4 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
5 * 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
6 * by Larry Wall and others
8 * You may distribute under the terms of either the GNU General Public
9 * License or the Artistic License, as specified in the README file.
14 * A ship then new they built for him
15 * of mithril and of elven-glass
16 * --from Bilbo's song of EƤrendil
18 * [p.236 of _The Lord of the Rings_, II/i: "Many Meetings"]
21 /* This file contains the top-level functions that are used to create, use
22 * and destroy a perl interpreter, plus the functions used by XS code to
23 * call back into perl. Note that it does not contain the actual main()
24 * function of the interpreter; that can be found in perlmain.c
27 #if defined(PERL_IS_MINIPERL) && !defined(USE_SITECUSTOMIZE)
28 # define USE_SITECUSTOMIZE
32 #define PERL_IN_PERL_C
34 #include "patchlevel.h" /* for local_patches */
41 #ifdef USE_KERN_PROC_PATHNAME
42 # include <sys/sysctl.h>
45 #ifdef USE_NSGETEXECUTABLEPATH
46 # include <mach-o/dyld.h>
49 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
56 char control[CMSG_SPACE(sizeof(int))];
73 #if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
74 char *getenv (char *); /* Usually in <stdlib.h> */
77 static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
79 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
80 # define validate_suid(rsfp) NOOP
82 # define validate_suid(rsfp) S_validate_suid(aTHX_ rsfp)
85 #define CALL_BODY_SUB(myop) \
86 if (PL_op == (myop)) \
87 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); \
91 #define CALL_LIST_BODY(cv) \
92 PUSHMARK(PL_stack_sp); \
93 call_sv(MUTABLE_SV((cv)), G_EVAL|G_DISCARD|G_VOID);
96 S_init_tls_and_interp(PerlInterpreter *my_perl)
100 PERL_SET_INTERP(my_perl);
101 #if defined(USE_ITHREADS)
104 PERL_SET_THX(my_perl);
108 MUTEX_INIT(&PL_dollarzero_mutex);
109 MUTEX_INIT(&PL_my_ctx_mutex);
112 #if defined(USE_ITHREADS)
115 /* This always happens for non-ithreads */
118 PERL_SET_THX(my_perl);
123 /* these implement the PERL_SYS_INIT, PERL_SYS_INIT3, PERL_SYS_TERM macros */
126 Perl_sys_init(int* argc, char*** argv)
130 PERL_ARGS_ASSERT_SYS_INIT;
132 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
133 PERL_UNUSED_ARG(argv);
134 PERL_SYS_INIT_BODY(argc, argv);
138 Perl_sys_init3(int* argc, char*** argv, char*** env)
142 PERL_ARGS_ASSERT_SYS_INIT3;
144 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
145 PERL_UNUSED_ARG(argv);
146 PERL_UNUSED_ARG(env);
147 PERL_SYS_INIT3_BODY(argc, argv, env);
154 if (!PL_veto_cleanup) {
155 PERL_SYS_TERM_BODY();
160 #ifdef PERL_IMPLICIT_SYS
162 perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
163 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
164 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
165 struct IPerlDir* ipD, struct IPerlSock* ipS,
166 struct IPerlProc* ipP)
168 PerlInterpreter *my_perl;
170 PERL_ARGS_ASSERT_PERL_ALLOC_USING;
172 /* Newx() needs interpreter, so call malloc() instead */
173 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
174 S_init_tls_and_interp(my_perl);
175 Zero(my_perl, 1, PerlInterpreter);
185 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
192 =head1 Embedding Functions
194 =for apidoc perl_alloc
196 Allocates a new Perl interpreter. See L<perlembed>.
204 PerlInterpreter *my_perl;
206 /* Newx() needs interpreter, so call malloc() instead */
207 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
209 S_init_tls_and_interp(my_perl);
210 #ifndef PERL_TRACK_MEMPOOL
211 return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter);
213 Zero(my_perl, 1, PerlInterpreter);
214 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
218 #endif /* PERL_IMPLICIT_SYS */
221 =for apidoc perl_construct
223 Initializes a new Perl interpreter. See L<perlembed>.
229 perl_construct(pTHXx)
233 PERL_ARGS_ASSERT_PERL_CONSTRUCT;
237 PL_perl_destruct_level = 1;
239 PERL_UNUSED_ARG(my_perl);
240 if (PL_perl_destruct_level > 0)
243 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
247 SvREADONLY_on(&PL_sv_placeholder);
248 SvREFCNT(&PL_sv_placeholder) = (~(U32)0)/2;
250 PL_sighandlerp = (Sighandler_t) Perl_sighandler;
251 #ifdef PERL_USES_PL_PIDSTATUS
252 PL_pidstatus = newHV();
255 PL_rs = newSVpvs("\n");
265 SET_NUMERIC_STANDARD();
267 #if defined(LOCAL_PATCH_COUNT)
268 PL_localpatches = local_patches; /* For possible -v */
271 #ifdef HAVE_INTERP_INTERN
275 PerlIO_init(aTHX); /* Hook to IO system */
277 PL_fdpid = newAV(); /* for remembering popen pids by fd */
278 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
279 PL_errors = newSVpvs("");
280 sv_setpvs(PERL_DEBUG_PAD(0), ""); /* For regex debugging. */
281 sv_setpvs(PERL_DEBUG_PAD(1), ""); /* ext/re needs these */
282 sv_setpvs(PERL_DEBUG_PAD(2), ""); /* even without DEBUGGING. */
284 /* First entry is a list of empty elements. It needs to be initialised
285 else all hell breaks loose in S_find_uninit_var(). */
286 Perl_av_create_and_push(aTHX_ &PL_regex_padav, newSVpvs(""));
287 PL_regex_pad = AvARRAY(PL_regex_padav);
288 Newxz(PL_stashpad, PL_stashpadmax, HV *);
290 #ifdef USE_REENTRANT_API
291 Perl_reentrant_init(aTHX);
294 /* Note that strtab is a rather special HV. Assumptions are made
295 about not iterating on it, and not adding tie magic to it.
296 It is properly deallocated in perl_destruct() */
299 HvSHAREKEYS_off(PL_strtab); /* mandatory */
300 hv_ksplit(PL_strtab, 512);
302 #if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
303 _dyld_lookup_and_bind
304 ("__environ", (unsigned long *) &environ_pointer, NULL);
308 # ifdef USE_ENVIRON_ARRAY
309 PL_origenviron = environ;
313 /* Use sysconf(_SC_CLK_TCK) if available, if not
314 * available or if the sysconf() fails, use the HZ.
315 * BeOS has those, but returns the wrong value.
316 * The HZ if not originally defined has been by now
317 * been defined as CLK_TCK, if available. */
318 #if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK) && !defined(__BEOS__)
319 PL_clocktick = sysconf(_SC_CLK_TCK);
320 if (PL_clocktick <= 0)
324 PL_stashcache = newHV();
326 PL_patchlevel = newSVpvs("v" PERL_VERSION_STRING);
327 PL_apiversion = newSVpvs("v" PERL_API_VERSION_STRING);
330 if (!PL_mmap_page_size) {
331 #if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
333 SETERRNO(0, SS_NORMAL);
335 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
337 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
339 if ((long) PL_mmap_page_size < 0) {
341 SV * const error = ERRSV;
342 SvUPGRADE(error, SVt_PV);
343 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
346 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
350 # ifdef HAS_GETPAGESIZE
351 PL_mmap_page_size = getpagesize();
353 # if defined(I_SYS_PARAM) && defined(PAGESIZE)
354 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
358 if (PL_mmap_page_size <= 0)
359 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
360 (IV) PL_mmap_page_size);
362 #endif /* HAS_MMAP */
364 #if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
365 PL_timesbase.tms_utime = 0;
366 PL_timesbase.tms_stime = 0;
367 PL_timesbase.tms_cutime = 0;
368 PL_timesbase.tms_cstime = 0;
371 PL_osname = Perl_savepvn(aTHX_ STR_WITH_LEN(OSNAME));
373 PL_registered_mros = newHV();
374 /* Start with 1 bucket, for DFS. It's unlikely we'll need more. */
375 HvMAX(PL_registered_mros) = 0;
381 =for apidoc nothreadhook
383 Stub that provides thread hook for perl_destruct when there are
390 Perl_nothreadhook(pTHX)
396 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
398 Perl_dump_sv_child(pTHX_ SV *sv)
401 const int sock = PL_dumper_fd;
402 const int debug_fd = PerlIO_fileno(Perl_debug_log);
403 union control_un control;
406 struct cmsghdr *cmptr;
408 unsigned char buffer[256];
410 PERL_ARGS_ASSERT_DUMP_SV_CHILD;
412 if(sock == -1 || debug_fd == -1)
415 PerlIO_flush(Perl_debug_log);
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.) */
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 */
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;
437 vec[0].iov_base = (void*)&sv;
438 vec[0].iov_len = sizeof(sv);
439 got = sendmsg(sock, &msg, 0);
442 perror("Debug leaking scalars parent sendmsg failed");
445 if(got < sizeof(sv)) {
446 perror("Debug leaking scalars parent short sendmsg");
450 /* Return protocol is
452 unsigned char: length of location string (0 for empty)
453 unsigned char*: string (not terminated)
455 vec[0].iov_base = (void*)&returned_errno;
456 vec[0].iov_len = sizeof(returned_errno);
457 vec[1].iov_base = buffer;
460 got = readv(sock, vec, 2);
463 perror("Debug leaking scalars parent read failed");
464 PerlIO_flush(PerlIO_stderr());
467 if(got < sizeof(returned_errno) + 1) {
468 perror("Debug leaking scalars parent short read");
469 PerlIO_flush(PerlIO_stderr());
474 got = read(sock, buffer + 1, *buffer);
476 perror("Debug leaking scalars parent read 2 failed");
477 PerlIO_flush(PerlIO_stderr());
482 perror("Debug leaking scalars parent short read 2");
483 PerlIO_flush(PerlIO_stderr());
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));
497 =for apidoc perl_destruct
499 Shuts down a Perl interpreter. See L<perlembed>.
508 VOL signed char destruct_level; /* see possible values in intrpvar.h */
510 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
514 PERL_ARGS_ASSERT_PERL_DESTRUCT;
516 PERL_UNUSED_ARG(my_perl);
519 assert(PL_scopestack_ix == 1);
521 /* wait for all pseudo-forked children to finish */
522 PERL_WAIT_FOR_CHILDREN;
524 destruct_level = PL_perl_destruct_level;
525 #if defined(DEBUGGING) || defined(PERL_TRACK_MEMPOOL)
527 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
529 const int i = atoi(s);
531 if (destruct_level < i) destruct_level = i;
533 #ifdef PERL_TRACK_MEMPOOL
534 /* RT #114496, for perl_free */
535 PL_perl_destruct_level = i;
541 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
547 if (PL_endav && !PL_minus_c) {
548 PERL_SET_PHASE(PERL_PHASE_END);
549 call_list(PL_scopestack_ix, PL_endav);
555 assert(PL_scopestack_ix == 0);
557 /* Need to flush since END blocks can produce output */
560 if (PL_threadhook(aTHX)) {
561 /* Threads hook has vetoed further cleanup */
562 PL_veto_cleanup = TRUE;
566 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
567 if (destruct_level != 0) {
568 /* Fork here to create a child. Our child's job is to preserve the
569 state of scalars prior to destruction, so that we can instruct it
570 to dump any scalars that we later find have leaked.
571 There's no subtlety in this code - it assumes POSIX, and it doesn't
575 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
576 perror("Debug leaking scalars socketpair failed");
582 perror("Debug leaking scalars fork failed");
586 /* We are the child */
587 const int sock = fd[1];
588 const int debug_fd = PerlIO_fileno(Perl_debug_log);
591 /* Our success message is an integer 0, and a char 0 */
592 static const char success[sizeof(int) + 1] = {0};
596 /* We need to close all other file descriptors otherwise we end up
597 with interesting hangs, where the parent closes its end of a
598 pipe, and sits waiting for (another) child to terminate. Only
599 that child never terminates, because it never gets EOF, because
600 we also have the far end of the pipe open. We even need to
601 close the debugging fd, because sometimes it happens to be one
602 end of a pipe, and a process is waiting on the other end for
603 EOF. Normally it would be closed at some point earlier in
604 destruction, but if we happen to cause the pipe to remain open,
605 EOF never occurs, and we get an infinite hang. Hence all the
606 games to pass in a file descriptor if it's actually needed. */
608 f = sysconf(_SC_OPEN_MAX);
610 where = "sysconf failed";
621 union control_un control;
624 struct cmsghdr *cmptr;
628 msg.msg_control = control.control;
629 msg.msg_controllen = sizeof(control.control);
630 /* We're a connected socket so we don't need a source */
634 msg.msg_iovlen = sizeof(vec)/sizeof(vec[0]);
636 vec[0].iov_base = (void*)⌖
637 vec[0].iov_len = sizeof(target);
639 got = recvmsg(sock, &msg, 0);
644 where = "recv failed";
647 if(got < sizeof(target)) {
648 where = "short recv";
652 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
656 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
657 where = "wrong cmsg_len";
660 if(cmptr->cmsg_level != SOL_SOCKET) {
661 where = "wrong cmsg_level";
664 if(cmptr->cmsg_type != SCM_RIGHTS) {
665 where = "wrong cmsg_type";
669 got_fd = *(int*)CMSG_DATA(cmptr);
670 /* For our last little bit of trickery, put the file descriptor
671 back into Perl_debug_log, as if we never actually closed it
673 if(got_fd != debug_fd) {
674 if (dup2(got_fd, debug_fd) == -1) {
681 PerlIO_flush(Perl_debug_log);
683 got = write(sock, &success, sizeof(success));
686 where = "write failed";
689 if(got < sizeof(success)) {
690 where = "short write";
697 int send_errno = errno;
698 unsigned char length = (unsigned char) strlen(where);
699 struct iovec failure[3] = {
700 {(void*)&send_errno, sizeof(send_errno)},
702 {(void*)where, length}
704 int got = writev(sock, failure, 3);
705 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
706 in the parent if we try to read from the socketpair after the
707 child has exited, even if there was data to read.
708 So sleep a bit to give the parent a fighting chance of
711 _exit((got == -1) ? errno : 0);
715 PL_dumper_fd = fd[0];
720 /* We must account for everything. */
722 /* Destroy the main CV and syntax tree */
723 /* Set PL_curcop now, because destroying ops can cause new SVs
724 to be generated in Perl_pad_swipe, and when running with
725 -DDEBUG_LEAKING_SCALARS they expect PL_curcop to point to a valid
726 op from which the filename structure member is copied. */
727 PL_curcop = &PL_compiling;
729 /* ensure comppad/curpad to refer to main's pad */
730 if (CvPADLIST(PL_main_cv)) {
731 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
733 op_free(PL_main_root);
736 PL_main_start = NULL;
737 /* note that PL_main_cv isn't usually actually freed at this point,
738 * due to the CvOUTSIDE refs from subs compiled within it. It will
739 * get freed once all the subs are freed in sv_clean_all(), for
740 * destruct_level > 0 */
741 SvREFCNT_dec(PL_main_cv);
743 PERL_SET_PHASE(PERL_PHASE_DESTRUCT);
745 /* Tell PerlIO we are about to tear things apart in case
746 we have layers which are using resources that should
750 PerlIO_destruct(aTHX);
752 if (PL_sv_objcount) {
754 * Try to destruct global references. We do this first so that the
755 * destructors and destructees still exist. Some sv's might remain.
756 * Non-referenced objects are on their own.
762 /* unhook hooks which will soon be, or use, destroyed data */
763 SvREFCNT_dec(PL_warnhook);
765 SvREFCNT_dec(PL_diehook);
768 /* call exit list functions */
769 while (PL_exitlistlen-- > 0)
770 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
772 Safefree(PL_exitlist);
777 SvREFCNT_dec(PL_registered_mros);
779 /* jettison our possibly duplicated environment */
780 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
781 * so we certainly shouldn't free it here
784 #if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
785 if (environ != PL_origenviron && !PL_use_safe_putenv
787 /* only main thread can free environ[0] contents */
788 && PL_curinterp == aTHX
794 for (i = 0; environ[i]; i++)
795 safesysfree(environ[i]);
797 /* Must use safesysfree() when working with environ. */
798 safesysfree(environ);
800 environ = PL_origenviron;
803 #endif /* !PERL_MICRO */
805 if (destruct_level == 0) {
807 DEBUG_P(debprofdump());
809 #if defined(PERLIO_LAYERS)
810 /* No more IO - including error messages ! */
811 PerlIO_cleanup(aTHX);
814 CopFILE_free(&PL_compiling);
816 /* The exit() function will do everything that needs doing. */
821 /* the syntax tree is shared between clones
822 * so op_free(PL_main_root) only ReREFCNT_dec's
823 * REGEXPs in the parent interpreter
824 * we need to manually ReREFCNT_dec for the clones
827 I32 i = AvFILLp(PL_regex_padav);
828 SV **ary = AvARRAY(PL_regex_padav);
831 SvREFCNT_dec(ary[i]);
832 ary[i] = &PL_sv_undef;
835 Safefree(PL_stashpad);
839 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
840 PL_stashcache = NULL;
842 /* loosen bonds of global variables */
844 /* XXX can PL_parser still be non-null here? */
845 if(PL_parser && PL_parser->rsfp) {
846 (void)PerlIO_close(PL_parser->rsfp);
847 PL_parser->rsfp = NULL;
851 Safefree(PL_splitstr);
861 PL_doswitches = FALSE;
862 PL_dowarn = G_WARN_OFF;
863 PL_sawampersand = 0; /* must save all match strings */
866 Safefree(PL_inplace);
868 SvREFCNT_dec(PL_patchlevel);
869 SvREFCNT_dec(PL_apiversion);
872 SvREFCNT_dec(PL_e_script);
878 /* magical thingies */
880 SvREFCNT_dec(PL_ofsgv); /* *, */
883 SvREFCNT_dec(PL_ors_sv); /* $\ */
886 SvREFCNT_dec(PL_rs); /* $/ */
889 Safefree(PL_osname); /* $^O */
892 SvREFCNT_dec(PL_statname);
896 /* defgv, aka *_ should be taken care of elsewhere */
899 Safefree(PL_efloatbuf);
903 /* startup and shutdown function lists */
904 SvREFCNT_dec(PL_beginav);
905 SvREFCNT_dec(PL_beginav_save);
906 SvREFCNT_dec(PL_endav);
907 SvREFCNT_dec(PL_checkav);
908 SvREFCNT_dec(PL_checkav_save);
909 SvREFCNT_dec(PL_unitcheckav);
910 SvREFCNT_dec(PL_unitcheckav_save);
911 SvREFCNT_dec(PL_initav);
913 PL_beginav_save = NULL;
916 PL_checkav_save = NULL;
917 PL_unitcheckav = NULL;
918 PL_unitcheckav_save = NULL;
921 /* shortcuts just get cleared */
930 PL_last_in_gv = NULL;
942 SvREFCNT_dec(PL_argvout_stack);
943 PL_argvout_stack = NULL;
945 SvREFCNT_dec(PL_modglobal);
947 SvREFCNT_dec(PL_preambleav);
948 PL_preambleav = NULL;
949 SvREFCNT_dec(PL_subname);
951 #ifdef PERL_USES_PL_PIDSTATUS
952 SvREFCNT_dec(PL_pidstatus);
955 SvREFCNT_dec(PL_toptarget);
957 SvREFCNT_dec(PL_bodytarget);
958 PL_bodytarget = NULL;
959 PL_formtarget = NULL;
961 /* free locale stuff */
962 #ifdef USE_LOCALE_COLLATE
963 Safefree(PL_collation_name);
964 PL_collation_name = NULL;
967 #ifdef USE_LOCALE_NUMERIC
968 Safefree(PL_numeric_name);
969 PL_numeric_name = NULL;
970 SvREFCNT_dec(PL_numeric_radix_sv);
971 PL_numeric_radix_sv = NULL;
974 /* clear utf8 character classes */
975 SvREFCNT_dec(PL_utf8_alnum);
976 SvREFCNT_dec(PL_utf8_alpha);
977 SvREFCNT_dec(PL_utf8_blank);
978 SvREFCNT_dec(PL_utf8_space);
979 SvREFCNT_dec(PL_utf8_graph);
980 SvREFCNT_dec(PL_utf8_digit);
981 SvREFCNT_dec(PL_utf8_upper);
982 SvREFCNT_dec(PL_utf8_lower);
983 SvREFCNT_dec(PL_utf8_print);
984 SvREFCNT_dec(PL_utf8_punct);
985 SvREFCNT_dec(PL_utf8_xdigit);
986 SvREFCNT_dec(PL_utf8_mark);
987 SvREFCNT_dec(PL_utf8_toupper);
988 SvREFCNT_dec(PL_utf8_totitle);
989 SvREFCNT_dec(PL_utf8_tolower);
990 SvREFCNT_dec(PL_utf8_tofold);
991 SvREFCNT_dec(PL_utf8_idstart);
992 SvREFCNT_dec(PL_utf8_idcont);
993 SvREFCNT_dec(PL_utf8_foldclosures);
994 PL_utf8_alnum = NULL;
995 PL_utf8_alpha = NULL;
996 PL_utf8_blank = NULL;
997 PL_utf8_space = NULL;
998 PL_utf8_graph = NULL;
999 PL_utf8_digit = NULL;
1000 PL_utf8_upper = NULL;
1001 PL_utf8_lower = NULL;
1002 PL_utf8_print = NULL;
1003 PL_utf8_punct = NULL;
1004 PL_utf8_xdigit = NULL;
1005 PL_utf8_mark = NULL;
1006 PL_utf8_toupper = NULL;
1007 PL_utf8_totitle = NULL;
1008 PL_utf8_tolower = NULL;
1009 PL_utf8_tofold = NULL;
1010 PL_utf8_idstart = NULL;
1011 PL_utf8_idcont = NULL;
1012 PL_utf8_foldclosures = NULL;
1014 if (!specialWARN(PL_compiling.cop_warnings))
1015 PerlMemShared_free(PL_compiling.cop_warnings);
1016 PL_compiling.cop_warnings = NULL;
1017 cophh_free(CopHINTHASH_get(&PL_compiling));
1018 CopHINTHASH_set(&PL_compiling, cophh_new_empty());
1019 CopFILE_free(&PL_compiling);
1021 /* Prepare to destruct main symbol table. */
1024 /* break ref loop *:: <=> %:: */
1025 (void)hv_delete(hv, "main::", 6, G_DISCARD);
1028 SvREFCNT_dec(PL_curstname);
1029 PL_curstname = NULL;
1031 /* clear queued errors */
1032 SvREFCNT_dec(PL_errors);
1035 SvREFCNT_dec(PL_isarev);
1038 if (destruct_level >= 2) {
1039 if (PL_scopestack_ix != 0)
1040 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1041 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1042 (long)PL_scopestack_ix);
1043 if (PL_savestack_ix != 0)
1044 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1045 "Unbalanced saves: %ld more saves than restores\n",
1046 (long)PL_savestack_ix);
1047 if (PL_tmps_floor != -1)
1048 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1049 (long)PL_tmps_floor + 1);
1050 if (cxstack_ix != -1)
1051 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1052 (long)cxstack_ix + 1);
1056 SvREFCNT_dec(PL_regex_padav);
1057 PL_regex_padav = NULL;
1058 PL_regex_pad = NULL;
1061 #ifdef PERL_IMPLICIT_CONTEXT
1062 /* the entries in this list are allocated via SV PVX's, so get freed
1063 * in sv_clean_all */
1064 Safefree(PL_my_cxt_list);
1067 /* Now absolutely destruct everything, somehow or other, loops or no. */
1069 /* the 2 is for PL_fdpid and PL_strtab */
1070 while (sv_clean_all() > 2)
1073 AvREAL_off(PL_fdpid); /* no surviving entries */
1074 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
1077 #ifdef HAVE_INTERP_INTERN
1081 /* Destruct the global string table. */
1083 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1084 * so that sv_free() won't fail on them.
1085 * Now that the global string table is using a single hunk of memory
1086 * for both HE and HEK, we either need to explicitly unshare it the
1087 * correct way, or actually free things here.
1090 const I32 max = HvMAX(PL_strtab);
1091 HE * const * const array = HvARRAY(PL_strtab);
1092 HE *hent = array[0];
1095 if (hent && ckWARN_d(WARN_INTERNAL)) {
1096 HE * const next = HeNEXT(hent);
1097 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
1098 "Unbalanced string table refcount: (%ld) for \"%s\"",
1099 (long)hent->he_valu.hent_refcount, HeKEY(hent));
1106 hent = array[riter];
1111 HvARRAY(PL_strtab) = 0;
1112 HvTOTALKEYS(PL_strtab) = 0;
1114 SvREFCNT_dec(PL_strtab);
1117 /* free the pointer tables used for cloning */
1118 ptr_table_free(PL_ptr_table);
1119 PL_ptr_table = (PTR_TBL_t*)NULL;
1122 /* free special SVs */
1124 SvREFCNT(&PL_sv_yes) = 0;
1125 sv_clear(&PL_sv_yes);
1126 SvANY(&PL_sv_yes) = NULL;
1127 SvFLAGS(&PL_sv_yes) = 0;
1129 SvREFCNT(&PL_sv_no) = 0;
1130 sv_clear(&PL_sv_no);
1131 SvANY(&PL_sv_no) = NULL;
1132 SvFLAGS(&PL_sv_no) = 0;
1136 for (i=0; i<=2; i++) {
1137 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1138 sv_clear(PERL_DEBUG_PAD(i));
1139 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1140 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1144 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
1145 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
1147 #ifdef DEBUG_LEAKING_SCALARS
1148 if (PL_sv_count != 0) {
1153 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
1154 svend = &sva[SvREFCNT(sva)];
1155 for (sv = sva + 1; sv < svend; ++sv) {
1156 if (SvTYPE(sv) != (svtype)SVTYPEMASK) {
1157 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
1159 " refcnt=%"UVuf pTHX__FORMAT "\n"
1160 "\tallocated at %s:%d %s %s (parent 0x%"UVxf");"
1162 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1164 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1166 sv->sv_debug_inpad ? "for" : "by",
1167 sv->sv_debug_optype ?
1168 PL_op_name[sv->sv_debug_optype]: "(none)",
1169 PTR2UV(sv->sv_debug_parent),
1172 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1173 Perl_dump_sv_child(aTHX_ sv);
1179 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1183 /* Wait for up to 4 seconds for child to terminate.
1184 This seems to be the least effort way of timing out on reaping
1186 struct timeval waitfor = {4, 0};
1187 int sock = PL_dumper_fd;
1191 FD_SET(sock, &rset);
1192 select(sock + 1, &rset, NULL, NULL, &waitfor);
1193 waitpid(child, &status, WNOHANG);
1198 #ifdef DEBUG_LEAKING_SCALARS_ABORT
1204 #if defined(PERLIO_LAYERS)
1205 /* No more IO - including error messages ! */
1206 PerlIO_cleanup(aTHX);
1209 /* sv_undef needs to stay immortal until after PerlIO_cleanup
1210 as currently layers use it rather than NULL as a marker
1211 for no arg - and will try and SvREFCNT_dec it.
1213 SvREFCNT(&PL_sv_undef) = 0;
1214 SvREADONLY_off(&PL_sv_undef);
1216 Safefree(PL_origfilename);
1217 PL_origfilename = NULL;
1218 Safefree(PL_reg_curpm);
1219 Safefree(PL_reg_poscache);
1220 free_tied_hv_pool();
1221 Safefree(PL_op_mask);
1222 Safefree(PL_psig_name);
1223 PL_psig_name = (SV**)NULL;
1224 PL_psig_ptr = (SV**)NULL;
1226 /* We need to NULL PL_psig_pend first, so that
1227 signal handlers know not to use it */
1228 int *psig_save = PL_psig_pend;
1229 PL_psig_pend = (int*)NULL;
1230 Safefree(psig_save);
1233 TAINTING_set(FALSE);
1234 TAINT_WARN_set(FALSE);
1235 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
1238 DEBUG_P(debprofdump());
1240 #ifdef USE_REENTRANT_API
1241 Perl_reentrant_free(aTHX);
1246 while (PL_regmatch_slab) {
1247 regmatch_slab *s = PL_regmatch_slab;
1248 PL_regmatch_slab = PL_regmatch_slab->next;
1252 /* As the absolutely last thing, free the non-arena SV for mess() */
1255 /* we know that type == SVt_PVMG */
1257 /* it could have accumulated taint magic */
1260 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1261 moremagic = mg->mg_moremagic;
1262 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1264 Safefree(mg->mg_ptr);
1268 /* we know that type >= SVt_PV */
1269 SvPV_free(PL_mess_sv);
1270 Safefree(SvANY(PL_mess_sv));
1271 Safefree(PL_mess_sv);
1278 =for apidoc perl_free
1280 Releases a Perl interpreter. See L<perlembed>.
1290 PERL_ARGS_ASSERT_PERL_FREE;
1292 if (PL_veto_cleanup)
1295 #ifdef PERL_TRACK_MEMPOOL
1298 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1299 * value as we're probably hunting memory leaks then
1301 if (PL_perl_destruct_level == 0) {
1302 const U32 old_debug = PL_debug;
1303 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1304 thread at thread exit. */
1306 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1307 "free this thread's memory\n");
1308 PL_debug &= ~ DEBUG_m_FLAG;
1310 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
1311 safesysfree(sTHX + (char *)(aTHXx->Imemory_debug_header.next));
1312 PL_debug = old_debug;
1317 #if defined(WIN32) || defined(NETWARE)
1318 # if defined(PERL_IMPLICIT_SYS)
1321 void *host = nw_internal_host;
1323 void *host = w32_internal_host;
1325 PerlMem_free(aTHXx);
1327 nw_delete_internal_host(host);
1329 win32_delete_internal_host(host);
1333 PerlMem_free(aTHXx);
1336 PerlMem_free(aTHXx);
1340 #if defined(USE_ITHREADS)
1341 /* provide destructors to clean up the thread key when libperl is unloaded */
1342 #ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1344 #if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
1345 #pragma fini "perl_fini"
1346 #elif defined(__sun) && !defined(__GNUC__)
1347 #pragma fini (perl_fini)
1351 #if defined(__GNUC__)
1352 __attribute__((destructor))
1357 if (PL_curinterp && !PL_veto_cleanup)
1362 #endif /* THREADS */
1365 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
1368 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1369 PL_exitlist[PL_exitlistlen].fn = fn;
1370 PL_exitlist[PL_exitlistlen].ptr = ptr;
1375 S_set_caret_X(pTHX) {
1377 GV* tmpgv = gv_fetchpvs("\030", GV_ADD|GV_NOTQUAL, SVt_PV); /* $^X */
1379 SV *const caret_x = GvSV(tmpgv);
1381 sv_setpv(caret_x, os2_execname(aTHX));
1383 # ifdef USE_KERN_PROC_PATHNAME
1388 mib[2] = KERN_PROC_PATHNAME;
1391 if (sysctl(mib, 4, NULL, &size, NULL, 0) == 0
1392 && size > 0 && size < MAXPATHLEN * MAXPATHLEN) {
1393 sv_grow(caret_x, size);
1395 if (sysctl(mib, 4, SvPVX(caret_x), &size, NULL, 0) == 0
1397 SvPOK_only(caret_x);
1398 SvCUR_set(caret_x, size - 1);
1403 # elif defined(USE_NSGETEXECUTABLEPATH)
1405 uint32_t size = sizeof(buf);
1407 _NSGetExecutablePath(buf, &size);
1408 if (size < MAXPATHLEN * MAXPATHLEN) {
1409 sv_grow(caret_x, size);
1410 if (_NSGetExecutablePath(SvPVX(caret_x), &size) == 0) {
1411 char *const tidied = realpath(SvPVX(caret_x), NULL);
1413 sv_setpv(caret_x, tidied);
1416 SvPOK_only(caret_x);
1417 SvCUR_set(caret_x, size);
1422 # elif defined(HAS_PROCSELFEXE)
1423 char buf[MAXPATHLEN];
1424 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1426 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1427 includes a spurious NUL which will cause $^X to fail in system
1428 or backticks (this will prevent extensions from being built and
1429 many tests from working). readlink is not meant to add a NUL.
1430 Normal readlink works fine.
1432 if (len > 0 && buf[len-1] == '\0') {
1436 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1437 returning the text "unknown" from the readlink rather than the path
1438 to the executable (or returning an error from the readlink). Any
1439 valid path has a '/' in it somewhere, so use that to validate the
1440 result. See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1442 if (len > 0 && memchr(buf, '/', len)) {
1443 sv_setpvn(caret_x, buf, len);
1447 /* Fallback to this: */
1448 sv_setpv(caret_x, PL_origargv[0]);
1454 =for apidoc perl_parse
1456 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1461 #define SET_CURSTASH(newstash) \
1462 if (PL_curstash != newstash) { \
1463 SvREFCNT_dec(PL_curstash); \
1464 PL_curstash = (HV *)SvREFCNT_inc(newstash); \
1468 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
1475 PERL_ARGS_ASSERT_PERL_PARSE;
1476 #ifndef MULTIPLICITY
1477 PERL_UNUSED_ARG(my_perl);
1480 #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
1481 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
1482 * This MUST be done before any hash stores or fetches take place.
1483 * If you set PL_rehash_seed (and presumably also PL_rehash_seed_set)
1484 * yourself, it is your responsibility to provide a good random seed!
1485 * You can also define PERL_HASH_SEED in compile time, see hv.h. */
1486 if (!PL_rehash_seed_set)
1487 PL_rehash_seed = get_hash_seed();
1489 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
1491 if (s && (atoi(s) == 1))
1492 PerlIO_printf(Perl_debug_log, "HASH_SEED = %"UVuf"\n", PL_rehash_seed);
1494 #endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1499 if (PL_origalen != 0) {
1500 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1503 /* Set PL_origalen be the sum of the contiguous argv[]
1504 * elements plus the size of the env in case that it is
1505 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
1506 * as the maximum modifiable length of $0. In the worst case
1507 * the area we are able to modify is limited to the size of
1508 * the original argv[0]. (See below for 'contiguous', though.)
1510 const char *s = NULL;
1513 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
1514 /* Do the mask check only if the args seem like aligned. */
1516 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1518 /* See if all the arguments are contiguous in memory. Note
1519 * that 'contiguous' is a loose term because some platforms
1520 * align the argv[] and the envp[]. If the arguments look
1521 * like non-aligned, assume that they are 'strictly' or
1522 * 'traditionally' contiguous. If the arguments look like
1523 * aligned, we just check that they are within aligned
1524 * PTRSIZE bytes. As long as no system has something bizarre
1525 * like the argv[] interleaved with some other data, we are
1526 * fine. (Did I just evoke Murphy's Law?) --jhi */
1527 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1529 for (i = 1; i < PL_origargc; i++) {
1530 if ((PL_origargv[i] == s + 1
1532 || PL_origargv[i] == s + 2
1537 (PL_origargv[i] > s &&
1539 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1550 #ifndef PERL_USE_SAFE_PUTENV
1551 /* Can we grab env area too to be used as the area for $0? */
1552 if (s && PL_origenviron && !PL_use_safe_putenv) {
1553 if ((PL_origenviron[0] == s + 1)
1556 (PL_origenviron[0] > s &&
1557 PL_origenviron[0] <=
1558 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1561 #ifndef OS2 /* ENVIRON is read by the kernel too. */
1562 s = PL_origenviron[0];
1565 my_setenv("NoNe SuCh", NULL);
1566 /* Force copy of environment. */
1567 for (i = 1; PL_origenviron[i]; i++) {
1568 if (PL_origenviron[i] == s + 1
1571 (PL_origenviron[i] > s &&
1572 PL_origenviron[i] <=
1573 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1576 s = PL_origenviron[i];
1584 #endif /* !defined(PERL_USE_SAFE_PUTENV) */
1586 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
1591 /* Come here if running an undumped a.out. */
1593 PL_origfilename = savepv(argv[0]);
1594 PL_do_undump = FALSE;
1595 cxstack_ix = -1; /* start label stack again */
1597 assert (!TAINT_get);
1599 S_set_caret_X(aTHX);
1601 init_postdump_symbols(argc,argv,env);
1606 op_free(PL_main_root);
1607 PL_main_root = NULL;
1609 PL_main_start = NULL;
1610 SvREFCNT_dec(PL_main_cv);
1614 oldscope = PL_scopestack_ix;
1615 PL_dowarn = G_WARN_OFF;
1620 parse_body(env,xsinit);
1621 if (PL_unitcheckav) {
1622 call_list(oldscope, PL_unitcheckav);
1625 PERL_SET_PHASE(PERL_PHASE_CHECK);
1626 call_list(oldscope, PL_checkav);
1634 /* my_exit() was called */
1635 while (PL_scopestack_ix > oldscope)
1638 SET_CURSTASH(PL_defstash);
1639 if (PL_unitcheckav) {
1640 call_list(oldscope, PL_unitcheckav);
1643 PERL_SET_PHASE(PERL_PHASE_CHECK);
1644 call_list(oldscope, PL_checkav);
1649 PerlIO_printf(Perl_error_log, "panic: top_env\n");
1657 /* This needs to stay in perl.c, as perl.c is compiled with different flags for
1658 miniperl, and we need to see those flags reflected in the values here. */
1660 /* What this returns is subject to change. Use the public interface in Config.
1663 S_Internals_V(pTHX_ CV *cv)
1666 #ifdef LOCAL_PATCH_COUNT
1667 const int local_patch_count = LOCAL_PATCH_COUNT;
1669 const int local_patch_count = 0;
1671 const int entries = 3 + local_patch_count;
1673 static const char non_bincompat_options[] =
1680 # ifdef PERL_DISABLE_PMC
1683 # ifdef PERL_DONT_CREATE_GVSV
1684 " PERL_DONT_CREATE_GVSV"
1686 # ifdef PERL_EXTERNAL_GLOB
1687 " PERL_EXTERNAL_GLOB"
1689 # ifdef PERL_IS_MINIPERL
1692 # ifdef PERL_MALLOC_WRAP
1695 # ifdef PERL_MEM_LOG
1698 # ifdef PERL_MEM_LOG_NOIMPL
1699 " PERL_MEM_LOG_NOIMPL"
1701 # ifdef PERL_PRESERVE_IVUV
1702 " PERL_PRESERVE_IVUV"
1704 # ifdef PERL_RELOCATABLE_INCPUSH
1705 " PERL_RELOCATABLE_INCPUSH"
1707 # ifdef PERL_USE_DEVEL
1710 # ifdef PERL_USE_SAFE_PUTENV
1711 " PERL_USE_SAFE_PUTENV"
1713 # ifdef UNLINK_ALL_VERSIONS
1714 " UNLINK_ALL_VERSIONS"
1716 # ifdef USE_ATTRIBUTES_FOR_PERLIO
1717 " USE_ATTRIBUTES_FOR_PERLIO"
1719 # ifdef USE_FAST_STDIO
1725 # ifdef USE_LOCALE_CTYPE
1728 # ifdef USE_PERL_ATOF
1731 # ifdef USE_SITECUSTOMIZE
1732 " USE_SITECUSTOMIZE"
1735 PERL_UNUSED_ARG(cv);
1736 PERL_UNUSED_ARG(items);
1738 EXTEND(SP, entries);
1740 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1741 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1742 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1746 PUSHs(Perl_newSVpvn_flags(aTHX_
1747 STR_WITH_LEN("Compiled at " __DATE__ " " __TIME__),
1750 PUSHs(Perl_newSVpvn_flags(aTHX_ STR_WITH_LEN("Compiled on " __DATE__),
1754 PUSHs(&PL_sv_undef);
1757 for (i = 1; i <= local_patch_count; i++) {
1758 /* This will be an undef, if PL_localpatches[i] is NULL. */
1759 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1765 #define INCPUSH_UNSHIFT 0x01
1766 #define INCPUSH_ADD_OLD_VERS 0x02
1767 #define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1768 #define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1769 #define INCPUSH_NOT_BASEDIR 0x10
1770 #define INCPUSH_CAN_RELOCATE 0x20
1771 #define INCPUSH_ADD_SUB_DIRS \
1772 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
1775 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
1779 int argc = PL_origargc;
1780 char **argv = PL_origargv;
1781 const char *scriptname = NULL;
1782 VOL bool dosearch = FALSE;
1784 bool doextract = FALSE;
1785 const char *cddir = NULL;
1786 #ifdef USE_SITECUSTOMIZE
1787 bool minus_f = FALSE;
1789 SV *linestr_sv = NULL;
1790 bool add_read_e_script = FALSE;
1791 U32 lex_start_flags = 0;
1793 PERL_SET_PHASE(PERL_PHASE_START);
1799 for (argc--,argv++; argc > 0; argc--,argv++) {
1800 if (argv[0][0] != '-' || !argv[0][1])
1806 #ifndef PERL_STRICT_CR
1830 if ((s = moreswitches(s)))
1835 #if SILENT_NO_TAINT_SUPPORT
1836 /* silently ignore */
1837 #elif NO_TAINT_SUPPORT
1838 Perl_croak("This perl was compiled without taint support. "
1839 "Cowardly refusing to run with -t or -T flags");
1841 CHECK_MALLOC_TOO_LATE_FOR('t');
1842 if( !TAINTING_get ) {
1843 TAINT_WARN_set(TRUE);
1850 #if SILENT_NO_TAINT_SUPPORT
1851 /* silently ignore */
1852 #elif NO_TAINT_SUPPORT
1853 Perl_croak("This perl was compiled without taint support. "
1854 "Cowardly refusing to run with -t or -T flags");
1856 CHECK_MALLOC_TOO_LATE_FOR('T');
1858 TAINT_WARN_set(FALSE);
1867 forbid_setid('e', FALSE);
1869 PL_e_script = newSVpvs("");
1870 add_read_e_script = TRUE;
1873 sv_catpv(PL_e_script, s);
1875 sv_catpv(PL_e_script, argv[1]);
1879 Perl_croak(aTHX_ "No code specified for -%c", c);
1880 sv_catpvs(PL_e_script, "\n");
1884 #ifdef USE_SITECUSTOMIZE
1890 case 'I': /* -I handled both here and in moreswitches() */
1891 forbid_setid('I', FALSE);
1892 if (!*++s && (s=argv[1]) != NULL) {
1896 STRLEN len = strlen(s);
1897 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
1900 Perl_croak(aTHX_ "No directory specified for -I");
1903 forbid_setid('S', FALSE);
1912 opts_prog = newSVpvs("use Config; Config::_V()");
1916 opts_prog = Perl_newSVpvf(aTHX_
1917 "use Config; Config::config_vars(qw%c%s%c)",
1921 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
1922 /* don't look for script or read stdin */
1923 scriptname = BIT_BUCKET;
1935 if (!*++s || isSPACE(*s)) {
1939 /* catch use of gnu style long options.
1940 Both of these exit immediately. */
1941 if (strEQ(s, "version"))
1943 if (strEQ(s, "help"))
1948 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1959 #ifndef SECURE_INTERNAL_GETENV
1962 (s = PerlEnv_getenv("PERL5OPT")))
1966 if (*s == '-' && *(s+1) == 'T') {
1967 #if SILENT_NO_TAINT_SUPPORT
1968 /* silently ignore */
1969 #elif NO_TAINT_SUPPORT
1970 Perl_croak("This perl was compiled without taint support. "
1971 "Cowardly refusing to run with -t or -T flags");
1973 CHECK_MALLOC_TOO_LATE_FOR('T');
1975 TAINT_WARN_set(FALSE);
1979 char *popt_copy = NULL;
1992 if (!strchr("CDIMUdmtwW", *s))
1993 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
1997 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
1998 s = popt_copy + (s - d);
2006 #if SILENT_NO_TAINT_SUPPORT
2007 /* silently ignore */
2008 #elif NO_TAINT_SUPPORT
2009 Perl_croak("This perl was compiled without taint support. "
2010 "Cowardly refusing to run with -t or -T flags");
2012 if( !TAINTING_get) {
2013 TAINT_WARN_set(TRUE);
2025 /* Set $^X early so that it can be used for relocatable paths in @INC */
2026 /* and for SITELIB_EXP in USE_SITECUSTOMIZE */
2027 assert (!TAINT_get);
2029 S_set_caret_X(aTHX);
2032 #if defined(USE_SITECUSTOMIZE)
2034 /* The games with local $! are to avoid setting errno if there is no
2035 sitecustomize script. "q%c...%c", 0, ..., 0 becomes "q\0...\0",
2036 ie a q() operator with a NUL byte as a the delimiter. This avoids
2037 problems with pathnames containing (say) ' */
2038 # ifdef PERL_IS_MINIPERL
2039 AV *const inc = GvAV(PL_incgv);
2040 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
2043 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2045 "BEGIN { do {local $!; -f q%c%"SVf"/buildcustomize.pl%c} && do q%c%"SVf"/buildcustomize.pl%c }",
2050 /* SITELIB_EXP is a function call on Win32. */
2051 const char *const raw_sitelib = SITELIB_EXP;
2053 /* process .../.. if PERL_RELOCATABLE_INC is defined */
2054 SV *sitelib_sv = mayberelocate(raw_sitelib, strlen(raw_sitelib),
2055 INCPUSH_CAN_RELOCATE);
2056 const char *const sitelib = SvPVX(sitelib_sv);
2057 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2059 "BEGIN { do {local $!; -f q%c%s/sitecustomize.pl%c} && do q%c%s/sitecustomize.pl%c }",
2062 assert (SvREFCNT(sitelib_sv) == 1);
2063 SvREFCNT_dec(sitelib_sv);
2070 scriptname = argv[0];
2073 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2075 else if (scriptname == NULL) {
2077 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
2083 assert (!TAINT_get);
2087 bool suidscript = FALSE;
2089 rsfp = open_script(scriptname, dosearch, &suidscript);
2091 rsfp = PerlIO_stdin();
2092 lex_start_flags = LEX_DONT_CLOSE_RSFP;
2095 validate_suid(rsfp);
2098 # if defined(SIGCHLD) || defined(SIGCLD)
2101 # define SIGCHLD SIGCLD
2103 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2104 if (sigstate == (Sighandler_t) SIG_IGN) {
2105 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2106 "Can't ignore signal CHLD, forcing to default");
2107 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2115 /* This will croak if suidscript is true, as -x cannot be used with
2117 forbid_setid('x', suidscript);
2118 /* Hence you can't get here if suidscript is true */
2120 linestr_sv = newSV_type(SVt_PV);
2121 lex_start_flags |= LEX_START_COPIED;
2122 find_beginning(linestr_sv, rsfp);
2123 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2124 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2128 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
2129 CvUNIQUE_on(PL_compcv);
2131 CvPADLIST(PL_compcv) = pad_new(0);
2133 PL_isarev = newHV();
2136 boot_core_UNIVERSAL();
2138 newXS("Internals::V", S_Internals_V, __FILE__);
2141 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
2143 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC) || defined(SYMBIAN)
2149 # ifdef HAS_SOCKS5_INIT
2150 socks5_init(argv[0]);
2156 init_predump_symbols();
2157 /* init_postdump_symbols not currently designed to be called */
2158 /* more than once (ENV isn't cleared first, for example) */
2159 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
2161 init_postdump_symbols(argc,argv,env);
2163 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2164 * or explicitly in some platforms.
2165 * locale.c:Perl_init_i18nl10n() if the environment
2166 * look like the user wants to use UTF-8. */
2167 #if defined(__SYMBIAN32__)
2168 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2170 # ifndef PERL_IS_MINIPERL
2172 /* Requires init_predump_symbols(). */
2173 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
2178 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
2179 * and the default open disciplines. */
2180 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2181 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2183 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2184 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2185 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2187 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2188 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2189 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2191 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2192 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
2193 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2195 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2196 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2199 sv_setpvs(sv, ":utf8\0:utf8");
2201 sv_setpvs(sv, ":utf8\0");
2204 sv_setpvs(sv, "\0:utf8");
2213 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2214 if (strEQ(s, "unsafe"))
2215 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2216 else if (strEQ(s, "safe"))
2217 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2219 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2226 if (!TAINTING_get &&
2227 (s = PerlEnv_getenv("PERL_XMLDUMP"))) {
2231 PL_xmlfp = PerlIO_stdout();
2233 PL_xmlfp = PerlIO_open(s, "w");
2235 Perl_croak(aTHX_ "Can't open %s", s);
2237 my_setenv("PERL_XMLDUMP", NULL); /* hide from subprocs */
2243 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2244 PL_madskills = atoi(s);
2245 my_setenv("PERL_MADSKILLS", NULL); /* hide from subprocs */
2250 lex_start(linestr_sv, rsfp, lex_start_flags);
2252 SvREFCNT_dec(linestr_sv);
2254 PL_subname = newSVpvs("main");
2256 if (add_read_e_script)
2257 filter_add(read_e_script, NULL);
2259 /* now parse the script */
2261 SETERRNO(0,SS_NORMAL);
2262 if (yyparse(GRAMPROG) || PL_parser->error_count) {
2264 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
2266 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
2270 CopLINE_set(PL_curcop, 0);
2271 SET_CURSTASH(PL_defstash);
2273 SvREFCNT_dec(PL_e_script);
2281 SAVECOPFILE(PL_curcop);
2282 SAVECOPLINE(PL_curcop);
2283 gv_check(PL_defstash);
2292 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2293 dump_mstats("after compilation:");
2298 PL_restartjmpenv = NULL;
2304 =for apidoc perl_run
2306 Tells a Perl interpreter to run. See L<perlembed>.
2319 PERL_ARGS_ASSERT_PERL_RUN;
2320 #ifndef MULTIPLICITY
2321 PERL_UNUSED_ARG(my_perl);
2324 oldscope = PL_scopestack_ix;
2332 cxstack_ix = -1; /* start context stack again */
2334 case 0: /* normal completion */
2338 case 2: /* my_exit() */
2339 while (PL_scopestack_ix > oldscope)
2342 SET_CURSTASH(PL_defstash);
2343 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
2344 PL_endav && !PL_minus_c) {
2345 PERL_SET_PHASE(PERL_PHASE_END);
2346 call_list(oldscope, PL_endav);
2349 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2350 dump_mstats("after execution: ");
2356 POPSTACK_TO(PL_mainstack);
2359 PerlIO_printf(Perl_error_log, "panic: restartop in perl_run\n");
2370 S_run_body(pTHX_ I32 oldscope)
2373 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support (0x%x).\n",
2374 PL_sawampersand ? "Enabling" : "Omitting",
2375 (unsigned int)(PL_sawampersand)));
2377 if (!PL_restartop) {
2381 exit(0); /* less likely to core dump than my_exit(0) */
2385 if (DEBUG_x_TEST || DEBUG_B_TEST)
2386 dump_all_perl(!DEBUG_B_TEST);
2388 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
2392 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
2395 if (PERLDB_SINGLE && PL_DBsingle)
2396 sv_setiv(PL_DBsingle, 1);
2398 PERL_SET_PHASE(PERL_PHASE_INIT);
2399 call_list(oldscope, PL_initav);
2401 #ifdef PERL_DEBUG_READONLY_OPS
2402 if (PL_main_root && PL_main_root->op_slabbed)
2403 Slab_to_ro(OpSLAB(PL_main_root));
2409 PERL_SET_PHASE(PERL_PHASE_RUN);
2412 PL_restartjmpenv = NULL;
2413 PL_op = PL_restartop;
2417 else if (PL_main_start) {
2418 CvDEPTH(PL_main_cv) = 1;
2419 PL_op = PL_main_start;
2423 assert(0); /* NOTREACHED */
2427 =head1 SV Manipulation Functions
2429 =for apidoc p||get_sv
2431 Returns the SV of the specified Perl scalar. C<flags> are passed to
2432 C<gv_fetchpv>. If C<GV_ADD> is set and the
2433 Perl variable does not exist then it will be created. If C<flags> is zero
2434 and the variable does not exist then NULL is returned.
2440 Perl_get_sv(pTHX_ const char *name, I32 flags)
2444 PERL_ARGS_ASSERT_GET_SV;
2446 gv = gv_fetchpv(name, flags, SVt_PV);
2453 =head1 Array Manipulation Functions
2455 =for apidoc p||get_av
2457 Returns the AV of the specified Perl global or package array with the given
2458 name (so it won't work on lexical variables). C<flags> are passed
2459 to C<gv_fetchpv>. If C<GV_ADD> is set and the
2460 Perl variable does not exist then it will be created. If C<flags> is zero
2461 and the variable does not exist then NULL is returned.
2463 Perl equivalent: C<@{"$name"}>.
2469 Perl_get_av(pTHX_ const char *name, I32 flags)
2471 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
2473 PERL_ARGS_ASSERT_GET_AV;
2483 =head1 Hash Manipulation Functions
2485 =for apidoc p||get_hv
2487 Returns the HV of the specified Perl hash. C<flags> are passed to
2488 C<gv_fetchpv>. If C<GV_ADD> is set and the
2489 Perl variable does not exist then it will be created. If C<flags> is zero
2490 and the variable does not exist then NULL is returned.
2496 Perl_get_hv(pTHX_ const char *name, I32 flags)
2498 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
2500 PERL_ARGS_ASSERT_GET_HV;
2510 =head1 CV Manipulation Functions
2512 =for apidoc p||get_cvn_flags
2514 Returns the CV of the specified Perl subroutine. C<flags> are passed to
2515 C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2516 exist then it will be declared (which has the same effect as saying
2517 C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2518 then NULL is returned.
2520 =for apidoc p||get_cv
2522 Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
2528 Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
2530 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
2532 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2534 /* XXX this is probably not what they think they're getting.
2535 * It has the same effect as "sub name;", i.e. just a forward
2537 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
2538 return newSTUB(gv,0);
2545 /* Nothing in core calls this now, but we can't replace it with a macro and
2546 move it to mathoms.c as a macro would evaluate name twice. */
2548 Perl_get_cv(pTHX_ const char *name, I32 flags)
2550 PERL_ARGS_ASSERT_GET_CV;
2552 return get_cvn_flags(name, strlen(name), flags);
2555 /* Be sure to refetch the stack pointer after calling these routines. */
2559 =head1 Callback Functions
2561 =for apidoc p||call_argv
2563 Performs a callback to the specified named and package-scoped Perl subroutine
2564 with C<argv> (a NULL-terminated array of strings) as arguments. See L<perlcall>.
2566 Approximate Perl equivalent: C<&{"$sub_name"}(@$argv)>.
2572 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
2574 /* See G_* flags in cop.h */
2575 /* null terminated arg list */
2580 PERL_ARGS_ASSERT_CALL_ARGV;
2585 mXPUSHs(newSVpv(*argv,0));
2590 return call_pv(sub_name, flags);
2594 =for apidoc p||call_pv
2596 Performs a callback to the specified Perl sub. See L<perlcall>.
2602 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
2603 /* name of the subroutine */
2604 /* See G_* flags in cop.h */
2606 PERL_ARGS_ASSERT_CALL_PV;
2608 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
2612 =for apidoc p||call_method
2614 Performs a callback to the specified Perl method. The blessed object must
2615 be on the stack. See L<perlcall>.
2621 Perl_call_method(pTHX_ const char *methname, I32 flags)
2622 /* name of the subroutine */
2623 /* See G_* flags in cop.h */
2626 PERL_ARGS_ASSERT_CALL_METHOD;
2628 len = strlen(methname);
2630 /* XXX: sv_2mortal(newSVpvn_share(methname, len)) can be faster */
2631 return call_sv(newSVpvn_flags(methname, len, SVs_TEMP), flags | G_METHOD);
2634 /* May be called with any of a CV, a GV, or an SV containing the name. */
2636 =for apidoc p||call_sv
2638 Performs a callback to the Perl sub whose name is in the SV. See
2645 Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
2646 /* See G_* flags in cop.h */
2649 LOGOP myop; /* fake syntax tree node */
2654 bool oldcatch = CATCH_GET;
2656 OP* const oldop = PL_op;
2659 PERL_ARGS_ASSERT_CALL_SV;
2661 if (flags & G_DISCARD) {
2665 if (!(flags & G_WANT)) {
2666 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2671 Zero(&myop, 1, LOGOP);
2672 if (!(flags & G_NOARGS))
2673 myop.op_flags |= OPf_STACKED;
2674 myop.op_flags |= OP_GIMME_REVERSE(flags);
2678 EXTEND(PL_stack_sp, 1);
2679 *++PL_stack_sp = sv;
2681 oldscope = PL_scopestack_ix;
2683 if (PERLDB_SUB && PL_curstash != PL_debstash
2684 /* Handle first BEGIN of -d. */
2685 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
2686 /* Try harder, since this may have been a sighandler, thus
2687 * curstash may be meaningless. */
2688 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
2689 && !(flags & G_NODEBUG))
2690 myop.op_private |= OPpENTERSUB_DB;
2692 if (flags & G_METHOD) {
2693 Zero(&method_op, 1, UNOP);
2694 method_op.op_next = (OP*)&myop;
2695 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2696 method_op.op_type = OP_METHOD;
2697 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
2698 myop.op_type = OP_ENTERSUB;
2699 PL_op = (OP*)&method_op;
2702 if (!(flags & G_EVAL)) {
2704 CALL_BODY_SUB((OP*)&myop);
2705 retval = PL_stack_sp - (PL_stack_base + oldmark);
2706 CATCH_SET(oldcatch);
2709 myop.op_other = (OP*)&myop;
2711 create_eval_scope(flags|G_FAKINGEVAL);
2719 CALL_BODY_SUB((OP*)&myop);
2720 retval = PL_stack_sp - (PL_stack_base + oldmark);
2721 if (!(flags & G_KEEPERR)) {
2729 /* my_exit() was called */
2730 SET_CURSTASH(PL_defstash);
2734 assert(0); /* NOTREACHED */
2737 PL_restartjmpenv = NULL;
2738 PL_op = PL_restartop;
2742 PL_stack_sp = PL_stack_base + oldmark;
2743 if ((flags & G_WANT) == G_ARRAY)
2747 *++PL_stack_sp = &PL_sv_undef;
2752 if (PL_scopestack_ix > oldscope)
2753 delete_eval_scope();
2757 if (flags & G_DISCARD) {
2758 PL_stack_sp = PL_stack_base + oldmark;
2767 /* Eval a string. The G_EVAL flag is always assumed. */
2770 =for apidoc p||eval_sv
2772 Tells Perl to C<eval> the string in the SV. It supports the same flags
2773 as C<call_sv>, with the obvious exception of G_EVAL. See L<perlcall>.
2779 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
2781 /* See G_* flags in cop.h */
2785 UNOP myop; /* fake syntax tree node */
2786 VOL I32 oldmark = SP - PL_stack_base;
2789 OP* const oldop = PL_op;
2792 PERL_ARGS_ASSERT_EVAL_SV;
2794 if (flags & G_DISCARD) {
2801 Zero(&myop, 1, UNOP);
2802 EXTEND(PL_stack_sp, 1);
2803 *++PL_stack_sp = sv;
2805 if (!(flags & G_NOARGS))
2806 myop.op_flags = OPf_STACKED;
2807 myop.op_type = OP_ENTEREVAL;
2808 myop.op_flags |= OP_GIMME_REVERSE(flags);
2809 if (flags & G_KEEPERR)
2810 myop.op_flags |= OPf_SPECIAL;
2811 if (PL_reg_state.re_reparsing)
2812 myop.op_private = OPpEVAL_COPHH;
2814 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2815 * before a PUSHEVAL, which corrupts the stack after a croak */
2816 TAINT_PROPER("eval_sv()");
2822 if (PL_op == (OP*)(&myop)) {
2823 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2825 goto fail; /* failed in compilation */
2828 retval = PL_stack_sp - (PL_stack_base + oldmark);
2829 if (!(flags & G_KEEPERR)) {
2837 /* my_exit() was called */
2838 SET_CURSTASH(PL_defstash);
2842 assert(0); /* NOTREACHED */
2845 PL_restartjmpenv = NULL;
2846 PL_op = PL_restartop;
2851 PL_stack_sp = PL_stack_base + oldmark;
2852 if ((flags & G_WANT) == G_ARRAY)
2856 *++PL_stack_sp = &PL_sv_undef;
2862 if (flags & G_DISCARD) {
2863 PL_stack_sp = PL_stack_base + oldmark;
2873 =for apidoc p||eval_pv
2875 Tells Perl to C<eval> the given string and return an SV* result.
2881 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
2885 SV* sv = newSVpv(p, 0);
2887 PERL_ARGS_ASSERT_EVAL_PV;
2889 eval_sv(sv, G_SCALAR);
2896 if (croak_on_error && SvTRUE(ERRSV)) {
2897 Perl_croak(aTHX_ "%s", SvPVx_nolen_const(ERRSV));
2903 /* Require a module. */
2906 =head1 Embedding Functions
2908 =for apidoc p||require_pv
2910 Tells Perl to C<require> the file named by the string argument. It is
2911 analogous to the Perl code C<eval "require '$file'">. It's even
2912 implemented that way; consider using load_module instead.
2917 Perl_require_pv(pTHX_ const char *pv)
2923 PERL_ARGS_ASSERT_REQUIRE_PV;
2925 PUSHSTACKi(PERLSI_REQUIRE);
2927 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2928 eval_sv(sv_2mortal(sv), G_DISCARD);
2934 S_usage(pTHX) /* XXX move this out into a module ? */
2936 /* This message really ought to be max 23 lines.
2937 * Removed -h because the user already knows that option. Others? */
2939 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
2940 minimum of 509 character string literals. */
2941 static const char * const usage_msg[] = {
2942 " -0[octal] specify record separator (\\0, if no argument)\n"
2943 " -a autosplit mode with -n or -p (splits $_ into @F)\n"
2944 " -C[number/list] enables the listed Unicode features\n"
2945 " -c check syntax only (runs BEGIN and CHECK blocks)\n"
2946 " -d[:debugger] run program under debugger\n"
2947 " -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
2948 " -e program one line of program (several -e's allowed, omit programfile)\n"
2949 " -E program like -e, but enables all optional features\n"
2950 " -f don't do $sitelib/sitecustomize.pl at startup\n"
2951 " -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
2952 " -i[extension] edit <> files in place (makes backup if extension supplied)\n"
2953 " -Idirectory specify @INC/#include directory (several -I's allowed)\n",
2954 " -l[octal] enable line ending processing, specifies line terminator\n"
2955 " -[mM][-]module execute \"use/no module...\" before executing program\n"
2956 " -n assume \"while (<>) { ... }\" loop around program\n"
2957 " -p assume loop like -n but print line also, like sed\n"
2958 " -s enable rudimentary parsing for switches after programfile\n"
2959 " -S look for programfile using PATH environment variable\n",
2960 " -t enable tainting warnings\n"
2961 " -T enable tainting checks\n"
2962 " -u dump core after parsing program\n"
2963 " -U allow unsafe operations\n"
2964 " -v print version, patchlevel and license\n"
2965 " -V[:variable] print configuration summary (or a single Config.pm variable)\n",
2966 " -w enable many useful warnings\n"
2967 " -W enable all warnings\n"
2968 " -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
2969 " -X disable all warnings\n"
2971 "Run 'perldoc perl' for more help with Perl.\n\n",
2974 const char * const *p = usage_msg;
2975 PerlIO *out = PerlIO_stdout();
2978 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
2981 PerlIO_puts(out, *p++);
2985 /* convert a string of -D options (or digits) into an int.
2986 * sets *s to point to the char after the options */
2990 Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
2992 static const char * const usage_msgd[] = {
2993 " Debugging flag values: (see also -d)\n"
2994 " p Tokenizing and parsing (with v, displays parse stack)\n"
2995 " s Stack snapshots (with v, displays all stacks)\n"
2996 " l Context (loop) stack processing\n"
2997 " t Trace execution\n"
2998 " o Method and overloading resolution\n",
2999 " c String/numeric conversions\n"
3000 " P Print profiling info, source file input state\n"
3001 " m Memory and SV allocation\n"
3002 " f Format processing\n"
3003 " r Regular expression parsing and execution\n"
3004 " x Syntax tree dump\n",
3005 " u Tainting checks\n"
3006 " H Hash dump -- usurps values()\n"
3007 " X Scratchpad allocation\n"
3009 " S Op slab allocation\n"
3011 " R Include reference counts of dumped variables (eg when using -Ds)\n",
3012 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
3013 " v Verbose: use in conjunction with other flags\n"
3014 " C Copy On Write\n"
3015 " A Consistency checks on internal structures\n"
3016 " q quiet - currently only suppresses the 'EXECUTING' message\n"
3017 " M trace smart match resolution\n"
3018 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
3023 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
3026 /* if adding extra options, remember to update DEBUG_MASK */
3027 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMB";
3029 for (; isALNUM(**s); (*s)++) {
3030 const char * const d = strchr(debopts,**s);
3032 i |= 1 << (d - debopts);
3033 else if (ckWARN_d(WARN_DEBUGGING))
3034 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3035 "invalid option -D%c, use -D'' to see choices\n", **s);
3038 else if (isDIGIT(**s)) {
3040 for (; isALNUM(**s); (*s)++) ;
3042 else if (givehelp) {
3043 const char *const *p = usage_msgd;
3044 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
3047 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
3048 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3049 "-Dp not implemented on this platform\n");
3055 /* This routine handles any switches that can be given during run */
3058 Perl_moreswitches(pTHX_ const char *s)
3062 const char option = *s; /* used to remember option in -m/-M code */
3064 PERL_ARGS_ASSERT_MORESWITCHES;
3072 SvREFCNT_dec(PL_rs);
3073 if (s[1] == 'x' && s[2]) {
3074 const char *e = s+=2;
3080 flags = PERL_SCAN_SILENT_ILLDIGIT;
3081 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3082 if (s + numlen < e) {
3083 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3087 PL_rs = newSVpvs("");
3088 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
3089 tmps = (U8*)SvPVX(PL_rs);
3090 uvchr_to_utf8(tmps, rschar);
3091 SvCUR_set(PL_rs, UNISKIP(rschar));
3096 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3097 if (rschar & ~((U8)~0))
3098 PL_rs = &PL_sv_undef;
3099 else if (!rschar && numlen >= 2)
3100 PL_rs = newSVpvs("");
3102 char ch = (char)rschar;
3103 PL_rs = newSVpvn(&ch, 1);
3106 sv_setsv(get_sv("/", GV_ADD), PL_rs);
3111 PL_unicode = parse_unicode_opts( (const char **)&s );
3112 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3118 while (*s && !isSPACE(*s)) ++s;
3119 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
3130 forbid_setid('d', FALSE);
3133 /* -dt indicates to the debugger that threads will be used */
3134 if (*s == 't' && !isALNUM(s[1])) {
3136 my_setenv("PERL5DB_THREADED", "1");
3139 /* The following permits -d:Mod to accepts arguments following an =
3140 in the fashion that -MSome::Mod does. */
3141 if (*s == ':' || *s == '=') {
3148 sv = newSVpvs("no Devel::");
3150 sv = newSVpvs("use Devel::");
3154 end = s + strlen(s);
3156 /* We now allow -d:Module=Foo,Bar and -d:-Module */
3157 while(isALNUM(*s) || *s==':') ++s;
3159 sv_catpvn(sv, start, end - start);
3161 sv_catpvn(sv, start, s-start);
3162 /* Don't use NUL as q// delimiter here, this string goes in the
3164 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
3167 my_setenv("PERL5DB", SvPV_nolen_const(sv));
3171 PL_perldb = PERLDB_ALL;
3178 forbid_setid('D', FALSE);
3180 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
3181 #else /* !DEBUGGING */
3182 if (ckWARN_d(WARN_DEBUGGING))
3183 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3184 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
3185 for (s++; isALNUM(*s); s++) ;
3192 Safefree(PL_inplace);
3193 #if defined(__CYGWIN__) /* do backup extension automagically */
3194 if (*(s+1) == '\0') {
3195 PL_inplace = savepvs(".bak");
3198 #endif /* __CYGWIN__ */
3200 const char * const start = ++s;
3201 while (*s && !isSPACE(*s))
3204 PL_inplace = savepvn(start, s - start);
3208 if (*s == '-') /* Additional switches on #! line. */
3212 case 'I': /* -I handled both here and in parse_body() */
3213 forbid_setid('I', FALSE);
3215 while (*s && isSPACE(*s))
3220 /* ignore trailing spaces (possibly followed by other switches) */
3222 for (e = p; *e && !isSPACE(*e); e++) ;
3226 } while (*p && *p != '-');
3228 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
3234 Perl_croak(aTHX_ "No directory specified for -I");
3240 SvREFCNT_dec(PL_ors_sv);
3246 PL_ors_sv = newSVpvs("\n");
3247 numlen = 3 + (*s == '0');
3248 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
3252 if (RsPARA(PL_rs)) {
3253 PL_ors_sv = newSVpvs("\n\n");
3256 PL_ors_sv = newSVsv(PL_rs);
3261 forbid_setid('M', FALSE); /* XXX ? */
3264 forbid_setid('m', FALSE); /* XXX ? */
3269 const char *use = "use ";
3271 /* -M-foo == 'no foo' */
3272 /* Leading space on " no " is deliberate, to make both
3273 possibilities the same length. */
3274 if (*s == '-') { use = " no "; ++s; }
3275 sv = newSVpvn(use,4);
3277 /* We allow -M'Module qw(Foo Bar)' */
3278 while(isALNUM(*s) || *s==':') {
3287 Perl_croak(aTHX_ "Module name required with -%c option",
3290 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3291 "contains single ':'",
3292 (int)(s - start), start, option);
3293 end = s + strlen(s);
3295 sv_catpvn(sv, start, end - start);
3296 if (option == 'm') {
3298 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
3299 sv_catpvs( sv, " ()");
3302 sv_catpvn(sv, start, s-start);
3303 /* Use NUL as q''-delimiter. */
3304 sv_catpvs(sv, " split(/,/,q\0");
3306 sv_catpvn(sv, s, end - s);
3307 sv_catpvs(sv, "\0)");
3310 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
3313 Perl_croak(aTHX_ "Missing argument to -%c", option);
3324 forbid_setid('s', FALSE);
3325 PL_doswitches = TRUE;
3330 #if SILENT_NO_TAINT_SUPPORT
3331 /* silently ignore */
3332 #elif NO_TAINT_SUPPORT
3333 Perl_croak("This perl was compiled without taint support. "
3334 "Cowardly refusing to run with -t or -T flags");
3342 PL_do_undump = TRUE;
3352 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
3353 PL_dowarn |= G_WARN_ON;
3358 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
3359 if (!specialWARN(PL_compiling.cop_warnings))
3360 PerlMemShared_free(PL_compiling.cop_warnings);
3361 PL_compiling.cop_warnings = pWARN_ALL ;
3365 PL_dowarn = G_WARN_ALL_OFF;
3366 if (!specialWARN(PL_compiling.cop_warnings))
3367 PerlMemShared_free(PL_compiling.cop_warnings);
3368 PL_compiling.cop_warnings = pWARN_NONE ;
3375 if (s[0] == '-') /* Additional switches on #! line. */
3380 #if defined(WIN32) || !defined(PERL_STRICT_CR)
3386 #ifdef ALTERNATE_SHEBANG
3387 case 'S': /* OS/2 needs -S on "extproc" line. */
3390 case 'e': case 'f': case 'x': case 'E':
3391 #ifndef ALTERNATE_SHEBANG
3395 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
3398 "Unrecognized switch: -%.1s (-h will show valid options)",s
3408 PerlIO * PIO_stdout;
3409 if (!sv_derived_from(PL_patchlevel, "version"))
3410 upg_version(PL_patchlevel, TRUE);
3413 SV* level= vstringify(PL_patchlevel);
3414 #ifdef PERL_PATCHNUM
3415 # ifdef PERL_GIT_UNCOMMITTED_CHANGES
3416 SV *num = newSVpvs(PERL_PATCHNUM "*");
3418 SV *num = newSVpvs(PERL_PATCHNUM);
3421 STRLEN level_len, num_len;
3422 char * level_str, * num_str;
3423 num_str = SvPV(num, num_len);
3424 level_str = SvPV(level, level_len);
3425 if (num_len>=level_len && strnEQ(num_str,level_str,level_len)) {
3426 SvREFCNT_dec(level);
3429 Perl_sv_catpvf(aTHX_ level, " (%"SVf")", num);
3434 PIO_stdout = PerlIO_stdout();
3435 PerlIO_printf(PIO_stdout,
3436 "\nThis is perl " STRINGIFY(PERL_REVISION)
3437 ", version " STRINGIFY(PERL_VERSION)
3438 ", subversion " STRINGIFY(PERL_SUBVERSION)
3439 " (%"SVf") built for " ARCHNAME, level
3441 SvREFCNT_dec(level);
3444 PIO_stdout = PerlIO_stdout();
3445 /* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3446 PerlIO_printf(PIO_stdout,
3447 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
3448 SVfARG(vstringify(PL_patchlevel))));
3449 PerlIO_printf(PIO_stdout,
3450 Perl_form(aTHX_ " built under %s at %s %s\n",
3451 OSNAME, __DATE__, __TIME__));
3452 PerlIO_printf(PIO_stdout,
3453 Perl_form(aTHX_ " OS Specific Release: %s\n",
3456 #if defined(LOCAL_PATCH_COUNT)
3457 if (LOCAL_PATCH_COUNT > 0)
3458 PerlIO_printf(PIO_stdout,
3459 "\n(with %d registered patch%s, "
3460 "see perl -V for more detail)",
3462 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
3465 PerlIO_printf(PIO_stdout,
3466 "\n\nCopyright 1987-2012, Larry Wall\n");
3468 PerlIO_printf(PIO_stdout,
3469 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
3472 PerlIO_printf(PIO_stdout,
3473 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3474 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
3477 PerlIO_printf(PIO_stdout,
3478 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
3479 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
3482 PerlIO_printf(PIO_stdout,
3483 "BeOS port Copyright Tom Spindler, 1997-1999\n");
3486 PerlIO_printf(PIO_stdout,
3487 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
3490 PerlIO_printf(PIO_stdout,
3491 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
3494 PerlIO_printf(PIO_stdout,
3495 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
3498 PerlIO_printf(PIO_stdout,
3499 "EPOC port by Olaf Flebbe, 1999-2002\n");
3502 PerlIO_printf(PIO_stdout,
3503 "WINCE port by Rainer Keuchel, 2001-2002\n"
3504 "Built on " __DATE__ " " __TIME__ "\n\n");
3507 #ifdef __SYMBIAN32__
3508 PerlIO_printf(PIO_stdout,
3509 "Symbian port by Nokia, 2004-2005\n");
3511 #ifdef BINARY_BUILD_NOTICE
3512 BINARY_BUILD_NOTICE;
3514 PerlIO_printf(PIO_stdout,
3516 Perl may be copied only under the terms of either the Artistic License or the\n\
3517 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
3518 Complete documentation for Perl, including FAQ lists, should be found on\n\
3519 this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
3520 Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
3524 /* compliments of Tom Christiansen */
3526 /* unexec() can be found in the Gnu emacs distribution */
3527 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
3530 #include <lib$routines.h>
3534 Perl_my_unexec(pTHX)
3536 PERL_UNUSED_CONTEXT;
3538 SV * prog = newSVpv(BIN_EXP, 0);
3539 SV * file = newSVpv(PL_origfilename, 0);
3543 sv_catpvs(prog, "/perl");
3544 sv_catpvs(file, ".perldump");
3546 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3547 /* unexec prints msg to stderr in case of failure */
3548 PerlProc_exit(status);
3551 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
3552 # elif defined(WIN32) || defined(__CYGWIN__)
3553 Perl_croak(aTHX_ "dump is not supported");
3555 ABORT(); /* for use with undump */
3560 /* initialize curinterp */
3566 # define PERLVAR(prefix,var,type)
3567 # define PERLVARA(prefix,var,n,type)
3568 # if defined(PERL_IMPLICIT_CONTEXT)
3569 # define PERLVARI(prefix,var,type,init) aTHX->prefix##var = init;
3570 # define PERLVARIC(prefix,var,type,init) aTHX->prefix##var = init;
3572 # define PERLVARI(prefix,var,type,init) PERL_GET_INTERP->var = init;
3573 # define PERLVARIC(prefix,var,type,init) PERL_GET_INTERP->var = init;
3575 # include "intrpvar.h"
3581 # define PERLVAR(prefix,var,type)
3582 # define PERLVARA(prefix,var,n,type)
3583 # define PERLVARI(prefix,var,type,init) PL_##var = init;
3584 # define PERLVARIC(prefix,var,type,init) PL_##var = init;
3585 # include "intrpvar.h"
3592 /* As these are inside a structure, PERLVARI isn't capable of initialising
3594 PL_reg_oldcurpm = PL_reg_curpm = NULL;
3595 PL_reg_poscache = PL_reg_starttry = NULL;
3599 S_init_main_stash(pTHX)
3604 PL_curstash = PL_defstash = (HV *)SvREFCNT_inc_simple_NN(newHV());
3605 /* We know that the string "main" will be in the global shared string
3606 table, so it's a small saving to use it rather than allocate another
3608 PL_curstname = newSVpvs_share("main");
3609 gv = gv_fetchpvs("main::", GV_ADD|GV_NOTQUAL, SVt_PVHV);
3610 /* If we hadn't caused another reference to "main" to be in the shared
3611 string table above, then it would be worth reordering these two,
3612 because otherwise all we do is delete "main" from it as a consequence
3613 of the SvREFCNT_dec, only to add it again with hv_name_set */
3614 SvREFCNT_dec(GvHV(gv));
3615 hv_name_set(PL_defstash, "main", 4, 0);
3616 GvHV(gv) = MUTABLE_HV(SvREFCNT_inc_simple(PL_defstash));
3618 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpvs("INC", GV_ADD|GV_NOTQUAL,
3620 SvREFCNT_inc_simple_void(PL_incgv); /* Don't allow it to be freed */
3621 GvMULTI_on(PL_incgv);
3622 PL_hintgv = gv_fetchpvs("\010", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^H */
3623 GvMULTI_on(PL_hintgv);
3624 PL_defgv = gv_fetchpvs("_", GV_ADD|GV_NOTQUAL, SVt_PVAV);
3625 SvREFCNT_inc_simple_void(PL_defgv);
3626 PL_errgv = gv_HVadd(gv_fetchpvs("@", GV_ADD|GV_NOTQUAL, SVt_PV));
3627 SvREFCNT_inc_simple_void(PL_errgv);
3628 GvMULTI_on(PL_errgv);
3629 PL_replgv = gv_fetchpvs("\022", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^R */
3630 GvMULTI_on(PL_replgv);
3631 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
3632 #ifdef PERL_DONT_CREATE_GVSV
3635 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
3637 SET_CURSTASH(PL_defstash);
3638 CopSTASH_set(&PL_compiling, PL_defstash);
3639 PL_debstash = GvHV(gv_fetchpvs("DB::", GV_ADDMULTI, SVt_PVHV));
3640 PL_globalstash = GvHV(gv_fetchpvs("CORE::GLOBAL::", GV_ADDMULTI,
3642 /* We must init $/ before switches are processed. */
3643 sv_setpvs(get_sv("/", GV_ADD), "\n");
3647 S_open_script(pTHX_ const char *scriptname, bool dosearch, bool *suidscript)
3650 PerlIO *rsfp = NULL;
3653 PERL_ARGS_ASSERT_OPEN_SCRIPT;
3656 PL_origfilename = savepvs("-e");
3659 /* if find_script() returns, it returns a malloc()-ed value */
3660 scriptname = PL_origfilename = find_script(scriptname, dosearch, NULL, 1);
3662 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
3663 const char *s = scriptname + 8;
3669 * Tell apart "normal" usage of fdscript, e.g.
3670 * with bash on FreeBSD:
3671 * perl <( echo '#!perl -DA'; echo 'print "$0\n"')
3672 * from usage in suidperl.
3673 * Does any "normal" usage leave garbage after the number???
3674 * Is it a mistake to use a similar /dev/fd/ construct for
3679 * Be supersafe and do some sanity-checks.
3680 * Still, can we be sure we got the right thing?
3683 Perl_croak(aTHX_ "Wrong syntax (suid) fd script name \"%s\"\n", s);
3686 Perl_croak(aTHX_ "Missing (suid) fd script name\n");
3688 scriptname = savepv(s + 1);
3689 Safefree(PL_origfilename);
3690 PL_origfilename = (char *)scriptname;
3695 CopFILE_free(PL_curcop);
3696 CopFILE_set(PL_curcop, PL_origfilename);
3697 if (*PL_origfilename == '-' && PL_origfilename[1] == '\0')
3698 scriptname = (char *)"";
3699 if (fdscript >= 0) {
3700 rsfp = PerlIO_fdopen(fdscript,PERL_SCRIPT_MODE);
3702 else if (!*scriptname) {
3703 forbid_setid(0, *suidscript);
3707 #ifdef FAKE_BIT_BUCKET
3708 /* This hack allows one not to have /dev/null (or BIT_BUCKET as it
3709 * is called) and still have the "-e" work. (Believe it or not,
3710 * a /dev/null is required for the "-e" to work because source
3711 * filter magic is used to implement it. ) This is *not* a general
3712 * replacement for a /dev/null. What we do here is create a temp
3713 * file (an empty file), open up that as the script, and then
3714 * immediately close and unlink it. Close enough for jazz. */
3715 #define FAKE_BIT_BUCKET_PREFIX "/tmp/perlnull-"
3716 #define FAKE_BIT_BUCKET_SUFFIX "XXXXXXXX"
3717 #define FAKE_BIT_BUCKET_TEMPLATE FAKE_BIT_BUCKET_PREFIX FAKE_BIT_BUCKET_SUFFIX
3718 char tmpname[sizeof(FAKE_BIT_BUCKET_TEMPLATE)] = {
3719 FAKE_BIT_BUCKET_TEMPLATE
3721 const char * const err = "Failed to create a fake bit bucket";
3722 if (strEQ(scriptname, BIT_BUCKET)) {
3723 #ifdef HAS_MKSTEMP /* Hopefully mkstemp() is safe here. */
3724 int tmpfd = mkstemp(tmpname);
3726 scriptname = tmpname;
3729 Perl_croak(aTHX_ err);
3732 scriptname = mktemp(tmpname);
3734 Perl_croak(aTHX_ err);
3739 rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
3740 #ifdef FAKE_BIT_BUCKET
3741 if (memEQ(scriptname, FAKE_BIT_BUCKET_PREFIX,
3742 sizeof(FAKE_BIT_BUCKET_PREFIX) - 1)
3743 && strlen(scriptname) == sizeof(tmpname) - 1) {
3746 scriptname = BIT_BUCKET;
3750 /* PSz 16 Sep 03 Keep neat error message */
3752 Perl_croak(aTHX_ "Can't open "BIT_BUCKET": %s\n", Strerror(errno));
3754 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3755 CopFILE(PL_curcop), Strerror(errno));
3757 #if defined(HAS_FCNTL) && defined(F_SETFD)
3758 /* ensure close-on-exec */
3759 fcntl(PerlIO_fileno(rsfp), F_SETFD, 1);
3765 * I_SYSSTATVFS HAS_FSTATVFS
3767 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
3768 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
3769 * here so that metaconfig picks them up. */
3772 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
3773 /* Don't even need this function. */
3776 S_validate_suid(pTHX_ PerlIO *rsfp)
3778 const UV my_uid = PerlProc_getuid();
3779 const UV my_euid = PerlProc_geteuid();
3780 const UV my_gid = PerlProc_getgid();
3781 const UV my_egid = PerlProc_getegid();
3783 PERL_ARGS_ASSERT_VALIDATE_SUID;
3785 if (my_euid != my_uid || my_egid != my_gid) { /* (suidperl doesn't exist, in fact) */
3788 PerlLIO_fstat(PerlIO_fileno(rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3789 if ((my_euid != my_uid && my_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3791 (my_egid != my_gid && my_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3794 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3795 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3796 /* not set-id, must be wrapped */
3799 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3802 S_find_beginning(pTHX_ SV* linestr_sv, PerlIO *rsfp)
3808 PERL_ARGS_ASSERT_FIND_BEGINNING;
3810 /* skip forward in input to the real script? */
3813 if ((s = sv_gets(linestr_sv, rsfp, 0)) == NULL)
3814 Perl_croak(aTHX_ "No Perl script found in input\n");
3816 } while (!(*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))));
3817 PerlIO_ungetc(rsfp, '\n'); /* to keep line count right */
3818 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3820 while (*s == ' ' || *s == '\t') s++;
3822 while (isDIGIT(s2[-1]) || s2[-1] == '-' || s2[-1] == '.'
3823 || s2[-1] == '_') s2--;
3824 if (strnEQ(s2-4,"perl",4))
3825 while ((s = moreswitches(s)))
3834 /* no need to do anything here any more if we don't
3836 #if !NO_TAINT_SUPPORT
3838 const UV my_uid = PerlProc_getuid();
3839 const UV my_euid = PerlProc_geteuid();
3840 const UV my_gid = PerlProc_getgid();
3841 const UV my_egid = PerlProc_getegid();
3843 /* Should not happen: */
3844 CHECK_MALLOC_TAINT(my_uid && (my_euid != my_uid || my_egid != my_gid));
3845 TAINTING_set( TAINTING_get | (my_uid && (my_euid != my_uid || my_egid != my_gid)) );
3849 * Should go by suidscript, not uid!=euid: why disallow
3850 * system("ls") in scripts run from setuid things?
3851 * Or, is this run before we check arguments and set suidscript?
3852 * What about SETUID_SCRIPTS_ARE_SECURE_NOW: could we use fdscript then?
3853 * (We never have suidscript, can we be sure to have fdscript?)
3854 * Or must then go by UID checks? See comments in forbid_setid also.
3858 /* This is used very early in the lifetime of the program,
3859 * before even the options are parsed, so PL_tainting has
3860 * not been initialized properly. */
3862 Perl_doing_taint(int argc, char *argv[], char *envp[])
3864 #ifndef PERL_IMPLICIT_SYS
3865 /* If we have PERL_IMPLICIT_SYS we can't call getuid() et alia
3866 * before we have an interpreter-- and the whole point of this
3867 * function is to be called at such an early stage. If you are on
3868 * a system with PERL_IMPLICIT_SYS but you do have a concept of
3869 * "tainted because running with altered effective ids', you'll
3870 * have to add your own checks somewhere in here. The two most
3871 * known samples of 'implicitness' are Win32 and NetWare, neither
3872 * of which has much of concept of 'uids'. */
3873 int uid = PerlProc_getuid();
3874 int euid = PerlProc_geteuid();
3875 int gid = PerlProc_getgid();
3876 int egid = PerlProc_getegid();
3883 if (uid && (euid != uid || egid != gid))
3885 #endif /* !PERL_IMPLICIT_SYS */
3886 /* This is a really primitive check; environment gets ignored only
3887 * if -T are the first chars together; otherwise one gets
3888 * "Too late" message. */
3889 if ( argc > 1 && argv[1][0] == '-'
3890 && (argv[1][1] == 't' || argv[1][1] == 'T') )
3895 /* Passing the flag as a single char rather than a string is a slight space
3896 optimisation. The only message that isn't /^-.$/ is
3897 "program input from stdin", which is substituted in place of '\0', which
3898 could never be a command line flag. */
3900 S_forbid_setid(pTHX_ const char flag, const bool suidscript) /* g */
3903 char string[3] = "-x";
3904 const char *message = "program input from stdin";
3911 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
3912 if (PerlProc_getuid() != PerlProc_geteuid())
3913 Perl_croak(aTHX_ "No %s allowed while running setuid", message);
3914 if (PerlProc_getgid() != PerlProc_getegid())
3915 Perl_croak(aTHX_ "No %s allowed while running setgid", message);
3916 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3918 Perl_croak(aTHX_ "No %s allowed with (suid) fdscript", message);
3922 Perl_init_dbargs(pTHX)
3924 AV *const args = PL_dbargs = GvAV(gv_AVadd((gv_fetchpvs("DB::args",
3929 /* Someone has already created it.
3930 It might have entries, and if we just turn off AvREAL(), they will
3931 "leak" until global destruction. */
3933 if (SvTIED_mg((const SV *)args, PERL_MAGIC_tied))
3934 Perl_croak(aTHX_ "Cannot set tied @DB::args");
3936 AvREIFY_only(PL_dbargs);
3940 Perl_init_debugger(pTHX)
3943 HV * const ostash = PL_curstash;
3945 PL_curstash = (HV *)SvREFCNT_inc_simple(PL_debstash);
3947 Perl_init_dbargs(aTHX);
3948 PL_DBgv = gv_fetchpvs("DB::DB", GV_ADDMULTI, SVt_PVGV);
3949 PL_DBline = gv_fetchpvs("DB::dbline", GV_ADDMULTI, SVt_PVAV);
3950 PL_DBsub = gv_HVadd(gv_fetchpvs("DB::sub", GV_ADDMULTI, SVt_PVHV));
3951 PL_DBsingle = GvSV((gv_fetchpvs("DB::single", GV_ADDMULTI, SVt_PV)));
3952 if (!SvIOK(PL_DBsingle))
3953 sv_setiv(PL_DBsingle, 0);
3954 PL_DBtrace = GvSV((gv_fetchpvs("DB::trace", GV_ADDMULTI, SVt_PV)));
3955 if (!SvIOK(PL_DBtrace))
3956 sv_setiv(PL_DBtrace, 0);
3957 PL_DBsignal = GvSV((gv_fetchpvs("DB::signal", GV_ADDMULTI, SVt_PV)));
3958 if (!SvIOK(PL_DBsignal))
3959 sv_setiv(PL_DBsignal, 0);
3960 SvREFCNT_dec(PL_curstash);
3961 PL_curstash = ostash;
3964 #ifndef STRESS_REALLOC
3965 #define REASONABLE(size) (size)
3967 #define REASONABLE(size) (1) /* unreasonable */
3971 Perl_init_stacks(pTHX)
3974 /* start with 128-item stack and 8K cxstack */
3975 PL_curstackinfo = new_stackinfo(REASONABLE(128),
3976 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3977 PL_curstackinfo->si_type = PERLSI_MAIN;
3978 PL_curstack = PL_curstackinfo->si_stack;
3979 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
3981 PL_stack_base = AvARRAY(PL_curstack);
3982 PL_stack_sp = PL_stack_base;
3983 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
3985 Newx(PL_tmps_stack,REASONABLE(128),SV*);
3988 PL_tmps_max = REASONABLE(128);
3990 Newx(PL_markstack,REASONABLE(32),I32);
3991 PL_markstack_ptr = PL_markstack;
3992 PL_markstack_max = PL_markstack + REASONABLE(32);
3996 Newx(PL_scopestack,REASONABLE(32),I32);
3998 Newx(PL_scopestack_name,REASONABLE(32),const char*);
4000 PL_scopestack_ix = 0;
4001 PL_scopestack_max = REASONABLE(32);
4003 Newx(PL_savestack,REASONABLE(128),ANY);
4004 PL_savestack_ix = 0;
4005 PL_savestack_max = REASONABLE(128);
4014 while (PL_curstackinfo->si_next)
4015 PL_curstackinfo = PL_curstackinfo->si_next;
4016 while (PL_curstackinfo) {
4017 PERL_SI *p = PL_curstackinfo->si_prev;
4018 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
4019 Safefree(PL_curstackinfo->si_cxstack);
4020 Safefree(PL_curstackinfo);
4021 PL_curstackinfo = p;
4023 Safefree(PL_tmps_stack);
4024 Safefree(PL_markstack);
4025 Safefree(PL_scopestack);
4027 Safefree(PL_scopestack_name);
4029 Safefree(PL_savestack);
4033 Perl_populate_isa(pTHX_ const char *name, STRLEN len, ...)
4035 GV *const gv = gv_fetchpvn(name, len, GV_ADD | GV_ADDMULTI, SVt_PVAV);
4036 AV *const isa = GvAVn(gv);
4039 PERL_ARGS_ASSERT_POPULATE_ISA;
4041 if(AvFILLp(isa) != -1)
4044 /* NOTE: No support for tied ISA */
4046 va_start(args, len);
4048 const char *const parent = va_arg(args, const char*);
4053 parent_len = va_arg(args, size_t);
4055 /* Arguments are supplied with a trailing :: */
4056 assert(parent_len > 2);
4057 assert(parent[parent_len - 1] == ':');
4058 assert(parent[parent_len - 2] == ':');
4059 av_push(isa, newSVpvn(parent, parent_len - 2));
4060 (void) gv_fetchpvn(parent, parent_len, GV_ADD, SVt_PVGV);
4067 S_init_predump_symbols(pTHX)
4073 sv_setpvs(get_sv("\"", GV_ADD), " ");
4074 PL_ofsgv = (GV*)SvREFCNT_inc(gv_fetchpvs(",", GV_ADD|GV_NOTQUAL, SVt_PV));
4077 /* Historically, PVIOs were blessed into IO::Handle, unless
4078 FileHandle was loaded, in which case they were blessed into
4079 that. Action at a distance.
4080 However, if we simply bless into IO::Handle, we break code
4081 that assumes that PVIOs will have (among others) a seek
4082 method. IO::File inherits from IO::Handle and IO::Seekable,
4083 and provides the needed methods. But if we simply bless into
4084 it, then we break code that assumed that by loading
4085 IO::Handle, *it* would work.
4086 So a compromise is to set up the correct @IO::File::ISA,
4087 so that code that does C<use IO::Handle>; will still work.
4090 Perl_populate_isa(aTHX_ STR_WITH_LEN("IO::File::ISA"),
4091 STR_WITH_LEN("IO::Handle::"),
4092 STR_WITH_LEN("IO::Seekable::"),
4093 STR_WITH_LEN("Exporter::"),
4096 PL_stdingv = gv_fetchpvs("STDIN", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4097 GvMULTI_on(PL_stdingv);
4098 io = GvIOp(PL_stdingv);
4099 IoTYPE(io) = IoTYPE_RDONLY;
4100 IoIFP(io) = PerlIO_stdin();
4101 tmpgv = gv_fetchpvs("stdin", GV_ADD|GV_NOTQUAL, SVt_PV);
4103 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4105 tmpgv = gv_fetchpvs("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4108 IoTYPE(io) = IoTYPE_WRONLY;
4109 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
4111 tmpgv = gv_fetchpvs("stdout", GV_ADD|GV_NOTQUAL, SVt_PV);
4113 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4115 PL_stderrgv = gv_fetchpvs("STDERR", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4116 GvMULTI_on(PL_stderrgv);
4117 io = GvIOp(PL_stderrgv);
4118 IoTYPE(io) = IoTYPE_WRONLY;
4119 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
4120 tmpgv = gv_fetchpvs("stderr", GV_ADD|GV_NOTQUAL, SVt_PV);
4122 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4124 PL_statname = newSVpvs(""); /* last filename we did stat on */
4128 Perl_init_argv_symbols(pTHX_ register int argc, register char **argv)
4132 PERL_ARGS_ASSERT_INIT_ARGV_SYMBOLS;
4134 argc--,argv++; /* skip name of script */
4135 if (PL_doswitches) {
4136 for (; argc > 0 && **argv == '-'; argc--,argv++) {
4140 if (argv[0][1] == '-' && !argv[0][2]) {
4144 if ((s = strchr(argv[0], '='))) {
4145 const char *const start_name = argv[0] + 1;
4146 sv_setpv(GvSV(gv_fetchpvn_flags(start_name, s - start_name,
4147 TRUE, SVt_PV)), s + 1);
4150 sv_setiv(GvSV(gv_fetchpv(argv[0]+1, GV_ADD, SVt_PV)),1);
4153 if ((PL_argvgv = gv_fetchpvs("ARGV", GV_ADD|GV_NOTQUAL, SVt_PVAV))) {
4154 GvMULTI_on(PL_argvgv);
4155 (void)gv_AVadd(PL_argvgv);
4156 av_clear(GvAVn(PL_argvgv));
4157 for (; argc > 0; argc--,argv++) {
4158 SV * const sv = newSVpv(argv[0],0);
4159 av_push(GvAVn(PL_argvgv),sv);
4160 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
4161 if (PL_unicode & PERL_UNICODE_ARGV_FLAG)
4164 if (PL_unicode & PERL_UNICODE_WIDESYSCALLS_FLAG) /* Sarathy? */
4165 (void)sv_utf8_decode(sv);
4169 if (PL_inplace && (!PL_argvgv || AvFILL(GvAV(PL_argvgv)) == -1))
4170 Perl_ck_warner_d(aTHX_ packWARN(WARN_INPLACE),
4171 "-i used with no filenames on the command line, "
4172 "reading from STDIN");
4176 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
4181 PERL_ARGS_ASSERT_INIT_POSTDUMP_SYMBOLS;
4183 PL_toptarget = newSV_type(SVt_PVIV);
4184 sv_setpvs(PL_toptarget, "");
4185 PL_bodytarget = newSV_type(SVt_PVIV);
4186 sv_setpvs(PL_bodytarget, "");
4187 PL_formtarget = PL_bodytarget;
4191 init_argv_symbols(argc,argv);
4193 if ((tmpgv = gv_fetchpvs("0", GV_ADD|GV_NOTQUAL, SVt_PV))) {
4194 sv_setpv(GvSV(tmpgv),PL_origfilename);
4196 if ((PL_envgv = gv_fetchpvs("ENV", GV_ADD|GV_NOTQUAL, SVt_PVHV))) {
4198 bool env_is_not_environ;
4199 GvMULTI_on(PL_envgv);
4200 hv = GvHVn(PL_envgv);
4201 hv_magic(hv, NULL, PERL_MAGIC_env);
4203 #ifdef USE_ENVIRON_ARRAY
4204 /* Note that if the supplied env parameter is actually a copy
4205 of the global environ then it may now point to free'd memory
4206 if the environment has been modified since. To avoid this
4207 problem we treat env==NULL as meaning 'use the default'
4211 env_is_not_environ = env != environ;
4212 if (env_is_not_environ
4213 # ifdef USE_ITHREADS
4214 && PL_curinterp == aTHX
4223 for (; *env; env++) {
4226 if (!(s = strchr(old_var,'=')) || s == old_var)
4229 #if defined(MSDOS) && !defined(DJGPP)
4231 (void)strupr(old_var);
4234 sv = newSVpv(s+1, 0);
4235 (void)hv_store(hv, old_var, s - old_var, sv, 0);
4236 if (env_is_not_environ)
4240 #endif /* USE_ENVIRON_ARRAY */
4241 #endif /* !PERL_MICRO */
4245 /* touch @F array to prevent spurious warnings 20020415 MJD */
4247 (void) get_av("main::F", GV_ADD | GV_ADDMULTI);
4252 S_init_perllib(pTHX)
4256 const char *perl5lib = NULL;
4259 #if defined(WIN32) && !defined(PERL_IS_MINIPERL)
4263 if (!TAINTING_get) {
4265 perl5lib = PerlEnv_getenv("PERL5LIB");
4267 * It isn't possible to delete an environment variable with
4268 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4269 * case we treat PERL5LIB as undefined if it has a zero-length value.
4271 #if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
4272 if (perl5lib && *perl5lib != '\0')
4276 incpush_use_sep(perl5lib, 0, INCPUSH_ADD_SUB_DIRS);
4278 s = PerlEnv_getenv("PERLLIB");
4280 incpush_use_sep(s, 0, 0);
4283 /* Treat PERL5?LIB as a possible search list logical name -- the
4284 * "natural" VMS idiom for a Unix path string. We allow each
4285 * element to be a set of |-separated directories for compatibility.
4289 if (my_trnlnm("PERL5LIB",buf,0))
4291 incpush_use_sep(buf, 0, INCPUSH_ADD_SUB_DIRS);
4292 } while (my_trnlnm("PERL5LIB",buf,++idx));
4294 while (my_trnlnm("PERLLIB",buf,idx++))
4295 incpush_use_sep(buf, 0, 0);
4300 #ifndef PERL_IS_MINIPERL
4301 /* miniperl gets just -I..., the split of $ENV{PERL5LIB}, and "." in @INC
4302 (and not the architecture specific directories from $ENV{PERL5LIB}) */
4304 /* Use the ~-expanded versions of APPLLIB (undocumented),
4305 SITEARCH, SITELIB, VENDORARCH, VENDORLIB, ARCHLIB and PRIVLIB
4308 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP),
4309 INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4313 /* sitearch is always relative to sitelib on Windows for
4314 * DLL-based path intuition to work correctly */
4315 # if !defined(WIN32)
4316 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITEARCH_EXP),
4317 INCPUSH_CAN_RELOCATE);
4323 /* this picks up sitearch as well */
4324 s = win32_get_sitelib(PERL_FS_VERSION, &len);
4326 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4328 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_EXP), INCPUSH_CAN_RELOCATE);
4332 #ifdef PERL_VENDORARCH_EXP
4333 /* vendorarch is always relative to vendorlib on Windows for
4334 * DLL-based path intuition to work correctly */
4335 # if !defined(WIN32)
4336 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORARCH_EXP),
4337 INCPUSH_CAN_RELOCATE);
4341 #ifdef PERL_VENDORLIB_EXP
4343 /* this picks up vendorarch as well */
4344 s = win32_get_vendorlib(PERL_FS_VERSION, &len);
4346 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4348 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_EXP),
4349 INCPUSH_CAN_RELOCATE);
4354 S_incpush_use_sep(aTHX_ STR_WITH_LEN(ARCHLIB_EXP), INCPUSH_CAN_RELOCATE);
4358 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
4362 s = win32_get_privlib(PERL_FS_VERSION, &len);
4364 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4367 S_incpush_use_sep(aTHX_ PRIVLIB_EXP, 0, INCPUSH_CAN_RELOCATE);
4369 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PRIVLIB_EXP), INCPUSH_CAN_RELOCATE);
4373 #ifdef PERL_OTHERLIBDIRS
4374 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS),
4375 INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_NOT_BASEDIR
4376 |INCPUSH_CAN_RELOCATE);
4379 if (!TAINTING_get) {
4382 * It isn't possible to delete an environment variable with
4383 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4384 * case we treat PERL5LIB as undefined if it has a zero-length value.
4386 #if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
4387 if (perl5lib && *perl5lib != '\0')
4391 incpush_use_sep(perl5lib, 0,
4392 INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
4394 /* Treat PERL5?LIB as a possible search list logical name -- the
4395 * "natural" VMS idiom for a Unix path string. We allow each
4396 * element to be a set of |-separated directories for compatibility.
4400 if (my_trnlnm("PERL5LIB",buf,0))
4402 incpush_use_sep(buf, 0,
4403 INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
4404 } while (my_trnlnm("PERL5LIB",buf,++idx));
4408 /* Use the ~-expanded versions of APPLLIB (undocumented),
4409 SITELIB and VENDORLIB for older versions
4412 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP), INCPUSH_ADD_OLD_VERS
4413 |INCPUSH_NOT_BASEDIR|INCPUSH_CAN_RELOCATE);
4416 #if defined(SITELIB_STEM) && defined(PERL_INC_VERSION_LIST)
4417 /* Search for version-specific dirs below here */
4418 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_STEM),
4419 INCPUSH_ADD_OLD_VERS|INCPUSH_CAN_RELOCATE);
4423 #if defined(PERL_VENDORLIB_STEM) && defined(PERL_INC_VERSION_LIST)
4424 /* Search for version-specific dirs below here */
4425 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_STEM),
4426 INCPUSH_ADD_OLD_VERS|INCPUSH_CAN_RELOCATE);
4429 #ifdef PERL_OTHERLIBDIRS
4430 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS),
4431 INCPUSH_ADD_OLD_VERS|INCPUSH_ADD_ARCHONLY_SUB_DIRS
4432 |INCPUSH_CAN_RELOCATE);
4434 #endif /* !PERL_IS_MINIPERL */
4437 S_incpush(aTHX_ STR_WITH_LEN("."), 0);
4440 #if defined(DOSISH) || defined(EPOC) || defined(__SYMBIAN32__)
4441 # define PERLLIB_SEP ';'
4444 # define PERLLIB_SEP '|'
4446 # define PERLLIB_SEP ':'
4449 #ifndef PERLLIB_MANGLE
4450 # define PERLLIB_MANGLE(s,n) (s)
4453 #ifndef PERL_IS_MINIPERL
4454 /* Push a directory onto @INC if it exists.
4455 Generate a new SV if we do this, to save needing to copy the SV we push
4458 S_incpush_if_exists(pTHX_ AV *const av, SV *dir, SV *const stem)
4463 PERL_ARGS_ASSERT_INCPUSH_IF_EXISTS;
4465 if (PerlLIO_stat(SvPVX_const(dir), &tmpstatbuf) >= 0 &&
4466 S_ISDIR(tmpstatbuf.st_mode)) {
4468 dir = newSVsv(stem);
4470 /* Truncate dir back to stem. */
4471 SvCUR_set(dir, SvCUR(stem));
4478 S_mayberelocate(pTHX_ const char *const dir, STRLEN len, U32 flags)
4480 const U8 canrelocate = (U8)flags & INCPUSH_CAN_RELOCATE;
4483 PERL_ARGS_ASSERT_MAYBERELOCATE;
4487 /* I am not convinced that this is valid when PERLLIB_MANGLE is
4488 defined to so something (in os2/os2.c), but the code has been
4489 this way, ignoring any possible changed of length, since
4490 760ac839baf413929cd31cc32ffd6dba6b781a81 (5.003_02) so I'll leave
4492 libdir = newSVpvn(PERLLIB_MANGLE(dir, len), len);
4494 libdir = newSVpv(PERLLIB_MANGLE(dir, 0), 0);
4501 if ((unix = tounixspec_ts(SvPV(libdir,len),NULL)) != NULL) {
4503 while (unix[len-1] == '/') len--; /* Cosmetic */
4504 sv_usepvn(libdir,unix,len);
4507 PerlIO_printf(Perl_error_log,
4508 "Failed to unixify @INC element \"%s\"\n",
4509 SvPV_nolen_const(libdir));
4513 /* Do the if() outside the #ifdef to avoid warnings about an unused
4516 #ifdef PERL_RELOCATABLE_INC
4518 * Relocatable include entries are marked with a leading .../
4521 * 0: Remove that leading ".../"
4522 * 1: Remove trailing executable name (anything after the last '/')
4523 * from the perl path to give a perl prefix
4525 * While the @INC element starts "../" and the prefix ends with a real
4526 * directory (ie not . or ..) chop that real directory off the prefix
4527 * and the leading "../" from the @INC element. ie a logical "../"
4529 * Finally concatenate the prefix and the remainder of the @INC element
4530 * The intent is that /usr/local/bin/perl and .../../lib/perl5
4531 * generates /usr/local/lib/perl5
4533 const char *libpath = SvPVX(libdir);
4534 STRLEN libpath_len = SvCUR(libdir);
4535 if (libpath_len >= 4 && memEQ (libpath, ".../", 4)) {
4537 SV * const caret_X = get_sv("\030", 0);
4538 /* Going to use the SV just as a scratch buffer holding a C
4544 /* $^X is *the* source of taint if tainting is on, hence
4545 SvPOK() won't be true. */
4547 assert(SvPOKp(caret_X));
4548 prefix_sv = newSVpvn_flags(SvPVX(caret_X), SvCUR(caret_X),
4550 /* Firstly take off the leading .../
4551 If all else fail we'll do the paths relative to the current
4553 sv_chop(libdir, libpath + 4);
4554 /* Don't use SvPV as we're intentionally bypassing taining,
4555 mortal copies that the mg_get of tainting creates, and
4556 corruption that seems to come via the save stack.
4557 I guess that the save stack isn't correctly set up yet. */
4558 libpath = SvPVX(libdir);
4559 libpath_len = SvCUR(libdir);
4561 /* This would work more efficiently with memrchr, but as it's
4562 only a GNU extension we'd need to probe for it and
4563 implement our own. Not hard, but maybe not worth it? */
4565 prefix = SvPVX(prefix_sv);
4566 lastslash = strrchr(prefix, '/');
4568 /* First time in with the *lastslash = '\0' we just wipe off
4569 the trailing /perl from (say) /usr/foo/bin/perl
4573 while ((*lastslash = '\0'), /* Do that, come what may. */
4574 (libpath_len >= 3 && memEQ(libpath, "../", 3)
4575 && (lastslash = strrchr(prefix, '/')))) {
4576 if (lastslash[1] == '\0'
4577 || (lastslash[1] == '.'
4578 && (lastslash[2] == '/' /* ends "/." */
4579 || (lastslash[2] == '/'
4580 && lastslash[3] == '/' /* or "/.." */
4582 /* Prefix ends "/" or "/." or "/..", any of which
4583 are fishy, so don't do any more logical cleanup.
4587 /* Remove leading "../" from path */
4590 /* Next iteration round the loop removes the last
4591 directory name from prefix by writing a '\0' in
4592 the while clause. */
4594 /* prefix has been terminated with a '\0' to the correct
4595 length. libpath points somewhere into the libdir SV.
4596 We need to join the 2 with '/' and drop the result into
4598 tempsv = Perl_newSVpvf(aTHX_ "%s/%s", prefix, libpath);
4599 SvREFCNT_dec(libdir);
4600 /* And this is the new libdir. */
4603 (PerlProc_getuid() != PerlProc_geteuid() ||
4604 PerlProc_getgid() != PerlProc_getegid())) {
4605 /* Need to taint relocated paths if running set ID */
4606 SvTAINTED_on(libdir);
4609 SvREFCNT_dec(prefix_sv);
4617 S_incpush(pTHX_ const char *const dir, STRLEN len, U32 flags)
4620 #ifndef PERL_IS_MINIPERL
4621 const U8 using_sub_dirs
4622 = (U8)flags & (INCPUSH_ADD_VERSIONED_SUB_DIRS
4623 |INCPUSH_ADD_ARCHONLY_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
4624 const U8 add_versioned_sub_dirs
4625 = (U8)flags & INCPUSH_ADD_VERSIONED_SUB_DIRS;
4626 const U8 add_archonly_sub_dirs
4627 = (U8)flags & INCPUSH_ADD_ARCHONLY_SUB_DIRS;
4628 #ifdef PERL_INC_VERSION_LIST
4629 const U8 addoldvers = (U8)flags & INCPUSH_ADD_OLD_VERS;
4632 const U8 unshift = (U8)flags & INCPUSH_UNSHIFT;
4633 const U8 push_basedir = (flags & INCPUSH_NOT_BASEDIR) ? 0 : 1;
4634 AV *const inc = GvAVn(PL_incgv);
4636 PERL_ARGS_ASSERT_INCPUSH;
4639 /* Could remove this vestigial extra block, if we don't mind a lot of
4640 re-indenting diff noise. */
4642 SV *const libdir = mayberelocate(dir, len, flags);
4643 /* Change 20189146be79a0596543441fa369c6bf7f85103f, to fix RT#6665,
4644 arranged to unshift #! line -I onto the front of @INC. However,
4645 -I can add version and architecture specific libraries, and they
4646 need to go first. The old code assumed that it was always
4647 pushing. Hence to make it work, need to push the architecture
4648 (etc) libraries onto a temporary array, then "unshift" that onto
4649 the front of @INC. */
4650 #ifndef PERL_IS_MINIPERL
4651 AV *const av = (using_sub_dirs) ? (unshift ? newAV() : inc) : NULL;
4654 * BEFORE pushing libdir onto @INC we may first push version- and
4655 * archname-specific sub-directories.
4657 if (using_sub_dirs) {
4658 SV *subdir = newSVsv(libdir);
4659 #ifdef PERL_INC_VERSION_LIST
4660 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
4661 const char * const incverlist[] = { PERL_INC_VERSION_LIST };
4662 const char * const *incver;
4665 if (add_versioned_sub_dirs) {
4666 /* .../version/archname if -d .../version/archname */
4667 sv_catpvs(subdir, "/" PERL_FS_VERSION "/" ARCHNAME);
4668 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4670 /* .../version if -d .../version */
4671 sv_catpvs(subdir, "/" PERL_FS_VERSION);
4672 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4675 #ifdef PERL_INC_VERSION_LIST
4677 for (incver = incverlist; *incver; incver++) {
4678 /* .../xxx if -d .../xxx */
4679 Perl_sv_catpvf(aTHX_ subdir, "/%s", *incver);
4680 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4685 if (add_archonly_sub_dirs) {
4686 /* .../archname if -d .../archname */
4687 sv_catpvs(subdir, "/" ARCHNAME);
4688 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4692 assert (SvREFCNT(subdir) == 1);
4693 SvREFCNT_dec(subdir);
4695 #endif /* !PERL_IS_MINIPERL */
4696 /* finally add this lib directory at the end of @INC */
4698 #ifdef PERL_IS_MINIPERL
4699 const U32 extra = 0;
4701 U32 extra = av_len(av) + 1;
4703 av_unshift(inc, extra + push_basedir);
4705 av_store(inc, extra, libdir);
4706 #ifndef PERL_IS_MINIPERL
4708 /* av owns a reference, av_store() expects to be donated a
4709 reference, and av expects to be sane when it's cleared.
4710 If I wanted to be naughty and wrong, I could peek inside the
4711 implementation of av_clear(), realise that it uses
4712 SvREFCNT_dec() too, so av's array could be a run of NULLs,
4713 and so directly steal from it (with a memcpy() to inc, and
4714 then memset() to NULL them out. But people copy code from the
4715 core expecting it to be best practise, so let's use the API.
4716 Although studious readers will note that I'm not checking any
4718 av_store(inc, extra, SvREFCNT_inc(*av_fetch(av, extra, FALSE)));
4723 else if (push_basedir) {
4724 av_push(inc, libdir);
4727 if (!push_basedir) {
4728 assert (SvREFCNT(libdir) == 1);
4729 SvREFCNT_dec(libdir);
4735 S_incpush_use_sep(pTHX_ const char *p, STRLEN len, U32 flags)
4739 /* This logic has been broken out from S_incpush(). It may be possible to
4742 PERL_ARGS_ASSERT_INCPUSH_USE_SEP;
4744 /* perl compiled with -DPERL_RELOCATABLE_INCPUSH will ignore the len
4745 * argument to incpush_use_sep. This allows creation of relocatable
4746 * Perl distributions that patch the binary at install time. Those
4747 * distributions will have to provide their own relocation tools; this
4748 * is not a feature otherwise supported by core Perl.
4750 #ifndef PERL_RELOCATABLE_INCPUSH
4757 /* Break at all separators */
4758 while ((s = (const char*)memchr(p, PERLLIB_SEP, end - p))) {
4760 /* skip any consecutive separators */
4762 /* Uncomment the next line for PATH semantics */
4763 /* But you'll need to write tests */
4764 /* av_push(GvAVn(PL_incgv), newSVpvs(".")); */
4766 incpush(p, (STRLEN)(s - p), flags);
4771 incpush(p, (STRLEN)(end - p), flags);
4776 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
4780 volatile const line_t oldline = PL_curcop ? CopLINE(PL_curcop) : 0;
4786 PERL_ARGS_ASSERT_CALL_LIST;
4788 while (av_len(paramList) >= 0) {
4789 cv = MUTABLE_CV(av_shift(paramList));
4791 if (paramList == PL_beginav) {
4792 /* save PL_beginav for compiler */
4793 Perl_av_create_and_push(aTHX_ &PL_beginav_save, MUTABLE_SV(cv));
4795 else if (paramList == PL_checkav) {
4796 /* save PL_checkav for compiler */
4797 Perl_av_create_and_push(aTHX_ &PL_checkav_save, MUTABLE_SV(cv));
4799 else if (paramList == PL_unitcheckav) {
4800 /* save PL_unitcheckav for compiler */
4801 Perl_av_create_and_push(aTHX_ &PL_unitcheckav_save, MUTABLE_SV(cv));
4812 PL_madskills |= 16384;
4817 PL_madskills &= ~16384;
4820 (void)SvPV_const(atsv, len);
4822 PL_curcop = &PL_compiling;
4823 CopLINE_set(PL_curcop, oldline);
4824 if (paramList == PL_beginav)
4825 sv_catpvs(atsv, "BEGIN failed--compilation aborted");
4827 Perl_sv_catpvf(aTHX_ atsv,
4828 "%s failed--call queue aborted",
4829 paramList == PL_checkav ? "CHECK"
4830 : paramList == PL_initav ? "INIT"
4831 : paramList == PL_unitcheckav ? "UNITCHECK"
4833 while (PL_scopestack_ix > oldscope)
4836 Perl_croak(aTHX_ "%"SVf"", SVfARG(atsv));
4843 /* my_exit() was called */
4844 while (PL_scopestack_ix > oldscope)
4847 SET_CURSTASH(PL_defstash);
4848 PL_curcop = &PL_compiling;
4849 CopLINE_set(PL_curcop, oldline);
4852 assert(0); /* NOTREACHED */
4855 PL_curcop = &PL_compiling;
4856 CopLINE_set(PL_curcop, oldline);
4859 PerlIO_printf(Perl_error_log, "panic: restartop in call_list\n");
4868 Perl_my_exit(pTHX_ U32 status)
4879 STATUS_EXIT_SET(status);
4886 Perl_my_failure_exit(pTHX)
4890 /* We have been called to fall on our sword. The desired exit code
4891 * should be already set in STATUS_UNIX, but could be shifted over
4892 * by 8 bits. STATUS_UNIX_EXIT_SET will handle the cases where a
4895 * If an error code has not been set, then force the issue.
4897 if (MY_POSIX_EXIT) {
4899 /* According to the die_exit.t tests, if errno is non-zero */
4900 /* It should be used for the error status. */
4902 if (errno == EVMSERR) {
4903 STATUS_NATIVE = vaxc$errno;
4906 /* According to die_exit.t tests, if the child_exit code is */
4907 /* also zero, then we need to exit with a code of 255 */
4908 if ((errno != 0) && (errno < 256))
4909 STATUS_UNIX_EXIT_SET(errno);
4910 else if (STATUS_UNIX < 255) {
4911 STATUS_UNIX_EXIT_SET(255);
4916 /* The exit code could have been set by $? or vmsish which
4917 * means that it may not have fatal set. So convert
4918 * success/warning codes to fatal with out changing
4919 * the POSIX status code. The severity makes VMS native
4920 * status handling work, while UNIX mode programs use the
4921 * the POSIX exit codes.
4923 if ((STATUS_NATIVE & (STS$K_SEVERE|STS$K_ERROR)) == 0) {
4924 STATUS_NATIVE &= STS$M_COND_ID;
4925 STATUS_NATIVE |= STS$K_ERROR | STS$M_INHIB_MSG;
4929 /* Traditionally Perl on VMS always expects a Fatal Error. */
4930 if (vaxc$errno & 1) {
4932 /* So force success status to failure */
4933 if (STATUS_NATIVE & 1)
4938 STATUS_UNIX = EINTR; /* In case something cares */
4943 STATUS_NATIVE = vaxc$errno; /* Should already be this */
4945 /* Encode the severity code */
4946 severity = STATUS_NATIVE & STS$M_SEVERITY;
4947 STATUS_UNIX = (severity ? severity : 1) << 8;
4949 /* Perl expects this to be a fatal error */
4950 if (severity != STS$K_SEVERE)
4959 STATUS_UNIX_SET(errno);
4961 exitstatus = STATUS_UNIX >> 8;
4962 if (exitstatus & 255)
4963 STATUS_UNIX_SET(exitstatus);
4965 STATUS_UNIX_SET(255);
4972 S_my_exit_jump(pTHX)
4977 SvREFCNT_dec(PL_e_script);
4981 POPSTACK_TO(PL_mainstack);
4989 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen)
4992 const char * const p = SvPVX_const(PL_e_script);
4993 const char *nl = strchr(p, '\n');
4995 PERL_UNUSED_ARG(idx);
4996 PERL_UNUSED_ARG(maxlen);
4998 nl = (nl) ? nl+1 : SvEND(PL_e_script);
5000 filter_del(read_e_script);
5003 sv_catpvn(buf_sv, p, nl-p);
5004 sv_chop(PL_e_script, nl);
5010 * c-indentation-style: bsd
5012 * indent-tabs-mode: nil
5015 * ex: set ts=8 sts=4 sw=4 et: