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 /* XXX If this causes problems, set i_unistd=undef in the hint file. */
46 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
48 # include <sys/wait.h>
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 PL_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 PL_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 */
908 /* clean up after study() */
909 SvREFCNT_dec(PL_lastscream);
910 PL_lastscream = NULL;
911 Safefree(PL_screamfirst);
913 Safefree(PL_screamnext);
917 Safefree(PL_efloatbuf);
921 /* startup and shutdown function lists */
922 SvREFCNT_dec(PL_beginav);
923 SvREFCNT_dec(PL_beginav_save);
924 SvREFCNT_dec(PL_endav);
925 SvREFCNT_dec(PL_checkav);
926 SvREFCNT_dec(PL_checkav_save);
927 SvREFCNT_dec(PL_unitcheckav);
928 SvREFCNT_dec(PL_unitcheckav_save);
929 SvREFCNT_dec(PL_initav);
931 PL_beginav_save = NULL;
934 PL_checkav_save = NULL;
935 PL_unitcheckav = NULL;
936 PL_unitcheckav_save = NULL;
939 /* shortcuts just get cleared */
948 PL_last_in_gv = NULL;
960 SvREFCNT_dec(PL_argvout_stack);
961 PL_argvout_stack = NULL;
963 SvREFCNT_dec(PL_modglobal);
965 SvREFCNT_dec(PL_preambleav);
966 PL_preambleav = NULL;
967 SvREFCNT_dec(PL_subname);
969 #ifdef PERL_USES_PL_PIDSTATUS
970 SvREFCNT_dec(PL_pidstatus);
973 SvREFCNT_dec(PL_toptarget);
975 SvREFCNT_dec(PL_bodytarget);
976 PL_bodytarget = NULL;
977 PL_formtarget = NULL;
979 /* free locale stuff */
980 #ifdef USE_LOCALE_COLLATE
981 Safefree(PL_collation_name);
982 PL_collation_name = NULL;
985 #ifdef USE_LOCALE_NUMERIC
986 Safefree(PL_numeric_name);
987 PL_numeric_name = NULL;
988 SvREFCNT_dec(PL_numeric_radix_sv);
989 PL_numeric_radix_sv = NULL;
992 /* clear utf8 character classes */
993 SvREFCNT_dec(PL_utf8_alnum);
994 SvREFCNT_dec(PL_utf8_ascii);
995 SvREFCNT_dec(PL_utf8_alpha);
996 SvREFCNT_dec(PL_utf8_space);
997 SvREFCNT_dec(PL_utf8_cntrl);
998 SvREFCNT_dec(PL_utf8_graph);
999 SvREFCNT_dec(PL_utf8_digit);
1000 SvREFCNT_dec(PL_utf8_upper);
1001 SvREFCNT_dec(PL_utf8_lower);
1002 SvREFCNT_dec(PL_utf8_print);
1003 SvREFCNT_dec(PL_utf8_punct);
1004 SvREFCNT_dec(PL_utf8_xdigit);
1005 SvREFCNT_dec(PL_utf8_mark);
1006 SvREFCNT_dec(PL_utf8_toupper);
1007 SvREFCNT_dec(PL_utf8_totitle);
1008 SvREFCNT_dec(PL_utf8_tolower);
1009 SvREFCNT_dec(PL_utf8_tofold);
1010 SvREFCNT_dec(PL_utf8_idstart);
1011 SvREFCNT_dec(PL_utf8_idcont);
1012 SvREFCNT_dec(PL_utf8_foldclosures);
1013 PL_utf8_alnum = NULL;
1014 PL_utf8_ascii = NULL;
1015 PL_utf8_alpha = NULL;
1016 PL_utf8_space = NULL;
1017 PL_utf8_cntrl = NULL;
1018 PL_utf8_graph = NULL;
1019 PL_utf8_digit = NULL;
1020 PL_utf8_upper = NULL;
1021 PL_utf8_lower = NULL;
1022 PL_utf8_print = NULL;
1023 PL_utf8_punct = NULL;
1024 PL_utf8_xdigit = NULL;
1025 PL_utf8_mark = NULL;
1026 PL_utf8_toupper = NULL;
1027 PL_utf8_totitle = NULL;
1028 PL_utf8_tolower = NULL;
1029 PL_utf8_tofold = NULL;
1030 PL_utf8_idstart = NULL;
1031 PL_utf8_idcont = NULL;
1032 PL_utf8_foldclosures = NULL;
1034 if (!specialWARN(PL_compiling.cop_warnings))
1035 PerlMemShared_free(PL_compiling.cop_warnings);
1036 PL_compiling.cop_warnings = NULL;
1037 cophh_free(CopHINTHASH_get(&PL_compiling));
1038 CopHINTHASH_set(&PL_compiling, cophh_new_empty());
1039 CopFILE_free(&PL_compiling);
1040 CopSTASH_free(&PL_compiling);
1042 /* Prepare to destruct main symbol table. */
1045 /* break ref loop *:: <=> %:: */
1046 (void)hv_delete(hv, "main::", 6, G_DISCARD);
1049 SvREFCNT_dec(PL_curstname);
1050 PL_curstname = NULL;
1052 /* clear queued errors */
1053 SvREFCNT_dec(PL_errors);
1056 SvREFCNT_dec(PL_isarev);
1059 if (destruct_level >= 2) {
1060 if (PL_scopestack_ix != 0)
1061 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1062 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1063 (long)PL_scopestack_ix);
1064 if (PL_savestack_ix != 0)
1065 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1066 "Unbalanced saves: %ld more saves than restores\n",
1067 (long)PL_savestack_ix);
1068 if (PL_tmps_floor != -1)
1069 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1070 (long)PL_tmps_floor + 1);
1071 if (cxstack_ix != -1)
1072 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1073 (long)cxstack_ix + 1);
1076 #ifdef PERL_IMPLICIT_CONTEXT
1077 /* the entries in this list are allocated via SV PVX's, so get freed
1078 * in sv_clean_all */
1079 Safefree(PL_my_cxt_list);
1082 /* Now absolutely destruct everything, somehow or other, loops or no. */
1084 /* the 2 is for PL_fdpid and PL_strtab */
1085 while (sv_clean_all() > 2)
1088 AvREAL_off(PL_fdpid); /* no surviving entries */
1089 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
1092 #ifdef HAVE_INTERP_INTERN
1096 /* Destruct the global string table. */
1098 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1099 * so that sv_free() won't fail on them.
1100 * Now that the global string table is using a single hunk of memory
1101 * for both HE and HEK, we either need to explicitly unshare it the
1102 * correct way, or actually free things here.
1105 const I32 max = HvMAX(PL_strtab);
1106 HE * const * const array = HvARRAY(PL_strtab);
1107 HE *hent = array[0];
1110 if (hent && ckWARN_d(WARN_INTERNAL)) {
1111 HE * const next = HeNEXT(hent);
1112 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
1113 "Unbalanced string table refcount: (%ld) for \"%s\"",
1114 (long)hent->he_valu.hent_refcount, HeKEY(hent));
1121 hent = array[riter];
1126 HvARRAY(PL_strtab) = 0;
1127 HvTOTALKEYS(PL_strtab) = 0;
1129 SvREFCNT_dec(PL_strtab);
1132 /* free the pointer tables used for cloning */
1133 ptr_table_free(PL_ptr_table);
1134 PL_ptr_table = (PTR_TBL_t*)NULL;
1137 /* free special SVs */
1139 SvREFCNT(&PL_sv_yes) = 0;
1140 sv_clear(&PL_sv_yes);
1141 SvANY(&PL_sv_yes) = NULL;
1142 SvFLAGS(&PL_sv_yes) = 0;
1144 SvREFCNT(&PL_sv_no) = 0;
1145 sv_clear(&PL_sv_no);
1146 SvANY(&PL_sv_no) = NULL;
1147 SvFLAGS(&PL_sv_no) = 0;
1151 for (i=0; i<=2; i++) {
1152 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1153 sv_clear(PERL_DEBUG_PAD(i));
1154 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1155 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1159 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
1160 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
1162 #ifdef DEBUG_LEAKING_SCALARS
1163 if (PL_sv_count != 0) {
1168 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
1169 svend = &sva[SvREFCNT(sva)];
1170 for (sv = sva + 1; sv < svend; ++sv) {
1171 if (SvTYPE(sv) != SVTYPEMASK) {
1172 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
1174 " refcnt=%"UVuf pTHX__FORMAT "\n"
1175 "\tallocated at %s:%d %s %s (parent 0x%"UVxf");"
1177 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1179 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1181 sv->sv_debug_inpad ? "for" : "by",
1182 sv->sv_debug_optype ?
1183 PL_op_name[sv->sv_debug_optype]: "(none)",
1184 PTR2UV(sv->sv_debug_parent),
1187 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1188 Perl_dump_sv_child(aTHX_ sv);
1194 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1198 /* Wait for up to 4 seconds for child to terminate.
1199 This seems to be the least effort way of timing out on reaping
1201 struct timeval waitfor = {4, 0};
1202 int sock = PL_dumper_fd;
1206 FD_SET(sock, &rset);
1207 select(sock + 1, &rset, NULL, NULL, &waitfor);
1208 waitpid(child, &status, WNOHANG);
1213 #ifdef DEBUG_LEAKING_SCALARS_ABORT
1219 #ifdef PERL_DEBUG_READONLY_OPS
1225 #if defined(PERLIO_LAYERS)
1226 /* No more IO - including error messages ! */
1227 PerlIO_cleanup(aTHX);
1230 /* sv_undef needs to stay immortal until after PerlIO_cleanup
1231 as currently layers use it rather than NULL as a marker
1232 for no arg - and will try and SvREFCNT_dec it.
1234 SvREFCNT(&PL_sv_undef) = 0;
1235 SvREADONLY_off(&PL_sv_undef);
1237 Safefree(PL_origfilename);
1238 PL_origfilename = NULL;
1239 Safefree(PL_reg_start_tmp);
1240 PL_reg_start_tmp = (char**)NULL;
1241 PL_reg_start_tmpl = 0;
1242 Safefree(PL_reg_curpm);
1243 Safefree(PL_reg_poscache);
1244 free_tied_hv_pool();
1245 Safefree(PL_op_mask);
1246 Safefree(PL_psig_name);
1247 PL_psig_name = (SV**)NULL;
1248 PL_psig_ptr = (SV**)NULL;
1250 /* We need to NULL PL_psig_pend first, so that
1251 signal handlers know not to use it */
1252 int *psig_save = PL_psig_pend;
1253 PL_psig_pend = (int*)NULL;
1254 Safefree(psig_save);
1258 PL_tainting = FALSE;
1259 PL_taint_warn = FALSE;
1260 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
1263 DEBUG_P(debprofdump());
1265 #ifdef USE_REENTRANT_API
1266 Perl_reentrant_free(aTHX);
1271 while (PL_regmatch_slab) {
1272 regmatch_slab *s = PL_regmatch_slab;
1273 PL_regmatch_slab = PL_regmatch_slab->next;
1277 /* As the absolutely last thing, free the non-arena SV for mess() */
1280 /* we know that type == SVt_PVMG */
1282 /* it could have accumulated taint magic */
1285 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1286 moremagic = mg->mg_moremagic;
1287 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1289 Safefree(mg->mg_ptr);
1293 /* we know that type >= SVt_PV */
1294 SvPV_free(PL_mess_sv);
1295 Safefree(SvANY(PL_mess_sv));
1296 Safefree(PL_mess_sv);
1303 =for apidoc perl_free
1305 Releases a Perl interpreter. See L<perlembed>.
1315 PERL_ARGS_ASSERT_PERL_FREE;
1317 if (PL_veto_cleanup)
1320 #ifdef PERL_TRACK_MEMPOOL
1323 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1324 * value as we're probably hunting memory leaks then
1326 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
1327 if (!s || atoi(s) == 0) {
1328 const U32 old_debug = PL_debug;
1329 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1330 thread at thread exit. */
1332 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1333 "free this thread's memory\n");
1334 PL_debug &= ~ DEBUG_m_FLAG;
1336 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
1337 safesysfree(sTHX + (char *)(aTHXx->Imemory_debug_header.next));
1338 PL_debug = old_debug;
1343 #if defined(WIN32) || defined(NETWARE)
1344 # if defined(PERL_IMPLICIT_SYS)
1347 void *host = nw_internal_host;
1349 void *host = w32_internal_host;
1351 PerlMem_free(aTHXx);
1353 nw_delete_internal_host(host);
1355 win32_delete_internal_host(host);
1359 PerlMem_free(aTHXx);
1362 PerlMem_free(aTHXx);
1366 #if defined(USE_ITHREADS)
1367 /* provide destructors to clean up the thread key when libperl is unloaded */
1368 #ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1370 #if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
1371 #pragma fini "perl_fini"
1372 #elif defined(__sun) && !defined(__GNUC__)
1373 #pragma fini (perl_fini)
1377 #if defined(__GNUC__)
1378 __attribute__((destructor))
1383 if (PL_curinterp && !PL_veto_cleanup)
1388 #endif /* THREADS */
1391 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
1394 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1395 PL_exitlist[PL_exitlistlen].fn = fn;
1396 PL_exitlist[PL_exitlistlen].ptr = ptr;
1400 #ifdef HAS_PROCSELFEXE
1401 /* This is a function so that we don't hold on to MAXPATHLEN
1402 bytes of stack longer than necessary
1405 S_procself_val(pTHX_ SV *sv, const char *arg0)
1407 char buf[MAXPATHLEN];
1408 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1410 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1411 includes a spurious NUL which will cause $^X to fail in system
1412 or backticks (this will prevent extensions from being built and
1413 many tests from working). readlink is not meant to add a NUL.
