This is a live mirror of the Perl 5 development currently hosted at https://github.com/perl/perl5
https://perl5.git.perl.org / perl5.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
Upgrade to cperl-mode 5.0, from IlyaZ.
[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; \
68 } \
69 else { \
70 PERL_SET_THX(my_perl); \
06d86050 71 } \
06d86050 72 } STMT_END
3db8f154 73#else
06d86050
GS		 74# define INIT_TLS_AND_INTERP \
75 STMT_START { \
76 if (!PL_curinterp) { \
77 PERL_SET_INTERP(my_perl); \
78 } \
79 PERL_SET_THX(my_perl); \
80 } STMT_END
81# endif
06d86050 82
32e30700
GS		 83#ifdef PERL_IMPLICIT_SYS
84PerlInterpreter *
7766f137
GS		 85perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
86 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
32e30700
GS		 87 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
88 struct IPerlDir* ipD, struct IPerlSock* ipS,
89 struct IPerlProc* ipP)
90{
91 PerlInterpreter *my_perl;
32e30700
GS		 92 /* New() needs interpreter, so call malloc() instead */
93 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
06d86050 94 INIT_TLS_AND_INTERP;
32e30700
GS		 95 Zero(my_perl, 1, PerlInterpreter);
96 PL_Mem = ipM;
7766f137
GS		 97 PL_MemShared = ipMS;
98 PL_MemParse = ipMP;
32e30700
GS		 99 PL_Env = ipE;
100 PL_StdIO = ipStd;
101 PL_LIO = ipLIO;
102 PL_Dir = ipD;
103 PL_Sock = ipS;
104 PL_Proc = ipP;
7766f137 105
32e30700
GS		 106 return my_perl;
107}
108#else
954c1994
GS		 109
110/*
ccfc67b7
JH		 111=head1 Embedding Functions
112
954c1994
GS		 113=for apidoc perl_alloc
114
115Allocates a new Perl interpreter. See L<perlembed>.
116
117=cut
118*/
119
93a17b20 120PerlInterpreter *
cea2e8a9 121perl_alloc(void)
79072805 122{
cea2e8a9 123 PerlInterpreter *my_perl;
35d7cf2c
JH		 124#ifdef USE_5005THREADS
125 dTHX;
126#endif
79072805 127
54aff467 128 /* New() needs interpreter, so call malloc() instead */
e8ee3774 129 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 130
06d86050 131 INIT_TLS_AND_INTERP;
dedcbb81 132 Zero(my_perl, 1, PerlInterpreter);
cea2e8a9 133 return my_perl;
79072805 134}
32e30700 135#endif /* PERL_IMPLICIT_SYS */
79072805 136
954c1994
GS		 137/*
138=for apidoc perl_construct
139
140Initializes a new Perl interpreter. See L<perlembed>.
141
142=cut
143*/
144
79072805 145void
0cb96387 146perl_construct(pTHXx)
79072805 147{
8990e307 148#ifdef MULTIPLICITY
54aff467 149 init_interp();
ac27b0f5 150 PL_perl_destruct_level = 1;
54aff467
GS		 151#else
152 if (PL_perl_destruct_level > 0)
153 init_interp();
154#endif
155
33f46ff6 156 /* Init the real globals (and main thread)? */
3280af22 157 if (!PL_linestr) {
d90a703e
JH		 158#ifdef USE_ITHREADS
159 MUTEX_INIT(&PL_dollarzero_mutex); /* for $0 modifying */
160#endif
14dd3ad8 161#ifdef PERL_FLEXIBLE_EXCEPTIONS
0b94c7bb 162 PL_protect = MEMBER_TO_FPTR(Perl_default_protect); /* for exceptions */
14dd3ad8 163#endif
312caa8e 164
2aea9f8a
GS		 165 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
166
3280af22
NIS		 167 PL_linestr = NEWSV(65,79);
168 sv_upgrade(PL_linestr,SVt_PVIV);
79072805 169
3280af22 170 if (!SvREADONLY(&PL_sv_undef)) {
d689ffdd
JP		 171 /* set read-only and try to insure than we wont see REFCNT==0
172 very often */
173
3280af22
NIS		 174 SvREADONLY_on(&PL_sv_undef);
175 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
79072805 176
3280af22
NIS		 177 sv_setpv(&PL_sv_no,PL_No);
178 SvNV(&PL_sv_no);
179 SvREADONLY_on(&PL_sv_no);
180 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
79072805 181
3280af22
NIS		 182 sv_setpv(&PL_sv_yes,PL_Yes);
183 SvNV(&PL_sv_yes);
184 SvREADONLY_on(&PL_sv_yes);
185 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
6e72f9df 186 }
79072805 187
cea2e8a9 188 PL_sighandlerp = Perl_sighandler;
3280af22 189 PL_pidstatus = newHV();
79072805
LW		 190 }
191
8bfdd7d9 192 PL_rs = newSVpvn("\n", 1);
dc92893f 193
cea2e8a9 194 init_stacks();
79072805 195
748a9306 196 init_ids();
3280af22 197 PL_lex_state = LEX_NOTPARSING;
a5f75d66 198
312caa8e 199 JMPENV_BOOTSTRAP;
f86702cc 200 STATUS_ALL_SUCCESS;
201
0672f40e 202 init_i18nl10n(1);
36477c24 203 SET_NUMERIC_STANDARD();
0b5b802d 204
a7cb1f99
GS		 205 {
206 U8 *s;
207 PL_patchlevel = NEWSV(0,4);
155aba94 208 (void)SvUPGRADE(PL_patchlevel, SVt_PVNV);
a7cb1f99 209 if (PERL_REVISION > 127 || PERL_VERSION > 127 || PERL_SUBVERSION > 127)
806e7201 210 SvGROW(PL_patchlevel, UTF8_MAXLEN*3+1);
a7cb1f99 211 s = (U8*)SvPVX(PL_patchlevel);
9041c2e3
NIS		 212 /* Build version strings using "native" characters */
213 s = uvchr_to_utf8(s, (UV)PERL_REVISION);
214 s = uvchr_to_utf8(s, (UV)PERL_VERSION);
215 s = uvchr_to_utf8(s, (UV)PERL_SUBVERSION);
a7cb1f99
GS		 216 *s = '\0';
217 SvCUR_set(PL_patchlevel, s - (U8*)SvPVX(PL_patchlevel));
218 SvPOK_on(PL_patchlevel);
00d6e121
MB		 219 SvNVX(PL_patchlevel) = (NV)PERL_REVISION +
220 ((NV)PERL_VERSION / (NV)1000) +
221 ((NV)PERL_SUBVERSION / (NV)1000000);
a7cb1f99
GS		 222 SvNOK_on(PL_patchlevel); /* dual valued */
223 SvUTF8_on(PL_patchlevel);
224 SvREADONLY_on(PL_patchlevel);
225 }
79072805 226
ab821d7f 227#if defined(LOCAL_PATCH_COUNT)
3280af22 228 PL_localpatches = local_patches; /* For possible -v */
ab821d7f 229#endif
230
52853b95
GS		 231#ifdef HAVE_INTERP_INTERN
232 sys_intern_init();
233#endif
234
3a1ee7e8 235 PerlIO_init(aTHX); /* Hook to IO system */
760ac839 236
3280af22
NIS		 237 PL_fdpid = newAV(); /* for remembering popen pids by fd */
238 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
24944567 239 PL_errors = newSVpvn("",0);
48c6b404 240 sv_setpvn(PERL_DEBUG_PAD(0), "", 0); /* For regex debugging. */
1f483ca1
JH		 241 sv_setpvn(PERL_DEBUG_PAD(1), "", 0); /* ext/re needs these */
242 sv_setpvn(PERL_DEBUG_PAD(2), "", 0); /* even without DEBUGGING. */
1fcf4c12 243#ifdef USE_ITHREADS
13137afc
AB		 244 PL_regex_padav = newAV();
245 av_push(PL_regex_padav,(SV*)newAV()); /* First entry is an array of empty elements */
246 PL_regex_pad = AvARRAY(PL_regex_padav);
1fcf4c12 247#endif
e5dd39fc 248#ifdef USE_REENTRANT_API
59bd0823 249 Perl_reentrant_init(aTHX);
e5dd39fc 250#endif
3d47000e
AB		 251
252 /* Note that strtab is a rather special HV. Assumptions are made
253 about not iterating on it, and not adding tie magic to it.
254 It is properly deallocated in perl_destruct() */
255 PL_strtab = newHV();
256
3d47000e
AB		 257 HvSHAREKEYS_off(PL_strtab); /* mandatory */
258 hv_ksplit(PL_strtab, 512);
259
0631ea03
AB		 260#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
261 _dyld_lookup_and_bind
262 ("__environ", (unsigned long *) &environ_pointer, NULL);
263#endif /* environ */
264
265#ifdef USE_ENVIRON_ARRAY
266 PL_origenviron = environ;
267#endif
268
5311654c
JH		 269 /* Use sysconf(_SC_CLK_TCK) if available, if not
270 * available or if the sysconf() fails, use the HZ. */
271#if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK)
272 PL_clocktick = sysconf(_SC_CLK_TCK);
273 if (PL_clocktick <= 0)
274#endif
275 PL_clocktick = HZ;
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
a0d0e21e 389 if (destruct_level == 0){
8990e307 390
a0d0e21e 391 DEBUG_P(debprofdump());
ac27b0f5 392
56a2bab7
NIS		 393#if defined(PERLIO_LAYERS)
394 /* No more IO - including error messages ! */
395 PerlIO_cleanup(aTHX);
396#endif
397
a0d0e21e 398 /* The exit() function will do everything that needs doing. */
b47cad08 399 return STATUS_NATIVE_EXPORT;
a0d0e21e 400 }
5dd60ef7 401
551a8b83 402 /* jettison our possibly duplicated environment */
4b647fb0
DM		 403 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
404 * so we certainly shouldn't free it here
405 */
406#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
4efc5df6
GS		 407 if (environ != PL_origenviron
408#ifdef USE_ITHREADS
409 /* only main thread can free environ[0] contents */
410 && PL_curinterp == aTHX
411#endif
412 )
413 {
551a8b83
JH		 414 I32 i;
415
416 for (i = 0; environ[i]; i++)
4b420006 417 safesysfree(environ[i]);
0631ea03 418
4b420006
JH		 419 /* Must use safesysfree() when working with environ. */
420 safesysfree(environ);
551a8b83
JH		 421
422 environ = PL_origenviron;
423 }
424#endif
425
5f8cb046
DM		 426#ifdef USE_ITHREADS
427 /* the syntax tree is shared between clones
428 * so op_free(PL_main_root) only ReREFCNT_dec's
429 * REGEXPs in the parent interpreter
430 * we need to manually ReREFCNT_dec for the clones
431 */
432 {
433 I32 i = AvFILLp(PL_regex_padav) + 1;
434 SV **ary = AvARRAY(PL_regex_padav);
435
436 while (i) {
35061a7e 437 SV *resv = ary[--i];
ba89bb6e 438 REGEXP *re = INT2PTR(REGEXP *,SvIVX(resv));
35061a7e
DM		 439
440 if (SvFLAGS(resv) & SVf_BREAK) {
577e12cc 441 /* this is PL_reg_curpm, already freed
35061a7e
DM		 442 * flag is set in regexec.c:S_regtry
443 */
444 SvFLAGS(resv) &= ~SVf_BREAK;
3a1ee7e8 445 }
1cc8b4c5
AB		 446 else if(SvREPADTMP(resv)) {
447 SvREPADTMP_off(resv);
448 }
35061a7e 449 else {
5f8cb046
DM		 450 ReREFCNT_dec(re);
451 }
452 }
453 }
454 SvREFCNT_dec(PL_regex_padav);
455 PL_regex_padav = Nullav;
456 PL_regex_pad = NULL;
457#endif
458
5f05dabc 459 /* loosen bonds of global variables */
460
3280af22
NIS		 461 if(PL_rsfp) {
462 (void)PerlIO_close(PL_rsfp);
463 PL_rsfp = Nullfp;
8ebc5c01 464 }
465
466 /* Filters for program text */
3280af22
NIS		 467 SvREFCNT_dec(PL_rsfp_filters);
468 PL_rsfp_filters = Nullav;
8ebc5c01 469
470 /* switches */
3280af22
NIS		 471 PL_preprocess = FALSE;
472 PL_minus_n = FALSE;
473 PL_minus_p = FALSE;
474 PL_minus_l = FALSE;
475 PL_minus_a = FALSE;
476 PL_minus_F = FALSE;
477 PL_doswitches = FALSE;
599cee73 478 PL_dowarn = G_WARN_OFF;
3280af22
NIS		 479 PL_doextract = FALSE;
480 PL_sawampersand = FALSE; /* must save all match strings */
3280af22
NIS		 481 PL_unsafe = FALSE;
482
483 Safefree(PL_inplace);
484 PL_inplace = Nullch;
a7cb1f99 485 SvREFCNT_dec(PL_patchlevel);
3280af22
NIS		 486
487 if (PL_e_script) {
488 SvREFCNT_dec(PL_e_script);
489 PL_e_script = Nullsv;
8ebc5c01 490 }
491
492 /* magical thingies */
493
7889fe52
NIS		 494 SvREFCNT_dec(PL_ofs_sv); /* $, */
495 PL_ofs_sv = Nullsv;
5f05dabc 496
7889fe52
NIS		 497 SvREFCNT_dec(PL_ors_sv); /* $\ */
498 PL_ors_sv = Nullsv;
8ebc5c01 499
3280af22
NIS		 500 SvREFCNT_dec(PL_rs); /* $/ */
501 PL_rs = Nullsv;
dc92893f 502
d33b2eba
GS		 503 PL_multiline = 0; /* $* */
504 Safefree(PL_osname); /* $^O */
505 PL_osname = Nullch;
5f05dabc 506
3280af22
NIS		 507 SvREFCNT_dec(PL_statname);
508 PL_statname = Nullsv;
509 PL_statgv = Nullgv;
5f05dabc 510
8ebc5c01 511 /* defgv, aka *_ should be taken care of elsewhere */
512
8ebc5c01 513 /* clean up after study() */
3280af22
NIS		 514 SvREFCNT_dec(PL_lastscream);
515 PL_lastscream = Nullsv;
516 Safefree(PL_screamfirst);
517 PL_screamfirst = 0;
518 Safefree(PL_screamnext);
519 PL_screamnext = 0;
8ebc5c01 520
7d5ea4e7
GS		 521 /* float buffer */
522 Safefree(PL_efloatbuf);
523 PL_efloatbuf = Nullch;
524 PL_efloatsize = 0;
525
8ebc5c01 526 /* startup and shutdown function lists */
3280af22 527 SvREFCNT_dec(PL_beginav);
5a837c8f 528 SvREFCNT_dec(PL_beginav_save);
3280af22 529 SvREFCNT_dec(PL_endav);
7d30b5c4 530 SvREFCNT_dec(PL_checkav);
ece599bd 531 SvREFCNT_dec(PL_checkav_save);
3280af22
NIS		 532 SvREFCNT_dec(PL_initav);
533 PL_beginav = Nullav;
5a837c8f 534 PL_beginav_save = Nullav;
3280af22 535 PL_endav = Nullav;
7d30b5c4 536 PL_checkav = Nullav;
ece599bd 537 PL_checkav_save = Nullav;
3280af22 538 PL_initav = Nullav;
5618dfe8 539
8ebc5c01 540 /* shortcuts just get cleared */
3280af22 541 PL_envgv = Nullgv;
3280af22
NIS		 542 PL_incgv = Nullgv;
543 PL_hintgv = Nullgv;
544 PL_errgv = Nullgv;
545 PL_argvgv = Nullgv;
546 PL_argvoutgv = Nullgv;
547 PL_stdingv = Nullgv;
bf49b057 548 PL_stderrgv = Nullgv;
3280af22
NIS		 549 PL_last_in_gv = Nullgv;
550 PL_replgv = Nullgv;
5c831c24 551 PL_debstash = Nullhv;
8ebc5c01 552
553 /* reset so print() ends up where we expect */
554 setdefout(Nullgv);
5c831c24 555
7a1c5554
GS		 556 SvREFCNT_dec(PL_argvout_stack);
557 PL_argvout_stack = Nullav;
8ebc5c01 558
5c831c24
GS		 559 SvREFCNT_dec(PL_modglobal);
560 PL_modglobal = Nullhv;
561 SvREFCNT_dec(PL_preambleav);
562 PL_preambleav = Nullav;
563 SvREFCNT_dec(PL_subname);
564 PL_subname = Nullsv;
565 SvREFCNT_dec(PL_linestr);
566 PL_linestr = Nullsv;
567 SvREFCNT_dec(PL_pidstatus);
568 PL_pidstatus = Nullhv;
569 SvREFCNT_dec(PL_toptarget);
570 PL_toptarget = Nullsv;
571 SvREFCNT_dec(PL_bodytarget);
572 PL_bodytarget = Nullsv;
573 PL_formtarget = Nullsv;
574
d33b2eba 575 /* free locale stuff */
b9582b6a 576#ifdef USE_LOCALE_COLLATE
d33b2eba
GS		 577 Safefree(PL_collation_name);
578 PL_collation_name = Nullch;
b9582b6a 579#endif
d33b2eba 580
b9582b6a 581#ifdef USE_LOCALE_NUMERIC
d33b2eba
GS		 582 Safefree(PL_numeric_name);
583 PL_numeric_name = Nullch;
a453c169 584 SvREFCNT_dec(PL_numeric_radix_sv);
b9582b6a 585#endif
d33b2eba 586
5c831c24
GS		 587 /* clear utf8 character classes */
588 SvREFCNT_dec(PL_utf8_alnum);
589 SvREFCNT_dec(PL_utf8_alnumc);
590 SvREFCNT_dec(PL_utf8_ascii);
591 SvREFCNT_dec(PL_utf8_alpha);
592 SvREFCNT_dec(PL_utf8_space);
593 SvREFCNT_dec(PL_utf8_cntrl);
594 SvREFCNT_dec(PL_utf8_graph);
595 SvREFCNT_dec(PL_utf8_digit);
596 SvREFCNT_dec(PL_utf8_upper);
597 SvREFCNT_dec(PL_utf8_lower);
598 SvREFCNT_dec(PL_utf8_print);
599 SvREFCNT_dec(PL_utf8_punct);
600 SvREFCNT_dec(PL_utf8_xdigit);
601 SvREFCNT_dec(PL_utf8_mark);
602 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 603 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 604 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 605 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH		 606 SvREFCNT_dec(PL_utf8_idstart);
607 SvREFCNT_dec(PL_utf8_idcont);
5c831c24
GS		 608 PL_utf8_alnum = Nullsv;
609 PL_utf8_alnumc = Nullsv;
610 PL_utf8_ascii = Nullsv;
611 PL_utf8_alpha = Nullsv;
612 PL_utf8_space = Nullsv;
613 PL_utf8_cntrl = Nullsv;
614 PL_utf8_graph = Nullsv;
615 PL_utf8_digit = Nullsv;
616 PL_utf8_upper = Nullsv;
617 PL_utf8_lower = Nullsv;
618 PL_utf8_print = Nullsv;
619 PL_utf8_punct = Nullsv;
620 PL_utf8_xdigit = Nullsv;
621 PL_utf8_mark = Nullsv;
622 PL_utf8_toupper = Nullsv;
623 PL_utf8_totitle = Nullsv;
624 PL_utf8_tolower = Nullsv;
b4e400f9 625 PL_utf8_tofold = Nullsv;
82686b01
JH		 626 PL_utf8_idstart = Nullsv;
627 PL_utf8_idcont = Nullsv;
5c831c24 628
971a9dd3
GS		 629 if (!specialWARN(PL_compiling.cop_warnings))
630 SvREFCNT_dec(PL_compiling.cop_warnings);
5c831c24 631 PL_compiling.cop_warnings = Nullsv;
ac27b0f5
NIS		 632 if (!specialCopIO(PL_compiling.cop_io))
633 SvREFCNT_dec(PL_compiling.cop_io);
634 PL_compiling.cop_io = Nullsv;
05ec9bb3
NIS		 635 CopFILE_free(&PL_compiling);
636 CopSTASH_free(&PL_compiling);
5c831c24 637
a0d0e21e 638 /* Prepare to destruct main symbol table. */
5f05dabc 639
3280af22
NIS		 640 hv = PL_defstash;
641 PL_defstash = 0;
a0d0e21e 642 SvREFCNT_dec(hv);
5c831c24
GS		 643 SvREFCNT_dec(PL_curstname);
644 PL_curstname = Nullsv;
a0d0e21e 645
5a844595
GS		 646 /* clear queued errors */
647 SvREFCNT_dec(PL_errors);
648 PL_errors = Nullsv;
649
a0d0e21e 650 FREETMPS;
0453d815 651 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
3280af22 652 if (PL_scopestack_ix != 0)
9014280d 653 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
0453d815 654 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
3280af22
NIS		 655 (long)PL_scopestack_ix);
656 if (PL_savestack_ix != 0)
9014280d 657 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
0453d815 658 "Unbalanced saves: %ld more saves than restores\n",
3280af22
NIS		 659 (long)PL_savestack_ix);
660 if (PL_tmps_floor != -1)
9014280d 661 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
3280af22 662 (long)PL_tmps_floor + 1);
a0d0e21e 663 if (cxstack_ix != -1)
9014280d 664 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
ff0cee69 665 (long)cxstack_ix + 1);
a0d0e21e 666 }
8990e307
LW		 667
668 /* Now absolutely destruct everything, somehow or other, loops or no. */
d33b2eba 669 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
3280af22 670 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
5226ed68
JH		 671
672 /* the 2 is for PL_fdpid and PL_strtab */
673 while (PL_sv_count > 2 && sv_clean_all())
674 ;
675
d33b2eba
GS		 676 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
677 SvFLAGS(PL_fdpid) |= SVt_PVAV;
3280af22
NIS		 678 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
679 SvFLAGS(PL_strtab) |= SVt_PVHV;
d33b2eba 680
d4777f27
GS		 681 AvREAL_off(PL_fdpid); /* no surviving entries */
682 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
d33b2eba
GS		 683 PL_fdpid = Nullav;
684
6c644e78
GS		 685#ifdef HAVE_INTERP_INTERN
686 sys_intern_clear();
687#endif
688
6e72f9df 689 /* Destruct the global string table. */
690 {
691 /* Yell and reset the HeVAL() slots that are still holding refcounts,
692 * so that sv_free() won't fail on them.
693 */
694 I32 riter;
695 I32 max;
696 HE *hent;
697 HE **array;
698
699 riter = 0;
3280af22
NIS		 700 max = HvMAX(PL_strtab);
701 array = HvARRAY(PL_strtab);
6e72f9df 702 hent = array[0];
703 for (;;) {
0453d815 704 if (hent && ckWARN_d(WARN_INTERNAL)) {
9014280d 705 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
0453d815 706 "Unbalanced string table refcount: (%d) for \"%s\"",
6e72f9df 707 HeVAL(hent) - Nullsv, HeKEY(hent));
708 HeVAL(hent) = Nullsv;
709 hent = HeNEXT(hent);
710 }
711 if (!hent) {
712 if (++riter > max)
713 break;
714 hent = array[riter];
715 }
716 }
717 }
3280af22 718 SvREFCNT_dec(PL_strtab);
6e72f9df 719
e652bb2f 720#ifdef USE_ITHREADS
a0739874
DM		 721 /* free the pointer table used for cloning */
722 ptr_table_free(PL_ptr_table);
53186e96 723#endif
a0739874 724
d33b2eba
GS		 725 /* free special SVs */
726
727 SvREFCNT(&PL_sv_yes) = 0;
728 sv_clear(&PL_sv_yes);
729 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 730 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS		 731
732 SvREFCNT(&PL_sv_no) = 0;
733 sv_clear(&PL_sv_no);
734 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 735 SvFLAGS(&PL_sv_no) = 0;
01724ea0 736
9f375a43
DM		 737 {
738 int i;
739 for (i=0; i<=2; i++) {
740 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
741 sv_clear(PERL_DEBUG_PAD(i));
742 SvANY(PERL_DEBUG_PAD(i)) = NULL;
743 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
744 }
745 }
746
0453d815 747 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 748 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 749
eba0f806
DM		 750#ifdef DEBUG_LEAKING_SCALARS
751 if (PL_sv_count != 0) {
752 SV* sva;
753 SV* sv;
754 register SV* svend;
755
756 for (sva = PL_sv_arenaroot; sva; sva = (SV*)SvANY(sva)) {
757 svend = &sva[SvREFCNT(sva)];
758 for (sv = sva + 1; sv < svend; ++sv) {
759 if (SvTYPE(sv) != SVTYPEMASK) {
760 PerlIO_printf(Perl_debug_log, "leaked: 0x%p\n", sv);
761 }
762 }
763 }
764 }
765#endif
766
767
56a2bab7 768#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS		 769 /* No more IO - including error messages ! */
770 PerlIO_cleanup(aTHX);
771#endif
772
9f4bd222
NIS		 773 /* sv_undef needs to stay immortal until after PerlIO_cleanup
774 as currently layers use it rather than Nullsv as a marker
775 for no arg - and will try and SvREFCNT_dec it.
776 */
777 SvREFCNT(&PL_sv_undef) = 0;
778 SvREADONLY_off(&PL_sv_undef);
779
3280af22 780 Safefree(PL_origfilename);
3280af22 781 Safefree(PL_reg_start_tmp);
5c5e4c24
IZ		 782 if (PL_reg_curpm)
783 Safefree(PL_reg_curpm);
82ba1be6 784 Safefree(PL_reg_poscache);
3280af22
NIS		 785 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
786 Safefree(PL_op_mask);
cf36064f
GS		 787 Safefree(PL_psig_ptr);
788 Safefree(PL_psig_name);
2c2666fc 789 Safefree(PL_bitcount);
ce08f86c 790 Safefree(PL_psig_pend);
6e72f9df 791 nuke_stacks();
3280af22 792 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
ac27b0f5 793
a0d0e21e 794 DEBUG_P(debprofdump());
d33b2eba 795
e5dd39fc 796#ifdef USE_REENTRANT_API
10bc17b6 797 Perl_reentrant_free(aTHX);
e5dd39fc
AB		 798#endif
799
612f20c3
GS		 800 sv_free_arenas();
801
fc36a67e 802 /* As the absolutely last thing, free the non-arena SV for mess() */
803
3280af22 804 if (PL_mess_sv) {
9c63abab
GS		 805 /* it could have accumulated taint magic */
806 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
807 MAGIC* mg;
808 MAGIC* moremagic;
809 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
810 moremagic = mg->mg_moremagic;
14befaf4
DM		 811 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
812 && mg->mg_len >= 0)
9c63abab
GS		 813 Safefree(mg->mg_ptr);
814 Safefree(mg);
815 }
816 }
fc36a67e 817 /* we know that type >= SVt_PV */
155aba94 818 (void)SvOOK_off(PL_mess_sv);
3280af22
NIS		 819 Safefree(SvPVX(PL_mess_sv));
820 Safefree(SvANY(PL_mess_sv));
821 Safefree(PL_mess_sv);
822 PL_mess_sv = Nullsv;
fc36a67e 823 }
31d77e54 824 return STATUS_NATIVE_EXPORT;
79072805
LW		 825}
826
954c1994
GS		 827/*
828=for apidoc perl_free
829
830Releases a Perl interpreter. See L<perlembed>.
831
832=cut
833*/
834
79072805 835void
0cb96387 836perl_free(pTHXx)
79072805 837{
acfe0abc 838#if defined(WIN32) || defined(NETWARE)
ce3e5b80 839# if defined(PERL_IMPLICIT_SYS)
acfe0abc
GS		 840# ifdef NETWARE
841 void *host = nw_internal_host;
842# else
843 void *host = w32_internal_host;
844# endif
ce3e5b80 845 PerlMem_free(aTHXx);
acfe0abc 846# ifdef NETWARE
011f1a1a 847 nw_delete_internal_host(host);
acfe0abc
GS		 848# else
849 win32_delete_internal_host(host);
850# endif
1c0ca838
GS		 851# else
852 PerlMem_free(aTHXx);
853# endif
acfe0abc
GS		 854#else
855 PerlMem_free(aTHXx);
76e3520e 856#endif
79072805
LW		 857}
858
4b556e6c 859void
864dbfa3 860Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 861{
3280af22
NIS		 862 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
863 PL_exitlist[PL_exitlistlen].fn = fn;
864 PL_exitlist[PL_exitlistlen].ptr = ptr;
865 ++PL_exitlistlen;
4b556e6c
JD		 866}
867
954c1994
GS		 868/*
869=for apidoc perl_parse
870
871Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
872
873=cut
874*/
875
79072805 876int
0cb96387 877perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 878{
6224f72b 879 I32 oldscope;
6224f72b 880 int ret;
db36c5a1 881 dJMPENV;
4d1ff10f 882#ifdef USE_5005THREADS
cea2e8a9
GS		 883 dTHX;
884#endif
8d063cd8 885
a687059c
LW		 886#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
887#ifdef IAMSUID
888#undef IAMSUID
cea2e8a9 889 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
a687059c
LW		 890setuid perl scripts securely.\n");
891#endif
892#endif
893
3280af22 894 PL_origargc = argc;
e2975953 895 PL_origargv = argv;
a0d0e21e 896
3280af22 897 if (PL_do_undump) {
a0d0e21e
LW		 898
899 /* Come here if running an undumped a.out. */
900
3280af22
NIS		 901 PL_origfilename = savepv(argv[0]);
902 PL_do_undump = FALSE;
a0d0e21e 903 cxstack_ix = -1; /* start label stack again */
748a9306 904 init_ids();
a0d0e21e
LW		 905 init_postdump_symbols(argc,argv,env);
906 return 0;
907 }
908
3280af22 909 if (PL_main_root) {
3280af22
NIS		 910 op_free(PL_main_root);
911 PL_main_root = Nullop;
ff0cee69 912 }
3280af22
NIS		 913 PL_main_start = Nullop;
914 SvREFCNT_dec(PL_main_cv);
915 PL_main_cv = Nullcv;
79072805 916
3280af22
NIS		 917 time(&PL_basetime);
918 oldscope = PL_scopestack_ix;
599cee73 919 PL_dowarn = G_WARN_OFF;
f86702cc 920
14dd3ad8
GS		 921#ifdef PERL_FLEXIBLE_EXCEPTIONS
922 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
923#else
924 JMPENV_PUSH(ret);
925#endif
6224f72b 926 switch (ret) {
312caa8e 927 case 0:
14dd3ad8
GS		 928#ifndef PERL_FLEXIBLE_EXCEPTIONS
929 parse_body(env,xsinit);
930#endif
7d30b5c4
GS		 931 if (PL_checkav)
932 call_list(oldscope, PL_checkav);
14dd3ad8
GS		 933 ret = 0;
934 break;
6224f72b
GS		 935 case 1:
936 STATUS_ALL_FAILURE;
937 /* FALL THROUGH */
938 case 2:
939 /* my_exit() was called */
3280af22 940 while (PL_scopestack_ix > oldscope)
6224f72b
GS		 941 LEAVE;
942 FREETMPS;
3280af22 943 PL_curstash = PL_defstash;
7d30b5c4
GS		 944 if (PL_checkav)
945 call_list(oldscope, PL_checkav);
14dd3ad8
GS		 946 ret = STATUS_NATIVE_EXPORT;
947 break;
6224f72b 948 case 3:
bf49b057 949 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS		 950 ret = 1;
951 break;
6224f72b 952 }
14dd3ad8
GS		 953 JMPENV_POP;
954 return ret;
955}
956
957#ifdef PERL_FLEXIBLE_EXCEPTIONS
958STATIC void *
959S_vparse_body(pTHX_ va_list args)
960{
961 char **env = va_arg(args, char**);
962 XSINIT_t xsinit = va_arg(args, XSINIT_t);
963
964 return parse_body(env, xsinit);
312caa8e 965}
14dd3ad8 966#endif
312caa8e
CS		 967
968STATIC void *
14dd3ad8 969S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 970{
312caa8e
CS		 971 int argc = PL_origargc;
972 char **argv = PL_origargv;
312caa8e
CS		 973 char *scriptname = NULL;
974 int fdscript = -1;
975 VOL bool dosearch = FALSE;
976 char *validarg = "";
312caa8e
CS		 977 register SV *sv;
978 register char *s;
cf756827 979 char *cddir = Nullch;
312caa8e 980
3280af22 981 sv_setpvn(PL_linestr,"",0);
79cb57f6 982 sv = newSVpvn("",0); /* first used for -I flags */
6224f72b
GS		 983 SAVEFREESV(sv);
984 init_main_stash();
54310121 985
6224f72b
GS		 986 for (argc--,argv++; argc > 0; argc--,argv++) {
987 if (argv[0][0] != '-' || !argv[0][1])
988 break;
989#ifdef DOSUID
990 if (*validarg)
991 validarg = " PHOOEY ";
992 else
993 validarg = argv[0];
13281fa4 994#endif
6224f72b
GS		 995 s = argv[0]+1;
996 reswitch:
997 switch (*s) {
729a02f2
GS		 998 case 'C':
999#ifdef WIN32
c0932edc 1000 win32_argv2utf8(argc-1, argv+1);
729a02f2
GS		 1001 /* FALL THROUGH */
1002#endif
1d5472a9
GS		 1003#ifndef PERL_STRICT_CR
1004 case '\r':
1005#endif
6224f72b
GS		 1006 case ' ':
1007 case '0':
1008 case 'F':
1009 case 'a':
1010 case 'c':
1011 case 'd':
1012 case 'D':
1013 case 'h':
1014 case 'i':
1015 case 'l':
1016 case 'M':
1017 case 'm':
1018 case 'n':
1019 case 'p':
1020 case 's':
1021 case 'u':
1022 case 'U':
1023 case 'v':
599cee73
PM		 1024 case 'W':
1025 case 'X':
6224f72b 1026 case 'w':
06492da6 1027 case 'A':
155aba94 1028 if ((s = moreswitches(s)))
6224f72b
GS		 1029 goto reswitch;
1030 break;
33b78306 1031
1dbad523 1032 case 't':
317ea90d
MS		 1033 if( !PL_tainting ) {
1034 PL_taint_warn = TRUE;
1035 PL_tainting = TRUE;
1036 }
1037 s++;
1038 goto reswitch;
6224f72b 1039 case 'T':
3280af22 1040 PL_tainting = TRUE;
317ea90d 1041 PL_taint_warn = FALSE;
6224f72b
GS		 1042 s++;
1043 goto reswitch;
f86702cc 1044
6224f72b 1045 case 'e':
bf4acbe4
GS		 1046#ifdef MACOS_TRADITIONAL
1047 /* ignore -e for Dev:Pseudo argument */
1048 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
e55ac0fa 1049 break;
bf4acbe4 1050#endif
3280af22 1051 if (PL_euid != PL_uid || PL_egid != PL_gid)
cea2e8a9 1052 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
3280af22 1053 if (!PL_e_script) {
79cb57f6 1054 PL_e_script = newSVpvn("",0);
0cb96387 1055 filter_add(read_e_script, NULL);
6224f72b
GS		 1056 }
1057 if (*++s)
3280af22 1058 sv_catpv(PL_e_script, s);
6224f72b 1059 else if (argv[1]) {
3280af22 1060 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS		 1061 argc--,argv++;
1062 }
1063 else
cea2e8a9 1064 Perl_croak(aTHX_ "No code specified for -e");
3280af22 1065 sv_catpv(PL_e_script, "\n");
6224f72b 1066 break;
afe37c7d 1067
6224f72b
GS		 1068 case 'I': /* -I handled both here and in moreswitches() */
1069 forbid_setid("-I");
1070 if (!*++s && (s=argv[1]) != Nullch) {
1071 argc--,argv++;
1072 }
6224f72b 1073 if (s && *s) {
0df16ed7
GS		 1074 char *p;
1075 STRLEN len = strlen(s);
1076 p = savepvn(s, len);
574c798a 1077 incpush(p, TRUE, TRUE, FALSE);
0df16ed7
GS		 1078 sv_catpvn(sv, "-I", 2);
1079 sv_catpvn(sv, p, len);
1080 sv_catpvn(sv, " ", 1);
6224f72b 1081 Safefree(p);
0df16ed7
GS		 1082 }
1083 else
a67e862a 1084 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b
GS		 1085 break;
1086 case 'P':
1087 forbid_setid("-P");
3280af22 1088 PL_preprocess = TRUE;
6224f72b
GS		 1089 s++;
1090 goto reswitch;
1091 case 'S':
1092 forbid_setid("-S");
1093 dosearch = TRUE;
1094 s++;
1095 goto reswitch;
1096 case 'V':
3280af22
NIS		 1097 if (!PL_preambleav)
1098 PL_preambleav = newAV();
1099 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
6224f72b 1100 if (*++s != ':') {
3280af22 1101 PL_Sv = newSVpv("print myconfig();",0);
6224f72b 1102#ifdef VMS
6b88bc9c 1103 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
6224f72b 1104#else
3280af22 1105 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
6224f72b 1106#endif
3280af22 1107 sv_catpv(PL_Sv,"\" Compile-time options:");
6224f72b 1108# ifdef DEBUGGING
3280af22 1109 sv_catpv(PL_Sv," DEBUGGING");
6224f72b 1110# endif
6224f72b 1111# ifdef MULTIPLICITY
8f872242 1112 sv_catpv(PL_Sv," MULTIPLICITY");
6224f72b 1113# endif
4d1ff10f
AB		 1114# ifdef USE_5005THREADS
1115 sv_catpv(PL_Sv," USE_5005THREADS");
b363f7ed 1116# endif
ac5e8965
JH		 1117# ifdef USE_ITHREADS
1118 sv_catpv(PL_Sv," USE_ITHREADS");
1119# endif
10cc9d2a
JH		 1120# ifdef USE_64_BIT_INT
1121 sv_catpv(PL_Sv," USE_64_BIT_INT");
1122# endif
1123# ifdef USE_64_BIT_ALL
1124 sv_catpv(PL_Sv," USE_64_BIT_ALL");
ac5e8965
JH		 1125# endif
1126# ifdef USE_LONG_DOUBLE
1127 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1128# endif
53430762
JH		 1129# ifdef USE_LARGE_FILES
1130 sv_catpv(PL_Sv," USE_LARGE_FILES");
1131# endif
ac5e8965
JH		 1132# ifdef USE_SOCKS
1133 sv_catpv(PL_Sv," USE_SOCKS");
1134# endif
b363f7ed
GS		 1135# ifdef PERL_IMPLICIT_CONTEXT
1136 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1137# endif
1138# ifdef PERL_IMPLICIT_SYS
1139 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1140# endif
3280af22 1141 sv_catpv(PL_Sv,"\\n\",");
b363f7ed 1142
6224f72b
GS		 1143#if defined(LOCAL_PATCH_COUNT)
1144 if (LOCAL_PATCH_COUNT > 0) {
1145 int i;
3280af22 1146 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
6224f72b 1147 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
3280af22 1148 if (PL_localpatches[i])
cea2e8a9 1149 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
6224f72b
GS		 1150 }
1151 }
1152#endif
cea2e8a9 1153 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
6224f72b
GS		 1154#ifdef __DATE__
1155# ifdef __TIME__
cea2e8a9 1156 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
6224f72b 1157# else
cea2e8a9 1158 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
6224f72b
GS		 1159# endif
1160#endif
3280af22 1161 sv_catpv(PL_Sv, "; \
6224f72b 1162$\"=\"\\n \"; \
69fcd688
JH		 1163@env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; ");
1164#ifdef __CYGWIN__
1165 sv_catpv(PL_Sv,"\
1166push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
1167#endif
1168 sv_catpv(PL_Sv, "\
6224f72b
GS		 1169print \" \\%ENV:\\n @env\\n\" if @env; \
1170print \" \\@INC:\\n @INC\\n\";");
1171 }
1172 else {
3280af22
NIS		 1173 PL_Sv = newSVpv("config_vars(qw(",0);
1174 sv_catpv(PL_Sv, ++s);
1175 sv_catpv(PL_Sv, "))");
6224f72b
GS		 1176 s += strlen(s);
1177 }
3280af22 1178 av_push(PL_preambleav, PL_Sv);
6224f72b
GS		 1179 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1180 goto reswitch;
1181 case 'x':
3280af22 1182 PL_doextract = TRUE;
6224f72b
GS		 1183 s++;
1184 if (*s)
f4c556ac 1185 cddir = s;
6224f72b
GS		 1186 break;
1187 case 0:
1188 break;
1189 case '-':
1190 if (!*++s || isSPACE(*s)) {
1191 argc--,argv++;
1192 goto switch_end;
1193 }
1194 /* catch use of gnu style long options */
1195 if (strEQ(s, "version")) {
1196 s = "v";
1197 goto reswitch;
1198 }
1199 if (strEQ(s, "help")) {
1200 s = "h";
1201 goto reswitch;
1202 }
1203 s--;
1204 /* FALL THROUGH */
1205 default:
cea2e8a9 1206 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW		 1207 }
1208 }
6224f72b 1209 switch_end:
7f9e821f 1210 sv_setsv(get_sv("/", TRUE), PL_rs);
54310121 1211
f675dbe5
CB		 1212 if (
1213#ifndef SECURE_INTERNAL_GETENV
1214 !PL_tainting &&
1215#endif
cf756827 1216 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1217 {
cf756827 1218 char *popt = s;
74288ac8
GS		 1219 while (isSPACE(*s))
1220 s++;
317ea90d 1221 if (*s == '-' && *(s+1) == 'T') {
74288ac8 1222 PL_tainting = TRUE;
317ea90d
MS		 1223 PL_taint_warn = FALSE;
1224 }
74288ac8 1225 else {
cf756827 1226 char *popt_copy = Nullch;
74288ac8 1227 while (s && *s) {
4ea8f8fb 1228 char *d;
74288ac8
GS		 1229 while (isSPACE(*s))
1230 s++;
1231 if (*s == '-') {
1232 s++;
1233 if (isSPACE(*s))
1234 continue;
1235 }
4ea8f8fb 1236 d = s;
74288ac8
GS		 1237 if (!*s)
1238 break;
06492da6 1239 if (!strchr("DIMUdmtwA", *s))
cea2e8a9 1240 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS		 1241 while (++s && *s) {
1242 if (isSPACE(*s)) {
cf756827
GS		 1243 if (!popt_copy) {
1244 popt_copy = SvPVX(sv_2mortal(newSVpv(popt,0)));
1245 s = popt_copy + (s - popt);
1246 d = popt_copy + (d - popt);
1247 }
4ea8f8fb
MS		 1248 *s++ = '\0';
1249 break;
1250 }
1251 }
1c4db469 1252 if (*d == 't') {
317ea90d
MS		 1253 if( !PL_tainting ) {
1254 PL_taint_warn = TRUE;
1255 PL_tainting = TRUE;
1256 }
1c4db469
RGS		 1257 } else {
1258 moreswitches(d);
1259 }
6224f72b 1260 }
6224f72b
GS		 1261 }
1262 }
a0d0e21e 1263
317ea90d
MS		 1264 if (PL_taint_warn && PL_dowarn != G_WARN_ALL_OFF) {
1265 PL_compiling.cop_warnings = newSVpvn(WARN_TAINTstring, WARNsize);
1266 }
1267
6224f72b
GS		 1268 if (!scriptname)
1269 scriptname = argv[0];
3280af22 1270 if (PL_e_script) {
6224f72b
GS		 1271 argc++,argv--;
1272 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1273 }
1274 else if (scriptname == Nullch) {
1275#ifdef MSDOS
1276 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1277 moreswitches("h");
1278#endif
1279 scriptname = "-";
1280 }
1281
1282 init_perllib();
1283
1284 open_script(scriptname,dosearch,sv,&fdscript);
1285
1286 validate_suid(validarg, scriptname,fdscript);
1287
64ca3a65 1288#ifndef PERL_MICRO
0b5b802d
GS		 1289#if defined(SIGCHLD) || defined(SIGCLD)
1290 {
1291#ifndef SIGCHLD
1292# define SIGCHLD SIGCLD
1293#endif
1294 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1295 if (sigstate == SIG_IGN) {
1296 if (ckWARN(WARN_SIGNAL))
9014280d 1297 Perl_warner(aTHX_ packWARN(WARN_SIGNAL),
0b5b802d
GS		 1298 "Can't ignore signal CHLD, forcing to default");
1299 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1300 }
1301 }
1302#endif
64ca3a65 1303#endif
0b5b802d 1304
bf4acbe4
GS		 1305#ifdef MACOS_TRADITIONAL
1306 if (PL_doextract || gMacPerl_AlwaysExtract) {
1307#else
f4c556ac 1308 if (PL_doextract) {
bf4acbe4 1309#endif
6224f72b 1310 find_beginning();
f4c556ac
GS		 1311 if (cddir && PerlDir_chdir(cddir) < 0)
1312 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1313
1314 }
6224f72b 1315
3280af22
NIS		 1316 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1317 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1318 CvUNIQUE_on(PL_compcv);
1319
dd2155a4 1320 CvPADLIST(PL_compcv) = pad_new(0);
4d1ff10f 1321#ifdef USE_5005THREADS
533c011a
NIS		 1322 CvOWNER(PL_compcv) = 0;
1323 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1324 MUTEX_INIT(CvMUTEXP(PL_compcv));
4d1ff10f 1325#endif /* USE_5005THREADS */
6224f72b 1326
0c4f7ff0 1327 boot_core_PerlIO();
6224f72b 1328 boot_core_UNIVERSAL();
9a34ef1d 1329#ifndef PERL_MICRO
09bef843 1330 boot_core_xsutils();
9a34ef1d 1331#endif
6224f72b
GS		 1332
1333 if (xsinit)
acfe0abc 1334 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 1335#ifndef PERL_MICRO
ed79a026 1336#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
c5be433b 1337 init_os_extras();
6224f72b 1338#endif
64ca3a65 1339#endif
6224f72b 1340
29209bc5 1341#ifdef USE_SOCKS
1b9c9cf5
DH		 1342# ifdef HAS_SOCKS5_INIT
1343 socks5_init(argv[0]);
1344# else
29209bc5 1345 SOCKSinit(argv[0]);
1b9c9cf5 1346# endif
ac27b0f5 1347#endif
29209bc5 1348
6224f72b
GS		 1349 init_predump_symbols();
1350 /* init_postdump_symbols not currently designed to be called */
1351 /* more than once (ENV isn't cleared first, for example) */
1352 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 1353 if (!PL_do_undump)
6224f72b
GS		 1354 init_postdump_symbols(argc,argv,env);
1355
a05d7ebb
JH		 1356 /* PL_unicode is turned on by -C or by $ENV{PERL_UNICODE}.
1357 * PL_utf8locale is conditionally turned on by
085a54d9 1358 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 1359 * look like the user wants to use UTF-8. */
06e66572
JH		 1360 if (PL_unicode) {
1361 /* Requires init_predump_symbols(). */
a05d7ebb 1362 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH		 1363 IO* io;
1364 PerlIO* fp;
1365 SV* sv;
1366
a05d7ebb 1367 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 1368 * and the default open disciplines. */
a05d7ebb
JH		 1369 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
1370 PL_stdingv && (io = GvIO(PL_stdingv)) &&
1371 (fp = IoIFP(io)))
1372 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
1373 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
1374 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
1375 (fp = IoOFP(io)))
1376 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
1377 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
1378 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
1379 (fp = IoOFP(io)))
1380 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
1381 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
1382 (sv = GvSV(gv_fetchpv("\017PEN", TRUE, SVt_PV)))) {
1383 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
1384 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
1385 if (in) {
1386 if (out)
1387 sv_setpvn(sv, ":utf8\0:utf8", 11);
1388 else
1389 sv_setpvn(sv, ":utf8\0", 6);
1390 }
1391 else if (out)
1392 sv_setpvn(sv, "\0:utf8", 6);
1393 SvSETMAGIC(sv);
1394 }
b310b053
JH		 1395 }
1396 }
1397
4ffa73a3
JH		 1398 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
1399 if (strEQ(s, "unsafe"))
1400 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
1401 else if (strEQ(s, "safe"))
1402 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
1403 else
1404 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
1405 }
1406
6224f72b
GS		 1407 init_lexer();
1408
1409 /* now parse the script */
1410
93189314 1411 SETERRNO(0,SS_NORMAL);
3280af22 1412 PL_error_count = 0;
bf4acbe4
GS		 1413#ifdef MACOS_TRADITIONAL
1414 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1415 if (PL_minus_c)
1416 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1417 else {
1418 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1419 MacPerl_MPWFileName(PL_origfilename));
1420 }
1421 }
1422#else
3280af22
NIS		 1423 if (yyparse() || PL_error_count) {
1424 if (PL_minus_c)
cea2e8a9 1425 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 1426 else {
cea2e8a9 1427 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 1428 PL_origfilename);
6224f72b
GS		 1429 }
1430 }
bf4acbe4 1431#endif
57843af0 1432 CopLINE_set(PL_curcop, 0);
3280af22
NIS		 1433 PL_curstash = PL_defstash;
1434 PL_preprocess = FALSE;
1435 if (PL_e_script) {
1436 SvREFCNT_dec(PL_e_script);
1437 PL_e_script = Nullsv;
6224f72b
GS		 1438 }
1439
3280af22 1440 if (PL_do_undump)
6224f72b
GS		 1441 my_unexec();
1442
57843af0
GS		 1443 if (isWARN_ONCE) {
1444 SAVECOPFILE(PL_curcop);
1445 SAVECOPLINE(PL_curcop);
3280af22 1446 gv_check(PL_defstash);
57843af0 1447 }
6224f72b
GS		 1448
1449 LEAVE;
1450 FREETMPS;
1451
1452#ifdef MYMALLOC
1453 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1454 dump_mstats("after compilation:");
1455#endif
1456
1457 ENTER;
3280af22 1458 PL_restartop = 0;
312caa8e 1459 return NULL;
6224f72b
GS		 1460}
1461
954c1994
GS		 1462/*
1463=for apidoc perl_run
1464
1465Tells a Perl interpreter to run. See L<perlembed>.
1466
1467=cut
1468*/
1469
6224f72b 1470int
0cb96387 1471perl_run(pTHXx)
6224f72b 1472{
6224f72b 1473 I32 oldscope;
14dd3ad8 1474 int ret = 0;
db36c5a1 1475 dJMPENV;
4d1ff10f 1476#ifdef USE_5005THREADS
cea2e8a9
GS		 1477 dTHX;
1478#endif
6224f72b 1479
3280af22 1480 oldscope = PL_scopestack_ix;
96e176bf
CL		 1481#ifdef VMS
1482 VMSISH_HUSHED = 0;
1483#endif
6224f72b 1484
14dd3ad8 1485#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1486 redo_body:
14dd3ad8
GS		 1487 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1488#else
1489 JMPENV_PUSH(ret);
1490#endif
6224f72b
GS		 1491 switch (ret) {
1492 case 1:
1493 cxstack_ix = -1; /* start context stack again */
312caa8e 1494 goto redo_body;
14dd3ad8
GS		 1495 case 0: /* normal completion */
1496#ifndef PERL_FLEXIBLE_EXCEPTIONS
1497 redo_body:
1498 run_body(oldscope);
1499#endif
1500 /* FALL THROUGH */
1501 case 2: /* my_exit() */
3280af22 1502 while (PL_scopestack_ix > oldscope)
6224f72b
GS		 1503 LEAVE;
1504 FREETMPS;
3280af22 1505 PL_curstash = PL_defstash;
3a1ee7e8 1506 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
31d77e54
AB		 1507 PL_endav && !PL_minus_c)
1508 call_list(oldscope, PL_endav);
6224f72b
GS		 1509#ifdef MYMALLOC
1510 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1511 dump_mstats("after execution: ");
1512#endif
14dd3ad8
GS		 1513 ret = STATUS_NATIVE_EXPORT;
1514 break;
6224f72b 1515 case 3:
312caa8e
CS		 1516 if (PL_restartop) {
1517 POPSTACK_TO(PL_mainstack);
1518 goto redo_body;
6224f72b 1519 }
bf49b057 1520 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 1521 FREETMPS;
14dd3ad8
GS		 1522 ret = 1;
1523 break;
6224f72b
GS		 1524 }
1525
14dd3ad8
GS		 1526 JMPENV_POP;
1527 return ret;
312caa8e
CS		 1528}
1529
14dd3ad8 1530#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1531STATIC void *
14dd3ad8 1532S_vrun_body(pTHX_ va_list args)
312caa8e 1533{
312caa8e
CS		 1534 I32 oldscope = va_arg(args, I32);
1535
14dd3ad8
GS		 1536 return run_body(oldscope);
1537}
1538#endif
1539
1540
1541STATIC void *
1542S_run_body(pTHX_ I32 oldscope)
1543{
6224f72b 1544 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 1545 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 1546
3280af22 1547 if (!PL_restartop) {
6224f72b
GS		 1548 DEBUG_x(dump_all());
1549 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
b900a521
JH		 1550 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1551 PTR2UV(thr)));
6224f72b 1552
3280af22 1553 if (PL_minus_c) {
bf4acbe4 1554#ifdef MACOS_TRADITIONAL
e69a2255
JH		 1555 PerlIO_printf(Perl_error_log, "%s%s syntax OK\n",
1556 (gMacPerl_ErrorFormat ? "# " : ""),
1557 MacPerl_MPWFileName(PL_origfilename));
bf4acbe4 1558#else
bf49b057 1559 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
bf4acbe4 1560#endif
6224f72b
GS		 1561 my_exit(0);
1562 }
3280af22 1563 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 1564 sv_setiv(PL_DBsingle, 1);
3280af22
NIS		 1565 if (PL_initav)
1566 call_list(oldscope, PL_initav);
6224f72b
GS		 1567 }
1568
1569 /* do it */
1570
3280af22 1571 if (PL_restartop) {
533c011a 1572 PL_op = PL_restartop;
3280af22 1573 PL_restartop = 0;
cea2e8a9 1574 CALLRUNOPS(aTHX);
6224f72b 1575 }
3280af22
NIS		 1576 else if (PL_main_start) {
1577 CvDEPTH(PL_main_cv) = 1;
533c011a 1578 PL_op = PL_main_start;
cea2e8a9 1579 CALLRUNOPS(aTHX);
6224f72b
GS		 1580 }
1581
f6b3007c
JH		 1582 my_exit(0);
1583 /* NOTREACHED */
312caa8e 1584 return NULL;
6224f72b
GS		 1585}
1586
954c1994 1587/*
ccfc67b7
JH		 1588=head1 SV Manipulation Functions
1589
954c1994
GS		 1590=for apidoc p||get_sv
1591
1592Returns the SV of the specified Perl scalar. If C<create> is set and the
1593Perl variable does not exist then it will be created. If C<create> is not
1594set and the variable does not exist then NULL is returned.
1595
1596=cut
1597*/
1598
6224f72b 1599SV*
864dbfa3 1600Perl_get_sv(pTHX_ const char *name, I32 create)
6224f72b
GS		 1601{
1602 GV *gv;
4d1ff10f 1603#ifdef USE_5005THREADS
6224f72b
GS		 1604 if (name[1] == '\0' && !isALPHA(name[0])) {
1605 PADOFFSET tmp = find_threadsv(name);
411caa50 1606 if (tmp != NOT_IN_PAD)
6224f72b 1607 return THREADSV(tmp);
6224f72b 1608 }
4d1ff10f 1609#endif /* USE_5005THREADS */
6224f72b
GS		 1610 gv = gv_fetchpv(name, create, SVt_PV);
1611 if (gv)
1612 return GvSV(gv);
1613 return Nullsv;
1614}
1615
954c1994 1616/*
ccfc67b7
JH		 1617=head1 Array Manipulation Functions
1618
954c1994
GS		 1619=for apidoc p||get_av
1620
1621Returns the AV of the specified Perl array. If C<create> is set and the
1622Perl variable does not exist then it will be created. If C<create> is not
1623set and the variable does not exist then NULL is returned.
1624
1625=cut
1626*/
1627
6224f72b 1628AV*
864dbfa3 1629Perl_get_av(pTHX_ const char *name, I32 create)
6224f72b
GS		 1630{
1631 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1632 if (create)
1633 return GvAVn(gv);
1634 if (gv)
1635 return GvAV(gv);
1636 return Nullav;
1637}
1638
954c1994 1639/*
ccfc67b7
JH		 1640=head1 Hash Manipulation Functions
1641
954c1994
GS		 1642=for apidoc p||get_hv
1643
1644Returns the HV of the specified Perl hash. If C<create> is set and the
1645Perl variable does not exist then it will be created. If C<create> is not
1646set and the variable does not exist then NULL is returned.
1647
1648=cut
1649*/
1650
6224f72b 1651HV*
864dbfa3 1652Perl_get_hv(pTHX_ const char *name, I32 create)
6224f72b 1653{
a0d0e21e
LW		 1654 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1655 if (create)
1656 return GvHVn(gv);
1657 if (gv)
1658 return GvHV(gv);
1659 return Nullhv;
1660}
1661
954c1994 1662/*
ccfc67b7
JH		 1663=head1 CV Manipulation Functions
1664
954c1994
GS		 1665=for apidoc p||get_cv
1666
1667Returns the CV of the specified Perl subroutine. If C<create> is set and
1668the Perl subroutine does not exist then it will be declared (which has the
1669same effect as saying C<sub name;>). If C<create> is not set and the
1670subroutine does not exist then NULL is returned.
1671
1672=cut
1673*/
1674
a0d0e21e 1675CV*
864dbfa3 1676Perl_get_cv(pTHX_ const char *name, I32 create)
a0d0e21e
LW		 1677{
1678 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
b099ddc0 1679 /* XXX unsafe for threads if eval_owner isn't held */
f6ec51f7
GS		 1680 /* XXX this is probably not what they think they're getting.
1681 * It has the same effect as "sub name;", i.e. just a forward
1682 * declaration! */
8ebc5c01 1683 if (create && !GvCVu(gv))
774d564b 1684 return newSUB(start_subparse(FALSE, 0),
a0d0e21e 1685 newSVOP(OP_CONST, 0, newSVpv(name,0)),
4633a7c4 1686 Nullop,
a0d0e21e
LW		 1687 Nullop);
1688 if (gv)
8ebc5c01 1689 return GvCVu(gv);
a0d0e21e
LW		 1690 return Nullcv;
1691}
1692
79072805
LW		 1693/* Be sure to refetch the stack pointer after calling these routines. */
1694
954c1994 1695/*
ccfc67b7
JH		 1696
1697=head1 Callback Functions
1698
954c1994
GS		 1699=for apidoc p||call_argv
1700
1701Performs a callback to the specified Perl sub. See L<perlcall>.
1702
1703=cut
1704*/
1705
a0d0e21e 1706I32
864dbfa3 1707Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 1708
8ac85365
NIS		 1709 /* See G_* flags in cop.h */
1710 /* null terminated arg list */
8990e307 1711{
a0d0e21e 1712 dSP;
8990e307 1713
924508f0 1714 PUSHMARK(SP);
a0d0e21e 1715 if (argv) {
8990e307 1716 while (*argv) {
a0d0e21e 1717 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
8990e307
LW		 1718 argv++;
1719 }
a0d0e21e 1720 PUTBACK;
8990e307 1721 }
864dbfa3 1722 return call_pv(sub_name, flags);
8990e307
LW		 1723}
1724
954c1994
GS		 1725/*
1726=for apidoc p||call_pv
1727
1728Performs a callback to the specified Perl sub. See L<perlcall>.
1729
1730=cut
1731*/
1732
a0d0e21e 1733I32
864dbfa3 1734Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS		 1735 /* name of the subroutine */
1736 /* See G_* flags in cop.h */
a0d0e21e 1737{
864dbfa3 1738 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
a0d0e21e
LW		 1739}
1740
954c1994
GS		 1741/*
1742=for apidoc p||call_method
1743
1744Performs a callback to the specified Perl method. The blessed object must
1745be on the stack. See L<perlcall>.
1746
1747=cut
1748*/
1749
a0d0e21e 1750I32
864dbfa3 1751Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS		 1752 /* name of the subroutine */
1753 /* See G_* flags in cop.h */
a0d0e21e 1754{
968b3946 1755 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
a0d0e21e
LW		 1756}
1757
1758/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS		 1759/*
1760=for apidoc p||call_sv
1761
1762Performs a callback to the Perl sub whose name is in the SV. See
1763L<perlcall>.
1764
1765=cut
1766*/
1767
a0d0e21e 1768I32
864dbfa3 1769Perl_call_sv(pTHX_ SV *sv, I32 flags)
8ac85365 1770 /* See G_* flags in cop.h */
a0d0e21e 1771{
924508f0 1772 dSP;
a0d0e21e 1773 LOGOP myop; /* fake syntax tree node */
968b3946 1774 UNOP method_op;
aa689395 1775 I32 oldmark;
13689cfe 1776 volatile I32 retval = 0;
a0d0e21e 1777 I32 oldscope;
54310121 1778 bool oldcatch = CATCH_GET;
6224f72b 1779 int ret;
533c011a 1780 OP* oldop = PL_op;
db36c5a1 1781 dJMPENV;
1e422769 1782
a0d0e21e
LW		 1783 if (flags & G_DISCARD) {
1784 ENTER;
1785 SAVETMPS;
1786 }
1787
aa689395 1788 Zero(&myop, 1, LOGOP);
54310121 1789 myop.op_next = Nullop;
f51d4af5 1790 if (!(flags & G_NOARGS))
aa689395 1791 myop.op_flags |= OPf_STACKED;
54310121 1792 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1793 (flags & G_ARRAY) ? OPf_WANT_LIST :
1794 OPf_WANT_SCALAR);
462e5cf6 1795 SAVEOP();
533c011a 1796 PL_op = (OP*)&myop;
aa689395 1797
3280af22
NIS		 1798 EXTEND(PL_stack_sp, 1);
1799 *++PL_stack_sp = sv;
aa689395 1800 oldmark = TOPMARK;
3280af22 1801 oldscope = PL_scopestack_ix;
a0d0e21e 1802
3280af22 1803 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 1804 /* Handle first BEGIN of -d. */
3280af22 1805 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24 1806 /* Try harder, since this may have been a sighandler, thus
1807 * curstash may be meaningless. */
3280af22 1808 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
491527d0 1809 && !(flags & G_NODEBUG))
533c011a 1810 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 1811
968b3946
GS		 1812 if (flags & G_METHOD) {
1813 Zero(&method_op, 1, UNOP);
1814 method_op.op_next = PL_op;
1815 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1816 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
f39d0b86 1817 PL_op = (OP*)&method_op;
968b3946
GS		 1818 }
1819
312caa8e 1820 if (!(flags & G_EVAL)) {
0cdb2077 1821 CATCH_SET(TRUE);
14dd3ad8 1822 call_body((OP*)&myop, FALSE);
312caa8e 1823 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 1824 CATCH_SET(oldcatch);
312caa8e
CS		 1825 }
1826 else {
d78bda3d 1827 myop.op_other = (OP*)&myop;
3280af22 1828 PL_markstack_ptr--;
4633a7c4
LW		 1829 /* we're trying to emulate pp_entertry() here */
1830 {
c09156bb 1831 register PERL_CONTEXT *cx;
54310121 1832 I32 gimme = GIMME_V;
ac27b0f5 1833
4633a7c4
LW		 1834 ENTER;
1835 SAVETMPS;
ac27b0f5 1836
968b3946 1837 push_return(Nullop);
1d76a5c3 1838 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
4633a7c4 1839 PUSHEVAL(cx, 0, 0);
533c011a 1840 PL_eval_root = PL_op; /* Only needed so that goto works right. */
ac27b0f5 1841
faef0170 1842 PL_in_eval = EVAL_INEVAL;
4633a7c4 1843 if (flags & G_KEEPERR)
faef0170 1844 PL_in_eval |= EVAL_KEEPERR;
4633a7c4 1845 else
38a03e6e 1846 sv_setpv(ERRSV,"");
4633a7c4 1847 }
3280af22 1848 PL_markstack_ptr++;
a0d0e21e 1849
14dd3ad8
GS		 1850#ifdef PERL_FLEXIBLE_EXCEPTIONS
1851 redo_body:
1852 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
db36c5a1 1853 (OP*)&myop, FALSE);
14dd3ad8
GS		 1854#else
1855 JMPENV_PUSH(ret);
1856#endif
6224f72b
GS		 1857 switch (ret) {
1858 case 0:
14dd3ad8
GS		 1859#ifndef PERL_FLEXIBLE_EXCEPTIONS
1860 redo_body:
1861 call_body((OP*)&myop, FALSE);
1862#endif
312caa8e
CS		 1863 retval = PL_stack_sp - (PL_stack_base + oldmark);
1864 if (!(flags & G_KEEPERR))
1865 sv_setpv(ERRSV,"");
a0d0e21e 1866 break;
6224f72b 1867 case 1:
f86702cc 1868 STATUS_ALL_FAILURE;
a0d0e21e 1869 /* FALL THROUGH */
6224f72b 1870 case 2:
a0d0e21e 1871 /* my_exit() was called */
3280af22 1872 PL_curstash = PL_defstash;
a0d0e21e 1873 FREETMPS;
14dd3ad8 1874 JMPENV_POP;
cc3604b1 1875 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 1876 Perl_croak(aTHX_ "Callback called exit");
f86702cc 1877 my_exit_jump();
a0d0e21e 1878 /* NOTREACHED */
6224f72b 1879 case 3:
3280af22 1880 if (PL_restartop) {
533c011a 1881 PL_op = PL_restartop;
3280af22 1882 PL_restartop = 0;
312caa8e 1883 goto redo_body;
a0d0e21e 1884 }
3280af22 1885 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW		 1886 if (flags & G_ARRAY)
1887 retval = 0;
1888 else {
1889 retval = 1;
3280af22 1890 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 1891 }
312caa8e 1892 break;
a0d0e21e 1893 }
a0d0e21e 1894
3280af22 1895 if (PL_scopestack_ix > oldscope) {
a0a2876f
LW		 1896 SV **newsp;
1897 PMOP *newpm;
1898 I32 gimme;
c09156bb 1899 register PERL_CONTEXT *cx;
a0a2876f
LW		 1900 I32 optype;
1901
1902 POPBLOCK(cx,newpm);
1903 POPEVAL(cx);
1904 pop_return();
3280af22 1905 PL_curpm = newpm;
a0a2876f 1906 LEAVE;
a0d0e21e 1907 }
14dd3ad8 1908 JMPENV_POP;
a0d0e21e 1909 }
1e422769 1910
a0d0e21e 1911 if (flags & G_DISCARD) {
3280af22 1912 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW		 1913 retval = 0;
1914 FREETMPS;
1915 LEAVE;
1916 }
533c011a 1917 PL_op = oldop;
a0d0e21e
LW		 1918 return retval;
1919}
1920
14dd3ad8 1921#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1922STATIC void *
14dd3ad8 1923S_vcall_body(pTHX_ va_list args)
312caa8e
CS		 1924{
1925 OP *myop = va_arg(args, OP*);
1926 int is_eval = va_arg(args, int);
1927
14dd3ad8 1928 call_body(myop, is_eval);
312caa8e
CS		 1929 return NULL;
1930}
14dd3ad8 1931#endif
312caa8e
CS		 1932
1933STATIC void
14dd3ad8 1934S_call_body(pTHX_ OP *myop, int is_eval)
312caa8e 1935{
312caa8e
CS		 1936 if (PL_op == myop) {
1937 if (is_eval)
f807eda9 1938 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
312caa8e 1939 else
f807eda9 1940 PL_op = Perl_pp_entersub(aTHX); /* this does */
312caa8e
CS		 1941 }
1942 if (PL_op)
cea2e8a9 1943 CALLRUNOPS(aTHX);
312caa8e
CS		 1944}
1945
6e72f9df 1946/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 1947
954c1994
GS		 1948/*
1949=for apidoc p||eval_sv
1950
1951Tells Perl to C<eval> the string in the SV.
1952
1953=cut
1954*/
1955
a0d0e21e 1956I32
864dbfa3 1957Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 1958
8ac85365 1959 /* See G_* flags in cop.h */
a0d0e21e 1960{
924508f0 1961 dSP;
a0d0e21e 1962 UNOP myop; /* fake syntax tree node */
8fa7f367 1963 volatile I32 oldmark = SP - PL_stack_base;
13689cfe 1964 volatile I32 retval = 0;
4633a7c4 1965 I32 oldscope;
6224f72b 1966 int ret;
533c011a 1967 OP* oldop = PL_op;
db36c5a1 1968 dJMPENV;
84902520 1969
4633a7c4
LW		 1970 if (flags & G_DISCARD) {
1971 ENTER;
1972 SAVETMPS;
1973 }
1974
462e5cf6 1975 SAVEOP();
533c011a
NIS		 1976 PL_op = (OP*)&myop;
1977 Zero(PL_op, 1, UNOP);
3280af22
NIS		 1978 EXTEND(PL_stack_sp, 1);
1979 *++PL_stack_sp = sv;
1980 oldscope = PL_scopestack_ix;
79072805 1981
4633a7c4
LW		 1982 if (!(flags & G_NOARGS))
1983 myop.op_flags = OPf_STACKED;
79072805 1984 myop.op_next = Nullop;
6e72f9df 1985 myop.op_type = OP_ENTEREVAL;
54310121 1986 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1987 (flags & G_ARRAY) ? OPf_WANT_LIST :
1988 OPf_WANT_SCALAR);
6e72f9df 1989 if (flags & G_KEEPERR)
1990 myop.op_flags |= OPf_SPECIAL;
4633a7c4 1991
14dd3ad8 1992#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1993 redo_body:
14dd3ad8 1994 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
db36c5a1 1995 (OP*)&myop, TRUE);
14dd3ad8
GS		 1996#else
1997 JMPENV_PUSH(ret);
1998#endif
6224f72b
GS		 1999 switch (ret) {
2000 case 0:
14dd3ad8
GS		 2001#ifndef PERL_FLEXIBLE_EXCEPTIONS
2002 redo_body:
2003 call_body((OP*)&myop,TRUE);
2004#endif
312caa8e
CS		 2005 retval = PL_stack_sp - (PL_stack_base + oldmark);
2006 if (!(flags & G_KEEPERR))
2007 sv_setpv(ERRSV,"");
4633a7c4 2008 break;
6224f72b 2009 case 1:
f86702cc 2010 STATUS_ALL_FAILURE;
4633a7c4 2011 /* FALL THROUGH */
6224f72b 2012 case 2:
4633a7c4 2013 /* my_exit() was called */
3280af22 2014 PL_curstash = PL_defstash;
4633a7c4 2015 FREETMPS;
14dd3ad8 2016 JMPENV_POP;
cc3604b1 2017 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2018 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2019 my_exit_jump();
4633a7c4 2020 /* NOTREACHED */
6224f72b 2021 case 3:
3280af22 2022 if (PL_restartop) {
533c011a 2023 PL_op = PL_restartop;
3280af22 2024 PL_restartop = 0;
312caa8e 2025 goto redo_body;
4633a7c4 2026 }
3280af22 2027 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW		 2028 if (flags & G_ARRAY)
2029 retval = 0;
2030 else {
2031 retval = 1;
3280af22 2032 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2033 }
312caa8e 2034 break;
4633a7c4
LW		 2035 }
2036
14dd3ad8 2037 JMPENV_POP;
4633a7c4 2038 if (flags & G_DISCARD) {
3280af22 2039 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW		 2040 retval = 0;
2041 FREETMPS;
2042 LEAVE;
2043 }
533c011a 2044 PL_op = oldop;
4633a7c4
LW		 2045 return retval;
2046}
2047
954c1994
GS		 2048/*
2049=for apidoc p||eval_pv
2050
2051Tells Perl to C<eval> the given string and return an SV* result.
2052
2053=cut
2054*/
2055
137443ea 2056SV*
864dbfa3 2057Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2058{
2059 dSP;
2060 SV* sv = newSVpv(p, 0);
2061
864dbfa3 2062 eval_sv(sv, G_SCALAR);
137443ea 2063 SvREFCNT_dec(sv);
2064
2065 SPAGAIN;
2066 sv = POPs;
2067 PUTBACK;
2068
2d8e6c8d
GS		 2069 if (croak_on_error && SvTRUE(ERRSV)) {
2070 STRLEN n_a;
cea2e8a9 2071 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
2d8e6c8d 2072 }
137443ea 2073
2074 return sv;
2075}
2076
4633a7c4
LW		 2077/* Require a module. */
2078
954c1994 2079/*
ccfc67b7
JH		 2080=head1 Embedding Functions
2081
954c1994
GS		 2082=for apidoc p||require_pv
2083
7d3fb230
BS		 2084Tells Perl to C<require> the file named by the string argument. It is
2085analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2086implemented that way; consider using load_module instead.
954c1994 2087
7d3fb230 2088=cut */
954c1994 2089
4633a7c4 2090void
864dbfa3 2091Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2092{
d3acc0f7
JP		 2093 SV* sv;
2094 dSP;
e788e7d3 2095 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7
JP		 2096 PUTBACK;
2097 sv = sv_newmortal();
4633a7c4
LW		 2098 sv_setpv(sv, "require '");
2099 sv_catpv(sv, pv);
2100 sv_catpv(sv, "'");
864dbfa3 2101 eval_sv(sv, G_DISCARD);
d3acc0f7
JP		 2102 SPAGAIN;
2103 POPSTACK;
79072805
LW		 2104}
2105
79072805 2106void
864dbfa3 2107Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
79072805
LW		 2108{
2109 register GV *gv;
2110
155aba94 2111 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
14befaf4 2112 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
79072805
LW		 2113}
2114
76e3520e 2115STATIC void
cea2e8a9 2116S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
4633a7c4 2117{
ab821d7f 2118 /* This message really ought to be max 23 lines.
75c72d73 2119 * Removed -h because the user already knows that option. Others? */
fb73857a 2120
76e3520e 2121 static char *usage_msg[] = {
fb73857a 2122"-0[octal] specify record separator (\\0, if no argument)",
2123"-a autosplit mode with -n or -p (splits $_ into @F)",
46487f74 2124"-C enable native wide character system interfaces",
1950ee41 2125"-c check syntax only (runs BEGIN and CHECK blocks)",
aac3bd0d
GS		 2126"-d[:debugger] run program under debugger",
2127"-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2128"-e 'command' one line of program (several -e's allowed, omit programfile)",
2129"-F/pattern/ split() pattern for -a switch (//'s are optional)",
2130"-i[extension] edit <> files in place (makes backup if extension supplied)",
2131"-Idirectory specify @INC/#include directory (several -I's allowed)",
fb73857a 2132"-l[octal] enable line ending processing, specifies line terminator",
aac3bd0d
GS		 2133"-[mM][-]module execute `use/no module...' before executing program",
2134"-n assume 'while (<>) { ... }' loop around program",
2135"-p assume loop like -n but print line also, like sed",
2136"-P run program through C preprocessor before compilation",
2137"-s enable rudimentary parsing for switches after programfile",
2138"-S look for programfile using PATH environment variable",
2139"-T enable tainting checks",
9cbc33e8 2140"-t enable tainting warnings",
aac3bd0d 2141"-u dump core after parsing program",
fb73857a 2142"-U allow unsafe operations",
aac3bd0d
GS		 2143"-v print version, subversion (includes VERY IMPORTANT perl info)",
2144"-V[:variable] print configuration summary (or a single Config.pm variable)",
2145"-w enable many useful warnings (RECOMMENDED)",
3c0facb2
GS		 2146"-W enable all warnings",
2147"-X disable all warnings",
fb73857a 2148"-x[directory] strip off text before #!perl line and perhaps cd to directory",
2149"\n",
2150NULL
2151};
76e3520e 2152 char **p = usage_msg;
fb73857a 2153
b0e47665
GS		 2154 PerlIO_printf(PerlIO_stdout(),
2155 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2156 name);
fb73857a 2157 while (*p)
b0e47665 2158 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
4633a7c4
LW		 2159}
2160
79072805
LW		 2161/* This routine handles any switches that can be given during run */
2162
2163char *
864dbfa3 2164Perl_moreswitches(pTHX_ char *s)
79072805 2165{
ba210ebe 2166 STRLEN numlen;
c07a80fd 2167 U32 rschar;
79072805
LW		 2168
2169 switch (*s) {
2170 case '0':
a863c7d1 2171 {
53305cf1
NC		 2172 I32 flags = 0;
2173 numlen = 4;
2174 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
8bfdd7d9 2175 SvREFCNT_dec(PL_rs);
c07a80fd 2176 if (rschar & ~((U8)~0))
8bfdd7d9 2177 PL_rs = &PL_sv_undef;
c07a80fd 2178 else if (!rschar && numlen >= 2)
8bfdd7d9 2179 PL_rs = newSVpvn("", 0);
c07a80fd 2180 else {
eb160463 2181 char ch = (char)rschar;
8bfdd7d9 2182 PL_rs = newSVpvn(&ch, 1);
79072805
LW		 2183 }
2184 return s + numlen;
a863c7d1 2185 }
46487f74 2186 case 'C':
a05d7ebb
JH		 2187 s++;
2188 PL_unicode = parse_unicode_opts(&s);
46487f74 2189 return s;
2304df62 2190 case 'F':
3280af22 2191 PL_minus_F = TRUE;
ebce5377
RGS		 2192 PL_splitstr = ++s;
2193 while (*s && !isSPACE(*s)) ++s;
2194 *s = '\0';
2195 PL_splitstr = savepv(PL_splitstr);
2304df62 2196 return s;
79072805 2197 case 'a':
3280af22 2198 PL_minus_a = TRUE;
79072805
LW		 2199 s++;
2200 return s;
2201 case 'c':
3280af22 2202 PL_minus_c = TRUE;
79072805
LW		 2203 s++;
2204 return s;
2205 case 'd':
bbce6d69 2206 forbid_setid("-d");
4633a7c4 2207 s++;
70c94a19
RR		 2208 /* The following permits -d:Mod to accepts arguments following an =
2209 in the fashion that -MSome::Mod does. */
2210 if (*s == ':' || *s == '=') {
2211 char *start;
2212 SV *sv;
2213 sv = newSVpv("use Devel::", 0);
2214 start = ++s;
2215 /* We now allow -d:Module=Foo,Bar */
2216 while(isALNUM(*s) || *s==':') ++s;
2217 if (*s != '=')
2218 sv_catpv(sv, start);
2219 else {
2220 sv_catpvn(sv, start, s-start);
2221 sv_catpv(sv, " split(/,/,q{");
2222 sv_catpv(sv, ++s);
2223 sv_catpv(sv, "})");
2224 }
4633a7c4 2225 s += strlen(s);
70c94a19 2226 my_setenv("PERL5DB", SvPV(sv, PL_na));
4633a7c4 2227 }
ed094faf 2228 if (!PL_perldb) {
3280af22 2229 PL_perldb = PERLDB_ALL;
a0d0e21e 2230 init_debugger();
ed094faf 2231 }
79072805
LW		 2232 return s;
2233 case 'D':
0453d815 2234 {
79072805 2235#ifdef DEBUGGING
bbce6d69 2236 forbid_setid("-D");
79072805 2237 if (isALPHA(s[1])) {
04932ac8 2238 /* if adding extra options, remember to update DEBUG_MASK */
7bab3ede 2239 static char debopts[] = "psltocPmfrxu HXDSTRJvC";
79072805
LW		 2240 char *d;
2241
93a17b20 2242 for (s++; *s && (d = strchr(debopts,*s)); s++)
3280af22 2243 PL_debug |= 1 << (d - debopts);
79072805
LW		 2244 }
2245 else {
3280af22 2246 PL_debug = atoi(s+1);
79072805
LW		 2247 for (s++; isDIGIT(*s); s++) ;
2248 }
2ac72d6e 2249#ifdef EBCDIC
12a43e32
JH		 2250 if (DEBUG_p_TEST_ && ckWARN_d(WARN_DEBUGGING))
2251 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2252 "-Dp not implemented on this platform\n");
2253#endif
aea4f609 2254 PL_debug |= DEBUG_TOP_FLAG;
12a43e32 2255#else /* !DEBUGGING */
0453d815 2256 if (ckWARN_d(WARN_DEBUGGING))
9014280d 2257 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
0453d815 2258 "Recompile perl with -DDEBUGGING to use -D switch\n");
a0d0e21e 2259 for (s++; isALNUM(*s); s++) ;
79072805
LW		 2260#endif
2261 /*SUPPRESS 530*/
2262 return s;
0453d815 2263 }
4633a7c4 2264 case 'h':
ac27b0f5 2265 usage(PL_origargv[0]);
7ca617d0 2266 my_exit(0);
79072805 2267 case 'i':
3280af22
NIS		 2268 if (PL_inplace)
2269 Safefree(PL_inplace);
c030f24b
GH		 2270#if defined(__CYGWIN__) /* do backup extension automagically */
2271 if (*(s+1) == '\0') {
2272 PL_inplace = savepv(".bak");
2273 return s+1;
2274 }
2275#endif /* __CYGWIN__ */
3280af22 2276 PL_inplace = savepv(s+1);
79072805 2277 /*SUPPRESS 530*/
3280af22 2278 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
7b8d334a 2279 if (*s) {
fb73857a 2280 *s++ = '\0';
7b8d334a
GS		 2281 if (*s == '-') /* Additional switches on #! line. */
2282 s++;
2283 }
fb73857a 2284 return s;
4e49a025 2285 case 'I': /* -I handled both here and in parse_body() */
bbce6d69 2286 forbid_setid("-I");
fb73857a 2287 ++s;
2288 while (*s && isSPACE(*s))
2289 ++s;
2290 if (*s) {
774d564b 2291 char *e, *p;
0df16ed7
GS		 2292 p = s;
2293 /* ignore trailing spaces (possibly followed by other switches) */
2294 do {
2295 for (e = p; *e && !isSPACE(*e); e++) ;
2296 p = e;
2297 while (isSPACE(*p))
2298 p++;
2299 } while (*p && *p != '-');
2300 e = savepvn(s, e-s);
574c798a 2301 incpush(e, TRUE, TRUE, FALSE);
0df16ed7
GS		 2302 Safefree(e);
2303 s = p;
2304 if (*s == '-')
2305 s++;
79072805
LW		 2306 }
2307 else
a67e862a 2308 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 2309 return s;
79072805 2310 case 'l':
3280af22 2311 PL_minus_l = TRUE;
79072805 2312 s++;
7889fe52
NIS		 2313 if (PL_ors_sv) {
2314 SvREFCNT_dec(PL_ors_sv);
2315 PL_ors_sv = Nullsv;
2316 }
79072805 2317 if (isDIGIT(*s)) {
53305cf1 2318 I32 flags = 0;
7889fe52 2319 PL_ors_sv = newSVpvn("\n",1);
53305cf1
NC		 2320 numlen = 3 + (*s == '0');
2321 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW		 2322 s += numlen;
2323 }
2324 else {
8bfdd7d9 2325 if (RsPARA(PL_rs)) {
7889fe52
NIS		 2326 PL_ors_sv = newSVpvn("\n\n",2);
2327 }
2328 else {
8bfdd7d9 2329 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 2330 }
79072805
LW		 2331 }
2332 return s;
06492da6
SF		 2333 case 'A':
2334 forbid_setid("-A");
930366bd
RGS		 2335 if (!PL_preambleav)
2336 PL_preambleav = newAV();
06492da6 2337 if (*++s) {
930366bd 2338 SV *sv = newSVpvn("use assertions::activate split(/,/,q{",37);
06492da6
SF		 2339 sv_catpv(sv,s);
2340 sv_catpv(sv,"})");
2341 s+=strlen(s);
06492da6
SF		 2342 av_push(PL_preambleav, sv);
2343 }
2344 else
930366bd 2345 av_push(PL_preambleav, newSVpvn("use assertions::activate",24));
06492da6 2346 return s;
1a30305b 2347 case 'M':
bbce6d69 2348 forbid_setid("-M"); /* XXX ? */
1a30305b 2349 /* FALL THROUGH */
2350 case 'm':
bbce6d69 2351 forbid_setid("-m"); /* XXX ? */
1a30305b 2352 if (*++s) {
a5f75d66 2353 char *start;
11343788 2354 SV *sv;
a5f75d66
AD		 2355 char *use = "use ";
2356 /* -M-foo == 'no foo' */
2357 if (*s == '-') { use = "no "; ++s; }
11343788 2358 sv = newSVpv(use,0);
a5f75d66 2359 start = s;
1a30305b 2360 /* We allow -M'Module qw(Foo Bar)' */
c07a80fd 2361 while(isALNUM(*s) || *s==':') ++s;
2362 if (*s != '=') {
11343788 2363 sv_catpv(sv, start);
c07a80fd 2364 if (*(start-1) == 'm') {
2365 if (*s != '\0')
cea2e8a9 2366 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
11343788 2367 sv_catpv( sv, " ()");
c07a80fd 2368 }
2369 } else {
6df41af2 2370 if (s == start)
be98fb35
GS		 2371 Perl_croak(aTHX_ "Module name required with -%c option",
2372 s[-1]);
11343788
MB		 2373 sv_catpvn(sv, start, s-start);
2374 sv_catpv(sv, " split(/,/,q{");
2375 sv_catpv(sv, ++s);
2376 sv_catpv(sv, "})");
c07a80fd 2377 }
1a30305b 2378 s += strlen(s);
5c831c24 2379 if (!PL_preambleav)
3280af22
NIS		 2380 PL_preambleav = newAV();
2381 av_push(PL_preambleav, sv);
1a30305b 2382 }
2383 else
cea2e8a9 2384 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
1a30305b 2385 return s;
79072805 2386 case 'n':
3280af22 2387 PL_minus_n = TRUE;
79072805
LW		 2388 s++;
2389 return s;
2390 case 'p':
3280af22 2391 PL_minus_p = TRUE;
79072805
LW		 2392 s++;
2393 return s;
2394 case 's':
bbce6d69 2395 forbid_setid("-s");
3280af22 2396 PL_doswitches = TRUE;
79072805
LW		 2397 s++;
2398 return s;
6537fe72
MS		 2399 case 't':
2400 if (!PL_tainting)
2401 Perl_croak(aTHX_ "Too late for \"-t\" option");
2402 s++;
2403 return s;
463ee0b2 2404 case 'T':
3280af22 2405 if (!PL_tainting)
cea2e8a9 2406 Perl_croak(aTHX_ "Too late for \"-T\" option");
463ee0b2
LW		 2407 s++;
2408 return s;
79072805 2409 case 'u':
bf4acbe4
GS		 2410#ifdef MACOS_TRADITIONAL
2411 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2412#endif
3280af22 2413 PL_do_undump = TRUE;
79072805
LW		 2414 s++;
2415 return s;
2416 case 'U':
3280af22 2417 PL_unsafe = TRUE;
79072805
LW		 2418 s++;
2419 return s;
2420 case 'v':
8e9464f1 2421#if !defined(DGUX)
b0e47665 2422 PerlIO_printf(PerlIO_stdout(),
d2560b70 2423 Perl_form(aTHX_ "\nThis is perl, v%"VDf" built for %s",
b0e47665 2424 PL_patchlevel, ARCHNAME));
8e9464f1
JH		 2425#else /* DGUX */
2426/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
2427 PerlIO_printf(PerlIO_stdout(),
2428 Perl_form(aTHX_ "\nThis is perl, version %vd\n", PL_patchlevel));
2429 PerlIO_printf(PerlIO_stdout(),
2430 Perl_form(aTHX_ " built under %s at %s %s\n",
2431 OSNAME, __DATE__, __TIME__));
2432 PerlIO_printf(PerlIO_stdout(),
2433 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 2434 OSVERS));
8e9464f1
JH		 2435#endif /* !DGUX */
2436
fb73857a 2437#if defined(LOCAL_PATCH_COUNT)
2438 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS		 2439 PerlIO_printf(PerlIO_stdout(),
2440 "\n(with %d registered patch%s, "
2441 "see perl -V for more detail)",
2442 (int)LOCAL_PATCH_COUNT,
2443 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 2444#endif
1a30305b 2445
b0e47665 2446 PerlIO_printf(PerlIO_stdout(),
4c79ee7a 2447 "\n\nCopyright 1987-2003, Larry Wall\n");
eae9c151
JH		 2448#ifdef MACOS_TRADITIONAL
2449 PerlIO_printf(PerlIO_stdout(),
be3c0a43 2450 "\nMac OS port Copyright 1991-2002, Matthias Neeracher;\n"
03765510 2451 "maintained by Chris Nandor\n");
eae9c151 2452#endif
79072805 2453#ifdef MSDOS
b0e47665
GS		 2454 PerlIO_printf(PerlIO_stdout(),
2455 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff 2456#endif
2457#ifdef DJGPP
b0e47665
GS		 2458 PerlIO_printf(PerlIO_stdout(),
2459 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2460 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 2461#endif
79072805 2462#ifdef OS2
b0e47665
GS		 2463 PerlIO_printf(PerlIO_stdout(),
2464 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
be3c0a43 2465 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
79072805 2466#endif
79072805 2467#ifdef atarist
b0e47665
GS		 2468 PerlIO_printf(PerlIO_stdout(),
2469 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 2470#endif
a3f9223b 2471#ifdef __BEOS__
b0e47665
GS		 2472 PerlIO_printf(PerlIO_stdout(),
2473 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 2474#endif
1d84e8df 2475#ifdef MPE
b0e47665 2476 PerlIO_printf(PerlIO_stdout(),
be3c0a43 2477 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2002\n");
1d84e8df 2478#endif
9d116dd7 2479#ifdef OEMVS
b0e47665
GS		 2480 PerlIO_printf(PerlIO_stdout(),
2481 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 2482#endif
495c5fdc 2483#ifdef __VOS__
b0e47665 2484 PerlIO_printf(PerlIO_stdout(),
94efb9fb 2485 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
495c5fdc 2486#endif
092bebab 2487#ifdef __OPEN_VM
b0e47665
GS		 2488 PerlIO_printf(PerlIO_stdout(),
2489 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 2490#endif
a1a0e61e 2491#ifdef POSIX_BC
b0e47665
GS		 2492 PerlIO_printf(PerlIO_stdout(),
2493 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 2494#endif
61ae2fbf 2495#ifdef __MINT__
b0e47665
GS		 2496 PerlIO_printf(PerlIO_stdout(),
2497 "MiNT port by Guido Flohr, 1997-1999\n");
61ae2fbf 2498#endif
f83d2536 2499#ifdef EPOC
b0e47665 2500 PerlIO_printf(PerlIO_stdout(),
be3c0a43 2501 "EPOC port by Olaf Flebbe, 1999-2002\n");
f83d2536 2502#endif
e1caacb4 2503#ifdef UNDER_CE
be3c0a43 2504 printf("WINCE port by Rainer Keuchel, 2001-2002\n");
e1caacb4
JH		 2505 printf("Built on " __DATE__ " " __TIME__ "\n\n");
2506 wce_hitreturn();
2507#endif
baed7233
DL		 2508#ifdef BINARY_BUILD_NOTICE
2509 BINARY_BUILD_NOTICE;
2510#endif
b0e47665
GS		 2511 PerlIO_printf(PerlIO_stdout(),
2512 "\n\
79072805 2513Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 2514GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687
GS		 2515Complete documentation for Perl, including FAQ lists, should be found on\n\
2516this system using `man perl' or `perldoc perl'. If you have access to the\n\
2517Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
7ca617d0 2518 my_exit(0);
79072805 2519 case 'w':
599cee73 2520 if (! (PL_dowarn & G_WARN_ALL_MASK))
ac27b0f5 2521 PL_dowarn |= G_WARN_ON;
599cee73
PM		 2522 s++;
2523 return s;
2524 case 'W':
ac27b0f5 2525 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
317ea90d
MS		 2526 if (!specialWARN(PL_compiling.cop_warnings))
2527 SvREFCNT_dec(PL_compiling.cop_warnings);
d3a7d8c7 2528 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM		 2529 s++;
2530 return s;
2531 case 'X':
ac27b0f5 2532 PL_dowarn = G_WARN_ALL_OFF;
317ea90d
MS		 2533 if (!specialWARN(PL_compiling.cop_warnings))
2534 SvREFCNT_dec(PL_compiling.cop_warnings);
d3a7d8c7 2535 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW		 2536 s++;
2537 return s;
a0d0e21e 2538 case '*':
79072805
LW		 2539 case ' ':
2540 if (s[1] == '-') /* Additional switches on #! line. */
2541 return s+2;
2542 break;
a0d0e21e 2543 case '-':
79072805 2544 case 0:
51882d45 2545#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS		 2546 case '\r':
2547#endif
79072805
LW		 2548 case '\n':
2549 case '\t':
2550 break;
aa689395 2551#ifdef ALTERNATE_SHEBANG
2552 case 'S': /* OS/2 needs -S on "extproc" line. */
2553 break;
2554#endif
a0d0e21e 2555 case 'P':
3280af22 2556 if (PL_preprocess)
a0d0e21e
LW		 2557 return s+1;
2558 /* FALL THROUGH */
79072805 2559 default:
cea2e8a9 2560 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805
LW		 2561 }
2562 return Nullch;
2563}
2564
2565/* compliments of Tom Christiansen */
2566
2567/* unexec() can be found in the Gnu emacs distribution */
ee580363 2568/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW		 2569
2570void
864dbfa3 2571Perl_my_unexec(pTHX)
79072805
LW		 2572{
2573#ifdef UNEXEC
46fc3d4c 2574 SV* prog;
2575 SV* file;
ee580363 2576 int status = 1;
79072805
LW		 2577 extern int etext;
2578
ee580363 2579 prog = newSVpv(BIN_EXP, 0);
46fc3d4c 2580 sv_catpv(prog, "/perl");
6b88bc9c 2581 file = newSVpv(PL_origfilename, 0);
46fc3d4c 2582 sv_catpv(file, ".perldump");
79072805 2583
ee580363
GS		 2584 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2585 /* unexec prints msg to stderr in case of failure */
6ad3d225 2586 PerlProc_exit(status);
79072805 2587#else
a5f75d66
AD		 2588# ifdef VMS
2589# include <lib$routines.h>
2590 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
aa689395 2591# else
79072805 2592 ABORT(); /* for use with undump */
aa689395 2593# endif
a5f75d66 2594#endif
79072805
LW		 2595}
2596
cb68f92d
GS		 2597/* initialize curinterp */
2598STATIC void
cea2e8a9 2599S_init_interp(pTHX)
cb68f92d
GS		 2600{
2601
acfe0abc
GS		 2602#ifdef MULTIPLICITY
2603# define PERLVAR(var,type)
2604# define PERLVARA(var,n,type)
2605# if defined(PERL_IMPLICIT_CONTEXT)
2606# if defined(USE_5005THREADS)
2607# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
c5be433b 2608# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
acfe0abc
GS		 2609# else /* !USE_5005THREADS */
2610# define PERLVARI(var,type,init) aTHX->var = init;
2611# define PERLVARIC(var,type,init) aTHX->var = init;
2612# endif /* USE_5005THREADS */
3967c732 2613# else
acfe0abc
GS		 2614# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2615# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
066ef5b5 2616# endif
acfe0abc
GS		 2617# include "intrpvar.h"
2618# ifndef USE_5005THREADS
2619# include "thrdvar.h"
2620# endif
2621# undef PERLVAR
2622# undef PERLVARA
2623# undef PERLVARI
2624# undef PERLVARIC
2625#else
2626# define PERLVAR(var,type)
2627# define PERLVARA(var,n,type)
2628# define PERLVARI(var,type,init) PL_##var = init;
2629# define PERLVARIC(var,type,init) PL_##var = init;
2630# include "intrpvar.h"
2631# ifndef USE_5005THREADS
2632# include "thrdvar.h"
2633# endif
2634# undef PERLVAR
2635# undef PERLVARA
2636# undef PERLVARI
2637# undef PERLVARIC
cb68f92d
GS		 2638#endif
2639
cb68f92d
GS		 2640}
2641
76e3520e 2642STATIC void
cea2e8a9 2643S_init_main_stash(pTHX)
79072805 2644{
463ee0b2 2645 GV *gv;
6e72f9df 2646
3280af22 2647 PL_curstash = PL_defstash = newHV();
79cb57f6 2648 PL_curstname = newSVpvn("main",4);
adbc6bb1
LW		 2649 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2650 SvREFCNT_dec(GvHV(gv));
3280af22 2651 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
463ee0b2 2652 SvREADONLY_on(gv);
3280af22
NIS		 2653 HvNAME(PL_defstash) = savepv("main");
2654 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2655 GvMULTI_on(PL_incgv);
2656 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2657 GvMULTI_on(PL_hintgv);
2658 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2659 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2660 GvMULTI_on(PL_errgv);
2661 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2662 GvMULTI_on(PL_replgv);
cea2e8a9 2663 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
38a03e6e
MB		 2664 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2665 sv_setpvn(ERRSV, "", 0);
3280af22 2666 PL_curstash = PL_defstash;
11faa288 2667 CopSTASH_set(&PL_compiling, PL_defstash);
ed094faf 2668 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
3280af22 2669 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
4633a7c4 2670 /* We must init $/ before switches are processed. */
864dbfa3 2671 sv_setpvn(get_sv("/", TRUE), "\n", 1);
79072805
LW		 2672}
2673
76e3520e 2674STATIC void
cea2e8a9 2675S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
79072805 2676{
1b24ed4b
MS		 2677 char *quote;
2678 char *code;
2679 char *cpp_discard_flag;
2680 char *perl;
2681
6c4ab083 2682 *fdscript = -1;
79072805 2683
3280af22
NIS		 2684 if (PL_e_script) {
2685 PL_origfilename = savepv("-e");
96436eeb 2686 }
6c4ab083
GS		 2687 else {
2688 /* if find_script() returns, it returns a malloc()-ed value */
3280af22 2689 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
6c4ab083
GS		 2690
2691 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2692 char *s = scriptname + 8;
2693 *fdscript = atoi(s);
2694 while (isDIGIT(*s))
2695 s++;
2696 if (*s) {
2697 scriptname = savepv(s + 1);
3280af22
NIS		 2698 Safefree(PL_origfilename);
2699 PL_origfilename = scriptname;
6c4ab083
GS		 2700 }
2701 }
2702 }
2703
05ec9bb3 2704 CopFILE_free(PL_curcop);
57843af0 2705 CopFILE_set(PL_curcop, PL_origfilename);
3280af22 2706 if (strEQ(PL_origfilename,"-"))
79072805 2707 scriptname = "";
01f988be 2708 if (*fdscript >= 0) {
3280af22 2709 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
1b24ed4b
MS		 2710# if defined(HAS_FCNTL) && defined(F_SETFD)
2711 if (PL_rsfp)
2712 /* ensure close-on-exec */
2713 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1);
2714# endif
96436eeb 2715 }
3280af22 2716 else if (PL_preprocess) {
46fc3d4c 2717 char *cpp_cfg = CPPSTDIN;
79cb57f6 2718 SV *cpp = newSVpvn("",0);
46fc3d4c 2719 SV *cmd = NEWSV(0,0);
2720
2721 if (strEQ(cpp_cfg, "cppstdin"))
cea2e8a9 2722 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
46fc3d4c 2723 sv_catpv(cpp, cpp_cfg);
79072805 2724
1b24ed4b
MS		 2725# ifndef VMS
2726 sv_catpvn(sv, "-I", 2);
2727 sv_catpv(sv,PRIVLIB_EXP);
2728# endif
46fc3d4c 2729
14953ddc
MB		 2730 DEBUG_P(PerlIO_printf(Perl_debug_log,
2731 "PL_preprocess: scriptname=\"%s\", cpp=\"%s\", sv=\"%s\", CPPMINUS=\"%s\"\n",
2732 scriptname, SvPVX (cpp), SvPVX (sv), CPPMINUS));
1b24ed4b
MS		 2733
2734# if defined(MSDOS) || defined(WIN32) || defined(VMS)
2735 quote = "\"";
2736# else
2737 quote = "'";
2738# endif
2739
2740# ifdef VMS
2741 cpp_discard_flag = "";
2742# else
2743 cpp_discard_flag = "-C";
2744# endif
2745
2746# ifdef OS2
2747 perl = os2_execname(aTHX);
2748# else
2749 perl = PL_origargv[0];
2750# endif
2751
2752
2753 /* This strips off Perl comments which might interfere with
62375a60
NIS		 2754 the C pre-processor, including #!. #line directives are
2755 deliberately stripped to avoid confusion with Perl's version
1b24ed4b
MS		 2756 of #line. FWP played some golf with it so it will fit
2757 into VMS's 255 character buffer.
2758 */
2759 if( PL_doextract )
2760 code = "(1../^#!.*perl/i)|/^\\s*#(?!\\s*((ifn?|un)def|(el|end)?if|define|include|else|error|pragma)\\b)/||!($|=1)||print";
2761 else
2762 code = "/^\\s*#(?!\\s*((ifn?|un)def|(el|end)?if|define|include|else|error|pragma)\\b)/||!($|=1)||print";
2763
2764 Perl_sv_setpvf(aTHX_ cmd, "\
2765%s -ne%s%s%s %s | %"SVf" %s %"SVf" %s",
62375a60 2766 perl, quote, code, quote, scriptname, cpp,
1b24ed4b
MS		 2767 cpp_discard_flag, sv, CPPMINUS);
2768
3280af22 2769 PL_doextract = FALSE;
1b24ed4b
MS		 2770# ifdef IAMSUID /* actually, this is caught earlier */
2771 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
2772# ifdef HAS_SETEUID
2773 (void)seteuid(PL_uid); /* musn't stay setuid root */
2774# else
2775# ifdef HAS_SETREUID
2776 (void)setreuid((Uid_t)-1, PL_uid);
2777# else
2778# ifdef HAS_SETRESUID
2779 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
2780# else
2781 PerlProc_setuid(PL_uid);
2782# endif
2783# endif
2784# endif
b28d0864 2785 if (PerlProc_geteuid() != PL_uid)
cea2e8a9 2786 Perl_croak(aTHX_ "Can't do seteuid!\n");
79072805 2787 }
1b24ed4b 2788# endif /* IAMSUID */
0a6c758d 2789
62375a60
NIS		 2790 DEBUG_P(PerlIO_printf(Perl_debug_log,
2791 "PL_preprocess: cmd=\"%s\"\n",
0a6c758d
MS		 2792 SvPVX(cmd)));
2793
3280af22 2794 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
46fc3d4c 2795 SvREFCNT_dec(cmd);
2796 SvREFCNT_dec(cpp);
79072805
LW		 2797 }
2798 else if (!*scriptname) {
bbce6d69 2799 forbid_setid("program input from stdin");
3280af22 2800 PL_rsfp = PerlIO_stdin();
79072805 2801 }
96436eeb 2802 else {
3280af22 2803 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
1b24ed4b
MS		 2804# if defined(HAS_FCNTL) && defined(F_SETFD)
2805 if (PL_rsfp)
2806 /* ensure close-on-exec */
2807 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1);
2808# endif
96436eeb 2809 }
3280af22 2810 if (!PL_rsfp) {
1b24ed4b
MS		 2811# ifdef DOSUID
2812# ifndef IAMSUID /* in case script is not readable before setuid */
2813 if (PL_euid &&
2814 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
2815 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2816 {
2817 /* try again */
62375a60
NIS		 2818 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT,
2819 BIN_EXP, (int)PERL_REVISION,
1b24ed4b
MS		 2820 (int)PERL_VERSION,
2821 (int)PERL_SUBVERSION), PL_origargv);
2822 Perl_croak(aTHX_ "Can't do setuid\n");
2823 }
2824# endif
2825# endif
2826# ifdef IAMSUID
2827 errno = EPERM;
2828 Perl_croak(aTHX_ "Can't open perl script: %s\n",
2829 Strerror(errno));
2830# else
2831 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
2832 CopFILE(PL_curcop), Strerror(errno));
2833# endif
13281fa4 2834 }
79072805 2835}
8d063cd8 2836
7b89560d
JH		 2837/* Mention
2838 * I_SYSSTATVFS HAS_FSTATVFS
2839 * I_SYSMOUNT
c890dc6c 2840 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
7b89560d
JH		 2841 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2842 * here so that metaconfig picks them up. */
2843
104d25b7 2844#ifdef IAMSUID
864dbfa3 2845STATIC int
e688b231 2846S_fd_on_nosuid_fs(pTHX_ int fd)
104d25b7 2847{
0545a864
JH		 2848 int check_okay = 0; /* able to do all the required sys/libcalls */
2849 int on_nosuid = 0; /* the fd is on a nosuid fs */
104d25b7 2850/*
ad27e871 2851 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
e688b231 2852 * fstatvfs() is UNIX98.
0545a864 2853 * fstatfs() is 4.3 BSD.
ad27e871 2854 * ustat()+getmnt() is pre-4.3 BSD.
0545a864
JH		 2855 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2856 * an irrelevant filesystem while trying to reach the right one.
104d25b7
JH		 2857 */
2858
6439433f
JH		 2859#undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2860
2861# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2862 defined(HAS_FSTATVFS)
2863# define FD_ON_NOSUID_CHECK_OKAY
104d25b7 2864 struct statvfs stfs;
6439433f 2865
104d25b7
JH		 2866 check_okay = fstatvfs(fd, &stfs) == 0;
2867 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
6439433f 2868# endif /* fstatvfs */
ac27b0f5 2869
6439433f
JH		 2870# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2871 defined(PERL_MOUNT_NOSUID) && \
2872 defined(HAS_FSTATFS) && \
2873 defined(HAS_STRUCT_STATFS) && \
2874 defined(HAS_STRUCT_STATFS_F_FLAGS)
2875# define FD_ON_NOSUID_CHECK_OKAY
e688b231 2876 struct statfs stfs;
6439433f 2877
104d25b7 2878 check_okay = fstatfs(fd, &stfs) == 0;
104d25b7 2879 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
6439433f
JH		 2880# endif /* fstatfs */
2881
2882# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2883 defined(PERL_MOUNT_NOSUID) && \
2884 defined(HAS_FSTAT) && \
2885 defined(HAS_USTAT) && \
2886 defined(HAS_GETMNT) && \
2887 defined(HAS_STRUCT_FS_DATA) && \
2888 defined(NOSTAT_ONE)
2889# define FD_ON_NOSUID_CHECK_OKAY
c623ac67 2890 Stat_t fdst;
6439433f 2891
0545a864 2892 if (fstat(fd, &fdst) == 0) {
6439433f
JH		 2893 struct ustat us;
2894 if (ustat(fdst.st_dev, &us) == 0) {
2895 struct fs_data fsd;
2896 /* NOSTAT_ONE here because we're not examining fields which
2897 * vary between that case and STAT_ONE. */
ad27e871 2898 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
6439433f
JH		 2899 size_t cmplen = sizeof(us.f_fname);
2900 if (sizeof(fsd.fd_req.path) < cmplen)
2901 cmplen = sizeof(fsd.fd_req.path);
2902 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2903 fdst.st_dev == fsd.fd_req.dev) {
2904 check_okay = 1;
2905 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2906 }
2907 }
2908 }
2909 }
0545a864 2910 }
6439433f
JH		 2911# endif /* fstat+ustat+getmnt */
2912
2913# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2914 defined(HAS_GETMNTENT) && \
2915 defined(HAS_HASMNTOPT) && \
2916 defined(MNTOPT_NOSUID)
2917# define FD_ON_NOSUID_CHECK_OKAY
2918 FILE *mtab = fopen("/etc/mtab", "r");
2919 struct mntent *entry;
c623ac67 2920 Stat_t stb, fsb;
104d25b7
JH		 2921
2922 if (mtab && (fstat(fd, &stb) == 0)) {
6439433f
JH		 2923 while (entry = getmntent(mtab)) {
2924 if (stat(entry->mnt_dir, &fsb) == 0
2925 && fsb.st_dev == stb.st_dev)
2926 {
2927 /* found the filesystem */
2928 check_okay = 1;
2929 if (hasmntopt(entry, MNTOPT_NOSUID))
2930 on_nosuid = 1;
2931 break;
2932 } /* A single fs may well fail its stat(). */
2933 }
104d25b7
JH		 2934 }
2935 if (mtab)
6439433f
JH		 2936 fclose(mtab);
2937# endif /* getmntent+hasmntopt */
0545a864 2938
ac27b0f5 2939 if (!check_okay)
0545a864 2940 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
104d25b7
JH		 2941 return on_nosuid;
2942}
2943#endif /* IAMSUID */
2944
76e3520e 2945STATIC void
cea2e8a9 2946S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
79072805 2947{
155aba94 2948#ifdef IAMSUID
96436eeb 2949 int which;
155aba94 2950#endif
96436eeb 2951
13281fa4
LW		 2952 /* do we need to emulate setuid on scripts? */
2953
2954 /* This code is for those BSD systems that have setuid #! scripts disabled
2955 * in the kernel because of a security problem. Merely defining DOSUID
2956 * in perl will not fix that problem, but if you have disabled setuid
2957 * scripts in the kernel, this will attempt to emulate setuid and setgid
2958 * on scripts that have those now-otherwise-useless bits set. The setuid
27e2fb84
LW		 2959 * root version must be called suidperl or sperlN.NNN. If regular perl
2960 * discovers that it has opened a setuid script, it calls suidperl with
2961 * the same argv that it had. If suidperl finds that the script it has
2962 * just opened is NOT setuid root, it sets the effective uid back to the
2963 * uid. We don't just make perl setuid root because that loses the
2964 * effective uid we had before invoking perl, if it was different from the
2965 * uid.
13281fa4
LW		 2966 *
2967 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2968 * be defined in suidperl only. suidperl must be setuid root. The
2969 * Configure script will set this up for you if you want it.
2970 */
a687059c 2971
13281fa4 2972#ifdef DOSUID
6e72f9df 2973 char *s, *s2;
a0d0e21e 2974
b28d0864 2975 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
cea2e8a9 2976 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
b28d0864 2977 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
79072805 2978 I32 len;
2d8e6c8d 2979 STRLEN n_a;
13281fa4 2980
a687059c 2981#ifdef IAMSUID
fe14fcc3 2982#ifndef HAS_SETREUID
a687059c
LW		 2983 /* On this access check to make sure the directories are readable,
2984 * there is actually a small window that the user could use to make
2985 * filename point to an accessible directory. So there is a faint
2986 * chance that someone could execute a setuid script down in a
2987 * non-accessible directory. I don't know what to do about that.
2988 * But I don't think it's too important. The manual lies when
2989 * it says access() is useful in setuid programs.
2990 */
cc49e20b 2991 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
cea2e8a9 2992 Perl_croak(aTHX_ "Permission denied");
a687059c
LW		 2993#else
2994 /* If we can swap euid and uid, then we can determine access rights
2995 * with a simple stat of the file, and then compare device and
2996 * inode to make sure we did stat() on the same file we opened.
2997 * Then we just have to make sure he or she can execute it.
2998 */
2999 {
c623ac67 3000 Stat_t tmpstatbuf;
a687059c 3001
85e6fe83
LW		 3002 if (
3003#ifdef HAS_SETREUID
b28d0864 3004 setreuid(PL_euid,PL_uid) < 0
a0d0e21e
LW		 3005#else
3006# if HAS_SETRESUID
b28d0864 3007 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
a0d0e21e 3008# endif
85e6fe83 3009#endif
b28d0864 3010 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
cea2e8a9 3011 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
cc49e20b 3012 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
cea2e8a9 3013 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
2bb3463c 3014#if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
e688b231 3015 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
cea2e8a9 3016 Perl_croak(aTHX_ "Permission denied");
104d25b7 3017#endif
b28d0864
NIS		 3018 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
3019 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
3020 (void)PerlIO_close(PL_rsfp);
cea2e8a9 3021 Perl_croak(aTHX_ "Permission denied\n");
a687059c 3022 }
85e6fe83
LW		 3023 if (
3024#ifdef HAS_SETREUID
b28d0864 3025 setreuid(PL_uid,PL_euid) < 0
a0d0e21e
LW		 3026#else
3027# if defined(HAS_SETRESUID)
b28d0864 3028 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
a0d0e21e 3029# endif
85e6fe83 3030#endif
b28d0864 3031 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
cea2e8a9 3032 Perl_croak(aTHX_ "Can't reswap uid and euid");
b28d0864 3033 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
cea2e8a9 3034 Perl_croak(aTHX_ "Permission denied\n");
a687059c 3035 }
fe14fcc3 3036#endif /* HAS_SETREUID */
a687059c
LW		 3037#endif /* IAMSUID */
3038
b28d0864 3039 if (!S_ISREG(PL_statbuf.st_mode))
cea2e8a9 3040 Perl_croak(aTHX_ "Permission denied");
b28d0864 3041 if (PL_statbuf.st_mode & S_IWOTH)
cea2e8a9 3042 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
6b88bc9c 3043 PL_doswitches = FALSE; /* -s is insecure in suid */
57843af0 3044 CopLINE_inc(PL_curcop);
6b88bc9c 3045 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
2d8e6c8d 3046 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
cea2e8a9 3047 Perl_croak(aTHX_ "No #! line");
2d8e6c8d 3048 s = SvPV(PL_linestr,n_a)+2;
663a0e37 3049 if (*s == ' ') s++;
45d8adaa 3050 while (!isSPACE(*s)) s++;
2d8e6c8d 3051 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
6e72f9df 3052 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
3053 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
cea2e8a9 3054 Perl_croak(aTHX_ "Not a perl script");
a687059c 3055 while (*s == ' ' || *s == '\t') s++;
13281fa4
LW		 3056 /*
3057 * #! arg must be what we saw above. They can invoke it by
3058 * mentioning suidperl explicitly, but they may not add any strange
3059 * arguments beyond what #! says if they do invoke suidperl that way.
3060 */
3061 len = strlen(validarg);
3062 if (strEQ(validarg," PHOOEY ") ||
45d8adaa 3063 strnNE(s,validarg,len) || !isSPACE(s[len]))
cea2e8a9 3064 Perl_croak(aTHX_ "Args must match #! line");
a687059c
LW		 3065
3066#ifndef IAMSUID
b28d0864
NIS		 3067 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
3068 PL_euid == PL_statbuf.st_uid)
3069 if (!PL_do_undump)
cea2e8a9 3070 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
a687059c
LW		 3071FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3072#endif /* IAMSUID */
13281fa4 3073
b28d0864
NIS		 3074 if (PL_euid) { /* oops, we're not the setuid root perl */
3075 (void)PerlIO_close(PL_rsfp);
13281fa4 3076#ifndef IAMSUID
46fc3d4c 3077 /* try again */
a7cb1f99 3078 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS		 3079 (int)PERL_REVISION, (int)PERL_VERSION,
3080 (int)PERL_SUBVERSION), PL_origargv);
13281fa4 3081#endif
cea2e8a9 3082 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4
LW		 3083 }
3084
b28d0864 3085 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
fe14fcc3 3086#ifdef HAS_SETEGID
b28d0864 3087 (void)setegid(PL_statbuf.st_gid);
a687059c 3088#else
fe14fcc3 3089#ifdef HAS_SETREGID
b28d0864 3090 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
85e6fe83
LW		 3091#else
3092#ifdef HAS_SETRESGID
b28d0864 3093 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
a687059c 3094#else
b28d0864 3095 PerlProc_setgid(PL_statbuf.st_gid);
a687059c
LW		 3096#endif
3097#endif
85e6fe83 3098#endif
b28d0864 3099 if (PerlProc_getegid() != PL_statbuf.st_gid)
cea2e8a9 3100 Perl_croak(aTHX_ "Can't do setegid!\n");
83025b21 3101 }
b28d0864
NIS		 3102 if (PL_statbuf.st_mode & S_ISUID) {
3103 if (PL_statbuf.st_uid != PL_euid)
fe14fcc3 3104#ifdef HAS_SETEUID
b28d0864 3105 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
a687059c 3106#else
fe14fcc3 3107#ifdef HAS_SETREUID
b28d0864 3108 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
85e6fe83
LW		 3109#else
3110#ifdef HAS_SETRESUID
b28d0864 3111 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
a687059c 3112#else
b28d0864 3113 PerlProc_setuid(PL_statbuf.st_uid);
a687059c
LW		 3114#endif
3115#endif
85e6fe83 3116#endif
b28d0864 3117 if (PerlProc_geteuid() != PL_statbuf.st_uid)
cea2e8a9 3118 Perl_croak(aTHX_ "Can't do seteuid!\n");
a687059c 3119 }
b28d0864 3120 else if (PL_uid) { /* oops, mustn't run as root */
fe14fcc3 3121#ifdef HAS_SETEUID
b28d0864 3122 (void)seteuid((Uid_t)PL_uid);
a687059c 3123#else
fe14fcc3 3124#ifdef HAS_SETREUID
b28d0864 3125 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
a687059c 3126#else
85e6fe83 3127#ifdef HAS_SETRESUID
b28d0864 3128 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
85e6fe83 3129#else
b28d0864 3130 PerlProc_setuid((Uid_t)PL_uid);
85e6fe83 3131#endif
a687059c
LW		 3132#endif
3133#endif
b28d0864 3134 if (PerlProc_geteuid() != PL_uid)
cea2e8a9 3135 Perl_croak(aTHX_ "Can't do seteuid!\n");
83025b21 3136 }
748a9306 3137 init_ids();
b28d0864 3138 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
cea2e8a9 3139 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
13281fa4
LW		 3140 }
3141#ifdef IAMSUID
6b88bc9c 3142 else if (PL_preprocess)
cea2e8a9 3143 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
96436eeb 3144 else if (fdscript >= 0)
cea2e8a9 3145 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
13281fa4 3146 else
cea2e8a9 3147 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
96436eeb 3148
3149 /* We absolutely must clear out any saved ids here, so we */
3150 /* exec the real perl, substituting fd script for scriptname. */
3151 /* (We pass script name as "subdir" of fd, which perl will grok.) */
b28d0864
NIS		 3152 PerlIO_rewind(PL_rsfp);
3153 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
6b88bc9c
GS		 3154 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3155 if (!PL_origargv[which])
cea2e8a9
GS		 3156 Perl_croak(aTHX_ "Permission denied");
3157 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
6b88bc9c 3158 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
96436eeb 3159#if defined(HAS_FCNTL) && defined(F_SETFD)
b28d0864 3160 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
96436eeb 3161#endif
a7cb1f99 3162 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS		 3163 (int)PERL_REVISION, (int)PERL_VERSION,
3164 (int)PERL_SUBVERSION), PL_origargv);/* try again */
cea2e8a9 3165 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4 3166#endif /* IAMSUID */
a687059c 3167#else /* !DOSUID */
3280af22 3168 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
a687059c 3169#ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
b28d0864
NIS		 3170 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3171 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
a687059c 3172 ||
b28d0864 3173 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
a687059c 3174 )
b28d0864 3175 if (!PL_do_undump)
cea2e8a9 3176 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
a687059c
LW		 3177FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3178#endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3179 /* not set-id, must be wrapped */
a687059c 3180 }
13281fa4 3181#endif /* DOSUID */
79072805 3182}
13281fa4 3183
76e3520e 3184STATIC void
cea2e8a9 3185S_find_beginning(pTHX)
79072805 3186{
6e72f9df 3187 register char *s, *s2;
e55ac0fa
HS		 3188#ifdef MACOS_TRADITIONAL
3189 int maclines = 0;
3190#endif
33b78306
LW		 3191
3192 /* skip forward in input to the real script? */
3193
bbce6d69 3194 forbid_setid("-x");
bf4acbe4 3195#ifdef MACOS_TRADITIONAL
084592ab 3196 /* Since the Mac OS does not honor #! arguments for us, we do it ourselves */
ac27b0f5 3197
bf4acbe4
GS		 3198 while (PL_doextract || gMacPerl_AlwaysExtract) {
3199 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3200 if (!gMacPerl_AlwaysExtract)
3201 Perl_croak(aTHX_ "No Perl script found in input\n");
e55ac0fa 3202
bf4acbe4
GS		 3203 if (PL_doextract) /* require explicit override ? */
3204 if (!OverrideExtract(PL_origfilename))
3205 Perl_croak(aTHX_ "User aborted script\n");
3206 else
3207 PL_doextract = FALSE;
e55ac0fa 3208
bf4acbe4
GS		 3209 /* Pater peccavi, file does not have #! */
3210 PerlIO_rewind(PL_rsfp);
e55ac0fa 3211
bf4acbe4
GS		 3212 break;
3213 }
3214#else
3280af22
NIS		 3215 while (PL_doextract) {
3216 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
cea2e8a9 3217 Perl_croak(aTHX_ "No Perl script found in input\n");
bf4acbe4 3218#endif
4f0c37ba
IZ		 3219 s2 = s;
3220 if (*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))) {
3280af22
NIS		 3221 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3222 PL_doextract = FALSE;
6e72f9df 3223 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3224 s2 = s;
3225 while (*s == ' ' || *s == '\t') s++;
3226 if (*s++ == '-') {
3227 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3228 if (strnEQ(s2-4,"perl",4))
3229 /*SUPPRESS 530*/
155aba94
GS		 3230 while ((s = moreswitches(s)))
3231 ;
33b78306 3232 }
95e8664e 3233#ifdef MACOS_TRADITIONAL
e55ac0fa
HS		 3234 /* We are always searching for the #!perl line in MacPerl,
3235 * so if we find it, still keep the line count correct
3236 * by counting lines we already skipped over
3237 */
3238 for (; maclines > 0 ; maclines--)
3239 PerlIO_ungetc(PL_rsfp, '\n');
3240
95e8664e 3241 break;
e55ac0fa
HS		 3242
3243 /* gMacPerl_AlwaysExtract is false in MPW tool */
3244 } else if (gMacPerl_AlwaysExtract) {
3245 ++maclines;
95e8664e 3246#endif
83025b21
LW		 3247 }
3248 }
3249}
3250
afe37c7d 3251
76e3520e 3252STATIC void
cea2e8a9 3253S_init_ids(pTHX)
352d5a3a 3254{
d8eceb89
JH		 3255 PL_uid = PerlProc_getuid();
3256 PL_euid = PerlProc_geteuid();
3257 PL_gid = PerlProc_getgid();
3258 PL_egid = PerlProc_getegid();
748a9306 3259#ifdef VMS
b28d0864
NIS		 3260 PL_uid |= PL_gid << 16;
3261 PL_euid |= PL_egid << 16;
748a9306 3262#endif
3280af22 3263 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
748a9306 3264}
79072805 3265
76e3520e 3266STATIC void
cea2e8a9 3267S_forbid_setid(pTHX_ char *s)
bbce6d69 3268{
3280af22 3269 if (PL_euid != PL_uid)
cea2e8a9 3270 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3280af22 3271 if (PL_egid != PL_gid)
cea2e8a9 3272 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
bbce6d69 3273}
3274
1ee4443e
IZ		 3275void
3276Perl_init_debugger(pTHX)
748a9306 3277{
1ee4443e
IZ		 3278 HV *ostash = PL_curstash;
3279
3280af22
NIS		 3280 PL_curstash = PL_debstash;
3281 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3282 AvREAL_off(PL_dbargs);
3283 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3284 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3285 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
1ee4443e 3286 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3280af22 3287 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3288 sv_setiv(PL_DBsingle, 0);
3280af22 3289 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3290 sv_setiv(PL_DBtrace, 0);
3280af22 3291 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3292 sv_setiv(PL_DBsignal, 0);
06492da6
SF		 3293 PL_DBassertion = GvSV((gv_fetchpv("assertion", GV_ADDMULTI, SVt_PV)));
3294 sv_setiv(PL_DBassertion, 0);
1ee4443e 3295 PL_curstash = ostash;
352d5a3a
LW		 3296}
3297
2ce36478
SM		 3298#ifndef STRESS_REALLOC
3299#define REASONABLE(size) (size)
3300#else
3301#define REASONABLE(size) (1) /* unreasonable */
3302#endif
3303
11343788 3304void
cea2e8a9 3305Perl_init_stacks(pTHX)
79072805 3306{
e336de0d 3307 /* start with 128-item stack and 8K cxstack */
3280af22 3308 PL_curstackinfo = new_stackinfo(REASONABLE(128),
e336de0d 3309 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3280af22
NIS		 3310 PL_curstackinfo->si_type = PERLSI_MAIN;
3311 PL_curstack = PL_curstackinfo->si_stack;
3312 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
79072805 3313
3280af22
NIS		 3314 PL_stack_base = AvARRAY(PL_curstack);
3315 PL_stack_sp = PL_stack_base;
3316 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
8990e307 3317
3280af22
NIS		 3318 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3319 PL_tmps_floor = -1;
3320 PL_tmps_ix = -1;
3321 PL_tmps_max = REASONABLE(128);
8990e307 3322
3280af22
NIS		 3323 New(54,PL_markstack,REASONABLE(32),I32);
3324 PL_markstack_ptr = PL_markstack;
3325 PL_markstack_max = PL_markstack + REASONABLE(32);
79072805 3326
ce2f7c3b 3327 SET_MARK_OFFSET;
e336de0d 3328
3280af22
NIS		 3329 New(54,PL_scopestack,REASONABLE(32),I32);
3330 PL_scopestack_ix = 0;
3331 PL_scopestack_max = REASONABLE(32);
79072805 3332
3280af22
NIS		 3333 New(54,PL_savestack,REASONABLE(128),ANY);
3334 PL_savestack_ix = 0;
3335 PL_savestack_max = REASONABLE(128);
79072805 3336
3280af22
NIS		 3337 New(54,PL_retstack,REASONABLE(16),OP*);
3338 PL_retstack_ix = 0;
3339 PL_retstack_max = REASONABLE(16);
378cc40b 3340}
33b78306 3341
2ce36478
SM		 3342#undef REASONABLE
3343
76e3520e 3344STATIC void
cea2e8a9 3345S_nuke_stacks(pTHX)
6e72f9df 3346{
3280af22
NIS		 3347 while (PL_curstackinfo->si_next)
3348 PL_curstackinfo = PL_curstackinfo->si_next;
3349 while (PL_curstackinfo) {
3350 PERL_SI *p = PL_curstackinfo->si_prev;
bac4b2ad 3351 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3280af22
NIS		 3352 Safefree(PL_curstackinfo->si_cxstack);
3353 Safefree(PL_curstackinfo);
3354 PL_curstackinfo = p;
e336de0d 3355 }
3280af22
NIS		 3356 Safefree(PL_tmps_stack);
3357 Safefree(PL_markstack);
3358 Safefree(PL_scopestack);
3359 Safefree(PL_savestack);
3360 Safefree(PL_retstack);
378cc40b 3361}
33b78306 3362
76e3520e 3363STATIC void
cea2e8a9 3364S_init_lexer(pTHX)
8990e307 3365{
06039172 3366 PerlIO *tmpfp;
3280af22
NIS		 3367 tmpfp = PL_rsfp;
3368 PL_rsfp = Nullfp;
3369 lex_start(PL_linestr);
3370 PL_rsfp = tmpfp;
79cb57f6 3371 PL_subname = newSVpvn("main",4);
8990e307
LW		 3372}
3373
76e3520e 3374STATIC void
cea2e8a9 3375S_init_predump_symbols(pTHX)
45d8adaa 3376{
93a17b20 3377 GV *tmpgv;
af8c498a 3378 IO *io;
79072805 3379
864dbfa3 3380 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3280af22
NIS		 3381 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3382 GvMULTI_on(PL_stdingv);
af8c498a 3383 io = GvIOp(PL_stdingv);
a04651f4 3384 IoTYPE(io) = IoTYPE_RDONLY;
af8c498a 3385 IoIFP(io) = PerlIO_stdin();
adbc6bb1 3386 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
a5f75d66 3387 GvMULTI_on(tmpgv);
af8c498a 3388 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3389
85e6fe83 3390 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
a5f75d66 3391 GvMULTI_on(tmpgv);
af8c498a 3392 io = GvIOp(tmpgv);
a04651f4 3393 IoTYPE(io) = IoTYPE_WRONLY;
af8c498a 3394 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
4633a7c4 3395 setdefout(tmpgv);
adbc6bb1 3396 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
a5f75d66 3397 GvMULTI_on(tmpgv);
af8c498a 3398 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3399
bf49b057
GS		 3400 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3401 GvMULTI_on(PL_stderrgv);
3402 io = GvIOp(PL_stderrgv);
a04651f4 3403 IoTYPE(io) = IoTYPE_WRONLY;
af8c498a 3404 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
adbc6bb1 3405 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
a5f75d66 3406 GvMULTI_on(tmpgv);
af8c498a 3407 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3408
3280af22 3409 PL_statname = NEWSV(66,0); /* last filename we did stat on */
ab821d7f 3410
bf4acbe4
GS		 3411 if (PL_osname)
3412 Safefree(PL_osname);
3413 PL_osname = savepv(OSNAME);
79072805 3414}
33b78306 3415
a11ec5a9
RGS		 3416void
3417Perl_init_argv_symbols(pTHX_ register int argc, register char **argv)
33b78306 3418{
79072805 3419 char *s;
79072805 3420 argc--,argv++; /* skip name of script */
3280af22 3421 if (PL_doswitches) {
79072805
LW		 3422 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3423 if (!argv[0][1])
3424 break;
379d538a 3425 if (argv[0][1] == '-' && !argv[0][2]) {
79072805
LW		 3426 argc--,argv++;
3427 break;
3428 }
155aba94 3429 if ((s = strchr(argv[0], '='))) {
79072805 3430 *s++ = '\0';
85e6fe83 3431 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
79072805
LW		 3432 }
3433 else
85e6fe83 3434 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
fe14fcc3 3435 }
79072805 3436 }
a11ec5a9
RGS		 3437 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3438 GvMULTI_on(PL_argvgv);
3439 (void)gv_AVadd(PL_argvgv);
3440 av_clear(GvAVn(PL_argvgv));
3441 for (; argc > 0; argc--,argv++) {
3442 SV *sv = newSVpv(argv[0],0);
3443 av_push(GvAVn(PL_argvgv),sv);
ce81ff12
JH		 3444 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
3445 if (PL_unicode & PERL_UNICODE_ARGV_FLAG)
3446 SvUTF8_on(sv);
3447 }
a05d7ebb
JH		 3448 if (PL_unicode & PERL_UNICODE_WIDESYSCALLS_FLAG) /* Sarathy? */
3449 (void)sv_utf8_decode(sv);
a11ec5a9
RGS		 3450 }
3451 }
3452}
3453
04fee9b5
NIS		 3454#ifdef HAS_PROCSELFEXE
3455/* This is a function so that we don't hold on to MAXPATHLEN
8338e367 3456 bytes of stack longer than necessary
04fee9b5
NIS		 3457 */
3458STATIC void
3459S_procself_val(pTHX_ SV *sv, char *arg0)
3460{
3461 char buf[MAXPATHLEN];
d13a6521 3462 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
75745e22
TJ		 3463
3464 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
3465 includes a spurious NUL which will cause $^X to fail in system
3466 or backticks (this will prevent extensions from being built and
3467 many tests from working). readlink is not meant to add a NUL.
3468 Normal readlink works fine.
3469 */
3470 if (len > 0 && buf[len-1] == '\0') {
3471 len--;
3472 }
3473
d103ec31
JH		 3474 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
3475 returning the text "unknown" from the readlink rather than the path
78cb7c00 3476 to the executable (or returning an error from the readlink). Any valid
d103ec31
JH		 3477 path has a '/' in it somewhere, so use that to validate the result.
3478 See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
3479 */
78cb7c00 3480 if (len > 0 && memchr(buf, '/', len)) {