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a0d0e21e
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1/* perl.c
2 *
4bb101f2 3 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999,
770526c1 4 * 2000, 2001, 2002, 2003, 2004, 2005, by Larry Wall and others
a687059c 5 *
352d5a3a
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6 * You may distribute under the terms of either the GNU General Public
7 * License or the Artistic License, as specified in the README file.
a687059c 8 *
8d063cd8
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9 */
10
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11/*
12 * "A ship then new they built for him/of mithril and of elven glass" --Bilbo
13 */
45d8adaa 14
166f8a29
DM
15/* This file contains the top-level functions that are used to create, use
16 * and destroy a perl interpreter, plus the functions used by XS code to
17 * call back into perl. Note that it does not contain the actual main()
ddfa107c 18 * function of the interpreter; that can be found in perlmain.c
166f8a29
DM
19 */
20
ae3f3efd
PS
21/* PSz 12 Nov 03
22 *
23 * Be proud that perl(1) may proclaim:
24 * Setuid Perl scripts are safer than C programs ...
25 * Do not abandon (deprecate) suidperl. Do not advocate C wrappers.
26 *
27 * The flow was: perl starts, notices script is suid, execs suidperl with same
28 * arguments; suidperl opens script, checks many things, sets itself with
29 * right UID, execs perl with similar arguments but with script pre-opened on
30 * /dev/fd/xxx; perl checks script is as should be and does work. This was
31 * insecure: see perlsec(1) for many problems with this approach.
32 *
33 * The "correct" flow should be: perl starts, opens script and notices it is
34 * suid, checks many things, execs suidperl with similar arguments but with
35 * script on /dev/fd/xxx; suidperl checks script and /dev/fd/xxx object are
36 * same, checks arguments match #! line, sets itself with right UID, execs
37 * perl with same arguments; perl checks many things and does work.
38 *
39 * (Opening the script in perl instead of suidperl, we "lose" scripts that
40 * are readable to the target UID but not to the invoker. Where did
41 * unreadable scripts work anyway?)
42 *
43 * For now, suidperl and perl are pretty much the same large and cumbersome
44 * program, so suidperl can check its argument list (see comments elsewhere).
45 *
46 * References:
47 * Original bug report:
48 * http://bugs.perl.org/index.html?req=bug_id&bug_id=20010322.218
49 * http://rt.perl.org/rt2/Ticket/Display.html?id=6511
50 * Comments and discussion with Debian:
51 * http://bugs.debian.org/203426
52 * http://bugs.debian.org/220486
53 * Debian Security Advisory DSA 431-1 (does not fully fix problem):
54 * http://www.debian.org/security/2004/dsa-431
55 * CVE candidate:
56 * http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0618
57 * Previous versions of this patch sent to perl5-porters:
58 * http://www.mail-archive.com/perl5-porters@perl.org/msg71953.html
59 * http://www.mail-archive.com/perl5-porters@perl.org/msg75245.html
60 * http://www.mail-archive.com/perl5-porters@perl.org/msg75563.html
61 * http://www.mail-archive.com/perl5-porters@perl.org/msg75635.html
62 *
63Paul Szabo - psz@maths.usyd.edu.au http://www.maths.usyd.edu.au:8000/u/psz/
64School of Mathematics and Statistics University of Sydney 2006 Australia
65 *
66 */
67/* PSz 13 Nov 03
68 * Use truthful, neat, specific error messages.
69 * Cannot always hide the truth; security must not depend on doing so.
70 */
71
72/* PSz 18 Feb 04
73 * Use global(?), thread-local fdscript for easier checks.
74 * (I do not understand how we could possibly get a thread race:
75 * do not all threads go through the same initialization? Or in
76 * fact, are not threads started only after we get the script and
77 * so know what to do? Oh well, make things super-safe...)
78 */
79
378cc40b 80#include "EXTERN.h"
864dbfa3 81#define PERL_IN_PERL_C
378cc40b 82#include "perl.h"
e3321bb0 83#include "patchlevel.h" /* for local_patches */
378cc40b 84
011f1a1a
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85#ifdef NETWARE
86#include "nwutil.h"
87char *nw_get_sitelib(const char *pl);
88#endif
89
df5cef82 90/* XXX If this causes problems, set i_unistd=undef in the hint file. */
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91#ifdef I_UNISTD
92#include <unistd.h>
93#endif
a0d0e21e 94
2aa47728
NC
95#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
96# ifdef I_SYS_WAIT
97# include <sys/wait.h>
98# endif
bf357333
NC
99# ifdef I_SYSUIO
100# include <sys/uio.h>
101# endif
102
103union control_un {
104 struct cmsghdr cm;
105 char control[CMSG_SPACE(sizeof(int))];
106};
107
2aa47728
NC
108#endif
109
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110#ifdef __BEOS__
111# define HZ 1000000
112#endif
113
114#ifndef HZ
115# ifdef CLK_TCK
116# define HZ CLK_TCK
117# else
118# define HZ 60
119# endif
120#endif
121
7114a2d2 122#if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
20ce7b12 123char *getenv (char *); /* Usually in <stdlib.h> */
54310121
PP
124#endif
125
acfe0abc 126static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
0cb96387 127
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128#ifdef IAMSUID
129#ifndef DOSUID
130#define DOSUID
131#endif
ae3f3efd 132#endif /* IAMSUID */
378cc40b 133
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134#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
135#ifdef DOSUID
136#undef DOSUID
137#endif
138#endif
8d063cd8 139
e6827a76 140static void
daa7d858 141S_init_tls_and_interp(PerlInterpreter *my_perl)
e6827a76 142{
27da23d5 143 dVAR;
e6827a76
NC
144 if (!PL_curinterp) {
145 PERL_SET_INTERP(my_perl);
3db8f154 146#if defined(USE_ITHREADS)
e6827a76
NC
147 INIT_THREADS;
148 ALLOC_THREAD_KEY;
149 PERL_SET_THX(my_perl);
150 OP_REFCNT_INIT;
151 MUTEX_INIT(&PL_dollarzero_mutex);
06d86050 152# endif
e6827a76
NC
153 }
154 else {
155 PERL_SET_THX(my_perl);
156 }
157}
06d86050 158
32e30700
GS
159#ifdef PERL_IMPLICIT_SYS
160PerlInterpreter *
7766f137
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161perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
162 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
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GS
163 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
164 struct IPerlDir* ipD, struct IPerlSock* ipS,
165 struct IPerlProc* ipP)
166{
167 PerlInterpreter *my_perl;
9f653bb5 168 /* Newx() needs interpreter, so call malloc() instead */
32e30700 169 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
e6827a76 170 S_init_tls_and_interp(my_perl);
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171 Zero(my_perl, 1, PerlInterpreter);
172 PL_Mem = ipM;
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173 PL_MemShared = ipMS;
174 PL_MemParse = ipMP;
32e30700
GS
175 PL_Env = ipE;
176 PL_StdIO = ipStd;
177 PL_LIO = ipLIO;
178 PL_Dir = ipD;
179 PL_Sock = ipS;
180 PL_Proc = ipP;
7766f137 181
32e30700
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182 return my_perl;
183}
184#else
954c1994
GS
185
186/*
ccfc67b7
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187=head1 Embedding Functions
188
954c1994
GS
189=for apidoc perl_alloc
190
191Allocates a new Perl interpreter. See L<perlembed>.
192
193=cut
194*/
195
93a17b20 196PerlInterpreter *
cea2e8a9 197perl_alloc(void)
79072805 198{
cea2e8a9 199 PerlInterpreter *my_perl;
79072805 200
9f653bb5 201 /* Newx() needs interpreter, so call malloc() instead */
e8ee3774 202 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 203
e6827a76 204 S_init_tls_and_interp(my_perl);
07409e01 205 return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter);
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;
9d4ba2ae 221 PERL_UNUSED_ARG(my_perl);
8990e307 222#ifdef MULTIPLICITY
54aff467 223 init_interp();
ac27b0f5 224 PL_perl_destruct_level = 1;
54aff467
GS
225#else
226 if (PL_perl_destruct_level > 0)
227 init_interp();
228#endif
33f46ff6 229 /* Init the real globals (and main thread)? */
3280af22 230 if (!PL_linestr) {
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231 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
232
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233 PL_linestr = NEWSV(65,79);
234 sv_upgrade(PL_linestr,SVt_PVIV);
79072805 235
3280af22 236 if (!SvREADONLY(&PL_sv_undef)) {
d689ffdd
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237 /* set read-only and try to insure than we wont see REFCNT==0
238 very often */
239
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240 SvREADONLY_on(&PL_sv_undef);
241 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
79072805 242
3280af22 243 sv_setpv(&PL_sv_no,PL_No);
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244 /* value lookup in void context - happens to have the side effect
245 of caching the numeric forms. */
246 SvIV(&PL_sv_no);
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247 SvNV(&PL_sv_no);
248 SvREADONLY_on(&PL_sv_no);
249 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
79072805 250
3280af22 251 sv_setpv(&PL_sv_yes,PL_Yes);
0309f36e 252 SvIV(&PL_sv_yes);
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253 SvNV(&PL_sv_yes);
254 SvREADONLY_on(&PL_sv_yes);
255 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
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MHM
256
257 SvREADONLY_on(&PL_sv_placeholder);
258 SvREFCNT(&PL_sv_placeholder) = (~(U32)0)/2;
6e72f9df 259 }
79072805 260
8aad04aa 261 PL_sighandlerp = (Sighandler_t) Perl_sighandler;
3280af22 262 PL_pidstatus = newHV();
79072805
LW
263 }
264
8bfdd7d9 265 PL_rs = newSVpvn("\n", 1);
dc92893f 266
cea2e8a9 267 init_stacks();
79072805 268
748a9306 269 init_ids();
3280af22 270 PL_lex_state = LEX_NOTPARSING;
a5f75d66 271
312caa8e 272 JMPENV_BOOTSTRAP;
f86702cc
PP
273 STATUS_ALL_SUCCESS;
274
0672f40e 275 init_i18nl10n(1);
36477c24 276 SET_NUMERIC_STANDARD();
0b5b802d 277
ab821d7f 278#if defined(LOCAL_PATCH_COUNT)
3280af22 279 PL_localpatches = local_patches; /* For possible -v */
ab821d7f
PP
280#endif
281
52853b95
GS
282#ifdef HAVE_INTERP_INTERN
283 sys_intern_init();
284#endif
285
3a1ee7e8 286 PerlIO_init(aTHX); /* Hook to IO system */
760ac839 287
3280af22
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288 PL_fdpid = newAV(); /* for remembering popen pids by fd */
289 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
24944567 290 PL_errors = newSVpvn("",0);
48c6b404 291 sv_setpvn(PERL_DEBUG_PAD(0), "", 0); /* For regex debugging. */
1f483ca1
JH
292 sv_setpvn(PERL_DEBUG_PAD(1), "", 0); /* ext/re needs these */
293 sv_setpvn(PERL_DEBUG_PAD(2), "", 0); /* even without DEBUGGING. */
1fcf4c12 294#ifdef USE_ITHREADS
13137afc
AB
295 PL_regex_padav = newAV();
296 av_push(PL_regex_padav,(SV*)newAV()); /* First entry is an array of empty elements */
297 PL_regex_pad = AvARRAY(PL_regex_padav);
1fcf4c12 298#endif
e5dd39fc 299#ifdef USE_REENTRANT_API
59bd0823 300 Perl_reentrant_init(aTHX);
e5dd39fc 301#endif
3d47000e
AB
302
303 /* Note that strtab is a rather special HV. Assumptions are made
304 about not iterating on it, and not adding tie magic to it.
305 It is properly deallocated in perl_destruct() */
306 PL_strtab = newHV();
307
3d47000e
AB
308 HvSHAREKEYS_off(PL_strtab); /* mandatory */
309 hv_ksplit(PL_strtab, 512);
310
0631ea03
AB
311#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
312 _dyld_lookup_and_bind
313 ("__environ", (unsigned long *) &environ_pointer, NULL);
314#endif /* environ */
315
2f42fcb0
JH
316#ifndef PERL_MICRO
317# ifdef USE_ENVIRON_ARRAY
0631ea03 318 PL_origenviron = environ;
2f42fcb0 319# endif
0631ea03
AB
320#endif
321
5311654c 322 /* Use sysconf(_SC_CLK_TCK) if available, if not
dbc1d986 323 * available or if the sysconf() fails, use the HZ.
27da23d5
JH
324 * BeOS has those, but returns the wrong value.
325 * The HZ if not originally defined has been by now
326 * been defined as CLK_TCK, if available. */
dbc1d986 327#if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK) && !defined(__BEOS__)
5311654c
JH
328 PL_clocktick = sysconf(_SC_CLK_TCK);
329 if (PL_clocktick <= 0)
330#endif
331 PL_clocktick = HZ;
332
081fc587
AB
333 PL_stashcache = newHV();
334
e6830b13
NC
335 PL_patchlevel = Perl_newSVpvf(aTHX_ "%d.%d.%d", (int)PERL_REVISION,
336 (int)PERL_VERSION, (int)PERL_SUBVERSION);
d7aa5382 337
27da23d5
JH
338#ifdef HAS_MMAP
339 if (!PL_mmap_page_size) {
340#if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
341 {
342 SETERRNO(0, SS_NORMAL);
343# ifdef _SC_PAGESIZE
344 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
345# else
346 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
347# endif
348 if ((long) PL_mmap_page_size < 0) {
349 if (errno) {
44f8325f 350 SV * const error = ERRSV;
27da23d5 351 (void) SvUPGRADE(error, SVt_PV);
0510663f 352 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
27da23d5
JH
353 }
354 else
355 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
356 }
357 }
358#else
359# ifdef HAS_GETPAGESIZE
360 PL_mmap_page_size = getpagesize();
361# else
362# if defined(I_SYS_PARAM) && defined(PAGESIZE)
363 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
364# endif
365# endif
366#endif
367 if (PL_mmap_page_size <= 0)
368 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
369 (IV) PL_mmap_page_size);
370 }
371#endif /* HAS_MMAP */
372
373#if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
374 PL_timesbase.tms_utime = 0;
375 PL_timesbase.tms_stime = 0;
376 PL_timesbase.tms_cutime = 0;
377 PL_timesbase.tms_cstime = 0;
378#endif
379
8990e307 380 ENTER;
79072805
LW
381}
382
954c1994 383/*
62375a60
NIS
384=for apidoc nothreadhook
385
386Stub that provides thread hook for perl_destruct when there are
387no threads.
388
389=cut
390*/
391
392int
4e9e3734 393Perl_nothreadhook(pTHX)
62375a60
NIS
394{
395 return 0;
396}
397
41e4abd8
NC
398#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
399void
400Perl_dump_sv_child(pTHX_ SV *sv)
401{
402 ssize_t got;
bf357333
NC
403 const int sock = PL_dumper_fd;
404 const int debug_fd = PerlIO_fileno(Perl_debug_log);
bf357333
NC
405 union control_un control;
406 struct msghdr msg;
808ad2d0 407 struct iovec vec[2];
bf357333 408 struct cmsghdr *cmptr;
808ad2d0
NC
409 int returned_errno;
410 unsigned char buffer[256];
41e4abd8 411
bf357333 412 if(sock == -1 || debug_fd == -1)
41e4abd8
NC
413 return;
414
415 PerlIO_flush(Perl_debug_log);
416
bf357333
NC
417 /* All these shenanigans are to pass a file descriptor over to our child for
418 it to dump out to. We can't let it hold open the file descriptor when it
419 forks, as the file descriptor it will dump to can turn out to be one end
420 of pipe that some other process will wait on for EOF. (So as it would
421 be open, the wait would be forever. */
422
423 msg.msg_control = control.control;
424 msg.msg_controllen = sizeof(control.control);
425 /* We're a connected socket so we don't need a destination */
426 msg.msg_name = NULL;
427 msg.msg_namelen = 0;
428 msg.msg_iov = vec;
808ad2d0 429 msg.msg_iovlen = 1;
bf357333
NC
430
431 cmptr = CMSG_FIRSTHDR(&msg);
432 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
433 cmptr->cmsg_level = SOL_SOCKET;
434 cmptr->cmsg_type = SCM_RIGHTS;
435 *((int *)CMSG_DATA(cmptr)) = 1;
436
437 vec[0].iov_base = (void*)&sv;
438 vec[0].iov_len = sizeof(sv);
439 got = sendmsg(sock, &msg, 0);
41e4abd8
NC
440
441 if(got < 0) {
bf357333 442 perror("Debug leaking scalars parent sendmsg failed");
41e4abd8
NC
443 abort();
444 }
bf357333
NC
445 if(got < sizeof(sv)) {
446 perror("Debug leaking scalars parent short sendmsg");
41e4abd8
NC
447 abort();
448 }
449
808ad2d0
NC
450 /* Return protocol is
451 int: errno value
452 unsigned char: length of location string (0 for empty)
453 unsigned char*: string (not terminated)
454 */
455 vec[0].iov_base = (void*)&returned_errno;
456 vec[0].iov_len = sizeof(returned_errno);
457 vec[1].iov_base = buffer;
458 vec[1].iov_len = 1;
459
460 got = readv(sock, vec, 2);
41e4abd8
NC
461
462 if(got < 0) {
463 perror("Debug leaking scalars parent read failed");
808ad2d0 464 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
465 abort();
466 }
808ad2d0 467 if(got < sizeof(returned_errno) + 1) {
41e4abd8 468 perror("Debug leaking scalars parent short read");
808ad2d0 469 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
470 abort();
471 }
472
808ad2d0
NC
473 if (*buffer) {
474 got = read(sock, buffer + 1, *buffer);
475 if(got < 0) {
476 perror("Debug leaking scalars parent read 2 failed");
477 PerlIO_flush(PerlIO_stderr());
478 abort();
479 }
480
481 if(got < *buffer) {
482 perror("Debug leaking scalars parent short read 2");
483 PerlIO_flush(PerlIO_stderr());
484 abort();
485 }
486 }
487
488 if (returned_errno || *buffer) {
489 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
490 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
491 returned_errno, strerror(returned_errno));
41e4abd8
NC
492 }
493}
494#endif
495
62375a60 496/*
954c1994
GS
497=for apidoc perl_destruct
498
499Shuts down a Perl interpreter. See L<perlembed>.
500
501=cut
502*/
503
31d77e54 504int
0cb96387 505perl_destruct(pTHXx)
79072805 506{
27da23d5 507 dVAR;
7c474504 508 volatile int destruct_level; /* 0=none, 1=full, 2=full with checks */
a0d0e21e 509 HV *hv;
2aa47728 510#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
2aa47728
NC
511 pid_t child;
512#endif
8990e307 513
9d4ba2ae
AL
514 PERL_UNUSED_ARG(my_perl);
515
7766f137
GS
516 /* wait for all pseudo-forked children to finish */
517 PERL_WAIT_FOR_CHILDREN;
518
3280af22 519 destruct_level = PL_perl_destruct_level;
4633a7c4
LW
520#ifdef DEBUGGING
521 {
9d4ba2ae
AL
522 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
523 if (s) {
e1ec3a88 524 const int i = atoi(s);
5f05dabc
PP
525 if (destruct_level < i)
526 destruct_level = i;
527 }
4633a7c4
LW
528 }
529#endif
530
27da23d5 531 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB
532 dJMPENV;
533 int x = 0;
534
535 JMPENV_PUSH(x);
1b6737cc 536 PERL_UNUSED_VAR(x);
f3faeb53
AB
537 if (PL_endav && !PL_minus_c)
538 call_list(PL_scopestack_ix, PL_endav);
539 JMPENV_POP;
26f423df 540 }
f3faeb53 541 LEAVE;
a0d0e21e
LW
542 FREETMPS;
543
e00b64d4 544 /* Need to flush since END blocks can produce output */
f13a2bc0 545 my_fflush_all();
e00b64d4 546
62375a60
NIS
547 if (CALL_FPTR(PL_threadhook)(aTHX)) {
548 /* Threads hook has vetoed further cleanup */
37038d91 549 return STATUS_EXIT;
62375a60
NIS
550 }
551
2aa47728
NC
552#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
553 if (destruct_level != 0) {
554 /* Fork here to create a child. Our child's job is to preserve the
555 state of scalars prior to destruction, so that we can instruct it
556 to dump any scalars that we later find have leaked.
557 There's no subtlety in this code - it assumes POSIX, and it doesn't
558 fail gracefully */
559 int fd[2];
560
561 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
562 perror("Debug leaking scalars socketpair failed");
563 abort();
564 }
565
566 child = fork();
567 if(child == -1) {
568 perror("Debug leaking scalars fork failed");
569 abort();
570 }
571 if (!child) {
572 /* We are the child */
3125a5a4
NC
573 const int sock = fd[1];
574 const int debug_fd = PerlIO_fileno(Perl_debug_log);
575 int f;
808ad2d0
NC
576 const char *where;
577 /* Our success message is an integer 0, and a char 0 */
578 static const char success[sizeof(int) + 1];
3125a5a4 579
2aa47728 580 close(fd[0]);
2aa47728 581
3125a5a4
NC
582 /* We need to close all other file descriptors otherwise we end up
583 with interesting hangs, where the parent closes its end of a
584 pipe, and sits waiting for (another) child to terminate. Only
585 that child never terminates, because it never gets EOF, because
bf357333
NC
586 we also have the far end of the pipe open. We even need to
587 close the debugging fd, because sometimes it happens to be one
588 end of a pipe, and a process is waiting on the other end for
589 EOF. Normally it would be closed at some point earlier in
590 destruction, but if we happen to cause the pipe to remain open,
591 EOF never occurs, and we get an infinite hang. Hence all the
592 games to pass in a file descriptor if it's actually needed. */
3125a5a4
NC
593
594 f = sysconf(_SC_OPEN_MAX);
595 if(f < 0) {
808ad2d0
NC
596 where = "sysconf failed";
597 goto abort;
3125a5a4
NC
598 }
599 while (f--) {
600 if (f == sock)
601 continue;
3125a5a4
NC
602 close(f);
603 }
604
2aa47728
NC
605 while (1) {
606 SV *target;
bf357333
NC
607 union control_un control;
608 struct msghdr msg;
609 struct iovec vec[1];
610 struct cmsghdr *cmptr;
611 ssize_t got;
612 int got_fd;
613
614 msg.msg_control = control.control;
615 msg.msg_controllen = sizeof(control.control);
616 /* We're a connected socket so we don't need a source */
617 msg.msg_name = NULL;
618 msg.msg_namelen = 0;
619 msg.msg_iov = vec;
620 msg.msg_iovlen = sizeof(vec)/sizeof(vec[0]);
621
622 vec[0].iov_base = (void*)&target;
623 vec[0].iov_len = sizeof(target);
624
625 got = recvmsg(sock, &msg, 0);
2aa47728
NC
626
627 if(got == 0)
628 break;
629 if(got < 0) {
808ad2d0
NC
630 where = "recv failed";
631 goto abort;
2aa47728
NC
632 }
633 if(got < sizeof(target)) {
808ad2d0
NC
634 where = "short recv";
635 goto abort;
2aa47728 636 }
bf357333 637
808ad2d0
NC
638 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
639 where = "no cmsg";
640 goto abort;
641 }
642 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
643 where = "wrong cmsg_len";
644 goto abort;
645 }
646 if(cmptr->cmsg_level != SOL_SOCKET) {
647 where = "wrong cmsg_level";
648 goto abort;
649 }
650 if(cmptr->cmsg_type != SCM_RIGHTS) {
651 where = "wrong cmsg_type";
652 goto abort;
653 }
bf357333
NC
654
655 got_fd = *(int*)CMSG_DATA(cmptr);
656 /* For our last little bit of trickery, put the file descriptor
657 back into Perl_debug_log, as if we never actually closed it
658 */
808ad2d0
NC
659 if(got_fd != debug_fd) {
660 if (dup2(got_fd, debug_fd) == -1) {
661 where = "dup2";
662 goto abort;
663 }
664 }
2aa47728 665 sv_dump(target);
bf357333 666
2aa47728
NC
667 PerlIO_flush(Perl_debug_log);
668
808ad2d0 669 got = write(sock, &success, sizeof(success));
2aa47728
NC
670
671 if(got < 0) {
808ad2d0
NC
672 where = "write failed";
673 goto abort;
2aa47728 674 }
808ad2d0
NC
675 if(got < sizeof(success)) {
676 where = "short write";
677 goto abort;
2aa47728
NC
678 }
679 }
680 _exit(0);
808ad2d0
NC
681 abort:
682 {
683 int send_errno = errno;
684 unsigned char length = (unsigned char) strlen(where);
685 struct iovec failure[3] = {
686 {(void*)&send_errno, sizeof(send_errno)},
687 {&length, 1},
688 {(void*)where, length}
689 };
690 int got = writev(sock, failure, 3);
691 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
692 in the parent if we try to read from the socketpair after the
693 child has exited, even if there was data to read.
694 So sleep a bit to give the parent a fighting chance of
695 reading the data. */
696 sleep(2);
697 _exit((got == -1) ? errno : 0);
698 }
bf357333 699 /* End of child. */
2aa47728 700 }
41e4abd8 701 PL_dumper_fd = fd[0];
2aa47728
NC
702 close(fd[1]);
703 }
704#endif
705
ff0cee69
PP
706 /* We must account for everything. */
707
708 /* Destroy the main CV and syntax tree */
17fbfdf6
NC
709 /* Do this now, because destroying ops can cause new SVs to be generated
710 in Perl_pad_swipe, and when running with -DDEBUG_LEAKING_SCALARS they
711 PL_curcop to point to a valid op from which the filename structure
712 member is copied. */
713 PL_curcop = &PL_compiling;
3280af22 714 if (PL_main_root) {
4e380990
DM
715 /* ensure comppad/curpad to refer to main's pad */
716 if (CvPADLIST(PL_main_cv)) {
717 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
718 }
3280af22
NIS
719 op_free(PL_main_root);
720 PL_main_root = Nullop;
a0d0e21e 721 }
3280af22
NIS
722 PL_main_start = Nullop;
723 SvREFCNT_dec(PL_main_cv);
724 PL_main_cv = Nullcv;
24d3c518 725 PL_dirty = TRUE;
ff0cee69 726
13621cfb
NIS
727 /* Tell PerlIO we are about to tear things apart in case
728 we have layers which are using resources that should
729 be cleaned up now.
730 */
731
732 PerlIO_destruct(aTHX);
733
3280af22 734 if (PL_sv_objcount) {
a0d0e21e
LW
735 /*
736 * Try to destruct global references. We do this first so that the
737 * destructors and destructees still exist. Some sv's might remain.
738 * Non-referenced objects are on their own.
739 */
a0d0e21e 740 sv_clean_objs();
bf9cdc68 741 PL_sv_objcount = 0;
a0de6cf5
DM
742 if (PL_defoutgv && !SvREFCNT(PL_defoutgv))
743 PL_defoutgv = Nullgv; /* may have been freed */
8990e307
LW
744 }
745
5cd24f17 746 /* unhook hooks which will soon be, or use, destroyed data */
3280af22
NIS
747 SvREFCNT_dec(PL_warnhook);
748 PL_warnhook = Nullsv;
749 SvREFCNT_dec(PL_diehook);
750 PL_diehook = Nullsv;
5cd24f17 751
4b556e6c 752 /* call exit list functions */
3280af22 753 while (PL_exitlistlen-- > 0)
acfe0abc 754 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 755
3280af22 756 Safefree(PL_exitlist);
4b556e6c 757
1c4916e5
CB
758 PL_exitlist = NULL;
759 PL_exitlistlen = 0;
760
a0d0e21e 761 if (destruct_level == 0){
8990e307 762
a0d0e21e 763 DEBUG_P(debprofdump());
ac27b0f5 764
56a2bab7
NIS
765#if defined(PERLIO_LAYERS)
766 /* No more IO - including error messages ! */
767 PerlIO_cleanup(aTHX);
768#endif
769
a0d0e21e 770 /* The exit() function will do everything that needs doing. */
37038d91 771 return STATUS_EXIT;
a0d0e21e 772 }
5dd60ef7 773
551a8b83 774 /* jettison our possibly duplicated environment */
4b647fb0
DM
775 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
776 * so we certainly shouldn't free it here
777 */
2f42fcb0 778#ifndef PERL_MICRO
4b647fb0 779#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
50acdf95 780 if (environ != PL_origenviron && !PL_use_safe_putenv
4efc5df6
GS
781#ifdef USE_ITHREADS
782 /* only main thread can free environ[0] contents */
783 && PL_curinterp == aTHX
784#endif
785 )
786 {
551a8b83
JH
787 I32 i;
788
789 for (i = 0; environ[i]; i++)
4b420006 790 safesysfree(environ[i]);
0631ea03 791
4b420006
JH
792 /* Must use safesysfree() when working with environ. */
793 safesysfree(environ);
551a8b83
JH
794
795 environ = PL_origenviron;
796 }
797#endif
2f42fcb0 798#endif /* !PERL_MICRO */
551a8b83 799
804ffa60
DM
800 /* reset so print() ends up where we expect */
801 setdefout(Nullgv);
802
5f8cb046
DM
803#ifdef USE_ITHREADS
804 /* the syntax tree is shared between clones
805 * so op_free(PL_main_root) only ReREFCNT_dec's
806 * REGEXPs in the parent interpreter
807 * we need to manually ReREFCNT_dec for the clones
808 */
809 {
810 I32 i = AvFILLp(PL_regex_padav) + 1;
811 SV **ary = AvARRAY(PL_regex_padav);
812
813 while (i) {
35061a7e 814 SV *resv = ary[--i];
35061a7e
DM
815
816 if (SvFLAGS(resv) & SVf_BREAK) {
577e12cc 817 /* this is PL_reg_curpm, already freed
35061a7e
DM
818 * flag is set in regexec.c:S_regtry
819 */
820 SvFLAGS(resv) &= ~SVf_BREAK;
3a1ee7e8 821 }
1cc8b4c5
AB
822 else if(SvREPADTMP(resv)) {
823 SvREPADTMP_off(resv);
824 }
a560f29b
NC
825 else if(SvIOKp(resv)) {
826 REGEXP *re = INT2PTR(REGEXP *,SvIVX(resv));
5f8cb046
DM
827 ReREFCNT_dec(re);
828 }
829 }
830 }
831 SvREFCNT_dec(PL_regex_padav);
832 PL_regex_padav = Nullav;
833 PL_regex_pad = NULL;
834#endif
835
081fc587
AB
836 SvREFCNT_dec((SV*) PL_stashcache);
837 PL_stashcache = NULL;
838
5f05dabc
PP
839 /* loosen bonds of global variables */
840
3280af22
NIS
841 if(PL_rsfp) {
842 (void)PerlIO_close(PL_rsfp);
843 PL_rsfp = Nullfp;
8ebc5c01
PP
844 }
845
846 /* Filters for program text */
3280af22
NIS
847 SvREFCNT_dec(PL_rsfp_filters);
848 PL_rsfp_filters = Nullav;
8ebc5c01
PP
849
850 /* switches */
3280af22
NIS
851 PL_preprocess = FALSE;
852 PL_minus_n = FALSE;
853 PL_minus_p = FALSE;
854 PL_minus_l = FALSE;
855 PL_minus_a = FALSE;
856 PL_minus_F = FALSE;
857 PL_doswitches = FALSE;
599cee73 858 PL_dowarn = G_WARN_OFF;
3280af22
NIS
859 PL_doextract = FALSE;
860 PL_sawampersand = FALSE; /* must save all match strings */
3280af22
NIS
861 PL_unsafe = FALSE;
862
863 Safefree(PL_inplace);
864 PL_inplace = Nullch;
a7cb1f99 865 SvREFCNT_dec(PL_patchlevel);
3280af22
NIS
866
867 if (PL_e_script) {
868 SvREFCNT_dec(PL_e_script);
869 PL_e_script = Nullsv;
8ebc5c01
PP
870 }
871
bf9cdc68
RG
872 PL_perldb = 0;
873
8ebc5c01
PP
874 /* magical thingies */
875
7889fe52
NIS
876 SvREFCNT_dec(PL_ofs_sv); /* $, */
877 PL_ofs_sv = Nullsv;
5f05dabc 878
7889fe52
NIS
879 SvREFCNT_dec(PL_ors_sv); /* $\ */
880 PL_ors_sv = Nullsv;
8ebc5c01 881
3280af22
NIS
882 SvREFCNT_dec(PL_rs); /* $/ */
883 PL_rs = Nullsv;
dc92893f 884
d33b2eba
GS
885 PL_multiline = 0; /* $* */
886 Safefree(PL_osname); /* $^O */
887 PL_osname = Nullch;
5f05dabc 888
3280af22
NIS
889 SvREFCNT_dec(PL_statname);
890 PL_statname = Nullsv;
891 PL_statgv = Nullgv;
5f05dabc 892
8ebc5c01
PP
893 /* defgv, aka *_ should be taken care of elsewhere */
894
8ebc5c01 895 /* clean up after study() */
3280af22
NIS
896 SvREFCNT_dec(PL_lastscream);
897 PL_lastscream = Nullsv;
898 Safefree(PL_screamfirst);
899 PL_screamfirst = 0;
900 Safefree(PL_screamnext);
901 PL_screamnext = 0;
8ebc5c01 902
7d5ea4e7
GS
903 /* float buffer */
904 Safefree(PL_efloatbuf);
905 PL_efloatbuf = Nullch;
906 PL_efloatsize = 0;
907
8ebc5c01 908 /* startup and shutdown function lists */
3280af22 909 SvREFCNT_dec(PL_beginav);
5a837c8f 910 SvREFCNT_dec(PL_beginav_save);
3280af22 911 SvREFCNT_dec(PL_endav);
7d30b5c4 912 SvREFCNT_dec(PL_checkav);
ece599bd 913 SvREFCNT_dec(PL_checkav_save);
3280af22
NIS
914 SvREFCNT_dec(PL_initav);
915 PL_beginav = Nullav;
5a837c8f 916 PL_beginav_save = Nullav;
3280af22 917 PL_endav = Nullav;
7d30b5c4 918 PL_checkav = Nullav;
ece599bd 919 PL_checkav_save = Nullav;
3280af22 920 PL_initav = Nullav;
5618dfe8 921
8ebc5c01 922 /* shortcuts just get cleared */
3280af22 923 PL_envgv = Nullgv;
3280af22
NIS
924 PL_incgv = Nullgv;
925 PL_hintgv = Nullgv;
926 PL_errgv = Nullgv;
927 PL_argvgv = Nullgv;
928 PL_argvoutgv = Nullgv;
929 PL_stdingv = Nullgv;
bf49b057 930 PL_stderrgv = Nullgv;
3280af22
NIS
931 PL_last_in_gv = Nullgv;
932 PL_replgv = Nullgv;
bf9cdc68
RG
933 PL_DBgv = Nullgv;
934 PL_DBline = Nullgv;
935 PL_DBsub = Nullgv;
936 PL_DBsingle = Nullsv;
937 PL_DBtrace = Nullsv;
938 PL_DBsignal = Nullsv;
939 PL_DBassertion = Nullsv;
940 PL_DBcv = Nullcv;
941 PL_dbargs = Nullav;
5c831c24 942 PL_debstash = Nullhv;
8ebc5c01 943
7a1c5554
GS
944 SvREFCNT_dec(PL_argvout_stack);
945 PL_argvout_stack = Nullav;
8ebc5c01 946
5c831c24
GS
947 SvREFCNT_dec(PL_modglobal);
948 PL_modglobal = Nullhv;
949 SvREFCNT_dec(PL_preambleav);
950 PL_preambleav = Nullav;
951 SvREFCNT_dec(PL_subname);
952 PL_subname = Nullsv;
953 SvREFCNT_dec(PL_linestr);
954 PL_linestr = Nullsv;
955 SvREFCNT_dec(PL_pidstatus);
956 PL_pidstatus = Nullhv;
957 SvREFCNT_dec(PL_toptarget);
958 PL_toptarget = Nullsv;
959 SvREFCNT_dec(PL_bodytarget);
960 PL_bodytarget = Nullsv;
961 PL_formtarget = Nullsv;
962
d33b2eba 963 /* free locale stuff */
b9582b6a 964#ifdef USE_LOCALE_COLLATE
d33b2eba
GS
965 Safefree(PL_collation_name);
966 PL_collation_name = Nullch;
b9582b6a 967#endif
d33b2eba 968
b9582b6a 969#ifdef USE_LOCALE_NUMERIC
d33b2eba
GS
970 Safefree(PL_numeric_name);
971 PL_numeric_name = Nullch;
a453c169 972 SvREFCNT_dec(PL_numeric_radix_sv);
bf9cdc68 973 PL_numeric_radix_sv = Nullsv;
b9582b6a 974#endif
d33b2eba 975
5c831c24
GS
976 /* clear utf8 character classes */
977 SvREFCNT_dec(PL_utf8_alnum);
978 SvREFCNT_dec(PL_utf8_alnumc);
979 SvREFCNT_dec(PL_utf8_ascii);
980 SvREFCNT_dec(PL_utf8_alpha);
981 SvREFCNT_dec(PL_utf8_space);
982 SvREFCNT_dec(PL_utf8_cntrl);
983 SvREFCNT_dec(PL_utf8_graph);
984 SvREFCNT_dec(PL_utf8_digit);
985 SvREFCNT_dec(PL_utf8_upper);
986 SvREFCNT_dec(PL_utf8_lower);
987 SvREFCNT_dec(PL_utf8_print);
988 SvREFCNT_dec(PL_utf8_punct);
989 SvREFCNT_dec(PL_utf8_xdigit);
990 SvREFCNT_dec(PL_utf8_mark);
991 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 992 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 993 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 994 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH
995 SvREFCNT_dec(PL_utf8_idstart);
996 SvREFCNT_dec(PL_utf8_idcont);
5c831c24
GS
997 PL_utf8_alnum = Nullsv;
998 PL_utf8_alnumc = Nullsv;
999 PL_utf8_ascii = Nullsv;
1000 PL_utf8_alpha = Nullsv;
1001 PL_utf8_space = Nullsv;
1002 PL_utf8_cntrl = Nullsv;
1003 PL_utf8_graph = Nullsv;
1004 PL_utf8_digit = Nullsv;
1005 PL_utf8_upper = Nullsv;
1006 PL_utf8_lower = Nullsv;
1007 PL_utf8_print = Nullsv;
1008 PL_utf8_punct = Nullsv;
1009 PL_utf8_xdigit = Nullsv;
1010 PL_utf8_mark = Nullsv;
1011 PL_utf8_toupper = Nullsv;
1012 PL_utf8_totitle = Nullsv;
1013 PL_utf8_tolower = Nullsv;
b4e400f9 1014 PL_utf8_tofold = Nullsv;
82686b01
JH
1015 PL_utf8_idstart = Nullsv;
1016 PL_utf8_idcont = Nullsv;
5c831c24 1017
971a9dd3
GS
1018 if (!specialWARN(PL_compiling.cop_warnings))
1019 SvREFCNT_dec(PL_compiling.cop_warnings);
5c831c24 1020 PL_compiling.cop_warnings = Nullsv;
ac27b0f5
NIS
1021 if (!specialCopIO(PL_compiling.cop_io))
1022 SvREFCNT_dec(PL_compiling.cop_io);
1023 PL_compiling.cop_io = Nullsv;
05ec9bb3
NIS
1024 CopFILE_free(&PL_compiling);
1025 CopSTASH_free(&PL_compiling);
5c831c24 1026
a0d0e21e 1027 /* Prepare to destruct main symbol table. */
5f05dabc 1028
3280af22
NIS
1029 hv = PL_defstash;
1030 PL_defstash = 0;
a0d0e21e 1031 SvREFCNT_dec(hv);
5c831c24
GS
1032 SvREFCNT_dec(PL_curstname);
1033 PL_curstname = Nullsv;
a0d0e21e 1034
5a844595
GS
1035 /* clear queued errors */
1036 SvREFCNT_dec(PL_errors);
1037 PL_errors = Nullsv;
1038
a0d0e21e 1039 FREETMPS;
0453d815 1040 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
3280af22 1041 if (PL_scopestack_ix != 0)
9014280d 1042 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
0453d815 1043 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
3280af22
NIS
1044 (long)PL_scopestack_ix);
1045 if (PL_savestack_ix != 0)
9014280d 1046 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
0453d815 1047 "Unbalanced saves: %ld more saves than restores\n",
3280af22
NIS
1048 (long)PL_savestack_ix);
1049 if (PL_tmps_floor != -1)
9014280d 1050 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
3280af22 1051 (long)PL_tmps_floor + 1);
a0d0e21e 1052 if (cxstack_ix != -1)
9014280d 1053 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
ff0cee69 1054 (long)cxstack_ix + 1);
a0d0e21e 1055 }
8990e307
LW
1056
1057 /* Now absolutely destruct everything, somehow or other, loops or no. */
d33b2eba 1058 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
3280af22 1059 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
5226ed68
JH
1060
1061 /* the 2 is for PL_fdpid and PL_strtab */
1062 while (PL_sv_count > 2 && sv_clean_all())
1063 ;
1064
d33b2eba
GS
1065 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
1066 SvFLAGS(PL_fdpid) |= SVt_PVAV;
3280af22
NIS
1067 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
1068 SvFLAGS(PL_strtab) |= SVt_PVHV;
d33b2eba 1069
d4777f27
GS
1070 AvREAL_off(PL_fdpid); /* no surviving entries */
1071 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
d33b2eba
GS
1072 PL_fdpid = Nullav;
1073
6c644e78
GS
1074#ifdef HAVE_INTERP_INTERN
1075 sys_intern_clear();
1076#endif
1077
6e72f9df
PP
1078 /* Destruct the global string table. */
1079 {
1080 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1081 * so that sv_free() won't fail on them.
80459961
NC
1082 * Now that the global string table is using a single hunk of memory
1083 * for both HE and HEK, we either need to explicitly unshare it the
1084 * correct way, or actually free things here.
6e72f9df 1085 */
80459961
NC
1086 I32 riter = 0;
1087 const I32 max = HvMAX(PL_strtab);
44f8325f 1088 HE ** const array = HvARRAY(PL_strtab);
80459961
NC
1089 HE *hent = array[0];
1090
6e72f9df 1091 for (;;) {
0453d815 1092 if (hent && ckWARN_d(WARN_INTERNAL)) {
44f8325f 1093 HE * const next = HeNEXT(hent);
9014280d 1094 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
44f8325f
AL
1095 "Unbalanced string table refcount: (%ld) for \"%s\"",
1096 (long)(HeVAL(hent) - Nullsv), HeKEY(hent));
80459961
NC
1097 Safefree(hent);
1098 hent = next;
6e72f9df
PP
1099 }
1100 if (!hent) {
1101 if (++riter > max)
1102 break;
1103 hent = array[riter];
1104 }
1105 }
80459961
NC
1106
1107 Safefree(array);
1108 HvARRAY(PL_strtab) = 0;
1109 HvTOTALKEYS(PL_strtab) = 0;
1110 HvFILL(PL_strtab) = 0;
6e72f9df 1111 }
3280af22 1112 SvREFCNT_dec(PL_strtab);
6e72f9df 1113
e652bb2f 1114#ifdef USE_ITHREADS
c21d1a0f 1115 /* free the pointer tables used for cloning */
a0739874 1116 ptr_table_free(PL_ptr_table);
bf9cdc68 1117 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1118#endif
a0739874 1119
d33b2eba
GS
1120 /* free special SVs */
1121
1122 SvREFCNT(&PL_sv_yes) = 0;
1123 sv_clear(&PL_sv_yes);
1124 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1125 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
1126
1127 SvREFCNT(&PL_sv_no) = 0;
1128 sv_clear(&PL_sv_no);
1129 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1130 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1131
9f375a43
DM
1132 {
1133 int i;
1134 for (i=0; i<=2; i++) {
1135 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1136 sv_clear(PERL_DEBUG_PAD(i));
1137 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1138 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1139 }
1140 }
1141
0453d815 1142 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1143 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1144
eba0f806
DM
1145#ifdef DEBUG_LEAKING_SCALARS
1146 if (PL_sv_count != 0) {
1147 SV* sva;
1148 SV* sv;
1149 register SV* svend;
1150
1151 for (sva = PL_sv_arenaroot; sva; sva = (SV*)SvANY(sva)) {
1152 svend = &sva[SvREFCNT(sva)];
1153 for (sv = sva + 1; sv < svend; ++sv) {
1154 if (SvTYPE(sv) != SVTYPEMASK) {
a548cda8 1155 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1156 " flags=0x%"UVxf
fd0854ff
DM
1157 " refcnt=%"UVuf pTHX__FORMAT "\n"
1158 "\tallocated at %s:%d %s %s%s\n",
1159 sv, sv->sv_flags, sv->sv_refcnt pTHX__VALUE,
1160 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1161 sv->sv_debug_line,
1162 sv->sv_debug_inpad ? "for" : "by",
1163 sv->sv_debug_optype ?
1164 PL_op_name[sv->sv_debug_optype]: "(none)",
1165 sv->sv_debug_cloned ? " (cloned)" : ""
1166 );
2aa47728 1167#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1168 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1169#endif
eba0f806
DM
1170 }
1171 }
1172 }
1173 }
2aa47728
NC
1174#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1175 {
1176 int status;
1177 fd_set rset;
1178 /* Wait for up to 4 seconds for child to terminate.
1179 This seems to be the least effort way of timing out on reaping
1180 its exit status. */
1181 struct timeval waitfor = {4, 0};
41e4abd8 1182 int sock = PL_dumper_fd;
2aa47728
NC
1183
1184 shutdown(sock, 1);
1185 FD_ZERO(&rset);
1186 FD_SET(sock, &rset);
1187 select(sock + 1, &rset, NULL, NULL, &waitfor);
1188 waitpid(child, &status, WNOHANG);
1189 close(sock);
1190 }
1191#endif
eba0f806 1192#endif
bf9cdc68 1193 PL_sv_count = 0;
eba0f806
DM
1194
1195
56a2bab7 1196#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS
1197 /* No more IO - including error messages ! */
1198 PerlIO_cleanup(aTHX);
1199#endif
1200
9f4bd222
NIS
1201 /* sv_undef needs to stay immortal until after PerlIO_cleanup
1202 as currently layers use it rather than Nullsv as a marker
1203 for no arg - and will try and SvREFCNT_dec it.
1204 */
1205 SvREFCNT(&PL_sv_undef) = 0;
1206 SvREADONLY_off(&PL_sv_undef);
1207
3280af22 1208 Safefree(PL_origfilename);
bf9cdc68 1209 PL_origfilename = Nullch;
3280af22 1210 Safefree(PL_reg_start_tmp);
bf9cdc68
RG
1211 PL_reg_start_tmp = (char**)NULL;
1212 PL_reg_start_tmpl = 0;
43c5f42d 1213 Safefree(PL_reg_curpm);
82ba1be6 1214 Safefree(PL_reg_poscache);
dd28f7bb 1215 free_tied_hv_pool();
3280af22 1216 Safefree(PL_op_mask);
cf36064f 1217 Safefree(PL_psig_ptr);
bf9cdc68 1218 PL_psig_ptr = (SV**)NULL;
cf36064f 1219 Safefree(PL_psig_name);
bf9cdc68 1220 PL_psig_name = (SV**)NULL;
2c2666fc 1221 Safefree(PL_bitcount);
bf9cdc68 1222 PL_bitcount = Nullch;
ce08f86c 1223 Safefree(PL_psig_pend);
bf9cdc68
RG
1224 PL_psig_pend = (int*)NULL;
1225 PL_formfeed = Nullsv;
6e72f9df 1226 nuke_stacks();
bf9cdc68
RG
1227 PL_tainting = FALSE;
1228 PL_taint_warn = FALSE;
3280af22 1229 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
bf9cdc68 1230 PL_debug = 0;
ac27b0f5 1231
a0d0e21e 1232 DEBUG_P(debprofdump());
d33b2eba 1233
e5dd39fc 1234#ifdef USE_REENTRANT_API
10bc17b6 1235 Perl_reentrant_free(aTHX);
e5dd39fc
AB
1236#endif
1237
612f20c3
GS
1238 sv_free_arenas();
1239
fc36a67e
PP
1240 /* As the absolutely last thing, free the non-arena SV for mess() */
1241
3280af22 1242 if (PL_mess_sv) {
f350b448
NC
1243 /* we know that type == SVt_PVMG */
1244
9c63abab 1245 /* it could have accumulated taint magic */
f350b448
NC
1246 MAGIC* mg;
1247 MAGIC* moremagic;
1248 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1249 moremagic = mg->mg_moremagic;
1250 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1251 && mg->mg_len >= 0)
1252 Safefree(mg->mg_ptr);
1253 Safefree(mg);
9c63abab 1254 }
f350b448 1255
fc36a67e 1256 /* we know that type >= SVt_PV */
8bd4d4c5 1257 SvPV_free(PL_mess_sv);
3280af22
NIS
1258 Safefree(SvANY(PL_mess_sv));
1259 Safefree(PL_mess_sv);
1260 PL_mess_sv = Nullsv;
fc36a67e 1261 }
37038d91 1262 return STATUS_EXIT;
79072805
LW
1263}
1264
954c1994
GS
1265/*
1266=for apidoc perl_free
1267
1268Releases a Perl interpreter. See L<perlembed>.
1269
1270=cut
1271*/
1272
79072805 1273void
0cb96387 1274perl_free(pTHXx)
79072805 1275{
acfe0abc 1276#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1277# if defined(PERL_IMPLICIT_SYS)
acfe0abc
GS
1278# ifdef NETWARE
1279 void *host = nw_internal_host;
1280# else
1281 void *host = w32_internal_host;
1282# endif
ce3e5b80 1283 PerlMem_free(aTHXx);
acfe0abc 1284# ifdef NETWARE
011f1a1a 1285 nw_delete_internal_host(host);
acfe0abc
GS
1286# else
1287 win32_delete_internal_host(host);
1288# endif
1c0ca838
GS
1289# else
1290 PerlMem_free(aTHXx);
1291# endif
acfe0abc
GS
1292#else
1293 PerlMem_free(aTHXx);
76e3520e 1294#endif
79072805
LW
1295}
1296
aebd1ac7
GA
1297#if defined(USE_5005THREADS) || defined(USE_ITHREADS)
1298/* provide destructors to clean up the thread key when libperl is unloaded */
1299#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1300
110d3f98 1301#if defined(__hpux) && __ux_version > 1020 && !defined(__GNUC__)
aebd1ac7
GA
1302#pragma fini "perl_fini"
1303#endif
1304
0dbb1585
AL
1305static void
1306#if defined(__GNUC__)
1307__attribute__((destructor))
aebd1ac7 1308#endif
de009b76 1309perl_fini(void)
aebd1ac7 1310{
27da23d5 1311 dVAR;
aebd1ac7
GA
1312 if (PL_curinterp)
1313 FREE_THREAD_KEY;
1314}
1315
1316#endif /* WIN32 */
1317#endif /* THREADS */
1318
4b556e6c 1319void
864dbfa3 1320Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1321{
3280af22
NIS
1322 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1323 PL_exitlist[PL_exitlistlen].fn = fn;
1324 PL_exitlist[PL_exitlistlen].ptr = ptr;
1325 ++PL_exitlistlen;
4b556e6c
JD
1326}
1327
56cf6df8
RGS
1328#ifdef HAS_PROCSELFEXE
1329/* This is a function so that we don't hold on to MAXPATHLEN
1330 bytes of stack longer than necessary
1331 */
1332STATIC void
e1ec3a88 1333S_procself_val(pTHX_ SV *sv, const char *arg0)
56cf6df8
RGS
1334{
1335 char buf[MAXPATHLEN];
1336 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1337
1338 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1339 includes a spurious NUL which will cause $^X to fail in system
1340 or backticks (this will prevent extensions from being built and
1341 many tests from working). readlink is not meant to add a NUL.
1342 Normal readlink works fine.
1343 */
1344 if (len > 0 && buf[len-1] == '\0') {
1345 len--;
1346 }
1347
1348 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1349 returning the text "unknown" from the readlink rather than the path
1350 to the executable (or returning an error from the readlink). Any valid
1351 path has a '/' in it somewhere, so use that to validate the result.
1352 See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1353 */
1354 if (len > 0 && memchr(buf, '/', len)) {
1355 sv_setpvn(sv,buf,len);
1356 }
1357 else {
1358 sv_setpv(sv,arg0);
1359 }
1360}
1361#endif /* HAS_PROCSELFEXE */
b7975bdd
NC
1362
1363STATIC void
1364S_set_caret_X(pTHX) {
1365 GV* tmpgv = gv_fetchpv("\030",TRUE, SVt_PV); /* $^X */
1366 if (tmpgv) {
1367#ifdef HAS_PROCSELFEXE
1368 S_procself_val(aTHX_ GvSV(tmpgv), PL_origargv[0]);
1369#else
1370#ifdef OS2
c69033f2 1371 sv_setpv(GvSVn(tmpgv), os2_execname(aTHX));
b7975bdd 1372#else
c69033f2 1373 sv_setpv(GvSVn(tmpgv),PL_origargv[0]);
b7975bdd
NC
1374#endif
1375#endif
1376 }
1377}
1378
954c1994
GS
1379/*
1380=for apidoc perl_parse
1381
1382Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1383
1384=cut
1385*/
1386
79072805 1387int
0cb96387 1388perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1389{
27da23d5 1390 dVAR;
6224f72b 1391 I32 oldscope;
6224f72b 1392 int ret;
db36c5a1 1393 dJMPENV;
8d063cd8 1394
9d4ba2ae
AL
1395 PERL_UNUSED_VAR(my_perl);
1396
a687059c
LW
1397#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
1398#ifdef IAMSUID
1399#undef IAMSUID
cea2e8a9 1400 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
a687059c 1401setuid perl scripts securely.\n");
ae3f3efd 1402#endif /* IAMSUID */
a687059c
LW
1403#endif
1404
b0891165
JH
1405#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
1406 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
103dd899 1407 * This MUST be done before any hash stores or fetches take place.
008fb0c0
NC
1408 * If you set PL_rehash_seed (and assumedly also PL_rehash_seed_set)
1409 * yourself, it is your responsibility to provide a good random seed!
830b38bd 1410 * You can also define PERL_HASH_SEED in compile time, see hv.h. */
008fb0c0
NC
1411 if (!PL_rehash_seed_set)
1412 PL_rehash_seed = get_hash_seed();
b0891165 1413 {
9d4ba2ae 1414 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
bed60192 1415
1b6737cc
AL
1416 if (s && (atoi(s) == 1))
1417 PerlIO_printf(Perl_debug_log, "HASH_SEED = %"UVuf"\n", PL_rehash_seed);
b0891165
JH
1418 }
1419#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1420
3280af22 1421 PL_origargc = argc;
e2975953 1422 PL_origargv = argv;
a0d0e21e 1423
54bfe034 1424 {
3cb9023d
JH
1425 /* Set PL_origalen be the sum of the contiguous argv[]
1426 * elements plus the size of the env in case that it is
e9137a8e 1427 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH
1428 * as the maximum modifiable length of $0. In the worst case
1429 * the area we are able to modify is limited to the size of
43c32782 1430 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1431 * --jhi */
e1ec3a88 1432 const char *s = NULL;
54bfe034 1433 int i;
1b6737cc 1434 const UV mask =
7d8e7db3 1435 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
43c32782 1436 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1437 const UV aligned =
43c32782
JH
1438 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1439
1440 /* See if all the arguments are contiguous in memory. Note
1441 * that 'contiguous' is a loose term because some platforms
1442 * align the argv[] and the envp[]. If the arguments look
1443 * like non-aligned, assume that they are 'strictly' or
1444 * 'traditionally' contiguous. If the arguments look like
1445 * aligned, we just check that they are within aligned
1446 * PTRSIZE bytes. As long as no system has something bizarre
1447 * like the argv[] interleaved with some other data, we are
1448 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH
1449 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1450 while (*s) s++;
1451 for (i = 1; i < PL_origargc; i++) {
1452 if ((PL_origargv[i] == s + 1
43c32782 1453#ifdef OS2
c8941eeb 1454 || PL_origargv[i] == s + 2
43c32782 1455#endif
c8941eeb
JH
1456 )
1457 ||
1458 (aligned &&
1459 (PL_origargv[i] > s &&
1460 PL_origargv[i] <=
1461 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1462 )
1463 {
1464 s = PL_origargv[i];
1465 while (*s) s++;
1466 }
1467 else
1468 break;
54bfe034 1469 }
54bfe034 1470 }
3cb9023d 1471 /* Can we grab env area too to be used as the area for $0? */
43c32782
JH
1472 if (PL_origenviron) {
1473 if ((PL_origenviron[0] == s + 1
1474#ifdef OS2
1475 || (PL_origenviron[0] == s + 9 && (s += 8))
1476#endif
1477 )
1478 ||
1479 (aligned &&
1480 (PL_origenviron[0] > s &&
1481 PL_origenviron[0] <=
1482 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1483 )
1484 {
1485#ifndef OS2
1486 s = PL_origenviron[0];
1487 while (*s) s++;
1488#endif
1489 my_setenv("NoNe SuCh", Nullch);
1490 /* Force copy of environment. */
1491 for (i = 1; PL_origenviron[i]; i++) {
1492 if (PL_origenviron[i] == s + 1
1493 ||
1494 (aligned &&
1495 (PL_origenviron[i] > s &&
1496 PL_origenviron[i] <=
1497 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1498 )
1499 {
1500 s = PL_origenviron[i];
1501 while (*s) s++;
1502 }
1503 else
1504 break;
54bfe034 1505 }
43c32782 1506 }
54bfe034 1507 }
284e1220 1508 PL_origalen = s - PL_origargv[0] + 1;
54bfe034
JH
1509 }
1510
3280af22 1511 if (PL_do_undump) {
a0d0e21e
LW
1512
1513 /* Come here if running an undumped a.out. */
1514
3280af22
NIS
1515 PL_origfilename = savepv(argv[0]);
1516 PL_do_undump = FALSE;
a0d0e21e 1517 cxstack_ix = -1; /* start label stack again */
748a9306 1518 init_ids();
b7975bdd
NC
1519 assert (!PL_tainted);
1520 TAINT;
1521 S_set_caret_X(aTHX);
1522 TAINT_NOT;
a0d0e21e
LW
1523 init_postdump_symbols(argc,argv,env);
1524 return 0;
1525 }
1526
3280af22 1527 if (PL_main_root) {
3280af22
NIS
1528 op_free(PL_main_root);
1529 PL_main_root = Nullop;
ff0cee69 1530 }
3280af22
NIS
1531 PL_main_start = Nullop;
1532 SvREFCNT_dec(PL_main_cv);
1533 PL_main_cv = Nullcv;
79072805 1534
3280af22
NIS
1535 time(&PL_basetime);
1536 oldscope = PL_scopestack_ix;
599cee73 1537 PL_dowarn = G_WARN_OFF;
f86702cc 1538
14dd3ad8 1539 JMPENV_PUSH(ret);
6224f72b 1540 switch (ret) {
312caa8e 1541 case 0:
14dd3ad8 1542 parse_body(env,xsinit);
7d30b5c4
GS
1543 if (PL_checkav)
1544 call_list(oldscope, PL_checkav);
14dd3ad8
GS
1545 ret = 0;
1546 break;
6224f72b
GS
1547 case 1:
1548 STATUS_ALL_FAILURE;
1549 /* FALL THROUGH */
1550 case 2:
1551 /* my_exit() was called */
3280af22 1552 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1553 LEAVE;
1554 FREETMPS;
3280af22 1555 PL_curstash = PL_defstash;
7d30b5c4
GS
1556 if (PL_checkav)
1557 call_list(oldscope, PL_checkav);
37038d91 1558 ret = STATUS_EXIT;
14dd3ad8 1559 break;
6224f72b 1560 case 3:
bf49b057 1561 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1562 ret = 1;
1563 break;
6224f72b 1564 }
14dd3ad8
GS
1565 JMPENV_POP;
1566 return ret;
1567}
1568
312caa8e 1569STATIC void *
14dd3ad8 1570S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1571{
27da23d5 1572 dVAR;
312caa8e 1573 int argc = PL_origargc;
8f42b153 1574 char **argv = PL_origargv;
e1ec3a88 1575 const char *scriptname = NULL;
312caa8e 1576 VOL bool dosearch = FALSE;
e1ec3a88 1577 const char *validarg = "";
312caa8e
CS
1578 register SV *sv;
1579 register char *s;
e1ec3a88 1580 const char *cddir = Nullch;
ab019eaa 1581#ifdef USE_SITECUSTOMIZE
20ef40cf 1582 bool minus_f = FALSE;
ab019eaa 1583#endif
312caa8e 1584
ae3f3efd
PS
1585 PL_fdscript = -1;
1586 PL_suidscript = -1;
3280af22 1587 sv_setpvn(PL_linestr,"",0);
79cb57f6 1588 sv = newSVpvn("",0); /* first used for -I flags */
6224f72b
GS
1589 SAVEFREESV(sv);
1590 init_main_stash();
54310121 1591
6224f72b
GS
1592 for (argc--,argv++; argc > 0; argc--,argv++) {
1593 if (argv[0][0] != '-' || !argv[0][1])
1594 break;
1595#ifdef DOSUID
1596 if (*validarg)
1597 validarg = " PHOOEY ";
1598 else
1599 validarg = argv[0];
ae3f3efd
PS
1600 /*
1601 * Can we rely on the kernel to start scripts with argv[1] set to
1602 * contain all #! line switches (the whole line)? (argv[0] is set to
1603 * the interpreter name, argv[2] to the script name; argv[3] and
1604 * above may contain other arguments.)
1605 */
13281fa4 1606#endif
6224f72b
GS
1607 s = argv[0]+1;
1608 reswitch:
1609 switch (*s) {
729a02f2 1610 case 'C':
1d5472a9
GS
1611#ifndef PERL_STRICT_CR
1612 case '\r':
1613#endif
6224f72b
GS
1614 case ' ':
1615 case '0':
1616 case 'F':
1617 case 'a':
1618 case 'c':
1619 case 'd':
1620 case 'D':
1621 case 'h':
1622 case 'i':
1623 case 'l':
1624 case 'M':
1625 case 'm':
1626 case 'n':
1627 case 'p':
1628 case 's':
1629 case 'u':
1630 case 'U':
1631 case 'v':
599cee73
PM
1632 case 'W':
1633 case 'X':
6224f72b 1634 case 'w':
06492da6 1635 case 'A':
155aba94 1636 if ((s = moreswitches(s)))
6224f72b
GS
1637 goto reswitch;
1638 break;
33b78306 1639
1dbad523 1640 case 't':
22f7c9c9 1641 CHECK_MALLOC_TOO_LATE_FOR('t');
317ea90d
MS
1642 if( !PL_tainting ) {
1643 PL_taint_warn = TRUE;
1644 PL_tainting = TRUE;
1645 }
1646 s++;
1647 goto reswitch;
6224f72b 1648 case 'T':
22f7c9c9 1649 CHECK_MALLOC_TOO_LATE_FOR('T');
3280af22 1650 PL_tainting = TRUE;
317ea90d 1651 PL_taint_warn = FALSE;
6224f72b
GS
1652 s++;
1653 goto reswitch;
f86702cc 1654
6224f72b 1655 case 'e':
bf4acbe4
GS
1656#ifdef MACOS_TRADITIONAL
1657 /* ignore -e for Dev:Pseudo argument */
1658 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
e55ac0fa 1659 break;
bf4acbe4 1660#endif
ae3f3efd 1661 forbid_setid("-e");
3280af22 1662 if (!PL_e_script) {
79cb57f6 1663 PL_e_script = newSVpvn("",0);
0cb96387 1664 filter_add(read_e_script, NULL);
6224f72b
GS
1665 }
1666 if (*++s)
3280af22 1667 sv_catpv(PL_e_script, s);
6224f72b 1668 else if (argv[1]) {
3280af22 1669 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1670 argc--,argv++;
1671 }
1672 else
cea2e8a9 1673 Perl_croak(aTHX_ "No code specified for -e");
3280af22 1674 sv_catpv(PL_e_script, "\n");
6224f72b 1675 break;
afe37c7d 1676
20ef40cf 1677 case 'f':
f5542d3a 1678#ifdef USE_SITECUSTOMIZE
20ef40cf 1679 minus_f = TRUE;
f5542d3a 1680#endif
20ef40cf
GA
1681 s++;
1682 goto reswitch;
1683
6224f72b
GS
1684 case 'I': /* -I handled both here and in moreswitches() */
1685 forbid_setid("-I");
1686 if (!*++s && (s=argv[1]) != Nullch) {
1687 argc--,argv++;
1688 }
6224f72b 1689 if (s && *s) {
0df16ed7 1690 STRLEN len = strlen(s);
aec46f14 1691 const char * const p = savepvn(s, len);
88fe16b2 1692 incpush(p, TRUE, TRUE, FALSE, FALSE);
0df16ed7
GS
1693 sv_catpvn(sv, "-I", 2);
1694 sv_catpvn(sv, p, len);
1695 sv_catpvn(sv, " ", 1);
6224f72b 1696 Safefree(p);
0df16ed7
GS
1697 }
1698 else
a67e862a 1699 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b
GS
1700 break;
1701 case 'P':
1702 forbid_setid("-P");
3280af22 1703 PL_preprocess = TRUE;
6224f72b
GS
1704 s++;
1705 goto reswitch;
1706 case 'S':
1707 forbid_setid("-S");
1708 dosearch = TRUE;
1709 s++;
1710 goto reswitch;
1711 case 'V':
7edfd0ef
NC
1712 {
1713 SV *opts_prog;
1714
1715 if (!PL_preambleav)
1716 PL_preambleav = newAV();
1717 av_push(PL_preambleav,
1718 newSVpv("use Config;",0));
1719 if (*++s != ':') {
1720 STRLEN opts;
1721
1722 opts_prog = newSVpv("print Config::myconfig(),",0);
6224f72b 1723#ifdef VMS
7edfd0ef 1724 sv_catpv(opts_prog,"\"\\nCharacteristics of this PERLSHR image: \\n\",");
6224f72b 1725#else
7edfd0ef 1726 sv_catpv(opts_prog,"\"\\nCharacteristics of this binary (from libperl): \\n\",");
6224f72b 1727#endif
7edfd0ef 1728 opts = SvCUR(opts_prog);
efcaa95b 1729
9cd7d3f2 1730 Perl_sv_catpv(aTHX_ opts_prog,"\" Compile-time options:"
6224f72b 1731# ifdef DEBUGGING
e2e4dbf1 1732 " DEBUGGING"
6224f72b 1733# endif
85e1fcb9 1734# ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
e2e4dbf1 1735 " DEBUG_LEAKING_SCALARS_FORK_DUMP"
85e1fcb9
SH
1736# endif
1737# ifdef FAKE_THREADS
e2e4dbf1 1738 " FAKE_THREADS"
85e1fcb9 1739# endif
6224f72b 1740# ifdef MULTIPLICITY
e2e4dbf1 1741 " MULTIPLICITY"
6224f72b 1742# endif
85e1fcb9 1743# ifdef MYMALLOC
e2e4dbf1 1744 " MYMALLOC"
85e1fcb9
SH
1745# endif
1746# ifdef PERL_DONT_CREATE_GVSV
e2e4dbf1 1747 " PERL_DONT_CREATE_GVSV"
85e1fcb9
SH
1748# endif
1749# ifdef PERL_GLOBAL_STRUCT
e2e4dbf1 1750 " PERL_GLOBAL_STRUCT"
85e1fcb9
SH
1751# endif
1752# ifdef PERL_IMPLICIT_CONTEXT
e2e4dbf1 1753 " PERL_IMPLICIT_CONTEXT"
85e1fcb9
SH
1754# endif
1755# ifdef PERL_IMPLICIT_SYS
e2e4dbf1 1756 " PERL_IMPLICIT_SYS"
85e1fcb9
SH
1757# endif
1758# ifdef PERL_MALLOC_WRAP
e2e4dbf1 1759 " PERL_MALLOC_WRAP"
85e1fcb9
SH
1760# endif
1761# ifdef PERL_NEED_APPCTX
e2e4dbf1 1762 " PERL_NEED_APPCTX"
85e1fcb9
SH
1763# endif
1764# ifdef PERL_NEED_TIMESBASE
e2e4dbf1 1765 " PERL_NEED_TIMESBASE"
85e1fcb9
SH
1766# endif
1767# ifdef PERL_OLD_COPY_ON_WRITE
e2e4dbf1 1768 " PERL_OLD_COPY_ON_WRITE"
85e1fcb9 1769# endif
417cd4a8
SP
1770# ifdef PERL_USE_SAFE_PUTENV
1771 " PERL_USE_SAFE_PUTENV"
1772# endif
85e1fcb9 1773# ifdef PL_OP_SLAB_ALLOC
e2e4dbf1 1774 " PL_OP_SLAB_ALLOC"
85e1fcb9 1775# endif
a0158404
NC
1776# ifdef SPRINTF_RETURNS_STRLEN
1777 " SPRINTF_RETURNS_STRLEN"
1778# endif
85e1fcb9 1779# ifdef THREADS_HAVE_PIDS
e2e4dbf1 1780 " THREADS_HAVE_PIDS"
85e1fcb9 1781# endif
4d1ff10f 1782# ifdef USE_5005THREADS
e2e4dbf1 1783 " USE_5005THREADS"
b363f7ed 1784# endif
85e1fcb9 1785# ifdef USE_64_BIT_ALL
e2e4dbf1 1786 " USE_64_BIT_ALL"
ac5e8965 1787# endif
10cc9d2a 1788# ifdef USE_64_BIT_INT
e2e4dbf1 1789 " USE_64_BIT_INT"
10cc9d2a 1790# endif
85e1fcb9 1791# ifdef USE_ITHREADS
e2e4dbf1 1792 " USE_ITHREADS"
85e1fcb9
SH
1793# endif
1794# ifdef USE_LARGE_FILES
e2e4dbf1 1795 " USE_LARGE_FILES"
ac5e8965
JH
1796# endif
1797# ifdef USE_LONG_DOUBLE
e2e4dbf1 1798 " USE_LONG_DOUBLE"
ac5e8965 1799# endif
85e1fcb9 1800# ifdef USE_PERLIO
e2e4dbf1 1801 " USE_PERLIO"
53430762 1802# endif
85e1fcb9 1803# ifdef USE_REENTRANT_API
e2e4dbf1 1804 " USE_REENTRANT_API"
85e1fcb9
SH
1805# endif
1806# ifdef USE_SFIO
e2e4dbf1 1807 " USE_SFIO"
ac5e8965 1808# endif
20ef40cf 1809# ifdef USE_SITECUSTOMIZE
e2e4dbf1 1810 " USE_SITECUSTOMIZE"
20ef40cf 1811# endif
85e1fcb9 1812# ifdef USE_SOCKS
e2e4dbf1 1813 " USE_SOCKS"
b363f7ed 1814# endif
e2e4dbf1 1815 );
efcaa95b 1816
7edfd0ef
NC
1817 while (SvCUR(opts_prog) > opts+76) {
1818 /* find last space after "options: " and before col 76
1819 */
efcaa95b 1820
7edfd0ef
NC
1821 const char *space;
1822 char *pv = SvPV_nolen(opts_prog);
1823 const char c = pv[opts+76];
1824 pv[opts+76] = '\0';
1825 space = strrchr(pv+opts+26, ' ');
1826 pv[opts+76] = c;
1827 if (!space) break; /* "Can't happen" */
efcaa95b 1828
7edfd0ef 1829 /* break the line before that space */
efcaa95b 1830
7edfd0ef
NC
1831 opts = space - pv;
1832 sv_insert(opts_prog, opts, 0,
1833 "\\n ", 25);
1834 }
efcaa95b 1835
7edfd0ef 1836 sv_catpv(opts_prog,"\\n\",");
b363f7ed 1837
6224f72b 1838#if defined(LOCAL_PATCH_COUNT)
7edfd0ef
NC
1839 if (LOCAL_PATCH_COUNT > 0) {
1840 int i;
1841 sv_catpv(opts_prog,
1842 "\" Locally applied patches:\\n\",");
1843 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1844 if (PL_localpatches[i])
1845 Perl_sv_catpvf(aTHX_ opts_prog,"q%c\t%s\n%c,",
1846 0, PL_localpatches[i], 0);
1847 }
6224f72b 1848 }
6224f72b 1849#endif
7edfd0ef
NC
1850 Perl_sv_catpvf(aTHX_ opts_prog,
1851 "\" Built under %s\\n\"",OSNAME);
6224f72b
GS
1852#ifdef __DATE__
1853# ifdef __TIME__
7edfd0ef
NC
1854 Perl_sv_catpvf(aTHX_ opts_prog,
1855 ",\" Compiled at %s %s\\n\"",__DATE__,
1856 __TIME__);
6224f72b 1857# else
7edfd0ef
NC
1858 Perl_sv_catpvf(aTHX_ opts_prog,",\" Compiled on %s\\n\"",
1859 __DATE__);
6224f72b
GS
1860# endif
1861#endif
7edfd0ef
NC
1862 sv_catpv(opts_prog, "; $\"=\"\\n \"; "
1863 "@env = map { \"$_=\\\"$ENV{$_}\\\"\" } "
1864 "sort grep {/^PERL/} keys %ENV; ");
69fcd688 1865#ifdef __CYGWIN__
7edfd0ef
NC
1866 sv_catpv(opts_prog,
1867 "push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
69fcd688 1868#endif
7edfd0ef
NC
1869 sv_catpv(opts_prog,
1870 "print \" \\%ENV:\\n @env\\n\" if @env;"
1871 "print \" \\@INC:\\n @INC\\n\";");
1872 }
1873 else {
1874 ++s;
1875 opts_prog = Perl_newSVpvf(aTHX_
1876 "Config::config_vars(qw%c%s%c)",
1877 0, s, 0);
1878 s += strlen(s);
1879 }
1880 av_push(PL_preambleav, opts_prog);
1881 /* don't look for script or read stdin */
1882 scriptname = BIT_BUCKET;
1883 goto reswitch;
6224f72b 1884 }
6224f72b 1885 case 'x':
3280af22 1886 PL_doextract = TRUE;
6224f72b
GS
1887 s++;
1888 if (*s)
f4c556ac 1889 cddir = s;
6224f72b
GS
1890 break;
1891 case 0:
1892 break;
1893 case '-':
1894 if (!*++s || isSPACE(*s)) {
1895 argc--,argv++;
1896 goto switch_end;
1897 }
1898 /* catch use of gnu style long options */
1899 if (strEQ(s, "version")) {
dd374669 1900 s = (char *)"v";
6224f72b
GS
1901 goto reswitch;
1902 }
1903 if (strEQ(s, "help")) {
dd374669 1904 s = (char *)"h";
6224f72b
GS
1905 goto reswitch;
1906 }
1907 s--;
1908 /* FALL THROUGH */
1909 default:
cea2e8a9 1910 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
1911 }
1912 }
6224f72b 1913 switch_end:
54310121 1914
f675dbe5
CB
1915 if (
1916#ifndef SECURE_INTERNAL_GETENV
1917 !PL_tainting &&
1918#endif
cf756827 1919 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1920 {
e1ec3a88 1921 const char *popt = s;
74288ac8
GS
1922 while (isSPACE(*s))
1923 s++;
317ea90d 1924 if (*s == '-' && *(s+1) == 'T') {
22f7c9c9 1925 CHECK_MALLOC_TOO_LATE_FOR('T');
74288ac8 1926 PL_tainting = TRUE;
317ea90d
MS
1927 PL_taint_warn = FALSE;
1928 }
74288ac8 1929 else {
cf756827 1930 char *popt_copy = Nullch;
74288ac8 1931 while (s && *s) {
4ea8f8fb 1932 char *d;
74288ac8
GS
1933 while (isSPACE(*s))
1934 s++;
1935 if (*s == '-') {
1936 s++;
1937 if (isSPACE(*s))
1938 continue;
1939 }
4ea8f8fb 1940 d = s;
74288ac8
GS
1941 if (!*s)
1942 break;
e4af53b0 1943 if (!strchr("CDIMUdmtwA", *s))
cea2e8a9 1944 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
1945 while (++s && *s) {
1946 if (isSPACE(*s)) {
cf756827
GS
1947 if (!popt_copy) {
1948 popt_copy = SvPVX(sv_2mortal(newSVpv(popt,0)));
1949 s = popt_copy + (s - popt);
1950 d = popt_copy + (d - popt);
1951 }
4ea8f8fb
MS
1952 *s++ = '\0';
1953 break;
1954 }
1955 }
1c4db469 1956 if (*d == 't') {
317ea90d
MS
1957 if( !PL_tainting ) {
1958 PL_taint_warn = TRUE;
1959 PL_tainting = TRUE;
1960 }
1c4db469
RGS
1961 } else {
1962 moreswitches(d);
1963 }
6224f72b 1964 }
6224f72b
GS
1965 }
1966 }
a0d0e21e 1967
20ef40cf
GA
1968#ifdef USE_SITECUSTOMIZE
1969 if (!minus_f) {
1970 if (!PL_preambleav)
1971 PL_preambleav = newAV();
1972 av_unshift(PL_preambleav, 1);
1973 (void)av_store(PL_preambleav, 0, Perl_newSVpvf(aTHX_ "BEGIN { do '%s/sitecustomize.pl' }", SITELIB_EXP));
1974 }
1975#endif
1976
317ea90d
MS
1977 if (PL_taint_warn && PL_dowarn != G_WARN_ALL_OFF) {
1978 PL_compiling.cop_warnings = newSVpvn(WARN_TAINTstring, WARNsize);
1979 }
1980
6224f72b
GS
1981 if (!scriptname)
1982 scriptname = argv[0];
3280af22 1983 if (PL_e_script) {
6224f72b
GS
1984 argc++,argv--;
1985 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1986 }
1987 else if (scriptname == Nullch) {
1988#ifdef MSDOS
1989 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1990 moreswitches("h");
1991#endif
1992 scriptname = "-";
1993 }
1994
b7975bdd
NC
1995 /* Set $^X early so that it can be used for relocatable paths in @INC */
1996 assert (!PL_tainted);
1997 TAINT;
1998 S_set_caret_X(aTHX);
1999 TAINT_NOT;
6224f72b
GS
2000 init_perllib();
2001
c5cccb17 2002 open_script(scriptname,dosearch,sv);
6224f72b 2003
c5cccb17 2004 validate_suid(validarg, scriptname);
6224f72b 2005
64ca3a65 2006#ifndef PERL_MICRO
0b5b802d
GS
2007#if defined(SIGCHLD) || defined(SIGCLD)
2008 {
2009#ifndef SIGCHLD
2010# define SIGCHLD SIGCLD
2011#endif
2012 Sighandler_t sigstate = rsignal_state(SIGCHLD);
8aad04aa 2013 if (sigstate == (Sighandler_t) SIG_IGN) {
0b5b802d 2014 if (ckWARN(WARN_SIGNAL))
9014280d 2015 Perl_warner(aTHX_ packWARN(WARN_SIGNAL),
0b5b802d
GS
2016 "Can't ignore signal CHLD, forcing to default");
2017 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2018 }
2019 }
2020#endif
64ca3a65 2021#endif
0b5b802d 2022
bf4acbe4
GS
2023#ifdef MACOS_TRADITIONAL
2024 if (PL_doextract || gMacPerl_AlwaysExtract) {
2025#else
f4c556ac 2026 if (PL_doextract) {
bf4acbe4 2027#endif
6224f72b 2028 find_beginning();
dd374669 2029 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
f4c556ac
GS
2030 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2031
2032 }
6224f72b 2033
3280af22
NIS
2034 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
2035 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
2036 CvUNIQUE_on(PL_compcv);
2037
dd2155a4 2038 CvPADLIST(PL_compcv) = pad_new(0);
4d1ff10f 2039#ifdef USE_5005THREADS
533c011a 2040 CvOWNER(PL_compcv) = 0;
a02a5408 2041 Newx(CvMUTEXP(PL_compcv), 1, perl_mutex);
533c011a 2042 MUTEX_INIT(CvMUTEXP(PL_compcv));
4d1ff10f 2043#endif /* USE_5005THREADS */
6224f72b 2044
0c4f7ff0 2045 boot_core_PerlIO();
6224f72b 2046 boot_core_UNIVERSAL();
09bef843 2047 boot_core_xsutils();
6224f72b
GS
2048
2049 if (xsinit)
acfe0abc 2050 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2051#ifndef PERL_MICRO
ed79a026 2052#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
c5be433b 2053 init_os_extras();
6224f72b 2054#endif
64ca3a65 2055#endif
6224f72b 2056
29209bc5 2057#ifdef USE_SOCKS
1b9c9cf5
DH
2058# ifdef HAS_SOCKS5_INIT
2059 socks5_init(argv[0]);
2060# else
29209bc5 2061 SOCKSinit(argv[0]);
1b9c9cf5 2062# endif
ac27b0f5 2063#endif
29209bc5 2064
6224f72b
GS
2065 init_predump_symbols();
2066 /* init_postdump_symbols not currently designed to be called */
2067 /* more than once (ENV isn't cleared first, for example) */
2068 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2069 if (!PL_do_undump)
6224f72b
GS
2070 init_postdump_symbols(argc,argv,env);
2071
27da23d5
JH
2072 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2073 * or explicitly in some platforms.
085a54d9 2074 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2075 * look like the user wants to use UTF-8. */
a0fd4948 2076#if defined(__SYMBIAN32__)
27da23d5
JH
2077 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2078#endif
06e66572
JH
2079 if (PL_unicode) {
2080 /* Requires init_predump_symbols(). */
a05d7ebb 2081 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2082 IO* io;
2083 PerlIO* fp;
2084 SV* sv;
2085
a05d7ebb 2086 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2087 * and the default open disciplines. */
a05d7ebb
JH
2088 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2089 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2090 (fp = IoIFP(io)))
2091 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2092 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2093 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2094 (fp = IoOFP(io)))
2095 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2096 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2097 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2098 (fp = IoOFP(io)))
2099 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2100 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
2101 (sv = GvSV(gv_fetchpv("\017PEN", TRUE, SVt_PV)))) {
2102 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2103 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2104 if (in) {
2105 if (out)
2106 sv_setpvn(sv, ":utf8\0:utf8", 11);
2107 else
2108 sv_setpvn(sv, ":utf8\0", 6);
2109 }
2110 else if (out)
2111 sv_setpvn(sv, "\0:utf8", 6);
2112 SvSETMAGIC(sv);
2113 }
b310b053
JH
2114 }
2115 }
2116
4ffa73a3
JH
2117 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2118 if (strEQ(s, "unsafe"))
2119 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2120 else if (strEQ(s, "safe"))
2121 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2122 else
2123 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2124 }
2125
6224f72b
GS
2126 init_lexer();
2127
2128 /* now parse the script */
2129
93189314 2130 SETERRNO(0,SS_NORMAL);
3280af22 2131 PL_error_count = 0;
bf4acbe4
GS
2132#ifdef MACOS_TRADITIONAL
2133 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
2134 if (PL_minus_c)
2135 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
2136 else {
2137 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
2138 MacPerl_MPWFileName(PL_origfilename));
2139 }
2140 }
2141#else
3280af22
NIS
2142 if (yyparse() || PL_error_count) {
2143 if (PL_minus_c)
cea2e8a9 2144 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2145 else {
cea2e8a9 2146 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2147 PL_origfilename);
6224f72b
GS
2148 }
2149 }
bf4acbe4 2150#endif
57843af0 2151 CopLINE_set(PL_curcop, 0);
3280af22
NIS
2152 PL_curstash = PL_defstash;
2153 PL_preprocess = FALSE;
2154 if (PL_e_script) {
2155 SvREFCNT_dec(PL_e_script);
2156 PL_e_script = Nullsv;
6224f72b
GS
2157 }
2158
3280af22 2159 if (PL_do_undump)
6224f72b
GS
2160 my_unexec();
2161
57843af0
GS
2162 if (isWARN_ONCE) {
2163 SAVECOPFILE(PL_curcop);
2164 SAVECOPLINE(PL_curcop);
3280af22 2165 gv_check(PL_defstash);
57843af0 2166 }
6224f72b
GS
2167
2168 LEAVE;
2169 FREETMPS;
2170
2171#ifdef MYMALLOC
2172 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2173 dump_mstats("after compilation:");
2174#endif
2175
2176 ENTER;
3280af22 2177 PL_restartop = 0;
312caa8e 2178 return NULL;
6224f72b
GS
2179}
2180
954c1994
GS
2181/*
2182=for apidoc perl_run
2183
2184Tells a Perl interpreter to run. See L<perlembed>.
2185
2186=cut
2187*/
2188
6224f72b 2189int
0cb96387 2190perl_run(pTHXx)
6224f72b 2191{
6224f72b 2192 I32 oldscope;
14dd3ad8 2193 int ret = 0;
db36c5a1 2194 dJMPENV;
6224f72b 2195
9d4ba2ae
AL
2196 PERL_UNUSED_ARG(my_perl);
2197
3280af22 2198 oldscope = PL_scopestack_ix;
96e176bf
CL
2199#ifdef VMS
2200 VMSISH_HUSHED = 0;
2201#endif
6224f72b 2202
14dd3ad8 2203 JMPENV_PUSH(ret);
6224f72b
GS
2204 switch (ret) {
2205 case 1:
2206 cxstack_ix = -1; /* start context stack again */
312caa8e 2207 goto redo_body;
14dd3ad8 2208 case 0: /* normal completion */
14dd3ad8
GS
2209 redo_body:
2210 run_body(oldscope);
14dd3ad8
GS
2211 /* FALL THROUGH */
2212 case 2: /* my_exit() */
3280af22 2213 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2214 LEAVE;
2215 FREETMPS;
3280af22 2216 PL_curstash = PL_defstash;
3a1ee7e8 2217 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
31d77e54
AB
2218 PL_endav && !PL_minus_c)
2219 call_list(oldscope, PL_endav);
6224f72b
GS
2220#ifdef MYMALLOC
2221 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2222 dump_mstats("after execution: ");
2223#endif
37038d91 2224 ret = STATUS_EXIT;
14dd3ad8 2225 break;
6224f72b 2226 case 3:
312caa8e
CS
2227 if (PL_restartop) {
2228 POPSTACK_TO(PL_mainstack);
2229 goto redo_body;
6224f72b 2230 }
bf49b057 2231 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 2232 FREETMPS;
14dd3ad8
GS
2233 ret = 1;
2234 break;
6224f72b
GS
2235 }
2236
14dd3ad8
GS
2237 JMPENV_POP;
2238 return ret;
312caa8e
CS
2239}
2240
14dd3ad8 2241
dd374669 2242STATIC void
14dd3ad8
GS
2243S_run_body(pTHX_ I32 oldscope)
2244{
6224f72b 2245 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 2246 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 2247
3280af22 2248 if (!PL_restartop) {
6224f72b 2249 DEBUG_x(dump_all());
cf2782cd 2250#ifdef DEBUGGING
ecae49c0
NC
2251 if (!DEBUG_q_TEST)
2252 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2253#endif
b900a521
JH
2254 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
2255 PTR2UV(thr)));
6224f72b 2256
3280af22 2257 if (PL_minus_c) {
bf4acbe4 2258#ifdef MACOS_TRADITIONAL
e69a2255
JH
2259 PerlIO_printf(Perl_error_log, "%s%s syntax OK\n",
2260 (gMacPerl_ErrorFormat ? "# " : ""),
2261 MacPerl_MPWFileName(PL_origfilename));
bf4acbe4 2262#else
bf49b057 2263 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
bf4acbe4 2264#endif
6224f72b
GS
2265 my_exit(0);
2266 }
3280af22 2267 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 2268 sv_setiv(PL_DBsingle, 1);
3280af22
NIS
2269 if (PL_initav)
2270 call_list(oldscope, PL_initav);
6224f72b
GS
2271 }
2272
2273 /* do it */
2274
3280af22 2275 if (PL_restartop) {
533c011a 2276 PL_op = PL_restartop;
3280af22 2277 PL_restartop = 0;
cea2e8a9 2278 CALLRUNOPS(aTHX);
6224f72b 2279 }
3280af22
NIS
2280 else if (PL_main_start) {
2281 CvDEPTH(PL_main_cv) = 1;
533c011a 2282 PL_op = PL_main_start;
cea2e8a9 2283 CALLRUNOPS(aTHX);
6224f72b 2284 }
f6b3007c
JH
2285 my_exit(0);
2286 /* NOTREACHED */
6224f72b
GS
2287}
2288
954c1994 2289/*
ccfc67b7
JH
2290=head1 SV Manipulation Functions
2291
954c1994
GS
2292=for apidoc p||get_sv
2293
2294Returns the SV of the specified Perl scalar. If C<create> is set and the
2295Perl variable does not exist then it will be created. If C<create> is not
2296set and the variable does not exist then NULL is returned.
2297
2298=cut
2299*/
2300
6224f72b 2301SV*
864dbfa3 2302Perl_get_sv(pTHX_ const char *name, I32 create)
6224f72b
GS
2303{
2304 GV *gv;
4d1ff10f 2305#ifdef USE_5005THREADS
6224f72b
GS
2306 if (name[1] == '\0' && !isALPHA(name[0])) {
2307 PADOFFSET tmp = find_threadsv(name);
411caa50 2308 if (tmp != NOT_IN_PAD)
6224f72b 2309 return THREADSV(tmp);
6224f72b 2310 }
4d1ff10f 2311#endif /* USE_5005THREADS */
6224f72b
GS
2312 gv = gv_fetchpv(name, create, SVt_PV);
2313 if (gv)
2314 return GvSV(gv);
2315 return Nullsv;
2316}
2317
954c1994 2318/*
ccfc67b7
JH
2319=head1 Array Manipulation Functions
2320
954c1994
GS
2321=for apidoc p||get_av
2322
2323Returns the AV of the specified Perl array. If C<create> is set and the
2324Perl variable does not exist then it will be created. If C<create> is not
2325set and the variable does not exist then NULL is returned.
2326
2327=cut
2328*/
2329
6224f72b 2330AV*
864dbfa3 2331Perl_get_av(pTHX_ const char *name, I32 create)
6224f72b
GS
2332{
2333 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
2334 if (create)
2335 return GvAVn(gv);
2336 if (gv)
2337 return GvAV(gv);
2338 return Nullav;
2339}
2340
954c1994 2341/*
ccfc67b7
JH
2342=head1 Hash Manipulation Functions
2343
954c1994
GS
2344=for apidoc p||get_hv
2345
2346Returns the HV of the specified Perl hash. If C<create> is set and the
2347Perl variable does not exist then it will be created. If C<create> is not
2348set and the variable does not exist then NULL is returned.
2349
2350=cut
2351*/
2352
6224f72b 2353HV*
864dbfa3 2354Perl_get_hv(pTHX_ const char *name, I32 create)
6224f72b 2355{
890ce7af 2356 GV* const gv = gv_fetchpv(name, create, SVt_PVHV);
a0d0e21e
LW
2357 if (create)
2358 return GvHVn(gv);
2359 if (gv)
2360 return GvHV(gv);
2361 return Nullhv;
2362}
2363
954c1994 2364/*
ccfc67b7
JH
2365=head1 CV Manipulation Functions
2366
954c1994
GS
2367=for apidoc p||get_cv
2368
2369Returns the CV of the specified Perl subroutine. If C<create> is set and
2370the Perl subroutine does not exist then it will be declared (which has the
2371same effect as saying C<sub name;>). If C<create> is not set and the
2372subroutine does not exist then NULL is returned.
2373
2374=cut
2375*/
2376
a0d0e21e 2377CV*
864dbfa3 2378Perl_get_cv(pTHX_ const char *name, I32 create)
a0d0e21e
LW
2379{
2380 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
b099ddc0 2381 /* XXX unsafe for threads if eval_owner isn't held */
f6ec51f7
GS
2382 /* XXX this is probably not what they think they're getting.
2383 * It has the same effect as "sub name;", i.e. just a forward
2384 * declaration! */
8ebc5c01 2385 if (create && !GvCVu(gv))
774d564b 2386 return newSUB(start_subparse(FALSE, 0),
a0d0e21e 2387 newSVOP(OP_CONST, 0, newSVpv(name,0)),
4633a7c4 2388 Nullop,
a0d0e21e
LW
2389 Nullop);
2390 if (gv)
8ebc5c01 2391 return GvCVu(gv);
a0d0e21e
LW
2392 return Nullcv;
2393}
2394
79072805
LW
2395/* Be sure to refetch the stack pointer after calling these routines. */
2396
954c1994 2397/*
ccfc67b7
JH
2398
2399=head1 Callback Functions
2400
954c1994
GS
2401=for apidoc p||call_argv
2402
2403Performs a callback to the specified Perl sub. See L<perlcall>.
2404
2405=cut
2406*/
2407
a0d0e21e 2408I32
8f42b153 2409Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 2410
8ac85365
NIS
2411 /* See G_* flags in cop.h */
2412 /* null terminated arg list */
8990e307 2413{
a0d0e21e 2414 dSP;
8990e307 2415
924508f0 2416 PUSHMARK(SP);
a0d0e21e 2417 if (argv) {
8990e307 2418 while (*argv) {
a0d0e21e 2419 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
8990e307
LW
2420 argv++;
2421 }
a0d0e21e 2422 PUTBACK;
8990e307 2423 }
864dbfa3 2424 return call_pv(sub_name, flags);
8990e307
LW
2425}
2426
954c1994
GS
2427/*
2428=for apidoc p||call_pv
2429
2430Performs a callback to the specified Perl sub. See L<perlcall>.
2431
2432=cut
2433*/
2434
a0d0e21e 2435I32
864dbfa3 2436Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2437 /* name of the subroutine */
2438 /* See G_* flags in cop.h */
a0d0e21e 2439{
864dbfa3 2440 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
a0d0e21e
LW
2441}
2442
954c1994
GS
2443/*
2444=for apidoc p||call_method
2445
2446Performs a callback to the specified Perl method. The blessed object must
2447be on the stack. See L<perlcall>.
2448
2449=cut
2450*/
2451
a0d0e21e 2452I32
864dbfa3 2453Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2454 /* name of the subroutine */
2455 /* See G_* flags in cop.h */
a0d0e21e 2456{
968b3946 2457 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
a0d0e21e
LW
2458}
2459
2460/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2461/*
2462=for apidoc p||call_sv
2463
2464Performs a callback to the Perl sub whose name is in the SV. See
2465L<perlcall>.
2466
2467=cut
2468*/
2469
a0d0e21e 2470I32
864dbfa3 2471Perl_call_sv(pTHX_ SV *sv, I32 flags)
8ac85365 2472 /* See G_* flags in cop.h */
a0d0e21e 2473{
27da23d5 2474 dVAR; dSP;
a0d0e21e 2475 LOGOP myop; /* fake syntax tree node */
968b3946 2476 UNOP method_op;
aa689395 2477 I32 oldmark;
13689cfe 2478 volatile I32 retval = 0;
a0d0e21e 2479 I32 oldscope;
54310121 2480 bool oldcatch = CATCH_GET;
6224f72b 2481 int ret;
533c011a 2482 OP* oldop = PL_op;
db36c5a1 2483 dJMPENV;
1e422769 2484
a0d0e21e
LW
2485 if (flags & G_DISCARD) {
2486 ENTER;
2487 SAVETMPS;
2488 }
2489
aa689395 2490 Zero(&myop, 1, LOGOP);
54310121 2491 myop.op_next = Nullop;
f51d4af5 2492 if (!(flags & G_NOARGS))
aa689395 2493 myop.op_flags |= OPf_STACKED;
54310121
PP
2494 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
2495 (flags & G_ARRAY) ? OPf_WANT_LIST :
2496 OPf_WANT_SCALAR);
462e5cf6 2497 SAVEOP();
533c011a 2498 PL_op = (OP*)&myop;
aa689395 2499
3280af22
NIS
2500 EXTEND(PL_stack_sp, 1);
2501 *++PL_stack_sp = sv;
aa689395 2502 oldmark = TOPMARK;
3280af22 2503 oldscope = PL_scopestack_ix;
a0d0e21e 2504
3280af22 2505 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2506 /* Handle first BEGIN of -d. */
3280af22 2507 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2508 /* Try harder, since this may have been a sighandler, thus
2509 * curstash may be meaningless. */
3280af22 2510 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
491527d0 2511 && !(flags & G_NODEBUG))
533c011a 2512 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 2513
968b3946
GS
2514 if (flags & G_METHOD) {
2515 Zero(&method_op, 1, UNOP);
2516 method_op.op_next = PL_op;
2517 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2518 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
f39d0b86 2519 PL_op = (OP*)&method_op;
968b3946
GS
2520 }
2521
312caa8e 2522 if (!(flags & G_EVAL)) {
0cdb2077 2523 CATCH_SET(TRUE);
14dd3ad8 2524 call_body((OP*)&myop, FALSE);
312caa8e 2525 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2526 CATCH_SET(oldcatch);
312caa8e
CS
2527 }
2528 else {
d78bda3d 2529 myop.op_other = (OP*)&myop;
3280af22 2530 PL_markstack_ptr--;
4633a7c4
LW
2531 /* we're trying to emulate pp_entertry() here */
2532 {
c09156bb 2533 register PERL_CONTEXT *cx;
f54cb97a 2534 const I32 gimme = GIMME_V;
ac27b0f5 2535
4633a7c4
LW
2536 ENTER;
2537 SAVETMPS;
ac27b0f5 2538
1d76a5c3 2539 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
4633a7c4 2540 PUSHEVAL(cx, 0, 0);
533c011a 2541 PL_eval_root = PL_op; /* Only needed so that goto works right. */
ac27b0f5 2542
faef0170 2543 PL_in_eval = EVAL_INEVAL;
4633a7c4 2544 if (flags & G_KEEPERR)
faef0170 2545 PL_in_eval |= EVAL_KEEPERR;
4633a7c4 2546 else
c69006e4 2547 sv_setpvn(ERRSV,"",0);
4633a7c4 2548 }
3280af22 2549 PL_markstack_ptr++;
a0d0e21e 2550
14dd3ad8 2551 JMPENV_PUSH(ret);
6224f72b
GS
2552 switch (ret) {
2553 case 0:
14dd3ad8
GS
2554 redo_body:
2555 call_body((OP*)&myop, FALSE);
312caa8e
CS
2556 retval = PL_stack_sp - (PL_stack_base + oldmark);
2557 if (!(flags & G_KEEPERR))
c69006e4 2558 sv_setpvn(ERRSV,"",0);
a0d0e21e 2559 break;
6224f72b 2560 case 1:
f86702cc 2561 STATUS_ALL_FAILURE;
a0d0e21e 2562 /* FALL THROUGH */
6224f72b 2563 case 2:
a0d0e21e 2564 /* my_exit() was called */
3280af22 2565 PL_curstash = PL_defstash;
a0d0e21e 2566 FREETMPS;
14dd3ad8 2567 JMPENV_POP;
cc3604b1 2568 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2569 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2570 my_exit_jump();
a0d0e21e 2571 /* NOTREACHED */
6224f72b 2572 case 3:
3280af22 2573 if (PL_restartop) {
533c011a 2574 PL_op = PL_restartop;
3280af22 2575 PL_restartop = 0;
312caa8e 2576 goto redo_body;
a0d0e21e 2577 }
3280af22 2578 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2579 if (flags & G_ARRAY)
2580 retval = 0;
2581 else {
2582 retval = 1;
3280af22 2583 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2584 }
312caa8e 2585 break;
a0d0e21e 2586 }
a0d0e21e 2587
3280af22 2588 if (PL_scopestack_ix > oldscope) {
a0a2876f
LW
2589 SV **newsp;
2590 PMOP *newpm;
2591 I32 gimme;
c09156bb 2592 register PERL_CONTEXT *cx;
a0a2876f
LW
2593 I32 optype;
2594
2595 POPBLOCK(cx,newpm);
2596 POPEVAL(cx);
3280af22 2597 PL_curpm = newpm;
a0a2876f 2598 LEAVE;
9d4ba2ae
AL
2599 PERL_UNUSED_VAR(newsp);
2600 PERL_UNUSED_VAR(gimme);
2601 PERL_UNUSED_VAR(optype);
a0d0e21e 2602 }
14dd3ad8 2603 JMPENV_POP;
a0d0e21e 2604 }
1e422769 2605
a0d0e21e 2606 if (flags & G_DISCARD) {
3280af22 2607 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2608 retval = 0;
2609 FREETMPS;
2610 LEAVE;
2611 }
533c011a 2612 PL_op = oldop;
a0d0e21e
LW
2613 return retval;
2614}
2615
312caa8e 2616STATIC void
dd374669 2617S_call_body(pTHX_ const OP *myop, bool is_eval)
312caa8e 2618{
312caa8e
CS
2619 if (PL_op == myop) {
2620 if (is_eval)
f807eda9 2621 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
312caa8e 2622 else
f807eda9 2623 PL_op = Perl_pp_entersub(aTHX); /* this does */
312caa8e
CS
2624 }
2625 if (PL_op)
cea2e8a9 2626 CALLRUNOPS(aTHX);
312caa8e
CS
2627}
2628
6e72f9df 2629/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2630
954c1994
GS
2631/*
2632=for apidoc p||eval_sv
2633
2634Tells Perl to C<eval> the string in the SV.
2635
2636=cut
2637*/
2638
a0d0e21e 2639I32
864dbfa3 2640Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2641
8ac85365 2642 /* See G_* flags in cop.h */
a0d0e21e 2643{
924508f0 2644 dSP;
a0d0e21e 2645 UNOP myop; /* fake syntax tree node */
8fa7f367 2646 volatile I32 oldmark = SP - PL_stack_base;
13689cfe 2647 volatile I32 retval = 0;
6224f72b 2648 int ret;
533c011a 2649 OP* oldop = PL_op;
db36c5a1 2650 dJMPENV;
84902520 2651
4633a7c4
LW
2652 if (flags & G_DISCARD) {
2653 ENTER;
2654 SAVETMPS;
2655 }
2656
462e5cf6 2657 SAVEOP();
533c011a
NIS
2658 PL_op = (OP*)&myop;
2659 Zero(PL_op, 1, UNOP);
3280af22
NIS
2660 EXTEND(PL_stack_sp, 1);
2661 *++PL_stack_sp = sv;
79072805 2662
4633a7c4
LW
2663 if (!(flags & G_NOARGS))
2664 myop.op_flags = OPf_STACKED;
79072805 2665 myop.op_next = Nullop;
6e72f9df 2666 myop.op_type = OP_ENTEREVAL;
54310121
PP
2667 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
2668 (flags & G_ARRAY) ? OPf_WANT_LIST :
2669 OPf_WANT_SCALAR);
6e72f9df
PP
2670 if (flags & G_KEEPERR)
2671 myop.op_flags |= OPf_SPECIAL;
4633a7c4 2672
dedbcade
DM
2673 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2674 * before a PUSHEVAL, which corrupts the stack after a croak */
2675 TAINT_PROPER("eval_sv()");
2676
14dd3ad8 2677 JMPENV_PUSH(ret);
6224f72b
GS
2678 switch (ret) {
2679 case 0:
14dd3ad8
GS
2680 redo_body:
2681 call_body((OP*)&myop,TRUE);
312caa8e
CS
2682 retval = PL_stack_sp - (PL_stack_base + oldmark);
2683 if (!(flags & G_KEEPERR))
c69006e4 2684 sv_setpvn(ERRSV,"",0);
4633a7c4 2685 break;
6224f72b 2686 case 1:
f86702cc 2687 STATUS_ALL_FAILURE;
4633a7c4 2688 /* FALL THROUGH */
6224f72b 2689 case 2:
4633a7c4 2690 /* my_exit() was called */
3280af22 2691 PL_curstash = PL_defstash;
4633a7c4 2692 FREETMPS;
14dd3ad8 2693 JMPENV_POP;
cc3604b1 2694 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2695 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2696 my_exit_jump();
4633a7c4 2697 /* NOTREACHED */
6224f72b 2698 case 3:
3280af22 2699 if (PL_restartop) {
533c011a 2700 PL_op = PL_restartop;
3280af22 2701 PL_restartop = 0;
312caa8e 2702 goto redo_body;
4633a7c4 2703 }
3280af22 2704 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2705 if (flags & G_ARRAY)
2706 retval = 0;
2707 else {
2708 retval = 1;
3280af22 2709 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2710 }
312caa8e 2711 break;
4633a7c4
LW
2712 }
2713
14dd3ad8 2714 JMPENV_POP;
4633a7c4 2715 if (flags & G_DISCARD) {
3280af22 2716 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2717 retval = 0;
2718 FREETMPS;
2719 LEAVE;
2720 }
533c011a 2721 PL_op = oldop;
4633a7c4
LW
2722 return retval;
2723}
2724
954c1994
GS
2725/*
2726=for apidoc p||eval_pv
2727
2728Tells Perl to C<eval> the given string and return an SV* result.
2729
2730=cut
2731*/
2732
137443ea 2733SV*
864dbfa3 2734Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea
PP
2735{
2736 dSP;
2737 SV* sv = newSVpv(p, 0);
2738
864dbfa3 2739 eval_sv(sv, G_SCALAR);
137443ea
PP
2740 SvREFCNT_dec(sv);
2741
2742 SPAGAIN;
2743 sv = POPs;
2744 PUTBACK;
2745
2d8e6c8d 2746 if (croak_on_error && SvTRUE(ERRSV)) {
0510663f 2747 Perl_croak(aTHX_ SvPVx_nolen_const(ERRSV));
2d8e6c8d 2748 }
137443ea
PP
2749
2750 return sv;
2751}
2752
4633a7c4
LW
2753/* Require a module. */
2754
954c1994 2755/*
ccfc67b7
JH
2756=head1 Embedding Functions
2757
954c1994
GS
2758=for apidoc p||require_pv
2759
7d3fb230
BS
2760Tells Perl to C<require> the file named by the string argument. It is
2761analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2762implemented that way; consider using load_module instead.
954c1994 2763
7d3fb230 2764=cut */
954c1994 2765
4633a7c4 2766void
864dbfa3 2767Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2768{
d3acc0f7
JP
2769 SV* sv;
2770 dSP;
e788e7d3 2771 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7 2772 PUTBACK;
be41e5d9
NC
2773 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2774 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7
JP
2775 SPAGAIN;
2776 POPSTACK;
79072805
LW
2777}
2778
79072805 2779void
e1ec3a88 2780Perl_magicname(pTHX_ const char *sym, const char *name, I32 namlen)
79072805
LW
2781{
2782 register GV *gv;
2783
155aba94 2784 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
14befaf4 2785 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
79072805
LW
2786}
2787
76e3520e 2788STATIC void
e1ec3a88 2789S_usage(pTHX_ const char *name) /* XXX move this out into a module ? */
4633a7c4 2790{
ab821d7f 2791 /* This message really ought to be max 23 lines.
75c72d73 2792 * Removed -h because the user already knows that option. Others? */
fb73857a 2793
27da23d5 2794 static const char * const usage_msg[] = {
aefc56c5
SF
2795"-0[octal] specify record separator (\\0, if no argument)",
2796"-A[mod][=pattern] activate all/given assertions",
2797"-a autosplit mode with -n or -p (splits $_ into @F)",
2798"-C[number/list] enables the listed Unicode features",
2799"-c check syntax only (runs BEGIN and CHECK blocks)",
2800"-d[:debugger] run program under debugger",
2801"-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2802"-e program one line of program (several -e's allowed, omit programfile)",
aefc56c5 2803"-f don't do $sitelib/sitecustomize.pl at startup",
aefc56c5
SF
2804"-F/pattern/ split() pattern for -a switch (//'s are optional)",
2805"-i[extension] edit <> files in place (makes backup if extension supplied)",
2806"-Idirectory specify @INC/#include directory (several -I's allowed)",
2807"-l[octal] enable line ending processing, specifies line terminator",
2808"-[mM][-]module execute \"use/no module...\" before executing program",
2809"-n assume \"while (<>) { ... }\" loop around program",
2810"-p assume loop like -n but print line also, like sed",
2811"-P run program through C preprocessor before compilation",
2812"-s enable rudimentary parsing for switches after programfile",
2813"-S look for programfile using PATH environment variable",
2814"-t enable tainting warnings",
2815"-T enable tainting checks",
2816"-u dump core after parsing program",
2817"-U allow unsafe operations",
2818"-v print version, subversion (includes VERY IMPORTANT perl info)",
2819"-V[:variable] print configuration summary (or a single Config.pm variable)",
2820"-w enable many useful warnings (RECOMMENDED)",
2821"-W enable all warnings",
2822"-x[directory] strip off text before #!perl line and perhaps cd to directory",
2823"-X disable all warnings",
fb73857a
PP
2824"\n",
2825NULL
2826};
27da23d5 2827 const char * const *p = usage_msg;
fb73857a 2828
b0e47665
GS
2829 PerlIO_printf(PerlIO_stdout(),
2830 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2831 name);
fb73857a 2832 while (*p)
b0e47665 2833 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
4633a7c4
LW
2834}
2835
b4ab917c
DM
2836/* convert a string of -D options (or digits) into an int.
2837 * sets *s to point to the char after the options */
2838
2839#ifdef DEBUGGING
2840int
e1ec3a88 2841Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 2842{
27da23d5 2843 static const char * const usage_msgd[] = {
e6e64d9b
JC
2844 " Debugging flag values: (see also -d)",
2845 " p Tokenizing and parsing (with v, displays parse stack)",
3679267a 2846 " s Stack snapshots (with v, displays all stacks)",
e6e64d9b
JC
2847 " l Context (loop) stack processing",
2848 " t Trace execution",
2849 " o Method and overloading resolution",
2850 " c String/numeric conversions",
2851 " P Print profiling info, preprocessor command for -P, source file input state",
2852 " m Memory allocation",
2853 " f Format processing",
2854 " r Regular expression parsing and execution",
2855 " x Syntax tree dump",
3679267a 2856 " u Tainting checks",
e6e64d9b
JC
2857 " H Hash dump -- usurps values()",
2858 " X Scratchpad allocation",
2859 " D Cleaning up",
2860 " S Thread synchronization",
2861 " T Tokenising",
2862 " R Include reference counts of dumped variables (eg when using -Ds)",
2863 " J Do not s,t,P-debug (Jump over) opcodes within package DB",
2864 " v Verbose: use in conjunction with other flags",
2865 " C Copy On Write",
2866 " A Consistency checks on internal structures",
3679267a 2867 " q quiet - currently only suppresses the 'EXECUTING' message",
e6e64d9b
JC
2868 NULL
2869 };
b4ab917c
DM
2870 int i = 0;
2871 if (isALPHA(**s)) {
2872 /* if adding extra options, remember to update DEBUG_MASK */
bfed75c6 2873 static const char debopts[] = "psltocPmfrxu HXDSTRJvCAq";
b4ab917c
DM
2874
2875 for (; isALNUM(**s); (*s)++) {
e1ec3a88 2876 const char *d = strchr(debopts,**s);
b4ab917c
DM
2877 if (d)
2878 i |= 1 << (d - debopts);
2879 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
2880 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2881 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
2882 }
2883 }
e6e64d9b 2884 else if (isDIGIT(**s)) {
b4ab917c
DM
2885 i = atoi(*s);
2886 for (; isALNUM(**s); (*s)++) ;
2887 }
ddcf8bc1 2888 else if (givehelp) {
06e869a4 2889 const char *const *p = usage_msgd;
e6e64d9b
JC
2890 while (*p) PerlIO_printf(PerlIO_stdout(), "%s\n", *p++);
2891 }
b4ab917c
DM
2892# ifdef EBCDIC
2893 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
2894 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2895 "-Dp not implemented on this platform\n");
2896# endif
2897 return i;
2898}
2899#endif
2900
79072805
LW
2901/* This routine handles any switches that can be given during run */
2902
2903char *
864dbfa3 2904Perl_moreswitches(pTHX_ char *s)
79072805 2905{
27da23d5 2906 dVAR;
84c133a0 2907 UV rschar;
79072805
LW
2908
2909 switch (*s) {
2910 case '0':
a863c7d1 2911 {
f2095865 2912 I32 flags = 0;
a3b680e6 2913 STRLEN numlen;
f2095865
JH
2914
2915 SvREFCNT_dec(PL_rs);
2916 if (s[1] == 'x' && s[2]) {
a3b680e6 2917 const char *e = s+=2;
f2095865
JH
2918 U8 *tmps;
2919
a3b680e6
AL
2920 while (*e)
2921 e++;
f2095865
JH
2922 numlen = e - s;
2923 flags = PERL_SCAN_SILENT_ILLDIGIT;
2924 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
2925 if (s + numlen < e) {
2926 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
2927 numlen = 0;
2928 s--;
2929 }
2930 PL_rs = newSVpvn("", 0);
c5661c80 2931 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH
2932 tmps = (U8*)SvPVX(PL_rs);
2933 uvchr_to_utf8(tmps, rschar);
2934 SvCUR_set(PL_rs, UNISKIP(rschar));
2935 SvUTF8_on(PL_rs);
2936 }
2937 else {
2938 numlen = 4;
2939 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
2940 if (rschar & ~((U8)~0))
2941 PL_rs = &PL_sv_undef;
2942 else if (!rschar && numlen >= 2)
2943 PL_rs = newSVpvn("", 0);
2944 else {
2945 char ch = (char)rschar;
2946 PL_rs = newSVpvn(&ch, 1);
2947 }
2948 }
800633c3 2949 sv_setsv(get_sv("/", TRUE), PL_rs);
f2095865 2950 return s + numlen;
a863c7d1 2951 }
46487f74 2952 case 'C':
a05d7ebb 2953 s++;
dd374669 2954 PL_unicode = parse_unicode_opts( (const char **)&s );
46487f74 2955 return s;
2304df62 2956 case 'F':
3280af22 2957 PL_minus_F = TRUE;
ebce5377
RGS
2958 PL_splitstr = ++s;
2959 while (*s && !isSPACE(*s)) ++s;
2960 *s = '\0';
2961 PL_splitstr = savepv(PL_splitstr);
2304df62 2962 return s;
79072805 2963 case 'a':
3280af22 2964 PL_minus_a = TRUE;
79072805
LW
2965 s++;
2966 return s;
2967 case 'c':
3280af22 2968 PL_minus_c = TRUE;
79072805
LW
2969 s++;
2970 return s;
2971 case 'd':
bbce6d69 2972 forbid_setid("-d");
4633a7c4 2973 s++;
2cbb2ee1
RGS
2974
2975 /* -dt indicates to the debugger that threads will be used */
2976 if (*s == 't' && !isALNUM(s[1])) {
2977 ++s;
2978 my_setenv("PERL5DB_THREADED", "1");
2979 }
2980
70c94a19
RR
2981 /* The following permits -d:Mod to accepts arguments following an =
2982 in the fashion that -MSome::Mod does. */
2983 if (*s == ':' || *s == '=') {
06b5626a 2984 const char *start;
70c94a19
RR
2985 SV *sv;
2986 sv = newSVpv("use Devel::", 0);
2987 start = ++s;
2988 /* We now allow -d:Module=Foo,Bar */
2989 while(isALNUM(*s) || *s==':') ++s;
2990 if (*s != '=')
2991 sv_catpv(sv, start);
2992 else {
2993 sv_catpvn(sv, start, s-start);
0c5a913d 2994 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q%c%s%c)", 0, ++s, 0);
70c94a19 2995 }
4633a7c4 2996 s += strlen(s);
184f32ec 2997 my_setenv("PERL5DB", SvPV_nolen_const(sv));
4633a7c4 2998 }
ed094faf 2999 if (!PL_perldb) {
3280af22 3000 PL_perldb = PERLDB_ALL;
a0d0e21e 3001 init_debugger();
ed094faf 3002 }
79072805
LW
3003 return s;
3004 case 'D':
0453d815 3005 {
79072805 3006#ifdef DEBUGGING
bbce6d69 3007 forbid_setid("-D");
b4ab917c 3008 s++;
dd374669 3009 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3010#else /* !DEBUGGING */
0453d815 3011 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3012 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3013 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
a0d0e21e 3014 for (s++; isALNUM(*s); s++) ;
79072805 3015#endif
79072805 3016 return s;
0453d815 3017 }
4633a7c4 3018 case 'h':
ac27b0f5 3019 usage(PL_origargv[0]);
7ca617d0 3020 my_exit(0);
79072805 3021 case 'i':
43c5f42d 3022 Safefree(PL_inplace);
c030f24b
GH
3023#if defined(__CYGWIN__) /* do backup extension automagically */
3024 if (*(s+1) == '\0') {
3025 PL_inplace = savepv(".bak");
3026 return s+1;
3027 }
3028#endif /* __CYGWIN__ */
3280af22 3029 PL_inplace = savepv(s+1);
a6e20a40
AL
3030 for (s = PL_inplace; *s && !isSPACE(*s); s++)
3031 ;
7b8d334a 3032 if (*s) {
fb73857a 3033 *s++ = '\0';
7b8d334a
GS
3034 if (*s == '-') /* Additional switches on #! line. */
3035 s++;
3036 }
fb73857a 3037 return s;
4e49a025 3038 case 'I': /* -I handled both here and in parse_body() */
bbce6d69 3039 forbid_setid("-I");
fb73857a
PP
3040 ++s;
3041 while (*s && isSPACE(*s))
3042 ++s;
3043 if (*s) {
774d564b 3044 char *e, *p;
0df16ed7
GS
3045 p = s;
3046 /* ignore trailing spaces (possibly followed by other switches) */
3047 do {
3048 for (e = p; *e && !isSPACE(*e); e++) ;
3049 p = e;
3050 while (isSPACE(*p))
3051 p++;
3052 } while (*p && *p != '-');
3053 e = savepvn(s, e-s);
88fe16b2 3054 incpush(e, TRUE, TRUE, FALSE, FALSE);
0df16ed7
GS
3055 Safefree(e);
3056 s = p;
3057 if (*s == '-')
3058 s++;
79072805
LW
3059 }
3060 else
a67e862a 3061 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3062 return s;
79072805 3063 case 'l':
3280af22 3064 PL_minus_l = TRUE;
79072805 3065 s++;
7889fe52
NIS
3066 if (PL_ors_sv) {
3067 SvREFCNT_dec(PL_ors_sv);
3068 PL_ors_sv = Nullsv;
3069 }
79072805 3070 if (isDIGIT(*s)) {
53305cf1 3071 I32 flags = 0;
a3b680e6 3072 STRLEN numlen;
7889fe52 3073 PL_ors_sv = newSVpvn("\n",1);
53305cf1
NC
3074 numlen = 3 + (*s == '0');
3075 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3076 s += numlen;
3077 }
3078 else {
8bfdd7d9 3079 if (RsPARA(PL_rs)) {
7889fe52
NIS
3080 PL_ors_sv = newSVpvn("\n\n",2);
3081 }
3082 else {
8bfdd7d9 3083 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3084 }
79072805
LW
3085 }
3086 return s;
06492da6
SF
3087 case 'A':
3088 forbid_setid("-A");
930366bd
RGS
3089 if (!PL_preambleav)
3090 PL_preambleav = newAV();
aefc56c5
SF
3091 s++;
3092 {
44f8325f
AL
3093 char * const start = s;
3094 SV * const sv = newSVpv("use assertions::activate", 24);
aefc56c5
SF
3095 while(isALNUM(*s) || *s == ':') ++s;
3096 if (s != start) {
3097 sv_catpvn(sv, "::", 2);
3098 sv_catpvn(sv, start, s-start);
3099 }
3100 if (*s == '=') {
0c5a913d 3101 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q%c%s%c)", 0, ++s, 0);
aefc56c5
SF
3102 s+=strlen(s);
3103 }
3104 else if (*s != '\0') {
551405c4 3105 Perl_croak(aTHX_ "Can't use '%c' after -A%.*s", *s, (int)(s-start), start);
aefc56c5 3106 }
06492da6 3107 av_push(PL_preambleav, sv);
aefc56c5 3108 return s;
06492da6 3109 }
1a30305b 3110 case 'M':
bbce6d69 3111 forbid_setid("-M"); /* XXX ? */
1a30305b
PP
3112 /* FALL THROUGH */
3113 case 'm':
bbce6d69 3114 forbid_setid("-m"); /* XXX ? */
1a30305b 3115 if (*++s) {
a5f75d66 3116 char *start;
11343788 3117 SV *sv;
e1ec3a88 3118 const char *use = "use ";
a5f75d66 3119 /* -M-foo == 'no foo' */
d0043bd1
NC
3120 /* Leading space on " no " is deliberate, to make both
3121 possibilities the same length. */
3122 if (*s == '-') { use = " no "; ++s; }
3123 sv = newSVpvn(use,4);
a5f75d66 3124 start = s;
1a30305b 3125 /* We allow -M'Module qw(Foo Bar)' */
c07a80fd
PP
3126 while(isALNUM(*s) || *s==':') ++s;
3127 if (*s != '=') {
11343788 3128 sv_catpv(sv, start);
c07a80fd
PP
3129 if (*(start-1) == 'm') {
3130 if (*s != '\0')
cea2e8a9 3131 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
11343788 3132 sv_catpv( sv, " ()");
c07a80fd
PP
3133 }
3134 } else {
6df41af2 3135 if (s == start)
be98fb35
GS
3136 Perl_croak(aTHX_ "Module name required with -%c option",
3137 s[-1]);
11343788 3138 sv_catpvn(sv, start, s-start);
3d27e215
LM
3139 sv_catpv(sv, " split(/,/,q");
3140 sv_catpvn(sv, "\0)", 1); /* Use NUL as q//-delimiter. */
11343788 3141 sv_catpv(sv, ++s);
3d27e215 3142 sv_catpvn(sv, "\0)", 2);
c07a80fd 3143 }
1a30305b 3144 s += strlen(s);
5c831c24 3145 if (!PL_preambleav)
3280af22
NIS
3146 PL_preambleav = newAV();
3147 av_push(PL_preambleav, sv);
1a30305b
PP
3148 }
3149 else
9e81e6a1 3150 Perl_croak(aTHX_ "Missing argument to -%c", *(s-1));
1a30305b 3151 return s;
79072805 3152 case 'n':
3280af22 3153 PL_minus_n = TRUE;
79072805
LW
3154 s++;
3155 return s;
3156 case 'p':
3280af22 3157 PL_minus_p = TRUE;
79072805
LW
3158 s++;
3159 return s;
3160 case 's':
bbce6d69 3161 forbid_setid("-s");
3280af22 3162 PL_doswitches = TRUE;
79072805
LW
3163 s++;
3164 return s;
6537fe72
MS
3165 case 't':
3166 if (!PL_tainting)
22f7c9c9 3167 TOO_LATE_FOR('t');
6537fe72
MS
3168 s++;
3169 return s;
463ee0b2 3170 case 'T':
3280af22 3171 if (!PL_tainting)
22f7c9c9 3172 TOO_LATE_FOR('T');
463ee0b2
LW
3173 s++;
3174 return s;
79072805 3175 case 'u':
bf4acbe4
GS
3176#ifdef MACOS_TRADITIONAL
3177 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
3178#endif
3280af22 3179 PL_do_undump = TRUE;
79072805
LW
3180 s++;
3181 return s;
3182 case 'U':
3280af22 3183 PL_unsafe = TRUE;
79072805
LW
3184 s++;
3185 return s;
3186 case 'v':
d7aa5382
JP
3187 if (!sv_derived_from(PL_patchlevel, "version"))
3188 (void *)upg_version(PL_patchlevel);
8e9464f1 3189#if !defined(DGUX)
b0e47665 3190 PerlIO_printf(PerlIO_stdout(),
52ea0aec 3191 Perl_form(aTHX_ "\nThis is perl, %"SVf" built for %s",
d7aa5382
JP
3192 vstringify(PL_patchlevel),
3193 ARCHNAME));
8e9464f1
JH
3194#else /* DGUX */
3195/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3196 PerlIO_printf(PerlIO_stdout(),
52ea0aec 3197 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
d7aa5382 3198 vstringify(PL_patchlevel)));
8e9464f1
JH
3199 PerlIO_printf(PerlIO_stdout(),
3200 Perl_form(aTHX_ " built under %s at %s %s\n",
3201 OSNAME, __DATE__, __TIME__));
3202 PerlIO_printf(PerlIO_stdout(),
3203 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 3204 OSVERS));
8e9464f1
JH
3205#endif /* !DGUX */
3206
fb73857a
PP
3207#if defined(LOCAL_PATCH_COUNT)
3208 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS
3209 PerlIO_printf(PerlIO_stdout(),
3210 "\n(with %d registered patch%s, "
3211 "see perl -V for more detail)",
3212 (int)LOCAL_PATCH_COUNT,
3213 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 3214#endif
1a30305b 3215
b0e47665 3216 PerlIO_printf(PerlIO_stdout(),
359b00fe 3217 "\n\nCopyright 1987-2005, Larry Wall\n");
eae9c151
JH
3218#ifdef MACOS_TRADITIONAL
3219 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3220 "\nMac OS port Copyright 1991-2002, Matthias Neeracher;\n"
03765510 3221 "maintained by Chris Nandor\n");
eae9c151 3222#endif
79072805 3223#ifdef MSDOS
b0e47665
GS
3224 PerlIO_printf(PerlIO_stdout(),
3225 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff
PP
3226#endif
3227#ifdef DJGPP
b0e47665
GS
3228 PerlIO_printf(PerlIO_stdout(),
3229 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3230 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 3231#endif
79072805 3232#ifdef OS2
b0e47665
GS
3233 PerlIO_printf(PerlIO_stdout(),
3234 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
be3c0a43 3235 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
79072805 3236#endif
79072805 3237#ifdef atarist
b0e47665
GS
3238 PerlIO_printf(PerlIO_stdout(),
3239 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 3240#endif
a3f9223b 3241#ifdef __BEOS__
b0e47665
GS
3242 PerlIO_printf(PerlIO_stdout(),
3243 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 3244#endif
1d84e8df 3245#ifdef MPE
b0e47665 3246 PerlIO_printf(PerlIO_stdout(),
e583a879 3247 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n");
1d84e8df 3248#endif
9d116dd7 3249#ifdef OEMVS
b0e47665
GS
3250 PerlIO_printf(PerlIO_stdout(),
3251 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 3252#endif
495c5fdc 3253#ifdef __VOS__
b0e47665 3254 PerlIO_printf(PerlIO_stdout(),
94efb9fb 3255 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
495c5fdc 3256#endif
092bebab 3257#ifdef __OPEN_VM
b0e47665
GS
3258 PerlIO_printf(PerlIO_stdout(),
3259 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 3260#endif
a1a0e61e 3261#ifdef POSIX_BC
b0e47665
GS
3262 PerlIO_printf(PerlIO_stdout(),
3263 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 3264#endif
61ae2fbf 3265#ifdef __MINT__
b0e47665
GS
3266 PerlIO_printf(PerlIO_stdout(),
3267 "MiNT port by Guido Flohr, 1997-1999\n");
61ae2fbf 3268#endif
f83d2536 3269#ifdef EPOC
b0e47665 3270 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3271 "EPOC port by Olaf Flebbe, 1999-2002\n");
f83d2536 3272#endif
e1caacb4 3273#ifdef UNDER_CE
b475b3e6
JH
3274 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
3275 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
e1caacb4
JH
3276 wce_hitreturn();
3277#endif
a0fd4948 3278#ifdef __SYMBIAN32__
27da23d5
JH
3279 PerlIO_printf(PerlIO_stdout(),
3280 "Symbian port by Nokia, 2004-2005\n");
3281#endif
baed7233
DL
3282#ifdef BINARY_BUILD_NOTICE
3283 BINARY_BUILD_NOTICE;
3284#endif
b0e47665
GS
3285 PerlIO_printf(PerlIO_stdout(),
3286 "\n\
79072805 3287Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 3288GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687 3289Complete documentation for Perl, including FAQ lists, should be found on\n\
a0288114 3290this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
c9e30dd8 3291Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
7ca617d0 3292 my_exit(0);
79072805 3293 case 'w':
599cee73 3294 if (! (PL_dowarn & G_WARN_ALL_MASK))
ac27b0f5 3295 PL_dowarn |= G_WARN_ON;
599cee73
PM
3296 s++;
3297 return s;
3298 case 'W':
ac27b0f5 3299 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
317ea90d
MS
3300 if (!specialWARN(PL_compiling.cop_warnings))
3301 SvREFCNT_dec(PL_compiling.cop_warnings);
d3a7d8c7 3302 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM
3303 s++;
3304 return s;
3305 case 'X':
ac27b0f5 3306 PL_dowarn = G_WARN_ALL_OFF;
317ea90d
MS
3307 if (!specialWARN(PL_compiling.cop_warnings))
3308 SvREFCNT_dec(PL_compiling.cop_warnings);
d3a7d8c7 3309 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW
3310 s++;
3311 return s;
a0d0e21e 3312 case '*':
79072805
LW
3313 case ' ':
3314 if (s[1] == '-') /* Additional switches on #! line. */
3315 return s+2;
3316 break;
a0d0e21e 3317 case '-':
79072805 3318 case 0:
51882d45 3319#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS
3320 case '\r':
3321#endif
79072805
LW
3322 case '\n':
3323 case '\t':
3324 break;
aa689395
PP
3325#ifdef ALTERNATE_SHEBANG
3326 case 'S': /* OS/2 needs -S on "extproc" line. */
3327 break;
3328#endif
a0d0e21e 3329 case 'P':
3280af22 3330 if (PL_preprocess)
a0d0e21e
LW
3331 return s+1;
3332 /* FALL THROUGH */
79072805 3333 default:
cea2e8a9 3334 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805
LW
3335 }
3336 return Nullch;
3337}
3338
3339/* compliments of Tom Christiansen */
3340
3341/* unexec() can be found in the Gnu emacs distribution */
ee580363 3342/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW
3343
3344void
864dbfa3 3345Perl_my_unexec(pTHX)
79072805
LW
3346{
3347#ifdef UNEXEC
46fc3d4c
PP
3348 SV* prog;
3349 SV* file;
ee580363 3350 int status = 1;
79072805
LW
3351 extern int etext;
3352
ee580363 3353 prog = newSVpv(BIN_EXP, 0);
46fc3d4c 3354 sv_catpv(prog, "/perl");
6b88bc9c 3355 file = newSVpv(PL_origfilename, 0);
46fc3d4c 3356 sv_catpv(file, ".perldump");
79072805 3357
ee580363
GS
3358 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3359 /* unexec prints msg to stderr in case of failure */
6ad3d225 3360 PerlProc_exit(status);
79072805 3361#else
a5f75d66
AD
3362# ifdef VMS
3363# include <lib$routines.h>
3364 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
aa689395 3365# else
79072805 3366 ABORT(); /* for use with undump */
aa689395 3367# endif
a5f75d66 3368#endif
79072805
LW
3369}
3370
cb68f92d
GS
3371/* initialize curinterp */
3372STATIC void
cea2e8a9 3373S_init_interp(pTHX)
cb68f92d
GS
3374{
3375
acfe0abc
GS
3376#ifdef MULTIPLICITY
3377# define PERLVAR(var,type)
3378# define PERLVARA(var,n,type)
3379# if defined(PERL_IMPLICIT_CONTEXT)
3380# if defined(USE_5005THREADS)
3381# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
27da23d5 3382# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
acfe0abc
GS
3383# else /* !USE_5005THREADS */
3384# define PERLVARI(var,type,init) aTHX->var = init;
3385# define PERLVARIC(var,type,init) aTHX->var = init;
3386# endif /* USE_5005THREADS */
3967c732 3387# else
acfe0abc
GS
3388# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
3389# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
066ef5b5 3390# endif
acfe0abc
GS
3391# include "intrpvar.h"
3392# ifndef USE_5005THREADS
3393# include "thrdvar.h"
3394# endif
3395# undef PERLVAR
3396# undef PERLVARA
3397# undef PERLVARI
3398# undef PERLVARIC
3399#else
3400# define PERLVAR(var,type)
3401# define PERLVARA(var,n,type)
3402# define PERLVARI(var,type,init) PL_##var = init;
3403# define PERLVARIC(var,type,init) PL_##var = init;
3404# include "intrpvar.h"
3405# ifndef USE_5005THREADS
3406# include "thrdvar.h"
3407# endif
3408# undef PERLVAR
3409# undef PERLVARA
3410# undef PERLVARI
3411# undef PERLVARIC
cb68f92d
GS
3412#endif
3413
cb68f92d
GS
3414}
3415
76e3520e 3416STATIC void
cea2e8a9 3417S_init_main_stash(pTHX)
79072805 3418{
463ee0b2 3419 GV *gv;
6e72f9df 3420
3280af22 3421 PL_curstash = PL_defstash = newHV();
79cb57f6 3422 PL_curstname = newSVpvn("main",4);
adbc6bb1
LW
3423 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
3424 SvREFCNT_dec(GvHV(gv));
3280af22 3425 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
463ee0b2 3426 SvREADONLY_on(gv);
51a37f80 3427 hv_name_set(PL_defstash, "main", 4, 0);
3280af22
NIS
3428 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
3429 GvMULTI_on(PL_incgv);
3430 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
3431 GvMULTI_on(PL_hintgv);
3432 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
3433 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
3434 GvMULTI_on(PL_errgv);
3435 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
3436 GvMULTI_on(PL_replgv);
cea2e8a9 3437 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
c69033f2
NC
3438#ifdef PERL_DONT_CREATE_GVSV
3439 gv_SVadd(PL_errgv);
3440#endif
38a03e6e
MB
3441 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
3442 sv_setpvn(ERRSV, "", 0);
3280af22 3443 PL_curstash = PL_defstash;
11faa288 3444 CopSTASH_set(&PL_compiling, PL_defstash);
ed094faf 3445 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
3280af22 3446 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
4633a7c4 3447 /* We must init $/ before switches are processed. */
864dbfa3 3448 sv_setpvn(get_sv("/", TRUE), "\n", 1);
79072805
LW
3449}
3450
ae3f3efd 3451/* PSz 18 Nov 03 fdscript now global but do not change prototype */
76e3520e 3452STATIC void
dd374669 3453S_open_script(pTHX_ const char *scriptname, bool dosearch, SV *sv)
79072805 3454{
ae3f3efd 3455#ifndef IAMSUID
e1ec3a88
AL
3456 const char *quote;
3457 const char *code;
3458 const char *cpp_discard_flag;
3459 const char *perl;
ae3f3efd 3460#endif
27da23d5 3461 dVAR;
1b24ed4b 3462
ae3f3efd
PS
3463 PL_fdscript = -1;
3464 PL_suidscript = -1;
79072805 3465
3280af22 3466 if (PL_e_script) {
ff5bdd37 3467 PL_origfilename = savepvn("-e", 2);
96436eeb 3468 }
6c4ab083
GS
3469 else {
3470 /* if find_script() returns, it returns a malloc()-ed value */
dd374669 3471 scriptname = PL_origfilename = find_script(scriptname, dosearch, NULL, 1);
6c4ab083
GS
3472
3473 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
e1ec3a88 3474 const char *s = scriptname + 8;
ae3f3efd 3475 PL_fdscript = atoi(s);
6c4ab083
GS
3476 while (isDIGIT(*s))
3477 s++;
3478 if (*s) {
ae3f3efd
PS
3479 /* PSz 18 Feb 04
3480 * Tell apart "normal" usage of fdscript, e.g.
3481 * with bash on FreeBSD:
3482 * perl <( echo '#!perl -DA'; echo 'print "$0\n"')
3483 * from usage in suidperl.
3484 * Does any "normal" usage leave garbage after the number???
3485 * Is it a mistake to use a similar /dev/fd/ construct for
3486 * suidperl?
3487 */
3488 PL_suidscript = 1;
3489 /* PSz 20 Feb 04
3490 * Be supersafe and do some sanity-checks.
3491 * Still, can we be sure we got the right thing?
3492 */
3493 if (*s != '/') {
3494 Perl_croak(aTHX_ "Wrong syntax (suid) fd script name \"%s\"\n", s);
3495 }
3496 if (! *(s+1)) {
3497 Perl_croak(aTHX_ "Missing (suid) fd script name\n");
3498 }
6c4ab083 3499 scriptname = savepv(s + 1);
3280af22 3500 Safefree(PL_origfilename);
dd374669 3501 PL_origfilename = (char *)scriptname;
6c4ab083
GS
3502 }
3503 }
3504 }
3505
05ec9bb3 3506 CopFILE_free(PL_curcop);
57843af0 3507 CopFILE_set(PL_curcop, PL_origfilename);
770526c1 3508 if (*PL_origfilename == '-' && PL_origfilename[1] == '\0')
dd374669 3509 scriptname = (char *)"";
ae3f3efd
PS
3510 if (PL_fdscript >= 0) {
3511 PL_rsfp = PerlIO_fdopen(PL_fdscript,PERL_SCRIPT_MODE);
1b24ed4b
MS
3512# if defined(HAS_FCNTL) && defined(F_SETFD)
3513 if (PL_rsfp)
3514 /* ensure close-on-exec */
3515 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1);
3516# endif
96436eeb 3517 }
ae3f3efd
PS
3518#ifdef IAMSUID
3519 else {
86207487
NC
3520 Perl_croak(aTHX_ "sperl needs fd script\n"
3521 "You should not call sperl directly; do you need to "
3522 "change a #! line\nfrom sperl to perl?\n");
3523
ae3f3efd
PS
3524/* PSz 11 Nov 03
3525 * Do not open (or do other fancy stuff) while setuid.
3526 * Perl does the open, and hands script to suidperl on a fd;
3527 * suidperl only does some checks, sets up UIDs and re-execs
3528 * perl with that fd as it has always done.
3529 */
3530 }
3531 if (PL_suidscript != 1) {
3532 Perl_croak(aTHX_ "suidperl needs (suid) fd script\n");
3533 }
3534#else /* IAMSUID */
3280af22 3535 else if (PL_preprocess) {
dd374669 3536 const char *cpp_cfg = CPPSTDIN;
79cb57f6 3537 SV *cpp = newSVpvn("",0);
46fc3d4c
PP
3538 SV *cmd = NEWSV(0,0);
3539
ae58f265
JH
3540 if (cpp_cfg[0] == 0) /* PERL_MICRO? */
3541 Perl_croak(aTHX_ "Can't run with cpp -P with CPPSTDIN undefined");
46fc3d4c 3542 if (strEQ(cpp_cfg, "cppstdin"))
cea2e8a9 3543 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
46fc3d4c 3544 sv_catpv(cpp, cpp_cfg);
79072805 3545
1b24ed4b
MS
3546# ifndef VMS
3547 sv_catpvn(sv, "-I", 2);
3548 sv_catpv(sv,PRIVLIB_EXP);
3549# endif
46fc3d4c 3550
14953ddc
MB
3551 DEBUG_P(PerlIO_printf(Perl_debug_log,
3552 "PL_preprocess: scriptname=\"%s\", cpp=\"%s\", sv=\"%s\", CPPMINUS=\"%s\"\n",
848ef955
NC
3553 scriptname, SvPVX_const (cpp), SvPVX_const (sv),
3554 CPPMINUS));
1b24ed4b
MS
3555
3556# if defined(MSDOS) || defined(WIN32) || defined(VMS)
3557 quote =