3 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
4 * 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 by Larry Wall and others
6 * You may distribute under the terms of either the GNU General Public
7 * License or the Artistic License, as specified in the README file.
12 * A ship then new they built for him
13 * of mithril and of elven-glass
14 * --from Bilbo's song of EƤrendil
16 * [p.236 of _The Lord of the Rings_, II/i: "Many Meetings"]
19 /* This file contains the top-level functions that are used to create, use
20 * and destroy a perl interpreter, plus the functions used by XS code to
21 * call back into perl. Note that it does not contain the actual main()
22 * function of the interpreter; that can be found in perlmain.c
26 #define PERL_IN_PERL_C
28 #include "patchlevel.h" /* for local_patches */
34 /* XXX If this causes problems, set i_unistd=undef in the hint file. */
39 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41 # include <sys/wait.h>
49 char control[CMSG_SPACE(sizeof(int))];
66 #if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
67 char *getenv (char *); /* Usually in <stdlib.h> */
70 static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
72 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
73 /* Drop everything. Heck, don't even try to call it */
74 # define validate_suid(validarg, scriptname, fdscript, suidscript, linestr_sv, rsfp) NOOP
76 /* Drop almost everything */
77 # define validate_suid(validarg, scriptname, fdscript, suidscript, linestr_sv, rsfp) S_validate_suid(aTHX_ rsfp)
80 #define CALL_BODY_EVAL(myop) \
81 if (PL_op == (myop)) \
82 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX); \
86 #define CALL_BODY_SUB(myop) \
87 if (PL_op == (myop)) \
88 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); \
92 #define CALL_LIST_BODY(cv) \
93 PUSHMARK(PL_stack_sp); \
94 call_sv(MUTABLE_SV((cv)), G_EVAL|G_DISCARD);
97 S_init_tls_and_interp(PerlInterpreter *my_perl)
101 PERL_SET_INTERP(my_perl);
102 #if defined(USE_ITHREADS)
105 PERL_SET_THX(my_perl);
108 MUTEX_INIT(&PL_dollarzero_mutex);
110 #ifdef PERL_IMPLICIT_CONTEXT
111 MUTEX_INIT(&PL_my_ctx_mutex);
114 #if defined(USE_ITHREADS)
117 /* This always happens for non-ithreads */
120 PERL_SET_THX(my_perl);
125 /* these implement the PERL_SYS_INIT, PERL_SYS_INIT3, PERL_SYS_TERM macros */
128 Perl_sys_init(int* argc, char*** argv)
132 PERL_ARGS_ASSERT_SYS_INIT;
134 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
135 PERL_UNUSED_ARG(argv);
136 PERL_SYS_INIT_BODY(argc, argv);
140 Perl_sys_init3(int* argc, char*** argv, char*** env)
144 PERL_ARGS_ASSERT_SYS_INIT3;
146 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
147 PERL_UNUSED_ARG(argv);
148 PERL_UNUSED_ARG(env);
149 PERL_SYS_INIT3_BODY(argc, argv, env);
156 if (!PL_veto_cleanup) {
157 PERL_SYS_TERM_BODY();
162 #ifdef PERL_IMPLICIT_SYS
164 perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
165 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
166 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
167 struct IPerlDir* ipD, struct IPerlSock* ipS,
168 struct IPerlProc* ipP)
170 PerlInterpreter *my_perl;
172 PERL_ARGS_ASSERT_PERL_ALLOC_USING;
174 /* Newx() needs interpreter, so call malloc() instead */
175 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
176 S_init_tls_and_interp(my_perl);
177 Zero(my_perl, 1, PerlInterpreter);
187 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
194 =head1 Embedding Functions
196 =for apidoc perl_alloc
198 Allocates a new Perl interpreter. See L<perlembed>.
206 PerlInterpreter *my_perl;
208 /* Newx() needs interpreter, so call malloc() instead */
209 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
211 S_init_tls_and_interp(my_perl);
212 #ifndef PERL_TRACK_MEMPOOL
213 return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter);
215 Zero(my_perl, 1, PerlInterpreter);
216 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
220 #endif /* PERL_IMPLICIT_SYS */
223 =for apidoc perl_construct
225 Initializes a new Perl interpreter. See L<perlembed>.
231 perl_construct(pTHXx)
235 PERL_ARGS_ASSERT_PERL_CONSTRUCT;
239 PL_perl_destruct_level = 1;
241 PERL_UNUSED_ARG(my_perl);
242 if (PL_perl_destruct_level > 0)
245 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
247 /* set read-only and try to insure than we wont see REFCNT==0
250 SvREADONLY_on(&PL_sv_undef);
251 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
253 sv_setpv(&PL_sv_no,PL_No);
254 /* value lookup in void context - happens to have the side effect
255 of caching the numeric forms. However, as &PL_sv_no doesn't contain
256 a string that is a valid numer, we have to turn the public flags by
262 SvREADONLY_on(&PL_sv_no);
263 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
265 sv_setpv(&PL_sv_yes,PL_Yes);
268 SvREADONLY_on(&PL_sv_yes);
269 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
271 SvREADONLY_on(&PL_sv_placeholder);
272 SvREFCNT(&PL_sv_placeholder) = (~(U32)0)/2;
274 PL_sighandlerp = (Sighandler_t) Perl_sighandler;
275 #ifdef PERL_USES_PL_PIDSTATUS
276 PL_pidstatus = newHV();
279 PL_rs = newSVpvs("\n");
289 SET_NUMERIC_STANDARD();
291 #if defined(LOCAL_PATCH_COUNT)
292 PL_localpatches = local_patches; /* For possible -v */
295 #ifdef HAVE_INTERP_INTERN
299 PerlIO_init(aTHX); /* Hook to IO system */
301 PL_fdpid = newAV(); /* for remembering popen pids by fd */
302 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
303 PL_errors = newSVpvs("");
304 sv_setpvs(PERL_DEBUG_PAD(0), ""); /* For regex debugging. */
305 sv_setpvs(PERL_DEBUG_PAD(1), ""); /* ext/re needs these */
306 sv_setpvs(PERL_DEBUG_PAD(2), ""); /* even without DEBUGGING. */
308 /* First entry is a list of empty elements. It needs to be initialised
309 else all hell breaks loose in S_find_uninit_var(). */
310 Perl_av_create_and_push(aTHX_ &PL_regex_padav, newSVpvs(""));
311 PL_regex_pad = AvARRAY(PL_regex_padav);
313 #ifdef USE_REENTRANT_API
314 Perl_reentrant_init(aTHX);
317 /* Note that strtab is a rather special HV. Assumptions are made
318 about not iterating on it, and not adding tie magic to it.
319 It is properly deallocated in perl_destruct() */
322 HvSHAREKEYS_off(PL_strtab); /* mandatory */
323 hv_ksplit(PL_strtab, 512);
325 #if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
326 _dyld_lookup_and_bind
327 ("__environ", (unsigned long *) &environ_pointer, NULL);
331 # ifdef USE_ENVIRON_ARRAY
332 PL_origenviron = environ;
336 /* Use sysconf(_SC_CLK_TCK) if available, if not
337 * available or if the sysconf() fails, use the HZ.
338 * BeOS has those, but returns the wrong value.
339 * The HZ if not originally defined has been by now
340 * been defined as CLK_TCK, if available. */
341 #if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK) && !defined(__BEOS__)
342 PL_clocktick = sysconf(_SC_CLK_TCK);
343 if (PL_clocktick <= 0)
347 PL_stashcache = newHV();
349 PL_patchlevel = newSVpvs("v" PERL_VERSION_STRING);
352 if (!PL_mmap_page_size) {
353 #if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
355 SETERRNO(0, SS_NORMAL);
357 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
359 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
361 if ((long) PL_mmap_page_size < 0) {
363 SV * const error = ERRSV;
364 SvUPGRADE(error, SVt_PV);
365 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
368 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
372 # ifdef HAS_GETPAGESIZE
373 PL_mmap_page_size = getpagesize();
375 # if defined(I_SYS_PARAM) && defined(PAGESIZE)
376 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
380 if (PL_mmap_page_size <= 0)
381 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
382 (IV) PL_mmap_page_size);
384 #endif /* HAS_MMAP */
386 #if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
387 PL_timesbase.tms_utime = 0;
388 PL_timesbase.tms_stime = 0;
389 PL_timesbase.tms_cutime = 0;
390 PL_timesbase.tms_cstime = 0;
393 PL_registered_mros = newHV();
394 /* Start with 1 bucket, for DFS. It's unlikely we'll need more. */
395 HvMAX(PL_registered_mros) = 0;
401 =for apidoc nothreadhook
403 Stub that provides thread hook for perl_destruct when there are
410 Perl_nothreadhook(pTHX)
416 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
418 Perl_dump_sv_child(pTHX_ SV *sv)
421 const int sock = PL_dumper_fd;
422 const int debug_fd = PerlIO_fileno(Perl_debug_log);
423 union control_un control;
426 struct cmsghdr *cmptr;
428 unsigned char buffer[256];
430 PERL_ARGS_ASSERT_DUMP_SV_CHILD;
432 if(sock == -1 || debug_fd == -1)
435 PerlIO_flush(Perl_debug_log);
437 /* All these shenanigans are to pass a file descriptor over to our child for
438 it to dump out to. We can't let it hold open the file descriptor when it
439 forks, as the file descriptor it will dump to can turn out to be one end
440 of pipe that some other process will wait on for EOF. (So as it would
441 be open, the wait would be forever.) */
443 msg.msg_control = control.control;
444 msg.msg_controllen = sizeof(control.control);
445 /* We're a connected socket so we don't need a destination */
451 cmptr = CMSG_FIRSTHDR(&msg);
452 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
453 cmptr->cmsg_level = SOL_SOCKET;
454 cmptr->cmsg_type = SCM_RIGHTS;
455 *((int *)CMSG_DATA(cmptr)) = 1;
457 vec[0].iov_base = (void*)&sv;
458 vec[0].iov_len = sizeof(sv);
459 got = sendmsg(sock, &msg, 0);
462 perror("Debug leaking scalars parent sendmsg failed");
465 if(got < sizeof(sv)) {
466 perror("Debug leaking scalars parent short sendmsg");
470 /* Return protocol is
472 unsigned char: length of location string (0 for empty)
473 unsigned char*: string (not terminated)
475 vec[0].iov_base = (void*)&returned_errno;
476 vec[0].iov_len = sizeof(returned_errno);
477 vec[1].iov_base = buffer;
480 got = readv(sock, vec, 2);
483 perror("Debug leaking scalars parent read failed");
484 PerlIO_flush(PerlIO_stderr());
487 if(got < sizeof(returned_errno) + 1) {
488 perror("Debug leaking scalars parent short read");
489 PerlIO_flush(PerlIO_stderr());
494 got = read(sock, buffer + 1, *buffer);
496 perror("Debug leaking scalars parent read 2 failed");
497 PerlIO_flush(PerlIO_stderr());
502 perror("Debug leaking scalars parent short read 2");
503 PerlIO_flush(PerlIO_stderr());
508 if (returned_errno || *buffer) {
509 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
510 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
511 returned_errno, strerror(returned_errno));
517 =for apidoc perl_destruct
519 Shuts down a Perl interpreter. See L<perlembed>.
528 VOL signed char destruct_level; /* see possible values in intrpvar.h */
530 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
534 PERL_ARGS_ASSERT_PERL_DESTRUCT;
536 PERL_UNUSED_ARG(my_perl);
539 /* wait for all pseudo-forked children to finish */
540 PERL_WAIT_FOR_CHILDREN;
542 destruct_level = PL_perl_destruct_level;
545 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
547 const int i = atoi(s);
548 if (destruct_level < i)
554 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
560 if (PL_endav && !PL_minus_c)
561 call_list(PL_scopestack_ix, PL_endav);
567 /* Need to flush since END blocks can produce output */
570 if (CALL_FPTR(PL_threadhook)(aTHX)) {
571 /* Threads hook has vetoed further cleanup */
572 PL_veto_cleanup = TRUE;
576 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
577 if (destruct_level != 0) {
578 /* Fork here to create a child. Our child's job is to preserve the
579 state of scalars prior to destruction, so that we can instruct it
580 to dump any scalars that we later find have leaked.
581 There's no subtlety in this code - it assumes POSIX, and it doesn't
585 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
586 perror("Debug leaking scalars socketpair failed");
592 perror("Debug leaking scalars fork failed");
596 /* We are the child */
597 const int sock = fd[1];
598 const int debug_fd = PerlIO_fileno(Perl_debug_log);
601 /* Our success message is an integer 0, and a char 0 */
602 static const char success[sizeof(int) + 1] = {0};
606 /* We need to close all other file descriptors otherwise we end up
607 with interesting hangs, where the parent closes its end of a
608 pipe, and sits waiting for (another) child to terminate. Only
609 that child never terminates, because it never gets EOF, because
610 we also have the far end of the pipe open. We even need to
611 close the debugging fd, because sometimes it happens to be one
612 end of a pipe, and a process is waiting on the other end for
613 EOF. Normally it would be closed at some point earlier in
614 destruction, but if we happen to cause the pipe to remain open,
615 EOF never occurs, and we get an infinite hang. Hence all the
616 games to pass in a file descriptor if it's actually needed. */
618 f = sysconf(_SC_OPEN_MAX);
620 where = "sysconf failed";
631 union control_un control;
634 struct cmsghdr *cmptr;
638 msg.msg_control = control.control;
639 msg.msg_controllen = sizeof(control.control);
640 /* We're a connected socket so we don't need a source */
644 msg.msg_iovlen = sizeof(vec)/sizeof(vec[0]);
646 vec[0].iov_base = (void*)⌖
647 vec[0].iov_len = sizeof(target);
649 got = recvmsg(sock, &msg, 0);
654 where = "recv failed";
657 if(got < sizeof(target)) {
658 where = "short recv";
662 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
666 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
667 where = "wrong cmsg_len";
670 if(cmptr->cmsg_level != SOL_SOCKET) {
671 where = "wrong cmsg_level";
674 if(cmptr->cmsg_type != SCM_RIGHTS) {
675 where = "wrong cmsg_type";
679 got_fd = *(int*)CMSG_DATA(cmptr);
680 /* For our last little bit of trickery, put the file descriptor
681 back into Perl_debug_log, as if we never actually closed it
683 if(got_fd != debug_fd) {
684 if (dup2(got_fd, debug_fd) == -1) {
691 PerlIO_flush(Perl_debug_log);
693 got = write(sock, &success, sizeof(success));
696 where = "write failed";
699 if(got < sizeof(success)) {
700 where = "short write";
707 int send_errno = errno;
708 unsigned char length = (unsigned char) strlen(where);
709 struct iovec failure[3] = {
710 {(void*)&send_errno, sizeof(send_errno)},
712 {(void*)where, length}
714 int got = writev(sock, failure, 3);
715 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
716 in the parent if we try to read from the socketpair after the
717 child has exited, even if there was data to read.
718 So sleep a bit to give the parent a fighting chance of
721 _exit((got == -1) ? errno : 0);
725 PL_dumper_fd = fd[0];
730 /* We must account for everything. */
732 /* Destroy the main CV and syntax tree */
733 /* Do this now, because destroying ops can cause new SVs to be generated
734 in Perl_pad_swipe, and when running with -DDEBUG_LEAKING_SCALARS they
735 PL_curcop to point to a valid op from which the filename structure
737 PL_curcop = &PL_compiling;
739 /* ensure comppad/curpad to refer to main's pad */
740 if (CvPADLIST(PL_main_cv)) {
741 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
743 op_free(PL_main_root);
746 PL_main_start = NULL;
747 SvREFCNT_dec(PL_main_cv);
751 /* Tell PerlIO we are about to tear things apart in case
752 we have layers which are using resources that should
756 PerlIO_destruct(aTHX);
758 if (PL_sv_objcount) {
760 * Try to destruct global references. We do this first so that the
761 * destructors and destructees still exist. Some sv's might remain.
762 * Non-referenced objects are on their own.
766 if (PL_defoutgv && !SvREFCNT(PL_defoutgv))
767 PL_defoutgv = NULL; /* may have been freed */
770 /* unhook hooks which will soon be, or use, destroyed data */
771 SvREFCNT_dec(PL_warnhook);
773 SvREFCNT_dec(PL_diehook);
776 /* call exit list functions */
777 while (PL_exitlistlen-- > 0)
778 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
780 Safefree(PL_exitlist);
785 SvREFCNT_dec(PL_registered_mros);
787 /* jettison our possibly duplicated environment */
788 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
789 * so we certainly shouldn't free it here
792 #if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
793 if (environ != PL_origenviron && !PL_use_safe_putenv
795 /* only main thread can free environ[0] contents */
796 && PL_curinterp == aTHX
802 for (i = 0; environ[i]; i++)
803 safesysfree(environ[i]);
805 /* Must use safesysfree() when working with environ. */
806 safesysfree(environ);
808 environ = PL_origenviron;
811 #endif /* !PERL_MICRO */
813 if (destruct_level == 0) {
815 DEBUG_P(debprofdump());
817 #if defined(PERLIO_LAYERS)
818 /* No more IO - including error messages ! */
819 PerlIO_cleanup(aTHX);
822 CopFILE_free(&PL_compiling);
823 CopSTASH_free(&PL_compiling);
825 /* The exit() function will do everything that needs doing. */
829 /* reset so print() ends up where we expect */
833 /* the syntax tree is shared between clones
834 * so op_free(PL_main_root) only ReREFCNT_dec's
835 * REGEXPs in the parent interpreter
836 * we need to manually ReREFCNT_dec for the clones
838 SvREFCNT_dec(PL_regex_padav);
839 PL_regex_padav = NULL;
843 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
844 PL_stashcache = NULL;
846 /* loosen bonds of global variables */
848 /* XXX can PL_parser still be non-null here? */
849 if(PL_parser && PL_parser->rsfp) {
850 (void)PerlIO_close(PL_parser->rsfp);
851 PL_parser->rsfp = NULL;
855 Safefree(PL_splitstr);
865 PL_doswitches = FALSE;
866 PL_dowarn = G_WARN_OFF;
867 PL_doextract = FALSE;
868 PL_sawampersand = FALSE; /* must save all match strings */
871 Safefree(PL_inplace);
873 SvREFCNT_dec(PL_patchlevel);
876 SvREFCNT_dec(PL_e_script);
882 /* magical thingies */
884 SvREFCNT_dec(PL_ofsgv); /* *, */
887 SvREFCNT_dec(PL_ors_sv); /* $\ */
890 SvREFCNT_dec(PL_rs); /* $/ */
893 Safefree(PL_osname); /* $^O */
896 SvREFCNT_dec(PL_statname);
900 /* defgv, aka *_ should be taken care of elsewhere */
902 /* clean up after study() */
903 SvREFCNT_dec(PL_lastscream);
904 PL_lastscream = NULL;
905 Safefree(PL_screamfirst);
907 Safefree(PL_screamnext);
911 Safefree(PL_efloatbuf);
915 /* startup and shutdown function lists */
916 SvREFCNT_dec(PL_beginav);
917 SvREFCNT_dec(PL_beginav_save);
918 SvREFCNT_dec(PL_endav);
919 SvREFCNT_dec(PL_checkav);
920 SvREFCNT_dec(PL_checkav_save);
921 SvREFCNT_dec(PL_unitcheckav);
922 SvREFCNT_dec(PL_unitcheckav_save);
923 SvREFCNT_dec(PL_initav);
925 PL_beginav_save = NULL;
928 PL_checkav_save = NULL;
929 PL_unitcheckav = NULL;
930 PL_unitcheckav_save = NULL;
933 /* shortcuts just get cleared */
942 PL_last_in_gv = NULL;
954 SvREFCNT_dec(PL_argvout_stack);
955 PL_argvout_stack = NULL;
957 SvREFCNT_dec(PL_modglobal);
959 SvREFCNT_dec(PL_preambleav);
960 PL_preambleav = NULL;
961 SvREFCNT_dec(PL_subname);
963 #ifdef PERL_USES_PL_PIDSTATUS
964 SvREFCNT_dec(PL_pidstatus);
967 SvREFCNT_dec(PL_toptarget);
969 SvREFCNT_dec(PL_bodytarget);
970 PL_bodytarget = NULL;
971 PL_formtarget = NULL;
973 /* free locale stuff */
974 #ifdef USE_LOCALE_COLLATE
975 Safefree(PL_collation_name);
976 PL_collation_name = NULL;
979 #ifdef USE_LOCALE_NUMERIC
980 Safefree(PL_numeric_name);
981 PL_numeric_name = NULL;
982 SvREFCNT_dec(PL_numeric_radix_sv);
983 PL_numeric_radix_sv = NULL;
986 /* clear utf8 character classes */
987 SvREFCNT_dec(PL_utf8_alnum);
988 SvREFCNT_dec(PL_utf8_alnumc);
989 SvREFCNT_dec(PL_utf8_ascii);
990 SvREFCNT_dec(PL_utf8_alpha);
991 SvREFCNT_dec(PL_utf8_space);
992 SvREFCNT_dec(PL_utf8_cntrl);
993 SvREFCNT_dec(PL_utf8_graph);
994 SvREFCNT_dec(PL_utf8_digit);
995 SvREFCNT_dec(PL_utf8_upper);
996 SvREFCNT_dec(PL_utf8_lower);
997 SvREFCNT_dec(PL_utf8_print);
998 SvREFCNT_dec(PL_utf8_punct);
999 SvREFCNT_dec(PL_utf8_xdigit);
1000 SvREFCNT_dec(PL_utf8_mark);
1001 SvREFCNT_dec(PL_utf8_toupper);
1002 SvREFCNT_dec(PL_utf8_totitle);
1003 SvREFCNT_dec(PL_utf8_tolower);
1004 SvREFCNT_dec(PL_utf8_tofold);
1005 SvREFCNT_dec(PL_utf8_idstart);
1006 SvREFCNT_dec(PL_utf8_idcont);
1007 PL_utf8_alnum = NULL;
1008 PL_utf8_alnumc = NULL;
1009 PL_utf8_ascii = NULL;
1010 PL_utf8_alpha = NULL;
1011 PL_utf8_space = NULL;
1012 PL_utf8_cntrl = NULL;
1013 PL_utf8_graph = NULL;
1014 PL_utf8_digit = NULL;
1015 PL_utf8_upper = NULL;
1016 PL_utf8_lower = NULL;
1017 PL_utf8_print = NULL;
1018 PL_utf8_punct = NULL;
1019 PL_utf8_xdigit = NULL;
1020 PL_utf8_mark = NULL;
1021 PL_utf8_toupper = NULL;
1022 PL_utf8_totitle = NULL;
1023 PL_utf8_tolower = NULL;
1024 PL_utf8_tofold = NULL;
1025 PL_utf8_idstart = NULL;
1026 PL_utf8_idcont = NULL;
1028 if (!specialWARN(PL_compiling.cop_warnings))
1029 PerlMemShared_free(PL_compiling.cop_warnings);
1030 PL_compiling.cop_warnings = NULL;
1031 Perl_refcounted_he_free(aTHX_ PL_compiling.cop_hints_hash);
1032 PL_compiling.cop_hints_hash = NULL;
1033 CopFILE_free(&PL_compiling);
1034 CopSTASH_free(&PL_compiling);
1036 /* Prepare to destruct main symbol table. */
1041 SvREFCNT_dec(PL_curstname);
1042 PL_curstname = NULL;
1044 /* clear queued errors */
1045 SvREFCNT_dec(PL_errors);
1048 SvREFCNT_dec(PL_isarev);
1051 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
1052 if (PL_scopestack_ix != 0)
1053 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
1054 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1055 (long)PL_scopestack_ix);
1056 if (PL_savestack_ix != 0)
1057 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
1058 "Unbalanced saves: %ld more saves than restores\n",
1059 (long)PL_savestack_ix);
1060 if (PL_tmps_floor != -1)
1061 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1062 (long)PL_tmps_floor + 1);
1063 if (cxstack_ix != -1)
1064 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1065 (long)cxstack_ix + 1);
1068 /* Now absolutely destruct everything, somehow or other, loops or no. */
1070 /* the 2 is for PL_fdpid and PL_strtab */
1071 while (sv_clean_all() > 2)
1074 AvREAL_off(PL_fdpid); /* no surviving entries */
1075 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
1078 #ifdef HAVE_INTERP_INTERN
1082 /* Destruct the global string table. */
1084 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1085 * so that sv_free() won't fail on them.
1086 * Now that the global string table is using a single hunk of memory
1087 * for both HE and HEK, we either need to explicitly unshare it the
1088 * correct way, or actually free things here.
1091 const I32 max = HvMAX(PL_strtab);
1092 HE * const * const array = HvARRAY(PL_strtab);
1093 HE *hent = array[0];
1096 if (hent && ckWARN_d(WARN_INTERNAL)) {
1097 HE * const next = HeNEXT(hent);
1098 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
1099 "Unbalanced string table refcount: (%ld) for \"%s\"",
1100 (long)hent->he_valu.hent_refcount, HeKEY(hent));
1107 hent = array[riter];
1112 HvARRAY(PL_strtab) = 0;
1113 HvTOTALKEYS(PL_strtab) = 0;
1114 HvFILL(PL_strtab) = 0;
1116 SvREFCNT_dec(PL_strtab);
1119 /* free the pointer tables used for cloning */
1120 ptr_table_free(PL_ptr_table);
1121 PL_ptr_table = (PTR_TBL_t*)NULL;
1124 /* free special SVs */
1126 SvREFCNT(&PL_sv_yes) = 0;
1127 sv_clear(&PL_sv_yes);
1128 SvANY(&PL_sv_yes) = NULL;
1129 SvFLAGS(&PL_sv_yes) = 0;
1131 SvREFCNT(&PL_sv_no) = 0;
1132 sv_clear(&PL_sv_no);
1133 SvANY(&PL_sv_no) = NULL;
1134 SvFLAGS(&PL_sv_no) = 0;
1138 for (i=0; i<=2; i++) {
1139 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1140 sv_clear(PERL_DEBUG_PAD(i));
1141 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1142 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1146 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
1147 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
1149 #ifdef DEBUG_LEAKING_SCALARS
1150 if (PL_sv_count != 0) {
1155 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
1156 svend = &sva[SvREFCNT(sva)];
1157 for (sv = sva + 1; sv < svend; ++sv) {
1158 if (SvTYPE(sv) != SVTYPEMASK) {
1159 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
1161 " refcnt=%"UVuf pTHX__FORMAT "\n"
1162 "\tallocated at %s:%d %s %s%s\n",
1163 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1165 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1167 sv->sv_debug_inpad ? "for" : "by",
1168 sv->sv_debug_optype ?
1169 PL_op_name[sv->sv_debug_optype]: "(none)",
1170 sv->sv_debug_cloned ? " (cloned)" : ""
1172 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1173 Perl_dump_sv_child(aTHX_ sv);
1179 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1183 /* Wait for up to 4 seconds for child to terminate.
1184 This seems to be the least effort way of timing out on reaping
1186 struct timeval waitfor = {4, 0};
1187 int sock = PL_dumper_fd;
1191 FD_SET(sock, &rset);
1192 select(sock + 1, &rset, NULL, NULL, &waitfor);
1193 waitpid(child, &status, WNOHANG);
1198 #ifdef DEBUG_LEAKING_SCALARS_ABORT
1204 #ifdef PERL_DEBUG_READONLY_OPS
1210 #if defined(PERLIO_LAYERS)
1211 /* No more IO - including error messages ! */
1212 PerlIO_cleanup(aTHX);
1215 /* sv_undef needs to stay immortal until after PerlIO_cleanup
1216 as currently layers use it rather than NULL as a marker
1217 for no arg - and will try and SvREFCNT_dec it.
1219 SvREFCNT(&PL_sv_undef) = 0;
1220 SvREADONLY_off(&PL_sv_undef);
1222 Safefree(PL_origfilename);
1223 PL_origfilename = NULL;
1224 Safefree(PL_reg_start_tmp);
1225 PL_reg_start_tmp = (char**)NULL;
1226 PL_reg_start_tmpl = 0;
1227 Safefree(PL_reg_curpm);
1228 Safefree(PL_reg_poscache);
1229 free_tied_hv_pool();
1230 Safefree(PL_op_mask);
1231 Safefree(PL_psig_ptr);
1232 PL_psig_ptr = (SV**)NULL;
1233 Safefree(PL_psig_name);
1234 PL_psig_name = (SV**)NULL;
1235 Safefree(PL_bitcount);
1237 Safefree(PL_psig_pend);
1238 PL_psig_pend = (int*)NULL;
1241 PL_tainting = FALSE;
1242 PL_taint_warn = FALSE;
1243 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
1246 DEBUG_P(debprofdump());
1248 #ifdef USE_REENTRANT_API
1249 Perl_reentrant_free(aTHX);
1254 while (PL_regmatch_slab) {
1255 regmatch_slab *s = PL_regmatch_slab;
1256 PL_regmatch_slab = PL_regmatch_slab->next;
1260 /* As the absolutely last thing, free the non-arena SV for mess() */
1263 /* we know that type == SVt_PVMG */
1265 /* it could have accumulated taint magic */
1268 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1269 moremagic = mg->mg_moremagic;
1270 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1272 Safefree(mg->mg_ptr);
1276 /* we know that type >= SVt_PV */
1277 SvPV_free(PL_mess_sv);
1278 Safefree(SvANY(PL_mess_sv));
1279 Safefree(PL_mess_sv);
1286 =for apidoc perl_free
1288 Releases a Perl interpreter. See L<perlembed>.
1298 PERL_ARGS_ASSERT_PERL_FREE;
1300 if (PL_veto_cleanup)
1303 #ifdef PERL_TRACK_MEMPOOL
1306 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1307 * value as we're probably hunting memory leaks then
1309 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
1310 if (!s || atoi(s) == 0) {
1311 const U32 old_debug = PL_debug;
1312 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1313 thread at thread exit. */
1315 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1316 "free this thread's memory\n");
1317 PL_debug &= ~ DEBUG_m_FLAG;
1319 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
1320 safesysfree(sTHX + (char *)(aTHXx->Imemory_debug_header.next));
1321 PL_debug = old_debug;
1326 #if defined(WIN32) || defined(NETWARE)
1327 # if defined(PERL_IMPLICIT_SYS)
1330 void *host = nw_internal_host;
1332 void *host = w32_internal_host;
1334 PerlMem_free(aTHXx);
1336 nw_delete_internal_host(host);
1338 win32_delete_internal_host(host);
1342 PerlMem_free(aTHXx);
1345 PerlMem_free(aTHXx);
1349 #if defined(USE_ITHREADS)
1350 /* provide destructors to clean up the thread key when libperl is unloaded */
1351 #ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1353 #if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
1354 #pragma fini "perl_fini"
1355 #elif defined(__sun) && !defined(__GNUC__)
1356 #pragma fini (perl_fini)
1360 #if defined(__GNUC__)
1361 __attribute__((destructor))
1366 if (PL_curinterp && !PL_veto_cleanup)
1371 #endif /* THREADS */
1374 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
1377 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1378 PL_exitlist[PL_exitlistlen].fn = fn;
1379 PL_exitlist[PL_exitlistlen].ptr = ptr;
1383 #ifdef HAS_PROCSELFEXE
1384 /* This is a function so that we don't hold on to MAXPATHLEN
1385 bytes of stack longer than necessary
1388 S_procself_val(pTHX_ SV *sv, const char *arg0)
1390 char buf[MAXPATHLEN];
1391 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1393 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1394 includes a spurious NUL which will cause $^X to fail in system
1395 or backticks (this will prevent extensions from being built and
1396 many tests from working). readlink is not meant to add a NUL.
1397 Normal readlink works fine.
1399 if (len > 0 && buf[len-1] == '\0') {
1403 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1404 returning the text "unknown" from the readlink rather than the path
1405 to the executable (or returning an error from the readlink). Any valid
1406 path has a '/' in it somewhere, so use that to validate the result.
1407 See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1409 if (len > 0 && memchr(buf, '/', len)) {
1410 sv_setpvn(sv,buf,len);
1416 #endif /* HAS_PROCSELFEXE */
1419 S_set_caret_X(pTHX) {
1421 GV* tmpgv = gv_fetchpvs("\030", GV_ADD|GV_NOTQUAL, SVt_PV); /* $^X */
1423 #ifdef HAS_PROCSELFEXE
1424 S_procself_val(aTHX_ GvSV(tmpgv), PL_origargv[0]);
1427 sv_setpv(GvSVn(tmpgv), os2_execname(aTHX));
1429 sv_setpv(GvSVn(tmpgv),PL_origargv[0]);
1436 =for apidoc perl_parse
1438 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1444 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
1451 PERL_ARGS_ASSERT_PERL_PARSE;
1452 #ifndef MULTIPLICITY
1453 PERL_UNUSED_ARG(my_perl);
1456 #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
1457 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
1458 * This MUST be done before any hash stores or fetches take place.
1459 * If you set PL_rehash_seed (and assumedly also PL_rehash_seed_set)
1460 * yourself, it is your responsibility to provide a good random seed!
1461 * You can also define PERL_HASH_SEED in compile time, see hv.h. */
1462 if (!PL_rehash_seed_set)
1463 PL_rehash_seed = get_hash_seed();
1465 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
1467 if (s && (atoi(s) == 1))
1468 PerlIO_printf(Perl_debug_log, "HASH_SEED = %"UVuf"\n", PL_rehash_seed);
1470 #endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1475 if (PL_origalen != 0) {
1476 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1479 /* Set PL_origalen be the sum of the contiguous argv[]
1480 * elements plus the size of the env in case that it is
1481 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
1482 * as the maximum modifiable length of $0. In the worst case
1483 * the area we are able to modify is limited to the size of
1484 * the original argv[0]. (See below for 'contiguous', though.)
1486 const char *s = NULL;
1489 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
1490 /* Do the mask check only if the args seem like aligned. */
1492 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1494 /* See if all the arguments are contiguous in memory. Note
1495 * that 'contiguous' is a loose term because some platforms
1496 * align the argv[] and the envp[]. If the arguments look
1497 * like non-aligned, assume that they are 'strictly' or
1498 * 'traditionally' contiguous. If the arguments look like
1499 * aligned, we just check that they are within aligned
1500 * PTRSIZE bytes. As long as no system has something bizarre
1501 * like the argv[] interleaved with some other data, we are
1502 * fine. (Did I just evoke Murphy's Law?) --jhi */
1503 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1505 for (i = 1; i < PL_origargc; i++) {
1506 if ((PL_origargv[i] == s + 1
1508 || PL_origargv[i] == s + 2
1513 (PL_origargv[i] > s &&
1515 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1526 #ifndef PERL_USE_SAFE_PUTENV
1527 /* Can we grab env area too to be used as the area for $0? */
1528 if (s && PL_origenviron && !PL_use_safe_putenv) {
1529 if ((PL_origenviron[0] == s + 1)
1532 (PL_origenviron[0] > s &&
1533 PL_origenviron[0] <=
1534 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1537 #ifndef OS2 /* ENVIRON is read by the kernel too. */
1538 s = PL_origenviron[0];
1541 my_setenv("NoNe SuCh", NULL);
1542 /* Force copy of environment. */
1543 for (i = 1; PL_origenviron[i]; i++) {
1544 if (PL_origenviron[i] == s + 1
1547 (PL_origenviron[i] > s &&
1548 PL_origenviron[i] <=
1549 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1552 s = PL_origenviron[i];
1560 #endif /* !defined(PERL_USE_SAFE_PUTENV) */
1562 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
1567 /* Come here if running an undumped a.out. */
1569 PL_origfilename = savepv(argv[0]);
1570 PL_do_undump = FALSE;
1571 cxstack_ix = -1; /* start label stack again */
1573 assert (!PL_tainted);
1575 S_set_caret_X(aTHX);
1577 init_postdump_symbols(argc,argv,env);
1582 op_free(PL_main_root);
1583 PL_main_root = NULL;
1585 PL_main_start = NULL;
1586 SvREFCNT_dec(PL_main_cv);
1590 oldscope = PL_scopestack_ix;
1591 PL_dowarn = G_WARN_OFF;
1596 parse_body(env,xsinit);
1598 call_list(oldscope, PL_unitcheckav);
1600 call_list(oldscope, PL_checkav);
1607 /* my_exit() was called */
1608 while (PL_scopestack_ix > oldscope)
1611 PL_curstash = PL_defstash;
1613 call_list(oldscope, PL_unitcheckav);
1615 call_list(oldscope, PL_checkav);
1619 PerlIO_printf(Perl_error_log, "panic: top_env\n");
1627 #define INCPUSH_ADD_SUB_DIRS 0x01
1628 #define INCPUSH_ADD_OLD_VERS 0x02
1629 #define INCPUSH_NOT_BASEDIR 0x04
1630 #define INCPUSH_CAN_RELOCATE 0x08
1631 #define INCPUSH_UNSHIFT 0x10
1634 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
1638 int argc = PL_origargc;
1639 char **argv = PL_origargv;
1640 const char *scriptname = NULL;
1641 VOL bool dosearch = FALSE;
1644 const char *cddir = NULL;
1645 #ifdef USE_SITECUSTOMIZE
1646 bool minus_f = FALSE;
1648 SV *linestr_sv = newSV_type(SVt_PVIV);
1649 bool add_read_e_script = FALSE;
1651 SvGROW(linestr_sv, 80);
1652 sv_setpvs(linestr_sv,"");
1654 sv = newSVpvs(""); /* first used for -I flags */
1660 for (argc--,argv++; argc > 0; argc--,argv++) {
1661 if (argv[0][0] != '-' || !argv[0][1])
1667 #ifndef PERL_STRICT_CR
1691 if ((s = moreswitches(s)))
1696 CHECK_MALLOC_TOO_LATE_FOR('t');
1697 if( !PL_tainting ) {
1698 PL_taint_warn = TRUE;
1704 CHECK_MALLOC_TOO_LATE_FOR('T');
1706 PL_taint_warn = FALSE;
1714 #ifdef MACOS_TRADITIONAL
1715 /* ignore -e for Dev:Pseudo argument */
1716 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
1719 forbid_setid('e', FALSE);
1721 PL_e_script = newSVpvs("");
1722 add_read_e_script = TRUE;
1725 sv_catpv(PL_e_script, s);
1727 sv_catpv(PL_e_script, argv[1]);
1731 Perl_croak(aTHX_ "No code specified for -%c", c);
1732 sv_catpvs(PL_e_script, "\n");
1736 #ifdef USE_SITECUSTOMIZE
1742 case 'I': /* -I handled both here and in moreswitches() */
1743 forbid_setid('I', FALSE);
1744 if (!*++s && (s=argv[1]) != NULL) {
1748 STRLEN len = strlen(s);
1749 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
1750 sv_catpvs(sv, "-I");
1751 sv_catpvn(sv, s, len);
1755 Perl_croak(aTHX_ "No directory specified for -I");
1758 forbid_setid('S', FALSE);
1766 Perl_av_create_and_push(aTHX_ &PL_preambleav, newSVpvs("use Config;"));
1768 /* Can't do newSVpvs() as that would involve pre-processor
1769 condititionals inside a macro expansion. */
1770 opts_prog = Perl_newSVpv(aTHX_ "$_ = join ' ', sort qw("
1777 # ifdef PERL_DONT_CREATE_GVSV
1778 " PERL_DONT_CREATE_GVSV"
1780 # ifdef PERL_MALLOC_WRAP
1783 # ifdef PERL_MEM_LOG
1786 # ifdef PERL_MEM_LOG_ENV
1789 # ifdef PERL_MEM_LOG_ENV_FD
1790 " PERL_MEM_LOG_ENV_FD"
1792 # ifdef PERL_MEM_LOG_STDERR
1793 " PERL_MEM_LOG_STDERR"
1795 # ifdef PERL_MEM_LOG_TIMESTAMP
1796 " PERL_MEM_LOG_TIMESTAMP"
1798 # ifdef PERL_USE_DEVEL
1801 # ifdef PERL_USE_SAFE_PUTENV
1802 " PERL_USE_SAFE_PUTENV"
1804 # ifdef USE_SITECUSTOMIZE
1805 " USE_SITECUSTOMIZE"
1807 # ifdef USE_FAST_STDIO
1812 sv_catpv(opts_prog, PL_bincompat_options);
1813 /* Terminate the qw(, and then wrap at 76 columns. */
1814 sv_catpvs(opts_prog, "); s/(?=.{53})(.{1,53}) /$1\\n /mg;print Config::myconfig(),");
1816 sv_catpvs(opts_prog,"\"\\nCharacteristics of this PERLSHR image: \\n");
1818 sv_catpvs(opts_prog,"\"\\nCharacteristics of this binary (from libperl): \\n");
1820 sv_catpvs(opts_prog," Compile-time options: $_\\n\",");
1822 #if defined(LOCAL_PATCH_COUNT)
1823 if (LOCAL_PATCH_COUNT > 0) {
1825 sv_catpvs(opts_prog,
1826 "\" Locally applied patches:\\n\",");
1827 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1828 if (PL_localpatches[i])
1829 Perl_sv_catpvf(aTHX_ opts_prog,"q%c\t%s\n%c,",
1830 0, PL_localpatches[i], 0);
1834 Perl_sv_catpvf(aTHX_ opts_prog,
1835 "\" Built under %s\\n",OSNAME);
1838 sv_catpvs(opts_prog,
1839 " Compiled at " __DATE__ " " __TIME__ "\\n\"");
1841 sv_catpvs(opts_prog, " Compiled on " __DATE__ "\\n\"");
1844 sv_catpvs(opts_prog, "; $\"=\"\\n \"; "
1845 "@env = map { \"$_=\\\"$ENV{$_}\\\"\" } "
1846 "sort grep {/^PERL/} keys %ENV; ");
1848 sv_catpvs(opts_prog,
1849 "push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
1851 sv_catpvs(opts_prog,
1852 "print \" \\%ENV:\\n @env\\n\" if @env;"
1853 "print \" \\@INC:\\n @INC\\n\";");
1857 opts_prog = Perl_newSVpvf(aTHX_
1858 "Config::config_vars(qw%c%s%c)",
1862 av_push(PL_preambleav, opts_prog);
1863 /* don't look for script or read stdin */
1864 scriptname = BIT_BUCKET;
1868 PL_doextract = TRUE;
1876 if (!*++s || isSPACE(*s)) {
1880 /* catch use of gnu style long options */
1881 if (strEQ(s, "version")) {
1885 if (strEQ(s, "help")) {
1892 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1903 #ifndef SECURE_INTERNAL_GETENV
1906 (s = PerlEnv_getenv("PERL5OPT")))
1910 if (*s == '-' && *(s+1) == 'T') {
1911 CHECK_MALLOC_TOO_LATE_FOR('T');
1913 PL_taint_warn = FALSE;
1916 char *popt_copy = NULL;
1929 if (!strchr("CDIMUdmtw", *s))
1930 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
1934 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
1935 s = popt_copy + (s - d);
1943 if( !PL_tainting ) {
1944 PL_taint_warn = TRUE;
1955 #ifdef USE_SITECUSTOMIZE
1957 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
1958 Perl_newSVpvf(aTHX_ "BEGIN { do '%s/sitecustomize.pl' }", SITELIB_EXP));
1963 scriptname = argv[0];
1966 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1968 else if (scriptname == NULL) {
1970 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1976 /* Set $^X early so that it can be used for relocatable paths in @INC */
1977 assert (!PL_tainted);
1979 S_set_caret_X(aTHX);
1982 init_perllib(INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
1985 bool suidscript = FALSE;
1987 open_script(scriptname, dosearch, &suidscript, &rsfp);
1989 validate_suid(validarg, scriptname, fdscript, suidscript,
1993 # if defined(SIGCHLD) || defined(SIGCLD)
1996 # define SIGCHLD SIGCLD
1998 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1999 if (sigstate == (Sighandler_t) SIG_IGN) {
2000 if (ckWARN(WARN_SIGNAL))
2001 Perl_warner(aTHX_ packWARN(WARN_SIGNAL),
2002 "Can't ignore signal CHLD, forcing to default");
2003 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2010 #ifdef MACOS_TRADITIONAL
2011 || gMacPerl_AlwaysExtract
2015 /* This will croak if suidscript is true, as -x cannot be used with
2017 forbid_setid('x', suidscript);
2018 /* Hence you can't get here if suidscript is true */
2020 find_beginning(linestr_sv, rsfp);
2021 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2022 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2026 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
2027 CvUNIQUE_on(PL_compcv);
2029 CvPADLIST(PL_compcv) = pad_new(0);
2031 PL_isarev = newHV();
2034 boot_core_UNIVERSAL();
2035 boot_core_xsutils();
2039 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
2041 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC) || defined(SYMBIAN)
2047 # ifdef HAS_SOCKS5_INIT
2048 socks5_init(argv[0]);
2054 init_predump_symbols();
2055 /* init_postdump_symbols not currently designed to be called */
2056 /* more than once (ENV isn't cleared first, for example) */
2057 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
2059 init_postdump_symbols(argc,argv,env);
2061 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2062 * or explicitly in some platforms.
2063 * locale.c:Perl_init_i18nl10n() if the environment
2064 * look like the user wants to use UTF-8. */
2065 #if defined(__SYMBIAN32__)
2066 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2069 /* Requires init_predump_symbols(). */
2070 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
2075 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
2076 * and the default open disciplines. */
2077 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2078 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2080 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2081 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2082 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2084 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2085 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2086 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2088 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2089 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
2090 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2092 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2093 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2096 sv_setpvs(sv, ":utf8\0:utf8");
2098 sv_setpvs(sv, ":utf8\0");
2101 sv_setpvs(sv, "\0:utf8");
2109 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2110 if (strEQ(s, "unsafe"))
2111 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2112 else if (strEQ(s, "safe"))
2113 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2115 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2122 if ((s = PerlEnv_getenv("PERL_XMLDUMP"))) {
2126 PL_xmlfp = PerlIO_stdout();
2128 PL_xmlfp = PerlIO_open(s, "w");
2130 Perl_croak(aTHX_ "Can't open %s", s);
2132 my_setenv("PERL_XMLDUMP", NULL); /* hide from subprocs */
2138 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2139 PL_madskills = atoi(s);
2140 my_setenv("PERL_MADSKILLS", NULL); /* hide from subprocs */
2145 lex_start(linestr_sv, rsfp, TRUE);
2146 PL_subname = newSVpvs("main");
2148 if (add_read_e_script)
2149 filter_add(read_e_script, NULL);
2151 /* now parse the script */
2153 SETERRNO(0,SS_NORMAL);
2154 #ifdef MACOS_TRADITIONAL
2155 if (gMacPerl_SyntaxError = (yyparse() || PL_parser->error_count)) {
2157 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
2159 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
2160 MacPerl_MPWFileName(PL_origfilename));
2164 if (yyparse() || PL_parser->error_count) {
2166 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
2168 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
2173 CopLINE_set(PL_curcop, 0);
2174 PL_curstash = PL_defstash;
2176 SvREFCNT_dec(PL_e_script);
2184 SAVECOPFILE(PL_curcop);
2185 SAVECOPLINE(PL_curcop);
2186 gv_check(PL_defstash);
2195 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2196 dump_mstats("after compilation:");
2206 =for apidoc perl_run
2208 Tells a Perl interpreter to run. See L<perlembed>.
2221 PERL_ARGS_ASSERT_PERL_RUN;
2222 #ifndef MULTIPLICITY
2223 PERL_UNUSED_ARG(my_perl);
2226 oldscope = PL_scopestack_ix;
2234 cxstack_ix = -1; /* start context stack again */
2236 case 0: /* normal completion */
2240 case 2: /* my_exit() */
2241 while (PL_scopestack_ix > oldscope)
2244 PL_curstash = PL_defstash;
2245 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
2246 PL_endav && !PL_minus_c)
2247 call_list(oldscope, PL_endav);
2249 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2250 dump_mstats("after execution: ");
2256 POPSTACK_TO(PL_mainstack);
2259 PerlIO_printf(Perl_error_log, "panic: restartop\n");
2270 S_run_body(pTHX_ I32 oldscope)
2273 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
2274 PL_sawampersand ? "Enabling" : "Omitting"));
2276 if (!PL_restartop) {
2280 exit(0); /* less likely to core dump than my_exit(0) */
2283 DEBUG_x(dump_all());
2286 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
2290 #ifdef MACOS_TRADITIONAL
2291 PerlIO_printf(Perl_error_log, "%s%s syntax OK\n",
2292 (gMacPerl_ErrorFormat ? "# " : ""),
2293 MacPerl_MPWFileName(PL_origfilename));
2295 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
2299 if (PERLDB_SINGLE && PL_DBsingle)
2300 sv_setiv(PL_DBsingle, 1);
2302 call_list(oldscope, PL_initav);
2303 #ifdef PERL_DEBUG_READONLY_OPS
2304 Perl_pending_Slabs_to_ro(aTHX);
2311 PL_op = PL_restartop;
2315 else if (PL_main_start) {
2316 CvDEPTH(PL_main_cv) = 1;
2317 PL_op = PL_main_start;
2325 =head1 SV Manipulation Functions
2327 =for apidoc p||get_sv
2329 Returns the SV of the specified Perl scalar. C<flags> are passed to
2330 C<gv_fetchpv>. If C<GV_ADD> is set and the
2331 Perl variable does not exist then it will be created. If C<flags> is zero
2332 and the variable does not exist then NULL is returned.
2338 Perl_get_sv(pTHX_ const char *name, I32 flags)
2342 PERL_ARGS_ASSERT_GET_SV;
2344 gv = gv_fetchpv(name, flags, SVt_PV);
2351 =head1 Array Manipulation Functions
2353 =for apidoc p||get_av
2355 Returns the AV of the specified Perl array. C<flags> are passed to
2356 C<gv_fetchpv>. If C<GV_ADD> is set and the
2357 Perl variable does not exist then it will be created. If C<flags> is zero
2358 and the variable does not exist then NULL is returned.
2364 Perl_get_av(pTHX_ const char *name, I32 flags)
2366 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
2368 PERL_ARGS_ASSERT_GET_AV;
2378 =head1 Hash Manipulation Functions
2380 =for apidoc p||get_hv
2382 Returns the HV of the specified Perl hash. C<flags> are passed to
2383 C<gv_fetchpv>. If C<GV_ADD> is set and the
2384 Perl variable does not exist then it will be created. If C<flags> is zero
2385 and the variable does not exist then NULL is returned.
2391 Perl_get_hv(pTHX_ const char *name, I32 flags)
2393 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
2395 PERL_ARGS_ASSERT_GET_HV;
2405 =head1 CV Manipulation Functions
2407 =for apidoc p||get_cvn_flags
2409 Returns the CV of the specified Perl subroutine. C<flags> are passed to
2410 C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2411 exist then it will be declared (which has the same effect as saying
2412 C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2413 then NULL is returned.
2415 =for apidoc p||get_cv
2417 Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
2423 Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
2425 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
2426 /* XXX this is probably not what they think they're getting.
2427 * It has the same effect as "sub name;", i.e. just a forward
2430 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2432 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
2433 SV *const sv = newSVpvn_flags(name, len, flags & SVf_UTF8);
2434 return newSUB(start_subparse(FALSE, 0),
2435 newSVOP(OP_CONST, 0, sv),
2443 /* Nothing in core calls this now, but we can't replace it with a macro and
2444 move it to mathoms.c as a macro would evaluate name twice. */
2446 Perl_get_cv(pTHX_ const char *name, I32 flags)
2448 PERL_ARGS_ASSERT_GET_CV;
2450 return get_cvn_flags(name, strlen(name), flags);
2453 /* Be sure to refetch the stack pointer after calling these routines. */
2457 =head1 Callback Functions
2459 =for apidoc p||call_argv
2461 Performs a callback to the specified Perl sub. See L<perlcall>.
2467 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
2469 /* See G_* flags in cop.h */
2470 /* null terminated arg list */
2475 PERL_ARGS_ASSERT_CALL_ARGV;
2480 mXPUSHs(newSVpv(*argv,0));
2485 return call_pv(sub_name, flags);
2489 =for apidoc p||call_pv
2491 Performs a callback to the specified Perl sub. See L<perlcall>.
2497 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
2498 /* name of the subroutine */
2499 /* See G_* flags in cop.h */
2501 PERL_ARGS_ASSERT_CALL_PV;
2503 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
2507 =for apidoc p||call_method
2509 Performs a callback to the specified Perl method. The blessed object must
2510 be on the stack. See L<perlcall>.
2516 Perl_call_method(pTHX_ const char *methname, I32 flags)
2517 /* name of the subroutine */
2518 /* See G_* flags in cop.h */
2520 PERL_ARGS_ASSERT_CALL_METHOD;
2522 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
2525 /* May be called with any of a CV, a GV, or an SV containing the name. */
2527 =for apidoc p||call_sv
2529 Performs a callback to the Perl sub whose name is in the SV. See
2536 Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
2537 /* See G_* flags in cop.h */
2540 LOGOP myop; /* fake syntax tree node */
2545 bool oldcatch = CATCH_GET;
2547 OP* const oldop = PL_op;
2550 PERL_ARGS_ASSERT_CALL_SV;
2552 if (flags & G_DISCARD) {
2556 if (!(flags & G_WANT)) {
2557 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2562 Zero(&myop, 1, LOGOP);
2563 myop.op_next = NULL;
2564 if (!(flags & G_NOARGS))
2565 myop.op_flags |= OPf_STACKED;
2566 myop.op_flags |= OP_GIMME_REVERSE(flags);
2570 EXTEND(PL_stack_sp, 1);
2571 *++PL_stack_sp = sv;
2573 oldscope = PL_scopestack_ix;
2575 if (PERLDB_SUB && PL_curstash != PL_debstash
2576 /* Handle first BEGIN of -d. */
2577 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
2578 /* Try harder, since this may have been a sighandler, thus
2579 * curstash may be meaningless. */
2580 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
2581 && !(flags & G_NODEBUG))
2582 PL_op->op_private |= OPpENTERSUB_DB;
2584 if (flags & G_METHOD) {
2585 Zero(&method_op, 1, UNOP);
2586 method_op.op_next = PL_op;
2587 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2588 method_op.op_type = OP_METHOD;
2589 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
2590 myop.op_type = OP_ENTERSUB;
2591 PL_op = (OP*)&method_op;
2594 if (!(flags & G_EVAL)) {
2596 CALL_BODY_SUB((OP*)&myop);
2597 retval = PL_stack_sp - (PL_stack_base + oldmark);
2598 CATCH_SET(oldcatch);
2601 myop.op_other = (OP*)&myop;
2603 create_eval_scope(flags|G_FAKINGEVAL);
2611 CALL_BODY_SUB((OP*)&myop);
2612 retval = PL_stack_sp - (PL_stack_base + oldmark);
2613 if (!(flags & G_KEEPERR)) {
2621 /* my_exit() was called */
2622 PL_curstash = PL_defstash;
2625 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
2626 Perl_croak(aTHX_ "Callback called exit");
2631 PL_op = PL_restartop;
2635 PL_stack_sp = PL_stack_base + oldmark;
2636 if ((flags & G_WANT) == G_ARRAY)
2640 *++PL_stack_sp = &PL_sv_undef;
2645 if (PL_scopestack_ix > oldscope)
2646 delete_eval_scope();
2650 if (flags & G_DISCARD) {
2651 PL_stack_sp = PL_stack_base + oldmark;
2660 /* Eval a string. The G_EVAL flag is always assumed. */
2663 =for apidoc p||eval_sv
2665 Tells Perl to C<eval> the string in the SV.
2671 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
2673 /* See G_* flags in cop.h */
2677 UNOP myop; /* fake syntax tree node */
2678 VOL I32 oldmark = SP - PL_stack_base;
2681 OP* const oldop = PL_op;
2684 PERL_ARGS_ASSERT_EVAL_SV;
2686 if (flags & G_DISCARD) {
2693 Zero(PL_op, 1, UNOP);
2694 EXTEND(PL_stack_sp, 1);
2695 *++PL_stack_sp = sv;
2697 if (!(flags & G_NOARGS))
2698 myop.op_flags = OPf_STACKED;
2699 myop.op_next = NULL;
2700 myop.op_type = OP_ENTEREVAL;
2701 myop.op_flags |= OP_GIMME_REVERSE(flags);
2702 if (flags & G_KEEPERR)
2703 myop.op_flags |= OPf_SPECIAL;
2705 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2706 * before a PUSHEVAL, which corrupts the stack after a croak */
2707 TAINT_PROPER("eval_sv()");
2713 CALL_BODY_EVAL((OP*)&myop);
2714 retval = PL_stack_sp - (PL_stack_base + oldmark);
2715 if (!(flags & G_KEEPERR)) {
2723 /* my_exit() was called */
2724 PL_curstash = PL_defstash;
2727 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
2728 Perl_croak(aTHX_ "Callback called exit");
2733 PL_op = PL_restartop;
2737 PL_stack_sp = PL_stack_base + oldmark;
2738 if ((flags & G_WANT) == G_ARRAY)
2742 *++PL_stack_sp = &PL_sv_undef;
2748 if (flags & G_DISCARD) {
2749 PL_stack_sp = PL_stack_base + oldmark;
2759 =for apidoc p||eval_pv
2761 Tells Perl to C<eval> the given string and return an SV* result.
2767 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
2771 SV* sv = newSVpv(p, 0);
2773 PERL_ARGS_ASSERT_EVAL_PV;
2775 eval_sv(sv, G_SCALAR);
2782 if (croak_on_error && SvTRUE(ERRSV)) {
2783 Perl_croak(aTHX_ "%s", SvPVx_nolen_const(ERRSV));
2789 /* Require a module. */
2792 =head1 Embedding Functions
2794 =for apidoc p||require_pv
2796 Tells Perl to C<require> the file named by the string argument. It is
2797 analogous to the Perl code C<eval "require '$file'">. It's even
2798 implemented that way; consider using load_module instead.
2803 Perl_require_pv(pTHX_ const char *pv)
2809 PERL_ARGS_ASSERT_REQUIRE_PV;
2811 PUSHSTACKi(PERLSI_REQUIRE);
2813 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2814 eval_sv(sv_2mortal(sv), G_DISCARD);
2820 S_usage(pTHX_ const char *name) /* XXX move this out into a module ? */
2822 /* This message really ought to be max 23 lines.
2823 * Removed -h because the user already knows that option. Others? */
2825 static const char * const usage_msg[] = {
2826 "-0[octal] specify record separator (\\0, if no argument)",
2827 "-a autosplit mode with -n or -p (splits $_ into @F)",
2828 "-C[number/list] enables the listed Unicode features",
2829 "-c check syntax only (runs BEGIN and CHECK blocks)",
2830 "-d[:debugger] run program under debugger",
2831 "-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2832 "-e program one line of program (several -e's allowed, omit programfile)",
2833 "-E program like -e, but enables all optional features",
2834 "-f don't do $sitelib/sitecustomize.pl at startup",
2835 "-F/pattern/ split() pattern for -a switch (//'s are optional)",
2836 "-i[extension] edit <> files in place (makes backup if extension supplied)",
2837 "-Idirectory specify @INC/#include directory (several -I's allowed)",
2838 "-l[octal] enable line ending processing, specifies line terminator",
2839 "-[mM][-]module execute \"use/no module...\" before executing program",
2840 "-n assume \"while (<>) { ... }\" loop around program",
2841 "-p assume loop like -n but print line also, like sed",
2842 "-s enable rudimentary parsing for switches after programfile",
2843 "-S look for programfile using PATH environment variable",
2844 "-t enable tainting warnings",
2845 "-T enable tainting checks",
2846 "-u dump core after parsing program",
2847 "-U allow unsafe operations",
2848 "-v print version, subversion (includes VERY IMPORTANT perl info)",
2849 "-V[:variable] print configuration summary (or a single Config.pm variable)",
2850 "-w enable many useful warnings (RECOMMENDED)",
2851 "-W enable all warnings",
2852 "-x[directory] strip off text before #!perl line and perhaps cd to directory",
2853 "-X disable all warnings",
2857 const char * const *p = usage_msg;
2859 PERL_ARGS_ASSERT_USAGE;
2861 PerlIO_printf(PerlIO_stdout(),
2862 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2865 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
2868 /* convert a string of -D options (or digits) into an int.
2869 * sets *s to point to the char after the options */
2873 Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
2875 static const char * const usage_msgd[] = {
2876 " Debugging flag values: (see also -d)",
2877 " p Tokenizing and parsing (with v, displays parse stack)",
2878 " s Stack snapshots (with v, displays all stacks)",
2879 " l Context (loop) stack processing",
2880 " t Trace execution",
2881 " o Method and overloading resolution",
2882 " c String/numeric conversions",
2883 " P Print profiling info, source file input state",
2884 " m Memory and SV allocation",
2885 " f Format processing",
2886 " r Regular expression parsing and execution",
2887 " x Syntax tree dump",
2888 " u Tainting checks",
2889 " H Hash dump -- usurps values()",
2890 " X Scratchpad allocation",
2893 " R Include reference counts of dumped variables (eg when using -Ds)",
2894 " J Do not s,t,P-debug (Jump over) opcodes within package DB",
2895 " v Verbose: use in conjunction with other flags",
2897 " A Consistency checks on internal structures",
2898 " q quiet - currently only suppresses the 'EXECUTING' message",
2903 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
2906 /* if adding extra options, remember to update DEBUG_MASK */
2907 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAq";
2909 for (; isALNUM(**s); (*s)++) {
2910 const char * const d = strchr(debopts,**s);
2912 i |= 1 << (d - debopts);
2913 else if (ckWARN_d(WARN_DEBUGGING))
2914 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2915 "invalid option -D%c, use -D'' to see choices\n", **s);
2918 else if (isDIGIT(**s)) {
2920 for (; isALNUM(**s); (*s)++) ;
2922 else if (givehelp) {
2923 const char *const *p = usage_msgd;
2924 while (*p) PerlIO_printf(PerlIO_stdout(), "%s\n", *p++);
2927 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
2928 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2929 "-Dp not implemented on this platform\n");
2935 /* This routine handles any switches that can be given during run */
2938 Perl_moreswitches(pTHX_ const char *s)
2942 const char option = *s; /* used to remember option in -m/-M code */
2944 PERL_ARGS_ASSERT_MORESWITCHES;
2952 SvREFCNT_dec(PL_rs);
2953 if (s[1] == 'x' && s[2]) {
2954 const char *e = s+=2;
2960 flags = PERL_SCAN_SILENT_ILLDIGIT;
2961 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
2962 if (s + numlen < e) {
2963 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
2967 PL_rs = newSVpvs("");
2968 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
2969 tmps = (U8*)SvPVX(PL_rs);
2970 uvchr_to_utf8(tmps, rschar);
2971 SvCUR_set(PL_rs, UNISKIP(rschar));
2976 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
2977 if (rschar & ~((U8)~0))
2978 PL_rs = &PL_sv_undef;
2979 else if (!rschar && numlen >= 2)
2980 PL_rs = newSVpvs("");
2982 char ch = (char)rschar;
2983 PL_rs = newSVpvn(&ch, 1);
2986 sv_setsv(get_sv("/", GV_ADD), PL_rs);
2991 PL_unicode = parse_unicode_opts( (const char **)&s );
2992 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
2998 while (*s && !isSPACE(*s)) ++s;
2999 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
3010 forbid_setid('d', FALSE);
3013 /* -dt indicates to the debugger that threads will be used */
3014 if (*s == 't' && !isALNUM(s[1])) {
3016 my_setenv("PERL5DB_THREADED", "1");
3019 /* The following permits -d:Mod to accepts arguments following an =
3020 in the fashion that -MSome::Mod does. */
3021 if (*s == ':' || *s == '=') {
3022 const char *start = ++s;
3023 const char *const end = s + strlen(s);
3024 SV * const sv = newSVpvs("use Devel::");
3026 /* We now allow -d:Module=Foo,Bar */
3027 while(isALNUM(*s) || *s==':') ++s;
3029 sv_catpvn(sv, start, end - start);
3031 sv_catpvn(sv, start, s-start);
3032 /* Don't use NUL as q// delimiter here, this string goes in the
3034 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
3037 my_setenv("PERL5DB", SvPV_nolen_const(sv));
3041 PL_perldb = PERLDB_ALL;
3048 forbid_setid('D', FALSE);
3050 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
3051 #else /* !DEBUGGING */
3052 if (ckWARN_d(WARN_DEBUGGING))
3053 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3054 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
3055 for (s++; isALNUM(*s); s++) ;
3060 usage(PL_origargv[0]);
3063 Safefree(PL_inplace);
3064 #if defined(__CYGWIN__) /* do backup extension automagically */
3065 if (*(s+1) == '\0') {
3066 PL_inplace = savepvs(".bak");
3069 #endif /* __CYGWIN__ */
3071 const char * const start = ++s;
3072 while (*s && !isSPACE(*s))
3075 PL_inplace = savepvn(start, s - start);
3079 if (*s == '-') /* Additional switches on #! line. */
3083 case 'I': /* -I handled both here and in parse_body() */
3084 forbid_setid('I', FALSE);
3086 while (*s && isSPACE(*s))
3091 /* ignore trailing spaces (possibly followed by other switches) */
3093 for (e = p; *e && !isSPACE(*e); e++) ;
3097 } while (*p && *p != '-');
3099 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
3105 Perl_croak(aTHX_ "No directory specified for -I");
3111 SvREFCNT_dec(PL_ors_sv);
3117 PL_ors_sv = newSVpvs("\n");
3118 numlen = 3 + (*s == '0');
3119 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
3123 if (RsPARA(PL_rs)) {
3124 PL_ors_sv = newSVpvs("\n\n");
3127 PL_ors_sv = newSVsv(PL_rs);
3132 forbid_setid('M', FALSE); /* XXX ? */
3135 forbid_setid('m', FALSE); /* XXX ? */
3140 const char *use = "use ";
3142 /* -M-foo == 'no foo' */
3143 /* Leading space on " no " is deliberate, to make both
3144 possibilities the same length. */
3145 if (*s == '-') { use = " no "; ++s; }
3146 sv = newSVpvn(use,4);
3148 /* We allow -M'Module qw(Foo Bar)' */
3149 while(isALNUM(*s) || *s==':') {
3158 Perl_croak(aTHX_ "Module name required with -%c option",
3161 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3162 "contains single ':'",
3163 (int)(s - start), start, option);
3164 end = s + strlen(s);
3166 sv_catpvn(sv, start, end - start);
3167 if (option == 'm') {
3169 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
3170 sv_catpvs( sv, " ()");
3173 sv_catpvn(sv, start, s-start);
3174 /* Use NUL as q''-delimiter. */
3175 sv_catpvs(sv, " split(/,/,q\0");
3177 sv_catpvn(sv, s, end - s);
3178 sv_catpvs(sv, "\0)");
3181 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
3184 Perl_croak(aTHX_ "Missing argument to -%c", option);
3195 forbid_setid('s', FALSE);
3196 PL_doswitches = TRUE;
3210 #ifdef MACOS_TRADITIONAL
3211 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
3213 PL_do_undump = TRUE;
3221 if (!sv_derived_from(PL_patchlevel, "version"))
3222 upg_version(PL_patchlevel, TRUE);
3225 SV* level= vstringify(PL_patchlevel);
3226 #ifdef PERL_PATCHNUM
3227 # ifdef PERL_GIT_UNCOMMITTED_CHANGES
3228 SV *num = newSVpvs(PERL_PATCHNUM "*");
3230 SV *num = newSVpvs(PERL_PATCHNUM);
3233 if (sv_len(num)>=sv_len(level) && strnEQ(SvPV_nolen(num),SvPV_nolen(level),sv_len(level))) {
3234 SvREFCNT_dec(level);
3237 Perl_sv_catpvf(aTHX_ level, " (%"SVf")", num);
3241 PerlIO_printf(PerlIO_stdout(),
3242 "\nThis is perl, %"SVf
3246 SvREFCNT_dec(level);
3249 /* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3250 PerlIO_printf(PerlIO_stdout(),
3251 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
3252 SVfARG(vstringify(PL_patchlevel))));
3253 PerlIO_printf(PerlIO_stdout(),
3254 Perl_form(aTHX_ " built under %s at %s %s\n",
3255 OSNAME, __DATE__, __TIME__));
3256 PerlIO_printf(PerlIO_stdout(),
3257 Perl_form(aTHX_ " OS Specific Release: %s\n",
3260 #if defined(LOCAL_PATCH_COUNT)
3261 if (LOCAL_PATCH_COUNT > 0)
3262 PerlIO_printf(PerlIO_stdout(),
3263 "\n(with %d registered patch%s, "
3264 "see perl -V for more detail)",
3266 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
3269 PerlIO_printf(PerlIO_stdout(),
3270 "\n\nCopyright 1987-2009, Larry Wall\n");
3271 #ifdef MACOS_TRADITIONAL
3272 PerlIO_printf(PerlIO_stdout(),
3273 "\nMac OS port Copyright 1991-2002, Matthias Neeracher;\n"
3274 "maintained by Chris Nandor\n");
3277 PerlIO_printf(PerlIO_stdout(),
3278 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
3281 PerlIO_printf(PerlIO_stdout(),
3282 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3283 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
3286 PerlIO_printf(PerlIO_stdout(),
3287 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
3288 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
3291 PerlIO_printf(PerlIO_stdout(),
3292 "atariST series port, ++jrb bammi@cadence.com\n");
3295 PerlIO_printf(PerlIO_stdout(),
3296 "BeOS port Copyright Tom Spindler, 1997-1999\n");
3299 PerlIO_printf(PerlIO_stdout(),
3300 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n");
3303 PerlIO_printf(PerlIO_stdout(),
3304 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
3307 PerlIO_printf(PerlIO_stdout(),
3308 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
3311 PerlIO_printf(PerlIO_stdout(),
3312 "VM/ESA port by Neale Ferguson, 1998-1999\n");
3315 PerlIO_printf(PerlIO_stdout(),
3316 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
3319 PerlIO_printf(PerlIO_stdout(),
3320 "MiNT port by Guido Flohr, 1997-1999\n");
3323 PerlIO_printf(PerlIO_stdout(),
3324 "EPOC port by Olaf Flebbe, 1999-2002\n");
3327 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
3328 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
3331 #ifdef __SYMBIAN32__
3332 PerlIO_printf(PerlIO_stdout(),
3333 "Symbian port by Nokia, 2004-2005\n");
3335 #ifdef BINARY_BUILD_NOTICE
3336 BINARY_BUILD_NOTICE;
3338 PerlIO_printf(PerlIO_stdout(),
3340 Perl may be copied only under the terms of either the Artistic License or the\n\
3341 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
3342 Complete documentation for Perl, including FAQ lists, should be found on\n\
3343 this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
3344 Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
3347 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
3348 PL_dowarn |= G_WARN_ON;
3353 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
3354 if (!specialWARN(PL_compiling.cop_warnings))
3355 PerlMemShared_free(PL_compiling.cop_warnings);
3356 PL_compiling.cop_warnings = pWARN_ALL ;
3360 PL_dowarn = G_WARN_ALL_OFF;
3361 if (!specialWARN(PL_compiling.cop_warnings))
3362 PerlMemShared_free(PL_compiling.cop_warnings);
3363 PL_compiling.cop_warnings = pWARN_NONE ;
3370 if (s[0] == '-') /* Additional switches on #! line. */
3375 #if defined(WIN32) || !defined(PERL_STRICT_CR)
3381 #ifdef ALTERNATE_SHEBANG
3382 case 'S': /* OS/2 needs -S on "extproc" line. */
3386 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
3391 /* compliments of Tom Christiansen */
3393 /* unexec() can be found in the Gnu emacs distribution */
3394 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
3397 Perl_my_unexec(pTHX)
3399 PERL_UNUSED_CONTEXT;
3401 SV * prog = newSVpv(BIN_EXP, 0);
3402 SV * file = newSVpv(PL_origfilename, 0);
3406 sv_catpvs(prog, "/perl");
3407 sv_catpvs(file, ".perldump");
3409 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3410 /* unexec prints msg to stderr in case of failure */
3411 PerlProc_exit(status);
3414 # include <lib$routines.h>
3415 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
3416 # elif defined(WIN32) || defined(__CYGWIN__)
3417 Perl_croak(aTHX_ "dump is not supported");
3419 ABORT(); /* for use with undump */
3424 /* initialize curinterp */
3430 # define PERLVAR(var,type)
3431 # define PERLVARA(var,n,type)
3432 # if defined(PERL_IMPLICIT_CONTEXT)
3433 # define PERLVARI(var,type,init) aTHX->var = init;
3434 # define PERLVARIC(var,type,init) aTHX->var = init;
3436 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
3437 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
3439 # include "intrpvar.h"
3445 # define PERLVAR(var,type)
3446 # define PERLVARA(var,n,type)
3447 # define PERLVARI(var,type,init) PL_##var = init;
3448 # define PERLVARIC(var,type,init) PL_##var = init;
3449 # include "intrpvar.h"
3456 /* As these are inside a structure, PERLVARI isn't capable of initialising
3458 PL_reg_oldcurpm = PL_reg_curpm = NULL;
3459 PL_reg_poscache = PL_reg_starttry = NULL;
3463 S_init_main_stash(pTHX)
3468 PL_curstash = PL_defstash = newHV();
3469 /* We know that the string "main" will be in the global shared string
3470 table, so it's a small saving to use it rather than allocate another
3472 PL_curstname = newSVpvs_share("main");
3473 gv = gv_fetchpvs("main::", GV_ADD|GV_NOTQUAL, SVt_PVHV);
3474 /* If we hadn't caused another reference to "main" to be in the shared
3475 string table above, then it would be worth reordering these two,
3476 because otherwise all we do is delete "main" from it as a consequence
3477 of the SvREFCNT_dec, only to add it again with hv_name_set */
3478 SvREFCNT_dec(GvHV(gv));
3479 hv_name_set(PL_defstash, "main", 4, 0);
3480 GvHV(gv) = MUTABLE_HV(SvREFCNT_inc_simple(PL_defstash));
3482 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpvs("INC", GV_ADD|GV_NOTQUAL,
3484 SvREFCNT_inc_simple_void(PL_incgv); /* Don't allow it to be freed */
3485 GvMULTI_on(PL_incgv);
3486 PL_hintgv = gv_fetchpvs("\010", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^H */
3487 GvMULTI_on(PL_hintgv);
3488 PL_defgv = gv_fetchpvs("_", GV_ADD|GV_NOTQUAL, SVt_PVAV);
3489 SvREFCNT_inc_simple_void(PL_defgv);
3490 PL_errgv = gv_HVadd(gv_fetchpvs("@", GV_ADD|GV_NOTQUAL, SVt_PV));
3491 SvREFCNT_inc_simple_void(PL_errgv);
3492 GvMULTI_on(PL_errgv);
3493 PL_replgv = gv_fetchpvs("\022", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^R */
3494 GvMULTI_on(PL_replgv);
3495 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
3496 #ifdef PERL_DONT_CREATE_GVSV
3499 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
3501 PL_curstash = PL_defstash;
3502 CopSTASH_set(&PL_compiling, PL_defstash);
3503 PL_debstash = GvHV(gv_fetchpvs("DB::", GV_ADDMULTI, SVt_PVHV));
3504 PL_globalstash = GvHV(gv_fetchpvs("CORE::GLOBAL::", GV_ADDMULTI,
3506 /* We must init $/ before switches are processed. */
3507 sv_setpvs(get_sv("/", GV_ADD), "\n");
3511 S_open_script(pTHX_ const char *scriptname, bool dosearch,
3512 bool *suidscript, PerlIO **rsfpp)
3517 PERL_ARGS_ASSERT_OPEN_SCRIPT;
3520 PL_origfilename = savepvs("-e");
3523 /* if find_script() returns, it returns a malloc()-ed value */
3524 scriptname = PL_origfilename = find_script(scriptname, dosearch, NULL, 1);
3526 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
3527 const char *s = scriptname + 8;
3533 * Tell apart "normal" usage of fdscript, e.g.
3534 * with bash on FreeBSD:
3535 * perl <( echo '#!perl -DA'; echo 'print "$0\n"')
3536 * from usage in suidperl.
3537 * Does any "normal" usage leave garbage after the number???
3538 * Is it a mistake to use a similar /dev/fd/ construct for
3543 * Be supersafe and do some sanity-checks.
3544 * Still, can we be sure we got the right thing?
3547 Perl_croak(aTHX_ "Wrong syntax (suid) fd script name \"%s\"\n", s);
3550 Perl_croak(aTHX_ "Missing (suid) fd script name\n");
3552 scriptname = savepv(s + 1);
3553 Safefree(PL_origfilename);
3554 PL_origfilename = (char *)scriptname;
3559 CopFILE_free(PL_curcop);
3560 CopFILE_set(PL_curcop, PL_origfilename);
3561 if (*PL_origfilename == '-' && PL_origfilename[1] == '\0')
3562 scriptname = (char *)"";
3563 if (fdscript >= 0) {
3564 *rsfpp = PerlIO_fdopen(fdscript,PERL_SCRIPT_MODE);
3565 # if defined(HAS_FCNTL) && defined(F_SETFD)
3567 /* ensure close-on-exec */
3568 fcntl(PerlIO_fileno(*rsfpp),F_SETFD,1);
3571 else if (!*scriptname) {
3572 forbid_setid(0, *suidscript);
3573 *rsfpp = PerlIO_stdin();
3576 #ifdef FAKE_BIT_BUCKET
3577 /* This hack allows one not to have /dev/null (or BIT_BUCKET as it
3578 * is called) and still have the "-e" work. (Believe it or not,
3579 * a /dev/null is required for the "-e" to work because source
3580 * filter magic is used to implement it. ) This is *not* a general
3581 * replacement for a /dev/null. What we do here is create a temp
3582 * file (an empty file), open up that as the script, and then
3583 * immediately close and unlink it. Close enough for jazz. */
3584 #define FAKE_BIT_BUCKET_PREFIX "/tmp/perlnull-"
3585 #define FAKE_BIT_BUCKET_SUFFIX "XXXXXXXX"
3586 #define FAKE_BIT_BUCKET_TEMPLATE FAKE_BIT_BUCKET_PREFIX FAKE_BIT_BUCKET_SUFFIX
3587 char tmpname[sizeof(FAKE_BIT_BUCKET_TEMPLATE)] = {
3588 FAKE_BIT_BUCKET_TEMPLATE
3590 const char * const err = "Failed to create a fake bit bucket";
3591 if (strEQ(scriptname, BIT_BUCKET)) {
3592 #ifdef HAS_MKSTEMP /* Hopefully mkstemp() is safe here. */
3593 int tmpfd = mkstemp(tmpname);
3595 scriptname = tmpname;
3598 Perl_croak(aTHX_ err);
3601 scriptname = mktemp(tmpname);
3603 Perl_croak(aTHX_ err);
3608 *rsfpp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
3609 #ifdef FAKE_BIT_BUCKET
3610 if (memEQ(scriptname, FAKE_BIT_BUCKET_PREFIX,
3611 sizeof(FAKE_BIT_BUCKET_PREFIX) - 1)
3612 && strlen(scriptname) == sizeof(tmpname) - 1) {
3615 scriptname = BIT_BUCKET;
3617 # if defined(HAS_FCNTL) && defined(F_SETFD)
3619 /* ensure close-on-exec */
3620 fcntl(PerlIO_fileno(*rsfpp),F_SETFD,1);
3624 /* PSz 16 Sep 03 Keep neat error message */
3626 Perl_croak(aTHX_ "Can't open "BIT_BUCKET": %s\n", Strerror(errno));
3628 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3629 CopFILE(PL_curcop), Strerror(errno));
3635 * I_SYSSTATVFS HAS_FSTATVFS
3637 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
3638 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
3639 * here so that metaconfig picks them up. */
3642 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
3643 /* Don't even need this function. */
3646 S_validate_suid(pTHX_ PerlIO *rsfp)
3648 PERL_ARGS_ASSERT_VALIDATE_SUID;
3650 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
3653 PerlLIO_fstat(PerlIO_fileno(rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3654 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3656 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3659 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3660 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3661 /* not set-id, must be wrapped */
3664 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3667 S_find_beginning(pTHX_ SV* linestr_sv, PerlIO *rsfp)
3671 register const char *s2;
3672 #ifdef MACOS_TRADITIONAL
3676 PERL_ARGS_ASSERT_FIND_BEGINNING;
3678 /* skip forward in input to the real script? */
3680 #ifdef MACOS_TRADITIONAL
3681 /* Since the Mac OS does not honor #! arguments for us, we do it ourselves */
3683 while (PL_doextract || gMacPerl_AlwaysExtract) {
3684 if ((s = sv_gets(linestr_sv, rsfp, 0)) == NULL) {
3685 if (!gMacPerl_AlwaysExtract)
3686 Perl_croak(aTHX_ "No Perl script found in input\n");
3688 if (PL_doextract) /* require explicit override ? */
3689 if (!OverrideExtract(PL_origfilename))
3690 Perl_croak(aTHX_ "User aborted script\n");
3692 PL_doextract = FALSE;
3694 /* Pater peccavi, file does not have #! */
3695 PerlIO_rewind(rsfp);
3700 while (PL_doextract) {
3701 if ((s = sv_gets(linestr_sv, rsfp, 0)) == NULL)
3702 Perl_croak(aTHX_ "No Perl script found in input\n");
3705 if (*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))) {
3706 PerlIO_ungetc(rsfp, '\n'); /* to keep line count right */
3707 PL_doextract = FALSE;
3708 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3710 while (*s == ' ' || *s == '\t') s++;
3712 while (isDIGIT(s2[-1]) || s2[-1] == '-' || s2[-1] == '.'
3713 || s2[-1] == '_') s2--;
3714 if (strnEQ(s2-4,"perl",4))
3715 while ((s = moreswitches(s)))
3718 #ifdef MACOS_TRADITIONAL
3719 /* We are always searching for the #!perl line in MacPerl,
3720 * so if we find it, still keep the line count correct
3721 * by counting lines we already skipped over
3723 for (; maclines > 0 ; maclines--)
3724 PerlIO_ungetc(rsfp, '\n');
3728 /* gMacPerl_AlwaysExtract is false in MPW tool */
3729 } else if (gMacPerl_AlwaysExtract) {
3741 PL_uid = PerlProc_getuid();
3742 PL_euid = PerlProc_geteuid();
3743 PL_gid = PerlProc_getgid();
3744 PL_egid = PerlProc_getegid();
3746 PL_uid |= PL_gid << 16;
3747 PL_euid |= PL_egid << 16;
3749 /* Should not happen: */
3750 CHECK_MALLOC_TAINT(PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3751 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3754 * Should go by suidscript, not uid!=euid: why disallow
3755 * system("ls") in scripts run from setuid things?
3756 * Or, is this run before we check arguments and set suidscript?
3757 * What about SETUID_SCRIPTS_ARE_SECURE_NOW: could we use fdscript then?
3758 * (We never have suidscript, can we be sure to have fdscript?)
3759 * Or must then go by UID checks? See comments in forbid_setid also.
3763 /* This is used very early in the lifetime of the program,
3764 * before even the options are parsed, so PL_tainting has
3765 * not been initialized properly. */
3767 Perl_doing_taint(int argc, char *argv[], char *envp[])
3769 #ifndef PERL_IMPLICIT_SYS
3770 /* If we have PERL_IMPLICIT_SYS we can't call getuid() et alia
3771 * before we have an interpreter-- and the whole point of this
3772 * function is to be called at such an early stage. If you are on
3773 * a system with PERL_IMPLICIT_SYS but you do have a concept of
3774 * "tainted because running with altered effective ids', you'll
3775 * have to add your own checks somewhere in here. The two most
3776 * known samples of 'implicitness' are Win32 and NetWare, neither
3777 * of which has much of concept of 'uids'. */
3778 int uid = PerlProc_getuid();
3779 int euid = PerlProc_geteuid();
3780 int gid = PerlProc_getgid();
3781 int egid = PerlProc_getegid();
3788 if (uid && (euid != uid || egid != gid))
3790 #endif /* !PERL_IMPLICIT_SYS */
3791 /* This is a really primitive check; environment gets ignored only
3792 * if -T are the first chars together; otherwise one gets
3793 * "Too late" message. */
3794 if ( argc > 1 && argv[1][0] == '-'
3795 && (argv[1][1] == 't' || argv[1][1] == 'T') )
3800 /* Passing the flag as a single char rather than a string is a slight space
3801 optimisation. The only message that isn't /^-.$/ is
3802 "program input from stdin", which is substituted in place of '\0', which
3803 could never be a command line flag. */
3805 S_forbid_setid(pTHX_ const char flag, const bool suidscript) /* g */
3808 char string[3] = "-x";
3809 const char *message = "program input from stdin";
3816 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
3817 if (PL_euid != PL_uid)
3818 Perl_croak(aTHX_ "No %s allowed while running setuid", message);
3819 if (PL_egid != PL_gid)
3820 Perl_croak(aTHX_ "No %s allowed while running setgid", message);
3821 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3823 Perl_croak(aTHX_ "No %s allowed with (suid) fdscript", message);
3827 Perl_init_debugger(pTHX)
3830 HV * const ostash = PL_curstash;
3832 PL_curstash = PL_debstash;
3833 PL_dbargs = GvAV(gv_AVadd((gv_fetchpvs("DB::args", GV_ADDMULTI,
3835 AvREAL_off(PL_dbargs);
3836 PL_DBgv = gv_fetchpvs("DB::DB", GV_ADDMULTI, SVt_PVGV);
3837 PL_DBline = gv_fetchpvs("DB::dbline", GV_ADDMULTI, SVt_PVAV);
3838 PL_DBsub = gv_HVadd(gv_fetchpvs("DB::sub", GV_ADDMULTI, SVt_PVHV));
3839 PL_DBsingle = GvSV((gv_fetchpvs("DB::single", GV_ADDMULTI, SVt_PV)));
3840 sv_setiv(PL_DBsingle, 0);
3841 PL_DBtrace = GvSV((gv_fetchpvs("DB::trace", GV_ADDMULTI, SVt_PV)));
3842 sv_setiv(PL_DBtrace, 0);
3843 PL_DBsignal = GvSV((gv_fetchpvs("DB::signal", GV_ADDMULTI, SVt_PV)));
3844 sv_setiv(PL_DBsignal, 0);
3845 PL_curstash = ostash;
3848 #ifndef STRESS_REALLOC
3849 #define REASONABLE(size) (size)
3851 #define REASONABLE(size) (1) /* unreasonable */
3855 Perl_init_stacks(pTHX)
3858 /* start with 128-item stack and 8K cxstack */
3859 PL_curstackinfo = new_stackinfo(REASONABLE(128),
3860 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3861 PL_curstackinfo->si_type = PERLSI_MAIN;
3862 PL_curstack = PL_curstackinfo->si_stack;
3863 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
3865 PL_stack_base = AvARRAY(PL_curstack);
3866 PL_stack_sp = PL_stack_base;
3867 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
3869 Newx(PL_tmps_stack,REASONABLE(128),SV*);
3872 PL_tmps_max = REASONABLE(128);
3874 Newx(PL_markstack,REASONABLE(32),I32);
3875 PL_markstack_ptr = PL_markstack;
3876 PL_markstack_max = PL_markstack + REASONABLE(32);
3880 Newx(PL_scopestack,REASONABLE(32),I32);
3881 PL_scopestack_ix = 0;
3882 PL_scopestack_max = REASONABLE(32);
3884 Newx(PL_savestack,REASONABLE(128),ANY);
3885 PL_savestack_ix = 0;
3886 PL_savestack_max = REASONABLE(128);
3895 while (PL_curstackinfo->si_next)
3896 PL_curstackinfo = PL_curstackinfo->si_next;
3897 while (PL_curstackinfo) {
3898 PERL_SI *p = PL_curstackinfo->si_prev;
3899 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3900 Safefree(PL_curstackinfo->si_cxstack);
3901 Safefree(PL_curstackinfo);
3902 PL_curstackinfo = p;
3904 Safefree(PL_tmps_stack);
3905 Safefree(PL_markstack);
3906 Safefree(PL_scopestack);
3907 Safefree(PL_savestack);
3912 S_init_predump_symbols(pTHX)
3918 sv_setpvs(get_sv("\"", GV_ADD), " ");
3919 PL_ofsgv = (GV*)SvREFCNT_inc(gv_fetchpvs(",", GV_ADD|GV_NOTQUAL, SVt_PV));
3921 PL_stdingv = gv_fetchpvs("STDIN", GV_ADD|GV_NOTQUAL, SVt_PVIO);
3922 GvMULTI_on(PL_stdingv);
3923 io = GvIOp(PL_stdingv);
3924 IoTYPE(io) = IoTYPE_RDONLY;
3925 IoIFP(io) = PerlIO_stdin();
3926 tmpgv = gv_fetchpvs("stdin", GV_ADD|GV_NOTQUAL, SVt_PV);
3928 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
3930 tmpgv = gv_fetchpvs("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
3933 IoTYPE(io) = IoTYPE_WRONLY;
3934 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
3936 tmpgv = gv_fetchpvs("stdout", GV_ADD|GV_NOTQUAL, SVt_PV);
3938 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
3940 PL_stderrgv = gv_fetchpvs("STDERR", GV_ADD|GV_NOTQUAL, SVt_PVIO);
3941 GvMULTI_on(PL_stderrgv);
3942 io = GvIOp(PL_stderrgv);
3943 IoTYPE(io) = IoTYPE_WRONLY;
3944 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
3945 tmpgv = gv_fetchpvs("stderr", GV_ADD|GV_NOTQUAL, SVt_PV);
3947 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
3949 PL_statname = newSV(0); /* last filename we did stat on */
3951 Safefree(PL_osname);
3952 PL_osname = savepv(OSNAME);
3956 Perl_init_argv_symbols(pTHX_ register int argc, register char **argv)
3960 PERL_ARGS_ASSERT_INIT_ARGV_SYMBOLS;
3962 argc--,argv++; /* skip name of script */
3963 if (PL_doswitches) {
3964 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3968 if (argv[0][1] == '-' && !argv[0][2]) {
3972 if ((s = strchr(argv[0], '='))) {
3973 const char *const start_name = argv[0] + 1;
3974 sv_setpv(GvSV(gv_fetchpvn_flags(start_name, s - start_name,
3975 TRUE, SVt_PV)), s + 1);
3978 sv_setiv(GvSV(gv_fetchpv(argv[0]+1, GV_ADD, SVt_PV)),1);
3981 if ((PL_argvgv = gv_fetchpvs("ARGV", GV_ADD|GV_NOTQUAL, SVt_PVAV))) {
3982 GvMULTI_on(PL_argvgv);
3983 (void)gv_AVadd(PL_argvgv);
3984 av_clear(GvAVn(PL_argvgv));
3985 for (; argc > 0; argc--,argv++) {
3986 SV * const sv = newSVpv(argv[0],0);
3987 av_push(GvAVn(PL_argvgv),sv);
3988 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
3989 if (PL_unicode & PERL_UNICODE_ARGV_FLAG)
3992 if (PL_unicode & PERL_UNICODE_WIDESYSCALLS_FLAG) /* Sarathy? */
3993 (void)sv_utf8_decode(sv);
3999 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
4004 PERL_ARGS_ASSERT_INIT_POSTDUMP_SYMBOLS;
4006 PL_toptarget = newSV_type(SVt_PVFM);
4007 sv_setpvs(PL_toptarget, "");
4008 PL_bodytarget = newSV_type(SVt_PVFM);
4009 sv_setpvs(PL_bodytarget, "");
4010 PL_formtarget = PL_bodytarget;
4014 init_argv_symbols(argc,argv);
4016 if ((tmpgv = gv_fetchpvs("0", GV_ADD|GV_NOTQUAL, SVt_PV))) {
4017 #ifdef MACOS_TRADITIONAL
4018 /* $0 is not majick on a Mac */
4019 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
4021 sv_setpv(GvSV(tmpgv),PL_origfilename);
4023 GV * const gv = gv_fetchpv("0", GV_ADD, SVt_PV);
4025 sv_magic(GvSV(gv), MUTABLE_SV(gv), PERL_MAGIC_sv, "0", 1);
4029 if ((PL_envgv = gv_fetchpvs("ENV", GV_ADD|GV_NOTQUAL, SVt_PVHV))) {
4031 bool env_is_not_environ;
4032 GvMULTI_on(PL_envgv);
4033 hv = GvHVn(PL_envgv);
4034 hv_magic(hv, NULL, PERL_MAGIC_env);
4036 #ifdef USE_ENVIRON_ARRAY
4037 /* Note that if the supplied env parameter is actually a copy
4038 of the global environ then it may now point to free'd memory
4039 if the environment has been modified since. To avoid this
4040 problem we treat env==NULL as meaning 'use the default'
4044 env_is_not_environ = env != environ;
4045 if (env_is_not_environ
4046 # ifdef USE_ITHREADS
4047 && PL_curinterp == aTHX
4056 for (; *env; env++) {
4059 if (!(s = strchr(old_var,'=')) || s == old_var)
4062 #if defined(MSDOS) && !defined(DJGPP)
4064 (void)strupr(old_var);
4067 sv = newSVpv(s+1, 0);
4068 (void)hv_store(hv, old_var, s - old_var, sv, 0);
4069 if (env_is_not_environ)
4073 #endif /* USE_ENVIRON_ARRAY */
4074 #endif /* !PERL_MICRO */
4077 if ((tmpgv = gv_fetchpvs("$", GV_ADD|GV_NOTQUAL, SVt_PV))) {
4078 SvREADONLY_off(GvSV(tmpgv));
4079 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
4080 SvREADONLY_on(GvSV(tmpgv));
4082 #ifdef THREADS_HAVE_PIDS
4083 PL_ppid = (IV)getppid();
4086 /* touch @F array to prevent spurious warnings 20020415 MJD */
4088 (void) get_av("main::F", GV_ADD | GV_ADDMULTI);
4093 S_init_perllib(pTHX_ U32 old_vers)
4103 s = PerlEnv_getenv("PERL5LIB");
4105 * It isn't possible to delete an environment variable with
4106 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4107 * case we treat PERL5LIB as undefined if it has a zero-length value.
4109 #if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
4110 if (s && *s != '\0')
4114 incpush_use_sep(s, 0, old_vers ? old_vers : INCPUSH_ADD_SUB_DIRS);
4115 else if (!old_vers) {
4116 s = PerlEnv_getenv("PERLLIB");
4118 incpush_use_sep(s, 0, 0);
4121 /* Treat PERL5?LIB as a possible search list logical name -- the
4122 * "natural" VMS idiom for a Unix path string. We allow each
4123 * element to be a set of |-separated directories for compatibility.
4127 if (my_trnlnm("PERL5LIB",buf,0))
4129 incpush_use_sep(buf, 0, old_vers ? old_vers : INCPUSH_ADD_SUB_DIRS);
4130 } while (my_trnlnm("PERL5LIB",buf,++idx));
4132 while (my_trnlnm("PERLLIB",buf,idx++))
4133 incpush_use_sep(buf, 0, 0);
4137 /* Use the ~-expanded versions of APPLLIB (undocumented),
4138 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
4142 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP), INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4144 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP), old_vers|INCPUSH_CAN_RELOCATE);
4148 #ifdef MACOS_TRADITIONAL
4151 SV * privdir = newSV(0);
4152 char * macperl = PerlEnv_getenv("MACPERL");
4159 S_incpush_use_sep(aTHX_ STR_WITH_LEN(ARCHLIB_EXP), INCPUSH_CAN_RELOCATE);
4162 Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl);
4163 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
4164 incpush_use_sep(SvPVX(privdir), SvCUR(privdir), INCPUSH_ADD_SUB_DIRS);
4165 Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl);
4166 if (PerlLIO_stat(SvPVX(privdir), SvCUR(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
4167 incpush_use_sep(SvPVX(privdir), SvCUR(privdir), INCPUSH_ADD_SUB_DIRS);
4169 SvREFCNT_dec(privdir);
4171 S_incpush(aTHX_ STR_WITH_LEN(":"), 0);
4177 /* sitearch is always relative to sitelib on Windows for
4178 * DLL-based path intuition to work correctly */
4179 # if !defined(WIN32)
4180 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITEARCH_EXP), INCPUSH_CAN_RELOCATE);
4186 /* this picks up sitearch as well */
4187 s = win32_get_sitelib(PERL_FS_VERSION, &len);
4189 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4191 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_EXP), INCPUSH_CAN_RELOCATE);
4196 #if defined(SITELIB_STEM) && defined(PERL_INC_VERSION_LIST)
4197 /* Search for version-specific dirs below here */
4198 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_STEM), old_vers|INCPUSH_CAN_RELOCATE);
4202 #ifdef PERL_VENDORARCH_EXP
4203 /* vendorarch is always relative to vendorlib on Windows for
4204 * DLL-based path intuition to work correctly */
4205 # if !defined(WIN32)
4206 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORARCH_EXP), INCPUSH_CAN_RELOCATE);
4210 #ifdef PERL_VENDORLIB_EXP
4212 /* this picks up vendorarch as well */
4213 s = win32_get_vendorlib(PERL_FS_VERSION, &len);
4215 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4217 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_EXP), INCPUSH_CAN_RELOCATE);
4222 #if defined(PERL_VENDORLIB_STEM) && defined(PERL_INC_VERSION_LIST)
4223 /* Search for version-specific dirs below here */
4224 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_STEM), old_vers|INCPUSH_CAN_RELOCATE);
4229 S_incpush_use_sep(aTHX_ STR_WITH_LEN(ARCHLIB_EXP), INCPUSH_CAN_RELOCATE);
4233 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
4237 s = win32_get_privlib(PERL_FS_VERSION, &len);
4239 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4242 S_incpush_use_sep(aTHX_ PRIVLIB_EXP, 0, INCPUSH_CAN_RELOCATE);
4244 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PRIVLIB_EXP), INCPUSH_CAN_RELOCATE);
4249 #ifdef PERL_OTHERLIBDIRS
4251 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS), INCPUSH_ADD_SUB_DIRS
4252 |INCPUSH_CAN_RELOCATE);
4254 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS), old_vers|INCPUSH_CAN_RELOCATE);
4258 /* old_vers should be true, so that this last of all. */
4259 if (!PL_tainting && old_vers)
4260 S_incpush(aTHX_ STR_WITH_LEN("."), 0);
4261 #endif /* MACOS_TRADITIONAL */
4264 #if defined(DOSISH) || defined(EPOC) || defined(__SYMBIAN32__)
4265 # define PERLLIB_SEP ';'
4268 # define PERLLIB_SEP '|'
4270 # if defined(MACOS_TRADITIONAL)
4271 # define PERLLIB_SEP ','
4273 # define PERLLIB_SEP ':'
4277 #ifndef PERLLIB_MANGLE
4278 # define PERLLIB_MANGLE(s,n) (s)
4281 /* Push a directory onto @INC if it exists.
4282 Generate a new SV if we do this, to save needing to copy the SV we push
4285 S_incpush_if_exists(pTHX_ AV *const av, SV *dir)
4290 PERL_ARGS_ASSERT_INCPUSH_IF_EXISTS;
4292 if (PerlLIO_stat(SvPVX_const(dir), &tmpstatbuf) >= 0 &&
4293 S_ISDIR(tmpstatbuf.st_mode)) {
4301 S_incpush(pTHX_ const char *const dir, STRLEN len, U32 flags)
4304 const U8 addsubdirs = (U8)flags & INCPUSH_ADD_SUB_DIRS;
4305 const U8 addoldvers = (U8)flags & INCPUSH_ADD_OLD_VERS;
4306 const U8 canrelocate = (U8)flags & INCPUSH_CAN_RELOCATE;
4307 const U8 unshift = (U8)flags & INCPUSH_UNSHIFT;
4308 const U8 push_basedir = (flags & INCPUSH_NOT_BASEDIR) ? 0 : 1;
4315 inc = GvAVn(PL_incgv);
4317 if (addsubdirs || addoldvers) {
4323 /* Change 20189146be79a0596543441fa369c6bf7f85103f, to fix RT#6665,
4324 arranged to unshift #! line -I onto the front of @INC. However,
4325 -I can add version and architecture specific libraries, and they
4326 need to go first. The old code assumed that it was always
4327 pushing. Hence to make it work, need to push the architecture
4328 (etc) libraries onto a temporary array, then "unshift" that onto
4329 the front of @INC. */
4331 = (addsubdirs || addoldvers) ? (unshift ? newAV() : inc) : NULL;
4334 /* I am not convinced that this is valid when PERLLIB_MANGLE is
4335 defined to so something (in os2/os2.c), but the code has been
4336 this way, ignoring any possible changed of length, since
4337 760ac839baf413929cd31cc32ffd6dba6b781a81 (5.003_02) so I'll leave
4339 libdir = newSVpvn(PERLLIB_MANGLE(dir, len), len);
4341 libdir = newSVpv(PERLLIB_MANGLE(dir, 0), 0);
4344 #ifdef MACOS_TRADITIONAL
4345 if (!strchr(SvPVX(libdir), ':')) {
4348 sv_setpv(libdir, MacPerl_CanonDir(SvPVX(libdir), buf, 0));
4350 if (SvPVX(libdir)[SvCUR(libdir)-1] != ':')
4351 sv_catpvs(libdir, ":");
4354 /* Do the if() outside the #ifdef to avoid warnings about an unused
4357 #ifdef PERL_RELOCATABLE_INC
4359 * Relocatable include entries are marked with a leading .../
4362 * 0: Remove that leading ".../"
4363 * 1: Remove trailing executable name (anything after the last '/')
4364 * from the perl path to give a perl prefix
4366 * While the @INC element starts "../" and the prefix ends with a real
4367 * directory (ie not . or ..) chop that real directory off the prefix
4368 * and the leading "../" from the @INC element. ie a logical "../"
4370 * Finally concatenate the prefix and the remainder of the @INC element
4371 * The intent is that /usr/local/bin/perl and .../../lib/perl5
4372 * generates /usr/local/lib/perl5
4374 const char *libpath = SvPVX(libdir);
4375 STRLEN libpath_len = SvCUR(libdir);
4376 if (libpath_len >= 4 && memEQ (libpath, ".../", 4)) {
4378 SV * const caret_X = get_sv("\030", 0);
4379 /* Going to use the SV just as a scratch buffer holding a C
4385 /* $^X is *the* source of taint if tainting is on, hence
4386 SvPOK() won't be true. */
4388 assert(SvPOKp(caret_X));
4389 prefix_sv = newSVpvn_flags(SvPVX(caret_X), SvCUR(caret_X),
4391 /* Firstly take off the leading .../
4392 If all else fail we'll do the paths relative to the current
4394 sv_chop(libdir, libpath + 4);
4395 /* Don't use SvPV as we're intentionally bypassing taining,
4396 mortal copies that the mg_get of tainting creates, and
4397 corruption that seems to come via the save stack.
4398 I guess that the save stack isn't correctly set up yet. */
4399 libpath = SvPVX(libdir);
4400 libpath_len = SvCUR(libdir);
4402 /* This would work more efficiently with memrchr, but as it's
4403 only a GNU extension we'd need to probe for it and
4404 implement our own. Not hard, but maybe not worth it? */
4406 prefix = SvPVX(prefix_sv);
4407 lastslash = strrchr(prefix, '/');
4409 /* First time in with the *lastslash = '\0' we just wipe off
4410 the trailing /perl from (say) /usr/foo/bin/perl
4414 while ((*lastslash = '\0'), /* Do that, come what may. */
4415 (libpath_len >= 3 && memEQ(libpath, "../", 3)
4416 && (lastslash = strrchr(prefix, '/')))) {
4417 if (lastslash[1] == '\0'
4418 || (lastslash[1] == '.'
4419 && (lastslash[2] == '/' /* ends "/." */
4420 || (lastslash[2] == '/'
4421 && lastslash[3] == '/' /* or "/.." */
4423 /* Prefix ends "/" or "/." or "/..", any of which
4424 are fishy, so don't do any more logical cleanup.
4428 /* Remove leading "../" from path */
4431 /* Next iteration round the loop removes the last
4432 directory name from prefix by writing a '\0' in
4433 the while clause. */
4435 /* prefix has been terminated with a '\0' to the correct
4436 length. libpath points somewhere into the libdir SV.
4437 We need to join the 2 with '/' and drop the result into
4439 tempsv = Perl_newSVpvf(aTHX_ "%s/%s", prefix, libpath);
4440 SvREFCNT_dec(libdir);
4441 /* And this is the new libdir. */
4444 (PL_uid != PL_euid || PL_gid != PL_egid)) {
4445 /* Need to taint reloccated paths if running set ID */
4446 SvTAINTED_on(libdir);
4449 SvREFCNT_dec(prefix_sv);
4454 * BEFORE pushing libdir onto @INC we may first push version- and
4455 * archname-specific sub-directories.
4457 if (addsubdirs || addoldvers) {
4458 #ifdef PERL_INC_VERSION_LIST
4459 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
4460 const char * const incverlist[] = { PERL_INC_VERSION_LIST };
4461 const char * const *incver;
4467 if ((unix = tounixspec_ts(SvPV(libdir,len),NULL)) != NULL) {
4469 while (unix[len-1] == '/') len--; /* Cosmetic */
4470 sv_usepvn(libdir,unix,len);
4473 PerlIO_printf(Perl_error_log,
4474 "Failed to unixify @INC element \"%s\"\n",
4478 #ifdef MACOS_TRADITIONAL
4479 #define PERL_ARCH_FMT_PREFIX ""
4480 #define PERL_ARCH_FMT_SUFFIX ":"
4481 #define PERL_ARCH_FMT_PATH PERL_FS_VERSION ""
4483 #define PERL_ARCH_FMT_PREFIX "/"
4484 #define PERL_ARCH_FMT_SUFFIX ""
4485 #define PERL_ARCH_FMT_PATH "/" PERL_FS_VERSION
4487 /* .../version/archname if -d .../version/archname */
4488 sv_setsv(subdir, libdir);
4489 sv_catpvs(subdir, PERL_ARCH_FMT_PATH \
4490 PERL_ARCH_FMT_PREFIX ARCHNAME PERL_ARCH_FMT_SUFFIX);
4491 subdir = S_incpush_if_exists(aTHX_ av, subdir);
4493 /* .../version if -d .../version */
4494 sv_setsv(subdir, libdir);
4495 sv_catpvs(subdir, PERL_ARCH_FMT_PATH);
4496 subdir = S_incpush_if_exists(aTHX_ av, subdir);
4498 /* .../archname if -d .../archname */
4499 sv_setsv(subdir, libdir);
4501 PERL_ARCH_FMT_PREFIX ARCHNAME PERL_ARCH_FMT_SUFFIX);
4502 subdir = S_incpush_if_exists(aTHX_ av, subdir);
4506 #ifdef PERL_INC_VERSION_LIST
4508 for (incver = incverlist; *incver; incver++) {
4509 /* .../xxx if -d .../xxx */
4510 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PREFIX \
4511 "%s" PERL_ARCH_FMT_SUFFIX,
4512 SVfARG(libdir), *incver);
4513 subdir = S_incpush_if_exists(aTHX_ av, subdir);
4519 /* finally add this lib directory at the end of @INC */
4521 U32 extra = av_len(av) + 1;
4522 av_unshift(inc, extra + push_basedir);
4524 av_store(inc, extra, libdir);
4526 /* av owns a reference, av_store() expects to be donated a
4527 reference, and av expects to be sane when it's cleared.
4528 If I wanted to be naughty and wrong, I could peek inside the
4529 implementation of av_clear(), realise that it uses
4530 SvREFCNT_dec() too, so av's array could be a run of NULLs,
4531 and so directly steal from it (with a memcpy() to inc, and
4532 then memset() to NULL them out. But people copy code from the
4533 core expecting it to be best practise, so let's use the API.
4534 Although studious readers will note that I'm not checking any
4536 av_store(inc, extra, SvREFCNT_inc(*av_fetch(av, extra, FALSE)));
4540 else if (push_basedir) {
4541 av_push(inc, libdir);
4544 if (!push_basedir) {
4545 assert (SvREFCNT(libdir) == 1);
4546 SvREFCNT_dec(libdir);
4550 assert (SvREFCNT(subdir) == 1);
4551 SvREFCNT_dec(subdir);
4556 S_incpush_use_sep(pTHX_ const char *p, STRLEN len, U32 flags)
4560 /* This logic has been broken out from S_incpush(). It may be possible to
4563 PERL_ARGS_ASSERT_INCPUSH_USE_SEP;
4570 /* Break at all separators */
4571 while ((s = (const char*)memchr(p, PERLLIB_SEP, end - p))) {
4573 /* skip any consecutive separators */
4575 /* Uncomment the next line for PATH semantics */
4576 /* But you'll need to write tests */
4577 /* av_push(GvAVn(PL_incgv), newSVpvs(".")); */
4579 incpush(p, (STRLEN)(s - p), flags);
4584 incpush(p, (STRLEN)(end - p), flags);
4589 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
4593 volatile const line_t oldline = PL_curcop ? CopLINE(PL_curcop) : 0;
4599 PERL_ARGS_ASSERT_CALL_LIST;
4601 while (av_len(paramList) >= 0) {
4602 cv = MUTABLE_CV(av_shift(paramList));
4604 if (paramList == PL_beginav) {
4605 /* save PL_beginav for compiler */
4606 Perl_av_create_and_push(aTHX_ &PL_beginav_save, MUTABLE_SV(cv));
4608 else if (paramList == PL_checkav) {
4609 /* save PL_checkav for compiler */
4610 Perl_av_create_and_push(aTHX_ &PL_checkav_save, MUTABLE_SV(cv));
4612 else if (paramList == PL_unitcheckav) {
4613 /* save PL_unitcheckav for compiler */
4614 Perl_av_create_and_push(aTHX_ &PL_unitcheckav_save, MUTABLE_SV(cv));
4625 PL_madskills |= 16384;
4630 PL_madskills &= ~16384;
4633 (void)SvPV_const(atsv, len);
4635 PL_curcop = &PL_compiling;
4636 CopLINE_set(PL_curcop, oldline);
4637 if (paramList == PL_beginav)
4638 sv_catpvs(atsv, "BEGIN failed--compilation aborted");
4640 Perl_sv_catpvf(aTHX_ atsv,
4641 "%s failed--call queue aborted",
4642 paramList == PL_checkav ? "CHECK"
4643 : paramList == PL_initav ? "INIT"
4644 : paramList == PL_unitcheckav ? "UNITCHECK"
4646 while (PL_scopestack_ix > oldscope)
4649 Perl_croak(aTHX_ "%"SVf"", SVfARG(atsv));
4656 /* my_exit() was called */
4657 while (PL_scopestack_ix > oldscope)
4660 PL_curstash = PL_defstash;
4661 PL_curcop = &PL_compiling;
4662 CopLINE_set(PL_curcop, oldline);
4664 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
4665 if (paramList == PL_beginav)
4666 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
4668 Perl_croak(aTHX_ "%s failed--call queue aborted",
4669 paramList == PL_checkav ? "CHECK"
4670 : paramList == PL_initav ? "INIT"
4671 : paramList == PL_unitcheckav ? "UNITCHECK"
4678 PL_curcop = &PL_compiling;
4679 CopLINE_set(PL_curcop, oldline);
4682 PerlIO_printf(Perl_error_log, "panic: restartop\n");
4691 Perl_my_exit(pTHX_ U32 status)
4702 STATUS_EXIT_SET(status);
4709 Perl_my_failure_exit(pTHX)
4713 /* We have been called to fall on our sword. The desired exit code
4714 * should be already set in STATUS_UNIX, but could be shifted over
4715 * by 8 bits. STATUS_UNIX_EXIT_SET will handle the cases where a
4718 * If an error code has not been set, then force the issue.
4720 if (MY_POSIX_EXIT) {
4722 /* According to the die_exit.t tests, if errno is non-zero */
4723 /* It should be used for the error status. */
4725 if (errno == EVMSERR) {
4726 STATUS_NATIVE = vaxc$errno;
4729 /* According to die_exit.t tests, if the child_exit code is */
4730 /* also zero, then we need to exit with a code of 255 */
4731 if ((errno != 0) && (errno < 256))
4732 STATUS_UNIX_EXIT_SET(errno);
4733 else if (STATUS_UNIX < 255) {
4734 STATUS_UNIX_EXIT_SET(255);
4739 /* The exit code could have been set by $? or vmsish which
4740 * means that it may not have fatal set. So convert
4741 * success/warning codes to fatal with out changing
4742 * the POSIX status code. The severity makes VMS native
4743 * status handling work, while UNIX mode programs use the
4744 * the POSIX exit codes.
4746 if ((STATUS_NATIVE & (STS$K_SEVERE|STS$K_ERROR)) == 0) {
4747 STATUS_NATIVE &= STS$M_COND_ID;
4748 STATUS_NATIVE |= STS$K_ERROR | STS$M_INHIB_MSG;
4752 /* Traditionally Perl on VMS always expects a Fatal Error. */
4753 if (vaxc$errno & 1) {
4755 /* So force success status to failure */
4756 if (STATUS_NATIVE & 1)
4761 STATUS_UNIX = EINTR; /* In case something cares */
4766 STATUS_NATIVE = vaxc$errno; /* Should already be this */
4768 /* Encode the severity code */
4769 severity = STATUS_NATIVE & STS$M_SEVERITY;
4770 STATUS_UNIX = (severity ? severity : 1) << 8;
4772 /* Perl expects this to be a fatal error */
4773 if (severity != STS$K_SEVERE)
4782 STATUS_UNIX_SET(errno);
4784 exitstatus = STATUS_UNIX >> 8;
4785 if (exitstatus & 255)
4786 STATUS_UNIX_SET(exitstatus);
4788 STATUS_UNIX_SET(255);
4795 S_my_exit_jump(pTHX)
4800 SvREFCNT_dec(PL_e_script);
4804 POPSTACK_TO(PL_mainstack);
4812 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen)
4815 const char * const p = SvPVX_const(PL_e_script);
4816 const char *nl = strchr(p, '\n');
4818 PERL_UNUSED_ARG(idx);
4819 PERL_UNUSED_ARG(maxlen);
4821 nl = (nl) ? nl+1 : SvEND(PL_e_script);
4823 filter_del(read_e_script);
4826 sv_catpvn(buf_sv, p, nl-p);
4827 sv_chop(PL_e_script, nl);
4833 * c-indentation-style: bsd
4835 * indent-tabs-mode: t
4838 * ex: set ts=8 sts=4 sw=4 noet: