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
1709 # ifdef USE_PERL_ATOF
1712 # ifdef USE_SITECUSTOMIZE
1713 " USE_SITECUSTOMIZE"
1716 PERL_UNUSED_ARG(cv);
1717 PERL_UNUSED_ARG(items);
1719 EXTEND(SP, entries);
1721 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1722 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1723 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1727 PUSHs(Perl_newSVpvn_flags(aTHX_
1728 STR_WITH_LEN("Compiled at " __DATE__ " " __TIME__),
1731 PUSHs(Perl_newSVpvn_flags(aTHX_ STR_WITH_LEN("Compiled on " __DATE__),
1735 PUSHs(&PL_sv_undef);
1738 for (i = 1; i <= local_patch_count; i++) {
1739 /* This will be an undef, if PL_localpatches[i] is NULL. */
1740 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1746 #define INCPUSH_UNSHIFT 0x01
1747 #define INCPUSH_ADD_OLD_VERS 0x02
1748 #define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1749 #define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1750 #define INCPUSH_NOT_BASEDIR 0x10
1751 #define INCPUSH_CAN_RELOCATE 0x20
1752 #define INCPUSH_ADD_SUB_DIRS \
1753 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
1756 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
1760 int argc = PL_origargc;
1761 char **argv = PL_origargv;
1762 const char *scriptname = NULL;
1763 VOL bool dosearch = FALSE;
1765 bool doextract = FALSE;
1766 const char *cddir = NULL;
1767 #ifdef USE_SITECUSTOMIZE
1768 bool minus_f = FALSE;
1770 SV *linestr_sv = newSV_type(SVt_PVIV);
1771 bool add_read_e_script = FALSE;
1773 PL_phase = PERL_PHASE_START;
1775 SvGROW(linestr_sv, 80);
1776 sv_setpvs(linestr_sv,"");
1782 for (argc--,argv++; argc > 0; argc--,argv++) {
1783 if (argv[0][0] != '-' || !argv[0][1])
1789 #ifndef PERL_STRICT_CR
1813 if ((s = moreswitches(s)))
1818 CHECK_MALLOC_TOO_LATE_FOR('t');
1819 if( !PL_tainting ) {
1820 PL_taint_warn = TRUE;
1826 CHECK_MALLOC_TOO_LATE_FOR('T');
1828 PL_taint_warn = FALSE;
1836 forbid_setid('e', FALSE);
1838 PL_e_script = newSVpvs("");
1839 add_read_e_script = TRUE;
1842 sv_catpv(PL_e_script, s);
1844 sv_catpv(PL_e_script, argv[1]);
1848 Perl_croak(aTHX_ "No code specified for -%c", c);
1849 sv_catpvs(PL_e_script, "\n");
1853 #ifdef USE_SITECUSTOMIZE
1859 case 'I': /* -I handled both here and in moreswitches() */
1860 forbid_setid('I', FALSE);
1861 if (!*++s && (s=argv[1]) != NULL) {
1865 STRLEN len = strlen(s);
1866 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
1869 Perl_croak(aTHX_ "No directory specified for -I");
1872 forbid_setid('S', FALSE);
1881 opts_prog = newSVpvs("use Config; Config::_V()");
1885 opts_prog = Perl_newSVpvf(aTHX_
1886 "use Config; Config::config_vars(qw%c%s%c)",
1890 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
1891 /* don't look for script or read stdin */
1892 scriptname = BIT_BUCKET;
1904 if (!*++s || isSPACE(*s)) {
1908 /* catch use of gnu style long options */
1909 if (strEQ(s, "version")) {
1913 if (strEQ(s, "help")) {
1920 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1931 #ifndef SECURE_INTERNAL_GETENV
1934 (s = PerlEnv_getenv("PERL5OPT")))
1938 if (*s == '-' && *(s+1) == 'T') {
1939 CHECK_MALLOC_TOO_LATE_FOR('T');
1941 PL_taint_warn = FALSE;
1944 char *popt_copy = NULL;
1957 if (!strchr("CDIMUdmtwW", *s))
1958 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
1962 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
1963 s = popt_copy + (s - d);
1971 if( !PL_tainting ) {
1972 PL_taint_warn = TRUE;
1983 #if defined(USE_SITECUSTOMIZE)
1985 /* The games with local $! are to avoid setting errno if there is no
1986 sitecustomize script. */
1987 # ifdef PERL_IS_MINIPERL
1988 AV *const inc = GvAV(PL_incgv);
1989 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
1992 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
1994 "BEGIN { do {local $!; -f '%"SVf"/buildcustomize.pl'} && do '%"SVf"/buildcustomize.pl' }", *inc0, *inc0));
1997 /* SITELIB_EXP is a function call on Win32. */
1998 const char *const sitelib = SITELIB_EXP;
1999 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2001 "BEGIN { do {local $!; -f '%s/sitecustomize.pl'} && do '%s/sitecustomize.pl' }", sitelib, sitelib));
2007 scriptname = argv[0];
2010 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2012 else if (scriptname == NULL) {
2014 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
2020 /* Set $^X early so that it can be used for relocatable paths in @INC */
2021 assert (!PL_tainted);
2023 S_set_caret_X(aTHX);
2028 bool suidscript = FALSE;
2030 open_script(scriptname, dosearch, &suidscript, &rsfp);
2032 validate_suid(validarg, scriptname, fdscript, suidscript,
2036 # if defined(SIGCHLD) || defined(SIGCLD)
2039 # define SIGCHLD SIGCLD
2041 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2042 if (sigstate == (Sighandler_t) SIG_IGN) {
2043 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2044 "Can't ignore signal CHLD, forcing to default");
2045 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2053 /* This will croak if suidscript is true, as -x cannot be used with
2055 forbid_setid('x', suidscript);
2056 /* Hence you can't get here if suidscript is true */
2058 find_beginning(linestr_sv, rsfp);
2059 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2060 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2064 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
2065 CvUNIQUE_on(PL_compcv);
2067 CvPADLIST(PL_compcv) = pad_new(0);
2069 PL_isarev = newHV();
2072 boot_core_UNIVERSAL();
2074 newXS("Internals::V", S_Internals_V, __FILE__);
2077 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
2079 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC) || defined(SYMBIAN)
2085 # ifdef HAS_SOCKS5_INIT
2086 socks5_init(argv[0]);
2092 init_predump_symbols();
2093 /* init_postdump_symbols not currently designed to be called */
2094 /* more than once (ENV isn't cleared first, for example) */
2095 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
2097 init_postdump_symbols(argc,argv,env);
2099 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2100 * or explicitly in some platforms.
2101 * locale.c:Perl_init_i18nl10n() if the environment
2102 * look like the user wants to use UTF-8. */
2103 #if defined(__SYMBIAN32__)
2104 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2106 # ifndef PERL_IS_MINIPERL
2108 /* Requires init_predump_symbols(). */
2109 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
2114 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
2115 * and the default open disciplines. */
2116 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2117 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2119 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2120 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2121 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2123 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2124 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2125 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2127 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2128 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
2129 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2131 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2132 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2135 sv_setpvs(sv, ":utf8\0:utf8");
2137 sv_setpvs(sv, ":utf8\0");
2140 sv_setpvs(sv, "\0:utf8");
2149 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2150 if (strEQ(s, "unsafe"))
2151 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2152 else if (strEQ(s, "safe"))
2153 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2155 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2162 if ((s = PerlEnv_getenv("PERL_XMLDUMP"))) {
2166 PL_xmlfp = PerlIO_stdout();
2168 PL_xmlfp = PerlIO_open(s, "w");
2170 Perl_croak(aTHX_ "Can't open %s", s);
2172 my_setenv("PERL_XMLDUMP", NULL); /* hide from subprocs */
2178 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2179 PL_madskills = atoi(s);
2180 my_setenv("PERL_MADSKILLS", NULL); /* hide from subprocs */
2185 lex_start(linestr_sv, rsfp, 0);
2186 PL_subname = newSVpvs("main");
2188 if (add_read_e_script)
2189 filter_add(read_e_script, NULL);
2191 /* now parse the script */
2193 SETERRNO(0,SS_NORMAL);
2194 if (yyparse(GRAMPROG) || PL_parser->error_count) {
2196 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
2198 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
2202 CopLINE_set(PL_curcop, 0);
2203 PL_curstash = PL_defstash;
2205 SvREFCNT_dec(PL_e_script);
2213 SAVECOPFILE(PL_curcop);
2214 SAVECOPLINE(PL_curcop);
2215 gv_check(PL_defstash);
2224 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2225 dump_mstats("after compilation:");
2230 PL_restartjmpenv = NULL;
2236 =for apidoc perl_run
2238 Tells a Perl interpreter to run. See L<perlembed>.
2251 PERL_ARGS_ASSERT_PERL_RUN;
2252 #ifndef MULTIPLICITY
2253 PERL_UNUSED_ARG(my_perl);
2256 oldscope = PL_scopestack_ix;
2264 cxstack_ix = -1; /* start context stack again */
2266 case 0: /* normal completion */
2270 case 2: /* my_exit() */
2271 while (PL_scopestack_ix > oldscope)
2274 PL_curstash = PL_defstash;
2275 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
2276 PL_endav && !PL_minus_c) {
2277 PL_phase = PERL_PHASE_END;
2278 call_list(oldscope, PL_endav);
2281 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2282 dump_mstats("after execution: ");
2288 POPSTACK_TO(PL_mainstack);
2291 PerlIO_printf(Perl_error_log, "panic: restartop\n");
2302 S_run_body(pTHX_ I32 oldscope)
2305 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
2306 PL_sawampersand ? "Enabling" : "Omitting"));
2308 if (!PL_restartop) {
2312 exit(0); /* less likely to core dump than my_exit(0) */
2316 if (DEBUG_x_TEST || DEBUG_B_TEST)
2317 dump_all_perl(!DEBUG_B_TEST);
2319 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
2323 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
2326 if (PERLDB_SINGLE && PL_DBsingle)
2327 sv_setiv(PL_DBsingle, 1);
2329 PL_phase = PERL_PHASE_INIT;
2330 call_list(oldscope, PL_initav);
2332 #ifdef PERL_DEBUG_READONLY_OPS
2333 Perl_pending_Slabs_to_ro(aTHX);
2339 PL_phase = PERL_PHASE_RUN;
2342 PL_restartjmpenv = NULL;
2343 PL_op = PL_restartop;
2347 else if (PL_main_start) {
2348 CvDEPTH(PL_main_cv) = 1;
2349 PL_op = PL_main_start;
2357 =head1 SV Manipulation Functions
2359 =for apidoc p||get_sv
2361 Returns the SV of the specified Perl scalar. C<flags> are passed to
2362 C<gv_fetchpv>. If C<GV_ADD> is set and the
2363 Perl variable does not exist then it will be created. If C<flags> is zero
2364 and the variable does not exist then NULL is returned.
2370 Perl_get_sv(pTHX_ const char *name, I32 flags)
2374 PERL_ARGS_ASSERT_GET_SV;
2376 gv = gv_fetchpv(name, flags, SVt_PV);
2383 =head1 Array Manipulation Functions
2385 =for apidoc p||get_av
2387 Returns the AV of the specified Perl array. C<flags> are passed to
2388 C<gv_fetchpv>. If C<GV_ADD> is set and the
2389 Perl variable does not exist then it will be created. If C<flags> is zero
2390 and the variable does not exist then NULL is returned.
2396 Perl_get_av(pTHX_ const char *name, I32 flags)
2398 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
2400 PERL_ARGS_ASSERT_GET_AV;
2410 =head1 Hash Manipulation Functions
2412 =for apidoc p||get_hv
2414 Returns the HV of the specified Perl hash. C<flags> are passed to
2415 C<gv_fetchpv>. If C<GV_ADD> is set and the
2416 Perl variable does not exist then it will be created. If C<flags> is zero
2417 and the variable does not exist then NULL is returned.
2423 Perl_get_hv(pTHX_ const char *name, I32 flags)
2425 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
2427 PERL_ARGS_ASSERT_GET_HV;
2437 =head1 CV Manipulation Functions
2439 =for apidoc p||get_cvn_flags
2441 Returns the CV of the specified Perl subroutine. C<flags> are passed to
2442 C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2443 exist then it will be declared (which has the same effect as saying
2444 C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2445 then NULL is returned.
2447 =for apidoc p||get_cv
2449 Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
2455 Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
2457 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
2458 /* XXX this is probably not what they think they're getting.
2459 * It has the same effect as "sub name;", i.e. just a forward
2462 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2464 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
2465 SV *const sv = newSVpvn_flags(name, len, flags & SVf_UTF8);
2466 return newSUB(start_subparse(FALSE, 0),
2467 newSVOP(OP_CONST, 0, sv),
2475 /* Nothing in core calls this now, but we can't replace it with a macro and
2476 move it to mathoms.c as a macro would evaluate name twice. */
2478 Perl_get_cv(pTHX_ const char *name, I32 flags)
2480 PERL_ARGS_ASSERT_GET_CV;
2482 return get_cvn_flags(name, strlen(name), flags);
2485 /* Be sure to refetch the stack pointer after calling these routines. */
2489 =head1 Callback Functions
2491 =for apidoc p||call_argv
2493 Performs a callback to the specified Perl sub. See L<perlcall>.
2499 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
2501 /* See G_* flags in cop.h */
2502 /* null terminated arg list */
2507 PERL_ARGS_ASSERT_CALL_ARGV;
2512 mXPUSHs(newSVpv(*argv,0));
2517 return call_pv(sub_name, flags);
2521 =for apidoc p||call_pv
2523 Performs a callback to the specified Perl sub. See L<perlcall>.
2529 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
2530 /* name of the subroutine */
2531 /* See G_* flags in cop.h */
2533 PERL_ARGS_ASSERT_CALL_PV;
2535 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
2539 =for apidoc p||call_method
2541 Performs a callback to the specified Perl method. The blessed object must
2542 be on the stack. See L<perlcall>.
2548 Perl_call_method(pTHX_ const char *methname, I32 flags)
2549 /* name of the subroutine */
2550 /* See G_* flags in cop.h */
2553 PERL_ARGS_ASSERT_CALL_METHOD;
2555 len = strlen(methname);
2557 /* XXX: sv_2mortal(newSVpvn_share(methname, len)) can be faster */
2558 return call_sv(newSVpvn_flags(methname, len, SVs_TEMP), flags | G_METHOD);
2561 /* May be called with any of a CV, a GV, or an SV containing the name. */
2563 =for apidoc p||call_sv
2565 Performs a callback to the Perl sub whose name is in the SV. See
2572 Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
2573 /* See G_* flags in cop.h */
2576 LOGOP myop; /* fake syntax tree node */
2581 bool oldcatch = CATCH_GET;
2583 OP* const oldop = PL_op;
2586 PERL_ARGS_ASSERT_CALL_SV;
2588 if (flags & G_DISCARD) {
2592 if (!(flags & G_WANT)) {
2593 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2598 Zero(&myop, 1, LOGOP);
2599 myop.op_next = NULL;
2600 if (!(flags & G_NOARGS))
2601 myop.op_flags |= OPf_STACKED;
2602 myop.op_flags |= OP_GIMME_REVERSE(flags);
2606 EXTEND(PL_stack_sp, 1);
2607 *++PL_stack_sp = sv;
2609 oldscope = PL_scopestack_ix;
2611 if (PERLDB_SUB && PL_curstash != PL_debstash
2612 /* Handle first BEGIN of -d. */
2613 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
2614 /* Try harder, since this may have been a sighandler, thus
2615 * curstash may be meaningless. */
2616 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
2617 && !(flags & G_NODEBUG))
2618 PL_op->op_private |= OPpENTERSUB_DB;
2620 if (flags & G_METHOD) {
2621 Zero(&method_op, 1, UNOP);
2622 method_op.op_next = PL_op;
2623 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2624 method_op.op_type = OP_METHOD;
2625 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
2626 myop.op_type = OP_ENTERSUB;
2627 PL_op = (OP*)&method_op;
2630 if (!(flags & G_EVAL)) {
2632 CALL_BODY_SUB((OP*)&myop);
2633 retval = PL_stack_sp - (PL_stack_base + oldmark);
2634 CATCH_SET(oldcatch);
2637 myop.op_other = (OP*)&myop;
2639 create_eval_scope(flags|G_FAKINGEVAL);
2647 CALL_BODY_SUB((OP*)&myop);
2648 retval = PL_stack_sp - (PL_stack_base + oldmark);
2649 if (!(flags & G_KEEPERR)) {
2657 /* my_exit() was called */
2658 PL_curstash = PL_defstash;
2665 PL_restartjmpenv = NULL;
2666 PL_op = PL_restartop;
2670 PL_stack_sp = PL_stack_base + oldmark;
2671 if ((flags & G_WANT) == G_ARRAY)
2675 *++PL_stack_sp = &PL_sv_undef;
2680 if (PL_scopestack_ix > oldscope)
2681 delete_eval_scope();
2685 if (flags & G_DISCARD) {
2686 PL_stack_sp = PL_stack_base + oldmark;
2695 /* Eval a string. The G_EVAL flag is always assumed. */
2698 =for apidoc p||eval_sv
2700 Tells Perl to C<eval> the string in the SV. It supports the same flags
2701 as C<call_sv>, with the obvious exception of G_EVAL. See L<perlcall>.
2707 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
2709 /* See G_* flags in cop.h */
2713 UNOP myop; /* fake syntax tree node */
2714 VOL I32 oldmark = SP - PL_stack_base;
2717 OP* const oldop = PL_op;
2720 PERL_ARGS_ASSERT_EVAL_SV;
2722 if (flags & G_DISCARD) {
2729 Zero(PL_op, 1, UNOP);
2730 EXTEND(PL_stack_sp, 1);
2731 *++PL_stack_sp = sv;
2733 if (!(flags & G_NOARGS))
2734 myop.op_flags = OPf_STACKED;
2735 myop.op_next = NULL;
2736 myop.op_type = OP_ENTEREVAL;
2737 myop.op_flags |= OP_GIMME_REVERSE(flags);
2738 if (flags & G_KEEPERR)
2739 myop.op_flags |= OPf_SPECIAL;
2741 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2742 * before a PUSHEVAL, which corrupts the stack after a croak */
2743 TAINT_PROPER("eval_sv()");
2749 if (PL_op == (OP*)(&myop)) {
2750 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2752 goto fail; /* failed in compilation */
2755 retval = PL_stack_sp - (PL_stack_base + oldmark);
2756 if (!(flags & G_KEEPERR)) {
2764 /* my_exit() was called */
2765 PL_curstash = PL_defstash;
2772 PL_restartjmpenv = NULL;
2773 PL_op = PL_restartop;
2778 PL_stack_sp = PL_stack_base + oldmark;
2779 if ((flags & G_WANT) == G_ARRAY)
2783 *++PL_stack_sp = &PL_sv_undef;
2789 if (flags & G_DISCARD) {
2790 PL_stack_sp = PL_stack_base + oldmark;
2800 =for apidoc p||eval_pv
2802 Tells Perl to C<eval> the given string and return an SV* result.
2808 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
2812 SV* sv = newSVpv(p, 0);
2814 PERL_ARGS_ASSERT_EVAL_PV;
2816 eval_sv(sv, G_SCALAR);
2823 if (croak_on_error && SvTRUE(ERRSV)) {
2824 Perl_croak(aTHX_ "%s", SvPVx_nolen_const(ERRSV));
2830 /* Require a module. */
2833 =head1 Embedding Functions
2835 =for apidoc p||require_pv
2837 Tells Perl to C<require> the file named by the string argument. It is
2838 analogous to the Perl code C<eval "require '$file'">. It's even
2839 implemented that way; consider using load_module instead.
