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Retract #19785 and #19756: JPL nowadays works without this
[perl5.git] / perl.c
CommitLineData
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1/* perl.c
2 *
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3 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999,
4 * 2000, 2001, 2002, 2003, by Larry Wall and others
a687059c 5 *
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6 * You may distribute under the terms of either the GNU General Public
7 * License or the Artistic License, as specified in the README file.
a687059c 8 *
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9 */
10
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11/*
12 * "A ship then new they built for him/of mithril and of elven glass" --Bilbo
13 */
45d8adaa 14
378cc40b 15#include "EXTERN.h"
864dbfa3 16#define PERL_IN_PERL_C
378cc40b 17#include "perl.h"
e3321bb0 18#include "patchlevel.h" /* for local_patches */
378cc40b 19
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20#ifdef NETWARE
21#include "nwutil.h"
22char *nw_get_sitelib(const char *pl);
23#endif
24
df5cef82 25/* XXX If this causes problems, set i_unistd=undef in the hint file. */
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26#ifdef I_UNISTD
27#include <unistd.h>
28#endif
a0d0e21e 29
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30#ifdef __BEOS__
31# define HZ 1000000
32#endif
33
34#ifndef HZ
35# ifdef CLK_TCK
36# define HZ CLK_TCK
37# else
38# define HZ 60
39# endif
40#endif
41
7114a2d2 42#if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
20ce7b12 43char *getenv (char *); /* Usually in <stdlib.h> */
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44#endif
45
acfe0abc 46static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
0cb96387 47
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48#ifdef IAMSUID
49#ifndef DOSUID
50#define DOSUID
51#endif
52#endif
378cc40b 53
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54#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
55#ifdef DOSUID
56#undef DOSUID
57#endif
58#endif
8d063cd8 59
3db8f154 60#if defined(USE_ITHREADS)
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GS
61# define INIT_TLS_AND_INTERP \
62 STMT_START { \
63 if (!PL_curinterp) { \
64 PERL_SET_INTERP(my_perl); \
65 INIT_THREADS; \
66 ALLOC_THREAD_KEY; \
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67 PERL_SET_THX(my_perl); \
68 OP_REFCNT_INIT; \
7d4724a4 69 MUTEX_INIT(&PL_dollarzero_mutex); \
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70 } \
71 else { \
72 PERL_SET_THX(my_perl); \
06d86050 73 } \
06d86050 74 } STMT_END
3db8f154 75#else
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76# define INIT_TLS_AND_INTERP \
77 STMT_START { \
78 if (!PL_curinterp) { \
79 PERL_SET_INTERP(my_perl); \
80 } \
81 PERL_SET_THX(my_perl); \
82 } STMT_END
83# endif
06d86050 84
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85#ifdef PERL_IMPLICIT_SYS
86PerlInterpreter *
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87perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
88 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
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89 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
90 struct IPerlDir* ipD, struct IPerlSock* ipS,
91 struct IPerlProc* ipP)
92{
93 PerlInterpreter *my_perl;
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94 /* New() needs interpreter, so call malloc() instead */
95 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
06d86050 96 INIT_TLS_AND_INTERP;
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97 Zero(my_perl, 1, PerlInterpreter);
98 PL_Mem = ipM;
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99 PL_MemShared = ipMS;
100 PL_MemParse = ipMP;
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101 PL_Env = ipE;
102 PL_StdIO = ipStd;
103 PL_LIO = ipLIO;
104 PL_Dir = ipD;
105 PL_Sock = ipS;
106 PL_Proc = ipP;
7766f137 107
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108 return my_perl;
109}
110#else
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111
112/*
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113=head1 Embedding Functions
114
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115=for apidoc perl_alloc
116
117Allocates a new Perl interpreter. See L<perlembed>.
118
119=cut
120*/
121
93a17b20 122PerlInterpreter *
cea2e8a9 123perl_alloc(void)
79072805 124{
cea2e8a9 125 PerlInterpreter *my_perl;
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126#ifdef USE_5005THREADS
127 dTHX;
128#endif
79072805 129
54aff467 130 /* New() needs interpreter, so call malloc() instead */
e8ee3774 131 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 132
06d86050 133 INIT_TLS_AND_INTERP;
dedcbb81 134 Zero(my_perl, 1, PerlInterpreter);
cea2e8a9 135 return my_perl;
79072805 136}
32e30700 137#endif /* PERL_IMPLICIT_SYS */
79072805 138
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139/*
140=for apidoc perl_construct
141
142Initializes a new Perl interpreter. See L<perlembed>.
143
144=cut
145*/
146
79072805 147void
0cb96387 148perl_construct(pTHXx)
79072805 149{
8990e307 150#ifdef MULTIPLICITY
54aff467 151 init_interp();
ac27b0f5 152 PL_perl_destruct_level = 1;
54aff467
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153#else
154 if (PL_perl_destruct_level > 0)
155 init_interp();
156#endif
157
33f46ff6 158 /* Init the real globals (and main thread)? */
3280af22 159 if (!PL_linestr) {
14dd3ad8 160#ifdef PERL_FLEXIBLE_EXCEPTIONS
0b94c7bb 161 PL_protect = MEMBER_TO_FPTR(Perl_default_protect); /* for exceptions */
14dd3ad8 162#endif
312caa8e 163
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164 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
165
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166 PL_linestr = NEWSV(65,79);
167 sv_upgrade(PL_linestr,SVt_PVIV);
79072805 168
3280af22 169 if (!SvREADONLY(&PL_sv_undef)) {
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170 /* set read-only and try to insure than we wont see REFCNT==0
171 very often */
172
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173 SvREADONLY_on(&PL_sv_undef);
174 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
79072805 175
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176 sv_setpv(&PL_sv_no,PL_No);
177 SvNV(&PL_sv_no);
178 SvREADONLY_on(&PL_sv_no);
179 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
79072805 180
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181 sv_setpv(&PL_sv_yes,PL_Yes);
182 SvNV(&PL_sv_yes);
183 SvREADONLY_on(&PL_sv_yes);
184 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
6e72f9df 185 }
79072805 186
cea2e8a9 187 PL_sighandlerp = Perl_sighandler;
3280af22 188 PL_pidstatus = newHV();
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189 }
190
8bfdd7d9 191 PL_rs = newSVpvn("\n", 1);
dc92893f 192
cea2e8a9 193 init_stacks();
79072805 194
748a9306 195 init_ids();
3280af22 196 PL_lex_state = LEX_NOTPARSING;
a5f75d66 197
312caa8e 198 JMPENV_BOOTSTRAP;
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199 STATUS_ALL_SUCCESS;
200
0672f40e 201 init_i18nl10n(1);
36477c24 202 SET_NUMERIC_STANDARD();
0b5b802d 203
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204 {
205 U8 *s;
206 PL_patchlevel = NEWSV(0,4);
155aba94 207 (void)SvUPGRADE(PL_patchlevel, SVt_PVNV);
a7cb1f99 208 if (PERL_REVISION > 127 || PERL_VERSION > 127 || PERL_SUBVERSION > 127)
806e7201 209 SvGROW(PL_patchlevel, UTF8_MAXLEN*3+1);
a7cb1f99 210 s = (U8*)SvPVX(PL_patchlevel);
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211 /* Build version strings using "native" characters */
212 s = uvchr_to_utf8(s, (UV)PERL_REVISION);
213 s = uvchr_to_utf8(s, (UV)PERL_VERSION);
214 s = uvchr_to_utf8(s, (UV)PERL_SUBVERSION);
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215 *s = '\0';
216 SvCUR_set(PL_patchlevel, s - (U8*)SvPVX(PL_patchlevel));
217 SvPOK_on(PL_patchlevel);
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218 SvNVX(PL_patchlevel) = (NV)PERL_REVISION +
219 ((NV)PERL_VERSION / (NV)1000) +
220 ((NV)PERL_SUBVERSION / (NV)1000000);
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221 SvNOK_on(PL_patchlevel); /* dual valued */
222 SvUTF8_on(PL_patchlevel);
223 SvREADONLY_on(PL_patchlevel);
224 }
79072805 225
ab821d7f 226#if defined(LOCAL_PATCH_COUNT)
3280af22 227 PL_localpatches = local_patches; /* For possible -v */
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228#endif
229
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230#ifdef HAVE_INTERP_INTERN
231 sys_intern_init();
232#endif
233
3a1ee7e8 234 PerlIO_init(aTHX); /* Hook to IO system */
760ac839 235
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236 PL_fdpid = newAV(); /* for remembering popen pids by fd */
237 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
24944567 238 PL_errors = newSVpvn("",0);
48c6b404 239 sv_setpvn(PERL_DEBUG_PAD(0), "", 0); /* For regex debugging. */
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240 sv_setpvn(PERL_DEBUG_PAD(1), "", 0); /* ext/re needs these */
241 sv_setpvn(PERL_DEBUG_PAD(2), "", 0); /* even without DEBUGGING. */
1fcf4c12 242#ifdef USE_ITHREADS
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243 PL_regex_padav = newAV();
244 av_push(PL_regex_padav,(SV*)newAV()); /* First entry is an array of empty elements */
245 PL_regex_pad = AvARRAY(PL_regex_padav);
1fcf4c12 246#endif
e5dd39fc 247#ifdef USE_REENTRANT_API
59bd0823 248 Perl_reentrant_init(aTHX);
e5dd39fc 249#endif
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250
251 /* Note that strtab is a rather special HV. Assumptions are made
252 about not iterating on it, and not adding tie magic to it.
253 It is properly deallocated in perl_destruct() */
254 PL_strtab = newHV();
255
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256 HvSHAREKEYS_off(PL_strtab); /* mandatory */
257 hv_ksplit(PL_strtab, 512);
258
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259#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
260 _dyld_lookup_and_bind
261 ("__environ", (unsigned long *) &environ_pointer, NULL);
262#endif /* environ */
263
264#ifdef USE_ENVIRON_ARRAY
265 PL_origenviron = environ;
266#endif
267
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268 /* Use sysconf(_SC_CLK_TCK) if available, if not
269 * available or if the sysconf() fails, use the HZ. */
270#if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK)
271 PL_clocktick = sysconf(_SC_CLK_TCK);
272 if (PL_clocktick <= 0)
273#endif
274 PL_clocktick = HZ;
275
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276 PL_stashcache = newHV();
277
8990e307 278 ENTER;
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279}
280
954c1994 281/*
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282=for apidoc nothreadhook
283
284Stub that provides thread hook for perl_destruct when there are
285no threads.
286
287=cut
288*/
289
290int
4e9e3734 291Perl_nothreadhook(pTHX)
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292{
293 return 0;
294}
295
296/*
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297=for apidoc perl_destruct
298
299Shuts down a Perl interpreter. See L<perlembed>.
300
301=cut
302*/
303
31d77e54 304int
0cb96387 305perl_destruct(pTHXx)
79072805 306{
7c474504 307 volatile int destruct_level; /* 0=none, 1=full, 2=full with checks */
a0d0e21e 308 HV *hv;
4d1ff10f 309#ifdef USE_5005THREADS
cea2e8a9 310 dTHX;
4d1ff10f 311#endif /* USE_5005THREADS */
8990e307 312
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313 /* wait for all pseudo-forked children to finish */
314 PERL_WAIT_FOR_CHILDREN;
315
3280af22 316 destruct_level = PL_perl_destruct_level;
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317#ifdef DEBUGGING
318 {
319 char *s;
155aba94 320 if ((s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL"))) {
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321 int i = atoi(s);
322 if (destruct_level < i)
323 destruct_level = i;
324 }
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325 }
326#endif
327
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328
329 if(PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
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330 dJMPENV;
331 int x = 0;
332
333 JMPENV_PUSH(x);
334 if (PL_endav && !PL_minus_c)
335 call_list(PL_scopestack_ix, PL_endav);
336 JMPENV_POP;
26f423df 337 }
f3faeb53 338 LEAVE;
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339 FREETMPS;
340
e00b64d4 341 /* Need to flush since END blocks can produce output */
f13a2bc0 342 my_fflush_all();
e00b64d4 343
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344 if (CALL_FPTR(PL_threadhook)(aTHX)) {
345 /* Threads hook has vetoed further cleanup */
b47cad08 346 return STATUS_NATIVE_EXPORT;
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347 }
348
ff0cee69
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349 /* We must account for everything. */
350
351 /* Destroy the main CV and syntax tree */
3280af22 352 if (PL_main_root) {
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353 op_free(PL_main_root);
354 PL_main_root = Nullop;
a0d0e21e 355 }
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NIS
356 PL_curcop = &PL_compiling;
357 PL_main_start = Nullop;
358 SvREFCNT_dec(PL_main_cv);
359 PL_main_cv = Nullcv;
24d3c518 360 PL_dirty = TRUE;
ff0cee69 361
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NIS
362 /* Tell PerlIO we are about to tear things apart in case
363 we have layers which are using resources that should
364 be cleaned up now.
365 */
366
367 PerlIO_destruct(aTHX);
368
3280af22 369 if (PL_sv_objcount) {
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LW
370 /*
371 * Try to destruct global references. We do this first so that the
372 * destructors and destructees still exist. Some sv's might remain.
373 * Non-referenced objects are on their own.
374 */
a0d0e21e 375 sv_clean_objs();
8990e307
LW
376 }
377
5cd24f17 378 /* unhook hooks which will soon be, or use, destroyed data */
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379 SvREFCNT_dec(PL_warnhook);
380 PL_warnhook = Nullsv;
381 SvREFCNT_dec(PL_diehook);
382 PL_diehook = Nullsv;
5cd24f17 383
4b556e6c 384 /* call exit list functions */
3280af22 385 while (PL_exitlistlen-- > 0)
acfe0abc 386 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 387
3280af22 388 Safefree(PL_exitlist);
4b556e6c 389
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390 PL_exitlist = NULL;
391 PL_exitlistlen = 0;
392
a0d0e21e 393 if (destruct_level == 0){
8990e307 394
a0d0e21e 395 DEBUG_P(debprofdump());
ac27b0f5 396
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397#if defined(PERLIO_LAYERS)
398 /* No more IO - including error messages ! */
399 PerlIO_cleanup(aTHX);
400#endif
401
a0d0e21e 402 /* The exit() function will do everything that needs doing. */
b47cad08 403 return STATUS_NATIVE_EXPORT;
a0d0e21e 404 }
5dd60ef7 405
551a8b83 406 /* jettison our possibly duplicated environment */
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DM
407 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
408 * so we certainly shouldn't free it here
409 */
410#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
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GS
411 if (environ != PL_origenviron
412#ifdef USE_ITHREADS
413 /* only main thread can free environ[0] contents */
414 && PL_curinterp == aTHX
415#endif
416 )
417 {
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418 I32 i;
419
420 for (i = 0; environ[i]; i++)
4b420006 421 safesysfree(environ[i]);
0631ea03 422
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JH
423 /* Must use safesysfree() when working with environ. */
424 safesysfree(environ);
551a8b83
JH
425
426 environ = PL_origenviron;
427 }
428#endif
429
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DM
430#ifdef USE_ITHREADS
431 /* the syntax tree is shared between clones
432 * so op_free(PL_main_root) only ReREFCNT_dec's
433 * REGEXPs in the parent interpreter
434 * we need to manually ReREFCNT_dec for the clones
435 */
436 {
437 I32 i = AvFILLp(PL_regex_padav) + 1;
438 SV **ary = AvARRAY(PL_regex_padav);
439
440 while (i) {
35061a7e 441 SV *resv = ary[--i];
ba89bb6e 442 REGEXP *re = INT2PTR(REGEXP *,SvIVX(resv));
35061a7e
DM
443
444 if (SvFLAGS(resv) & SVf_BREAK) {
577e12cc 445 /* this is PL_reg_curpm, already freed
35061a7e
DM
446 * flag is set in regexec.c:S_regtry
447 */
448 SvFLAGS(resv) &= ~SVf_BREAK;
3a1ee7e8 449 }
1cc8b4c5
AB
450 else if(SvREPADTMP(resv)) {
451 SvREPADTMP_off(resv);
452 }
35061a7e 453 else {
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DM
454 ReREFCNT_dec(re);
455 }
456 }
457 }
458 SvREFCNT_dec(PL_regex_padav);
459 PL_regex_padav = Nullav;
460 PL_regex_pad = NULL;
461#endif
462
081fc587
AB
463 SvREFCNT_dec((SV*) PL_stashcache);
464 PL_stashcache = NULL;
465
5f05dabc
PP
466 /* loosen bonds of global variables */
467
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468 if(PL_rsfp) {
469 (void)PerlIO_close(PL_rsfp);
470 PL_rsfp = Nullfp;
8ebc5c01
PP
471 }
472
473 /* Filters for program text */
3280af22
NIS
474 SvREFCNT_dec(PL_rsfp_filters);
475 PL_rsfp_filters = Nullav;
8ebc5c01
PP
476
477 /* switches */
3280af22
NIS
478 PL_preprocess = FALSE;
479 PL_minus_n = FALSE;
480 PL_minus_p = FALSE;
481 PL_minus_l = FALSE;
482 PL_minus_a = FALSE;
483 PL_minus_F = FALSE;
484 PL_doswitches = FALSE;
599cee73 485 PL_dowarn = G_WARN_OFF;
3280af22
NIS
486 PL_doextract = FALSE;
487 PL_sawampersand = FALSE; /* must save all match strings */
3280af22
NIS
488 PL_unsafe = FALSE;
489
490 Safefree(PL_inplace);
491 PL_inplace = Nullch;
a7cb1f99 492 SvREFCNT_dec(PL_patchlevel);
3280af22
NIS
493
494 if (PL_e_script) {
495 SvREFCNT_dec(PL_e_script);
496 PL_e_script = Nullsv;
8ebc5c01
PP
497 }
498
499 /* magical thingies */
500
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NIS
501 SvREFCNT_dec(PL_ofs_sv); /* $, */
502 PL_ofs_sv = Nullsv;
5f05dabc 503
7889fe52
NIS
504 SvREFCNT_dec(PL_ors_sv); /* $\ */
505 PL_ors_sv = Nullsv;
8ebc5c01 506
3280af22
NIS
507 SvREFCNT_dec(PL_rs); /* $/ */
508 PL_rs = Nullsv;
dc92893f 509
d33b2eba
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510 PL_multiline = 0; /* $* */
511 Safefree(PL_osname); /* $^O */
512 PL_osname = Nullch;
5f05dabc 513
3280af22
NIS
514 SvREFCNT_dec(PL_statname);
515 PL_statname = Nullsv;
516 PL_statgv = Nullgv;
5f05dabc 517
8ebc5c01
PP
518 /* defgv, aka *_ should be taken care of elsewhere */
519
8ebc5c01 520 /* clean up after study() */
3280af22
NIS
521 SvREFCNT_dec(PL_lastscream);
522 PL_lastscream = Nullsv;
523 Safefree(PL_screamfirst);
524 PL_screamfirst = 0;
525 Safefree(PL_screamnext);
526 PL_screamnext = 0;
8ebc5c01 527
7d5ea4e7
GS
528 /* float buffer */
529 Safefree(PL_efloatbuf);
530 PL_efloatbuf = Nullch;
531 PL_efloatsize = 0;
532
8ebc5c01 533 /* startup and shutdown function lists */
3280af22 534 SvREFCNT_dec(PL_beginav);
5a837c8f 535 SvREFCNT_dec(PL_beginav_save);
3280af22 536 SvREFCNT_dec(PL_endav);
7d30b5c4 537 SvREFCNT_dec(PL_checkav);
ece599bd 538 SvREFCNT_dec(PL_checkav_save);
3280af22
NIS
539 SvREFCNT_dec(PL_initav);
540 PL_beginav = Nullav;
5a837c8f 541 PL_beginav_save = Nullav;
3280af22 542 PL_endav = Nullav;
7d30b5c4 543 PL_checkav = Nullav;
ece599bd 544 PL_checkav_save = Nullav;
3280af22 545 PL_initav = Nullav;
5618dfe8 546
8ebc5c01 547 /* shortcuts just get cleared */
3280af22 548 PL_envgv = Nullgv;
3280af22
NIS
549 PL_incgv = Nullgv;
550 PL_hintgv = Nullgv;
551 PL_errgv = Nullgv;
552 PL_argvgv = Nullgv;
553 PL_argvoutgv = Nullgv;
554 PL_stdingv = Nullgv;
bf49b057 555 PL_stderrgv = Nullgv;
3280af22
NIS
556 PL_last_in_gv = Nullgv;
557 PL_replgv = Nullgv;
5c831c24 558 PL_debstash = Nullhv;
8ebc5c01
PP
559
560 /* reset so print() ends up where we expect */
561 setdefout(Nullgv);
5c831c24 562
7a1c5554
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563 SvREFCNT_dec(PL_argvout_stack);
564 PL_argvout_stack = Nullav;
8ebc5c01 565
5c831c24
GS
566 SvREFCNT_dec(PL_modglobal);
567 PL_modglobal = Nullhv;
568 SvREFCNT_dec(PL_preambleav);
569 PL_preambleav = Nullav;
570 SvREFCNT_dec(PL_subname);
571 PL_subname = Nullsv;
572 SvREFCNT_dec(PL_linestr);
573 PL_linestr = Nullsv;
574 SvREFCNT_dec(PL_pidstatus);
575 PL_pidstatus = Nullhv;
576 SvREFCNT_dec(PL_toptarget);
577 PL_toptarget = Nullsv;
578 SvREFCNT_dec(PL_bodytarget);
579 PL_bodytarget = Nullsv;
580 PL_formtarget = Nullsv;
581
d33b2eba 582 /* free locale stuff */
b9582b6a 583#ifdef USE_LOCALE_COLLATE
d33b2eba
GS
584 Safefree(PL_collation_name);
585 PL_collation_name = Nullch;
b9582b6a 586#endif
d33b2eba 587
b9582b6a 588#ifdef USE_LOCALE_NUMERIC
d33b2eba
GS
589 Safefree(PL_numeric_name);
590 PL_numeric_name = Nullch;
a453c169 591 SvREFCNT_dec(PL_numeric_radix_sv);
b9582b6a 592#endif
d33b2eba 593
5c831c24
GS
594 /* clear utf8 character classes */
595 SvREFCNT_dec(PL_utf8_alnum);
596 SvREFCNT_dec(PL_utf8_alnumc);
597 SvREFCNT_dec(PL_utf8_ascii);
598 SvREFCNT_dec(PL_utf8_alpha);
599 SvREFCNT_dec(PL_utf8_space);
600 SvREFCNT_dec(PL_utf8_cntrl);
601 SvREFCNT_dec(PL_utf8_graph);
602 SvREFCNT_dec(PL_utf8_digit);
603 SvREFCNT_dec(PL_utf8_upper);
604 SvREFCNT_dec(PL_utf8_lower);
605 SvREFCNT_dec(PL_utf8_print);
606 SvREFCNT_dec(PL_utf8_punct);
607 SvREFCNT_dec(PL_utf8_xdigit);
608 SvREFCNT_dec(PL_utf8_mark);
609 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 610 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 611 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 612 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH
613 SvREFCNT_dec(PL_utf8_idstart);
614 SvREFCNT_dec(PL_utf8_idcont);
5c831c24
GS
615 PL_utf8_alnum = Nullsv;
616 PL_utf8_alnumc = Nullsv;
617 PL_utf8_ascii = Nullsv;
618 PL_utf8_alpha = Nullsv;
619 PL_utf8_space = Nullsv;
620 PL_utf8_cntrl = Nullsv;
621 PL_utf8_graph = Nullsv;
622 PL_utf8_digit = Nullsv;
623 PL_utf8_upper = Nullsv;
624 PL_utf8_lower = Nullsv;
625 PL_utf8_print = Nullsv;
626 PL_utf8_punct = Nullsv;
627 PL_utf8_xdigit = Nullsv;
628 PL_utf8_mark = Nullsv;
629 PL_utf8_toupper = Nullsv;
630 PL_utf8_totitle = Nullsv;
631 PL_utf8_tolower = Nullsv;
b4e400f9 632 PL_utf8_tofold = Nullsv;
82686b01
JH
633 PL_utf8_idstart = Nullsv;
634 PL_utf8_idcont = Nullsv;
5c831c24 635
971a9dd3
GS
636 if (!specialWARN(PL_compiling.cop_warnings))
637 SvREFCNT_dec(PL_compiling.cop_warnings);
5c831c24 638 PL_compiling.cop_warnings = Nullsv;
ac27b0f5
NIS
639 if (!specialCopIO(PL_compiling.cop_io))
640 SvREFCNT_dec(PL_compiling.cop_io);
641 PL_compiling.cop_io = Nullsv;
05ec9bb3
NIS
642 CopFILE_free(&PL_compiling);
643 CopSTASH_free(&PL_compiling);
5c831c24 644
a0d0e21e 645 /* Prepare to destruct main symbol table. */
5f05dabc 646
3280af22
NIS
647 hv = PL_defstash;
648 PL_defstash = 0;
a0d0e21e 649 SvREFCNT_dec(hv);
5c831c24
GS
650 SvREFCNT_dec(PL_curstname);
651 PL_curstname = Nullsv;
a0d0e21e 652
5a844595
GS
653 /* clear queued errors */
654 SvREFCNT_dec(PL_errors);
655 PL_errors = Nullsv;
656
a0d0e21e 657 FREETMPS;
0453d815 658 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
3280af22 659 if (PL_scopestack_ix != 0)
9014280d 660 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
0453d815 661 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
3280af22
NIS
662 (long)PL_scopestack_ix);
663 if (PL_savestack_ix != 0)
9014280d 664 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
0453d815 665 "Unbalanced saves: %ld more saves than restores\n",
3280af22
NIS
666 (long)PL_savestack_ix);
667 if (PL_tmps_floor != -1)
9014280d 668 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
3280af22 669 (long)PL_tmps_floor + 1);
a0d0e21e 670 if (cxstack_ix != -1)
9014280d 671 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
ff0cee69 672 (long)cxstack_ix + 1);
a0d0e21e 673 }
8990e307
LW
674
675 /* Now absolutely destruct everything, somehow or other, loops or no. */
d33b2eba 676 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
3280af22 677 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
5226ed68
JH
678
679 /* the 2 is for PL_fdpid and PL_strtab */
680 while (PL_sv_count > 2 && sv_clean_all())
681 ;
682
d33b2eba
GS
683 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
684 SvFLAGS(PL_fdpid) |= SVt_PVAV;
3280af22
NIS
685 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
686 SvFLAGS(PL_strtab) |= SVt_PVHV;
d33b2eba 687
d4777f27
GS
688 AvREAL_off(PL_fdpid); /* no surviving entries */
689 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
d33b2eba
GS
690 PL_fdpid = Nullav;
691
6c644e78
GS
692#ifdef HAVE_INTERP_INTERN
693 sys_intern_clear();
694#endif
695
6e72f9df
PP
696 /* Destruct the global string table. */
697 {
698 /* Yell and reset the HeVAL() slots that are still holding refcounts,
699 * so that sv_free() won't fail on them.
700 */
701 I32 riter;
702 I32 max;
703 HE *hent;
704 HE **array;
705
706 riter = 0;
3280af22
NIS
707 max = HvMAX(PL_strtab);
708 array = HvARRAY(PL_strtab);
6e72f9df
PP
709 hent = array[0];
710 for (;;) {
0453d815 711 if (hent && ckWARN_d(WARN_INTERNAL)) {
9014280d 712 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
0453d815 713 "Unbalanced string table refcount: (%d) for \"%s\"",
6e72f9df
PP
714 HeVAL(hent) - Nullsv, HeKEY(hent));
715 HeVAL(hent) = Nullsv;
716 hent = HeNEXT(hent);
717 }
718 if (!hent) {
719 if (++riter > max)
720 break;
721 hent = array[riter];
722 }
723 }
724 }
3280af22 725 SvREFCNT_dec(PL_strtab);
6e72f9df 726
e652bb2f 727#ifdef USE_ITHREADS
a0739874
DM
728 /* free the pointer table used for cloning */
729 ptr_table_free(PL_ptr_table);
53186e96 730#endif
a0739874 731
d33b2eba
GS
732 /* free special SVs */
733
734 SvREFCNT(&PL_sv_yes) = 0;
735 sv_clear(&PL_sv_yes);
736 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 737 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
738
739 SvREFCNT(&PL_sv_no) = 0;
740 sv_clear(&PL_sv_no);
741 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 742 SvFLAGS(&PL_sv_no) = 0;
01724ea0 743
9f375a43
DM
744 {
745 int i;
746 for (i=0; i<=2; i++) {
747 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
748 sv_clear(PERL_DEBUG_PAD(i));
749 SvANY(PERL_DEBUG_PAD(i)) = NULL;
750 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
751 }
752 }
753
0453d815 754 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 755 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 756
eba0f806
DM
757#ifdef DEBUG_LEAKING_SCALARS
758 if (PL_sv_count != 0) {
759 SV* sva;
760 SV* sv;
761 register SV* svend;
762
763 for (sva = PL_sv_arenaroot; sva; sva = (SV*)SvANY(sva)) {
764 svend = &sva[SvREFCNT(sva)];
765 for (sv = sva + 1; sv < svend; ++sv) {
766 if (SvTYPE(sv) != SVTYPEMASK) {
767 PerlIO_printf(Perl_debug_log, "leaked: 0x%p\n", sv);
768 }
769 }
770 }
771 }
772#endif
773
774
56a2bab7 775#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS
776 /* No more IO - including error messages ! */
777 PerlIO_cleanup(aTHX);
778#endif
779
9f4bd222
NIS
780 /* sv_undef needs to stay immortal until after PerlIO_cleanup
781 as currently layers use it rather than Nullsv as a marker
782 for no arg - and will try and SvREFCNT_dec it.
783 */
784 SvREFCNT(&PL_sv_undef) = 0;
785 SvREADONLY_off(&PL_sv_undef);
786
3280af22 787 Safefree(PL_origfilename);
3280af22 788 Safefree(PL_reg_start_tmp);
5c5e4c24
IZ
789 if (PL_reg_curpm)
790 Safefree(PL_reg_curpm);
82ba1be6 791 Safefree(PL_reg_poscache);
dd28f7bb 792 free_tied_hv_pool();
3280af22 793 Safefree(PL_op_mask);
cf36064f
GS
794 Safefree(PL_psig_ptr);
795 Safefree(PL_psig_name);
2c2666fc 796 Safefree(PL_bitcount);
ce08f86c 797 Safefree(PL_psig_pend);
6e72f9df 798 nuke_stacks();
3280af22 799 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
ac27b0f5 800
a0d0e21e 801 DEBUG_P(debprofdump());
d33b2eba 802
e5dd39fc 803#ifdef USE_REENTRANT_API
10bc17b6 804 Perl_reentrant_free(aTHX);
e5dd39fc
AB
805#endif
806
612f20c3
GS
807 sv_free_arenas();
808
fc36a67e
PP
809 /* As the absolutely last thing, free the non-arena SV for mess() */
810
3280af22 811 if (PL_mess_sv) {
9c63abab
GS
812 /* it could have accumulated taint magic */
813 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
814 MAGIC* mg;
815 MAGIC* moremagic;
816 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
817 moremagic = mg->mg_moremagic;
14befaf4
DM
818 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
819 && mg->mg_len >= 0)
9c63abab
GS
820 Safefree(mg->mg_ptr);
821 Safefree(mg);
822 }
823 }
fc36a67e 824 /* we know that type >= SVt_PV */
155aba94 825 (void)SvOOK_off(PL_mess_sv);
3280af22
NIS
826 Safefree(SvPVX(PL_mess_sv));
827 Safefree(SvANY(PL_mess_sv));
828 Safefree(PL_mess_sv);
829 PL_mess_sv = Nullsv;
fc36a67e 830 }
31d77e54 831 return STATUS_NATIVE_EXPORT;
79072805
LW
832}
833
954c1994
GS
834/*
835=for apidoc perl_free
836
837Releases a Perl interpreter. See L<perlembed>.
838
839=cut
840*/
841
79072805 842void
0cb96387 843perl_free(pTHXx)
79072805 844{
acfe0abc 845#if defined(WIN32) || defined(NETWARE)
ce3e5b80 846# if defined(PERL_IMPLICIT_SYS)
acfe0abc
GS
847# ifdef NETWARE
848 void *host = nw_internal_host;
849# else
850 void *host = w32_internal_host;
851# endif
ce3e5b80 852 PerlMem_free(aTHXx);
acfe0abc 853# ifdef NETWARE
011f1a1a 854 nw_delete_internal_host(host);
acfe0abc
GS
855# else
856 win32_delete_internal_host(host);
857# endif
1c0ca838
GS
858# else
859 PerlMem_free(aTHXx);
860# endif
acfe0abc
GS
861#else
862 PerlMem_free(aTHXx);
76e3520e 863#endif
79072805
LW
864}
865
4b556e6c 866void
864dbfa3 867Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 868{
3280af22
NIS
869 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
870 PL_exitlist[PL_exitlistlen].fn = fn;
871 PL_exitlist[PL_exitlistlen].ptr = ptr;
872 ++PL_exitlistlen;
4b556e6c
JD
873}
874
954c1994
GS
875/*
876=for apidoc perl_parse
877
878Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
879
880=cut
881*/
882
79072805 883int
0cb96387 884perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 885{
6224f72b 886 I32 oldscope;
6224f72b 887 int ret;
db36c5a1 888 dJMPENV;
4d1ff10f 889#ifdef USE_5005THREADS
cea2e8a9
GS
890 dTHX;
891#endif
8d063cd8 892
a687059c
LW
893#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
894#ifdef IAMSUID
895#undef IAMSUID
cea2e8a9 896 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
a687059c
LW
897setuid perl scripts securely.\n");
898#endif
899#endif
900
3280af22 901 PL_origargc = argc;
e2975953 902 PL_origargv = argv;
a0d0e21e 903
3280af22 904 if (PL_do_undump) {
a0d0e21e
LW
905
906 /* Come here if running an undumped a.out. */
907
3280af22
NIS
908 PL_origfilename = savepv(argv[0]);
909 PL_do_undump = FALSE;
a0d0e21e 910 cxstack_ix = -1; /* start label stack again */
748a9306 911 init_ids();
a0d0e21e
LW
912 init_postdump_symbols(argc,argv,env);
913 return 0;
914 }
915
3280af22 916 if (PL_main_root) {
3280af22
NIS
917 op_free(PL_main_root);
918 PL_main_root = Nullop;
ff0cee69 919 }
3280af22
NIS
920 PL_main_start = Nullop;
921 SvREFCNT_dec(PL_main_cv);
922 PL_main_cv = Nullcv;
79072805 923
3280af22
NIS
924 time(&PL_basetime);
925 oldscope = PL_scopestack_ix;
599cee73 926 PL_dowarn = G_WARN_OFF;
f86702cc 927
14dd3ad8
GS
928#ifdef PERL_FLEXIBLE_EXCEPTIONS
929 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
930#else
931 JMPENV_PUSH(ret);
932#endif
6224f72b 933 switch (ret) {
312caa8e 934 case 0:
14dd3ad8
GS
935#ifndef PERL_FLEXIBLE_EXCEPTIONS
936 parse_body(env,xsinit);
937#endif
7d30b5c4
GS
938 if (PL_checkav)
939 call_list(oldscope, PL_checkav);
14dd3ad8
GS
940 ret = 0;
941 break;
6224f72b
GS
942 case 1:
943 STATUS_ALL_FAILURE;
944 /* FALL THROUGH */
945 case 2:
946 /* my_exit() was called */
3280af22 947 while (PL_scopestack_ix > oldscope)
6224f72b
GS
948 LEAVE;
949 FREETMPS;
3280af22 950 PL_curstash = PL_defstash;
7d30b5c4
GS
951 if (PL_checkav)
952 call_list(oldscope, PL_checkav);
14dd3ad8
GS
953 ret = STATUS_NATIVE_EXPORT;
954 break;
6224f72b 955 case 3:
bf49b057 956 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
957 ret = 1;
958 break;
6224f72b 959 }
14dd3ad8
GS
960 JMPENV_POP;
961 return ret;
962}
963
964#ifdef PERL_FLEXIBLE_EXCEPTIONS
965STATIC void *
966S_vparse_body(pTHX_ va_list args)
967{
968 char **env = va_arg(args, char**);
969 XSINIT_t xsinit = va_arg(args, XSINIT_t);
970
971 return parse_body(env, xsinit);
312caa8e 972}
14dd3ad8 973#endif
312caa8e
CS
974
975STATIC void *
14dd3ad8 976S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 977{
312caa8e
CS
978 int argc = PL_origargc;
979 char **argv = PL_origargv;
312caa8e
CS
980 char *scriptname = NULL;
981 int fdscript = -1;
982 VOL bool dosearch = FALSE;
983 char *validarg = "";
312caa8e
CS
984 register SV *sv;
985 register char *s;
cf756827 986 char *cddir = Nullch;
312caa8e 987
3280af22 988 sv_setpvn(PL_linestr,"",0);
79cb57f6 989 sv = newSVpvn("",0); /* first used for -I flags */
6224f72b
GS
990 SAVEFREESV(sv);
991 init_main_stash();
54310121 992
6224f72b
GS
993 for (argc--,argv++; argc > 0; argc--,argv++) {
994 if (argv[0][0] != '-' || !argv[0][1])
995 break;
996#ifdef DOSUID
997 if (*validarg)
998 validarg = " PHOOEY ";
999 else
1000 validarg = argv[0];
13281fa4 1001#endif
6224f72b
GS
1002 s = argv[0]+1;
1003 reswitch:
1004 switch (*s) {
729a02f2 1005 case 'C':
1d5472a9
GS
1006#ifndef PERL_STRICT_CR
1007 case '\r':
1008#endif
6224f72b
GS
1009 case ' ':
1010 case '0':
1011 case 'F':
1012 case 'a':
1013 case 'c':
1014 case 'd':
1015 case 'D':
1016 case 'h':
1017 case 'i':
1018 case 'l':
1019 case 'M':
1020 case 'm':
1021 case 'n':
1022 case 'p':
1023 case 's':
1024 case 'u':
1025 case 'U':
1026 case 'v':
599cee73
PM
1027 case 'W':
1028 case 'X':
6224f72b 1029 case 'w':
06492da6 1030 case 'A':
155aba94 1031 if ((s = moreswitches(s)))
6224f72b
GS
1032 goto reswitch;
1033 break;
33b78306 1034
1dbad523 1035 case 't':
317ea90d
MS
1036 if( !PL_tainting ) {
1037 PL_taint_warn = TRUE;
1038 PL_tainting = TRUE;
1039 }
1040 s++;
1041 goto reswitch;
6224f72b 1042 case 'T':
3280af22 1043 PL_tainting = TRUE;
317ea90d 1044 PL_taint_warn = FALSE;
6224f72b
GS
1045 s++;
1046 goto reswitch;
f86702cc 1047
6224f72b 1048 case 'e':
bf4acbe4
GS
1049#ifdef MACOS_TRADITIONAL
1050 /* ignore -e for Dev:Pseudo argument */
1051 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
e55ac0fa 1052 break;
bf4acbe4 1053#endif
3280af22 1054 if (PL_euid != PL_uid || PL_egid != PL_gid)
cea2e8a9 1055 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
3280af22 1056 if (!PL_e_script) {
79cb57f6 1057 PL_e_script = newSVpvn("",0);
0cb96387 1058 filter_add(read_e_script, NULL);
6224f72b
GS
1059 }
1060 if (*++s)
3280af22 1061 sv_catpv(PL_e_script, s);
6224f72b 1062 else if (argv[1]) {
3280af22 1063 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1064 argc--,argv++;
1065 }
1066 else
cea2e8a9 1067 Perl_croak(aTHX_ "No code specified for -e");
3280af22 1068 sv_catpv(PL_e_script, "\n");
6224f72b 1069 break;
afe37c7d 1070
6224f72b
GS
1071 case 'I': /* -I handled both here and in moreswitches() */
1072 forbid_setid("-I");
1073 if (!*++s && (s=argv[1]) != Nullch) {
1074 argc--,argv++;
1075 }
6224f72b 1076 if (s && *s) {
0df16ed7
GS
1077 char *p;
1078 STRLEN len = strlen(s);
1079 p = savepvn(s, len);
574c798a 1080 incpush(p, TRUE, TRUE, FALSE);
0df16ed7
GS
1081 sv_catpvn(sv, "-I", 2);
1082 sv_catpvn(sv, p, len);
1083 sv_catpvn(sv, " ", 1);
6224f72b 1084 Safefree(p);
0df16ed7
GS
1085 }
1086 else
a67e862a 1087 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b
GS
1088 break;
1089 case 'P':
1090 forbid_setid("-P");
3280af22 1091 PL_preprocess = TRUE;
6224f72b
GS
1092 s++;
1093 goto reswitch;
1094 case 'S':
1095 forbid_setid("-S");
1096 dosearch = TRUE;
1097 s++;
1098 goto reswitch;
1099 case 'V':
3280af22
NIS
1100 if (!PL_preambleav)
1101 PL_preambleav = newAV();
1102 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
6224f72b 1103 if (*++s != ':') {
3280af22 1104 PL_Sv = newSVpv("print myconfig();",0);
6224f72b 1105#ifdef VMS
6b88bc9c 1106 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
6224f72b 1107#else
3280af22 1108 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
6224f72b 1109#endif
3280af22 1110 sv_catpv(PL_Sv,"\" Compile-time options:");
6224f72b 1111# ifdef DEBUGGING
3280af22 1112 sv_catpv(PL_Sv," DEBUGGING");
6224f72b 1113# endif
6224f72b 1114# ifdef MULTIPLICITY
8f872242 1115 sv_catpv(PL_Sv," MULTIPLICITY");
6224f72b 1116# endif
4d1ff10f
AB
1117# ifdef USE_5005THREADS
1118 sv_catpv(PL_Sv," USE_5005THREADS");
b363f7ed 1119# endif
ac5e8965
JH
1120# ifdef USE_ITHREADS
1121 sv_catpv(PL_Sv," USE_ITHREADS");
1122# endif
10cc9d2a
JH
1123# ifdef USE_64_BIT_INT
1124 sv_catpv(PL_Sv," USE_64_BIT_INT");
1125# endif
1126# ifdef USE_64_BIT_ALL
1127 sv_catpv(PL_Sv," USE_64_BIT_ALL");
ac5e8965
JH
1128# endif
1129# ifdef USE_LONG_DOUBLE
1130 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1131# endif
53430762
JH
1132# ifdef USE_LARGE_FILES
1133 sv_catpv(PL_Sv," USE_LARGE_FILES");
1134# endif
ac5e8965
JH
1135# ifdef USE_SOCKS
1136 sv_catpv(PL_Sv," USE_SOCKS");
1137# endif
b363f7ed
GS
1138# ifdef PERL_IMPLICIT_CONTEXT
1139 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1140# endif
1141# ifdef PERL_IMPLICIT_SYS
1142 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1143# endif
3280af22 1144 sv_catpv(PL_Sv,"\\n\",");
b363f7ed 1145
6224f72b
GS
1146#if defined(LOCAL_PATCH_COUNT)
1147 if (LOCAL_PATCH_COUNT > 0) {
1148 int i;
3280af22 1149 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
6224f72b 1150 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
3280af22 1151 if (PL_localpatches[i])
cea2e8a9 1152 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
6224f72b
GS
1153 }
1154 }
1155#endif
cea2e8a9 1156 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
6224f72b
GS
1157#ifdef __DATE__
1158# ifdef __TIME__
cea2e8a9 1159 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
6224f72b 1160# else
cea2e8a9 1161 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
6224f72b
GS
1162# endif
1163#endif
3280af22 1164 sv_catpv(PL_Sv, "; \
6224f72b 1165$\"=\"\\n \"; \
69fcd688
JH
1166@env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; ");
1167#ifdef __CYGWIN__
1168 sv_catpv(PL_Sv,"\
1169push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
1170#endif
1171 sv_catpv(PL_Sv, "\
6224f72b
GS
1172print \" \\%ENV:\\n @env\\n\" if @env; \
1173print \" \\@INC:\\n @INC\\n\";");
1174 }
1175 else {
3280af22
NIS
1176 PL_Sv = newSVpv("config_vars(qw(",0);
1177 sv_catpv(PL_Sv, ++s);
1178 sv_catpv(PL_Sv, "))");
6224f72b
GS
1179 s += strlen(s);
1180 }
3280af22 1181 av_push(PL_preambleav, PL_Sv);
6224f72b
GS
1182 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1183 goto reswitch;
1184 case 'x':
3280af22 1185 PL_doextract = TRUE;
6224f72b
GS
1186 s++;
1187 if (*s)
f4c556ac 1188 cddir = s;
6224f72b
GS
1189 break;
1190 case 0:
1191 break;
1192 case '-':
1193 if (!*++s || isSPACE(*s)) {
1194 argc--,argv++;
1195 goto switch_end;
1196 }
1197 /* catch use of gnu style long options */
1198 if (strEQ(s, "version")) {
1199 s = "v";
1200 goto reswitch;
1201 }
1202 if (strEQ(s, "help")) {
1203 s = "h";
1204 goto reswitch;
1205 }
1206 s--;
1207 /* FALL THROUGH */
1208 default:
cea2e8a9 1209 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
1210 }
1211 }
6224f72b 1212 switch_end:
7f9e821f 1213 sv_setsv(get_sv("/", TRUE), PL_rs);
54310121 1214
f675dbe5
CB
1215 if (
1216#ifndef SECURE_INTERNAL_GETENV
1217 !PL_tainting &&
1218#endif
cf756827 1219 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1220 {
cf756827 1221 char *popt = s;
74288ac8
GS
1222 while (isSPACE(*s))
1223 s++;
317ea90d 1224 if (*s == '-' && *(s+1) == 'T') {
74288ac8 1225 PL_tainting = TRUE;
317ea90d
MS
1226 PL_taint_warn = FALSE;
1227 }
74288ac8 1228 else {
cf756827 1229 char *popt_copy = Nullch;
74288ac8 1230 while (s && *s) {
4ea8f8fb 1231 char *d;
74288ac8
GS
1232 while (isSPACE(*s))
1233 s++;
1234 if (*s == '-') {
1235 s++;
1236 if (isSPACE(*s))
1237 continue;
1238 }
4ea8f8fb 1239 d = s;
74288ac8
GS
1240 if (!*s)
1241 break;
06492da6 1242 if (!strchr("DIMUdmtwA", *s))
cea2e8a9 1243 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
1244 while (++s && *s) {
1245 if (isSPACE(*s)) {
cf756827
GS
1246 if (!popt_copy) {
1247 popt_copy = SvPVX(sv_2mortal(newSVpv(popt,0)));
1248 s = popt_copy + (s - popt);
1249 d = popt_copy + (d - popt);
1250 }
4ea8f8fb
MS
1251 *s++ = '\0';
1252 break;
1253 }
1254 }
1c4db469 1255 if (*d == 't') {
317ea90d
MS
1256 if( !PL_tainting ) {
1257 PL_taint_warn = TRUE;
1258 PL_tainting = TRUE;
1259 }
1c4db469
RGS
1260 } else {
1261 moreswitches(d);
1262 }
6224f72b 1263 }
6224f72b
GS
1264 }
1265 }
a0d0e21e 1266
317ea90d
MS
1267 if (PL_taint_warn && PL_dowarn != G_WARN_ALL_OFF) {
1268 PL_compiling.cop_warnings = newSVpvn(WARN_TAINTstring, WARNsize);
1269 }
1270
6224f72b
GS
1271 if (!scriptname)
1272 scriptname = argv[0];
3280af22 1273 if (PL_e_script) {
6224f72b
GS
1274 argc++,argv--;
1275 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1276 }
1277 else if (scriptname == Nullch) {
1278#ifdef MSDOS
1279 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1280 moreswitches("h");
1281#endif
1282 scriptname = "-";
1283 }
1284
1285 init_perllib();
1286
1287 open_script(scriptname,dosearch,sv,&fdscript);
1288
1289 validate_suid(validarg, scriptname,fdscript);
1290
64ca3a65 1291#ifndef PERL_MICRO
0b5b802d
GS
1292#if defined(SIGCHLD) || defined(SIGCLD)
1293 {
1294#ifndef SIGCHLD
1295# define SIGCHLD SIGCLD
1296#endif
1297 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1298 if (sigstate == SIG_IGN) {
1299 if (ckWARN(WARN_SIGNAL))
9014280d 1300 Perl_warner(aTHX_ packWARN(WARN_SIGNAL),
0b5b802d
GS
1301 "Can't ignore signal CHLD, forcing to default");
1302 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1303 }
1304 }
1305#endif
64ca3a65 1306#endif
0b5b802d 1307
bf4acbe4
GS
1308#ifdef MACOS_TRADITIONAL
1309 if (PL_doextract || gMacPerl_AlwaysExtract) {
1310#else
f4c556ac 1311 if (PL_doextract) {
bf4acbe4 1312#endif
6224f72b 1313 find_beginning();
f4c556ac
GS
1314 if (cddir && PerlDir_chdir(cddir) < 0)
1315 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1316
1317 }
6224f72b 1318
3280af22
NIS
1319 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1320 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1321 CvUNIQUE_on(PL_compcv);
1322
dd2155a4 1323 CvPADLIST(PL_compcv) = pad_new(0);
4d1ff10f 1324#ifdef USE_5005THREADS
533c011a
NIS
1325 CvOWNER(PL_compcv) = 0;
1326 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1327 MUTEX_INIT(CvMUTEXP(PL_compcv));
4d1ff10f 1328#endif /* USE_5005THREADS */
6224f72b 1329
0c4f7ff0 1330 boot_core_PerlIO();
6224f72b 1331 boot_core_UNIVERSAL();
9a34ef1d 1332#ifndef PERL_MICRO
09bef843 1333 boot_core_xsutils();
9a34ef1d 1334#endif
6224f72b
GS
1335
1336 if (xsinit)
acfe0abc 1337 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 1338#ifndef PERL_MICRO
ed79a026 1339#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
c5be433b 1340 init_os_extras();
6224f72b 1341#endif
64ca3a65 1342#endif
6224f72b 1343
29209bc5 1344#ifdef USE_SOCKS
1b9c9cf5
DH
1345# ifdef HAS_SOCKS5_INIT
1346 socks5_init(argv[0]);
1347# else
29209bc5 1348 SOCKSinit(argv[0]);
1b9c9cf5 1349# endif
ac27b0f5 1350#endif
29209bc5 1351
6224f72b
GS
1352 init_predump_symbols();
1353 /* init_postdump_symbols not currently designed to be called */
1354 /* more than once (ENV isn't cleared first, for example) */
1355 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 1356 if (!PL_do_undump)
6224f72b
GS
1357 init_postdump_symbols(argc,argv,env);
1358
a05d7ebb
JH
1359 /* PL_unicode is turned on by -C or by $ENV{PERL_UNICODE}.
1360 * PL_utf8locale is conditionally turned on by
085a54d9 1361 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 1362 * look like the user wants to use UTF-8. */
06e66572
JH
1363 if (PL_unicode) {
1364 /* Requires init_predump_symbols(). */
a05d7ebb 1365 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
1366 IO* io;
1367 PerlIO* fp;
1368 SV* sv;
1369
a05d7ebb 1370 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 1371 * and the default open disciplines. */
a05d7ebb
JH
1372 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
1373 PL_stdingv && (io = GvIO(PL_stdingv)) &&
1374 (fp = IoIFP(io)))
1375 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
1376 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
1377 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
1378 (fp = IoOFP(io)))
1379 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
1380 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
1381 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
1382 (fp = IoOFP(io)))
1383 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
1384 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
1385 (sv = GvSV(gv_fetchpv("\017PEN", TRUE, SVt_PV)))) {
1386 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
1387 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
1388 if (in) {
1389 if (out)
1390 sv_setpvn(sv, ":utf8\0:utf8", 11);
1391 else
1392 sv_setpvn(sv, ":utf8\0", 6);
1393 }
1394 else if (out)
1395 sv_setpvn(sv, "\0:utf8", 6);
1396 SvSETMAGIC(sv);
1397 }
b310b053
JH
1398 }
1399 }
1400
4ffa73a3
JH
1401 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
1402 if (strEQ(s, "unsafe"))
1403 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
1404 else if (strEQ(s, "safe"))
1405 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
1406 else
1407 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
1408 }
1409
6224f72b
GS
1410 init_lexer();
1411
1412 /* now parse the script */
1413
93189314 1414 SETERRNO(0,SS_NORMAL);
3280af22 1415 PL_error_count = 0;
bf4acbe4
GS
1416#ifdef MACOS_TRADITIONAL
1417 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1418 if (PL_minus_c)
1419 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1420 else {
1421 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1422 MacPerl_MPWFileName(PL_origfilename));
1423 }
1424 }
1425#else
3280af22
NIS
1426 if (yyparse() || PL_error_count) {
1427 if (PL_minus_c)
cea2e8a9 1428 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 1429 else {
cea2e8a9 1430 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 1431 PL_origfilename);
6224f72b
GS
1432 }
1433 }
bf4acbe4 1434#endif
57843af0 1435 CopLINE_set(PL_curcop, 0);
3280af22
NIS
1436 PL_curstash = PL_defstash;
1437 PL_preprocess = FALSE;
1438 if (PL_e_script) {
1439 SvREFCNT_dec(PL_e_script);
1440 PL_e_script = Nullsv;
6224f72b
GS
1441 }
1442
3280af22 1443 if (PL_do_undump)
6224f72b
GS
1444 my_unexec();
1445
57843af0
GS
1446 if (isWARN_ONCE) {
1447 SAVECOPFILE(PL_curcop);
1448 SAVECOPLINE(PL_curcop);
3280af22 1449 gv_check(PL_defstash);
57843af0 1450 }
6224f72b
GS
1451
1452 LEAVE;
1453 FREETMPS;
1454
1455#ifdef MYMALLOC
1456 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1457 dump_mstats("after compilation:");
1458#endif
1459
1460 ENTER;
3280af22 1461 PL_restartop = 0;
312caa8e 1462 return NULL;
6224f72b
GS
1463}
1464
954c1994
GS
1465/*
1466=for apidoc perl_run
1467
1468Tells a Perl interpreter to run. See L<perlembed>.
1469
1470=cut
1471*/
1472
6224f72b 1473int
0cb96387 1474perl_run(pTHXx)
6224f72b 1475{
6224f72b 1476 I32 oldscope;
14dd3ad8 1477 int ret = 0;
db36c5a1 1478 dJMPENV;
4d1ff10f 1479#ifdef USE_5005THREADS
cea2e8a9
GS
1480 dTHX;
1481#endif
6224f72b 1482
3280af22 1483 oldscope = PL_scopestack_ix;
96e176bf
CL
1484#ifdef VMS
1485 VMSISH_HUSHED = 0;
1486#endif
6224f72b 1487
14dd3ad8 1488#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1489 redo_body:
14dd3ad8
GS
1490 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1491#else
1492 JMPENV_PUSH(ret);
1493#endif
6224f72b
GS
1494 switch (ret) {
1495 case 1:
1496 cxstack_ix = -1; /* start context stack again */
312caa8e 1497 goto redo_body;
14dd3ad8
GS
1498 case 0: /* normal completion */
1499#ifndef PERL_FLEXIBLE_EXCEPTIONS
1500 redo_body:
1501 run_body(oldscope);
1502#endif
1503 /* FALL THROUGH */
1504 case 2: /* my_exit() */
3280af22 1505 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1506 LEAVE;
1507 FREETMPS;
3280af22 1508 PL_curstash = PL_defstash;
3a1ee7e8 1509 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
31d77e54
AB
1510 PL_endav && !PL_minus_c)
1511 call_list(oldscope, PL_endav);
6224f72b
GS
1512#ifdef MYMALLOC
1513 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1514 dump_mstats("after execution: ");
1515#endif
14dd3ad8
GS
1516 ret = STATUS_NATIVE_EXPORT;
1517 break;
6224f72b 1518 case 3:
312caa8e
CS
1519 if (PL_restartop) {
1520 POPSTACK_TO(PL_mainstack);
1521 goto redo_body;
6224f72b 1522 }
bf49b057 1523 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 1524 FREETMPS;
14dd3ad8
GS
1525 ret = 1;
1526 break;
6224f72b
GS
1527 }
1528
14dd3ad8
GS
1529 JMPENV_POP;
1530 return ret;
312caa8e
CS
1531}
1532
14dd3ad8 1533#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1534STATIC void *
14dd3ad8 1535S_vrun_body(pTHX_ va_list args)
312caa8e 1536{
312caa8e
CS
1537 I32 oldscope = va_arg(args, I32);
1538
14dd3ad8
GS
1539 return run_body(oldscope);
1540}
1541#endif
1542
1543
1544STATIC void *
1545S_run_body(pTHX_ I32 oldscope)
1546{
6224f72b 1547 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 1548 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 1549
3280af22 1550 if (!PL_restartop) {
6224f72b
GS
1551 DEBUG_x(dump_all());
1552 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
b900a521
JH
1553 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1554 PTR2UV(thr)));
6224f72b 1555
3280af22 1556 if (PL_minus_c) {
bf4acbe4 1557#ifdef MACOS_TRADITIONAL
e69a2255
JH
1558 PerlIO_printf(Perl_error_log, "%s%s syntax OK\n",
1559 (gMacPerl_ErrorFormat ? "# " : ""),
1560 MacPerl_MPWFileName(PL_origfilename));
bf4acbe4 1561#else
bf49b057 1562 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
bf4acbe4 1563#endif
6224f72b
GS
1564 my_exit(0);
1565 }
3280af22 1566 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 1567 sv_setiv(PL_DBsingle, 1);
3280af22
NIS
1568 if (PL_initav)
1569 call_list(oldscope, PL_initav);
6224f72b
GS
1570 }
1571
1572 /* do it */
1573
3280af22 1574 if (PL_restartop) {
533c011a 1575 PL_op = PL_restartop;
3280af22 1576 PL_restartop = 0;
cea2e8a9 1577 CALLRUNOPS(aTHX);
6224f72b 1578 }
3280af22
NIS
1579 else if (PL_main_start) {
1580 CvDEPTH(PL_main_cv) = 1;
533c011a 1581 PL_op = PL_main_start;
cea2e8a9 1582 CALLRUNOPS(aTHX);
6224f72b
GS
1583 }
1584
f6b3007c
JH
1585 my_exit(0);
1586 /* NOTREACHED */
312caa8e 1587 return NULL;
6224f72b
GS
1588}
1589
954c1994 1590/*
ccfc67b7
JH
1591=head1 SV Manipulation Functions
1592
954c1994
GS
1593=for apidoc p||get_sv
1594
1595Returns the SV of the specified Perl scalar. If C<create> is set and the
1596Perl variable does not exist then it will be created. If C<create> is not
1597set and the variable does not exist then NULL is returned.
1598
1599=cut
1600*/
1601
6224f72b 1602SV*
864dbfa3 1603Perl_get_sv(pTHX_ const char *name, I32 create)
6224f72b
GS
1604{
1605 GV *gv;
4d1ff10f 1606#ifdef USE_5005THREADS
6224f72b
GS
1607 if (name[1] == '\0' && !isALPHA(name[0])) {
1608 PADOFFSET tmp = find_threadsv(name);
411caa50 1609 if (tmp != NOT_IN_PAD)
6224f72b 1610 return THREADSV(tmp);
6224f72b 1611 }
4d1ff10f 1612#endif /* USE_5005THREADS */
6224f72b
GS
1613 gv = gv_fetchpv(name, create, SVt_PV);
1614 if (gv)
1615 return GvSV(gv);
1616 return Nullsv;
1617}
1618
954c1994 1619/*
ccfc67b7
JH
1620=head1 Array Manipulation Functions
1621
954c1994
GS
1622=for apidoc p||get_av
1623
1624Returns the AV of the specified Perl array. If C<create> is set and the
1625Perl variable does not exist then it will be created. If C<create> is not
1626set and the variable does not exist then NULL is returned.
1627
1628=cut
1629*/
1630
6224f72b 1631AV*
864dbfa3 1632Perl_get_av(pTHX_ const char *name, I32 create)
6224f72b
GS
1633{
1634 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1635 if (create)
1636 return GvAVn(gv);
1637 if (gv)
1638 return GvAV(gv);
1639 return Nullav;
1640}
1641
954c1994 1642/*
ccfc67b7
JH
1643=head1 Hash Manipulation Functions
1644
954c1994
GS
1645=for apidoc p||get_hv
1646
1647Returns the HV of the specified Perl hash. If C<create> is set and the
1648Perl variable does not exist then it will be created. If C<create> is not
1649set and the variable does not exist then NULL is returned.
1650
1651=cut
1652*/
1653
6224f72b 1654HV*
864dbfa3 1655Perl_get_hv(pTHX_ const char *name, I32 create)
6224f72b 1656{
a0d0e21e
LW
1657 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1658 if (create)
1659 return GvHVn(gv);
1660 if (gv)
1661 return GvHV(gv);
1662 return Nullhv;
1663}
1664
954c1994 1665/*
ccfc67b7
JH
1666=head1 CV Manipulation Functions
1667
954c1994
GS
1668=for apidoc p||get_cv
1669
1670Returns the CV of the specified Perl subroutine. If C<create> is set and
1671the Perl subroutine does not exist then it will be declared (which has the
1672same effect as saying C<sub name;>). If C<create> is not set and the
1673subroutine does not exist then NULL is returned.
1674
1675=cut
1676*/
1677
a0d0e21e 1678CV*
864dbfa3 1679Perl_get_cv(pTHX_ const char *name, I32 create)
a0d0e21e
LW
1680{
1681 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
b099ddc0 1682 /* XXX unsafe for threads if eval_owner isn't held */
f6ec51f7
GS
1683 /* XXX this is probably not what they think they're getting.
1684 * It has the same effect as "sub name;", i.e. just a forward
1685 * declaration! */
8ebc5c01 1686 if (create && !GvCVu(gv))
774d564b 1687 return newSUB(start_subparse(FALSE, 0),
a0d0e21e 1688 newSVOP(OP_CONST, 0, newSVpv(name,0)),
4633a7c4 1689 Nullop,
a0d0e21e
LW
1690 Nullop);
1691 if (gv)
8ebc5c01 1692 return GvCVu(gv);
a0d0e21e
LW
1693 return Nullcv;
1694}
1695
79072805
LW
1696/* Be sure to refetch the stack pointer after calling these routines. */
1697
954c1994 1698/*
ccfc67b7
JH
1699
1700=head1 Callback Functions
1701
954c1994
GS
1702=for apidoc p||call_argv
1703
1704Performs a callback to the specified Perl sub. See L<perlcall>.
1705
1706=cut
1707*/
1708
a0d0e21e 1709I32
864dbfa3 1710Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 1711
8ac85365
NIS
1712 /* See G_* flags in cop.h */
1713 /* null terminated arg list */
8990e307 1714{
a0d0e21e 1715 dSP;
8990e307 1716
924508f0 1717 PUSHMARK(SP);
a0d0e21e 1718 if (argv) {
8990e307 1719 while (*argv) {
a0d0e21e 1720 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
8990e307
LW
1721 argv++;
1722 }
a0d0e21e 1723 PUTBACK;
8990e307 1724 }
864dbfa3 1725 return call_pv(sub_name, flags);
8990e307
LW
1726}
1727
954c1994
GS
1728/*
1729=for apidoc p||call_pv
1730
1731Performs a callback to the specified Perl sub. See L<perlcall>.
1732
1733=cut
1734*/
1735
a0d0e21e 1736I32
864dbfa3 1737Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
1738 /* name of the subroutine */
1739 /* See G_* flags in cop.h */
a0d0e21e 1740{
864dbfa3 1741 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
a0d0e21e
LW
1742}
1743
954c1994
GS
1744/*
1745=for apidoc p||call_method
1746
1747Performs a callback to the specified Perl method. The blessed object must
1748be on the stack. See L<perlcall>.
1749
1750=cut
1751*/
1752
a0d0e21e 1753I32
864dbfa3 1754Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
1755 /* name of the subroutine */
1756 /* See G_* flags in cop.h */
a0d0e21e 1757{
968b3946 1758 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
a0d0e21e
LW
1759}
1760
1761/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
1762/*
1763=for apidoc p||call_sv
1764
1765Performs a callback to the Perl sub whose name is in the SV. See
1766L<perlcall>.
1767
1768=cut
1769*/
1770
a0d0e21e 1771I32
864dbfa3 1772Perl_call_sv(pTHX_ SV *sv, I32 flags)
8ac85365 1773 /* See G_* flags in cop.h */
a0d0e21e 1774{
924508f0 1775 dSP;
a0d0e21e 1776 LOGOP myop; /* fake syntax tree node */
968b3946 1777 UNOP method_op;
aa689395 1778 I32 oldmark;
13689cfe 1779 volatile I32 retval = 0;
a0d0e21e 1780 I32 oldscope;
54310121 1781 bool oldcatch = CATCH_GET;
6224f72b 1782 int ret;
533c011a 1783 OP* oldop = PL_op;
db36c5a1 1784 dJMPENV;
1e422769 1785
a0d0e21e
LW
1786 if (flags & G_DISCARD) {
1787 ENTER;
1788 SAVETMPS;
1789 }
1790
aa689395 1791 Zero(&myop, 1, LOGOP);
54310121 1792 myop.op_next = Nullop;
f51d4af5 1793 if (!(flags & G_NOARGS))
aa689395 1794 myop.op_flags |= OPf_STACKED;
54310121
PP
1795 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1796 (flags & G_ARRAY) ? OPf_WANT_LIST :
1797 OPf_WANT_SCALAR);
462e5cf6 1798 SAVEOP();
533c011a 1799 PL_op = (OP*)&myop;
aa689395 1800
3280af22
NIS
1801 EXTEND(PL_stack_sp, 1);
1802 *++PL_stack_sp = sv;
aa689395 1803 oldmark = TOPMARK;
3280af22 1804 oldscope = PL_scopestack_ix;
a0d0e21e 1805
3280af22 1806 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 1807 /* Handle first BEGIN of -d. */
3280af22 1808 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
1809 /* Try harder, since this may have been a sighandler, thus
1810 * curstash may be meaningless. */
3280af22 1811 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
491527d0 1812 && !(flags & G_NODEBUG))
533c011a 1813 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 1814
968b3946
GS
1815 if (flags & G_METHOD) {
1816 Zero(&method_op, 1, UNOP);
1817 method_op.op_next = PL_op;
1818 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1819 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
f39d0b86 1820 PL_op = (OP*)&method_op;
968b3946
GS
1821 }
1822
312caa8e 1823 if (!(flags & G_EVAL)) {
0cdb2077 1824 CATCH_SET(TRUE);
14dd3ad8 1825 call_body((OP*)&myop, FALSE);
312caa8e 1826 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 1827 CATCH_SET(oldcatch);
312caa8e
CS
1828 }
1829 else {
d78bda3d 1830 myop.op_other = (OP*)&myop;
3280af22 1831 PL_markstack_ptr--;
4633a7c4
LW
1832 /* we're trying to emulate pp_entertry() here */
1833 {
c09156bb 1834 register PERL_CONTEXT *cx;
54310121 1835 I32 gimme = GIMME_V;
ac27b0f5 1836
4633a7c4
LW
1837 ENTER;
1838 SAVETMPS;
ac27b0f5 1839
968b3946 1840 push_return(Nullop);
1d76a5c3 1841 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
4633a7c4 1842 PUSHEVAL(cx, 0, 0);
533c011a 1843 PL_eval_root = PL_op; /* Only needed so that goto works right. */
ac27b0f5 1844
faef0170 1845 PL_in_eval = EVAL_INEVAL;
4633a7c4 1846 if (flags & G_KEEPERR)
faef0170 1847 PL_in_eval |= EVAL_KEEPERR;
4633a7c4 1848 else
38a03e6e 1849 sv_setpv(ERRSV,"");
4633a7c4 1850 }
3280af22 1851 PL_markstack_ptr++;
a0d0e21e 1852
14dd3ad8
GS
1853#ifdef PERL_FLEXIBLE_EXCEPTIONS
1854 redo_body:
1855 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
db36c5a1 1856 (OP*)&myop, FALSE);
14dd3ad8
GS
1857#else
1858 JMPENV_PUSH(ret);
1859#endif
6224f72b
GS
1860 switch (ret) {
1861 case 0:
14dd3ad8
GS
1862#ifndef PERL_FLEXIBLE_EXCEPTIONS
1863 redo_body:
1864 call_body((OP*)&myop, FALSE);
1865#endif
312caa8e
CS
1866 retval = PL_stack_sp - (PL_stack_base + oldmark);
1867 if (!(flags & G_KEEPERR))
1868 sv_setpv(ERRSV,"");
a0d0e21e 1869 break;
6224f72b 1870 case 1:
f86702cc 1871 STATUS_ALL_FAILURE;
a0d0e21e 1872 /* FALL THROUGH */
6224f72b 1873 case 2:
a0d0e21e 1874 /* my_exit() was called */
3280af22 1875 PL_curstash = PL_defstash;
a0d0e21e 1876 FREETMPS;
14dd3ad8 1877 JMPENV_POP;
cc3604b1 1878 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 1879 Perl_croak(aTHX_ "Callback called exit");
f86702cc 1880 my_exit_jump();
a0d0e21e 1881 /* NOTREACHED */
6224f72b 1882 case 3:
3280af22 1883 if (PL_restartop) {
533c011a 1884 PL_op = PL_restartop;
3280af22 1885 PL_restartop = 0;
312caa8e 1886 goto redo_body;
a0d0e21e 1887 }
3280af22 1888 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
1889 if (flags & G_ARRAY)
1890 retval = 0;
1891 else {
1892 retval = 1;
3280af22 1893 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 1894 }
312caa8e 1895 break;
a0d0e21e 1896 }
a0d0e21e 1897
3280af22 1898 if (PL_scopestack_ix > oldscope) {
a0a2876f
LW
1899 SV **newsp;
1900 PMOP *newpm;
1901 I32 gimme;
c09156bb 1902 register PERL_CONTEXT *cx;
a0a2876f
LW
1903 I32 optype;
1904
1905 POPBLOCK(cx,newpm);
1906 POPEVAL(cx);
1907 pop_return();
3280af22 1908 PL_curpm = newpm;
a0a2876f 1909 LEAVE;
a0d0e21e 1910 }
14dd3ad8 1911 JMPENV_POP;
a0d0e21e 1912 }
1e422769 1913
a0d0e21e 1914 if (flags & G_DISCARD) {
3280af22 1915 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
1916 retval = 0;
1917 FREETMPS;
1918 LEAVE;
1919 }
533c011a 1920 PL_op = oldop;
a0d0e21e
LW
1921 return retval;
1922}
1923
14dd3ad8 1924#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1925STATIC void *
14dd3ad8 1926S_vcall_body(pTHX_ va_list args)
312caa8e
CS
1927{
1928 OP *myop = va_arg(args, OP*);
1929 int is_eval = va_arg(args, int);
1930
14dd3ad8 1931 call_body(myop, is_eval);
312caa8e
CS
1932 return NULL;
1933}
14dd3ad8 1934#endif
312caa8e
CS
1935
1936STATIC void
14dd3ad8 1937S_call_body(pTHX_ OP *myop, int is_eval)
312caa8e 1938{
312caa8e
CS
1939 if (PL_op == myop) {
1940 if (is_eval)
f807eda9 1941 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
312caa8e 1942 else
f807eda9 1943 PL_op = Perl_pp_entersub(aTHX); /* this does */
312caa8e
CS
1944 }
1945 if (PL_op)
cea2e8a9 1946 CALLRUNOPS(aTHX);
312caa8e
CS
1947}
1948
6e72f9df 1949/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 1950
954c1994
GS
1951/*
1952=for apidoc p||eval_sv
1953
1954Tells Perl to C<eval> the string in the SV.
1955
1956=cut
1957*/
1958
a0d0e21e 1959I32
864dbfa3 1960Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 1961
8ac85365 1962 /* See G_* flags in cop.h */
a0d0e21e 1963{
924508f0 1964 dSP;
a0d0e21e 1965 UNOP myop; /* fake syntax tree node */
8fa7f367 1966 volatile I32 oldmark = SP - PL_stack_base;
13689cfe 1967 volatile I32 retval = 0;
4633a7c4 1968 I32 oldscope;
6224f72b 1969 int ret;
533c011a 1970 OP* oldop = PL_op;
db36c5a1 1971 dJMPENV;
84902520 1972
4633a7c4
LW
1973 if (flags & G_DISCARD) {
1974 ENTER;
1975 SAVETMPS;
1976 }
1977
462e5cf6 1978 SAVEOP();
533c011a
NIS
1979 PL_op = (OP*)&myop;
1980 Zero(PL_op, 1, UNOP);
3280af22
NIS
1981 EXTEND(PL_stack_sp, 1);
1982 *++PL_stack_sp = sv;
1983 oldscope = PL_scopestack_ix;
79072805 1984
4633a7c4
LW
1985 if (!(flags & G_NOARGS))
1986 myop.op_flags = OPf_STACKED;
79072805 1987 myop.op_next = Nullop;
6e72f9df 1988 myop.op_type = OP_ENTEREVAL;
54310121
PP
1989 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1990 (flags & G_ARRAY) ? OPf_WANT_LIST :
1991 OPf_WANT_SCALAR);
6e72f9df
PP
1992 if (flags & G_KEEPERR)
1993 myop.op_flags |= OPf_SPECIAL;
4633a7c4 1994
14dd3ad8 1995#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1996 redo_body:
14dd3ad8 1997 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
db36c5a1 1998 (OP*)&myop, TRUE);
14dd3ad8
GS
1999#else
2000 JMPENV_PUSH(ret);
2001#endif
6224f72b
GS
2002 switch (ret) {
2003 case 0:
14dd3ad8
GS
2004#ifndef PERL_FLEXIBLE_EXCEPTIONS
2005 redo_body:
2006 call_body((OP*)&myop,TRUE);
2007#endif
312caa8e
CS
2008 retval = PL_stack_sp - (PL_stack_base + oldmark);
2009 if (!(flags & G_KEEPERR))
2010 sv_setpv(ERRSV,"");
4633a7c4 2011 break;
6224f72b 2012 case 1:
f86702cc 2013 STATUS_ALL_FAILURE;
4633a7c4 2014 /* FALL THROUGH */
6224f72b 2015 case 2:
4633a7c4 2016 /* my_exit() was called */
3280af22 2017 PL_curstash = PL_defstash;
4633a7c4 2018 FREETMPS;
14dd3ad8 2019 JMPENV_POP;
cc3604b1 2020 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2021 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2022 my_exit_jump();
4633a7c4 2023 /* NOTREACHED */
6224f72b 2024 case 3:
3280af22 2025 if (PL_restartop) {
533c011a 2026 PL_op = PL_restartop;
3280af22 2027 PL_restartop = 0;
312caa8e 2028 goto redo_body;
4633a7c4 2029 }
3280af22 2030 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2031 if (flags & G_ARRAY)
2032 retval = 0;
2033 else {
2034 retval = 1;
3280af22 2035 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2036 }
312caa8e 2037 break;
4633a7c4
LW
2038 }
2039
14dd3ad8 2040 JMPENV_POP;
4633a7c4 2041 if (flags & G_DISCARD) {
3280af22 2042 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2043 retval = 0;
2044 FREETMPS;
2045 LEAVE;
2046 }
533c011a 2047 PL_op = oldop;
4633a7c4
LW
2048 return retval;
2049}
2050
954c1994
GS
2051/*
2052=for apidoc p||eval_pv
2053
2054Tells Perl to C<eval> the given string and return an SV* result.
2055
2056=cut
2057*/
2058
137443ea 2059SV*
864dbfa3 2060Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea
PP
2061{
2062 dSP;
2063 SV* sv = newSVpv(p, 0);
2064
864dbfa3 2065 eval_sv(sv, G_SCALAR);
137443ea
PP
2066 SvREFCNT_dec(sv);
2067
2068 SPAGAIN;
2069 sv = POPs;
2070 PUTBACK;
2071
2d8e6c8d
GS
2072 if (croak_on_error && SvTRUE(ERRSV)) {
2073 STRLEN n_a;
cea2e8a9 2074 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
2d8e6c8d 2075 }
137443ea
PP
2076
2077 return sv;
2078}
2079
4633a7c4
LW
2080/* Require a module. */
2081
954c1994 2082/*
ccfc67b7
JH
2083=head1 Embedding Functions
2084
954c1994
GS
2085=for apidoc p||require_pv
2086
7d3fb230
BS
2087Tells Perl to C<require> the file named by the string argument. It is
2088analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2089implemented that way; consider using load_module instead.
954c1994 2090
7d3fb230 2091=cut */
954c1994 2092
4633a7c4 2093void
864dbfa3 2094Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2095{
d3acc0f7
JP
2096 SV* sv;
2097 dSP;
e788e7d3 2098 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7
JP
2099 PUTBACK;
2100 sv = sv_newmortal();
4633a7c4
LW
2101 sv_setpv(sv, "require '");
2102 sv_catpv(sv, pv);
2103 sv_catpv(sv, "'");
864dbfa3 2104 eval_sv(sv, G_DISCARD);
d3acc0f7
JP
2105 SPAGAIN;
2106 POPSTACK;
79072805
LW
2107}
2108
79072805 2109void
864dbfa3 2110Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
79072805
LW
2111{
2112 register GV *gv;
2113
155aba94 2114 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
14befaf4 2115 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
79072805
LW
2116}
2117
76e3520e 2118STATIC void
cea2e8a9 2119S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
4633a7c4 2120{
ab821d7f 2121 /* This message really ought to be max 23 lines.
75c72d73 2122 * Removed -h because the user already knows that option. Others? */
fb73857a 2123
76e3520e 2124 static char *usage_msg[] = {
fb73857a
PP
2125"-0[octal] specify record separator (\\0, if no argument)",
2126"-a autosplit mode with -n or -p (splits $_ into @F)",
46487f74 2127"-C enable native wide character system interfaces",
1950ee41 2128"-c check syntax only (runs BEGIN and CHECK blocks)",
aac3bd0d
GS
2129"-d[:debugger] run program under debugger",
2130"-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2131"-e 'command' one line of program (several -e's allowed, omit programfile)",
2132"-F/pattern/ split() pattern for -a switch (//'s are optional)",
2133"-i[extension] edit <> files in place (makes backup if extension supplied)",
2134"-Idirectory specify @INC/#include directory (several -I's allowed)",
fb73857a 2135"-l[octal] enable line ending processing, specifies line terminator",
aac3bd0d
GS
2136"-[mM][-]module execute `use/no module...' before executing program",
2137"-n assume 'while (<>) { ... }' loop around program",
2138"-p assume loop like -n but print line also, like sed",
2139"-P run program through C preprocessor before compilation",
2140"-s enable rudimentary parsing for switches after programfile",
2141"-S look for programfile using PATH environment variable",
2142"-T enable tainting checks",
9cbc33e8 2143"-t enable tainting warnings",
aac3bd0d 2144"-u dump core after parsing program",
fb73857a 2145"-U allow unsafe operations",
aac3bd0d
GS
2146"-v print version, subversion (includes VERY IMPORTANT perl info)",
2147"-V[:variable] print configuration summary (or a single Config.pm variable)",
2148"-w enable many useful warnings (RECOMMENDED)",
3c0facb2
GS
2149"-W enable all warnings",
2150"-X disable all warnings",
fb73857a
PP
2151"-x[directory] strip off text before #!perl line and perhaps cd to directory",
2152"\n",
2153NULL
2154};
76e3520e 2155 char **p = usage_msg;
fb73857a 2156
b0e47665
GS
2157 PerlIO_printf(PerlIO_stdout(),
2158 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2159 name);
fb73857a 2160 while (*p)
b0e47665 2161 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
4633a7c4
LW
2162}
2163
79072805
LW
2164/* This routine handles any switches that can be given during run */
2165
2166char *
864dbfa3 2167Perl_moreswitches(pTHX_ char *s)
79072805 2168{
ba210ebe 2169 STRLEN numlen;
84c133a0 2170 UV rschar;
79072805
LW
2171
2172 switch (*s) {
2173 case '0':
a863c7d1 2174 {
f2095865
JH
2175 I32 flags = 0;
2176
2177 SvREFCNT_dec(PL_rs);
2178 if (s[1] == 'x' && s[2]) {
2179 char *e;
2180 U8 *tmps;
2181
2182 for (s += 2, e = s; *e; e++);
2183 numlen = e - s;
2184 flags = PERL_SCAN_SILENT_ILLDIGIT;
2185 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
2186 if (s + numlen < e) {
2187 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
2188 numlen = 0;
2189 s--;
2190 }
2191 PL_rs = newSVpvn("", 0);
c5661c80 2192 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH
2193 tmps = (U8*)SvPVX(PL_rs);
2194 uvchr_to_utf8(tmps, rschar);
2195 SvCUR_set(PL_rs, UNISKIP(rschar));
2196 SvUTF8_on(PL_rs);
2197 }
2198 else {
2199 numlen = 4;
2200 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
2201 if (rschar & ~((U8)~0))
2202 PL_rs = &PL_sv_undef;
2203 else if (!rschar && numlen >= 2)
2204 PL_rs = newSVpvn("", 0);
2205 else {
2206 char ch = (char)rschar;
2207 PL_rs = newSVpvn(&ch, 1);
2208 }
2209 }
2210 return s + numlen;
a863c7d1 2211 }
46487f74 2212 case 'C':
a05d7ebb
JH
2213 s++;
2214 PL_unicode = parse_unicode_opts(&s);
46487f74 2215 return s;
2304df62 2216 case 'F':
3280af22 2217 PL_minus_F = TRUE;
ebce5377
RGS
2218 PL_splitstr = ++s;
2219 while (*s && !isSPACE(*s)) ++s;
2220 *s = '\0';
2221 PL_splitstr = savepv(PL_splitstr);
2304df62 2222 return s;
79072805 2223 case 'a':
3280af22 2224 PL_minus_a = TRUE;
79072805
LW
2225 s++;
2226 return s;
2227 case 'c':
3280af22 2228 PL_minus_c = TRUE;
79072805
LW
2229 s++;
2230 return s;
2231 case 'd':
bbce6d69 2232 forbid_setid("-d");
4633a7c4 2233 s++;
70c94a19
RR
2234 /* The following permits -d:Mod to accepts arguments following an =
2235 in the fashion that -MSome::Mod does. */
2236 if (*s == ':' || *s == '=') {
2237 char *start;
2238 SV *sv;
2239 sv = newSVpv("use Devel::", 0);
2240 start = ++s;
2241 /* We now allow -d:Module=Foo,Bar */
2242 while(isALNUM(*s) || *s==':') ++s;
2243 if (*s != '=')
2244 sv_catpv(sv, start);
2245 else {
2246 sv_catpvn(sv, start, s-start);
2247 sv_catpv(sv, " split(/,/,q{");
2248 sv_catpv(sv, ++s);
2249 sv_catpv(sv, "})");
2250 }
4633a7c4 2251 s += strlen(s);
70c94a19 2252 my_setenv("PERL5DB", SvPV(sv, PL_na));
4633a7c4 2253 }
ed094faf 2254 if (!PL_perldb) {
3280af22 2255 PL_perldb = PERLDB_ALL;
a0d0e21e 2256 init_debugger();
ed094faf 2257 }
79072805
LW
2258 return s;
2259 case 'D':
0453d815 2260 {
79072805 2261#ifdef DEBUGGING
bbce6d69 2262 forbid_setid("-D");
79072805 2263 if (isALPHA(s[1])) {
04932ac8 2264 /* if adding extra options, remember to update DEBUG_MASK */
7bab3ede 2265 static char debopts[] = "psltocPmfrxu HXDSTRJvC";
79072805
LW
2266 char *d;
2267
93a17b20 2268 for (s++; *s && (d = strchr(debopts,*s)); s++)
3280af22 2269 PL_debug |= 1 << (d - debopts);
79072805
LW
2270 }
2271 else {
3280af22 2272 PL_debug = atoi(s+1);
79072805
LW
2273 for (s++; isDIGIT(*s); s++) ;
2274 }
2ac72d6e 2275#ifdef EBCDIC
12a43e32
JH
2276 if (DEBUG_p_TEST_ && ckWARN_d(WARN_DEBUGGING))
2277 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2278 "-Dp not implemented on this platform\n");
2279#endif
aea4f609 2280 PL_debug |= DEBUG_TOP_FLAG;
12a43e32 2281#else /* !DEBUGGING */
0453d815 2282 if (ckWARN_d(WARN_DEBUGGING))
9014280d 2283 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
0453d815 2284 "Recompile perl with -DDEBUGGING to use -D switch\n");
a0d0e21e 2285 for (s++; isALNUM(*s); s++) ;
79072805
LW
2286#endif
2287 /*SUPPRESS 530*/
2288 return s;
0453d815 2289 }
4633a7c4 2290 case 'h':
ac27b0f5 2291 usage(PL_origargv[0]);
7ca617d0 2292 my_exit(0);
79072805 2293 case 'i':
3280af22
NIS
2294 if (PL_inplace)
2295 Safefree(PL_inplace);
c030f24b
GH
2296#if defined(__CYGWIN__) /* do backup extension automagically */
2297 if (*(s+1) == '\0') {
2298 PL_inplace = savepv(".bak");
2299 return s+1;
2300 }
2301#endif /* __CYGWIN__ */
3280af22 2302 PL_inplace = savepv(s+1);
79072805 2303 /*SUPPRESS 530*/
3280af22 2304 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
7b8d334a 2305 if (*s) {
fb73857a 2306 *s++ = '\0';
7b8d334a
GS
2307 if (*s == '-') /* Additional switches on #! line. */
2308 s++;
2309 }
fb73857a 2310 return s;
4e49a025 2311 case 'I': /* -I handled both here and in parse_body() */
bbce6d69 2312 forbid_setid("-I");
fb73857a
PP
2313 ++s;
2314 while (*s && isSPACE(*s))
2315 ++s;
2316 if (*s) {
774d564b 2317 char *e, *p;
0df16ed7
GS
2318 p = s;
2319 /* ignore trailing spaces (possibly followed by other switches) */
2320 do {
2321 for (e = p; *e && !isSPACE(*e); e++) ;
2322 p = e;
2323 while (isSPACE(*p))
2324 p++;
2325 } while (*p && *p != '-');
2326 e = savepvn(s, e-s);
574c798a 2327 incpush(e, TRUE, TRUE, FALSE);
0df16ed7
GS
2328 Safefree(e);
2329 s = p;
2330 if (*s == '-')
2331 s++;
79072805
LW
2332 }
2333 else
a67e862a 2334 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 2335 return s;
79072805 2336 case 'l':
3280af22 2337 PL_minus_l = TRUE;
79072805 2338 s++;
7889fe52
NIS
2339 if (PL_ors_sv) {
2340 SvREFCNT_dec(PL_ors_sv);
2341 PL_ors_sv = Nullsv;
2342 }
79072805 2343 if (isDIGIT(*s)) {
53305cf1 2344 I32 flags = 0;
7889fe52 2345 PL_ors_sv = newSVpvn("\n",1);
53305cf1
NC
2346 numlen = 3 + (*s == '0');
2347 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
2348 s += numlen;
2349 }
2350 else {
8bfdd7d9 2351 if (RsPARA(PL_rs)) {
7889fe52
NIS
2352 PL_ors_sv = newSVpvn("\n\n",2);
2353 }
2354 else {
8bfdd7d9 2355 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 2356 }
79072805
LW
2357 }
2358 return s;
06492da6
SF
2359 case 'A':
2360 forbid_setid("-A");
930366bd
RGS
2361 if (!PL_preambleav)
2362 PL_preambleav = newAV();
06492da6 2363 if (*++s) {
930366bd 2364 SV *sv = newSVpvn("use assertions::activate split(/,/,q{",37);
06492da6
SF
2365 sv_catpv(sv,s);
2366 sv_catpv(sv,"})");
2367 s+=strlen(s);
06492da6
SF
2368 av_push(PL_preambleav, sv);
2369 }
2370 else
930366bd 2371 av_push(PL_preambleav, newSVpvn("use assertions::activate",24));
06492da6 2372 return s;
1a30305b 2373 case 'M':
bbce6d69 2374 forbid_setid("-M"); /* XXX ? */
1a30305b
PP
2375 /* FALL THROUGH */
2376 case 'm':
bbce6d69 2377 forbid_setid("-m"); /* XXX ? */
1a30305b 2378 if (*++s) {
a5f75d66 2379 char *start;
11343788 2380 SV *sv;
a5f75d66
AD
2381 char *use = "use ";
2382 /* -M-foo == 'no foo' */
2383 if (*s == '-') { use = "no "; ++s; }
11343788 2384 sv = newSVpv(use,0);
a5f75d66 2385 start = s;
1a30305b 2386 /* We allow -M'Module qw(Foo Bar)' */
c07a80fd
PP
2387 while(isALNUM(*s) || *s==':') ++s;
2388 if (*s != '=') {
11343788 2389 sv_catpv(sv, start);
c07a80fd
PP
2390 if (*(start-1) == 'm') {
2391 if (*s != '\0')
cea2e8a9 2392 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
11343788 2393 sv_catpv( sv, " ()");
c07a80fd
PP
2394 }
2395 } else {
6df41af2 2396 if (s == start)
be98fb35
GS
2397 Perl_croak(aTHX_ "Module name required with -%c option",
2398 s[-1]);
11343788
MB
2399 sv_catpvn(sv, start, s-start);
2400 sv_catpv(sv, " split(/,/,q{");
2401 sv_catpv(sv, ++s);
2402 sv_catpv(sv, "})");
c07a80fd 2403 }
1a30305b 2404 s += strlen(s);
5c831c24 2405 if (!PL_preambleav)
3280af22
NIS
2406 PL_preambleav = newAV();
2407 av_push(PL_preambleav, sv);
1a30305b
PP
2408 }
2409 else
cea2e8a9 2410 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
1a30305b 2411 return s;
79072805 2412 case 'n':
3280af22 2413 PL_minus_n = TRUE;
79072805
LW
2414 s++;
2415 return s;
2416 case 'p':
3280af22 2417 PL_minus_p = TRUE;
79072805
LW
2418 s++;
2419 return s;
2420 case 's':
bbce6d69 2421 forbid_setid("-s");
3280af22 2422 PL_doswitches = TRUE;
79072805
LW
2423 s++;
2424 return s;
6537fe72
MS
2425 case 't':
2426 if (!PL_tainting)
2427 Perl_croak(aTHX_ "Too late for \"-t\" option");
2428 s++;
2429 return s;
463ee0b2 2430 case 'T':
3280af22 2431 if (!PL_tainting)
cea2e8a9 2432 Perl_croak(aTHX_ "Too late for \"-T\" option");
463ee0b2
LW
2433 s++;
2434 return s;
79072805 2435 case 'u':
bf4acbe4
GS
2436#ifdef MACOS_TRADITIONAL
2437 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2438#endif
3280af22 2439 PL_do_undump = TRUE;
79072805
LW
2440 s++;
2441 return s;
2442 case 'U':
3280af22 2443 PL_unsafe = TRUE;
79072805
LW
2444 s++;
2445 return s;
2446 case 'v':
8e9464f1 2447#if !defined(DGUX)
b0e47665 2448 PerlIO_printf(PerlIO_stdout(),
d2560b70 2449 Perl_form(aTHX_ "\nThis is perl, v%"VDf" built for %s",
b0e47665 2450 PL_patchlevel, ARCHNAME));
8e9464f1
JH
2451#else /* DGUX */
2452/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
2453 PerlIO_printf(PerlIO_stdout(),
2454 Perl_form(aTHX_ "\nThis is perl, version %vd\n", PL_patchlevel));
2455 PerlIO_printf(PerlIO_stdout(),
2456 Perl_form(aTHX_ " built under %s at %s %s\n",
2457 OSNAME, __DATE__, __TIME__));
2458 PerlIO_printf(PerlIO_stdout(),
2459 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 2460 OSVERS));
8e9464f1
JH
2461#endif /* !DGUX */
2462
fb73857a
PP
2463#if defined(LOCAL_PATCH_COUNT)
2464 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS
2465 PerlIO_printf(PerlIO_stdout(),
2466 "\n(with %d registered patch%s, "
2467 "see perl -V for more detail)",
2468 (int)LOCAL_PATCH_COUNT,
2469 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 2470#endif
1a30305b 2471
b0e47665 2472 PerlIO_printf(PerlIO_stdout(),
4c79ee7a 2473 "\n\nCopyright 1987-2003, Larry Wall\n");
eae9c151
JH
2474#ifdef MACOS_TRADITIONAL
2475 PerlIO_printf(PerlIO_stdout(),
be3c0a43 2476 "\nMac OS port Copyright 1991-2002, Matthias Neeracher;\n"
03765510 2477 "maintained by Chris Nandor\n");
eae9c151 2478#endif
79072805 2479#ifdef MSDOS
b0e47665
GS
2480 PerlIO_printf(PerlIO_stdout(),
2481 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff
PP
2482#endif
2483#ifdef DJGPP
b0e47665
GS
2484 PerlIO_printf(PerlIO_stdout(),
2485 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2486 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 2487#endif
79072805 2488#ifdef OS2
b0e47665
GS
2489 PerlIO_printf(PerlIO_stdout(),
2490 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
be3c0a43 2491 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
79072805 2492#endif
79072805 2493#ifdef atarist
b0e47665
GS
2494 PerlIO_printf(PerlIO_stdout(),
2495 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 2496#endif
a3f9223b 2497#ifdef __BEOS__
b0e47665
GS
2498 PerlIO_printf(PerlIO_stdout(),
2499 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 2500#endif
1d84e8df 2501#ifdef MPE
b0e47665 2502 PerlIO_printf(PerlIO_stdout(),
be3c0a43 2503 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2002\n");
1d84e8df 2504#endif
9d116dd7 2505#ifdef OEMVS
b0e47665
GS
2506 PerlIO_printf(PerlIO_stdout(),
2507 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 2508#endif
495c5fdc 2509#ifdef __VOS__
b0e47665 2510 PerlIO_printf(PerlIO_stdout(),
94efb9fb 2511 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
495c5fdc 2512#endif
092bebab 2513#ifdef __OPEN_VM
b0e47665
GS
2514 PerlIO_printf(PerlIO_stdout(),
2515 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 2516#endif
a1a0e61e 2517#ifdef POSIX_BC
b0e47665
GS
2518 PerlIO_printf(PerlIO_stdout(),
2519 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 2520#endif
61ae2fbf 2521#ifdef __MINT__
b0e47665
GS
2522 PerlIO_printf(PerlIO_stdout(),
2523 "MiNT port by Guido Flohr, 1997-1999\n");
61ae2fbf 2524#endif
f83d2536 2525#ifdef EPOC
b0e47665 2526 PerlIO_printf(PerlIO_stdout(),
be3c0a43 2527 "EPOC port by Olaf Flebbe, 1999-2002\n");
f83d2536 2528#endif
e1caacb4 2529#ifdef UNDER_CE
b475b3e6
JH
2530 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
2531 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
e1caacb4
JH
2532 wce_hitreturn();
2533#endif
baed7233
DL
2534#ifdef BINARY_BUILD_NOTICE
2535 BINARY_BUILD_NOTICE;
2536#endif
b0e47665
GS
2537 PerlIO_printf(PerlIO_stdout(),
2538 "\n\
79072805 2539Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 2540GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687
GS
2541Complete documentation for Perl, including FAQ lists, should be found on\n\
2542this system using `man perl' or `perldoc perl'. If you have access to the\n\
2543Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
7ca617d0 2544 my_exit(0);
79072805 2545 case 'w':
599cee73 2546 if (! (PL_dowarn & G_WARN_ALL_MASK))
ac27b0f5 2547 PL_dowarn |= G_WARN_ON;
599cee73
PM
2548 s++;
2549 return s;
2550 case 'W':
ac27b0f5 2551 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
317ea90d
MS
2552 if (!specialWARN(PL_compiling.cop_warnings))
2553 SvREFCNT_dec(PL_compiling.cop_warnings);
d3a7d8c7 2554 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM
2555 s++;
2556 return s;
2557 case 'X':
ac27b0f5 2558 PL_dowarn = G_WARN_ALL_OFF;
317ea90d
MS
2559 if (!specialWARN(PL_compiling.cop_warnings))
2560 SvREFCNT_dec(PL_compiling.cop_warnings);
d3a7d8c7 2561 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW
2562 s++;
2563 return s;
a0d0e21e 2564 case '*':
79072805
LW
2565 case ' ':
2566 if (s[1] == '-') /* Additional switches on #! line. */
2567 return s+2;
2568 break;
a0d0e21e 2569 case '-':
79072805 2570 case 0:
51882d45 2571#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS
2572 case '\r':
2573#endif
79072805
LW
2574 case '\n':
2575 case '\t':
2576 break;
aa689395
PP
2577#ifdef ALTERNATE_SHEBANG
2578 case 'S': /* OS/2 needs -S on "extproc" line. */
2579 break;
2580#endif
a0d0e21e 2581 case 'P':
3280af22 2582 if (PL_preprocess)
a0d0e21e
LW
2583 return s+1;
2584 /* FALL THROUGH */
79072805 2585 default:
cea2e8a9 2586 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805
LW
2587 }
2588 return Nullch;
2589}
2590
2591/* compliments of Tom Christiansen */
2592
2593/* unexec() can be found in the Gnu emacs distribution */
ee580363 2594/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW
2595
2596void
864dbfa3 2597Perl_my_unexec(pTHX)
79072805
LW
2598{
2599#ifdef UNEXEC
46fc3d4c
PP
2600 SV* prog;
2601 SV* file;
ee580363 2602 int status = 1;
79072805
LW
2603 extern int etext;
2604
ee580363 2605 prog = newSVpv(BIN_EXP, 0);
46fc3d4c 2606 sv_catpv(prog, "/perl");
6b88bc9c 2607 file = newSVpv(PL_origfilename, 0);
46fc3d4c 2608 sv_catpv(file, ".perldump");
79072805 2609
ee580363
GS
2610 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2611 /* unexec prints msg to stderr in case of failure */
6ad3d225 2612 PerlProc_exit(status);
79072805 2613#else
a5f75d66
AD
2614# ifdef VMS
2615# include <lib$routines.h>
2616 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
aa689395 2617# else
79072805 2618 ABORT(); /* for use with undump */
aa689395 2619# endif
a5f75d66 2620#endif
79072805
LW
2621}
2622
cb68f92d
GS
2623/* initialize curinterp */
2624STATIC void
cea2e8a9 2625S_init_interp(pTHX)
cb68f92d
GS
2626{
2627
acfe0abc
GS
2628#ifdef MULTIPLICITY
2629# define PERLVAR(var,type)
2630# define PERLVARA(var,n,type)
2631# if defined(PERL_IMPLICIT_CONTEXT)
2632# if defined(USE_5005THREADS)
2633# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
c5be433b 2634# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
acfe0abc
GS
2635# else /* !USE_5005THREADS */
2636# define PERLVARI(var,type,init) aTHX->var = init;
2637# define PERLVARIC(var,type,init) aTHX->var = init;
2638# endif /* USE_5005THREADS */
3967c732 2639# else
acfe0abc
GS
2640# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2641# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
066ef5b5 2642# endif
acfe0abc
GS
2643# include "intrpvar.h"
2644# ifndef USE_5005THREADS
2645# include "thrdvar.h"
2646# endif
2647# undef PERLVAR
2648# undef PERLVARA
2649# undef PERLVARI
2650# undef PERLVARIC
2651#else
2652# define PERLVAR(var,type)
2653# define PERLVARA(var,n,type)
2654# define PERLVARI(var,type,init) PL_##var = init;
2655# define PERLVARIC(var,type,init) PL_##var = init;
2656# include "intrpvar.h"
2657# ifndef USE_5005THREADS
2658# include "thrdvar.h"
2659# endif
2660# undef PERLVAR
2661# undef PERLVARA
2662# undef PERLVARI
2663# undef PERLVARIC
cb68f92d
GS
2664#endif
2665
cb68f92d
GS
2666}
2667
76e3520e 2668STATIC void
cea2e8a9 2669S_init_main_stash(pTHX)
79072805 2670{
463ee0b2 2671 GV *gv;
6e72f9df 2672
3280af22 2673 PL_curstash = PL_defstash = newHV();
79cb57f6 2674 PL_curstname = newSVpvn("main",4);
adbc6bb1
LW
2675 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2676 SvREFCNT_dec(GvHV(gv));
3280af22 2677 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
463ee0b2 2678 SvREADONLY_on(gv);
3280af22
NIS
2679 HvNAME(PL_defstash) = savepv("main");
2680 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2681 GvMULTI_on(PL_incgv);
2682 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2683 GvMULTI_on(PL_hintgv);
2684 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2685 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2686 GvMULTI_on(PL_errgv);
2687 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2688 GvMULTI_on(PL_replgv);
cea2e8a9 2689 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
38a03e6e
MB
2690 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2691 sv_setpvn(ERRSV, "", 0);
3280af22 2692 PL_curstash = PL_defstash;
11faa288 2693 CopSTASH_set(&PL_compiling, PL_defstash);
ed094faf 2694 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
3280af22 2695 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
4633a7c4 2696 /* We must init $/ before switches are processed. */
864dbfa3 2697 sv_setpvn(get_sv("/", TRUE), "\n", 1);
79072805
LW
2698}
2699
76e3520e 2700STATIC void
cea2e8a9 2701S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
79072805 2702{
1b24ed4b
MS
2703 char *quote;
2704 char *code;
2705 char *cpp_discard_flag;
2706 char *perl;
2707
6c4ab083 2708 *fdscript = -1;
79072805 2709
3280af22
NIS
2710 if (PL_e_script) {
2711 PL_origfilename = savepv("-e");
96436eeb 2712 }
6c4ab083
GS
2713 else {
2714 /* if find_script() returns, it returns a malloc()-ed value */
3280af22 2715 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
6c4ab083
GS
2716
2717 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2718 char *s = scriptname + 8;
2719 *fdscript = atoi(s);
2720 while (isDIGIT(*s))
2721 s++;
2722 if (*s) {
2723 scriptname = savepv(s + 1);
3280af22
NIS
2724 Safefree(PL_origfilename);
2725 PL_origfilename = scriptname;
6c4ab083
GS
2726 }
2727 }
2728 }
2729
05ec9bb3 2730 CopFILE_free(PL_curcop);
57843af0 2731 CopFILE_set(PL_curcop, PL_origfilename);
3280af22 2732 if (strEQ(PL_origfilename,"-"))
79072805 2733 scriptname = "";
01f988be 2734 if (*fdscript >= 0) {
3280af22 2735 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
1b24ed4b
MS
2736# if defined(HAS_FCNTL) && defined(F_SETFD)
2737 if (PL_rsfp)
2738 /* ensure close-on-exec */
2739 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1);
2740# endif
96436eeb 2741 }
3280af22 2742 else if (PL_preprocess) {
46fc3d4c 2743 char *cpp_cfg = CPPSTDIN;
79cb57f6 2744 SV *cpp = newSVpvn("",0);
46fc3d4c
PP
2745 SV *cmd = NEWSV(0,0);
2746
2747 if (strEQ(cpp_cfg, "cppstdin"))
cea2e8a9 2748 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
46fc3d4c 2749 sv_catpv(cpp, cpp_cfg);
79072805 2750
1b24ed4b
MS
2751# ifndef VMS
2752 sv_catpvn(sv, "-I", 2);
2753 sv_catpv(sv,PRIVLIB_EXP);
2754# endif
46fc3d4c 2755
14953ddc
MB
2756 DEBUG_P(PerlIO_printf(Perl_debug_log,
2757 "PL_preprocess: scriptname=\"%s\", cpp=\"%s\", sv=\"%s\", CPPMINUS=\"%s\"\n",
2758 scriptname, SvPVX (cpp), SvPVX (sv), CPPMINUS));
1b24ed4b
MS
2759
2760# if defined(MSDOS) || defined(WIN32) || defined(VMS)
2761 quote = "\"";
2762# else
2763 quote = "'";
2764# endif
2765
2766# ifdef VMS
2767 cpp_discard_flag = "";
2768# else
2769 cpp_discard_flag = "-C";
2770# endif
2771
2772# ifdef OS2
2773 perl = os2_execname(aTHX);
2774# else
2775 perl = PL_origargv[0];
2776# endif
2777
2778
2779 /* This strips off Perl comments which might interfere with
62375a60
NIS
2780 the C pre-processor, including #!. #line directives are
2781 deliberately stripped to avoid confusion with Perl's version
1b24ed4b
MS
2782 of #line. FWP played some golf with it so it will fit
2783 into VMS's 255 character buffer.
2784 */
2785 if( PL_doextract )
2786 code = "(1../^#!.*perl/i)|/^\\s*#(?!\\s*((ifn?|un)def|(el|end)?if|define|include|else|error|pragma)\\b)/||!($|=1)||print";
2787 else
2788 code = "/^\\s*#(?!\\s*((ifn?|un)def|(el|end)?if|define|include|else|error|pragma)\\b)/||!($|=1)||print";
2789
2790 Perl_sv_setpvf(aTHX_ cmd, "\
2791%s -ne%s%s%s %s | %"SVf" %s %"SVf" %s",
62375a60 2792 perl, quote, code, quote, scriptname, cpp,
1b24ed4b
MS
2793 cpp_discard_flag, sv, CPPMINUS);
2794
3280af22 2795 PL_doextract = FALSE;
1b24ed4b
MS
2796# ifdef IAMSUID /* actually, this is caught earlier */
2797 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
2798# ifdef HAS_SETEUID
2799 (void)seteuid(PL_uid); /* musn't stay setuid root */
2800# else
2801# ifdef HAS_SETREUID
2802 (void)setreuid((Uid_t)-1, PL_uid);
2803# else
2804# ifdef HAS_SETRESUID
2805 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
2806# else
2807 PerlProc_setuid(PL_uid);
2808# endif
2809# endif
2810# endif
b28d0864 2811 if (PerlProc_geteuid() != PL_uid)
cea2e8a9 2812 Perl_croak(aTHX_ "Can't do seteuid!\n");
79072805 2813 }
1b24ed4b 2814# endif /* IAMSUID */
0a6c758d 2815
62375a60
NIS
2816 DEBUG_P(PerlIO_printf(Perl_debug_log,
2817 "PL_preprocess: cmd=\"%s\"\n",
0a6c758d
MS
2818 SvPVX(cmd)));
2819
3280af22 2820 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
46fc3d4c
PP
2821 SvREFCNT_dec(cmd);
2822 SvREFCNT_dec(cpp);
79072805
LW
2823 }
2824 else if (!*scriptname) {
bbce6d69 2825 forbid_setid("program input from stdin");
3280af22 2826 PL_rsfp = PerlIO_stdin();
79072805 2827 }
96436eeb 2828 else {
3280af22 2829 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
1b24ed4b
MS
2830# if defined(HAS_FCNTL) && defined(F_SETFD)
2831 if (PL_rsfp)
2832 /* ensure close-on-exec */
2833 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1);
2834# endif
96436eeb 2835 }
3280af22 2836 if (!PL_rsfp) {
1b24ed4b
MS
2837# ifdef DOSUID
2838# ifndef IAMSUID /* in case script is not readable before setuid */
2839 if (PL_euid &&
2840 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
2841 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2842 {
2843 /* try again */
62375a60
NIS
2844 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT,
2845 BIN_EXP, (int)PERL_REVISION,
1b24ed4b
MS
2846 (int)PERL_VERSION,
2847 (int)PERL_SUBVERSION), PL_origargv);
2848 Perl_croak(aTHX_ "Can't do setuid\n");
2849 }
2850# endif
2851# endif
2852# ifdef IAMSUID
2853 errno = EPERM;
2854 Perl_croak(aTHX_ "Can't open perl script: %s\n",
2855 Strerror(errno));
2856# else
2857 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
2858 CopFILE(PL_curcop), Strerror(errno));
2859# endif
13281fa4 2860 }
79072805 2861}
8d063cd8 2862
7b89560d
JH
2863/* Mention
2864 * I_SYSSTATVFS HAS_FSTATVFS
2865 * I_SYSMOUNT
c890dc6c 2866 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
7b89560d
JH
2867 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2868 * here so that metaconfig picks them up. */
2869
104d25b7 2870#ifdef IAMSUID
864dbfa3 2871STATIC int
e688b231 2872S_fd_on_nosuid_fs(pTHX_ int fd)
104d25b7 2873{
0545a864
JH
2874 int check_okay = 0; /* able to do all the required sys/libcalls */
2875 int on_nosuid = 0; /* the fd is on a nosuid fs */
104d25b7 2876/*
ad27e871 2877 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
e688b231 2878 * fstatvfs() is UNIX98.
0545a864 2879 * fstatfs() is 4.3 BSD.
ad27e871 2880 * ustat()+getmnt() is pre-4.3 BSD.
0545a864
JH
2881 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2882 * an irrelevant filesystem while trying to reach the right one.
104d25b7
JH
2883 */
2884
6439433f
JH
2885#undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2886
2887# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2888 defined(HAS_FSTATVFS)
2889# define FD_ON_NOSUID_CHECK_OKAY
104d25b7 2890 struct statvfs stfs;
6439433f 2891
104d25b7
JH
2892 check_okay = fstatvfs(fd, &stfs) == 0;
2893 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
6439433f 2894# endif /* fstatvfs */
ac27b0f5 2895
6439433f
JH
2896# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2897 defined(PERL_MOUNT_NOSUID) && \
2898 defined(HAS_FSTATFS) && \
2899 defined(HAS_STRUCT_STATFS) && \
2900 defined(HAS_STRUCT_STATFS_F_FLAGS)
2901# define FD_ON_NOSUID_CHECK_OKAY
e688b231 2902 struct statfs stfs;
6439433f 2903
104d25b7 2904 check_okay = fstatfs(fd, &stfs) == 0;
104d25b7 2905 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
6439433f
JH
2906# endif /* fstatfs */
2907
2908# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2909 defined(PERL_MOUNT_NOSUID) && \
2910 defined(HAS_FSTAT) && \
2911 defined(HAS_USTAT) && \
2912 defined(HAS_GETMNT) && \
2913 defined(HAS_STRUCT_FS_DATA) && \
2914 defined(NOSTAT_ONE)
2915# define FD_ON_NOSUID_CHECK_OKAY
c623ac67 2916 Stat_t fdst;
6439433f 2917
0545a864 2918 if (fstat(fd, &fdst) == 0) {
6439433f
JH
2919 struct ustat us;
2920 if (ustat(fdst.st_dev, &us) == 0) {
2921 struct fs_data fsd;
2922 /* NOSTAT_ONE here because we're not examining fields which
2923 * vary between that case and STAT_ONE. */
ad27e871 2924 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
6439433f
JH
2925 size_t cmplen = sizeof(us.f_fname);
2926 if (sizeof(fsd.fd_req.path) < cmplen)
2927 cmplen = sizeof(fsd.fd_req.path);
2928 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2929 fdst.st_dev == fsd.fd_req.dev) {
2930 check_okay = 1;
2931 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2932 }
2933 }
2934 }
2935 }
0545a864 2936 }
6439433f
JH
2937# endif /* fstat+ustat+getmnt */
2938
2939# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2940 defined(HAS_GETMNTENT) && \
2941 defined(HAS_HASMNTOPT) && \
2942 defined(MNTOPT_NOSUID)
2943# define FD_ON_NOSUID_CHECK_OKAY
2944 FILE *mtab = fopen("/etc/mtab", "r");
2945 struct mntent *entry;
c623ac67 2946 Stat_t stb, fsb;
104d25b7
JH
2947
2948 if (mtab && (fstat(fd, &stb) == 0)) {
6439433f
JH
2949 while (entry = getmntent(mtab)) {
2950 if (stat(entry->mnt_dir, &fsb) == 0
2951 && fsb.st_dev == stb.st_dev)
2952 {
2953 /* found the filesystem */
2954 check_okay = 1;
2955 if (hasmntopt(entry, MNTOPT_NOSUID))
2956 on_nosuid = 1;
2957 break;
2958 } /* A single fs may well fail its stat(). */
2959 }
104d25b7
JH
2960 }
2961 if (mtab)
6439433f
JH
2962 fclose(mtab);
2963# endif /* getmntent+hasmntopt */
0545a864 2964
ac27b0f5 2965 if (!check_okay)
0545a864 2966 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
104d25b7
JH
2967 return on_nosuid;
2968}
2969#endif /* IAMSUID */
2970
76e3520e 2971STATIC void
cea2e8a9 2972S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
79072805 2973{
155aba94 2974#ifdef IAMSUID
96436eeb 2975 int which;
155aba94 2976#endif
96436eeb 2977
13281fa4
LW
2978 /* do we need to emulate setuid on scripts? */
2979
2980 /* This code is for those BSD systems that have setuid #! scripts disabled
2981 * in the kernel because of a security problem. Merely defining DOSUID
2982 * in perl will not fix that problem, but if you have disabled setuid
2983 * scripts in the kernel, this will attempt to emulate setuid and setgid
2984 * on scripts that have those now-otherwise-useless bits set. The setuid
27e2fb84
LW
2985 * root version must be called suidperl or sperlN.NNN. If regular perl
2986 * discovers that it has opened a setuid script, it calls suidperl with
2987 * the same argv that it had. If suidperl finds that the script it has
2988 * just opened is NOT setuid root, it sets the effective uid back to the
2989 * uid. We don't just make perl setuid root because that loses the
2990 * effective uid we had before invoking perl, if it was different from the
2991 * uid.
13281fa4
LW
2992 *
2993 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2994 * be defined in suidperl only. suidperl must be setuid root. The
2995 * Configure script will set this up for you if you want it.
2996 */
a687059c 2997
13281fa4 2998#ifdef DOSUID
6e72f9df 2999 char *s, *s2;
a0d0e21e 3000
b28d0864 3001 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
cea2e8a9 3002 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
b28d0864 3003 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
79072805 3004 I32 len;
2d8e6c8d 3005 STRLEN n_a;
13281fa4 3006
a687059c 3007#ifdef IAMSUID
fe14fcc3 3008#ifndef HAS_SETREUID
a687059c
LW
3009 /* On this access check to make sure the directories are readable,
3010 * there is actually a small window that the user could use to make
3011 * filename point to an accessible directory. So there is a faint
3012 * chance that someone could execute a setuid script down in a
3013 * non-accessible directory. I don't know what to do about that.
3014 * But I don't think it's too important. The manual lies when
3015 * it says access() is useful in setuid programs.
3016 */
cc49e20b 3017 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
cea2e8a9 3018 Perl_croak(aTHX_ "Permission denied");
a687059c
LW
3019#else
3020 /* If we can swap euid and uid, then we can determine access rights
3021 * with a simple stat of the file, and then compare device and
3022 * inode to make sure we did stat() on the same file we opened.
3023 * Then we just have to make sure he or she can execute it.
3024 */
3025 {
c623ac67 3026 Stat_t tmpstatbuf;
a687059c 3027
85e6fe83
LW
3028 if (
3029#ifdef HAS_SETREUID
b28d0864 3030 setreuid(PL_euid,PL_uid) < 0
a0d0e21e
LW
3031#else
3032# if HAS_SETRESUID
b28d0864 3033 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
a0d0e21e 3034# endif
85e6fe83 3035#endif
b28d0864 3036 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
cea2e8a9 3037 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
cc49e20b 3038 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
cea2e8a9 3039 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
2bb3463c 3040#if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
e688b231 3041 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
cea2e8a9 3042 Perl_croak(aTHX_ "Permission denied");
104d25b7 3043#endif
b28d0864
NIS
3044 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
3045 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
3046 (void)PerlIO_close(PL_rsfp);
cea2e8a9 3047 Perl_croak(aTHX_ "Permission denied\n");
a687059c 3048 }
85e6fe83
LW
3049 if (
3050#ifdef HAS_SETREUID
b28d0864 3051 setreuid(PL_uid,PL_euid) < 0
a0d0e21e
LW
3052#else
3053# if defined(HAS_SETRESUID)
b28d0864 3054 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
a0d0e21e 3055# endif
85e6fe83 3056#endif
b28d0864 3057 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
cea2e8a9 3058 Perl_croak(aTHX_ "Can't reswap uid and euid");
b28d0864 3059 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
cea2e8a9 3060 Perl_croak(aTHX_ "Permission denied\n");
a687059c 3061 }
fe14fcc3 3062#endif /* HAS_SETREUID */
a687059c
LW
3063#endif /* IAMSUID */
3064
b28d0864 3065 if (!S_ISREG(PL_statbuf.st_mode))
cea2e8a9 3066 Perl_croak(aTHX_ "Permission denied");
b28d0864 3067 if (PL_statbuf.st_mode & S_IWOTH)
cea2e8a9 3068 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
6b88bc9c 3069 PL_doswitches = FALSE; /* -s is insecure in suid */
57843af0 3070 CopLINE_inc(PL_curcop);
6b88bc9c 3071 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
2d8e6c8d 3072 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
cea2e8a9 3073 Perl_croak(aTHX_ "No #! line");
2d8e6c8d 3074 s = SvPV(PL_linestr,n_a)+2;
663a0e37 3075 if (*s == ' ') s++;
45d8adaa 3076 while (!isSPACE(*s)) s++;
2d8e6c8d 3077 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
6e72f9df
PP
3078 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
3079 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
cea2e8a9 3080 Perl_croak(aTHX_ "Not a perl script");
a687059c 3081 while (*s == ' ' || *s == '\t') s++;
13281fa4
LW
3082 /*
3083 * #! arg must be what we saw above. They can invoke it by
3084 * mentioning suidperl explicitly, but they may not add any strange
3085 * arguments beyond what #! says if they do invoke suidperl that way.
3086 */
3087 len = strlen(validarg);
3088 if (strEQ(validarg," PHOOEY ") ||
45d8adaa 3089 strnNE(s,validarg,len) || !isSPACE(s[len]))
cea2e8a9 3090 Perl_croak(aTHX_ "Args must match #! line");
a687059c
LW
3091
3092#ifndef IAMSUID
b28d0864
NIS
3093 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
3094 PL_euid == PL_statbuf.st_uid)
3095 if (!PL_do_undump)
cea2e8a9 3096 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
a687059c
LW
3097FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3098#endif /* IAMSUID */
13281fa4 3099
b28d0864
NIS
3100 if (PL_euid) { /* oops, we're not the setuid root perl */
3101 (void)PerlIO_close(PL_rsfp);
13281fa4 3102#ifndef IAMSUID
46fc3d4c 3103 /* try again */
a7cb1f99 3104 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS
3105 (int)PERL_REVISION, (int)PERL_VERSION,
3106 (int)PERL_SUBVERSION), PL_origargv);
13281fa4 3107#endif
cea2e8a9 3108 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4
LW
3109 }
3110
b28d0864 3111 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
fe14fcc3 3112#ifdef HAS_SETEGID
b28d0864 3113 (void)setegid(PL_statbuf.st_gid);
a687059c 3114#else
fe14fcc3 3115#ifdef HAS_SETREGID
b28d0864 3116 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
85e6fe83
LW
3117#else
3118#ifdef HAS_SETRESGID
b28d0864 3119 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
a687059c 3120#else
b28d0864 3121 PerlProc_setgid(PL_statbuf.st_gid);
a687059c
LW
3122#endif
3123#endif
85e6fe83 3124#endif
b28d0864 3125 if (PerlProc_getegid() != PL_statbuf.st_gid)
cea2e8a9 3126 Perl_croak(aTHX_ "Can't do setegid!\n");
83025b21 3127 }
b28d0864
NIS
3128 if (PL_statbuf.st_mode & S_ISUID) {
3129 if (PL_statbuf.st_uid != PL_euid)
fe14fcc3 3130#ifdef HAS_SETEUID
b28d0864 3131 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
a687059c 3132#else
fe14fcc3 3133#ifdef HAS_SETREUID
b28d0864 3134 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
85e6fe83
LW
3135#else
3136#ifdef HAS_SETRESUID
b28d0864 3137 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
a687059c 3138#else
b28d0864 3139 PerlProc_setuid(PL_statbuf.st_uid);
a687059c
LW
3140#endif
3141#endif
85e6fe83 3142#endif
b28d0864 3143 if (PerlProc_geteuid() != PL_statbuf.st_uid)
cea2e8a9 3144 Perl_croak(aTHX_ "Can't do seteuid!\n");
a687059c 3145 }
b28d0864 3146 else if (PL_uid) { /* oops, mustn't run as root */
fe14fcc3 3147#ifdef HAS_SETEUID
b28d0864 3148 (void)seteuid((Uid_t)PL_uid);
a687059c 3149#else
fe14fcc3 3150#ifdef HAS_SETREUID
b28d0864 3151 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
a687059c 3152#else
85e6fe83 3153#ifdef HAS_SETRESUID
b28d0864 3154 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
85e6fe83 3155#else
b28d0864 3156 PerlProc_setuid((Uid_t)PL_uid);
85e6fe83 3157#endif
a687059c
LW
3158#endif
3159#endif
b28d0864 3160 if (PerlProc_geteuid() != PL_uid)
cea2e8a9 3161 Perl_croak(aTHX_ "Can't do seteuid!\n");
83025b21 3162 }
748a9306 3163 init_ids();
b28d0864 3164 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
cea2e8a9 3165 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
13281fa4
LW
3166 }
3167#ifdef IAMSUID
6b88bc9c 3168 else if (PL_preprocess)
cea2e8a9 3169 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
96436eeb 3170 else if (fdscript >= 0)
cea2e8a9 3171 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
13281fa4 3172 else
cea2e8a9 3173 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
96436eeb
PP
3174
3175 /* We absolutely must clear out any saved ids here, so we */
3176 /* exec the real perl, substituting fd script for scriptname. */
3177 /* (We pass script name as "subdir" of fd, which perl will grok.) */
b28d0864
NIS
3178 PerlIO_rewind(PL_rsfp);
3179 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
6b88bc9c
GS
3180 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3181 if (!PL_origargv[which])
cea2e8a9
GS
3182 Perl_croak(aTHX_ "Permission denied");
3183 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
6b88bc9c 3184 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
96436eeb 3185#if defined(HAS_FCNTL) && defined(F_SETFD)
b28d0864 3186 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
96436eeb 3187#endif
a7cb1f99 3188 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS
3189 (int)PERL_REVISION, (int)PERL_VERSION,
3190 (int)PERL_SUBVERSION), PL_origargv);/* try again */
cea2e8a9 3191 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4 3192#endif /* IAMSUID */
a687059c 3193#else /* !DOSUID */
3280af22 3194 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
a687059c 3195#ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
b28d0864
NIS
3196 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3197 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
a687059c 3198 ||
b28d0864 3199 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
a687059c 3200 )
b28d0864 3201 if (!PL_do_undump)
cea2e8a9 3202 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
a687059c
LW
3203FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3204#endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3205 /* not set-id, must be wrapped */
a687059c 3206 }
13281fa4 3207#endif /* DOSUID */
79072805 3208}
13281fa4 3209
76e3520e 3210STATIC void
cea2e8a9 3211S_find_beginning(pTHX)
79072805 3212{
6e72f9df 3213 register char *s, *s2;
e55ac0fa
HS
3214#ifdef MACOS_TRADITIONAL
3215 int maclines = 0;
3216#endif
33b78306
LW
3217
3218 /* skip forward in input to the real script? */
3219
bbce6d69 3220 forbid_setid("-x");
bf4acbe4 3221#ifdef MACOS_TRADITIONAL
084592ab 3222 /* Since the Mac OS does not honor #! arguments for us, we do it ourselves */
ac27b0f5 3223
bf4acbe4
GS
3224 while (PL_doextract || gMacPerl_AlwaysExtract) {
3225 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3226 if (!gMacPerl_AlwaysExtract)
3227 Perl_croak(aTHX_ "No Perl script found in input\n");
e55ac0fa 3228
bf4acbe4
GS
3229 if (PL_doextract) /* require explicit override ? */
3230 if (!OverrideExtract(PL_origfilename))
3231 Perl_croak(aTHX_ "User aborted script\n");
3232 else
3233 PL_doextract = FALSE;
e55ac0fa 3234
bf4acbe4
GS
3235 /* Pater peccavi, file does not have #! */
3236 PerlIO_rewind(PL_rsfp);
e55ac0fa 3237
bf4acbe4
GS
3238 break;
3239 }
3240#else
3280af22
NIS
3241 while (PL_doextract) {
3242 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
cea2e8a9 3243 Perl_croak(aTHX_ "No Perl script found in input\n");
bf4acbe4 3244#endif
4f0c37ba
IZ
3245 s2 = s;
3246 if (*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))) {
3280af22
NIS
3247 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3248 PL_doextract = FALSE;
6e72f9df
PP
3249 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3250 s2 = s;
3251 while (*s == ' ' || *s == '\t') s++;
3252 if (*s++ == '-') {
3253 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3254 if (strnEQ(s2-4,"perl",4))
3255 /*SUPPRESS 530*/
155aba94
GS
3256 while ((s = moreswitches(s)))
3257 ;
33b78306 3258 }
95e8664e 3259#ifdef MACOS_TRADITIONAL
e55ac0fa
HS
3260 /* We are always searching for the #!perl line in MacPerl,
3261 * so if we find it, still keep the line count correct
3262 * by counting lines we already skipped over
3263 */
3264 for (; maclines > 0 ; maclines--)
3265 PerlIO_ungetc(PL_rsfp, '\n');
3266
95e8664e 3267 break;
e55ac0fa
HS
3268
3269 /* gMacPerl_AlwaysExtract is false in MPW tool */
3270 } else if (gMacPerl_AlwaysExtract) {
3271 ++maclines;
95e8664e 3272#endif
83025b21
LW
3273 }
3274 }
3275}
3276
afe37c7d 3277
76e3520e 3278STATIC void
cea2e8a9 3279S_init_ids(pTHX)
352d5a3a 3280{
d8eceb89
JH
3281 PL_uid = PerlProc_getuid();
3282 PL_euid = PerlProc_geteuid();
3283 PL_gid = PerlProc_getgid();
3284 PL_egid = PerlProc_getegid();
748a9306 3285#ifdef VMS
b28d0864
NIS
3286 PL_uid |= PL_gid << 16;
3287 PL_euid |= PL_egid << 16;
748a9306 3288#endif
3280af22 3289 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
748a9306 3290}
79072805 3291
76e3520e 3292STATIC void
cea2e8a9 3293S_forbid_setid(pTHX_ char *s)
bbce6d69 3294{
3280af22 3295 if (PL_euid != PL_uid)
cea2e8a9 3296 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3280af22 3297 if (PL_egid != PL_gid)
cea2e8a9 3298 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
bbce6d69
PP
3299}
3300
1ee4443e
IZ
3301void
3302Perl_init_debugger(pTHX)
748a9306 3303{
1ee4443e
IZ
3304 HV *ostash = PL_curstash;
3305
3280af22
NIS
3306 PL_curstash = PL_debstash;
3307 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3308 AvREAL_off(PL_dbargs);
3309 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3310 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3311 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
1ee4443e 3312 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3280af22 3313 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3314 sv_setiv(PL_DBsingle, 0);
3280af22 3315 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3316 sv_setiv(PL_DBtrace, 0);
3280af22 3317 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3318 sv_setiv(PL_DBsignal, 0);
06492da6
SF
3319 PL_DBassertion = GvSV((gv_fetchpv("assertion", GV_ADDMULTI, SVt_PV)));
3320 sv_setiv(PL_DBassertion, 0);
1ee4443e 3321 PL_curstash = ostash;
352d5a3a
LW
3322}
3323
2ce36478
SM
3324#ifndef STRESS_REALLOC
3325#define REASONABLE(size) (size)
3326#else
3327#define REASONABLE(size) (1) /* unreasonable */
3328#endif
3329
11343788 3330void
cea2e8a9 3331Perl_init_stacks(pTHX)
79072805 3332{
e336de0d 3333 /* start with 128-item stack and 8K cxstack */
3280af22 3334 PL_curstackinfo = new_stackinfo(REASONABLE(128),
e336de0d 3335 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3280af22
NIS
3336 PL_curstackinfo->si_type = PERLSI_MAIN;
3337 PL_curstack = PL_curstackinfo->si_stack;
3338 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
79072805 3339
3280af22
NIS
3340 PL_stack_base = AvARRAY(PL_curstack);
3341 PL_stack_sp = PL_stack_base;
3342 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
8990e307 3343
3280af22
NIS
3344 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3345 PL_tmps_floor = -1;
3346 PL_tmps_ix = -1;
3347 PL_tmps_max = REASONABLE(128);
8990e307 3348
3280af22
NIS
3349 New(54,PL_markstack,REASONABLE(32),I32);
3350 PL_markstack_ptr = PL_markstack;
3351 PL_markstack_max = PL_markstack + REASONABLE(32);
79072805 3352
ce2f7c3b 3353 SET_MARK_OFFSET;
e336de0d 3354
3280af22
NIS
3355 New(54,PL_scopestack,REASONABLE(32),I32);
3356 PL_scopestack_ix = 0;
3357 PL_scopestack_max = REASONABLE(32);
79072805 3358
3280af22
NIS
3359 New(54,PL_savestack,REASONABLE(128),ANY);
3360 PL_savestack_ix = 0;
3361 PL_savestack_max = REASONABLE(128);
79072805 3362
3280af22
NIS
3363 New(54,PL_retstack,REASONABLE(16),OP*);
3364 PL_retstack_ix = 0;
3365 PL_retstack_max = REASONABLE(16);
378cc40b 3366}
33b78306 3367
2ce36478
SM
3368#undef REASONABLE
3369
76e3520e 3370STATIC void
cea2e8a9 3371S_nuke_stacks(pTHX)
6e72f9df 3372{
3280af22
NIS
3373 while (PL_curstackinfo->si_next)
3374 PL_curstackinfo = PL_curstackinfo->si_next;
3375 while (PL_curstackinfo) {
3376 PERL_SI *p = PL_curstackinfo->si_prev;
bac4b2ad 3377 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3280af22
NIS
3378 Safefree(PL_curstackinfo->si_cxstack);
3379 Safefree(PL_curstackinfo);
3380 PL_curstackinfo = p;
e336de0d 3381 }
3280af22
NIS
3382 Safefree(PL_tmps_stack);
3383 Safefree(PL_markstack);
3384 Safefree(PL_scopestack);
3385 Safefree(PL_savestack);
3386 Safefree(PL_retstack);
378cc40b 3387}
33b78306 3388
76e3520e 3389STATIC void
cea2e8a9 3390S_init_lexer(pTHX)
8990e307 3391{
06039172 3392 PerlIO *tmpfp;
3280af22
NIS
3393 tmpfp = PL_rsfp;
3394 PL_rsfp = Nullfp;
3395 lex_start(PL_linestr);
3396 PL_rsfp = tmpfp;
79cb57f6 3397 PL_subname = newSVpvn("main",4);
8990e307
LW
3398}
3399
76e3520e 3400STATIC void
cea2e8a9 3401S_init_predump_symbols(pTHX)
45d8adaa 3402{
93a17b20 3403 GV *tmpgv;
af8c498a 3404 IO *io;
79072805 3405
864dbfa3 3406 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3280af22
NIS
3407 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3408 GvMULTI_on(PL_stdingv);
af8c498a 3409 io = GvIOp(PL_stdingv);
a04651f4 3410 IoTYPE(io) = IoTYPE_RDONLY;
af8c498a 3411 IoIFP(io) = PerlIO_stdin();
adbc6bb1 3412 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
a5f75d66 3413 GvMULTI_on(tmpgv);
af8c498a 3414 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3415
85e6fe83 3416 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
a5f75d66 3417 GvMULTI_on(tmpgv);
af8c498a 3418 io = GvIOp(tmpgv);
a04651f4 3419 IoTYPE(io) = IoTYPE_WRONLY;
af8c498a 3420 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
4633a7c4 3421 setdefout(tmpgv);
adbc6bb1 3422 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
a5f75d66 3423 GvMULTI_on(tmpgv);
af8c498a 3424 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3425
bf49b057
GS
3426 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3427 GvMULTI_on(PL_stderrgv);
3428 io = GvIOp(PL_stderrgv);
a04651f4 3429 IoTYPE(io) = IoTYPE_WRONLY;
af8c498a 3430 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
adbc6bb1 3431 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
a5f75d66 3432 GvMULTI_on(tmpgv);
af8c498a 3433 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3434
3280af22 3435 PL_statname = NEWSV(66,0); /* last filename we did stat on */
ab821d7f 3436
bf4acbe4
GS
3437 if (PL_osname)
3438 Safefree(PL_osname);
3439 PL_osname = savepv(OSNAME);
79072805 3440}
33b78306 3441
a11ec5a9
RGS
3442void
3443Perl_init_argv_symbols(pTHX_ register int argc, register char **argv)
33b78306 3444{
79072805 3445 char *s;
79072805 3446 argc--,argv++; /* skip name of script */
3280af22 3447 if (PL_doswitches) {
79072805
LW
3448 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3449 if (!argv[0][1])
3450 break;
379d538a 3451 if (argv[0][1] == '-' && !argv[0][2]) {
79072805
LW
3452 argc--,argv++;
3453 break;
3454 }
155aba94 3455 if ((s = strchr(argv[0], '='))) {
79072805 3456 *s++ = '\0';
85e6fe83 3457 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
79072805
LW
3458 }
3459 else
85e6fe83 3460 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
fe14fcc3 3461 }
79072805 3462 }
a11ec5a9
RGS
3463 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3464 GvMULTI_on(PL_argvgv);
3465 (void)gv_AVadd(PL_argvgv);
3466 av_clear(GvAVn(PL_argvgv));
3467 for (; argc > 0; argc--,argv++) {
3468 SV *sv = newSVpv(argv[0],0);
3469 av_push(GvAVn(PL_argvgv),sv);
ce81ff12
JH
3470 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
3471 if (PL_unicode & PERL_UNICODE_ARGV_FLAG)
3472 SvUTF8_on(sv);
3473 }
a05d7ebb
JH
3474 if (PL_unicode & PERL_UNICODE_WIDESYSCALLS_FLAG) /* Sarathy? */
3475 (void)sv_utf8_decode(sv);
a11ec5a9
RGS
3476 }
3477 }
3478}
3479
04fee9b5
NIS
3480#ifdef HAS_PROCSELFEXE
3481/* This is a function so that we don't hold on to MAXPATHLEN
8338e367 3482 bytes of stack longer than necessary
04fee9b5
NIS
3483 */
3484STATIC void