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[perl5.git] / perl.c
CommitLineData
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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 *
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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
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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
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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
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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
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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,
32e30700
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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;
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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
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182 return my_perl;
183}
184#else
954c1994
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185
186/*
ccfc67b7
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187=head1 Embedding Functions
188
954c1994
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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
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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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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();
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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
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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
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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
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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
SH
1775# endif
1776# ifdef THREADS_HAVE_PIDS
e2e4dbf1 1777 " THREADS_HAVE_PIDS"
85e1fcb9 1778# endif
4d1ff10f 1779# ifdef USE_5005THREADS
e2e4dbf1 1780 " USE_5005THREADS"
b363f7ed 1781# endif
85e1fcb9 1782# ifdef USE_64_BIT_ALL
e2e4dbf1 1783 " USE_64_BIT_ALL"
ac5e8965 1784# endif
10cc9d2a 1785# ifdef USE_64_BIT_INT
e2e4dbf1 1786 " USE_64_BIT_INT"
10cc9d2a 1787# endif
85e1fcb9 1788# ifdef USE_ITHREADS
e2e4dbf1 1789 " USE_ITHREADS"
85e1fcb9
SH
1790# endif
1791# ifdef USE_LARGE_FILES
e2e4dbf1 1792 " USE_LARGE_FILES"
ac5e8965
JH
1793# endif
1794# ifdef USE_LONG_DOUBLE
e2e4dbf1 1795 " USE_LONG_DOUBLE"
ac5e8965 1796# endif
85e1fcb9 1797# ifdef USE_PERLIO
e2e4dbf1 1798 " USE_PERLIO"
53430762 1799# endif
85e1fcb9 1800# ifdef USE_REENTRANT_API
e2e4dbf1 1801 " USE_REENTRANT_API"
85e1fcb9
SH
1802# endif
1803# ifdef USE_SFIO
e2e4dbf1 1804 " USE_SFIO"
ac5e8965 1805# endif
20ef40cf 1806# ifdef USE_SITECUSTOMIZE
e2e4dbf1 1807 " USE_SITECUSTOMIZE"
20ef40cf 1808# endif
85e1fcb9 1809# ifdef USE_SOCKS
e2e4dbf1 1810 " USE_SOCKS"
b363f7ed 1811# endif
e2e4dbf1 1812 );
efcaa95b 1813
7edfd0ef
NC
1814 while (SvCUR(opts_prog) > opts+76) {
1815 /* find last space after "options: " and before col 76
1816 */
efcaa95b 1817
7edfd0ef
NC
1818 const char *space;
1819 char *pv = SvPV_nolen(opts_prog);
1820 const char c = pv[opts+76];
1821 pv[opts+76] = '\0';
1822 space = strrchr(pv+opts+26, ' ');
1823 pv[opts+76] = c;
1824 if (!space) break; /* "Can't happen" */
efcaa95b 1825
7edfd0ef 1826 /* break the line before that space */
efcaa95b 1827
7edfd0ef
NC
1828 opts = space - pv;
1829 sv_insert(opts_prog, opts, 0,
1830 "\\n ", 25);
1831 }
efcaa95b 1832
7edfd0ef 1833 sv_catpv(opts_prog,"\\n\",");
b363f7ed 1834
6224f72b 1835#if defined(LOCAL_PATCH_COUNT)
7edfd0ef
NC
1836 if (LOCAL_PATCH_COUNT > 0) {
1837 int i;
1838 sv_catpv(opts_prog,
1839 "\" Locally applied patches:\\n\",");
1840 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1841 if (PL_localpatches[i])
1842 Perl_sv_catpvf(aTHX_ opts_prog,"q%c\t%s\n%c,",
1843 0, PL_localpatches[i], 0);
1844 }
6224f72b 1845 }
6224f72b 1846#endif
7edfd0ef
NC
1847 Perl_sv_catpvf(aTHX_ opts_prog,
1848 "\" Built under %s\\n\"",OSNAME);
6224f72b
GS
1849#ifdef __DATE__
1850# ifdef __TIME__
7edfd0ef
NC
1851 Perl_sv_catpvf(aTHX_ opts_prog,
1852 ",\" Compiled at %s %s\\n\"",__DATE__,
1853 __TIME__);
6224f72b 1854# else
7edfd0ef
NC
1855 Perl_sv_catpvf(aTHX_ opts_prog,",\" Compiled on %s\\n\"",
1856 __DATE__);
6224f72b
GS
1857# endif
1858#endif
7edfd0ef
NC
1859 sv_catpv(opts_prog, "; $\"=\"\\n \"; "
1860 "@env = map { \"$_=\\\"$ENV{$_}\\\"\" } "
1861 "sort grep {/^PERL/} keys %ENV; ");
69fcd688 1862#ifdef __CYGWIN__
7edfd0ef
NC
1863 sv_catpv(opts_prog,
1864 "push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
69fcd688 1865#endif
7edfd0ef
NC
1866 sv_catpv(opts_prog,
1867 "print \" \\%ENV:\\n @env\\n\" if @env;"
1868 "print \" \\@INC:\\n @INC\\n\";");
1869 }
1870 else {
1871 ++s;
1872 opts_prog = Perl_newSVpvf(aTHX_
1873 "Config::config_vars(qw%c%s%c)",
1874 0, s, 0);
1875 s += strlen(s);
1876 }
1877 av_push(PL_preambleav, opts_prog);
1878 /* don't look for script or read stdin */
1879 scriptname = BIT_BUCKET;
1880 goto reswitch;
6224f72b 1881 }
6224f72b 1882 case 'x':
3280af22 1883 PL_doextract = TRUE;
6224f72b
GS
1884 s++;
1885 if (*s)
f4c556ac 1886 cddir = s;
6224f72b
GS
1887 break;
1888 case 0:
1889 break;
1890 case '-':
1891 if (!*++s || isSPACE(*s)) {
1892 argc--,argv++;
1893 goto switch_end;
1894 }
1895 /* catch use of gnu style long options */
1896 if (strEQ(s, "version")) {
dd374669 1897 s = (char *)"v";
6224f72b
GS
1898 goto reswitch;
1899 }
1900 if (strEQ(s, "help")) {
dd374669 1901 s = (char *)"h";
6224f72b
GS
1902 goto reswitch;
1903 }
1904 s--;
1905 /* FALL THROUGH */
1906 default:
cea2e8a9 1907 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
1908 }
1909 }
6224f72b 1910 switch_end:
54310121 1911
f675dbe5
CB
1912 if (
1913#ifndef SECURE_INTERNAL_GETENV
1914 !PL_tainting &&
1915#endif
cf756827 1916 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1917 {
e1ec3a88 1918 const char *popt = s;
74288ac8
GS
1919 while (isSPACE(*s))
1920 s++;
317ea90d 1921 if (*s == '-' && *(s+1) == 'T') {
22f7c9c9 1922 CHECK_MALLOC_TOO_LATE_FOR('T');
74288ac8 1923 PL_tainting = TRUE;
317ea90d
MS
1924 PL_taint_warn = FALSE;
1925 }
74288ac8 1926 else {
cf756827 1927 char *popt_copy = Nullch;
74288ac8 1928 while (s && *s) {
4ea8f8fb 1929 char *d;
74288ac8
GS
1930 while (isSPACE(*s))
1931 s++;
1932 if (*s == '-') {
1933 s++;
1934 if (isSPACE(*s))
1935 continue;
1936 }
4ea8f8fb 1937 d = s;
74288ac8
GS
1938 if (!*s)
1939 break;
e4af53b0 1940 if (!strchr("CDIMUdmtwA", *s))
cea2e8a9 1941 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
1942 while (++s && *s) {
1943 if (isSPACE(*s)) {
cf756827
GS
1944 if (!popt_copy) {
1945 popt_copy = SvPVX(sv_2mortal(newSVpv(popt,0)));
1946 s = popt_copy + (s - popt);
1947 d = popt_copy + (d - popt);
1948 }
4ea8f8fb
MS
1949 *s++ = '\0';
1950 break;
1951 }
1952 }
1c4db469 1953 if (*d == 't') {
317ea90d
MS
1954 if( !PL_tainting ) {
1955 PL_taint_warn = TRUE;
1956 PL_tainting = TRUE;
1957 }
1c4db469
RGS