1414 Normal readlink works fine.
1416 if (len > 0 && buf[len-1] == '\0') {
1420 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1421 returning the text "unknown" from the readlink rather than the path
1422 to the executable (or returning an error from the readlink). Any valid
1423 path has a '/' in it somewhere, so use that to validate the result.
1424 See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1426 if (len > 0 && memchr(buf, '/', len)) {
1427 sv_setpvn(sv,buf,len);
1433 #endif /* HAS_PROCSELFEXE */
1436 S_set_caret_X(pTHX) {
1438 GV* tmpgv = gv_fetchpvs("\030", GV_ADD|GV_NOTQUAL, SVt_PV); /* $^X */
1440 #ifdef HAS_PROCSELFEXE
1441 S_procself_val(aTHX_ GvSV(tmpgv), PL_origargv[0]);
1444 sv_setpv(GvSVn(tmpgv), os2_execname(aTHX));
1446 sv_setpv(GvSVn(tmpgv),PL_origargv[0]);
1453 =for apidoc perl_parse
1455 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1461 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
1468 PERL_ARGS_ASSERT_PERL_PARSE;
1469 #ifndef MULTIPLICITY
1470 PERL_UNUSED_ARG(my_perl);
1473 #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
1474 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
1475 * This MUST be done before any hash stores or fetches take place.
1476 * If you set PL_rehash_seed (and presumably also PL_rehash_seed_set)
1477 * yourself, it is your responsibility to provide a good random seed!
1478 * You can also define PERL_HASH_SEED in compile time, see hv.h. */
1479 if (!PL_rehash_seed_set)
1480 PL_rehash_seed = get_hash_seed();
1482 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
1484 if (s && (atoi(s) == 1))
1485 PerlIO_printf(Perl_debug_log, "HASH_SEED = %"UVuf"\n", PL_rehash_seed);
1487 #endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1492 if (PL_origalen != 0) {
1493 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1496 /* Set PL_origalen be the sum of the contiguous argv[]
1497 * elements plus the size of the env in case that it is
1498 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
1499 * as the maximum modifiable length of $0. In the worst case
1500 * the area we are able to modify is limited to the size of
1501 * the original argv[0]. (See below for 'contiguous', though.)
1503 const char *s = NULL;
1506 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
1507 /* Do the mask check only if the args seem like aligned. */
1509 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1511 /* See if all the arguments are contiguous in memory. Note
1512 * that 'contiguous' is a loose term because some platforms
1513 * align the argv[] and the envp[]. If the arguments look
1514 * like non-aligned, assume that they are 'strictly' or
1515 * 'traditionally' contiguous. If the arguments look like
1516 * aligned, we just check that they are within aligned
1517 * PTRSIZE bytes. As long as no system has something bizarre
1518 * like the argv[] interleaved with some other data, we are
1519 * fine. (Did I just evoke Murphy's Law?) --jhi */
1520 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1522 for (i = 1; i < PL_origargc; i++) {
1523 if ((PL_origargv[i] == s + 1
1525 || PL_origargv[i] == s + 2
1530 (PL_origargv[i] > s &&
1532 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1543 #ifndef PERL_USE_SAFE_PUTENV
1544 /* Can we grab env area too to be used as the area for $0? */
1545 if (s && PL_origenviron && !PL_use_safe_putenv) {
1546 if ((PL_origenviron[0] == s + 1)
1549 (PL_origenviron[0] > s &&
1550 PL_origenviron[0] <=
1551 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1554 #ifndef OS2 /* ENVIRON is read by the kernel too. */
1555 s = PL_origenviron[0];
1558 my_setenv("NoNe SuCh", NULL);
1559 /* Force copy of environment. */
1560 for (i = 1; PL_origenviron[i]; i++) {
1561 if (PL_origenviron[i] == s + 1
1564 (PL_origenviron[i] > s &&
1565 PL_origenviron[i] <=
1566 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1569 s = PL_origenviron[i];
1577 #endif /* !defined(PERL_USE_SAFE_PUTENV) */
1579 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
1584 /* Come here if running an undumped a.out. */
1586 PL_origfilename = savepv(argv[0]);
1587 PL_do_undump = FALSE;
1588 cxstack_ix = -1; /* start label stack again */
1590 assert (!PL_tainted);
1592 S_set_caret_X(aTHX);
1594 init_postdump_symbols(argc,argv,env);
1599 op_free(PL_main_root);
1600 PL_main_root = NULL;
1602 PL_main_start = NULL;
1603 SvREFCNT_dec(PL_main_cv);
1607 oldscope = PL_scopestack_ix;
1608 PL_dowarn = G_WARN_OFF;
1613 parse_body(env,xsinit);
1614 if (PL_unitcheckav) {
1615 call_list(oldscope, PL_unitcheckav);
1618 PL_phase = PERL_PHASE_CHECK;
1619 call_list(oldscope, PL_checkav);
1627 /* my_exit() was called */
1628 while (PL_scopestack_ix > oldscope)
1631 PL_curstash = PL_defstash;
1632 if (PL_unitcheckav) {
1633 call_list(oldscope, PL_unitcheckav);
1636 PL_phase = PERL_PHASE_CHECK;
1637 call_list(oldscope, PL_checkav);
1642 PerlIO_printf(Perl_error_log, "panic: top_env\n");
1650 /* This needs to stay in perl.c, as perl.c is compiled with different flags for
1651 miniperl, and we need to see those flags reflected in the values here. */
1653 /* What this returns is subject to change. Use the public interface in Config.
1656 S_Internals_V(pTHX_ CV *cv)
1659 #ifdef LOCAL_PATCH_COUNT
1660 const int local_patch_count = LOCAL_PATCH_COUNT;
1662 const int local_patch_count = 0;
1664 const int entries = 3 + local_patch_count;
1666 static char non_bincompat_options[] =
1673 # ifdef PERL_DISABLE_PMC
1676 # ifdef PERL_DONT_CREATE_GVSV
1677 " PERL_DONT_CREATE_GVSV"
1679 # ifdef PERL_EXTERNAL_GLOB
1680 " PERL_EXTERNAL_GLOB"
1682 # ifdef PERL_IS_MINIPERL
1685 # ifdef PERL_MALLOC_WRAP
1688 # ifdef PERL_MEM_LOG
1691 # ifdef PERL_MEM_LOG_NOIMPL
1692 " PERL_MEM_LOG_NOIMPL"
1694 # ifdef PERL_PRESERVE_IVUV
1695 " PERL_PRESERVE_IVUV"
1697 # ifdef PERL_USE_DEVEL
1700 # ifdef PERL_USE_SAFE_PUTENV
1701 " PERL_USE_SAFE_PUTENV"
1703 # ifdef USE_ATTRIBUTES_FOR_PERLIO
1704 " USE_ATTRIBUTES_FOR_PERLIO"
1706 # ifdef USE_FAST_STDIO
1712 # ifdef USE_LOCALE_COLLATE
1713 " USE_LOCALE_COLLATE"
1715 # ifdef USE_LOCALE_CTYPE
1718 # ifdef USE_LOCALE_NUMERIC
1719 " USE_LOCALE_NUMERIC"
1721 # ifdef USE_PERL_ATOF
1724 # ifdef USE_SITECUSTOMIZE
1725 " USE_SITECUSTOMIZE"
1728 PERL_UNUSED_ARG(cv);
1729 PERL_UNUSED_ARG(items);
1731 EXTEND(SP, entries);
1733 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1734 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1735 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1739 PUSHs(Perl_newSVpvn_flags(aTHX_
1740 STR_WITH_LEN("Compiled at " __DATE__ " " __TIME__),
1743 PUSHs(Perl_newSVpvn_flags(aTHX_ STR_WITH_LEN("Compiled on " __DATE__),
1747 PUSHs(&PL_sv_undef);
1750 for (i = 1; i <= local_patch_count; i++) {
1751 /* This will be an undef, if PL_localpatches[i] is NULL. */
1752 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1758 #define INCPUSH_UNSHIFT 0x01
1759 #define INCPUSH_ADD_OLD_VERS 0x02
1760 #define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1761 #define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1762 #define INCPUSH_NOT_BASEDIR 0x10
1763 #define INCPUSH_CAN_RELOCATE 0x20
1764 #define INCPUSH_ADD_SUB_DIRS \
1765 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
1768 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
1772 int argc = PL_origargc;
1773 char **argv = PL_origargv;
1774 const char *scriptname = NULL;
1775 VOL bool dosearch = FALSE;
1777 bool doextract = FALSE;
1778 const char *cddir = NULL;
1779 #ifdef USE_SITECUSTOMIZE
1780 bool minus_f = FALSE;
1782 SV *linestr_sv = newSV_type(SVt_PVIV);
1783 bool add_read_e_script = FALSE;
1785 PL_phase = PERL_PHASE_START;
1787 SvGROW(linestr_sv, 80);
1788 sv_setpvs(linestr_sv,"");
1794 for (argc--,argv++; argc > 0; argc--,argv++) {
1795 if (argv[0][0] != '-' || !argv[0][1])
1801 #ifndef PERL_STRICT_CR
1825 if ((s = moreswitches(s)))
1830 CHECK_MALLOC_TOO_LATE_FOR('t');
1831 if( !PL_tainting ) {
1832 PL_taint_warn = TRUE;
1838 CHECK_MALLOC_TOO_LATE_FOR('T');
1840 PL_taint_warn = FALSE;
1848 forbid_setid('e', FALSE);
1850 PL_e_script = newSVpvs("");
1851 add_read_e_script = TRUE;
1854 sv_catpv(PL_e_script, s);
1856 sv_catpv(PL_e_script, argv[1]);
1860 Perl_croak(aTHX_ "No code specified for -%c", c);
1861 sv_catpvs(PL_e_script, "\n");
1865 #ifdef USE_SITECUSTOMIZE
1871 case 'I': /* -I handled both here and in moreswitches() */
1872 forbid_setid('I', FALSE);
1873 if (!*++s && (s=argv[1]) != NULL) {
1877 STRLEN len = strlen(s);
1878 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
1881 Perl_croak(aTHX_ "No directory specified for -I");
1884 forbid_setid('S', FALSE);
1893 opts_prog = newSVpvs("use Config; Config::_V()");
1897 opts_prog = Perl_newSVpvf(aTHX_
1898 "use Config; Config::config_vars(qw%c%s%c)",
1902 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
1903 /* don't look for script or read stdin */
1904 scriptname = BIT_BUCKET;
1916 if (!*++s || isSPACE(*s)) {
1920 /* catch use of gnu style long options */
1921 if (strEQ(s, "version")) {
1925 if (strEQ(s, "help")) {
1932 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1943 #ifndef SECURE_INTERNAL_GETENV
1946 (s = PerlEnv_getenv("PERL5OPT")))
1950 if (*s == '-' && *(s+1) == 'T') {
1951 CHECK_MALLOC_TOO_LATE_FOR('T');
1953 PL_taint_warn = FALSE;
1956 char *popt_copy = NULL;
1969 if (!strchr("CDIMUdmtwW", *s))
1970 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
1974 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
1975 s = popt_copy + (s - d);
1983 if( !PL_tainting ) {
1984 PL_taint_warn = TRUE;
1995 #if defined(USE_SITECUSTOMIZE)
1997 /* The games with local $! are to avoid setting errno if there is no
1998 sitecustomize script. */
1999 # ifdef PERL_IS_MINIPERL
2000 AV *const inc = GvAV(PL_incgv);
2001 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
2004 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2006 "BEGIN { do {local $!; -f '%"SVf"/buildcustomize.pl'} && do '%"SVf"/buildcustomize.pl' }", *inc0, *inc0));
2009 /* SITELIB_EXP is a function call on Win32. */
2010 const char *const sitelib = SITELIB_EXP;
2011 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2013 "BEGIN { do {local $!; -f '%s/sitecustomize.pl'} && do '%s/sitecustomize.pl' }", sitelib, sitelib));
2019 scriptname = argv[0];
2022 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2024 else if (scriptname == NULL) {
2026 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
2032 /* Set $^X early so that it can be used for relocatable paths in @INC */
2033 assert (!PL_tainted);
2035 S_set_caret_X(aTHX);
2040 bool suidscript = FALSE;
2042 open_script(scriptname, dosearch, &suidscript, &rsfp);
2044 validate_suid(validarg, scriptname, fdscript, suidscript,
2048 # if defined(SIGCHLD) || defined(SIGCLD)
2051 # define SIGCHLD SIGCLD
2053 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2054 if (sigstate == (Sighandler_t) SIG_IGN) {
2055 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2056 "Can't ignore signal CHLD, forcing to default");
2057 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2065 /* This will croak if suidscript is true, as -x cannot be used with
2067 forbid_setid('x', suidscript);
2068 /* Hence you can't get here if suidscript is true */
2070 find_beginning(linestr_sv, rsfp);
2071 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2072 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2076 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
2077 CvUNIQUE_on(PL_compcv);
2079 CvPADLIST(PL_compcv) = pad_new(0);
2081 PL_isarev = newHV();
2084 boot_core_UNIVERSAL();
2086 newXS("Internals::V", S_Internals_V, __FILE__);
2089 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
2091 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC) || defined(SYMBIAN)
2097 # ifdef HAS_SOCKS5_INIT
2098 socks5_init(argv[0]);
2104 init_predump_symbols();
2105 /* init_postdump_symbols not currently designed to be called */
2106 /* more than once (ENV isn't cleared first, for example) */
2107 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
2109 init_postdump_symbols(argc,argv,env);
2111 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2112 * or explicitly in some platforms.
2113 * locale.c:Perl_init_i18nl10n() if the environment
2114 * look like the user wants to use UTF-8. */
2115 #if defined(__SYMBIAN32__)
2116 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2118 # ifndef PERL_IS_MINIPERL
2120 /* Requires init_predump_symbols(). */
2121 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
2126 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
2127 * and the default open disciplines. */
2128 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2129 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2131 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2132 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2133 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2135 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2136 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2137 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2139 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2140 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
2141 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2143 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2144 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2147 sv_setpvs(sv, ":utf8\0:utf8");
2149 sv_setpvs(sv, ":utf8\0");
2152 sv_setpvs(sv, "\0:utf8");
2161 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2162 if (strEQ(s, "unsafe"))
2163 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2164 else if (strEQ(s, "safe"))
2165 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2167 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2174 if ((s = PerlEnv_getenv("PERL_XMLDUMP"))) {
2178 PL_xmlfp = PerlIO_stdout();
2180 PL_xmlfp = PerlIO_open(s, "w");
2182 Perl_croak(aTHX_ "Can't open %s", s);
2184 my_setenv("PERL_XMLDUMP", NULL); /* hide from subprocs */
2190 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2191 PL_madskills = atoi(s);
2192 my_setenv("PERL_MADSKILLS", NULL); /* hide from subprocs */
2197 lex_start(linestr_sv, rsfp, 0);
2198 PL_subname = newSVpvs("main");
2200 if (add_read_e_script)
2201 filter_add(read_e_script, NULL);
2203 /* now parse the script */
2205 SETERRNO(0,SS_NORMAL);
2206 if (yyparse(GRAMPROG) || PL_parser->error_count) {
2208 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
2210 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
2214 CopLINE_set(PL_curcop, 0);
2215 PL_curstash = PL_defstash;
2217 SvREFCNT_dec(PL_e_script);
2225 SAVECOPFILE(PL_curcop);
2226 SAVECOPLINE(PL_curcop);
2227 gv_check(PL_defstash);
2236 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2237 dump_mstats("after compilation:");
2242 PL_restartjmpenv = NULL;
2248 =for apidoc perl_run
2250 Tells a Perl interpreter to run. See L<perlembed>.
2263 PERL_ARGS_ASSERT_PERL_RUN;
2264 #ifndef MULTIPLICITY
2265 PERL_UNUSED_ARG(my_perl);
2268 oldscope = PL_scopestack_ix;
2276 cxstack_ix = -1; /* start context stack again */
2278 case 0: /* normal completion */
2282 case 2: /* my_exit() */
2283 while (PL_scopestack_ix > oldscope)
2286 PL_curstash = PL_defstash;
2287 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
2288 PL_endav && !PL_minus_c) {
2289 PL_phase = PERL_PHASE_END;
2290 call_list(oldscope, PL_endav);
2293 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2294 dump_mstats("after execution: ");
2300 POPSTACK_TO(PL_mainstack);
2303 PerlIO_printf(Perl_error_log, "panic: restartop\n");
2314 S_run_body(pTHX_ I32 oldscope)
2317 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
2318 PL_sawampersand ? "Enabling" : "Omitting"));
2320 if (!PL_restartop) {
2324 exit(0); /* less likely to core dump than my_exit(0) */
2328 if (DEBUG_x_TEST || DEBUG_B_TEST)
2329 dump_all_perl(!DEBUG_B_TEST);
2331 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
2335 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
2338 if (PERLDB_SINGLE && PL_DBsingle)
2339 sv_setiv(PL_DBsingle, 1);
2341 PL_phase = PERL_PHASE_INIT;
2342 call_list(oldscope, PL_initav);
2344 #ifdef PERL_DEBUG_READONLY_OPS
2345 Perl_pending_Slabs_to_ro(aTHX);
2351 PL_phase = PERL_PHASE_RUN;
2354 PL_restartjmpenv = NULL;
2355 PL_op = PL_restartop;
2359 else if (PL_main_start) {
2360 CvDEPTH(PL_main_cv) = 1;
2361 PL_op = PL_main_start;
2369 =head1 SV Manipulation Functions
2371 =for apidoc p||get_sv
2373 Returns the SV of the specified Perl scalar. C<flags> are passed to
2374 C<gv_fetchpv>. If C<GV_ADD> is set and the
2375 Perl variable does not exist then it will be created. If C<flags> is zero
2376 and the variable does not exist then NULL is returned.
2382 Perl_get_sv(pTHX_ const char *name, I32 flags)
2386 PERL_ARGS_ASSERT_GET_SV;
2388 gv = gv_fetchpv(name, flags, SVt_PV);
2395 =head1 Array Manipulation Functions
2397 =for apidoc p||get_av
2399 Returns the AV of the specified Perl array. C<flags> are passed to
2400 C<gv_fetchpv>. If C<GV_ADD> is set and the
2401 Perl variable does not exist then it will be created. If C<flags> is zero
2402 and the variable does not exist then NULL is returned.
2408 Perl_get_av(pTHX_ const char *name, I32 flags)
2410 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
2412 PERL_ARGS_ASSERT_GET_AV;
2422 =head1 Hash Manipulation Functions
2424 =for apidoc p||get_hv
2426 Returns the HV of the specified Perl hash. C<flags> are passed to
2427 C<gv_fetchpv>. If C<GV_ADD> is set and the
2428 Perl variable does not exist then it will be created. If C<flags> is zero
2429 and the variable does not exist then NULL is returned.
2435 Perl_get_hv(pTHX_ const char *name, I32 flags)
2437 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
2439 PERL_ARGS_ASSERT_GET_HV;
2449 =head1 CV Manipulation Functions
2451 =for apidoc p||get_cvn_flags
2453 Returns the CV of the specified Perl subroutine. C<flags> are passed to
2454 C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2455 exist then it will be declared (which has the same effect as saying
2456 C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2457 then NULL is returned.
2459 =for apidoc p||get_cv
2461 Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
2467 Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
2469 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
2470 /* XXX this is probably not what they think they're getting.
2471 * It has the same effect as "sub name;", i.e. just a forward
2474 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2476 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
2477 SV *const sv = newSVpvn_flags(name, len, flags & SVf_UTF8);
2478 return newSUB(start_subparse(FALSE, 0),
2479 newSVOP(OP_CONST, 0, sv),
2487 /* Nothing in core calls this now, but we can't replace it with a macro and
2488 move it to mathoms.c as a macro would evaluate name twice. */
2490 Perl_get_cv(pTHX_ const char *name, I32 flags)
2492 PERL_ARGS_ASSERT_GET_CV;
2494 return get_cvn_flags(name, strlen(name), flags);
2497 /* Be sure to refetch the stack pointer after calling these routines. */
2501 =head1 Callback Functions
2503 =for apidoc p||call_argv
2505 Performs a callback to the specified Perl sub. See L<perlcall>.
2511 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
2513 /* See G_* flags in cop.h */
2514 /* null terminated arg list */
2519 PERL_ARGS_ASSERT_CALL_ARGV;
2524 mXPUSHs(newSVpv(*argv,0));
2529 return call_pv(sub_name, flags);
2533 =for apidoc p||call_pv
2535 Performs a callback to the specified Perl sub. See L<perlcall>.
2541 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
2542 /* name of the subroutine */
2543 /* See G_* flags in cop.h */
2545 PERL_ARGS_ASSERT_CALL_PV;
2547 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
2551 =for apidoc p||call_method
2553 Performs a callback to the specified Perl method. The blessed object must
2554 be on the stack. See L<perlcall>.
2560 Perl_call_method(pTHX_ const char *methname, I32 flags)
2561 /* name of the subroutine */
2562 /* See G_* flags in cop.h */
2565 PERL_ARGS_ASSERT_CALL_METHOD;
2567 len = strlen(methname);
2569 /* XXX: sv_2mortal(newSVpvn_share(methname, len)) can be faster */
2570 return call_sv(newSVpvn_flags(methname, len, SVs_TEMP), flags | G_METHOD);
2573 /* May be called with any of a CV, a GV, or an SV containing the name. */
2575 =for apidoc p||call_sv
2577 Performs a callback to the Perl sub whose name is in the SV. See
2584 Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
2585 /* See G_* flags in cop.h */
2588 LOGOP myop; /* fake syntax tree node */
2593 bool oldcatch = CATCH_GET;
2595 OP* const oldop = PL_op;
2598 PERL_ARGS_ASSERT_CALL_SV;
2600 if (flags & G_DISCARD) {
2604 if (!(flags & G_WANT)) {
2605 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2610 Zero(&myop, 1, LOGOP);
2611 myop.op_next = NULL;
2612 if (!(flags & G_NOARGS))
2613 myop.op_flags |= OPf_STACKED;
2614 myop.op_flags |= OP_GIMME_REVERSE(flags);
2618 EXTEND(PL_stack_sp, 1);
2619 *++PL_stack_sp = sv;
2621 oldscope = PL_scopestack_ix;
2623 if (PERLDB_SUB && PL_curstash != PL_debstash
2624 /* Handle first BEGIN of -d. */
2625 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
2626 /* Try harder, since this may have been a sighandler, thus
2627 * curstash may be meaningless. */
2628 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
2629 && !(flags & G_NODEBUG))
2630 PL_op->op_private |= OPpENTERSUB_DB;
2632 if (flags & G_METHOD) {
2633 Zero(&method_op, 1, UNOP);
2634 method_op.op_next = PL_op;
2635 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2636 method_op.op_type = OP_METHOD;
2637 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
2638 myop.op_type = OP_ENTERSUB;
2639 PL_op = (OP*)&method_op;
2642 if (!(flags & G_EVAL)) {
2644 CALL_BODY_SUB((OP*)&myop);
2645 retval = PL_stack_sp - (PL_stack_base + oldmark);
2646 CATCH_SET(oldcatch);
2649 myop.op_other = (OP*)&myop;
2651 create_eval_scope(flags|G_FAKINGEVAL);
2659 CALL_BODY_SUB((OP*)&myop);
2660 retval = PL_stack_sp - (PL_stack_base + oldmark);
2661 if (!(flags & G_KEEPERR)) {
2669 /* my_exit() was called */
2670 PL_curstash = PL_defstash;
2677 PL_restartjmpenv = NULL;
2678 PL_op = PL_restartop;
2682 PL_stack_sp = PL_stack_base + oldmark;
2683 if ((flags & G_WANT) == G_ARRAY)
2687 *++PL_stack_sp = &PL_sv_undef;
2692 if (PL_scopestack_ix > oldscope)
2693 delete_eval_scope();
2697 if (flags & G_DISCARD) {
2698 PL_stack_sp = PL_stack_base + oldmark;
2707 /* Eval a string. The G_EVAL flag is always assumed. */
2710 =for apidoc p||eval_sv
2712 Tells Perl to C<eval> the string in the SV. It supports the same flags
2713 as C<call_sv>, with the obvious exception of G_EVAL. See L<perlcall>.
