4 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
5 * 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
6 * by Larry Wall and others
8 * You may distribute under the terms of either the GNU General Public
9 * License or the Artistic License, as specified in the README file.
14 * A ship then new they built for him
15 * of mithril and of elven-glass
16 * --from Bilbo's song of EƤrendil
18 * [p.236 of _The Lord of the Rings_, II/i: "Many Meetings"]
21 /* This file contains the top-level functions that are used to create, use
22 * and destroy a perl interpreter, plus the functions used by XS code to
23 * call back into perl. Note that it does not contain the actual main()
24 * function of the interpreter; that can be found in perlmain.c
27 #ifdef PERL_IS_MINIPERL
28 # define USE_SITECUSTOMIZE
32 #define PERL_IN_PERL_C
34 #include "patchlevel.h" /* for local_patches */
41 #ifdef USE_KERN_PROC_PATHNAME
42 # include <sys/sysctl.h>
45 #ifdef USE_NSGETEXECUTABLEPATH
46 # include <mach-o/dyld.h>
49 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
56 char control[CMSG_SPACE(sizeof(int))];
73 #if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
74 char *getenv (char *); /* Usually in <stdlib.h> */
77 static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
79 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
80 /* Drop everything. Heck, don't even try to call it */
81 # define validate_suid(validarg, scriptname, fdscript, suidscript, linestr_sv, rsfp) NOOP
83 /* Drop almost everything */
84 # define validate_suid(validarg, scriptname, fdscript, suidscript, linestr_sv, rsfp) S_validate_suid(aTHX_ rsfp)
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);
110 MUTEX_INIT(&PL_my_ctx_mutex);
113 #if defined(USE_ITHREADS)
116 /* This always happens for non-ithreads */
119 PERL_SET_THX(my_perl);
124 /* these implement the PERL_SYS_INIT, PERL_SYS_INIT3, PERL_SYS_TERM macros */
127 Perl_sys_init(int* argc, char*** argv)
131 PERL_ARGS_ASSERT_SYS_INIT;
133 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
134 PERL_UNUSED_ARG(argv);
135 PERL_SYS_INIT_BODY(argc, argv);
139 Perl_sys_init3(int* argc, char*** argv, char*** env)
143 PERL_ARGS_ASSERT_SYS_INIT3;
145 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
146 PERL_UNUSED_ARG(argv);
147 PERL_UNUSED_ARG(env);
148 PERL_SYS_INIT3_BODY(argc, argv, env);
155 if (!PL_veto_cleanup) {
156 PERL_SYS_TERM_BODY();
161 #ifdef PERL_IMPLICIT_SYS
163 perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
164 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
165 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
166 struct IPerlDir* ipD, struct IPerlSock* ipS,
167 struct IPerlProc* ipP)
169 PerlInterpreter *my_perl;
171 PERL_ARGS_ASSERT_PERL_ALLOC_USING;
173 /* Newx() needs interpreter, so call malloc() instead */
174 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
175 S_init_tls_and_interp(my_perl);
176 Zero(my_perl, 1, PerlInterpreter);
186 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
193 =head1 Embedding Functions
195 =for apidoc perl_alloc
197 Allocates a new Perl interpreter. See L<perlembed>.
205 PerlInterpreter *my_perl;
207 /* Newx() needs interpreter, so call malloc() instead */
208 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
210 S_init_tls_and_interp(my_perl);
211 #ifndef PERL_TRACK_MEMPOOL
212 return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter);
214 Zero(my_perl, 1, PerlInterpreter);
215 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
219 #endif /* PERL_IMPLICIT_SYS */
222 =for apidoc perl_construct
224 Initializes a new Perl interpreter. See L<perlembed>.
230 perl_construct(pTHXx)
234 PERL_ARGS_ASSERT_PERL_CONSTRUCT;
238 PL_perl_destruct_level = 1;
240 PERL_UNUSED_ARG(my_perl);
241 if (PL_perl_destruct_level > 0)
244 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
246 /* set read-only and try to insure than we wont see REFCNT==0
249 SvREADONLY_on(&PL_sv_undef);
250 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
252 sv_setpv(&PL_sv_no,PL_No);
253 /* value lookup in void context - happens to have the side effect
254 of caching the numeric forms. However, as &PL_sv_no doesn't contain
255 a string that is a valid numer, we have to turn the public flags by
261 SvREADONLY_on(&PL_sv_no);
262 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
264 sv_setpv(&PL_sv_yes,PL_Yes);
267 SvREADONLY_on(&PL_sv_yes);
268 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
270 SvREADONLY_on(&PL_sv_placeholder);
271 SvREFCNT(&PL_sv_placeholder) = (~(U32)0)/2;
273 PL_sighandlerp = (Sighandler_t) Perl_sighandler;
274 #ifdef PERL_USES_PL_PIDSTATUS
275 PL_pidstatus = newHV();
278 PL_rs = newSVpvs("\n");
288 SET_NUMERIC_STANDARD();
290 #if defined(LOCAL_PATCH_COUNT)
291 PL_localpatches = local_patches; /* For possible -v */
294 #ifdef HAVE_INTERP_INTERN
298 PerlIO_init(aTHX); /* Hook to IO system */
300 PL_fdpid = newAV(); /* for remembering popen pids by fd */
301 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
302 PL_errors = newSVpvs("");
303 sv_setpvs(PERL_DEBUG_PAD(0), ""); /* For regex debugging. */
304 sv_setpvs(PERL_DEBUG_PAD(1), ""); /* ext/re needs these */
305 sv_setpvs(PERL_DEBUG_PAD(2), ""); /* even without DEBUGGING. */
307 /* First entry is a list of empty elements. It needs to be initialised
308 else all hell breaks loose in S_find_uninit_var(). */
309 Perl_av_create_and_push(aTHX_ &PL_regex_padav, newSVpvs(""));
310 PL_regex_pad = AvARRAY(PL_regex_padav);
312 #ifdef USE_REENTRANT_API
313 Perl_reentrant_init(aTHX);
316 /* Note that strtab is a rather special HV. Assumptions are made
317 about not iterating on it, and not adding tie magic to it.
318 It is properly deallocated in perl_destruct() */
321 HvSHAREKEYS_off(PL_strtab); /* mandatory */
322 hv_ksplit(PL_strtab, 512);
324 #if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
325 _dyld_lookup_and_bind
326 ("__environ", (unsigned long *) &environ_pointer, NULL);
330 # ifdef USE_ENVIRON_ARRAY
331 PL_origenviron = environ;
335 /* Use sysconf(_SC_CLK_TCK) if available, if not
336 * available or if the sysconf() fails, use the HZ.
337 * BeOS has those, but returns the wrong value.
338 * The HZ if not originally defined has been by now
339 * been defined as CLK_TCK, if available. */
340 #if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK) && !defined(__BEOS__)
341 PL_clocktick = sysconf(_SC_CLK_TCK);
342 if (PL_clocktick <= 0)
346 PL_stashcache = newHV();
348 PL_patchlevel = newSVpvs("v" PERL_VERSION_STRING);
349 PL_apiversion = newSVpvs("v" PERL_API_VERSION_STRING);
352 if (!PL_mmap_page_size) {
353 #if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
355 SETERRNO(0, SS_NORMAL);
357 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
359 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
361 if ((long) PL_mmap_page_size < 0) {
363 SV * const error = ERRSV;
364 SvUPGRADE(error, SVt_PV);
365 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
368 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
372 # ifdef HAS_GETPAGESIZE
373 PL_mmap_page_size = getpagesize();
375 # if defined(I_SYS_PARAM) && defined(PAGESIZE)
376 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
380 if (PL_mmap_page_size <= 0)
381 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
382 (IV) PL_mmap_page_size);
384 #endif /* HAS_MMAP */
386 #if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
387 PL_timesbase.tms_utime = 0;
388 PL_timesbase.tms_stime = 0;
389 PL_timesbase.tms_cutime = 0;
390 PL_timesbase.tms_cstime = 0;
393 PL_osname = Perl_savepvn(aTHX_ STR_WITH_LEN(OSNAME));
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 assert(PL_scopestack_ix == 1);
543 /* wait for all pseudo-forked children to finish */
544 PERL_WAIT_FOR_CHILDREN;
546 destruct_level = PL_perl_destruct_level;
549 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
551 const int i = atoi(s);
552 if (destruct_level < i)
558 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
564 if (PL_endav && !PL_minus_c) {
565 PERL_SET_PHASE(PERL_PHASE_END);
566 call_list(PL_scopestack_ix, PL_endav);
572 assert(PL_scopestack_ix == 0);
574 /* Need to flush since END blocks can produce output */
577 if (PL_threadhook(aTHX)) {
578 /* Threads hook has vetoed further cleanup */
579 PL_veto_cleanup = TRUE;
583 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
584 if (destruct_level != 0) {
585 /* Fork here to create a child. Our child's job is to preserve the
586 state of scalars prior to destruction, so that we can instruct it
587 to dump any scalars that we later find have leaked.
588 There's no subtlety in this code - it assumes POSIX, and it doesn't
592 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
593 perror("Debug leaking scalars socketpair failed");
599 perror("Debug leaking scalars fork failed");
603 /* We are the child */
604 const int sock = fd[1];
605 const int debug_fd = PerlIO_fileno(Perl_debug_log);
608 /* Our success message is an integer 0, and a char 0 */
609 static const char success[sizeof(int) + 1] = {0};
613 /* We need to close all other file descriptors otherwise we end up
614 with interesting hangs, where the parent closes its end of a
615 pipe, and sits waiting for (another) child to terminate. Only
616 that child never terminates, because it never gets EOF, because
617 we also have the far end of the pipe open. We even need to
618 close the debugging fd, because sometimes it happens to be one
619 end of a pipe, and a process is waiting on the other end for
620 EOF. Normally it would be closed at some point earlier in
621 destruction, but if we happen to cause the pipe to remain open,
622 EOF never occurs, and we get an infinite hang. Hence all the
623 games to pass in a file descriptor if it's actually needed. */
625 f = sysconf(_SC_OPEN_MAX);
627 where = "sysconf failed";
638 union control_un control;
641 struct cmsghdr *cmptr;
645 msg.msg_control = control.control;
646 msg.msg_controllen = sizeof(control.control);
647 /* We're a connected socket so we don't need a source */
651 msg.msg_iovlen = sizeof(vec)/sizeof(vec[0]);
653 vec[0].iov_base = (void*)⌖
654 vec[0].iov_len = sizeof(target);
656 got = recvmsg(sock, &msg, 0);
661 where = "recv failed";
664 if(got < sizeof(target)) {
665 where = "short recv";
669 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
673 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
674 where = "wrong cmsg_len";
677 if(cmptr->cmsg_level != SOL_SOCKET) {
678 where = "wrong cmsg_level";
681 if(cmptr->cmsg_type != SCM_RIGHTS) {
682 where = "wrong cmsg_type";
686 got_fd = *(int*)CMSG_DATA(cmptr);
687 /* For our last little bit of trickery, put the file descriptor
688 back into Perl_debug_log, as if we never actually closed it
690 if(got_fd != debug_fd) {
691 if (dup2(got_fd, debug_fd) == -1) {
698 PerlIO_flush(Perl_debug_log);
700 got = write(sock, &success, sizeof(success));
703 where = "write failed";
706 if(got < sizeof(success)) {
707 where = "short write";
714 int send_errno = errno;
715 unsigned char length = (unsigned char) strlen(where);
716 struct iovec failure[3] = {
717 {(void*)&send_errno, sizeof(send_errno)},
719 {(void*)where, length}
721 int got = writev(sock, failure, 3);
722 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
723 in the parent if we try to read from the socketpair after the
724 child has exited, even if there was data to read.
725 So sleep a bit to give the parent a fighting chance of
728 _exit((got == -1) ? errno : 0);
732 PL_dumper_fd = fd[0];
737 /* We must account for everything. */
739 /* Destroy the main CV and syntax tree */
740 /* Do this now, because destroying ops can cause new SVs to be generated
741 in Perl_pad_swipe, and when running with -DDEBUG_LEAKING_SCALARS they
742 PL_curcop to point to a valid op from which the filename structure
744 PL_curcop = &PL_compiling;
746 /* ensure comppad/curpad to refer to main's pad */
747 if (CvPADLIST(PL_main_cv)) {
748 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
750 op_free(PL_main_root);
753 PL_main_start = NULL;
754 /* note that PL_main_cv isn't usually actually freed at this point,
755 * due to the CvOUTSIDE refs from subs compiled within it. It will
756 * get freed once all the subs are freed in sv_clean_all(), for
757 * destruct_level > 0 */
758 SvREFCNT_dec(PL_main_cv);
760 PERL_SET_PHASE(PERL_PHASE_DESTRUCT);
762 /* Tell PerlIO we are about to tear things apart in case
763 we have layers which are using resources that should
767 PerlIO_destruct(aTHX);
769 if (PL_sv_objcount) {
771 * Try to destruct global references. We do this first so that the
772 * destructors and destructees still exist. Some sv's might remain.
773 * Non-referenced objects are on their own.
779 /* unhook hooks which will soon be, or use, destroyed data */
780 SvREFCNT_dec(PL_warnhook);
782 SvREFCNT_dec(PL_diehook);
785 /* call exit list functions */
786 while (PL_exitlistlen-- > 0)
787 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
789 Safefree(PL_exitlist);
794 SvREFCNT_dec(PL_registered_mros);
796 /* jettison our possibly duplicated environment */
797 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
798 * so we certainly shouldn't free it here
801 #if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
802 if (environ != PL_origenviron && !PL_use_safe_putenv
804 /* only main thread can free environ[0] contents */
805 && PL_curinterp == aTHX
811 for (i = 0; environ[i]; i++)
812 safesysfree(environ[i]);
814 /* Must use safesysfree() when working with environ. */
815 safesysfree(environ);
817 environ = PL_origenviron;
820 #endif /* !PERL_MICRO */
822 if (destruct_level == 0) {
824 DEBUG_P(debprofdump());
826 #if defined(PERLIO_LAYERS)
827 /* No more IO - including error messages ! */
828 PerlIO_cleanup(aTHX);
831 CopFILE_free(&PL_compiling);
832 CopSTASH_free(&PL_compiling);
834 /* The exit() function will do everything that needs doing. */
839 /* the syntax tree is shared between clones
840 * so op_free(PL_main_root) only ReREFCNT_dec's
841 * REGEXPs in the parent interpreter
842 * we need to manually ReREFCNT_dec for the clones
844 SvREFCNT_dec(PL_regex_padav);
845 PL_regex_padav = NULL;
849 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
850 PL_stashcache = NULL;
852 /* loosen bonds of global variables */
854 /* XXX can PL_parser still be non-null here? */
855 if(PL_parser && PL_parser->rsfp) {
856 (void)PerlIO_close(PL_parser->rsfp);
857 PL_parser->rsfp = NULL;
861 Safefree(PL_splitstr);
871 PL_doswitches = FALSE;
872 PL_dowarn = G_WARN_OFF;
873 PL_sawampersand = FALSE; /* must save all match strings */
876 Safefree(PL_inplace);
878 SvREFCNT_dec(PL_patchlevel);
879 SvREFCNT_dec(PL_apiversion);
882 SvREFCNT_dec(PL_e_script);
888 /* magical thingies */
890 SvREFCNT_dec(PL_ofsgv); /* *, */
893 SvREFCNT_dec(PL_ors_sv); /* $\ */
896 SvREFCNT_dec(PL_rs); /* $/ */
899 Safefree(PL_osname); /* $^O */
902 SvREFCNT_dec(PL_statname);
906 /* defgv, aka *_ should be taken care of elsewhere */
909 Safefree(PL_efloatbuf);
913 /* startup and shutdown function lists */
914 SvREFCNT_dec(PL_beginav);
915 SvREFCNT_dec(PL_beginav_save);
916 SvREFCNT_dec(PL_endav);
917 SvREFCNT_dec(PL_checkav);
918 SvREFCNT_dec(PL_checkav_save);
919 SvREFCNT_dec(PL_unitcheckav);
920 SvREFCNT_dec(PL_unitcheckav_save);
921 SvREFCNT_dec(PL_initav);
923 PL_beginav_save = NULL;
926 PL_checkav_save = NULL;
927 PL_unitcheckav = NULL;
928 PL_unitcheckav_save = NULL;
931 /* shortcuts just get cleared */
940 PL_last_in_gv = NULL;
952 SvREFCNT_dec(PL_argvout_stack);
953 PL_argvout_stack = NULL;
955 SvREFCNT_dec(PL_modglobal);
957 SvREFCNT_dec(PL_preambleav);
958 PL_preambleav = NULL;
959 SvREFCNT_dec(PL_subname);
961 #ifdef PERL_USES_PL_PIDSTATUS
962 SvREFCNT_dec(PL_pidstatus);
965 SvREFCNT_dec(PL_toptarget);
967 SvREFCNT_dec(PL_bodytarget);
968 PL_bodytarget = NULL;
969 PL_formtarget = NULL;
971 /* free locale stuff */
972 #ifdef USE_LOCALE_COLLATE
973 Safefree(PL_collation_name);
974 PL_collation_name = NULL;
977 #ifdef USE_LOCALE_NUMERIC
978 Safefree(PL_numeric_name);
979 PL_numeric_name = NULL;
980 SvREFCNT_dec(PL_numeric_radix_sv);
981 PL_numeric_radix_sv = NULL;
984 /* clear utf8 character classes */
985 SvREFCNT_dec(PL_utf8_alnum);
986 SvREFCNT_dec(PL_utf8_alpha);
987 SvREFCNT_dec(PL_utf8_space);
988 SvREFCNT_dec(PL_utf8_graph);
989 SvREFCNT_dec(PL_utf8_digit);
990 SvREFCNT_dec(PL_utf8_upper);
991 SvREFCNT_dec(PL_utf8_lower);
992 SvREFCNT_dec(PL_utf8_print);
993 SvREFCNT_dec(PL_utf8_punct);
994 SvREFCNT_dec(PL_utf8_xdigit);
995 SvREFCNT_dec(PL_utf8_mark);
996 SvREFCNT_dec(PL_utf8_toupper);
997 SvREFCNT_dec(PL_utf8_totitle);
998 SvREFCNT_dec(PL_utf8_tolower);
999 SvREFCNT_dec(PL_utf8_tofold);
1000 SvREFCNT_dec(PL_utf8_idstart);
1001 SvREFCNT_dec(PL_utf8_idcont);
1002 SvREFCNT_dec(PL_utf8_foldclosures);
1003 PL_utf8_alnum = NULL;
1004 PL_utf8_alpha = NULL;
1005 PL_utf8_space = NULL;
1006 PL_utf8_graph = NULL;
1007 PL_utf8_digit = NULL;
1008 PL_utf8_upper = NULL;
1009 PL_utf8_lower = NULL;
1010 PL_utf8_print = NULL;
1011 PL_utf8_punct = NULL;
1012 PL_utf8_xdigit = NULL;
1013 PL_utf8_mark = NULL;
1014 PL_utf8_toupper = NULL;
1015 PL_utf8_totitle = NULL;
1016 PL_utf8_tolower = NULL;
1017 PL_utf8_tofold = NULL;
1018 PL_utf8_idstart = NULL;
1019 PL_utf8_idcont = NULL;
1020 PL_utf8_foldclosures = NULL;
1022 if (!specialWARN(PL_compiling.cop_warnings))
1023 PerlMemShared_free(PL_compiling.cop_warnings);
1024 PL_compiling.cop_warnings = NULL;
1025 cophh_free(CopHINTHASH_get(&PL_compiling));
1026 CopHINTHASH_set(&PL_compiling, cophh_new_empty());
1027 CopFILE_free(&PL_compiling);
1028 CopSTASH_free(&PL_compiling);
1030 /* Prepare to destruct main symbol table. */
1033 /* break ref loop *:: <=> %:: */
1034 (void)hv_delete(hv, "main::", 6, G_DISCARD);
1037 SvREFCNT_dec(PL_curstname);
1038 PL_curstname = NULL;
1040 /* clear queued errors */
1041 SvREFCNT_dec(PL_errors);
1044 SvREFCNT_dec(PL_isarev);
1047 if (destruct_level >= 2) {
1048 if (PL_scopestack_ix != 0)
1049 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1050 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1051 (long)PL_scopestack_ix);
1052 if (PL_savestack_ix != 0)
1053 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1054 "Unbalanced saves: %ld more saves than restores\n",
1055 (long)PL_savestack_ix);
1056 if (PL_tmps_floor != -1)
1057 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1058 (long)PL_tmps_floor + 1);
1059 if (cxstack_ix != -1)
1060 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1061 (long)cxstack_ix + 1);
1064 #ifdef PERL_IMPLICIT_CONTEXT
1065 /* the entries in this list are allocated via SV PVX's, so get freed
1066 * in sv_clean_all */
1067 Safefree(PL_my_cxt_list);
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;
1117 SvREFCNT_dec(PL_strtab);
1120 /* free the pointer tables used for cloning */
1121 ptr_table_free(PL_ptr_table);
1122 PL_ptr_table = (PTR_TBL_t*)NULL;
1125 /* free special SVs */
1127 SvREFCNT(&PL_sv_yes) = 0;
1128 sv_clear(&PL_sv_yes);
1129 SvANY(&PL_sv_yes) = NULL;
1130 SvFLAGS(&PL_sv_yes) = 0;
1132 SvREFCNT(&PL_sv_no) = 0;
1133 sv_clear(&PL_sv_no);
1134 SvANY(&PL_sv_no) = NULL;
1135 SvFLAGS(&PL_sv_no) = 0;
1139 for (i=0; i<=2; i++) {
1140 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1141 sv_clear(PERL_DEBUG_PAD(i));
1142 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1143 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1147 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
1148 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
1150 #ifdef DEBUG_LEAKING_SCALARS
1151 if (PL_sv_count != 0) {
1156 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
1157 svend = &sva[SvREFCNT(sva)];
1158 for (sv = sva + 1; sv < svend; ++sv) {
1159 if (SvTYPE(sv) != (svtype)SVTYPEMASK) {
1160 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
1162 " refcnt=%"UVuf pTHX__FORMAT "\n"
1163 "\tallocated at %s:%d %s %s (parent 0x%"UVxf");"
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 PTR2UV(sv->sv_debug_parent),
1175 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1176 Perl_dump_sv_child(aTHX_ sv);
1182 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1186 /* Wait for up to 4 seconds for child to terminate.
1187 This seems to be the least effort way of timing out on reaping
1189 struct timeval waitfor = {4, 0};
1190 int sock = PL_dumper_fd;
1194 FD_SET(sock, &rset);
1195 select(sock + 1, &rset, NULL, NULL, &waitfor);
1196 waitpid(child, &status, WNOHANG);
1201 #ifdef DEBUG_LEAKING_SCALARS_ABORT
1207 #ifdef PERL_DEBUG_READONLY_OPS
1213 #if defined(PERLIO_LAYERS)
1214 /* No more IO - including error messages ! */
1215 PerlIO_cleanup(aTHX);
1218 /* sv_undef needs to stay immortal until after PerlIO_cleanup
1219 as currently layers use it rather than NULL as a marker
1220 for no arg - and will try and SvREFCNT_dec it.
1222 SvREFCNT(&PL_sv_undef) = 0;
1223 SvREADONLY_off(&PL_sv_undef);
1225 Safefree(PL_origfilename);
1226 PL_origfilename = NULL;
1227 Safefree(PL_reg_start_tmp);
1228 PL_reg_start_tmp = (char**)NULL;
1229 PL_reg_start_tmpl = 0;
1230 Safefree(PL_reg_curpm);
1231 Safefree(PL_reg_poscache);
1232 free_tied_hv_pool();
1233 Safefree(PL_op_mask);
1234 Safefree(PL_psig_name);
1235 PL_psig_name = (SV**)NULL;
1236 PL_psig_ptr = (SV**)NULL;
1238 /* We need to NULL PL_psig_pend first, so that
1239 signal handlers know not to use it */
1240 int *psig_save = PL_psig_pend;
1241 PL_psig_pend = (int*)NULL;
1242 Safefree(psig_save);
1246 PL_tainting = FALSE;
1247 PL_taint_warn = FALSE;
1248 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
1251 DEBUG_P(debprofdump());
1253 #ifdef USE_REENTRANT_API
1254 Perl_reentrant_free(aTHX);
1259 while (PL_regmatch_slab) {
1260 regmatch_slab *s = PL_regmatch_slab;
1261 PL_regmatch_slab = PL_regmatch_slab->next;
1265 /* As the absolutely last thing, free the non-arena SV for mess() */
1268 /* we know that type == SVt_PVMG */
1270 /* it could have accumulated taint magic */
1273 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1274 moremagic = mg->mg_moremagic;
1275 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1277 Safefree(mg->mg_ptr);
1281 /* we know that type >= SVt_PV */
1282 SvPV_free(PL_mess_sv);
1283 Safefree(SvANY(PL_mess_sv));
1284 Safefree(PL_mess_sv);
1291 =for apidoc perl_free
1293 Releases a Perl interpreter. See L<perlembed>.
1303 PERL_ARGS_ASSERT_PERL_FREE;
1305 if (PL_veto_cleanup)
1308 #ifdef PERL_TRACK_MEMPOOL
1311 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1312 * value as we're probably hunting memory leaks then
1314 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
1315 if (!s || atoi(s) == 0) {
1316 const U32 old_debug = PL_debug;
1317 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1318 thread at thread exit. */
1320 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1321 "free this thread's memory\n");
1322 PL_debug &= ~ DEBUG_m_FLAG;
1324 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
1325 safesysfree(sTHX + (char *)(aTHXx->Imemory_debug_header.next));
1326 PL_debug = old_debug;
1331 #if defined(WIN32) || defined(NETWARE)
1332 # if defined(PERL_IMPLICIT_SYS)
1335 void *host = nw_internal_host;
1337 void *host = w32_internal_host;
1339 PerlMem_free(aTHXx);
1341 nw_delete_internal_host(host);
1343 win32_delete_internal_host(host);
1347 PerlMem_free(aTHXx);
1350 PerlMem_free(aTHXx);
1354 #if defined(USE_ITHREADS)
1355 /* provide destructors to clean up the thread key when libperl is unloaded */
1356 #ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1358 #if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
1359 #pragma fini "perl_fini"
1360 #elif defined(__sun) && !defined(__GNUC__)
1361 #pragma fini (perl_fini)
1365 #if defined(__GNUC__)
1366 __attribute__((destructor))
1371 if (PL_curinterp && !PL_veto_cleanup)
1376 #endif /* THREADS */
1379 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
1382 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1383 PL_exitlist[PL_exitlistlen].fn = fn;
1384 PL_exitlist[PL_exitlistlen].ptr = ptr;
1389 S_set_caret_X(pTHX) {
1391 GV* tmpgv = gv_fetchpvs("\030", GV_ADD|GV_NOTQUAL, SVt_PV); /* $^X */
1393 SV *const caret_x = GvSV(tmpgv);
1395 sv_setpv(caret_x, os2_execname(aTHX));
1397 # ifdef USE_KERN_PROC_PATHNAME
1402 mib[2] = KERN_PROC_PATHNAME;
1405 if (sysctl(mib, 4, NULL, &size, NULL, 0) == 0
1406 && size > 0 && size < MAXPATHLEN * MAXPATHLEN) {
1407 sv_grow(caret_x, size);
1409 if (sysctl(mib, 4, SvPVX(caret_x), &size, NULL, 0) == 0
1411 SvPOK_only(caret_x);
1412 SvCUR_set(caret_x, size - 1);
1417 # elif defined(USE_NSGETEXECUTABLEPATH)
1419 uint32_t size = sizeof(buf);
1422 _NSGetExecutablePath(buf, &size);
1423 if (size < MAXPATHLEN * MAXPATHLEN) {
1424 sv_grow(caret_x, size);
1425 if (_NSGetExecutablePath(SvPVX(caret_x), &size) == 0) {
1426 char *const tidied = realpath(SvPVX(caret_x), NULL);
1428 sv_setpv(caret_x, tidied);
1431 SvPOK_only(caret_x);
1432 SvCUR_set(caret_x, size);
1437 # elif defined(HAS_PROCSELFEXE)
1438 char buf[MAXPATHLEN];
1439 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1441 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1442 includes a spurious NUL which will cause $^X to fail in system
1443 or backticks (this will prevent extensions from being built and
1444 many tests from working). readlink is not meant to add a NUL.
1445 Normal readlink works fine.
1447 if (len > 0 && buf[len-1] == '\0') {
1451 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1452 returning the text "unknown" from the readlink rather than the path
1453 to the executable (or returning an error from the readlink). Any
1454 valid path has a '/' in it somewhere, so use that to validate the
1455 result. See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1457 if (len > 0 && memchr(buf, '/', len)) {
1458 sv_setpvn(caret_x, buf, len);
1462 /* Fallback to this: */
1463 sv_setpv(caret_x, PL_origargv[0]);
1469 =for apidoc perl_parse
1471 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1477 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
1484 PERL_ARGS_ASSERT_PERL_PARSE;
1485 #ifndef MULTIPLICITY
1486 PERL_UNUSED_ARG(my_perl);
1489 #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
1490 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
1491 * This MUST be done before any hash stores or fetches take place.
1492 * If you set PL_rehash_seed (and presumably also PL_rehash_seed_set)
1493 * yourself, it is your responsibility to provide a good random seed!
1494 * You can also define PERL_HASH_SEED in compile time, see hv.h. */
1495 if (!PL_rehash_seed_set)
1496 PL_rehash_seed = get_hash_seed();
1498 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
1500 if (s && (atoi(s) == 1))
1501 PerlIO_printf(Perl_debug_log, "HASH_SEED = %"UVuf"\n", PL_rehash_seed);
1503 #endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1508 if (PL_origalen != 0) {
1509 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1512 /* Set PL_origalen be the sum of the contiguous argv[]
1513 * elements plus the size of the env in case that it is
1514 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
1515 * as the maximum modifiable length of $0. In the worst case
1516 * the area we are able to modify is limited to the size of
1517 * the original argv[0]. (See below for 'contiguous', though.)
1519 const char *s = NULL;
1522 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
1523 /* Do the mask check only if the args seem like aligned. */
1525 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1527 /* See if all the arguments are contiguous in memory. Note
1528 * that 'contiguous' is a loose term because some platforms
1529 * align the argv[] and the envp[]. If the arguments look
1530 * like non-aligned, assume that they are 'strictly' or
1531 * 'traditionally' contiguous. If the arguments look like
1532 * aligned, we just check that they are within aligned
1533 * PTRSIZE bytes. As long as no system has something bizarre
1534 * like the argv[] interleaved with some other data, we are
1535 * fine. (Did I just evoke Murphy's Law?) --jhi */
1536 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1538 for (i = 1; i < PL_origargc; i++) {
1539 if ((PL_origargv[i] == s + 1
1541 || PL_origargv[i] == s + 2
1546 (PL_origargv[i] > s &&
1548 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1559 #ifndef PERL_USE_SAFE_PUTENV
1560 /* Can we grab env area too to be used as the area for $0? */
1561 if (s && PL_origenviron && !PL_use_safe_putenv) {
1562 if ((PL_origenviron[0] == s + 1)
1565 (PL_origenviron[0] > s &&
1566 PL_origenviron[0] <=
1567 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1570 #ifndef OS2 /* ENVIRON is read by the kernel too. */
1571 s = PL_origenviron[0];
1574 my_setenv("NoNe SuCh", NULL);
1575 /* Force copy of environment. */
1576 for (i = 1; PL_origenviron[i]; i++) {
1577 if (PL_origenviron[i] == s + 1
1580 (PL_origenviron[i] > s &&
1581 PL_origenviron[i] <=
1582 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1585 s = PL_origenviron[i];
1593 #endif /* !defined(PERL_USE_SAFE_PUTENV) */
1595 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
1600 /* Come here if running an undumped a.out. */
1602 PL_origfilename = savepv(argv[0]);
1603 PL_do_undump = FALSE;
1604 cxstack_ix = -1; /* start label stack again */
1606 assert (!PL_tainted);
1608 S_set_caret_X(aTHX);
1610 init_postdump_symbols(argc,argv,env);
1615 op_free(PL_main_root);
1616 PL_main_root = NULL;
1618 PL_main_start = NULL;
1619 SvREFCNT_dec(PL_main_cv);
1623 oldscope = PL_scopestack_ix;
1624 PL_dowarn = G_WARN_OFF;
1629 parse_body(env,xsinit);
1630 if (PL_unitcheckav) {
1631 call_list(oldscope, PL_unitcheckav);
1634 PERL_SET_PHASE(PERL_PHASE_CHECK);
1635 call_list(oldscope, PL_checkav);
1643 /* my_exit() was called */
1644 while (PL_scopestack_ix > oldscope)
1647 PL_curstash = PL_defstash;
1648 if (PL_unitcheckav) {
1649 call_list(oldscope, PL_unitcheckav);
1652 PERL_SET_PHASE(PERL_PHASE_CHECK);
1653 call_list(oldscope, PL_checkav);
1658 PerlIO_printf(Perl_error_log, "panic: top_env\n");
1666 /* This needs to stay in perl.c, as perl.c is compiled with different flags for
1667 miniperl, and we need to see those flags reflected in the values here. */
1669 /* What this returns is subject to change. Use the public interface in Config.
1672 S_Internals_V(pTHX_ CV *cv)
1675 #ifdef LOCAL_PATCH_COUNT
1676 const int local_patch_count = LOCAL_PATCH_COUNT;
1678 const int local_patch_count = 0;
1680 const int entries = 3 + local_patch_count;
1682 static char non_bincompat_options[] =
1686 # ifdef HOMEGROWN_POSIX_SIGNALS
1687 " HOMEGROWN_POSIX_SIGNALS"
1692 # ifdef PERL_DISABLE_PMC
1695 # ifdef PERL_DONT_CREATE_GVSV
1696 " PERL_DONT_CREATE_GVSV"
1698 # ifdef PERL_EXTERNAL_GLOB
1699 " PERL_EXTERNAL_GLOB"
1701 # ifdef PERL_IS_MINIPERL
1704 # ifdef PERL_MALLOC_WRAP
1707 # ifdef PERL_MEM_LOG
1710 # ifdef PERL_MEM_LOG_NOIMPL
1711 " PERL_MEM_LOG_NOIMPL"
1713 # ifdef PERL_PRESERVE_IVUV
1714 " PERL_PRESERVE_IVUV"
1716 # ifdef PERL_USE_DEVEL
1719 # ifdef PERL_USE_SAFE_PUTENV
1720 " PERL_USE_SAFE_PUTENV"
1722 # ifdef UNLINK_ALL_VERSIONS
1723 " UNLINK_ALL_VERSIONS"
1725 # ifdef USE_ATTRIBUTES_FOR_PERLIO
1726 " USE_ATTRIBUTES_FOR_PERLIO"
1728 # ifdef USE_FAST_STDIO
1734 # ifdef USE_LOCALE_CTYPE
1737 # ifdef USE_PERL_ATOF
1740 # ifdef USE_SITECUSTOMIZE
1741 " USE_SITECUSTOMIZE"
1744 PERL_UNUSED_ARG(cv);
1745 PERL_UNUSED_ARG(items);
1747 EXTEND(SP, entries);
1749 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1750 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1751 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1755 PUSHs(Perl_newSVpvn_flags(aTHX_
1756 STR_WITH_LEN("Compiled at " __DATE__ " " __TIME__),
1759 PUSHs(Perl_newSVpvn_flags(aTHX_ STR_WITH_LEN("Compiled on " __DATE__),
1763 PUSHs(&PL_sv_undef);
1766 for (i = 1; i <= local_patch_count; i++) {
1767 /* This will be an undef, if PL_localpatches[i] is NULL. */
1768 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1774 #define INCPUSH_UNSHIFT 0x01
1775 #define INCPUSH_ADD_OLD_VERS 0x02
1776 #define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1777 #define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1778 #define INCPUSH_NOT_BASEDIR 0x10
1779 #define INCPUSH_CAN_RELOCATE 0x20
1780 #define INCPUSH_ADD_SUB_DIRS \
1781 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
1784 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
1788 int argc = PL_origargc;
1789 char **argv = PL_origargv;
1790 const char *scriptname = NULL;
1791 VOL bool dosearch = FALSE;
1793 bool doextract = FALSE;
1794 const char *cddir = NULL;
1795 #ifdef USE_SITECUSTOMIZE
1796 bool minus_f = FALSE;
1798 SV *linestr_sv = newSV_type(SVt_PVIV);
1799 bool add_read_e_script = FALSE;
1801 PERL_SET_PHASE(PERL_PHASE_START);
1803 SvGROW(linestr_sv, 80);
1804 sv_setpvs(linestr_sv,"");
1810 for (argc--,argv++; argc > 0; argc--,argv++) {
1811 if (argv[0][0] != '-' || !argv[0][1])
1817 #ifndef PERL_STRICT_CR
1841 if ((s = moreswitches(s)))
1846 CHECK_MALLOC_TOO_LATE_FOR('t');
1847 if( !PL_tainting ) {
1848 PL_taint_warn = TRUE;
1854 CHECK_MALLOC_TOO_LATE_FOR('T');
1856 PL_taint_warn = FALSE;
1864 forbid_setid('e', FALSE);
1866 PL_e_script = newSVpvs("");
1867 add_read_e_script = TRUE;
1870 sv_catpv(PL_e_script, s);
1872 sv_catpv(PL_e_script, argv[1]);
1876 Perl_croak(aTHX_ "No code specified for -%c", c);
1877 sv_catpvs(PL_e_script, "\n");
1881 #ifdef USE_SITECUSTOMIZE
1887 case 'I': /* -I handled both here and in moreswitches() */
1888 forbid_setid('I', FALSE);
1889 if (!*++s && (s=argv[1]) != NULL) {
1893 STRLEN len = strlen(s);
1894 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
1897 Perl_croak(aTHX_ "No directory specified for -I");
1900 forbid_setid('S', FALSE);
1909 opts_prog = newSVpvs("use Config; Config::_V()");
1913 opts_prog = Perl_newSVpvf(aTHX_
1914 "use Config; Config::config_vars(qw%c%s%c)",
1918 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
1919 /* don't look for script or read stdin */
1920 scriptname = BIT_BUCKET;
1932 if (!*++s || isSPACE(*s)) {
1936 /* catch use of gnu style long options */
1937 if (strEQ(s, "version")) {
1941 if (strEQ(s, "help")) {
1948 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1959 #ifndef SECURE_INTERNAL_GETENV
1962 (s = PerlEnv_getenv("PERL5OPT")))
1966 if (*s == '-' && *(s+1) == 'T') {
1967 CHECK_MALLOC_TOO_LATE_FOR('T');
1969 PL_taint_warn = FALSE;
1972 char *popt_copy = NULL;
1985 if (!strchr("CDIMUdmtwW", *s))
1986 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
1990 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
1991 s = popt_copy + (s - d);
1999 if( !PL_tainting ) {
2000 PL_taint_warn = TRUE;
2011 #if defined(USE_SITECUSTOMIZE)
2013 /* The games with local $! are to avoid setting errno if there is no
2014 sitecustomize script. */
2015 # ifdef PERL_IS_MINIPERL
2016 AV *const inc = GvAV(PL_incgv);
2017 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
2020 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2022 "BEGIN { do {local $!; -f '%"SVf"/buildcustomize.pl'} && do '%"SVf"/buildcustomize.pl' }", *inc0, *inc0));
2025 /* SITELIB_EXP is a function call on Win32. */
2026 const char *const sitelib = SITELIB_EXP;
2027 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2029 "BEGIN { do {local $!; -f '%s/sitecustomize.pl'} && do '%s/sitecustomize.pl' }", sitelib, sitelib));
2035 scriptname = argv[0];
2038 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2040 else if (scriptname == NULL) {
2042 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
2048 /* Set $^X early so that it can be used for relocatable paths in @INC */
2049 assert (!PL_tainted);
2051 S_set_caret_X(aTHX);
2056 bool suidscript = FALSE;
2058 open_script(scriptname, dosearch, &suidscript, &rsfp);
2060 validate_suid(validarg, scriptname, fdscript, suidscript,
2064 # if defined(SIGCHLD) || defined(SIGCLD)
2067 # define SIGCHLD SIGCLD
2069 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2070 if (sigstate == (Sighandler_t) SIG_IGN) {
2071 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2072 "Can't ignore signal CHLD, forcing to default");
2073 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2081 /* This will croak if suidscript is true, as -x cannot be used with
2083 forbid_setid('x', suidscript);
2084 /* Hence you can't get here if suidscript is true */
2086 find_beginning(linestr_sv, rsfp);
2087 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2088 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2092 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
2093 CvUNIQUE_on(PL_compcv);
2095 CvPADLIST(PL_compcv) = pad_new(0);
2097 PL_isarev = newHV();
2100 boot_core_UNIVERSAL();
2102 newXS("Internals::V", S_Internals_V, __FILE__);
2105 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
2107 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC) || defined(SYMBIAN)
2113 # ifdef HAS_SOCKS5_INIT
2114 socks5_init(argv[0]);
2120 init_predump_symbols();
2121 /* init_postdump_symbols not currently designed to be called */
2122 /* more than once (ENV isn't cleared first, for example) */
2123 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
2125 init_postdump_symbols(argc,argv,env);
2127 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2128 * or explicitly in some platforms.
2129 * locale.c:Perl_init_i18nl10n() if the environment
2130 * look like the user wants to use UTF-8. */
2131 #if defined(__SYMBIAN32__)
2132 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2134 # ifndef PERL_IS_MINIPERL
2136 /* Requires init_predump_symbols(). */
2137 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
2142 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
2143 * and the default open disciplines. */
2144 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2145 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2147 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2148 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2149 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2151 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2152 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2153 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2155 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2156 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
2157 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2159 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2160 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2163 sv_setpvs(sv, ":utf8\0:utf8");
2165 sv_setpvs(sv, ":utf8\0");
2168 sv_setpvs(sv, "\0:utf8");
2177 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2178 if (strEQ(s, "unsafe"))
2179 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2180 else if (strEQ(s, "safe"))
2181 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2183 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2190 if ((s = PerlEnv_getenv("PERL_XMLDUMP"))) {
2194 PL_xmlfp = PerlIO_stdout();
2196 PL_xmlfp = PerlIO_open(s, "w");
2198 Perl_croak(aTHX_ "Can't open %s", s);
2200 my_setenv("PERL_XMLDUMP", NULL); /* hide from subprocs */
2206 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2207 PL_madskills = atoi(s);
2208 my_setenv("PERL_MADSKILLS", NULL); /* hide from subprocs */
2213 lex_start(linestr_sv, rsfp, 0);
2214 PL_subname = newSVpvs("main");
2216 if (add_read_e_script)
2217 filter_add(read_e_script, NULL);
2219 /* now parse the script */
2221 SETERRNO(0,SS_NORMAL);
2222 if (yyparse(GRAMPROG) || PL_parser->error_count) {
2224 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
2226 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
2230 CopLINE_set(PL_curcop, 0);
2231 PL_curstash = PL_defstash;
2233 SvREFCNT_dec(PL_e_script);
2241 SAVECOPFILE(PL_curcop);
2242 SAVECOPLINE(PL_curcop);
2243 gv_check(PL_defstash);
2252 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2253 dump_mstats("after compilation:");
2258 PL_restartjmpenv = NULL;
2264 =for apidoc perl_run
2266 Tells a Perl interpreter to run. See L<perlembed>.
2279 PERL_ARGS_ASSERT_PERL_RUN;
2280 #ifndef MULTIPLICITY
2281 PERL_UNUSED_ARG(my_perl);
2284 oldscope = PL_scopestack_ix;
2292 cxstack_ix = -1; /* start context stack again */
2294 case 0: /* normal completion */
2298 case 2: /* my_exit() */
2299 while (PL_scopestack_ix > oldscope)
2302 PL_curstash = PL_defstash;
2303 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
2304 PL_endav && !PL_minus_c) {
2305 PERL_SET_PHASE(PERL_PHASE_END);
2306 call_list(oldscope, PL_endav);
2309 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2310 dump_mstats("after execution: ");
2316 POPSTACK_TO(PL_mainstack);
2319 PerlIO_printf(Perl_error_log, "panic: restartop\n");
2330 S_run_body(pTHX_ I32 oldscope)
2333 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
2334 PL_sawampersand ? "Enabling" : "Omitting"));
2336 if (!PL_restartop) {
2340 exit(0); /* less likely to core dump than my_exit(0) */
2344 if (DEBUG_x_TEST || DEBUG_B_TEST)
2345 dump_all_perl(!DEBUG_B_TEST);
2347 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
2351 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
2354 if (PERLDB_SINGLE && PL_DBsingle)
2355 sv_setiv(PL_DBsingle, 1);
2357 PERL_SET_PHASE(PERL_PHASE_INIT);
2358 call_list(oldscope, PL_initav);
2360 #ifdef PERL_DEBUG_READONLY_OPS
2361 Perl_pending_Slabs_to_ro(aTHX);
2367 PERL_SET_PHASE(PERL_PHASE_RUN);
2370 PL_restartjmpenv = NULL;
2371 PL_op = PL_restartop;
2375 else if (PL_main_start) {
2376 CvDEPTH(PL_main_cv) = 1;
2377 PL_op = PL_main_start;
2385 =head1 SV Manipulation Functions
2387 =for apidoc p||get_sv
2389 Returns the SV of the specified Perl scalar. C<flags> are passed to
2390 C<gv_fetchpv>. If C<GV_ADD> is set and the
2391 Perl variable does not exist then it will be created. If C<flags> is zero
2392 and the variable does not exist then NULL is returned.
2398 Perl_get_sv(pTHX_ const char *name, I32 flags)
2402 PERL_ARGS_ASSERT_GET_SV;
2404 gv = gv_fetchpv(name, flags, SVt_PV);
2411 =head1 Array Manipulation Functions
2413 =for apidoc p||get_av
2415 Returns the AV of the specified Perl global or package array with the given
2416 name (so it won't work on lexical variables). C<flags> are passed
2417 to C<gv_fetchpv>. If C<GV_ADD> is set and the
2418 Perl variable does not exist then it will be created. If C<flags> is zero
2419 and the variable does not exist then NULL is returned.
2421 Perl equivalent: C<@{"$name"}>.
2427 Perl_get_av(pTHX_ const char *name, I32 flags)
2429 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
2431 PERL_ARGS_ASSERT_GET_AV;
2441 =head1 Hash Manipulation Functions
2443 =for apidoc p||get_hv
2445 Returns the HV of the specified Perl hash. C<flags> are passed to
2446 C<gv_fetchpv>. If C<GV_ADD> is set and the
2447 Perl variable does not exist then it will be created. If C<flags> is zero
2448 and the variable does not exist then NULL is returned.
2454 Perl_get_hv(pTHX_ const char *name, I32 flags)
2456 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
2458 PERL_ARGS_ASSERT_GET_HV;
2468 =head1 CV Manipulation Functions
2470 =for apidoc p||get_cvn_flags
2472 Returns the CV of the specified Perl subroutine. C<flags> are passed to
2473 C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2474 exist then it will be declared (which has the same effect as saying
2475 C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2476 then NULL is returned.
2478 =for apidoc p||get_cv
2480 Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
2486 Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
2488 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
2489 /* XXX this is probably not what they think they're getting.
2490 * It has the same effect as "sub name;", i.e. just a forward
2493 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2495 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
2496 SV *const sv = newSVpvn_flags(name, len, flags & SVf_UTF8);
2497 return newSUB(start_subparse(FALSE, 0),
2498 newSVOP(OP_CONST, 0, sv),
2506 /* Nothing in core calls this now, but we can't replace it with a macro and
2507 move it to mathoms.c as a macro would evaluate name twice. */
2509 Perl_get_cv(pTHX_ const char *name, I32 flags)
2511 PERL_ARGS_ASSERT_GET_CV;
2513 return get_cvn_flags(name, strlen(name), flags);
2516 /* Be sure to refetch the stack pointer after calling these routines. */
2520 =head1 Callback Functions
2522 =for apidoc p||call_argv
2524 Performs a callback to the specified named and package-scoped Perl subroutine
2525 with C<argv> (a NULL-terminated array of strings) as arguments. See L<perlcall>.
2527 Approximate Perl equivalent: C<&{"$sub_name"}(@$argv)>.
2533 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
2535 /* See G_* flags in cop.h */
2536 /* null terminated arg list */
2541 PERL_ARGS_ASSERT_CALL_ARGV;
2546 mXPUSHs(newSVpv(*argv,0));
2551 return call_pv(sub_name, flags);
2555 =for apidoc p||call_pv
2557 Performs a callback to the specified Perl sub. See L<perlcall>.
2563 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
2564 /* name of the subroutine */
2565 /* See G_* flags in cop.h */
2567 PERL_ARGS_ASSERT_CALL_PV;
2569 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
2573 =for apidoc p||call_method
2575 Performs a callback to the specified Perl method. The blessed object must
2576 be on the stack. See L<perlcall>.
2582 Perl_call_method(pTHX_ const char *methname, I32 flags)
2583 /* name of the subroutine */
2584 /* See G_* flags in cop.h */
2587 PERL_ARGS_ASSERT_CALL_METHOD;
2589 len = strlen(methname);
2591 /* XXX: sv_2mortal(newSVpvn_share(methname, len)) can be faster */
2592 return call_sv(newSVpvn_flags(methname, len, SVs_TEMP), flags | G_METHOD);
2595 /* May be called with any of a CV, a GV, or an SV containing the name. */
2597 =for apidoc p||call_sv
2599 Performs a callback to the Perl sub whose name is in the SV. See
2606 Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
2607 /* See G_* flags in cop.h */
2610 LOGOP myop; /* fake syntax tree node */
2615 bool oldcatch = CATCH_GET;
2617 OP* const oldop = PL_op;
2620 PERL_ARGS_ASSERT_CALL_SV;
2622 if (flags & G_DISCARD) {
2626 if (!(flags & G_WANT)) {
2627 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2632 Zero(&myop, 1, LOGOP);
2633 myop.op_next = NULL;
2634 if (!(flags & G_NOARGS))
2635 myop.op_flags |= OPf_STACKED;
2636 myop.op_flags |= OP_GIMME_REVERSE(flags);
2640 EXTEND(PL_stack_sp, 1);
2641 *++PL_stack_sp = sv;
2643 oldscope = PL_scopestack_ix;
2645 if (PERLDB_SUB && PL_curstash != PL_debstash
2646 /* Handle first BEGIN of -d. */
2647 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
2648 /* Try harder, since this may have been a sighandler, thus
2649 * curstash may be meaningless. */
2650 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
2651 && !(flags & G_NODEBUG))
2652 PL_op->op_private |= OPpENTERSUB_DB;
2654 if (flags & G_METHOD) {
2655 Zero(&method_op, 1, UNOP);
2656 method_op.op_next = PL_op;
2657 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2658 method_op.op_type = OP_METHOD;
2659 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
2660 myop.op_type = OP_ENTERSUB;
2661 PL_op = (OP*)&method_op;
2664 if (!(flags & G_EVAL)) {
2666 CALL_BODY_SUB((OP*)&myop);
2667 retval = PL_stack_sp - (PL_stack_base + oldmark);
2668 CATCH_SET(oldcatch);
2671 myop.op_other = (OP*)&myop;
2673 create_eval_scope(flags|G_FAKINGEVAL);
2681 CALL_BODY_SUB((OP*)&myop);
2682 retval = PL_stack_sp - (PL_stack_base + oldmark);
2683 if (!(flags & G_KEEPERR)) {
2691 /* my_exit() was called */
2692 PL_curstash = PL_defstash;
2699 PL_restartjmpenv = NULL;
2700 PL_op = PL_restartop;
2704 PL_stack_sp = PL_stack_base + oldmark;
2705 if ((flags & G_WANT) == G_ARRAY)
2709 *++PL_stack_sp = &PL_sv_undef;
2714 if (PL_scopestack_ix > oldscope)
2715 delete_eval_scope();
2719 if (flags & G_DISCARD) {
2720 PL_stack_sp = PL_stack_base + oldmark;
2729 /* Eval a string. The G_EVAL flag is always assumed. */
2732 =for apidoc p||eval_sv
2734 Tells Perl to C<eval> the string in the SV. It supports the same flags
2735 as C<call_sv>, with the obvious exception of G_EVAL. See L<perlcall>.
2741 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
2743 /* See G_* flags in cop.h */
2747 UNOP myop; /* fake syntax tree node */
2748 VOL I32 oldmark = SP - PL_stack_base;
2751 OP* const oldop = PL_op;
2754 PERL_ARGS_ASSERT_EVAL_SV;
2756 if (flags & G_DISCARD) {
2763 Zero(PL_op, 1, UNOP);
2764 EXTEND(PL_stack_sp, 1);
2765 *++PL_stack_sp = sv;
2767 if (!(flags & G_NOARGS))
2768 myop.op_flags = OPf_STACKED;
2769 myop.op_next = NULL;
2770 myop.op_type = OP_ENTEREVAL;
2771 myop.op_flags |= OP_GIMME_REVERSE(flags);
2772 if (flags & G_KEEPERR)
2773 myop.op_flags |= OPf_SPECIAL;
2775 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2776 * before a PUSHEVAL, which corrupts the stack after a croak */
2777 TAINT_PROPER("eval_sv()");
2783 if (PL_op == (OP*)(&myop)) {
2784 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2786 goto fail; /* failed in compilation */
2789 retval = PL_stack_sp - (PL_stack_base + oldmark);
2790 if (!(flags & G_KEEPERR)) {
2798 /* my_exit() was called */
2799 PL_curstash = PL_defstash;
2806 PL_restartjmpenv = NULL;
2807 PL_op = PL_restartop;
2812 PL_stack_sp = PL_stack_base + oldmark;
2813 if ((flags & G_WANT) == G_ARRAY)
2817 *++PL_stack_sp = &PL_sv_undef;
2823 if (flags & G_DISCARD) {
2824 PL_stack_sp = PL_stack_base + oldmark;
2834 =for apidoc p||eval_pv
2836 Tells Perl to C<eval> the given string and return an SV* result.
2842 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
2846 SV* sv = newSVpv(p, 0);
2848 PERL_ARGS_ASSERT_EVAL_PV;
2850 eval_sv(sv, G_SCALAR);
2857 if (croak_on_error && SvTRUE(ERRSV)) {
2858 Perl_croak(aTHX_ "%s", SvPVx_nolen_const(ERRSV));
2864 /* Require a module. */
2867 =head1 Embedding Functions
2869 =for apidoc p||require_pv
2871 Tells Perl to C<require> the file named by the string argument. It is
2872 analogous to the Perl code C<eval "require '$file'">. It's even
2873 implemented that way; consider using load_module instead.
2878 Perl_require_pv(pTHX_ const char *pv)
2884 PERL_ARGS_ASSERT_REQUIRE_PV;
2886 PUSHSTACKi(PERLSI_REQUIRE);
2888 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2889 eval_sv(sv_2mortal(sv), G_DISCARD);
2895 S_usage(pTHX_ const char *name) /* XXX move this out into a module ? */
2897 /* This message really ought to be max 23 lines.
2898 * Removed -h because the user already knows that option. Others? */
2900 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
2901 minimum of 509 character string literals. */
2902 static const char * const usage_msg[] = {
2903 " -0[octal] specify record separator (\\0, if no argument)\n"
2904 " -a autosplit mode with -n or -p (splits $_ into @F)\n"
2905 " -C[number/list] enables the listed Unicode features\n"
2906 " -c check syntax only (runs BEGIN and CHECK blocks)\n"
2907 " -d[:debugger] run program under debugger\n"
2908 " -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
2909 " -e program one line of program (several -e's allowed, omit programfile)\n"
2910 " -E program like -e, but enables all optional features\n"
2911 " -f don't do $sitelib/sitecustomize.pl at startup\n"
2912 " -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
2913 " -i[extension] edit <> files in place (makes backup if extension supplied)\n"
2914 " -Idirectory specify @INC/#include directory (several -I's allowed)\n",
2915 " -l[octal] enable line ending processing, specifies line terminator\n"
2916 " -[mM][-]module execute \"use/no module...\" before executing program\n"
2917 " -n assume \"while (<>) { ... }\" loop around program\n"
2918 " -p assume loop like -n but print line also, like sed\n"
2919 " -s enable rudimentary parsing for switches after programfile\n"
2920 " -S look for programfile using PATH environment variable\n",
2921 " -t enable tainting warnings\n"
2922 " -T enable tainting checks\n"
2923 " -u dump core after parsing program\n"
2924 " -U allow unsafe operations\n"
2925 " -v print version, patchlevel and license\n"
2926 " -V[:variable] print configuration summary (or a single Config.pm variable)\n",
2927 " -w enable many useful warnings\n"
2928 " -W enable all warnings\n"
2929 " -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
2930 " -X disable all warnings\n"
2932 "Run 'perldoc perl' for more help with Perl.\n\n",
2935 const char * const *p = usage_msg;
2936 PerlIO *out = PerlIO_stdout();
2938 PERL_ARGS_ASSERT_USAGE;
2941 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
2944 PerlIO_puts(out, *p++);
2947 /* convert a string of -D options (or digits) into an int.
2948 * sets *s to point to the char after the options */
2952 Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
2954 static const char * const usage_msgd[] = {
2955 " Debugging flag values: (see also -d)\n"
2956 " p Tokenizing and parsing (with v, displays parse stack)\n"
2957 " s Stack snapshots (with v, displays all stacks)\n"
2958 " l Context (loop) stack processing\n"
2959 " t Trace execution\n"
2960 " o Method and overloading resolution\n",
2961 " c String/numeric conversions\n"
2962 " P Print profiling info, source file input state\n"
2963 " m Memory and SV allocation\n"
2964 " f Format processing\n"
2965 " r Regular expression parsing and execution\n"
2966 " x Syntax tree dump\n",
2967 " u Tainting checks\n"
2968 " H Hash dump -- usurps values()\n"
2969 " X Scratchpad allocation\n"
2972 " R Include reference counts of dumped variables (eg when using -Ds)\n",
2973 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
2974 " v Verbose: use in conjunction with other flags\n"
2975 " C Copy On Write\n"
2976 " A Consistency checks on internal structures\n"
2977 " q quiet - currently only suppresses the 'EXECUTING' message\n"
2978 " M trace smart match resolution\n"
2979 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
2984 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
2987 /* if adding extra options, remember to update DEBUG_MASK */
2988 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMB";
2990 for (; isALNUM(**s); (*s)++) {
2991 const char * const d = strchr(debopts,**s);
2993 i |= 1 << (d - debopts);
2994 else if (ckWARN_d(WARN_DEBUGGING))
2995 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2996 "invalid option -D%c, use -D'' to see choices\n", **s);
2999 else if (isDIGIT(**s)) {
3001 for (; isALNUM(**s); (*s)++) ;
3003 else if (givehelp) {
3004 const char *const *p = usage_msgd;
3005 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
3008 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
3009 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3010 "-Dp not implemented on this platform\n");
3016 /* This routine handles any switches that can be given during run */
3019 Perl_moreswitches(pTHX_ const char *s)
3023 const char option = *s; /* used to remember option in -m/-M code */
3025 PERL_ARGS_ASSERT_MORESWITCHES;
3033 SvREFCNT_dec(PL_rs);
3034 if (s[1] == 'x' && s[2]) {
3035 const char *e = s+=2;
3041 flags = PERL_SCAN_SILENT_ILLDIGIT;
3042 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3043 if (s + numlen < e) {
3044 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3048 PL_rs = newSVpvs("");
3049 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
3050 tmps = (U8*)SvPVX(PL_rs);
3051 uvchr_to_utf8(tmps, rschar);
3052 SvCUR_set(PL_rs, UNISKIP(rschar));
3057 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3058 if (rschar & ~((U8)~0))
3059 PL_rs = &PL_sv_undef;
3060 else if (!rschar && numlen >= 2)
3061 PL_rs = newSVpvs("");
3063 char ch = (char)rschar;
3064 PL_rs = newSVpvn(&ch, 1);
3067 sv_setsv(get_sv("/", GV_ADD), PL_rs);
3072 PL_unicode = parse_unicode_opts( (const char **)&s );
3073 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3079 while (*s && !isSPACE(*s)) ++s;
3080 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
3091 forbid_setid('d', FALSE);
3094 /* -dt indicates to the debugger that threads will be used */
3095 if (*s == 't' && !isALNUM(s[1])) {
3097 my_setenv("PERL5DB_THREADED", "1");
3100 /* The following permits -d:Mod to accepts arguments following an =
3101 in the fashion that -MSome::Mod does. */
3102 if (*s == ':' || *s == '=') {
3109 sv = newSVpvs("no Devel::");
3111 sv = newSVpvs("use Devel::");
3115 end = s + strlen(s);
3117 /* We now allow -d:Module=Foo,Bar and -d:-Module */
3118 while(isALNUM(*s) || *s==':') ++s;
3120 sv_catpvn(sv, start, end - start);
3122 sv_catpvn(sv, start, s-start);
3123 /* Don't use NUL as q// delimiter here, this string goes in the
3125 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
3128 my_setenv("PERL5DB", SvPV_nolen_const(sv));
3132 PL_perldb = PERLDB_ALL;
3139 forbid_setid('D', FALSE);
3141 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
3142 #else /* !DEBUGGING */
3143 if (ckWARN_d(WARN_DEBUGGING))
3144 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3145 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
3146 for (s++; isALNUM(*s); s++) ;
3151 usage(PL_origargv[0]);
3154 Safefree(PL_inplace);
3155 #if defined(__CYGWIN__) /* do backup extension automagically */
3156 if (*(s+1) == '\0') {
3157 PL_inplace = savepvs(".bak");
3160 #endif /* __CYGWIN__ */
3162 const char * const start = ++s;
3163 while (*s && !isSPACE(*s))
3166 PL_inplace = savepvn(start, s - start);
3170 if (*s == '-') /* Additional switches on #! line. */
3174 case 'I': /* -I handled both here and in parse_body() */
3175 forbid_setid('I', FALSE);
3177 while (*s && isSPACE(*s))
3182 /* ignore trailing spaces (possibly followed by other switches) */
3184 for (e = p; *e && !isSPACE(*e); e++) ;
3188 } while (*p && *p != '-');
3190 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
3196 Perl_croak(aTHX_ "No directory specified for -I");
3202 SvREFCNT_dec(PL_ors_sv);
3208 PL_ors_sv = newSVpvs("\n");
3209 numlen = 3 + (*s == '0');
3210 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
3214 if (RsPARA(PL_rs)) {
3215 PL_ors_sv = newSVpvs("\n\n");
3218 PL_ors_sv = newSVsv(PL_rs);
3223 forbid_setid('M', FALSE); /* XXX ? */
3226 forbid_setid('m', FALSE); /* XXX ? */
3231 const char *use = "use ";
3233 /* -M-foo == 'no foo' */
3234 /* Leading space on " no " is deliberate, to make both
3235 possibilities the same length. */
3236 if (*s == '-') { use = " no "; ++s; }
3237 sv = newSVpvn(use,4);
3239 /* We allow -M'Module qw(Foo Bar)' */
3240 while(isALNUM(*s) || *s==':') {
3249 Perl_croak(aTHX_ "Module name required with -%c option",
3252 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3253 "contains single ':'",
3254 (int)(s - start), start, option);
3255 end = s + strlen(s);
3257 sv_catpvn(sv, start, end - start);
3258 if (option == 'm') {
3260 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
3261 sv_catpvs( sv, " ()");
3264 sv_catpvn(sv, start, s-start);
3265 /* Use NUL as q''-delimiter. */
3266 sv_catpvs(sv, " split(/,/,q\0");
3268 sv_catpvn(sv, s, end - s);
3269 sv_catpvs(sv, "\0)");
3272 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
3275 Perl_croak(aTHX_ "Missing argument to -%c", option);
3286 forbid_setid('s', FALSE);
3287 PL_doswitches = TRUE;
3301 PL_do_undump = TRUE;
3309 if (!sv_derived_from(PL_patchlevel, "version"))
3310 upg_version(PL_patchlevel, TRUE);
3313 SV* level= vstringify(PL_patchlevel);
3314 #ifdef PERL_PATCHNUM
3315 # ifdef PERL_GIT_UNCOMMITTED_CHANGES
3316 SV *num = newSVpvs(PERL_PATCHNUM "*");
3318 SV *num = newSVpvs(PERL_PATCHNUM);
3321 if (sv_len(num)>=sv_len(level) && strnEQ(SvPV_nolen(num),SvPV_nolen(level),sv_len(level))) {
3322 SvREFCNT_dec(level);
3325 Perl_sv_catpvf(aTHX_ level, " (%"SVf")", num);
3329 PerlIO_printf(PerlIO_stdout(),
3330 "\nThis is perl " STRINGIFY(PERL_REVISION)
3331 ", version " STRINGIFY(PERL_VERSION)
3332 ", subversion " STRINGIFY(PERL_SUBVERSION)
3333 " (%"SVf") built for " ARCHNAME, level
3335 SvREFCNT_dec(level);
3338 /* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3339 PerlIO_printf(PerlIO_stdout(),
3340 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
3341 SVfARG(vstringify(PL_patchlevel))));
3342 PerlIO_printf(PerlIO_stdout(),
3343 Perl_form(aTHX_ " built under %s at %s %s\n",
3344 OSNAME, __DATE__, __TIME__));
3345 PerlIO_printf(PerlIO_stdout(),
3346 Perl_form(aTHX_ " OS Specific Release: %s\n",
3349 #if defined(LOCAL_PATCH_COUNT)
3350 if (LOCAL_PATCH_COUNT > 0)
3351 PerlIO_printf(PerlIO_stdout(),
3352 "\n(with %d registered patch%s, "
3353 "see perl -V for more detail)",
3355 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
3358 PerlIO_printf(PerlIO_stdout(),
3359 "\n\nCopyright 1987-2011, Larry Wall\n");
3361 PerlIO_printf(PerlIO_stdout(),
3362 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
3365 PerlIO_printf(PerlIO_stdout(),
3366 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3367 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
3370 PerlIO_printf(PerlIO_stdout(),
3371 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
3372 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
3375 PerlIO_printf(PerlIO_stdout(),
3376 "atariST series port, ++jrb bammi@cadence.com\n");
3379 PerlIO_printf(PerlIO_stdout(),
3380 "BeOS port Copyright Tom Spindler, 1997-1999\n");
3383 PerlIO_printf(PerlIO_stdout(),
3384 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n");
3387 PerlIO_printf(PerlIO_stdout(),
3388 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
3391 PerlIO_printf(PerlIO_stdout(),
3392 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
3395 PerlIO_printf(PerlIO_stdout(),
3396 "VM/ESA port by Neale Ferguson, 1998-1999\n");
3399 PerlIO_printf(PerlIO_stdout(),
3400 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
3403 PerlIO_printf(PerlIO_stdout(),
3404 "EPOC port by Olaf Flebbe, 1999-2002\n");
3407 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
3408 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
3411 #ifdef __SYMBIAN32__
3412 PerlIO_printf(PerlIO_stdout(),
3413 "Symbian port by Nokia, 2004-2005\n");
3415 #ifdef BINARY_BUILD_NOTICE
3416 BINARY_BUILD_NOTICE;
3418 PerlIO_printf(PerlIO_stdout(),
3420 Perl may be copied only under the terms of either the Artistic License or the\n\
3421 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
3422 Complete documentation for Perl, including FAQ lists, should be found on\n\
3423 this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
3424 Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
3427 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
3428 PL_dowarn |= G_WARN_ON;
3433 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
3434 if (!specialWARN(PL_compiling.cop_warnings))
3435 PerlMemShared_free(PL_compiling.cop_warnings);
3436 PL_compiling.cop_warnings = pWARN_ALL ;
3440 PL_dowarn = G_WARN_ALL_OFF;
3441 if (!specialWARN(PL_compiling.cop_warnings))
3442 PerlMemShared_free(PL_compiling.cop_warnings);
3443 PL_compiling.cop_warnings = pWARN_NONE ;
3450 if (s[0] == '-') /* Additional switches on #! line. */
3455 #if defined(WIN32) || !defined(PERL_STRICT_CR)
3461 #ifdef ALTERNATE_SHEBANG
3462 case 'S': /* OS/2 needs -S on "extproc" line. */
3466 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
3471 /* compliments of Tom Christiansen */
3473 /* unexec() can be found in the Gnu emacs distribution */
3474 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
3477 Perl_my_unexec(pTHX)
3479 PERL_UNUSED_CONTEXT;
3481 SV * prog = newSVpv(BIN_EXP, 0);
3482 SV * file = newSVpv(PL_origfilename, 0);
3486 sv_catpvs(prog, "/perl");
3487 sv_catpvs(file, ".perldump");
3489 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3490 /* unexec prints msg to stderr in case of failure */
3491 PerlProc_exit(status);
3494 # include <lib$routines.h>
3495 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
3496 # elif defined(WIN32) || defined(__CYGWIN__)
3497 Perl_croak(aTHX_ "dump is not supported");
3499 ABORT(); /* for use with undump */
3504 /* initialize curinterp */
3510 # define PERLVAR(prefix,var,type)
3511 # define PERLVARA(prefix,var,n,type)
3512 # if defined(PERL_IMPLICIT_CONTEXT)
3513 # define PERLVARI(prefix,var,type,init) aTHX->prefix##var = init;
3514 # define PERLVARIC(prefix,var,type,init) aTHX->prefix##var = init;
3516 # define PERLVARI(prefix,var,type,init) PERL_GET_INTERP->var = init;
3517 # define PERLVARIC(prefix,var,type,init) PERL_GET_INTERP->var = init;
3519 # include "intrpvar.h"
3525 # define PERLVAR(prefix,var,type)
3526 # define PERLVARA(prefix,var,n,type)
3527 # define PERLVARI(prefix,var,type,init) PL_##var = init;
3528 # define PERLVARIC(prefix,var,type,init) PL_##var = init;
3529 # include "intrpvar.h"
3536 /* As these are inside a structure, PERLVARI isn't capable of initialising
3538 PL_reg_oldcurpm = PL_reg_curpm = NULL;
3539 PL_reg_poscache = PL_reg_starttry = NULL;
3543 S_init_main_stash(pTHX)
3548 PL_curstash = PL_defstash = newHV();
3549 /* We know that the string "main" will be in the global shared string
3550 table, so it's a small saving to use it rather than allocate another
3552 PL_curstname = newSVpvs_share("main");
3553 gv = gv_fetchpvs("main::", GV_ADD|GV_NOTQUAL, SVt_PVHV);
3554 /* If we hadn't caused another reference to "main" to be in the shared
3555 string table above, then it would be worth reordering these two,
3556 because otherwise all we do is delete "main" from it as a consequence
3557 of the SvREFCNT_dec, only to add it again with hv_name_set */
3558 SvREFCNT_dec(GvHV(gv));
3559 hv_name_set(PL_defstash, "main", 4, 0);
3560 GvHV(gv) = MUTABLE_HV(SvREFCNT_inc_simple(PL_defstash));
3562 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpvs("INC", GV_ADD|GV_NOTQUAL,
3564 SvREFCNT_inc_simple_void(PL_incgv); /* Don't allow it to be freed */
3565 GvMULTI_on(PL_incgv);
3566 PL_hintgv = gv_fetchpvs("\010", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^H */
3567 GvMULTI_on(PL_hintgv);
3568 PL_defgv = gv_fetchpvs("_", GV_ADD|GV_NOTQUAL, SVt_PVAV);
3569 SvREFCNT_inc_simple_void(PL_defgv);
3570 PL_errgv = gv_HVadd(gv_fetchpvs("@", GV_ADD|GV_NOTQUAL, SVt_PV));
3571 SvREFCNT_inc_simple_void(PL_errgv);
3572 GvMULTI_on(PL_errgv);
3573 PL_replgv = gv_fetchpvs("\022", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^R */
3574 GvMULTI_on(PL_replgv);
3575 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
3576 #ifdef PERL_DONT_CREATE_GVSV
3579 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
3581 PL_curstash = PL_defstash;
3582 CopSTASH_set(&PL_compiling, PL_defstash);
3583 PL_debstash = GvHV(gv_fetchpvs("DB::", GV_ADDMULTI, SVt_PVHV));
3584 PL_globalstash = GvHV(gv_fetchpvs("CORE::GLOBAL::", GV_ADDMULTI,
3586 /* We must init $/ before switches are processed. */
3587 sv_setpvs(get_sv("/", GV_ADD), "\n");
3591 S_open_script(pTHX_ const char *scriptname, bool dosearch,
3592 bool *suidscript, PerlIO **rsfpp)
3597 PERL_ARGS_ASSERT_OPEN_SCRIPT;
3600 PL_origfilename = savepvs("-e");
3603 /* if find_script() returns, it returns a malloc()-ed value */
3604 scriptname = PL_origfilename = find_script(scriptname, dosearch, NULL, 1);
3606 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
3607 const char *s = scriptname + 8;
3613 * Tell apart "normal" usage of fdscript, e.g.
3614 * with bash on FreeBSD:
3615 * perl <( echo '#!perl -DA'; echo 'print "$0\n"')
3616 * from usage in suidperl.
3617 * Does any "normal" usage leave garbage after the number???
3618 * Is it a mistake to use a similar /dev/fd/ construct for
3623 * Be supersafe and do some sanity-checks.
3624 * Still, can we be sure we got the right thing?
3627 Perl_croak(aTHX_ "Wrong syntax (suid) fd script name \"%s\"\n", s);
3630 Perl_croak(aTHX_ "Missing (suid) fd script name\n");
3632 scriptname = savepv(s + 1);
3633 Safefree(PL_origfilename);
3634 PL_origfilename = (char *)scriptname;
3639 CopFILE_free(PL_curcop);
3640 CopFILE_set(PL_curcop, PL_origfilename);
3641 if (*PL_origfilename == '-' && PL_origfilename[1] == '\0')
3642 scriptname = (char *)"";
3643 if (fdscript >= 0) {
3644 *rsfpp = PerlIO_fdopen(fdscript,PERL_SCRIPT_MODE);
3645 # if defined(HAS_FCNTL) && defined(F_SETFD)
3647 /* ensure close-on-exec */
3648 fcntl(PerlIO_fileno(*rsfpp),F_SETFD,1);
3651 else if (!*scriptname) {
3652 forbid_setid(0, *suidscript);
3653 *rsfpp = PerlIO_stdin();
3656 #ifdef FAKE_BIT_BUCKET
3657 /* This hack allows one not to have /dev/null (or BIT_BUCKET as it
3658 * is called) and still have the "-e" work. (Believe it or not,
3659 * a /dev/null is required for the "-e" to work because source
3660 * filter magic is used to implement it. ) This is *not* a general
3661 * replacement for a /dev/null. What we do here is create a temp
3662 * file (an empty file), open up that as the script, and then
3663 * immediately close and unlink it. Close enough for jazz. */
3664 #define FAKE_BIT_BUCKET_PREFIX "/tmp/perlnull-"
3665 #define FAKE_BIT_BUCKET_SUFFIX "XXXXXXXX"
3666 #define FAKE_BIT_BUCKET_TEMPLATE FAKE_BIT_BUCKET_PREFIX FAKE_BIT_BUCKET_SUFFIX
3667 char tmpname[sizeof(FAKE_BIT_BUCKET_TEMPLATE)] = {
3668 FAKE_BIT_BUCKET_TEMPLATE
3670 const char * const err = "Failed to create a fake bit bucket";
3671 if (strEQ(scriptname, BIT_BUCKET)) {
3672 #ifdef HAS_MKSTEMP /* Hopefully mkstemp() is safe here. */
3673 int tmpfd = mkstemp(tmpname);
3675 scriptname = tmpname;
3678 Perl_croak(aTHX_ err);
3681 scriptname = mktemp(tmpname);
3683 Perl_croak(aTHX_ err);
3688 *rsfpp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
3689 #ifdef FAKE_BIT_BUCKET
3690 if (memEQ(scriptname, FAKE_BIT_BUCKET_PREFIX,
3691 sizeof(FAKE_BIT_BUCKET_PREFIX) - 1)
3692 && strlen(scriptname) == sizeof(tmpname) - 1) {
3695 scriptname = BIT_BUCKET;
3697 # if defined(HAS_FCNTL) && defined(F_SETFD)
3699 /* ensure close-on-exec */
3700 fcntl(PerlIO_fileno(*rsfpp),F_SETFD,1);
3704 /* PSz 16 Sep 03 Keep neat error message */
3706 Perl_croak(aTHX_ "Can't open "BIT_BUCKET": %s\n", Strerror(errno));
3708 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3709 CopFILE(PL_curcop), Strerror(errno));
3715 * I_SYSSTATVFS HAS_FSTATVFS
3717 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
3718 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
3719 * here so that metaconfig picks them up. */
3722 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
3723 /* Don't even need this function. */
3726 S_validate_suid(pTHX_ PerlIO *rsfp)
3728 PERL_ARGS_ASSERT_VALIDATE_SUID;
3730 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
3733 PerlLIO_fstat(PerlIO_fileno(rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3734 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3736 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3739 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3740 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3741 /* not set-id, must be wrapped */
3744 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3747 S_find_beginning(pTHX_ SV* linestr_sv, PerlIO *rsfp)
3751 register const char *s2;
3753 PERL_ARGS_ASSERT_FIND_BEGINNING;
3755 /* skip forward in input to the real script? */
3758 if ((s = sv_gets(linestr_sv, rsfp, 0)) == NULL)
3759 Perl_croak(aTHX_ "No Perl script found in input\n");
3761 } while (!(*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))));
3762 PerlIO_ungetc(rsfp, '\n'); /* to keep line count right */
3763 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3765 while (*s == ' ' || *s == '\t') s++;
3767 while (isDIGIT(s2[-1]) || s2[-1] == '-' || s2[-1] == '.'
3768 || s2[-1] == '_') s2--;
3769 if (strnEQ(s2-4,"perl",4))
3770 while ((s = moreswitches(s)))
3780 PL_uid = PerlProc_getuid();
3781 PL_euid = PerlProc_geteuid();
3782 PL_gid = PerlProc_getgid();
3783 PL_egid = PerlProc_getegid();
3785 PL_uid |= PL_gid << 16;
3786 PL_euid |= PL_egid << 16;
3788 /* Should not happen: */
3789 CHECK_MALLOC_TAINT(PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3790 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3793 * Should go by suidscript, not uid!=euid: why disallow
3794 * system("ls") in scripts run from setuid things?
3795 * Or, is this run before we check arguments and set suidscript?
3796 * What about SETUID_SCRIPTS_ARE_SECURE_NOW: could we use fdscript then?
3797 * (We never have suidscript, can we be sure to have fdscript?)
3798 * Or must then go by UID checks? See comments in forbid_setid also.
3802 /* This is used very early in the lifetime of the program,
3803 * before even the options are parsed, so PL_tainting has
3804 * not been initialized properly. */
3806 Perl_doing_taint(int argc, char *argv[], char *envp[])
3808 #ifndef PERL_IMPLICIT_SYS
3809 /* If we have PERL_IMPLICIT_SYS we can't call getuid() et alia
3810 * before we have an interpreter-- and the whole point of this
3811 * function is to be called at such an early stage. If you are on
3812 * a system with PERL_IMPLICIT_SYS but you do have a concept of
3813 * "tainted because running with altered effective ids', you'll
3814 * have to add your own checks somewhere in here. The two most
3815 * known samples of 'implicitness' are Win32 and NetWare, neither
3816 * of which has much of concept of 'uids'. */
3817 int uid = PerlProc_getuid();
3818 int euid = PerlProc_geteuid();
3819 int gid = PerlProc_getgid();
3820 int egid = PerlProc_getegid();
3827 if (uid && (euid != uid || egid != gid))
3829 #endif /* !PERL_IMPLICIT_SYS */
3830 /* This is a really primitive check; environment gets ignored only
3831 * if -T are the first chars together; otherwise one gets
3832 * "Too late" message. */
3833 if ( argc > 1 && argv[1][0] == '-'
3834 && (argv[1][1] == 't' || argv[1][1] == 'T') )
3839 /* Passing the flag as a single char rather than a string is a slight space
3840 optimisation. The only message that isn't /^-.$/ is
3841 "program input from stdin", which is substituted in place of '\0', which
3842 could never be a command line flag. */
3844 S_forbid_setid(pTHX_ const char flag, const bool suidscript) /* g */
3847 char string[3] = "-x";
3848 const char *message = "program input from stdin";
3855 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
3856 if (PL_euid != PL_uid)
3857 Perl_croak(aTHX_ "No %s allowed while running setuid", message);
3858 if (PL_egid != PL_gid)
3859 Perl_croak(aTHX_ "No %s allowed while running setgid", message);
3860 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3862 Perl_croak(aTHX_ "No %s allowed with (suid) fdscript", message);
3866 Perl_init_dbargs(pTHX)
3868 AV *const args = PL_dbargs = GvAV(gv_AVadd((gv_fetchpvs("DB::args",
3873 /* Someone has already created it.
3874 It might have entries, and if we just turn off AvREAL(), they will
3875 "leak" until global destruction. */
3878 AvREIFY_only(PL_dbargs);
3882 Perl_init_debugger(pTHX)
3885 HV * const ostash = PL_curstash;
3887 PL_curstash = PL_debstash;
3889 Perl_init_dbargs(aTHX);
3890 PL_DBgv = gv_fetchpvs("DB::DB", GV_ADDMULTI, SVt_PVGV);
3891 PL_DBline = gv_fetchpvs("DB::dbline", GV_ADDMULTI, SVt_PVAV);
3892 PL_DBsub = gv_HVadd(gv_fetchpvs("DB::sub", GV_ADDMULTI, SVt_PVHV));
3893 PL_DBsingle = GvSV((gv_fetchpvs("DB::single", GV_ADDMULTI, SVt_PV)));
3894 if (!SvIOK(PL_DBsingle))
3895 sv_setiv(PL_DBsingle, 0);
3896 PL_DBtrace = GvSV((gv_fetchpvs("DB::trace", GV_ADDMULTI, SVt_PV)));
3897 if (!SvIOK(PL_DBtrace))
3898 sv_setiv(PL_DBtrace, 0);
3899 PL_DBsignal = GvSV((gv_fetchpvs("DB::signal", GV_ADDMULTI, SVt_PV)));
3900 if (!SvIOK(PL_DBsignal))
3901 sv_setiv(PL_DBsignal, 0);
3902 PL_curstash = ostash;
3905 #ifndef STRESS_REALLOC
3906 #define REASONABLE(size) (size)
3908 #define REASONABLE(size) (1) /* unreasonable */
3912 Perl_init_stacks(pTHX)
3915 /* start with 128-item stack and 8K cxstack */
3916 PL_curstackinfo = new_stackinfo(REASONABLE(128),
3917 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3918 PL_curstackinfo->si_type = PERLSI_MAIN;
3919 PL_curstack = PL_curstackinfo->si_stack;
3920 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
3922 PL_stack_base = AvARRAY(PL_curstack);
3923 PL_stack_sp = PL_stack_base;
3924 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
3926 Newx(PL_tmps_stack,REASONABLE(128),SV*);
3929 PL_tmps_max = REASONABLE(128);
3931 Newx(PL_markstack,REASONABLE(32),I32);
3932 PL_markstack_ptr = PL_markstack;
3933 PL_markstack_max = PL_markstack + REASONABLE(32);
3937 Newx(PL_scopestack,REASONABLE(32),I32);
3939 Newx(PL_scopestack_name,REASONABLE(32),const char*);
3941 PL_scopestack_ix = 0;
3942 PL_scopestack_max = REASONABLE(32);
3944 Newx(PL_savestack,REASONABLE(128),ANY);
3945 PL_savestack_ix = 0;
3946 PL_savestack_max = REASONABLE(128);
3955 while (PL_curstackinfo->si_next)
3956 PL_curstackinfo = PL_curstackinfo->si_next;
3957 while (PL_curstackinfo) {
3958 PERL_SI *p = PL_curstackinfo->si_prev;
3959 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3960 Safefree(PL_curstackinfo->si_cxstack);
3961 Safefree(PL_curstackinfo);
3962 PL_curstackinfo = p;
3964 Safefree(PL_tmps_stack);
3965 Safefree(PL_markstack);
3966 Safefree(PL_scopestack);
3968 Safefree(PL_scopestack_name);
3970 Safefree(PL_savestack);
3974 Perl_populate_isa(pTHX_ const char *name, STRLEN len, ...)
3976 GV *const gv = gv_fetchpvn(name, len, GV_ADD | GV_ADDMULTI, SVt_PVAV);
3977 AV *const isa = GvAVn(gv);
3980 PERL_ARGS_ASSERT_POPULATE_ISA;
3982 if(AvFILLp(isa) != -1)
3985 /* NOTE: No support for tied ISA */
3987 va_start(args, len);
3989 const char *const parent = va_arg(args, const char*);
3994 parent_len = va_arg(args, size_t);
3996 /* Arguments are supplied with a trailing :: */
3997 assert(parent_len > 2);
3998 assert(parent[parent_len - 1] == ':');
3999 assert(parent[parent_len - 2] == ':');
4000 av_push(isa, newSVpvn(parent, parent_len - 2));
4001 (void) gv_fetchpvn(parent, parent_len, GV_ADD, SVt_PVGV);
4008 S_init_predump_symbols(pTHX)
4014 sv_setpvs(get_sv("\"", GV_ADD), " ");
4015 PL_ofsgv = (GV*)SvREFCNT_inc(gv_fetchpvs(",", GV_ADD|GV_NOTQUAL, SVt_PV));
4018 /* Historically, PVIOs were blessed into IO::Handle, unless
4019 FileHandle was loaded, in which case they were blessed into
4020 that. Action at a distance.
4021 However, if we simply bless into IO::Handle, we break code
4022 that assumes that PVIOs will have (among others) a seek
4023 method. IO::File inherits from IO::Handle and IO::Seekable,
4024 and provides the needed methods. But if we simply bless into
4025 it, then we break code that assumed that by loading
4026 IO::Handle, *it* would work.
4027 So a compromise is to set up the correct @IO::File::ISA,
4028 so that code that does C<use IO::Handle>; will still work.
4031 Perl_populate_isa(aTHX_ STR_WITH_LEN("IO::File::ISA"),
4032 STR_WITH_LEN("IO::Handle::"),
4033 STR_WITH_LEN("IO::Seekable::"),
4034 STR_WITH_LEN("Exporter::"),
4037 PL_stdingv = gv_fetchpvs("STDIN", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4038 GvMULTI_on(PL_stdingv);
4039 io = GvIOp(PL_stdingv);
4040 IoTYPE(io) = IoTYPE_RDONLY;
4041 IoIFP(io) = PerlIO_stdin();
4042 tmpgv = gv_fetchpvs("stdin", GV_ADD|GV_NOTQUAL, SVt_PV);
4044 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4046 tmpgv = gv_fetchpvs("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4049 IoTYPE(io) = IoTYPE_WRONLY;
4050 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
4052 tmpgv = gv_fetchpvs("stdout", GV_ADD|GV_NOTQUAL, SVt_PV);
4054 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4056 PL_stderrgv = gv_fetchpvs("STDERR", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4057 GvMULTI_on(PL_stderrgv);
4058 io = GvIOp(PL_stderrgv);
4059 IoTYPE(io) = IoTYPE_WRONLY;
4060 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
4061 tmpgv = gv_fetchpvs("stderr", GV_ADD|GV_NOTQUAL, SVt_PV);
4063 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4065 PL_statname = newSV(0); /* last filename we did stat on */
4069 Perl_init_argv_symbols(pTHX_ register int argc, register char **argv)
4073 PERL_ARGS_ASSERT_INIT_ARGV_SYMBOLS;
4075 argc--,argv++; /* skip name of script */
4076 if (PL_doswitches) {
4077 for (; argc > 0 && **argv == '-'; argc--,argv++) {
4081 if (argv[0][1] == '-' && !argv[0][2]) {
4085 if ((s = strchr(argv[0], '='))) {
4086 const char *const start_name = argv[0] + 1;
4087 sv_setpv(GvSV(gv_fetchpvn_flags(start_name, s - start_name,
4088 TRUE, SVt_PV)), s + 1);
4091 sv_setiv(GvSV(gv_fetchpv(argv[0]+1, GV_ADD, SVt_PV)),1);
4094 if ((PL_argvgv = gv_fetchpvs("ARGV", GV_ADD|GV_NOTQUAL, SVt_PVAV))) {
4095 GvMULTI_on(PL_argvgv);
4096 (void)gv_AVadd(PL_argvgv);
4097 av_clear(GvAVn(PL_argvgv));
4098 for (; argc > 0; argc--,argv++) {
4099 SV * const sv = newSVpv(argv[0],0);
4100 av_push(GvAVn(PL_argvgv),sv);
4101 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
4102 if (PL_unicode & PERL_UNICODE_ARGV_FLAG)
4105 if (PL_unicode & PERL_UNICODE_WIDESYSCALLS_FLAG) /* Sarathy? */
4106 (void)sv_utf8_decode(sv);
4112 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
4117 PERL_ARGS_ASSERT_INIT_POSTDUMP_SYMBOLS;
4119 PL_toptarget = newSV_type(SVt_PVFM);
4120 sv_setpvs(PL_toptarget, "");
4121 PL_bodytarget = newSV_type(SVt_PVFM);
4122 sv_setpvs(PL_bodytarget, "");
4123 PL_formtarget = PL_bodytarget;
4127 init_argv_symbols(argc,argv);
4129 if ((tmpgv = gv_fetchpvs("0", GV_ADD|GV_NOTQUAL, SVt_PV))) {
4130 sv_setpv(GvSV(tmpgv),PL_origfilename);
4132 if ((PL_envgv = gv_fetchpvs("ENV", GV_ADD|GV_NOTQUAL, SVt_PVHV))) {
4134 bool env_is_not_environ;
4135 GvMULTI_on(PL_envgv);
4136 hv = GvHVn(PL_envgv);
4137 hv_magic(hv, NULL, PERL_MAGIC_env);
4139 #ifdef USE_ENVIRON_ARRAY
4140 /* Note that if the supplied env parameter is actually a copy
4141 of the global environ then it may now point to free'd memory
4142 if the environment has been modified since. To avoid this
4143 problem we treat env==NULL as meaning 'use the default'
4147 env_is_not_environ = env != environ;
4148 if (env_is_not_environ
4149 # ifdef USE_ITHREADS
4150 && PL_curinterp == aTHX
4159 for (; *env; env++) {
4162 if (!(s = strchr(old_var,'=')) || s == old_var)
4165 #if defined(MSDOS) && !defined(DJGPP)
4167 (void)strupr(old_var);
4170 sv = newSVpv(s+1, 0);
4171 (void)hv_store(hv, old_var, s - old_var, sv, 0);
4172 if (env_is_not_environ)
4176 #endif /* USE_ENVIRON_ARRAY */
4177 #endif /* !PERL_MICRO */
4180 #ifdef THREADS_HAVE_PIDS
4181 PL_ppid = (IV)getppid();
4184 /* touch @F array to prevent spurious warnings 20020415 MJD */
4186 (void) get_av("main::F", GV_ADD | GV_ADDMULTI);
4191 S_init_perllib(pTHX)
4195 const char *perl5lib = NULL;
4198 #if defined(WIN32) && !defined(PERL_IS_MINIPERL)
4204 perl5lib = PerlEnv_getenv("PERL5LIB");
4206 * It isn't possible to delete an environment variable with
4207 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4208 * case we treat PERL5LIB as undefined if it has a zero-length value.
4210 #if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
4211 if (perl5lib && *perl5lib != '\0')
4215 incpush_use_sep(perl5lib, 0, INCPUSH_ADD_SUB_DIRS);
4217 s = PerlEnv_getenv("PERLLIB");
4219 incpush_use_sep(s, 0, 0);
4222 /* Treat PERL5?LIB as a possible search list logical name -- the
4223 * "natural" VMS idiom for a Unix path string. We allow each
4224 * element to be a set of |-separated directories for compatibility.
4228 if (my_trnlnm("PERL5LIB",buf,0))
4230 incpush_use_sep(buf, 0, INCPUSH_ADD_SUB_DIRS);
4231 } while (my_trnlnm("PERL5LIB",buf,++idx));
4233 while (my_trnlnm("PERLLIB",buf,idx++))
4234 incpush_use_sep(buf, 0, 0);
4239 #ifndef PERL_IS_MINIPERL
4240 /* miniperl gets just -I..., the split of $ENV{PERL5LIB}, and "." in @INC
4241 (and not the architecture specific directories from $ENV{PERL5LIB}) */
4243 /* Use the ~-expanded versions of APPLLIB (undocumented),
4244 SITEARCH, SITELIB, VENDORARCH, VENDORLIB, ARCHLIB and PRIVLIB
4247 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP),
4248 INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4252 /* sitearch is always relative to sitelib on Windows for
4253 * DLL-based path intuition to work correctly */
4254 # if !defined(WIN32)
4255 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITEARCH_EXP),
4256 INCPUSH_CAN_RELOCATE);
4262 /* this picks up sitearch as well */
4263 s = win32_get_sitelib(PERL_FS_VERSION, &len);
4265 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4267 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_EXP), INCPUSH_CAN_RELOCATE);
4271 #ifdef PERL_VENDORARCH_EXP
4272 /* vendorarch is always relative to vendorlib on Windows for
4273 * DLL-based path intuition to work correctly */
4274 # if !defined(WIN32)
4275 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORARCH_EXP),
4276 INCPUSH_CAN_RELOCATE);
4280 #ifdef PERL_VENDORLIB_EXP
4282 /* this picks up vendorarch as well */
4283 s = win32_get_vendorlib(PERL_FS_VERSION, &len);
4285 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4287 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_EXP),
4288 INCPUSH_CAN_RELOCATE);
4293 S_incpush_use_sep(aTHX_ STR_WITH_LEN(ARCHLIB_EXP), INCPUSH_CAN_RELOCATE);
4297 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
4301 s = win32_get_privlib(PERL_FS_VERSION, &len);
4303 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4306 S_incpush_use_sep(aTHX_ PRIVLIB_EXP, 0, INCPUSH_CAN_RELOCATE);
4308 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PRIVLIB_EXP), INCPUSH_CAN_RELOCATE);
4312 #ifdef PERL_OTHERLIBDIRS
4313 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS),
4314 INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_NOT_BASEDIR
4315 |INCPUSH_CAN_RELOCATE);
4321 * It isn't possible to delete an environment variable with
4322 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4323 * case we treat PERL5LIB as undefined if it has a zero-length value.
4325 #if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
4326 if (perl5lib && *perl5lib != '\0')
4330 incpush_use_sep(perl5lib, 0,
4331 INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
4333 /* Treat PERL5?LIB as a possible search list logical name -- the
4334 * "natural" VMS idiom for a Unix path string. We allow each
4335 * element to be a set of |-separated directories for compatibility.
4339 if (my_trnlnm("PERL5LIB",buf,0))
4341 incpush_use_sep(buf, 0,
4342 INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
4343 } while (my_trnlnm("PERL5LIB",buf,++idx));
4347 /* Use the ~-expanded versions of APPLLIB (undocumented),
4348 SITELIB and VENDORLIB for older versions
4351 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP), INCPUSH_ADD_OLD_VERS
4352 |INCPUSH_NOT_BASEDIR|INCPUSH_CAN_RELOCATE);
4355 #if defined(SITELIB_STEM) && defined(PERL_INC_VERSION_LIST)
4356 /* Search for version-specific dirs below here */
4357 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_STEM),
4358 INCPUSH_ADD_OLD_VERS|INCPUSH_CAN_RELOCATE);
4362 #if defined(PERL_VENDORLIB_STEM) && defined(PERL_INC_VERSION_LIST)
4363 /* Search for version-specific dirs below here */
4364 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_STEM),
4365 INCPUSH_ADD_OLD_VERS|INCPUSH_CAN_RELOCATE);
4368 #ifdef PERL_OTHERLIBDIRS
4369 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS),
4370 INCPUSH_ADD_OLD_VERS|INCPUSH_ADD_ARCHONLY_SUB_DIRS
4371 |INCPUSH_CAN_RELOCATE);
4373 #endif /* !PERL_IS_MINIPERL */
4376 S_incpush(aTHX_ STR_WITH_LEN("."), 0);
4379 #if defined(DOSISH) || defined(EPOC) || defined(__SYMBIAN32__)
4380 # define PERLLIB_SEP ';'
4383 # define PERLLIB_SEP '|'
4385 # define PERLLIB_SEP ':'
4388 #ifndef PERLLIB_MANGLE
4389 # define PERLLIB_MANGLE(s,n) (s)
4392 #ifndef PERL_IS_MINIPERL
4393 /* Push a directory onto @INC if it exists.
4394 Generate a new SV if we do this, to save needing to copy the SV we push
4397 S_incpush_if_exists(pTHX_ AV *const av, SV *dir, SV *const stem)
4402 PERL_ARGS_ASSERT_INCPUSH_IF_EXISTS;
4404 if (PerlLIO_stat(SvPVX_const(dir), &tmpstatbuf) >= 0 &&
4405 S_ISDIR(tmpstatbuf.st_mode)) {
4407 dir = newSVsv(stem);
4409 /* Truncate dir back to stem. */
4410 SvCUR_set(dir, SvCUR(stem));
4417 S_incpush(pTHX_ const char *const dir, STRLEN len, U32 flags)
4420 #ifndef PERL_IS_MINIPERL
4421 const U8 using_sub_dirs
4422 = (U8)flags & (INCPUSH_ADD_VERSIONED_SUB_DIRS
4423 |INCPUSH_ADD_ARCHONLY_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
4424 const U8 add_versioned_sub_dirs
4425 = (U8)flags & INCPUSH_ADD_VERSIONED_SUB_DIRS;
4426 const U8 add_archonly_sub_dirs
4427 = (U8)flags & INCPUSH_ADD_ARCHONLY_SUB_DIRS;
4428 #ifdef PERL_INC_VERSION_LIST
4429 const U8 addoldvers = (U8)flags & INCPUSH_ADD_OLD_VERS;
4432 const U8 canrelocate = (U8)flags & INCPUSH_CAN_RELOCATE;
4433 const U8 unshift = (U8)flags & INCPUSH_UNSHIFT;
4434 const U8 push_basedir = (flags & INCPUSH_NOT_BASEDIR) ? 0 : 1;
4435 AV *const inc = GvAVn(PL_incgv);
4437 PERL_ARGS_ASSERT_INCPUSH;
4440 /* Could remove this vestigial extra block, if we don't mind a lot of
4441 re-indenting diff noise. */
4444 /* Change 20189146be79a0596543441fa369c6bf7f85103f, to fix RT#6665,
4445 arranged to unshift #! line -I onto the front of @INC. However,
4446 -I can add version and architecture specific libraries, and they
4447 need to go first. The old code assumed that it was always
4448 pushing. Hence to make it work, need to push the architecture
4449 (etc) libraries onto a temporary array, then "unshift" that onto
4450 the front of @INC. */
4451 #ifndef PERL_IS_MINIPERL
4452 AV *const av = (using_sub_dirs) ? (unshift ? newAV() : inc) : NULL;
4456 /* I am not convinced that this is valid when PERLLIB_MANGLE is
4457 defined to so something (in os2/os2.c), but the code has been
4458 this way, ignoring any possible changed of length, since
4459 760ac839baf413929cd31cc32ffd6dba6b781a81 (5.003_02) so I'll leave
4461 libdir = newSVpvn(PERLLIB_MANGLE(dir, len), len);
4463 libdir = newSVpv(PERLLIB_MANGLE(dir, 0), 0);
4470 if ((unix = tounixspec_ts(SvPV(libdir,len),NULL)) != NULL) {
4472 while (unix[len-1] == '/') len--; /* Cosmetic */
4473 sv_usepvn(libdir,unix,len);
4476 PerlIO_printf(Perl_error_log,
4477 "Failed to unixify @INC element \"%s\"\n",
4481 /* Do the if() outside the #ifdef to avoid warnings about an unused
4484 #ifdef PERL_RELOCATABLE_INC
4486 * Relocatable include entries are marked with a leading .../
4489 * 0: Remove that leading ".../"
4490 * 1: Remove trailing executable name (anything after the last '/')
4491 * from the perl path to give a perl prefix
4493 * While the @INC element starts "../" and the prefix ends with a real
4494 * directory (ie not . or ..) chop that real directory off the prefix
4495 * and the leading "../" from the @INC element. ie a logical "../"
4497 * Finally concatenate the prefix and the remainder of the @INC element
4498 * The intent is that /usr/local/bin/perl and .../../lib/perl5
4499 * generates /usr/local/lib/perl5
4501 const char *libpath = SvPVX(libdir);
4502 STRLEN libpath_len = SvCUR(libdir);
4503 if (libpath_len >= 4 && memEQ (libpath, ".../", 4)) {
4505 SV * const caret_X = get_sv("\030", 0);
4506 /* Going to use the SV just as a scratch buffer holding a C
4512 /* $^X is *the* source of taint if tainting is on, hence
4513 SvPOK() won't be true. */
4515 assert(SvPOKp(caret_X));
4516 prefix_sv = newSVpvn_flags(SvPVX(caret_X), SvCUR(caret_X),
4518 /* Firstly take off the leading .../
4519 If all else fail we'll do the paths relative to the current
4521 sv_chop(libdir, libpath + 4);
4522 /* Don't use SvPV as we're intentionally bypassing taining,
4523 mortal copies that the mg_get of tainting creates, and
4524 corruption that seems to come via the save stack.
4525 I guess that the save stack isn't correctly set up yet. */
4526 libpath = SvPVX(libdir);
4527 libpath_len = SvCUR(libdir);
4529 /* This would work more efficiently with memrchr, but as it's
4530 only a GNU extension we'd need to probe for it and
4531 implement our own. Not hard, but maybe not worth it? */
4533 prefix = SvPVX(prefix_sv);
4534 lastslash = strrchr(prefix, '/');
4536 /* First time in with the *lastslash = '\0' we just wipe off
4537 the trailing /perl from (say) /usr/foo/bin/perl
4541 while ((*lastslash = '\0'), /* Do that, come what may. */
4542 (libpath_len >= 3 && memEQ(libpath, "../", 3)
4543 && (lastslash = strrchr(prefix, '/')))) {
4544 if (lastslash[1] == '\0'
4545 || (lastslash[1] == '.'
4546 && (lastslash[2] == '/' /* ends "/." */
4547 || (lastslash[2] == '/'
4548 && lastslash[3] == '/' /* or "/.." */
4550 /* Prefix ends "/" or "/." or "/..", any of which
4551 are fishy, so don't do any more logical cleanup.
4555 /* Remove leading "../" from path */
4558 /* Next iteration round the loop removes the last
4559 directory name from prefix by writing a '\0' in
4560 the while clause. */
4562 /* prefix has been terminated with a '\0' to the correct
4563 length. libpath points somewhere into the libdir SV.
4564 We need to join the 2 with '/' and drop the result into
4566 tempsv = Perl_newSVpvf(aTHX_ "%s/%s", prefix, libpath);
4567 SvREFCNT_dec(libdir);
4568 /* And this is the new libdir. */
4571 (PL_uid != PL_euid || PL_gid != PL_egid)) {
4572 /* Need to taint relocated paths if running set ID */
4573 SvTAINTED_on(libdir);
4576 SvREFCNT_dec(prefix_sv);
4580 #ifndef PERL_IS_MINIPERL
4582 * BEFORE pushing libdir onto @INC we may first push version- and
4583 * archname-specific sub-directories.
4585 if (using_sub_dirs) {
4587 #ifdef PERL_INC_VERSION_LIST
4588 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
4589 const char * const incverlist[] = { PERL_INC_VERSION_LIST };
4590 const char * const *incver;
4592 subdir = newSVsv(libdir);
4594 if (add_versioned_sub_dirs) {
4595 /* .../version/archname if -d .../version/archname */
4596 sv_catpvs(subdir, "/" PERL_FS_VERSION "/" ARCHNAME);
4597 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4599 /* .../version if -d .../version */
4600 sv_catpvs(subdir, "/" PERL_FS_VERSION);
4601 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4604 #ifdef PERL_INC_VERSION_LIST
4606 for (incver = incverlist; *incver; incver++) {
4607 /* .../xxx if -d .../xxx */
4608 Perl_sv_catpvf(aTHX_ subdir, "/%s", *incver);
4609 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4614 if (add_archonly_sub_dirs) {
4615 /* .../archname if -d .../archname */
4616 sv_catpvs(subdir, "/" ARCHNAME);
4617 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4621 assert (SvREFCNT(subdir) == 1);
4622 SvREFCNT_dec(subdir);
4624 #endif /* !PERL_IS_MINIPERL */
4625 /* finally add this lib directory at the end of @INC */
4627 #ifdef PERL_IS_MINIPERL
4628 const U32 extra = 0;
4630 U32 extra = av_len(av) + 1;
4632 av_unshift(inc, extra + push_basedir);
4634 av_store(inc, extra, libdir);
4635 #ifndef PERL_IS_MINIPERL
4637 /* av owns a reference, av_store() expects to be donated a
4638 reference, and av expects to be sane when it's cleared.
4639 If I wanted to be naughty and wrong, I could peek inside the
4640 implementation of av_clear(), realise that it uses
4641 SvREFCNT_dec() too, so av's array could be a run of NULLs,
4642 and so directly steal from it (with a memcpy() to inc, and
4643 then memset() to NULL them out. But people copy code from the
4644 core expecting it to be best practise, so let's use the API.
4645 Although studious readers will note that I'm not checking any
4647 av_store(inc, extra, SvREFCNT_inc(*av_fetch(av, extra, FALSE)));
4652 else if (push_basedir) {
4653 av_push(inc, libdir);
4656 if (!push_basedir) {
4657 assert (SvREFCNT(libdir) == 1);
4658 SvREFCNT_dec(libdir);
4664 S_incpush_use_sep(pTHX_ const char *p, STRLEN len, U32 flags)
4668 /* This logic has been broken out from S_incpush(). It may be possible to
4671 PERL_ARGS_ASSERT_INCPUSH_USE_SEP;
4673 /* perl compiled with -DPERL_RELOCATABLE_INCPUSH will ignore the len
4674 * argument to incpush_use_sep. This allows creation of relocatable
4675 * Perl distributions that patch the binary at install time. Those
4676 * distributions will have to provide their own relocation tools; this
4677 * is not a feature otherwise supported by core Perl.
4679 #ifndef PERL_RELOCATABLE_INCPUSH
4686 /* Break at all separators */
4687 while ((s = (const char*)memchr(p, PERLLIB_SEP, end - p))) {
4689 /* skip any consecutive separators */
4691 /* Uncomment the next line for PATH semantics */
4692 /* But you'll need to write tests */
4693 /* av_push(GvAVn(PL_incgv), newSVpvs(".")); */
4695 incpush(p, (STRLEN)(s - p), flags);
4700 incpush(p, (STRLEN)(end - p), flags);
4705 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
4709 volatile const line_t oldline = PL_curcop ? CopLINE(PL_curcop) : 0;
4715 PERL_ARGS_ASSERT_CALL_LIST;
4717 while (av_len(paramList) >= 0) {
4718 cv = MUTABLE_CV(av_shift(paramList));
4720 if (paramList == PL_beginav) {
4721 /* save PL_beginav for compiler */
4722 Perl_av_create_and_push(aTHX_ &PL_beginav_save, MUTABLE_SV(cv));
4724 else if (paramList == PL_checkav) {
4725 /* save PL_checkav for compiler */
4726 Perl_av_create_and_push(aTHX_ &PL_checkav_save, MUTABLE_SV(cv));
4728 else if (paramList == PL_unitcheckav) {
4729 /* save PL_unitcheckav for compiler */
4730 Perl_av_create_and_push(aTHX_ &PL_unitcheckav_save, MUTABLE_SV(cv));
4741 PL_madskills |= 16384;
4746 PL_madskills &= ~16384;
4749 (void)SvPV_const(atsv, len);
4751 PL_curcop = &PL_compiling;
4752 CopLINE_set(PL_curcop, oldline);
4753 if (paramList == PL_beginav)
4754 sv_catpvs(atsv, "BEGIN failed--compilation aborted");
4756 Perl_sv_catpvf(aTHX_ atsv,
4757 "%s failed--call queue aborted",
4758 paramList == PL_checkav ? "CHECK"
4759 : paramList == PL_initav ? "INIT"
4760 : paramList == PL_unitcheckav ? "UNITCHECK"
4762 while (PL_scopestack_ix > oldscope)
4765 Perl_croak(aTHX_ "%"SVf"", SVfARG(atsv));
4772 /* my_exit() was called */
4773 while (PL_scopestack_ix > oldscope)
4776 PL_curstash = PL_defstash;
4777 PL_curcop = &PL_compiling;
4778 CopLINE_set(PL_curcop, oldline);
4784 PL_curcop = &PL_compiling;
4785 CopLINE_set(PL_curcop, oldline);
4788 PerlIO_printf(Perl_error_log, "panic: restartop\n");
4797 Perl_my_exit(pTHX_ U32 status)
4808 STATUS_EXIT_SET(status);
4815 Perl_my_failure_exit(pTHX)
4819 /* We have been called to fall on our sword. The desired exit code
4820 * should be already set in STATUS_UNIX, but could be shifted over
4821 * by 8 bits. STATUS_UNIX_EXIT_SET will handle the cases where a
4824 * If an error code has not been set, then force the issue.
4826 if (MY_POSIX_EXIT) {
4828 /* According to the die_exit.t tests, if errno is non-zero */
4829 /* It should be used for the error status. */
4831 if (errno == EVMSERR) {
4832 STATUS_NATIVE = vaxc$errno;
4835 /* According to die_exit.t tests, if the child_exit code is */
4836 /* also zero, then we need to exit with a code of 255 */
4837 if ((errno != 0) && (errno < 256))
4838 STATUS_UNIX_EXIT_SET(errno);
4839 else if (STATUS_UNIX < 255) {
4840 STATUS_UNIX_EXIT_SET(255);
4845 /* The exit code could have been set by $? or vmsish which
4846 * means that it may not have fatal set. So convert
4847 * success/warning codes to fatal with out changing
4848 * the POSIX status code. The severity makes VMS native
4849 * status handling work, while UNIX mode programs use the
4850 * the POSIX exit codes.
4852 if ((STATUS_NATIVE & (STS$K_SEVERE|STS$K_ERROR)) == 0) {
4853 STATUS_NATIVE &= STS$M_COND_ID;
4854 STATUS_NATIVE |= STS$K_ERROR | STS$M_INHIB_MSG;
4858 /* Traditionally Perl on VMS always expects a Fatal Error. */
4859 if (vaxc$errno & 1) {
4861 /* So force success status to failure */
4862 if (STATUS_NATIVE & 1)
4867 STATUS_UNIX = EINTR; /* In case something cares */
4872 STATUS_NATIVE = vaxc$errno; /* Should already be this */
4874 /* Encode the severity code */
4875 severity = STATUS_NATIVE & STS$M_SEVERITY;
4876 STATUS_UNIX = (severity ? severity : 1) << 8;
4878 /* Perl expects this to be a fatal error */
4879 if (severity != STS$K_SEVERE)
4888 STATUS_UNIX_SET(errno);
4890 exitstatus = STATUS_UNIX >> 8;
4891 if (exitstatus & 255)
4892 STATUS_UNIX_SET(exitstatus);
4894 STATUS_UNIX_SET(255);
4901 S_my_exit_jump(pTHX)
4906 SvREFCNT_dec(PL_e_script);
4910 POPSTACK_TO(PL_mainstack);
4918 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen)
4921 const char * const p = SvPVX_const(PL_e_script);
4922 const char *nl = strchr(p, '\n');
4924 PERL_UNUSED_ARG(idx);
4925 PERL_UNUSED_ARG(maxlen);
4927 nl = (nl) ? nl+1 : SvEND(PL_e_script);
4929 filter_del(read_e_script);
4932 sv_catpvn(buf_sv, p, nl-p);
4933 sv_chop(PL_e_script, nl);
4939 * c-indentation-style: bsd
4941 * indent-tabs-mode: t
4944 * ex: set ts=8 sts=4 sw=4 noet: