3 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
4 * 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 by Larry Wall and others
6 * You may distribute under the terms of either the GNU General Public
7 * License or the Artistic License, as specified in the README file.
12 * A ship then new they built for him
13 * of mithril and of elven-glass
14 * --from Bilbo's song of EƤrendil
16 * [p.236 of _The Lord of the Rings_, II/i: "Many Meetings"]
19 /* This file contains the top-level functions that are used to create, use
20 * and destroy a perl interpreter, plus the functions used by XS code to
21 * call back into perl. Note that it does not contain the actual main()
22 * function of the interpreter; that can be found in perlmain.c
26 #define PERL_IN_PERL_C
28 #include "patchlevel.h" /* for local_patches */
34 /* XXX If this causes problems, set i_unistd=undef in the hint file. */
39 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41 # include <sys/wait.h>
49 char control[CMSG_SPACE(sizeof(int))];
66 #if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
67 char *getenv (char *); /* Usually in <stdlib.h> */
70 static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
72 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
73 /* Drop everything. Heck, don't even try to call it */
74 # define validate_suid(validarg, scriptname, fdscript, suidscript, linestr_sv, rsfp) NOOP
76 /* Drop almost everything */
77 # define validate_suid(validarg, scriptname, fdscript, suidscript, linestr_sv, rsfp) S_validate_suid(aTHX_ rsfp)
80 #define CALL_BODY_EVAL(myop) \
81 if (PL_op == (myop)) \
82 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX); \
86 #define CALL_BODY_SUB(myop) \
87 if (PL_op == (myop)) \
88 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); \
92 #define CALL_LIST_BODY(cv) \
93 PUSHMARK(PL_stack_sp); \
94 call_sv(MUTABLE_SV((cv)), G_EVAL|G_DISCARD);
97 S_init_tls_and_interp(PerlInterpreter *my_perl)
101 PERL_SET_INTERP(my_perl);
102 #if defined(USE_ITHREADS)
105 PERL_SET_THX(my_perl);
108 MUTEX_INIT(&PL_dollarzero_mutex);
110 #ifdef PERL_IMPLICIT_CONTEXT
111 MUTEX_INIT(&PL_my_ctx_mutex);
114 #if defined(USE_ITHREADS)
117 /* This always happens for non-ithreads */
120 PERL_SET_THX(my_perl);
125 /* these implement the PERL_SYS_INIT, PERL_SYS_INIT3, PERL_SYS_TERM macros */
128 Perl_sys_init(int* argc, char*** argv)
132 PERL_ARGS_ASSERT_SYS_INIT;
134 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
135 PERL_UNUSED_ARG(argv);
136 PERL_SYS_INIT_BODY(argc, argv);
140 Perl_sys_init3(int* argc, char*** argv, char*** env)
144 PERL_ARGS_ASSERT_SYS_INIT3;
146 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
147 PERL_UNUSED_ARG(argv);
148 PERL_UNUSED_ARG(env);
149 PERL_SYS_INIT3_BODY(argc, argv, env);
156 if (!PL_veto_cleanup) {
157 PERL_SYS_TERM_BODY();
162 #ifdef PERL_IMPLICIT_SYS
164 perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
165 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
166 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
167 struct IPerlDir* ipD, struct IPerlSock* ipS,
168 struct IPerlProc* ipP)
170 PerlInterpreter *my_perl;
172 PERL_ARGS_ASSERT_PERL_ALLOC_USING;
174 /* Newx() needs interpreter, so call malloc() instead */
175 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
176 S_init_tls_and_interp(my_perl);
177 Zero(my_perl, 1, PerlInterpreter);
187 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
194 =head1 Embedding Functions
196 =for apidoc perl_alloc
198 Allocates a new Perl interpreter. See L<perlembed>.
206 PerlInterpreter *my_perl;
208 /* Newx() needs interpreter, so call malloc() instead */
209 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
211 S_init_tls_and_interp(my_perl);
212 #ifndef PERL_TRACK_MEMPOOL
213 return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter);
215 Zero(my_perl, 1, PerlInterpreter);
216 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
220 #endif /* PERL_IMPLICIT_SYS */
223 =for apidoc perl_construct
225 Initializes a new Perl interpreter. See L<perlembed>.
231 perl_construct(pTHXx)
235 PERL_ARGS_ASSERT_PERL_CONSTRUCT;
239 PL_perl_destruct_level = 1;
241 PERL_UNUSED_ARG(my_perl);
242 if (PL_perl_destruct_level > 0)
245 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
247 /* set read-only and try to insure than we wont see REFCNT==0
250 SvREADONLY_on(&PL_sv_undef);
251 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
253 sv_setpv(&PL_sv_no,PL_No);
254 /* value lookup in void context - happens to have the side effect
255 of caching the numeric forms. However, as &PL_sv_no doesn't contain
256 a string that is a valid numer, we have to turn the public flags by
262 SvREADONLY_on(&PL_sv_no);
263 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
265 sv_setpv(&PL_sv_yes,PL_Yes);
268 SvREADONLY_on(&PL_sv_yes);
269 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
271 SvREADONLY_on(&PL_sv_placeholder);
272 SvREFCNT(&PL_sv_placeholder) = (~(U32)0)/2;
274 PL_sighandlerp = (Sighandler_t) Perl_sighandler;
275 #ifdef PERL_USES_PL_PIDSTATUS
276 PL_pidstatus = newHV();
279 PL_rs = newSVpvs("\n");
289 SET_NUMERIC_STANDARD();
291 #if defined(LOCAL_PATCH_COUNT)
292 PL_localpatches = local_patches; /* For possible -v */
295 #ifdef HAVE_INTERP_INTERN
299 PerlIO_init(aTHX); /* Hook to IO system */
301 PL_fdpid = newAV(); /* for remembering popen pids by fd */
302 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
303 PL_errors = newSVpvs("");
304 sv_setpvs(PERL_DEBUG_PAD(0), ""); /* For regex debugging. */
305 sv_setpvs(PERL_DEBUG_PAD(1), ""); /* ext/re needs these */
306 sv_setpvs(PERL_DEBUG_PAD(2), ""); /* even without DEBUGGING. */
308 /* First entry is a list of empty elements. It needs to be initialised
309 else all hell breaks loose in S_find_uninit_var(). */
310 Perl_av_create_and_push(aTHX_ &PL_regex_padav, newSVpvs(""));
311 PL_regex_pad = AvARRAY(PL_regex_padav);
313 #ifdef USE_REENTRANT_API
314 Perl_reentrant_init(aTHX);
317 /* Note that strtab is a rather special HV. Assumptions are made
318 about not iterating on it, and not adding tie magic to it.
319 It is properly deallocated in perl_destruct() */
322 HvSHAREKEYS_off(PL_strtab); /* mandatory */
323 hv_ksplit(PL_strtab, 512);
325 #if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
326 _dyld_lookup_and_bind
327 ("__environ", (unsigned long *) &environ_pointer, NULL);
331 # ifdef USE_ENVIRON_ARRAY
332 PL_origenviron = environ;
336 /* Use sysconf(_SC_CLK_TCK) if available, if not
337 * available or if the sysconf() fails, use the HZ.
338 * BeOS has those, but returns the wrong value.
339 * The HZ if not originally defined has been by now
340 * been defined as CLK_TCK, if available. */
341 #if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK) && !defined(__BEOS__)
342 PL_clocktick = sysconf(_SC_CLK_TCK);
343 if (PL_clocktick <= 0)
347 PL_stashcache = newHV();
349 PL_patchlevel = newSVpvs("v" PERL_VERSION_STRING);
352 if (!PL_mmap_page_size) {
353 #if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
355 SETERRNO(0, SS_NORMAL);
357 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
359 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
361 if ((long) PL_mmap_page_size < 0) {
363 SV * const error = ERRSV;
364 SvUPGRADE(error, SVt_PV);
365 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
368 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
372 # ifdef HAS_GETPAGESIZE
373 PL_mmap_page_size = getpagesize();
375 # if defined(I_SYS_PARAM) && defined(PAGESIZE)
376 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
380 if (PL_mmap_page_size <= 0)
381 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
382 (IV) PL_mmap_page_size);
384 #endif /* HAS_MMAP */
386 #if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
387 PL_timesbase.tms_utime = 0;
388 PL_timesbase.tms_stime = 0;
389 PL_timesbase.tms_cutime = 0;
390 PL_timesbase.tms_cstime = 0;
393 PL_registered_mros = newHV();
394 /* Start with 1 bucket, for DFS. It's unlikely we'll need more. */
395 HvMAX(PL_registered_mros) = 0;
401 =for apidoc nothreadhook
403 Stub that provides thread hook for perl_destruct when there are
410 Perl_nothreadhook(pTHX)
416 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
418 Perl_dump_sv_child(pTHX_ SV *sv)
421 const int sock = PL_dumper_fd;
422 const int debug_fd = PerlIO_fileno(Perl_debug_log);
423 union control_un control;
426 struct cmsghdr *cmptr;
428 unsigned char buffer[256];
430 PERL_ARGS_ASSERT_DUMP_SV_CHILD;
432 if(sock == -1 || debug_fd == -1)
435 PerlIO_flush(Perl_debug_log);
437 /* All these shenanigans are to pass a file descriptor over to our child for
438 it to dump out to. We can't let it hold open the file descriptor when it
439 forks, as the file descriptor it will dump to can turn out to be one end
440 of pipe that some other process will wait on for EOF. (So as it would
441 be open, the wait would be forever.) */
443 msg.msg_control = control.control;
444 msg.msg_controllen = sizeof(control.control);
445 /* We're a connected socket so we don't need a destination */
451 cmptr = CMSG_FIRSTHDR(&msg);
452 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
453 cmptr->cmsg_level = SOL_SOCKET;
454 cmptr->cmsg_type = SCM_RIGHTS;
455 *((int *)CMSG_DATA(cmptr)) = 1;
457 vec[0].iov_base = (void*)&sv;
458 vec[0].iov_len = sizeof(sv);
459 got = sendmsg(sock, &msg, 0);
462 perror("Debug leaking scalars parent sendmsg failed");
465 if(got < sizeof(sv)) {
466 perror("Debug leaking scalars parent short sendmsg");
470 /* Return protocol is
472 unsigned char: length of location string (0 for empty)
473 unsigned char*: string (not terminated)
475 vec[0].iov_base = (void*)&returned_errno;
476 vec[0].iov_len = sizeof(returned_errno);
477 vec[1].iov_base = buffer;
480 got = readv(sock, vec, 2);
483 perror("Debug leaking scalars parent read failed");
484 PerlIO_flush(PerlIO_stderr());
487 if(got < sizeof(returned_errno) + 1) {
488 perror("Debug leaking scalars parent short read");
489 PerlIO_flush(PerlIO_stderr());
494 got = read(sock, buffer + 1, *buffer);
496 perror("Debug leaking scalars parent read 2 failed");
497 PerlIO_flush(PerlIO_stderr());
502 perror("Debug leaking scalars parent short read 2");
503 PerlIO_flush(PerlIO_stderr());
508 if (returned_errno || *buffer) {
509 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
510 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
511 returned_errno, strerror(returned_errno));
517 =for apidoc perl_destruct
519 Shuts down a Perl interpreter. See L<perlembed>.
528 VOL signed char destruct_level; /* see possible values in intrpvar.h */
530 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
534 PERL_ARGS_ASSERT_PERL_DESTRUCT;
536 PERL_UNUSED_ARG(my_perl);
539 /* wait for all pseudo-forked children to finish */
540 PERL_WAIT_FOR_CHILDREN;
542 destruct_level = PL_perl_destruct_level;
545 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
547 const int i = atoi(s);
548 if (destruct_level < i)
554 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
560 if (PL_endav && !PL_minus_c)
561 call_list(PL_scopestack_ix, PL_endav);
567 /* Need to flush since END blocks can produce output */
570 if (CALL_FPTR(PL_threadhook)(aTHX)) {
571 /* Threads hook has vetoed further cleanup */
572 PL_veto_cleanup = TRUE;
576 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
577 if (destruct_level != 0) {
578 /* Fork here to create a child. Our child's job is to preserve the
579 state of scalars prior to destruction, so that we can instruct it
580 to dump any scalars that we later find have leaked.
581 There's no subtlety in this code - it assumes POSIX, and it doesn't
585 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
586 perror("Debug leaking scalars socketpair failed");
592 perror("Debug leaking scalars fork failed");
596 /* We are the child */
597 const int sock = fd[1];
598 const int debug_fd = PerlIO_fileno(Perl_debug_log);
601 /* Our success message is an integer 0, and a char 0 */
602 static const char success[sizeof(int) + 1] = {0};
606 /* We need to close all other file descriptors otherwise we end up
607 with interesting hangs, where the parent closes its end of a
608 pipe, and sits waiting for (another) child to terminate. Only
609 that child never terminates, because it never gets EOF, because
610 we also have the far end of the pipe open. We even need to
611 close the debugging fd, because sometimes it happens to be one
612 end of a pipe, and a process is waiting on the other end for
613 EOF. Normally it would be closed at some point earlier in
614 destruction, but if we happen to cause the pipe to remain open,
615 EOF never occurs, and we get an infinite hang. Hence all the
616 games to pass in a file descriptor if it's actually needed. */
618 f = sysconf(_SC_OPEN_MAX);
620 where = "sysconf failed";
631 union control_un control;
634 struct cmsghdr *cmptr;
638 msg.msg_control = control.control;
639 msg.msg_controllen = sizeof(control.control);
640 /* We're a connected socket so we don't need a source */
644 msg.msg_iovlen = sizeof(vec)/sizeof(vec[0]);
646 vec[0].iov_base = (void*)⌖
647 vec[0].iov_len = sizeof(target);
649 got = recvmsg(sock, &msg, 0);
654 where = "recv failed";
657 if(got < sizeof(target)) {
658 where = "short recv";
662 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
666 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
667 where = "wrong cmsg_len";
670 if(cmptr->cmsg_level != SOL_SOCKET) {
671 where = "wrong cmsg_level";
674 if(cmptr->cmsg_type != SCM_RIGHTS) {
675 where = "wrong cmsg_type";
679 got_fd = *(int*)CMSG_DATA(cmptr);
680 /* For our last little bit of trickery, put the file descriptor
681 back into Perl_debug_log, as if we never actually closed it
683 if(got_fd != debug_fd) {
684 if (dup2(got_fd, debug_fd) == -1) {
691 PerlIO_flush(Perl_debug_log);
693 got = write(sock, &success, sizeof(success));
696 where = "write failed";
699 if(got < sizeof(success)) {
700 where = "short write";
707 int send_errno = errno;
708 unsigned char length = (unsigned char) strlen(where);
709 struct iovec failure[3] = {
710 {(void*)&send_errno, sizeof(send_errno)},
712 {(void*)where, length}
714 int got = writev(sock, failure, 3);
715 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
716 in the parent if we try to read from the socketpair after the
717 child has exited, even if there was data to read.
718 So sleep a bit to give the parent a fighting chance of
721 _exit((got == -1) ? errno : 0);
725 PL_dumper_fd = fd[0];
730 /* We must account for everything. */
732 /* Destroy the main CV and syntax tree */
733 /* Do this now, because destroying ops can cause new SVs to be generated
734 in Perl_pad_swipe, and when running with -DDEBUG_LEAKING_SCALARS they
735 PL_curcop to point to a valid op from which the filename structure
737 PL_curcop = &PL_compiling;
739 /* ensure comppad/curpad to refer to main's pad */
740 if (CvPADLIST(PL_main_cv)) {
741 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
743 op_free(PL_main_root);
746 PL_main_start = NULL;
747 SvREFCNT_dec(PL_main_cv);
751 /* Tell PerlIO we are about to tear things apart in case
752 we have layers which are using resources that should
756 PerlIO_destruct(aTHX);
758 if (PL_sv_objcount) {
760 * Try to destruct global references. We do this first so that the
761 * destructors and destructees still exist. Some sv's might remain.
762 * Non-referenced objects are on their own.
766 if (PL_defoutgv && !SvREFCNT(PL_defoutgv))
767 PL_defoutgv = NULL; /* may have been freed */
770 /* unhook hooks which will soon be, or use, destroyed data */
771 SvREFCNT_dec(PL_warnhook);
773 SvREFCNT_dec(PL_diehook);
776 /* call exit list functions */
777 while (PL_exitlistlen-- > 0)
778 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
780 Safefree(PL_exitlist);
785 SvREFCNT_dec(PL_registered_mros);
787 /* jettison our possibly duplicated environment */
788 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
789 * so we certainly shouldn't free it here
792 #if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
793 if (environ != PL_origenviron && !PL_use_safe_putenv
795 /* only main thread can free environ[0] contents */
796 && PL_curinterp == aTHX
802 for (i = 0; environ[i]; i++)
803 safesysfree(environ[i]);
805 /* Must use safesysfree() when working with environ. */
806 safesysfree(environ);
808 environ = PL_origenviron;
811 #endif /* !PERL_MICRO */
813 if (destruct_level == 0) {
815 DEBUG_P(debprofdump());
817 #if defined(PERLIO_LAYERS)
818 /* No more IO - including error messages ! */
819 PerlIO_cleanup(aTHX);
822 CopFILE_free(&PL_compiling);
823 CopSTASH_free(&PL_compiling);
825 /* The exit() function will do everything that needs doing. */
829 /* reset so print() ends up where we expect */
833 /* the syntax tree is shared between clones
834 * so op_free(PL_main_root) only ReREFCNT_dec's
835 * REGEXPs in the parent interpreter
836 * we need to manually ReREFCNT_dec for the clones
838 SvREFCNT_dec(PL_regex_padav);
839 PL_regex_padav = NULL;
843 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
844 PL_stashcache = NULL;
846 /* loosen bonds of global variables */
848 /* XXX can PL_parser still be non-null here? */
849 if(PL_parser && PL_parser->rsfp) {
850 (void)PerlIO_close(PL_parser->rsfp);
851 PL_parser->rsfp = NULL;
855 Safefree(PL_splitstr);
865 PL_doswitches = FALSE;
866 PL_dowarn = G_WARN_OFF;
867 PL_doextract = FALSE;
868 PL_sawampersand = FALSE; /* must save all match strings */
871 Safefree(PL_inplace);
873 SvREFCNT_dec(PL_patchlevel);
876 SvREFCNT_dec(PL_e_script);
882 /* magical thingies */
884 SvREFCNT_dec(PL_ofsgv); /* *, */
887 SvREFCNT_dec(PL_ors_sv); /* $\ */
890 SvREFCNT_dec(PL_rs); /* $/ */
893 Safefree(PL_osname); /* $^O */
896 SvREFCNT_dec(PL_statname);
900 /* defgv, aka *_ should be taken care of elsewhere */
902 /* clean up after study() */
903 SvREFCNT_dec(PL_lastscream);
904 PL_lastscream = NULL;
905 Safefree(PL_screamfirst);
907 Safefree(PL_screamnext);
911 Safefree(PL_efloatbuf);
915 /* startup and shutdown function lists */
916 SvREFCNT_dec(PL_beginav);
917 SvREFCNT_dec(PL_beginav_save);
918 SvREFCNT_dec(PL_endav);
919 SvREFCNT_dec(PL_checkav);
920 SvREFCNT_dec(PL_checkav_save);
921 SvREFCNT_dec(PL_unitcheckav);
922 SvREFCNT_dec(PL_unitcheckav_save);
923 SvREFCNT_dec(PL_initav);
925 PL_beginav_save = NULL;
928 PL_checkav_save = NULL;
929 PL_unitcheckav = NULL;
930 PL_unitcheckav_save = NULL;
933 /* shortcuts just get cleared */
942 PL_last_in_gv = NULL;
954 SvREFCNT_dec(PL_argvout_stack);
955 PL_argvout_stack = NULL;
957 SvREFCNT_dec(PL_modglobal);
959 SvREFCNT_dec(PL_preambleav);
960 PL_preambleav = NULL;
961 SvREFCNT_dec(PL_subname);
963 #ifdef PERL_USES_PL_PIDSTATUS
964 SvREFCNT_dec(PL_pidstatus);
967 SvREFCNT_dec(PL_toptarget);
969 SvREFCNT_dec(PL_bodytarget);
970 PL_bodytarget = NULL;
971 PL_formtarget = NULL;
973 /* free locale stuff */
974 #ifdef USE_LOCALE_COLLATE
975 Safefree(PL_collation_name);
976 PL_collation_name = NULL;
979 #ifdef USE_LOCALE_NUMERIC
980 Safefree(PL_numeric_name);
981 PL_numeric_name = NULL;
982 SvREFCNT_dec(PL_numeric_radix_sv);
983 PL_numeric_radix_sv = NULL;
986 /* clear utf8 character classes */
987 SvREFCNT_dec(PL_utf8_alnum);
988 SvREFCNT_dec(PL_utf8_alnumc);
989 SvREFCNT_dec(PL_utf8_ascii);
990 SvREFCNT_dec(PL_utf8_alpha);
991 SvREFCNT_dec(PL_utf8_space);
992 SvREFCNT_dec(PL_utf8_cntrl);
993 SvREFCNT_dec(PL_utf8_graph);
994 SvREFCNT_dec(PL_utf8_digit);
995 SvREFCNT_dec(PL_utf8_upper);
996 SvREFCNT_dec(PL_utf8_lower);
997 SvREFCNT_dec(PL_utf8_print);
998 SvREFCNT_dec(PL_utf8_punct);
999 SvREFCNT_dec(PL_utf8_xdigit);
1000 SvREFCNT_dec(PL_utf8_mark);
1001 SvREFCNT_dec(PL_utf8_toupper);
1002 SvREFCNT_dec(PL_utf8_totitle);
1003 SvREFCNT_dec(PL_utf8_tolower);
1004 SvREFCNT_dec(PL_utf8_tofold);
1005 SvREFCNT_dec(PL_utf8_idstart);
1006 SvREFCNT_dec(PL_utf8_idcont);
1007 PL_utf8_alnum = NULL;
1008 PL_utf8_alnumc = NULL;
1009 PL_utf8_ascii = NULL;
1010 PL_utf8_alpha = NULL;
1011 PL_utf8_space = NULL;
1012 PL_utf8_cntrl = NULL;
1013 PL_utf8_graph = NULL;
1014 PL_utf8_digit = NULL;
1015 PL_utf8_upper = NULL;
1016 PL_utf8_lower = NULL;
1017 PL_utf8_print = NULL;
1018 PL_utf8_punct = NULL;
1019 PL_utf8_xdigit = NULL;
1020 PL_utf8_mark = NULL;
1021 PL_utf8_toupper = NULL;
1022 PL_utf8_totitle = NULL;
1023 PL_utf8_tolower = NULL;
1024 PL_utf8_tofold = NULL;
1025 PL_utf8_idstart = NULL;
1026 PL_utf8_idcont = NULL;
1028 if (!specialWARN(PL_compiling.cop_warnings))
1029 PerlMemShared_free(PL_compiling.cop_warnings);
1030 PL_compiling.cop_warnings = NULL;
1031 Perl_refcounted_he_free(aTHX_ PL_compiling.cop_hints_hash);
1032 PL_compiling.cop_hints_hash = NULL;
1033 CopFILE_free(&PL_compiling);
1034 CopSTASH_free(&PL_compiling);
1036 /* Prepare to destruct main symbol table. */
1041 SvREFCNT_dec(PL_curstname);
1042 PL_curstname = NULL;
1044 /* clear queued errors */
1045 SvREFCNT_dec(PL_errors);
1048 SvREFCNT_dec(PL_isarev);
1051 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
1052 if (PL_scopestack_ix != 0)
1053 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
1054 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1055 (long)PL_scopestack_ix);
1056 if (PL_savestack_ix != 0)
1057 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
1058 "Unbalanced saves: %ld more saves than restores\n",
1059 (long)PL_savestack_ix);
1060 if (PL_tmps_floor != -1)
1061 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1062 (long)PL_tmps_floor + 1);
1063 if (cxstack_ix != -1)
1064 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1065 (long)cxstack_ix + 1);
1068 /* Now absolutely destruct everything, somehow or other, loops or no. */
1070 /* the 2 is for PL_fdpid and PL_strtab */
1071 while (sv_clean_all() > 2)
1074 AvREAL_off(PL_fdpid); /* no surviving entries */
1075 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
1078 #ifdef HAVE_INTERP_INTERN
1082 /* Destruct the global string table. */
1084 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1085 * so that sv_free() won't fail on them.
1086 * Now that the global string table is using a single hunk of memory
1087 * for both HE and HEK, we either need to explicitly unshare it the
1088 * correct way, or actually free things here.
1091 const I32 max = HvMAX(PL_strtab);
1092 HE * const * const array = HvARRAY(PL_strtab);
1093 HE *hent = array[0];
1096 if (hent && ckWARN_d(WARN_INTERNAL)) {
1097 HE * const next = HeNEXT(hent);
1098 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
1099 "Unbalanced string table refcount: (%ld) for \"%s\"",
1100 (long)hent->he_valu.hent_refcount, HeKEY(hent));
1107 hent = array[riter];
1112 HvARRAY(PL_strtab) = 0;
1113 HvTOTALKEYS(PL_strtab) = 0;
1114 HvFILL(PL_strtab) = 0;
1116 SvREFCNT_dec(PL_strtab);
1119 /* free the pointer tables used for cloning */
1120 ptr_table_free(PL_ptr_table);
1121 PL_ptr_table = (PTR_TBL_t*)NULL;
1124 /* free special SVs */
1126 SvREFCNT(&PL_sv_yes) = 0;
1127 sv_clear(&PL_sv_yes);
1128 SvANY(&PL_sv_yes) = NULL;
1129 SvFLAGS(&PL_sv_yes) = 0;
1131 SvREFCNT(&PL_sv_no) = 0;
1132 sv_clear(&PL_sv_no);
1133 SvANY(&PL_sv_no) = NULL;
1134 SvFLAGS(&PL_sv_no) = 0;
1138 for (i=0; i<=2; i++) {
1139 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1140 sv_clear(PERL_DEBUG_PAD(i));
1141 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1142 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1146 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
1147 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
1149 #ifdef DEBUG_LEAKING_SCALARS
1150 if (PL_sv_count != 0) {
1155 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
1156 svend = &sva[SvREFCNT(sva)];
1157 for (sv = sva + 1; sv < svend; ++sv) {
1158 if (SvTYPE(sv) != SVTYPEMASK) {
1159 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
1161 " refcnt=%"UVuf pTHX__FORMAT "\n"
1162 "\tallocated at %s:%d %s %s%s\n",
1163 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1165 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1167 sv->sv_debug_inpad ? "for" : "by",
1168 sv->sv_debug_optype ?
1169 PL_op_name[sv->sv_debug_optype]: "(none)",
1170 sv->sv_debug_cloned ? " (cloned)" : ""
1172 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1173 Perl_dump_sv_child(aTHX_ sv);
1179 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1183 /* Wait for up to 4 seconds for child to terminate.
1184 This seems to be the least effort way of timing out on reaping
1186 struct timeval waitfor = {4, 0};
1187 int sock = PL_dumper_fd;
1191 FD_SET(sock, &rset);
1192 select(sock + 1, &rset, NULL, NULL, &waitfor);
1193 waitpid(child, &status, WNOHANG);
1198 #ifdef DEBUG_LEAKING_SCALARS_ABORT
1204 #ifdef PERL_DEBUG_READONLY_OPS
1210 #if defined(PERLIO_LAYERS)
1211 /* No more IO - including error messages ! */
1212 PerlIO_cleanup(aTHX);
1215 /* sv_undef needs to stay immortal until after PerlIO_cleanup
1216 as currently layers use it rather than NULL as a marker
1217 for no arg - and will try and SvREFCNT_dec it.
1219 SvREFCNT(&PL_sv_undef) = 0;
1220 SvREADONLY_off(&PL_sv_undef);
1222 Safefree(PL_origfilename);
1223 PL_origfilename = NULL;
1224 Safefree(PL_reg_start_tmp);
1225 PL_reg_start_tmp = (char**)NULL;
1226 PL_reg_start_tmpl = 0;
1227 Safefree(PL_reg_curpm);
1228 Safefree(PL_reg_poscache);
1229 free_tied_hv_pool();
1230 Safefree(PL_op_mask);
1231 Safefree(PL_psig_ptr);
1232 PL_psig_ptr = (SV**)NULL;
1233 Safefree(PL_psig_name);
1234 PL_psig_name = (SV**)NULL;
1235 Safefree(PL_bitcount);
1237 Safefree(PL_psig_pend);
1238 PL_psig_pend = (int*)NULL;
1241 PL_tainting = FALSE;
1242 PL_taint_warn = FALSE;
1243 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
1246 DEBUG_P(debprofdump());
1248 #ifdef USE_REENTRANT_API
1249 Perl_reentrant_free(aTHX);
1254 while (PL_regmatch_slab) {
1255 regmatch_slab *s = PL_regmatch_slab;
1256 PL_regmatch_slab = PL_regmatch_slab->next;
1260 /* As the absolutely last thing, free the non-arena SV for mess() */
1263 /* we know that type == SVt_PVMG */
1265 /* it could have accumulated taint magic */
1268 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1269 moremagic = mg->mg_moremagic;
1270 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1272 Safefree(mg->mg_ptr);
1276 /* we know that type >= SVt_PV */
1277 SvPV_free(PL_mess_sv);
1278 Safefree(SvANY(PL_mess_sv));
1279 Safefree(PL_mess_sv);
1286 =for apidoc perl_free
1288 Releases a Perl interpreter. See L<perlembed>.
1298 PERL_ARGS_ASSERT_PERL_FREE;
1300 if (PL_veto_cleanup)
1303 #ifdef PERL_TRACK_MEMPOOL
1306 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1307 * value as we're probably hunting memory leaks then
1309 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
1310 if (!s || atoi(s) == 0) {
1311 const U32 old_debug = PL_debug;
1312 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1313 thread at thread exit. */
1315 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1316 "free this thread's memory\n");
1317 PL_debug &= ~ DEBUG_m_FLAG;
1319 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
1320 safesysfree(sTHX + (char *)(aTHXx->Imemory_debug_header.next));
1321 PL_debug = old_debug;
1326 #if defined(WIN32) || defined(NETWARE)
1327 # if defined(PERL_IMPLICIT_SYS)
1330 void *host = nw_internal_host;
1332 void *host = w32_internal_host;
1334 PerlMem_free(aTHXx);
1336 nw_delete_internal_host(host);
1338 win32_delete_internal_host(host);
1342 PerlMem_free(aTHXx);
1345 PerlMem_free(aTHXx);
1349 #if defined(USE_ITHREADS)
1350 /* provide destructors to clean up the thread key when libperl is unloaded */
1351 #ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1353 #if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
1354 #pragma fini "perl_fini"
1355 #elif defined(__sun) && !defined(__GNUC__)
1356 #pragma fini (perl_fini)
1360 #if defined(__GNUC__)
1361 __attribute__((destructor))
1366 if (PL_curinterp && !PL_veto_cleanup)
1371 #endif /* THREADS */
1374 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
1377 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1378 PL_exitlist[PL_exitlistlen].fn = fn;
1379 PL_exitlist[PL_exitlistlen].ptr = ptr;
1383 #ifdef HAS_PROCSELFEXE
1384 /* This is a function so that we don't hold on to MAXPATHLEN
1385 bytes of stack longer than necessary
1388 S_procself_val(pTHX_ SV *sv, const char *arg0)
1390 char buf[MAXPATHLEN];
1391 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1393 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1394 includes a spurious NUL which will cause $^X to fail in system
1395 or backticks (this will prevent extensions from being built and
1396 many tests from working). readlink is not meant to add a NUL.
1397 Normal readlink works fine.
1399 if (len > 0 && buf[len-1] == '\0') {
1403 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1404 returning the text "unknown" from the readlink rather than the path
1405 to the executable (or returning an error from the readlink). Any valid
1406 path has a '/' in it somewhere, so use that to validate the result.
1407 See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1409 if (len > 0 && memchr(buf, '/', len)) {
1410 sv_setpvn(sv,buf,len);
1416 #endif /* HAS_PROCSELFEXE */
1419 S_set_caret_X(pTHX) {
1421 GV* tmpgv = gv_fetchpvs("\030", GV_ADD|GV_NOTQUAL, SVt_PV); /* $^X */
1423 #ifdef HAS_PROCSELFEXE
1424 S_procself_val(aTHX_ GvSV(tmpgv), PL_origargv[0]);
1427 sv_setpv(GvSVn(tmpgv), os2_execname(aTHX));
1429 sv_setpv(GvSVn(tmpgv),PL_origargv[0]);
1436 =for apidoc perl_parse
1438 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1444 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
1451 PERL_ARGS_ASSERT_PERL_PARSE;
1452 #ifndef MULTIPLICITY
1453 PERL_UNUSED_ARG(my_perl);
1456 #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
1457 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
1458 * This MUST be done before any hash stores or fetches take place.
1459 * If you set PL_rehash_seed (and assumedly also PL_rehash_seed_set)
1460 * yourself, it is your responsibility to provide a good random seed!
1461 * You can also define PERL_HASH_SEED in compile time, see hv.h. */
1462 if (!PL_rehash_seed_set)
1463 PL_rehash_seed = get_hash_seed();
1465 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
1467 if (s && (atoi(s) == 1))
1468 PerlIO_printf(Perl_debug_log, "HASH_SEED = %"UVuf"\n", PL_rehash_seed);
1470 #endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1475 if (PL_origalen != 0) {
1476 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1479 /* Set PL_origalen be the sum of the contiguous argv[]
1480 * elements plus the size of the env in case that it is
1481 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
1482 * as the maximum modifiable length of $0. In the worst case
1483 * the area we are able to modify is limited to the size of
1484 * the original argv[0]. (See below for 'contiguous', though.)
1486 const char *s = NULL;
1489 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
1490 /* Do the mask check only if the args seem like aligned. */
1492 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1494 /* See if all the arguments are contiguous in memory. Note
1495 * that 'contiguous' is a loose term because some platforms
1496 * align the argv[] and the envp[]. If the arguments look
1497 * like non-aligned, assume that they are 'strictly' or
1498 * 'traditionally' contiguous. If the arguments look like
1499 * aligned, we just check that they are within aligned
1500 * PTRSIZE bytes. As long as no system has something bizarre
1501 * like the argv[] interleaved with some other data, we are
1502 * fine. (Did I just evoke Murphy's Law?) --jhi */
1503 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1505 for (i = 1; i < PL_origargc; i++) {
1506 if ((PL_origargv[i] == s + 1
1508 || PL_origargv[i] == s + 2
1513 (PL_origargv[i] > s &&
1515 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1526 #ifndef PERL_USE_SAFE_PUTENV
1527 /* Can we grab env area too to be used as the area for $0? */
1528 if (s && PL_origenviron && !PL_use_safe_putenv) {
1529 if ((PL_origenviron[0] == s + 1)
1532 (PL_origenviron[0] > s &&
1533 PL_origenviron[0] <=
1534 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1537 #ifndef OS2 /* ENVIRON is read by the kernel too. */
1538 s = PL_origenviron[0];
1541 my_setenv("NoNe SuCh", NULL);
1542 /* Force copy of environment. */
1543 for (i = 1; PL_origenviron[i]; i++) {
1544 if (PL_origenviron[i] == s + 1
1547 (PL_origenviron[i] > s &&
1548 PL_origenviron[i] <=
1549 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1552 s = PL_origenviron[i];
1560 #endif /* !defined(PERL_USE_SAFE_PUTENV) */
1562 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
1567 /* Come here if running an undumped a.out. */
1569 PL_origfilename = savepv(argv[0]);
1570 PL_do_undump = FALSE;
1571 cxstack_ix = -1; /* start label stack again */
1573 assert (!PL_tainted);
1575 S_set_caret_X(aTHX);
1577 init_postdump_symbols(argc,argv,env);
1582 op_free(PL_main_root);
1583 PL_main_root = NULL;
1585 PL_main_start = NULL;
1586 SvREFCNT_dec(PL_main_cv);
1590 oldscope = PL_scopestack_ix;
1591 PL_dowarn = G_WARN_OFF;
1596 parse_body(env,xsinit);
1598 call_list(oldscope, PL_unitcheckav);
1600 call_list(oldscope, PL_checkav);
1607 /* my_exit() was called */
1608 while (PL_scopestack_ix > oldscope)
1611 PL_curstash = PL_defstash;
1613 call_list(oldscope, PL_unitcheckav);
1615 call_list(oldscope, PL_checkav);
1619 PerlIO_printf(Perl_error_log, "panic: top_env\n");
1627 #define INCPUSH_ADD_SUB_DIRS 0x01
1628 #define INCPUSH_ADD_OLD_VERS 0x02
1629 #define INCPUSH_NOT_BASEDIR 0x04
1630 #define INCPUSH_CAN_RELOCATE 0x08
1631 #define INCPUSH_UNSHIFT 0x10
1634 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
1638 int argc = PL_origargc;
1639 char **argv = PL_origargv;
1640 const char *scriptname = NULL;
1641 VOL bool dosearch = FALSE;
1644 const char *cddir = NULL;
1645 #ifdef USE_SITECUSTOMIZE
1646 bool minus_f = FALSE;
1648 SV *linestr_sv = newSV_type(SVt_PVIV);
1649 bool add_read_e_script = FALSE;
1651 SvGROW(linestr_sv, 80);
1652 sv_setpvs(linestr_sv,"");
1654 sv = newSVpvs(""); /* first used for -I flags */
1660 for (argc--,argv++; argc > 0; argc--,argv++) {
1661 if (argv[0][0] != '-' || !argv[0][1])
1667 #ifndef PERL_STRICT_CR
1691 if ((s = moreswitches(s)))
1696 CHECK_MALLOC_TOO_LATE_FOR('t');
1697 if( !PL_tainting ) {
1698 PL_taint_warn = TRUE;
1704 CHECK_MALLOC_TOO_LATE_FOR('T');
1706 PL_taint_warn = FALSE;
1714 #ifdef MACOS_TRADITIONAL
1715 /* ignore -e for Dev:Pseudo argument */
1716 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
1719 forbid_setid('e', FALSE);
1721 PL_e_script = newSVpvs("");
1722 add_read_e_script = TRUE;
1725 sv_catpv(PL_e_script, s);
1727 sv_catpv(PL_e_script, argv[1]);
1731 Perl_croak(aTHX_ "No code specified for -%c", c);
1732 sv_catpvs(PL_e_script, "\n");
1736 #ifdef USE_SITECUSTOMIZE
1742 case 'I': /* -I handled both here and in moreswitches() */
1743 forbid_setid('I', FALSE);
1744 if (!*++s && (s=argv[1]) != NULL) {
1748 STRLEN len = strlen(s);
1749 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
1750 sv_catpvs(sv, "-I");
1751 sv_catpvn(sv, s, len);
1755 Perl_croak(aTHX_ "No directory specified for -I");
1758 forbid_setid('S', FALSE);
1766 Perl_av_create_and_push(aTHX_ &PL_preambleav, newSVpvs("use Config;"));
1768 /* Can't do newSVpvs() as that would involve pre-processor
1769 condititionals inside a macro expansion. */
1770 opts_prog = Perl_newSVpv(aTHX_ "$_ = join ' ', sort qw("
1777 # ifdef PERL_DONT_CREATE_GVSV
1778 " PERL_DONT_CREATE_GVSV"
1780 # ifdef PERL_MALLOC_WRAP
1783 # ifdef PERL_MEM_LOG
1786 # ifdef PERL_MEM_LOG_ENV
1789 # ifdef PERL_MEM_LOG_ENV_FD
1790 " PERL_MEM_LOG_ENV_FD"
1792 # ifdef PERL_MEM_LOG_STDERR
1793 " PERL_MEM_LOG_STDERR"
1795 # ifdef PERL_MEM_LOG_TIMESTAMP
1796 " PERL_MEM_LOG_TIMESTAMP"
1798 # ifdef PERL_USE_DEVEL
1801 # ifdef PERL_USE_SAFE_PUTENV
1802 " PERL_USE_SAFE_PUTENV"
1804 # ifdef USE_SITECUSTOMIZE
1805 " USE_SITECUSTOMIZE"
1807 # ifdef USE_FAST_STDIO
1812 sv_catpv(opts_prog, PL_bincompat_options);
1813 /* Terminate the qw(, and then wrap at 76 columns. */
1814 sv_catpvs(opts_prog, "); s/(?=.{53})(.{1,53}) /$1\\n /mg;print Config::myconfig(),");
1816 sv_catpvs(opts_prog,"\"\\nCharacteristics of this PERLSHR image: \\n");
1818 sv_catpvs(opts_prog,"\"\\nCharacteristics of this binary (from libperl): \\n");
1820 sv_catpvs(opts_prog," Compile-time options: $_\\n\",");
1822 #if defined(LOCAL_PATCH_COUNT)
1823 if (LOCAL_PATCH_COUNT > 0) {
1825 sv_catpvs(opts_prog,
1826 "\" Locally applied patches:\\n\",");
1827 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1828 if (PL_localpatches[i])
1829 Perl_sv_catpvf(aTHX_ opts_prog,"q%c\t%s\n%c,",
1830 0, PL_localpatches[i], 0);
1834 Perl_sv_catpvf(aTHX_ opts_prog,
1835 "\" Built under %s\\n",OSNAME);
1838 sv_catpvs(opts_prog,
1839 " Compiled at " __DATE__ " " __TIME__ "\\n\"");
1841 sv_catpvs(opts_prog, " Compiled on " __DATE__ "\\n\"");
1844 sv_catpvs(opts_prog, "; $\"=\"\\n \"; "
1845 "@env = map { \"$_=\\\"$ENV{$_}\\\"\" } "
1846 "sort grep {/^PERL/} keys %ENV; ");
1848 sv_catpvs(opts_prog,
1849 "push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
1851 sv_catpvs(opts_prog,
1852 "print \" \\%ENV:\\n @env\\n\" if @env;"
1853 "print \" \\@INC:\\n @INC\\n\";");
1857 opts_prog = Perl_newSVpvf(aTHX_
1858 "Config::config_vars(qw%c%s%c)",
1862 av_push(PL_preambleav, opts_prog);
1863 /* don't look for script or read stdin */
1864 scriptname = BIT_BUCKET;
1868 PL_doextract = TRUE;
1876 if (!*++s || isSPACE(*s)) {
1880 /* catch use of gnu style long options */
1881 if (strEQ(s, "version")) {
1885 if (strEQ(s, "help")) {
1892 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1903 #ifndef SECURE_INTERNAL_GETENV
1906 (s = PerlEnv_getenv("PERL5OPT")))
1910 if (*s == '-' && *(s+1) == 'T') {
1911 CHECK_MALLOC_TOO_LATE_FOR('T');
1913 PL_taint_warn = FALSE;
1916 char *popt_copy = NULL;
1929 if (!strchr("CDIMUdmtw", *s))
1930 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
1934 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
1935 s = popt_copy + (s - d);
1943 if( !PL_tainting ) {
1944 PL_taint_warn = TRUE;
1955 #ifdef USE_SITECUSTOMIZE
1957 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
1958 Perl_newSVpvf(aTHX_ "BEGIN { do '%s/sitecustomize.pl' }", SITELIB_EXP));
1963 scriptname = argv[0];
1966 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1968 else if (scriptname == NULL) {
1970 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1976 /* Set $^X early so that it can be used for relocatable paths in @INC */
1977 assert (!PL_tainted);
1979 S_set_caret_X(aTHX);
1984 bool suidscript = FALSE;
1986 open_script(scriptname, dosearch, &suidscript, &rsfp);
1988 validate_suid(validarg, scriptname, fdscript, suidscript,
1992 # if defined(SIGCHLD) || defined(SIGCLD)
1995 # define SIGCHLD SIGCLD
1997 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1998 if (sigstate == (Sighandler_t) SIG_IGN) {
1999 if (ckWARN(WARN_SIGNAL))
2000 Perl_warner(aTHX_ packWARN(WARN_SIGNAL),
2001 "Can't ignore signal CHLD, forcing to default");
2002 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2009 #ifdef MACOS_TRADITIONAL
2010 || gMacPerl_AlwaysExtract
2014 /* This will croak if suidscript is true, as -x cannot be used with
2016 forbid_setid('x', suidscript);
2017 /* Hence you can't get here if suidscript is true */
2019 find_beginning(linestr_sv, rsfp);
2020 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2021 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2025 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
2026 CvUNIQUE_on(PL_compcv);
2028 CvPADLIST(PL_compcv) = pad_new(0);
2030 PL_isarev = newHV();
2033 boot_core_UNIVERSAL();
2034 boot_core_xsutils();
2038 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
2040 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC) || defined(SYMBIAN)
2046 # ifdef HAS_SOCKS5_INIT
2047 socks5_init(argv[0]);
2053 init_predump_symbols();
2054 /* init_postdump_symbols not currently designed to be called */
2055 /* more than once (ENV isn't cleared first, for example) */
2056 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
2058 init_postdump_symbols(argc,argv,env);
2060 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2061 * or explicitly in some platforms.
2062 * locale.c:Perl_init_i18nl10n() if the environment
2063 * look like the user wants to use UTF-8. */
2064 #if defined(__SYMBIAN32__)
2065 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2068 /* Requires init_predump_symbols(). */
2069 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
2074 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
2075 * and the default open disciplines. */
2076 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2077 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2079 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2080 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2081 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2083 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2084 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2085 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2087 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2088 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
2089 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2091 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2092 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2095 sv_setpvs(sv, ":utf8\0:utf8");
2097 sv_setpvs(sv, ":utf8\0");
2100 sv_setpvs(sv, "\0:utf8");
2108 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2109 if (strEQ(s, "unsafe"))
2110 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2111 else if (strEQ(s, "safe"))
2112 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2114 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2121 if ((s = PerlEnv_getenv("PERL_XMLDUMP"))) {
2125 PL_xmlfp = PerlIO_stdout();
2127 PL_xmlfp = PerlIO_open(s, "w");
2129 Perl_croak(aTHX_ "Can't open %s", s);
2131 my_setenv("PERL_XMLDUMP", NULL); /* hide from subprocs */
2137 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2138 PL_madskills = atoi(s);
2139 my_setenv("PERL_MADSKILLS", NULL); /* hide from subprocs */
2144 lex_start(linestr_sv, rsfp, TRUE);
2145 PL_subname = newSVpvs("main");
2147 if (add_read_e_script)
2148 filter_add(read_e_script, NULL);
2150 /* now parse the script */
2152 SETERRNO(0,SS_NORMAL);
2153 #ifdef MACOS_TRADITIONAL
2154 if (gMacPerl_SyntaxError = (yyparse() || PL_parser->error_count)) {
2156 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
2158 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
2159 MacPerl_MPWFileName(PL_origfilename));
2163 if (yyparse() || PL_parser->error_count) {
2165 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
2167 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
2172 CopLINE_set(PL_curcop, 0);
2173 PL_curstash = PL_defstash;
2175 SvREFCNT_dec(PL_e_script);
2183 SAVECOPFILE(PL_curcop);
2184 SAVECOPLINE(PL_curcop);
2185 gv_check(PL_defstash);
2194 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2195 dump_mstats("after compilation:");
2205 =for apidoc perl_run
2207 Tells a Perl interpreter to run. See L<perlembed>.
2220 PERL_ARGS_ASSERT_PERL_RUN;
2221 #ifndef MULTIPLICITY
2222 PERL_UNUSED_ARG(my_perl);
2225 oldscope = PL_scopestack_ix;
2233 cxstack_ix = -1; /* start context stack again */
2235 case 0: /* normal completion */
2239 case 2: /* my_exit() */
2240 while (PL_scopestack_ix > oldscope)
2243 PL_curstash = PL_defstash;
2244 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
2245 PL_endav && !PL_minus_c)
2246 call_list(oldscope, PL_endav);
2248 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2249 dump_mstats("after execution: ");
2255 POPSTACK_TO(PL_mainstack);
2258 PerlIO_printf(Perl_error_log, "panic: restartop\n");
2269 S_run_body(pTHX_ I32 oldscope)
2272 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
2273 PL_sawampersand ? "Enabling" : "Omitting"));
2275 if (!PL_restartop) {
2279 exit(0); /* less likely to core dump than my_exit(0) */
2282 DEBUG_x(dump_all());
2285 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
2289 #ifdef MACOS_TRADITIONAL
2290 PerlIO_printf(Perl_error_log, "%s%s syntax OK\n",
2291 (gMacPerl_ErrorFormat ? "# " : ""),
2292 MacPerl_MPWFileName(PL_origfilename));
2294 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
2298 if (PERLDB_SINGLE && PL_DBsingle)
2299 sv_setiv(PL_DBsingle, 1);
2301 call_list(oldscope, PL_initav);
2302 #ifdef PERL_DEBUG_READONLY_OPS
2303 Perl_pending_Slabs_to_ro(aTHX);
2310 PL_op = PL_restartop;
2314 else if (PL_main_start) {
2315 CvDEPTH(PL_main_cv) = 1;
2316 PL_op = PL_main_start;
2324 =head1 SV Manipulation Functions
2326 =for apidoc p||get_sv
2328 Returns the SV of the specified Perl scalar. C<flags> are passed to
2329 C<gv_fetchpv>. If C<GV_ADD> is set and the
2330 Perl variable does not exist then it will be created. If C<flags> is zero
2331 and the variable does not exist then NULL is returned.
2337 Perl_get_sv(pTHX_ const char *name, I32 flags)
2341 PERL_ARGS_ASSERT_GET_SV;
2343 gv = gv_fetchpv(name, flags, SVt_PV);
2350 =head1 Array Manipulation Functions
2352 =for apidoc p||get_av
2354 Returns the AV of the specified Perl array. C<flags> are passed to
2355 C<gv_fetchpv>. If C<GV_ADD> is set and the
2356 Perl variable does not exist then it will be created. If C<flags> is zero
2357 and the variable does not exist then NULL is returned.
2363 Perl_get_av(pTHX_ const char *name, I32 flags)
2365 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
2367 PERL_ARGS_ASSERT_GET_AV;
2377 =head1 Hash Manipulation Functions
2379 =for apidoc p||get_hv
2381 Returns the HV of the specified Perl hash. C<flags> are passed to
2382 C<gv_fetchpv>. If C<GV_ADD> is set and the
2383 Perl variable does not exist then it will be created. If C<flags> is zero
2384 and the variable does not exist then NULL is returned.
2390 Perl_get_hv(pTHX_ const char *name, I32 flags)
2392 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
2394 PERL_ARGS_ASSERT_GET_HV;
2404 =head1 CV Manipulation Functions
2406 =for apidoc p||get_cvn_flags
2408 Returns the CV of the specified Perl subroutine. C<flags> are passed to
2409 C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2410 exist then it will be declared (which has the same effect as saying
2411 C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2412 then NULL is returned.
2414 =for apidoc p||get_cv
2416 Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
2422 Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
2424 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
2425 /* XXX this is probably not what they think they're getting.
2426 * It has the same effect as "sub name;", i.e. just a forward
2429 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2431 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
2432 SV *const sv = newSVpvn_flags(name, len, flags & SVf_UTF8);
2433 return newSUB(start_subparse(FALSE, 0),
2434 newSVOP(OP_CONST, 0, sv),
2442 /* Nothing in core calls this now, but we can't replace it with a macro and
2443 move it to mathoms.c as a macro would evaluate name twice. */
2445 Perl_get_cv(pTHX_ const char *name, I32 flags)
2447 PERL_ARGS_ASSERT_GET_CV;
2449 return get_cvn_flags(name, strlen(name), flags);
2452 /* Be sure to refetch the stack pointer after calling these routines. */
2456 =head1 Callback Functions
2458 =for apidoc p||call_argv
2460 Performs a callback to the specified Perl sub. See L<perlcall>.
2466 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
2468 /* See G_* flags in cop.h */
2469 /* null terminated arg list */
2474 PERL_ARGS_ASSERT_CALL_ARGV;
2479 mXPUSHs(newSVpv(*argv,0));
2484 return call_pv(sub_name, flags);
2488 =for apidoc p||call_pv
2490 Performs a callback to the specified Perl sub. See L<perlcall>.
2496 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
2497 /* name of the subroutine */
2498 /* See G_* flags in cop.h */
2500 PERL_ARGS_ASSERT_CALL_PV;
2502 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
2506 =for apidoc p||call_method
2508 Performs a callback to the specified Perl method. The blessed object must
2509 be on the stack. See L<perlcall>.
2515 Perl_call_method(pTHX_ const char *methname, I32 flags)
2516 /* name of the subroutine */
2517 /* See G_* flags in cop.h */
2519 PERL_ARGS_ASSERT_CALL_METHOD;
2521 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
2524 /* May be called with any of a CV, a GV, or an SV containing the name. */
2526 =for apidoc p||call_sv
2528 Performs a callback to the Perl sub whose name is in the SV. See
2535 Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
2536 /* See G_* flags in cop.h */
2539 LOGOP myop; /* fake syntax tree node */
2544 bool oldcatch = CATCH_GET;
2546 OP* const oldop = PL_op;
2549 PERL_ARGS_ASSERT_CALL_SV;
2551 if (flags & G_DISCARD) {
2555 if (!(flags & G_WANT)) {
2556 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2561 Zero(&myop, 1, LOGOP);
2562 myop.op_next = NULL;
2563 if (!(flags & G_NOARGS))
2564 myop.op_flags |= OPf_STACKED;
2565 myop.op_flags |= OP_GIMME_REVERSE(flags);
2569 EXTEND(PL_stack_sp, 1);
2570 *++PL_stack_sp = sv;
2572 oldscope = PL_scopestack_ix;
2574 if (PERLDB_SUB && PL_curstash != PL_debstash
2575 /* Handle first BEGIN of -d. */
2576 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
2577 /* Try harder, since this may have been a sighandler, thus
2578 * curstash may be meaningless. */
2579 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
2580 && !(flags & G_NODEBUG))
2581 PL_op->op_private |= OPpENTERSUB_DB;
2583 if (flags & G_METHOD) {
2584 Zero(&method_op, 1, UNOP);
2585 method_op.op_next = PL_op;
2586 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2587 method_op.op_type = OP_METHOD;
2588 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
2589 myop.op_type = OP_ENTERSUB;
2590 PL_op = (OP*)&method_op;
2593 if (!(flags & G_EVAL)) {
2595 CALL_BODY_SUB((OP*)&myop);
2596 retval = PL_stack_sp - (PL_stack_base + oldmark);
2597 CATCH_SET(oldcatch);
2600 myop.op_other = (OP*)&myop;
2602 create_eval_scope(flags|G_FAKINGEVAL);
2610 CALL_BODY_SUB((OP*)&myop);
2611 retval = PL_stack_sp - (PL_stack_base + oldmark);
2612 if (!(flags & G_KEEPERR)) {
2620 /* my_exit() was called */
2621 PL_curstash = PL_defstash;
2624 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
2625 Perl_croak(aTHX_ "Callback called exit");
2630 PL_op = PL_restartop;
2634 PL_stack_sp = PL_stack_base + oldmark;
2635 if ((flags & G_WANT) == G_ARRAY)
2639 *++PL_stack_sp = &PL_sv_undef;
2644 if (PL_scopestack_ix > oldscope)
2645 delete_eval_scope();
2649 if (flags & G_DISCARD) {
2650 PL_stack_sp = PL_stack_base + oldmark;
2659 /* Eval a string. The G_EVAL flag is always assumed. */
2662 =for apidoc p||eval_sv
2664 Tells Perl to C<eval> the string in the SV.
2670 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
2672 /* See G_* flags in cop.h */
2676 UNOP myop; /* fake syntax tree node */
2677 VOL I32 oldmark = SP - PL_stack_base;
2680 OP* const oldop = PL_op;
2683 PERL_ARGS_ASSERT_EVAL_SV;
2685 if (flags & G_DISCARD) {
2692 Zero(PL_op, 1, UNOP);
2693 EXTEND(PL_stack_sp, 1);
2694 *++PL_stack_sp = sv;
2696 if (!(flags & G_NOARGS))
2697 myop.op_flags = OPf_STACKED;
2698 myop.op_next = NULL;
2699 myop.op_type = OP_ENTEREVAL;
2700 myop.op_flags |= OP_GIMME_REVERSE(flags);
2701 if (flags & G_KEEPERR)
2702 myop.op_flags |= OPf_SPECIAL;
2704 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2705 * before a PUSHEVAL, which corrupts the stack after a croak */
2706 TAINT_PROPER("eval_sv()");
2712 CALL_BODY_EVAL((OP*)&myop);
2713 retval = PL_stack_sp - (PL_stack_base + oldmark);
2714 if (!(flags & G_KEEPERR)) {
2722 /* my_exit() was called */
2723 PL_curstash = PL_defstash;
2726 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
2727 Perl_croak(aTHX_ "Callback called exit");
2732 PL_op = PL_restartop;
2736 PL_stack_sp = PL_stack_base + oldmark;
2737 if ((flags & G_WANT) == G_ARRAY)
2741 *++PL_stack_sp = &PL_sv_undef;
2747 if (flags & G_DISCARD) {
2748 PL_stack_sp = PL_stack_base + oldmark;
2758 =for apidoc p||eval_pv
2760 Tells Perl to C<eval> the given string and return an SV* result.
2766 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
2770 SV* sv = newSVpv(p, 0);
2772 PERL_ARGS_ASSERT_EVAL_PV;
2774 eval_sv(sv, G_SCALAR);
2781 if (croak_on_error && SvTRUE(ERRSV)) {
2782 Perl_croak(aTHX_ "%s", SvPVx_nolen_const(ERRSV));
2788 /* Require a module. */
2791 =head1 Embedding Functions
2793 =for apidoc p||require_pv
2795 Tells Perl to C<require> the file named by the string argument. It is
2796 analogous to the Perl code C<eval "require '$file'">. It's even
2797 implemented that way; consider using load_module instead.
2802 Perl_require_pv(pTHX_ const char *pv)
2808 PERL_ARGS_ASSERT_REQUIRE_PV;
2810 PUSHSTACKi(PERLSI_REQUIRE);
2812 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2813 eval_sv(sv_2mortal(sv), G_DISCARD);
2819 S_usage(pTHX_ const char *name) /* XXX move this out into a module ? */
2821 /* This message really ought to be max 23 lines.
2822 * Removed -h because the user already knows that option. Others? */
2824 static const char * const usage_msg[] = {
2825 "-0[octal] specify record separator (\\0, if no argument)",
2826 "-a autosplit mode with -n or -p (splits $_ into @F)",
2827 "-C[number/list] enables the listed Unicode features",
2828 "-c check syntax only (runs BEGIN and CHECK blocks)",
2829 "-d[:debugger] run program under debugger",
2830 "-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2831 "-e program one line of program (several -e's allowed, omit programfile)",
2832 "-E program like -e, but enables all optional features",
2833 "-f don't do $sitelib/sitecustomize.pl at startup",
2834 "-F/pattern/ split() pattern for -a switch (//'s are optional)",
2835 "-i[extension] edit <> files in place (makes backup if extension supplied)",
2836 "-Idirectory specify @INC/#include directory (several -I's allowed)",
2837 "-l[octal] enable line ending processing, specifies line terminator",
2838 "-[mM][-]module execute \"use/no module...\" before executing program",
2839 "-n assume \"while (<>) { ... }\" loop around program",
2840 "-p assume loop like -n but print line also, like sed",
2841 "-s enable rudimentary parsing for switches after programfile",
2842 "-S look for programfile using PATH environment variable",
2843 "-t enable tainting warnings",
2844 "-T enable tainting checks",
2845 "-u dump core after parsing program",
2846 "-U allow unsafe operations",
2847 "-v print version, subversion (includes VERY IMPORTANT perl info)",
2848 "-V[:variable] print configuration summary (or a single Config.pm variable)",
2849 "-w enable many useful warnings (RECOMMENDED)",
2850 "-W enable all warnings",
2851 "-x[directory] strip off text before #!perl line and perhaps cd to directory",
2852 "-X disable all warnings",
2856 const char * const *p = usage_msg;
2858 PERL_ARGS_ASSERT_USAGE;
2860 PerlIO_printf(PerlIO_stdout(),
2861 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2864 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
2867 /* convert a string of -D options (or digits) into an int.
2868 * sets *s to point to the char after the options */
2872 Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
2874 static const char * const usage_msgd[] = {
2875 " Debugging flag values: (see also -d)",
2876 " p Tokenizing and parsing (with v, displays parse stack)",
2877 " s Stack snapshots (with v, displays all stacks)",
2878 " l Context (loop) stack processing",
2879 " t Trace execution",
2880 " o Method and overloading resolution",
2881 " c String/numeric conversions",
2882 " P Print profiling info, source file input state",
2883 " m Memory and SV allocation",
2884 " f Format processing",
2885 " r Regular expression parsing and execution",
2886 " x Syntax tree dump",
2887 " u Tainting checks",
2888 " H Hash dump -- usurps values()",
2889 " X Scratchpad allocation",
2892 " R Include reference counts of dumped variables (eg when using -Ds)",
2893 " J Do not s,t,P-debug (Jump over) opcodes within package DB",
2894 " v Verbose: use in conjunction with other flags",
2896 " A Consistency checks on internal structures",
2897 " q quiet - currently only suppresses the 'EXECUTING' message",
2902 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
2905 /* if adding extra options, remember to update DEBUG_MASK */
2906 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAq";
2908 for (; isALNUM(**s); (*s)++) {
2909 const char * const d = strchr(debopts,**s);
2911 i |= 1 << (d - debopts);
2912 else if (ckWARN_d(WARN_DEBUGGING))
2913 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2914 "invalid option -D%c, use -D'' to see choices\n", **s);
2917 else if (isDIGIT(**s)) {
2919 for (; isALNUM(**s); (*s)++) ;
2921 else if (givehelp) {
2922 const char *const *p = usage_msgd;
2923 while (*p) PerlIO_printf(PerlIO_stdout(), "%s\n", *p++);
2926 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
2927 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2928 "-Dp not implemented on this platform\n");
2934 /* This routine handles any switches that can be given during run */
2937 Perl_moreswitches(pTHX_ const char *s)
2941 const char option = *s; /* used to remember option in -m/-M code */
2943 PERL_ARGS_ASSERT_MORESWITCHES;
2951 SvREFCNT_dec(PL_rs);
2952 if (s[1] == 'x' && s[2]) {
2953 const char *e = s+=2;
2959 flags = PERL_SCAN_SILENT_ILLDIGIT;
2960 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
2961 if (s + numlen < e) {
2962 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
2966 PL_rs = newSVpvs("");
2967 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
2968 tmps = (U8*)SvPVX(PL_rs);
2969 uvchr_to_utf8(tmps, rschar);
2970 SvCUR_set(PL_rs, UNISKIP(rschar));
2975 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
2976 if (rschar & ~((U8)~0))
2977 PL_rs = &PL_sv_undef;
2978 else if (!rschar && numlen >= 2)
2979 PL_rs = newSVpvs("");
2981 char ch = (char)rschar;
2982 PL_rs = newSVpvn(&ch, 1);
2985 sv_setsv(get_sv("/", GV_ADD), PL_rs);
2990 PL_unicode = parse_unicode_opts( (const char **)&s );
2991 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
2997 while (*s && !isSPACE(*s)) ++s;
2998 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
3009 forbid_setid('d', FALSE);
3012 /* -dt indicates to the debugger that threads will be used */
3013 if (*s == 't' && !isALNUM(s[1])) {
3015 my_setenv("PERL5DB_THREADED", "1");
3018 /* The following permits -d:Mod to accepts arguments following an =
3019 in the fashion that -MSome::Mod does. */
3020 if (*s == ':' || *s == '=') {
3021 const char *start = ++s;
3022 const char *const end = s + strlen(s);
3023 SV * const sv = newSVpvs("use Devel::");
3025 /* We now allow -d:Module=Foo,Bar */
3026 while(isALNUM(*s) || *s==':') ++s;
3028 sv_catpvn(sv, start, end - start);
3030 sv_catpvn(sv, start, s-start);
3031 /* Don't use NUL as q// delimiter here, this string goes in the
3033 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
3036 my_setenv("PERL5DB", SvPV_nolen_const(sv));
3040 PL_perldb = PERLDB_ALL;
3047 forbid_setid('D', FALSE);
3049 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
3050 #else /* !DEBUGGING */
3051 if (ckWARN_d(WARN_DEBUGGING))
3052 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3053 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
3054 for (s++; isALNUM(*s); s++) ;
3059 usage(PL_origargv[0]);
3062 Safefree(PL_inplace);
3063 #if defined(__CYGWIN__) /* do backup extension automagically */
3064 if (*(s+1) == '\0') {
3065 PL_inplace = savepvs(".bak");
3068 #endif /* __CYGWIN__ */
3070 const char * const start = ++s;
3071 while (*s && !isSPACE(*s))
3074 PL_inplace = savepvn(start, s - start);
3078 if (*s == '-') /* Additional switches on #! line. */
3082 case 'I': /* -I handled both here and in parse_body() */
3083 forbid_setid('I', FALSE);
3085 while (*s && isSPACE(*s))
3090 /* ignore trailing spaces (possibly followed by other switches) */
3092 for (e = p; *e && !isSPACE(*e); e++) ;
3096 } while (*p && *p != '-');
3098 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
3104 Perl_croak(aTHX_ "No directory specified for -I");
3110 SvREFCNT_dec(PL_ors_sv);
3116 PL_ors_sv = newSVpvs("\n");
3117 numlen = 3 + (*s == '0');
3118 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
3122 if (RsPARA(PL_rs)) {
3123 PL_ors_sv = newSVpvs("\n\n");
3126 PL_ors_sv = newSVsv(PL_rs);
3131 forbid_setid('M', FALSE); /* XXX ? */
3134 forbid_setid('m', FALSE); /* XXX ? */
3139 const char *use = "use ";
3141 /* -M-foo == 'no foo' */
3142 /* Leading space on " no " is deliberate, to make both
3143 possibilities the same length. */
3144 if (*s == '-') { use = " no "; ++s; }
3145 sv = newSVpvn(use,4);
3147 /* We allow -M'Module qw(Foo Bar)' */
3148 while(isALNUM(*s) || *s==':') {
3157 Perl_croak(aTHX_ "Module name required with -%c option",
3160 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3161 "contains single ':'",
3162 (int)(s - start), start, option);
3163 end = s + strlen(s);
3165 sv_catpvn(sv, start, end - start);
3166 if (option == 'm') {
3168 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
3169 sv_catpvs( sv, " ()");
3172 sv_catpvn(sv, start, s-start);
3173 /* Use NUL as q''-delimiter. */
3174 sv_catpvs(sv, " split(/,/,q\0");
3176 sv_catpvn(sv, s, end - s);
3177 sv_catpvs(sv, "\0)");
3180 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
3183 Perl_croak(aTHX_ "Missing argument to -%c", option);
3194 forbid_setid('s', FALSE);
3195 PL_doswitches = TRUE;
3209 #ifdef MACOS_TRADITIONAL
3210 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
3212 PL_do_undump = TRUE;
3220 if (!sv_derived_from(PL_patchlevel, "version"))
3221 upg_version(PL_patchlevel, TRUE);
3224 SV* level= vstringify(PL_patchlevel);
3225 #ifdef PERL_PATCHNUM
3226 # ifdef PERL_GIT_UNCOMMITTED_CHANGES
3227 SV *num = newSVpvs(PERL_PATCHNUM "*");
3229 SV *num = newSVpvs(PERL_PATCHNUM);
3232 if (sv_len(num)>=sv_len(level) && strnEQ(SvPV_nolen(num),SvPV_nolen(level),sv_len(level))) {
3233 SvREFCNT_dec(level);
3236 Perl_sv_catpvf(aTHX_ level, " (%"SVf")", num);
3240 PerlIO_printf(PerlIO_stdout(),
3241 "\nThis is perl, %"SVf
3245 SvREFCNT_dec(level);
3248 /* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3249 PerlIO_printf(PerlIO_stdout(),
3250 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
3251 SVfARG(vstringify(PL_patchlevel))));
3252 PerlIO_printf(PerlIO_stdout(),
3253 Perl_form(aTHX_ " built under %s at %s %s\n",
3254 OSNAME, __DATE__, __TIME__));
3255 PerlIO_printf(PerlIO_stdout(),
3256 Perl_form(aTHX_ " OS Specific Release: %s\n",
3259 #if defined(LOCAL_PATCH_COUNT)
3260 if (LOCAL_PATCH_COUNT > 0)
3261 PerlIO_printf(PerlIO_stdout(),
3262 "\n(with %d registered patch%s, "
3263 "see perl -V for more detail)",
3265 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
3268 PerlIO_printf(PerlIO_stdout(),
3269 "\n\nCopyright 1987-2009, Larry Wall\n");
3270 #ifdef MACOS_TRADITIONAL
3271 PerlIO_printf(PerlIO_stdout(),
3272 "\nMac OS port Copyright 1991-2002, Matthias Neeracher;\n"
3273 "maintained by Chris Nandor\n");
3276 PerlIO_printf(PerlIO_stdout(),
3277 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
3280 PerlIO_printf(PerlIO_stdout(),
3281 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3282 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
3285 PerlIO_printf(PerlIO_stdout(),
3286 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
3287 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
3290 PerlIO_printf(PerlIO_stdout(),
3291 "atariST series port, ++jrb bammi@cadence.com\n");
3294 PerlIO_printf(PerlIO_stdout(),
3295 "BeOS port Copyright Tom Spindler, 1997-1999\n");
3298 PerlIO_printf(PerlIO_stdout(),
3299 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n");
3302 PerlIO_printf(PerlIO_stdout(),
3303 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
3306 PerlIO_printf(PerlIO_stdout(),
3307 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
3310 PerlIO_printf(PerlIO_stdout(),
3311 "VM/ESA port by Neale Ferguson, 1998-1999\n");
3314 PerlIO_printf(PerlIO_stdout(),
3315 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
3318 PerlIO_printf(PerlIO_stdout(),
3319 "MiNT port by Guido Flohr, 1997-1999\n");
3322 PerlIO_printf(PerlIO_stdout(),
3323 "EPOC port by Olaf Flebbe, 1999-2002\n");
3326 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
3327 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
3330 #ifdef __SYMBIAN32__
3331 PerlIO_printf(PerlIO_stdout(),
3332 "Symbian port by Nokia, 2004-2005\n");
3334 #ifdef BINARY_BUILD_NOTICE
3335 BINARY_BUILD_NOTICE;
3337 PerlIO_printf(PerlIO_stdout(),
3339 Perl may be copied only under the terms of either the Artistic License or the\n\
3340 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
3341 Complete documentation for Perl, including FAQ lists, should be found on\n\
3342 this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
3343 Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
3346 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
3347 PL_dowarn |= G_WARN_ON;
3352 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
3353 if (!specialWARN(PL_compiling.cop_warnings))
3354 PerlMemShared_free(PL_compiling.cop_warnings);
3355 PL_compiling.cop_warnings = pWARN_ALL ;
3359 PL_dowarn = G_WARN_ALL_OFF;
3360 if (!specialWARN(PL_compiling.cop_warnings))
3361 PerlMemShared_free(PL_compiling.cop_warnings);
3362 PL_compiling.cop_warnings = pWARN_NONE ;
3369 if (s[0] == '-') /* Additional switches on #! line. */
3374 #if defined(WIN32) || !defined(PERL_STRICT_CR)
3380 #ifdef ALTERNATE_SHEBANG
3381 case 'S': /* OS/2 needs -S on "extproc" line. */
3385 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
3390 /* compliments of Tom Christiansen */
3392 /* unexec() can be found in the Gnu emacs distribution */
3393 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
3396 Perl_my_unexec(pTHX)
3398 PERL_UNUSED_CONTEXT;
3400 SV * prog = newSVpv(BIN_EXP, 0);
3401 SV * file = newSVpv(PL_origfilename, 0);
3405 sv_catpvs(prog, "/perl");
3406 sv_catpvs(file, ".perldump");
3408 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3409 /* unexec prints msg to stderr in case of failure */
3410 PerlProc_exit(status);
3413 # include <lib$routines.h>
3414 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
3415 # elif defined(WIN32) || defined(__CYGWIN__)
3416 Perl_croak(aTHX_ "dump is not supported");
3418 ABORT(); /* for use with undump */
3423 /* initialize curinterp */
3429 # define PERLVAR(var,type)
3430 # define PERLVARA(var,n,type)
3431 # if defined(PERL_IMPLICIT_CONTEXT)
3432 # define PERLVARI(var,type,init) aTHX->var = init;
3433 # define PERLVARIC(var,type,init) aTHX->var = init;
3435 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
3436 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
3438 # include "intrpvar.h"
3444 # define PERLVAR(var,type)
3445 # define PERLVARA(var,n,type)
3446 # define PERLVARI(var,type,init) PL_##var = init;
3447 # define PERLVARIC(var,type,init) PL_##var = init;
3448 # include "intrpvar.h"
3455 /* As these are inside a structure, PERLVARI isn't capable of initialising
3457 PL_reg_oldcurpm = PL_reg_curpm = NULL;
3458 PL_reg_poscache = PL_reg_starttry = NULL;
3462 S_init_main_stash(pTHX)
3467 PL_curstash = PL_defstash = newHV();
3468 /* We know that the string "main" will be in the global shared string
3469 table, so it's a small saving to use it rather than allocate another
3471 PL_curstname = newSVpvs_share("main");
3472 gv = gv_fetchpvs("main::", GV_ADD|GV_NOTQUAL, SVt_PVHV);
3473 /* If we hadn't caused another reference to "main" to be in the shared
3474 string table above, then it would be worth reordering these two,
3475 because otherwise all we do is delete "main" from it as a consequence
3476 of the SvREFCNT_dec, only to add it again with hv_name_set */
3477 SvREFCNT_dec(GvHV(gv));
3478 hv_name_set(PL_defstash, "main", 4, 0);
3479 GvHV(gv) = MUTABLE_HV(SvREFCNT_inc_simple(PL_defstash));
3481 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpvs("INC", GV_ADD|GV_NOTQUAL,
3483 SvREFCNT_inc_simple_void(PL_incgv); /* Don't allow it to be freed */
3484 GvMULTI_on(PL_incgv);
3485 PL_hintgv = gv_fetchpvs("\010", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^H */
3486 GvMULTI_on(PL_hintgv);
3487 PL_defgv = gv_fetchpvs("_", GV_ADD|GV_NOTQUAL, SVt_PVAV);
3488 SvREFCNT_inc_simple_void(PL_defgv);
3489 PL_errgv = gv_HVadd(gv_fetchpvs("@", GV_ADD|GV_NOTQUAL, SVt_PV));
3490 SvREFCNT_inc_simple_void(PL_errgv);
3491 GvMULTI_on(PL_errgv);
3492 PL_replgv = gv_fetchpvs("\022", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^R */
3493 GvMULTI_on(PL_replgv);
3494 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
3495 #ifdef PERL_DONT_CREATE_GVSV
3498 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
3500 PL_curstash = PL_defstash;
3501 CopSTASH_set(&PL_compiling, PL_defstash);
3502 PL_debstash = GvHV(gv_fetchpvs("DB::", GV_ADDMULTI, SVt_PVHV));
3503 PL_globalstash = GvHV(gv_fetchpvs("CORE::GLOBAL::", GV_ADDMULTI,
3505 /* We must init $/ before switches are processed. */
3506 sv_setpvs(get_sv("/", GV_ADD), "\n");
3510 S_open_script(pTHX_ const char *scriptname, bool dosearch,
3511 bool *suidscript, PerlIO **rsfpp)
3516 PERL_ARGS_ASSERT_OPEN_SCRIPT;
3519 PL_origfilename = savepvs("-e");
3522 /* if find_script() returns, it returns a malloc()-ed value */
3523 scriptname = PL_origfilename = find_script(scriptname, dosearch, NULL, 1);
3525 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
3526 const char *s = scriptname + 8;
3532 * Tell apart "normal" usage of fdscript, e.g.
3533 * with bash on FreeBSD:
3534 * perl <( echo '#!perl -DA'; echo 'print "$0\n"')
3535 * from usage in suidperl.
3536 * Does any "normal" usage leave garbage after the number???
3537 * Is it a mistake to use a similar /dev/fd/ construct for
3542 * Be supersafe and do some sanity-checks.
3543 * Still, can we be sure we got the right thing?
3546 Perl_croak(aTHX_ "Wrong syntax (suid) fd script name \"%s\"\n", s);
3549 Perl_croak(aTHX_ "Missing (suid) fd script name\n");
3551 scriptname = savepv(s + 1);
3552 Safefree(PL_origfilename);
3553 PL_origfilename = (char *)scriptname;
3558 CopFILE_free(PL_curcop);
3559 CopFILE_set(PL_curcop, PL_origfilename);
3560 if (*PL_origfilename == '-' && PL_origfilename[1] == '\0')
3561 scriptname = (char *)"";
3562 if (fdscript >= 0) {
3563 *rsfpp = PerlIO_fdopen(fdscript,PERL_SCRIPT_MODE);
3564 # if defined(HAS_FCNTL) && defined(F_SETFD)
3566 /* ensure close-on-exec */
3567 fcntl(PerlIO_fileno(*rsfpp),F_SETFD,1);
3570 else if (!*scriptname) {
3571 forbid_setid(0, *suidscript);
3572 *rsfpp = PerlIO_stdin();
3575 #ifdef FAKE_BIT_BUCKET
3576 /* This hack allows one not to have /dev/null (or BIT_BUCKET as it
3577 * is called) and still have the "-e" work. (Believe it or not,
3578 * a /dev/null is required for the "-e" to work because source
3579 * filter magic is used to implement it. ) This is *not* a general
3580 * replacement for a /dev/null. What we do here is create a temp
3581 * file (an empty file), open up that as the script, and then
3582 * immediately close and unlink it. Close enough for jazz. */
3583 #define FAKE_BIT_BUCKET_PREFIX "/tmp/perlnull-"
3584 #define FAKE_BIT_BUCKET_SUFFIX "XXXXXXXX"
3585 #define FAKE_BIT_BUCKET_TEMPLATE FAKE_BIT_BUCKET_PREFIX FAKE_BIT_BUCKET_SUFFIX
3586 char tmpname[sizeof(FAKE_BIT_BUCKET_TEMPLATE)] = {
3587 FAKE_BIT_BUCKET_TEMPLATE
3589 const char * const err = "Failed to create a fake bit bucket";
3590 if (strEQ(scriptname, BIT_BUCKET)) {
3591 #ifdef HAS_MKSTEMP /* Hopefully mkstemp() is safe here. */
3592 int tmpfd = mkstemp(tmpname);
3594 scriptname = tmpname;
3597 Perl_croak(aTHX_ err);
3600 scriptname = mktemp(tmpname);
3602 Perl_croak(aTHX_ err);
3607 *rsfpp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
3608 #ifdef FAKE_BIT_BUCKET
3609 if (memEQ(scriptname, FAKE_BIT_BUCKET_PREFIX,
3610 sizeof(FAKE_BIT_BUCKET_PREFIX) - 1)
3611 && strlen(scriptname) == sizeof(tmpname) - 1) {
3614 scriptname = BIT_BUCKET;
3616 # if defined(HAS_FCNTL) && defined(F_SETFD)
3618 /* ensure close-on-exec */
3619 fcntl(PerlIO_fileno(*rsfpp),F_SETFD,1);
3623 /* PSz 16 Sep 03 Keep neat error message */
3625 Perl_croak(aTHX_ "Can't open "BIT_BUCKET": %s\n", Strerror(errno));
3627 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3628 CopFILE(PL_curcop), Strerror(errno));
3634 * I_SYSSTATVFS HAS_FSTATVFS
3636 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
3637 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
3638 * here so that metaconfig picks them up. */
3641 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
3642 /* Don't even need this function. */
3645 S_validate_suid(pTHX_ PerlIO *rsfp)
3647 PERL_ARGS_ASSERT_VALIDATE_SUID;
3649 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
3652 PerlLIO_fstat(PerlIO_fileno(rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3653 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3655 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3658 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3659 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3660 /* not set-id, must be wrapped */
3663 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3666 S_find_beginning(pTHX_ SV* linestr_sv, PerlIO *rsfp)
3670 register const char *s2;
3671 #ifdef MACOS_TRADITIONAL
3675 PERL_ARGS_ASSERT_FIND_BEGINNING;
3677 /* skip forward in input to the real script? */
3679 #ifdef MACOS_TRADITIONAL
3680 /* Since the Mac OS does not honor #! arguments for us, we do it ourselves */
3682 while (PL_doextract || gMacPerl_AlwaysExtract) {
3683 if ((s = sv_gets(linestr_sv, rsfp, 0)) == NULL) {
3684 if (!gMacPerl_AlwaysExtract)
3685 Perl_croak(aTHX_ "No Perl script found in input\n");
3687 if (PL_doextract) /* require explicit override ? */
3688 if (!OverrideExtract(PL_origfilename))
3689 Perl_croak(aTHX_ "User aborted script\n");
3691 PL_doextract = FALSE;
3693 /* Pater peccavi, file does not have #! */
3694 PerlIO_rewind(rsfp);
3699 while (PL_doextract) {
3700 if ((s = sv_gets(linestr_sv, rsfp, 0)) == NULL)
3701 Perl_croak(aTHX_ "No Perl script found in input\n");
3704 if (*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))) {
3705 PerlIO_ungetc(rsfp, '\n'); /* to keep line count right */
3706 PL_doextract = FALSE;
3707 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3709 while (*s == ' ' || *s == '\t') s++;
3711 while (isDIGIT(s2[-1]) || s2[-1] == '-' || s2[-1] == '.'
3712 || s2[-1] == '_') s2--;
3713 if (strnEQ(s2-4,"perl",4))
3714 while ((s = moreswitches(s)))
3717 #ifdef MACOS_TRADITIONAL
3718 /* We are always searching for the #!perl line in MacPerl,
3719 * so if we find it, still keep the line count correct
3720 * by counting lines we already skipped over
3722 for (; maclines > 0 ; maclines--)
3723 PerlIO_ungetc(rsfp, '\n');
3727 /* gMacPerl_AlwaysExtract is false in MPW tool */
3728 } else if (gMacPerl_AlwaysExtract) {
3740 PL_uid = PerlProc_getuid();
3741 PL_euid = PerlProc_geteuid();
3742 PL_gid = PerlProc_getgid();
3743 PL_egid = PerlProc_getegid();
3745 PL_uid |= PL_gid << 16;
3746 PL_euid |= PL_egid << 16;
3748 /* Should not happen: */
3749 CHECK_MALLOC_TAINT(PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3750 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3753 * Should go by suidscript, not uid!=euid: why disallow
3754 * system("ls") in scripts run from setuid things?
3755 * Or, is this run before we check arguments and set suidscript?
3756 * What about SETUID_SCRIPTS_ARE_SECURE_NOW: could we use fdscript then?
3757 * (We never have suidscript, can we be sure to have fdscript?)
3758 * Or must then go by UID checks? See comments in forbid_setid also.
3762 /* This is used very early in the lifetime of the program,
3763 * before even the options are parsed, so PL_tainting has
3764 * not been initialized properly. */
3766 Perl_doing_taint(int argc, char *argv[], char *envp[])
3768 #ifndef PERL_IMPLICIT_SYS
3769 /* If we have PERL_IMPLICIT_SYS we can't call getuid() et alia
3770 * before we have an interpreter-- and the whole point of this
3771 * function is to be called at such an early stage. If you are on
3772 * a system with PERL_IMPLICIT_SYS but you do have a concept of
3773 * "tainted because running with altered effective ids', you'll
3774 * have to add your own checks somewhere in here. The two most
3775 * known samples of 'implicitness' are Win32 and NetWare, neither
3776 * of which has much of concept of 'uids'. */
3777 int uid = PerlProc_getuid();
3778 int euid = PerlProc_geteuid();
3779 int gid = PerlProc_getgid();
3780 int egid = PerlProc_getegid();
3787 if (uid && (euid != uid || egid != gid))
3789 #endif /* !PERL_IMPLICIT_SYS */
3790 /* This is a really primitive check; environment gets ignored only
3791 * if -T are the first chars together; otherwise one gets
3792 * "Too late" message. */
3793 if ( argc > 1 && argv[1][0] == '-'
3794 && (argv[1][1] == 't' || argv[1][1] == 'T') )
3799 /* Passing the flag as a single char rather than a string is a slight space
3800 optimisation. The only message that isn't /^-.$/ is
3801 "program input from stdin", which is substituted in place of '\0', which
3802 could never be a command line flag. */
3804 S_forbid_setid(pTHX_ const char flag, const bool suidscript) /* g */
3807 char string[3] = "-x";
3808 const char *message = "program input from stdin";
3815 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
3816 if (PL_euid != PL_uid)
3817 Perl_croak(aTHX_ "No %s allowed while running setuid", message);
3818 if (PL_egid != PL_gid)
3819 Perl_croak(aTHX_ "No %s allowed while running setgid", message);
3820 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3822 Perl_croak(aTHX_ "No %s allowed with (suid) fdscript", message);
3826 Perl_init_debugger(pTHX)
3829 HV * const ostash = PL_curstash;
3831 PL_curstash = PL_debstash;
3832 PL_dbargs = GvAV(gv_AVadd((gv_fetchpvs("DB::args", GV_ADDMULTI,
3834 AvREAL_off(PL_dbargs);
3835 PL_DBgv = gv_fetchpvs("DB::DB", GV_ADDMULTI, SVt_PVGV);
3836 PL_DBline = gv_fetchpvs("DB::dbline", GV_ADDMULTI, SVt_PVAV);
3837 PL_DBsub = gv_HVadd(gv_fetchpvs("DB::sub", GV_ADDMULTI, SVt_PVHV));
3838 PL_DBsingle = GvSV((gv_fetchpvs("DB::single", GV_ADDMULTI, SVt_PV)));
3839 sv_setiv(PL_DBsingle, 0);
3840 PL_DBtrace = GvSV((gv_fetchpvs("DB::trace", GV_ADDMULTI, SVt_PV)));
3841 sv_setiv(PL_DBtrace, 0);
3842 PL_DBsignal = GvSV((gv_fetchpvs("DB::signal", GV_ADDMULTI, SVt_PV)));
3843 sv_setiv(PL_DBsignal, 0);
3844 PL_curstash = ostash;
3847 #ifndef STRESS_REALLOC
3848 #define REASONABLE(size) (size)
3850 #define REASONABLE(size) (1) /* unreasonable */
3854 Perl_init_stacks(pTHX)
3857 /* start with 128-item stack and 8K cxstack */
3858 PL_curstackinfo = new_stackinfo(REASONABLE(128),
3859 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3860 PL_curstackinfo->si_type = PERLSI_MAIN;
3861 PL_curstack = PL_curstackinfo->si_stack;
3862 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
3864 PL_stack_base = AvARRAY(PL_curstack);
3865 PL_stack_sp = PL_stack_base;
3866 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
3868 Newx(PL_tmps_stack,REASONABLE(128),SV*);
3871 PL_tmps_max = REASONABLE(128);
3873 Newx(PL_markstack,REASONABLE(32),I32);
3874 PL_markstack_ptr = PL_markstack;
3875 PL_markstack_max = PL_markstack + REASONABLE(32);
3879 Newx(PL_scopestack,REASONABLE(32),I32);
3880 PL_scopestack_ix = 0;
3881 PL_scopestack_max = REASONABLE(32);
3883 Newx(PL_savestack,REASONABLE(128),ANY);
3884 PL_savestack_ix = 0;
3885 PL_savestack_max = REASONABLE(128);
3894 while (PL_curstackinfo->si_next)
3895 PL_curstackinfo = PL_curstackinfo->si_next;
3896 while (PL_curstackinfo) {
3897 PERL_SI *p = PL_curstackinfo->si_prev;
3898 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3899 Safefree(PL_curstackinfo->si_cxstack);
3900 Safefree(PL_curstackinfo);
3901 PL_curstackinfo = p;
3903 Safefree(PL_tmps_stack);
3904 Safefree(PL_markstack);
3905 Safefree(PL_scopestack);
3906 Safefree(PL_savestack);
3911 S_init_predump_symbols(pTHX)
3917 sv_setpvs(get_sv("\"", GV_ADD), " ");
3918 PL_ofsgv = (GV*)SvREFCNT_inc(gv_fetchpvs(",", GV_ADD|GV_NOTQUAL, SVt_PV));
3920 PL_stdingv = gv_fetchpvs("STDIN", GV_ADD|GV_NOTQUAL, SVt_PVIO);
3921 GvMULTI_on(PL_stdingv);
3922 io = GvIOp(PL_stdingv);
3923 IoTYPE(io) = IoTYPE_RDONLY;
3924 IoIFP(io) = PerlIO_stdin();
3925 tmpgv = gv_fetchpvs("stdin", GV_ADD|GV_NOTQUAL, SVt_PV);
3927 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
3929 tmpgv = gv_fetchpvs("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
3932 IoTYPE(io) = IoTYPE_WRONLY;
3933 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
3935 tmpgv = gv_fetchpvs("stdout", GV_ADD|GV_NOTQUAL, SVt_PV);
3937 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
3939 PL_stderrgv = gv_fetchpvs("STDERR", GV_ADD|GV_NOTQUAL, SVt_PVIO);
3940 GvMULTI_on(PL_stderrgv);
3941 io = GvIOp(PL_stderrgv);
3942 IoTYPE(io) = IoTYPE_WRONLY;
3943 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
3944 tmpgv = gv_fetchpvs("stderr", GV_ADD|GV_NOTQUAL, SVt_PV);
3946 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
3948 PL_statname = newSV(0); /* last filename we did stat on */
3950 Safefree(PL_osname);
3951 PL_osname = savepv(OSNAME);
3955 Perl_init_argv_symbols(pTHX_ register int argc, register char **argv)
3959 PERL_ARGS_ASSERT_INIT_ARGV_SYMBOLS;
3961 argc--,argv++; /* skip name of script */
3962 if (PL_doswitches) {
3963 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3967 if (argv[0][1] == '-' && !argv[0][2]) {
3971 if ((s = strchr(argv[0], '='))) {
3972 const char *const start_name = argv[0] + 1;
3973 sv_setpv(GvSV(gv_fetchpvn_flags(start_name, s - start_name,
3974 TRUE, SVt_PV)), s + 1);
3977 sv_setiv(GvSV(gv_fetchpv(argv[0]+1, GV_ADD, SVt_PV)),1);
3980 if ((PL_argvgv = gv_fetchpvs("ARGV", GV_ADD|GV_NOTQUAL, SVt_PVAV))) {
3981 GvMULTI_on(PL_argvgv);
3982 (void)gv_AVadd(PL_argvgv);
3983 av_clear(GvAVn(PL_argvgv));
3984 for (; argc > 0; argc--,argv++) {
3985 SV * const sv = newSVpv(argv[0],0);
3986 av_push(GvAVn(PL_argvgv),sv);
3987 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
3988 if (PL_unicode & PERL_UNICODE_ARGV_FLAG)
3991 if (PL_unicode & PERL_UNICODE_WIDESYSCALLS_FLAG) /* Sarathy? */
3992 (void)sv_utf8_decode(sv);
3998 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
4003 PERL_ARGS_ASSERT_INIT_POSTDUMP_SYMBOLS;
4005 PL_toptarget = newSV_type(SVt_PVFM);
4006 sv_setpvs(PL_toptarget, "");
4007 PL_bodytarget = newSV_type(SVt_PVFM);
4008 sv_setpvs(PL_bodytarget, "");
4009 PL_formtarget = PL_bodytarget;
4013 init_argv_symbols(argc,argv);
4015 if ((tmpgv = gv_fetchpvs("0", GV_ADD|GV_NOTQUAL, SVt_PV))) {
4016 #ifdef MACOS_TRADITIONAL
4017 /* $0 is not majick on a Mac */
4018 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
4020 sv_setpv(GvSV(tmpgv),PL_origfilename);
4022 GV * const gv = gv_fetchpv("0", GV_ADD, SVt_PV);
4024 sv_magic(GvSV(gv), MUTABLE_SV(gv), PERL_MAGIC_sv, "0", 1);
4028 if ((PL_envgv = gv_fetchpvs("ENV", GV_ADD|GV_NOTQUAL, SVt_PVHV))) {
4030 bool env_is_not_environ;
4031 GvMULTI_on(PL_envgv);
4032 hv = GvHVn(PL_envgv);
4033 hv_magic(hv, NULL, PERL_MAGIC_env);
4035 #ifdef USE_ENVIRON_ARRAY
4036 /* Note that if the supplied env parameter is actually a copy
4037 of the global environ then it may now point to free'd memory
4038 if the environment has been modified since. To avoid this
4039 problem we treat env==NULL as meaning 'use the default'
4043 env_is_not_environ = env != environ;
4044 if (env_is_not_environ
4045 # ifdef USE_ITHREADS
4046 && PL_curinterp == aTHX
4055 for (; *env; env++) {
4058 if (!(s = strchr(old_var,'=')) || s == old_var)
4061 #if defined(MSDOS) && !defined(DJGPP)
4063 (void)strupr(old_var);
4066 sv = newSVpv(s+1, 0);
4067 (void)hv_store(hv, old_var, s - old_var, sv, 0);
4068 if (env_is_not_environ)
4072 #endif /* USE_ENVIRON_ARRAY */
4073 #endif /* !PERL_MICRO */
4076 if ((tmpgv = gv_fetchpvs("$", GV_ADD|GV_NOTQUAL, SVt_PV))) {
4077 SvREADONLY_off(GvSV(tmpgv));
4078 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
4079 SvREADONLY_on(GvSV(tmpgv));
4081 #ifdef THREADS_HAVE_PIDS
4082 PL_ppid = (IV)getppid();
4085 /* touch @F array to prevent spurious warnings 20020415 MJD */
4087 (void) get_av("main::F", GV_ADD | GV_ADDMULTI);
4092 S_init_perllib(pTHX)
4096 const char *perl5lib;
4105 perl5lib = PerlEnv_getenv("PERL5LIB");
4107 * It isn't possible to delete an environment variable with
4108 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4109 * case we treat PERL5LIB as undefined if it has a zero-length value.
4111 #if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
4112 if (perl5lib && *perl5lib != '\0')
4116 incpush_use_sep(perl5lib, 0, INCPUSH_ADD_SUB_DIRS);
4118 s = PerlEnv_getenv("PERLLIB");
4120 incpush_use_sep(s, 0, 0);
4123 /* Treat PERL5?LIB as a possible search list logical name -- the
4124 * "natural" VMS idiom for a Unix path string. We allow each
4125 * element to be a set of |-separated directories for compatibility.
4129 if (my_trnlnm("PERL5LIB",buf,0))
4131 incpush_use_sep(buf, 0, INCPUSH_ADD_SUB_DIRS);
4132 } while (my_trnlnm("PERL5LIB",buf,++idx));
4134 while (my_trnlnm("PERLLIB",buf,idx++))
4135 incpush_use_sep(buf, 0, 0);
4139 /* Use the ~-expanded versions of APPLLIB (undocumented),
4140 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
4143 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP), INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4146 #ifdef MACOS_TRADITIONAL
4149 SV * privdir = newSV(0);
4150 char * macperl = PerlEnv_getenv("MACPERL");
4156 S_incpush_use_sep(aTHX_ STR_WITH_LEN(ARCHLIB_EXP), INCPUSH_CAN_RELOCATE);
4159 Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl);
4160 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
4161 incpush_use_sep(SvPVX(privdir), SvCUR(privdir), INCPUSH_ADD_SUB_DIRS);
4162 Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl);
4163 if (PerlLIO_stat(SvPVX(privdir), SvCUR(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
4164 incpush_use_sep(SvPVX(privdir), SvCUR(privdir), INCPUSH_ADD_SUB_DIRS);
4166 SvREFCNT_dec(privdir);
4168 S_incpush(aTHX_ STR_WITH_LEN(":"), 0);
4172 /* sitearch is always relative to sitelib on Windows for
4173 * DLL-based path intuition to work correctly */
4174 # if !defined(WIN32)
4175 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITEARCH_EXP), INCPUSH_CAN_RELOCATE);
4181 /* this picks up sitearch as well */
4182 s = win32_get_sitelib(PERL_FS_VERSION, &len);
4184 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4186 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_EXP), INCPUSH_CAN_RELOCATE);
4190 #if defined(SITELIB_STEM) && defined(PERL_INC_VERSION_LIST)
4191 /* Search for version-specific dirs below here */
4192 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_STEM), INCPUSH_CAN_RELOCATE);
4195 #ifdef PERL_VENDORARCH_EXP
4196 /* vendorarch is always relative to vendorlib on Windows for
4197 * DLL-based path intuition to work correctly */
4198 # if !defined(WIN32)
4199 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORARCH_EXP), INCPUSH_CAN_RELOCATE);
4203 #ifdef PERL_VENDORLIB_EXP
4205 /* this picks up vendorarch as well */
4206 s = win32_get_vendorlib(PERL_FS_VERSION, &len);
4208 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4210 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_EXP), INCPUSH_CAN_RELOCATE);
4214 #if defined(PERL_VENDORLIB_STEM) && defined(PERL_INC_VERSION_LIST)
4215 /* Search for version-specific dirs below here */
4216 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_STEM), INCPUSH_CAN_RELOCATE);
4220 S_incpush_use_sep(aTHX_ STR_WITH_LEN(ARCHLIB_EXP), INCPUSH_CAN_RELOCATE);
4224 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
4228 s = win32_get_privlib(PERL_FS_VERSION, &len);
4230 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4233 S_incpush_use_sep(aTHX_ PRIVLIB_EXP, 0, INCPUSH_CAN_RELOCATE);
4235 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PRIVLIB_EXP), INCPUSH_CAN_RELOCATE);
4239 #ifdef PERL_OTHERLIBDIRS
4240 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS), INCPUSH_ADD_SUB_DIRS
4241 |INCPUSH_CAN_RELOCATE);
4243 #endif /* MACOS_TRADITIONAL */
4248 * It isn't possible to delete an environment variable with
4249 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4250 * case we treat PERL5LIB as undefined if it has a zero-length value.
4252 #if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
4253 if (perl5lib && *perl5lib != '\0')
4257 incpush_use_sep(perl5lib, 0,
4258 INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
4260 /* Treat PERL5?LIB as a possible search list logical name -- the
4261 * "natural" VMS idiom for a Unix path string. We allow each
4262 * element to be a set of |-separated directories for compatibility.
4266 if (my_trnlnm("PERL5LIB",buf,0))
4268 incpush_use_sep(buf, 0, INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
4269 } while (my_trnlnm("PERL5LIB",buf,++idx));
4273 /* Use the ~-expanded versions of APPLLIB (undocumented),
4274 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
4277 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP), INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR|INCPUSH_CAN_RELOCATE);
4280 #ifndef MACOS_TRADITIONAL
4281 #if defined(SITELIB_STEM) && defined(PERL_INC_VERSION_LIST)
4282 /* Search for version-specific dirs below here */
4283 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_STEM), INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR|INCPUSH_CAN_RELOCATE);
4287 #if defined(PERL_VENDORLIB_STEM) && defined(PERL_INC_VERSION_LIST)
4288 /* Search for version-specific dirs below here */
4289 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_STEM), INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR|INCPUSH_CAN_RELOCATE);
4292 #ifdef PERL_OTHERLIBDIRS
4293 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS), INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR|INCPUSH_CAN_RELOCATE);
4297 S_incpush(aTHX_ STR_WITH_LEN("."), 0);
4298 #endif /* MACOS_TRADITIONAL */
4301 #if defined(DOSISH) || defined(EPOC) || defined(__SYMBIAN32__)
4302 # define PERLLIB_SEP ';'
4305 # define PERLLIB_SEP '|'
4307 # if defined(MACOS_TRADITIONAL)
4308 # define PERLLIB_SEP ','
4310 # define PERLLIB_SEP ':'
4314 #ifndef PERLLIB_MANGLE
4315 # define PERLLIB_MANGLE(s,n) (s)
4318 /* Push a directory onto @INC if it exists.
4319 Generate a new SV if we do this, to save needing to copy the SV we push
4322 S_incpush_if_exists(pTHX_ AV *const av, SV *dir)
4327 PERL_ARGS_ASSERT_INCPUSH_IF_EXISTS;
4329 if (PerlLIO_stat(SvPVX_const(dir), &tmpstatbuf) >= 0 &&
4330 S_ISDIR(tmpstatbuf.st_mode)) {
4338 S_incpush(pTHX_ const char *const dir, STRLEN len, U32 flags)
4341 const U8 addsubdirs = (U8)flags & INCPUSH_ADD_SUB_DIRS;
4342 const U8 addoldvers = (U8)flags & INCPUSH_ADD_OLD_VERS;
4343 const U8 canrelocate = (U8)flags & INCPUSH_CAN_RELOCATE;
4344 const U8 unshift = (U8)flags & INCPUSH_UNSHIFT;
4345 const U8 push_basedir = (flags & INCPUSH_NOT_BASEDIR) ? 0 : 1;
4352 inc = GvAVn(PL_incgv);
4354 if (addsubdirs || addoldvers) {
4360 /* Change 20189146be79a0596543441fa369c6bf7f85103f, to fix RT#6665,
4361 arranged to unshift #! line -I onto the front of @INC. However,
4362 -I can add version and architecture specific libraries, and they
4363 need to go first. The old code assumed that it was always
4364 pushing. Hence to make it work, need to push the architecture
4365 (etc) libraries onto a temporary array, then "unshift" that onto
4366 the front of @INC. */
4368 = (addsubdirs || addoldvers) ? (unshift ? newAV() : inc) : NULL;
4371 /* I am not convinced that this is valid when PERLLIB_MANGLE is
4372 defined to so something (in os2/os2.c), but the code has been
4373 this way, ignoring any possible changed of length, since
4374 760ac839baf413929cd31cc32ffd6dba6b781a81 (5.003_02) so I'll leave
4376 libdir = newSVpvn(PERLLIB_MANGLE(dir, len), len);
4378 libdir = newSVpv(PERLLIB_MANGLE(dir, 0), 0);
4381 #ifdef MACOS_TRADITIONAL
4382 if (!strchr(SvPVX(libdir), ':')) {
4385 sv_setpv(libdir, MacPerl_CanonDir(SvPVX(libdir), buf, 0));
4387 if (SvPVX(libdir)[SvCUR(libdir)-1] != ':')
4388 sv_catpvs(libdir, ":");
4391 /* Do the if() outside the #ifdef to avoid warnings about an unused
4394 #ifdef PERL_RELOCATABLE_INC
4396 * Relocatable include entries are marked with a leading .../
4399 * 0: Remove that leading ".../"
4400 * 1: Remove trailing executable name (anything after the last '/')
4401 * from the perl path to give a perl prefix
4403 * While the @INC element starts "../" and the prefix ends with a real
4404 * directory (ie not . or ..) chop that real directory off the prefix
4405 * and the leading "../" from the @INC element. ie a logical "../"
4407 * Finally concatenate the prefix and the remainder of the @INC element
4408 * The intent is that /usr/local/bin/perl and .../../lib/perl5
4409 * generates /usr/local/lib/perl5
4411 const char *libpath = SvPVX(libdir);
4412 STRLEN libpath_len = SvCUR(libdir);
4413 if (libpath_len >= 4 && memEQ (libpath, ".../", 4)) {
4415 SV * const caret_X = get_sv("\030", 0);
4416 /* Going to use the SV just as a scratch buffer holding a C
4422 /* $^X is *the* source of taint if tainting is on, hence
4423 SvPOK() won't be true. */
4425 assert(SvPOKp(caret_X));
4426 prefix_sv = newSVpvn_flags(SvPVX(caret_X), SvCUR(caret_X),
4428 /* Firstly take off the leading .../
4429 If all else fail we'll do the paths relative to the current
4431 sv_chop(libdir, libpath + 4);
4432 /* Don't use SvPV as we're intentionally bypassing taining,
4433 mortal copies that the mg_get of tainting creates, and
4434 corruption that seems to come via the save stack.
4435 I guess that the save stack isn't correctly set up yet. */
4436 libpath = SvPVX(libdir);
4437 libpath_len = SvCUR(libdir);
4439 /* This would work more efficiently with memrchr, but as it's
4440 only a GNU extension we'd need to probe for it and
4441 implement our own. Not hard, but maybe not worth it? */
4443 prefix = SvPVX(prefix_sv);
4444 lastslash = strrchr(prefix, '/');
4446 /* First time in with the *lastslash = '\0' we just wipe off
4447 the trailing /perl from (say) /usr/foo/bin/perl
4451 while ((*lastslash = '\0'), /* Do that, come what may. */
4452 (libpath_len >= 3 && memEQ(libpath, "../", 3)
4453 && (lastslash = strrchr(prefix, '/')))) {
4454 if (lastslash[1] == '\0'
4455 || (lastslash[1] == '.'
4456 && (lastslash[2] == '/' /* ends "/." */
4457 || (lastslash[2] == '/'
4458 && lastslash[3] == '/' /* or "/.." */
4460 /* Prefix ends "/" or "/." or "/..", any of which
4461 are fishy, so don't do any more logical cleanup.
4465 /* Remove leading "../" from path */
4468 /* Next iteration round the loop removes the last
4469 directory name from prefix by writing a '\0' in
4470 the while clause. */
4472 /* prefix has been terminated with a '\0' to the correct
4473 length. libpath points somewhere into the libdir SV.
4474 We need to join the 2 with '/' and drop the result into
4476 tempsv = Perl_newSVpvf(aTHX_ "%s/%s", prefix, libpath);
4477 SvREFCNT_dec(libdir);
4478 /* And this is the new libdir. */
4481 (PL_uid != PL_euid || PL_gid != PL_egid)) {
4482 /* Need to taint reloccated paths if running set ID */
4483 SvTAINTED_on(libdir);
4486 SvREFCNT_dec(prefix_sv);
4491 * BEFORE pushing libdir onto @INC we may first push version- and
4492 * archname-specific sub-directories.
4494 if (addsubdirs || addoldvers) {
4495 #ifdef PERL_INC_VERSION_LIST
4496 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
4497 const char * const incverlist[] = { PERL_INC_VERSION_LIST };
4498 const char * const *incver;
4504 if ((unix = tounixspec_ts(SvPV(libdir,len),NULL)) != NULL) {
4506 while (unix[len-1] == '/') len--; /* Cosmetic */
4507 sv_usepvn(libdir,unix,len);
4510 PerlIO_printf(Perl_error_log,
4511 "Failed to unixify @INC element \"%s\"\n",
4515 #ifdef MACOS_TRADITIONAL
4516 #define PERL_ARCH_FMT_PREFIX ""
4517 #define PERL_ARCH_FMT_SUFFIX ":"
4518 #define PERL_ARCH_FMT_PATH PERL_FS_VERSION ""
4520 #define PERL_ARCH_FMT_PREFIX "/"
4521 #define PERL_ARCH_FMT_SUFFIX ""
4522 #define PERL_ARCH_FMT_PATH "/" PERL_FS_VERSION
4524 /* .../version/archname if -d .../version/archname */
4525 sv_setsv(subdir, libdir);
4526 sv_catpvs(subdir, PERL_ARCH_FMT_PATH \
4527 PERL_ARCH_FMT_PREFIX ARCHNAME PERL_ARCH_FMT_SUFFIX);
4528 subdir = S_incpush_if_exists(aTHX_ av, subdir);
4530 /* .../version if -d .../version */
4531 sv_setsv(subdir, libdir);
4532 sv_catpvs(subdir, PERL_ARCH_FMT_PATH);
4533 subdir = S_incpush_if_exists(aTHX_ av, subdir);
4535 /* .../archname if -d .../archname */
4536 sv_setsv(subdir, libdir);
4538 PERL_ARCH_FMT_PREFIX ARCHNAME PERL_ARCH_FMT_SUFFIX);
4539 subdir = S_incpush_if_exists(aTHX_ av, subdir);
4543 #ifdef PERL_INC_VERSION_LIST
4545 for (incver = incverlist; *incver; incver++) {
4546 /* .../xxx if -d .../xxx */
4547 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PREFIX \
4548 "%s" PERL_ARCH_FMT_SUFFIX,
4549 SVfARG(libdir), *incver);
4550 subdir = S_incpush_if_exists(aTHX_ av, subdir);
4556 /* finally add this lib directory at the end of @INC */
4558 U32 extra = av_len(av) + 1;
4559 av_unshift(inc, extra + push_basedir);
4561 av_store(inc, extra, libdir);
4563 /* av owns a reference, av_store() expects to be donated a
4564 reference, and av expects to be sane when it's cleared.
4565 If I wanted to be naughty and wrong, I could peek inside the
4566 implementation of av_clear(), realise that it uses
4567 SvREFCNT_dec() too, so av's array could be a run of NULLs,
4568 and so directly steal from it (with a memcpy() to inc, and
4569 then memset() to NULL them out. But people copy code from the
4570 core expecting it to be best practise, so let's use the API.
4571 Although studious readers will note that I'm not checking any
4573 av_store(inc, extra, SvREFCNT_inc(*av_fetch(av, extra, FALSE)));
4577 else if (push_basedir) {
4578 av_push(inc, libdir);
4581 if (!push_basedir) {
4582 assert (SvREFCNT(libdir) == 1);
4583 SvREFCNT_dec(libdir);
4587 assert (SvREFCNT(subdir) == 1);
4588 SvREFCNT_dec(subdir);
4593 S_incpush_use_sep(pTHX_ const char *p, STRLEN len, U32 flags)
4597 /* This logic has been broken out from S_incpush(). It may be possible to
4600 PERL_ARGS_ASSERT_INCPUSH_USE_SEP;
4607 /* Break at all separators */
4608 while ((s = (const char*)memchr(p, PERLLIB_SEP, end - p))) {
4610 /* skip any consecutive separators */
4612 /* Uncomment the next line for PATH semantics */
4613 /* But you'll need to write tests */
4614 /* av_push(GvAVn(PL_incgv), newSVpvs(".")); */
4616 incpush(p, (STRLEN)(s - p), flags);
4621 incpush(p, (STRLEN)(end - p), flags);
4626 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
4630 volatile const line_t oldline = PL_curcop ? CopLINE(PL_curcop) : 0;
4636 PERL_ARGS_ASSERT_CALL_LIST;
4638 while (av_len(paramList) >= 0) {
4639 cv = MUTABLE_CV(av_shift(paramList));
4641 if (paramList == PL_beginav) {
4642 /* save PL_beginav for compiler */
4643 Perl_av_create_and_push(aTHX_ &PL_beginav_save, MUTABLE_SV(cv));
4645 else if (paramList == PL_checkav) {
4646 /* save PL_checkav for compiler */
4647 Perl_av_create_and_push(aTHX_ &PL_checkav_save, MUTABLE_SV(cv));
4649 else if (paramList == PL_unitcheckav) {
4650 /* save PL_unitcheckav for compiler */
4651 Perl_av_create_and_push(aTHX_ &PL_unitcheckav_save, MUTABLE_SV(cv));
4662 PL_madskills |= 16384;
4667 PL_madskills &= ~16384;
4670 (void)SvPV_const(atsv, len);
4672 PL_curcop = &PL_compiling;
4673 CopLINE_set(PL_curcop, oldline);
4674 if (paramList == PL_beginav)
4675 sv_catpvs(atsv, "BEGIN failed--compilation aborted");
4677 Perl_sv_catpvf(aTHX_ atsv,
4678 "%s failed--call queue aborted",
4679 paramList == PL_checkav ? "CHECK"
4680 : paramList == PL_initav ? "INIT"
4681 : paramList == PL_unitcheckav ? "UNITCHECK"
4683 while (PL_scopestack_ix > oldscope)
4686 Perl_croak(aTHX_ "%"SVf"", SVfARG(atsv));
4693 /* my_exit() was called */
4694 while (PL_scopestack_ix > oldscope)
4697 PL_curstash = PL_defstash;
4698 PL_curcop = &PL_compiling;
4699 CopLINE_set(PL_curcop, oldline);
4701 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
4702 if (paramList == PL_beginav)
4703 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
4705 Perl_croak(aTHX_ "%s failed--call queue aborted",
4706 paramList == PL_checkav ? "CHECK"
4707 : paramList == PL_initav ? "INIT"
4708 : paramList == PL_unitcheckav ? "UNITCHECK"
4715 PL_curcop = &PL_compiling;
4716 CopLINE_set(PL_curcop, oldline);
4719 PerlIO_printf(Perl_error_log, "panic: restartop\n");
4728 Perl_my_exit(pTHX_ U32 status)
4739 STATUS_EXIT_SET(status);
4746 Perl_my_failure_exit(pTHX)
4750 /* We have been called to fall on our sword. The desired exit code
4751 * should be already set in STATUS_UNIX, but could be shifted over
4752 * by 8 bits. STATUS_UNIX_EXIT_SET will handle the cases where a
4755 * If an error code has not been set, then force the issue.
4757 if (MY_POSIX_EXIT) {
4759 /* According to the die_exit.t tests, if errno is non-zero */
4760 /* It should be used for the error status. */
4762 if (errno == EVMSERR) {
4763 STATUS_NATIVE = vaxc$errno;
4766 /* According to die_exit.t tests, if the child_exit code is */
4767 /* also zero, then we need to exit with a code of 255 */
4768 if ((errno != 0) && (errno < 256))
4769 STATUS_UNIX_EXIT_SET(errno);
4770 else if (STATUS_UNIX < 255) {
4771 STATUS_UNIX_EXIT_SET(255);
4776 /* The exit code could have been set by $? or vmsish which
4777 * means that it may not have fatal set. So convert
4778 * success/warning codes to fatal with out changing
4779 * the POSIX status code. The severity makes VMS native
4780 * status handling work, while UNIX mode programs use the
4781 * the POSIX exit codes.
4783 if ((STATUS_NATIVE & (STS$K_SEVERE|STS$K_ERROR)) == 0) {
4784 STATUS_NATIVE &= STS$M_COND_ID;
4785 STATUS_NATIVE |= STS$K_ERROR | STS$M_INHIB_MSG;
4789 /* Traditionally Perl on VMS always expects a Fatal Error. */
4790 if (vaxc$errno & 1) {
4792 /* So force success status to failure */
4793 if (STATUS_NATIVE & 1)
4798 STATUS_UNIX = EINTR; /* In case something cares */
4803 STATUS_NATIVE = vaxc$errno; /* Should already be this */
4805 /* Encode the severity code */
4806 severity = STATUS_NATIVE & STS$M_SEVERITY;
4807 STATUS_UNIX = (severity ? severity : 1) << 8;
4809 /* Perl expects this to be a fatal error */
4810 if (severity != STS$K_SEVERE)
4819 STATUS_UNIX_SET(errno);
4821 exitstatus = STATUS_UNIX >> 8;
4822 if (exitstatus & 255)
4823 STATUS_UNIX_SET(exitstatus);
4825 STATUS_UNIX_SET(255);
4832 S_my_exit_jump(pTHX)
4837 SvREFCNT_dec(PL_e_script);
4841 POPSTACK_TO(PL_mainstack);
4849 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen)
4852 const char * const p = SvPVX_const(PL_e_script);
4853 const char *nl = strchr(p, '\n');
4855 PERL_UNUSED_ARG(idx);
4856 PERL_UNUSED_ARG(maxlen);
4858 nl = (nl) ? nl+1 : SvEND(PL_e_script);
4860 filter_del(read_e_script);
4863 sv_catpvn(buf_sv, p, nl-p);
4864 sv_chop(PL_e_script, nl);
4870 * c-indentation-style: bsd
4872 * indent-tabs-mode: t
4875 * ex: set ts=8 sts=4 sw=4 noet: