This is a live mirror of the Perl 5 development currently hosted at https://github.com/perl/perl5
The system() vs $SIG{ARLM} is no more a todo.
[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
PP
26#endif
27
acfe0abc 28static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
0cb96387 29
a687059c
LW
30#ifdef IAMSUID
31#ifndef DOSUID
32#define DOSUID
33#endif
34#endif
378cc40b 35
a687059c
LW
36#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
37#ifdef DOSUID
38#undef DOSUID
39#endif
40#endif
8d063cd8 41
4d1ff10f 42#if defined(USE_5005THREADS)
06d86050
GS
43# define INIT_TLS_AND_INTERP \
44 STMT_START { \
45 if (!PL_curinterp) { \
46 PERL_SET_INTERP(my_perl); \
47 INIT_THREADS; \
48 ALLOC_THREAD_KEY; \
49 } \
50 } STMT_END
51#else
52# if defined(USE_ITHREADS)
53# define INIT_TLS_AND_INTERP \
54 STMT_START { \
55 if (!PL_curinterp) { \
56 PERL_SET_INTERP(my_perl); \
57 INIT_THREADS; \
58 ALLOC_THREAD_KEY; \
534825c4
GS
59 PERL_SET_THX(my_perl); \
60 OP_REFCNT_INIT; \
61 } \
62 else { \
63 PERL_SET_THX(my_perl); \
06d86050 64 } \
06d86050
GS
65 } STMT_END
66# else
67# define INIT_TLS_AND_INTERP \
68 STMT_START { \
69 if (!PL_curinterp) { \
70 PERL_SET_INTERP(my_perl); \
71 } \
72 PERL_SET_THX(my_perl); \
73 } STMT_END
74# endif
75#endif
76
32e30700
GS
77#ifdef PERL_IMPLICIT_SYS
78PerlInterpreter *
7766f137
GS
79perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
80 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
32e30700
GS
81 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
82 struct IPerlDir* ipD, struct IPerlSock* ipS,
83 struct IPerlProc* ipP)
84{
85 PerlInterpreter *my_perl;
32e30700
GS
86 /* New() needs interpreter, so call malloc() instead */
87 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
06d86050 88 INIT_TLS_AND_INTERP;
32e30700
GS
89 Zero(my_perl, 1, PerlInterpreter);
90 PL_Mem = ipM;
7766f137
GS
91 PL_MemShared = ipMS;
92 PL_MemParse = ipMP;
32e30700
GS
93 PL_Env = ipE;
94 PL_StdIO = ipStd;
95 PL_LIO = ipLIO;
96 PL_Dir = ipD;
97 PL_Sock = ipS;
98 PL_Proc = ipP;
7766f137 99
32e30700
GS
100 return my_perl;
101}
102#else
954c1994
GS
103
104/*
105=for apidoc perl_alloc
106
107Allocates a new Perl interpreter. See L<perlembed>.
108
109=cut
110*/
111
93a17b20 112PerlInterpreter *
cea2e8a9 113perl_alloc(void)
79072805 114{
cea2e8a9 115 PerlInterpreter *my_perl;
79072805 116
54aff467 117 /* New() needs interpreter, so call malloc() instead */
e8ee3774 118 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 119
06d86050 120 INIT_TLS_AND_INTERP;
dedcbb81 121 Zero(my_perl, 1, PerlInterpreter);
cea2e8a9 122 return my_perl;
79072805 123}
32e30700 124#endif /* PERL_IMPLICIT_SYS */
79072805 125
954c1994
GS
126/*
127=for apidoc perl_construct
128
129Initializes a new Perl interpreter. See L<perlembed>.
130
131=cut
132*/
133
79072805 134void
0cb96387 135perl_construct(pTHXx)
79072805 136{
4d1ff10f 137#ifdef USE_5005THREADS
a863c7d1 138#ifndef FAKE_THREADS
e1f15930 139 struct perl_thread *thr = NULL;
a863c7d1 140#endif /* FAKE_THREADS */
4d1ff10f 141#endif /* USE_5005THREADS */
ba869deb 142
8990e307 143#ifdef MULTIPLICITY
54aff467 144 init_interp();
ac27b0f5 145 PL_perl_destruct_level = 1;
54aff467
GS
146#else
147 if (PL_perl_destruct_level > 0)
148 init_interp();
149#endif
150
33f46ff6 151 /* Init the real globals (and main thread)? */
3280af22 152 if (!PL_linestr) {
4d1ff10f 153#ifdef USE_5005THREADS
533c011a 154 MUTEX_INIT(&PL_sv_mutex);
a863c7d1
MB
155 /*
156 * Safe to use basic SV functions from now on (though
157 * not things like mortals or tainting yet).
158 */
533c011a
NIS
159 MUTEX_INIT(&PL_eval_mutex);
160 COND_INIT(&PL_eval_cond);
161 MUTEX_INIT(&PL_threads_mutex);
162 COND_INIT(&PL_nthreads_cond);
ba869deb 163# ifdef EMULATE_ATOMIC_REFCOUNTS
533c011a 164 MUTEX_INIT(&PL_svref_mutex);
ba869deb 165# endif /* EMULATE_ATOMIC_REFCOUNTS */
a863c7d1 166
5ff3f7a4 167 MUTEX_INIT(&PL_cred_mutex);
3d35f11b
GS
168 MUTEX_INIT(&PL_sv_lock_mutex);
169 MUTEX_INIT(&PL_fdpid_mutex);
5ff3f7a4 170
199100c8 171 thr = init_main_thread();
4d1ff10f 172#endif /* USE_5005THREADS */
11343788 173
14dd3ad8 174#ifdef PERL_FLEXIBLE_EXCEPTIONS
0b94c7bb 175 PL_protect = MEMBER_TO_FPTR(Perl_default_protect); /* for exceptions */
14dd3ad8 176#endif
312caa8e 177
2aea9f8a
GS
178 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
179
3280af22
NIS
180 PL_linestr = NEWSV(65,79);
181 sv_upgrade(PL_linestr,SVt_PVIV);
79072805 182
3280af22 183 if (!SvREADONLY(&PL_sv_undef)) {
d689ffdd
JP
184 /* set read-only and try to insure than we wont see REFCNT==0
185 very often */
186
3280af22
NIS
187 SvREADONLY_on(&PL_sv_undef);
188 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
79072805 189
3280af22
NIS
190 sv_setpv(&PL_sv_no,PL_No);
191 SvNV(&PL_sv_no);
192 SvREADONLY_on(&PL_sv_no);
193 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
79072805 194
3280af22
NIS
195 sv_setpv(&PL_sv_yes,PL_Yes);
196 SvNV(&PL_sv_yes);
197 SvREADONLY_on(&PL_sv_yes);
198 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
6e72f9df 199 }
79072805 200
cea2e8a9 201 PL_sighandlerp = Perl_sighandler;
3280af22 202 PL_pidstatus = newHV();
44a8e56a 203
79072805
LW
204#ifdef MSDOS
205 /*
206 * There is no way we can refer to them from Perl so close them to save
207 * space. The other alternative would be to provide STDAUX and STDPRN
208 * filehandles.
209 */
2b96b0a5
JH
210 (void)PerlIO_close(PerlIO_importFILE(stdaux, 0));
211 (void)PerlIO_close(PerlIO_importFILE(stdprn, 0));
79072805
LW
212#endif
213 }
214
8bfdd7d9 215 PL_rs = newSVpvn("\n", 1);
dc92893f 216
cea2e8a9 217 init_stacks();
79072805 218
748a9306 219 init_ids();
3280af22 220 PL_lex_state = LEX_NOTPARSING;
a5f75d66 221
312caa8e 222 JMPENV_BOOTSTRAP;
f86702cc
PP
223 STATUS_ALL_SUCCESS;
224
0672f40e 225 init_i18nl10n(1);
36477c24 226 SET_NUMERIC_STANDARD();
0b5b802d 227
a7cb1f99
GS
228 {
229 U8 *s;
230 PL_patchlevel = NEWSV(0,4);
155aba94 231 (void)SvUPGRADE(PL_patchlevel, SVt_PVNV);
a7cb1f99 232 if (PERL_REVISION > 127 || PERL_VERSION > 127 || PERL_SUBVERSION > 127)
806e7201 233 SvGROW(PL_patchlevel, UTF8_MAXLEN*3+1);
a7cb1f99 234 s = (U8*)SvPVX(PL_patchlevel);
9041c2e3
NIS
235 /* Build version strings using "native" characters */
236 s = uvchr_to_utf8(s, (UV)PERL_REVISION);
237 s = uvchr_to_utf8(s, (UV)PERL_VERSION);
238 s = uvchr_to_utf8(s, (UV)PERL_SUBVERSION);
a7cb1f99
GS
239 *s = '\0';
240 SvCUR_set(PL_patchlevel, s - (U8*)SvPVX(PL_patchlevel));
241 SvPOK_on(PL_patchlevel);
242 SvNVX(PL_patchlevel) = (NV)PERL_REVISION
243 + ((NV)PERL_VERSION / (NV)1000)
cceca5ed 244#if defined(PERL_SUBVERSION) && PERL_SUBVERSION > 0
a7cb1f99 245 + ((NV)PERL_SUBVERSION / (NV)1000000)
a5f75d66 246#endif
a7cb1f99
GS
247 ;
248 SvNOK_on(PL_patchlevel); /* dual valued */
249 SvUTF8_on(PL_patchlevel);
250 SvREADONLY_on(PL_patchlevel);
251 }
79072805 252
ab821d7f 253#if defined(LOCAL_PATCH_COUNT)
3280af22 254 PL_localpatches = local_patches; /* For possible -v */
ab821d7f
PP
255#endif
256
52853b95
GS
257#ifdef HAVE_INTERP_INTERN
258 sys_intern_init();
259#endif
260
3a1ee7e8 261 PerlIO_init(aTHX); /* Hook to IO system */
760ac839 262
3280af22
NIS
263 PL_fdpid = newAV(); /* for remembering popen pids by fd */
264 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
24944567 265 PL_errors = newSVpvn("",0);
1fcf4c12 266#ifdef USE_ITHREADS
13137afc
AB
267 PL_regex_padav = newAV();
268 av_push(PL_regex_padav,(SV*)newAV()); /* First entry is an array of empty elements */
269 PL_regex_pad = AvARRAY(PL_regex_padav);
1fcf4c12 270#endif
e5dd39fc
AB
271#ifdef USE_REENTRANT_API
272 New(31337, PL_reentrant_buffer,1, REBUF);
273 New(31337, PL_reentrant_buffer->tmbuff,1, struct tm);
274#endif
3d47000e
AB
275
276 /* Note that strtab is a rather special HV. Assumptions are made
277 about not iterating on it, and not adding tie magic to it.
278 It is properly deallocated in perl_destruct() */
279 PL_strtab = newHV();
280
281#ifdef USE_5005THREADS
282 MUTEX_INIT(&PL_strtab_mutex);
283#endif
284 HvSHAREKEYS_off(PL_strtab); /* mandatory */
285 hv_ksplit(PL_strtab, 512);
286
0631ea03
AB
287#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
288 _dyld_lookup_and_bind
289 ("__environ", (unsigned long *) &environ_pointer, NULL);
290#endif /* environ */
291
292#ifdef USE_ENVIRON_ARRAY
293 PL_origenviron = environ;
294#endif
295
8990e307 296 ENTER;
79072805
LW
297}
298
954c1994
GS
299/*
300=for apidoc perl_destruct
301
302Shuts down a Perl interpreter. See L<perlembed>.
303
304=cut
305*/
306
31d77e54 307int
0cb96387 308perl_destruct(pTHXx)
79072805 309{
7c474504 310 volatile int destruct_level; /* 0=none, 1=full, 2=full with checks */
a0d0e21e 311 HV *hv;
4d1ff10f 312#ifdef USE_5005THREADS
33f46ff6 313 Thread t;
cea2e8a9 314 dTHX;
4d1ff10f 315#endif /* USE_5005THREADS */
8990e307 316
7766f137
GS
317 /* wait for all pseudo-forked children to finish */
318 PERL_WAIT_FOR_CHILDREN;
319
4d1ff10f 320#ifdef USE_5005THREADS
0f15f207 321#ifndef FAKE_THREADS
8023c3ce
MB
322 /* Pass 1 on any remaining threads: detach joinables, join zombies */
323 retry_cleanup:
533c011a 324 MUTEX_LOCK(&PL_threads_mutex);
bf49b057 325 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 326 "perl_destruct: waiting for %d threads...\n",
533c011a 327 PL_nthreads - 1));
33f46ff6 328 for (t = thr->next; t != thr; t = t->next) {
605e5515
MB
329 MUTEX_LOCK(&t->mutex);
330 switch (ThrSTATE(t)) {
331 AV *av;
c7848ba1 332 case THRf_ZOMBIE:
bf49b057 333 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 334 "perl_destruct: joining zombie %p\n", t));
605e5515
MB
335 ThrSETSTATE(t, THRf_DEAD);
336 MUTEX_UNLOCK(&t->mutex);
533c011a 337 PL_nthreads--;
8023c3ce
MB
338 /*
339 * The SvREFCNT_dec below may take a long time (e.g. av
340 * may contain an object scalar whose destructor gets
341 * called) so we have to unlock threads_mutex and start
342 * all over again.
343 */
533c011a 344 MUTEX_UNLOCK(&PL_threads_mutex);
ea0efc06 345 JOIN(t, &av);
605e5515 346 SvREFCNT_dec((SV*)av);
bf49b057 347 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 348 "perl_destruct: joined zombie %p OK\n", t));
8023c3ce 349 goto retry_cleanup;
c7848ba1 350 case THRf_R_JOINABLE:
bf49b057 351 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1
MB
352 "perl_destruct: detaching thread %p\n", t));
353 ThrSETSTATE(t, THRf_R_DETACHED);
ac27b0f5 354 /*
c7848ba1
MB
355 * We unlock threads_mutex and t->mutex in the opposite order
356 * from which we locked them just so that DETACH won't
357 * deadlock if it panics. It's only a breach of good style
358 * not a bug since they are unlocks not locks.
359 */
533c011a 360 MUTEX_UNLOCK(&PL_threads_mutex);
c7848ba1
MB
361 DETACH(t);
362 MUTEX_UNLOCK(&t->mutex);
8023c3ce 363 goto retry_cleanup;
c7848ba1 364 default:
bf49b057 365 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1
MB
366 "perl_destruct: ignoring %p (state %u)\n",
367 t, ThrSTATE(t)));
368 MUTEX_UNLOCK(&t->mutex);
c7848ba1 369 /* fall through and out */
33f46ff6
MB
370 }
371 }
8023c3ce
MB
372 /* We leave the above "Pass 1" loop with threads_mutex still locked */
373
374 /* Pass 2 on remaining threads: wait for the thread count to drop to one */
533c011a 375 while (PL_nthreads > 1)
11343788 376 {
bf49b057 377 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 378 "perl_destruct: final wait for %d threads\n",
533c011a
NIS
379 PL_nthreads - 1));
380 COND_WAIT(&PL_nthreads_cond, &PL_threads_mutex);
11343788
MB
381 }
382 /* At this point, we're the last thread */
533c011a 383 MUTEX_UNLOCK(&PL_threads_mutex);
bf49b057 384 DEBUG_S(PerlIO_printf(Perl_debug_log, "perl_destruct: armageddon has arrived\n"));
533c011a
NIS
385 MUTEX_DESTROY(&PL_threads_mutex);
386 COND_DESTROY(&PL_nthreads_cond);
b57a092c 387 PL_nthreads--;
0f15f207 388#endif /* !defined(FAKE_THREADS) */
4d1ff10f 389#endif /* USE_5005THREADS */
11343788 390
3280af22 391 destruct_level = PL_perl_destruct_level;
4633a7c4
LW
392#ifdef DEBUGGING
393 {
394 char *s;
155aba94 395 if ((s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL"))) {
5f05dabc
PP
396 int i = atoi(s);
397 if (destruct_level < i)
398 destruct_level = i;
399 }
4633a7c4
LW
400 }
401#endif
402
31d77e54
AB
403
404 if(PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB
405 dJMPENV;
406 int x = 0;
407
408 JMPENV_PUSH(x);
409 if (PL_endav && !PL_minus_c)
410 call_list(PL_scopestack_ix, PL_endav);
411 JMPENV_POP;
26f423df 412 }
f3faeb53 413 LEAVE;
a0d0e21e
LW
414 FREETMPS;
415
ff0cee69
PP
416 /* We must account for everything. */
417
418 /* Destroy the main CV and syntax tree */
3280af22
NIS
419 if (PL_main_root) {
420 PL_curpad = AvARRAY(PL_comppad);
421 op_free(PL_main_root);
422 PL_main_root = Nullop;
a0d0e21e 423 }
3280af22
NIS
424 PL_curcop = &PL_compiling;
425 PL_main_start = Nullop;
426 SvREFCNT_dec(PL_main_cv);
427 PL_main_cv = Nullcv;
24d3c518 428 PL_dirty = TRUE;
ff0cee69 429
13621cfb
NIS
430 /* Tell PerlIO we are about to tear things apart in case
431 we have layers which are using resources that should
432 be cleaned up now.
433 */
434
435 PerlIO_destruct(aTHX);
436
3280af22 437 if (PL_sv_objcount) {
a0d0e21e
LW
438 /*
439 * Try to destruct global references. We do this first so that the
440 * destructors and destructees still exist. Some sv's might remain.
441 * Non-referenced objects are on their own.
442 */
a0d0e21e 443 sv_clean_objs();
8990e307
LW
444 }
445
5cd24f17 446 /* unhook hooks which will soon be, or use, destroyed data */
3280af22
NIS
447 SvREFCNT_dec(PL_warnhook);
448 PL_warnhook = Nullsv;
449 SvREFCNT_dec(PL_diehook);
450 PL_diehook = Nullsv;
5cd24f17 451
4b556e6c 452 /* call exit list functions */
3280af22 453 while (PL_exitlistlen-- > 0)
acfe0abc 454 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 455
3280af22 456 Safefree(PL_exitlist);
4b556e6c 457
a0d0e21e 458 if (destruct_level == 0){
8990e307 459
a0d0e21e 460 DEBUG_P(debprofdump());
ac27b0f5 461
56a2bab7
NIS
462#if defined(PERLIO_LAYERS)
463 /* No more IO - including error messages ! */
464 PerlIO_cleanup(aTHX);
465#endif
466
a0d0e21e 467 /* The exit() function will do everything that needs doing. */
31d77e54 468 return STATUS_NATIVE_EXPORT;;
a0d0e21e 469 }
5dd60ef7 470
551a8b83 471 /* jettison our possibly duplicated environment */
4b647fb0
DM
472 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
473 * so we certainly shouldn't free it here
474 */
475#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
551a8b83
JH
476 if (environ != PL_origenviron) {
477 I32 i;
478
479 for (i = 0; environ[i]; i++)
4b420006 480 safesysfree(environ[i]);
0631ea03 481
4b420006
JH
482 /* Must use safesysfree() when working with environ. */
483 safesysfree(environ);
551a8b83
JH
484
485 environ = PL_origenviron;
486 }
487#endif
488
5f8cb046
DM
489#ifdef USE_ITHREADS
490 /* the syntax tree is shared between clones
491 * so op_free(PL_main_root) only ReREFCNT_dec's
492 * REGEXPs in the parent interpreter
493 * we need to manually ReREFCNT_dec for the clones
494 */
495 {
496 I32 i = AvFILLp(PL_regex_padav) + 1;
497 SV **ary = AvARRAY(PL_regex_padav);
498
499 while (i) {
35061a7e 500 SV *resv = ary[--i];
ba89bb6e 501 REGEXP *re = INT2PTR(REGEXP *,SvIVX(resv));
35061a7e
DM
502
503 if (SvFLAGS(resv) & SVf_BREAK) {
577e12cc 504 /* this is PL_reg_curpm, already freed
35061a7e
DM
505 * flag is set in regexec.c:S_regtry
506 */
507 SvFLAGS(resv) &= ~SVf_BREAK;
3a1ee7e8 508 }
1cc8b4c5
AB
509 else if(SvREPADTMP(resv)) {
510 SvREPADTMP_off(resv);
511 }
35061a7e 512 else {
5f8cb046
DM
513 ReREFCNT_dec(re);
514 }
515 }
516 }
517 SvREFCNT_dec(PL_regex_padav);
518 PL_regex_padav = Nullav;
519 PL_regex_pad = NULL;
520#endif
521
5f05dabc
PP
522 /* loosen bonds of global variables */
523
3280af22
NIS
524 if(PL_rsfp) {
525 (void)PerlIO_close(PL_rsfp);
526 PL_rsfp = Nullfp;
8ebc5c01
PP
527 }
528
529 /* Filters for program text */
3280af22
NIS
530 SvREFCNT_dec(PL_rsfp_filters);
531 PL_rsfp_filters = Nullav;
8ebc5c01
PP
532
533 /* switches */
3280af22
NIS
534 PL_preprocess = FALSE;
535 PL_minus_n = FALSE;
536 PL_minus_p = FALSE;
537 PL_minus_l = FALSE;
538 PL_minus_a = FALSE;
539 PL_minus_F = FALSE;
540 PL_doswitches = FALSE;
599cee73 541 PL_dowarn = G_WARN_OFF;
3280af22
NIS
542 PL_doextract = FALSE;
543 PL_sawampersand = FALSE; /* must save all match strings */
3280af22
NIS
544 PL_unsafe = FALSE;
545
546 Safefree(PL_inplace);
547 PL_inplace = Nullch;
a7cb1f99 548 SvREFCNT_dec(PL_patchlevel);
3280af22
NIS
549
550 if (PL_e_script) {
551 SvREFCNT_dec(PL_e_script);
552 PL_e_script = Nullsv;
8ebc5c01
PP
553 }
554
bc0a45ed
DM
555 while (--PL_origargc >= 0) {
556 Safefree(PL_origargv[PL_origargc]);
557 }
558 Safefree(PL_origargv);
559
8ebc5c01
PP
560 /* magical thingies */
561
7889fe52
NIS
562 SvREFCNT_dec(PL_ofs_sv); /* $, */
563 PL_ofs_sv = Nullsv;
5f05dabc 564
7889fe52
NIS
565 SvREFCNT_dec(PL_ors_sv); /* $\ */
566 PL_ors_sv = Nullsv;
8ebc5c01 567
3280af22
NIS
568 SvREFCNT_dec(PL_rs); /* $/ */
569 PL_rs = Nullsv;
dc92893f 570
d33b2eba
GS
571 PL_multiline = 0; /* $* */
572 Safefree(PL_osname); /* $^O */
573 PL_osname = Nullch;
5f05dabc 574
3280af22
NIS
575 SvREFCNT_dec(PL_statname);
576 PL_statname = Nullsv;
577 PL_statgv = Nullgv;
5f05dabc 578
8ebc5c01
PP
579 /* defgv, aka *_ should be taken care of elsewhere */
580
8ebc5c01 581 /* clean up after study() */
3280af22
NIS
582 SvREFCNT_dec(PL_lastscream);
583 PL_lastscream = Nullsv;
584 Safefree(PL_screamfirst);
585 PL_screamfirst = 0;
586 Safefree(PL_screamnext);
587 PL_screamnext = 0;
8ebc5c01 588
7d5ea4e7
GS
589 /* float buffer */
590 Safefree(PL_efloatbuf);
591 PL_efloatbuf = Nullch;
592 PL_efloatsize = 0;
593
8ebc5c01 594 /* startup and shutdown function lists */
3280af22 595 SvREFCNT_dec(PL_beginav);
5a837c8f 596 SvREFCNT_dec(PL_beginav_save);
3280af22 597 SvREFCNT_dec(PL_endav);
7d30b5c4 598 SvREFCNT_dec(PL_checkav);
3280af22
NIS
599 SvREFCNT_dec(PL_initav);
600 PL_beginav = Nullav;
5a837c8f 601 PL_beginav_save = Nullav;
3280af22 602 PL_endav = Nullav;
7d30b5c4 603 PL_checkav = Nullav;
3280af22 604 PL_initav = Nullav;
5618dfe8 605
8ebc5c01 606 /* shortcuts just get cleared */
3280af22 607 PL_envgv = Nullgv;
3280af22
NIS
608 PL_incgv = Nullgv;
609 PL_hintgv = Nullgv;
610 PL_errgv = Nullgv;
611 PL_argvgv = Nullgv;
612 PL_argvoutgv = Nullgv;
613 PL_stdingv = Nullgv;
bf49b057 614 PL_stderrgv = Nullgv;
3280af22
NIS
615 PL_last_in_gv = Nullgv;
616 PL_replgv = Nullgv;
5c831c24 617 PL_debstash = Nullhv;
8ebc5c01
PP
618
619 /* reset so print() ends up where we expect */
620 setdefout(Nullgv);
5c831c24 621
7a1c5554
GS
622 SvREFCNT_dec(PL_argvout_stack);
623 PL_argvout_stack = Nullav;
8ebc5c01 624
5c831c24
GS
625 SvREFCNT_dec(PL_modglobal);
626 PL_modglobal = Nullhv;
627 SvREFCNT_dec(PL_preambleav);
628 PL_preambleav = Nullav;
629 SvREFCNT_dec(PL_subname);
630 PL_subname = Nullsv;
631 SvREFCNT_dec(PL_linestr);
632 PL_linestr = Nullsv;
633 SvREFCNT_dec(PL_pidstatus);
634 PL_pidstatus = Nullhv;
635 SvREFCNT_dec(PL_toptarget);
636 PL_toptarget = Nullsv;
637 SvREFCNT_dec(PL_bodytarget);
638 PL_bodytarget = Nullsv;
639 PL_formtarget = Nullsv;
640
d33b2eba 641 /* free locale stuff */
b9582b6a 642#ifdef USE_LOCALE_COLLATE
d33b2eba
GS
643 Safefree(PL_collation_name);
644 PL_collation_name = Nullch;
b9582b6a 645#endif
d33b2eba 646
b9582b6a 647#ifdef USE_LOCALE_NUMERIC
d33b2eba
GS
648 Safefree(PL_numeric_name);
649 PL_numeric_name = Nullch;
a453c169 650 SvREFCNT_dec(PL_numeric_radix_sv);
b9582b6a 651#endif
d33b2eba 652
5c831c24
GS
653 /* clear utf8 character classes */
654 SvREFCNT_dec(PL_utf8_alnum);
655 SvREFCNT_dec(PL_utf8_alnumc);
656 SvREFCNT_dec(PL_utf8_ascii);
657 SvREFCNT_dec(PL_utf8_alpha);
658 SvREFCNT_dec(PL_utf8_space);
659 SvREFCNT_dec(PL_utf8_cntrl);
660 SvREFCNT_dec(PL_utf8_graph);
661 SvREFCNT_dec(PL_utf8_digit);
662 SvREFCNT_dec(PL_utf8_upper);
663 SvREFCNT_dec(PL_utf8_lower);
664 SvREFCNT_dec(PL_utf8_print);
665 SvREFCNT_dec(PL_utf8_punct);
666 SvREFCNT_dec(PL_utf8_xdigit);
667 SvREFCNT_dec(PL_utf8_mark);
668 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 669 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 670 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 671 SvREFCNT_dec(PL_utf8_tofold);
5c831c24
GS
672 PL_utf8_alnum = Nullsv;
673 PL_utf8_alnumc = Nullsv;
674 PL_utf8_ascii = Nullsv;
675 PL_utf8_alpha = Nullsv;
676 PL_utf8_space = Nullsv;
677 PL_utf8_cntrl = Nullsv;
678 PL_utf8_graph = Nullsv;
679 PL_utf8_digit = Nullsv;
680 PL_utf8_upper = Nullsv;
681 PL_utf8_lower = Nullsv;
682 PL_utf8_print = Nullsv;
683 PL_utf8_punct = Nullsv;
684 PL_utf8_xdigit = Nullsv;
685 PL_utf8_mark = Nullsv;
686 PL_utf8_toupper = Nullsv;
687 PL_utf8_totitle = Nullsv;
688 PL_utf8_tolower = Nullsv;
b4e400f9 689 PL_utf8_tofold = Nullsv;
5c831c24 690
971a9dd3
GS
691 if (!specialWARN(PL_compiling.cop_warnings))
692 SvREFCNT_dec(PL_compiling.cop_warnings);
5c831c24 693 PL_compiling.cop_warnings = Nullsv;
ac27b0f5
NIS
694 if (!specialCopIO(PL_compiling.cop_io))
695 SvREFCNT_dec(PL_compiling.cop_io);
696 PL_compiling.cop_io = Nullsv;
f4dd75d9
GS
697#ifdef USE_ITHREADS
698 Safefree(CopFILE(&PL_compiling));
699 CopFILE(&PL_compiling) = Nullch;
700 Safefree(CopSTASHPV(&PL_compiling));
701#else
01724ea0 702 SvREFCNT_dec(CopFILEGV(&PL_compiling));
f4dd75d9
GS
703 CopFILEGV(&PL_compiling) = Nullgv;
704 /* cop_stash is not refcounted */
01724ea0 705#endif
5c831c24 706
a0d0e21e 707 /* Prepare to destruct main symbol table. */
5f05dabc 708
3280af22
NIS
709 hv = PL_defstash;
710 PL_defstash = 0;
a0d0e21e 711 SvREFCNT_dec(hv);
5c831c24
GS
712 SvREFCNT_dec(PL_curstname);
713 PL_curstname = Nullsv;
a0d0e21e 714
5a844595
GS
715 /* clear queued errors */
716 SvREFCNT_dec(PL_errors);
717 PL_errors = Nullsv;
718
a0d0e21e 719 FREETMPS;
0453d815 720 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
3280af22 721 if (PL_scopestack_ix != 0)
0453d815
PM
722 Perl_warner(aTHX_ WARN_INTERNAL,
723 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
3280af22
NIS
724 (long)PL_scopestack_ix);
725 if (PL_savestack_ix != 0)
0453d815
PM
726 Perl_warner(aTHX_ WARN_INTERNAL,
727 "Unbalanced saves: %ld more saves than restores\n",
3280af22
NIS
728 (long)PL_savestack_ix);
729 if (PL_tmps_floor != -1)
0453d815 730 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced tmps: %ld more allocs than frees\n",
3280af22 731 (long)PL_tmps_floor + 1);
a0d0e21e 732 if (cxstack_ix != -1)
0453d815 733 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced context: %ld more PUSHes than POPs\n",
ff0cee69 734 (long)cxstack_ix + 1);
a0d0e21e 735 }
8990e307
LW
736
737 /* Now absolutely destruct everything, somehow or other, loops or no. */
d33b2eba 738 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
3280af22 739 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
5226ed68
JH
740
741 /* the 2 is for PL_fdpid and PL_strtab */
742 while (PL_sv_count > 2 && sv_clean_all())
743 ;
744
d33b2eba
GS
745 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
746 SvFLAGS(PL_fdpid) |= SVt_PVAV;
3280af22
NIS
747 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
748 SvFLAGS(PL_strtab) |= SVt_PVHV;
d33b2eba 749
d4777f27
GS
750 AvREAL_off(PL_fdpid); /* no surviving entries */
751 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
d33b2eba
GS
752 PL_fdpid = Nullav;
753
6c644e78
GS
754#ifdef HAVE_INTERP_INTERN
755 sys_intern_clear();
756#endif
757
6e72f9df
PP
758 /* Destruct the global string table. */
759 {
760 /* Yell and reset the HeVAL() slots that are still holding refcounts,
761 * so that sv_free() won't fail on them.
762 */
763 I32 riter;
764 I32 max;
765 HE *hent;
766 HE **array;
767
768 riter = 0;
3280af22
NIS
769 max = HvMAX(PL_strtab);
770 array = HvARRAY(PL_strtab);
6e72f9df
PP
771 hent = array[0];
772 for (;;) {
0453d815
PM
773 if (hent && ckWARN_d(WARN_INTERNAL)) {
774 Perl_warner(aTHX_ WARN_INTERNAL,
775 "Unbalanced string table refcount: (%d) for \"%s\"",
6e72f9df
PP
776 HeVAL(hent) - Nullsv, HeKEY(hent));
777 HeVAL(hent) = Nullsv;
778 hent = HeNEXT(hent);
779 }
780 if (!hent) {
781 if (++riter > max)
782 break;
783 hent = array[riter];
784 }
785 }
786 }
3280af22 787 SvREFCNT_dec(PL_strtab);
6e72f9df 788
e652bb2f 789#ifdef USE_ITHREADS
a0739874
DM
790 /* free the pointer table used for cloning */
791 ptr_table_free(PL_ptr_table);
53186e96 792#endif
a0739874 793
d33b2eba
GS
794 /* free special SVs */
795
796 SvREFCNT(&PL_sv_yes) = 0;
797 sv_clear(&PL_sv_yes);
798 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 799 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
800
801 SvREFCNT(&PL_sv_no) = 0;
802 sv_clear(&PL_sv_no);
803 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 804 SvFLAGS(&PL_sv_no) = 0;
01724ea0
GS
805
806 SvREFCNT(&PL_sv_undef) = 0;
807 SvREADONLY_off(&PL_sv_undef);
d33b2eba 808
0453d815
PM
809 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
810 Perl_warner(aTHX_ WARN_INTERNAL,"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 811
56a2bab7 812#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS
813 /* No more IO - including error messages ! */
814 PerlIO_cleanup(aTHX);
815#endif
816
3280af22 817 Safefree(PL_origfilename);
3280af22 818 Safefree(PL_reg_start_tmp);
5c5e4c24
IZ
819 if (PL_reg_curpm)
820 Safefree(PL_reg_curpm);
82ba1be6 821 Safefree(PL_reg_poscache);
3280af22
NIS
822 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
823 Safefree(PL_op_mask);
cf36064f
GS
824 Safefree(PL_psig_ptr);
825 Safefree(PL_psig_name);
2c2666fc 826 Safefree(PL_bitcount);
ce08f86c 827 Safefree(PL_psig_pend);
6e72f9df 828 nuke_stacks();
3280af22 829 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
ac27b0f5 830
a0d0e21e 831 DEBUG_P(debprofdump());
4d1ff10f 832#ifdef USE_5005THREADS
5f08fbcd 833 MUTEX_DESTROY(&PL_strtab_mutex);
533c011a
NIS
834 MUTEX_DESTROY(&PL_sv_mutex);
835 MUTEX_DESTROY(&PL_eval_mutex);
5ff3f7a4 836 MUTEX_DESTROY(&PL_cred_mutex);
3d35f11b 837 MUTEX_DESTROY(&PL_fdpid_mutex);
533c011a 838 COND_DESTROY(&PL_eval_cond);
11d617a5
GS
839#ifdef EMULATE_ATOMIC_REFCOUNTS
840 MUTEX_DESTROY(&PL_svref_mutex);
841#endif /* EMULATE_ATOMIC_REFCOUNTS */
fc36a67e 842
8023c3ce 843 /* As the penultimate thing, free the non-arena SV for thrsv */
533c011a
NIS
844 Safefree(SvPVX(PL_thrsv));
845 Safefree(SvANY(PL_thrsv));
846 Safefree(PL_thrsv);
847 PL_thrsv = Nullsv;
4d1ff10f 848#endif /* USE_5005THREADS */
d33b2eba 849
e5dd39fc
AB
850#ifdef USE_REENTRANT_API
851 Safefree(PL_reentrant_buffer->tmbuff);
852 Safefree(PL_reentrant_buffer);
853#endif
854
612f20c3
GS
855 sv_free_arenas();
856
fc36a67e
PP
857 /* As the absolutely last thing, free the non-arena SV for mess() */
858
3280af22 859 if (PL_mess_sv) {
9c63abab
GS
860 /* it could have accumulated taint magic */
861 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
862 MAGIC* mg;
863 MAGIC* moremagic;
864 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
865 moremagic = mg->mg_moremagic;
14befaf4
DM
866 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
867 && mg->mg_len >= 0)
9c63abab
GS
868 Safefree(mg->mg_ptr);
869 Safefree(mg);
870 }
871 }
fc36a67e 872 /* we know that type >= SVt_PV */
155aba94 873 (void)SvOOK_off(PL_mess_sv);
3280af22
NIS
874 Safefree(SvPVX(PL_mess_sv));
875 Safefree(SvANY(PL_mess_sv));
876 Safefree(PL_mess_sv);
877 PL_mess_sv = Nullsv;
fc36a67e 878 }
31d77e54 879 return STATUS_NATIVE_EXPORT;
79072805
LW
880}
881
954c1994
GS
882/*
883=for apidoc perl_free
884
885Releases a Perl interpreter. See L<perlembed>.
886
887=cut
888*/
889
79072805 890void
0cb96387 891perl_free(pTHXx)
79072805 892{
acfe0abc 893#if defined(WIN32) || defined(NETWARE)
ce3e5b80 894# if defined(PERL_IMPLICIT_SYS)
acfe0abc
GS
895# ifdef NETWARE
896 void *host = nw_internal_host;
897# else
898 void *host = w32_internal_host;
899# endif
ce3e5b80 900 PerlMem_free(aTHXx);
acfe0abc
GS
901# ifdef NETWARE
902 nw5_delete_internal_host(host);
903# else
904 win32_delete_internal_host(host);
905# endif
1c0ca838
GS
906# else
907 PerlMem_free(aTHXx);
908# endif
acfe0abc
GS
909#else
910 PerlMem_free(aTHXx);
76e3520e 911#endif
79072805
LW
912}
913
4b556e6c 914void
864dbfa3 915Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 916{
3280af22
NIS
917 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
918 PL_exitlist[PL_exitlistlen].fn = fn;
919 PL_exitlist[PL_exitlistlen].ptr = ptr;
920 ++PL_exitlistlen;
4b556e6c
JD
921}
922
954c1994
GS
923/*
924=for apidoc perl_parse
925
926Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
927
928=cut
929*/
930
79072805 931int
0cb96387 932perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 933{
6224f72b 934 I32 oldscope;
6224f72b 935 int ret;
db36c5a1 936 dJMPENV;
4d1ff10f 937#ifdef USE_5005THREADS
cea2e8a9
GS
938 dTHX;
939#endif
8d063cd8 940
a687059c
LW
941#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
942#ifdef IAMSUID
943#undef IAMSUID
cea2e8a9 944 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
a687059c
LW
945setuid perl scripts securely.\n");
946#endif
947#endif
948
3280af22 949 PL_origargc = argc;
bc0a45ed
DM
950 {
951 /* we copy rather than point to argv
952 * since perl_clone will copy and perl_destruct
3a1ee7e8 953 * has no way of knowing if we've made a copy or
bc0a45ed
DM
954 * just point to argv
955 */
956 int i = PL_origargc;
957 New(0, PL_origargv, i+1, char*);
958 PL_origargv[i] = '\0';
959 while (i-- > 0) {
960 PL_origargv[i] = savepv(argv[i]);
961 }
962 }
963
0631ea03 964
a0d0e21e 965
3280af22 966 if (PL_do_undump) {
a0d0e21e
LW
967
968 /* Come here if running an undumped a.out. */
969
3280af22
NIS
970 PL_origfilename = savepv(argv[0]);
971 PL_do_undump = FALSE;
a0d0e21e 972 cxstack_ix = -1; /* start label stack again */
748a9306 973 init_ids();
a0d0e21e
LW
974 init_postdump_symbols(argc,argv,env);
975 return 0;
976 }
977
3280af22
NIS
978 if (PL_main_root) {
979 PL_curpad = AvARRAY(PL_comppad);
980 op_free(PL_main_root);
981 PL_main_root = Nullop;
ff0cee69 982 }
3280af22
NIS
983 PL_main_start = Nullop;
984 SvREFCNT_dec(PL_main_cv);
985 PL_main_cv = Nullcv;
79072805 986
3280af22
NIS
987 time(&PL_basetime);
988 oldscope = PL_scopestack_ix;
599cee73 989 PL_dowarn = G_WARN_OFF;
f86702cc 990
14dd3ad8
GS
991#ifdef PERL_FLEXIBLE_EXCEPTIONS
992 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
993#else
994 JMPENV_PUSH(ret);
995#endif
6224f72b 996 switch (ret) {
312caa8e 997 case 0:
14dd3ad8
GS
998#ifndef PERL_FLEXIBLE_EXCEPTIONS
999 parse_body(env,xsinit);
1000#endif
7d30b5c4
GS
1001 if (PL_checkav)
1002 call_list(oldscope, PL_checkav);
14dd3ad8
GS
1003 ret = 0;
1004 break;
6224f72b
GS
1005 case 1:
1006 STATUS_ALL_FAILURE;
1007 /* FALL THROUGH */
1008 case 2:
1009 /* my_exit() was called */
3280af22 1010 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1011 LEAVE;
1012 FREETMPS;
3280af22 1013 PL_curstash = PL_defstash;
7d30b5c4
GS
1014 if (PL_checkav)
1015 call_list(oldscope, PL_checkav);
14dd3ad8
GS
1016 ret = STATUS_NATIVE_EXPORT;
1017 break;
6224f72b 1018 case 3:
bf49b057 1019 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1020 ret = 1;
1021 break;
6224f72b 1022 }
14dd3ad8
GS
1023 JMPENV_POP;
1024 return ret;
1025}
1026
1027#ifdef PERL_FLEXIBLE_EXCEPTIONS
1028STATIC void *
1029S_vparse_body(pTHX_ va_list args)
1030{
1031 char **env = va_arg(args, char**);
1032 XSINIT_t xsinit = va_arg(args, XSINIT_t);
1033
1034 return parse_body(env, xsinit);
312caa8e 1035}
14dd3ad8 1036#endif
312caa8e
CS
1037
1038STATIC void *
14dd3ad8 1039S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1040{
312caa8e
CS
1041 int argc = PL_origargc;
1042 char **argv = PL_origargv;
312caa8e
CS
1043 char *scriptname = NULL;
1044 int fdscript = -1;
1045 VOL bool dosearch = FALSE;
1046 char *validarg = "";
1047 AV* comppadlist;
1048 register SV *sv;
1049 register char *s;
cf756827 1050 char *cddir = Nullch;
312caa8e 1051
3280af22 1052 sv_setpvn(PL_linestr,"",0);
79cb57f6 1053 sv = newSVpvn("",0); /* first used for -I flags */
6224f72b
GS
1054 SAVEFREESV(sv);
1055 init_main_stash();
54310121 1056
6224f72b
GS
1057 for (argc--,argv++; argc > 0; argc--,argv++) {
1058 if (argv[0][0] != '-' || !argv[0][1])
1059 break;
1060#ifdef DOSUID
1061 if (*validarg)
1062 validarg = " PHOOEY ";
1063 else
1064 validarg = argv[0];
13281fa4 1065#endif
6224f72b
GS
1066 s = argv[0]+1;
1067 reswitch:
1068 switch (*s) {
729a02f2
GS
1069 case 'C':
1070#ifdef WIN32
c0932edc 1071 win32_argv2utf8(argc-1, argv+1);
729a02f2
GS
1072 /* FALL THROUGH */
1073#endif
1d5472a9
GS
1074#ifndef PERL_STRICT_CR
1075 case '\r':
1076#endif
6224f72b
GS
1077 case ' ':
1078 case '0':
1079 case 'F':
1080 case 'a':
1081 case 'c':
1082 case 'd':
1083 case 'D':
1084 case 'h':
1085 case 'i':
1086 case 'l':
1087 case 'M':
1088 case 'm':
1089 case 'n':
1090 case 'p':
1091 case 's':
1092 case 'u':
1093 case 'U':
1094 case 'v':
599cee73
PM
1095 case 'W':
1096 case 'X':
6224f72b 1097 case 'w':
155aba94 1098 if ((s = moreswitches(s)))
6224f72b
GS
1099 goto reswitch;
1100 break;
33b78306 1101
6537fe72
MS
1102 case 't':
1103 PL_taint_warn = TRUE;
6224f72b 1104 case 'T':
3280af22 1105 PL_tainting = TRUE;
6224f72b
GS
1106 s++;
1107 goto reswitch;
f86702cc 1108
6224f72b 1109 case 'e':
bf4acbe4
GS
1110#ifdef MACOS_TRADITIONAL
1111 /* ignore -e for Dev:Pseudo argument */
1112 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
ac27b0f5 1113 break;
bf4acbe4 1114#endif
3280af22 1115 if (PL_euid != PL_uid || PL_egid != PL_gid)
cea2e8a9 1116 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
3280af22 1117 if (!PL_e_script) {
79cb57f6 1118 PL_e_script = newSVpvn("",0);
0cb96387 1119 filter_add(read_e_script, NULL);
6224f72b
GS
1120 }
1121 if (*++s)
3280af22 1122 sv_catpv(PL_e_script, s);
6224f72b 1123 else if (argv[1]) {
3280af22 1124 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1125 argc--,argv++;
1126 }
1127 else
cea2e8a9 1128 Perl_croak(aTHX_ "No code specified for -e");
3280af22 1129 sv_catpv(PL_e_script, "\n");
6224f72b 1130 break;
afe37c7d 1131
6224f72b
GS
1132 case 'I': /* -I handled both here and in moreswitches() */
1133 forbid_setid("-I");
1134 if (!*++s && (s=argv[1]) != Nullch) {
1135 argc--,argv++;
1136 }
6224f72b 1137 if (s && *s) {
0df16ed7
GS
1138 char *p;
1139 STRLEN len = strlen(s);
1140 p = savepvn(s, len);
9c8a64f0 1141 incpush(p, TRUE, TRUE);
0df16ed7
GS
1142 sv_catpvn(sv, "-I", 2);
1143 sv_catpvn(sv, p, len);
1144 sv_catpvn(sv, " ", 1);
6224f72b 1145 Safefree(p);
0df16ed7
GS
1146 }
1147 else
a67e862a 1148 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b
GS
1149 break;
1150 case 'P':
1151 forbid_setid("-P");
3280af22 1152 PL_preprocess = TRUE;
6224f72b
GS
1153 s++;
1154 goto reswitch;
1155 case 'S':
1156 forbid_setid("-S");
1157 dosearch = TRUE;
1158 s++;
1159 goto reswitch;
1160 case 'V':
3280af22
NIS
1161 if (!PL_preambleav)
1162 PL_preambleav = newAV();
1163 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
6224f72b 1164 if (*++s != ':') {
3280af22 1165 PL_Sv = newSVpv("print myconfig();",0);
6224f72b 1166#ifdef VMS
6b88bc9c 1167 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
6224f72b 1168#else
3280af22 1169 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
6224f72b 1170#endif
3280af22 1171 sv_catpv(PL_Sv,"\" Compile-time options:");
6224f72b 1172# ifdef DEBUGGING
3280af22 1173 sv_catpv(PL_Sv," DEBUGGING");
6224f72b 1174# endif
6224f72b 1175# ifdef MULTIPLICITY
8f872242 1176 sv_catpv(PL_Sv," MULTIPLICITY");
6224f72b 1177# endif
4d1ff10f
AB
1178# ifdef USE_5005THREADS
1179 sv_catpv(PL_Sv," USE_5005THREADS");
b363f7ed 1180# endif
ac5e8965
JH
1181# ifdef USE_ITHREADS
1182 sv_catpv(PL_Sv," USE_ITHREADS");
1183# endif
10cc9d2a
JH
1184# ifdef USE_64_BIT_INT
1185 sv_catpv(PL_Sv," USE_64_BIT_INT");
1186# endif
1187# ifdef USE_64_BIT_ALL
1188 sv_catpv(PL_Sv," USE_64_BIT_ALL");
ac5e8965
JH
1189# endif
1190# ifdef USE_LONG_DOUBLE
1191 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1192# endif
53430762
JH
1193# ifdef USE_LARGE_FILES
1194 sv_catpv(PL_Sv," USE_LARGE_FILES");
1195# endif
ac5e8965
JH
1196# ifdef USE_SOCKS
1197 sv_catpv(PL_Sv," USE_SOCKS");
1198# endif
b363f7ed
GS
1199# ifdef PERL_IMPLICIT_CONTEXT
1200 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1201# endif
1202# ifdef PERL_IMPLICIT_SYS
1203 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1204# endif
3280af22 1205 sv_catpv(PL_Sv,"\\n\",");
b363f7ed 1206
6224f72b
GS
1207#if defined(LOCAL_PATCH_COUNT)
1208 if (LOCAL_PATCH_COUNT > 0) {
1209 int i;
3280af22 1210 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
6224f72b 1211 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
3280af22 1212 if (PL_localpatches[i])
cea2e8a9 1213 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
6224f72b
GS
1214 }
1215 }
1216#endif
cea2e8a9 1217 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
6224f72b
GS
1218#ifdef __DATE__
1219# ifdef __TIME__
cea2e8a9 1220 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
6224f72b 1221# else
cea2e8a9 1222 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
6224f72b
GS
1223# endif
1224#endif
3280af22 1225 sv_catpv(PL_Sv, "; \
6224f72b 1226$\"=\"\\n \"; \
69fcd688
JH
1227@env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; ");
1228#ifdef __CYGWIN__
1229 sv_catpv(PL_Sv,"\
1230push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
1231#endif
1232 sv_catpv(PL_Sv, "\
6224f72b
GS
1233print \" \\%ENV:\\n @env\\n\" if @env; \
1234print \" \\@INC:\\n @INC\\n\";");
1235 }
1236 else {
3280af22
NIS
1237 PL_Sv = newSVpv("config_vars(qw(",0);
1238 sv_catpv(PL_Sv, ++s);
1239 sv_catpv(PL_Sv, "))");
6224f72b
GS
1240 s += strlen(s);
1241 }
3280af22 1242 av_push(PL_preambleav, PL_Sv);
6224f72b
GS
1243 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1244 goto reswitch;
1245 case 'x':
3280af22 1246 PL_doextract = TRUE;
6224f72b
GS
1247 s++;
1248 if (*s)
f4c556ac 1249 cddir = s;
6224f72b
GS
1250 break;
1251 case 0:
1252 break;
1253 case '-':
1254 if (!*++s || isSPACE(*s)) {
1255 argc--,argv++;
1256 goto switch_end;
1257 }
1258 /* catch use of gnu style long options */
1259 if (strEQ(s, "version")) {
1260 s = "v";
1261 goto reswitch;
1262 }
1263 if (strEQ(s, "help")) {
1264 s = "h";
1265 goto reswitch;
1266 }
1267 s--;
1268 /* FALL THROUGH */
1269 default:
cea2e8a9 1270 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
1271 }
1272 }
6224f72b 1273 switch_end:
54310121 1274
f675dbe5
CB
1275 if (
1276#ifndef SECURE_INTERNAL_GETENV
1277 !PL_tainting &&
1278#endif
cf756827 1279 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1280 {
cf756827 1281 char *popt = s;
74288ac8
GS
1282 while (isSPACE(*s))
1283 s++;
1284 if (*s == '-' && *(s+1) == 'T')
1285 PL_tainting = TRUE;
1286 else {
cf756827 1287 char *popt_copy = Nullch;
74288ac8 1288 while (s && *s) {
4ea8f8fb 1289 char *d;
74288ac8
GS
1290 while (isSPACE(*s))
1291 s++;
1292 if (*s == '-') {
1293 s++;
1294 if (isSPACE(*s))
1295 continue;
1296 }
4ea8f8fb 1297 d = s;
74288ac8
GS
1298 if (!*s)
1299 break;
1300 if (!strchr("DIMUdmw", *s))
cea2e8a9 1301 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
1302 while (++s && *s) {
1303 if (isSPACE(*s)) {
cf756827
GS
1304 if (!popt_copy) {
1305 popt_copy = SvPVX(sv_2mortal(newSVpv(popt,0)));
1306 s = popt_copy + (s - popt);
1307 d = popt_copy + (d - popt);
1308 }
4ea8f8fb
MS
1309 *s++ = '\0';
1310 break;
1311 }
1312 }
1313 moreswitches(d);
6224f72b 1314 }
6224f72b
GS
1315 }
1316 }
a0d0e21e 1317
6224f72b
GS
1318 if (!scriptname)
1319 scriptname = argv[0];
3280af22 1320 if (PL_e_script) {
6224f72b
GS
1321 argc++,argv--;
1322 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1323 }
1324 else if (scriptname == Nullch) {
1325#ifdef MSDOS
1326 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1327 moreswitches("h");
1328#endif
1329 scriptname = "-";
1330 }
1331
1332 init_perllib();
1333
1334 open_script(scriptname,dosearch,sv,&fdscript);
1335
1336 validate_suid(validarg, scriptname,fdscript);
1337
64ca3a65 1338#ifndef PERL_MICRO
0b5b802d
GS
1339#if defined(SIGCHLD) || defined(SIGCLD)
1340 {
1341#ifndef SIGCHLD
1342# define SIGCHLD SIGCLD
