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CommitLineData
a0d0e21e
LW		 1/* perl.c
2 *
bc89e66f 3 * Copyright (c) 1987-2001 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
df5cef82 19/* XXX If this causes problems, set i_unistd=undef in the hint file. */
a0d0e21e
LW		 20#ifdef I_UNISTD
21#include <unistd.h>
22#endif
a0d0e21e 23
54310121 24#if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE)
20ce7b12 25char *getenv (char *); /* Usually in <stdlib.h> */
54310121 26#endif
27
acfe0abc 28static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
0cb96387 29
a687059c
LW		 30#ifdef IAMSUID
31#ifndef DOSUID
32#define DOSUID
33#endif
34#endif
378cc40b 35
a687059c
LW		 36#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
37#ifdef DOSUID
38#undef DOSUID
39#endif
40#endif
8d063cd8 41
4d1ff10f 42#if defined(USE_5005THREADS)
06d86050
GS		 43# define INIT_TLS_AND_INTERP \
44 STMT_START { \
45 if (!PL_curinterp) { \
46 PERL_SET_INTERP(my_perl); \
47 INIT_THREADS; \
48 ALLOC_THREAD_KEY; \
49 } \
50 } STMT_END
51#else
52# if defined(USE_ITHREADS)
53# define INIT_TLS_AND_INTERP \
54 STMT_START { \
55 if (!PL_curinterp) { \
56 PERL_SET_INTERP(my_perl); \
57 INIT_THREADS; \
58 ALLOC_THREAD_KEY; \
534825c4
GS		 59 PERL_SET_THX(my_perl); \
60 OP_REFCNT_INIT; \
61 } \
62 else { \
63 PERL_SET_THX(my_perl); \
06d86050 64 } \
06d86050
GS		 65 } STMT_END
66# else
67# define INIT_TLS_AND_INTERP \
68 STMT_START { \
69 if (!PL_curinterp) { \
70 PERL_SET_INTERP(my_perl); \
71 } \
72 PERL_SET_THX(my_perl); \
73 } STMT_END
74# endif
75#endif
76
32e30700
GS		 77#ifdef PERL_IMPLICIT_SYS
78PerlInterpreter *
7766f137
GS		 79perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
80 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
32e30700
GS		 81 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
82 struct IPerlDir* ipD, struct IPerlSock* ipS,
83 struct IPerlProc* ipP)
84{
85 PerlInterpreter *my_perl;
32e30700
GS		 86 /* New() needs interpreter, so call malloc() instead */
87 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
06d86050 88 INIT_TLS_AND_INTERP;
32e30700
GS		 89 Zero(my_perl, 1, PerlInterpreter);
90 PL_Mem = ipM;
7766f137
GS		 91 PL_MemShared = ipMS;
92 PL_MemParse = ipMP;
32e30700
GS		 93 PL_Env = ipE;
94 PL_StdIO = ipStd;
95 PL_LIO = ipLIO;
96 PL_Dir = ipD;
97 PL_Sock = ipS;
98 PL_Proc = ipP;
7766f137 99
32e30700
GS		 100 return my_perl;
101}
102#else
954c1994
GS		 103
104/*
105=for apidoc perl_alloc
106
107Allocates a new Perl interpreter. See L<perlembed>.
108
109=cut
110*/
111
93a17b20 112PerlInterpreter *
cea2e8a9 113perl_alloc(void)
79072805 114{
cea2e8a9 115 PerlInterpreter *my_perl;
79072805 116
54aff467 117 /* New() needs interpreter, so call malloc() instead */
e8ee3774 118 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 119
06d86050 120 INIT_TLS_AND_INTERP;
dedcbb81 121 Zero(my_perl, 1, PerlInterpreter);
cea2e8a9 122 return my_perl;
79072805 123}
32e30700 124#endif /* PERL_IMPLICIT_SYS */
79072805 125
954c1994
GS		 126/*
127=for apidoc perl_construct
128
129Initializes a new Perl interpreter. See L<perlembed>.
130
131=cut
132*/
133
79072805 134void
0cb96387 135perl_construct(pTHXx)
79072805 136{
4d1ff10f 137#ifdef USE_5005THREADS
a863c7d1 138#ifndef FAKE_THREADS
e1f15930 139 struct perl_thread *thr = NULL;
a863c7d1 140#endif /* FAKE_THREADS */
4d1ff10f 141#endif /* USE_5005THREADS */
ba869deb 142
8990e307 143#ifdef MULTIPLICITY
54aff467 144 init_interp();
ac27b0f5 145 PL_perl_destruct_level = 1;
54aff467
GS		 146#else
147 if (PL_perl_destruct_level > 0)
148 init_interp();
149#endif
150
33f46ff6 151 /* Init the real globals (and main thread)? */
3280af22 152 if (!PL_linestr) {
4d1ff10f 153#ifdef USE_5005THREADS
533c011a 154 MUTEX_INIT(&PL_sv_mutex);
a863c7d1
MB		 155 /*
156 * Safe to use basic SV functions from now on (though
157 * not things like mortals or tainting yet).
158 */
533c011a
NIS		 159 MUTEX_INIT(&PL_eval_mutex);
160 COND_INIT(&PL_eval_cond);
161 MUTEX_INIT(&PL_threads_mutex);
162 COND_INIT(&PL_nthreads_cond);
ba869deb 163# ifdef EMULATE_ATOMIC_REFCOUNTS
533c011a 164 MUTEX_INIT(&PL_svref_mutex);
ba869deb 165# endif /* EMULATE_ATOMIC_REFCOUNTS */
a863c7d1 166
5ff3f7a4 167 MUTEX_INIT(&PL_cred_mutex);
3d35f11b
GS		 168 MUTEX_INIT(&PL_sv_lock_mutex);
169 MUTEX_INIT(&PL_fdpid_mutex);
5ff3f7a4 170
199100c8 171 thr = init_main_thread();
4d1ff10f 172#endif /* USE_5005THREADS */
11343788 173
14dd3ad8 174#ifdef PERL_FLEXIBLE_EXCEPTIONS
0b94c7bb 175 PL_protect = MEMBER_TO_FPTR(Perl_default_protect); /* for exceptions */
14dd3ad8 176#endif
312caa8e 177
2aea9f8a
GS		 178 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
179
3280af22
NIS		 180 PL_linestr = NEWSV(65,79);
181 sv_upgrade(PL_linestr,SVt_PVIV);
79072805 182
3280af22 183 if (!SvREADONLY(&PL_sv_undef)) {
d689ffdd
JP		 184 /* set read-only and try to insure than we wont see REFCNT==0
185 very often */
186
3280af22
NIS		 187 SvREADONLY_on(&PL_sv_undef);
188 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
79072805 189
3280af22
NIS		 190 sv_setpv(&PL_sv_no,PL_No);
191 SvNV(&PL_sv_no);
192 SvREADONLY_on(&PL_sv_no);
193 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
79072805 194
3280af22
NIS		 195 sv_setpv(&PL_sv_yes,PL_Yes);
196 SvNV(&PL_sv_yes);
197 SvREADONLY_on(&PL_sv_yes);
198 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
6e72f9df 199 }
79072805 200
cea2e8a9 201 PL_sighandlerp = Perl_sighandler;
3280af22 202 PL_pidstatus = newHV();
44a8e56a 203
79072805
LW		 204#ifdef MSDOS
205 /*
206 * There is no way we can refer to them from Perl so close them to save
207 * space. The other alternative would be to provide STDAUX and STDPRN
208 * filehandles.
209 */
2b96b0a5
JH		 210 (void)PerlIO_close(PerlIO_importFILE(stdaux, 0));
211 (void)PerlIO_close(PerlIO_importFILE(stdprn, 0));
79072805
LW		 212#endif
213 }
214
8bfdd7d9 215 PL_rs = newSVpvn("\n", 1);
dc92893f 216
cea2e8a9 217 init_stacks();
79072805 218
748a9306 219 init_ids();
3280af22 220 PL_lex_state = LEX_NOTPARSING;
a5f75d66 221
312caa8e 222 JMPENV_BOOTSTRAP;
f86702cc 223 STATUS_ALL_SUCCESS;
224
0672f40e 225 init_i18nl10n(1);
36477c24 226 SET_NUMERIC_STANDARD();
0b5b802d 227
a7cb1f99
GS		 228 {
229 U8 *s;
230 PL_patchlevel = NEWSV(0,4);
155aba94 231 (void)SvUPGRADE(PL_patchlevel, SVt_PVNV);
a7cb1f99 232 if (PERL_REVISION > 127 || PERL_VERSION > 127 || PERL_SUBVERSION > 127)
806e7201 233 SvGROW(PL_patchlevel, UTF8_MAXLEN*3+1);
a7cb1f99 234 s = (U8*)SvPVX(PL_patchlevel);
9041c2e3
NIS		 235 /* Build version strings using "native" characters */
236 s = uvchr_to_utf8(s, (UV)PERL_REVISION);
237 s = uvchr_to_utf8(s, (UV)PERL_VERSION);
238 s = uvchr_to_utf8(s, (UV)PERL_SUBVERSION);
a7cb1f99
GS		 239 *s = '\0';
240 SvCUR_set(PL_patchlevel, s - (U8*)SvPVX(PL_patchlevel));
241 SvPOK_on(PL_patchlevel);
242 SvNVX(PL_patchlevel) = (NV)PERL_REVISION
243 + ((NV)PERL_VERSION / (NV)1000)
cceca5ed 244#if defined(PERL_SUBVERSION) && PERL_SUBVERSION > 0
a7cb1f99 245 + ((NV)PERL_SUBVERSION / (NV)1000000)
a5f75d66 246#endif
a7cb1f99
GS		 247 ;
248 SvNOK_on(PL_patchlevel); /* dual valued */
249 SvUTF8_on(PL_patchlevel);
250 SvREADONLY_on(PL_patchlevel);
251 }
79072805 252
ab821d7f 253#if defined(LOCAL_PATCH_COUNT)
3280af22 254 PL_localpatches = local_patches; /* For possible -v */
ab821d7f 255#endif
256
52853b95
GS		 257#ifdef HAVE_INTERP_INTERN
258 sys_intern_init();
259#endif
260
4b556e6c 261 PerlIO_init(); /* Hook to IO system */
760ac839 262
3280af22
NIS		 263 PL_fdpid = newAV(); /* for remembering popen pids by fd */
264 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
24944567 265 PL_errors = newSVpvn("",0);
1fcf4c12 266#ifdef USE_ITHREADS
13137afc
AB		 267 PL_regex_padav = newAV();
268 av_push(PL_regex_padav,(SV*)newAV()); /* First entry is an array of empty elements */
269 PL_regex_pad = AvARRAY(PL_regex_padav);
1fcf4c12 270#endif
e5dd39fc
AB		 271#ifdef USE_REENTRANT_API
272 New(31337, PL_reentrant_buffer,1, REBUF);
273 New(31337, PL_reentrant_buffer->tmbuff,1, struct tm);
274#endif
8990e307 275 ENTER;
79072805
LW		 276}
277
954c1994
GS		 278/*
279=for apidoc perl_destruct
280
281Shuts down a Perl interpreter. See L<perlembed>.
282
283=cut
284*/
285
31d77e54 286int
0cb96387 287perl_destruct(pTHXx)
79072805 288{
7c474504 289 volatile int destruct_level; /* 0=none, 1=full, 2=full with checks */
a0d0e21e 290 HV *hv;
4d1ff10f 291#ifdef USE_5005THREADS
33f46ff6 292 Thread t;
cea2e8a9 293 dTHX;
4d1ff10f 294#endif /* USE_5005THREADS */
8990e307 295
7766f137
GS		 296 /* wait for all pseudo-forked children to finish */
297 PERL_WAIT_FOR_CHILDREN;
298
4d1ff10f 299#ifdef USE_5005THREADS
0f15f207 300#ifndef FAKE_THREADS
8023c3ce
MB		 301 /* Pass 1 on any remaining threads: detach joinables, join zombies */
302 retry_cleanup:
533c011a 303 MUTEX_LOCK(&PL_threads_mutex);
bf49b057 304 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 305 "perl_destruct: waiting for %d threads...\n",
533c011a 306 PL_nthreads - 1));
33f46ff6 307 for (t = thr->next; t != thr; t = t->next) {
605e5515
MB		 308 MUTEX_LOCK(&t->mutex);
309 switch (ThrSTATE(t)) {
310 AV *av;
c7848ba1 311 case THRf_ZOMBIE:
bf49b057 312 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 313 "perl_destruct: joining zombie %p\n", t));
605e5515
MB		 314 ThrSETSTATE(t, THRf_DEAD);
315 MUTEX_UNLOCK(&t->mutex);
533c011a 316 PL_nthreads--;
8023c3ce
MB		 317 /*
318 * The SvREFCNT_dec below may take a long time (e.g. av
319 * may contain an object scalar whose destructor gets
320 * called) so we have to unlock threads_mutex and start
321 * all over again.
322 */
533c011a 323 MUTEX_UNLOCK(&PL_threads_mutex);
ea0efc06 324 JOIN(t, &av);
605e5515 325 SvREFCNT_dec((SV*)av);
bf49b057 326 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 327 "perl_destruct: joined zombie %p OK\n", t));
8023c3ce 328 goto retry_cleanup;
c7848ba1 329 case THRf_R_JOINABLE:
bf49b057 330 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1
MB		 331 "perl_destruct: detaching thread %p\n", t));
332 ThrSETSTATE(t, THRf_R_DETACHED);
ac27b0f5 333 /*
c7848ba1
MB		 334 * We unlock threads_mutex and t->mutex in the opposite order
335 * from which we locked them just so that DETACH won't
336 * deadlock if it panics. It's only a breach of good style
337 * not a bug since they are unlocks not locks.
338 */
533c011a 339 MUTEX_UNLOCK(&PL_threads_mutex);
c7848ba1
MB		 340 DETACH(t);
341 MUTEX_UNLOCK(&t->mutex);
8023c3ce 342 goto retry_cleanup;
c7848ba1 343 default:
bf49b057 344 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1
MB		 345 "perl_destruct: ignoring %p (state %u)\n",
346 t, ThrSTATE(t)));
347 MUTEX_UNLOCK(&t->mutex);
c7848ba1 348 /* fall through and out */
33f46ff6
MB		 349 }
350 }
8023c3ce
MB		 351 /* We leave the above "Pass 1" loop with threads_mutex still locked */
352
353 /* Pass 2 on remaining threads: wait for the thread count to drop to one */
533c011a 354 while (PL_nthreads > 1)
11343788 355 {
bf49b057 356 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 357 "perl_destruct: final wait for %d threads\n",
533c011a
NIS		 358 PL_nthreads - 1));
359 COND_WAIT(&PL_nthreads_cond, &PL_threads_mutex);
11343788
MB		 360 }
361 /* At this point, we're the last thread */
533c011a 362 MUTEX_UNLOCK(&PL_threads_mutex);
bf49b057 363 DEBUG_S(PerlIO_printf(Perl_debug_log, "perl_destruct: armageddon has arrived\n"));
533c011a
NIS		 364 MUTEX_DESTROY(&PL_threads_mutex);
365 COND_DESTROY(&PL_nthreads_cond);
b57a092c 366 PL_nthreads--;
0f15f207 367#endif /* !defined(FAKE_THREADS) */
4d1ff10f 368#endif /* USE_5005THREADS */
11343788 369
3280af22 370 destruct_level = PL_perl_destruct_level;
4633a7c4
LW		 371#ifdef DEBUGGING
372 {
373 char *s;
155aba94 374 if ((s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL"))) {
5f05dabc 375 int i = atoi(s);
376 if (destruct_level < i)
377 destruct_level = i;
378 }
4633a7c4
LW		 379 }
380#endif
381
31d77e54
AB		 382
383 if(PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB		 384 dJMPENV;
385 int x = 0;
386
387 JMPENV_PUSH(x);
388 if (PL_endav && !PL_minus_c)
389 call_list(PL_scopestack_ix, PL_endav);
390 JMPENV_POP;
26f423df 391 }
f3faeb53 392 LEAVE;
a0d0e21e
LW		 393 FREETMPS;
394
ff0cee69 395 /* We must account for everything. */
396
397 /* Destroy the main CV and syntax tree */
3280af22
NIS		 398 if (PL_main_root) {
399 PL_curpad = AvARRAY(PL_comppad);
400 op_free(PL_main_root);
401 PL_main_root = Nullop;
a0d0e21e 402 }
3280af22
NIS		 403 PL_curcop = &PL_compiling;
404 PL_main_start = Nullop;
405 SvREFCNT_dec(PL_main_cv);
406 PL_main_cv = Nullcv;
24d3c518 407 PL_dirty = TRUE;
ff0cee69 408
13621cfb
NIS		 409 /* Tell PerlIO we are about to tear things apart in case
410 we have layers which are using resources that should
411 be cleaned up now.
412 */
413
414 PerlIO_destruct(aTHX);
415
3280af22 416 if (PL_sv_objcount) {
a0d0e21e
LW		 417 /*
418 * Try to destruct global references. We do this first so that the
419 * destructors and destructees still exist. Some sv's might remain.
420 * Non-referenced objects are on their own.
421 */
a0d0e21e 422 sv_clean_objs();
8990e307
LW		 423 }
424
5cd24f17 425 /* unhook hooks which will soon be, or use, destroyed data */
3280af22
NIS		 426 SvREFCNT_dec(PL_warnhook);
427 PL_warnhook = Nullsv;
428 SvREFCNT_dec(PL_diehook);
429 PL_diehook = Nullsv;
5cd24f17 430
4b556e6c 431 /* call exit list functions */
3280af22 432 while (PL_exitlistlen-- > 0)
acfe0abc 433 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 434
3280af22 435 Safefree(PL_exitlist);
4b556e6c 436
a0d0e21e 437 if (destruct_level == 0){
8990e307 438
a0d0e21e 439 DEBUG_P(debprofdump());
ac27b0f5 440
a0d0e21e 441 /* The exit() function will do everything that needs doing. */
31d77e54 442 return STATUS_NATIVE_EXPORT;;
a0d0e21e 443 }
5dd60ef7 444
551a8b83
JH		 445 /* jettison our possibly duplicated environment */
446
447#ifdef USE_ENVIRON_ARRAY
448 if (environ != PL_origenviron) {
449 I32 i;
450
451 for (i = 0; environ[i]; i++)
4b420006
JH		 452 safesysfree(environ[i]);
453 /* Must use safesysfree() when working with environ. */
454 safesysfree(environ);
551a8b83
JH		 455
456 environ = PL_origenviron;
457 }
458#endif
459
5f8cb046
DM		 460#ifdef USE_ITHREADS
461 /* the syntax tree is shared between clones
462 * so op_free(PL_main_root) only ReREFCNT_dec's
463 * REGEXPs in the parent interpreter
464 * we need to manually ReREFCNT_dec for the clones
465 */
466 {
467 I32 i = AvFILLp(PL_regex_padav) + 1;
468 SV **ary = AvARRAY(PL_regex_padav);
469
470 while (i) {
35061a7e 471 SV *resv = ary[--i];
ba89bb6e 472 REGEXP *re = INT2PTR(REGEXP *,SvIVX(resv));
35061a7e
DM		 473
474 if (SvFLAGS(resv) & SVf_BREAK) {
577e12cc 475 /* this is PL_reg_curpm, already freed
35061a7e
DM		 476 * flag is set in regexec.c:S_regtry
477 */
478 SvFLAGS(resv) &= ~SVf_BREAK;
1cc8b4c5
AB		 479 }
480 else if(SvREPADTMP(resv)) {
481 SvREPADTMP_off(resv);
482 }
35061a7e 483 else {
5f8cb046
DM		 484 ReREFCNT_dec(re);
485 }
486 }
487 }
488 SvREFCNT_dec(PL_regex_padav);
489 PL_regex_padav = Nullav;
490 PL_regex_pad = NULL;
491#endif
492
5f05dabc 493 /* loosen bonds of global variables */
494
3280af22
NIS		 495 if(PL_rsfp) {
496 (void)PerlIO_close(PL_rsfp);
497 PL_rsfp = Nullfp;
8ebc5c01 498 }
499
500 /* Filters for program text */
3280af22
NIS		 501 SvREFCNT_dec(PL_rsfp_filters);
502 PL_rsfp_filters = Nullav;
8ebc5c01 503
504 /* switches */
3280af22
NIS		 505 PL_preprocess = FALSE;
506 PL_minus_n = FALSE;
507 PL_minus_p = FALSE;
508 PL_minus_l = FALSE;
509 PL_minus_a = FALSE;
510 PL_minus_F = FALSE;
511 PL_doswitches = FALSE;
599cee73 512 PL_dowarn = G_WARN_OFF;
3280af22
NIS		 513 PL_doextract = FALSE;
514 PL_sawampersand = FALSE; /* must save all match strings */
3280af22
NIS		 515 PL_unsafe = FALSE;
516
517 Safefree(PL_inplace);
518 PL_inplace = Nullch;
a7cb1f99 519 SvREFCNT_dec(PL_patchlevel);
3280af22
NIS		 520
521 if (PL_e_script) {
522 SvREFCNT_dec(PL_e_script);
523 PL_e_script = Nullsv;
8ebc5c01 524 }
525
bc0a45ed
DM		 526 while (--PL_origargc >= 0) {
527 Safefree(PL_origargv[PL_origargc]);
528 }
529 Safefree(PL_origargv);
530
8ebc5c01 531 /* magical thingies */
532
7889fe52
NIS		 533 SvREFCNT_dec(PL_ofs_sv); /* $, */
534 PL_ofs_sv = Nullsv;
5f05dabc 535
7889fe52
NIS		 536 SvREFCNT_dec(PL_ors_sv); /* $\ */
537 PL_ors_sv = Nullsv;
8ebc5c01 538
3280af22
NIS		 539 SvREFCNT_dec(PL_rs); /* $/ */
540 PL_rs = Nullsv;
dc92893f 541
d33b2eba
GS		 542 PL_multiline = 0; /* $* */
543 Safefree(PL_osname); /* $^O */
544 PL_osname = Nullch;
5f05dabc 545
3280af22
NIS		 546 SvREFCNT_dec(PL_statname);
547 PL_statname = Nullsv;
548 PL_statgv = Nullgv;
5f05dabc 549
8ebc5c01 550 /* defgv, aka *_ should be taken care of elsewhere */
551
8ebc5c01 552 /* clean up after study() */
3280af22
NIS		 553 SvREFCNT_dec(PL_lastscream);
554 PL_lastscream = Nullsv;
555 Safefree(PL_screamfirst);
556 PL_screamfirst = 0;
557 Safefree(PL_screamnext);
558 PL_screamnext = 0;
8ebc5c01 559
7d5ea4e7
GS		 560 /* float buffer */
561 Safefree(PL_efloatbuf);
562 PL_efloatbuf = Nullch;
563 PL_efloatsize = 0;
564
8ebc5c01 565 /* startup and shutdown function lists */
3280af22
NIS		 566 SvREFCNT_dec(PL_beginav);
567 SvREFCNT_dec(PL_endav);
7d30b5c4 568 SvREFCNT_dec(PL_checkav);
3280af22
NIS		 569 SvREFCNT_dec(PL_initav);
570 PL_beginav = Nullav;
571 PL_endav = Nullav;
7d30b5c4 572 PL_checkav = Nullav;
3280af22 573 PL_initav = Nullav;
5618dfe8 574
8ebc5c01 575 /* shortcuts just get cleared */
3280af22 576 PL_envgv = Nullgv;
3280af22
NIS		 577 PL_incgv = Nullgv;
578 PL_hintgv = Nullgv;
579 PL_errgv = Nullgv;
580 PL_argvgv = Nullgv;
581 PL_argvoutgv = Nullgv;
582 PL_stdingv = Nullgv;
bf49b057 583 PL_stderrgv = Nullgv;
3280af22
NIS		 584 PL_last_in_gv = Nullgv;
585 PL_replgv = Nullgv;
5c831c24 586 PL_debstash = Nullhv;
8ebc5c01 587
588 /* reset so print() ends up where we expect */
589 setdefout(Nullgv);
5c831c24 590
7a1c5554
GS		 591 SvREFCNT_dec(PL_argvout_stack);
592 PL_argvout_stack = Nullav;
8ebc5c01 593
5c831c24
GS		 594 SvREFCNT_dec(PL_modglobal);
595 PL_modglobal = Nullhv;
596 SvREFCNT_dec(PL_preambleav);
597 PL_preambleav = Nullav;
598 SvREFCNT_dec(PL_subname);
599 PL_subname = Nullsv;
600 SvREFCNT_dec(PL_linestr);
601 PL_linestr = Nullsv;
602 SvREFCNT_dec(PL_pidstatus);
603 PL_pidstatus = Nullhv;
604 SvREFCNT_dec(PL_toptarget);
605 PL_toptarget = Nullsv;
606 SvREFCNT_dec(PL_bodytarget);
607 PL_bodytarget = Nullsv;
608 PL_formtarget = Nullsv;
609
d33b2eba 610 /* free locale stuff */
b9582b6a 611#ifdef USE_LOCALE_COLLATE
d33b2eba
GS		 612 Safefree(PL_collation_name);
613 PL_collation_name = Nullch;
b9582b6a 614#endif
d33b2eba 615
b9582b6a 616#ifdef USE_LOCALE_NUMERIC
d33b2eba
GS		 617 Safefree(PL_numeric_name);
618 PL_numeric_name = Nullch;
a453c169 619 SvREFCNT_dec(PL_numeric_radix_sv);
b9582b6a 620#endif
d33b2eba 621
5c831c24
GS		 622 /* clear utf8 character classes */
623 SvREFCNT_dec(PL_utf8_alnum);
624 SvREFCNT_dec(PL_utf8_alnumc);
625 SvREFCNT_dec(PL_utf8_ascii);
626 SvREFCNT_dec(PL_utf8_alpha);
627 SvREFCNT_dec(PL_utf8_space);
628 SvREFCNT_dec(PL_utf8_cntrl);
629 SvREFCNT_dec(PL_utf8_graph);
630 SvREFCNT_dec(PL_utf8_digit);
631 SvREFCNT_dec(PL_utf8_upper);
632 SvREFCNT_dec(PL_utf8_lower);
633 SvREFCNT_dec(PL_utf8_print);
634 SvREFCNT_dec(PL_utf8_punct);
635 SvREFCNT_dec(PL_utf8_xdigit);
636 SvREFCNT_dec(PL_utf8_mark);
637 SvREFCNT_dec(PL_utf8_toupper);
638 SvREFCNT_dec(PL_utf8_tolower);
639 PL_utf8_alnum = Nullsv;
640 PL_utf8_alnumc = Nullsv;
641 PL_utf8_ascii = Nullsv;
642 PL_utf8_alpha = Nullsv;
643 PL_utf8_space = Nullsv;
644 PL_utf8_cntrl = Nullsv;
645 PL_utf8_graph = Nullsv;
646 PL_utf8_digit = Nullsv;
647 PL_utf8_upper = Nullsv;
648 PL_utf8_lower = Nullsv;
649 PL_utf8_print = Nullsv;
650 PL_utf8_punct = Nullsv;
651 PL_utf8_xdigit = Nullsv;
652 PL_utf8_mark = Nullsv;
653 PL_utf8_toupper = Nullsv;
654 PL_utf8_totitle = Nullsv;
655 PL_utf8_tolower = Nullsv;
656
971a9dd3
GS		 657 if (!specialWARN(PL_compiling.cop_warnings))
658 SvREFCNT_dec(PL_compiling.cop_warnings);
5c831c24 659 PL_compiling.cop_warnings = Nullsv;
ac27b0f5
NIS		 660 if (!specialCopIO(PL_compiling.cop_io))
661 SvREFCNT_dec(PL_compiling.cop_io);
662 PL_compiling.cop_io = Nullsv;
f4dd75d9
GS		 663#ifdef USE_ITHREADS
664 Safefree(CopFILE(&PL_compiling));
665 CopFILE(&PL_compiling) = Nullch;
666 Safefree(CopSTASHPV(&PL_compiling));
667#else
01724ea0 668 SvREFCNT_dec(CopFILEGV(&PL_compiling));
f4dd75d9
GS		 669 CopFILEGV(&PL_compiling) = Nullgv;
670 /* cop_stash is not refcounted */
01724ea0 671#endif
5c831c24 672
a0d0e21e 673 /* Prepare to destruct main symbol table. */
5f05dabc 674
3280af22
NIS		 675 hv = PL_defstash;
676 PL_defstash = 0;
a0d0e21e 677 SvREFCNT_dec(hv);
5c831c24
GS		 678 SvREFCNT_dec(PL_curstname);
679 PL_curstname = Nullsv;
a0d0e21e 680
5a844595
GS		 681 /* clear queued errors */
682 SvREFCNT_dec(PL_errors);
683 PL_errors = Nullsv;
684
a0d0e21e 685 FREETMPS;
0453d815 686 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
3280af22 687 if (PL_scopestack_ix != 0)
0453d815
PM		 688 Perl_warner(aTHX_ WARN_INTERNAL,
689 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
3280af22
NIS		 690 (long)PL_scopestack_ix);
691 if (PL_savestack_ix != 0)
0453d815
PM		 692 Perl_warner(aTHX_ WARN_INTERNAL,
693 "Unbalanced saves: %ld more saves than restores\n",
3280af22
NIS		 694 (long)PL_savestack_ix);
695 if (PL_tmps_floor != -1)
0453d815 696 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced tmps: %ld more allocs than frees\n",
3280af22 697 (long)PL_tmps_floor + 1);
a0d0e21e 698 if (cxstack_ix != -1)
0453d815 699 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced context: %ld more PUSHes than POPs\n",
ff0cee69 700 (long)cxstack_ix + 1);
a0d0e21e 701 }
8990e307
LW		 702
703 /* Now absolutely destruct everything, somehow or other, loops or no. */
d33b2eba 704 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
3280af22 705 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
5226ed68
JH		 706
707 /* the 2 is for PL_fdpid and PL_strtab */
708 while (PL_sv_count > 2 && sv_clean_all())
709 ;
710
d33b2eba
GS		 711 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
712 SvFLAGS(PL_fdpid) |= SVt_PVAV;
3280af22
NIS		 713 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
714 SvFLAGS(PL_strtab) |= SVt_PVHV;
d33b2eba 715
d4777f27
GS		 716 AvREAL_off(PL_fdpid); /* no surviving entries */
717 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
d33b2eba
GS		 718 PL_fdpid = Nullav;
719
6c644e78
GS		 720#ifdef HAVE_INTERP_INTERN
721 sys_intern_clear();
722#endif
723
6e72f9df 724 /* Destruct the global string table. */
725 {
726 /* Yell and reset the HeVAL() slots that are still holding refcounts,
727 * so that sv_free() won't fail on them.
728 */
729 I32 riter;
730 I32 max;
731 HE *hent;
732 HE **array;
733
734 riter = 0;
3280af22
NIS		 735 max = HvMAX(PL_strtab);
736 array = HvARRAY(PL_strtab);
6e72f9df 737 hent = array[0];
738 for (;;) {
0453d815
PM		 739 if (hent && ckWARN_d(WARN_INTERNAL)) {
740 Perl_warner(aTHX_ WARN_INTERNAL,
741 "Unbalanced string table refcount: (%d) for \"%s\"",
6e72f9df 742 HeVAL(hent) - Nullsv, HeKEY(hent));
743 HeVAL(hent) = Nullsv;
744 hent = HeNEXT(hent);
745 }
746 if (!hent) {
747 if (++riter > max)
748 break;
749 hent = array[riter];
750 }
751 }
752 }
3280af22 753 SvREFCNT_dec(PL_strtab);
6e72f9df 754
e652bb2f 755#ifdef USE_ITHREADS
a0739874
DM		 756 /* free the pointer table used for cloning */
757 ptr_table_free(PL_ptr_table);
53186e96 758#endif
a0739874 759
d33b2eba
GS		 760 /* free special SVs */
761
762 SvREFCNT(&PL_sv_yes) = 0;
763 sv_clear(&PL_sv_yes);
764 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 765 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS		 766
767 SvREFCNT(&PL_sv_no) = 0;
768 sv_clear(&PL_sv_no);
769 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 770 SvFLAGS(&PL_sv_no) = 0;
01724ea0
GS		 771
772 SvREFCNT(&PL_sv_undef) = 0;
773 SvREADONLY_off(&PL_sv_undef);
d33b2eba 774
0453d815
PM		 775 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
776 Perl_warner(aTHX_ WARN_INTERNAL,"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 777
3280af22 778 Safefree(PL_origfilename);
3280af22 779 Safefree(PL_reg_start_tmp);
5c5e4c24
IZ		 780 if (PL_reg_curpm)
781 Safefree(PL_reg_curpm);
82ba1be6 782 Safefree(PL_reg_poscache);
3280af22
NIS		 783 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
784 Safefree(PL_op_mask);
cf36064f
GS		 785 Safefree(PL_psig_ptr);
786 Safefree(PL_psig_name);
2c2666fc 787 Safefree(PL_bitcount);
ce08f86c 788 Safefree(PL_psig_pend);
6e72f9df 789 nuke_stacks();
3280af22 790 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
ac27b0f5 791
a0d0e21e 792 DEBUG_P(debprofdump());
4d1ff10f 793#ifdef USE_5005THREADS
5f08fbcd 794 MUTEX_DESTROY(&PL_strtab_mutex);
533c011a
NIS		 795 MUTEX_DESTROY(&PL_sv_mutex);
796 MUTEX_DESTROY(&PL_eval_mutex);
5ff3f7a4 797 MUTEX_DESTROY(&PL_cred_mutex);
3d35f11b 798 MUTEX_DESTROY(&PL_fdpid_mutex);
533c011a 799 COND_DESTROY(&PL_eval_cond);
11d617a5
GS		 800#ifdef EMULATE_ATOMIC_REFCOUNTS
801 MUTEX_DESTROY(&PL_svref_mutex);
802#endif /* EMULATE_ATOMIC_REFCOUNTS */
fc36a67e 803
8023c3ce 804 /* As the penultimate thing, free the non-arena SV for thrsv */
533c011a
NIS		 805 Safefree(SvPVX(PL_thrsv));
806 Safefree(SvANY(PL_thrsv));
807 Safefree(PL_thrsv);
808 PL_thrsv = Nullsv;
4d1ff10f 809#endif /* USE_5005THREADS */
d33b2eba 810
e5dd39fc
AB		 811#ifdef USE_REENTRANT_API
812 Safefree(PL_reentrant_buffer->tmbuff);
813 Safefree(PL_reentrant_buffer);
814#endif
815
612f20c3
GS		 816 sv_free_arenas();
817
fc36a67e 818 /* As the absolutely last thing, free the non-arena SV for mess() */
819
3280af22 820 if (PL_mess_sv) {
9c63abab
GS		 821 /* it could have accumulated taint magic */
822 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
823 MAGIC* mg;
824 MAGIC* moremagic;
825 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
826 moremagic = mg->mg_moremagic;
14befaf4
DM		 827 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
828 && mg->mg_len >= 0)
9c63abab
GS		 829 Safefree(mg->mg_ptr);
830 Safefree(mg);
831 }
832 }
fc36a67e 833 /* we know that type >= SVt_PV */
155aba94 834 (void)SvOOK_off(PL_mess_sv);
3280af22
NIS		 835 Safefree(SvPVX(PL_mess_sv));
836 Safefree(SvANY(PL_mess_sv));
837 Safefree(PL_mess_sv);
838 PL_mess_sv = Nullsv;
fc36a67e 839 }
31d77e54 840 return STATUS_NATIVE_EXPORT;
79072805
LW		 841}
842
954c1994
GS		 843/*
844=for apidoc perl_free
845
846Releases a Perl interpreter. See L<perlembed>.
847
848=cut
849*/
850
79072805 851void
0cb96387 852perl_free(pTHXx)
79072805 853{
acfe0abc 854#if defined(WIN32) || defined(NETWARE)
ce3e5b80 855# if defined(PERL_IMPLICIT_SYS)
acfe0abc
GS		 856# ifdef NETWARE
857 void *host = nw_internal_host;
858# else
859 void *host = w32_internal_host;
860# endif
861# ifndef NETWARE
862 if (PerlProc_lasthost()) {
6ea0e807 863# ifdef USE_PERLIO
ce08f86c 864 PerlIO_cleanup();
6ea0e807 865# endif
acfe0abc
GS		 866 }
867# endif
ce3e5b80 868 PerlMem_free(aTHXx);
acfe0abc
GS		 869# ifdef NETWARE
870 nw5_delete_internal_host(host);
871# else
872 win32_delete_internal_host(host);
873# endif
1c0ca838 874# else
6ea0e807 875# ifdef USE_PERLIO
acfe0abc 876 PerlIO_cleanup();
6ea0e807 877# endif
1c0ca838
GS		 878 PerlMem_free(aTHXx);
879# endif
acfe0abc
GS		 880#else
881 PerlMem_free(aTHXx);
76e3520e 882#endif
79072805
LW		 883}
884
4b556e6c 885void
864dbfa3 886Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 887{
3280af22
NIS		 888 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
889 PL_exitlist[PL_exitlistlen].fn = fn;
890 PL_exitlist[PL_exitlistlen].ptr = ptr;
891 ++PL_exitlistlen;
4b556e6c
JD		 892}
893
954c1994
GS		 894/*
895=for apidoc perl_parse
896
897Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
898
899=cut
900*/
901
79072805 902int
0cb96387 903perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 904{
6224f72b 905 I32 oldscope;
6224f72b 906 int ret;
db36c5a1 907 dJMPENV;
4d1ff10f 908#ifdef USE_5005THREADS
cea2e8a9
GS		 909 dTHX;
910#endif
8d063cd8 911
a687059c
LW		 912#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
913#ifdef IAMSUID
914#undef IAMSUID
cea2e8a9 915 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
a687059c
LW		 916setuid perl scripts securely.\n");
917#endif
918#endif
919
8f1f23e8 920#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
6e72f9df 921 _dyld_lookup_and_bind
922 ("__environ", (unsigned long *) &environ_pointer, NULL);
923#endif /* environ */
924
3280af22 925 PL_origargc = argc;
bc0a45ed
DM		 926 {
927 /* we copy rather than point to argv
928 * since perl_clone will copy and perl_destruct
929 * has no way of knowing if we've made a copy or
930 * just point to argv
931 */
932 int i = PL_origargc;
933 New(0, PL_origargv, i+1, char*);
934 PL_origargv[i] = '\0';
935 while (i-- > 0) {
936 PL_origargv[i] = savepv(argv[i]);
937 }
938 }
939
fa6a1c44 940#ifdef USE_ENVIRON_ARRAY
3280af22 941 PL_origenviron = environ;
a0d0e21e
LW		 942#endif
943
3280af22 944 if (PL_do_undump) {
a0d0e21e
LW		 945
946 /* Come here if running an undumped a.out. */
947
3280af22
NIS		 948 PL_origfilename = savepv(argv[0]);
949 PL_do_undump = FALSE;
a0d0e21e 950 cxstack_ix = -1; /* start label stack again */
748a9306 951 init_ids();
a0d0e21e
LW		 952 init_postdump_symbols(argc,argv,env);
953 return 0;
954 }
955
3280af22
NIS		 956 if (PL_main_root) {
957 PL_curpad = AvARRAY(PL_comppad);
958 op_free(PL_main_root);
959 PL_main_root = Nullop;
ff0cee69 960 }
3280af22
NIS		 961 PL_main_start = Nullop;
962 SvREFCNT_dec(PL_main_cv);
963 PL_main_cv = Nullcv;
79072805 964
3280af22
NIS		 965 time(&PL_basetime);
966 oldscope = PL_scopestack_ix;
599cee73 967 PL_dowarn = G_WARN_OFF;
f86702cc 968
14dd3ad8
GS		 969#ifdef PERL_FLEXIBLE_EXCEPTIONS
970 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
971#else
972 JMPENV_PUSH(ret);
973#endif
6224f72b 974 switch (ret) {
312caa8e 975 case 0:
14dd3ad8
GS		 976#ifndef PERL_FLEXIBLE_EXCEPTIONS
977 parse_body(env,xsinit);
978#endif
7d30b5c4
GS		 979 if (PL_checkav)
980 call_list(oldscope, PL_checkav);
14dd3ad8
GS		 981 ret = 0;
982 break;
6224f72b
GS		 983 case 1:
984 STATUS_ALL_FAILURE;
985 /* FALL THROUGH */
986 case 2:
987 /* my_exit() was called */
3280af22 988 while (PL_scopestack_ix > oldscope)
6224f72b
GS		 989 LEAVE;
990 FREETMPS;
3280af22 991 PL_curstash = PL_defstash;
7d30b5c4
GS		 992 if (PL_checkav)
993 call_list(oldscope, PL_checkav);
14dd3ad8
GS		 994 ret = STATUS_NATIVE_EXPORT;
995 break;
6224f72b 996 case 3:
bf49b057 997 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS		 998 ret = 1;
999 break;
6224f72b 1000 }
14dd3ad8
GS		 1001 JMPENV_POP;
1002 return ret;
1003}
1004
1005#ifdef PERL_FLEXIBLE_EXCEPTIONS
1006STATIC void *
1007S_vparse_body(pTHX_ va_list args)
1008{
1009 char **env = va_arg(args, char**);
1010 XSINIT_t xsinit = va_arg(args, XSINIT_t);
1011
1012 return parse_body(env, xsinit);
312caa8e 1013}
14dd3ad8 1014#endif
312caa8e
CS		 1015
1016STATIC void *
14dd3ad8 1017S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1018{
312caa8e
CS		 1019 int argc = PL_origargc;
1020 char **argv = PL_origargv;
312caa8e
CS		 1021 char *scriptname = NULL;
1022 int fdscript = -1;
1023 VOL bool dosearch = FALSE;
1024 char *validarg = "";
1025 AV* comppadlist;
1026 register SV *sv;
1027 register char *s;
cf756827 1028 char *cddir = Nullch;
312caa8e 1029
3280af22 1030 sv_setpvn(PL_linestr,"",0);
79cb57f6 1031 sv = newSVpvn("",0); /* first used for -I flags */
6224f72b
GS		 1032 SAVEFREESV(sv);
1033 init_main_stash();
54310121 1034
6224f72b
GS		 1035 for (argc--,argv++; argc > 0; argc--,argv++) {
1036 if (argv[0][0] != '-' || !argv[0][1])
1037 break;
1038#ifdef DOSUID
1039 if (*validarg)
1040 validarg = " PHOOEY ";
1041 else
1042 validarg = argv[0];
13281fa4 1043#endif
6224f72b
GS		 1044 s = argv[0]+1;
1045 reswitch:
1046 switch (*s) {
729a02f2
GS		 1047 case 'C':
1048#ifdef WIN32
c0932edc 1049 win32_argv2utf8(argc-1, argv+1);
729a02f2
GS		 1050 /* FALL THROUGH */
1051#endif
1d5472a9
GS		 1052#ifndef PERL_STRICT_CR
1053 case '\r':
1054#endif
6224f72b
GS		 1055 case ' ':
1056 case '0':
1057 case 'F':
1058 case 'a':
1059 case 'c':
1060 case 'd':
1061 case 'D':
1062 case 'h':
1063 case 'i':
1064 case 'l':
1065 case 'M':
1066 case 'm':
1067 case 'n':
1068 case 'p':
1069 case 's':
1070 case 'u':
1071 case 'U':
1072 case 'v':
599cee73
PM		 1073 case 'W':
1074 case 'X':
6224f72b 1075 case 'w':
155aba94 1076 if ((s = moreswitches(s)))
6224f72b
GS		 1077 goto reswitch;
1078 break;
33b78306 1079
6224f72b 1080 case 'T':
3280af22 1081 PL_tainting = TRUE;
6224f72b
GS		 1082 s++;
1083 goto reswitch;
f86702cc 1084
6224f72b 1085 case 'e':
bf4acbe4
GS		 1086#ifdef MACOS_TRADITIONAL
1087 /* ignore -e for Dev:Pseudo argument */
1088 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
ac27b0f5 1089 break;
bf4acbe4 1090#endif
3280af22 1091 if (PL_euid != PL_uid || PL_egid != PL_gid)
cea2e8a9 1092 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
3280af22 1093 if (!PL_e_script) {
79cb57f6 1094 PL_e_script = newSVpvn("",0);
0cb96387 1095 filter_add(read_e_script, NULL);
6224f72b
GS		 1096 }
1097 if (*++s)
3280af22 1098 sv_catpv(PL_e_script, s);
6224f72b 1099 else if (argv[1]) {
3280af22 1100 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS		 1101 argc--,argv++;
1102 }
1103 else
cea2e8a9 1104 Perl_croak(aTHX_ "No code specified for -e");
3280af22 1105 sv_catpv(PL_e_script, "\n");
6224f72b 1106 break;
afe37c7d 1107
6224f72b
GS		 1108 case 'I': /* -I handled both here and in moreswitches() */
1109 forbid_setid("-I");
1110 if (!*++s && (s=argv[1]) != Nullch) {
1111 argc--,argv++;
1112 }
6224f72b 1113 if (s && *s) {
0df16ed7
GS		 1114 char *p;
1115 STRLEN len = strlen(s);
1116 p = savepvn(s, len);
9c8a64f0 1117 incpush(p, TRUE, TRUE);
0df16ed7
GS		 1118 sv_catpvn(sv, "-I", 2);
1119 sv_catpvn(sv, p, len);
1120 sv_catpvn(sv, " ", 1);
6224f72b 1121 Safefree(p);
0df16ed7
GS		 1122 }
1123 else
a67e862a 1124 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b
GS		 1125 break;
1126 case 'P':
1127 forbid_setid("-P");
3280af22 1128 PL_preprocess = TRUE;
6224f72b
GS		 1129 s++;
1130 goto reswitch;
1131 case 'S':
1132 forbid_setid("-S");
1133 dosearch = TRUE;
1134 s++;
1135 goto reswitch;
1136 case 'V':
3280af22
NIS		 1137 if (!PL_preambleav)
1138 PL_preambleav = newAV();
1139 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
6224f72b 1140 if (*++s != ':') {
3280af22 1141 PL_Sv = newSVpv("print myconfig();",0);
6224f72b 1142#ifdef VMS
6b88bc9c 1143 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
6224f72b 1144#else
3280af22 1145 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
6224f72b 1146#endif
3280af22 1147 sv_catpv(PL_Sv,"\" Compile-time options:");
6224f72b 1148# ifdef DEBUGGING
3280af22 1149 sv_catpv(PL_Sv," DEBUGGING");
6224f72b 1150# endif
6224f72b 1151# ifdef MULTIPLICITY
8f872242 1152 sv_catpv(PL_Sv," MULTIPLICITY");
6224f72b 1153# endif
4d1ff10f
AB		 1154# ifdef USE_5005THREADS
1155 sv_catpv(PL_Sv," USE_5005THREADS");
b363f7ed 1156# endif
ac5e8965
JH		 1157# ifdef USE_ITHREADS
1158 sv_catpv(PL_Sv," USE_ITHREADS");
1159# endif
10cc9d2a
JH		 1160# ifdef USE_64_BIT_INT
1161 sv_catpv(PL_Sv," USE_64_BIT_INT");
1162# endif
1163# ifdef USE_64_BIT_ALL
1164 sv_catpv(PL_Sv," USE_64_BIT_ALL");
ac5e8965
JH		 1165# endif
1166# ifdef USE_LONG_DOUBLE
1167 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1168# endif
53430762
JH		 1169# ifdef USE_LARGE_FILES
1170 sv_catpv(PL_Sv," USE_LARGE_FILES");
1171# endif
ac5e8965
JH		 1172# ifdef USE_SOCKS
1173 sv_catpv(PL_Sv," USE_SOCKS");
1174# endif
b363f7ed
GS		 1175# ifdef PERL_IMPLICIT_CONTEXT
1176 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1177# endif
1178# ifdef PERL_IMPLICIT_SYS
1179 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1180# endif
3280af22 1181 sv_catpv(PL_Sv,"\\n\",");
b363f7ed 1182
6224f72b
GS		 1183#if defined(LOCAL_PATCH_COUNT)
1184 if (LOCAL_PATCH_COUNT > 0) {
1185 int i;
3280af22 1186 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
6224f72b 1187 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
3280af22 1188 if (PL_localpatches[i])
cea2e8a9 1189 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
6224f72b
GS		 1190 }
1191 }
1192#endif
cea2e8a9 1193 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
6224f72b
GS		 1194#ifdef __DATE__
1195# ifdef __TIME__
cea2e8a9 1196 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
6224f72b 1197# else
cea2e8a9 1198 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
6224f72b
GS		 1199# endif
1200#endif
3280af22 1201 sv_catpv(PL_Sv, "; \
6224f72b 1202$\"=\"\\n \"; \
69fcd688
JH		 1203@env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; ");
1204#ifdef __CYGWIN__
1205 sv_catpv(PL_Sv,"\
1206push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
1207#endif
1208 sv_catpv(PL_Sv, "\
6224f72b
GS		 1209print \" \\%ENV:\\n @env\\n\" if @env; \
1210print \" \\@INC:\\n @INC\\n\";");
1211 }
1212 else {
3280af22
NIS		 1213 PL_Sv = newSVpv("config_vars(qw(",0);
1214 sv_catpv(PL_Sv, ++s);
1215 sv_catpv(PL_Sv, "))");
6224f72b
GS		 1216 s += strlen(s);
1217 }
3280af22 1218 av_push(PL_preambleav, PL_Sv);
6224f72b
GS		 1219 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1220 goto reswitch;
1221 case 'x':
3280af22 1222 PL_doextract = TRUE;
6224f72b
GS		 1223 s++;
1224 if (*s)
f4c556ac 1225 cddir = s;
6224f72b
GS		 1226 break;
1227 case 0:
1228 break;
1229 case '-':
1230 if (!*++s || isSPACE(*s)) {
1231 argc--,argv++;
1232 goto switch_end;
1233 }
1234 /* catch use of gnu style long options */
1235 if (strEQ(s, "version")) {
1236 s = "v";
1237 goto reswitch;
1238 }
1239 if (strEQ(s, "help")) {
1240 s = "h";
1241 goto reswitch;
1242 }
1243 s--;
1244 /* FALL THROUGH */
1245 default:
cea2e8a9 1246 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW		 1247 }
1248 }
6224f72b 1249 switch_end:
54310121 1250
f675dbe5
CB		 1251 if (
1252#ifndef SECURE_INTERNAL_GETENV
1253 !PL_tainting &&
1254#endif
cf756827 1255 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1256 {
cf756827 1257 char *popt = s;
74288ac8
GS		 1258 while (isSPACE(*s))
1259 s++;
1260 if (*s == '-' && *(s+1) == 'T')
1261 PL_tainting = TRUE;
1262 else {
cf756827 1263 char *popt_copy = Nullch;
74288ac8 1264 while (s && *s) {
4ea8f8fb 1265 char *d;
74288ac8
GS		 1266 while (isSPACE(*s))
1267 s++;
1268 if (*s == '-') {
1269 s++;
1270 if (isSPACE(*s))
1271 continue;
1272 }
4ea8f8fb 1273 d = s;
74288ac8
GS		 1274 if (!*s)
1275 break;
1276 if (!strchr("DIMUdmw", *s))
cea2e8a9 1277 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS		 1278 while (++s && *s) {
1279 if (isSPACE(*s)) {
cf756827
GS		 1280 if (!popt_copy) {
1281 popt_copy = SvPVX(sv_2mortal(newSVpv(popt,0)));
1282 s = popt_copy + (s - popt);
1283 d = popt_copy + (d - popt);
1284 }
4ea8f8fb
MS		 1285 *s++ = '\0';
1286 break;
1287 }
1288 }
1289 moreswitches(d);
6224f72b 1290 }
6224f72b
GS		 1291 }
1292 }
a0d0e21e 1293
6224f72b
GS		 1294 if (!scriptname)
1295 scriptname = argv[0];
3280af22 1296 if (PL_e_script) {
6224f72b
GS		 1297 argc++,argv--;
1298 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1299 }
1300 else if (scriptname == Nullch) {
1301#ifdef MSDOS
1302 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1303 moreswitches("h");
1304#endif
1305 scriptname = "-";
1306 }
1307
1308 init_perllib();
1309
1310 open_script(scriptname,dosearch,sv,&fdscript);
1311
1312 validate_suid(validarg, scriptname,fdscript);
1313
64ca3a65 1314#ifndef PERL_MICRO
0b5b802d
GS		 1315#if defined(SIGCHLD) || defined(SIGCLD)
1316 {
1317#ifndef SIGCHLD
1318# define SIGCHLD SIGCLD
1319#endif
1320 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1321 if (sigstate == SIG_IGN) {
1322 if (ckWARN(WARN_SIGNAL))
1323 Perl_warner(aTHX_ WARN_SIGNAL,
1324 "Can't ignore signal CHLD, forcing to default");
1325 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1326 }
1327 }
1328#endif
64ca3a65 1329#endif
0b5b802d 1330
bf4acbe4
GS		 1331#ifdef MACOS_TRADITIONAL
1332 if (PL_doextract || gMacPerl_AlwaysExtract) {
1333#else
f4c556ac 1334 if (PL_doextract) {
bf4acbe4 1335#endif
6224f72b 1336 find_beginning();
f4c556ac
GS		 1337 if (cddir && PerlDir_chdir(cddir) < 0)
1338 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1339
1340 }
6224f72b 1341
3280af22
NIS		 1342 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1343 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1344 CvUNIQUE_on(PL_compcv);
1345
1346 PL_comppad = newAV();
1347 av_push(PL_comppad, Nullsv);
1348 PL_curpad = AvARRAY(PL_comppad);
1349 PL_comppad_name = newAV();
1350 PL_comppad_name_fill = 0;
1351 PL_min_intro_pending = 0;
1352 PL_padix = 0;
4d1ff10f 1353#ifdef USE_5005THREADS
79cb57f6 1354 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
533c011a
NIS		 1355 PL_curpad[0] = (SV*)newAV();
1356 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1357 CvOWNER(PL_compcv) = 0;
1358 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1359 MUTEX_INIT(CvMUTEXP(PL_compcv));
4d1ff10f 1360#endif /* USE_5005THREADS */
6224f72b
GS		 1361
1362 comppadlist = newAV();
1363 AvREAL_off(comppadlist);
3280af22
NIS		 1364 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1365 av_store(comppadlist, 1, (SV*)PL_comppad);
1366 CvPADLIST(PL_compcv) = comppadlist;
6224f72b 1367
0c4f7ff0 1368 boot_core_PerlIO();
6224f72b 1369 boot_core_UNIVERSAL();
9a34ef1d 1370#ifndef PERL_MICRO
09bef843 1371 boot_core_xsutils();
9a34ef1d 1372#endif
6224f72b
GS		 1373
1374 if (xsinit)
acfe0abc 1375 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 1376#ifndef PERL_MICRO
ed79a026 1377#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
c5be433b 1378 init_os_extras();
6224f72b 1379#endif
64ca3a65 1380#endif
6224f72b 1381
29209bc5 1382#ifdef USE_SOCKS
1b9c9cf5
DH		 1383# ifdef HAS_SOCKS5_INIT
1384 socks5_init(argv[0]);
1385# else
29209bc5 1386 SOCKSinit(argv[0]);
1b9c9cf5 1387# endif
ac27b0f5 1388#endif
29209bc5 1389
6224f72b
GS		 1390 init_predump_symbols();
1391 /* init_postdump_symbols not currently designed to be called */
1392 /* more than once (ENV isn't cleared first, for example) */
1393 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 1394 if (!PL_do_undump)
6224f72b
GS		 1395 init_postdump_symbols(argc,argv,env);
1396
1397 init_lexer();
1398
1399 /* now parse the script */
1400
1401 SETERRNO(0,SS$_NORMAL);
3280af22 1402 PL_error_count = 0;
bf4acbe4
GS		 1403#ifdef MACOS_TRADITIONAL
1404 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1405 if (PL_minus_c)
1406 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1407 else {
1408 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1409 MacPerl_MPWFileName(PL_origfilename));
1410 }
1411 }
1412#else
3280af22
NIS		 1413 if (yyparse() || PL_error_count) {
1414 if (PL_minus_c)
cea2e8a9 1415 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 1416 else {
cea2e8a9 1417 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 1418 PL_origfilename);
6224f72b
GS		 1419 }
1420 }
bf4acbe4 1421#endif
57843af0 1422 CopLINE_set(PL_curcop, 0);
3280af22
NIS		 1423 PL_curstash = PL_defstash;
1424 PL_preprocess = FALSE;
1425 if (PL_e_script) {
1426 SvREFCNT_dec(PL_e_script);
1427 PL_e_script = Nullsv;
6224f72b
GS		 1428 }
1429
8bfdd7d9
HS		 1430/*
1431 Not sure that this is still the right place to do this now that we
1432 no longer use PL_nrs. HVDS 2001/09/09
1433*/
864dbfa3 1434 sv_setsv(get_sv("/", TRUE), PL_rs);
8bfdd7d9 1435
3280af22 1436 if (PL_do_undump)
6224f72b
GS		 1437 my_unexec();
1438
57843af0
GS		 1439 if (isWARN_ONCE) {
1440 SAVECOPFILE(PL_curcop);
1441 SAVECOPLINE(PL_curcop);
3280af22 1442 gv_check(PL_defstash);
57843af0 1443 }
6224f72b
GS		 1444
1445 LEAVE;
1446 FREETMPS;
1447
1448#ifdef MYMALLOC
1449 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1450 dump_mstats("after compilation:");
1451#endif
1452
1453 ENTER;
3280af22 1454 PL_restartop = 0;
312caa8e 1455 return NULL;
6224f72b
GS		 1456}
1457
954c1994
GS		 1458/*
1459=for apidoc perl_run
1460
1461Tells a Perl interpreter to run. See L<perlembed>.
1462
1463=cut
1464*/
1465
6224f72b 1466int
0cb96387 1467perl_run(pTHXx)
6224f72b 1468{
6224f72b 1469 I32 oldscope;
14dd3ad8 1470 int ret = 0;
db36c5a1 1471 dJMPENV;
4d1ff10f 1472#ifdef USE_5005THREADS
cea2e8a9
GS		 1473 dTHX;
1474#endif
6224f72b 1475
3280af22 1476 oldscope = PL_scopestack_ix;
6224f72b 1477
14dd3ad8 1478#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1479 redo_body:
14dd3ad8
GS		 1480 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1481#else
1482 JMPENV_PUSH(ret);
1483#endif
6224f72b
GS		 1484 switch (ret) {
1485 case 1:
1486 cxstack_ix = -1; /* start context stack again */
312caa8e 1487 goto redo_body;
14dd3ad8
GS		 1488 case 0: /* normal completion */
1489#ifndef PERL_FLEXIBLE_EXCEPTIONS
1490 redo_body:
1491 run_body(oldscope);
1492#endif
1493 /* FALL THROUGH */
1494 case 2: /* my_exit() */
3280af22 1495 while (PL_scopestack_ix > oldscope)
6224f72b
GS		 1496 LEAVE;
1497 FREETMPS;
3280af22 1498 PL_curstash = PL_defstash;
31d77e54
AB		 1499 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
1500 PL_endav && !PL_minus_c)
1501 call_list(oldscope, PL_endav);
6224f72b
GS		 1502#ifdef MYMALLOC
1503 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1504 dump_mstats("after execution: ");
1505#endif
14dd3ad8
GS		 1506 ret = STATUS_NATIVE_EXPORT;
1507 break;
6224f72b 1508 case 3:
312caa8e
CS		 1509 if (PL_restartop) {
1510 POPSTACK_TO(PL_mainstack);
1511 goto redo_body;
6224f72b 1512 }
bf49b057 1513 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 1514 FREETMPS;
14dd3ad8
GS		 1515 ret = 1;
1516 break;
6224f72b
GS		 1517 }
1518
14dd3ad8
GS		 1519 JMPENV_POP;
1520 return ret;
312caa8e
CS		 1521}
1522
14dd3ad8 1523#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1524STATIC void *
14dd3ad8 1525S_vrun_body(pTHX_ va_list args)
312caa8e 1526{
312caa8e
CS		 1527 I32 oldscope = va_arg(args, I32);
1528
14dd3ad8
GS		 1529 return run_body(oldscope);
1530}
1531#endif
1532
1533
1534STATIC void *
1535S_run_body(pTHX_ I32 oldscope)
1536{
6224f72b 1537 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 1538 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 1539
3280af22 1540 if (!PL_restartop) {
6224f72b
GS		 1541 DEBUG_x(dump_all());
1542 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
b900a521
JH		 1543 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1544 PTR2UV(thr)));
6224f72b 1545
3280af22 1546 if (PL_minus_c) {
bf4acbe4
GS		 1547#ifdef MACOS_TRADITIONAL
1548 PerlIO_printf(Perl_error_log, "%s syntax OK\n", MacPerl_MPWFileName(PL_origfilename));
1549#else
bf49b057 1550 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
bf4acbe4 1551#endif
6224f72b
GS		 1552 my_exit(0);
1553 }
3280af22 1554 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 1555 sv_setiv(PL_DBsingle, 1);
3280af22
NIS		 1556 if (PL_initav)
1557 call_list(oldscope, PL_initav);
6224f72b
GS		 1558 }
1559
1560 /* do it */
1561
3280af22 1562 if (PL_restartop) {
533c011a 1563 PL_op = PL_restartop;
3280af22 1564 PL_restartop = 0;
cea2e8a9 1565 CALLRUNOPS(aTHX);
6224f72b 1566 }
3280af22
NIS		 1567 else if (PL_main_start) {
1568 CvDEPTH(PL_main_cv) = 1;
533c011a 1569 PL_op = PL_main_start;
cea2e8a9 1570 CALLRUNOPS(aTHX);
6224f72b
GS		 1571 }
1572
f6b3007c
JH		 1573 my_exit(0);
1574 /* NOTREACHED */
312caa8e 1575 return NULL;
6224f72b
GS		 1576}
1577
954c1994
GS		 1578/*
1579=for apidoc p||get_sv
1580
1581Returns the SV of the specified Perl scalar. If C<create> is set and the
1582Perl variable does not exist then it will be created. If C<create> is not
1583set and the variable does not exist then NULL is returned.
1584
1585=cut
1586*/
1587
6224f72b 1588SV*
864dbfa3 1589Perl_get_sv(pTHX_ const char *name, I32 create)
6224f72b
GS		 1590{
1591 GV *gv;
4d1ff10f 1592#ifdef USE_5005THREADS
6224f72b
GS		 1593 if (name[1] == '\0' && !isALPHA(name[0])) {
1594 PADOFFSET tmp = find_threadsv(name);
411caa50 1595 if (tmp != NOT_IN_PAD)
6224f72b 1596 return THREADSV(tmp);
6224f72b 1597 }
4d1ff10f 1598#endif /* USE_5005THREADS */
6224f72b
GS		 1599 gv = gv_fetchpv(name, create, SVt_PV);
1600 if (gv)
1601 return GvSV(gv);
1602 return Nullsv;
1603}
1604
954c1994
GS		 1605/*
1606=for apidoc p||get_av
1607
1608Returns the AV of the specified Perl array. If C<create> is set and the
1609Perl variable does not exist then it will be created. If C<create> is not
1610set and the variable does not exist then NULL is returned.
1611
1612=cut
1613*/
1614
6224f72b 1615AV*
864dbfa3 1616Perl_get_av(pTHX_ const char *name, I32 create)
6224f72b
GS		 1617{
1618 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1619 if (create)
1620 return GvAVn(gv);
1621 if (gv)
1622 return GvAV(gv);
1623 return Nullav;
1624}
1625
954c1994
GS		 1626/*
1627=for apidoc p||get_hv
1628
1629Returns the HV of the specified Perl hash. If C<create> is set and the
1630Perl variable does not exist then it will be created. If C<create> is not
1631set and the variable does not exist then NULL is returned.
1632
1633=cut
1634*/
1635
6224f72b 1636HV*
864dbfa3 1637Perl_get_hv(pTHX_ const char *name, I32 create)
6224f72b 1638{
a0d0e21e
LW		 1639 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1640 if (create)
1641 return GvHVn(gv);
1642 if (gv)
1643 return GvHV(gv);
1644 return Nullhv;
1645}
1646
954c1994
GS		 1647/*
1648=for apidoc p||get_cv
1649
1650Returns the CV of the specified Perl subroutine. If C<create> is set and
1651the Perl subroutine does not exist then it will be declared (which has the
1652same effect as saying C<sub name;>). If C<create> is not set and the
1653subroutine does not exist then NULL is returned.
1654
1655=cut
1656*/
1657
a0d0e21e 1658CV*
864dbfa3 1659Perl_get_cv(pTHX_ const char *name, I32 create)
a0d0e21e
LW		 1660{
1661 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
b099ddc0 1662 /* XXX unsafe for threads if eval_owner isn't held */
f6ec51f7
GS		 1663 /* XXX this is probably not what they think they're getting.
1664 * It has the same effect as "sub name;", i.e. just a forward
1665 * declaration! */
8ebc5c01 1666 if (create && !GvCVu(gv))
774d564b 1667 return newSUB(start_subparse(FALSE, 0),
a0d0e21e 1668 newSVOP(OP_CONST, 0, newSVpv(name,0)),
4633a7c4 1669 Nullop,
a0d0e21e
LW		 1670 Nullop);
1671 if (gv)
8ebc5c01 1672 return GvCVu(gv);
a0d0e21e
LW		 1673 return Nullcv;
1674}
1675
79072805
LW		 1676/* Be sure to refetch the stack pointer after calling these routines. */
1677
954c1994
GS		 1678/*
1679=for apidoc p||call_argv
1680
1681Performs a callback to the specified Perl sub. See L<perlcall>.
1682
1683=cut
1684*/
1685
a0d0e21e 1686I32
864dbfa3 1687Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 1688
8ac85365
NIS		 1689 /* See G_* flags in cop.h */
1690 /* null terminated arg list */
8990e307 1691{
a0d0e21e 1692 dSP;
8990e307 1693
924508f0 1694 PUSHMARK(SP);
a0d0e21e 1695 if (argv) {
8990e307 1696 while (*argv) {
a0d0e21e 1697 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
8990e307
LW		 1698 argv++;
1699 }
a0d0e21e 1700 PUTBACK;
8990e307 1701 }
864dbfa3 1702 return call_pv(sub_name, flags);
8990e307
LW		 1703}
1704
954c1994
GS		 1705/*
1706=for apidoc p||call_pv
1707
1708Performs a callback to the specified Perl sub. See L<perlcall>.
1709
1710=cut
1711*/
1712
a0d0e21e 1713I32
864dbfa3 1714Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS		 1715 /* name of the subroutine */
1716 /* See G_* flags in cop.h */
a0d0e21e 1717{
864dbfa3 1718 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
a0d0e21e
LW		 1719}
1720
954c1994
GS		 1721/*
1722=for apidoc p||call_method
1723
1724Performs a callback to the specified Perl method. The blessed object must
1725be on the stack. See L<perlcall>.
1726
1727=cut
1728*/
1729
a0d0e21e 1730I32
864dbfa3 1731Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS		 1732 /* name of the subroutine */
1733 /* See G_* flags in cop.h */
a0d0e21e 1734{
968b3946 1735 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
a0d0e21e
LW		 1736}
1737
1738/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS		 1739/*
1740=for apidoc p||call_sv
1741
1742Performs a callback to the Perl sub whose name is in the SV. See
1743L<perlcall>.
1744
1745=cut
1746*/
1747
a0d0e21e 1748I32
864dbfa3 1749Perl_call_sv(pTHX_ SV *sv, I32 flags)
8ac85365 1750 /* See G_* flags in cop.h */
a0d0e21e 1751{
924508f0 1752 dSP;
a0d0e21e 1753 LOGOP myop; /* fake syntax tree node */
968b3946 1754 UNOP method_op;
aa689395 1755 I32 oldmark;
13689cfe 1756 volatile I32 retval = 0;
a0d0e21e 1757 I32 oldscope;
54310121 1758 bool oldcatch = CATCH_GET;
6224f72b 1759 int ret;
533c011a 1760 OP* oldop = PL_op;
db36c5a1 1761 dJMPENV;
1e422769 1762
a0d0e21e
LW		 1763 if (flags & G_DISCARD) {
1764 ENTER;
1765 SAVETMPS;
1766 }
1767
aa689395 1768 Zero(&myop, 1, LOGOP);
54310121 1769 myop.op_next = Nullop;
f51d4af5 1770 if (!(flags & G_NOARGS))
aa689395 1771 myop.op_flags |= OPf_STACKED;
54310121 1772 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1773 (flags & G_ARRAY) ? OPf_WANT_LIST :
1774 OPf_WANT_SCALAR);
462e5cf6 1775 SAVEOP();
533c011a 1776 PL_op = (OP*)&myop;
aa689395 1777
3280af22
NIS		 1778 EXTEND(PL_stack_sp, 1);
1779 *++PL_stack_sp = sv;
aa689395 1780 oldmark = TOPMARK;
3280af22 1781 oldscope = PL_scopestack_ix;
a0d0e21e 1782
3280af22 1783 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 1784 /* Handle first BEGIN of -d. */
3280af22 1785 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24 1786 /* Try harder, since this may have been a sighandler, thus
1787 * curstash may be meaningless. */
3280af22 1788 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
491527d0 1789 && !(flags & G_NODEBUG))
533c011a 1790 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 1791
968b3946
GS		 1792 if (flags & G_METHOD) {
1793 Zero(&method_op, 1, UNOP);
1794 method_op.op_next = PL_op;
1795 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1796 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
f39d0b86 1797 PL_op = (OP*)&method_op;
968b3946
GS		 1798 }
1799
312caa8e 1800 if (!(flags & G_EVAL)) {
0cdb2077 1801 CATCH_SET(TRUE);
14dd3ad8 1802 call_body((OP*)&myop, FALSE);
312caa8e 1803 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 1804 CATCH_SET(oldcatch);
312caa8e
CS		 1805 }
1806 else {
d78bda3d 1807 myop.op_other = (OP*)&myop;
3280af22 1808 PL_markstack_ptr--;
4633a7c4
LW		 1809 /* we're trying to emulate pp_entertry() here */
1810 {
c09156bb 1811 register PERL_CONTEXT *cx;
54310121 1812 I32 gimme = GIMME_V;
ac27b0f5 1813
4633a7c4
LW		 1814 ENTER;
1815 SAVETMPS;
ac27b0f5 1816
968b3946 1817 push_return(Nullop);
1d76a5c3 1818 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
4633a7c4 1819 PUSHEVAL(cx, 0, 0);
533c011a 1820 PL_eval_root = PL_op; /* Only needed so that goto works right. */
ac27b0f5 1821
faef0170 1822 PL_in_eval = EVAL_INEVAL;
4633a7c4 1823 if (flags & G_KEEPERR)
faef0170 1824 PL_in_eval |= EVAL_KEEPERR;
4633a7c4 1825 else
38a03e6e 1826 sv_setpv(ERRSV,"");
4633a7c4 1827 }
3280af22 1828 PL_markstack_ptr++;
a0d0e21e 1829
14dd3ad8
GS		 1830#ifdef PERL_FLEXIBLE_EXCEPTIONS
1831 redo_body:
1832 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
db36c5a1 1833 (OP*)&myop, FALSE);
14dd3ad8
GS		 1834#else
1835 JMPENV_PUSH(ret);
1836#endif
6224f72b
GS		 1837 switch (ret) {
1838 case 0:
14dd3ad8
GS		 1839#ifndef PERL_FLEXIBLE_EXCEPTIONS
1840 redo_body:
1841 call_body((OP*)&myop, FALSE);
1842#endif
312caa8e
CS		 1843 retval = PL_stack_sp - (PL_stack_base + oldmark);
1844 if (!(flags & G_KEEPERR))
1845 sv_setpv(ERRSV,"");
a0d0e21e 1846 break;
6224f72b 1847 case 1:
f86702cc 1848 STATUS_ALL_FAILURE;
a0d0e21e 1849 /* FALL THROUGH */
6224f72b 1850 case 2:
a0d0e21e 1851 /* my_exit() was called */
3280af22 1852 PL_curstash = PL_defstash;
a0d0e21e 1853 FREETMPS;
14dd3ad8 1854 JMPENV_POP;
cc3604b1 1855 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 1856 Perl_croak(aTHX_ "Callback called exit");
f86702cc 1857 my_exit_jump();
a0d0e21e 1858 /* NOTREACHED */
6224f72b 1859 case 3:
3280af22 1860 if (PL_restartop) {
533c011a 1861 PL_op = PL_restartop;
3280af22 1862 PL_restartop = 0;
312caa8e 1863 goto redo_body;
a0d0e21e 1864 }
3280af22 1865 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW		 1866 if (flags & G_ARRAY)
1867 retval = 0;
1868 else {
1869 retval = 1;
3280af22 1870 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 1871 }
312caa8e 1872 break;
a0d0e21e 1873 }
a0d0e21e 1874
3280af22 1875 if (PL_scopestack_ix > oldscope) {
a0a2876f
LW		 1876 SV **newsp;
1877 PMOP *newpm;
1878 I32 gimme;
c09156bb 1879 register PERL_CONTEXT *cx;
a0a2876f
LW		 1880 I32 optype;
1881
1882 POPBLOCK(cx,newpm);
1883 POPEVAL(cx);
1884 pop_return();
3280af22 1885 PL_curpm = newpm;
a0a2876f 1886 LEAVE;
a0d0e21e 1887 }
14dd3ad8 1888 JMPENV_POP;
a0d0e21e 1889 }
1e422769 1890
a0d0e21e 1891 if (flags & G_DISCARD) {
3280af22 1892 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW		 1893 retval = 0;
1894 FREETMPS;
1895 LEAVE;
1896 }
533c011a 1897 PL_op = oldop;
a0d0e21e
LW		 1898 return retval;
1899}
1900
14dd3ad8 1901#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1902STATIC void *
14dd3ad8 1903S_vcall_body(pTHX_ va_list args)
312caa8e
CS		 1904{
1905 OP *myop = va_arg(args, OP*);
1906 int is_eval = va_arg(args, int);
1907
14dd3ad8 1908 call_body(myop, is_eval);
312caa8e
CS		 1909 return NULL;
1910}
14dd3ad8 1911#endif
312caa8e
CS		 1912
1913STATIC void
14dd3ad8 1914S_call_body(pTHX_ OP *myop, int is_eval)
312caa8e 1915{
312caa8e
CS		 1916 if (PL_op == myop) {
1917 if (is_eval)
f807eda9 1918 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
312caa8e 1919 else
f807eda9 1920 PL_op = Perl_pp_entersub(aTHX); /* this does */
312caa8e
CS		 1921 }
1922 if (PL_op)
cea2e8a9 1923 CALLRUNOPS(aTHX);
312caa8e
CS		 1924}
1925
6e72f9df 1926/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 1927
954c1994
GS		 1928/*
1929=for apidoc p||eval_sv
1930
1931Tells Perl to C<eval> the string in the SV.
1932
1933=cut
1934*/
1935
a0d0e21e 1936I32
864dbfa3 1937Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 1938
8ac85365 1939 /* See G_* flags in cop.h */
a0d0e21e 1940{
924508f0 1941 dSP;
a0d0e21e 1942 UNOP myop; /* fake syntax tree node */
8fa7f367 1943 volatile I32 oldmark = SP - PL_stack_base;
13689cfe 1944 volatile I32 retval = 0;
4633a7c4 1945 I32 oldscope;
6224f72b 1946 int ret;
533c011a 1947 OP* oldop = PL_op;
db36c5a1 1948 dJMPENV;
84902520 1949
4633a7c4
LW		 1950 if (flags & G_DISCARD) {
1951 ENTER;
1952 SAVETMPS;
1953 }
1954
462e5cf6 1955 SAVEOP();
533c011a
NIS		 1956 PL_op = (OP*)&myop;
1957 Zero(PL_op, 1, UNOP);
3280af22
NIS		 1958 EXTEND(PL_stack_sp, 1);
1959 *++PL_stack_sp = sv;
1960 oldscope = PL_scopestack_ix;
79072805 1961
4633a7c4
LW		 1962 if (!(flags & G_NOARGS))
1963 myop.op_flags = OPf_STACKED;
79072805 1964 myop.op_next = Nullop;
6e72f9df 1965 myop.op_type = OP_ENTEREVAL;
54310121 1966 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1967 (flags & G_ARRAY) ? OPf_WANT_LIST :
1968 OPf_WANT_SCALAR);
6e72f9df 1969 if (flags & G_KEEPERR)
1970 myop.op_flags |= OPf_SPECIAL;
4633a7c4 1971
14dd3ad8 1972#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1973 redo_body:
14dd3ad8 1974 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
db36c5a1 1975 (OP*)&myop, TRUE);
14dd3ad8
GS		 1976#else
1977 JMPENV_PUSH(ret);
1978#endif
6224f72b
GS		 1979 switch (ret) {
1980 case 0:
14dd3ad8
GS		 1981#ifndef PERL_FLEXIBLE_EXCEPTIONS
1982 redo_body:
1983 call_body((OP*)&myop,TRUE);
1984#endif
312caa8e
CS		 1985 retval = PL_stack_sp - (PL_stack_base + oldmark);
1986 if (!(flags & G_KEEPERR))
1987 sv_setpv(ERRSV,"");
4633a7c4 1988 break;
6224f72b 1989 case 1:
f86702cc 1990 STATUS_ALL_FAILURE;
4633a7c4 1991 /* FALL THROUGH */
6224f72b 1992 case 2:
4633a7c4 1993 /* my_exit() was called */
3280af22 1994 PL_curstash = PL_defstash;
4633a7c4 1995 FREETMPS;
14dd3ad8 1996 JMPENV_POP;
cc3604b1 1997 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 1998 Perl_croak(aTHX_ "Callback called exit");
f86702cc 1999 my_exit_jump();
4633a7c4 2000 /* NOTREACHED */
6224f72b 2001 case 3:
3280af22 2002 if (PL_restartop) {
533c011a 2003 PL_op = PL_restartop;
3280af22 2004 PL_restartop = 0;
312caa8e 2005 goto redo_body;
4633a7c4 2006 }
3280af22 2007 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW		 2008 if (flags & G_ARRAY)
2009 retval = 0;
2010 else {
2011 retval = 1;
3280af22 2012 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2013 }
312caa8e 2014 break;
4633a7c4
LW		 2015 }
2016
14dd3ad8 2017 JMPENV_POP;
4633a7c4 2018 if (flags & G_DISCARD) {
3280af22 2019 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW		 2020 retval = 0;
2021 FREETMPS;
2022 LEAVE;
2023 }
533c011a 2024 PL_op = oldop;
4633a7c4
LW		 2025 return retval;
2026}
2027
954c1994
GS		 2028/*
2029=for apidoc p||eval_pv
2030
2031Tells Perl to C<eval> the given string and return an SV* result.
2032
2033=cut
2034*/
2035
137443ea 2036SV*
864dbfa3 2037Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2038{
2039 dSP;
2040 SV* sv = newSVpv(p, 0);
2041
864dbfa3 2042 eval_sv(sv, G_SCALAR);
137443ea 2043 SvREFCNT_dec(sv);
2044
2045 SPAGAIN;
2046 sv = POPs;
2047 PUTBACK;
2048
2d8e6c8d
GS		 2049 if (croak_on_error && SvTRUE(ERRSV)) {
2050 STRLEN n_a;
cea2e8a9 2051 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
2d8e6c8d 2052 }
137443ea 2053
2054 return sv;
2055}
2056
4633a7c4
LW		 2057/* Require a module. */
2058
954c1994
GS		 2059/*
2060=for apidoc p||require_pv
2061
7d3fb230
BS		 2062Tells Perl to C<require> the file named by the string argument. It is
2063analogous to the Perl code C<eval "require '$file'">. It's even
2064implemented that way; consider using Perl_load_module instead.
954c1994 2065
7d3fb230 2066=cut */
954c1994 2067
4633a7c4 2068void
864dbfa3 2069Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2070{
d3acc0f7
JP		 2071 SV* sv;
2072 dSP;
e788e7d3 2073 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7
JP		 2074 PUTBACK;
2075 sv = sv_newmortal();
4633a7c4
LW		 2076 sv_setpv(sv, "require '");
2077 sv_catpv(sv, pv);
2078 sv_catpv(sv, "'");
864dbfa3 2079 eval_sv(sv, G_DISCARD);
d3acc0f7
JP		 2080 SPAGAIN;
2081 POPSTACK;
79072805
LW		 2082}
2083
79072805 2084void
864dbfa3 2085Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
79072805
LW		 2086{
2087 register GV *gv;
2088
155aba94 2089 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
14befaf4 2090 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
79072805
LW		 2091}
2092
76e3520e 2093STATIC void
cea2e8a9 2094S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
4633a7c4 2095{
ab821d7f 2096 /* This message really ought to be max 23 lines.
75c72d73 2097 * Removed -h because the user already knows that option. Others? */
fb73857a 2098
76e3520e 2099 static char *usage_msg[] = {
fb73857a 2100"-0[octal] specify record separator (\\0, if no argument)",
2101"-a autosplit mode with -n or -p (splits $_ into @F)",
46487f74 2102"-C enable native wide character system interfaces",
1950ee41 2103"-c check syntax only (runs BEGIN and CHECK blocks)",
aac3bd0d
GS		 2104"-d[:debugger] run program under debugger",
2105"-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2106"-e 'command' one line of program (several -e's allowed, omit programfile)",
2107"-F/pattern/ split() pattern for -a switch (//'s are optional)",
2108"-i[extension] edit <> files in place (makes backup if extension supplied)",
2109"-Idirectory specify @INC/#include directory (several -I's allowed)",
fb73857a 2110"-l[octal] enable line ending processing, specifies line terminator",
aac3bd0d
GS		 2111"-[mM][-]module execute `use/no module...' before executing program",
2112"-n assume 'while (<>) { ... }' loop around program",
2113"-p assume loop like -n but print line also, like sed",
2114"-P run program through C preprocessor before compilation",
2115"-s enable rudimentary parsing for switches after programfile",
2116"-S look for programfile using PATH environment variable",
2117"-T enable tainting checks",
2118"-u dump core after parsing program",
fb73857a 2119"-U allow unsafe operations",
aac3bd0d
GS		 2120"-v print version, subversion (includes VERY IMPORTANT perl info)",
2121"-V[:variable] print configuration summary (or a single Config.pm variable)",
2122"-w enable many useful warnings (RECOMMENDED)",
3c0facb2
GS		 2123"-W enable all warnings",
2124"-X disable all warnings",
fb73857a 2125"-x[directory] strip off text before #!perl line and perhaps cd to directory",
2126"\n",
2127NULL
2128};
76e3520e 2129 char **p = usage_msg;
fb73857a 2130
b0e47665
GS		 2131 PerlIO_printf(PerlIO_stdout(),
2132 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2133 name);
fb73857a 2134 while (*p)
b0e47665 2135 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
4633a7c4
LW		 2136}
2137
79072805
LW		 2138/* This routine handles any switches that can be given during run */
2139
2140char *
864dbfa3 2141Perl_moreswitches(pTHX_ char *s)
79072805 2142{
ba210ebe 2143 STRLEN numlen;
c07a80fd 2144 U32 rschar;
79072805
LW		 2145
2146 switch (*s) {
2147 case '0':
a863c7d1 2148 {
53305cf1
NC		 2149 I32 flags = 0;
2150 numlen = 4;
2151 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
8bfdd7d9 2152 SvREFCNT_dec(PL_rs);
c07a80fd 2153 if (rschar & ~((U8)~0))
8bfdd7d9 2154 PL_rs = &PL_sv_undef;
c07a80fd 2155 else if (!rschar && numlen >= 2)
8bfdd7d9 2156 PL_rs = newSVpvn("", 0);
c07a80fd 2157 else {
2158 char ch = rschar;
8bfdd7d9 2159 PL_rs = newSVpvn(&ch, 1);
79072805
LW		 2160 }
2161 return s + numlen;
a863c7d1 2162 }
46487f74
GS		 2163 case 'C':
2164 PL_widesyscalls = TRUE;
2165 s++;
2166 return s;
2304df62 2167 case 'F':
3280af22
NIS		 2168 PL_minus_F = TRUE;
2169 PL_splitstr = savepv(s + 1);
2304df62
AD		 2170 s += strlen(s);
2171 return s;
79072805 2172 case 'a':
3280af22 2173 PL_minus_a = TRUE;
79072805
LW		 2174 s++;
2175 return s;
2176 case 'c':
3280af22 2177 PL_minus_c = TRUE;
79072805
LW		 2178 s++;
2179 return s;
2180 case 'd':
bbce6d69 2181 forbid_setid("-d");
4633a7c4 2182 s++;
70c94a19
RR		 2183 /* The following permits -d:Mod to accepts arguments following an =
2184 in the fashion that -MSome::Mod does. */
2185 if (*s == ':' || *s == '=') {
2186 char *start;
2187 SV *sv;
2188 sv = newSVpv("use Devel::", 0);
2189 start = ++s;
2190 /* We now allow -d:Module=Foo,Bar */
2191 while(isALNUM(*s) || *s==':') ++s;
2192 if (*s != '=')
2193 sv_catpv(sv, start);
2194 else {
2195 sv_catpvn(sv, start, s-start);
2196 sv_catpv(sv, " split(/,/,q{");
2197 sv_catpv(sv, ++s);
2198 sv_catpv(sv, "})");
2199 }
4633a7c4 2200 s += strlen(s);
70c94a19 2201 my_setenv("PERL5DB", SvPV(sv, PL_na));
4633a7c4 2202 }
ed094faf 2203 if (!PL_perldb) {
3280af22 2204 PL_perldb = PERLDB_ALL;
a0d0e21e 2205 init_debugger();
ed094faf 2206 }
79072805
LW		 2207 return s;
2208 case 'D':
0453d815 2209 {
79072805 2210#ifdef DEBUGGING
bbce6d69 2211 forbid_setid("-D");
79072805 2212 if (isALPHA(s[1])) {
04932ac8
DM		 2213 /* if adding extra options, remember to update DEBUG_MASK */
2214 static char debopts[] = "psltocPmfrxuLHXDSTR";
79072805
LW		 2215 char *d;
2216
93a17b20 2217 for (s++; *s && (d = strchr(debopts,*s)); s++)
3280af22 2218 PL_debug |= 1 << (d - debopts);
79072805
LW		 2219 }
2220 else {
3280af22 2221 PL_debug = atoi(s+1);
79072805
LW		 2222 for (s++; isDIGIT(*s); s++) ;
2223 }
aea4f609 2224 PL_debug |= DEBUG_TOP_FLAG;
79072805 2225#else
0453d815
PM		 2226 if (ckWARN_d(WARN_DEBUGGING))
2227 Perl_warner(aTHX_ WARN_DEBUGGING,
2228 "Recompile perl with -DDEBUGGING to use -D switch\n");
a0d0e21e 2229 for (s++; isALNUM(*s); s++) ;
79072805
LW		 2230#endif
2231 /*SUPPRESS 530*/
2232 return s;
0453d815 2233 }
4633a7c4 2234 case 'h':
ac27b0f5 2235 usage(PL_origargv[0]);
6ad3d225 2236 PerlProc_exit(0);
79072805 2237 case 'i':
3280af22
NIS		 2238 if (PL_inplace)
2239 Safefree(PL_inplace);
2240 PL_inplace = savepv(s+1);
79072805 2241 /*SUPPRESS 530*/
3280af22 2242 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
7b8d334a 2243 if (*s) {
fb73857a 2244 *s++ = '\0';
7b8d334a
GS		 2245 if (*s == '-') /* Additional switches on #! line. */
2246 s++;
2247 }
fb73857a 2248 return s;
2249 case 'I': /* -I handled both here and in parse_perl() */
bbce6d69 2250 forbid_setid("-I");
fb73857a 2251 ++s;
2252 while (*s && isSPACE(*s))
2253 ++s;
2254 if (*s) {
774d564b 2255 char *e, *p;
0df16ed7
GS		 2256 p = s;
2257 /* ignore trailing spaces (possibly followed by other switches) */
2258 do {
2259 for (e = p; *e && !isSPACE(*e); e++) ;
2260 p = e;
2261 while (isSPACE(*p))
2262 p++;
2263 } while (*p && *p != '-');
2264 e = savepvn(s, e-s);
9c8a64f0 2265 incpush(e, TRUE, TRUE);
0df16ed7
GS		 2266 Safefree(e);
2267 s = p;
2268 if (*s == '-')
2269 s++;
79072805
LW		 2270 }
2271 else
a67e862a 2272 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 2273 return s;
79072805 2274 case 'l':
3280af22 2275 PL_minus_l = TRUE;
79072805 2276 s++;
7889fe52
NIS		 2277 if (PL_ors_sv) {
2278 SvREFCNT_dec(PL_ors_sv);
2279 PL_ors_sv = Nullsv;
2280 }
79072805 2281 if (isDIGIT(*s)) {
53305cf1 2282 I32 flags = 0;
7889fe52 2283 PL_ors_sv = newSVpvn("\n",1);
53305cf1
NC		 2284 numlen = 3 + (*s == '0');
2285 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW		 2286 s += numlen;
2287 }
2288 else {
8bfdd7d9 2289 if (RsPARA(PL_rs)) {
7889fe52
NIS		 2290 PL_ors_sv = newSVpvn("\n\n",2);
2291 }
2292 else {
8bfdd7d9 2293 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 2294 }
79072805
LW		 2295 }
2296 return s;
1a30305b 2297 case 'M':
bbce6d69 2298 forbid_setid("-M"); /* XXX ? */
1a30305b 2299 /* FALL THROUGH */
2300 case 'm':
bbce6d69 2301 forbid_setid("-m"); /* XXX ? */
1a30305b 2302 if (*++s) {
a5f75d66 2303 char *start;
11343788 2304 SV *sv;
a5f75d66
AD		 2305 char *use = "use ";
2306 /* -M-foo == 'no foo' */
2307 if (*s == '-') { use = "no "; ++s; }
11343788 2308 sv = newSVpv(use,0);
a5f75d66 2309 start = s;
1a30305b 2310 /* We allow -M'Module qw(Foo Bar)' */
c07a80fd 2311 while(isALNUM(*s) || *s==':') ++s;
2312 if (*s != '=') {
11343788 2313 sv_catpv(sv, start);
c07a80fd 2314 if (*(start-1) == 'm') {
2315 if (*s != '\0')
cea2e8a9 2316 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
11343788 2317 sv_catpv( sv, " ()");
c07a80fd 2318 }
2319 } else {
6df41af2 2320 if (s == start)
be98fb35
GS		 2321 Perl_croak(aTHX_ "Module name required with -%c option",
2322 s[-1]);
11343788
MB		 2323 sv_catpvn(sv, start, s-start);
2324 sv_catpv(sv, " split(/,/,q{");
2325 sv_catpv(sv, ++s);
2326 sv_catpv(sv, "})");
c07a80fd 2327 }
1a30305b 2328 s += strlen(s);
5c831c24 2329 if (!PL_preambleav)
3280af22
NIS		 2330 PL_preambleav = newAV();
2331 av_push(PL_preambleav, sv);
1a30305b 2332 }
2333 else
cea2e8a9 2334 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
1a30305b 2335 return s;
79072805 2336 case 'n':
3280af22 2337 PL_minus_n = TRUE;
79072805
LW		 2338 s++;
2339 return s;
2340 case 'p':
3280af22 2341 PL_minus_p = TRUE;
79072805
LW		 2342 s++;
2343 return s;
2344 case 's':
bbce6d69 2345 forbid_setid("-s");
3280af22 2346 PL_doswitches = TRUE;
79072805
LW		 2347 s++;
2348 return s;
463ee0b2 2349 case 'T':
3280af22 2350 if (!PL_tainting)
cea2e8a9 2351 Perl_croak(aTHX_ "Too late for \"-T\" option");
463ee0b2
LW		 2352 s++;
2353 return s;
79072805 2354 case 'u':
bf4acbe4
GS		 2355#ifdef MACOS_TRADITIONAL
2356 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2357#endif
3280af22 2358 PL_do_undump = TRUE;
79072805
LW		 2359 s++;
2360 return s;
2361 case 'U':
3280af22 2362 PL_unsafe = TRUE;
79072805
LW		 2363 s++;
2364 return s;
2365 case 'v':
8e9464f1 2366#if !defined(DGUX)
b0e47665 2367 PerlIO_printf(PerlIO_stdout(),
d2560b70 2368 Perl_form(aTHX_ "\nThis is perl, v%"VDf" built for %s",
b0e47665 2369 PL_patchlevel, ARCHNAME));
8e9464f1
JH		 2370#else /* DGUX */
2371/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
2372 PerlIO_printf(PerlIO_stdout(),
2373 Perl_form(aTHX_ "\nThis is perl, version %vd\n", PL_patchlevel));
2374 PerlIO_printf(PerlIO_stdout(),
2375 Perl_form(aTHX_ " built under %s at %s %s\n",
2376 OSNAME, __DATE__, __TIME__));
2377 PerlIO_printf(PerlIO_stdout(),
2378 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 2379 OSVERS));
8e9464f1
JH		 2380#endif /* !DGUX */
2381
fb73857a 2382#if defined(LOCAL_PATCH_COUNT)
2383 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS		 2384 PerlIO_printf(PerlIO_stdout(),
2385 "\n(with %d registered patch%s, "
2386 "see perl -V for more detail)",
2387 (int)LOCAL_PATCH_COUNT,
2388 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 2389#endif
1a30305b 2390
b0e47665 2391 PerlIO_printf(PerlIO_stdout(),
bc89e66f 2392 "\n\nCopyright 1987-2001, Larry Wall\n");
eae9c151
JH		 2393#ifdef MACOS_TRADITIONAL
2394 PerlIO_printf(PerlIO_stdout(),
084592ab 2395 "\nMac OS port Copyright (c) 1991-2001, Matthias Neeracher\n");
eae9c151 2396#endif
79072805 2397#ifdef MSDOS
b0e47665
GS		 2398 PerlIO_printf(PerlIO_stdout(),
2399 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff 2400#endif
2401#ifdef DJGPP
b0e47665
GS		 2402 PerlIO_printf(PerlIO_stdout(),
2403 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2404 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 2405#endif
79072805 2406#ifdef OS2
b0e47665
GS		 2407 PerlIO_printf(PerlIO_stdout(),
2408 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2409 "Version 5 port Copyright (c) 1994-1999, Andreas Kaiser, Ilya Zakharevich\n");
79072805 2410#endif
79072805 2411#ifdef atarist
b0e47665
GS		 2412 PerlIO_printf(PerlIO_stdout(),
2413 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 2414#endif
a3f9223b 2415#ifdef __BEOS__
b0e47665
GS		 2416 PerlIO_printf(PerlIO_stdout(),
2417 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 2418#endif
1d84e8df 2419#ifdef MPE
b0e47665 2420 PerlIO_printf(PerlIO_stdout(),
dc22e1c4 2421 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2001\n");
1d84e8df 2422#endif
9d116dd7 2423#ifdef OEMVS
b0e47665
GS		 2424 PerlIO_printf(PerlIO_stdout(),
2425 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 2426#endif
495c5fdc 2427#ifdef __VOS__
b0e47665
GS		 2428 PerlIO_printf(PerlIO_stdout(),
2429 "Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n");
495c5fdc 2430#endif
092bebab 2431#ifdef __OPEN_VM
b0e47665
GS		 2432 PerlIO_printf(PerlIO_stdout(),
2433 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 2434#endif
a1a0e61e 2435#ifdef POSIX_BC
b0e47665
GS		 2436 PerlIO_printf(PerlIO_stdout(),
2437 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 2438#endif
61ae2fbf 2439#ifdef __MINT__
b0e47665
GS		 2440 PerlIO_printf(PerlIO_stdout(),
2441 "MiNT port by Guido Flohr, 1997-1999\n");
61ae2fbf 2442#endif
f83d2536 2443#ifdef EPOC
b0e47665
GS		 2444 PerlIO_printf(PerlIO_stdout(),
2445 "EPOC port by Olaf Flebbe, 1999-2000\n");
f83d2536 2446#endif
e1caacb4
JH		 2447#ifdef UNDER_CE
2448 printf("WINCE port by Rainer Keuchel, 2001\n");
2449 printf("Built on " __DATE__ " " __TIME__ "\n\n");
2450 wce_hitreturn();
2451#endif
baed7233
DL		 2452#ifdef BINARY_BUILD_NOTICE
2453 BINARY_BUILD_NOTICE;
2454#endif
b0e47665
GS		 2455 PerlIO_printf(PerlIO_stdout(),
2456 "\n\
79072805 2457Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 2458GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687
GS		 2459Complete documentation for Perl, including FAQ lists, should be found on\n\
2460this system using `man perl' or `perldoc perl'. If you have access to the\n\
2461Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
6ad3d225 2462 PerlProc_exit(0);
79072805 2463 case 'w':
599cee73 2464 if (! (PL_dowarn & G_WARN_ALL_MASK))
ac27b0f5 2465 PL_dowarn |= G_WARN_ON;
599cee73
PM		 2466 s++;
2467 return s;
2468 case 'W':
ac27b0f5 2469 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
d3a7d8c7 2470 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM		 2471 s++;
2472 return s;
2473 case 'X':
ac27b0f5 2474 PL_dowarn = G_WARN_ALL_OFF;
d3a7d8c7 2475 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW		 2476 s++;
2477 return s;
a0d0e21e 2478 case '*':
79072805
LW		 2479 case ' ':
2480 if (s[1] == '-') /* Additional switches on #! line. */
2481 return s+2;
2482 break;
a0d0e21e 2483 case '-':
79072805 2484 case 0:
51882d45 2485#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS		 2486 case '\r':
2487#endif
79072805
LW		 2488 case '\n':
2489 case '\t':
2490 break;
aa689395 2491#ifdef ALTERNATE_SHEBANG
2492 case 'S': /* OS/2 needs -S on "extproc" line. */
2493 break;
2494#endif
a0d0e21e 2495 case 'P':
3280af22 2496 if (PL_preprocess)
a0d0e21e
LW		 2497 return s+1;
2498 /* FALL THROUGH */
79072805 2499 default:
cea2e8a9 2500 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805
LW		 2501 }
2502 return Nullch;
2503}
2504
2505/* compliments of Tom Christiansen */
2506
2507/* unexec() can be found in the Gnu emacs distribution */
ee580363 2508/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW		 2509
2510void
864dbfa3 2511Perl_my_unexec(pTHX)
79072805
LW		 2512{
2513#ifdef UNEXEC
46fc3d4c 2514 SV* prog;
2515 SV* file;
ee580363 2516 int status = 1;
79072805
LW		 2517 extern int etext;
2518
ee580363 2519 prog = newSVpv(BIN_EXP, 0);
46fc3d4c 2520 sv_catpv(prog, "/perl");
6b88bc9c 2521 file = newSVpv(PL_origfilename, 0);
46fc3d4c 2522 sv_catpv(file, ".perldump");
79072805 2523
ee580363
GS		 2524 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2525 /* unexec prints msg to stderr in case of failure */
6ad3d225 2526 PerlProc_exit(status);
79072805 2527#else
a5f75d66
AD		 2528# ifdef VMS
2529# include <lib$routines.h>
2530 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
aa689395 2531# else
79072805 2532 ABORT(); /* for use with undump */
aa689395 2533# endif
a5f75d66 2534#endif
79072805
LW		 2535}
2536
cb68f92d
GS		 2537/* initialize curinterp */
2538STATIC void
cea2e8a9 2539S_init_interp(pTHX)
cb68f92d
GS		 2540{
2541
acfe0abc
GS		 2542#ifdef MULTIPLICITY
2543# define PERLVAR(var,type)
2544# define PERLVARA(var,n,type)
2545# if defined(PERL_IMPLICIT_CONTEXT)
2546# if defined(USE_5005THREADS)
2547# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
c5be433b 2548# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
acfe0abc
GS		 2549# else /* !USE_5005THREADS */
2550# define PERLVARI(var,type,init) aTHX->var = init;
2551# define PERLVARIC(var,type,init) aTHX->var = init;
2552# endif /* USE_5005THREADS */
3967c732 2553# else
acfe0abc
GS		 2554# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2555# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
066ef5b5 2556# endif
acfe0abc
GS		 2557# include "intrpvar.h"
2558# ifndef USE_5005THREADS
2559# include "thrdvar.h"
2560# endif
2561# undef PERLVAR
2562# undef PERLVARA
2563# undef PERLVARI
2564# undef PERLVARIC
2565#else
2566# define PERLVAR(var,type)
2567# define PERLVARA(var,n,type)
2568# define PERLVARI(var,type,init) PL_##var = init;
2569# define PERLVARIC(var,type,init) PL_##var = init;
2570# include "intrpvar.h"
2571# ifndef USE_5005THREADS
2572# include "thrdvar.h"
2573# endif
2574# undef PERLVAR
2575# undef PERLVARA
2576# undef PERLVARI
2577# undef PERLVARIC
cb68f92d
GS		 2578#endif
2579
cb68f92d
GS		 2580}
2581
76e3520e 2582STATIC void
cea2e8a9 2583S_init_main_stash(pTHX)
79072805 2584{
463ee0b2 2585 GV *gv;
6e72f9df 2586
2587 /* Note that strtab is a rather special HV. Assumptions are made
2588 about not iterating on it, and not adding tie magic to it.
2589 It is properly deallocated in perl_destruct() */
3280af22 2590 PL_strtab = newHV();
4d1ff10f 2591#ifdef USE_5005THREADS
5f08fbcd
GS		 2592 MUTEX_INIT(&PL_strtab_mutex);
2593#endif
3280af22
NIS		 2594 HvSHAREKEYS_off(PL_strtab); /* mandatory */
2595 hv_ksplit(PL_strtab, 512);
ac27b0f5 2596
3280af22 2597 PL_curstash = PL_defstash = newHV();
79cb57f6 2598 PL_curstname = newSVpvn("main",4);
adbc6bb1
LW		 2599 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2600 SvREFCNT_dec(GvHV(gv));
3280af22 2601 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
463ee0b2 2602 SvREADONLY_on(gv);
3280af22
NIS		 2603 HvNAME(PL_defstash) = savepv("main");
2604 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2605 GvMULTI_on(PL_incgv);
2606 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2607 GvMULTI_on(PL_hintgv);
2608 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2609 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2610 GvMULTI_on(PL_errgv);
2611 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2612 GvMULTI_on(PL_replgv);
cea2e8a9 2613 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
38a03e6e
MB		 2614 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2615 sv_setpvn(ERRSV, "", 0);
3280af22 2616 PL_curstash = PL_defstash;
11faa288 2617 CopSTASH_set(&PL_compiling, PL_defstash);
ed094faf 2618 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
3280af22 2619 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
92d29cee 2620 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
4633a7c4 2621 /* We must init $/ before switches are processed. */
864dbfa3 2622 sv_setpvn(get_sv("/", TRUE), "\n", 1);
79072805
LW		 2623}
2624
76e3520e 2625STATIC void
cea2e8a9 2626S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
79072805 2627{
6c4ab083 2628 *fdscript = -1;
79072805 2629
3280af22
NIS		 2630 if (PL_e_script) {
2631 PL_origfilename = savepv("-e");
96436eeb 2632 }
6c4ab083
GS		 2633 else {
2634 /* if find_script() returns, it returns a malloc()-ed value */
3280af22 2635 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
6c4ab083
GS		 2636
2637 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2638 char *s = scriptname + 8;
2639 *fdscript = atoi(s);
2640 while (isDIGIT(*s))
2641 s++;
2642 if (*s) {
2643 scriptname = savepv(s + 1);
3280af22
NIS		 2644 Safefree(PL_origfilename);
2645 PL_origfilename = scriptname;
6c4ab083
GS		 2646 }
2647 }
2648 }
2649
f4dd75d9
GS		 2650#ifdef USE_ITHREADS
2651 Safefree(CopFILE(PL_curcop));
2652#else
2653 SvREFCNT_dec(CopFILEGV(PL_curcop));
2654#endif
57843af0 2655 CopFILE_set(PL_curcop, PL_origfilename);
3280af22 2656 if (strEQ(PL_origfilename,"-"))
79072805 2657 scriptname = "";
01f988be 2658 if (*fdscript >= 0) {
3280af22 2659 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
96436eeb 2660#if defined(HAS_FCNTL) && defined(F_SETFD)
3280af22
NIS		 2661 if (PL_rsfp)
2662 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
96436eeb 2663#endif
2664 }
3280af22 2665 else if (PL_preprocess) {
46fc3d4c 2666 char *cpp_cfg = CPPSTDIN;
79cb57f6 2667 SV *cpp = newSVpvn("",0);
46fc3d4c 2668 SV *cmd = NEWSV(0,0);
2669
2670 if (strEQ(cpp_cfg, "cppstdin"))
cea2e8a9 2671 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
46fc3d4c 2672 sv_catpv(cpp, cpp_cfg);
79072805 2673
0df16ed7 2674 sv_catpvn(sv, "-I", 2);
fed7345c 2675 sv_catpv(sv,PRIVLIB_EXP);
46fc3d4c 2676
14953ddc
MB		 2677 DEBUG_P(PerlIO_printf(Perl_debug_log,
2678 "PL_preprocess: scriptname=\"%s\", cpp=\"%s\", sv=\"%s\", CPPMINUS=\"%s\"\n",
2679 scriptname, SvPVX (cpp), SvPVX (sv), CPPMINUS));
52853b95 2680#if defined(MSDOS) || defined(WIN32)
cea2e8a9 2681 Perl_sv_setpvf(aTHX_ cmd, "\
79072805
LW		 2682sed %s -e \"/^[^#]/b\" \
2683 -e \"/^#[ ]*include[ ]/b\" \
2684 -e \"/^#[ ]*define[ ]/b\" \
2685 -e \"/^#[ ]*if[ ]/b\" \
2686 -e \"/^#[ ]*ifdef[ ]/b\" \
2687 -e \"/^#[ ]*ifndef[ ]/b\" \
2688 -e \"/^#[ ]*else/b\" \
2689 -e \"/^#[ ]*elif[ ]/b\" \
2690 -e \"/^#[ ]*undef[ ]/b\" \
2691 -e \"/^#[ ]*endif/b\" \
2692 -e \"s/^#.*//\" \
894356b3 2693 %s | %"SVf" -C %"SVf" %s",
6b88bc9c 2694 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
79072805 2695#else
092bebab 2696# ifdef __OPEN_VM
cea2e8a9 2697 Perl_sv_setpvf(aTHX_ cmd, "\
092bebab
JH		 2698%s %s -e '/^[^#]/b' \
2699 -e '/^#[ ]*include[ ]/b' \
2700 -e '/^#[ ]*define[ ]/b' \
2701 -e '/^#[ ]*if[ ]/b' \
2702 -e '/^#[ ]*ifdef[ ]/b' \
2703 -e '/^#[ ]*ifndef[ ]/b' \
2704 -e '/^#[ ]*else/b' \
2705 -e '/^#[ ]*elif[ ]/b' \
2706 -e '/^#[ ]*undef[ ]/b' \
2707 -e '/^#[ ]*endif/b' \
2708 -e 's/^[ ]*#.*//' \
894356b3 2709 %s | %"SVf" %"SVf" %s",
092bebab 2710# else
cea2e8a9 2711 Perl_sv_setpvf(aTHX_ cmd, "\
79072805
LW		 2712%s %s -e '/^[^#]/b' \
2713 -e '/^#[ ]*include[ ]/b' \
2714 -e '/^#[ ]*define[ ]/b' \
2715 -e '/^#[ ]*if[ ]/b' \
2716 -e '/^#[ ]*ifdef[ ]/b' \
2717 -e '/^#[ ]*ifndef[ ]/b' \
2718 -e '/^#[ ]*else/b' \
2719 -e '/^#[ ]*elif[ ]/b' \
2720 -e '/^#[ ]*undef[ ]/b' \
2721 -e '/^#[ ]*endif/b' \
2722 -e 's/^[ ]*#.*//' \
894356b3 2723 %s | %"SVf" -C %"SVf" %s",
092bebab 2724# endif
79072805
LW		 2725#ifdef LOC_SED
2726 LOC_SED,
2727#else
2728 "sed",
2729#endif
3280af22 2730 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
79072805 2731#endif
46fc3d4c 2732 scriptname, cpp, sv, CPPMINUS);
3280af22 2733 PL_doextract = FALSE;
79072805 2734#ifdef IAMSUID /* actually, this is caught earlier */
b28d0864 2735 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
79072805 2736#ifdef HAS_SETEUID
b28d0864 2737 (void)seteuid(PL_uid); /* musn't stay setuid root */
79072805
LW		 2738#else
2739#ifdef HAS_SETREUID
b28d0864 2740 (void)setreuid((Uid_t)-1, PL_uid);
85e6fe83
LW		 2741#else
2742#ifdef HAS_SETRESUID
b28d0864 2743 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
79072805 2744#else
b28d0864 2745 PerlProc_setuid(PL_uid);
79072805
LW		 2746#endif
2747#endif
85e6fe83 2748#endif
b28d0864 2749 if (PerlProc_geteuid() != PL_uid)
cea2e8a9 2750 Perl_croak(aTHX_ "Can't do seteuid!\n");
79072805
LW		 2751 }
2752#endif /* IAMSUID */
3280af22 2753 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
46fc3d4c 2754 SvREFCNT_dec(cmd);
2755 SvREFCNT_dec(cpp);
79072805
LW		 2756 }
2757 else if (!*scriptname) {
bbce6d69 2758 forbid_setid("program input from stdin");
3280af22 2759 PL_rsfp = PerlIO_stdin();
79072805 2760 }
96436eeb 2761 else {
3280af22 2762 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
96436eeb 2763#if defined(HAS_FCNTL) && defined(F_SETFD)
3280af22
NIS		 2764 if (PL_rsfp)
2765 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
96436eeb 2766#endif
2767 }
3280af22 2768 if (!PL_rsfp) {
13281fa4 2769#ifdef DOSUID
a687059c 2770#ifndef IAMSUID /* in case script is not readable before setuid */
6b88bc9c 2771 if (PL_euid &&
cc49e20b 2772 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
6b88bc9c
GS		 2773 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2774 {
46fc3d4c 2775 /* try again */
a7cb1f99 2776 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS		 2777 (int)PERL_REVISION, (int)PERL_VERSION,
2778 (int)PERL_SUBVERSION), PL_origargv);
cea2e8a9 2779 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4
LW		 2780 }
2781#endif
2782#endif
584d69ec
JH		 2783#ifdef IAMSUID
2784 errno = EPERM;
2785 Perl_croak(aTHX_ "Can't open perl script: %s\n",
2786 Strerror(errno));
2787#else
cea2e8a9 2788 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
cc49e20b 2789 CopFILE(PL_curcop), Strerror(errno));
584d69ec 2790#endif
13281fa4 2791 }
79072805 2792}
8d063cd8 2793
7b89560d
JH		 2794/* Mention
2795 * I_SYSSTATVFS HAS_FSTATVFS
2796 * I_SYSMOUNT
c890dc6c 2797 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
7b89560d
JH		 2798 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2799 * here so that metaconfig picks them up. */
2800
104d25b7 2801#ifdef IAMSUID
864dbfa3 2802STATIC int
e688b231 2803S_fd_on_nosuid_fs(pTHX_ int fd)
104d25b7 2804{
0545a864
JH		 2805 int check_okay = 0; /* able to do all the required sys/libcalls */
2806 int on_nosuid = 0; /* the fd is on a nosuid fs */
104d25b7 2807/*
ad27e871 2808 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
e688b231 2809 * fstatvfs() is UNIX98.
0545a864 2810 * fstatfs() is 4.3 BSD.
ad27e871 2811 * ustat()+getmnt() is pre-4.3 BSD.
0545a864
JH		 2812 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2813 * an irrelevant filesystem while trying to reach the right one.
104d25b7
JH		 2814 */
2815
6439433f
JH		 2816#undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2817
2818# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2819 defined(HAS_FSTATVFS)
2820# define FD_ON_NOSUID_CHECK_OKAY
104d25b7 2821 struct statvfs stfs;
6439433f 2822
104d25b7
JH		 2823 check_okay = fstatvfs(fd, &stfs) == 0;
2824 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
6439433f 2825# endif /* fstatvfs */
ac27b0f5 2826
6439433f
JH		 2827# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2828 defined(PERL_MOUNT_NOSUID) && \
2829 defined(HAS_FSTATFS) && \
2830 defined(HAS_STRUCT_STATFS) && \
2831 defined(HAS_STRUCT_STATFS_F_FLAGS)
2832# define FD_ON_NOSUID_CHECK_OKAY
e688b231 2833 struct statfs stfs;
6439433f 2834
104d25b7 2835 check_okay = fstatfs(fd, &stfs) == 0;
104d25b7 2836 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
6439433f
JH		 2837# endif /* fstatfs */
2838
2839# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2840 defined(PERL_MOUNT_NOSUID) && \
2841 defined(HAS_FSTAT) && \
2842 defined(HAS_USTAT) && \
2843 defined(HAS_GETMNT) && \
2844 defined(HAS_STRUCT_FS_DATA) && \
2845 defined(NOSTAT_ONE)
2846# define FD_ON_NOSUID_CHECK_OKAY
0545a864 2847 struct stat fdst;
6439433f 2848
0545a864 2849 if (fstat(fd, &fdst) == 0) {
6439433f
JH		 2850 struct ustat us;
2851 if (ustat(fdst.st_dev, &us) == 0) {
2852 struct fs_data fsd;
2853 /* NOSTAT_ONE here because we're not examining fields which
2854 * vary between that case and STAT_ONE. */
ad27e871 2855 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
6439433f
JH		 2856 size_t cmplen = sizeof(us.f_fname);
2857 if (sizeof(fsd.fd_req.path) < cmplen)
2858 cmplen = sizeof(fsd.fd_req.path);
2859 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2860 fdst.st_dev == fsd.fd_req.dev) {
2861 check_okay = 1;
2862 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2863 }
2864 }
2865 }
2866 }
0545a864 2867 }
6439433f
JH		 2868# endif /* fstat+ustat+getmnt */
2869
2870# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2871 defined(HAS_GETMNTENT) && \
2872 defined(HAS_HASMNTOPT) && \
2873 defined(MNTOPT_NOSUID)
2874# define FD_ON_NOSUID_CHECK_OKAY
2875 FILE *mtab = fopen("/etc/mtab", "r");
2876 struct mntent *entry;
2877 struct stat stb, fsb;
104d25b7
JH		 2878
2879 if (mtab && (fstat(fd, &stb) == 0)) {
6439433f
JH		 2880 while (entry = getmntent(mtab)) {
2881 if (stat(entry->mnt_dir, &fsb) == 0
2882 && fsb.st_dev == stb.st_dev)
2883 {
2884 /* found the filesystem */
2885 check_okay = 1;
2886 if (hasmntopt(entry, MNTOPT_NOSUID))
2887 on_nosuid = 1;
2888 break;
2889 } /* A single fs may well fail its stat(). */
2890 }
104d25b7
JH		 2891 }
2892 if (mtab)
6439433f
JH		 2893 fclose(mtab);
2894# endif /* getmntent+hasmntopt */
0545a864 2895
ac27b0f5 2896 if (!check_okay)
0545a864 2897 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
104d25b7
JH		 2898 return on_nosuid;
2899}
2900#endif /* IAMSUID */
2901
76e3520e 2902STATIC void
cea2e8a9 2903S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
79072805 2904{
155aba94 2905#ifdef IAMSUID
96436eeb 2906 int which;
155aba94 2907#endif
96436eeb 2908
13281fa4
LW		 2909 /* do we need to emulate setuid on scripts? */
2910
2911 /* This code is for those BSD systems that have setuid #! scripts disabled
2912 * in the kernel because of a security problem. Merely defining DOSUID
2913 * in perl will not fix that problem, but if you have disabled setuid
2914 * scripts in the kernel, this will attempt to emulate setuid and setgid
2915 * on scripts that have those now-otherwise-useless bits set. The setuid
27e2fb84
LW		 2916 * root version must be called suidperl or sperlN.NNN. If regular perl
2917 * discovers that it has opened a setuid script, it calls suidperl with
2918 * the same argv that it had. If suidperl finds that the script it has
2919 * just opened is NOT setuid root, it sets the effective uid back to the
2920 * uid. We don't just make perl setuid root because that loses the
2921 * effective uid we had before invoking perl, if it was different from the
2922 * uid.
13281fa4
LW		 2923 *
2924 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2925 * be defined in suidperl only. suidperl must be setuid root. The
2926 * Configure script will set this up for you if you want it.
2927 */
a687059c 2928
13281fa4 2929#ifdef DOSUID
6e72f9df 2930 char *s, *s2;
a0d0e21e 2931
b28d0864 2932 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
cea2e8a9 2933 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
b28d0864 2934 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
79072805 2935 I32 len;
2d8e6c8d 2936 STRLEN n_a;
13281fa4 2937
a687059c 2938#ifdef IAMSUID
fe14fcc3 2939#ifndef HAS_SETREUID
a687059c
LW		 2940 /* On this access check to make sure the directories are readable,
2941 * there is actually a small window that the user could use to make
2942 * filename point to an accessible directory. So there is a faint
2943 * chance that someone could execute a setuid script down in a
2944 * non-accessible directory. I don't know what to do about that.
2945 * But I don't think it's too important. The manual lies when
2946 * it says access() is useful in setuid programs.
2947 */
cc49e20b 2948 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
cea2e8a9 2949 Perl_croak(aTHX_ "Permission denied");
a687059c
LW		 2950#else
2951 /* If we can swap euid and uid, then we can determine access rights
2952 * with a simple stat of the file, and then compare device and
2953 * inode to make sure we did stat() on the same file we opened.
2954 * Then we just have to make sure he or she can execute it.
2955 */
2956 {
2957 struct stat tmpstatbuf;
2958
85e6fe83
LW		 2959 if (
2960#ifdef HAS_SETREUID
b28d0864 2961 setreuid(PL_euid,PL_uid) < 0
a0d0e21e
LW		 2962#else
2963# if HAS_SETRESUID
b28d0864 2964 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
a0d0e21e 2965# endif
85e6fe83 2966#endif
b28d0864 2967 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
cea2e8a9 2968 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
cc49e20b 2969 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
cea2e8a9 2970 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
2bb3463c 2971#if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
e688b231 2972 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
cea2e8a9 2973 Perl_croak(aTHX_ "Permission denied");
104d25b7 2974#endif
b28d0864
NIS		 2975 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
2976 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
2977 (void)PerlIO_close(PL_rsfp);
cea2e8a9 2978 Perl_croak(aTHX_ "Permission denied\n");
a687059c 2979 }
85e6fe83
LW		 2980 if (
2981#ifdef HAS_SETREUID
b28d0864 2982 setreuid(PL_uid,PL_euid) < 0
a0d0e21e
LW		 2983#else
2984# if defined(HAS_SETRESUID)
b28d0864 2985 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
a0d0e21e 2986# endif
85e6fe83 2987#endif
b28d0864 2988 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
cea2e8a9 2989 Perl_croak(aTHX_ "Can't reswap uid and euid");
b28d0864 2990 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
cea2e8a9 2991 Perl_croak(aTHX_ "Permission denied\n");
a687059c 2992 }
fe14fcc3 2993#endif /* HAS_SETREUID */
a687059c
LW		 2994#endif /* IAMSUID */
2995
b28d0864 2996 if (!S_ISREG(PL_statbuf.st_mode))
cea2e8a9 2997 Perl_croak(aTHX_ "Permission denied");
b28d0864 2998 if (PL_statbuf.st_mode & S_IWOTH)
cea2e8a9 2999 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
6b88bc9c 3000 PL_doswitches = FALSE; /* -s is insecure in suid */
57843af0 3001 CopLINE_inc(PL_curcop);
6b88bc9c 3002 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
2d8e6c8d 3003 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
cea2e8a9 3004 Perl_croak(aTHX_ "No #! line");
2d8e6c8d 3005 s = SvPV(PL_linestr,n_a)+2;
663a0e37 3006 if (*s == ' ') s++;
45d8adaa 3007 while (!isSPACE(*s)) s++;
2d8e6c8d 3008 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
6e72f9df 3009 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
3010 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
cea2e8a9 3011 Perl_croak(aTHX_ "Not a perl script");
a687059c 3012 while (*s == ' ' || *s == '\t') s++;
13281fa4
LW		 3013 /*
3014 * #! arg must be what we saw above. They can invoke it by
3015 * mentioning suidperl explicitly, but they may not add any strange
3016 * arguments beyond what #! says if they do invoke suidperl that way.
3017 */
3018 len = strlen(validarg);
3019 if (strEQ(validarg," PHOOEY ") ||
45d8adaa 3020 strnNE(s,validarg,len) || !isSPACE(s[len]))
cea2e8a9 3021 Perl_croak(aTHX_ "Args must match #! line");
a687059c
LW		 3022
3023#ifndef IAMSUID
b28d0864
NIS		 3024 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
3025 PL_euid == PL_statbuf.st_uid)
3026 if (!PL_do_undump)
cea2e8a9 3027 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
a687059c
LW		 3028FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3029#endif /* IAMSUID */
13281fa4 3030
b28d0864
NIS		 3031 if (PL_euid) { /* oops, we're not the setuid root perl */
3032 (void)PerlIO_close(PL_rsfp);
13281fa4 3033#ifndef IAMSUID
46fc3d4c 3034 /* try again */
a7cb1f99 3035 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS		 3036 (int)PERL_REVISION, (int)PERL_VERSION,
3037 (int)PERL_SUBVERSION), PL_origargv);
13281fa4 3038#endif
cea2e8a9 3039 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4
LW		 3040 }
3041
b28d0864 3042 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
fe14fcc3 3043#ifdef HAS_SETEGID
b28d0864 3044 (void)setegid(PL_statbuf.st_gid);
a687059c 3045#else
fe14fcc3 3046#ifdef HAS_SETREGID
b28d0864 3047 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
85e6fe83
LW		 3048#else
3049#ifdef HAS_SETRESGID
b28d0864 3050 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
a687059c 3051#else
b28d0864 3052 PerlProc_setgid(PL_statbuf.st_gid);
a687059c
LW		 3053#endif
3054#endif
85e6fe83 3055#endif
b28d0864 3056 if (PerlProc_getegid() != PL_statbuf.st_gid)
cea2e8a9 3057 Perl_croak(aTHX_ "Can't do setegid!\n");
83025b21 3058 }
b28d0864
NIS		 3059 if (PL_statbuf.st_mode & S_ISUID) {
3060 if (PL_statbuf.st_uid != PL_euid)
fe14fcc3 3061#ifdef HAS_SETEUID
b28d0864 3062 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
a687059c 3063#else
fe14fcc3 3064#ifdef HAS_SETREUID
b28d0864 3065 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
85e6fe83
LW		 3066#else
3067#ifdef HAS_SETRESUID
b28d0864 3068 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
a687059c 3069#else
b28d0864 3070 PerlProc_setuid(PL_statbuf.st_uid);
a687059c
LW		 3071#endif
3072#endif
85e6fe83 3073#endif
b28d0864 3074 if (PerlProc_geteuid() != PL_statbuf.st_uid)
cea2e8a9 3075 Perl_croak(aTHX_ "Can't do seteuid!\n");
a687059c 3076 }
b28d0864 3077 else if (PL_uid) { /* oops, mustn't run as root */
fe14fcc3 3078#ifdef HAS_SETEUID
b28d0864 3079 (void)seteuid((Uid_t)PL_uid);
a687059c 3080#else
fe14fcc3 3081#ifdef HAS_SETREUID
b28d0864 3082 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
a687059c 3083#else
85e6fe83 3084#ifdef HAS_SETRESUID
b28d0864 3085 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
85e6fe83 3086#else
b28d0864 3087 PerlProc_setuid((Uid_t)PL_uid);
85e6fe83 3088#endif
a687059c
LW		 3089#endif
3090#endif
b28d0864 3091 if (PerlProc_geteuid() != PL_uid)
cea2e8a9 3092 Perl_croak(aTHX_ "Can't do seteuid!\n");
83025b21 3093 }
748a9306 3094 init_ids();
b28d0864 3095 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
cea2e8a9 3096 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
13281fa4
LW		 3097 }
3098#ifdef IAMSUID
6b88bc9c 3099 else if (PL_preprocess)
cea2e8a9 3100 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
96436eeb 3101 else if (fdscript >= 0)
cea2e8a9 3102 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
13281fa4 3103 else
cea2e8a9 3104 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
96436eeb 3105
3106 /* We absolutely must clear out any saved ids here, so we */
3107 /* exec the real perl, substituting fd script for scriptname. */
3108 /* (We pass script name as "subdir" of fd, which perl will grok.) */
b28d0864
NIS		 3109 PerlIO_rewind(PL_rsfp);
3110 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
6b88bc9c
GS		 3111 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3112 if (!PL_origargv[which])
cea2e8a9
GS		 3113 Perl_croak(aTHX_ "Permission denied");
3114 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
6b88bc9c 3115 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
96436eeb 3116#if defined(HAS_FCNTL) && defined(F_SETFD)
b28d0864 3117 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
96436eeb 3118#endif
a7cb1f99 3119 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS		 3120 (int)PERL_REVISION, (int)PERL_VERSION,
3121 (int)PERL_SUBVERSION), PL_origargv);/* try again */
cea2e8a9 3122 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4 3123#endif /* IAMSUID */
a687059c 3124#else /* !DOSUID */
3280af22 3125 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
a687059c 3126#ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
b28d0864
NIS		 3127 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3128 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
a687059c 3129 ||
b28d0864 3130 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
a687059c 3131 )
b28d0864 3132 if (!PL_do_undump)
cea2e8a9 3133 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
a687059c
LW		 3134FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3135#endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3136 /* not set-id, must be wrapped */
a687059c 3137 }
13281fa4 3138#endif /* DOSUID */
79072805 3139}
13281fa4 3140
76e3520e 3141STATIC void
cea2e8a9 3142S_find_beginning(pTHX)
79072805 3143{
6e72f9df 3144 register char *s, *s2;
33b78306
LW		 3145
3146 /* skip forward in input to the real script? */
3147
bbce6d69 3148 forbid_setid("-x");
bf4acbe4 3149#ifdef MACOS_TRADITIONAL
084592ab 3150 /* Since the Mac OS does not honor #! arguments for us, we do it ourselves */
ac27b0f5 3151
bf4acbe4
GS		 3152 while (PL_doextract || gMacPerl_AlwaysExtract) {
3153 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3154 if (!gMacPerl_AlwaysExtract)
3155 Perl_croak(aTHX_ "No Perl script found in input\n");
3156
3157 if (PL_doextract) /* require explicit override ? */
3158 if (!OverrideExtract(PL_origfilename))
3159 Perl_croak(aTHX_ "User aborted script\n");
3160 else
3161 PL_doextract = FALSE;
3162
3163 /* Pater peccavi, file does not have #! */
3164 PerlIO_rewind(PL_rsfp);
ac27b0f5 3165
bf4acbe4
GS		 3166 break;
3167 }
3168#else
3280af22
NIS		 3169 while (PL_doextract) {
3170 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
cea2e8a9 3171 Perl_croak(aTHX_ "No Perl script found in input\n");
bf4acbe4 3172#endif
4f0c37ba
IZ		 3173 s2 = s;
3174 if (*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))) {
3280af22
NIS		 3175 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3176 PL_doextract = FALSE;
6e72f9df 3177 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3178 s2 = s;
3179 while (*s == ' ' || *s == '\t') s++;
3180 if (*s++ == '-') {
3181 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3182 if (strnEQ(s2-4,"perl",4))
3183 /*SUPPRESS 530*/
155aba94
GS		 3184 while ((s = moreswitches(s)))
3185 ;
33b78306 3186 }
95e8664e
CN		 3187#ifdef MACOS_TRADITIONAL
3188 break;
3189#endif
83025b21
LW		 3190 }
3191 }
3192}
3193
afe37c7d 3194
76e3520e 3195STATIC void
cea2e8a9 3196S_init_ids(pTHX)
352d5a3a 3197{
d8eceb89
JH		 3198 PL_uid = PerlProc_getuid();
3199 PL_euid = PerlProc_geteuid();
3200 PL_gid = PerlProc_getgid();
3201 PL_egid = PerlProc_getegid();
748a9306 3202#ifdef VMS
b28d0864
NIS		 3203 PL_uid |= PL_gid << 16;
3204 PL_euid |= PL_egid << 16;
748a9306 3205#endif
3280af22 3206 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
748a9306 3207}
79072805 3208
76e3520e 3209STATIC void
cea2e8a9 3210S_forbid_setid(pTHX_ char *s)
bbce6d69 3211{
3280af22 3212 if (PL_euid != PL_uid)
cea2e8a9 3213 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3280af22 3214 if (PL_egid != PL_gid)
cea2e8a9 3215 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
bbce6d69 3216}
3217
1ee4443e
IZ		 3218void
3219Perl_init_debugger(pTHX)
748a9306 3220{
1ee4443e
IZ		 3221 HV *ostash = PL_curstash;
3222
3280af22
NIS		 3223 PL_curstash = PL_debstash;
3224 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3225 AvREAL_off(PL_dbargs);
3226 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3227 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3228 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
1ee4443e 3229 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3280af22 3230 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3231 sv_setiv(PL_DBsingle, 0);
3280af22 3232 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3233 sv_setiv(PL_DBtrace, 0);
3280af22 3234 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3235 sv_setiv(PL_DBsignal, 0);
1ee4443e 3236 PL_curstash = ostash;
352d5a3a
LW		 3237}
3238
2ce36478
SM		 3239#ifndef STRESS_REALLOC
3240#define REASONABLE(size) (size)
3241#else
3242#define REASONABLE(size) (1) /* unreasonable */
3243#endif
3244
11343788 3245void
cea2e8a9 3246Perl_init_stacks(pTHX)
79072805 3247{
e336de0d 3248 /* start with 128-item stack and 8K cxstack */
3280af22 3249 PL_curstackinfo = new_stackinfo(REASONABLE(128),
e336de0d 3250 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3280af22
NIS		 3251 PL_curstackinfo->si_type = PERLSI_MAIN;
3252 PL_curstack = PL_curstackinfo->si_stack;
3253 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
79072805 3254
3280af22
NIS		 3255 PL_stack_base = AvARRAY(PL_curstack);
3256 PL_stack_sp = PL_stack_base;
3257 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
8990e307 3258
3280af22
NIS		 3259 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3260 PL_tmps_floor = -1;
3261 PL_tmps_ix = -1;
3262 PL_tmps_max = REASONABLE(128);
8990e307 3263
3280af22
NIS		 3264 New(54,PL_markstack,REASONABLE(32),I32);
3265 PL_markstack_ptr = PL_markstack;
3266 PL_markstack_max = PL_markstack + REASONABLE(32);
79072805 3267
ce2f7c3b 3268 SET_MARK_OFFSET;
e336de0d 3269
3280af22
NIS		 3270 New(54,PL_scopestack,REASONABLE(32),I32);
3271 PL_scopestack_ix = 0;
3272 PL_scopestack_max = REASONABLE(32);
79072805 3273
3280af22
NIS		 3274 New(54,PL_savestack,REASONABLE(128),ANY);
3275 PL_savestack_ix = 0;
3276 PL_savestack_max = REASONABLE(128);
79072805 3277
3280af22
NIS		 3278 New(54,PL_retstack,REASONABLE(16),OP*);
3279 PL_retstack_ix = 0;
3280 PL_retstack_max = REASONABLE(16);
378cc40b 3281}
33b78306 3282
2ce36478
SM		 3283#undef REASONABLE
3284
76e3520e 3285STATIC void
cea2e8a9 3286S_nuke_stacks(pTHX)
6e72f9df 3287{
3280af22
NIS		 3288 while (PL_curstackinfo->si_next)
3289 PL_curstackinfo = PL_curstackinfo->si_next;
3290 while (PL_curstackinfo) {
3291 PERL_SI *p = PL_curstackinfo->si_prev;
bac4b2ad 3292 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3280af22
NIS		 3293 Safefree(PL_curstackinfo->si_cxstack);
3294 Safefree(PL_curstackinfo);
3295 PL_curstackinfo = p;
e336de0d 3296 }
3280af22
NIS		 3297 Safefree(PL_tmps_stack);
3298 Safefree(PL_markstack);
3299 Safefree(PL_scopestack);
3300 Safefree(PL_savestack);
3301 Safefree(PL_retstack);
378cc40b 3302}
33b78306 3303
76e3520e 3304STATIC void
cea2e8a9 3305S_init_lexer(pTHX)
8990e307 3306{
06039172 3307 PerlIO *tmpfp;
3280af22
NIS		 3308 tmpfp = PL_rsfp;
3309 PL_rsfp = Nullfp;
3310 lex_start(PL_linestr);
3311 PL_rsfp = tmpfp;
79cb57f6 3312 PL_subname = newSVpvn("main",4);
8990e307
LW		 3313}
3314
76e3520e 3315STATIC void
cea2e8a9 3316S_init_predump_symbols(pTHX)
45d8adaa 3317{
93a17b20 3318 GV *tmpgv;
af8c498a 3319 IO *io;
79072805 3320
864dbfa3 3321 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3280af22
NIS		 3322 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3323 GvMULTI_on(PL_stdingv);
af8c498a 3324 io = GvIOp(PL_stdingv);
a04651f4 3325 IoTYPE(io) = IoTYPE_RDONLY;
af8c498a 3326 IoIFP(io) = PerlIO_stdin();
adbc6bb1 3327 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
a5f75d66 3328 GvMULTI_on(tmpgv);
af8c498a 3329 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3330
85e6fe83 3331 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
a5f75d66 3332 GvMULTI_on(tmpgv);
af8c498a 3333 io = GvIOp(tmpgv);
a04651f4 3334 IoTYPE(io) = IoTYPE_WRONLY;
af8c498a 3335 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
4633a7c4 3336 setdefout(tmpgv);
adbc6bb1 3337 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
a5f75d66 3338 GvMULTI_on(tmpgv);
af8c498a 3339 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3340
bf49b057
GS		 3341 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3342 GvMULTI_on(PL_stderrgv);
3343 io = GvIOp(PL_stderrgv);
a04651f4 3344 IoTYPE(io) = IoTYPE_WRONLY;
af8c498a 3345 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
adbc6bb1 3346 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
a5f75d66 3347 GvMULTI_on(tmpgv);
af8c498a 3348 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3349
3280af22 3350 PL_statname = NEWSV(66,0); /* last filename we did stat on */
ab821d7f 3351
bf4acbe4
GS		 3352 if (PL_osname)
3353 Safefree(PL_osname);
3354 PL_osname = savepv(OSNAME);
79072805 3355}
33b78306 3356
76e3520e 3357STATIC void
cea2e8a9 3358S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
33b78306 3359{
79072805
LW		 3360 char *s;
3361 SV *sv;
3362 GV* tmpgv;
9cbac4c7 3363#ifdef NEED_ENVIRON_DUP_FOR_MODIFY
516a5887 3364 char **dup_env_base = 0;
103a7189 3365 int dup_env_count = 0;
9cbac4c7 3366#endif
fe14fcc3 3367
79072805 3368 argc--,argv++; /* skip name of script */
3280af22 3369 if (PL_doswitches) {
79072805
LW		 3370 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3371 if (!argv[0][1])
3372 break;
379d538a 3373 if (argv[0][1] == '-' && !argv[0][2]) {
79072805
LW		 3374 argc--,argv++;
3375 break;
3376 }
155aba94 3377 if ((s = strchr(argv[0], '='))) {
79072805 3378 *s++ = '\0';
85e6fe83 3379 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
79072805
LW		 3380 }
3381 else
85e6fe83 3382 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
fe14fcc3 3383 }
79072805 3384 }
3280af22
NIS		 3385 PL_toptarget = NEWSV(0,0);
3386 sv_upgrade(PL_toptarget, SVt_PVFM);
3387 sv_setpvn(PL_toptarget, "", 0);
3388 PL_bodytarget = NEWSV(0,0);
3389 sv_upgrade(PL_bodytarget, SVt_PVFM);
3390 sv_setpvn(PL_bodytarget, "", 0);
3391 PL_formtarget = PL_bodytarget;
79072805 3392
bbce6d69 3393 TAINT;
155aba94 3394 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
bf4acbe4
GS		 3395#ifdef MACOS_TRADITIONAL
3396 /* $0 is not majick on a Mac */
3397 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3398#else
3280af22 3399 sv_setpv(GvSV(tmpgv),PL_origfilename);
79072805 3400 magicname("0", "0", 1);
bf4acbe4 3401#endif
79072805 3402 }
155aba94 3403 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV)))
ed344e4f 3404#ifdef OS2
23da6c43 3405 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
ed344e4f 3406#else
3280af22 3407 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
ed344e4f 3408#endif
155aba94 3409 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3280af22
NIS		 3410 GvMULTI_on(PL_argvgv);
3411 (void)gv_AVadd(PL_argvgv);
3412 av_clear(GvAVn(PL_argvgv));
79072805 3413 for (; argc > 0; argc--,argv++) {
729a02f2
GS		 3414 SV *sv = newSVpv(argv[0],0);
3415 av_push(GvAVn(PL_argvgv),sv);
3416 if (PL_widesyscalls)
e84ff256 3417 (void)sv_utf8_decode(sv);
79072805
LW		 3418 }
3419 }
155aba94 3420 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
79072805 3421 HV *hv;
3280af22
NIS		 3422 GvMULTI_on(PL_envgv);
3423 hv = GvHVn(PL_envgv);
14befaf4 3424 hv_magic(hv, Nullgv, PERL_MAGIC_env);
fa6a1c44 3425#ifdef USE_ENVIRON_ARRAY
4633a7c4
LW		 3426 /* Note that if the supplied env parameter is actually a copy
3427 of the global environ then it may now point to free'd memory
3428 if the environment has been modified since. To avoid this
3429 problem we treat env==NULL as meaning 'use the default'
3430 */
3431 if (!env)
3432 env = environ;
5aabfad6 3433 if (env != environ)
79072805 3434 environ[0] = Nullch;
103a7189
JH		 3435#ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3436 {
3437 char **env_base;
9041c2e3 3438 for (env_base = env; *env; env++)
103a7189
JH		 3439 dup_env_count++;
3440 if ((dup_env_base = (char **)
480bfd1e 3441 safesysmalloc( sizeof(char *) * (dup_env_count+1) ))) {
103a7189
JH		 3442 char **dup_env;
3443 for (env = env_base, dup_env = dup_env_base;
3444 *env;
480bfd1e
JH		 3445 env++, dup_env++) {
3446 /* With environ one needs to use safesysmalloc(). */
3447 *dup_env = safesysmalloc(strlen(*env) + 1);
3448 (void)strcpy(*dup_env, *env);
3449 }
103a7189
JH		 3450 *dup_env = Nullch;
3451 env = dup_env_base;
3452 } /* else what? */
3453 }
3454#endif /* NEED_ENVIRON_DUP_FOR_MODIFY */
764df951
IZ		 3455 if (env)
3456 for (; *env; env++) {
93a17b20 3457 if (!(s = strchr(*env,'=')))
79072805
LW		 3458 continue;
3459 *s++ = '\0';
60ce6247 3460#if defined(MSDOS)
137443ea 3461 (void)strupr(*env);
3462#endif
79072805
LW		 3463 sv = newSVpv(s--,0);
3464 (void)hv_store(hv, *env, s - *env, sv, 0);
3465 *s = '=';
764df951 3466 }
480bfd1e 3467#ifdef NEED_ENVIRON_DUP_FOR_MODIFY
103a7189
JH		 3468 if (dup_env_base) {
3469 char **dup_env;
3470 for (dup_env = dup_env_base; *dup_env; dup_env++)
480bfd1e
JH		 3471 safesysfree(*dup_env);
3472 safesysfree(dup_env_base);
103a7189 3473 }
7e0f6a1f 3474#endif /* NEED_ENVIRON_DUP_FOR_MODIFY */
103a7189 3475#endif /* USE_ENVIRON_ARRAY */
79072805 3476 }
bbce6d69 3477 TAINT_NOT;
155aba94 3478 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
7766f137 3479 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
33b78306 3480}
34de22dd 3481
76e3520e 3482STATIC void
cea2e8a9 3483S_init_perllib(pTHX)
34de22dd 3484{
85e6fe83 3485 char *s;
3280af22 3486 if (!PL_tainting) {
552a7a9b 3487#ifndef VMS
76e3520e 3488 s = PerlEnv_getenv("PERL5LIB");
85e6fe83 3489 if (s)
9c8a64f0 3490 incpush(s, TRUE, TRUE);
85e6fe83 3491 else
9c8a64f0 3492 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE);
552a7a9b 3493#else /* VMS */
3494 /* Treat PERL5?LIB as a possible search list logical name -- the
3495 * "natural" VMS idiom for a Unix path string. We allow each
3496 * element to be a set of |-separated directories for compatibility.
3497 */
3498 char buf[256];
3499 int idx = 0;
3500 if (my_trnlnm("PERL5LIB",buf,0))
9c8a64f0 3501 do { incpush(buf,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
552a7a9b 3502 else
9c8a64f0 3503 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE);
552a7a9b 3504#endif /* VMS */
85e6fe83 3505 }
34de22dd 3506
c90c0ff4 3507/* Use the ~-expanded versions of APPLLIB (undocumented),
65f19062 3508 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
df5cef82 3509*/
4633a7c4 3510#ifdef APPLLIB_EXP
9c8a64f0 3511 incpush(APPLLIB_EXP, TRUE, TRUE);
16d20bd9 3512#endif
4633a7c4 3513
fed7345c 3514#ifdef ARCHLIB_EXP
9c8a64f0 3515 incpush(ARCHLIB_EXP, FALSE, FALSE);
a0d0e21e 3516#endif
bf4acbe4
GS		 3517#ifdef MACOS_TRADITIONAL
3518 {
3519 struct stat tmpstatbuf;
3520 SV * privdir = NEWSV(55, 0);
3521 char * macperl = PerlEnv_getenv("MACPERL");
3522
3523 if (!macperl)
3524 macperl = "";
3525
3526 Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl);
3527 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3528 incpush(SvPVX(privdir), TRUE, FALSE);
3529 Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl);
3530 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3531 incpush(SvPVX(privdir), TRUE, FALSE);
ac27b0f5 3532
bf4acbe4
GS		 3533 SvREFCNT_dec(privdir);
3534 }
3535 if (!PL_tainting)
3536 incpush(":", FALSE, FALSE);
3537#else
fed7345c 3538#ifndef PRIVLIB_EXP
65f19062 3539# define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
34de22dd 3540#endif
ac27b0f5 3541#if defined(WIN32)
9c8a64f0 3542 incpush(PRIVLIB_EXP, TRUE, FALSE);
00dc2f4f 3543#else
9c8a64f0 3544 incpush(PRIVLIB_EXP, FALSE, FALSE);
00dc2f4f 3545#endif
4633a7c4 3546
65f19062 3547#ifdef SITEARCH_EXP
3b290362
GS		 3548 /* sitearch is always relative to sitelib on Windows for
3549 * DLL-based path intuition to work correctly */
3550# if !defined(WIN32)
9c8a64f0 3551 incpush(SITEARCH_EXP, FALSE, FALSE);
65f19062
GS		 3552# endif
3553#endif
3554
4633a7c4 3555#ifdef SITELIB_EXP
65f19062 3556# if defined(WIN32)
9c8a64f0 3557 incpush(SITELIB_EXP, TRUE, FALSE); /* this picks up sitearch as well */
65f19062 3558# else
9c8a64f0 3559 incpush(SITELIB_EXP, FALSE, FALSE);
65f19062
GS		 3560# endif
3561#endif
189d1e8d 3562
65f19062 3563#ifdef SITELIB_STEM /* Search for version-specific dirs below here */
9c8a64f0 3564 incpush(SITELIB_STEM, FALSE, TRUE);
81c6dfba 3565#endif
65f19062
GS		 3566
3567#ifdef PERL_VENDORARCH_EXP
4ea817c6 3568 /* vendorarch is always relative to vendorlib on Windows for
3b290362
GS		 3569 * DLL-based path intuition to work correctly */
3570# if !defined(WIN32)
9c8a64f0 3571 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE);
65f19062 3572# endif
4b03c463 3573#endif
65f19062
GS		 3574
3575#ifdef PERL_VENDORLIB_EXP
3576# if defined(WIN32)
9c8a64f0 3577 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE); /* this picks up vendorarch as well */
65f19062 3578# else
9c8a64f0 3579 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE);
65f19062 3580# endif
a3635516 3581#endif
65f19062
GS		 3582
3583#ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
9c8a64f0 3584 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE);
00dc2f4f 3585#endif
65f19062 3586
3b777bb4
GS		 3587#ifdef PERL_OTHERLIBDIRS
3588 incpush(PERL_OTHERLIBDIRS, TRUE, TRUE);
3589#endif
3590
3280af22 3591 if (!PL_tainting)
9c8a64f0 3592 incpush(".", FALSE, FALSE);
bf4acbe4 3593#endif /* MACOS_TRADITIONAL */
774d564b 3594}
3595
ed79a026 3596#if defined(DOSISH) || defined(EPOC)
774d564b 3597# define PERLLIB_SEP ';'
3598#else
3599# if defined(VMS)
3600# define PERLLIB_SEP '|'
3601# else
bf4acbe4
GS		 3602# if defined(MACOS_TRADITIONAL)
3603# define PERLLIB_SEP ','
3604# else
3605# define PERLLIB_SEP ':'
3606# endif
774d564b 3607# endif
3608#endif
3609#ifndef PERLLIB_MANGLE
3610# define PERLLIB_MANGLE(s,n) (s)
ac27b0f5 3611#endif
774d564b 3612
76e3520e 3613STATIC void
9c8a64f0 3614S_incpush(pTHX_ char *p, int addsubdirs, int addoldvers)
774d564b 3615{
3616 SV *subdir = Nullsv;
774d564b 3617
3b290362 3618 if (!p || !*p)
774d564b 3619 return;
3620
9c8a64f0 3621 if (addsubdirs || addoldvers) {
00db4c45 3622 subdir = sv_newmortal();
774d564b 3623 }
3624
3625 /* Break at all separators */
3626 while (p && *p) {
8c52afec 3627 SV *libdir = NEWSV(55,0);
774d564b 3628 char *s;
3629
3630 /* skip any consecutive separators */
3631 while ( *p == PERLLIB_SEP ) {
3632 /* Uncomment the next line for PATH semantics */
79cb57f6 3633 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
774d564b 3634 p++;
3635 }
3636
3637 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
3638 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
3639 (STRLEN)(s - p));
3640 p = s + 1;
3641 }
3642 else {
3643 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
3644 p = Nullch; /* break out */
3645 }
bf4acbe4
GS		 3646#ifdef MACOS_TRADITIONAL
3647 if (!strchr(SvPVX(libdir), ':'))
3648 sv_insert(libdir, 0, 0, ":", 1);
3649 if (SvPVX(libdir)[SvCUR(libdir)-1] != ':')
3650 sv_catpv(libdir, ":");
3651#endif
774d564b 3652
3653 /*
3654 * BEFORE pushing libdir onto @INC we may first push version- and
3655 * archname-specific sub-directories.
3656 */
9c8a64f0 3657 if (addsubdirs || addoldvers) {
29d82f8d 3658#ifdef PERL_INC_VERSION_LIST
8353b874
GS		 3659 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
3660 const char *incverlist[] = { PERL_INC_VERSION_LIST };
29d82f8d
GS		 3661 const char **incver;
3662#endif
774d564b 3663 struct stat tmpstatbuf;
aa689395 3664#ifdef VMS
3665 char *unix;
3666 STRLEN len;
774d564b 3667
2d8e6c8d 3668 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
aa689395 3669 len = strlen(unix);
3670 while (unix[len-1] == '/') len--; /* Cosmetic */
3671 sv_usepvn(libdir,unix,len);
3672 }
3673 else
bf49b057 3674 PerlIO_printf(Perl_error_log,
aa689395 3675 "Failed to unixify @INC element \"%s\"\n",
2d8e6c8d 3676 SvPV(libdir,len));
aa689395 3677#endif
9c8a64f0 3678 if (addsubdirs) {
bf4acbe4
GS		 3679#ifdef MACOS_TRADITIONAL
3680#define PERL_AV_SUFFIX_FMT ""
084592ab
CN		 3681#define PERL_ARCH_FMT "%s:"
3682#define PERL_ARCH_FMT_PATH PERL_FS_VER_FMT PERL_AV_SUFFIX_FMT
bf4acbe4
GS		 3683#else
3684#define PERL_AV_SUFFIX_FMT "/"
3685#define PERL_ARCH_FMT "/%s"
084592ab 3686#define PERL_ARCH_FMT_PATH PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT
bf4acbe4 3687#endif
9c8a64f0 3688 /* .../version/archname if -d .../version/archname */
084592ab 3689 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH PERL_ARCH_FMT,
9c8a64f0
GS		 3690 libdir,
3691 (int)PERL_REVISION, (int)PERL_VERSION,
3692 (int)PERL_SUBVERSION, ARCHNAME);
3693 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3694 S_ISDIR(tmpstatbuf.st_mode))
3695 av_push(GvAVn(PL_incgv), newSVsv(subdir));
4b03c463 3696
9c8a64f0 3697 /* .../version if -d .../version */
084592ab 3698 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH, libdir,
9c8a64f0
GS		 3699 (int)PERL_REVISION, (int)PERL_VERSION,
3700 (int)PERL_SUBVERSION);
3701 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3702 S_ISDIR(tmpstatbuf.st_mode))
3703 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3704
3705 /* .../archname if -d .../archname */
bf4acbe4 3706 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, ARCHNAME);
29d82f8d
GS		 3707 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3708 S_ISDIR(tmpstatbuf.st_mode))
3709 av_push(GvAVn(PL_incgv), newSVsv(subdir));
29d82f8d 3710 }
9c8a64f0 3711
9c8a64f0 3712#ifdef PERL_INC_VERSION_LIST
ccc2aad8 3713 if (addoldvers) {
9c8a64f0
GS		 3714 for (incver = incverlist; *incver; incver++) {
3715 /* .../xxx if -d .../xxx */
bf4acbe4 3716 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, *incver);
9c8a64f0
GS		 3717 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3718 S_ISDIR(tmpstatbuf.st_mode))
3719 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3720 }
3721 }
29d82f8d 3722#endif
774d564b 3723 }
3724
3725 /* finally push this lib directory on the end of @INC */
3280af22 3726 av_push(GvAVn(PL_incgv), libdir);
774d564b 3727 }
34de22dd 3728}
93a17b20 3729
4d1ff10f 3730#ifdef USE_5005THREADS
76e3520e 3731STATIC struct perl_thread *
cea2e8a9 3732S_init_main_thread(pTHX)
199100c8 3733{
c5be433b 3734#if !defined(PERL_IMPLICIT_CONTEXT)
52e1cb5e 3735 struct perl_thread *thr;
cea2e8a9 3736#endif
199100c8
MB		 3737 XPV *xpv;
3738
52e1cb5e 3739 Newz(53, thr, 1, struct perl_thread);
533c011a 3740 PL_curcop = &PL_compiling;
c5be433b 3741 thr->interp = PERL_GET_INTERP;
199100c8 3742 thr->cvcache = newHV();
54b9620d 3743 thr->threadsv = newAV();
940cb80d 3744 /* thr->threadsvp is set when find_threadsv is called */
199100c8
MB		 3745 thr->specific = newAV();
3746 thr->flags = THRf_R_JOINABLE;
3747 MUTEX_INIT(&thr->mutex);
3748 /* Handcraft thrsv similarly to mess_sv */
533c011a 3749 New(53, PL_thrsv, 1, SV);
199100c8 3750 Newz(53, xpv, 1, XPV);
533c011a
NIS		 3751 SvFLAGS(PL_thrsv) = SVt_PV;
3752 SvANY(PL_thrsv) = (void*)xpv;
3753 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
3754 SvPVX(PL_thrsv) = (char*)thr;
3755 SvCUR_set(PL_thrsv, sizeof(thr));
3756 SvLEN_set(PL_thrsv, sizeof(thr));
3757 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
3758 thr->oursv = PL_thrsv;
3759 PL_chopset = " \n-";
3967c732 3760 PL_dumpindent = 4;
533c011a
NIS		 3761
3762 MUTEX_LOCK(&PL_threads_mutex);
3763 PL_nthreads++;
199100c8
MB		 3764 thr->tid = 0;
3765 thr->next = thr;
3766 thr->prev = thr;
8dcd6f7b 3767 thr->thr_done = 0;
533c011a 3768 MUTEX_UNLOCK(&PL_threads_mutex);
199100c8 3769
4b026b9e 3770#ifdef HAVE_THREAD_INTERN
4f63d024 3771 Perl_init_thread_intern(thr);
235db74f
GS		 3772#endif
3773
3774#ifdef SET_THREAD_SELF
3775 SET_THREAD_SELF(thr);
199100c8
MB		 3776#else
3777 thr->self = pthread_self();
235db74f 3778#endif /* SET_THREAD_SELF */
06d86050 3779 PERL_SET_THX(thr);
199100c8
MB		 3780
3781 /*
411caa50
JH		 3782 * These must come after the thread self setting
3783 * because sv_setpvn does SvTAINT and the taint
3784 * fields thread selfness being set.
199100c8 3785 */
533c011a
NIS		 3786 PL_toptarget = NEWSV(0,0);
3787 sv_upgrade(PL_toptarget, SVt_PVFM);
3788 sv_setpvn(PL_toptarget, "", 0);
3789 PL_bodytarget = NEWSV(0,0);
3790 sv_upgrade(PL_bodytarget, SVt_PVFM);
3791 sv_setpvn(PL_bodytarget, "", 0);
3792 PL_formtarget = PL_bodytarget;
79cb57f6 3793 thr->errsv = newSVpvn("", 0);
78857c3c 3794 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
5c0ca799 3795
533c011a 3796 PL_maxscream = -1;
a2efc822 3797 PL_peepp = MEMBER_TO_FPTR(Perl_peep);
0b94c7bb
GS		 3798 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3799 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3800 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3801 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3802 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
533c011a
NIS		 3803 PL_regindent = 0;
3804 PL_reginterp_cnt = 0;
5c0ca799 3805
199100c8
MB		 3806 return thr;
3807}
4d1ff10f 3808#endif /* USE_5005THREADS */
199100c8 3809
93a17b20 3810void
864dbfa3 3811Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
93a17b20 3812{
971a9dd3 3813 SV *atsv;
57843af0 3814 line_t oldline = CopLINE(PL_curcop);
312caa8e 3815 CV *cv;
22921e25 3816 STRLEN len;
6224f72b 3817 int ret;
db36c5a1 3818 dJMPENV;
93a17b20 3819
76e3520e 3820 while (AvFILL(paramList) >= 0) {
312caa8e 3821 cv = (CV*)av_shift(paramList);
aefff11f 3822 if (PL_savebegin && (paramList == PL_beginav)) {
059a8bb7
JH		 3823 /* save PL_beginav for compiler */
3824 if (! PL_beginav_save)
3825 PL_beginav_save = newAV();
3826 av_push(PL_beginav_save, (SV*)cv);
3827 } else {
3828 SAVEFREESV(cv);
3829 }
14dd3ad8
GS		 3830#ifdef PERL_FLEXIBLE_EXCEPTIONS
3831 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_list_body), cv);
3832#else
3833 JMPENV_PUSH(ret);
3834#endif
6224f72b 3835 switch (ret) {
312caa8e 3836 case 0:
14dd3ad8
GS		 3837#ifndef PERL_FLEXIBLE_EXCEPTIONS
3838 call_list_body(cv);
3839#endif
971a9dd3 3840 atsv = ERRSV;
312caa8e
CS		 3841 (void)SvPV(atsv, len);
3842 if (len) {
971a9dd3 3843 STRLEN n_a;
312caa8e 3844 PL_curcop = &PL_compiling;
57843af0 3845 CopLINE_set(PL_curcop, oldline);
312caa8e
CS		 3846 if (paramList == PL_beginav)
3847 sv_catpv(atsv, "BEGIN failed--compilation aborted");
3848 else
4f25aa18
GS		 3849 Perl_sv_catpvf(aTHX_ atsv,
3850 "%s failed--call queue aborted",
7d30b5c4 3851 paramList == PL_checkav ? "CHECK"
4f25aa18
GS		 3852 : paramList == PL_initav ? "INIT"
3853 : "END");
312caa8e
CS		 3854 while (PL_scopestack_ix > oldscope)
3855 LEAVE;
14dd3ad8 3856 JMPENV_POP;
971a9dd3 3857 Perl_croak(aTHX_ "%s", SvPVx(atsv, n_a));
a0d0e21e 3858 }
85e6fe83 3859 break;
6224f72b 3860 case 1:
f86702cc 3861 STATUS_ALL_FAILURE;
85e6fe83 3862 /* FALL THROUGH */
6224f72b 3863 case 2:
85e6fe83 3864 /* my_exit() was called */
3280af22 3865 while (PL_scopestack_ix > oldscope)
2ae324a7 3866 LEAVE;
84902520 3867 FREETMPS;
3280af22 3868 PL_curstash = PL_defstash;
3280af22 3869 PL_curcop = &PL_compiling;
57843af0 3870 CopLINE_set(PL_curcop, oldline);
14dd3ad8 3871 JMPENV_POP;
cc3604b1 3872 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
3280af22 3873 if (paramList == PL_beginav)
cea2e8a9 3874 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
85e6fe83 3875 else
4f25aa18 3876 Perl_croak(aTHX_ "%s failed--call queue aborted",
7d30b5c4 3877 paramList == PL_checkav ? "CHECK"
4f25aa18
GS		 3878 : paramList == PL_initav ? "INIT"
3879 : "END");
85e6fe83 3880 }
f86702cc 3881 my_exit_jump();
85e6fe83 3882 /* NOTREACHED */
6224f72b 3883 case 3:
312caa8e
CS		 3884 if (PL_restartop) {
3885 PL_curcop = &PL_compiling;
57843af0 3886 CopLINE_set(PL_curcop, oldline);
312caa8e 3887 JMPENV_JUMP(3);
85e6fe83 3888 }
bf49b057 3889 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e
CS		 3890 FREETMPS;
3891 break;
8990e307 3892 }
14dd3ad8 3893 JMPENV_POP;
93a17b20 3894 }
93a17b20 3895}
93a17b20 3896
14dd3ad8 3897#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 3898STATIC void *
14dd3ad8 3899S_vcall_list_body(pTHX_ va_list args)
312caa8e 3900{
312caa8e 3901 CV *cv = va_arg(args, CV*);
14dd3ad8
GS		 3902 return call_list_body(cv);
3903}
3904#endif
312caa8e 3905
14dd3ad8
GS		 3906STATIC void *
3907S_call_list_body(pTHX_ CV *cv)
3908{
312caa8e 3909 PUSHMARK(PL_stack_sp);
864dbfa3 3910 call_sv((SV*)cv, G_EVAL|G_DISCARD);
312caa8e
CS		 3911 return NULL;
3912}
3913
f86702cc 3914void
864dbfa3 3915Perl_my_exit(pTHX_ U32 status)
f86702cc 3916{
8b73bbec 3917 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
a863c7d1 3918 thr, (unsigned long) status));
f86702cc 3919 switch (status) {
3920 case 0:
3921 STATUS_ALL_SUCCESS;
3922 break;
3923 case 1:
3924 STATUS_ALL_FAILURE;
3925 break;
3926 default:
3927 STATUS_NATIVE_SET(status);
3928 break;
3929 }
3930 my_exit_jump();
3931}
3932
3933void
864dbfa3 3934Perl_my_failure_exit(pTHX)
f86702cc 3935{
3936#ifdef VMS
3937 if (vaxc$errno & 1) {
4fdae800 3938 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
3939 STATUS_NATIVE_SET(44);
f86702cc 3940 }
3941 else {
ff0cee69 3942 if (!vaxc$errno && errno) /* unlikely */
4fdae800 3943 STATUS_NATIVE_SET(44);
f86702cc 3944 else
4fdae800 3945 STATUS_NATIVE_SET(vaxc$errno);
f86702cc 3946 }
3947#else
9b599b2a 3948 int exitstatus;
f86702cc 3949 if (errno & 255)
3950 STATUS_POSIX_SET(errno);
9b599b2a 3951 else {
ac27b0f5 3952 exitstatus = STATUS_POSIX >> 8;
9b599b2a
GS		 3953 if (exitstatus & 255)
3954 STATUS_POSIX_SET(exitstatus);
3955 else
3956 STATUS_POSIX_SET(255);
3957 }
f86702cc 3958#endif
3959 my_exit_jump();
93a17b20
LW		 3960}
3961
76e3520e 3962STATIC void
cea2e8a9 3963S_my_exit_jump(pTHX)
f86702cc 3964{
c09156bb 3965 register PERL_CONTEXT *cx;
f86702cc 3966 I32 gimme;
3967 SV **newsp;
3968
3280af22
NIS		 3969 if (PL_e_script) {
3970 SvREFCNT_dec(PL_e_script);
3971 PL_e_script = Nullsv;
f86702cc 3972 }
3973
3280af22 3974 POPSTACK_TO(PL_mainstack);
f86702cc 3975 if (cxstack_ix >= 0) {
3976 if (cxstack_ix > 0)
3977 dounwind(0);
3280af22 3978 POPBLOCK(cx,PL_curpm);
f86702cc 3979 LEAVE;
3980 }
ff0cee69 3981
6224f72b 3982 JMPENV_JUMP(2);
f86702cc 3983}
873ef191 3984
0cb96387 3985static I32
acfe0abc 3986read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen)
873ef191
GS		 3987{
3988 char *p, *nl;
3280af22 3989 p = SvPVX(PL_e_script);
873ef191 3990 nl = strchr(p, '\n');
3280af22 3991 nl = (nl) ? nl+1 : SvEND(PL_e_script);
7dfe3f66 3992 if (nl-p == 0) {
0cb96387 3993 filter_del(read_e_script);
873ef191 3994 return 0;
7dfe3f66 3995 }
873ef191 3996 sv_catpvn(buf_sv, p, nl-p);
3280af22 3997 sv_chop(PL_e_script, nl);
873ef191
GS		 3998 return 1;
3999}
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