2844 Perl_require_pv(pTHX_ const char *pv)
2850 PERL_ARGS_ASSERT_REQUIRE_PV;
2852 PUSHSTACKi(PERLSI_REQUIRE);
2854 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2855 eval_sv(sv_2mortal(sv), G_DISCARD);
2861 S_usage(pTHX_ const char *name) /* XXX move this out into a module ? */
2863 /* This message really ought to be max 23 lines.
2864 * Removed -h because the user already knows that option. Others? */
2866 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
2867 minimum of 509 character string literals. */
2868 static const char * const usage_msg[] = {
2869 " -0[octal] specify record separator (\\0, if no argument)\n"
2870 " -a autosplit mode with -n or -p (splits $_ into @F)\n"
2871 " -C[number/list] enables the listed Unicode features\n"
2872 " -c check syntax only (runs BEGIN and CHECK blocks)\n"
2873 " -d[:debugger] run program under debugger\n"
2874 " -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
2875 " -e program one line of program (several -e's allowed, omit programfile)\n"
2876 " -E program like -e, but enables all optional features\n"
2877 " -f don't do $sitelib/sitecustomize.pl at startup\n"
2878 " -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
2879 " -i[extension] edit <> files in place (makes backup if extension supplied)\n"
2880 " -Idirectory specify @INC/#include directory (several -I's allowed)\n",
2881 " -l[octal] enable line ending processing, specifies line terminator\n"
2882 " -[mM][-]module execute \"use/no module...\" before executing program\n"
2883 " -n assume \"while (<>) { ... }\" loop around program\n"
2884 " -p assume loop like -n but print line also, like sed\n"
2885 " -s enable rudimentary parsing for switches after programfile\n"
2886 " -S look for programfile using PATH environment variable\n",
2887 " -t enable tainting warnings\n"
2888 " -T enable tainting checks\n"
2889 " -u dump core after parsing program\n"
2890 " -U allow unsafe operations\n"
2891 " -v print version, patchlevel and license\n"
2892 " -V[:variable] print configuration summary (or a single Config.pm variable)\n",
2893 " -w enable many useful warnings\n"
2894 " -W enable all warnings\n"
2895 " -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
2896 " -X disable all warnings\n"
2898 "Run 'perldoc perl' for more help with Perl.\n\n",
2901 const char * const *p = usage_msg;
2902 PerlIO *out = PerlIO_stdout();
2904 PERL_ARGS_ASSERT_USAGE;
2907 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
2910 PerlIO_puts(out, *p++);
2913 /* convert a string of -D options (or digits) into an int.
2914 * sets *s to point to the char after the options */
2918 Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
2920 static const char * const usage_msgd[] = {
2921 " Debugging flag values: (see also -d)\n"
2922 " p Tokenizing and parsing (with v, displays parse stack)\n"
2923 " s Stack snapshots (with v, displays all stacks)\n"
2924 " l Context (loop) stack processing\n"
2925 " t Trace execution\n"
2926 " o Method and overloading resolution\n",
2927 " c String/numeric conversions\n"
2928 " P Print profiling info, source file input state\n"
2929 " m Memory and SV allocation\n"
2930 " f Format processing\n"
2931 " r Regular expression parsing and execution\n"
2932 " x Syntax tree dump\n",
2933 " u Tainting checks\n"
2934 " H Hash dump -- usurps values()\n"
2935 " X Scratchpad allocation\n"
2938 " R Include reference counts of dumped variables (eg when using -Ds)\n",
2939 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
2940 " v Verbose: use in conjunction with other flags\n"
2941 " C Copy On Write\n"
2942 " A Consistency checks on internal structures\n"
2943 " q quiet - currently only suppresses the 'EXECUTING' message\n"
2944 " M trace smart match resolution\n"
2945 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
2950 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
2953 /* if adding extra options, remember to update DEBUG_MASK */
2954 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMB";
2956 for (; isALNUM(**s); (*s)++) {
2957 const char * const d = strchr(debopts,**s);
2959 i |= 1 << (d - debopts);
2960 else if (ckWARN_d(WARN_DEBUGGING))
2961 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2962 "invalid option -D%c, use -D'' to see choices\n", **s);
2965 else if (isDIGIT(**s)) {
2967 for (; isALNUM(**s); (*s)++) ;
2969 else if (givehelp) {
2970 const char *const *p = usage_msgd;
2971 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
2974 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
2975 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2976 "-Dp not implemented on this platform\n");
2982 /* This routine handles any switches that can be given during run */
2985 Perl_moreswitches(pTHX_ const char *s)
2989 const char option = *s; /* used to remember option in -m/-M code */
2991 PERL_ARGS_ASSERT_MORESWITCHES;
2999 SvREFCNT_dec(PL_rs);
3000 if (s[1] == 'x' && s[2]) {
3001 const char *e = s+=2;
3007 flags = PERL_SCAN_SILENT_ILLDIGIT;
3008 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3009 if (s + numlen < e) {
3010 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3014 PL_rs = newSVpvs("");
3015 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
3016 tmps = (U8*)SvPVX(PL_rs);
3017 uvchr_to_utf8(tmps, rschar);
3018 SvCUR_set(PL_rs, UNISKIP(rschar));
3023 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3024 if (rschar & ~((U8)~0))
3025 PL_rs = &PL_sv_undef;
3026 else if (!rschar && numlen >= 2)
3027 PL_rs = newSVpvs("");
3029 char ch = (char)rschar;
3030 PL_rs = newSVpvn(&ch, 1);
3033 sv_setsv(get_sv("/", GV_ADD), PL_rs);
3038 PL_unicode = parse_unicode_opts( (const char **)&s );
3039 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3045 while (*s && !isSPACE(*s)) ++s;
3046 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
3057 forbid_setid('d', FALSE);
3060 /* -dt indicates to the debugger that threads will be used */
3061 if (*s == 't' && !isALNUM(s[1])) {
3063 my_setenv("PERL5DB_THREADED", "1");
3066 /* The following permits -d:Mod to accepts arguments following an =
3067 in the fashion that -MSome::Mod does. */
3068 if (*s == ':' || *s == '=') {
3075 sv = newSVpvs("no Devel::");
3077 sv = newSVpvs("use Devel::");
3081 end = s + strlen(s);
3083 /* We now allow -d:Module=Foo,Bar and -d:-Module */
3084 while(isALNUM(*s) || *s==':') ++s;
3086 sv_catpvn(sv, start, end - start);
3088 sv_catpvn(sv, start, s-start);
3089 /* Don't use NUL as q// delimiter here, this string goes in the
3091 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
3094 my_setenv("PERL5DB", SvPV_nolen_const(sv));
3098 PL_perldb = PERLDB_ALL;
3105 forbid_setid('D', FALSE);
3107 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
3108 #else /* !DEBUGGING */
3109 if (ckWARN_d(WARN_DEBUGGING))
3110 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3111 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
3112 for (s++; isALNUM(*s); s++) ;
3117 usage(PL_origargv[0]);
3120 Safefree(PL_inplace);
3121 #if defined(__CYGWIN__) /* do backup extension automagically */
3122 if (*(s+1) == '\0') {
3123 PL_inplace = savepvs(".bak");
3126 #endif /* __CYGWIN__ */
3128 const char * const start = ++s;
3129 while (*s && !isSPACE(*s))
3132 PL_inplace = savepvn(start, s - start);
3136 if (*s == '-') /* Additional switches on #! line. */
3140 case 'I': /* -I handled both here and in parse_body() */
3141 forbid_setid('I', FALSE);
3143 while (*s && isSPACE(*s))
3148 /* ignore trailing spaces (possibly followed by other switches) */
3150 for (e = p; *e && !isSPACE(*e); e++) ;
3154 } while (*p && *p != '-');
3156 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
3162 Perl_croak(aTHX_ "No directory specified for -I");
3168 SvREFCNT_dec(PL_ors_sv);
3174 PL_ors_sv = newSVpvs("\n");
3175 numlen = 3 + (*s == '0');
3176 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
3180 if (RsPARA(PL_rs)) {
3181 PL_ors_sv = newSVpvs("\n\n");
3184 PL_ors_sv = newSVsv(PL_rs);
3189 forbid_setid('M', FALSE); /* XXX ? */
3192 forbid_setid('m', FALSE); /* XXX ? */
3197 const char *use = "use ";
3199 /* -M-foo == 'no foo' */
3200 /* Leading space on " no " is deliberate, to make both
3201 possibilities the same length. */
3202 if (*s == '-') { use = " no "; ++s; }
3203 sv = newSVpvn(use,4);
3205 /* We allow -M'Module qw(Foo Bar)' */
3206 while(isALNUM(*s) || *s==':') {
3215 Perl_croak(aTHX_ "Module name required with -%c option",
3218 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3219 "contains single ':'",
3220 (int)(s - start), start, option);
3221 end = s + strlen(s);
3223 sv_catpvn(sv, start, end - start);
3224 if (option == 'm') {
3226 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
3227 sv_catpvs( sv, " ()");
3230 sv_catpvn(sv, start, s-start);
3231 /* Use NUL as q''-delimiter. */
3232 sv_catpvs(sv, " split(/,/,q\0");
3234 sv_catpvn(sv, s, end - s);
3235 sv_catpvs(sv, "\0)");
3238 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
3241 Perl_croak(aTHX_ "Missing argument to -%c", option);
3252 forbid_setid('s', FALSE);
3253 PL_doswitches = TRUE;
3267 PL_do_undump = TRUE;
3275 if (!sv_derived_from(PL_patchlevel, "version"))
3276 upg_version(PL_patchlevel, TRUE);
3279 SV* level= vstringify(PL_patchlevel);
3280 #ifdef PERL_PATCHNUM
3281 # ifdef PERL_GIT_UNCOMMITTED_CHANGES
3282 SV *num = newSVpvs(PERL_PATCHNUM "*");
3284 SV *num = newSVpvs(PERL_PATCHNUM);
3287 if (sv_len(num)>=sv_len(level) && strnEQ(SvPV_nolen(num),SvPV_nolen(level),sv_len(level))) {
3288 SvREFCNT_dec(level);
3291 Perl_sv_catpvf(aTHX_ level, " (%"SVf")", num);
3295 PerlIO_printf(PerlIO_stdout(),
3296 "\nThis is perl " STRINGIFY(PERL_REVISION)
3297 ", version " STRINGIFY(PERL_VERSION)
3298 ", subversion " STRINGIFY(PERL_SUBVERSION)
3299 " (%"SVf") built for " ARCHNAME, level
3301 SvREFCNT_dec(level);
3304 /* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3305 PerlIO_printf(PerlIO_stdout(),
3306 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
3307 SVfARG(vstringify(PL_patchlevel))));
3308 PerlIO_printf(PerlIO_stdout(),
3309 Perl_form(aTHX_ " built under %s at %s %s\n",
3310 OSNAME, __DATE__, __TIME__));
3311 PerlIO_printf(PerlIO_stdout(),
3312 Perl_form(aTHX_ " OS Specific Release: %s\n",
3315 #if defined(LOCAL_PATCH_COUNT)
3316 if (LOCAL_PATCH_COUNT > 0)
3317 PerlIO_printf(PerlIO_stdout(),
3318 "\n(with %d registered patch%s, "
3319 "see perl -V for more detail)",
3321 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
3324 PerlIO_printf(PerlIO_stdout(),
3325 "\n\nCopyright 1987-2011, Larry Wall\n");
3327 PerlIO_printf(PerlIO_stdout(),
3328 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
3331 PerlIO_printf(PerlIO_stdout(),
3332 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3333 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
3336 PerlIO_printf(PerlIO_stdout(),
3337 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
3338 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
3341 PerlIO_printf(PerlIO_stdout(),
3342 "atariST series port, ++jrb bammi@cadence.com\n");
3345 PerlIO_printf(PerlIO_stdout(),
3346 "BeOS port Copyright Tom Spindler, 1997-1999\n");
3349 PerlIO_printf(PerlIO_stdout(),
3350 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n");
3353 PerlIO_printf(PerlIO_stdout(),
3354 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
3357 PerlIO_printf(PerlIO_stdout(),
3358 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
3361 PerlIO_printf(PerlIO_stdout(),
3362 "VM/ESA port by Neale Ferguson, 1998-1999\n");
3365 PerlIO_printf(PerlIO_stdout(),
3366 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
3369 PerlIO_printf(PerlIO_stdout(),
3370 "EPOC port by Olaf Flebbe, 1999-2002\n");
3373 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
3374 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
3377 #ifdef __SYMBIAN32__
3378 PerlIO_printf(PerlIO_stdout(),
3379 "Symbian port by Nokia, 2004-2005\n");
3381 #ifdef BINARY_BUILD_NOTICE
3382 BINARY_BUILD_NOTICE;
3384 PerlIO_printf(PerlIO_stdout(),
3386 Perl may be copied only under the terms of either the Artistic License or the\n\
3387 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
3388 Complete documentation for Perl, including FAQ lists, should be found on\n\
3389 this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
3390 Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
3393 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
3394 PL_dowarn |= G_WARN_ON;
3399 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
3400 if (!specialWARN(PL_compiling.cop_warnings))
3401 PerlMemShared_free(PL_compiling.cop_warnings);
3402 PL_compiling.cop_warnings = pWARN_ALL ;
3406 PL_dowarn = G_WARN_ALL_OFF;
3407 if (!specialWARN(PL_compiling.cop_warnings))
3408 PerlMemShared_free(PL_compiling.cop_warnings);
3409 PL_compiling.cop_warnings = pWARN_NONE ;
3416 if (s[0] == '-') /* Additional switches on #! line. */
3421 #if defined(WIN32) || !defined(PERL_STRICT_CR)
3427 #ifdef ALTERNATE_SHEBANG
3428 case 'S': /* OS/2 needs -S on "extproc" line. */
3432 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
3437 /* compliments of Tom Christiansen */
3439 /* unexec() can be found in the Gnu emacs distribution */
3440 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
3443 Perl_my_unexec(pTHX)
3445 PERL_UNUSED_CONTEXT;
3447 SV * prog = newSVpv(BIN_EXP, 0);
3448 SV * file = newSVpv(PL_origfilename, 0);
3452 sv_catpvs(prog, "/perl");
3453 sv_catpvs(file, ".perldump");
3455 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3456 /* unexec prints msg to stderr in case of failure */
3457 PerlProc_exit(status);
3460 # include <lib$routines.h>
3461 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
3462 # elif defined(WIN32) || defined(__CYGWIN__)
3463 Perl_croak(aTHX_ "dump is not supported");
3465 ABORT(); /* for use with undump */
3470 /* initialize curinterp */
3476 # define PERLVAR(var,type)
3477 # define PERLVARA(var,n,type)
3478 # if defined(PERL_IMPLICIT_CONTEXT)
3479 # define PERLVARI(var,type,init) aTHX->var = init;
3480 # define PERLVARIC(var,type,init) aTHX->var = init;
3482 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
3483 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
3485 # include "intrpvar.h"
3491 # define PERLVAR(var,type)
3492 # define PERLVARA(var,n,type)
3493 # define PERLVARI(var,type,init) PL_##var = init;
3494 # define PERLVARIC(var,type,init) PL_##var = init;
3495 # include "intrpvar.h"
3502 /* As these are inside a structure, PERLVARI isn't capable of initialising
3504 PL_reg_oldcurpm = PL_reg_curpm = NULL;
3505 PL_reg_poscache = PL_reg_starttry = NULL;
3509 S_init_main_stash(pTHX)
3514 PL_curstash = PL_defstash = newHV();
3515 /* We know that the string "main" will be in the global shared string
3516 table, so it's a small saving to use it rather than allocate another
3518 PL_curstname = newSVpvs_share("main");
3519 gv = gv_fetchpvs("main::", GV_ADD|GV_NOTQUAL, SVt_PVHV);
3520 /* If we hadn't caused another reference to "main" to be in the shared
3521 string table above, then it would be worth reordering these two,
3522 because otherwise all we do is delete "main" from it as a consequence
3523 of the SvREFCNT_dec, only to add it again with hv_name_set */
3524 SvREFCNT_dec(GvHV(gv));
3525 hv_name_set(PL_defstash, "main", 4, 0);
3526 GvHV(gv) = MUTABLE_HV(SvREFCNT_inc_simple(PL_defstash));
3528 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpvs("INC", GV_ADD|GV_NOTQUAL,
3530 SvREFCNT_inc_simple_void(PL_incgv); /* Don't allow it to be freed */
3531 GvMULTI_on(PL_incgv);
3532 PL_hintgv = gv_fetchpvs("\010", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^H */
3533 GvMULTI_on(PL_hintgv);
3534 PL_defgv = gv_fetchpvs("_", GV_ADD|GV_NOTQUAL, SVt_PVAV);
3535 SvREFCNT_inc_simple_void(PL_defgv);
3536 PL_errgv = gv_HVadd(gv_fetchpvs("@", GV_ADD|GV_NOTQUAL, SVt_PV));
3537 SvREFCNT_inc_simple_void(PL_errgv);
3538 GvMULTI_on(PL_errgv);
3539 PL_replgv = gv_fetchpvs("\022", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^R */
3540 GvMULTI_on(PL_replgv);
3541 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
3542 #ifdef PERL_DONT_CREATE_GVSV
3545 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
3547 PL_curstash = PL_defstash;
3548 CopSTASH_set(&PL_compiling, PL_defstash);
3549 PL_debstash = GvHV(gv_fetchpvs("DB::", GV_ADDMULTI, SVt_PVHV));
3550 PL_globalstash = GvHV(gv_fetchpvs("CORE::GLOBAL::", GV_ADDMULTI,
3552 /* We must init $/ before switches are processed. */
3553 sv_setpvs(get_sv("/", GV_ADD), "\n");
3557 S_open_script(pTHX_ const char *scriptname, bool dosearch,
3558 bool *suidscript, PerlIO **rsfpp)
3563 PERL_ARGS_ASSERT_OPEN_SCRIPT;
3566 PL_origfilename = savepvs("-e");
3569 /* if find_script() returns, it returns a malloc()-ed value */
3570 scriptname = PL_origfilename = find_script(scriptname, dosearch, NULL, 1);
3572 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
3573 const char *s = scriptname + 8;
3579 * Tell apart "normal" usage of fdscript, e.g.
3580 * with bash on FreeBSD:
3581 * perl <( echo '#!perl -DA'; echo 'print "$0\n"')
3582 * from usage in suidperl.
3583 * Does any "normal" usage leave garbage after the number???
3584 * Is it a mistake to use a similar /dev/fd/ construct for
3589 * Be supersafe and do some sanity-checks.
3590 * Still, can we be sure we got the right thing?
3593 Perl_croak(aTHX_ "Wrong syntax (suid) fd script name \"%s\"\n", s);
3596 Perl_croak(aTHX_ "Missing (suid) fd script name\n");
3598 scriptname = savepv(s + 1);
3599 Safefree(PL_origfilename);
3600 PL_origfilename = (char *)scriptname;
3605 CopFILE_free(PL_curcop);
3606 CopFILE_set(PL_curcop, PL_origfilename);
3607 if (*PL_origfilename == '-' && PL_origfilename[1] == '\0')
3608 scriptname = (char *)"";
3609 if (fdscript >= 0) {
3610 *rsfpp = PerlIO_fdopen(fdscript,PERL_SCRIPT_MODE);
3611 # if defined(HAS_FCNTL) && defined(F_SETFD)
3613 /* ensure close-on-exec */
3614 fcntl(PerlIO_fileno(*rsfpp),F_SETFD,1);
3617 else if (!*scriptname) {
3618 forbid_setid(0, *suidscript);
3619 *rsfpp = PerlIO_stdin();
3622 #ifdef FAKE_BIT_BUCKET
3623 /* This hack allows one not to have /dev/null (or BIT_BUCKET as it
3624 * is called) and still have the "-e" work. (Believe it or not,
3625 * a /dev/null is required for the "-e" to work because source
3626 * filter magic is used to implement it. ) This is *not* a general
3627 * replacement for a /dev/null. What we do here is create a temp
3628 * file (an empty file), open up that as the script, and then
3629 * immediately close and unlink it. Close enough for jazz. */
3630 #define FAKE_BIT_BUCKET_PREFIX "/tmp/perlnull-"
3631 #define FAKE_BIT_BUCKET_SUFFIX "XXXXXXXX"
3632 #define FAKE_BIT_BUCKET_TEMPLATE FAKE_BIT_BUCKET_PREFIX FAKE_BIT_BUCKET_SUFFIX
3633 char tmpname[sizeof(FAKE_BIT_BUCKET_TEMPLATE)] = {
3634 FAKE_BIT_BUCKET_TEMPLATE
3636 const char * const err = "Failed to create a fake bit bucket";
3637 if (strEQ(scriptname, BIT_BUCKET)) {
3638 #ifdef HAS_MKSTEMP /* Hopefully mkstemp() is safe here. */
3639 int tmpfd = mkstemp(tmpname);
3641 scriptname = tmpname;
3644 Perl_croak(aTHX_ err);
3647 scriptname = mktemp(tmpname);
3649 Perl_croak(aTHX_ err);
3654 *rsfpp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
3655 #ifdef FAKE_BIT_BUCKET
3656 if (memEQ(scriptname, FAKE_BIT_BUCKET_PREFIX,
3657 sizeof(FAKE_BIT_BUCKET_PREFIX) - 1)
3658 && strlen(scriptname) == sizeof(tmpname) - 1) {
3661 scriptname = BIT_BUCKET;
3663 # if defined(HAS_FCNTL) && defined(F_SETFD)
3665 /* ensure close-on-exec */
3666 fcntl(PerlIO_fileno(*rsfpp),F_SETFD,1);
3670 /* PSz 16 Sep 03 Keep neat error message */
3672 Perl_croak(aTHX_ "Can't open "BIT_BUCKET": %s\n", Strerror(errno));
3674 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3675 CopFILE(PL_curcop), Strerror(errno));
3681 * I_SYSSTATVFS HAS_FSTATVFS
3683 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
3684 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
3685 * here so that metaconfig picks them up. */
3688 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
3689 /* Don't even need this function. */
3692 S_validate_suid(pTHX_ PerlIO *rsfp)
3694 PERL_ARGS_ASSERT_VALIDATE_SUID;
3696 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
3699 PerlLIO_fstat(PerlIO_fileno(rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3700 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3702 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3705 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3706 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3707 /* not set-id, must be wrapped */
3710 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3713 S_find_beginning(pTHX_ SV* linestr_sv, PerlIO *rsfp)
3717 register const char *s2;
3719 PERL_ARGS_ASSERT_FIND_BEGINNING;
3721 /* skip forward in input to the real script? */
3724 if ((s = sv_gets(linestr_sv, rsfp, 0)) == NULL)
3725 Perl_croak(aTHX_ "No Perl script found in input\n");
3727 } while (!(*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))));
3728 PerlIO_ungetc(rsfp, '\n'); /* to keep line count right */
3729 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3731 while (*s == ' ' || *s == '\t') s++;
3733 while (isDIGIT(s2[-1]) || s2[-1] == '-' || s2[-1] == '.'
3734 || s2[-1] == '_') s2--;
3735 if (strnEQ(s2-4,"perl",4))
3736 while ((s = moreswitches(s)))
3746 PL_uid = PerlProc_getuid();
3747 PL_euid = PerlProc_geteuid();
3748 PL_gid = PerlProc_getgid();
3749 PL_egid = PerlProc_getegid();
3751 PL_uid |= PL_gid << 16;
3752 PL_euid |= PL_egid << 16;
3754 /* Should not happen: */
3755 CHECK_MALLOC_TAINT(PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3756 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3759 * Should go by suidscript, not uid!=euid: why disallow
3760 * system("ls") in scripts run from setuid things?
3761 * Or, is this run before we check arguments and set suidscript?
3762 * What about SETUID_SCRIPTS_ARE_SECURE_NOW: could we use fdscript then?
3763 * (We never have suidscript, can we be sure to have fdscript?)
3764 * Or must then go by UID checks? See comments in forbid_setid also.
3768 /* This is used very early in the lifetime of the program,
3769 * before even the options are parsed, so PL_tainting has
3770 * not been initialized properly. */
3772 Perl_doing_taint(int argc, char *argv[], char *envp[])
3774 #ifndef PERL_IMPLICIT_SYS
3775 /* If we have PERL_IMPLICIT_SYS we can't call getuid() et alia
3776 * before we have an interpreter-- and the whole point of this
3777 * function is to be called at such an early stage. If you are on
3778 * a system with PERL_IMPLICIT_SYS but you do have a concept of
3779 * "tainted because running with altered effective ids', you'll
3780 * have to add your own checks somewhere in here. The two most
3781 * known samples of 'implicitness' are Win32 and NetWare, neither
3782 * of which has much of concept of 'uids'. */
3783 int uid = PerlProc_getuid();
3784 int euid = PerlProc_geteuid();
3785 int gid = PerlProc_getgid();
3786 int egid = PerlProc_getegid();
3793 if (uid && (euid != uid || egid != gid))
3795 #endif /* !PERL_IMPLICIT_SYS */
3796 /* This is a really primitive check; environment gets ignored only
3797 * if -T are the first chars together; otherwise one gets
3798 * "Too late" message. */
3799 if ( argc > 1 && argv[1][0] == '-'
3800 && (argv[1][1] == 't' || argv[1][1] == 'T') )
3805 /* Passing the flag as a single char rather than a string is a slight space
3806 optimisation. The only message that isn't /^-.$/ is
3807 "program input from stdin", which is substituted in place of '\0', which
3808 could never be a command line flag. */
3810 S_forbid_setid(pTHX_ const char flag, const bool suidscript) /* g */
3813 char string[3] = "-x";
3814 const char *message = "program input from stdin";
3821 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
3822 if (PL_euid != PL_uid)
3823 Perl_croak(aTHX_ "No %s allowed while running setuid", message);
3824 if (PL_egid != PL_gid)
3825 Perl_croak(aTHX_ "No %s allowed while running setgid", message);
3826 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3828 Perl_croak(aTHX_ "No %s allowed with (suid) fdscript", message);
3832 Perl_init_dbargs(pTHX)
3834 AV *const args = PL_dbargs = GvAV(gv_AVadd((gv_fetchpvs("DB::args",
3839 /* Someone has already created it.
3840 It might have entries, and if we just turn off AvREAL(), they will
3841 "leak" until global destruction. */
3844 AvREAL_off(PL_dbargs); /* XXX should be REIFY (see av.h) */
3848 Perl_init_debugger(pTHX)
3851 HV * const ostash = PL_curstash;
3853 PL_curstash = PL_debstash;
3855 Perl_init_dbargs(aTHX);
3856 PL_DBgv = gv_fetchpvs("DB::DB", GV_ADDMULTI, SVt_PVGV);
3857 PL_DBline = gv_fetchpvs("DB::dbline", GV_ADDMULTI, SVt_PVAV);
3858 PL_DBsub = gv_HVadd(gv_fetchpvs("DB::sub", GV_ADDMULTI, SVt_PVHV));
3859 PL_DBsingle = GvSV((gv_fetchpvs("DB::single", GV_ADDMULTI, SVt_PV)));
3860 if (!SvIOK(PL_DBsingle))
3861 sv_setiv(PL_DBsingle, 0);
3862 PL_DBtrace = GvSV((gv_fetchpvs("DB::trace", GV_ADDMULTI, SVt_PV)));
3863 if (!SvIOK(PL_DBtrace))
3864 sv_setiv(PL_DBtrace, 0);
3865 PL_DBsignal = GvSV((gv_fetchpvs("DB::signal", GV_ADDMULTI, SVt_PV)));
3866 if (!SvIOK(PL_DBsignal))
3867 sv_setiv(PL_DBsignal, 0);
3868 PL_curstash = ostash;
3871 #ifndef STRESS_REALLOC
3872 #define REASONABLE(size) (size)
3874 #define REASONABLE(size) (1) /* unreasonable */
3878 Perl_init_stacks(pTHX)
3881 /* start with 128-item stack and 8K cxstack */
3882 PL_curstackinfo = new_stackinfo(REASONABLE(128),
3883 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3884 PL_curstackinfo->si_type = PERLSI_MAIN;
3885 PL_curstack = PL_curstackinfo->si_stack;
3886 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
3888 PL_stack_base = AvARRAY(PL_curstack);
3889 PL_stack_sp = PL_stack_base;
3890 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
3892 Newx(PL_tmps_stack,REASONABLE(128),SV*);
3895 PL_tmps_max = REASONABLE(128);
3897 Newx(PL_markstack,REASONABLE(32),I32);
3898 PL_markstack_ptr = PL_markstack;
3899 PL_markstack_max = PL_markstack + REASONABLE(32);
3903 Newx(PL_scopestack,REASONABLE(32),I32);
3905 Newx(PL_scopestack_name,REASONABLE(32),const char*);
3907 PL_scopestack_ix = 0;
3908 PL_scopestack_max = REASONABLE(32);
3910 Newx(PL_savestack,REASONABLE(128),ANY);
3911 PL_savestack_ix = 0;
3912 PL_savestack_max = REASONABLE(128);
3921 while (PL_curstackinfo->si_next)
3922 PL_curstackinfo = PL_curstackinfo->si_next;
3923 while (PL_curstackinfo) {
3924 PERL_SI *p = PL_curstackinfo->si_prev;
3925 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3926 Safefree(PL_curstackinfo->si_cxstack);
3927 Safefree(PL_curstackinfo);
3928 PL_curstackinfo = p;
3930 Safefree(PL_tmps_stack);
3931 Safefree(PL_markstack);
3932 Safefree(PL_scopestack);
3934 Safefree(PL_scopestack_name);
3936 Safefree(PL_savestack);
3940 Perl_populate_isa(pTHX_ const char *name, STRLEN len, ...)
3942 GV *const gv = gv_fetchpvn(name, len, GV_ADD | GV_ADDMULTI, SVt_PVAV);
3943 AV *const isa = GvAVn(gv);
3946 PERL_ARGS_ASSERT_POPULATE_ISA;
3948 if(AvFILLp(isa) != -1)
3951 /* NOTE: No support for tied ISA */
3953 va_start(args, len);
3955 const char *const parent = va_arg(args, const char*);
3960 parent_len = va_arg(args, size_t);
3962 /* Arguments are supplied with a trailing :: */
3963 assert(parent_len > 2);
3964 assert(parent[parent_len - 1] == ':');
3965 assert(parent[parent_len - 2] == ':');
3966 av_push(isa, newSVpvn(parent, parent_len - 2));
3967 (void) gv_fetchpvn(parent, parent_len, GV_ADD, SVt_PVGV);
3974 S_init_predump_symbols(pTHX)
3980 sv_setpvs(get_sv("\"", GV_ADD), " ");
3981 PL_ofsgv = (GV*)SvREFCNT_inc(gv_fetchpvs(",", GV_ADD|GV_NOTQUAL, SVt_PV));
3984 /* Historically, PVIOs were blessed into IO::Handle, unless
3985 FileHandle was loaded, in which case they were blessed into
3986 that. Action at a distance.
3987 However, if we simply bless into IO::Handle, we break code
3988 that assumes that PVIOs will have (among others) a seek
3989 method. IO::File inherits from IO::Handle and IO::Seekable,
3990 and provides the needed methods. But if we simply bless into
3991 it, then we break code that assumed that by loading
3992 IO::Handle, *it* would work.
3993 So a compromise is to set up the correct @IO::File::ISA,
3994 so that code that does C<use IO::Handle>; will still work.
3997 Perl_populate_isa(aTHX_ STR_WITH_LEN("IO::File::ISA"),
3998 STR_WITH_LEN("IO::Handle::"),
3999 STR_WITH_LEN("IO::Seekable::"),
4000 STR_WITH_LEN("Exporter::"),
4003 PL_stdingv = gv_fetchpvs("STDIN", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4004 GvMULTI_on(PL_stdingv);
4005 io = GvIOp(PL_stdingv);
4006 IoTYPE(io) = IoTYPE_RDONLY;
4007 IoIFP(io) = PerlIO_stdin();
4008 tmpgv = gv_fetchpvs("stdin", GV_ADD|GV_NOTQUAL, SVt_PV);
4010 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4012 tmpgv = gv_fetchpvs("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4015 IoTYPE(io) = IoTYPE_WRONLY;
4016 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
4018 tmpgv = gv_fetchpvs("stdout", GV_ADD|GV_NOTQUAL, SVt_PV);
4020 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4022 PL_stderrgv = gv_fetchpvs("STDERR", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4023 GvMULTI_on(PL_stderrgv);
4024 io = GvIOp(PL_stderrgv);
4025 IoTYPE(io) = IoTYPE_WRONLY;
4026 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
4027 tmpgv = gv_fetchpvs("stderr", GV_ADD|GV_NOTQUAL, SVt_PV);
4029 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4031 PL_statname = newSV(0); /* last filename we did stat on */
4035 Perl_init_argv_symbols(pTHX_ register int argc, register char **argv)
4039 PERL_ARGS_ASSERT_INIT_ARGV_SYMBOLS;
4041 argc--,argv++; /* skip name of script */
4042 if (PL_doswitches) {
4043 for (; argc > 0 && **argv == '-'; argc--,argv++) {
4047 if (argv[0][1] == '-' && !argv[0][2]) {
4051 if ((s = strchr(argv[0], '='))) {
4052 const char *const start_name = argv[0] + 1;
4053 sv_setpv(GvSV(gv_fetchpvn_flags(start_name, s - start_name,
4054 TRUE, SVt_PV)), s + 1);
4057 sv_setiv(GvSV(gv_fetchpv(argv[0]+1, GV_ADD, SVt_PV)),1);
4060 if ((PL_argvgv = gv_fetchpvs("ARGV", GV_ADD|GV_NOTQUAL, SVt_PVAV))) {
4061 GvMULTI_on(PL_argvgv);
4062 (void)gv_AVadd(PL_argvgv);
4063 av_clear(GvAVn(PL_argvgv));
4064 for (; argc > 0; argc--,argv++) {
4065 SV * const sv = newSVpv(argv[0],0);
4066 av_push(GvAVn(PL_argvgv),sv);
4067 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
4068 if (PL_unicode & PERL_UNICODE_ARGV_FLAG)
4071 if (PL_unicode & PERL_UNICODE_WIDESYSCALLS_FLAG) /* Sarathy? */
4072 (void)sv_utf8_decode(sv);
4078 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
4083 PERL_ARGS_ASSERT_INIT_POSTDUMP_SYMBOLS;
4085 PL_toptarget = newSV_type(SVt_PVFM);
4086 sv_setpvs(PL_toptarget, "");
4087 PL_bodytarget = newSV_type(SVt_PVFM);
4088 sv_setpvs(PL_bodytarget, "");
4089 PL_formtarget = PL_bodytarget;
4093 init_argv_symbols(argc,argv);
4095 if ((tmpgv = gv_fetchpvs("0", GV_ADD|GV_NOTQUAL, SVt_PV))) {
4096 sv_setpv(GvSV(tmpgv),PL_origfilename);
4098 if ((PL_envgv = gv_fetchpvs("ENV", GV_ADD|GV_NOTQUAL, SVt_PVHV))) {
4100 bool env_is_not_environ;
4101 GvMULTI_on(PL_envgv);
4102 hv = GvHVn(PL_envgv);
4103 hv_magic(hv, NULL, PERL_MAGIC_env);
4105 #ifdef USE_ENVIRON_ARRAY
4106 /* Note that if the supplied env parameter is actually a copy
4107 of the global environ then it may now point to free'd memory
4108 if the environment has been modified since. To avoid this
4109 problem we treat env==NULL as meaning 'use the default'
4113 env_is_not_environ = env != environ;
4114 if (env_is_not_environ
4115 # ifdef USE_ITHREADS
4116 && PL_curinterp == aTHX
4125 for (; *env; env++) {
4128 if (!(s = strchr(old_var,'=')) || s == old_var)
4131 #if defined(MSDOS) && !defined(DJGPP)
4133 (void)strupr(old_var);
4136 sv = newSVpv(s+1, 0);
4137 (void)hv_store(hv, old_var, s - old_var, sv, 0);
4138 if (env_is_not_environ)
4142 #endif /* USE_ENVIRON_ARRAY */
4143 #endif /* !PERL_MICRO */
4146 if ((tmpgv = gv_fetchpvs("$", GV_ADD|GV_NOTQUAL, SVt_PV))) {
4147 SvREADONLY_off(GvSV(tmpgv));
4148 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
4149 SvREADONLY_on(GvSV(tmpgv));
4151 #ifdef THREADS_HAVE_PIDS
4152 PL_ppid = (IV)getppid();
4155 /* touch @F array to prevent spurious warnings 20020415 MJD */
4157 (void) get_av("main::F", GV_ADD | GV_ADDMULTI);
4162 S_init_perllib(pTHX)
4166 const char *perl5lib = NULL;
4169 #if defined(WIN32) && !defined(PERL_IS_MINIPERL)
4175 perl5lib = PerlEnv_getenv("PERL5LIB");
4177 * It isn't possible to delete an environment variable with
4178 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4179 * case we treat PERL5LIB as undefined if it has a zero-length value.
4181 #if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
4182 if (perl5lib && *perl5lib != '\0')
4186 incpush_use_sep(perl5lib, 0, INCPUSH_ADD_SUB_DIRS);
4188 s = PerlEnv_getenv("PERLLIB");
4190 incpush_use_sep(s, 0, 0);
4193 /* Treat PERL5?LIB as a possible search list logical name -- the
4194 * "natural" VMS idiom for a Unix path string. We allow each
4195 * element to be a set of |-separated directories for compatibility.
4199 if (my_trnlnm("PERL5LIB",buf,0))
4201 incpush_use_sep(buf, 0, INCPUSH_ADD_SUB_DIRS);
4202 } while (my_trnlnm("PERL5LIB",buf,++idx));
4204 while (my_trnlnm("PERLLIB",buf,idx++))
4205 incpush_use_sep(buf, 0, 0);
4210 #ifndef PERL_IS_MINIPERL
4211 /* miniperl gets just -I..., the split of $ENV{PERL5LIB}, and "." in @INC
4212 (and not the architecture specific directories from $ENV{PERL5LIB}) */
4214 /* Use the ~-expanded versions of APPLLIB (undocumented),
4215 SITEARCH, SITELIB, VENDORARCH, VENDORLIB, ARCHLIB and PRIVLIB
4218 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP),
4219 INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4223 /* sitearch is always relative to sitelib on Windows for
4224 * DLL-based path intuition to work correctly */
4225 # if !defined(WIN32)
4226 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITEARCH_EXP),
4227 INCPUSH_CAN_RELOCATE);
4233 /* this picks up sitearch as well */
4234 s = win32_get_sitelib(PERL_FS_VERSION, &len);
4236 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4238 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_EXP), INCPUSH_CAN_RELOCATE);
4242 #ifdef PERL_VENDORARCH_EXP
4243 /* vendorarch is always relative to vendorlib on Windows for
4244 * DLL-based path intuition to work correctly */
4245 # if !defined(WIN32)
4246 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORARCH_EXP),
4247 INCPUSH_CAN_RELOCATE);
4251 #ifdef PERL_VENDORLIB_EXP
4253 /* this picks up vendorarch as well */
4254 s = win32_get_vendorlib(PERL_FS_VERSION, &len);
4256 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4258 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_EXP),
4259 INCPUSH_CAN_RELOCATE);
4264 S_incpush_use_sep(aTHX_ STR_WITH_LEN(ARCHLIB_EXP), INCPUSH_CAN_RELOCATE);
4268 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
4272 s = win32_get_privlib(PERL_FS_VERSION, &len);
4274 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4277 S_incpush_use_sep(aTHX_ PRIVLIB_EXP, 0, INCPUSH_CAN_RELOCATE);
4279 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PRIVLIB_EXP), INCPUSH_CAN_RELOCATE);
4283 #ifdef PERL_OTHERLIBDIRS
4284 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS),
4285 INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_NOT_BASEDIR
4286 |INCPUSH_CAN_RELOCATE);
4292 * It isn't possible to delete an environment variable with
4293 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4294 * case we treat PERL5LIB as undefined if it has a zero-length value.
4296 #if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
4297 if (perl5lib && *perl5lib != '\0')
4301 incpush_use_sep(perl5lib, 0,
4302 INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
4304 /* Treat PERL5?LIB as a possible search list logical name -- the
4305 * "natural" VMS idiom for a Unix path string. We allow each
4306 * element to be a set of |-separated directories for compatibility.
4310 if (my_trnlnm("PERL5LIB",buf,0))
4312 incpush_use_sep(buf, 0,
4313 INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
4314 } while (my_trnlnm("PERL5LIB",buf,++idx));
4318 /* Use the ~-expanded versions of APPLLIB (undocumented),
4319 SITELIB and VENDORLIB for older versions
4322 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP), INCPUSH_ADD_OLD_VERS
4323 |INCPUSH_NOT_BASEDIR|INCPUSH_CAN_RELOCATE);
4326 #if defined(SITELIB_STEM) && defined(PERL_INC_VERSION_LIST)
4327 /* Search for version-specific dirs below here */
4328 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_STEM),
4329 INCPUSH_ADD_OLD_VERS|INCPUSH_CAN_RELOCATE);
4333 #if defined(PERL_VENDORLIB_STEM) && defined(PERL_INC_VERSION_LIST)
4334 /* Search for version-specific dirs below here */
4335 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_STEM),
4336 INCPUSH_ADD_OLD_VERS|INCPUSH_CAN_RELOCATE);
4339 #ifdef PERL_OTHERLIBDIRS
4340 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS),
4341 INCPUSH_ADD_OLD_VERS|INCPUSH_ADD_ARCHONLY_SUB_DIRS
4342 |INCPUSH_CAN_RELOCATE);
4344 #endif /* !PERL_IS_MINIPERL */
4347 S_incpush(aTHX_ STR_WITH_LEN("."), 0);
4350 #if defined(DOSISH) || defined(EPOC) || defined(__SYMBIAN32__)
4351 # define PERLLIB_SEP ';'
4354 # define PERLLIB_SEP '|'
4356 # define PERLLIB_SEP ':'
4359 #ifndef PERLLIB_MANGLE
4360 # define PERLLIB_MANGLE(s,n) (s)
4363 #ifndef PERL_IS_MINIPERL
4364 /* Push a directory onto @INC if it exists.
4365 Generate a new SV if we do this, to save needing to copy the SV we push
4368 S_incpush_if_exists(pTHX_ AV *const av, SV *dir, SV *const stem)
4373 PERL_ARGS_ASSERT_INCPUSH_IF_EXISTS;
4375 if (PerlLIO_stat(SvPVX_const(dir), &tmpstatbuf) >= 0 &&
4376 S_ISDIR(tmpstatbuf.st_mode)) {
4378 dir = newSVsv(stem);
4380 /* Truncate dir back to stem. */
4381 SvCUR_set(dir, SvCUR(stem));
4388 S_incpush(pTHX_ const char *const dir, STRLEN len, U32 flags)
4391 #ifndef PERL_IS_MINIPERL
4392 const U8 using_sub_dirs
4393 = (U8)flags & (INCPUSH_ADD_VERSIONED_SUB_DIRS
4394 |INCPUSH_ADD_ARCHONLY_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
4395 const U8 add_versioned_sub_dirs
4396 = (U8)flags & INCPUSH_ADD_VERSIONED_SUB_DIRS;
4397 const U8 add_archonly_sub_dirs
4398 = (U8)flags & INCPUSH_ADD_ARCHONLY_SUB_DIRS;
4399 #ifdef PERL_INC_VERSION_LIST
4400 const U8 addoldvers = (U8)flags & INCPUSH_ADD_OLD_VERS;
4403 const U8 canrelocate = (U8)flags & INCPUSH_CAN_RELOCATE;
4404 const U8 unshift = (U8)flags & INCPUSH_UNSHIFT;
4405 const U8 push_basedir = (flags & INCPUSH_NOT_BASEDIR) ? 0 : 1;
4406 AV *const inc = GvAVn(PL_incgv);
4408 PERL_ARGS_ASSERT_INCPUSH;
4411 /* Could remove this vestigial extra block, if we don't mind a lot of
4412 re-indenting diff noise. */
4415 /* Change 20189146be79a0596543441fa369c6bf7f85103f, to fix RT#6665,
4416 arranged to unshift #! line -I onto the front of @INC. However,
4417 -I can add version and architecture specific libraries, and they
4418 need to go first. The old code assumed that it was always
4419 pushing. Hence to make it work, need to push the architecture
4420 (etc) libraries onto a temporary array, then "unshift" that onto
4421 the front of @INC. */
4422 #ifndef PERL_IS_MINIPERL
4423 AV *const av = (using_sub_dirs) ? (unshift ? newAV() : inc) : NULL;
4427 /* I am not convinced that this is valid when PERLLIB_MANGLE is
4428 defined to so something (in os2/os2.c), but the code has been
4429 this way, ignoring any possible changed of length, since
4430 760ac839baf413929cd31cc32ffd6dba6b781a81 (5.003_02) so I'll leave
4432 libdir = newSVpvn(PERLLIB_MANGLE(dir, len), len);
4434 libdir = newSVpv(PERLLIB_MANGLE(dir, 0), 0);
4441 if ((unix = tounixspec_ts(SvPV(libdir,len),NULL)) != NULL) {
4443 while (unix[len-1] == '/') len--; /* Cosmetic */
4444 sv_usepvn(libdir,unix,len);
4447 PerlIO_printf(Perl_error_log,
4448 "Failed to unixify @INC element \"%s\"\n",
4452 /* Do the if() outside the #ifdef to avoid warnings about an unused
4455 #ifdef PERL_RELOCATABLE_INC
4457 * Relocatable include entries are marked with a leading .../
4460 * 0: Remove that leading ".../"
4461 * 1: Remove trailing executable name (anything after the last '/')
4462 * from the perl path to give a perl prefix
4464 * While the @INC element starts "../" and the prefix ends with a real
4465 * directory (ie not . or ..) chop that real directory off the prefix
4466 * and the leading "../" from the @INC element. ie a logical "../"
4468 * Finally concatenate the prefix and the remainder of the @INC element
4469 * The intent is that /usr/local/bin/perl and .../../lib/perl5
4470 * generates /usr/local/lib/perl5
4472 const char *libpath = SvPVX(libdir);
4473 STRLEN libpath_len = SvCUR(libdir);
4474 if (libpath_len >= 4 && memEQ (libpath, ".../", 4)) {
4476 SV * const caret_X = get_sv("\030", 0);
4477 /* Going to use the SV just as a scratch buffer holding a C
4483 /* $^X is *the* source of taint if tainting is on, hence
4484 SvPOK() won't be true. */
4486 assert(SvPOKp(caret_X));
4487 prefix_sv = newSVpvn_flags(SvPVX(caret_X), SvCUR(caret_X),
4489 /* Firstly take off the leading .../
4490 If all else fail we'll do the paths relative to the current
4492 sv_chop(libdir, libpath + 4);
4493 /* Don't use SvPV as we're intentionally bypassing taining,
4494 mortal copies that the mg_get of tainting creates, and
4495 corruption that seems to come via the save stack.
4496 I guess that the save stack isn't correctly set up yet. */
4497 libpath = SvPVX(libdir);
4498 libpath_len = SvCUR(libdir);
4500 /* This would work more efficiently with memrchr, but as it's
4501 only a GNU extension we'd need to probe for it and
4502 implement our own. Not hard, but maybe not worth it? */
4504 prefix = SvPVX(prefix_sv);
4505 lastslash = strrchr(prefix, '/');
4507 /* First time in with the *lastslash = '\0' we just wipe off
4508 the trailing /perl from (say) /usr/foo/bin/perl
4512 while ((*lastslash = '\0'), /* Do that, come what may. */
4513 (libpath_len >= 3 && memEQ(libpath, "../", 3)
4514 && (lastslash = strrchr(prefix, '/')))) {
4515 if (lastslash[1] == '\0'
4516 || (lastslash[1] == '.'
4517 && (lastslash[2] == '/' /* ends "/." */
4518 || (lastslash[2] == '/'
4519 && lastslash[3] == '/' /* or "/.." */
4521 /* Prefix ends "/" or "/." or "/..", any of which
4522 are fishy, so don't do any more logical cleanup.
4526 /* Remove leading "../" from path */
4529 /* Next iteration round the loop removes the last
4530 directory name from prefix by writing a '\0' in
4531 the while clause. */
4533 /* prefix has been terminated with a '\0' to the correct
4534 length. libpath points somewhere into the libdir SV.
4535 We need to join the 2 with '/' and drop the result into
4537 tempsv = Perl_newSVpvf(aTHX_ "%s/%s", prefix, libpath);
4538 SvREFCNT_dec(libdir);
4539 /* And this is the new libdir. */
4542 (PL_uid != PL_euid || PL_gid != PL_egid)) {
4543 /* Need to taint relocated paths if running set ID */
4544 SvTAINTED_on(libdir);
4547 SvREFCNT_dec(prefix_sv);
4551 #ifndef PERL_IS_MINIPERL
4553 * BEFORE pushing libdir onto @INC we may first push version- and
4554 * archname-specific sub-directories.
4556 if (using_sub_dirs) {
4558 #ifdef PERL_INC_VERSION_LIST
4559 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
4560 const char * const incverlist[] = { PERL_INC_VERSION_LIST };
4561 const char * const *incver;
4563 subdir = newSVsv(libdir);
4565 if (add_versioned_sub_dirs) {
4566 /* .../version/archname if -d .../version/archname */
4567 sv_catpvs(subdir, "/" PERL_FS_VERSION "/" ARCHNAME);
4568 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4570 /* .../version if -d .../version */
4571 sv_catpvs(subdir, "/" PERL_FS_VERSION);
4572 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4575 #ifdef PERL_INC_VERSION_LIST
4577 for (incver = incverlist; *incver; incver++) {
4578 /* .../xxx if -d .../xxx */
4579 Perl_sv_catpvf(aTHX_ subdir, "/%s", *incver);
4580 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4585 if (add_archonly_sub_dirs) {
4586 /* .../archname if -d .../archname */
4587 sv_catpvs(subdir, "/" ARCHNAME);
4588 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4592 assert (SvREFCNT(subdir) == 1);
4593 SvREFCNT_dec(subdir);
4595 #endif /* !PERL_IS_MINIPERL */
4596 /* finally add this lib directory at the end of @INC */
4598 #ifdef PERL_IS_MINIPERL
4599 const U32 extra = 0;
4601 U32 extra = av_len(av) + 1;
4603 av_unshift(inc, extra + push_basedir);
4605 av_store(inc, extra, libdir);
4606 #ifndef PERL_IS_MINIPERL
4608 /* av owns a reference, av_store() expects to be donated a
4609 reference, and av expects to be sane when it's cleared.
4610 If I wanted to be naughty and wrong, I could peek inside the
4611 implementation of av_clear(), realise that it uses
4612 SvREFCNT_dec() too, so av's array could be a run of NULLs,
4613 and so directly steal from it (with a memcpy() to inc, and
4614 then memset() to NULL them out. But people copy code from the
4615 core expecting it to be best practise, so let's use the API.
4616 Although studious readers will note that I'm not checking any
4618 av_store(inc, extra, SvREFCNT_inc(*av_fetch(av, extra, FALSE)));
4623 else if (push_basedir) {
4624 av_push(inc, libdir);
4627 if (!push_basedir) {
4628 assert (SvREFCNT(libdir) == 1);
4629 SvREFCNT_dec(libdir);
4635 S_incpush_use_sep(pTHX_ const char *p, STRLEN len, U32 flags)
4639 /* This logic has been broken out from S_incpush(). It may be possible to
4642 PERL_ARGS_ASSERT_INCPUSH_USE_SEP;
4644 /* perl compiled with -DPERL_RELOCATABLE_INCPUSH will ignore the len
4645 * argument to incpush_use_sep. This allows creation of relocatable
4646 * Perl distributions that patch the binary at install time. Those
4647 * distributions will have to provide their own relocation tools; this
4648 * is not a feature otherwise supported by core Perl.
4650 #ifndef PERL_RELOCATABLE_INCPUSH
4657 /* Break at all separators */
4658 while ((s = (const char*)memchr(p, PERLLIB_SEP, end - p))) {
4660 /* skip any consecutive separators */
4662 /* Uncomment the next line for PATH semantics */
4663 /* But you'll need to write tests */
4664 /* av_push(GvAVn(PL_incgv), newSVpvs(".")); */
4666 incpush(p, (STRLEN)(s - p), flags);
4671 incpush(p, (STRLEN)(end - p), flags);
4676 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
4680 volatile const line_t oldline = PL_curcop ? CopLINE(PL_curcop) : 0;
4686 PERL_ARGS_ASSERT_CALL_LIST;
4688 while (av_len(paramList) >= 0) {
4689 cv = MUTABLE_CV(av_shift(paramList));
4691 if (paramList == PL_beginav) {
4692 /* save PL_beginav for compiler */
4693 Perl_av_create_and_push(aTHX_ &PL_beginav_save, MUTABLE_SV(cv));
4695 else if (paramList == PL_checkav) {
4696 /* save PL_checkav for compiler */
4697 Perl_av_create_and_push(aTHX_ &PL_checkav_save, MUTABLE_SV(cv));
4699 else if (paramList == PL_unitcheckav) {
4700 /* save PL_unitcheckav for compiler */
4701 Perl_av_create_and_push(aTHX_ &PL_unitcheckav_save, MUTABLE_SV(cv));
4712 PL_madskills |= 16384;
4717 PL_madskills &= ~16384;
4720 (void)SvPV_const(atsv, len);
4722 PL_curcop = &PL_compiling;
4723 CopLINE_set(PL_curcop, oldline);
4724 if (paramList == PL_beginav)
4725 sv_catpvs(atsv, "BEGIN failed--compilation aborted");
4727 Perl_sv_catpvf(aTHX_ atsv,
4728 "%s failed--call queue aborted",
4729 paramList == PL_checkav ? "CHECK"
4730 : paramList == PL_initav ? "INIT"
4731 : paramList == PL_unitcheckav ? "UNITCHECK"
4733 while (PL_scopestack_ix > oldscope)
4736 Perl_croak(aTHX_ "%"SVf"", SVfARG(atsv));
4743 /* my_exit() was called */
4744 while (PL_scopestack_ix > oldscope)
4747 PL_curstash = PL_defstash;
4748 PL_curcop = &PL_compiling;
4749 CopLINE_set(PL_curcop, oldline);
4755 PL_curcop = &PL_compiling;
4756 CopLINE_set(PL_curcop, oldline);
4759 PerlIO_printf(Perl_error_log, "panic: restartop\n");
4768 Perl_my_exit(pTHX_ U32 status)
4779 STATUS_EXIT_SET(status);
4786 Perl_my_failure_exit(pTHX)
4790 /* We have been called to fall on our sword. The desired exit code
4791 * should be already set in STATUS_UNIX, but could be shifted over
4792 * by 8 bits. STATUS_UNIX_EXIT_SET will handle the cases where a
4795 * If an error code has not been set, then force the issue.
4797 if (MY_POSIX_EXIT) {
4799 /* According to the die_exit.t tests, if errno is non-zero */
4800 /* It should be used for the error status. */
4802 if (errno == EVMSERR) {
4803 STATUS_NATIVE = vaxc$errno;
4806 /* According to die_exit.t tests, if the child_exit code is */
4807 /* also zero, then we need to exit with a code of 255 */
4808 if ((errno != 0) && (errno < 256))
4809 STATUS_UNIX_EXIT_SET(errno);
4810 else if (STATUS_UNIX < 255) {
4811 STATUS_UNIX_EXIT_SET(255);
4816 /* The exit code could have been set by $? or vmsish which
4817 * means that it may not have fatal set. So convert
4818 * success/warning codes to fatal with out changing
4819 * the POSIX status code. The severity makes VMS native
4820 * status handling work, while UNIX mode programs use the
4821 * the POSIX exit codes.
4823 if ((STATUS_NATIVE & (STS$K_SEVERE|STS$K_ERROR)) == 0) {
4824 STATUS_NATIVE &= STS$M_COND_ID;
4825 STATUS_NATIVE |= STS$K_ERROR | STS$M_INHIB_MSG;
4829 /* Traditionally Perl on VMS always expects a Fatal Error. */
4830 if (vaxc$errno & 1) {
4832 /* So force success status to failure */
4833 if (STATUS_NATIVE & 1)
4838 STATUS_UNIX = EINTR; /* In case something cares */
4843 STATUS_NATIVE = vaxc$errno; /* Should already be this */
4845 /* Encode the severity code */
4846 severity = STATUS_NATIVE & STS$M_SEVERITY;
4847 STATUS_UNIX = (severity ? severity : 1) << 8;
4849 /* Perl expects this to be a fatal error */
4850 if (severity != STS$K_SEVERE)
4859 STATUS_UNIX_SET(errno);
4861 exitstatus = STATUS_UNIX >> 8;
4862 if (exitstatus & 255)
4863 STATUS_UNIX_SET(exitstatus);
4865 STATUS_UNIX_SET(255);
4872 S_my_exit_jump(pTHX)
4877 SvREFCNT_dec(PL_e_script);
4881 POPSTACK_TO(PL_mainstack);
4889 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen)
4892 const char * const p = SvPVX_const(PL_e_script);
4893 const char *nl = strchr(p, '\n');
4895 PERL_UNUSED_ARG(idx);
4896 PERL_UNUSED_ARG(maxlen);
4898 nl = (nl) ? nl+1 : SvEND(PL_e_script);
4900 filter_del(read_e_script);
4903 sv_catpvn(buf_sv, p, nl-p);
4904 sv_chop(PL_e_script, nl);
4910 * c-indentation-style: bsd
4912 * indent-tabs-mode: t
4915 * ex: set ts=8 sts=4 sw=4 noet: