| 1 | #line 2 "perl.c" |
| 2 | /* perl.c |
| 3 | * |
| 4 | * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001 |
| 5 | * 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 |
| 6 | * 2013, 2014, 2015, 2016, 2017 by Larry Wall and others |
| 7 | * |
| 8 | * You may distribute under the terms of either the GNU General Public |
| 9 | * License or the Artistic License, as specified in the README file. |
| 10 | * |
| 11 | */ |
| 12 | |
| 13 | /* |
| 14 | * A ship then new they built for him |
| 15 | * of mithril and of elven-glass |
| 16 | * --from Bilbo's song of EƤrendil |
| 17 | * |
| 18 | * [p.236 of _The Lord of the Rings_, II/i: "Many Meetings"] |
| 19 | */ |
| 20 | |
| 21 | /* This file contains the top-level functions that are used to create, use |
| 22 | * and destroy a perl interpreter, plus the functions used by XS code to |
| 23 | * call back into perl. Note that it does not contain the actual main() |
| 24 | * function of the interpreter; that can be found in perlmain.c |
| 25 | * |
| 26 | * Note that at build time this file is also linked to as perlmini.c, |
| 27 | * and perlmini.o is then built with PERL_IS_MINIPERL defined, which is |
| 28 | * then used to create the miniperl executable, rather than perl.o. |
| 29 | */ |
| 30 | |
| 31 | #if defined(PERL_IS_MINIPERL) && !defined(USE_SITECUSTOMIZE) |
| 32 | # define USE_SITECUSTOMIZE |
| 33 | #endif |
| 34 | |
| 35 | #include "EXTERN.h" |
| 36 | #define PERL_IN_PERL_C |
| 37 | #include "perl.h" |
| 38 | #include "patchlevel.h" /* for local_patches */ |
| 39 | #include "XSUB.h" |
| 40 | |
| 41 | #ifdef NETWARE |
| 42 | #include "nwutil.h" |
| 43 | #endif |
| 44 | |
| 45 | #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP |
| 46 | # ifdef I_SYSUIO |
| 47 | # include <sys/uio.h> |
| 48 | # endif |
| 49 | |
| 50 | union control_un { |
| 51 | struct cmsghdr cm; |
| 52 | char control[CMSG_SPACE(sizeof(int))]; |
| 53 | }; |
| 54 | |
| 55 | #endif |
| 56 | |
| 57 | #ifndef HZ |
| 58 | # ifdef CLK_TCK |
| 59 | # define HZ CLK_TCK |
| 60 | # else |
| 61 | # define HZ 60 |
| 62 | # endif |
| 63 | #endif |
| 64 | |
| 65 | static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen); |
| 66 | |
| 67 | #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW |
| 68 | # define validate_suid(rsfp) NOOP |
| 69 | #else |
| 70 | # define validate_suid(rsfp) S_validate_suid(aTHX_ rsfp) |
| 71 | #endif |
| 72 | |
| 73 | #define CALL_BODY_SUB(myop) \ |
| 74 | if (PL_op == (myop)) \ |
| 75 | PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); \ |
| 76 | if (PL_op) \ |
| 77 | CALLRUNOPS(aTHX); |
| 78 | |
| 79 | #define CALL_LIST_BODY(cv) \ |
| 80 | PUSHMARK(PL_stack_sp); \ |
| 81 | call_sv(MUTABLE_SV((cv)), G_EVAL|G_DISCARD|G_VOID); |
| 82 | |
| 83 | static void |
| 84 | S_init_tls_and_interp(PerlInterpreter *my_perl) |
| 85 | { |
| 86 | dVAR; |
| 87 | if (!PL_curinterp) { |
| 88 | PERL_SET_INTERP(my_perl); |
| 89 | #if defined(USE_ITHREADS) |
| 90 | INIT_THREADS; |
| 91 | ALLOC_THREAD_KEY; |
| 92 | PERL_SET_THX(my_perl); |
| 93 | OP_REFCNT_INIT; |
| 94 | OP_CHECK_MUTEX_INIT; |
| 95 | KEYWORD_PLUGIN_MUTEX_INIT; |
| 96 | HINTS_REFCNT_INIT; |
| 97 | LOCALE_INIT; |
| 98 | MUTEX_INIT(&PL_dollarzero_mutex); |
| 99 | MUTEX_INIT(&PL_my_ctx_mutex); |
| 100 | # endif |
| 101 | } |
| 102 | #if defined(USE_ITHREADS) |
| 103 | else |
| 104 | #else |
| 105 | /* This always happens for non-ithreads */ |
| 106 | #endif |
| 107 | { |
| 108 | PERL_SET_THX(my_perl); |
| 109 | } |
| 110 | } |
| 111 | |
| 112 | |
| 113 | /* these implement the PERL_SYS_INIT, PERL_SYS_INIT3, PERL_SYS_TERM macros */ |
| 114 | |
| 115 | void |
| 116 | Perl_sys_init(int* argc, char*** argv) |
| 117 | { |
| 118 | dVAR; |
| 119 | |
| 120 | PERL_ARGS_ASSERT_SYS_INIT; |
| 121 | |
| 122 | PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */ |
| 123 | PERL_UNUSED_ARG(argv); |
| 124 | PERL_SYS_INIT_BODY(argc, argv); |
| 125 | } |
| 126 | |
| 127 | void |
| 128 | Perl_sys_init3(int* argc, char*** argv, char*** env) |
| 129 | { |
| 130 | dVAR; |
| 131 | |
| 132 | PERL_ARGS_ASSERT_SYS_INIT3; |
| 133 | |
| 134 | PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */ |
| 135 | PERL_UNUSED_ARG(argv); |
| 136 | PERL_UNUSED_ARG(env); |
| 137 | PERL_SYS_INIT3_BODY(argc, argv, env); |
| 138 | } |
| 139 | |
| 140 | void |
| 141 | Perl_sys_term(void) |
| 142 | { |
| 143 | dVAR; |
| 144 | if (!PL_veto_cleanup) { |
| 145 | PERL_SYS_TERM_BODY(); |
| 146 | } |
| 147 | } |
| 148 | |
| 149 | |
| 150 | #ifdef PERL_IMPLICIT_SYS |
| 151 | PerlInterpreter * |
| 152 | perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS, |
| 153 | struct IPerlMem* ipMP, struct IPerlEnv* ipE, |
| 154 | struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO, |
| 155 | struct IPerlDir* ipD, struct IPerlSock* ipS, |
| 156 | struct IPerlProc* ipP) |
| 157 | { |
| 158 | PerlInterpreter *my_perl; |
| 159 | |
| 160 | PERL_ARGS_ASSERT_PERL_ALLOC_USING; |
| 161 | |
| 162 | /* Newx() needs interpreter, so call malloc() instead */ |
| 163 | my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter)); |
| 164 | S_init_tls_and_interp(my_perl); |
| 165 | Zero(my_perl, 1, PerlInterpreter); |
| 166 | PL_Mem = ipM; |
| 167 | PL_MemShared = ipMS; |
| 168 | PL_MemParse = ipMP; |
| 169 | PL_Env = ipE; |
| 170 | PL_StdIO = ipStd; |
| 171 | PL_LIO = ipLIO; |
| 172 | PL_Dir = ipD; |
| 173 | PL_Sock = ipS; |
| 174 | PL_Proc = ipP; |
| 175 | INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl); |
| 176 | |
| 177 | return my_perl; |
| 178 | } |
| 179 | #else |
| 180 | |
| 181 | /* |
| 182 | =head1 Embedding Functions |
| 183 | |
| 184 | =for apidoc perl_alloc |
| 185 | |
| 186 | Allocates a new Perl interpreter. See L<perlembed>. |
| 187 | |
| 188 | =cut |
| 189 | */ |
| 190 | |
| 191 | PerlInterpreter * |
| 192 | perl_alloc(void) |
| 193 | { |
| 194 | PerlInterpreter *my_perl; |
| 195 | |
| 196 | /* Newx() needs interpreter, so call malloc() instead */ |
| 197 | my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter)); |
| 198 | |
| 199 | S_init_tls_and_interp(my_perl); |
| 200 | #ifndef PERL_TRACK_MEMPOOL |
| 201 | return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter); |
| 202 | #else |
| 203 | Zero(my_perl, 1, PerlInterpreter); |
| 204 | INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl); |
| 205 | return my_perl; |
| 206 | #endif |
| 207 | } |
| 208 | #endif /* PERL_IMPLICIT_SYS */ |
| 209 | |
| 210 | /* |
| 211 | =for apidoc perl_construct |
| 212 | |
| 213 | Initializes a new Perl interpreter. See L<perlembed>. |
| 214 | |
| 215 | =cut |
| 216 | */ |
| 217 | |
| 218 | static void |
| 219 | S_fixup_platform_bugs(void) |
| 220 | { |
| 221 | #if defined(__GLIBC__) && IVSIZE == 8 \ |
| 222 | && ( __GLIBC__ < 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ < 8)) |
| 223 | { |
| 224 | IV l = 3; |
| 225 | IV r = -10; |
| 226 | /* Cannot do this check with inlined IV constants since |
| 227 | * that seems to work correctly even with the buggy glibc. */ |
| 228 | if (l % r == -3) { |
| 229 | dTHX; |
| 230 | /* Yikes, we have the bug. |
| 231 | * Patch in the workaround version. */ |
| 232 | PL_ppaddr[OP_I_MODULO] = &Perl_pp_i_modulo_glibc_bugfix; |
| 233 | } |
| 234 | } |
| 235 | #endif |
| 236 | } |
| 237 | |
| 238 | void |
| 239 | perl_construct(pTHXx) |
| 240 | { |
| 241 | dVAR; |
| 242 | |
| 243 | PERL_ARGS_ASSERT_PERL_CONSTRUCT; |
| 244 | |
| 245 | #ifdef MULTIPLICITY |
| 246 | init_interp(); |
| 247 | PL_perl_destruct_level = 1; |
| 248 | #else |
| 249 | PERL_UNUSED_ARG(my_perl); |
| 250 | if (PL_perl_destruct_level > 0) |
| 251 | init_interp(); |
| 252 | #endif |
| 253 | PL_curcop = &PL_compiling; /* needed by ckWARN, right away */ |
| 254 | |
| 255 | #ifdef PERL_TRACE_OPS |
| 256 | Zero(PL_op_exec_cnt, OP_max+2, UV); |
| 257 | #endif |
| 258 | |
| 259 | init_constants(); |
| 260 | |
| 261 | SvREADONLY_on(&PL_sv_placeholder); |
| 262 | SvREFCNT(&PL_sv_placeholder) = SvREFCNT_IMMORTAL; |
| 263 | |
| 264 | PL_sighandlerp = (Sighandler_t) Perl_sighandler; |
| 265 | #ifdef PERL_USES_PL_PIDSTATUS |
| 266 | PL_pidstatus = newHV(); |
| 267 | #endif |
| 268 | |
| 269 | PL_rs = newSVpvs("\n"); |
| 270 | |
| 271 | init_stacks(); |
| 272 | |
| 273 | /* The PERL_INTERNAL_RAND_SEED set-up must be after init_stacks because it calls |
| 274 | * things that may put SVs on the stack. |
| 275 | */ |
| 276 | |
| 277 | #ifdef NO_PERL_INTERNAL_RAND_SEED |
| 278 | Perl_drand48_init_r(&PL_internal_random_state, seed()); |
| 279 | #else |
| 280 | { |
| 281 | UV seed; |
| 282 | const char *env_pv; |
| 283 | if (PerlProc_getuid() != PerlProc_geteuid() || |
| 284 | PerlProc_getgid() != PerlProc_getegid() || |
| 285 | !(env_pv = PerlEnv_getenv("PERL_INTERNAL_RAND_SEED")) || |
| 286 | grok_number(env_pv, strlen(env_pv), &seed) != IS_NUMBER_IN_UV) { |
| 287 | seed = seed(); |
| 288 | } |
| 289 | Perl_drand48_init_r(&PL_internal_random_state, (U32)seed); |
| 290 | } |
| 291 | #endif |
| 292 | |
| 293 | init_ids(); |
| 294 | |
| 295 | S_fixup_platform_bugs(); |
| 296 | |
| 297 | JMPENV_BOOTSTRAP; |
| 298 | STATUS_ALL_SUCCESS; |
| 299 | |
| 300 | init_i18nl10n(1); |
| 301 | |
| 302 | #if defined(LOCAL_PATCH_COUNT) |
| 303 | PL_localpatches = local_patches; /* For possible -v */ |
| 304 | #endif |
| 305 | |
| 306 | #if defined(LIBM_LIB_VERSION) |
| 307 | /* |
| 308 | * Some BSDs and Cygwin default to POSIX math instead of IEEE. |
| 309 | * This switches them over to IEEE. |
| 310 | */ |
| 311 | _LIB_VERSION = _IEEE_; |
| 312 | #endif |
| 313 | |
| 314 | #ifdef HAVE_INTERP_INTERN |
| 315 | sys_intern_init(); |
| 316 | #endif |
| 317 | |
| 318 | PerlIO_init(aTHX); /* Hook to IO system */ |
| 319 | |
| 320 | PL_fdpid = newAV(); /* for remembering popen pids by fd */ |
| 321 | PL_modglobal = newHV(); /* pointers to per-interpreter module globals */ |
| 322 | PL_errors = newSVpvs(""); |
| 323 | SvPVCLEAR(PERL_DEBUG_PAD(0)); /* For regex debugging. */ |
| 324 | SvPVCLEAR(PERL_DEBUG_PAD(1)); /* ext/re needs these */ |
| 325 | SvPVCLEAR(PERL_DEBUG_PAD(2)); /* even without DEBUGGING. */ |
| 326 | #ifdef USE_ITHREADS |
| 327 | /* First entry is a list of empty elements. It needs to be initialised |
| 328 | else all hell breaks loose in S_find_uninit_var(). */ |
| 329 | Perl_av_create_and_push(aTHX_ &PL_regex_padav, newSVpvs("")); |
| 330 | PL_regex_pad = AvARRAY(PL_regex_padav); |
| 331 | Newxz(PL_stashpad, PL_stashpadmax, HV *); |
| 332 | #endif |
| 333 | #ifdef USE_REENTRANT_API |
| 334 | Perl_reentrant_init(aTHX); |
| 335 | #endif |
| 336 | if (PL_hash_seed_set == FALSE) { |
| 337 | /* Initialize the hash seed and state at startup. This must be |
| 338 | * done very early, before ANY hashes are constructed, and once |
| 339 | * setup is fixed for the lifetime of the process. |
| 340 | * |
| 341 | * If you decide to disable the seeding process you should choose |
| 342 | * a suitable seed yourself and define PERL_HASH_SEED to a well chosen |
| 343 | * string. See hv_func.h for details. |
| 344 | */ |
| 345 | #if defined(USE_HASH_SEED) |
| 346 | /* get the hash seed from the environment or from an RNG */ |
| 347 | Perl_get_hash_seed(aTHX_ PL_hash_seed); |
| 348 | #else |
| 349 | /* they want a hard coded seed, check that it is long enough */ |
| 350 | assert( strlen(PERL_HASH_SEED) >= PERL_HASH_SEED_BYTES ); |
| 351 | #endif |
| 352 | |
| 353 | /* now we use the chosen seed to initialize the state - |
| 354 | * in some configurations this may be a relatively speaking |
| 355 | * expensive operation, but we only have to do it once at startup */ |
| 356 | PERL_HASH_SEED_STATE(PERL_HASH_SEED,PL_hash_state); |
| 357 | |
| 358 | #ifdef PERL_USE_SINGLE_CHAR_HASH_CACHE |
| 359 | /* we can build a special cache for 0/1 byte keys, if people choose |
| 360 | * I suspect most of the time it is not worth it */ |
| 361 | { |
| 362 | char str[2]="\0"; |
| 363 | int i; |
| 364 | for (i=0;i<256;i++) { |
| 365 | str[0]= i; |
| 366 | PERL_HASH_WITH_STATE(PL_hash_state,PL_hash_chars[i],str,1); |
| 367 | } |
| 368 | PERL_HASH_WITH_STATE(PL_hash_state,PL_hash_chars[256],str,0); |
| 369 | } |
| 370 | #endif |
| 371 | /* at this point we have initialezed the hash function, and we can start |
| 372 | * constructing hashes */ |
| 373 | PL_hash_seed_set= TRUE; |
| 374 | } |
| 375 | |
| 376 | /* Allow PL_strtab to be pre-initialized before calling perl_construct. |
| 377 | * can use a custom optimized PL_strtab hash before calling perl_construct */ |
| 378 | if (!PL_strtab) { |
| 379 | /* Note that strtab is a rather special HV. Assumptions are made |
| 380 | about not iterating on it, and not adding tie magic to it. |
| 381 | It is properly deallocated in perl_destruct() */ |
| 382 | PL_strtab = newHV(); |
| 383 | |
| 384 | /* SHAREKEYS tells us that the hash has its keys shared with PL_strtab, |
| 385 | * which is not the case with PL_strtab itself */ |
| 386 | HvSHAREKEYS_off(PL_strtab); /* mandatory */ |
| 387 | hv_ksplit(PL_strtab, 1 << 11); |
| 388 | } |
| 389 | |
| 390 | Zero(PL_sv_consts, SV_CONSTS_COUNT, SV*); |
| 391 | |
| 392 | #ifndef PERL_MICRO |
| 393 | # ifdef USE_ENVIRON_ARRAY |
| 394 | PL_origenviron = environ; |
| 395 | # endif |
| 396 | #endif |
| 397 | |
| 398 | /* Use sysconf(_SC_CLK_TCK) if available, if not |
| 399 | * available or if the sysconf() fails, use the HZ. |
| 400 | * The HZ if not originally defined has been by now |
| 401 | * been defined as CLK_TCK, if available. */ |
| 402 | #if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK) |
| 403 | PL_clocktick = sysconf(_SC_CLK_TCK); |
| 404 | if (PL_clocktick <= 0) |
| 405 | #endif |
| 406 | PL_clocktick = HZ; |
| 407 | |
| 408 | PL_stashcache = newHV(); |
| 409 | |
| 410 | PL_patchlevel = newSVpvs("v" PERL_VERSION_STRING); |
| 411 | |
| 412 | #ifdef HAS_MMAP |
| 413 | if (!PL_mmap_page_size) { |
| 414 | #if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE)) |
| 415 | { |
| 416 | SETERRNO(0, SS_NORMAL); |
| 417 | # ifdef _SC_PAGESIZE |
| 418 | PL_mmap_page_size = sysconf(_SC_PAGESIZE); |
| 419 | # else |
| 420 | PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE); |
| 421 | # endif |
| 422 | if ((long) PL_mmap_page_size < 0) { |
| 423 | Perl_croak(aTHX_ "panic: sysconf: %s", |
| 424 | errno ? Strerror(errno) : "pagesize unknown"); |
| 425 | } |
| 426 | } |
| 427 | #elif defined(HAS_GETPAGESIZE) |
| 428 | PL_mmap_page_size = getpagesize(); |
| 429 | #elif defined(I_SYS_PARAM) && defined(PAGESIZE) |
| 430 | PL_mmap_page_size = PAGESIZE; /* compiletime, bad */ |
| 431 | #endif |
| 432 | if (PL_mmap_page_size <= 0) |
| 433 | Perl_croak(aTHX_ "panic: bad pagesize %" IVdf, |
| 434 | (IV) PL_mmap_page_size); |
| 435 | } |
| 436 | #endif /* HAS_MMAP */ |
| 437 | |
| 438 | #if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE) |
| 439 | PL_timesbase.tms_utime = 0; |
| 440 | PL_timesbase.tms_stime = 0; |
| 441 | PL_timesbase.tms_cutime = 0; |
| 442 | PL_timesbase.tms_cstime = 0; |
| 443 | #endif |
| 444 | |
| 445 | PL_osname = Perl_savepvn(aTHX_ STR_WITH_LEN(OSNAME)); |
| 446 | |
| 447 | PL_registered_mros = newHV(); |
| 448 | /* Start with 1 bucket, for DFS. It's unlikely we'll need more. */ |
| 449 | HvMAX(PL_registered_mros) = 0; |
| 450 | |
| 451 | PL_XPosix_ptrs[_CC_ASCII] = _new_invlist_C_array(ASCII_invlist); |
| 452 | PL_XPosix_ptrs[_CC_ALPHANUMERIC] = _new_invlist_C_array(XPosixAlnum_invlist); |
| 453 | PL_XPosix_ptrs[_CC_ALPHA] = _new_invlist_C_array(XPosixAlpha_invlist); |
| 454 | PL_XPosix_ptrs[_CC_BLANK] = _new_invlist_C_array(XPosixBlank_invlist); |
| 455 | PL_XPosix_ptrs[_CC_CASED] = _new_invlist_C_array(Cased_invlist); |
| 456 | PL_XPosix_ptrs[_CC_CNTRL] = _new_invlist_C_array(XPosixCntrl_invlist); |
| 457 | PL_XPosix_ptrs[_CC_DIGIT] = _new_invlist_C_array(XPosixDigit_invlist); |
| 458 | PL_XPosix_ptrs[_CC_GRAPH] = _new_invlist_C_array(XPosixGraph_invlist); |
| 459 | PL_XPosix_ptrs[_CC_LOWER] = _new_invlist_C_array(XPosixLower_invlist); |
| 460 | PL_XPosix_ptrs[_CC_PRINT] = _new_invlist_C_array(XPosixPrint_invlist); |
| 461 | PL_XPosix_ptrs[_CC_PUNCT] = _new_invlist_C_array(XPosixPunct_invlist); |
| 462 | PL_XPosix_ptrs[_CC_SPACE] = _new_invlist_C_array(XPerlSpace_invlist); |
| 463 | PL_XPosix_ptrs[_CC_UPPER] = _new_invlist_C_array(XPosixUpper_invlist); |
| 464 | PL_XPosix_ptrs[_CC_VERTSPACE] = _new_invlist_C_array(VertSpace_invlist); |
| 465 | PL_XPosix_ptrs[_CC_WORDCHAR] = _new_invlist_C_array(XPosixWord_invlist); |
| 466 | PL_XPosix_ptrs[_CC_XDIGIT] = _new_invlist_C_array(XPosixXDigit_invlist); |
| 467 | PL_GCB_invlist = _new_invlist_C_array(_Perl_GCB_invlist); |
| 468 | PL_SB_invlist = _new_invlist_C_array(_Perl_SB_invlist); |
| 469 | PL_WB_invlist = _new_invlist_C_array(_Perl_WB_invlist); |
| 470 | PL_LB_invlist = _new_invlist_C_array(_Perl_LB_invlist); |
| 471 | PL_Assigned_invlist = _new_invlist_C_array(Assigned_invlist); |
| 472 | #ifdef HAS_POSIX_2008_LOCALE |
| 473 | PL_C_locale_obj = newlocale(LC_ALL_MASK, "C", NULL); |
| 474 | #endif |
| 475 | |
| 476 | ENTER; |
| 477 | } |
| 478 | |
| 479 | /* |
| 480 | =for apidoc nothreadhook |
| 481 | |
| 482 | Stub that provides thread hook for perl_destruct when there are |
| 483 | no threads. |
| 484 | |
| 485 | =cut |
| 486 | */ |
| 487 | |
| 488 | int |
| 489 | Perl_nothreadhook(pTHX) |
| 490 | { |
| 491 | PERL_UNUSED_CONTEXT; |
| 492 | return 0; |
| 493 | } |
| 494 | |
| 495 | #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP |
| 496 | void |
| 497 | Perl_dump_sv_child(pTHX_ SV *sv) |
| 498 | { |
| 499 | ssize_t got; |
| 500 | const int sock = PL_dumper_fd; |
| 501 | const int debug_fd = PerlIO_fileno(Perl_debug_log); |
| 502 | union control_un control; |
| 503 | struct msghdr msg; |
| 504 | struct iovec vec[2]; |
| 505 | struct cmsghdr *cmptr; |
| 506 | int returned_errno; |
| 507 | unsigned char buffer[256]; |
| 508 | |
| 509 | PERL_ARGS_ASSERT_DUMP_SV_CHILD; |
| 510 | |
| 511 | if(sock == -1 || debug_fd == -1) |
| 512 | return; |
| 513 | |
| 514 | PerlIO_flush(Perl_debug_log); |
| 515 | |
| 516 | /* All these shenanigans are to pass a file descriptor over to our child for |
| 517 | it to dump out to. We can't let it hold open the file descriptor when it |
| 518 | forks, as the file descriptor it will dump to can turn out to be one end |
| 519 | of pipe that some other process will wait on for EOF. (So as it would |
| 520 | be open, the wait would be forever.) */ |
| 521 | |
| 522 | msg.msg_control = control.control; |
| 523 | msg.msg_controllen = sizeof(control.control); |
| 524 | /* We're a connected socket so we don't need a destination */ |
| 525 | msg.msg_name = NULL; |
| 526 | msg.msg_namelen = 0; |
| 527 | msg.msg_iov = vec; |
| 528 | msg.msg_iovlen = 1; |
| 529 | |
| 530 | cmptr = CMSG_FIRSTHDR(&msg); |
| 531 | cmptr->cmsg_len = CMSG_LEN(sizeof(int)); |
| 532 | cmptr->cmsg_level = SOL_SOCKET; |
| 533 | cmptr->cmsg_type = SCM_RIGHTS; |
| 534 | *((int *)CMSG_DATA(cmptr)) = 1; |
| 535 | |
| 536 | vec[0].iov_base = (void*)&sv; |
| 537 | vec[0].iov_len = sizeof(sv); |
| 538 | got = sendmsg(sock, &msg, 0); |
| 539 | |
| 540 | if(got < 0) { |
| 541 | perror("Debug leaking scalars parent sendmsg failed"); |
| 542 | abort(); |
| 543 | } |
| 544 | if(got < sizeof(sv)) { |
| 545 | perror("Debug leaking scalars parent short sendmsg"); |
| 546 | abort(); |
| 547 | } |
| 548 | |
| 549 | /* Return protocol is |
| 550 | int: errno value |
| 551 | unsigned char: length of location string (0 for empty) |
| 552 | unsigned char*: string (not terminated) |
| 553 | */ |
| 554 | vec[0].iov_base = (void*)&returned_errno; |
| 555 | vec[0].iov_len = sizeof(returned_errno); |
| 556 | vec[1].iov_base = buffer; |
| 557 | vec[1].iov_len = 1; |
| 558 | |
| 559 | got = readv(sock, vec, 2); |
| 560 | |
| 561 | if(got < 0) { |
| 562 | perror("Debug leaking scalars parent read failed"); |
| 563 | PerlIO_flush(PerlIO_stderr()); |
| 564 | abort(); |
| 565 | } |
| 566 | if(got < sizeof(returned_errno) + 1) { |
| 567 | perror("Debug leaking scalars parent short read"); |
| 568 | PerlIO_flush(PerlIO_stderr()); |
| 569 | abort(); |
| 570 | } |
| 571 | |
| 572 | if (*buffer) { |
| 573 | got = read(sock, buffer + 1, *buffer); |
| 574 | if(got < 0) { |
| 575 | perror("Debug leaking scalars parent read 2 failed"); |
| 576 | PerlIO_flush(PerlIO_stderr()); |
| 577 | abort(); |
| 578 | } |
| 579 | |
| 580 | if(got < *buffer) { |
| 581 | perror("Debug leaking scalars parent short read 2"); |
| 582 | PerlIO_flush(PerlIO_stderr()); |
| 583 | abort(); |
| 584 | } |
| 585 | } |
| 586 | |
| 587 | if (returned_errno || *buffer) { |
| 588 | Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno" |
| 589 | " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1, |
| 590 | returned_errno, Strerror(returned_errno)); |
| 591 | } |
| 592 | } |
| 593 | #endif |
| 594 | |
| 595 | /* |
| 596 | =for apidoc Am|int|perl_destruct|PerlInterpreter *my_perl |
| 597 | |
| 598 | Shuts down a Perl interpreter. See L<perlembed> for a tutorial. |
| 599 | |
| 600 | C<my_perl> points to the Perl interpreter. It must have been previously |
| 601 | created through the use of L</perl_alloc> and L</perl_construct>. It may |
| 602 | have been initialised through L</perl_parse>, and may have been used |
| 603 | through L</perl_run> and other means. This function should be called for |
| 604 | any Perl interpreter that has been constructed with L</perl_construct>, |
| 605 | even if subsequent operations on it failed, for example if L</perl_parse> |
| 606 | returned a non-zero value. |
| 607 | |
| 608 | If the interpreter's C<PL_exit_flags> word has the |
| 609 | C<PERL_EXIT_DESTRUCT_END> flag set, then this function will execute code |
| 610 | in C<END> blocks before performing the rest of destruction. If it is |
| 611 | desired to make any use of the interpreter between L</perl_parse> and |
| 612 | L</perl_destruct> other than just calling L</perl_run>, then this flag |
| 613 | should be set early on. This matters if L</perl_run> will not be called, |
| 614 | or if anything else will be done in addition to calling L</perl_run>. |
| 615 | |
| 616 | Returns a value be a suitable value to pass to the C library function |
| 617 | C<exit> (or to return from C<main>), to serve as an exit code indicating |
| 618 | the nature of the way the interpreter terminated. This takes into account |
| 619 | any failure of L</perl_parse> and any early exit from L</perl_run>. |
| 620 | The exit code is of the type required by the host operating system, |
| 621 | so because of differing exit code conventions it is not portable to |
| 622 | interpret specific numeric values as having specific meanings. |
| 623 | |
| 624 | =cut |
| 625 | */ |
| 626 | |
| 627 | int |
| 628 | perl_destruct(pTHXx) |
| 629 | { |
| 630 | dVAR; |
| 631 | volatile signed char destruct_level; /* see possible values in intrpvar.h */ |
| 632 | HV *hv; |
| 633 | #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP |
| 634 | pid_t child; |
| 635 | #endif |
| 636 | int i; |
| 637 | |
| 638 | PERL_ARGS_ASSERT_PERL_DESTRUCT; |
| 639 | #ifndef MULTIPLICITY |
| 640 | PERL_UNUSED_ARG(my_perl); |
| 641 | #endif |
| 642 | |
| 643 | assert(PL_scopestack_ix == 1); |
| 644 | |
| 645 | /* wait for all pseudo-forked children to finish */ |
| 646 | PERL_WAIT_FOR_CHILDREN; |
| 647 | |
| 648 | destruct_level = PL_perl_destruct_level; |
| 649 | #if defined(DEBUGGING) || defined(PERL_TRACK_MEMPOOL) |
| 650 | { |
| 651 | const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL"); |
| 652 | if (s) { |
| 653 | int i; |
| 654 | if (strEQ(s, "-1")) { /* Special case: modperl folklore. */ |
| 655 | i = -1; |
| 656 | } else { |
| 657 | UV uv; |
| 658 | if (grok_atoUV(s, &uv, NULL) && uv <= INT_MAX) |
| 659 | i = (int)uv; |
| 660 | else |
| 661 | i = 0; |
| 662 | } |
| 663 | #ifdef DEBUGGING |
| 664 | if (destruct_level < i) destruct_level = i; |
| 665 | #endif |
| 666 | #ifdef PERL_TRACK_MEMPOOL |
| 667 | /* RT #114496, for perl_free */ |
| 668 | PL_perl_destruct_level = i; |
| 669 | #endif |
| 670 | } |
| 671 | } |
| 672 | #endif |
| 673 | |
| 674 | if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) { |
| 675 | dJMPENV; |
| 676 | int x = 0; |
| 677 | |
| 678 | JMPENV_PUSH(x); |
| 679 | PERL_UNUSED_VAR(x); |
| 680 | if (PL_endav && !PL_minus_c) { |
| 681 | PERL_SET_PHASE(PERL_PHASE_END); |
| 682 | call_list(PL_scopestack_ix, PL_endav); |
| 683 | } |
| 684 | JMPENV_POP; |
| 685 | } |
| 686 | LEAVE; |
| 687 | FREETMPS; |
| 688 | assert(PL_scopestack_ix == 0); |
| 689 | |
| 690 | /* Need to flush since END blocks can produce output */ |
| 691 | /* flush stdout separately, since we can identify it */ |
| 692 | #ifdef USE_PERLIO |
| 693 | { |
| 694 | PerlIO *stdo = PerlIO_stdout(); |
| 695 | if (*stdo && PerlIO_flush(stdo)) { |
| 696 | PerlIO_restore_errno(stdo); |
| 697 | if (errno) |
| 698 | PerlIO_printf(PerlIO_stderr(), "Unable to flush stdout: %s", |
| 699 | Strerror(errno)); |
| 700 | if (!STATUS_UNIX) |
| 701 | STATUS_ALL_FAILURE; |
| 702 | } |
| 703 | } |
| 704 | #endif |
| 705 | my_fflush_all(); |
| 706 | |
| 707 | #ifdef PERL_TRACE_OPS |
| 708 | /* dump OP-counts if $ENV{PERL_TRACE_OPS} > 0 */ |
| 709 | { |
| 710 | const char * const ptoenv = PerlEnv_getenv("PERL_TRACE_OPS"); |
| 711 | UV uv; |
| 712 | |
| 713 | if (!ptoenv || !Perl_grok_atoUV(ptoenv, &uv, NULL) |
| 714 | || !(uv > 0)) |
| 715 | goto no_trace_out; |
| 716 | } |
| 717 | PerlIO_printf(Perl_debug_log, "Trace of all OPs executed:\n"); |
| 718 | for (i = 0; i <= OP_max; ++i) { |
| 719 | if (PL_op_exec_cnt[i]) |
| 720 | PerlIO_printf(Perl_debug_log, " %s: %" UVuf "\n", PL_op_name[i], PL_op_exec_cnt[i]); |
| 721 | } |
| 722 | /* Utility slot for easily doing little tracing experiments in the runloop: */ |
| 723 | if (PL_op_exec_cnt[OP_max+1] != 0) |
| 724 | PerlIO_printf(Perl_debug_log, " SPECIAL: %" UVuf "\n", PL_op_exec_cnt[OP_max+1]); |
| 725 | PerlIO_printf(Perl_debug_log, "\n"); |
| 726 | no_trace_out: |
| 727 | #endif |
| 728 | |
| 729 | |
| 730 | if (PL_threadhook(aTHX)) { |
| 731 | /* Threads hook has vetoed further cleanup */ |
| 732 | PL_veto_cleanup = TRUE; |
| 733 | return STATUS_EXIT; |
| 734 | } |
| 735 | |
| 736 | #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP |
| 737 | if (destruct_level != 0) { |
| 738 | /* Fork here to create a child. Our child's job is to preserve the |
| 739 | state of scalars prior to destruction, so that we can instruct it |
| 740 | to dump any scalars that we later find have leaked. |
| 741 | There's no subtlety in this code - it assumes POSIX, and it doesn't |
| 742 | fail gracefully */ |
| 743 | int fd[2]; |
| 744 | |
| 745 | if(PerlSock_socketpair_cloexec(AF_UNIX, SOCK_STREAM, 0, fd)) { |
| 746 | perror("Debug leaking scalars socketpair failed"); |
| 747 | abort(); |
| 748 | } |
| 749 | |
| 750 | child = fork(); |
| 751 | if(child == -1) { |
| 752 | perror("Debug leaking scalars fork failed"); |
| 753 | abort(); |
| 754 | } |
| 755 | if (!child) { |
| 756 | /* We are the child */ |
| 757 | const int sock = fd[1]; |
| 758 | const int debug_fd = PerlIO_fileno(Perl_debug_log); |
| 759 | int f; |
| 760 | const char *where; |
| 761 | /* Our success message is an integer 0, and a char 0 */ |
| 762 | static const char success[sizeof(int) + 1] = {0}; |
| 763 | |
| 764 | close(fd[0]); |
| 765 | |
| 766 | /* We need to close all other file descriptors otherwise we end up |
| 767 | with interesting hangs, where the parent closes its end of a |
| 768 | pipe, and sits waiting for (another) child to terminate. Only |
| 769 | that child never terminates, because it never gets EOF, because |
| 770 | we also have the far end of the pipe open. We even need to |
| 771 | close the debugging fd, because sometimes it happens to be one |
| 772 | end of a pipe, and a process is waiting on the other end for |
| 773 | EOF. Normally it would be closed at some point earlier in |
| 774 | destruction, but if we happen to cause the pipe to remain open, |
| 775 | EOF never occurs, and we get an infinite hang. Hence all the |
| 776 | games to pass in a file descriptor if it's actually needed. */ |
| 777 | |
| 778 | f = sysconf(_SC_OPEN_MAX); |
| 779 | if(f < 0) { |
| 780 | where = "sysconf failed"; |
| 781 | goto abort; |
| 782 | } |
| 783 | while (f--) { |
| 784 | if (f == sock) |
| 785 | continue; |
| 786 | close(f); |
| 787 | } |
| 788 | |
| 789 | while (1) { |
| 790 | SV *target; |
| 791 | union control_un control; |
| 792 | struct msghdr msg; |
| 793 | struct iovec vec[1]; |
| 794 | struct cmsghdr *cmptr; |
| 795 | ssize_t got; |
| 796 | int got_fd; |
| 797 | |
| 798 | msg.msg_control = control.control; |
| 799 | msg.msg_controllen = sizeof(control.control); |
| 800 | /* We're a connected socket so we don't need a source */ |
| 801 | msg.msg_name = NULL; |
| 802 | msg.msg_namelen = 0; |
| 803 | msg.msg_iov = vec; |
| 804 | msg.msg_iovlen = C_ARRAY_LENGTH(vec); |
| 805 | |
| 806 | vec[0].iov_base = (void*)⌖ |
| 807 | vec[0].iov_len = sizeof(target); |
| 808 | |
| 809 | got = recvmsg(sock, &msg, 0); |
| 810 | |
| 811 | if(got == 0) |
| 812 | break; |
| 813 | if(got < 0) { |
| 814 | where = "recv failed"; |
| 815 | goto abort; |
| 816 | } |
| 817 | if(got < sizeof(target)) { |
| 818 | where = "short recv"; |
| 819 | goto abort; |
| 820 | } |
| 821 | |
| 822 | if(!(cmptr = CMSG_FIRSTHDR(&msg))) { |
| 823 | where = "no cmsg"; |
| 824 | goto abort; |
| 825 | } |
| 826 | if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) { |
| 827 | where = "wrong cmsg_len"; |
| 828 | goto abort; |
| 829 | } |
| 830 | if(cmptr->cmsg_level != SOL_SOCKET) { |
| 831 | where = "wrong cmsg_level"; |
| 832 | goto abort; |
| 833 | } |
| 834 | if(cmptr->cmsg_type != SCM_RIGHTS) { |
| 835 | where = "wrong cmsg_type"; |
| 836 | goto abort; |
| 837 | } |
| 838 | |
| 839 | got_fd = *(int*)CMSG_DATA(cmptr); |
| 840 | /* For our last little bit of trickery, put the file descriptor |
| 841 | back into Perl_debug_log, as if we never actually closed it |
| 842 | */ |
| 843 | if(got_fd != debug_fd) { |
| 844 | if (PerlLIO_dup2_cloexec(got_fd, debug_fd) == -1) { |
| 845 | where = "dup2"; |
| 846 | goto abort; |
| 847 | } |
| 848 | } |
| 849 | sv_dump(target); |
| 850 | |
| 851 | PerlIO_flush(Perl_debug_log); |
| 852 | |
| 853 | got = write(sock, &success, sizeof(success)); |
| 854 | |
| 855 | if(got < 0) { |
| 856 | where = "write failed"; |
| 857 | goto abort; |
| 858 | } |
| 859 | if(got < sizeof(success)) { |
| 860 | where = "short write"; |
| 861 | goto abort; |
| 862 | } |
| 863 | } |
| 864 | _exit(0); |
| 865 | abort: |
| 866 | { |
| 867 | int send_errno = errno; |
| 868 | unsigned char length = (unsigned char) strlen(where); |
| 869 | struct iovec failure[3] = { |
| 870 | {(void*)&send_errno, sizeof(send_errno)}, |
| 871 | {&length, 1}, |
| 872 | {(void*)where, length} |
| 873 | }; |
| 874 | int got = writev(sock, failure, 3); |
| 875 | /* Bad news travels fast. Faster than data. We'll get a SIGPIPE |
| 876 | in the parent if we try to read from the socketpair after the |
| 877 | child has exited, even if there was data to read. |
| 878 | So sleep a bit to give the parent a fighting chance of |
| 879 | reading the data. */ |
| 880 | sleep(2); |
| 881 | _exit((got == -1) ? errno : 0); |
| 882 | } |
| 883 | /* End of child. */ |
| 884 | } |
| 885 | PL_dumper_fd = fd[0]; |
| 886 | close(fd[1]); |
| 887 | } |
| 888 | #endif |
| 889 | |
| 890 | /* We must account for everything. */ |
| 891 | |
| 892 | /* Destroy the main CV and syntax tree */ |
| 893 | /* Set PL_curcop now, because destroying ops can cause new SVs |
| 894 | to be generated in Perl_pad_swipe, and when running with |
| 895 | -DDEBUG_LEAKING_SCALARS they expect PL_curcop to point to a valid |
| 896 | op from which the filename structure member is copied. */ |
| 897 | PL_curcop = &PL_compiling; |
| 898 | if (PL_main_root) { |
| 899 | /* ensure comppad/curpad to refer to main's pad */ |
| 900 | if (CvPADLIST(PL_main_cv)) { |
| 901 | PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1); |
| 902 | PL_comppad_name = PadlistNAMES(CvPADLIST(PL_main_cv)); |
| 903 | } |
| 904 | op_free(PL_main_root); |
| 905 | PL_main_root = NULL; |
| 906 | } |
| 907 | PL_main_start = NULL; |
| 908 | /* note that PL_main_cv isn't usually actually freed at this point, |
| 909 | * due to the CvOUTSIDE refs from subs compiled within it. It will |
| 910 | * get freed once all the subs are freed in sv_clean_all(), for |
| 911 | * destruct_level > 0 */ |
| 912 | SvREFCNT_dec(PL_main_cv); |
| 913 | PL_main_cv = NULL; |
| 914 | PERL_SET_PHASE(PERL_PHASE_DESTRUCT); |
| 915 | |
| 916 | /* Tell PerlIO we are about to tear things apart in case |
| 917 | we have layers which are using resources that should |
| 918 | be cleaned up now. |
| 919 | */ |
| 920 | |
| 921 | PerlIO_destruct(aTHX); |
| 922 | |
| 923 | /* |
| 924 | * Try to destruct global references. We do this first so that the |
| 925 | * destructors and destructees still exist. Some sv's might remain. |
| 926 | * Non-referenced objects are on their own. |
| 927 | */ |
| 928 | sv_clean_objs(); |
| 929 | |
| 930 | /* unhook hooks which will soon be, or use, destroyed data */ |
| 931 | SvREFCNT_dec(PL_warnhook); |
| 932 | PL_warnhook = NULL; |
| 933 | SvREFCNT_dec(PL_diehook); |
| 934 | PL_diehook = NULL; |
| 935 | |
| 936 | /* call exit list functions */ |
| 937 | while (PL_exitlistlen-- > 0) |
| 938 | PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr); |
| 939 | |
| 940 | Safefree(PL_exitlist); |
| 941 | |
| 942 | PL_exitlist = NULL; |
| 943 | PL_exitlistlen = 0; |
| 944 | |
| 945 | SvREFCNT_dec(PL_registered_mros); |
| 946 | |
| 947 | /* jettison our possibly duplicated environment */ |
| 948 | /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied |
| 949 | * so we certainly shouldn't free it here |
| 950 | */ |
| 951 | #ifndef PERL_MICRO |
| 952 | #if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV) |
| 953 | if (environ != PL_origenviron && !PL_use_safe_putenv |
| 954 | #ifdef USE_ITHREADS |
| 955 | /* only main thread can free environ[0] contents */ |
| 956 | && PL_curinterp == aTHX |
| 957 | #endif |
| 958 | ) |
| 959 | { |
| 960 | I32 i; |
| 961 | |
| 962 | for (i = 0; environ[i]; i++) |
| 963 | safesysfree(environ[i]); |
| 964 | |
| 965 | /* Must use safesysfree() when working with environ. */ |
| 966 | safesysfree(environ); |
| 967 | |
| 968 | environ = PL_origenviron; |
| 969 | } |
| 970 | #endif |
| 971 | #endif /* !PERL_MICRO */ |
| 972 | |
| 973 | if (destruct_level == 0) { |
| 974 | |
| 975 | DEBUG_P(debprofdump()); |
| 976 | |
| 977 | #if defined(PERLIO_LAYERS) |
| 978 | /* No more IO - including error messages ! */ |
| 979 | PerlIO_cleanup(aTHX); |
| 980 | #endif |
| 981 | |
| 982 | CopFILE_free(&PL_compiling); |
| 983 | |
| 984 | /* The exit() function will do everything that needs doing. */ |
| 985 | return STATUS_EXIT; |
| 986 | } |
| 987 | |
| 988 | /* Below, do clean up for when PERL_DESTRUCT_LEVEL is not 0 */ |
| 989 | |
| 990 | #ifdef USE_ITHREADS |
| 991 | /* the syntax tree is shared between clones |
| 992 | * so op_free(PL_main_root) only ReREFCNT_dec's |
| 993 | * REGEXPs in the parent interpreter |
| 994 | * we need to manually ReREFCNT_dec for the clones |
| 995 | */ |
| 996 | { |
| 997 | I32 i = AvFILLp(PL_regex_padav); |
| 998 | SV **ary = AvARRAY(PL_regex_padav); |
| 999 | |
| 1000 | for (; i; i--) { |
| 1001 | SvREFCNT_dec(ary[i]); |
| 1002 | ary[i] = &PL_sv_undef; |
| 1003 | } |
| 1004 | } |
| 1005 | #endif |
| 1006 | |
| 1007 | |
| 1008 | SvREFCNT_dec(MUTABLE_SV(PL_stashcache)); |
| 1009 | PL_stashcache = NULL; |
| 1010 | |
| 1011 | /* loosen bonds of global variables */ |
| 1012 | |
| 1013 | /* XXX can PL_parser still be non-null here? */ |
| 1014 | if(PL_parser && PL_parser->rsfp) { |
| 1015 | (void)PerlIO_close(PL_parser->rsfp); |
| 1016 | PL_parser->rsfp = NULL; |
| 1017 | } |
| 1018 | |
| 1019 | if (PL_minus_F) { |
| 1020 | Safefree(PL_splitstr); |
| 1021 | PL_splitstr = NULL; |
| 1022 | } |
| 1023 | |
| 1024 | /* switches */ |
| 1025 | PL_minus_n = FALSE; |
| 1026 | PL_minus_p = FALSE; |
| 1027 | PL_minus_l = FALSE; |
| 1028 | PL_minus_a = FALSE; |
| 1029 | PL_minus_F = FALSE; |
| 1030 | PL_doswitches = FALSE; |
| 1031 | PL_dowarn = G_WARN_OFF; |
| 1032 | #ifdef PERL_SAWAMPERSAND |
| 1033 | PL_sawampersand = 0; /* must save all match strings */ |
| 1034 | #endif |
| 1035 | PL_unsafe = FALSE; |
| 1036 | |
| 1037 | Safefree(PL_inplace); |
| 1038 | PL_inplace = NULL; |
| 1039 | SvREFCNT_dec(PL_patchlevel); |
| 1040 | |
| 1041 | if (PL_e_script) { |
| 1042 | SvREFCNT_dec(PL_e_script); |
| 1043 | PL_e_script = NULL; |
| 1044 | } |
| 1045 | |
| 1046 | PL_perldb = 0; |
| 1047 | |
| 1048 | /* magical thingies */ |
| 1049 | |
| 1050 | SvREFCNT_dec(PL_ofsgv); /* *, */ |
| 1051 | PL_ofsgv = NULL; |
| 1052 | |
| 1053 | SvREFCNT_dec(PL_ors_sv); /* $\ */ |
| 1054 | PL_ors_sv = NULL; |
| 1055 | |
| 1056 | SvREFCNT_dec(PL_rs); /* $/ */ |
| 1057 | PL_rs = NULL; |
| 1058 | |
| 1059 | Safefree(PL_osname); /* $^O */ |
| 1060 | PL_osname = NULL; |
| 1061 | |
| 1062 | SvREFCNT_dec(PL_statname); |
| 1063 | PL_statname = NULL; |
| 1064 | PL_statgv = NULL; |
| 1065 | |
| 1066 | /* defgv, aka *_ should be taken care of elsewhere */ |
| 1067 | |
| 1068 | /* float buffer */ |
| 1069 | Safefree(PL_efloatbuf); |
| 1070 | PL_efloatbuf = NULL; |
| 1071 | PL_efloatsize = 0; |
| 1072 | |
| 1073 | /* startup and shutdown function lists */ |
| 1074 | SvREFCNT_dec(PL_beginav); |
| 1075 | SvREFCNT_dec(PL_beginav_save); |
| 1076 | SvREFCNT_dec(PL_endav); |
| 1077 | SvREFCNT_dec(PL_checkav); |
| 1078 | SvREFCNT_dec(PL_checkav_save); |
| 1079 | SvREFCNT_dec(PL_unitcheckav); |
| 1080 | SvREFCNT_dec(PL_unitcheckav_save); |
| 1081 | SvREFCNT_dec(PL_initav); |
| 1082 | PL_beginav = NULL; |
| 1083 | PL_beginav_save = NULL; |
| 1084 | PL_endav = NULL; |
| 1085 | PL_checkav = NULL; |
| 1086 | PL_checkav_save = NULL; |
| 1087 | PL_unitcheckav = NULL; |
| 1088 | PL_unitcheckav_save = NULL; |
| 1089 | PL_initav = NULL; |
| 1090 | |
| 1091 | /* shortcuts just get cleared */ |
| 1092 | PL_hintgv = NULL; |
| 1093 | PL_errgv = NULL; |
| 1094 | PL_argvoutgv = NULL; |
| 1095 | PL_stdingv = NULL; |
| 1096 | PL_stderrgv = NULL; |
| 1097 | PL_last_in_gv = NULL; |
| 1098 | PL_DBsingle = NULL; |
| 1099 | PL_DBtrace = NULL; |
| 1100 | PL_DBsignal = NULL; |
| 1101 | PL_DBsingle_iv = 0; |
| 1102 | PL_DBtrace_iv = 0; |
| 1103 | PL_DBsignal_iv = 0; |
| 1104 | PL_DBcv = NULL; |
| 1105 | PL_dbargs = NULL; |
| 1106 | PL_debstash = NULL; |
| 1107 | |
| 1108 | SvREFCNT_dec(PL_envgv); |
| 1109 | SvREFCNT_dec(PL_incgv); |
| 1110 | SvREFCNT_dec(PL_argvgv); |
| 1111 | SvREFCNT_dec(PL_replgv); |
| 1112 | SvREFCNT_dec(PL_DBgv); |
| 1113 | SvREFCNT_dec(PL_DBline); |
| 1114 | SvREFCNT_dec(PL_DBsub); |
| 1115 | PL_envgv = NULL; |
| 1116 | PL_incgv = NULL; |
| 1117 | PL_argvgv = NULL; |
| 1118 | PL_replgv = NULL; |
| 1119 | PL_DBgv = NULL; |
| 1120 | PL_DBline = NULL; |
| 1121 | PL_DBsub = NULL; |
| 1122 | |
| 1123 | SvREFCNT_dec(PL_argvout_stack); |
| 1124 | PL_argvout_stack = NULL; |
| 1125 | |
| 1126 | SvREFCNT_dec(PL_modglobal); |
| 1127 | PL_modglobal = NULL; |
| 1128 | SvREFCNT_dec(PL_preambleav); |
| 1129 | PL_preambleav = NULL; |
| 1130 | SvREFCNT_dec(PL_subname); |
| 1131 | PL_subname = NULL; |
| 1132 | #ifdef PERL_USES_PL_PIDSTATUS |
| 1133 | SvREFCNT_dec(PL_pidstatus); |
| 1134 | PL_pidstatus = NULL; |
| 1135 | #endif |
| 1136 | SvREFCNT_dec(PL_toptarget); |
| 1137 | PL_toptarget = NULL; |
| 1138 | SvREFCNT_dec(PL_bodytarget); |
| 1139 | PL_bodytarget = NULL; |
| 1140 | PL_formtarget = NULL; |
| 1141 | |
| 1142 | /* free locale stuff */ |
| 1143 | #ifdef USE_LOCALE_COLLATE |
| 1144 | Safefree(PL_collation_name); |
| 1145 | PL_collation_name = NULL; |
| 1146 | #endif |
| 1147 | |
| 1148 | #ifdef USE_LOCALE_NUMERIC |
| 1149 | Safefree(PL_numeric_name); |
| 1150 | PL_numeric_name = NULL; |
| 1151 | SvREFCNT_dec(PL_numeric_radix_sv); |
| 1152 | PL_numeric_radix_sv = NULL; |
| 1153 | #endif |
| 1154 | |
| 1155 | if (PL_langinfo_buf) { |
| 1156 | Safefree(PL_langinfo_buf); |
| 1157 | PL_langinfo_buf = NULL; |
| 1158 | } |
| 1159 | |
| 1160 | /* clear character classes */ |
| 1161 | for (i = 0; i < POSIX_SWASH_COUNT; i++) { |
| 1162 | SvREFCNT_dec(PL_utf8_swash_ptrs[i]); |
| 1163 | PL_utf8_swash_ptrs[i] = NULL; |
| 1164 | } |
| 1165 | SvREFCNT_dec(PL_utf8_mark); |
| 1166 | SvREFCNT_dec(PL_utf8_toupper); |
| 1167 | SvREFCNT_dec(PL_utf8_totitle); |
| 1168 | SvREFCNT_dec(PL_utf8_tolower); |
| 1169 | SvREFCNT_dec(PL_utf8_tofold); |
| 1170 | SvREFCNT_dec(PL_utf8_idstart); |
| 1171 | SvREFCNT_dec(PL_utf8_idcont); |
| 1172 | SvREFCNT_dec(PL_utf8_foldable); |
| 1173 | SvREFCNT_dec(PL_utf8_foldclosures); |
| 1174 | SvREFCNT_dec(PL_AboveLatin1); |
| 1175 | SvREFCNT_dec(PL_InBitmap); |
| 1176 | SvREFCNT_dec(PL_UpperLatin1); |
| 1177 | SvREFCNT_dec(PL_Latin1); |
| 1178 | SvREFCNT_dec(PL_NonL1NonFinalFold); |
| 1179 | SvREFCNT_dec(PL_HasMultiCharFold); |
| 1180 | #ifdef USE_LOCALE_CTYPE |
| 1181 | SvREFCNT_dec(PL_warn_locale); |
| 1182 | #endif |
| 1183 | PL_utf8_mark = NULL; |
| 1184 | PL_utf8_toupper = NULL; |
| 1185 | PL_utf8_totitle = NULL; |
| 1186 | PL_utf8_tolower = NULL; |
| 1187 | PL_utf8_tofold = NULL; |
| 1188 | PL_utf8_idstart = NULL; |
| 1189 | PL_utf8_idcont = NULL; |
| 1190 | PL_utf8_foldclosures = NULL; |
| 1191 | PL_AboveLatin1 = NULL; |
| 1192 | PL_InBitmap = NULL; |
| 1193 | PL_HasMultiCharFold = NULL; |
| 1194 | #ifdef USE_LOCALE_CTYPE |
| 1195 | PL_warn_locale = NULL; |
| 1196 | #endif |
| 1197 | PL_Latin1 = NULL; |
| 1198 | PL_NonL1NonFinalFold = NULL; |
| 1199 | PL_UpperLatin1 = NULL; |
| 1200 | for (i = 0; i < POSIX_CC_COUNT; i++) { |
| 1201 | SvREFCNT_dec(PL_XPosix_ptrs[i]); |
| 1202 | PL_XPosix_ptrs[i] = NULL; |
| 1203 | } |
| 1204 | PL_GCB_invlist = NULL; |
| 1205 | PL_LB_invlist = NULL; |
| 1206 | PL_SB_invlist = NULL; |
| 1207 | PL_WB_invlist = NULL; |
| 1208 | PL_Assigned_invlist = NULL; |
| 1209 | |
| 1210 | if (!specialWARN(PL_compiling.cop_warnings)) |
| 1211 | PerlMemShared_free(PL_compiling.cop_warnings); |
| 1212 | PL_compiling.cop_warnings = NULL; |
| 1213 | cophh_free(CopHINTHASH_get(&PL_compiling)); |
| 1214 | CopHINTHASH_set(&PL_compiling, cophh_new_empty()); |
| 1215 | CopFILE_free(&PL_compiling); |
| 1216 | |
| 1217 | /* Prepare to destruct main symbol table. */ |
| 1218 | |
| 1219 | hv = PL_defstash; |
| 1220 | /* break ref loop *:: <=> %:: */ |
| 1221 | (void)hv_deletes(hv, "main::", G_DISCARD); |
| 1222 | PL_defstash = 0; |
| 1223 | SvREFCNT_dec(hv); |
| 1224 | SvREFCNT_dec(PL_curstname); |
| 1225 | PL_curstname = NULL; |
| 1226 | |
| 1227 | /* clear queued errors */ |
| 1228 | SvREFCNT_dec(PL_errors); |
| 1229 | PL_errors = NULL; |
| 1230 | |
| 1231 | SvREFCNT_dec(PL_isarev); |
| 1232 | |
| 1233 | FREETMPS; |
| 1234 | if (destruct_level >= 2) { |
| 1235 | if (PL_scopestack_ix != 0) |
| 1236 | Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL), |
| 1237 | "Unbalanced scopes: %ld more ENTERs than LEAVEs\n", |
| 1238 | (long)PL_scopestack_ix); |
| 1239 | if (PL_savestack_ix != 0) |
| 1240 | Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL), |
| 1241 | "Unbalanced saves: %ld more saves than restores\n", |
| 1242 | (long)PL_savestack_ix); |
| 1243 | if (PL_tmps_floor != -1) |
| 1244 | Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n", |
| 1245 | (long)PL_tmps_floor + 1); |
| 1246 | if (cxstack_ix != -1) |
| 1247 | Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n", |
| 1248 | (long)cxstack_ix + 1); |
| 1249 | } |
| 1250 | |
| 1251 | #ifdef USE_ITHREADS |
| 1252 | SvREFCNT_dec(PL_regex_padav); |
| 1253 | PL_regex_padav = NULL; |
| 1254 | PL_regex_pad = NULL; |
| 1255 | #endif |
| 1256 | |
| 1257 | #ifdef PERL_IMPLICIT_CONTEXT |
| 1258 | /* the entries in this list are allocated via SV PVX's, so get freed |
| 1259 | * in sv_clean_all */ |
| 1260 | Safefree(PL_my_cxt_list); |
| 1261 | #endif |
| 1262 | |
| 1263 | /* Now absolutely destruct everything, somehow or other, loops or no. */ |
| 1264 | |
| 1265 | /* the 2 is for PL_fdpid and PL_strtab */ |
| 1266 | while (sv_clean_all() > 2) |
| 1267 | ; |
| 1268 | |
| 1269 | #ifdef USE_ITHREADS |
| 1270 | Safefree(PL_stashpad); /* must come after sv_clean_all */ |
| 1271 | #endif |
| 1272 | |
| 1273 | AvREAL_off(PL_fdpid); /* no surviving entries */ |
| 1274 | SvREFCNT_dec(PL_fdpid); /* needed in io_close() */ |
| 1275 | PL_fdpid = NULL; |
| 1276 | |
| 1277 | #ifdef HAVE_INTERP_INTERN |
| 1278 | sys_intern_clear(); |
| 1279 | #endif |
| 1280 | |
| 1281 | /* constant strings */ |
| 1282 | for (i = 0; i < SV_CONSTS_COUNT; i++) { |
| 1283 | SvREFCNT_dec(PL_sv_consts[i]); |
| 1284 | PL_sv_consts[i] = NULL; |
| 1285 | } |
| 1286 | |
| 1287 | /* Destruct the global string table. */ |
| 1288 | { |
| 1289 | /* Yell and reset the HeVAL() slots that are still holding refcounts, |
| 1290 | * so that sv_free() won't fail on them. |
| 1291 | * Now that the global string table is using a single hunk of memory |
| 1292 | * for both HE and HEK, we either need to explicitly unshare it the |
| 1293 | * correct way, or actually free things here. |
| 1294 | */ |
| 1295 | I32 riter = 0; |
| 1296 | const I32 max = HvMAX(PL_strtab); |
| 1297 | HE * const * const array = HvARRAY(PL_strtab); |
| 1298 | HE *hent = array[0]; |
| 1299 | |
| 1300 | for (;;) { |
| 1301 | if (hent && ckWARN_d(WARN_INTERNAL)) { |
| 1302 | HE * const next = HeNEXT(hent); |
| 1303 | Perl_warner(aTHX_ packWARN(WARN_INTERNAL), |
| 1304 | "Unbalanced string table refcount: (%ld) for \"%s\"", |
| 1305 | (long)hent->he_valu.hent_refcount, HeKEY(hent)); |
| 1306 | Safefree(hent); |
| 1307 | hent = next; |
| 1308 | } |
| 1309 | if (!hent) { |
| 1310 | if (++riter > max) |
| 1311 | break; |
| 1312 | hent = array[riter]; |
| 1313 | } |
| 1314 | } |
| 1315 | |
| 1316 | Safefree(array); |
| 1317 | HvARRAY(PL_strtab) = 0; |
| 1318 | HvTOTALKEYS(PL_strtab) = 0; |
| 1319 | } |
| 1320 | SvREFCNT_dec(PL_strtab); |
| 1321 | |
| 1322 | #ifdef USE_ITHREADS |
| 1323 | /* free the pointer tables used for cloning */ |
| 1324 | ptr_table_free(PL_ptr_table); |
| 1325 | PL_ptr_table = (PTR_TBL_t*)NULL; |
| 1326 | #endif |
| 1327 | |
| 1328 | /* free special SVs */ |
| 1329 | |
| 1330 | SvREFCNT(&PL_sv_yes) = 0; |
| 1331 | sv_clear(&PL_sv_yes); |
| 1332 | SvANY(&PL_sv_yes) = NULL; |
| 1333 | SvFLAGS(&PL_sv_yes) = 0; |
| 1334 | |
| 1335 | SvREFCNT(&PL_sv_no) = 0; |
| 1336 | sv_clear(&PL_sv_no); |
| 1337 | SvANY(&PL_sv_no) = NULL; |
| 1338 | SvFLAGS(&PL_sv_no) = 0; |
| 1339 | |
| 1340 | SvREFCNT(&PL_sv_zero) = 0; |
| 1341 | sv_clear(&PL_sv_zero); |
| 1342 | SvANY(&PL_sv_zero) = NULL; |
| 1343 | SvFLAGS(&PL_sv_zero) = 0; |
| 1344 | |
| 1345 | { |
| 1346 | int i; |
| 1347 | for (i=0; i<=2; i++) { |
| 1348 | SvREFCNT(PERL_DEBUG_PAD(i)) = 0; |
| 1349 | sv_clear(PERL_DEBUG_PAD(i)); |
| 1350 | SvANY(PERL_DEBUG_PAD(i)) = NULL; |
| 1351 | SvFLAGS(PERL_DEBUG_PAD(i)) = 0; |
| 1352 | } |
| 1353 | } |
| 1354 | |
| 1355 | if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL)) |
| 1356 | Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count); |
| 1357 | |
| 1358 | #ifdef DEBUG_LEAKING_SCALARS |
| 1359 | if (PL_sv_count != 0) { |
| 1360 | SV* sva; |
| 1361 | SV* sv; |
| 1362 | SV* svend; |
| 1363 | |
| 1364 | for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) { |
| 1365 | svend = &sva[SvREFCNT(sva)]; |
| 1366 | for (sv = sva + 1; sv < svend; ++sv) { |
| 1367 | if (SvTYPE(sv) != (svtype)SVTYPEMASK) { |
| 1368 | PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p" |
| 1369 | " flags=0x%"UVxf |
| 1370 | " refcnt=%"UVuf pTHX__FORMAT "\n" |
| 1371 | "\tallocated at %s:%d %s %s (parent 0x%" UVxf ");" |
| 1372 | "serial %" UVuf "\n", |
| 1373 | (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt |
| 1374 | pTHX__VALUE, |
| 1375 | sv->sv_debug_file ? sv->sv_debug_file : "(unknown)", |
| 1376 | sv->sv_debug_line, |
| 1377 | sv->sv_debug_inpad ? "for" : "by", |
| 1378 | sv->sv_debug_optype ? |
| 1379 | PL_op_name[sv->sv_debug_optype]: "(none)", |
| 1380 | PTR2UV(sv->sv_debug_parent), |
| 1381 | sv->sv_debug_serial |
| 1382 | ); |
| 1383 | #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP |
| 1384 | Perl_dump_sv_child(aTHX_ sv); |
| 1385 | #endif |
| 1386 | } |
| 1387 | } |
| 1388 | } |
| 1389 | } |
| 1390 | #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP |
| 1391 | { |
| 1392 | int status; |
| 1393 | fd_set rset; |
| 1394 | /* Wait for up to 4 seconds for child to terminate. |
| 1395 | This seems to be the least effort way of timing out on reaping |
| 1396 | its exit status. */ |
| 1397 | struct timeval waitfor = {4, 0}; |
| 1398 | int sock = PL_dumper_fd; |
| 1399 | |
| 1400 | shutdown(sock, 1); |
| 1401 | FD_ZERO(&rset); |
| 1402 | FD_SET(sock, &rset); |
| 1403 | select(sock + 1, &rset, NULL, NULL, &waitfor); |
| 1404 | waitpid(child, &status, WNOHANG); |
| 1405 | close(sock); |
| 1406 | } |
| 1407 | #endif |
| 1408 | #endif |
| 1409 | #ifdef DEBUG_LEAKING_SCALARS_ABORT |
| 1410 | if (PL_sv_count) |
| 1411 | abort(); |
| 1412 | #endif |
| 1413 | PL_sv_count = 0; |
| 1414 | |
| 1415 | #if defined(PERLIO_LAYERS) |
| 1416 | /* No more IO - including error messages ! */ |
| 1417 | PerlIO_cleanup(aTHX); |
| 1418 | #endif |
| 1419 | |
| 1420 | /* sv_undef needs to stay immortal until after PerlIO_cleanup |
| 1421 | as currently layers use it rather than NULL as a marker |
| 1422 | for no arg - and will try and SvREFCNT_dec it. |
| 1423 | */ |
| 1424 | SvREFCNT(&PL_sv_undef) = 0; |
| 1425 | SvREADONLY_off(&PL_sv_undef); |
| 1426 | |
| 1427 | Safefree(PL_origfilename); |
| 1428 | PL_origfilename = NULL; |
| 1429 | Safefree(PL_reg_curpm); |
| 1430 | free_tied_hv_pool(); |
| 1431 | Safefree(PL_op_mask); |
| 1432 | Safefree(PL_psig_name); |
| 1433 | PL_psig_name = (SV**)NULL; |
| 1434 | PL_psig_ptr = (SV**)NULL; |
| 1435 | { |
| 1436 | /* We need to NULL PL_psig_pend first, so that |
| 1437 | signal handlers know not to use it */ |
| 1438 | int *psig_save = PL_psig_pend; |
| 1439 | PL_psig_pend = (int*)NULL; |
| 1440 | Safefree(psig_save); |
| 1441 | } |
| 1442 | nuke_stacks(); |
| 1443 | TAINTING_set(FALSE); |
| 1444 | TAINT_WARN_set(FALSE); |
| 1445 | PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */ |
| 1446 | |
| 1447 | DEBUG_P(debprofdump()); |
| 1448 | |
| 1449 | PL_debug = 0; |
| 1450 | |
| 1451 | #ifdef USE_REENTRANT_API |
| 1452 | Perl_reentrant_free(aTHX); |
| 1453 | #endif |
| 1454 | |
| 1455 | /* These all point to HVs that are about to be blown away. |
| 1456 | Code in core and on CPAN assumes that if the interpreter is re-started |
| 1457 | that they will be cleanly NULL or pointing to a valid HV. */ |
| 1458 | PL_custom_op_names = NULL; |
| 1459 | PL_custom_op_descs = NULL; |
| 1460 | PL_custom_ops = NULL; |
| 1461 | |
| 1462 | sv_free_arenas(); |
| 1463 | |
| 1464 | while (PL_regmatch_slab) { |
| 1465 | regmatch_slab *s = PL_regmatch_slab; |
| 1466 | PL_regmatch_slab = PL_regmatch_slab->next; |
| 1467 | Safefree(s); |
| 1468 | } |
| 1469 | |
| 1470 | /* As the absolutely last thing, free the non-arena SV for mess() */ |
| 1471 | |
| 1472 | if (PL_mess_sv) { |
| 1473 | /* we know that type == SVt_PVMG */ |
| 1474 | |
| 1475 | /* it could have accumulated taint magic */ |
| 1476 | MAGIC* mg; |
| 1477 | MAGIC* moremagic; |
| 1478 | for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) { |
| 1479 | moremagic = mg->mg_moremagic; |
| 1480 | if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global |
| 1481 | && mg->mg_len >= 0) |
| 1482 | Safefree(mg->mg_ptr); |
| 1483 | Safefree(mg); |
| 1484 | } |
| 1485 | |
| 1486 | /* we know that type >= SVt_PV */ |
| 1487 | SvPV_free(PL_mess_sv); |
| 1488 | Safefree(SvANY(PL_mess_sv)); |
| 1489 | Safefree(PL_mess_sv); |
| 1490 | PL_mess_sv = NULL; |
| 1491 | } |
| 1492 | return STATUS_EXIT; |
| 1493 | } |
| 1494 | |
| 1495 | /* |
| 1496 | =for apidoc perl_free |
| 1497 | |
| 1498 | Releases a Perl interpreter. See L<perlembed>. |
| 1499 | |
| 1500 | =cut |
| 1501 | */ |
| 1502 | |
| 1503 | void |
| 1504 | perl_free(pTHXx) |
| 1505 | { |
| 1506 | dVAR; |
| 1507 | |
| 1508 | PERL_ARGS_ASSERT_PERL_FREE; |
| 1509 | |
| 1510 | if (PL_veto_cleanup) |
| 1511 | return; |
| 1512 | |
| 1513 | #ifdef PERL_TRACK_MEMPOOL |
| 1514 | { |
| 1515 | /* |
| 1516 | * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero |
| 1517 | * value as we're probably hunting memory leaks then |
| 1518 | */ |
| 1519 | if (PL_perl_destruct_level == 0) { |
| 1520 | const U32 old_debug = PL_debug; |
| 1521 | /* Emulate the PerlHost behaviour of free()ing all memory allocated in this |
| 1522 | thread at thread exit. */ |
| 1523 | if (DEBUG_m_TEST) { |
| 1524 | PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we " |
| 1525 | "free this thread's memory\n"); |
| 1526 | PL_debug &= ~ DEBUG_m_FLAG; |
| 1527 | } |
| 1528 | while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header)){ |
| 1529 | char * next = (char *)(aTHXx->Imemory_debug_header.next); |
| 1530 | Malloc_t ptr = PERL_MEMORY_DEBUG_HEADER_SIZE + next; |
| 1531 | safesysfree(ptr); |
| 1532 | } |
| 1533 | PL_debug = old_debug; |
| 1534 | } |
| 1535 | } |
| 1536 | #endif |
| 1537 | |
| 1538 | #if defined(WIN32) || defined(NETWARE) |
| 1539 | # if defined(PERL_IMPLICIT_SYS) |
| 1540 | { |
| 1541 | # ifdef NETWARE |
| 1542 | void *host = nw_internal_host; |
| 1543 | PerlMem_free(aTHXx); |
| 1544 | nw_delete_internal_host(host); |
| 1545 | # else |
| 1546 | void *host = w32_internal_host; |
| 1547 | PerlMem_free(aTHXx); |
| 1548 | win32_delete_internal_host(host); |
| 1549 | # endif |
| 1550 | } |
| 1551 | # else |
| 1552 | PerlMem_free(aTHXx); |
| 1553 | # endif |
| 1554 | #else |
| 1555 | PerlMem_free(aTHXx); |
| 1556 | #endif |
| 1557 | } |
| 1558 | |
| 1559 | #if defined(USE_ITHREADS) |
| 1560 | /* provide destructors to clean up the thread key when libperl is unloaded */ |
| 1561 | #ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */ |
| 1562 | |
| 1563 | #if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__) |
| 1564 | #pragma fini "perl_fini" |
| 1565 | #elif defined(__sun) && !defined(__GNUC__) |
| 1566 | #pragma fini (perl_fini) |
| 1567 | #endif |
| 1568 | |
| 1569 | static void |
| 1570 | #if defined(__GNUC__) |
| 1571 | __attribute__((destructor)) |
| 1572 | #endif |
| 1573 | perl_fini(void) |
| 1574 | { |
| 1575 | dVAR; |
| 1576 | if ( |
| 1577 | #ifdef PERL_GLOBAL_STRUCT_PRIVATE |
| 1578 | my_vars && |
| 1579 | #endif |
| 1580 | PL_curinterp && !PL_veto_cleanup) |
| 1581 | FREE_THREAD_KEY; |
| 1582 | } |
| 1583 | |
| 1584 | #endif /* WIN32 */ |
| 1585 | #endif /* THREADS */ |
| 1586 | |
| 1587 | void |
| 1588 | Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr) |
| 1589 | { |
| 1590 | Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry); |
| 1591 | PL_exitlist[PL_exitlistlen].fn = fn; |
| 1592 | PL_exitlist[PL_exitlistlen].ptr = ptr; |
| 1593 | ++PL_exitlistlen; |
| 1594 | } |
| 1595 | |
| 1596 | /* |
| 1597 | =for apidoc Am|int|perl_parse|PerlInterpreter *my_perl|XSINIT_t xsinit|int argc|char **argv|char **env |
| 1598 | |
| 1599 | Tells a Perl interpreter to parse a Perl script. This performs most |
| 1600 | of the initialisation of a Perl interpreter. See L<perlembed> for |
| 1601 | a tutorial. |
| 1602 | |
| 1603 | C<my_perl> points to the Perl interpreter that is to parse the script. |
| 1604 | It must have been previously created through the use of L</perl_alloc> |
| 1605 | and L</perl_construct>. C<xsinit> points to a callback function that |
| 1606 | will be called to set up the ability for this Perl interpreter to load |
| 1607 | XS extensions, or may be null to perform no such setup. |
| 1608 | |
| 1609 | C<argc> and C<argv> supply a set of command-line arguments to the Perl |
| 1610 | interpreter, as would normally be passed to the C<main> function of |
| 1611 | a C program. C<argv[argc]> must be null. These arguments are where |
| 1612 | the script to parse is specified, either by naming a script file or by |
| 1613 | providing a script in a C<-e> option. |
| 1614 | |
| 1615 | C<env> specifies a set of environment variables that will be used by |
| 1616 | this Perl interpreter. If non-null, it must point to a null-terminated |
| 1617 | array of environment strings. If null, the Perl interpreter will use |
| 1618 | the environment supplied by the C<environ> global variable. |
| 1619 | |
| 1620 | This function initialises the interpreter, and parses and compiles the |
| 1621 | script specified by the command-line arguments. This includes executing |
| 1622 | code in C<BEGIN>, C<UNITCHECK>, and C<CHECK> blocks. It does not execute |
| 1623 | C<INIT> blocks or the main program. |
| 1624 | |
| 1625 | Returns an integer of slightly tricky interpretation. The correct |
| 1626 | use of the return value is as a truth value indicating whether there |
| 1627 | was a failure in initialisation. If zero is returned, this indicates |
| 1628 | that initialisation was successful, and it is safe to proceed to call |
| 1629 | L</perl_run> and make other use of it. If a non-zero value is returned, |
| 1630 | this indicates some problem that means the interpreter wants to terminate. |
| 1631 | The interpreter should not be just abandoned upon such failure; the caller |
| 1632 | should proceed to shut the interpreter down cleanly with L</perl_destruct> |
| 1633 | and free it with L</perl_free>. |
| 1634 | |
| 1635 | For historical reasons, the non-zero return value also attempts to |
| 1636 | be a suitable value to pass to the C library function C<exit> (or to |
| 1637 | return from C<main>), to serve as an exit code indicating the nature |
| 1638 | of the way initialisation terminated. However, this isn't portable, |
| 1639 | due to differing exit code conventions. An attempt is made to return |
| 1640 | an exit code of the type required by the host operating system, but |
| 1641 | because it is constrained to be non-zero, it is not necessarily possible |
| 1642 | to indicate every type of exit. It is only reliable on Unix, where a |
| 1643 | zero exit code can be augmented with a set bit that will be ignored. |
| 1644 | In any case, this function is not the correct place to acquire an exit |
| 1645 | code: one should get that from L</perl_destruct>. |
| 1646 | |
| 1647 | =cut |
| 1648 | */ |
| 1649 | |
| 1650 | #define SET_CURSTASH(newstash) \ |
| 1651 | if (PL_curstash != newstash) { \ |
| 1652 | SvREFCNT_dec(PL_curstash); \ |
| 1653 | PL_curstash = (HV *)SvREFCNT_inc(newstash); \ |
| 1654 | } |
| 1655 | |
| 1656 | int |
| 1657 | perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env) |
| 1658 | { |
| 1659 | dVAR; |
| 1660 | I32 oldscope; |
| 1661 | int ret; |
| 1662 | dJMPENV; |
| 1663 | |
| 1664 | PERL_ARGS_ASSERT_PERL_PARSE; |
| 1665 | #ifndef MULTIPLICITY |
| 1666 | PERL_UNUSED_ARG(my_perl); |
| 1667 | #endif |
| 1668 | #if (defined(USE_HASH_SEED) || defined(USE_HASH_SEED_DEBUG)) && !defined(NO_PERL_HASH_SEED_DEBUG) |
| 1669 | { |
| 1670 | const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG"); |
| 1671 | |
| 1672 | if (s && strEQ(s, "1")) { |
| 1673 | const unsigned char *seed= PERL_HASH_SEED; |
| 1674 | const unsigned char *seed_end= PERL_HASH_SEED + PERL_HASH_SEED_BYTES; |
| 1675 | PerlIO_printf(Perl_debug_log, "HASH_FUNCTION = %s HASH_SEED = 0x", PERL_HASH_FUNC); |
| 1676 | while (seed < seed_end) { |
| 1677 | PerlIO_printf(Perl_debug_log, "%02x", *seed++); |
| 1678 | } |
| 1679 | #ifdef PERL_HASH_RANDOMIZE_KEYS |
| 1680 | PerlIO_printf(Perl_debug_log, " PERTURB_KEYS = %d (%s)", |
| 1681 | PL_HASH_RAND_BITS_ENABLED, |
| 1682 | PL_HASH_RAND_BITS_ENABLED == 0 ? "NO" : PL_HASH_RAND_BITS_ENABLED == 1 ? "RANDOM" : "DETERMINISTIC"); |
| 1683 | #endif |
| 1684 | PerlIO_printf(Perl_debug_log, "\n"); |
| 1685 | } |
| 1686 | } |
| 1687 | #endif /* #if (defined(USE_HASH_SEED) ... */ |
| 1688 | |
| 1689 | #ifdef __amigaos4__ |
| 1690 | { |
| 1691 | struct NameTranslationInfo nti; |
| 1692 | __translate_amiga_to_unix_path_name(&argv[0],&nti); |
| 1693 | } |
| 1694 | #endif |
| 1695 | |
| 1696 | { |
| 1697 | int i; |
| 1698 | assert(argc >= 0); |
| 1699 | for(i = 0; i != argc; i++) |
| 1700 | assert(argv[i]); |
| 1701 | assert(!argv[argc]); |
| 1702 | } |
| 1703 | PL_origargc = argc; |
| 1704 | PL_origargv = argv; |
| 1705 | |
| 1706 | if (PL_origalen != 0) { |
| 1707 | PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */ |
| 1708 | } |
| 1709 | else { |
| 1710 | /* Set PL_origalen be the sum of the contiguous argv[] |
| 1711 | * elements plus the size of the env in case that it is |
| 1712 | * contiguous with the argv[]. This is used in mg.c:Perl_magic_set() |
| 1713 | * as the maximum modifiable length of $0. In the worst case |
| 1714 | * the area we are able to modify is limited to the size of |
| 1715 | * the original argv[0]. (See below for 'contiguous', though.) |
| 1716 | * --jhi */ |
| 1717 | const char *s = NULL; |
| 1718 | const UV mask = ~(UV)(PTRSIZE-1); |
| 1719 | /* Do the mask check only if the args seem like aligned. */ |
| 1720 | const UV aligned = |
| 1721 | (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0])); |
| 1722 | |
| 1723 | /* See if all the arguments are contiguous in memory. Note |
| 1724 | * that 'contiguous' is a loose term because some platforms |
| 1725 | * align the argv[] and the envp[]. If the arguments look |
| 1726 | * like non-aligned, assume that they are 'strictly' or |
| 1727 | * 'traditionally' contiguous. If the arguments look like |
| 1728 | * aligned, we just check that they are within aligned |
| 1729 | * PTRSIZE bytes. As long as no system has something bizarre |
| 1730 | * like the argv[] interleaved with some other data, we are |
| 1731 | * fine. (Did I just evoke Murphy's Law?) --jhi */ |
| 1732 | if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) { |
| 1733 | int i; |
| 1734 | while (*s) s++; |
| 1735 | for (i = 1; i < PL_origargc; i++) { |
| 1736 | if ((PL_origargv[i] == s + 1 |
| 1737 | #ifdef OS2 |
| 1738 | || PL_origargv[i] == s + 2 |
| 1739 | #endif |
| 1740 | ) |
| 1741 | || |
| 1742 | (aligned && |
| 1743 | (PL_origargv[i] > s && |
| 1744 | PL_origargv[i] <= |
| 1745 | INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask))) |
| 1746 | ) |
| 1747 | { |
| 1748 | s = PL_origargv[i]; |
| 1749 | while (*s) s++; |
| 1750 | } |
| 1751 | else |
| 1752 | break; |
| 1753 | } |
| 1754 | } |
| 1755 | |
| 1756 | #ifndef PERL_USE_SAFE_PUTENV |
| 1757 | /* Can we grab env area too to be used as the area for $0? */ |
| 1758 | if (s && PL_origenviron && !PL_use_safe_putenv) { |
| 1759 | if ((PL_origenviron[0] == s + 1) |
| 1760 | || |
| 1761 | (aligned && |
| 1762 | (PL_origenviron[0] > s && |
| 1763 | PL_origenviron[0] <= |
| 1764 | INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask))) |
| 1765 | ) |
| 1766 | { |
| 1767 | int i; |
| 1768 | #ifndef OS2 /* ENVIRON is read by the kernel too. */ |
| 1769 | s = PL_origenviron[0]; |
| 1770 | while (*s) s++; |
| 1771 | #endif |
| 1772 | my_setenv("NoNe SuCh", NULL); |
| 1773 | /* Force copy of environment. */ |
| 1774 | for (i = 1; PL_origenviron[i]; i++) { |
| 1775 | if (PL_origenviron[i] == s + 1 |
| 1776 | || |
| 1777 | (aligned && |
| 1778 | (PL_origenviron[i] > s && |
| 1779 | PL_origenviron[i] <= |
| 1780 | INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask))) |
| 1781 | ) |
| 1782 | { |
| 1783 | s = PL_origenviron[i]; |
| 1784 | while (*s) s++; |
| 1785 | } |
| 1786 | else |
| 1787 | break; |
| 1788 | } |
| 1789 | } |
| 1790 | } |
| 1791 | #endif /* !defined(PERL_USE_SAFE_PUTENV) */ |
| 1792 | |
| 1793 | PL_origalen = s ? s - PL_origargv[0] + 1 : 0; |
| 1794 | } |
| 1795 | |
| 1796 | if (PL_do_undump) { |
| 1797 | |
| 1798 | /* Come here if running an undumped a.out. */ |
| 1799 | |
| 1800 | PL_origfilename = savepv(argv[0]); |
| 1801 | PL_do_undump = FALSE; |
| 1802 | cxstack_ix = -1; /* start label stack again */ |
| 1803 | init_ids(); |
| 1804 | assert (!TAINT_get); |
| 1805 | TAINT; |
| 1806 | set_caret_X(); |
| 1807 | TAINT_NOT; |
| 1808 | init_postdump_symbols(argc,argv,env); |
| 1809 | return 0; |
| 1810 | } |
| 1811 | |
| 1812 | if (PL_main_root) { |
| 1813 | op_free(PL_main_root); |
| 1814 | PL_main_root = NULL; |
| 1815 | } |
| 1816 | PL_main_start = NULL; |
| 1817 | SvREFCNT_dec(PL_main_cv); |
| 1818 | PL_main_cv = NULL; |
| 1819 | |
| 1820 | time(&PL_basetime); |
| 1821 | oldscope = PL_scopestack_ix; |
| 1822 | PL_dowarn = G_WARN_OFF; |
| 1823 | |
| 1824 | JMPENV_PUSH(ret); |
| 1825 | switch (ret) { |
| 1826 | case 0: |
| 1827 | parse_body(env,xsinit); |
| 1828 | if (PL_unitcheckav) { |
| 1829 | call_list(oldscope, PL_unitcheckav); |
| 1830 | } |
| 1831 | if (PL_checkav) { |
| 1832 | PERL_SET_PHASE(PERL_PHASE_CHECK); |
| 1833 | call_list(oldscope, PL_checkav); |
| 1834 | } |
| 1835 | ret = 0; |
| 1836 | break; |
| 1837 | case 1: |
| 1838 | STATUS_ALL_FAILURE; |
| 1839 | /* FALLTHROUGH */ |
| 1840 | case 2: |
| 1841 | /* my_exit() was called */ |
| 1842 | while (PL_scopestack_ix > oldscope) |
| 1843 | LEAVE; |
| 1844 | FREETMPS; |
| 1845 | SET_CURSTASH(PL_defstash); |
| 1846 | if (PL_unitcheckav) { |
| 1847 | call_list(oldscope, PL_unitcheckav); |
| 1848 | } |
| 1849 | if (PL_checkav) { |
| 1850 | PERL_SET_PHASE(PERL_PHASE_CHECK); |
| 1851 | call_list(oldscope, PL_checkav); |
| 1852 | } |
| 1853 | ret = STATUS_EXIT; |
| 1854 | if (ret == 0) ret = 0x100; |
| 1855 | break; |
| 1856 | case 3: |
| 1857 | PerlIO_printf(Perl_error_log, "panic: top_env\n"); |
| 1858 | ret = 1; |
| 1859 | break; |
| 1860 | } |
| 1861 | JMPENV_POP; |
| 1862 | return ret; |
| 1863 | } |
| 1864 | |
| 1865 | /* This needs to stay in perl.c, as perl.c is compiled with different flags for |
| 1866 | miniperl, and we need to see those flags reflected in the values here. */ |
| 1867 | |
| 1868 | /* What this returns is subject to change. Use the public interface in Config. |
| 1869 | */ |
| 1870 | static void |
| 1871 | S_Internals_V(pTHX_ CV *cv) |
| 1872 | { |
| 1873 | dXSARGS; |
| 1874 | #ifdef LOCAL_PATCH_COUNT |
| 1875 | const int local_patch_count = LOCAL_PATCH_COUNT; |
| 1876 | #else |
| 1877 | const int local_patch_count = 0; |
| 1878 | #endif |
| 1879 | const int entries = 3 + local_patch_count; |
| 1880 | int i; |
| 1881 | static const char non_bincompat_options[] = |
| 1882 | # ifdef DEBUGGING |
| 1883 | " DEBUGGING" |
| 1884 | # endif |
| 1885 | # ifdef NO_MATHOMS |
| 1886 | " NO_MATHOMS" |
| 1887 | # endif |
| 1888 | # ifdef NO_HASH_SEED |
| 1889 | " NO_HASH_SEED" |
| 1890 | # endif |
| 1891 | # ifdef NO_TAINT_SUPPORT |
| 1892 | " NO_TAINT_SUPPORT" |
| 1893 | # endif |
| 1894 | # ifdef PERL_BOOL_AS_CHAR |
| 1895 | " PERL_BOOL_AS_CHAR" |
| 1896 | # endif |
| 1897 | # ifdef PERL_COPY_ON_WRITE |
| 1898 | " PERL_COPY_ON_WRITE" |
| 1899 | # endif |
| 1900 | # ifdef PERL_DISABLE_PMC |
| 1901 | " PERL_DISABLE_PMC" |
| 1902 | # endif |
| 1903 | # ifdef PERL_DONT_CREATE_GVSV |
| 1904 | " PERL_DONT_CREATE_GVSV" |
| 1905 | # endif |
| 1906 | # ifdef PERL_EXTERNAL_GLOB |
| 1907 | " PERL_EXTERNAL_GLOB" |
| 1908 | # endif |
| 1909 | # ifdef PERL_HASH_FUNC_SIPHASH |
| 1910 | " PERL_HASH_FUNC_SIPHASH" |
| 1911 | # endif |
| 1912 | # ifdef PERL_HASH_FUNC_SDBM |
| 1913 | " PERL_HASH_FUNC_SDBM" |
| 1914 | # endif |
| 1915 | # ifdef PERL_HASH_FUNC_DJB2 |
| 1916 | " PERL_HASH_FUNC_DJB2" |
| 1917 | # endif |
| 1918 | # ifdef PERL_HASH_FUNC_SUPERFAST |
| 1919 | " PERL_HASH_FUNC_SUPERFAST" |
| 1920 | # endif |
| 1921 | # ifdef PERL_HASH_FUNC_MURMUR3 |
| 1922 | " PERL_HASH_FUNC_MURMUR3" |
| 1923 | # endif |
| 1924 | # ifdef PERL_HASH_FUNC_ONE_AT_A_TIME |
| 1925 | " PERL_HASH_FUNC_ONE_AT_A_TIME" |
| 1926 | # endif |
| 1927 | # ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_HARD |
| 1928 | " PERL_HASH_FUNC_ONE_AT_A_TIME_HARD" |
| 1929 | # endif |
| 1930 | # ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_OLD |
| 1931 | " PERL_HASH_FUNC_ONE_AT_A_TIME_OLD" |
| 1932 | # endif |
| 1933 | # ifdef PERL_IS_MINIPERL |
| 1934 | " PERL_IS_MINIPERL" |
| 1935 | # endif |
| 1936 | # ifdef PERL_MALLOC_WRAP |
| 1937 | " PERL_MALLOC_WRAP" |
| 1938 | # endif |
| 1939 | # ifdef PERL_MEM_LOG |
| 1940 | " PERL_MEM_LOG" |
| 1941 | # endif |
| 1942 | # ifdef PERL_MEM_LOG_NOIMPL |
| 1943 | " PERL_MEM_LOG_NOIMPL" |
| 1944 | # endif |
| 1945 | # ifdef PERL_OP_PARENT |
| 1946 | " PERL_OP_PARENT" |
| 1947 | # endif |
| 1948 | # ifdef PERL_PERTURB_KEYS_DETERMINISTIC |
| 1949 | " PERL_PERTURB_KEYS_DETERMINISTIC" |
| 1950 | # endif |
| 1951 | # ifdef PERL_PERTURB_KEYS_DISABLED |
| 1952 | " PERL_PERTURB_KEYS_DISABLED" |
| 1953 | # endif |
| 1954 | # ifdef PERL_PERTURB_KEYS_RANDOM |
| 1955 | " PERL_PERTURB_KEYS_RANDOM" |
| 1956 | # endif |
| 1957 | # ifdef PERL_PRESERVE_IVUV |
| 1958 | " PERL_PRESERVE_IVUV" |
| 1959 | # endif |
| 1960 | # ifdef PERL_RELOCATABLE_INCPUSH |
| 1961 | " PERL_RELOCATABLE_INCPUSH" |
| 1962 | # endif |
| 1963 | # ifdef PERL_USE_DEVEL |
| 1964 | " PERL_USE_DEVEL" |
| 1965 | # endif |
| 1966 | # ifdef PERL_USE_SAFE_PUTENV |
| 1967 | " PERL_USE_SAFE_PUTENV" |
| 1968 | # endif |
| 1969 | # ifdef SILENT_NO_TAINT_SUPPORT |
| 1970 | " SILENT_NO_TAINT_SUPPORT" |
| 1971 | # endif |
| 1972 | # ifdef UNLINK_ALL_VERSIONS |
| 1973 | " UNLINK_ALL_VERSIONS" |
| 1974 | # endif |
| 1975 | # ifdef USE_ATTRIBUTES_FOR_PERLIO |
| 1976 | " USE_ATTRIBUTES_FOR_PERLIO" |
| 1977 | # endif |
| 1978 | # ifdef USE_FAST_STDIO |
| 1979 | " USE_FAST_STDIO" |
| 1980 | # endif |
| 1981 | # ifdef USE_LOCALE |
| 1982 | " USE_LOCALE" |
| 1983 | # endif |
| 1984 | # ifdef USE_LOCALE_CTYPE |
| 1985 | " USE_LOCALE_CTYPE" |
| 1986 | # endif |
| 1987 | # ifdef WIN32_NO_REGISTRY |
| 1988 | " USE_NO_REGISTRY" |
| 1989 | # endif |
| 1990 | # ifdef USE_PERL_ATOF |
| 1991 | " USE_PERL_ATOF" |
| 1992 | # endif |
| 1993 | # ifdef USE_SITECUSTOMIZE |
| 1994 | " USE_SITECUSTOMIZE" |
| 1995 | # endif |
| 1996 | ; |
| 1997 | PERL_UNUSED_ARG(cv); |
| 1998 | PERL_UNUSED_VAR(items); |
| 1999 | |
| 2000 | EXTEND(SP, entries); |
| 2001 | |
| 2002 | PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0))); |
| 2003 | PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options, |
| 2004 | sizeof(non_bincompat_options) - 1, SVs_TEMP)); |
