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Re: Win32 status - progress !
[perl5.git] / perl.c
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
7114a2d2 24#if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
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/*
ccfc67b7
JH		 105=head1 Embedding Functions
106
954c1994
GS		 107=for apidoc perl_alloc
108
109Allocates a new Perl interpreter. See L<perlembed>.
110
111=cut
112*/
113
93a17b20 114PerlInterpreter *
cea2e8a9 115perl_alloc(void)
79072805 116{
cea2e8a9 117 PerlInterpreter *my_perl;
79072805 118
54aff467 119 /* New() needs interpreter, so call malloc() instead */
e8ee3774 120 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 121
06d86050 122 INIT_TLS_AND_INTERP;
dedcbb81 123 Zero(my_perl, 1, PerlInterpreter);
cea2e8a9 124 return my_perl;
79072805 125}
32e30700 126#endif /* PERL_IMPLICIT_SYS */
79072805 127
954c1994
GS		 128/*
129=for apidoc perl_construct
130
131Initializes a new Perl interpreter. See L<perlembed>.
132
133=cut
134*/
135
79072805 136void
0cb96387 137perl_construct(pTHXx)
79072805 138{
4d1ff10f 139#ifdef USE_5005THREADS
a863c7d1 140#ifndef FAKE_THREADS
e1f15930 141 struct perl_thread *thr = NULL;
a863c7d1 142#endif /* FAKE_THREADS */
4d1ff10f 143#endif /* USE_5005THREADS */
ba869deb 144
8990e307 145#ifdef MULTIPLICITY
54aff467 146 init_interp();
ac27b0f5 147 PL_perl_destruct_level = 1;
54aff467
GS		 148#else
149 if (PL_perl_destruct_level > 0)
150 init_interp();
151#endif
152
33f46ff6 153 /* Init the real globals (and main thread)? */
3280af22 154 if (!PL_linestr) {
4d1ff10f 155#ifdef USE_5005THREADS
533c011a 156 MUTEX_INIT(&PL_sv_mutex);
a863c7d1
MB		 157 /*
158 * Safe to use basic SV functions from now on (though
159 * not things like mortals or tainting yet).
160 */
533c011a
NIS		 161 MUTEX_INIT(&PL_eval_mutex);
162 COND_INIT(&PL_eval_cond);
163 MUTEX_INIT(&PL_threads_mutex);
164 COND_INIT(&PL_nthreads_cond);
ba869deb 165# ifdef EMULATE_ATOMIC_REFCOUNTS
533c011a 166 MUTEX_INIT(&PL_svref_mutex);
ba869deb 167# endif /* EMULATE_ATOMIC_REFCOUNTS */
a863c7d1 168
5ff3f7a4 169 MUTEX_INIT(&PL_cred_mutex);
3d35f11b
GS		 170 MUTEX_INIT(&PL_sv_lock_mutex);
171 MUTEX_INIT(&PL_fdpid_mutex);
5ff3f7a4 172
199100c8 173 thr = init_main_thread();
4d1ff10f 174#endif /* USE_5005THREADS */
11343788 175
14dd3ad8 176#ifdef PERL_FLEXIBLE_EXCEPTIONS
0b94c7bb 177 PL_protect = MEMBER_TO_FPTR(Perl_default_protect); /* for exceptions */
14dd3ad8 178#endif
312caa8e 179
2aea9f8a
GS		 180 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
181
3280af22
NIS		 182 PL_linestr = NEWSV(65,79);
183 sv_upgrade(PL_linestr,SVt_PVIV);
79072805 184
3280af22 185 if (!SvREADONLY(&PL_sv_undef)) {
d689ffdd
JP		 186 /* set read-only and try to insure than we wont see REFCNT==0
187 very often */
188
3280af22
NIS		 189 SvREADONLY_on(&PL_sv_undef);
190 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
79072805 191
3280af22
NIS		 192 sv_setpv(&PL_sv_no,PL_No);
193 SvNV(&PL_sv_no);
194 SvREADONLY_on(&PL_sv_no);
195 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
79072805 196
3280af22
NIS		 197 sv_setpv(&PL_sv_yes,PL_Yes);
198 SvNV(&PL_sv_yes);
199 SvREADONLY_on(&PL_sv_yes);
200 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
6e72f9df 201 }
79072805 202
cea2e8a9 203 PL_sighandlerp = Perl_sighandler;
3280af22 204 PL_pidstatus = newHV();
44a8e56a 205
79072805
LW		 206#ifdef MSDOS
207 /*
208 * There is no way we can refer to them from Perl so close them to save
209 * space. The other alternative would be to provide STDAUX and STDPRN
210 * filehandles.
211 */
2b96b0a5
JH		 212 (void)PerlIO_close(PerlIO_importFILE(stdaux, 0));
213 (void)PerlIO_close(PerlIO_importFILE(stdprn, 0));
79072805
LW		 214#endif
215 }
216
8bfdd7d9 217 PL_rs = newSVpvn("\n", 1);
dc92893f 218
cea2e8a9 219 init_stacks();
79072805 220
748a9306 221 init_ids();
3280af22 222 PL_lex_state = LEX_NOTPARSING;
a5f75d66 223
312caa8e 224 JMPENV_BOOTSTRAP;
f86702cc 225 STATUS_ALL_SUCCESS;
226
0672f40e 227 init_i18nl10n(1);
36477c24 228 SET_NUMERIC_STANDARD();
0b5b802d 229
a7cb1f99
GS		 230 {
231 U8 *s;
232 PL_patchlevel = NEWSV(0,4);
155aba94 233 (void)SvUPGRADE(PL_patchlevel, SVt_PVNV);
a7cb1f99 234 if (PERL_REVISION > 127 || PERL_VERSION > 127 || PERL_SUBVERSION > 127)
806e7201 235 SvGROW(PL_patchlevel, UTF8_MAXLEN*3+1);
a7cb1f99 236 s = (U8*)SvPVX(PL_patchlevel);
9041c2e3
NIS		 237 /* Build version strings using "native" characters */
238 s = uvchr_to_utf8(s, (UV)PERL_REVISION);
239 s = uvchr_to_utf8(s, (UV)PERL_VERSION);
240 s = uvchr_to_utf8(s, (UV)PERL_SUBVERSION);
a7cb1f99
GS		 241 *s = '\0';
242 SvCUR_set(PL_patchlevel, s - (U8*)SvPVX(PL_patchlevel));
243 SvPOK_on(PL_patchlevel);
244 SvNVX(PL_patchlevel) = (NV)PERL_REVISION
245 + ((NV)PERL_VERSION / (NV)1000)
cceca5ed 246#if defined(PERL_SUBVERSION) && PERL_SUBVERSION > 0
a7cb1f99 247 + ((NV)PERL_SUBVERSION / (NV)1000000)
a5f75d66 248#endif
a7cb1f99
GS		 249 ;
250 SvNOK_on(PL_patchlevel); /* dual valued */
251 SvUTF8_on(PL_patchlevel);
252 SvREADONLY_on(PL_patchlevel);
253 }
79072805 254
ab821d7f 255#if defined(LOCAL_PATCH_COUNT)
3280af22 256 PL_localpatches = local_patches; /* For possible -v */
ab821d7f 257#endif
258
52853b95
GS		 259#ifdef HAVE_INTERP_INTERN
260 sys_intern_init();
261#endif
262
3a1ee7e8 263 PerlIO_init(aTHX); /* Hook to IO system */
760ac839 264
3280af22
NIS		 265 PL_fdpid = newAV(); /* for remembering popen pids by fd */
266 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
24944567 267 PL_errors = newSVpvn("",0);
1fcf4c12 268#ifdef USE_ITHREADS
13137afc
AB		 269 PL_regex_padav = newAV();
270 av_push(PL_regex_padav,(SV*)newAV()); /* First entry is an array of empty elements */
271 PL_regex_pad = AvARRAY(PL_regex_padav);
1fcf4c12 272#endif
e5dd39fc
AB		 273#ifdef USE_REENTRANT_API
274 New(31337, PL_reentrant_buffer,1, REBUF);
275 New(31337, PL_reentrant_buffer->tmbuff,1, struct tm);
276#endif
3d47000e
AB		 277
278 /* Note that strtab is a rather special HV. Assumptions are made
279 about not iterating on it, and not adding tie magic to it.
280 It is properly deallocated in perl_destruct() */
281 PL_strtab = newHV();
282
283#ifdef USE_5005THREADS
284 MUTEX_INIT(&PL_strtab_mutex);
285#endif
286 HvSHAREKEYS_off(PL_strtab); /* mandatory */
287 hv_ksplit(PL_strtab, 512);
288
0631ea03
AB		 289#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
290 _dyld_lookup_and_bind
291 ("__environ", (unsigned long *) &environ_pointer, NULL);
292#endif /* environ */
293
294#ifdef USE_ENVIRON_ARRAY
295 PL_origenviron = environ;
296#endif
297
8990e307 298 ENTER;
79072805
LW		 299}
300
954c1994
GS		 301/*
302=for apidoc perl_destruct
303
304Shuts down a Perl interpreter. See L<perlembed>.
305
306=cut
307*/
308
31d77e54 309int
0cb96387 310perl_destruct(pTHXx)
79072805 311{
7c474504 312 volatile int destruct_level; /* 0=none, 1=full, 2=full with checks */
a0d0e21e 313 HV *hv;
4d1ff10f 314#ifdef USE_5005THREADS
33f46ff6 315 Thread t;
cea2e8a9 316 dTHX;
4d1ff10f 317#endif /* USE_5005THREADS */
8990e307 318
7766f137
GS		 319 /* wait for all pseudo-forked children to finish */
320 PERL_WAIT_FOR_CHILDREN;
321
4d1ff10f 322#ifdef USE_5005THREADS
0f15f207 323#ifndef FAKE_THREADS
8023c3ce
MB		 324 /* Pass 1 on any remaining threads: detach joinables, join zombies */
325 retry_cleanup:
533c011a 326 MUTEX_LOCK(&PL_threads_mutex);
bf49b057 327 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 328 "perl_destruct: waiting for %d threads...\n",
533c011a 329 PL_nthreads - 1));
33f46ff6 330 for (t = thr->next; t != thr; t = t->next) {
605e5515
MB		 331 MUTEX_LOCK(&t->mutex);
332 switch (ThrSTATE(t)) {
333 AV *av;
c7848ba1 334 case THRf_ZOMBIE:
bf49b057 335 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 336 "perl_destruct: joining zombie %p\n", t));
605e5515
MB		 337 ThrSETSTATE(t, THRf_DEAD);
338 MUTEX_UNLOCK(&t->mutex);
533c011a 339 PL_nthreads--;
8023c3ce
MB		 340 /*
341 * The SvREFCNT_dec below may take a long time (e.g. av
342 * may contain an object scalar whose destructor gets
343 * called) so we have to unlock threads_mutex and start
344 * all over again.
345 */
533c011a 346 MUTEX_UNLOCK(&PL_threads_mutex);
ea0efc06 347 JOIN(t, &av);
605e5515 348 SvREFCNT_dec((SV*)av);
bf49b057 349 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 350 "perl_destruct: joined zombie %p OK\n", t));
8023c3ce 351 goto retry_cleanup;
c7848ba1 352 case THRf_R_JOINABLE:
bf49b057 353 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1
MB		 354 "perl_destruct: detaching thread %p\n", t));
355 ThrSETSTATE(t, THRf_R_DETACHED);
ac27b0f5 356 /*
c7848ba1
MB		 357 * We unlock threads_mutex and t->mutex in the opposite order
358 * from which we locked them just so that DETACH won't
359 * deadlock if it panics. It's only a breach of good style
360 * not a bug since they are unlocks not locks.
361 */
533c011a 362 MUTEX_UNLOCK(&PL_threads_mutex);
c7848ba1
MB		 363 DETACH(t);
364 MUTEX_UNLOCK(&t->mutex);
8023c3ce 365 goto retry_cleanup;
c7848ba1 366 default:
bf49b057 367 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1
MB		 368 "perl_destruct: ignoring %p (state %u)\n",
369 t, ThrSTATE(t)));
370 MUTEX_UNLOCK(&t->mutex);
c7848ba1 371 /* fall through and out */
33f46ff6
MB		 372 }
373 }
8023c3ce
MB		 374 /* We leave the above "Pass 1" loop with threads_mutex still locked */
375
376 /* Pass 2 on remaining threads: wait for the thread count to drop to one */
533c011a 377 while (PL_nthreads > 1)
11343788 378 {
bf49b057 379 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 380 "perl_destruct: final wait for %d threads\n",
533c011a
NIS		 381 PL_nthreads - 1));
382 COND_WAIT(&PL_nthreads_cond, &PL_threads_mutex);
11343788
MB		 383 }
384 /* At this point, we're the last thread */
533c011a 385 MUTEX_UNLOCK(&PL_threads_mutex);
bf49b057 386 DEBUG_S(PerlIO_printf(Perl_debug_log, "perl_destruct: armageddon has arrived\n"));
533c011a
NIS		 387 MUTEX_DESTROY(&PL_threads_mutex);
388 COND_DESTROY(&PL_nthreads_cond);
b57a092c 389 PL_nthreads--;
0f15f207 390#endif /* !defined(FAKE_THREADS) */
4d1ff10f 391#endif /* USE_5005THREADS */
11343788 392
3280af22 393 destruct_level = PL_perl_destruct_level;
4633a7c4
LW		 394#ifdef DEBUGGING
395 {
396 char *s;
155aba94 397 if ((s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL"))) {
5f05dabc 398 int i = atoi(s);
399 if (destruct_level < i)
400 destruct_level = i;
401 }
4633a7c4
LW		 402 }
403#endif
404
31d77e54
AB		 405
406 if(PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB		 407 dJMPENV;
408 int x = 0;
409
410 JMPENV_PUSH(x);
411 if (PL_endav && !PL_minus_c)
412 call_list(PL_scopestack_ix, PL_endav);
413 JMPENV_POP;
26f423df 414 }
f3faeb53 415 LEAVE;
a0d0e21e
LW		 416 FREETMPS;
417
ff0cee69 418 /* We must account for everything. */
419
420 /* Destroy the main CV and syntax tree */
3280af22
NIS		 421 if (PL_main_root) {
422 PL_curpad = AvARRAY(PL_comppad);
423 op_free(PL_main_root);
424 PL_main_root = Nullop;
a0d0e21e 425 }
3280af22
NIS		 426 PL_curcop = &PL_compiling;
427 PL_main_start = Nullop;
428 SvREFCNT_dec(PL_main_cv);
429 PL_main_cv = Nullcv;
24d3c518 430 PL_dirty = TRUE;
ff0cee69 431
13621cfb
NIS		 432 /* Tell PerlIO we are about to tear things apart in case
433 we have layers which are using resources that should
434 be cleaned up now.
435 */
436
437 PerlIO_destruct(aTHX);
438
3280af22 439 if (PL_sv_objcount) {
a0d0e21e
LW		 440 /*
441 * Try to destruct global references. We do this first so that the
442 * destructors and destructees still exist. Some sv's might remain.
443 * Non-referenced objects are on their own.
444 */
a0d0e21e 445 sv_clean_objs();
8990e307
LW		 446 }
447
5cd24f17 448 /* unhook hooks which will soon be, or use, destroyed data */
3280af22
NIS		 449 SvREFCNT_dec(PL_warnhook);
450 PL_warnhook = Nullsv;
451 SvREFCNT_dec(PL_diehook);
452 PL_diehook = Nullsv;
5cd24f17 453
4b556e6c 454 /* call exit list functions */
3280af22 455 while (PL_exitlistlen-- > 0)
acfe0abc 456 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 457
3280af22 458 Safefree(PL_exitlist);
4b556e6c 459
a0d0e21e 460 if (destruct_level == 0){
8990e307 461
a0d0e21e 462 DEBUG_P(debprofdump());
ac27b0f5 463
56a2bab7
NIS		 464#if defined(PERLIO_LAYERS)
465 /* No more IO - including error messages ! */
466 PerlIO_cleanup(aTHX);
467#endif
468
a0d0e21e 469 /* The exit() function will do everything that needs doing. */
31d77e54 470 return STATUS_NATIVE_EXPORT;;
a0d0e21e 471 }
5dd60ef7 472
551a8b83 473 /* jettison our possibly duplicated environment */
4b647fb0
DM		 474 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
475 * so we certainly shouldn't free it here
476 */
477#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
551a8b83
JH		 478 if (environ != PL_origenviron) {
479 I32 i;
480
481 for (i = 0; environ[i]; i++)
4b420006 482 safesysfree(environ[i]);
0631ea03 483
4b420006
JH		 484 /* Must use safesysfree() when working with environ. */
485 safesysfree(environ);
551a8b83
JH		 486
487 environ = PL_origenviron;
488 }
489#endif
490
5f8cb046
DM		 491#ifdef USE_ITHREADS
492 /* the syntax tree is shared between clones
493 * so op_free(PL_main_root) only ReREFCNT_dec's
494 * REGEXPs in the parent interpreter
495 * we need to manually ReREFCNT_dec for the clones
496 */
497 {
498 I32 i = AvFILLp(PL_regex_padav) + 1;
499 SV **ary = AvARRAY(PL_regex_padav);
500
501 while (i) {
35061a7e 502 SV *resv = ary[--i];
ba89bb6e 503 REGEXP *re = INT2PTR(REGEXP *,SvIVX(resv));
35061a7e
DM		 504
505 if (SvFLAGS(resv) & SVf_BREAK) {
577e12cc 506 /* this is PL_reg_curpm, already freed
35061a7e
DM		 507 * flag is set in regexec.c:S_regtry
508 */
509 SvFLAGS(resv) &= ~SVf_BREAK;
3a1ee7e8 510 }
1cc8b4c5
AB		 511 else if(SvREPADTMP(resv)) {
512 SvREPADTMP_off(resv);
513 }
35061a7e 514 else {
5f8cb046
DM		 515 ReREFCNT_dec(re);
516 }
517 }
518 }
519 SvREFCNT_dec(PL_regex_padav);
520 PL_regex_padav = Nullav;
521 PL_regex_pad = NULL;
522#endif
523
5f05dabc 524 /* loosen bonds of global variables */
525
3280af22
NIS		 526 if(PL_rsfp) {
527 (void)PerlIO_close(PL_rsfp);
528 PL_rsfp = Nullfp;
8ebc5c01 529 }
530
531 /* Filters for program text */
3280af22
NIS		 532 SvREFCNT_dec(PL_rsfp_filters);
533 PL_rsfp_filters = Nullav;
8ebc5c01 534
535 /* switches */
3280af22
NIS		 536 PL_preprocess = FALSE;
537 PL_minus_n = FALSE;
538 PL_minus_p = FALSE;
539 PL_minus_l = FALSE;
540 PL_minus_a = FALSE;
541 PL_minus_F = FALSE;
542 PL_doswitches = FALSE;
599cee73 543 PL_dowarn = G_WARN_OFF;
3280af22
NIS		 544 PL_doextract = FALSE;
545 PL_sawampersand = FALSE; /* must save all match strings */
3280af22
NIS		 546 PL_unsafe = FALSE;
547
548 Safefree(PL_inplace);
549 PL_inplace = Nullch;
a7cb1f99 550 SvREFCNT_dec(PL_patchlevel);
3280af22
NIS		 551
552 if (PL_e_script) {
553 SvREFCNT_dec(PL_e_script);
554 PL_e_script = Nullsv;
8ebc5c01 555 }
556
bc0a45ed
DM		 557 while (--PL_origargc >= 0) {
558 Safefree(PL_origargv[PL_origargc]);
559 }
560 Safefree(PL_origargv);
561
8ebc5c01 562 /* magical thingies */
563
7889fe52
NIS		 564 SvREFCNT_dec(PL_ofs_sv); /* $, */
565 PL_ofs_sv = Nullsv;
5f05dabc 566
7889fe52
NIS		 567 SvREFCNT_dec(PL_ors_sv); /* $\ */
568 PL_ors_sv = Nullsv;
8ebc5c01 569
3280af22
NIS		 570 SvREFCNT_dec(PL_rs); /* $/ */
571 PL_rs = Nullsv;
dc92893f 572
d33b2eba
GS		 573 PL_multiline = 0; /* $* */
574 Safefree(PL_osname); /* $^O */
575 PL_osname = Nullch;
5f05dabc 576
3280af22
NIS		 577 SvREFCNT_dec(PL_statname);
578 PL_statname = Nullsv;
579 PL_statgv = Nullgv;
5f05dabc 580
8ebc5c01 581 /* defgv, aka *_ should be taken care of elsewhere */
582
8ebc5c01 583 /* clean up after study() */
3280af22
NIS		 584 SvREFCNT_dec(PL_lastscream);
585 PL_lastscream = Nullsv;
586 Safefree(PL_screamfirst);
587 PL_screamfirst = 0;
588 Safefree(PL_screamnext);
589 PL_screamnext = 0;
8ebc5c01 590
7d5ea4e7
GS		 591 /* float buffer */
592 Safefree(PL_efloatbuf);
593 PL_efloatbuf = Nullch;
594 PL_efloatsize = 0;
595
8ebc5c01 596 /* startup and shutdown function lists */
3280af22 597 SvREFCNT_dec(PL_beginav);
5a837c8f 598 SvREFCNT_dec(PL_beginav_save);
3280af22 599 SvREFCNT_dec(PL_endav);
7d30b5c4 600 SvREFCNT_dec(PL_checkav);
3280af22
NIS		 601 SvREFCNT_dec(PL_initav);
602 PL_beginav = Nullav;
5a837c8f 603 PL_beginav_save = Nullav;
3280af22 604 PL_endav = Nullav;
7d30b5c4 605 PL_checkav = Nullav;
3280af22 606 PL_initav = Nullav;
5618dfe8 607
8ebc5c01 608 /* shortcuts just get cleared */
3280af22 609 PL_envgv = Nullgv;
3280af22
NIS		 610 PL_incgv = Nullgv;
611 PL_hintgv = Nullgv;
612 PL_errgv = Nullgv;
613 PL_argvgv = Nullgv;
614 PL_argvoutgv = Nullgv;
615 PL_stdingv = Nullgv;
bf49b057 616 PL_stderrgv = Nullgv;
3280af22
NIS		 617 PL_last_in_gv = Nullgv;
618 PL_replgv = Nullgv;
5c831c24 619 PL_debstash = Nullhv;
8ebc5c01 620
621 /* reset so print() ends up where we expect */
622 setdefout(Nullgv);
5c831c24 623
7a1c5554
GS		 624 SvREFCNT_dec(PL_argvout_stack);
625 PL_argvout_stack = Nullav;
8ebc5c01 626
5c831c24
GS		 627 SvREFCNT_dec(PL_modglobal);
628 PL_modglobal = Nullhv;
629 SvREFCNT_dec(PL_preambleav);
630 PL_preambleav = Nullav;
631 SvREFCNT_dec(PL_subname);
632 PL_subname = Nullsv;
633 SvREFCNT_dec(PL_linestr);
634 PL_linestr = Nullsv;
635 SvREFCNT_dec(PL_pidstatus);
636 PL_pidstatus = Nullhv;
637 SvREFCNT_dec(PL_toptarget);
638 PL_toptarget = Nullsv;
639 SvREFCNT_dec(PL_bodytarget);
640 PL_bodytarget = Nullsv;
641 PL_formtarget = Nullsv;
642
d33b2eba 643 /* free locale stuff */
b9582b6a 644#ifdef USE_LOCALE_COLLATE
d33b2eba
GS		 645 Safefree(PL_collation_name);
646 PL_collation_name = Nullch;
b9582b6a 647#endif
d33b2eba 648
b9582b6a 649#ifdef USE_LOCALE_NUMERIC
d33b2eba
GS		 650 Safefree(PL_numeric_name);
651 PL_numeric_name = Nullch;
a453c169 652 SvREFCNT_dec(PL_numeric_radix_sv);
b9582b6a 653#endif
d33b2eba 654
5c831c24
GS		 655 /* clear utf8 character classes */
656 SvREFCNT_dec(PL_utf8_alnum);
657 SvREFCNT_dec(PL_utf8_alnumc);
658 SvREFCNT_dec(PL_utf8_ascii);
659 SvREFCNT_dec(PL_utf8_alpha);
660 SvREFCNT_dec(PL_utf8_space);
661 SvREFCNT_dec(PL_utf8_cntrl);
662 SvREFCNT_dec(PL_utf8_graph);
663 SvREFCNT_dec(PL_utf8_digit);
664 SvREFCNT_dec(PL_utf8_upper);
665 SvREFCNT_dec(PL_utf8_lower);
666 SvREFCNT_dec(PL_utf8_print);
667 SvREFCNT_dec(PL_utf8_punct);
668 SvREFCNT_dec(PL_utf8_xdigit);
669 SvREFCNT_dec(PL_utf8_mark);
670 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 671 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 672 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 673 SvREFCNT_dec(PL_utf8_tofold);
5c831c24
GS		 674 PL_utf8_alnum = Nullsv;
675 PL_utf8_alnumc = Nullsv;
676 PL_utf8_ascii = Nullsv;
677 PL_utf8_alpha = Nullsv;
678 PL_utf8_space = Nullsv;
679 PL_utf8_cntrl = Nullsv;
680 PL_utf8_graph = Nullsv;
681 PL_utf8_digit = Nullsv;
682 PL_utf8_upper = Nullsv;
683 PL_utf8_lower = Nullsv;
684 PL_utf8_print = Nullsv;
685 PL_utf8_punct = Nullsv;
686 PL_utf8_xdigit = Nullsv;
687 PL_utf8_mark = Nullsv;
688 PL_utf8_toupper = Nullsv;
689 PL_utf8_totitle = Nullsv;
690 PL_utf8_tolower = Nullsv;
b4e400f9 691 PL_utf8_tofold = Nullsv;
5c831c24 692
971a9dd3
GS		 693 if (!specialWARN(PL_compiling.cop_warnings))
694 SvREFCNT_dec(PL_compiling.cop_warnings);
5c831c24 695 PL_compiling.cop_warnings = Nullsv;
ac27b0f5
NIS		 696 if (!specialCopIO(PL_compiling.cop_io))
697 SvREFCNT_dec(PL_compiling.cop_io);
698 PL_compiling.cop_io = Nullsv;
f4dd75d9
GS		 699#ifdef USE_ITHREADS
700 Safefree(CopFILE(&PL_compiling));
701 CopFILE(&PL_compiling) = Nullch;
702 Safefree(CopSTASHPV(&PL_compiling));
703#else
01724ea0 704 SvREFCNT_dec(CopFILEGV(&PL_compiling));
f4dd75d9
GS		 705 CopFILEGV(&PL_compiling) = Nullgv;
706 /* cop_stash is not refcounted */
01724ea0 707#endif
5c831c24 708
a0d0e21e 709 /* Prepare to destruct main symbol table. */
5f05dabc 710
3280af22
NIS		 711 hv = PL_defstash;
712 PL_defstash = 0;
a0d0e21e 713 SvREFCNT_dec(hv);
5c831c24
GS		 714 SvREFCNT_dec(PL_curstname);
715 PL_curstname = Nullsv;
a0d0e21e 716
5a844595
GS		 717 /* clear queued errors */
718 SvREFCNT_dec(PL_errors);
719 PL_errors = Nullsv;
720
a0d0e21e 721 FREETMPS;
0453d815 722 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
3280af22 723 if (PL_scopestack_ix != 0)
0453d815
PM		 724 Perl_warner(aTHX_ WARN_INTERNAL,
725 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
3280af22
NIS		 726 (long)PL_scopestack_ix);
727 if (PL_savestack_ix != 0)
0453d815
PM		 728 Perl_warner(aTHX_ WARN_INTERNAL,
729 "Unbalanced saves: %ld more saves than restores\n",
3280af22
NIS		 730 (long)PL_savestack_ix);
731 if (PL_tmps_floor != -1)
0453d815 732 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced tmps: %ld more allocs than frees\n",
3280af22 733 (long)PL_tmps_floor + 1);
a0d0e21e 734 if (cxstack_ix != -1)
0453d815 735 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced context: %ld more PUSHes than POPs\n",
ff0cee69 736 (long)cxstack_ix + 1);
a0d0e21e 737 }
8990e307
LW		 738
739 /* Now absolutely destruct everything, somehow or other, loops or no. */
d33b2eba 740 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
3280af22 741 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
5226ed68
JH		 742
743 /* the 2 is for PL_fdpid and PL_strtab */
744 while (PL_sv_count > 2 && sv_clean_all())
745 ;
746
d33b2eba
GS		 747 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
748 SvFLAGS(PL_fdpid) |= SVt_PVAV;
3280af22
NIS		 749 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
750 SvFLAGS(PL_strtab) |= SVt_PVHV;
d33b2eba 751
d4777f27
GS		 752 AvREAL_off(PL_fdpid); /* no surviving entries */
753 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
d33b2eba
GS		 754 PL_fdpid = Nullav;
755
6c644e78
GS		 756#ifdef HAVE_INTERP_INTERN
757 sys_intern_clear();
758#endif
759
6e72f9df 760 /* Destruct the global string table. */
761 {
762 /* Yell and reset the HeVAL() slots that are still holding refcounts,
763 * so that sv_free() won't fail on them.
764 */
765 I32 riter;
766 I32 max;
767 HE *hent;
768 HE **array;
769
770 riter = 0;
3280af22
NIS		 771 max = HvMAX(PL_strtab);
772 array = HvARRAY(PL_strtab);
6e72f9df 773 hent = array[0];
774 for (;;) {
0453d815
PM		 775 if (hent && ckWARN_d(WARN_INTERNAL)) {
776 Perl_warner(aTHX_ WARN_INTERNAL,
777 "Unbalanced string table refcount: (%d) for \"%s\"",
6e72f9df 778 HeVAL(hent) - Nullsv, HeKEY(hent));
779 HeVAL(hent) = Nullsv;
780 hent = HeNEXT(hent);
781 }
782 if (!hent) {
783 if (++riter > max)
784 break;
785 hent = array[riter];
786 }
787 }
788 }
3280af22 789 SvREFCNT_dec(PL_strtab);
6e72f9df 790
e652bb2f 791#ifdef USE_ITHREADS
a0739874
DM		 792 /* free the pointer table used for cloning */
793 ptr_table_free(PL_ptr_table);
53186e96 794#endif
a0739874 795
d33b2eba
GS		 796 /* free special SVs */
797
798 SvREFCNT(&PL_sv_yes) = 0;
799 sv_clear(&PL_sv_yes);
800 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 801 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS		 802
803 SvREFCNT(&PL_sv_no) = 0;
804 sv_clear(&PL_sv_no);
805 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 806 SvFLAGS(&PL_sv_no) = 0;
01724ea0
GS		 807
808 SvREFCNT(&PL_sv_undef) = 0;
809 SvREADONLY_off(&PL_sv_undef);
d33b2eba 810
0453d815
PM		 811 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
812 Perl_warner(aTHX_ WARN_INTERNAL,"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 813
56a2bab7 814#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS		 815 /* No more IO - including error messages ! */
816 PerlIO_cleanup(aTHX);
817#endif
818
3280af22 819 Safefree(PL_origfilename);
3280af22 820 Safefree(PL_reg_start_tmp);
5c5e4c24
IZ		 821 if (PL_reg_curpm)
822 Safefree(PL_reg_curpm);
82ba1be6 823 Safefree(PL_reg_poscache);
3280af22
NIS		 824 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
825 Safefree(PL_op_mask);
cf36064f
GS		 826 Safefree(PL_psig_ptr);
827 Safefree(PL_psig_name);
2c2666fc 828 Safefree(PL_bitcount);
ce08f86c 829 Safefree(PL_psig_pend);
6e72f9df 830 nuke_stacks();
3280af22 831 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
ac27b0f5 832
a0d0e21e 833 DEBUG_P(debprofdump());
4d1ff10f 834#ifdef USE_5005THREADS
5f08fbcd 835 MUTEX_DESTROY(&PL_strtab_mutex);
533c011a
NIS		 836 MUTEX_DESTROY(&PL_sv_mutex);
837 MUTEX_DESTROY(&PL_eval_mutex);
5ff3f7a4 838 MUTEX_DESTROY(&PL_cred_mutex);
3d35f11b 839 MUTEX_DESTROY(&PL_fdpid_mutex);
533c011a 840 COND_DESTROY(&PL_eval_cond);
11d617a5
GS		 841#ifdef EMULATE_ATOMIC_REFCOUNTS
842 MUTEX_DESTROY(&PL_svref_mutex);
843#endif /* EMULATE_ATOMIC_REFCOUNTS */
fc36a67e 844
8023c3ce 845 /* As the penultimate thing, free the non-arena SV for thrsv */
533c011a
NIS		 846 Safefree(SvPVX(PL_thrsv));
847 Safefree(SvANY(PL_thrsv));
848 Safefree(PL_thrsv);
849 PL_thrsv = Nullsv;
4d1ff10f 850#endif /* USE_5005THREADS */
d33b2eba 851
e5dd39fc
AB		 852#ifdef USE_REENTRANT_API
853 Safefree(PL_reentrant_buffer->tmbuff);
854 Safefree(PL_reentrant_buffer);
855#endif
856
612f20c3
GS		 857 sv_free_arenas();
858
fc36a67e 859 /* As the absolutely last thing, free the non-arena SV for mess() */
860
3280af22 861 if (PL_mess_sv) {
9c63abab
GS		 862 /* it could have accumulated taint magic */
863 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
864 MAGIC* mg;
865 MAGIC* moremagic;
866 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
867 moremagic = mg->mg_moremagic;
14befaf4
DM		 868 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
869 && mg->mg_len >= 0)
9c63abab
GS		 870 Safefree(mg->mg_ptr);
871 Safefree(mg);
872 }
873 }
fc36a67e 874 /* we know that type >= SVt_PV */
155aba94 875 (void)SvOOK_off(PL_mess_sv);
3280af22
NIS		 876 Safefree(SvPVX(PL_mess_sv));
877 Safefree(SvANY(PL_mess_sv));
878 Safefree(PL_mess_sv);
879 PL_mess_sv = Nullsv;
fc36a67e 880 }
31d77e54 881 return STATUS_NATIVE_EXPORT;
79072805
LW		 882}
883
954c1994
GS		 884/*
885=for apidoc perl_free
886
887Releases a Perl interpreter. See L<perlembed>.
888
889=cut
890*/
891
79072805 892void
0cb96387 893perl_free(pTHXx)
79072805 894{
acfe0abc 895#if defined(WIN32) || defined(NETWARE)
ce3e5b80 896# if defined(PERL_IMPLICIT_SYS)
acfe0abc
GS		 897# ifdef NETWARE
898 void *host = nw_internal_host;
899# else
900 void *host = w32_internal_host;
901# endif
ce3e5b80 902 PerlMem_free(aTHXx);
acfe0abc
GS		 903# ifdef NETWARE
904 nw5_delete_internal_host(host);
905# else
906 win32_delete_internal_host(host);
907# endif
1c0ca838
GS		 908# else
909 PerlMem_free(aTHXx);
910# endif
acfe0abc
GS		 911#else
912 PerlMem_free(aTHXx);
76e3520e 913#endif
79072805
LW		 914}
915
4b556e6c 916void
864dbfa3 917Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 918{
3280af22
NIS		 919 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
920 PL_exitlist[PL_exitlistlen].fn = fn;
921 PL_exitlist[PL_exitlistlen].ptr = ptr;
922 ++PL_exitlistlen;
4b556e6c
JD		 923}
924
954c1994
GS		 925/*
926=for apidoc perl_parse
927
928Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
929
930=cut
931*/
932
79072805 933int
0cb96387 934perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 935{
6224f72b 936 I32 oldscope;
6224f72b 937 int ret;
db36c5a1 938 dJMPENV;
4d1ff10f 939#ifdef USE_5005THREADS
cea2e8a9
GS		 940 dTHX;
941#endif
8d063cd8 942
a687059c
LW		 943#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
944#ifdef IAMSUID
945#undef IAMSUID
cea2e8a9 946 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
a687059c
LW		 947setuid perl scripts securely.\n");
948#endif
949#endif
950
3280af22 951 PL_origargc = argc;
bc0a45ed
DM		 952 {
953 /* we copy rather than point to argv
954 * since perl_clone will copy and perl_destruct
3a1ee7e8 955 * has no way of knowing if we've made a copy or
bc0a45ed
DM		 956 * just point to argv
957 */
958 int i = PL_origargc;
959 New(0, PL_origargv, i+1, char*);
960 PL_origargv[i] = '\0';
961 while (i-- > 0) {
962 PL_origargv[i] = savepv(argv[i]);
963 }
964 }
965
0631ea03 966
a0d0e21e 967
3280af22 968 if (PL_do_undump) {
a0d0e21e
LW		 969
970 /* Come here if running an undumped a.out. */
971
3280af22
NIS		 972 PL_origfilename = savepv(argv[0]);
973 PL_do_undump = FALSE;
a0d0e21e 974 cxstack_ix = -1; /* start label stack again */
748a9306 975 init_ids();
a0d0e21e
LW		 976 init_postdump_symbols(argc,argv,env);
977 return 0;
978 }
979
3280af22
NIS		 980 if (PL_main_root) {
981 PL_curpad = AvARRAY(PL_comppad);
982 op_free(PL_main_root);
983 PL_main_root = Nullop;
ff0cee69 984 }
3280af22
NIS		 985 PL_main_start = Nullop;
986 SvREFCNT_dec(PL_main_cv);
987 PL_main_cv = Nullcv;
79072805 988
3280af22
NIS		 989 time(&PL_basetime);
990 oldscope = PL_scopestack_ix;
599cee73 991 PL_dowarn = G_WARN_OFF;
f86702cc 992
14dd3ad8
GS		 993#ifdef PERL_FLEXIBLE_EXCEPTIONS
994 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
995#else
996 JMPENV_PUSH(ret);
997#endif
6224f72b 998 switch (ret) {
312caa8e 999 case 0:
14dd3ad8
GS		 1000#ifndef PERL_FLEXIBLE_EXCEPTIONS
1001 parse_body(env,xsinit);
1002#endif
7d30b5c4
GS		 1003 if (PL_checkav)
1004 call_list(oldscope, PL_checkav);
14dd3ad8
GS		 1005 ret = 0;
1006 break;
6224f72b
GS		 1007 case 1:
1008 STATUS_ALL_FAILURE;
1009 /* FALL THROUGH */
1010 case 2:
1011 /* my_exit() was called */
3280af22 1012 while (PL_scopestack_ix > oldscope)
6224f72b
GS		 1013 LEAVE;
1014 FREETMPS;
3280af22 1015 PL_curstash = PL_defstash;
7d30b5c4
GS		 1016 if (PL_checkav)
1017 call_list(oldscope, PL_checkav);
14dd3ad8
GS		 1018 ret = STATUS_NATIVE_EXPORT;
1019 break;
6224f72b 1020 case 3:
bf49b057 1021 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS		 1022 ret = 1;
1023 break;
6224f72b 1024 }
14dd3ad8
GS		 1025 JMPENV_POP;
1026 return ret;
1027}
1028
1029#ifdef PERL_FLEXIBLE_EXCEPTIONS
1030STATIC void *
1031S_vparse_body(pTHX_ va_list args)
1032{
1033 char **env = va_arg(args, char**);
1034 XSINIT_t xsinit = va_arg(args, XSINIT_t);
1035
1036 return parse_body(env, xsinit);
312caa8e 1037}
14dd3ad8 1038#endif
312caa8e
CS		 1039
1040STATIC void *
14dd3ad8 1041S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1042{
312caa8e
CS		 1043 int argc = PL_origargc;
1044 char **argv = PL_origargv;
312caa8e
CS		 1045 char *scriptname = NULL;
1046 int fdscript = -1;
1047 VOL bool dosearch = FALSE;
1048 char *validarg = "";
1049 AV* comppadlist;
1050 register SV *sv;
1051 register char *s;
cf756827 1052 char *cddir = Nullch;
312caa8e 1053
3280af22 1054 sv_setpvn(PL_linestr,"",0);
79cb57f6 1055 sv = newSVpvn("",0); /* first used for -I flags */
6224f72b
GS		 1056 SAVEFREESV(sv);
1057 init_main_stash();
54310121 1058
6224f72b
GS		 1059 for (argc--,argv++; argc > 0; argc--,argv++) {
1060 if (argv[0][0] != '-' || !argv[0][1])
1061 break;
1062#ifdef DOSUID
1063 if (*validarg)
1064 validarg = " PHOOEY ";
1065 else
1066 validarg = argv[0];
13281fa4 1067#endif
6224f72b
GS		 1068 s = argv[0]+1;
1069 reswitch:
1070 switch (*s) {
729a02f2
GS		 1071 case 'C':
1072#ifdef WIN32
c0932edc 1073 win32_argv2utf8(argc-1, argv+1);
729a02f2
GS		 1074 /* FALL THROUGH */
1075#endif
1d5472a9
GS		 1076#ifndef PERL_STRICT_CR
1077 case '\r':
1078#endif
6224f72b
GS		 1079 case ' ':
1080 case '0':
1081 case 'F':
1082 case 'a':
1083 case 'c':
1084 case 'd':
1085 case 'D':
1086 case 'h':
1087 case 'i':
1088 case 'l':
1089 case 'M':
1090 case 'm':
1091 case 'n':
1092 case 'p':
1093 case 's':
1094 case 'u':
1095 case 'U':
1096 case 'v':
599cee73
PM		 1097 case 'W':
1098 case 'X':
6224f72b 1099 case 'w':
155aba94 1100 if ((s = moreswitches(s)))
6224f72b
GS		 1101 goto reswitch;
1102 break;
33b78306 1103
1dbad523 1104 case 't':
317ea90d
MS		 1105 if( !PL_tainting ) {
1106 PL_taint_warn = TRUE;
1107 PL_tainting = TRUE;
1108 }
1109 s++;
1110 goto reswitch;
6224f72b 1111 case 'T':
3280af22 1112 PL_tainting = TRUE;
317ea90d 1113 PL_taint_warn = FALSE;
6224f72b
GS		 1114 s++;
1115 goto reswitch;
f86702cc 1116
6224f72b 1117 case 'e':
bf4acbe4
GS		 1118#ifdef MACOS_TRADITIONAL
1119 /* ignore -e for Dev:Pseudo argument */
1120 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
ac27b0f5 1121 break;
bf4acbe4 1122#endif
3280af22 1123 if (PL_euid != PL_uid || PL_egid != PL_gid)
cea2e8a9 1124 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
3280af22 1125 if (!PL_e_script) {
79cb57f6 1126 PL_e_script = newSVpvn("",0);
0cb96387 1127 filter_add(read_e_script, NULL);
6224f72b
GS		 1128 }
1129 if (*++s)
3280af22 1130 sv_catpv(PL_e_script, s);
6224f72b 1131 else if (argv[1]) {
3280af22 1132 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS		 1133 argc--,argv++;
1134 }
1135 else
cea2e8a9 1136 Perl_croak(aTHX_ "No code specified for -e");
3280af22 1137 sv_catpv(PL_e_script, "\n");
6224f72b 1138 break;
afe37c7d 1139
6224f72b
GS		 1140 case 'I': /* -I handled both here and in moreswitches() */
1141 forbid_setid("-I");
1142 if (!*++s && (s=argv[1]) != Nullch) {
1143 argc--,argv++;
1144 }
6224f72b 1145 if (s && *s) {
0df16ed7
GS		 1146 char *p;
1147 STRLEN len = strlen(s);
1148 p = savepvn(s, len);
9c8a64f0 1149 incpush(p, TRUE, TRUE);
0df16ed7
GS		 1150 sv_catpvn(sv, "-I", 2);
1151 sv_catpvn(sv, p, len);
1152 sv_catpvn(sv, " ", 1);
6224f72b 1153 Safefree(p);
0df16ed7
GS		 1154 }
1155 else
a67e862a 1156 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b
GS		 1157 break;
1158 case 'P':
1159 forbid_setid("-P");
3280af22 1160 PL_preprocess = TRUE;
6224f72b
GS		 1161 s++;
1162 goto reswitch;
1163 case 'S':
1164 forbid_setid("-S");
1165 dosearch = TRUE;
1166 s++;
1167 goto reswitch;
1168 case 'V':
3280af22
NIS		 1169 if (!PL_preambleav)
1170 PL_preambleav = newAV();
1171 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
6224f72b 1172 if (*++s != ':') {
3280af22 1173 PL_Sv = newSVpv("print myconfig();",0);
6224f72b 1174#ifdef VMS
6b88bc9c 1175 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
6224f72b 1176#else
3280af22 1177 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
6224f72b 1178#endif
3280af22 1179 sv_catpv(PL_Sv,"\" Compile-time options:");
6224f72b 1180# ifdef DEBUGGING
3280af22 1181 sv_catpv(PL_Sv," DEBUGGING");
6224f72b 1182# endif
6224f72b 1183# ifdef MULTIPLICITY
8f872242 1184 sv_catpv(PL_Sv," MULTIPLICITY");
6224f72b 1185# endif
4d1ff10f
AB		 1186# ifdef USE_5005THREADS
1187 sv_catpv(PL_Sv," USE_5005THREADS");
b363f7ed 1188# endif
ac5e8965
JH		 1189# ifdef USE_ITHREADS
1190 sv_catpv(PL_Sv," USE_ITHREADS");
1191# endif
10cc9d2a
JH		 1192# ifdef USE_64_BIT_INT
1193 sv_catpv(PL_Sv," USE_64_BIT_INT");
1194# endif
1195# ifdef USE_64_BIT_ALL
1196 sv_catpv(PL_Sv," USE_64_BIT_ALL");
ac5e8965
JH		 1197# endif
1198# ifdef USE_LONG_DOUBLE
1199 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1200# endif
53430762
JH		 1201# ifdef USE_LARGE_FILES
1202 sv_catpv(PL_Sv," USE_LARGE_FILES");
1203# endif
ac5e8965
JH		 1204# ifdef USE_SOCKS
1205 sv_catpv(PL_Sv," USE_SOCKS");
1206# endif
b363f7ed
GS		 1207# ifdef PERL_IMPLICIT_CONTEXT
1208 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1209# endif
1210# ifdef PERL_IMPLICIT_SYS
1211 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1212# endif
3280af22 1213 sv_catpv(PL_Sv,"\\n\",");
b363f7ed 1214
6224f72b
GS		 1215#if defined(LOCAL_PATCH_COUNT)
1216 if (LOCAL_PATCH_COUNT > 0) {
1217 int i;
3280af22 1218 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
6224f72b 1219 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
3280af22 1220 if (PL_localpatches[i])
cea2e8a9 1221 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
6224f72b
GS		 1222 }
1223 }
1224#endif
cea2e8a9 1225 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
6224f72b
GS		 1226#ifdef __DATE__
1227# ifdef __TIME__
cea2e8a9 1228 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
6224f72b 1229# else
cea2e8a9 1230 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
6224f72b
GS		 1231# endif
1232#endif
3280af22 1233 sv_catpv(PL_Sv, "; \
6224f72b 1234$\"=\"\\n \"; \
69fcd688
JH		 1235@env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; ");
1236#ifdef __CYGWIN__
1237 sv_catpv(PL_Sv,"\
1238push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
1239#endif
1240 sv_catpv(PL_Sv, "\
6224f72b
GS		 1241print \" \\%ENV:\\n @env\\n\" if @env; \
1242print \" \\@INC:\\n @INC\\n\";");
1243 }
1244 else {
3280af22
NIS		 1245 PL_Sv = newSVpv("config_vars(qw(",0);
1246 sv_catpv(PL_Sv, ++s);
1247 sv_catpv(PL_Sv, "))");
6224f72b
GS		 1248 s += strlen(s);
1249 }
3280af22 1250 av_push(PL_preambleav, PL_Sv);
6224f72b
GS		 1251 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1252 goto reswitch;
1253 case 'x':
3280af22 1254 PL_doextract = TRUE;
6224f72b
GS		 1255 s++;
1256 if (*s)
f4c556ac 1257 cddir = s;
6224f72b
GS		 1258 break;
1259 case 0:
1260 break;
1261 case '-':
1262 if (!*++s || isSPACE(*s)) {
1263 argc--,argv++;
1264 goto switch_end;
1265 }
1266 /* catch use of gnu style long options */
1267 if (strEQ(s, "version")) {
1268 s = "v";
1269 goto reswitch;
1270 }
1271 if (strEQ(s, "help")) {
1272 s = "h";
1273 goto reswitch;
1274 }
1275 s--;
1276 /* FALL THROUGH */
1277 default:
cea2e8a9 1278 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW		 1279 }
1280 }
6224f72b 1281 switch_end:
54310121 1282
f675dbe5
CB		 1283 if (
1284#ifndef SECURE_INTERNAL_GETENV
1285 !PL_tainting &&
1286#endif
cf756827 1287 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1288 {
cf756827 1289 char *popt = s;
74288ac8
GS		 1290 while (isSPACE(*s))
1291 s++;
317ea90d 1292 if (*s == '-' && *(s+1) == 'T') {
74288ac8 1293 PL_tainting = TRUE;
317ea90d
MS		 1294 PL_taint_warn = FALSE;
1295 }
74288ac8 1296 else {
cf756827 1297 char *popt_copy = Nullch;
74288ac8 1298 while (s && *s) {
4ea8f8fb 1299 char *d;
74288ac8
GS		 1300 while (isSPACE(*s))
1301 s++;
1302 if (*s == '-') {
1303 s++;
1304 if (isSPACE(*s))
1305 continue;
1306 }
4ea8f8fb 1307 d = s;
74288ac8
GS		 1308 if (!*s)
1309 break;
1c4db469 1310 if (!strchr("DIMUdmtw", *s))
cea2e8a9 1311 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS		 1312 while (++s && *s) {
1313 if (isSPACE(*s)) {
cf756827
GS		 1314 if (!popt_copy) {
1315 popt_copy = SvPVX(sv_2mortal(newSVpv(popt,0)));
1316 s = popt_copy + (s - popt);
1317 d = popt_copy + (d - popt);
1318 }
4ea8f8fb
MS		 1319 *s++ = '\0';
1320 break;
1321 }
1322 }
1c4db469 1323 if (*d == 't') {
317ea90d
MS		 1324 if( !PL_tainting ) {
1325 PL_taint_warn = TRUE;
1326 PL_tainting = TRUE;
1327 }
1c4db469
RGS		 1328 } else {
1329 moreswitches(d);
1330 }
6224f72b 1331 }
6224f72b
GS		 1332 }
1333 }
a0d0e21e 1334
317ea90d
MS		 1335 if (PL_taint_warn && PL_dowarn != G_WARN_ALL_OFF) {
1336 PL_compiling.cop_warnings = newSVpvn(WARN_TAINTstring, WARNsize);
1337 }
1338
6224f72b
GS		 1339 if (!scriptname)
1340 scriptname = argv[0];
3280af22 1341 if (PL_e_script) {
6224f72b
GS		 1342 argc++,argv--;
1343 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1344 }
1345 else if (scriptname == Nullch) {
1346#ifdef MSDOS
1347 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1348 moreswitches("h");
1349#endif
1350 scriptname = "-";
1351 }
1352
1353 init_perllib();
1354
1355 open_script(scriptname,dosearch,sv,&fdscript);
1356
1357 validate_suid(validarg, scriptname,fdscript);
1358
64ca3a65 1359#ifndef PERL_MICRO
0b5b802d
GS		 1360#if defined(SIGCHLD) || defined(SIGCLD)
1361 {
1362#ifndef SIGCHLD
1363# define SIGCHLD SIGCLD
1364#endif
1365 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1366 if (sigstate == SIG_IGN) {
1367 if (ckWARN(WARN_SIGNAL))
1368 Perl_warner(aTHX_ WARN_SIGNAL,
1369 "Can't ignore signal CHLD, forcing to default");
1370 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1371 }
1372 }
1373#endif
64ca3a65 1374#endif
0b5b802d 1375
bf4acbe4
GS		 1376#ifdef MACOS_TRADITIONAL
1377 if (PL_doextract || gMacPerl_AlwaysExtract) {
1378#else
f4c556ac 1379 if (PL_doextract) {
bf4acbe4 1380#endif
6224f72b 1381 find_beginning();
f4c556ac
GS		 1382 if (cddir && PerlDir_chdir(cddir) < 0)
1383 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1384
1385 }
6224f72b 1386
3280af22
NIS		 1387 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1388 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1389 CvUNIQUE_on(PL_compcv);
1390
1391 PL_comppad = newAV();
1392 av_push(PL_comppad, Nullsv);
1393 PL_curpad = AvARRAY(PL_comppad);
1394 PL_comppad_name = newAV();
1395 PL_comppad_name_fill = 0;
1396 PL_min_intro_pending = 0;
1397 PL_padix = 0;
4d1ff10f 1398#ifdef USE_5005THREADS
79cb57f6 1399 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
533c011a
NIS		 1400 PL_curpad[0] = (SV*)newAV();
1401 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1402 CvOWNER(PL_compcv) = 0;
1403 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1404 MUTEX_INIT(CvMUTEXP(PL_compcv));
4d1ff10f 1405#endif /* USE_5005THREADS */
6224f72b
GS		 1406
1407 comppadlist = newAV();
1408 AvREAL_off(comppadlist);
3280af22
NIS		 1409 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1410 av_store(comppadlist, 1, (SV*)PL_comppad);
1411 CvPADLIST(PL_compcv) = comppadlist;
6224f72b 1412
0c4f7ff0 1413 boot_core_PerlIO();
6224f72b 1414 boot_core_UNIVERSAL();
9a34ef1d 1415#ifndef PERL_MICRO
09bef843 1416 boot_core_xsutils();
9a34ef1d 1417#endif
6224f72b
GS		 1418
1419 if (xsinit)
acfe0abc 1420 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 1421#ifndef PERL_MICRO
ed79a026 1422#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
c5be433b 1423 init_os_extras();
6224f72b 1424#endif
64ca3a65 1425#endif
6224f72b 1426
29209bc5 1427#ifdef USE_SOCKS
1b9c9cf5
DH		 1428# ifdef HAS_SOCKS5_INIT
1429 socks5_init(argv[0]);
1430# else
29209bc5 1431 SOCKSinit(argv[0]);
1b9c9cf5 1432# endif
ac27b0f5 1433#endif
29209bc5 1434
6224f72b
GS		 1435 init_predump_symbols();
1436 /* init_postdump_symbols not currently designed to be called */
1437 /* more than once (ENV isn't cleared first, for example) */
1438 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 1439 if (!PL_do_undump)
6224f72b
GS		 1440 init_postdump_symbols(argc,argv,env);
1441
1442 init_lexer();
1443
1444 /* now parse the script */
1445
91487cfc 1446 SETERRNO(0,SS$_NORMAL);
3280af22 1447 PL_error_count = 0;
bf4acbe4
GS		 1448#ifdef MACOS_TRADITIONAL
1449 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1450 if (PL_minus_c)
1451 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1452 else {
1453 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1454 MacPerl_MPWFileName(PL_origfilename));
1455 }
1456 }
1457#else
3280af22
NIS		 1458 if (yyparse() || PL_error_count) {
1459 if (PL_minus_c)
cea2e8a9 1460 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 1461 else {
cea2e8a9 1462 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 1463 PL_origfilename);
6224f72b
GS		 1464 }
1465 }
bf4acbe4 1466#endif
57843af0 1467 CopLINE_set(PL_curcop, 0);
3280af22
NIS		 1468 PL_curstash = PL_defstash;
1469 PL_preprocess = FALSE;
1470 if (PL_e_script) {
1471 SvREFCNT_dec(PL_e_script);
1472 PL_e_script = Nullsv;
6224f72b
GS		 1473 }
1474
8bfdd7d9
HS		 1475/*
1476 Not sure that this is still the right place to do this now that we
1477 no longer use PL_nrs. HVDS 2001/09/09
1478*/
864dbfa3 1479 sv_setsv(get_sv("/", TRUE), PL_rs);
8bfdd7d9 1480
3280af22 1481 if (PL_do_undump)
6224f72b
GS		 1482 my_unexec();
1483
57843af0
GS		 1484 if (isWARN_ONCE) {
1485 SAVECOPFILE(PL_curcop);
1486 SAVECOPLINE(PL_curcop);
3280af22 1487 gv_check(PL_defstash);
57843af0 1488 }
6224f72b
GS		 1489
1490 LEAVE;
1491 FREETMPS;
1492
1493#ifdef MYMALLOC
1494 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1495 dump_mstats("after compilation:");
1496#endif
1497
1498 ENTER;
3280af22 1499 PL_restartop = 0;
312caa8e 1500 return NULL;
6224f72b
GS		 1501}
1502
954c1994
GS		 1503/*
1504=for apidoc perl_run
1505
1506Tells a Perl interpreter to run. See L<perlembed>.
1507
1508=cut
1509*/
1510
6224f72b 1511int
0cb96387 1512perl_run(pTHXx)
6224f72b 1513{
6224f72b 1514 I32 oldscope;
14dd3ad8 1515 int ret = 0;
db36c5a1 1516 dJMPENV;
4d1ff10f 1517#ifdef USE_5005THREADS
cea2e8a9
GS		 1518 dTHX;
1519#endif
6224f72b 1520
3280af22 1521 oldscope = PL_scopestack_ix;
96e176bf
CL		 1522#ifdef VMS
1523 VMSISH_HUSHED = 0;
1524#endif
6224f72b 1525
14dd3ad8 1526#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1527 redo_body:
14dd3ad8
GS		 1528 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1529#else
1530 JMPENV_PUSH(ret);
1531#endif
6224f72b
GS		 1532 switch (ret) {
1533 case 1:
1534 cxstack_ix = -1; /* start context stack again */
312caa8e 1535 goto redo_body;
14dd3ad8
GS		 1536 case 0: /* normal completion */
1537#ifndef PERL_FLEXIBLE_EXCEPTIONS
1538 redo_body:
1539 run_body(oldscope);
1540#endif
1541 /* FALL THROUGH */
1542 case 2: /* my_exit() */
3280af22 1543 while (PL_scopestack_ix > oldscope)
6224f72b
GS		 1544 LEAVE;
1545 FREETMPS;
3280af22 1546 PL_curstash = PL_defstash;
3a1ee7e8 1547 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
31d77e54
AB		 1548 PL_endav && !PL_minus_c)
1549 call_list(oldscope, PL_endav);
6224f72b
GS		 1550#ifdef MYMALLOC
1551 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1552 dump_mstats("after execution: ");
1553#endif
14dd3ad8
GS		 1554 ret = STATUS_NATIVE_EXPORT;
1555 break;
6224f72b 1556 case 3:
312caa8e
CS		 1557 if (PL_restartop) {
1558 POPSTACK_TO(PL_mainstack);
1559 goto redo_body;
6224f72b 1560 }
bf49b057 1561 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 1562 FREETMPS;
14dd3ad8
GS		 1563 ret = 1;
1564 break;
6224f72b
GS		 1565 }
1566
14dd3ad8
GS		 1567 JMPENV_POP;
1568 return ret;
312caa8e
CS		 1569}
1570
14dd3ad8 1571#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1572STATIC void *
14dd3ad8 1573S_vrun_body(pTHX_ va_list args)
312caa8e 1574{
312caa8e
CS		 1575 I32 oldscope = va_arg(args, I32);
1576
14dd3ad8
GS		 1577 return run_body(oldscope);
1578}
1579#endif
1580
1581
1582STATIC void *
1583S_run_body(pTHX_ I32 oldscope)
1584{
6224f72b 1585 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 1586 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 1587
3280af22 1588 if (!PL_restartop) {
6224f72b
GS		 1589 DEBUG_x(dump_all());
1590 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
b900a521
JH		 1591 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1592 PTR2UV(thr)));
6224f72b 1593
3280af22 1594 if (PL_minus_c) {
bf4acbe4 1595#ifdef MACOS_TRADITIONAL
be708cc0 1596 PerlIO_printf(Perl_error_log, "# %s syntax OK\n", MacPerl_MPWFileName(PL_origfilename));
bf4acbe4 1597#else
bf49b057 1598 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
bf4acbe4 1599#endif
6224f72b
GS		 1600 my_exit(0);
1601 }
3280af22 1602 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 1603 sv_setiv(PL_DBsingle, 1);
3280af22
NIS		 1604 if (PL_initav)
1605 call_list(oldscope, PL_initav);
6224f72b
GS		 1606 }
1607
1608 /* do it */
1609
3280af22 1610 if (PL_restartop) {
533c011a 1611 PL_op = PL_restartop;
3280af22 1612 PL_restartop = 0;
cea2e8a9 1613 CALLRUNOPS(aTHX);
6224f72b 1614 }
3280af22
NIS		 1615 else if (PL_main_start) {
1616 CvDEPTH(PL_main_cv) = 1;
533c011a 1617 PL_op = PL_main_start;
cea2e8a9 1618 CALLRUNOPS(aTHX);
6224f72b
GS		 1619 }
1620
f6b3007c
JH		 1621 my_exit(0);
1622 /* NOTREACHED */
312caa8e 1623 return NULL;
6224f72b
GS		 1624}
1625
954c1994 1626/*
ccfc67b7
JH		 1627=head1 SV Manipulation Functions
1628
954c1994
GS		 1629=for apidoc p||get_sv
1630
1631Returns the SV of the specified Perl scalar. If C<create> is set and the
1632Perl variable does not exist then it will be created. If C<create> is not
1633set and the variable does not exist then NULL is returned.
1634
1635=cut
1636*/
1637
6224f72b 1638SV*
864dbfa3 1639Perl_get_sv(pTHX_ const char *name, I32 create)
6224f72b
GS		 1640{
1641 GV *gv;
4d1ff10f 1642#ifdef USE_5005THREADS
6224f72b
GS		 1643 if (name[1] == '\0' && !isALPHA(name[0])) {
1644 PADOFFSET tmp = find_threadsv(name);
411caa50 1645 if (tmp != NOT_IN_PAD)
6224f72b 1646 return THREADSV(tmp);
6224f72b 1647 }
4d1ff10f 1648#endif /* USE_5005THREADS */
6224f72b
GS		 1649 gv = gv_fetchpv(name, create, SVt_PV);
1650 if (gv)
1651 return GvSV(gv);
1652 return Nullsv;
1653}
1654
954c1994 1655/*
ccfc67b7
JH		 1656=head1 Array Manipulation Functions
1657
954c1994
GS		 1658=for apidoc p||get_av
1659
1660Returns the AV of the specified Perl array. If C<create> is set and the
1661Perl variable does not exist then it will be created. If C<create> is not
1662set and the variable does not exist then NULL is returned.
1663
1664=cut
1665*/
1666
6224f72b 1667AV*
864dbfa3 1668Perl_get_av(pTHX_ const char *name, I32 create)
6224f72b
GS		 1669{
1670 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1671 if (create)
1672 return GvAVn(gv);
1673 if (gv)
1674 return GvAV(gv);
1675 return Nullav;
1676}
1677
954c1994 1678/*
ccfc67b7
JH		 1679=head1 Hash Manipulation Functions
1680
954c1994
GS		 1681=for apidoc p||get_hv
1682
1683Returns the HV of the specified Perl hash. If C<create> is set and the
1684Perl variable does not exist then it will be created. If C<create> is not
1685set and the variable does not exist then NULL is returned.
1686
1687=cut
1688*/
1689
6224f72b 1690HV*
864dbfa3 1691Perl_get_hv(pTHX_ const char *name, I32 create)
6224f72b 1692{
a0d0e21e
LW		 1693 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1694 if (create)
1695 return GvHVn(gv);
1696 if (gv)
1697 return GvHV(gv);
1698 return Nullhv;
1699}
1700
954c1994 1701/*
ccfc67b7
JH		 1702=head1 CV Manipulation Functions
1703
954c1994
GS		 1704=for apidoc p||get_cv
1705
1706Returns the CV of the specified Perl subroutine. If C<create> is set and
1707the Perl subroutine does not exist then it will be declared (which has the
1708same effect as saying C<sub name;>). If C<create> is not set and the
1709subroutine does not exist then NULL is returned.
1710
1711=cut
1712*/
1713
a0d0e21e 1714CV*
864dbfa3 1715Perl_get_cv(pTHX_ const char *name, I32 create)
a0d0e21e
LW		 1716{
1717 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
b099ddc0 1718 /* XXX unsafe for threads if eval_owner isn't held */
f6ec51f7
GS		 1719 /* XXX this is probably not what they think they're getting.
1720 * It has the same effect as "sub name;", i.e. just a forward
1721 * declaration! */
8ebc5c01 1722 if (create && !GvCVu(gv))
774d564b 1723 return newSUB(start_subparse(FALSE, 0),
a0d0e21e 1724 newSVOP(OP_CONST, 0, newSVpv(name,0)),
4633a7c4 1725 Nullop,
a0d0e21e
LW		 1726 Nullop);
1727 if (gv)
8ebc5c01 1728 return GvCVu(gv);
a0d0e21e
LW		 1729 return Nullcv;
1730}
1731
79072805
LW		 1732/* Be sure to refetch the stack pointer after calling these routines. */
1733
954c1994 1734/*
ccfc67b7
JH		 1735
1736=head1 Callback Functions
1737
954c1994
GS		 1738=for apidoc p||call_argv
1739
1740Performs a callback to the specified Perl sub. See L<perlcall>.
1741
1742=cut
1743*/
1744
a0d0e21e 1745I32
864dbfa3 1746Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 1747
8ac85365
NIS		 1748 /* See G_* flags in cop.h */
1749 /* null terminated arg list */
8990e307 1750{
a0d0e21e 1751 dSP;
8990e307 1752
924508f0 1753 PUSHMARK(SP);
a0d0e21e 1754 if (argv) {
8990e307 1755 while (*argv) {
a0d0e21e 1756 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
8990e307
LW		 1757 argv++;
1758 }
a0d0e21e 1759 PUTBACK;
8990e307 1760 }
864dbfa3 1761 return call_pv(sub_name, flags);
8990e307
LW		 1762}
1763
954c1994
GS		 1764/*
1765=for apidoc p||call_pv
1766
1767Performs a callback to the specified Perl sub. See L<perlcall>.
1768
1769=cut
1770*/
1771
a0d0e21e 1772I32
864dbfa3 1773Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS		 1774 /* name of the subroutine */
1775 /* See G_* flags in cop.h */
a0d0e21e 1776{
864dbfa3 1777 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
a0d0e21e
LW		 1778}
1779
954c1994
GS		 1780/*
1781=for apidoc p||call_method
1782
1783Performs a callback to the specified Perl method. The blessed object must
1784be on the stack. See L<perlcall>.
1785
1786=cut
1787*/
1788
a0d0e21e 1789I32
864dbfa3 1790Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS		 1791 /* name of the subroutine */
1792 /* See G_* flags in cop.h */
a0d0e21e 1793{
968b3946 1794 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
a0d0e21e
LW		 1795}
1796
1797/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS		 1798/*
1799=for apidoc p||call_sv
1800
1801Performs a callback to the Perl sub whose name is in the SV. See
1802L<perlcall>.
1803
1804=cut
1805*/
1806
a0d0e21e 1807I32
864dbfa3 1808Perl_call_sv(pTHX_ SV *sv, I32 flags)
8ac85365 1809 /* See G_* flags in cop.h */
a0d0e21e 1810{
924508f0 1811 dSP;
a0d0e21e 1812 LOGOP myop; /* fake syntax tree node */
968b3946 1813 UNOP method_op;
aa689395 1814 I32 oldmark;
13689cfe 1815 volatile I32 retval = 0;
a0d0e21e 1816 I32 oldscope;
54310121 1817 bool oldcatch = CATCH_GET;
6224f72b 1818 int ret;
533c011a 1819 OP* oldop = PL_op;
db36c5a1 1820 dJMPENV;
1e422769 1821
a0d0e21e
LW		 1822 if (flags & G_DISCARD) {
1823 ENTER;
1824 SAVETMPS;
1825 }
1826
aa689395 1827 Zero(&myop, 1, LOGOP);
54310121 1828 myop.op_next = Nullop;
f51d4af5 1829 if (!(flags & G_NOARGS))
aa689395 1830 myop.op_flags |= OPf_STACKED;
54310121 1831 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1832 (flags & G_ARRAY) ? OPf_WANT_LIST :
1833 OPf_WANT_SCALAR);
462e5cf6 1834 SAVEOP();
533c011a 1835 PL_op = (OP*)&myop;
aa689395 1836
3280af22
NIS		 1837 EXTEND(PL_stack_sp, 1);
1838 *++PL_stack_sp = sv;
aa689395 1839 oldmark = TOPMARK;
3280af22 1840 oldscope = PL_scopestack_ix;
a0d0e21e 1841
3280af22 1842 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 1843 /* Handle first BEGIN of -d. */
3280af22 1844 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24 1845 /* Try harder, since this may have been a sighandler, thus
1846 * curstash may be meaningless. */
3280af22 1847 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
491527d0 1848 && !(flags & G_NODEBUG))
533c011a 1849 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 1850
968b3946
GS		 1851 if (flags & G_METHOD) {
1852 Zero(&method_op, 1, UNOP);
1853 method_op.op_next = PL_op;
1854 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1855 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
f39d0b86 1856 PL_op = (OP*)&method_op;
968b3946
GS		 1857 }
1858
312caa8e 1859 if (!(flags & G_EVAL)) {
0cdb2077 1860 CATCH_SET(TRUE);
14dd3ad8 1861 call_body((OP*)&myop, FALSE);
312caa8e 1862 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 1863 CATCH_SET(oldcatch);
312caa8e
CS		 1864 }
1865 else {
d78bda3d 1866 myop.op_other = (OP*)&myop;
3280af22 1867 PL_markstack_ptr--;
4633a7c4
LW		 1868 /* we're trying to emulate pp_entertry() here */
1869 {
c09156bb 1870 register PERL_CONTEXT *cx;
54310121 1871 I32 gimme = GIMME_V;
ac27b0f5 1872
4633a7c4
LW		 1873 ENTER;
1874 SAVETMPS;
ac27b0f5 1875
968b3946 1876 push_return(Nullop);
1d76a5c3 1877 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
4633a7c4 1878 PUSHEVAL(cx, 0, 0);
533c011a 1879 PL_eval_root = PL_op; /* Only needed so that goto works right. */
ac27b0f5 1880
faef0170 1881 PL_in_eval = EVAL_INEVAL;
4633a7c4 1882 if (flags & G_KEEPERR)
faef0170 1883 PL_in_eval |= EVAL_KEEPERR;
4633a7c4 1884 else
38a03e6e 1885 sv_setpv(ERRSV,"");
4633a7c4 1886 }
3280af22 1887 PL_markstack_ptr++;
a0d0e21e 1888
14dd3ad8
GS		 1889#ifdef PERL_FLEXIBLE_EXCEPTIONS
1890 redo_body:
1891 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
db36c5a1 1892 (OP*)&myop, FALSE);
14dd3ad8
GS		 1893#else
1894 JMPENV_PUSH(ret);
1895#endif
6224f72b
GS		 1896 switch (ret) {
1897 case 0:
14dd3ad8
GS		 1898#ifndef PERL_FLEXIBLE_EXCEPTIONS
1899 redo_body:
1900 call_body((OP*)&myop, FALSE);
1901#endif
312caa8e
CS		 1902 retval = PL_stack_sp - (PL_stack_base + oldmark);
1903 if (!(flags & G_KEEPERR))
1904 sv_setpv(ERRSV,"");
a0d0e21e 1905 break;
6224f72b 1906 case 1:
f86702cc 1907 STATUS_ALL_FAILURE;
a0d0e21e 1908 /* FALL THROUGH */
6224f72b 1909 case 2:
a0d0e21e 1910 /* my_exit() was called */
3280af22 1911 PL_curstash = PL_defstash;
a0d0e21e 1912 FREETMPS;
14dd3ad8 1913 JMPENV_POP;
cc3604b1 1914 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 1915 Perl_croak(aTHX_ "Callback called exit");
f86702cc 1916 my_exit_jump();
a0d0e21e 1917 /* NOTREACHED */
6224f72b 1918 case 3:
3280af22 1919 if (PL_restartop) {
533c011a 1920 PL_op = PL_restartop;
3280af22 1921 PL_restartop = 0;
312caa8e 1922 goto redo_body;
a0d0e21e 1923 }
3280af22 1924 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW		 1925 if (flags & G_ARRAY)
1926 retval = 0;
1927 else {
1928 retval = 1;
3280af22 1929 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 1930 }
312caa8e 1931 break;
a0d0e21e 1932 }
a0d0e21e 1933
3280af22 1934 if (PL_scopestack_ix > oldscope) {
a0a2876f
LW		 1935 SV **newsp;
1936 PMOP *newpm;
1937 I32 gimme;
c09156bb 1938 register PERL_CONTEXT *cx;
a0a2876f
LW		 1939 I32 optype;
1940
1941 POPBLOCK(cx,newpm);
1942 POPEVAL(cx);
1943 pop_return();
3280af22 1944 PL_curpm = newpm;
a0a2876f 1945 LEAVE;
a0d0e21e 1946 }
14dd3ad8 1947 JMPENV_POP;
a0d0e21e 1948 }
1e422769 1949
a0d0e21e 1950 if (flags & G_DISCARD) {
3280af22 1951 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW		 1952 retval = 0;
1953 FREETMPS;
1954 LEAVE;
1955 }
533c011a 1956 PL_op = oldop;
a0d0e21e
LW		 1957 return retval;
1958}
1959
14dd3ad8 1960#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1961STATIC void *
14dd3ad8 1962S_vcall_body(pTHX_ va_list args)
312caa8e
CS		 1963{
1964 OP *myop = va_arg(args, OP*);
1965 int is_eval = va_arg(args, int);
1966
14dd3ad8 1967 call_body(myop, is_eval);
312caa8e
CS		 1968 return NULL;
1969}
14dd3ad8 1970#endif
312caa8e
CS		 1971
1972STATIC void
14dd3ad8 1973S_call_body(pTHX_ OP *myop, int is_eval)
312caa8e 1974{
312caa8e
CS		 1975 if (PL_op == myop) {
1976 if (is_eval)
f807eda9 1977 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
312caa8e 1978 else
f807eda9 1979 PL_op = Perl_pp_entersub(aTHX); /* this does */
312caa8e
CS		 1980 }
1981 if (PL_op)
cea2e8a9 1982 CALLRUNOPS(aTHX);
312caa8e
CS		 1983}
1984
6e72f9df 1985/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 1986
954c1994
GS		 1987/*
1988=for apidoc p||eval_sv
1989
1990Tells Perl to C<eval> the string in the SV.
1991
1992=cut
1993*/
1994
a0d0e21e 1995I32
864dbfa3 1996Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 1997
8ac85365 1998 /* See G_* flags in cop.h */
a0d0e21e 1999{
924508f0 2000 dSP;
a0d0e21e 2001 UNOP myop; /* fake syntax tree node */
8fa7f367 2002 volatile I32 oldmark = SP - PL_stack_base;
13689cfe 2003 volatile I32 retval = 0;
4633a7c4 2004 I32 oldscope;
6224f72b 2005 int ret;
533c011a 2006 OP* oldop = PL_op;
db36c5a1 2007 dJMPENV;
84902520 2008
4633a7c4
LW		 2009 if (flags & G_DISCARD) {
2010 ENTER;
2011 SAVETMPS;
2012 }
2013
462e5cf6 2014 SAVEOP();
533c011a
NIS		 2015 PL_op = (OP*)&myop;
2016 Zero(PL_op, 1, UNOP);
3280af22
NIS		 2017 EXTEND(PL_stack_sp, 1);
2018 *++PL_stack_sp = sv;
2019 oldscope = PL_scopestack_ix;
79072805 2020
4633a7c4
LW		 2021 if (!(flags & G_NOARGS))
2022 myop.op_flags = OPf_STACKED;
79072805 2023 myop.op_next = Nullop;
6e72f9df 2024 myop.op_type = OP_ENTEREVAL;
54310121 2025 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
2026 (flags & G_ARRAY) ? OPf_WANT_LIST :
2027 OPf_WANT_SCALAR);
6e72f9df 2028 if (flags & G_KEEPERR)
2029 myop.op_flags |= OPf_SPECIAL;
4633a7c4 2030
14dd3ad8 2031#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 2032 redo_body:
14dd3ad8 2033 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
db36c5a1 2034 (OP*)&myop, TRUE);
14dd3ad8
GS		 2035#else
2036 JMPENV_PUSH(ret);
2037#endif
6224f72b
GS		 2038 switch (ret) {
2039 case 0:
14dd3ad8
GS		 2040#ifndef PERL_FLEXIBLE_EXCEPTIONS
2041 redo_body:
2042 call_body((OP*)&myop,TRUE);
2043#endif
312caa8e
CS		 2044 retval = PL_stack_sp - (PL_stack_base + oldmark);
2045 if (!(flags & G_KEEPERR))
2046 sv_setpv(ERRSV,"");
4633a7c4 2047 break;
6224f72b 2048 case 1:
f86702cc 2049 STATUS_ALL_FAILURE;
4633a7c4 2050 /* FALL THROUGH */
6224f72b 2051 case 2:
4633a7c4 2052 /* my_exit() was called */
3280af22 2053 PL_curstash = PL_defstash;
4633a7c4 2054 FREETMPS;
14dd3ad8 2055 JMPENV_POP;
cc3604b1 2056 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2057 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2058 my_exit_jump();
4633a7c4 2059 /* NOTREACHED */
6224f72b 2060 case 3:
3280af22 2061 if (PL_restartop) {
533c011a 2062 PL_op = PL_restartop;
3280af22 2063 PL_restartop = 0;
312caa8e 2064 goto redo_body;
4633a7c4 2065 }
3280af22 2066 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW		 2067 if (flags & G_ARRAY)
2068 retval = 0;
2069 else {
2070 retval = 1;
3280af22 2071 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2072 }
312caa8e 2073 break;
4633a7c4
LW		 2074 }
2075
14dd3ad8 2076 JMPENV_POP;
4633a7c4 2077 if (flags & G_DISCARD) {
3280af22 2078 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW		 2079 retval = 0;
2080 FREETMPS;
2081 LEAVE;
2082 }
533c011a 2083 PL_op = oldop;
4633a7c4
LW		 2084 return retval;
2085}
2086
954c1994
GS		 2087/*
2088=for apidoc p||eval_pv
2089
2090Tells Perl to C<eval> the given string and return an SV* result.
2091
2092=cut
2093*/
2094
137443ea 2095SV*
864dbfa3 2096Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2097{
2098 dSP;
2099 SV* sv = newSVpv(p, 0);
2100
864dbfa3 2101 eval_sv(sv, G_SCALAR);
137443ea 2102 SvREFCNT_dec(sv);
2103
2104 SPAGAIN;
2105 sv = POPs;
2106 PUTBACK;
2107
2d8e6c8d
GS		 2108 if (croak_on_error && SvTRUE(ERRSV)) {
2109 STRLEN n_a;
cea2e8a9 2110 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
2d8e6c8d 2111 }
137443ea 2112
2113 return sv;
2114}
2115
4633a7c4
LW		 2116/* Require a module. */
2117
954c1994 2118/*
ccfc67b7
JH		 2119=head1 Embedding Functions
2120
954c1994
GS		 2121=for apidoc p||require_pv
2122
7d3fb230
BS		 2123Tells Perl to C<require> the file named by the string argument. It is
2124analogous to the Perl code C<eval "require '$file'">. It's even
2125implemented that way; consider using Perl_load_module instead.
954c1994 2126
7d3fb230 2127=cut */
954c1994 2128
4633a7c4 2129void
864dbfa3 2130Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2131{
d3acc0f7
JP		 2132 SV* sv;
2133 dSP;
e788e7d3 2134 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7
JP		 2135 PUTBACK;
2136 sv = sv_newmortal();
4633a7c4
LW		 2137 sv_setpv(sv, "require '");
2138 sv_catpv(sv, pv);
2139 sv_catpv(sv, "'");
864dbfa3 2140 eval_sv(sv, G_DISCARD);
d3acc0f7
JP		 2141 SPAGAIN;
2142 POPSTACK;
79072805
LW		 2143}
2144
79072805 2145void
864dbfa3 2146Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
79072805
LW		 2147{
2148 register GV *gv;
2149
155aba94 2150 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
14befaf4 2151 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
79072805
LW		 2152}
2153
76e3520e 2154STATIC void
cea2e8a9 2155S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
4633a7c4 2156{
ab821d7f 2157 /* This message really ought to be max 23 lines.
75c72d73 2158 * Removed -h because the user already knows that option. Others? */
fb73857a 2159
76e3520e 2160 static char *usage_msg[] = {
fb73857a 2161"-0[octal] specify record separator (\\0, if no argument)",
2162"-a autosplit mode with -n or -p (splits $_ into @F)",
46487f74 2163"-C enable native wide character system interfaces",
1950ee41 2164"-c check syntax only (runs BEGIN and CHECK blocks)",
aac3bd0d
GS		 2165"-d[:debugger] run program under debugger",
2166"-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2167"-e 'command' one line of program (several -e's allowed, omit programfile)",
2168"-F/pattern/ split() pattern for -a switch (//'s are optional)",
2169"-i[extension] edit <> files in place (makes backup if extension supplied)",
2170"-Idirectory specify @INC/#include directory (several -I's allowed)",
fb73857a 2171"-l[octal] enable line ending processing, specifies line terminator",
aac3bd0d
GS		 2172"-[mM][-]module execute `use/no module...' before executing program",
2173"-n assume 'while (<>) { ... }' loop around program",
2174"-p assume loop like -n but print line also, like sed",
2175"-P run program through C preprocessor before compilation",
2176"-s enable rudimentary parsing for switches after programfile",
2177"-S look for programfile using PATH environment variable",
2178"-T enable tainting checks",
2179"-u dump core after parsing program",
fb73857a 2180"-U allow unsafe operations",
aac3bd0d
GS		 2181"-v print version, subversion (includes VERY IMPORTANT perl info)",
2182"-V[:variable] print configuration summary (or a single Config.pm variable)",
2183"-w enable many useful warnings (RECOMMENDED)",
3c0facb2
GS		 2184"-W enable all warnings",
2185"-X disable all warnings",
fb73857a 2186"-x[directory] strip off text before #!perl line and perhaps cd to directory",
2187"\n",
2188NULL
2189};
76e3520e 2190 char **p = usage_msg;
fb73857a 2191
b0e47665
GS		 2192 PerlIO_printf(PerlIO_stdout(),
2193 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2194 name);
fb73857a 2195 while (*p)
b0e47665 2196 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
4633a7c4
LW		 2197}
2198
79072805
LW		 2199/* This routine handles any switches that can be given during run */
2200
2201char *
864dbfa3 2202Perl_moreswitches(pTHX_ char *s)
79072805 2203{
ba210ebe 2204 STRLEN numlen;
c07a80fd 2205 U32 rschar;
79072805
LW		 2206
2207 switch (*s) {
2208 case '0':
a863c7d1 2209 {
53305cf1
NC		 2210 I32 flags = 0;
2211 numlen = 4;
2212 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
8bfdd7d9 2213 SvREFCNT_dec(PL_rs);
c07a80fd 2214 if (rschar & ~((U8)~0))
8bfdd7d9 2215 PL_rs = &PL_sv_undef;
c07a80fd 2216 else if (!rschar && numlen >= 2)
8bfdd7d9 2217 PL_rs = newSVpvn("", 0);
c07a80fd 2218 else {
2219 char ch = rschar;
8bfdd7d9 2220 PL_rs = newSVpvn(&ch, 1);
79072805
LW		 2221 }
2222 return s + numlen;
a863c7d1 2223 }
46487f74
GS		 2224 case 'C':
2225 PL_widesyscalls = TRUE;
2226 s++;
2227 return s;
2304df62 2228 case 'F':
3280af22 2229 PL_minus_F = TRUE;
ebce5377
RGS		 2230 PL_splitstr = ++s;
2231 while (*s && !isSPACE(*s)) ++s;
2232 *s = '\0';
2233 PL_splitstr = savepv(PL_splitstr);
2304df62 2234 return s;
79072805 2235 case 'a':
3280af22 2236 PL_minus_a = TRUE;
79072805
LW		 2237 s++;
2238 return s;
2239 case 'c':
3280af22 2240 PL_minus_c = TRUE;
79072805
LW		 2241 s++;
2242 return s;
2243 case 'd':
bbce6d69 2244 forbid_setid("-d");
4633a7c4 2245 s++;
70c94a19
RR		 2246 /* The following permits -d:Mod to accepts arguments following an =
2247 in the fashion that -MSome::Mod does. */
2248 if (*s == ':' || *s == '=') {
2249 char *start;
2250 SV *sv;
2251 sv = newSVpv("use Devel::", 0);
2252 start = ++s;
2253 /* We now allow -d:Module=Foo,Bar */
2254 while(isALNUM(*s) || *s==':') ++s;
2255 if (*s != '=')
2256 sv_catpv(sv, start);
2257 else {
2258 sv_catpvn(sv, start, s-start);
2259 sv_catpv(sv, " split(/,/,q{");
2260 sv_catpv(sv, ++s);
2261 sv_catpv(sv, "})");
2262 }
4633a7c4 2263 s += strlen(s);
70c94a19 2264 my_setenv("PERL5DB", SvPV(sv, PL_na));
4633a7c4 2265 }
ed094faf 2266 if (!PL_perldb) {
3280af22 2267 PL_perldb = PERLDB_ALL;
a0d0e21e 2268 init_debugger();
ed094faf 2269 }
79072805
LW		 2270 return s;
2271 case 'D':
0453d815 2272 {
79072805 2273#ifdef DEBUGGING
bbce6d69 2274 forbid_setid("-D");
79072805 2275 if (isALPHA(s[1])) {
04932ac8
DM		 2276 /* if adding extra options, remember to update DEBUG_MASK */
2277 static char debopts[] = "psltocPmfrxuLHXDSTR";
79072805
LW		 2278 char *d;
2279
93a17b20 2280 for (s++; *s && (d = strchr(debopts,*s)); s++)
3280af22 2281 PL_debug |= 1 << (d - debopts);
79072805
LW		 2282 }
2283 else {
3280af22 2284 PL_debug = atoi(s+1);
79072805
LW		 2285 for (s++; isDIGIT(*s); s++) ;
2286 }
aea4f609 2287 PL_debug |= DEBUG_TOP_FLAG;
79072805 2288#else
0453d815
PM		 2289 if (ckWARN_d(WARN_DEBUGGING))
2290 Perl_warner(aTHX_ WARN_DEBUGGING,
2291 "Recompile perl with -DDEBUGGING to use -D switch\n");
a0d0e21e 2292 for (s++; isALNUM(*s); s++) ;
79072805
LW		 2293#endif
2294 /*SUPPRESS 530*/
2295 return s;
0453d815 2296 }
4633a7c4 2297 case 'h':
ac27b0f5 2298 usage(PL_origargv[0]);
6ad3d225 2299 PerlProc_exit(0);
79072805 2300 case 'i':
3280af22
NIS		 2301 if (PL_inplace)
2302 Safefree(PL_inplace);
2303 PL_inplace = savepv(s+1);
79072805 2304 /*SUPPRESS 530*/
3280af22 2305 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
7b8d334a 2306 if (*s) {
fb73857a 2307 *s++ = '\0';
7b8d334a
GS		 2308 if (*s == '-') /* Additional switches on #! line. */
2309 s++;
2310 }
fb73857a 2311 return s;
4e49a025 2312 case 'I': /* -I handled both here and in parse_body() */
bbce6d69 2313 forbid_setid("-I");
fb73857a 2314 ++s;
2315 while (*s && isSPACE(*s))
2316 ++s;
2317 if (*s) {
774d564b 2318 char *e, *p;
0df16ed7
GS		 2319 p = s;
2320 /* ignore trailing spaces (possibly followed by other switches) */
2321 do {
2322 for (e = p; *e && !isSPACE(*e); e++) ;
2323 p = e;
2324 while (isSPACE(*p))
2325 p++;
2326 } while (*p && *p != '-');
2327 e = savepvn(s, e-s);
9c8a64f0 2328 incpush(e, TRUE, TRUE);
0df16ed7
GS		 2329 Safefree(e);
2330 s = p;
2331 if (*s == '-')
2332 s++;
79072805
LW		 2333 }
2334 else
a67e862a 2335 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 2336 return s;
79072805 2337 case 'l':
3280af22 2338 PL_minus_l = TRUE;
79072805 2339 s++;
7889fe52
NIS		 2340 if (PL_ors_sv) {
2341 SvREFCNT_dec(PL_ors_sv);
2342 PL_ors_sv = Nullsv;
2343 }
79072805 2344 if (isDIGIT(*s)) {
53305cf1 2345 I32 flags = 0;
7889fe52 2346 PL_ors_sv = newSVpvn("\n",1);
53305cf1
NC		 2347 numlen = 3 + (*s == '0');
2348 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW		 2349 s += numlen;
2350 }
2351 else {
8bfdd7d9 2352 if (RsPARA(PL_rs)) {
7889fe52
NIS		 2353 PL_ors_sv = newSVpvn("\n\n",2);
2354 }
2355 else {
8bfdd7d9 2356 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 2357 }
79072805
LW		 2358 }
2359 return s;
1a30305b 2360 case 'M':
bbce6d69 2361 forbid_setid("-M"); /* XXX ? */
1a30305b 2362 /* FALL THROUGH */
2363 case 'm':
bbce6d69 2364 forbid_setid("-m"); /* XXX ? */
1a30305b 2365 if (*++s) {
a5f75d66 2366 char *start;
11343788 2367 SV *sv;
a5f75d66
AD		 2368 char *use = "use ";
2369 /* -M-foo == 'no foo' */
2370 if (*s == '-') { use = "no "; ++s; }
11343788 2371 sv = newSVpv(use,0);
a5f75d66 2372 start = s;
1a30305b 2373 /* We allow -M'Module qw(Foo Bar)' */
c07a80fd 2374 while(isALNUM(*s) || *s==':') ++s;
2375 if (*s != '=') {
11343788 2376 sv_catpv(sv, start);
c07a80fd 2377 if (*(start-1) == 'm') {
2378 if (*s != '\0')
cea2e8a9 2379 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
11343788 2380 sv_catpv( sv, " ()");
c07a80fd 2381 }
2382 } else {
6df41af2 2383 if (s == start)
be98fb35
GS		 2384 Perl_croak(aTHX_ "Module name required with -%c option",
2385 s[-1]);
11343788
MB		 2386 sv_catpvn(sv, start, s-start);
2387 sv_catpv(sv, " split(/,/,q{");
2388 sv_catpv(sv, ++s);
2389 sv_catpv(sv, "})");
c07a80fd 2390 }
1a30305b 2391 s += strlen(s);
5c831c24 2392 if (!PL_preambleav)
3280af22
NIS		 2393 PL_preambleav = newAV();
2394 av_push(PL_preambleav, sv);
1a30305b 2395 }
2396 else
cea2e8a9 2397 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
1a30305b 2398 return s;
79072805 2399 case 'n':
3280af22 2400 PL_minus_n = TRUE;
79072805
LW		 2401 s++;
2402 return s;
2403 case 'p':
3280af22 2404 PL_minus_p = TRUE;
79072805
LW		 2405 s++;
2406 return s;
2407 case 's':
bbce6d69 2408 forbid_setid("-s");
3280af22 2409 PL_doswitches = TRUE;
79072805
LW		 2410 s++;
2411 return s;
6537fe72
MS		 2412 case 't':
2413 if (!PL_tainting)
2414 Perl_croak(aTHX_ "Too late for \"-t\" option");
2415 s++;
2416 return s;
463ee0b2 2417 case 'T':
3280af22 2418 if (!PL_tainting)
cea2e8a9 2419 Perl_croak(aTHX_ "Too late for \"-T\" option");
463ee0b2
LW		 2420 s++;
2421 return s;
79072805 2422 case 'u':
bf4acbe4
GS		 2423#ifdef MACOS_TRADITIONAL
2424 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2425#endif
3280af22 2426 PL_do_undump = TRUE;
79072805
LW		 2427 s++;
2428 return s;
2429 case 'U':
3280af22 2430 PL_unsafe = TRUE;
79072805
LW		 2431 s++;
2432 return s;
2433 case 'v':
8e9464f1 2434#if !defined(DGUX)
b0e47665 2435 PerlIO_printf(PerlIO_stdout(),
d2560b70 2436 Perl_form(aTHX_ "\nThis is perl, v%"VDf" built for %s",
b0e47665 2437 PL_patchlevel, ARCHNAME));
8e9464f1
JH		 2438#else /* DGUX */
2439/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
2440 PerlIO_printf(PerlIO_stdout(),
2441 Perl_form(aTHX_ "\nThis is perl, version %vd\n", PL_patchlevel));
2442 PerlIO_printf(PerlIO_stdout(),
2443 Perl_form(aTHX_ " built under %s at %s %s\n",
2444 OSNAME, __DATE__, __TIME__));
2445 PerlIO_printf(PerlIO_stdout(),
2446 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 2447 OSVERS));
8e9464f1
JH		 2448#endif /* !DGUX */
2449
fb73857a 2450#if defined(LOCAL_PATCH_COUNT)
2451 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS		 2452 PerlIO_printf(PerlIO_stdout(),
2453 "\n(with %d registered patch%s, "
2454 "see perl -V for more detail)",
2455 (int)LOCAL_PATCH_COUNT,
2456 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 2457#endif
1a30305b 2458
b0e47665 2459 PerlIO_printf(PerlIO_stdout(),
bc89e66f 2460 "\n\nCopyright 1987-2001, Larry Wall\n");
eae9c151
JH		 2461#ifdef MACOS_TRADITIONAL
2462 PerlIO_printf(PerlIO_stdout(),
03765510
JH		 2463 "\nMac OS port Copyright 1991-2001, Matthias Neeracher;\n"
2464 "maintained by Chris Nandor\n");
eae9c151 2465#endif
79072805 2466#ifdef MSDOS
b0e47665
GS		 2467 PerlIO_printf(PerlIO_stdout(),
2468 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff 2469#endif
2470#ifdef DJGPP
b0e47665
GS		 2471 PerlIO_printf(PerlIO_stdout(),
2472 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2473 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 2474#endif
79072805 2475#ifdef OS2
b0e47665
GS		 2476 PerlIO_printf(PerlIO_stdout(),
2477 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2478 "Version 5 port Copyright (c) 1994-1999, Andreas Kaiser, Ilya Zakharevich\n");
79072805 2479#endif
79072805 2480#ifdef atarist
b0e47665
GS		 2481 PerlIO_printf(PerlIO_stdout(),
2482 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 2483#endif
a3f9223b 2484#ifdef __BEOS__
b0e47665
GS		 2485 PerlIO_printf(PerlIO_stdout(),
2486 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 2487#endif
1d84e8df 2488#ifdef MPE
b0e47665 2489 PerlIO_printf(PerlIO_stdout(),
dc22e1c4 2490 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2001\n");
1d84e8df 2491#endif
9d116dd7 2492#ifdef OEMVS
b0e47665
GS		 2493 PerlIO_printf(PerlIO_stdout(),
2494 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 2495#endif
495c5fdc 2496#ifdef __VOS__
b0e47665
GS		 2497 PerlIO_printf(PerlIO_stdout(),
2498 "Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n");
495c5fdc 2499#endif
092bebab 2500#ifdef __OPEN_VM
b0e47665
GS		 2501 PerlIO_printf(PerlIO_stdout(),
2502 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 2503#endif
a1a0e61e 2504#ifdef POSIX_BC
b0e47665
GS		 2505 PerlIO_printf(PerlIO_stdout(),
2506 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 2507#endif
61ae2fbf 2508#ifdef __MINT__
b0e47665
GS		 2509 PerlIO_printf(PerlIO_stdout(),
2510 "MiNT port by Guido Flohr, 1997-1999\n");
61ae2fbf 2511#endif
f83d2536 2512#ifdef EPOC
b0e47665
GS		 2513 PerlIO_printf(PerlIO_stdout(),
2514 "EPOC port by Olaf Flebbe, 1999-2000\n");
f83d2536 2515#endif
e1caacb4
JH		 2516#ifdef UNDER_CE
2517 printf("WINCE port by Rainer Keuchel, 2001\n");
2518 printf("Built on " __DATE__ " " __TIME__ "\n\n");
2519 wce_hitreturn();
2520#endif
baed7233
DL		 2521#ifdef BINARY_BUILD_NOTICE
2522 BINARY_BUILD_NOTICE;
2523#endif
b0e47665
GS		 2524 PerlIO_printf(PerlIO_stdout(),
2525 "\n\
79072805 2526Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 2527GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687
GS		 2528Complete documentation for Perl, including FAQ lists, should be found on\n\
2529this system using `man perl' or `perldoc perl'. If you have access to the\n\
2530Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
6ad3d225 2531 PerlProc_exit(0);
79072805 2532 case 'w':
599cee73 2533 if (! (PL_dowarn & G_WARN_ALL_MASK))
ac27b0f5 2534 PL_dowarn |= G_WARN_ON;
599cee73
PM		 2535 s++;
2536 return s;
2537 case 'W':
ac27b0f5 2538 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
317ea90d
MS		 2539 if (!specialWARN(PL_compiling.cop_warnings))
2540 SvREFCNT_dec(PL_compiling.cop_warnings);
d3a7d8c7 2541 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM		 2542 s++;
2543 return s;
2544 case 'X':
ac27b0f5 2545 PL_dowarn = G_WARN_ALL_OFF;
317ea90d
MS		 2546 if (!specialWARN(PL_compiling.cop_warnings))
2547 SvREFCNT_dec(PL_compiling.cop_warnings);
d3a7d8c7 2548 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW		 2549 s++;
2550 return s;
a0d0e21e 2551 case '*':
79072805
LW		 2552 case ' ':
2553 if (s[1] == '-') /* Additional switches on #! line. */
2554 return s+2;
2555 break;
a0d0e21e 2556 case '-':
79072805 2557 case 0:
51882d45 2558#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS		 2559 case '\r':
2560#endif
79072805
LW		 2561 case '\n':
2562 case '\t':
2563 break;
aa689395 2564#ifdef ALTERNATE_SHEBANG
2565 case 'S': /* OS/2 needs -S on "extproc" line. */
2566 break;
2567#endif
a0d0e21e 2568 case 'P':
3280af22 2569 if (PL_preprocess)
a0d0e21e
LW		 2570 return s+1;
2571 /* FALL THROUGH */
79072805 2572 default:
cea2e8a9 2573 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805
LW		 2574 }
2575 return Nullch;
2576}
2577
2578/* compliments of Tom Christiansen */
2579
2580/* unexec() can be found in the Gnu emacs distribution */
ee580363 2581/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW		 2582
2583void
864dbfa3 2584Perl_my_unexec(pTHX)
79072805
LW		 2585{
2586#ifdef UNEXEC
46fc3d4c 2587 SV* prog;
2588 SV* file;
ee580363 2589 int status = 1;
79072805
LW		 2590 extern int etext;
2591
ee580363 2592 prog = newSVpv(BIN_EXP, 0);
46fc3d4c 2593 sv_catpv(prog, "/perl");
6b88bc9c 2594 file = newSVpv(PL_origfilename, 0);
46fc3d4c 2595 sv_catpv(file, ".perldump");
79072805 2596
ee580363
GS		 2597 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2598 /* unexec prints msg to stderr in case of failure */
6ad3d225 2599 PerlProc_exit(status);
79072805 2600#else
a5f75d66
AD		 2601# ifdef VMS
2602# include <lib$routines.h>
2603 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
aa689395 2604# else
79072805 2605 ABORT(); /* for use with undump */
aa689395 2606# endif
a5f75d66 2607#endif
79072805
LW		 2608}
2609
cb68f92d
GS		 2610/* initialize curinterp */
2611STATIC void
cea2e8a9 2612S_init_interp(pTHX)
cb68f92d
GS		 2613{
2614
acfe0abc
GS		 2615#ifdef MULTIPLICITY
2616# define PERLVAR(var,type)
2617# define PERLVARA(var,n,type)
2618# if defined(PERL_IMPLICIT_CONTEXT)
2619# if defined(USE_5005THREADS)
2620# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
c5be433b 2621# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
acfe0abc
GS		 2622# else /* !USE_5005THREADS */
2623# define PERLVARI(var,type,init) aTHX->var = init;
2624# define PERLVARIC(var,type,init) aTHX->var = init;
2625# endif /* USE_5005THREADS */
3967c732 2626# else
acfe0abc
GS		 2627# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2628# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
066ef5b5 2629# endif
acfe0abc
GS		 2630# include "intrpvar.h"
2631# ifndef USE_5005THREADS
2632# include "thrdvar.h"
2633# endif
2634# undef PERLVAR
2635# undef PERLVARA
2636# undef PERLVARI
2637# undef PERLVARIC
2638#else
2639# define PERLVAR(var,type)
2640# define PERLVARA(var,n,type)
2641# define PERLVARI(var,type,init) PL_##var = init;
2642# define PERLVARIC(var,type,init) PL_##var = init;
2643# include "intrpvar.h"
2644# ifndef USE_5005THREADS
2645# include "thrdvar.h"
2646# endif
2647# undef PERLVAR
2648# undef PERLVARA
2649# undef PERLVARI
2650# undef PERLVARIC
cb68f92d
GS		 2651#endif
2652
cb68f92d
GS		 2653}
2654
76e3520e 2655STATIC void
cea2e8a9 2656S_init_main_stash(pTHX)
79072805 2657{
463ee0b2 2658 GV *gv;
6e72f9df 2659
3d47000e 2660
ac27b0f5 2661
3280af22 2662 PL_curstash = PL_defstash = newHV();
79cb57f6 2663 PL_curstname = newSVpvn("main",4);
adbc6bb1
LW		 2664 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2665 SvREFCNT_dec(GvHV(gv));
3280af22 2666 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
463ee0b2 2667 SvREADONLY_on(gv);
3280af22
NIS		 2668 HvNAME(PL_defstash) = savepv("main");
2669 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2670 GvMULTI_on(PL_incgv);
2671 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2672 GvMULTI_on(PL_hintgv);
2673 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2674 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2675 GvMULTI_on(PL_errgv);
2676 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2677 GvMULTI_on(PL_replgv);
cea2e8a9 2678 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
38a03e6e
MB		 2679 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2680 sv_setpvn(ERRSV, "", 0);
3280af22 2681 PL_curstash = PL_defstash;
11faa288 2682 CopSTASH_set(&PL_compiling, PL_defstash);
ed094faf 2683 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
3280af22 2684 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
92d29cee 2685 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
4633a7c4 2686 /* We must init $/ before switches are processed. */
864dbfa3 2687 sv_setpvn(get_sv("/", TRUE), "\n", 1);
79072805
LW		 2688}
2689
76e3520e 2690STATIC void
cea2e8a9 2691S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
79072805 2692{
1b24ed4b
MS		 2693 char *quote;
2694 char *code;
2695 char *cpp_discard_flag;
2696 char *perl;
2697
6c4ab083 2698 *fdscript = -1;
79072805 2699
3280af22
NIS		 2700 if (PL_e_script) {
2701 PL_origfilename = savepv("-e");
96436eeb 2702 }
6c4ab083
GS		 2703 else {
2704 /* if find_script() returns, it returns a malloc()-ed value */
3280af22 2705 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
6c4ab083
GS		 2706
2707 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2708 char *s = scriptname + 8;
2709 *fdscript = atoi(s);
2710 while (isDIGIT(*s))
2711 s++;
2712 if (*s) {
2713 scriptname = savepv(s + 1);
3280af22
NIS		 2714 Safefree(PL_origfilename);
2715 PL_origfilename = scriptname;
6c4ab083
GS		 2716 }
2717 }
2718 }
2719
1b24ed4b
MS		 2720# ifdef USE_ITHREADS
2721 Safefree(CopFILE(PL_curcop));
2722# else
2723 SvREFCNT_dec(CopFILEGV(PL_curcop));
2724# endif
57843af0 2725 CopFILE_set(PL_curcop, PL_origfilename);
3280af22 2726 if (strEQ(PL_origfilename,"-"))
79072805 2727 scriptname = "";
01f988be 2728 if (*fdscript >= 0) {
3280af22 2729 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
1b24ed4b
MS		 2730# if defined(HAS_FCNTL) && defined(F_SETFD)
2731 if (PL_rsfp)
2732 /* ensure close-on-exec */
2733 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1);
2734# endif
96436eeb 2735 }
3280af22 2736 else if (PL_preprocess) {
46fc3d4c 2737 char *cpp_cfg = CPPSTDIN;
79cb57f6 2738 SV *cpp = newSVpvn("",0);
46fc3d4c 2739 SV *cmd = NEWSV(0,0);
2740
2741 if (strEQ(cpp_cfg, "cppstdin"))
cea2e8a9 2742 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
46fc3d4c 2743 sv_catpv(cpp, cpp_cfg);
79072805 2744
1b24ed4b
MS		 2745# ifndef VMS
2746 sv_catpvn(sv, "-I", 2);
2747 sv_catpv(sv,PRIVLIB_EXP);
2748# endif
46fc3d4c 2749
14953ddc
MB		 2750 DEBUG_P(PerlIO_printf(Perl_debug_log,
2751 "PL_preprocess: scriptname=\"%s\", cpp=\"%s\", sv=\"%s\", CPPMINUS=\"%s\"\n",
2752 scriptname, SvPVX (cpp), SvPVX (sv), CPPMINUS));
1b24ed4b
MS		 2753
2754# if defined(MSDOS) || defined(WIN32) || defined(VMS)
2755 quote = "\"";
2756# else
2757 quote = "'";
2758# endif
2759
2760# ifdef VMS
2761 cpp_discard_flag = "";
2762# else
2763 cpp_discard_flag = "-C";
2764# endif
2765
2766# ifdef OS2
2767 perl = os2_execname(aTHX);
2768# else
2769 perl = PL_origargv[0];
2770# endif
2771
2772
2773 /* This strips off Perl comments which might interfere with
2774 the C pre-processor, including #!. #line directives are
2775 deliberately stripped to avoid confusion with Perl's version
2776 of #line. FWP played some golf with it so it will fit
2777 into VMS's 255 character buffer.
2778 */
2779 if( PL_doextract )
2780 code = "(1../^#!.*perl/i)|/^\\s*#(?!\\s*((ifn?|un)def|(el|end)?if|define|include|else|error|pragma)\\b)/||!($|=1)||print";
2781 else
2782 code = "/^\\s*#(?!\\s*((ifn?|un)def|(el|end)?if|define|include|else|error|pragma)\\b)/||!($|=1)||print";
2783
2784 Perl_sv_setpvf(aTHX_ cmd, "\
2785%s -ne%s%s%s %s | %"SVf" %s %"SVf" %s",
2786 perl, quote, code, quote, scriptname, cpp,
2787 cpp_discard_flag, sv, CPPMINUS);
2788
3280af22 2789 PL_doextract = FALSE;
1b24ed4b
MS		 2790# ifdef IAMSUID /* actually, this is caught earlier */
2791 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
2792# ifdef HAS_SETEUID
2793 (void)seteuid(PL_uid); /* musn't stay setuid root */
2794# else
2795# ifdef HAS_SETREUID
2796 (void)setreuid((Uid_t)-1, PL_uid);
2797# else
2798# ifdef HAS_SETRESUID
2799 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
2800# else
2801 PerlProc_setuid(PL_uid);
2802# endif
2803# endif
2804# endif
b28d0864 2805 if (PerlProc_geteuid() != PL_uid)
cea2e8a9 2806 Perl_croak(aTHX_ "Can't do seteuid!\n");
79072805 2807 }
1b24ed4b 2808# endif /* IAMSUID */
0a6c758d 2809
1b24ed4b
MS		 2810 DEBUG_P(PerlIO_printf(Perl_debug_log,
2811 "PL_preprocess: cmd=\"%s\"\n",
0a6c758d
MS		 2812 SvPVX(cmd)));
2813
3280af22 2814 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
46fc3d4c 2815 SvREFCNT_dec(cmd);
2816 SvREFCNT_dec(cpp);
79072805
LW		 2817 }
2818 else if (!*scriptname) {
bbce6d69 2819 forbid_setid("program input from stdin");
3280af22 2820 PL_rsfp = PerlIO_stdin();
79072805 2821 }
96436eeb 2822 else {
3280af22 2823 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
1b24ed4b
MS		 2824# if defined(HAS_FCNTL) && defined(F_SETFD)
2825 if (PL_rsfp)
2826 /* ensure close-on-exec */
2827 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1);
2828# endif
96436eeb 2829 }
3280af22 2830 if (!PL_rsfp) {
1b24ed4b
MS		 2831# ifdef DOSUID
2832# ifndef IAMSUID /* in case script is not readable before setuid */
2833 if (PL_euid &&
2834 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
2835 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2836 {
2837 /* try again */
2838 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT,
2839 BIN_EXP, (int)PERL_REVISION,
2840 (int)PERL_VERSION,
2841 (int)PERL_SUBVERSION), PL_origargv);
2842 Perl_croak(aTHX_ "Can't do setuid\n");
2843 }
2844# endif
2845# endif
2846# ifdef IAMSUID
2847 errno = EPERM;
2848 Perl_croak(aTHX_ "Can't open perl script: %s\n",
2849 Strerror(errno));
2850# else
2851 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
2852 CopFILE(PL_curcop), Strerror(errno));
2853# endif
13281fa4 2854 }
79072805 2855}
8d063cd8 2856
7b89560d
JH		 2857/* Mention
2858 * I_SYSSTATVFS HAS_FSTATVFS
2859 * I_SYSMOUNT
c890dc6c 2860 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
7b89560d
JH		 2861 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2862 * here so that metaconfig picks them up. */
2863
104d25b7 2864#ifdef IAMSUID
864dbfa3 2865STATIC int
e688b231 2866S_fd_on_nosuid_fs(pTHX_ int fd)
104d25b7 2867{
0545a864
JH		 2868 int check_okay = 0; /* able to do all the required sys/libcalls */
2869 int on_nosuid = 0; /* the fd is on a nosuid fs */
104d25b7 2870/*
ad27e871 2871 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
e688b231 2872 * fstatvfs() is UNIX98.
0545a864 2873 * fstatfs() is 4.3 BSD.
ad27e871 2874 * ustat()+getmnt() is pre-4.3 BSD.
0545a864
JH		 2875 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2876 * an irrelevant filesystem while trying to reach the right one.
104d25b7
JH		 2877 */
2878
6439433f
JH		 2879#undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2880
2881# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2882 defined(HAS_FSTATVFS)
2883# define FD_ON_NOSUID_CHECK_OKAY
104d25b7 2884 struct statvfs stfs;
6439433f 2885
104d25b7
JH		 2886 check_okay = fstatvfs(fd, &stfs) == 0;
2887 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
6439433f 2888# endif /* fstatvfs */
ac27b0f5 2889
6439433f
JH		 2890# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2891 defined(PERL_MOUNT_NOSUID) && \
2892 defined(HAS_FSTATFS) && \
2893 defined(HAS_STRUCT_STATFS) && \
2894 defined(HAS_STRUCT_STATFS_F_FLAGS)
2895# define FD_ON_NOSUID_CHECK_OKAY
e688b231 2896 struct statfs stfs;
6439433f 2897
104d25b7 2898 check_okay = fstatfs(fd, &stfs) == 0;
104d25b7 2899 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
6439433f
JH		 2900# endif /* fstatfs */
2901
2902# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2903 defined(PERL_MOUNT_NOSUID) && \
2904 defined(HAS_FSTAT) && \
2905 defined(HAS_USTAT) && \
2906 defined(HAS_GETMNT) && \
2907 defined(HAS_STRUCT_FS_DATA) && \
2908 defined(NOSTAT_ONE)
2909# define FD_ON_NOSUID_CHECK_OKAY
0545a864 2910 struct stat fdst;
6439433f 2911
0545a864 2912 if (fstat(fd, &fdst) == 0) {
6439433f
JH		 2913 struct ustat us;
2914 if (ustat(fdst.st_dev, &us) == 0) {
2915 struct fs_data fsd;
2916 /* NOSTAT_ONE here because we're not examining fields which
2917 * vary between that case and STAT_ONE. */
ad27e871 2918 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
6439433f
JH		 2919 size_t cmplen = sizeof(us.f_fname);
2920 if (sizeof(fsd.fd_req.path) < cmplen)
2921 cmplen = sizeof(fsd.fd_req.path);
2922 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2923 fdst.st_dev == fsd.fd_req.dev) {
2924 check_okay = 1;
2925 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2926 }
2927 }
2928 }
2929 }
0545a864 2930 }
6439433f
JH		 2931# endif /* fstat+ustat+getmnt */
2932
2933# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2934 defined(HAS_GETMNTENT) && \
2935 defined(HAS_HASMNTOPT) && \
2936 defined(MNTOPT_NOSUID)
2937# define FD_ON_NOSUID_CHECK_OKAY
2938 FILE *mtab = fopen("/etc/mtab", "r");
2939 struct mntent *entry;
2940 struct stat stb, fsb;
104d25b7
JH		 2941
2942 if (mtab && (fstat(fd, &stb) == 0)) {
6439433f
JH		 2943 while (entry = getmntent(mtab)) {
2944 if (stat(entry->mnt_dir, &fsb) == 0
2945 && fsb.st_dev == stb.st_dev)
2946 {
2947 /* found the filesystem */
2948 check_okay = 1;
2949 if (hasmntopt(entry, MNTOPT_NOSUID))
2950 on_nosuid = 1;
2951 break;
2952 } /* A single fs may well fail its stat(). */
2953 }
104d25b7
JH		 2954 }
2955 if (mtab)
6439433f
JH		 2956 fclose(mtab);
2957# endif /* getmntent+hasmntopt */
0545a864 2958
ac27b0f5 2959 if (!check_okay)
0545a864 2960 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
104d25b7
JH		 2961 return on_nosuid;
2962}
2963#endif /* IAMSUID */
2964
76e3520e 2965STATIC void
cea2e8a9 2966S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
79072805 2967{
155aba94 2968#ifdef IAMSUID
96436eeb 2969 int which;
155aba94 2970#endif
96436eeb 2971
13281fa4
LW		 2972 /* do we need to emulate setuid on scripts? */
2973
2974 /* This code is for those BSD systems that have setuid #! scripts disabled
2975 * in the kernel because of a security problem. Merely defining DOSUID
2976 * in perl will not fix that problem, but if you have disabled setuid
2977 * scripts in the kernel, this will attempt to emulate setuid and setgid
2978 * on scripts that have those now-otherwise-useless bits set. The setuid
27e2fb84
LW		 2979 * root version must be called suidperl or sperlN.NNN. If regular perl
2980 * discovers that it has opened a setuid script, it calls suidperl with
2981 * the same argv that it had. If suidperl finds that the script it has
2982 * just opened is NOT setuid root, it sets the effective uid back to the
2983 * uid. We don't just make perl setuid root because that loses the
2984 * effective uid we had before invoking perl, if it was different from the
2985 * uid.
13281fa4
LW		 2986 *
2987 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2988 * be defined in suidperl only. suidperl must be setuid root. The
2989 * Configure script will set this up for you if you want it.
2990 */
a687059c 2991
13281fa4 2992#ifdef DOSUID
6e72f9df 2993 char *s, *s2;
a0d0e21e 2994
b28d0864 2995 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
cea2e8a9 2996 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
b28d0864 2997 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
79072805 2998 I32 len;
2d8e6c8d 2999 STRLEN n_a;
13281fa4 3000
a687059c 3001#ifdef IAMSUID
fe14fcc3 3002#ifndef HAS_SETREUID
a687059c
LW		 3003 /* On this access check to make sure the directories are readable,
3004 * there is actually a small window that the user could use to make
3005 * filename point to an accessible directory. So there is a faint
3006 * chance that someone could execute a setuid script down in a
3007 * non-accessible directory. I don't know what to do about that.
3008 * But I don't think it's too important. The manual lies when
3009 * it says access() is useful in setuid programs.
3010 */
cc49e20b 3011 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
cea2e8a9 3012 Perl_croak(aTHX_ "Permission denied");
a687059c
LW		 3013#else
3014 /* If we can swap euid and uid, then we can determine access rights
3015 * with a simple stat of the file, and then compare device and
3016 * inode to make sure we did stat() on the same file we opened.
3017 * Then we just have to make sure he or she can execute it.
3018 */
3019 {
3020 struct stat tmpstatbuf;
3021
85e6fe83
LW		 3022 if (
3023#ifdef HAS_SETREUID
b28d0864 3024 setreuid(PL_euid,PL_uid) < 0
a0d0e21e
LW		 3025#else
3026# if HAS_SETRESUID
b28d0864 3027 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
a0d0e21e 3028# endif
85e6fe83 3029#endif
b28d0864 3030 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
cea2e8a9 3031 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
cc49e20b 3032 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
cea2e8a9 3033 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
2bb3463c 3034#if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
e688b231 3035 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
cea2e8a9 3036 Perl_croak(aTHX_ "Permission denied");
104d25b7 3037#endif
b28d0864
NIS		 3038 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
3039 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
3040 (void)PerlIO_close(PL_rsfp);
cea2e8a9 3041 Perl_croak(aTHX_ "Permission denied\n");
a687059c 3042 }
85e6fe83
LW		 3043 if (
3044#ifdef HAS_SETREUID
b28d0864 3045 setreuid(PL_uid,PL_euid) < 0
a0d0e21e
LW		 3046#else
3047# if defined(HAS_SETRESUID)
b28d0864 3048 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
a0d0e21e 3049# endif
85e6fe83 3050#endif
b28d0864 3051 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
cea2e8a9 3052 Perl_croak(aTHX_ "Can't reswap uid and euid");
b28d0864 3053 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
cea2e8a9 3054 Perl_croak(aTHX_ "Permission denied\n");
a687059c 3055 }
fe14fcc3 3056#endif /* HAS_SETREUID */
a687059c
LW		 3057#endif /* IAMSUID */
3058
b28d0864 3059 if (!S_ISREG(PL_statbuf.st_mode))
cea2e8a9 3060 Perl_croak(aTHX_ "Permission denied");
b28d0864 3061 if (PL_statbuf.st_mode & S_IWOTH)
cea2e8a9 3062 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
6b88bc9c 3063 PL_doswitches = FALSE; /* -s is insecure in suid */
57843af0 3064 CopLINE_inc(PL_curcop);
6b88bc9c 3065 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
2d8e6c8d 3066 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
cea2e8a9 3067 Perl_croak(aTHX_ "No #! line");
2d8e6c8d 3068 s = SvPV(PL_linestr,n_a)+2;
663a0e37 3069 if (*s == ' ') s++;
45d8adaa 3070 while (!isSPACE(*s)) s++;
2d8e6c8d 3071 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
6e72f9df 3072 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
3073 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
cea2e8a9 3074 Perl_croak(aTHX_ "Not a perl script");
a687059c 3075 while (*s == ' ' || *s == '\t') s++;
13281fa4
LW		 3076 /*
3077 * #! arg must be what we saw above. They can invoke it by
3078 * mentioning suidperl explicitly, but they may not add any strange
3079 * arguments beyond what #! says if they do invoke suidperl that way.
3080 */
3081 len = strlen(validarg);
3082 if (strEQ(validarg," PHOOEY ") ||
45d8adaa 3083 strnNE(s,validarg,len) || !isSPACE(s[len]))
cea2e8a9 3084 Perl_croak(aTHX_ "Args must match #! line");
a687059c
LW		 3085
3086#ifndef IAMSUID
b28d0864
NIS		 3087 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
3088 PL_euid == PL_statbuf.st_uid)
3089 if (!PL_do_undump)
cea2e8a9 3090 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
a687059c
LW		 3091FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3092#endif /* IAMSUID */
13281fa4 3093
b28d0864
NIS		 3094 if (PL_euid) { /* oops, we're not the setuid root perl */
3095 (void)PerlIO_close(PL_rsfp);
13281fa4 3096#ifndef IAMSUID
46fc3d4c 3097 /* try again */
a7cb1f99 3098 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS		 3099 (int)PERL_REVISION, (int)PERL_VERSION,
3100 (int)PERL_SUBVERSION), PL_origargv);
13281fa4 3101#endif
cea2e8a9 3102 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4
LW		 3103 }
3104
b28d0864 3105 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
fe14fcc3 3106#ifdef HAS_SETEGID
b28d0864 3107 (void)setegid(PL_statbuf.st_gid);
a687059c 3108#else
fe14fcc3 3109#ifdef HAS_SETREGID
b28d0864 3110 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
85e6fe83
LW		 3111#else
3112#ifdef HAS_SETRESGID
b28d0864 3113 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
a687059c 3114#else
b28d0864 3115 PerlProc_setgid(PL_statbuf.st_gid);
a687059c
LW		 3116#endif
3117#endif
85e6fe83 3118#endif
b28d0864 3119 if (PerlProc_getegid() != PL_statbuf.st_gid)
cea2e8a9 3120 Perl_croak(aTHX_ "Can't do setegid!\n");
83025b21 3121 }
b28d0864
NIS		 3122 if (PL_statbuf.st_mode & S_ISUID) {
3123 if (PL_statbuf.st_uid != PL_euid)
fe14fcc3 3124#ifdef HAS_SETEUID
b28d0864 3125 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
a687059c 3126#else
fe14fcc3 3127#ifdef HAS_SETREUID
b28d0864 3128 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
85e6fe83
LW		 3129#else
3130#ifdef HAS_SETRESUID
b28d0864 3131 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
a687059c 3132#else
b28d0864 3133 PerlProc_setuid(PL_statbuf.st_uid);
a687059c
LW		 3134#endif
3135#endif
85e6fe83 3136#endif
b28d0864 3137 if (PerlProc_geteuid() != PL_statbuf.st_uid)
cea2e8a9 3138 Perl_croak(aTHX_ "Can't do seteuid!\n");
a687059c 3139 }
b28d0864 3140 else if (PL_uid) { /* oops, mustn't run as root */
fe14fcc3 3141#ifdef HAS_SETEUID
b28d0864 3142 (void)seteuid((Uid_t)PL_uid);
a687059c 3143#else
fe14fcc3 3144#ifdef HAS_SETREUID
b28d0864 3145 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
a687059c 3146#else
85e6fe83 3147#ifdef HAS_SETRESUID
b28d0864 3148 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
85e6fe83 3149#else
b28d0864 3150 PerlProc_setuid((Uid_t)PL_uid);
85e6fe83 3151#endif
a687059c
LW		 3152#endif
3153#endif
b28d0864 3154 if (PerlProc_geteuid() != PL_uid)
cea2e8a9 3155 Perl_croak(aTHX_ "Can't do seteuid!\n");
83025b21 3156 }
748a9306 3157 init_ids();
b28d0864 3158 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
cea2e8a9 3159 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
13281fa4
LW		 3160 }
3161#ifdef IAMSUID
6b88bc9c 3162 else if (PL_preprocess)
cea2e8a9 3163 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
96436eeb 3164 else if (fdscript >= 0)
cea2e8a9 3165 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
13281fa4 3166 else
cea2e8a9 3167 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
96436eeb 3168
3169 /* We absolutely must clear out any saved ids here, so we */
3170 /* exec the real perl, substituting fd script for scriptname. */
3171 /* (We pass script name as "subdir" of fd, which perl will grok.) */
b28d0864
NIS		 3172 PerlIO_rewind(PL_rsfp);
3173 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
6b88bc9c
GS		 3174 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3175 if (!PL_origargv[which])
cea2e8a9
GS		 3176 Perl_croak(aTHX_ "Permission denied");
3177 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
6b88bc9c 3178 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
96436eeb 3179#if defined(HAS_FCNTL) && defined(F_SETFD)
b28d0864 3180 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
96436eeb 3181#endif
a7cb1f99 3182 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS		 3183 (int)PERL_REVISION, (int)PERL_VERSION,
3184 (int)PERL_SUBVERSION), PL_origargv);/* try again */
cea2e8a9 3185 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4 3186#endif /* IAMSUID */
a687059c 3187#else /* !DOSUID */
3280af22 3188 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
a687059c 3189#ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
b28d0864
NIS		 3190 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3191 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
a687059c 3192 ||
b28d0864 3193 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
a687059c 3194 )
b28d0864 3195 if (!PL_do_undump)
cea2e8a9 3196 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
a687059c
LW		 3197FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3198#endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3199 /* not set-id, must be wrapped */
a687059c 3200 }
13281fa4 3201#endif /* DOSUID */
79072805 3202}
13281fa4 3203
76e3520e 3204STATIC void
cea2e8a9 3205S_find_beginning(pTHX)
79072805 3206{
6e72f9df 3207 register char *s, *s2;
33b78306
LW		 3208
3209 /* skip forward in input to the real script? */
3210
bbce6d69 3211 forbid_setid("-x");
bf4acbe4 3212#ifdef MACOS_TRADITIONAL
084592ab 3213 /* Since the Mac OS does not honor #! arguments for us, we do it ourselves */
ac27b0f5 3214
bf4acbe4
GS		 3215 while (PL_doextract || gMacPerl_AlwaysExtract) {
3216 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3217 if (!gMacPerl_AlwaysExtract)
3218 Perl_croak(aTHX_ "No Perl script found in input\n");
3219
3220 if (PL_doextract) /* require explicit override ? */
3221 if (!OverrideExtract(PL_origfilename))
3222 Perl_croak(aTHX_ "User aborted script\n");
3223 else
3224 PL_doextract = FALSE;
3225
3226 /* Pater peccavi, file does not have #! */
3227 PerlIO_rewind(PL_rsfp);
ac27b0f5 3228
bf4acbe4
GS		 3229 break;
3230 }
3231#else
3280af22
NIS		 3232 while (PL_doextract) {
3233 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
cea2e8a9 3234 Perl_croak(aTHX_ "No Perl script found in input\n");
bf4acbe4 3235#endif
4f0c37ba
IZ		 3236 s2 = s;
3237 if (*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))) {
3280af22
NIS		 3238 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3239 PL_doextract = FALSE;
6e72f9df 3240 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3241 s2 = s;
3242 while (*s == ' ' || *s == '\t') s++;
3243 if (*s++ == '-') {
3244 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3245 if (strnEQ(s2-4,"perl",4))
3246 /*SUPPRESS 530*/
155aba94
GS		 3247 while ((s = moreswitches(s)))
3248 ;
33b78306 3249 }
95e8664e
CN		 3250#ifdef MACOS_TRADITIONAL
3251 break;
3252#endif
83025b21
LW		 3253 }
3254 }
3255}
3256
afe37c7d 3257
76e3520e 3258STATIC void
cea2e8a9 3259S_init_ids(pTHX)
352d5a3a 3260{
d8eceb89
JH		 3261 PL_uid = PerlProc_getuid();
3262 PL_euid = PerlProc_geteuid();
3263 PL_gid = PerlProc_getgid();
3264 PL_egid = PerlProc_getegid();
748a9306 3265#ifdef VMS
b28d0864
NIS		 3266 PL_uid |= PL_gid << 16;
3267 PL_euid |= PL_egid << 16;
748a9306 3268#endif
3280af22 3269 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
748a9306 3270}
79072805 3271
76e3520e 3272STATIC void
cea2e8a9 3273S_forbid_setid(pTHX_ char *s)
bbce6d69 3274{
3280af22 3275 if (PL_euid != PL_uid)
cea2e8a9 3276 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3280af22 3277 if (PL_egid != PL_gid)
cea2e8a9 3278 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
bbce6d69 3279}
3280
1ee4443e
IZ		 3281void
3282Perl_init_debugger(pTHX)
748a9306 3283{
1ee4443e
IZ		 3284 HV *ostash = PL_curstash;
3285
3280af22
NIS		 3286 PL_curstash = PL_debstash;
3287 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3288 AvREAL_off(PL_dbargs);
3289 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3290 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3291 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
1ee4443e 3292 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3280af22 3293 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3294 sv_setiv(PL_DBsingle, 0);
3280af22 3295 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3296 sv_setiv(PL_DBtrace, 0);
3280af22 3297 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3298 sv_setiv(PL_DBsignal, 0);
1ee4443e 3299 PL_curstash = ostash;
352d5a3a
LW		 3300}
3301
2ce36478
SM		 3302#ifndef STRESS_REALLOC
3303#define REASONABLE(size) (size)
3304#else
3305#define REASONABLE(size) (1) /* unreasonable */
3306#endif
3307
11343788 3308void
cea2e8a9 3309Perl_init_stacks(pTHX)
79072805 3310{
e336de0d 3311 /* start with 128-item stack and 8K cxstack */
3280af22 3312 PL_curstackinfo = new_stackinfo(REASONABLE(128),
e336de0d 3313 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3280af22
NIS		 3314 PL_curstackinfo->si_type = PERLSI_MAIN;
3315 PL_curstack = PL_curstackinfo->si_stack;
3316 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
79072805 3317
3280af22
NIS		 3318 PL_stack_base = AvARRAY(PL_curstack);
3319 PL_stack_sp = PL_stack_base;
3320 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
8990e307 3321
3280af22
NIS		 3322 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3323 PL_tmps_floor = -1;
3324 PL_tmps_ix = -1;
3325 PL_tmps_max = REASONABLE(128);
8990e307 3326
3280af22
NIS		 3327 New(54,PL_markstack,REASONABLE(32),I32);
3328 PL_markstack_ptr = PL_markstack;
3329 PL_markstack_max = PL_markstack + REASONABLE(32);
79072805 3330
ce2f7c3b 3331 SET_MARK_OFFSET;
e336de0d 3332
3280af22
NIS		 3333 New(54,PL_scopestack,REASONABLE(32),I32);
3334 PL_scopestack_ix = 0;
3335 PL_scopestack_max = REASONABLE(32);
79072805 3336
3280af22
NIS		 3337 New(54,PL_savestack,REASONABLE(128),ANY);
3338 PL_savestack_ix = 0;
3339 PL_savestack_max = REASONABLE(128);
79072805 3340
3280af22
NIS		 3341 New(54,PL_retstack,REASONABLE(16),OP*);
3342 PL_retstack_ix = 0;
3343 PL_retstack_max = REASONABLE(16);
378cc40b 3344}
33b78306 3345
2ce36478
SM		 3346#undef REASONABLE
3347
76e3520e 3348STATIC void
cea2e8a9 3349S_nuke_stacks(pTHX)
6e72f9df 3350{
3280af22
NIS		 3351 while (PL_curstackinfo->si_next)
3352 PL_curstackinfo = PL_curstackinfo->si_next;
3353 while (PL_curstackinfo) {
3354 PERL_SI *p = PL_curstackinfo->si_prev;
bac4b2ad 3355 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3280af22
NIS		 3356 Safefree(PL_curstackinfo->si_cxstack);
3357 Safefree(PL_curstackinfo);
3358 PL_curstackinfo = p;
e336de0d 3359 }
3280af22
NIS		 3360 Safefree(PL_tmps_stack);
3361 Safefree(PL_markstack);
3362 Safefree(PL_scopestack);
3363 Safefree(PL_savestack);
3364 Safefree(PL_retstack);
378cc40b 3365}
33b78306 3366
76e3520e 3367STATIC void
cea2e8a9 3368S_init_lexer(pTHX)
8990e307 3369{
06039172 3370 PerlIO *tmpfp;
3280af22
NIS		 3371 tmpfp = PL_rsfp;
3372 PL_rsfp = Nullfp;
3373 lex_start(PL_linestr);
3374 PL_rsfp = tmpfp;
79cb57f6 3375 PL_subname = newSVpvn("main",4);
8990e307
LW		 3376}
3377
76e3520e 3378STATIC void
cea2e8a9 3379S_init_predump_symbols(pTHX)
45d8adaa 3380{
93a17b20 3381 GV *tmpgv;
af8c498a 3382 IO *io;
79072805 3383
864dbfa3 3384 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3280af22
NIS		 3385 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3386 GvMULTI_on(PL_stdingv);
af8c498a 3387 io = GvIOp(PL_stdingv);
a04651f4 3388 IoTYPE(io) = IoTYPE_RDONLY;
af8c498a 3389 IoIFP(io) = PerlIO_stdin();
adbc6bb1 3390 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
a5f75d66 3391 GvMULTI_on(tmpgv);
af8c498a 3392 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3393
85e6fe83 3394 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
a5f75d66 3395 GvMULTI_on(tmpgv);
af8c498a 3396 io = GvIOp(tmpgv);
a04651f4 3397 IoTYPE(io) = IoTYPE_WRONLY;
af8c498a 3398 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
4633a7c4 3399 setdefout(tmpgv);
adbc6bb1 3400 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
a5f75d66 3401 GvMULTI_on(tmpgv);
af8c498a 3402 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3403
bf49b057
GS		 3404 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3405 GvMULTI_on(PL_stderrgv);
3406 io = GvIOp(PL_stderrgv);
a04651f4 3407 IoTYPE(io) = IoTYPE_WRONLY;
af8c498a 3408 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
adbc6bb1 3409 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
a5f75d66 3410 GvMULTI_on(tmpgv);
af8c498a 3411 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3412
3280af22 3413 PL_statname = NEWSV(66,0); /* last filename we did stat on */
ab821d7f 3414
bf4acbe4
GS		 3415 if (PL_osname)
3416 Safefree(PL_osname);
3417 PL_osname = savepv(OSNAME);
79072805 3418}
33b78306 3419
a11ec5a9
RGS		 3420void
3421Perl_init_argv_symbols(pTHX_ register int argc, register char **argv)
33b78306 3422{
79072805 3423 char *s;
79072805 3424 argc--,argv++; /* skip name of script */
3280af22 3425 if (PL_doswitches) {
79072805
LW		 3426 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3427 if (!argv[0][1])
3428 break;
379d538a 3429 if (argv[0][1] == '-' && !argv[0][2]) {
79072805
LW		 3430 argc--,argv++;
3431 break;
3432 }
155aba94 3433 if ((s = strchr(argv[0], '='))) {
79072805 3434 *s++ = '\0';
85e6fe83 3435 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
79072805
LW		 3436 }
3437 else
85e6fe83 3438 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
fe14fcc3 3439 }
79072805 3440 }
a11ec5a9
RGS		 3441 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3442 GvMULTI_on(PL_argvgv);
3443 (void)gv_AVadd(PL_argvgv);
3444 av_clear(GvAVn(PL_argvgv));
3445 for (; argc > 0; argc--,argv++) {
3446 SV *sv = newSVpv(argv[0],0);
3447 av_push(GvAVn(PL_argvgv),sv);
3448 if (PL_widesyscalls)
3449 (void)sv_utf8_decode(sv);
3450 }
3451 }
3452}
3453
04fee9b5
NIS		 3454#ifdef HAS_PROCSELFEXE
3455/* This is a function so that we don't hold on to MAXPATHLEN
8338e367 3456 bytes of stack longer than necessary
04fee9b5
NIS		 3457 */
3458STATIC void
3459S_procself_val(pTHX_ SV *sv, char *arg0)
3460{
3461 char buf[MAXPATHLEN];
d13a6521 3462 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
04fee9b5
NIS		 3463 if (len > 0) {
3464 sv_setpvn(sv,buf,len);
3465 }
3466 else {
3467 sv_setpv(sv,arg0);
3468 }
3469}
3470#endif /* HAS_PROCSELFEXE */
3471
a11ec5a9
RGS		 3472STATIC void
3473S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
3474{
3475 char *s;
3476 SV *sv;
3477 GV* tmpgv;
a11ec5a9 3478
3280af22
NIS		 3479 PL_toptarget = NEWSV(0,0);
3480 sv_upgrade(PL_toptarget, SVt_PVFM);
3481 sv_setpvn(PL_toptarget, "", 0);
3482 PL_bodytarget = NEWSV(0,0);
3483 sv_upgrade(PL_bodytarget, SVt_PVFM);
3484 sv_setpvn(PL_bodytarget, "", 0);
3485 PL_formtarget = PL_bodytarget;
79072805 3486
bbce6d69 3487 TAINT;
a11ec5a9
RGS		 3488
3489 init_argv_symbols(argc,argv);
3490
155aba94 3491 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
bf4acbe4
GS		 3492#ifdef MACOS_TRADITIONAL
3493 /* $0 is not majick on a Mac */
3494 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3495#else
3280af22 3496 sv_setpv(GvSV(tmpgv),PL_origfilename);
79072805 3497 magicname("0", "0", 1);
bf4acbe4 3498#endif
79072805 3499 }
04fee9b5
NIS		 3500 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV))) {/* $^X */
3501#ifdef HAS_PROCSELFEXE
3502 S_procself_val(aTHX_ GvSV(tmpgv), PL_origargv[0]);
3503#else
8338e367 3504#ifdef OS2
23da6c43 3505 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
8338e367
JH		 3506#else
3507 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
3508#endif
04fee9b5
NIS		 3509#endif
3510 }
155aba94 3511 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
79072805 3512 HV *hv;
3280af22
NIS		 3513 GvMULTI_on(PL_envgv);
3514 hv = GvHVn(PL_envgv);
14befaf4 3515 hv_magic(hv, Nullgv, PERL_MAGIC_env);
fa6a1c44 3516#ifdef USE_ENVIRON_ARRAY
4633a7c4
LW		 3517 /* Note that if the supplied env parameter is actually a copy
3518 of the global environ then it may now point to free'd memory
3519 if the environment has been modified since. To avoid this
3520 problem we treat env==NULL as meaning 'use the default'
3521 */
3522 if (!env)
3523 env = environ;
5aabfad6 3524 if (env != environ)
79072805 3525 environ[0] = Nullch;
764df951
IZ		 3526 if (env)
3527 for (; *env; env++) {
93a17b20 3528 if (!(s = strchr(*env,'=')))
79072805 3529 continue;
60ce6247 3530#if defined(MSDOS)
61968511 3531 *s = '\0';
137443ea 3532 (void)strupr(*env);
61968511 3533 *s = '=';
137443ea 3534#endif
61968511 3535 sv = newSVpv(s+1, 0);
79072805 3536 (void)hv_store(hv, *env, s - *env, sv, 0);
61968511
GA		 3537 if (env != environ)
3538 mg_set(sv);
764df951 3539 }
103a7189 3540#endif /* USE_ENVIRON_ARRAY */
79072805 3541 }
bbce6d69 3542 TAINT_NOT;
306196c3
MS		 3543 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV))) {
3544 SvREADONLY_off(GvSV(tmpgv));
7766f137 3545 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
306196c3
MS		 3546 SvREADONLY_on(GvSV(tmpgv));
3547 }
33b78306 3548}
34de22dd 3549
76e3520e 3550STATIC void
cea2e8a9 3551S_init_perllib(pTHX)
34de22dd 3552{
85e6fe83 3553 char *s;
3280af22 3554 if (!PL_tainting) {
552a7a9b 3555#ifndef VMS
76e3520e 3556 s = PerlEnv_getenv("PERL5LIB");
85e6fe83 3557 if (s)
9c8a64f0 3558 incpush(s, TRUE, TRUE);
85e6fe83 3559 else
9c8a64f0 3560 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE);
552a7a9b 3561#else /* VMS */
3562 /* Treat PERL5?LIB as a possible search list logical name -- the
3563 * "natural" VMS idiom for a Unix path string. We allow each
3564 * element to be a set of |-separated directories for compatibility.
3565 */
3566 char buf[256];
3567 int idx = 0;
3568 if (my_trnlnm("PERL5LIB",buf,0))
9c8a64f0 3569 do { incpush(buf,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
552a7a9b 3570 else
9c8a64f0 3571 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE);
552a7a9b 3572#endif /* VMS */
85e6fe83 3573 }
34de22dd 3574
c90c0ff4 3575/* Use the ~-expanded versions of APPLLIB (undocumented),
65f19062 3576 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
df5cef82 3577*/
4633a7c4 3578#ifdef APPLLIB_EXP
9c8a64f0 3579 incpush(APPLLIB_EXP, TRUE, TRUE);
16d20bd9 3580#endif
4633a7c4 3581
fed7345c 3582#ifdef ARCHLIB_EXP
9c8a64f0 3583 incpush(ARCHLIB_EXP, FALSE, FALSE);
a0d0e21e 3584#endif
bf4acbe4
GS		 3585#ifdef MACOS_TRADITIONAL
3586 {
3587 struct stat tmpstatbuf;
3588 SV * privdir = NEWSV(55, 0);
3589 char * macperl = PerlEnv_getenv("MACPERL");
3590
3591 if (!macperl)
3592 macperl = "";
3593
3594 Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl);
3595 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3596 incpush(SvPVX(privdir), TRUE, FALSE);
3597 Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl);
3598 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3599 incpush(SvPVX(privdir), TRUE, FALSE);
ac27b0f5 3600
bf4acbe4
GS		 3601 SvREFCNT_dec(privdir);
3602 }
3603 if (!PL_tainting)
3604 incpush(":", FALSE, FALSE);
3605#else
fed7345c 3606#ifndef PRIVLIB_EXP
65f19062 3607# define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
34de22dd 3608#endif
ac27b0f5 3609#if defined(WIN32)
9c8a64f0 3610 incpush(PRIVLIB_EXP, TRUE, FALSE);
00dc2f4f 3611#else
9c8a64f0 3612 incpush(PRIVLIB_EXP, FALSE, FALSE);
00dc2f4f 3613#endif
4633a7c4 3614
65f19062 3615#ifdef SITEARCH_EXP
3b290362
GS		 3616 /* sitearch is always relative to sitelib on Windows for
3617 * DLL-based path intuition to work correctly */
3618# if !defined(WIN32)
9c8a64f0 3619 incpush(SITEARCH_EXP, FALSE, FALSE);
65f19062
GS		 3620# endif
3621#endif
3622
4633a7c4 3623#ifdef SITELIB_EXP
65f19062 3624# if defined(WIN32)
9c8a64f0 3625 incpush(SITELIB_EXP, TRUE, FALSE); /* this picks up sitearch as well */
65f19062 3626# else
9c8a64f0 3627 incpush(SITELIB_EXP, FALSE, FALSE);
65f19062
GS		 3628# endif
3629#endif
189d1e8d 3630
65f19062 3631#ifdef SITELIB_STEM /* Search for version-specific dirs below here */
9c8a64f0 3632 incpush(SITELIB_STEM, FALSE, TRUE);
81c6dfba 3633#endif
65f19062
GS		 3634
3635#ifdef PERL_VENDORARCH_EXP
4ea817c6 3636 /* vendorarch is always relative to vendorlib on Windows for
3b290362
GS		 3637 * DLL-based path intuition to work correctly */
3638# if !defined(WIN32)
9c8a64f0 3639 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE);
65f19062 3640# endif
4b03c463 3641#endif
65f19062
GS		 3642
3643#ifdef PERL_VENDORLIB_EXP
3644# if defined(WIN32)
9c8a64f0 3645 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE); /* this picks up vendorarch as well */
65f19062 3646# else
9c8a64f0 3647 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE);
65f19062 3648# endif
a3635516 3649#endif
65f19062
GS		 3650
3651#ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
9c8a64f0 3652 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE);
00dc2f4f 3653#endif
65f19062 3654
3b777bb4
GS		 3655#ifdef PERL_OTHERLIBDIRS
3656 incpush(PERL_OTHERLIBDIRS, TRUE, TRUE);
3657#endif
3658
3280af22 3659 if (!PL_tainting)
9c8a64f0 3660 incpush(".", FALSE, FALSE);
bf4acbe4 3661#endif /* MACOS_TRADITIONAL */
774d564b 3662}
3663
ed79a026 3664#if defined(DOSISH) || defined(EPOC)
774d564b 3665# define PERLLIB_SEP ';'
3666#else
3667# if defined(VMS)
3668# define PERLLIB_SEP '|'
3669# else
bf4acbe4
GS		 3670# if defined(MACOS_TRADITIONAL)
3671# define PERLLIB_SEP ','
3672# else
3673# define PERLLIB_SEP ':'
3674# endif
774d564b 3675# endif
3676#endif
3677#ifndef PERLLIB_MANGLE
3678# define PERLLIB_MANGLE(s,n) (s)
ac27b0f5 3679#endif
774d564b 3680
76e3520e 3681STATIC void
9c8a64f0 3682S_incpush(pTHX_ char *p, int addsubdirs, int addoldvers)
774d564b 3683{
3684 SV *subdir = Nullsv;
774d564b 3685
3b290362 3686 if (!p || !*p)
774d564b 3687 return;
3688
9c8a64f0 3689 if (addsubdirs || addoldvers) {
00db4c45 3690 subdir = sv_newmortal();
774d564b 3691 }
3692
3693 /* Break at all separators */
3694 while (p && *p) {
8c52afec 3695 SV *libdir = NEWSV(55,0);
774d564b 3696 char *s;
3697
3698 /* skip any consecutive separators */
3699 while ( *p == PERLLIB_SEP ) {
3700 /* Uncomment the next line for PATH semantics */
79cb57f6 3701 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
774d564b 3702 p++;
3703 }
3704
3705 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
3706 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
3707 (STRLEN)(s - p));
3708 p = s + 1;
3709 }
3710 else {
3711 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
3712 p = Nullch; /* break out */
3713 }
bf4acbe4
GS		 3714#ifdef MACOS_TRADITIONAL
3715 if (!strchr(SvPVX(libdir), ':'))
3716 sv_insert(libdir, 0, 0, ":", 1);
3717 if (SvPVX(libdir)[SvCUR(libdir)-1] != ':')
3718 sv_catpv(libdir, ":");
3719#endif
774d564b 3720
3721 /*
3722 * BEFORE pushing libdir onto @INC we may first push version- and
3723 * archname-specific sub-directories.
3724 */
9c8a64f0 3725 if (addsubdirs || addoldvers) {
29d82f8d 3726#ifdef PERL_INC_VERSION_LIST
8353b874
GS		 3727 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
3728 const char *incverlist[] = { PERL_INC_VERSION_LIST };
29d82f8d
GS		 3729 const char **incver;
3730#endif
774d564b 3731 struct stat tmpstatbuf;
aa689395 3732#ifdef VMS
3733 char *unix;
3734 STRLEN len;
774d564b 3735
2d8e6c8d 3736 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
aa689395 3737 len = strlen(unix);
3738 while (unix[len-1] == '/') len--; /* Cosmetic */
3739 sv_usepvn(libdir,unix,len);
3740 }
3741 else
bf49b057 3742 PerlIO_printf(Perl_error_log,
aa689395 3743 "Failed to unixify @INC element \"%s\"\n",
2d8e6c8d 3744 SvPV(libdir,len));
aa689395 3745#endif
9c8a64f0 3746 if (addsubdirs) {
bf4acbe4
GS		 3747#ifdef MACOS_TRADITIONAL
3748#define PERL_AV_SUFFIX_FMT ""
084592ab
CN		 3749#define PERL_ARCH_FMT "%s:"
3750#define PERL_ARCH_FMT_PATH PERL_FS_VER_FMT PERL_AV_SUFFIX_FMT
bf4acbe4
GS		 3751#else
3752#define PERL_AV_SUFFIX_FMT "/"
3753#define PERL_ARCH_FMT "/%s"
084592ab 3754#define PERL_ARCH_FMT_PATH PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT
bf4acbe4 3755#endif
9c8a64f0 3756 /* .../version/archname if -d .../version/archname */
084592ab 3757 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH PERL_ARCH_FMT,
9c8a64f0
GS		 3758 libdir,
3759 (int)PERL_REVISION, (int)PERL_VERSION,
3760 (int)PERL_SUBVERSION, ARCHNAME);
3761 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3762 S_ISDIR(tmpstatbuf.st_mode))
3763 av_push(GvAVn(PL_incgv), newSVsv(subdir));
4b03c463 3764
9c8a64f0 3765 /* .../version if -d .../version */
084592ab 3766 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH, libdir,
9c8a64f0
GS		 3767 (int)PERL_REVISION, (int)PERL_VERSION,
3768 (int)PERL_SUBVERSION);
3769 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3770 S_ISDIR(tmpstatbuf.st_mode))
3771 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3772
3773 /* .../archname if -d .../archname */
bf4acbe4 3774 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, ARCHNAME);
29d82f8d
GS		 3775 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3776 S_ISDIR(tmpstatbuf.st_mode))
3777 av_push(GvAVn(PL_incgv), newSVsv(subdir));
29d82f8d 3778 }
9c8a64f0 3779
9c8a64f0 3780#ifdef PERL_INC_VERSION_LIST
ccc2aad8 3781 if (addoldvers) {
9c8a64f0
GS		 3782 for (incver = incverlist; *incver; incver++) {
3783 /* .../xxx if -d .../xxx */
bf4acbe4 3784 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, *incver);
9c8a64f0
GS		 3785 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3786 S_ISDIR(tmpstatbuf.st_mode))
3787 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3788 }
3789 }
29d82f8d 3790#endif
774d564b 3791 }
3792
3793 /* finally push this lib directory on the end of @INC */
3280af22 3794 av_push(GvAVn(PL_incgv), libdir);
774d564b 3795 }
34de22dd 3796}
93a17b20 3797
4d1ff10f 3798#ifdef USE_5005THREADS
76e3520e 3799STATIC struct perl_thread *
cea2e8a9 3800S_init_main_thread(pTHX)
199100c8 3801{
c5be433b 3802#if !defined(PERL_IMPLICIT_CONTEXT)
52e1cb5e 3803 struct perl_thread *thr;
cea2e8a9 3804#endif
199100c8
MB		 3805 XPV *xpv;
3806
52e1cb5e 3807 Newz(53, thr, 1, struct perl_thread);
533c011a 3808 PL_curcop = &PL_compiling;
c5be433b 3809 thr->interp = PERL_GET_INTERP;
199100c8 3810 thr->cvcache = newHV();
54b9620d 3811 thr->threadsv = newAV();
940cb80d 3812 /* thr->threadsvp is set when find_threadsv is called */
199100c8
MB		 3813 thr->specific = newAV();
3814 thr->flags = THRf_R_JOINABLE;
3815 MUTEX_INIT(&thr->mutex);
3816 /* Handcraft thrsv similarly to mess_sv */
533c011a 3817 New(53, PL_thrsv, 1, SV);
199100c8 3818 Newz(53, xpv, 1, XPV);
533c011a
NIS		 3819 SvFLAGS(PL_thrsv) = SVt_PV;
3820 SvANY(PL_thrsv) = (void*)xpv;
3821 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
3822 SvPVX(PL_thrsv) = (char*)thr;
3823 SvCUR_set(PL_thrsv, sizeof(thr));
3824 SvLEN_set(PL_thrsv, sizeof(thr));
3825 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
3826 thr->oursv = PL_thrsv;
3827 PL_chopset = " \n-";
3967c732 3828 PL_dumpindent = 4;
533c011a
NIS		 3829
3830 MUTEX_LOCK(&PL_threads_mutex);
3831 PL_nthreads++;
199100c8
MB		 3832 thr->tid = 0;
3833 thr->next = thr;
3834 thr->prev = thr;
8dcd6f7b 3835 thr->thr_done = 0;
533c011a 3836 MUTEX_UNLOCK(&PL_threads_mutex);
199100c8 3837
4b026b9e 3838#ifdef HAVE_THREAD_INTERN
4f63d024 3839 Perl_init_thread_intern(thr);
235db74f
GS		 3840#endif
3841
3842#ifdef SET_THREAD_SELF
3843 SET_THREAD_SELF(thr);
199100c8
MB		 3844#else
3845 thr->self = pthread_self();
235db74f 3846#endif /* SET_THREAD_SELF */
06d86050 3847 PERL_SET_THX(thr);
199100c8
MB		 3848
3849 /*
411caa50
JH		 3850 * These must come after the thread self setting
3851 * because sv_setpvn does SvTAINT and the taint
3852 * fields thread selfness being set.
199100c8 3853 */
533c011a
NIS		 3854 PL_toptarget = NEWSV(0,0);
3855 sv_upgrade(PL_toptarget, SVt_PVFM);
3856 sv_setpvn(PL_toptarget, "", 0);
3857 PL_bodytarget = NEWSV(0,0);
3858 sv_upgrade(PL_bodytarget, SVt_PVFM);
3859 sv_setpvn(PL_bodytarget, "", 0);
3860 PL_formtarget = PL_bodytarget;
79cb57f6 3861 thr->errsv = newSVpvn("", 0);
78857c3c 3862 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
5c0ca799 3863
533c011a 3864 PL_maxscream = -1;
a2efc822 3865 PL_peepp = MEMBER_TO_FPTR(Perl_peep);
0b94c7bb
GS		 3866 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3867 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3868 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3869 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3870 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
533c011a
NIS		 3871 PL_regindent = 0;
3872 PL_reginterp_cnt = 0;
5c0ca799 3873
199100c8
MB		 3874 return thr;
3875}
4d1ff10f 3876#endif /* USE_5005THREADS */
199100c8 3877
93a17b20 3878void
864dbfa3 3879Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
93a17b20 3880{
971a9dd3 3881 SV *atsv;
57843af0 3882 line_t oldline = CopLINE(PL_curcop);
312caa8e 3883 CV *cv;
22921e25 3884 STRLEN len;
6224f72b 3885 int ret;
db36c5a1 3886 dJMPENV;
93a17b20 3887
76e3520e 3888 while (AvFILL(paramList) >= 0) {
312caa8e 3889 cv = (CV*)av_shift(paramList);
aefff11f 3890 if (PL_savebegin && (paramList == PL_beginav)) {
059a8bb7
JH		 3891 /* save PL_beginav for compiler */
3892 if (! PL_beginav_save)
3893 PL_beginav_save = newAV();
3894 av_push(PL_beginav_save, (SV*)cv);
3895 } else {
3896 SAVEFREESV(cv);
3897 }
14dd3ad8
GS		 3898#ifdef PERL_FLEXIBLE_EXCEPTIONS
3899 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_list_body), cv);
3900#else
3901 JMPENV_PUSH(ret);
3902#endif
6224f72b 3903 switch (ret) {
312caa8e 3904 case 0:
14dd3ad8
GS		 3905#ifndef PERL_FLEXIBLE_EXCEPTIONS
3906 call_list_body(cv);
3907#endif
971a9dd3 3908 atsv = ERRSV;
312caa8e
CS		 3909 (void)SvPV(atsv, len);
3910 if (len) {
971a9dd3 3911 STRLEN n_a;
312caa8e 3912 PL_curcop = &PL_compiling;
57843af0 3913 CopLINE_set(PL_curcop, oldline);
312caa8e
CS		 3914 if (paramList == PL_beginav)
3915 sv_catpv(atsv, "BEGIN failed--compilation aborted");
3916 else
4f25aa18
GS		 3917 Perl_sv_catpvf(aTHX_ atsv,
3918 "%s failed--call queue aborted",
7d30b5c4 3919 paramList == PL_checkav ? "CHECK"
4f25aa18
GS		 3920 : paramList == PL_initav ? "INIT"
3921 : "END");
312caa8e
CS		 3922 while (PL_scopestack_ix > oldscope)
3923 LEAVE;
14dd3ad8 3924 JMPENV_POP;
971a9dd3 3925 Perl_croak(aTHX_ "%s", SvPVx(atsv, n_a));
a0d0e21e 3926 }
85e6fe83 3927 break;
6224f72b 3928 case 1:
f86702cc 3929 STATUS_ALL_FAILURE;
85e6fe83 3930 /* FALL THROUGH */
6224f72b 3931 case 2:
85e6fe83 3932 /* my_exit() was called */
3280af22 3933 while (PL_scopestack_ix > oldscope)
2ae324a7 3934 LEAVE;
84902520 3935 FREETMPS;
3280af22 3936 PL_curstash = PL_defstash;
3280af22 3937 PL_curcop = &PL_compiling;
57843af0 3938 CopLINE_set(PL_curcop, oldline);
14dd3ad8 3939 JMPENV_POP;
cc3604b1 3940 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
3280af22 3941 if (paramList == PL_beginav)
cea2e8a9 3942 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
85e6fe83 3943 else
4f25aa18 3944 Perl_croak(aTHX_ "%s failed--call queue aborted",
7d30b5c4 3945 paramList == PL_checkav ? "CHECK"
4f25aa18
GS		 3946 : paramList == PL_initav ? "INIT"
3947 : "END");
85e6fe83 3948 }
f86702cc 3949 my_exit_jump();
85e6fe83 3950 /* NOTREACHED */
6224f72b 3951 case 3:
312caa8e
CS		 3952 if (PL_restartop) {
3953 PL_curcop = &PL_compiling;
57843af0 3954 CopLINE_set(PL_curcop, oldline);
312caa8e 3955 JMPENV_JUMP(3);
85e6fe83 3956 }
bf49b057 3957 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e
CS		 3958 FREETMPS;
3959 break;
8990e307 3960 }
14dd3ad8 3961 JMPENV_POP;
93a17b20 3962 }
93a17b20 3963}
93a17b20 3964
14dd3ad8 3965#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 3966STATIC void *
14dd3ad8 3967S_vcall_list_body(pTHX_ va_list args)
312caa8e 3968{
312caa8e 3969 CV *cv = va_arg(args, CV*);
14dd3ad8
GS		 3970 return call_list_body(cv);
3971}
3972#endif
312caa8e 3973
14dd3ad8
GS		 3974STATIC void *
3975S_call_list_body(pTHX_ CV *cv)
3976{
312caa8e 3977 PUSHMARK(PL_stack_sp);
864dbfa3 3978 call_sv((SV*)cv, G_EVAL|G_DISCARD);
312caa8e
CS		 3979 return NULL;
3980}
3981
f86702cc 3982void
864dbfa3 3983Perl_my_exit(pTHX_ U32 status)
f86702cc 3984{
8b73bbec 3985 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
a863c7d1 3986 thr, (unsigned long) status));
f86702cc 3987 switch (status) {
3988 case 0:
3989 STATUS_ALL_SUCCESS;
3990 break;
3991 case 1:
3992 STATUS_ALL_FAILURE;
3993 break;
3994 default:
3995 STATUS_NATIVE_SET(status);
3996 break;
3997 }
3998 my_exit_jump();
3999}
4000
4001void
864dbfa3 4002Perl_my_failure_exit(pTHX)
f86702cc 4003{
4004#ifdef VMS
4005 if (vaxc$errno & 1) {
4fdae800 4006 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
4007 STATUS_NATIVE_SET(44);
f86702cc 4008 }
4009 else {
ff0cee69 4010 if (!vaxc$errno && errno) /* unlikely */
4fdae800 4011 STATUS_NATIVE_SET(44);
f86702cc 4012 else
4fdae800 4013 STATUS_NATIVE_SET(vaxc$errno);
f86702cc 4014 }
4015#else
9b599b2a 4016 int exitstatus;
f86702cc 4017 if (errno & 255)
4018 STATUS_POSIX_SET(errno);
9b599b2a 4019 else {
ac27b0f5 4020 exitstatus = STATUS_POSIX >> 8;
9b599b2a
GS		 4021 if (exitstatus & 255)
4022 STATUS_POSIX_SET(exitstatus);
4023 else
4024 STATUS_POSIX_SET(255);
4025 }
f86702cc 4026#endif
4027 my_exit_jump();
93a17b20
LW		 4028}
4029
76e3520e 4030STATIC void
cea2e8a9 4031S_my_exit_jump(pTHX)
f86702cc 4032{
c09156bb 4033 register PERL_CONTEXT *cx;
f86702cc 4034 I32 gimme;
4035 SV **newsp;
4036
3280af22
NIS		 4037 if (PL_e_script) {
4038 SvREFCNT_dec(PL_e_script);
4039 PL_e_script = Nullsv;
f86702cc 4040 }
4041
3280af22 4042 POPSTACK_TO(PL_mainstack);
f86702cc 4043 if (cxstack_ix >= 0) {
4044 if (cxstack_ix > 0)
4045 dounwind(0);
3280af22 4046 POPBLOCK(cx,PL_curpm);
f86702cc 4047 LEAVE;
4048 }
ff0cee69 4049
6224f72b 4050 JMPENV_JUMP(2);
f86702cc 4051}
873ef191 4052
0cb96387 4053static I32
acfe0abc 4054read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen)
873ef191
GS		 4055{
4056 char *p, *nl;
3280af22 4057 p = SvPVX(PL_e_script);
873ef191 4058 nl = strchr(p, '\n');
3280af22 4059 nl = (nl) ? nl+1 : SvEND(PL_e_script);
7dfe3f66 4060 if (nl-p == 0) {
0cb96387 4061 filter_del(read_e_script);
873ef191 4062 return 0;
7dfe3f66 4063 }
873ef191 4064 sv_catpvn(buf_sv, p, nl-p);
3280af22 4065 sv_chop(PL_e_script, nl);
873ef191
GS		 4066 return 1;
4067}
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