1343#endif
1344 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1345 if (sigstate == SIG_IGN) {
1346 if (ckWARN(WARN_SIGNAL))
1347 Perl_warner(aTHX_ WARN_SIGNAL,
1348 "Can't ignore signal CHLD, forcing to default");
1349 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1350 }
1351 }
1352#endif
64ca3a65 1353#endif
0b5b802d 1354
bf4acbe4
GS
1355#ifdef MACOS_TRADITIONAL
1356 if (PL_doextract || gMacPerl_AlwaysExtract) {
1357#else
f4c556ac 1358 if (PL_doextract) {
bf4acbe4 1359#endif
6224f72b 1360 find_beginning();
f4c556ac
GS
1361 if (cddir && PerlDir_chdir(cddir) < 0)
1362 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1363
1364 }
6224f72b 1365
3280af22
NIS
1366 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1367 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1368 CvUNIQUE_on(PL_compcv);
1369
1370 PL_comppad = newAV();
1371 av_push(PL_comppad, Nullsv);
1372 PL_curpad = AvARRAY(PL_comppad);
1373 PL_comppad_name = newAV();
1374 PL_comppad_name_fill = 0;
1375 PL_min_intro_pending = 0;
1376 PL_padix = 0;
4d1ff10f 1377#ifdef USE_5005THREADS
79cb57f6 1378 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
533c011a
NIS
1379 PL_curpad[0] = (SV*)newAV();
1380 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1381 CvOWNER(PL_compcv) = 0;
1382 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1383 MUTEX_INIT(CvMUTEXP(PL_compcv));
4d1ff10f 1384#endif /* USE_5005THREADS */
6224f72b
GS
1385
1386 comppadlist = newAV();
1387 AvREAL_off(comppadlist);
3280af22
NIS
1388 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1389 av_store(comppadlist, 1, (SV*)PL_comppad);
1390 CvPADLIST(PL_compcv) = comppadlist;
6224f72b 1391
0c4f7ff0 1392 boot_core_PerlIO();
6224f72b 1393 boot_core_UNIVERSAL();
9a34ef1d 1394#ifndef PERL_MICRO
09bef843 1395 boot_core_xsutils();
9a34ef1d 1396#endif
6224f72b
GS
1397
1398 if (xsinit)
acfe0abc 1399 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 1400#ifndef PERL_MICRO
ed79a026 1401#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
c5be433b 1402 init_os_extras();
6224f72b 1403#endif
64ca3a65 1404#endif
6224f72b 1405
29209bc5 1406#ifdef USE_SOCKS
1b9c9cf5
DH
1407# ifdef HAS_SOCKS5_INIT
1408 socks5_init(argv[0]);
1409# else
29209bc5 1410 SOCKSinit(argv[0]);
1b9c9cf5 1411# endif
ac27b0f5 1412#endif
29209bc5 1413
6224f72b
GS
1414 init_predump_symbols();
1415 /* init_postdump_symbols not currently designed to be called */
1416 /* more than once (ENV isn't cleared first, for example) */
1417 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 1418 if (!PL_do_undump)
6224f72b
GS
1419 init_postdump_symbols(argc,argv,env);
1420
1421 init_lexer();
1422
1423 /* now parse the script */
1424
91487cfc 1425 SETERRNO(0,SS$_NORMAL);
3280af22 1426 PL_error_count = 0;
bf4acbe4
GS
1427#ifdef MACOS_TRADITIONAL
1428 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1429 if (PL_minus_c)
1430 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1431 else {
1432 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1433 MacPerl_MPWFileName(PL_origfilename));
1434 }
1435 }
1436#else
3280af22
NIS
1437 if (yyparse() || PL_error_count) {
1438 if (PL_minus_c)
cea2e8a9 1439 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 1440 else {
cea2e8a9 1441 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 1442 PL_origfilename);
6224f72b
GS
1443 }
1444 }
bf4acbe4 1445#endif
57843af0 1446 CopLINE_set(PL_curcop, 0);
3280af22
NIS
1447 PL_curstash = PL_defstash;
1448 PL_preprocess = FALSE;
1449 if (PL_e_script) {
1450 SvREFCNT_dec(PL_e_script);
1451 PL_e_script = Nullsv;
6224f72b
GS
1452 }
1453
8bfdd7d9
HS
1454/*
1455 Not sure that this is still the right place to do this now that we
1456 no longer use PL_nrs. HVDS 2001/09/09
1457*/
864dbfa3 1458 sv_setsv(get_sv("/", TRUE), PL_rs);
8bfdd7d9 1459
3280af22 1460 if (PL_do_undump)
6224f72b
GS
1461 my_unexec();
1462
57843af0
GS
1463 if (isWARN_ONCE) {
1464 SAVECOPFILE(PL_curcop);
1465 SAVECOPLINE(PL_curcop);
3280af22 1466 gv_check(PL_defstash);
57843af0 1467 }
6224f72b
GS
1468
1469 LEAVE;
1470 FREETMPS;
1471
1472#ifdef MYMALLOC
1473 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1474 dump_mstats("after compilation:");
1475#endif
1476
1477 ENTER;
3280af22 1478 PL_restartop = 0;
312caa8e 1479 return NULL;
6224f72b
GS
1480}
1481
954c1994
GS
1482/*
1483=for apidoc perl_run
1484
1485Tells a Perl interpreter to run. See L<perlembed>.
1486
1487=cut
1488*/
1489
6224f72b 1490int
0cb96387 1491perl_run(pTHXx)
6224f72b 1492{
6224f72b 1493 I32 oldscope;
14dd3ad8 1494 int ret = 0;
db36c5a1 1495 dJMPENV;
4d1ff10f 1496#ifdef USE_5005THREADS
cea2e8a9
GS
1497 dTHX;
1498#endif
6224f72b 1499
3280af22 1500 oldscope = PL_scopestack_ix;
96e176bf
CL
1501#ifdef VMS
1502 VMSISH_HUSHED = 0;
1503#endif
6224f72b 1504
14dd3ad8 1505#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1506 redo_body:
14dd3ad8
GS
1507 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1508#else
1509 JMPENV_PUSH(ret);
1510#endif
6224f72b
GS
1511 switch (ret) {
1512 case 1:
1513 cxstack_ix = -1; /* start context stack again */
312caa8e 1514 goto redo_body;
14dd3ad8
GS
1515 case 0: /* normal completion */
1516#ifndef PERL_FLEXIBLE_EXCEPTIONS
1517 redo_body:
1518 run_body(oldscope);
1519#endif
1520 /* FALL THROUGH */
1521 case 2: /* my_exit() */
3280af22 1522 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1523 LEAVE;
1524 FREETMPS;
3280af22 1525 PL_curstash = PL_defstash;
3a1ee7e8 1526 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
31d77e54
AB
1527 PL_endav && !PL_minus_c)
1528 call_list(oldscope, PL_endav);
6224f72b
GS
1529#ifdef MYMALLOC
1530 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1531 dump_mstats("after execution: ");
1532#endif
14dd3ad8
GS
1533 ret = STATUS_NATIVE_EXPORT;
1534 break;
6224f72b 1535 case 3:
312caa8e
CS
1536 if (PL_restartop) {
1537 POPSTACK_TO(PL_mainstack);
1538 goto redo_body;
6224f72b 1539 }
bf49b057 1540 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 1541 FREETMPS;
14dd3ad8
GS
1542 ret = 1;
1543 break;
6224f72b
GS
1544 }
1545
14dd3ad8
GS
1546 JMPENV_POP;
1547 return ret;
312caa8e
CS
1548}
1549
14dd3ad8 1550#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1551STATIC void *
14dd3ad8 1552S_vrun_body(pTHX_ va_list args)
312caa8e 1553{
312caa8e
CS
1554 I32 oldscope = va_arg(args, I32);
1555
14dd3ad8
GS
1556 return run_body(oldscope);
1557}
1558#endif
1559
1560
1561STATIC void *
1562S_run_body(pTHX_ I32 oldscope)
1563{
6224f72b 1564 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 1565 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 1566
3280af22 1567 if (!PL_restartop) {
6224f72b
GS
1568 DEBUG_x(dump_all());
1569 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
b900a521
JH
1570 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1571 PTR2UV(thr)));
6224f72b 1572
3280af22 1573 if (PL_minus_c) {
bf4acbe4 1574#ifdef MACOS_TRADITIONAL
be708cc0 1575 PerlIO_printf(Perl_error_log, "# %s syntax OK\n", MacPerl_MPWFileName(PL_origfilename));
bf4acbe4 1576#else
bf49b057 1577 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
bf4acbe4 1578#endif
6224f72b
GS
1579 my_exit(0);
1580 }
3280af22 1581 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 1582 sv_setiv(PL_DBsingle, 1);
3280af22
NIS
1583 if (PL_initav)
1584 call_list(oldscope, PL_initav);
6224f72b
GS
1585 }
1586
1587 /* do it */
1588
3280af22 1589 if (PL_restartop) {
533c011a 1590 PL_op = PL_restartop;
3280af22 1591 PL_restartop = 0;
cea2e8a9 1592 CALLRUNOPS(aTHX);
6224f72b 1593 }
3280af22
NIS
1594 else if (PL_main_start) {
1595 CvDEPTH(PL_main_cv) = 1;
533c011a 1596 PL_op = PL_main_start;
cea2e8a9 1597 CALLRUNOPS(aTHX);
6224f72b
GS
1598 }
1599
f6b3007c
JH
1600 my_exit(0);
1601 /* NOTREACHED */
312caa8e 1602 return NULL;
6224f72b
GS
1603}
1604
954c1994
GS
1605/*
1606=for apidoc p||get_sv
1607
1608Returns the SV of the specified Perl scalar. If C<create> is set and the
1609Perl variable does not exist then it will be created. If C<create> is not
1610set and the variable does not exist then NULL is returned.
1611
1612=cut
1613*/
1614
6224f72b 1615SV*
864dbfa3 1616Perl_get_sv(pTHX_ const char *name, I32 create)
6224f72b
GS
1617{
1618 GV *gv;
4d1ff10f 1619#ifdef USE_5005THREADS
6224f72b
GS
1620 if (name[1] == '\0' && !isALPHA(name[0])) {
1621 PADOFFSET tmp = find_threadsv(name);
411caa50 1622 if (tmp != NOT_IN_PAD)
6224f72b 1623 return THREADSV(tmp);
6224f72b 1624 }
4d1ff10f 1625#endif /* USE_5005THREADS */
6224f72b
GS
1626 gv = gv_fetchpv(name, create, SVt_PV);
1627 if (gv)
1628 return GvSV(gv);
1629 return Nullsv;
1630}
1631
954c1994
GS
1632/*
1633=for apidoc p||get_av
1634
1635Returns the AV of the specified Perl array. If C<create> is set and the
1636Perl variable does not exist then it will be created. If C<create> is not
1637set and the variable does not exist then NULL is returned.
1638
1639=cut
1640*/
1641
6224f72b 1642AV*
864dbfa3 1643Perl_get_av(pTHX_ const char *name, I32 create)
6224f72b
GS
1644{
1645 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1646 if (create)
1647 return GvAVn(gv);
1648 if (gv)
1649 return GvAV(gv);
1650 return Nullav;
1651}
1652
954c1994
GS
1653/*
1654=for apidoc p||get_hv
1655
1656Returns the HV of the specified Perl hash. If C<create> is set and the
1657Perl variable does not exist then it will be created. If C<create> is not
1658set and the variable does not exist then NULL is returned.
1659
1660=cut
1661*/
1662
6224f72b 1663HV*
864dbfa3 1664Perl_get_hv(pTHX_ const char *name, I32 create)
6224f72b 1665{
a0d0e21e
LW
1666 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1667 if (create)
1668 return GvHVn(gv);
1669 if (gv)
1670 return GvHV(gv);
1671 return Nullhv;
1672}
1673
954c1994
GS
1674/*
1675=for apidoc p||get_cv
1676
1677Returns the CV of the specified Perl subroutine. If C<create> is set and
1678the Perl subroutine does not exist then it will be declared (which has the
1679same effect as saying C<sub name;>). If C<create> is not set and the
1680subroutine does not exist then NULL is returned.
1681
1682=cut
1683*/
1684
a0d0e21e 1685CV*
864dbfa3 1686Perl_get_cv(pTHX_ const char *name, I32 create)
a0d0e21e
LW
1687{
1688 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
b099ddc0 1689 /* XXX unsafe for threads if eval_owner isn't held */
f6ec51f7
GS
1690 /* XXX this is probably not what they think they're getting.
1691 * It has the same effect as "sub name;", i.e. just a forward
1692 * declaration! */
8ebc5c01 1693 if (create && !GvCVu(gv))
774d564b 1694 return newSUB(start_subparse(FALSE, 0),
a0d0e21e 1695 newSVOP(OP_CONST, 0, newSVpv(name,0)),
4633a7c4 1696 Nullop,
a0d0e21e
LW
1697 Nullop);
1698 if (gv)
8ebc5c01 1699 return GvCVu(gv);
a0d0e21e
LW
1700 return Nullcv;
1701}
1702
79072805
LW
1703/* Be sure to refetch the stack pointer after calling these routines. */
1704
954c1994
GS
1705/*
1706=for apidoc p||call_argv
1707
1708Performs a callback to the specified Perl sub. See L<perlcall>.
1709
1710=cut
1711*/
1712
a0d0e21e 1713I32
864dbfa3 1714Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 1715
8ac85365
NIS
1716 /* See G_* flags in cop.h */
1717 /* null terminated arg list */
8990e307 1718{
a0d0e21e 1719 dSP;
8990e307 1720
924508f0 1721 PUSHMARK(SP);
a0d0e21e 1722 if (argv) {
8990e307 1723 while (*argv) {
a0d0e21e 1724 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
8990e307
LW
1725 argv++;
1726 }
a0d0e21e 1727 PUTBACK;
8990e307 1728 }
864dbfa3 1729 return call_pv(sub_name, flags);
8990e307
LW
1730}
1731
954c1994
GS
1732/*
1733=for apidoc p||call_pv
1734
1735Performs a callback to the specified Perl sub. See L<perlcall>.
1736
1737=cut
1738*/
1739
a0d0e21e 1740I32
864dbfa3 1741Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
1742 /* name of the subroutine */
1743 /* See G_* flags in cop.h */
a0d0e21e 1744{
864dbfa3 1745 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
a0d0e21e
LW
1746}
1747
954c1994
GS
1748/*
1749=for apidoc p||call_method
1750
1751Performs a callback to the specified Perl method. The blessed object must
1752be on the stack. See L<perlcall>.
1753
1754=cut
1755*/
1756
a0d0e21e 1757I32
864dbfa3 1758Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
1759 /* name of the subroutine */
1760 /* See G_* flags in cop.h */
a0d0e21e 1761{
968b3946 1762 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
a0d0e21e
LW
1763}
1764
1765/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
1766/*
1767=for apidoc p||call_sv
1768
1769Performs a callback to the Perl sub whose name is in the SV. See
1770L<perlcall>.
1771
1772=cut
1773*/
1774
a0d0e21e 1775I32
864dbfa3 1776Perl_call_sv(pTHX_ SV *sv, I32 flags)
8ac85365 1777 /* See G_* flags in cop.h */
a0d0e21e 1778{
924508f0 1779 dSP;
a0d0e21e 1780 LOGOP myop; /* fake syntax tree node */
968b3946 1781 UNOP method_op;
aa689395 1782 I32 oldmark;
13689cfe 1783 volatile I32 retval = 0;
a0d0e21e 1784 I32 oldscope;
54310121 1785 bool oldcatch = CATCH_GET;
6224f72b 1786 int ret;
533c011a 1787 OP* oldop = PL_op;
db36c5a1 1788 dJMPENV;
1e422769 1789
a0d0e21e
LW
1790 if (flags & G_DISCARD) {
1791 ENTER;
1792 SAVETMPS;
1793 }
1794
aa689395 1795 Zero(&myop, 1, LOGOP);
54310121 1796 myop.op_next = Nullop;
f51d4af5 1797 if (!(flags & G_NOARGS))
aa689395 1798 myop.op_flags |= OPf_STACKED;
54310121
PP
1799 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1800 (flags & G_ARRAY) ? OPf_WANT_LIST :
1801 OPf_WANT_SCALAR);
462e5cf6 1802 SAVEOP();
533c011a 1803 PL_op = (OP*)&myop;
aa689395 1804
3280af22
NIS
1805 EXTEND(PL_stack_sp, 1);
1806 *++PL_stack_sp = sv;
aa689395 1807 oldmark = TOPMARK;
3280af22 1808 oldscope = PL_scopestack_ix;
a0d0e21e 1809
3280af22 1810 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 1811 /* Handle first BEGIN of -d. */
3280af22 1812 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
1813 /* Try harder, since this may have been a sighandler, thus
1814 * curstash may be meaningless. */
3280af22 1815 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
491527d0 1816 && !(flags & G_NODEBUG))
533c011a 1817 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 1818
968b3946
GS
1819 if (flags & G_METHOD) {
1820 Zero(&method_op, 1, UNOP);
1821 method_op.op_next = PL_op;
1822 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1823 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
f39d0b86 1824 PL_op = (OP*)&method_op;
968b3946
GS
1825 }
1826
312caa8e 1827 if (!(flags & G_EVAL)) {
0cdb2077 1828 CATCH_SET(TRUE);
14dd3ad8 1829 call_body((OP*)&myop, FALSE);
312caa8e 1830 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 1831 CATCH_SET(oldcatch);
312caa8e
CS
1832 }
1833 else {
d78bda3d 1834 myop.op_other = (OP*)&myop;
3280af22 1835 PL_markstack_ptr--;
4633a7c4
LW
1836 /* we're trying to emulate pp_entertry() here */
1837 {
c09156bb 1838 register PERL_CONTEXT *cx;
54310121 1839 I32 gimme = GIMME_V;
ac27b0f5 1840
4633a7c4
LW
1841 ENTER;
1842 SAVETMPS;
ac27b0f5 1843
968b3946 1844 push_return(Nullop);
1d76a5c3 1845 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
4633a7c4 1846 PUSHEVAL(cx, 0, 0);
533c011a 1847 PL_eval_root = PL_op; /* Only needed so that goto works right. */
ac27b0f5 1848
faef0170 1849 PL_in_eval = EVAL_INEVAL;
4633a7c4 1850 if (flags & G_KEEPERR)
faef0170 1851 PL_in_eval |= EVAL_KEEPERR;
4633a7c4 1852 else
38a03e6e 1853 sv_setpv(ERRSV,"");
4633a7c4 1854 }
3280af22 1855 PL_markstack_ptr++;
a0d0e21e 1856
14dd3ad8
GS
1857#ifdef PERL_FLEXIBLE_EXCEPTIONS
1858 redo_body:
1859 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
db36c5a1 1860 (OP*)&myop, FALSE);
14dd3ad8
GS
1861#else
1862 JMPENV_PUSH(ret);
1863#endif
6224f72b
GS
1864 switch (ret) {
1865 case 0:
14dd3ad8
GS
1866#ifndef PERL_FLEXIBLE_EXCEPTIONS
1867 redo_body:
1868 call_body((OP*)&myop, FALSE);
1869#endif
312caa8e
CS
1870 retval = PL_stack_sp - (PL_stack_base + oldmark);
1871 if (!(flags & G_KEEPERR))
1872 sv_setpv(ERRSV,"");
a0d0e21e 1873 break;
6224f72b 1874 case 1:
f86702cc 1875 STATUS_ALL_FAILURE;
a0d0e21e 1876 /* FALL THROUGH */
6224f72b 1877 case 2:
a0d0e21e 1878 /* my_exit() was called */
3280af22 1879 PL_curstash = PL_defstash;
a0d0e21e 1880 FREETMPS;
14dd3ad8 1881 JMPENV_POP;
cc3604b1 1882 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 1883 Perl_croak(aTHX_ "Callback called exit");
f86702cc 1884 my_exit_jump();
a0d0e21e 1885 /* NOTREACHED */
6224f72b 1886 case 3:
3280af22 1887 if (PL_restartop) {
533c011a 1888 PL_op = PL_restartop;
3280af22 1889 PL_restartop = 0;
312caa8e 1890 goto redo_body;
a0d0e21e 1891 }
3280af22 1892 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
1893 if (flags & G_ARRAY)
1894 retval = 0;
1895 else {
1896 retval = 1;
3280af22 1897 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 1898 }
312caa8e 1899 break;
a0d0e21e 1900 }
a0d0e21e 1901
3280af22 1902 if (PL_scopestack_ix > oldscope) {
a0a2876f
LW
1903 SV **newsp;
1904 PMOP *newpm;
1905 I32 gimme;
c09156bb 1906 register PERL_CONTEXT *cx;
a0a2876f
LW
1907 I32 optype;
1908
1909 POPBLOCK(cx,newpm);
1910 POPEVAL(cx);
1911 pop_return();
3280af22 1912 PL_curpm = newpm;
a0a2876f 1913 LEAVE;
a0d0e21e 1914 }
14dd3ad8 1915 JMPENV_POP;
a0d0e21e 1916 }
1e422769 1917
a0d0e21e 1918 if (flags & G_DISCARD) {
3280af22 1919 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
1920 retval = 0;
1921 FREETMPS;
1922 LEAVE;
1923 }
533c011a 1924 PL_op = oldop;
a0d0e21e
LW
1925 return retval;
1926}
1927
14dd3ad8 1928#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1929STATIC void *
14dd3ad8 1930S_vcall_body(pTHX_ va_list args)
312caa8e
CS
1931{
1932 OP *myop = va_arg(args, OP*);
1933 int is_eval = va_arg(args, int);
1934
14dd3ad8 1935 call_body(myop, is_eval);
312caa8e
CS
1936 return NULL;
1937}
14dd3ad8 1938#endif
312caa8e
CS
1939
1940STATIC void
14dd3ad8 1941S_call_body(pTHX_ OP *myop, int is_eval)
312caa8e 1942{
312caa8e
CS
1943 if (PL_op == myop) {
1944 if (is_eval)
f807eda9 1945 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
312caa8e 1946 else
f807eda9 1947 PL_op = Perl_pp_entersub(aTHX); /* this does */
312caa8e
CS
1948 }
1949 if (PL_op)
cea2e8a9 1950 CALLRUNOPS(aTHX);
312caa8e
CS
1951}
1952
6e72f9df 1953/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 1954
954c1994
GS
1955/*
1956=for apidoc p||eval_sv
1957
1958Tells Perl to C<eval> the string in the SV.
1959
1960=cut
1961*/
1962
a0d0e21e 1963I32
864dbfa3 1964Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 1965
8ac85365 1966 /* See G_* flags in cop.h */
a0d0e21e 1967{
924508f0 1968 dSP;
a0d0e21e 1969 UNOP myop; /* fake syntax tree node */
8fa7f367 1970 volatile I32 oldmark = SP - PL_stack_base;
13689cfe 1971 volatile I32 retval = 0;
4633a7c4 1972 I32 oldscope;
6224f72b 1973 int ret;
533c011a 1974 OP* oldop = PL_op;
db36c5a1 1975 dJMPENV;
84902520 1976
4633a7c4
LW
1977 if (flags & G_DISCARD) {
1978 ENTER;
1979 SAVETMPS;
1980 }
1981
462e5cf6 1982 SAVEOP();
533c011a
NIS
1983 PL_op = (OP*)&myop;
1984 Zero(PL_op, 1, UNOP);
3280af22
NIS
1985 EXTEND(PL_stack_sp, 1);
1986 *++PL_stack_sp = sv;
1987 oldscope = PL_scopestack_ix;
79072805 1988
4633a7c4
LW
1989 if (!(flags & G_NOARGS))
1990 myop.op_flags = OPf_STACKED;
79072805 1991 myop.op_next = Nullop;
6e72f9df 1992 myop.op_type = OP_ENTEREVAL;
54310121
PP
1993 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1994 (flags & G_ARRAY) ? OPf_WANT_LIST :
1995 OPf_WANT_SCALAR);
6e72f9df
PP
1996 if (flags & G_KEEPERR)
1997 myop.op_flags |= OPf_SPECIAL;
4633a7c4 1998
14dd3ad8 1999#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 2000 redo_body:
14dd3ad8 2001 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
db36c5a1 2002 (OP*)&myop, TRUE);
14dd3ad8
GS
2003#else
2004 JMPENV_PUSH(ret);
2005#endif
6224f72b
GS
2006 switch (ret) {
2007 case 0:
14dd3ad8
GS
2008#ifndef PERL_FLEXIBLE_EXCEPTIONS
2009 redo_body:
2010 call_body((OP*)&myop,TRUE);
2011#endif
312caa8e
CS
2012 retval = PL_stack_sp - (PL_stack_base + oldmark);
2013 if (!(flags & G_KEEPERR))
2014 sv_setpv(ERRSV,"");
4633a7c4 2015 break;
6224f72b 2016 case 1:
f86702cc 2017 STATUS_ALL_FAILURE;
4633a7c4 2018 /* FALL THROUGH */
6224f72b 2019 case 2:
4633a7c4 2020 /* my_exit() was called */
3280af22 2021 PL_curstash = PL_defstash;
4633a7c4 2022 FREETMPS;
14dd3ad8 2023 JMPENV_POP;
cc3604b1 2024 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2025 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2026 my_exit_jump();
4633a7c4 2027 /* NOTREACHED */
6224f72b 2028 case 3:
3280af22 2029 if (PL_restartop) {
533c011a 2030 PL_op = PL_restartop;
3280af22 2031 PL_restartop = 0;
312caa8e 2032 goto redo_body;
4633a7c4 2033 }
3280af22 2034 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2035 if (flags & G_ARRAY)
2036 retval = 0;
2037 else {
2038 retval = 1;
3280af22 2039 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2040 }
312caa8e 2041 break;
4633a7c4
LW
2042 }
2043
14dd3ad8 2044 JMPENV_POP;
4633a7c4 2045 if (flags & G_DISCARD) {
3280af22 2046 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2047 retval = 0;
2048 FREETMPS;
2049 LEAVE;
2050 }
533c011a 2051 PL_op = oldop;
4633a7c4
LW
2052 return retval;
2053}
2054
954c1994
GS
2055/*
2056=for apidoc p||eval_pv
2057
2058Tells Perl to C<eval> the given string and return an SV* result.
2059
2060=cut
2061*/
2062
137443ea 2063SV*
864dbfa3 2064Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea
PP
2065{
2066 dSP;
2067 SV* sv = newSVpv(p, 0);
2068
864dbfa3 2069 eval_sv(sv, G_SCALAR);
137443ea
PP
2070 SvREFCNT_dec(sv);
2071
2072 SPAGAIN;
2073 sv = POPs;
2074 PUTBACK;
2075
2d8e6c8d
GS
2076 if (croak_on_error && SvTRUE(ERRSV)) {
2077 STRLEN n_a;
cea2e8a9 2078 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
2d8e6c8d 2079 }
137443ea
PP
2080
2081 return sv;
2082}
2083
4633a7c4
LW
2084/* Require a module. */
2085
954c1994
GS
2086/*
2087=for apidoc p||require_pv
2088
7d3fb230
BS
2089Tells Perl to C<require> the file named by the string argument. It is
2090analogous to the Perl code C<eval "require '$file'">. It's even
2091implemented that way; consider using Perl_load_module instead.
954c1994 2092
7d3fb230 2093=cut */
954c1994 2094
4633a7c4 2095void
864dbfa3 2096Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2097{
d3acc0f7
JP
2098 SV* sv;
2099 dSP;
e788e7d3 2100 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7
JP
2101 PUTBACK;
2102 sv = sv_newmortal();
4633a7c4
LW
2103 sv_setpv(sv, "require '");
2104 sv_catpv(sv, pv);
2105 sv_catpv(sv, "'");
864dbfa3 2106 eval_sv(sv, G_DISCARD);
d3acc0f7
JP
2107 SPAGAIN;
2108 POPSTACK;
79072805
LW
2109}
2110
79072805 2111void
864dbfa3 2112Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
79072805
LW
2113{
2114 register GV *gv;
2115
155aba94 2116 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
14befaf4 2117 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
79072805
LW
2118}
2119
76e3520e 2120STATIC void
cea2e8a9 2121S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
4633a7c4 2122{
ab821d7f 2123 /* This message really ought to be max 23 lines.
75c72d73 2124 * Removed -h because the user already knows that option. Others? */
fb73857a 2125
76e3520e 2126 static char *usage_msg[] = {
fb73857a
PP
2127"-0[octal] specify record separator (\\0, if no argument)",
2128"-a autosplit mode with -n or -p (splits $_ into @F)",
46487f74 2129"-C enable native wide character system interfaces",
1950ee41 2130"-c check syntax only (runs BEGIN and CHECK blocks)",
aac3bd0d
GS
2131"-d[:debugger] run program under debugger",
2132"-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2133"-e 'command' one line of program (several -e's allowed, omit programfile)",
2134"-F/pattern/ split() pattern for -a switch (//'s are optional)",
2135"-i[extension] edit <> files in place (makes backup if extension supplied)",
2136"-Idirectory specify @INC/#include directory (several -I's allowed)",
fb73857a 2137"-l[octal] enable line ending processing, specifies line terminator",
aac3bd0d
GS
2138"-[mM][-]module execute `use/no module...' before executing program",
2139"-n assume 'while (<>) { ... }' loop around program",
2140"-p assume loop like -n but print line also, like sed",
2141"-P run program through C preprocessor before compilation",
2142"-s enable rudimentary parsing for switches after programfile",
2143"-S look for programfile using PATH environment variable",
2144"-T enable tainting checks",
2145"-u dump core after parsing program",
fb73857a 2146"-U allow unsafe operations",
aac3bd0d
GS
2147"-v print version, subversion (includes VERY IMPORTANT perl info)",
2148"-V[:variable] print configuration summary (or a single Config.pm variable)",
2149"-w enable many useful warnings (RECOMMENDED)",
3c0facb2
GS
2150"-W enable all warnings",
2151"-X disable all warnings",
fb73857a
PP
2152"-x[directory] strip off text before #!perl line and perhaps cd to directory",
2153"\n",
2154NULL
2155};
76e3520e 2156 char **p = usage_msg;
fb73857a 2157
b0e47665
GS
2158 PerlIO_printf(PerlIO_stdout(),
2159 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2160 name);
fb73857a 2161 while (*p)
b0e47665 2162 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
4633a7c4
LW
2163}
2164
79072805
LW
2165/* This routine handles any switches that can be given during run */
2166
2167char *
864dbfa3 2168Perl_moreswitches(pTHX_ char *s)
79072805 2169{
ba210ebe 2170 STRLEN numlen;
c07a80fd 2171 U32 rschar;
79072805
LW
2172
2173 switch (*s) {
2174 case '0':
a863c7d1 2175 {
53305cf1
NC
2176 I32 flags = 0;
2177 numlen = 4;
2178 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
8bfdd7d9 2179 SvREFCNT_dec(PL_rs);
c07a80fd 2180 if (rschar & ~((U8)~0))
8bfdd7d9 2181 PL_rs = &PL_sv_undef;
c07a80fd 2182 else if (!rschar && numlen >= 2)
8bfdd7d9 2183 PL_rs = newSVpvn("", 0);
c07a80fd
PP
2184 else {
2185 char ch = rschar;
8bfdd7d9 2186 PL_rs = newSVpvn(&ch, 1);
79072805
LW
2187 }
2188 return s + numlen;
a863c7d1 2189 }
46487f74
GS
2190 case 'C':
2191 PL_widesyscalls = TRUE;
2192 s++;
2193 return s;
2304df62 2194 case 'F':
3280af22 2195 PL_minus_F = TRUE;
ebce5377
RGS
2196 PL_splitstr = ++s;
2197 while (*s && !isSPACE(*s)) ++s;
2198 *s = '\0';
2199 PL_splitstr = savepv(PL_splitstr);
2304df62 2200 return s;
79072805 2201 case 'a':
3280af22 2202 PL_minus_a = TRUE;
79072805
LW
2203 s++;
2204 return s;
2205 case 'c':
3280af22 2206 PL_minus_c = TRUE;
79072805
LW
2207 s++;
2208 return s;
2209 case 'd':
bbce6d69 2210 forbid_setid("-d");
4633a7c4 2211 s++;
70c94a19
RR
2212 /* The following permits -d:Mod to accepts arguments following an =
2213 in the fashion that -MSome::Mod does. */
2214 if (*s == ':' || *s == '=') {
2215 char *start;
2216 SV *sv;
2217 sv = newSVpv("use Devel::", 0);
2218 start = ++s;
2219 /* We now allow -d:Module=Foo,Bar */
2220 while(isALNUM(*s) || *s==':') ++s;
2221 if (*s != '=')
2222 sv_catpv(sv, start);
2223 else {
2224 sv_catpvn(sv, start, s-start);
2225 sv_catpv(sv, " split(/,/,q{");
2226 sv_catpv(sv, ++s);
2227 sv_catpv(sv, "})");
2228 }
4633a7c4 2229 s += strlen(s);
70c94a19 2230 my_setenv("PERL5DB", SvPV(sv, PL_na));
4633a7c4 2231 }
ed094faf 2232 if (!PL_perldb) {
3280af22 2233 PL_perldb = PERLDB_ALL;
a0d0e21e 2234 init_debugger();
ed094faf 2235 }
79072805
LW
2236 return s;
2237 case 'D':
0453d815 2238 {
79072805 2239#ifdef DEBUGGING
bbce6d69 2240 forbid_setid("-D");
79072805 2241 if (isALPHA(s[1])) {
04932ac8
DM
2242 /* if adding extra options, remember to update DEBUG_MASK */
2243 static char debopts[] = "psltocPmfrxuLHXDSTR";
79072805
LW
2244 char *d;
2245
93a17b20 2246 for (s++; *s && (d = strchr(debopts,*s)); s++)
3280af22 2247 PL_debug |= 1 << (d - debopts);
79072805
LW
2248 }
2249 else {
3280af22 2250 PL_debug = atoi(s+1);
79072805
LW
2251 for (s++; isDIGIT(*s); s++) ;
2252 }
aea4f609 2253 PL_debug |= DEBUG_TOP_FLAG;
79072805 2254#else
0453d815
PM
2255 if (ckWARN_d(WARN_DEBUGGING))
2256 Perl_warner(aTHX_ WARN_DEBUGGING,
2257 "Recompile perl with -DDEBUGGING to use -D switch\n");
a0d0e21e 2258 for (s++; isALNUM(*s); s++) ;
79072805
LW
2259#endif
2260 /*SUPPRESS 530*/
2261 return s;
0453d815 2262 }
4633a7c4 2263 case 'h':
ac27b0f5 2264 usage(PL_origargv[0]);
6ad3d225 2265 PerlProc_exit(0);
79072805 2266 case 'i':
3280af22
NIS
2267 if (PL_inplace)
2268 Safefree(PL_inplace);
2269 PL_inplace = savepv(s+1);
79072805 2270 /*SUPPRESS 530*/
3280af22 2271 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
7b8d334a 2272 if (*s) {
fb73857a 2273 *s++ = '\0';
7b8d334a
GS
2274 if (*s == '-') /* Additional switches on #! line. */
2275 s++;
2276 }
fb73857a 2277 return s;
4e49a025 2278 case 'I': /* -I handled both here and in parse_body() */
bbce6d69 2279 forbid_setid("-I");
fb73857a
PP
2280 ++s;
2281 while (*s && isSPACE(*s))
2282 ++s;
2283 if (*s) {
774d564b 2284 char *e, *p;
0df16ed7
GS
2285 p = s;
2286 /* ignore trailing spaces (possibly followed by other switches) */
2287 do {
2288 for (e = p; *e && !isSPACE(*e); e++) ;
2289 p = e;
2290 while (isSPACE(*p))
2291 p++;
2292 } while (*p && *p != '-');
2293 e = savepvn(s, e-s);
9c8a64f0 2294 incpush(e, TRUE, TRUE);
0df16ed7
GS
2295 Safefree(e);
2296 s = p;
2297 if (*s == '-')
2298 s++;
79072805
LW
2299 }
2300 else
a67e862a 2301 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 2302 return s;
79072805 2303 case 'l':
3280af22 2304 PL_minus_l = TRUE;
79072805 2305 s++;
7889fe52
NIS
2306 if (PL_ors_sv) {
2307 SvREFCNT_dec(PL_ors_sv);
2308 PL_ors_sv = Nullsv;
2309 }
79072805 2310 if (isDIGIT(*s)) {
53305cf1 2311 I32 flags = 0;
7889fe52 2312 PL_ors_sv = newSVpvn("\n",1);
53305cf1
NC
2313 numlen = 3 + (*s == '0');
2314 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
2315 s += numlen;
2316 }
2317 else {
8bfdd7d9 2318 if (RsPARA(PL_rs)) {
7889fe52
NIS
2319 PL_ors_sv = newSVpvn("\n\n",2);
2320 }
2321 else {
8bfdd7d9 2322 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 2323 }
79072805
LW
2324 }
2325 return s;
1a30305b 2326 case 'M':
bbce6d69 2327 forbid_setid("-M"); /* XXX ? */
1a30305b
PP
2328 /* FALL THROUGH */
2329 case 'm':
bbce6d69 2330 forbid_setid("-m"); /* XXX ? */
1a30305b 2331 if (*++s) {
a5f75d66 2332 char *start;
11343788 2333 SV *sv;
a5f75d66
AD
2334 char *use = "use ";
2335 /* -M-foo == 'no foo' */
2336 if (*s == '-') { use = "no "; ++s; }
11343788 2337 sv = newSVpv(use,0);
a5f75d66 2338 start = s;
1a30305b 2339 /* We allow -M'Module qw(Foo Bar)' */
c07a80fd
PP
2340 while(isALNUM(*s) || *s==':') ++s;
2341 if (*s != '=') {
11343788 2342 sv_catpv(sv, start);
c07a80fd
PP
2343 if (*(start-1) == 'm') {
2344 if (*s != '\0')
cea2e8a9 2345 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
11343788 2346 sv_catpv( sv, " ()");
c07a80fd
PP
2347 }
2348 } else {
6df41af2 2349 if (s == start)
be98fb35
GS
2350 Perl_croak(aTHX_ "Module name required with -%c option",
2351 s[-1]);
11343788
MB
2352 sv_catpvn(sv, start, s-start);
2353 sv_catpv(sv, " split(/,/,q{");
2354 sv_catpv(sv, ++s);
2355 sv_catpv(sv, "})");
c07a80fd 2356 }
1a30305b 2357 s += strlen(s);
5c831c24 2358 if (!PL_preambleav)
3280af22
NIS
2359 PL_preambleav = newAV();
2360 av_push(PL_preambleav, sv);
1a30305b
PP
2361 }
2362 else
cea2e8a9 2363 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
1a30305b 2364 return s;
79072805 2365 case 'n':
3280af22 2366 PL_minus_n = TRUE;
79072805
LW
2367 s++;
2368 return s;
2369 case 'p':
3280af22 2370 PL_minus_p = TRUE;
79072805
LW
2371 s++;
2372 return s;
2373 case 's':
bbce6d69 2374 forbid_setid("-s");
3280af22 2375 PL_doswitches = TRUE;
79072805
LW
2376 s++;
2377 return s;
6537fe72
MS
2378 case 't':
2379 if (!PL_tainting)
2380 Perl_croak(aTHX_ "Too late for \"-t\" option");
2381 s++;
2382 return s;
463ee0b2 2383 case 'T':
3280af22 2384 if (!PL_tainting)
cea2e8a9 2385 Perl_croak(aTHX_ "Too late for \"-T\" option");
463ee0b2
LW
2386 s++;
2387 return s;
79072805 2388 case 'u':
bf4acbe4
GS
2389#ifdef MACOS_TRADITIONAL
2390 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2391#endif
3280af22 2392 PL_do_undump = TRUE;
79072805
LW
2393 s++;
2394 return s;
2395 case 'U':
3280af22 2396 PL_unsafe = TRUE;
79072805
LW
2397 s++;
2398 return s;
2399 case 'v':
8e9464f1 2400#if !defined(DGUX)
b0e47665 2401 PerlIO_printf(PerlIO_stdout(),
d2560b70 2402 Perl_form(aTHX_ "\nThis is perl, v%"VDf" built for %s",
b0e47665 2403 PL_patchlevel, ARCHNAME));
8e9464f1
JH
2404#else /* DGUX */
2405/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
2406 PerlIO_printf(PerlIO_stdout(),
2407 Perl_form(aTHX_ "\nThis is perl, version %vd\n", PL_patchlevel));
2408 PerlIO_printf(PerlIO_stdout(),
2409 Perl_form(aTHX_ " built under %s at %s %s\n",
2410 OSNAME, __DATE__, __TIME__));
2411 PerlIO_printf(PerlIO_stdout(),
2412 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 2413 OSVERS));
8e9464f1
JH
2414#endif /* !DGUX */
2415
fb73857a
PP
2416#if defined(LOCAL_PATCH_COUNT)
2417 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS
2418 PerlIO_printf(PerlIO_stdout(),
2419 "\n(with %d registered patch%s, "
2420 "see perl -V for more detail)",
2421 (int)LOCAL_PATCH_COUNT,
2422 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 2423#endif
1a30305b 2424
b0e47665 2425 PerlIO_printf(PerlIO_stdout(),
bc89e66f 2426 "\n\nCopyright 1987-2001, Larry Wall\n");
eae9c151
JH
2427#ifdef MACOS_TRADITIONAL
2428 PerlIO_printf(PerlIO_stdout(),
03765510
JH
2429 "\nMac OS port Copyright 1991-2001, Matthias Neeracher;\n"
2430 "maintained by Chris Nandor\n");
eae9c151 2431#endif
79072805 2432#ifdef MSDOS
b0e47665
GS
2433 PerlIO_printf(PerlIO_stdout(),
2434 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff
PP
2435#endif
2436#ifdef DJGPP
b0e47665
GS
2437 PerlIO_printf(PerlIO_stdout(),
2438 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2439 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 2440#endif
79072805 2441#ifdef OS2
b0e47665
GS
2442 PerlIO_printf(PerlIO_stdout(),
2443 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2444 "Version 5 port Copyright (c) 1994-1999, Andreas Kaiser, Ilya Zakharevich\n");
79072805 2445#endif
79072805 2446#ifdef atarist
b0e47665
GS
2447 PerlIO_printf(PerlIO_stdout(),
2448 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 2449#endif
a3f9223b 2450#ifdef __BEOS__
b0e47665
GS
2451 PerlIO_printf(PerlIO_stdout(),
2452 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 2453#endif
1d84e8df 2454#ifdef MPE
b0e47665 2455 PerlIO_printf(PerlIO_stdout(),
dc22e1c4 2456 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2001\n");
1d84e8df 2457#endif
9d116dd7 2458#ifdef OEMVS
b0e47665
GS
2459 PerlIO_printf(PerlIO_stdout(),
2460 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 2461#endif
495c5fdc 2462#ifdef __VOS__
b0e47665
GS
2463 PerlIO_printf(PerlIO_stdout(),
2464 "Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n");
495c5fdc 2465#endif
092bebab 2466#ifdef __OPEN_VM
b0e47665
GS
2467 PerlIO_printf(PerlIO_stdout(),
2468 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 2469#endif
a1a0e61e 2470#ifdef POSIX_BC
b0e47665
GS
2471 PerlIO_printf(PerlIO_stdout(),
2472 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 2473#endif
61ae2fbf 2474#ifdef __MINT__
b0e47665
GS
2475 PerlIO_printf(PerlIO_stdout(),
2476 "MiNT port by Guido Flohr, 1997-1999\n");
61ae2fbf 2477#endif
f83d2536 2478#ifdef EPOC
b0e47665
GS
2479 PerlIO_printf(PerlIO_stdout(),
2480 "EPOC port by Olaf Flebbe, 1999-2000\n");
f83d2536 2481#endif
e1caacb4
JH
2482#ifdef UNDER_CE
2483 printf("WINCE port by Rainer Keuchel, 2001\n");
2484 printf("Built on " __DATE__ " " __TIME__ "\n\n");
2485 wce_hitreturn();
2486#endif
baed7233
DL
2487#ifdef BINARY_BUILD_NOTICE
2488 BINARY_BUILD_NOTICE;
2489#endif
b0e47665
GS
2490 PerlIO_printf(PerlIO_stdout(),
2491 "\n\
79072805 2492Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 2493GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687
GS
2494Complete documentation for Perl, including FAQ lists, should be found on\n\
2495this system using `man perl' or `perldoc perl'. If you have access to the\n\
2496Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
6ad3d225 2497 PerlProc_exit(0);
79072805 2498 case 'w':
599cee73 2499 if (! (PL_dowarn & G_WARN_ALL_MASK))
ac27b0f5 2500 PL_dowarn |= G_WARN_ON;
599cee73
PM
2501 s++;
2502 return s;
2503 case 'W':
ac27b0f5 2504 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
d3a7d8c7 2505 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM
2506 s++;
2507 return s;
2508 case 'X':
ac27b0f5 2509 PL_dowarn = G_WARN_ALL_OFF;
d3a7d8c7 2510 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW
2511 s++;
2512 return s;
a0d0e21e 2513 case '*':
79072805
LW
2514 case ' ':
2515 if (s[1] == '-') /* Additional switches on #! line. */
2516 return s+2;
2517 break;
a0d0e21e 2518 case '-':
79072805 2519 case 0:
51882d45 2520#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS
2521 case '\r':
2522#endif
79072805
LW
2523 case '\n':
2524 case '\t':
2525 break;
aa689395
PP
2526#ifdef ALTERNATE_SHEBANG
2527 case 'S': /* OS/2 needs -S on "extproc" line. */
2528 break;
2529#endif
a0d0e21e 2530 case 'P':
3280af22 2531 if (PL_preprocess)
a0d0e21e
LW
2532 return s+1;
2533 /* FALL THROUGH */
79072805 2534 default:
cea2e8a9 2535 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805
LW
2536 }
2537 return Nullch;
2538}
2539
2540/* compliments of Tom Christiansen */
2541
2542/* unexec() can be found in the Gnu emacs distribution */
ee580363 2543/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW
2544
2545void
864dbfa3 2546Perl_my_unexec(pTHX)
79072805
LW
2547{
2548#ifdef UNEXEC
46fc3d4c
PP
2549 SV* prog;
2550 SV* file;
ee580363 2551 int status = 1;
79072805
LW
2552 extern int etext;
2553
ee580363 2554 prog = newSVpv(BIN_EXP, 0);
46fc3d4c 2555 sv_catpv(prog, "/perl");
6b88bc9c 2556 file = newSVpv(PL_origfilename, 0);
46fc3d4c 2557 sv_catpv(file, ".perldump");
79072805 2558
ee580363
GS
2559 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2560 /* unexec prints msg to stderr in case of failure */
6ad3d225 2561 PerlProc_exit(status);
79072805 2562#else
a5f75d66
AD
2563# ifdef VMS
2564# include <lib$routines.h>
2565 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
aa689395 2566# else
79072805 2567 ABORT(); /* for use with undump */
aa689395 2568# endif
a5f75d66 2569#endif
79072805
LW
2570}
2571
cb68f92d
GS
2572/* initialize curinterp */
2573STATIC void
cea2e8a9 2574S_init_interp(pTHX)
cb68f92d
GS
2575{
2576
acfe0abc
GS
2577#ifdef MULTIPLICITY
2578# define PERLVAR(var,type)
2579# define PERLVARA(var,n,type)
2580# if defined(PERL_IMPLICIT_CONTEXT)
2581# if defined(USE_5005THREADS)
2582# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
c5be433b 2583# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
acfe0abc
GS
2584# else /* !USE_5005THREADS */
2585# define PERLVARI(var,type,init) aTHX->var = init;
2586# define PERLVARIC(var,type,init) aTHX->var = init;
2587# endif /* USE_5005THREADS */
3967c732 2588# else
acfe0abc
GS
2589# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2590# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
066ef5b5 2591# endif
acfe0abc
GS
2592# include "intrpvar.h"
2593# ifndef USE_5005THREADS
2594# include "thrdvar.h"
2595# endif
2596# undef PERLVAR
2597# undef PERLVARA
2598# undef PERLVARI
2599# undef PERLVARIC
2600#else
2601# define PERLVAR(var,type)
2602# define PERLVARA(var,n,type)
2603# define PERLVARI(var,type,init) PL_##var = init;
2604# define PERLVARIC(var,type,init) PL_##var = init;
2605# include "intrpvar.h"
2606# ifndef USE_5005THREADS
2607# include "thrdvar.h"
2608# endif
2609# undef PERLVAR
2610# undef PERLVARA
2611# undef PERLVARI
2612# undef PERLVARIC
cb68f92d
GS
2613#endif
2614
cb68f92d
GS
2615}
2616
76e3520e 2617STATIC void
cea2e8a9 2618S_init_main_stash(pTHX)
79072805 2619{
463ee0b2 2620 GV *gv;
6e72f9df 2621
3d47000e 2622
ac27b0f5 2623
3280af22 2624 PL_curstash = PL_defstash = newHV();
79cb57f6 2625 PL_curstname = newSVpvn("main",4);
adbc6bb1
LW
2626 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2627 SvREFCNT_dec(GvHV(gv));
3280af22 2628 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
463ee0b2 2629 SvREADONLY_on(gv);
3280af22
NIS
2630 HvNAME(PL_defstash) = savepv("main");
2631 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2632 GvMULTI_on(PL_incgv);
2633 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2634 GvMULTI_on(PL_hintgv);
2635 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2636 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2637 GvMULTI_on(PL_errgv);
2638 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2639 GvMULTI_on(PL_replgv);
cea2e8a9 2640 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
38a03e6e
MB
2641 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2642 sv_setpvn(ERRSV, "", 0);
3280af22 2643 PL_curstash = PL_defstash;
11faa288 2644 CopSTASH_set(&PL_compiling, PL_defstash);
ed094faf 2645 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
3280af22 2646 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
92d29cee 2647 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
4633a7c4 2648 /* We must init $/ before switches are processed. */
864dbfa3 2649 sv_setpvn(get_sv("/", TRUE), "\n", 1);
79072805
LW
2650}
2651
76e3520e 2652STATIC void
cea2e8a9 2653S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
79072805 2654{
1b24ed4b
MS
2655 char *quote;
2656 char *code;
2657 char *cpp_discard_flag;
2658 char *perl;
2659
6c4ab083 2660 *fdscript = -1;
79072805 2661
3280af22
NIS
2662 if (PL_e_script) {
2663 PL_origfilename = savepv("-e");
96436eeb 2664 }
6c4ab083
GS
2665 else {
2666 /* if find_script() returns, it returns a malloc()-ed value */
3280af22 2667 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
6c4ab083
GS
2668
2669 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2670 char *s = scriptname + 8;
2671 *fdscript = atoi(s);
2672 while (isDIGIT(*s))
2673 s++;
2674 if (*s) {
2675 scriptname = savepv(s + 1);
3280af22
NIS
2676 Safefree(PL_origfilename);
2677 PL_origfilename = scriptname;
6c4ab083
GS
2678 }
2679 }
2680 }
2681
1b24ed4b
MS
2682# ifdef USE_ITHREADS
2683 Safefree(CopFILE(PL_curcop));
2684# else
2685 SvREFCNT_dec(CopFILEGV(PL_curcop));
2686# endif
57843af0 2687 CopFILE_set(PL_curcop, PL_origfilename);
3280af22 2688 if (strEQ(PL_origfilename,"-"))
79072805 2689 scriptname = "";
01f988be 2690 if (*fdscript >= 0) {
3280af22 2691 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
1b24ed4b
MS
2692# if defined(HAS_FCNTL) && defined(F_SETFD)
2693 if (PL_rsfp)
2694 /* ensure close-on-exec */
2695 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1);
2696# endif
96436eeb 2697 }
3280af22 2698 else if (PL_preprocess) {
46fc3d4c 2699 char *cpp_cfg = CPPSTDIN;
79cb57f6 2700 SV *cpp = newSVpvn("",0);
46fc3d4c
PP
2701 SV *cmd = NEWSV(0,0);
2702
2703 if (strEQ(cpp_cfg, "cppstdin"))
cea2e8a9 2704 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
46fc3d4c 2705 sv_catpv(cpp, cpp_cfg);
79072805 2706
1b24ed4b
MS
2707# ifndef VMS
2708 sv_catpvn(sv, "-I", 2);
2709 sv_catpv(sv,PRIVLIB_EXP);
2710# endif
46fc3d4c 2711
14953ddc
MB
2712 DEBUG_P(PerlIO_printf(Perl_debug_log,
2713 "PL_preprocess: scriptname=\"%s\", cpp=\"%s\", sv=\"%s\", CPPMINUS=\"%s\"\n",
2714 scriptname, SvPVX (cpp), SvPVX (sv), CPPMINUS));
1b24ed4b
MS
2715
2716# if defined(MSDOS) || defined(WIN32) || defined(VMS)
2717 quote = "\"";
2718# else
2719 quote = "'";
2720# endif
2721
2722# ifdef VMS
2723 cpp_discard_flag = "";
2724# else
2725 cpp_discard_flag = "-C";
2726# endif
2727
2728# ifdef OS2
2729 perl = os2_execname(aTHX);
2730# else
2731 perl = PL_origargv[0];
2732# endif
2733
2734
2735 /* This strips off Perl comments which might interfere with
2736 the C pre-processor, including #!. #line directives are
2737 deliberately stripped to avoid confusion with Perl's version
2738 of #line. FWP played some golf with it so it will fit
2739 into VMS's 255 character buffer.
2740 */
2741 if( PL_doextract )
2742 code = "(1../^#!.*perl/i)|/^\\s*#(?!\\s*((ifn?|un)def|(el|end)?if|define|include|else|error|pragma)\\b)/||!($|=1)||print";
2743 else
2744 code = "/^\\s*#(?!\\s*((ifn?|un)def|(el|end)?if|define|include|else|error|pragma)\\b)/||!($|=1)||print";
2745
2746 Perl_sv_setpvf(aTHX_ cmd, "\
2747%s -ne%s%s%s %s | %"SVf" %s %"SVf" %s",
2748 perl, quote, code, quote, scriptname, cpp,
2749 cpp_discard_flag, sv, CPPMINUS);
2750
3280af22 2751 PL_doextract = FALSE;
1b24ed4b
MS
2752# ifdef IAMSUID /* actually, this is caught earlier */
2753 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
2754# ifdef HAS_SETEUID
2755 (void)seteuid(PL_uid); /* musn't stay setuid root */
2756# else
2757# ifdef HAS_SETREUID
2758 (void)setreuid((Uid_t)-1, PL_uid);
2759# else
2760# ifdef HAS_SETRESUID
2761 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
2762# else
2763 PerlProc_setuid(PL_uid);
2764# endif
2765# endif
2766# endif
b28d0864 2767 if (PerlProc_geteuid() != PL_uid)
cea2e8a9 2768 Perl_croak(aTHX_ "Can't do seteuid!\n");
79072805 2769 }
1b24ed4b 2770# endif /* IAMSUID */
0a6c758d 2771
1b24ed4b
MS
2772 DEBUG_P(PerlIO_printf(Perl_debug_log,
2773 "PL_preprocess: cmd=\"%s\"\n",
0a6c758d
MS
2774 SvPVX(cmd)));
2775
3280af22 2776 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
46fc3d4c
PP
2777 SvREFCNT_dec(cmd);
2778 SvREFCNT_dec(cpp);
79072805
LW
2779 }
2780 else if (!*scriptname) {
bbce6d69 2781 forbid_setid("program input from stdin");
3280af22 2782 PL_rsfp = PerlIO_stdin();
79072805 2783 }
96436eeb 2784 else {
3280af22 2785 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
1b24ed4b
MS
2786# if defined(HAS_FCNTL) && defined(F_SETFD)
2787 if (PL_rsfp)
2788 /* ensure close-on-exec */
2789 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1);
2790# endif
96436eeb 2791 }
3280af22 2792 if (!PL_rsfp) {
1b24ed4b
MS
2793# ifdef DOSUID
2794# ifndef IAMSUID /* in case script is not readable before setuid */
2795 if (PL_euid &&
2796 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
2797 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2798 {
2799 /* try again */
2800 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT,
2801 BIN_EXP, (int)PERL_REVISION,
2802 (int)PERL_VERSION,
2803 (int)PERL_SUBVERSION), PL_origargv);
2804 Perl_croak(aTHX_ "Can't do setuid\n");
2805 }
2806# endif
2807# endif
2808# ifdef IAMSUID
2809 errno = EPERM;
2810 Perl_croak(aTHX_ "Can't open perl script: %s\n",
2811 Strerror(errno));
2812# else
2813 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
2814 CopFILE(PL_curcop), Strerror(errno));
2815# endif
13281fa4 2816 }
79072805 2817}
8d063cd8 2818
7b89560d
JH
2819/* Mention
2820 * I_SYSSTATVFS HAS_FSTATVFS
2821 * I_SYSMOUNT
c890dc6c 2822 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
7b89560d
JH
2823 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2824 * here so that metaconfig picks them up. */
2825
104d25b7 2826#ifdef IAMSUID
864dbfa3 2827STATIC int
e688b231 2828S_fd_on_nosuid_fs(pTHX_ int fd)
104d25b7 2829{
0545a864
JH
2830 int check_okay = 0; /* able to do all the required sys/libcalls */
2831 int on_nosuid = 0; /* the fd is on a nosuid fs */
104d25b7 2832/*
ad27e871 2833 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
e688b231 2834 * fstatvfs() is UNIX98.
0545a864 2835 * fstatfs() is 4.3 BSD.
ad27e871 2836 * ustat()+getmnt() is pre-4.3 BSD.
0545a864
JH
2837 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2838 * an irrelevant filesystem while trying to reach the right one.
104d25b7
JH
2839 */
2840
6439433f
JH
2841#undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2842
2843# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2844 defined(HAS_FSTATVFS)
2845# define FD_ON_NOSUID_CHECK_OKAY
104d25b7 2846 struct statvfs stfs;
6439433f 2847
104d25b7
JH
2848 check_okay = fstatvfs(fd, &stfs) == 0;
2849 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
6439433f 2850# endif /* fstatvfs */
ac27b0f5 2851
6439433f
JH
2852# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2853 defined(PERL_MOUNT_NOSUID) && \
2854 defined(HAS_FSTATFS) && \
2855 defined(HAS_STRUCT_STATFS) && \
2856 defined(HAS_STRUCT_STATFS_F_FLAGS)
2857# define FD_ON_NOSUID_CHECK_OKAY
e688b231 2858 struct statfs stfs;
6439433f 2859
104d25b7 2860 check_okay = fstatfs(fd, &stfs) == 0;
104d25b7 2861 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
6439433f
JH
2862# endif /* fstatfs */
2863
2864# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2865 defined(PERL_MOUNT_NOSUID) && \
2866 defined(HAS_FSTAT) && \
2867 defined(HAS_USTAT) && \
2868 defined(HAS_GETMNT) && \
2869 defined(HAS_STRUCT_FS_DATA) && \
2870 defined(NOSTAT_ONE)
2871# define FD_ON_NOSUID_CHECK_OKAY
0545a864 2872 struct stat fdst;
6439433f 2873
0545a864 2874 if (fstat(fd, &fdst) == 0) {
6439433f
JH
2875 struct ustat us;
2876 if (ustat(fdst.st_dev, &us) == 0) {
2877 struct fs_data fsd;
2878 /* NOSTAT_ONE here because we're not examining fields which
2879 * vary between that case and STAT_ONE. */
ad27e871 2880 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
6439433f
JH
2881 size_t cmplen = sizeof(us.f_fname);
2882 if (sizeof(fsd.fd_req.path) < cmplen)
2883 cmplen = sizeof(fsd.fd_req.path);
2884 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2885 fdst.st_dev == fsd.fd_req.dev) {
2886 check_okay = 1;
2887 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2888 }
2889 }
2890 }
2891 }
0545a864 2892 }
6439433f
JH
2893# endif /* fstat+ustat+getmnt */
2894
2895# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2896 defined(HAS_GETMNTENT) && \
2897 defined(HAS_HASMNTOPT) && \
2898 defined(MNTOPT_NOSUID)
2899# define FD_ON_NOSUID_CHECK_OKAY
2900 FILE *mtab = fopen("/etc/mtab", "r");
2901 struct mntent *entry;
2902 struct stat stb, fsb;
104d25b7
JH
2903
2904 if (mtab && (fstat(fd, &stb) == 0)) {
6439433f
JH
2905 while (entry = getmntent(mtab)) {
2906 if (stat(entry->mnt_dir, &fsb) == 0
2907 && fsb.st_dev == stb.st_dev)
2908 {
2909 /* found the filesystem */
2910 check_okay = 1;
2911 if (hasmntopt(entry, MNTOPT_NOSUID))
2912 on_nosuid = 1;
2913 break;
2914 } /* A single fs may well fail its stat(). */
2915 }
104d25b7
JH
2916 }
2917 if (mtab)
6439433f
JH
2918 fclose(mtab);
2919# endif /* getmntent+hasmntopt */
0545a864 2920
ac27b0f5 2921 if (!check_okay)
0545a864 2922 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
104d25b7
JH
2923 return on_nosuid;
2924}
2925#endif /* IAMSUID */
2926
76e3520e 2927STATIC void
cea2e8a9 2928S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
79072805 2929{
155aba94 2930#ifdef IAMSUID
96436eeb 2931 int which;
155aba94 2932#endif
96436eeb 2933
13281fa4
LW
2934 /* do we need to emulate setuid on scripts? */
2935
2936 /* This code is for those BSD systems that have setuid #! scripts disabled
2937 * in the kernel because of a security problem. Merely defining DOSUID
2938 * in perl will not fix that problem, but if you have disabled setuid
2939 * scripts in the kernel, this will attempt to emulate setuid and setgid
2940 * on scripts that have those now-otherwise-useless bits set. The setuid
27e2fb84
LW
2941 * root version must be called suidperl or sperlN.NNN. If regular perl
2942 * discovers that it has opened a setuid script, it calls suidperl with
2943 * the same argv that it had. If suidperl finds that the script it has
2944 * just opened is NOT setuid root, it sets the effective uid back to the
2945 * uid. We don't just make perl setuid root because that loses the
2946 * effective uid we had before invoking perl, if it was different from the
2947 * uid.
13281fa4
LW
2948 *
2949 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2950 * be defined in suidperl only. suidperl must be setuid root. The
2951 * Configure script will set this up for you if you want it.
2952 */
a687059c 2953
13281fa4 2954#ifdef DOSUID
6e72f9df 2955 char *s, *s2;
a0d0e21e 2956
b28d0864 2957 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
cea2e8a9 2958 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
b28d0864 2959 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
79072805 2960 I32 len;
2d8e6c8d 2961 STRLEN n_a;
13281fa4 2962
a687059c 2963#ifdef IAMSUID
fe14fcc3 2964#ifndef HAS_SETREUID
a687059c
LW
2965 /* On this access check to make sure the directories are readable,
2966 * there is actually a small window that the user could use to make
2967 * filename point to an accessible directory. So there is a faint
2968 * chance that someone could execute a setuid script down in a
2969 * non-accessible directory. I don't know what to do about that.
2970 * But I don't think it's too important. The manual lies when
2971 * it says access() is useful in setuid programs.
2972 */
cc49e20b 2973 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
cea2e8a9 2974 Perl_croak(aTHX_ "Permission denied");
a687059c
LW
2975#else
2976 /* If we can swap euid and uid, then we can determine access rights
2977 * with a simple stat of the file, and then compare device and
2978 * inode to make sure we did stat() on the same file we opened.
2979 * Then we just have to make sure he or she can execute it.
2980 */
2981 {
2982 struct stat tmpstatbuf;
2983
85e6fe83
LW
2984 if (
2985#ifdef HAS_SETREUID
b28d0864 2986 setreuid(PL_euid,PL_uid) < 0
a0d0e21e
LW
2987#else
2988# if HAS_SETRESUID
b28d0864 2989 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
a0d0e21e 2990# endif
85e6fe83 2991#endif
b28d0864 2992 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
cea2e8a9 2993 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
cc49e20b 2994 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
cea2e8a9 2995 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
2bb3463c 2996#if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
e688b231 2997 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
cea2e8a9 2998 Perl_croak(aTHX_ "Permission denied");
104d25b7 2999#endif
b28d0864
NIS
3000 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
3001 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
3002 (void)PerlIO_close(PL_rsfp);
cea2e8a9 3003 Perl_croak(aTHX_ "Permission denied\n");
a687059c 3004 }
85e6fe83
LW
3005 if (
3006#ifdef HAS_SETREUID
b28d0864 3007 setreuid(PL_uid,PL_euid) < 0
a0d0e21e
LW
3008#else
3009# if defined(HAS_SETRESUID)
b28d0864 3010 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
a0d0e21e 3011# endif
85e6fe83 3012#endif
b28d0864 3013 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
cea2e8a9 3014 Perl_croak(aTHX_ "Can't reswap uid and euid");
b28d0864 3015 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
cea2e8a9 3016 Perl_croak(aTHX_ "Permission denied\n");
a687059c 3017 }
fe14fcc3 3018#endif /* HAS_SETREUID */
a687059c
LW
3019#endif /* IAMSUID */
3020
b28d0864 3021 if (!S_ISREG(PL_statbuf.st_mode))
cea2e8a9 3022 Perl_croak(aTHX_ "Permission denied");
b28d0864 3023 if (PL_statbuf.st_mode & S_IWOTH)
cea2e8a9 3024 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
6b88bc9c 3025 PL_doswitches = FALSE; /* -s is insecure in suid */
57843af0 3026 CopLINE_inc(PL_curcop);
6b88bc9c 3027 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
2d8e6c8d 3028 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
cea2e8a9 3029 Perl_croak(aTHX_ "No #! line");
2d8e6c8d 3030 s = SvPV(PL_linestr,n_a)+2;
663a0e37 3031 if (*s == ' ') s++;
45d8adaa 3032 while (!isSPACE(*s)) s++;
2d8e6c8d 3033 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
6e72f9df
PP
3034 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
3035 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
cea2e8a9 3036 Perl_croak(aTHX_ "Not a perl script");
a687059c 3037 while (*s == ' ' || *s == '\t') s++;
13281fa4
LW
3038 /*
3039 * #! arg must be what we saw above. They can invoke it by
3040 * mentioning suidperl explicitly, but they may not add any strange
3041 * arguments beyond what #! says if they do invoke suidperl that way.
3042 */
3043 len = strlen(validarg);
3044 if (strEQ(validarg," PHOOEY ") ||
45d8adaa 3045 strnNE(s,validarg,len) || !isSPACE(s[len]))
cea2e8a9 3046 Perl_croak(aTHX_ "Args must match #! line");
a687059c
LW
3047
3048#ifndef IAMSUID
b28d0864
NIS
3049 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
3050 PL_euid == PL_statbuf.st_uid)
3051 if (!PL_do_undump)
cea2e8a9 3052 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
a687059c
LW
3053FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3054#endif /* IAMSUID */
13281fa4 3055
b28d0864
NIS
3056 if (PL_euid) { /* oops, we're not the setuid root perl */
3057 (void)PerlIO_close(PL_rsfp);
13281fa4 3058#ifndef IAMSUID
46fc3d4c 3059 /* try again */
a7cb1f99 3060 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS
3061 (int)PERL_REVISION, (int)PERL_VERSION,
3062 (int)PERL_SUBVERSION), PL_origargv);
13281fa4 3063#endif
cea2e8a9 3064 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4
LW
3065 }
3066
b28d0864 3067 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
fe14fcc3 3068#ifdef HAS_SETEGID
b28d0864 3069 (void)setegid(PL_statbuf.st_gid);
a687059c 3070#else
fe14fcc3 3071#ifdef HAS_SETREGID
b28d0864 3072 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
85e6fe83
LW
3073#else
3074#ifdef HAS_SETRESGID
b28d0864 3075 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
a687059c 3076#else
b28d0864 3077 PerlProc_setgid(PL_statbuf.st_gid);
a687059c
LW
3078#endif
3079#endif
85e6fe83 3080#endif
b28d0864 3081 if (PerlProc_getegid() != PL_statbuf.st_gid)
cea2e8a9 3082 Perl_croak(aTHX_ "Can't do setegid!\n");
83025b21 3083 }
b28d0864
NIS
3084 if (PL_statbuf.st_mode & S_ISUID) {
3085 if (PL_statbuf.st_uid != PL_euid)
fe14fcc3 3086#ifdef HAS_SETEUID
b28d0864 3087 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
a687059c 3088#else
fe14fcc3 3089#ifdef HAS_SETREUID
b28d0864 3090 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
85e6fe83
LW
3091#else
3092#ifdef HAS_SETRESUID
b28d0864 3093 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
a687059c 3094#else
b28d0864 3095 PerlProc_setuid(PL_statbuf.st_uid);
a687059c
LW
3096#endif
3097#endif
85e6fe83 3098#endif
b28d0864 3099 if (PerlProc_geteuid() != PL_statbuf.st_uid)
cea2e8a9 3100 Perl_croak(aTHX_ "Can't do seteuid!\n");
a687059c 3101 }
b28d0864 3102 else if (PL_uid) { /* oops, mustn't run as root */
fe14fcc3 3103#ifdef HAS_SETEUID
b28d0864 3104 (void)seteuid((Uid_t)PL_uid);
a687059c 3105#else
fe14fcc3 3106#ifdef HAS_SETREUID
b28d0864 3107 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
a687059c 3108#else
85e6fe83 3109#ifdef HAS_SETRESUID
b28d0864 3110 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
85e6fe83 3111#else
b28d0864 3112 PerlProc_setuid((Uid_t)PL_uid);
85e6fe83 3113#endif
a687059c
LW
3114#endif
3115#endif
b28d0864 3116 if (PerlProc_geteuid() != PL_uid)
cea2e8a9 3117 Perl_croak(aTHX_ "Can't do seteuid!\n");
83025b21 3118 }
748a9306 3119 init_ids();
b28d0864 3120 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
cea2e8a9 3121 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
13281fa4
LW
3122 }
3123#ifdef IAMSUID
6b88bc9c 3124 else if (PL_preprocess)
cea2e8a9 3125 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
96436eeb 3126 else if (fdscript >= 0)
cea2e8a9 3127 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
13281fa4 3128 else
cea2e8a9 3129 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
96436eeb
PP
3130
3131 /* We absolutely must clear out any saved ids here, so we */
3132 /* exec the real perl, substituting fd script for scriptname. */
3133 /* (We pass script name as "subdir" of fd, which perl will grok.) */
b28d0864
NIS
3134 PerlIO_rewind(PL_rsfp);
3135 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
6b88bc9c
GS
3136 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3137 if (!PL_origargv[which])
cea2e8a9
GS
3138 Perl_croak(aTHX_ "Permission denied");
3139 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
6b88bc9c 3140 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
96436eeb 3141#if defined(HAS_FCNTL) && defined(F_SETFD)
b28d0864 3142 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
96436eeb 3143#endif
a7cb1f99 3144 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS
3145 (int)PERL_REVISION, (int)PERL_VERSION,
3146 (int)PERL_SUBVERSION), PL_origargv);/* try again */
cea2e8a9 3147 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4 3148#endif /* IAMSUID */
a687059c 3149#else /* !DOSUID */
3280af22 3150 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
a687059c 3151#ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
b28d0864
NIS
3152 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3153 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
a687059c 3154 ||
b28d0864 3155 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
a687059c 3156 )
b28d0864 3157 if (!PL_do_undump)
cea2e8a9 3158 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
a687059c
LW
3159FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3160#endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3161 /* not set-id, must be wrapped */
a687059c 3162 }
13281fa4 3163#endif /* DOSUID */
79072805 3164}
13281fa4 3165
76e3520e 3166STATIC void
cea2e8a9 3167S_find_beginning(pTHX)
79072805 3168{
6e72f9df 3169 register char *s, *s2;
33b78306
LW
3170
3171 /* skip forward in input to the real script? */
3172
bbce6d69 3173 forbid_setid("-x");
bf4acbe4 3174#ifdef MACOS_TRADITIONAL
084592ab 3175 /* Since the Mac OS does not honor #! arguments for us, we do it ourselves */
ac27b0f5 3176
bf4acbe4
GS
3177 while (PL_doextract || gMacPerl_AlwaysExtract) {
3178 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3179 if (!gMacPerl_AlwaysExtract)
3180 Perl_croak(aTHX_ "No Perl script found in input\n");
3181
3182 if (PL_doextract) /* require explicit override ? */
3183 if (!OverrideExtract(PL_origfilename))
3184 Perl_croak(aTHX_ "User aborted script\n");
3185 else
3186 PL_doextract = FALSE;
3187
3188 /* Pater peccavi, file does not have #! */
3189 PerlIO_rewind(PL_rsfp);
ac27b0f5 3190
bf4acbe4
GS
3191 break;
3192 }
3193#else
3280af22
NIS
3194 while (PL_doextract) {
3195 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
cea2e8a9 3196 Perl_croak(aTHX_ "No Perl script found in input\n");
bf4acbe4 3197#endif
4f0c37ba
IZ
3198 s2 = s;
3199 if (*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))) {
3280af22
NIS
3200 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3201 PL_doextract = FALSE;
6e72f9df
PP
3202 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3203 s2 = s;
3204 while (*s == ' ' || *s == '\t') s++;
3205 if (*s++ == '-') {
3206 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3207 if (strnEQ(s2-4,"perl",4))
3208 /*SUPPRESS 530*/
155aba94
GS
3209 while ((s = moreswitches(s)))
3210 ;
33b78306 3211 }
95e8664e
CN
3212#ifdef MACOS_TRADITIONAL
3213 break;
3214#endif
83025b21
LW
3215 }
3216 }
3217}
3218
afe37c7d 3219
76e3520e 3220STATIC void
cea2e8a9 3221S_init_ids(pTHX)
352d5a3a 3222{
d8eceb89
JH
3223 PL_uid = PerlProc_getuid();
3224 PL_euid = PerlProc_geteuid();
3225 PL_gid = PerlProc_getgid();
3226 PL_egid = PerlProc_getegid();
748a9306 3227#ifdef VMS
b28d0864
NIS
3228 PL_uid |= PL_gid << 16;
3229 PL_euid |= PL_egid << 16;
748a9306 3230#endif
3280af22 3231 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
748a9306 3232}
79072805 3233
76e3520e 3234STATIC void
cea2e8a9 3235S_forbid_setid(pTHX_ char *s)
bbce6d69 3236{
3280af22 3237 if (PL_euid != PL_uid)
cea2e8a9 3238 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3280af22 3239 if (PL_egid != PL_gid)
cea2e8a9 3240 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
bbce6d69
PP
3241}
3242
1ee4443e
IZ
3243void
3244Perl_init_debugger(pTHX)
748a9306 3245{
1ee4443e
IZ
3246 HV *ostash = PL_curstash;
3247
3280af22
NIS
3248 PL_curstash = PL_debstash;
3249 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3250 AvREAL_off(PL_dbargs);
3251 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3252 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3253 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
1ee4443e 3254 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3280af22 3255 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3256 sv_setiv(PL_DBsingle, 0);
3280af22 3257 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3258 sv_setiv(PL_DBtrace, 0);
3280af22 3259 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3260 sv_setiv(PL_DBsignal, 0);
1ee4443e 3261 PL_curstash = ostash;
352d5a3a
LW
3262}
3263
2ce36478
SM
3264#ifndef STRESS_REALLOC
3265#define REASONABLE(size) (size)
3266#else
3267#define REASONABLE(size) (1) /* unreasonable */
3268#endif
3269
11343788 3270void
cea2e8a9 3271Perl_init_stacks(pTHX)
79072805 3272{
e336de0d 3273 /* start with 128-item stack and 8K cxstack */
3280af22 3274 PL_curstackinfo = new_stackinfo(REASONABLE(128),
e336de0d 3275 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3280af22
NIS
3276 PL_curstackinfo->si_type = PERLSI_MAIN;
3277 PL_curstack = PL_curstackinfo->si_stack;
3278 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
79072805 3279
3280af22
NIS
3280 PL_stack_base = AvARRAY(PL_curstack);
3281 PL_stack_sp = PL_stack_base;
3282 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
8990e307 3283
3280af22
NIS
3284 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3285 PL_tmps_floor = -1;
3286 PL_tmps_ix = -1;
3287 PL_tmps_max = REASONABLE(128);
8990e307 3288
3280af22
NIS
3289 New(54,PL_markstack,REASONABLE(32),I32);
3290 PL_markstack_ptr = PL_markstack;
3291 PL_markstack_max = PL_markstack + REASONABLE(32);
79072805 3292
ce2f7c3b 3293 SET_MARK_OFFSET;
e336de0d 3294
3280af22
NIS
3295 New(54,PL_scopestack,REASONABLE(32),I32);
3296 PL_scopestack_ix = 0;
3297 PL_scopestack_max = REASONABLE(32);
79072805 3298
3280af22
NIS
3299 New(54,PL_savestack,REASONABLE(128),ANY);
3300 PL_savestack_ix = 0;
3301 PL_savestack_max = REASONABLE(128);
79072805 3302
3280af22
NIS
3303 New(54,PL_retstack,REASONABLE(16),OP*);
3304 PL_retstack_ix = 0;
3305 PL_retstack_max = REASONABLE(16);
378cc40b 3306}
33b78306 3307
2ce36478
SM
3308#undef REASONABLE
3309
76e3520e 3310STATIC void
cea2e8a9 3311S_nuke_stacks(pTHX)
6e72f9df 3312{
3280af22
NIS
3313 while (PL_curstackinfo->si_next)
3314 PL_curstackinfo = PL_curstackinfo->si_next;
3315 while (PL_curstackinfo) {
3316 PERL_SI *p = PL_curstackinfo->si_prev;
bac4b2ad 3317 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3280af22
NIS
3318 Safefree(PL_curstackinfo->si_cxstack);
3319 Safefree(PL_curstackinfo);
3320 PL_curstackinfo = p;
e336de0d 3321 }
3280af22
NIS
3322 Safefree(PL_tmps_stack);
3323 Safefree(PL_markstack);
3324 Safefree(PL_scopestack);
3325 Safefree(PL_savestack);
3326 Safefree(PL_retstack);
378cc40b 3327}
33b78306 3328
76e3520e 3329STATIC void
cea2e8a9 3330S_init_lexer(pTHX)
8990e307 3331{
06039172 3332 PerlIO *tmpfp;
3280af22
NIS
3333 tmpfp = PL_rsfp;
3334 PL_rsfp = Nullfp;
3335 lex_start(PL_linestr);
3336 PL_rsfp = tmpfp;
79cb57f6 3337 PL_subname = newSVpvn("main",4);
8990e307
LW
3338}
3339
76e3520e 3340STATIC void
cea2e8a9 3341S_init_predump_symbols(pTHX)
45d8adaa 3342{
93a17b20 3343 GV *tmpgv;
af8c498a 3344 IO *io;
79072805 3345
864dbfa3 3346 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3280af22
NIS
3347 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3348 GvMULTI_on(PL_stdingv);
af8c498a 3349 io = GvIOp(PL_stdingv);
a04651f4 3350 IoTYPE(io) = IoTYPE_RDONLY;
af8c498a 3351 IoIFP(io) = PerlIO_stdin();
adbc6bb1 3352 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
a5f75d66 3353 GvMULTI_on(tmpgv);
af8c498a 3354 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3355
85e6fe83 3356 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
a5f75d66 3357 GvMULTI_on(tmpgv);
af8c498a 3358 io = GvIOp(tmpgv);
a04651f4 3359 IoTYPE(io) = IoTYPE_WRONLY;
af8c498a 3360 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
4633a7c4 3361 setdefout(tmpgv);
adbc6bb1 3362 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
a5f75d66 3363 GvMULTI_on(tmpgv);
af8c498a 3364 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3365
bf49b057
GS
3366 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3367 GvMULTI_on(PL_stderrgv);
3368 io = GvIOp(PL_stderrgv);
a04651f4 3369 IoTYPE(io) = IoTYPE_WRONLY;
af8c498a 3370 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
adbc6bb1 3371 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
a5f75d66 3372 GvMULTI_on(tmpgv);
af8c498a 3373 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3374
3280af22 3375 PL_statname = NEWSV(66,0); /* last filename we did stat on */
ab821d7f 3376
bf4acbe4
GS
3377 if (PL_osname)
3378 Safefree(PL_osname);
3379 PL_osname = savepv(OSNAME);
79072805 3380}
33b78306 3381
a11ec5a9
RGS
3382void
3383Perl_init_argv_symbols(pTHX_ register int argc, register char **argv)
33b78306 3384{
79072805 3385 char *s;
79072805 3386 argc--,argv++; /* skip name of script */
3280af22 3387 if (PL_doswitches) {
79072805
LW
3388 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3389 if (!argv[0][1])
3390 break;
379d538a 3391 if (argv[0][1] == '-' && !argv[0][2]) {
79072805
LW
3392 argc--,argv++;
3393 break;
3394 }
155aba94 3395 if ((s = strchr(argv[0], '='))) {
79072805 3396 *s++ = '\0';
85e6fe83 3397 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
79072805
LW
3398 }
3399 else
85e6fe83 3400 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
fe14fcc3 3401 }
79072805 3402 }
a11ec5a9
RGS
3403 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3404 GvMULTI_on(PL_argvgv);
3405 (void)gv_AVadd(PL_argvgv);
3406 av_clear(GvAVn(PL_argvgv));
3407 for (; argc > 0; argc--,argv++) {
3408 SV *sv = newSVpv(argv[0],0);
3409 av_push(GvAVn(PL_argvgv),sv);
3410 if (PL_widesyscalls)
3411 (void)sv_utf8_decode(sv);
3412 }
3413 }
3414}
3415
04fee9b5
NIS
3416#ifdef HAS_PROCSELFEXE
3417/* This is a function so that we don't hold on to MAXPATHLEN
8338e367 3418 bytes of stack longer than necessary
04fee9b5
NIS
3419 */
3420STATIC void
3421S_procself_val(pTHX_ SV *sv, char *arg0)
3422{
3423 char buf[MAXPATHLEN];
d13a6521 3424 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
04fee9b5
NIS
3425 if (len > 0) {
3426 sv_setpvn(sv,buf,len);
3427 }
3428 else {
3429 sv_setpv(sv,arg0);
3430 }
3431}
3432#endif /* HAS_PROCSELFEXE */
3433
a11ec5a9
RGS
3434STATIC void
3435S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
3436{
3437 char *s;
3438 SV *sv;
3439 GV* tmpgv;
a11ec5a9 3440
3280af22
NIS
3441 PL_toptarget = NEWSV(0,0);
3442 sv_upgrade(PL_toptarget, SVt_PVFM);
3443 sv_setpvn(PL_toptarget, "", 0);
3444 PL_bodytarget = NEWSV(0,0);
3445 sv_upgrade(PL_bodytarget, SVt_PVFM);
3446 sv_setpvn(PL_bodytarget, "", 0);
3447 PL_formtarget = PL_bodytarget;
79072805 3448
bbce6d69 3449 TAINT;
a11ec5a9
RGS
3450
3451 init_argv_symbols(argc,argv);
3452
155aba94 3453 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
bf4acbe4
GS
3454#ifdef MACOS_TRADITIONAL
3455 /* $0 is not majick on a Mac */
3456 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3457#else
3280af22 3458 sv_setpv(GvSV(tmpgv),PL_origfilename);
79072805 3459 magicname("0", "0", 1);
bf4acbe4 3460#endif
79072805 3461 }
04fee9b5
NIS
3462 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV))) {/* $^X */
3463#ifdef HAS_PROCSELFEXE
3464 S_procself_val(aTHX_ GvSV(tmpgv), PL_origargv[0]);
3465#else
8338e367 3466#ifdef OS2
23da6c43 3467 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
8338e367
JH
3468#else
3469 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
3470#endif
04fee9b5
NIS
3471#endif
3472 }
155aba94 3473 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
79072805 3474 HV *hv;
3280af22
NIS
3475 GvMULTI_on(PL_envgv);
3476 hv = GvHVn(PL_envgv);
14befaf4 3477 hv_magic(hv, Nullgv, PERL_MAGIC_env);
fa6a1c44 3478#ifdef USE_ENVIRON_ARRAY
4633a7c4
LW
3479 /* Note that if the supplied env parameter is actually a copy
3480 of the global environ then it may now point to free'd memory
3481 if the environment has been modified since. To avoid this
3482 problem we treat env==NULL as meaning 'use the default'
3483 */
3484 if (!env)
3485 env = environ;
5aabfad6 3486 if (env != environ)