1958 } else {
1959 moreswitches(d);
1960 }
6224f72b 1961 }
6224f72b
GS
1962 }
1963 }
a0d0e21e 1964
20ef40cf
GA
1965#ifdef USE_SITECUSTOMIZE
1966 if (!minus_f) {
1967 if (!PL_preambleav)
1968 PL_preambleav = newAV();
1969 av_unshift(PL_preambleav, 1);
1970 (void)av_store(PL_preambleav, 0, Perl_newSVpvf(aTHX_ "BEGIN { do '%s/sitecustomize.pl' }", SITELIB_EXP));
1971 }
1972#endif
1973
317ea90d
MS
1974 if (PL_taint_warn && PL_dowarn != G_WARN_ALL_OFF) {
1975 PL_compiling.cop_warnings = newSVpvn(WARN_TAINTstring, WARNsize);
1976 }
1977
6224f72b
GS
1978 if (!scriptname)
1979 scriptname = argv[0];
3280af22 1980 if (PL_e_script) {
6224f72b
GS
1981 argc++,argv--;
1982 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1983 }
1984 else if (scriptname == Nullch) {
1985#ifdef MSDOS
1986 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1987 moreswitches("h");
1988#endif
1989 scriptname = "-";
1990 }
1991
b7975bdd
NC
1992 /* Set $^X early so that it can be used for relocatable paths in @INC */
1993 assert (!PL_tainted);
1994 TAINT;
1995 S_set_caret_X(aTHX);
1996 TAINT_NOT;
6224f72b
GS
1997 init_perllib();
1998
c5cccb17 1999 open_script(scriptname,dosearch,sv);
6224f72b 2000
c5cccb17 2001 validate_suid(validarg, scriptname);
6224f72b 2002
64ca3a65 2003#ifndef PERL_MICRO
0b5b802d
GS
2004#if defined(SIGCHLD) || defined(SIGCLD)
2005 {
2006#ifndef SIGCHLD
2007# define SIGCHLD SIGCLD
2008#endif
2009 Sighandler_t sigstate = rsignal_state(SIGCHLD);
8aad04aa 2010 if (sigstate == (Sighandler_t) SIG_IGN) {
0b5b802d 2011 if (ckWARN(WARN_SIGNAL))
9014280d 2012 Perl_warner(aTHX_ packWARN(WARN_SIGNAL),
0b5b802d
GS
2013 "Can't ignore signal CHLD, forcing to default");
2014 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2015 }
2016 }
2017#endif
64ca3a65 2018#endif
0b5b802d 2019
bf4acbe4
GS
2020#ifdef MACOS_TRADITIONAL
2021 if (PL_doextract || gMacPerl_AlwaysExtract) {
2022#else
f4c556ac 2023 if (PL_doextract) {
bf4acbe4 2024#endif
6224f72b 2025 find_beginning();
dd374669 2026 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
f4c556ac
GS
2027 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2028
2029 }
6224f72b 2030
3280af22
NIS
2031 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
2032 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
2033 CvUNIQUE_on(PL_compcv);
2034
dd2155a4 2035 CvPADLIST(PL_compcv) = pad_new(0);
4d1ff10f 2036#ifdef USE_5005THREADS
533c011a 2037 CvOWNER(PL_compcv) = 0;
a02a5408 2038 Newx(CvMUTEXP(PL_compcv), 1, perl_mutex);
533c011a 2039 MUTEX_INIT(CvMUTEXP(PL_compcv));
4d1ff10f 2040#endif /* USE_5005THREADS */
6224f72b 2041
0c4f7ff0 2042 boot_core_PerlIO();
6224f72b 2043 boot_core_UNIVERSAL();
09bef843 2044 boot_core_xsutils();
6224f72b
GS
2045
2046 if (xsinit)
acfe0abc 2047 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2048#ifndef PERL_MICRO
ed79a026 2049#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
c5be433b 2050 init_os_extras();
6224f72b 2051#endif
64ca3a65 2052#endif
6224f72b 2053
29209bc5 2054#ifdef USE_SOCKS
1b9c9cf5
DH
2055# ifdef HAS_SOCKS5_INIT
2056 socks5_init(argv[0]);
2057# else
29209bc5 2058 SOCKSinit(argv[0]);
1b9c9cf5 2059# endif
ac27b0f5 2060#endif
29209bc5 2061
6224f72b
GS
2062 init_predump_symbols();
2063 /* init_postdump_symbols not currently designed to be called */
2064 /* more than once (ENV isn't cleared first, for example) */
2065 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2066 if (!PL_do_undump)
6224f72b
GS
2067 init_postdump_symbols(argc,argv,env);
2068
27da23d5
JH
2069 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2070 * or explicitly in some platforms.
085a54d9 2071 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2072 * look like the user wants to use UTF-8. */
a0fd4948 2073#if defined(__SYMBIAN32__)
27da23d5
JH
2074 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2075#endif
06e66572
JH
2076 if (PL_unicode) {
2077 /* Requires init_predump_symbols(). */
a05d7ebb 2078 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2079 IO* io;
2080 PerlIO* fp;
2081 SV* sv;
2082
a05d7ebb 2083 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2084 * and the default open disciplines. */
a05d7ebb
JH
2085 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2086 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2087 (fp = IoIFP(io)))
2088 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2089 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2090 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2091 (fp = IoOFP(io)))
2092 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2093 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2094 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2095 (fp = IoOFP(io)))
2096 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2097 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
2098 (sv = GvSV(gv_fetchpv("\017PEN", TRUE, SVt_PV)))) {
2099 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2100 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2101 if (in) {
2102 if (out)
2103 sv_setpvn(sv, ":utf8\0:utf8", 11);
2104 else
2105 sv_setpvn(sv, ":utf8\0", 6);
2106 }
2107 else if (out)
2108 sv_setpvn(sv, "\0:utf8", 6);
2109 SvSETMAGIC(sv);
2110 }
b310b053
JH
2111 }
2112 }
2113
4ffa73a3
JH
2114 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2115 if (strEQ(s, "unsafe"))
2116 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2117 else if (strEQ(s, "safe"))
2118 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2119 else
2120 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2121 }
2122
6224f72b
GS
2123 init_lexer();
2124
2125 /* now parse the script */
2126
93189314 2127 SETERRNO(0,SS_NORMAL);
3280af22 2128 PL_error_count = 0;
bf4acbe4
GS
2129#ifdef MACOS_TRADITIONAL
2130 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
2131 if (PL_minus_c)
2132 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
2133 else {
2134 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
2135 MacPerl_MPWFileName(PL_origfilename));
2136 }
2137 }
2138#else
3280af22
NIS
2139 if (yyparse() || PL_error_count) {
2140 if (PL_minus_c)
cea2e8a9 2141 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2142 else {
cea2e8a9 2143 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2144 PL_origfilename);
6224f72b
GS
2145 }
2146 }
bf4acbe4 2147#endif
57843af0 2148 CopLINE_set(PL_curcop, 0);
3280af22
NIS
2149 PL_curstash = PL_defstash;
2150 PL_preprocess = FALSE;
2151 if (PL_e_script) {
2152 SvREFCNT_dec(PL_e_script);
2153 PL_e_script = Nullsv;
6224f72b
GS
2154 }
2155
3280af22 2156 if (PL_do_undump)
6224f72b
GS
2157 my_unexec();
2158
57843af0
GS
2159 if (isWARN_ONCE) {
2160 SAVECOPFILE(PL_curcop);
2161 SAVECOPLINE(PL_curcop);
3280af22 2162 gv_check(PL_defstash);
57843af0 2163 }
6224f72b
GS
2164
2165 LEAVE;
2166 FREETMPS;
2167
2168#ifdef MYMALLOC
2169 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2170 dump_mstats("after compilation:");
2171#endif
2172
2173 ENTER;
3280af22 2174 PL_restartop = 0;
312caa8e 2175 return NULL;
6224f72b
GS
2176}
2177
954c1994
GS
2178/*
2179=for apidoc perl_run
2180
2181Tells a Perl interpreter to run. See L<perlembed>.
2182
2183=cut
2184*/
2185
6224f72b 2186int
0cb96387 2187perl_run(pTHXx)
6224f72b 2188{
6224f72b 2189 I32 oldscope;
14dd3ad8 2190 int ret = 0;
db36c5a1 2191 dJMPENV;
6224f72b 2192
9d4ba2ae
AL
2193 PERL_UNUSED_ARG(my_perl);
2194
3280af22 2195 oldscope = PL_scopestack_ix;
96e176bf
CL
2196#ifdef VMS
2197 VMSISH_HUSHED = 0;
2198#endif
6224f72b 2199
14dd3ad8 2200 JMPENV_PUSH(ret);
6224f72b
GS
2201 switch (ret) {
2202 case 1:
2203 cxstack_ix = -1; /* start context stack again */
312caa8e 2204 goto redo_body;
14dd3ad8 2205 case 0: /* normal completion */
14dd3ad8
GS
2206 redo_body:
2207 run_body(oldscope);
14dd3ad8
GS
2208 /* FALL THROUGH */
2209 case 2: /* my_exit() */
3280af22 2210 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2211 LEAVE;
2212 FREETMPS;
3280af22 2213 PL_curstash = PL_defstash;
3a1ee7e8 2214 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
31d77e54
AB
2215 PL_endav && !PL_minus_c)
2216 call_list(oldscope, PL_endav);
6224f72b
GS
2217#ifdef MYMALLOC
2218 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2219 dump_mstats("after execution: ");
2220#endif
37038d91 2221 ret = STATUS_EXIT;
14dd3ad8 2222 break;
6224f72b 2223 case 3:
312caa8e
CS
2224 if (PL_restartop) {
2225 POPSTACK_TO(PL_mainstack);
2226 goto redo_body;
6224f72b 2227 }
bf49b057 2228 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 2229 FREETMPS;
14dd3ad8
GS
2230 ret = 1;
2231 break;
6224f72b
GS
2232 }
2233
14dd3ad8
GS
2234 JMPENV_POP;
2235 return ret;
312caa8e
CS
2236}
2237
14dd3ad8 2238
dd374669 2239STATIC void
14dd3ad8
GS
2240S_run_body(pTHX_ I32 oldscope)
2241{
6224f72b 2242 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 2243 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 2244
3280af22 2245 if (!PL_restartop) {
6224f72b 2246 DEBUG_x(dump_all());
cf2782cd 2247#ifdef DEBUGGING
ecae49c0
NC
2248 if (!DEBUG_q_TEST)
2249 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2250#endif
b900a521
JH
2251 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
2252 PTR2UV(thr)));
6224f72b 2253
3280af22 2254 if (PL_minus_c) {
bf4acbe4 2255#ifdef MACOS_TRADITIONAL
e69a2255
JH
2256 PerlIO_printf(Perl_error_log, "%s%s syntax OK\n",
2257 (gMacPerl_ErrorFormat ? "# " : ""),
2258 MacPerl_MPWFileName(PL_origfilename));
bf4acbe4 2259#else
bf49b057 2260 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
bf4acbe4 2261#endif
6224f72b
GS
2262 my_exit(0);
2263 }
3280af22 2264 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 2265 sv_setiv(PL_DBsingle, 1);
3280af22
NIS
2266 if (PL_initav)
2267 call_list(oldscope, PL_initav);
6224f72b
GS
2268 }
2269
2270 /* do it */
2271
3280af22 2272 if (PL_restartop) {
533c011a 2273 PL_op = PL_restartop;
3280af22 2274 PL_restartop = 0;
cea2e8a9 2275 CALLRUNOPS(aTHX);
6224f72b 2276 }
3280af22
NIS
2277 else if (PL_main_start) {
2278 CvDEPTH(PL_main_cv) = 1;
533c011a 2279 PL_op = PL_main_start;
cea2e8a9 2280 CALLRUNOPS(aTHX);
6224f72b 2281 }
f6b3007c
JH
2282 my_exit(0);
2283 /* NOTREACHED */
6224f72b
GS
2284}
2285
954c1994 2286/*
ccfc67b7
JH
2287=head1 SV Manipulation Functions
2288
954c1994
GS
2289=for apidoc p||get_sv
2290
2291Returns the SV of the specified Perl scalar. If C<create> is set and the
2292Perl variable does not exist then it will be created. If C<create> is not
2293set and the variable does not exist then NULL is returned.
2294
2295=cut
2296*/
2297
6224f72b 2298SV*
864dbfa3 2299Perl_get_sv(pTHX_ const char *name, I32 create)
6224f72b
GS
2300{
2301 GV *gv;
4d1ff10f 2302#ifdef USE_5005THREADS
6224f72b
GS
2303 if (name[1] == '\0' && !isALPHA(name[0])) {
2304 PADOFFSET tmp = find_threadsv(name);
411caa50 2305 if (tmp != NOT_IN_PAD)
6224f72b 2306 return THREADSV(tmp);
6224f72b 2307 }
4d1ff10f 2308#endif /* USE_5005THREADS */
6224f72b
GS
2309 gv = gv_fetchpv(name, create, SVt_PV);
2310 if (gv)
2311 return GvSV(gv);
2312 return Nullsv;
2313}
2314
954c1994 2315/*
ccfc67b7
JH
2316=head1 Array Manipulation Functions
2317
954c1994
GS
2318=for apidoc p||get_av
2319
2320Returns the AV of the specified Perl array. If C<create> is set and the
2321Perl variable does not exist then it will be created. If C<create> is not
2322set and the variable does not exist then NULL is returned.
2323
2324=cut
2325*/
2326
6224f72b 2327AV*
864dbfa3 2328Perl_get_av(pTHX_ const char *name, I32 create)
6224f72b
GS
2329{
2330 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
2331 if (create)
2332 return GvAVn(gv);
2333 if (gv)
2334 return GvAV(gv);
2335 return Nullav;
2336}
2337
954c1994 2338/*
ccfc67b7
JH
2339=head1 Hash Manipulation Functions
2340
954c1994
GS
2341=for apidoc p||get_hv
2342
2343Returns the HV of the specified Perl hash. If C<create> is set and the
2344Perl variable does not exist then it will be created. If C<create> is not
2345set and the variable does not exist then NULL is returned.
2346
2347=cut
2348*/
2349
6224f72b 2350HV*
864dbfa3 2351Perl_get_hv(pTHX_ const char *name, I32 create)
6224f72b 2352{
890ce7af 2353 GV* const gv = gv_fetchpv(name, create, SVt_PVHV);
a0d0e21e
LW
2354 if (create)
2355 return GvHVn(gv);
2356 if (gv)
2357 return GvHV(gv);
2358 return Nullhv;
2359}
2360
954c1994 2361/*
ccfc67b7
JH
2362=head1 CV Manipulation Functions
2363
954c1994
GS
2364=for apidoc p||get_cv
2365
2366Returns the CV of the specified Perl subroutine. If C<create> is set and
2367the Perl subroutine does not exist then it will be declared (which has the
2368same effect as saying C<sub name;>). If C<create> is not set and the
2369subroutine does not exist then NULL is returned.
2370
2371=cut
2372*/
2373
a0d0e21e 2374CV*
864dbfa3 2375Perl_get_cv(pTHX_ const char *name, I32 create)
a0d0e21e
LW
2376{
2377 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
b099ddc0 2378 /* XXX unsafe for threads if eval_owner isn't held */
f6ec51f7
GS
2379 /* XXX this is probably not what they think they're getting.
2380 * It has the same effect as "sub name;", i.e. just a forward
2381 * declaration! */
8ebc5c01 2382 if (create && !GvCVu(gv))
774d564b 2383 return newSUB(start_subparse(FALSE, 0),
a0d0e21e 2384 newSVOP(OP_CONST, 0, newSVpv(name,0)),
4633a7c4 2385 Nullop,
a0d0e21e
LW
2386 Nullop);
2387 if (gv)
8ebc5c01 2388 return GvCVu(gv);
a0d0e21e
LW
2389 return Nullcv;
2390}
2391
79072805
LW
2392/* Be sure to refetch the stack pointer after calling these routines. */
2393
954c1994 2394/*
ccfc67b7
JH
2395
2396=head1 Callback Functions
2397
954c1994
GS
2398=for apidoc p||call_argv
2399
2400Performs a callback to the specified Perl sub. See L<perlcall>.
2401
2402=cut
2403*/
2404
a0d0e21e 2405I32
8f42b153 2406Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 2407
8ac85365
NIS
2408 /* See G_* flags in cop.h */
2409 /* null terminated arg list */
8990e307 2410{
a0d0e21e 2411 dSP;
8990e307 2412
924508f0 2413 PUSHMARK(SP);
a0d0e21e 2414 if (argv) {
8990e307 2415 while (*argv) {
a0d0e21e 2416 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
8990e307
LW
2417 argv++;
2418 }
a0d0e21e 2419 PUTBACK;
8990e307 2420 }
864dbfa3 2421 return call_pv(sub_name, flags);
8990e307
LW
2422}
2423
954c1994
GS
2424/*
2425=for apidoc p||call_pv
2426
2427Performs a callback to the specified Perl sub. See L<perlcall>.
2428
2429=cut
2430*/
2431
a0d0e21e 2432I32
864dbfa3 2433Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2434 /* name of the subroutine */
2435 /* See G_* flags in cop.h */
a0d0e21e 2436{
864dbfa3 2437 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
a0d0e21e
LW
2438}
2439
954c1994
GS
2440/*
2441=for apidoc p||call_method
2442
2443Performs a callback to the specified Perl method. The blessed object must
2444be on the stack. See L<perlcall>.
2445
2446=cut
2447*/
2448
a0d0e21e 2449I32
864dbfa3 2450Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2451 /* name of the subroutine */
2452 /* See G_* flags in cop.h */
a0d0e21e 2453{
968b3946 2454 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
a0d0e21e
LW
2455}
2456
2457/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2458/*
2459=for apidoc p||call_sv
2460
2461Performs a callback to the Perl sub whose name is in the SV. See
2462L<perlcall>.
2463
2464=cut
2465*/
2466
a0d0e21e 2467I32
864dbfa3 2468Perl_call_sv(pTHX_ SV *sv, I32 flags)
8ac85365 2469 /* See G_* flags in cop.h */
a0d0e21e 2470{
27da23d5 2471 dVAR; dSP;
a0d0e21e 2472 LOGOP myop; /* fake syntax tree node */
968b3946 2473 UNOP method_op;
aa689395 2474 I32 oldmark;
13689cfe 2475 volatile I32 retval = 0;
a0d0e21e 2476 I32 oldscope;
54310121 2477 bool oldcatch = CATCH_GET;
6224f72b 2478 int ret;
533c011a 2479 OP* oldop = PL_op;
db36c5a1 2480 dJMPENV;
1e422769 2481
a0d0e21e
LW
2482 if (flags & G_DISCARD) {
2483 ENTER;
2484 SAVETMPS;
2485 }
2486
aa689395 2487 Zero(&myop, 1, LOGOP);
54310121 2488 myop.op_next = Nullop;
f51d4af5 2489 if (!(flags & G_NOARGS))
aa689395 2490 myop.op_flags |= OPf_STACKED;
54310121
PP
2491 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
2492 (flags & G_ARRAY) ? OPf_WANT_LIST :
2493 OPf_WANT_SCALAR);
462e5cf6 2494 SAVEOP();
533c011a 2495 PL_op = (OP*)&myop;
aa689395 2496
3280af22
NIS
2497 EXTEND(PL_stack_sp, 1);
2498 *++PL_stack_sp = sv;
aa689395 2499 oldmark = TOPMARK;
3280af22 2500 oldscope = PL_scopestack_ix;
a0d0e21e 2501
3280af22 2502 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2503 /* Handle first BEGIN of -d. */
3280af22 2504 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2505 /* Try harder, since this may have been a sighandler, thus
2506 * curstash may be meaningless. */
3280af22 2507 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
491527d0 2508 && !(flags & G_NODEBUG))
533c011a 2509 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 2510
968b3946
GS
2511 if (flags & G_METHOD) {
2512 Zero(&method_op, 1, UNOP);
2513 method_op.op_next = PL_op;
2514 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2515 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
f39d0b86 2516 PL_op = (OP*)&method_op;
968b3946
GS
2517 }
2518
312caa8e 2519 if (!(flags & G_EVAL)) {
0cdb2077 2520 CATCH_SET(TRUE);
14dd3ad8 2521 call_body((OP*)&myop, FALSE);
312caa8e 2522 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2523 CATCH_SET(oldcatch);
312caa8e
CS
2524 }
2525 else {
d78bda3d 2526 myop.op_other = (OP*)&myop;
3280af22 2527 PL_markstack_ptr--;
4633a7c4
LW
2528 /* we're trying to emulate pp_entertry() here */
2529 {
c09156bb 2530 register PERL_CONTEXT *cx;
f54cb97a 2531 const I32 gimme = GIMME_V;
ac27b0f5 2532
4633a7c4
LW
2533 ENTER;
2534 SAVETMPS;
ac27b0f5 2535
1d76a5c3 2536 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
4633a7c4 2537 PUSHEVAL(cx, 0, 0);
533c011a 2538 PL_eval_root = PL_op; /* Only needed so that goto works right. */
ac27b0f5 2539
faef0170 2540 PL_in_eval = EVAL_INEVAL;
4633a7c4 2541 if (flags & G_KEEPERR)
faef0170 2542 PL_in_eval |= EVAL_KEEPERR;
4633a7c4 2543 else
c69006e4 2544 sv_setpvn(ERRSV,"",0);
4633a7c4 2545 }
3280af22 2546 PL_markstack_ptr++;
a0d0e21e 2547
14dd3ad8 2548 JMPENV_PUSH(ret);
6224f72b
GS
2549 switch (ret) {
2550 case 0:
14dd3ad8
GS
2551 redo_body:
2552 call_body((OP*)&myop, FALSE);
312caa8e
CS
2553 retval = PL_stack_sp - (PL_stack_base + oldmark);
2554 if (!(flags & G_KEEPERR))
c69006e4 2555 sv_setpvn(ERRSV,"",0);
a0d0e21e 2556 break;
6224f72b 2557 case 1:
f86702cc 2558 STATUS_ALL_FAILURE;
a0d0e21e 2559 /* FALL THROUGH */
6224f72b 2560 case 2:
a0d0e21e 2561 /* my_exit() was called */
3280af22 2562 PL_curstash = PL_defstash;
a0d0e21e 2563 FREETMPS;
14dd3ad8 2564 JMPENV_POP;
cc3604b1 2565 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2566 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2567 my_exit_jump();
a0d0e21e 2568 /* NOTREACHED */
6224f72b 2569 case 3:
3280af22 2570 if (PL_restartop) {
533c011a 2571 PL_op = PL_restartop;
3280af22 2572 PL_restartop = 0;
312caa8e 2573 goto redo_body;
a0d0e21e 2574 }
3280af22 2575 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2576 if (flags & G_ARRAY)
2577 retval = 0;
2578 else {
2579 retval = 1;
3280af22 2580 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2581 }
312caa8e 2582 break;
a0d0e21e 2583 }
a0d0e21e 2584
3280af22 2585 if (PL_scopestack_ix > oldscope) {
a0a2876f
LW
2586 SV **newsp;
2587 PMOP *newpm;
2588 I32 gimme;
c09156bb 2589 register PERL_CONTEXT *cx;
a0a2876f
LW
2590 I32 optype;
2591
2592 POPBLOCK(cx,newpm);
2593 POPEVAL(cx);
3280af22 2594 PL_curpm = newpm;
a0a2876f 2595 LEAVE;
9d4ba2ae
AL
2596 PERL_UNUSED_VAR(newsp);
2597 PERL_UNUSED_VAR(gimme);
2598 PERL_UNUSED_VAR(optype);
a0d0e21e 2599 }
14dd3ad8 2600 JMPENV_POP;
a0d0e21e 2601 }
1e422769 2602
a0d0e21e 2603 if (flags & G_DISCARD) {
3280af22 2604 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2605 retval = 0;
2606 FREETMPS;
2607 LEAVE;
2608 }
533c011a 2609 PL_op = oldop;
a0d0e21e
LW
2610 return retval;
2611}
2612
312caa8e 2613STATIC void
dd374669 2614S_call_body(pTHX_ const OP *myop, bool is_eval)
312caa8e 2615{
312caa8e
CS
2616 if (PL_op == myop) {
2617 if (is_eval)
f807eda9 2618 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
312caa8e 2619 else
f807eda9 2620 PL_op = Perl_pp_entersub(aTHX); /* this does */
312caa8e
CS
2621 }
2622 if (PL_op)
cea2e8a9 2623 CALLRUNOPS(aTHX);
312caa8e
CS
2624}
2625
6e72f9df 2626/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2627
954c1994
GS
2628/*
2629=for apidoc p||eval_sv
2630
2631Tells Perl to C<eval> the string in the SV.
2632
2633=cut
2634*/
2635
a0d0e21e 2636I32
864dbfa3 2637Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2638
8ac85365 2639 /* See G_* flags in cop.h */
a0d0e21e 2640{
924508f0 2641 dSP;
a0d0e21e 2642 UNOP myop; /* fake syntax tree node */
8fa7f367 2643 volatile I32 oldmark = SP - PL_stack_base;
13689cfe 2644 volatile I32 retval = 0;
6224f72b 2645 int ret;
533c011a 2646 OP* oldop = PL_op;
db36c5a1 2647 dJMPENV;
84902520 2648
4633a7c4
LW
2649 if (flags & G_DISCARD) {
2650 ENTER;
2651 SAVETMPS;
2652 }
2653
462e5cf6 2654 SAVEOP();
533c011a
NIS
2655 PL_op = (OP*)&myop;
2656 Zero(PL_op, 1, UNOP);
3280af22
NIS
2657 EXTEND(PL_stack_sp, 1);
2658 *++PL_stack_sp = sv;
79072805 2659
4633a7c4
LW
2660 if (!(flags & G_NOARGS))
2661 myop.op_flags = OPf_STACKED;
79072805 2662 myop.op_next = Nullop;
6e72f9df 2663 myop.op_type = OP_ENTEREVAL;
54310121
PP
2664 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
2665 (flags & G_ARRAY) ? OPf_WANT_LIST :
2666 OPf_WANT_SCALAR);
6e72f9df
PP
2667 if (flags & G_KEEPERR)
2668 myop.op_flags |= OPf_SPECIAL;
4633a7c4 2669
dedbcade
DM
2670 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2671 * before a PUSHEVAL, which corrupts the stack after a croak */
2672 TAINT_PROPER("eval_sv()");
2673
14dd3ad8 2674 JMPENV_PUSH(ret);
6224f72b
GS
2675 switch (ret) {
2676 case 0:
14dd3ad8
GS
2677 redo_body:
2678 call_body((OP*)&myop,TRUE);
312caa8e
CS
2679 retval = PL_stack_sp - (PL_stack_base + oldmark);
2680 if (!(flags & G_KEEPERR))
c69006e4 2681 sv_setpvn(ERRSV,"",0);
4633a7c4 2682 break;
6224f72b 2683 case 1:
f86702cc 2684 STATUS_ALL_FAILURE;
4633a7c4 2685 /* FALL THROUGH */
6224f72b 2686 case 2:
4633a7c4 2687 /* my_exit() was called */
3280af22 2688 PL_curstash = PL_defstash;
4633a7c4 2689 FREETMPS;
14dd3ad8 2690 JMPENV_POP;
cc3604b1 2691 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2692 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2693 my_exit_jump();
4633a7c4 2694 /* NOTREACHED */
6224f72b 2695 case 3:
3280af22 2696 if (PL_restartop) {
533c011a 2697 PL_op = PL_restartop;
3280af22 2698 PL_restartop = 0;
312caa8e 2699 goto redo_body;
4633a7c4 2700 }
3280af22 2701 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2702 if (flags & G_ARRAY)
2703 retval = 0;
2704 else {
2705 retval = 1;
3280af22 2706 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2707 }
312caa8e 2708 break;
4633a7c4
LW
2709 }
2710
14dd3ad8 2711 JMPENV_POP;
4633a7c4 2712 if (flags & G_DISCARD) {
3280af22 2713 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2714 retval = 0;
2715 FREETMPS;
2716 LEAVE;
2717 }
533c011a 2718 PL_op = oldop;
4633a7c4
LW
2719 return retval;
2720}
2721
954c1994
GS
2722/*
2723=for apidoc p||eval_pv
2724
2725Tells Perl to C<eval> the given string and return an SV* result.
2726
2727=cut
2728*/
2729
137443ea 2730SV*
864dbfa3 2731Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea
PP
2732{
2733 dSP;
2734 SV* sv = newSVpv(p, 0);
2735
864dbfa3 2736 eval_sv(sv, G_SCALAR);
137443ea
PP
2737 SvREFCNT_dec(sv);
2738
2739 SPAGAIN;
2740 sv = POPs;
2741 PUTBACK;
2742
2d8e6c8d 2743 if (croak_on_error && SvTRUE(ERRSV)) {
0510663f 2744 Perl_croak(aTHX_ SvPVx_nolen_const(ERRSV));
2d8e6c8d 2745 }
137443ea
PP
2746
2747 return sv;
2748}
2749
4633a7c4
LW
2750/* Require a module. */
2751
954c1994 2752/*
ccfc67b7
JH
2753=head1 Embedding Functions
2754
954c1994
GS
2755=for apidoc p||require_pv
2756
7d3fb230
BS
2757Tells Perl to C<require> the file named by the string argument. It is
2758analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2759implemented that way; consider using load_module instead.
954c1994 2760
7d3fb230 2761=cut */
954c1994 2762
4633a7c4 2763void
864dbfa3 2764Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2765{
d3acc0f7
JP
2766 SV* sv;
2767 dSP;
e788e7d3 2768 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7 2769 PUTBACK;
be41e5d9
NC
2770 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2771 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7
JP
2772 SPAGAIN;
2773 POPSTACK;
79072805
LW
2774}
2775
79072805 2776void
e1ec3a88 2777Perl_magicname(pTHX_ const char *sym, const char *name, I32 namlen)
79072805
LW
2778{
2779 register GV *gv;
2780
155aba94 2781 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
14befaf4 2782 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
79072805
LW
2783}
2784
76e3520e 2785STATIC void
e1ec3a88 2786S_usage(pTHX_ const char *name) /* XXX move this out into a module ? */
4633a7c4 2787{
ab821d7f 2788 /* This message really ought to be max 23 lines.
75c72d73 2789 * Removed -h because the user already knows that option. Others? */
fb73857a 2790
27da23d5 2791 static const char * const usage_msg[] = {
aefc56c5
SF
2792"-0[octal] specify record separator (\\0, if no argument)",
2793"-A[mod][=pattern] activate all/given assertions",
2794"-a autosplit mode with -n or -p (splits $_ into @F)",
2795"-C[number/list] enables the listed Unicode features",
2796"-c check syntax only (runs BEGIN and CHECK blocks)",
2797"-d[:debugger] run program under debugger",
2798"-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2799"-e program one line of program (several -e's allowed, omit programfile)",
aefc56c5 2800"-f don't do $sitelib/sitecustomize.pl at startup",
aefc56c5
SF
2801"-F/pattern/ split() pattern for -a switch (//'s are optional)",
2802"-i[extension] edit <> files in place (makes backup if extension supplied)",
2803"-Idirectory specify @INC/#include directory (several -I's allowed)",
2804"-l[octal] enable line ending processing, specifies line terminator",
2805"-[mM][-]module execute \"use/no module...\" before executing program",
2806"-n assume \"while (<>) { ... }\" loop around program",
2807"-p assume loop like -n but print line also, like sed",
2808"-P run program through C preprocessor before compilation",
2809"-s enable rudimentary parsing for switches after programfile",
2810"-S look for programfile using PATH environment variable",
2811"-t enable tainting warnings",
2812"-T enable tainting checks",
2813"-u dump core after parsing program",
2814"-U allow unsafe operations",
2815"-v print version, subversion (includes VERY IMPORTANT perl info)",
2816"-V[:variable] print configuration summary (or a single Config.pm variable)",
2817"-w enable many useful warnings (RECOMMENDED)",
2818"-W enable all warnings",
2819"-x[directory] strip off text before #!perl line and perhaps cd to directory",
2820"-X disable all warnings",
fb73857a
PP
2821"\n",
2822NULL
2823};
27da23d5 2824 const char * const *p = usage_msg;
fb73857a 2825
b0e47665
GS
2826 PerlIO_printf(PerlIO_stdout(),
2827 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2828 name);
fb73857a 2829 while (*p)
b0e47665 2830 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
4633a7c4
LW
2831}
2832
b4ab917c
DM
2833/* convert a string of -D options (or digits) into an int.
2834 * sets *s to point to the char after the options */
2835
2836#ifdef DEBUGGING
2837int
e1ec3a88 2838Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 2839{
27da23d5 2840 static const char * const usage_msgd[] = {
e6e64d9b
JC
2841 " Debugging flag values: (see also -d)",
2842 " p Tokenizing and parsing (with v, displays parse stack)",
3679267a 2843 " s Stack snapshots (with v, displays all stacks)",
e6e64d9b
JC
2844 " l Context (loop) stack processing",
2845 " t Trace execution",
2846 " o Method and overloading resolution",
2847 " c String/numeric conversions",
2848 " P Print profiling info, preprocessor command for -P, source file input state",
2849 " m Memory allocation",
2850 " f Format processing",
2851 " r Regular expression parsing and execution",
2852 " x Syntax tree dump",
3679267a 2853 " u Tainting checks",
e6e64d9b
JC
2854 " H Hash dump -- usurps values()",
2855 " X Scratchpad allocation",
2856 " D Cleaning up",
2857 " S Thread synchronization",
2858 " T Tokenising",
2859 " R Include reference counts of dumped variables (eg when using -Ds)",
2860 " J Do not s,t,P-debug (Jump over) opcodes within package DB",
2861 " v Verbose: use in conjunction with other flags",
2862 " C Copy On Write",
2863 " A Consistency checks on internal structures",
3679267a 2864 " q quiet - currently only suppresses the 'EXECUTING' message",
e6e64d9b
JC
2865 NULL
2866 };
b4ab917c
DM
2867 int i = 0;
2868 if (isALPHA(**s)) {
2869 /* if adding extra options, remember to update DEBUG_MASK */
bfed75c6 2870 static const char debopts[] = "psltocPmfrxu HXDSTRJvCAq";
b4ab917c
DM
2871
2872 for (; isALNUM(**s); (*s)++) {
e1ec3a88 2873 const char *d = strchr(debopts,**s);
b4ab917c
DM
2874 if (d)
2875 i |= 1 << (d - debopts);
2876 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
2877 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2878 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
2879 }
2880 }
e6e64d9b 2881 else if (isDIGIT(**s)) {
b4ab917c
DM
2882 i = atoi(*s);
2883 for (; isALNUM(**s); (*s)++) ;
2884 }
ddcf8bc1 2885 else if (givehelp) {
06e869a4 2886 const char *const *p = usage_msgd;
e6e64d9b
JC
2887 while (*p) PerlIO_printf(PerlIO_stdout(), "%s\n", *p++);
2888 }
b4ab917c
DM
2889# ifdef EBCDIC
2890 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
2891 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2892 "-Dp not implemented on this platform\n");
2893# endif
2894 return i;
2895}
2896#endif
2897
79072805
LW
2898/* This routine handles any switches that can be given during run */
2899
2900char *
864dbfa3 2901Perl_moreswitches(pTHX_ char *s)
79072805 2902{
27da23d5 2903 dVAR;
84c133a0 2904 UV rschar;
79072805
LW
2905
2906 switch (*s) {
2907 case '0':
a863c7d1 2908 {
f2095865 2909 I32 flags = 0;
a3b680e6 2910 STRLEN numlen;
f2095865
JH
2911
2912 SvREFCNT_dec(PL_rs);
2913 if (s[1] == 'x' && s[2]) {
a3b680e6 2914 const char *e = s+=2;
f2095865
JH
2915 U8 *tmps;
2916
a3b680e6
AL
2917 while (*e)
2918 e++;
f2095865
JH
2919 numlen = e - s;
2920 flags = PERL_SCAN_SILENT_ILLDIGIT;
2921 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
2922 if (s + numlen < e) {
2923 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
2924 numlen = 0;
2925 s--;
2926 }
2927 PL_rs = newSVpvn("", 0);
c5661c80 2928 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH
2929 tmps = (U8*)SvPVX(PL_rs);
2930 uvchr_to_utf8(tmps, rschar);
2931 SvCUR_set(PL_rs, UNISKIP(rschar));
2932 SvUTF8_on(PL_rs);
2933 }
2934 else {
2935 numlen = 4;
2936 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
2937 if (rschar & ~((U8)~0))
2938 PL_rs = &PL_sv_undef;
2939 else if (!rschar && numlen >= 2)
2940 PL_rs = newSVpvn("", 0);
2941 else {
2942 char ch = (char)rschar;
2943 PL_rs = newSVpvn(&ch, 1);
2944 }
2945 }
800633c3 2946 sv_setsv(get_sv("/", TRUE), PL_rs);
f2095865 2947 return s + numlen;
a863c7d1 2948 }
46487f74 2949 case 'C':
a05d7ebb 2950 s++;
dd374669 2951 PL_unicode = parse_unicode_opts( (const char **)&s );
46487f74 2952 return s;
2304df62 2953 case 'F':
3280af22 2954 PL_minus_F = TRUE;
ebce5377
RGS
2955 PL_splitstr = ++s;
2956 while (*s && !isSPACE(*s)) ++s;
2957 *s = '\0';
2958 PL_splitstr = savepv(PL_splitstr);
2304df62 2959 return s;
79072805 2960 case 'a':
3280af22 2961 PL_minus_a = TRUE;
79072805
LW
2962 s++;
2963 return s;
2964 case 'c':
3280af22 2965 PL_minus_c = TRUE;
79072805
LW
2966 s++;
2967 return s;
2968 case 'd':
bbce6d69 2969 forbid_setid("-d");
4633a7c4 2970 s++;
2cbb2ee1
RGS
2971
2972 /* -dt indicates to the debugger that threads will be used */
2973 if (*s == 't' && !isALNUM(s[1])) {
2974 ++s;
2975 my_setenv("PERL5DB_THREADED", "1");
2976 }
2977
70c94a19
RR
2978 /* The following permits -d:Mod to accepts arguments following an =
2979 in the fashion that -MSome::Mod does. */
2980 if (*s == ':' || *s == '=') {
06b5626a 2981 const char *start;
70c94a19
RR
2982 SV *sv;
2983 sv = newSVpv("use Devel::", 0);
2984 start = ++s;
2985 /* We now allow -d:Module=Foo,Bar */
2986 while(isALNUM(*s) || *s==':') ++s;
2987 if (*s != '=')
2988 sv_catpv(sv, start);
2989 else {
2990 sv_catpvn(sv, start, s-start);
0c5a913d 2991 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q%c%s%c)", 0, ++s, 0);
70c94a19 2992 }
4633a7c4 2993 s += strlen(s);
184f32ec 2994 my_setenv("PERL5DB", SvPV_nolen_const(sv));
4633a7c4 2995 }
ed094faf 2996 if (!PL_perldb) {
3280af22 2997 PL_perldb = PERLDB_ALL;
a0d0e21e 2998 init_debugger();
ed094faf 2999 }
79072805
LW
3000 return s;
3001 case 'D':
0453d815 3002 {
79072805 3003#ifdef DEBUGGING
bbce6d69 3004 forbid_setid("-D");
b4ab917c 3005 s++;
dd374669 3006 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3007#else /* !DEBUGGING */
0453d815 3008 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3009 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3010 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
a0d0e21e 3011 for (s++; isALNUM(*s); s++) ;
79072805 3012#endif
79072805 3013 return s;
0453d815 3014 }
4633a7c4 3015 case 'h':
ac27b0f5 3016 usage(PL_origargv[0]);
7ca617d0 3017 my_exit(0);
79072805 3018 case 'i':
43c5f42d 3019 Safefree(PL_inplace);
c030f24b
GH
3020#if defined(__CYGWIN__) /* do backup extension automagically */
3021 if (*(s+1) == '\0') {
3022 PL_inplace = savepv(".bak");
3023 return s+1;
3024 }
3025#endif /* __CYGWIN__ */
3280af22 3026 PL_inplace = savepv(s+1);
a6e20a40
AL
3027 for (s = PL_inplace; *s && !isSPACE(*s); s++)
3028 ;
7b8d334a 3029 if (*s) {
fb73857a 3030 *s++ = '\0';
7b8d334a
GS
3031 if (*s == '-') /* Additional switches on #! line. */
3032 s++;
3033 }
fb73857a 3034 return s;
4e49a025 3035 case 'I': /* -I handled both here and in parse_body() */
bbce6d69 3036 forbid_setid("-I");
fb73857a
PP
3037 ++s;
3038 while (*s && isSPACE(*s))
3039 ++s;
3040 if (*s) {
774d564b 3041 char *e, *p;
0df16ed7
GS
3042 p = s;
3043 /* ignore trailing spaces (possibly followed by other switches) */
3044 do {
3045 for (e = p; *e && !isSPACE(*e); e++) ;
3046 p = e;
3047 while (isSPACE(*p))
3048 p++;
3049 } while (*p && *p != '-');
3050 e = savepvn(s, e-s);
88fe16b2 3051 incpush(e, TRUE, TRUE, FALSE, FALSE);
0df16ed7
GS
3052 Safefree(e);
3053 s = p;
3054 if (*s == '-')
3055 s++;
79072805
LW
3056 }
3057 else
a67e862a 3058 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3059 return s;
79072805 3060 case 'l':
3280af22 3061 PL_minus_l = TRUE;
79072805 3062 s++;
7889fe52
NIS
3063 if (PL_ors_sv) {
3064 SvREFCNT_dec(PL_ors_sv);
3065 PL_ors_sv = Nullsv;
3066 }
79072805 3067 if (isDIGIT(*s)) {
53305cf1 3068 I32 flags = 0;
a3b680e6 3069 STRLEN numlen;
7889fe52 3070 PL_ors_sv = newSVpvn("\n",1);
53305cf1
NC
3071 numlen = 3 + (*s == '0');
3072 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3073 s += numlen;
3074 }
3075 else {
8bfdd7d9 3076 if (RsPARA(PL_rs)) {
7889fe52
NIS
3077 PL_ors_sv = newSVpvn("\n\n",2);
3078 }
3079 else {
8bfdd7d9 3080 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3081 }
79072805
LW
3082 }
3083 return s;
06492da6
SF
3084 case 'A':
3085 forbid_setid("-A");
930366bd
RGS
3086 if (!PL_preambleav)
3087 PL_preambleav = newAV();
aefc56c5
SF
3088 s++;
3089 {
44f8325f
AL
3090 char * const start = s;
3091 SV * const sv = newSVpv("use assertions::activate", 24);
aefc56c5
SF
3092 while(isALNUM(*s) || *s == ':') ++s;
3093 if (s != start) {
3094 sv_catpvn(sv, "::", 2);
3095 sv_catpvn(sv, start, s-start);
3096 }
3097 if (*s == '=') {
0c5a913d 3098 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q%c%s%c)", 0, ++s, 0);
aefc56c5
SF
3099 s+=strlen(s);
3100 }
3101 else if (*s != '\0') {
551405c4 3102 Perl_croak(aTHX_ "Can't use '%c' after -A%.*s", *s, (int)(s-start), start);
aefc56c5 3103 }
06492da6 3104 av_push(PL_preambleav, sv);
aefc56c5 3105 return s;
06492da6 3106 }
1a30305b 3107 case 'M':
bbce6d69 3108 forbid_setid("-M"); /* XXX ? */
1a30305b
PP
3109 /* FALL THROUGH */
3110 case 'm':
bbce6d69 3111 forbid_setid("-m"); /* XXX ? */
1a30305b 3112 if (*++s) {
a5f75d66 3113 char *start;
11343788 3114 SV *sv;
e1ec3a88 3115 const char *use = "use ";
a5f75d66 3116 /* -M-foo == 'no foo' */
d0043bd1
NC
3117 /* Leading space on " no " is deliberate, to make both
3118 possibilities the same length. */
3119 if (*s == '-') { use = " no "; ++s; }
3120 sv = newSVpvn(use,4);
a5f75d66 3121 start = s;
1a30305b 3122 /* We allow -M'Module qw(Foo Bar)' */
c07a80fd
PP
3123 while(isALNUM(*s) || *s==':') ++s;
3124 if (*s != '=') {
11343788 3125 sv_catpv(sv, start);
c07a80fd
PP
3126 if (*(start-1) == 'm') {
3127 if (*s != '\0')
cea2e8a9 3128 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
11343788 3129 sv_catpv( sv, " ()");
c07a80fd
PP
3130 }
3131 } else {
6df41af2 3132 if (s == start)
be98fb35
GS
3133 Perl_croak(aTHX_ "Module name required with -%c option",
3134 s[-1]);
11343788 3135 sv_catpvn(sv, start, s-start);
3d27e215
LM
3136 sv_catpv(sv, " split(/,/,q");
3137 sv_catpvn(sv, "\0)", 1); /* Use NUL as q//-delimiter. */
11343788 3138 sv_catpv(sv, ++s);
3d27e215 3139 sv_catpvn(sv, "\0)", 2);
c07a80fd 3140 }
1a30305b 3141 s += strlen(s);
5c831c24 3142 if (!PL_preambleav)
3280af22
NIS
3143 PL_preambleav = newAV();
3144 av_push(PL_preambleav, sv);
1a30305b
PP
3145 }
3146 else
9e81e6a1 3147 Perl_croak(aTHX_ "Missing argument to -%c", *(s-1));
1a30305b 3148 return s;
79072805 3149 case 'n':
3280af22 3150 PL_minus_n = TRUE;
79072805
LW
3151 s++;
3152 return s;
3153 case 'p':
3280af22 3154 PL_minus_p = TRUE;
79072805
LW
3155 s++;
3156 return s;
3157 case 's':
bbce6d69 3158 forbid_setid("-s");
3280af22 3159 PL_doswitches = TRUE;
79072805
LW
3160 s++;
3161 return s;
6537fe72
MS
3162 case 't':
3163 if (!PL_tainting)
22f7c9c9 3164 TOO_LATE_FOR('t');
6537fe72
MS
3165 s++;
3166 return s;
463ee0b2 3167 case 'T':
3280af22 3168 if (!PL_tainting)
22f7c9c9 3169 TOO_LATE_FOR('T');
463ee0b2
LW
3170 s++;
3171 return s;
79072805 3172 case 'u':
bf4acbe4
GS
3173#ifdef MACOS_TRADITIONAL
3174 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
3175#endif
3280af22 3176 PL_do_undump = TRUE;
79072805
LW
3177 s++;
3178 return s;
3179 case 'U':
3280af22 3180 PL_unsafe = TRUE;
79072805
LW
3181 s++;
3182 return s;
3183 case 'v':
d7aa5382
JP
3184 if (!sv_derived_from(PL_patchlevel, "version"))
3185 (void *)upg_version(PL_patchlevel);
8e9464f1 3186#if !defined(DGUX)
b0e47665 3187 PerlIO_printf(PerlIO_stdout(),
52ea0aec 3188 Perl_form(aTHX_ "\nThis is perl, %"SVf" built for %s",
d7aa5382
JP
3189 vstringify(PL_patchlevel),
3190 ARCHNAME));
8e9464f1
JH
3191#else /* DGUX */
3192/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3193 PerlIO_printf(PerlIO_stdout(),
52ea0aec 3194 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
d7aa5382 3195 vstringify(PL_patchlevel)));
8e9464f1
JH
3196 PerlIO_printf(PerlIO_stdout(),
3197 Perl_form(aTHX_ " built under %s at %s %s\n",
3198 OSNAME, __DATE__, __TIME__));
3199 PerlIO_printf(PerlIO_stdout(),
3200 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 3201 OSVERS));
8e9464f1
JH
3202#endif /* !DGUX */
3203
fb73857a
PP
3204#if defined(LOCAL_PATCH_COUNT)
3205 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS
3206 PerlIO_printf(PerlIO_stdout(),
3207 "\n(with %d registered patch%s, "
3208 "see perl -V for more detail)",
3209 (int)LOCAL_PATCH_COUNT,
3210 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 3211#endif
1a30305b 3212
b0e47665 3213 PerlIO_printf(PerlIO_stdout(),
359b00fe 3214 "\n\nCopyright 1987-2005, Larry Wall\n");
eae9c151
JH
3215#ifdef MACOS_TRADITIONAL
3216 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3217 "\nMac OS port Copyright 1991-2002, Matthias Neeracher;\n"
03765510 3218 "maintained by Chris Nandor\n");
eae9c151 3219#endif
79072805 3220#ifdef MSDOS
b0e47665
GS
3221 PerlIO_printf(PerlIO_stdout(),
3222 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff
PP
3223#endif
3224#ifdef DJGPP
b0e47665
GS
3225 PerlIO_printf(PerlIO_stdout(),
3226 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3227 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 3228#endif
79072805 3229#ifdef OS2
b0e47665
GS
3230 PerlIO_printf(PerlIO_stdout(),
3231 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
be3c0a43 3232 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
79072805 3233#endif
79072805 3234#ifdef atarist
b0e47665
GS
3235 PerlIO_printf(PerlIO_stdout(),
3236 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 3237#endif
a3f9223b 3238#ifdef __BEOS__
b0e47665
GS
3239 PerlIO_printf(PerlIO_stdout(),
3240 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 3241#endif
1d84e8df 3242#ifdef MPE
b0e47665 3243 PerlIO_printf(PerlIO_stdout(),
e583a879 3244 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n");
1d84e8df 3245#endif
9d116dd7 3246#ifdef OEMVS
b0e47665
GS
3247 PerlIO_printf(PerlIO_stdout(),
3248 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 3249#endif
495c5fdc 3250#ifdef __VOS__
b0e47665 3251 PerlIO_printf(PerlIO_stdout(),
94efb9fb 3252 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
495c5fdc 3253#endif
092bebab 3254#ifdef __OPEN_VM
b0e47665
GS
3255 PerlIO_printf(PerlIO_stdout(),
3256 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 3257#endif
a1a0e61e 3258#ifdef POSIX_BC
b0e47665
GS
3259 PerlIO_printf(PerlIO_stdout(),
3260 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 3261#endif
61ae2fbf 3262#ifdef __MINT__
b0e47665
GS
3263 PerlIO_printf(PerlIO_stdout(),
3264 "MiNT port by Guido Flohr, 1997-1999\n");
61ae2fbf 3265#endif
f83d2536 3266#ifdef EPOC
b0e47665 3267 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3268 "EPOC port by Olaf Flebbe, 1999-2002\n");
f83d2536 3269#endif
e1caacb4 3270#ifdef UNDER_CE
b475b3e6
JH
3271 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
3272 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
e1caacb4
JH
3273 wce_hitreturn();
3274#endif
a0fd4948 3275#ifdef __SYMBIAN32__
27da23d5
JH
3276 PerlIO_printf(PerlIO_stdout(),
3277 "Symbian port by Nokia, 2004-2005\n");
3278#endif
baed7233
DL
3279#ifdef BINARY_BUILD_NOTICE
3280 BINARY_BUILD_NOTICE;
3281#endif
b0e47665
GS
3282 PerlIO_printf(PerlIO_stdout(),
3283 "\n\
79072805 3284Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 3285GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687 3286Complete documentation for Perl, including FAQ lists, should be found on\n\
a0288114 3287this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
c9e30dd8 3288Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
7ca617d0 3289 my_exit(0);
79072805 3290 case 'w':
599cee73 3291 if (! (PL_dowarn & G_WARN_ALL_MASK))
ac27b0f5 3292 PL_dowarn |= G_WARN_ON;
599cee73
PM
3293 s++;
3294 return s;
3295 case 'W':
ac27b0f5 3296 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
317ea90d
MS
3297 if (!specialWARN(PL_compiling.cop_warnings))
3298 SvREFCNT_dec(PL_compiling.cop_warnings);
d3a7d8c7 3299 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM
3300 s++;
3301 return s;
3302 case 'X':
ac27b0f5 3303 PL_dowarn = G_WARN_ALL_OFF;
317ea90d
MS
3304 if (!specialWARN(PL_compiling.cop_warnings))
3305 SvREFCNT_dec(PL_compiling.cop_warnings);
d3a7d8c7 3306 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW
3307 s++;
3308 return s;
a0d0e21e 3309 case '*':
79072805
LW
3310 case ' ':
3311 if (s[1] == '-') /* Additional switches on #! line. */
3312 return s+2;
3313 break;
a0d0e21e 3314 case '-':
79072805 3315 case 0:
51882d45 3316#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS
3317 case '\r':
3318#endif
79072805
LW
3319 case '\n':
3320 case '\t':
3321 break;
aa689395
PP
3322#ifdef ALTERNATE_SHEBANG
3323 case 'S': /* OS/2 needs -S on "extproc" line. */
3324 break;
3325#endif
a0d0e21e 3326 case 'P':
3280af22 3327 if (PL_preprocess)
a0d0e21e
LW
3328 return s+1;
3329 /* FALL THROUGH */
79072805 3330 default:
cea2e8a9 3331 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805
LW
3332 }
3333 return Nullch;
3334}
3335
3336/* compliments of Tom Christiansen */
3337
3338/* unexec() can be found in the Gnu emacs distribution */
ee580363 3339/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW
3340
3341void
864dbfa3 3342Perl_my_unexec(pTHX)
79072805
LW
3343{
3344#ifdef UNEXEC
46fc3d4c
PP
3345 SV* prog;
3346 SV* file;
ee580363 3347 int status = 1;
79072805
LW
3348 extern int etext;
3349
ee580363 3350 prog = newSVpv(BIN_EXP, 0);
46fc3d4c 3351 sv_catpv(prog, "/perl");
6b88bc9c 3352 file = newSVpv(PL_origfilename, 0);
46fc3d4c 3353 sv_catpv(file, ".perldump");
79072805 3354
ee580363
GS
3355 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3356 /* unexec prints msg to stderr in case of failure */
6ad3d225 3357 PerlProc_exit(status);
79072805 3358#else
a5f75d66
AD
3359# ifdef VMS
3360# include <lib$routines.h>
3361 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
aa689395 3362# else
79072805 3363 ABORT(); /* for use with undump */
aa689395 3364# endif
a5f75d66 3365#endif
79072805
LW
3366}
3367
cb68f92d
GS
3368/* initialize curinterp */
3369STATIC void
cea2e8a9 3370S_init_interp(pTHX)
cb68f92d
GS
3371{
3372
acfe0abc
GS
3373#ifdef MULTIPLICITY
3374# define PERLVAR(var,type)
3375# define PERLVARA(var,n,type)
3376# if defined(PERL_IMPLICIT_CONTEXT)
3377# if defined(USE_5005THREADS)
3378# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
27da23d5 3379# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
acfe0abc
GS
3380# else /* !USE_5005THREADS */
3381# define PERLVARI(var,type,init) aTHX->var = init;
3382# define PERLVARIC(var,type,init) aTHX->var = init;
3383# endif /* USE_5005THREADS */
3967c732 3384# else
acfe0abc
GS
3385# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
3386# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
066ef5b5 3387# endif
acfe0abc
GS
3388# include "intrpvar.h"
3389# ifndef USE_5005THREADS
3390# include "thrdvar.h"
3391# endif
3392# undef PERLVAR
3393# undef PERLVARA
3394# undef PERLVARI
3395# undef PERLVARIC
3396#else
3397# define PERLVAR(var,type)
3398# define PERLVARA(var,n,type)
3399# define PERLVARI(var,type,init) PL_##var = init;
3400# define PERLVARIC(var,type,init) PL_##var = init;
3401# include "intrpvar.h"
3402# ifndef USE_5005THREADS
3403# include "thrdvar.h"
3404# endif
3405# undef PERLVAR
3406# undef PERLVARA
3407# undef PERLVARI
3408# undef PERLVARIC
cb68f92d
GS
3409#endif
3410
cb68f92d
GS
3411}
3412
76e3520e 3413STATIC void
cea2e8a9 3414S_init_main_stash(pTHX)
79072805 3415{
463ee0b2 3416 GV *gv;
6e72f9df 3417
3280af22 3418 PL_curstash = PL_defstash = newHV();
79cb57f6 3419 PL_curstname = newSVpvn("main",4);
adbc6bb1
LW
3420 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
3421 SvREFCNT_dec(GvHV(gv));
3280af22 3422 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
463ee0b2 3423 SvREADONLY_on(gv);
51a37f80 3424 hv_name_set(PL_defstash, "main", 4, 0);
3280af22
NIS
3425 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
3426 GvMULTI_on(PL_incgv);
3427 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
3428 GvMULTI_on(PL_hintgv);
3429 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
3430 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
3431 GvMULTI_on(PL_errgv);
3432 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
3433 GvMULTI_on(PL_replgv);
cea2e8a9 3434 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
c69033f2
NC
3435#ifdef PERL_DONT_CREATE_GVSV
3436 gv_SVadd(PL_errgv);
3437#endif
38a03e6e
MB
3438 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
3439 sv_setpvn(ERRSV, "", 0);
3280af22 3440 PL_curstash = PL_defstash;
11faa288 3441 CopSTASH_set(&PL_compiling, PL_defstash);
ed094faf 3442 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
3280af22 3443 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
4633a7c4 3444 /* We must init $/ before switches are processed. */
864dbfa3 3445 sv_setpvn(get_sv("/", TRUE), "\n", 1);
79072805
LW
3446}
3447
ae3f3efd 3448/* PSz 18 Nov 03 fdscript now global but do not change prototype */
76e3520e 3449STATIC void
dd374669 3450S_open_script(pTHX_ const char *scriptname, bool dosearch, SV *sv)
79072805 3451{
ae3f3efd 3452#ifndef IAMSUID
e1ec3a88
AL
3453 const char *quote;
3454 const char *code;
3455 const char *cpp_discard_flag;
3456 const char *perl;
ae3f3efd 3457#endif
27da23d5 3458 dVAR;
1b24ed4b 3459
ae3f3efd
PS
3460 PL_fdscript = -1;
3461 PL_suidscript = -1;
79072805 3462
3280af22 3463 if (PL_e_script) {
ff5bdd37 3464 PL_origfilename = savepvn("-e", 2);
96436eeb 3465 }
6c4ab083
GS
3466 else {
3467 /* if find_script() returns, it returns a malloc()-ed value */
dd374669 3468 scriptname = PL_origfilename = find_script(scriptname, dosearch, NULL, 1);
6c4ab083
GS
3469
3470 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
e1ec3a88 3471 const char *s = scriptname + 8;
ae3f3efd 3472 PL_fdscript = atoi(s);
6c4ab083
GS
3473 while (isDIGIT(*s))
3474 s++;
3475 if (*s) {
ae3f3efd
PS
3476 /* PSz 18 Feb 04
3477 * Tell apart "normal" usage of fdscript, e.g.
3478 * with bash on FreeBSD:
3479 * perl <( echo '#!perl -DA'; echo 'print "$0\n"')
3480 * from usage in suidperl.
3481 * Does any "normal" usage leave garbage after the number???
3482 * Is it a mistake to use a similar /dev/fd/ construct for
3483 * suidperl?
3484 */
3485 PL_suidscript = 1;
3486 /* PSz 20 Feb 04
3487 * Be supersafe and do some sanity-checks.
3488 * Still, can we be sure we got the right thing?
3489 */
3490 if (*s != '/') {
3491 Perl_croak(aTHX_ "Wrong syntax (suid) fd script name \"%s\"\n", s);
3492 }
3493 if (! *(s+1)) {
3494 Perl_croak(aTHX_ "Missing (suid) fd script name\n");
3495 }
6c4ab083 3496 scriptname = savepv(s + 1);
3280af22 3497 Safefree(PL_origfilename);
dd374669 3498 PL_origfilename = (char *)scriptname;
6c4ab083
GS
3499 }
3500 }
3501 }
3502
05ec9bb3 3503 CopFILE_free(PL_curcop);
57843af0 3504 CopFILE_set(PL_curcop, PL_origfilename);
770526c1 3505 if (*PL_origfilename == '-' && PL_origfilename[1] == '\0')
dd374669 3506 scriptname = (char *)"";
ae3f3efd
PS
3507 if (PL_fdscript >= 0) {
3508 PL_rsfp = PerlIO_fdopen(PL_fdscript,PERL_SCRIPT_MODE);
1b24ed4b
MS
3509# if defined(HAS_FCNTL) && defined(F_SETFD)
3510 if (PL_rsfp)
3511 /* ensure close-on-exec */
3512 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1);
3513# endif
96436eeb 3514 }
ae3f3efd
PS
3515#ifdef IAMSUID
3516 else {
86207487
NC
3517 Perl_croak(aTHX_ "sperl needs fd script\n"
3518 "You should not call sperl directly; do you need to "
3519 "change a #! line\nfrom sperl to perl?\n");
3520
ae3f3efd
PS
3521/* PSz 11 Nov 03
3522 * Do not open (or do other fancy stuff) while setuid.
3523 * Perl does the open, and hands script to suidperl on a fd;
3524 * suidperl only does some checks, sets up UIDs and re-execs
3525 * perl with that fd as it has always done.
3526 */
3527 }
3528 if (PL_suidscript != 1) {
3529 Perl_croak(aTHX_ "suidperl needs (suid) fd script\n");
3530 }
3531#else /* IAMSUID */
3280af22 3532 else if (PL_preprocess) {
dd374669 3533 const char *cpp_cfg = CPPSTDIN;
79cb57f6 3534 SV *cpp = newSVpvn("",0);
46fc3d4c
PP
3535 SV *cmd = NEWSV(0,0);
3536
ae58f265
JH
3537 if (cpp_cfg[0] == 0) /* PERL_MICRO? */
3538 Perl_croak(aTHX_ "Can't run with cpp -P with CPPSTDIN undefined");
46fc3d4c 3539 if (strEQ(cpp_cfg, "cppstdin"))
cea2e8a9 3540 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
46fc3d4c 3541 sv_catpv(cpp, cpp_cfg);
79072805 3542
1b24ed4b
MS
3543# ifndef VMS
3544 sv_catpvn(sv, "-I", 2);
3545 sv_catpv(sv,PRIVLIB_EXP);
3546# endif
46fc3d4c 3547
14953ddc
MB
3548 DEBUG_P(PerlIO_printf(Perl_debug_log,
3549 "PL_preprocess: scriptname=\"%s\", cpp=\"%s\", sv=\"%s\", CPPMINUS=\"%s\"\n",
848ef955
NC
3550 scriptname, SvPVX_const (cpp), SvPVX_const (sv),
3551 CPPMINUS));
1b24ed4b
MS
3552
3553# if defined(MSDOS) || defined(WIN32) || defined(VMS)
3554 quote = "\"";
3555# else
3556 quote = "'";
3557# endif
3558