2719 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
2721 /* See G_* flags in cop.h */
2725 UNOP myop; /* fake syntax tree node */
2726 VOL I32 oldmark = SP - PL_stack_base;
2729 OP* const oldop = PL_op;
2732 PERL_ARGS_ASSERT_EVAL_SV;
2734 if (flags & G_DISCARD) {
2741 Zero(PL_op, 1, UNOP);
2742 EXTEND(PL_stack_sp, 1);
2743 *++PL_stack_sp = sv;
2745 if (!(flags & G_NOARGS))
2746 myop.op_flags = OPf_STACKED;
2747 myop.op_next = NULL;
2748 myop.op_type = OP_ENTEREVAL;
2749 myop.op_flags |= OP_GIMME_REVERSE(flags);
2750 if (flags & G_KEEPERR)
2751 myop.op_flags |= OPf_SPECIAL;
2753 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2754 * before a PUSHEVAL, which corrupts the stack after a croak */
2755 TAINT_PROPER("eval_sv()");
2761 if (PL_op == (OP*)(&myop)) {
2762 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2764 goto fail; /* failed in compilation */
2767 retval = PL_stack_sp - (PL_stack_base + oldmark);
2768 if (!(flags & G_KEEPERR)) {
2776 /* my_exit() was called */
2777 PL_curstash = PL_defstash;
2784 PL_restartjmpenv = NULL;
2785 PL_op = PL_restartop;
2790 PL_stack_sp = PL_stack_base + oldmark;
2791 if ((flags & G_WANT) == G_ARRAY)
2795 *++PL_stack_sp = &PL_sv_undef;
2801 if (flags & G_DISCARD) {
2802 PL_stack_sp = PL_stack_base + oldmark;
2812 =for apidoc p||eval_pv
2814 Tells Perl to C<eval> the given string and return an SV* result.
2820 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
2824 SV* sv = newSVpv(p, 0);
2826 PERL_ARGS_ASSERT_EVAL_PV;
2828 eval_sv(sv, G_SCALAR);
2835 if (croak_on_error && SvTRUE(ERRSV)) {
2836 Perl_croak(aTHX_ "%s", SvPVx_nolen_const(ERRSV));
2842 /* Require a module. */
2845 =head1 Embedding Functions
2847 =for apidoc p||require_pv
2849 Tells Perl to C<require> the file named by the string argument. It is
2850 analogous to the Perl code C<eval "require '$file'">. It's even
2851 implemented that way; consider using load_module instead.
2856 Perl_require_pv(pTHX_ const char *pv)
2862 PERL_ARGS_ASSERT_REQUIRE_PV;
2864 PUSHSTACKi(PERLSI_REQUIRE);
2866 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2867 eval_sv(sv_2mortal(sv), G_DISCARD);
2873 S_usage(pTHX_ const char *name) /* XXX move this out into a module ? */
2875 /* This message really ought to be max 23 lines.
2876 * Removed -h because the user already knows that option. Others? */
2878 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
2879 minimum of 509 character string literals. */
2880 static const char * const usage_msg[] = {
2881 " -0[octal] specify record separator (\\0, if no argument)\n"
2882 " -a autosplit mode with -n or -p (splits $_ into @F)\n"
2883 " -C[number/list] enables the listed Unicode features\n"
2884 " -c check syntax only (runs BEGIN and CHECK blocks)\n"
2885 " -d[:debugger] run program under debugger\n"
2886 " -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
2887 " -e program one line of program (several -e's allowed, omit programfile)\n"
2888 " -E program like -e, but enables all optional features\n"
2889 " -f don't do $sitelib/sitecustomize.pl at startup\n"
2890 " -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
2891 " -i[extension] edit <> files in place (makes backup if extension supplied)\n"
2892 " -Idirectory specify @INC/#include directory (several -I's allowed)\n",
2893 " -l[octal] enable line ending processing, specifies line terminator\n"
2894 " -[mM][-]module execute \"use/no module...\" before executing program\n"
2895 " -n assume \"while (<>) { ... }\" loop around program\n"
2896 " -p assume loop like -n but print line also, like sed\n"
2897 " -s enable rudimentary parsing for switches after programfile\n"
2898 " -S look for programfile using PATH environment variable\n",
2899 " -t enable tainting warnings\n"
2900 " -T enable tainting checks\n"
2901 " -u dump core after parsing program\n"
2902 " -U allow unsafe operations\n"
2903 " -v print version, patchlevel and license\n"
2904 " -V[:variable] print configuration summary (or a single Config.pm variable)\n",
2905 " -w enable many useful warnings\n"
2906 " -W enable all warnings\n"
2907 " -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
2908 " -X disable all warnings\n"
2910 "Run 'perldoc perl' for more help with Perl.\n\n",
2913 const char * const *p = usage_msg;
2914 PerlIO *out = PerlIO_stdout();
2916 PERL_ARGS_ASSERT_USAGE;
2919 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
2922 PerlIO_puts(out, *p++);
2925 /* convert a string of -D options (or digits) into an int.
2926 * sets *s to point to the char after the options */
2930 Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
2932 static const char * const usage_msgd[] = {
2933 " Debugging flag values: (see also -d)\n"
2934 " p Tokenizing and parsing (with v, displays parse stack)\n"
2935 " s Stack snapshots (with v, displays all stacks)\n"
2936 " l Context (loop) stack processing\n"
2937 " t Trace execution\n"
2938 " o Method and overloading resolution\n",
2939 " c String/numeric conversions\n"
2940 " P Print profiling info, source file input state\n"
2941 " m Memory and SV allocation\n"
2942 " f Format processing\n"
2943 " r Regular expression parsing and execution\n"
2944 " x Syntax tree dump\n",
2945 " u Tainting checks\n"
2946 " H Hash dump -- usurps values()\n"
2947 " X Scratchpad allocation\n"
2950 " R Include reference counts of dumped variables (eg when using -Ds)\n",
2951 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
2952 " v Verbose: use in conjunction with other flags\n"
2953 " C Copy On Write\n"
2954 " A Consistency checks on internal structures\n"
2955 " q quiet - currently only suppresses the 'EXECUTING' message\n"
2956 " M trace smart match resolution\n"
2957 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
2962 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
2965 /* if adding extra options, remember to update DEBUG_MASK */
2966 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMB";
2968 for (; isALNUM(**s); (*s)++) {
2969 const char * const d = strchr(debopts,**s);
2971 i |= 1 << (d - debopts);
2972 else if (ckWARN_d(WARN_DEBUGGING))
2973 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2974 "invalid option -D%c, use -D'' to see choices\n", **s);
2977 else if (isDIGIT(**s)) {
2979 for (; isALNUM(**s); (*s)++) ;
2981 else if (givehelp) {
2982 const char *const *p = usage_msgd;
2983 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
2986 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
2987 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2988 "-Dp not implemented on this platform\n");
2994 /* This routine handles any switches that can be given during run */
2997 Perl_moreswitches(pTHX_ const char *s)
3001 const char option = *s; /* used to remember option in -m/-M code */
3003 PERL_ARGS_ASSERT_MORESWITCHES;
3011 SvREFCNT_dec(PL_rs);
3012 if (s[1] == 'x' && s[2]) {
3013 const char *e = s+=2;
3019 flags = PERL_SCAN_SILENT_ILLDIGIT;
3020 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3021 if (s + numlen < e) {
3022 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3026 PL_rs = newSVpvs("");
3027 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
3028 tmps = (U8*)SvPVX(PL_rs);
3029 uvchr_to_utf8(tmps, rschar);
3030 SvCUR_set(PL_rs, UNISKIP(rschar));
3035 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3036 if (rschar & ~((U8)~0))
3037 PL_rs = &PL_sv_undef;
3038 else if (!rschar && numlen >= 2)
3039 PL_rs = newSVpvs("");
3041 char ch = (char)rschar;
3042 PL_rs = newSVpvn(&ch, 1);
3045 sv_setsv(get_sv("/", GV_ADD), PL_rs);
3050 PL_unicode = parse_unicode_opts( (const char **)&s );
3051 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3057 while (*s && !isSPACE(*s)) ++s;
3058 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
3069 forbid_setid('d', FALSE);
3072 /* -dt indicates to the debugger that threads will be used */
3073 if (*s == 't' && !isALNUM(s[1])) {
3075 my_setenv("PERL5DB_THREADED", "1");
3078 /* The following permits -d:Mod to accepts arguments following an =
3079 in the fashion that -MSome::Mod does. */
3080 if (*s == ':' || *s == '=') {
3087 sv = newSVpvs("no Devel::");
3089 sv = newSVpvs("use Devel::");
3093 end = s + strlen(s);
3095 /* We now allow -d:Module=Foo,Bar and -d:-Module */
3096 while(isALNUM(*s) || *s==':') ++s;
3098 sv_catpvn(sv, start, end - start);
3100 sv_catpvn(sv, start, s-start);
3101 /* Don't use NUL as q// delimiter here, this string goes in the
3103 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
3106 my_setenv("PERL5DB", SvPV_nolen_const(sv));
3110 PL_perldb = PERLDB_ALL;
3117 forbid_setid('D', FALSE);
3119 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
3120 #else /* !DEBUGGING */
3121 if (ckWARN_d(WARN_DEBUGGING))
3122 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3123 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
3124 for (s++; isALNUM(*s); s++) ;
3129 usage(PL_origargv[0]);
3132 Safefree(PL_inplace);
3133 #if defined(__CYGWIN__) /* do backup extension automagically */
3134 if (*(s+1) == '\0') {
3135 PL_inplace = savepvs(".bak");
3138 #endif /* __CYGWIN__ */
3140 const char * const start = ++s;
3141 while (*s && !isSPACE(*s))
3144 PL_inplace = savepvn(start, s - start);
3148 if (*s == '-') /* Additional switches on #! line. */
3152 case 'I': /* -I handled both here and in parse_body() */
3153 forbid_setid('I', FALSE);
3155 while (*s && isSPACE(*s))
3160 /* ignore trailing spaces (possibly followed by other switches) */
3162 for (e = p; *e && !isSPACE(*e); e++) ;
3166 } while (*p && *p != '-');
3168 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
3174 Perl_croak(aTHX_ "No directory specified for -I");
3180 SvREFCNT_dec(PL_ors_sv);
3186 PL_ors_sv = newSVpvs("\n");
3187 numlen = 3 + (*s == '0');
3188 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
3192 if (RsPARA(PL_rs)) {
3193 PL_ors_sv = newSVpvs("\n\n");
3196 PL_ors_sv = newSVsv(PL_rs);
3201 forbid_setid('M', FALSE); /* XXX ? */
3204 forbid_setid('m', FALSE); /* XXX ? */
3209 const char *use = "use ";
3211 /* -M-foo == 'no foo' */
3212 /* Leading space on " no " is deliberate, to make both
3213 possibilities the same length. */
3214 if (*s == '-') { use = " no "; ++s; }
3215 sv = newSVpvn(use,4);
3217 /* We allow -M'Module qw(Foo Bar)' */
3218 while(isALNUM(*s) || *s==':') {
3227 Perl_croak(aTHX_ "Module name required with -%c option",
3230 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3231 "contains single ':'",
3232 (int)(s - start), start, option);
3233 end = s + strlen(s);
3235 sv_catpvn(sv, start, end - start);
3236 if (option == 'm') {
3238 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
3239 sv_catpvs( sv, " ()");
3242 sv_catpvn(sv, start, s-start);
3243 /* Use NUL as q''-delimiter. */
3244 sv_catpvs(sv, " split(/,/,q\0");
3246 sv_catpvn(sv, s, end - s);
3247 sv_catpvs(sv, "\0)");
3250 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
3253 Perl_croak(aTHX_ "Missing argument to -%c", option);
3264 forbid_setid('s', FALSE);
3265 PL_doswitches = TRUE;
3279 PL_do_undump = TRUE;
3287 if (!sv_derived_from(PL_patchlevel, "version"))
3288 upg_version(PL_patchlevel, TRUE);
3291 SV* level= vstringify(PL_patchlevel);
3292 #ifdef PERL_PATCHNUM
3293 # ifdef PERL_GIT_UNCOMMITTED_CHANGES
3294 SV *num = newSVpvs(PERL_PATCHNUM "*");
3296 SV *num = newSVpvs(PERL_PATCHNUM);
3299 if (sv_len(num)>=sv_len(level) && strnEQ(SvPV_nolen(num),SvPV_nolen(level),sv_len(level))) {
3300 SvREFCNT_dec(level);
3303 Perl_sv_catpvf(aTHX_ level, " (%"SVf")", num);
3307 PerlIO_printf(PerlIO_stdout(),
3308 "\nThis is perl " STRINGIFY(PERL_REVISION)
3309 ", version " STRINGIFY(PERL_VERSION)
3310 ", subversion " STRINGIFY(PERL_SUBVERSION)
3311 " (%"SVf") built for " ARCHNAME, level
3313 SvREFCNT_dec(level);
3316 /* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3317 PerlIO_printf(PerlIO_stdout(),
3318 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
3319 SVfARG(vstringify(PL_patchlevel))));
3320 PerlIO_printf(PerlIO_stdout(),
3321 Perl_form(aTHX_ " built under %s at %s %s\n",
3322 OSNAME, __DATE__, __TIME__));
3323 PerlIO_printf(PerlIO_stdout(),
3324 Perl_form(aTHX_ " OS Specific Release: %s\n",
3327 #if defined(LOCAL_PATCH_COUNT)
3328 if (LOCAL_PATCH_COUNT > 0)
3329 PerlIO_printf(PerlIO_stdout(),
3330 "\n(with %d registered patch%s, "
3331 "see perl -V for more detail)",
3333 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
3336 PerlIO_printf(PerlIO_stdout(),
3337 "\n\nCopyright 1987-2011, Larry Wall\n");
3339 PerlIO_printf(PerlIO_stdout(),
3340 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
3343 PerlIO_printf(PerlIO_stdout(),
3344 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3345 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
3348 PerlIO_printf(PerlIO_stdout(),
3349 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
3350 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
3353 PerlIO_printf(PerlIO_stdout(),
3354 "atariST series port, ++jrb bammi@cadence.com\n");
3357 PerlIO_printf(PerlIO_stdout(),
3358 "BeOS port Copyright Tom Spindler, 1997-1999\n");
3361 PerlIO_printf(PerlIO_stdout(),
3362 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n");
3365 PerlIO_printf(PerlIO_stdout(),
3366 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
3369 PerlIO_printf(PerlIO_stdout(),
3370 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
3373 PerlIO_printf(PerlIO_stdout(),
3374 "VM/ESA port by Neale Ferguson, 1998-1999\n");
3377 PerlIO_printf(PerlIO_stdout(),
3378 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
3381 PerlIO_printf(PerlIO_stdout(),
3382 "EPOC port by Olaf Flebbe, 1999-2002\n");
3385 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
3386 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
3389 #ifdef __SYMBIAN32__
3390 PerlIO_printf(PerlIO_stdout(),
3391 "Symbian port by Nokia, 2004-2005\n");
3393 #ifdef BINARY_BUILD_NOTICE
3394 BINARY_BUILD_NOTICE;
3396 PerlIO_printf(PerlIO_stdout(),
3398 Perl may be copied only under the terms of either the Artistic License or the\n\
3399 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
3400 Complete documentation for Perl, including FAQ lists, should be found on\n\
3401 this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
3402 Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
3405 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
3406 PL_dowarn |= G_WARN_ON;
3411 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
3412 if (!specialWARN(PL_compiling.cop_warnings))
3413 PerlMemShared_free(PL_compiling.cop_warnings);
3414 PL_compiling.cop_warnings = pWARN_ALL ;
3418 PL_dowarn = G_WARN_ALL_OFF;
3419 if (!specialWARN(PL_compiling.cop_warnings))
3420 PerlMemShared_free(PL_compiling.cop_warnings);
3421 PL_compiling.cop_warnings = pWARN_NONE ;
3428 if (s[0] == '-') /* Additional switches on #! line. */
3433 #if defined(WIN32) || !defined(PERL_STRICT_CR)
3439 #ifdef ALTERNATE_SHEBANG
3440 case 'S': /* OS/2 needs -S on "extproc" line. */
3444 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
3449 /* compliments of Tom Christiansen */
3451 /* unexec() can be found in the Gnu emacs distribution */
3452 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
3455 Perl_my_unexec(pTHX)
3457 PERL_UNUSED_CONTEXT;
3459 SV * prog = newSVpv(BIN_EXP, 0);
3460 SV * file = newSVpv(PL_origfilename, 0);
3464 sv_catpvs(prog, "/perl");
3465 sv_catpvs(file, ".perldump");
3467 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3468 /* unexec prints msg to stderr in case of failure */
3469 PerlProc_exit(status);
3472 # include <lib$routines.h>
3473 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
3474 # elif defined(WIN32) || defined(__CYGWIN__)
3475 Perl_croak(aTHX_ "dump is not supported");
3477 ABORT(); /* for use with undump */
3482 /* initialize curinterp */
3488 # define PERLVAR(var,type)
3489 # define PERLVARA(var,n,type)
3490 # if defined(PERL_IMPLICIT_CONTEXT)
3491 # define PERLVARI(var,type,init) aTHX->var = init;
3492 # define PERLVARIC(var,type,init) aTHX->var = init;
3494 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
3495 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
3497 # include "intrpvar.h"
3503 # define PERLVAR(var,type)
3504 # define PERLVARA(var,n,type)
3505 # define PERLVARI(var,type,init) PL_##var = init;
3506 # define PERLVARIC(var,type,init) PL_##var = init;
3507 # include "intrpvar.h"
3514 /* As these are inside a structure, PERLVARI isn't capable of initialising
3516 PL_reg_oldcurpm = PL_reg_curpm = NULL;
3517 PL_reg_poscache = PL_reg_starttry = NULL;
3521 S_init_main_stash(pTHX)
3526 PL_curstash = PL_defstash = newHV();
3527 /* We know that the string "main" will be in the global shared string
3528 table, so it's a small saving to use it rather than allocate another
3530 PL_curstname = newSVpvs_share("main");
3531 gv = gv_fetchpvs("main::", GV_ADD|GV_NOTQUAL, SVt_PVHV);
3532 /* If we hadn't caused another reference to "main" to be in the shared
3533 string table above, then it would be worth reordering these two,
3534 because otherwise all we do is delete "main" from it as a consequence
3535 of the SvREFCNT_dec, only to add it again with hv_name_set */
3536 SvREFCNT_dec(GvHV(gv));
3537 hv_name_set(PL_defstash, "main", 4, 0);
3538 GvHV(gv) = MUTABLE_HV(SvREFCNT_inc_simple(PL_defstash));
3540 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpvs("INC", GV_ADD|GV_NOTQUAL,
3542 SvREFCNT_inc_simple_void(PL_incgv); /* Don't allow it to be freed */
3543 GvMULTI_on(PL_incgv);
3544 PL_hintgv = gv_fetchpvs("\010", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^H */
3545 GvMULTI_on(PL_hintgv);
3546 PL_defgv = gv_fetchpvs("_", GV_ADD|GV_NOTQUAL, SVt_PVAV);
3547 SvREFCNT_inc_simple_void(PL_defgv);
3548 PL_errgv = gv_HVadd(gv_fetchpvs("@", GV_ADD|GV_NOTQUAL, SVt_PV));
3549 SvREFCNT_inc_simple_void(PL_errgv);
3550 GvMULTI_on(PL_errgv);
3551 PL_replgv = gv_fetchpvs("\022", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^R */
3552 GvMULTI_on(PL_replgv);
3553 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
3554 #ifdef PERL_DONT_CREATE_GVSV
3557 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
3559 PL_curstash = PL_defstash;
3560 CopSTASH_set(&PL_compiling, PL_defstash);
3561 PL_debstash = GvHV(gv_fetchpvs("DB::", GV_ADDMULTI, SVt_PVHV));
3562 PL_globalstash = GvHV(gv_fetchpvs("CORE::GLOBAL::", GV_ADDMULTI,
3564 /* We must init $/ before switches are processed. */
3565 sv_setpvs(get_sv("/", GV_ADD), "\n");
3569 S_open_script(pTHX_ const char *scriptname, bool dosearch,
3570 bool *suidscript, PerlIO **rsfpp)
3575 PERL_ARGS_ASSERT_OPEN_SCRIPT;
3578 PL_origfilename = savepvs("-e");
3581 /* if find_script() returns, it returns a malloc()-ed value */
3582 scriptname = PL_origfilename = find_script(scriptname, dosearch, NULL, 1);
3584 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
3585 const char *s = scriptname + 8;
3591 * Tell apart "normal" usage of fdscript, e.g.
3592 * with bash on FreeBSD:
3593 * perl <( echo '#!perl -DA'; echo 'print "$0\n"')
3594 * from usage in suidperl.
3595 * Does any "normal" usage leave garbage after the number???
3596 * Is it a mistake to use a similar /dev/fd/ construct for
3601 * Be supersafe and do some sanity-checks.
3602 * Still, can we be sure we got the right thing?
3605 Perl_croak(aTHX_ "Wrong syntax (suid) fd script name \"%s\"\n", s);
3608 Perl_croak(aTHX_ "Missing (suid) fd script name\n");
3610 scriptname = savepv(s + 1);
3611 Safefree(PL_origfilename);
3612 PL_origfilename = (char *)scriptname;
3617 CopFILE_free(PL_curcop);
3618 CopFILE_set(PL_curcop, PL_origfilename);
3619 if (*PL_origfilename == '-' && PL_origfilename[1] == '\0')
3620 scriptname = (char *)"";
3621 if (fdscript >= 0) {
3622 *rsfpp = PerlIO_fdopen(fdscript,PERL_SCRIPT_MODE);
3623 # if defined(HAS_FCNTL) && defined(F_SETFD)
3625 /* ensure close-on-exec */
3626 fcntl(PerlIO_fileno(*rsfpp),F_SETFD,1);
3629 else if (!*scriptname) {
3630 forbid_setid(0, *suidscript);
3631 *rsfpp = PerlIO_stdin();
3634 #ifdef FAKE_BIT_BUCKET
3635 /* This hack allows one not to have /dev/null (or BIT_BUCKET as it
3636 * is called) and still have the "-e" work. (Believe it or not,
3637 * a /dev/null is required for the "-e" to work because source
3638 * filter magic is used to implement it. ) This is *not* a general
3639 * replacement for a /dev/null. What we do here is create a temp
3640 * file (an empty file), open up that as the script, and then
3641 * immediately close and unlink it. Close enough for jazz. */
3642 #define FAKE_BIT_BUCKET_PREFIX "/tmp/perlnull-"
3643 #define FAKE_BIT_BUCKET_SUFFIX "XXXXXXXX"
3644 #define FAKE_BIT_BUCKET_TEMPLATE FAKE_BIT_BUCKET_PREFIX FAKE_BIT_BUCKET_SUFFIX
3645 char tmpname[sizeof(FAKE_BIT_BUCKET_TEMPLATE)] = {
3646 FAKE_BIT_BUCKET_TEMPLATE
3648 const char * const err = "Failed to create a fake bit bucket";
3649 if (strEQ(scriptname, BIT_BUCKET)) {
3650 #ifdef HAS_MKSTEMP /* Hopefully mkstemp() is safe here. */
3651 int tmpfd = mkstemp(tmpname);
3653 scriptname = tmpname;
3656 Perl_croak(aTHX_ err);
3659 scriptname = mktemp(tmpname);
3661 Perl_croak(aTHX_ err);
3666 *rsfpp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
3667 #ifdef FAKE_BIT_BUCKET
3668 if (memEQ(scriptname, FAKE_BIT_BUCKET_PREFIX,
3669 sizeof(FAKE_BIT_BUCKET_PREFIX) - 1)
3670 && strlen(scriptname) == sizeof(tmpname) - 1) {
3673 scriptname = BIT_BUCKET;
3675 # if defined(HAS_FCNTL) && defined(F_SETFD)
3677 /* ensure close-on-exec */
3678 fcntl(PerlIO_fileno(*rsfpp),F_SETFD,1);
3682 /* PSz 16 Sep 03 Keep neat error message */
3684 Perl_croak(aTHX_ "Can't open "BIT_BUCKET": %s\n", Strerror(errno));
3686 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3687 CopFILE(PL_curcop), Strerror(errno));
3693 * I_SYSSTATVFS HAS_FSTATVFS
3695 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
3696 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
3697 * here so that metaconfig picks them up. */
3700 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
3701 /* Don't even need this function. */
3704 S_validate_suid(pTHX_ PerlIO *rsfp)
3706 PERL_ARGS_ASSERT_VALIDATE_SUID;
3708 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
3711 PerlLIO_fstat(PerlIO_fileno(rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3712 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3714 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3717 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3718 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3719 /* not set-id, must be wrapped */
3722 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3725 S_find_beginning(pTHX_ SV* linestr_sv, PerlIO *rsfp)
3729 register const char *s2;
3731 PERL_ARGS_ASSERT_FIND_BEGINNING;
3733 /* skip forward in input to the real script? */
3736 if ((s = sv_gets(linestr_sv, rsfp, 0)) == NULL)
3737 Perl_croak(aTHX_ "No Perl script found in input\n");
3739 } while (!(*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))));
3740 PerlIO_ungetc(rsfp, '\n'); /* to keep line count right */
3741 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3743 while (*s == ' ' || *s == '\t') s++;
3745 while (isDIGIT(s2[-1]) || s2[-1] == '-' || s2[-1] == '.'
3746 || s2[-1] == '_') s2--;
3747 if (strnEQ(s2-4,"perl",4))
3748 while ((s = moreswitches(s)))
3758 PL_uid = PerlProc_getuid();
3759 PL_euid = PerlProc_geteuid();
3760 PL_gid = PerlProc_getgid();
3761 PL_egid = PerlProc_getegid();
3763 PL_uid |= PL_gid << 16;
3764 PL_euid |= PL_egid << 16;
3766 /* Should not happen: */
3767 CHECK_MALLOC_TAINT(PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3768 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3771 * Should go by suidscript, not uid!=euid: why disallow
3772 * system("ls") in scripts run from setuid things?
3773 * Or, is this run before we check arguments and set suidscript?
3774 * What about SETUID_SCRIPTS_ARE_SECURE_NOW: could we use fdscript then?
3775 * (We never have suidscript, can we be sure to have fdscript?)
3776 * Or must then go by UID checks? See comments in forbid_setid also.
3780 /* This is used very early in the lifetime of the program,
3781 * before even the options are parsed, so PL_tainting has
3782 * not been initialized properly. */
3784 Perl_doing_taint(int argc, char *argv[], char *envp[])
3786 #ifndef PERL_IMPLICIT_SYS
3787 /* If we have PERL_IMPLICIT_SYS we can't call getuid() et alia
3788 * before we have an interpreter-- and the whole point of this
3789 * function is to be called at such an early stage. If you are on
3790 * a system with PERL_IMPLICIT_SYS but you do have a concept of
3791 * "tainted because running with altered effective ids', you'll
3792 * have to add your own checks somewhere in here. The two most
3793 * known samples of 'implicitness' are Win32 and NetWare, neither
3794 * of which has much of concept of 'uids'. */
3795 int uid = PerlProc_getuid();
3796 int euid = PerlProc_geteuid();
3797 int gid = PerlProc_getgid();
3798 int egid = PerlProc_getegid();
3805 if (uid && (euid != uid || egid != gid))
3807 #endif /* !PERL_IMPLICIT_SYS */
3808 /* This is a really primitive check; environment gets ignored only
3809 * if -T are the first chars together; otherwise one gets
3810 * "Too late" message. */
3811 if ( argc > 1 && argv[1][0] == '-'
3812 && (argv[1][1] == 't' || argv[1][1] == 'T') )
3817 /* Passing the flag as a single char rather than a string is a slight space
3818 optimisation. The only message that isn't /^-.$/ is
3819 "program input from stdin", which is substituted in place of '\0', which
3820 could never be a command line flag. */
3822 S_forbid_setid(pTHX_ const char flag, const bool suidscript) /* g */
3825 char string[3] = "-x";
3826 const char *message = "program input from stdin";
3833 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
3834 if (PL_euid != PL_uid)
3835 Perl_croak(aTHX_ "No %s allowed while running setuid", message);
3836 if (PL_egid != PL_gid)
3837 Perl_croak(aTHX_ "No %s allowed while running setgid", message);
3838 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3840 Perl_croak(aTHX_ "No %s allowed with (suid) fdscript", message);
3844 Perl_init_dbargs(pTHX)
3846 AV *const args = PL_dbargs = GvAV(gv_AVadd((gv_fetchpvs("DB::args",
3851 /* Someone has already created it.
3852 It might have entries, and if we just turn off AvREAL(), they will
3853 "leak" until global destruction. */
3856 AvREAL_off(PL_dbargs); /* XXX should be REIFY (see av.h) */
3860 Perl_init_debugger(pTHX)
3863 HV * const ostash = PL_curstash;
3865 PL_curstash = PL_debstash;
3867 Perl_init_dbargs(aTHX);
3868 PL_DBgv = gv_fetchpvs("DB::DB", GV_ADDMULTI, SVt_PVGV);
3869 PL_DBline = gv_fetchpvs("DB::dbline", GV_ADDMULTI, SVt_PVAV);
3870 PL_DBsub = gv_HVadd(gv_fetchpvs("DB::sub", GV_ADDMULTI, SVt_PVHV));
3871 PL_DBsingle = GvSV((gv_fetchpvs("DB::single", GV_ADDMULTI, SVt_PV)));
3872 if (!SvIOK(PL_DBsingle))
3873 sv_setiv(PL_DBsingle, 0);
3874 PL_DBtrace = GvSV((gv_fetchpvs("DB::trace", GV_ADDMULTI, SVt_PV)));
3875 if (!SvIOK(PL_DBtrace))
3876 sv_setiv(PL_DBtrace, 0);
3877 PL_DBsignal = GvSV((gv_fetchpvs("DB::signal", GV_ADDMULTI, SVt_PV)));
3878 if (!SvIOK(PL_DBsignal))
3879 sv_setiv(PL_DBsignal, 0);
3880 PL_curstash = ostash;
3883 #ifndef STRESS_REALLOC
3884 #define REASONABLE(size) (size)
3886 #define REASONABLE(size) (1) /* unreasonable */
3890 Perl_init_stacks(pTHX)
3893 /* start with 128-item stack and 8K cxstack */
3894 PL_curstackinfo = new_stackinfo(REASONABLE(128),
3895 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3896 PL_curstackinfo->si_type = PERLSI_MAIN;
3897 PL_curstack = PL_curstackinfo->si_stack;
3898 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
3900 PL_stack_base = AvARRAY(PL_curstack);
3901 PL_stack_sp = PL_stack_base;
3902 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
3904 Newx(PL_tmps_stack,REASONABLE(128),SV*);
3907 PL_tmps_max = REASONABLE(128);
3909 Newx(PL_markstack,REASONABLE(32),I32);
3910 PL_markstack_ptr = PL_markstack;
3911 PL_markstack_max = PL_markstack + REASONABLE(32);
3915 Newx(PL_scopestack,REASONABLE(32),I32);
3917 Newx(PL_scopestack_name,REASONABLE(32),const char*);
3919 PL_scopestack_ix = 0;
3920 PL_scopestack_max = REASONABLE(32);
3922 Newx(PL_savestack,REASONABLE(128),ANY);
3923 PL_savestack_ix = 0;
3924 PL_savestack_max = REASONABLE(128);
3933 while (PL_curstackinfo->si_next)
3934 PL_curstackinfo = PL_curstackinfo->si_next;
3935 while (PL_curstackinfo) {
3936 PERL_SI *p = PL_curstackinfo->si_prev;
3937 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3938 Safefree(PL_curstackinfo->si_cxstack);
3939 Safefree(PL_curstackinfo);
3940 PL_curstackinfo = p;
3942 Safefree(PL_tmps_stack);
3943 Safefree(PL_markstack);
3944 Safefree(PL_scopestack);
3946 Safefree(PL_scopestack_name);
3948 Safefree(PL_savestack);
3952 Perl_populate_isa(pTHX_ const char *name, STRLEN len, ...)
3954 GV *const gv = gv_fetchpvn(name, len, GV_ADD | GV_ADDMULTI, SVt_PVAV);
3955 AV *const isa = GvAVn(gv);
3958 PERL_ARGS_ASSERT_POPULATE_ISA;
3960 if(AvFILLp(isa) != -1)
3963 /* NOTE: No support for tied ISA */
3965 va_start(args, len);
3967 const char *const parent = va_arg(args, const char*);
3972 parent_len = va_arg(args, size_t);
3974 /* Arguments are supplied with a trailing :: */
3975 assert(parent_len > 2);
3976 assert(parent[parent_len - 1] == ':');
3977 assert(parent[parent_len - 2] == ':');
3978 av_push(isa, newSVpvn(parent, parent_len - 2));
3979 (void) gv_fetchpvn(parent, parent_len, GV_ADD, SVt_PVGV);
3986 S_init_predump_symbols(pTHX)
3992 sv_setpvs(get_sv("\"", GV_ADD), " ");
3993 PL_ofsgv = (GV*)SvREFCNT_inc(gv_fetchpvs(",", GV_ADD|GV_NOTQUAL, SVt_PV));
3996 /* Historically, PVIOs were blessed into IO::Handle, unless
3997 FileHandle was loaded, in which case they were blessed into
3998 that. Action at a distance.
3999 However, if we simply bless into IO::Handle, we break code
4000 that assumes that PVIOs will have (among others) a seek
4001 method. IO::File inherits from IO::Handle and IO::Seekable,
4002 and provides the needed methods. But if we simply bless into
4003 it, then we break code that assumed that by loading
4004 IO::Handle, *it* would work.
4005 So a compromise is to set up the correct @IO::File::ISA,
4006 so that code that does C<use IO::Handle>; will still work.
4009 Perl_populate_isa(aTHX_ STR_WITH_LEN("IO::File::ISA"),
4010 STR_WITH_LEN("IO::Handle::"),
4011 STR_WITH_LEN("IO::Seekable::"),
4012 STR_WITH_LEN("Exporter::"),
4015 PL_stdingv = gv_fetchpvs("STDIN", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4016 GvMULTI_on(PL_stdingv);
4017 io = GvIOp(PL_stdingv);
4018 IoTYPE(io) = IoTYPE_RDONLY;
4019 IoIFP(io) = PerlIO_stdin();
4020 tmpgv = gv_fetchpvs("stdin", GV_ADD|GV_NOTQUAL, SVt_PV);
4022 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4024 tmpgv = gv_fetchpvs("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4027 IoTYPE(io) = IoTYPE_WRONLY;
4028 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
4030 tmpgv = gv_fetchpvs("stdout", GV_ADD|GV_NOTQUAL, SVt_PV);
4032 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4034 PL_stderrgv = gv_fetchpvs("STDERR", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4035 GvMULTI_on(PL_stderrgv);
4036 io = GvIOp(PL_stderrgv);
4037 IoTYPE(io) = IoTYPE_WRONLY;
4038 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
4039 tmpgv = gv_fetchpvs("stderr", GV_ADD|GV_NOTQUAL, SVt_PV);
4041 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4043 PL_statname = newSV(0); /* last filename we did stat on */
4047 Perl_init_argv_symbols(pTHX_ register int argc, register char **argv)
4051 PERL_ARGS_ASSERT_INIT_ARGV_SYMBOLS;
4053 argc--,argv++; /* skip name of script */
4054 if (PL_doswitches) {
4055 for (; argc > 0 && **argv == '-'; argc--,argv++) {
4059 if (argv[0][1] == '-' && !argv[0][2]) {
4063 if ((s = strchr(argv[0], '='))) {
4064 const char *const start_name = argv[0] + 1;
4065 sv_setpv(GvSV(gv_fetchpvn_flags(start_name, s - start_name,
4066 TRUE, SVt_PV)), s + 1);
4069 sv_setiv(GvSV(gv_fetchpv(argv[0]+1, GV_ADD, SVt_PV)),1);
4072 if ((PL_argvgv = gv_fetchpvs("ARGV", GV_ADD|GV_NOTQUAL, SVt_PVAV))) {
4073 GvMULTI_on(PL_argvgv);
4074 (void)gv_AVadd(PL_argvgv);
4075 av_clear(GvAVn(PL_argvgv));
4076 for (; argc > 0; argc--,argv++) {
4077 SV * const sv = newSVpv(argv[0],0);
4078 av_push(GvAVn(PL_argvgv),sv);
4079 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
4080 if (PL_unicode & PERL_UNICODE_ARGV_FLAG)
4083 if (PL_unicode & PERL_UNICODE_WIDESYSCALLS_FLAG) /* Sarathy? */
4084 (void)sv_utf8_decode(sv);
4090 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
4095 PERL_ARGS_ASSERT_INIT_POSTDUMP_SYMBOLS;
4097 PL_toptarget = newSV_type(SVt_PVFM);
4098 sv_setpvs(PL_toptarget, "");
4099 PL_bodytarget = newSV_type(SVt_PVFM);
4100 sv_setpvs(PL_bodytarget, "");
4101 PL_formtarget = PL_bodytarget;
4105 init_argv_symbols(argc,argv);
4107 if ((tmpgv = gv_fetchpvs("0", GV_ADD|GV_NOTQUAL, SVt_PV))) {
4108 sv_setpv(GvSV(tmpgv),PL_origfilename);
4110 if ((PL_envgv = gv_fetchpvs("ENV", GV_ADD|GV_NOTQUAL, SVt_PVHV))) {
4112 bool env_is_not_environ;
4113 GvMULTI_on(PL_envgv);
4114 hv = GvHVn(PL_envgv);
4115 hv_magic(hv, NULL, PERL_MAGIC_env);
4117 #ifdef USE_ENVIRON_ARRAY
4118 /* Note that if the supplied env parameter is actually a copy
4119 of the global environ then it may now point to free'd memory
4120 if the environment has been modified since. To avoid this
4121 problem we treat env==NULL as meaning 'use the default'
4125 env_is_not_environ = env != environ;
4126 if (env_is_not_environ
4127 # ifdef USE_ITHREADS
4128 && PL_curinterp == aTHX
4137 for (; *env; env++) {
4140 if (!(s = strchr(old_var,'=')) || s == old_var)
4143 #if defined(MSDOS) && !defined(DJGPP)
4145 (void)strupr(old_var);
4148 sv = newSVpv(s+1, 0);
4149 (void)hv_store(hv, old_var, s - old_var, sv, 0);
4150 if (env_is_not_environ)
4154 #endif /* USE_ENVIRON_ARRAY */
4155 #endif /* !PERL_MICRO */
4158 #ifdef THREADS_HAVE_PIDS
4159 PL_ppid = (IV)getppid();
4162 /* touch @F array to prevent spurious warnings 20020415 MJD */
4164 (void) get_av("main::F", GV_ADD | GV_ADDMULTI);
4169 S_init_perllib(pTHX)
4173 const char *perl5lib = NULL;
4176 #if defined(WIN32) && !defined(PERL_IS_MINIPERL)
4182 perl5lib = PerlEnv_getenv("PERL5LIB");
4184 * It isn't possible to delete an environment variable with
4185 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4186 * case we treat PERL5LIB as undefined if it has a zero-length value.
4188 #if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
4189 if (perl5lib && *perl5lib != '\0')
4193 incpush_use_sep(perl5lib, 0, INCPUSH_ADD_SUB_DIRS);
4195 s = PerlEnv_getenv("PERLLIB");
4197 incpush_use_sep(s, 0, 0);
4200 /* Treat PERL5?LIB as a possible search list logical name -- the
4201 * "natural" VMS idiom for a Unix path string. We allow each
4202 * element to be a set of |-separated directories for compatibility.
4206 if (my_trnlnm("PERL5LIB",buf,0))
4208 incpush_use_sep(buf, 0, INCPUSH_ADD_SUB_DIRS);
4209 } while (my_trnlnm("PERL5LIB",buf,++idx));
4211 while (my_trnlnm("PERLLIB",buf,idx++))
4212 incpush_use_sep(buf, 0, 0);
4217 #ifndef PERL_IS_MINIPERL
4218 /* miniperl gets just -I..., the split of $ENV{PERL5LIB}, and "." in @INC
4219 (and not the architecture specific directories from $ENV{PERL5LIB}) */
4221 /* Use the ~-expanded versions of APPLLIB (undocumented),
4222 SITEARCH, SITELIB, VENDORARCH, VENDORLIB, ARCHLIB and PRIVLIB
4225 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP),
4226 INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4230 /* sitearch is always relative to sitelib on Windows for
4231 * DLL-based path intuition to work correctly */
4232 # if !defined(WIN32)
4233 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITEARCH_EXP),
4234 INCPUSH_CAN_RELOCATE);
4240 /* this picks up sitearch as well */
4241 s = win32_get_sitelib(PERL_FS_VERSION, &len);
4243 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4245 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_EXP), INCPUSH_CAN_RELOCATE);
4249 #ifdef PERL_VENDORARCH_EXP
4250 /* vendorarch is always relative to vendorlib on Windows for
4251 * DLL-based path intuition to work correctly */
4252 # if !defined(WIN32)
4253 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORARCH_EXP),
4254 INCPUSH_CAN_RELOCATE);
4258 #ifdef PERL_VENDORLIB_EXP
4260 /* this picks up vendorarch as well */
4261 s = win32_get_vendorlib(PERL_FS_VERSION, &len);
4263 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4265 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_EXP),
4266 INCPUSH_CAN_RELOCATE);
4271 S_incpush_use_sep(aTHX_ STR_WITH_LEN(ARCHLIB_EXP), INCPUSH_CAN_RELOCATE);
4275 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
4279 s = win32_get_privlib(PERL_FS_VERSION, &len);
4281 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4284 S_incpush_use_sep(aTHX_ PRIVLIB_EXP, 0, INCPUSH_CAN_RELOCATE);
4286 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PRIVLIB_EXP), INCPUSH_CAN_RELOCATE);
4290 #ifdef PERL_OTHERLIBDIRS
4291 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS),
4292 INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_NOT_BASEDIR
4293 |INCPUSH_CAN_RELOCATE);
4299 * It isn't possible to delete an environment variable with
4300 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4301 * case we treat PERL5LIB as undefined if it has a zero-length value.
4303 #if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
4304 if (perl5lib && *perl5lib != '\0')
4308 incpush_use_sep(perl5lib, 0,
4309 INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
4311 /* Treat PERL5?LIB as a possible search list logical name -- the
4312 * "natural" VMS idiom for a Unix path string. We allow each
4313 * element to be a set of |-separated directories for compatibility.
4317 if (my_trnlnm("PERL5LIB",buf,0))
4319 incpush_use_sep(buf, 0,
4320 INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
4321 } while (my_trnlnm("PERL5LIB",buf,++idx));
4325 /* Use the ~-expanded versions of APPLLIB (undocumented),
4326 SITELIB and VENDORLIB for older versions
4329 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP), INCPUSH_ADD_OLD_VERS
4330 |INCPUSH_NOT_BASEDIR|INCPUSH_CAN_RELOCATE);
4333 #if defined(SITELIB_STEM) && defined(PERL_INC_VERSION_LIST)
4334 /* Search for version-specific dirs below here */
4335 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_STEM),
4336 INCPUSH_ADD_OLD_VERS|INCPUSH_CAN_RELOCATE);
4340 #if defined(PERL_VENDORLIB_STEM) && defined(PERL_INC_VERSION_LIST)
4341 /* Search for version-specific dirs below here */
4342 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_STEM),
4343 INCPUSH_ADD_OLD_VERS|INCPUSH_CAN_RELOCATE);
4346 #ifdef PERL_OTHERLIBDIRS
4347 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS),
4348 INCPUSH_ADD_OLD_VERS|INCPUSH_ADD_ARCHONLY_SUB_DIRS
4349 |INCPUSH_CAN_RELOCATE);
4351 #endif /* !PERL_IS_MINIPERL */
4354 S_incpush(aTHX_ STR_WITH_LEN("."), 0);
4357 #if defined(DOSISH) || defined(EPOC) || defined(__SYMBIAN32__)
4358 # define PERLLIB_SEP ';'
4361 # define PERLLIB_SEP '|'
4363 # define PERLLIB_SEP ':'
4366 #ifndef PERLLIB_MANGLE
4367 # define PERLLIB_MANGLE(s,n) (s)
4370 #ifndef PERL_IS_MINIPERL
4371 /* Push a directory onto @INC if it exists.
4372 Generate a new SV if we do this, to save needing to copy the SV we push
4375 S_incpush_if_exists(pTHX_ AV *const av, SV *dir, SV *const stem)
4380 PERL_ARGS_ASSERT_INCPUSH_IF_EXISTS;
4382 if (PerlLIO_stat(SvPVX_const(dir), &tmpstatbuf) >= 0 &&
4383 S_ISDIR(tmpstatbuf.st_mode)) {
4385 dir = newSVsv(stem);
4387 /* Truncate dir back to stem. */
4388 SvCUR_set(dir, SvCUR(stem));
4395 S_incpush(pTHX_ const char *const dir, STRLEN len, U32 flags)
4398 #ifndef PERL_IS_MINIPERL
4399 const U8 using_sub_dirs
4400 = (U8)flags & (INCPUSH_ADD_VERSIONED_SUB_DIRS
4401 |INCPUSH_ADD_ARCHONLY_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
4402 const U8 add_versioned_sub_dirs
4403 = (U8)flags & INCPUSH_ADD_VERSIONED_SUB_DIRS;
4404 const U8 add_archonly_sub_dirs
4405 = (U8)flags & INCPUSH_ADD_ARCHONLY_SUB_DIRS;
4406 #ifdef PERL_INC_VERSION_LIST
4407 const U8 addoldvers = (U8)flags & INCPUSH_ADD_OLD_VERS;
4410 const U8 canrelocate = (U8)flags & INCPUSH_CAN_RELOCATE;
4411 const U8 unshift = (U8)flags & INCPUSH_UNSHIFT;
4412 const U8 push_basedir = (flags & INCPUSH_NOT_BASEDIR) ? 0 : 1;
4413 AV *const inc = GvAVn(PL_incgv);
4415 PERL_ARGS_ASSERT_INCPUSH;
4418 /* Could remove this vestigial extra block, if we don't mind a lot of
4419 re-indenting diff noise. */
4422 /* Change 20189146be79a0596543441fa369c6bf7f85103f, to fix RT#6665,
4423 arranged to unshift #! line -I onto the front of @INC. However,
4424 -I can add version and architecture specific libraries, and they
4425 need to go first. The old code assumed that it was always
4426 pushing. Hence to make it work, need to push the architecture
4427 (etc) libraries onto a temporary array, then "unshift" that onto
4428 the front of @INC. */
4429 #ifndef PERL_IS_MINIPERL
4430 AV *const av = (using_sub_dirs) ? (unshift ? newAV() : inc) : NULL;
4434 /* I am not convinced that this is valid when PERLLIB_MANGLE is
4435 defined to so something (in os2/os2.c), but the code has been
4436 this way, ignoring any possible changed of length, since
4437 760ac839baf413929cd31cc32ffd6dba6b781a81 (5.003_02) so I'll leave
4439 libdir = newSVpvn(PERLLIB_MANGLE(dir, len), len);
4441 libdir = newSVpv(PERLLIB_MANGLE(dir, 0), 0);
4448 if ((unix = tounixspec_ts(SvPV(libdir,len),NULL)) != NULL) {
4450 while (unix[len-1] == '/') len--; /* Cosmetic */
4451 sv_usepvn(libdir,unix,len);
4454 PerlIO_printf(Perl_error_log,
4455 "Failed to unixify @INC element \"%s\"\n",
4459 /* Do the if() outside the #ifdef to avoid warnings about an unused
4462 #ifdef PERL_RELOCATABLE_INC
4464 * Relocatable include entries are marked with a leading .../
4467 * 0: Remove that leading ".../"
4468 * 1: Remove trailing executable name (anything after the last '/')
4469 * from the perl path to give a perl prefix
4471 * While the @INC element starts "../" and the prefix ends with a real
4472 * directory (ie not . or ..) chop that real directory off the prefix
4473 * and the leading "../" from the @INC element. ie a logical "../"
4475 * Finally concatenate the prefix and the remainder of the @INC element
4476 * The intent is that /usr/local/bin/perl and .../../lib/perl5
4477 * generates /usr/local/lib/perl5
4479 const char *libpath = SvPVX(libdir);
4480 STRLEN libpath_len = SvCUR(libdir);
4481 if (libpath_len >= 4 && memEQ (libpath, ".../", 4)) {
4483 SV * const caret_X = get_sv("\030", 0);
4484 /* Going to use the SV just as a scratch buffer holding a C
4490 /* $^X is *the* source of taint if tainting is on, hence
4491 SvPOK() won't be true. */
4493 assert(SvPOKp(caret_X));
4494 prefix_sv = newSVpvn_flags(SvPVX(caret_X), SvCUR(caret_X),
4496 /* Firstly take off the leading .../
4497 If all else fail we'll do the paths relative to the current
4499 sv_chop(libdir, libpath + 4);
4500 /* Don't use SvPV as we're intentionally bypassing taining,
4501 mortal copies that the mg_get of tainting creates, and
4502 corruption that seems to come via the save stack.
4503 I guess that the save stack isn't correctly set up yet. */
4504 libpath = SvPVX(libdir);
4505 libpath_len = SvCUR(libdir);
4507 /* This would work more efficiently with memrchr, but as it's
4508 only a GNU extension we'd need to probe for it and
4509 implement our own. Not hard, but maybe not worth it? */
4511 prefix = SvPVX(prefix_sv);
4512 lastslash = strrchr(prefix, '/');
4514 /* First time in with the *lastslash = '\0' we just wipe off
4515 the trailing /perl from (say) /usr/foo/bin/perl
4519 while ((*lastslash = '\0'), /* Do that, come what may. */
4520 (libpath_len >= 3 && memEQ(libpath, "../", 3)
4521 && (lastslash = strrchr(prefix, '/')))) {
4522 if (lastslash[1] == '\0'
4523 || (lastslash[1] == '.'
4524 && (lastslash[2] == '/' /* ends "/." */
4525 || (lastslash[2] == '/'
4526 && lastslash[3] == '/' /* or "/.." */
4528 /* Prefix ends "/" or "/." or "/..", any of which
4529 are fishy, so don't do any more logical cleanup.
4533 /* Remove leading "../" from path */
4536 /* Next iteration round the loop removes the last
4537 directory name from prefix by writing a '\0' in
4538 the while clause. */
4540 /* prefix has been terminated with a '\0' to the correct
4541 length. libpath points somewhere into the libdir SV.
4542 We need to join the 2 with '/' and drop the result into
4544 tempsv = Perl_newSVpvf(aTHX_ "%s/%s", prefix, libpath);
4545 SvREFCNT_dec(libdir);
4546 /* And this is the new libdir. */
4549 (PL_uid != PL_euid || PL_gid != PL_egid)) {
4550 /* Need to taint relocated paths if running set ID */
4551 SvTAINTED_on(libdir);
4554 SvREFCNT_dec(prefix_sv);
4558 #ifndef PERL_IS_MINIPERL
4560 * BEFORE pushing libdir onto @INC we may first push version- and
4561 * archname-specific sub-directories.
4563 if (using_sub_dirs) {
4565 #ifdef PERL_INC_VERSION_LIST
4566 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
4567 const char * const incverlist[] = { PERL_INC_VERSION_LIST };
4568 const char * const *incver;
4570 subdir = newSVsv(libdir);
4572 if (add_versioned_sub_dirs) {
4573 /* .../version/archname if -d .../version/archname */
4574 sv_catpvs(subdir, "/" PERL_FS_VERSION "/" ARCHNAME);
4575 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4577 /* .../version if -d .../version */
4578 sv_catpvs(subdir, "/" PERL_FS_VERSION);
4579 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4582 #ifdef PERL_INC_VERSION_LIST
4584 for (incver = incverlist; *incver; incver++) {
4585 /* .../xxx if -d .../xxx */
4586 Perl_sv_catpvf(aTHX_ subdir, "/%s", *incver);
4587 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4592 if (add_archonly_sub_dirs) {
4593 /* .../archname if -d .../archname */
4594 sv_catpvs(subdir, "/" ARCHNAME);
4595 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4599 assert (SvREFCNT(subdir) == 1);
4600 SvREFCNT_dec(subdir);
4602 #endif /* !PERL_IS_MINIPERL */
4603 /* finally add this lib directory at the end of @INC */
4605 #ifdef PERL_IS_MINIPERL
4606 const U32 extra = 0;
4608 U32 extra = av_len(av) + 1;
4610 av_unshift(inc, extra + push_basedir);
4612 av_store(inc, extra, libdir);
4613 #ifndef PERL_IS_MINIPERL
4615 /* av owns a reference, av_store() expects to be donated a
4616 reference, and av expects to be sane when it's cleared.
4617 If I wanted to be naughty and wrong, I could peek inside the
4618 implementation of av_clear(), realise that it uses
4619 SvREFCNT_dec() too, so av's array could be a run of NULLs,
4620 and so directly steal from it (with a memcpy() to inc, and
4621 then memset() to NULL them out. But people copy code from the
4622 core expecting it to be best practise, so let's use the API.
4623 Although studious readers will note that I'm not checking any
4625 av_store(inc, extra, SvREFCNT_inc(*av_fetch(av, extra, FALSE)));
4630 else if (push_basedir) {
4631 av_push(inc, libdir);
4634 if (!push_basedir) {
4635 assert (SvREFCNT(libdir) == 1);
4636 SvREFCNT_dec(libdir);
4642 S_incpush_use_sep(pTHX_ const char *p, STRLEN len, U32 flags)
4646 /* This logic has been broken out from S_incpush(). It may be possible to
4649 PERL_ARGS_ASSERT_INCPUSH_USE_SEP;
4651 /* perl compiled with -DPERL_RELOCATABLE_INCPUSH will ignore the len
4652 * argument to incpush_use_sep. This allows creation of relocatable
4653 * Perl distributions that patch the binary at install time. Those
4654 * distributions will have to provide their own relocation tools; this
4655 * is not a feature otherwise supported by core Perl.
4657 #ifndef PERL_RELOCATABLE_INCPUSH
4664 /* Break at all separators */
4665 while ((s = (const char*)memchr(p, PERLLIB_SEP, end - p))) {
4667 /* skip any consecutive separators */
4669 /* Uncomment the next line for PATH semantics */
4670 /* But you'll need to write tests */
4671 /* av_push(GvAVn(PL_incgv), newSVpvs(".")); */
4673 incpush(p, (STRLEN)(s - p), flags);
4678 incpush(p, (STRLEN)(end - p), flags);
4683 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
4687 volatile const line_t oldline = PL_curcop ? CopLINE(PL_curcop) : 0;
4693 PERL_ARGS_ASSERT_CALL_LIST;
4695 while (av_len(paramList) >= 0) {
4696 cv = MUTABLE_CV(av_shift(paramList));
4698 if (paramList == PL_beginav) {
4699 /* save PL_beginav for compiler */
4700 Perl_av_create_and_push(aTHX_ &PL_beginav_save, MUTABLE_SV(cv));
4702 else if (paramList == PL_checkav) {
4703 /* save PL_checkav for compiler */
4704 Perl_av_create_and_push(aTHX_ &PL_checkav_save, MUTABLE_SV(cv));
4706 else if (paramList == PL_unitcheckav) {
4707 /* save PL_unitcheckav for compiler */
4708 Perl_av_create_and_push(aTHX_ &PL_unitcheckav_save, MUTABLE_SV(cv));
4719 PL_madskills |= 16384;
4724 PL_madskills &= ~16384;
4727 (void)SvPV_const(atsv, len);
4729 PL_curcop = &PL_compiling;
4730 CopLINE_set(PL_curcop, oldline);
4731 if (paramList == PL_beginav)
4732 sv_catpvs(atsv, "BEGIN failed--compilation aborted");
4734 Perl_sv_catpvf(aTHX_ atsv,
4735 "%s failed--call queue aborted",
4736 paramList == PL_checkav ? "CHECK"
4737 : paramList == PL_initav ? "INIT"
4738 : paramList == PL_unitcheckav ? "UNITCHECK"
4740 while (PL_scopestack_ix > oldscope)
4743 Perl_croak(aTHX_ "%"SVf"", SVfARG(atsv));
4750 /* my_exit() was called */
4751 while (PL_scopestack_ix > oldscope)
4754 PL_curstash = PL_defstash;
4755 PL_curcop = &PL_compiling;
4756 CopLINE_set(PL_curcop, oldline);
4762 PL_curcop = &PL_compiling;
4763 CopLINE_set(PL_curcop, oldline);
4766 PerlIO_printf(Perl_error_log, "panic: restartop\n");
4775 Perl_my_exit(pTHX_ U32 status)
4786 STATUS_EXIT_SET(status);
4793 Perl_my_failure_exit(pTHX)
4797 /* We have been called to fall on our sword. The desired exit code
4798 * should be already set in STATUS_UNIX, but could be shifted over
4799 * by 8 bits. STATUS_UNIX_EXIT_SET will handle the cases where a
4802 * If an error code has not been set, then force the issue.
4804 if (MY_POSIX_EXIT) {
4806 /* According to the die_exit.t tests, if errno is non-zero */
4807 /* It should be used for the error status. */
4809 if (errno == EVMSERR) {
4810 STATUS_NATIVE = vaxc$errno;
4813 /* According to die_exit.t tests, if the child_exit code is */
4814 /* also zero, then we need to exit with a code of 255 */
4815 if ((errno != 0) && (errno < 256))
4816 STATUS_UNIX_EXIT_SET(errno);
4817 else if (STATUS_UNIX < 255) {
4818 STATUS_UNIX_EXIT_SET(255);
4823 /* The exit code could have been set by $? or vmsish which
4824 * means that it may not have fatal set. So convert
4825 * success/warning codes to fatal with out changing
4826 * the POSIX status code. The severity makes VMS native
4827 * status handling work, while UNIX mode programs use the
4828 * the POSIX exit codes.
4830 if ((STATUS_NATIVE & (STS$K_SEVERE|STS$K_ERROR)) == 0) {
4831 STATUS_NATIVE &= STS$M_COND_ID;
4832 STATUS_NATIVE |= STS$K_ERROR | STS$M_INHIB_MSG;
4836 /* Traditionally Perl on VMS always expects a Fatal Error. */
4837 if (vaxc$errno & 1) {
4839 /* So force success status to failure */
4840 if (STATUS_NATIVE & 1)
4845 STATUS_UNIX = EINTR; /* In case something cares */
4850 STATUS_NATIVE = vaxc$errno; /* Should already be this */
4852 /* Encode the severity code */
4853 severity = STATUS_NATIVE & STS$M_SEVERITY;
4854 STATUS_UNIX = (severity ? severity : 1) << 8;
4856 /* Perl expects this to be a fatal error */
4857 if (severity != STS$K_SEVERE)
4866 STATUS_UNIX_SET(errno);
4868 exitstatus = STATUS_UNIX >> 8;
4869 if (exitstatus & 255)
4870 STATUS_UNIX_SET(exitstatus);
4872 STATUS_UNIX_SET(255);
4879 S_my_exit_jump(pTHX)
4884 SvREFCNT_dec(PL_e_script);
4888 POPSTACK_TO(PL_mainstack);
4896 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen)
4899 const char * const p = SvPVX_const(PL_e_script);
4900 const char *nl = strchr(p, '\n');
4902 PERL_UNUSED_ARG(idx);
4903 PERL_UNUSED_ARG(maxlen);
4905 nl = (nl) ? nl+1 : SvEND(PL_e_script);
4907 filter_del(read_e_script);
4910 sv_catpvn(buf_sv, p, nl-p);
4911 sv_chop(PL_e_script, nl);
4917 * c-indentation-style: bsd
4919 * indent-tabs-mode: t
4922 * ex: set ts=8 sts=4 sw=4 noet: