| 1 | /* perl.c |
| 2 | * |
| 3 | * Copyright (c) 1987-2000 Larry Wall |
| 4 | * |
| 5 | * You may distribute under the terms of either the GNU General Public |
| 6 | * License or the Artistic License, as specified in the README file. |
| 7 | * |
| 8 | */ |
| 9 | |
| 10 | /* |
| 11 | * "A ship then new they built for him/of mithril and of elven glass" --Bilbo |
| 12 | */ |
| 13 | |
| 14 | #include "EXTERN.h" |
| 15 | #define PERL_IN_PERL_C |
| 16 | #include "perl.h" |
| 17 | #include "patchlevel.h" /* for local_patches */ |
| 18 | |
| 19 | /* XXX If this causes problems, set i_unistd=undef in the hint file. */ |
| 20 | #ifdef I_UNISTD |
| 21 | #include <unistd.h> |
| 22 | #endif |
| 23 | |
| 24 | #if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) |
| 25 | char *getenv (char *); /* Usually in <stdlib.h> */ |
| 26 | #endif |
| 27 | |
| 28 | static I32 read_e_script(pTHXo_ int idx, SV *buf_sv, int maxlen); |
| 29 | |
| 30 | #ifdef IAMSUID |
| 31 | #ifndef DOSUID |
| 32 | #define DOSUID |
| 33 | #endif |
| 34 | #endif |
| 35 | |
| 36 | #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW |
| 37 | #ifdef DOSUID |
| 38 | #undef DOSUID |
| 39 | #endif |
| 40 | #endif |
| 41 | |
| 42 | #ifdef PERL_OBJECT |
| 43 | #define perl_construct Perl_construct |
| 44 | #define perl_parse Perl_parse |
| 45 | #define perl_run Perl_run |
| 46 | #define perl_destruct Perl_destruct |
| 47 | #define perl_free Perl_free |
| 48 | #endif |
| 49 | |
| 50 | #if defined(USE_THREADS) |
| 51 | # define INIT_TLS_AND_INTERP \ |
| 52 | STMT_START { \ |
| 53 | if (!PL_curinterp) { \ |
| 54 | PERL_SET_INTERP(my_perl); \ |
| 55 | INIT_THREADS; \ |
| 56 | ALLOC_THREAD_KEY; \ |
| 57 | } \ |
| 58 | } STMT_END |
| 59 | #else |
| 60 | # if defined(USE_ITHREADS) |
| 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; \ |
| 67 | PERL_SET_THX(my_perl); \ |
| 68 | OP_REFCNT_INIT; \ |
| 69 | } \ |
| 70 | else { \ |
| 71 | PERL_SET_THX(my_perl); \ |
| 72 | } \ |
| 73 | } STMT_END |
| 74 | # else |
| 75 | # define INIT_TLS_AND_INTERP \ |
| 76 | STMT_START { \ |
| 77 | if (!PL_curinterp) { \ |
| 78 | PERL_SET_INTERP(my_perl); \ |
| 79 | } \ |
| 80 | PERL_SET_THX(my_perl); \ |
| 81 | } STMT_END |
| 82 | # endif |
| 83 | #endif |
| 84 | |
| 85 | #ifdef PERL_IMPLICIT_SYS |
| 86 | PerlInterpreter * |
| 87 | perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS, |
| 88 | struct IPerlMem* ipMP, struct IPerlEnv* ipE, |
| 89 | struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO, |
| 90 | struct IPerlDir* ipD, struct IPerlSock* ipS, |
| 91 | struct IPerlProc* ipP) |
| 92 | { |
| 93 | PerlInterpreter *my_perl; |
| 94 | #ifdef PERL_OBJECT |
| 95 | my_perl = (PerlInterpreter*)new(ipM) CPerlObj(ipM, ipMS, ipMP, ipE, ipStd, |
| 96 | ipLIO, ipD, ipS, ipP); |
| 97 | INIT_TLS_AND_INTERP; |
| 98 | #else |
| 99 | /* New() needs interpreter, so call malloc() instead */ |
| 100 | my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter)); |
| 101 | INIT_TLS_AND_INTERP; |
| 102 | Zero(my_perl, 1, PerlInterpreter); |
| 103 | PL_Mem = ipM; |
| 104 | PL_MemShared = ipMS; |
| 105 | PL_MemParse = ipMP; |
| 106 | PL_Env = ipE; |
| 107 | PL_StdIO = ipStd; |
| 108 | PL_LIO = ipLIO; |
| 109 | PL_Dir = ipD; |
| 110 | PL_Sock = ipS; |
| 111 | PL_Proc = ipP; |
| 112 | #endif |
| 113 | |
| 114 | return my_perl; |
| 115 | } |
| 116 | #else |
| 117 | |
| 118 | /* |
| 119 | =for apidoc perl_alloc |
| 120 | |
| 121 | Allocates a new Perl interpreter. See L<perlembed>. |
| 122 | |
| 123 | =cut |
| 124 | */ |
| 125 | |
| 126 | PerlInterpreter * |
| 127 | perl_alloc(void) |
| 128 | { |
| 129 | PerlInterpreter *my_perl; |
| 130 | |
| 131 | /* New() needs interpreter, so call malloc() instead */ |
| 132 | my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter)); |
| 133 | |
| 134 | INIT_TLS_AND_INTERP; |
| 135 | Zero(my_perl, 1, PerlInterpreter); |
| 136 | return my_perl; |
| 137 | } |
| 138 | #endif /* PERL_IMPLICIT_SYS */ |
| 139 | |
| 140 | /* |
| 141 | =for apidoc perl_construct |
| 142 | |
| 143 | Initializes a new Perl interpreter. See L<perlembed>. |
| 144 | |
| 145 | =cut |
| 146 | */ |
| 147 | |
| 148 | void |
| 149 | perl_construct(pTHXx) |
| 150 | { |
| 151 | #ifdef USE_THREADS |
| 152 | int i; |
| 153 | #ifndef FAKE_THREADS |
| 154 | struct perl_thread *thr = NULL; |
| 155 | #endif /* FAKE_THREADS */ |
| 156 | #endif /* USE_THREADS */ |
| 157 | |
| 158 | #ifdef MULTIPLICITY |
| 159 | init_interp(); |
| 160 | PL_perl_destruct_level = 1; |
| 161 | #else |
| 162 | if (PL_perl_destruct_level > 0) |
| 163 | init_interp(); |
| 164 | #endif |
| 165 | |
| 166 | /* Init the real globals (and main thread)? */ |
| 167 | if (!PL_linestr) { |
| 168 | #ifdef USE_THREADS |
| 169 | MUTEX_INIT(&PL_sv_mutex); |
| 170 | /* |
| 171 | * Safe to use basic SV functions from now on (though |
| 172 | * not things like mortals or tainting yet). |
| 173 | */ |
| 174 | MUTEX_INIT(&PL_eval_mutex); |
| 175 | COND_INIT(&PL_eval_cond); |
| 176 | MUTEX_INIT(&PL_threads_mutex); |
| 177 | COND_INIT(&PL_nthreads_cond); |
| 178 | # ifdef EMULATE_ATOMIC_REFCOUNTS |
| 179 | MUTEX_INIT(&PL_svref_mutex); |
| 180 | # endif /* EMULATE_ATOMIC_REFCOUNTS */ |
| 181 | |
| 182 | MUTEX_INIT(&PL_cred_mutex); |
| 183 | |
| 184 | thr = init_main_thread(); |
| 185 | #endif /* USE_THREADS */ |
| 186 | |
| 187 | #ifdef PERL_FLEXIBLE_EXCEPTIONS |
| 188 | PL_protect = MEMBER_TO_FPTR(Perl_default_protect); /* for exceptions */ |
| 189 | #endif |
| 190 | |
| 191 | PL_curcop = &PL_compiling; /* needed by ckWARN, right away */ |
| 192 | |
| 193 | PL_linestr = NEWSV(65,79); |
| 194 | sv_upgrade(PL_linestr,SVt_PVIV); |
| 195 | |
| 196 | if (!SvREADONLY(&PL_sv_undef)) { |
| 197 | /* set read-only and try to insure than we wont see REFCNT==0 |
| 198 | very often */ |
| 199 | |
| 200 | SvREADONLY_on(&PL_sv_undef); |
| 201 | SvREFCNT(&PL_sv_undef) = (~(U32)0)/2; |
| 202 | |
| 203 | sv_setpv(&PL_sv_no,PL_No); |
| 204 | SvNV(&PL_sv_no); |
| 205 | SvREADONLY_on(&PL_sv_no); |
| 206 | SvREFCNT(&PL_sv_no) = (~(U32)0)/2; |
| 207 | |
| 208 | sv_setpv(&PL_sv_yes,PL_Yes); |
| 209 | SvNV(&PL_sv_yes); |
| 210 | SvREADONLY_on(&PL_sv_yes); |
| 211 | SvREFCNT(&PL_sv_yes) = (~(U32)0)/2; |
| 212 | } |
| 213 | |
| 214 | #ifdef PERL_OBJECT |
| 215 | /* TODO: */ |
| 216 | /* PL_sighandlerp = sighandler; */ |
| 217 | #else |
| 218 | PL_sighandlerp = Perl_sighandler; |
| 219 | #endif |
| 220 | PL_pidstatus = newHV(); |
| 221 | |
| 222 | #ifdef MSDOS |
| 223 | /* |
| 224 | * There is no way we can refer to them from Perl so close them to save |
| 225 | * space. The other alternative would be to provide STDAUX and STDPRN |
| 226 | * filehandles. |
| 227 | */ |
| 228 | (void)fclose(stdaux); |
| 229 | (void)fclose(stdprn); |
| 230 | #endif |
| 231 | } |
| 232 | |
| 233 | PL_nrs = newSVpvn("\n", 1); |
| 234 | PL_rs = SvREFCNT_inc(PL_nrs); |
| 235 | |
| 236 | init_stacks(); |
| 237 | |
| 238 | init_ids(); |
| 239 | PL_lex_state = LEX_NOTPARSING; |
| 240 | |
| 241 | JMPENV_BOOTSTRAP; |
| 242 | STATUS_ALL_SUCCESS; |
| 243 | |
| 244 | init_i18nl10n(1); |
| 245 | SET_NUMERIC_STANDARD(); |
| 246 | |
| 247 | { |
| 248 | U8 *s; |
| 249 | PL_patchlevel = NEWSV(0,4); |
| 250 | (void)SvUPGRADE(PL_patchlevel, SVt_PVNV); |
| 251 | if (PERL_REVISION > 127 || PERL_VERSION > 127 || PERL_SUBVERSION > 127) |
| 252 | SvGROW(PL_patchlevel, UTF8_MAXLEN*3+1); |
| 253 | s = (U8*)SvPVX(PL_patchlevel); |
| 254 | s = uv_to_utf8(s, (UV)PERL_REVISION); |
| 255 | s = uv_to_utf8(s, (UV)PERL_VERSION); |
| 256 | s = uv_to_utf8(s, (UV)PERL_SUBVERSION); |
| 257 | *s = '\0'; |
| 258 | SvCUR_set(PL_patchlevel, s - (U8*)SvPVX(PL_patchlevel)); |
| 259 | SvPOK_on(PL_patchlevel); |
| 260 | SvNVX(PL_patchlevel) = (NV)PERL_REVISION |
| 261 | + ((NV)PERL_VERSION / (NV)1000) |
| 262 | #if defined(PERL_SUBVERSION) && PERL_SUBVERSION > 0 |
| 263 | + ((NV)PERL_SUBVERSION / (NV)1000000) |
| 264 | #endif |
| 265 | ; |
| 266 | SvNOK_on(PL_patchlevel); /* dual valued */ |
| 267 | SvUTF8_on(PL_patchlevel); |
| 268 | SvREADONLY_on(PL_patchlevel); |
| 269 | } |
| 270 | |
| 271 | #if defined(LOCAL_PATCH_COUNT) |
| 272 | PL_localpatches = local_patches; /* For possible -v */ |
| 273 | #endif |
| 274 | |
| 275 | PerlIO_init(); /* Hook to IO system */ |
| 276 | |
| 277 | PL_fdpid = newAV(); /* for remembering popen pids by fd */ |
| 278 | PL_modglobal = newHV(); /* pointers to per-interpreter module globals */ |
| 279 | PL_errors = newSVpvn("",0); |
| 280 | |
| 281 | ENTER; |
| 282 | } |
| 283 | |
| 284 | /* |
| 285 | =for apidoc perl_destruct |
| 286 | |
| 287 | Shuts down a Perl interpreter. See L<perlembed>. |
| 288 | |
| 289 | =cut |
| 290 | */ |
| 291 | |
| 292 | void |
| 293 | perl_destruct(pTHXx) |
| 294 | { |
| 295 | dTHR; |
| 296 | int destruct_level; /* 0=none, 1=full, 2=full with checks */ |
| 297 | I32 last_sv_count; |
| 298 | HV *hv; |
| 299 | #ifdef USE_THREADS |
| 300 | Thread t; |
| 301 | dTHX; |
| 302 | #endif /* USE_THREADS */ |
| 303 | |
| 304 | /* wait for all pseudo-forked children to finish */ |
| 305 | PERL_WAIT_FOR_CHILDREN; |
| 306 | |
| 307 | #ifdef USE_THREADS |
| 308 | #ifndef FAKE_THREADS |
| 309 | /* Pass 1 on any remaining threads: detach joinables, join zombies */ |
| 310 | retry_cleanup: |
| 311 | MUTEX_LOCK(&PL_threads_mutex); |
| 312 | DEBUG_S(PerlIO_printf(Perl_debug_log, |
| 313 | "perl_destruct: waiting for %d threads...\n", |
| 314 | PL_nthreads - 1)); |
| 315 | for (t = thr->next; t != thr; t = t->next) { |
| 316 | MUTEX_LOCK(&t->mutex); |
| 317 | switch (ThrSTATE(t)) { |
| 318 | AV *av; |
| 319 | case THRf_ZOMBIE: |
| 320 | DEBUG_S(PerlIO_printf(Perl_debug_log, |
| 321 | "perl_destruct: joining zombie %p\n", t)); |
| 322 | ThrSETSTATE(t, THRf_DEAD); |
| 323 | MUTEX_UNLOCK(&t->mutex); |
| 324 | PL_nthreads--; |
| 325 | /* |
| 326 | * The SvREFCNT_dec below may take a long time (e.g. av |
| 327 | * may contain an object scalar whose destructor gets |
| 328 | * called) so we have to unlock threads_mutex and start |
| 329 | * all over again. |
| 330 | */ |
| 331 | MUTEX_UNLOCK(&PL_threads_mutex); |
| 332 | JOIN(t, &av); |
| 333 | SvREFCNT_dec((SV*)av); |
| 334 | DEBUG_S(PerlIO_printf(Perl_debug_log, |
| 335 | "perl_destruct: joined zombie %p OK\n", t)); |
| 336 | goto retry_cleanup; |
| 337 | case THRf_R_JOINABLE: |
| 338 | DEBUG_S(PerlIO_printf(Perl_debug_log, |
| 339 | "perl_destruct: detaching thread %p\n", t)); |
| 340 | ThrSETSTATE(t, THRf_R_DETACHED); |
| 341 | /* |
| 342 | * We unlock threads_mutex and t->mutex in the opposite order |
| 343 | * from which we locked them just so that DETACH won't |
| 344 | * deadlock if it panics. It's only a breach of good style |
| 345 | * not a bug since they are unlocks not locks. |
| 346 | */ |
| 347 | MUTEX_UNLOCK(&PL_threads_mutex); |
| 348 | DETACH(t); |
| 349 | MUTEX_UNLOCK(&t->mutex); |
| 350 | goto retry_cleanup; |
| 351 | default: |
| 352 | DEBUG_S(PerlIO_printf(Perl_debug_log, |
| 353 | "perl_destruct: ignoring %p (state %u)\n", |
| 354 | t, ThrSTATE(t))); |
| 355 | MUTEX_UNLOCK(&t->mutex); |
| 356 | /* fall through and out */ |
| 357 | } |
| 358 | } |
| 359 | /* We leave the above "Pass 1" loop with threads_mutex still locked */ |
| 360 | |
| 361 | /* Pass 2 on remaining threads: wait for the thread count to drop to one */ |
| 362 | while (PL_nthreads > 1) |
| 363 | { |
| 364 | DEBUG_S(PerlIO_printf(Perl_debug_log, |
| 365 | "perl_destruct: final wait for %d threads\n", |
| 366 | PL_nthreads - 1)); |
| 367 | COND_WAIT(&PL_nthreads_cond, &PL_threads_mutex); |
| 368 | } |
| 369 | /* At this point, we're the last thread */ |
| 370 | MUTEX_UNLOCK(&PL_threads_mutex); |
| 371 | DEBUG_S(PerlIO_printf(Perl_debug_log, "perl_destruct: armageddon has arrived\n")); |
| 372 | MUTEX_DESTROY(&PL_threads_mutex); |
| 373 | COND_DESTROY(&PL_nthreads_cond); |
| 374 | #endif /* !defined(FAKE_THREADS) */ |
| 375 | #endif /* USE_THREADS */ |
| 376 | |
| 377 | destruct_level = PL_perl_destruct_level; |
| 378 | #ifdef DEBUGGING |
| 379 | { |
| 380 | char *s; |
| 381 | if ((s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL"))) { |
| 382 | int i = atoi(s); |
| 383 | if (destruct_level < i) |
| 384 | destruct_level = i; |
| 385 | } |
| 386 | } |
| 387 | #endif |
| 388 | |
| 389 | LEAVE; |
| 390 | FREETMPS; |
| 391 | |
| 392 | /* We must account for everything. */ |
| 393 | |
| 394 | /* Destroy the main CV and syntax tree */ |
| 395 | if (PL_main_root) { |
| 396 | PL_curpad = AvARRAY(PL_comppad); |
| 397 | op_free(PL_main_root); |
| 398 | PL_main_root = Nullop; |
| 399 | } |
| 400 | PL_curcop = &PL_compiling; |
| 401 | PL_main_start = Nullop; |
| 402 | SvREFCNT_dec(PL_main_cv); |
| 403 | PL_main_cv = Nullcv; |
| 404 | PL_dirty = TRUE; |
| 405 | |
| 406 | if (PL_sv_objcount) { |
| 407 | /* |
| 408 | * Try to destruct global references. We do this first so that the |
| 409 | * destructors and destructees still exist. Some sv's might remain. |
| 410 | * Non-referenced objects are on their own. |
| 411 | */ |
| 412 | sv_clean_objs(); |
| 413 | } |
| 414 | |
| 415 | /* unhook hooks which will soon be, or use, destroyed data */ |
| 416 | SvREFCNT_dec(PL_warnhook); |
| 417 | PL_warnhook = Nullsv; |
| 418 | SvREFCNT_dec(PL_diehook); |
| 419 | PL_diehook = Nullsv; |
| 420 | |
| 421 | /* call exit list functions */ |
| 422 | while (PL_exitlistlen-- > 0) |
| 423 | PL_exitlist[PL_exitlistlen].fn(aTHXo_ PL_exitlist[PL_exitlistlen].ptr); |
| 424 | |
| 425 | Safefree(PL_exitlist); |
| 426 | |
| 427 | if (destruct_level == 0){ |
| 428 | |
| 429 | DEBUG_P(debprofdump()); |
| 430 | |
| 431 | /* The exit() function will do everything that needs doing. */ |
| 432 | return; |
| 433 | } |
| 434 | |
| 435 | /* loosen bonds of global variables */ |
| 436 | |
| 437 | if(PL_rsfp) { |
| 438 | (void)PerlIO_close(PL_rsfp); |
| 439 | PL_rsfp = Nullfp; |
| 440 | } |
| 441 | |
| 442 | /* Filters for program text */ |
| 443 | SvREFCNT_dec(PL_rsfp_filters); |
| 444 | PL_rsfp_filters = Nullav; |
| 445 | |
| 446 | /* switches */ |
| 447 | PL_preprocess = FALSE; |
| 448 | PL_minus_n = FALSE; |
| 449 | PL_minus_p = FALSE; |
| 450 | PL_minus_l = FALSE; |
| 451 | PL_minus_a = FALSE; |
| 452 | PL_minus_F = FALSE; |
| 453 | PL_doswitches = FALSE; |
| 454 | PL_dowarn = G_WARN_OFF; |
| 455 | PL_doextract = FALSE; |
| 456 | PL_sawampersand = FALSE; /* must save all match strings */ |
| 457 | PL_unsafe = FALSE; |
| 458 | |
| 459 | Safefree(PL_inplace); |
| 460 | PL_inplace = Nullch; |
| 461 | SvREFCNT_dec(PL_patchlevel); |
| 462 | |
| 463 | if (PL_e_script) { |
| 464 | SvREFCNT_dec(PL_e_script); |
| 465 | PL_e_script = Nullsv; |
| 466 | } |
| 467 | |
| 468 | /* magical thingies */ |
| 469 | |
| 470 | Safefree(PL_ofs); /* $, */ |
| 471 | PL_ofs = Nullch; |
| 472 | |
| 473 | Safefree(PL_ors); /* $\ */ |
| 474 | PL_ors = Nullch; |
| 475 | |
| 476 | SvREFCNT_dec(PL_rs); /* $/ */ |
| 477 | PL_rs = Nullsv; |
| 478 | |
| 479 | SvREFCNT_dec(PL_nrs); /* $/ helper */ |
| 480 | PL_nrs = Nullsv; |
| 481 | |
| 482 | PL_multiline = 0; /* $* */ |
| 483 | Safefree(PL_osname); /* $^O */ |
| 484 | PL_osname = Nullch; |
| 485 | |
| 486 | SvREFCNT_dec(PL_statname); |
| 487 | PL_statname = Nullsv; |
| 488 | PL_statgv = Nullgv; |
| 489 | |
| 490 | /* defgv, aka *_ should be taken care of elsewhere */ |
| 491 | |
| 492 | /* clean up after study() */ |
| 493 | SvREFCNT_dec(PL_lastscream); |
| 494 | PL_lastscream = Nullsv; |
| 495 | Safefree(PL_screamfirst); |
| 496 | PL_screamfirst = 0; |
| 497 | Safefree(PL_screamnext); |
| 498 | PL_screamnext = 0; |
| 499 | |
| 500 | /* float buffer */ |
| 501 | Safefree(PL_efloatbuf); |
| 502 | PL_efloatbuf = Nullch; |
| 503 | PL_efloatsize = 0; |
| 504 | |
| 505 | /* startup and shutdown function lists */ |
| 506 | SvREFCNT_dec(PL_beginav); |
| 507 | SvREFCNT_dec(PL_endav); |
| 508 | SvREFCNT_dec(PL_checkav); |
| 509 | SvREFCNT_dec(PL_initav); |
| 510 | PL_beginav = Nullav; |
| 511 | PL_endav = Nullav; |
| 512 | PL_checkav = Nullav; |
| 513 | PL_initav = Nullav; |
| 514 | |
| 515 | /* shortcuts just get cleared */ |
| 516 | PL_envgv = Nullgv; |
| 517 | PL_incgv = Nullgv; |
| 518 | PL_hintgv = Nullgv; |
| 519 | PL_errgv = Nullgv; |
| 520 | PL_argvgv = Nullgv; |
| 521 | PL_argvoutgv = Nullgv; |
| 522 | PL_stdingv = Nullgv; |
| 523 | PL_stderrgv = Nullgv; |
| 524 | PL_last_in_gv = Nullgv; |
| 525 | PL_replgv = Nullgv; |
| 526 | PL_debstash = Nullhv; |
| 527 | |
| 528 | /* reset so print() ends up where we expect */ |
| 529 | setdefout(Nullgv); |
| 530 | |
| 531 | SvREFCNT_dec(PL_argvout_stack); |
| 532 | PL_argvout_stack = Nullav; |
| 533 | |
| 534 | SvREFCNT_dec(PL_modglobal); |
| 535 | PL_modglobal = Nullhv; |
| 536 | SvREFCNT_dec(PL_preambleav); |
| 537 | PL_preambleav = Nullav; |
| 538 | SvREFCNT_dec(PL_subname); |
| 539 | PL_subname = Nullsv; |
| 540 | SvREFCNT_dec(PL_linestr); |
| 541 | PL_linestr = Nullsv; |
| 542 | SvREFCNT_dec(PL_pidstatus); |
| 543 | PL_pidstatus = Nullhv; |
| 544 | SvREFCNT_dec(PL_toptarget); |
| 545 | PL_toptarget = Nullsv; |
| 546 | SvREFCNT_dec(PL_bodytarget); |
| 547 | PL_bodytarget = Nullsv; |
| 548 | PL_formtarget = Nullsv; |
| 549 | |
| 550 | /* free locale stuff */ |
| 551 | #ifdef USE_LOCALE_COLLATE |
| 552 | Safefree(PL_collation_name); |
| 553 | PL_collation_name = Nullch; |
| 554 | #endif |
| 555 | |
| 556 | #ifdef USE_LOCALE_NUMERIC |
| 557 | Safefree(PL_numeric_name); |
| 558 | PL_numeric_name = Nullch; |
| 559 | #endif |
| 560 | |
| 561 | /* clear utf8 character classes */ |
| 562 | SvREFCNT_dec(PL_utf8_alnum); |
| 563 | SvREFCNT_dec(PL_utf8_alnumc); |
| 564 | SvREFCNT_dec(PL_utf8_ascii); |
| 565 | SvREFCNT_dec(PL_utf8_alpha); |
| 566 | SvREFCNT_dec(PL_utf8_space); |
| 567 | SvREFCNT_dec(PL_utf8_cntrl); |
| 568 | SvREFCNT_dec(PL_utf8_graph); |
| 569 | SvREFCNT_dec(PL_utf8_digit); |
| 570 | SvREFCNT_dec(PL_utf8_upper); |
| 571 | SvREFCNT_dec(PL_utf8_lower); |
| 572 | SvREFCNT_dec(PL_utf8_print); |
| 573 | SvREFCNT_dec(PL_utf8_punct); |
| 574 | SvREFCNT_dec(PL_utf8_xdigit); |
| 575 | SvREFCNT_dec(PL_utf8_mark); |
| 576 | SvREFCNT_dec(PL_utf8_toupper); |
| 577 | SvREFCNT_dec(PL_utf8_tolower); |
| 578 | PL_utf8_alnum = Nullsv; |
| 579 | PL_utf8_alnumc = Nullsv; |
| 580 | PL_utf8_ascii = Nullsv; |
| 581 | PL_utf8_alpha = Nullsv; |
| 582 | PL_utf8_space = Nullsv; |
| 583 | PL_utf8_cntrl = Nullsv; |
| 584 | PL_utf8_graph = Nullsv; |
| 585 | PL_utf8_digit = Nullsv; |
| 586 | PL_utf8_upper = Nullsv; |
| 587 | PL_utf8_lower = Nullsv; |
| 588 | PL_utf8_print = Nullsv; |
| 589 | PL_utf8_punct = Nullsv; |
| 590 | PL_utf8_xdigit = Nullsv; |
| 591 | PL_utf8_mark = Nullsv; |
| 592 | PL_utf8_toupper = Nullsv; |
| 593 | PL_utf8_totitle = Nullsv; |
| 594 | PL_utf8_tolower = Nullsv; |
| 595 | |
| 596 | if (!specialWARN(PL_compiling.cop_warnings)) |
| 597 | SvREFCNT_dec(PL_compiling.cop_warnings); |
| 598 | PL_compiling.cop_warnings = Nullsv; |
| 599 | #ifndef USE_ITHREADS |
| 600 | SvREFCNT_dec(CopFILEGV(&PL_compiling)); |
| 601 | CopFILEGV_set(&PL_compiling, Nullgv); |
| 602 | #endif |
| 603 | |
| 604 | /* Prepare to destruct main symbol table. */ |
| 605 | |
| 606 | hv = PL_defstash; |
| 607 | PL_defstash = 0; |
| 608 | SvREFCNT_dec(hv); |
| 609 | SvREFCNT_dec(PL_curstname); |
| 610 | PL_curstname = Nullsv; |
| 611 | |
| 612 | /* clear queued errors */ |
| 613 | SvREFCNT_dec(PL_errors); |
| 614 | PL_errors = Nullsv; |
| 615 | |
| 616 | FREETMPS; |
| 617 | if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) { |
| 618 | if (PL_scopestack_ix != 0) |
| 619 | Perl_warner(aTHX_ WARN_INTERNAL, |
| 620 | "Unbalanced scopes: %ld more ENTERs than LEAVEs\n", |
| 621 | (long)PL_scopestack_ix); |
| 622 | if (PL_savestack_ix != 0) |
| 623 | Perl_warner(aTHX_ WARN_INTERNAL, |
| 624 | "Unbalanced saves: %ld more saves than restores\n", |
| 625 | (long)PL_savestack_ix); |
| 626 | if (PL_tmps_floor != -1) |
| 627 | Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced tmps: %ld more allocs than frees\n", |
| 628 | (long)PL_tmps_floor + 1); |
| 629 | if (cxstack_ix != -1) |
| 630 | Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced context: %ld more PUSHes than POPs\n", |
| 631 | (long)cxstack_ix + 1); |
| 632 | } |
| 633 | |
| 634 | /* Now absolutely destruct everything, somehow or other, loops or no. */ |
| 635 | last_sv_count = 0; |
| 636 | SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */ |
| 637 | SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */ |
| 638 | while (PL_sv_count != 0 && PL_sv_count != last_sv_count) { |
| 639 | last_sv_count = PL_sv_count; |
| 640 | sv_clean_all(); |
| 641 | } |
| 642 | SvFLAGS(PL_fdpid) &= ~SVTYPEMASK; |
| 643 | SvFLAGS(PL_fdpid) |= SVt_PVAV; |
| 644 | SvFLAGS(PL_strtab) &= ~SVTYPEMASK; |
| 645 | SvFLAGS(PL_strtab) |= SVt_PVHV; |
| 646 | |
| 647 | AvREAL_off(PL_fdpid); /* no surviving entries */ |
| 648 | SvREFCNT_dec(PL_fdpid); /* needed in io_close() */ |
| 649 | PL_fdpid = Nullav; |
| 650 | |
| 651 | /* Destruct the global string table. */ |
| 652 | { |
| 653 | /* Yell and reset the HeVAL() slots that are still holding refcounts, |
| 654 | * so that sv_free() won't fail on them. |
| 655 | */ |
| 656 | I32 riter; |
| 657 | I32 max; |
| 658 | HE *hent; |
| 659 | HE **array; |
| 660 | |
| 661 | riter = 0; |
| 662 | max = HvMAX(PL_strtab); |
| 663 | array = HvARRAY(PL_strtab); |
| 664 | hent = array[0]; |
| 665 | for (;;) { |
| 666 | if (hent && ckWARN_d(WARN_INTERNAL)) { |
| 667 | Perl_warner(aTHX_ WARN_INTERNAL, |
| 668 | "Unbalanced string table refcount: (%d) for \"%s\"", |
| 669 | HeVAL(hent) - Nullsv, HeKEY(hent)); |
| 670 | HeVAL(hent) = Nullsv; |
| 671 | hent = HeNEXT(hent); |
| 672 | } |
| 673 | if (!hent) { |
| 674 | if (++riter > max) |
| 675 | break; |
| 676 | hent = array[riter]; |
| 677 | } |
| 678 | } |
| 679 | } |
| 680 | SvREFCNT_dec(PL_strtab); |
| 681 | |
| 682 | /* free special SVs */ |
| 683 | |
| 684 | SvREFCNT(&PL_sv_yes) = 0; |
| 685 | sv_clear(&PL_sv_yes); |
| 686 | SvANY(&PL_sv_yes) = NULL; |
| 687 | SvFLAGS(&PL_sv_yes) = 0; |
| 688 | |
| 689 | SvREFCNT(&PL_sv_no) = 0; |
| 690 | sv_clear(&PL_sv_no); |
| 691 | SvANY(&PL_sv_no) = NULL; |
| 692 | SvFLAGS(&PL_sv_no) = 0; |
| 693 | |
| 694 | SvREFCNT(&PL_sv_undef) = 0; |
| 695 | SvREADONLY_off(&PL_sv_undef); |
| 696 | |
| 697 | if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL)) |
| 698 | Perl_warner(aTHX_ WARN_INTERNAL,"Scalars leaked: %ld\n", (long)PL_sv_count); |
| 699 | |
| 700 | sv_free_arenas(); |
| 701 | |
| 702 | /* No SVs have survived, need to clean out */ |
| 703 | Safefree(PL_origfilename); |
| 704 | Safefree(PL_reg_start_tmp); |
| 705 | if (PL_reg_curpm) |
| 706 | Safefree(PL_reg_curpm); |
| 707 | Safefree(PL_reg_poscache); |
| 708 | Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh)); |
| 709 | Safefree(PL_op_mask); |
| 710 | nuke_stacks(); |
| 711 | PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */ |
| 712 | |
| 713 | DEBUG_P(debprofdump()); |
| 714 | #ifdef USE_THREADS |
| 715 | MUTEX_DESTROY(&PL_strtab_mutex); |
| 716 | MUTEX_DESTROY(&PL_sv_mutex); |
| 717 | MUTEX_DESTROY(&PL_eval_mutex); |
| 718 | MUTEX_DESTROY(&PL_cred_mutex); |
| 719 | COND_DESTROY(&PL_eval_cond); |
| 720 | #ifdef EMULATE_ATOMIC_REFCOUNTS |
| 721 | MUTEX_DESTROY(&PL_svref_mutex); |
| 722 | #endif /* EMULATE_ATOMIC_REFCOUNTS */ |
| 723 | |
| 724 | /* As the penultimate thing, free the non-arena SV for thrsv */ |
| 725 | Safefree(SvPVX(PL_thrsv)); |
| 726 | Safefree(SvANY(PL_thrsv)); |
| 727 | Safefree(PL_thrsv); |
| 728 | PL_thrsv = Nullsv; |
| 729 | #endif /* USE_THREADS */ |
| 730 | |
| 731 | /* As the absolutely last thing, free the non-arena SV for mess() */ |
| 732 | |
| 733 | if (PL_mess_sv) { |
| 734 | /* it could have accumulated taint magic */ |
| 735 | if (SvTYPE(PL_mess_sv) >= SVt_PVMG) { |
| 736 | MAGIC* mg; |
| 737 | MAGIC* moremagic; |
| 738 | for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) { |
| 739 | moremagic = mg->mg_moremagic; |
| 740 | if (mg->mg_ptr && mg->mg_type != 'g' && mg->mg_len >= 0) |
| 741 | Safefree(mg->mg_ptr); |
| 742 | Safefree(mg); |
| 743 | } |
| 744 | } |
| 745 | /* we know that type >= SVt_PV */ |
| 746 | (void)SvOOK_off(PL_mess_sv); |
| 747 | Safefree(SvPVX(PL_mess_sv)); |
| 748 | Safefree(SvANY(PL_mess_sv)); |
| 749 | Safefree(PL_mess_sv); |
| 750 | PL_mess_sv = Nullsv; |
| 751 | } |
| 752 | } |
| 753 | |
| 754 | /* |
| 755 | =for apidoc perl_free |
| 756 | |
| 757 | Releases a Perl interpreter. See L<perlembed>. |
| 758 | |
| 759 | =cut |
| 760 | */ |
| 761 | |
| 762 | void |
| 763 | perl_free(pTHXx) |
| 764 | { |
| 765 | #if defined(PERL_OBJECT) |
| 766 | PerlMem_free(this); |
| 767 | #else |
| 768 | # if defined(PERL_IMPLICIT_SYS) && defined(WIN32) |
| 769 | void *host = w32_internal_host; |
| 770 | PerlMem_free(aTHXx); |
| 771 | win32_delete_internal_host(host); |
| 772 | # else |
| 773 | PerlMem_free(aTHXx); |
| 774 | # endif |
| 775 | #endif |
| 776 | } |
| 777 | |
| 778 | void |
| 779 | Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr) |
| 780 | { |
| 781 | Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry); |
| 782 | PL_exitlist[PL_exitlistlen].fn = fn; |
| 783 | PL_exitlist[PL_exitlistlen].ptr = ptr; |
| 784 | ++PL_exitlistlen; |
| 785 | } |
| 786 | |
| 787 | /* |
| 788 | =for apidoc perl_parse |
| 789 | |
| 790 | Tells a Perl interpreter to parse a Perl script. See L<perlembed>. |
| 791 | |
| 792 | =cut |
| 793 | */ |
| 794 | |
| 795 | int |
| 796 | perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env) |
| 797 | { |
| 798 | dTHR; |
| 799 | I32 oldscope; |
| 800 | int ret; |
| 801 | dJMPENV; |
| 802 | #ifdef USE_THREADS |
| 803 | dTHX; |
| 804 | #endif |
| 805 | |
| 806 | #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW |
| 807 | #ifdef IAMSUID |
| 808 | #undef IAMSUID |
| 809 | Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\ |
| 810 | setuid perl scripts securely.\n"); |
| 811 | #endif |
| 812 | #endif |
| 813 | |
| 814 | #if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__)) |
| 815 | _dyld_lookup_and_bind |
| 816 | ("__environ", (unsigned long *) &environ_pointer, NULL); |
| 817 | #endif /* environ */ |
| 818 | |
| 819 | PL_origargv = argv; |
| 820 | PL_origargc = argc; |
| 821 | #ifndef VMS /* VMS doesn't have environ array */ |
| 822 | PL_origenviron = environ; |
| 823 | #endif |
| 824 | |
| 825 | if (PL_do_undump) { |
| 826 | |
| 827 | /* Come here if running an undumped a.out. */ |
| 828 | |
| 829 | PL_origfilename = savepv(argv[0]); |
| 830 | PL_do_undump = FALSE; |
| 831 | cxstack_ix = -1; /* start label stack again */ |
| 832 | init_ids(); |
| 833 | init_postdump_symbols(argc,argv,env); |
| 834 | return 0; |
| 835 | } |
| 836 | |
| 837 | if (PL_main_root) { |
| 838 | PL_curpad = AvARRAY(PL_comppad); |
| 839 | op_free(PL_main_root); |
| 840 | PL_main_root = Nullop; |
| 841 | } |
| 842 | PL_main_start = Nullop; |
| 843 | SvREFCNT_dec(PL_main_cv); |
| 844 | PL_main_cv = Nullcv; |
| 845 | |
| 846 | time(&PL_basetime); |
| 847 | oldscope = PL_scopestack_ix; |
| 848 | PL_dowarn = G_WARN_OFF; |
| 849 | |
| 850 | #ifdef PERL_FLEXIBLE_EXCEPTIONS |
| 851 | CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit); |
| 852 | #else |
| 853 | JMPENV_PUSH(ret); |
| 854 | #endif |
| 855 | switch (ret) { |
| 856 | case 0: |
| 857 | #ifndef PERL_FLEXIBLE_EXCEPTIONS |
| 858 | parse_body(env,xsinit); |
| 859 | #endif |
| 860 | if (PL_checkav) |
| 861 | call_list(oldscope, PL_checkav); |
| 862 | ret = 0; |
| 863 | break; |
| 864 | case 1: |
| 865 | STATUS_ALL_FAILURE; |
| 866 | /* FALL THROUGH */ |
| 867 | case 2: |
| 868 | /* my_exit() was called */ |
| 869 | while (PL_scopestack_ix > oldscope) |
| 870 | LEAVE; |
| 871 | FREETMPS; |
| 872 | PL_curstash = PL_defstash; |
| 873 | if (PL_checkav) |
| 874 | call_list(oldscope, PL_checkav); |
| 875 | ret = STATUS_NATIVE_EXPORT; |
| 876 | break; |
| 877 | case 3: |
| 878 | PerlIO_printf(Perl_error_log, "panic: top_env\n"); |
| 879 | ret = 1; |
| 880 | break; |
| 881 | } |
| 882 | JMPENV_POP; |
| 883 | return ret; |
| 884 | } |
| 885 | |
| 886 | #ifdef PERL_FLEXIBLE_EXCEPTIONS |
| 887 | STATIC void * |
| 888 | S_vparse_body(pTHX_ va_list args) |
| 889 | { |
| 890 | char **env = va_arg(args, char**); |
| 891 | XSINIT_t xsinit = va_arg(args, XSINIT_t); |
| 892 | |
| 893 | return parse_body(env, xsinit); |
| 894 | } |
| 895 | #endif |
| 896 | |
| 897 | STATIC void * |
| 898 | S_parse_body(pTHX_ char **env, XSINIT_t xsinit) |
| 899 | { |
| 900 | dTHR; |
| 901 | int argc = PL_origargc; |
| 902 | char **argv = PL_origargv; |
| 903 | char *scriptname = NULL; |
| 904 | int fdscript = -1; |
| 905 | VOL bool dosearch = FALSE; |
| 906 | char *validarg = ""; |
| 907 | AV* comppadlist; |
| 908 | register SV *sv; |
| 909 | register char *s; |
| 910 | char *cddir = Nullch; |
| 911 | |
| 912 | sv_setpvn(PL_linestr,"",0); |
| 913 | sv = newSVpvn("",0); /* first used for -I flags */ |
| 914 | SAVEFREESV(sv); |
| 915 | init_main_stash(); |
| 916 | |
| 917 | for (argc--,argv++; argc > 0; argc--,argv++) { |
| 918 | if (argv[0][0] != '-' || !argv[0][1]) |
| 919 | break; |
| 920 | #ifdef DOSUID |
| 921 | if (*validarg) |
| 922 | validarg = " PHOOEY "; |
| 923 | else |
| 924 | validarg = argv[0]; |
| 925 | #endif |
| 926 | s = argv[0]+1; |
| 927 | reswitch: |
| 928 | switch (*s) { |
| 929 | case 'C': |
| 930 | #ifdef WIN32 |
| 931 | win32_argv2utf8(argc-1, argv+1); |
| 932 | /* FALL THROUGH */ |
| 933 | #endif |
| 934 | #ifndef PERL_STRICT_CR |
| 935 | case '\r': |
| 936 | #endif |
| 937 | case ' ': |
| 938 | case '0': |
| 939 | case 'F': |
| 940 | case 'a': |
| 941 | case 'c': |
| 942 | case 'd': |
| 943 | case 'D': |
| 944 | case 'h': |
| 945 | case 'i': |
| 946 | case 'l': |
| 947 | case 'M': |
| 948 | case 'm': |
| 949 | case 'n': |
| 950 | case 'p': |
| 951 | case 's': |
| 952 | case 'u': |
| 953 | case 'U': |
| 954 | case 'v': |
| 955 | case 'W': |
| 956 | case 'X': |
| 957 | case 'w': |
| 958 | if ((s = moreswitches(s))) |
| 959 | goto reswitch; |
| 960 | break; |
| 961 | |
| 962 | case 'T': |
| 963 | PL_tainting = TRUE; |
| 964 | s++; |
| 965 | goto reswitch; |
| 966 | |
| 967 | case 'e': |
| 968 | if (PL_euid != PL_uid || PL_egid != PL_gid) |
| 969 | Perl_croak(aTHX_ "No -e allowed in setuid scripts"); |
| 970 | if (!PL_e_script) { |
| 971 | PL_e_script = newSVpvn("",0); |
| 972 | filter_add(read_e_script, NULL); |
| 973 | } |
| 974 | if (*++s) |
| 975 | sv_catpv(PL_e_script, s); |
| 976 | else if (argv[1]) { |
| 977 | sv_catpv(PL_e_script, argv[1]); |
| 978 | argc--,argv++; |
| 979 | } |
| 980 | else |
| 981 | Perl_croak(aTHX_ "No code specified for -e"); |
| 982 | sv_catpv(PL_e_script, "\n"); |
| 983 | break; |
| 984 | |
| 985 | case 'I': /* -I handled both here and in moreswitches() */ |
| 986 | forbid_setid("-I"); |
| 987 | if (!*++s && (s=argv[1]) != Nullch) { |
| 988 | argc--,argv++; |
| 989 | } |
| 990 | if (s && *s) { |
| 991 | char *p; |
| 992 | STRLEN len = strlen(s); |
| 993 | p = savepvn(s, len); |
| 994 | incpush(p, TRUE, TRUE); |
| 995 | sv_catpvn(sv, "-I", 2); |
| 996 | sv_catpvn(sv, p, len); |
| 997 | sv_catpvn(sv, " ", 1); |
| 998 | Safefree(p); |
| 999 | } |
| 1000 | else |
| 1001 | Perl_croak(aTHX_ "No directory specified for -I"); |
| 1002 | break; |
| 1003 | case 'P': |
| 1004 | forbid_setid("-P"); |
| 1005 | PL_preprocess = TRUE; |
| 1006 | s++; |
| 1007 | goto reswitch; |
| 1008 | case 'S': |
| 1009 | forbid_setid("-S"); |
| 1010 | dosearch = TRUE; |
| 1011 | s++; |
| 1012 | goto reswitch; |
| 1013 | case 'V': |
| 1014 | if (!PL_preambleav) |
| 1015 | PL_preambleav = newAV(); |
| 1016 | av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0)); |
| 1017 | if (*++s != ':') { |
| 1018 | PL_Sv = newSVpv("print myconfig();",0); |
| 1019 | #ifdef VMS |
| 1020 | sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\","); |
| 1021 | #else |
| 1022 | sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\","); |
| 1023 | #endif |
| 1024 | sv_catpv(PL_Sv,"\" Compile-time options:"); |
| 1025 | # ifdef DEBUGGING |
| 1026 | sv_catpv(PL_Sv," DEBUGGING"); |
| 1027 | # endif |
| 1028 | # ifdef MULTIPLICITY |
| 1029 | sv_catpv(PL_Sv," MULTIPLICITY"); |
| 1030 | # endif |
| 1031 | # ifdef USE_THREADS |
| 1032 | sv_catpv(PL_Sv," USE_THREADS"); |
| 1033 | # endif |
| 1034 | # ifdef USE_ITHREADS |
| 1035 | sv_catpv(PL_Sv," USE_ITHREADS"); |
| 1036 | # endif |
| 1037 | # ifdef USE_64_BIT_INT |
| 1038 | sv_catpv(PL_Sv," USE_64_BIT_INT"); |
| 1039 | # endif |
| 1040 | # ifdef USE_64_BIT_ALL |
| 1041 | sv_catpv(PL_Sv," USE_64_BIT_ALL"); |
| 1042 | # endif |
| 1043 | # ifdef USE_LONG_DOUBLE |
| 1044 | sv_catpv(PL_Sv," USE_LONG_DOUBLE"); |
| 1045 | # endif |
| 1046 | # ifdef USE_LARGE_FILES |
| 1047 | sv_catpv(PL_Sv," USE_LARGE_FILES"); |
| 1048 | # endif |
| 1049 | # ifdef USE_SOCKS |
| 1050 | sv_catpv(PL_Sv," USE_SOCKS"); |
| 1051 | # endif |
| 1052 | # ifdef PERL_OBJECT |
| 1053 | sv_catpv(PL_Sv," PERL_OBJECT"); |
| 1054 | # endif |
| 1055 | # ifdef PERL_IMPLICIT_CONTEXT |
| 1056 | sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT"); |
| 1057 | # endif |
| 1058 | # ifdef PERL_IMPLICIT_SYS |
| 1059 | sv_catpv(PL_Sv," PERL_IMPLICIT_SYS"); |
| 1060 | # endif |
| 1061 | sv_catpv(PL_Sv,"\\n\","); |
| 1062 | |
| 1063 | #if defined(LOCAL_PATCH_COUNT) |
| 1064 | if (LOCAL_PATCH_COUNT > 0) { |
| 1065 | int i; |
| 1066 | sv_catpv(PL_Sv,"\" Locally applied patches:\\n\","); |
| 1067 | for (i = 1; i <= LOCAL_PATCH_COUNT; i++) { |
| 1068 | if (PL_localpatches[i]) |
| 1069 | Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]); |
| 1070 | } |
| 1071 | } |
| 1072 | #endif |
| 1073 | Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME); |
| 1074 | #ifdef __DATE__ |
| 1075 | # ifdef __TIME__ |
| 1076 | Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__); |
| 1077 | # else |
| 1078 | Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__); |
| 1079 | # endif |
| 1080 | #endif |
| 1081 | sv_catpv(PL_Sv, "; \ |
| 1082 | $\"=\"\\n \"; \ |
| 1083 | @env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; \ |
| 1084 | print \" \\%ENV:\\n @env\\n\" if @env; \ |
| 1085 | print \" \\@INC:\\n @INC\\n\";"); |
| 1086 | } |
| 1087 | else { |
| 1088 | PL_Sv = newSVpv("config_vars(qw(",0); |
| 1089 | sv_catpv(PL_Sv, ++s); |
| 1090 | sv_catpv(PL_Sv, "))"); |
| 1091 | s += strlen(s); |
| 1092 | } |
| 1093 | av_push(PL_preambleav, PL_Sv); |
| 1094 | scriptname = BIT_BUCKET; /* don't look for script or read stdin */ |
| 1095 | goto reswitch; |
| 1096 | case 'x': |
| 1097 | PL_doextract = TRUE; |
| 1098 | s++; |
| 1099 | if (*s) |
| 1100 | cddir = s; |
| 1101 | break; |
| 1102 | case 0: |
| 1103 | break; |
| 1104 | case '-': |
| 1105 | if (!*++s || isSPACE(*s)) { |
| 1106 | argc--,argv++; |
| 1107 | goto switch_end; |
| 1108 | } |
| 1109 | /* catch use of gnu style long options */ |
| 1110 | if (strEQ(s, "version")) { |
| 1111 | s = "v"; |
| 1112 | goto reswitch; |
| 1113 | } |
| 1114 | if (strEQ(s, "help")) { |
| 1115 | s = "h"; |
| 1116 | goto reswitch; |
| 1117 | } |
| 1118 | s--; |
| 1119 | /* FALL THROUGH */ |
| 1120 | default: |
| 1121 | Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s); |
| 1122 | } |
| 1123 | } |
| 1124 | switch_end: |
| 1125 | |
| 1126 | if ( |
| 1127 | #ifndef SECURE_INTERNAL_GETENV |
| 1128 | !PL_tainting && |
| 1129 | #endif |
| 1130 | (s = PerlEnv_getenv("PERL5OPT"))) |
| 1131 | { |
| 1132 | while (isSPACE(*s)) |
| 1133 | s++; |
| 1134 | if (*s == '-' && *(s+1) == 'T') |
| 1135 | PL_tainting = TRUE; |
| 1136 | else { |
| 1137 | while (s && *s) { |
| 1138 | while (isSPACE(*s)) |
| 1139 | s++; |
| 1140 | if (*s == '-') { |
| 1141 | s++; |
| 1142 | if (isSPACE(*s)) |
| 1143 | continue; |
| 1144 | } |
| 1145 | if (!*s) |
| 1146 | break; |
| 1147 | if (!strchr("DIMUdmw", *s)) |
| 1148 | Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s); |
| 1149 | s = moreswitches(s); |
| 1150 | } |
| 1151 | } |
| 1152 | } |
| 1153 | |
| 1154 | if (!scriptname) |
| 1155 | scriptname = argv[0]; |
| 1156 | if (PL_e_script) { |
| 1157 | argc++,argv--; |
| 1158 | scriptname = BIT_BUCKET; /* don't look for script or read stdin */ |
| 1159 | } |
| 1160 | else if (scriptname == Nullch) { |
| 1161 | #ifdef MSDOS |
| 1162 | if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) ) |
| 1163 | moreswitches("h"); |
| 1164 | #endif |
| 1165 | scriptname = "-"; |
| 1166 | } |
| 1167 | |
| 1168 | init_perllib(); |
| 1169 | |
| 1170 | open_script(scriptname,dosearch,sv,&fdscript); |
| 1171 | |
| 1172 | validate_suid(validarg, scriptname,fdscript); |
| 1173 | |
| 1174 | #if defined(SIGCHLD) || defined(SIGCLD) |
| 1175 | { |
| 1176 | #ifndef SIGCHLD |
| 1177 | # define SIGCHLD SIGCLD |
| 1178 | #endif |
| 1179 | Sighandler_t sigstate = rsignal_state(SIGCHLD); |
| 1180 | if (sigstate == SIG_IGN) { |
| 1181 | if (ckWARN(WARN_SIGNAL)) |
| 1182 | Perl_warner(aTHX_ WARN_SIGNAL, |
| 1183 | "Can't ignore signal CHLD, forcing to default"); |
| 1184 | (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL); |
| 1185 | } |
| 1186 | } |
| 1187 | #endif |
| 1188 | |
| 1189 | if (PL_doextract) { |
| 1190 | find_beginning(); |
| 1191 | if (cddir && PerlDir_chdir(cddir) < 0) |
| 1192 | Perl_croak(aTHX_ "Can't chdir to %s",cddir); |
| 1193 | |
| 1194 | } |
| 1195 | |
| 1196 | PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0); |
| 1197 | sv_upgrade((SV *)PL_compcv, SVt_PVCV); |
| 1198 | CvUNIQUE_on(PL_compcv); |
| 1199 | |
| 1200 | PL_comppad = newAV(); |
| 1201 | av_push(PL_comppad, Nullsv); |
| 1202 | PL_curpad = AvARRAY(PL_comppad); |
| 1203 | PL_comppad_name = newAV(); |
| 1204 | PL_comppad_name_fill = 0; |
| 1205 | PL_min_intro_pending = 0; |
| 1206 | PL_padix = 0; |
| 1207 | #ifdef USE_THREADS |
| 1208 | av_store(PL_comppad_name, 0, newSVpvn("@_", 2)); |
| 1209 | PL_curpad[0] = (SV*)newAV(); |
| 1210 | SvPADMY_on(PL_curpad[0]); /* XXX Needed? */ |
| 1211 | CvOWNER(PL_compcv) = 0; |
| 1212 | New(666, CvMUTEXP(PL_compcv), 1, perl_mutex); |
| 1213 | MUTEX_INIT(CvMUTEXP(PL_compcv)); |
| 1214 | #endif /* USE_THREADS */ |
| 1215 | |
| 1216 | comppadlist = newAV(); |
| 1217 | AvREAL_off(comppadlist); |
| 1218 | av_store(comppadlist, 0, (SV*)PL_comppad_name); |
| 1219 | av_store(comppadlist, 1, (SV*)PL_comppad); |
| 1220 | CvPADLIST(PL_compcv) = comppadlist; |
| 1221 | |
| 1222 | boot_core_UNIVERSAL(); |
| 1223 | #ifndef PERL_MICRO |
| 1224 | boot_core_xsutils(); |
| 1225 | #endif |
| 1226 | |
| 1227 | if (xsinit) |
| 1228 | (*xsinit)(aTHXo); /* in case linked C routines want magical variables */ |
| 1229 | #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) |
| 1230 | init_os_extras(); |
| 1231 | #endif |
| 1232 | |
| 1233 | #ifdef USE_SOCKS |
| 1234 | SOCKSinit(argv[0]); |
| 1235 | #endif |
| 1236 | |
| 1237 | init_predump_symbols(); |
| 1238 | /* init_postdump_symbols not currently designed to be called */ |
| 1239 | /* more than once (ENV isn't cleared first, for example) */ |
| 1240 | /* But running with -u leaves %ENV & @ARGV undefined! XXX */ |
| 1241 | if (!PL_do_undump) |
| 1242 | init_postdump_symbols(argc,argv,env); |
| 1243 | |
| 1244 | init_lexer(); |
| 1245 | |
| 1246 | /* now parse the script */ |
| 1247 | |
| 1248 | SETERRNO(0,SS$_NORMAL); |
| 1249 | PL_error_count = 0; |
| 1250 | if (yyparse() || PL_error_count) { |
| 1251 | if (PL_minus_c) |
| 1252 | Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename); |
| 1253 | else { |
| 1254 | Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n", |
| 1255 | PL_origfilename); |
| 1256 | } |
| 1257 | } |
| 1258 | CopLINE_set(PL_curcop, 0); |
| 1259 | PL_curstash = PL_defstash; |
| 1260 | PL_preprocess = FALSE; |
| 1261 | if (PL_e_script) { |
| 1262 | SvREFCNT_dec(PL_e_script); |
| 1263 | PL_e_script = Nullsv; |
| 1264 | } |
| 1265 | |
| 1266 | /* now that script is parsed, we can modify record separator */ |
| 1267 | SvREFCNT_dec(PL_rs); |
| 1268 | PL_rs = SvREFCNT_inc(PL_nrs); |
| 1269 | sv_setsv(get_sv("/", TRUE), PL_rs); |
| 1270 | if (PL_do_undump) |
| 1271 | my_unexec(); |
| 1272 | |
| 1273 | if (isWARN_ONCE) { |
| 1274 | SAVECOPFILE(PL_curcop); |
| 1275 | SAVECOPLINE(PL_curcop); |
| 1276 | gv_check(PL_defstash); |
| 1277 | } |
| 1278 | |
| 1279 | LEAVE; |
| 1280 | FREETMPS; |
| 1281 | |
| 1282 | #ifdef MYMALLOC |
| 1283 | if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2) |
| 1284 | dump_mstats("after compilation:"); |
| 1285 | #endif |
| 1286 | |
| 1287 | ENTER; |
| 1288 | PL_restartop = 0; |
| 1289 | return NULL; |
| 1290 | } |
| 1291 | |
| 1292 | /* |
| 1293 | =for apidoc perl_run |
| 1294 | |
| 1295 | Tells a Perl interpreter to run. See L<perlembed>. |
| 1296 | |
| 1297 | =cut |
| 1298 | */ |
| 1299 | |
| 1300 | int |
| 1301 | perl_run(pTHXx) |
| 1302 | { |
| 1303 | dTHR; |
| 1304 | I32 oldscope; |
| 1305 | int ret = 0; |
| 1306 | dJMPENV; |
| 1307 | #ifdef USE_THREADS |
| 1308 | dTHX; |
| 1309 | #endif |
| 1310 | |
| 1311 | oldscope = PL_scopestack_ix; |
| 1312 | |
| 1313 | #ifdef PERL_FLEXIBLE_EXCEPTIONS |
| 1314 | redo_body: |
| 1315 | CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope); |
| 1316 | #else |
| 1317 | JMPENV_PUSH(ret); |
| 1318 | #endif |
| 1319 | switch (ret) { |
| 1320 | case 1: |
| 1321 | cxstack_ix = -1; /* start context stack again */ |
| 1322 | goto redo_body; |
| 1323 | case 0: /* normal completion */ |
| 1324 | #ifndef PERL_FLEXIBLE_EXCEPTIONS |
| 1325 | redo_body: |
| 1326 | run_body(oldscope); |
| 1327 | #endif |
| 1328 | /* FALL THROUGH */ |
| 1329 | case 2: /* my_exit() */ |
| 1330 | while (PL_scopestack_ix > oldscope) |
| 1331 | LEAVE; |
| 1332 | FREETMPS; |
| 1333 | PL_curstash = PL_defstash; |
| 1334 | if (PL_endav && !PL_minus_c) |
| 1335 | call_list(oldscope, PL_endav); |
| 1336 | #ifdef MYMALLOC |
| 1337 | if (PerlEnv_getenv("PERL_DEBUG_MSTATS")) |
| 1338 | dump_mstats("after execution: "); |
| 1339 | #endif |
| 1340 | ret = STATUS_NATIVE_EXPORT; |
| 1341 | break; |
| 1342 | case 3: |
| 1343 | if (PL_restartop) { |
| 1344 | POPSTACK_TO(PL_mainstack); |
| 1345 | goto redo_body; |
| 1346 | } |
| 1347 | PerlIO_printf(Perl_error_log, "panic: restartop\n"); |
| 1348 | FREETMPS; |
| 1349 | ret = 1; |
| 1350 | break; |
| 1351 | } |
| 1352 | |
| 1353 | JMPENV_POP; |
| 1354 | return ret; |
| 1355 | } |
| 1356 | |
| 1357 | #ifdef PERL_FLEXIBLE_EXCEPTIONS |
| 1358 | STATIC void * |
| 1359 | S_vrun_body(pTHX_ va_list args) |
| 1360 | { |
| 1361 | I32 oldscope = va_arg(args, I32); |
| 1362 | |
| 1363 | return run_body(oldscope); |
| 1364 | } |
| 1365 | #endif |
| 1366 | |
| 1367 | |
| 1368 | STATIC void * |
| 1369 | S_run_body(pTHX_ I32 oldscope) |
| 1370 | { |
| 1371 | dTHR; |
| 1372 | |
| 1373 | DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n", |
| 1374 | PL_sawampersand ? "Enabling" : "Omitting")); |
| 1375 | |
| 1376 | if (!PL_restartop) { |
| 1377 | DEBUG_x(dump_all()); |
| 1378 | DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n")); |
| 1379 | DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n", |
| 1380 | PTR2UV(thr))); |
| 1381 | |
| 1382 | if (PL_minus_c) { |
| 1383 | PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename); |
| 1384 | my_exit(0); |
| 1385 | } |
| 1386 | if (PERLDB_SINGLE && PL_DBsingle) |
| 1387 | sv_setiv(PL_DBsingle, 1); |
| 1388 | if (PL_initav) |
| 1389 | call_list(oldscope, PL_initav); |
| 1390 | } |
| 1391 | |
| 1392 | /* do it */ |
| 1393 | |
| 1394 | if (PL_restartop) { |
| 1395 | PL_op = PL_restartop; |
| 1396 | PL_restartop = 0; |
| 1397 | CALLRUNOPS(aTHX); |
| 1398 | } |
| 1399 | else if (PL_main_start) { |
| 1400 | CvDEPTH(PL_main_cv) = 1; |
| 1401 | PL_op = PL_main_start; |
| 1402 | CALLRUNOPS(aTHX); |
| 1403 | } |
| 1404 | |
| 1405 | my_exit(0); |
| 1406 | /* NOTREACHED */ |
| 1407 | return NULL; |
| 1408 | } |
| 1409 | |
| 1410 | /* |
| 1411 | =for apidoc p||get_sv |
| 1412 | |
| 1413 | Returns the SV of the specified Perl scalar. If C<create> is set and the |
| 1414 | Perl variable does not exist then it will be created. If C<create> is not |
| 1415 | set and the variable does not exist then NULL is returned. |
| 1416 | |
| 1417 | =cut |
| 1418 | */ |
| 1419 | |
| 1420 | SV* |
| 1421 | Perl_get_sv(pTHX_ const char *name, I32 create) |
| 1422 | { |
| 1423 | GV *gv; |
| 1424 | #ifdef USE_THREADS |
| 1425 | if (name[1] == '\0' && !isALPHA(name[0])) { |
| 1426 | PADOFFSET tmp = find_threadsv(name); |
| 1427 | if (tmp != NOT_IN_PAD) { |
| 1428 | dTHR; |
| 1429 | return THREADSV(tmp); |
| 1430 | } |
| 1431 | } |
| 1432 | #endif /* USE_THREADS */ |
| 1433 | gv = gv_fetchpv(name, create, SVt_PV); |
| 1434 | if (gv) |
| 1435 | return GvSV(gv); |
| 1436 | return Nullsv; |
| 1437 | } |
| 1438 | |
| 1439 | /* |
| 1440 | =for apidoc p||get_av |
| 1441 | |
| 1442 | Returns the AV of the specified Perl array. If C<create> is set and the |
| 1443 | Perl variable does not exist then it will be created. If C<create> is not |
| 1444 | set and the variable does not exist then NULL is returned. |
| 1445 | |
| 1446 | =cut |
| 1447 | */ |
| 1448 | |
| 1449 | AV* |
| 1450 | Perl_get_av(pTHX_ const char *name, I32 create) |
| 1451 | { |
| 1452 | GV* gv = gv_fetchpv(name, create, SVt_PVAV); |
| 1453 | if (create) |
| 1454 | return GvAVn(gv); |
| 1455 | if (gv) |
| 1456 | return GvAV(gv); |
| 1457 | return Nullav; |
| 1458 | } |
| 1459 | |
| 1460 | /* |
| 1461 | =for apidoc p||get_hv |
| 1462 | |
| 1463 | Returns the HV of the specified Perl hash. If C<create> is set and the |
| 1464 | Perl variable does not exist then it will be created. If C<create> is not |
| 1465 | set and the variable does not exist then NULL is returned. |
| 1466 | |
| 1467 | =cut |
| 1468 | */ |
| 1469 | |
| 1470 | HV* |
| 1471 | Perl_get_hv(pTHX_ const char *name, I32 create) |
| 1472 | { |
| 1473 | GV* gv = gv_fetchpv(name, create, SVt_PVHV); |
| 1474 | if (create) |
| 1475 | return GvHVn(gv); |
| 1476 | if (gv) |
| 1477 | return GvHV(gv); |
| 1478 | return Nullhv; |
| 1479 | } |
| 1480 | |
| 1481 | /* |
| 1482 | =for apidoc p||get_cv |
| 1483 | |
| 1484 | Returns the CV of the specified Perl subroutine. If C<create> is set and |
| 1485 | the Perl subroutine does not exist then it will be declared (which has the |
| 1486 | same effect as saying C<sub name;>). If C<create> is not set and the |
| 1487 | subroutine does not exist then NULL is returned. |
| 1488 | |
| 1489 | =cut |
| 1490 | */ |
| 1491 | |
| 1492 | CV* |
| 1493 | Perl_get_cv(pTHX_ const char *name, I32 create) |
| 1494 | { |
| 1495 | GV* gv = gv_fetchpv(name, create, SVt_PVCV); |
| 1496 | /* XXX unsafe for threads if eval_owner isn't held */ |
| 1497 | /* XXX this is probably not what they think they're getting. |
| 1498 | * It has the same effect as "sub name;", i.e. just a forward |
| 1499 | * declaration! */ |
| 1500 | if (create && !GvCVu(gv)) |
| 1501 | return newSUB(start_subparse(FALSE, 0), |
| 1502 | newSVOP(OP_CONST, 0, newSVpv(name,0)), |
| 1503 | Nullop, |
| 1504 | Nullop); |
| 1505 | if (gv) |
| 1506 | return GvCVu(gv); |
| 1507 | return Nullcv; |
| 1508 | } |
| 1509 | |
| 1510 | /* Be sure to refetch the stack pointer after calling these routines. */ |
| 1511 | |
| 1512 | /* |
| 1513 | =for apidoc p||call_argv |
| 1514 | |
| 1515 | Performs a callback to the specified Perl sub. See L<perlcall>. |
| 1516 | |
| 1517 | =cut |
| 1518 | */ |
| 1519 | |
| 1520 | I32 |
| 1521 | Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv) |
| 1522 | |
| 1523 | /* See G_* flags in cop.h */ |
| 1524 | /* null terminated arg list */ |
| 1525 | { |
| 1526 | dSP; |
| 1527 | |
| 1528 | PUSHMARK(SP); |
| 1529 | if (argv) { |
| 1530 | while (*argv) { |
| 1531 | XPUSHs(sv_2mortal(newSVpv(*argv,0))); |
| 1532 | argv++; |
| 1533 | } |
| 1534 | PUTBACK; |
| 1535 | } |
| 1536 | return call_pv(sub_name, flags); |
| 1537 | } |
| 1538 | |
| 1539 | /* |
| 1540 | =for apidoc p||call_pv |
| 1541 | |
| 1542 | Performs a callback to the specified Perl sub. See L<perlcall>. |
| 1543 | |
| 1544 | =cut |
| 1545 | */ |
| 1546 | |
| 1547 | I32 |
| 1548 | Perl_call_pv(pTHX_ const char *sub_name, I32 flags) |
| 1549 | /* name of the subroutine */ |
| 1550 | /* See G_* flags in cop.h */ |
| 1551 | { |
| 1552 | return call_sv((SV*)get_cv(sub_name, TRUE), flags); |
| 1553 | } |
| 1554 | |
| 1555 | /* |
| 1556 | =for apidoc p||call_method |
| 1557 | |
| 1558 | Performs a callback to the specified Perl method. The blessed object must |
| 1559 | be on the stack. See L<perlcall>. |
| 1560 | |
| 1561 | =cut |
| 1562 | */ |
| 1563 | |
| 1564 | I32 |
| 1565 | Perl_call_method(pTHX_ const char *methname, I32 flags) |
| 1566 | /* name of the subroutine */ |
| 1567 | /* See G_* flags in cop.h */ |
| 1568 | { |
| 1569 | dSP; |
| 1570 | OP myop; |
| 1571 | if (!PL_op) { |
| 1572 | Zero(&myop, 1, OP); |
| 1573 | PL_op = &myop; |
| 1574 | } |
| 1575 | XPUSHs(sv_2mortal(newSVpv(methname,0))); |
| 1576 | PUTBACK; |
| 1577 | pp_method(); |
| 1578 | if (PL_op == &myop) |
| 1579 | PL_op = Nullop; |
| 1580 | return call_sv(*PL_stack_sp--, flags); |
| 1581 | } |
| 1582 | |
| 1583 | /* May be called with any of a CV, a GV, or an SV containing the name. */ |
| 1584 | /* |
| 1585 | =for apidoc p||call_sv |
| 1586 | |
| 1587 | Performs a callback to the Perl sub whose name is in the SV. See |
| 1588 | L<perlcall>. |
| 1589 | |
| 1590 | =cut |
| 1591 | */ |
| 1592 | |
| 1593 | I32 |
| 1594 | Perl_call_sv(pTHX_ SV *sv, I32 flags) |
| 1595 | |
| 1596 | /* See G_* flags in cop.h */ |
| 1597 | { |
| 1598 | dSP; |
| 1599 | LOGOP myop; /* fake syntax tree node */ |
| 1600 | I32 oldmark; |
| 1601 | I32 retval; |
| 1602 | I32 oldscope; |
| 1603 | bool oldcatch = CATCH_GET; |
| 1604 | int ret; |
| 1605 | OP* oldop = PL_op; |
| 1606 | dJMPENV; |
| 1607 | |
| 1608 | if (flags & G_DISCARD) { |
| 1609 | ENTER; |
| 1610 | SAVETMPS; |
| 1611 | } |
| 1612 | |
| 1613 | Zero(&myop, 1, LOGOP); |
| 1614 | myop.op_next = Nullop; |
| 1615 | if (!(flags & G_NOARGS)) |
| 1616 | myop.op_flags |= OPf_STACKED; |
| 1617 | myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID : |
| 1618 | (flags & G_ARRAY) ? OPf_WANT_LIST : |
| 1619 | OPf_WANT_SCALAR); |
| 1620 | SAVEOP(); |
| 1621 | PL_op = (OP*)&myop; |
| 1622 | |
| 1623 | EXTEND(PL_stack_sp, 1); |
| 1624 | *++PL_stack_sp = sv; |
| 1625 | oldmark = TOPMARK; |
| 1626 | oldscope = PL_scopestack_ix; |
| 1627 | |
| 1628 | if (PERLDB_SUB && PL_curstash != PL_debstash |
| 1629 | /* Handle first BEGIN of -d. */ |
| 1630 | && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub))) |
| 1631 | /* Try harder, since this may have been a sighandler, thus |
| 1632 | * curstash may be meaningless. */ |
| 1633 | && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash) |
| 1634 | && !(flags & G_NODEBUG)) |
| 1635 | PL_op->op_private |= OPpENTERSUB_DB; |
| 1636 | |
| 1637 | if (!(flags & G_EVAL)) { |
| 1638 | CATCH_SET(TRUE); |
| 1639 | call_body((OP*)&myop, FALSE); |
| 1640 | retval = PL_stack_sp - (PL_stack_base + oldmark); |
| 1641 | CATCH_SET(oldcatch); |
| 1642 | } |
| 1643 | else { |
| 1644 | cLOGOP->op_other = PL_op; |
| 1645 | PL_markstack_ptr--; |
| 1646 | /* we're trying to emulate pp_entertry() here */ |
| 1647 | { |
| 1648 | register PERL_CONTEXT *cx; |
| 1649 | I32 gimme = GIMME_V; |
| 1650 | |
| 1651 | ENTER; |
| 1652 | SAVETMPS; |
| 1653 | |
| 1654 | push_return(PL_op->op_next); |
| 1655 | PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp); |
| 1656 | PUSHEVAL(cx, 0, 0); |
| 1657 | PL_eval_root = PL_op; /* Only needed so that goto works right. */ |
| 1658 | |
| 1659 | PL_in_eval = EVAL_INEVAL; |
| 1660 | if (flags & G_KEEPERR) |
| 1661 | PL_in_eval |= EVAL_KEEPERR; |
| 1662 | else |
| 1663 | sv_setpv(ERRSV,""); |
| 1664 | } |
| 1665 | PL_markstack_ptr++; |
| 1666 | |
| 1667 | #ifdef PERL_FLEXIBLE_EXCEPTIONS |
| 1668 | redo_body: |
| 1669 | CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body), |
| 1670 | (OP*)&myop, FALSE); |
| 1671 | #else |
| 1672 | JMPENV_PUSH(ret); |
| 1673 | #endif |
| 1674 | switch (ret) { |
| 1675 | case 0: |
| 1676 | #ifndef PERL_FLEXIBLE_EXCEPTIONS |
| 1677 | redo_body: |
| 1678 | call_body((OP*)&myop, FALSE); |
| 1679 | #endif |
| 1680 | retval = PL_stack_sp - (PL_stack_base + oldmark); |
| 1681 | if (!(flags & G_KEEPERR)) |
| 1682 | sv_setpv(ERRSV,""); |
| 1683 | break; |
| 1684 | case 1: |
| 1685 | STATUS_ALL_FAILURE; |
| 1686 | /* FALL THROUGH */ |
| 1687 | case 2: |
| 1688 | /* my_exit() was called */ |
| 1689 | PL_curstash = PL_defstash; |
| 1690 | FREETMPS; |
| 1691 | JMPENV_POP; |
| 1692 | if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) |
| 1693 | Perl_croak(aTHX_ "Callback called exit"); |
| 1694 | my_exit_jump(); |
| 1695 | /* NOTREACHED */ |
| 1696 | case 3: |
| 1697 | if (PL_restartop) { |
| 1698 | PL_op = PL_restartop; |
| 1699 | PL_restartop = 0; |
| 1700 | goto redo_body; |
| 1701 | } |
| 1702 | PL_stack_sp = PL_stack_base + oldmark; |
| 1703 | if (flags & G_ARRAY) |
| 1704 | retval = 0; |
| 1705 | else { |
| 1706 | retval = 1; |
| 1707 | *++PL_stack_sp = &PL_sv_undef; |
| 1708 | } |
| 1709 | break; |
| 1710 | } |
| 1711 | |
| 1712 | if (PL_scopestack_ix > oldscope) { |
| 1713 | SV **newsp; |
| 1714 | PMOP *newpm; |
| 1715 | I32 gimme; |
| 1716 | register PERL_CONTEXT *cx; |
| 1717 | I32 optype; |
| 1718 | |
| 1719 | POPBLOCK(cx,newpm); |
| 1720 | POPEVAL(cx); |
| 1721 | pop_return(); |
| 1722 | PL_curpm = newpm; |
| 1723 | LEAVE; |
| 1724 | } |
| 1725 | JMPENV_POP; |
| 1726 | } |
| 1727 | |
| 1728 | if (flags & G_DISCARD) { |
| 1729 | PL_stack_sp = PL_stack_base + oldmark; |
| 1730 | retval = 0; |
| 1731 | FREETMPS; |
| 1732 | LEAVE; |
| 1733 | } |
| 1734 | PL_op = oldop; |
| 1735 | return retval; |
| 1736 | } |
| 1737 | |
| 1738 | #ifdef PERL_FLEXIBLE_EXCEPTIONS |
| 1739 | STATIC void * |
| 1740 | S_vcall_body(pTHX_ va_list args) |
| 1741 | { |
| 1742 | OP *myop = va_arg(args, OP*); |
| 1743 | int is_eval = va_arg(args, int); |
| 1744 | |
| 1745 | call_body(myop, is_eval); |
| 1746 | return NULL; |
| 1747 | } |
| 1748 | #endif |
| 1749 | |
| 1750 | STATIC void |
| 1751 | S_call_body(pTHX_ OP *myop, int is_eval) |
| 1752 | { |
| 1753 | dTHR; |
| 1754 | |
| 1755 | if (PL_op == myop) { |
| 1756 | if (is_eval) |
| 1757 | PL_op = Perl_pp_entereval(aTHX); |
| 1758 | else |
| 1759 | PL_op = Perl_pp_entersub(aTHX); |
| 1760 | } |
| 1761 | if (PL_op) |
| 1762 | CALLRUNOPS(aTHX); |
| 1763 | } |
| 1764 | |
| 1765 | /* Eval a string. The G_EVAL flag is always assumed. */ |
| 1766 | |
| 1767 | /* |
| 1768 | =for apidoc p||eval_sv |
| 1769 | |
| 1770 | Tells Perl to C<eval> the string in the SV. |
| 1771 | |
| 1772 | =cut |
| 1773 | */ |
| 1774 | |
| 1775 | I32 |
| 1776 | Perl_eval_sv(pTHX_ SV *sv, I32 flags) |
| 1777 | |
| 1778 | /* See G_* flags in cop.h */ |
| 1779 | { |
| 1780 | dSP; |
| 1781 | UNOP myop; /* fake syntax tree node */ |
| 1782 | I32 oldmark = SP - PL_stack_base; |
| 1783 | I32 retval; |
| 1784 | I32 oldscope; |
| 1785 | int ret; |
| 1786 | OP* oldop = PL_op; |
| 1787 | dJMPENV; |
| 1788 | |
| 1789 | if (flags & G_DISCARD) { |
| 1790 | ENTER; |
| 1791 | SAVETMPS; |
| 1792 | } |
| 1793 | |
| 1794 | SAVEOP(); |
| 1795 | PL_op = (OP*)&myop; |
| 1796 | Zero(PL_op, 1, UNOP); |
| 1797 | EXTEND(PL_stack_sp, 1); |
| 1798 | *++PL_stack_sp = sv; |
| 1799 | oldscope = PL_scopestack_ix; |
| 1800 | |
| 1801 | if (!(flags & G_NOARGS)) |
| 1802 | myop.op_flags = OPf_STACKED; |
| 1803 | myop.op_next = Nullop; |
| 1804 | myop.op_type = OP_ENTEREVAL; |
| 1805 | myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID : |
| 1806 | (flags & G_ARRAY) ? OPf_WANT_LIST : |
| 1807 | OPf_WANT_SCALAR); |
| 1808 | if (flags & G_KEEPERR) |
| 1809 | myop.op_flags |= OPf_SPECIAL; |
| 1810 | |
| 1811 | #ifdef PERL_FLEXIBLE_EXCEPTIONS |
| 1812 | redo_body: |
| 1813 | CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body), |
| 1814 | (OP*)&myop, TRUE); |
| 1815 | #else |
| 1816 | JMPENV_PUSH(ret); |
| 1817 | #endif |
| 1818 | switch (ret) { |
| 1819 | case 0: |
| 1820 | #ifndef PERL_FLEXIBLE_EXCEPTIONS |
| 1821 | redo_body: |
| 1822 | call_body((OP*)&myop,TRUE); |
| 1823 | #endif |
| 1824 | retval = PL_stack_sp - (PL_stack_base + oldmark); |
| 1825 | if (!(flags & G_KEEPERR)) |
| 1826 | sv_setpv(ERRSV,""); |
| 1827 | break; |
| 1828 | case 1: |
| 1829 | STATUS_ALL_FAILURE; |
| 1830 | /* FALL THROUGH */ |
| 1831 | case 2: |
| 1832 | /* my_exit() was called */ |
| 1833 | PL_curstash = PL_defstash; |
| 1834 | FREETMPS; |
| 1835 | JMPENV_POP; |
| 1836 | if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) |
| 1837 | Perl_croak(aTHX_ "Callback called exit"); |
| 1838 | my_exit_jump(); |
| 1839 | /* NOTREACHED */ |
| 1840 | case 3: |
| 1841 | if (PL_restartop) { |
| 1842 | PL_op = PL_restartop; |
| 1843 | PL_restartop = 0; |
| 1844 | goto redo_body; |
| 1845 | } |
| 1846 | PL_stack_sp = PL_stack_base + oldmark; |
| 1847 | if (flags & G_ARRAY) |
| 1848 | retval = 0; |
| 1849 | else { |
| 1850 | retval = 1; |
| 1851 | *++PL_stack_sp = &PL_sv_undef; |
| 1852 | } |
| 1853 | break; |
| 1854 | } |
| 1855 | |
| 1856 | JMPENV_POP; |
| 1857 | if (flags & G_DISCARD) { |
| 1858 | PL_stack_sp = PL_stack_base + oldmark; |
| 1859 | retval = 0; |
| 1860 | FREETMPS; |
| 1861 | LEAVE; |
| 1862 | } |
| 1863 | PL_op = oldop; |
| 1864 | return retval; |
| 1865 | } |
| 1866 | |
| 1867 | /* |
| 1868 | =for apidoc p||eval_pv |
| 1869 | |
| 1870 | Tells Perl to C<eval> the given string and return an SV* result. |
| 1871 | |
| 1872 | =cut |
| 1873 | */ |
| 1874 | |
| 1875 | SV* |
| 1876 | Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error) |
| 1877 | { |
| 1878 | dSP; |
| 1879 | SV* sv = newSVpv(p, 0); |
| 1880 | |
| 1881 | PUSHMARK(SP); |
| 1882 | eval_sv(sv, G_SCALAR); |
| 1883 | SvREFCNT_dec(sv); |
| 1884 | |
| 1885 | SPAGAIN; |
| 1886 | sv = POPs; |
| 1887 | PUTBACK; |
| 1888 | |
| 1889 | if (croak_on_error && SvTRUE(ERRSV)) { |
| 1890 | STRLEN n_a; |
| 1891 | Perl_croak(aTHX_ SvPVx(ERRSV, n_a)); |
| 1892 | } |
| 1893 | |
| 1894 | return sv; |
| 1895 | } |
| 1896 | |
| 1897 | /* Require a module. */ |
| 1898 | |
| 1899 | /* |
| 1900 | =for apidoc p||require_pv |
| 1901 | |
| 1902 | Tells Perl to C<require> a module. |
| 1903 | |
| 1904 | =cut |
| 1905 | */ |
| 1906 | |
| 1907 | void |
| 1908 | Perl_require_pv(pTHX_ const char *pv) |
| 1909 | { |
| 1910 | SV* sv; |
| 1911 | dSP; |
| 1912 | PUSHSTACKi(PERLSI_REQUIRE); |
| 1913 | PUTBACK; |
| 1914 | sv = sv_newmortal(); |
| 1915 | sv_setpv(sv, "require '"); |
| 1916 | sv_catpv(sv, pv); |
| 1917 | sv_catpv(sv, "'"); |
| 1918 | eval_sv(sv, G_DISCARD); |
| 1919 | SPAGAIN; |
| 1920 | POPSTACK; |
| 1921 | } |
| 1922 | |
| 1923 | void |
| 1924 | Perl_magicname(pTHX_ char *sym, char *name, I32 namlen) |
| 1925 | { |
| 1926 | register GV *gv; |
| 1927 | |
| 1928 | if ((gv = gv_fetchpv(sym,TRUE, SVt_PV))) |
| 1929 | sv_magic(GvSV(gv), (SV*)gv, 0, name, namlen); |
| 1930 | } |
| 1931 | |
| 1932 | STATIC void |
| 1933 | S_usage(pTHX_ char *name) /* XXX move this out into a module ? */ |
| 1934 | { |
| 1935 | /* This message really ought to be max 23 lines. |
| 1936 | * Removed -h because the user already knows that opton. Others? */ |
| 1937 | |
| 1938 | static char *usage_msg[] = { |
| 1939 | "-0[octal] specify record separator (\\0, if no argument)", |
| 1940 | "-a autosplit mode with -n or -p (splits $_ into @F)", |
| 1941 | "-C enable native wide character system interfaces", |
| 1942 | "-c check syntax only (runs BEGIN and END blocks)", |
| 1943 | "-d[:debugger] run program under debugger", |
| 1944 | "-D[number/list] set debugging flags (argument is a bit mask or alphabets)", |
| 1945 | "-e 'command' one line of program (several -e's allowed, omit programfile)", |
| 1946 | "-F/pattern/ split() pattern for -a switch (//'s are optional)", |
| 1947 | "-i[extension] edit <> files in place (makes backup if extension supplied)", |
| 1948 | "-Idirectory specify @INC/#include directory (several -I's allowed)", |
| 1949 | "-l[octal] enable line ending processing, specifies line terminator", |
| 1950 | "-[mM][-]module execute `use/no module...' before executing program", |
| 1951 | "-n assume 'while (<>) { ... }' loop around program", |
| 1952 | "-p assume loop like -n but print line also, like sed", |
| 1953 | "-P run program through C preprocessor before compilation", |
| 1954 | "-s enable rudimentary parsing for switches after programfile", |
| 1955 | "-S look for programfile using PATH environment variable", |
| 1956 | "-T enable tainting checks", |
| 1957 | "-u dump core after parsing program", |
| 1958 | "-U allow unsafe operations", |
| 1959 | "-v print version, subversion (includes VERY IMPORTANT perl info)", |
| 1960 | "-V[:variable] print configuration summary (or a single Config.pm variable)", |
| 1961 | "-w enable many useful warnings (RECOMMENDED)", |
| 1962 | "-W enable all warnings", |
| 1963 | "-X disable all warnings", |
| 1964 | "-x[directory] strip off text before #!perl line and perhaps cd to directory", |
| 1965 | "\n", |
| 1966 | NULL |
| 1967 | }; |
| 1968 | char **p = usage_msg; |
| 1969 | |
| 1970 | PerlIO_printf(PerlIO_stdout(), |
| 1971 | "\nUsage: %s [switches] [--] [programfile] [arguments]", |
| 1972 | name); |
| 1973 | while (*p) |
| 1974 | PerlIO_printf(PerlIO_stdout(), "\n %s", *p++); |
| 1975 | } |
| 1976 | |
| 1977 | /* This routine handles any switches that can be given during run */ |
| 1978 | |
| 1979 | char * |
| 1980 | Perl_moreswitches(pTHX_ char *s) |
| 1981 | { |
| 1982 | I32 numlen; |
| 1983 | U32 rschar; |
| 1984 | |
| 1985 | switch (*s) { |
| 1986 | case '0': |
| 1987 | { |
| 1988 | dTHR; |
| 1989 | numlen = 0; /* disallow underscores */ |
| 1990 | rschar = (U32)scan_oct(s, 4, &numlen); |
| 1991 | SvREFCNT_dec(PL_nrs); |
| 1992 | if (rschar & ~((U8)~0)) |
| 1993 | PL_nrs = &PL_sv_undef; |
| 1994 | else if (!rschar && numlen >= 2) |
| 1995 | PL_nrs = newSVpvn("", 0); |
| 1996 | else { |
| 1997 | char ch = rschar; |
| 1998 | PL_nrs = newSVpvn(&ch, 1); |
| 1999 | } |
| 2000 | return s + numlen; |
| 2001 | } |
| 2002 | case 'C': |
| 2003 | PL_widesyscalls = TRUE; |
| 2004 | s++; |
| 2005 | return s; |
| 2006 | case 'F': |
| 2007 | PL_minus_F = TRUE; |
| 2008 | PL_splitstr = savepv(s + 1); |
| 2009 | s += strlen(s); |
| 2010 | return s; |
| 2011 | case 'a': |
| 2012 | PL_minus_a = TRUE; |
| 2013 | s++; |
| 2014 | return s; |
| 2015 | case 'c': |
| 2016 | PL_minus_c = TRUE; |
| 2017 | s++; |
| 2018 | return s; |
| 2019 | case 'd': |
| 2020 | forbid_setid("-d"); |
| 2021 | s++; |
| 2022 | if (*s == ':' || *s == '=') { |
| 2023 | my_setenv("PERL5DB", Perl_form(aTHX_ "use Devel::%s;", ++s)); |
| 2024 | s += strlen(s); |
| 2025 | } |
| 2026 | if (!PL_perldb) { |
| 2027 | PL_perldb = PERLDB_ALL; |
| 2028 | init_debugger(); |
| 2029 | } |
| 2030 | return s; |
| 2031 | case 'D': |
| 2032 | { |
| 2033 | #ifdef DEBUGGING |
| 2034 | forbid_setid("-D"); |
| 2035 | if (isALPHA(s[1])) { |
| 2036 | static char debopts[] = "psltocPmfrxuLHXDS"; |
| 2037 | char *d; |
| 2038 | |
| 2039 | for (s++; *s && (d = strchr(debopts,*s)); s++) |
| 2040 | PL_debug |= 1 << (d - debopts); |
| 2041 | } |
| 2042 | else { |
| 2043 | PL_debug = atoi(s+1); |
| 2044 | for (s++; isDIGIT(*s); s++) ; |
| 2045 | } |
| 2046 | PL_debug |= 0x80000000; |
| 2047 | #else |
| 2048 | dTHR; |
| 2049 | if (ckWARN_d(WARN_DEBUGGING)) |
| 2050 | Perl_warner(aTHX_ WARN_DEBUGGING, |
| 2051 | "Recompile perl with -DDEBUGGING to use -D switch\n"); |
| 2052 | for (s++; isALNUM(*s); s++) ; |
| 2053 | #endif |
| 2054 | /*SUPPRESS 530*/ |
| 2055 | return s; |
| 2056 | } |
| 2057 | case 'h': |
| 2058 | usage(PL_origargv[0]); |
| 2059 | PerlProc_exit(0); |
| 2060 | case 'i': |
| 2061 | if (PL_inplace) |
| 2062 | Safefree(PL_inplace); |
| 2063 | PL_inplace = savepv(s+1); |
| 2064 | /*SUPPRESS 530*/ |
| 2065 | for (s = PL_inplace; *s && !isSPACE(*s); s++) ; |
| 2066 | if (*s) { |
| 2067 | *s++ = '\0'; |
| 2068 | if (*s == '-') /* Additional switches on #! line. */ |
| 2069 | s++; |
| 2070 | } |
| 2071 | return s; |
| 2072 | case 'I': /* -I handled both here and in parse_perl() */ |
| 2073 | forbid_setid("-I"); |
| 2074 | ++s; |
| 2075 | while (*s && isSPACE(*s)) |
| 2076 | ++s; |
| 2077 | if (*s) { |
| 2078 | char *e, *p; |
| 2079 | p = s; |
| 2080 | /* ignore trailing spaces (possibly followed by other switches) */ |
| 2081 | do { |
| 2082 | for (e = p; *e && !isSPACE(*e); e++) ; |
| 2083 | p = e; |
| 2084 | while (isSPACE(*p)) |
| 2085 | p++; |
| 2086 | } while (*p && *p != '-'); |
| 2087 | e = savepvn(s, e-s); |
| 2088 | incpush(e, TRUE, TRUE); |
| 2089 | Safefree(e); |
| 2090 | s = p; |
| 2091 | if (*s == '-') |
| 2092 | s++; |
| 2093 | } |
| 2094 | else |
| 2095 | Perl_croak(aTHX_ "No directory specified for -I"); |
| 2096 | return s; |
| 2097 | case 'l': |
| 2098 | PL_minus_l = TRUE; |
| 2099 | s++; |
| 2100 | if (PL_ors) |
| 2101 | Safefree(PL_ors); |
| 2102 | if (isDIGIT(*s)) { |
| 2103 | PL_ors = savepv("\n"); |
| 2104 | PL_orslen = 1; |
| 2105 | numlen = 0; /* disallow underscores */ |
| 2106 | *PL_ors = (char)scan_oct(s, 3 + (*s == '0'), &numlen); |
| 2107 | s += numlen; |
| 2108 | } |
| 2109 | else { |
| 2110 | dTHR; |
| 2111 | if (RsPARA(PL_nrs)) { |
| 2112 | PL_ors = "\n\n"; |
| 2113 | PL_orslen = 2; |
| 2114 | } |
| 2115 | else |
| 2116 | PL_ors = SvPV(PL_nrs, PL_orslen); |
| 2117 | PL_ors = savepvn(PL_ors, PL_orslen); |
| 2118 | } |
| 2119 | return s; |
| 2120 | case 'M': |
| 2121 | forbid_setid("-M"); /* XXX ? */ |
| 2122 | /* FALL THROUGH */ |
| 2123 | case 'm': |
| 2124 | forbid_setid("-m"); /* XXX ? */ |
| 2125 | if (*++s) { |
| 2126 | char *start; |
| 2127 | SV *sv; |
| 2128 | char *use = "use "; |
| 2129 | /* -M-foo == 'no foo' */ |
| 2130 | if (*s == '-') { use = "no "; ++s; } |
| 2131 | sv = newSVpv(use,0); |
| 2132 | start = s; |
| 2133 | /* We allow -M'Module qw(Foo Bar)' */ |
| 2134 | while(isALNUM(*s) || *s==':') ++s; |
| 2135 | if (*s != '=') { |
| 2136 | sv_catpv(sv, start); |
| 2137 | if (*(start-1) == 'm') { |
| 2138 | if (*s != '\0') |
| 2139 | Perl_croak(aTHX_ "Can't use '%c' after -mname", *s); |
| 2140 | sv_catpv( sv, " ()"); |
| 2141 | } |
| 2142 | } else { |
| 2143 | if (s == start) |
| 2144 | Perl_croak(aTHX_ "Module name required with -%c option", |
| 2145 | s[-1]); |
| 2146 | sv_catpvn(sv, start, s-start); |
| 2147 | sv_catpv(sv, " split(/,/,q{"); |
| 2148 | sv_catpv(sv, ++s); |
| 2149 | sv_catpv(sv, "})"); |
| 2150 | } |
| 2151 | s += strlen(s); |
| 2152 | if (!PL_preambleav) |
| 2153 | PL_preambleav = newAV(); |
| 2154 | av_push(PL_preambleav, sv); |
| 2155 | } |
| 2156 | else |
| 2157 | Perl_croak(aTHX_ "No space allowed after -%c", *(s-1)); |
| 2158 | return s; |
| 2159 | case 'n': |
| 2160 | PL_minus_n = TRUE; |
| 2161 | s++; |
| 2162 | return s; |
| 2163 | case 'p': |
| 2164 | PL_minus_p = TRUE; |
| 2165 | s++; |
| 2166 | return s; |
| 2167 | case 's': |
| 2168 | forbid_setid("-s"); |
| 2169 | PL_doswitches = TRUE; |
| 2170 | s++; |
| 2171 | return s; |
| 2172 | case 'T': |
| 2173 | if (!PL_tainting) |
| 2174 | Perl_croak(aTHX_ "Too late for \"-T\" option"); |
| 2175 | s++; |
| 2176 | return s; |
| 2177 | case 'u': |
| 2178 | PL_do_undump = TRUE; |
| 2179 | s++; |
| 2180 | return s; |
| 2181 | case 'U': |
| 2182 | PL_unsafe = TRUE; |
| 2183 | s++; |
| 2184 | return s; |
| 2185 | case 'v': |
| 2186 | PerlIO_printf(PerlIO_stdout(), |
| 2187 | Perl_form(aTHX_ "\nThis is perl, v%vd built for %s", |
| 2188 | PL_patchlevel, ARCHNAME)); |
| 2189 | #if defined(LOCAL_PATCH_COUNT) |
| 2190 | if (LOCAL_PATCH_COUNT > 0) |
| 2191 | PerlIO_printf(PerlIO_stdout(), |
| 2192 | "\n(with %d registered patch%s, " |
| 2193 | "see perl -V for more detail)", |
| 2194 | (int)LOCAL_PATCH_COUNT, |
| 2195 | (LOCAL_PATCH_COUNT!=1) ? "es" : ""); |
| 2196 | #endif |
| 2197 | |
| 2198 | PerlIO_printf(PerlIO_stdout(), |
| 2199 | "\n\nCopyright 1987-2000, Larry Wall\n"); |
| 2200 | #ifdef MSDOS |
| 2201 | PerlIO_printf(PerlIO_stdout(), |
| 2202 | "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n"); |
| 2203 | #endif |
| 2204 | #ifdef DJGPP |
| 2205 | PerlIO_printf(PerlIO_stdout(), |
| 2206 | "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n" |
| 2207 | "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n"); |
| 2208 | #endif |
| 2209 | #ifdef OS2 |
| 2210 | PerlIO_printf(PerlIO_stdout(), |
| 2211 | "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n" |
| 2212 | "Version 5 port Copyright (c) 1994-1999, Andreas Kaiser, Ilya Zakharevich\n"); |
| 2213 | #endif |
| 2214 | #ifdef atarist |
| 2215 | PerlIO_printf(PerlIO_stdout(), |
| 2216 | "atariST series port, ++jrb bammi@cadence.com\n"); |
| 2217 | #endif |
| 2218 | #ifdef __BEOS__ |
| 2219 | PerlIO_printf(PerlIO_stdout(), |
| 2220 | "BeOS port Copyright Tom Spindler, 1997-1999\n"); |
| 2221 | #endif |
| 2222 | #ifdef MPE |
| 2223 | PerlIO_printf(PerlIO_stdout(), |
| 2224 | "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-1999\n"); |
| 2225 | #endif |
| 2226 | #ifdef OEMVS |
| 2227 | PerlIO_printf(PerlIO_stdout(), |
| 2228 | "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n"); |
| 2229 | #endif |
| 2230 | #ifdef __VOS__ |
| 2231 | PerlIO_printf(PerlIO_stdout(), |
| 2232 | "Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n"); |
| 2233 | #endif |
| 2234 | #ifdef __OPEN_VM |
| 2235 | PerlIO_printf(PerlIO_stdout(), |
| 2236 | "VM/ESA port by Neale Ferguson, 1998-1999\n"); |
| 2237 | #endif |
| 2238 | #ifdef POSIX_BC |
| 2239 | PerlIO_printf(PerlIO_stdout(), |
| 2240 | "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n"); |
| 2241 | #endif |
| 2242 | #ifdef __MINT__ |
| 2243 | PerlIO_printf(PerlIO_stdout(), |
| 2244 | "MiNT port by Guido Flohr, 1997-1999\n"); |
| 2245 | #endif |
| 2246 | #ifdef EPOC |
| 2247 | PerlIO_printf(PerlIO_stdout(), |
| 2248 | "EPOC port by Olaf Flebbe, 1999-2000\n"); |
| 2249 | #endif |
| 2250 | #ifdef BINARY_BUILD_NOTICE |
| 2251 | BINARY_BUILD_NOTICE; |
| 2252 | #endif |
| 2253 | PerlIO_printf(PerlIO_stdout(), |
| 2254 | "\n\ |
| 2255 | Perl may be copied only under the terms of either the Artistic License or the\n\ |
| 2256 | GNU General Public License, which may be found in the Perl 5.0 source kit.\n\n\ |
| 2257 | Complete documentation for Perl, including FAQ lists, should be found on\n\ |
| 2258 | this system using `man perl' or `perldoc perl'. If you have access to the\n\ |
| 2259 | Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n"); |
| 2260 | PerlProc_exit(0); |
| 2261 | case 'w': |
| 2262 | if (! (PL_dowarn & G_WARN_ALL_MASK)) |
| 2263 | PL_dowarn |= G_WARN_ON; |
| 2264 | s++; |
| 2265 | return s; |
| 2266 | case 'W': |
| 2267 | PL_dowarn = G_WARN_ALL_ON|G_WARN_ON; |
| 2268 | PL_compiling.cop_warnings = pWARN_ALL ; |
| 2269 | s++; |
| 2270 | return s; |
| 2271 | case 'X': |
| 2272 | PL_dowarn = G_WARN_ALL_OFF; |
| 2273 | PL_compiling.cop_warnings = pWARN_NONE ; |
| 2274 | s++; |
| 2275 | return s; |
| 2276 | case '*': |
| 2277 | case ' ': |
| 2278 | if (s[1] == '-') /* Additional switches on #! line. */ |
| 2279 | return s+2; |
| 2280 | break; |
| 2281 | case '-': |
| 2282 | case 0: |
| 2283 | #if defined(WIN32) || !defined(PERL_STRICT_CR) |
| 2284 | case '\r': |
| 2285 | #endif |
| 2286 | case '\n': |
| 2287 | case '\t': |
| 2288 | break; |
| 2289 | #ifdef ALTERNATE_SHEBANG |
| 2290 | case 'S': /* OS/2 needs -S on "extproc" line. */ |
| 2291 | break; |
| 2292 | #endif |
| 2293 | case 'P': |
| 2294 | if (PL_preprocess) |
| 2295 | return s+1; |
| 2296 | /* FALL THROUGH */ |
| 2297 | default: |
| 2298 | Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s); |
| 2299 | } |
| 2300 | return Nullch; |
| 2301 | } |
| 2302 | |
| 2303 | /* compliments of Tom Christiansen */ |
| 2304 | |
| 2305 | /* unexec() can be found in the Gnu emacs distribution */ |
| 2306 | /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */ |
| 2307 | |
| 2308 | void |
| 2309 | Perl_my_unexec(pTHX) |
| 2310 | { |
| 2311 | #ifdef UNEXEC |
| 2312 | SV* prog; |
| 2313 | SV* file; |
| 2314 | int status = 1; |
| 2315 | extern int etext; |
| 2316 | |
| 2317 | prog = newSVpv(BIN_EXP, 0); |
| 2318 | sv_catpv(prog, "/perl"); |
| 2319 | file = newSVpv(PL_origfilename, 0); |
| 2320 | sv_catpv(file, ".perldump"); |
| 2321 | |
| 2322 | unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0); |
| 2323 | /* unexec prints msg to stderr in case of failure */ |
| 2324 | PerlProc_exit(status); |
| 2325 | #else |
| 2326 | # ifdef VMS |
| 2327 | # include <lib$routines.h> |
| 2328 | lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */ |
| 2329 | # else |
| 2330 | ABORT(); /* for use with undump */ |
| 2331 | # endif |
| 2332 | #endif |
| 2333 | } |
| 2334 | |
| 2335 | /* initialize curinterp */ |
| 2336 | STATIC void |
| 2337 | S_init_interp(pTHX) |
| 2338 | { |
| 2339 | |
| 2340 | #ifdef PERL_OBJECT /* XXX kludge */ |
| 2341 | #define I_REINIT \ |
| 2342 | STMT_START { \ |
| 2343 | PL_chopset = " \n-"; \ |
| 2344 | PL_copline = NOLINE; \ |
| 2345 | PL_curcop = &PL_compiling;\ |
| 2346 | PL_curcopdb = NULL; \ |
| 2347 | PL_dbargs = 0; \ |
| 2348 | PL_dumpindent = 4; \ |
| 2349 | PL_laststatval = -1; \ |
| 2350 | PL_laststype = OP_STAT; \ |
| 2351 | PL_maxscream = -1; \ |
| 2352 | PL_maxsysfd = MAXSYSFD; \ |
| 2353 | PL_statname = Nullsv; \ |
| 2354 | PL_tmps_floor = -1; \ |
| 2355 | PL_tmps_ix = -1; \ |
| 2356 | PL_op_mask = NULL; \ |
| 2357 | PL_laststatval = -1; \ |
| 2358 | PL_laststype = OP_STAT; \ |
| 2359 | PL_mess_sv = Nullsv; \ |
| 2360 | PL_splitstr = " "; \ |
| 2361 | PL_generation = 100; \ |
| 2362 | PL_exitlist = NULL; \ |
| 2363 | PL_exitlistlen = 0; \ |
| 2364 | PL_regindent = 0; \ |
| 2365 | PL_in_clean_objs = FALSE; \ |
| 2366 | PL_in_clean_all = FALSE; \ |
| 2367 | PL_profiledata = NULL; \ |
| 2368 | PL_rsfp = Nullfp; \ |
| 2369 | PL_rsfp_filters = Nullav; \ |
| 2370 | PL_dirty = FALSE; \ |
| 2371 | } STMT_END |
| 2372 | I_REINIT; |
| 2373 | #else |
| 2374 | # ifdef MULTIPLICITY |
| 2375 | # define PERLVAR(var,type) |
| 2376 | # define PERLVARA(var,n,type) |
| 2377 | # if defined(PERL_IMPLICIT_CONTEXT) |
| 2378 | # if defined(USE_THREADS) |
| 2379 | # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init; |
| 2380 | # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init; |
| 2381 | # else /* !USE_THREADS */ |
| 2382 | # define PERLVARI(var,type,init) aTHX->var = init; |
| 2383 | # define PERLVARIC(var,type,init) aTHX->var = init; |
| 2384 | # endif /* USE_THREADS */ |
| 2385 | # else |
| 2386 | # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init; |
| 2387 | # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init; |
| 2388 | # endif |
| 2389 | # include "intrpvar.h" |
| 2390 | # ifndef USE_THREADS |
| 2391 | # include "thrdvar.h" |
| 2392 | # endif |
| 2393 | # undef PERLVAR |
| 2394 | # undef PERLVARA |
| 2395 | # undef PERLVARI |
| 2396 | # undef PERLVARIC |
| 2397 | # else |
| 2398 | # define PERLVAR(var,type) |
| 2399 | # define PERLVARA(var,n,type) |
| 2400 | # define PERLVARI(var,type,init) PL_##var = init; |
| 2401 | # define PERLVARIC(var,type,init) PL_##var = init; |
| 2402 | # include "intrpvar.h" |
| 2403 | # ifndef USE_THREADS |
| 2404 | # include "thrdvar.h" |
| 2405 | # endif |
| 2406 | # undef PERLVAR |
| 2407 | # undef PERLVARA |
| 2408 | # undef PERLVARI |
| 2409 | # undef PERLVARIC |
| 2410 | # endif |
| 2411 | #endif |
| 2412 | |
| 2413 | } |
| 2414 | |
| 2415 | STATIC void |
| 2416 | S_init_main_stash(pTHX) |
| 2417 | { |
| 2418 | dTHR; |
| 2419 | GV *gv; |
| 2420 | |
| 2421 | /* Note that strtab is a rather special HV. Assumptions are made |
| 2422 | about not iterating on it, and not adding tie magic to it. |
| 2423 | It is properly deallocated in perl_destruct() */ |
| 2424 | PL_strtab = newHV(); |
| 2425 | #ifdef USE_THREADS |
| 2426 | MUTEX_INIT(&PL_strtab_mutex); |
| 2427 | #endif |
| 2428 | HvSHAREKEYS_off(PL_strtab); /* mandatory */ |
| 2429 | hv_ksplit(PL_strtab, 512); |
| 2430 | |
| 2431 | PL_curstash = PL_defstash = newHV(); |
| 2432 | PL_curstname = newSVpvn("main",4); |
| 2433 | gv = gv_fetchpv("main::",TRUE, SVt_PVHV); |
| 2434 | SvREFCNT_dec(GvHV(gv)); |
| 2435 | GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash); |
| 2436 | SvREADONLY_on(gv); |
| 2437 | HvNAME(PL_defstash) = savepv("main"); |
| 2438 | PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV))); |
| 2439 | GvMULTI_on(PL_incgv); |
| 2440 | PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */ |
| 2441 | GvMULTI_on(PL_hintgv); |
| 2442 | PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV); |
| 2443 | PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV)); |
| 2444 | GvMULTI_on(PL_errgv); |
| 2445 | PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */ |
| 2446 | GvMULTI_on(PL_replgv); |
| 2447 | (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */ |
| 2448 | sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */ |
| 2449 | sv_setpvn(ERRSV, "", 0); |
| 2450 | PL_curstash = PL_defstash; |
| 2451 | CopSTASH_set(&PL_compiling, PL_defstash); |
| 2452 | PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV)); |
| 2453 | PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV)); |
| 2454 | PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV)); |
| 2455 | /* We must init $/ before switches are processed. */ |
| 2456 | sv_setpvn(get_sv("/", TRUE), "\n", 1); |
| 2457 | } |
| 2458 | |
| 2459 | STATIC void |
| 2460 | S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript) |
| 2461 | { |
| 2462 | dTHR; |
| 2463 | |
| 2464 | *fdscript = -1; |
| 2465 | |
| 2466 | if (PL_e_script) { |
| 2467 | PL_origfilename = savepv("-e"); |
| 2468 | } |
| 2469 | else { |
| 2470 | /* if find_script() returns, it returns a malloc()-ed value */ |
| 2471 | PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1); |
| 2472 | |
| 2473 | if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) { |
| 2474 | char *s = scriptname + 8; |
| 2475 | *fdscript = atoi(s); |
| 2476 | while (isDIGIT(*s)) |
| 2477 | s++; |
| 2478 | if (*s) { |
| 2479 | scriptname = savepv(s + 1); |
| 2480 | Safefree(PL_origfilename); |
| 2481 | PL_origfilename = scriptname; |
| 2482 | } |
| 2483 | } |
| 2484 | } |
| 2485 | |
| 2486 | CopFILE_set(PL_curcop, PL_origfilename); |
| 2487 | if (strEQ(PL_origfilename,"-")) |
| 2488 | scriptname = ""; |
| 2489 | if (*fdscript >= 0) { |
| 2490 | PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE); |
| 2491 | #if defined(HAS_FCNTL) && defined(F_SETFD) |
| 2492 | if (PL_rsfp) |
| 2493 | fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */ |
| 2494 | #endif |
| 2495 | } |
| 2496 | else if (PL_preprocess) { |
| 2497 | char *cpp_cfg = CPPSTDIN; |
| 2498 | SV *cpp = newSVpvn("",0); |
| 2499 | SV *cmd = NEWSV(0,0); |
| 2500 | |
| 2501 | if (strEQ(cpp_cfg, "cppstdin")) |
| 2502 | Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP); |
| 2503 | sv_catpv(cpp, cpp_cfg); |
| 2504 | |
| 2505 | sv_catpvn(sv, "-I", 2); |
| 2506 | sv_catpv(sv,PRIVLIB_EXP); |
| 2507 | |
| 2508 | #ifdef MSDOS |
| 2509 | Perl_sv_setpvf(aTHX_ cmd, "\ |
| 2510 | sed %s -e \"/^[^#]/b\" \ |
| 2511 | -e \"/^#[ ]*include[ ]/b\" \ |
| 2512 | -e \"/^#[ ]*define[ ]/b\" \ |
| 2513 | -e \"/^#[ ]*if[ ]/b\" \ |
| 2514 | -e \"/^#[ ]*ifdef[ ]/b\" \ |
| 2515 | -e \"/^#[ ]*ifndef[ ]/b\" \ |
| 2516 | -e \"/^#[ ]*else/b\" \ |
| 2517 | -e \"/^#[ ]*elif[ ]/b\" \ |
| 2518 | -e \"/^#[ ]*undef[ ]/b\" \ |
| 2519 | -e \"/^#[ ]*endif/b\" \ |
| 2520 | -e \"s/^#.*//\" \ |
| 2521 | %s | %"SVf" -C %"SVf" %s", |
| 2522 | (PL_doextract ? "-e \"1,/^#/d\n\"" : ""), |
| 2523 | #else |
| 2524 | # ifdef __OPEN_VM |
| 2525 | Perl_sv_setpvf(aTHX_ cmd, "\ |
| 2526 | %s %s -e '/^[^#]/b' \ |
| 2527 | -e '/^#[ ]*include[ ]/b' \ |
| 2528 | -e '/^#[ ]*define[ ]/b' \ |
| 2529 | -e '/^#[ ]*if[ ]/b' \ |
| 2530 | -e '/^#[ ]*ifdef[ ]/b' \ |
| 2531 | -e '/^#[ ]*ifndef[ ]/b' \ |
| 2532 | -e '/^#[ ]*else/b' \ |
| 2533 | -e '/^#[ ]*elif[ ]/b' \ |
| 2534 | -e '/^#[ ]*undef[ ]/b' \ |
| 2535 | -e '/^#[ ]*endif/b' \ |
| 2536 | -e 's/^[ ]*#.*//' \ |
| 2537 | %s | %"SVf" %"SVf" %s", |
| 2538 | # else |
| 2539 | Perl_sv_setpvf(aTHX_ cmd, "\ |
| 2540 | %s %s -e '/^[^#]/b' \ |
| 2541 | -e '/^#[ ]*include[ ]/b' \ |
| 2542 | -e '/^#[ ]*define[ ]/b' \ |
| 2543 | -e '/^#[ ]*if[ ]/b' \ |
| 2544 | -e '/^#[ ]*ifdef[ ]/b' \ |
| 2545 | -e '/^#[ ]*ifndef[ ]/b' \ |
| 2546 | -e '/^#[ ]*else/b' \ |
| 2547 | -e '/^#[ ]*elif[ ]/b' \ |
| 2548 | -e '/^#[ ]*undef[ ]/b' \ |
| 2549 | -e '/^#[ ]*endif/b' \ |
| 2550 | -e 's/^[ ]*#.*//' \ |
| 2551 | %s | %"SVf" -C %"SVf" %s", |
| 2552 | # endif |
| 2553 | #ifdef LOC_SED |
| 2554 | LOC_SED, |
| 2555 | #else |
| 2556 | "sed", |
| 2557 | #endif |
| 2558 | (PL_doextract ? "-e '1,/^#/d\n'" : ""), |
| 2559 | #endif |
| 2560 | scriptname, cpp, sv, CPPMINUS); |
| 2561 | PL_doextract = FALSE; |
| 2562 | #ifdef IAMSUID /* actually, this is caught earlier */ |
| 2563 | if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */ |
| 2564 | #ifdef HAS_SETEUID |
| 2565 | (void)seteuid(PL_uid); /* musn't stay setuid root */ |
| 2566 | #else |
| 2567 | #ifdef HAS_SETREUID |
| 2568 | (void)setreuid((Uid_t)-1, PL_uid); |
| 2569 | #else |
| 2570 | #ifdef HAS_SETRESUID |
| 2571 | (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1); |
| 2572 | #else |
| 2573 | PerlProc_setuid(PL_uid); |
| 2574 | #endif |
| 2575 | #endif |
| 2576 | #endif |
| 2577 | if (PerlProc_geteuid() != PL_uid) |
| 2578 | Perl_croak(aTHX_ "Can't do seteuid!\n"); |
| 2579 | } |
| 2580 | #endif /* IAMSUID */ |
| 2581 | PL_rsfp = PerlProc_popen(SvPVX(cmd), "r"); |
| 2582 | SvREFCNT_dec(cmd); |
| 2583 | SvREFCNT_dec(cpp); |
| 2584 | } |
| 2585 | else if (!*scriptname) { |
| 2586 | forbid_setid("program input from stdin"); |
| 2587 | PL_rsfp = PerlIO_stdin(); |
| 2588 | } |
| 2589 | else { |
| 2590 | PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE); |
| 2591 | #if defined(HAS_FCNTL) && defined(F_SETFD) |
| 2592 | if (PL_rsfp) |
| 2593 | fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */ |
| 2594 | #endif |
| 2595 | } |
| 2596 | if (!PL_rsfp) { |
| 2597 | #ifdef DOSUID |
| 2598 | #ifndef IAMSUID /* in case script is not readable before setuid */ |
| 2599 | if (PL_euid && |
| 2600 | PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 && |
| 2601 | PL_statbuf.st_mode & (S_ISUID|S_ISGID)) |
| 2602 | { |
| 2603 | /* try again */ |
| 2604 | PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP, |
| 2605 | (int)PERL_REVISION, (int)PERL_VERSION, |
| 2606 | (int)PERL_SUBVERSION), PL_origargv); |
| 2607 | Perl_croak(aTHX_ "Can't do setuid\n"); |
| 2608 | } |
| 2609 | #endif |
| 2610 | #endif |
| 2611 | Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n", |
| 2612 | CopFILE(PL_curcop), Strerror(errno)); |
| 2613 | } |
| 2614 | } |
| 2615 | |
| 2616 | /* Mention |
| 2617 | * I_SYSSTATVFS HAS_FSTATVFS |
| 2618 | * I_SYSMOUNT |
| 2619 | * I_STATFS HAS_FSTATFS HAS_GETFSSTAT |
| 2620 | * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT |
| 2621 | * here so that metaconfig picks them up. */ |
| 2622 | |
| 2623 | #ifdef IAMSUID |
| 2624 | STATIC int |
| 2625 | S_fd_on_nosuid_fs(pTHX_ int fd) |
| 2626 | { |
| 2627 | int check_okay = 0; /* able to do all the required sys/libcalls */ |
| 2628 | int on_nosuid = 0; /* the fd is on a nosuid fs */ |
| 2629 | /* |
| 2630 | * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent(). |
| 2631 | * fstatvfs() is UNIX98. |
| 2632 | * fstatfs() is 4.3 BSD. |
| 2633 | * ustat()+getmnt() is pre-4.3 BSD. |
| 2634 | * getmntent() is O(number-of-mounted-filesystems) and can hang on |
| 2635 | * an irrelevant filesystem while trying to reach the right one. |
| 2636 | */ |
| 2637 | |
| 2638 | #undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */ |
| 2639 | |
| 2640 | # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \ |
| 2641 | defined(HAS_FSTATVFS) |
| 2642 | # define FD_ON_NOSUID_CHECK_OKAY |
| 2643 | struct statvfs stfs; |
| 2644 | |
| 2645 | check_okay = fstatvfs(fd, &stfs) == 0; |
| 2646 | on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID); |
| 2647 | # endif /* fstatvfs */ |
| 2648 | |
| 2649 | # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \ |
| 2650 | defined(PERL_MOUNT_NOSUID) && \ |
| 2651 | defined(HAS_FSTATFS) && \ |
| 2652 | defined(HAS_STRUCT_STATFS) && \ |
| 2653 | defined(HAS_STRUCT_STATFS_F_FLAGS) |
| 2654 | # define FD_ON_NOSUID_CHECK_OKAY |
| 2655 | struct statfs stfs; |
| 2656 | |
| 2657 | check_okay = fstatfs(fd, &stfs) == 0; |
| 2658 | on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID); |
| 2659 | # endif /* fstatfs */ |
| 2660 | |
| 2661 | # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \ |
| 2662 | defined(PERL_MOUNT_NOSUID) && \ |
| 2663 | defined(HAS_FSTAT) && \ |
| 2664 | defined(HAS_USTAT) && \ |
| 2665 | defined(HAS_GETMNT) && \ |
| 2666 | defined(HAS_STRUCT_FS_DATA) && \ |
| 2667 | defined(NOSTAT_ONE) |
| 2668 | # define FD_ON_NOSUID_CHECK_OKAY |
| 2669 | struct stat fdst; |
| 2670 | |
| 2671 | if (fstat(fd, &fdst) == 0) { |
| 2672 | struct ustat us; |
| 2673 | if (ustat(fdst.st_dev, &us) == 0) { |
| 2674 | struct fs_data fsd; |
| 2675 | /* NOSTAT_ONE here because we're not examining fields which |
| 2676 | * vary between that case and STAT_ONE. */ |
| 2677 | if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) { |
| 2678 | size_t cmplen = sizeof(us.f_fname); |
| 2679 | if (sizeof(fsd.fd_req.path) < cmplen) |
| 2680 | cmplen = sizeof(fsd.fd_req.path); |
| 2681 | if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) && |
| 2682 | fdst.st_dev == fsd.fd_req.dev) { |
| 2683 | check_okay = 1; |
| 2684 | on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID; |
| 2685 | } |
| 2686 | } |
| 2687 | } |
| 2688 | } |
| 2689 | } |
| 2690 | # endif /* fstat+ustat+getmnt */ |
| 2691 | |
| 2692 | # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \ |
| 2693 | defined(HAS_GETMNTENT) && \ |
| 2694 | defined(HAS_HASMNTOPT) && \ |
| 2695 | defined(MNTOPT_NOSUID) |
| 2696 | # define FD_ON_NOSUID_CHECK_OKAY |
| 2697 | FILE *mtab = fopen("/etc/mtab", "r"); |
| 2698 | struct mntent *entry; |
| 2699 | struct stat stb, fsb; |
| 2700 | |
| 2701 | if (mtab && (fstat(fd, &stb) == 0)) { |
| 2702 | while (entry = getmntent(mtab)) { |
| 2703 | if (stat(entry->mnt_dir, &fsb) == 0 |
| 2704 | && fsb.st_dev == stb.st_dev) |
| 2705 | { |
| 2706 | /* found the filesystem */ |
| 2707 | check_okay = 1; |
| 2708 | if (hasmntopt(entry, MNTOPT_NOSUID)) |
| 2709 | on_nosuid = 1; |
| 2710 | break; |
| 2711 | } /* A single fs may well fail its stat(). */ |
| 2712 | } |
| 2713 | } |
| 2714 | if (mtab) |
| 2715 | fclose(mtab); |
| 2716 | # endif /* getmntent+hasmntopt */ |
| 2717 | |
| 2718 | if (!check_okay) |
| 2719 | Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename); |
| 2720 | return on_nosuid; |
| 2721 | } |
| 2722 | #endif /* IAMSUID */ |
| 2723 | |
| 2724 | STATIC void |
| 2725 | S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript) |
| 2726 | { |
| 2727 | #ifdef IAMSUID |
| 2728 | int which; |
| 2729 | #endif |
| 2730 | |
| 2731 | /* do we need to emulate setuid on scripts? */ |
| 2732 | |
| 2733 | /* This code is for those BSD systems that have setuid #! scripts disabled |
| 2734 | * in the kernel because of a security problem. Merely defining DOSUID |
| 2735 | * in perl will not fix that problem, but if you have disabled setuid |
| 2736 | * scripts in the kernel, this will attempt to emulate setuid and setgid |
| 2737 | * on scripts that have those now-otherwise-useless bits set. The setuid |
| 2738 | * root version must be called suidperl or sperlN.NNN. If regular perl |
| 2739 | * discovers that it has opened a setuid script, it calls suidperl with |
| 2740 | * the same argv that it had. If suidperl finds that the script it has |
| 2741 | * just opened is NOT setuid root, it sets the effective uid back to the |
| 2742 | * uid. We don't just make perl setuid root because that loses the |
| 2743 | * effective uid we had before invoking perl, if it was different from the |
| 2744 | * uid. |
| 2745 | * |
| 2746 | * DOSUID must be defined in both perl and suidperl, and IAMSUID must |
| 2747 | * be defined in suidperl only. suidperl must be setuid root. The |
| 2748 | * Configure script will set this up for you if you want it. |
| 2749 | */ |
| 2750 | |
| 2751 | #ifdef DOSUID |
| 2752 | dTHR; |
| 2753 | char *s, *s2; |
| 2754 | |
| 2755 | if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */ |
| 2756 | Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename); |
| 2757 | if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) { |
| 2758 | I32 len; |
| 2759 | STRLEN n_a; |
| 2760 | |
| 2761 | #ifdef IAMSUID |
| 2762 | #ifndef HAS_SETREUID |
| 2763 | /* On this access check to make sure the directories are readable, |
| 2764 | * there is actually a small window that the user could use to make |
| 2765 | * filename point to an accessible directory. So there is a faint |
| 2766 | * chance that someone could execute a setuid script down in a |
| 2767 | * non-accessible directory. I don't know what to do about that. |
| 2768 | * But I don't think it's too important. The manual lies when |
| 2769 | * it says access() is useful in setuid programs. |
| 2770 | */ |
| 2771 | if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/ |
| 2772 | Perl_croak(aTHX_ "Permission denied"); |
| 2773 | #else |
| 2774 | /* If we can swap euid and uid, then we can determine access rights |
| 2775 | * with a simple stat of the file, and then compare device and |
| 2776 | * inode to make sure we did stat() on the same file we opened. |
| 2777 | * Then we just have to make sure he or she can execute it. |
| 2778 | */ |
| 2779 | { |
| 2780 | struct stat tmpstatbuf; |
| 2781 | |
| 2782 | if ( |
| 2783 | #ifdef HAS_SETREUID |
| 2784 | setreuid(PL_euid,PL_uid) < 0 |
| 2785 | #else |
| 2786 | # if HAS_SETRESUID |
| 2787 | setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0 |
| 2788 | # endif |
| 2789 | #endif |
| 2790 | || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid) |
| 2791 | Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */ |
| 2792 | if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0) |
| 2793 | Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */ |
| 2794 | #if defined(IAMSUID) && !defined(NO_NOSUID_CHECK) |
| 2795 | if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp))) |
| 2796 | Perl_croak(aTHX_ "Permission denied"); |
| 2797 | #endif |
| 2798 | if (tmpstatbuf.st_dev != PL_statbuf.st_dev || |
| 2799 | tmpstatbuf.st_ino != PL_statbuf.st_ino) { |
| 2800 | (void)PerlIO_close(PL_rsfp); |
| 2801 | if (PL_rsfp = PerlProc_popen("/bin/mail root","w")) { /* heh, heh */ |
| 2802 | PerlIO_printf(PL_rsfp, |
| 2803 | "User %"Uid_t_f" tried to run dev %ld ino %ld in place of dev %ld ino %ld!\n\ |
| 2804 | (Filename of set-id script was %s, uid %"Uid_t_f" gid %"Gid_t_f".)\n\nSincerely,\nperl\n", |
| 2805 | PL_uid,(long)tmpstatbuf.st_dev, (long)tmpstatbuf.st_ino, |
| 2806 | (long)PL_statbuf.st_dev, (long)PL_statbuf.st_ino, |
| 2807 | CopFILE(PL_curcop), |
| 2808 | PL_statbuf.st_uid, PL_statbuf.st_gid); |
| 2809 | (void)PerlProc_pclose(PL_rsfp); |
| 2810 | } |
| 2811 | Perl_croak(aTHX_ "Permission denied\n"); |
| 2812 | } |
| 2813 | if ( |
| 2814 | #ifdef HAS_SETREUID |
| 2815 | setreuid(PL_uid,PL_euid) < 0 |
| 2816 | #else |
| 2817 | # if defined(HAS_SETRESUID) |
| 2818 | setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0 |
| 2819 | # endif |
| 2820 | #endif |
| 2821 | || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid) |
| 2822 | Perl_croak(aTHX_ "Can't reswap uid and euid"); |
| 2823 | if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */ |
| 2824 | Perl_croak(aTHX_ "Permission denied\n"); |
| 2825 | } |
| 2826 | #endif /* HAS_SETREUID */ |
| 2827 | #endif /* IAMSUID */ |
| 2828 | |
| 2829 | if (!S_ISREG(PL_statbuf.st_mode)) |
| 2830 | Perl_croak(aTHX_ "Permission denied"); |
| 2831 | if (PL_statbuf.st_mode & S_IWOTH) |
| 2832 | Perl_croak(aTHX_ "Setuid/gid script is writable by world"); |
| 2833 | PL_doswitches = FALSE; /* -s is insecure in suid */ |
| 2834 | CopLINE_inc(PL_curcop); |
| 2835 | if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch || |
| 2836 | strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */ |
| 2837 | Perl_croak(aTHX_ "No #! line"); |
| 2838 | s = SvPV(PL_linestr,n_a)+2; |
| 2839 | if (*s == ' ') s++; |
| 2840 | while (!isSPACE(*s)) s++; |
| 2841 | for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 && |
| 2842 | (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ; |
| 2843 | if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */ |
| 2844 | Perl_croak(aTHX_ "Not a perl script"); |
| 2845 | while (*s == ' ' || *s == '\t') s++; |
| 2846 | /* |
| 2847 | * #! arg must be what we saw above. They can invoke it by |
| 2848 | * mentioning suidperl explicitly, but they may not add any strange |
| 2849 | * arguments beyond what #! says if they do invoke suidperl that way. |
| 2850 | */ |
| 2851 | len = strlen(validarg); |
| 2852 | if (strEQ(validarg," PHOOEY ") || |
| 2853 | strnNE(s,validarg,len) || !isSPACE(s[len])) |
| 2854 | Perl_croak(aTHX_ "Args must match #! line"); |
| 2855 | |
| 2856 | #ifndef IAMSUID |
| 2857 | if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) && |
| 2858 | PL_euid == PL_statbuf.st_uid) |
| 2859 | if (!PL_do_undump) |
| 2860 | Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\ |
| 2861 | FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n"); |
| 2862 | #endif /* IAMSUID */ |
| 2863 | |
| 2864 | if (PL_euid) { /* oops, we're not the setuid root perl */ |
| 2865 | (void)PerlIO_close(PL_rsfp); |
| 2866 | #ifndef IAMSUID |
| 2867 | /* try again */ |
| 2868 | PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP, |
| 2869 | (int)PERL_REVISION, (int)PERL_VERSION, |
| 2870 | (int)PERL_SUBVERSION), PL_origargv); |
| 2871 | #endif |
| 2872 | Perl_croak(aTHX_ "Can't do setuid\n"); |
| 2873 | } |
| 2874 | |
| 2875 | if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) { |
| 2876 | #ifdef HAS_SETEGID |
| 2877 | (void)setegid(PL_statbuf.st_gid); |
| 2878 | #else |
| 2879 | #ifdef HAS_SETREGID |
| 2880 | (void)setregid((Gid_t)-1,PL_statbuf.st_gid); |
| 2881 | #else |
| 2882 | #ifdef HAS_SETRESGID |
| 2883 | (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1); |
| 2884 | #else |
| 2885 | PerlProc_setgid(PL_statbuf.st_gid); |
| 2886 | #endif |
| 2887 | #endif |
| 2888 | #endif |
| 2889 | if (PerlProc_getegid() != PL_statbuf.st_gid) |
| 2890 | Perl_croak(aTHX_ "Can't do setegid!\n"); |
| 2891 | } |
| 2892 | if (PL_statbuf.st_mode & S_ISUID) { |
| 2893 | if (PL_statbuf.st_uid != PL_euid) |
| 2894 | #ifdef HAS_SETEUID |
| 2895 | (void)seteuid(PL_statbuf.st_uid); /* all that for this */ |
| 2896 | #else |
| 2897 | #ifdef HAS_SETREUID |
| 2898 | (void)setreuid((Uid_t)-1,PL_statbuf.st_uid); |
| 2899 | #else |
| 2900 | #ifdef HAS_SETRESUID |
| 2901 | (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1); |
| 2902 | #else |
| 2903 | PerlProc_setuid(PL_statbuf.st_uid); |
| 2904 | #endif |
| 2905 | #endif |
| 2906 | #endif |
| 2907 | if (PerlProc_geteuid() != PL_statbuf.st_uid) |
| 2908 | Perl_croak(aTHX_ "Can't do seteuid!\n"); |
| 2909 | } |
| 2910 | else if (PL_uid) { /* oops, mustn't run as root */ |
| 2911 | #ifdef HAS_SETEUID |
| 2912 | (void)seteuid((Uid_t)PL_uid); |
| 2913 | #else |
| 2914 | #ifdef HAS_SETREUID |
| 2915 | (void)setreuid((Uid_t)-1,(Uid_t)PL_uid); |
| 2916 | #else |
| 2917 | #ifdef HAS_SETRESUID |
| 2918 | (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1); |
| 2919 | #else |
| 2920 | PerlProc_setuid((Uid_t)PL_uid); |
| 2921 | #endif |
| 2922 | #endif |
| 2923 | #endif |
| 2924 | if (PerlProc_geteuid() != PL_uid) |
| 2925 | Perl_croak(aTHX_ "Can't do seteuid!\n"); |
| 2926 | } |
| 2927 | init_ids(); |
| 2928 | if (!cando(S_IXUSR,TRUE,&PL_statbuf)) |
| 2929 | Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */ |
| 2930 | } |
| 2931 | #ifdef IAMSUID |
| 2932 | else if (PL_preprocess) |
| 2933 | Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n"); |
| 2934 | else if (fdscript >= 0) |
| 2935 | Perl_croak(aTHX_ "fd script not allowed in suidperl\n"); |
| 2936 | else |
| 2937 | Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n"); |
| 2938 | |
| 2939 | /* We absolutely must clear out any saved ids here, so we */ |
| 2940 | /* exec the real perl, substituting fd script for scriptname. */ |
| 2941 | /* (We pass script name as "subdir" of fd, which perl will grok.) */ |
| 2942 | PerlIO_rewind(PL_rsfp); |
| 2943 | PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */ |
| 2944 | for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ; |
| 2945 | if (!PL_origargv[which]) |
| 2946 | Perl_croak(aTHX_ "Permission denied"); |
| 2947 | PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s", |
| 2948 | PerlIO_fileno(PL_rsfp), PL_origargv[which])); |
| 2949 | #if defined(HAS_FCNTL) && defined(F_SETFD) |
| 2950 | fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */ |
| 2951 | #endif |
| 2952 | PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP, |
| 2953 | (int)PERL_REVISION, (int)PERL_VERSION, |
| 2954 | (int)PERL_SUBVERSION), PL_origargv);/* try again */ |
| 2955 | Perl_croak(aTHX_ "Can't do setuid\n"); |
| 2956 | #endif /* IAMSUID */ |
| 2957 | #else /* !DOSUID */ |
| 2958 | if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */ |
| 2959 | #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW |
| 2960 | dTHR; |
| 2961 | PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */ |
| 2962 | if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID) |
| 2963 | || |
| 2964 | (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID) |
| 2965 | ) |
| 2966 | if (!PL_do_undump) |
| 2967 | Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\ |
| 2968 | FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n"); |
| 2969 | #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */ |
| 2970 | /* not set-id, must be wrapped */ |
| 2971 | } |
| 2972 | #endif /* DOSUID */ |
| 2973 | } |
| 2974 | |
| 2975 | STATIC void |
| 2976 | S_find_beginning(pTHX) |
| 2977 | { |
| 2978 | register char *s, *s2; |
| 2979 | |
| 2980 | /* skip forward in input to the real script? */ |
| 2981 | |
| 2982 | forbid_setid("-x"); |
| 2983 | while (PL_doextract) { |
| 2984 | if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) |
| 2985 | Perl_croak(aTHX_ "No Perl script found in input\n"); |
| 2986 | if (*s == '#' && s[1] == '!' && (s = instr(s,"perl"))) { |
| 2987 | PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */ |
| 2988 | PL_doextract = FALSE; |
| 2989 | while (*s && !(isSPACE (*s) || *s == '#')) s++; |
| 2990 | s2 = s; |
| 2991 | while (*s == ' ' || *s == '\t') s++; |
| 2992 | if (*s++ == '-') { |
| 2993 | while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--; |
| 2994 | if (strnEQ(s2-4,"perl",4)) |
| 2995 | /*SUPPRESS 530*/ |
| 2996 | while ((s = moreswitches(s))) |
| 2997 | ; |
| 2998 | } |
| 2999 | } |
| 3000 | } |
| 3001 | } |
| 3002 | |
| 3003 | |
| 3004 | STATIC void |
| 3005 | S_init_ids(pTHX) |
| 3006 | { |
| 3007 | PL_uid = PerlProc_getuid(); |
| 3008 | PL_euid = PerlProc_geteuid(); |
| 3009 | PL_gid = PerlProc_getgid(); |
| 3010 | PL_egid = PerlProc_getegid(); |
| 3011 | #ifdef VMS |
| 3012 | PL_uid |= PL_gid << 16; |
| 3013 | PL_euid |= PL_egid << 16; |
| 3014 | #endif |
| 3015 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); |
| 3016 | } |
| 3017 | |
| 3018 | STATIC void |
| 3019 | S_forbid_setid(pTHX_ char *s) |
| 3020 | { |
| 3021 | if (PL_euid != PL_uid) |
| 3022 | Perl_croak(aTHX_ "No %s allowed while running setuid", s); |
| 3023 | if (PL_egid != PL_gid) |
| 3024 | Perl_croak(aTHX_ "No %s allowed while running setgid", s); |
| 3025 | } |
| 3026 | |
| 3027 | void |
| 3028 | Perl_init_debugger(pTHX) |
| 3029 | { |
| 3030 | dTHR; |
| 3031 | HV *ostash = PL_curstash; |
| 3032 | |
| 3033 | PL_curstash = PL_debstash; |
| 3034 | PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV)))); |
| 3035 | AvREAL_off(PL_dbargs); |
| 3036 | PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV); |
| 3037 | PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV); |
| 3038 | PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV)); |
| 3039 | sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */ |
| 3040 | PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV))); |
| 3041 | sv_setiv(PL_DBsingle, 0); |
| 3042 | PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV))); |
| 3043 | sv_setiv(PL_DBtrace, 0); |
| 3044 | PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV))); |
| 3045 | sv_setiv(PL_DBsignal, 0); |
| 3046 | PL_curstash = ostash; |
| 3047 | } |
| 3048 | |
| 3049 | #ifndef STRESS_REALLOC |
| 3050 | #define REASONABLE(size) (size) |
| 3051 | #else |
| 3052 | #define REASONABLE(size) (1) /* unreasonable */ |
| 3053 | #endif |
| 3054 | |
| 3055 | void |
| 3056 | Perl_init_stacks(pTHX) |
| 3057 | { |
| 3058 | /* start with 128-item stack and 8K cxstack */ |
| 3059 | PL_curstackinfo = new_stackinfo(REASONABLE(128), |
| 3060 | REASONABLE(8192/sizeof(PERL_CONTEXT) - 1)); |
| 3061 | PL_curstackinfo->si_type = PERLSI_MAIN; |
| 3062 | PL_curstack = PL_curstackinfo->si_stack; |
| 3063 | PL_mainstack = PL_curstack; /* remember in case we switch stacks */ |
| 3064 | |
| 3065 | PL_stack_base = AvARRAY(PL_curstack); |
| 3066 | PL_stack_sp = PL_stack_base; |
| 3067 | PL_stack_max = PL_stack_base + AvMAX(PL_curstack); |
| 3068 | |
| 3069 | New(50,PL_tmps_stack,REASONABLE(128),SV*); |
| 3070 | PL_tmps_floor = -1; |
| 3071 | PL_tmps_ix = -1; |
| 3072 | PL_tmps_max = REASONABLE(128); |
| 3073 | |
| 3074 | New(54,PL_markstack,REASONABLE(32),I32); |
| 3075 | PL_markstack_ptr = PL_markstack; |
| 3076 | PL_markstack_max = PL_markstack + REASONABLE(32); |
| 3077 | |
| 3078 | SET_MARK_OFFSET; |
| 3079 | |
| 3080 | New(54,PL_scopestack,REASONABLE(32),I32); |
| 3081 | PL_scopestack_ix = 0; |
| 3082 | PL_scopestack_max = REASONABLE(32); |
| 3083 | |
| 3084 | New(54,PL_savestack,REASONABLE(128),ANY); |
| 3085 | PL_savestack_ix = 0; |
| 3086 | PL_savestack_max = REASONABLE(128); |
| 3087 | |
| 3088 | New(54,PL_retstack,REASONABLE(16),OP*); |
| 3089 | PL_retstack_ix = 0; |
| 3090 | PL_retstack_max = REASONABLE(16); |
| 3091 | } |
| 3092 | |
| 3093 | #undef REASONABLE |
| 3094 | |
| 3095 | STATIC void |
| 3096 | S_nuke_stacks(pTHX) |
| 3097 | { |
| 3098 | dTHR; |
| 3099 | while (PL_curstackinfo->si_next) |
| 3100 | PL_curstackinfo = PL_curstackinfo->si_next; |
| 3101 | while (PL_curstackinfo) { |
| 3102 | PERL_SI *p = PL_curstackinfo->si_prev; |
| 3103 | /* curstackinfo->si_stack got nuked by sv_free_arenas() */ |
| 3104 | Safefree(PL_curstackinfo->si_cxstack); |
| 3105 | Safefree(PL_curstackinfo); |
| 3106 | PL_curstackinfo = p; |
| 3107 | } |
| 3108 | Safefree(PL_tmps_stack); |
| 3109 | Safefree(PL_markstack); |
| 3110 | Safefree(PL_scopestack); |
| 3111 | Safefree(PL_savestack); |
| 3112 | Safefree(PL_retstack); |
| 3113 | } |
| 3114 | |
| 3115 | #ifndef PERL_OBJECT |
| 3116 | static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */ |
| 3117 | #endif |
| 3118 | |
| 3119 | STATIC void |
| 3120 | S_init_lexer(pTHX) |
| 3121 | { |
| 3122 | #ifdef PERL_OBJECT |
| 3123 | PerlIO *tmpfp; |
| 3124 | #endif |
| 3125 | tmpfp = PL_rsfp; |
| 3126 | PL_rsfp = Nullfp; |
| 3127 | lex_start(PL_linestr); |
| 3128 | PL_rsfp = tmpfp; |
| 3129 | PL_subname = newSVpvn("main",4); |
| 3130 | } |
| 3131 | |
| 3132 | STATIC void |
| 3133 | S_init_predump_symbols(pTHX) |
| 3134 | { |
| 3135 | dTHR; |
| 3136 | GV *tmpgv; |
| 3137 | IO *io; |
| 3138 | |
| 3139 | sv_setpvn(get_sv("\"", TRUE), " ", 1); |
| 3140 | PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO); |
| 3141 | GvMULTI_on(PL_stdingv); |
| 3142 | io = GvIOp(PL_stdingv); |
| 3143 | IoIFP(io) = PerlIO_stdin(); |
| 3144 | tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV); |
| 3145 | GvMULTI_on(tmpgv); |
| 3146 | GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io); |
| 3147 | |
| 3148 | tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO); |
| 3149 | GvMULTI_on(tmpgv); |
| 3150 | io = GvIOp(tmpgv); |
| 3151 | IoOFP(io) = IoIFP(io) = PerlIO_stdout(); |
| 3152 | setdefout(tmpgv); |
| 3153 | tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV); |
| 3154 | GvMULTI_on(tmpgv); |
| 3155 | GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io); |
| 3156 | |
| 3157 | PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO); |
| 3158 | GvMULTI_on(PL_stderrgv); |
| 3159 | io = GvIOp(PL_stderrgv); |
| 3160 | IoOFP(io) = IoIFP(io) = PerlIO_stderr(); |
| 3161 | tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV); |
| 3162 | GvMULTI_on(tmpgv); |
| 3163 | GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io); |
| 3164 | |
| 3165 | PL_statname = NEWSV(66,0); /* last filename we did stat on */ |
| 3166 | |
| 3167 | if (!PL_osname) |
| 3168 | PL_osname = savepv(OSNAME); |
| 3169 | } |
| 3170 | |
| 3171 | STATIC void |
| 3172 | S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env) |
| 3173 | { |
| 3174 | dTHR; |
| 3175 | char *s; |
| 3176 | SV *sv; |
| 3177 | GV* tmpgv; |
| 3178 | |
| 3179 | argc--,argv++; /* skip name of script */ |
| 3180 | if (PL_doswitches) { |
| 3181 | for (; argc > 0 && **argv == '-'; argc--,argv++) { |
| 3182 | if (!argv[0][1]) |
| 3183 | break; |
| 3184 | if (argv[0][1] == '-' && !argv[0][2]) { |
| 3185 | argc--,argv++; |
| 3186 | break; |
| 3187 | } |
| 3188 | if ((s = strchr(argv[0], '='))) { |
| 3189 | *s++ = '\0'; |
| 3190 | sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s); |
| 3191 | } |
| 3192 | else |
| 3193 | sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1); |
| 3194 | } |
| 3195 | } |
| 3196 | PL_toptarget = NEWSV(0,0); |
| 3197 | sv_upgrade(PL_toptarget, SVt_PVFM); |
| 3198 | sv_setpvn(PL_toptarget, "", 0); |
| 3199 | PL_bodytarget = NEWSV(0,0); |
| 3200 | sv_upgrade(PL_bodytarget, SVt_PVFM); |
| 3201 | sv_setpvn(PL_bodytarget, "", 0); |
| 3202 | PL_formtarget = PL_bodytarget; |
| 3203 | |
| 3204 | TAINT; |
| 3205 | if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) { |
| 3206 | sv_setpv(GvSV(tmpgv),PL_origfilename); |
| 3207 | magicname("0", "0", 1); |
| 3208 | } |
| 3209 | if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV))) |
| 3210 | #ifdef OS2 |
| 3211 | sv_setpv(GvSV(tmpgv), os2_execname()); |
| 3212 | #else |
| 3213 | sv_setpv(GvSV(tmpgv),PL_origargv[0]); |
| 3214 | #endif |
| 3215 | if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) { |
| 3216 | GvMULTI_on(PL_argvgv); |
| 3217 | (void)gv_AVadd(PL_argvgv); |
| 3218 | av_clear(GvAVn(PL_argvgv)); |
| 3219 | for (; argc > 0; argc--,argv++) { |
| 3220 | SV *sv = newSVpv(argv[0],0); |
| 3221 | av_push(GvAVn(PL_argvgv),sv); |
| 3222 | if (PL_widesyscalls) |
| 3223 | sv_utf8_upgrade(sv); |
| 3224 | } |
| 3225 | } |
| 3226 | if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) { |
| 3227 | HV *hv; |
| 3228 | GvMULTI_on(PL_envgv); |
| 3229 | hv = GvHVn(PL_envgv); |
| 3230 | hv_magic(hv, PL_envgv, 'E'); |
| 3231 | #if !defined( VMS) && !defined(EPOC) /* VMS doesn't have environ array */ |
| 3232 | /* Note that if the supplied env parameter is actually a copy |
| 3233 | of the global environ then it may now point to free'd memory |
| 3234 | if the environment has been modified since. To avoid this |
| 3235 | problem we treat env==NULL as meaning 'use the default' |
| 3236 | */ |
| 3237 | if (!env) |
| 3238 | env = environ; |
| 3239 | if (env != environ) |
| 3240 | environ[0] = Nullch; |
| 3241 | for (; *env; env++) { |
| 3242 | if (!(s = strchr(*env,'='))) |
| 3243 | continue; |
| 3244 | *s++ = '\0'; |
| 3245 | #if defined(MSDOS) |
| 3246 | (void)strupr(*env); |
| 3247 | #endif |
| 3248 | sv = newSVpv(s--,0); |
| 3249 | (void)hv_store(hv, *env, s - *env, sv, 0); |
| 3250 | *s = '='; |
| 3251 | #if defined(__BORLANDC__) && defined(USE_WIN32_RTL_ENV) |
| 3252 | /* Sins of the RTL. See note in my_setenv(). */ |
| 3253 | (void)PerlEnv_putenv(savepv(*env)); |
| 3254 | #endif |
| 3255 | } |
| 3256 | #endif |
| 3257 | #ifdef DYNAMIC_ENV_FETCH |
| 3258 | HvNAME(hv) = savepv(ENV_HV_NAME); |
| 3259 | #endif |
| 3260 | } |
| 3261 | TAINT_NOT; |
| 3262 | if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV))) |
| 3263 | sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid()); |
| 3264 | } |
| 3265 | |
| 3266 | STATIC void |
| 3267 | S_init_perllib(pTHX) |
| 3268 | { |
| 3269 | char *s; |
| 3270 | if (!PL_tainting) { |
| 3271 | #ifndef VMS |
| 3272 | s = PerlEnv_getenv("PERL5LIB"); |
| 3273 | if (s) |
| 3274 | incpush(s, TRUE, TRUE); |
| 3275 | else |
| 3276 | incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE); |
| 3277 | #else /* VMS */ |
| 3278 | /* Treat PERL5?LIB as a possible search list logical name -- the |
| 3279 | * "natural" VMS idiom for a Unix path string. We allow each |
| 3280 | * element to be a set of |-separated directories for compatibility. |
| 3281 | */ |
| 3282 | char buf[256]; |
| 3283 | int idx = 0; |
| 3284 | if (my_trnlnm("PERL5LIB",buf,0)) |
| 3285 | do { incpush(buf,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx)); |
| 3286 | else |
| 3287 | while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE); |
| 3288 | #endif /* VMS */ |
| 3289 | } |
| 3290 | |
| 3291 | /* Use the ~-expanded versions of APPLLIB (undocumented), |
| 3292 | ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB |
| 3293 | */ |
| 3294 | #ifdef APPLLIB_EXP |
| 3295 | incpush(APPLLIB_EXP, TRUE, TRUE); |
| 3296 | #endif |
| 3297 | |
| 3298 | #ifdef ARCHLIB_EXP |
| 3299 | incpush(ARCHLIB_EXP, FALSE, FALSE); |
| 3300 | #endif |
| 3301 | #ifndef PRIVLIB_EXP |
| 3302 | # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl" |
| 3303 | #endif |
| 3304 | #if defined(WIN32) |
| 3305 | incpush(PRIVLIB_EXP, TRUE, FALSE); |
| 3306 | #else |
| 3307 | incpush(PRIVLIB_EXP, FALSE, FALSE); |
| 3308 | #endif |
| 3309 | |
| 3310 | #ifdef SITEARCH_EXP |
| 3311 | /* sitearch is always relative to sitelib on Windows for |
| 3312 | * DLL-based path intuition to work correctly */ |
| 3313 | # if !defined(WIN32) |
| 3314 | incpush(SITEARCH_EXP, FALSE, FALSE); |
| 3315 | # endif |
| 3316 | #endif |
| 3317 | |
| 3318 | #ifdef SITELIB_EXP |
| 3319 | # if defined(WIN32) |
| 3320 | incpush(SITELIB_EXP, TRUE, FALSE); /* this picks up sitearch as well */ |
| 3321 | # else |
| 3322 | incpush(SITELIB_EXP, FALSE, FALSE); |
| 3323 | # endif |
| 3324 | #endif |
| 3325 | |
| 3326 | #ifdef SITELIB_STEM /* Search for version-specific dirs below here */ |
| 3327 | incpush(SITELIB_STEM, FALSE, TRUE); |
| 3328 | #endif |
| 3329 | |
| 3330 | #ifdef PERL_VENDORARCH_EXP |
| 3331 | /* vendorarch is always relative to vendorlib on Windows for |
| 3332 | * DLL-based path intuition to work correctly */ |
| 3333 | # if !defined(WIN32) |
| 3334 | incpush(PERL_VENDORARCH_EXP, FALSE, FALSE); |
| 3335 | # endif |
| 3336 | #endif |
| 3337 | |
| 3338 | #ifdef PERL_VENDORLIB_EXP |
| 3339 | # if defined(WIN32) |
| 3340 | incpush(PERL_VENDORLIB_EXP, TRUE, FALSE); /* this picks up vendorarch as well */ |
| 3341 | # else |
| 3342 | incpush(PERL_VENDORLIB_EXP, FALSE, FALSE); |
| 3343 | # endif |
| 3344 | #endif |
| 3345 | |
| 3346 | #ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */ |
| 3347 | incpush(PERL_VENDORLIB_STEM, FALSE, TRUE); |
| 3348 | #endif |
| 3349 | |
| 3350 | #ifdef PERL_OTHERLIBDIRS |
| 3351 | incpush(PERL_OTHERLIBDIRS, TRUE, TRUE); |
| 3352 | #endif |
| 3353 | |
| 3354 | if (!PL_tainting) |
| 3355 | incpush(".", FALSE, FALSE); |
| 3356 | } |
| 3357 | |
| 3358 | #if defined(DOSISH) |
| 3359 | # define PERLLIB_SEP ';' |
| 3360 | #else |
| 3361 | # if defined(VMS) |
| 3362 | # define PERLLIB_SEP '|' |
| 3363 | # else |
| 3364 | # define PERLLIB_SEP ':' |
| 3365 | # endif |
| 3366 | #endif |
| 3367 | #ifndef PERLLIB_MANGLE |
| 3368 | # define PERLLIB_MANGLE(s,n) (s) |
| 3369 | #endif |
| 3370 | |
| 3371 | STATIC void |
| 3372 | S_incpush(pTHX_ char *p, int addsubdirs, int addoldvers) |
| 3373 | { |
| 3374 | SV *subdir = Nullsv; |
| 3375 | |
| 3376 | if (!p || !*p) |
| 3377 | return; |
| 3378 | |
| 3379 | if (addsubdirs || addoldvers) { |
| 3380 | subdir = sv_newmortal(); |
| 3381 | } |
| 3382 | |
| 3383 | /* Break at all separators */ |
| 3384 | while (p && *p) { |
| 3385 | SV *libdir = NEWSV(55,0); |
| 3386 | char *s; |
| 3387 | |
| 3388 | /* skip any consecutive separators */ |
| 3389 | while ( *p == PERLLIB_SEP ) { |
| 3390 | /* Uncomment the next line for PATH semantics */ |
| 3391 | /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */ |
| 3392 | p++; |
| 3393 | } |
| 3394 | |
| 3395 | if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) { |
| 3396 | sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)), |
| 3397 | (STRLEN)(s - p)); |
| 3398 | p = s + 1; |
| 3399 | } |
| 3400 | else { |
| 3401 | sv_setpv(libdir, PERLLIB_MANGLE(p, 0)); |
| 3402 | p = Nullch; /* break out */ |
| 3403 | } |
| 3404 | |
| 3405 | /* |
| 3406 | * BEFORE pushing libdir onto @INC we may first push version- and |
| 3407 | * archname-specific sub-directories. |
| 3408 | */ |
| 3409 | if (addsubdirs || addoldvers) { |
| 3410 | #ifdef PERL_INC_VERSION_LIST |
| 3411 | /* Configure terminates PERL_INC_VERSION_LIST with a NULL */ |
| 3412 | const char *incverlist[] = { PERL_INC_VERSION_LIST }; |
| 3413 | const char **incver; |
| 3414 | #endif |
| 3415 | struct stat tmpstatbuf; |
| 3416 | #ifdef VMS |
| 3417 | char *unix; |
| 3418 | STRLEN len; |
| 3419 | |
| 3420 | if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) { |
| 3421 | len = strlen(unix); |
| 3422 | while (unix[len-1] == '/') len--; /* Cosmetic */ |
| 3423 | sv_usepvn(libdir,unix,len); |
| 3424 | } |
| 3425 | else |
| 3426 | PerlIO_printf(Perl_error_log, |
| 3427 | "Failed to unixify @INC element \"%s\"\n", |
| 3428 | SvPV(libdir,len)); |
| 3429 | #endif |
| 3430 | if (addsubdirs) { |
| 3431 | /* .../version/archname if -d .../version/archname */ |
| 3432 | Perl_sv_setpvf(aTHX_ subdir, "%"SVf"/"PERL_FS_VER_FMT"/%s", |
| 3433 | libdir, |
| 3434 | (int)PERL_REVISION, (int)PERL_VERSION, |
| 3435 | (int)PERL_SUBVERSION, ARCHNAME); |
| 3436 | if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 && |
| 3437 | S_ISDIR(tmpstatbuf.st_mode)) |
| 3438 | av_push(GvAVn(PL_incgv), newSVsv(subdir)); |
| 3439 | |
| 3440 | /* .../version if -d .../version */ |
| 3441 | Perl_sv_setpvf(aTHX_ subdir, "%"SVf"/"PERL_FS_VER_FMT, libdir, |
| 3442 | (int)PERL_REVISION, (int)PERL_VERSION, |
| 3443 | (int)PERL_SUBVERSION); |
| 3444 | if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 && |
| 3445 | S_ISDIR(tmpstatbuf.st_mode)) |
| 3446 | av_push(GvAVn(PL_incgv), newSVsv(subdir)); |
| 3447 | |
| 3448 | /* .../archname if -d .../archname */ |
| 3449 | Perl_sv_setpvf(aTHX_ subdir, "%"SVf"/%s", libdir, ARCHNAME); |
| 3450 | if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 && |
| 3451 | S_ISDIR(tmpstatbuf.st_mode)) |
| 3452 | av_push(GvAVn(PL_incgv), newSVsv(subdir)); |
| 3453 | } |
| 3454 | |
| 3455 | #ifdef PERL_INC_VERSION_LIST |
| 3456 | if (addoldvers) { |
| 3457 | for (incver = incverlist; *incver; incver++) { |
| 3458 | /* .../xxx if -d .../xxx */ |
| 3459 | Perl_sv_setpvf(aTHX_ subdir, "%"SVf"/%s", libdir, *incver); |
| 3460 | if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 && |
| 3461 | S_ISDIR(tmpstatbuf.st_mode)) |
| 3462 | av_push(GvAVn(PL_incgv), newSVsv(subdir)); |
| 3463 | } |
| 3464 | } |
| 3465 | #endif |
| 3466 | } |
| 3467 | |
| 3468 | /* finally push this lib directory on the end of @INC */ |
| 3469 | av_push(GvAVn(PL_incgv), libdir); |
| 3470 | } |
| 3471 | } |
| 3472 | |
| 3473 | #ifdef USE_THREADS |
| 3474 | STATIC struct perl_thread * |
| 3475 | S_init_main_thread(pTHX) |
| 3476 | { |
| 3477 | #if !defined(PERL_IMPLICIT_CONTEXT) |
| 3478 | struct perl_thread *thr; |
| 3479 | #endif |
| 3480 | XPV *xpv; |
| 3481 | |
| 3482 | Newz(53, thr, 1, struct perl_thread); |
| 3483 | PL_curcop = &PL_compiling; |
| 3484 | thr->interp = PERL_GET_INTERP; |
| 3485 | thr->cvcache = newHV(); |
| 3486 | thr->threadsv = newAV(); |
| 3487 | /* thr->threadsvp is set when find_threadsv is called */ |
| 3488 | thr->specific = newAV(); |
| 3489 | thr->flags = THRf_R_JOINABLE; |
| 3490 | MUTEX_INIT(&thr->mutex); |
| 3491 | /* Handcraft thrsv similarly to mess_sv */ |
| 3492 | New(53, PL_thrsv, 1, SV); |
| 3493 | Newz(53, xpv, 1, XPV); |
| 3494 | SvFLAGS(PL_thrsv) = SVt_PV; |
| 3495 | SvANY(PL_thrsv) = (void*)xpv; |
| 3496 | SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */ |
| 3497 | SvPVX(PL_thrsv) = (char*)thr; |
| 3498 | SvCUR_set(PL_thrsv, sizeof(thr)); |
| 3499 | SvLEN_set(PL_thrsv, sizeof(thr)); |
| 3500 | *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */ |
| 3501 | thr->oursv = PL_thrsv; |
| 3502 | PL_chopset = " \n-"; |
| 3503 | PL_dumpindent = 4; |
| 3504 | |
| 3505 | MUTEX_LOCK(&PL_threads_mutex); |
| 3506 | PL_nthreads++; |
| 3507 | thr->tid = 0; |
| 3508 | thr->next = thr; |
| 3509 | thr->prev = thr; |
| 3510 | MUTEX_UNLOCK(&PL_threads_mutex); |
| 3511 | |
| 3512 | #ifdef HAVE_THREAD_INTERN |
| 3513 | Perl_init_thread_intern(thr); |
| 3514 | #endif |
| 3515 | |
| 3516 | #ifdef SET_THREAD_SELF |
| 3517 | SET_THREAD_SELF(thr); |
| 3518 | #else |
| 3519 | thr->self = pthread_self(); |
| 3520 | #endif /* SET_THREAD_SELF */ |
| 3521 | PERL_SET_THX(thr); |
| 3522 | |
| 3523 | /* |
| 3524 | * These must come after the SET_THR because sv_setpvn does |
| 3525 | * SvTAINT and the taint fields require dTHR. |
| 3526 | */ |
| 3527 | PL_toptarget = NEWSV(0,0); |
| 3528 | sv_upgrade(PL_toptarget, SVt_PVFM); |
| 3529 | sv_setpvn(PL_toptarget, "", 0); |
| 3530 | PL_bodytarget = NEWSV(0,0); |
| 3531 | sv_upgrade(PL_bodytarget, SVt_PVFM); |
| 3532 | sv_setpvn(PL_bodytarget, "", 0); |
| 3533 | PL_formtarget = PL_bodytarget; |
| 3534 | thr->errsv = newSVpvn("", 0); |
| 3535 | (void) find_threadsv("@"); /* Ensure $@ is initialised early */ |
| 3536 | |
| 3537 | PL_maxscream = -1; |
| 3538 | PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp); |
| 3539 | PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags); |
| 3540 | PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start); |
| 3541 | PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string); |
| 3542 | PL_regfree = MEMBER_TO_FPTR(Perl_pregfree); |
| 3543 | PL_regindent = 0; |
| 3544 | PL_reginterp_cnt = 0; |
| 3545 | |
| 3546 | return thr; |
| 3547 | } |
| 3548 | #endif /* USE_THREADS */ |
| 3549 | |
| 3550 | void |
| 3551 | Perl_call_list(pTHX_ I32 oldscope, AV *paramList) |
| 3552 | { |
| 3553 | dTHR; |
| 3554 | SV *atsv; |
| 3555 | line_t oldline = CopLINE(PL_curcop); |
| 3556 | CV *cv; |
| 3557 | STRLEN len; |
| 3558 | int ret; |
| 3559 | dJMPENV; |
| 3560 | |
| 3561 | while (AvFILL(paramList) >= 0) { |
| 3562 | cv = (CV*)av_shift(paramList); |
| 3563 | SAVEFREESV(cv); |
| 3564 | #ifdef PERL_FLEXIBLE_EXCEPTIONS |
| 3565 | CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_list_body), cv); |
| 3566 | #else |
| 3567 | JMPENV_PUSH(ret); |
| 3568 | #endif |
| 3569 | switch (ret) { |
| 3570 | case 0: |
| 3571 | #ifndef PERL_FLEXIBLE_EXCEPTIONS |
| 3572 | call_list_body(cv); |
| 3573 | #endif |
| 3574 | atsv = ERRSV; |
| 3575 | (void)SvPV(atsv, len); |
| 3576 | if (len) { |
| 3577 | STRLEN n_a; |
| 3578 | PL_curcop = &PL_compiling; |
| 3579 | CopLINE_set(PL_curcop, oldline); |
| 3580 | if (paramList == PL_beginav) |
| 3581 | sv_catpv(atsv, "BEGIN failed--compilation aborted"); |
| 3582 | else |
| 3583 | Perl_sv_catpvf(aTHX_ atsv, |
| 3584 | "%s failed--call queue aborted", |
| 3585 | paramList == PL_checkav ? "CHECK" |
| 3586 | : paramList == PL_initav ? "INIT" |
| 3587 | : "END"); |
| 3588 | while (PL_scopestack_ix > oldscope) |
| 3589 | LEAVE; |
| 3590 | JMPENV_POP; |
| 3591 | Perl_croak(aTHX_ "%s", SvPVx(atsv, n_a)); |
| 3592 | } |
| 3593 | break; |
| 3594 | case 1: |
| 3595 | STATUS_ALL_FAILURE; |
| 3596 | /* FALL THROUGH */ |
| 3597 | case 2: |
| 3598 | /* my_exit() was called */ |
| 3599 | while (PL_scopestack_ix > oldscope) |
| 3600 | LEAVE; |
| 3601 | FREETMPS; |
| 3602 | PL_curstash = PL_defstash; |
| 3603 | PL_curcop = &PL_compiling; |
| 3604 | CopLINE_set(PL_curcop, oldline); |
| 3605 | JMPENV_POP; |
| 3606 | if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) { |
| 3607 | if (paramList == PL_beginav) |
| 3608 | Perl_croak(aTHX_ "BEGIN failed--compilation aborted"); |
| 3609 | else |
| 3610 | Perl_croak(aTHX_ "%s failed--call queue aborted", |
| 3611 | paramList == PL_checkav ? "CHECK" |
| 3612 | : paramList == PL_initav ? "INIT" |
| 3613 | : "END"); |
| 3614 | } |
| 3615 | my_exit_jump(); |
| 3616 | /* NOTREACHED */ |
| 3617 | case 3: |
| 3618 | if (PL_restartop) { |
| 3619 | PL_curcop = &PL_compiling; |
| 3620 | CopLINE_set(PL_curcop, oldline); |
| 3621 | JMPENV_JUMP(3); |
| 3622 | } |
| 3623 | PerlIO_printf(Perl_error_log, "panic: restartop\n"); |
| 3624 | FREETMPS; |
| 3625 | break; |
| 3626 | } |
| 3627 | JMPENV_POP; |
| 3628 | } |
| 3629 | } |
| 3630 | |
| 3631 | #ifdef PERL_FLEXIBLE_EXCEPTIONS |
| 3632 | STATIC void * |
| 3633 | S_vcall_list_body(pTHX_ va_list args) |
| 3634 | { |
| 3635 | CV *cv = va_arg(args, CV*); |
| 3636 | return call_list_body(cv); |
| 3637 | } |
| 3638 | #endif |
| 3639 | |
| 3640 | STATIC void * |
| 3641 | S_call_list_body(pTHX_ CV *cv) |
| 3642 | { |
| 3643 | PUSHMARK(PL_stack_sp); |
| 3644 | call_sv((SV*)cv, G_EVAL|G_DISCARD); |
| 3645 | return NULL; |
| 3646 | } |
| 3647 | |
| 3648 | void |
| 3649 | Perl_my_exit(pTHX_ U32 status) |
| 3650 | { |
| 3651 | dTHR; |
| 3652 | |
| 3653 | DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n", |
| 3654 | thr, (unsigned long) status)); |
| 3655 | switch (status) { |
| 3656 | case 0: |
| 3657 | STATUS_ALL_SUCCESS; |
| 3658 | break; |
| 3659 | case 1: |
| 3660 | STATUS_ALL_FAILURE; |
| 3661 | break; |
| 3662 | default: |
| 3663 | STATUS_NATIVE_SET(status); |
| 3664 | break; |
| 3665 | } |
| 3666 | my_exit_jump(); |
| 3667 | } |
| 3668 | |
| 3669 | void |
| 3670 | Perl_my_failure_exit(pTHX) |
| 3671 | { |
| 3672 | #ifdef VMS |
| 3673 | if (vaxc$errno & 1) { |
| 3674 | if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */ |
| 3675 | STATUS_NATIVE_SET(44); |
| 3676 | } |
| 3677 | else { |
| 3678 | if (!vaxc$errno && errno) /* unlikely */ |
| 3679 | STATUS_NATIVE_SET(44); |
| 3680 | else |
| 3681 | STATUS_NATIVE_SET(vaxc$errno); |
| 3682 | } |
| 3683 | #else |
| 3684 | int exitstatus; |
| 3685 | if (errno & 255) |
| 3686 | STATUS_POSIX_SET(errno); |
| 3687 | else { |
| 3688 | exitstatus = STATUS_POSIX >> 8; |
| 3689 | if (exitstatus & 255) |
| 3690 | STATUS_POSIX_SET(exitstatus); |
| 3691 | else |
| 3692 | STATUS_POSIX_SET(255); |
| 3693 | } |
| 3694 | #endif |
| 3695 | my_exit_jump(); |
| 3696 | } |
| 3697 | |
| 3698 | STATIC void |
| 3699 | S_my_exit_jump(pTHX) |
| 3700 | { |
| 3701 | dTHR; |
| 3702 | register PERL_CONTEXT *cx; |
| 3703 | I32 gimme; |
| 3704 | SV **newsp; |
| 3705 | |
| 3706 | if (PL_e_script) { |
| 3707 | SvREFCNT_dec(PL_e_script); |
| 3708 | PL_e_script = Nullsv; |
| 3709 | } |
| 3710 | |
| 3711 | POPSTACK_TO(PL_mainstack); |
| 3712 | if (cxstack_ix >= 0) { |
| 3713 | if (cxstack_ix > 0) |
| 3714 | dounwind(0); |
| 3715 | POPBLOCK(cx,PL_curpm); |
| 3716 | LEAVE; |
| 3717 | } |
| 3718 | |
| 3719 | JMPENV_JUMP(2); |
| 3720 | } |
| 3721 | |
| 3722 | #ifdef PERL_OBJECT |
| 3723 | #include "XSUB.h" |
| 3724 | #endif |
| 3725 | |
| 3726 | static I32 |
| 3727 | read_e_script(pTHXo_ int idx, SV *buf_sv, int maxlen) |
| 3728 | { |
| 3729 | char *p, *nl; |
| 3730 | p = SvPVX(PL_e_script); |
| 3731 | nl = strchr(p, '\n'); |
| 3732 | nl = (nl) ? nl+1 : SvEND(PL_e_script); |
| 3733 | if (nl-p == 0) { |
| 3734 | filter_del(read_e_script); |
| 3735 | return 0; |
| 3736 | } |
| 3737 | sv_catpvn(buf_sv, p, nl-p); |
| 3738 | sv_chop(PL_e_script, nl); |
| 3739 | return 1; |
| 3740 | } |