4 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
5 * 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
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 #ifdef PERL_IS_MINIPERL
28 # define USE_SITECUSTOMIZE
32 #define PERL_IN_PERL_C
34 #include "patchlevel.h" /* for local_patches */
41 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
48 char control[CMSG_SPACE(sizeof(int))];
65 #if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
66 char *getenv (char *); /* Usually in <stdlib.h> */
69 static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
71 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
72 /* Drop everything. Heck, don't even try to call it */
73 # define validate_suid(validarg, scriptname, fdscript, suidscript, linestr_sv, rsfp) NOOP
75 /* Drop almost everything */
76 # define validate_suid(validarg, scriptname, fdscript, suidscript, linestr_sv, rsfp) S_validate_suid(aTHX_ rsfp)
79 #define CALL_BODY_SUB(myop) \
80 if (PL_op == (myop)) \
81 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); \
85 #define CALL_LIST_BODY(cv) \
86 PUSHMARK(PL_stack_sp); \
87 call_sv(MUTABLE_SV((cv)), G_EVAL|G_DISCARD);
90 S_init_tls_and_interp(PerlInterpreter *my_perl)
94 PERL_SET_INTERP(my_perl);
95 #if defined(USE_ITHREADS)
98 PERL_SET_THX(my_perl);
101 MUTEX_INIT(&PL_dollarzero_mutex);
102 MUTEX_INIT(&PL_my_ctx_mutex);
105 #if defined(USE_ITHREADS)
108 /* This always happens for non-ithreads */
111 PERL_SET_THX(my_perl);
116 /* these implement the PERL_SYS_INIT, PERL_SYS_INIT3, PERL_SYS_TERM macros */
119 Perl_sys_init(int* argc, char*** argv)
123 PERL_ARGS_ASSERT_SYS_INIT;
125 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
126 PERL_UNUSED_ARG(argv);
127 PERL_SYS_INIT_BODY(argc, argv);
131 Perl_sys_init3(int* argc, char*** argv, char*** env)
135 PERL_ARGS_ASSERT_SYS_INIT3;
137 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
138 PERL_UNUSED_ARG(argv);
139 PERL_UNUSED_ARG(env);
140 PERL_SYS_INIT3_BODY(argc, argv, env);
147 if (!PL_veto_cleanup) {
148 PERL_SYS_TERM_BODY();
153 #ifdef PERL_IMPLICIT_SYS
155 perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
156 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
157 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
158 struct IPerlDir* ipD, struct IPerlSock* ipS,
159 struct IPerlProc* ipP)
161 PerlInterpreter *my_perl;
163 PERL_ARGS_ASSERT_PERL_ALLOC_USING;
165 /* Newx() needs interpreter, so call malloc() instead */
166 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
167 S_init_tls_and_interp(my_perl);
168 Zero(my_perl, 1, PerlInterpreter);
178 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
185 =head1 Embedding Functions
187 =for apidoc perl_alloc
189 Allocates a new Perl interpreter. See L<perlembed>.
197 PerlInterpreter *my_perl;
199 /* Newx() needs interpreter, so call malloc() instead */
200 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
202 S_init_tls_and_interp(my_perl);
203 #ifndef PERL_TRACK_MEMPOOL
204 return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter);
206 Zero(my_perl, 1, PerlInterpreter);
207 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
211 #endif /* PERL_IMPLICIT_SYS */
214 =for apidoc perl_construct
216 Initializes a new Perl interpreter. See L<perlembed>.
222 perl_construct(pTHXx)
226 PERL_ARGS_ASSERT_PERL_CONSTRUCT;
230 PL_perl_destruct_level = 1;
232 PERL_UNUSED_ARG(my_perl);
233 if (PL_perl_destruct_level > 0)
236 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
238 /* set read-only and try to insure than we wont see REFCNT==0
241 SvREADONLY_on(&PL_sv_undef);
242 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
244 sv_setpv(&PL_sv_no,PL_No);
245 /* value lookup in void context - happens to have the side effect
246 of caching the numeric forms. However, as &PL_sv_no doesn't contain
247 a string that is a valid numer, we have to turn the public flags by
253 SvREADONLY_on(&PL_sv_no);
254 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
256 sv_setpv(&PL_sv_yes,PL_Yes);
259 SvREADONLY_on(&PL_sv_yes);
260 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
262 SvREADONLY_on(&PL_sv_placeholder);
263 SvREFCNT(&PL_sv_placeholder) = (~(U32)0)/2;
265 PL_sighandlerp = (Sighandler_t) Perl_sighandler;
266 #ifdef PERL_USES_PL_PIDSTATUS
267 PL_pidstatus = newHV();
270 PL_rs = newSVpvs("\n");
280 SET_NUMERIC_STANDARD();
282 #if defined(LOCAL_PATCH_COUNT)
283 PL_localpatches = local_patches; /* For possible -v */
286 #ifdef HAVE_INTERP_INTERN
290 PerlIO_init(aTHX); /* Hook to IO system */
292 PL_fdpid = newAV(); /* for remembering popen pids by fd */
293 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
294 PL_errors = newSVpvs("");
295 sv_setpvs(PERL_DEBUG_PAD(0), ""); /* For regex debugging. */
296 sv_setpvs(PERL_DEBUG_PAD(1), ""); /* ext/re needs these */
297 sv_setpvs(PERL_DEBUG_PAD(2), ""); /* even without DEBUGGING. */
299 /* First entry is a list of empty elements. It needs to be initialised
300 else all hell breaks loose in S_find_uninit_var(). */
301 Perl_av_create_and_push(aTHX_ &PL_regex_padav, newSVpvs(""));
302 PL_regex_pad = AvARRAY(PL_regex_padav);
304 #ifdef USE_REENTRANT_API
305 Perl_reentrant_init(aTHX);
308 /* Note that strtab is a rather special HV. Assumptions are made
309 about not iterating on it, and not adding tie magic to it.
310 It is properly deallocated in perl_destruct() */
313 HvSHAREKEYS_off(PL_strtab); /* mandatory */
314 hv_ksplit(PL_strtab, 512);
316 #if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
317 _dyld_lookup_and_bind
318 ("__environ", (unsigned long *) &environ_pointer, NULL);
322 # ifdef USE_ENVIRON_ARRAY
323 PL_origenviron = environ;
327 /* Use sysconf(_SC_CLK_TCK) if available, if not
328 * available or if the sysconf() fails, use the HZ.
329 * BeOS has those, but returns the wrong value.
330 * The HZ if not originally defined has been by now
331 * been defined as CLK_TCK, if available. */
332 #if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK) && !defined(__BEOS__)
333 PL_clocktick = sysconf(_SC_CLK_TCK);
334 if (PL_clocktick <= 0)
338 PL_stashcache = newHV();
340 PL_patchlevel = newSVpvs("v" PERL_VERSION_STRING);
341 PL_apiversion = newSVpvs("v" PERL_API_VERSION_STRING);
344 if (!PL_mmap_page_size) {
345 #if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
347 SETERRNO(0, SS_NORMAL);
349 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
351 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
353 if ((long) PL_mmap_page_size < 0) {
355 SV * const error = ERRSV;
356 SvUPGRADE(error, SVt_PV);
357 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
360 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
364 # ifdef HAS_GETPAGESIZE
365 PL_mmap_page_size = getpagesize();
367 # if defined(I_SYS_PARAM) && defined(PAGESIZE)
368 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
372 if (PL_mmap_page_size <= 0)
373 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
374 (IV) PL_mmap_page_size);
376 #endif /* HAS_MMAP */
378 #if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
379 PL_timesbase.tms_utime = 0;
380 PL_timesbase.tms_stime = 0;
381 PL_timesbase.tms_cutime = 0;
382 PL_timesbase.tms_cstime = 0;
385 PL_osname = Perl_savepvn(aTHX_ STR_WITH_LEN(OSNAME));
387 PL_registered_mros = newHV();
388 /* Start with 1 bucket, for DFS. It's unlikely we'll need more. */
389 HvMAX(PL_registered_mros) = 0;
395 =for apidoc nothreadhook
397 Stub that provides thread hook for perl_destruct when there are
404 Perl_nothreadhook(pTHX)
410 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
412 Perl_dump_sv_child(pTHX_ SV *sv)
415 const int sock = PL_dumper_fd;
416 const int debug_fd = PerlIO_fileno(Perl_debug_log);
417 union control_un control;
420 struct cmsghdr *cmptr;
422 unsigned char buffer[256];
424 PERL_ARGS_ASSERT_DUMP_SV_CHILD;
426 if(sock == -1 || debug_fd == -1)
429 PerlIO_flush(Perl_debug_log);
431 /* All these shenanigans are to pass a file descriptor over to our child for
432 it to dump out to. We can't let it hold open the file descriptor when it
433 forks, as the file descriptor it will dump to can turn out to be one end
434 of pipe that some other process will wait on for EOF. (So as it would
435 be open, the wait would be forever.) */
437 msg.msg_control = control.control;
438 msg.msg_controllen = sizeof(control.control);
439 /* We're a connected socket so we don't need a destination */
445 cmptr = CMSG_FIRSTHDR(&msg);
446 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
447 cmptr->cmsg_level = SOL_SOCKET;
448 cmptr->cmsg_type = SCM_RIGHTS;
449 *((int *)CMSG_DATA(cmptr)) = 1;
451 vec[0].iov_base = (void*)&sv;
452 vec[0].iov_len = sizeof(sv);
453 got = sendmsg(sock, &msg, 0);
456 perror("Debug leaking scalars parent sendmsg failed");
459 if(got < sizeof(sv)) {
460 perror("Debug leaking scalars parent short sendmsg");
464 /* Return protocol is
466 unsigned char: length of location string (0 for empty)
467 unsigned char*: string (not terminated)
469 vec[0].iov_base = (void*)&returned_errno;
470 vec[0].iov_len = sizeof(returned_errno);
471 vec[1].iov_base = buffer;
474 got = readv(sock, vec, 2);
477 perror("Debug leaking scalars parent read failed");
478 PerlIO_flush(PerlIO_stderr());
481 if(got < sizeof(returned_errno) + 1) {
482 perror("Debug leaking scalars parent short read");
483 PerlIO_flush(PerlIO_stderr());
488 got = read(sock, buffer + 1, *buffer);
490 perror("Debug leaking scalars parent read 2 failed");
491 PerlIO_flush(PerlIO_stderr());
496 perror("Debug leaking scalars parent short read 2");
497 PerlIO_flush(PerlIO_stderr());
502 if (returned_errno || *buffer) {
503 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
504 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
505 returned_errno, strerror(returned_errno));
511 =for apidoc perl_destruct
513 Shuts down a Perl interpreter. See L<perlembed>.
522 VOL signed char destruct_level; /* see possible values in intrpvar.h */
524 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
528 PERL_ARGS_ASSERT_PERL_DESTRUCT;
530 PERL_UNUSED_ARG(my_perl);
533 assert(PL_scopestack_ix == 1);
535 /* wait for all pseudo-forked children to finish */
536 PERL_WAIT_FOR_CHILDREN;
538 destruct_level = PL_perl_destruct_level;
541 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
543 const int i = atoi(s);
544 if (destruct_level < i)
550 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
556 if (PL_endav && !PL_minus_c) {
557 PERL_SET_PHASE(PERL_PHASE_END);
558 call_list(PL_scopestack_ix, PL_endav);
564 assert(PL_scopestack_ix == 0);
566 /* Need to flush since END blocks can produce output */
569 if (PL_threadhook(aTHX)) {
570 /* Threads hook has vetoed further cleanup */
571 PL_veto_cleanup = TRUE;
575 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
576 if (destruct_level != 0) {
577 /* Fork here to create a child. Our child's job is to preserve the
578 state of scalars prior to destruction, so that we can instruct it
579 to dump any scalars that we later find have leaked.
580 There's no subtlety in this code - it assumes POSIX, and it doesn't
584 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
585 perror("Debug leaking scalars socketpair failed");
591 perror("Debug leaking scalars fork failed");
595 /* We are the child */
596 const int sock = fd[1];
597 const int debug_fd = PerlIO_fileno(Perl_debug_log);
600 /* Our success message is an integer 0, and a char 0 */
601 static const char success[sizeof(int) + 1] = {0};
605 /* We need to close all other file descriptors otherwise we end up
606 with interesting hangs, where the parent closes its end of a
607 pipe, and sits waiting for (another) child to terminate. Only
608 that child never terminates, because it never gets EOF, because
609 we also have the far end of the pipe open. We even need to
610 close the debugging fd, because sometimes it happens to be one
611 end of a pipe, and a process is waiting on the other end for
612 EOF. Normally it would be closed at some point earlier in
613 destruction, but if we happen to cause the pipe to remain open,
614 EOF never occurs, and we get an infinite hang. Hence all the
615 games to pass in a file descriptor if it's actually needed. */
617 f = sysconf(_SC_OPEN_MAX);
619 where = "sysconf failed";
630 union control_un control;
633 struct cmsghdr *cmptr;
637 msg.msg_control = control.control;
638 msg.msg_controllen = sizeof(control.control);
639 /* We're a connected socket so we don't need a source */
643 msg.msg_iovlen = sizeof(vec)/sizeof(vec[0]);
645 vec[0].iov_base = (void*)⌖
646 vec[0].iov_len = sizeof(target);
648 got = recvmsg(sock, &msg, 0);
653 where = "recv failed";
656 if(got < sizeof(target)) {
657 where = "short recv";
661 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
665 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
666 where = "wrong cmsg_len";
669 if(cmptr->cmsg_level != SOL_SOCKET) {
670 where = "wrong cmsg_level";
673 if(cmptr->cmsg_type != SCM_RIGHTS) {
674 where = "wrong cmsg_type";
678 got_fd = *(int*)CMSG_DATA(cmptr);
679 /* For our last little bit of trickery, put the file descriptor
680 back into Perl_debug_log, as if we never actually closed it
682 if(got_fd != debug_fd) {
683 if (dup2(got_fd, debug_fd) == -1) {
690 PerlIO_flush(Perl_debug_log);
692 got = write(sock, &success, sizeof(success));
695 where = "write failed";
698 if(got < sizeof(success)) {
699 where = "short write";
706 int send_errno = errno;
707 unsigned char length = (unsigned char) strlen(where);
708 struct iovec failure[3] = {
709 {(void*)&send_errno, sizeof(send_errno)},
711 {(void*)where, length}
713 int got = writev(sock, failure, 3);
714 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
715 in the parent if we try to read from the socketpair after the
716 child has exited, even if there was data to read.
