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Handle PERLIO= and document a bit.
[perl5.git] / perl.c
CommitLineData
a0d0e21e
LW		 1/* perl.c
2 *
4c79ee7a 3 * Copyright (c) 1987-2003 Larry Wall
a687059c 4 *
352d5a3a
LW		 5 * You may distribute under the terms of either the GNU General Public
6 * License or the Artistic License, as specified in the README file.
a687059c 7 *
8d063cd8
LW		 8 */
9
a0d0e21e
LW		 10/*
11 * "A ship then new they built for him/of mithril and of elven glass" --Bilbo
12 */
45d8adaa 13
378cc40b 14#include "EXTERN.h"
864dbfa3 15#define PERL_IN_PERL_C
378cc40b 16#include "perl.h"
e3321bb0 17#include "patchlevel.h" /* for local_patches */
378cc40b 18
011f1a1a
JH		 19#ifdef NETWARE
20#include "nwutil.h"
21char *nw_get_sitelib(const char *pl);
22#endif
23
df5cef82 24/* XXX If this causes problems, set i_unistd=undef in the hint file. */
a0d0e21e
LW		 25#ifdef I_UNISTD
26#include <unistd.h>
27#endif
a0d0e21e 28
5311654c
JH		 29#ifdef __BEOS__
30# define HZ 1000000
31#endif
32
33#ifndef HZ
34# ifdef CLK_TCK
35# define HZ CLK_TCK
36# else
37# define HZ 60
38# endif
39#endif
40
7114a2d2 41#if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
20ce7b12 42char *getenv (char *); /* Usually in <stdlib.h> */
54310121 43#endif
44
acfe0abc 45static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
0cb96387 46
a687059c
LW		 47#ifdef IAMSUID
48#ifndef DOSUID
49#define DOSUID
50#endif
51#endif
378cc40b 52
a687059c
LW		 53#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
54#ifdef DOSUID
55#undef DOSUID
56#endif
57#endif
8d063cd8 58
3db8f154 59#if defined(USE_ITHREADS)
06d86050
GS		 60# define INIT_TLS_AND_INTERP \
61 STMT_START { \
62 if (!PL_curinterp) { \
63 PERL_SET_INTERP(my_perl); \
64 INIT_THREADS; \
65 ALLOC_THREAD_KEY; \
534825c4
GS		 66 PERL_SET_THX(my_perl); \
67 OP_REFCNT_INIT; \
7d4724a4 68 MUTEX_INIT(&PL_dollarzero_mutex); \
534825c4
GS		 69 } \
70 else { \
71 PERL_SET_THX(my_perl); \
06d86050 72 } \
06d86050 73 } STMT_END
3db8f154 74#else
06d86050
GS		 75# define INIT_TLS_AND_INTERP \
76 STMT_START { \
77 if (!PL_curinterp) { \
78 PERL_SET_INTERP(my_perl); \
79 } \
80 PERL_SET_THX(my_perl); \
81 } STMT_END
82# endif
06d86050 83
32e30700
GS		 84#ifdef PERL_IMPLICIT_SYS
85PerlInterpreter *
7766f137
GS		 86perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
87 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
32e30700
GS		 88 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
89 struct IPerlDir* ipD, struct IPerlSock* ipS,
90 struct IPerlProc* ipP)
91{
92 PerlInterpreter *my_perl;
32e30700
GS		 93 /* New() needs interpreter, so call malloc() instead */
94 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
06d86050 95 INIT_TLS_AND_INTERP;
32e30700
GS		 96 Zero(my_perl, 1, PerlInterpreter);
97 PL_Mem = ipM;
7766f137
GS		 98 PL_MemShared = ipMS;
99 PL_MemParse = ipMP;
32e30700
GS		 100 PL_Env = ipE;
101 PL_StdIO = ipStd;
102 PL_LIO = ipLIO;
103 PL_Dir = ipD;
104 PL_Sock = ipS;
105 PL_Proc = ipP;
7766f137 106
32e30700
GS		 107 return my_perl;
108}
109#else
954c1994
GS		 110
111/*
ccfc67b7
JH		 112=head1 Embedding Functions
113
954c1994
GS		 114=for apidoc perl_alloc
115
116Allocates a new Perl interpreter. See L<perlembed>.
117
118=cut
119*/
120
93a17b20 121PerlInterpreter *
cea2e8a9 122perl_alloc(void)
79072805 123{
cea2e8a9 124 PerlInterpreter *my_perl;
35d7cf2c
JH		 125#ifdef USE_5005THREADS
126 dTHX;
127#endif
79072805 128
54aff467 129 /* New() needs interpreter, so call malloc() instead */
e8ee3774 130 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 131
06d86050 132 INIT_TLS_AND_INTERP;
dedcbb81 133 Zero(my_perl, 1, PerlInterpreter);
cea2e8a9 134 return my_perl;
79072805 135}
32e30700 136#endif /* PERL_IMPLICIT_SYS */
79072805 137
954c1994
GS		 138/*
139=for apidoc perl_construct
140
141Initializes a new Perl interpreter. See L<perlembed>.
142
143=cut
144*/
145
79072805 146void
0cb96387 147perl_construct(pTHXx)
79072805 148{
8990e307 149#ifdef MULTIPLICITY
54aff467 150 init_interp();
ac27b0f5 151 PL_perl_destruct_level = 1;
54aff467
GS		 152#else
153 if (PL_perl_destruct_level > 0)
154 init_interp();
155#endif
156
33f46ff6 157 /* Init the real globals (and main thread)? */
3280af22 158 if (!PL_linestr) {
14dd3ad8 159#ifdef PERL_FLEXIBLE_EXCEPTIONS
0b94c7bb 160 PL_protect = MEMBER_TO_FPTR(Perl_default_protect); /* for exceptions */
14dd3ad8 161#endif
312caa8e 162
2aea9f8a
GS		 163 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
164
3280af22
NIS		 165 PL_linestr = NEWSV(65,79);
166 sv_upgrade(PL_linestr,SVt_PVIV);
79072805 167
3280af22 168 if (!SvREADONLY(&PL_sv_undef)) {
d689ffdd
JP		 169 /* set read-only and try to insure than we wont see REFCNT==0
170 very often */
171
3280af22
NIS		 172 SvREADONLY_on(&PL_sv_undef);
173 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
79072805 174
3280af22
NIS		 175 sv_setpv(&PL_sv_no,PL_No);
176 SvNV(&PL_sv_no);
177 SvREADONLY_on(&PL_sv_no);
178 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
79072805 179
3280af22
NIS		 180 sv_setpv(&PL_sv_yes,PL_Yes);
181 SvNV(&PL_sv_yes);
182 SvREADONLY_on(&PL_sv_yes);
183 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
6e72f9df 184 }
79072805 185
cea2e8a9 186 PL_sighandlerp = Perl_sighandler;
3280af22 187 PL_pidstatus = newHV();
79072805
LW		 188 }
189
8bfdd7d9 190 PL_rs = newSVpvn("\n", 1);
dc92893f 191
cea2e8a9 192 init_stacks();
79072805 193
748a9306 194 init_ids();
3280af22 195 PL_lex_state = LEX_NOTPARSING;
a5f75d66 196
312caa8e 197 JMPENV_BOOTSTRAP;
f86702cc 198 STATUS_ALL_SUCCESS;
199
0672f40e 200 init_i18nl10n(1);
36477c24 201 SET_NUMERIC_STANDARD();
0b5b802d 202
a7cb1f99
GS		 203 {
204 U8 *s;
205 PL_patchlevel = NEWSV(0,4);
155aba94 206 (void)SvUPGRADE(PL_patchlevel, SVt_PVNV);
a7cb1f99 207 if (PERL_REVISION > 127 || PERL_VERSION > 127 || PERL_SUBVERSION > 127)
806e7201 208 SvGROW(PL_patchlevel, UTF8_MAXLEN*3+1);
a7cb1f99 209 s = (U8*)SvPVX(PL_patchlevel);
9041c2e3
NIS		 210 /* Build version strings using "native" characters */
211 s = uvchr_to_utf8(s, (UV)PERL_REVISION);
212 s = uvchr_to_utf8(s, (UV)PERL_VERSION);
213 s = uvchr_to_utf8(s, (UV)PERL_SUBVERSION);
a7cb1f99
GS		 214 *s = '\0';
215 SvCUR_set(PL_patchlevel, s - (U8*)SvPVX(PL_patchlevel));
216 SvPOK_on(PL_patchlevel);
00d6e121
MB		 217 SvNVX(PL_patchlevel) = (NV)PERL_REVISION +
218 ((NV)PERL_VERSION / (NV)1000) +
219 ((NV)PERL_SUBVERSION / (NV)1000000);
a7cb1f99
GS		 220 SvNOK_on(PL_patchlevel); /* dual valued */
221 SvUTF8_on(PL_patchlevel);
222 SvREADONLY_on(PL_patchlevel);
223 }
79072805 224
ab821d7f 225#if defined(LOCAL_PATCH_COUNT)
3280af22 226 PL_localpatches = local_patches; /* For possible -v */
ab821d7f 227#endif
228
52853b95
GS		 229#ifdef HAVE_INTERP_INTERN
230 sys_intern_init();
231#endif
232
3a1ee7e8 233 PerlIO_init(aTHX); /* Hook to IO system */
760ac839 234
3280af22
NIS		 235 PL_fdpid = newAV(); /* for remembering popen pids by fd */
236 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
24944567 237 PL_errors = newSVpvn("",0);
48c6b404 238 sv_setpvn(PERL_DEBUG_PAD(0), "", 0); /* For regex debugging. */
1f483ca1
JH		 239 sv_setpvn(PERL_DEBUG_PAD(1), "", 0); /* ext/re needs these */
240 sv_setpvn(PERL_DEBUG_PAD(2), "", 0); /* even without DEBUGGING. */
1fcf4c12 241#ifdef USE_ITHREADS
13137afc
AB		 242 PL_regex_padav = newAV();
243 av_push(PL_regex_padav,(SV*)newAV()); /* First entry is an array of empty elements */
244 PL_regex_pad = AvARRAY(PL_regex_padav);
1fcf4c12 245#endif
e5dd39fc 246#ifdef USE_REENTRANT_API
59bd0823 247 Perl_reentrant_init(aTHX);
e5dd39fc 248#endif
3d47000e
AB		 249
250 /* Note that strtab is a rather special HV. Assumptions are made
251 about not iterating on it, and not adding tie magic to it.
252 It is properly deallocated in perl_destruct() */
253 PL_strtab = newHV();
254
3d47000e
AB		 255 HvSHAREKEYS_off(PL_strtab); /* mandatory */
256 hv_ksplit(PL_strtab, 512);
257
0631ea03
AB		 258#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
259 _dyld_lookup_and_bind
260 ("__environ", (unsigned long *) &environ_pointer, NULL);
261#endif /* environ */
262
263#ifdef USE_ENVIRON_ARRAY
264 PL_origenviron = environ;
265#endif
266
5311654c
JH		 267 /* Use sysconf(_SC_CLK_TCK) if available, if not
268 * available or if the sysconf() fails, use the HZ. */
269#if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK)
270 PL_clocktick = sysconf(_SC_CLK_TCK);
271 if (PL_clocktick <= 0)
272#endif
273 PL_clocktick = HZ;
274
081fc587
AB		 275 PL_stashcache = newHV();
276
8990e307 277 ENTER;
79072805
LW		 278}
279
954c1994 280/*
62375a60
NIS		 281=for apidoc nothreadhook
282
283Stub that provides thread hook for perl_destruct when there are
284no threads.
285
286=cut
287*/
288
289int
4e9e3734 290Perl_nothreadhook(pTHX)
62375a60
NIS		 291{
292 return 0;
293}
294
295/*
954c1994
GS		 296=for apidoc perl_destruct
297
298Shuts down a Perl interpreter. See L<perlembed>.
299
300=cut
301*/
302
31d77e54 303int
0cb96387 304perl_destruct(pTHXx)
79072805 305{
7c474504 306 volatile int destruct_level; /* 0=none, 1=full, 2=full with checks */
a0d0e21e 307 HV *hv;
4d1ff10f 308#ifdef USE_5005THREADS
cea2e8a9 309 dTHX;
4d1ff10f 310#endif /* USE_5005THREADS */
8990e307 311
7766f137
GS		 312 /* wait for all pseudo-forked children to finish */
313 PERL_WAIT_FOR_CHILDREN;
314
3280af22 315 destruct_level = PL_perl_destruct_level;
4633a7c4
LW		 316#ifdef DEBUGGING
317 {
318 char *s;
155aba94 319 if ((s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL"))) {
5f05dabc 320 int i = atoi(s);
321 if (destruct_level < i)
322 destruct_level = i;
323 }
4633a7c4
LW		 324 }
325#endif
326
31d77e54
AB		 327
328 if(PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB		 329 dJMPENV;
330 int x = 0;
331
332 JMPENV_PUSH(x);
333 if (PL_endav && !PL_minus_c)
334 call_list(PL_scopestack_ix, PL_endav);
335 JMPENV_POP;
26f423df 336 }
f3faeb53 337 LEAVE;
a0d0e21e
LW		 338 FREETMPS;
339
e00b64d4 340 /* Need to flush since END blocks can produce output */
f13a2bc0 341 my_fflush_all();
e00b64d4 342
62375a60
NIS		 343 if (CALL_FPTR(PL_threadhook)(aTHX)) {
344 /* Threads hook has vetoed further cleanup */
b47cad08 345 return STATUS_NATIVE_EXPORT;
62375a60
NIS		 346 }
347
ff0cee69 348 /* We must account for everything. */
349
350 /* Destroy the main CV and syntax tree */
3280af22 351 if (PL_main_root) {
3280af22
NIS		 352 op_free(PL_main_root);
353 PL_main_root = Nullop;
a0d0e21e 354 }
3280af22
NIS		 355 PL_curcop = &PL_compiling;
356 PL_main_start = Nullop;
357 SvREFCNT_dec(PL_main_cv);
358 PL_main_cv = Nullcv;
24d3c518 359 PL_dirty = TRUE;
ff0cee69 360
13621cfb
NIS		 361 /* Tell PerlIO we are about to tear things apart in case
362 we have layers which are using resources that should
363 be cleaned up now.
364 */
365
366 PerlIO_destruct(aTHX);
367
3280af22 368 if (PL_sv_objcount) {
a0d0e21e
LW		 369 /*
370 * Try to destruct global references. We do this first so that the
371 * destructors and destructees still exist. Some sv's might remain.
372 * Non-referenced objects are on their own.
373 */
a0d0e21e 374 sv_clean_objs();
8990e307
LW		 375 }
376
5cd24f17 377 /* unhook hooks which will soon be, or use, destroyed data */
3280af22
NIS		 378 SvREFCNT_dec(PL_warnhook);
379 PL_warnhook = Nullsv;
380 SvREFCNT_dec(PL_diehook);
381 PL_diehook = Nullsv;
5cd24f17 382
4b556e6c 383 /* call exit list functions */
3280af22 384 while (PL_exitlistlen-- > 0)
acfe0abc 385 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 386
3280af22 387 Safefree(PL_exitlist);
4b556e6c 388
1c4916e5
CB		 389 PL_exitlist = NULL;
390 PL_exitlistlen = 0;
391
a0d0e21e 392 if (destruct_level == 0){
8990e307 393
a0d0e21e 394 DEBUG_P(debprofdump());
ac27b0f5 395
56a2bab7
NIS		 396#if defined(PERLIO_LAYERS)
397 /* No more IO - including error messages ! */
398 PerlIO_cleanup(aTHX);
399#endif
400
a0d0e21e 401 /* The exit() function will do everything that needs doing. */
b47cad08 402 return STATUS_NATIVE_EXPORT;
a0d0e21e 403 }
5dd60ef7 404
551a8b83 405 /* jettison our possibly duplicated environment */
4b647fb0
DM		 406 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
407 * so we certainly shouldn't free it here
408 */
409#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
4efc5df6
GS		 410 if (environ != PL_origenviron
411#ifdef USE_ITHREADS
412 /* only main thread can free environ[0] contents */
413 && PL_curinterp == aTHX
414#endif
415 )
416 {
551a8b83
JH		 417 I32 i;
418
419 for (i = 0; environ[i]; i++)
4b420006 420 safesysfree(environ[i]);
0631ea03 421
4b420006
JH		 422 /* Must use safesysfree() when working with environ. */
423 safesysfree(environ);
551a8b83
JH		 424
425 environ = PL_origenviron;
426 }
427#endif
428
5f8cb046
DM		 429#ifdef USE_ITHREADS
430 /* the syntax tree is shared between clones
431 * so op_free(PL_main_root) only ReREFCNT_dec's
432 * REGEXPs in the parent interpreter
433 * we need to manually ReREFCNT_dec for the clones
434 */
435 {
436 I32 i = AvFILLp(PL_regex_padav) + 1;
437 SV **ary = AvARRAY(PL_regex_padav);
438
439 while (i) {
35061a7e 440 SV *resv = ary[--i];
ba89bb6e 441 REGEXP *re = INT2PTR(REGEXP *,SvIVX(resv));
35061a7e
DM		 442
443 if (SvFLAGS(resv) & SVf_BREAK) {
577e12cc 444 /* this is PL_reg_curpm, already freed
35061a7e
DM		 445 * flag is set in regexec.c:S_regtry
446 */
447 SvFLAGS(resv) &= ~SVf_BREAK;
3a1ee7e8 448 }
1cc8b4c5
AB		 449 else if(SvREPADTMP(resv)) {
450 SvREPADTMP_off(resv);
451 }
35061a7e 452 else {
5f8cb046
DM		 453 ReREFCNT_dec(re);
454 }
455 }
456 }
457 SvREFCNT_dec(PL_regex_padav);
458 PL_regex_padav = Nullav;
459 PL_regex_pad = NULL;
460#endif
461
081fc587
AB		 462 SvREFCNT_dec((SV*) PL_stashcache);
463 PL_stashcache = NULL;
464
5f05dabc 465 /* loosen bonds of global variables */
466
3280af22
NIS		 467 if(PL_rsfp) {
468 (void)PerlIO_close(PL_rsfp);
469 PL_rsfp = Nullfp;
8ebc5c01 470 }
471
472 /* Filters for program text */
3280af22
NIS		 473 SvREFCNT_dec(PL_rsfp_filters);
474 PL_rsfp_filters = Nullav;
8ebc5c01 475
476 /* switches */
3280af22
NIS		 477 PL_preprocess = FALSE;
478 PL_minus_n = FALSE;
479 PL_minus_p = FALSE;
480 PL_minus_l = FALSE;
481 PL_minus_a = FALSE;
482 PL_minus_F = FALSE;
483 PL_doswitches = FALSE;
599cee73 484 PL_dowarn = G_WARN_OFF;
3280af22
NIS		 485 PL_doextract = FALSE;
486 PL_sawampersand = FALSE; /* must save all match strings */
3280af22
NIS		 487 PL_unsafe = FALSE;
488
489 Safefree(PL_inplace);
490 PL_inplace = Nullch;
a7cb1f99 491 SvREFCNT_dec(PL_patchlevel);
3280af22
NIS		 492
493 if (PL_e_script) {
494 SvREFCNT_dec(PL_e_script);
495 PL_e_script = Nullsv;
8ebc5c01 496 }
497
498 /* magical thingies */
499
7889fe52
NIS		 500 SvREFCNT_dec(PL_ofs_sv); /* $, */
501 PL_ofs_sv = Nullsv;
5f05dabc 502
7889fe52
NIS		 503 SvREFCNT_dec(PL_ors_sv); /* $\ */
504 PL_ors_sv = Nullsv;
8ebc5c01 505
3280af22
NIS		 506 SvREFCNT_dec(PL_rs); /* $/ */
507 PL_rs = Nullsv;
dc92893f 508
d33b2eba
GS		 509 PL_multiline = 0; /* $* */
510 Safefree(PL_osname); /* $^O */
511 PL_osname = Nullch;
5f05dabc 512
3280af22
NIS		 513 SvREFCNT_dec(PL_statname);
514 PL_statname = Nullsv;
515 PL_statgv = Nullgv;
5f05dabc 516
8ebc5c01 517 /* defgv, aka *_ should be taken care of elsewhere */
518
8ebc5c01 519 /* clean up after study() */
3280af22
NIS		 520 SvREFCNT_dec(PL_lastscream);
521 PL_lastscream = Nullsv;
522 Safefree(PL_screamfirst);
523 PL_screamfirst = 0;
524 Safefree(PL_screamnext);
525 PL_screamnext = 0;
8ebc5c01 526
7d5ea4e7
GS		 527 /* float buffer */
528 Safefree(PL_efloatbuf);
529 PL_efloatbuf = Nullch;
530 PL_efloatsize = 0;
531
8ebc5c01 532 /* startup and shutdown function lists */
3280af22 533 SvREFCNT_dec(PL_beginav);
5a837c8f 534 SvREFCNT_dec(PL_beginav_save);
3280af22 535 SvREFCNT_dec(PL_endav);
7d30b5c4 536 SvREFCNT_dec(PL_checkav);
ece599bd 537 SvREFCNT_dec(PL_checkav_save);
3280af22
NIS		 538 SvREFCNT_dec(PL_initav);
539 PL_beginav = Nullav;
5a837c8f 540 PL_beginav_save = Nullav;
3280af22 541 PL_endav = Nullav;
7d30b5c4 542 PL_checkav = Nullav;
ece599bd 543 PL_checkav_save = Nullav;
3280af22 544 PL_initav = Nullav;
5618dfe8 545
8ebc5c01 546 /* shortcuts just get cleared */
3280af22 547 PL_envgv = Nullgv;
3280af22
NIS		 548 PL_incgv = Nullgv;
549 PL_hintgv = Nullgv;
550 PL_errgv = Nullgv;
551 PL_argvgv = Nullgv;
552 PL_argvoutgv = Nullgv;
553 PL_stdingv = Nullgv;
bf49b057 554 PL_stderrgv = Nullgv;
3280af22
NIS		 555 PL_last_in_gv = Nullgv;
556 PL_replgv = Nullgv;
5c831c24 557 PL_debstash = Nullhv;
8ebc5c01 558
559 /* reset so print() ends up where we expect */
560 setdefout(Nullgv);
5c831c24 561
7a1c5554
GS		 562 SvREFCNT_dec(PL_argvout_stack);
563 PL_argvout_stack = Nullav;
8ebc5c01 564
5c831c24
GS		 565 SvREFCNT_dec(PL_modglobal);
566 PL_modglobal = Nullhv;
567 SvREFCNT_dec(PL_preambleav);
568 PL_preambleav = Nullav;
569 SvREFCNT_dec(PL_subname);
570 PL_subname = Nullsv;
571 SvREFCNT_dec(PL_linestr);
572 PL_linestr = Nullsv;
573 SvREFCNT_dec(PL_pidstatus);
574 PL_pidstatus = Nullhv;
575 SvREFCNT_dec(PL_toptarget);
576 PL_toptarget = Nullsv;
577 SvREFCNT_dec(PL_bodytarget);
578 PL_bodytarget = Nullsv;
579 PL_formtarget = Nullsv;
580
d33b2eba 581 /* free locale stuff */
b9582b6a 582#ifdef USE_LOCALE_COLLATE
d33b2eba
GS		 583 Safefree(PL_collation_name);
584 PL_collation_name = Nullch;
b9582b6a 585#endif
d33b2eba 586
b9582b6a 587#ifdef USE_LOCALE_NUMERIC
d33b2eba
GS		 588 Safefree(PL_numeric_name);
589 PL_numeric_name = Nullch;
a453c169 590 SvREFCNT_dec(PL_numeric_radix_sv);
b9582b6a 591#endif
d33b2eba 592
5c831c24
GS		 593 /* clear utf8 character classes */
594 SvREFCNT_dec(PL_utf8_alnum);
595 SvREFCNT_dec(PL_utf8_alnumc);
596 SvREFCNT_dec(PL_utf8_ascii);
597 SvREFCNT_dec(PL_utf8_alpha);
598 SvREFCNT_dec(PL_utf8_space);
599 SvREFCNT_dec(PL_utf8_cntrl);
600 SvREFCNT_dec(PL_utf8_graph);
601 SvREFCNT_dec(PL_utf8_digit);
602 SvREFCNT_dec(PL_utf8_upper);
603 SvREFCNT_dec(PL_utf8_lower);
604 SvREFCNT_dec(PL_utf8_print);
605 SvREFCNT_dec(PL_utf8_punct);
606 SvREFCNT_dec(PL_utf8_xdigit);
607 SvREFCNT_dec(PL_utf8_mark);
608 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 609 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 610 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 611 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH		 612 SvREFCNT_dec(PL_utf8_idstart);
613 SvREFCNT_dec(PL_utf8_idcont);
5c831c24
GS		 614 PL_utf8_alnum = Nullsv;
615 PL_utf8_alnumc = Nullsv;
616 PL_utf8_ascii = Nullsv;
617 PL_utf8_alpha = Nullsv;
618 PL_utf8_space = Nullsv;
619 PL_utf8_cntrl = Nullsv;
620 PL_utf8_graph = Nullsv;
621 PL_utf8_digit = Nullsv;
622 PL_utf8_upper = Nullsv;
623 PL_utf8_lower = Nullsv;
624 PL_utf8_print = Nullsv;
625 PL_utf8_punct = Nullsv;
626 PL_utf8_xdigit = Nullsv;
627 PL_utf8_mark = Nullsv;
628 PL_utf8_toupper = Nullsv;
629 PL_utf8_totitle = Nullsv;
630 PL_utf8_tolower = Nullsv;
b4e400f9 631 PL_utf8_tofold = Nullsv;
82686b01
JH		 632 PL_utf8_idstart = Nullsv;
633 PL_utf8_idcont = Nullsv;
5c831c24 634
971a9dd3
GS		 635 if (!specialWARN(PL_compiling.cop_warnings))
636 SvREFCNT_dec(PL_compiling.cop_warnings);
5c831c24 637 PL_compiling.cop_warnings = Nullsv;
ac27b0f5
NIS		 638 if (!specialCopIO(PL_compiling.cop_io))
639 SvREFCNT_dec(PL_compiling.cop_io);
640 PL_compiling.cop_io = Nullsv;
05ec9bb3
NIS		 641 CopFILE_free(&PL_compiling);
642 CopSTASH_free(&PL_compiling);
5c831c24 643
a0d0e21e 644 /* Prepare to destruct main symbol table. */
5f05dabc 645
3280af22
NIS		 646 hv = PL_defstash;
647 PL_defstash = 0;
a0d0e21e 648 SvREFCNT_dec(hv);
5c831c24
GS		 649 SvREFCNT_dec(PL_curstname);
650 PL_curstname = Nullsv;
a0d0e21e 651
5a844595
GS		 652 /* clear queued errors */
653 SvREFCNT_dec(PL_errors);
654 PL_errors = Nullsv;
655
a0d0e21e 656 FREETMPS;
0453d815 657 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
3280af22 658 if (PL_scopestack_ix != 0)
9014280d 659 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
0453d815 660 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
3280af22
NIS		 661 (long)PL_scopestack_ix);
662 if (PL_savestack_ix != 0)
9014280d 663 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
0453d815 664 "Unbalanced saves: %ld more saves than restores\n",
3280af22
NIS		 665 (long)PL_savestack_ix);
666 if (PL_tmps_floor != -1)
9014280d 667 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
3280af22 668 (long)PL_tmps_floor + 1);
a0d0e21e 669 if (cxstack_ix != -1)
9014280d 670 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
ff0cee69 671 (long)cxstack_ix + 1);
a0d0e21e 672 }
8990e307
LW		 673
674 /* Now absolutely destruct everything, somehow or other, loops or no. */
d33b2eba 675 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
3280af22 676 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
5226ed68
JH		 677
678 /* the 2 is for PL_fdpid and PL_strtab */
679 while (PL_sv_count > 2 && sv_clean_all())
680 ;
681
d33b2eba
GS		 682 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
683 SvFLAGS(PL_fdpid) |= SVt_PVAV;
3280af22
NIS		 684 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
685 SvFLAGS(PL_strtab) |= SVt_PVHV;
d33b2eba 686
d4777f27
GS		 687 AvREAL_off(PL_fdpid); /* no surviving entries */
688 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
d33b2eba
GS		 689 PL_fdpid = Nullav;
690
6c644e78
GS		 691#ifdef HAVE_INTERP_INTERN
692 sys_intern_clear();
693#endif
694
6e72f9df 695 /* Destruct the global string table. */
696 {
697 /* Yell and reset the HeVAL() slots that are still holding refcounts,
698 * so that sv_free() won't fail on them.
699 */
700 I32 riter;
701 I32 max;
702 HE *hent;
703 HE **array;
704
705 riter = 0;
3280af22
NIS		 706 max = HvMAX(PL_strtab);
707 array = HvARRAY(PL_strtab);
6e72f9df 708 hent = array[0];
709 for (;;) {
0453d815 710 if (hent && ckWARN_d(WARN_INTERNAL)) {
9014280d 711 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
0453d815 712 "Unbalanced string table refcount: (%d) for \"%s\"",
6e72f9df 713 HeVAL(hent) - Nullsv, HeKEY(hent));
714 HeVAL(hent) = Nullsv;
715 hent = HeNEXT(hent);
716 }
717 if (!hent) {
718 if (++riter > max)
719 break;
720 hent = array[riter];
721 }
722 }
723 }
3280af22 724 SvREFCNT_dec(PL_strtab);
6e72f9df 725
e652bb2f 726#ifdef USE_ITHREADS
a0739874
DM		 727 /* free the pointer table used for cloning */
728 ptr_table_free(PL_ptr_table);
53186e96 729#endif
a0739874 730
d33b2eba
GS		 731 /* free special SVs */
732
733 SvREFCNT(&PL_sv_yes) = 0;
734 sv_clear(&PL_sv_yes);
735 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 736 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS		 737
738 SvREFCNT(&PL_sv_no) = 0;
739 sv_clear(&PL_sv_no);
740 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 741 SvFLAGS(&PL_sv_no) = 0;
01724ea0 742
9f375a43
DM		 743 {
744 int i;
745 for (i=0; i<=2; i++) {
746 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
747 sv_clear(PERL_DEBUG_PAD(i));
748 SvANY(PERL_DEBUG_PAD(i)) = NULL;
749 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
750 }
751 }
752
0453d815 753 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 754 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 755
eba0f806
DM		 756#ifdef DEBUG_LEAKING_SCALARS
757 if (PL_sv_count != 0) {
758 SV* sva;
759 SV* sv;
760 register SV* svend;
761
762 for (sva = PL_sv_arenaroot; sva; sva = (SV*)SvANY(sva)) {
763 svend = &sva[SvREFCNT(sva)];
764 for (sv = sva + 1; sv < svend; ++sv) {
765 if (SvTYPE(sv) != SVTYPEMASK) {
766 PerlIO_printf(Perl_debug_log, "leaked: 0x%p\n", sv);
767 }
768 }
769 }
770 }
771#endif
772
773
56a2bab7 774#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS		 775 /* No more IO - including error messages ! */
776 PerlIO_cleanup(aTHX);
777#endif
778
9f4bd222
NIS		 779 /* sv_undef needs to stay immortal until after PerlIO_cleanup
780 as currently layers use it rather than Nullsv as a marker
781 for no arg - and will try and SvREFCNT_dec it.
782 */
783 SvREFCNT(&PL_sv_undef) = 0;
784 SvREADONLY_off(&PL_sv_undef);
785
3280af22 786 Safefree(PL_origfilename);
3280af22 787 Safefree(PL_reg_start_tmp);
5c5e4c24
IZ		 788 if (PL_reg_curpm)
789 Safefree(PL_reg_curpm);
82ba1be6 790 Safefree(PL_reg_poscache);
3280af22
NIS		 791 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
792 Safefree(PL_op_mask);
cf36064f
GS		 793 Safefree(PL_psig_ptr);
794 Safefree(PL_psig_name);
2c2666fc 795 Safefree(PL_bitcount);
ce08f86c 796 Safefree(PL_psig_pend);
6e72f9df 797 nuke_stacks();
3280af22 798 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
ac27b0f5 799
a0d0e21e 800 DEBUG_P(debprofdump());
d33b2eba 801
e5dd39fc 802#ifdef USE_REENTRANT_API
10bc17b6 803 Perl_reentrant_free(aTHX);
e5dd39fc
AB		 804#endif
805
612f20c3
GS		 806 sv_free_arenas();
807
fc36a67e 808 /* As the absolutely last thing, free the non-arena SV for mess() */
809
3280af22 810 if (PL_mess_sv) {
9c63abab
GS		 811 /* it could have accumulated taint magic */
812 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
813 MAGIC* mg;
814 MAGIC* moremagic;
815 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
816 moremagic = mg->mg_moremagic;
14befaf4
DM		 817 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
818 && mg->mg_len >= 0)
9c63abab
GS		 819 Safefree(mg->mg_ptr);
820 Safefree(mg);
821 }
822 }
fc36a67e 823 /* we know that type >= SVt_PV */
155aba94 824 (void)SvOOK_off(PL_mess_sv);
3280af22
NIS		 825 Safefree(SvPVX(PL_mess_sv));
826 Safefree(SvANY(PL_mess_sv));
827 Safefree(PL_mess_sv);
828 PL_mess_sv = Nullsv;
fc36a67e 829 }
31d77e54 830 return STATUS_NATIVE_EXPORT;
79072805
LW		 831}
832
954c1994
GS		 833/*
834=for apidoc perl_free
835
836Releases a Perl interpreter. See L<perlembed>.
837
838=cut
839*/
840
79072805 841void
0cb96387 842perl_free(pTHXx)
79072805 843{
acfe0abc 844#if defined(WIN32) || defined(NETWARE)
ce3e5b80 845# if defined(PERL_IMPLICIT_SYS)
acfe0abc
GS		 846# ifdef NETWARE
847 void *host = nw_internal_host;
848# else
849 void *host = w32_internal_host;
850# endif
ce3e5b80 851 PerlMem_free(aTHXx);
acfe0abc 852# ifdef NETWARE
011f1a1a 853 nw_delete_internal_host(host);
acfe0abc
GS		 854# else
855 win32_delete_internal_host(host);
856# endif
1c0ca838
GS		 857# else
858 PerlMem_free(aTHXx);
859# endif
acfe0abc
GS		 860#else
861 PerlMem_free(aTHXx);
76e3520e 862#endif
79072805
LW		 863}
864
4b556e6c 865void
864dbfa3 866Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 867{
3280af22
NIS		 868 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
869 PL_exitlist[PL_exitlistlen].fn = fn;
870 PL_exitlist[PL_exitlistlen].ptr = ptr;
871 ++PL_exitlistlen;
4b556e6c
JD		 872}
873
954c1994
GS		 874/*
875=for apidoc perl_parse
876
877Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
878
879=cut
880*/
881
79072805 882int
0cb96387 883perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 884{
6224f72b 885 I32 oldscope;
6224f72b 886 int ret;
db36c5a1 887 dJMPENV;
4d1ff10f 888#ifdef USE_5005THREADS
cea2e8a9
GS		 889 dTHX;
890#endif
8d063cd8 891
a687059c
LW		 892#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
893#ifdef IAMSUID
894#undef IAMSUID
cea2e8a9 895 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
a687059c
LW		 896setuid perl scripts securely.\n");
897#endif
898#endif
899
3280af22 900 PL_origargc = argc;
e2975953 901 PL_origargv = argv;
a0d0e21e 902
3280af22 903 if (PL_do_undump) {
a0d0e21e
LW		 904
905 /* Come here if running an undumped a.out. */
906
3280af22
NIS		 907 PL_origfilename = savepv(argv[0]);
908 PL_do_undump = FALSE;
a0d0e21e 909 cxstack_ix = -1; /* start label stack again */
748a9306 910 init_ids();
a0d0e21e
LW		 911 init_postdump_symbols(argc,argv,env);
912 return 0;
913 }
914
3280af22 915 if (PL_main_root) {
3280af22
NIS		 916 op_free(PL_main_root);
917 PL_main_root = Nullop;
ff0cee69 918 }
3280af22
NIS		 919 PL_main_start = Nullop;
920 SvREFCNT_dec(PL_main_cv);
921 PL_main_cv = Nullcv;
79072805 922
3280af22
NIS		 923 time(&PL_basetime);
924 oldscope = PL_scopestack_ix;
599cee73 925 PL_dowarn = G_WARN_OFF;
f86702cc 926
14dd3ad8
GS		 927#ifdef PERL_FLEXIBLE_EXCEPTIONS
928 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
929#else
930 JMPENV_PUSH(ret);
931#endif
6224f72b 932 switch (ret) {
312caa8e 933 case 0:
14dd3ad8
GS		 934#ifndef PERL_FLEXIBLE_EXCEPTIONS
935 parse_body(env,xsinit);
936#endif
7d30b5c4
GS		 937 if (PL_checkav)
938 call_list(oldscope, PL_checkav);
14dd3ad8
GS		 939 ret = 0;
940 break;
6224f72b
GS		 941 case 1:
942 STATUS_ALL_FAILURE;
943 /* FALL THROUGH */
944 case 2:
945 /* my_exit() was called */
3280af22 946 while (PL_scopestack_ix > oldscope)
6224f72b
GS		 947 LEAVE;
948 FREETMPS;
3280af22 949 PL_curstash = PL_defstash;
7d30b5c4
GS		 950 if (PL_checkav)
951 call_list(oldscope, PL_checkav);
14dd3ad8
GS		 952 ret = STATUS_NATIVE_EXPORT;
953 break;
6224f72b 954 case 3:
bf49b057 955 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS		 956 ret = 1;
957 break;
6224f72b 958 }
14dd3ad8
GS		 959 JMPENV_POP;
960 return ret;
961}
962
963#ifdef PERL_FLEXIBLE_EXCEPTIONS
964STATIC void *
965S_vparse_body(pTHX_ va_list args)
966{
967 char **env = va_arg(args, char**);
968 XSINIT_t xsinit = va_arg(args, XSINIT_t);
969
970 return parse_body(env, xsinit);
312caa8e 971}
14dd3ad8 972#endif
312caa8e
CS		 973
974STATIC void *
14dd3ad8 975S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 976{
312caa8e
CS		 977 int argc = PL_origargc;
978 char **argv = PL_origargv;
312caa8e
CS		 979 char *scriptname = NULL;
980 int fdscript = -1;
981 VOL bool dosearch = FALSE;
982 char *validarg = "";
312caa8e
CS		 983 register SV *sv;
984 register char *s;
cf756827 985 char *cddir = Nullch;
312caa8e 986
3280af22 987 sv_setpvn(PL_linestr,"",0);
79cb57f6 988 sv = newSVpvn("",0); /* first used for -I flags */
6224f72b
GS		 989 SAVEFREESV(sv);
990 init_main_stash();
54310121 991
6224f72b
GS		 992 for (argc--,argv++; argc > 0; argc--,argv++) {
993 if (argv[0][0] != '-' || !argv[0][1])
994 break;
995#ifdef DOSUID
996 if (*validarg)
997 validarg = " PHOOEY ";
998 else
999 validarg = argv[0];
13281fa4 1000#endif
6224f72b
GS		 1001 s = argv[0]+1;
1002 reswitch:
1003 switch (*s) {
729a02f2 1004 case 'C':
1d5472a9
GS		 1005#ifndef PERL_STRICT_CR
1006 case '\r':
1007#endif
6224f72b
GS		 1008 case ' ':
1009 case '0':
1010 case 'F':
1011 case 'a':
1012 case 'c':
1013 case 'd':
1014 case 'D':
1015 case 'h':
1016 case 'i':
1017 case 'l':
1018 case 'M':
1019 case 'm':
1020 case 'n':
1021 case 'p':
1022 case 's':
1023 case 'u':
1024 case 'U':
1025 case 'v':
599cee73
PM		 1026 case 'W':
1027 case 'X':
6224f72b 1028 case 'w':
06492da6 1029 case 'A':
155aba94 1030 if ((s = moreswitches(s)))
6224f72b
GS		 1031 goto reswitch;
1032 break;
33b78306 1033
1dbad523 1034 case 't':
317ea90d
MS		 1035 if( !PL_tainting ) {
1036 PL_taint_warn = TRUE;
1037 PL_tainting = TRUE;
1038 }
1039 s++;
1040 goto reswitch;
6224f72b 1041 case 'T':
3280af22 1042 PL_tainting = TRUE;
317ea90d 1043 PL_taint_warn = FALSE;
6224f72b
GS		 1044 s++;
1045 goto reswitch;
f86702cc 1046
6224f72b 1047 case 'e':
bf4acbe4
GS		 1048#ifdef MACOS_TRADITIONAL
1049 /* ignore -e for Dev:Pseudo argument */
1050 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
e55ac0fa 1051 break;
bf4acbe4 1052#endif
3280af22 1053 if (PL_euid != PL_uid || PL_egid != PL_gid)
cea2e8a9 1054 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
3280af22 1055 if (!PL_e_script) {
79cb57f6 1056 PL_e_script = newSVpvn("",0);
0cb96387 1057 filter_add(read_e_script, NULL);
6224f72b
GS		 1058 }
1059 if (*++s)
3280af22 1060 sv_catpv(PL_e_script, s);
6224f72b 1061 else if (argv[1]) {
3280af22 1062 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS		 1063 argc--,argv++;
1064 }
1065 else
cea2e8a9 1066 Perl_croak(aTHX_ "No code specified for -e");
3280af22 1067 sv_catpv(PL_e_script, "\n");
6224f72b 1068 break;
afe37c7d 1069
6224f72b
GS		 1070 case 'I': /* -I handled both here and in moreswitches() */
1071 forbid_setid("-I");
1072 if (!*++s && (s=argv[1]) != Nullch) {
1073 argc--,argv++;
1074 }
6224f72b 1075 if (s && *s) {
0df16ed7
GS		 1076 char *p;
1077 STRLEN len = strlen(s);
1078 p = savepvn(s, len);
574c798a 1079 incpush(p, TRUE, TRUE, FALSE);
0df16ed7
GS		 1080 sv_catpvn(sv, "-I", 2);
1081 sv_catpvn(sv, p, len);
1082 sv_catpvn(sv, " ", 1);
6224f72b 1083 Safefree(p);
0df16ed7
GS		 1084 }
1085 else
a67e862a 1086 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b
GS		 1087 break;
1088 case 'P':
1089 forbid_setid("-P");
3280af22 1090 PL_preprocess = TRUE;
6224f72b
GS		 1091 s++;
1092 goto reswitch;
1093 case 'S':
1094 forbid_setid("-S");
1095 dosearch = TRUE;
1096 s++;
1097 goto reswitch;
1098 case 'V':
3280af22
NIS		 1099 if (!PL_preambleav)
1100 PL_preambleav = newAV();
1101 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
6224f72b 1102 if (*++s != ':') {
3280af22 1103 PL_Sv = newSVpv("print myconfig();",0);
6224f72b 1104#ifdef VMS
6b88bc9c 1105 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
6224f72b 1106#else
3280af22 1107 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
6224f72b 1108#endif
3280af22 1109 sv_catpv(PL_Sv,"\" Compile-time options:");
6224f72b 1110# ifdef DEBUGGING
3280af22 1111 sv_catpv(PL_Sv," DEBUGGING");
6224f72b 1112# endif
6224f72b 1113# ifdef MULTIPLICITY
8f872242 1114 sv_catpv(PL_Sv," MULTIPLICITY");
6224f72b 1115# endif
4d1ff10f
AB		 1116# ifdef USE_5005THREADS
1117 sv_catpv(PL_Sv," USE_5005THREADS");
b363f7ed 1118# endif
ac5e8965
JH		 1119# ifdef USE_ITHREADS
1120 sv_catpv(PL_Sv," USE_ITHREADS");
1121# endif
10cc9d2a
JH		 1122# ifdef USE_64_BIT_INT
1123 sv_catpv(PL_Sv," USE_64_BIT_INT");
1124# endif
1125# ifdef USE_64_BIT_ALL
1126 sv_catpv(PL_Sv," USE_64_BIT_ALL");
ac5e8965
JH		 1127# endif
1128# ifdef USE_LONG_DOUBLE
1129 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1130# endif
53430762
JH		 1131# ifdef USE_LARGE_FILES
1132 sv_catpv(PL_Sv," USE_LARGE_FILES");
1133# endif
ac5e8965
JH		 1134# ifdef USE_SOCKS
1135 sv_catpv(PL_Sv," USE_SOCKS");
1136# endif
b363f7ed
GS		 1137# ifdef PERL_IMPLICIT_CONTEXT
1138 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1139# endif
1140# ifdef PERL_IMPLICIT_SYS
1141 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1142# endif
3280af22 1143 sv_catpv(PL_Sv,"\\n\",");
b363f7ed 1144
6224f72b
GS		 1145#if defined(LOCAL_PATCH_COUNT)
1146 if (LOCAL_PATCH_COUNT > 0) {
1147 int i;
3280af22 1148 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
6224f72b 1149 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
3280af22 1150 if (PL_localpatches[i])
cea2e8a9 1151 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
6224f72b
GS		 1152 }
1153 }
1154#endif
cea2e8a9 1155 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
6224f72b
GS		 1156#ifdef __DATE__
1157# ifdef __TIME__
cea2e8a9 1158 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
6224f72b 1159# else
cea2e8a9 1160 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
6224f72b
GS		 1161# endif
1162#endif
3280af22 1163 sv_catpv(PL_Sv, "; \
6224f72b 1164$\"=\"\\n \"; \
69fcd688
JH		 1165@env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; ");
1166#ifdef __CYGWIN__
1167 sv_catpv(PL_Sv,"\
1168push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
1169#endif
1170 sv_catpv(PL_Sv, "\
6224f72b
GS		 1171print \" \\%ENV:\\n @env\\n\" if @env; \
1172print \" \\@INC:\\n @INC\\n\";");
1173 }
1174 else {
3280af22
NIS		 1175 PL_Sv = newSVpv("config_vars(qw(",0);
1176 sv_catpv(PL_Sv, ++s);
1177 sv_catpv(PL_Sv, "))");
6224f72b
GS		 1178 s += strlen(s);
1179 }
3280af22 1180 av_push(PL_preambleav, PL_Sv);
6224f72b
GS		 1181 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1182 goto reswitch;
1183 case 'x':
3280af22 1184 PL_doextract = TRUE;
6224f72b
GS		 1185 s++;
1186 if (*s)
f4c556ac 1187 cddir = s;
6224f72b
GS		 1188 break;
1189 case 0:
1190 break;
1191 case '-':
1192 if (!*++s || isSPACE(*s)) {
1193 argc--,argv++;
1194 goto switch_end;
1195 }
1196 /* catch use of gnu style long options */
1197 if (strEQ(s, "version")) {
1198 s = "v";
1199 goto reswitch;
1200 }
1201 if (strEQ(s, "help")) {
1202 s = "h";
1203 goto reswitch;
1204 }
1205 s--;
1206 /* FALL THROUGH */
1207 default:
cea2e8a9 1208 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW		 1209 }
1210 }
6224f72b 1211 switch_end:
7f9e821f 1212 sv_setsv(get_sv("/", TRUE), PL_rs);
54310121 1213
f675dbe5
CB		 1214 if (
1215#ifndef SECURE_INTERNAL_GETENV
1216 !PL_tainting &&
1217#endif
cf756827 1218 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1219 {
cf756827 1220 char *popt = s;
74288ac8
GS		 1221 while (isSPACE(*s))
1222 s++;
317ea90d 1223 if (*s == '-' && *(s+1) == 'T') {
74288ac8 1224 PL_tainting = TRUE;
317ea90d
MS		 1225 PL_taint_warn = FALSE;
1226 }
74288ac8 1227 else {
cf756827 1228 char *popt_copy = Nullch;
74288ac8 1229 while (s && *s) {
4ea8f8fb 1230 char *d;
74288ac8
GS		 1231 while (isSPACE(*s))
1232 s++;
1233 if (*s == '-') {
1234 s++;
1235 if (isSPACE(*s))
1236 continue;
1237 }
4ea8f8fb 1238 d = s;
74288ac8
GS		 1239 if (!*s)
1240 break;
06492da6 1241 if (!strchr("DIMUdmtwA", *s))
cea2e8a9 1242 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS		 1243 while (++s && *s) {
1244 if (isSPACE(*s)) {
cf756827
GS		 1245 if (!popt_copy) {
1246 popt_copy = SvPVX(sv_2mortal(newSVpv(popt,0)));
1247 s = popt_copy + (s - popt);
1248 d = popt_copy + (d - popt);
1249 }
4ea8f8fb
MS		 1250 *s++ = '\0';
1251 break;
1252 }
1253 }
1c4db469 1254 if (*d == 't') {
317ea90d
MS		 1255 if( !PL_tainting ) {
1256 PL_taint_warn = TRUE;
1257 PL_tainting = TRUE;
1258 }
1c4db469
RGS		 1259 } else {
1260 moreswitches(d);
1261 }
6224f72b 1262 }
6224f72b
GS		 1263 }
1264 }
a0d0e21e 1265
317ea90d
MS		 1266 if (PL_taint_warn && PL_dowarn != G_WARN_ALL_OFF) {
1267 PL_compiling.cop_warnings = newSVpvn(WARN_TAINTstring, WARNsize);
1268 }
1269
6224f72b
GS		 1270 if (!scriptname)
1271 scriptname = argv[0];
3280af22 1272 if (PL_e_script) {
6224f72b
GS		 1273 argc++,argv--;
1274 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1275 }
1276 else if (scriptname == Nullch) {
1277#ifdef MSDOS
1278 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1279 moreswitches("h");
1280#endif
1281 scriptname = "-";
1282 }
1283
1284 init_perllib();
1285
1286 open_script(scriptname,dosearch,sv,&fdscript);
1287
1288 validate_suid(validarg, scriptname,fdscript);
1289
64ca3a65 1290#ifndef PERL_MICRO
0b5b802d
GS		 1291#if defined(SIGCHLD) || defined(SIGCLD)
1292 {
1293#ifndef SIGCHLD
1294# define SIGCHLD SIGCLD
1295#endif
1296 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1297 if (sigstate == SIG_IGN) {
1298 if (ckWARN(WARN_SIGNAL))
9014280d 1299 Perl_warner(aTHX_ packWARN(WARN_SIGNAL),
0b5b802d
GS		 1300 "Can't ignore signal CHLD, forcing to default");
1301 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1302 }
1303 }
1304#endif
64ca3a65 1305#endif
0b5b802d 1306
bf4acbe4
GS		 1307#ifdef MACOS_TRADITIONAL
1308 if (PL_doextract || gMacPerl_AlwaysExtract) {
1309#else
f4c556ac 1310 if (PL_doextract) {
bf4acbe4 1311#endif
6224f72b 1312 find_beginning();
f4c556ac
GS		 1313 if (cddir && PerlDir_chdir(cddir) < 0)
1314 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1315
1316 }
6224f72b 1317
3280af22
NIS		 1318 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1319 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1320 CvUNIQUE_on(PL_compcv);
1321
dd2155a4 1322 CvPADLIST(PL_compcv) = pad_new(0);
4d1ff10f 1323#ifdef USE_5005THREADS
533c011a
NIS		 1324 CvOWNER(PL_compcv) = 0;
1325 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1326 MUTEX_INIT(CvMUTEXP(PL_compcv));
4d1ff10f 1327#endif /* USE_5005THREADS */
6224f72b 1328
0c4f7ff0 1329 boot_core_PerlIO();
6224f72b 1330 boot_core_UNIVERSAL();
9a34ef1d 1331#ifndef PERL_MICRO
09bef843 1332 boot_core_xsutils();
9a34ef1d 1333#endif
6224f72b
GS		 1334
1335 if (xsinit)
acfe0abc 1336 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 1337#ifndef PERL_MICRO
ed79a026 1338#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
c5be433b 1339 init_os_extras();
6224f72b 1340#endif
64ca3a65 1341#endif
6224f72b 1342
29209bc5 1343#ifdef USE_SOCKS
1b9c9cf5
DH		 1344# ifdef HAS_SOCKS5_INIT
1345 socks5_init(argv[0]);
1346# else
29209bc5 1347 SOCKSinit(argv[0]);
1b9c9cf5 1348# endif
ac27b0f5 1349#endif
29209bc5 1350
6224f72b
GS		 1351 init_predump_symbols();
1352 /* init_postdump_symbols not currently designed to be called */
1353 /* more than once (ENV isn't cleared first, for example) */
1354 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 1355 if (!PL_do_undump)
6224f72b
GS		 1356 init_postdump_symbols(argc,argv,env);
1357
a05d7ebb
JH		 1358 /* PL_unicode is turned on by -C or by $ENV{PERL_UNICODE}.
1359 * PL_utf8locale is conditionally turned on by
085a54d9 1360 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 1361 * look like the user wants to use UTF-8. */
06e66572
JH		 1362 if (PL_unicode) {
1363 /* Requires init_predump_symbols(). */
a05d7ebb 1364 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH		 1365 IO* io;
1366 PerlIO* fp;
1367 SV* sv;
1368
a05d7ebb 1369 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 1370 * and the default open disciplines. */
a05d7ebb
JH		 1371 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
1372 PL_stdingv && (io = GvIO(PL_stdingv)) &&
1373 (fp = IoIFP(io)))
1374 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
1375 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
1376 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
1377 (fp = IoOFP(io)))
1378 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
1379 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
1380 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
1381 (fp = IoOFP(io)))
1382 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
1383 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
1384 (sv = GvSV(gv_fetchpv("\017PEN", TRUE, SVt_PV)))) {
1385 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
1386 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
1387 if (in) {
1388 if (out)
1389 sv_setpvn(sv, ":utf8\0:utf8", 11);
1390 else
1391 sv_setpvn(sv, ":utf8\0", 6);
1392 }
1393 else if (out)
1394 sv_setpvn(sv, "\0:utf8", 6);
1395 SvSETMAGIC(sv);
1396 }
b310b053
JH		 1397 }
1398 }
1399
4ffa73a3
JH		 1400 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
1401 if (strEQ(s, "unsafe"))
1402 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
1403 else if (strEQ(s, "safe"))
1404 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
1405 else
1406 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
1407 }
1408
6224f72b
GS		 1409 init_lexer();
1410
1411 /* now parse the script */
1412
93189314 1413 SETERRNO(0,SS_NORMAL);
3280af22 1414 PL_error_count = 0;
bf4acbe4
GS		 1415#ifdef MACOS_TRADITIONAL
1416 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1417 if (PL_minus_c)
1418 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1419 else {
1420 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1421 MacPerl_MPWFileName(PL_origfilename));
1422 }
1423 }
1424#else
3280af22
NIS		 1425 if (yyparse() || PL_error_count) {
1426 if (PL_minus_c)
cea2e8a9 1427 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 1428 else {
cea2e8a9 1429 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 1430 PL_origfilename);
6224f72b
GS		 1431 }
1432 }
bf4acbe4 1433#endif
57843af0 1434 CopLINE_set(PL_curcop, 0);
3280af22
NIS		 1435 PL_curstash = PL_defstash;
1436 PL_preprocess = FALSE;
1437 if (PL_e_script) {
1438 SvREFCNT_dec(PL_e_script);
1439 PL_e_script = Nullsv;
6224f72b
GS		 1440 }
1441
3280af22 1442 if (PL_do_undump)
6224f72b
GS		 1443 my_unexec();
1444
57843af0
GS		 1445 if (isWARN_ONCE) {
1446 SAVECOPFILE(PL_curcop);
1447 SAVECOPLINE(PL_curcop);
3280af22 1448 gv_check(PL_defstash);
57843af0 1449 }
6224f72b
GS		 1450
1451 LEAVE;
1452 FREETMPS;
1453
1454#ifdef MYMALLOC
1455 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1456 dump_mstats("after compilation:");
1457#endif
1458
1459 ENTER;
3280af22 1460 PL_restartop = 0;
312caa8e 1461 return NULL;
6224f72b
GS		 1462}
1463
954c1994
GS		 1464/*
1465=for apidoc perl_run
1466
1467Tells a Perl interpreter to run. See L<perlembed>.
1468
1469=cut
1470*/
1471
6224f72b 1472int
0cb96387 1473perl_run(pTHXx)
6224f72b 1474{
6224f72b 1475 I32 oldscope;
14dd3ad8 1476 int ret = 0;
db36c5a1 1477 dJMPENV;
4d1ff10f 1478#ifdef USE_5005THREADS
cea2e8a9
GS		 1479 dTHX;
1480#endif
6224f72b 1481
3280af22 1482 oldscope = PL_scopestack_ix;
96e176bf
CL		 1483#ifdef VMS
1484 VMSISH_HUSHED = 0;
1485#endif
6224f72b 1486
14dd3ad8 1487#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1488 redo_body:
14dd3ad8
GS		 1489 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1490#else
1491 JMPENV_PUSH(ret);
1492#endif
6224f72b
GS		 1493 switch (ret) {
1494 case 1:
1495 cxstack_ix = -1; /* start context stack again */
312caa8e 1496 goto redo_body;
14dd3ad8
GS		 1497 case 0: /* normal completion */
1498#ifndef PERL_FLEXIBLE_EXCEPTIONS
1499 redo_body:
1500 run_body(oldscope);
1501#endif
1502 /* FALL THROUGH */
1503 case 2: /* my_exit() */
3280af22 1504 while (PL_scopestack_ix > oldscope)
6224f72b
GS		 1505 LEAVE;
1506 FREETMPS;
3280af22 1507 PL_curstash = PL_defstash;
3a1ee7e8 1508 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
31d77e54
AB		 1509 PL_endav && !PL_minus_c)
1510 call_list(oldscope, PL_endav);
6224f72b
GS		 1511#ifdef MYMALLOC
1512 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1513 dump_mstats("after execution: ");
1514#endif
14dd3ad8
GS		 1515 ret = STATUS_NATIVE_EXPORT;
1516 break;
6224f72b 1517 case 3:
312caa8e
CS		 1518 if (PL_restartop) {
1519 POPSTACK_TO(PL_mainstack);
1520 goto redo_body;
6224f72b 1521 }
bf49b057 1522 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 1523 FREETMPS;
14dd3ad8
GS		 1524 ret = 1;
1525 break;
6224f72b
GS		 1526 }
1527
14dd3ad8
GS		 1528 JMPENV_POP;
1529 return ret;
312caa8e
CS		 1530}
1531
14dd3ad8 1532#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1533STATIC void *
14dd3ad8 1534S_vrun_body(pTHX_ va_list args)
312caa8e 1535{
312caa8e
CS		 1536 I32 oldscope = va_arg(args, I32);
1537
14dd3ad8
GS		 1538 return run_body(oldscope);
1539}
1540#endif
1541
1542
1543STATIC void *
1544S_run_body(pTHX_ I32 oldscope)
1545{
6224f72b 1546 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 1547 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 1548
3280af22 1549 if (!PL_restartop) {
6224f72b
GS		 1550 DEBUG_x(dump_all());
1551 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
b900a521
JH		 1552 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1553 PTR2UV(thr)));
6224f72b 1554
3280af22 1555 if (PL_minus_c) {
bf4acbe4 1556#ifdef MACOS_TRADITIONAL
e69a2255
JH		 1557 PerlIO_printf(Perl_error_log, "%s%s syntax OK\n",
1558 (gMacPerl_ErrorFormat ? "# " : ""),
1559 MacPerl_MPWFileName(PL_origfilename));
bf4acbe4 1560#else
bf49b057 1561 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
bf4acbe4 1562#endif
6224f72b
GS		 1563 my_exit(0);
1564 }
3280af22 1565 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 1566 sv_setiv(PL_DBsingle, 1);
3280af22
NIS		 1567 if (PL_initav)
1568 call_list(oldscope, PL_initav);
6224f72b
GS		 1569 }
1570
1571 /* do it */
1572
3280af22 1573 if (PL_restartop) {
533c011a 1574 PL_op = PL_restartop;
3280af22 1575 PL_restartop = 0;
cea2e8a9 1576 CALLRUNOPS(aTHX);
6224f72b 1577 }
3280af22
NIS		 1578 else if (PL_main_start) {
1579 CvDEPTH(PL_main_cv) = 1;
533c011a 1580 PL_op = PL_main_start;
cea2e8a9 1581 CALLRUNOPS(aTHX);
6224f72b
GS		 1582 }
1583
f6b3007c
JH		 1584 my_exit(0);
1585 /* NOTREACHED */
312caa8e 1586 return NULL;
6224f72b
GS		 1587}
1588
954c1994 1589/*
ccfc67b7
JH		 1590=head1 SV Manipulation Functions
1591
954c1994
GS		 1592=for apidoc p||get_sv
1593
1594Returns the SV of the specified Perl scalar. If C<create> is set and the
1595Perl variable does not exist then it will be created. If C<create> is not
1596set and the variable does not exist then NULL is returned.
1597
1598=cut
1599*/
1600
6224f72b 1601SV*
864dbfa3 1602Perl_get_sv(pTHX_ const char *name, I32 create)
6224f72b
GS		 1603{
1604 GV *gv;
4d1ff10f 1605#ifdef USE_5005THREADS
6224f72b
GS		 1606 if (name[1] == '\0' && !isALPHA(name[0])) {
1607 PADOFFSET tmp = find_threadsv(name);
411caa50 1608 if (tmp != NOT_IN_PAD)
6224f72b 1609 return THREADSV(tmp);
6224f72b 1610 }
4d1ff10f 1611#endif /* USE_5005THREADS */
6224f72b
GS		 1612 gv = gv_fetchpv(name, create, SVt_PV);
1613 if (gv)
1614 return GvSV(gv);
1615 return Nullsv;
1616}
1617
954c1994 1618/*
ccfc67b7
JH		 1619=head1 Array Manipulation Functions
1620
954c1994
GS		 1621=for apidoc p||get_av
1622
1623Returns the AV of the specified Perl array. If C<create> is set and the
1624Perl variable does not exist then it will be created. If C<create> is not
1625set and the variable does not exist then NULL is returned.
1626
1627=cut
1628*/
1629
6224f72b 1630AV*
864dbfa3 1631Perl_get_av(pTHX_ const char *name, I32 create)
6224f72b
GS		 1632{
1633 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1634 if (create)
1635 return GvAVn(gv);
1636 if (gv)
1637 return GvAV(gv);
1638 return Nullav;
1639}
1640
954c1994 1641/*
ccfc67b7
JH		 1642=head1 Hash Manipulation Functions
1643
954c1994
GS		 1644=for apidoc p||get_hv
1645
1646Returns the HV of the specified Perl hash. If C<create> is set and the
1647Perl variable does not exist then it will be created. If C<create> is not
1648set and the variable does not exist then NULL is returned.
1649
1650=cut
1651*/
1652
6224f72b 1653HV*
864dbfa3 1654Perl_get_hv(pTHX_ const char *name, I32 create)
6224f72b 1655{
a0d0e21e
LW		 1656 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1657 if (create)
1658 return GvHVn(gv);
1659 if (gv)
1660 return GvHV(gv);
1661 return Nullhv;
1662}
1663
954c1994 1664/*
ccfc67b7
JH		 1665=head1 CV Manipulation Functions
1666
954c1994
GS		 1667=for apidoc p||get_cv
1668
1669Returns the CV of the specified Perl subroutine. If C<create> is set and
1670the Perl subroutine does not exist then it will be declared (which has the
1671same effect as saying C<sub name;>). If C<create> is not set and the
1672subroutine does not exist then NULL is returned.
1673
1674=cut
1675*/
1676
a0d0e21e 1677CV*
864dbfa3 1678Perl_get_cv(pTHX_ const char *name, I32 create)
a0d0e21e
LW		 1679{
1680 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
b099ddc0 1681 /* XXX unsafe for threads if eval_owner isn't held */
f6ec51f7
GS		 1682 /* XXX this is probably not what they think they're getting.
1683 * It has the same effect as "sub name;", i.e. just a forward
1684 * declaration! */
8ebc5c01 1685 if (create && !GvCVu(gv))
774d564b 1686 return newSUB(start_subparse(FALSE, 0),
a0d0e21e 1687 newSVOP(OP_CONST, 0, newSVpv(name,0)),
4633a7c4 1688 Nullop,
a0d0e21e
LW		 1689 Nullop);
1690 if (gv)
8ebc5c01 1691 return GvCVu(gv);
a0d0e21e
LW		 1692 return Nullcv;
1693}
1694
79072805
LW		 1695/* Be sure to refetch the stack pointer after calling these routines. */
1696
954c1994 1697/*
ccfc67b7
JH		 1698
1699=head1 Callback Functions
1700
954c1994
GS		 1701=for apidoc p||call_argv
1702
1703Performs a callback to the specified Perl sub. See L<perlcall>.
1704
1705=cut
1706*/
1707
a0d0e21e 1708I32
864dbfa3 1709Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 1710
8ac85365
NIS		 1711 /* See G_* flags in cop.h */
1712 /* null terminated arg list */
8990e307 1713{
a0d0e21e 1714 dSP;
8990e307 1715
924508f0 1716 PUSHMARK(SP);
a0d0e21e 1717 if (argv) {
8990e307 1718 while (*argv) {
a0d0e21e 1719 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
8990e307
LW		 1720 argv++;
1721 }
a0d0e21e 1722 PUTBACK;
8990e307 1723 }
864dbfa3 1724 return call_pv(sub_name, flags);
8990e307
LW		 1725}
1726
954c1994
GS		 1727/*
1728=for apidoc p||call_pv
1729
1730Performs a callback to the specified Perl sub. See L<perlcall>.
1731
1732=cut
1733*/
1734
a0d0e21e 1735I32
864dbfa3 1736Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS		 1737 /* name of the subroutine */
1738 /* See G_* flags in cop.h */
a0d0e21e 1739{
864dbfa3 1740 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
a0d0e21e
LW		 1741}
1742
954c1994
GS		 1743/*
1744=for apidoc p||call_method
1745
1746Performs a callback to the specified Perl method. The blessed object must
1747be on the stack. See L<perlcall>.
1748
1749=cut
1750*/
1751
a0d0e21e 1752I32
864dbfa3 1753Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS		 1754 /* name of the subroutine */
1755 /* See G_* flags in cop.h */
a0d0e21e 1756{
968b3946 1757 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
a0d0e21e
LW		 1758}
1759
1760/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS		 1761/*
1762=for apidoc p||call_sv
1763
1764Performs a callback to the Perl sub whose name is in the SV. See
1765L<perlcall>.
1766
1767=cut
1768*/
1769
a0d0e21e 1770I32
864dbfa3 1771Perl_call_sv(pTHX_ SV *sv, I32 flags)
8ac85365 1772 /* See G_* flags in cop.h */
a0d0e21e 1773{
924508f0 1774 dSP;
a0d0e21e 1775 LOGOP myop; /* fake syntax tree node */
968b3946 1776 UNOP method_op;
aa689395 1777 I32 oldmark;
13689cfe 1778 volatile I32 retval = 0;
a0d0e21e 1779 I32 oldscope;
54310121 1780 bool oldcatch = CATCH_GET;
6224f72b 1781 int ret;
533c011a 1782 OP* oldop = PL_op;
db36c5a1 1783 dJMPENV;
1e422769 1784
a0d0e21e
LW		 1785 if (flags & G_DISCARD) {
1786 ENTER;
1787 SAVETMPS;
1788 }
1789
aa689395 1790 Zero(&myop, 1, LOGOP);
54310121 1791 myop.op_next = Nullop;
f51d4af5 1792 if (!(flags & G_NOARGS))
aa689395 1793 myop.op_flags |= OPf_STACKED;
54310121 1794 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1795 (flags & G_ARRAY) ? OPf_WANT_LIST :
1796 OPf_WANT_SCALAR);
462e5cf6 1797 SAVEOP();
533c011a 1798 PL_op = (OP*)&myop;
aa689395 1799
3280af22
NIS		 1800 EXTEND(PL_stack_sp, 1);
1801 *++PL_stack_sp = sv;
aa689395 1802 oldmark = TOPMARK;
3280af22 1803 oldscope = PL_scopestack_ix;
a0d0e21e 1804
3280af22 1805 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 1806 /* Handle first BEGIN of -d. */
3280af22 1807 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24 1808 /* Try harder, since this may have been a sighandler, thus
1809 * curstash may be meaningless. */
3280af22 1810 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
491527d0 1811 && !(flags & G_NODEBUG))
533c011a 1812 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 1813
968b3946
GS		 1814 if (flags & G_METHOD) {
1815 Zero(&method_op, 1, UNOP);
1816 method_op.op_next = PL_op;
1817 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1818 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
f39d0b86 1819 PL_op = (OP*)&method_op;
968b3946
GS		 1820 }
1821
312caa8e 1822 if (!(flags & G_EVAL)) {
0cdb2077 1823 CATCH_SET(TRUE);
14dd3ad8 1824 call_body((OP*)&myop, FALSE);
312caa8e 1825 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 1826 CATCH_SET(oldcatch);
312caa8e
CS		 1827 }
1828 else {
d78bda3d 1829 myop.op_other = (OP*)&myop;
3280af22 1830 PL_markstack_ptr--;
4633a7c4
LW		 1831 /* we're trying to emulate pp_entertry() here */
1832 {
c09156bb 1833 register PERL_CONTEXT *cx;
54310121 1834 I32 gimme = GIMME_V;
ac27b0f5 1835
4633a7c4
LW		 1836 ENTER;
1837 SAVETMPS;
ac27b0f5 1838
968b3946 1839 push_return(Nullop);
1d76a5c3 1840 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
4633a7c4 1841 PUSHEVAL(cx, 0, 0);
533c011a 1842 PL_eval_root = PL_op; /* Only needed so that goto works right. */
ac27b0f5 1843
faef0170 1844 PL_in_eval = EVAL_INEVAL;
4633a7c4 1845 if (flags & G_KEEPERR)
faef0170 1846 PL_in_eval |= EVAL_KEEPERR;
4633a7c4 1847 else
38a03e6e 1848 sv_setpv(ERRSV,"");
4633a7c4 1849 }
3280af22 1850 PL_markstack_ptr++;
a0d0e21e 1851
14dd3ad8
GS		 1852#ifdef PERL_FLEXIBLE_EXCEPTIONS
1853 redo_body:
1854 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
db36c5a1 1855 (OP*)&myop, FALSE);
14dd3ad8
GS		 1856#else
1857 JMPENV_PUSH(ret);
1858#endif
6224f72b
GS		 1859 switch (ret) {
1860 case 0:
14dd3ad8
GS		 1861#ifndef PERL_FLEXIBLE_EXCEPTIONS
1862 redo_body:
1863 call_body((OP*)&myop, FALSE);
1864#endif
312caa8e
CS		 1865 retval = PL_stack_sp - (PL_stack_base + oldmark);
1866 if (!(flags & G_KEEPERR))
1867 sv_setpv(ERRSV,"");
a0d0e21e 1868 break;
6224f72b 1869 case 1:
f86702cc 1870 STATUS_ALL_FAILURE;
a0d0e21e 1871 /* FALL THROUGH */
6224f72b 1872 case 2:
a0d0e21e 1873 /* my_exit() was called */
3280af22 1874 PL_curstash = PL_defstash;
a0d0e21e 1875 FREETMPS;
14dd3ad8 1876 JMPENV_POP;
cc3604b1 1877 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 1878 Perl_croak(aTHX_ "Callback called exit");
f86702cc 1879 my_exit_jump();
a0d0e21e 1880 /* NOTREACHED */
6224f72b 1881 case 3:
3280af22 1882 if (PL_restartop) {
533c011a 1883 PL_op = PL_restartop;
3280af22 1884 PL_restartop = 0;
312caa8e 1885 goto redo_body;
a0d0e21e 1886 }
3280af22 1887 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW		 1888 if (flags & G_ARRAY)
1889 retval = 0;
1890 else {
1891 retval = 1;
3280af22 1892 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 1893 }
312caa8e 1894 break;
a0d0e21e 1895 }
a0d0e21e 1896
3280af22 1897 if (PL_scopestack_ix > oldscope) {
a0a2876f
LW		 1898 SV **newsp;
1899 PMOP *newpm;
1900 I32 gimme;
c09156bb 1901 register PERL_CONTEXT *cx;
a0a2876f
LW		 1902 I32 optype;
1903
1904 POPBLOCK(cx,newpm);
1905 POPEVAL(cx);
1906 pop_return();
3280af22 1907 PL_curpm = newpm;
a0a2876f 1908 LEAVE;
a0d0e21e 1909 }
14dd3ad8 1910 JMPENV_POP;
a0d0e21e 1911 }
1e422769 1912
a0d0e21e 1913 if (flags & G_DISCARD) {
3280af22 1914 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW		 1915 retval = 0;
1916 FREETMPS;
1917 LEAVE;
1918 }
533c011a 1919 PL_op = oldop;
a0d0e21e
LW		 1920 return retval;
1921}
1922
14dd3ad8 1923#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1924STATIC void *
14dd3ad8 1925S_vcall_body(pTHX_ va_list args)
312caa8e
CS		 1926{
1927 OP *myop = va_arg(args, OP*);
1928 int is_eval = va_arg(args, int);
1929
14dd3ad8 1930 call_body(myop, is_eval);
312caa8e
CS		 1931 return NULL;
1932}
14dd3ad8 1933#endif
312caa8e
CS		 1934
1935STATIC void
14dd3ad8 1936S_call_body(pTHX_ OP *myop, int is_eval)
312caa8e 1937{
312caa8e
CS		 1938 if (PL_op == myop) {
1939 if (is_eval)
f807eda9 1940 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
312caa8e 1941 else
f807eda9 1942 PL_op = Perl_pp_entersub(aTHX); /* this does */
312caa8e
CS		 1943 }
1944 if (PL_op)
cea2e8a9 1945 CALLRUNOPS(aTHX);
312caa8e
CS		 1946}
1947
6e72f9df 1948/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 1949
954c1994
GS		 1950/*
1951=for apidoc p||eval_sv
1952
1953Tells Perl to C<eval> the string in the SV.
1954
1955=cut
1956*/
1957
a0d0e21e 1958I32
864dbfa3 1959Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 1960
8ac85365 1961 /* See G_* flags in cop.h */
a0d0e21e 1962{
924508f0 1963 dSP;
a0d0e21e 1964 UNOP myop; /* fake syntax tree node */
8fa7f367 1965 volatile I32 oldmark = SP - PL_stack_base;
13689cfe 1966 volatile I32 retval = 0;
4633a7c4 1967 I32 oldscope;
6224f72b 1968 int ret;
533c011a 1969 OP* oldop = PL_op;
db36c5a1 1970 dJMPENV;
84902520 1971
4633a7c4
LW		 1972 if (flags & G_DISCARD) {
1973 ENTER;
1974 SAVETMPS;
1975 }
1976
462e5cf6 1977 SAVEOP();
533c011a
NIS		 1978 PL_op = (OP*)&myop;
1979 Zero(PL_op, 1, UNOP);
3280af22
NIS		 1980 EXTEND(PL_stack_sp, 1);
1981 *++PL_stack_sp = sv;
1982 oldscope = PL_scopestack_ix;
79072805 1983
4633a7c4
LW		 1984 if (!(flags & G_NOARGS))
1985 myop.op_flags = OPf_STACKED;
79072805 1986 myop.op_next = Nullop;
6e72f9df 1987 myop.op_type = OP_ENTEREVAL;
54310121 1988 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1989 (flags & G_ARRAY) ? OPf_WANT_LIST :
1990 OPf_WANT_SCALAR);
6e72f9df 1991 if (flags & G_KEEPERR)
1992 myop.op_flags |= OPf_SPECIAL;
4633a7c4 1993
14dd3ad8 1994#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1995 redo_body:
14dd3ad8 1996 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
db36c5a1 1997 (OP*)&myop, TRUE);
14dd3ad8
GS		 1998#else
1999 JMPENV_PUSH(ret);
2000#endif
6224f72b
GS		 2001 switch (ret) {
2002 case 0:
14dd3ad8
GS		 2003#ifndef PERL_FLEXIBLE_EXCEPTIONS
2004 redo_body:
2005 call_body((OP*)&myop,TRUE);
2006#endif
312caa8e
CS		 2007 retval = PL_stack_sp - (PL_stack_base + oldmark);
2008 if (!(flags & G_KEEPERR))
2009 sv_setpv(ERRSV,"");
4633a7c4 2010 break;
6224f72b 2011 case 1:
f86702cc 2012 STATUS_ALL_FAILURE;
4633a7c4 2013 /* FALL THROUGH */
6224f72b 2014 case 2:
4633a7c4 2015 /* my_exit() was called */
3280af22 2016 PL_curstash = PL_defstash;
4633a7c4 2017 FREETMPS;
14dd3ad8 2018 JMPENV_POP;
cc3604b1 2019 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2020 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2021 my_exit_jump();
4633a7c4 2022 /* NOTREACHED */
6224f72b 2023 case 3:
3280af22 2024 if (PL_restartop) {
533c011a 2025 PL_op = PL_restartop;
3280af22 2026 PL_restartop = 0;
312caa8e 2027 goto redo_body;
4633a7c4 2028 }
3280af22 2029 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW		 2030 if (flags & G_ARRAY)
2031 retval = 0;
2032 else {
2033 retval = 1;
3280af22 2034 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2035 }
312caa8e 2036 break;
4633a7c4
LW		 2037 }
2038
14dd3ad8 2039 JMPENV_POP;
4633a7c4 2040 if (flags & G_DISCARD) {
3280af22 2041 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW		 2042 retval = 0;
2043 FREETMPS;
2044 LEAVE;
2045 }
533c011a 2046 PL_op = oldop;
4633a7c4
LW		 2047 return retval;
2048}
2049
954c1994
GS		 2050/*
2051=for apidoc p||eval_pv
2052
2053Tells Perl to C<eval> the given string and return an SV* result.
2054
2055=cut
2056*/
2057
137443ea 2058SV*
864dbfa3 2059Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2060{
2061 dSP;
2062 SV* sv = newSVpv(p, 0);
2063
864dbfa3 2064 eval_sv(sv, G_SCALAR);
137443ea 2065 SvREFCNT_dec(sv);
2066
2067 SPAGAIN;
2068 sv = POPs;
2069 PUTBACK;
2070
2d8e6c8d
GS		 2071 if (croak_on_error && SvTRUE(ERRSV)) {
2072 STRLEN n_a;
cea2e8a9 2073 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
2d8e6c8d 2074 }
137443ea 2075
2076 return sv;
2077}
2078
4633a7c4
LW		 2079/* Require a module. */
2080
954c1994 2081/*
ccfc67b7
JH		 2082=head1 Embedding Functions
2083
954c1994
GS		 2084=for apidoc p||require_pv
2085
7d3fb230
BS		 2086Tells Perl to C<require> the file named by the string argument. It is
2087analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2088implemented that way; consider using load_module instead.
954c1994 2089
7d3fb230 2090=cut */
954c1994 2091
4633a7c4 2092void
864dbfa3 2093Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2094{
d3acc0f7
JP		 2095 SV* sv;
2096 dSP;
e788e7d3 2097 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7
JP		 2098 PUTBACK;
2099 sv = sv_newmortal();
4633a7c4
LW		 2100 sv_setpv(sv, "require '");
2101 sv_catpv(sv, pv);
2102 sv_catpv(sv, "'");
864dbfa3 2103 eval_sv(sv, G_DISCARD);
d3acc0f7
JP		 2104 SPAGAIN;
2105 POPSTACK;
79072805
LW		 2106}
2107
79072805 2108void
864dbfa3 2109Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
79072805
LW		 2110{
2111 register GV *gv;
2112
155aba94 2113 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
14befaf4 2114 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
79072805
LW		 2115}
2116
76e3520e 2117STATIC void
cea2e8a9 2118S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
4633a7c4 2119{
ab821d7f 2120 /* This message really ought to be max 23 lines.
75c72d73 2121 * Removed -h because the user already knows that option. Others? */
fb73857a 2122
76e3520e 2123 static char *usage_msg[] = {
fb73857a 2124"-0[octal] specify record separator (\\0, if no argument)",
2125"-a autosplit mode with -n or -p (splits $_ into @F)",
46487f74 2126"-C enable native wide character system interfaces",
1950ee41 2127"-c check syntax only (runs BEGIN and CHECK blocks)",
aac3bd0d
GS		 2128"-d[:debugger] run program under debugger",
2129"-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2130"-e 'command' one line of program (several -e's allowed, omit programfile)",
2131"-F/pattern/ split() pattern for -a switch (//'s are optional)",
2132"-i[extension] edit <> files in place (makes backup if extension supplied)",
2133"-Idirectory specify @INC/#include directory (several -I's allowed)",
fb73857a 2134"-l[octal] enable line ending processing, specifies line terminator",
aac3bd0d
GS		 2135"-[mM][-]module execute `use/no module...' before executing program",
2136"-n assume 'while (<>) { ... }' loop around program",
2137"-p assume loop like -n but print line also, like sed",
2138"-P run program through C preprocessor before compilation",
2139"-s enable rudimentary parsing for switches after programfile",
2140"-S look for programfile using PATH environment variable",
2141"-T enable tainting checks",
9cbc33e8 2142"-t enable tainting warnings",
aac3bd0d 2143"-u dump core after parsing program",
fb73857a 2144"-U allow unsafe operations",
aac3bd0d
GS		 2145"-v print version, subversion (includes VERY IMPORTANT perl info)",
2146"-V[:variable] print configuration summary (or a single Config.pm variable)",
2147"-w enable many useful warnings (RECOMMENDED)",
3c0facb2
GS		 2148"-W enable all warnings",
2149"-X disable all warnings",
fb73857a 2150"-x[directory] strip off text before #!perl line and perhaps cd to directory",
2151"\n",
2152NULL
2153};
76e3520e 2154 char **p = usage_msg;
fb73857a 2155
b0e47665
GS		 2156 PerlIO_printf(PerlIO_stdout(),
2157 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2158 name);
fb73857a 2159 while (*p)
b0e47665 2160 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
4633a7c4
LW		 2161}
2162
79072805
LW		 2163/* This routine handles any switches that can be given during run */
2164
2165char *
864dbfa3 2166Perl_moreswitches(pTHX_ char *s)
79072805 2167{
ba210ebe 2168 STRLEN numlen;
c07a80fd 2169 U32 rschar;
79072805
LW		 2170
2171 switch (*s) {
2172 case '0':
a863c7d1 2173 {
f2095865
JH		 2174 I32 flags = 0;
2175
2176 SvREFCNT_dec(PL_rs);
2177 if (s[1] == 'x' && s[2]) {
2178 char *e;
2179 U8 *tmps;
2180
2181 for (s += 2, e = s; *e; e++);
2182 numlen = e - s;
2183 flags = PERL_SCAN_SILENT_ILLDIGIT;
2184 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
2185 if (s + numlen < e) {
2186 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
2187 numlen = 0;
2188 s--;
2189 }
2190 PL_rs = newSVpvn("", 0);
2191 SvGROW(PL_rs, UNISKIP(rschar) + 1);
2192 tmps = (U8*)SvPVX(PL_rs);
2193 uvchr_to_utf8(tmps, rschar);
2194 SvCUR_set(PL_rs, UNISKIP(rschar));
2195 SvUTF8_on(PL_rs);
2196 }
2197 else {
2198 numlen = 4;
2199 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
2200 if (rschar & ~((U8)~0))
2201 PL_rs = &PL_sv_undef;
2202 else if (!rschar && numlen >= 2)
2203 PL_rs = newSVpvn("", 0);
2204 else {
2205 char ch = (char)rschar;
2206 PL_rs = newSVpvn(&ch, 1);
2207 }
2208 }
2209 return s + numlen;
a863c7d1 2210 }
46487f74 2211 case 'C':
a05d7ebb
JH		 2212 s++;
2213 PL_unicode = parse_unicode_opts(&s);
46487f74 2214 return s;
2304df62 2215 case 'F':
3280af22 2216 PL_minus_F = TRUE;
ebce5377
RGS		 2217 PL_splitstr = ++s;
2218 while (*s && !isSPACE(*s)) ++s;
2219 *s = '\0';
2220 PL_splitstr = savepv(PL_splitstr);
2304df62 2221 return s;
79072805 2222 case 'a':
3280af22 2223 PL_minus_a = TRUE;
79072805
LW		 2224 s++;
2225 return s;
2226 case 'c':
3280af22 2227 PL_minus_c = TRUE;
79072805
LW		 2228 s++;
2229 return s;
2230 case 'd':
bbce6d69 2231 forbid_setid("-d");
4633a7c4 2232 s++;
70c94a19
RR		 2233 /* The following permits -d:Mod to accepts arguments following an =
2234 in the fashion that -MSome::Mod does. */
2235 if (*s == ':' || *s == '=') {
2236 char *start;
2237 SV *sv;
2238 sv = newSVpv("use Devel::", 0);
2239 start = ++s;
2240 /* We now allow -d:Module=Foo,Bar */
2241 while(isALNUM(*s) || *s==':') ++s;
2242 if (*s != '=')
2243 sv_catpv(sv, start);
2244 else {
2245 sv_catpvn(sv, start, s-start);
2246 sv_catpv(sv, " split(/,/,q{");
2247 sv_catpv(sv, ++s);
2248 sv_catpv(sv, "})");
2249 }
4633a7c4 2250 s += strlen(s);
70c94a19 2251 my_setenv("PERL5DB", SvPV(sv, PL_na));
4633a7c4 2252 }
ed094faf 2253 if (!PL_perldb) {
3280af22 2254 PL_perldb = PERLDB_ALL;
a0d0e21e 2255 init_debugger();
ed094faf 2256 }
79072805
LW		 2257 return s;
2258 case 'D':
0453d815 2259 {
79072805 2260#ifdef DEBUGGING
bbce6d69 2261 forbid_setid("-D");
79072805 2262 if (isALPHA(s[1])) {
04932ac8 2263 /* if adding extra options, remember to update DEBUG_MASK */
7bab3ede 2264 static char debopts[] = "psltocPmfrxu HXDSTRJvC";
79072805
LW		 2265 char *d;
2266
93a17b20 2267 for (s++; *s && (d = strchr(debopts,*s)); s++)
3280af22 2268 PL_debug |= 1 << (d - debopts);
79072805
LW		 2269 }
2270 else {
3280af22 2271 PL_debug = atoi(s+1);
79072805
LW		 2272 for (s++; isDIGIT(*s); s++) ;
2273 }
2ac72d6e 2274#ifdef EBCDIC
12a43e32
JH		 2275 if (DEBUG_p_TEST_ && ckWARN_d(WARN_DEBUGGING))
2276 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2277 "-Dp not implemented on this platform\n");
2278#endif
aea4f609 2279 PL_debug |= DEBUG_TOP_FLAG;
12a43e32 2280#else /* !DEBUGGING */
0453d815 2281 if (ckWARN_d(WARN_DEBUGGING))
9014280d 2282 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
0453d815 2283 "Recompile perl with -DDEBUGGING to use -D switch\n");
a0d0e21e 2284 for (s++; isALNUM(*s); s++) ;
79072805
LW		 2285#endif
2286 /*SUPPRESS 530*/
2287 return s;
0453d815 2288 }
4633a7c4 2289 case 'h':
ac27b0f5 2290 usage(PL_origargv[0]);
7ca617d0 2291 my_exit(0);
79072805 2292 case 'i':
3280af22
NIS		 2293 if (PL_inplace)
2294 Safefree(PL_inplace);
c030f24b
GH		 2295#if defined(__CYGWIN__) /* do backup extension automagically */
2296 if (*(s+1) == '\0') {
2297 PL_inplace = savepv(".bak");
2298 return s+1;
2299 }
2300#endif /* __CYGWIN__ */
3280af22 2301 PL_inplace = savepv(s+1);
79072805 2302 /*SUPPRESS 530*/
3280af22 2303 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
7b8d334a 2304 if (*s) {
fb73857a 2305 *s++ = '\0';
7b8d334a
GS		 2306 if (*s == '-') /* Additional switches on #! line. */
2307 s++;
2308 }
fb73857a 2309 return s;
4e49a025 2310 case 'I': /* -I handled both here and in parse_body() */
bbce6d69 2311 forbid_setid("-I");
fb73857a 2312 ++s;
2313 while (*s && isSPACE(*s))
2314 ++s;
2315 if (*s) {
774d564b 2316 char *e, *p;
0df16ed7
GS		 2317 p = s;
2318 /* ignore trailing spaces (possibly followed by other switches) */
2319 do {
2320 for (e = p; *e && !isSPACE(*e); e++) ;
2321 p = e;
2322 while (isSPACE(*p))
2323 p++;
2324 } while (*p && *p != '-');
2325 e = savepvn(s, e-s);
574c798a 2326 incpush(e, TRUE, TRUE, FALSE);
0df16ed7
GS		 2327 Safefree(e);
2328 s = p;
2329 if (*s == '-')
2330 s++;
79072805
LW		 2331 }
2332 else
a67e862a 2333 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 2334 return s;
79072805 2335 case 'l':
3280af22 2336 PL_minus_l = TRUE;
79072805 2337 s++;
7889fe52
NIS		 2338 if (PL_ors_sv) {
2339 SvREFCNT_dec(PL_ors_sv);
2340 PL_ors_sv = Nullsv;
2341 }
79072805 2342 if (isDIGIT(*s)) {
53305cf1 2343 I32 flags = 0;
7889fe52 2344 PL_ors_sv = newSVpvn("\n",1);
53305cf1
NC		 2345 numlen = 3 + (*s == '0');
2346 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW		 2347 s += numlen;
2348 }
2349 else {
8bfdd7d9 2350 if (RsPARA(PL_rs)) {
7889fe52
NIS		 2351 PL_ors_sv = newSVpvn("\n\n",2);
2352 }
2353 else {
8bfdd7d9 2354 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 2355 }
79072805
LW		 2356 }
2357 return s;
06492da6
SF		 2358 case 'A':
2359 forbid_setid("-A");
930366bd
RGS		 2360 if (!PL_preambleav)
2361 PL_preambleav = newAV();
06492da6 2362 if (*++s) {
930366bd 2363 SV *sv = newSVpvn("use assertions::activate split(/,/,q{",37);
06492da6
SF		 2364 sv_catpv(sv,s);
2365 sv_catpv(sv,"})");
2366 s+=strlen(s);
06492da6
SF		 2367 av_push(PL_preambleav, sv);
2368 }
2369 else
930366bd 2370 av_push(PL_preambleav, newSVpvn("use assertions::activate",24));
06492da6 2371 return s;
1a30305b 2372 case 'M':
bbce6d69 2373 forbid_setid("-M"); /* XXX ? */
1a30305b 2374 /* FALL THROUGH */
2375 case 'm':
bbce6d69 2376 forbid_setid("-m"); /* XXX ? */
1a30305b 2377 if (*++s) {
a5f75d66 2378 char *start;
11343788 2379 SV *sv;
a5f75d66
AD		 2380 char *use = "use ";
2381 /* -M-foo == 'no foo' */
2382 if (*s == '-') { use = "no "; ++s; }
11343788 2383 sv = newSVpv(use,0);
a5f75d66 2384 start = s;
1a30305b 2385 /* We allow -M'Module qw(Foo Bar)' */
c07a80fd 2386 while(isALNUM(*s) || *s==':') ++s;
2387 if (*s != '=') {
11343788 2388 sv_catpv(sv, start);
c07a80fd 2389 if (*(start-1) == 'm') {
2390 if (*s != '\0')
cea2e8a9 2391 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
11343788 2392 sv_catpv( sv, " ()");
c07a80fd 2393 }
2394 } else {
6df41af2 2395 if (s == start)
be98fb35
GS		 2396 Perl_croak(aTHX_ "Module name required with -%c option",
2397 s[-1]);
11343788
MB		 2398 sv_catpvn(sv, start, s-start);
2399 sv_catpv(sv, " split(/,/,q{");
2400 sv_catpv(sv, ++s);
2401 sv_catpv(sv, "})");
c07a80fd 2402 }
1a30305b 2403 s += strlen(s);
5c831c24 2404 if (!PL_preambleav)
3280af22
NIS		 2405 PL_preambleav = newAV();
2406 av_push(PL_preambleav, sv);
1a30305b 2407 }
2408 else
cea2e8a9 2409 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
1a30305b 2410 return s;
79072805 2411 case 'n':
3280af22 2412 PL_minus_n = TRUE;
79072805
LW		 2413 s++;
2414 return s;
2415 case 'p':
3280af22 2416 PL_minus_p = TRUE;
79072805
LW		 2417 s++;
2418 return s;
2419 case 's':
bbce6d69 2420 forbid_setid("-s");
3280af22 2421 PL_doswitches = TRUE;
79072805
LW		 2422 s++;
2423 return s;
6537fe72
MS		 2424 case 't':
2425 if (!PL_tainting)
2426 Perl_croak(aTHX_ "Too late for \"-t\" option");
2427 s++;
2428 return s;
463ee0b2 2429 case 'T':
3280af22 2430 if (!PL_tainting)
cea2e8a9 2431 Perl_croak(aTHX_ "Too late for \"-T\" option");
463ee0b2
LW		 2432 s++;
2433 return s;
79072805 2434 case 'u':
bf4acbe4
GS		 2435#ifdef MACOS_TRADITIONAL
2436 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2437#endif
3280af22 2438 PL_do_undump = TRUE;
79072805
LW		 2439 s++;
2440 return s;
2441 case 'U':
3280af22 2442 PL_unsafe = TRUE;
79072805
LW		 2443 s++;
2444 return s;
2445 case 'v':
8e9464f1 2446#if !defined(DGUX)
b0e47665 2447 PerlIO_printf(PerlIO_stdout(),
d2560b70 2448 Perl_form(aTHX_ "\nThis is perl, v%"VDf" built for %s",
b0e47665 2449 PL_patchlevel, ARCHNAME));
8e9464f1
JH		 2450#else /* DGUX */
2451/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
2452 PerlIO_printf(PerlIO_stdout(),
2453 Perl_form(aTHX_ "\nThis is perl, version %vd\n", PL_patchlevel));
2454 PerlIO_printf(PerlIO_stdout(),
2455 Perl_form(aTHX_ " built under %s at %s %s\n",
2456 OSNAME, __DATE__, __TIME__));
2457 PerlIO_printf(PerlIO_stdout(),
2458 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 2459 OSVERS));
8e9464f1
JH		 2460#endif /* !DGUX */
2461
fb73857a 2462#if defined(LOCAL_PATCH_COUNT)
2463 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS		 2464 PerlIO_printf(PerlIO_stdout(),
2465 "\n(with %d registered patch%s, "
2466 "see perl -V for more detail)",
2467 (int)LOCAL_PATCH_COUNT,
2468 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 2469#endif
1a30305b 2470
b0e47665 2471 PerlIO_printf(PerlIO_stdout(),
4c79ee7a 2472 "\n\nCopyright 1987-2003, Larry Wall\n");
eae9c151
JH		 2473#ifdef MACOS_TRADITIONAL
2474 PerlIO_printf(PerlIO_stdout(),
be3c0a43 2475 "\nMac OS port Copyright 1991-2002, Matthias Neeracher;\n"
03765510 2476 "maintained by Chris Nandor\n");
eae9c151 2477#endif
79072805 2478#ifdef MSDOS
b0e47665
GS		 2479 PerlIO_printf(PerlIO_stdout(),
2480 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff 2481#endif
2482#ifdef DJGPP
b0e47665
GS		 2483 PerlIO_printf(PerlIO_stdout(),
2484 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2485 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 2486#endif
79072805 2487#ifdef OS2
b0e47665
GS		 2488 PerlIO_printf(PerlIO_stdout(),
2489 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
be3c0a43 2490 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
79072805 2491#endif
79072805 2492#ifdef atarist
b0e47665
GS		 2493 PerlIO_printf(PerlIO_stdout(),
2494 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 2495#endif
a3f9223b 2496#ifdef __BEOS__
b0e47665
GS		 2497 PerlIO_printf(PerlIO_stdout(),
2498 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 2499#endif
1d84e8df 2500#ifdef MPE
b0e47665 2501 PerlIO_printf(PerlIO_stdout(),
be3c0a43 2502 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2002\n");
1d84e8df 2503#endif
9d116dd7 2504#ifdef OEMVS
b0e47665
GS		 2505 PerlIO_printf(PerlIO_stdout(),
2506 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 2507#endif
495c5fdc 2508#ifdef __VOS__
b0e47665 2509 PerlIO_printf(PerlIO_stdout(),
94efb9fb 2510 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
495c5fdc 2511#endif
092bebab 2512#ifdef __OPEN_VM
b0e47665
GS		 2513 PerlIO_printf(PerlIO_stdout(),
2514 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 2515#endif
a1a0e61e 2516#ifdef POSIX_BC
b0e47665
GS		 2517 PerlIO_printf(PerlIO_stdout(),
2518 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 2519#endif
61ae2fbf 2520#ifdef __MINT__
b0e47665
GS		 2521 PerlIO_printf(PerlIO_stdout(),
2522 "MiNT port by Guido Flohr, 1997-1999\n");
61ae2fbf 2523#endif
f83d2536 2524#ifdef EPOC
b0e47665 2525 PerlIO_printf(PerlIO_stdout(),
be3c0a43 2526 "EPOC port by Olaf Flebbe, 1999-2002\n");
f83d2536 2527#endif
e1caacb4 2528#ifdef UNDER_CE
b475b3e6
JH		 2529 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
2530 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
e1caacb4
JH		 2531 wce_hitreturn();
2532#endif
baed7233
DL		 2533#ifdef BINARY_BUILD_NOTICE
2534 BINARY_BUILD_NOTICE;
2535#endif
b0e47665
GS		 2536 PerlIO_printf(PerlIO_stdout(),
2537 "\n\
79072805 2538Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 2539GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687
GS		 2540Complete documentation for Perl, including FAQ lists, should be found on\n\
2541this system using `man perl' or `perldoc perl'. If you have access to the\n\
2542Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
7ca617d0 2543 my_exit(0);
79072805 2544 case 'w':
599cee73 2545 if (! (PL_dowarn & G_WARN_ALL_MASK))
ac27b0f5 2546 PL_dowarn |= G_WARN_ON;
599cee73
PM		 2547 s++;
2548 return s;
2549 case 'W':
ac27b0f5 2550 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
317ea90d
MS		 2551 if (!specialWARN(PL_compiling.cop_warnings))
2552 SvREFCNT_dec(PL_compiling.cop_warnings);
d3a7d8c7 2553 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM		 2554 s++;
2555 return s;
2556 case 'X':
ac27b0f5 2557 PL_dowarn = G_WARN_ALL_OFF;
317ea90d
MS		 2558 if (!specialWARN(PL_compiling.cop_warnings))
2559 SvREFCNT_dec(PL_compiling.cop_warnings);
d3a7d8c7 2560 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW		 2561 s++;
2562 return s;
a0d0e21e 2563 case '*':
79072805
LW		 2564 case ' ':
2565 if (s[1] == '-') /* Additional switches on #! line. */
2566 return s+2;
2567 break;
a0d0e21e 2568 case '-':
79072805 2569 case 0:
51882d45 2570#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS		 2571 case '\r':
2572#endif
79072805
LW		 2573 case '\n':
2574 case '\t':
2575 break;
aa689395 2576#ifdef ALTERNATE_SHEBANG
2577 case 'S': /* OS/2 needs -S on "extproc" line. */
2578 break;
2579#endif
a0d0e21e 2580 case 'P':
3280af22 2581 if (PL_preprocess)
a0d0e21e
LW		 2582 return s+1;
2583 /* FALL THROUGH */
79072805 2584 default:
cea2e8a9 2585 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805
LW		 2586 }
2587 return Nullch;
2588}
2589
2590/* compliments of Tom Christiansen */
2591
2592/* unexec() can be found in the Gnu emacs distribution */
ee580363 2593/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW		 2594
2595void
864dbfa3 2596Perl_my_unexec(pTHX)
79072805
LW		 2597{
2598#ifdef UNEXEC
46fc3d4c 2599 SV* prog;
2600 SV* file;
ee580363 2601 int status = 1;
79072805
LW		 2602 extern int etext;
2603
ee580363 2604 prog = newSVpv(BIN_EXP, 0);
46fc3d4c 2605 sv_catpv(prog, "/perl");
6b88bc9c 2606 file = newSVpv(PL_origfilename, 0);
46fc3d4c 2607 sv_catpv(file, ".perldump");
79072805 2608
ee580363
GS		 2609 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2610 /* unexec prints msg to stderr in case of failure */
6ad3d225 2611 PerlProc_exit(status);
79072805 2612#else
a5f75d66
AD		 2613# ifdef VMS
2614# include <lib$routines.h>
2615 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
aa689395 2616# else
79072805 2617 ABORT(); /* for use with undump */
aa689395 2618# endif
a5f75d66 2619#endif
79072805
LW		 2620}
2621
cb68f92d
GS		 2622/* initialize curinterp */
2623STATIC void
cea2e8a9 2624S_init_interp(pTHX)
cb68f92d
GS		 2625{
2626
acfe0abc
GS		 2627#ifdef MULTIPLICITY
2628# define PERLVAR(var,type)
2629# define PERLVARA(var,n,type)
2630# if defined(PERL_IMPLICIT_CONTEXT)
2631# if defined(USE_5005THREADS)
2632# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
c5be433b 2633# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
acfe0abc
GS		 2634# else /* !USE_5005THREADS */
2635# define PERLVARI(var,type,init) aTHX->var = init;
2636# define PERLVARIC(var,type,init) aTHX->var = init;
2637# endif /* USE_5005THREADS */
3967c732 2638# else
acfe0abc
GS		 2639# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2640# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
066ef5b5 2641# endif
acfe0abc
GS		 2642# include "intrpvar.h"
2643# ifndef USE_5005THREADS
2644# include "thrdvar.h"
2645# endif
2646# undef PERLVAR
2647# undef PERLVARA
2648# undef PERLVARI
2649# undef PERLVARIC
2650#else
2651# define PERLVAR(var,type)
2652# define PERLVARA(var,n,type)
2653# define PERLVARI(var,type,init) PL_##var = init;
2654# define PERLVARIC(var,type,init) PL_##var = init;
2655# include "intrpvar.h"
2656# ifndef USE_5005THREADS
2657# include "thrdvar.h"
2658# endif
2659# undef PERLVAR
2660# undef PERLVARA
2661# undef PERLVARI
2662# undef PERLVARIC
cb68f92d
GS		 2663#endif
2664
cb68f92d
GS		 2665}
2666
76e3520e 2667STATIC void
cea2e8a9 2668S_init_main_stash(pTHX)
79072805 2669{
463ee0b2 2670 GV *gv;
6e72f9df 2671
3280af22 2672 PL_curstash = PL_defstash = newHV();
79cb57f6 2673 PL_curstname = newSVpvn("main",4);
adbc6bb1
LW		 2674 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2675 SvREFCNT_dec(GvHV(gv));
3280af22 2676 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
463ee0b2 2677 SvREADONLY_on(gv);
3280af22
NIS		 2678 HvNAME(PL_defstash) = savepv("main");
2679 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2680 GvMULTI_on(PL_incgv);
2681 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2682 GvMULTI_on(PL_hintgv);
2683 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2684 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2685 GvMULTI_on(PL_errgv);
2686 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2687 GvMULTI_on(PL_replgv);
cea2e8a9 2688 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
38a03e6e
MB		 2689 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2690 sv_setpvn(ERRSV, "", 0);
3280af22 2691 PL_curstash = PL_defstash;
11faa288 2692 CopSTASH_set(&PL_compiling, PL_defstash);
ed094faf 2693 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
3280af22 2694 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
4633a7c4 2695 /* We must init $/ before switches are processed. */
864dbfa3 2696 sv_setpvn(get_sv("/", TRUE), "\n", 1);
79072805
LW		 2697}
2698
76e3520e 2699STATIC void
cea2e8a9 2700S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
79072805 2701{
1b24ed4b
MS		 2702 char *quote;
2703 char *code;
2704 char *cpp_discard_flag;
2705 char *perl;
2706
6c4ab083 2707 *fdscript = -1;
79072805 2708
3280af22
NIS		 2709 if (PL_e_script) {
2710 PL_origfilename = savepv("-e");
96436eeb 2711 }
6c4ab083
GS		 2712 else {
2713 /* if find_script() returns, it returns a malloc()-ed value */
3280af22 2714 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
6c4ab083
GS		 2715
2716 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2717 char *s = scriptname + 8;
2718 *fdscript = atoi(s);
2719 while (isDIGIT(*s))
2720 s++;
2721 if (*s) {
2722 scriptname = savepv(s + 1);
3280af22
NIS		 2723 Safefree(PL_origfilename);
2724 PL_origfilename = scriptname;
6c4ab083
GS		 2725 }
2726 }
2727 }
2728
05ec9bb3 2729 CopFILE_free(PL_curcop);
57843af0 2730 CopFILE_set(PL_curcop, PL_origfilename);
3280af22 2731 if (strEQ(PL_origfilename,"-"))
79072805 2732 scriptname = "";
01f988be 2733 if (*fdscript >= 0) {
3280af22 2734 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
1b24ed4b
MS		 2735# if defined(HAS_FCNTL) && defined(F_SETFD)
2736 if (PL_rsfp)
2737 /* ensure close-on-exec */
2738 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1);
2739# endif
96436eeb 2740 }
3280af22 2741 else if (PL_preprocess) {
46fc3d4c 2742 char *cpp_cfg = CPPSTDIN;
79cb57f6 2743 SV *cpp = newSVpvn("",0);
46fc3d4c 2744 SV *cmd = NEWSV(0,0);
2745
2746 if (strEQ(cpp_cfg, "cppstdin"))
cea2e8a9 2747 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
46fc3d4c 2748 sv_catpv(cpp, cpp_cfg);
79072805 2749
1b24ed4b
MS		 2750# ifndef VMS
2751 sv_catpvn(sv, "-I", 2);
2752 sv_catpv(sv,PRIVLIB_EXP);
2753# endif
46fc3d4c 2754
14953ddc
MB		 2755 DEBUG_P(PerlIO_printf(Perl_debug_log,
2756 "PL_preprocess: scriptname=\"%s\", cpp=\"%s\", sv=\"%s\", CPPMINUS=\"%s\"\n",
2757 scriptname, SvPVX (cpp), SvPVX (sv), CPPMINUS));
1b24ed4b
MS		 2758
2759# if defined(MSDOS) || defined(WIN32) || defined(VMS)
2760 quote = "\"";
2761# else
2762 quote = "'";
2763# endif
2764
2765# ifdef VMS
2766 cpp_discard_flag = "";
2767# else
2768 cpp_discard_flag = "-C";
2769# endif
2770
2771# ifdef OS2
2772 perl = os2_execname(aTHX);
2773# else
2774 perl = PL_origargv[0];
2775# endif
2776
2777
2778 /* This strips off Perl comments which might interfere with
62375a60
NIS		 2779 the C pre-processor, including #!. #line directives are
2780 deliberately stripped to avoid confusion with Perl's version
1b24ed4b
MS		 2781 of #line. FWP played some golf with it so it will fit
2782 into VMS's 255 character buffer.
2783 */
2784 if( PL_doextract )
2785 code = "(1../^#!.*perl/i)|/^\\s*#(?!\\s*((ifn?|un)def|(el|end)?if|define|include|else|error|pragma)\\b)/||!($|=1)||print";
2786 else
2787 code = "/^\\s*#(?!\\s*((ifn?|un)def|(el|end)?if|define|include|else|error|pragma)\\b)/||!($|=1)||print";
2788
2789 Perl_sv_setpvf(aTHX_ cmd, "\
2790%s -ne%s%s%s %s | %"SVf" %s %"SVf" %s",
62375a60 2791 perl, quote, code, quote, scriptname, cpp,
1b24ed4b
MS		 2792 cpp_discard_flag, sv, CPPMINUS);
2793
3280af22 2794 PL_doextract = FALSE;
1b24ed4b
MS		 2795# ifdef IAMSUID /* actually, this is caught earlier */
2796 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
2797# ifdef HAS_SETEUID
2798 (void)seteuid(PL_uid); /* musn't stay setuid root */
2799# else
2800# ifdef HAS_SETREUID
2801 (void)setreuid((Uid_t)-1, PL_uid);
2802# else
2803# ifdef HAS_SETRESUID
2804 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
2805# else
2806 PerlProc_setuid(PL_uid);
2807# endif
2808# endif
2809# endif
b28d0864 2810 if (PerlProc_geteuid() != PL_uid)
cea2e8a9 2811 Perl_croak(aTHX_ "Can't do seteuid!\n");
79072805 2812 }
1b24ed4b 2813# endif /* IAMSUID */
0a6c758d 2814
62375a60
NIS		 2815 DEBUG_P(PerlIO_printf(Perl_debug_log,
2816 "PL_preprocess: cmd=\"%s\"\n",
0a6c758d
MS		 2817 SvPVX(cmd)));
2818
3280af22 2819 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
46fc3d4c 2820 SvREFCNT_dec(cmd);
2821 SvREFCNT_dec(cpp);
79072805
LW		 2822 }
2823 else if (!*scriptname) {
bbce6d69 2824 forbid_setid("program input from stdin");
3280af22 2825 PL_rsfp = PerlIO_stdin();
79072805 2826 }
96436eeb 2827 else {
3280af22 2828 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
1b24ed4b
MS		 2829# if defined(HAS_FCNTL) && defined(F_SETFD)
2830 if (PL_rsfp)
2831 /* ensure close-on-exec */
2832 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1);
2833# endif
96436eeb 2834 }
3280af22 2835 if (!PL_rsfp) {
1b24ed4b
MS		 2836# ifdef DOSUID
2837# ifndef IAMSUID /* in case script is not readable before setuid */
2838 if (PL_euid &&
2839 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
2840 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2841 {
2842 /* try again */
62375a60
NIS		 2843 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT,
2844 BIN_EXP, (int)PERL_REVISION,
1b24ed4b
MS		 2845 (int)PERL_VERSION,
2846 (int)PERL_SUBVERSION), PL_origargv);
2847 Perl_croak(aTHX_ "Can't do setuid\n");
2848 }
2849# endif
2850# endif
2851# ifdef IAMSUID
2852 errno = EPERM;
2853 Perl_croak(aTHX_ "Can't open perl script: %s\n",
2854 Strerror(errno));
2855# else
2856 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
2857 CopFILE(PL_curcop), Strerror(errno));
2858# endif
13281fa4 2859 }
79072805 2860}
8d063cd8 2861
7b89560d
JH		 2862/* Mention
2863 * I_SYSSTATVFS HAS_FSTATVFS
2864 * I_SYSMOUNT
c890dc6c 2865 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
7b89560d
JH		 2866 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2867 * here so that metaconfig picks them up. */
2868
104d25b7 2869#ifdef IAMSUID
864dbfa3 2870STATIC int
e688b231 2871S_fd_on_nosuid_fs(pTHX_ int fd)
104d25b7 2872{
0545a864
JH		 2873 int check_okay = 0; /* able to do all the required sys/libcalls */
2874 int on_nosuid = 0; /* the fd is on a nosuid fs */
104d25b7 2875/*
ad27e871 2876 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
e688b231 2877 * fstatvfs() is UNIX98.
0545a864 2878 * fstatfs() is 4.3 BSD.
ad27e871 2879 * ustat()+getmnt() is pre-4.3 BSD.
0545a864
JH		 2880 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2881 * an irrelevant filesystem while trying to reach the right one.
104d25b7
JH		 2882 */
2883
6439433f
JH		 2884#undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2885
2886# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2887 defined(HAS_FSTATVFS)
2888# define FD_ON_NOSUID_CHECK_OKAY
104d25b7 2889 struct statvfs stfs;
6439433f 2890
104d25b7
JH		 2891 check_okay = fstatvfs(fd, &stfs) == 0;
2892 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
6439433f 2893# endif /* fstatvfs */
ac27b0f5 2894
6439433f
JH		 2895# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2896 defined(PERL_MOUNT_NOSUID) && \
2897 defined(HAS_FSTATFS) && \
2898 defined(HAS_STRUCT_STATFS) && \
2899 defined(HAS_STRUCT_STATFS_F_FLAGS)
2900# define FD_ON_NOSUID_CHECK_OKAY
e688b231 2901 struct statfs stfs;
6439433f 2902
104d25b7 2903 check_okay = fstatfs(fd, &stfs) == 0;
104d25b7 2904 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
6439433f
JH		 2905# endif /* fstatfs */
2906
2907# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2908 defined(PERL_MOUNT_NOSUID) && \
2909 defined(HAS_FSTAT) && \
2910 defined(HAS_USTAT) && \
2911 defined(HAS_GETMNT) && \
2912 defined(HAS_STRUCT_FS_DATA) && \
2913 defined(NOSTAT_ONE)
2914# define FD_ON_NOSUID_CHECK_OKAY
c623ac67 2915 Stat_t fdst;
6439433f 2916
0545a864 2917 if (fstat(fd, &fdst) == 0) {
6439433f
JH		 2918 struct ustat us;
2919 if (ustat(fdst.st_dev, &us) == 0) {
2920 struct fs_data fsd;
2921 /* NOSTAT_ONE here because we're not examining fields which
2922 * vary between that case and STAT_ONE. */
ad27e871 2923 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
6439433f
JH		 2924 size_t cmplen = sizeof(us.f_fname);
2925 if (sizeof(fsd.fd_req.path) < cmplen)
2926 cmplen = sizeof(fsd.fd_req.path);
2927 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2928 fdst.st_dev == fsd.fd_req.dev) {
2929 check_okay = 1;
2930 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2931 }
2932 }
2933 }
2934 }
0545a864 2935 }
6439433f
JH		 2936# endif /* fstat+ustat+getmnt */
2937
2938# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2939 defined(HAS_GETMNTENT) && \
2940 defined(HAS_HASMNTOPT) && \
2941 defined(MNTOPT_NOSUID)
2942# define FD_ON_NOSUID_CHECK_OKAY
2943 FILE *mtab = fopen("/etc/mtab", "r");
2944 struct mntent *entry;
c623ac67 2945 Stat_t stb, fsb;
104d25b7
JH		 2946
2947 if (mtab && (fstat(fd, &stb) == 0)) {
6439433f
JH		 2948 while (entry = getmntent(mtab)) {
2949 if (stat(entry->mnt_dir, &fsb) == 0
2950 && fsb.st_dev == stb.st_dev)
2951 {
2952 /* found the filesystem */
2953 check_okay = 1;
2954 if (hasmntopt(entry, MNTOPT_NOSUID))
2955 on_nosuid = 1;
2956 break;
2957 } /* A single fs may well fail its stat(). */
2958 }
104d25b7
JH		 2959 }
2960 if (mtab)
6439433f
JH		 2961 fclose(mtab);
2962# endif /* getmntent+hasmntopt */
0545a864 2963
ac27b0f5 2964 if (!check_okay)
0545a864 2965 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
104d25b7
JH		 2966 return on_nosuid;
2967}
2968#endif /* IAMSUID */
2969
76e3520e 2970STATIC void
cea2e8a9 2971S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
79072805 2972{
155aba94 2973#ifdef IAMSUID
96436eeb 2974 int which;
155aba94 2975#endif
96436eeb 2976
13281fa4
LW		 2977 /* do we need to emulate setuid on scripts? */
2978
2979 /* This code is for those BSD systems that have setuid #! scripts disabled
2980 * in the kernel because of a security problem. Merely defining DOSUID
2981 * in perl will not fix that problem, but if you have disabled setuid
2982 * scripts in the kernel, this will attempt to emulate setuid and setgid
2983 * on scripts that have those now-otherwise-useless bits set. The setuid
27e2fb84
LW		 2984 * root version must be called suidperl or sperlN.NNN. If regular perl
2985 * discovers that it has opened a setuid script, it calls suidperl with
2986 * the same argv that it had. If suidperl finds that the script it has
2987 * just opened is NOT setuid root, it sets the effective uid back to the
2988 * uid. We don't just make perl setuid root because that loses the
2989 * effective uid we had before invoking perl, if it was different from the
2990 * uid.
13281fa4
LW		 2991 *
2992 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2993 * be defined in suidperl only. suidperl must be setuid root. The
2994 * Configure script will set this up for you if you want it.
2995 */
a687059c 2996
13281fa4 2997#ifdef DOSUID
6e72f9df 2998 char *s, *s2;
a0d0e21e 2999
b28d0864 3000 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
cea2e8a9 3001 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
b28d0864 3002 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
79072805 3003 I32 len;
2d8e6c8d 3004 STRLEN n_a;
13281fa4 3005
a687059c 3006#ifdef IAMSUID
fe14fcc3 3007#ifndef HAS_SETREUID
a687059c
LW		 3008 /* On this access check to make sure the directories are readable,
3009 * there is actually a small window that the user could use to make
3010 * filename point to an accessible directory. So there is a faint
3011 * chance that someone could execute a setuid script down in a
3012 * non-accessible directory. I don't know what to do about that.
3013 * But I don't think it's too important. The manual lies when
3014 * it says access() is useful in setuid programs.
3015 */
cc49e20b 3016 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
cea2e8a9 3017 Perl_croak(aTHX_ "Permission denied");
a687059c
LW		 3018#else
3019 /* If we can swap euid and uid, then we can determine access rights
3020 * with a simple stat of the file, and then compare device and
3021 * inode to make sure we did stat() on the same file we opened.
3022 * Then we just have to make sure he or she can execute it.
3023 */
3024 {
c623ac67 3025 Stat_t tmpstatbuf;
a687059c 3026
85e6fe83
LW		 3027 if (
3028#ifdef HAS_SETREUID
b28d0864 3029 setreuid(PL_euid,PL_uid) < 0
a0d0e21e
LW		 3030#else
3031# if HAS_SETRESUID
b28d0864 3032 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
a0d0e21e 3033# endif
85e6fe83 3034#endif
b28d0864 3035 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
cea2e8a9 3036 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
cc49e20b 3037 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
cea2e8a9 3038 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
2bb3463c 3039#if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
e688b231 3040 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
cea2e8a9 3041 Perl_croak(aTHX_ "Permission denied");
104d25b7 3042#endif
b28d0864
NIS		 3043 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
3044 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
3045 (void)PerlIO_close(PL_rsfp);
cea2e8a9 3046 Perl_croak(aTHX_ "Permission denied\n");
a687059c 3047 }
85e6fe83
LW		 3048 if (
3049#ifdef HAS_SETREUID
b28d0864 3050 setreuid(PL_uid,PL_euid) < 0
a0d0e21e
LW		 3051#else
3052# if defined(HAS_SETRESUID)
b28d0864 3053 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
a0d0e21e 3054# endif
85e6fe83 3055#endif
b28d0864 3056 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
cea2e8a9 3057 Perl_croak(aTHX_ "Can't reswap uid and euid");
b28d0864 3058 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
cea2e8a9 3059 Perl_croak(aTHX_ "Permission denied\n");
a687059c 3060 }
fe14fcc3 3061#endif /* HAS_SETREUID */
a687059c
LW		 3062#endif /* IAMSUID */
3063
b28d0864 3064 if (!S_ISREG(PL_statbuf.st_mode))
cea2e8a9 3065 Perl_croak(aTHX_ "Permission denied");
b28d0864 3066 if (PL_statbuf.st_mode & S_IWOTH)
cea2e8a9 3067 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
6b88bc9c 3068 PL_doswitches = FALSE; /* -s is insecure in suid */
57843af0 3069 CopLINE_inc(PL_curcop);
6b88bc9c 3070 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
2d8e6c8d 3071 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
cea2e8a9 3072 Perl_croak(aTHX_ "No #! line");
2d8e6c8d 3073 s = SvPV(PL_linestr,n_a)+2;
663a0e37 3074 if (*s == ' ') s++;
45d8adaa 3075 while (!isSPACE(*s)) s++;
2d8e6c8d 3076 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
6e72f9df 3077 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
3078 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
cea2e8a9 3079 Perl_croak(aTHX_ "Not a perl script");
a687059c 3080 while (*s == ' ' || *s == '\t') s++;
13281fa4
LW		 3081 /*
3082 * #! arg must be what we saw above. They can invoke it by
3083 * mentioning suidperl explicitly, but they may not add any strange
3084 * arguments beyond what #! says if they do invoke suidperl that way.
3085 */
3086 len = strlen(validarg);
3087 if (strEQ(validarg," PHOOEY ") ||
45d8adaa 3088 strnNE(s,validarg,len) || !isSPACE(s[len]))
cea2e8a9 3089 Perl_croak(aTHX_ "Args must match #! line");
a687059c
LW		 3090
3091#ifndef IAMSUID
b28d0864
NIS		 3092 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
3093 PL_euid == PL_statbuf.st_uid)
3094 if (!PL_do_undump)
cea2e8a9 3095 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
a687059c
LW		 3096FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3097#endif /* IAMSUID */
13281fa4 3098
b28d0864
NIS		 3099 if (PL_euid) { /* oops, we're not the setuid root perl */
3100 (void)PerlIO_close(PL_rsfp);
13281fa4 3101#ifndef IAMSUID
46fc3d4c 3102 /* try again */
a7cb1f99 3103 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS		 3104 (int)PERL_REVISION, (int)PERL_VERSION,
3105 (int)PERL_SUBVERSION), PL_origargv);
13281fa4 3106#endif
cea2e8a9 3107 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4
LW		 3108 }
3109
b28d0864 3110 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
fe14fcc3 3111#ifdef HAS_SETEGID
b28d0864 3112 (void)setegid(PL_statbuf.st_gid);
a687059c 3113#else
fe14fcc3 3114#ifdef HAS_SETREGID
b28d0864 3115 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
85e6fe83
LW		 3116#else
3117#ifdef HAS_SETRESGID
b28d0864 3118 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
a687059c 3119#else
b28d0864 3120 PerlProc_setgid(PL_statbuf.st_gid);
a687059c
LW		 3121#endif
3122#endif
85e6fe83 3123#endif
b28d0864 3124 if (PerlProc_getegid() != PL_statbuf.st_gid)
cea2e8a9 3125 Perl_croak(aTHX_ "Can't do setegid!\n");
83025b21 3126 }
b28d0864
NIS		 3127 if (PL_statbuf.st_mode & S_ISUID) {
3128 if (PL_statbuf.st_uid != PL_euid)
fe14fcc3 3129#ifdef HAS_SETEUID
b28d0864 3130 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
a687059c 3131#else
fe14fcc3 3132#ifdef HAS_SETREUID
b28d0864 3133 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
85e6fe83
LW		 3134#else
3135#ifdef HAS_SETRESUID
b28d0864 3136 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
a687059c 3137#else
b28d0864 3138 PerlProc_setuid(PL_statbuf.st_uid);
a687059c
LW		 3139#endif
3140#endif
85e6fe83 3141#endif
b28d0864 3142 if (PerlProc_geteuid() != PL_statbuf.st_uid)
cea2e8a9 3143 Perl_croak(aTHX_ "Can't do seteuid!\n");
a687059c 3144 }
b28d0864 3145 else if (PL_uid) { /* oops, mustn't run as root */
fe14fcc3 3146#ifdef HAS_SETEUID
b28d0864 3147 (void)seteuid((Uid_t)PL_uid);
a687059c 3148#else
fe14fcc3 3149#ifdef HAS_SETREUID
b28d0864 3150 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
a687059c 3151#else
85e6fe83 3152#ifdef HAS_SETRESUID
b28d0864 3153 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
85e6fe83 3154#else
b28d0864 3155 PerlProc_setuid((Uid_t)PL_uid);
85e6fe83 3156#endif
a687059c
LW		 3157#endif
3158#endif
b28d0864 3159 if (PerlProc_geteuid() != PL_uid)
cea2e8a9 3160 Perl_croak(aTHX_ "Can't do seteuid!\n");
83025b21 3161 }
748a9306 3162 init_ids();
b28d0864 3163 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
cea2e8a9 3164 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
13281fa4
LW		 3165 }
3166#ifdef IAMSUID
6b88bc9c 3167 else if (PL_preprocess)
cea2e8a9 3168 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
96436eeb 3169 else if (fdscript >= 0)
cea2e8a9 3170 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
13281fa4 3171 else
cea2e8a9 3172 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
96436eeb 3173
3174 /* We absolutely must clear out any saved ids here, so we */
3175 /* exec the real perl, substituting fd script for scriptname. */
3176 /* (We pass script name as "subdir" of fd, which perl will grok.) */
b28d0864
NIS		 3177 PerlIO_rewind(PL_rsfp);
3178 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
6b88bc9c
GS		 3179 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3180 if (!PL_origargv[which])
cea2e8a9
GS		 3181 Perl_croak(aTHX_ "Permission denied");
3182 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
6b88bc9c 3183 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
96436eeb 3184#if defined(HAS_FCNTL) && defined(F_SETFD)
b28d0864 3185 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
96436eeb 3186#endif
a7cb1f99 3187 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS		 3188 (int)PERL_REVISION, (int)PERL_VERSION,
3189 (int)PERL_SUBVERSION), PL_origargv);/* try again */
cea2e8a9 3190 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4 3191#endif /* IAMSUID */
a687059c 3192#else /* !DOSUID */
3280af22 3193 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
a687059c 3194#ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
b28d0864
NIS		 3195 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3196 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
a687059c 3197 ||
b28d0864 3198 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
a687059c 3199 )
b28d0864 3200 if (!PL_do_undump)
cea2e8a9 3201 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
a687059c
LW		 3202FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3203#endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3204 /* not set-id, must be wrapped */
a687059c 3205 }
13281fa4 3206#endif /* DOSUID */
79072805 3207}
13281fa4 3208
76e3520e 3209STATIC void
cea2e8a9 3210S_find_beginning(pTHX)
79072805 3211{
6e72f9df 3212 register char *s, *s2;
e55ac0fa
HS		 3213#ifdef MACOS_TRADITIONAL
3214 int maclines = 0;
3215#endif
33b78306
LW		 3216
3217 /* skip forward in input to the real script? */
3218
bbce6d69 3219 forbid_setid("-x");
bf4acbe4 3220#ifdef MACOS_TRADITIONAL
084592ab 3221 /* Since the Mac OS does not honor #! arguments for us, we do it ourselves */
ac27b0f5 3222
bf4acbe4
GS		 3223 while (PL_doextract || gMacPerl_AlwaysExtract) {
3224 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3225 if (!gMacPerl_AlwaysExtract)
3226 Perl_croak(aTHX_ "No Perl script found in input\n");
e55ac0fa 3227
bf4acbe4
GS		 3228 if (PL_doextract) /* require explicit override ? */
3229 if (!OverrideExtract(PL_origfilename))
3230 Perl_croak(aTHX_ "User aborted script\n");
3231 else
3232 PL_doextract = FALSE;
e55ac0fa 3233
bf4acbe4
GS		 3234 /* Pater peccavi, file does not have #! */
3235 PerlIO_rewind(PL_rsfp);
e55ac0fa 3236
bf4acbe4
GS		 3237 break;
3238 }
3239#else
3280af22
NIS		 3240 while (PL_doextract) {
3241 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
cea2e8a9 3242 Perl_croak(aTHX_ "No Perl script found in input\n");
bf4acbe4 3243#endif
4f0c37ba
IZ		 3244 s2 = s;
3245 if (*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))) {
3280af22
NIS		 3246 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3247 PL_doextract = FALSE;
6e72f9df 3248 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3249 s2 = s;
3250 while (*s == ' ' || *s == '\t') s++;
3251 if (*s++ == '-') {
3252 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3253 if (strnEQ(s2-4,"perl",4))
3254 /*SUPPRESS 530*/
155aba94
GS		 3255 while ((s = moreswitches(s)))
3256 ;
33b78306 3257 }
95e8664e 3258#ifdef MACOS_TRADITIONAL
e55ac0fa
HS		 3259 /* We are always searching for the #!perl line in MacPerl,
3260 * so if we find it, still keep the line count correct
3261 * by counting lines we already skipped over
3262 */
3263 for (; maclines > 0 ; maclines--)
3264 PerlIO_ungetc(PL_rsfp, '\n');
3265
95e8664e 3266 break;
e55ac0fa
HS		 3267
3268 /* gMacPerl_AlwaysExtract is false in MPW tool */
3269 } else if (gMacPerl_AlwaysExtract) {
3270 ++maclines;
95e8664e 3271#endif
83025b21
LW		 3272 }
3273 }
3274}
3275
afe37c7d 3276
76e3520e 3277STATIC void
cea2e8a9 3278S_init_ids(pTHX)
352d5a3a 3279{
d8eceb89
JH		 3280 PL_uid = PerlProc_getuid();
3281 PL_euid = PerlProc_geteuid();
3282 PL_gid = PerlProc_getgid();
3283 PL_egid = PerlProc_getegid();
748a9306 3284#ifdef VMS
b28d0864
NIS		 3285 PL_uid |= PL_gid << 16;
3286 PL_euid |= PL_egid << 16;
748a9306 3287#endif
3280af22 3288 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
748a9306 3289}
79072805 3290
76e3520e 3291STATIC void
cea2e8a9 3292S_forbid_setid(pTHX_ char *s)
bbce6d69 3293{
3280af22 3294 if (PL_euid != PL_uid)
cea2e8a9 3295 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3280af22 3296 if (PL_egid != PL_gid)
cea2e8a9 3297 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
bbce6d69 3298}
3299
1ee4443e
IZ		 3300void
3301Perl_init_debugger(pTHX)
748a9306 3302{
1ee4443e
IZ		 3303 HV *ostash = PL_curstash;
3304
3280af22
NIS		 3305 PL_curstash = PL_debstash;
3306 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3307 AvREAL_off(PL_dbargs);
3308 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3309 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3310 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
1ee4443e 3311 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3280af22 3312 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3313 sv_setiv(PL_DBsingle, 0);
3280af22 3314 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3315 sv_setiv(PL_DBtrace, 0);
3280af22 3316 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3317 sv_setiv(PL_DBsignal, 0);
06492da6
SF		 3318 PL_DBassertion = GvSV((gv_fetchpv("assertion", GV_ADDMULTI, SVt_PV)));
3319 sv_setiv(PL_DBassertion, 0);
1ee4443e 3320 PL_curstash = ostash;
352d5a3a
LW		 3321}
3322
2ce36478
SM		 3323#ifndef STRESS_REALLOC
3324#define REASONABLE(size) (size)
3325#else
3326#define REASONABLE(size) (1) /* unreasonable */
3327#endif
3328
11343788 3329void
cea2e8a9 3330Perl_init_stacks(pTHX)
79072805 3331{
e336de0d 3332 /* start with 128-item stack and 8K cxstack */
3280af22 3333 PL_curstackinfo = new_stackinfo(REASONABLE(128),
e336de0d 3334 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3280af22
NIS		 3335 PL_curstackinfo->si_type = PERLSI_MAIN;
3336 PL_curstack = PL_curstackinfo->si_stack;
3337 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
79072805 3338
3280af22
NIS		 3339 PL_stack_base = AvARRAY(PL_curstack);
3340 PL_stack_sp = PL_stack_base;
3341 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
8990e307 3342
3280af22
NIS		 3343 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3344 PL_tmps_floor = -1;
3345 PL_tmps_ix = -1;
3346 PL_tmps_max = REASONABLE(128);
8990e307 3347
3280af22
NIS		 3348 New(54,PL_markstack,REASONABLE(32),I32);
3349 PL_markstack_ptr = PL_markstack;
3350 PL_markstack_max = PL_markstack + REASONABLE(32);
79072805 3351
ce2f7c3b 3352 SET_MARK_OFFSET;
e336de0d 3353
3280af22
NIS		 3354 New(54,PL_scopestack,REASONABLE(32),I32);
3355 PL_scopestack_ix = 0;
3356 PL_scopestack_max = REASONABLE(32);
79072805 3357
3280af22
NIS		 3358 New(54,PL_savestack,REASONABLE(128),ANY);
3359 PL_savestack_ix = 0;
3360 PL_savestack_max = REASONABLE(128);
79072805 3361
3280af22
NIS		 3362 New(54,PL_retstack,REASONABLE(16),OP*);
3363 PL_retstack_ix = 0;
3364 PL_retstack_max = REASONABLE(16);
378cc40b 3365}
33b78306 3366
2ce36478
SM		 3367#undef REASONABLE
3368
76e3520e 3369STATIC void
cea2e8a9 3370S_nuke_stacks(pTHX)
6e72f9df 3371{
3280af22
NIS		 3372 while (PL_curstackinfo->si_next)
3373 PL_curstackinfo = PL_curstackinfo->si_next;
3374 while (PL_curstackinfo) {
3375 PERL_SI *p = PL_curstackinfo->si_prev;
bac4b2ad 3376 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3280af22
NIS		 3377 Safefree(PL_curstackinfo->si_cxstack);
3378 Safefree(PL_curstackinfo);
3379 PL_curstackinfo = p;
e336de0d 3380 }
3280af22
NIS		 3381 Safefree(PL_tmps_stack);
3382 Safefree(PL_markstack);
3383 Safefree(PL_scopestack);
3384 Safefree(PL_savestack);
3385 Safefree(PL_retstack);
378cc40b 3386}
33b78306 3387
76e3520e 3388STATIC void
cea2e8a9 3389S_init_lexer(pTHX)
8990e307 3390{
06039172 3391 PerlIO *tmpfp;
3280af22
NIS		 3392 tmpfp = PL_rsfp;
3393 PL_rsfp = Nullfp;
3394 lex_start(PL_linestr);
3395 PL_rsfp = tmpfp;
79cb57f6 3396 PL_subname = newSVpvn("main",4);
8990e307
LW		 3397}
3398
76e3520e 3399STATIC void
cea2e8a9 3400S_init_predump_symbols(pTHX)
45d8adaa 3401{
93a17b20 3402 GV *tmpgv;
af8c498a 3403 IO *io;
79072805 3404
864dbfa3 3405 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3280af22
NIS		 3406 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3407 GvMULTI_on(PL_stdingv);
af8c498a 3408 io = GvIOp(PL_stdingv);
a04651f4 3409 IoTYPE(io) = IoTYPE_RDONLY;
af8c498a 3410 IoIFP(io) = PerlIO_stdin();
adbc6bb1 3411 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
a5f75d66 3412 GvMULTI_on(tmpgv);
af8c498a 3413 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3414
85e6fe83 3415 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
a5f75d66 3416 GvMULTI_on(tmpgv);
af8c498a 3417 io = GvIOp(tmpgv);
a04651f4 3418 IoTYPE(io) = IoTYPE_WRONLY;
af8c498a 3419 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
4633a7c4 3420 setdefout(tmpgv);
adbc6bb1 3421 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
a5f75d66 3422 GvMULTI_on(tmpgv);
af8c498a 3423 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3424
bf49b057
GS		 3425 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3426 GvMULTI_on(PL_stderrgv);
3427 io = GvIOp(PL_stderrgv);
a04651f4 3428 IoTYPE(io) = IoTYPE_WRONLY;
af8c498a 3429 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
adbc6bb1 3430 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
a5f75d66 3431 GvMULTI_on(tmpgv);
af8c498a 3432 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3433
3280af22 3434 PL_statname = NEWSV(66,0); /* last filename we did stat on */
ab821d7f 3435
bf4acbe4
GS		 3436 if (PL_osname)
3437 Safefree(PL_osname);
3438 PL_osname = savepv(OSNAME);
79072805 3439}
33b78306 3440
a11ec5a9
RGS		 3441void
3442Perl_init_argv_symbols(pTHX_ register int argc, register char **argv)
33b78306 3443{
79072805 3444 char *s;
79072805 3445 argc--,argv++; /* skip name of script */
3280af22 3446 if (PL_doswitches) {
79072805
LW		 3447 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3448 if (!argv[0][1])
3449 break;
379d538a 3450 if (argv[0][1] == '-' && !argv[0][2]) {
79072805
LW		 3451 argc--,argv++;
3452 break;
3453 }
155aba94 3454 if ((s = strchr(argv[0], '='))) {
79072805 3455 *s++ = '\0';
85e6fe83 3456 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
79072805
LW		 3457 }
3458 else
85e6fe83 3459 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
fe14fcc3 3460 }
79072805 3461 }
a11ec5a9
RGS		 3462 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3463 GvMULTI_on(PL_argvgv);
3464 (void)gv_AVadd(PL_argvgv);
3465 av_clear(GvAVn(PL_argvgv));
3466 for (; argc > 0; argc--,argv++) {
3467 SV *sv = newSVpv(argv[0],0);
3468 av_push(GvAVn(PL_argvgv),sv);
ce81ff12
JH		 3469 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
3470 if (PL_unicode & PERL_UNICODE_ARGV_FLAG)
3471 SvUTF8_on(sv);
3472 }
a05d7ebb
JH		 3473 if (PL_unicode & PERL_UNICODE_WIDESYSCALLS_FLAG) /* Sarathy? */
3474 (void)sv_utf8_decode(sv);
a11ec5a9
RGS		 3475 }
3476 }
3477}
3478
04fee9b5
NIS		 3479#ifdef HAS_PROCSELFEXE
3480/* This is a function so that we don't hold on to MAXPATHLEN
8338e367 3481 bytes of stack longer than necessary
04fee9b5
NIS		 3482 */
3483STATIC void
3484S_procself_val(pTHX_ SV *sv, char *arg0)
3485{
3486 char buf[MAXPATHLEN];
d13a6521 3487 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
75745e22
TJ		 3488
3489 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
3490 includes a spurious NUL which will cause $^X to fail in system