| 2005 | |
| 2006 | #ifndef PERL_BUILD_DATE |
| 2007 | # ifdef __DATE__ |
| 2008 | # ifdef __TIME__ |
| 2009 | # define PERL_BUILD_DATE __DATE__ " " __TIME__ |
| 2010 | # else |
| 2011 | # define PERL_BUILD_DATE __DATE__ |
| 2012 | # endif |
| 2013 | # endif |
| 2014 | #endif |
| 2015 | |
| 2016 | #ifdef PERL_BUILD_DATE |
| 2017 | PUSHs(Perl_newSVpvn_flags(aTHX_ |
| 2018 | STR_WITH_LEN("Compiled at " PERL_BUILD_DATE), |
| 2019 | SVs_TEMP)); |
| 2020 | #else |
| 2021 | PUSHs(&PL_sv_undef); |
| 2022 | #endif |
| 2023 | |
| 2024 | for (i = 1; i <= local_patch_count; i++) { |
| 2025 | /* This will be an undef, if PL_localpatches[i] is NULL. */ |
| 2026 | PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0))); |
| 2027 | } |
| 2028 | |
| 2029 | XSRETURN(entries); |
| 2030 | } |
| 2031 | |
| 2032 | #define INCPUSH_UNSHIFT 0x01 |
| 2033 | #define INCPUSH_ADD_OLD_VERS 0x02 |
| 2034 | #define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04 |
| 2035 | #define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08 |
| 2036 | #define INCPUSH_NOT_BASEDIR 0x10 |
| 2037 | #define INCPUSH_CAN_RELOCATE 0x20 |
| 2038 | #define INCPUSH_ADD_SUB_DIRS \ |
| 2039 | (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS) |
| 2040 | |
| 2041 | STATIC void * |
| 2042 | S_parse_body(pTHX_ char **env, XSINIT_t xsinit) |
| 2043 | { |
| 2044 | dVAR; |
| 2045 | PerlIO *rsfp; |
| 2046 | int argc = PL_origargc; |
| 2047 | char **argv = PL_origargv; |
| 2048 | const char *scriptname = NULL; |
| 2049 | bool dosearch = FALSE; |
| 2050 | char c; |
| 2051 | bool doextract = FALSE; |
| 2052 | const char *cddir = NULL; |
| 2053 | #ifdef USE_SITECUSTOMIZE |
| 2054 | bool minus_f = FALSE; |
| 2055 | #endif |
| 2056 | SV *linestr_sv = NULL; |
| 2057 | bool add_read_e_script = FALSE; |
| 2058 | U32 lex_start_flags = 0; |
| 2059 | |
| 2060 | PERL_SET_PHASE(PERL_PHASE_START); |
| 2061 | |
| 2062 | init_main_stash(); |
| 2063 | |
| 2064 | { |
| 2065 | const char *s; |
| 2066 | for (argc--,argv++; argc > 0; argc--,argv++) { |
| 2067 | if (argv[0][0] != '-' || !argv[0][1]) |
| 2068 | break; |
| 2069 | s = argv[0]+1; |
| 2070 | reswitch: |
| 2071 | switch ((c = *s)) { |
| 2072 | case 'C': |
| 2073 | #ifndef PERL_STRICT_CR |
| 2074 | case '\r': |
| 2075 | #endif |
| 2076 | case ' ': |
| 2077 | case '0': |
| 2078 | case 'F': |
| 2079 | case 'a': |
| 2080 | case 'c': |
| 2081 | case 'd': |
| 2082 | case 'D': |
| 2083 | case 'h': |
| 2084 | case 'i': |
| 2085 | case 'l': |
| 2086 | case 'M': |
| 2087 | case 'm': |
| 2088 | case 'n': |
| 2089 | case 'p': |
| 2090 | case 's': |
| 2091 | case 'u': |
| 2092 | case 'U': |
| 2093 | case 'v': |
| 2094 | case 'W': |
| 2095 | case 'X': |
| 2096 | case 'w': |
| 2097 | if ((s = moreswitches(s))) |
| 2098 | goto reswitch; |
| 2099 | break; |
| 2100 | |
| 2101 | case 't': |
| 2102 | #if defined(SILENT_NO_TAINT_SUPPORT) |
| 2103 | /* silently ignore */ |
| 2104 | #elif defined(NO_TAINT_SUPPORT) |
| 2105 | Perl_croak_nocontext("This perl was compiled without taint support. " |
| 2106 | "Cowardly refusing to run with -t or -T flags"); |
| 2107 | #else |
| 2108 | CHECK_MALLOC_TOO_LATE_FOR('t'); |
| 2109 | if( !TAINTING_get ) { |
| 2110 | TAINT_WARN_set(TRUE); |
| 2111 | TAINTING_set(TRUE); |
| 2112 | } |
| 2113 | #endif |
| 2114 | s++; |
| 2115 | goto reswitch; |
| 2116 | case 'T': |
| 2117 | #if defined(SILENT_NO_TAINT_SUPPORT) |
| 2118 | /* silently ignore */ |
| 2119 | #elif defined(NO_TAINT_SUPPORT) |
| 2120 | Perl_croak_nocontext("This perl was compiled without taint support. " |
| 2121 | "Cowardly refusing to run with -t or -T flags"); |
| 2122 | #else |
| 2123 | CHECK_MALLOC_TOO_LATE_FOR('T'); |
| 2124 | TAINTING_set(TRUE); |
| 2125 | TAINT_WARN_set(FALSE); |
| 2126 | #endif |
| 2127 | s++; |
| 2128 | goto reswitch; |
| 2129 | |
| 2130 | case 'E': |
| 2131 | PL_minus_E = TRUE; |
| 2132 | /* FALLTHROUGH */ |
| 2133 | case 'e': |
| 2134 | forbid_setid('e', FALSE); |
| 2135 | if (!PL_e_script) { |
| 2136 | PL_e_script = newSVpvs(""); |
| 2137 | add_read_e_script = TRUE; |
| 2138 | } |
| 2139 | if (*++s) |
| 2140 | sv_catpv(PL_e_script, s); |
| 2141 | else if (argv[1]) { |
| 2142 | sv_catpv(PL_e_script, argv[1]); |
| 2143 | argc--,argv++; |
| 2144 | } |
| 2145 | else |
| 2146 | Perl_croak(aTHX_ "No code specified for -%c", c); |
| 2147 | sv_catpvs(PL_e_script, "\n"); |
| 2148 | break; |
| 2149 | |
| 2150 | case 'f': |
| 2151 | #ifdef USE_SITECUSTOMIZE |
| 2152 | minus_f = TRUE; |
| 2153 | #endif |
| 2154 | s++; |
| 2155 | goto reswitch; |
| 2156 | |
| 2157 | case 'I': /* -I handled both here and in moreswitches() */ |
| 2158 | forbid_setid('I', FALSE); |
| 2159 | if (!*++s && (s=argv[1]) != NULL) { |
| 2160 | argc--,argv++; |
| 2161 | } |
| 2162 | if (s && *s) { |
| 2163 | STRLEN len = strlen(s); |
| 2164 | incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS); |
| 2165 | } |
| 2166 | else |
| 2167 | Perl_croak(aTHX_ "No directory specified for -I"); |
| 2168 | break; |
| 2169 | case 'S': |
| 2170 | forbid_setid('S', FALSE); |
| 2171 | dosearch = TRUE; |
| 2172 | s++; |
| 2173 | goto reswitch; |
| 2174 | case 'V': |
| 2175 | { |
| 2176 | SV *opts_prog; |
| 2177 | |
| 2178 | if (*++s != ':') { |
| 2179 | opts_prog = newSVpvs("use Config; Config::_V()"); |
| 2180 | } |
| 2181 | else { |
| 2182 | ++s; |
| 2183 | opts_prog = Perl_newSVpvf(aTHX_ |
| 2184 | "use Config; Config::config_vars(qw%c%s%c)", |
| 2185 | 0, s, 0); |
| 2186 | s += strlen(s); |
| 2187 | } |
| 2188 | Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog); |
| 2189 | /* don't look for script or read stdin */ |
| 2190 | scriptname = BIT_BUCKET; |
| 2191 | goto reswitch; |
| 2192 | } |
| 2193 | case 'x': |
| 2194 | doextract = TRUE; |
| 2195 | s++; |
| 2196 | if (*s) |
| 2197 | cddir = s; |
| 2198 | break; |
| 2199 | case 0: |
| 2200 | break; |
| 2201 | case '-': |
| 2202 | if (!*++s || isSPACE(*s)) { |
| 2203 | argc--,argv++; |
| 2204 | goto switch_end; |
| 2205 | } |
| 2206 | /* catch use of gnu style long options. |
| 2207 | Both of these exit immediately. */ |
| 2208 | if (strEQ(s, "version")) |
| 2209 | minus_v(); |
| 2210 | if (strEQ(s, "help")) |
| 2211 | usage(); |
| 2212 | s--; |
| 2213 | /* FALLTHROUGH */ |
| 2214 | default: |
| 2215 | Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s); |
| 2216 | } |
| 2217 | } |
| 2218 | } |
| 2219 | |
| 2220 | switch_end: |
| 2221 | |
| 2222 | { |
| 2223 | char *s; |
| 2224 | |
| 2225 | if ( |
| 2226 | #ifndef SECURE_INTERNAL_GETENV |
| 2227 | !TAINTING_get && |
| 2228 | #endif |
| 2229 | (s = PerlEnv_getenv("PERL5OPT"))) |
| 2230 | { |
| 2231 | /* s points to static memory in getenv(), which may be overwritten at |
| 2232 | * any time; use a mortal copy instead */ |
| 2233 | s = SvPVX(sv_2mortal(newSVpv(s, 0))); |
| 2234 | |
| 2235 | while (isSPACE(*s)) |
| 2236 | s++; |
| 2237 | if (*s == '-' && *(s+1) == 'T') { |
| 2238 | #if defined(SILENT_NO_TAINT_SUPPORT) |
| 2239 | /* silently ignore */ |
| 2240 | #elif defined(NO_TAINT_SUPPORT) |
| 2241 | Perl_croak_nocontext("This perl was compiled without taint support. " |
| 2242 | "Cowardly refusing to run with -t or -T flags"); |
| 2243 | #else |
| 2244 | CHECK_MALLOC_TOO_LATE_FOR('T'); |
| 2245 | TAINTING_set(TRUE); |
| 2246 | TAINT_WARN_set(FALSE); |
| 2247 | #endif |
| 2248 | } |
| 2249 | else { |
| 2250 | char *popt_copy = NULL; |
| 2251 | while (s && *s) { |
| 2252 | const char *d; |
| 2253 | while (isSPACE(*s)) |
| 2254 | s++; |
| 2255 | if (*s == '-') { |
| 2256 | s++; |
| 2257 | if (isSPACE(*s)) |
| 2258 | continue; |
| 2259 | } |
| 2260 | d = s; |
| 2261 | if (!*s) |
| 2262 | break; |
| 2263 | if (!strchr("CDIMUdmtwW", *s)) |
| 2264 | Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s); |
| 2265 | while (++s && *s) { |
| 2266 | if (isSPACE(*s)) { |
| 2267 | if (!popt_copy) { |
| 2268 | popt_copy = SvPVX(sv_2mortal(newSVpv(d,0))); |
| 2269 | s = popt_copy + (s - d); |
| 2270 | d = popt_copy; |
| 2271 | } |
| 2272 | *s++ = '\0'; |
| 2273 | break; |
| 2274 | } |
| 2275 | } |
| 2276 | if (*d == 't') { |
| 2277 | #if defined(SILENT_NO_TAINT_SUPPORT) |
| 2278 | /* silently ignore */ |
| 2279 | #elif defined(NO_TAINT_SUPPORT) |
| 2280 | Perl_croak_nocontext("This perl was compiled without taint support. " |
| 2281 | "Cowardly refusing to run with -t or -T flags"); |
| 2282 | #else |
| 2283 | if( !TAINTING_get) { |
| 2284 | TAINT_WARN_set(TRUE); |
| 2285 | TAINTING_set(TRUE); |
| 2286 | } |
| 2287 | #endif |
| 2288 | } else { |
| 2289 | moreswitches(d); |
| 2290 | } |
| 2291 | } |
| 2292 | } |
| 2293 | } |
| 2294 | } |
| 2295 | |
| 2296 | #ifndef NO_PERL_INTERNAL_RAND_SEED |
| 2297 | /* If we're not set[ug]id, we might have honored |
| 2298 | PERL_INTERNAL_RAND_SEED in perl_construct(). |
| 2299 | At this point command-line options have been parsed, so if |
| 2300 | we're now tainting and not set[ug]id re-seed. |
| 2301 | This could possibly be wasteful if PERL_INTERNAL_RAND_SEED is invalid, |
| 2302 | but avoids duplicating the logic from perl_construct(). |
| 2303 | */ |
| 2304 | if (PL_tainting && |
| 2305 | PerlProc_getuid() == PerlProc_geteuid() && |
| 2306 | PerlProc_getgid() == PerlProc_getegid()) { |
| 2307 | Perl_drand48_init_r(&PL_internal_random_state, seed()); |
| 2308 | } |
| 2309 | #endif |
| 2310 | |
| 2311 | /* Set $^X early so that it can be used for relocatable paths in @INC */ |
| 2312 | /* and for SITELIB_EXP in USE_SITECUSTOMIZE */ |
| 2313 | assert (!TAINT_get); |
| 2314 | TAINT; |
| 2315 | set_caret_X(); |
| 2316 | TAINT_NOT; |
| 2317 | |
| 2318 | #if defined(USE_SITECUSTOMIZE) |
| 2319 | if (!minus_f) { |
| 2320 | /* The games with local $! are to avoid setting errno if there is no |
| 2321 | sitecustomize script. "q%c...%c", 0, ..., 0 becomes "q\0...\0", |
| 2322 | ie a q() operator with a NUL byte as a the delimiter. This avoids |
| 2323 | problems with pathnames containing (say) ' */ |
| 2324 | # ifdef PERL_IS_MINIPERL |
| 2325 | AV *const inc = GvAV(PL_incgv); |
| 2326 | SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL; |
| 2327 | |
| 2328 | if (inc0) { |
| 2329 | /* if lib/buildcustomize.pl exists, it should not fail. If it does, |
| 2330 | it should be reported immediately as a build failure. */ |
| 2331 | (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav, |
| 2332 | Perl_newSVpvf(aTHX_ |
| 2333 | "BEGIN { my $f = q%c%s%" SVf "/buildcustomize.pl%c; " |
| 2334 | "do {local $!; -f $f }" |
| 2335 | " and do $f || die $@ || qq '$f: $!' }", |
| 2336 | 0, (TAINTING_get ? "./" : ""), SVfARG(*inc0), 0)); |
| 2337 | } |
| 2338 | # else |
| 2339 | /* SITELIB_EXP is a function call on Win32. */ |
| 2340 | const char *const raw_sitelib = SITELIB_EXP; |
| 2341 | if (raw_sitelib) { |
| 2342 | /* process .../.. if PERL_RELOCATABLE_INC is defined */ |
| 2343 | SV *sitelib_sv = mayberelocate(raw_sitelib, strlen(raw_sitelib), |
| 2344 | INCPUSH_CAN_RELOCATE); |
| 2345 | const char *const sitelib = SvPVX(sitelib_sv); |
| 2346 | (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav, |
| 2347 | Perl_newSVpvf(aTHX_ |
| 2348 | "BEGIN { do {local $!; -f q%c%s/sitecustomize.pl%c} && do q%c%s/sitecustomize.pl%c }", |
| 2349 | 0, SVfARG(sitelib), 0, |
| 2350 | 0, SVfARG(sitelib), 0)); |
| 2351 | assert (SvREFCNT(sitelib_sv) == 1); |
| 2352 | SvREFCNT_dec(sitelib_sv); |
| 2353 | } |
| 2354 | # endif |
| 2355 | } |
| 2356 | #endif |
| 2357 | |
| 2358 | if (!scriptname) |
| 2359 | scriptname = argv[0]; |
| 2360 | if (PL_e_script) { |
| 2361 | argc++,argv--; |
| 2362 | scriptname = BIT_BUCKET; /* don't look for script or read stdin */ |
| 2363 | } |
| 2364 | else if (scriptname == NULL) { |
| 2365 | #ifdef MSDOS |
| 2366 | if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) ) |
| 2367 | moreswitches("h"); |
| 2368 | #endif |
| 2369 | scriptname = "-"; |
| 2370 | } |
| 2371 | |
| 2372 | assert (!TAINT_get); |
| 2373 | init_perllib(); |
| 2374 | |
| 2375 | { |
| 2376 | bool suidscript = FALSE; |
| 2377 | |
| 2378 | rsfp = open_script(scriptname, dosearch, &suidscript); |
| 2379 | if (!rsfp) { |
| 2380 | rsfp = PerlIO_stdin(); |
| 2381 | lex_start_flags = LEX_DONT_CLOSE_RSFP; |
| 2382 | } |
| 2383 | |
| 2384 | validate_suid(rsfp); |
| 2385 | |
| 2386 | #ifndef PERL_MICRO |
| 2387 | # if defined(SIGCHLD) || defined(SIGCLD) |
| 2388 | { |
| 2389 | # ifndef SIGCHLD |
| 2390 | # define SIGCHLD SIGCLD |
| 2391 | # endif |
| 2392 | Sighandler_t sigstate = rsignal_state(SIGCHLD); |
| 2393 | if (sigstate == (Sighandler_t) SIG_IGN) { |
| 2394 | Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL), |
| 2395 | "Can't ignore signal CHLD, forcing to default"); |
| 2396 | (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL); |
| 2397 | } |
| 2398 | } |
| 2399 | # endif |
| 2400 | #endif |
| 2401 | |
| 2402 | if (doextract) { |
| 2403 | |
| 2404 | /* This will croak if suidscript is true, as -x cannot be used with |
| 2405 | setuid scripts. */ |
| 2406 | forbid_setid('x', suidscript); |
| 2407 | /* Hence you can't get here if suidscript is true */ |
| 2408 | |
| 2409 | linestr_sv = newSV_type(SVt_PV); |
| 2410 | lex_start_flags |= LEX_START_COPIED; |
| 2411 | find_beginning(linestr_sv, rsfp); |
| 2412 | if (cddir && PerlDir_chdir( (char *)cddir ) < 0) |
| 2413 | Perl_croak(aTHX_ "Can't chdir to %s",cddir); |
| 2414 | } |
| 2415 | } |
| 2416 | |
| 2417 | PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV)); |
| 2418 | CvUNIQUE_on(PL_compcv); |
| 2419 | |
| 2420 | CvPADLIST_set(PL_compcv, pad_new(0)); |
| 2421 | |
| 2422 | PL_isarev = newHV(); |
| 2423 | |
| 2424 | boot_core_PerlIO(); |
| 2425 | boot_core_UNIVERSAL(); |
| 2426 | boot_core_mro(); |
| 2427 | newXS("Internals::V", S_Internals_V, __FILE__); |
| 2428 | |
| 2429 | if (xsinit) |
| 2430 | (*xsinit)(aTHX); /* in case linked C routines want magical variables */ |
| 2431 | #ifndef PERL_MICRO |
| 2432 | #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(SYMBIAN) |
| 2433 | init_os_extras(); |
| 2434 | #endif |
| 2435 | #endif |
| 2436 | |
| 2437 | #ifdef USE_SOCKS |
| 2438 | # ifdef HAS_SOCKS5_INIT |
| 2439 | socks5_init(argv[0]); |
| 2440 | # else |
| 2441 | SOCKSinit(argv[0]); |
| 2442 | # endif |
| 2443 | #endif |
| 2444 | |
| 2445 | init_predump_symbols(); |
| 2446 | /* init_postdump_symbols not currently designed to be called */ |
| 2447 | /* more than once (ENV isn't cleared first, for example) */ |
| 2448 | /* But running with -u leaves %ENV & @ARGV undefined! XXX */ |
| 2449 | if (!PL_do_undump) |
| 2450 | init_postdump_symbols(argc,argv,env); |
| 2451 | |
| 2452 | /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE}, |
| 2453 | * or explicitly in some platforms. |
| 2454 | * PL_utf8locale is conditionally turned on by |
| 2455 | * locale.c:Perl_init_i18nl10n() if the environment |
| 2456 | * look like the user wants to use UTF-8. */ |
| 2457 | #if defined(__SYMBIAN32__) |
| 2458 | PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */ |
| 2459 | #endif |
| 2460 | # ifndef PERL_IS_MINIPERL |
| 2461 | if (PL_unicode) { |
| 2462 | /* Requires init_predump_symbols(). */ |
| 2463 | if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) { |
| 2464 | IO* io; |
| 2465 | PerlIO* fp; |
| 2466 | SV* sv; |
| 2467 | |
| 2468 | /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR |
| 2469 | * and the default open disciplines. */ |
| 2470 | if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) && |
| 2471 | PL_stdingv && (io = GvIO(PL_stdingv)) && |
| 2472 | (fp = IoIFP(io))) |
| 2473 | PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8"); |
| 2474 | if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) && |
| 2475 | PL_defoutgv && (io = GvIO(PL_defoutgv)) && |
| 2476 | (fp = IoOFP(io))) |
| 2477 | PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8"); |
| 2478 | if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) && |
| 2479 | PL_stderrgv && (io = GvIO(PL_stderrgv)) && |
| 2480 | (fp = IoOFP(io))) |
| 2481 | PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8"); |
| 2482 | if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) && |
| 2483 | (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL, |
| 2484 | SVt_PV)))) { |
| 2485 | U32 in = PL_unicode & PERL_UNICODE_IN_FLAG; |
| 2486 | U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG; |
| 2487 | if (in) { |
| 2488 | if (out) |
| 2489 | sv_setpvs(sv, ":utf8\0:utf8"); |
| 2490 | else |
| 2491 | sv_setpvs(sv, ":utf8\0"); |
| 2492 | } |
| 2493 | else if (out) |
| 2494 | sv_setpvs(sv, "\0:utf8"); |
| 2495 | SvSETMAGIC(sv); |
| 2496 | } |
| 2497 | } |
| 2498 | } |
| 2499 | #endif |
| 2500 | |
| 2501 | { |
| 2502 | const char *s; |
| 2503 | if ((s = PerlEnv_getenv("PERL_SIGNALS"))) { |
| 2504 | if (strEQ(s, "unsafe")) |
| 2505 | PL_signals |= PERL_SIGNALS_UNSAFE_FLAG; |
| 2506 | else if (strEQ(s, "safe")) |
| 2507 | PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG; |
| 2508 | else |
| 2509 | Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s); |
| 2510 | } |
| 2511 | } |
| 2512 | |
| 2513 | |
| 2514 | lex_start(linestr_sv, rsfp, lex_start_flags); |
| 2515 | SvREFCNT_dec(linestr_sv); |
| 2516 | |
| 2517 | PL_subname = newSVpvs("main"); |
| 2518 | |
| 2519 | if (add_read_e_script) |
| 2520 | filter_add(read_e_script, NULL); |
| 2521 | |
| 2522 | /* now parse the script */ |
| 2523 | |
| 2524 | SETERRNO(0,SS_NORMAL); |
| 2525 | if (yyparse(GRAMPROG) || PL_parser->error_count) { |
| 2526 | abort_execution("", PL_origfilename); |
| 2527 | } |
| 2528 | CopLINE_set(PL_curcop, 0); |
| 2529 | SET_CURSTASH(PL_defstash); |
| 2530 | if (PL_e_script) { |
| 2531 | SvREFCNT_dec(PL_e_script); |
| 2532 | PL_e_script = NULL; |
| 2533 | } |
| 2534 | |
| 2535 | if (PL_do_undump) |
| 2536 | my_unexec(); |
| 2537 | |
| 2538 | if (isWARN_ONCE) { |
| 2539 | SAVECOPFILE(PL_curcop); |
| 2540 | SAVECOPLINE(PL_curcop); |
| 2541 | gv_check(PL_defstash); |
| 2542 | } |
| 2543 | |
| 2544 | LEAVE; |
| 2545 | FREETMPS; |
| 2546 | |
| 2547 | #ifdef MYMALLOC |
| 2548 | { |
| 2549 | const char *s; |
| 2550 | UV uv; |
| 2551 | s = PerlEnv_getenv("PERL_DEBUG_MSTATS"); |
| 2552 | if (s && grok_atoUV(s, &uv, NULL) && uv >= 2) |
| 2553 | dump_mstats("after compilation:"); |
| 2554 | } |
| 2555 | #endif |
| 2556 | |
| 2557 | ENTER; |
| 2558 | PL_restartjmpenv = NULL; |
| 2559 | PL_restartop = 0; |
| 2560 | return NULL; |
| 2561 | } |
| 2562 | |
| 2563 | /* |
| 2564 | =for apidoc Am|int|perl_run|PerlInterpreter *my_perl |
| 2565 | |
| 2566 | Tells a Perl interpreter to run its main program. See L<perlembed> |
| 2567 | for a tutorial. |
| 2568 | |
| 2569 | C<my_perl> points to the Perl interpreter. It must have been previously |
| 2570 | created through the use of L</perl_alloc> and L</perl_construct>, and |
| 2571 | initialised through L</perl_parse>. This function should not be called |
| 2572 | if L</perl_parse> returned a non-zero value, indicating a failure in |
| 2573 | initialisation or compilation. |
| 2574 | |
| 2575 | This function executes code in C<INIT> blocks, and then executes the |
| 2576 | main program. The code to be executed is that established by the prior |
| 2577 | call to L</perl_parse>. If the interpreter's C<PL_exit_flags> word |
| 2578 | does not have the C<PERL_EXIT_DESTRUCT_END> flag set, then this function |
| 2579 | will also execute code in C<END> blocks. If it is desired to make any |
| 2580 | further use of the interpreter after calling this function, then C<END> |
| 2581 | blocks should be postponed to L</perl_destruct> time by setting that flag. |
| 2582 | |
| 2583 | Returns an integer of slightly tricky interpretation. The correct use |
| 2584 | of the return value is as a truth value indicating whether the program |
| 2585 | terminated non-locally. If zero is returned, this indicates that |
| 2586 | the program ran to completion, and it is safe to make other use of the |
| 2587 | interpreter (provided that the C<PERL_EXIT_DESTRUCT_END> flag was set as |
| 2588 | described above). If a non-zero value is returned, this indicates that |
| 2589 | the interpreter wants to terminate early. The interpreter should not be |
| 2590 | just abandoned because of this desire to terminate; the caller should |
| 2591 | proceed to shut the interpreter down cleanly with L</perl_destruct> |
| 2592 | and free it with L</perl_free>. |
| 2593 | |
| 2594 | For historical reasons, the non-zero return value also attempts to |
| 2595 | be a suitable value to pass to the C library function C<exit> (or to |
| 2596 | return from C<main>), to serve as an exit code indicating the nature of |
| 2597 | the way the program terminated. However, this isn't portable, due to |
| 2598 | differing exit code conventions. An attempt is made to return an exit |
| 2599 | code of the type required by the host operating system, but because |
| 2600 | it is constrained to be non-zero, it is not necessarily possible to |
| 2601 | indicate every type of exit. It is only reliable on Unix, where a zero |
| 2602 | exit code can be augmented with a set bit that will be ignored. In any |
| 2603 | case, this function is not the correct place to acquire an exit code: |
| 2604 | one should get that from L</perl_destruct>. |
| 2605 | |
| 2606 | =cut |
| 2607 | */ |
| 2608 | |
| 2609 | int |
| 2610 | perl_run(pTHXx) |
| 2611 | { |
| 2612 | I32 oldscope; |
| 2613 | int ret = 0, exit_called = 0; |
| 2614 | dJMPENV; |
| 2615 | |
| 2616 | PERL_ARGS_ASSERT_PERL_RUN; |
| 2617 | #ifndef MULTIPLICITY |
| 2618 | PERL_UNUSED_ARG(my_perl); |
| 2619 | #endif |
| 2620 | |
| 2621 | oldscope = PL_scopestack_ix; |
| 2622 | #ifdef VMS |
| 2623 | VMSISH_HUSHED = 0; |
| 2624 | #endif |
| 2625 | |
| 2626 | JMPENV_PUSH(ret); |
| 2627 | switch (ret) { |
| 2628 | case 1: |
| 2629 | cxstack_ix = -1; /* start context stack again */ |
| 2630 | goto redo_body; |
| 2631 | case 0: /* normal completion */ |
| 2632 | redo_body: |
| 2633 | run_body(oldscope); |
| 2634 | goto handle_exit; |
| 2635 | case 2: /* my_exit() */ |
| 2636 | exit_called = 1; |
| 2637 | handle_exit: |
| 2638 | while (PL_scopestack_ix > oldscope) |
| 2639 | LEAVE; |
| 2640 | FREETMPS; |
| 2641 | SET_CURSTASH(PL_defstash); |
| 2642 | if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) && |
| 2643 | PL_endav && !PL_minus_c) { |
| 2644 | PERL_SET_PHASE(PERL_PHASE_END); |
| 2645 | call_list(oldscope, PL_endav); |
| 2646 | } |
| 2647 | #ifdef MYMALLOC |
| 2648 | if (PerlEnv_getenv("PERL_DEBUG_MSTATS")) |
| 2649 | dump_mstats("after execution: "); |
| 2650 | #endif |
| 2651 | if (exit_called) { |
| 2652 | ret = STATUS_EXIT; |
| 2653 | if (ret == 0) ret = 0x100; |
| 2654 | } else { |
| 2655 | ret = 0; |
| 2656 | } |
| 2657 | break; |
| 2658 | case 3: |
| 2659 | if (PL_restartop) { |
| 2660 | POPSTACK_TO(PL_mainstack); |
| 2661 | goto redo_body; |
| 2662 | } |
| 2663 | PerlIO_printf(Perl_error_log, "panic: restartop in perl_run\n"); |
| 2664 | FREETMPS; |
| 2665 | ret = 1; |
| 2666 | break; |
| 2667 | } |
| 2668 | |
| 2669 | JMPENV_POP; |
| 2670 | return ret; |
| 2671 | } |
| 2672 | |
| 2673 | STATIC void |
| 2674 | S_run_body(pTHX_ I32 oldscope) |
| 2675 | { |
| 2676 | DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support (0x%x).\n", |
| 2677 | PL_sawampersand ? "Enabling" : "Omitting", |
| 2678 | (unsigned int)(PL_sawampersand))); |
| 2679 | |
| 2680 | if (!PL_restartop) { |
| 2681 | #ifdef DEBUGGING |
| 2682 | if (DEBUG_x_TEST || DEBUG_B_TEST) |
