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_UNSHIFT 0x01
1628 #define INCPUSH_ADD_OLD_VERS 0x02
1629 #define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1630 #define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1631 #define INCPUSH_NOT_BASEDIR 0x10
1632 #define INCPUSH_CAN_RELOCATE 0x20
1633 #define INCPUSH_ADD_SUB_DIRS \
1634 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
1637 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
1641 int argc = PL_origargc;
1642 char **argv = PL_origargv;
1643 const char *scriptname = NULL;
1644 VOL bool dosearch = FALSE;
1646 const char *cddir = NULL;
1647 #ifdef USE_SITECUSTOMIZE
1648 bool minus_f = FALSE;
1650 SV *linestr_sv = newSV_type(SVt_PVIV);
1651 bool add_read_e_script = FALSE;
1653 SvGROW(linestr_sv, 80);
1654 sv_setpvs(linestr_sv,"");
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);
1752 Perl_croak(aTHX_ "No directory specified for -I");
1755 forbid_setid('S', FALSE);
1763 Perl_av_create_and_push(aTHX_ &PL_preambleav, newSVpvs("use Config;"));
1765 /* Can't do newSVpvs() as that would involve pre-processor
1766 condititionals inside a macro expansion. */
1767 opts_prog = Perl_newSVpv(aTHX_ "$_ = join ' ', sort qw("
1774 # ifdef PERL_DONT_CREATE_GVSV
1775 " PERL_DONT_CREATE_GVSV"
1777 # ifdef PERL_MALLOC_WRAP
1780 # ifdef PERL_MEM_LOG
1783 # ifdef PERL_MEM_LOG_ENV
1786 # ifdef PERL_MEM_LOG_ENV_FD
1787 " PERL_MEM_LOG_ENV_FD"
1789 # ifdef PERL_MEM_LOG_STDERR
1790 " PERL_MEM_LOG_STDERR"
1792 # ifdef PERL_MEM_LOG_TIMESTAMP
1793 " PERL_MEM_LOG_TIMESTAMP"
1795 # ifdef PERL_USE_DEVEL
1798 # ifdef PERL_USE_SAFE_PUTENV
1799 " PERL_USE_SAFE_PUTENV"
1801 # ifdef USE_SITECUSTOMIZE
1802 " USE_SITECUSTOMIZE"
1804 # ifdef USE_FAST_STDIO
1809 sv_catpv(opts_prog, PL_bincompat_options);
1810 /* Terminate the qw(, and then wrap at 76 columns. */
1811 sv_catpvs(opts_prog, "); s/(?=.{53})(.{1,53}) /$1\\n /mg;print Config::myconfig(),");
1813 sv_catpvs(opts_prog,"\"\\nCharacteristics of this PERLSHR image: \\n");
1815 sv_catpvs(opts_prog,"\"\\nCharacteristics of this binary (from libperl): \\n");
1817 sv_catpvs(opts_prog," Compile-time options: $_\\n\",");
1819 #if defined(LOCAL_PATCH_COUNT)
1820 if (LOCAL_PATCH_COUNT > 0) {
1822 sv_catpvs(opts_prog,
1823 "\" Locally applied patches:\\n\",");
1824 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1825 if (PL_localpatches[i])
1826 Perl_sv_catpvf(aTHX_ opts_prog,"q%c\t%s\n%c,",
1827 0, PL_localpatches[i], 0);
1831 Perl_sv_catpvf(aTHX_ opts_prog,
1832 "\" Built under %s\\n",OSNAME);
1835 sv_catpvs(opts_prog,
1836 " Compiled at " __DATE__ " " __TIME__ "\\n\"");
1838 sv_catpvs(opts_prog, " Compiled on " __DATE__ "\\n\"");
1841 sv_catpvs(opts_prog, "; $\"=\"\\n \"; "
1842 "@env = map { \"$_=\\\"$ENV{$_}\\\"\" } "
1843 "sort grep {/^PERL/} keys %ENV; ");
1845 sv_catpvs(opts_prog,
1846 "push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
1848 sv_catpvs(opts_prog,
1849 "print \" \\%ENV:\\n @env\\n\" if @env;"
1850 "print \" \\@INC:\\n @INC\\n\";");
1854 opts_prog = Perl_newSVpvf(aTHX_
1855 "Config::config_vars(qw%c%s%c)",
1859 av_push(PL_preambleav, opts_prog);
1860 /* don't look for script or read stdin */
1861 scriptname = BIT_BUCKET;
1865 PL_doextract = TRUE;
1873 if (!*++s || isSPACE(*s)) {
1877 /* catch use of gnu style long options */
1878 if (strEQ(s, "version")) {
1882 if (strEQ(s, "help")) {
1889 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1900 #ifndef SECURE_INTERNAL_GETENV
1903 (s = PerlEnv_getenv("PERL5OPT")))
1907 if (*s == '-' && *(s+1) == 'T') {
1908 CHECK_MALLOC_TOO_LATE_FOR('T');
1910 PL_taint_warn = FALSE;
1913 char *popt_copy = NULL;
1926 if (!strchr("CDIMUdmtw", *s))
1927 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
1931 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
1932 s = popt_copy + (s - d);
1940 if( !PL_tainting ) {
1941 PL_taint_warn = TRUE;
1952 #ifdef USE_SITECUSTOMIZE
1954 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
1955 Perl_newSVpvf(aTHX_ "BEGIN { do '%s/sitecustomize.pl' }", SITELIB_EXP));
1960 scriptname = argv[0];
1963 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1965 else if (scriptname == NULL) {
1967 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1973 /* Set $^X early so that it can be used for relocatable paths in @INC */
1974 assert (!PL_tainted);
1976 S_set_caret_X(aTHX);
1981 bool suidscript = FALSE;
1983 open_script(scriptname, dosearch, &suidscript, &rsfp);
1985 validate_suid(validarg, scriptname, fdscript, suidscript,
1989 # if defined(SIGCHLD) || defined(SIGCLD)
1992 # define SIGCHLD SIGCLD
1994 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1995 if (sigstate == (Sighandler_t) SIG_IGN) {
1996 if (ckWARN(WARN_SIGNAL))
1997 Perl_warner(aTHX_ packWARN(WARN_SIGNAL),
1998 "Can't ignore signal CHLD, forcing to default");
1999 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2006 #ifdef MACOS_TRADITIONAL
2007 || gMacPerl_AlwaysExtract
2011 /* This will croak if suidscript is true, as -x cannot be used with
2013 forbid_setid('x', suidscript);
2014 /* Hence you can't get here if suidscript is true */
2016 find_beginning(linestr_sv, rsfp);
2017 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2018 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2022 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
2023 CvUNIQUE_on(PL_compcv);
2025 CvPADLIST(PL_compcv) = pad_new(0);
2027 PL_isarev = newHV();
2030 boot_core_UNIVERSAL();
2034 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
2036 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC) || defined(SYMBIAN)
2042 # ifdef HAS_SOCKS5_INIT
2043 socks5_init(argv[0]);
2049 init_predump_symbols();
2050 /* init_postdump_symbols not currently designed to be called */
2051 /* more than once (ENV isn't cleared first, for example) */
2052 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
2054 init_postdump_symbols(argc,argv,env);
2056 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2057 * or explicitly in some platforms.
2058 * locale.c:Perl_init_i18nl10n() if the environment
2059 * look like the user wants to use UTF-8. */
2060 #if defined(__SYMBIAN32__)
2061 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2064 /* Requires init_predump_symbols(). */
2065 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
2070 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
2071 * and the default open disciplines. */
2072 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2073 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2075 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2076 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2077 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2079 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2080 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2081 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2083 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2084 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
2085 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2087 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2088 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2091 sv_setpvs(sv, ":utf8\0:utf8");
2093 sv_setpvs(sv, ":utf8\0");
2096 sv_setpvs(sv, "\0:utf8");
2104 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2105 if (strEQ(s, "unsafe"))
2106 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2107 else if (strEQ(s, "safe"))
2108 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2110 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2117 if ((s = PerlEnv_getenv("PERL_XMLDUMP"))) {
2121 PL_xmlfp = PerlIO_stdout();
2123 PL_xmlfp = PerlIO_open(s, "w");
2125 Perl_croak(aTHX_ "Can't open %s", s);
2127 my_setenv("PERL_XMLDUMP", NULL); /* hide from subprocs */
2133 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2134 PL_madskills = atoi(s);
2135 my_setenv("PERL_MADSKILLS", NULL); /* hide from subprocs */
2140 lex_start(linestr_sv, rsfp, TRUE);
2141 PL_subname = newSVpvs("main");
2143 if (add_read_e_script)
2144 filter_add(read_e_script, NULL);
2146 /* now parse the script */
2148 SETERRNO(0,SS_NORMAL);
2149 #ifdef MACOS_TRADITIONAL
2150 if (gMacPerl_SyntaxError = (yyparse() || PL_parser->error_count)) {
2152 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
2154 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
2155 MacPerl_MPWFileName(PL_origfilename));
2159 if (yyparse() || PL_parser->error_count) {
2161 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
2163 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
2168 CopLINE_set(PL_curcop, 0);
2169 PL_curstash = PL_defstash;
2171 SvREFCNT_dec(PL_e_script);
2179 SAVECOPFILE(PL_curcop);
2180 SAVECOPLINE(PL_curcop);
2181 gv_check(PL_defstash);
2190 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2191 dump_mstats("after compilation:");
2201 =for apidoc perl_run
2203 Tells a Perl interpreter to run. See L<perlembed>.
2216 PERL_ARGS_ASSERT_PERL_RUN;
2217 #ifndef MULTIPLICITY
2218 PERL_UNUSED_ARG(my_perl);
2221 oldscope = PL_scopestack_ix;
2229 cxstack_ix = -1; /* start context stack again */
2231 case 0: /* normal completion */
2235 case 2: /* my_exit() */
2236 while (PL_scopestack_ix > oldscope)
2239 PL_curstash = PL_defstash;
2240 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
2241 PL_endav && !PL_minus_c)
2242 call_list(oldscope, PL_endav);
2244 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2245 dump_mstats("after execution: ");
2251 POPSTACK_TO(PL_mainstack);
2254 PerlIO_printf(Perl_error_log, "panic: restartop\n");
2265 S_run_body(pTHX_ I32 oldscope)
2268 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
2269 PL_sawampersand ? "Enabling" : "Omitting"));
2271 if (!PL_restartop) {
2275 exit(0); /* less likely to core dump than my_exit(0) */
2278 DEBUG_x(dump_all());
2281 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
2285 #ifdef MACOS_TRADITIONAL
2286 PerlIO_printf(Perl_error_log, "%s%s syntax OK\n",
2287 (gMacPerl_ErrorFormat ? "# " : ""),
2288 MacPerl_MPWFileName(PL_origfilename));
2290 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
2294 if (PERLDB_SINGLE && PL_DBsingle)
2295 sv_setiv(PL_DBsingle, 1);
2297 call_list(oldscope, PL_initav);
2298 #ifdef PERL_DEBUG_READONLY_OPS
2299 Perl_pending_Slabs_to_ro(aTHX);
2306 PL_op = PL_restartop;
2310 else if (PL_main_start) {
2311 CvDEPTH(PL_main_cv) = 1;
2312 PL_op = PL_main_start;
2320 =head1 SV Manipulation Functions
2322 =for apidoc p||get_sv
2324 Returns the SV of the specified Perl scalar. C<flags> are passed to
2325 C<gv_fetchpv>. If C<GV_ADD> is set and the
2326 Perl variable does not exist then it will be created. If C<flags> is zero
2327 and the variable does not exist then NULL is returned.
2333 Perl_get_sv(pTHX_ const char *name, I32 flags)
2337 PERL_ARGS_ASSERT_GET_SV;
2339 gv = gv_fetchpv(name, flags, SVt_PV);
2346 =head1 Array Manipulation Functions
2348 =for apidoc p||get_av
2350 Returns the AV of the specified Perl array. C<flags> are passed to
2351 C<gv_fetchpv>. If C<GV_ADD> is set and the
2352 Perl variable does not exist then it will be created. If C<flags> is zero
2353 and the variable does not exist then NULL is returned.
2359 Perl_get_av(pTHX_ const char *name, I32 flags)
2361 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
2363 PERL_ARGS_ASSERT_GET_AV;
2373 =head1 Hash Manipulation Functions
2375 =for apidoc p||get_hv
2377 Returns the HV of the specified Perl hash. C<flags> are passed to
2378 C<gv_fetchpv>. If C<GV_ADD> is set and the
2379 Perl variable does not exist then it will be created. If C<flags> is zero
2380 and the variable does not exist then NULL is returned.
2386 Perl_get_hv(pTHX_ const char *name, I32 flags)
2388 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
2390 PERL_ARGS_ASSERT_GET_HV;
2400 =head1 CV Manipulation Functions
2402 =for apidoc p||get_cvn_flags
2404 Returns the CV of the specified Perl subroutine. C<flags> are passed to
2405 C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2406 exist then it will be declared (which has the same effect as saying
2407 C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2408 then NULL is returned.
2410 =for apidoc p||get_cv
2412 Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
2418 Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
2420 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
2421 /* XXX this is probably not what they think they're getting.
2422 * It has the same effect as "sub name;", i.e. just a forward
2425 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2427 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
2428 SV *const sv = newSVpvn_flags(name, len, flags & SVf_UTF8);
2429 return newSUB(start_subparse(FALSE, 0),
2430 newSVOP(OP_CONST, 0, sv),
2438 /* Nothing in core calls this now, but we can't replace it with a macro and
2439 move it to mathoms.c as a macro would evaluate name twice. */
2441 Perl_get_cv(pTHX_ const char *name, I32 flags)
2443 PERL_ARGS_ASSERT_GET_CV;
2445 return get_cvn_flags(name, strlen(name), flags);
2448 /* Be sure to refetch the stack pointer after calling these routines. */
2452 =head1 Callback Functions
2454 =for apidoc p||call_argv
2456 Performs a callback to the specified Perl sub. See L<perlcall>.
2462 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
2464 /* See G_* flags in cop.h */
2465 /* null terminated arg list */
2470 PERL_ARGS_ASSERT_CALL_ARGV;
2475 mXPUSHs(newSVpv(*argv,0));
2480 return call_pv(sub_name, flags);
2484 =for apidoc p||call_pv
2486 Performs a callback to the specified Perl sub. See L<perlcall>.
2492 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
2493 /* name of the subroutine */
2494 /* See G_* flags in cop.h */
2496 PERL_ARGS_ASSERT_CALL_PV;
2498 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
2502 =for apidoc p||call_method
2504 Performs a callback to the specified Perl method. The blessed object must
2505 be on the stack. See L<perlcall>.
2511 Perl_call_method(pTHX_ const char *methname, I32 flags)
2512 /* name of the subroutine */
2513 /* See G_* flags in cop.h */
2515 PERL_ARGS_ASSERT_CALL_METHOD;
2517 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
2520 /* May be called with any of a CV, a GV, or an SV containing the name. */
2522 =for apidoc p||call_sv
2524 Performs a callback to the Perl sub whose name is in the SV. See
2531 Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
2532 /* See G_* flags in cop.h */
2535 LOGOP myop; /* fake syntax tree node */
2540 bool oldcatch = CATCH_GET;
2542 OP* const oldop = PL_op;
2545 PERL_ARGS_ASSERT_CALL_SV;
2547 if (flags & G_DISCARD) {
2551 if (!(flags & G_WANT)) {
2552 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2557 Zero(&myop, 1, LOGOP);
2558 myop.op_next = NULL;
2559 if (!(flags & G_NOARGS))
2560 myop.op_flags |= OPf_STACKED;
2561 myop.op_flags |= OP_GIMME_REVERSE(flags);
2565 EXTEND(PL_stack_sp, 1);
2566 *++PL_stack_sp = sv;
2568 oldscope = PL_scopestack_ix;
2570 if (PERLDB_SUB && PL_curstash != PL_debstash
2571 /* Handle first BEGIN of -d. */
2572 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
2573 /* Try harder, since this may have been a sighandler, thus
2574 * curstash may be meaningless. */
2575 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
2576 && !(flags & G_NODEBUG))
2577 PL_op->op_private |= OPpENTERSUB_DB;
2579 if (flags & G_METHOD) {
2580 Zero(&method_op, 1, UNOP);
2581 method_op.op_next = PL_op;
2582 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2583 method_op.op_type = OP_METHOD;
2584 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
2585 myop.op_type = OP_ENTERSUB;
2586 PL_op = (OP*)&method_op;
2589 if (!(flags & G_EVAL)) {
2591 CALL_BODY_SUB((OP*)&myop);
2592 retval = PL_stack_sp - (PL_stack_base + oldmark);
2593 CATCH_SET(oldcatch);
2596 myop.op_other = (OP*)&myop;
2598 create_eval_scope(flags|G_FAKINGEVAL);
2606 CALL_BODY_SUB((OP*)&myop);
2607 retval = PL_stack_sp - (PL_stack_base + oldmark);
2608 if (!(flags & G_KEEPERR)) {
2616 /* my_exit() was called */
2617 PL_curstash = PL_defstash;
2620 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
2621 Perl_croak(aTHX_ "Callback called exit");
2626 PL_op = PL_restartop;
2630 PL_stack_sp = PL_stack_base + oldmark;
2631 if ((flags & G_WANT) == G_ARRAY)
2635 *++PL_stack_sp = &PL_sv_undef;
2640 if (PL_scopestack_ix > oldscope)
2641 delete_eval_scope();
2645 if (flags & G_DISCARD) {
2646 PL_stack_sp = PL_stack_base + oldmark;
2655 /* Eval a string. The G_EVAL flag is always assumed. */
2658 =for apidoc p||eval_sv
2660 Tells Perl to C<eval> the string in the SV.
2666 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
2668 /* See G_* flags in cop.h */
2672 UNOP myop; /* fake syntax tree node */
2673 VOL I32 oldmark = SP - PL_stack_base;
2676 OP* const oldop = PL_op;
2679 PERL_ARGS_ASSERT_EVAL_SV;
2681 if (flags & G_DISCARD) {
2688 Zero(PL_op, 1, UNOP);
2689 EXTEND(PL_stack_sp, 1);
2690 *++PL_stack_sp = sv;
2692 if (!(flags & G_NOARGS))
2693 myop.op_flags = OPf_STACKED;
2694 myop.op_next = NULL;
2695 myop.op_type = OP_ENTEREVAL;
2696 myop.op_flags |= OP_GIMME_REVERSE(flags);
2697 if (flags & G_KEEPERR)
2698 myop.op_flags |= OPf_SPECIAL;
2700 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2701 * before a PUSHEVAL, which corrupts the stack after a croak */
2702 TAINT_PROPER("eval_sv()");
2708 CALL_BODY_EVAL((OP*)&myop);
2709 retval = PL_stack_sp - (PL_stack_base + oldmark);
2710 if (!(flags & G_KEEPERR)) {
2718 /* my_exit() was called */
2719 PL_curstash = PL_defstash;
2722 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
2723 Perl_croak(aTHX_ "Callback called exit");
2728 PL_op = PL_restartop;
2732 PL_stack_sp = PL_stack_base + oldmark;
2733 if ((flags & G_WANT) == G_ARRAY)
2737 *++PL_stack_sp = &PL_sv_undef;
2743 if (flags & G_DISCARD) {
2744 PL_stack_sp = PL_stack_base + oldmark;
2754 =for apidoc p||eval_pv
2756 Tells Perl to C<eval> the given string and return an SV* result.
2762 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
2766 SV* sv = newSVpv(p, 0);
2768 PERL_ARGS_ASSERT_EVAL_PV;
2770 eval_sv(sv, G_SCALAR);
2777 if (croak_on_error && SvTRUE(ERRSV)) {
2778 Perl_croak(aTHX_ "%s", SvPVx_nolen_const(ERRSV));
2784 /* Require a module. */
2787 =head1 Embedding Functions
2789 =for apidoc p||require_pv
2791 Tells Perl to C<require> the file named by the string argument. It is
2792 analogous to the Perl code C<eval "require '$file'">. It's even
2793 implemented that way; consider using load_module instead.
2798 Perl_require_pv(pTHX_ const char *pv)
2804 PERL_ARGS_ASSERT_REQUIRE_PV;
2806 PUSHSTACKi(PERLSI_REQUIRE);
2808 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2809 eval_sv(sv_2mortal(sv), G_DISCARD);
2815 S_usage(pTHX_ const char *name) /* XXX move this out into a module ? */
2817 /* This message really ought to be max 23 lines.
2818 * Removed -h because the user already knows that option. Others? */
2820 static const char * const usage_msg[] = {
2821 "-0[octal] specify record separator (\\0, if no argument)",
2822 "-a autosplit mode with -n or -p (splits $_ into @F)",
2823 "-C[number/list] enables the listed Unicode features",
2824 "-c check syntax only (runs BEGIN and CHECK blocks)",
2825 "-d[:debugger] run program under debugger",
2826 "-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2827 "-e program one line of program (several -e's allowed, omit programfile)",
2828 "-E program like -e, but enables all optional features",
2829 "-f don't do $sitelib/sitecustomize.pl at startup",
2830 "-F/pattern/ split() pattern for -a switch (//'s are optional)",
2831 "-i[extension] edit <> files in place (makes backup if extension supplied)",
2832 "-Idirectory specify @INC/#include directory (several -I's allowed)",
2833 "-l[octal] enable line ending processing, specifies line terminator",
2834 "-[mM][-]module execute \"use/no module...\" before executing program",
2835 "-n assume \"while (<>) { ... }\" loop around program",
2836 "-p assume loop like -n but print line also, like sed",
2837 "-s enable rudimentary parsing for switches after programfile",
2838 "-S look for programfile using PATH environment variable",
2839 "-t enable tainting warnings",
2840 "-T enable tainting checks",
2841 "-u dump core after parsing program",
2842 "-U allow unsafe operations",
2843 "-v print version, subversion (includes VERY IMPORTANT perl info)",
2844 "-V[:variable] print configuration summary (or a single Config.pm variable)",
2845 "-w enable many useful warnings (RECOMMENDED)",
2846 "-W enable all warnings",
2847 "-x[directory] strip off text before #!perl line and perhaps cd to directory",
2848 "-X disable all warnings",
2852 const char * const *p = usage_msg;
2854 PERL_ARGS_ASSERT_USAGE;
2856 PerlIO_printf(PerlIO_stdout(),
2857 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2860 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
2863 /* convert a string of -D options (or digits) into an int.
2864 * sets *s to point to the char after the options */
2868 Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
2870 static const char * const usage_msgd[] = {
2871 " Debugging flag values: (see also -d)",
2872 " p Tokenizing and parsing (with v, displays parse stack)",
2873 " s Stack snapshots (with v, displays all stacks)",
2874 " l Context (loop) stack processing",
2875 " t Trace execution",
2876 " o Method and overloading resolution",
2877 " c String/numeric conversions",
2878 " P Print profiling info, source file input state",
2879 " m Memory and SV allocation",
2880 " f Format processing",
2881 " r Regular expression parsing and execution",
2882 " x Syntax tree dump",
2883 " u Tainting checks",
2884 " H Hash dump -- usurps values()",
2885 " X Scratchpad allocation",
2888 " R Include reference counts of dumped variables (eg when using -Ds)",
2889 " J Do not s,t,P-debug (Jump over) opcodes within package DB",
2890 " v Verbose: use in conjunction with other flags",
2892 " A Consistency checks on internal structures",
2893 " q quiet - currently only suppresses the 'EXECUTING' message",
2898 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
2901 /* if adding extra options, remember to update DEBUG_MASK */
2902 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAq";
2904 for (; isALNUM(**s); (*s)++) {
2905 const char * const d = strchr(debopts,**s);
2907 i |= 1 << (d - debopts);
2908 else if (ckWARN_d(WARN_DEBUGGING))
2909 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2910 "invalid option -D%c, use -D'' to see choices\n", **s);
2913 else if (isDIGIT(**s)) {
2915 for (; isALNUM(**s); (*s)++) ;
2917 else if (givehelp) {
2918 const char *const *p = usage_msgd;
2919 while (*p) PerlIO_printf(PerlIO_stdout(), "%s\n", *p++);
2922 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
2923 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2924 "-Dp not implemented on this platform\n");
2930 /* This routine handles any switches that can be given during run */
2933 Perl_moreswitches(pTHX_ const char *s)
2937 const char option = *s; /* used to remember option in -m/-M code */
2939 PERL_ARGS_ASSERT_MORESWITCHES;
2947 SvREFCNT_dec(PL_rs);
2948 if (s[1] == 'x' && s[2]) {
2949 const char *e = s+=2;
2955 flags = PERL_SCAN_SILENT_ILLDIGIT;
2956 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
2957 if (s + numlen < e) {
2958 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
2962 PL_rs = newSVpvs("");
2963 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
2964 tmps = (U8*)SvPVX(PL_rs);
2965 uvchr_to_utf8(tmps, rschar);
2966 SvCUR_set(PL_rs, UNISKIP(rschar));
2971 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
2972 if (rschar & ~((U8)~0))
2973 PL_rs = &PL_sv_undef;
2974 else if (!rschar && numlen >= 2)
2975 PL_rs = newSVpvs("");
2977 char ch = (char)rschar;
2978 PL_rs = newSVpvn(&ch, 1);
2981 sv_setsv(get_sv("/", GV_ADD), PL_rs);
2986 PL_unicode = parse_unicode_opts( (const char **)&s );
2987 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
2993 while (*s && !isSPACE(*s)) ++s;
2994 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
3005 forbid_setid('d', FALSE);
3008 /* -dt indicates to the debugger that threads will be used */
3009 if (*s == 't' && !isALNUM(s[1])) {
3011 my_setenv("PERL5DB_THREADED", "1");
3014 /* The following permits -d:Mod to accepts arguments following an =
3015 in the fashion that -MSome::Mod does. */
3016 if (*s == ':' || *s == '=') {
3017 const char *start = ++s;
3018 const char *const end = s + strlen(s);
3019 SV * const sv = newSVpvs("use Devel::");
3021 /* We now allow -d:Module=Foo,Bar */
3022 while(isALNUM(*s) || *s==':') ++s;
3024 sv_catpvn(sv, start, end - start);
3026 sv_catpvn(sv, start, s-start);
3027 /* Don't use NUL as q// delimiter here, this string goes in the
3029 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
3032 my_setenv("PERL5DB", SvPV_nolen_const(sv));
3036 PL_perldb = PERLDB_ALL;
3043 forbid_setid('D', FALSE);
3045 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
3046 #else /* !DEBUGGING */
3047 if (ckWARN_d(WARN_DEBUGGING))
3048 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3049 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
3050 for (s++; isALNUM(*s); s++) ;
3055 usage(PL_origargv[0]);
3058 Safefree(PL_inplace);
3059 #if defined(__CYGWIN__) /* do backup extension automagically */
3060 if (*(s+1) == '\0') {
3061 PL_inplace = savepvs(".bak");
3064 #endif /* __CYGWIN__ */
3066 const char * const start = ++s;
3067 while (*s && !isSPACE(*s))
3070 PL_inplace = savepvn(start, s - start);
3074 if (*s == '-') /* Additional switches on #! line. */
3078 case 'I': /* -I handled both here and in parse_body() */
3079 forbid_setid('I', FALSE);
3081 while (*s && isSPACE(*s))
3086 /* ignore trailing spaces (possibly followed by other switches) */
3088 for (e = p; *e && !isSPACE(*e); e++) ;
3092 } while (*p && *p != '-');
3094 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
3100 Perl_croak(aTHX_ "No directory specified for -I");
3106 SvREFCNT_dec(PL_ors_sv);
3112 PL_ors_sv = newSVpvs("\n");
3113 numlen = 3 + (*s == '0');
3114 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
3118 if (RsPARA(PL_rs)) {
3119 PL_ors_sv = newSVpvs("\n\n");
3122 PL_ors_sv = newSVsv(PL_rs);
3127 forbid_setid('M', FALSE); /* XXX ? */
3130 forbid_setid('m', FALSE); /* XXX ? */
3135 const char *use = "use ";
3137 /* -M-foo == 'no foo' */
3138 /* Leading space on " no " is deliberate, to make both
3139 possibilities the same length. */
3140 if (*s == '-') { use = " no "; ++s; }
3141 sv = newSVpvn(use,4);
3143 /* We allow -M'Module qw(Foo Bar)' */
3144 while(isALNUM(*s) || *s==':') {
3153 Perl_croak(aTHX_ "Module name required with -%c option",
3156 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3157 "contains single ':'",
3158 (int)(s - start), start, option);
3159 end = s + strlen(s);
3161 sv_catpvn(sv, start, end - start);
3162 if (option == 'm') {
3164 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
3165 sv_catpvs( sv, " ()");
3168 sv_catpvn(sv, start, s-start);
3169 /* Use NUL as q''-delimiter. */
3170 sv_catpvs(sv, " split(/,/,q\0");
3172 sv_catpvn(sv, s, end - s);
3173 sv_catpvs(sv, "\0)");
3176 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
3179 Perl_croak(aTHX_ "Missing argument to -%c", option);
3190 forbid_setid('s', FALSE);
3191 PL_doswitches = TRUE;
3205 #ifdef MACOS_TRADITIONAL
3206 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
3208 PL_do_undump = TRUE;
3216 if (!sv_derived_from(PL_patchlevel, "version"))
3217 upg_version(PL_patchlevel, TRUE);
3220 SV* level= vstringify(PL_patchlevel);
3221 #ifdef PERL_PATCHNUM
3222 # ifdef PERL_GIT_UNCOMMITTED_CHANGES
3223 SV *num = newSVpvs(PERL_PATCHNUM "*");
3225 SV *num = newSVpvs(PERL_PATCHNUM);
3228 if (sv_len(num)>=sv_len(level) && strnEQ(SvPV_nolen(num),SvPV_nolen(level),sv_len(level))) {
3229 SvREFCNT_dec(level);
3232 Perl_sv_catpvf(aTHX_ level, " (%"SVf")", num);
3236 PerlIO_printf(PerlIO_stdout(),
3237 "\nThis is perl, %"SVf
3241 SvREFCNT_dec(level);
3244 /* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3245 PerlIO_printf(PerlIO_stdout(),
3246 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
3247 SVfARG(vstringify(PL_patchlevel))));
3248 PerlIO_printf(PerlIO_stdout(),
3249 Perl_form(aTHX_ " built under %s at %s %s\n",
3250 OSNAME, __DATE__, __TIME__));
3251 PerlIO_printf(PerlIO_stdout(),
3252 Perl_form(aTHX_ " OS Specific Release: %s\n",
3255 #if defined(LOCAL_PATCH_COUNT)
3256 if (LOCAL_PATCH_COUNT > 0)
3257 PerlIO_printf(PerlIO_stdout(),
3258 "\n(with %d registered patch%s, "
3259 "see perl -V for more detail)",
3261 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
3264 PerlIO_printf(PerlIO_stdout(),
3265 "\n\nCopyright 1987-2009, Larry Wall\n");
3266 #ifdef MACOS_TRADITIONAL
3267 PerlIO_printf(PerlIO_stdout(),
3268 "\nMac OS port Copyright 1991-2002, Matthias Neeracher;\n"
3269 "maintained by Chris Nandor\n");
3272 PerlIO_printf(PerlIO_stdout(),
3273 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
3276 PerlIO_printf(PerlIO_stdout(),
3277 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3278 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
3281 PerlIO_printf(PerlIO_stdout(),
3282 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
3283 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
3286 PerlIO_printf(PerlIO_stdout(),
3287 "atariST series port, ++jrb bammi@cadence.com\n");
3290 PerlIO_printf(PerlIO_stdout(),
3291 "BeOS port Copyright Tom Spindler, 1997-1999\n");
3294 PerlIO_printf(PerlIO_stdout(),
3295 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n");
3298 PerlIO_printf(PerlIO_stdout(),
3299 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
3302 PerlIO_printf(PerlIO_stdout(),
3303 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
3306 PerlIO_printf(PerlIO_stdout(),
3307 "VM/ESA port by Neale Ferguson, 1998-1999\n");
3310 PerlIO_printf(PerlIO_stdout(),
3311 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
3314 PerlIO_printf(PerlIO_stdout(),
3315 "MiNT port by Guido Flohr, 1997-1999\n");
3318 PerlIO_printf(PerlIO_stdout(),
3319 "EPOC port by Olaf Flebbe, 1999-2002\n");
3322 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
3323 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
3326 #ifdef __SYMBIAN32__
3327 PerlIO_printf(PerlIO_stdout(),
3328 "Symbian port by Nokia, 2004-2005\n");
3330 #ifdef BINARY_BUILD_NOTICE
3331 BINARY_BUILD_NOTICE;
3333 PerlIO_printf(PerlIO_stdout(),
3335 Perl may be copied only under the terms of either the Artistic License or the\n\
3336 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
3337 Complete documentation for Perl, including FAQ lists, should be found on\n\
3338 this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
3339 Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
3342 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
3343 PL_dowarn |= G_WARN_ON;
3348 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
3349 if (!specialWARN(PL_compiling.cop_warnings))
3350 PerlMemShared_free(PL_compiling.cop_warnings);
3351 PL_compiling.cop_warnings = pWARN_ALL ;
3355 PL_dowarn = G_WARN_ALL_OFF;
3356 if (!specialWARN(PL_compiling.cop_warnings))
3357 PerlMemShared_free(PL_compiling.cop_warnings);
3358 PL_compiling.cop_warnings = pWARN_NONE ;
3365 if (s[0] == '-') /* Additional switches on #! line. */
3370 #if defined(WIN32) || !defined(PERL_STRICT_CR)
3376 #ifdef ALTERNATE_SHEBANG
3377 case 'S': /* OS/2 needs -S on "extproc" line. */
3381 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
3386 /* compliments of Tom Christiansen */
3388 /* unexec() can be found in the Gnu emacs distribution */
3389 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
3392 Perl_my_unexec(pTHX)
3394 PERL_UNUSED_CONTEXT;
3396 SV * prog = newSVpv(BIN_EXP, 0);
3397 SV * file = newSVpv(PL_origfilename, 0);
3401 sv_catpvs(prog, "/perl");
3402 sv_catpvs(file, ".perldump");
3404 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3405 /* unexec prints msg to stderr in case of failure */
3406 PerlProc_exit(status);
3409 # include <lib$routines.h>
3410 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
3411 # elif defined(WIN32) || defined(__CYGWIN__)
3412 Perl_croak(aTHX_ "dump is not supported");
3414 ABORT(); /* for use with undump */
3419 /* initialize curinterp */
3425 # define PERLVAR(var,type)
3426 # define PERLVARA(var,n,type)
3427 # if defined(PERL_IMPLICIT_CONTEXT)
3428 # define PERLVARI(var,type,init) aTHX->var = init;
3429 # define PERLVARIC(var,type,init) aTHX->var = init;
3431 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
3432 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
3434 # include "intrpvar.h"
3440 # define PERLVAR(var,type)
3441 # define PERLVARA(var,n,type)
3442 # define PERLVARI(var,type,init) PL_##var = init;
3443 # define PERLVARIC(var,type,init) PL_##var = init;
3444 # include "intrpvar.h"
3451 /* As these are inside a structure, PERLVARI isn't capable of initialising
3453 PL_reg_oldcurpm = PL_reg_curpm = NULL;
3454 PL_reg_poscache = PL_reg_starttry = NULL;
3458 S_init_main_stash(pTHX)
3463 PL_curstash = PL_defstash = newHV();
3464 /* We know that the string "main" will be in the global shared string
3465 table, so it's a small saving to use it rather than allocate another
3467 PL_curstname = newSVpvs_share("main");
3468 gv = gv_fetchpvs("main::", GV_ADD|GV_NOTQUAL, SVt_PVHV);
3469 /* If we hadn't caused another reference to "main" to be in the shared
3470 string table above, then it would be worth reordering these two,
3471 because otherwise all we do is delete "main" from it as a consequence
3472 of the SvREFCNT_dec, only to add it again with hv_name_set */
3473 SvREFCNT_dec(GvHV(gv));
3474 hv_name_set(PL_defstash, "main", 4, 0);
3475 GvHV(gv) = MUTABLE_HV(SvREFCNT_inc_simple(PL_defstash));
3477 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpvs("INC", GV_ADD|GV_NOTQUAL,
3479 SvREFCNT_inc_simple_void(PL_incgv); /* Don't allow it to be freed */
3480 GvMULTI_on(PL_incgv);
3481 PL_hintgv = gv_fetchpvs("\010", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^H */
3482 GvMULTI_on(PL_hintgv);
3483 PL_defgv = gv_fetchpvs("_", GV_ADD|GV_NOTQUAL, SVt_PVAV);
3484 SvREFCNT_inc_simple_void(PL_defgv);
3485 PL_errgv = gv_HVadd(gv_fetchpvs("@", GV_ADD|GV_NOTQUAL, SVt_PV));
3486 SvREFCNT_inc_simple_void(PL_errgv);
3487 GvMULTI_on(PL_errgv);
3488 PL_replgv = gv_fetchpvs("\022", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^R */
3489 GvMULTI_on(PL_replgv);
3490 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
3491 #ifdef PERL_DONT_CREATE_GVSV
3494 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
3496 PL_curstash = PL_defstash;
3497 CopSTASH_set(&PL_compiling, PL_defstash);
3498 PL_debstash = GvHV(gv_fetchpvs("DB::", GV_ADDMULTI, SVt_PVHV));
3499 PL_globalstash = GvHV(gv_fetchpvs("CORE::GLOBAL::", GV_ADDMULTI,
3501 /* We must init $/ before switches are processed. */
3502 sv_setpvs(get_sv("/", GV_ADD), "\n");
3506 S_open_script(pTHX_ const char *scriptname, bool dosearch,
3507 bool *suidscript, PerlIO **rsfpp)
3512 PERL_ARGS_ASSERT_OPEN_SCRIPT;
3515 PL_origfilename = savepvs("-e");
3518 /* if find_script() returns, it returns a malloc()-ed value */
3519 scriptname = PL_origfilename = find_script(scriptname, dosearch, NULL, 1);
3521 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
3522 const char *s = scriptname + 8;
3528 * Tell apart "normal" usage of fdscript, e.g.
3529 * with bash on FreeBSD:
3530 * perl <( echo '#!perl -DA'; echo 'print "$0\n"')
3531 * from usage in suidperl.
3532 * Does any "normal" usage leave garbage after the number???
3533 * Is it a mistake to use a similar /dev/fd/ construct for
3538 * Be supersafe and do some sanity-checks.
3539 * Still, can we be sure we got the right thing?
3542 Perl_croak(aTHX_ "Wrong syntax (suid) fd script name \"%s\"\n", s);
3545 Perl_croak(aTHX_ "Missing (suid) fd script name\n");
3547 scriptname = savepv(s + 1);
3548 Safefree(PL_origfilename);
3549 PL_origfilename = (char *)scriptname;
3554 CopFILE_free(PL_curcop);
3555 CopFILE_set(PL_curcop, PL_origfilename);
3556 if (*PL_origfilename == '-' && PL_origfilename[1] == '\0')
3557 scriptname = (char *)"";
3558 if (fdscript >= 0) {
3559 *rsfpp = PerlIO_fdopen(fdscript,PERL_SCRIPT_MODE);
3560 # if defined(HAS_FCNTL) && defined(F_SETFD)
3562 /* ensure close-on-exec */
3563 fcntl(PerlIO_fileno(*rsfpp),F_SETFD,1);
3566 else if (!*scriptname) {
3567 forbid_setid(0, *suidscript);
3568 *rsfpp = PerlIO_stdin();
3571 #ifdef FAKE_BIT_BUCKET
3572 /* This hack allows one not to have /dev/null (or BIT_BUCKET as it
3573 * is called) and still have the "-e" work. (Believe it or not,
3574 * a /dev/null is required for the "-e" to work because source
3575 * filter magic is used to implement it. ) This is *not* a general
3576 * replacement for a /dev/null. What we do here is create a temp
3577 * file (an empty file), open up that as the script, and then
3578 * immediately close and unlink it. Close enough for jazz. */
3579 #define FAKE_BIT_BUCKET_PREFIX "/tmp/perlnull-"
3580 #define FAKE_BIT_BUCKET_SUFFIX "XXXXXXXX"
3581 #define FAKE_BIT_BUCKET_TEMPLATE FAKE_BIT_BUCKET_PREFIX FAKE_BIT_BUCKET_SUFFIX
3582 char tmpname[sizeof(FAKE_BIT_BUCKET_TEMPLATE)] = {
3583 FAKE_BIT_BUCKET_TEMPLATE
3585 const char * const err = "Failed to create a fake bit bucket";
3586 if (strEQ(scriptname, BIT_BUCKET)) {
3587 #ifdef HAS_MKSTEMP /* Hopefully mkstemp() is safe here. */
3588 int tmpfd = mkstemp(tmpname);
3590 scriptname = tmpname;
3593 Perl_croak(aTHX_ err);
3596 scriptname = mktemp(tmpname);
3598 Perl_croak(aTHX_ err);
3603 *rsfpp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
3604 #ifdef FAKE_BIT_BUCKET
3605 if (memEQ(scriptname, FAKE_BIT_BUCKET_PREFIX,
3606 sizeof(FAKE_BIT_BUCKET_PREFIX) - 1)
3607 && strlen(scriptname) == sizeof(tmpname) - 1) {
3610 scriptname = BIT_BUCKET;
3612 # if defined(HAS_FCNTL) && defined(F_SETFD)
3614 /* ensure close-on-exec */
3615 fcntl(PerlIO_fileno(*rsfpp),F_SETFD,1);
3619 /* PSz 16 Sep 03 Keep neat error message */
3621 Perl_croak(aTHX_ "Can't open "BIT_BUCKET": %s\n", Strerror(errno));
3623 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3624 CopFILE(PL_curcop), Strerror(errno));
3630 * I_SYSSTATVFS HAS_FSTATVFS
3632 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
3633 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
3634 * here so that metaconfig picks them up. */
3637 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
3638 /* Don't even need this function. */
3641 S_validate_suid(pTHX_ PerlIO *rsfp)
3643 PERL_ARGS_ASSERT_VALIDATE_SUID;
3645 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
3648 PerlLIO_fstat(PerlIO_fileno(rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3649 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3651 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3654 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3655 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3656 /* not set-id, must be wrapped */
3659 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3662 S_find_beginning(pTHX_ SV* linestr_sv, PerlIO *rsfp)
3666 register const char *s2;
3667 #ifdef MACOS_TRADITIONAL
3671 PERL_ARGS_ASSERT_FIND_BEGINNING;
3673 /* skip forward in input to the real script? */
3675 #ifdef MACOS_TRADITIONAL
3676 /* Since the Mac OS does not honor #! arguments for us, we do it ourselves */
3678 while (PL_doextract || gMacPerl_AlwaysExtract) {
3679 if ((s = sv_gets(linestr_sv, rsfp, 0)) == NULL) {
3680 if (!gMacPerl_AlwaysExtract)
3681 Perl_croak(aTHX_ "No Perl script found in input\n");
3683 if (PL_doextract) /* require explicit override ? */
3684 if (!OverrideExtract(PL_origfilename))
3685 Perl_croak(aTHX_ "User aborted script\n");
3687 PL_doextract = FALSE;
3689 /* Pater peccavi, file does not have #! */
3690 PerlIO_rewind(rsfp);
3695 while (PL_doextract) {
3696 if ((s = sv_gets(linestr_sv, rsfp, 0)) == NULL)
3697 Perl_croak(aTHX_ "No Perl script found in input\n");
3700 if (*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))) {
3701 PerlIO_ungetc(rsfp, '\n'); /* to keep line count right */
3702 PL_doextract = FALSE;
3703 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3705 while (*s == ' ' || *s == '\t') s++;
3707 while (isDIGIT(s2[-1]) || s2[-1] == '-' || s2[-1] == '.'
3708 || s2[-1] == '_') s2--;
3709 if (strnEQ(s2-4,"perl",4))
3710 while ((s = moreswitches(s)))
3713 #ifdef MACOS_TRADITIONAL
3714 /* We are always searching for the #!perl line in MacPerl,
3715 * so if we find it, still keep the line count correct
3716 * by counting lines we already skipped over
3718 for (; maclines > 0 ; maclines--)
3719 PerlIO_ungetc(rsfp, '\n');
3723 /* gMacPerl_AlwaysExtract is false in MPW tool */
3724 } else if (gMacPerl_AlwaysExtract) {
3736 PL_uid = PerlProc_getuid();
3737 PL_euid = PerlProc_geteuid();
3738 PL_gid = PerlProc_getgid();
3739 PL_egid = PerlProc_getegid();
3741 PL_uid |= PL_gid << 16;
3742 PL_euid |= PL_egid << 16;
3744 /* Should not happen: */
3745 CHECK_MALLOC_TAINT(PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3746 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3749 * Should go by suidscript, not uid!=euid: why disallow
3750 * system("ls") in scripts run from setuid things?
3751 * Or, is this run before we check arguments and set suidscript?
3752 * What about SETUID_SCRIPTS_ARE_SECURE_NOW: could we use fdscript then?
3753 * (We never have suidscript, can we be sure to have fdscript?)
3754 * Or must then go by UID checks? See comments in forbid_setid also.
3758 /* This is used very early in the lifetime of the program,
3759 * before even the options are parsed, so PL_tainting has
3760 * not been initialized properly. */
3762 Perl_doing_taint(int argc, char *argv[], char *envp[])
3764 #ifndef PERL_IMPLICIT_SYS
3765 /* If we have PERL_IMPLICIT_SYS we can't call getuid() et alia
3766 * before we have an interpreter-- and the whole point of this
3767 * function is to be called at such an early stage. If you are on
3768 * a system with PERL_IMPLICIT_SYS but you do have a concept of
3769 * "tainted because running with altered effective ids', you'll
3770 * have to add your own checks somewhere in here. The two most
3771 * known samples of 'implicitness' are Win32 and NetWare, neither
3772 * of which has much of concept of 'uids'. */
3773 int uid = PerlProc_getuid();
3774 int euid = PerlProc_geteuid();
3775 int gid = PerlProc_getgid();
3776 int egid = PerlProc_getegid();
3783 if (uid && (euid != uid || egid != gid))
3785 #endif /* !PERL_IMPLICIT_SYS */
3786 /* This is a really primitive check; environment gets ignored only
3787 * if -T are the first chars together; otherwise one gets
3788 * "Too late" message. */
3789 if ( argc > 1 && argv[1][0] == '-'
3790 && (argv[1][1] == 't' || argv[1][1] == 'T') )
3795 /* Passing the flag as a single char rather than a string is a slight space
3796 optimisation. The only message that isn't /^-.$/ is
3797 "program input from stdin", which is substituted in place of '\0', which
3798 could never be a command line flag. */
3800 S_forbid_setid(pTHX_ const char flag, const bool suidscript) /* g */
3803 char string[3] = "-x";
3804 const char *message = "program input from stdin";
3811 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
3812 if (PL_euid != PL_uid)
3813 Perl_croak(aTHX_ "No %s allowed while running setuid", message);
3814 if (PL_egid != PL_gid)
3815 Perl_croak(aTHX_ "No %s allowed while running setgid", message);
3816 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3818 Perl_croak(aTHX_ "No %s allowed with (suid) fdscript", message);
3822 Perl_init_debugger(pTHX)
3825 HV * const ostash = PL_curstash;
3827 PL_curstash = PL_debstash;
3828 PL_dbargs = GvAV(gv_AVadd((gv_fetchpvs("DB::args", GV_ADDMULTI,
3830 AvREAL_off(PL_dbargs);
3831 PL_DBgv = gv_fetchpvs("DB::DB", GV_ADDMULTI, SVt_PVGV);
3832 PL_DBline = gv_fetchpvs("DB::dbline", GV_ADDMULTI, SVt_PVAV);
3833 PL_DBsub = gv_HVadd(gv_fetchpvs("DB::sub", GV_ADDMULTI, SVt_PVHV));
3834 PL_DBsingle = GvSV((gv_fetchpvs("DB::single", GV_ADDMULTI, SVt_PV)));
3835 sv_setiv(PL_DBsingle, 0);
3836 PL_DBtrace = GvSV((gv_fetchpvs("DB::trace", GV_ADDMULTI, SVt_PV)));
3837 sv_setiv(PL_DBtrace, 0);
3838 PL_DBsignal = GvSV((gv_fetchpvs("DB::signal", GV_ADDMULTI, SVt_PV)));
3839 sv_setiv(PL_DBsignal, 0);
3840 PL_curstash = ostash;
3843 #ifndef STRESS_REALLOC
3844 #define REASONABLE(size) (size)
3846 #define REASONABLE(size) (1) /* unreasonable */
3850 Perl_init_stacks(pTHX)
3853 /* start with 128-item stack and 8K cxstack */
3854 PL_curstackinfo = new_stackinfo(REASONABLE(128),
3855 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3856 PL_curstackinfo->si_type = PERLSI_MAIN;
3857 PL_curstack = PL_curstackinfo->si_stack;
3858 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
3860 PL_stack_base = AvARRAY(PL_curstack);
3861 PL_stack_sp = PL_stack_base;
3862 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
3864 Newx(PL_tmps_stack,REASONABLE(128),SV*);
3867 PL_tmps_max = REASONABLE(128);
3869 Newx(PL_markstack,REASONABLE(32),I32);
3870 PL_markstack_ptr = PL_markstack;
3871 PL_markstack_max = PL_markstack + REASONABLE(32);
3875 Newx(PL_scopestack,REASONABLE(32),I32);
3876 PL_scopestack_ix = 0;
3877 PL_scopestack_max = REASONABLE(32);
3879 Newx(PL_savestack,REASONABLE(128),ANY);
3880 PL_savestack_ix = 0;
3881 PL_savestack_max = REASONABLE(128);
3890 while (PL_curstackinfo->si_next)
3891 PL_curstackinfo = PL_curstackinfo->si_next;
3892 while (PL_curstackinfo) {
3893 PERL_SI *p = PL_curstackinfo->si_prev;
3894 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3895 Safefree(PL_curstackinfo->si_cxstack);
3896 Safefree(PL_curstackinfo);
3897 PL_curstackinfo = p;
3899 Safefree(PL_tmps_stack);
3900 Safefree(PL_markstack);
3901 Safefree(PL_scopestack);
3902 Safefree(PL_savestack);
3907 S_init_predump_symbols(pTHX)
3913 sv_setpvs(get_sv("\"", GV_ADD), " ");
3914 PL_ofsgv = (GV*)SvREFCNT_inc(gv_fetchpvs(",", GV_ADD|GV_NOTQUAL, SVt_PV));
3916 PL_stdingv = gv_fetchpvs("STDIN", GV_ADD|GV_NOTQUAL, SVt_PVIO);
3917 GvMULTI_on(PL_stdingv);
3918 io = GvIOp(PL_stdingv);
3919 IoTYPE(io) = IoTYPE_RDONLY;
3920 IoIFP(io) = PerlIO_stdin();
3921 tmpgv = gv_fetchpvs("stdin", GV_ADD|GV_NOTQUAL, SVt_PV);
3923 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
3925 tmpgv = gv_fetchpvs("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
3928 IoTYPE(io) = IoTYPE_WRONLY;
3929 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
3931 tmpgv = gv_fetchpvs("stdout", GV_ADD|GV_NOTQUAL, SVt_PV);
3933 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
3935 PL_stderrgv = gv_fetchpvs("STDERR", GV_ADD|GV_NOTQUAL, SVt_PVIO);
3936 GvMULTI_on(PL_stderrgv);
3937 io = GvIOp(PL_stderrgv);
3938 IoTYPE(io) = IoTYPE_WRONLY;
3939 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
3940 tmpgv = gv_fetchpvs("stderr", GV_ADD|GV_NOTQUAL, SVt_PV);
3942 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
3944 PL_statname = newSV(0); /* last filename we did stat on */
3946 Safefree(PL_osname);
3947 PL_osname = savepv(OSNAME);
3951 Perl_init_argv_symbols(pTHX_ register int argc, register char **argv)
3955 PERL_ARGS_ASSERT_INIT_ARGV_SYMBOLS;
3957 argc--,argv++; /* skip name of script */
3958 if (PL_doswitches) {
3959 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3963 if (argv[0][1] == '-' && !argv[0][2]) {
3967 if ((s = strchr(argv[0], '='))) {
3968 const char *const start_name = argv[0] + 1;
3969 sv_setpv(GvSV(gv_fetchpvn_flags(start_name, s - start_name,
3970 TRUE, SVt_PV)), s + 1);
3973 sv_setiv(GvSV(gv_fetchpv(argv[0]+1, GV_ADD, SVt_PV)),1);
3976 if ((PL_argvgv = gv_fetchpvs("ARGV", GV_ADD|GV_NOTQUAL, SVt_PVAV))) {
3977 GvMULTI_on(PL_argvgv);
3978 (void)gv_AVadd(PL_argvgv);
3979 av_clear(GvAVn(PL_argvgv));
3980 for (; argc > 0; argc--,argv++) {
3981 SV * const sv = newSVpv(argv[0],0);
3982 av_push(GvAVn(PL_argvgv),sv);
3983 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
3984 if (PL_unicode & PERL_UNICODE_ARGV_FLAG)
3987 if (PL_unicode & PERL_UNICODE_WIDESYSCALLS_FLAG) /* Sarathy? */
3988 (void)sv_utf8_decode(sv);
3994 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
3999 PERL_ARGS_ASSERT_INIT_POSTDUMP_SYMBOLS;
4001 PL_toptarget = newSV_type(SVt_PVFM);
4002 sv_setpvs(PL_toptarget, "");
4003 PL_bodytarget = newSV_type(SVt_PVFM);
4004 sv_setpvs(PL_bodytarget, "");
4005 PL_formtarget = PL_bodytarget;
4009 init_argv_symbols(argc,argv);
4011 if ((tmpgv = gv_fetchpvs("0", GV_ADD|GV_NOTQUAL, SVt_PV))) {
4012 #ifdef MACOS_TRADITIONAL
4013 /* $0 is not majick on a Mac */
4014 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
4016 sv_setpv(GvSV(tmpgv),PL_origfilename);
4018 GV * const gv = gv_fetchpv("0", GV_ADD, SVt_PV);
4020 sv_magic(GvSV(gv), MUTABLE_SV(gv), PERL_MAGIC_sv, "0", 1);
4024 if ((PL_envgv = gv_fetchpvs("ENV", GV_ADD|GV_NOTQUAL, SVt_PVHV))) {
4026 bool env_is_not_environ;
4027 GvMULTI_on(PL_envgv);
4028 hv = GvHVn(PL_envgv);
4029 hv_magic(hv, NULL, PERL_MAGIC_env);
4031 #ifdef USE_ENVIRON_ARRAY
4032 /* Note that if the supplied env parameter is actually a copy
4033 of the global environ then it may now point to free'd memory
4034 if the environment has been modified since. To avoid this
4035 problem we treat env==NULL as meaning 'use the default'
4039 env_is_not_environ = env != environ;
4040 if (env_is_not_environ
4041 # ifdef USE_ITHREADS
4042 && PL_curinterp == aTHX
4051 for (; *env; env++) {
4054 if (!(s = strchr(old_var,'=')) || s == old_var)
4057 #if defined(MSDOS) && !defined(DJGPP)
4059 (void)strupr(old_var);
4062 sv = newSVpv(s+1, 0);
4063 (void)hv_store(hv, old_var, s - old_var, sv, 0);
4064 if (env_is_not_environ)
4068 #endif /* USE_ENVIRON_ARRAY */
4069 #endif /* !PERL_MICRO */
4072 if ((tmpgv = gv_fetchpvs("$", GV_ADD|GV_NOTQUAL, SVt_PV))) {
4073 SvREADONLY_off(GvSV(tmpgv));
4074 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
4075 SvREADONLY_on(GvSV(tmpgv));
4077 #ifdef THREADS_HAVE_PIDS
4078 PL_ppid = (IV)getppid();
4081 /* touch @F array to prevent spurious warnings 20020415 MJD */
4083 (void) get_av("main::F", GV_ADD | GV_ADDMULTI);
4088 S_init_perllib(pTHX)
4092 const char *perl5lib = NULL;
4101 perl5lib = PerlEnv_getenv("PERL5LIB");
4103 * It isn't possible to delete an environment variable with
4104 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4105 * case we treat PERL5LIB as undefined if it has a zero-length value.
4107 #if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
4108 if (perl5lib && *perl5lib != '\0')
4112 incpush_use_sep(perl5lib, 0, INCPUSH_ADD_SUB_DIRS);
4114 s = PerlEnv_getenv("PERLLIB");
4116 incpush_use_sep(s, 0, 0);
4119 /* Treat PERL5?LIB as a possible search list logical name -- the
4120 * "natural" VMS idiom for a Unix path string. We allow each
4121 * element to be a set of |-separated directories for compatibility.
4125 if (my_trnlnm("PERL5LIB",buf,0))
4127 incpush_use_sep(buf, 0, INCPUSH_ADD_SUB_DIRS);
4128 } while (my_trnlnm("PERL5LIB",buf,++idx));
4130 while (my_trnlnm("PERLLIB",buf,idx++))
4131 incpush_use_sep(buf, 0, 0);
4136 /* Use the ~-expanded versions of APPLLIB (undocumented),
4137 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
4140 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP),
4141 INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4144 #ifdef MACOS_TRADITIONAL
4147 SV * privdir = newSV(0);
4148 char * macperl = PerlEnv_getenv("MACPERL");
4154 S_incpush_use_sep(aTHX_ STR_WITH_LEN(ARCHLIB_EXP), INCPUSH_CAN_RELOCATE);
4157 Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl);
4158 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
4159 incpush_use_sep(SvPVX(privdir), SvCUR(privdir),
4160 INCPUSH_ADD_SUB_DIRS);
4161 Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl);
4162 if (PerlLIO_stat(SvPVX(privdir), SvCUR(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
4163 incpush_use_sep(SvPVX(privdir), SvCUR(privdir),
4164 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),
4176 INCPUSH_CAN_RELOCATE);
4182 /* this picks up sitearch as well */
4183 s = win32_get_sitelib(PERL_FS_VERSION, &len);
4185 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4187 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_EXP), INCPUSH_CAN_RELOCATE);
4191 #ifdef PERL_VENDORARCH_EXP
4192 /* vendorarch is always relative to vendorlib on Windows for
4193 * DLL-based path intuition to work correctly */
4194 # if !defined(WIN32)
4195 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORARCH_EXP),
4196 INCPUSH_CAN_RELOCATE);
4200 #ifdef PERL_VENDORLIB_EXP
4202 /* this picks up vendorarch as well */
4203 s = win32_get_vendorlib(PERL_FS_VERSION, &len);
4205 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4207 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_EXP),
4208 INCPUSH_CAN_RELOCATE);
4213 S_incpush_use_sep(aTHX_ STR_WITH_LEN(ARCHLIB_EXP), INCPUSH_CAN_RELOCATE);
4217 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
4221 s = win32_get_privlib(PERL_FS_VERSION, &len);
4223 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4226 S_incpush_use_sep(aTHX_ PRIVLIB_EXP, 0, INCPUSH_CAN_RELOCATE);
4228 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PRIVLIB_EXP), INCPUSH_CAN_RELOCATE);
4232 #ifdef PERL_OTHERLIBDIRS
4233 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS),
4234 INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_NOT_BASEDIR
4235 |INCPUSH_CAN_RELOCATE);
4237 #endif /* MACOS_TRADITIONAL */
4242 * It isn't possible to delete an environment variable with
4243 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4244 * case we treat PERL5LIB as undefined if it has a zero-length value.
4246 #if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
4247 if (perl5lib && *perl5lib != '\0')
4251 incpush_use_sep(perl5lib, 0,
4252 INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
4254 /* Treat PERL5?LIB as a possible search list logical name -- the
4255 * "natural" VMS idiom for a Unix path string. We allow each
4256 * element to be a set of |-separated directories for compatibility.
4260 if (my_trnlnm("PERL5LIB",buf,0))
4262 incpush_use_sep(buf, 0,
4263 INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
4264 } while (my_trnlnm("PERL5LIB",buf,++idx));
4268 /* Use the ~-expanded versions of APPLLIB (undocumented),
4269 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
4272 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP), INCPUSH_ADD_OLD_VERS
4273 |INCPUSH_NOT_BASEDIR|INCPUSH_CAN_RELOCATE);
4276 #ifndef MACOS_TRADITIONAL
4277 #if defined(SITELIB_STEM) && defined(PERL_INC_VERSION_LIST)
4278 /* Search for version-specific dirs below here */
4279 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_STEM),
4280 INCPUSH_ADD_OLD_VERS|INCPUSH_CAN_RELOCATE);
4284 #if defined(PERL_VENDORLIB_STEM) && defined(PERL_INC_VERSION_LIST)
4285 /* Search for version-specific dirs below here */
4286 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_STEM),
4287 INCPUSH_ADD_OLD_VERS|INCPUSH_CAN_RELOCATE);
4290 #ifdef PERL_OTHERLIBDIRS
4291 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS),
4292 INCPUSH_ADD_OLD_VERS|INCPUSH_ADD_ARCHONLY_SUB_DIRS
4293 |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, SV *const stem)
4327 PERL_ARGS_ASSERT_INCPUSH_IF_EXISTS;
4329 if (PerlLIO_stat(SvPVX_const(dir), &tmpstatbuf) >= 0 &&
4330 S_ISDIR(tmpstatbuf.st_mode)) {
4332 dir = newSVsv(stem);
4334 /* Truncate dir back to stem. */
4335 SvCUR_set(dir, SvCUR(stem));
4341 S_incpush(pTHX_ const char *const dir, STRLEN len, U32 flags)
4344 const U8 using_sub_dirs
4345 = (U8)flags & (INCPUSH_ADD_VERSIONED_SUB_DIRS
4346 |INCPUSH_ADD_ARCHONLY_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
4347 const U8 add_versioned_sub_dirs
4348 = (U8)flags & INCPUSH_ADD_VERSIONED_SUB_DIRS;
4349 const U8 add_archonly_sub_dirs
4350 = (U8)flags & INCPUSH_ADD_ARCHONLY_SUB_DIRS;
4351 #ifdef PERL_INC_VERSION_LIST
4352 const U8 addoldvers = (U8)flags & INCPUSH_ADD_OLD_VERS;
4354 const U8 canrelocate = (U8)flags & INCPUSH_CAN_RELOCATE;
4355 const U8 unshift = (U8)flags & INCPUSH_UNSHIFT;
4356 const U8 push_basedir = (flags & INCPUSH_NOT_BASEDIR) ? 0 : 1;
4357 AV *const inc = GvAVn(PL_incgv);
4359 PERL_ARGS_ASSERT_INCPUSH;
4362 /* Could remove this vestigial extra block, if we don't mind a lot of
4363 re-indenting diff noise. */
4366 /* Change 20189146be79a0596543441fa369c6bf7f85103f, to fix RT#6665,
4367 arranged to unshift #! line -I onto the front of @INC. However,
4368 -I can add version and architecture specific libraries, and they
4369 need to go first. The old code assumed that it was always
4370 pushing. Hence to make it work, need to push the architecture
4371 (etc) libraries onto a temporary array, then "unshift" that onto
4372 the front of @INC. */
4373 AV *const av = (using_sub_dirs) ? (unshift ? newAV() : inc) : NULL;
4376 /* I am not convinced that this is valid when PERLLIB_MANGLE is
4377 defined to so something (in os2/os2.c), but the code has been
4378 this way, ignoring any possible changed of length, since
4379 760ac839baf413929cd31cc32ffd6dba6b781a81 (5.003_02) so I'll leave
4381 libdir = newSVpvn(PERLLIB_MANGLE(dir, len), len);
4383 libdir = newSVpv(PERLLIB_MANGLE(dir, 0), 0);
4386 #ifdef MACOS_TRADITIONAL
4387 if (!strchr(SvPVX(libdir), ':')) {
4390 sv_setpv(libdir, MacPerl_CanonDir(SvPVX(libdir), buf, 0));
4392 if (SvPVX(libdir)[SvCUR(libdir)-1] != ':')
4393 sv_catpvs(libdir, ":");
4396 /* Do the if() outside the #ifdef to avoid warnings about an unused
4399 #ifdef PERL_RELOCATABLE_INC
4401 * Relocatable include entries are marked with a leading .../
4404 * 0: Remove that leading ".../"
4405 * 1: Remove trailing executable name (anything after the last '/')
4406 * from the perl path to give a perl prefix
4408 * While the @INC element starts "../" and the prefix ends with a real
4409 * directory (ie not . or ..) chop that real directory off the prefix
4410 * and the leading "../" from the @INC element. ie a logical "../"
4412 * Finally concatenate the prefix and the remainder of the @INC element
4413 * The intent is that /usr/local/bin/perl and .../../lib/perl5
4414 * generates /usr/local/lib/perl5
4416 const char *libpath = SvPVX(libdir);
4417 STRLEN libpath_len = SvCUR(libdir);
4418 if (libpath_len >= 4 && memEQ (libpath, ".../", 4)) {
4420 SV * const caret_X = get_sv("\030", 0);
4421 /* Going to use the SV just as a scratch buffer holding a C
4427 /* $^X is *the* source of taint if tainting is on, hence
4428 SvPOK() won't be true. */
4430 assert(SvPOKp(caret_X));
4431 prefix_sv = newSVpvn_flags(SvPVX(caret_X), SvCUR(caret_X),
4433 /* Firstly take off the leading .../
4434 If all else fail we'll do the paths relative to the current
4436 sv_chop(libdir, libpath + 4);
4437 /* Don't use SvPV as we're intentionally bypassing taining,
4438 mortal copies that the mg_get of tainting creates, and
4439 corruption that seems to come via the save stack.
4440 I guess that the save stack isn't correctly set up yet. */
4441 libpath = SvPVX(libdir);
4442 libpath_len = SvCUR(libdir);
4444 /* This would work more efficiently with memrchr, but as it's
4445 only a GNU extension we'd need to probe for it and
4446 implement our own. Not hard, but maybe not worth it? */
4448 prefix = SvPVX(prefix_sv);
4449 lastslash = strrchr(prefix, '/');
4451 /* First time in with the *lastslash = '\0' we just wipe off
4452 the trailing /perl from (say) /usr/foo/bin/perl
4456 while ((*lastslash = '\0'), /* Do that, come what may. */
4457 (libpath_len >= 3 && memEQ(libpath, "../", 3)
4458 && (lastslash = strrchr(prefix, '/')))) {
4459 if (lastslash[1] == '\0'
4460 || (lastslash[1] == '.'
4461 && (lastslash[2] == '/' /* ends "/." */
4462 || (lastslash[2] == '/'
4463 && lastslash[3] == '/' /* or "/.." */
4465 /* Prefix ends "/" or "/." or "/..", any of which
4466 are fishy, so don't do any more logical cleanup.
4470 /* Remove leading "../" from path */
4473 /* Next iteration round the loop removes the last
4474 directory name from prefix by writing a '\0' in
4475 the while clause. */
4477 /* prefix has been terminated with a '\0' to the correct
4478 length. libpath points somewhere into the libdir SV.
4479 We need to join the 2 with '/' and drop the result into
4481 tempsv = Perl_newSVpvf(aTHX_ "%s/%s", prefix, libpath);
4482 SvREFCNT_dec(libdir);
4483 /* And this is the new libdir. */
4486 (PL_uid != PL_euid || PL_gid != PL_egid)) {
4487 /* Need to taint reloccated paths if running set ID */
4488 SvTAINTED_on(libdir);
4491 SvREFCNT_dec(prefix_sv);
4496 * BEFORE pushing libdir onto @INC we may first push version- and
4497 * archname-specific sub-directories.
4499 if (using_sub_dirs) {
4501 #ifdef PERL_INC_VERSION_LIST
4502 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
4503 const char * const incverlist[] = { PERL_INC_VERSION_LIST };
4504 const char * const *incver;
4511 if ((unix = tounixspec_ts(SvPV(libdir,len),NULL)) != NULL) {
4513 while (unix[len-1] == '/') len--; /* Cosmetic */
4514 sv_usepvn(libdir,unix,len);
4517 PerlIO_printf(Perl_error_log,
4518 "Failed to unixify @INC element \"%s\"\n",
4522 subdir = newSVsv(libdir);
4524 if (add_versioned_sub_dirs) {
4525 #ifdef MACOS_TRADITIONAL
4526 #define PERL_ARCH_FMT_PREFIX ""
4527 #define PERL_ARCH_FMT_SUFFIX ":"
4528 #define PERL_ARCH_FMT_PATH PERL_FS_VERSION ""
4530 #define PERL_ARCH_FMT_PREFIX "/"
4531 #define PERL_ARCH_FMT_SUFFIX ""
4532 #define PERL_ARCH_FMT_PATH "/" PERL_FS_VERSION
4534 /* .../version/archname if -d .../version/archname */
4535 sv_catpvs(subdir, PERL_ARCH_FMT_PATH \
4536 PERL_ARCH_FMT_PREFIX ARCHNAME PERL_ARCH_FMT_SUFFIX);
4537 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4539 /* .../version if -d .../version */
4540 sv_catpvs(subdir, PERL_ARCH_FMT_PATH);
4541 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4544 #ifdef PERL_INC_VERSION_LIST
4546 for (incver = incverlist; *incver; incver++) {
4547 /* .../xxx if -d .../xxx */
4548 Perl_sv_catpvf(aTHX_ subdir, PERL_ARCH_FMT_PREFIX \
4549 "%s" PERL_ARCH_FMT_SUFFIX, *incver);
4550 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4555 if (add_archonly_sub_dirs) {
4556 /* .../archname if -d .../archname */
4558 PERL_ARCH_FMT_PREFIX ARCHNAME PERL_ARCH_FMT_SUFFIX);
4559 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4563 assert (SvREFCNT(subdir) == 1);
4564 SvREFCNT_dec(subdir);
4567 /* finally add this lib directory at the end of @INC */
4569 U32 extra = av_len(av) + 1;
4570 av_unshift(inc, extra + push_basedir);
4572 av_store(inc, extra, libdir);
4574 /* av owns a reference, av_store() expects to be donated a
4575 reference, and av expects to be sane when it's cleared.
4576 If I wanted to be naughty and wrong, I could peek inside the
4577 implementation of av_clear(), realise that it uses
4578 SvREFCNT_dec() too, so av's array could be a run of NULLs,
4579 and so directly steal from it (with a memcpy() to inc, and
4580 then memset() to NULL them out. But people copy code from the
4581 core expecting it to be best practise, so let's use the API.
4582 Although studious readers will note that I'm not checking any
4584 av_store(inc, extra, SvREFCNT_inc(*av_fetch(av, extra, FALSE)));
4588 else if (push_basedir) {
4589 av_push(inc, libdir);
4592 if (!push_basedir) {
4593 assert (SvREFCNT(libdir) == 1);
4594 SvREFCNT_dec(libdir);
4600 S_incpush_use_sep(pTHX_ const char *p, STRLEN len, U32 flags)
4604 /* This logic has been broken out from S_incpush(). It may be possible to
4607 PERL_ARGS_ASSERT_INCPUSH_USE_SEP;
4614 /* Break at all separators */
4615 while ((s = (const char*)memchr(p, PERLLIB_SEP, end - p))) {
4617 /* skip any consecutive separators */
4619 /* Uncomment the next line for PATH semantics */
4620 /* But you'll need to write tests */
4621 /* av_push(GvAVn(PL_incgv), newSVpvs(".")); */
4623 incpush(p, (STRLEN)(s - p), flags);
4628 incpush(p, (STRLEN)(end - p), flags);
4633 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
4637 volatile const line_t oldline = PL_curcop ? CopLINE(PL_curcop) : 0;
4643 PERL_ARGS_ASSERT_CALL_LIST;
4645 while (av_len(paramList) >= 0) {
4646 cv = MUTABLE_CV(av_shift(paramList));
4648 if (paramList == PL_beginav) {
4649 /* save PL_beginav for compiler */
4650 Perl_av_create_and_push(aTHX_ &PL_beginav_save, MUTABLE_SV(cv));
4652 else if (paramList == PL_checkav) {
4653 /* save PL_checkav for compiler */
4654 Perl_av_create_and_push(aTHX_ &PL_checkav_save, MUTABLE_SV(cv));
4656 else if (paramList == PL_unitcheckav) {
4657 /* save PL_unitcheckav for compiler */
4658 Perl_av_create_and_push(aTHX_ &PL_unitcheckav_save, MUTABLE_SV(cv));
4669 PL_madskills |= 16384;
4674 PL_madskills &= ~16384;
4677 (void)SvPV_const(atsv, len);
4679 PL_curcop = &PL_compiling;
4680 CopLINE_set(PL_curcop, oldline);
4681 if (paramList == PL_beginav)
4682 sv_catpvs(atsv, "BEGIN failed--compilation aborted");
4684 Perl_sv_catpvf(aTHX_ atsv,
4685 "%s failed--call queue aborted",
4686 paramList == PL_checkav ? "CHECK"
4687 : paramList == PL_initav ? "INIT"
4688 : paramList == PL_unitcheckav ? "UNITCHECK"
4690 while (PL_scopestack_ix > oldscope)
4693 Perl_croak(aTHX_ "%"SVf"", SVfARG(atsv));
4700 /* my_exit() was called */
4701 while (PL_scopestack_ix > oldscope)
4704 PL_curstash = PL_defstash;
4705 PL_curcop = &PL_compiling;
4706 CopLINE_set(PL_curcop, oldline);
4708 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
4709 if (paramList == PL_beginav)
4710 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
4712 Perl_croak(aTHX_ "%s failed--call queue aborted",
4713 paramList == PL_checkav ? "CHECK"
4714 : paramList == PL_initav ? "INIT"
4715 : paramList == PL_unitcheckav ? "UNITCHECK"
4722 PL_curcop = &PL_compiling;
4723 CopLINE_set(PL_curcop, oldline);
4726 PerlIO_printf(Perl_error_log, "panic: restartop\n");
4735 Perl_my_exit(pTHX_ U32 status)
4746 STATUS_EXIT_SET(status);
4753 Perl_my_failure_exit(pTHX)
4757 /* We have been called to fall on our sword. The desired exit code
4758 * should be already set in STATUS_UNIX, but could be shifted over
4759 * by 8 bits. STATUS_UNIX_EXIT_SET will handle the cases where a
4762 * If an error code has not been set, then force the issue.
4764 if (MY_POSIX_EXIT) {
4766 /* According to the die_exit.t tests, if errno is non-zero */
4767 /* It should be used for the error status. */
4769 if (errno == EVMSERR) {
4770 STATUS_NATIVE = vaxc$errno;
4773 /* According to die_exit.t tests, if the child_exit code is */
4774 /* also zero, then we need to exit with a code of 255 */
4775 if ((errno != 0) && (errno < 256))
4776 STATUS_UNIX_EXIT_SET(errno);
4777 else if (STATUS_UNIX < 255) {
4778 STATUS_UNIX_EXIT_SET(255);
4783 /* The exit code could have been set by $? or vmsish which
4784 * means that it may not have fatal set. So convert
4785 * success/warning codes to fatal with out changing
4786 * the POSIX status code. The severity makes VMS native
4787 * status handling work, while UNIX mode programs use the
4788 * the POSIX exit codes.
4790 if ((STATUS_NATIVE & (STS$K_SEVERE|STS$K_ERROR)) == 0) {
4791 STATUS_NATIVE &= STS$M_COND_ID;
4792 STATUS_NATIVE |= STS$K_ERROR | STS$M_INHIB_MSG;
4796 /* Traditionally Perl on VMS always expects a Fatal Error. */
4797 if (vaxc$errno & 1) {
4799 /* So force success status to failure */
4800 if (STATUS_NATIVE & 1)
4805 STATUS_UNIX = EINTR; /* In case something cares */
4810 STATUS_NATIVE = vaxc$errno; /* Should already be this */
4812 /* Encode the severity code */
4813 severity = STATUS_NATIVE & STS$M_SEVERITY;
4814 STATUS_UNIX = (severity ? severity : 1) << 8;
4816 /* Perl expects this to be a fatal error */
4817 if (severity != STS$K_SEVERE)
4826 STATUS_UNIX_SET(errno);
4828 exitstatus = STATUS_UNIX >> 8;
4829 if (exitstatus & 255)
4830 STATUS_UNIX_SET(exitstatus);
4832 STATUS_UNIX_SET(255);
4839 S_my_exit_jump(pTHX)
4844 SvREFCNT_dec(PL_e_script);
4848 POPSTACK_TO(PL_mainstack);
4856 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen)
4859 const char * const p = SvPVX_const(PL_e_script);
4860 const char *nl = strchr(p, '\n');
4862 PERL_UNUSED_ARG(idx);
4863 PERL_UNUSED_ARG(maxlen);
4865 nl = (nl) ? nl+1 : SvEND(PL_e_script);
4867 filter_del(read_e_script);
4870 sv_catpvn(buf_sv, p, nl-p);
4871 sv_chop(PL_e_script, nl);
4877 * c-indentation-style: bsd
4879 * indent-tabs-mode: t
4882 * ex: set ts=8 sts=4 sw=4 noet: