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 */
32 char *nw_get_sitelib(const char *pl);
35 /* XXX If this causes problems, set i_unistd=undef in the hint file. */
40 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
42 # include <sys/wait.h>
50 char control[CMSG_SPACE(sizeof(int))];
67 #if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
68 char *getenv (char *); /* Usually in <stdlib.h> */
71 static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
73 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
74 /* Drop everything. Heck, don't even try to call it */
75 # define validate_suid(validarg, scriptname, fdscript, suidscript, linestr_sv, rsfp) NOOP
77 /* Drop almost everything */
78 # define validate_suid(validarg, scriptname, fdscript, suidscript, linestr_sv, rsfp) S_validate_suid(aTHX_ rsfp)
81 #define CALL_BODY_EVAL(myop) \
82 if (PL_op == (myop)) \
83 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX); \
87 #define CALL_BODY_SUB(myop) \
88 if (PL_op == (myop)) \
89 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); \
93 #define CALL_LIST_BODY(cv) \
94 PUSHMARK(PL_stack_sp); \
95 call_sv(MUTABLE_SV((cv)), G_EVAL|G_DISCARD);
98 S_init_tls_and_interp(PerlInterpreter *my_perl)
102 PERL_SET_INTERP(my_perl);
103 #if defined(USE_ITHREADS)
106 PERL_SET_THX(my_perl);
109 MUTEX_INIT(&PL_dollarzero_mutex);
111 #ifdef PERL_IMPLICIT_CONTEXT
112 MUTEX_INIT(&PL_my_ctx_mutex);
115 #if defined(USE_ITHREADS)
118 /* This always happens for non-ithreads */
121 PERL_SET_THX(my_perl);
126 /* these implement the PERL_SYS_INIT, PERL_SYS_INIT3, PERL_SYS_TERM macros */
129 Perl_sys_init(int* argc, char*** argv)
133 PERL_ARGS_ASSERT_SYS_INIT;
135 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
136 PERL_UNUSED_ARG(argv);
137 PERL_SYS_INIT_BODY(argc, argv);
141 Perl_sys_init3(int* argc, char*** argv, char*** env)
145 PERL_ARGS_ASSERT_SYS_INIT3;
147 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
148 PERL_UNUSED_ARG(argv);
149 PERL_UNUSED_ARG(env);
150 PERL_SYS_INIT3_BODY(argc, argv, env);
157 if (!PL_veto_cleanup) {
158 PERL_SYS_TERM_BODY();
163 #ifdef PERL_IMPLICIT_SYS
165 perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
166 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
167 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
168 struct IPerlDir* ipD, struct IPerlSock* ipS,
169 struct IPerlProc* ipP)
171 PerlInterpreter *my_perl;
173 PERL_ARGS_ASSERT_PERL_ALLOC_USING;
175 /* Newx() needs interpreter, so call malloc() instead */
176 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
177 S_init_tls_and_interp(my_perl);
178 Zero(my_perl, 1, PerlInterpreter);
188 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
195 =head1 Embedding Functions
197 =for apidoc perl_alloc
199 Allocates a new Perl interpreter. See L<perlembed>.
207 PerlInterpreter *my_perl;
209 /* Newx() needs interpreter, so call malloc() instead */
210 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
212 S_init_tls_and_interp(my_perl);
213 #ifndef PERL_TRACK_MEMPOOL
214 return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter);
216 Zero(my_perl, 1, PerlInterpreter);
217 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
221 #endif /* PERL_IMPLICIT_SYS */
224 =for apidoc perl_construct
226 Initializes a new Perl interpreter. See L<perlembed>.
232 perl_construct(pTHXx)
236 PERL_ARGS_ASSERT_PERL_CONSTRUCT;
240 PL_perl_destruct_level = 1;
242 PERL_UNUSED_ARG(my_perl);
243 if (PL_perl_destruct_level > 0)
246 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
248 /* set read-only and try to insure than we wont see REFCNT==0
251 SvREADONLY_on(&PL_sv_undef);
252 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
254 sv_setpv(&PL_sv_no,PL_No);
255 /* value lookup in void context - happens to have the side effect
256 of caching the numeric forms. However, as &PL_sv_no doesn't contain
257 a string that is a valid numer, we have to turn the public flags by
263 SvREADONLY_on(&PL_sv_no);
264 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
266 sv_setpv(&PL_sv_yes,PL_Yes);
269 SvREADONLY_on(&PL_sv_yes);
270 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
272 SvREADONLY_on(&PL_sv_placeholder);
273 SvREFCNT(&PL_sv_placeholder) = (~(U32)0)/2;
275 PL_sighandlerp = (Sighandler_t) Perl_sighandler;
276 #ifdef PERL_USES_PL_PIDSTATUS
277 PL_pidstatus = newHV();
280 PL_rs = newSVpvs("\n");
290 SET_NUMERIC_STANDARD();
292 #if defined(LOCAL_PATCH_COUNT)
293 PL_localpatches = local_patches; /* For possible -v */
296 #ifdef HAVE_INTERP_INTERN
300 PerlIO_init(aTHX); /* Hook to IO system */
302 PL_fdpid = newAV(); /* for remembering popen pids by fd */
303 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
304 PL_errors = newSVpvs("");
305 sv_setpvs(PERL_DEBUG_PAD(0), ""); /* For regex debugging. */
306 sv_setpvs(PERL_DEBUG_PAD(1), ""); /* ext/re needs these */
307 sv_setpvs(PERL_DEBUG_PAD(2), ""); /* even without DEBUGGING. */
309 /* First entry is a list of empty elements. It needs to be initialised
310 else all hell breaks loose in S_find_uninit_var(). */
311 Perl_av_create_and_push(aTHX_ &PL_regex_padav, newSVpvs(""));
312 PL_regex_pad = AvARRAY(PL_regex_padav);
314 #ifdef USE_REENTRANT_API
315 Perl_reentrant_init(aTHX);
318 /* Note that strtab is a rather special HV. Assumptions are made
319 about not iterating on it, and not adding tie magic to it.
320 It is properly deallocated in perl_destruct() */
323 HvSHAREKEYS_off(PL_strtab); /* mandatory */
324 hv_ksplit(PL_strtab, 512);
326 #if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
327 _dyld_lookup_and_bind
328 ("__environ", (unsigned long *) &environ_pointer, NULL);
332 # ifdef USE_ENVIRON_ARRAY
333 PL_origenviron = environ;
337 /* Use sysconf(_SC_CLK_TCK) if available, if not
338 * available or if the sysconf() fails, use the HZ.
339 * BeOS has those, but returns the wrong value.
340 * The HZ if not originally defined has been by now
341 * been defined as CLK_TCK, if available. */
342 #if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK) && !defined(__BEOS__)
343 PL_clocktick = sysconf(_SC_CLK_TCK);
344 if (PL_clocktick <= 0)
348 PL_stashcache = newHV();
350 PL_patchlevel = Perl_newSVpvf(aTHX_ "v%d.%d.%d", (int)PERL_REVISION,
351 (int)PERL_VERSION, (int)PERL_SUBVERSION);
354 if (!PL_mmap_page_size) {
355 #if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
357 SETERRNO(0, SS_NORMAL);
359 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
361 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
363 if ((long) PL_mmap_page_size < 0) {
365 SV * const error = ERRSV;
366 SvUPGRADE(error, SVt_PV);
367 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
370 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
374 # ifdef HAS_GETPAGESIZE
375 PL_mmap_page_size = getpagesize();
377 # if defined(I_SYS_PARAM) && defined(PAGESIZE)
378 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
382 if (PL_mmap_page_size <= 0)
383 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
384 (IV) PL_mmap_page_size);
386 #endif /* HAS_MMAP */
388 #if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
389 PL_timesbase.tms_utime = 0;
390 PL_timesbase.tms_stime = 0;
391 PL_timesbase.tms_cutime = 0;
392 PL_timesbase.tms_cstime = 0;
395 PL_registered_mros = newHV();
396 /* Start with 1 bucket, for DFS. It's unlikely we'll need more. */
397 HvMAX(PL_registered_mros) = 0;
403 =for apidoc nothreadhook
405 Stub that provides thread hook for perl_destruct when there are
412 Perl_nothreadhook(pTHX)
418 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
420 Perl_dump_sv_child(pTHX_ SV *sv)
423 const int sock = PL_dumper_fd;
424 const int debug_fd = PerlIO_fileno(Perl_debug_log);
425 union control_un control;
428 struct cmsghdr *cmptr;
430 unsigned char buffer[256];
432 PERL_ARGS_ASSERT_DUMP_SV_CHILD;
434 if(sock == -1 || debug_fd == -1)
437 PerlIO_flush(Perl_debug_log);
439 /* All these shenanigans are to pass a file descriptor over to our child for
440 it to dump out to. We can't let it hold open the file descriptor when it
441 forks, as the file descriptor it will dump to can turn out to be one end
442 of pipe that some other process will wait on for EOF. (So as it would
443 be open, the wait would be forever.) */
445 msg.msg_control = control.control;
446 msg.msg_controllen = sizeof(control.control);
447 /* We're a connected socket so we don't need a destination */
453 cmptr = CMSG_FIRSTHDR(&msg);
454 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
455 cmptr->cmsg_level = SOL_SOCKET;
456 cmptr->cmsg_type = SCM_RIGHTS;
457 *((int *)CMSG_DATA(cmptr)) = 1;
459 vec[0].iov_base = (void*)&sv;
460 vec[0].iov_len = sizeof(sv);
461 got = sendmsg(sock, &msg, 0);
464 perror("Debug leaking scalars parent sendmsg failed");
467 if(got < sizeof(sv)) {
468 perror("Debug leaking scalars parent short sendmsg");
472 /* Return protocol is
474 unsigned char: length of location string (0 for empty)
475 unsigned char*: string (not terminated)
477 vec[0].iov_base = (void*)&returned_errno;
478 vec[0].iov_len = sizeof(returned_errno);
479 vec[1].iov_base = buffer;
482 got = readv(sock, vec, 2);
485 perror("Debug leaking scalars parent read failed");
486 PerlIO_flush(PerlIO_stderr());
489 if(got < sizeof(returned_errno) + 1) {
490 perror("Debug leaking scalars parent short read");
491 PerlIO_flush(PerlIO_stderr());
496 got = read(sock, buffer + 1, *buffer);
498 perror("Debug leaking scalars parent read 2 failed");
499 PerlIO_flush(PerlIO_stderr());
504 perror("Debug leaking scalars parent short read 2");
505 PerlIO_flush(PerlIO_stderr());
510 if (returned_errno || *buffer) {
511 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
512 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
513 returned_errno, strerror(returned_errno));
519 =for apidoc perl_destruct
521 Shuts down a Perl interpreter. See L<perlembed>.
530 VOL signed char destruct_level; /* see possible values in intrpvar.h */
532 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
536 PERL_ARGS_ASSERT_PERL_DESTRUCT;
538 PERL_UNUSED_ARG(my_perl);
541 /* wait for all pseudo-forked children to finish */
542 PERL_WAIT_FOR_CHILDREN;
544 destruct_level = PL_perl_destruct_level;
547 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
549 const int i = atoi(s);
550 if (destruct_level < i)
556 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
562 if (PL_endav && !PL_minus_c)
563 call_list(PL_scopestack_ix, PL_endav);
569 /* Need to flush since END blocks can produce output */
572 if (CALL_FPTR(PL_threadhook)(aTHX)) {
573 /* Threads hook has vetoed further cleanup */
574 PL_veto_cleanup = TRUE;
578 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
579 if (destruct_level != 0) {
580 /* Fork here to create a child. Our child's job is to preserve the
581 state of scalars prior to destruction, so that we can instruct it
582 to dump any scalars that we later find have leaked.
583 There's no subtlety in this code - it assumes POSIX, and it doesn't
587 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
588 perror("Debug leaking scalars socketpair failed");
594 perror("Debug leaking scalars fork failed");
598 /* We are the child */
599 const int sock = fd[1];
600 const int debug_fd = PerlIO_fileno(Perl_debug_log);
603 /* Our success message is an integer 0, and a char 0 */
604 static const char success[sizeof(int) + 1] = {0};
608 /* We need to close all other file descriptors otherwise we end up
609 with interesting hangs, where the parent closes its end of a
610 pipe, and sits waiting for (another) child to terminate. Only
611 that child never terminates, because it never gets EOF, because
612 we also have the far end of the pipe open. We even need to
613 close the debugging fd, because sometimes it happens to be one
614 end of a pipe, and a process is waiting on the other end for
615 EOF. Normally it would be closed at some point earlier in
616 destruction, but if we happen to cause the pipe to remain open,
617 EOF never occurs, and we get an infinite hang. Hence all the
618 games to pass in a file descriptor if it's actually needed. */
620 f = sysconf(_SC_OPEN_MAX);
622 where = "sysconf failed";
633 union control_un control;
636 struct cmsghdr *cmptr;
640 msg.msg_control = control.control;
641 msg.msg_controllen = sizeof(control.control);
642 /* We're a connected socket so we don't need a source */
646 msg.msg_iovlen = sizeof(vec)/sizeof(vec[0]);
648 vec[0].iov_base = (void*)⌖
649 vec[0].iov_len = sizeof(target);
651 got = recvmsg(sock, &msg, 0);
656 where = "recv failed";
659 if(got < sizeof(target)) {
660 where = "short recv";
664 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
668 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
669 where = "wrong cmsg_len";
672 if(cmptr->cmsg_level != SOL_SOCKET) {
673 where = "wrong cmsg_level";
676 if(cmptr->cmsg_type != SCM_RIGHTS) {
677 where = "wrong cmsg_type";
681 got_fd = *(int*)CMSG_DATA(cmptr);
682 /* For our last little bit of trickery, put the file descriptor
683 back into Perl_debug_log, as if we never actually closed it
685 if(got_fd != debug_fd) {
686 if (dup2(got_fd, debug_fd) == -1) {
693 PerlIO_flush(Perl_debug_log);
695 got = write(sock, &success, sizeof(success));
698 where = "write failed";
701 if(got < sizeof(success)) {
702 where = "short write";
709 int send_errno = errno;
710 unsigned char length = (unsigned char) strlen(where);
711 struct iovec failure[3] = {
712 {(void*)&send_errno, sizeof(send_errno)},
714 {(void*)where, length}
716 int got = writev(sock, failure, 3);
717 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
718 in the parent if we try to read from the socketpair after the
719 child has exited, even if there was data to read.
720 So sleep a bit to give the parent a fighting chance of
723 _exit((got == -1) ? errno : 0);
727 PL_dumper_fd = fd[0];
732 /* We must account for everything. */
734 /* Destroy the main CV and syntax tree */
735 /* Do this now, because destroying ops can cause new SVs to be generated
736 in Perl_pad_swipe, and when running with -DDEBUG_LEAKING_SCALARS they
737 PL_curcop to point to a valid op from which the filename structure
739 PL_curcop = &PL_compiling;
741 /* ensure comppad/curpad to refer to main's pad */
742 if (CvPADLIST(PL_main_cv)) {
743 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
745 op_free(PL_main_root);
748 PL_main_start = NULL;
749 SvREFCNT_dec(PL_main_cv);
753 /* Tell PerlIO we are about to tear things apart in case
754 we have layers which are using resources that should
758 PerlIO_destruct(aTHX);
760 if (PL_sv_objcount) {
762 * Try to destruct global references. We do this first so that the
763 * destructors and destructees still exist. Some sv's might remain.
764 * Non-referenced objects are on their own.
768 if (PL_defoutgv && !SvREFCNT(PL_defoutgv))
769 PL_defoutgv = NULL; /* may have been freed */
772 /* unhook hooks which will soon be, or use, destroyed data */
773 SvREFCNT_dec(PL_warnhook);
775 SvREFCNT_dec(PL_diehook);
778 /* call exit list functions */
779 while (PL_exitlistlen-- > 0)
780 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
782 Safefree(PL_exitlist);
787 SvREFCNT_dec(PL_registered_mros);
789 /* jettison our possibly duplicated environment */
790 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
791 * so we certainly shouldn't free it here
794 #if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
795 if (environ != PL_origenviron && !PL_use_safe_putenv
797 /* only main thread can free environ[0] contents */
798 && PL_curinterp == aTHX
804 for (i = 0; environ[i]; i++)
805 safesysfree(environ[i]);
807 /* Must use safesysfree() when working with environ. */
808 safesysfree(environ);
810 environ = PL_origenviron;
813 #endif /* !PERL_MICRO */
815 if (destruct_level == 0) {
817 DEBUG_P(debprofdump());
819 #if defined(PERLIO_LAYERS)
820 /* No more IO - including error messages ! */
821 PerlIO_cleanup(aTHX);
824 CopFILE_free(&PL_compiling);
825 CopSTASH_free(&PL_compiling);
827 /* The exit() function will do everything that needs doing. */
831 /* reset so print() ends up where we expect */
835 /* the syntax tree is shared between clones
836 * so op_free(PL_main_root) only ReREFCNT_dec's
837 * REGEXPs in the parent interpreter
838 * we need to manually ReREFCNT_dec for the clones
840 SvREFCNT_dec(PL_regex_padav);
841 PL_regex_padav = NULL;
845 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
846 PL_stashcache = NULL;
848 /* loosen bonds of global variables */
850 /* XXX can PL_parser still be non-null here? */
851 if(PL_parser && PL_parser->rsfp) {
852 (void)PerlIO_close(PL_parser->rsfp);
853 PL_parser->rsfp = NULL;
857 Safefree(PL_splitstr);
867 PL_doswitches = FALSE;
868 PL_dowarn = G_WARN_OFF;
869 PL_doextract = FALSE;
870 PL_sawampersand = FALSE; /* must save all match strings */
873 Safefree(PL_inplace);
875 SvREFCNT_dec(PL_patchlevel);
878 SvREFCNT_dec(PL_e_script);
884 /* magical thingies */
886 SvREFCNT_dec(PL_ofsgv); /* *, */
889 SvREFCNT_dec(PL_ors_sv); /* $\ */
892 SvREFCNT_dec(PL_rs); /* $/ */
895 Safefree(PL_osname); /* $^O */
898 SvREFCNT_dec(PL_statname);
902 /* defgv, aka *_ should be taken care of elsewhere */
904 /* clean up after study() */
905 SvREFCNT_dec(PL_lastscream);
906 PL_lastscream = NULL;
907 Safefree(PL_screamfirst);
909 Safefree(PL_screamnext);
913 Safefree(PL_efloatbuf);
917 /* startup and shutdown function lists */
918 SvREFCNT_dec(PL_beginav);
919 SvREFCNT_dec(PL_beginav_save);
920 SvREFCNT_dec(PL_endav);
921 SvREFCNT_dec(PL_checkav);
922 SvREFCNT_dec(PL_checkav_save);
923 SvREFCNT_dec(PL_unitcheckav);
924 SvREFCNT_dec(PL_unitcheckav_save);
925 SvREFCNT_dec(PL_initav);
927 PL_beginav_save = NULL;
930 PL_checkav_save = NULL;
931 PL_unitcheckav = NULL;
932 PL_unitcheckav_save = NULL;
935 /* shortcuts just get cleared */
944 PL_last_in_gv = NULL;
956 SvREFCNT_dec(PL_argvout_stack);
957 PL_argvout_stack = NULL;
959 SvREFCNT_dec(PL_modglobal);
961 SvREFCNT_dec(PL_preambleav);
962 PL_preambleav = NULL;
963 SvREFCNT_dec(PL_subname);
965 #ifdef PERL_USES_PL_PIDSTATUS
966 SvREFCNT_dec(PL_pidstatus);
969 SvREFCNT_dec(PL_toptarget);
971 SvREFCNT_dec(PL_bodytarget);
972 PL_bodytarget = NULL;
973 PL_formtarget = NULL;
975 /* free locale stuff */
976 #ifdef USE_LOCALE_COLLATE
977 Safefree(PL_collation_name);
978 PL_collation_name = NULL;
981 #ifdef USE_LOCALE_NUMERIC
982 Safefree(PL_numeric_name);
983 PL_numeric_name = NULL;
984 SvREFCNT_dec(PL_numeric_radix_sv);
985 PL_numeric_radix_sv = NULL;
988 /* clear utf8 character classes */
989 SvREFCNT_dec(PL_utf8_alnum);
990 SvREFCNT_dec(PL_utf8_alnumc);
991 SvREFCNT_dec(PL_utf8_ascii);
992 SvREFCNT_dec(PL_utf8_alpha);
993 SvREFCNT_dec(PL_utf8_space);
994 SvREFCNT_dec(PL_utf8_cntrl);
995 SvREFCNT_dec(PL_utf8_graph);
996 SvREFCNT_dec(PL_utf8_digit);
997 SvREFCNT_dec(PL_utf8_upper);
998 SvREFCNT_dec(PL_utf8_lower);
999 SvREFCNT_dec(PL_utf8_print);
1000 SvREFCNT_dec(PL_utf8_punct);
1001 SvREFCNT_dec(PL_utf8_xdigit);
1002 SvREFCNT_dec(PL_utf8_mark);
1003 SvREFCNT_dec(PL_utf8_toupper);
1004 SvREFCNT_dec(PL_utf8_totitle);
1005 SvREFCNT_dec(PL_utf8_tolower);
1006 SvREFCNT_dec(PL_utf8_tofold);
1007 SvREFCNT_dec(PL_utf8_idstart);
1008 SvREFCNT_dec(PL_utf8_idcont);
1009 PL_utf8_alnum = NULL;
1010 PL_utf8_alnumc = NULL;
1011 PL_utf8_ascii = NULL;
1012 PL_utf8_alpha = NULL;
1013 PL_utf8_space = NULL;
1014 PL_utf8_cntrl = NULL;
1015 PL_utf8_graph = NULL;
1016 PL_utf8_digit = NULL;
1017 PL_utf8_upper = NULL;
1018 PL_utf8_lower = NULL;
1019 PL_utf8_print = NULL;
1020 PL_utf8_punct = NULL;
1021 PL_utf8_xdigit = NULL;
1022 PL_utf8_mark = NULL;
1023 PL_utf8_toupper = NULL;
1024 PL_utf8_totitle = NULL;
1025 PL_utf8_tolower = NULL;
1026 PL_utf8_tofold = NULL;
1027 PL_utf8_idstart = NULL;
1028 PL_utf8_idcont = NULL;
1030 if (!specialWARN(PL_compiling.cop_warnings))
1031 PerlMemShared_free(PL_compiling.cop_warnings);
1032 PL_compiling.cop_warnings = NULL;
1033 Perl_refcounted_he_free(aTHX_ PL_compiling.cop_hints_hash);
1034 PL_compiling.cop_hints_hash = NULL;
1035 CopFILE_free(&PL_compiling);
1036 CopSTASH_free(&PL_compiling);
1038 /* Prepare to destruct main symbol table. */
1043 SvREFCNT_dec(PL_curstname);
1044 PL_curstname = NULL;
1046 /* clear queued errors */
1047 SvREFCNT_dec(PL_errors);
1050 SvREFCNT_dec(PL_isarev);
1053 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
1054 if (PL_scopestack_ix != 0)
1055 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
1056 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1057 (long)PL_scopestack_ix);
1058 if (PL_savestack_ix != 0)
1059 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
1060 "Unbalanced saves: %ld more saves than restores\n",
1061 (long)PL_savestack_ix);
1062 if (PL_tmps_floor != -1)
1063 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1064 (long)PL_tmps_floor + 1);
1065 if (cxstack_ix != -1)
1066 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1067 (long)cxstack_ix + 1);
1070 /* Now absolutely destruct everything, somehow or other, loops or no. */
1072 /* the 2 is for PL_fdpid and PL_strtab */
1073 while (sv_clean_all() > 2)
1076 AvREAL_off(PL_fdpid); /* no surviving entries */
1077 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
1080 #ifdef HAVE_INTERP_INTERN
1084 /* Destruct the global string table. */
1086 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1087 * so that sv_free() won't fail on them.
1088 * Now that the global string table is using a single hunk of memory
1089 * for both HE and HEK, we either need to explicitly unshare it the
1090 * correct way, or actually free things here.
1093 const I32 max = HvMAX(PL_strtab);
1094 HE * const * const array = HvARRAY(PL_strtab);
1095 HE *hent = array[0];
1098 if (hent && ckWARN_d(WARN_INTERNAL)) {
1099 HE * const next = HeNEXT(hent);
1100 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
1101 "Unbalanced string table refcount: (%ld) for \"%s\"",
1102 (long)hent->he_valu.hent_refcount, HeKEY(hent));
1109 hent = array[riter];
1114 HvARRAY(PL_strtab) = 0;
1115 HvTOTALKEYS(PL_strtab) = 0;
1116 HvFILL(PL_strtab) = 0;
1118 SvREFCNT_dec(PL_strtab);
1121 /* free the pointer tables used for cloning */
1122 ptr_table_free(PL_ptr_table);
1123 PL_ptr_table = (PTR_TBL_t*)NULL;
1126 /* free special SVs */
1128 SvREFCNT(&PL_sv_yes) = 0;
1129 sv_clear(&PL_sv_yes);
1130 SvANY(&PL_sv_yes) = NULL;
1131 SvFLAGS(&PL_sv_yes) = 0;
1133 SvREFCNT(&PL_sv_no) = 0;
1134 sv_clear(&PL_sv_no);
1135 SvANY(&PL_sv_no) = NULL;
1136 SvFLAGS(&PL_sv_no) = 0;
1140 for (i=0; i<=2; i++) {
1141 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1142 sv_clear(PERL_DEBUG_PAD(i));
1143 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1144 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1148 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
1149 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
1151 #ifdef DEBUG_LEAKING_SCALARS
1152 if (PL_sv_count != 0) {
1157 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
1158 svend = &sva[SvREFCNT(sva)];
1159 for (sv = sva + 1; sv < svend; ++sv) {
1160 if (SvTYPE(sv) != SVTYPEMASK) {
1161 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
1163 " refcnt=%"UVuf pTHX__FORMAT "\n"
1164 "\tallocated at %s:%d %s %s%s\n",
1165 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1167 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1169 sv->sv_debug_inpad ? "for" : "by",
1170 sv->sv_debug_optype ?
1171 PL_op_name[sv->sv_debug_optype]: "(none)",
1172 sv->sv_debug_cloned ? " (cloned)" : ""
1174 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1175 Perl_dump_sv_child(aTHX_ sv);
1181 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1185 /* Wait for up to 4 seconds for child to terminate.
1186 This seems to be the least effort way of timing out on reaping
1188 struct timeval waitfor = {4, 0};
1189 int sock = PL_dumper_fd;
1193 FD_SET(sock, &rset);
1194 select(sock + 1, &rset, NULL, NULL, &waitfor);
1195 waitpid(child, &status, WNOHANG);
1200 #ifdef DEBUG_LEAKING_SCALARS_ABORT
1206 #ifdef PERL_DEBUG_READONLY_OPS
1212 #if defined(PERLIO_LAYERS)
1213 /* No more IO - including error messages ! */
1214 PerlIO_cleanup(aTHX);
1217 /* sv_undef needs to stay immortal until after PerlIO_cleanup
1218 as currently layers use it rather than NULL as a marker
1219 for no arg - and will try and SvREFCNT_dec it.
1221 SvREFCNT(&PL_sv_undef) = 0;
1222 SvREADONLY_off(&PL_sv_undef);
1224 Safefree(PL_origfilename);
1225 PL_origfilename = NULL;
1226 Safefree(PL_reg_start_tmp);
1227 PL_reg_start_tmp = (char**)NULL;
1228 PL_reg_start_tmpl = 0;
1229 Safefree(PL_reg_curpm);
1230 Safefree(PL_reg_poscache);
1231 free_tied_hv_pool();
1232 Safefree(PL_op_mask);
1233 Safefree(PL_psig_ptr);
1234 PL_psig_ptr = (SV**)NULL;
1235 Safefree(PL_psig_name);
1236 PL_psig_name = (SV**)NULL;
1237 Safefree(PL_bitcount);
1239 Safefree(PL_psig_pend);
1240 PL_psig_pend = (int*)NULL;
1243 PL_tainting = FALSE;
1244 PL_taint_warn = FALSE;
1245 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
1248 DEBUG_P(debprofdump());
1250 #ifdef USE_REENTRANT_API
1251 Perl_reentrant_free(aTHX);
1256 while (PL_regmatch_slab) {
1257 regmatch_slab *s = PL_regmatch_slab;
1258 PL_regmatch_slab = PL_regmatch_slab->next;
1262 /* As the absolutely last thing, free the non-arena SV for mess() */
1265 /* we know that type == SVt_PVMG */
1267 /* it could have accumulated taint magic */
1270 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1271 moremagic = mg->mg_moremagic;
1272 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1274 Safefree(mg->mg_ptr);
1278 /* we know that type >= SVt_PV */
1279 SvPV_free(PL_mess_sv);
1280 Safefree(SvANY(PL_mess_sv));
1281 Safefree(PL_mess_sv);
1288 =for apidoc perl_free
1290 Releases a Perl interpreter. See L<perlembed>.
1300 PERL_ARGS_ASSERT_PERL_FREE;
1302 if (PL_veto_cleanup)
1305 #ifdef PERL_TRACK_MEMPOOL
1308 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1309 * value as we're probably hunting memory leaks then
1311 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
1312 if (!s || atoi(s) == 0) {
1313 const U32 old_debug = PL_debug;
1314 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1315 thread at thread exit. */
1317 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1318 "free this thread's memory\n");
1319 PL_debug &= ~ DEBUG_m_FLAG;
1321 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
1322 safesysfree(sTHX + (char *)(aTHXx->Imemory_debug_header.next));
1323 PL_debug = old_debug;
1328 #if defined(WIN32) || defined(NETWARE)
1329 # if defined(PERL_IMPLICIT_SYS)
1332 void *host = nw_internal_host;
1334 void *host = w32_internal_host;
1336 PerlMem_free(aTHXx);
1338 nw_delete_internal_host(host);
1340 win32_delete_internal_host(host);
1344 PerlMem_free(aTHXx);
1347 PerlMem_free(aTHXx);
1351 #if defined(USE_ITHREADS)
1352 /* provide destructors to clean up the thread key when libperl is unloaded */
1353 #ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1355 #if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
1356 #pragma fini "perl_fini"
1357 #elif defined(__sun) && !defined(__GNUC__)
1358 #pragma fini (perl_fini)
1362 #if defined(__GNUC__)
1363 __attribute__((destructor))
1368 if (PL_curinterp && !PL_veto_cleanup)
1373 #endif /* THREADS */
1376 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
1379 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1380 PL_exitlist[PL_exitlistlen].fn = fn;
1381 PL_exitlist[PL_exitlistlen].ptr = ptr;
1385 #ifdef HAS_PROCSELFEXE
1386 /* This is a function so that we don't hold on to MAXPATHLEN
1387 bytes of stack longer than necessary
1390 S_procself_val(pTHX_ SV *sv, const char *arg0)
1392 char buf[MAXPATHLEN];
1393 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1395 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1396 includes a spurious NUL which will cause $^X to fail in system
1397 or backticks (this will prevent extensions from being built and
1398 many tests from working). readlink is not meant to add a NUL.
1399 Normal readlink works fine.
1401 if (len > 0 && buf[len-1] == '\0') {
1405 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1406 returning the text "unknown" from the readlink rather than the path
1407 to the executable (or returning an error from the readlink). Any valid
1408 path has a '/' in it somewhere, so use that to validate the result.
1409 See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1411 if (len > 0 && memchr(buf, '/', len)) {
1412 sv_setpvn(sv,buf,len);
1418 #endif /* HAS_PROCSELFEXE */
1421 S_set_caret_X(pTHX) {
1423 GV* tmpgv = gv_fetchpvs("\030", GV_ADD|GV_NOTQUAL, SVt_PV); /* $^X */
1425 #ifdef HAS_PROCSELFEXE
1426 S_procself_val(aTHX_ GvSV(tmpgv), PL_origargv[0]);
1429 sv_setpv(GvSVn(tmpgv), os2_execname(aTHX));
1431 sv_setpv(GvSVn(tmpgv),PL_origargv[0]);
1438 =for apidoc perl_parse
1440 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1446 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
1453 PERL_ARGS_ASSERT_PERL_PARSE;
1454 #ifndef MULTIPLICITY
1455 PERL_UNUSED_ARG(my_perl);
1458 #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
1459 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
1460 * This MUST be done before any hash stores or fetches take place.
1461 * If you set PL_rehash_seed (and assumedly also PL_rehash_seed_set)
1462 * yourself, it is your responsibility to provide a good random seed!
1463 * You can also define PERL_HASH_SEED in compile time, see hv.h. */
1464 if (!PL_rehash_seed_set)
1465 PL_rehash_seed = get_hash_seed();
1467 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
1469 if (s && (atoi(s) == 1))
1470 PerlIO_printf(Perl_debug_log, "HASH_SEED = %"UVuf"\n", PL_rehash_seed);
1472 #endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1477 if (PL_origalen != 0) {
1478 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1481 /* Set PL_origalen be the sum of the contiguous argv[]
1482 * elements plus the size of the env in case that it is
1483 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
1484 * as the maximum modifiable length of $0. In the worst case
1485 * the area we are able to modify is limited to the size of
1486 * the original argv[0]. (See below for 'contiguous', though.)
1488 const char *s = NULL;
1491 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
1492 /* Do the mask check only if the args seem like aligned. */
1494 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1496 /* See if all the arguments are contiguous in memory. Note
1497 * that 'contiguous' is a loose term because some platforms
1498 * align the argv[] and the envp[]. If the arguments look
1499 * like non-aligned, assume that they are 'strictly' or
1500 * 'traditionally' contiguous. If the arguments look like
1501 * aligned, we just check that they are within aligned
1502 * PTRSIZE bytes. As long as no system has something bizarre
1503 * like the argv[] interleaved with some other data, we are
1504 * fine. (Did I just evoke Murphy's Law?) --jhi */
1505 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1507 for (i = 1; i < PL_origargc; i++) {
1508 if ((PL_origargv[i] == s + 1
1510 || PL_origargv[i] == s + 2
1515 (PL_origargv[i] > s &&
1517 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1528 #ifndef PERL_USE_SAFE_PUTENV
1529 /* Can we grab env area too to be used as the area for $0? */
1530 if (s && PL_origenviron && !PL_use_safe_putenv) {
1531 if ((PL_origenviron[0] == s + 1)
1534 (PL_origenviron[0] > s &&
1535 PL_origenviron[0] <=
1536 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1539 #ifndef OS2 /* ENVIRON is read by the kernel too. */
1540 s = PL_origenviron[0];
1543 my_setenv("NoNe SuCh", NULL);
1544 /* Force copy of environment. */
1545 for (i = 1; PL_origenviron[i]; i++) {
1546 if (PL_origenviron[i] == s + 1
1549 (PL_origenviron[i] > s &&
1550 PL_origenviron[i] <=
1551 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1554 s = PL_origenviron[i];
1562 #endif /* !defined(PERL_USE_SAFE_PUTENV) */
1564 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
1569 /* Come here if running an undumped a.out. */
1571 PL_origfilename = savepv(argv[0]);
1572 PL_do_undump = FALSE;
1573 cxstack_ix = -1; /* start label stack again */
1575 assert (!PL_tainted);
1577 S_set_caret_X(aTHX);
1579 init_postdump_symbols(argc,argv,env);
1584 op_free(PL_main_root);
1585 PL_main_root = NULL;
1587 PL_main_start = NULL;
1588 SvREFCNT_dec(PL_main_cv);
1592 oldscope = PL_scopestack_ix;
1593 PL_dowarn = G_WARN_OFF;
1598 parse_body(env,xsinit);
1600 call_list(oldscope, PL_unitcheckav);
1602 call_list(oldscope, PL_checkav);
1609 /* my_exit() was called */
1610 while (PL_scopestack_ix > oldscope)
1613 PL_curstash = PL_defstash;
1615 call_list(oldscope, PL_unitcheckav);
1617 call_list(oldscope, PL_checkav);
1621 PerlIO_printf(Perl_error_log, "panic: top_env\n");
1629 #define INCPUSH_ADD_SUB_DIRS 0x01
1630 #define INCPUSH_ADD_OLD_VERS 0x02
1631 #define INCPUSH_USE_SEP 0x04
1632 #define INCPUSH_CAN_RELOCATE 0x08
1633 #define INCPUSH_UNSHIFT 0x10
1636 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
1640 int argc = PL_origargc;
1641 char **argv = PL_origargv;
1642 const char *scriptname = NULL;
1643 VOL bool dosearch = FALSE;
1646 const char *cddir = NULL;
1647 #ifdef USE_SITECUSTOMIZE
1648 bool minus_f = FALSE;
1650 SV *linestr_sv = newSV_type(SVt_PVIV);
1651 bool add_read_e_script = FALSE;
1653 SvGROW(linestr_sv, 80);
1654 sv_setpvs(linestr_sv,"");
1656 sv = newSVpvs(""); /* first used for -I flags */
1662 for (argc--,argv++; argc > 0; argc--,argv++) {
1663 if (argv[0][0] != '-' || !argv[0][1])
1669 #ifndef PERL_STRICT_CR
1693 if ((s = moreswitches(s)))
1698 CHECK_MALLOC_TOO_LATE_FOR('t');
1699 if( !PL_tainting ) {
1700 PL_taint_warn = TRUE;
1706 CHECK_MALLOC_TOO_LATE_FOR('T');
1708 PL_taint_warn = FALSE;
1716 #ifdef MACOS_TRADITIONAL
1717 /* ignore -e for Dev:Pseudo argument */
1718 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
1721 forbid_setid('e', FALSE);
1723 PL_e_script = newSVpvs("");
1724 add_read_e_script = TRUE;
1727 sv_catpv(PL_e_script, s);
1729 sv_catpv(PL_e_script, argv[1]);
1733 Perl_croak(aTHX_ "No code specified for -%c", c);
1734 sv_catpvs(PL_e_script, "\n");
1738 #ifdef USE_SITECUSTOMIZE
1744 case 'I': /* -I handled both here and in moreswitches() */
1745 forbid_setid('I', FALSE);
1746 if (!*++s && (s=argv[1]) != NULL) {
1750 STRLEN len = strlen(s);
1751 const char * const p = savepvn(s, len);
1752 incpush(p, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
1753 sv_catpvs(sv, "-I");
1754 sv_catpvn(sv, p, len);
1759 Perl_croak(aTHX_ "No directory specified for -I");
1762 forbid_setid('S', FALSE);
1770 Perl_av_create_and_push(aTHX_ &PL_preambleav, newSVpvs("use Config;"));
1772 /* Can't do newSVpvs() as that would involve pre-processor
1773 condititionals inside a macro expansion. */
1774 opts_prog = Perl_newSVpv(aTHX_ "$_ = join ' ', sort qw("
1781 # ifdef PERL_DONT_CREATE_GVSV
1782 " PERL_DONT_CREATE_GVSV"
1784 # ifdef PERL_MALLOC_WRAP
1787 # ifdef PERL_MEM_LOG
1790 # ifdef PERL_MEM_LOG_ENV
1793 # ifdef PERL_MEM_LOG_ENV_FD
1794 " PERL_MEM_LOG_ENV_FD"
1796 # ifdef PERL_MEM_LOG_STDERR
1797 " PERL_MEM_LOG_STDERR"
1799 # ifdef PERL_MEM_LOG_TIMESTAMP
1800 " PERL_MEM_LOG_TIMESTAMP"
1802 # ifdef PERL_USE_DEVEL
1805 # ifdef PERL_USE_SAFE_PUTENV
1806 " PERL_USE_SAFE_PUTENV"
1808 # ifdef USE_SITECUSTOMIZE
1809 " USE_SITECUSTOMIZE"
1811 # ifdef USE_FAST_STDIO
1816 sv_catpv(opts_prog, PL_bincompat_options);
1817 /* Terminate the qw(, and then wrap at 76 columns. */
1818 sv_catpvs(opts_prog, "); s/(?=.{53})(.{1,53}) /$1\\n /mg;print Config::myconfig(),");
1820 sv_catpvs(opts_prog,"\"\\nCharacteristics of this PERLSHR image: \\n");
1822 sv_catpvs(opts_prog,"\"\\nCharacteristics of this binary (from libperl): \\n");
1824 sv_catpvs(opts_prog," Compile-time options: $_\\n\",");
1826 #if defined(LOCAL_PATCH_COUNT)
1827 if (LOCAL_PATCH_COUNT > 0) {
1829 sv_catpvs(opts_prog,
1830 "\" Locally applied patches:\\n\",");
1831 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1832 if (PL_localpatches[i])
1833 Perl_sv_catpvf(aTHX_ opts_prog,"q%c\t%s\n%c,",
1834 0, PL_localpatches[i], 0);
1838 Perl_sv_catpvf(aTHX_ opts_prog,
1839 "\" Built under %s\\n",OSNAME);
1842 sv_catpvs(opts_prog,
1843 " Compiled at " __DATE__ " " __TIME__ "\\n\"");
1845 sv_catpvs(opts_prog, " Compiled on " __DATE__ "\\n\"");
1848 sv_catpvs(opts_prog, "; $\"=\"\\n \"; "
1849 "@env = map { \"$_=\\\"$ENV{$_}\\\"\" } "
1850 "sort grep {/^PERL/} keys %ENV; ");
1852 sv_catpvs(opts_prog,
1853 "push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
1855 sv_catpvs(opts_prog,
1856 "print \" \\%ENV:\\n @env\\n\" if @env;"
1857 "print \" \\@INC:\\n @INC\\n\";");
1861 opts_prog = Perl_newSVpvf(aTHX_
1862 "Config::config_vars(qw%c%s%c)",
1866 av_push(PL_preambleav, opts_prog);
1867 /* don't look for script or read stdin */
1868 scriptname = BIT_BUCKET;
1872 PL_doextract = TRUE;
1880 if (!*++s || isSPACE(*s)) {
1884 /* catch use of gnu style long options */
1885 if (strEQ(s, "version")) {
1889 if (strEQ(s, "help")) {
1896 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1907 #ifndef SECURE_INTERNAL_GETENV
1910 (s = PerlEnv_getenv("PERL5OPT")))
1914 if (*s == '-' && *(s+1) == 'T') {
1915 CHECK_MALLOC_TOO_LATE_FOR('T');
1917 PL_taint_warn = FALSE;
1920 char *popt_copy = NULL;
1933 if (!strchr("CDIMUdmtw", *s))
1934 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
1938 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
1939 s = popt_copy + (s - d);
1947 if( !PL_tainting ) {
1948 PL_taint_warn = TRUE;
1959 #ifdef USE_SITECUSTOMIZE
1961 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
1962 Perl_newSVpvf(aTHX_ "BEGIN { do '%s/sitecustomize.pl' }", SITELIB_EXP));
1967 scriptname = argv[0];
1970 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1972 else if (scriptname == NULL) {
1974 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1980 /* Set $^X early so that it can be used for relocatable paths in @INC */
1981 assert (!PL_tainted);
1983 S_set_caret_X(aTHX);
1988 bool suidscript = FALSE;
1990 open_script(scriptname, dosearch, &suidscript, &rsfp);
1992 validate_suid(validarg, scriptname, fdscript, suidscript,
1996 # if defined(SIGCHLD) || defined(SIGCLD)
1999 # define SIGCHLD SIGCLD
2001 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2002 if (sigstate == (Sighandler_t) SIG_IGN) {
2003 if (ckWARN(WARN_SIGNAL))
2004 Perl_warner(aTHX_ packWARN(WARN_SIGNAL),
2005 "Can't ignore signal CHLD, forcing to default");
2006 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2013 #ifdef MACOS_TRADITIONAL
2014 || gMacPerl_AlwaysExtract
2018 /* This will croak if suidscript is true, as -x cannot be used with
2020 forbid_setid('x', suidscript);
2021 /* Hence you can't get here if suidscript is true */
2023 find_beginning(linestr_sv, rsfp);
2024 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2025 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2029 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
2030 CvUNIQUE_on(PL_compcv);
2032 CvPADLIST(PL_compcv) = pad_new(0);
2034 PL_isarev = newHV();
2037 boot_core_UNIVERSAL();
2038 boot_core_xsutils();
2042 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
2044 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC) || defined(SYMBIAN)
2050 # ifdef HAS_SOCKS5_INIT
2051 socks5_init(argv[0]);
2057 init_predump_symbols();
2058 /* init_postdump_symbols not currently designed to be called */
2059 /* more than once (ENV isn't cleared first, for example) */
2060 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
2062 init_postdump_symbols(argc,argv,env);
2064 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2065 * or explicitly in some platforms.
2066 * locale.c:Perl_init_i18nl10n() if the environment
2067 * look like the user wants to use UTF-8. */
2068 #if defined(__SYMBIAN32__)
2069 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2072 /* Requires init_predump_symbols(). */
2073 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
2078 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
2079 * and the default open disciplines. */
2080 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2081 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2083 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2084 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2085 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2087 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2088 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2089 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2091 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2092 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
2093 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2095 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2096 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2099 sv_setpvs(sv, ":utf8\0:utf8");
2101 sv_setpvs(sv, ":utf8\0");
2104 sv_setpvs(sv, "\0:utf8");
2112 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2113 if (strEQ(s, "unsafe"))
2114 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2115 else if (strEQ(s, "safe"))
2116 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2118 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2125 if ((s = PerlEnv_getenv("PERL_XMLDUMP"))) {
2129 PL_xmlfp = PerlIO_stdout();
2131 PL_xmlfp = PerlIO_open(s, "w");
2133 Perl_croak(aTHX_ "Can't open %s", s);
2135 my_setenv("PERL_XMLDUMP", NULL); /* hide from subprocs */
2141 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2142 PL_madskills = atoi(s);
2143 my_setenv("PERL_MADSKILLS", NULL); /* hide from subprocs */
2148 lex_start(linestr_sv, rsfp, TRUE);
2149 PL_subname = newSVpvs("main");
2151 if (add_read_e_script)
2152 filter_add(read_e_script, NULL);
2154 /* now parse the script */
2156 SETERRNO(0,SS_NORMAL);
2157 #ifdef MACOS_TRADITIONAL
2158 if (gMacPerl_SyntaxError = (yyparse() || PL_parser->error_count)) {
2160 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
2162 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
2163 MacPerl_MPWFileName(PL_origfilename));
2167 if (yyparse() || PL_parser->error_count) {
2169 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
2171 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
2176 CopLINE_set(PL_curcop, 0);
2177 PL_curstash = PL_defstash;
2179 SvREFCNT_dec(PL_e_script);
2187 SAVECOPFILE(PL_curcop);
2188 SAVECOPLINE(PL_curcop);
2189 gv_check(PL_defstash);
2198 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2199 dump_mstats("after compilation:");
2209 =for apidoc perl_run
2211 Tells a Perl interpreter to run. See L<perlembed>.
2224 PERL_ARGS_ASSERT_PERL_RUN;
2225 #ifndef MULTIPLICITY
2226 PERL_UNUSED_ARG(my_perl);
2229 oldscope = PL_scopestack_ix;
2237 cxstack_ix = -1; /* start context stack again */
2239 case 0: /* normal completion */
2243 case 2: /* my_exit() */
2244 while (PL_scopestack_ix > oldscope)
2247 PL_curstash = PL_defstash;
2248 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
2249 PL_endav && !PL_minus_c)
2250 call_list(oldscope, PL_endav);
2252 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2253 dump_mstats("after execution: ");
2259 POPSTACK_TO(PL_mainstack);
2262 PerlIO_printf(Perl_error_log, "panic: restartop\n");
2273 S_run_body(pTHX_ I32 oldscope)
2276 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
2277 PL_sawampersand ? "Enabling" : "Omitting"));
2279 if (!PL_restartop) {
2283 exit(0); /* less likely to core dump than my_exit(0) */
2286 DEBUG_x(dump_all());
2289 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
2293 #ifdef MACOS_TRADITIONAL
2294 PerlIO_printf(Perl_error_log, "%s%s syntax OK\n",
2295 (gMacPerl_ErrorFormat ? "# " : ""),
2296 MacPerl_MPWFileName(PL_origfilename));
2298 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
2302 if (PERLDB_SINGLE && PL_DBsingle)
2303 sv_setiv(PL_DBsingle, 1);
2305 call_list(oldscope, PL_initav);
2306 #ifdef PERL_DEBUG_READONLY_OPS
2307 Perl_pending_Slabs_to_ro(aTHX);
2314 PL_op = PL_restartop;
2318 else if (PL_main_start) {
2319 CvDEPTH(PL_main_cv) = 1;
2320 PL_op = PL_main_start;
2328 =head1 SV Manipulation Functions
2330 =for apidoc p||get_sv
2332 Returns the SV of the specified Perl scalar. C<flags> are passed to
2333 C<gv_fetchpv>. If C<GV_ADD> is set and the
2334 Perl variable does not exist then it will be created. If C<flags> is zero
2335 and the variable does not exist then NULL is returned.
2341 Perl_get_sv(pTHX_ const char *name, I32 flags)
2345 PERL_ARGS_ASSERT_GET_SV;
2347 gv = gv_fetchpv(name, flags, SVt_PV);
2354 =head1 Array Manipulation Functions
2356 =for apidoc p||get_av
2358 Returns the AV of the specified Perl array. C<flags> are passed to
2359 C<gv_fetchpv>. If C<GV_ADD> is set and the
2360 Perl variable does not exist then it will be created. If C<flags> is zero
2361 and the variable does not exist then NULL is returned.
2367 Perl_get_av(pTHX_ const char *name, I32 flags)
2369 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
2371 PERL_ARGS_ASSERT_GET_AV;
2381 =head1 Hash Manipulation Functions
2383 =for apidoc p||get_hv
2385 Returns the HV of the specified Perl hash. C<flags> are passed to
2386 C<gv_fetchpv>. If C<GV_ADD> is set and the
2387 Perl variable does not exist then it will be created. If C<flags> is zero
2388 and the variable does not exist then NULL is returned.
2394 Perl_get_hv(pTHX_ const char *name, I32 flags)
2396 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
2398 PERL_ARGS_ASSERT_GET_HV;
2408 =head1 CV Manipulation Functions
2410 =for apidoc p||get_cvn_flags
2412 Returns the CV of the specified Perl subroutine. C<flags> are passed to
2413 C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2414 exist then it will be declared (which has the same effect as saying
2415 C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2416 then NULL is returned.
2418 =for apidoc p||get_cv
2420 Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
2426 Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
2428 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
2429 /* XXX this is probably not what they think they're getting.
2430 * It has the same effect as "sub name;", i.e. just a forward
2433 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2435 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
2436 SV *const sv = newSVpvn_flags(name, len, flags & SVf_UTF8);
2437 return newSUB(start_subparse(FALSE, 0),
2438 newSVOP(OP_CONST, 0, sv),
2446 /* Nothing in core calls this now, but we can't replace it with a macro and
2447 move it to mathoms.c as a macro would evaluate name twice. */
2449 Perl_get_cv(pTHX_ const char *name, I32 flags)
2451 PERL_ARGS_ASSERT_GET_CV;
2453 return get_cvn_flags(name, strlen(name), flags);
2456 /* Be sure to refetch the stack pointer after calling these routines. */
2460 =head1 Callback Functions
2462 =for apidoc p||call_argv
2464 Performs a callback to the specified Perl sub. See L<perlcall>.
2470 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
2472 /* See G_* flags in cop.h */
2473 /* null terminated arg list */
2478 PERL_ARGS_ASSERT_CALL_ARGV;
2483 mXPUSHs(newSVpv(*argv,0));
2488 return call_pv(sub_name, flags);
2492 =for apidoc p||call_pv
2494 Performs a callback to the specified Perl sub. See L<perlcall>.
2500 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
2501 /* name of the subroutine */
2502 /* See G_* flags in cop.h */
2504 PERL_ARGS_ASSERT_CALL_PV;
2506 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
2510 =for apidoc p||call_method
2512 Performs a callback to the specified Perl method. The blessed object must
2513 be on the stack. See L<perlcall>.
2519 Perl_call_method(pTHX_ const char *methname, I32 flags)
2520 /* name of the subroutine */
2521 /* See G_* flags in cop.h */
2523 PERL_ARGS_ASSERT_CALL_METHOD;
2525 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
2528 /* May be called with any of a CV, a GV, or an SV containing the name. */
2530 =for apidoc p||call_sv
2532 Performs a callback to the Perl sub whose name is in the SV. See
2539 Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
2540 /* See G_* flags in cop.h */
2543 LOGOP myop; /* fake syntax tree node */
2548 bool oldcatch = CATCH_GET;
2550 OP* const oldop = PL_op;
2553 PERL_ARGS_ASSERT_CALL_SV;
2555 if (flags & G_DISCARD) {
2559 if (!(flags & G_WANT)) {
2560 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2565 Zero(&myop, 1, LOGOP);
2566 myop.op_next = NULL;
2567 if (!(flags & G_NOARGS))
2568 myop.op_flags |= OPf_STACKED;
2569 myop.op_flags |= OP_GIMME_REVERSE(flags);
2573 EXTEND(PL_stack_sp, 1);
2574 *++PL_stack_sp = sv;
2576 oldscope = PL_scopestack_ix;
2578 if (PERLDB_SUB && PL_curstash != PL_debstash
2579 /* Handle first BEGIN of -d. */
2580 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
2581 /* Try harder, since this may have been a sighandler, thus
2582 * curstash may be meaningless. */
2583 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
2584 && !(flags & G_NODEBUG))
2585 PL_op->op_private |= OPpENTERSUB_DB;
2587 if (flags & G_METHOD) {
2588 Zero(&method_op, 1, UNOP);
2589 method_op.op_next = PL_op;
2590 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2591 method_op.op_type = OP_METHOD;
2592 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
2593 myop.op_type = OP_ENTERSUB;
2594 PL_op = (OP*)&method_op;
2597 if (!(flags & G_EVAL)) {
2599 CALL_BODY_SUB((OP*)&myop);
2600 retval = PL_stack_sp - (PL_stack_base + oldmark);
2601 CATCH_SET(oldcatch);
2604 myop.op_other = (OP*)&myop;
2606 create_eval_scope(flags|G_FAKINGEVAL);
2614 CALL_BODY_SUB((OP*)&myop);
2615 retval = PL_stack_sp - (PL_stack_base + oldmark);
2616 if (!(flags & G_KEEPERR)) {
2624 /* my_exit() was called */
2625 PL_curstash = PL_defstash;
2628 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
2629 Perl_croak(aTHX_ "Callback called exit");
2634 PL_op = PL_restartop;
2638 PL_stack_sp = PL_stack_base + oldmark;
2639 if ((flags & G_WANT) == G_ARRAY)
2643 *++PL_stack_sp = &PL_sv_undef;
2648 if (PL_scopestack_ix > oldscope)
2649 delete_eval_scope();
2653 if (flags & G_DISCARD) {
2654 PL_stack_sp = PL_stack_base + oldmark;
2663 /* Eval a string. The G_EVAL flag is always assumed. */
2666 =for apidoc p||eval_sv
2668 Tells Perl to C<eval> the string in the SV.
2674 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
2676 /* See G_* flags in cop.h */
2680 UNOP myop; /* fake syntax tree node */
2681 VOL I32 oldmark = SP - PL_stack_base;
2684 OP* const oldop = PL_op;
2687 PERL_ARGS_ASSERT_EVAL_SV;
2689 if (flags & G_DISCARD) {
2696 Zero(PL_op, 1, UNOP);
2697 EXTEND(PL_stack_sp, 1);
2698 *++PL_stack_sp = sv;
2700 if (!(flags & G_NOARGS))
2701 myop.op_flags = OPf_STACKED;
2702 myop.op_next = NULL;
2703 myop.op_type = OP_ENTEREVAL;
2704 myop.op_flags |= OP_GIMME_REVERSE(flags);
2705 if (flags & G_KEEPERR)
2706 myop.op_flags |= OPf_SPECIAL;
2708 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2709 * before a PUSHEVAL, which corrupts the stack after a croak */
2710 TAINT_PROPER("eval_sv()");
2716 CALL_BODY_EVAL((OP*)&myop);
2717 retval = PL_stack_sp - (PL_stack_base + oldmark);
2718 if (!(flags & G_KEEPERR)) {
2726 /* my_exit() was called */
2727 PL_curstash = PL_defstash;
2730 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
2731 Perl_croak(aTHX_ "Callback called exit");
2736 PL_op = PL_restartop;
2740 PL_stack_sp = PL_stack_base + oldmark;
2741 if ((flags & G_WANT) == G_ARRAY)
2745 *++PL_stack_sp = &PL_sv_undef;
2751 if (flags & G_DISCARD) {
2752 PL_stack_sp = PL_stack_base + oldmark;
2762 =for apidoc p||eval_pv
2764 Tells Perl to C<eval> the given string and return an SV* result.
2770 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
2774 SV* sv = newSVpv(p, 0);
2776 PERL_ARGS_ASSERT_EVAL_PV;
2778 eval_sv(sv, G_SCALAR);
2785 if (croak_on_error && SvTRUE(ERRSV)) {
2786 Perl_croak(aTHX_ "%s", SvPVx_nolen_const(ERRSV));
2792 /* Require a module. */
2795 =head1 Embedding Functions
2797 =for apidoc p||require_pv
2799 Tells Perl to C<require> the file named by the string argument. It is
2800 analogous to the Perl code C<eval "require '$file'">. It's even
2801 implemented that way; consider using load_module instead.
2806 Perl_require_pv(pTHX_ const char *pv)
2812 PERL_ARGS_ASSERT_REQUIRE_PV;
2814 PUSHSTACKi(PERLSI_REQUIRE);
2816 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2817 eval_sv(sv_2mortal(sv), G_DISCARD);
2823 S_usage(pTHX_ const char *name) /* XXX move this out into a module ? */
2825 /* This message really ought to be max 23 lines.
2826 * Removed -h because the user already knows that option. Others? */
2828 static const char * const usage_msg[] = {
2829 "-0[octal] specify record separator (\\0, if no argument)",
2830 "-a autosplit mode with -n or -p (splits $_ into @F)",
2831 "-C[number/list] enables the listed Unicode features",
2832 "-c check syntax only (runs BEGIN and CHECK blocks)",
2833 "-d[:debugger] run program under debugger",
2834 "-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2835 "-e program one line of program (several -e's allowed, omit programfile)",
2836 "-E program like -e, but enables all optional features",
2837 "-f don't do $sitelib/sitecustomize.pl at startup",
2838 "-F/pattern/ split() pattern for -a switch (//'s are optional)",
2839 "-i[extension] edit <> files in place (makes backup if extension supplied)",
2840 "-Idirectory specify @INC/#include directory (several -I's allowed)",
2841 "-l[octal] enable line ending processing, specifies line terminator",
2842 "-[mM][-]module execute \"use/no module...\" before executing program",
2843 "-n assume \"while (<>) { ... }\" loop around program",
2844 "-p assume loop like -n but print line also, like sed",
2845 "-s enable rudimentary parsing for switches after programfile",
2846 "-S look for programfile using PATH environment variable",
2847 "-t enable tainting warnings",
2848 "-T enable tainting checks",
2849 "-u dump core after parsing program",
2850 "-U allow unsafe operations",
2851 "-v print version, subversion (includes VERY IMPORTANT perl info)",
2852 "-V[:variable] print configuration summary (or a single Config.pm variable)",
2853 "-w enable many useful warnings (RECOMMENDED)",
2854 "-W enable all warnings",
2855 "-x[directory] strip off text before #!perl line and perhaps cd to directory",
2856 "-X disable all warnings",
2860 const char * const *p = usage_msg;
2862 PERL_ARGS_ASSERT_USAGE;
2864 PerlIO_printf(PerlIO_stdout(),
2865 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2868 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
2871 /* convert a string of -D options (or digits) into an int.
2872 * sets *s to point to the char after the options */
2876 Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
2878 static const char * const usage_msgd[] = {
2879 " Debugging flag values: (see also -d)",
2880 " p Tokenizing and parsing (with v, displays parse stack)",
2881 " s Stack snapshots (with v, displays all stacks)",
2882 " l Context (loop) stack processing",
2883 " t Trace execution",
2884 " o Method and overloading resolution",
2885 " c String/numeric conversions",
2886 " P Print profiling info, source file input state",
2887 " m Memory and SV allocation",
2888 " f Format processing",
2889 " r Regular expression parsing and execution",
2890 " x Syntax tree dump",
2891 " u Tainting checks",
2892 " H Hash dump -- usurps values()",
2893 " X Scratchpad allocation",
2896 " R Include reference counts of dumped variables (eg when using -Ds)",
2897 " J Do not s,t,P-debug (Jump over) opcodes within package DB",
2898 " v Verbose: use in conjunction with other flags",
2900 " A Consistency checks on internal structures",
2901 " q quiet - currently only suppresses the 'EXECUTING' message",
2906 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
2909 /* if adding extra options, remember to update DEBUG_MASK */
2910 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAq";
2912 for (; isALNUM(**s); (*s)++) {
2913 const char * const d = strchr(debopts,**s);
2915 i |= 1 << (d - debopts);
2916 else if (ckWARN_d(WARN_DEBUGGING))
2917 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2918 "invalid option -D%c, use -D'' to see choices\n", **s);
2921 else if (isDIGIT(**s)) {
2923 for (; isALNUM(**s); (*s)++) ;
2925 else if (givehelp) {
2926 const char *const *p = usage_msgd;
2927 while (*p) PerlIO_printf(PerlIO_stdout(), "%s\n", *p++);
2930 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
2931 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2932 "-Dp not implemented on this platform\n");
2938 /* This routine handles any switches that can be given during run */
2941 Perl_moreswitches(pTHX_ const char *s)
2945 const char option = *s; /* used to remember option in -m/-M code */
2947 PERL_ARGS_ASSERT_MORESWITCHES;
2955 SvREFCNT_dec(PL_rs);
2956 if (s[1] == 'x' && s[2]) {
2957 const char *e = s+=2;
2963 flags = PERL_SCAN_SILENT_ILLDIGIT;
2964 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
2965 if (s + numlen < e) {
2966 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
2970 PL_rs = newSVpvs("");
2971 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
2972 tmps = (U8*)SvPVX(PL_rs);
2973 uvchr_to_utf8(tmps, rschar);
2974 SvCUR_set(PL_rs, UNISKIP(rschar));
2979 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
2980 if (rschar & ~((U8)~0))
2981 PL_rs = &PL_sv_undef;
2982 else if (!rschar && numlen >= 2)
2983 PL_rs = newSVpvs("");
2985 char ch = (char)rschar;
2986 PL_rs = newSVpvn(&ch, 1);
2989 sv_setsv(get_sv("/", GV_ADD), PL_rs);
2994 PL_unicode = parse_unicode_opts( (const char **)&s );
2995 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3001 while (*s && !isSPACE(*s)) ++s;
3002 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
3013 forbid_setid('d', FALSE);
3016 /* -dt indicates to the debugger that threads will be used */
3017 if (*s == 't' && !isALNUM(s[1])) {
3019 my_setenv("PERL5DB_THREADED", "1");
3022 /* The following permits -d:Mod to accepts arguments following an =
3023 in the fashion that -MSome::Mod does. */
3024 if (*s == ':' || *s == '=') {
3025 const char *start = ++s;
3026 const char *const end = s + strlen(s);
3027 SV * const sv = newSVpvs("use Devel::");
3029 /* We now allow -d:Module=Foo,Bar */
3030 while(isALNUM(*s) || *s==':') ++s;
3032 sv_catpvn(sv, start, end - start);
3034 sv_catpvn(sv, start, s-start);
3035 /* Don't use NUL as q// delimiter here, this string goes in the
3037 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
3040 my_setenv("PERL5DB", SvPV_nolen_const(sv));
3044 PL_perldb = PERLDB_ALL;
3051 forbid_setid('D', FALSE);
3053 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
3054 #else /* !DEBUGGING */
3055 if (ckWARN_d(WARN_DEBUGGING))
3056 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3057 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
3058 for (s++; isALNUM(*s); s++) ;
3063 usage(PL_origargv[0]);
3066 Safefree(PL_inplace);
3067 #if defined(__CYGWIN__) /* do backup extension automagically */
3068 if (*(s+1) == '\0') {
3069 PL_inplace = savepvs(".bak");
3072 #endif /* __CYGWIN__ */
3074 const char * const start = ++s;
3075 while (*s && !isSPACE(*s))
3078 PL_inplace = savepvn(start, s - start);
3082 if (*s == '-') /* Additional switches on #! line. */
3086 case 'I': /* -I handled both here and in parse_body() */
3087 forbid_setid('I', FALSE);
3089 while (*s && isSPACE(*s))
3094 /* ignore trailing spaces (possibly followed by other switches) */
3096 for (e = p; *e && !isSPACE(*e); e++) ;
3100 } while (*p && *p != '-');
3101 e = savepvn(s, e-s);
3103 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
3110 Perl_croak(aTHX_ "No directory specified for -I");
3116 SvREFCNT_dec(PL_ors_sv);
3122 PL_ors_sv = newSVpvs("\n");
3123 numlen = 3 + (*s == '0');
3124 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
3128 if (RsPARA(PL_rs)) {
3129 PL_ors_sv = newSVpvs("\n\n");
3132 PL_ors_sv = newSVsv(PL_rs);
3137 forbid_setid('M', FALSE); /* XXX ? */
3140 forbid_setid('m', FALSE); /* XXX ? */
3145 const char *use = "use ";
3147 /* -M-foo == 'no foo' */
3148 /* Leading space on " no " is deliberate, to make both
3149 possibilities the same length. */
3150 if (*s == '-') { use = " no "; ++s; }
3151 sv = newSVpvn(use,4);
3153 /* We allow -M'Module qw(Foo Bar)' */
3154 while(isALNUM(*s) || *s==':') {
3163 Perl_croak(aTHX_ "Module name required with -%c option",
3166 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3167 "contains single ':'",
3168 (int)(s - start), start, option);
3169 end = s + strlen(s);
3171 sv_catpvn(sv, start, end - start);
3172 if (option == 'm') {
3174 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
3175 sv_catpvs( sv, " ()");
3178 sv_catpvn(sv, start, s-start);
3179 /* Use NUL as q''-delimiter. */
3180 sv_catpvs(sv, " split(/,/,q\0");
3182 sv_catpvn(sv, s, end - s);
3183 sv_catpvs(sv, "\0)");
3186 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
3189 Perl_croak(aTHX_ "Missing argument to -%c", option);
3200 forbid_setid('s', FALSE);
3201 PL_doswitches = TRUE;
3215 #ifdef MACOS_TRADITIONAL
3216 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
3218 PL_do_undump = TRUE;
3226 if (!sv_derived_from(PL_patchlevel, "version"))
3227 upg_version(PL_patchlevel, TRUE);
3230 SV* level= vstringify(PL_patchlevel);
3231 #ifdef PERL_PATCHNUM
3232 # ifdef PERL_GIT_UNCOMMITTED_CHANGES
3233 SV *num = newSVpvs(PERL_PATCHNUM "*");
3235 SV *num = newSVpvs(PERL_PATCHNUM);
3238 if (sv_len(num)>=sv_len(level) && strnEQ(SvPV_nolen(num),SvPV_nolen(level),sv_len(level))) {
3239 SvREFCNT_dec(level);
3242 Perl_sv_catpvf(aTHX_ level, " (%"SVf")", num);
3246 PerlIO_printf(PerlIO_stdout(),
3247 "\nThis is perl, %"SVf
3251 SvREFCNT_dec(level);
3254 /* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3255 PerlIO_printf(PerlIO_stdout(),
3256 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
3257 SVfARG(vstringify(PL_patchlevel))));
3258 PerlIO_printf(PerlIO_stdout(),
3259 Perl_form(aTHX_ " built under %s at %s %s\n",
3260 OSNAME, __DATE__, __TIME__));
3261 PerlIO_printf(PerlIO_stdout(),
3262 Perl_form(aTHX_ " OS Specific Release: %s\n",
3265 #if defined(LOCAL_PATCH_COUNT)
3266 if (LOCAL_PATCH_COUNT > 0)
3267 PerlIO_printf(PerlIO_stdout(),
3268 "\n(with %d registered patch%s, "
3269 "see perl -V for more detail)",
3271 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
3274 PerlIO_printf(PerlIO_stdout(),
3275 "\n\nCopyright 1987-2009, Larry Wall\n");
3276 #ifdef MACOS_TRADITIONAL
3277 PerlIO_printf(PerlIO_stdout(),
3278 "\nMac OS port Copyright 1991-2002, Matthias Neeracher;\n"
3279 "maintained by Chris Nandor\n");
3282 PerlIO_printf(PerlIO_stdout(),
3283 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
3286 PerlIO_printf(PerlIO_stdout(),
3287 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3288 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
3291 PerlIO_printf(PerlIO_stdout(),
3292 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
3293 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
3296 PerlIO_printf(PerlIO_stdout(),
3297 "atariST series port, ++jrb bammi@cadence.com\n");
3300 PerlIO_printf(PerlIO_stdout(),
3301 "BeOS port Copyright Tom Spindler, 1997-1999\n");
3304 PerlIO_printf(PerlIO_stdout(),
3305 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n");
3308 PerlIO_printf(PerlIO_stdout(),
3309 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
3312 PerlIO_printf(PerlIO_stdout(),
3313 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
3316 PerlIO_printf(PerlIO_stdout(),
3317 "VM/ESA port by Neale Ferguson, 1998-1999\n");
3320 PerlIO_printf(PerlIO_stdout(),
3321 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
3324 PerlIO_printf(PerlIO_stdout(),
3325 "MiNT port by Guido Flohr, 1997-1999\n");
3328 PerlIO_printf(PerlIO_stdout(),
3329 "EPOC port by Olaf Flebbe, 1999-2002\n");
3332 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
3333 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
3336 #ifdef __SYMBIAN32__
3337 PerlIO_printf(PerlIO_stdout(),
3338 "Symbian port by Nokia, 2004-2005\n");
3340 #ifdef BINARY_BUILD_NOTICE
3341 BINARY_BUILD_NOTICE;
3343 PerlIO_printf(PerlIO_stdout(),
3345 Perl may be copied only under the terms of either the Artistic License or the\n\
3346 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
3347 Complete documentation for Perl, including FAQ lists, should be found on\n\
3348 this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
3349 Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
3352 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
3353 PL_dowarn |= G_WARN_ON;
3358 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
3359 if (!specialWARN(PL_compiling.cop_warnings))
3360 PerlMemShared_free(PL_compiling.cop_warnings);
3361 PL_compiling.cop_warnings = pWARN_ALL ;
3365 PL_dowarn = G_WARN_ALL_OFF;
3366 if (!specialWARN(PL_compiling.cop_warnings))
3367 PerlMemShared_free(PL_compiling.cop_warnings);
3368 PL_compiling.cop_warnings = pWARN_NONE ;
3375 if (s[0] == '-') /* Additional switches on #! line. */
3380 #if defined(WIN32) || !defined(PERL_STRICT_CR)
3386 #ifdef ALTERNATE_SHEBANG
3387 case 'S': /* OS/2 needs -S on "extproc" line. */
3391 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
3396 /* compliments of Tom Christiansen */
3398 /* unexec() can be found in the Gnu emacs distribution */
3399 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
3402 Perl_my_unexec(pTHX)
3404 PERL_UNUSED_CONTEXT;
3406 SV * prog = newSVpv(BIN_EXP, 0);
3407 SV * file = newSVpv(PL_origfilename, 0);
3411 sv_catpvs(prog, "/perl");
3412 sv_catpvs(file, ".perldump");
3414 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3415 /* unexec prints msg to stderr in case of failure */
3416 PerlProc_exit(status);
3419 # include <lib$routines.h>
3420 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
3421 # elif defined(WIN32) || defined(__CYGWIN__)
3422 Perl_croak(aTHX_ "dump is not supported");
3424 ABORT(); /* for use with undump */
3429 /* initialize curinterp */
3435 # define PERLVAR(var,type)
3436 # define PERLVARA(var,n,type)
3437 # if defined(PERL_IMPLICIT_CONTEXT)
3438 # define PERLVARI(var,type,init) aTHX->var = init;
3439 # define PERLVARIC(var,type,init) aTHX->var = init;
3441 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
3442 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
3444 # include "intrpvar.h"
3450 # define PERLVAR(var,type)
3451 # define PERLVARA(var,n,type)
3452 # define PERLVARI(var,type,init) PL_##var = init;
3453 # define PERLVARIC(var,type,init) PL_##var = init;
3454 # include "intrpvar.h"
3461 /* As these are inside a structure, PERLVARI isn't capable of initialising
3463 PL_reg_oldcurpm = PL_reg_curpm = NULL;
3464 PL_reg_poscache = PL_reg_starttry = NULL;
3468 S_init_main_stash(pTHX)
3473 PL_curstash = PL_defstash = newHV();
3474 /* We know that the string "main" will be in the global shared string
3475 table, so it's a small saving to use it rather than allocate another
3477 PL_curstname = newSVpvs_share("main");
3478 gv = gv_fetchpvs("main::", GV_ADD|GV_NOTQUAL, SVt_PVHV);
3479 /* If we hadn't caused another reference to "main" to be in the shared
3480 string table above, then it would be worth reordering these two,
3481 because otherwise all we do is delete "main" from it as a consequence
3482 of the SvREFCNT_dec, only to add it again with hv_name_set */
3483 SvREFCNT_dec(GvHV(gv));
3484 hv_name_set(PL_defstash, "main", 4, 0);
3485 GvHV(gv) = MUTABLE_HV(SvREFCNT_inc_simple(PL_defstash));
3487 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpvs("INC", GV_ADD|GV_NOTQUAL,
3489 SvREFCNT_inc_simple_void(PL_incgv); /* Don't allow it to be freed */
3490 GvMULTI_on(PL_incgv);
3491 PL_hintgv = gv_fetchpvs("\010", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^H */
3492 GvMULTI_on(PL_hintgv);
3493 PL_defgv = gv_fetchpvs("_", GV_ADD|GV_NOTQUAL, SVt_PVAV);
3494 SvREFCNT_inc_simple_void(PL_defgv);
3495 PL_errgv = gv_HVadd(gv_fetchpvs("@", GV_ADD|GV_NOTQUAL, SVt_PV));
3496 SvREFCNT_inc_simple_void(PL_errgv);
3497 GvMULTI_on(PL_errgv);
3498 PL_replgv = gv_fetchpvs("\022", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^R */
3499 GvMULTI_on(PL_replgv);
3500 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
3501 #ifdef PERL_DONT_CREATE_GVSV
3504 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
3506 PL_curstash = PL_defstash;
3507 CopSTASH_set(&PL_compiling, PL_defstash);
3508 PL_debstash = GvHV(gv_fetchpvs("DB::", GV_ADDMULTI, SVt_PVHV));
3509 PL_globalstash = GvHV(gv_fetchpvs("CORE::GLOBAL::", GV_ADDMULTI,
3511 /* We must init $/ before switches are processed. */
3512 sv_setpvs(get_sv("/", GV_ADD), "\n");
3516 S_open_script(pTHX_ const char *scriptname, bool dosearch,
3517 bool *suidscript, PerlIO **rsfpp)
3522 PERL_ARGS_ASSERT_OPEN_SCRIPT;
3525 PL_origfilename = savepvs("-e");
3528 /* if find_script() returns, it returns a malloc()-ed value */
3529 scriptname = PL_origfilename = find_script(scriptname, dosearch, NULL, 1);
3531 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
3532 const char *s = scriptname + 8;
3538 * Tell apart "normal" usage of fdscript, e.g.
3539 * with bash on FreeBSD:
3540 * perl <( echo '#!perl -DA'; echo 'print "$0\n"')
3541 * from usage in suidperl.
3542 * Does any "normal" usage leave garbage after the number???
3543 * Is it a mistake to use a similar /dev/fd/ construct for
3548 * Be supersafe and do some sanity-checks.
3549 * Still, can we be sure we got the right thing?
3552 Perl_croak(aTHX_ "Wrong syntax (suid) fd script name \"%s\"\n", s);
3555 Perl_croak(aTHX_ "Missing (suid) fd script name\n");
3557 scriptname = savepv(s + 1);
3558 Safefree(PL_origfilename);
3559 PL_origfilename = (char *)scriptname;
3564 CopFILE_free(PL_curcop);
3565 CopFILE_set(PL_curcop, PL_origfilename);
3566 if (*PL_origfilename == '-' && PL_origfilename[1] == '\0')
3567 scriptname = (char *)"";
3568 if (fdscript >= 0) {
3569 *rsfpp = PerlIO_fdopen(fdscript,PERL_SCRIPT_MODE);
3570 # if defined(HAS_FCNTL) && defined(F_SETFD)
3572 /* ensure close-on-exec */
3573 fcntl(PerlIO_fileno(*rsfpp),F_SETFD,1);
3576 else if (!*scriptname) {
3577 forbid_setid(0, *suidscript);
3578 *rsfpp = PerlIO_stdin();
3581 #ifdef FAKE_BIT_BUCKET
3582 /* This hack allows one not to have /dev/null (or BIT_BUCKET as it
3583 * is called) and still have the "-e" work. (Believe it or not,
3584 * a /dev/null is required for the "-e" to work because source
3585 * filter magic is used to implement it. ) This is *not* a general
3586 * replacement for a /dev/null. What we do here is create a temp
3587 * file (an empty file), open up that as the script, and then
3588 * immediately close and unlink it. Close enough for jazz. */
3589 #define FAKE_BIT_BUCKET_PREFIX "/tmp/perlnull-"
3590 #define FAKE_BIT_BUCKET_SUFFIX "XXXXXXXX"
3591 #define FAKE_BIT_BUCKET_TEMPLATE FAKE_BIT_BUCKET_PREFIX FAKE_BIT_BUCKET_SUFFIX
3592 char tmpname[sizeof(FAKE_BIT_BUCKET_TEMPLATE)] = {
3593 FAKE_BIT_BUCKET_TEMPLATE
3595 const char * const err = "Failed to create a fake bit bucket";
3596 if (strEQ(scriptname, BIT_BUCKET)) {
3597 #ifdef HAS_MKSTEMP /* Hopefully mkstemp() is safe here. */
3598 int tmpfd = mkstemp(tmpname);
3600 scriptname = tmpname;
3603 Perl_croak(aTHX_ err);
3606 scriptname = mktemp(tmpname);
3608 Perl_croak(aTHX_ err);
3613 *rsfpp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
3614 #ifdef FAKE_BIT_BUCKET
3615 if (memEQ(scriptname, FAKE_BIT_BUCKET_PREFIX,
3616 sizeof(FAKE_BIT_BUCKET_PREFIX) - 1)
3617 && strlen(scriptname) == sizeof(tmpname) - 1) {
3620 scriptname = BIT_BUCKET;
3622 # if defined(HAS_FCNTL) && defined(F_SETFD)
3624 /* ensure close-on-exec */
3625 fcntl(PerlIO_fileno(*rsfpp),F_SETFD,1);
3629 /* PSz 16 Sep 03 Keep neat error message */
3631 Perl_croak(aTHX_ "Can't open "BIT_BUCKET": %s\n", Strerror(errno));
3633 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3634 CopFILE(PL_curcop), Strerror(errno));
3640 * I_SYSSTATVFS HAS_FSTATVFS
3642 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
3643 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
3644 * here so that metaconfig picks them up. */
3647 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
3648 /* Don't even need this function. */
3651 S_validate_suid(pTHX_ PerlIO *rsfp)
3653 PERL_ARGS_ASSERT_VALIDATE_SUID;
3655 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
3658 PerlLIO_fstat(PerlIO_fileno(rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3659 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3661 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3664 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3665 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3666 /* not set-id, must be wrapped */
3669 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3672 S_find_beginning(pTHX_ SV* linestr_sv, PerlIO *rsfp)
3676 register const char *s2;
3677 #ifdef MACOS_TRADITIONAL
3681 PERL_ARGS_ASSERT_FIND_BEGINNING;
3683 /* skip forward in input to the real script? */
3685 #ifdef MACOS_TRADITIONAL
3686 /* Since the Mac OS does not honor #! arguments for us, we do it ourselves */
3688 while (PL_doextract || gMacPerl_AlwaysExtract) {
3689 if ((s = sv_gets(linestr_sv, rsfp, 0)) == NULL) {
3690 if (!gMacPerl_AlwaysExtract)
3691 Perl_croak(aTHX_ "No Perl script found in input\n");
3693 if (PL_doextract) /* require explicit override ? */
3694 if (!OverrideExtract(PL_origfilename))
3695 Perl_croak(aTHX_ "User aborted script\n");
3697 PL_doextract = FALSE;
3699 /* Pater peccavi, file does not have #! */
3700 PerlIO_rewind(rsfp);
3705 while (PL_doextract) {
3706 if ((s = sv_gets(linestr_sv, rsfp, 0)) == NULL)
3707 Perl_croak(aTHX_ "No Perl script found in input\n");
3710 if (*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))) {
3711 PerlIO_ungetc(rsfp, '\n'); /* to keep line count right */
3712 PL_doextract = FALSE;
3713 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3715 while (*s == ' ' || *s == '\t') s++;
3717 while (isDIGIT(s2[-1]) || s2[-1] == '-' || s2[-1] == '.'
3718 || s2[-1] == '_') s2--;
3719 if (strnEQ(s2-4,"perl",4))
3720 while ((s = moreswitches(s)))
3723 #ifdef MACOS_TRADITIONAL
3724 /* We are always searching for the #!perl line in MacPerl,
3725 * so if we find it, still keep the line count correct
3726 * by counting lines we already skipped over
3728 for (; maclines > 0 ; maclines--)
3729 PerlIO_ungetc(rsfp, '\n');
3733 /* gMacPerl_AlwaysExtract is false in MPW tool */
3734 } else if (gMacPerl_AlwaysExtract) {
3746 PL_uid = PerlProc_getuid();
3747 PL_euid = PerlProc_geteuid();
3748 PL_gid = PerlProc_getgid();
3749 PL_egid = PerlProc_getegid();
3751 PL_uid |= PL_gid << 16;
3752 PL_euid |= PL_egid << 16;
3754 /* Should not happen: */
3755 CHECK_MALLOC_TAINT(PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3756 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3759 * Should go by suidscript, not uid!=euid: why disallow
3760 * system("ls") in scripts run from setuid things?
3761 * Or, is this run before we check arguments and set suidscript?
3762 * What about SETUID_SCRIPTS_ARE_SECURE_NOW: could we use fdscript then?
3763 * (We never have suidscript, can we be sure to have fdscript?)
3764 * Or must then go by UID checks? See comments in forbid_setid also.
3768 /* This is used very early in the lifetime of the program,
3769 * before even the options are parsed, so PL_tainting has
3770 * not been initialized properly. */
3772 Perl_doing_taint(int argc, char *argv[], char *envp[])
3774 #ifndef PERL_IMPLICIT_SYS
3775 /* If we have PERL_IMPLICIT_SYS we can't call getuid() et alia
3776 * before we have an interpreter-- and the whole point of this
3777 * function is to be called at such an early stage. If you are on
3778 * a system with PERL_IMPLICIT_SYS but you do have a concept of
3779 * "tainted because running with altered effective ids', you'll
3780 * have to add your own checks somewhere in here. The two most
3781 * known samples of 'implicitness' are Win32 and NetWare, neither
3782 * of which has much of concept of 'uids'. */
3783 int uid = PerlProc_getuid();
3784 int euid = PerlProc_geteuid();
3785 int gid = PerlProc_getgid();
3786 int egid = PerlProc_getegid();
3793 if (uid && (euid != uid || egid != gid))
3795 #endif /* !PERL_IMPLICIT_SYS */
3796 /* This is a really primitive check; environment gets ignored only
3797 * if -T are the first chars together; otherwise one gets
3798 * "Too late" message. */
3799 if ( argc > 1 && argv[1][0] == '-'
3800 && (argv[1][1] == 't' || argv[1][1] == 'T') )
3805 /* Passing the flag as a single char rather than a string is a slight space
3806 optimisation. The only message that isn't /^-.$/ is
3807 "program input from stdin", which is substituted in place of '\0', which
3808 could never be a command line flag. */
3810 S_forbid_setid(pTHX_ const char flag, const bool suidscript) /* g */
3813 char string[3] = "-x";
3814 const char *message = "program input from stdin";
3821 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
3822 if (PL_euid != PL_uid)
3823 Perl_croak(aTHX_ "No %s allowed while running setuid", message);
3824 if (PL_egid != PL_gid)
3825 Perl_croak(aTHX_ "No %s allowed while running setgid", message);
3826 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3828 Perl_croak(aTHX_ "No %s allowed with (suid) fdscript", message);
3832 Perl_init_debugger(pTHX)
3835 HV * const ostash = PL_curstash;
3837 PL_curstash = PL_debstash;
3838 PL_dbargs = GvAV(gv_AVadd((gv_fetchpvs("DB::args", GV_ADDMULTI,
3840 AvREAL_off(PL_dbargs);
3841 PL_DBgv = gv_fetchpvs("DB::DB", GV_ADDMULTI, SVt_PVGV);
3842 PL_DBline = gv_fetchpvs("DB::dbline", GV_ADDMULTI, SVt_PVAV);
3843 PL_DBsub = gv_HVadd(gv_fetchpvs("DB::sub", GV_ADDMULTI, SVt_PVHV));
3844 PL_DBsingle = GvSV((gv_fetchpvs("DB::single", GV_ADDMULTI, SVt_PV)));
3845 sv_setiv(PL_DBsingle, 0);
3846 PL_DBtrace = GvSV((gv_fetchpvs("DB::trace", GV_ADDMULTI, SVt_PV)));
3847 sv_setiv(PL_DBtrace, 0);
3848 PL_DBsignal = GvSV((gv_fetchpvs("DB::signal", GV_ADDMULTI, SVt_PV)));
3849 sv_setiv(PL_DBsignal, 0);
3850 PL_curstash = ostash;
3853 #ifndef STRESS_REALLOC
3854 #define REASONABLE(size) (size)
3856 #define REASONABLE(size) (1) /* unreasonable */
3860 Perl_init_stacks(pTHX)
3863 /* start with 128-item stack and 8K cxstack */
3864 PL_curstackinfo = new_stackinfo(REASONABLE(128),
3865 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3866 PL_curstackinfo->si_type = PERLSI_MAIN;
3867 PL_curstack = PL_curstackinfo->si_stack;
3868 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
3870 PL_stack_base = AvARRAY(PL_curstack);
3871 PL_stack_sp = PL_stack_base;
3872 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
3874 Newx(PL_tmps_stack,REASONABLE(128),SV*);
3877 PL_tmps_max = REASONABLE(128);
3879 Newx(PL_markstack,REASONABLE(32),I32);
3880 PL_markstack_ptr = PL_markstack;
3881 PL_markstack_max = PL_markstack + REASONABLE(32);
3885 Newx(PL_scopestack,REASONABLE(32),I32);
3886 PL_scopestack_ix = 0;
3887 PL_scopestack_max = REASONABLE(32);
3889 Newx(PL_savestack,REASONABLE(128),ANY);
3890 PL_savestack_ix = 0;
3891 PL_savestack_max = REASONABLE(128);
3900 while (PL_curstackinfo->si_next)
3901 PL_curstackinfo = PL_curstackinfo->si_next;
3902 while (PL_curstackinfo) {
3903 PERL_SI *p = PL_curstackinfo->si_prev;
3904 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3905 Safefree(PL_curstackinfo->si_cxstack);
3906 Safefree(PL_curstackinfo);
3907 PL_curstackinfo = p;
3909 Safefree(PL_tmps_stack);
3910 Safefree(PL_markstack);
3911 Safefree(PL_scopestack);
3912 Safefree(PL_savestack);
3917 S_init_predump_symbols(pTHX)
3923 sv_setpvs(get_sv("\"", GV_ADD), " ");
3924 PL_ofsgv = (GV*)SvREFCNT_inc(gv_fetchpvs(",", GV_ADD|GV_NOTQUAL, SVt_PV));
3926 PL_stdingv = gv_fetchpvs("STDIN", GV_ADD|GV_NOTQUAL, SVt_PVIO);
3927 GvMULTI_on(PL_stdingv);
3928 io = GvIOp(PL_stdingv);
3929 IoTYPE(io) = IoTYPE_RDONLY;
3930 IoIFP(io) = PerlIO_stdin();
3931 tmpgv = gv_fetchpvs("stdin", GV_ADD|GV_NOTQUAL, SVt_PV);
3933 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
3935 tmpgv = gv_fetchpvs("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
3938 IoTYPE(io) = IoTYPE_WRONLY;
3939 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
3941 tmpgv = gv_fetchpvs("stdout", GV_ADD|GV_NOTQUAL, SVt_PV);
3943 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
3945 PL_stderrgv = gv_fetchpvs("STDERR", GV_ADD|GV_NOTQUAL, SVt_PVIO);
3946 GvMULTI_on(PL_stderrgv);
3947 io = GvIOp(PL_stderrgv);
3948 IoTYPE(io) = IoTYPE_WRONLY;
3949 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
3950 tmpgv = gv_fetchpvs("stderr", GV_ADD|GV_NOTQUAL, SVt_PV);
3952 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
3954 PL_statname = newSV(0); /* last filename we did stat on */
3956 Safefree(PL_osname);
3957 PL_osname = savepv(OSNAME);
3961 Perl_init_argv_symbols(pTHX_ register int argc, register char **argv)
3965 PERL_ARGS_ASSERT_INIT_ARGV_SYMBOLS;
3967 argc--,argv++; /* skip name of script */
3968 if (PL_doswitches) {
3969 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3973 if (argv[0][1] == '-' && !argv[0][2]) {
3977 if ((s = strchr(argv[0], '='))) {
3978 const char *const start_name = argv[0] + 1;
3979 sv_setpv(GvSV(gv_fetchpvn_flags(start_name, s - start_name,
3980 TRUE, SVt_PV)), s + 1);
3983 sv_setiv(GvSV(gv_fetchpv(argv[0]+1, GV_ADD, SVt_PV)),1);
3986 if ((PL_argvgv = gv_fetchpvs("ARGV", GV_ADD|GV_NOTQUAL, SVt_PVAV))) {
3987 GvMULTI_on(PL_argvgv);
3988 (void)gv_AVadd(PL_argvgv);
3989 av_clear(GvAVn(PL_argvgv));
3990 for (; argc > 0; argc--,argv++) {
3991 SV * const sv = newSVpv(argv[0],0);
3992 av_push(GvAVn(PL_argvgv),sv);
3993 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
3994 if (PL_unicode & PERL_UNICODE_ARGV_FLAG)
3997 if (PL_unicode & PERL_UNICODE_WIDESYSCALLS_FLAG) /* Sarathy? */
3998 (void)sv_utf8_decode(sv);
4004 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
4009 PERL_ARGS_ASSERT_INIT_POSTDUMP_SYMBOLS;
4011 PL_toptarget = newSV_type(SVt_PVFM);
4012 sv_setpvs(PL_toptarget, "");
4013 PL_bodytarget = newSV_type(SVt_PVFM);
4014 sv_setpvs(PL_bodytarget, "");
4015 PL_formtarget = PL_bodytarget;
4019 init_argv_symbols(argc,argv);
4021 if ((tmpgv = gv_fetchpvs("0", GV_ADD|GV_NOTQUAL, SVt_PV))) {
4022 #ifdef MACOS_TRADITIONAL
4023 /* $0 is not majick on a Mac */
4024 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
4026 sv_setpv(GvSV(tmpgv),PL_origfilename);
4028 GV * const gv = gv_fetchpv("0", GV_ADD, SVt_PV);
4030 sv_magic(GvSV(gv), MUTABLE_SV(gv), PERL_MAGIC_sv, "0", 1);
4034 if ((PL_envgv = gv_fetchpvs("ENV", GV_ADD|GV_NOTQUAL, SVt_PVHV))) {
4036 bool env_is_not_environ;
4037 GvMULTI_on(PL_envgv);
4038 hv = GvHVn(PL_envgv);
4039 hv_magic(hv, NULL, PERL_MAGIC_env);
4041 #ifdef USE_ENVIRON_ARRAY
4042 /* Note that if the supplied env parameter is actually a copy
4043 of the global environ then it may now point to free'd memory
4044 if the environment has been modified since. To avoid this
4045 problem we treat env==NULL as meaning 'use the default'
4049 env_is_not_environ = env != environ;
4050 if (env_is_not_environ
4051 # ifdef USE_ITHREADS
4052 && PL_curinterp == aTHX
4061 for (; *env; env++) {
4064 if (!(s = strchr(old_var,'=')) || s == old_var)
4067 #if defined(MSDOS) && !defined(DJGPP)
4069 (void)strupr(old_var);
4072 sv = newSVpv(s+1, 0);
4073 (void)hv_store(hv, old_var, s - old_var, sv, 0);
4074 if (env_is_not_environ)
4078 #endif /* USE_ENVIRON_ARRAY */
4079 #endif /* !PERL_MICRO */
4082 if ((tmpgv = gv_fetchpvs("$", GV_ADD|GV_NOTQUAL, SVt_PV))) {
4083 SvREADONLY_off(GvSV(tmpgv));
4084 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
4085 SvREADONLY_on(GvSV(tmpgv));
4087 #ifdef THREADS_HAVE_PIDS
4088 PL_ppid = (IV)getppid();
4091 /* touch @F array to prevent spurious warnings 20020415 MJD */
4093 (void) get_av("main::F", GV_ADD | GV_ADDMULTI);
4098 S_init_perllib(pTHX)
4104 s = PerlEnv_getenv("PERL5LIB");
4106 * It isn't possible to delete an environment variable with
4107 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4108 * case we treat PERL5LIB as undefined if it has a zero-length value.
4110 #if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
4111 if (s && *s != '\0')
4116 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_USE_SEP);
4118 incpush(PerlEnv_getenv("PERLLIB"), INCPUSH_USE_SEP);
4120 /* Treat PERL5?LIB as a possible search list logical name -- the
4121 * "natural" VMS idiom for a Unix path string. We allow each
4122 * element to be a set of |-separated directories for compatibility.
4126 if (my_trnlnm("PERL5LIB",buf,0))
4128 incpush(buf, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS
4130 } while (my_trnlnm("PERL5LIB",buf,++idx));
4132 while (my_trnlnm("PERLLIB",buf,idx++))
4133 incpush(buf, INCPUSH_USE_SEP);
4137 /* Use the ~-expanded versions of APPLLIB (undocumented),
4138 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
4141 incpush(APPLLIB_EXP,
4142 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_USE_SEP
4143 |INCPUSH_CAN_RELOCATE);
4147 incpush(ARCHLIB_EXP, INCPUSH_USE_SEP|INCPUSH_CAN_RELOCATE);
4149 #ifdef MACOS_TRADITIONAL
4152 SV * privdir = newSV(0);
4153 char * macperl = PerlEnv_getenv("MACPERL");
4158 Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl);
4159 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
4160 incpush(SvPVX(privdir), INCPUSH_ADD_SUB_DIRS|INCPUSH_USE_SEP);
4161 Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl);
4162 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
4163 incpush(SvPVX(privdir), INCPUSH_ADD_SUB_DIRS|INCPUSH_USE_SEP);
4165 SvREFCNT_dec(privdir);
4171 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
4174 incpush(PRIVLIB_EXP,
4175 INCPUSH_ADD_SUB_DIRS|INCPUSH_USE_SEP|INCPUSH_CAN_RELOCATE);
4177 incpush(PRIVLIB_EXP, INCPUSH_USE_SEP|INCPUSH_CAN_RELOCATE);
4181 /* sitearch is always relative to sitelib on Windows for
4182 * DLL-based path intuition to work correctly */
4183 # if !defined(WIN32)
4184 incpush(SITEARCH_EXP, INCPUSH_USE_SEP|INCPUSH_CAN_RELOCATE);
4190 /* this picks up sitearch as well */
4191 incpush(SITELIB_EXP,
4192 INCPUSH_ADD_SUB_DIRS|INCPUSH_USE_SEP|INCPUSH_CAN_RELOCATE);
4194 incpush(SITELIB_EXP, INCPUSH_USE_SEP|INCPUSH_CAN_RELOCATE);
4198 #if defined(SITELIB_STEM) && defined(PERL_INC_VERSION_LIST)
4199 /* Search for version-specific dirs below here */
4200 incpush(SITELIB_STEM,
4201 INCPUSH_ADD_OLD_VERS|INCPUSH_USE_SEP|INCPUSH_CAN_RELOCATE);
4204 #ifdef PERL_VENDORARCH_EXP
4205 /* vendorarch is always relative to vendorlib on Windows for
4206 * DLL-based path intuition to work correctly */
4207 # if !defined(WIN32)
4208 incpush(PERL_VENDORARCH_EXP, INCPUSH_USE_SEP|INCPUSH_CAN_RELOCATE);
4212 #ifdef PERL_VENDORLIB_EXP
4214 /* this picks up vendorarch as well */
4215 incpush(PERL_VENDORLIB_EXP,
4216 INCPUSH_ADD_SUB_DIRS|INCPUSH_USE_SEP|INCPUSH_CAN_RELOCATE);
4218 incpush(PERL_VENDORLIB_EXP, INCPUSH_USE_SEP|INCPUSH_CAN_RELOCATE);
4222 #if defined(PERL_VENDORLIB_STEM) && defined(PERL_INC_VERSION_LIST)
4223 /* Search for version-specific dirs below here */
4224 incpush(PERL_VENDORLIB_STEM,
4225 INCPUSH_ADD_OLD_VERS|INCPUSH_USE_SEP|INCPUSH_CAN_RELOCATE);
4228 #ifdef PERL_OTHERLIBDIRS
4229 incpush(PERL_OTHERLIBDIRS, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS
4230 |INCPUSH_USE_SEP|INCPUSH_CAN_RELOCATE);
4235 #endif /* MACOS_TRADITIONAL */
4238 #if defined(DOSISH) || defined(EPOC) || defined(__SYMBIAN32__)
4239 # define PERLLIB_SEP ';'
4242 # define PERLLIB_SEP '|'
4244 # if defined(MACOS_TRADITIONAL)
4245 # define PERLLIB_SEP ','
4247 # define PERLLIB_SEP ':'
4251 #ifndef PERLLIB_MANGLE
4252 # define PERLLIB_MANGLE(s,n) (s)
4255 /* Push a directory onto @INC if it exists.
4256 Generate a new SV if we do this, to save needing to copy the SV we push
4259 S_incpush_if_exists(pTHX_ AV *const av, SV *dir)
4264 PERL_ARGS_ASSERT_INCPUSH_IF_EXISTS;
4266 if (PerlLIO_stat(SvPVX_const(dir), &tmpstatbuf) >= 0 &&
4267 S_ISDIR(tmpstatbuf.st_mode)) {
4275 S_incpush(pTHX_ const char *p, U32 flags)
4278 const U8 addsubdirs = flags & INCPUSH_ADD_SUB_DIRS;
4279 const U8 addoldvers = flags & INCPUSH_ADD_OLD_VERS;
4280 const U8 usesep = flags & INCPUSH_USE_SEP;
4281 const U8 canrelocate = flags & INCPUSH_CAN_RELOCATE;
4282 const U8 unshift = flags & INCPUSH_UNSHIFT;
4289 inc = GvAVn(PL_incgv);
4291 if (addsubdirs || addoldvers) {
4295 /* Break at all separators */
4297 SV *libdir = newSV(0);
4299 /* Change 20189146be79a0596543441fa369c6bf7f85103f, to fix RT#6665,
4300 arranged to unshift #! line -I onto the front of @INC. However,
4301 -I can add version and architecture specific libraries, and they
4302 need to go first. The old code assumed that it was always
4303 pushing. Hence to make it work, need to push the architecture
4304 (etc) libraries onto a temporary array, then "unshift" that onto
4305 the front of @INC. */
4307 = (addsubdirs || addoldvers) ? (unshift ? newAV() : inc) : NULL;
4309 /* skip any consecutive separators */
4311 while ( *p == PERLLIB_SEP ) {
4312 /* Uncomment the next line for PATH semantics */
4313 /* av_push(GvAVn(PL_incgv), newSVpvs(".")); */
4318 if ( usesep && (s = strchr(p, PERLLIB_SEP)) != NULL ) {
4319 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
4324 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
4325 p = NULL; /* break out */
4327 #ifdef MACOS_TRADITIONAL
4328 if (!strchr(SvPVX(libdir), ':')) {
4331 sv_setpv(libdir, MacPerl_CanonDir(SvPVX(libdir), buf, 0));
4333 if (SvPVX(libdir)[SvCUR(libdir)-1] != ':')
4334 sv_catpvs(libdir, ":");
4337 /* Do the if() outside the #ifdef to avoid warnings about an unused
4340 #ifdef PERL_RELOCATABLE_INC
4342 * Relocatable include entries are marked with a leading .../
4345 * 0: Remove that leading ".../"
4346 * 1: Remove trailing executable name (anything after the last '/')
4347 * from the perl path to give a perl prefix
4349 * While the @INC element starts "../" and the prefix ends with a real
4350 * directory (ie not . or ..) chop that real directory off the prefix
4351 * and the leading "../" from the @INC element. ie a logical "../"
4353 * Finally concatenate the prefix and the remainder of the @INC element
4354 * The intent is that /usr/local/bin/perl and .../../lib/perl5
4355 * generates /usr/local/lib/perl5
4357 const char *libpath = SvPVX(libdir);
4358 STRLEN libpath_len = SvCUR(libdir);
4359 if (libpath_len >= 4 && memEQ (libpath, ".../", 4)) {
4361 SV * const caret_X = get_sv("\030", 0);
4362 /* Going to use the SV just as a scratch buffer holding a C
4368 /* $^X is *the* source of taint if tainting is on, hence
4369 SvPOK() won't be true. */
4371 assert(SvPOKp(caret_X));
4372 prefix_sv = newSVpvn_flags(SvPVX(caret_X), SvCUR(caret_X),
4374 /* Firstly take off the leading .../
4375 If all else fail we'll do the paths relative to the current
4377 sv_chop(libdir, libpath + 4);
4378 /* Don't use SvPV as we're intentionally bypassing taining,
4379 mortal copies that the mg_get of tainting creates, and
4380 corruption that seems to come via the save stack.
4381 I guess that the save stack isn't correctly set up yet. */
4382 libpath = SvPVX(libdir);
4383 libpath_len = SvCUR(libdir);
4385 /* This would work more efficiently with memrchr, but as it's
4386 only a GNU extension we'd need to probe for it and
4387 implement our own. Not hard, but maybe not worth it? */
4389 prefix = SvPVX(prefix_sv);
4390 lastslash = strrchr(prefix, '/');
4392 /* First time in with the *lastslash = '\0' we just wipe off
4393 the trailing /perl from (say) /usr/foo/bin/perl
4397 while ((*lastslash = '\0'), /* Do that, come what may. */
4398 (libpath_len >= 3 && memEQ(libpath, "../", 3)
4399 && (lastslash = strrchr(prefix, '/')))) {
4400 if (lastslash[1] == '\0'
4401 || (lastslash[1] == '.'
4402 && (lastslash[2] == '/' /* ends "/." */
4403 || (lastslash[2] == '/'
4404 && lastslash[3] == '/' /* or "/.." */
4406 /* Prefix ends "/" or "/." or "/..", any of which
4407 are fishy, so don't do any more logical cleanup.
4411 /* Remove leading "../" from path */
4414 /* Next iteration round the loop removes the last
4415 directory name from prefix by writing a '\0' in
4416 the while clause. */
4418 /* prefix has been terminated with a '\0' to the correct
4419 length. libpath points somewhere into the libdir SV.
4420 We need to join the 2 with '/' and drop the result into
4422 tempsv = Perl_newSVpvf(aTHX_ "%s/%s", prefix, libpath);
4423 SvREFCNT_dec(libdir);
4424 /* And this is the new libdir. */
4427 (PL_uid != PL_euid || PL_gid != PL_egid)) {
4428 /* Need to taint reloccated paths if running set ID */
4429 SvTAINTED_on(libdir);
4432 SvREFCNT_dec(prefix_sv);
4437 * BEFORE pushing libdir onto @INC we may first push version- and
4438 * archname-specific sub-directories.
4440 if (addsubdirs || addoldvers) {
4441 #ifdef PERL_INC_VERSION_LIST
4442 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
4443 const char * const incverlist[] = { PERL_INC_VERSION_LIST };
4444 const char * const *incver;
4450 if ((unix = tounixspec_ts(SvPV(libdir,len),NULL)) != NULL) {
4452 while (unix[len-1] == '/') len--; /* Cosmetic */
4453 sv_usepvn(libdir,unix,len);
4456 PerlIO_printf(Perl_error_log,
4457 "Failed to unixify @INC element \"%s\"\n",
4461 #ifdef MACOS_TRADITIONAL
4462 #define PERL_AV_SUFFIX_FMT ""
4463 #define PERL_ARCH_FMT "%s:"
4464 #define PERL_ARCH_FMT_PATH PERL_FS_VER_FMT PERL_AV_SUFFIX_FMT
4466 #define PERL_AV_SUFFIX_FMT "/"
4467 #define PERL_ARCH_FMT "/%s"
4468 #define PERL_ARCH_FMT_PATH PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT
4470 /* .../version/archname if -d .../version/archname */
4471 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH PERL_ARCH_FMT,
4473 (int)PERL_REVISION, (int)PERL_VERSION,
4474 (int)PERL_SUBVERSION, ARCHNAME);
4475 subdir = S_incpush_if_exists(aTHX_ av, subdir);
4477 /* .../version if -d .../version */
4478 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH,
4480 (int)PERL_REVISION, (int)PERL_VERSION,
4481 (int)PERL_SUBVERSION);
4482 subdir = S_incpush_if_exists(aTHX_ av, subdir);
4484 /* .../archname if -d .../archname */
4485 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT,
4486 SVfARG(libdir), ARCHNAME);
4487 subdir = S_incpush_if_exists(aTHX_ av, subdir);
4491 #ifdef PERL_INC_VERSION_LIST
4493 for (incver = incverlist; *incver; incver++) {
4494 /* .../xxx if -d .../xxx */
4495 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT,
4496 SVfARG(libdir), *incver);
4497 subdir = S_incpush_if_exists(aTHX_ av, subdir);
4503 /* finally add this lib directory at the end of @INC */
4505 U32 extra = av_len(av) + 1;
4506 av_unshift(inc, extra + 1);
4507 av_store(inc, extra, libdir);
4509 /* av owns a reference, av_store() expects to be donated a
4510 reference, and av expects to be sane when it's cleared.
4511 If I wanted to be naughty and wrong, I could peek inside the
4512 implementation of av_clear(), realise that it uses
4513 SvREFCNT_dec() too, so av's array could be a run of NULLs,
4514 and so directly steal from it (with a memcpy() to inc, and
4515 then memset() to NULL them out. But people copy code from the
4516 core expecting it to be best practise, so let's use the API.
4517 Although studious readers will note that I'm not checking any
4519 av_store(inc, extra, SvREFCNT_inc(*av_fetch(av, extra, FALSE)));
4524 av_push(inc, libdir);
4528 assert (SvREFCNT(subdir) == 1);
4529 SvREFCNT_dec(subdir);
4535 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
4539 volatile const line_t oldline = PL_curcop ? CopLINE(PL_curcop) : 0;
4545 PERL_ARGS_ASSERT_CALL_LIST;
4547 while (av_len(paramList) >= 0) {
4548 cv = MUTABLE_CV(av_shift(paramList));
4550 if (paramList == PL_beginav) {
4551 /* save PL_beginav for compiler */
4552 Perl_av_create_and_push(aTHX_ &PL_beginav_save, MUTABLE_SV(cv));
4554 else if (paramList == PL_checkav) {
4555 /* save PL_checkav for compiler */
4556 Perl_av_create_and_push(aTHX_ &PL_checkav_save, MUTABLE_SV(cv));
4558 else if (paramList == PL_unitcheckav) {
4559 /* save PL_unitcheckav for compiler */
4560 Perl_av_create_and_push(aTHX_ &PL_unitcheckav_save, MUTABLE_SV(cv));
4571 PL_madskills |= 16384;
4576 PL_madskills &= ~16384;
4579 (void)SvPV_const(atsv, len);
4581 PL_curcop = &PL_compiling;
4582 CopLINE_set(PL_curcop, oldline);
4583 if (paramList == PL_beginav)
4584 sv_catpvs(atsv, "BEGIN failed--compilation aborted");
4586 Perl_sv_catpvf(aTHX_ atsv,
4587 "%s failed--call queue aborted",
4588 paramList == PL_checkav ? "CHECK"
4589 : paramList == PL_initav ? "INIT"
4590 : paramList == PL_unitcheckav ? "UNITCHECK"
4592 while (PL_scopestack_ix > oldscope)
4595 Perl_croak(aTHX_ "%"SVf"", SVfARG(atsv));
4602 /* my_exit() was called */
4603 while (PL_scopestack_ix > oldscope)
4606 PL_curstash = PL_defstash;
4607 PL_curcop = &PL_compiling;
4608 CopLINE_set(PL_curcop, oldline);
4610 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
4611 if (paramList == PL_beginav)
4612 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
4614 Perl_croak(aTHX_ "%s failed--call queue aborted",
4615 paramList == PL_checkav ? "CHECK"
4616 : paramList == PL_initav ? "INIT"
4617 : paramList == PL_unitcheckav ? "UNITCHECK"
4624 PL_curcop = &PL_compiling;
4625 CopLINE_set(PL_curcop, oldline);
4628 PerlIO_printf(Perl_error_log, "panic: restartop\n");
4637 Perl_my_exit(pTHX_ U32 status)
4648 STATUS_EXIT_SET(status);
4655 Perl_my_failure_exit(pTHX)
4659 /* We have been called to fall on our sword. The desired exit code
4660 * should be already set in STATUS_UNIX, but could be shifted over
4661 * by 8 bits. STATUS_UNIX_EXIT_SET will handle the cases where a
4664 * If an error code has not been set, then force the issue.
4666 if (MY_POSIX_EXIT) {
4668 /* According to the die_exit.t tests, if errno is non-zero */
4669 /* It should be used for the error status. */
4671 if (errno == EVMSERR) {
4672 STATUS_NATIVE = vaxc$errno;
4675 /* According to die_exit.t tests, if the child_exit code is */
4676 /* also zero, then we need to exit with a code of 255 */
4677 if ((errno != 0) && (errno < 256))
4678 STATUS_UNIX_EXIT_SET(errno);
4679 else if (STATUS_UNIX < 255) {
4680 STATUS_UNIX_EXIT_SET(255);
4685 /* The exit code could have been set by $? or vmsish which
4686 * means that it may not have fatal set. So convert
4687 * success/warning codes to fatal with out changing
4688 * the POSIX status code. The severity makes VMS native
4689 * status handling work, while UNIX mode programs use the
4690 * the POSIX exit codes.
4692 if ((STATUS_NATIVE & (STS$K_SEVERE|STS$K_ERROR)) == 0) {
4693 STATUS_NATIVE &= STS$M_COND_ID;
4694 STATUS_NATIVE |= STS$K_ERROR | STS$M_INHIB_MSG;
4698 /* Traditionally Perl on VMS always expects a Fatal Error. */
4699 if (vaxc$errno & 1) {
4701 /* So force success status to failure */
4702 if (STATUS_NATIVE & 1)
4707 STATUS_UNIX = EINTR; /* In case something cares */
4712 STATUS_NATIVE = vaxc$errno; /* Should already be this */
4714 /* Encode the severity code */
4715 severity = STATUS_NATIVE & STS$M_SEVERITY;
4716 STATUS_UNIX = (severity ? severity : 1) << 8;
4718 /* Perl expects this to be a fatal error */
4719 if (severity != STS$K_SEVERE)
4728 STATUS_UNIX_SET(errno);
4730 exitstatus = STATUS_UNIX >> 8;
4731 if (exitstatus & 255)
4732 STATUS_UNIX_SET(exitstatus);
4734 STATUS_UNIX_SET(255);
4741 S_my_exit_jump(pTHX)
4746 SvREFCNT_dec(PL_e_script);
4750 POPSTACK_TO(PL_mainstack);
4758 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen)
4761 const char * const p = SvPVX_const(PL_e_script);
4762 const char *nl = strchr(p, '\n');
4764 PERL_UNUSED_ARG(idx);
4765 PERL_UNUSED_ARG(maxlen);
4767 nl = (nl) ? nl+1 : SvEND(PL_e_script);
4769 filter_del(read_e_script);
4772 sv_catpvn(buf_sv, p, nl-p);
4773 sv_chop(PL_e_script, nl);
4779 * c-indentation-style: bsd
4781 * indent-tabs-mode: t
4784 * ex: set ts=8 sts=4 sw=4 noet: