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simplify Perl_xs_apiversion_bootcheck
[perl5.git] / perl.c
CommitLineData
4b88f280 1#line 2 "perl.c"
a0d0e21e
LW		 2/* perl.c
3 *
737f4459 4 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
2eee27d7 5 * 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
010d7370 6 * by Larry Wall and others
a687059c 7 *
352d5a3a
LW		 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.
a687059c 10 *
8d063cd8
LW		 11 */
12
a0d0e21e 13/*
4ac71550
TC		 14 * A ship then new they built for him
15 * of mithril and of elven-glass
cdad3b53 16 * --from Bilbo's song of Eärendil
4ac71550
TC		 17 *
18 * [p.236 of _The Lord of the Rings_, II/i: "Many Meetings"]
a0d0e21e 19 */
45d8adaa 20
166f8a29
DM		 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()
ddfa107c 24 * function of the interpreter; that can be found in perlmain.c
166f8a29
DM		 25 */
26
c44493f1 27#if defined(PERL_IS_MINIPERL) && !defined(USE_SITECUSTOMIZE)
43c0c913
NC		 28# define USE_SITECUSTOMIZE
29#endif
30
378cc40b 31#include "EXTERN.h"
864dbfa3 32#define PERL_IN_PERL_C
378cc40b 33#include "perl.h"
e3321bb0 34#include "patchlevel.h" /* for local_patches */
4a5df386 35#include "XSUB.h"
7b8dd5f4 36#include "charclass_invlists.h"
378cc40b 37
011f1a1a
JH		 38#ifdef NETWARE
39#include "nwutil.h"
011f1a1a
JH		 40#endif
41
2aa47728 42#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
bf357333
NC		 43# ifdef I_SYSUIO
44# include <sys/uio.h>
45# endif
46
47union control_un {
48 struct cmsghdr cm;
49 char control[CMSG_SPACE(sizeof(int))];
50};
51
2aa47728
NC		 52#endif
53
5311654c
JH		 54#ifndef HZ
55# ifdef CLK_TCK
56# define HZ CLK_TCK
57# else
58# define HZ 60
59# endif
60#endif
61
7114a2d2 62#if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
20ce7b12 63char *getenv (char *); /* Usually in <stdlib.h> */
54310121 64#endif
65
acfe0abc 66static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
0cb96387 67
cc69b689 68#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
b24bc095 69# define validate_suid(rsfp) NOOP
cc69b689 70#else
b24bc095 71# define validate_suid(rsfp) S_validate_suid(aTHX_ rsfp)
a687059c 72#endif
8d063cd8 73
d6f07c05
AL		 74#define CALL_BODY_SUB(myop) \
75 if (PL_op == (myop)) \
139d0ce6 76 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); \
d6f07c05
AL		 77 if (PL_op) \
78 CALLRUNOPS(aTHX);
79
80#define CALL_LIST_BODY(cv) \
81 PUSHMARK(PL_stack_sp); \
9a8aa25b 82 call_sv(MUTABLE_SV((cv)), G_EVAL|G_DISCARD|G_VOID);
d6f07c05 83
e6827a76 84static void
daa7d858 85S_init_tls_and_interp(PerlInterpreter *my_perl)
e6827a76 86{
27da23d5 87 dVAR;
e6827a76
NC		 88 if (!PL_curinterp) {
89 PERL_SET_INTERP(my_perl);
3db8f154 90#if defined(USE_ITHREADS)
e6827a76
NC		 91 INIT_THREADS;
92 ALLOC_THREAD_KEY;
93 PERL_SET_THX(my_perl);
94 OP_REFCNT_INIT;
e8570548 95 OP_CHECK_MUTEX_INIT;
71ad1b0c 96 HINTS_REFCNT_INIT;
e6827a76 97 MUTEX_INIT(&PL_dollarzero_mutex);
016af4f1
DM		 98 MUTEX_INIT(&PL_my_ctx_mutex);
99# endif
e6827a76 100 }
c0bce9aa
NC		 101#if defined(USE_ITHREADS)
102 else
103#else
104 /* This always happens for non-ithreads */
105#endif
106 {
e6827a76
NC		 107 PERL_SET_THX(my_perl);
108 }
109}
06d86050 110
cbec8ebe
DM		 111
112/* these implement the PERL_SYS_INIT, PERL_SYS_INIT3, PERL_SYS_TERM macros */
113
114void
115Perl_sys_init(int* argc, char*** argv)
116{
4fc0badb 117 dVAR;
7918f24d
NC		 118
119 PERL_ARGS_ASSERT_SYS_INIT;
120
cbec8ebe
DM		 121 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
122 PERL_UNUSED_ARG(argv);
123 PERL_SYS_INIT_BODY(argc, argv);
124}
125
126void
127Perl_sys_init3(int* argc, char*** argv, char*** env)
128{
4fc0badb 129 dVAR;
7918f24d
NC		 130
131 PERL_ARGS_ASSERT_SYS_INIT3;
132
cbec8ebe
DM		 133 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
134 PERL_UNUSED_ARG(argv);
135 PERL_UNUSED_ARG(env);
136 PERL_SYS_INIT3_BODY(argc, argv, env);
137}
138
139void
88772978 140Perl_sys_term(void)
cbec8ebe 141{
4fc0badb 142 dVAR;
bf81751b
DM		 143 if (!PL_veto_cleanup) {
144 PERL_SYS_TERM_BODY();
145 }
cbec8ebe
DM		 146}
147
148
32e30700
GS		 149#ifdef PERL_IMPLICIT_SYS
150PerlInterpreter *
7766f137
GS		 151perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
152 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
32e30700
GS		 153 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
154 struct IPerlDir* ipD, struct IPerlSock* ipS,
155 struct IPerlProc* ipP)
156{
157 PerlInterpreter *my_perl;
7918f24d
NC		 158
159 PERL_ARGS_ASSERT_PERL_ALLOC_USING;
160
9f653bb5 161 /* Newx() needs interpreter, so call malloc() instead */
32e30700 162 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
e6827a76 163 S_init_tls_and_interp(my_perl);
32e30700
GS		 164 Zero(my_perl, 1, PerlInterpreter);
165 PL_Mem = ipM;
7766f137
GS		 166 PL_MemShared = ipMS;
167 PL_MemParse = ipMP;
32e30700
GS		 168 PL_Env = ipE;
169 PL_StdIO = ipStd;
170 PL_LIO = ipLIO;
171 PL_Dir = ipD;
172 PL_Sock = ipS;
173 PL_Proc = ipP;
7cb608b5 174 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
7766f137 175
32e30700
GS		 176 return my_perl;
177}
178#else
954c1994
GS		 179
180/*
ccfc67b7
JH		 181=head1 Embedding Functions
182
954c1994
GS		 183=for apidoc perl_alloc
184
185Allocates a new Perl interpreter. See L<perlembed>.
186
187=cut
188*/
189
93a17b20 190PerlInterpreter *
cea2e8a9 191perl_alloc(void)
79072805 192{
cea2e8a9 193 PerlInterpreter *my_perl;
79072805 194
9f653bb5 195 /* Newx() needs interpreter, so call malloc() instead */
e8ee3774 196 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 197
e6827a76 198 S_init_tls_and_interp(my_perl);
7cb608b5 199#ifndef PERL_TRACK_MEMPOOL
07409e01 200 return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter);
7cb608b5
NC		 201#else
202 Zero(my_perl, 1, PerlInterpreter);
203 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
204 return my_perl;
205#endif
79072805 206}
32e30700 207#endif /* PERL_IMPLICIT_SYS */
79072805 208
954c1994
GS		 209/*
210=for apidoc perl_construct
211
212Initializes a new Perl interpreter. See L<perlembed>.
213
214=cut
215*/
216
79072805 217void
0cb96387 218perl_construct(pTHXx)
79072805 219{
27da23d5 220 dVAR;
7918f24d
NC		 221
222 PERL_ARGS_ASSERT_PERL_CONSTRUCT;
223
8990e307 224#ifdef MULTIPLICITY
54aff467 225 init_interp();
ac27b0f5 226 PL_perl_destruct_level = 1;
54aff467 227#else
7918f24d 228 PERL_UNUSED_ARG(my_perl);
54aff467
GS		 229 if (PL_perl_destruct_level > 0)
230 init_interp();
231#endif
34caed6d
DM		 232 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
233
75d476e2
S		 234#ifdef PERL_TRACE_OPS
235 Zero(PL_op_exec_cnt, OP_max+2, UV);
236#endif
237
0d96b528 238 init_constants();
34caed6d
DM		 239
240 SvREADONLY_on(&PL_sv_placeholder);
fe54beba 241 SvREFCNT(&PL_sv_placeholder) = SvREFCNT_IMMORTAL;
34caed6d
DM		 242
243 PL_sighandlerp = (Sighandler_t) Perl_sighandler;
ca0c25f6 244#ifdef PERL_USES_PL_PIDSTATUS
34caed6d 245 PL_pidstatus = newHV();
ca0c25f6 246#endif
79072805 247
396482e1 248 PL_rs = newSVpvs("\n");
dc92893f 249
cea2e8a9 250 init_stacks();
79072805 251
748a9306 252 init_ids();
a5f75d66 253
312caa8e 254 JMPENV_BOOTSTRAP;
f86702cc 255 STATUS_ALL_SUCCESS;
256
0672f40e 257 init_i18nl10n(1);
0b5b802d 258
ab821d7f 259#if defined(LOCAL_PATCH_COUNT)
3280af22 260 PL_localpatches = local_patches; /* For possible -v */
ab821d7f 261#endif
262
52853b95
GS		 263#ifdef HAVE_INTERP_INTERN
264 sys_intern_init();
265#endif
266
3a1ee7e8 267 PerlIO_init(aTHX); /* Hook to IO system */
760ac839 268
3280af22
NIS		 269 PL_fdpid = newAV(); /* for remembering popen pids by fd */
270 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
396482e1 271 PL_errors = newSVpvs("");
76f68e9b
MHM		 272 sv_setpvs(PERL_DEBUG_PAD(0), ""); /* For regex debugging. */
273 sv_setpvs(PERL_DEBUG_PAD(1), ""); /* ext/re needs these */
274 sv_setpvs(PERL_DEBUG_PAD(2), ""); /* even without DEBUGGING. */
1fcf4c12 275#ifdef USE_ITHREADS
402d2eb1
NC		 276 /* First entry is a list of empty elements. It needs to be initialised
277 else all hell breaks loose in S_find_uninit_var(). */
278 Perl_av_create_and_push(aTHX_ &PL_regex_padav, newSVpvs(""));
13137afc 279 PL_regex_pad = AvARRAY(PL_regex_padav);
d4d03940 280 Newxz(PL_stashpad, PL_stashpadmax, HV *);
1fcf4c12 281#endif
e5dd39fc 282#ifdef USE_REENTRANT_API
59bd0823 283 Perl_reentrant_init(aTHX);
e5dd39fc 284#endif
7dc86639
YO		 285#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
286 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
287 * This MUST be done before any hash stores or fetches take place.
288 * If you set PL_hash_seed (and presumably also PL_hash_seed_set)
289 * yourself, it is your responsibility to provide a good random seed!
290 * You can also define PERL_HASH_SEED in compile time, see hv.h.
291 *
292 * XXX: fix this comment */
293 if (PL_hash_seed_set == FALSE) {
294 Perl_get_hash_seed(aTHX_ PL_hash_seed);
295 PL_hash_seed_set= TRUE;
296 }
297#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
3d47000e
AB		 298
299 /* Note that strtab is a rather special HV. Assumptions are made
300 about not iterating on it, and not adding tie magic to it.
301 It is properly deallocated in perl_destruct() */
302 PL_strtab = newHV();
303
3d47000e
AB		 304 HvSHAREKEYS_off(PL_strtab); /* mandatory */
305 hv_ksplit(PL_strtab, 512);
306
a38ab475
RZ		 307 Zero(PL_sv_consts, SV_CONSTS_COUNT, SV*);
308
2f42fcb0
JH		 309#ifndef PERL_MICRO
310# ifdef USE_ENVIRON_ARRAY
0631ea03 311 PL_origenviron = environ;
2f42fcb0 312# endif
0631ea03
AB		 313#endif
314
5311654c 315 /* Use sysconf(_SC_CLK_TCK) if available, if not
dbc1d986 316 * available or if the sysconf() fails, use the HZ.
27da23d5
JH		 317 * The HZ if not originally defined has been by now
318 * been defined as CLK_TCK, if available. */
b6c36746 319#if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK)
5311654c
JH		 320 PL_clocktick = sysconf(_SC_CLK_TCK);
321 if (PL_clocktick <= 0)
322#endif
323 PL_clocktick = HZ;
324
081fc587
AB		 325 PL_stashcache = newHV();
326
e8e3635e 327 PL_patchlevel = newSVpvs("v" PERL_VERSION_STRING);
1e8125c6 328 PL_apiversion = newSVpvs("v" PERL_API_VERSION_STRING);
d7aa5382 329
27da23d5
JH		 330#ifdef HAS_MMAP
331 if (!PL_mmap_page_size) {
332#if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
333 {
334 SETERRNO(0, SS_NORMAL);
335# ifdef _SC_PAGESIZE
336 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
337# else
338 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
339# endif
340 if ((long) PL_mmap_page_size < 0) {
341 if (errno) {
44f8325f 342 SV * const error = ERRSV;
d4c19fe8 343 SvUPGRADE(error, SVt_PV);
0510663f 344 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
27da23d5
JH		 345 }
346 else
347 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
348 }
349 }
350#else
351# ifdef HAS_GETPAGESIZE
352 PL_mmap_page_size = getpagesize();
353# else
354# if defined(I_SYS_PARAM) && defined(PAGESIZE)
355 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
356# endif
357# endif
358#endif
359 if (PL_mmap_page_size <= 0)
360 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
361 (IV) PL_mmap_page_size);
362 }
363#endif /* HAS_MMAP */
364
365#if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
366 PL_timesbase.tms_utime = 0;
367 PL_timesbase.tms_stime = 0;
368 PL_timesbase.tms_cutime = 0;
369 PL_timesbase.tms_cstime = 0;
370#endif
371
7d113631
NC		 372 PL_osname = Perl_savepvn(aTHX_ STR_WITH_LEN(OSNAME));
373
a3e6e81e 374 PL_registered_mros = newHV();
9e169432
NC		 375 /* Start with 1 bucket, for DFS. It's unlikely we'll need more. */
376 HvMAX(PL_registered_mros) = 0;
a3e6e81e 377
7b8dd5f4
KW		 378 PL_XPosix_ptrs[_CC_ASCII] = _new_invlist_C_array(ASCII_invlist);
379 PL_XPosix_ptrs[_CC_ALPHANUMERIC] = _new_invlist_C_array(XPosixAlnum_invlist);
380 PL_XPosix_ptrs[_CC_ALPHA] = _new_invlist_C_array(XPosixAlpha_invlist);
381 PL_XPosix_ptrs[_CC_BLANK] = _new_invlist_C_array(XPosixBlank_invlist);
382 PL_XPosix_ptrs[_CC_CASED] = _new_invlist_C_array(Cased_invlist);
383 PL_XPosix_ptrs[_CC_CNTRL] = _new_invlist_C_array(XPosixCntrl_invlist);
384 PL_XPosix_ptrs[_CC_DIGIT] = _new_invlist_C_array(XPosixDigit_invlist);
385 PL_XPosix_ptrs[_CC_GRAPH] = _new_invlist_C_array(XPosixGraph_invlist);
386 PL_XPosix_ptrs[_CC_LOWER] = _new_invlist_C_array(XPosixLower_invlist);
387 PL_XPosix_ptrs[_CC_PRINT] = _new_invlist_C_array(XPosixPrint_invlist);
388 PL_XPosix_ptrs[_CC_PUNCT] = _new_invlist_C_array(XPosixPunct_invlist);
389 PL_XPosix_ptrs[_CC_SPACE] = _new_invlist_C_array(XPerlSpace_invlist);
390 PL_XPosix_ptrs[_CC_PSXSPC] = _new_invlist_C_array(XPosixSpace_invlist);
391 PL_XPosix_ptrs[_CC_UPPER] = _new_invlist_C_array(XPosixUpper_invlist);
392 PL_XPosix_ptrs[_CC_VERTSPACE] = _new_invlist_C_array(VertSpace_invlist);
393 PL_XPosix_ptrs[_CC_WORDCHAR] = _new_invlist_C_array(XPosixWord_invlist);
394 PL_XPosix_ptrs[_CC_XDIGIT] = _new_invlist_C_array(XPosixXDigit_invlist);
395
8990e307 396 ENTER;
79072805
LW		 397}
398
954c1994 399/*
62375a60
NIS		 400=for apidoc nothreadhook
401
402Stub that provides thread hook for perl_destruct when there are
403no threads.
404
405=cut
406*/
407
408int
4e9e3734 409Perl_nothreadhook(pTHX)
62375a60 410{
96a5add6 411 PERL_UNUSED_CONTEXT;
62375a60
NIS		 412 return 0;
413}
414
41e4abd8
NC		 415#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
416void
417Perl_dump_sv_child(pTHX_ SV *sv)
418{
419 ssize_t got;
bf357333
NC		 420 const int sock = PL_dumper_fd;
421 const int debug_fd = PerlIO_fileno(Perl_debug_log);
bf357333
NC		 422 union control_un control;
423 struct msghdr msg;
808ad2d0 424 struct iovec vec[2];
bf357333 425 struct cmsghdr *cmptr;
808ad2d0
NC		 426 int returned_errno;
427 unsigned char buffer[256];
41e4abd8 428
7918f24d
NC		 429 PERL_ARGS_ASSERT_DUMP_SV_CHILD;
430
bf357333 431 if(sock == -1 || debug_fd == -1)
41e4abd8
NC		 432 return;
433
434 PerlIO_flush(Perl_debug_log);
435
bf357333
NC		 436 /* All these shenanigans are to pass a file descriptor over to our child for
437 it to dump out to. We can't let it hold open the file descriptor when it
438 forks, as the file descriptor it will dump to can turn out to be one end
439 of pipe that some other process will wait on for EOF. (So as it would
b293a5f8 440 be open, the wait would be forever.) */
bf357333
NC		 441
442 msg.msg_control = control.control;
443 msg.msg_controllen = sizeof(control.control);
444 /* We're a connected socket so we don't need a destination */
445 msg.msg_name = NULL;
446 msg.msg_namelen = 0;
447 msg.msg_iov = vec;
808ad2d0 448 msg.msg_iovlen = 1;
bf357333
NC		 449
450 cmptr = CMSG_FIRSTHDR(&msg);
451 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
452 cmptr->cmsg_level = SOL_SOCKET;
453 cmptr->cmsg_type = SCM_RIGHTS;
454 *((int *)CMSG_DATA(cmptr)) = 1;
455
456 vec[0].iov_base = (void*)&sv;
457 vec[0].iov_len = sizeof(sv);
458 got = sendmsg(sock, &msg, 0);
41e4abd8
NC		 459
460 if(got < 0) {
bf357333 461 perror("Debug leaking scalars parent sendmsg failed");
41e4abd8
NC		 462 abort();
463 }
bf357333
NC		 464 if(got < sizeof(sv)) {
465 perror("Debug leaking scalars parent short sendmsg");
41e4abd8
NC		 466 abort();
467 }
468
808ad2d0
NC		 469 /* Return protocol is
470 int: errno value
471 unsigned char: length of location string (0 for empty)
472 unsigned char*: string (not terminated)
473 */
474 vec[0].iov_base = (void*)&returned_errno;
475 vec[0].iov_len = sizeof(returned_errno);
476 vec[1].iov_base = buffer;
477 vec[1].iov_len = 1;
478
479 got = readv(sock, vec, 2);
41e4abd8
NC		 480
481 if(got < 0) {
482 perror("Debug leaking scalars parent read failed");
808ad2d0 483 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC		 484 abort();
485 }
808ad2d0 486 if(got < sizeof(returned_errno) + 1) {
41e4abd8 487 perror("Debug leaking scalars parent short read");
808ad2d0 488 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC		 489 abort();
490 }
491
808ad2d0
NC		 492 if (*buffer) {
493 got = read(sock, buffer + 1, *buffer);
494 if(got < 0) {
495 perror("Debug leaking scalars parent read 2 failed");
496 PerlIO_flush(PerlIO_stderr());
497 abort();
498 }
499
500 if(got < *buffer) {
501 perror("Debug leaking scalars parent short read 2");
502 PerlIO_flush(PerlIO_stderr());
503 abort();
504 }
505 }
506
507 if (returned_errno || *buffer) {
508 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
509 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
0c0d42ff 510 returned_errno, Strerror(returned_errno));
41e4abd8
NC		 511 }
512}
513#endif
514
62375a60 515/*
954c1994
GS		 516=for apidoc perl_destruct
517
518Shuts down a Perl interpreter. See L<perlembed>.
519
520=cut
521*/
522
31d77e54 523int
0cb96387 524perl_destruct(pTHXx)
79072805 525{
27da23d5 526 dVAR;
be2ea8ed 527 VOL signed char destruct_level; /* see possible values in intrpvar.h */
a0d0e21e 528 HV *hv;
2aa47728 529#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
2aa47728
NC		 530 pid_t child;
531#endif
9c0b6888 532 int i;
8990e307 533
7918f24d
NC		 534 PERL_ARGS_ASSERT_PERL_DESTRUCT;
535#ifndef MULTIPLICITY
ed6c66dd 536 PERL_UNUSED_ARG(my_perl);
7918f24d 537#endif
9d4ba2ae 538
3d22c4f0
GG		 539 assert(PL_scopestack_ix == 1);
540
7766f137
GS		 541 /* wait for all pseudo-forked children to finish */
542 PERL_WAIT_FOR_CHILDREN;
543
3280af22 544 destruct_level = PL_perl_destruct_level;
36e77d41 545#if defined(DEBUGGING) || defined(PERL_TRACK_MEMPOOL)
4633a7c4 546 {
9d4ba2ae
AL		 547 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
548 if (s) {
96e440d2
JH		 549 int i;
550 if (strEQ(s, "-1")) { /* Special case: modperl folklore. */
551 i = -1;
552 } else {
553 i = grok_atou(s, NULL);
554 }
36e77d41
DD		 555#ifdef DEBUGGING
556 if (destruct_level < i) destruct_level = i;
557#endif
558#ifdef PERL_TRACK_MEMPOOL
f5199772
KW		 559 /* RT #114496, for perl_free */
560 PL_perl_destruct_level = i;
36e77d41 561#endif
5f05dabc 562 }
4633a7c4
LW		 563 }
564#endif
565
27da23d5 566 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB		 567 dJMPENV;
568 int x = 0;
569
570 JMPENV_PUSH(x);
1b6737cc 571 PERL_UNUSED_VAR(x);
9ebf26ad 572 if (PL_endav && !PL_minus_c) {
ca7b837b 573 PERL_SET_PHASE(PERL_PHASE_END);
f3faeb53 574 call_list(PL_scopestack_ix, PL_endav);
9ebf26ad 575 }
f3faeb53 576 JMPENV_POP;
26f423df 577 }
f3faeb53 578 LEAVE;
a0d0e21e 579 FREETMPS;
3d22c4f0 580 assert(PL_scopestack_ix == 0);
a0d0e21e 581
e00b64d4 582 /* Need to flush since END blocks can produce output */
f13a2bc0 583 my_fflush_all();
e00b64d4 584
75d476e2
S		 585#ifdef PERL_TRACE_OPS
586 /* If we traced all Perl OP usage, report and clean up */
587 PerlIO_printf(Perl_debug_log, "Trace of all OPs executed:\n");
588 for (i = 0; i <= OP_max; ++i) {
589 PerlIO_printf(Perl_debug_log, " %s: %"UVuf"\n", PL_op_name[i], PL_op_exec_cnt[i]);
590 PL_op_exec_cnt[i] = 0;
591 }
592 /* Utility slot for easily doing little tracing experiments in the runloop: */
593 if (PL_op_exec_cnt[OP_max+1] != 0)
594 PerlIO_printf(Perl_debug_log, " SPECIAL: %"UVuf"\n", PL_op_exec_cnt[OP_max+1]);
595 PerlIO_printf(Perl_debug_log, "\n");
596#endif
597
598
16c91539 599 if (PL_threadhook(aTHX)) {
62375a60 600 /* Threads hook has vetoed further cleanup */
c301d606 601 PL_veto_cleanup = TRUE;
37038d91 602 return STATUS_EXIT;
62375a60
NIS		 603 }
604
2aa47728
NC		 605#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
606 if (destruct_level != 0) {
607 /* Fork here to create a child. Our child's job is to preserve the
608 state of scalars prior to destruction, so that we can instruct it
609 to dump any scalars that we later find have leaked.
610 There's no subtlety in this code - it assumes POSIX, and it doesn't
611 fail gracefully */
612 int fd[2];
613
614 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
615 perror("Debug leaking scalars socketpair failed");
616 abort();
617 }
618
619 child = fork();
620 if(child == -1) {
621 perror("Debug leaking scalars fork failed");
622 abort();
623 }
624 if (!child) {
625 /* We are the child */
3125a5a4
NC		 626 const int sock = fd[1];
627 const int debug_fd = PerlIO_fileno(Perl_debug_log);
628 int f;
808ad2d0
NC		 629 const char *where;
630 /* Our success message is an integer 0, and a char 0 */
b61433a9 631 static const char success[sizeof(int) + 1] = {0};
3125a5a4 632
2aa47728 633 close(fd[0]);
2aa47728 634
3125a5a4
NC		 635 /* We need to close all other file descriptors otherwise we end up
636 with interesting hangs, where the parent closes its end of a
637 pipe, and sits waiting for (another) child to terminate. Only
638 that child never terminates, because it never gets EOF, because
bf357333
NC		 639 we also have the far end of the pipe open. We even need to
640 close the debugging fd, because sometimes it happens to be one
641 end of a pipe, and a process is waiting on the other end for
642 EOF. Normally it would be closed at some point earlier in
643 destruction, but if we happen to cause the pipe to remain open,
644 EOF never occurs, and we get an infinite hang. Hence all the
645 games to pass in a file descriptor if it's actually needed. */
3125a5a4
NC		 646
647 f = sysconf(_SC_OPEN_MAX);
648 if(f < 0) {
808ad2d0
NC		 649 where = "sysconf failed";
650 goto abort;
3125a5a4
NC		 651 }
652 while (f--) {
653 if (f == sock)
654 continue;
3125a5a4
NC		 655 close(f);
656 }
657
2aa47728
NC		 658 while (1) {
659 SV *target;
bf357333
NC		 660 union control_un control;
661 struct msghdr msg;
662 struct iovec vec[1];
663 struct cmsghdr *cmptr;
664 ssize_t got;
665 int got_fd;
666
667 msg.msg_control = control.control;
668 msg.msg_controllen = sizeof(control.control);
669 /* We're a connected socket so we don't need a source */
670 msg.msg_name = NULL;
671 msg.msg_namelen = 0;
672 msg.msg_iov = vec;
c3caa5c3 673 msg.msg_iovlen = C_ARRAY_LENGTH(vec);
bf357333
NC		 674
675 vec[0].iov_base = (void*)&target;
676 vec[0].iov_len = sizeof(target);
677
678 got = recvmsg(sock, &msg, 0);
2aa47728
NC		 679
680 if(got == 0)
681 break;
682 if(got < 0) {
808ad2d0
NC		 683 where = "recv failed";
684 goto abort;
2aa47728
NC		 685 }
686 if(got < sizeof(target)) {
808ad2d0
NC		 687 where = "short recv";
688 goto abort;
2aa47728 689 }
bf357333 690
808ad2d0
NC		 691 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
692 where = "no cmsg";
693 goto abort;
694 }
695 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
696 where = "wrong cmsg_len";
697 goto abort;
698 }
699 if(cmptr->cmsg_level != SOL_SOCKET) {
700 where = "wrong cmsg_level";
701 goto abort;
702 }
703 if(cmptr->cmsg_type != SCM_RIGHTS) {
704 where = "wrong cmsg_type";
705 goto abort;
706 }
bf357333
NC		 707
708 got_fd = *(int*)CMSG_DATA(cmptr);
709 /* For our last little bit of trickery, put the file descriptor
710 back into Perl_debug_log, as if we never actually closed it
711 */
808ad2d0
NC		 712 if(got_fd != debug_fd) {
713 if (dup2(got_fd, debug_fd) == -1) {
714 where = "dup2";
715 goto abort;
716 }
717 }
2aa47728 718 sv_dump(target);
bf357333 719
2aa47728
NC		 720 PerlIO_flush(Perl_debug_log);
721
808ad2d0 722 got = write(sock, &success, sizeof(success));
2aa47728
NC		 723
724 if(got < 0) {
808ad2d0
NC		 725 where = "write failed";
726 goto abort;
2aa47728 727 }
808ad2d0
NC		 728 if(got < sizeof(success)) {
729 where = "short write";
730 goto abort;
2aa47728
NC		 731 }
732 }
733 _exit(0);
808ad2d0
NC		 734 abort:
735 {
736 int send_errno = errno;
737 unsigned char length = (unsigned char) strlen(where);
738 struct iovec failure[3] = {
739 {(void*)&send_errno, sizeof(send_errno)},
740 {&length, 1},
741 {(void*)where, length}
742 };
743 int got = writev(sock, failure, 3);
744 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
745 in the parent if we try to read from the socketpair after the
746 child has exited, even if there was data to read.
747 So sleep a bit to give the parent a fighting chance of
748 reading the data. */
749 sleep(2);
750 _exit((got == -1) ? errno : 0);
751 }
bf357333 752 /* End of child. */
2aa47728 753 }
41e4abd8 754 PL_dumper_fd = fd[0];
2aa47728
NC		 755 close(fd[1]);
756 }
757#endif
758
ff0cee69 759 /* We must account for everything. */
760
761 /* Destroy the main CV and syntax tree */
37e77c23
FC		 762 /* Set PL_curcop now, because destroying ops can cause new SVs
763 to be generated in Perl_pad_swipe, and when running with
764 -DDEBUG_LEAKING_SCALARS they expect PL_curcop to point to a valid
765 op from which the filename structure member is copied. */
17fbfdf6 766 PL_curcop = &PL_compiling;
3280af22 767 if (PL_main_root) {
4e380990
DM		 768 /* ensure comppad/curpad to refer to main's pad */
769 if (CvPADLIST(PL_main_cv)) {
770 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
325e1816 771 PL_comppad_name = PadlistNAMES(CvPADLIST(PL_main_cv));
4e380990 772 }
3280af22 773 op_free(PL_main_root);
5f66b61c 774 PL_main_root = NULL;
a0d0e21e 775 }
5f66b61c 776 PL_main_start = NULL;
aac9d523
DM		 777 /* note that PL_main_cv isn't usually actually freed at this point,
778 * due to the CvOUTSIDE refs from subs compiled within it. It will
779 * get freed once all the subs are freed in sv_clean_all(), for
780 * destruct_level > 0 */
3280af22 781 SvREFCNT_dec(PL_main_cv);
601f1833 782 PL_main_cv = NULL;
ca7b837b 783 PERL_SET_PHASE(PERL_PHASE_DESTRUCT);
ff0cee69 784
13621cfb
NIS		 785 /* Tell PerlIO we are about to tear things apart in case
786 we have layers which are using resources that should
787 be cleaned up now.
788 */
789
790 PerlIO_destruct(aTHX);
791
ddf23d4a
S		 792 /*
793 * Try to destruct global references. We do this first so that the
794 * destructors and destructees still exist. Some sv's might remain.
795 * Non-referenced objects are on their own.
796 */
797 sv_clean_objs();
8990e307 798
5cd24f17 799 /* unhook hooks which will soon be, or use, destroyed data */
3280af22 800 SvREFCNT_dec(PL_warnhook);
a0714e2c 801 PL_warnhook = NULL;
3280af22 802 SvREFCNT_dec(PL_diehook);
a0714e2c 803 PL_diehook = NULL;
5cd24f17 804
4b556e6c 805 /* call exit list functions */
3280af22 806 while (PL_exitlistlen-- > 0)
acfe0abc 807 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 808
3280af22 809 Safefree(PL_exitlist);
4b556e6c 810
1c4916e5
CB		 811 PL_exitlist = NULL;
812 PL_exitlistlen = 0;
813
a3e6e81e
NC		 814 SvREFCNT_dec(PL_registered_mros);
815
551a8b83 816 /* jettison our possibly duplicated environment */
4b647fb0
DM		 817 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
818 * so we certainly shouldn't free it here
819 */
2f42fcb0 820#ifndef PERL_MICRO
4b647fb0 821#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
50acdf95 822 if (environ != PL_origenviron && !PL_use_safe_putenv
4efc5df6
GS		 823#ifdef USE_ITHREADS
824 /* only main thread can free environ[0] contents */
825 && PL_curinterp == aTHX
826#endif
827 )
828 {
551a8b83
JH		 829 I32 i;
830
831 for (i = 0; environ[i]; i++)
4b420006 832 safesysfree(environ[i]);
0631ea03 833
4b420006
JH		 834 /* Must use safesysfree() when working with environ. */
835 safesysfree(environ);
551a8b83
JH		 836
837 environ = PL_origenviron;
838 }
839#endif
2f42fcb0 840#endif /* !PERL_MICRO */
551a8b83 841
30985c42
JH		 842 if (destruct_level == 0) {
843
844 DEBUG_P(debprofdump());
845
846#if defined(PERLIO_LAYERS)
847 /* No more IO - including error messages ! */
848 PerlIO_cleanup(aTHX);
849#endif
850
851 CopFILE_free(&PL_compiling);
30985c42
JH		 852
853 /* The exit() function will do everything that needs doing. */
854 return STATUS_EXIT;
855 }
856
9fa9f06b
KW		 857 /* Below, do clean up for when PERL_DESTRUCT_LEVEL is not 0 */
858
5f8cb046
DM		 859#ifdef USE_ITHREADS
860 /* the syntax tree is shared between clones
861 * so op_free(PL_main_root) only ReREFCNT_dec's
862 * REGEXPs in the parent interpreter
863 * we need to manually ReREFCNT_dec for the clones
864 */
0547a729
DM		 865 {
866 I32 i = AvFILLp(PL_regex_padav);
867 SV **ary = AvARRAY(PL_regex_padav);
868
869 for (; i; i--) {
870 SvREFCNT_dec(ary[i]);
871 ary[i] = &PL_sv_undef;
872 }
873 }
5f8cb046
DM		 874#endif
875
0547a729 876
ad64d0ec 877 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
081fc587
AB		 878 PL_stashcache = NULL;
879
5f05dabc 880 /* loosen bonds of global variables */
881
2f9285f8
DM		 882 /* XXX can PL_parser still be non-null here? */
883 if(PL_parser && PL_parser->rsfp) {
884 (void)PerlIO_close(PL_parser->rsfp);
885 PL_parser->rsfp = NULL;
8ebc5c01 886 }
887
84386e14
RGS		 888 if (PL_minus_F) {
889 Safefree(PL_splitstr);
890 PL_splitstr = NULL;
891 }
892
8ebc5c01 893 /* switches */
3280af22
NIS		 894 PL_minus_n = FALSE;
895 PL_minus_p = FALSE;
896 PL_minus_l = FALSE;
897 PL_minus_a = FALSE;
898 PL_minus_F = FALSE;
899 PL_doswitches = FALSE;
599cee73 900 PL_dowarn = G_WARN_OFF;
1a904fc8 901#ifdef PERL_SAWAMPERSAND
d3b97530 902 PL_sawampersand = 0; /* must save all match strings */
1a904fc8 903#endif
3280af22
NIS		 904 PL_unsafe = FALSE;
905
906 Safefree(PL_inplace);
bd61b366 907 PL_inplace = NULL;
a7cb1f99 908 SvREFCNT_dec(PL_patchlevel);
1e8125c6 909 SvREFCNT_dec(PL_apiversion);
3280af22
NIS		 910
911 if (PL_e_script) {
912 SvREFCNT_dec(PL_e_script);
a0714e2c 913 PL_e_script = NULL;
8ebc5c01 914 }
915
bf9cdc68
RG		 916 PL_perldb = 0;
917
8ebc5c01 918 /* magical thingies */
919
e23d9e2f
CS		 920 SvREFCNT_dec(PL_ofsgv); /* *, */
921 PL_ofsgv = NULL;
5f05dabc 922
7889fe52 923 SvREFCNT_dec(PL_ors_sv); /* $\ */
a0714e2c 924 PL_ors_sv = NULL;
8ebc5c01 925
3280af22 926 SvREFCNT_dec(PL_rs); /* $/ */
a0714e2c 927 PL_rs = NULL;
dc92893f 928
d33b2eba 929 Safefree(PL_osname); /* $^O */
bd61b366 930 PL_osname = NULL;
5f05dabc 931
3280af22 932 SvREFCNT_dec(PL_statname);
a0714e2c
SS		 933 PL_statname = NULL;
934 PL_statgv = NULL;
5f05dabc 935
8ebc5c01 936 /* defgv, aka *_ should be taken care of elsewhere */
937
7d5ea4e7
GS		 938 /* float buffer */
939 Safefree(PL_efloatbuf);
bd61b366 940 PL_efloatbuf = NULL;
7d5ea4e7
GS		 941 PL_efloatsize = 0;
942
8ebc5c01 943 /* startup and shutdown function lists */
3280af22 944 SvREFCNT_dec(PL_beginav);
5a837c8f 945 SvREFCNT_dec(PL_beginav_save);
3280af22 946 SvREFCNT_dec(PL_endav);
7d30b5c4 947 SvREFCNT_dec(PL_checkav);
ece599bd 948 SvREFCNT_dec(PL_checkav_save);
3c10abe3
AG		 949 SvREFCNT_dec(PL_unitcheckav);
950 SvREFCNT_dec(PL_unitcheckav_save);
3280af22 951 SvREFCNT_dec(PL_initav);
7d49f689
NC		 952 PL_beginav = NULL;
953 PL_beginav_save = NULL;
954 PL_endav = NULL;
955 PL_checkav = NULL;
956 PL_checkav_save = NULL;
3c10abe3
AG		 957 PL_unitcheckav = NULL;
958 PL_unitcheckav_save = NULL;
7d49f689 959 PL_initav = NULL;
5618dfe8 960
8ebc5c01 961 /* shortcuts just get cleared */
a0714e2c
SS		 962 PL_hintgv = NULL;
963 PL_errgv = NULL;
a0714e2c
SS		 964 PL_argvoutgv = NULL;
965 PL_stdingv = NULL;
966 PL_stderrgv = NULL;
967 PL_last_in_gv = NULL;
a0714e2c
SS		 968 PL_DBsingle = NULL;
969 PL_DBtrace = NULL;
970 PL_DBsignal = NULL;
a6d69523
TC		 971 PL_DBsingle_iv = 0;
972 PL_DBtrace_iv = 0;
973 PL_DBsignal_iv = 0;
601f1833 974 PL_DBcv = NULL;
7d49f689 975 PL_dbargs = NULL;
5c284bb0 976 PL_debstash = NULL;
8ebc5c01 977
cf93a474 978 SvREFCNT_dec(PL_envgv);
f03015cd 979 SvREFCNT_dec(PL_incgv);
722fa0e9 980 SvREFCNT_dec(PL_argvgv);
475b1e90 981 SvREFCNT_dec(PL_replgv);
8cece913
FC		 982 SvREFCNT_dec(PL_DBgv);
983 SvREFCNT_dec(PL_DBline);
984 SvREFCNT_dec(PL_DBsub);
cf93a474 985 PL_envgv = NULL;
f03015cd 986 PL_incgv = NULL;
722fa0e9 987 PL_argvgv = NULL;
475b1e90 988 PL_replgv = NULL;
8cece913
FC		 989 PL_DBgv = NULL;
990 PL_DBline = NULL;
991 PL_DBsub = NULL;
992
7a1c5554 993 SvREFCNT_dec(PL_argvout_stack);
7d49f689 994 PL_argvout_stack = NULL;
8ebc5c01 995
5c831c24 996 SvREFCNT_dec(PL_modglobal);
5c284bb0 997 PL_modglobal = NULL;
5c831c24 998 SvREFCNT_dec(PL_preambleav);
7d49f689 999 PL_preambleav = NULL;
5c831c24 1000 SvREFCNT_dec(PL_subname);
a0714e2c 1001 PL_subname = NULL;
ca0c25f6 1002#ifdef PERL_USES_PL_PIDSTATUS
5c831c24 1003 SvREFCNT_dec(PL_pidstatus);
5c284bb0 1004 PL_pidstatus = NULL;
ca0c25f6 1005#endif
5c831c24 1006 SvREFCNT_dec(PL_toptarget);
a0714e2c 1007 PL_toptarget = NULL;
5c831c24 1008 SvREFCNT_dec(PL_bodytarget);
a0714e2c
SS		 1009 PL_bodytarget = NULL;
1010 PL_formtarget = NULL;
5c831c24 1011
d33b2eba 1012 /* free locale stuff */
b9582b6a 1013#ifdef USE_LOCALE_COLLATE
d33b2eba 1014 Safefree(PL_collation_name);
bd61b366 1015 PL_collation_name = NULL;
b9582b6a 1016#endif
d33b2eba 1017
b9582b6a 1018#ifdef USE_LOCALE_NUMERIC
d33b2eba 1019 Safefree(PL_numeric_name);
bd61b366 1020 PL_numeric_name = NULL;
a453c169 1021 SvREFCNT_dec(PL_numeric_radix_sv);
a0714e2c 1022 PL_numeric_radix_sv = NULL;
b9582b6a 1023#endif
d33b2eba 1024
9c0b6888
KW		 1025 /* clear character classes */
1026 for (i = 0; i < POSIX_SWASH_COUNT; i++) {
1027 SvREFCNT_dec(PL_utf8_swash_ptrs[i]);
1028 PL_utf8_swash_ptrs[i] = NULL;
1029 }
5c831c24
GS		 1030 SvREFCNT_dec(PL_utf8_mark);
1031 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 1032 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 1033 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 1034 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH		 1035 SvREFCNT_dec(PL_utf8_idstart);
1036 SvREFCNT_dec(PL_utf8_idcont);
c60f4405 1037 SvREFCNT_dec(PL_utf8_foldable);
2726813d 1038 SvREFCNT_dec(PL_utf8_foldclosures);
9fa9f06b 1039 SvREFCNT_dec(PL_AboveLatin1);
e0a1ff7a 1040 SvREFCNT_dec(PL_InBitmap);
9fa9f06b
KW		 1041 SvREFCNT_dec(PL_UpperLatin1);
1042 SvREFCNT_dec(PL_Latin1);
1043 SvREFCNT_dec(PL_NonL1NonFinalFold);
1044 SvREFCNT_dec(PL_HasMultiCharFold);
a0714e2c
SS		 1045 PL_utf8_mark = NULL;
1046 PL_utf8_toupper = NULL;
1047 PL_utf8_totitle = NULL;
1048 PL_utf8_tolower = NULL;
1049 PL_utf8_tofold = NULL;
1050 PL_utf8_idstart = NULL;
1051 PL_utf8_idcont = NULL;
2726813d 1052 PL_utf8_foldclosures = NULL;
9fa9f06b 1053 PL_AboveLatin1 = NULL;
e0a1ff7a 1054 PL_InBitmap = NULL;
9fa9f06b
KW		 1055 PL_HasMultiCharFold = NULL;
1056 PL_Latin1 = NULL;
1057 PL_NonL1NonFinalFold = NULL;
1058 PL_UpperLatin1 = NULL;
86f72d56 1059 for (i = 0; i < POSIX_CC_COUNT; i++) {
cac6e0ca
KW		 1060 SvREFCNT_dec(PL_XPosix_ptrs[i]);
1061 PL_XPosix_ptrs[i] = NULL;
86f72d56 1062 }
5c831c24 1063
971a9dd3 1064 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 1065 PerlMemShared_free(PL_compiling.cop_warnings);
a0714e2c 1066 PL_compiling.cop_warnings = NULL;
20439bc7
Z		 1067 cophh_free(CopHINTHASH_get(&PL_compiling));
1068 CopHINTHASH_set(&PL_compiling, cophh_new_empty());
05ec9bb3 1069 CopFILE_free(&PL_compiling);
5c831c24 1070
a0d0e21e 1071 /* Prepare to destruct main symbol table. */
5f05dabc 1072
3280af22 1073 hv = PL_defstash;
ca556bcd
DM		 1074 /* break ref loop *:: <=> %:: */
1075 (void)hv_delete(hv, "main::", 6, G_DISCARD);
3280af22 1076 PL_defstash = 0;
a0d0e21e 1077 SvREFCNT_dec(hv);
5c831c24 1078 SvREFCNT_dec(PL_curstname);
a0714e2c 1079 PL_curstname = NULL;
a0d0e21e 1080
5a844595
GS		 1081 /* clear queued errors */
1082 SvREFCNT_dec(PL_errors);
a0714e2c 1083 PL_errors = NULL;
5a844595 1084
dd69841b
BB		 1085 SvREFCNT_dec(PL_isarev);
1086
a0d0e21e 1087 FREETMPS;
9b387841 1088 if (destruct_level >= 2) {
3280af22 1089 if (PL_scopestack_ix != 0)
9b387841
NC		 1090 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1091 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1092 (long)PL_scopestack_ix);
3280af22 1093 if (PL_savestack_ix != 0)
9b387841
NC		 1094 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1095 "Unbalanced saves: %ld more saves than restores\n",
1096 (long)PL_savestack_ix);
3280af22 1097 if (PL_tmps_floor != -1)
9b387841
NC		 1098 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1099 (long)PL_tmps_floor + 1);
a0d0e21e 1100 if (cxstack_ix != -1)
9b387841
NC		 1101 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1102 (long)cxstack_ix + 1);
a0d0e21e 1103 }
8990e307 1104
0547a729
DM		 1105#ifdef USE_ITHREADS
1106 SvREFCNT_dec(PL_regex_padav);
1107 PL_regex_padav = NULL;
1108 PL_regex_pad = NULL;
1109#endif
1110
776df701 1111#ifdef PERL_IMPLICIT_CONTEXT
57bb2458
JH		 1112 /* the entries in this list are allocated via SV PVX's, so get freed
1113 * in sv_clean_all */
1114 Safefree(PL_my_cxt_list);
776df701 1115#endif
57bb2458 1116
8990e307 1117 /* Now absolutely destruct everything, somehow or other, loops or no. */
5226ed68
JH		 1118
1119 /* the 2 is for PL_fdpid and PL_strtab */
d17ea597 1120 while (sv_clean_all() > 2)
5226ed68
JH		 1121 ;
1122
23083432
FC		 1123#ifdef USE_ITHREADS
1124 Safefree(PL_stashpad); /* must come after sv_clean_all */
1125#endif
1126
d4777f27
GS		 1127 AvREAL_off(PL_fdpid); /* no surviving entries */
1128 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
7d49f689 1129 PL_fdpid = NULL;
d33b2eba 1130
6c644e78
GS		 1131#ifdef HAVE_INTERP_INTERN
1132 sys_intern_clear();
1133#endif
1134
a38ab475
RZ		 1135 /* constant strings */
1136 for (i = 0; i < SV_CONSTS_COUNT; i++) {
1137 SvREFCNT_dec(PL_sv_consts[i]);
1138 PL_sv_consts[i] = NULL;
1139 }
1140
6e72f9df 1141 /* Destruct the global string table. */
1142 {
1143 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1144 * so that sv_free() won't fail on them.
80459961
NC		 1145 * Now that the global string table is using a single hunk of memory
1146 * for both HE and HEK, we either need to explicitly unshare it the
1147 * correct way, or actually free things here.
6e72f9df 1148 */
80459961
NC		 1149 I32 riter = 0;
1150 const I32 max = HvMAX(PL_strtab);
c4420975 1151 HE * const * const array = HvARRAY(PL_strtab);
80459961
NC		 1152 HE *hent = array[0];
1153
6e72f9df 1154 for (;;) {
0453d815 1155 if (hent && ckWARN_d(WARN_INTERNAL)) {
44f8325f 1156 HE * const next = HeNEXT(hent);
9014280d 1157 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
44f8325f 1158 "Unbalanced string table refcount: (%ld) for \"%s\"",
de616631 1159 (long)hent->he_valu.hent_refcount, HeKEY(hent));
80459961
NC		 1160 Safefree(hent);
1161 hent = next;
6e72f9df 1162 }
1163 if (!hent) {
1164 if (++riter > max)
1165 break;
1166 hent = array[riter];
1167 }
1168 }
80459961
NC		 1169
1170 Safefree(array);
1171 HvARRAY(PL_strtab) = 0;
1172 HvTOTALKEYS(PL_strtab) = 0;
6e72f9df 1173 }
3280af22 1174 SvREFCNT_dec(PL_strtab);
6e72f9df 1175
e652bb2f 1176#ifdef USE_ITHREADS
c21d1a0f 1177 /* free the pointer tables used for cloning */
a0739874 1178 ptr_table_free(PL_ptr_table);
bf9cdc68 1179 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1180#endif
a0739874 1181
d33b2eba
GS		 1182 /* free special SVs */
1183
1184 SvREFCNT(&PL_sv_yes) = 0;
1185 sv_clear(&PL_sv_yes);
1186 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1187 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS		 1188
1189 SvREFCNT(&PL_sv_no) = 0;
1190 sv_clear(&PL_sv_no);
1191 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1192 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1193
9f375a43
DM		 1194 {
1195 int i;
1196 for (i=0; i<=2; i++) {
1197 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1198 sv_clear(PERL_DEBUG_PAD(i));
1199 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1200 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1201 }
1202 }
1203
0453d815 1204 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1205 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1206
eba0f806
DM		 1207#ifdef DEBUG_LEAKING_SCALARS
1208 if (PL_sv_count != 0) {
1209 SV* sva;
1210 SV* sv;
eb578fdb 1211 SV* svend;
eba0f806 1212
ad64d0ec 1213 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
eba0f806
DM		 1214 svend = &sva[SvREFCNT(sva)];
1215 for (sv = sva + 1; sv < svend; ++sv) {
e4787c0c 1216 if (SvTYPE(sv) != (svtype)SVTYPEMASK) {
a548cda8 1217 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1218 " flags=0x%"UVxf
fd0854ff 1219 " refcnt=%"UVuf pTHX__FORMAT "\n"
cd676548
DM		 1220 "\tallocated at %s:%d %s %s (parent 0x%"UVxf");"
1221 "serial %"UVuf"\n",
574b8821
NC		 1222 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1223 pTHX__VALUE,
fd0854ff
DM		 1224 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1225 sv->sv_debug_line,
1226 sv->sv_debug_inpad ? "for" : "by",
1227 sv->sv_debug_optype ?
1228 PL_op_name[sv->sv_debug_optype]: "(none)",
cd676548 1229 PTR2UV(sv->sv_debug_parent),
cbe56f1d 1230 sv->sv_debug_serial
fd0854ff 1231 );
2aa47728 1232#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1233 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1234#endif
eba0f806
DM		 1235 }
1236 }
1237 }
1238 }
2aa47728
NC		 1239#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1240 {
1241 int status;
1242 fd_set rset;
1243 /* Wait for up to 4 seconds for child to terminate.
1244 This seems to be the least effort way of timing out on reaping
1245 its exit status. */
1246 struct timeval waitfor = {4, 0};
41e4abd8 1247 int sock = PL_dumper_fd;
2aa47728
NC		 1248
1249 shutdown(sock, 1);
1250 FD_ZERO(&rset);
1251 FD_SET(sock, &rset);
1252 select(sock + 1, &rset, NULL, NULL, &waitfor);
1253 waitpid(child, &status, WNOHANG);
1254 close(sock);
1255 }
1256#endif
eba0f806 1257#endif
77abb4c6
NC		 1258#ifdef DEBUG_LEAKING_SCALARS_ABORT
1259 if (PL_sv_count)
1260 abort();
1261#endif
bf9cdc68 1262 PL_sv_count = 0;
eba0f806 1263
56a2bab7 1264#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS		 1265 /* No more IO - including error messages ! */
1266 PerlIO_cleanup(aTHX);
1267#endif
1268
9f4bd222 1269 /* sv_undef needs to stay immortal until after PerlIO_cleanup
a0714e2c 1270 as currently layers use it rather than NULL as a marker
9f4bd222
NIS		 1271 for no arg - and will try and SvREFCNT_dec it.
1272 */
1273 SvREFCNT(&PL_sv_undef) = 0;
1274 SvREADONLY_off(&PL_sv_undef);
1275
3280af22 1276 Safefree(PL_origfilename);
bd61b366 1277 PL_origfilename = NULL;
43c5f42d 1278 Safefree(PL_reg_curpm);
dd28f7bb 1279 free_tied_hv_pool();
3280af22 1280 Safefree(PL_op_mask);
cf36064f 1281 Safefree(PL_psig_name);
bf9cdc68 1282 PL_psig_name = (SV**)NULL;
d525a7b2 1283 PL_psig_ptr = (SV**)NULL;
31c91b43
LR		 1284 {
1285 /* We need to NULL PL_psig_pend first, so that
1286 signal handlers know not to use it */
1287 int *psig_save = PL_psig_pend;
1288 PL_psig_pend = (int*)NULL;
1289 Safefree(psig_save);
1290 }
6e72f9df 1291 nuke_stacks();
284167a5
S		 1292 TAINTING_set(FALSE);
1293 TAINT_WARN_set(FALSE);
3280af22 1294 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
bf9cdc68 1295 PL_debug = 0;
ac27b0f5 1296
a0d0e21e 1297 DEBUG_P(debprofdump());
d33b2eba 1298
e5dd39fc 1299#ifdef USE_REENTRANT_API
10bc17b6 1300 Perl_reentrant_free(aTHX);
e5dd39fc
AB		 1301#endif
1302
612f20c3
GS		 1303 sv_free_arenas();
1304
5d9a96ca
DM		 1305 while (PL_regmatch_slab) {
1306 regmatch_slab *s = PL_regmatch_slab;
1307 PL_regmatch_slab = PL_regmatch_slab->next;
1308 Safefree(s);
1309 }
1310
fc36a67e 1311 /* As the absolutely last thing, free the non-arena SV for mess() */
1312
3280af22 1313 if (PL_mess_sv) {
f350b448
NC		 1314 /* we know that type == SVt_PVMG */
1315
9c63abab 1316 /* it could have accumulated taint magic */
f350b448
NC		 1317 MAGIC* mg;
1318 MAGIC* moremagic;
1319 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1320 moremagic = mg->mg_moremagic;
1321 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1322 && mg->mg_len >= 0)
1323 Safefree(mg->mg_ptr);
1324 Safefree(mg);
9c63abab 1325 }
f350b448 1326
fc36a67e 1327 /* we know that type >= SVt_PV */
8bd4d4c5 1328 SvPV_free(PL_mess_sv);
3280af22
NIS		 1329 Safefree(SvANY(PL_mess_sv));
1330 Safefree(PL_mess_sv);
a0714e2c 1331 PL_mess_sv = NULL;
fc36a67e 1332 }
37038d91 1333 return STATUS_EXIT;
79072805
LW		 1334}
1335
954c1994
GS		 1336/*
1337=for apidoc perl_free
1338
1339Releases a Perl interpreter. See L<perlembed>.
1340
1341=cut
1342*/
1343
79072805 1344void
0cb96387 1345perl_free(pTHXx)
79072805 1346{
5174512c
NC		 1347 dVAR;
1348
7918f24d
NC		 1349 PERL_ARGS_ASSERT_PERL_FREE;
1350
c301d606
DM		 1351 if (PL_veto_cleanup)
1352 return;
1353
7cb608b5 1354#ifdef PERL_TRACK_MEMPOOL
55ef9aae
MHM		 1355 {
1356 /*
1357 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1358 * value as we're probably hunting memory leaks then
1359 */
36e77d41 1360 if (PL_perl_destruct_level == 0) {
4fd0a9b8 1361 const U32 old_debug = PL_debug;
55ef9aae
MHM		 1362 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1363 thread at thread exit. */
4fd0a9b8
NC		 1364 if (DEBUG_m_TEST) {
1365 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1366 "free this thread's memory\n");
1367 PL_debug &= ~ DEBUG_m_FLAG;
1368 }
55ef9aae 1369 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
a78adc84 1370 safesysfree(PERL_MEMORY_DEBUG_HEADER_SIZE + (char *)(aTHXx->Imemory_debug_header.next));
4fd0a9b8 1371 PL_debug = old_debug;
55ef9aae
MHM		 1372 }
1373 }
7cb608b5
NC		 1374#endif
1375
acfe0abc 1376#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1377# if defined(PERL_IMPLICIT_SYS)
b36c9a52 1378 {
acfe0abc 1379# ifdef NETWARE
7af12a34 1380 void *host = nw_internal_host;
7af12a34 1381 PerlMem_free(aTHXx);
7af12a34 1382 nw_delete_internal_host(host);
acfe0abc 1383# else
bdb50480
NC		 1384 void *host = w32_internal_host;
1385 PerlMem_free(aTHXx);
7af12a34 1386 win32_delete_internal_host(host);
acfe0abc 1387# endif
7af12a34 1388 }
1c0ca838
GS		 1389# else
1390 PerlMem_free(aTHXx);
1391# endif
acfe0abc
GS		 1392#else
1393 PerlMem_free(aTHXx);
76e3520e 1394#endif
79072805
LW		 1395}
1396
b7f7fff6 1397#if defined(USE_ITHREADS)
aebd1ac7
GA		 1398/* provide destructors to clean up the thread key when libperl is unloaded */
1399#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1400
826955bd 1401#if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
aebd1ac7 1402#pragma fini "perl_fini"
666ad1ec
GA		 1403#elif defined(__sun) && !defined(__GNUC__)
1404#pragma fini (perl_fini)
aebd1ac7
GA		 1405#endif
1406
0dbb1585
AL		 1407static void
1408#if defined(__GNUC__)
1409__attribute__((destructor))
aebd1ac7 1410#endif
de009b76 1411perl_fini(void)
aebd1ac7 1412{
27da23d5 1413 dVAR;
5c64bffd
NC		 1414 if (
1415#ifdef PERL_GLOBAL_STRUCT_PRIVATE
1416 my_vars &&
1417#endif
1418 PL_curinterp && !PL_veto_cleanup)
aebd1ac7
GA		 1419 FREE_THREAD_KEY;
1420}
1421
1422#endif /* WIN32 */
1423#endif /* THREADS */
1424
4b556e6c 1425void
864dbfa3 1426Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1427{
3280af22
NIS		 1428 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1429 PL_exitlist[PL_exitlistlen].fn = fn;
1430 PL_exitlist[PL_exitlistlen].ptr = ptr;
1431 ++PL_exitlistlen;
4b556e6c
JD		 1432}
1433
954c1994
GS		 1434/*
1435=for apidoc perl_parse
1436
1437Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1438
1439=cut
1440*/
1441
03d9f026
FC		 1442#define SET_CURSTASH(newstash) \
1443 if (PL_curstash != newstash) { \
1444 SvREFCNT_dec(PL_curstash); \
1445 PL_curstash = (HV *)SvREFCNT_inc(newstash); \
1446 }
1447
79072805 1448int
0cb96387 1449perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1450{
27da23d5 1451 dVAR;
6224f72b 1452 I32 oldscope;
6224f72b 1453 int ret;
db36c5a1 1454 dJMPENV;
8d063cd8 1455
7918f24d
NC		 1456 PERL_ARGS_ASSERT_PERL_PARSE;
1457#ifndef MULTIPLICITY
ed6c66dd 1458 PERL_UNUSED_ARG(my_perl);
7918f24d 1459#endif
7dc86639 1460#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) || defined(USE_HASH_SEED_DEBUG)
b0891165 1461 {
7dc86639
YO		 1462 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
1463
96e440d2 1464 if (s && (grok_atou(s, NULL) == 1)) {
7dc86639
YO		 1465 unsigned char *seed= PERL_HASH_SEED;
1466 unsigned char *seed_end= PERL_HASH_SEED + PERL_HASH_SEED_BYTES;
1467 PerlIO_printf(Perl_debug_log, "HASH_FUNCTION = %s HASH_SEED = 0x", PERL_HASH_FUNC);
1468 while (seed < seed_end) {
1469 PerlIO_printf(Perl_debug_log, "%02x", *seed++);
1470 }
6a5b4183
YO		 1471#ifdef PERL_HASH_RANDOMIZE_KEYS
1472 PerlIO_printf(Perl_debug_log, " PERTURB_KEYS = %d (%s)",
1473 PL_HASH_RAND_BITS_ENABLED,
1474 PL_HASH_RAND_BITS_ENABLED == 0 ? "NO" : PL_HASH_RAND_BITS_ENABLED == 1 ? "RANDOM" : "DETERMINISTIC");
1475#endif
7dc86639
YO		 1476 PerlIO_printf(Perl_debug_log, "\n");
1477 }
b0891165
JH		 1478 }
1479#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
3280af22 1480 PL_origargc = argc;
e2975953 1481 PL_origargv = argv;
a0d0e21e 1482
a2722ac9
GA		 1483 if (PL_origalen != 0) {
1484 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1485 }
1486 else {
3cb9023d
JH		 1487 /* Set PL_origalen be the sum of the contiguous argv[]
1488 * elements plus the size of the env in case that it is
e9137a8e 1489 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH		 1490 * as the maximum modifiable length of $0. In the worst case
1491 * the area we are able to modify is limited to the size of
43c32782 1492 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1493 * --jhi */
e1ec3a88 1494 const char *s = NULL;
54bfe034 1495 int i;
b7249aaf 1496 const UV mask = ~(UV)(PTRSIZE-1);
43c32782 1497 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1498 const UV aligned =
43c32782
JH		 1499 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1500
1501 /* See if all the arguments are contiguous in memory. Note
1502 * that 'contiguous' is a loose term because some platforms
1503 * align the argv[] and the envp[]. If the arguments look
1504 * like non-aligned, assume that they are 'strictly' or
1505 * 'traditionally' contiguous. If the arguments look like
1506 * aligned, we just check that they are within aligned
1507 * PTRSIZE bytes. As long as no system has something bizarre
1508 * like the argv[] interleaved with some other data, we are
1509 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH		 1510 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1511 while (*s) s++;
1512 for (i = 1; i < PL_origargc; i++) {
1513 if ((PL_origargv[i] == s + 1
43c32782 1514#ifdef OS2
c8941eeb 1515 || PL_origargv[i] == s + 2
43c32782 1516#endif
c8941eeb
JH		 1517 )
1518 ||
1519 (aligned &&
1520 (PL_origargv[i] > s &&
1521 PL_origargv[i] <=
1522 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1523 )
1524 {
1525 s = PL_origargv[i];
1526 while (*s) s++;
1527 }
1528 else
1529 break;
54bfe034 1530 }
54bfe034 1531 }
a4a109c2
JD		 1532
1533#ifndef PERL_USE_SAFE_PUTENV
3cb9023d 1534 /* Can we grab env area too to be used as the area for $0? */
a4a109c2 1535 if (s && PL_origenviron && !PL_use_safe_putenv) {
9d419b5f 1536 if ((PL_origenviron[0] == s + 1)
43c32782
JH		 1537 ||
1538 (aligned &&
1539 (PL_origenviron[0] > s &&
1540 PL_origenviron[0] <=
1541 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1542 )
1543 {
9d419b5f 1544#ifndef OS2 /* ENVIRON is read by the kernel too. */
43c32782
JH		 1545 s = PL_origenviron[0];
1546 while (*s) s++;
1547#endif
bd61b366 1548 my_setenv("NoNe SuCh", NULL);
43c32782
JH		 1549 /* Force copy of environment. */
1550 for (i = 1; PL_origenviron[i]; i++) {
1551 if (PL_origenviron[i] == s + 1
1552 ||
1553 (aligned &&
1554 (PL_origenviron[i] > s &&
1555 PL_origenviron[i] <=
1556 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1557 )
1558 {
1559 s = PL_origenviron[i];
1560 while (*s) s++;
1561 }
1562 else
1563 break;
54bfe034 1564 }
43c32782 1565 }
54bfe034 1566 }
a4a109c2
JD		 1567#endif /* !defined(PERL_USE_SAFE_PUTENV) */
1568
2d2af554 1569 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH		 1570 }
1571
3280af22 1572 if (PL_do_undump) {
a0d0e21e
LW		 1573
1574 /* Come here if running an undumped a.out. */
1575
3280af22
NIS		 1576 PL_origfilename = savepv(argv[0]);
1577 PL_do_undump = FALSE;
a0d0e21e 1578 cxstack_ix = -1; /* start label stack again */
748a9306 1579 init_ids();
284167a5 1580 assert (!TAINT_get);
b7975bdd 1581 TAINT;
e2051532 1582 set_caret_X();
b7975bdd 1583 TAINT_NOT;
a0d0e21e
LW		 1584 init_postdump_symbols(argc,argv,env);
1585 return 0;
1586 }
1587
3280af22 1588 if (PL_main_root) {
3280af22 1589 op_free(PL_main_root);
5f66b61c 1590 PL_main_root = NULL;
ff0cee69 1591 }
5f66b61c 1592 PL_main_start = NULL;
3280af22 1593 SvREFCNT_dec(PL_main_cv);
601f1833 1594 PL_main_cv = NULL;
79072805 1595
3280af22
NIS		 1596 time(&PL_basetime);
1597 oldscope = PL_scopestack_ix;
599cee73 1598 PL_dowarn = G_WARN_OFF;
f86702cc 1599
14dd3ad8 1600 JMPENV_PUSH(ret);
6224f72b 1601 switch (ret) {
312caa8e 1602 case 0:
14dd3ad8 1603 parse_body(env,xsinit);
9ebf26ad 1604 if (PL_unitcheckav) {
3c10abe3 1605 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR		 1606 }
1607 if (PL_checkav) {
ca7b837b 1608 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1609 call_list(oldscope, PL_checkav);
9ebf26ad 1610 }
14dd3ad8
GS		 1611 ret = 0;
1612 break;
6224f72b
GS		 1613 case 1:
1614 STATUS_ALL_FAILURE;
924ba076 1615 /* FALLTHROUGH */
6224f72b
GS		 1616 case 2:
1617 /* my_exit() was called */
3280af22 1618 while (PL_scopestack_ix > oldscope)
6224f72b
GS		 1619 LEAVE;
1620 FREETMPS;
03d9f026 1621 SET_CURSTASH(PL_defstash);
9ebf26ad 1622 if (PL_unitcheckav) {
3c10abe3 1623 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR		 1624 }
1625 if (PL_checkav) {
ca7b837b 1626 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1627 call_list(oldscope, PL_checkav);
9ebf26ad 1628 }
37038d91 1629 ret = STATUS_EXIT;
14dd3ad8 1630 break;
6224f72b 1631 case 3:
bf49b057 1632 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS		 1633 ret = 1;
1634 break;
6224f72b 1635 }
14dd3ad8
GS		 1636 JMPENV_POP;
1637 return ret;
1638}
1639
4a5df386
NC		 1640/* This needs to stay in perl.c, as perl.c is compiled with different flags for
1641 miniperl, and we need to see those flags reflected in the values here. */
1642
1643/* What this returns is subject to change. Use the public interface in Config.
1644 */
1645static void
1646S_Internals_V(pTHX_ CV *cv)
1647{
1648 dXSARGS;
1649#ifdef LOCAL_PATCH_COUNT
1650 const int local_patch_count = LOCAL_PATCH_COUNT;
1651#else
1652 const int local_patch_count = 0;
1653#endif
2dc296d2 1654 const int entries = 3 + local_patch_count;
4a5df386 1655 int i;
fe1c5936 1656 static const char non_bincompat_options[] =
4a5df386
NC		 1657# ifdef DEBUGGING
1658 " DEBUGGING"
1659# endif
1660# ifdef NO_MATHOMS
0d311fbe 1661 " NO_MATHOMS"
4a5df386 1662# endif
59b86f4b
DM		 1663# ifdef NO_HASH_SEED
1664 " NO_HASH_SEED"
1665# endif
3b0e4ee2
MB		 1666# ifdef NO_TAINT_SUPPORT
1667 " NO_TAINT_SUPPORT"
1668# endif
cb26ef7a
MB		 1669# ifdef PERL_BOOL_AS_CHAR
1670 " PERL_BOOL_AS_CHAR"
1671# endif
4a5df386
NC		 1672# ifdef PERL_DISABLE_PMC
1673 " PERL_DISABLE_PMC"
1674# endif
1675# ifdef PERL_DONT_CREATE_GVSV
1676 " PERL_DONT_CREATE_GVSV"
1677# endif
9a044a43
NC		 1678# ifdef PERL_EXTERNAL_GLOB
1679 " PERL_EXTERNAL_GLOB"
1680# endif
59b86f4b
DM		 1681# ifdef PERL_HASH_FUNC_SIPHASH
1682 " PERL_HASH_FUNC_SIPHASH"
1683# endif
1684# ifdef PERL_HASH_FUNC_SDBM
1685 " PERL_HASH_FUNC_SDBM"
1686# endif
1687# ifdef PERL_HASH_FUNC_DJB2
1688 " PERL_HASH_FUNC_DJB2"
1689# endif
1690# ifdef PERL_HASH_FUNC_SUPERFAST
1691 " PERL_HASH_FUNC_SUPERFAST"
1692# endif
1693# ifdef PERL_HASH_FUNC_MURMUR3
1694 " PERL_HASH_FUNC_MURMUR3"
1695# endif
1696# ifdef PERL_HASH_FUNC_ONE_AT_A_TIME
1697 " PERL_HASH_FUNC_ONE_AT_A_TIME"
1698# endif
1699# ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_HARD
1700 " PERL_HASH_FUNC_ONE_AT_A_TIME_HARD"
1701# endif
1702# ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_OLD
1703 " PERL_HASH_FUNC_ONE_AT_A_TIME_OLD"
1704# endif
4a5df386
NC		 1705# ifdef PERL_IS_MINIPERL
1706 " PERL_IS_MINIPERL"
1707# endif
1708# ifdef PERL_MALLOC_WRAP
1709 " PERL_MALLOC_WRAP"
1710# endif
1711# ifdef PERL_MEM_LOG
1712 " PERL_MEM_LOG"
1713# endif
1714# ifdef PERL_MEM_LOG_NOIMPL
1715 " PERL_MEM_LOG_NOIMPL"
1716# endif
2542212d
DM		 1717# ifdef PERL_NEW_COPY_ON_WRITE
1718 " PERL_NEW_COPY_ON_WRITE"
1719# endif
59b86f4b
DM		 1720# ifdef PERL_PERTURB_KEYS_DETERMINISTIC
1721 " PERL_PERTURB_KEYS_DETERMINISTIC"
1722# endif
1723# ifdef PERL_PERTURB_KEYS_DISABLED
1724 " PERL_PERTURB_KEYS_DISABLED"
1725# endif
1726# ifdef PERL_PERTURB_KEYS_RANDOM
1727 " PERL_PERTURB_KEYS_RANDOM"
1728# endif
c3cf41ec
NC		 1729# ifdef PERL_PRESERVE_IVUV
1730 " PERL_PRESERVE_IVUV"
1731# endif
c051e30b
NC		 1732# ifdef PERL_RELOCATABLE_INCPUSH
1733 " PERL_RELOCATABLE_INCPUSH"
1734# endif
4a5df386
NC		 1735# ifdef PERL_USE_DEVEL
1736 " PERL_USE_DEVEL"
1737# endif
1738# ifdef PERL_USE_SAFE_PUTENV
1739 " PERL_USE_SAFE_PUTENV"
1740# endif
a3749cf3
NC		 1741# ifdef UNLINK_ALL_VERSIONS
1742 " UNLINK_ALL_VERSIONS"
1743# endif
de618ee4
NC		 1744# ifdef USE_ATTRIBUTES_FOR_PERLIO
1745 " USE_ATTRIBUTES_FOR_PERLIO"
1746# endif
4a5df386
NC		 1747# ifdef USE_FAST_STDIO
1748 " USE_FAST_STDIO"
1749# endif
59b86f4b
DM		 1750# ifdef USE_HASH_SEED_EXPLICIT
1751 " USE_HASH_SEED_EXPLICIT"
1752# endif
98548bdf
NC		 1753# ifdef USE_LOCALE
1754 " USE_LOCALE"
1755# endif
98548bdf
NC		 1756# ifdef USE_LOCALE_CTYPE
1757 " USE_LOCALE_CTYPE"
1758# endif
5a8d8935
NC		 1759# ifdef USE_PERL_ATOF
1760 " USE_PERL_ATOF"
1761# endif
0d311fbe
NC		 1762# ifdef USE_SITECUSTOMIZE
1763 " USE_SITECUSTOMIZE"
1764# endif
4a5df386
NC		 1765 ;
1766 PERL_UNUSED_ARG(cv);
1767 PERL_UNUSED_ARG(items);
1768
1769 EXTEND(SP, entries);
1770
1771 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1772 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1773 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1774
1775#ifdef __DATE__
1776# ifdef __TIME__
1777 PUSHs(Perl_newSVpvn_flags(aTHX_
1778 STR_WITH_LEN("Compiled at " __DATE__ " " __TIME__),
1779 SVs_TEMP));
1780# else
1781 PUSHs(Perl_newSVpvn_flags(aTHX_ STR_WITH_LEN("Compiled on " __DATE__),
1782 SVs_TEMP));
1783# endif
1784#else
1785 PUSHs(&PL_sv_undef);
1786#endif
1787
4a5df386
NC		 1788 for (i = 1; i <= local_patch_count; i++) {
1789 /* This will be an undef, if PL_localpatches[i] is NULL. */
1790 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1791 }
1792
1793 XSRETURN(entries);
1794}
1795
be71fc8f
NC		 1796#define INCPUSH_UNSHIFT 0x01
1797#define INCPUSH_ADD_OLD_VERS 0x02
1798#define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1799#define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1800#define INCPUSH_NOT_BASEDIR 0x10
1801#define INCPUSH_CAN_RELOCATE 0x20
1e3208d8
NC		 1802#define INCPUSH_ADD_SUB_DIRS \
1803 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
e28f3139 1804
312caa8e 1805STATIC void *
14dd3ad8 1806S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1807{
27da23d5 1808 dVAR;
2f9285f8 1809 PerlIO *rsfp;
312caa8e 1810 int argc = PL_origargc;
8f42b153 1811 char **argv = PL_origargv;
e1ec3a88 1812 const char *scriptname = NULL;
312caa8e 1813 VOL bool dosearch = FALSE;
eb578fdb 1814 char c;
737c24fc 1815 bool doextract = FALSE;
bd61b366 1816 const char *cddir = NULL;
ab019eaa 1817#ifdef USE_SITECUSTOMIZE
20ef40cf 1818 bool minus_f = FALSE;
ab019eaa 1819#endif
95670bde 1820 SV *linestr_sv = NULL;
5486870f 1821 bool add_read_e_script = FALSE;
87606032 1822 U32 lex_start_flags = 0;
009d90df 1823
ca7b837b 1824 PERL_SET_PHASE(PERL_PHASE_START);
9ebf26ad 1825
6224f72b 1826 init_main_stash();
54310121 1827
c7030b81
NC		 1828 {
1829 const char *s;
6224f72b
GS		 1830 for (argc--,argv++; argc > 0; argc--,argv++) {
1831 if (argv[0][0] != '-' || !argv[0][1])
1832 break;
6224f72b
GS		 1833 s = argv[0]+1;
1834 reswitch:
47f56822 1835 switch ((c = *s)) {
729a02f2 1836 case 'C':
1d5472a9
GS		 1837#ifndef PERL_STRICT_CR
1838 case '\r':
1839#endif
6224f72b
GS		 1840 case ' ':
1841 case '0':
1842 case 'F':
1843 case 'a':
1844 case 'c':
1845 case 'd':
1846 case 'D':
1847 case 'h':
1848 case 'i':
1849 case 'l':
1850 case 'M':
1851 case 'm':
1852 case 'n':
1853 case 'p':
1854 case 's':
1855 case 'u':
1856 case 'U':
1857 case 'v':
599cee73
PM		 1858 case 'W':
1859 case 'X':
6224f72b 1860 case 'w':
97bd5664 1861 if ((s = moreswitches(s)))
6224f72b
GS		 1862 goto reswitch;
1863 break;
33b78306 1864
1dbad523 1865 case 't':
dc6d7f5c 1866#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 1867 /* silently ignore */
dc6d7f5c 1868#elif defined(NO_TAINT_SUPPORT)
3231f579 1869 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
S		 1870 "Cowardly refusing to run with -t or -T flags");
1871#else
22f7c9c9 1872 CHECK_MALLOC_TOO_LATE_FOR('t');
284167a5
S		 1873 if( !TAINTING_get ) {
1874 TAINT_WARN_set(TRUE);
1875 TAINTING_set(TRUE);
317ea90d 1876 }
284167a5 1877#endif
317ea90d
MS		 1878 s++;
1879 goto reswitch;
6224f72b 1880 case 'T':
dc6d7f5c 1881#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 1882 /* silently ignore */
dc6d7f5c 1883#elif defined(NO_TAINT_SUPPORT)
3231f579 1884 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
S		 1885 "Cowardly refusing to run with -t or -T flags");
1886#else
22f7c9c9 1887 CHECK_MALLOC_TOO_LATE_FOR('T');
284167a5
S		 1888 TAINTING_set(TRUE);
1889 TAINT_WARN_set(FALSE);
1890#endif
6224f72b
GS		 1891 s++;
1892 goto reswitch;
f86702cc 1893
bc9b29db
RH		 1894 case 'E':
1895 PL_minus_E = TRUE;
924ba076 1896 /* FALLTHROUGH */
6224f72b 1897 case 'e':
f20b2998 1898 forbid_setid('e', FALSE);
3280af22 1899 if (!PL_e_script) {
396482e1 1900 PL_e_script = newSVpvs("");
5486870f 1901 add_read_e_script = TRUE;
6224f72b
GS		 1902 }
1903 if (*++s)
3280af22 1904 sv_catpv(PL_e_script, s);
6224f72b 1905 else if (argv[1]) {
3280af22 1906 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS		 1907 argc--,argv++;
1908 }
1909 else
47f56822 1910 Perl_croak(aTHX_ "No code specified for -%c", c);
396482e1 1911 sv_catpvs(PL_e_script, "\n");
6224f72b 1912 break;
afe37c7d 1913
20ef40cf 1914 case 'f':
f5542d3a 1915#ifdef USE_SITECUSTOMIZE
20ef40cf 1916 minus_f = TRUE;
f5542d3a 1917#endif
20ef40cf
GA		 1918 s++;
1919 goto reswitch;
1920
6224f72b 1921 case 'I': /* -I handled both here and in moreswitches() */
f20b2998 1922 forbid_setid('I', FALSE);
bd61b366 1923 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS		 1924 argc--,argv++;
1925 }
6224f72b 1926 if (s && *s) {
0df16ed7 1927 STRLEN len = strlen(s);
55b4bc1c 1928 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
0df16ed7
GS		 1929 }
1930 else
a67e862a 1931 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b 1932 break;
6224f72b 1933 case 'S':
f20b2998 1934 forbid_setid('S', FALSE);
6224f72b
GS		 1935 dosearch = TRUE;
1936 s++;
1937 goto reswitch;
1938 case 'V':
7edfd0ef
NC		 1939 {
1940 SV *opts_prog;
1941
7edfd0ef 1942 if (*++s != ':') {
37ca4a5b 1943 opts_prog = newSVpvs("use Config; Config::_V()");
7edfd0ef
NC		 1944 }
1945 else {
1946 ++s;
1947 opts_prog = Perl_newSVpvf(aTHX_
37ca4a5b 1948 "use Config; Config::config_vars(qw%c%s%c)",
7edfd0ef
NC		 1949 0, s, 0);
1950 s += strlen(s);
1951 }
37ca4a5b 1952 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
7edfd0ef
NC		 1953 /* don't look for script or read stdin */
1954 scriptname = BIT_BUCKET;
1955 goto reswitch;
6224f72b 1956 }
6224f72b 1957 case 'x':
737c24fc 1958 doextract = TRUE;
6224f72b 1959 s++;
304334da 1960 if (*s)
f4c556ac 1961 cddir = s;
6224f72b
GS		 1962 break;
1963 case 0:
1964 break;
1965 case '-':
1966 if (!*++s || isSPACE(*s)) {
1967 argc--,argv++;
1968 goto switch_end;
1969 }
ee8bc8b7
NC		 1970 /* catch use of gnu style long options.
1971 Both of these exit immediately. */
1972 if (strEQ(s, "version"))
1973 minus_v();
1974 if (strEQ(s, "help"))
1975 usage();
6224f72b 1976 s--;
924ba076 1977 /* FALLTHROUGH */
6224f72b 1978 default:
cea2e8a9 1979 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW		 1980 }
1981 }
c7030b81
NC		 1982 }
1983
6224f72b 1984 switch_end:
54310121 1985
c7030b81
NC		 1986 {
1987 char *s;
1988
f675dbe5
CB		 1989 if (
1990#ifndef SECURE_INTERNAL_GETENV
284167a5 1991 !TAINTING_get &&
f675dbe5 1992#endif
cf756827 1993 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1994 {
74288ac8
GS		 1995 while (isSPACE(*s))
1996 s++;
317ea90d 1997 if (*s == '-' && *(s+1) == 'T') {
dc6d7f5c 1998#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 1999 /* silently ignore */
dc6d7f5c 2000#elif defined(NO_TAINT_SUPPORT)
3231f579 2001 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
S		 2002 "Cowardly refusing to run with -t or -T flags");
2003#else
22f7c9c9 2004 CHECK_MALLOC_TOO_LATE_FOR('T');
284167a5
S		 2005 TAINTING_set(TRUE);
2006 TAINT_WARN_set(FALSE);
2007#endif
317ea90d 2008 }
74288ac8 2009 else {
bd61b366 2010 char *popt_copy = NULL;
74288ac8 2011 while (s && *s) {
54913509 2012 const char *d;
74288ac8
GS		 2013 while (isSPACE(*s))
2014 s++;
2015 if (*s == '-') {
2016 s++;
2017 if (isSPACE(*s))
2018 continue;
2019 }
4ea8f8fb 2020 d = s;
74288ac8
GS		 2021 if (!*s)
2022 break;
2b622f1a 2023 if (!strchr("CDIMUdmtwW", *s))
cea2e8a9 2024 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS		 2025 while (++s && *s) {
2026 if (isSPACE(*s)) {
cf756827 2027 if (!popt_copy) {
bfa6c418
NC		 2028 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
2029 s = popt_copy + (s - d);
2030 d = popt_copy;
cf756827 2031 }
4ea8f8fb
MS		 2032 *s++ = '\0';
2033 break;
2034 }
2035 }
1c4db469 2036 if (*d == 't') {
dc6d7f5c 2037#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 2038 /* silently ignore */
dc6d7f5c 2039#elif defined(NO_TAINT_SUPPORT)
3231f579 2040 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
S		 2041 "Cowardly refusing to run with -t or -T flags");
2042#else
2043 if( !TAINTING_get) {
2044 TAINT_WARN_set(TRUE);
2045 TAINTING_set(TRUE);
317ea90d 2046 }
284167a5 2047#endif
1c4db469 2048 } else {
97bd5664 2049 moreswitches(d);
1c4db469 2050 }
6224f72b 2051 }
6224f72b
GS		 2052 }
2053 }
c7030b81 2054 }
a0d0e21e 2055
c29067d7
CH		 2056 /* Set $^X early so that it can be used for relocatable paths in @INC */
2057 /* and for SITELIB_EXP in USE_SITECUSTOMIZE */
284167a5 2058 assert (!TAINT_get);
c29067d7 2059 TAINT;
e2051532 2060 set_caret_X();
c29067d7
CH		 2061 TAINT_NOT;
2062
43c0c913 2063#if defined(USE_SITECUSTOMIZE)
20ef40cf 2064 if (!minus_f) {
43c0c913 2065 /* The games with local $! are to avoid setting errno if there is no
fc81b718
NC		 2066 sitecustomize script. "q%c...%c", 0, ..., 0 becomes "q\0...\0",
2067 ie a q() operator with a NUL byte as a the delimiter. This avoids
2068 problems with pathnames containing (say) ' */
43c0c913
NC		 2069# ifdef PERL_IS_MINIPERL
2070 AV *const inc = GvAV(PL_incgv);
2071 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
2072
2073 if (inc0) {
15870c5c
NC		 2074 /* if lib/buildcustomize.pl exists, it should not fail. If it does,
2075 it should be reported immediately as a build failure. */
43c0c913
NC		 2076 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2077 Perl_newSVpvf(aTHX_
5de87db5 2078 "BEGIN { my $f = q%c%s%"SVf"/buildcustomize.pl%c; "
af26e4f2
FC		 2079 "do {local $!; -f $f }"
2080 " and do $f || die $@ || qq '$f: $!' }",
5de87db5 2081 0, (TAINTING_get ? "./" : ""), SVfARG(*inc0), 0));
43c0c913
NC		 2082 }
2083# else
2084 /* SITELIB_EXP is a function call on Win32. */
c29067d7 2085 const char *const raw_sitelib = SITELIB_EXP;
bac5c4fc
JD		 2086 if (raw_sitelib) {
2087 /* process .../.. if PERL_RELOCATABLE_INC is defined */
2088 SV *sitelib_sv = mayberelocate(raw_sitelib, strlen(raw_sitelib),
2089 INCPUSH_CAN_RELOCATE);
2090 const char *const sitelib = SvPVX(sitelib_sv);
2091 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2092 Perl_newSVpvf(aTHX_
2093 "BEGIN { do {local $!; -f q%c%s/sitecustomize.pl%c} && do q%c%s/sitecustomize.pl%c }",
c1f6cd39
BF		 2094 0, SVfARG(sitelib), 0,
2095 0, SVfARG(sitelib), 0));
bac5c4fc
JD		 2096 assert (SvREFCNT(sitelib_sv) == 1);
2097 SvREFCNT_dec(sitelib_sv);
2098 }
43c0c913 2099# endif
20ef40cf
GA		 2100 }
2101#endif
2102
6224f72b
GS		 2103 if (!scriptname)
2104 scriptname = argv[0];
3280af22 2105 if (PL_e_script) {
6224f72b
GS		 2106 argc++,argv--;
2107 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2108 }
bd61b366 2109 else if (scriptname == NULL) {
6224f72b
GS		 2110#ifdef MSDOS
2111 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 2112 moreswitches("h");
6224f72b
GS		 2113#endif
2114 scriptname = "-";
2115 }
2116
284167a5 2117 assert (!TAINT_get);
2cace6ac 2118 init_perllib();
6224f72b 2119
a52eba0e 2120 {
f20b2998 2121 bool suidscript = FALSE;
829372d3 2122
8d113837 2123 rsfp = open_script(scriptname, dosearch, &suidscript);
c0b3891a
NC		 2124 if (!rsfp) {
2125 rsfp = PerlIO_stdin();
87606032 2126 lex_start_flags = LEX_DONT_CLOSE_RSFP;
c0b3891a 2127 }
6224f72b 2128
b24bc095 2129 validate_suid(rsfp);
6224f72b 2130
64ca3a65 2131#ifndef PERL_MICRO
a52eba0e
NC		 2132# if defined(SIGCHLD) || defined(SIGCLD)
2133 {
2134# ifndef SIGCHLD
2135# define SIGCHLD SIGCLD
2136# endif
2137 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2138 if (sigstate == (Sighandler_t) SIG_IGN) {
a2a5de95
NC		 2139 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2140 "Can't ignore signal CHLD, forcing to default");
a52eba0e
NC		 2141 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2142 }
0b5b802d 2143 }
a52eba0e 2144# endif
64ca3a65 2145#endif
0b5b802d 2146
737c24fc 2147 if (doextract) {
faef540c 2148
f20b2998 2149 /* This will croak if suidscript is true, as -x cannot be used with
faef540c
NC		 2150 setuid scripts. */
2151 forbid_setid('x', suidscript);
f20b2998 2152 /* Hence you can't get here if suidscript is true */
faef540c 2153
95670bde
NC		 2154 linestr_sv = newSV_type(SVt_PV);
2155 lex_start_flags |= LEX_START_COPIED;
2f9285f8 2156 find_beginning(linestr_sv, rsfp);
a52eba0e
NC		 2157 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2158 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2159 }
f4c556ac 2160 }
6224f72b 2161
ea726b52 2162 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
3280af22
NIS		 2163 CvUNIQUE_on(PL_compcv);
2164
eacbb379 2165 CvPADLIST_set(PL_compcv, pad_new(0));
6224f72b 2166
dd69841b
BB		 2167 PL_isarev = newHV();
2168
0c4f7ff0 2169 boot_core_PerlIO();
6224f72b 2170 boot_core_UNIVERSAL();
e1a479c5 2171 boot_core_mro();
4a5df386 2172 newXS("Internals::V", S_Internals_V, __FILE__);
6224f72b
GS		 2173
2174 if (xsinit)
acfe0abc 2175 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2176#ifndef PERL_MICRO
739a0b84 2177#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(SYMBIAN)
c5be433b 2178 init_os_extras();
6224f72b 2179#endif
64ca3a65 2180#endif
6224f72b 2181
29209bc5 2182#ifdef USE_SOCKS
1b9c9cf5
DH		 2183# ifdef HAS_SOCKS5_INIT
2184 socks5_init(argv[0]);
2185# else
29209bc5 2186 SOCKSinit(argv[0]);
1b9c9cf5 2187# endif
ac27b0f5 2188#endif
29209bc5 2189
6224f72b
GS		 2190 init_predump_symbols();
2191 /* init_postdump_symbols not currently designed to be called */
2192 /* more than once (ENV isn't cleared first, for example) */
2193 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2194 if (!PL_do_undump)
6224f72b
GS		 2195 init_postdump_symbols(argc,argv,env);
2196
27da23d5
JH		 2197 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2198 * or explicitly in some platforms.
085a54d9 2199 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2200 * look like the user wants to use UTF-8. */
a0fd4948 2201#if defined(__SYMBIAN32__)
27da23d5
JH		 2202 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2203#endif
e27b5b51 2204# ifndef PERL_IS_MINIPERL
06e66572
JH		 2205 if (PL_unicode) {
2206 /* Requires init_predump_symbols(). */
a05d7ebb 2207 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH		 2208 IO* io;
2209 PerlIO* fp;
2210 SV* sv;
2211
a05d7ebb 2212 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2213 * and the default open disciplines. */
a05d7ebb
JH		 2214 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2215 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2216 (fp = IoIFP(io)))
2217 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2218 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2219 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2220 (fp = IoOFP(io)))
2221 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2222 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2223 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2224 (fp = IoOFP(io)))
2225 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2226 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC		 2227 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2228 SVt_PV)))) {
a05d7ebb
JH		 2229 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2230 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2231 if (in) {
2232 if (out)
76f68e9b 2233 sv_setpvs(sv, ":utf8\0:utf8");
a05d7ebb 2234 else
76f68e9b 2235 sv_setpvs(sv, ":utf8\0");
a05d7ebb
JH		 2236 }
2237 else if (out)
76f68e9b 2238 sv_setpvs(sv, "\0:utf8");
a05d7ebb
JH		 2239 SvSETMAGIC(sv);
2240 }
b310b053
JH		 2241 }
2242 }
e27b5b51 2243#endif
b310b053 2244
c7030b81
NC		 2245 {
2246 const char *s;
4ffa73a3
JH		 2247 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2248 if (strEQ(s, "unsafe"))
2249 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2250 else if (strEQ(s, "safe"))
2251 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2252 else
2253 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2254 }
c7030b81 2255 }
4ffa73a3 2256
81d86705 2257
87606032 2258 lex_start(linestr_sv, rsfp, lex_start_flags);
d2687c98 2259 SvREFCNT_dec(linestr_sv);
95670bde 2260
219f7226 2261 PL_subname = newSVpvs("main");
6224f72b 2262
5486870f
DM		 2263 if (add_read_e_script)
2264 filter_add(read_e_script, NULL);
2265
6224f72b
GS		 2266 /* now parse the script */
2267
93189314 2268 SETERRNO(0,SS_NORMAL);
28ac2b49 2269 if (yyparse(GRAMPROG) || PL_parser->error_count) {
3280af22 2270 if (PL_minus_c)
cea2e8a9 2271 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2272 else {
cea2e8a9 2273 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2274 PL_origfilename);
6224f72b
GS		 2275 }
2276 }
57843af0 2277 CopLINE_set(PL_curcop, 0);
03d9f026 2278 SET_CURSTASH(PL_defstash);
3280af22
NIS		 2279 if (PL_e_script) {
2280 SvREFCNT_dec(PL_e_script);
a0714e2c 2281 PL_e_script = NULL;
6224f72b
GS		 2282 }
2283
3280af22 2284 if (PL_do_undump)
6224f72b
GS		 2285 my_unexec();
2286
57843af0
GS		 2287 if (isWARN_ONCE) {
2288 SAVECOPFILE(PL_curcop);
2289 SAVECOPLINE(PL_curcop);
3280af22 2290 gv_check(PL_defstash);
57843af0 2291 }
6224f72b
GS		 2292
2293 LEAVE;
2294 FREETMPS;
2295
2296#ifdef MYMALLOC
f6a607bc
RGS		 2297 {
2298 const char *s;
96e440d2
JH		 2299 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && grok_atou(s, NULL) >= 2)
2300 dump_mstats("after compilation:");
f6a607bc 2301 }
6224f72b
GS		 2302#endif
2303
2304 ENTER;
febb3a6d 2305 PL_restartjmpenv = NULL;
3280af22 2306 PL_restartop = 0;
312caa8e 2307 return NULL;
6224f72b
GS		 2308}
2309
954c1994
GS		 2310/*
2311=for apidoc perl_run
2312
2313Tells a Perl interpreter to run. See L<perlembed>.
2314
2315=cut
2316*/
2317
6224f72b 2318int
0cb96387 2319perl_run(pTHXx)
6224f72b 2320{
6224f72b 2321 I32 oldscope;
14dd3ad8 2322 int ret = 0;
db36c5a1 2323 dJMPENV;
6224f72b 2324
7918f24d
NC		 2325 PERL_ARGS_ASSERT_PERL_RUN;
2326#ifndef MULTIPLICITY
ed6c66dd 2327 PERL_UNUSED_ARG(my_perl);
7918f24d 2328#endif
9d4ba2ae 2329
3280af22 2330 oldscope = PL_scopestack_ix;
96e176bf
CL		 2331#ifdef VMS
2332 VMSISH_HUSHED = 0;
2333#endif
6224f72b 2334
14dd3ad8 2335 JMPENV_PUSH(ret);
6224f72b
GS		 2336 switch (ret) {
2337 case 1:
2338 cxstack_ix = -1; /* start context stack again */
312caa8e 2339 goto redo_body;
14dd3ad8 2340 case 0: /* normal completion */
14dd3ad8
GS		 2341 redo_body:
2342 run_body(oldscope);
924ba076 2343 /* FALLTHROUGH */
14dd3ad8 2344 case 2: /* my_exit() */
3280af22 2345 while (PL_scopestack_ix > oldscope)
6224f72b
GS		 2346 LEAVE;
2347 FREETMPS;
03d9f026 2348 SET_CURSTASH(PL_defstash);
3a1ee7e8 2349 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
9ebf26ad 2350 PL_endav && !PL_minus_c) {
ca7b837b 2351 PERL_SET_PHASE(PERL_PHASE_END);
31d77e54 2352 call_list(oldscope, PL_endav);
9ebf26ad 2353 }
6224f72b
GS		 2354#ifdef MYMALLOC
2355 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2356 dump_mstats("after execution: ");
2357#endif
37038d91 2358 ret = STATUS_EXIT;
14dd3ad8 2359 break;
6224f72b 2360 case 3:
312caa8e
CS		 2361 if (PL_restartop) {
2362 POPSTACK_TO(PL_mainstack);
2363 goto redo_body;
6224f72b 2364 }
5637ef5b 2365 PerlIO_printf(Perl_error_log, "panic: restartop in perl_run\n");
312caa8e 2366 FREETMPS;
14dd3ad8
GS		 2367 ret = 1;
2368 break;
6224f72b
GS		 2369 }
2370
14dd3ad8
GS		 2371 JMPENV_POP;
2372 return ret;
312caa8e
CS		 2373}
2374
dd374669 2375STATIC void
14dd3ad8
GS		 2376S_run_body(pTHX_ I32 oldscope)
2377{
d3b97530
DM		 2378 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support (0x%x).\n",
2379 PL_sawampersand ? "Enabling" : "Omitting",
2380 (unsigned int)(PL_sawampersand)));
6224f72b 2381
3280af22 2382 if (!PL_restartop) {
cf2782cd 2383#ifdef DEBUGGING
f0e3f042
CS		 2384 if (DEBUG_x_TEST || DEBUG_B_TEST)
2385 dump_all_perl(!DEBUG_B_TEST);
ecae49c0
NC		 2386 if (!DEBUG_q_TEST)
2387 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2388#endif
6224f72b 2389
3280af22 2390 if (PL_minus_c) {
bf49b057 2391 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
6224f72b
GS		 2392 my_exit(0);
2393 }
3280af22 2394 if (PERLDB_SINGLE && PL_DBsingle)
a6d69523 2395 PL_DBsingle_iv = 1;
9ebf26ad 2396 if (PL_initav) {
ca7b837b 2397 PERL_SET_PHASE(PERL_PHASE_INIT);
3280af22 2398 call_list(oldscope, PL_initav);
9ebf26ad 2399 }
f1fac472 2400#ifdef PERL_DEBUG_READONLY_OPS
3107b51f
FC		 2401 if (PL_main_root && PL_main_root->op_slabbed)
2402 Slab_to_ro(OpSLAB(PL_main_root));
f1fac472 2403#endif
6224f72b
GS		 2404 }
2405
2406 /* do it */
2407
ca7b837b 2408 PERL_SET_PHASE(PERL_PHASE_RUN);
9ebf26ad 2409
3280af22 2410 if (PL_restartop) {
febb3a6d 2411 PL_restartjmpenv = NULL;
533c011a 2412 PL_op = PL_restartop;
3280af22 2413 PL_restartop = 0;
cea2e8a9 2414 CALLRUNOPS(aTHX);
6224f72b 2415 }
3280af22
NIS		 2416 else if (PL_main_start) {
2417 CvDEPTH(PL_main_cv) = 1;
533c011a 2418 PL_op = PL_main_start;
cea2e8a9 2419 CALLRUNOPS(aTHX);
6224f72b 2420 }
f6b3007c 2421 my_exit(0);
a25b5927 2422 assert(0); /* NOTREACHED */
6224f72b
GS		 2423}
2424
954c1994 2425/*
ccfc67b7
JH		 2426=head1 SV Manipulation Functions
2427
954c1994
GS		 2428=for apidoc p||get_sv
2429
64ace3f8 2430Returns the SV of the specified Perl scalar. C<flags> are passed to
72d33970 2431C<gv_fetchpv>. If C<GV_ADD> is set and the
64ace3f8
NC		 2432Perl variable does not exist then it will be created. If C<flags> is zero
2433and the variable does not exist then NULL is returned.
954c1994
GS		 2434
2435=cut
2436*/
2437
6224f72b 2438SV*
64ace3f8 2439Perl_get_sv(pTHX_ const char *name, I32 flags)
6224f72b
GS		 2440{
2441 GV *gv;
7918f24d
NC		 2442
2443 PERL_ARGS_ASSERT_GET_SV;
2444
64ace3f8 2445 gv = gv_fetchpv(name, flags, SVt_PV);
6224f72b
GS		 2446 if (gv)
2447 return GvSV(gv);
a0714e2c 2448 return NULL;
6224f72b
GS		 2449}
2450
954c1994 2451/*
ccfc67b7
JH		 2452=head1 Array Manipulation Functions
2453
954c1994
GS		 2454=for apidoc p||get_av
2455
f0b90de1
SF		 2456Returns the AV of the specified Perl global or package array with the given
2457name (so it won't work on lexical variables). C<flags> are passed
72d33970 2458to C<gv_fetchpv>. If C<GV_ADD> is set and the
cbfd0a87
NC		 2459Perl variable does not exist then it will be created. If C<flags> is zero
2460and the variable does not exist then NULL is returned.
954c1994 2461
f0b90de1
SF		 2462Perl equivalent: C<@{"$name"}>.
2463
954c1994
GS		 2464=cut
2465*/
2466
6224f72b 2467AV*
cbfd0a87 2468Perl_get_av(pTHX_ const char *name, I32 flags)
6224f72b 2469{
cbfd0a87 2470 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
7918f24d
NC		 2471
2472 PERL_ARGS_ASSERT_GET_AV;
2473
cbfd0a87 2474 if (flags)
6224f72b
GS		 2475 return GvAVn(gv);
2476 if (gv)
2477 return GvAV(gv);
7d49f689 2478 return NULL;
6224f72b
GS		 2479}
2480
954c1994 2481/*
ccfc67b7
JH		 2482=head1 Hash Manipulation Functions
2483
954c1994
GS		 2484=for apidoc p||get_hv
2485
6673a63c 2486Returns the HV of the specified Perl hash. C<flags> are passed to
72d33970 2487C<gv_fetchpv>. If C<GV_ADD> is set and the
6673a63c
NC		 2488Perl variable does not exist then it will be created. If C<flags> is zero
2489and the variable does not exist then NULL is returned.
954c1994
GS		 2490
2491=cut
2492*/
2493
6224f72b 2494HV*
6673a63c 2495Perl_get_hv(pTHX_ const char *name, I32 flags)
6224f72b 2496{
6673a63c 2497 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
7918f24d
NC		 2498
2499 PERL_ARGS_ASSERT_GET_HV;
2500
6673a63c 2501 if (flags)
a0d0e21e
LW		 2502 return GvHVn(gv);
2503 if (gv)
2504 return GvHV(gv);
5c284bb0 2505 return NULL;
a0d0e21e
LW		 2506}
2507
954c1994 2508/*
ccfc67b7
JH		 2509=head1 CV Manipulation Functions
2510
780a5241
NC		 2511=for apidoc p||get_cvn_flags
2512
2513Returns the CV of the specified Perl subroutine. C<flags> are passed to
72d33970 2514C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
780a5241
NC		 2515exist then it will be declared (which has the same effect as saying
2516C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2517then NULL is returned.
2518
954c1994
GS		 2519=for apidoc p||get_cv
2520
780a5241 2521Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
954c1994
GS		 2522
2523=cut
2524*/
2525
a0d0e21e 2526CV*
780a5241 2527Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
a0d0e21e 2528{
780a5241 2529 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
7918f24d
NC		 2530
2531 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2532
334dda80
FC		 2533 /* XXX this is probably not what they think they're getting.
2534 * It has the same effect as "sub name;", i.e. just a forward
2535 * declaration! */
780a5241 2536 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
186a5ba8 2537 return newSTUB(gv,0);
780a5241 2538 }
a0d0e21e 2539 if (gv)
8ebc5c01 2540 return GvCVu(gv);
601f1833 2541 return NULL;
a0d0e21e
LW		 2542}
2543
2c67934f
NC		 2544/* Nothing in core calls this now, but we can't replace it with a macro and
2545 move it to mathoms.c as a macro would evaluate name twice. */
780a5241
NC		 2546CV*
2547Perl_get_cv(pTHX_ const char *name, I32 flags)
2548{
7918f24d
NC		 2549 PERL_ARGS_ASSERT_GET_CV;
2550
780a5241
NC		 2551 return get_cvn_flags(name, strlen(name), flags);
2552}
2553
79072805
LW		 2554/* Be sure to refetch the stack pointer after calling these routines. */
2555
954c1994 2556/*
ccfc67b7
JH		 2557
2558=head1 Callback Functions
2559
954c1994
GS		 2560=for apidoc p||call_argv
2561
f0b90de1 2562Performs a callback to the specified named and package-scoped Perl subroutine
72d33970
FC		 2563with C<argv> (a NULL-terminated array of strings) as arguments. See
2564L<perlcall>.
f0b90de1
SF		 2565
2566Approximate Perl equivalent: C<&{"$sub_name"}(@$argv)>.
954c1994
GS		 2567
2568=cut
2569*/
2570
a0d0e21e 2571I32
5aaab254 2572Perl_call_argv(pTHX_ const char *sub_name, I32 flags, char **argv)
ac27b0f5 2573
8ac85365
NIS		 2574 /* See G_* flags in cop.h */
2575 /* null terminated arg list */
8990e307 2576{
a0d0e21e 2577 dSP;
8990e307 2578
7918f24d
NC		 2579 PERL_ARGS_ASSERT_CALL_ARGV;
2580
924508f0 2581 PUSHMARK(SP);
a0d0e21e 2582 if (argv) {
8990e307 2583 while (*argv) {
6e449a3a 2584 mXPUSHs(newSVpv(*argv,0));
8990e307
LW		 2585 argv++;
2586 }
a0d0e21e 2587 PUTBACK;
8990e307 2588 }
864dbfa3 2589 return call_pv(sub_name, flags);
8990e307
LW		 2590}
2591
954c1994
GS		 2592/*
2593=for apidoc p||call_pv
2594
2595Performs a callback to the specified Perl sub. See L<perlcall>.
2596
2597=cut
2598*/
2599
a0d0e21e 2600I32
864dbfa3 2601Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS		 2602 /* name of the subroutine */
2603 /* See G_* flags in cop.h */
a0d0e21e 2604{
7918f24d
NC		 2605 PERL_ARGS_ASSERT_CALL_PV;
2606
0da0e728 2607 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
a0d0e21e
LW		 2608}
2609
954c1994
GS		 2610/*
2611=for apidoc p||call_method
2612
2613Performs a callback to the specified Perl method. The blessed object must
2614be on the stack. See L<perlcall>.
2615
2616=cut
2617*/
2618
a0d0e21e 2619I32
864dbfa3 2620Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS		 2621 /* name of the subroutine */
2622 /* See G_* flags in cop.h */
a0d0e21e 2623{
46ca9bac 2624 STRLEN len;
c106c2be 2625 SV* sv;
7918f24d
NC		 2626 PERL_ARGS_ASSERT_CALL_METHOD;
2627
46ca9bac 2628 len = strlen(methname);
c106c2be
RZ		 2629 sv = flags & G_METHOD_NAMED
2630 ? sv_2mortal(newSVpvn_share(methname, len,0))
2631 : newSVpvn_flags(methname, len, SVs_TEMP);
46ca9bac 2632
c106c2be 2633 return call_sv(sv, flags | G_METHOD);
a0d0e21e
LW		 2634}
2635
2636/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS		 2637/*
2638=for apidoc p||call_sv
2639
2640Performs a callback to the Perl sub whose name is in the SV. See
2641L<perlcall>.
2642
2643=cut
2644*/
2645
a0d0e21e 2646I32
001d637e 2647Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
8ac85365 2648 /* See G_* flags in cop.h */
a0d0e21e 2649{
27da23d5 2650 dVAR; dSP;
a0d0e21e 2651 LOGOP myop; /* fake syntax tree node */
b46e009d 2652 METHOP method_op;
aa689395 2653 I32 oldmark;
8ea43dc8 2654 VOL I32 retval = 0;
a0d0e21e 2655 I32 oldscope;
54310121 2656 bool oldcatch = CATCH_GET;
6224f72b 2657 int ret;
c4420975 2658 OP* const oldop = PL_op;
db36c5a1 2659 dJMPENV;
1e422769 2660
7918f24d
NC		 2661 PERL_ARGS_ASSERT_CALL_SV;
2662
a0d0e21e
LW		 2663 if (flags & G_DISCARD) {
2664 ENTER;
2665 SAVETMPS;
2666 }
2f8edad0
NC		 2667 if (!(flags & G_WANT)) {
2668 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2669 */
2670 flags |= G_SCALAR;
2671 }
a0d0e21e 2672
aa689395 2673 Zero(&myop, 1, LOGOP);
f51d4af5 2674 if (!(flags & G_NOARGS))
aa689395 2675 myop.op_flags |= OPf_STACKED;
4f911530 2676 myop.op_flags |= OP_GIMME_REVERSE(flags);
462e5cf6 2677 SAVEOP();
533c011a 2678 PL_op = (OP*)&myop;
aa689395 2679
3280af22 2680 EXTEND(PL_stack_sp, 1);
c106c2be
RZ		 2681 if (!(flags & G_METHOD_NAMED))
2682 *++PL_stack_sp = sv;
aa689395 2683 oldmark = TOPMARK;
3280af22 2684 oldscope = PL_scopestack_ix;
a0d0e21e 2685
3280af22 2686 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2687 /* Handle first BEGIN of -d. */
3280af22 2688 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24 2689 /* Try harder, since this may have been a sighandler, thus
2690 * curstash may be meaningless. */
ea726b52 2691 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
491527d0 2692 && !(flags & G_NODEBUG))
5ff48db8 2693 myop.op_private |= OPpENTERSUB_DB;
a0d0e21e 2694
c106c2be 2695 if (flags & (G_METHOD|G_METHOD_NAMED)) {
b46e009d 2696 Zero(&method_op, 1, METHOP);
2697 method_op.op_next = (OP*)&myop;
2698 PL_op = (OP*)&method_op;
c106c2be 2699 if ( flags & G_METHOD_NAMED ) {
b46e009d 2700 method_op.op_ppaddr = PL_ppaddr[OP_METHOD_NAMED];
2701 method_op.op_type = OP_METHOD_NAMED;
2702 method_op.op_u.op_meth_sv = sv;
c106c2be 2703 } else {
b46e009d 2704 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2705 method_op.op_type = OP_METHOD;
c106c2be
RZ		 2706 }
2707 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
2708 myop.op_type = OP_ENTERSUB;
968b3946
GS		 2709 }
2710
312caa8e 2711 if (!(flags & G_EVAL)) {
0cdb2077 2712 CATCH_SET(TRUE);
d6f07c05 2713 CALL_BODY_SUB((OP*)&myop);
312caa8e 2714 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2715 CATCH_SET(oldcatch);
312caa8e
CS		 2716 }
2717 else {
d78bda3d 2718 myop.op_other = (OP*)&myop;
3280af22 2719 PL_markstack_ptr--;
edb2152a 2720 create_eval_scope(flags|G_FAKINGEVAL);
3280af22 2721 PL_markstack_ptr++;
a0d0e21e 2722
14dd3ad8 2723 JMPENV_PUSH(ret);
edb2152a 2724
6224f72b
GS		 2725 switch (ret) {
2726 case 0:
14dd3ad8 2727 redo_body:
d6f07c05 2728 CALL_BODY_SUB((OP*)&myop);
312caa8e 2729 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2730 if (!(flags & G_KEEPERR)) {
ab69dbc2 2731 CLEAR_ERRSV();
8433848b 2732 }
a0d0e21e 2733 break;
6224f72b 2734 case 1:
f86702cc 2735 STATUS_ALL_FAILURE;
924ba076 2736 /* FALLTHROUGH */
6224f72b 2737 case 2:
a0d0e21e 2738 /* my_exit() was called */
03d9f026 2739 SET_CURSTASH(PL_defstash);
a0d0e21e 2740 FREETMPS;
14dd3ad8 2741 JMPENV_POP;
f86702cc 2742 my_exit_jump();
a25b5927 2743 assert(0); /* NOTREACHED */
6224f72b 2744 case 3:
3280af22 2745 if (PL_restartop) {
febb3a6d 2746 PL_restartjmpenv = NULL;
533c011a 2747 PL_op = PL_restartop;
3280af22 2748 PL_restartop = 0;
312caa8e 2749 goto redo_body;
a0d0e21e 2750 }
3280af22 2751 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2752 if ((flags & G_WANT) == G_ARRAY)
a0d0e21e
LW		 2753 retval = 0;
2754 else {
2755 retval = 1;
3280af22 2756 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2757 }
312caa8e 2758 break;
a0d0e21e 2759 }
a0d0e21e 2760
edb2152a
NC		 2761 if (PL_scopestack_ix > oldscope)
2762 delete_eval_scope();
14dd3ad8 2763 JMPENV_POP;
a0d0e21e 2764 }
1e422769 2765
a0d0e21e 2766 if (flags & G_DISCARD) {
3280af22 2767 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW		 2768 retval = 0;
2769 FREETMPS;
2770 LEAVE;
2771 }
533c011a 2772 PL_op = oldop;
a0d0e21e
LW		 2773 return retval;
2774}
2775
6e72f9df 2776/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2777
954c1994
GS		 2778/*
2779=for apidoc p||eval_sv
2780
72d33970
FC		 2781Tells Perl to C<eval> the string in the SV. It supports the same flags
2782as C<call_sv>, with the obvious exception of G_EVAL. See L<perlcall>.
954c1994
GS		 2783
2784=cut
2785*/
2786
a0d0e21e 2787I32
864dbfa3 2788Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2789
8ac85365 2790 /* See G_* flags in cop.h */
a0d0e21e 2791{
97aff369 2792 dVAR;
924508f0 2793 dSP;
a0d0e21e 2794 UNOP myop; /* fake syntax tree node */
8ea43dc8
SP		 2795 VOL I32 oldmark = SP - PL_stack_base;
2796 VOL I32 retval = 0;
6224f72b 2797 int ret;
c4420975 2798 OP* const oldop = PL_op;
db36c5a1 2799 dJMPENV;
84902520 2800
7918f24d
NC		 2801 PERL_ARGS_ASSERT_EVAL_SV;
2802
4633a7c4
LW		 2803 if (flags & G_DISCARD) {
2804 ENTER;
2805 SAVETMPS;
2806 }
2807
462e5cf6 2808 SAVEOP();
533c011a 2809 PL_op = (OP*)&myop;
5ff48db8 2810 Zero(&myop, 1, UNOP);
3280af22
NIS		 2811 EXTEND(PL_stack_sp, 1);
2812 *++PL_stack_sp = sv;
79072805 2813
4633a7c4
LW		 2814 if (!(flags & G_NOARGS))
2815 myop.op_flags = OPf_STACKED;
6e72f9df 2816 myop.op_type = OP_ENTEREVAL;
4f911530 2817 myop.op_flags |= OP_GIMME_REVERSE(flags);
6e72f9df 2818 if (flags & G_KEEPERR)
2819 myop.op_flags |= OPf_SPECIAL;
a1941760
DM		 2820
2821 if (flags & G_RE_REPARSING)
2822 myop.op_private = (OPpEVAL_COPHH | OPpEVAL_RE_REPARSING);
4633a7c4 2823
dedbcade
DM		 2824 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2825 * before a PUSHEVAL, which corrupts the stack after a croak */
2826 TAINT_PROPER("eval_sv()");
2827
14dd3ad8 2828 JMPENV_PUSH(ret);
6224f72b
GS		 2829 switch (ret) {
2830 case 0:
14dd3ad8 2831 redo_body:
2ba65d5f
DM		 2832 if (PL_op == (OP*)(&myop)) {
2833 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2834 if (!PL_op)
2835 goto fail; /* failed in compilation */
2836 }
4aca2f62 2837 CALLRUNOPS(aTHX);
312caa8e 2838 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2839 if (!(flags & G_KEEPERR)) {
ab69dbc2 2840 CLEAR_ERRSV();
8433848b 2841 }
4633a7c4 2842 break;
6224f72b 2843 case 1:
f86702cc 2844 STATUS_ALL_FAILURE;
924ba076 2845 /* FALLTHROUGH */
6224f72b 2846 case 2:
4633a7c4 2847 /* my_exit() was called */
03d9f026 2848 SET_CURSTASH(PL_defstash);
4633a7c4 2849 FREETMPS;
14dd3ad8 2850 JMPENV_POP;
f86702cc 2851 my_exit_jump();
a25b5927 2852 assert(0); /* NOTREACHED */
6224f72b 2853 case 3:
3280af22 2854 if (PL_restartop) {
febb3a6d 2855 PL_restartjmpenv = NULL;
533c011a 2856 PL_op = PL_restartop;
3280af22 2857 PL_restartop = 0;
312caa8e 2858 goto redo_body;
4633a7c4 2859 }
4aca2f62 2860 fail:
3280af22 2861 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2862 if ((flags & G_WANT) == G_ARRAY)
4633a7c4
LW		 2863 retval = 0;
2864 else {
2865 retval = 1;
3280af22 2866 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2867 }
312caa8e 2868 break;
4633a7c4
LW		 2869 }
2870
14dd3ad8 2871 JMPENV_POP;
4633a7c4 2872 if (flags & G_DISCARD) {
3280af22 2873 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW		 2874 retval = 0;
2875 FREETMPS;
2876 LEAVE;
2877 }
533c011a 2878 PL_op = oldop;
4633a7c4
LW		 2879 return retval;
2880}
2881
954c1994
GS		 2882/*
2883=for apidoc p||eval_pv
2884
422791e4 2885Tells Perl to C<eval> the given string in scalar context and return an SV* result.
954c1994
GS		 2886
2887=cut
2888*/
2889
137443ea 2890SV*
864dbfa3 2891Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2892{
137443ea 2893 SV* sv = newSVpv(p, 0);
2894
7918f24d
NC		 2895 PERL_ARGS_ASSERT_EVAL_PV;
2896
864dbfa3 2897 eval_sv(sv, G_SCALAR);
137443ea 2898 SvREFCNT_dec(sv);
2899
ed1786ad
DD		 2900 {
2901 dSP;
2902 sv = POPs;
2903 PUTBACK;
2904 }
137443ea 2905
eed484f9
DD		 2906 /* just check empty string or undef? */
2907 if (croak_on_error) {
2908 SV * const errsv = ERRSV;
2909 if(SvTRUE_NN(errsv))
2910 /* replace with croak_sv? */
2911 Perl_croak_nocontext("%s", SvPV_nolen_const(errsv));
2d8e6c8d 2912 }
137443ea 2913
2914 return sv;
2915}
2916
4633a7c4
LW		 2917/* Require a module. */
2918
954c1994 2919/*
ccfc67b7
JH		 2920=head1 Embedding Functions
2921
954c1994
GS		 2922=for apidoc p||require_pv
2923
7d3fb230
BS		 2924Tells Perl to C<require> the file named by the string argument. It is
2925analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2926implemented that way; consider using load_module instead.
954c1994 2927
7d3fb230 2928=cut */
954c1994 2929
4633a7c4 2930void
864dbfa3 2931Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2932{
d3acc0f7 2933 dSP;
97aff369 2934 SV* sv;
7918f24d
NC		 2935
2936 PERL_ARGS_ASSERT_REQUIRE_PV;
2937
e788e7d3 2938 PUSHSTACKi(PERLSI_REQUIRE);
be41e5d9
NC		 2939 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2940 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7 2941 POPSTACK;
79072805
LW		 2942}
2943
76e3520e 2944STATIC void
b6f82619 2945S_usage(pTHX) /* XXX move this out into a module ? */
4633a7c4 2946{
ab821d7f 2947 /* This message really ought to be max 23 lines.
75c72d73 2948 * Removed -h because the user already knows that option. Others? */
fb73857a 2949
1566c39d
NC		 2950 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
2951 minimum of 509 character string literals. */
27da23d5 2952 static const char * const usage_msg[] = {
1566c39d
NC		 2953" -0[octal] specify record separator (\\0, if no argument)\n"
2954" -a autosplit mode with -n or -p (splits $_ into @F)\n"
2955" -C[number/list] enables the listed Unicode features\n"
2956" -c check syntax only (runs BEGIN and CHECK blocks)\n"
2957" -d[:debugger] run program under debugger\n"
2958" -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
2959" -e program one line of program (several -e's allowed, omit programfile)\n"
2960" -E program like -e, but enables all optional features\n"
2961" -f don't do $sitelib/sitecustomize.pl at startup\n"
2962" -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
2963" -i[extension] edit <> files in place (makes backup if extension supplied)\n"
2964" -Idirectory specify @INC/#include directory (several -I's allowed)\n",
2965" -l[octal] enable line ending processing, specifies line terminator\n"
2966" -[mM][-]module execute \"use/no module...\" before executing program\n"
2967" -n assume \"while (<>) { ... }\" loop around program\n"
2968" -p assume loop like -n but print line also, like sed\n"
2969" -s enable rudimentary parsing for switches after programfile\n"
2970" -S look for programfile using PATH environment variable\n",
2971" -t enable tainting warnings\n"
2972" -T enable tainting checks\n"
2973" -u dump core after parsing program\n"
2974" -U allow unsafe operations\n"
2975" -v print version, patchlevel and license\n"
2976" -V[:variable] print configuration summary (or a single Config.pm variable)\n",
60eaec42 2977" -w enable many useful warnings\n"
1566c39d
NC		 2978" -W enable all warnings\n"
2979" -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
2980" -X disable all warnings\n"
2981" \n"
2982"Run 'perldoc perl' for more help with Perl.\n\n",
fb73857a 2983NULL
2984};
27da23d5 2985 const char * const *p = usage_msg;
1566c39d 2986 PerlIO *out = PerlIO_stdout();
fb73857a 2987
1566c39d
NC		 2988 PerlIO_printf(out,
2989 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
b6f82619 2990 PL_origargv[0]);
fb73857a 2991 while (*p)
1566c39d 2992 PerlIO_puts(out, *p++);
b6f82619 2993 my_exit(0);
4633a7c4
LW		 2994}
2995
b4ab917c
DM		 2996/* convert a string of -D options (or digits) into an int.
2997 * sets *s to point to the char after the options */
2998
2999#ifdef DEBUGGING
3000int
e1ec3a88 3001Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 3002{
27da23d5 3003 static const char * const usage_msgd[] = {
651b8f1a
NC		 3004 " Debugging flag values: (see also -d)\n"
3005 " p Tokenizing and parsing (with v, displays parse stack)\n"
3006 " s Stack snapshots (with v, displays all stacks)\n"
3007 " l Context (loop) stack processing\n"
3008 " t Trace execution\n"
3009 " o Method and overloading resolution\n",
3010 " c String/numeric conversions\n"
3011 " P Print profiling info, source file input state\n"
3012 " m Memory and SV allocation\n"
3013 " f Format processing\n"
3014 " r Regular expression parsing and execution\n"
3015 " x Syntax tree dump\n",
3016 " u Tainting checks\n"
3017 " H Hash dump -- usurps values()\n"
3018 " X Scratchpad allocation\n"
3019 " D Cleaning up\n"
56967202 3020 " S Op slab allocation\n"
651b8f1a
NC		 3021 " T Tokenising\n"
3022 " R Include reference counts of dumped variables (eg when using -Ds)\n",
3023 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
3024 " v Verbose: use in conjunction with other flags\n"
3025 " C Copy On Write\n"
3026 " A Consistency checks on internal structures\n"
3027 " q quiet - currently only suppresses the 'EXECUTING' message\n"
3028 " M trace smart match resolution\n"
3029 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
69014004 3030 " L trace some locale setting information--for Perl core development\n",
e6e64d9b
JC		 3031 NULL
3032 };
b4ab917c 3033 int i = 0;
7918f24d
NC		 3034
3035 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
3036
b4ab917c
DM		 3037 if (isALPHA(**s)) {
3038 /* if adding extra options, remember to update DEBUG_MASK */
69014004 3039 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMBL";
b4ab917c 3040
0eb30aeb 3041 for (; isWORDCHAR(**s); (*s)++) {
c4420975 3042 const char * const d = strchr(debopts,**s);
b4ab917c
DM		 3043 if (d)
3044 i |= 1 << (d - debopts);
3045 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC		 3046 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3047 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM		 3048 }
3049 }
e6e64d9b 3050 else if (isDIGIT(**s)) {
96e440d2
JH		 3051 const char* e;
3052 i = grok_atou(*s, &e);
3053 if (e)
3054 *s = e;
0eb30aeb 3055 for (; isWORDCHAR(**s); (*s)++) ;
b4ab917c 3056 }
ddcf8bc1 3057 else if (givehelp) {
06e869a4 3058 const char *const *p = usage_msgd;
651b8f1a 3059 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
e6e64d9b 3060 }
b4ab917c
DM		 3061# ifdef EBCDIC
3062 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
3063 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3064 "-Dp not implemented on this platform\n");
3065# endif
3066 return i;
3067}
3068#endif
3069
79072805
LW		 3070/* This routine handles any switches that can be given during run */
3071
c7030b81
NC		 3072const char *
3073Perl_moreswitches(pTHX_ const char *s)
79072805 3074{
27da23d5 3075 dVAR;
84c133a0 3076 UV rschar;
0544e6df 3077 const char option = *s; /* used to remember option in -m/-M code */
79072805 3078
7918f24d
NC		 3079 PERL_ARGS_ASSERT_MORESWITCHES;
3080
79072805
LW		 3081 switch (*s) {
3082 case '0':
a863c7d1 3083 {
f2095865 3084 I32 flags = 0;
a3b680e6 3085 STRLEN numlen;
f2095865
JH		 3086
3087 SvREFCNT_dec(PL_rs);
3088 if (s[1] == 'x' && s[2]) {
a3b680e6 3089 const char *e = s+=2;
f2095865
JH		 3090 U8 *tmps;
3091
a3b680e6
AL		 3092 while (*e)
3093 e++;
f2095865
JH		 3094 numlen = e - s;
3095 flags = PERL_SCAN_SILENT_ILLDIGIT;
3096 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3097 if (s + numlen < e) {
3098 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3099 numlen = 0;
3100 s--;
3101 }
396482e1 3102 PL_rs = newSVpvs("");
c5661c80 3103 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH		 3104 tmps = (U8*)SvPVX(PL_rs);
3105 uvchr_to_utf8(tmps, rschar);
3106 SvCUR_set(PL_rs, UNISKIP(rschar));
3107 SvUTF8_on(PL_rs);
3108 }
3109 else {
3110 numlen = 4;
3111 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3112 if (rschar & ~((U8)~0))
3113 PL_rs = &PL_sv_undef;
3114 else if (!rschar && numlen >= 2)
396482e1 3115 PL_rs = newSVpvs("");
f2095865
JH		 3116 else {
3117 char ch = (char)rschar;
3118 PL_rs = newSVpvn(&ch, 1);
3119 }
3120 }
64ace3f8 3121 sv_setsv(get_sv("/", GV_ADD), PL_rs);
f2095865 3122 return s + numlen;
a863c7d1 3123 }
46487f74 3124 case 'C':
a05d7ebb 3125 s++;
dd374669 3126 PL_unicode = parse_unicode_opts( (const char **)&s );
5a22a2bb
NC		 3127 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3128 PL_utf8cache = -1;
46487f74 3129 return s;
2304df62 3130 case 'F':
5fc691f1 3131 PL_minus_a = TRUE;
3280af22 3132 PL_minus_F = TRUE;
24ffa309 3133 PL_minus_n = TRUE;
ebce5377
RGS		 3134 PL_splitstr = ++s;
3135 while (*s && !isSPACE(*s)) ++s;
e49e380e 3136 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
2304df62 3137 return s;
79072805 3138 case 'a':
3280af22 3139 PL_minus_a = TRUE;
24ffa309 3140 PL_minus_n = TRUE;
79072805
LW		 3141 s++;
3142 return s;
3143 case 'c':
3280af22 3144 PL_minus_c = TRUE;
79072805
LW		 3145 s++;
3146 return s;
3147 case 'd':
f20b2998 3148 forbid_setid('d', FALSE);
4633a7c4 3149 s++;
2cbb2ee1
RGS		 3150
3151 /* -dt indicates to the debugger that threads will be used */
0eb30aeb 3152 if (*s == 't' && !isWORDCHAR(s[1])) {
2cbb2ee1
RGS		 3153 ++s;
3154 my_setenv("PERL5DB_THREADED", "1");
3155 }
3156
70c94a19
RR		 3157 /* The following permits -d:Mod to accepts arguments following an =
3158 in the fashion that -MSome::Mod does. */
3159 if (*s == ':' || *s == '=') {
b19934fb
NC		 3160 const char *start;
3161 const char *end;
3162 SV *sv;
3163
3164 if (*++s == '-') {
3165 ++s;
3166 sv = newSVpvs("no Devel::");
3167 } else {
3168 sv = newSVpvs("use Devel::");
3169 }
3170
3171 start = s;
3172 end = s + strlen(s);
f85893a1 3173
b19934fb 3174 /* We now allow -d:Module=Foo,Bar and -d:-Module */
0eb30aeb 3175 while(isWORDCHAR(*s) || *s==':') ++s;
70c94a19 3176 if (*s != '=')
f85893a1 3177 sv_catpvn(sv, start, end - start);
70c94a19
RR		 3178 else {
3179 sv_catpvn(sv, start, s-start);
95a2b409
RGS		 3180 /* Don't use NUL as q// delimiter here, this string goes in the
3181 * environment. */
3182 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
70c94a19 3183 }
f85893a1 3184 s = end;
184f32ec 3185 my_setenv("PERL5DB", SvPV_nolen_const(sv));
c4db126b 3186 SvREFCNT_dec(sv);
4633a7c4 3187 }
ed094faf 3188 if (!PL_perldb) {
3280af22 3189 PL_perldb = PERLDB_ALL;
a0d0e21e 3190 init_debugger();
ed094faf 3191 }
79072805
LW		 3192 return s;
3193 case 'D':
0453d815 3194 {
79072805 3195#ifdef DEBUGGING
f20b2998 3196 forbid_setid('D', FALSE);
b4ab917c 3197 s++;
dd374669 3198 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3199#else /* !DEBUGGING */
0453d815 3200 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3201 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3202 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
0eb30aeb 3203 for (s++; isWORDCHAR(*s); s++) ;
79072805 3204#endif
79072805 3205 return s;
0453d815 3206 }
4633a7c4 3207 case 'h':
b6f82619 3208 usage();
79072805 3209 case 'i':
43c5f42d 3210 Safefree(PL_inplace);
c030f24b
GH		 3211#if defined(__CYGWIN__) /* do backup extension automagically */
3212 if (*(s+1) == '\0') {
c86a4f2e 3213 PL_inplace = savepvs(".bak");
c030f24b
GH		 3214 return s+1;
3215 }
3216#endif /* __CYGWIN__ */
5ef5d758 3217 {
d4c19fe8 3218 const char * const start = ++s;
5ef5d758
NC		 3219 while (*s && !isSPACE(*s))
3220 ++s;
3221
3222 PL_inplace = savepvn(start, s - start);
3223 }
7b8d334a 3224 if (*s) {
5ef5d758 3225 ++s;
7b8d334a 3226 if (*s == '-') /* Additional switches on #! line. */
5ef5d758 3227 s++;
7b8d334a 3228 }
fb73857a 3229 return s;
4e49a025 3230 case 'I': /* -I handled both here and in parse_body() */
f20b2998 3231 forbid_setid('I', FALSE);
fb73857a 3232 ++s;
3233 while (*s && isSPACE(*s))
3234 ++s;
3235 if (*s) {
c7030b81 3236 const char *e, *p;
0df16ed7
GS		 3237 p = s;
3238 /* ignore trailing spaces (possibly followed by other switches) */
3239 do {
3240 for (e = p; *e && !isSPACE(*e); e++) ;
3241 p = e;
3242 while (isSPACE(*p))
3243 p++;
3244 } while (*p && *p != '-');
55b4bc1c 3245 incpush(s, e-s,
e28f3139 3246 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
0df16ed7
GS		 3247 s = p;
3248 if (*s == '-')
3249 s++;
79072805
LW		 3250 }
3251 else
a67e862a 3252 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3253 return s;
79072805 3254 case 'l':
3280af22 3255 PL_minus_l = TRUE;
79072805 3256 s++;
7889fe52
NIS		 3257 if (PL_ors_sv) {
3258 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3259 PL_ors_sv = NULL;
7889fe52 3260 }
79072805 3261 if (isDIGIT(*s)) {
53305cf1 3262 I32 flags = 0;
a3b680e6 3263 STRLEN numlen;
396482e1 3264 PL_ors_sv = newSVpvs("\n");
53305cf1
NC		 3265 numlen = 3 + (*s == '0');
3266 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW		 3267 s += numlen;
3268 }
3269 else {
8bfdd7d9 3270 if (RsPARA(PL_rs)) {
396482e1 3271 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS		 3272 }
3273 else {
8bfdd7d9 3274 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3275 }
79072805
LW		 3276 }
3277 return s;
1a30305b 3278 case 'M':
f20b2998 3279 forbid_setid('M', FALSE); /* XXX ? */
924ba076 3280 /* FALLTHROUGH */
1a30305b 3281 case 'm':
f20b2998 3282 forbid_setid('m', FALSE); /* XXX ? */
1a30305b 3283 if (*++s) {
c7030b81 3284 const char *start;
b64cb68c 3285 const char *end;
11343788 3286 SV *sv;
e1ec3a88 3287 const char *use = "use ";
0544e6df 3288 bool colon = FALSE;
a5f75d66 3289 /* -M-foo == 'no foo' */
d0043bd1
NC		 3290 /* Leading space on " no " is deliberate, to make both
3291 possibilities the same length. */
3292 if (*s == '-') { use = " no "; ++s; }
3293 sv = newSVpvn(use,4);
a5f75d66 3294 start = s;
1a30305b 3295 /* We allow -M'Module qw(Foo Bar)' */
0eb30aeb 3296 while(isWORDCHAR(*s) || *s==':') {
0544e6df
RB		 3297 if( *s++ == ':' ) {
3298 if( *s == ':' )
3299 s++;
3300 else
3301 colon = TRUE;
3302 }
3303 }
3304 if (s == start)
3305 Perl_croak(aTHX_ "Module name required with -%c option",
3306 option);
3307 if (colon)
3308 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3309 "contains single ':'",
63da6837 3310 (int)(s - start), start, option);
b64cb68c 3311 end = s + strlen(s);
c07a80fd 3312 if (*s != '=') {
b64cb68c 3313 sv_catpvn(sv, start, end - start);
0544e6df 3314 if (option == 'm') {
c07a80fd 3315 if (*s != '\0')
cea2e8a9 3316 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3317 sv_catpvs( sv, " ()");
c07a80fd 3318 }
3319 } else {
11343788 3320 sv_catpvn(sv, start, s-start);
b64cb68c
NC		 3321 /* Use NUL as q''-delimiter. */
3322 sv_catpvs(sv, " split(/,/,q\0");
3323 ++s;
3324 sv_catpvn(sv, s, end - s);
396482e1 3325 sv_catpvs(sv, "\0)");
c07a80fd 3326 }
b64cb68c 3327 s = end;
29a861e7 3328 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
1a30305b 3329 }
3330 else
0544e6df 3331 Perl_croak(aTHX_ "Missing argument to -%c", option);
1a30305b 3332 return s;
79072805 3333 case 'n':
3280af22 3334 PL_minus_n = TRUE;
79072805
LW		 3335 s++;
3336 return s;
3337 case 'p':
3280af22 3338 PL_minus_p = TRUE;
79072805
LW		 3339 s++;
3340 return s;
3341 case 's':
f20b2998 3342 forbid_setid('s', FALSE);
3280af22 3343 PL_doswitches = TRUE;
79072805
LW		 3344 s++;
3345 return s;
6537fe72 3346 case 't':
27a6968b 3347 case 'T':
dc6d7f5c 3348#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 3349 /* silently ignore */
dc6d7f5c 3350#elif defined(NO_TAINT_SUPPORT)
3231f579 3351 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
S		 3352 "Cowardly refusing to run with -t or -T flags");
3353#else
3354 if (!TAINTING_get)
27a6968b 3355 TOO_LATE_FOR(*s);
284167a5 3356#endif
6537fe72 3357 s++;
463ee0b2 3358 return s;
79072805 3359 case 'u':
3280af22 3360 PL_do_undump = TRUE;
79072805
LW		 3361 s++;
3362 return s;
3363 case 'U':
3280af22 3364 PL_unsafe = TRUE;
79072805
LW		 3365 s++;
3366 return s;
3367 case 'v':
c4bc78d9
NC		 3368 minus_v();
3369 case 'w':
3370 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
3371 PL_dowarn |= G_WARN_ON;
3372 }
3373 s++;
3374 return s;
3375 case 'W':
3376 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
3377 if (!specialWARN(PL_compiling.cop_warnings))
3378 PerlMemShared_free(PL_compiling.cop_warnings);
3379 PL_compiling.cop_warnings = pWARN_ALL ;
3380 s++;
3381 return s;
3382 case 'X':
3383 PL_dowarn = G_WARN_ALL_OFF;
3384 if (!specialWARN(PL_compiling.cop_warnings))
3385 PerlMemShared_free(PL_compiling.cop_warnings);
3386 PL_compiling.cop_warnings = pWARN_NONE ;
3387 s++;
3388 return s;
3389 case '*':
3390 case ' ':
3391 while( *s == ' ' )
3392 ++s;
3393 if (s[0] == '-') /* Additional switches on #! line. */
3394 return s+1;
3395 break;
3396 case '-':
3397 case 0:
3398#if defined(WIN32) || !defined(PERL_STRICT_CR)
3399 case '\r':
3400#endif
3401 case '\n':
3402 case '\t':
3403 break;
3404#ifdef ALTERNATE_SHEBANG
3405 case 'S': /* OS/2 needs -S on "extproc" line. */
3406 break;
3407#endif
4bb78d63
CB		 3408 case 'e': case 'f': case 'x': case 'E':
3409#ifndef ALTERNATE_SHEBANG
3410 case 'S':
3411#endif
3412 case 'V':
c4bc78d9 3413 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
b7e077d0
FC		 3414 default:
3415 Perl_croak(aTHX_
3416 "Unrecognized switch: -%.1s (-h will show valid options)",s
3417 );
c4bc78d9
NC		 3418 }
3419 return NULL;
3420}
3421
3422
3423STATIC void
3424S_minus_v(pTHX)
3425{
fc3381af 3426 PerlIO * PIO_stdout;
46807d8e 3427 {
709aee94
DD		 3428 const char * const level_str = "v" PERL_VERSION_STRING;
3429 const STRLEN level_len = sizeof("v" PERL_VERSION_STRING)-1;
46807d8e 3430#ifdef PERL_PATCHNUM
709aee94 3431 SV* level;
23d483e2 3432# ifdef PERL_GIT_UNCOMMITTED_CHANGES
709aee94 3433 static const char num [] = PERL_PATCHNUM "*";
23d483e2 3434# else
709aee94 3435 static const char num [] = PERL_PATCHNUM;
23d483e2 3436# endif
fc3381af 3437 {
709aee94
DD		 3438 const STRLEN num_len = sizeof(num)-1;
3439 /* A very advanced compiler would fold away the strnEQ
3440 and this whole conditional, but most (all?) won't do it.
3441 SV level could also be replaced by with preprocessor
3442 catenation.
3443 */
3444 if (num_len >= level_len && strnEQ(num,level_str,level_len)) {
3445 /* per 46807d8e80, PERL_PATCHNUM is outside of the control
3446 of the interp so it might contain format characters
3447 */
3448 level = newSVpvn(num, num_len);
fc3381af 3449 } else {
709aee94 3450 level = Perl_newSVpvf_nocontext("%s (%s)", level_str, num);
fc3381af 3451 }
46807d8e 3452 }
709aee94
DD		 3453#else
3454 SV* level = newSVpvn(level_str, level_len);
3455#endif /* #ifdef PERL_PATCHNUM */
fc3381af
DD		 3456 PIO_stdout = PerlIO_stdout();
3457 PerlIO_printf(PIO_stdout,
ded326e4
DG		 3458 "\nThis is perl " STRINGIFY(PERL_REVISION)
3459 ", version " STRINGIFY(PERL_VERSION)
3460 ", subversion " STRINGIFY(PERL_SUBVERSION)
c1f6cd39 3461 " (%"SVf") built for " ARCHNAME, SVfARG(level)
ded326e4 3462 );
709aee94 3463 SvREFCNT_dec_NN(level);
46807d8e 3464 }
fb73857a 3465#if defined(LOCAL_PATCH_COUNT)
3466 if (LOCAL_PATCH_COUNT > 0)
fc3381af 3467 PerlIO_printf(PIO_stdout,
b0e47665
GS		 3468 "\n(with %d registered patch%s, "
3469 "see perl -V for more detail)",
bb7a0f54 3470 LOCAL_PATCH_COUNT,
b0e47665 3471 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 3472#endif
1a30305b 3473
fc3381af 3474 PerlIO_printf(PIO_stdout,
fb435042 3475 "\n\nCopyright 1987-2014, Larry Wall\n");
79072805 3476#ifdef MSDOS
fc3381af 3477 PerlIO_printf(PIO_stdout,
b0e47665 3478 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff 3479#endif
3480#ifdef DJGPP
fc3381af 3481 PerlIO_printf(PIO_stdout,
b0e47665
GS		 3482 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3483 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 3484#endif
79072805 3485#ifdef OS2
fc3381af 3486 PerlIO_printf(PIO_stdout,
b0e47665 3487 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
be3c0a43 3488 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
79072805 3489#endif
9d116dd7 3490#ifdef OEMVS
fc3381af 3491 PerlIO_printf(PIO_stdout,
b0e47665 3492 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 3493#endif
495c5fdc 3494#ifdef __VOS__
fc3381af 3495 PerlIO_printf(PIO_stdout,
c0fcb8c5 3496 "Stratus OpenVOS port by Paul.Green@stratus.com, 1997-2013\n");
495c5fdc 3497#endif
a1a0e61e 3498#ifdef POSIX_BC
fc3381af 3499 PerlIO_printf(PIO_stdout,
b0e47665 3500 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 3501#endif
e1caacb4 3502#ifdef UNDER_CE
fc3381af
DD		 3503 PerlIO_printf(PIO_stdout,
3504 "WINCE port by Rainer Keuchel, 2001-2002\n"
3505 "Built on " __DATE__ " " __TIME__ "\n\n");
e1caacb4
JH		 3506 wce_hitreturn();
3507#endif
a0fd4948 3508#ifdef __SYMBIAN32__
fc3381af 3509 PerlIO_printf(PIO_stdout,
27da23d5
JH		 3510 "Symbian port by Nokia, 2004-2005\n");
3511#endif
baed7233
DL		 3512#ifdef BINARY_BUILD_NOTICE
3513 BINARY_BUILD_NOTICE;
3514#endif
fc3381af 3515 PerlIO_printf(PIO_stdout,
b0e47665 3516 "\n\
79072805 3517Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 3518GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687 3519Complete documentation for Perl, including FAQ lists, should be found on\n\
a0288114 3520this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
c9e30dd8 3521Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
7ca617d0 3522 my_exit(0);
79072805
LW		 3523}
3524
3525/* compliments of Tom Christiansen */
3526
3527/* unexec() can be found in the Gnu emacs distribution */
ee580363 3528/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805 3529
25bbd826
CB		 3530#ifdef VMS
3531#include <lib$routines.h>
3532#endif
3533
79072805 3534void
864dbfa3 3535Perl_my_unexec(pTHX)
79072805
LW		 3536{
3537#ifdef UNEXEC
b37c2d43
AL		 3538 SV * prog = newSVpv(BIN_EXP, 0);
3539 SV * file = newSVpv(PL_origfilename, 0);
ee580363 3540 int status = 1;
79072805
LW		 3541 extern int etext;
3542
396482e1 3543 sv_catpvs(prog, "/perl");
396482e1 3544 sv_catpvs(file, ".perldump");
79072805 3545
ee580363
GS		 3546 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3547 /* unexec prints msg to stderr in case of failure */
6ad3d225 3548 PerlProc_exit(status);
79072805 3549#else
ddeaf645 3550 PERL_UNUSED_CONTEXT;
a5f75d66 3551# ifdef VMS
a5f75d66 3552 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
84d78eb7 3553# elif defined(WIN32) || defined(__CYGWIN__)
ddeaf645 3554 Perl_croak_nocontext("dump is not supported");
aa689395 3555# else
79072805 3556 ABORT(); /* for use with undump */
aa689395 3557# endif
a5f75d66 3558#endif
79072805
LW		 3559}
3560
cb68f92d
GS		 3561/* initialize curinterp */
3562STATIC void
cea2e8a9 3563S_init_interp(pTHX)
cb68f92d 3564{
acfe0abc 3565#ifdef MULTIPLICITY
115ff745
NC		 3566# define PERLVAR(prefix,var,type)
3567# define PERLVARA(prefix,var,n,type)
acfe0abc 3568# if defined(PERL_IMPLICIT_CONTEXT)
115ff745
NC		 3569# define PERLVARI(prefix,var,type,init) aTHX->prefix##var = init;
3570# define PERLVARIC(prefix,var,type,init) aTHX->prefix##var = init;
3967c732 3571# else
115ff745
NC		 3572# define PERLVARI(prefix,var,type,init) PERL_GET_INTERP->var = init;
3573# define PERLVARIC(prefix,var,type,init) PERL_GET_INTERP->var = init;
066ef5b5 3574# endif
acfe0abc 3575# include "intrpvar.h"
acfe0abc
GS		 3576# undef PERLVAR
3577# undef PERLVARA
3578# undef PERLVARI
3579# undef PERLVARIC
3580#else
115ff745
NC		 3581# define PERLVAR(prefix,var,type)
3582# define PERLVARA(prefix,var,n,type)
3583# define PERLVARI(prefix,var,type,init) PL_##var = init;
3584# define PERLVARIC(prefix,var,type,init) PL_##var = init;
acfe0abc 3585# include "intrpvar.h"
acfe0abc
GS		 3586# undef PERLVAR
3587# undef PERLVARA
3588# undef PERLVARI
3589# undef PERLVARIC
cb68f92d
GS		 3590#endif
3591
cb68f92d
GS		 3592}
3593
76e3520e 3594STATIC void
cea2e8a9 3595S_init_main_stash(pTHX)
79072805 3596{
463ee0b2 3597 GV *gv;
6e72f9df 3598
03d9f026 3599 PL_curstash = PL_defstash = (HV *)SvREFCNT_inc_simple_NN(newHV());
23579a14
NC		 3600 /* We know that the string "main" will be in the global shared string
3601 table, so it's a small saving to use it rather than allocate another
3602 8 bytes. */
18916d0d 3603 PL_curstname = newSVpvs_share("main");
fafc274c 3604 gv = gv_fetchpvs("main::", GV_ADD|GV_NOTQUAL, SVt_PVHV);
23579a14
NC		 3605 /* If we hadn't caused another reference to "main" to be in the shared
3606 string table above, then it would be worth reordering these two,
3607 because otherwise all we do is delete "main" from it as a consequence
3608 of the SvREFCNT_dec, only to add it again with hv_name_set */
adbc6bb1 3609 SvREFCNT_dec(GvHV(gv));
23579a14 3610 hv_name_set(PL_defstash, "main", 4, 0);
85fbaab2 3611 GvHV(gv) = MUTABLE_HV(SvREFCNT_inc_simple(PL_defstash));
463ee0b2 3612 SvREADONLY_on(gv);
fafc274c
NC		 3613 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpvs("INC", GV_ADD|GV_NOTQUAL,
3614 SVt_PVAV)));
5a5094bd 3615 SvREFCNT_inc_simple_void(PL_incgv); /* Don't allow it to be freed */
3280af22 3616 GvMULTI_on(PL_incgv);
fafc274c 3617 PL_hintgv = gv_fetchpvs("\010", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^H */
4639d557 3618 SvREFCNT_inc_simple_void(PL_hintgv);
3280af22 3619 GvMULTI_on(PL_hintgv);
fafc274c 3620 PL_defgv = gv_fetchpvs("_", GV_ADD|GV_NOTQUAL, SVt_PVAV);
5a5094bd 3621 SvREFCNT_inc_simple_void(PL_defgv);
d456e3f4 3622 PL_errgv = gv_fetchpvs("@", GV_ADD|GV_NOTQUAL, SVt_PV);
5a5094bd 3623 SvREFCNT_inc_simple_void(PL_errgv);
3280af22 3624 GvMULTI_on(PL_errgv);
fafc274c 3625 PL_replgv = gv_fetchpvs("\022", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^R */
475b1e90 3626 SvREFCNT_inc_simple_void(PL_replgv);
3280af22 3627 GvMULTI_on(PL_replgv);
cea2e8a9 3628 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
c69033f2
NC		 3629#ifdef PERL_DONT_CREATE_GVSV
3630 gv_SVadd(PL_errgv);
3631#endif
38a03e6e 3632 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
ab69dbc2 3633 CLEAR_ERRSV();
03d9f026 3634 SET_CURSTASH(PL_defstash);
11faa288 3635 CopSTASH_set(&PL_compiling, PL_defstash);
5c1737d1
NC		 3636 PL_debstash = GvHV(gv_fetchpvs("DB::", GV_ADDMULTI, SVt_PVHV));
3637 PL_globalstash = GvHV(gv_fetchpvs("CORE::GLOBAL::", GV_ADDMULTI,
3638 SVt_PVHV));
4633a7c4 3639 /* We must init $/ before switches are processed. */
64ace3f8 3640 sv_setpvs(get_sv("/", GV_ADD), "\n");
79072805
LW		 3641}
3642
8d113837
NC		 3643STATIC PerlIO *
3644S_open_script(pTHX_ const char *scriptname, bool dosearch, bool *suidscript)
79072805 3645{
fdf5d70d 3646 int fdscript = -1;
8d113837 3647 PerlIO *rsfp = NULL;
1dfef69b 3648 Stat_t tmpstatbuf;
375ed12a 3649 int fd;
1b24ed4b 3650
7918f24d
NC		 3651 PERL_ARGS_ASSERT_OPEN_SCRIPT;
3652
3280af22 3653 if (PL_e_script) {
8afc33d6 3654 PL_origfilename = savepvs("-e");
96436eeb 3655 }
6c4ab083
GS		 3656 else {
3657 /* if find_script() returns, it returns a malloc()-ed value */
dd374669 3658 scriptname = PL_origfilename = find_script(scriptname, dosearch, NULL, 1);
6c4ab083
GS		 3659
3660 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
e1ec3a88 3661 const char *s = scriptname + 8;
96e440d2
JH		 3662 const char* e;
3663 fdscript = grok_atou(s, &e);
3664 s = e;
6c4ab083 3665 if (*s) {
ae3f3efd
PS		 3666 /* PSz 18 Feb 04
3667 * Tell apart "normal" usage of fdscript, e.g.
3668 * with bash on FreeBSD:
3669 * perl <( echo '#!perl -DA'; echo 'print "$0\n"')
3670 * from usage in suidperl.
3671 * Does any "normal" usage leave garbage after the number???
3672 * Is it a mistake to use a similar /dev/fd/ construct for
3673 * suidperl?
3674 */
f20b2998 3675 *suidscript = TRUE;
ae3f3efd
PS		 3676 /* PSz 20 Feb 04
3677 * Be supersafe and do some sanity-checks.
3678 * Still, can we be sure we got the right thing?
3679 */
3680 if (*s != '/') {
3681 Perl_croak(aTHX_ "Wrong syntax (suid) fd script name \"%s\"\n", s);
3682 }
3683 if (! *(s+1)) {
3684 Perl_croak(aTHX_ "Missing (suid) fd script name\n");
3685 }
6c4ab083 3686 scriptname = savepv(s + 1);
3280af22 3687 Safefree(PL_origfilename);
dd374669 3688 PL_origfilename = (char *)scriptname;
6c4ab083
GS		 3689 }
3690 }
3691 }
3692
05ec9bb3 3693 CopFILE_free(PL_curcop);
57843af0 3694 CopFILE_set(PL_curcop, PL_origfilename);
770526c1 3695 if (*PL_origfilename == '-' && PL_origfilename[1] == '\0')
dd374669 3696 scriptname = (char *)"";
fdf5d70d 3697 if (fdscript >= 0) {
8d113837 3698 rsfp = PerlIO_fdopen(fdscript,PERL_SCRIPT_MODE);
96436eeb 3699 }
79072805 3700 else if (!*scriptname) {
cdd8118e 3701 forbid_setid(0, *suidscript);
c0b3891a 3702 return NULL;
79072805 3703 }
96436eeb 3704 else {
9c12f1e5
RGS		 3705#ifdef FAKE_BIT_BUCKET
3706 /* This hack allows one not to have /dev/null (or BIT_BUCKET as it
3707 * is called) and still have the "-e" work. (Believe it or not,
3708 * a /dev/null is required for the "-e" to work because source
3709 * filter magic is used to implement it. ) This is *not* a general
3710 * replacement for a /dev/null. What we do here is create a temp
3711 * file (an empty file), open up that as the script, and then
3712 * immediately close and unlink it. Close enough for jazz. */
3713#define FAKE_BIT_BUCKET_PREFIX "/tmp/perlnull-"
3714#define FAKE_BIT_BUCKET_SUFFIX "XXXXXXXX"
3715#define FAKE_BIT_BUCKET_TEMPLATE FAKE_BIT_BUCKET_PREFIX FAKE_BIT_BUCKET_SUFFIX
3716 char tmpname[sizeof(FAKE_BIT_BUCKET_TEMPLATE)] = {
3717 FAKE_BIT_BUCKET_TEMPLATE
3718 };
3719 const char * const err = "Failed to create a fake bit bucket";
3720 if (strEQ(scriptname, BIT_BUCKET)) {
3721#ifdef HAS_MKSTEMP /* Hopefully mkstemp() is safe here. */
60f7fc1e 3722 int old_umask = umask(0600);
9c12f1e5 3723 int tmpfd = mkstemp(tmpname);
60f7fc1e 3724 umask(old_umask);
9c12f1e5
RGS		 3725 if (tmpfd > -1) {
3726 scriptname = tmpname;
3727 close(tmpfd);
3728 } else
3729 Perl_croak(aTHX_ err);
3730#else
3731# ifdef HAS_MKTEMP
3732 scriptname = mktemp(tmpname);
3733 if (!scriptname)
3734 Perl_croak(aTHX_ err);
3735# endif
3736#endif
3737 }
3738#endif
8d113837 3739 rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
9c12f1e5
RGS		 3740#ifdef FAKE_BIT_BUCKET
3741 if (memEQ(scriptname, FAKE_BIT_BUCKET_PREFIX,
3742 sizeof(FAKE_BIT_BUCKET_PREFIX) - 1)
3743 && strlen(scriptname) == sizeof(tmpname) - 1) {
3744 unlink(scriptname);
3745 }
3746 scriptname = BIT_BUCKET;
3747#endif
96436eeb 3748 }
8d113837 3749 if (!rsfp) {
447218f8 3750 /* PSz 16 Sep 03 Keep neat error message */
b1681ed3
RGS		 3751 if (PL_e_script)
3752 Perl_croak(aTHX_ "Can't open "BIT_BUCKET": %s\n", Strerror(errno));
3753 else
3754 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3755 CopFILE(PL_curcop), Strerror(errno));
13281fa4 3756 }
375ed12a 3757 fd = PerlIO_fileno(rsfp);
a7c81930 3758#if defined(HAS_FCNTL) && defined(F_SETFD)
375ed12a
JH		 3759 if (fd >= 0) {
3760 /* ensure close-on-exec */
3761 if (fcntl(fd, F_SETFD, 1) < 0) {
3762 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3763 CopFILE(PL_curcop), Strerror(errno));
3764 }
3765 }
a7c81930 3766#endif
1dfef69b 3767
375ed12a
JH		 3768 if (fd < 0 ||
3769 (PerlLIO_fstat(fd, &tmpstatbuf) >= 0
3770 && S_ISDIR(tmpstatbuf.st_mode)))
1dfef69b
RS		 3771 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3772 CopFILE(PL_curcop),
0c0d42ff 3773 Strerror(EISDIR));
1dfef69b 3774
8d113837 3775 return rsfp;
79072805 3776}
8d063cd8 3777
7b89560d
JH		 3778/* Mention
3779 * I_SYSSTATVFS HAS_FSTATVFS
3780 * I_SYSMOUNT
c890dc6c 3781 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
7b89560d
JH		 3782 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
3783 * here so that metaconfig picks them up. */
3784
104d25b7 3785
cc69b689 3786#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
ec2019ad 3787/* Don't even need this function. */
cc69b689 3788#else
ec2019ad
NC		 3789STATIC void
3790S_validate_suid(pTHX_ PerlIO *rsfp)
3791{
dfff4baf
BF		 3792 const Uid_t my_uid = PerlProc_getuid();
3793 const Uid_t my_euid = PerlProc_geteuid();
3794 const Gid_t my_gid = PerlProc_getgid();
3795 const Gid_t my_egid = PerlProc_getegid();
985213f2 3796
ac076a5c
NC		 3797 PERL_ARGS_ASSERT_VALIDATE_SUID;
3798
985213f2 3799 if (my_euid != my_uid || my_egid != my_gid) { /* (suidperl doesn't exist, in fact) */
a2e578da 3800 dVAR;
375ed12a
JH		 3801 int fd = PerlIO_fileno(rsfp);
3802 if (fd < 0) {
3803 Perl_croak(aTHX_ "Illegal suidscript");
3804 } else {
3805 if (PerlLIO_fstat(fd, &PL_statbuf) < 0) { /* may be either wrapped or real suid */
3806 Perl_croak(aTHX_ "Illegal suidscript");
3807 }
3808 }
3809 if ((my_euid != my_uid && my_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3810 ||
3811 (my_egid != my_gid && my_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3812 )
b28d0864 3813 if (!PL_do_undump)
cea2e8a9 3814 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
a687059c 3815FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
a687059c 3816 /* not set-id, must be wrapped */
a687059c 3817 }
79072805 3818}
cc69b689 3819#endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
13281fa4 3820
76e3520e 3821STATIC void
2f9285f8 3822S_find_beginning(pTHX_ SV* linestr_sv, PerlIO *rsfp)
79072805 3823{
c7030b81 3824 const char *s;
eb578fdb 3825 const char *s2;
33b78306 3826
7918f24d
NC		 3827 PERL_ARGS_ASSERT_FIND_BEGINNING;
3828
33b78306
LW		 3829 /* skip forward in input to the real script? */
3830
737c24fc 3831 do {
2f9285f8 3832 if ((s = sv_gets(linestr_sv, rsfp, 0)) == NULL)
cea2e8a9 3833 Perl_croak(aTHX_ "No Perl script found in input\n");
4f0c37ba 3834 s2 = s;
737c24fc
Z		 3835 } while (!(*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))));
3836 PerlIO_ungetc(rsfp, '\n'); /* to keep line count right */
3837 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3838 s2 = s;
3839 while (*s == ' ' || *s == '\t') s++;
3840 if (*s++ == '-') {
3841 while (isDIGIT(s2[-1]) || s2[-1] == '-' || s2[-1] == '.'
3842 || s2[-1] == '_') s2--;
3843 if (strnEQ(s2-4,"perl",4))
3844 while ((s = moreswitches(s)))
3845 ;
83025b21
LW		 3846 }
3847}
3848
afe37c7d 3849
76e3520e 3850STATIC void
cea2e8a9 3851S_init_ids(pTHX)
352d5a3a 3852{
284167a5
S		 3853 /* no need to do anything here any more if we don't
3854 * do tainting. */
dc6d7f5c 3855#ifndef NO_TAINT_SUPPORT
dfff4baf
BF		 3856 const Uid_t my_uid = PerlProc_getuid();
3857 const Uid_t my_euid = PerlProc_geteuid();
3858 const Gid_t my_gid = PerlProc_getgid();
3859 const Gid_t my_egid = PerlProc_getegid();
985213f2 3860
20b7effb
JH		 3861 PERL_UNUSED_CONTEXT;
3862
22f7c9c9 3863 /* Should not happen: */
985213f2 3864 CHECK_MALLOC_TAINT(my_uid && (my_euid != my_uid || my_egid != my_gid));
284167a5
S		 3865 TAINTING_set( TAINTING_get | (my_uid && (my_euid != my_uid || my_egid != my_gid)) );
3866#endif
ae3f3efd
PS		 3867 /* BUG */
3868 /* PSz 27 Feb 04
3869 * Should go by suidscript, not uid!=euid: why disallow
3870 * system("ls") in scripts run from setuid things?
3871 * Or, is this run before we check arguments and set suidscript?
3872 * What about SETUID_SCRIPTS_ARE_SECURE_NOW: could we use fdscript then?
3873 * (We never have suidscript, can we be sure to have fdscript?)
3874 * Or must then go by UID checks? See comments in forbid_setid also.
3875 */
748a9306 3876}
79072805 3877
a0643315
JH		 3878/* This is used very early in the lifetime of the program,
3879 * before even the options are parsed, so PL_tainting has
b0891165 3880 * not been initialized properly. */
af419de7 3881bool
8f42b153 3882Perl_doing_taint(int argc, char *argv[], char *envp[])
22f7c9c9 3883{
c3446a78
JH		 3884#ifndef PERL_IMPLICIT_SYS
3885 /* If we have PERL_IMPLICIT_SYS we can't call getuid() et alia
3886 * before we have an interpreter-- and the whole point of this
3887 * function is to be called at such an early stage. If you are on
3888 * a system with PERL_IMPLICIT_SYS but you do have a concept of
3889 * "tainted because running with altered effective ids', you'll
3890 * have to add your own checks somewhere in here. The two most
3891 * known samples of 'implicitness' are Win32 and NetWare, neither
3892 * of which has much of concept of 'uids'. */
dfff4baf
BF		 3893 Uid_t uid = PerlProc_getuid();
3894 Uid_t euid = PerlProc_geteuid();
3895 Gid_t gid = PerlProc_getgid();
3896 Gid_t egid = PerlProc_getegid();
6867be6d 3897 (void)envp;
22f7c9c9
JH		 3898
3899#ifdef VMS
af419de7 3900 uid |= gid << 16;
22f7c9c9
JH		 3901 euid |= egid << 16;
3902#endif
3903 if (uid && (euid != uid || egid != gid))
3904 return 1;
c3446a78 3905#endif /* !PERL_IMPLICIT_SYS */
af419de7
JH		 3906 /* This is a really primitive check; environment gets ignored only
3907 * if -T are the first chars together; otherwise one gets
3908 * "Too late" message. */
22f7c9c9 3909 if ( argc > 1 && argv[1][0] == '-'
305b8651 3910 && isALPHA_FOLD_EQ(argv[1][1], 't'))
22f7c9c9
JH		 3911 return 1;
3912 return 0;
3913}
22f7c9c9 3914
d0bafe7e
NC		 3915/* Passing the flag as a single char rather than a string is a slight space
3916 optimisation. The only message that isn't /^-.$/ is
3917 "program input from stdin", which is substituted in place of '\0', which
3918 could never be a command line flag. */
76e3520e 3919STATIC void
f20b2998 3920S_forbid_setid(pTHX_ const char flag, const bool suidscript) /* g */
bbce6d69 3921{
d0bafe7e
NC		 3922 char string[3] = "-x";
3923 const char *message = "program input from stdin";
3924
20b7effb 3925 PERL_UNUSED_CONTEXT;
d0bafe7e
NC		 3926 if (flag) {
3927 string[1] = flag;
3928 message = string;
3929 }
3930
ae3f3efd 3931#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
985213f2 3932 if (PerlProc_getuid() != PerlProc_geteuid())
d0bafe7e 3933 Perl_croak(aTHX_ "No %s allowed while running setuid", message);
985213f2 3934 if (PerlProc_getgid() != PerlProc_getegid())
d0bafe7e 3935 Perl_croak(aTHX_ "No %s allowed while running setgid", message);
ae3f3efd 3936#endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
f20b2998 3937 if (suidscript)
d0bafe7e 3938 Perl_croak(aTHX_ "No %s allowed with (suid) fdscript", message);
bbce6d69 3939}
3940
1ee4443e 3941void
5b235299
NC		 3942Perl_init_dbargs(pTHX)
3943{
3944 AV *const args = PL_dbargs = GvAV(gv_AVadd((gv_fetchpvs("DB::args",
3945 GV_ADDMULTI,
3946 SVt_PVAV))));
3947
3948 if (AvREAL(args)) {
3949 /* Someone has already created it.
3950 It might have entries, and if we just turn off AvREAL(), they will
3951 "leak" until global destruction. */
3952 av_clear(args);
3df49e2a 3953 if (SvTIED_mg((const SV *)args, PERL_MAGIC_tied))
7355df7e 3954 Perl_croak(aTHX_ "Cannot set tied @DB::args");
5b235299 3955 }
af80dd86 3956 AvREIFY_only(PL_dbargs);
5b235299
NC		 3957}
3958
3959void
1ee4443e 3960Perl_init_debugger(pTHX)
748a9306 3961{
c4420975 3962 HV * const ostash = PL_curstash;
a6d69523 3963 MAGIC *mg;
1ee4443e 3964
03d9f026 3965 PL_curstash = (HV *)SvREFCNT_inc_simple(PL_debstash);
5b235299
NC		 3966
3967 Perl_init_dbargs(aTHX);
8cece913
FC		 3968 PL_DBgv = MUTABLE_GV(
3969 SvREFCNT_inc(gv_fetchpvs("DB::DB", GV_ADDMULTI, SVt_PVGV))
3970 );
3971 PL_DBline = MUTABLE_GV(
3972 SvREFCNT_inc(gv_fetchpvs("DB::dbline", GV_ADDMULTI, SVt_PVAV))
3973 );
3974 PL_DBsub = MUTABLE_GV(SvREFCNT_inc(
3975 gv_HVadd(gv_fetchpvs("DB::sub", GV_ADDMULTI, SVt_PVHV))
3976 ));
5c1737d1 3977 PL_DBsingle = GvSV((gv_fetchpvs("DB::single", GV_ADDMULTI, SVt_PV)));
4c0f30d6
NC		 3978 if (!SvIOK(PL_DBsingle))
3979 sv_setiv(PL_DBsingle, 0);
a6d69523
TC		 3980 mg = sv_magicext(PL_DBsingle, NULL, PERL_MAGIC_debugvar, &PL_vtbl_debugvar, 0, 0);
3981 mg->mg_private = DBVARMG_SINGLE;
3982 SvSETMAGIC(PL_DBsingle);
3983
5c1737d1 3984 PL_DBtrace = GvSV((gv_fetchpvs("DB::trace", GV_ADDMULTI, SVt_PV)));
4c0f30d6
NC		 3985 if (!SvIOK(PL_DBtrace))
3986 sv_setiv(PL_DBtrace, 0);
a6d69523
TC		 3987 mg = sv_magicext(PL_DBtrace, NULL, PERL_MAGIC_debugvar, &PL_vtbl_debugvar, 0, 0);
3988 mg->mg_private = DBVARMG_TRACE;
3989 SvSETMAGIC(PL_DBtrace);
3990
5c1737d1 3991 PL_DBsignal = GvSV((gv_fetchpvs("DB::signal", GV_ADDMULTI, SVt_PV)));
4c0f30d6
NC		 3992 if (!SvIOK(PL_DBsignal))
3993 sv_setiv(PL_DBsignal, 0);
a6d69523
TC		 3994 mg = sv_magicext(PL_DBsignal, NULL, PERL_MAGIC_debugvar, &PL_vtbl_debugvar, 0, 0);
3995 mg->mg_private = DBVARMG_SIGNAL;
3996 SvSETMAGIC(PL_DBsignal);
3997
03d9f026 3998 SvREFCNT_dec(PL_curstash);
1ee4443e 3999 PL_curstash = ostash;
352d5a3a
LW		 4000}
4001
2ce36478
SM		 4002#ifndef STRESS_REALLOC
4003#define REASONABLE(size) (size)
0ff72558 4004#define REASONABLE_but_at_least(size,min) (size)
2ce36478
SM		 4005#else
4006#define REASONABLE(size) (1) /* unreasonable */
0ff72558 4007#define REASONABLE_but_at_least(size,min) (min)
2ce36478
SM		 4008#endif
4009
11343788 4010void
cea2e8a9 4011Perl_init_stacks(pTHX)
79072805 4012{
e336de0d 4013 /* start with 128-item stack and 8K cxstack */
3280af22 4014 PL_curstackinfo = new_stackinfo(REASONABLE(128),
e336de0d 4015 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3280af22
NIS		 4016 PL_curstackinfo->si_type = PERLSI_MAIN;
4017 PL_curstack = PL_curstackinfo->si_stack;
4018 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
79072805 4019
3280af22
NIS		 4020 PL_stack_base = AvARRAY(PL_curstack);
4021 PL_stack_sp = PL_stack_base;
4022 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
8990e307 4023
a02a5408 4024 Newx(PL_tmps_stack,REASONABLE(128),SV*);
3280af22
NIS		 4025 PL_tmps_floor = -1;
4026 PL_tmps_ix = -1;
4027 PL_tmps_max = REASONABLE(128);
8990e307 4028
a02a5408 4029 Newx(PL_markstack,REASONABLE(32),I32);
3280af22
NIS		 4030 PL_markstack_ptr = PL_markstack;
4031 PL_markstack_max = PL_markstack + REASONABLE(32);
79072805 4032
ce2f7c3b 4033 SET_MARK_OFFSET;
e336de0d 4034
a02a5408 4035 Newx(PL_scopestack,REASONABLE(32),I32);
d343c3ef
GG		 4036#ifdef DEBUGGING
4037 Newx(PL_scopestack_name,REASONABLE(32),const char*);
4038#endif
3280af22
NIS		 4039 PL_scopestack_ix = 0;
4040 PL_scopestack_max = REASONABLE(32);
79072805 4041
0ff72558 4042 Newx(PL_savestack,REASONABLE_but_at_least(128,SS_MAXPUSH),ANY);
3280af22 4043 PL_savestack_ix = 0;
0ff72558 4044 PL_savestack_max = REASONABLE_but_at_least(128,SS_MAXPUSH);
378cc40b 4045}
33b78306 4046
2ce36478
SM		 4047#undef REASONABLE
4048
76e3520e 4049STATIC void
cea2e8a9 4050S_nuke_stacks(pTHX)
6e72f9df 4051{
3280af22
NIS		 4052 while (PL_curstackinfo->si_next)
4053 PL_curstackinfo = PL_curstackinfo->si_next;
4054 while (PL_curstackinfo) {
4055 PERL_SI *p = PL_curstackinfo->si_prev;
bac4b2ad 4056 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3280af22
NIS		 4057 Safefree(PL_curstackinfo->si_cxstack);
4058 Safefree(PL_curstackinfo);
4059 PL_curstackinfo = p;
e336de0d 4060 }
3280af22
NIS		 4061 Safefree(PL_tmps_stack);
4062 Safefree(PL_markstack);
4063 Safefree(PL_scopestack);
58780814
GG		 4064#ifdef DEBUGGING
4065 Safefree(PL_scopestack_name);
4066#endif
3280af22 4067 Safefree(PL_savestack);
378cc40b 4068}
33b78306 4069
74e8ce34
NC		 4070void
4071Perl_populate_isa(pTHX_ const char *name, STRLEN len, ...)
4072{
4073 GV *const gv = gv_fetchpvn(name, len, GV_ADD | GV_ADDMULTI, SVt_PVAV);
4074 AV *const isa = GvAVn(gv);
4075 va_list args;
4076
4077 PERL_ARGS_ASSERT_POPULATE_ISA;
4078
4079 if(AvFILLp(isa) != -1)
4080 return;
4081
4082 /* NOTE: No support for tied ISA */
4083
4084 va_start(args, len);
4085 do {
4086 const char *const parent = va_arg(args, const char*);
4087 size_t parent_len;
4088
4089 if (!parent)
4090 break;
4091 parent_len = va_arg(args, size_t);
4092
4093 /* Arguments are supplied with a trailing :: */
4094 assert(parent_len > 2);
4095 assert(parent[parent_len - 1] == ':');
4096 assert(parent[parent_len - 2] == ':');
4097 av_push(isa, newSVpvn(parent, parent_len - 2));
4098 (void) gv_fetchpvn(parent, parent_len, GV_ADD, SVt_PVGV);
4099 } while (1);
4100 va_end(args);
4101}
4102
8990e307 4103
76e3520e 4104STATIC void
cea2e8a9 4105S_init_predump_symbols(pTHX)
45d8adaa 4106{
93a17b20 4107 GV *tmpgv;
af8c498a 4108 IO *io;
79072805 4109
64ace3f8 4110 sv_setpvs(get_sv("\"", GV_ADD), " ");
e23d9e2f
CS		 4111 PL_ofsgv = (GV*)SvREFCNT_inc(gv_fetchpvs(",", GV_ADD|GV_NOTQUAL, SVt_PV));
4112
d963bf01
NC		 4113
4114 /* Historically, PVIOs were blessed into IO::Handle, unless
4115 FileHandle was loaded, in which case they were blessed into
4116 that. Action at a distance.
4117 However, if we simply bless into IO::Handle, we break code
4118 that assumes that PVIOs will have (among others) a seek
4119 method. IO::File inherits from IO::Handle and IO::Seekable,
4120 and provides the needed methods. But if we simply bless into
4121 it, then we break code that assumed that by loading
4122 IO::Handle, *it* would work.
4123 So a compromise is to set up the correct @IO::File::ISA,
4124 so that code that does C<use IO::Handle>; will still work.
4125 */
4126
74e8ce34
NC		 4127 Perl_populate_isa(aTHX_ STR_WITH_LEN("IO::File::ISA"),
4128 STR_WITH_LEN("IO::Handle::"),
4129 STR_WITH_LEN("IO::Seekable::"),
4130 STR_WITH_LEN("Exporter::"),
4131 NULL);
d963bf01 4132
fafc274c 4133 PL_stdingv = gv_fetchpvs("STDIN", GV_ADD|GV_NOTQUAL, SVt_PVIO);
3280af22 4134 GvMULTI_on(PL_stdingv);
af8c498a 4135 io = GvIOp(PL_stdingv);
a04651f4 4136 IoTYPE(io) = IoTYPE_RDONLY;
af8c498a 4137 IoIFP(io) = PerlIO_stdin();
fafc274c 4138 tmpgv = gv_fetchpvs("stdin", GV_ADD|GV_NOTQUAL, SVt_PV);
a5f75d66 4139 GvMULTI_on(tmpgv);
a45c7426 4140 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
79072805 4141
fafc274c 4142 tmpgv = gv_fetchpvs("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
a5f75d66 4143 GvMULTI_on(tmpgv);
af8c498a 4144 io = GvIOp(tmpgv);
a04651f4 4145 IoTYPE(io) = IoTYPE_WRONLY;
af8c498a 4146 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
4633a7c4 4147 setdefout(tmpgv);
fafc274c 4148 tmpgv = gv_fetchpvs("stdout", GV_ADD|GV_NOTQUAL, SVt_PV);
a5f75d66 4149 GvMULTI_on(tmpgv);
a45c7426 4150 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
79072805 4151
fafc274c 4152 PL_stderrgv = gv_fetchpvs("STDERR", GV_ADD|GV_NOTQUAL, SVt_PVIO);
bf49b057
GS		 4153 GvMULTI_on(PL_stderrgv);
4154 io = GvIOp(PL_stderrgv);
a04651f4 4155 IoTYPE(io) = IoTYPE_WRONLY;
af8c498a 4156 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
fafc274c 4157 tmpgv = gv_fetchpvs("stderr", GV_ADD|GV_NOTQUAL, SVt_PV);
a5f75d66 4158 GvMULTI_on(tmpgv);
a45c7426 4159 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
79072805 4160
de61bf2a 4161 PL_statname = newSVpvs(""); /* last filename we did stat on */
79072805 4162}
33b78306 4163
a11ec5a9 4164void
5aaab254 4165Perl_init_argv_symbols(pTHX_ int argc, char **argv)
33b78306 4166{
7918f24d
NC		 4167 PERL_ARGS_ASSERT_INIT_ARGV_SYMBOLS;
4168
79072805 4169 argc--,argv++; /* skip name of script */
3280af22 4170 if (PL_doswitches) {
79072805 4171 for (; argc > 0 && **argv == '-'; argc--,argv++) {
aec46f14 4172 char *s;
79072805
LW		 4173 if (!argv[0][1])
4174 break;
379d538a 4175 if (argv[0][1] == '-' && !argv[0][2]) {
79072805
LW		 4176 argc--,argv++;
4177 break;
4178 }
155aba94 4179 if ((s = strchr(argv[0], '='))) {
b3d904f3
NC		 4180 const char *const start_name = argv[0] + 1;
4181 sv_setpv(GvSV(gv_fetchpvn_flags(start_name, s - start_name,
4182 TRUE, SVt_PV)), s + 1);
79072805
LW		 4183 }
4184 else
71315bf2 4185 sv_setiv(GvSV(gv_fetchpv(argv[0]+1, GV_ADD, SVt_PV)),1);
fe14fcc3 4186 }
79072805 4187 }
fafc274c 4188 if ((PL_argvgv = gv_fetchpvs("ARGV", GV_ADD|GV_NOTQUAL, SVt_PVAV))) {
722fa0e9 4189 SvREFCNT_inc_simple_void_NN(PL_argvgv);
a11ec5a9 4190 GvMULTI_on(PL_argvgv);
a11ec5a9
RGS		 4191 av_clear(GvAVn(PL_argvgv));
4192 for (; argc > 0; argc--,argv++) {
aec46f14 4193 SV * const sv = newSVpv(argv[0],0);
b188953e 4194 av_push(GvAV(PL_argvgv),sv);
ce81ff12
JH		 4195 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
4196 if (PL_unicode & PERL_UNICODE_ARGV_FLAG)
4197 SvUTF8_on(sv);
4198 }
a05d7ebb
JH		 4199 if (PL_unicode & PERL_UNICODE_WIDESYSCALLS_FLAG) /* Sarathy? */
4200 (void)sv_utf8_decode(sv);
a11ec5a9
RGS		 4201 }
4202 }
82f96200
JL		 4203
4204 if (PL_inplace && (!PL_argvgv || AvFILL(GvAV(PL_argvgv)) == -1))
4205 Perl_ck_warner_d(aTHX_ packWARN(WARN_INPLACE),
4206 "-i used with no filenames on the command line, "
4207 "reading from STDIN");
a11ec5a9
RGS		 4208}
4209
4210STATIC void
5aaab254 4211S_init_postdump_symbols(pTHX_ int argc, char **argv, char **env)
a11ec5a9 4212{
20b7effb 4213#ifdef USE_ITHREADS
27da23d5 4214 dVAR;
20b7effb 4215#endif
a11ec5a9 4216 GV* tmpgv;
a11ec5a9 4217
7918f24d
NC		 4218 PERL_ARGS_ASSERT_INIT_POSTDUMP_SYMBOLS;
4219
f2da823f 4220 PL_toptarget = newSV_type(SVt_PVIV);
76f68e9b 4221 sv_setpvs(PL_toptarget, "");
f2da823f 4222 PL_bodytarget = newSV_type(SVt_PVIV);
76f68e9b 4223 sv_setpvs(PL_bodytarget, "");
3280af22 4224 PL_formtarget = PL_bodytarget;
79072805 4225
bbce6d69 4226 TAINT;
a11ec5a9
RGS		 4227
4228 init_argv_symbols(argc,argv);
4229
fafc274c 4230 if ((tmpgv = gv_fetchpvs("0", GV_ADD|GV_NOTQUAL, SVt_PV))) {
3280af22 4231 sv_setpv(GvSV(tmpgv),PL_origfilename);
79072805 4232 }
fafc274c 4233 if ((PL_envgv = gv_fetchpvs("ENV", GV_ADD|GV_NOTQUAL, SVt_PVHV))) {
79072805 4234 HV *hv;
e17132c1 4235 bool env_is_not_environ;
cf93a474 4236 SvREFCNT_inc_simple_void_NN(PL_envgv);
3280af22
NIS		 4237 GvMULTI_on(PL_envgv);
4238 hv = GvHVn(PL_envgv);
a0714e2c 4239 hv_magic(hv, NULL, PERL_MAGIC_env);
2f42fcb0 4240#ifndef PERL_MICRO
fa6a1c44 4241#ifdef USE_ENVIRON_ARRAY
4633a7c4
LW		 4242 /* Note that if the supplied env parameter is actually a copy
4243 of the global environ then it may now point to free'd memory
4244 if the environment has been modified since. To avoid this
4245 problem we treat env==NULL as meaning 'use the default'
4246 */
4247 if (!env)
4248 env = environ;
e17132c1
JD		 4249 env_is_not_environ = env != environ;
4250 if (env_is_not_environ
4efc5df6
GS		 4251# ifdef USE_ITHREADS
4252 && PL_curinterp == aTHX
4253# endif
4254 )
4255 {
bd61b366 4256 environ[0] = NULL;
4efc5df6 4257 }
9b4eeda5 4258 if (env) {
9d27dca9 4259 char *s, *old_var;
27da23d5 4260 SV *sv;
764df951 4261 for (; *env; env++) {
9d27dca9
MT		 4262 old_var = *env;
4263
4264 if (!(s = strchr(old_var,'=')) || s == old_var)
79072805 4265 continue;
9d27dca9 4266
7da0e383 4267#if defined(MSDOS) && !defined(DJGPP)
61968511 4268 *s = '\0';
9d27dca9 4269 (void)strupr(old_var);
61968511 4270 *s = '=';
137443ea 4271#endif
61968511 4272 sv = newSVpv(s+1, 0);
9d27dca9 4273 (void)hv_store(hv, old_var, s - old_var, sv, 0);
e17132c1 4274 if (env_is_not_environ)
61968511 4275 mg_set(sv);
764df951 4276 }
9b4eeda5 4277 }
103a7189 4278#endif /* USE_ENVIRON_ARRAY */
2f42fcb0 4279#endif /* !PERL_MICRO */
79072805 4280 }
bbce6d69 4281 TAINT_NOT;
2710853f
MJD		 4282
4283 /* touch @F array to prevent spurious warnings 20020415 MJD */
4284 if (PL_minus_a) {
cbfd0a87 4285 (void) get_av("main::F", GV_ADD | GV_ADDMULTI);
2710853f 4286 }
33b78306 4287}
34de22dd 4288
76e3520e 4289STATIC void
2cace6ac 4290S_init_perllib(pTHX)
34de22dd 4291{
32910c7a 4292#ifndef VMS
929e5b34 4293 const char *perl5lib = NULL;
32910c7a 4294#endif
35ba5ce9 4295 const char *s;
a7560424 4296#if defined(WIN32) && !defined(PERL_IS_MINIPERL)
e6a0bbf8
NC		 4297 STRLEN len;
4298#endif
4299
284167a5 4300 if (!TAINTING_get) {
552a7a9b 4301#ifndef VMS
32910c7a 4302 perl5lib = PerlEnv_getenv("PERL5LIB");
88f5bc07
AB		 4303/*
4304 * It isn't possible to delete an environment variable with
42a3dd3a
RGS		 4305 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4306 * case we treat PERL5LIB as undefined if it has a zero-length value.
88f5bc07
AB		 4307 */
4308#if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
32910c7a 4309 if (perl5lib && *perl5lib != '\0')
88f5bc07 4310#else
32910c7a 4311 if (perl5lib)
88f5bc07 4312#endif
32910c7a 4313 incpush_use_sep(perl5lib, 0, INCPUSH_ADD_SUB_DIRS);
2cace6ac 4314 else {
4705144d
NC		 4315 s = PerlEnv_getenv("PERLLIB");
4316 if (s)
50d61629 4317 incpush_use_sep(s, 0, 0);
4705144d 4318 }
552a7a9b 4319#else /* VMS */
4320 /* Treat PERL5?LIB as a possible search list logical name -- the
4321 * "natural" VMS idiom for a Unix path string. We allow each
4322 * element to be a set of |-separated directories for compatibility.
4323 */
4324 char buf[256];
4325 int idx = 0;
4326 if (my_trnlnm("PERL5LIB",buf,0))
e28f3139 4327 do {
2cace6ac 4328 incpush_use_sep(buf, 0, INCPUSH_ADD_SUB_DIRS);
e28f3139 4329 } while (my_trnlnm("PERL5LIB",buf,++idx));
f05b5874 4330 else {
e28f3139 4331 while (my_trnlnm("PERLLIB",buf,idx++))
50d61629 4332 incpush_use_sep(buf, 0, 0);
f05b5874 4333 }
552a7a9b 4334#endif /* VMS */
85e6fe83 4335 }
34de22dd 4336
b0e687f7
NC		 4337#ifndef PERL_IS_MINIPERL
4338 /* miniperl gets just -I..., the split of $ENV{PERL5LIB}, and "." in @INC
4339 (and not the architecture specific directories from $ENV{PERL5LIB}) */
4340
c90c0ff4 4341/* Use the ~-expanded versions of APPLLIB (undocumented),
826e305c 4342 SITEARCH, SITELIB, VENDORARCH, VENDORLIB, ARCHLIB and PRIVLIB
df5cef82 4343*/
4633a7c4 4344#ifdef APPLLIB_EXP
be71fc8f
NC		 4345 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP),
4346 INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
16d20bd9 4347#endif
4633a7c4 4348
65f19062 4349#ifdef SITEARCH_EXP
3b290362
GS		 4350 /* sitearch is always relative to sitelib on Windows for
4351 * DLL-based path intuition to work correctly */
4352# if !defined(WIN32)
be71fc8f
NC		 4353 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITEARCH_EXP),
4354 INCPUSH_CAN_RELOCATE);
65f19062
GS		 4355# endif
4356#endif
4357
4633a7c4 4358#ifdef SITELIB_EXP
65f19062 4359# if defined(WIN32)
574c798a 4360 /* this picks up sitearch as well */
e6a0bbf8 4361 s = win32_get_sitelib(PERL_FS_VERSION, &len);
1fa74d9f 4362 if (s)
e6a0bbf8 4363 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
65f19062 4364# else
50d61629 4365 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_EXP), INCPUSH_CAN_RELOCATE);
65f19062
GS		 4366# endif
4367#endif
189d1e8d 4368
65f19062 4369#ifdef PERL_VENDORARCH_EXP
4ea817c6 4370 /* vendorarch is always relative to vendorlib on Windows for
3b290362
GS		 4371 * DLL-based path intuition to work correctly */
4372# if !defined(WIN32)
be71fc8f
NC		 4373 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORARCH_EXP),
4374 INCPUSH_CAN_RELOCATE);
65f19062 4375# endif
4b03c463 4376#endif
65f19062
GS		 4377
4378#ifdef PERL_VENDORLIB_EXP
4379# if defined(WIN32)
e28f3139 4380 /* this picks up vendorarch as well */
e6a0bbf8 4381 s = win32_get_vendorlib(PERL_FS_VERSION, &len);
1fa74d9f 4382 if (s)
e6a0bbf8 4383 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
65f19062 4384# else
be71fc8f
NC		 4385 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_EXP),
4386 INCPUSH_CAN_RELOCATE);
65f19062 4387# endif
a3635516 4388#endif
65f19062 4389
b9ba2fad 4390#ifdef ARCHLIB_EXP
2cace6ac 4391 S_incpush_use_sep(aTHX_ STR_WITH_LEN(ARCHLIB_EXP), INCPUSH_CAN_RELOCATE);
b9ba2fad
NC		 4392#endif
4393
4394#ifndef PRIVLIB_EXP
4395# define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
4396#endif
4397
4398#if defined(WIN32)
2cace6ac
NC		 4399 s = win32_get_privlib(PERL_FS_VERSION, &len);
4400 if (s)
4401 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
b9ba2fad 4402#else
04c9eecc 4403# ifdef NETWARE
2cace6ac 4404 S_incpush_use_sep(aTHX_ PRIVLIB_EXP, 0, INCPUSH_CAN_RELOCATE);
04c9eecc 4405# else
2cace6ac 4406 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PRIVLIB_EXP), INCPUSH_CAN_RELOCATE);
04c9eecc 4407# endif
b9ba2fad
NC		 4408#endif
4409
3b777bb4 4410#ifdef PERL_OTHERLIBDIRS
1e3208d8
NC		 4411 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS),
4412 INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_NOT_BASEDIR
2cace6ac
NC		 4413 |INCPUSH_CAN_RELOCATE);
4414#endif
2cace6ac 4415
284167a5 4416 if (!TAINTING_get) {
2cace6ac 4417#ifndef VMS
2cace6ac
NC		 4418/*
4419 * It isn't possible to delete an environment variable with
4420 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4421 * case we treat PERL5LIB as undefined if it has a zero-length value.
4422 */
4423#if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
32910c7a 4424 if (perl5lib && *perl5lib != '\0')
2cace6ac 4425#else
32910c7a 4426 if (perl5lib)
2cace6ac 4427#endif
32910c7a
NC		 4428 incpush_use_sep(perl5lib, 0,
4429 INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
2cace6ac
NC		 4430#else /* VMS */
4431 /* Treat PERL5?LIB as a possible search list logical name -- the
4432 * "natural" VMS idiom for a Unix path string. We allow each
4433 * element to be a set of |-separated directories for compatibility.
4434 */
4435 char buf[256];
4436 int idx = 0;
4437 if (my_trnlnm("PERL5LIB",buf,0))
4438 do {
be71fc8f
NC		 4439 incpush_use_sep(buf, 0,
4440 INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
2cace6ac
NC		 4441 } while (my_trnlnm("PERL5LIB",buf,++idx));
4442#endif /* VMS */
a26c0e28 4443 }
2cace6ac
NC		 4444
4445/* Use the ~-expanded versions of APPLLIB (undocumented),
826e305c 4446 SITELIB and VENDORLIB for older versions
2cace6ac
NC		 4447*/
4448#ifdef APPLLIB_EXP
be71fc8f
NC		 4449 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP), INCPUSH_ADD_OLD_VERS
4450 |INCPUSH_NOT_BASEDIR|INCPUSH_CAN_RELOCATE);
2cace6ac
NC		 4451#endif
4452
2cace6ac
NC		 4453#if defined(SITELIB_STEM) && defined(PERL_INC_VERSION_LIST)
4454 /* Search for version-specific dirs below here */
be71fc8f
NC		 4455 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_STEM),
4456 INCPUSH_ADD_OLD_VERS|INCPUSH_CAN_RELOCATE);
2cace6ac
NC		 4457#endif
4458
4459
4460#if defined(PERL_VENDORLIB_STEM) && defined(PERL_INC_VERSION_LIST)
4461 /* Search for version-specific dirs below here */
be71fc8f
NC		 4462 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_STEM),
4463 INCPUSH_ADD_OLD_VERS|INCPUSH_CAN_RELOCATE);
2cace6ac
NC		 4464#endif
4465
4466#ifdef PERL_OTHERLIBDIRS
1e3208d8
NC		 4467 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS),
4468 INCPUSH_ADD_OLD_VERS|INCPUSH_ADD_ARCHONLY_SUB_DIRS
4469 |INCPUSH_CAN_RELOCATE);
3b777bb4 4470#endif
b0e687f7 4471#endif /* !PERL_IS_MINIPERL */
3b777bb4 4472
284167a5 4473 if (!TAINTING_get)
55b4bc1c 4474 S_incpush(aTHX_ STR_WITH_LEN("."), 0);
774d564b 4475}
4476
739a0b84 4477#if defined(DOSISH) || defined(__SYMBIAN32__)
774d564b 4478# define PERLLIB_SEP ';'
4479#else
4480# if defined(VMS)
4481# define PERLLIB_SEP '|'
4482# else
e37778c2 4483# define PERLLIB_SEP ':'
774d564b 4484# endif
4485#endif
4486#ifndef PERLLIB_MANGLE
4487# define PERLLIB_MANGLE(s,n) (s)
ac27b0f5 4488#endif
774d564b 4489
59d6f6a4 4490#ifndef PERL_IS_MINIPERL
ad17a1ae
NC		 4491/* Push a directory onto @INC if it exists.
4492 Generate a new SV if we do this, to save needing to copy the SV we push
4493 onto @INC */
4494STATIC SV *
7ffdaae6 4495S_incpush_if_exists(pTHX_ AV *const av, SV *dir, SV *const stem)
ad17a1ae
NC		 4496{
4497 Stat_t tmpstatbuf;
7918f24d
NC		 4498
4499 PERL_ARGS_ASSERT_INCPUSH_IF_EXISTS;
4500
848ef955 4501 if (PerlLIO_stat(SvPVX_const(dir), &tmpstatbuf) >= 0 &&
ad17a1ae 4502 S_ISDIR(tmpstatbuf.st_mode)) {
3a9a9ba7 4503 av_push(av, dir);
7ffdaae6
NC		 4504 dir = newSVsv(stem);
4505 } else {
4506 /* Truncate dir back to stem. */
4507 SvCUR_set(dir, SvCUR(stem));
ad17a1ae
NC		 4508 }
4509 return dir;
4510}
59d6f6a4 4511#endif
ad17a1ae 4512
c29067d7
CH		 4513STATIC SV *
4514S_mayberelocate(pTHX_ const char *const dir, STRLEN len, U32 flags)
774d564b 4515{
6434436b 4516 const U8 canrelocate = (U8)flags & INCPUSH_CAN_RELOCATE;
c29067d7 4517 SV *libdir;
774d564b 4518
c29067d7 4519 PERL_ARGS_ASSERT_MAYBERELOCATE;
08d0d8ab 4520 assert(len > 0);
3a9a9ba7 4521
d2898d73
EB		 4522 /* I am not convinced that this is valid when PERLLIB_MANGLE is
4523 defined to so something (in os2/os2.c), but the code has been
4524 this way, ignoring any possible changed of length, since
4525 760ac839baf413929cd31cc32ffd6dba6b781a81 (5.003_02) so I'll leave
4526 it be. */
4527 libdir = newSVpvn(PERLLIB_MANGLE(dir, len), len);
774d564b 4528
81600524 4529#ifdef VMS
db12e2d3 4530 {
81600524 4531 char *unix;
81600524
CB		 4532
4533 if ((unix = tounixspec_ts(SvPV(libdir,len),NULL)) != NULL) {
4534 len = strlen(unix);
f420cce1 4535 while (len > 1 && unix[len-1] == '/') len--; /* Cosmetic */
81600524
CB		 4536 sv_usepvn(libdir,unix,len);
4537 }
4538 else
4539 PerlIO_printf(Perl_error_log,
4540 "Failed to unixify @INC element \"%s\"\n",
9dfa9235 4541 SvPV_nolen_const(libdir));
db12e2d3 4542 }
81600524
CB		 4543#endif
4544
dd374669
AL		 4545 /* Do the if() outside the #ifdef to avoid warnings about an unused
4546 parameter. */
4547 if (canrelocate) {
88fe16b2
NC		 4548#ifdef PERL_RELOCATABLE_INC
4549 /*
4550 * Relocatable include entries are marked with a leading .../
4551 *
4552 * The algorithm is
4553 * 0: Remove that leading ".../"
4554 * 1: Remove trailing executable name (anything after the last '/')
4555 * from the perl path to give a perl prefix
4556 * Then
4557 * While the @INC element starts "../" and the prefix ends with a real
4558 * directory (ie not . or ..) chop that real directory off the prefix
4559 * and the leading "../" from the @INC element. ie a logical "../"
4560 * cleanup
4561 * Finally concatenate the prefix and the remainder of the @INC element
4562 * The intent is that /usr/local/bin/perl and .../../lib/perl5
4563 * generates /usr/local/lib/perl5
4564 */
890ce7af 4565 const char *libpath = SvPVX(libdir);
88fe16b2
NC		 4566 STRLEN libpath_len = SvCUR(libdir);
4567 if (libpath_len >= 4 && memEQ (libpath, ".../", 4)) {
4568 /* Game on! */
890ce7af 4569 SV * const caret_X = get_sv("\030", 0);
88fe16b2
NC		 4570 /* Going to use the SV just as a scratch buffer holding a C
4571 string: */
4572 SV *prefix_sv;
4573 char *prefix;
4574 char *lastslash;
4575
4576 /* $^X is *the* source of taint if tainting is on, hence
4577 SvPOK() won't be true. */
4578 assert(caret_X);
4579 assert(SvPOKp(caret_X));
a663657d
NC		 4580 prefix_sv = newSVpvn_flags(SvPVX(caret_X), SvCUR(caret_X),
4581 SvUTF8(caret_X));
88fe16b2
NC		 4582 /* Firstly take off the leading .../
4583 If all else fail we'll do the paths relative to the current
4584 directory. */
4585 sv_chop(libdir, libpath + 4);
4586 /* Don't use SvPV as we're intentionally bypassing taining,
4587 mortal copies that the mg_get of tainting creates, and
4588 corruption that seems to come via the save stack.
4589 I guess that the save stack isn't correctly set up yet. */
4590 libpath = SvPVX(libdir);
4591 libpath_len = SvCUR(libdir);
4592
4593 /* This would work more efficiently with memrchr, but as it's
4594 only a GNU extension we'd need to probe for it and
4595 implement our own. Not hard, but maybe not worth it? */
4596
4597 prefix = SvPVX(prefix_sv);
4598 lastslash = strrchr(prefix, '/');
4599
4600 /* First time in with the *lastslash = '\0' we just wipe off
4601 the trailing /perl from (say) /usr/foo/bin/perl
4602 */
4603 if (lastslash) {
4604 SV *tempsv;
4605 while ((*lastslash = '\0'), /* Do that, come what may. */
4606 (libpath_len >= 3 && memEQ(libpath, "../", 3)
4607 && (lastslash = strrchr(prefix, '/')))) {
4608 if (lastslash[1] == '\0'
4609 || (lastslash[1] == '.'
4610 && (lastslash[2] == '/' /* ends "/." */
4611 || (lastslash[2] == '/'
4612 && lastslash[3] == '/' /* or "/.." */
4613 )))) {
4614 /* Prefix ends "/" or "/." or "/..", any of which
4615 are fishy, so don't do any more logical cleanup.
4616 */
4617 break;
4618 }
4619 /* Remove leading "../" from path */
4620 libpath += 3;
4621 libpath_len -= 3;
4622 /* Next iteration round the loop removes the last
4623 directory name from prefix by writing a '\0' in
4624 the while clause. */
4625 }
4626 /* prefix has been terminated with a '\0' to the correct
4627 length. libpath points somewhere into the libdir SV.
4628 We need to join the 2 with '/' and drop the result into
4629 libdir. */
4630 tempsv = Perl_newSVpvf(aTHX_ "%s/%s", prefix, libpath);
4631 SvREFCNT_dec(libdir);
4632 /* And this is the new libdir. */
4633 libdir = tempsv;
284167a5 4634 if (TAINTING_get &&
985213f2
AB		 4635 (PerlProc_getuid() != PerlProc_geteuid() ||
4636 PerlProc_getgid() != PerlProc_getegid())) {
486ec47a 4637 /* Need to taint relocated paths if running set ID */
88fe16b2
NC		 4638 SvTAINTED_on(libdir);
4639 }
4640 }
4641 SvREFCNT_dec(prefix_sv);
4642 }
88fe16b2 4643#endif
dd374669 4644 }
c29067d7 4645 return libdir;
c29067d7
CH		 4646}
4647
4648STATIC void
4649S_incpush(pTHX_ const char *const dir, STRLEN len, U32 flags)
4650{
c29067d7
CH		 4651#ifndef PERL_IS_MINIPERL
4652 const U8 using_sub_dirs
4653 = (U8)flags & (INCPUSH_ADD_VERSIONED_SUB_DIRS
4654 |INCPUSH_ADD_ARCHONLY_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
4655 const U8 add_versioned_sub_dirs
4656 = (U8)flags & INCPUSH_ADD_VERSIONED_SUB_DIRS;
4657 const U8 add_archonly_sub_dirs
4658 = (U8)flags & INCPUSH_ADD_ARCHONLY_SUB_DIRS;
4659#ifdef PERL_INC_VERSION_LIST
4660 const U8 addoldvers = (U8)flags & INCPUSH_ADD_OLD_VERS;
4661#endif
4662#endif
4663 const U8 unshift = (U8)flags & INCPUSH_UNSHIFT;
4664 const U8 push_basedir = (flags & INCPUSH_NOT_BASEDIR) ? 0 : 1;
4665 AV *const inc = GvAVn(PL_incgv);
4666
4667 PERL_ARGS_ASSERT_INCPUSH;
4668 assert(len > 0);
4669
4670 /* Could remove this vestigial extra block, if we don't mind a lot of
4671 re-indenting diff noise. */
4672 {
5a702b9a 4673 SV *const libdir = mayberelocate(dir, len, flags);
c29067d7
CH		 4674 /* Change 20189146be79a0596543441fa369c6bf7f85103f, to fix RT#6665,
4675 arranged to unshift #! line -I onto the front of @INC. However,
4676 -I can add version and architecture specific libraries, and they
4677 need to go first. The old code assumed that it was always
4678 pushing. Hence to make it work, need to push the architecture
4679 (etc) libraries onto a temporary array, then "unshift" that onto
4680 the front of @INC. */
4681#ifndef PERL_IS_MINIPERL
4682 AV *const av = (using_sub_dirs) ? (unshift ? newAV() : inc) : NULL;
c29067d7 4683
774d564b 4684 /*
4685 * BEFORE pushing libdir onto @INC we may first push version- and
4686 * archname-specific sub-directories.
4687 */
ee80e7be 4688 if (using_sub_dirs) {
5a702b9a 4689 SV *subdir = newSVsv(libdir);
29d82f8d 4690#ifdef PERL_INC_VERSION_LIST
8353b874 4691 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
c4420975
AL		 4692 const char * const incverlist[] = { PERL_INC_VERSION_LIST };
4693 const char * const *incver;
29d82f8d 4694#endif
7ffdaae6 4695
1e3208d8 4696 if (add_versioned_sub_dirs) {
9c8a64f0 4697 /* .../version/archname if -d .../version/archname */
e51b748d 4698 sv_catpvs(subdir, "/" PERL_FS_VERSION "/" ARCHNAME);
7ffdaae6 4699 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4b03c463 4700
9c8a64f0 4701 /* .../version if -d .../version */
e51b748d 4702 sv_catpvs(subdir, "/" PERL_FS_VERSION);
7ffdaae6 4703 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
29d82f8d 4704 }
9c8a64f0 4705
9c8a64f0 4706#ifdef PERL_INC_VERSION_LIST
ccc2aad8 4707 if (addoldvers) {
9c8a64f0
GS		 4708 for (incver = incverlist; *incver; incver++) {
4709 /* .../xxx if -d .../xxx */
e51b748d 4710 Perl_sv_catpvf(aTHX_ subdir, "/%s", *incver);
7ffdaae6 4711 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
9c8a64f0
GS		 4712 }
4713 }
29d82f8d 4714#endif
c992324b 4715
1e3208d8 4716 if (add_archonly_sub_dirs) {
c992324b 4717 /* .../archname if -d .../archname */
e51b748d 4718 sv_catpvs(subdir, "/" ARCHNAME);
7ffdaae6 4719 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
c992324b
NC		 4720
4721 }
10cc20f6
NC		 4722
4723 assert (SvREFCNT(subdir) == 1);
4724 SvREFCNT_dec(subdir);
774d564b 4725 }
59d6f6a4 4726#endif /* !PERL_IS_MINIPERL */
20189146
RGS		 4727 /* finally add this lib directory at the end of @INC */
4728 if (unshift) {
76895e89 4729#ifdef PERL_IS_MINIPERL
c70927a6 4730 const Size_t extra = 0;
76895e89 4731#else
b9f2b683 4732 Size_t extra = av_tindex(av) + 1;
76895e89 4733#endif
a26c0e28
NC		 4734 av_unshift(inc, extra + push_basedir);
4735 if (push_basedir)
4736 av_store(inc, extra, libdir);
76895e89 4737#ifndef PERL_IS_MINIPERL
3a9a9ba7
NC		 4738 while (extra--) {
4739 /* av owns a reference, av_store() expects to be donated a
4740 reference, and av expects to be sane when it's cleared.
4741 If I wanted to be naughty and wrong, I could peek inside the
4742 implementation of av_clear(), realise that it uses
4743 SvREFCNT_dec() too, so av's array could be a run of NULLs,
4744 and so directly steal from it (with a memcpy() to inc, and
4745 then memset() to NULL them out. But people copy code from the
4746 core expecting it to be best practise, so let's use the API.
4747 Although studious readers will note that I'm not checking any
4748 return codes. */
4749 av_store(inc, extra, SvREFCNT_inc(*av_fetch(av, extra, FALSE)));
4750 }
4751 SvREFCNT_dec(av);
59d6f6a4 4752#endif
20189146 4753 }
a26c0e28 4754 else if (push_basedir) {
3a9a9ba7 4755 av_push(inc, libdir);
20189146 4756 }
a26c0e28
NC		 4757
4758 if (!push_basedir) {
4759 assert (SvREFCNT(libdir) == 1);
4760 SvREFCNT_dec(libdir);
4761 }
774d564b 4762 }
34de22dd 4763}
93a17b20 4764
55b4bc1c 4765STATIC void
50d61629 4766S_incpush_use_sep(pTHX_ const char *p, STRLEN len, U32 flags)
55b4bc1c 4767{
50d61629
NC		 4768 const char *s;
4769 const char *end;
55b4bc1c
NC		 4770 /* This logic has been broken out from S_incpush(). It may be possible to
4771 simplify it. */
4772
4705144d
NC		 4773 PERL_ARGS_ASSERT_INCPUSH_USE_SEP;
4774
f31c6eed
JD		 4775 /* perl compiled with -DPERL_RELOCATABLE_INCPUSH will ignore the len
4776 * argument to incpush_use_sep. This allows creation of relocatable
4777 * Perl distributions that patch the binary at install time. Those
4778 * distributions will have to provide their own relocation tools; this
4779 * is not a feature otherwise supported by core Perl.
4780 */
4781#ifndef PERL_RELOCATABLE_INCPUSH
50d61629 4782 if (!len)
f31c6eed 4783#endif
50d61629
NC		 4784 len = strlen(p);
4785
4786 end = p + len;
4787
55b4bc1c 4788 /* Break at all separators */
e42f52dd 4789 while ((s = (const char*)memchr(p, PERLLIB_SEP, end - p))) {
50d61629
NC		 4790 if (s == p) {
4791 /* skip any consecutive separators */
55b4bc1c 4792
55b4bc1c 4793 /* Uncomment the next line for PATH semantics */
50d61629 4794 /* But you'll need to write tests */
55b4bc1c 4795 /* av_push(GvAVn(PL_incgv), newSVpvs(".")); */
50d61629 4796 } else {
55b4bc1c 4797 incpush(p, (STRLEN)(s - p), flags);
55b4bc1c 4798 }
50d61629 4799 p = s + 1;
55b4bc1c 4800 }
50d61629
NC		 4801 if (p != end)
4802 incpush(p, (STRLEN)(end - p), flags);
4803
55b4bc1c 4804}
199100c8 4805
93a17b20 4806void
864dbfa3 4807Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
93a17b20 4808{
971a9dd3 4809 SV *atsv;
5f40764f 4810 volatile const line_t oldline = PL_curcop ? CopLINE(PL_curcop) : 0;
312caa8e 4811 CV *cv;
22921e25 4812 STRLEN len;
6224f72b 4813 int ret;
db36c5a1 4814 dJMPENV;
93a17b20 4815
7918f24d
NC		 4816 PERL_ARGS_ASSERT_CALL_LIST;
4817
b9f2b683 4818 while (av_tindex(paramList) >= 0) {
ea726b52 4819 cv = MUTABLE_CV(av_shift(paramList));
ece599bd
RGS		 4820 if (PL_savebegin) {
4821 if (paramList == PL_beginav) {
059a8bb7 4822 /* save PL_beginav for compiler */
ad64d0ec 4823 Perl_av_create_and_push(aTHX_ &PL_beginav_save, MUTABLE_SV(cv));
ece599bd
RGS		 4824 }
4825 else if (paramList == PL_checkav) {
4826 /* save PL_checkav for compiler */
ad64d0ec 4827 Perl_av_create_and_push(aTHX_ &PL_checkav_save, MUTABLE_SV(cv));
ece599bd 4828 }
3c10abe3
AG		 4829 else if (paramList == PL_unitcheckav) {
4830 /* save PL_unitcheckav for compiler */
ad64d0ec 4831 Perl_av_create_and_push(aTHX_ &PL_unitcheckav_save, MUTABLE_SV(cv));
3c10abe3 4832 }
059a8bb7 4833 } else {
b5bbe64a 4834 SAVEFREESV(cv);
059a8bb7 4835 }
14dd3ad8 4836 JMPENV_PUSH(ret);
6224f72b 4837 switch (ret) {
312caa8e 4838 case 0:
d6f07c05 4839 CALL_LIST_BODY(cv);
971a9dd3 4840 atsv = ERRSV;
10516c54 4841 (void)SvPV_const(atsv, len);
312caa8e
CS		 4842 if (len) {
4843 PL_curcop = &PL_compiling;
57843af0 4844 CopLINE_set(PL_curcop, oldline);
312caa8e 4845 if (paramList == PL_beginav)
396482e1 4846 sv_catpvs(atsv, "BEGIN failed--compilation aborted");
312caa8e 4847 else
4f25aa18
GS		 4848 Perl_sv_catpvf(aTHX_ atsv,
4849 "%s failed--call queue aborted",
7d30b5c4 4850 paramList == PL_checkav ? "CHECK"
4f25aa18 4851 : paramList == PL_initav ? "INIT"
3c10abe3 4852 : paramList == PL_unitcheckav ? "UNITCHECK"
4f25aa18 4853 : "END");
312caa8e
CS		 4854 while (PL_scopestack_ix > oldscope)
4855 LEAVE;
14dd3ad8 4856 JMPENV_POP;
be2597df 4857 Perl_croak(aTHX_ "%"SVf"", SVfARG(atsv));
a0d0e21e 4858 }
85e6fe83 4859 break;
6224f72b 4860 case 1:
f86702cc 4861 STATUS_ALL_FAILURE;
924ba076 4862 /* FALLTHROUGH */
6224f72b 4863 case 2:
85e6fe83 4864 /* my_exit() was called */
3280af22 4865 while (PL_scopestack_ix > oldscope)
2ae324a7 4866 LEAVE;
84902520 4867 FREETMPS;
03d9f026 4868 SET_CURSTASH(PL_defstash);
3280af22 4869 PL_curcop = &PL_compiling;
57843af0 4870 CopLINE_set(PL_curcop, oldline);
14dd3ad8 4871 JMPENV_POP;
f86702cc 4872 my_exit_jump();
a25b5927 4873 assert(0); /* NOTREACHED */
6224f72b 4874 case 3:
312caa8e
CS		 4875 if (PL_restartop) {
4876 PL_curcop = &PL_compiling;
57843af0 4877 CopLINE_set(PL_curcop, oldline);
312caa8e 4878 JMPENV_JUMP(3);
85e6fe83 4879 }
5637ef5b 4880 PerlIO_printf(Perl_error_log, "panic: restartop in call_list\n");
312caa8e
CS		 4881 FREETMPS;
4882 break;
8990e307 4883 }
14dd3ad8 4884 JMPENV_POP;
93a17b20 4885 }
93a17b20 4886}
93a17b20 4887
f86702cc 4888void
864dbfa3 4889Perl_my_exit(pTHX_ U32 status)
f86702cc 4890{
6136213b
JGM		 4891 if (PL_exit_flags & PERL_EXIT_ABORT) {
4892 abort();
4893 }
4894 if (PL_exit_flags & PERL_EXIT_WARN) {
4895 PL_exit_flags |= PERL_EXIT_ABORT; /* Protect against reentrant calls */
7b0eb0b8 4896 Perl_warn(aTHX_ "Unexpected exit %lu", (unsigned long)status);
6136213b
JGM		 4897 PL_exit_flags &= ~PERL_EXIT_ABORT;
4898 }
f86702cc 4899 switch (status) {
4900 case 0:
4901 STATUS_ALL_SUCCESS;
4902 break;
4903 case 1:
4904 STATUS_ALL_FAILURE;
4905 break;
4906 default:
6ac6a52b 4907 STATUS_EXIT_SET(status);
f86702cc 4908 break;
4909 }
4910 my_exit_jump();
4911}
4912
4913void
864dbfa3 4914Perl_my_failure_exit(pTHX)
f86702cc 4915{
4916#ifdef VMS
fb38d079
JM		 4917 /* We have been called to fall on our sword. The desired exit code
4918 * should be already set in STATUS_UNIX, but could be shifted over
0968cdad
JM		 4919 * by 8 bits. STATUS_UNIX_EXIT_SET will handle the cases where a
4920 * that code is set.
fb38d079
JM		 4921 *
4922 * If an error code has not been set, then force the issue.
4923 */
0968cdad
JM		 4924 if (MY_POSIX_EXIT) {
4925
e08e1e1d
JM		 4926 /* According to the die_exit.t tests, if errno is non-zero */
4927 /* It should be used for the error status. */
0968cdad 4928
e08e1e1d
JM		 4929 if (errno == EVMSERR) {
4930 STATUS_NATIVE = vaxc$errno;
4931 } else {
0968cdad 4932
e08e1e1d
JM		 4933 /* According to die_exit.t tests, if the child_exit code is */
4934 /* also zero, then we need to exit with a code of 255 */
4935 if ((errno != 0) && (errno < 256))
4936 STATUS_UNIX_EXIT_SET(errno);
4937 else if (STATUS_UNIX < 255) {
0968cdad 4938 STATUS_UNIX_EXIT_SET(255);
e08e1e1d
JM		 4939 }
4940
0968cdad 4941 }
e08e1e1d
JM		 4942
4943 /* The exit code could have been set by $? or vmsish which
4944 * means that it may not have fatal set. So convert
4945 * success/warning codes to fatal with out changing
4946 * the POSIX status code. The severity makes VMS native
4947 * status handling work, while UNIX mode programs use the
4948 * the POSIX exit codes.
4949 */
4950 if ((STATUS_NATIVE & (STS$K_SEVERE|STS$K_ERROR)) == 0) {
4951 STATUS_NATIVE &= STS$M_COND_ID;
4952 STATUS_NATIVE |= STS$K_ERROR | STS$M_INHIB_MSG;
4953 }
0968cdad
JM		 4954 }
4955 else {
4956 /* Traditionally Perl on VMS always expects a Fatal Error. */
4957 if (vaxc$errno & 1) {
4958
4959 /* So force success status to failure */
4960 if (STATUS_NATIVE & 1)
4961 STATUS_ALL_FAILURE;
4962 }
4963 else {
4964 if (!vaxc$errno) {
4965 STATUS_UNIX = EINTR; /* In case something cares */
4966 STATUS_ALL_FAILURE;
4967 }
4968 else {
4969 int severity;
4970 STATUS_NATIVE = vaxc$errno; /* Should already be this */
4971
4972 /* Encode the severity code */
4973 severity = STATUS_NATIVE & STS$M_SEVERITY;
4974 STATUS_UNIX = (severity ? severity : 1) << 8;
4975
4976 /* Perl expects this to be a fatal error */
4977 if (severity != STS$K_SEVERE)
4978 STATUS_ALL_FAILURE;
4979 }
4980 }
4981 }
fb38d079 4982
f86702cc 4983#else
9b599b2a 4984 int exitstatus;
f86702cc 4985 if (errno & 255)
e5218da5 4986 STATUS_UNIX_SET(errno);
9b599b2a 4987 else {
e5218da5 4988 exitstatus = STATUS_UNIX >> 8;
9b599b2a 4989 if (exitstatus & 255)
e5218da5 4990 STATUS_UNIX_SET(exitstatus);
9b599b2a 4991 else
e5218da5 4992 STATUS_UNIX_SET(255);
9b599b2a 4993 }
f86702cc 4994#endif
6136213b
JGM		 4995 if (PL_exit_flags & PERL_EXIT_ABORT) {
4996 abort();
4997 }
4998 if (PL_exit_flags & PERL_EXIT_WARN) {
4999 PL_exit_flags |= PERL_EXIT_ABORT; /* Protect against reentrant calls */
7b0eb0b8 5000 Perl_warn(aTHX_ "Unexpected exit failure %ld", (long)PL_statusvalue);
6136213b
JGM		 5001 PL_exit_flags &= ~PERL_EXIT_ABORT;
5002 }
f86702cc 5003 my_exit_jump();
93a17b20
LW		 5004}
5005
76e3520e 5006STATIC void
cea2e8a9 5007S_my_exit_jump(pTHX)
f86702cc 5008{
3280af22
NIS		 5009 if (PL_e_script) {
5010 SvREFCNT_dec(PL_e_script);
a0714e2c 5011 PL_e_script = NULL;
f86702cc 5012 }
5013
3280af22 5014 POPSTACK_TO(PL_mainstack);
f97a0ef2
RH		 5015 dounwind(-1);
5016 LEAVE_SCOPE(0);
ff0cee69 5017
6224f72b 5018 JMPENV_JUMP(2);
f86702cc 5019}
873ef191 5020
0cb96387 5021static I32
acfe0abc 5022read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen)
873ef191 5023{
9d4ba2ae
AL		 5024 const char * const p = SvPVX_const(PL_e_script);
5025 const char *nl = strchr(p, '\n');
5026
5027 PERL_UNUSED_ARG(idx);
5028 PERL_UNUSED_ARG(maxlen);
dd374669 5029
3280af22 5030 nl = (nl) ? nl+1 : SvEND(PL_e_script);
7dfe3f66 5031 if (nl-p == 0) {
0cb96387 5032 filter_del(read_e_script);
873ef191 5033 return 0;
7dfe3f66 5034 }
873ef191 5035 sv_catpvn(buf_sv, p, nl-p);
3280af22 5036 sv_chop(PL_e_script, nl);
873ef191
GS		 5037 return 1;
5038}
66610fdd
RGS		 5039
5040/*
5041 * Local variables:
5042 * c-indentation-style: bsd
5043 * c-basic-offset: 4
14d04a33 5044 * indent-tabs-mode: nil
66610fdd
RGS		 5045 * End:
5046 *
14d04a33 5047 * ex: set ts=8 sts=4 sw=4 et:
37442d52 5048 */
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