bitcount = Nullch;
ce08f86c 884 Safefree(PL_psig_pend);
bf9cdc68
RG		 885 PL_psig_pend = (int*)NULL;
886 PL_formfeed = Nullsv;
887 Safefree(PL_ofmt);
888 PL_ofmt = Nullch;
6e72f9df 889 nuke_stacks();
bf9cdc68
RG		 890 PL_tainting = FALSE;
891 PL_taint_warn = FALSE;
3280af22 892 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
bf9cdc68 893 PL_debug = 0;
ac27b0f5 894
a0d0e21e 895 DEBUG_P(debprofdump());
d33b2eba 896
e5dd39fc 897#ifdef USE_REENTRANT_API
10bc17b6 898 Perl_reentrant_free(aTHX);
e5dd39fc
AB		 899#endif
900
612f20c3
GS		 901 sv_free_arenas();
902
fc36a67e 903 /* As the absolutely last thing, free the non-arena SV for mess() */
904
3280af22 905 if (PL_mess_sv) {
9c63abab
GS		 906 /* it could have accumulated taint magic */
907 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
908 MAGIC* mg;
909 MAGIC* moremagic;
910 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
911 moremagic = mg->mg_moremagic;
14befaf4
DM		 912 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
913 && mg->mg_len >= 0)
9c63abab
GS		 914 Safefree(mg->mg_ptr);
915 Safefree(mg);
916 }
917 }
fc36a67e 918 /* we know that type >= SVt_PV */
0c34ef67 919 SvOOK_off(PL_mess_sv);
3280af22
NIS		 920 Safefree(SvPVX(PL_mess_sv));
921 Safefree(SvANY(PL_mess_sv));
922 Safefree(PL_mess_sv);
923 PL_mess_sv = Nullsv;
fc36a67e 924 }
31d77e54 925 return STATUS_NATIVE_EXPORT;
79072805
LW		 926}
927
954c1994
GS		 928/*
929=for apidoc perl_free
930
931Releases a Perl interpreter. See L<perlembed>.
932
933=cut
934*/
935
79072805 936void
0cb96387 937perl_free(pTHXx)
79072805 938{
acfe0abc 939#if defined(WIN32) || defined(NETWARE)
ce3e5b80 940# if defined(PERL_IMPLICIT_SYS)
acfe0abc
GS		 941# ifdef NETWARE
942 void *host = nw_internal_host;
943# else
944 void *host = w32_internal_host;
945# endif
ce3e5b80 946 PerlMem_free(aTHXx);
acfe0abc 947# ifdef NETWARE
011f1a1a 948 nw_delete_internal_host(host);
acfe0abc
GS		 949# else
950 win32_delete_internal_host(host);
951# endif
1c0ca838
GS		 952# else
953 PerlMem_free(aTHXx);
954# endif
acfe0abc
GS		 955#else
956 PerlMem_free(aTHXx);
76e3520e 957#endif
79072805
LW		 958}
959
4b556e6c 960void
864dbfa3 961Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 962{
3280af22
NIS		 963 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
964 PL_exitlist[PL_exitlistlen].fn = fn;
965 PL_exitlist[PL_exitlistlen].ptr = ptr;
966 ++PL_exitlistlen;
4b556e6c
JD		 967}
968
954c1994
GS		 969/*
970=for apidoc perl_parse
971
972Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
973
974=cut
975*/
976
79072805 977int
0cb96387 978perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 979{
6224f72b 980 I32 oldscope;
6224f72b 981 int ret;
db36c5a1 982 dJMPENV;
4d1ff10f 983#ifdef USE_5005THREADS
cea2e8a9
GS		 984 dTHX;
985#endif
8d063cd8 986
a687059c
LW		 987#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
988#ifdef IAMSUID
989#undef IAMSUID
cea2e8a9 990 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
a687059c 991setuid perl scripts securely.\n");
ae3f3efd 992#endif /* IAMSUID */
a687059c
LW		 993#endif
994
b0891165
JH		 995#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
996 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
103dd899 997 * This MUST be done before any hash stores or fetches take place.
008fb0c0
NC		 998 * If you set PL_rehash_seed (and assumedly also PL_rehash_seed_set)
999 * yourself, it is your responsibility to provide a good random seed!
830b38bd 1000 * You can also define PERL_HASH_SEED in compile time, see hv.h. */
008fb0c0
NC		 1001 if (!PL_rehash_seed_set)
1002 PL_rehash_seed = get_hash_seed();
b0891165 1003 {
bed60192
JH		 1004 char *s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
1005
1006 if (s) {
1007 int i = atoi(s);
1008
1009 if (i == 1)
1010 PerlIO_printf(Perl_debug_log, "HASH_SEED = %"UVuf"\n",
008fb0c0 1011 PL_rehash_seed);
bed60192 1012 }
b0891165
JH		 1013 }
1014#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1015
3280af22 1016 PL_origargc = argc;
e2975953 1017 PL_origargv = argv;
a0d0e21e 1018
54bfe034 1019 {
3cb9023d
JH		 1020 /* Set PL_origalen be the sum of the contiguous argv[]
1021 * elements plus the size of the env in case that it is
e9137a8e 1022 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH		 1023 * as the maximum modifiable length of $0. In the worst case
1024 * the area we are able to modify is limited to the size of
43c32782 1025 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1026 * --jhi */
84458fbf 1027 char *s = NULL;
54bfe034 1028 int i;
7d8e7db3
JH		 1029 UV mask =
1030 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
43c32782
JH		 1031 /* Do the mask check only if the args seem like aligned. */
1032 UV aligned =
1033 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1034
1035 /* See if all the arguments are contiguous in memory. Note
1036 * that 'contiguous' is a loose term because some platforms
1037 * align the argv[] and the envp[]. If the arguments look
1038 * like non-aligned, assume that they are 'strictly' or
1039 * 'traditionally' contiguous. If the arguments look like
1040 * aligned, we just check that they are within aligned
1041 * PTRSIZE bytes. As long as no system has something bizarre
1042 * like the argv[] interleaved with some other data, we are
1043 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH		 1044 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1045 while (*s) s++;
1046 for (i = 1; i < PL_origargc; i++) {
1047 if ((PL_origargv[i] == s + 1
43c32782 1048#ifdef OS2
c8941eeb 1049 || PL_origargv[i] == s + 2
43c32782 1050#endif
c8941eeb
JH		 1051 )
1052 ||
1053 (aligned &&
1054 (PL_origargv[i] > s &&
1055 PL_origargv[i] <=
1056 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1057 )
1058 {
1059 s = PL_origargv[i];
1060 while (*s) s++;
1061 }
1062 else
1063 break;
54bfe034 1064 }
54bfe034 1065 }
3cb9023d 1066 /* Can we grab env area too to be used as the area for $0? */
43c32782
JH		 1067 if (PL_origenviron) {
1068 if ((PL_origenviron[0] == s + 1
1069#ifdef OS2
1070 || (PL_origenviron[0] == s + 9 && (s += 8))
1071#endif
1072 )
1073 ||
1074 (aligned &&
1075 (PL_origenviron[0] > s &&
1076 PL_origenviron[0] <=
1077 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1078 )
1079 {
1080#ifndef OS2
1081 s = PL_origenviron[0];
1082 while (*s) s++;
1083#endif
1084 my_setenv("NoNe SuCh", Nullch);
1085 /* Force copy of environment. */
1086 for (i = 1; PL_origenviron[i]; i++) {
1087 if (PL_origenviron[i] == s + 1
1088 ||
1089 (aligned &&
1090 (PL_origenviron[i] > s &&
1091 PL_origenviron[i] <=
1092 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1093 )
1094 {
1095 s = PL_origenviron[i];
1096 while (*s) s++;
1097 }
1098 else
1099 break;
54bfe034 1100 }
43c32782 1101 }
54bfe034 1102 }
284e1220 1103 PL_origalen = s - PL_origargv[0] + 1;
54bfe034
JH		 1104 }
1105
3280af22 1106 if (PL_do_undump) {
a0d0e21e
LW		 1107
1108 /* Come here if running an undumped a.out. */
1109
3280af22
NIS		 1110 PL_origfilename = savepv(argv[0]);
1111 PL_do_undump = FALSE;
a0d0e21e 1112 cxstack_ix = -1; /* start label stack again */
748a9306 1113 init_ids();
a0d0e21e
LW		 1114 init_postdump_symbols(argc,argv,env);
1115 return 0;
1116 }
1117
3280af22 1118 if (PL_main_root) {
3280af22
NIS		 1119 op_free(PL_main_root);
1120 PL_main_root = Nullop;
ff0cee69 1121 }
3280af22
NIS		 1122 PL_main_start = Nullop;
1123 SvREFCNT_dec(PL_main_cv);
1124 PL_main_cv = Nullcv;
79072805 1125
3280af22
NIS		 1126 time(&PL_basetime);
1127 oldscope = PL_scopestack_ix;
599cee73 1128 PL_dowarn = G_WARN_OFF;
f86702cc 1129
14dd3ad8
GS		 1130#ifdef PERL_FLEXIBLE_EXCEPTIONS
1131 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
1132#else
1133 JMPENV_PUSH(ret);
1134#endif
6224f72b 1135 switch (ret) {
312caa8e 1136 case 0:
14dd3ad8
GS		 1137#ifndef PERL_FLEXIBLE_EXCEPTIONS
1138 parse_body(env,xsinit);
1139#endif
7d30b5c4
GS		 1140 if (PL_checkav)
1141 call_list(oldscope, PL_checkav);
14dd3ad8
GS		 1142 ret = 0;
1143 break;
6224f72b
GS		 1144 case 1:
1145 STATUS_ALL_FAILURE;
1146 /* FALL THROUGH */
1147 case 2:
1148 /* my_exit() was called */
3280af22 1149 while (PL_scopestack_ix > oldscope)
6224f72b
GS		 1150 LEAVE;
1151 FREETMPS;
3280af22 1152 PL_curstash = PL_defstash;
7d30b5c4
GS		 1153 if (PL_checkav)
1154 call_list(oldscope, PL_checkav);
14dd3ad8
GS		 1155 ret = STATUS_NATIVE_EXPORT;
1156 break;
6224f72b 1157 case 3:
bf49b057 1158 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS		 1159 ret = 1;
1160 break;
6224f72b 1161 }
14dd3ad8
GS		 1162 JMPENV_POP;
1163 return ret;
1164}
1165
1166#ifdef PERL_FLEXIBLE_EXCEPTIONS
1167STATIC void *
1168S_vparse_body(pTHX_ va_list args)
1169{
1170 char **env = va_arg(args, char**);
1171 XSINIT_t xsinit = va_arg(args, XSINIT_t);
1172
1173 return parse_body(env, xsinit);
312caa8e 1174}
14dd3ad8 1175#endif
312caa8e
CS		 1176
1177STATIC void *
14dd3ad8 1178S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1179{
312caa8e
CS		 1180 int argc = PL_origargc;
1181 char **argv = PL_origargv;
312caa8e 1182 char *scriptname = NULL;
312caa8e
CS		 1183 VOL bool dosearch = FALSE;
1184 char *validarg = "";
312caa8e
CS		 1185 register SV *sv;
1186 register char *s;
cf756827 1187 char *cddir = Nullch;
312caa8e 1188
ae3f3efd
PS		 1189 PL_fdscript = -1;
1190 PL_suidscript = -1;
3280af22 1191 sv_setpvn(PL_linestr,"",0);
79cb57f6 1192 sv = newSVpvn("",0); /* first used for -I flags */
6224f72b
GS		 1193 SAVEFREESV(sv);
1194 init_main_stash();
54310121 1195
6224f72b
GS		 1196 for (argc--,argv++; argc > 0; argc--,argv++) {
1197 if (argv[0][0] != '-' || !argv[0][1])
1198 break;
1199#ifdef DOSUID
1200 if (*validarg)
1201 validarg = " PHOOEY ";
1202 else
1203 validarg = argv[0];
ae3f3efd
PS		 1204 /*
1205 * Can we rely on the kernel to start scripts with argv[1] set to
1206 * contain all #! line switches (the whole line)? (argv[0] is set to
1207 * the interpreter name, argv[2] to the script name; argv[3] and
1208 * above may contain other arguments.)
1209 */
13281fa4 1210#endif
6224f72b
GS		 1211 s = argv[0]+1;
1212 reswitch:
1213 switch (*s) {
729a02f2 1214 case 'C':
1d5472a9
GS		 1215#ifndef PERL_STRICT_CR
1216 case '\r':
1217#endif
6224f72b
GS		 1218 case ' ':
1219 case '0':
1220 case 'F':
1221 case 'a':
1222 case 'c':
1223 case 'd':
1224 case 'D':
1225 case 'h':
1226 case 'i':
1227 case 'l':
1228 case 'M':
1229 case 'm':
1230 case 'n':
1231 case 'p':
1232 case 's':
1233 case 'u':
1234 case 'U':
1235 case 'v':
599cee73
PM		 1236 case 'W':
1237 case 'X':
6224f72b 1238 case 'w':
06492da6 1239 case 'A':
155aba94 1240 if ((s = moreswitches(s)))
6224f72b
GS		 1241 goto reswitch;
1242 break;
33b78306 1243
1dbad523 1244 case 't':
22f7c9c9 1245 CHECK_MALLOC_TOO_LATE_FOR('t');
317ea90d
MS		 1246 if( !PL_tainting ) {
1247 PL_taint_warn = TRUE;
1248 PL_tainting = TRUE;
1249 }
1250 s++;
1251 goto reswitch;
6224f72b 1252 case 'T':
22f7c9c9 1253 CHECK_MALLOC_TOO_LATE_FOR('T');
3280af22 1254 PL_tainting = TRUE;
317ea90d 1255 PL_taint_warn = FALSE;
6224f72b
GS		 1256 s++;
1257 goto reswitch;
f86702cc 1258
6224f72b 1259 case 'e':
bf4acbe4
GS		 1260#ifdef MACOS_TRADITIONAL
1261 /* ignore -e for Dev:Pseudo argument */
1262 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
e55ac0fa 1263 break;
bf4acbe4 1264#endif
ae3f3efd 1265 forbid_setid("-e");
3280af22 1266 if (!PL_e_script) {
79cb57f6 1267 PL_e_script = newSVpvn("",0);
0cb96387 1268 filter_add(read_e_script, NULL);
6224f72b
GS		 1269 }
1270 if (*++s)
3280af22 1271 sv_catpv(PL_e_script, s);
6224f72b 1272 else if (argv[1]) {
3280af22 1273 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS		 1274 argc--,argv++;
1275 }
1276 else
cea2e8a9 1277 Perl_croak(aTHX_ "No code specified for -e");
3280af22 1278 sv_catpv(PL_e_script, "\n");
6224f72b 1279 break;
afe37c7d 1280
6224f72b
GS		 1281 case 'I': /* -I handled both here and in moreswitches() */
1282 forbid_setid("-I");
1283 if (!*++s && (s=argv[1]) != Nullch) {
1284 argc--,argv++;
1285 }
6224f72b 1286 if (s && *s) {
0df16ed7
GS		 1287 char *p;
1288 STRLEN len = strlen(s);
1289 p = savepvn(s, len);
574c798a 1290 incpush(p, TRUE, TRUE, FALSE);
0df16ed7
GS		 1291 sv_catpvn(sv, "-I", 2);
1292 sv_catpvn(sv, p, len);
1293 sv_catpvn(sv, " ", 1);
6224f72b 1294 Safefree(p);
0df16ed7
GS		 1295 }
1296 else
a67e862a 1297 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b
GS		 1298 break;
1299 case 'P':
1300 forbid_setid("-P");
3280af22 1301 PL_preprocess = TRUE;
6224f72b
GS		 1302 s++;
1303 goto reswitch;
1304 case 'S':
1305 forbid_setid("-S");
1306 dosearch = TRUE;
1307 s++;
1308 goto reswitch;
1309 case 'V':
3280af22
NIS		 1310 if (!PL_preambleav)
1311 PL_preambleav = newAV();
1312 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
6224f72b 1313 if (*++s != ':') {
3280af22 1314 PL_Sv = newSVpv("print myconfig();",0);
6224f72b 1315#ifdef VMS
6b88bc9c 1316 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
6224f72b 1317#else
3280af22 1318 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
6224f72b 1319#endif
3280af22 1320 sv_catpv(PL_Sv,"\" Compile-time options:");
6224f72b 1321# ifdef DEBUGGING
3280af22 1322 sv_catpv(PL_Sv," DEBUGGING");
6224f72b 1323# endif
6224f72b 1324# ifdef MULTIPLICITY
8f872242 1325 sv_catpv(PL_Sv," MULTIPLICITY");
6224f72b 1326# endif
4d1ff10f
AB		 1327# ifdef USE_5005THREADS
1328 sv_catpv(PL_Sv," USE_5005THREADS");
b363f7ed 1329# endif
ac5e8965
JH		 1330# ifdef USE_ITHREADS
1331 sv_catpv(PL_Sv," USE_ITHREADS");
1332# endif
10cc9d2a
JH		 1333# ifdef USE_64_BIT_INT
1334 sv_catpv(PL_Sv," USE_64_BIT_INT");
1335# endif
1336# ifdef USE_64_BIT_ALL
1337 sv_catpv(PL_Sv," USE_64_BIT_ALL");
ac5e8965
JH		 1338# endif
1339# ifdef USE_LONG_DOUBLE
1340 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1341# endif
53430762
JH		 1342# ifdef USE_LARGE_FILES
1343 sv_catpv(PL_Sv," USE_LARGE_FILES");
1344# endif
ac5e8965
JH		 1345# ifdef USE_SOCKS
1346 sv_catpv(PL_Sv," USE_SOCKS");
1347# endif
b363f7ed
GS		 1348# ifdef PERL_IMPLICIT_CONTEXT
1349 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1350# endif
1351# ifdef PERL_IMPLICIT_SYS
1352 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1353# endif
3280af22 1354 sv_catpv(PL_Sv,"\\n\",");
b363f7ed 1355
6224f72b
GS		 1356#if defined(LOCAL_PATCH_COUNT)
1357 if (LOCAL_PATCH_COUNT > 0) {
1358 int i;
3280af22 1359 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
6224f72b 1360 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
3280af22 1361 if (PL_localpatches[i])
acb03d05
AB		 1362 Perl_sv_catpvf(aTHX_ PL_Sv,"q%c\t%s\n%c,",
1363 0, PL_localpatches[i], 0);
6224f72b
GS		 1364 }
1365 }
1366#endif
cea2e8a9 1367 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
6224f72b
GS		 1368#ifdef __DATE__
1369# ifdef __TIME__
cea2e8a9 1370 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
6224f72b 1371# else
cea2e8a9 1372 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
6224f72b
GS		 1373# endif
1374#endif
3280af22 1375 sv_catpv(PL_Sv, "; \
6224f72b 1376$\"=\"\\n \"; \
69fcd688
JH		 1377@env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; ");
1378#ifdef __CYGWIN__
1379 sv_catpv(PL_Sv,"\
1380push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
1381#endif
1382 sv_catpv(PL_Sv, "\
6224f72b
GS		 1383print \" \\%ENV:\\n @env\\n\" if @env; \
1384print \" \\@INC:\\n @INC\\n\";");
1385 }
1386 else {
3280af22
NIS		 1387 PL_Sv = newSVpv("config_vars(qw(",0);
1388 sv_catpv(PL_Sv, ++s);
1389 sv_catpv(PL_Sv, "))");
6224f72b
GS		 1390 s += strlen(s);
1391 }
3280af22 1392 av_push(PL_preambleav, PL_Sv);
6224f72b
GS		 1393 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1394 goto reswitch;
1395 case 'x':
3280af22 1396 PL_doextract = TRUE;
6224f72b
GS		 1397 s++;
1398 if (*s)
f4c556ac 1399 cddir = s;
6224f72b
GS		 1400 break;
1401 case 0:
1402 break;
1403 case '-':
1404 if (!*++s || isSPACE(*s)) {
1405 argc--,argv++;
1406 goto switch_end;
1407 }
1408 /* catch use of gnu style long options */
1409 if (strEQ(s, "version")) {
1410 s = "v";
1411 goto reswitch;
1412 }
1413 if (strEQ(s, "help")) {
1414 s = "h";
1415 goto reswitch;
1416 }
1417 s--;
1418 /* FALL THROUGH */
1419 default:
cea2e8a9 1420 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW		 1421 }
1422 }
6224f72b 1423 switch_end:
54310121 1424
f675dbe5
CB		 1425 if (
1426#ifndef SECURE_INTERNAL_GETENV
1427 !PL_tainting &&
1428#endif
cf756827 1429 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1430 {
cf756827 1431 char *popt = s;
74288ac8
GS		 1432 while (isSPACE(*s))
1433 s++;
317ea90d 1434 if (*s == '-' && *(s+1) == 'T') {
22f7c9c9 1435 CHECK_MALLOC_TOO_LATE_FOR('T');
74288ac8 1436 PL_tainting = TRUE;
317ea90d
MS		 1437 PL_taint_warn = FALSE;
1438 }
74288ac8 1439 else {
cf756827 1440 char *popt_copy = Nullch;
74288ac8 1441 while (s && *s) {
4ea8f8fb 1442 char *d;
74288ac8
GS		 1443 while (isSPACE(*s))
1444 s++;
1445 if (*s == '-') {
1446 s++;
1447 if (isSPACE(*s))
1448 continue;
1449 }
4ea8f8fb 1450 d = s;
74288ac8
GS		 1451 if (!*s)
1452 break;
06492da6 1453 if (!strchr("DIMUdmtwA", *s))
cea2e8a9 1454 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS		 1455 while (++s && *s) {
1456 if (isSPACE(*s)) {
cf756827
GS		 1457 if (!popt_copy) {
1458 popt_copy = SvPVX(sv_2mortal(newSVpv(popt,0)));
1459 s = popt_copy + (s - popt);
1460 d = popt_copy + (d - popt);
1461 }
4ea8f8fb
MS		 1462 *s++ = '\0';
1463 break;
1464 }
1465 }
1c4db469 1466 if (*d == 't') {
317ea90d
MS		 1467 if( !PL_tainting ) {
1468 PL_taint_warn = TRUE;
1469 PL_tainting = TRUE;
1470 }
1c4db469
RGS		 1471 } else {
1472 moreswitches(d);
1473 }
6224f72b 1474 }
6224f72b
GS		 1475 }
1476 }
a0d0e21e 1477
317ea90d
MS		 1478 if (PL_taint_warn && PL_dowarn != G_WARN_ALL_OFF) {
1479 PL_compiling.cop_warnings = newSVpvn(WARN_TAINTstring, WARNsize);
1480 }
1481
6224f72b
GS		 1482 if (!scriptname)
1483 scriptname = argv[0];
3280af22 1484 if (PL_e_script) {
6224f72b
GS		 1485 argc++,argv--;
1486 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1487 }
1488 else if (scriptname == Nullch) {
1489#ifdef MSDOS
1490 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1491 moreswitches("h");
1492#endif
1493 scriptname = "-";
1494 }
1495
1496 init_perllib();
1497
c5cccb17 1498 open_script(scriptname,dosearch,sv);
6224f72b 1499
c5cccb17 1500 validate_suid(validarg, scriptname);
6224f72b 1501
64ca3a65 1502#ifndef PERL_MICRO
0b5b802d
GS		 1503#if defined(SIGCHLD) || defined(SIGCLD)
1504 {
1505#ifndef SIGCHLD
1506# define SIGCHLD SIGCLD
1507#endif
1508 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1509 if (sigstate == SIG_IGN) {
1510 if (ckWARN(WARN_SIGNAL))
9014280d 1511 Perl_warner(aTHX_ packWARN(WARN_SIGNAL),
0b5b802d
GS		 1512 "Can't ignore signal CHLD, forcing to default");
1513 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1514 }
1515 }
1516#endif
64ca3a65 1517#endif
0b5b802d 1518
bf4acbe4
GS		 1519#ifdef MACOS_TRADITIONAL
1520 if (PL_doextract || gMacPerl_AlwaysExtract) {
1521#else
f4c556ac 1522 if (PL_doextract) {
bf4acbe4 1523#endif
6224f72b 1524 find_beginning();
f4c556ac
GS		 1525 if (cddir && PerlDir_chdir(cddir) < 0)
1526 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1527
1528 }
6224f72b 1529
3280af22
NIS		 1530 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1531 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1532 CvUNIQUE_on(PL_compcv);
1533
dd2155a4 1534 CvPADLIST(PL_compcv) = pad_new(0);
4d1ff10f 1535#ifdef USE_5005THREADS
533c011a
NIS		 1536 CvOWNER(PL_compcv) = 0;
1537 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1538 MUTEX_INIT(CvMUTEXP(PL_compcv));
4d1ff10f 1539#endif /* USE_5005THREADS */
6224f72b 1540
0c4f7ff0 1541 boot_core_PerlIO();
6224f72b 1542 boot_core_UNIVERSAL();
09bef843 1543 boot_core_xsutils();
6224f72b
GS		 1544
1545 if (xsinit)
acfe0abc 1546 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 1547#ifndef PERL_MICRO
ed79a026 1548#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
c5be433b 1549 init_os_extras();
6224f72b 1550#endif
64ca3a65 1551#endif
6224f72b 1552
29209bc5 1553#ifdef USE_SOCKS
1b9c9cf5
DH		 1554# ifdef HAS_SOCKS5_INIT
1555 socks5_init(argv[0]);
1556# else
29209bc5 1557 SOCKSinit(argv[0]);
1b9c9cf5 1558# endif
ac27b0f5 1559#endif
29209bc5 1560
6224f72b
GS		 1561 init_predump_symbols();
1562 /* init_postdump_symbols not currently designed to be called */
1563 /* more than once (ENV isn't cleared first, for example) */
1564 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 1565 if (!PL_do_undump)
6224f72b
GS		 1566 init_postdump_symbols(argc,argv,env);
1567
a05d7ebb
JH		 1568 /* PL_unicode is turned on by -C or by $ENV{PERL_UNICODE}.
1569 * PL_utf8locale is conditionally turned on by
085a54d9 1570 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 1571 * look like the user wants to use UTF-8. */
06e66572
JH		 1572 if (PL_unicode) {
1573 /* Requires init_predump_symbols(). */
a05d7ebb 1574 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH		 1575 IO* io;
1576 PerlIO* fp;
1577 SV* sv;
1578
a05d7ebb 1579 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 1580 * and the default open disciplines. */
a05d7ebb
JH		 1581 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
1582 PL_stdingv && (io = GvIO(PL_stdingv)) &&
1583 (fp = IoIFP(io)))
1584 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
1585 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
1586 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
1587 (fp = IoOFP(io)))
1588 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
1589 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
1590 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
1591 (fp = IoOFP(io)))
1592 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
1593 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
1594 (sv = GvSV(gv_fetchpv("\017PEN", TRUE, SVt_PV)))) {
1595 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
1596 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
1597 if (in) {
1598 if (out)
1599 sv_setpvn(sv, ":utf8\0:utf8", 11);
1600 else
1601 sv_setpvn(sv, ":utf8\0", 6);
1602 }
1603 else if (out)
1604 sv_setpvn(sv, "\0:utf8", 6);
1605 SvSETMAGIC(sv);
1606 }
b310b053
JH		 1607 }
1608 }
1609
4ffa73a3
JH		 1610 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
1611 if (strEQ(s, "unsafe"))
1612 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
1613 else if (strEQ(s, "safe"))
1614 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
1615 else
1616 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
1617 }
1618
6224f72b
GS		 1619 init_lexer();
1620
1621 /* now parse the script */
1622
93189314 1623 SETERRNO(0,SS_NORMAL);
3280af22 1624 PL_error_count = 0;
bf4acbe4
GS		 1625#ifdef MACOS_TRADITIONAL
1626 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1627 if (PL_minus_c)
1628 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1629 else {
1630 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1631 MacPerl_MPWFileName(PL_origfilename));
1632 }
1633 }
1634#else
3280af22
NIS		 1635 if (yyparse() || PL_error_count) {
1636 if (PL_minus_c)
cea2e8a9 1637 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 1638 else {
cea2e8a9 1639 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 1640 PL_origfilename);
6224f72b
GS		 1641 }
1642 }
bf4acbe4 1643#endif
57843af0 1644 CopLINE_set(PL_curcop, 0);
3280af22
NIS		 1645 PL_curstash = PL_defstash;
1646 PL_preprocess = FALSE;
1647 if (PL_e_script) {
1648 SvREFCNT_dec(PL_e_script);
1649 PL_e_script = Nullsv;
6224f72b
GS		 1650 }
1651
3280af22 1652 if (PL_do_undump)
6224f72b
GS		 1653 my_unexec();
1654
57843af0
GS		 1655 if (isWARN_ONCE) {
1656 SAVECOPFILE(PL_curcop);
1657 SAVECOPLINE(PL_curcop);
3280af22 1658 gv_check(PL_defstash);
57843af0 1659 }
6224f72b
GS		 1660
1661 LEAVE;
1662 FREETMPS;
1663
1664#ifdef MYMALLOC
1665 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1666 dump_mstats("after compilation:");
1667#endif
1668
1669 ENTER;
3280af22 1670 PL_restartop = 0;
312caa8e 1671 return NULL;
6224f72b
GS		 1672}
1673
954c1994
GS		 1674/*
1675=for apidoc perl_run
1676
1677Tells a Perl interpreter to run. See L<perlembed>.
1678
1679=cut
1680*/
1681
6224f72b 1682int
0cb96387 1683perl_run(pTHXx)
6224f72b 1684{
6224f72b 1685 I32 oldscope;
14dd3ad8 1686 int ret = 0;
db36c5a1 1687 dJMPENV;
4d1ff10f 1688#ifdef USE_5005THREADS
cea2e8a9
GS		 1689 dTHX;
1690#endif
6224f72b 1691
3280af22 1692 oldscope = PL_scopestack_ix;
96e176bf
CL		 1693#ifdef VMS
1694 VMSISH_HUSHED = 0;
1695#endif
6224f72b 1696
14dd3ad8 1697#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1698 redo_body:
14dd3ad8
GS		 1699 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1700#else
1701 JMPENV_PUSH(ret);
1702#endif
6224f72b
GS		 1703 switch (ret) {
1704 case 1:
1705 cxstack_ix = -1; /* start context stack again */
312caa8e 1706 goto redo_body;
14dd3ad8
GS		 1707 case 0: /* normal completion */
1708#ifndef PERL_FLEXIBLE_EXCEPTIONS
1709 redo_body:
1710 run_body(oldscope);
1711#endif
1712 /* FALL THROUGH */
1713 case 2: /* my_exit() */
3280af22 1714 while (PL_scopestack_ix > oldscope)
6224f72b
GS		 1715 LEAVE;
1716 FREETMPS;
3280af22 1717 PL_curstash = PL_defstash;
3a1ee7e8 1718 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
31d77e54
AB		 1719 PL_endav && !PL_minus_c)
1720 call_list(oldscope, PL_endav);
6224f72b
GS		 1721#ifdef MYMALLOC
1722 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1723 dump_mstats("after execution: ");
1724#endif
14dd3ad8
GS		 1725 ret = STATUS_NATIVE_EXPORT;
1726 break;
6224f72b 1727 case 3:
312caa8e
CS		 1728 if (PL_restartop) {
1729 POPSTACK_TO(PL_mainstack);
1730 goto redo_body;
6224f72b 1731 }
bf49b057 1732 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 1733 FREETMPS;
14dd3ad8
GS		 1734 ret = 1;
1735 break;
6224f72b
GS		 1736 }
1737
14dd3ad8
GS		 1738 JMPENV_POP;
1739 return ret;
312caa8e
CS		 1740}
1741
14dd3ad8 1742#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1743STATIC void *
14dd3ad8 1744S_vrun_body(pTHX_ va_list args)
312caa8e 1745{
312caa8e
CS		 1746 I32 oldscope = va_arg(args, I32);
1747
14dd3ad8
GS		 1748 return run_body(oldscope);
1749}
1750#endif
1751
1752
1753STATIC void *
1754S_run_body(pTHX_ I32 oldscope)
1755{
6224f72b 1756 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 1757 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 1758
3280af22 1759 if (!PL_restartop) {
6224f72b 1760 DEBUG_x(dump_all());
ecae49c0
NC		 1761 if (!DEBUG_q_TEST)
1762 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
b900a521
JH		 1763 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1764 PTR2UV(thr)));
6224f72b 1765
3280af22 1766 if (PL_minus_c) {
bf4acbe4 1767#ifdef MACOS_TRADITIONAL
e69a2255
JH		 1768 PerlIO_printf(Perl_error_log, "%s%s syntax OK\n",
1769 (gMacPerl_ErrorFormat ? "# " : ""),
1770 MacPerl_MPWFileName(PL_origfilename));
bf4acbe4 1771#else
bf49b057 1772 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
bf4acbe4 1773#endif
6224f72b
GS		 1774 my_exit(0);
1775 }
3280af22 1776 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 1777 sv_setiv(PL_DBsingle, 1);
3280af22
NIS		 1778 if (PL_initav)
1779 call_list(oldscope, PL_initav);
6224f72b
GS		 1780 }
1781
1782 /* do it */
1783
3280af22 1784 if (PL_restartop) {
533c011a 1785 PL_op = PL_restartop;
3280af22 1786 PL_restartop = 0;
cea2e8a9 1787 CALLRUNOPS(aTHX);
6224f72b 1788 }
3280af22
NIS		 1789 else if (PL_main_start) {
1790 CvDEPTH(PL_main_cv) = 1;
533c011a 1791 PL_op = PL_main_start;
cea2e8a9 1792 CALLRUNOPS(aTHX);
6224f72b
GS		 1793 }
1794
f6b3007c
JH		 1795 my_exit(0);
1796 /* NOTREACHED */
312caa8e 1797 return NULL;
6224f72b
GS		 1798}
1799
954c1994 1800/*
ccfc67b7
JH		 1801=head1 SV Manipulation Functions
1802
954c1994
GS		 1803=for apidoc p||get_sv
1804
1805Returns the SV of the specified Perl scalar. If C<create> is set and the
1806Perl variable does not exist then it will be created. If C<create> is not
1807set and the variable does not exist then NULL is returned.
1808
1809=cut
1810*/
1811
6224f72b 1812SV*
864dbfa3 1813Perl_get_sv(pTHX_ const char *name, I32 create)
6224f72b
GS		 1814{
1815 GV *gv;
4d1ff10f 1816#ifdef USE_5005THREADS
6224f72b
GS		 1817 if (name[1] == '\0' && !isALPHA(name[0])) {
1818 PADOFFSET tmp = find_threadsv(name);
411caa50 1819 if (tmp != NOT_IN_PAD)
6224f72b 1820 return THREADSV(tmp);
6224f72b 1821 }
4d1ff10f 1822#endif /* USE_5005THREADS */
6224f72b
GS		 1823 gv = gv_fetchpv(name, create, SVt_PV);
1824 if (gv)
1825 return GvSV(gv);
1826 return Nullsv;
1827}
1828
954c1994 1829/*
ccfc67b7
JH		 1830=head1 Array Manipulation Functions
1831
954c1994
GS		 1832=for apidoc p||get_av
1833
1834Returns the AV of the specified Perl array. If C<create> is set and the
1835Perl variable does not exist then it will be created. If C<create> is not
1836set and the variable does not exist then NULL is returned.
1837
1838=cut
1839*/
1840
6224f72b 1841AV*
864dbfa3 1842Perl_get_av(pTHX_ const char *name, I32 create)
6224f72b
GS		 1843{
1844 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1845 if (create)
1846 return GvAVn(gv);
1847 if (gv)
1848 return GvAV(gv);
1849 return Nullav;
1850}
1851
954c1994 1852/*
ccfc67b7
JH		 1853=head1 Hash Manipulation Functions
1854
954c1994
GS		 1855=for apidoc p||get_hv
1856
1857Returns the HV of the specified Perl hash. If C<create> is set and the
1858Perl variable does not exist then it will be created. If C<create> is not
1859set and the variable does not exist then NULL is returned.
1860
1861=cut
1862*/
1863
6224f72b 1864HV*
864dbfa3 1865Perl_get_hv(pTHX_ const char *name, I32 create)
6224f72b 1866{
a0d0e21e
LW		 1867 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1868 if (create)
1869 return GvHVn(gv);
1870 if (gv)
1871 return GvHV(gv);
1872 return Nullhv;
1873}
1874
954c1994 1875/*
ccfc67b7
JH		 1876=head1 CV Manipulation Functions
1877
954c1994
GS		 1878=for apidoc p||get_cv
1879
1880Returns the CV of the specified Perl subroutine. If C<create> is set and
1881the Perl subroutine does not exist then it will be declared (which has the
1882same effect as saying C<sub name;>). If C<create> is not set and the
1883subroutine does not exist then NULL is returned.
1884
1885=cut
1886*/
1887
a0d0e21e 1888CV*
864dbfa3 1889Perl_get_cv(pTHX_ const char *name, I32 create)
a0d0e21e
LW		 1890{
1891 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
b099ddc0 1892 /* XXX unsafe for threads if eval_owner isn't held */
f6ec51f7
GS		 1893 /* XXX this is probably not what they think they're getting.
1894 * It has the same effect as "sub name;", i.e. just a forward
1895 * declaration! */
8ebc5c01 1896 if (create && !GvCVu(gv))
774d564b 1897 return newSUB(start_subparse(FALSE, 0),
a0d0e21e 1898 newSVOP(OP_CONST, 0, newSVpv(name,0)),
4633a7c4 1899 Nullop,
a0d0e21e
LW		 1900 Nullop);
1901 if (gv)
8ebc5c01 1902 return GvCVu(gv);
a0d0e21e
LW		 1903 return Nullcv;
1904}
1905
79072805
LW		 1906/* Be sure to refetch the stack pointer after calling these routines. */
1907
954c1994 1908/*
ccfc67b7
JH		 1909
1910=head1 Callback Functions
1911
954c1994
GS		 1912=for apidoc p||call_argv
1913
1914Performs a callback to the specified Perl sub. See L<perlcall>.
1915
1916=cut
1917*/
1918
a0d0e21e 1919I32
864dbfa3 1920Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 1921
8ac85365
NIS		 1922 /* See G_* flags in cop.h */
1923 /* null terminated arg list */
8990e307 1924{
a0d0e21e 1925 dSP;
8990e307 1926
924508f0 1927 PUSHMARK(SP);
a0d0e21e 1928 if (argv) {
8990e307 1929 while (*argv) {
a0d0e21e 1930 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
8990e307
LW		 1931 argv++;
1932 }
a0d0e21e 1933 PUTBACK;
8990e307 1934 }
864dbfa3 1935 return call_pv(sub_name, flags);
8990e307
LW		 1936}
1937
954c1994
GS		 1938/*
1939=for apidoc p||call_pv
1940
1941Performs a callback to the specified Perl sub. See L<perlcall>.
1942
1943=cut
1944*/
1945
a0d0e21e 1946I32
864dbfa3 1947Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS		 1948 /* name of the subroutine */
1949 /* See G_* flags in cop.h */
a0d0e21e 1950{
864dbfa3 1951 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
a0d0e21e
LW		 1952}
1953
954c1994
GS		 1954/*
1955=for apidoc p||call_method
1956
1957Performs a callback to the specified Perl method. The blessed object must
1958be on the stack. See L<perlcall>.
1959
1960=cut
1961*/
1962
a0d0e21e 1963I32
864dbfa3 1964Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS		 1965 /* name of the subroutine */
1966 /* See G_* flags in cop.h */
a0d0e21e 1967{
968b3946 1968 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
a0d0e21e
LW		 1969}
1970
1971/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS		 1972/*
1973=for apidoc p||call_sv
1974
1975Performs a callback to the Perl sub whose name is in the SV. See
1976L<perlcall>.
1977
1978=cut
1979*/
1980
a0d0e21e 1981I32
864dbfa3 1982Perl_call_sv(pTHX_ SV *sv, I32 flags)
8ac85365 1983 /* See G_* flags in cop.h */
a0d0e21e 1984{
924508f0 1985 dSP;
a0d0e21e 1986 LOGOP myop; /* fake syntax tree node */
968b3946 1987 UNOP method_op;
aa689395 1988 I32 oldmark;
13689cfe 1989 volatile I32 retval = 0;
a0d0e21e 1990 I32 oldscope;
54310121 1991 bool oldcatch = CATCH_GET;
6224f72b 1992 int ret;
533c011a 1993 OP* oldop = PL_op;
db36c5a1 1994 dJMPENV;
1e422769 1995
a0d0e21e
LW		 1996 if (flags & G_DISCARD) {
1997 ENTER;
1998 SAVETMPS;
1999 }
2000
aa689395 2001 Zero(&myop, 1, LOGOP);
54310121 2002 myop.op_next = Nullop;
f51d4af5 2003 if (!(flags & G_NOARGS))
aa689395 2004 myop.op_flags |= OPf_STACKED;
54310121 2005 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
2006 (flags & G_ARRAY) ? OPf_WANT_LIST :
2007 OPf_WANT_SCALAR);
462e5cf6 2008 SAVEOP();
533c011a 2009 PL_op = (OP*)&myop;
aa689395 2010
3280af22
NIS		 2011 EXTEND(PL_stack_sp, 1);
2012 *++PL_stack_sp = sv;
aa689395 2013 oldmark = TOPMARK;
3280af22 2014 oldscope = PL_scopestack_ix;
a0d0e21e 2015
3280af22 2016 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2017 /* Handle first BEGIN of -d. */
3280af22 2018 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24 2019 /* Try harder, since this may have been a sighandler, thus
2020 * curstash may be meaningless. */
3280af22 2021 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
491527d0 2022 && !(flags & G_NODEBUG))
533c011a 2023 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 2024
968b3946
GS		 2025 if (flags & G_METHOD) {
2026 Zero(&method_op, 1, UNOP);
2027 method_op.op_next = PL_op;
2028 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2029 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
f39d0b86 2030 PL_op = (OP*)&method_op;
968b3946
GS		 2031 }
2032
312caa8e 2033 if (!(flags & G_EVAL)) {
0cdb2077 2034 CATCH_SET(TRUE);
14dd3ad8 2035 call_body((OP*)&myop, FALSE);
312caa8e 2036 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2037 CATCH_SET(oldcatch);
312caa8e
CS		 2038 }
2039 else {
d78bda3d 2040 myop.op_other = (OP*)&myop;
3280af22 2041 PL_markstack_ptr--;
4633a7c4
LW		 2042 /* we're trying to emulate pp_entertry() here */
2043 {
c09156bb 2044 register PERL_CONTEXT *cx;
54310121 2045 I32 gimme = GIMME_V;
ac27b0f5 2046
4633a7c4
LW		 2047 ENTER;
2048 SAVETMPS;
ac27b0f5 2049
1d76a5c3 2050 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
4633a7c4 2051 PUSHEVAL(cx, 0, 0);
533c011a 2052 PL_eval_root = PL_op; /* Only needed so that goto works right. */
ac27b0f5 2053
faef0170 2054 PL_in_eval = EVAL_INEVAL;
4633a7c4 2055 if (flags & G_KEEPERR)
faef0170 2056 PL_in_eval |= EVAL_KEEPERR;
4633a7c4 2057 else
38a03e6e 2058 sv_setpv(ERRSV,"");
4633a7c4 2059 }
3280af22 2060 PL_markstack_ptr++;
a0d0e21e 2061
14dd3ad8
GS		 2062#ifdef PERL_FLEXIBLE_EXCEPTIONS
2063 redo_body:
2064 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
db36c5a1 2065 (OP*)&myop, FALSE);
14dd3ad8
GS		 2066#else
2067 JMPENV_PUSH(ret);
2068#endif
6224f72b
GS		 2069 switch (ret) {
2070 case 0:
14dd3ad8
GS		 2071#ifndef PERL_FLEXIBLE_EXCEPTIONS
2072 redo_body:
2073 call_body((OP*)&myop, FALSE);
2074#endif
312caa8e
CS		 2075 retval = PL_stack_sp - (PL_stack_base + oldmark);
2076 if (!(flags & G_KEEPERR))
2077 sv_setpv(ERRSV,"");
a0d0e21e 2078 break;
6224f72b 2079 case 1:
f86702cc 2080 STATUS_ALL_FAILURE;
a0d0e21e 2081 /* FALL THROUGH */
6224f72b 2082 case 2:
a0d0e21e 2083 /* my_exit() was called */
3280af22 2084 PL_curstash = PL_defstash;
a0d0e21e 2085 FREETMPS;
14dd3ad8 2086 JMPENV_POP;
cc3604b1 2087 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2088 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2089 my_exit_jump();
a0d0e21e 2090 /* NOTREACHED */
6224f72b 2091 case 3:
3280af22 2092 if (PL_restartop) {
533c011a 2093 PL_op = PL_restartop;
3280af22 2094 PL_restartop = 0;
312caa8e 2095 goto redo_body;
a0d0e21e 2096 }
3280af22 2097 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW		 2098 if (flags & G_ARRAY)
2099 retval = 0;
2100 else {
2101 retval = 1;
3280af22 2102 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2103 }
312caa8e 2104 break;
a0d0e21e 2105 }
a0d0e21e 2106
3280af22 2107 if (PL_scopestack_ix > oldscope) {
a0a2876f
LW		 2108 SV **newsp;
2109 PMOP *newpm;
2110 I32 gimme;
c09156bb 2111 register PERL_CONTEXT *cx;
a0a2876f
LW		 2112 I32 optype;
2113
2114 POPBLOCK(cx,newpm);
2115 POPEVAL(cx);
3280af22 2116 PL_curpm = newpm;
a0a2876f 2117 LEAVE;
a0d0e21e 2118 }
14dd3ad8 2119 JMPENV_POP;
a0d0e21e 2120 }
1e422769 2121
a0d0e21e 2122 if (flags & G_DISCARD) {
3280af22 2123 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW		 2124 retval = 0;
2125 FREETMPS;
2126 LEAVE;
2127 }
533c011a 2128 PL_op = oldop;
a0d0e21e
LW		 2129 return retval;
2130}
2131
14dd3ad8 2132#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 2133STATIC void *
14dd3ad8 2134S_vcall_body(pTHX_ va_list args)
312caa8e
CS		 2135{
2136 OP *myop = va_arg(args, OP*);
2137 int is_eval = va_arg(args, int);
2138
14dd3ad8 2139 call_body(myop, is_eval);
312caa8e
CS		 2140 return NULL;
2141}
14dd3ad8 2142#endif
312caa8e
CS		 2143
2144STATIC void
14dd3ad8 2145S_call_body(pTHX_ OP *myop, int is_eval)
312caa8e 2146{
312caa8e
CS		 2147 if (PL_op == myop) {
2148 if (is_eval)
f807eda9 2149 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
312caa8e 2150 else
f807eda9 2151 PL_op = Perl_pp_entersub(aTHX); /* this does */
312caa8e
CS		 2152 }
2153 if (PL_op)
cea2e8a9 2154 CALLRUNOPS(aTHX);
312caa8e
CS		 2155}
2156
6e72f9df 2157/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2158
954c1994
GS		 2159/*
2160=for apidoc p||eval_sv
2161
2162Tells Perl to C<eval> the string in the SV.
2163
2164=cut
2165*/
2166
a0d0e21e 2167I32
864dbfa3 2168Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2169
8ac85365 2170 /* See G_* flags in cop.h */
a0d0e21e 2171{
924508f0 2172 dSP;
a0d0e21e 2173 UNOP myop; /* fake syntax tree node */
8fa7f367 2174 volatile I32 oldmark = SP - PL_stack_base;
13689cfe 2175 volatile I32 retval = 0;
4633a7c4 2176 I32 oldscope;
6224f72b 2177 int ret;
533c011a 2178 OP* oldop = PL_op;
db36c5a1 2179 dJMPENV;
84902520 2180
4633a7c4
LW		 2181 if (flags & G_DISCARD) {
2182 ENTER;
2183 SAVETMPS;
2184 }
2185
462e5cf6 2186 SAVEOP();
533c011a
NIS		 2187 PL_op = (OP*)&myop;
2188 Zero(PL_op, 1, UNOP);
3280af22
NIS		 2189 EXTEND(PL_stack_sp, 1);
2190 *++PL_stack_sp = sv;
2191 oldscope = PL_scopestack_ix;
79072805 2192
4633a7c4
LW		 2193 if (!(flags & G_NOARGS))
2194 myop.op_flags = OPf_STACKED;
79072805 2195 myop.op_next = Nullop;
6e72f9df 2196 myop.op_type = OP_ENTEREVAL;
54310121 2197 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
2198 (flags & G_ARRAY) ? OPf_WANT_LIST :
2199 OPf_WANT_SCALAR);
6e72f9df 2200 if (flags & G_KEEPERR)
2201 myop.op_flags |= OPf_SPECIAL;
4633a7c4 2202
14dd3ad8 2203#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 2204 redo_body:
14dd3ad8 2205 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
db36c5a1 2206 (OP*)&myop, TRUE);
14dd3ad8 2207#else
dedbcade
DM		 2208 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2209 * before a PUSHEVAL, which corrupts the stack after a croak */
2210 TAINT_PROPER("eval_sv()");
2211
14dd3ad8
GS		 2212 JMPENV_PUSH(ret);
2213#endif
6224f72b
GS		 2214 switch (ret) {
2215 case 0:
14dd3ad8
GS		 2216#ifndef PERL_FLEXIBLE_EXCEPTIONS
2217 redo_body:
2218 call_body((OP*)&myop,TRUE);
2219#endif
312caa8e
CS		 2220 retval = PL_stack_sp - (PL_stack_base + oldmark);
2221 if (!(flags & G_KEEPERR))
2222 sv_setpv(ERRSV,"");
4633a7c4 2223 break;
6224f72b 2224 case 1:
f86702cc 2225 STATUS_ALL_FAILURE;
4633a7c4 2226 /* FALL THROUGH */
6224f72b 2227 case 2:
4633a7c4 2228 /* my_exit() was called */
3280af22 2229 PL_curstash = PL_defstash;
4633a7c4 2230 FREETMPS;
14dd3ad8 2231 JMPENV_POP;
cc3604b1 2232 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2233 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2234 my_exit_jump();
4633a7c4 2235 /* NOTREACHED */
6224f72b 2236 case 3:
3280af22 2237 if (PL_restartop) {
533c011a 2238 PL_op = PL_restartop;
3280af22 2239 PL_restartop = 0;
312caa8e 2240 goto redo_body;
4633a7c4 2241 }
3280af22 2242 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW		 2243 if (flags & G_ARRAY)
2244 retval = 0;
2245 else {
2246 retval = 1;
3280af22 2247 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2248 }
312caa8e 2249 break;
4633a7c4
LW		 2250 }
2251
14dd3ad8 2252 JMPENV_POP;
4633a7c4 2253 if (flags & G_DISCARD) {
3280af22 2254 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW		 2255 retval = 0;
2256 FREETMPS;
2257 LEAVE;
2258 }
533c011a 2259 PL_op = oldop;
4633a7c4
LW		 2260 return retval;
2261}
2262
954c1994
GS		 2263/*
2264=for apidoc p||eval_pv
2265
2266Tells Perl to C<eval> the given string and return an SV* result.
2267
2268=cut
2269*/
2270
137443ea 2271SV*
864dbfa3 2272Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2273{
2274 dSP;
2275 SV* sv = newSVpv(p, 0);
2276
864dbfa3 2277 eval_sv(sv, G_SCALAR);
137443ea 2278 SvREFCNT_dec(sv);
2279
2280 SPAGAIN;
2281 sv = POPs;
2282 PUTBACK;
2283
2d8e6c8d
GS		 2284 if (croak_on_error && SvTRUE(ERRSV)) {
2285 STRLEN n_a;
cea2e8a9 2286 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
2d8e6c8d 2287 }
137443ea 2288
2289 return sv;
2290}
2291
4633a7c4
LW		 2292/* Require a module. */
2293
954c1994 2294/*
ccfc67b7
JH		 2295=head1 Embedding Functions
2296
954c1994
GS		 2297=for apidoc p||require_pv
2298
7d3fb230
BS		 2299Tells Perl to C<require> the file named by the string argument. It is
2300analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2301implemented that way; consider using load_module instead.
954c1994 2302
7d3fb230 2303=cut */
954c1994 2304
4633a7c4 2305void
864dbfa3 2306Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2307{
d3acc0f7
JP		 2308 SV* sv;
2309 dSP;
e788e7d3 2310 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7
JP		 2311 PUTBACK;
2312 sv = sv_newmortal();
4633a7c4
LW		 2313 sv_setpv(sv, "require '");
2314 sv_catpv(sv, pv);
2315 sv_catpv(sv, "'");
864dbfa3 2316 eval_sv(sv, G_DISCARD);
d3acc0f7
JP		 2317 SPAGAIN;
2318 POPSTACK;
79072805
LW		 2319}
2320
79072805 2321void
864dbfa3 2322Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
79072805
LW		 2323{
2324 register GV *gv;
2325
155aba94 2326 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
14befaf4 2327 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
79072805
LW		 2328}
2329
76e3520e 2330STATIC void
cea2e8a9 2331S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
4633a7c4 2332{
ab821d7f 2333 /* This message really ought to be max 23 lines.
75c72d73 2334 * Removed -h because the user already knows that option. Others? */
fb73857a 2335
76e3520e 2336 static char *usage_msg[] = {
fb73857a 2337"-0[octal] specify record separator (\\0, if no argument)",
2338"-a autosplit mode with -n or -p (splits $_ into @F)",
fb3560ee 2339"-C[number/list] enables the listed Unicode features",
1950ee41 2340"-c check syntax only (runs BEGIN and CHECK blocks)",
aac3bd0d
GS		 2341"-d[:debugger] run program under debugger",
2342"-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
90490ea3 2343"-e program one line of program (several -e's allowed, omit programfile)",
aac3bd0d
GS		 2344"-F/pattern/ split() pattern for -a switch (//'s are optional)",
2345"-i[extension] edit <> files in place (makes backup if extension supplied)",
2346"-Idirectory specify @INC/#include directory (several -I's allowed)",
fb73857a 2347"-l[octal] enable line ending processing, specifies line terminator",
aac3bd0d
GS		 2348"-[mM][-]module execute `use/no module...' before executing program",
2349"-n assume 'while (<>) { ... }' loop around program",
2350"-p assume loop like -n but print line also, like sed",
2351"-P run program through C preprocessor before compilation",
2352"-s enable rudimentary parsing for switches after programfile",
2353"-S look for programfile using PATH environment variable",
9cbc33e8 2354"-t enable tainting warnings",
90490ea3 2355"-T enable tainting checks",
aac3bd0d 2356"-u dump core after parsing program",
fb73857a 2357"-U allow unsafe operations",
aac3bd0d
GS		 2358"-v print version, subversion (includes VERY IMPORTANT perl info)",
2359"-V[:variable] print configuration summary (or a single Config.pm variable)",
2360"-w enable many useful warnings (RECOMMENDED)",
3c0facb2 2361"-W enable all warnings",
fb73857a 2362"-x[directory] strip off text before #!perl line and perhaps cd to directory",
90490ea3 2363"-X disable all warnings",
fb73857a 2364"\n",
2365NULL
2366};
76e3520e 2367 char **p = usage_msg;
fb73857a 2368
b0e47665
GS		 2369 PerlIO_printf(PerlIO_stdout(),
2370 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2371 name);
fb73857a 2372 while (*p)
b0e47665 2373 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
4633a7c4
LW		 2374}
2375
b4ab917c
DM		 2376/* convert a string of -D options (or digits) into an int.
2377 * sets *s to point to the char after the options */
2378
2379#ifdef DEBUGGING
2380int
ddcf8bc1 2381Perl_get_debug_opts(pTHX_ char **s, bool givehelp)
b4ab917c 2382{
e6e64d9b
JC		 2383 static char *usage_msgd[] = {
2384 " Debugging flag values: (see also -d)",
2385 " p Tokenizing and parsing (with v, displays parse stack)",
3679267a 2386 " s Stack snapshots (with v, displays all stacks)",
e6e64d9b
JC		 2387 " l Context (loop) stack processing",
2388 " t Trace execution",
2389 " o Method and overloading resolution",
2390 " c String/numeric conversions",
2391 " P Print profiling info, preprocessor command for -P, source file input state",
2392 " m Memory allocation",
2393 " f Format processing",
2394 " r Regular expression parsing and execution",
2395 " x Syntax tree dump",
3679267a 2396 " u Tainting checks",
e6e64d9b
JC		 2397 " H Hash dump -- usurps values()",
2398 " X Scratchpad allocation",
2399 " D Cleaning up",
2400 " S Thread synchronization",
2401 " T Tokenising",
2402 " R Include reference counts of dumped variables (eg when using -Ds)",
2403 " J Do not s,t,P-debug (Jump over) opcodes within package DB",
2404 " v Verbose: use in conjunction with other flags",
2405 " C Copy On Write",
2406 " A Consistency checks on internal structures",
3679267a 2407 " q quiet - currently only suppresses the 'EXECUTING' message",
e6e64d9b
JC		 2408 NULL
2409 };
b4ab917c
DM		 2410 int i = 0;
2411 if (isALPHA(**s)) {
2412 /* if adding extra options, remember to update DEBUG_MASK */
ecae49c0 2413 static char debopts[] = "psltocPmfrxu HXDSTRJvCAq";
b4ab917c
DM		 2414
2415 for (; isALNUM(**s); (*s)++) {
2416 char *d = strchr(debopts,**s);
2417 if (d)
2418 i |= 1 << (d - debopts);
2419 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC		 2420 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2421 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM		 2422 }
2423 }
e6e64d9b 2424 else if (isDIGIT(**s)) {
b4ab917c
DM		 2425 i = atoi(*s);
2426 for (; isALNUM(**s); (*s)++) ;
2427 }
ddcf8bc1 2428 else if (givehelp) {
e6e64d9b
JC		 2429 char **p = usage_msgd;
2430 while (*p) PerlIO_printf(PerlIO_stdout(), "%s\n", *p++);
2431 }
b4ab917c
DM		 2432# ifdef EBCDIC
2433 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
2434 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2435 "-Dp not implemented on this platform\n");
2436# endif
2437 return i;
2438}
2439#endif
2440
79072805
LW		 2441/* This routine handles any switches that can be given during run */
2442
2443char *
864dbfa3 2444Perl_moreswitches(pTHX_ char *s)
79072805 2445{
ba210ebe 2446 STRLEN numlen;
84c133a0 2447 UV rschar;
79072805
LW		 2448
2449 switch (*s) {
2450 case '0':
a863c7d1 2451 {
f2095865
JH		 2452 I32 flags = 0;
2453
2454 SvREFCNT_dec(PL_rs);
2455 if (s[1] == 'x' && s[2]) {
2456 char *e;
2457 U8 *tmps;
2458
2459 for (s += 2, e = s; *e; e++);
2460 numlen = e - s;
2461 flags = PERL_SCAN_SILENT_ILLDIGIT;
2462 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
2463 if (s + numlen < e) {
2464 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
2465 numlen = 0;
2466 s--;
2467 }
2468 PL_rs = newSVpvn("", 0);
c5661c80 2469 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH		 2470 tmps = (U8*)SvPVX(PL_rs);
2471 uvchr_to_utf8(tmps, rschar);
2472 SvCUR_set(PL_rs, UNISKIP(rschar));
2473 SvUTF8_on(PL_rs);
2474 }
2475 else {
2476 numlen = 4;
2477 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
2478 if (rschar & ~((U8)~0))
2479 PL_rs = &PL_sv_undef;
2480 else if (!rschar && numlen >= 2)
2481 PL_rs = newSVpvn("", 0);
2482 else {
2483 char ch = (char)rschar;
2484 PL_rs = newSVpvn(&ch, 1);
2485 }
2486 }
800633c3 2487 sv_setsv(get_sv("/", TRUE), PL_rs);
f2095865 2488 return s + numlen;
a863c7d1 2489 }
46487f74 2490 case 'C':
a05d7ebb
JH		 2491 s++;
2492 PL_unicode = parse_unicode_opts(&s);
46487f74 2493 return s;
2304df62 2494 case 'F':
3280af22 2495 PL_minus_F = TRUE;
ebce5377
RGS		 2496 PL_splitstr = ++s;
2497 while (*s && !isSPACE(*s)) ++s;
2498 *s = '\0';
2499 PL_splitstr = savepv(PL_splitstr);
2304df62 2500 return s;
79072805 2501 case 'a':
3280af22 2502 PL_minus_a = TRUE;
79072805
LW		 2503 s++;
2504 return s;
2505 case 'c':
3280af22 2506 PL_minus_c = TRUE;
79072805
LW		 2507 s++;
2508 return s;
2509 case 'd':
bbce6d69 2510 forbid_setid("-d");
4633a7c4 2511 s++;
2cbb2ee1
RGS		 2512
2513 /* -dt indicates to the debugger that threads will be used */
2514 if (*s == 't' && !isALNUM(s[1])) {
2515 ++s;
2516 my_setenv("PERL5DB_THREADED", "1");
2517 }
2518
70c94a19
RR		 2519 /* The following permits -d:Mod to accepts arguments following an =
2520 in the fashion that -MSome::Mod does. */
2521 if (*s == ':' || *s == '=') {
2522 char *start;
2523 SV *sv;
2524 sv = newSVpv("use Devel::", 0);
2525 start = ++s;
2526 /* We now allow -d:Module=Foo,Bar */
2527 while(isALNUM(*s) || *s==':') ++s;
2528 if (*s != '=')
2529 sv_catpv(sv, start);
2530 else {
2531 sv_catpvn(sv, start, s-start);
2532 sv_catpv(sv, " split(/,/,q{");
2533 sv_catpv(sv, ++s);
3d27e215 2534 sv_catpv(sv, "})");
70c94a19 2535 }
4633a7c4 2536 s += strlen(s);
70c94a19 2537 my_setenv("PERL5DB", SvPV(sv, PL_na));
4633a7c4 2538 }
ed094faf 2539 if (!PL_perldb) {
3280af22 2540 PL_perldb = PERLDB_ALL;
a0d0e21e 2541 init_debugger();
ed094faf 2542 }
79072805
LW		 2543 return s;
2544 case 'D':
0453d815 2545 {
79072805 2546#ifdef DEBUGGING
bbce6d69 2547 forbid_setid("-D");
b4ab917c 2548 s++;
ddcf8bc1 2549 PL_debug = get_debug_opts(&s, 1) | DEBUG_TOP_FLAG;
12a43e32 2550#else /* !DEBUGGING */
0453d815 2551 if (ckWARN_d(WARN_DEBUGGING))
9014280d 2552 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 2553 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
a0d0e21e 2554 for (s++; isALNUM(*s); s++) ;
79072805
LW		 2555#endif
2556 /*SUPPRESS 530*/
2557 return s;
0453d815 2558 }
4633a7c4 2559 case 'h':
ac27b0f5 2560 usage(PL_origargv[0]);
7ca617d0 2561 my_exit(0);
79072805 2562 case 'i':
3280af22
NIS		 2563 if (PL_inplace)
2564 Safefree(PL_inplace);
c030f24b
GH		 2565#if defined(__CYGWIN__) /* do backup extension automagically */
2566 if (*(s+1) == '\0') {
2567 PL_inplace = savepv(".bak");
2568 return s+1;
2569 }
2570#endif /* __CYGWIN__ */
3280af22 2571 PL_inplace = savepv(s+1);
79072805 2572 /*SUPPRESS 530*/
3280af22 2573 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
7b8d334a 2574 if (*s) {
fb73857a 2575 *s++ = '\0';
7b8d334a
GS		 2576 if (*s == '-') /* Additional switches on #! line. */
2577 s++;
2578 }
fb73857a 2579 return s;
4e49a025 2580 case 'I': /* -I handled both here and in parse_body() */
bbce6d69 2581 forbid_setid("-I");
fb73857a 2582 ++s;
2583 while (*s && isSPACE(*s))
2584 ++s;
2585 if (*s) {
774d564b 2586 char *e, *p;
0df16ed7
GS		 2587 p = s;
2588 /* ignore trailing spaces (possibly followed by other switches) */
2589 do {
2590 for (e = p; *e && !isSPACE(*e); e++) ;
2591 p = e;
2592 while (isSPACE(*p))
2593 p++;
2594 } while (*p && *p != '-');
2595 e = savepvn(s, e-s);
574c798a 2596 incpush(e, TRUE, TRUE, FALSE);
0df16ed7
GS		 2597 Safefree(e);
2598 s = p;
2599 if (*s == '-')
2600 s++;
79072805
LW		 2601 }
2602 else
a67e862a 2603 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 2604 return s;
79072805 2605 case 'l':
3280af22 2606 PL_minus_l = TRUE;
79072805 2607 s++;
7889fe52
NIS		 2608 if (PL_ors_sv) {
2609 SvREFCNT_dec(PL_ors_sv);
2610 PL_ors_sv = Nullsv;
2611 }
79072805 2612 if (isDIGIT(*s)) {
53305cf1 2613 I32 flags = 0;
7889fe52 2614 PL_ors_sv = newSVpvn("\n",1);
53305cf1
NC		 2615 numlen = 3 + (*s == '0');
2616 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW		 2617 s += numlen;
2618 }
2619 else {
8bfdd7d9 2620 if (RsPARA(PL_rs)) {
7889fe52
NIS		 2621 PL_ors_sv = newSVpvn("\n\n",2);
2622 }
2623 else {
8bfdd7d9 2624 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 2625 }
79072805
LW		 2626 }
2627 return s;
06492da6
SF		 2628 case 'A':
2629 forbid_setid("-A");
930366bd
RGS		 2630 if (!PL_preambleav)
2631 PL_preambleav = newAV();
06492da6 2632 if (*++s) {
3d27e215
LM		 2633 SV *sv = newSVpv("use assertions::activate split(/,/,q", 0);
2634 sv_catpvn(sv, "\0", 1); /* Use NUL as q//-delimiter. */
06492da6 2635 sv_catpv(sv,s);
3d27e215 2636 sv_catpvn(sv, "\0)", 2);
06492da6 2637 s+=strlen(s);
06492da6
SF		 2638 av_push(PL_preambleav, sv);
2639 }
2640 else
930366bd 2641 av_push(PL_preambleav, newSVpvn("use assertions::activate",24));
06492da6 2642 return s;
1a30305b 2643 case 'M':
bbce6d69 2644 forbid_setid("-M"); /* XXX ? */
1a30305b 2645 /* FALL THROUGH */
2646 case 'm':
bbce6d69 2647 forbid_setid("-m"); /* XXX ? */
1a30305b 2648 if (*++s) {
a5f75d66 2649 char *start;
11343788 2650 SV *sv;
a5f75d66
AD		 2651 char *use = "use ";
2652 /* -M-foo == 'no foo' */
2653 if (*s == '-') { use = "no "; ++s; }
11343788 2654 sv = newSVpv(use,0);
a5f75d66 2655 start = s;
1a30305b 2656 /* We allow -M'Module qw(Foo Bar)' */
c07a80fd 2657 while(isALNUM(*s) || *s==':') ++s;
2658 if (*s != '=') {
11343788 2659 sv_catpv(sv, start);
c07a80fd 2660 if (*(start-1) == 'm') {
2661 if (*s != '\0')
cea2e8a9 2662 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
11343788 2663 sv_catpv( sv, " ()");
c07a80fd 2664 }
2665 } else {
6df41af2 2666 if (s == start)
be98fb35
GS		 2667 Perl_croak(aTHX_ "Module name required with -%c option",
2668 s[-1]);
11343788 2669 sv_catpvn(sv, start, s-start);
3d27e215
LM		 2670 sv_catpv(sv, " split(/,/,q");
2671 sv_catpvn(sv, "\0)", 1); /* Use NUL as q//-delimiter. */
11343788 2672 sv_catpv(sv, ++s);
3d27e215 2673 sv_catpvn(sv, "\0)", 2);
c07a80fd 2674 }
1a30305b 2675 s += strlen(s);
5c831c24 2676 if (!PL_preambleav)
3280af22
NIS		 2677 PL_preambleav = newAV();
2678 av_push(PL_preambleav, sv);
1a30305b 2679 }
2680 else
9e81e6a1 2681 Perl_croak(aTHX_ "Missing argument to -%c", *(s-1));
1a30305b 2682 return s;
79072805 2683 case 'n':
3280af22 2684 PL_minus_n = TRUE;
79072805
LW		 2685 s++;
2686 return s;
2687 case 'p':
3280af22 2688 PL_minus_p = TRUE;
79072805
LW		 2689 s++;
2690 return s;
2691 case 's':
bbce6d69 2692 forbid_setid("-s");
3280af22 2693 PL_doswitches = TRUE;
79072805
LW		 2694 s++;
2695 return s;
6537fe72
MS		 2696 case 't':
2697 if (!PL_tainting)
22f7c9c9 2698 TOO_LATE_FOR('t');
6537fe72
MS		 2699 s++;
2700 return s;
463ee0b2 2701 case 'T':
3280af22 2702 if (!PL_tainting)
22f7c9c9 2703 TOO_LATE_FOR('T');
463ee0b2
LW		 2704 s++;
2705 return s;
79072805 2706 case 'u':
bf4acbe4
GS		 2707#ifdef MACOS_TRADITIONAL
2708 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2709#endif
3280af22 2710 PL_do_undump = TRUE;
79072805
LW		 2711 s++;
2712 return s;
2713 case 'U':
3280af22 2714 PL_unsafe = TRUE;
79072805
LW		 2715 s++;
2716 return s;
2717 case 'v':
d7aa5382
JP		 2718 if (!sv_derived_from(PL_patchlevel, "version"))
2719 (void *)upg_version(PL_patchlevel);
8e9464f1 2720#if !defined(DGUX)
b0e47665 2721 PerlIO_printf(PerlIO_stdout(),
d7aa5382
JP		 2722 Perl_form(aTHX_ "\nThis is perl, v%_ built for %s",
2723 vstringify(PL_patchlevel),
2724 ARCHNAME));
8e9464f1
JH		 2725#else /* DGUX */
2726/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
2727 PerlIO_printf(PerlIO_stdout(),
d7aa5382
JP		 2728 Perl_form(aTHX_ "\nThis is perl, v%_\n",
2729 vstringify(PL_patchlevel)));
8e9464f1
JH		 2730 PerlIO_printf(PerlIO_stdout(),
2731 Perl_form(aTHX_ " built under %s at %s %s\n",
2732 OSNAME, __DATE__, __TIME__));
2733 PerlIO_printf(PerlIO_stdout(),
2734 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 2735 OSVERS));
8e9464f1
JH		 2736#endif /* !DGUX */
2737
fb73857a 2738#if defined(LOCAL_PATCH_COUNT)
2739 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS		 2740 PerlIO_printf(PerlIO_stdout(),
2741 "\n(with %d registered patch%s, "
2742 "see perl -V for more detail)",
2743 (int)LOCAL_PATCH_COUNT,
2744 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 2745#endif
1a30305b 2746
b0e47665 2747 PerlIO_printf(PerlIO_stdout(),
45a2796c 2748 "\n\nCopyright 1987-2004, Larry Wall\n");
eae9c151
JH		 2749#ifdef MACOS_TRADITIONAL
2750 PerlIO_printf(PerlIO_stdout(),
be3c0a43 2751 "\nMac OS port Copyright 1991-2002, Matthias Neeracher;\n"
03765510 2752 "maintained by Chris Nandor\n");
eae9c151 2753#endif
79072805 2754#ifdef MSDOS
b0e47665
GS		 2755 PerlIO_printf(PerlIO_stdout(),
2756 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff 2757#endif
2758#ifdef DJGPP
b0e47665
GS		 2759 PerlIO_printf(PerlIO_stdout(),
2760 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2761 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 2762#endif
79072805 2763#ifdef OS2
b0e47665
GS		 2764 PerlIO_printf(PerlIO_stdout(),
2765 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
be3c0a43 2766 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
79072805 2767#endif
79072805 2768#ifdef atarist
b0e47665
GS		 2769 PerlIO_printf(PerlIO_stdout(),
2770 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 2771#endif
a3f9223b 2772#ifdef __BEOS__
b0e47665
GS		 2773 PerlIO_printf(PerlIO_stdout(),
2774 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 2775#endif
1d84e8df 2776#ifdef MPE
b0e47665 2777 PerlIO_printf(PerlIO_stdout(),
e583a879 2778 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n");
1d84e8df 2779#endif
9d116dd7 2780#ifdef OEMVS
b0e47665
GS		 2781 PerlIO_printf(PerlIO_stdout(),
2782 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 2783#endif
495c5fdc 2784#ifdef __VOS__
b0e47665 2785 PerlIO_printf(PerlIO_stdout(),
94efb9fb 2786 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
495c5fdc 2787#endif
092bebab 2788#ifdef __OPEN_VM
b0e47665
GS		 2789 PerlIO_printf(PerlIO_stdout(),
2790 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 2791#endif
a1a0e61e 2792#ifdef POSIX_BC
b0e47665
GS		 2793 PerlIO_printf(PerlIO_stdout(),
2794 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 2795#endif
61ae2fbf 2796#ifdef __MINT__
b0e47665
GS		 2797 PerlIO_printf(PerlIO_stdout(),
2798 "MiNT port by Guido Flohr, 1997-1999\n");
61ae2fbf 2799#endif
f83d2536 2800#ifdef EPOC
b0e47665 2801 PerlIO_printf(PerlIO_stdout(),
be3c0a43 2802 "EPOC port by Olaf Flebbe, 1999-2002\n");
f83d2536 2803#endif
e1caacb4 2804#ifdef UNDER_CE
b475b3e6
JH		 2805 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
2806 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
e1caacb4
JH		 2807 wce_hitreturn();
2808#endif
baed7233
DL		 2809#ifdef BINARY_BUILD_NOTICE
2810 BINARY_BUILD_NOTICE;
2811#endif
b0e47665
GS		 2812 PerlIO_printf(PerlIO_stdout(),
2813 "\n\
79072805 2814Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 2815GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687
GS		 2816Complete documentation for Perl, including FAQ lists, should be found on\n\
2817this system using `man perl' or `perldoc perl'. If you have access to the\n\
c9e30dd8 2818Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
7ca617d0 2819 my_exit(0);
79072805 2820 case 'w':
599cee73 2821 if (! (PL_dowarn & G_WARN_ALL_MASK))
ac27b0f5 2822 PL_dowarn |= G_WARN_ON;
599cee73
PM		 2823 s++;
2824 return s;
2825 case 'W':
ac27b0f5 2826 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
317ea90d
MS		 2827 if (!specialWARN(PL_compiling.cop_warnings))
2828 SvREFCNT_dec(PL_compiling.cop_warnings);
d3a7d8c7 2829 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM		 2830 s++;
2831 return s;
2832 case 'X':
ac27b0f5 2833 PL_dowarn = G_WARN_ALL_OFF;
317ea90d
MS		 2834 if (!specialWARN(PL_compiling.cop_warnings))
2835 SvREFCNT_dec(PL_compiling.cop_warnings);
d3a7d8c7 2836 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW		 2837 s++;
2838 return s;
a0d0e21e 2839 case '*':
79072805
LW		 2840 case ' ':
2841 if (s[1] == '-') /* Additional switches on #! line. */
2842 return s+2;
2843 break;
a0d0e21e 2844 case '-':
79072805 2845 case 0:
51882d45 2846#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS		 2847 case '\r':
2848#endif
79072805
LW		 2849 case '\n':
2850 case '\t':
2851 break;
aa689395 2852#ifdef ALTERNATE_SHEBANG
2853 case 'S': /* OS/2 needs -S on "extproc" line. */
2854 break;
2855#endif
a0d0e21e 2856 case 'P':
3280af22 2857 if (PL_preprocess)
a0d0e21e
LW		 2858 return s+1;
2859 /* FALL THROUGH */
79072805 2860 default:
cea2e8a9 2861 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805
LW		 2862 }
2863 return Nullch;
2864}
2865
2866/* compliments of Tom Christiansen */
2867
2868/* unexec() can be found in the Gnu emacs distribution */
ee580363 2869/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW		 2870
2871void
864dbfa3 2872Perl_my_unexec(pTHX)
79072805
LW		 2873{
2874#ifdef UNEXEC
46fc3d4c 2875 SV* prog;
2876 SV* file;
ee580363 2877 int status = 1;
79072805
LW		 2878 extern int etext;
2879
ee580363 2880 prog = newSVpv(BIN_EXP, 0);
46fc3d4c 2881 sv_catpv(prog, "/perl");
6b88bc9c 2882 file = newSVpv(PL_origfilename, 0);
46fc3d4c 2883 sv_catpv(file, ".perldump");
79072805 2884
ee580363
GS		 2885 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2886 /* unexec prints msg to stderr in case of failure */
6ad3d225 2887 PerlProc_exit(status);
79072805 2888#else
a5f75d66
AD		 2889# ifdef VMS
2890# include <lib$routines.h>
2891 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
aa689395 2892# else
79072805 2893 ABORT(); /* for use with undump */
aa689395 2894# endif
a5f75d66 2895#endif
79072805
LW		 2896}
2897
cb68f92d
GS		 2898/* initialize curinterp */
2899STATIC void
cea2e8a9 2900S_init_interp(pTHX)
cb68f92d
GS		 2901{
2902
acfe0abc
GS		 2903#ifdef MULTIPLICITY
2904# define PERLVAR(var,type)
2905# define PERLVARA(var,n,type)
2906# if defined(PERL_IMPLICIT_CONTEXT)
2907# if defined(USE_5005THREADS)
2908# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
c5be433b 2909# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
acfe0abc
GS		 2910# else /* !USE_5005THREADS */
2911# define PERLVARI(var,type,init) aTHX->var = init;
2912# define PERLVARIC(var,type,init) aTHX->var = init;
2913# endif /* USE_5005THREADS */
3967c732 2914# else
acfe0abc
GS		 2915# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2916# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
066ef5b5 2917# endif
acfe0abc
GS		 2918# include "intrpvar.h"
2919# ifndef USE_5005THREADS
2920# include "thrdvar.h"
2921# endif
2922# undef PERLVAR
2923# undef PERLVARA
2924# undef PERLVARI
2925# undef PERLVARIC
2926#else
2927# define PERLVAR(var,type)
2928# define PERLVARA(var,n,type)
2929# define PERLVARI(var,type,init) PL_##var = init;
2930# define PERLVARIC(var,type,init) PL_##var = init;
2931# include "intrpvar.h"
2932# ifndef USE_5005THREADS
2933# include "thrdvar.h"
2934# endif
2935# undef PERLVAR
2936# undef PERLVARA
2937# undef PERLVARI
2938# undef PERLVARIC
cb68f92d
GS		 2939#endif
2940
cb68f92d
GS		 2941}
2942
76e3520e 2943STATIC void
cea2e8a9 2944S_init_main_stash(pTHX)
79072805 2945{
463ee0b2 2946 GV *gv;
6e72f9df 2947
3280af22 2948 PL_curstash = PL_defstash = newHV();
79cb57f6 2949 PL_curstname = newSVpvn("main",4);
adbc6bb1
LW		 2950 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2951 SvREFCNT_dec(GvHV(gv));
3280af22 2952 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
463ee0b2 2953 SvREADONLY_on(gv);
3280af22
NIS		 2954 HvNAME(PL_defstash) = savepv("main");
2955 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2956 GvMULTI_on(PL_incgv);
2957 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2958 GvMULTI_on(PL_hintgv);
2959 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2960 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2961 GvMULTI_on(PL_errgv);
2962 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2963 GvMULTI_on(PL_replgv);
cea2e8a9 2964 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
38a03e6e
MB		 2965 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2966 sv_setpvn(ERRSV, "", 0);
3280af22 2967 PL_curstash = PL_defstash;
11faa288 2968 CopSTASH_set(&PL_compiling, PL_defstash);
ed094faf 2969 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
3280af22 2970 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
4633a7c4 2971 /* We must init $/ before switches are processed. */
864dbfa3 2972 sv_setpvn(get_sv("/", TRUE), "\n", 1);
79072805
LW		 2973}
2974
ae3f3efd 2975/* PSz 18 Nov 03 fdscript now global but do not change prototype */
76e3520e 2976STATIC void
c5cccb17 2977S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv)
79072805 2978{
ae3f3efd 2979#ifndef IAMSUID
1b24ed4b
MS		 2980 char *quote;
2981 char *code;
2982 char *cpp_discard_flag;
2983 char *perl;
ae3f3efd 2984#endif
1b24ed4b 2985
ae3f3efd
PS		 2986 PL_fdscript = -1;
2987 PL_suidscript = -1;
79072805 2988
3280af22
NIS		 2989 if (PL_e_script) {
2990 PL_origfilename = savepv("-e");
96436eeb 2991 }
6c4ab083
GS		 2992 else {
2993 /* if find_script() returns, it returns a malloc()-ed value */
3280af22 2994 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
6c4ab083
GS		 2995
2996 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2997 char *s = scriptname + 8;
ae3f3efd 2998 PL_fdscript = atoi(s);
6c4ab083
GS		 2999 while (isDIGIT(*s))
3000 s++;
3001 if (*s) {
ae3f3efd
PS		 3002 /* PSz 18 Feb 04
3003 * Tell apart "normal" usage of fdscript, e.g.
3004 * with bash on FreeBSD:
3005 * perl <( echo '#!perl -DA'; echo 'print "$0\n"')
3006 * from usage in suidperl.
3007 * Does any "normal" usage leave garbage after the number???
3008 * Is it a mistake to use a similar /dev/fd/ construct for
3009 * suidperl?
3010 */
3011 PL_suidscript = 1;
3012 /* PSz 20 Feb 04
3013 * Be supersafe and do some sanity-checks.
3014 * Still, can we be sure we got the right thing?
3015 */
3016 if (*s != '/') {
3017 Perl_croak(aTHX_ "Wrong syntax (suid) fd script name \"%s\"\n", s);
3018 }
3019 if (! *(s+1)) {
3020 Perl_croak(aTHX_ "Missing (suid) fd script name\n");
3021 }
6c4ab083 3022 scriptname = savepv(s + 1);
3280af22
NIS		 3023 Safefree(PL_origfilename);
3024 PL_origfilename = scriptname;
6c4ab083
GS		 3025 }
3026 }
3027 }
3028
05ec9bb3 3029 CopFILE_free(PL_curcop);
57843af0 3030 CopFILE_set(PL_curcop, PL_origfilename);
3280af22 3031 if (strEQ(PL_origfilename,"-"))
79072805 3032 scriptname = "";
ae3f3efd
PS		 3033 if (PL_fdscript >= 0) {
3034 PL_rsfp = PerlIO_fdopen(PL_fdscript,PERL_SCRIPT_MODE);
1b24ed4b
MS		 3035# if defined(HAS_FCNTL) && defined(F_SETFD)
3036 if (PL_rsfp)
3037 /* ensure close-on-exec */
3038 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1);
3039# endif
96436eeb 3040 }
ae3f3efd
PS		 3041#ifdef IAMSUID
3042 else {
86207487
NC		 3043 Perl_croak(aTHX_ "sperl needs fd script\n"
3044 "You should not call sperl directly; do you need to "
3045 "change a #! line\nfrom sperl to perl?\n");
3046
ae3f3efd
PS		 3047/* PSz 11 Nov 03
3048 * Do not open (or do other fancy stuff) while setuid.
3049 * Perl does the open, and hands script to suidperl on a fd;
3050 * suidperl only does some checks, sets up UIDs and re-execs
3051 * perl with that fd as it has always done.
3052 */
3053 }
3054 if (PL_suidscript != 1) {
3055 Perl_croak(aTHX_ "suidperl needs (suid) fd script\n");
3056 }
3057#else /* IAMSUID */
3280af22 3058 else if (PL_preprocess) {
46fc3d4c 3059 char *cpp_cfg = CPPSTDIN;
79cb57f6 3060 SV *cpp = newSVpvn("",0);
46fc3d4c 3061 SV *cmd = NEWSV(0,0);
3062
ae58f265
JH		 3063 if (cpp_cfg[0] == 0) /* PERL_MICRO? */
3064 Perl_croak(aTHX_ "Can't run with cpp -P with CPPSTDIN undefined");
46fc3d4c 3065 if (strEQ(cpp_cfg, "cppstdin"))
cea2e8a9 3066 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
46fc3d4c 3067 sv_catpv(cpp, cpp_cfg);
79072805 3068
1b24ed4b
MS		 3069# ifndef VMS
3070 sv_catpvn(sv, "-I", 2);
3071 sv_catpv(sv,PRIVLIB_EXP);
3072# endif
46fc3d4c 3073
14953ddc
MB		 3074 DEBUG_P(PerlIO_printf(Perl_debug_log,
3075 "PL_preprocess: scriptname=\"%s\", cpp=\"%s\", sv=\"%s\", CPPMINUS=\"%s\"\n",
3076 scriptname, SvPVX (cpp), SvPVX (sv), CPPMINUS));
1b24ed4b
MS		 3077
3078# if defined(MSDOS) || defined(WIN32) || defined(VMS)
3079 quote = "\"";
3080# else
3081 quote = "'";
3082# endif
3083
3084# ifdef VMS
3085 cpp_discard_flag = "";
3086# else
3087 cpp_discard_flag = "-C";
3088# endif
3089
3090# ifdef OS2
3091 perl = os2_execname(aTHX);
3092# else
3093 perl = PL_origargv[0];
3094# endif
3095
3096
3097 /* This strips off Perl comments which might interfere with
62375a60
NIS		 3098 the C pre-processor, including #!. #line directives are
3099 deliberately stripped to avoid confusion with Perl's version
1b24ed4b
MS		 3100 of #line. FWP played some golf with it so it will fit
3101 into VMS's 255 character buffer.
3102 */
3103 if( PL_doextract )
3104 code = "(1../^#!.*perl/i)|/^\\s*#(?!\\s*((ifn?|un)def|(el|end)?if|define|include|else|error|pragma)\\b)/||!($|=1)||print";
3105 else
3106 code = "/^\\s*#(?!\\s*((ifn?|un)def|(el|end)?if|define|include|else|error|pragma)\\b)/||!($|=1)||print";
3107
3108 Perl_sv_setpvf(aTHX_ cmd, "\
3109%s -ne%s%s%s %s | %"SVf" %s %"SVf" %s",
62375a60 3110 perl, quote, code, quote, scriptname, cpp,
1b24ed4b
MS		 3111 cpp_discard_flag, sv, CPPMINUS);
3112
3280af22 3113 PL_doextract = FALSE;
0a6c758d 3114
62375a60
NIS		 3115 DEBUG_P(PerlIO_printf(Perl_debug_log,
3116 "PL_preprocess: cmd=\"%s\"\n",
0a6c758d
MS		 3117 SvPVX(cmd)));
3118
3280af22 3119 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
46fc3d4c 3120 SvREFCNT_dec(cmd);
3121 SvREFCNT_dec(cpp);
79072805
LW		 3122 }
3123 else if (!*scriptname) {
bbce6d69 3124 forbid_setid("program input from stdin");
3280af22 3125 PL_rsfp = PerlIO_stdin();
79072805 3126 }
96436eeb 3127 else {
3280af22 3128 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
1b24ed4b
MS		 3129# if defined(HAS_FCNTL) && defined(F_SETFD)
3130 if (PL_rsfp)
3131 /* ensure close-on-exec */
3132 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1);
3133# endif
96436eeb 3134 }
ae3f3efd 3135#endif /* IAMSUID */
3280af22 3136 if (!PL_rsfp) {
447218f8 3137 /* PSz 16 Sep 03 Keep neat error message */
fa3aa65a
JC		 3138 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3139 CopFILE(PL_curcop), Strerror(errno));
13281fa4 3140 }
79072805 3141}
8d063cd8 3142
7b89560d
JH		 3143/* Mention
3144 * I_SYSSTATVFS HAS_FSTATVFS
3145 * I_SYSMOUNT
c890dc6c 3146 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
7b89560d
JH		 3147 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
3148 * here so that metaconfig picks them up. */
3149
104d25b7 3150#ifdef IAMSUID
864dbfa3 3151STATIC int
e688b231 3152S_fd_on_nosuid_fs(pTHX_ int fd)
104d25b7 3153{
ae3f3efd
PS		 3154/* PSz 27 Feb 04
3155 * We used to do this as "plain" user (after swapping UIDs with setreuid);
3156 * but is needed also on machines without setreuid.
3157 * Seems safe enough to run as root.
3158 */
0545a864
JH		 3159 int check_okay = 0; /* able to do all the required sys/libcalls */
3160 int on_nosuid = 0; /* the fd is on a nosuid fs */
ae3f3efd
PS		 3161 /* PSz 12 Nov 03
3162 * Need to check noexec also: nosuid might not be set, the average
3163 * sysadmin would say that nosuid is irrelevant once he sets noexec.
3164 */
3165 int on_noexec = 0; /* the fd is on a noexec fs */
3166
104d25b7 3167/*
ad27e871 3168 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
e688b231 3169 * fstatvfs() is UNIX98.
0545a864 3170 * fstatfs() is 4.3 BSD.
ad27e871 3171 * ustat()+getmnt() is pre-4.3 BSD.
0545a864
JH		 3172 * getmntent() is O(number-of-mounted-filesystems) and can hang on
3173 * an irrelevant filesystem while trying to reach the right one.
104d25b7
JH		 3174 */
3175
6439433f
JH		 3176#undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
3177
3178# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
3179 defined(HAS_FSTATVFS)
3180# define FD_ON_NOSUID_CHECK_OKAY
104d25b7 3181 struct statvfs stfs;
6439433f 3182
104d25b7
JH		 3183 check_okay = fstatvfs(fd, &stfs) == 0;
3184 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
ae3f3efd
PS		 3185#ifdef ST_NOEXEC
3186 /* ST_NOEXEC certainly absent on AIX 5.1, and doesn't seem to be documented
3187 on platforms where it is present. */
3188 on_noexec = check_okay && (stfs.f_flag & ST_NOEXEC);
3189#endif
6439433f 3190# endif /* fstatvfs */
ac27b0f5 3191
6439433f
JH		 3192# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
3193 defined(PERL_MOUNT_NOSUID) && \
ae3f3efd 3194 defined(PERL_MOUNT_NOEXEC) && \
6439433f
JH		 3195 defined(HAS_FSTATFS) && \
3196 defined(HAS_STRUCT_STATFS) && \
3197 defined(HAS_STRUCT_STATFS_F_FLAGS)
3198# define FD_ON_NOSUID_CHECK_OKAY
e688b231 3199 struct statfs stfs;
6439433f 3200
104d25b7 3201 check_okay = fstatfs(fd, &stfs) == 0;
104d25b7 3202 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
ae3f3efd 3203 on_noexec = check_okay && (stfs.f_flags & PERL_MOUNT_NOEXEC);
6439433f
JH		 3204# endif /* fstatfs */
3205
3206# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
3207 defined(PERL_MOUNT_NOSUID) && \
ae3f3efd 3208 defined(PERL_MOUNT_NOEXEC) && \
6439433f
JH		 3209 defined(HAS_FSTAT) && \
3210 defined(HAS_USTAT) && \
3211 defined(HAS_GETMNT) && \
3212 defined(HAS_STRUCT_FS_DATA) && \
3213 defined(NOSTAT_ONE)
3214# define FD_ON_NOSUID_CHECK_OKAY
c623ac67 3215 Stat_t fdst;
6439433f 3216
0545a864 3217 if (fstat(fd, &fdst) == 0) {
6439433f
JH		 3218 struct ustat us;
3219 if (ustat(fdst.st_dev, &us) == 0) {
3220 struct fs_data fsd;
3221 /* NOSTAT_ONE here because we're not examining fields which
3222 * vary between that case and STAT_ONE. */
ad27e871 3223 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
6439433f
JH		 3224 size_t cmplen = sizeof(us.f_fname);
3225 if (sizeof(fsd.fd_req.path) < cmplen)
3226 cmplen = sizeof(fsd.fd_req.path);
3227 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
3228 fdst.st_dev == fsd.fd_req.dev) {
3229 check_okay = 1;
3230 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
ae3f3efd 3231 on_noexec = fsd.fd_req.flags & PERL_MOUNT_NOEXEC;
6439433f
JH		 3232 }
3233 }
3234 }
3235 }
0545a864 3236 }
6439433f
JH		 3237# endif /* fstat+ustat+getmnt */
3238
3239# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
3240 defined(HAS_GETMNTENT) && \
3241 defined(HAS_HASMNTOPT) && \
ae3f3efd
PS		 3242 defined(MNTOPT_NOSUID) && \
3243 defined(MNTOPT_NOEXEC)
6439433f
JH		 3244# define FD_ON_NOSUID_CHECK_OKAY
3245 FILE *mtab = fopen("/etc/mtab", "r");
3246 struct mntent *entry;
c623ac67 3247 Stat_t stb, fsb;
104d25b7
JH		 3248
3249 if (mtab && (fstat(fd, &stb) == 0)) {
6439433f
JH		 3250 while (entry = getmntent(mtab)) {
3251 if (stat(entry->mnt_dir, &fsb) == 0
3252 && fsb.st_dev == stb.st_dev)
3253 {
3254 /* found the filesystem */
3255 check_okay = 1;
3256 if (hasmntopt(entry, MNTOPT_NOSUID))
3257 on_nosuid = 1;
ae3f3efd
PS		 3258 if (hasmntopt(entry, MNTOPT_NOEXEC))
3259 on_noexec = 1;
6439433f
JH		 3260 break;
3261 } /* A single fs may well fail its stat(). */
3262 }
104d25b7
JH		 3263 }
3264 if (mtab)
6439433f
JH		 3265 fclose(mtab);
3266# endif /* getmntent+hasmntopt */
0545a864 3267
ac27b0f5 3268 if (!check_okay)
ae3f3efd
PS		 3269 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid/noexec", PL_origfilename);
3270 if (on_nosuid)
3271 Perl_croak(aTHX_ "Setuid script \"%s\" on nosuid filesystem", PL_origfilename);
3272 if (on_noexec)
3273 Perl_croak(aTHX_ "Setuid script \"%s\" on noexec filesystem", PL_origfilename);
3274 return ((!check_okay) || on_nosuid || on_noexec);
104d25b7
JH		 3275}
3276#endif /* IAMSUID */
3277
76e3520e 3278STATIC void
c5cccb17 3279S_validate_suid(pTHX_ char *validarg, char *scriptname)
79072805 3280{
155aba94 3281#ifdef IAMSUID
ae3f3efd
PS		 3282 /* int which; */
3283#endif /* IAMSUID */
96436eeb 3284
13281fa4
LW		 3285 /* do we need to emulate setuid on scripts? */
3286
3287 /* This code is for those BSD systems that have setuid #! scripts disabled
3288 * in the kernel because of a security problem. Merely defining DOSUID
3289 * in perl will not fix that problem, but if you have disabled setuid
3290 * scripts in the kernel, this will attempt to emulate setuid and setgid
3291 * on scripts that have those now-otherwise-useless bits set. The setuid
27e2fb84
LW		 3292 * root version must be called suidperl or sperlN.NNN. If regular perl
3293 * discovers that it has opened a setuid script, it calls suidperl with
3294 * the same argv that it had. If suidperl finds that the script it has
3295 * just opened is NOT setuid root, it sets the effective uid back to the
3296 * uid. We don't just make perl setuid root because that loses the
3297 * effective uid we had before invoking perl, if it was different from the
3298 * uid.
ae3f3efd
PS		 3299 * PSz 27 Feb 04
3300 * Description/comments above do not match current workings:
3301 * suidperl must be hardlinked to sperlN.NNN (that is what we exec);
3302 * suidperl called with script open and name changed to /dev/fd/N/X;
3303 * suidperl croaks if script is not setuid;
3304 * making perl setuid would be a huge security risk (and yes, that
3305 * would lose any euid we might have had).
13281fa4
LW		 3306 *
3307 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
3308 * be defined in suidperl only. suidperl must be setuid root. The
3309 * Configure script will set this up for you if you want it.
3310 */
a687059c 3311
13281fa4 3312#ifdef DOSUID
6e72f9df 3313 char *s, *s2;
a0d0e21e 3314
b28d0864 3315 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
cea2e8a9 3316 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
ae3f3efd 3317 if (PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
79072805 3318 I32 len;
2d8e6c8d 3319 STRLEN n_a;
13281fa4 3320
a687059c 3321#ifdef IAMSUID
ae3f3efd
PS		 3322 if (PL_fdscript < 0 || PL_suidscript != 1)
3323 Perl_croak(aTHX_ "Need (suid) fdscript in suidperl\n"); /* We already checked this */
3324 /* PSz 11 Nov 03
3325 * Since the script is opened by perl, not suidperl, some of these
3326 * checks are superfluous. Leaving them in probably does not lower
3327 * security(?!).
3328 */
3329 /* PSz 27 Feb 04
3330 * Do checks even for systems with no HAS_SETREUID.
3331 * We used to swap, then re-swap UIDs with
3332#ifdef HAS_SETREUID
3333 if (setreuid(PL_euid,PL_uid) < 0
3334 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
3335 Perl_croak(aTHX_ "Can't swap uid and euid");
3336#endif
3337#ifdef HAS_SETREUID
3338 if (setreuid(PL_uid,PL_euid) < 0
3339 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
3340 Perl_croak(aTHX_ "Can't reswap uid and euid");
3341#endif
3342 */
3343
a687059c
LW		 3344 /* On this access check to make sure the directories are readable,
3345 * there is actually a small window that the user could use to make
3346 * filename point to an accessible directory. So there is a faint
3347 * chance that someone could execute a setuid script down in a
3348 * non-accessible directory. I don't know what to do about that.
3349 * But I don't think it's too important. The manual lies when
3350 * it says access() is useful in setuid programs.
ae3f3efd
PS		 3351 *
3352 * So, access() is pretty useless... but not harmful... do anyway.
a687059c 3353 */
e57400b1 3354 if (PerlLIO_access(CopFILE(PL_curcop),1)) { /*double check*/
ae3f3efd 3355 Perl_croak(aTHX_ "Can't access() script\n");
e57400b1 3356 }
ae3f3efd 3357
a687059c
LW		 3358 /* If we can swap euid and uid, then we can determine access rights
3359 * with a simple stat of the file, and then compare device and
3360 * inode to make sure we did stat() on the same file we opened.
3361 * Then we just have to make sure he or she can execute it.
ae3f3efd
PS		 3362 *
3363 * PSz 24 Feb 04
3364 * As the script is opened by perl, not suidperl, we do not need to
3365 * care much about access rights.
3366 *
3367 * The 'script changed' check is needed, or we can get lied to
3368 * about $0 with e.g.
3369 * suidperl /dev/fd/4//bin/x 4<setuidscript
3370 * Without HAS_SETREUID, is it safe to stat() as root?
3371 *
3372 * Are there any operating systems that pass /dev/fd/xxx for setuid
3373 * scripts, as suggested/described in perlsec(1)? Surely they do not
3374 * pass the script name as we do, so the "script changed" test would
3375 * fail for them... but we never get here with
3376 * SETUID_SCRIPTS_ARE_SECURE_NOW defined.
3377 *
3378 * This is one place where we must "lie" about return status: not
3379 * say if the stat() failed. We are doing this as root, and could
3380 * be tricked into reporting existence or not of files that the
3381 * "plain" user cannot even see.
a687059c
LW		 3382 */
3383 {
c623ac67 3384 Stat_t tmpstatbuf;
ae3f3efd
PS		 3385 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0 ||
3386 tmpstatbuf.st_dev != PL_statbuf.st_dev ||
b28d0864 3387 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
ae3f3efd 3388 Perl_croak(aTHX_ "Setuid script changed\n");
a687059c 3389 }
ae3f3efd 3390
a687059c 3391 }
ae3f3efd
PS		 3392 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
3393 Perl_croak(aTHX_ "Real UID cannot exec script\n");
3394
3395 /* PSz 27 Feb 04
3396 * We used to do this check as the "plain" user (after swapping
3397 * UIDs). But the check for nosuid and noexec filesystem is needed,
3398 * and should be done even without HAS_SETREUID. (Maybe those
3399 * operating systems do not have such mount options anyway...)
3400 * Seems safe enough to do as root.
3401 */
3402#if !defined(NO_NOSUID_CHECK)
3403 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp))) {
3404 Perl_croak(aTHX_ "Setuid script on nosuid or noexec filesystem\n");
3405 }
3406#endif
a687059c
LW		 3407#endif /* IAMSUID */
3408
e57400b1 3409 if (!S_ISREG(PL_statbuf.st_mode)) {
ae3f3efd 3410 Perl_croak(aTHX_ "Setuid script not plain file\n");
e57400b1 3411 }
b28d0864 3412 if (PL_statbuf.st_mode & S_IWOTH)
cea2e8a9 3413 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
6b88bc9c 3414 PL_doswitches = FALSE; /* -s is insecure in suid */
ae3f3efd 3415 /* PSz 13 Nov 03 But -s was caught elsewhere ... so unsetting it here is useless(?!) */
57843af0 3416 CopLINE_inc(PL_curcop);
6b88bc9c 3417 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
2d8e6c8d 3418 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
cea2e8a9 3419 Perl_croak(aTHX_ "No #! line");
2d8e6c8d 3420 s = SvPV(PL_linestr,n_a)+2;
ae3f3efd
PS		 3421 /* PSz 27 Feb 04 */
3422 /* Sanity check on line length */
3423 if (strlen(s) < 1 || strlen(s) > 4000)
3424 Perl_croak(aTHX_ "Very long #! line");
3425 /* Allow more than a single space after #! */
3426 while (isSPACE(*s)) s++;
3427 /* Sanity check on buffer end */
3428 while ((*s) && !isSPACE(*s)) s++;
2d8e6c8d 3429 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
6e72f9df 3430 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
ae3f3efd
PS		 3431 /* Sanity check on buffer start */
3432 if ( (s2-4 < SvPV(PL_linestr,n_a)+2 || strnNE(s2-4,"perl",4)) &&
3433 (s-9 < SvPV(PL_linestr,n_a)+2 || strnNE(s-9,"perl",4)) )
cea2e8a9 3434 Perl_croak(aTHX_ "Not a perl script");
a687059c 3435 while (*s == ' ' || *s == '\t') s++;
13281fa4
LW		 3436 /*
3437 * #! arg must be what we saw above. They can invoke it by
3438 * mentioning suidperl explicitly, but they may not add any strange
3439 * arguments beyond what #! says if they do invoke suidperl that way.
3440 */
ae3f3efd
PS		 3441 /*
3442 * The way validarg was set up, we rely on the kernel to start
3443 * scripts with argv[1] set to contain all #! line switches (the
3444 * whole line).
3445 */
3446 /*
3447 * Check that we got all the arguments listed in the #! line (not
3448 * just that there are no extraneous arguments). Might not matter
3449 * much, as switches from #! line seem to be acted upon (also), and
3450 * so may be checked and trapped in perl. But, security checks must
3451 * be done in suidperl and not deferred to perl. Note that suidperl
3452 * does not get around to parsing (and checking) the switches on
3453 * the #! line (but execs perl sooner).
3454 * Allow (require) a trailing newline (which may be of two
3455 * characters on some architectures?) (but no other trailing
3456 * whitespace).
3457 */
13281fa4
LW		 3458 len = strlen(validarg);
3459 if (strEQ(validarg," PHOOEY ") ||
ae3f3efd
PS		 3460 strnNE(s,validarg,len) || !isSPACE(s[len]) ||
3461 !(strlen(s) == len+1 || (strlen(s) == len+2 && isSPACE(s[len+1]))))
cea2e8a9 3462 Perl_croak(aTHX_ "Args must match #! line");
a687059c
LW		 3463
3464#ifndef IAMSUID
ae3f3efd
PS		 3465 if (PL_fdscript < 0 &&
3466 PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
b28d0864
NIS		 3467 PL_euid == PL_statbuf.st_uid)
3468 if (!PL_do_undump)
cea2e8a9 3469 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
11fb1898 3470FIX YOUR KERNEL, OR PUT A C WRAPPER AROUND THIS SCRIPT!\n");
a687059c 3471#endif /* IAMSUID */
13281fa4 3472
ae3f3efd
PS		 3473 if (PL_fdscript < 0 &&
3474 PL_euid) { /* oops, we're not the setuid root perl */
3475 /* PSz 18 Feb 04
3476 * When root runs a setuid script, we do not go through the same
3477 * steps of execing sperl and then perl with fd scripts, but
3478 * simply set up UIDs within the same perl invocation; so do
3479 * not have the same checks (on options, whatever) that we have
3480 * for plain users. No problem really: would have to be a script
3481 * that does not actually work for plain users; and if root is
3482 * foolish and can be persuaded to run such an unsafe script, he
3483 * might run also non-setuid ones, and deserves what he gets.
3484 *
3485 * Or, we might drop the PL_euid check above (and rely just on
3486 * PL_fdscript to avoid loops), and do the execs
3487 * even for root.
3488 */
13281fa4 3489#ifndef IAMSUID
ae3f3efd
PS		 3490 int which;
3491 /* PSz 11 Nov 03
3492 * Pass fd script to suidperl.
3493 * Exec suidperl, substituting fd script for scriptname.
3494 * Pass script name as "subdir" of fd, which perl will grok;
3495 * in fact will use that to distinguish this from "normal"
3496 * usage, see comments above.
3497 */
3498 PerlIO_rewind(PL_rsfp);
3499 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
3500 /* PSz 27 Feb 04 Sanity checks on scriptname */
3501 if ((!scriptname) || (!*scriptname) ) {
3502 Perl_croak(aTHX_ "No setuid script name\n");
3503 }
3504 if (*scriptname == '-') {
3505 Perl_croak(aTHX_ "Setuid script name may not begin with dash\n");
3506 /* Or we might confuse it with an option when replacing
3507 * name in argument list, below (though we do pointer, not
3508 * string, comparisons).
3509 */
3510 }
3511 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3512 if (!PL_origargv[which]) {
3513 Perl_croak(aTHX_ "Can't change argv to have fd script\n");
3514 }
3515 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
3516 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
3517#if defined(HAS_FCNTL) && defined(F_SETFD)
3518 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
3519#endif
b35112e7 3520 PERL_FPU_PRE_EXEC
a7cb1f99 3521 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS		 3522 (int)PERL_REVISION, (int)PERL_VERSION,
3523 (int)PERL_SUBVERSION), PL_origargv);
b35112e7 3524 PERL_FPU_POST_EXEC
ae3f3efd
PS		 3525#endif /* IAMSUID */
3526 Perl_croak(aTHX_ "Can't do setuid (cannot exec sperl)\n");
13281fa4
LW		 3527 }
3528
b28d0864 3529 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
ae3f3efd
PS		 3530/* PSz 26 Feb 04
3531 * This seems back to front: we try HAS_SETEGID first; if not available
3532 * then try HAS_SETREGID; as a last chance we try HAS_SETRESGID. May be OK
3533 * in the sense that we only want to set EGID; but are there any machines
3534 * with either of the latter, but not the former? Same with UID, later.
3535 */
fe14fcc3 3536#ifdef HAS_SETEGID
b28d0864 3537 (void)setegid(PL_statbuf.st_gid);
a687059c 3538#else
fe14fcc3 3539#ifdef HAS_SETREGID
b28d0864 3540 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
85e6fe83
LW		 3541#else
3542#ifdef HAS_SETRESGID
b28d0864 3543 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
a687059c 3544#else
b28d0864 3545 PerlProc_setgid(PL_statbuf.st_gid);
a687059c
LW		 3546#endif
3547#endif
85e6fe83 3548#endif
b28d0864 3549 if (PerlProc_getegid() != PL_statbuf.st_gid)
cea2e8a9 3550 Perl_croak(aTHX_ "Can't do setegid!\n");
83025b21 3551 }
b28d0864
NIS		 3552 if (PL_statbuf.st_mode & S_ISUID) {
3553 if (PL_statbuf.st_uid != PL_euid)
fe14fcc3 3554#ifdef HAS_SETEUID
b28d0864 3555 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
a687059c 3556#else
fe14fcc3 3557#ifdef HAS_SETREUID
b28d0864 3558 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
85e6fe83
LW		 3559#else
3560#ifdef HAS_SETRESUID
b28d0864 3561 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
a687059c 3562#else
b28d0864 3563 PerlProc_setuid(PL_statbuf.st_uid);
a687059c
LW		 3564#endif
3565#endif
85e6fe83 3566#endif
b28d0864 3567 if (PerlProc_geteuid() != PL_statbuf.st_uid)
cea2e8a9 3568 Perl_croak(aTHX_ "Can't do seteuid!\n");
a687059c 3569 }
b28d0864 3570 else if (PL_uid) { /* oops, mustn't run as root */
fe14fcc3 3571#ifdef HAS_SETEUID
b28d0864 3572 (void)seteuid((Uid_t)PL_uid);
a687059c 3573#else
fe14fcc3 3574#ifdef HAS_SETREUID
b28d0864 3575 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
a687059c 3576#else
85e6fe83 3577#ifdef HAS_SETRESUID
b28d0864 3578 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
85e6fe83 3579#else
b28d0864 3580 PerlProc_setuid((Uid_t)PL_uid);
85e6fe83 3581#endif
a687059c
LW		 3582#endif
3583#endif
b28d0864 3584 if (PerlProc_geteuid() != PL_uid)
cea2e8a9 3585 Perl_croak(aTHX_ "Can't do seteuid!\n");
83025b21 3586 }
748a9306 3587 init_ids();
b28d0864 3588 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
ae3f3efd 3589 Perl_croak(aTHX_ "Effective UID cannot exec script\n"); /* they can't do this */
13281fa4
LW		 3590 }
3591#ifdef IAMSUID
ae3f3efd 3592 else if (PL_preprocess) /* PSz 13 Nov 03 Caught elsewhere, useless(?!) here */
cea2e8a9 3593 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
ae3f3efd
PS		 3594 else if (PL_fdscript < 0 || PL_suidscript != 1)
3595 /* PSz 13 Nov 03 Caught elsewhere, useless(?!) here */
3596 Perl_croak(aTHX_ "(suid) fdscript needed in suidperl\n");
e57400b1 3597 else {
ae3f3efd
PS		 3598/* PSz 16 Sep 03 Keep neat error message */
3599 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
e57400b1 3600 }
96436eeb 3601
3602 /* We absolutely must clear out any saved ids here, so we */
3603 /* exec the real perl, substituting fd script for scriptname. */
3604 /* (We pass script name as "subdir" of fd, which perl will grok.) */
ae3f3efd
PS		 3605 /*
3606 * It might be thought that using setresgid and/or setresuid (changed to
3607 * set the saved IDs) above might obviate the need to exec, and we could
3608 * go on to "do the perl thing".
3609 *
3610 * Is there such a thing as "saved GID", and is that set for setuid (but
3611 * not setgid) execution like suidperl? Without exec, it would not be
3612 * cleared for setuid (but not setgid) scripts (or might need a dummy
3613 * setresgid).
3614 *
3615 * We need suidperl to do the exact same argument checking that perl
3616 * does. Thus it cannot be very small; while it could be significantly
3617 * smaller, it is safer (simpler?) to make it essentially the same
3618 * binary as perl (but they are not identical). - Maybe could defer that
3619 * check to the invoked perl, and suidperl be a tiny wrapper instead;
3620 * but prefer to do thorough checks in suidperl itself. Such deferral
3621 * would make suidperl security rely on perl, a design no-no.
3622 *
3623 * Setuid things should be short and simple, thus easy to understand and
3624 * verify. They should do their "own thing", without influence by
3625 * attackers. It may help if their internal execution flow is fixed,
3626 * regardless of platform: it may be best to exec anyway.
3627 *
3628 * Suidperl should at least be conceptually simple: a wrapper only,
3629 * never to do any real perl. Maybe we should put
3630 * #ifdef IAMSUID
3631 * Perl_croak(aTHX_ "Suidperl should never do real perl\n");
3632 * #endif
3633 * into the perly bits.
3634 */
b28d0864
NIS		 3635 PerlIO_rewind(PL_rsfp);
3636 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
ae3f3efd
PS		 3637 /* PSz 11 Nov 03
3638 * Keep original arguments: suidperl already has fd script.
3639 */
3640/* for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ; */
3641/* if (!PL_origargv[which]) { */
3642/* errno = EPERM; */
3643/* Perl_croak(aTHX_ "Permission denied\n"); */
3644/* } */
3645/* PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s", */
3646/* PerlIO_fileno(PL_rsfp), PL_origargv[which])); */
96436eeb 3647#if defined(HAS_FCNTL) && defined(F_SETFD)
b28d0864 3648 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
96436eeb 3649#endif
b35112e7 3650 PERL_FPU_PRE_EXEC
a7cb1f99 3651 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS		 3652 (int)PERL_REVISION, (int)PERL_VERSION,
3653 (int)PERL_SUBVERSION), PL_origargv);/* try again */
b35112e7 3654 PERL_FPU_POST_EXEC
ae3f3efd 3655 Perl_croak(aTHX_ "Can't do setuid (suidperl cannot exec perl)\n");
13281fa4 3656#endif /* IAMSUID */
a687059c 3657#else /* !DOSUID */
3280af22 3658 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
a687059c 3659#ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
b28d0864
NIS		 3660 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3661 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
a687059c 3662 ||
b28d0864 3663 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
a687059c 3664 )
b28d0864 3665 if (!PL_do_undump)
cea2e8a9 3666 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
a687059c
LW		 3667FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3668#endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3669 /* not set-id, must be wrapped */
a687059c 3670 }
13281fa4 3671#endif /* DOSUID */
79072805 3672}
13281fa4 3673
76e3520e 3674STATIC void
cea2e8a9 3675S_find_beginning(pTHX)
79072805 3676{
6e72f9df 3677 register char *s, *s2;
e55ac0fa
HS		 3678#ifdef MACOS_TRADITIONAL
3679 int maclines = 0;
3680#endif
33b78306
LW		 3681
3682 /* skip forward in input to the real script? */
3683
bbce6d69 3684 forbid_setid("-x");
bf4acbe4 3685#ifdef MACOS_TRADITIONAL
084592ab 3686 /* Since the Mac OS does not honor #! arguments for us, we do it ourselves */
ac27b0f5 3687
bf4acbe4
GS		 3688 while (PL_doextract || gMacPerl_AlwaysExtract) {
3689 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3690 if (!gMacPerl_AlwaysExtract)
3691 Perl_croak(aTHX_ "No Perl script found in input\n");
e55ac0fa 3692
bf4acbe4
GS		 3693 if (PL_doextract) /* require explicit override ? */
3694 if (!OverrideExtract(PL_origfilename))
3695 Perl_croak(aTHX_ "User aborted script\n");
3696 else
3697 PL_doextract = FALSE;
e55ac0fa 3698
bf4acbe4
GS		 3699 /* Pater peccavi, file does not have #! */
3700 PerlIO_rewind(PL_rsfp);
e55ac0fa 3701
bf4acbe4
GS		 3702 break;
3703 }
3704#else
3280af22
NIS		 3705 while (PL_doextract) {
3706 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
cea2e8a9 3707 Perl_croak(aTHX_ "No Perl script found in input\n");
bf4acbe4 3708#endif
4f0c37ba
IZ		 3709 s2 = s;
3710 if (*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))) {
3280af22
NIS		 3711 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3712 PL_doextract = FALSE;
6e72f9df 3713 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3714 s2 = s;
3715 while (*s == ' ' || *s == '\t') s++;
3716 if (*s++ == '-') {
3717 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3718 if (strnEQ(s2-4,"perl",4))
3719 /*SUPPRESS 530*/
155aba94
GS		 3720 while ((s = moreswitches(s)))
3721 ;
33b78306 3722 }
95e8664e 3723#ifdef MACOS_TRADITIONAL
e55ac0fa
HS		 3724 /* We are always searching for the #!perl line in MacPerl,
3725 * so if we find it, still keep the line count correct
3726 * by counting lines we already skipped over
3727 */
3728 for (; maclines > 0 ; maclines--)
3729 PerlIO_ungetc(PL_rsfp, '\n');
3730
95e8664e 3731 break;
e55ac0fa
HS		 3732
3733 /* gMacPerl_AlwaysExtract is false in MPW tool */
3734 } else if (gMacPerl_AlwaysExtract) {
3735 ++maclines;
95e8664e 3736#endif
83025b21
LW		 3737 }
3738 }
3739}
3740
afe37c7d 3741
76e3520e 3742STATIC void
cea2e8a9 3743S_init_ids(pTHX)
352d5a3a 3744{
d8eceb89
JH		 3745 PL_uid = PerlProc_getuid();
3746 PL_euid = PerlProc_geteuid();
3747 PL_gid = PerlProc_getgid();
3748 PL_egid = PerlProc_getegid();
748a9306 3749#ifdef VMS
b28d0864
NIS		 3750 PL_uid |= PL_gid << 16;
3751 PL_euid |= PL_egid << 16;
748a9306 3752#endif
22f7c9c9
JH		 3753 /* Should not happen: */
3754 CHECK_MALLOC_TAINT(PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3280af22 3755 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
ae3f3efd
PS		 3756 /* BUG */
3757 /* PSz 27 Feb 04
3758 * Should go by suidscript, not uid!=euid: why disallow
3759 * system("ls") in scripts run from setuid things?
3760 * Or, is this run before we check arguments and set suidscript?
3761 * What about SETUID_SCRIPTS_ARE_SECURE_NOW: could we use fdscript then?
3762 * (We never have suidscript, can we be sure to have fdscript?)
3763 * Or must then go by UID checks? See comments in forbid_setid also.
3764 */
748a9306 3765}
79072805 3766
a0643315
JH		 3767/* This is used very early in the lifetime of the program,
3768 * before even the options are parsed, so PL_tainting has
b0891165 3769 * not been initialized properly. */
af419de7 3770bool
22f7c9c9
JH		 3771Perl_doing_taint(int argc, char *argv[], char *envp[])
3772{
c3446a78
JH		 3773#ifndef PERL_IMPLICIT_SYS
3774 /* If we have PERL_IMPLICIT_SYS we can't call getuid() et alia
3775 * before we have an interpreter-- and the whole point of this
3776 * function is to be called at such an early stage. If you are on
3777 * a system with PERL_IMPLICIT_SYS but you do have a concept of
3778 * "tainted because running with altered effective ids', you'll
3779 * have to add your own checks somewhere in here. The two most
3780 * known samples of 'implicitness' are Win32 and NetWare, neither
3781 * of which has much of concept of 'uids'. */
af419de7 3782 int uid = PerlProc_getuid();
22f7c9c9 3783 int euid = PerlProc_geteuid();
af419de7 3784 int gid = PerlProc_getgid();
22f7c9c9
JH		 3785 int egid = PerlProc_getegid();
3786
3787#ifdef VMS
af419de7 3788 uid |= gid << 16;
22f7c9c9
JH		 3789 euid |= egid << 16;
3790#endif
3791 if (uid && (euid != uid || egid != gid))
3792 return 1;
c3446a78 3793#endif /* !PERL_IMPLICIT_SYS */
af419de7
JH		 3794 /* This is a really primitive check; environment gets ignored only
3795 * if -T are the first chars together; otherwise one gets
3796 * "Too late" message. */
22f7c9c9
JH		 3797 if ( argc > 1 && argv[1][0] == '-'
3798 && (argv[1][1] == 't' || argv[1][1] == 'T') )
3799 return 1;
3800 return 0;
3801}
22f7c9c9 3802
76e3520e 3803STATIC void
cea2e8a9 3804S_forbid_setid(pTHX_ char *s)
bbce6d69 3805{
ae3f3efd 3806#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
3280af22 3807 if (PL_euid != PL_uid)
cea2e8a9 3808 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3280af22 3809 if (PL_egid != PL_gid)
cea2e8a9 3810 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
ae3f3efd
PS		 3811#endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3812 /* PSz 29 Feb 04
3813 * Checks for UID/GID above "wrong": why disallow
3814 * perl -e 'print "Hello\n"'
3815 * from within setuid things?? Simply drop them: replaced by
3816 * fdscript/suidscript and #ifdef IAMSUID checks below.
3817 *
3818 * This may be too late for command-line switches. Will catch those on
3819 * the #! line, after finding the script name and setting up
3820 * fdscript/suidscript. Note that suidperl does not get around to
3821 * parsing (and checking) the switches on the #! line, but checks that
3822 * the two sets are identical.
3823 *
3824 * With SETUID_SCRIPTS_ARE_SECURE_NOW, could we use fdscript, also or
3825 * instead, or would that be "too late"? (We never have suidscript, can
3826 * we be sure to have fdscript?)
3827 *
3828 * Catch things with suidscript (in descendant of suidperl), even with
3829 * right UID/GID. Was already checked in suidperl, with #ifdef IAMSUID,
3830 * below; but I am paranoid.
3831 *
3832 * Also see comments about root running a setuid script, elsewhere.
3833 */
3834 if (PL_suidscript >= 0)
3835 Perl_croak(aTHX_ "No %s allowed with (suid) fdscript", s);
3836#ifdef IAMSUID
3837 /* PSz 11 Nov 03 Catch it in suidperl, always! */
3838 Perl_croak(aTHX_ "No %s allowed in suidperl", s);
3839#endif /* IAMSUID */
bbce6d69 3840}
3841
1ee4443e
IZ		 3842void
3843Perl_init_debugger(pTHX)
748a9306 3844{
1ee4443e
IZ		 3845 HV *ostash = PL_curstash;
3846
3280af22 3847 PL_curstash = PL_debstash;
7619c85e 3848 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("DB::args", GV_ADDMULTI, SVt_PVAV))));
3280af22 3849 AvREAL_off(PL_dbargs);
7619c85e
RG		 3850 PL_DBgv = gv_fetchpv("DB::DB", GV_ADDMULTI, SVt_PVGV);
3851 PL_DBline = gv_fetchpv("DB::dbline", GV_ADDMULTI, SVt_PVAV);
3852 PL_DBsub = gv_HVadd(gv_fetchpv("DB::sub", GV_ADDMULTI, SVt_PVHV));
1ee4443e 3853 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
7619c85e 3854 PL_DBsingle = GvSV((gv_fetchpv("DB::single", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3855 sv_setiv(PL_DBsingle, 0);
7619c85e 3856 PL_DBtrace = GvSV((gv_fetchpv("DB::trace", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3857 sv_setiv(PL_DBtrace, 0);
7619c85e 3858 PL_DBsignal = GvSV((gv_fetchpv("DB::signal", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3859 sv_setiv(PL_DBsignal, 0);
bf9cdc68 3860 PL_DBassertion = GvSV((gv_fetchpv("DB::assertion", GV_ADDMULTI, SVt_PV)));
06492da6 3861 sv_setiv(PL_DBassertion, 0);
1ee4443e 3862 PL_curstash = ostash;
352d5a3a
LW		 3863}
3864
2ce36478
SM		 3865#ifndef STRESS_REALLOC
3866#define REASONABLE(size) (size)
3867#else
3868#define REASONABLE(size) (1) /* unreasonable */
3869#endif
3870
11343788 3871void
cea2e8a9 3872Perl_init_stacks(pTHX)
79072805 3873{
e336de0d 3874 /* start with 128-item stack and 8K cxstack */
3280af22 3875 PL_curstackinfo = new_stackinfo(REASONABLE(128),
e336de0d 3876 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3280af22
NIS		 3877 PL_curstackinfo->si_type = PERLSI_MAIN;
3878 PL_curstack = PL_curstackinfo->si_stack;
3879 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
79072805 3880
3280af22
NIS		 3881 PL_stack_base = AvARRAY(PL_curstack);
3882 PL_stack_sp = PL_stack_base;
3883 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
8990e307 3884
3280af22
NIS		 3885 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3886 PL_tmps_floor = -1;
3887 PL_tmps_ix = -1;
3888 PL_tmps_max = REASONABLE(128);
8990e307 3889
3280af22
NIS		 3890 New(54,PL_markstack,REASONABLE(32),I32);
3891 PL_markstack_ptr = PL_markstack;
3892 PL_markstack_max = PL_markstack + REASONABLE(32);
79072805 3893
ce2f7c3b 3894 SET_MARK_OFFSET;
e336de0d 3895
3280af22
NIS		 3896 New(54,PL_scopestack,REASONABLE(32),I32);
3897 PL_scopestack_ix = 0;
3898 PL_scopestack_max = REASONABLE(32);
79072805 3899
3280af22
NIS		 3900 New(54,PL_savestack,REASONABLE(128),ANY);
3901 PL_savestack_ix = 0;
3902 PL_savestack_max = REASONABLE(128);
378cc40b 3903}
33b78306 3904
2ce36478
SM		 3905#undef REASONABLE
3906
76e3520e 3907STATIC void
cea2e8a9 3908S_nuke_stacks(pTHX)
6e72f9df 3909{
3280af22
NIS		 3910 while (PL_curstackinfo->si_next)
3911 PL_curstackinfo = PL_curstackinfo->si_next;
3912 while (PL_curstackinfo) {
3913 PERL_SI *p = PL_curstackinfo->si_prev;
bac4b2ad 3914 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3280af22
NIS		 3915 Safefree(PL_curstackinfo->si_cxstack);
3916 Safefree(PL_curstackinfo);
3917 PL_curstackinfo = p;
e336de0d 3918 }
3280af22
NIS		 3919 Safefree(PL_tmps_stack);
3920 Safefree(PL_markstack);
3921 Safefree(PL_scopestack);
3922 Safefree(PL_savestack);
378cc40b 3923}
33b78306 3924
76e3520e 3925STATIC void
cea2e8a9 3926S_init_lexer(pTHX)
8990e307 3927{
06039172 3928 PerlIO *tmpfp;
3280af22
NIS		 3929 tmpfp = PL_rsfp;
3930 PL_rsfp = Nullfp;
3931 lex_start(PL_linestr);
3932 PL_rsfp = tmpfp;
79cb57f6 3933 PL_subname = newSVpvn("main",4);
8990e307
LW		 3934}
3935
76e3520e 3936STATIC void
cea2e8a9 3937S_init_predump_symbols(pTHX)
45d8adaa 3938{
93a17b20 3939 GV *tmpgv;
af8c498a 3940 IO *io;
79072805 3941
864dbfa3 3942 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3280af22
NIS		 3943 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3944 GvMULTI_on(PL_stdingv);
af8c498a 3945 io = GvIOp(PL_stdingv);
a04651f4 3946 IoTYPE(io) = IoTYPE_RDONLY;
af8c498a 3947 IoIFP(io) = PerlIO_stdin();
adbc6bb1 3948 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
a5f75d66 3949 GvMULTI_on(tmpgv);
af8c498a 3950 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3951
85e6fe83 3952 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
a5f75d66 3953 GvMULTI_on(tmpgv);
af8c498a 3954 io = GvIOp(tmpgv);
a04651f4 3955 IoTYPE(io) = IoTYPE_WRONLY;
af8c498a 3956 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
4633a7c4 3957 setdefout(tmpgv);
adbc6bb1 3958 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
a5f75d66 3959 GvMULTI_on(tmpgv);
af8c498a 3960 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3961
bf49b057
GS		 3962 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3963 GvMULTI_on(PL_stderrgv);
3964 io = GvIOp(PL_stderrgv);
a04651f4 3965 IoTYPE(io) = IoTYPE_WRONLY;
af8c498a 3966 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
adbc6bb1 3967 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
a5f75d66 3968 GvMULTI_on(tmpgv);
af8c498a 3969 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3970
3280af22 3971 PL_statname = NEWSV(66,0); /* last filename we did stat on */
ab821d7f 3972
bf4acbe4
GS		 3973 if (PL_osname)
3974 Safefree(PL_osname);
3975 PL_osname = savepv(OSNAME);
79072805 3976}
33b78306 3977
a11ec5a9
RGS		 3978void
3979Perl_init_argv_symbols(pTHX_ register int argc, register char **argv)
33b78306 3980{
79072805 3981 char *s;
79072805 3982 argc--,argv++; /* skip name of script */
3280af22 3983 if (PL_doswitches) {
79072805
LW		 3984 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3985 if (!argv[0][1])
3986 break;
379d538a 3987 if (argv[0][1] == '-' && !argv[0][2]) {
79072805
LW		 3988 argc--,argv++;
3989 break;
3990 }
155aba94 3991 if ((s = strchr(argv[0], '='))) {
79072805 3992 *s++ = '\0';
85e6fe83 3993 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
79072805
LW		 3994 }
3995 else
85e6fe83 3996 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
fe14fcc3 3997 }
79072805 3998 }
a11ec5a9
RGS		 3999 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
4000 GvMULTI_on(PL_argvgv);
4001 (void)gv_AVadd(PL_argvgv);
4002 av_clear(GvAVn(PL_argvgv));
4003 for (; argc > 0; argc--,argv++) {
4004 SV *sv = newSVpv(argv[0],0);
4005 av_push(GvAVn(PL_argvgv),sv);
ce81ff12
JH		 4006 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
4007 if (PL_unicode & PERL_UNICODE_ARGV_FLAG)
4008 SvUTF8_on(sv);
4009 }
a05d7ebb
JH		 4010 if (PL_unicode & PERL_UNICODE_WIDESYSCALLS_FLAG) /* Sarathy? */
4011 (void)sv_utf8_decode(sv);
a11ec5a9
RGS		 4012 }
4013 }
4014}
4015
04fee9b5
NIS		 4016#ifdef HAS_PROCSELFEXE
4017/* This is a function so that we don't hold on to MAXPATHLEN
8338e367 4018 bytes of stack longer than necessary
04fee9b5
NIS		 4019 */
4020STATIC void
4021S_procself_val(pTHX_ SV *sv, char *arg0)
4022{
4023 char buf[MAXPATHLEN];
d13a6521 4024 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
75745e22
TJ		 4025
4026 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
4027 includes a spurious NUL which will cause $^X to fail in system
4028 or backticks (this will prevent extensions from being built and
4029 many tests from working). readlink is not meant to add a NUL.
4030 Normal readlink works fine.
4031 */
4032 if (len > 0 && buf[len-1] == '\0') {
4033 len--;
4034 }
4035
d103ec31
JH		 4036 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
4037 returning the text "unknown" from the readlink rather than the path
78cb7c00 4038 to the executable (or returning an error from the readlink). Any valid
d103ec31
JH		 4039 path has a '/' in it somewhere, so use that to validate the result.
4040 See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
4041 */
78cb7c00 4042 if (len > 0 && memchr(buf, '/', len)) {
04fee9b5
NIS		 4043 sv_setpvn(sv,buf,len);
4044 }
4045 else {
4046 sv_setpv(sv,arg0);
4047 }
4048}
4049#endif /* HAS_PROCSELFEXE */
4050
a11ec5a9
RGS		 4051STATIC void
4052S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
4053{
4054 char *s;
4055 SV *sv;
4056 GV* tmpgv;
a11ec5a9 4057
3280af22
NIS		 4058 PL_toptarget = NEWSV(0,0);
4059 sv_upgrade(PL_toptarget, SVt_PVFM);
4060 sv_setpvn(PL_toptarget, "", 0);
4061 PL_bodytarget = NEWSV(0,0);
4062 sv_upgrade(PL_bodytarget, SVt_PVFM);
4063 sv_setpvn(PL_bodytarget, "", 0);
4064 PL_formtarget = PL_bodytarget;
79072805 4065
bbce6d69 4066 TAINT;
a11ec5a9
RGS		 4067
4068 init_argv_symbols(argc,argv);
4069
155aba94 4070 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
bf4acbe4
GS		 4071#ifdef MACOS_TRADITIONAL
4072 /* $0 is not majick on a Mac */
4073 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
4074#else
3280af22 4075 sv_setpv(GvSV(tmpgv),PL_origfilename);
79072805 4076 magicname("0", "0", 1);
bf4acbe4 4077#endif
79072805 4078 }
04fee9b5
NIS		 4079 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV))) {/* $^X */
4080#ifdef HAS_PROCSELFEXE
4081 S_procself_val(aTHX_ GvSV(tmpgv), PL_origargv[0]);
4082#else
8338e367 4083#ifdef OS2
23da6c43 4084 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
8338e367
JH		 4085#else
4086 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
4087#endif
04fee9b5
NIS		 4088#endif
4089 }
155aba94 4090 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
79072805 4091 HV *hv;
3280af22
NIS		 4092 GvMULTI_on(PL_envgv);
4093 hv = GvHVn(PL_envgv);
14befaf4 4094 hv_magic(hv, Nullgv, PERL_MAGIC_env);
2f42fcb0 4095#ifndef PERL_MICRO
fa6a1c44 4096#ifdef USE_ENVIRON_ARRAY
4633a7c4
LW		 4097 /* Note that if the supplied env parameter is actually a copy
4098 of the global environ then it may now point to free'd memory
4099 if the environment has been modified since. To avoid this
4100 problem we treat env==NULL as meaning 'use the default'
4101 */
4102 if (!env)
4103 env = environ;
4efc5df6
GS		 4104 if (env != environ
4105# ifdef USE_ITHREADS
4106 && PL_curinterp == aTHX
4107# endif
4108 )
4109 {
79072805 4110 environ[0] = Nullch;
4efc5df6 4111 }
9b4eeda5
MB		 4112 if (env) {
4113 char** origenv = environ;
764df951 4114 for (; *env; env++) {
9b4eeda5 4115 if (!(s = strchr(*env,'=')) || s == *env)
79072805 4116 continue;
7da0e383 4117#if defined(MSDOS) && !defined(DJGPP)
61968511 4118 *s = '\0';
137443ea 4119 (void)strupr(*env);
61968511 4120 *s = '=';
137443ea 4121#endif
61968511 4122 sv = newSVpv(s+1, 0);
79072805 4123 (void)hv_store(hv, *env, s - *env, sv, 0);
61968511
GA		 4124 if (env != environ)
4125 mg_set(sv);
9b4eeda5
MB		 4126 if (origenv != environ) {
4127 /* realloc has shifted us */
4128 env = (env - origenv) + environ;
4129 origenv = environ;
4130 }
764df951 4131 }
9b4eeda5 4132 }
103a7189 4133#endif /* USE_ENVIRON_ARRAY */
2f42fcb0 4134#endif /* !PERL_MICRO */
79072805 4135 }
bbce6d69 4136 TAINT_NOT;
306196c3
MS		 4137 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV))) {
4138 SvREADONLY_off(GvSV(tmpgv));
7766f137 4139 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
306196c3
MS		 4140 SvREADONLY_on(GvSV(tmpgv));
4141 }
4d76a344
RGS		 4142#ifdef THREADS_HAVE_PIDS
4143 PL_ppid = (IV)getppid();
4144#endif
2710853f
MJD		 4145
4146 /* touch @F array to prevent spurious warnings 20020415 MJD */
4147 if (PL_minus_a) {
4148 (void) get_av("main::F", TRUE | GV_ADDMULTI);
4149 }
4150 /* touch @- and @+ arrays to prevent spurious warnings 20020415 MJD */
4151 (void) get_av("main::-", TRUE | GV_ADDMULTI);
4152 (void) get_av("main::+", TRUE | GV_ADDMULTI);
33b78306 4153}
34de22dd 4154
76e3520e 4155STATIC void
cea2e8a9 4156S_init_perllib(pTHX)
34de22dd 4157{
85e6fe83 4158 char *s;
3280af22 4159 if (!PL_tainting) {
552a7a9b 4160#ifndef VMS
76e3520e 4161 s = PerlEnv_getenv("PERL5LIB");
85e6fe83 4162 if (s)
574c798a 4163 incpush(s, TRUE, TRUE, TRUE);
85e6fe83 4164 else
574c798a 4165 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE, TRUE);
552a7a9b 4166#else /* VMS */
4167 /* Treat PERL5?LIB as a possible search list logical name -- the
4168 * "natural" VMS idiom for a Unix path string. We allow each
4169 * element to be a set of |-separated directories for compatibility.
4170 */
4171 char buf[256];
4172 int idx = 0;
4173 if (my_trnlnm("PERL5LIB",buf,0))
574c798a 4174 do { incpush(buf,TRUE,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
552a7a9b 4175 else
574c798a 4176 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE,TRUE);
552a7a9b 4177#endif /* VMS */
85e6fe83 4178 }
34de22dd 4179
c90c0ff4 4180/* Use the ~-expanded versions of APPLLIB (undocumented),
65f19062 4181 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
df5cef82 4182*/
4633a7c4 4183#ifdef APPLLIB_EXP
574c798a 4184 incpush(APPLLIB_EXP, TRUE, TRUE, TRUE);
16d20bd9 4185#endif
4633a7c4 4186
fed7345c 4187#ifdef ARCHLIB_EXP
574c798a 4188 incpush(ARCHLIB_EXP, FALSE, FALSE, TRUE);
a0d0e21e 4189#endif
bf4acbe4
GS		 4190#ifdef MACOS_TRADITIONAL
4191 {
c623ac67 4192 Stat_t tmpstatbuf;
bf4acbe4
GS		 4193 SV * privdir = NEWSV(55, 0);
4194 char * macperl = PerlEnv_getenv("MACPERL");
4195
4196 if (!macperl)
4197 macperl = "";
4198
4199 Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl);
4200 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
574c798a 4201 incpush(SvPVX(privdir), TRUE, FALSE, TRUE);
bf4acbe4
GS		 4202 Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl);
4203 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
574c798a 4204 incpush(SvPVX(privdir), TRUE, FALSE, TRUE);
ac27b0f5 4205
bf4acbe4
GS		 4206 SvREFCNT_dec(privdir);
4207 }
4208 if (!PL_tainting)
574c798a 4209 incpush(":", FALSE, FALSE, TRUE);
bf4acbe4 4210#else
fed7345c 4211#ifndef PRIVLIB_EXP
65f19062 4212# define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
34de22dd 4213#endif
ac27b0f5 4214#if defined(WIN32)
574c798a 4215 incpush(PRIVLIB_EXP, TRUE, FALSE, TRUE);
00dc2f4f 4216#else
574c798a 4217 incpush(PRIVLIB_EXP, FALSE, FALSE, TRUE);
00dc2f4f 4218#endif
4633a7c4 4219
65f19062 4220#ifdef SITEARCH_EXP
3b290362
GS		 4221 /* sitearch is always relative to sitelib on Windows for
4222 * DLL-based path intuition to work correctly */
4223# if !defined(WIN32)
574c798a 4224 incpush(SITEARCH_EXP, FALSE, FALSE, TRUE);
65f19062
GS		 4225# endif
4226#endif
4227
4633a7c4 4228#ifdef SITELIB_EXP
65f19062 4229# if defined(WIN32)
574c798a
SR		 4230 /* this picks up sitearch as well */
4231 incpush(SITELIB_EXP, TRUE, FALSE, TRUE);
65f19062 4232# else
574c798a 4233 incpush(SITELIB_EXP, FALSE, FALSE, TRUE);
65f19062
GS		 4234# endif
4235#endif
189d1e8d 4236
65f19062 4237#ifdef SITELIB_STEM /* Search for version-specific dirs below here */
574c798a 4238 incpush(SITELIB_STEM, FALSE, TRUE, TRUE);
81c6dfba 4239#endif
65f19062
GS		 4240
4241#ifdef PERL_VENDORARCH_EXP
4ea817c6 4242 /* vendorarch is always relative to vendorlib on Windows for
3b290362
GS		 4243 * DLL-based path intuition to work correctly */
4244# if !defined(WIN32)
574c798a 4245 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE, TRUE);
65f19062 4246# endif
4b03c463 4247#endif
65f19062
GS		 4248
4249#ifdef PERL_VENDORLIB_EXP
4250# if defined(WIN32)
574c798a 4251 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE, TRUE); /* this picks up vendorarch as well */
65f19062 4252# else
574c798a 4253 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE, TRUE);
65f19062 4254# endif
a3635516 4255#endif
65f19062
GS		 4256
4257#ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
574c798a 4258 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE, TRUE);
00dc2f4f 4259#endif
65f19062 4260
3b777bb4 4261#ifdef PERL_OTHERLIBDIRS
574c798a 4262 incpush(PERL_OTHERLIBDIRS, TRUE, TRUE, TRUE);
3b777bb4
GS		 4263#endif
4264
3280af22 4265 if (!PL_tainting)
574c798a 4266 incpush(".", FALSE, FALSE, TRUE);
bf4acbe4 4267#endif /* MACOS_TRADITIONAL */
774d564b 4268}
4269
ed79a026 4270#if defined(DOSISH) || defined(EPOC)
774d564b 4271# define PERLLIB_SEP ';'
4272#else
4273# if defined(VMS)
4274# define PERLLIB_SEP '|'
4275# else
bf4acbe4
GS		 4276# if defined(MACOS_TRADITIONAL)
4277# define PERLLIB_SEP ','
4278# else
4279# define PERLLIB_SEP ':'
4280# endif
774d564b 4281# endif
4282#endif
4283#ifndef PERLLIB_MANGLE
4284# define PERLLIB_MANGLE(s,n) (s)
ac27b0f5 4285#endif
774d564b 4286
76e3520e 4287STATIC void
574c798a 4288S_incpush(pTHX_ char *p, int addsubdirs, int addoldvers, int usesep)
774d564b 4289{
4290 SV *subdir = Nullsv;
774d564b 4291
3b290362 4292 if (!p || !*p)
774d564b 4293 return;
4294
9c8a64f0 4295 if (addsubdirs || addoldvers) {
00db4c45 4296 subdir = sv_newmortal();
774d564b 4297 }
4298
4299 /* Break at all separators */
4300 while (p && *p) {
8c52afec 4301 SV *libdir = NEWSV(55,0);
774d564b 4302 char *s;
4303
4304 /* skip any consecutive separators */
574c798a
SR		 4305 if (usesep) {
4306 while ( *p == PERLLIB_SEP ) {
4307 /* Uncomment the next line for PATH semantics */
4308 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
4309 p++;
4310 }
774d564b 4311 }
4312
574c798a 4313 if ( usesep && (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
774d564b 4314 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
4315 (STRLEN)(s - p));
4316 p = s + 1;
4317 }
4318 else {
4319 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
4320 p = Nullch; /* break out */
4321 }
bf4acbe4 4322#ifdef MACOS_TRADITIONAL
e69a2255
JH		 4323 if (!strchr(SvPVX(libdir), ':')) {
4324 char buf[256];
4325
4326 sv_setpv(libdir, MacPerl_CanonDir(SvPVX(libdir), buf, 0));
4327 }
bf4acbe4
GS		 4328 if (SvPVX(libdir)[SvCUR(libdir)-1] != ':')
4329 sv_catpv(libdir, ":");
4330#endif
774d564b 4331
4332 /*
4333 * BEFORE pushing libdir onto @INC we may first push version- and
4334 * archname-specific sub-directories.
4335 */
9c8a64f0 4336 if (addsubdirs || addoldvers) {
29d82f8d 4337#ifdef PERL_INC_VERSION_LIST
8353b874
GS		 4338 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
4339 const char *incverlist[] = { PERL_INC_VERSION_LIST };
29d82f8d
GS		 4340 const char **incver;
4341#endif
c623ac67 4342 Stat_t tmpstatbuf;
aa689395 4343#ifdef VMS
4344 char *unix;
4345 STRLEN len;
774d564b 4346
2d8e6c8d 4347 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
aa689395 4348 len = strlen(unix);
4349 while (unix[len-1] == '/') len--; /* Cosmetic */
4350 sv_usepvn(libdir,unix,len);
4351 }
4352 else
bf49b057 4353 PerlIO_printf(Perl_error_log,
aa689395 4354 "Failed to unixify @INC element \"%s\"\n",
2d8e6c8d 4355 SvPV(libdir,len));
aa689395 4356#endif
9c8a64f0 4357 if (addsubdirs) {
bf4acbe4
GS		 4358#ifdef MACOS_TRADITIONAL
4359#define PERL_AV_SUFFIX_FMT ""
084592ab
CN		 4360#define PERL_ARCH_FMT "%s:"
4361#define PERL_ARCH_FMT_PATH PERL_FS_VER_FMT PERL_AV_SUFFIX_FMT
bf4acbe4
GS		 4362#else
4363#define PERL_AV_SUFFIX_FMT "/"
4364#define PERL_ARCH_FMT "/%s"
084592ab 4365#define PERL_ARCH_FMT_PATH PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT
bf4acbe4 4366#endif
9c8a64f0 4367 /* .../version/archname if -d .../version/archname */
084592ab 4368 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH PERL_ARCH_FMT,
9c8a64f0
GS		 4369 libdir,
4370 (int)PERL_REVISION, (int)PERL_VERSION,
4371 (int)PERL_SUBVERSION, ARCHNAME);
4372 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
4373 S_ISDIR(tmpstatbuf.st_mode))
4374 av_push(GvAVn(PL_incgv), newSVsv(subdir));
4b03c463 4375
9c8a64f0 4376 /* .../version if -d .../version */
084592ab 4377 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH, libdir,
9c8a64f0
GS		 4378 (int)PERL_REVISION, (int)PERL_VERSION,
4379 (int)PERL_SUBVERSION);
4380 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
4381 S_ISDIR(tmpstatbuf.st_mode))
4382 av_push(GvAVn(PL_incgv), newSVsv(subdir));
4383
4384 /* .../archname if -d .../archname */
bf4acbe4 4385 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, ARCHNAME);
29d82f8d
GS		 4386 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
4387 S_ISDIR(tmpstatbuf.st_mode))
4388 av_push(GvAVn(PL_incgv), newSVsv(subdir));
29d82f8d 4389 }
9c8a64f0 4390
9c8a64f0 4391#ifdef PERL_INC_VERSION_LIST
ccc2aad8 4392 if (addoldvers) {
9c8a64f0
GS		 4393 for (incver = incverlist; *incver; incver++) {
4394 /* .../xxx if -d .../xxx */
bf4acbe4 4395 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, *incver);
9c8a64f0
GS		 4396 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
4397 S_ISDIR(tmpstatbuf.st_mode))
4398 av_push(GvAVn(PL_incgv), newSVsv(subdir));
4399 }
4400 }
29d82f8d 4401#endif
774d564b 4402 }
4403
4404 /* finally push this lib directory on the end of @INC */
3280af22 4405 av_push(GvAVn(PL_incgv), libdir);
774d564b 4406 }
34de22dd 4407}
93a17b20 4408
4d1ff10f 4409#ifdef USE_5005THREADS
76e3520e 4410STATIC struct perl_thread *
cea2e8a9 4411S_init_main_thread(pTHX)
199100c8 4412{
c5be433b 4413#if !defined(PERL_IMPLICIT_CONTEXT)
52e1cb5e 4414 struct perl_thread *thr;
cea2e8a9 4415#endif
199100c8
MB		 4416 XPV *xpv;
4417
52e1cb5e 4418 Newz(53, thr, 1, struct perl_thread);
533c011a 4419 PL_curcop = &PL_compiling;
c5be433b 4420 thr->interp = PERL_GET_INTERP;
199100c8 4421 thr->cvcache = newHV();
54b9620d 4422 thr->threadsv = newAV();
940cb80d 4423 /* thr->threadsvp is set when find_threadsv is called */
199100c8
MB		 4424 thr->specific = newAV();
4425 thr->flags = THRf_R_JOINABLE;
4426 MUTEX_INIT(&thr->mutex);
4427 /* Handcraft thrsv similarly to mess_sv */
533c011a 4428 New(53, PL_thrsv, 1, SV);
199100c8 4429 Newz(53, xpv, 1, XPV);
533c011a
NIS		 4430 SvFLAGS(PL_thrsv) = SVt_PV;
4431 SvANY(PL_thrsv) = (void*)xpv;
4432 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
4433 SvPVX(PL_thrsv) = (char*)thr;
4434 SvCUR_set(PL_thrsv, sizeof(thr));
4435 SvLEN_set(PL_thrsv, sizeof(thr));
4436 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
4437 thr->oursv = PL_thrsv;
4438 PL_chopset = " \n-";
3967c732 4439 PL_dumpindent = 4;
533c011a
NIS		 4440
4441 MUTEX_LOCK(&PL_threads_mutex);
4442 PL_nthreads++;
199100c8
MB		 4443 thr->tid = 0;
4444 thr->next = thr;
4445 thr->prev = thr;
8dcd6f7b 4446 thr->thr_done = 0;
533c011a 4447 MUTEX_UNLOCK(&PL_threads_mutex);
199100c8 4448
4b026b9e 4449#ifdef HAVE_THREAD_INTERN
4f63d024 4450 Perl_init_thread_intern(thr);
235db74f
GS		 4451#endif
4452
4453#ifdef SET_THREAD_SELF
4454 SET_THREAD_SELF(thr);
199100c8
MB		 4455#else
4456 thr->self = pthread_self();
235db74f 4457#endif /* SET_THREAD_SELF */
06d86050 4458 PERL_SET_THX(thr);
199100c8
MB		 4459
4460 /*
411caa50
JH		 4461 * These must come after the thread self setting
4462 * because sv_setpvn does SvTAINT and the taint
4463 * fields thread selfness being set.
199100c8 4464 */
533c011a
NIS		 4465 PL_toptarget = NEWSV(0,0);
4466 sv_upgrade(PL_toptarget, SVt_PVFM);
4467 sv_setpvn(PL_toptarget, "", 0);
4468 PL_bodytarget = NEWSV(0,0);
4469 sv_upgrade(PL_bodytarget, SVt_PVFM);
4470 sv_setpvn(PL_bodytarget, "", 0);
4471 PL_formtarget = PL_bodytarget;
79cb57f6 4472 thr->errsv = newSVpvn("", 0);
78857c3c 4473 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
5c0ca799 4474
533c011a 4475 PL_maxscream = -1;
a2efc822 4476 PL_peepp = MEMBER_TO_FPTR(Perl_peep);
0b94c7bb
GS		 4477 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
4478 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
4479 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
4480 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
4481 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
533c011a
NIS		 4482 PL_regindent = 0;
4483 PL_reginterp_cnt = 0;
5c0ca799 4484
199100c8
MB		 4485 return thr;
4486}
4d1ff10f 4487#endif /* USE_5005THREADS */
199100c8 4488
93a17b20 4489void
864dbfa3 4490Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
93a17b20 4491{
971a9dd3 4492 SV *atsv;
57843af0 4493 line_t oldline = CopLINE(PL_curcop);
312caa8e 4494 CV *cv;
22921e25 4495 STRLEN len;
6224f72b 4496 int ret;
db36c5a1 4497 dJMPENV;
93a17b20 4498
76e3520e 4499 while (AvFILL(paramList) >= 0) {
312caa8e 4500 cv = (CV*)av_shift(paramList);
ece599bd
RGS		 4501 if (PL_savebegin) {
4502 if (paramList == PL_beginav) {
059a8bb7 4503 /* save PL_beginav for compiler */
ece599bd
RGS		 4504 if (! PL_beginav_save)
4505 PL_beginav_save = newAV();
4506 av_push(PL_beginav_save, (SV*)cv);
4507 }
4508 else if (paramList == PL_checkav) {
4509 /* save PL_checkav for compiler */
4510 if (! PL_checkav_save)
4511 PL_checkav_save = newAV();
4512 av_push(PL_checkav_save, (SV*)cv);
4513 }
059a8bb7
JH		 4514 } else {
4515 SAVEFREESV(cv);
4516 }
14dd3ad8
GS		 4517#ifdef PERL_FLEXIBLE_EXCEPTIONS
4518 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_list_body), cv);
4519#else
4520 JMPENV_PUSH(ret);
4521#endif
6224f72b 4522 switch (ret) {
312caa8e 4523 case 0:
14dd3ad8
GS		 4524#ifndef PERL_FLEXIBLE_EXCEPTIONS
4525 call_list_body(cv);
4526#endif
971a9dd3 4527 atsv = ERRSV;
312caa8e
CS		 4528 (void)SvPV(atsv, len);
4529 if (len) {
4530 PL_curcop = &PL_compiling;
57843af0 4531 CopLINE_set(PL_curcop, oldline);
312caa8e
CS		 4532 if (paramList == PL_beginav)
4533 sv_catpv(atsv, "BEGIN failed--compilation aborted");
4534 else
4f25aa18
GS		 4535 Perl_sv_catpvf(aTHX_ atsv,
4536 "%s failed--call queue aborted",
7d30b5c4 4537 paramList == PL_checkav ? "CHECK"
4f25aa18
GS		 4538 : paramList == PL_initav ? "INIT"
4539 : "END");
312caa8e
CS		 4540 while (PL_scopestack_ix > oldscope)
4541 LEAVE;
14dd3ad8 4542 JMPENV_POP;
35c1215d 4543 Perl_croak(aTHX_ "%"SVf"", atsv);
a0d0e21e 4544 }
85e6fe83 4545 break;
6224f72b 4546 case 1:
f86702cc 4547 STATUS_ALL_FAILURE;
85e6fe83 4548 /* FALL THROUGH */
6224f72b 4549 case 2:
85e6fe83 4550 /* my_exit() was called */
3280af22 4551 while (PL_scopestack_ix > oldscope)
2ae324a7 4552 LEAVE;
84902520 4553 FREETMPS;
3280af22 4554 PL_curstash = PL_defstash;
3280af22 4555 PL_curcop = &PL_compiling;
57843af0 4556 CopLINE_set(PL_curcop, oldline);
14dd3ad8 4557 JMPENV_POP;
cc3604b1 4558 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
3280af22 4559 if (paramList == PL_beginav)
cea2e8a9 4560 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
85e6fe83 4561 else
4f25aa18 4562 Perl_croak(aTHX_ "%s failed--call queue aborted",
7d30b5c4 4563 paramList == PL_checkav ? "CHECK"
4f25aa18
GS		 4564 : paramList == PL_initav ? "INIT"
4565 : "END");
85e6fe83 4566 }
f86702cc 4567 my_exit_jump();
85e6fe83 4568 /* NOTREACHED */
6224f72b 4569 case 3:
312caa8e
CS		 4570 if (PL_restartop) {
4571 PL_curcop = &PL_compiling;
57843af0 4572 CopLINE_set(PL_curcop, oldline);
312caa8e 4573 JMPENV_JUMP(3);
85e6fe83 4574 }
bf49b057 4575 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e
CS		 4576 FREETMPS;
4577 break;
8990e307 4578 }
14dd3ad8 4579 JMPENV_POP;
93a17b20 4580 }
93a17b20 4581}
93a17b20 4582
14dd3ad8 4583#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 4584STATIC void *
14dd3ad8 4585S_vcall_list_body(pTHX_ va_list args)
312caa8e 4586{
312caa8e 4587 CV *cv = va_arg(args, CV*);
14dd3ad8
GS		 4588 return call_list_body(cv);
4589}
4590#endif
312caa8e 4591
14dd3ad8
GS		 4592STATIC void *
4593S_call_list_body(pTHX_ CV *cv)
4594{
312caa8e 4595 PUSHMARK(PL_stack_sp);
864dbfa3 4596 call_sv((SV*)cv, G_EVAL|G_DISCARD);
312caa8e
CS		 4597 return NULL;
4598}
4599
f86702cc 4600void
864dbfa3 4601Perl_my_exit(pTHX_ U32 status)
f86702cc 4602{
8b73bbec 4603 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
a863c7d1 4604 thr, (unsigned long) status));
f86702cc 4605 switch (status) {
4606 case 0:
4607 STATUS_ALL_SUCCESS;
4608 break;
4609 case 1:
4610 STATUS_ALL_FAILURE;
4611 break;
4612 default:
4613 STATUS_NATIVE_SET(status);
4614 break;
4615 }
4616 my_exit_jump();
4617}
4618
4619void
864dbfa3 4620Perl_my_failure_exit(pTHX)
f86702cc 4621{
4622#ifdef VMS
4623 if (vaxc$errno & 1) {
4fdae800 4624 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
4625 STATUS_NATIVE_SET(44);
f86702cc 4626 }
4627 else {
69232efa 4628 if (!vaxc$errno) /* unlikely */
4fdae800 4629 STATUS_NATIVE_SET(44);
f86702cc 4630 else
4fdae800 4631 STATUS_NATIVE_SET(vaxc$errno);
f86702cc 4632 }
4633#else
9b599b2a 4634 int exitstatus;
f86702cc 4635 if (errno & 255)
4636 STATUS_POSIX_SET(errno);
9b599b2a 4637 else {
ac27b0f5 4638 exitstatus = STATUS_POSIX >> 8;
9b599b2a
GS		 4639 if (exitstatus & 255)
4640 STATUS_POSIX_SET(exitstatus);
4641 else
4642 STATUS_POSIX_SET(255);
4643 }
f86702cc 4644#endif
4645 my_exit_jump();
93a17b20
LW		 4646}
4647
76e3520e 4648STATIC void
cea2e8a9 4649S_my_exit_jump(pTHX)
f86702cc 4650{
c09156bb 4651 register PERL_CONTEXT *cx;
f86702cc 4652 I32 gimme;
4653 SV **newsp;
4654
3280af22
NIS		 4655 if (PL_e_script) {
4656 SvREFCNT_dec(PL_e_script);
4657 PL_e_script = Nullsv;
f86702cc 4658 }
4659
3280af22 4660 POPSTACK_TO(PL_mainstack);
f86702cc 4661 if (cxstack_ix >= 0) {
4662 if (cxstack_ix > 0)
4663 dounwind(0);
3280af22 4664 POPBLOCK(cx,PL_curpm);
f86702cc 4665 LEAVE;
4666 }
ff0cee69 4667
6224f72b 4668 JMPENV_JUMP(2);
f86702cc 4669}
873ef191 4670
0cb96387 4671static I32
acfe0abc 4672read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen)
873ef191
GS		 4673{
4674 char *p, *nl;
3280af22 4675 p = SvPVX(PL_e_script);
873ef191 4676 nl = strchr(p, '\n');
3280af22 4677 nl = (nl) ? nl+1 : SvEND(PL_e_script);
7dfe3f66 4678 if (nl-p == 0) {
0cb96387 4679 filter_del(read_e_script);
873ef191 4680 return 0;
7dfe3f66 4681 }
873ef191 4682 sv_catpvn(buf_sv, p, nl-p);
3280af22 4683 sv_chop(PL_e_script, nl);
873ef191
GS		 4684 return 1;
4685}
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