| 2683 | dump_all_perl(!DEBUG_B_TEST); |
| 2684 | if (!DEBUG_q_TEST) |
| 2685 | PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n")); |
| 2686 | #endif |
| 2687 | |
| 2688 | if (PL_minus_c) { |
| 2689 | PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename); |
| 2690 | my_exit(0); |
| 2691 | } |
| 2692 | if (PERLDB_SINGLE && PL_DBsingle) |
| 2693 | PL_DBsingle_iv = 1; |
| 2694 | if (PL_initav) { |
| 2695 | PERL_SET_PHASE(PERL_PHASE_INIT); |
| 2696 | call_list(oldscope, PL_initav); |
| 2697 | } |
| 2698 | #ifdef PERL_DEBUG_READONLY_OPS |
| 2699 | if (PL_main_root && PL_main_root->op_slabbed) |
| 2700 | Slab_to_ro(OpSLAB(PL_main_root)); |
| 2701 | #endif |
| 2702 | } |
| 2703 | |
| 2704 | /* do it */ |
| 2705 | |
| 2706 | PERL_SET_PHASE(PERL_PHASE_RUN); |
| 2707 | |
| 2708 | if (PL_restartop) { |
| 2709 | PL_restartjmpenv = NULL; |
| 2710 | PL_op = PL_restartop; |
| 2711 | PL_restartop = 0; |
| 2712 | CALLRUNOPS(aTHX); |
| 2713 | } |
| 2714 | else if (PL_main_start) { |
| 2715 | CvDEPTH(PL_main_cv) = 1; |
| 2716 | PL_op = PL_main_start; |
| 2717 | CALLRUNOPS(aTHX); |
| 2718 | } |
| 2719 | my_exit(0); |
| 2720 | NOT_REACHED; /* NOTREACHED */ |
| 2721 | } |
| 2722 | |
| 2723 | /* |
| 2724 | =head1 SV Manipulation Functions |
| 2725 | |
| 2726 | =for apidoc p||get_sv |
| 2727 | |
| 2728 | Returns the SV of the specified Perl scalar. C<flags> are passed to |
| 2729 | C<gv_fetchpv>. If C<GV_ADD> is set and the |
| 2730 | Perl variable does not exist then it will be created. If C<flags> is zero |
| 2731 | and the variable does not exist then NULL is returned. |
| 2732 | |
| 2733 | =cut |
| 2734 | */ |
| 2735 | |
| 2736 | SV* |
| 2737 | Perl_get_sv(pTHX_ const char *name, I32 flags) |
| 2738 | { |
| 2739 | GV *gv; |
| 2740 | |
| 2741 | PERL_ARGS_ASSERT_GET_SV; |
| 2742 | |
| 2743 | gv = gv_fetchpv(name, flags, SVt_PV); |
| 2744 | if (gv) |
| 2745 | return GvSV(gv); |
| 2746 | return NULL; |
| 2747 | } |
| 2748 | |
| 2749 | /* |
| 2750 | =head1 Array Manipulation Functions |
| 2751 | |
| 2752 | =for apidoc p||get_av |
| 2753 | |
| 2754 | Returns the AV of the specified Perl global or package array with the given |
| 2755 | name (so it won't work on lexical variables). C<flags> are passed |
| 2756 | to C<gv_fetchpv>. If C<GV_ADD> is set and the |
| 2757 | Perl variable does not exist then it will be created. If C<flags> is zero |
| 2758 | and the variable does not exist then NULL is returned. |
| 2759 | |
| 2760 | Perl equivalent: C<@{"$name"}>. |
| 2761 | |
| 2762 | =cut |
| 2763 | */ |
| 2764 | |
| 2765 | AV* |
| 2766 | Perl_get_av(pTHX_ const char *name, I32 flags) |
| 2767 | { |
| 2768 | GV* const gv = gv_fetchpv(name, flags, SVt_PVAV); |
| 2769 | |
| 2770 | PERL_ARGS_ASSERT_GET_AV; |
| 2771 | |
| 2772 | if (flags) |
| 2773 | return GvAVn(gv); |
| 2774 | if (gv) |
| 2775 | return GvAV(gv); |
| 2776 | return NULL; |
| 2777 | } |
| 2778 | |
| 2779 | /* |
| 2780 | =head1 Hash Manipulation Functions |
| 2781 | |
| 2782 | =for apidoc p||get_hv |
| 2783 | |
| 2784 | Returns the HV of the specified Perl hash. C<flags> are passed to |
| 2785 | C<gv_fetchpv>. If C<GV_ADD> is set and the |
| 2786 | Perl variable does not exist then it will be created. If C<flags> is zero |
| 2787 | and the variable does not exist then C<NULL> is returned. |
| 2788 | |
| 2789 | =cut |
| 2790 | */ |
| 2791 | |
| 2792 | HV* |
| 2793 | Perl_get_hv(pTHX_ const char *name, I32 flags) |
| 2794 | { |
| 2795 | GV* const gv = gv_fetchpv(name, flags, SVt_PVHV); |
| 2796 | |
| 2797 | PERL_ARGS_ASSERT_GET_HV; |
| 2798 | |
| 2799 | if (flags) |
| 2800 | return GvHVn(gv); |
| 2801 | if (gv) |
| 2802 | return GvHV(gv); |
| 2803 | return NULL; |
| 2804 | } |
| 2805 | |
| 2806 | /* |
| 2807 | =head1 CV Manipulation Functions |
| 2808 | |
| 2809 | =for apidoc p||get_cvn_flags |
| 2810 | |
| 2811 | Returns the CV of the specified Perl subroutine. C<flags> are passed to |
| 2812 | C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not |
| 2813 | exist then it will be declared (which has the same effect as saying |
| 2814 | C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist |
| 2815 | then NULL is returned. |
| 2816 | |
| 2817 | =for apidoc p||get_cv |
| 2818 | |
| 2819 | Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>. |
| 2820 | |
| 2821 | =cut |
| 2822 | */ |
| 2823 | |
| 2824 | CV* |
| 2825 | Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags) |
| 2826 | { |
| 2827 | GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV); |
| 2828 | |
| 2829 | PERL_ARGS_ASSERT_GET_CVN_FLAGS; |
| 2830 | |
| 2831 | if (gv && UNLIKELY(SvROK(gv)) && SvTYPE(SvRV((SV *)gv)) == SVt_PVCV) |
| 2832 | return (CV*)SvRV((SV *)gv); |
| 2833 | |
| 2834 | /* XXX this is probably not what they think they're getting. |
| 2835 | * It has the same effect as "sub name;", i.e. just a forward |
| 2836 | * declaration! */ |
| 2837 | if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) { |
| 2838 | return newSTUB(gv,0); |
| 2839 | } |
| 2840 | if (gv) |
| 2841 | return GvCVu(gv); |
| 2842 | return NULL; |
| 2843 | } |
| 2844 | |
| 2845 | /* Nothing in core calls this now, but we can't replace it with a macro and |
| 2846 | move it to mathoms.c as a macro would evaluate name twice. */ |
| 2847 | CV* |
| 2848 | Perl_get_cv(pTHX_ const char *name, I32 flags) |
| 2849 | { |
| 2850 | PERL_ARGS_ASSERT_GET_CV; |
| 2851 | |
| 2852 | return get_cvn_flags(name, strlen(name), flags); |
| 2853 | } |
| 2854 | |
| 2855 | /* Be sure to refetch the stack pointer after calling these routines. */ |
| 2856 | |
| 2857 | /* |
| 2858 | |
| 2859 | =head1 Callback Functions |
| 2860 | |
| 2861 | =for apidoc p||call_argv |
| 2862 | |
| 2863 | Performs a callback to the specified named and package-scoped Perl subroutine |
| 2864 | with C<argv> (a C<NULL>-terminated array of strings) as arguments. See |
| 2865 | L<perlcall>. |
| 2866 | |
| 2867 | Approximate Perl equivalent: C<&{"$sub_name"}(@$argv)>. |
| 2868 | |
| 2869 | =cut |
| 2870 | */ |
| 2871 | |
| 2872 | I32 |
| 2873 | Perl_call_argv(pTHX_ const char *sub_name, I32 flags, char **argv) |
| 2874 | |
| 2875 | /* See G_* flags in cop.h */ |
| 2876 | /* null terminated arg list */ |
| 2877 | { |
| 2878 | dSP; |
| 2879 | |
| 2880 | PERL_ARGS_ASSERT_CALL_ARGV; |
| 2881 | |
| 2882 | PUSHMARK(SP); |
| 2883 | while (*argv) { |
| 2884 | mXPUSHs(newSVpv(*argv,0)); |
| 2885 | argv++; |
| 2886 | } |
| 2887 | PUTBACK; |
| 2888 | return call_pv(sub_name, flags); |
| 2889 | } |
| 2890 | |
| 2891 | /* |
| 2892 | =for apidoc p||call_pv |
| 2893 | |
| 2894 | Performs a callback to the specified Perl sub. See L<perlcall>. |
| 2895 | |
| 2896 | =cut |
| 2897 | */ |
| 2898 | |
| 2899 | I32 |
| 2900 | Perl_call_pv(pTHX_ const char *sub_name, I32 flags) |
| 2901 | /* name of the subroutine */ |
| 2902 | /* See G_* flags in cop.h */ |
| 2903 | { |
| 2904 | PERL_ARGS_ASSERT_CALL_PV; |
| 2905 | |
| 2906 | return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags); |
| 2907 | } |
| 2908 | |
| 2909 | /* |
| 2910 | =for apidoc p||call_method |
| 2911 | |
| 2912 | Performs a callback to the specified Perl method. The blessed object must |
| 2913 | be on the stack. See L<perlcall>. |
| 2914 | |
| 2915 | =cut |
| 2916 | */ |
| 2917 | |
| 2918 | I32 |
| 2919 | Perl_call_method(pTHX_ const char *methname, I32 flags) |
| 2920 | /* name of the subroutine */ |
| 2921 | /* See G_* flags in cop.h */ |
| 2922 | { |
| 2923 | STRLEN len; |
| 2924 | SV* sv; |
| 2925 | PERL_ARGS_ASSERT_CALL_METHOD; |
| 2926 | |
| 2927 | len = strlen(methname); |
| 2928 | sv = flags & G_METHOD_NAMED |
| 2929 | ? sv_2mortal(newSVpvn_share(methname, len,0)) |
| 2930 | : newSVpvn_flags(methname, len, SVs_TEMP); |
| 2931 | |
| 2932 | return call_sv(sv, flags | G_METHOD); |
| 2933 | } |
| 2934 | |
| 2935 | /* May be called with any of a CV, a GV, or an SV containing the name. */ |
| 2936 | /* |
| 2937 | =for apidoc p||call_sv |
| 2938 | |
| 2939 | Performs a callback to the Perl sub specified by the SV. |
| 2940 | |
| 2941 | If neither the C<G_METHOD> nor C<G_METHOD_NAMED> flag is supplied, the |
| 2942 | SV may be any of a CV, a GV, a reference to a CV, a reference to a GV |
| 2943 | or C<SvPV(sv)> will be used as the name of the sub to call. |
| 2944 | |
| 2945 | If the C<G_METHOD> flag is supplied, the SV may be a reference to a CV or |
| 2946 | C<SvPV(sv)> will be used as the name of the method to call. |
| 2947 | |
| 2948 | If the C<G_METHOD_NAMED> flag is supplied, C<SvPV(sv)> will be used as |
| 2949 | the name of the method to call. |
| 2950 | |
| 2951 | Some other values are treated specially for internal use and should |
| 2952 | not be depended on. |
| 2953 | |
| 2954 | See L<perlcall>. |
| 2955 | |
| 2956 | =cut |
| 2957 | */ |
| 2958 | |
| 2959 | I32 |
| 2960 | Perl_call_sv(pTHX_ SV *sv, volatile I32 flags) |
| 2961 | /* See G_* flags in cop.h */ |
| 2962 | { |
| 2963 | dVAR; |
| 2964 | LOGOP myop; /* fake syntax tree node */ |
| 2965 | METHOP method_op; |
| 2966 | I32 oldmark; |
| 2967 | volatile I32 retval = 0; |
| 2968 | bool oldcatch = CATCH_GET; |
| 2969 | int ret; |
| 2970 | OP* const oldop = PL_op; |
| 2971 | dJMPENV; |
| 2972 | |
| 2973 | PERL_ARGS_ASSERT_CALL_SV; |
| 2974 | |
| 2975 | if (flags & G_DISCARD) { |
| 2976 | ENTER; |
| 2977 | SAVETMPS; |
| 2978 | } |
| 2979 | if (!(flags & G_WANT)) { |
| 2980 | /* Backwards compatibility - as G_SCALAR was 0, it could be omitted. |
| 2981 | */ |
| 2982 | flags |= G_SCALAR; |
| 2983 | } |
| 2984 | |
| 2985 | Zero(&myop, 1, LOGOP); |
| 2986 | if (!(flags & G_NOARGS)) |
| 2987 | myop.op_flags |= OPf_STACKED; |
| 2988 | myop.op_flags |= OP_GIMME_REVERSE(flags); |
| 2989 | SAVEOP(); |
| 2990 | PL_op = (OP*)&myop; |
| 2991 | |
| 2992 | if (!(flags & G_METHOD_NAMED)) { |
| 2993 | dSP; |
| 2994 | EXTEND(SP, 1); |
| 2995 | PUSHs(sv); |
| 2996 | PUTBACK; |
| 2997 | } |
| 2998 | oldmark = TOPMARK; |
| 2999 | |
| 3000 | if (PERLDB_SUB && PL_curstash != PL_debstash |
| 3001 | /* Handle first BEGIN of -d. */ |
| 3002 | && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub))) |
| 3003 | /* Try harder, since this may have been a sighandler, thus |
| 3004 | * curstash may be meaningless. */ |
| 3005 | && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash) |
| 3006 | && !(flags & G_NODEBUG)) |
| 3007 | myop.op_private |= OPpENTERSUB_DB; |
| 3008 | |
| 3009 | if (flags & (G_METHOD|G_METHOD_NAMED)) { |
| 3010 | Zero(&method_op, 1, METHOP); |
| 3011 | method_op.op_next = (OP*)&myop; |
| 3012 | PL_op = (OP*)&method_op; |
| 3013 | if ( flags & G_METHOD_NAMED ) { |
| 3014 | method_op.op_ppaddr = PL_ppaddr[OP_METHOD_NAMED]; |
| 3015 | method_op.op_type = OP_METHOD_NAMED; |
| 3016 | method_op.op_u.op_meth_sv = sv; |
| 3017 | } else { |
| 3018 | method_op.op_ppaddr = PL_ppaddr[OP_METHOD]; |
| 3019 | method_op.op_type = OP_METHOD; |
| 3020 | } |
| 3021 | myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB]; |
| 3022 | myop.op_type = OP_ENTERSUB; |
| 3023 | } |
| 3024 | |
| 3025 | if (!(flags & G_EVAL)) { |
| 3026 | CATCH_SET(TRUE); |
| 3027 | CALL_BODY_SUB((OP*)&myop); |
| 3028 | retval = PL_stack_sp - (PL_stack_base + oldmark); |
| 3029 | CATCH_SET(oldcatch); |
| 3030 | } |
| 3031 | else { |
| 3032 | I32 old_cxix; |
| 3033 | myop.op_other = (OP*)&myop; |
| 3034 | (void)POPMARK; |
| 3035 | old_cxix = cxstack_ix; |
| 3036 | create_eval_scope(NULL, flags|G_FAKINGEVAL); |
| 3037 | INCMARK; |
| 3038 | |
| 3039 | JMPENV_PUSH(ret); |
| 3040 | |
| 3041 | switch (ret) { |
| 3042 | case 0: |
| 3043 | redo_body: |
| 3044 | CALL_BODY_SUB((OP*)&myop); |
| 3045 | retval = PL_stack_sp - (PL_stack_base + oldmark); |
| 3046 | if (!(flags & G_KEEPERR)) { |
| 3047 | CLEAR_ERRSV(); |
| 3048 | } |
| 3049 | break; |
| 3050 | case 1: |
| 3051 | STATUS_ALL_FAILURE; |
| 3052 | /* FALLTHROUGH */ |
| 3053 | case 2: |
| 3054 | /* my_exit() was called */ |
| 3055 | SET_CURSTASH(PL_defstash); |
| 3056 | FREETMPS; |
| 3057 | JMPENV_POP; |
| 3058 | my_exit_jump(); |
| 3059 | NOT_REACHED; /* NOTREACHED */ |
| 3060 | case 3: |
| 3061 | if (PL_restartop) { |
| 3062 | PL_restartjmpenv = NULL; |
| 3063 | PL_op = PL_restartop; |
| 3064 | PL_restartop = 0; |
| 3065 | goto redo_body; |
| 3066 | } |
| 3067 | PL_stack_sp = PL_stack_base + oldmark; |
| 3068 | if ((flags & G_WANT) == G_ARRAY) |
| 3069 | retval = 0; |
| 3070 | else { |
| 3071 | retval = 1; |
| 3072 | *++PL_stack_sp = &PL_sv_undef; |
| 3073 | } |
| 3074 | break; |
| 3075 | } |
| 3076 | |
| 3077 | /* if we croaked, depending on how we croaked the eval scope |
| 3078 | * may or may not have already been popped */ |
| 3079 | if (cxstack_ix > old_cxix) { |
| 3080 | assert(cxstack_ix == old_cxix + 1); |
| 3081 | assert(CxTYPE(CX_CUR()) == CXt_EVAL); |
| 3082 | delete_eval_scope(); |
| 3083 | } |
| 3084 | JMPENV_POP; |
| 3085 | } |
| 3086 | |
| 3087 | if (flags & G_DISCARD) { |
| 3088 | PL_stack_sp = PL_stack_base + oldmark; |
| 3089 | retval = 0; |
| 3090 | FREETMPS; |
| 3091 | LEAVE; |
| 3092 | } |
| 3093 | PL_op = oldop; |
| 3094 | return retval; |
| 3095 | } |
| 3096 | |
| 3097 | /* Eval a string. The G_EVAL flag is always assumed. */ |
| 3098 | |
| 3099 | /* |
| 3100 | =for apidoc p||eval_sv |
| 3101 | |
| 3102 | Tells Perl to C<eval> the string in the SV. It supports the same flags |
| 3103 | as C<call_sv>, with the obvious exception of C<G_EVAL>. See L<perlcall>. |
| 3104 | |
| 3105 | =cut |
| 3106 | */ |
| 3107 | |
| 3108 | I32 |
| 3109 | Perl_eval_sv(pTHX_ SV *sv, I32 flags) |
| 3110 | |
| 3111 | /* See G_* flags in cop.h */ |
| 3112 | { |
| 3113 | dVAR; |
| 3114 | UNOP myop; /* fake syntax tree node */ |
| 3115 | volatile I32 oldmark; |
| 3116 | volatile I32 retval = 0; |
| 3117 | int ret; |
| 3118 | OP* const oldop = PL_op; |
| 3119 | dJMPENV; |
| 3120 | |
| 3121 | PERL_ARGS_ASSERT_EVAL_SV; |
| 3122 | |
| 3123 | if (flags & G_DISCARD) { |
| 3124 | ENTER; |
| 3125 | SAVETMPS; |
| 3126 | } |
| 3127 | |
| 3128 | SAVEOP(); |
| 3129 | PL_op = (OP*)&myop; |
| 3130 | Zero(&myop, 1, UNOP); |
| 3131 | { |
| 3132 | dSP; |
| 3133 | oldmark = SP - PL_stack_base; |
| 3134 | EXTEND(SP, 1); |
| 3135 | PUSHs(sv); |
| 3136 | PUTBACK; |
| 3137 | } |
| 3138 | |
| 3139 | if (!(flags & G_NOARGS)) |
| 3140 | myop.op_flags = OPf_STACKED; |
| 3141 | myop.op_type = OP_ENTEREVAL; |
| 3142 | myop.op_flags |= OP_GIMME_REVERSE(flags); |
| 3143 | if (flags & G_KEEPERR) |
| 3144 | myop.op_flags |= OPf_SPECIAL; |
| 3145 | |
| 3146 | if (flags & G_RE_REPARSING) |
| 3147 | myop.op_private = (OPpEVAL_COPHH | OPpEVAL_RE_REPARSING); |
| 3148 | |
| 3149 | /* fail now; otherwise we could fail after the JMPENV_PUSH but |
| 3150 | * before a cx_pusheval(), which corrupts the stack after a croak */ |
| 3151 | TAINT_PROPER("eval_sv()"); |
| 3152 | |
| 3153 | JMPENV_PUSH(ret); |
| 3154 | switch (ret) { |
| 3155 | case 0: |
| 3156 | redo_body: |
| 3157 | if (PL_op == (OP*)(&myop)) { |
| 3158 | PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX); |
| 3159 | if (!PL_op) |
| 3160 | goto fail; /* failed in compilation */ |
| 3161 | } |
| 3162 | CALLRUNOPS(aTHX); |
| 3163 | retval = PL_stack_sp - (PL_stack_base + oldmark); |
| 3164 | if (!(flags & G_KEEPERR)) { |
| 3165 | CLEAR_ERRSV(); |
| 3166 | } |
| 3167 | break; |
| 3168 | case 1: |
| 3169 | STATUS_ALL_FAILURE; |
| 3170 | /* FALLTHROUGH */ |
| 3171 | case 2: |
| 3172 | /* my_exit() was called */ |
| 3173 | SET_CURSTASH(PL_defstash); |
| 3174 | FREETMPS; |
| 3175 | JMPENV_POP; |
| 3176 | my_exit_jump(); |
| 3177 | NOT_REACHED; /* NOTREACHED */ |
| 3178 | case 3: |
| 3179 | if (PL_restartop) { |
| 3180 | PL_restartjmpenv = NULL; |
| 3181 | PL_op = PL_restartop; |
| 3182 | PL_restartop = 0; |
| 3183 | goto redo_body; |
| 3184 | } |
| 3185 | fail: |
| 3186 | PL_stack_sp = PL_stack_base + oldmark; |
| 3187 | if ((flags & G_WANT) == G_ARRAY) |
| 3188 | retval = 0; |
| 3189 | else { |
| 3190 | retval = 1; |
| 3191 | *++PL_stack_sp = &PL_sv_undef; |
| 3192 | } |
| 3193 | break; |
| 3194 | } |
| 3195 | |
| 3196 | JMPENV_POP; |
| 3197 | if (flags & G_DISCARD) { |
| 3198 | PL_stack_sp = PL_stack_base + oldmark; |
| 3199 | retval = 0; |
| 3200 | FREETMPS; |
| 3201 | LEAVE; |
| 3202 | } |
| 3203 | PL_op = oldop; |
| 3204 | return retval; |
| 3205 | } |
| 3206 | |
| 3207 | /* |
| 3208 | =for apidoc p||eval_pv |
| 3209 | |
| 3210 | Tells Perl to C<eval> the given string in scalar context and return an SV* result. |
| 3211 | |
| 3212 | =cut |
| 3213 | */ |
| 3214 | |
| 3215 | SV* |
| 3216 | Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error) |
| 3217 | { |
| 3218 | SV* sv = newSVpv(p, 0); |
| 3219 | |
| 3220 | PERL_ARGS_ASSERT_EVAL_PV; |
| 3221 | |
| 3222 | eval_sv(sv, G_SCALAR); |
| 3223 | SvREFCNT_dec(sv); |
| 3224 | |
| 3225 | { |
| 3226 | dSP; |
| 3227 | sv = POPs; |
| 3228 | PUTBACK; |
| 3229 | } |
| 3230 | |
| 3231 | /* just check empty string or undef? */ |
| 3232 | if (croak_on_error) { |
| 3233 | SV * const errsv = ERRSV; |
| 3234 | if(SvTRUE_NN(errsv)) |
| 3235 | /* replace with croak_sv? */ |
| 3236 | Perl_croak_nocontext("%s", SvPV_nolen_const(errsv)); |
| 3237 | } |
| 3238 | |
| 3239 | return sv; |
| 3240 | } |
| 3241 | |
| 3242 | /* Require a module. */ |
| 3243 | |
| 3244 | /* |
| 3245 | =head1 Embedding Functions |
| 3246 | |
| 3247 | =for apidoc p||require_pv |
| 3248 | |
| 3249 | Tells Perl to C<require> the file named by the string argument. It is |
| 3250 | analogous to the Perl code C<eval "require '$file'">. It's even |
| 3251 | implemented that way; consider using load_module instead. |
| 3252 | |
| 3253 | =cut */ |
| 3254 | |
| 3255 | void |
| 3256 | Perl_require_pv(pTHX_ const char *pv) |
| 3257 | { |
| 3258 | dSP; |
| 3259 | SV* sv; |
| 3260 | |
| 3261 | PERL_ARGS_ASSERT_REQUIRE_PV; |
| 3262 | |
| 3263 | PUSHSTACKi(PERLSI_REQUIRE); |
| 3264 | sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0); |
| 3265 | eval_sv(sv_2mortal(sv), G_DISCARD); |
| 3266 | POPSTACK; |
| 3267 | } |
| 3268 | |
| 3269 | STATIC void |
| 3270 | S_usage(pTHX) /* XXX move this out into a module ? */ |
| 3271 | { |
| 3272 | /* This message really ought to be max 23 lines. |
| 3273 | * Removed -h because the user already knows that option. Others? */ |
| 3274 | |
| 3275 | /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89 |
| 3276 | minimum of 509 character string literals. */ |
| 3277 | static const char * const usage_msg[] = { |
| 3278 | " -0[octal] specify record separator (\\0, if no argument)\n" |
| 3279 | " -a autosplit mode with -n or -p (splits $_ into @F)\n" |
| 3280 | " -C[number/list] enables the listed Unicode features\n" |
| 3281 | " -c check syntax only (runs BEGIN and CHECK blocks)\n" |
| 3282 | " -d[:debugger] run program under debugger\n" |
| 3283 | " -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n", |
| 3284 | " -e program one line of program (several -e's allowed, omit programfile)\n" |
| 3285 | " -E program like -e, but enables all optional features\n" |
| 3286 | " -f don't do $sitelib/sitecustomize.pl at startup\n" |
| 3287 | " -F/pattern/ split() pattern for -a switch (//'s are optional)\n" |
| 3288 | " -i[extension] edit <> files in place (makes backup if extension supplied)\n" |
| 3289 | " -Idirectory specify @INC/#include directory (several -I's allowed)\n", |
| 3290 | " -l[octal] enable line ending processing, specifies line terminator\n" |
| 3291 | " -[mM][-]module execute \"use/no module...\" before executing program\n" |
| 3292 | " -n assume \"while (<>) { ... }\" loop around program\n" |
| 3293 | " -p assume loop like -n but print line also, like sed\n" |
| 3294 | " -s enable rudimentary parsing for switches after programfile\n" |
| 3295 | " -S look for programfile using PATH environment variable\n", |
| 3296 | " -t enable tainting warnings\n" |
| 3297 | " -T enable tainting checks\n" |
| 3298 | " -u dump core after parsing program\n" |
| 3299 | " -U allow unsafe operations\n" |
| 3300 | " -v print version, patchlevel and license\n" |
| 3301 | " -V[:variable] print configuration summary (or a single Config.pm variable)\n", |
| 3302 | " -w enable many useful warnings\n" |
| 3303 | " -W enable all warnings\n" |
| 3304 | " -x[directory] ignore text before #!perl line (optionally cd to directory)\n" |
| 3305 | " -X disable all warnings\n" |
| 3306 | " \n" |
| 3307 | "Run 'perldoc perl' for more help with Perl.\n\n", |
| 3308 | NULL |
| 3309 | }; |
| 3310 | const char * const *p = usage_msg; |
| 3311 | PerlIO *out = PerlIO_stdout(); |
| 3312 | |
| 3313 | PerlIO_printf(out, |
| 3314 | "\nUsage: %s [switches] [--] [programfile] [arguments]\n", |
| 3315 | PL_origargv[0]); |
| 3316 | while (*p) |
| 3317 | PerlIO_puts(out, *p++); |
| 3318 | my_exit(0); |
| 3319 | } |
| 3320 | |
| 3321 | /* convert a string of -D options (or digits) into an int. |
| 3322 | * sets *s to point to the char after the options */ |
| 3323 | |
| 3324 | #ifdef DEBUGGING |
| 3325 | int |
| 3326 | Perl_get_debug_opts(pTHX_ const char **s, bool givehelp) |
| 3327 | { |
| 3328 | static const char * const usage_msgd[] = { |
| 3329 | " Debugging flag values: (see also -d)\n" |
| 3330 | " p Tokenizing and parsing (with v, displays parse stack)\n" |
| 3331 | " s Stack snapshots (with v, displays all stacks)\n" |
| 3332 | " l Context (loop) stack processing\n" |
| 3333 | " t Trace execution\n" |
| 3334 | " o Method and overloading resolution\n", |
| 3335 | " c String/numeric conversions\n" |
| 3336 | " P Print profiling info, source file input state\n" |
| 3337 | " m Memory and SV allocation\n" |
| 3338 | " f Format processing\n" |
| 3339 | " r Regular expression parsing and execution\n" |
| 3340 | " x Syntax tree dump\n", |
| 3341 | " u Tainting checks\n" |
| 3342 | " H Hash dump -- usurps values()\n" |
| 3343 | " X Scratchpad allocation\n" |
| 3344 | " D Cleaning up\n" |
| 3345 | " S Op slab allocation\n" |
| 3346 | " T Tokenising\n" |
| 3347 | " R Include reference counts of dumped variables (eg when using -Ds)\n", |
| 3348 | " J Do not s,t,P-debug (Jump over) opcodes within package DB\n" |
| 3349 | " v Verbose: use in conjunction with other flags\n" |
| 3350 | " C Copy On Write\n" |
| 3351 | " A Consistency checks on internal structures\n" |
| 3352 | " q quiet - currently only suppresses the 'EXECUTING' message\n" |
| 3353 | " M trace smart match resolution\n" |
| 3354 | " B dump suBroutine definitions, including special Blocks like BEGIN\n", |
| 3355 | " L trace some locale setting information--for Perl core development\n", |
| 3356 | " i trace PerlIO layer processing\n", |
| 3357 | NULL |
| 3358 | }; |
| 3359 | UV uv = 0; |
| 3360 | |
| 3361 | PERL_ARGS_ASSERT_GET_DEBUG_OPTS; |
| 3362 | |
| 3363 | if (isALPHA(**s)) { |
| 3364 | /* if adding extra options, remember to update DEBUG_MASK */ |
| 3365 | static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMBLi"; |
| 3366 | |
| 3367 | for (; isWORDCHAR(**s); (*s)++) { |
| 3368 | const char * const d = strchr(debopts,**s); |
| 3369 | if (d) |
| 3370 | uv |= 1 << (d - debopts); |
| 3371 | else if (ckWARN_d(WARN_DEBUGGING)) |
| 3372 | Perl_warner(aTHX_ packWARN(WARN_DEBUGGING), |
| 3373 | "invalid option -D%c, use -D'' to see choices\n", **s); |
| 3374 | } |
| 3375 | } |
| 3376 | else if (isDIGIT(**s)) { |
| 3377 | const char* e; |
| 3378 | if (grok_atoUV(*s, &uv, &e)) |
| 3379 | *s = e; |
| 3380 | for (; isWORDCHAR(**s); (*s)++) ; |
| 3381 | } |
| 3382 | else if (givehelp) { |
| 3383 | const char *const *p = usage_msgd; |
| 3384 | while (*p) PerlIO_puts(PerlIO_stdout(), *p++); |
| 3385 | } |
| 3386 | return (int)uv; /* ignore any UV->int conversion loss */ |
| 3387 | } |
| 3388 | #endif |
| 3389 | |
| 3390 | /* This routine handles any switches that can be given during run */ |
| 3391 | |
| 3392 | const char * |
| 3393 | Perl_moreswitches(pTHX_ const char *s) |
| 3394 | { |
| 3395 | dVAR; |
| 3396 | UV rschar; |
| 3397 | const char option = *s; /* used to remember option in -m/-M code */ |
| 3398 | |
| 3399 | PERL_ARGS_ASSERT_MORESWITCHES; |
| 3400 | |
| 3401 | switch (*s) { |
| 3402 | case '0': |
| 3403 | { |
| 3404 | I32 flags = 0; |
| 3405 | STRLEN numlen; |
| 3406 | |
| 3407 | SvREFCNT_dec(PL_rs); |
| 3408 | if (s[1] == 'x' && s[2]) { |
| 3409 | const char *e = s+=2; |
| 3410 | U8 *tmps; |
| 3411 | |
| 3412 | while (*e) |
| 3413 | e++; |
| 3414 | numlen = e - s; |
| 3415 | flags = PERL_SCAN_SILENT_ILLDIGIT; |
| 3416 | rschar = (U32)grok_hex(s, &numlen, &flags, NULL); |
| 3417 | if (s + numlen < e) { |
| 3418 | rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */ |
| 3419 | numlen = 0; |
| 3420 | s--; |
| 3421 | } |
| 3422 | PL_rs = newSVpvs(""); |
| 3423 | tmps = (U8*) SvGROW(PL_rs, (STRLEN)(UVCHR_SKIP(rschar) + 1)); |
| 3424 | uvchr_to_utf8(tmps, rschar); |
| 3425 | SvCUR_set(PL_rs, UVCHR_SKIP(rschar)); |
| 3426 | SvUTF8_on(PL_rs); |
| 3427 | } |
| 3428 | else { |
| 3429 | numlen = 4; |
| 3430 | rschar = (U32)grok_oct(s, &numlen, &flags, NULL); |
| 3431 | if (rschar & ~((U8)~0)) |
| 3432 | PL_rs = &PL_sv_undef; |
| 3433 | else if (!rschar && numlen >= 2) |
| 3434 | PL_rs = newSVpvs(""); |
| 3435 | else { |
| 3436 | char ch = (char)rschar; |
| 3437 | PL_rs = newSVpvn(&ch, 1); |
| 3438 | } |
| 3439 | } |
| 3440 | sv_setsv(get_sv("/", GV_ADD), PL_rs); |
| 3441 | return s + numlen; |
| 3442 | } |
| 3443 | case 'C': |
| 3444 | s++; |
| 3445 | PL_unicode = parse_unicode_opts( (const char **)&s ); |
| 3446 | if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG) |
| 3447 | PL_utf8cache = -1; |
| 3448 | return s; |
| 3449 | case 'F': |
| 3450 | PL_minus_a = TRUE; |
| 3451 | PL_minus_F = TRUE; |
| 3452 | PL_minus_n = TRUE; |
| 3453 | PL_splitstr = ++s; |
| 3454 | while (*s && !isSPACE(*s)) ++s; |
| 3455 | PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr); |
| 3456 | return s; |
| 3457 | case 'a': |
| 3458 | PL_minus_a = TRUE; |
| 3459 | PL_minus_n = TRUE; |
| 3460 | s++; |
| 3461 | return s; |
| 3462 | case 'c': |
| 3463 | PL_minus_c = TRUE; |
| 3464 | s++; |
| 3465 | return s; |
| 3466 | case 'd': |
| 3467 | forbid_setid('d', FALSE); |
| 3468 | s++; |
| 3469 | |
| 3470 | /* -dt indicates to the debugger that threads will be used */ |
| 3471 | if (*s == 't' && !isWORDCHAR(s[1])) { |
| 3472 | ++s; |
| 3473 | my_setenv("PERL5DB_THREADED", "1"); |
| 3474 | } |
| 3475 | |
| 3476 | /* The following permits -d:Mod to accepts arguments following an = |
| 3477 | in the fashion that -MSome::Mod does. */ |
| 3478 | if (*s == ':' || *s == '=') { |
| 3479 | const char *start; |
| 3480 | const char *end; |
| 3481 | SV *sv; |
| 3482 | |
| 3483 | if (*++s == '-') { |
| 3484 | ++s; |
| 3485 | sv = newSVpvs("no Devel::"); |
| 3486 | } else { |
| 3487 | sv = newSVpvs("use Devel::"); |
| 3488 | } |
| 3489 | |
| 3490 | start = s; |
| 3491 | end = s + strlen(s); |
| 3492 | |
| 3493 | /* We now allow -d:Module=Foo,Bar and -d:-Module */ |
| 3494 | while(isWORDCHAR(*s) || *s==':') ++s; |
| 3495 | if (*s != '=') |
| 3496 | sv_catpvn(sv, start, end - start); |
| 3497 | else { |
| 3498 | sv_catpvn(sv, start, s-start); |
| 3499 | /* Don't use NUL as q// delimiter here, this string goes in the |
| 3500 | * environment. */ |
| 3501 | Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s); |
| 3502 | } |
| 3503 | s = end; |
| 3504 | my_setenv("PERL5DB", SvPV_nolen_const(sv)); |
| 3505 | SvREFCNT_dec(sv); |
| 3506 | } |
| 3507 | if (!PL_perldb) { |
| 3508 | PL_perldb = PERLDB_ALL; |
| 3509 | init_debugger(); |
| 3510 | } |
| 3511 | return s; |
| 3512 | case 'D': |
| 3513 | { |
| 3514 | #ifdef DEBUGGING |
| 3515 | forbid_setid('D', FALSE); |
| 3516 | s++; |
| 3517 | PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG; |
| 3518 | #else /* !DEBUGGING */ |
| 3519 | if (ckWARN_d(WARN_DEBUGGING)) |
| 3520 | Perl_warner(aTHX_ packWARN(WARN_DEBUGGING), |
| 3521 | "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n"); |
| 3522 | for (s++; isWORDCHAR(*s); s++) ; |
| 3523 | #endif |
| 3524 | return s; |
| 3525 | NOT_REACHED; /* NOTREACHED */ |
| 3526 | } |
| 3527 | case 'h': |
| 3528 | usage(); |
| 3529 | NOT_REACHED; /* NOTREACHED */ |
| 3530 | |
| 3531 | case 'i': |
| 3532 | Safefree(PL_inplace); |
| 3533 | { |
| 3534 | const char * const start = ++s; |
| 3535 | while (*s && !isSPACE(*s)) |
| 3536 | ++s; |
| 3537 | |
| 3538 | PL_inplace = savepvn(start, s - start); |
| 3539 | } |
| 3540 | return s; |
| 3541 | case 'I': /* -I handled both here and in parse_body() */ |
| 3542 | forbid_setid('I', FALSE); |
| 3543 | ++s; |
| 3544 | while (*s && isSPACE(*s)) |
| 3545 | ++s; |
| 3546 | if (*s) { |
| 3547 | const char *e, *p; |
| 3548 | p = s; |
| 3549 | /* ignore trailing spaces (possibly followed by other switches) */ |
| 3550 | do { |
| 3551 | for (e = p; *e && !isSPACE(*e); e++) ; |
| 3552 | p = e; |
| 3553 | while (isSPACE(*p)) |
| 3554 | p++; |
| 3555 | } while (*p && *p != '-'); |
| 3556 | incpush(s, e-s, |
| 3557 | INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT); |
| 3558 | s = p; |
| 3559 | if (*s == '-') |
| 3560 | s++; |
| 3561 | } |
| 3562 | else |
| 3563 | Perl_croak(aTHX_ "No directory specified for -I"); |
| 3564 | return s; |
| 3565 | case 'l': |
| 3566 | PL_minus_l = TRUE; |
| 3567 | s++; |
| 3568 | if (PL_ors_sv) { |
| 3569 | SvREFCNT_dec(PL_ors_sv); |
| 3570 | PL_ors_sv = NULL; |
| 3571 | } |
| 3572 | if (isDIGIT(*s)) { |
| 3573 | I32 flags = 0; |
| 3574 | STRLEN numlen; |
| 3575 | PL_ors_sv = newSVpvs("\n"); |
| 3576 | numlen = 3 + (*s == '0'); |
| 3577 | *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL); |
| 3578 | s += numlen; |
| 3579 | } |
| 3580 | else { |
| 3581 | if (RsPARA(PL_rs)) { |
| 3582 | PL_ors_sv = newSVpvs("\n\n"); |
| 3583 | } |
| 3584 | else { |
| 3585 | PL_ors_sv = newSVsv(PL_rs); |
| 3586 | } |
| 3587 | } |
| 3588 | return s; |
| 3589 | case 'M': |
| 3590 | forbid_setid('M', FALSE); /* XXX ? */ |
| 3591 | /* FALLTHROUGH */ |
| 3592 | case 'm': |
| 3593 | forbid_setid('m', FALSE); /* XXX ? */ |
| 3594 | if (*++s) { |
| 3595 | const char *start; |
| 3596 | const char *end; |
| 3597 | SV *sv; |
| 3598 | const char *use = "use "; |
| 3599 | bool colon = FALSE; |
| 3600 | /* -M-foo == 'no foo' */ |
| 3601 | /* Leading space on " no " is deliberate, to make both |
| 3602 | possibilities the same length. */ |
| 3603 | if (*s == '-') { use = " no "; ++s; } |
| 3604 | sv = newSVpvn(use,4); |
| 3605 | start = s; |
| 3606 | /* We allow -M'Module qw(Foo Bar)' */ |
| 3607 | while(isWORDCHAR(*s) || *s==':') { |
| 3608 | if( *s++ == ':' ) { |
| 3609 | if( *s == ':' ) |
| 3610 | s++; |
| 3611 | else |
| 3612 | colon = TRUE; |
| 3613 | } |
| 3614 | } |
| 3615 | if (s == start) |
| 3616 | Perl_croak(aTHX_ "Module name required with -%c option", |
| 3617 | option); |
| 3618 | if (colon) |
| 3619 | Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: " |
| 3620 | "contains single ':'", |
| 3621 | (int)(s - start), start, option); |
| 3622 | end = s + strlen(s); |
| 3623 | if (*s != '=') { |
| 3624 | sv_catpvn(sv, start, end - start); |
| 3625 | if (option == 'm') { |
| 3626 | if (*s != '\0') |
| 3627 | Perl_croak(aTHX_ "Can't use '%c' after -mname", *s); |
| 3628 | sv_catpvs( sv, " ()"); |
| 3629 | } |
| 3630 | } else { |
| 3631 | sv_catpvn(sv, start, s-start); |
| 3632 | /* Use NUL as q''-delimiter. */ |
| 3633 | sv_catpvs(sv, " split(/,/,q\0"); |
| 3634 | ++s; |
| 3635 | sv_catpvn(sv, s, end - s); |
| 3636 | sv_catpvs(sv, "\0)"); |
| 3637 | } |
| 3638 | s = end; |
| 3639 | Perl_av_create_and_push(aTHX_ &PL_preambleav, sv); |
| 3640 | } |
| 3641 | else |
| 3642 | Perl_croak(aTHX_ "Missing argument to -%c", option); |
| 3643 | return s; |
| 3644 | case 'n': |
| 3645 | PL_minus_n = TRUE; |
| 3646 | s++; |
| 3647 | return s; |
| 3648 | case 'p': |
| 3649 | PL_minus_p = TRUE; |
| 3650 | s++; |
| 3651 | return s; |
| 3652 | case 's': |
| 3653 | forbid_setid('s', FALSE); |
| 3654 | PL_doswitches = TRUE; |
| 3655 | s++; |
| 3656 | return s; |
| 3657 | case 't': |
| 3658 | case 'T': |
| 3659 | #if defined(SILENT_NO_TAINT_SUPPORT) |
| 3660 | /* silently ignore */ |
| 3661 | #elif defined(NO_TAINT_SUPPORT) |
| 3662 | Perl_croak_nocontext("This perl was compiled without taint support. " |
| 3663 | "Cowardly refusing to run with -t or -T flags"); |
| 3664 | #else |
| 3665 | if (!TAINTING_get) |
| 3666 | TOO_LATE_FOR(*s); |
| 3667 | #endif |
| 3668 | s++; |
| 3669 | return s; |
| 3670 | case 'u': |
| 3671 | PL_do_undump = TRUE; |
| 3672 | s++; |
| 3673 | return s; |
| 3674 | case 'U': |
| 3675 | PL_unsafe = TRUE; |
| 3676 | s++; |
| 3677 | return s; |
| 3678 | case 'v': |
| 3679 | minus_v(); |
| 3680 | case 'w': |
| 3681 | if (! (PL_dowarn & G_WARN_ALL_MASK)) { |
| 3682 | PL_dowarn |= G_WARN_ON; |
| 3683 | } |
| 3684 | s++; |
| 3685 | return s; |
| 3686 | case 'W': |
| 3687 | PL_dowarn = G_WARN_ALL_ON|G_WARN_ON; |
| 3688 | if (!specialWARN(PL_compiling.cop_warnings)) |
| 3689 | PerlMemShared_free(PL_compiling.cop_warnings); |
| 3690 | PL_compiling.cop_warnings = pWARN_ALL ; |
| 3691 | s++; |
| 3692 | return s; |
| 3693 | case 'X': |
| 3694 | PL_dowarn = G_WARN_ALL_OFF; |
| 3695 | if (!specialWARN(PL_compiling.cop_warnings)) |
| 3696 | PerlMemShared_free(PL_compiling.cop_warnings); |
| 3697 | PL_compiling.cop_warnings = pWARN_NONE ; |
| 3698 | s++; |
| 3699 | return s; |
| 3700 | case '*': |
| 3701 | case ' ': |
| 3702 | while( *s == ' ' ) |
| 3703 | ++s; |
| 3704 | if (s[0] == '-') /* Additional switches on #! line. */ |
| 3705 | return s+1; |
| 3706 | break; |
| 3707 | case '-': |
| 3708 | case 0: |
| 3709 | #if defined(WIN32) || !defined(PERL_STRICT_CR) |
| 3710 | case '\r': |
| 3711 | #endif |
| 3712 | case '\n': |
| 3713 | case '\t': |
| 3714 | break; |
| 3715 | #ifdef ALTERNATE_SHEBANG |
| 3716 | case 'S': /* OS/2 needs -S on "extproc" line. */ |
| 3717 | break; |
| 3718 | #endif |
| 3719 | case 'e': case 'f': case 'x': case 'E': |
| 3720 | #ifndef ALTERNATE_SHEBANG |
| 3721 | case 'S': |
| 3722 | #endif |
| 3723 | case 'V': |
| 3724 | Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s); |
| 3725 | default: |
| 3726 | Perl_croak(aTHX_ |
| 3727 | "Unrecognized switch: -%.1s (-h will show valid options)",s |
| 3728 | ); |
| 3729 | } |
| 3730 | return NULL; |
| 3731 | } |
| 3732 | |
| 3733 | |
| 3734 | STATIC void |
| 3735 | S_minus_v(pTHX) |
| 3736 | { |
| 3737 | PerlIO * PIO_stdout; |
| 3738 | { |
| 3739 | const char * const level_str = "v" PERL_VERSION_STRING; |
| 3740 | const STRLEN level_len = sizeof("v" PERL_VERSION_STRING)-1; |
| 3741 | #ifdef PERL_PATCHNUM |
| 3742 | SV* level; |
| 3743 | # ifdef PERL_GIT_UNCOMMITTED_CHANGES |
| 3744 | static const char num [] = PERL_PATCHNUM "*"; |
| 3745 | # else |
| 3746 | static const char num [] = PERL_PATCHNUM; |
| 3747 | # endif |
| 3748 | { |
| 3749 | const STRLEN num_len = sizeof(num)-1; |
| 3750 | /* A very advanced compiler would fold away the strnEQ |
| 3751 | and this whole conditional, but most (all?) won't do it. |
| 3752 | SV level could also be replaced by with preprocessor |
| 3753 | catenation. |
| 3754 | */ |
| 3755 | if (num_len >= level_len && strnEQ(num,level_str,level_len)) { |
| 3756 | /* per 46807d8e80, PERL_PATCHNUM is outside of the control |
| 3757 | of the interp so it might contain format characters |
| 3758 | */ |
| 3759 | level = newSVpvn(num, num_len); |
| 3760 | } else { |
| 3761 | level = Perl_newSVpvf_nocontext("%s (%s)", level_str, num); |
| 3762 | } |
| 3763 | } |
| 3764 | #else |
| 3765 | SV* level = newSVpvn(level_str, level_len); |
| 3766 | #endif /* #ifdef PERL_PATCHNUM */ |
| 3767 | PIO_stdout = PerlIO_stdout(); |
| 3768 | PerlIO_printf(PIO_stdout, |
| 3769 | "\nThis is perl " STRINGIFY(PERL_REVISION) |
| 3770 | ", version " STRINGIFY(PERL_VERSION) |
| 3771 | ", subversion " STRINGIFY(PERL_SUBVERSION) |
| 3772 | " (%" SVf ") built for " ARCHNAME, SVfARG(level) |
| 3773 | ); |
| 3774 | SvREFCNT_dec_NN(level); |
| 3775 | } |
| 3776 | #if defined(LOCAL_PATCH_COUNT) |
| 3777 | if (LOCAL_PATCH_COUNT > 0) |
| 3778 | PerlIO_printf(PIO_stdout, |
| 3779 | "\n(with %d registered patch%s, " |
| 3780 | "see perl -V for more detail)", |
| 3781 | LOCAL_PATCH_COUNT, |
| 3782 | (LOCAL_PATCH_COUNT!=1) ? "es" : ""); |
| 3783 | #endif |
| 3784 | |
| 3785 | PerlIO_printf(PIO_stdout, |
| 3786 | "\n\nCopyright 1987-2017, Larry Wall\n"); |
| 3787 | #ifdef MSDOS |
| 3788 | PerlIO_printf(PIO_stdout, |
| 3789 | "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n"); |
| 3790 | #endif |
| 3791 | #ifdef DJGPP |
| 3792 | PerlIO_printf(PIO_stdout, |
| 3793 | "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n" |
| 3794 | "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n"); |
| 3795 | #endif |
| 3796 | #ifdef OS2 |
| 3797 | PerlIO_printf(PIO_stdout, |
| 3798 | "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n" |
| 3799 | "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n"); |
| 3800 | #endif |
| 3801 | #ifdef OEMVS |
| 3802 | PerlIO_printf(PIO_stdout, |
| 3803 | "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n"); |
| 3804 | #endif |
| 3805 | #ifdef __VOS__ |
| 3806 | PerlIO_printf(PIO_stdout, |
| 3807 | "Stratus OpenVOS port by Paul.Green@stratus.com, 1997-2013\n"); |
| 3808 | #endif |
| 3809 | #ifdef POSIX_BC |
| 3810 | PerlIO_printf(PIO_stdout, |
| 3811 | "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n"); |
| 3812 | #endif |
| 3813 | #ifdef UNDER_CE |
| 3814 | PerlIO_printf(PIO_stdout, |
| 3815 | "WINCE port by Rainer Keuchel, 2001-2002\n" |
| 3816 | "Built on " __DATE__ " " __TIME__ "\n\n"); |
| 3817 | wce_hitreturn(); |
| 3818 | #endif |
| 3819 | #ifdef __SYMBIAN32__ |
| 3820 | PerlIO_printf(PIO_stdout, |
| 3821 | "Symbian port by Nokia, 2004-2005\n"); |
| 3822 | #endif |
| 3823 | #ifdef BINARY_BUILD_NOTICE |
| 3824 | BINARY_BUILD_NOTICE; |
| 3825 | #endif |
| 3826 | PerlIO_printf(PIO_stdout, |
| 3827 | "\n\ |
| 3828 | Perl may be copied only under the terms of either the Artistic License or the\n\ |
| 3829 | GNU General Public License, which may be found in the Perl 5 source kit.\n\n\ |
| 3830 | Complete documentation for Perl, including FAQ lists, should be found on\n\ |
| 3831 | this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\ |
| 3832 | Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n"); |
| 3833 | my_exit(0); |
| 3834 | } |
| 3835 | |
| 3836 | /* compliments of Tom Christiansen */ |
| 3837 | |
| 3838 | /* unexec() can be found in the Gnu emacs distribution */ |
| 3839 | /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */ |
| 3840 | |
| 3841 | #ifdef VMS |
| 3842 | #include <lib$routines.h> |
| 3843 | #endif |
| 3844 | |
| 3845 | void |
| 3846 | Perl_my_unexec(pTHX) |
| 3847 | { |
| 3848 | #ifdef UNEXEC |
| 3849 | SV * prog = newSVpv(BIN_EXP, 0); |
| 3850 | SV * file = newSVpv(PL_origfilename, 0); |
| 3851 | int status = 1; |
| 3852 | extern int etext; |
| 3853 | |
| 3854 | sv_catpvs(prog, "/perl"); |
| 3855 | sv_catpvs(file, ".perldump"); |
| 3856 | |
| 3857 | unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0); |
| 3858 | /* unexec prints msg to stderr in case of failure */ |
| 3859 | PerlProc_exit(status); |
| 3860 | #else |
| 3861 | PERL_UNUSED_CONTEXT; |
| 3862 | # ifdef VMS |
| 3863 | lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */ |
| 3864 | # elif defined(WIN32) || defined(__CYGWIN__) |
| 3865 | Perl_croak_nocontext("dump is not supported"); |
| 3866 | # else |
| 3867 | ABORT(); /* for use with undump */ |
| 3868 | # endif |
| 3869 | #endif |
| 3870 | } |
| 3871 | |
| 3872 | /* initialize curinterp */ |
| 3873 | STATIC void |
| 3874 | S_init_interp(pTHX) |
| 3875 | { |
| 3876 | #ifdef MULTIPLICITY |
| 3877 | # define PERLVAR(prefix,var,type) |
| 3878 | # define PERLVARA(prefix,var,n,type) |
| 3879 | # if defined(PERL_IMPLICIT_CONTEXT) |
| 3880 | # define PERLVARI(prefix,var,type,init) aTHX->prefix##var = init; |
| 3881 | # define PERLVARIC(prefix,var,type,init) aTHX->prefix##var = init; |
| 3882 | # else |
| 3883 | # define PERLVARI(prefix,var,type,init) PERL_GET_INTERP->var = init; |
| 3884 | # define PERLVARIC(prefix,var,type,init) PERL_GET_INTERP->var = init; |
| 3885 | # endif |
| 3886 | # include "intrpvar.h" |
| 3887 | # undef PERLVAR |
| 3888 | # undef PERLVARA |
| 3889 | # undef PERLVARI |
| 3890 | # undef PERLVARIC |
| 3891 | #else |
| 3892 | # define PERLVAR(prefix,var,type) |
| 3893 | # define PERLVARA(prefix,var,n,type) |
| 3894 | # define PERLVARI(prefix,var,type,init) PL_##var = init; |
| 3895 | # define PERLVARIC(prefix,var,type,init) PL_##var = init; |
| 3896 | # include "intrpvar.h" |
| 3897 | # undef PERLVAR |
| 3898 | # undef PERLVARA |
| 3899 | # undef PERLVARI |
| 3900 | # undef PERLVARIC |
| 3901 | #endif |
| 3902 | |
| 3903 | } |
| 3904 | |
| 3905 | STATIC void |
| 3906 | S_init_main_stash(pTHX) |
| 3907 | { |
| 3908 | GV *gv; |
| 3909 | HV *hv = newHV(); |
| 3910 | |
| 3911 | PL_curstash = PL_defstash = (HV *)SvREFCNT_inc_simple_NN(hv); |
| 3912 | /* We know that the string "main" will be in the global shared string |
| 3913 | table, so it's a small saving to use it rather than allocate another |
| 3914 | 8 bytes. */ |
| 3915 | PL_curstname = newSVpvs_share("main"); |
| 3916 | gv = gv_fetchpvs("main::", GV_ADD|GV_NOTQUAL, SVt_PVHV); |
| 3917 | /* If we hadn't caused another reference to "main" to be in the shared |
| 3918 | string table above, then it would be worth reordering these two, |
| 3919 | because otherwise all we do is delete "main" from it as a consequence |
| 3920 | of the SvREFCNT_dec, only to add it again with hv_name_set */ |
| 3921 | SvREFCNT_dec(GvHV(gv)); |
| 3922 | hv_name_sets(PL_defstash, "main", 0); |
| 3923 | GvHV(gv) = MUTABLE_HV(SvREFCNT_inc_simple(PL_defstash)); |
| 3924 | SvREADONLY_on(gv); |
| 3925 | PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpvs("INC", GV_ADD|GV_NOTQUAL, |
| 3926 | SVt_PVAV))); |
| 3927 | SvREFCNT_inc_simple_void(PL_incgv); /* Don't allow it to be freed */ |
| 3928 | GvMULTI_on(PL_incgv); |
| 3929 | PL_hintgv = gv_fetchpvs("\010", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^H */ |
| 3930 | SvREFCNT_inc_simple_void(PL_hintgv); |
| 3931 | GvMULTI_on(PL_hintgv); |
| 3932 | PL_defgv = gv_fetchpvs("_", GV_ADD|GV_NOTQUAL, SVt_PVAV); |
| 3933 | SvREFCNT_inc_simple_void(PL_defgv); |
| 3934 | PL_errgv = gv_fetchpvs("@", GV_ADD|GV_NOTQUAL, SVt_PV); |
| 3935 | SvREFCNT_inc_simple_void(PL_errgv); |
| 3936 | GvMULTI_on(PL_errgv); |
| 3937 | PL_replgv = gv_fetchpvs("\022", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^R */ |
| 3938 | SvREFCNT_inc_simple_void(PL_replgv); |
| 3939 | GvMULTI_on(PL_replgv); |
| 3940 | (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */ |
| 3941 | #ifdef PERL_DONT_CREATE_GVSV |
| 3942 | (void)gv_SVadd(PL_errgv); |
| 3943 | #endif |
| 3944 | sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */ |
| 3945 | CLEAR_ERRSV(); |
| 3946 | CopSTASH_set(&PL_compiling, PL_defstash); |
| 3947 | PL_debstash = GvHV(gv_fetchpvs("DB::", GV_ADDMULTI, SVt_PVHV)); |
| 3948 | PL_globalstash = GvHV(gv_fetchpvs("CORE::GLOBAL::", GV_ADDMULTI, |
| 3949 | SVt_PVHV)); |
| 3950 | /* We must init $/ before switches are processed. */ |
| 3951 | sv_setpvs(get_sv("/", GV_ADD), "\n"); |
| 3952 | } |
| 3953 | |
| 3954 | STATIC PerlIO * |
| 3955 | S_open_script(pTHX_ const char *scriptname, bool dosearch, bool *suidscript) |
| 3956 | { |
| 3957 | int fdscript = -1; |
| 3958 | PerlIO *rsfp = NULL; |
| 3959 | Stat_t tmpstatbuf; |
| 3960 | int fd; |
| 3961 | |
| 3962 | PERL_ARGS_ASSERT_OPEN_SCRIPT; |
| 3963 | |
| 3964 | if (PL_e_script) { |
| 3965 | PL_origfilename = savepvs("-e"); |
| 3966 | } |
| 3967 | else { |
| 3968 | const char *s; |
| 3969 | UV uv; |
| 3970 | /* if find_script() returns, it returns a malloc()-ed value */ |
| 3971 | scriptname = PL_origfilename = find_script(scriptname, dosearch, NULL, 1); |
| 3972 | |
| 3973 | if (strBEGINs(scriptname, "/dev/fd/") |
| 3974 | && isDIGIT(scriptname[8]) |
| 3975 | && grok_atoUV(scriptname + 8, &uv, &s) |
| 3976 | && uv <= PERL_INT_MAX |
| 3977 | ) { |
| 3978 | fdscript = (int)uv; |
| 3979 | if (*s) { |
| 3980 | /* PSz 18 Feb 04 |
| 3981 | * Tell apart "normal" usage of fdscript, e.g. |
| 3982 | * with bash on FreeBSD: |
| 3983 | * perl <( echo '#!perl -DA'; echo 'print "$0\n"') |
| 3984 | * from usage in suidperl. |
| 3985 | * Does any "normal" usage leave garbage after the number??? |
| 3986 | * Is it a mistake to use a similar /dev/fd/ construct for |
| 3987 | * suidperl? |
| 3988 | */ |
| 3989 | *suidscript = TRUE; |
| 3990 | /* PSz 20 Feb 04 |
| 3991 | * Be supersafe and do some sanity-checks. |
| 3992 | * Still, can we be sure we got the right thing? |
| 3993 | */ |
| 3994 | if (*s != '/') { |
| 3995 | Perl_croak(aTHX_ "Wrong syntax (suid) fd script name \"%s\"\n", s); |
| 3996 | } |
| 3997 | if (! *(s+1)) { |
| 3998 | Perl_croak(aTHX_ "Missing (suid) fd script name\n"); |
| 3999 | } |
| 4000 | scriptname = savepv(s + 1); |
| 4001 | Safefree(PL_origfilename); |
| 4002 | PL_origfilename = (char *)scriptname; |
| 4003 | } |
| 4004 | } |
| 4005 | } |
| 4006 | |
| 4007 | CopFILE_free(PL_curcop); |
| 4008 | CopFILE_set(PL_curcop, PL_origfilename); |
| 4009 | if (*PL_origfilename == '-' && PL_origfilename[1] == '\0') |
| 4010 | scriptname = (char *)""; |
| 4011 | if (fdscript >= 0) { |
| 4012 | rsfp = PerlIO_fdopen(fdscript,PERL_SCRIPT_MODE); |
| 4013 | } |
| 4014 | else if (!*scriptname) { |
| 4015 | forbid_setid(0, *suidscript); |
| 4016 | return NULL; |
| 4017 | } |
| 4018 | else { |
| 4019 | #ifdef FAKE_BIT_BUCKET |
| 4020 | /* This hack allows one not to have /dev/null (or BIT_BUCKET as it |
| 4021 | * is called) and still have the "-e" work. (Believe it or not, |
| 4022 | * a /dev/null is required for the "-e" to work because source |
| 4023 | * filter magic is used to implement it. ) This is *not* a general |
| 4024 | * replacement for a /dev/null. What we do here is create a temp |
| 4025 | * file (an empty file), open up that as the script, and then |
| 4026 | * immediately close and unlink it. Close enough for jazz. */ |
| 4027 | #define FAKE_BIT_BUCKET_PREFIX "/tmp/perlnull-" |
| 4028 | #define FAKE_BIT_BUCKET_SUFFIX "XXXXXXXX" |
| 4029 | #define FAKE_BIT_BUCKET_TEMPLATE FAKE_BIT_BUCKET_PREFIX FAKE_BIT_BUCKET_SUFFIX |
| 4030 | char tmpname[sizeof(FAKE_BIT_BUCKET_TEMPLATE)] = { |
| 4031 | FAKE_BIT_BUCKET_TEMPLATE |
| 4032 | }; |
| 4033 | const char * const err = "Failed to create a fake bit bucket"; |
| 4034 | if (strEQ(scriptname, BIT_BUCKET)) { |
| 4035 | int tmpfd = Perl_my_mkstemp_cloexec(tmpname); |
| 4036 | if (tmpfd > -1) { |
| 4037 | scriptname = tmpname; |
| 4038 | close(tmpfd); |
| 4039 | } else |
| 4040 | Perl_croak(aTHX_ err); |
| 4041 | } |
| 4042 | #endif |
| 4043 | rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE); |
| 4044 | #ifdef FAKE_BIT_BUCKET |
| 4045 | if ( strBEGINs(scriptname, FAKE_BIT_BUCKET_PREFIX) |
| 4046 | && strlen(scriptname) == sizeof(tmpname) - 1) |
| 4047 | { |
| 4048 | unlink(scriptname); |
| 4049 | } |
| 4050 | scriptname = BIT_BUCKET; |
| 4051 | #endif |
| 4052 | } |
| 4053 | if (!rsfp) { |
| 4054 | /* PSz 16 Sep 03 Keep neat error message */ |
| 4055 | if (PL_e_script) |
| 4056 | Perl_croak(aTHX_ "Can't open " BIT_BUCKET ": %s\n", Strerror(errno)); |
| 4057 | else |
| 4058 | Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n", |
| 4059 | CopFILE(PL_curcop), Strerror(errno)); |
| 4060 | } |
| 4061 | fd = PerlIO_fileno(rsfp); |
| 4062 | |
| 4063 | if (fd < 0 || |
| 4064 | (PerlLIO_fstat(fd, &tmpstatbuf) >= 0 |
| 4065 | && S_ISDIR(tmpstatbuf.st_mode))) |
| 4066 | Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n", |
| 4067 | CopFILE(PL_curcop), |
| 4068 | Strerror(EISDIR)); |
| 4069 | |
| 4070 | return rsfp; |
| 4071 | } |
| 4072 | |
| 4073 | /* In the days of suidperl, we refused to execute a setuid script stored on |
| 4074 | * a filesystem mounted nosuid and/or noexec. This meant that we probed for the |
| 4075 | * existence of the appropriate filesystem-statting function, and behaved |
| 4076 | * accordingly. But even though suidperl is long gone, we must still include |
| 4077 | * those probes for the benefit of modules like Filesys::Df, which expect the |
| 4078 | * results of those probes to be stored in %Config; see RT#126368. So mention |
| 4079 | * the relevant cpp symbols here, to ensure that metaconfig will include their |
| 4080 | * probes in the generated Configure: |
| 4081 | * |
| 4082 | * I_SYSSTATVFS HAS_FSTATVFS |
| 4083 | * I_SYSMOUNT |
| 4084 | * I_STATFS HAS_FSTATFS HAS_GETFSSTAT |
| 4085 | * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT |
| 4086 | */ |
| 4087 | |
| 4088 | |
| 4089 | #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW |
| 4090 | /* Don't even need this function. */ |
| 4091 | #else |
| 4092 | STATIC void |
| 4093 | S_validate_suid(pTHX_ PerlIO *rsfp) |
| 4094 | { |
| 4095 | const Uid_t my_uid = PerlProc_getuid(); |
| 4096 | const Uid_t my_euid = PerlProc_geteuid(); |
| 4097 | const Gid_t my_gid = PerlProc_getgid(); |
| 4098 | const Gid_t my_egid = PerlProc_getegid(); |
| 4099 | |
| 4100 | PERL_ARGS_ASSERT_VALIDATE_SUID; |
| 4101 | |
| 4102 | if (my_euid != my_uid || my_egid != my_gid) { /* (suidperl doesn't exist, in fact) */ |
| 4103 | dVAR; |
| 4104 | int fd = PerlIO_fileno(rsfp); |
| 4105 | Stat_t statbuf; |
| 4106 | if (fd < 0 || PerlLIO_fstat(fd, &statbuf) < 0) { /* may be either wrapped or real suid */ |
| 4107 | Perl_croak_nocontext( "Illegal suidscript"); |
| 4108 | } |
| 4109 | if ((my_euid != my_uid && my_euid == statbuf.st_uid && statbuf.st_mode & S_ISUID) |
| 4110 | || |
| 4111 | (my_egid != my_gid && my_egid == statbuf.st_gid && statbuf.st_mode & S_ISGID) |
| 4112 | ) |
| 4113 | if (!PL_do_undump) |
| 4114 | Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\ |
| 4115 | FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n"); |
| 4116 | /* not set-id, must be wrapped */ |
| 4117 | } |
| 4118 | } |
| 4119 | #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */ |
| 4120 | |
| 4121 | STATIC void |
| 4122 | S_find_beginning(pTHX_ SV* linestr_sv, PerlIO *rsfp) |
| 4123 | { |
| 4124 | const char *s; |
| 4125 | const char *s2; |
| 4126 | |
| 4127 | PERL_ARGS_ASSERT_FIND_BEGINNING; |
| 4128 | |
| 4129 | /* skip forward in input to the real script? */ |
| 4130 | |
| 4131 | do { |
| 4132 | if ((s = sv_gets(linestr_sv, rsfp, 0)) == NULL) |
| 4133 | Perl_croak(aTHX_ "No Perl script found in input\n"); |
| 4134 | s2 = s; |
| 4135 | } while (!(*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL"))))); |
| 4136 | PerlIO_ungetc(rsfp, '\n'); /* to keep line count right */ |
| 4137 | while (*s && !(isSPACE (*s) || *s == '#')) s++; |
| 4138 | s2 = s; |
| 4139 | while (*s == ' ' || *s == '\t') s++; |
| 4140 | if (*s++ == '-') { |
| 4141 | while (isDIGIT(s2[-1]) || s2[-1] == '-' || s2[-1] == '.' |
| 4142 | || s2[-1] == '_') s2--; |
| 4143 | if (strBEGINs(s2-4,"perl")) |
| 4144 | while ((s = moreswitches(s))) |
| 4145 | ; |
| 4146 | } |
| 4147 | } |
| 4148 | |
| 4149 | |
| 4150 | STATIC void |
| 4151 | S_init_ids(pTHX) |
| 4152 | { |
| 4153 | /* no need to do anything here any more if we don't |
| 4154 | * do tainting. */ |
| 4155 | #ifndef NO_TAINT_SUPPORT |
| 4156 | const Uid_t my_uid = PerlProc_getuid(); |
| 4157 | const Uid_t my_euid = PerlProc_geteuid(); |
| 4158 | const Gid_t my_gid = PerlProc_getgid(); |
| 4159 | const Gid_t my_egid = PerlProc_getegid(); |
| 4160 | |
| 4161 | PERL_UNUSED_CONTEXT; |
| 4162 | |
| 4163 | /* Should not happen: */ |
| 4164 | CHECK_MALLOC_TAINT(my_uid && (my_euid != my_uid || my_egid != my_gid)); |
| 4165 | TAINTING_set( TAINTING_get | (my_uid && (my_euid != my_uid || my_egid != my_gid)) ); |
| 4166 | #endif |
| 4167 | /* BUG */ |
| 4168 | /* PSz 27 Feb 04 |
| 4169 | * Should go by suidscript, not uid!=euid: why disallow |
| 4170 | * system("ls") in scripts run from setuid things? |
| 4171 | * Or, is this run before we check arguments and set suidscript? |
| 4172 | * What about SETUID_SCRIPTS_ARE_SECURE_NOW: could we use fdscript then? |
| 4173 | * (We never have suidscript, can we be sure to have fdscript?) |
| 4174 | * Or must then go by UID checks? See comments in forbid_setid also. |
| 4175 | */ |
| 4176 | } |
| 4177 | |
| 4178 | /* This is used very early in the lifetime of the program, |
| 4179 | * before even the options are parsed, so PL_tainting has |
| 4180 | * not been initialized properly. */ |
| 4181 | bool |
| 4182 | Perl_doing_taint(int argc, char *argv[], char *envp[]) |
| 4183 | { |
| 4184 | #ifndef PERL_IMPLICIT_SYS |
| 4185 | /* If we have PERL_IMPLICIT_SYS we can't call getuid() et alia |
| 4186 | * before we have an interpreter-- and the whole point of this |
| 4187 | * function is to be called at such an early stage. If you are on |
| 4188 | * a system with PERL_IMPLICIT_SYS but you do have a concept of |
| 4189 | * "tainted because running with altered effective ids', you'll |
| 4190 | * have to add your own checks somewhere in here. The two most |
| 4191 | * known samples of 'implicitness' are Win32 and NetWare, neither |
| 4192 | * of which has much of concept of 'uids'. */ |
| 4193 | Uid_t uid = PerlProc_getuid(); |
| 4194 | Uid_t euid = PerlProc_geteuid(); |
| 4195 | Gid_t gid = PerlProc_getgid(); |
| 4196 | Gid_t egid = PerlProc_getegid(); |
| 4197 | (void)envp; |
| 4198 | |
| 4199 | #ifdef VMS |
| 4200 | uid |= gid << 16; |
| 4201 | euid |= egid << 16; |
| 4202 | #endif |
| 4203 | if (uid && (euid != uid || egid != gid)) |
| 4204 | return 1; |
| 4205 | #endif /* !PERL_IMPLICIT_SYS */ |
| 4206 | /* This is a really primitive check; environment gets ignored only |
| 4207 | * if -T are the first chars together; otherwise one gets |
| 4208 | * "Too late" message. */ |
| 4209 | if ( argc > 1 && argv[1][0] == '-' |
| 4210 | && isALPHA_FOLD_EQ(argv[1][1], 't')) |
| 4211 | return 1; |
| 4212 | return 0; |
| 4213 | } |
| 4214 | |
| 4215 | /* Passing the flag as a single char rather than a string is a slight space |
| 4216 | optimisation. The only message that isn't /^-.$/ is |
| 4217 | "program input from stdin", which is substituted in place of '\0', which |
| 4218 | could never be a command line flag. */ |
| 4219 | STATIC void |
| 4220 | S_forbid_setid(pTHX_ const char flag, const bool suidscript) /* g */ |
| 4221 | { |
| 4222 | char string[3] = "-x"; |
| 4223 | const char *message = "program input from stdin"; |
| 4224 | |
| 4225 | PERL_UNUSED_CONTEXT; |
| 4226 | if (flag) { |
| 4227 | string[1] = flag; |
| 4228 | message = string; |
| 4229 | } |
| 4230 | |
| 4231 | #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW |
| 4232 | if (PerlProc_getuid() != PerlProc_geteuid()) |
| 4233 | Perl_croak(aTHX_ "No %s allowed while running setuid", message); |
| 4234 | if (PerlProc_getgid() != PerlProc_getegid()) |
| 4235 | Perl_croak(aTHX_ "No %s allowed while running setgid", message); |
| 4236 | #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */ |
| 4237 | if (suidscript) |
| 4238 | Perl_croak(aTHX_ "No %s allowed with (suid) fdscript", message); |
| 4239 | } |
| 4240 | |
| 4241 | void |
| 4242 | Perl_init_dbargs(pTHX) |
| 4243 | { |
| 4244 | AV *const args = PL_dbargs = GvAV(gv_AVadd((gv_fetchpvs("DB::args", |
| 4245 | GV_ADDMULTI, |
| 4246 | SVt_PVAV)))); |
| 4247 | |
| 4248 | if (AvREAL(args)) { |
| 4249 | /* Someone has already created it. |
| 4250 | It might have entries, and if we just turn off AvREAL(), they will |
| 4251 | "leak" until global destruction. */ |
| 4252 | av_clear(args); |
| 4253 | if (SvTIED_mg((const SV *)args, PERL_MAGIC_tied)) |
| 4254 | Perl_croak(aTHX_ "Cannot set tied @DB::args"); |
| 4255 | } |
| 4256 | AvREIFY_only(PL_dbargs); |
| 4257 | } |
| 4258 | |
| 4259 | void |
| 4260 | Perl_init_debugger(pTHX) |
| 4261 | { |
| 4262 | HV * const ostash = PL_curstash; |
| 4263 | MAGIC *mg; |
| 4264 | |
| 4265 | PL_curstash = (HV *)SvREFCNT_inc_simple(PL_debstash); |
| 4266 | |
| 4267 | Perl_init_dbargs(aTHX); |
| 4268 | PL_DBgv = MUTABLE_GV( |
| 4269 | SvREFCNT_inc(gv_fetchpvs("DB::DB", GV_ADDMULTI, SVt_PVGV)) |
| 4270 | ); |
| 4271 | PL_DBline = MUTABLE_GV( |
| 4272 | SvREFCNT_inc(gv_fetchpvs("DB::dbline", GV_ADDMULTI, SVt_PVAV)) |
| 4273 | ); |
| 4274 | PL_DBsub = MUTABLE_GV(SvREFCNT_inc( |
| 4275 | gv_HVadd(gv_fetchpvs("DB::sub", GV_ADDMULTI, SVt_PVHV)) |
| 4276 | )); |
| 4277 | PL_DBsingle = GvSV((gv_fetchpvs("DB::single", GV_ADDMULTI, SVt_PV))); |
| 4278 | if (!SvIOK(PL_DBsingle)) |
| 4279 | sv_setiv(PL_DBsingle, 0); |
| 4280 | mg = sv_magicext(PL_DBsingle, NULL, PERL_MAGIC_debugvar, &PL_vtbl_debugvar, 0, 0); |
| 4281 | mg->mg_private = DBVARMG_SINGLE; |
| 4282 | SvSETMAGIC(PL_DBsingle); |
| 4283 | |
| 4284 | PL_DBtrace = GvSV((gv_fetchpvs("DB::trace", GV_ADDMULTI, SVt_PV))); |
| 4285 | if (!SvIOK(PL_DBtrace)) |
| 4286 | sv_setiv(PL_DBtrace, 0); |
| 4287 | mg = sv_magicext(PL_DBtrace, NULL, PERL_MAGIC_debugvar, &PL_vtbl_debugvar, 0, 0); |
| 4288 | mg->mg_private = DBVARMG_TRACE; |
| 4289 | SvSETMAGIC(PL_DBtrace); |
| 4290 | |
| 4291 | PL_DBsignal = GvSV((gv_fetchpvs("DB::signal", GV_ADDMULTI, SVt_PV))); |
| 4292 | if (!SvIOK(PL_DBsignal)) |
| 4293 | sv_setiv(PL_DBsignal, 0); |
| 4294 | mg = sv_magicext(PL_DBsignal, NULL, PERL_MAGIC_debugvar, &PL_vtbl_debugvar, 0, 0); |
| 4295 | mg->mg_private = DBVARMG_SIGNAL; |
| 4296 | SvSETMAGIC(PL_DBsignal); |
| 4297 | |
| 4298 | SvREFCNT_dec(PL_curstash); |
| 4299 | PL_curstash = ostash; |
| 4300 | } |
| 4301 | |
| 4302 | #ifndef STRESS_REALLOC |
| 4303 | #define REASONABLE(size) (size) |
| 4304 | #define REASONABLE_but_at_least(size,min) (size) |
| 4305 | #else |
| 4306 | #define REASONABLE(size) (1) /* unreasonable */ |
| 4307 | #define REASONABLE_but_at_least(size,min) (min) |
| 4308 | #endif |
| 4309 | |
| 4310 | void |
| 4311 | Perl_init_stacks(pTHX) |
| 4312 | { |
| 4313 | SSize_t size; |
| 4314 | |
| 4315 | /* start with 128-item stack and 8K cxstack */ |
| 4316 | PL_curstackinfo = new_stackinfo(REASONABLE(128), |
| 4317 | REASONABLE(8192/sizeof(PERL_CONTEXT) - 1)); |
| 4318 | PL_curstackinfo->si_type = PERLSI_MAIN; |
| 4319 | #if defined DEBUGGING && !defined DEBUGGING_RE_ONLY |
| 4320 | PL_curstackinfo->si_stack_hwm = 0; |
| 4321 | #endif |
| 4322 | PL_curstack = PL_curstackinfo->si_stack; |
| 4323 | PL_mainstack = PL_curstack; /* remember in case we switch stacks */ |
| 4324 | |
| 4325 | PL_stack_base = AvARRAY(PL_curstack); |
| 4326 | PL_stack_sp = PL_stack_base; |
| 4327 | PL_stack_max = PL_stack_base + AvMAX(PL_curstack); |
| 4328 | |
| 4329 | Newx(PL_tmps_stack,REASONABLE(128),SV*); |
| 4330 | PL_tmps_floor = -1; |
| 4331 | PL_tmps_ix = -1; |
| 4332 | PL_tmps_max = REASONABLE(128); |
| 4333 | |
| 4334 | Newx(PL_markstack,REASONABLE(32),I32); |
| 4335 | PL_markstack_ptr = PL_markstack; |
| 4336 | PL_markstack_max = PL_markstack + REASONABLE(32); |
| 4337 | |
| 4338 | SET_MARK_OFFSET; |
| 4339 | |
| 4340 | Newx(PL_scopestack,REASONABLE(32),I32); |
| 4341 | #ifdef DEBUGGING |
| 4342 | Newx(PL_scopestack_name,REASONABLE(32),const char*); |
| 4343 | #endif |
| 4344 | PL_scopestack_ix = 0; |
| 4345 | PL_scopestack_max = REASONABLE(32); |
| 4346 | |
| 4347 | size = REASONABLE_but_at_least(128,SS_MAXPUSH); |
| 4348 | Newx(PL_savestack, size, ANY); |
| 4349 | PL_savestack_ix = 0; |
| 4350 | /*PL_savestack_max lies: it always has SS_MAXPUSH more than it claims */ |
| 4351 | PL_savestack_max = size - SS_MAXPUSH; |
| 4352 | } |
| 4353 | |
| 4354 | #undef REASONABLE |
| 4355 | |
| 4356 | STATIC void |
| 4357 | S_nuke_stacks(pTHX) |
| 4358 | { |
| 4359 | while (PL_curstackinfo->si_next) |
| 4360 | PL_curstackinfo = PL_curstackinfo->si_next; |
| 4361 | while (PL_curstackinfo) { |
| 4362 | PERL_SI *p = PL_curstackinfo->si_prev; |
| 4363 | /* curstackinfo->si_stack got nuked by sv_free_arenas() */ |
| 4364 | Safefree(PL_curstackinfo->si_cxstack); |
| 4365 | Safefree(PL_curstackinfo); |
| 4366 | PL_curstackinfo = p; |
| 4367 | } |
| 4368 | Safefree(PL_tmps_stack); |
| 4369 | Safefree(PL_markstack); |
| 4370 | Safefree(PL_scopestack); |
| 4371 | #ifdef DEBUGGING |
| 4372 | Safefree(PL_scopestack_name); |
| 4373 | #endif |
| 4374 | Safefree(PL_savestack); |
| 4375 | } |
| 4376 | |
| 4377 | void |
| 4378 | Perl_populate_isa(pTHX_ const char *name, STRLEN len, ...) |
| 4379 | { |
| 4380 | GV *const gv = gv_fetchpvn(name, len, GV_ADD | GV_ADDMULTI, SVt_PVAV); |
| 4381 | AV *const isa = GvAVn(gv); |
| 4382 | va_list args; |
| 4383 | |
| 4384 | PERL_ARGS_ASSERT_POPULATE_ISA; |
| 4385 | |
| 4386 | if(AvFILLp(isa) != -1) |
| 4387 | return; |
| 4388 | |
| 4389 | /* NOTE: No support for tied ISA */ |
| 4390 | |
| 4391 | va_start(args, len); |
| 4392 | do { |
| 4393 | const char *const parent = va_arg(args, const char*); |
| 4394 | size_t parent_len; |
| 4395 | |
| 4396 | if (!parent) |
| 4397 | break; |
| 4398 | parent_len = va_arg(args, size_t); |
| 4399 | |
| 4400 | /* Arguments are supplied with a trailing :: */ |
| 4401 | assert(parent_len > 2); |
| 4402 | assert(parent[parent_len - 1] == ':'); |
| 4403 | assert(parent[parent_len - 2] == ':'); |
| 4404 | av_push(isa, newSVpvn(parent, parent_len - 2)); |
| 4405 | (void) gv_fetchpvn(parent, parent_len, GV_ADD, SVt_PVGV); |
| 4406 | } while (1); |
| 4407 | va_end(args); |
| 4408 | } |
| 4409 | |
| 4410 | |
| 4411 | STATIC void |
| 4412 | S_init_predump_symbols(pTHX) |
| 4413 | { |
| 4414 | GV *tmpgv; |
| 4415 | IO *io; |
| 4416 | |
| 4417 | sv_setpvs(get_sv("\"", GV_ADD), " "); |
| 4418 | PL_ofsgv = (GV*)SvREFCNT_inc(gv_fetchpvs(",", GV_ADD|GV_NOTQUAL, SVt_PV)); |
| 4419 | |
| 4420 | |
| 4421 | /* Historically, PVIOs were blessed into IO::Handle, unless |
| 4422 | FileHandle was loaded, in which case they were blessed into |
| 4423 | that. Action at a distance. |
| 4424 | However, if we simply bless into IO::Handle, we break code |
| 4425 | that assumes that PVIOs will have (among others) a seek |
| 4426 | method. IO::File inherits from IO::Handle and IO::Seekable, |
| 4427 | and provides the needed methods. But if we simply bless into |
| 4428 | it, then we break code that assumed that by loading |
| 4429 | IO::Handle, *it* would work. |
| 4430 | So a compromise is to set up the correct @IO::File::ISA, |
| 4431 | so that code that does C<use IO::Handle>; will still work. |
| 4432 | */ |
| 4433 | |
| 4434 | Perl_populate_isa(aTHX_ STR_WITH_LEN("IO::File::ISA"), |
| 4435 | STR_WITH_LEN("IO::Handle::"), |
| 4436 | STR_WITH_LEN("IO::Seekable::"), |
| 4437 | STR_WITH_LEN("Exporter::"), |
| 4438 | NULL); |
| 4439 | |
| 4440 | PL_stdingv = gv_fetchpvs("STDIN", GV_ADD|GV_NOTQUAL, SVt_PVIO); |
| 4441 | GvMULTI_on(PL_stdingv); |
| 4442 | io = GvIOp(PL_stdingv); |
| 4443 | IoTYPE(io) = IoTYPE_RDONLY; |
| 4444 | IoIFP(io) = PerlIO_stdin(); |
| 4445 | tmpgv = gv_fetchpvs("stdin", GV_ADD|GV_NOTQUAL, SVt_PV); |
| 4446 | GvMULTI_on(tmpgv); |
| 4447 | GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io)); |
| 4448 | |
| 4449 | tmpgv = gv_fetchpvs("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); |
| 4450 | GvMULTI_on(tmpgv); |
| 4451 | io = GvIOp(tmpgv); |
| 4452 | IoTYPE(io) = IoTYPE_WRONLY; |
| 4453 | IoOFP(io) = IoIFP(io) = PerlIO_stdout(); |
| 4454 | setdefout(tmpgv); |
| 4455 | tmpgv = gv_fetchpvs("stdout", GV_ADD|GV_NOTQUAL, SVt_PV); |
| 4456 | GvMULTI_on(tmpgv); |
| 4457 | GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io)); |
| 4458 | |
| 4459 | PL_stderrgv = gv_fetchpvs("STDERR", GV_ADD|GV_NOTQUAL, SVt_PVIO); |
| 4460 | GvMULTI_on(PL_stderrgv); |
| 4461 | io = GvIOp(PL_stderrgv); |
| 4462 | IoTYPE(io) = IoTYPE_WRONLY; |
| 4463 | IoOFP(io) = IoIFP(io) = PerlIO_stderr(); |
| 4464 | tmpgv = gv_fetchpvs("stderr", GV_ADD|GV_NOTQUAL, SVt_PV); |
| 4465 | GvMULTI_on(tmpgv); |
| 4466 | GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io)); |
| 4467 | |
| 4468 | PL_statname = newSVpvs(""); /* last filename we did stat on */ |
| 4469 | } |
| 4470 | |
| 4471 | void |
| 4472 | Perl_init_argv_symbols(pTHX_ int argc, char **argv) |
| 4473 | { |
| 4474 | PERL_ARGS_ASSERT_INIT_ARGV_SYMBOLS; |
| 4475 | |
| 4476 | argc--,argv++; /* skip name of script */ |
| 4477 | if (PL_doswitches) { |
| 4478 | for (; argc > 0 && **argv == '-'; argc--,argv++) { |
| 4479 | char *s; |
| 4480 | if (!argv[0][1]) |
| 4481 | break; |
| 4482 | if (argv[0][1] == '-' && !argv[0][2]) { |
| 4483 | argc--,argv++; |
| 4484 | break; |
| 4485 | } |
| 4486 | if ((s = strchr(argv[0], '='))) { |
| 4487 | const char *const start_name = argv[0] + 1; |
| 4488 | sv_setpv(GvSV(gv_fetchpvn_flags(start_name, s - start_name, |
| 4489 | TRUE, SVt_PV)), s + 1); |
| 4490 | } |
| 4491 | else |
| 4492 | sv_setiv(GvSV(gv_fetchpv(argv[0]+1, GV_ADD, SVt_PV)),1); |
| 4493 | } |
| 4494 | } |
| 4495 | if ((PL_argvgv = gv_fetchpvs("ARGV", GV_ADD|GV_NOTQUAL, SVt_PVAV))) { |
| 4496 | SvREFCNT_inc_simple_void_NN(PL_argvgv); |
| 4497 | GvMULTI_on(PL_argvgv); |
| 4498 | av_clear(GvAVn(PL_argvgv)); |
| 4499 | for (; argc > 0; argc--,argv++) { |
| 4500 | SV * const sv = newSVpv(argv[0],0); |
| 4501 | av_push(GvAV(PL_argvgv),sv); |
| 4502 | if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) { |
| 4503 | if (PL_unicode & PERL_UNICODE_ARGV_FLAG) |
| 4504 | SvUTF8_on(sv); |
| 4505 | } |
| 4506 | if (PL_unicode & PERL_UNICODE_WIDESYSCALLS_FLAG) /* Sarathy? */ |
| 4507 | (void)sv_utf8_decode(sv); |
| 4508 | } |
| 4509 | } |
| 4510 | |
| 4511 | if (PL_inplace && (!PL_argvgv || AvFILL(GvAV(PL_argvgv)) == -1)) |
| 4512 | Perl_ck_warner_d(aTHX_ packWARN(WARN_INPLACE), |
| 4513 | "-i used with no filenames on the command line, " |
| 4514 | "reading from STDIN"); |
| 4515 | } |
| 4516 | |
| 4517 | STATIC void |
| 4518 | S_init_postdump_symbols(pTHX_ int argc, char **argv, char **env) |
| 4519 | { |
| 4520 | #ifdef USE_ITHREADS |
| 4521 | dVAR; |
| 4522 | #endif |
| 4523 | GV* tmpgv; |
| 4524 | |
| 4525 | PERL_ARGS_ASSERT_INIT_POSTDUMP_SYMBOLS; |
| 4526 | |
| 4527 | PL_toptarget = newSV_type(SVt_PVIV); |
| 4528 | SvPVCLEAR(PL_toptarget); |
| 4529 | PL_bodytarget = newSV_type(SVt_PVIV); |
| 4530 | SvPVCLEAR(PL_bodytarget); |
| 4531 | PL_formtarget = PL_bodytarget; |
| 4532 | |
| 4533 | TAINT; |
| 4534 | |
| 4535 | init_argv_symbols(argc,argv); |
| 4536 | |
| 4537 | if ((tmpgv = gv_fetchpvs("0", GV_ADD|GV_NOTQUAL, SVt_PV))) { |
| 4538 | sv_setpv(GvSV(tmpgv),PL_origfilename); |
| 4539 | } |
| 4540 | if ((PL_envgv = gv_fetchpvs("ENV", GV_ADD|GV_NOTQUAL, SVt_PVHV))) { |
| 4541 | HV *hv; |
| 4542 | bool env_is_not_environ; |
| 4543 | SvREFCNT_inc_simple_void_NN(PL_envgv); |
| 4544 | GvMULTI_on(PL_envgv); |
| 4545 | hv = GvHVn(PL_envgv); |
| 4546 | hv_magic(hv, NULL, PERL_MAGIC_env); |
| 4547 | #ifndef PERL_MICRO |
| 4548 | #ifdef USE_ENVIRON_ARRAY |
| 4549 | /* Note that if the supplied env parameter is actually a copy |
| 4550 | of the global environ then it may now point to free'd memory |
| 4551 | if the environment has been modified since. To avoid this |
| 4552 | problem we treat env==NULL as meaning 'use the default' |
| 4553 | */ |
| 4554 | if (!env) |
| 4555 | env = environ; |
| 4556 | env_is_not_environ = env != environ; |
| 4557 | if (env_is_not_environ |
| 4558 | # ifdef USE_ITHREADS |
| 4559 | && PL_curinterp == aTHX |
| 4560 | # endif |
| 4561 | ) |
| 4562 | { |
| 4563 | environ[0] = NULL; |
| 4564 | } |
| 4565 | if (env) { |
| 4566 | char *s, *old_var; |
| 4567 | STRLEN nlen; |
| 4568 | SV *sv; |
| 4569 | HV *dups = newHV(); |
| 4570 | |
| 4571 | for (; *env; env++) { |
| 4572 | old_var = *env; |
| 4573 | |
| 4574 | if (!(s = strchr(old_var,'=')) || s == old_var) |
| 4575 | continue; |
| 4576 | nlen = s - old_var; |
| 4577 | |
| 4578 | #if defined(MSDOS) && !defined(DJGPP) |
| 4579 | *s = '\0'; |
| 4580 | (void)strupr(old_var); |
| 4581 | *s = '='; |
| 4582 | #endif |
| 4583 | if (hv_exists(hv, old_var, nlen)) { |
| 4584 | const char *name = savepvn(old_var, nlen); |
| 4585 | |
| 4586 | /* make sure we use the same value as getenv(), otherwise code that |
| 4587 | uses getenv() (like setlocale()) might see a different value to %ENV |
| 4588 | */ |
| 4589 | sv = newSVpv(PerlEnv_getenv(name), 0); |
| 4590 | |
| 4591 | /* keep a count of the dups of this name so we can de-dup environ later */ |
| 4592 | if (hv_exists(dups, name, nlen)) |
| 4593 | ++SvIVX(*hv_fetch(dups, name, nlen, 0)); |
| 4594 | else |
| 4595 | (void)hv_store(dups, name, nlen, newSViv(1), 0); |
| 4596 | |
| 4597 | Safefree(name); |
| 4598 | } |
| 4599 | else { |
| 4600 | sv = newSVpv(s+1, 0); |
| 4601 | } |
| 4602 | (void)hv_store(hv, old_var, nlen, sv, 0); |
| 4603 | if (env_is_not_environ) |
| 4604 | mg_set(sv); |
| 4605 | } |
| 4606 | if (HvKEYS(dups)) { |
| 4607 | /* environ has some duplicate definitions, remove them */ |
| 4608 | HE *entry; |
| 4609 | hv_iterinit(dups); |
| 4610 | while ((entry = hv_iternext_flags(dups, 0))) { |
| 4611 | STRLEN nlen; |
| 4612 | const char *name = HePV(entry, nlen); |
| 4613 | IV count = SvIV(HeVAL(entry)); |
| 4614 | IV i; |
| 4615 | SV **valp = hv_fetch(hv, name, nlen, 0); |
| 4616 | |
| 4617 | assert(valp); |
| 4618 | |
| 4619 | /* try to remove any duplicate names, depending on the |
| 4620 | * implementation used in my_setenv() the iteration might |
| 4621 | * not be necessary, but let's be safe. |
| 4622 | */ |
| 4623 | for (i = 0; i < count; ++i) |
| 4624 | my_setenv(name, 0); |
| 4625 | |
| 4626 | /* and set it back to the value we set $ENV{name} to */ |
| 4627 | my_setenv(name, SvPV_nolen(*valp)); |
| 4628 | } |
| 4629 | } |
| 4630 | SvREFCNT_dec_NN(dups); |
| 4631 | } |
| 4632 | #endif /* USE_ENVIRON_ARRAY */ |
| 4633 | #endif /* !PERL_MICRO */ |
| 4634 | } |
| 4635 | TAINT_NOT; |
| 4636 | |
| 4637 | /* touch @F array to prevent spurious warnings 20020415 MJD */ |
| 4638 | if (PL_minus_a) { |
| 4639 | (void) get_av("main::F", GV_ADD | GV_ADDMULTI); |
| 4640 | } |
| 4641 | } |
| 4642 | |
| 4643 | STATIC void |
| 4644 | S_init_perllib(pTHX) |
| 4645 | { |
| 4646 | #ifndef VMS |
| 4647 | const char *perl5lib = NULL; |
| 4648 | #endif |
| 4649 | const char *s; |
| 4650 | #if defined(WIN32) && !defined(PERL_IS_MINIPERL) |
| 4651 | STRLEN len; |
| 4652 | #endif |
| 4653 | |
| 4654 | if (!TAINTING_get) { |
| 4655 | #ifndef VMS |
| 4656 | perl5lib = PerlEnv_getenv("PERL5LIB"); |
| 4657 | /* |
| 4658 | * It isn't possible to delete an environment variable with |
| 4659 | * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that |
| 4660 | * case we treat PERL5LIB as undefined if it has a zero-length value. |
| 4661 | */ |
| 4662 | #if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV) |
| 4663 | if (perl5lib && *perl5lib != '\0') |
| 4664 | #else |
| 4665 | if (perl5lib) |
| 4666 | #endif |
| 4667 | incpush_use_sep(perl5lib, 0, INCPUSH_ADD_SUB_DIRS); |
| 4668 | else { |
| 4669 | s = PerlEnv_getenv("PERLLIB"); |
| 4670 | if (s) |
| 4671 | incpush_use_sep(s, 0, 0); |
| 4672 | } |
| 4673 | #else /* VMS */ |
| 4674 | /* Treat PERL5?LIB as a possible search list logical name -- the |
| 4675 | * "natural" VMS idiom for a Unix path string. We allow each |
| 4676 | * element to be a set of |-separated directories for compatibility. |
| 4677 | */ |
| 4678 | char buf[256]; |
| 4679 | int idx = 0; |
| 4680 | if (vmstrnenv("PERL5LIB",buf,0,NULL,0)) |
| 4681 | do { |
| 4682 | incpush_use_sep(buf, 0, INCPUSH_ADD_SUB_DIRS); |
| 4683 | } while (vmstrnenv("PERL5LIB",buf,++idx,NULL,0)); |
| 4684 | else { |
| 4685 | while (vmstrnenv("PERLLIB",buf,idx++,NULL,0)) |
| 4686 | incpush_use_sep(buf, 0, 0); |
| 4687 | } |
| 4688 | #endif /* VMS */ |
| 4689 | } |
| 4690 | |
| 4691 | #ifndef PERL_IS_MINIPERL |
| 4692 | /* miniperl gets just -I..., the split of $ENV{PERL5LIB}, and "." in @INC |
| 4693 | (and not the architecture specific directories from $ENV{PERL5LIB}) */ |
| 4694 | |
| 4695 | #include "perl_inc_macro.h" |
| 4696 | /* Use the ~-expanded versions of APPLLIB (undocumented), |
| 4697 | SITEARCH, SITELIB, VENDORARCH, VENDORLIB, ARCHLIB and PRIVLIB |
| 4698 | */ |
| 4699 | INCPUSH_APPLLIB_EXP |
| 4700 | INCPUSH_SITEARCH_EXP |
| 4701 | INCPUSH_SITELIB_EXP |
| 4702 | INCPUSH_PERL_VENDORARCH_EXP |
| 4703 | INCPUSH_PERL_VENDORLIB_EXP |
| 4704 | INCPUSH_ARCHLIB_EXP |
| 4705 | INCPUSH_PRIVLIB_EXP |
| 4706 | INCPUSH_PERL_OTHERLIBDIRS |
| 4707 | INCPUSH_PERL5LIB |
| 4708 | INCPUSH_APPLLIB_OLD_EXP |
| 4709 | INCPUSH_SITELIB_STEM |
| 4710 | INCPUSH_PERL_VENDORLIB_STEM |
| 4711 | INCPUSH_PERL_OTHERLIBDIRS_ARCHONLY |
| 4712 | |
| 4713 | #endif /* !PERL_IS_MINIPERL */ |
| 4714 | |
| 4715 | if (!TAINTING_get) { |
| 4716 | #if !defined(PERL_IS_MINIPERL) && defined(DEFAULT_INC_EXCLUDES_DOT) |
| 4717 | const char * const unsafe = PerlEnv_getenv("PERL_USE_UNSAFE_INC"); |
| 4718 | if (unsafe && strEQ(unsafe, "1")) |
| 4719 | #endif |
| 4720 | S_incpush(aTHX_ STR_WITH_LEN("."), 0); |
| 4721 | } |
| 4722 | } |
| 4723 | |
| 4724 | #if defined(DOSISH) || defined(__SYMBIAN32__) |
| 4725 | # define PERLLIB_SEP ';' |
| 4726 | #elif defined(__VMS) |
| 4727 | # define PERLLIB_SEP PL_perllib_sep |
| 4728 | #else |
| 4729 | # define PERLLIB_SEP ':' |
| 4730 | #endif |
| 4731 | #ifndef PERLLIB_MANGLE |
| 4732 | # define PERLLIB_MANGLE(s,n) (s) |
| 4733 | #endif |
| 4734 | |
| 4735 | #ifndef PERL_IS_MINIPERL |
| 4736 | /* Push a directory onto @INC if it exists. |
| 4737 | Generate a new SV if we do this, to save needing to copy the SV we push |
| 4738 | onto @INC */ |
| 4739 | STATIC SV * |
| 4740 | S_incpush_if_exists(pTHX_ AV *const av, SV *dir, SV *const stem) |
| 4741 | { |
| 4742 | Stat_t tmpstatbuf; |
| 4743 | |
| 4744 | PERL_ARGS_ASSERT_INCPUSH_IF_EXISTS; |
| 4745 | |
| 4746 | if (PerlLIO_stat(SvPVX_const(dir), &tmpstatbuf) >= 0 && |
| 4747 | S_ISDIR(tmpstatbuf.st_mode)) { |
| 4748 | av_push(av, dir); |
| 4749 | dir = newSVsv(stem); |
| 4750 | } else { |
| 4751 | /* Truncate dir back to stem. */ |
| 4752 | SvCUR_set(dir, SvCUR(stem)); |
| 4753 | } |
| 4754 | return dir; |
| 4755 | } |
| 4756 | #endif |
| 4757 | |
| 4758 | STATIC SV * |
| 4759 | S_mayberelocate(pTHX_ const char *const dir, STRLEN len, U32 flags) |
| 4760 | { |
| 4761 | const U8 canrelocate = (U8)flags & INCPUSH_CAN_RELOCATE; |
| 4762 | SV *libdir; |
| 4763 | |
| 4764 | PERL_ARGS_ASSERT_MAYBERELOCATE; |
| 4765 | assert(len > 0); |
| 4766 | |
| 4767 | /* I am not convinced that this is valid when PERLLIB_MANGLE is |
| 4768 | defined to so something (in os2/os2.c), but the code has been |
| 4769 | this way, ignoring any possible changed of length, since |
| 4770 | 760ac839baf413929cd31cc32ffd6dba6b781a81 (5.003_02) so I'll leave |
| 4771 | it be. */ |
| 4772 | libdir = newSVpvn(PERLLIB_MANGLE(dir, len), len); |
| 4773 | |
| 4774 | #ifdef VMS |
| 4775 | { |
| 4776 | char *unix; |
| 4777 | |
| 4778 | if ((unix = tounixspec_ts(SvPV(libdir,len),NULL)) != NULL) { |
| 4779 | len = strlen(unix); |
| 4780 | while (len > 1 && unix[len-1] == '/') len--; /* Cosmetic */ |
| 4781 | sv_usepvn(libdir,unix,len); |
| 4782 | } |
| 4783 | else |
| 4784 | PerlIO_printf(Perl_error_log, |
| 4785 | "Failed to unixify @INC element \"%s\"\n", |
| 4786 | SvPV_nolen_const(libdir)); |
| 4787 | } |
| 4788 | #endif |
| 4789 | |
| 4790 | /* Do the if() outside the #ifdef to avoid warnings about an unused |
| 4791 | parameter. */ |
| 4792 | if (canrelocate) { |
| 4793 | #ifdef PERL_RELOCATABLE_INC |
| 4794 | /* |
| 4795 | * Relocatable include entries are marked with a leading .../ |
| 4796 | * |
| 4797 | * The algorithm is |
| 4798 | * 0: Remove that leading ".../" |
| 4799 | * 1: Remove trailing executable name (anything after the last '/') |
| 4800 | * from the perl path to give a perl prefix |
| 4801 | * Then |
| 4802 | * While the @INC element starts "../" and the prefix ends with a real |
| 4803 | * directory (ie not . or ..) chop that real directory off the prefix |
| 4804 | * and the leading "../" from the @INC element. ie a logical "../" |
| 4805 | * cleanup |
| 4806 | * Finally concatenate the prefix and the remainder of the @INC element |
| 4807 | * The intent is that /usr/local/bin/perl and .../../lib/perl5 |
| 4808 | * generates /usr/local/lib/perl5 |
| 4809 | */ |
| 4810 | const char *libpath = SvPVX(libdir); |
| 4811 | STRLEN libpath_len = SvCUR(libdir); |
| 4812 | if (memBEGINs(libpath, libpath_len, ".../")) { |
| 4813 | /* Game on! */ |
| 4814 | SV * const caret_X = get_sv("\030", 0); |
| 4815 | /* Going to use the SV just as a scratch buffer holding a C |
| 4816 | string: */ |
| 4817 | SV *prefix_sv; |
| 4818 | char *prefix; |
| 4819 | char *lastslash; |
| 4820 | |
| 4821 | /* $^X is *the* source of taint if tainting is on, hence |
| 4822 | SvPOK() won't be true. */ |
| 4823 | assert(caret_X); |
| 4824 | assert(SvPOKp(caret_X)); |
| 4825 | prefix_sv = newSVpvn_flags(SvPVX(caret_X), SvCUR(caret_X), |
| 4826 | SvUTF8(caret_X)); |
| 4827 | /* Firstly take off the leading .../ |
| 4828 | If all else fail we'll do the paths relative to the current |
| 4829 | directory. */ |
| 4830 | sv_chop(libdir, libpath + 4); |
| 4831 | /* Don't use SvPV as we're intentionally bypassing taining, |
| 4832 | mortal copies that the mg_get of tainting creates, and |
| 4833 | corruption that seems to come via the save stack. |
| 4834 | I guess that the save stack isn't correctly set up yet. */ |
| 4835 | libpath = SvPVX(libdir); |
| 4836 | libpath_len = SvCUR(libdir); |
| 4837 | |
| 4838 | prefix = SvPVX(prefix_sv); |
| 4839 | lastslash = (char *) my_memrchr(prefix, '/', |
| 4840 | SvEND(prefix_sv) - prefix); |
| 4841 | |
| 4842 | /* First time in with the *lastslash = '\0' we just wipe off |
| 4843 | the trailing /perl from (say) /usr/foo/bin/perl |
| 4844 | */ |
| 4845 | if (lastslash) { |
| 4846 | SV *tempsv; |
| 4847 | while ((*lastslash = '\0'), /* Do that, come what may. */ |
| 4848 | ( memBEGINs(libpath, libpath_len, "../") |
| 4849 | && (lastslash = |
| 4850 | (char *) my_memrchr(prefix, '/', |
| 4851 | SvEND(prefix_sv) - prefix)))) |
| 4852 | { |
| 4853 | if (lastslash[1] == '\0' |
| 4854 | || (lastslash[1] == '.' |
| 4855 | && (lastslash[2] == '/' /* ends "/." */ |
| 4856 | || (lastslash[2] == '/' |
| 4857 | && lastslash[3] == '/' /* or "/.." */ |
| 4858 | )))) { |
| 4859 | /* Prefix ends "/" or "/." or "/..", any of which |
| 4860 | are fishy, so don't do any more logical cleanup. |
| 4861 | */ |
| 4862 | break; |
| 4863 | } |
| 4864 | /* Remove leading "../" from path */ |
| 4865 | libpath += 3; |
| 4866 | libpath_len -= 3; |
| 4867 | /* Next iteration round the loop removes the last |
| 4868 | directory name from prefix by writing a '\0' in |
| 4869 | the while clause. */ |
| 4870 | } |
| 4871 | /* prefix has been terminated with a '\0' to the correct |
| 4872 | length. libpath points somewhere into the libdir SV. |
| 4873 | We need to join the 2 with '/' and drop the result into |
| 4874 | libdir. */ |
| 4875 | tempsv = Perl_newSVpvf(aTHX_ "%s/%s", prefix, libpath); |
| 4876 | SvREFCNT_dec(libdir); |
| 4877 | /* And this is the new libdir. */ |
| 4878 | libdir = tempsv; |
| 4879 | if (TAINTING_get && |
| 4880 | (PerlProc_getuid() != PerlProc_geteuid() || |
| 4881 | PerlProc_getgid() != PerlProc_getegid())) { |
| 4882 | /* Need to taint relocated paths if running set ID */ |
| 4883 | SvTAINTED_on(libdir); |
| 4884 | } |
| 4885 | } |
| 4886 | SvREFCNT_dec(prefix_sv); |
| 4887 | } |
| 4888 | #endif |
| 4889 | } |
| 4890 | return libdir; |
| 4891 | } |
| 4892 | |
| 4893 | STATIC void |
| 4894 | S_incpush(pTHX_ const char *const dir, STRLEN len, U32 flags) |
| 4895 | { |
| 4896 | #ifndef PERL_IS_MINIPERL |
| 4897 | const U8 using_sub_dirs |
| 4898 | = (U8)flags & (INCPUSH_ADD_VERSIONED_SUB_DIRS |
| 4899 | |INCPUSH_ADD_ARCHONLY_SUB_DIRS|INCPUSH_ADD_OLD_VERS); |
| 4900 | const U8 add_versioned_sub_dirs |
| 4901 | = (U8)flags & INCPUSH_ADD_VERSIONED_SUB_DIRS; |
| 4902 | const U8 add_archonly_sub_dirs |
| 4903 | = (U8)flags & INCPUSH_ADD_ARCHONLY_SUB_DIRS; |
| 4904 | #ifdef PERL_INC_VERSION_LIST |
| 4905 | const U8 addoldvers = (U8)flags & INCPUSH_ADD_OLD_VERS; |
| 4906 | #endif |
| 4907 | #endif |
| 4908 | const U8 unshift = (U8)flags & INCPUSH_UNSHIFT; |
| 4909 | const U8 push_basedir = (flags & INCPUSH_NOT_BASEDIR) ? 0 : 1; |
| 4910 | AV *const inc = GvAVn(PL_incgv); |
| 4911 | |
| 4912 | PERL_ARGS_ASSERT_INCPUSH; |
| 4913 | assert(len > 0); |
| 4914 | |
| 4915 | /* Could remove this vestigial extra block, if we don't mind a lot of |
| 4916 | re-indenting diff noise. */ |
| 4917 | { |
| 4918 | SV *const libdir = mayberelocate(dir, len, flags); |
| 4919 | /* Change 20189146be79a0596543441fa369c6bf7f85103f, to fix RT#6665, |
| 4920 | arranged to unshift #! line -I onto the front of @INC. However, |
| 4921 | -I can add version and architecture specific libraries, and they |
| 4922 | need to go first. The old code assumed that it was always |
| 4923 | pushing. Hence to make it work, need to push the architecture |
| 4924 | (etc) libraries onto a temporary array, then "unshift" that onto |
| 4925 | the front of @INC. */ |
| 4926 | #ifndef PERL_IS_MINIPERL |
| 4927 | AV *const av = (using_sub_dirs) ? (unshift ? newAV() : inc) : NULL; |
| 4928 | |
| 4929 | /* |
| 4930 | * BEFORE pushing libdir onto @INC we may first push version- and |
| 4931 | * archname-specific sub-directories. |
| 4932 | */ |
| 4933 | if (using_sub_dirs) { |
| 4934 | SV *subdir = newSVsv(libdir); |
| 4935 | #ifdef PERL_INC_VERSION_LIST |
| 4936 | /* Configure terminates PERL_INC_VERSION_LIST with a NULL */ |
| 4937 | const char * const incverlist[] = { PERL_INC_VERSION_LIST }; |
| 4938 | const char * const *incver; |
| 4939 | #endif |
| 4940 | |
| 4941 | if (add_versioned_sub_dirs) { |
| 4942 | /* .../version/archname if -d .../version/archname */ |
| 4943 | sv_catpvs(subdir, "/" PERL_FS_VERSION "/" ARCHNAME); |
| 4944 | subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir); |
| 4945 | |
| 4946 | /* .../version if -d .../version */ |
| 4947 | sv_catpvs(subdir, "/" PERL_FS_VERSION); |
| 4948 | subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir); |
| 4949 | } |
| 4950 | |
| 4951 | #ifdef PERL_INC_VERSION_LIST |
| 4952 | if (addoldvers) { |
| 4953 | for (incver = incverlist; *incver; incver++) { |
| 4954 | /* .../xxx if -d .../xxx */ |
| 4955 | Perl_sv_catpvf(aTHX_ subdir, "/%s", *incver); |
| 4956 | subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir); |
| 4957 | } |
| 4958 | } |
| 4959 | #endif |
| 4960 | |
| 4961 | if (add_archonly_sub_dirs) { |
| 4962 | /* .../archname if -d .../archname */ |
| 4963 | sv_catpvs(subdir, "/" ARCHNAME); |
| 4964 | subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir); |
| 4965 | |
| 4966 | } |
| 4967 | |
| 4968 | assert (SvREFCNT(subdir) == 1); |
| 4969 | SvREFCNT_dec(subdir); |
| 4970 | } |
| 4971 | #endif /* !PERL_IS_MINIPERL */ |
| 4972 | /* finally add this lib directory at the end of @INC */ |
| 4973 | if (unshift) { |
| 4974 | #ifdef PERL_IS_MINIPERL |
| 4975 | const Size_t extra = 0; |
| 4976 | #else |
| 4977 | Size_t extra = av_tindex(av) + 1; |
| 4978 | #endif |
| 4979 | av_unshift(inc, extra + push_basedir); |
| 4980 | if (push_basedir) |
| 4981 | av_store(inc, extra, libdir); |
| 4982 | #ifndef PERL_IS_MINIPERL |
| 4983 | while (extra--) { |
| 4984 | /* av owns a reference, av_store() expects to be donated a |
| 4985 | reference, and av expects to be sane when it's cleared. |
| 4986 | If I wanted to be naughty and wrong, I could peek inside the |
| 4987 | implementation of av_clear(), realise that it uses |
| 4988 | SvREFCNT_dec() too, so av's array could be a run of NULLs, |
| 4989 | and so directly steal from it (with a memcpy() to inc, and |
| 4990 | then memset() to NULL them out. But people copy code from the |
| 4991 | core expecting it to be best practise, so let's use the API. |
| 4992 | Although studious readers will note that I'm not checking any |
| 4993 | return codes. */ |
| 4994 | av_store(inc, extra, SvREFCNT_inc(*av_fetch(av, extra, FALSE))); |
| 4995 | } |
| 4996 | SvREFCNT_dec(av); |
| 4997 | #endif |
| 4998 | } |
| 4999 | else if (push_basedir) { |
| 5000 | av_push(inc, libdir); |
| 5001 | } |
| 5002 | |
| 5003 | if (!push_basedir) { |
| 5004 | assert (SvREFCNT(libdir) == 1); |
| 5005 | SvREFCNT_dec(libdir); |
| 5006 | } |
| 5007 | } |
| 5008 | } |
| 5009 | |
| 5010 | STATIC void |
| 5011 | S_incpush_use_sep(pTHX_ const char *p, STRLEN len, U32 flags) |
| 5012 | { |
| 5013 | const char *s; |
| 5014 | const char *end; |
| 5015 | /* This logic has been broken out from S_incpush(). It may be possible to |
| 5016 | simplify it. */ |
| 5017 | |
| 5018 | PERL_ARGS_ASSERT_INCPUSH_USE_SEP; |
| 5019 | |
| 5020 | /* perl compiled with -DPERL_RELOCATABLE_INCPUSH will ignore the len |
| 5021 | * argument to incpush_use_sep. This allows creation of relocatable |
| 5022 | * Perl distributions that patch the binary at install time. Those |
| 5023 | * distributions will have to provide their own relocation tools; this |
| 5024 | * is not a feature otherwise supported by core Perl. |
| 5025 | */ |
| 5026 | #ifndef PERL_RELOCATABLE_INCPUSH |
| 5027 | if (!len) |
| 5028 | #endif |
| 5029 | len = strlen(p); |
| 5030 | |
| 5031 | end = p + len; |
| 5032 | |
| 5033 | /* Break at all separators */ |
| 5034 | while ((s = (const char*)memchr(p, PERLLIB_SEP, end - p))) { |
| 5035 | if (s == p) { |
| 5036 | /* skip any consecutive separators */ |
| 5037 | |
| 5038 | /* Uncomment the next line for PATH semantics */ |
| 5039 | /* But you'll need to write tests */ |
| 5040 | /* av_push(GvAVn(PL_incgv), newSVpvs(".")); */ |
| 5041 | } else { |
| 5042 | incpush(p, (STRLEN)(s - p), flags); |
| 5043 | } |
| 5044 | p = s + 1; |
| 5045 | } |
| 5046 | if (p != end) |
| 5047 | incpush(p, (STRLEN)(end - p), flags); |
| 5048 | |
| 5049 | } |
| 5050 | |
| 5051 | void |
| 5052 | Perl_call_list(pTHX_ I32 oldscope, AV *paramList) |
| 5053 | { |
| 5054 | SV *atsv; |
| 5055 | volatile const line_t oldline = PL_curcop ? CopLINE(PL_curcop) : 0; |
| 5056 | CV *cv; |
| 5057 | STRLEN len; |
| 5058 | int ret; |
| 5059 | dJMPENV; |
| 5060 | |
| 5061 | PERL_ARGS_ASSERT_CALL_LIST; |
| 5062 | |
| 5063 | while (av_tindex(paramList) >= 0) { |
| 5064 | cv = MUTABLE_CV(av_shift(paramList)); |
| 5065 | if (PL_savebegin) { |
| 5066 | if (paramList == PL_beginav) { |
| 5067 | /* save PL_beginav for compiler */ |
| 5068 | Perl_av_create_and_push(aTHX_ &PL_beginav_save, MUTABLE_SV(cv)); |
| 5069 | } |
| 5070 | else if (paramList == PL_checkav) { |
| 5071 | /* save PL_checkav for compiler */ |
| 5072 | Perl_av_create_and_push(aTHX_ &PL_checkav_save, MUTABLE_SV(cv)); |
| 5073 | } |
| 5074 | else if (paramList == PL_unitcheckav) { |
| 5075 | /* save PL_unitcheckav for compiler */ |
| 5076 | Perl_av_create_and_push(aTHX_ &PL_unitcheckav_save, MUTABLE_SV(cv)); |
| 5077 | } |
| 5078 | } else { |
| 5079 | SAVEFREESV(cv); |
| 5080 | } |
| 5081 | JMPENV_PUSH(ret); |
| 5082 | switch (ret) { |
| 5083 | case 0: |
| 5084 | CALL_LIST_BODY(cv); |
| 5085 | atsv = ERRSV; |
| 5086 | (void)SvPV_const(atsv, len); |
| 5087 | if (len) { |
| 5088 | PL_curcop = &PL_compiling; |
| 5089 | CopLINE_set(PL_curcop, oldline); |
| 5090 | if (paramList == PL_beginav) |
| 5091 | sv_catpvs(atsv, "BEGIN failed--compilation aborted"); |
| 5092 | else |
| 5093 | Perl_sv_catpvf(aTHX_ atsv, |
| 5094 | "%s failed--call queue aborted", |
| 5095 | paramList == PL_checkav ? "CHECK" |
| 5096 | : paramList == PL_initav ? "INIT" |
| 5097 | : paramList == PL_unitcheckav ? "UNITCHECK" |
| 5098 | : "END"); |
| 5099 | while (PL_scopestack_ix > oldscope) |
| 5100 | LEAVE; |
| 5101 | JMPENV_POP; |
| 5102 | Perl_croak(aTHX_ "%" SVf, SVfARG(atsv)); |
| 5103 | } |
| 5104 | break; |
| 5105 | case 1: |
| 5106 | STATUS_ALL_FAILURE; |
| 5107 | /* FALLTHROUGH */ |
| 5108 | case 2: |
| 5109 | /* my_exit() was called */ |
| 5110 | while (PL_scopestack_ix > oldscope) |
| 5111 | LEAVE; |
| 5112 | FREETMPS; |
| 5113 | SET_CURSTASH(PL_defstash); |
| 5114 | PL_curcop = &PL_compiling; |
| 5115 | CopLINE_set(PL_curcop, oldline); |
| 5116 | JMPENV_POP; |
| 5117 | my_exit_jump(); |
| 5118 | NOT_REACHED; /* NOTREACHED */ |
| 5119 | case 3: |
| 5120 | if (PL_restartop) { |
| 5121 | PL_curcop = &PL_compiling; |
| 5122 | CopLINE_set(PL_curcop, oldline); |
| 5123 | JMPENV_JUMP(3); |
| 5124 | } |
| 5125 | PerlIO_printf(Perl_error_log, "panic: restartop in call_list\n"); |
| 5126 | FREETMPS; |
| 5127 | break; |
| 5128 | } |
| 5129 | JMPENV_POP; |
| 5130 | } |
| 5131 | } |
| 5132 | |
| 5133 | void |
| 5134 | Perl_my_exit(pTHX_ U32 status) |
| 5135 | { |
| 5136 | if (PL_exit_flags & PERL_EXIT_ABORT) { |
| 5137 | abort(); |
| 5138 | } |
| 5139 | if (PL_exit_flags & PERL_EXIT_WARN) { |
| 5140 | PL_exit_flags |= PERL_EXIT_ABORT; /* Protect against reentrant calls */ |
| 5141 | Perl_warn(aTHX_ "Unexpected exit %lu", (unsigned long)status); |
| 5142 | PL_exit_flags &= ~PERL_EXIT_ABORT; |
| 5143 | } |
| 5144 | switch (status) { |
| 5145 | case 0: |
| 5146 | STATUS_ALL_SUCCESS; |
| 5147 | break; |
| 5148 | case 1: |
| 5149 | STATUS_ALL_FAILURE; |
| 5150 | break; |
| 5151 | default: |
| 5152 | STATUS_EXIT_SET(status); |
| 5153 | break; |
| 5154 | } |
| 5155 | my_exit_jump(); |
| 5156 | } |
| 5157 | |
| 5158 | void |
| 5159 | Perl_my_failure_exit(pTHX) |
| 5160 | { |
| 5161 | #ifdef VMS |
| 5162 | /* We have been called to fall on our sword. The desired exit code |
| 5163 | * should be already set in STATUS_UNIX, but could be shifted over |
| 5164 | * by 8 bits. STATUS_UNIX_EXIT_SET will handle the cases where a |
| 5165 | * that code is set. |
| 5166 | * |
| 5167 | * If an error code has not been set, then force the issue. |
| 5168 | */ |
| 5169 | if (MY_POSIX_EXIT) { |
| 5170 | |
| 5171 | /* According to the die_exit.t tests, if errno is non-zero */ |
| 5172 | /* It should be used for the error status. */ |
| 5173 | |
| 5174 | if (errno == EVMSERR) { |
| 5175 | STATUS_NATIVE = vaxc$errno; |
| 5176 | } else { |
| 5177 | |
| 5178 | /* According to die_exit.t tests, if the child_exit code is */ |
| 5179 | /* also zero, then we need to exit with a code of 255 */ |
| 5180 | if ((errno != 0) && (errno < 256)) |
| 5181 | STATUS_UNIX_EXIT_SET(errno); |
| 5182 | else if (STATUS_UNIX < 255) { |
| 5183 | STATUS_UNIX_EXIT_SET(255); |
| 5184 | } |
| 5185 | |
| 5186 | } |
| 5187 | |
| 5188 | /* The exit code could have been set by $? or vmsish which |
| 5189 | * means that it may not have fatal set. So convert |
| 5190 | * success/warning codes to fatal with out changing |
| 5191 | * the POSIX status code. The severity makes VMS native |
| 5192 | * status handling work, while UNIX mode programs use the |
| 5193 | * the POSIX exit codes. |
| 5194 | */ |
| 5195 | if ((STATUS_NATIVE & (STS$K_SEVERE|STS$K_ERROR)) == 0) { |
| 5196 | STATUS_NATIVE &= STS$M_COND_ID; |
| 5197 | STATUS_NATIVE |= STS$K_ERROR | STS$M_INHIB_MSG; |
| 5198 | } |
| 5199 | } |
| 5200 | else { |
| 5201 | /* Traditionally Perl on VMS always expects a Fatal Error. */ |
| 5202 | if (vaxc$errno & 1) { |
| 5203 | |
| 5204 | /* So force success status to failure */ |
| 5205 | if (STATUS_NATIVE & 1) |
| 5206 | STATUS_ALL_FAILURE; |
| 5207 | } |
| 5208 | else { |
| 5209 | if (!vaxc$errno) { |
| 5210 | STATUS_UNIX = EINTR; /* In case something cares */ |
| 5211 | STATUS_ALL_FAILURE; |
| 5212 | } |
| 5213 | else { |
| 5214 | int severity; |
| 5215 | STATUS_NATIVE = vaxc$errno; /* Should already be this */ |
| 5216 | |
| 5217 | /* Encode the severity code */ |
| 5218 | severity = STATUS_NATIVE & STS$M_SEVERITY; |
| 5219 | STATUS_UNIX = (severity ? severity : 1) << 8; |
| 5220 | |
| 5221 | /* Perl expects this to be a fatal error */ |
| 5222 | if (severity != STS$K_SEVERE) |
| 5223 | STATUS_ALL_FAILURE; |
| 5224 | } |
| 5225 | } |
| 5226 | } |
| 5227 | |
| 5228 | #else |
| 5229 | int exitstatus; |
| 5230 | int eno = errno; |
| 5231 | if (eno & 255) |
| 5232 | STATUS_UNIX_SET(eno); |
| 5233 | else { |
| 5234 | exitstatus = STATUS_UNIX >> 8; |
| 5235 | if (exitstatus & 255) |
| 5236 | STATUS_UNIX_SET(exitstatus); |
| 5237 | else |
| 5238 | STATUS_UNIX_SET(255); |
| 5239 | } |
| 5240 | #endif |
| 5241 | if (PL_exit_flags & PERL_EXIT_ABORT) { |
| 5242 | abort(); |
| 5243 | } |
| 5244 | if (PL_exit_flags & PERL_EXIT_WARN) { |
| 5245 | PL_exit_flags |= PERL_EXIT_ABORT; /* Protect against reentrant calls */ |
| 5246 | Perl_warn(aTHX_ "Unexpected exit failure %ld", (long)PL_statusvalue); |
| 5247 | PL_exit_flags &= ~PERL_EXIT_ABORT; |
| 5248 | } |
| 5249 | my_exit_jump(); |
| 5250 | } |
| 5251 | |
| 5252 | STATIC void |
| 5253 | S_my_exit_jump(pTHX) |
| 5254 | { |
| 5255 | if (PL_e_script) { |
| 5256 | SvREFCNT_dec(PL_e_script); |
| 5257 | PL_e_script = NULL; |
| 5258 | } |
| 5259 | |
| 5260 | POPSTACK_TO(PL_mainstack); |
| 5261 | if (cxstack_ix >= 0) { |
| 5262 | dounwind(-1); |
| 5263 | cx_popblock(cxstack); |
| 5264 | } |
| 5265 | LEAVE_SCOPE(0); |
| 5266 | |
| 5267 | JMPENV_JUMP(2); |
| 5268 | } |
| 5269 | |
| 5270 | static I32 |
| 5271 | read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen) |
| 5272 | { |
| 5273 | const char * const p = SvPVX_const(PL_e_script); |
| 5274 | const char * const e = SvEND(PL_e_script); |
| 5275 | const char *nl = (char *) memchr(p, '\n', e - p); |
| 5276 | |
| 5277 | PERL_UNUSED_ARG(idx); |
| 5278 | PERL_UNUSED_ARG(maxlen); |
| 5279 | |
| 5280 | nl = (nl) ? nl+1 : e; |
| 5281 | if (nl-p == 0) { |
| 5282 | filter_del(read_e_script); |
| 5283 | return 0; |
| 5284 | } |
| 5285 | sv_catpvn(buf_sv, p, nl-p); |
| 5286 | sv_chop(PL_e_script, nl); |
| 5287 | return 1; |
| 5288 | } |
| 5289 | |
| 5290 | /* removes boilerplate code at the end of each boot_Module xsub */ |
| 5291 | void |
| 5292 | Perl_xs_boot_epilog(pTHX_ const I32 ax) |
| 5293 | { |
| 5294 | if (PL_unitcheckav) |
| 5295 | call_list(PL_scopestack_ix, PL_unitcheckav); |
| 5296 | XSRETURN_YES; |
| 5297 | } |
| 5298 | |
| 5299 | /* |
| 5300 | * ex: set ts=8 sts=4 sw=4 et: |
| 5301 | */ |