717 So sleep a bit to give the parent a fighting chance of
720 _exit((got == -1) ? errno : 0);
724 PL_dumper_fd = fd[0];
729 /* We must account for everything. */
731 /* Destroy the main CV and syntax tree */
732 /* Do this now, because destroying ops can cause new SVs to be generated
733 in Perl_pad_swipe, and when running with -DDEBUG_LEAKING_SCALARS they
734 PL_curcop to point to a valid op from which the filename structure
736 PL_curcop = &PL_compiling;
738 /* ensure comppad/curpad to refer to main's pad */
739 if (CvPADLIST(PL_main_cv)) {
740 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
742 op_free(PL_main_root);
745 PL_main_start = NULL;
746 /* note that PL_main_cv isn't usually actually freed at this point,
747 * due to the CvOUTSIDE refs from subs compiled within it. It will
748 * get freed once all the subs are freed in sv_clean_all(), for
749 * destruct_level > 0 */
750 SvREFCNT_dec(PL_main_cv);
752 PERL_SET_PHASE(PERL_PHASE_DESTRUCT);
754 /* Tell PerlIO we are about to tear things apart in case
755 we have layers which are using resources that should
759 PerlIO_destruct(aTHX);
761 if (PL_sv_objcount) {
763 * Try to destruct global references. We do this first so that the
764 * destructors and destructees still exist. Some sv's might remain.
765 * Non-referenced objects are on their own.
771 /* unhook hooks which will soon be, or use, destroyed data */
772 SvREFCNT_dec(PL_warnhook);
774 SvREFCNT_dec(PL_diehook);
777 /* call exit list functions */
778 while (PL_exitlistlen-- > 0)
779 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
781 Safefree(PL_exitlist);
786 SvREFCNT_dec(PL_registered_mros);
788 /* jettison our possibly duplicated environment */
789 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
790 * so we certainly shouldn't free it here
793 #if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
794 if (environ != PL_origenviron && !PL_use_safe_putenv
796 /* only main thread can free environ[0] contents */
797 && PL_curinterp == aTHX
803 for (i = 0; environ[i]; i++)
804 safesysfree(environ[i]);
806 /* Must use safesysfree() when working with environ. */
807 safesysfree(environ);
809 environ = PL_origenviron;
812 #endif /* !PERL_MICRO */
814 if (destruct_level == 0) {
816 DEBUG_P(debprofdump());
818 #if defined(PERLIO_LAYERS)
819 /* No more IO - including error messages ! */
820 PerlIO_cleanup(aTHX);
823 CopFILE_free(&PL_compiling);
824 CopSTASH_free(&PL_compiling);
826 /* The exit() function will do everything that needs doing. */
831 /* the syntax tree is shared between clones
832 * so op_free(PL_main_root) only ReREFCNT_dec's
833 * REGEXPs in the parent interpreter
834 * we need to manually ReREFCNT_dec for the clones
836 SvREFCNT_dec(PL_regex_padav);
837 PL_regex_padav = NULL;
841 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
842 PL_stashcache = NULL;
844 /* loosen bonds of global variables */
846 /* XXX can PL_parser still be non-null here? */
847 if(PL_parser && PL_parser->rsfp) {
848 (void)PerlIO_close(PL_parser->rsfp);
849 PL_parser->rsfp = NULL;
853 Safefree(PL_splitstr);
863 PL_doswitches = FALSE;
864 PL_dowarn = G_WARN_OFF;
865 PL_sawampersand = FALSE; /* must save all match strings */
868 Safefree(PL_inplace);
870 SvREFCNT_dec(PL_patchlevel);
871 SvREFCNT_dec(PL_apiversion);
874 SvREFCNT_dec(PL_e_script);
880 /* magical thingies */
882 SvREFCNT_dec(PL_ofsgv); /* *, */
885 SvREFCNT_dec(PL_ors_sv); /* $\ */
888 SvREFCNT_dec(PL_rs); /* $/ */
891 Safefree(PL_osname); /* $^O */
894 SvREFCNT_dec(PL_statname);
898 /* defgv, aka *_ should be taken care of elsewhere */
901 Safefree(PL_efloatbuf);
905 /* startup and shutdown function lists */
906 SvREFCNT_dec(PL_beginav);
907 SvREFCNT_dec(PL_beginav_save);
908 SvREFCNT_dec(PL_endav);
909 SvREFCNT_dec(PL_checkav);
910 SvREFCNT_dec(PL_checkav_save);
911 SvREFCNT_dec(PL_unitcheckav);
912 SvREFCNT_dec(PL_unitcheckav_save);
913 SvREFCNT_dec(PL_initav);
915 PL_beginav_save = NULL;
918 PL_checkav_save = NULL;
919 PL_unitcheckav = NULL;
920 PL_unitcheckav_save = NULL;
923 /* shortcuts just get cleared */
932 PL_last_in_gv = NULL;
944 SvREFCNT_dec(PL_argvout_stack);
945 PL_argvout_stack = NULL;
947 SvREFCNT_dec(PL_modglobal);
949 SvREFCNT_dec(PL_preambleav);
950 PL_preambleav = NULL;
951 SvREFCNT_dec(PL_subname);
953 #ifdef PERL_USES_PL_PIDSTATUS
954 SvREFCNT_dec(PL_pidstatus);
957 SvREFCNT_dec(PL_toptarget);
959 SvREFCNT_dec(PL_bodytarget);
960 PL_bodytarget = NULL;
961 PL_formtarget = NULL;
963 /* free locale stuff */
964 #ifdef USE_LOCALE_COLLATE
965 Safefree(PL_collation_name);
966 PL_collation_name = NULL;
969 #ifdef USE_LOCALE_NUMERIC
970 Safefree(PL_numeric_name);
971 PL_numeric_name = NULL;
972 SvREFCNT_dec(PL_numeric_radix_sv);
973 PL_numeric_radix_sv = NULL;
976 /* clear utf8 character classes */
977 SvREFCNT_dec(PL_utf8_alnum);
978 SvREFCNT_dec(PL_utf8_ascii);
979 SvREFCNT_dec(PL_utf8_alpha);
980 SvREFCNT_dec(PL_utf8_space);
981 SvREFCNT_dec(PL_utf8_cntrl);
982 SvREFCNT_dec(PL_utf8_graph);
983 SvREFCNT_dec(PL_utf8_digit);
984 SvREFCNT_dec(PL_utf8_upper);
985 SvREFCNT_dec(PL_utf8_lower);
986 SvREFCNT_dec(PL_utf8_print);
987 SvREFCNT_dec(PL_utf8_punct);
988 SvREFCNT_dec(PL_utf8_xdigit);
989 SvREFCNT_dec(PL_utf8_mark);
990 SvREFCNT_dec(PL_utf8_toupper);
991 SvREFCNT_dec(PL_utf8_totitle);
992 SvREFCNT_dec(PL_utf8_tolower);
993 SvREFCNT_dec(PL_utf8_tofold);
994 SvREFCNT_dec(PL_utf8_idstart);
995 SvREFCNT_dec(PL_utf8_idcont);
996 SvREFCNT_dec(PL_utf8_foldclosures);
997 PL_utf8_alnum = NULL;
998 PL_utf8_ascii = NULL;
999 PL_utf8_alpha = NULL;
1000 PL_utf8_space = NULL;
1001 PL_utf8_cntrl = NULL;
1002 PL_utf8_graph = NULL;
1003 PL_utf8_digit = NULL;
1004 PL_utf8_upper = NULL;
1005 PL_utf8_lower = NULL;
1006 PL_utf8_print = NULL;
1007 PL_utf8_punct = NULL;
1008 PL_utf8_xdigit = NULL;
1009 PL_utf8_mark = NULL;
1010 PL_utf8_toupper = NULL;
1011 PL_utf8_totitle = NULL;
1012 PL_utf8_tolower = NULL;
1013 PL_utf8_tofold = NULL;
1014 PL_utf8_idstart = NULL;
1015 PL_utf8_idcont = NULL;
1016 PL_utf8_foldclosures = NULL;
1018 if (!specialWARN(PL_compiling.cop_warnings))
1019 PerlMemShared_free(PL_compiling.cop_warnings);
1020 PL_compiling.cop_warnings = NULL;
1021 cophh_free(CopHINTHASH_get(&PL_compiling));
1022 CopHINTHASH_set(&PL_compiling, cophh_new_empty());
1023 CopFILE_free(&PL_compiling);
1024 CopSTASH_free(&PL_compiling);
1026 /* Prepare to destruct main symbol table. */
1029 /* break ref loop *:: <=> %:: */
1030 (void)hv_delete(hv, "main::", 6, G_DISCARD);
1033 SvREFCNT_dec(PL_curstname);
1034 PL_curstname = NULL;
1036 /* clear queued errors */
1037 SvREFCNT_dec(PL_errors);
1040 SvREFCNT_dec(PL_isarev);
1043 if (destruct_level >= 2) {
1044 if (PL_scopestack_ix != 0)
1045 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1046 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1047 (long)PL_scopestack_ix);
1048 if (PL_savestack_ix != 0)
1049 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1050 "Unbalanced saves: %ld more saves than restores\n",
1051 (long)PL_savestack_ix);
1052 if (PL_tmps_floor != -1)
1053 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1054 (long)PL_tmps_floor + 1);
1055 if (cxstack_ix != -1)
1056 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1057 (long)cxstack_ix + 1);
1060 #ifdef PERL_IMPLICIT_CONTEXT
1061 /* the entries in this list are allocated via SV PVX's, so get freed
1062 * in sv_clean_all */
1063 Safefree(PL_my_cxt_list);
1066 /* Now absolutely destruct everything, somehow or other, loops or no. */
1068 /* the 2 is for PL_fdpid and PL_strtab */
1069 while (sv_clean_all() > 2)
1072 AvREAL_off(PL_fdpid); /* no surviving entries */
1073 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
1076 #ifdef HAVE_INTERP_INTERN
1080 /* Destruct the global string table. */
1082 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1083 * so that sv_free() won't fail on them.
1084 * Now that the global string table is using a single hunk of memory
1085 * for both HE and HEK, we either need to explicitly unshare it the
1086 * correct way, or actually free things here.
1089 const I32 max = HvMAX(PL_strtab);
1090 HE * const * const array = HvARRAY(PL_strtab);
1091 HE *hent = array[0];
1094 if (hent && ckWARN_d(WARN_INTERNAL)) {
1095 HE * const next = HeNEXT(hent);
1096 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
1097 "Unbalanced string table refcount: (%ld) for \"%s\"",
1098 (long)hent->he_valu.hent_refcount, HeKEY(hent));
1105 hent = array[riter];
1110 HvARRAY(PL_strtab) = 0;
1111 HvTOTALKEYS(PL_strtab) = 0;
1113 SvREFCNT_dec(PL_strtab);
1116 /* free the pointer tables used for cloning */
1117 ptr_table_free(PL_ptr_table);
1118 PL_ptr_table = (PTR_TBL_t*)NULL;
1121 /* free special SVs */
1123 SvREFCNT(&PL_sv_yes) = 0;
1124 sv_clear(&PL_sv_yes);
1125 SvANY(&PL_sv_yes) = NULL;
1126 SvFLAGS(&PL_sv_yes) = 0;
1128 SvREFCNT(&PL_sv_no) = 0;
1129 sv_clear(&PL_sv_no);
1130 SvANY(&PL_sv_no) = NULL;
1131 SvFLAGS(&PL_sv_no) = 0;
1135 for (i=0; i<=2; i++) {
1136 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1137 sv_clear(PERL_DEBUG_PAD(i));
1138 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1139 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1143 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
1144 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
1146 #ifdef DEBUG_LEAKING_SCALARS
1147 if (PL_sv_count != 0) {
1152 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
1153 svend = &sva[SvREFCNT(sva)];
1154 for (sv = sva + 1; sv < svend; ++sv) {
1155 if (SvTYPE(sv) != (svtype)SVTYPEMASK) {
1156 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
1158 " refcnt=%"UVuf pTHX__FORMAT "\n"
1159 "\tallocated at %s:%d %s %s (parent 0x%"UVxf");"
1161 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1163 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1165 sv->sv_debug_inpad ? "for" : "by",
1166 sv->sv_debug_optype ?
1167 PL_op_name[sv->sv_debug_optype]: "(none)",
1168 PTR2UV(sv->sv_debug_parent),
1171 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1172 Perl_dump_sv_child(aTHX_ sv);
1178 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1182 /* Wait for up to 4 seconds for child to terminate.
1183 This seems to be the least effort way of timing out on reaping
1185 struct timeval waitfor = {4, 0};
1186 int sock = PL_dumper_fd;
1190 FD_SET(sock, &rset);
1191 select(sock + 1, &rset, NULL, NULL, &waitfor);
1192 waitpid(child, &status, WNOHANG);
1197 #ifdef DEBUG_LEAKING_SCALARS_ABORT
1203 #ifdef PERL_DEBUG_READONLY_OPS
1209 #if defined(PERLIO_LAYERS)
1210 /* No more IO - including error messages ! */
1211 PerlIO_cleanup(aTHX);
1214 /* sv_undef needs to stay immortal until after PerlIO_cleanup
1215 as currently layers use it rather than NULL as a marker
1216 for no arg - and will try and SvREFCNT_dec it.
1218 SvREFCNT(&PL_sv_undef) = 0;
1219 SvREADONLY_off(&PL_sv_undef);
1221 Safefree(PL_origfilename);
1222 PL_origfilename = NULL;
1223 Safefree(PL_reg_start_tmp);
1224 PL_reg_start_tmp = (char**)NULL;
1225 PL_reg_start_tmpl = 0;
1226 Safefree(PL_reg_curpm);
1227 Safefree(PL_reg_poscache);
1228 free_tied_hv_pool();
1229 Safefree(PL_op_mask);
1230 Safefree(PL_psig_name);
1231 PL_psig_name = (SV**)NULL;
1232 PL_psig_ptr = (SV**)NULL;
1234 /* We need to NULL PL_psig_pend first, so that
1235 signal handlers know not to use it */
1236 int *psig_save = PL_psig_pend;
1237 PL_psig_pend = (int*)NULL;
1238 Safefree(psig_save);
1242 PL_tainting = FALSE;
1243 PL_taint_warn = FALSE;
1244 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
1247 DEBUG_P(debprofdump());
1249 #ifdef USE_REENTRANT_API
1250 Perl_reentrant_free(aTHX);
1255 while (PL_regmatch_slab) {
1256 regmatch_slab *s = PL_regmatch_slab;
1257 PL_regmatch_slab = PL_regmatch_slab->next;
1261 /* As the absolutely last thing, free the non-arena SV for mess() */
1264 /* we know that type == SVt_PVMG */
1266 /* it could have accumulated taint magic */
1269 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1270 moremagic = mg->mg_moremagic;
1271 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1273 Safefree(mg->mg_ptr);
1277 /* we know that type >= SVt_PV */
1278 SvPV_free(PL_mess_sv);
1279 Safefree(SvANY(PL_mess_sv));
1280 Safefree(PL_mess_sv);
1287 =for apidoc perl_free
1289 Releases a Perl interpreter. See L<perlembed>.
1299 PERL_ARGS_ASSERT_PERL_FREE;
1301 if (PL_veto_cleanup)
1304 #ifdef PERL_TRACK_MEMPOOL
1307 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1308 * value as we're probably hunting memory leaks then
1310 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
1311 if (!s || atoi(s) == 0) {
1312 const U32 old_debug = PL_debug;
1313 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1314 thread at thread exit. */
1316 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1317 "free this thread's memory\n");
1318 PL_debug &= ~ DEBUG_m_FLAG;
1320 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
1321 safesysfree(sTHX + (char *)(aTHXx->Imemory_debug_header.next));
1322 PL_debug = old_debug;
1327 #if defined(WIN32) || defined(NETWARE)
1328 # if defined(PERL_IMPLICIT_SYS)
1331 void *host = nw_internal_host;
1333 void *host = w32_internal_host;
1335 PerlMem_free(aTHXx);
1337 nw_delete_internal_host(host);
1339 win32_delete_internal_host(host);
1343 PerlMem_free(aTHXx);
1346 PerlMem_free(aTHXx);
1350 #if defined(USE_ITHREADS)
1351 /* provide destructors to clean up the thread key when libperl is unloaded */
1352 #ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1354 #if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
1355 #pragma fini "perl_fini"
1356 #elif defined(__sun) && !defined(__GNUC__)
1357 #pragma fini (perl_fini)
1361 #if defined(__GNUC__)
1362 __attribute__((destructor))
1367 if (PL_curinterp && !PL_veto_cleanup)
1372 #endif /* THREADS */
1375 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
1378 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1379 PL_exitlist[PL_exitlistlen].fn = fn;
1380 PL_exitlist[PL_exitlistlen].ptr = ptr;
1385 S_set_caret_X(pTHX) {
1387 GV* tmpgv = gv_fetchpvs("\030", GV_ADD|GV_NOTQUAL, SVt_PV); /* $^X */
1389 SV *const caret_x = GvSV(tmpgv);
1391 sv_setpv(caret_x, os2_execname(aTHX));
1393 # ifdef HAS_PROCSELFEXE
1394 char buf[MAXPATHLEN];
1395 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1397 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1398 includes a spurious NUL which will cause $^X to fail in system
1399 or backticks (this will prevent extensions from being built and
1400 many tests from working). readlink is not meant to add a NUL.
1401 Normal readlink works fine.
1403 if (len > 0 && buf[len-1] == '\0') {
1407 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1408 returning the text "unknown" from the readlink rather than the path
1409 to the executable (or returning an error from the readlink). Any
1410 valid path has a '/' in it somewhere, so use that to validate the
1411 result. See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1413 if (len > 0 && memchr(buf, '/', len)) {
1414 sv_setpvn(caret_x, buf, len);
1418 /* Fallback to this: */
1419 sv_setpv(caret_x, PL_origargv[0]);
1425 =for apidoc perl_parse
1427 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1433 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
1440 PERL_ARGS_ASSERT_PERL_PARSE;
1441 #ifndef MULTIPLICITY
1442 PERL_UNUSED_ARG(my_perl);
1445 #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
1446 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
1447 * This MUST be done before any hash stores or fetches take place.
1448 * If you set PL_rehash_seed (and presumably also PL_rehash_seed_set)
1449 * yourself, it is your responsibility to provide a good random seed!
1450 * You can also define PERL_HASH_SEED in compile time, see hv.h. */
1451 if (!PL_rehash_seed_set)
1452 PL_rehash_seed = get_hash_seed();
1454 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
1456 if (s && (atoi(s) == 1))
1457 PerlIO_printf(Perl_debug_log, "HASH_SEED = %"UVuf"\n", PL_rehash_seed);
1459 #endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1464 if (PL_origalen != 0) {
1465 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1468 /* Set PL_origalen be the sum of the contiguous argv[]
1469 * elements plus the size of the env in case that it is
1470 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
1471 * as the maximum modifiable length of $0. In the worst case
1472 * the area we are able to modify is limited to the size of
1473 * the original argv[0]. (See below for 'contiguous', though.)
1475 const char *s = NULL;
1478 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
1479 /* Do the mask check only if the args seem like aligned. */
1481 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1483 /* See if all the arguments are contiguous in memory. Note
1484 * that 'contiguous' is a loose term because some platforms
1485 * align the argv[] and the envp[]. If the arguments look
1486 * like non-aligned, assume that they are 'strictly' or
1487 * 'traditionally' contiguous. If the arguments look like
1488 * aligned, we just check that they are within aligned
1489 * PTRSIZE bytes. As long as no system has something bizarre
1490 * like the argv[] interleaved with some other data, we are
1491 * fine. (Did I just evoke Murphy's Law?) --jhi */
1492 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1494 for (i = 1; i < PL_origargc; i++) {
1495 if ((PL_origargv[i] == s + 1
1497 || PL_origargv[i] == s + 2
1502 (PL_origargv[i] > s &&
1504 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1515 #ifndef PERL_USE_SAFE_PUTENV
1516 /* Can we grab env area too to be used as the area for $0? */
1517 if (s && PL_origenviron && !PL_use_safe_putenv) {
1518 if ((PL_origenviron[0] == s + 1)
1521 (PL_origenviron[0] > s &&
1522 PL_origenviron[0] <=
1523 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1526 #ifndef OS2 /* ENVIRON is read by the kernel too. */
1527 s = PL_origenviron[0];
1530 my_setenv("NoNe SuCh", NULL);
1531 /* Force copy of environment. */
1532 for (i = 1; PL_origenviron[i]; i++) {
1533 if (PL_origenviron[i] == s + 1
1536 (PL_origenviron[i] > s &&
1537 PL_origenviron[i] <=
1538 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1541 s = PL_origenviron[i];
1549 #endif /* !defined(PERL_USE_SAFE_PUTENV) */
1551 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
1556 /* Come here if running an undumped a.out. */
1558 PL_origfilename = savepv(argv[0]);
1559 PL_do_undump = FALSE;
1560 cxstack_ix = -1; /* start label stack again */
1562 assert (!PL_tainted);
1564 S_set_caret_X(aTHX);
1566 init_postdump_symbols(argc,argv,env);
1571 op_free(PL_main_root);
1572 PL_main_root = NULL;
1574 PL_main_start = NULL;
1575 SvREFCNT_dec(PL_main_cv);
1579 oldscope = PL_scopestack_ix;
1580 PL_dowarn = G_WARN_OFF;
1585 parse_body(env,xsinit);
1586 if (PL_unitcheckav) {
1587 call_list(oldscope, PL_unitcheckav);
1590 PERL_SET_PHASE(PERL_PHASE_CHECK);
1591 call_list(oldscope, PL_checkav);
1599 /* my_exit() was called */
1600 while (PL_scopestack_ix > oldscope)
1603 PL_curstash = PL_defstash;
1604 if (PL_unitcheckav) {
1605 call_list(oldscope, PL_unitcheckav);
1608 PERL_SET_PHASE(PERL_PHASE_CHECK);
1609 call_list(oldscope, PL_checkav);
1614 PerlIO_printf(Perl_error_log, "panic: top_env\n");
1622 /* This needs to stay in perl.c, as perl.c is compiled with different flags for
1623 miniperl, and we need to see those flags reflected in the values here. */
1625 /* What this returns is subject to change. Use the public interface in Config.
1628 S_Internals_V(pTHX_ CV *cv)
1631 #ifdef LOCAL_PATCH_COUNT
1632 const int local_patch_count = LOCAL_PATCH_COUNT;
1634 const int local_patch_count = 0;
1636 const int entries = 3 + local_patch_count;
1638 static char non_bincompat_options[] =
1642 # ifdef HOMEGROWN_POSIX_SIGNALS
1643 " HOMEGROWN_POSIX_SIGNALS"
1648 # ifdef PERL_DISABLE_PMC
1651 # ifdef PERL_DONT_CREATE_GVSV
1652 " PERL_DONT_CREATE_GVSV"
1654 # ifdef PERL_EXTERNAL_GLOB
1655 " PERL_EXTERNAL_GLOB"
1657 # ifdef PERL_IS_MINIPERL
1660 # ifdef PERL_MALLOC_WRAP
1663 # ifdef PERL_MEM_LOG
1666 # ifdef PERL_MEM_LOG_NOIMPL
1667 " PERL_MEM_LOG_NOIMPL"
1669 # ifdef PERL_PRESERVE_IVUV
1670 " PERL_PRESERVE_IVUV"
1672 # ifdef PERL_USE_DEVEL
1675 # ifdef PERL_USE_SAFE_PUTENV
1676 " PERL_USE_SAFE_PUTENV"
1678 # ifdef UNLINK_ALL_VERSIONS
1679 " UNLINK_ALL_VERSIONS"
1681 # ifdef USE_ATTRIBUTES_FOR_PERLIO
1682 " USE_ATTRIBUTES_FOR_PERLIO"
1684 # ifdef USE_FAST_STDIO
1690 # ifdef USE_LOCALE_CTYPE
1693 # ifdef USE_PERL_ATOF
1696 # ifdef USE_SITECUSTOMIZE
1697 " USE_SITECUSTOMIZE"
1700 PERL_UNUSED_ARG(cv);
1701 PERL_UNUSED_ARG(items);
1703 EXTEND(SP, entries);
1705 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1706 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1707 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1711 PUSHs(Perl_newSVpvn_flags(aTHX_
1712 STR_WITH_LEN("Compiled at " __DATE__ " " __TIME__),
1715 PUSHs(Perl_newSVpvn_flags(aTHX_ STR_WITH_LEN("Compiled on " __DATE__),
1719 PUSHs(&PL_sv_undef);
1722 for (i = 1; i <= local_patch_count; i++) {
1723 /* This will be an undef, if PL_localpatches[i] is NULL. */
1724 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1730 #define INCPUSH_UNSHIFT 0x01
1731 #define INCPUSH_ADD_OLD_VERS 0x02
1732 #define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1733 #define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1734 #define INCPUSH_NOT_BASEDIR 0x10
1735 #define INCPUSH_CAN_RELOCATE 0x20
1736 #define INCPUSH_ADD_SUB_DIRS \
1737 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
1740 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
1744 int argc = PL_origargc;
1745 char **argv = PL_origargv;
1746 const char *scriptname = NULL;
1747 VOL bool dosearch = FALSE;
1749 bool doextract = FALSE;
1750 const char *cddir = NULL;
1751 #ifdef USE_SITECUSTOMIZE
1752 bool minus_f = FALSE;
1754 SV *linestr_sv = newSV_type(SVt_PVIV);
1755 bool add_read_e_script = FALSE;
1757 PERL_SET_PHASE(PERL_PHASE_START);
1759 SvGROW(linestr_sv, 80);
1760 sv_setpvs(linestr_sv,"");
1766 for (argc--,argv++; argc > 0; argc--,argv++) {
1767 if (argv[0][0] != '-' || !argv[0][1])
1773 #ifndef PERL_STRICT_CR
1797 if ((s = moreswitches(s)))
1802 CHECK_MALLOC_TOO_LATE_FOR('t');
1803 if( !PL_tainting ) {
1804 PL_taint_warn = TRUE;
1810 CHECK_MALLOC_TOO_LATE_FOR('T');
1812 PL_taint_warn = FALSE;
1820 forbid_setid('e', FALSE);
1822 PL_e_script = newSVpvs("");
1823 add_read_e_script = TRUE;
1826 sv_catpv(PL_e_script, s);
1828 sv_catpv(PL_e_script, argv[1]);
1832 Perl_croak(aTHX_ "No code specified for -%c", c);
1833 sv_catpvs(PL_e_script, "\n");
1837 #ifdef USE_SITECUSTOMIZE
1843 case 'I': /* -I handled both here and in moreswitches() */
1844 forbid_setid('I', FALSE);
1845 if (!*++s && (s=argv[1]) != NULL) {
1849 STRLEN len = strlen(s);
1850 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
1853 Perl_croak(aTHX_ "No directory specified for -I");
1856 forbid_setid('S', FALSE);
1865 opts_prog = newSVpvs("use Config; Config::_V()");
1869 opts_prog = Perl_newSVpvf(aTHX_
1870 "use Config; Config::config_vars(qw%c%s%c)",
1874 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
1875 /* don't look for script or read stdin */
1876 scriptname = BIT_BUCKET;
1888 if (!*++s || isSPACE(*s)) {
1892 /* catch use of gnu style long options */
1893 if (strEQ(s, "version")) {
1897 if (strEQ(s, "help")) {
1904 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1915 #ifndef SECURE_INTERNAL_GETENV
1918 (s = PerlEnv_getenv("PERL5OPT")))
1922 if (*s == '-' && *(s+1) == 'T') {
1923 CHECK_MALLOC_TOO_LATE_FOR('T');
1925 PL_taint_warn = FALSE;
1928 char *popt_copy = NULL;
1941 if (!strchr("CDIMUdmtwW", *s))
1942 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
1946 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
1947 s = popt_copy + (s - d);
1955 if( !PL_tainting ) {
1956 PL_taint_warn = TRUE;
1967 #if defined(USE_SITECUSTOMIZE)
1969 /* The games with local $! are to avoid setting errno if there is no
1970 sitecustomize script. */
1971 # ifdef PERL_IS_MINIPERL
1972 AV *const inc = GvAV(PL_incgv);
1973 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
1976 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
1978 "BEGIN { do {local $!; -f '%"SVf"/buildcustomize.pl'} && do '%"SVf"/buildcustomize.pl' }", *inc0, *inc0));
1981 /* SITELIB_EXP is a function call on Win32. */
1982 const char *const sitelib = SITELIB_EXP;
1983 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
1985 "BEGIN { do {local $!; -f '%s/sitecustomize.pl'} && do '%s/sitecustomize.pl' }", sitelib, sitelib));
1991 scriptname = argv[0];
1994 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1996 else if (scriptname == NULL) {
1998 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
2004 /* Set $^X early so that it can be used for relocatable paths in @INC */
2005 assert (!PL_tainted);
2007 S_set_caret_X(aTHX);
2012 bool suidscript = FALSE;
2014 open_script(scriptname, dosearch, &suidscript, &rsfp);
2016 validate_suid(validarg, scriptname, fdscript, suidscript,
2020 # if defined(SIGCHLD) || defined(SIGCLD)
2023 # define SIGCHLD SIGCLD
2025 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2026 if (sigstate == (Sighandler_t) SIG_IGN) {
2027 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2028 "Can't ignore signal CHLD, forcing to default");
2029 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2037 /* This will croak if suidscript is true, as -x cannot be used with
2039 forbid_setid('x', suidscript);
2040 /* Hence you can't get here if suidscript is true */
2042 find_beginning(linestr_sv, rsfp);
2043 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2044 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2048 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
2049 CvUNIQUE_on(PL_compcv);
2051 CvPADLIST(PL_compcv) = pad_new(0);
2053 PL_isarev = newHV();
2056 boot_core_UNIVERSAL();
2058 newXS("Internals::V", S_Internals_V, __FILE__);
2061 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
2063 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC) || defined(SYMBIAN)
2069 # ifdef HAS_SOCKS5_INIT
2070 socks5_init(argv[0]);
2076 init_predump_symbols();
2077 /* init_postdump_symbols not currently designed to be called */
2078 /* more than once (ENV isn't cleared first, for example) */
2079 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
2081 init_postdump_symbols(argc,argv,env);
2083 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2084 * or explicitly in some platforms.
2085 * locale.c:Perl_init_i18nl10n() if the environment
2086 * look like the user wants to use UTF-8. */
2087 #if defined(__SYMBIAN32__)
2088 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2090 # ifndef PERL_IS_MINIPERL
2092 /* Requires init_predump_symbols(). */
2093 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
2098 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
2099 * and the default open disciplines. */
2100 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2101 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2103 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2104 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2105 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2107 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2108 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2109 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2111 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2112 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
2113 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2115 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2116 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2119 sv_setpvs(sv, ":utf8\0:utf8");
2121 sv_setpvs(sv, ":utf8\0");
2124 sv_setpvs(sv, "\0:utf8");
2133 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2134 if (strEQ(s, "unsafe"))
2135 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2136 else if (strEQ(s, "safe"))
2137 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2139 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2146 if ((s = PerlEnv_getenv("PERL_XMLDUMP"))) {
2150 PL_xmlfp = PerlIO_stdout();
2152 PL_xmlfp = PerlIO_open(s, "w");
2154 Perl_croak(aTHX_ "Can't open %s", s);
2156 my_setenv("PERL_XMLDUMP", NULL); /* hide from subprocs */
2162 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2163 PL_madskills = atoi(s);
2164 my_setenv("PERL_MADSKILLS", NULL); /* hide from subprocs */
2169 lex_start(linestr_sv, rsfp, 0);
2170 PL_subname = newSVpvs("main");
2172 if (add_read_e_script)
2173 filter_add(read_e_script, NULL);
2175 /* now parse the script */
2177 SETERRNO(0,SS_NORMAL);
2178 if (yyparse(GRAMPROG) || PL_parser->error_count) {
2180 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
2182 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
2186 CopLINE_set(PL_curcop, 0);
2187 PL_curstash = PL_defstash;
2189 SvREFCNT_dec(PL_e_script);
2197 SAVECOPFILE(PL_curcop);
2198 SAVECOPLINE(PL_curcop);
2199 gv_check(PL_defstash);
2208 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2209 dump_mstats("after compilation:");
2214 PL_restartjmpenv = NULL;
2220 =for apidoc perl_run
2222 Tells a Perl interpreter to run. See L<perlembed>.
2235 PERL_ARGS_ASSERT_PERL_RUN;
2236 #ifndef MULTIPLICITY
2237 PERL_UNUSED_ARG(my_perl);
2240 oldscope = PL_scopestack_ix;
2248 cxstack_ix = -1; /* start context stack again */
2250 case 0: /* normal completion */
2254 case 2: /* my_exit() */
2255 while (PL_scopestack_ix > oldscope)
2258 PL_curstash = PL_defstash;
2259 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
2260 PL_endav && !PL_minus_c) {
2261 PERL_SET_PHASE(PERL_PHASE_END);
2262 call_list(oldscope, PL_endav);
2265 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2266 dump_mstats("after execution: ");
2272 POPSTACK_TO(PL_mainstack);
2275 PerlIO_printf(Perl_error_log, "panic: restartop\n");
2286 S_run_body(pTHX_ I32 oldscope)
2289 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
2290 PL_sawampersand ? "Enabling" : "Omitting"));
2292 if (!PL_restartop) {
2296 exit(0); /* less likely to core dump than my_exit(0) */
2300 if (DEBUG_x_TEST || DEBUG_B_TEST)
2301 dump_all_perl(!DEBUG_B_TEST);
2303 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
2307 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
2310 if (PERLDB_SINGLE && PL_DBsingle)
2311 sv_setiv(PL_DBsingle, 1);
2313 PERL_SET_PHASE(PERL_PHASE_INIT);
2314 call_list(oldscope, PL_initav);
2316 #ifdef PERL_DEBUG_READONLY_OPS
2317 Perl_pending_Slabs_to_ro(aTHX);
2323 PERL_SET_PHASE(PERL_PHASE_RUN);
2326 PL_restartjmpenv = NULL;
2327 PL_op = PL_restartop;
2331 else if (PL_main_start) {
2332 CvDEPTH(PL_main_cv) = 1;
2333 PL_op = PL_main_start;
2341 =head1 SV Manipulation Functions
2343 =for apidoc p||get_sv
2345 Returns the SV of the specified Perl scalar. C<flags> are passed to
2346 C<gv_fetchpv>. If C<GV_ADD> is set and the
2347 Perl variable does not exist then it will be created. If C<flags> is zero
2348 and the variable does not exist then NULL is returned.
2354 Perl_get_sv(pTHX_ const char *name, I32 flags)
2358 PERL_ARGS_ASSERT_GET_SV;
2360 gv = gv_fetchpv(name, flags, SVt_PV);
2367 =head1 Array Manipulation Functions
2369 =for apidoc p||get_av
2371 Returns the AV of the specified Perl global or package array with the given
2372 name (so it won't work on lexical variables). C<flags> are passed
2373 to C<gv_fetchpv>. If C<GV_ADD> is set and the
2374 Perl variable does not exist then it will be created. If C<flags> is zero
2375 and the variable does not exist then NULL is returned.
2377 Perl equivalent: C<@{"$name"}>.
2383 Perl_get_av(pTHX_ const char *name, I32 flags)
2385 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
2387 PERL_ARGS_ASSERT_GET_AV;
2397 =head1 Hash Manipulation Functions
2399 =for apidoc p||get_hv
2401 Returns the HV of the specified Perl hash. C<flags> are passed to
2402 C<gv_fetchpv>. If C<GV_ADD> is set and the
2403 Perl variable does not exist then it will be created. If C<flags> is zero
2404 and the variable does not exist then NULL is returned.
2410 Perl_get_hv(pTHX_ const char *name, I32 flags)
2412 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
2414 PERL_ARGS_ASSERT_GET_HV;
2424 =head1 CV Manipulation Functions
2426 =for apidoc p||get_cvn_flags
2428 Returns the CV of the specified Perl subroutine. C<flags> are passed to
2429 C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2430 exist then it will be declared (which has the same effect as saying
2431 C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2432 then NULL is returned.
2434 =for apidoc p||get_cv
2436 Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
2442 Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
2444 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
2445 /* XXX this is probably not what they think they're getting.
2446 * It has the same effect as "sub name;", i.e. just a forward
2449 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2451 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
2452 SV *const sv = newSVpvn_flags(name, len, flags & SVf_UTF8);
2453 return newSUB(start_subparse(FALSE, 0),
2454 newSVOP(OP_CONST, 0, sv),
2462 /* Nothing in core calls this now, but we can't replace it with a macro and
2463 move it to mathoms.c as a macro would evaluate name twice. */
2465 Perl_get_cv(pTHX_ const char *name, I32 flags)
2467 PERL_ARGS_ASSERT_GET_CV;
2469 return get_cvn_flags(name, strlen(name), flags);
2472 /* Be sure to refetch the stack pointer after calling these routines. */
2476 =head1 Callback Functions
2478 =for apidoc p||call_argv
2480 Performs a callback to the specified named and package-scoped Perl subroutine
2481 with C<argv> (a NULL-terminated array of strings) as arguments. See L<perlcall>.
2483 Approximate Perl equivalent: C<&{"$sub_name"}(@$argv)>.
2489 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
2491 /* See G_* flags in cop.h */
2492 /* null terminated arg list */
2497 PERL_ARGS_ASSERT_CALL_ARGV;
2502 mXPUSHs(newSVpv(*argv,0));
2507 return call_pv(sub_name, flags);
2511 =for apidoc p||call_pv
2513 Performs a callback to the specified Perl sub. See L<perlcall>.
2519 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
2520 /* name of the subroutine */
2521 /* See G_* flags in cop.h */
2523 PERL_ARGS_ASSERT_CALL_PV;
2525 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
2529 =for apidoc p||call_method
2531 Performs a callback to the specified Perl method. The blessed object must
2532 be on the stack. See L<perlcall>.
2538 Perl_call_method(pTHX_ const char *methname, I32 flags)
2539 /* name of the subroutine */
2540 /* See G_* flags in cop.h */
2543 PERL_ARGS_ASSERT_CALL_METHOD;
2545 len = strlen(methname);
2547 /* XXX: sv_2mortal(newSVpvn_share(methname, len)) can be faster */
2548 return call_sv(newSVpvn_flags(methname, len, SVs_TEMP), flags | G_METHOD);
2551 /* May be called with any of a CV, a GV, or an SV containing the name. */
2553 =for apidoc p||call_sv
2555 Performs a callback to the Perl sub whose name is in the SV. See
2562 Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
2563 /* See G_* flags in cop.h */
2566 LOGOP myop; /* fake syntax tree node */
2571 bool oldcatch = CATCH_GET;
2573 OP* const oldop = PL_op;
2576 PERL_ARGS_ASSERT_CALL_SV;
2578 if (flags & G_DISCARD) {
2582 if (!(flags & G_WANT)) {
2583 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2588 Zero(&myop, 1, LOGOP);
2589 myop.op_next = NULL;
2590 if (!(flags & G_NOARGS))
2591 myop.op_flags |= OPf_STACKED;
2592 myop.op_flags |= OP_GIMME_REVERSE(flags);
2596 EXTEND(PL_stack_sp, 1);
2597 *++PL_stack_sp = sv;
2599 oldscope = PL_scopestack_ix;
2601 if (PERLDB_SUB && PL_curstash != PL_debstash
2602 /* Handle first BEGIN of -d. */
2603 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
2604 /* Try harder, since this may have been a sighandler, thus
2605 * curstash may be meaningless. */
2606 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
2607 && !(flags & G_NODEBUG))
2608 PL_op->op_private |= OPpENTERSUB_DB;
2610 if (flags & G_METHOD) {
2611 Zero(&method_op, 1, UNOP);
2612 method_op.op_next = PL_op;
2613 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2614 method_op.op_type = OP_METHOD;
2615 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
2616 myop.op_type = OP_ENTERSUB;
2617 PL_op = (OP*)&method_op;
2620 if (!(flags & G_EVAL)) {
2622 CALL_BODY_SUB((OP*)&myop);
2623 retval = PL_stack_sp - (PL_stack_base + oldmark);
2624 CATCH_SET(oldcatch);
2627 myop.op_other = (OP*)&myop;
2629 create_eval_scope(flags|G_FAKINGEVAL);
2637 CALL_BODY_SUB((OP*)&myop);
2638 retval = PL_stack_sp - (PL_stack_base + oldmark);
2639 if (!(flags & G_KEEPERR)) {
2647 /* my_exit() was called */
2648 PL_curstash = PL_defstash;
2655 PL_restartjmpenv = NULL;
2656 PL_op = PL_restartop;
2660 PL_stack_sp = PL_stack_base + oldmark;
2661 if ((flags & G_WANT) == G_ARRAY)
2665 *++PL_stack_sp = &PL_sv_undef;
2670 if (PL_scopestack_ix > oldscope)
2671 delete_eval_scope();
2675 if (flags & G_DISCARD) {
2676 PL_stack_sp = PL_stack_base + oldmark;
2685 /* Eval a string. The G_EVAL flag is always assumed. */
2688 =for apidoc p||eval_sv
2690 Tells Perl to C<eval> the string in the SV. It supports the same flags
2691 as C<call_sv>, with the obvious exception of G_EVAL. See L<perlcall>.
2697 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
2699 /* See G_* flags in cop.h */
2703 UNOP myop; /* fake syntax tree node */
2704 VOL I32 oldmark = SP - PL_stack_base;
2707 OP* const oldop = PL_op;
2710 PERL_ARGS_ASSERT_EVAL_SV;
2712 if (flags & G_DISCARD) {
2719 Zero(PL_op, 1, UNOP);
2720 EXTEND(PL_stack_sp, 1);
2721 *++PL_stack_sp = sv;
2723 if (!(flags & G_NOARGS))
2724 myop.op_flags = OPf_STACKED;
2725 myop.op_next = NULL;
2726 myop.op_type = OP_ENTEREVAL;
2727 myop.op_flags |= OP_GIMME_REVERSE(flags);
2728 if (flags & G_KEEPERR)
2729 myop.op_flags |= OPf_SPECIAL;
2731 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2732 * before a PUSHEVAL, which corrupts the stack after a croak */
2733 TAINT_PROPER("eval_sv()");
2739 if (PL_op == (OP*)(&myop)) {
2740 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2742 goto fail; /* failed in compilation */
2745 retval = PL_stack_sp - (PL_stack_base + oldmark);
2746 if (!(flags & G_KEEPERR)) {
2754 /* my_exit() was called */
2755 PL_curstash = PL_defstash;
2762 PL_restartjmpenv = NULL;
2763 PL_op = PL_restartop;
2768 PL_stack_sp = PL_stack_base + oldmark;
2769 if ((flags & G_WANT) == G_ARRAY)
2773 *++PL_stack_sp = &PL_sv_undef;
2779 if (flags & G_DISCARD) {
2780 PL_stack_sp = PL_stack_base + oldmark;
2790 =for apidoc p||eval_pv
2792 Tells Perl to C<eval> the given string and return an SV* result.
2798 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
2802 SV* sv = newSVpv(p, 0);
2804 PERL_ARGS_ASSERT_EVAL_PV;
2806 eval_sv(sv, G_SCALAR);
2813 if (croak_on_error && SvTRUE(ERRSV)) {
2814 Perl_croak(aTHX_ "%s", SvPVx_nolen_const(ERRSV));
2820 /* Require a module. */
2823 =head1 Embedding Functions
2825 =for apidoc p||require_pv
2827 Tells Perl to C<require> the file named by the string argument. It is
2828 analogous to the Perl code C<eval "require '$file'">. It's even
2829 implemented that way; consider using load_module instead.
2834 Perl_require_pv(pTHX_ const char *pv)
2840 PERL_ARGS_ASSERT_REQUIRE_PV;
2842 PUSHSTACKi(PERLSI_REQUIRE);
2844 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2845 eval_sv(sv_2mortal(sv), G_DISCARD);
2851 S_usage(pTHX_ const char *name) /* XXX move this out into a module ? */
2853 /* This message really ought to be max 23 lines.
2854 * Removed -h because the user already knows that option. Others? */
2856 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
2857 minimum of 509 character string literals. */
2858 static const char * const usage_msg[] = {
2859 " -0[octal] specify record separator (\\0, if no argument)\n"
2860 " -a autosplit mode with -n or -p (splits $_ into @F)\n"
2861 " -C[number/list] enables the listed Unicode features\n"
2862 " -c check syntax only (runs BEGIN and CHECK blocks)\n"
2863 " -d[:debugger] run program under debugger\n"
2864 " -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
2865 " -e program one line of program (several -e's allowed, omit programfile)\n"
2866 " -E program like -e, but enables all optional features\n"
2867 " -f don't do $sitelib/sitecustomize.pl at startup\n"
2868 " -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
2869 " -i[extension] edit <> files in place (makes backup if extension supplied)\n"
2870 " -Idirectory specify @INC/#include directory (several -I's allowed)\n",
2871 " -l[octal] enable line ending processing, specifies line terminator\n"
2872 " -[mM][-]module execute \"use/no module...\" before executing program\n"
2873 " -n assume \"while (<>) { ... }\" loop around program\n"
2874 " -p assume loop like -n but print line also, like sed\n"
2875 " -s enable rudimentary parsing for switches after programfile\n"
2876 " -S look for programfile using PATH environment variable\n",
2877 " -t enable tainting warnings\n"
2878 " -T enable tainting checks\n"
2879 " -u dump core after parsing program\n"
2880 " -U allow unsafe operations\n"
2881 " -v print version, patchlevel and license\n"
2882 " -V[:variable] print configuration summary (or a single Config.pm variable)\n",
2883 " -w enable many useful warnings\n"
2884 " -W enable all warnings\n"
2885 " -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
2886 " -X disable all warnings\n"
2888 "Run 'perldoc perl' for more help with Perl.\n\n",
2891 const char * const *p = usage_msg;
2892 PerlIO *out = PerlIO_stdout();
2894 PERL_ARGS_ASSERT_USAGE;
2897 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
2900 PerlIO_puts(out, *p++);
2903 /* convert a string of -D options (or digits) into an int.
2904 * sets *s to point to the char after the options */
2908 Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
2910 static const char * const usage_msgd[] = {
2911 " Debugging flag values: (see also -d)\n"
2912 " p Tokenizing and parsing (with v, displays parse stack)\n"
2913 " s Stack snapshots (with v, displays all stacks)\n"
2914 " l Context (loop) stack processing\n"
2915 " t Trace execution\n"
2916 " o Method and overloading resolution\n",
2917 " c String/numeric conversions\n"
2918 " P Print profiling info, source file input state\n"
2919 " m Memory and SV allocation\n"
2920 " f Format processing\n"
2921 " r Regular expression parsing and execution\n"
2922 " x Syntax tree dump\n",
2923 " u Tainting checks\n"
2924 " H Hash dump -- usurps values()\n"
2925 " X Scratchpad allocation\n"
2928 " R Include reference counts of dumped variables (eg when using -Ds)\n",
2929 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
2930 " v Verbose: use in conjunction with other flags\n"
2931 " C Copy On Write\n"
2932 " A Consistency checks on internal structures\n"
2933 " q quiet - currently only suppresses the 'EXECUTING' message\n"
2934 " M trace smart match resolution\n"
2935 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
2940 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
2943 /* if adding extra options, remember to update DEBUG_MASK */
2944 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMB";
2946 for (; isALNUM(**s); (*s)++) {
2947 const char * const d = strchr(debopts,**s);
2949 i |= 1 << (d - debopts);
2950 else if (ckWARN_d(WARN_DEBUGGING))
2951 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2952 "invalid option -D%c, use -D'' to see choices\n", **s);
2955 else if (isDIGIT(**s)) {
2957 for (; isALNUM(**s); (*s)++) ;
2959 else if (givehelp) {
2960 const char *const *p = usage_msgd;
2961 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
2964 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
2965 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2966 "-Dp not implemented on this platform\n");
2972 /* This routine handles any switches that can be given during run */
2975 Perl_moreswitches(pTHX_ const char *s)
2979 const char option = *s; /* used to remember option in -m/-M code */
2981 PERL_ARGS_ASSERT_MORESWITCHES;
2989 SvREFCNT_dec(PL_rs);
2990 if (s[1] == 'x' && s[2]) {
2991 const char *e = s+=2;
2997 flags = PERL_SCAN_SILENT_ILLDIGIT;
2998 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
2999 if (s + numlen < e) {
3000 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3004 PL_rs = newSVpvs("");
3005 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
3006 tmps = (U8*)SvPVX(PL_rs);
3007 uvchr_to_utf8(tmps, rschar);
3008 SvCUR_set(PL_rs, UNISKIP(rschar));
3013 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3014 if (rschar & ~((U8)~0))
3015 PL_rs = &PL_sv_undef;
3016 else if (!rschar && numlen >= 2)
3017 PL_rs = newSVpvs("");
3019 char ch = (char)rschar;
3020 PL_rs = newSVpvn(&ch, 1);
3023 sv_setsv(get_sv("/", GV_ADD), PL_rs);
3028 PL_unicode = parse_unicode_opts( (const char **)&s );
3029 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3035 while (*s && !isSPACE(*s)) ++s;
3036 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
3047 forbid_setid('d', FALSE);
3050 /* -dt indicates to the debugger that threads will be used */
3051 if (*s == 't' && !isALNUM(s[1])) {
3053 my_setenv("PERL5DB_THREADED", "1");
3056 /* The following permits -d:Mod to accepts arguments following an =
3057 in the fashion that -MSome::Mod does. */
3058 if (*s == ':' || *s == '=') {
3065 sv = newSVpvs("no Devel::");
3067 sv = newSVpvs("use Devel::");
3071 end = s + strlen(s);
3073 /* We now allow -d:Module=Foo,Bar and -d:-Module */
3074 while(isALNUM(*s) || *s==':') ++s;
3076 sv_catpvn(sv, start, end - start);
3078 sv_catpvn(sv, start, s-start);
3079 /* Don't use NUL as q// delimiter here, this string goes in the
3081 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
3084 my_setenv("PERL5DB", SvPV_nolen_const(sv));
3088 PL_perldb = PERLDB_ALL;
3095 forbid_setid('D', FALSE);
3097 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
3098 #else /* !DEBUGGING */
3099 if (ckWARN_d(WARN_DEBUGGING))
3100 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3101 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
3102 for (s++; isALNUM(*s); s++) ;
3107 usage(PL_origargv[0]);
3110 Safefree(PL_inplace);
3111 #if defined(__CYGWIN__) /* do backup extension automagically */
3112 if (*(s+1) == '\0') {
3113 PL_inplace = savepvs(".bak");
3116 #endif /* __CYGWIN__ */
3118 const char * const start = ++s;
3119 while (*s && !isSPACE(*s))
3122 PL_inplace = savepvn(start, s - start);
3126 if (*s == '-') /* Additional switches on #! line. */
3130 case 'I': /* -I handled both here and in parse_body() */
3131 forbid_setid('I', FALSE);
3133 while (*s && isSPACE(*s))
3138 /* ignore trailing spaces (possibly followed by other switches) */
3140 for (e = p; *e && !isSPACE(*e); e++) ;
3144 } while (*p && *p != '-');
3146 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
3152 Perl_croak(aTHX_ "No directory specified for -I");
3158 SvREFCNT_dec(PL_ors_sv);
3164 PL_ors_sv = newSVpvs("\n");
3165 numlen = 3 + (*s == '0');
3166 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
3170 if (RsPARA(PL_rs)) {
3171 PL_ors_sv = newSVpvs("\n\n");
3174 PL_ors_sv = newSVsv(PL_rs);
3179 forbid_setid('M', FALSE); /* XXX ? */
3182 forbid_setid('m', FALSE); /* XXX ? */
3187 const char *use = "use ";
3189 /* -M-foo == 'no foo' */
3190 /* Leading space on " no " is deliberate, to make both
3191 possibilities the same length. */
3192 if (*s == '-') { use = " no "; ++s; }
3193 sv = newSVpvn(use,4);
3195 /* We allow -M'Module qw(Foo Bar)' */
3196 while(isALNUM(*s) || *s==':') {
3205 Perl_croak(aTHX_ "Module name required with -%c option",
3208 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3209 "contains single ':'",
3210 (int)(s - start), start, option);
3211 end = s + strlen(s);
3213 sv_catpvn(sv, start, end - start);
3214 if (option == 'm') {
3216 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
3217 sv_catpvs( sv, " ()");
3220 sv_catpvn(sv, start, s-start);
3221 /* Use NUL as q''-delimiter. */
3222 sv_catpvs(sv, " split(/,/,q\0");
3224 sv_catpvn(sv, s, end - s);
3225 sv_catpvs(sv, "\0)");
3228 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
3231 Perl_croak(aTHX_ "Missing argument to -%c", option);
3242 forbid_setid('s', FALSE);
3243 PL_doswitches = TRUE;
3257 PL_do_undump = TRUE;
3265 if (!sv_derived_from(PL_patchlevel, "version"))
3266 upg_version(PL_patchlevel, TRUE);
3269 SV* level= vstringify(PL_patchlevel);
3270 #ifdef PERL_PATCHNUM
3271 # ifdef PERL_GIT_UNCOMMITTED_CHANGES
3272 SV *num = newSVpvs(PERL_PATCHNUM "*");
3274 SV *num = newSVpvs(PERL_PATCHNUM);
3277 if (sv_len(num)>=sv_len(level) && strnEQ(SvPV_nolen(num),SvPV_nolen(level),sv_len(level))) {
3278 SvREFCNT_dec(level);
3281 Perl_sv_catpvf(aTHX_ level, " (%"SVf")", num);
3285 PerlIO_printf(PerlIO_stdout(),
3286 "\nThis is perl " STRINGIFY(PERL_REVISION)
3287 ", version " STRINGIFY(PERL_VERSION)
3288 ", subversion " STRINGIFY(PERL_SUBVERSION)
3289 " (%"SVf") built for " ARCHNAME, level
3291 SvREFCNT_dec(level);
3294 /* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3295 PerlIO_printf(PerlIO_stdout(),
3296 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
3297 SVfARG(vstringify(PL_patchlevel))));
3298 PerlIO_printf(PerlIO_stdout(),
3299 Perl_form(aTHX_ " built under %s at %s %s\n",
3300 OSNAME, __DATE__, __TIME__));
3301 PerlIO_printf(PerlIO_stdout(),
3302 Perl_form(aTHX_ " OS Specific Release: %s\n",
3305 #if defined(LOCAL_PATCH_COUNT)
3306 if (LOCAL_PATCH_COUNT > 0)
3307 PerlIO_printf(PerlIO_stdout(),
3308 "\n(with %d registered patch%s, "
3309 "see perl -V for more detail)",
3311 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
3314 PerlIO_printf(PerlIO_stdout(),
3315 "\n\nCopyright 1987-2011, Larry Wall\n");
3317 PerlIO_printf(PerlIO_stdout(),
3318 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
3321 PerlIO_printf(PerlIO_stdout(),
3322 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3323 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
3326 PerlIO_printf(PerlIO_stdout(),
3327 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
3328 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
3331 PerlIO_printf(PerlIO_stdout(),
3332 "atariST series port, ++jrb bammi@cadence.com\n");
3335 PerlIO_printf(PerlIO_stdout(),
3336 "BeOS port Copyright Tom Spindler, 1997-1999\n");
3339 PerlIO_printf(PerlIO_stdout(),
3340 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n");
3343 PerlIO_printf(PerlIO_stdout(),
3344 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
3347 PerlIO_printf(PerlIO_stdout(),
3348 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
3351 PerlIO_printf(PerlIO_stdout(),
3352 "VM/ESA port by Neale Ferguson, 1998-1999\n");
3355 PerlIO_printf(PerlIO_stdout(),
3356 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
3359 PerlIO_printf(PerlIO_stdout(),
3360 "EPOC port by Olaf Flebbe, 1999-2002\n");
3363 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
3364 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
3367 #ifdef __SYMBIAN32__
3368 PerlIO_printf(PerlIO_stdout(),
3369 "Symbian port by Nokia, 2004-2005\n");
3371 #ifdef BINARY_BUILD_NOTICE
3372 BINARY_BUILD_NOTICE;
3374 PerlIO_printf(PerlIO_stdout(),
3376 Perl may be copied only under the terms of either the Artistic License or the\n\
3377 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
3378 Complete documentation for Perl, including FAQ lists, should be found on\n\
3379 this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
3380 Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
3383 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
3384 PL_dowarn |= G_WARN_ON;
3389 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
3390 if (!specialWARN(PL_compiling.cop_warnings))
3391 PerlMemShared_free(PL_compiling.cop_warnings);
3392 PL_compiling.cop_warnings = pWARN_ALL ;
3396 PL_dowarn = G_WARN_ALL_OFF;
3397 if (!specialWARN(PL_compiling.cop_warnings))
3398 PerlMemShared_free(PL_compiling.cop_warnings);
3399 PL_compiling.cop_warnings = pWARN_NONE ;
3406 if (s[0] == '-') /* Additional switches on #! line. */
3411 #if defined(WIN32) || !defined(PERL_STRICT_CR)
3417 #ifdef ALTERNATE_SHEBANG
3418 case 'S': /* OS/2 needs -S on "extproc" line. */
3422 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
3427 /* compliments of Tom Christiansen */
3429 /* unexec() can be found in the Gnu emacs distribution */
3430 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
3433 Perl_my_unexec(pTHX)
3435 PERL_UNUSED_CONTEXT;
3437 SV * prog = newSVpv(BIN_EXP, 0);
3438 SV * file = newSVpv(PL_origfilename, 0);
3442 sv_catpvs(prog, "/perl");
3443 sv_catpvs(file, ".perldump");
3445 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3446 /* unexec prints msg to stderr in case of failure */
3447 PerlProc_exit(status);
3450 # include <lib$routines.h>
3451 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
3452 # elif defined(WIN32) || defined(__CYGWIN__)
3453 Perl_croak(aTHX_ "dump is not supported");
3455 ABORT(); /* for use with undump */
3460 /* initialize curinterp */
3466 # define PERLVAR(prefix,var,type)
3467 # define PERLVARA(prefix,var,n,type)
3468 # if defined(PERL_IMPLICIT_CONTEXT)
3469 # define PERLVARI(prefix,var,type,init) aTHX->prefix##var = init;
3470 # define PERLVARIC(prefix,var,type,init) aTHX->prefix##var = init;
3472 # define PERLVARI(prefix,var,type,init) PERL_GET_INTERP->var = init;
3473 # define PERLVARIC(prefix,var,type,init) PERL_GET_INTERP->var = init;
3475 # include "intrpvar.h"
3481 # define PERLVAR(prefix,var,type)
3482 # define PERLVARA(prefix,var,n,type)
3483 # define PERLVARI(prefix,var,type,init) PL_##var = init;
3484 # define PERLVARIC(prefix,var,type,init) PL_##var = init;
3485 # include "intrpvar.h"
3492 /* As these are inside a structure, PERLVARI isn't capable of initialising
3494 PL_reg_oldcurpm = PL_reg_curpm = NULL;
3495 PL_reg_poscache = PL_reg_starttry = NULL;
3499 S_init_main_stash(pTHX)
3504 PL_curstash = PL_defstash = newHV();
3505 /* We know that the string "main" will be in the global shared string
3506 table, so it's a small saving to use it rather than allocate another
3508 PL_curstname = newSVpvs_share("main");
3509 gv = gv_fetchpvs("main::", GV_ADD|GV_NOTQUAL, SVt_PVHV);
3510 /* If we hadn't caused another reference to "main" to be in the shared
3511 string table above, then it would be worth reordering these two,
3512 because otherwise all we do is delete "main" from it as a consequence
3513 of the SvREFCNT_dec, only to add it again with hv_name_set */
3514 SvREFCNT_dec(GvHV(gv));
3515 hv_name_set(PL_defstash, "main", 4, 0);
3516 GvHV(gv) = MUTABLE_HV(SvREFCNT_inc_simple(PL_defstash));
3518 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpvs("INC", GV_ADD|GV_NOTQUAL,
3520 SvREFCNT_inc_simple_void(PL_incgv); /* Don't allow it to be freed */
3521 GvMULTI_on(PL_incgv);
3522 PL_hintgv = gv_fetchpvs("\010", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^H */
3523 GvMULTI_on(PL_hintgv);
3524 PL_defgv = gv_fetchpvs("_", GV_ADD|GV_NOTQUAL, SVt_PVAV);
3525 SvREFCNT_inc_simple_void(PL_defgv);
3526 PL_errgv = gv_HVadd(gv_fetchpvs("@", GV_ADD|GV_NOTQUAL, SVt_PV));
3527 SvREFCNT_inc_simple_void(PL_errgv);
3528 GvMULTI_on(PL_errgv);
3529 PL_replgv = gv_fetchpvs("\022", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^R */
3530 GvMULTI_on(PL_replgv);
3531 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
3532 #ifdef PERL_DONT_CREATE_GVSV
3535 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
3537 PL_curstash = PL_defstash;
3538 CopSTASH_set(&PL_compiling, PL_defstash);
3539 PL_debstash = GvHV(gv_fetchpvs("DB::", GV_ADDMULTI, SVt_PVHV));
3540 PL_globalstash = GvHV(gv_fetchpvs("CORE::GLOBAL::", GV_ADDMULTI,
3542 /* We must init $/ before switches are processed. */
3543 sv_setpvs(get_sv("/", GV_ADD), "\n");
3547 S_open_script(pTHX_ const char *scriptname, bool dosearch,
3548 bool *suidscript, PerlIO **rsfpp)
3553 PERL_ARGS_ASSERT_OPEN_SCRIPT;
3556 PL_origfilename = savepvs("-e");
3559 /* if find_script() returns, it returns a malloc()-ed value */
3560 scriptname = PL_origfilename = find_script(scriptname, dosearch, NULL, 1);
3562 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
3563 const char *s = scriptname + 8;
3569 * Tell apart "normal" usage of fdscript, e.g.
3570 * with bash on FreeBSD:
3571 * perl <( echo '#!perl -DA'; echo 'print "$0\n"')
3572 * from usage in suidperl.
3573 * Does any "normal" usage leave garbage after the number???
3574 * Is it a mistake to use a similar /dev/fd/ construct for
3579 * Be supersafe and do some sanity-checks.
3580 * Still, can we be sure we got the right thing?
3583 Perl_croak(aTHX_ "Wrong syntax (suid) fd script name \"%s\"\n", s);
3586 Perl_croak(aTHX_ "Missing (suid) fd script name\n");
3588 scriptname = savepv(s + 1);
3589 Safefree(PL_origfilename);
3590 PL_origfilename = (char *)scriptname;
3595 CopFILE_free(PL_curcop);
3596 CopFILE_set(PL_curcop, PL_origfilename);
3597 if (*PL_origfilename == '-' && PL_origfilename[1] == '\0')
3598 scriptname = (char *)"";
3599 if (fdscript >= 0) {
3600 *rsfpp = PerlIO_fdopen(fdscript,PERL_SCRIPT_MODE);
3601 # if defined(HAS_FCNTL) && defined(F_SETFD)
3603 /* ensure close-on-exec */
3604 fcntl(PerlIO_fileno(*rsfpp),F_SETFD,1);
3607 else if (!*scriptname) {
3608 forbid_setid(0, *suidscript);
3609 *rsfpp = PerlIO_stdin();
3612 #ifdef FAKE_BIT_BUCKET
3613 /* This hack allows one not to have /dev/null (or BIT_BUCKET as it
3614 * is called) and still have the "-e" work. (Believe it or not,
3615 * a /dev/null is required for the "-e" to work because source
3616 * filter magic is used to implement it. ) This is *not* a general
3617 * replacement for a /dev/null. What we do here is create a temp
3618 * file (an empty file), open up that as the script, and then
3619 * immediately close and unlink it. Close enough for jazz. */
3620 #define FAKE_BIT_BUCKET_PREFIX "/tmp/perlnull-"
3621 #define FAKE_BIT_BUCKET_SUFFIX "XXXXXXXX"
3622 #define FAKE_BIT_BUCKET_TEMPLATE FAKE_BIT_BUCKET_PREFIX FAKE_BIT_BUCKET_SUFFIX
3623 char tmpname[sizeof(FAKE_BIT_BUCKET_TEMPLATE)] = {
3624 FAKE_BIT_BUCKET_TEMPLATE
3626 const char * const err = "Failed to create a fake bit bucket";
3627 if (strEQ(scriptname, BIT_BUCKET)) {
3628 #ifdef HAS_MKSTEMP /* Hopefully mkstemp() is safe here. */
3629 int tmpfd = mkstemp(tmpname);
3631 scriptname = tmpname;
3634 Perl_croak(aTHX_ err);
3637 scriptname = mktemp(tmpname);
3639 Perl_croak(aTHX_ err);
3644 *rsfpp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
3645 #ifdef FAKE_BIT_BUCKET
3646 if (memEQ(scriptname, FAKE_BIT_BUCKET_PREFIX,
3647 sizeof(FAKE_BIT_BUCKET_PREFIX) - 1)
3648 && strlen(scriptname) == sizeof(tmpname) - 1) {
3651 scriptname = BIT_BUCKET;
3653 # if defined(HAS_FCNTL) && defined(F_SETFD)
3655 /* ensure close-on-exec */
3656 fcntl(PerlIO_fileno(*rsfpp),F_SETFD,1);
3660 /* PSz 16 Sep 03 Keep neat error message */
3662 Perl_croak(aTHX_ "Can't open "BIT_BUCKET": %s\n", Strerror(errno));
3664 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3665 CopFILE(PL_curcop), Strerror(errno));
3671 * I_SYSSTATVFS HAS_FSTATVFS
3673 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
3674 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
3675 * here so that metaconfig picks them up. */
3678 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
3679 /* Don't even need this function. */
3682 S_validate_suid(pTHX_ PerlIO *rsfp)
3684 PERL_ARGS_ASSERT_VALIDATE_SUID;
3686 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
3689 PerlLIO_fstat(PerlIO_fileno(rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3690 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3692 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3695 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3696 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3697 /* not set-id, must be wrapped */
3700 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3703 S_find_beginning(pTHX_ SV* linestr_sv, PerlIO *rsfp)
3707 register const char *s2;
3709 PERL_ARGS_ASSERT_FIND_BEGINNING;
3711 /* skip forward in input to the real script? */
3714 if ((s = sv_gets(linestr_sv, rsfp, 0)) == NULL)
3715 Perl_croak(aTHX_ "No Perl script found in input\n");
3717 } while (!(*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))));
3718 PerlIO_ungetc(rsfp, '\n'); /* to keep line count right */
3719 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3721 while (*s == ' ' || *s == '\t') s++;
3723 while (isDIGIT(s2[-1]) || s2[-1] == '-' || s2[-1] == '.'
3724 || s2[-1] == '_') s2--;
3725 if (strnEQ(s2-4,"perl",4))
3726 while ((s = moreswitches(s)))
3736 PL_uid = PerlProc_getuid();
3737 PL_euid = PerlProc_geteuid();
3738 PL_gid = PerlProc_getgid();
3739 PL_egid = PerlProc_getegid();
3741 PL_uid |= PL_gid << 16;
3742 PL_euid |= PL_egid << 16;
3744 /* Should not happen: */
3745 CHECK_MALLOC_TAINT(PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3746 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3749 * Should go by suidscript, not uid!=euid: why disallow
3750 * system("ls") in scripts run from setuid things?
3751 * Or, is this run before we check arguments and set suidscript?
3752 * What about SETUID_SCRIPTS_ARE_SECURE_NOW: could we use fdscript then?
3753 * (We never have suidscript, can we be sure to have fdscript?)
3754 * Or must then go by UID checks? See comments in forbid_setid also.
3758 /* This is used very early in the lifetime of the program,
3759 * before even the options are parsed, so PL_tainting has
3760 * not been initialized properly. */
3762 Perl_doing_taint(int argc, char *argv[], char *envp[])
3764 #ifndef PERL_IMPLICIT_SYS
3765 /* If we have PERL_IMPLICIT_SYS we can't call getuid() et alia
3766 * before we have an interpreter-- and the whole point of this
3767 * function is to be called at such an early stage. If you are on
3768 * a system with PERL_IMPLICIT_SYS but you do have a concept of
3769 * "tainted because running with altered effective ids', you'll
3770 * have to add your own checks somewhere in here. The two most
3771 * known samples of 'implicitness' are Win32 and NetWare, neither
3772 * of which has much of concept of 'uids'. */
3773 int uid = PerlProc_getuid();
3774 int euid = PerlProc_geteuid();
3775 int gid = PerlProc_getgid();
3776 int egid = PerlProc_getegid();
3783 if (uid && (euid != uid || egid != gid))
3785 #endif /* !PERL_IMPLICIT_SYS */
3786 /* This is a really primitive check; environment gets ignored only
3787 * if -T are the first chars together; otherwise one gets
3788 * "Too late" message. */
3789 if ( argc > 1 && argv[1][0] == '-'
3790 && (argv[1][1] == 't' || argv[1][1] == 'T') )
3795 /* Passing the flag as a single char rather than a string is a slight space
3796 optimisation. The only message that isn't /^-.$/ is
3797 "program input from stdin", which is substituted in place of '\0', which
3798 could never be a command line flag. */
3800 S_forbid_setid(pTHX_ const char flag, const bool suidscript) /* g */
3803 char string[3] = "-x";
3804 const char *message = "program input from stdin";
3811 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
3812 if (PL_euid != PL_uid)
3813 Perl_croak(aTHX_ "No %s allowed while running setuid", message);
3814 if (PL_egid != PL_gid)
3815 Perl_croak(aTHX_ "No %s allowed while running setgid", message);
3816 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3818 Perl_croak(aTHX_ "No %s allowed with (suid) fdscript", message);
3822 Perl_init_dbargs(pTHX)
3824 AV *const args = PL_dbargs = GvAV(gv_AVadd((gv_fetchpvs("DB::args",
3829 /* Someone has already created it.
3830 It might have entries, and if we just turn off AvREAL(), they will
3831 "leak" until global destruction. */
3834 AvREIFY_only(PL_dbargs);
3838 Perl_init_debugger(pTHX)
3841 HV * const ostash = PL_curstash;
3843 PL_curstash = PL_debstash;
3845 Perl_init_dbargs(aTHX);
3846 PL_DBgv = gv_fetchpvs("DB::DB", GV_ADDMULTI, SVt_PVGV);
3847 PL_DBline = gv_fetchpvs("DB::dbline", GV_ADDMULTI, SVt_PVAV);
3848 PL_DBsub = gv_HVadd(gv_fetchpvs("DB::sub", GV_ADDMULTI, SVt_PVHV));
3849 PL_DBsingle = GvSV((gv_fetchpvs("DB::single", GV_ADDMULTI, SVt_PV)));
3850 if (!SvIOK(PL_DBsingle))
3851 sv_setiv(PL_DBsingle, 0);
3852 PL_DBtrace = GvSV((gv_fetchpvs("DB::trace", GV_ADDMULTI, SVt_PV)));
3853 if (!SvIOK(PL_DBtrace))
3854 sv_setiv(PL_DBtrace, 0);
3855 PL_DBsignal = GvSV((gv_fetchpvs("DB::signal", GV_ADDMULTI, SVt_PV)));
3856 if (!SvIOK(PL_DBsignal))
3857 sv_setiv(PL_DBsignal, 0);
3858 PL_curstash = ostash;
3861 #ifndef STRESS_REALLOC
3862 #define REASONABLE(size) (size)
3864 #define REASONABLE(size) (1) /* unreasonable */
3868 Perl_init_stacks(pTHX)
3871 /* start with 128-item stack and 8K cxstack */
3872 PL_curstackinfo = new_stackinfo(REASONABLE(128),
3873 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3874 PL_curstackinfo->si_type = PERLSI_MAIN;
3875 PL_curstack = PL_curstackinfo->si_stack;
3876 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
3878 PL_stack_base = AvARRAY(PL_curstack);
3879 PL_stack_sp = PL_stack_base;
3880 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
3882 Newx(PL_tmps_stack,REASONABLE(128),SV*);
3885 PL_tmps_max = REASONABLE(128);
3887 Newx(PL_markstack,REASONABLE(32),I32);
3888 PL_markstack_ptr = PL_markstack;
3889 PL_markstack_max = PL_markstack + REASONABLE(32);
3893 Newx(PL_scopestack,REASONABLE(32),I32);
3895 Newx(PL_scopestack_name,REASONABLE(32),const char*);
3897 PL_scopestack_ix = 0;
3898 PL_scopestack_max = REASONABLE(32);
3900 Newx(PL_savestack,REASONABLE(128),ANY);
3901 PL_savestack_ix = 0;
3902 PL_savestack_max = REASONABLE(128);
3911 while (PL_curstackinfo->si_next)
3912 PL_curstackinfo = PL_curstackinfo->si_next;
3913 while (PL_curstackinfo) {
3914 PERL_SI *p = PL_curstackinfo->si_prev;
3915 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3916 Safefree(PL_curstackinfo->si_cxstack);
3917 Safefree(PL_curstackinfo);
3918 PL_curstackinfo = p;
3920 Safefree(PL_tmps_stack);
3921 Safefree(PL_markstack);
3922 Safefree(PL_scopestack);
3924 Safefree(PL_scopestack_name);
3926 Safefree(PL_savestack);
3930 Perl_populate_isa(pTHX_ const char *name, STRLEN len, ...)
3932 GV *const gv = gv_fetchpvn(name, len, GV_ADD | GV_ADDMULTI, SVt_PVAV);
3933 AV *const isa = GvAVn(gv);
3936 PERL_ARGS_ASSERT_POPULATE_ISA;
3938 if(AvFILLp(isa) != -1)
3941 /* NOTE: No support for tied ISA */
3943 va_start(args, len);
3945 const char *const parent = va_arg(args, const char*);
3950 parent_len = va_arg(args, size_t);
3952 /* Arguments are supplied with a trailing :: */
3953 assert(parent_len > 2);
3954 assert(parent[parent_len - 1] == ':');
3955 assert(parent[parent_len - 2] == ':');
3956 av_push(isa, newSVpvn(parent, parent_len - 2));
3957 (void) gv_fetchpvn(parent, parent_len, GV_ADD, SVt_PVGV);
3964 S_init_predump_symbols(pTHX)
3970 sv_setpvs(get_sv("\"", GV_ADD), " ");
3971 PL_ofsgv = (GV*)SvREFCNT_inc(gv_fetchpvs(",", GV_ADD|GV_NOTQUAL, SVt_PV));
3974 /* Historically, PVIOs were blessed into IO::Handle, unless
3975 FileHandle was loaded, in which case they were blessed into
3976 that. Action at a distance.
3977 However, if we simply bless into IO::Handle, we break code
3978 that assumes that PVIOs will have (among others) a seek
3979 method. IO::File inherits from IO::Handle and IO::Seekable,
3980 and provides the needed methods. But if we simply bless into
3981 it, then we break code that assumed that by loading
3982 IO::Handle, *it* would work.
3983 So a compromise is to set up the correct @IO::File::ISA,
3984 so that code that does C<use IO::Handle>; will still work.
3987 Perl_populate_isa(aTHX_ STR_WITH_LEN("IO::File::ISA"),
3988 STR_WITH_LEN("IO::Handle::"),
3989 STR_WITH_LEN("IO::Seekable::"),
3990 STR_WITH_LEN("Exporter::"),
3993 PL_stdingv = gv_fetchpvs("STDIN", GV_ADD|GV_NOTQUAL, SVt_PVIO);
3994 GvMULTI_on(PL_stdingv);
3995 io = GvIOp(PL_stdingv);
3996 IoTYPE(io) = IoTYPE_RDONLY;
3997 IoIFP(io) = PerlIO_stdin();
3998 tmpgv = gv_fetchpvs("stdin", GV_ADD|GV_NOTQUAL, SVt_PV);
4000 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4002 tmpgv = gv_fetchpvs("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4005 IoTYPE(io) = IoTYPE_WRONLY;
4006 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
4008 tmpgv = gv_fetchpvs("stdout", GV_ADD|GV_NOTQUAL, SVt_PV);
4010 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4012 PL_stderrgv = gv_fetchpvs("STDERR", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4013 GvMULTI_on(PL_stderrgv);
4014 io = GvIOp(PL_stderrgv);
4015 IoTYPE(io) = IoTYPE_WRONLY;
4016 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
4017 tmpgv = gv_fetchpvs("stderr", GV_ADD|GV_NOTQUAL, SVt_PV);
4019 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4021 PL_statname = newSV(0); /* last filename we did stat on */
4025 Perl_init_argv_symbols(pTHX_ register int argc, register char **argv)
4029 PERL_ARGS_ASSERT_INIT_ARGV_SYMBOLS;
4031 argc--,argv++; /* skip name of script */
4032 if (PL_doswitches) {
4033 for (; argc > 0 && **argv == '-'; argc--,argv++) {
4037 if (argv[0][1] == '-' && !argv[0][2]) {
4041 if ((s = strchr(argv[0], '='))) {
4042 const char *const start_name = argv[0] + 1;
4043 sv_setpv(GvSV(gv_fetchpvn_flags(start_name, s - start_name,
4044 TRUE, SVt_PV)), s + 1);
4047 sv_setiv(GvSV(gv_fetchpv(argv[0]+1, GV_ADD, SVt_PV)),1);
4050 if ((PL_argvgv = gv_fetchpvs("ARGV", GV_ADD|GV_NOTQUAL, SVt_PVAV))) {
4051 GvMULTI_on(PL_argvgv);
4052 (void)gv_AVadd(PL_argvgv);
4053 av_clear(GvAVn(PL_argvgv));
4054 for (; argc > 0; argc--,argv++) {
4055 SV * const sv = newSVpv(argv[0],0);
4056 av_push(GvAVn(PL_argvgv),sv);
4057 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
4058 if (PL_unicode & PERL_UNICODE_ARGV_FLAG)
4061 if (PL_unicode & PERL_UNICODE_WIDESYSCALLS_FLAG) /* Sarathy? */
4062 (void)sv_utf8_decode(sv);
4068 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
4073 PERL_ARGS_ASSERT_INIT_POSTDUMP_SYMBOLS;
4075 PL_toptarget = newSV_type(SVt_PVFM);
4076 sv_setpvs(PL_toptarget, "");
4077 PL_bodytarget = newSV_type(SVt_PVFM);
4078 sv_setpvs(PL_bodytarget, "");
4079 PL_formtarget = PL_bodytarget;
4083 init_argv_symbols(argc,argv);
4085 if ((tmpgv = gv_fetchpvs("0", GV_ADD|GV_NOTQUAL, SVt_PV))) {
4086 sv_setpv(GvSV(tmpgv),PL_origfilename);
4088 if ((PL_envgv = gv_fetchpvs("ENV", GV_ADD|GV_NOTQUAL, SVt_PVHV))) {
4090 bool env_is_not_environ;
4091 GvMULTI_on(PL_envgv);
4092 hv = GvHVn(PL_envgv);
4093 hv_magic(hv, NULL, PERL_MAGIC_env);
4095 #ifdef USE_ENVIRON_ARRAY
4096 /* Note that if the supplied env parameter is actually a copy
4097 of the global environ then it may now point to free'd memory
4098 if the environment has been modified since. To avoid this
4099 problem we treat env==NULL as meaning 'use the default'
4103 env_is_not_environ = env != environ;
4104 if (env_is_not_environ
4105 # ifdef USE_ITHREADS
4106 && PL_curinterp == aTHX
4115 for (; *env; env++) {
4118 if (!(s = strchr(old_var,'=')) || s == old_var)
4121 #if defined(MSDOS) && !defined(DJGPP)
4123 (void)strupr(old_var);
4126 sv = newSVpv(s+1, 0);
4127 (void)hv_store(hv, old_var, s - old_var, sv, 0);
4128 if (env_is_not_environ)
4132 #endif /* USE_ENVIRON_ARRAY */
4133 #endif /* !PERL_MICRO */
4136 #ifdef THREADS_HAVE_PIDS
4137 PL_ppid = (IV)getppid();
4140 /* touch @F array to prevent spurious warnings 20020415 MJD */
4142 (void) get_av("main::F", GV_ADD | GV_ADDMULTI);
4147 S_init_perllib(pTHX)
4151 const char *perl5lib = NULL;
4154 #if defined(WIN32) && !defined(PERL_IS_MINIPERL)
4160 perl5lib = PerlEnv_getenv("PERL5LIB");
4162 * It isn't possible to delete an environment variable with
4163 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4164 * case we treat PERL5LIB as undefined if it has a zero-length value.
4166 #if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
4167 if (perl5lib && *perl5lib != '\0')
4171 incpush_use_sep(perl5lib, 0, INCPUSH_ADD_SUB_DIRS);
4173 s = PerlEnv_getenv("PERLLIB");
4175 incpush_use_sep(s, 0, 0);
4178 /* Treat PERL5?LIB as a possible search list logical name -- the
4179 * "natural" VMS idiom for a Unix path string. We allow each
4180 * element to be a set of |-separated directories for compatibility.
4184 if (my_trnlnm("PERL5LIB",buf,0))
4186 incpush_use_sep(buf, 0, INCPUSH_ADD_SUB_DIRS);
4187 } while (my_trnlnm("PERL5LIB",buf,++idx));
4189 while (my_trnlnm("PERLLIB",buf,idx++))
4190 incpush_use_sep(buf, 0, 0);
4195 #ifndef PERL_IS_MINIPERL
4196 /* miniperl gets just -I..., the split of $ENV{PERL5LIB}, and "." in @INC
4197 (and not the architecture specific directories from $ENV{PERL5LIB}) */
4199 /* Use the ~-expanded versions of APPLLIB (undocumented),
4200 SITEARCH, SITELIB, VENDORARCH, VENDORLIB, ARCHLIB and PRIVLIB
4203 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP),
4204 INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4208 /* sitearch is always relative to sitelib on Windows for
4209 * DLL-based path intuition to work correctly */
4210 # if !defined(WIN32)
4211 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITEARCH_EXP),
4212 INCPUSH_CAN_RELOCATE);
4218 /* this picks up sitearch as well */
4219 s = win32_get_sitelib(PERL_FS_VERSION, &len);
4221 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4223 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_EXP), INCPUSH_CAN_RELOCATE);
4227 #ifdef PERL_VENDORARCH_EXP
4228 /* vendorarch is always relative to vendorlib on Windows for
4229 * DLL-based path intuition to work correctly */
4230 # if !defined(WIN32)
4231 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORARCH_EXP),
4232 INCPUSH_CAN_RELOCATE);
4236 #ifdef PERL_VENDORLIB_EXP
4238 /* this picks up vendorarch as well */
4239 s = win32_get_vendorlib(PERL_FS_VERSION, &len);
4241 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4243 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_EXP),
4244 INCPUSH_CAN_RELOCATE);
4249 S_incpush_use_sep(aTHX_ STR_WITH_LEN(ARCHLIB_EXP), INCPUSH_CAN_RELOCATE);
4253 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
4257 s = win32_get_privlib(PERL_FS_VERSION, &len);
4259 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4262 S_incpush_use_sep(aTHX_ PRIVLIB_EXP, 0, INCPUSH_CAN_RELOCATE);
4264 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PRIVLIB_EXP), INCPUSH_CAN_RELOCATE);
4268 #ifdef PERL_OTHERLIBDIRS
4269 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS),
4270 INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_NOT_BASEDIR
4271 |INCPUSH_CAN_RELOCATE);
4277 * It isn't possible to delete an environment variable with
4278 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4279 * case we treat PERL5LIB as undefined if it has a zero-length value.
4281 #if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
4282 if (perl5lib && *perl5lib != '\0')
4286 incpush_use_sep(perl5lib, 0,
4287 INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
4289 /* Treat PERL5?LIB as a possible search list logical name -- the
4290 * "natural" VMS idiom for a Unix path string. We allow each
4291 * element to be a set of |-separated directories for compatibility.
4295 if (my_trnlnm("PERL5LIB",buf,0))
4297 incpush_use_sep(buf, 0,
4298 INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
4299 } while (my_trnlnm("PERL5LIB",buf,++idx));
4303 /* Use the ~-expanded versions of APPLLIB (undocumented),
4304 SITELIB and VENDORLIB for older versions
4307 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP), INCPUSH_ADD_OLD_VERS
4308 |INCPUSH_NOT_BASEDIR|INCPUSH_CAN_RELOCATE);
4311 #if defined(SITELIB_STEM) && defined(PERL_INC_VERSION_LIST)
4312 /* Search for version-specific dirs below here */
4313 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_STEM),
4314 INCPUSH_ADD_OLD_VERS|INCPUSH_CAN_RELOCATE);
4318 #if defined(PERL_VENDORLIB_STEM) && defined(PERL_INC_VERSION_LIST)
4319 /* Search for version-specific dirs below here */
4320 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_STEM),
4321 INCPUSH_ADD_OLD_VERS|INCPUSH_CAN_RELOCATE);
4324 #ifdef PERL_OTHERLIBDIRS
4325 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS),
4326 INCPUSH_ADD_OLD_VERS|INCPUSH_ADD_ARCHONLY_SUB_DIRS
4327 |INCPUSH_CAN_RELOCATE);
4329 #endif /* !PERL_IS_MINIPERL */
4332 S_incpush(aTHX_ STR_WITH_LEN("."), 0);
4335 #if defined(DOSISH) || defined(EPOC) || defined(__SYMBIAN32__)
4336 # define PERLLIB_SEP ';'
4339 # define PERLLIB_SEP '|'
4341 # define PERLLIB_SEP ':'
4344 #ifndef PERLLIB_MANGLE
4345 # define PERLLIB_MANGLE(s,n) (s)
4348 #ifndef PERL_IS_MINIPERL
4349 /* Push a directory onto @INC if it exists.
4350 Generate a new SV if we do this, to save needing to copy the SV we push
4353 S_incpush_if_exists(pTHX_ AV *const av, SV *dir, SV *const stem)
4358 PERL_ARGS_ASSERT_INCPUSH_IF_EXISTS;
4360 if (PerlLIO_stat(SvPVX_const(dir), &tmpstatbuf) >= 0 &&
4361 S_ISDIR(tmpstatbuf.st_mode)) {
4363 dir = newSVsv(stem);
4365 /* Truncate dir back to stem. */
4366 SvCUR_set(dir, SvCUR(stem));
4373 S_incpush(pTHX_ const char *const dir, STRLEN len, U32 flags)
4376 #ifndef PERL_IS_MINIPERL
4377 const U8 using_sub_dirs
4378 = (U8)flags & (INCPUSH_ADD_VERSIONED_SUB_DIRS
4379 |INCPUSH_ADD_ARCHONLY_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
4380 const U8 add_versioned_sub_dirs
4381 = (U8)flags & INCPUSH_ADD_VERSIONED_SUB_DIRS;
4382 const U8 add_archonly_sub_dirs
4383 = (U8)flags & INCPUSH_ADD_ARCHONLY_SUB_DIRS;
4384 #ifdef PERL_INC_VERSION_LIST
4385 const U8 addoldvers = (U8)flags & INCPUSH_ADD_OLD_VERS;
4388 const U8 canrelocate = (U8)flags & INCPUSH_CAN_RELOCATE;
4389 const U8 unshift = (U8)flags & INCPUSH_UNSHIFT;
4390 const U8 push_basedir = (flags & INCPUSH_NOT_BASEDIR) ? 0 : 1;
4391 AV *const inc = GvAVn(PL_incgv);
4393 PERL_ARGS_ASSERT_INCPUSH;
4396 /* Could remove this vestigial extra block, if we don't mind a lot of
4397 re-indenting diff noise. */
4400 /* Change 20189146be79a0596543441fa369c6bf7f85103f, to fix RT#6665,
4401 arranged to unshift #! line -I onto the front of @INC. However,
4402 -I can add version and architecture specific libraries, and they
4403 need to go first. The old code assumed that it was always
4404 pushing. Hence to make it work, need to push the architecture
4405 (etc) libraries onto a temporary array, then "unshift" that onto
4406 the front of @INC. */
4407 #ifndef PERL_IS_MINIPERL
4408 AV *const av = (using_sub_dirs) ? (unshift ? newAV() : inc) : NULL;
4412 /* I am not convinced that this is valid when PERLLIB_MANGLE is
4413 defined to so something (in os2/os2.c), but the code has been
4414 this way, ignoring any possible changed of length, since
4415 760ac839baf413929cd31cc32ffd6dba6b781a81 (5.003_02) so I'll leave
4417 libdir = newSVpvn(PERLLIB_MANGLE(dir, len), len);
4419 libdir = newSVpv(PERLLIB_MANGLE(dir, 0), 0);
4426 if ((unix = tounixspec_ts(SvPV(libdir,len),NULL)) != NULL) {
4428 while (unix[len-1] == '/') len--; /* Cosmetic */
4429 sv_usepvn(libdir,unix,len);
4432 PerlIO_printf(Perl_error_log,
4433 "Failed to unixify @INC element \"%s\"\n",
4437 /* Do the if() outside the #ifdef to avoid warnings about an unused
4440 #ifdef PERL_RELOCATABLE_INC
4442 * Relocatable include entries are marked with a leading .../
4445 * 0: Remove that leading ".../"
4446 * 1: Remove trailing executable name (anything after the last '/')
4447 * from the perl path to give a perl prefix
4449 * While the @INC element starts "../" and the prefix ends with a real
4450 * directory (ie not . or ..) chop that real directory off the prefix
4451 * and the leading "../" from the @INC element. ie a logical "../"
4453 * Finally concatenate the prefix and the remainder of the @INC element
4454 * The intent is that /usr/local/bin/perl and .../../lib/perl5
4455 * generates /usr/local/lib/perl5
4457 const char *libpath = SvPVX(libdir);
4458 STRLEN libpath_len = SvCUR(libdir);
4459 if (libpath_len >= 4 && memEQ (libpath, ".../", 4)) {
4461 SV * const caret_X = get_sv("\030", 0);
4462 /* Going to use the SV just as a scratch buffer holding a C
4468 /* $^X is *the* source of taint if tainting is on, hence
4469 SvPOK() won't be true. */
4471 assert(SvPOKp(caret_X));
4472 prefix_sv = newSVpvn_flags(SvPVX(caret_X), SvCUR(caret_X),
4474 /* Firstly take off the leading .../
4475 If all else fail we'll do the paths relative to the current
4477 sv_chop(libdir, libpath + 4);
4478 /* Don't use SvPV as we're intentionally bypassing taining,
4479 mortal copies that the mg_get of tainting creates, and
4480 corruption that seems to come via the save stack.
4481 I guess that the save stack isn't correctly set up yet. */
4482 libpath = SvPVX(libdir);
4483 libpath_len = SvCUR(libdir);
4485 /* This would work more efficiently with memrchr, but as it's
4486 only a GNU extension we'd need to probe for it and
4487 implement our own. Not hard, but maybe not worth it? */
4489 prefix = SvPVX(prefix_sv);
4490 lastslash = strrchr(prefix, '/');
4492 /* First time in with the *lastslash = '\0' we just wipe off
4493 the trailing /perl from (say) /usr/foo/bin/perl
4497 while ((*lastslash = '\0'), /* Do that, come what may. */
4498 (libpath_len >= 3 && memEQ(libpath, "../", 3)
4499 && (lastslash = strrchr(prefix, '/')))) {
4500 if (lastslash[1] == '\0'
4501 || (lastslash[1] == '.'
4502 && (lastslash[2] == '/' /* ends "/." */
4503 || (lastslash[2] == '/'
4504 && lastslash[3] == '/' /* or "/.." */
4506 /* Prefix ends "/" or "/." or "/..", any of which
4507 are fishy, so don't do any more logical cleanup.
4511 /* Remove leading "../" from path */
4514 /* Next iteration round the loop removes the last
4515 directory name from prefix by writing a '\0' in
4516 the while clause. */
4518 /* prefix has been terminated with a '\0' to the correct
4519 length. libpath points somewhere into the libdir SV.
4520 We need to join the 2 with '/' and drop the result into
4522 tempsv = Perl_newSVpvf(aTHX_ "%s/%s", prefix, libpath);
4523 SvREFCNT_dec(libdir);
4524 /* And this is the new libdir. */
4527 (PL_uid != PL_euid || PL_gid != PL_egid)) {
4528 /* Need to taint relocated paths if running set ID */
4529 SvTAINTED_on(libdir);
4532 SvREFCNT_dec(prefix_sv);
4536 #ifndef PERL_IS_MINIPERL
4538 * BEFORE pushing libdir onto @INC we may first push version- and
4539 * archname-specific sub-directories.
4541 if (using_sub_dirs) {
4543 #ifdef PERL_INC_VERSION_LIST
4544 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
4545 const char * const incverlist[] = { PERL_INC_VERSION_LIST };
4546 const char * const *incver;
4548 subdir = newSVsv(libdir);
4550 if (add_versioned_sub_dirs) {
4551 /* .../version/archname if -d .../version/archname */
4552 sv_catpvs(subdir, "/" PERL_FS_VERSION "/" ARCHNAME);
4553 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4555 /* .../version if -d .../version */
4556 sv_catpvs(subdir, "/" PERL_FS_VERSION);
4557 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4560 #ifdef PERL_INC_VERSION_LIST
4562 for (incver = incverlist; *incver; incver++) {
4563 /* .../xxx if -d .../xxx */
4564 Perl_sv_catpvf(aTHX_ subdir, "/%s", *incver);
4565 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4570 if (add_archonly_sub_dirs) {
4571 /* .../archname if -d .../archname */
4572 sv_catpvs(subdir, "/" ARCHNAME);
4573 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4577 assert (SvREFCNT(subdir) == 1);
4578 SvREFCNT_dec(subdir);
4580 #endif /* !PERL_IS_MINIPERL */
4581 /* finally add this lib directory at the end of @INC */
4583 #ifdef PERL_IS_MINIPERL
4584 const U32 extra = 0;
4586 U32 extra = av_len(av) + 1;
4588 av_unshift(inc, extra + push_basedir);
4590 av_store(inc, extra, libdir);
4591 #ifndef PERL_IS_MINIPERL
4593 /* av owns a reference, av_store() expects to be donated a
4594 reference, and av expects to be sane when it's cleared.
4595 If I wanted to be naughty and wrong, I could peek inside the
4596 implementation of av_clear(), realise that it uses
4597 SvREFCNT_dec() too, so av's array could be a run of NULLs,
4598 and so directly steal from it (with a memcpy() to inc, and
4599 then memset() to NULL them out. But people copy code from the
4600 core expecting it to be best practise, so let's use the API.
4601 Although studious readers will note that I'm not checking any
4603 av_store(inc, extra, SvREFCNT_inc(*av_fetch(av, extra, FALSE)));
4608 else if (push_basedir) {
4609 av_push(inc, libdir);
4612 if (!push_basedir) {
4613 assert (SvREFCNT(libdir) == 1);
4614 SvREFCNT_dec(libdir);
4620 S_incpush_use_sep(pTHX_ const char *p, STRLEN len, U32 flags)
4624 /* This logic has been broken out from S_incpush(). It may be possible to
4627 PERL_ARGS_ASSERT_INCPUSH_USE_SEP;
4629 /* perl compiled with -DPERL_RELOCATABLE_INCPUSH will ignore the len
4630 * argument to incpush_use_sep. This allows creation of relocatable
4631 * Perl distributions that patch the binary at install time. Those
4632 * distributions will have to provide their own relocation tools; this
4633 * is not a feature otherwise supported by core Perl.
4635 #ifndef PERL_RELOCATABLE_INCPUSH
4642 /* Break at all separators */
4643 while ((s = (const char*)memchr(p, PERLLIB_SEP, end - p))) {
4645 /* skip any consecutive separators */
4647 /* Uncomment the next line for PATH semantics */
4648 /* But you'll need to write tests */
4649 /* av_push(GvAVn(PL_incgv), newSVpvs(".")); */
4651 incpush(p, (STRLEN)(s - p), flags);
4656 incpush(p, (STRLEN)(end - p), flags);
4661 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
4665 volatile const line_t oldline = PL_curcop ? CopLINE(PL_curcop) : 0;
4671 PERL_ARGS_ASSERT_CALL_LIST;
4673 while (av_len(paramList) >= 0) {
4674 cv = MUTABLE_CV(av_shift(paramList));
4676 if (paramList == PL_beginav) {
4677 /* save PL_beginav for compiler */
4678 Perl_av_create_and_push(aTHX_ &PL_beginav_save, MUTABLE_SV(cv));
4680 else if (paramList == PL_checkav) {
4681 /* save PL_checkav for compiler */
4682 Perl_av_create_and_push(aTHX_ &PL_checkav_save, MUTABLE_SV(cv));
4684 else if (paramList == PL_unitcheckav) {
4685 /* save PL_unitcheckav for compiler */
4686 Perl_av_create_and_push(aTHX_ &PL_unitcheckav_save, MUTABLE_SV(cv));
4697 PL_madskills |= 16384;
4702 PL_madskills &= ~16384;
4705 (void)SvPV_const(atsv, len);
4707 PL_curcop = &PL_compiling;
4708 CopLINE_set(PL_curcop, oldline);
4709 if (paramList == PL_beginav)
4710 sv_catpvs(atsv, "BEGIN failed--compilation aborted");
4712 Perl_sv_catpvf(aTHX_ atsv,
4713 "%s failed--call queue aborted",
4714 paramList == PL_checkav ? "CHECK"
4715 : paramList == PL_initav ? "INIT"
4716 : paramList == PL_unitcheckav ? "UNITCHECK"
4718 while (PL_scopestack_ix > oldscope)
4721 Perl_croak(aTHX_ "%"SVf"", SVfARG(atsv));
4728 /* my_exit() was called */
4729 while (PL_scopestack_ix > oldscope)
4732 PL_curstash = PL_defstash;
4733 PL_curcop = &PL_compiling;
4734 CopLINE_set(PL_curcop, oldline);
4740 PL_curcop = &PL_compiling;
4741 CopLINE_set(PL_curcop, oldline);
4744 PerlIO_printf(Perl_error_log, "panic: restartop\n");
4753 Perl_my_exit(pTHX_ U32 status)
4764 STATUS_EXIT_SET(status);
4771 Perl_my_failure_exit(pTHX)
4775 /* We have been called to fall on our sword. The desired exit code
4776 * should be already set in STATUS_UNIX, but could be shifted over
4777 * by 8 bits. STATUS_UNIX_EXIT_SET will handle the cases where a
4780 * If an error code has not been set, then force the issue.
4782 if (MY_POSIX_EXIT) {
4784 /* According to the die_exit.t tests, if errno is non-zero */
4785 /* It should be used for the error status. */
4787 if (errno == EVMSERR) {
4788 STATUS_NATIVE = vaxc$errno;
4791 /* According to die_exit.t tests, if the child_exit code is */
4792 /* also zero, then we need to exit with a code of 255 */
4793 if ((errno != 0) && (errno < 256))
4794 STATUS_UNIX_EXIT_SET(errno);
4795 else if (STATUS_UNIX < 255) {
4796 STATUS_UNIX_EXIT_SET(255);
4801 /* The exit code could have been set by $? or vmsish which
4802 * means that it may not have fatal set. So convert
4803 * success/warning codes to fatal with out changing
4804 * the POSIX status code. The severity makes VMS native
4805 * status handling work, while UNIX mode programs use the
4806 * the POSIX exit codes.
4808 if ((STATUS_NATIVE & (STS$K_SEVERE|STS$K_ERROR)) == 0) {
4809 STATUS_NATIVE &= STS$M_COND_ID;
4810 STATUS_NATIVE |= STS$K_ERROR | STS$M_INHIB_MSG;
4814 /* Traditionally Perl on VMS always expects a Fatal Error. */
4815 if (vaxc$errno & 1) {
4817 /* So force success status to failure */
4818 if (STATUS_NATIVE & 1)
4823 STATUS_UNIX = EINTR; /* In case something cares */
4828 STATUS_NATIVE = vaxc$errno; /* Should already be this */
4830 /* Encode the severity code */
4831 severity = STATUS_NATIVE & STS$M_SEVERITY;
4832 STATUS_UNIX = (severity ? severity : 1) << 8;
4834 /* Perl expects this to be a fatal error */
4835 if (severity != STS$K_SEVERE)
4844 STATUS_UNIX_SET(errno);
4846 exitstatus = STATUS_UNIX >> 8;
4847 if (exitstatus & 255)
4848 STATUS_UNIX_SET(exitstatus);
4850 STATUS_UNIX_SET(255);
4857 S_my_exit_jump(pTHX)
4862 SvREFCNT_dec(PL_e_script);
4866 POPSTACK_TO(PL_mainstack);
4874 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen)
4877 const char * const p = SvPVX_const(PL_e_script);
4878 const char *nl = strchr(p, '\n');
4880 PERL_UNUSED_ARG(idx);
4881 PERL_UNUSED_ARG(maxlen);
4883 nl = (nl) ? nl+1 : SvEND(PL_e_script);
4885 filter_del(read_e_script);
4888 sv_catpvn(buf_sv, p, nl-p);
4889 sv_chop(PL_e_script, nl);
4895 * c-indentation-style: bsd
4897 * indent-tabs-mode: t
4900 * ex: set ts=8 sts=4 sw=4 noet: