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_USE_DEVEL
1697 # ifdef PERL_USE_SAFE_PUTENV
1698 " PERL_USE_SAFE_PUTENV"
1700 # ifdef USE_ATTRIBUTES_FOR_PERLIO
1701 " USE_ATTRIBUTES_FOR_PERLIO"
1703 # ifdef USE_FAST_STDIO
1706 # ifdef USE_PERL_ATOF
1709 # ifdef USE_SITECUSTOMIZE
1710 " USE_SITECUSTOMIZE"
1713 PERL_UNUSED_ARG(cv);
1714 PERL_UNUSED_ARG(items);
1716 EXTEND(SP, entries);
1718 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1719 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1720 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1724 PUSHs(Perl_newSVpvn_flags(aTHX_
1725 STR_WITH_LEN("Compiled at " __DATE__ " " __TIME__),
1728 PUSHs(Perl_newSVpvn_flags(aTHX_ STR_WITH_LEN("Compiled on " __DATE__),
1732 PUSHs(&PL_sv_undef);
1735 for (i = 1; i <= local_patch_count; i++) {
1736 /* This will be an undef, if PL_localpatches[i] is NULL. */
1737 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1743 #define INCPUSH_UNSHIFT 0x01
1744 #define INCPUSH_ADD_OLD_VERS 0x02
1745 #define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1746 #define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1747 #define INCPUSH_NOT_BASEDIR 0x10
1748 #define INCPUSH_CAN_RELOCATE 0x20
1749 #define INCPUSH_ADD_SUB_DIRS \
1750 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
1753 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
1757 int argc = PL_origargc;
1758 char **argv = PL_origargv;
1759 const char *scriptname = NULL;
1760 VOL bool dosearch = FALSE;
1762 bool doextract = FALSE;
1763 const char *cddir = NULL;
1764 #ifdef USE_SITECUSTOMIZE
1765 bool minus_f = FALSE;
1767 SV *linestr_sv = newSV_type(SVt_PVIV);
1768 bool add_read_e_script = FALSE;
1770 PL_phase = PERL_PHASE_START;
1772 SvGROW(linestr_sv, 80);
1773 sv_setpvs(linestr_sv,"");
1779 for (argc--,argv++; argc > 0; argc--,argv++) {
1780 if (argv[0][0] != '-' || !argv[0][1])
1786 #ifndef PERL_STRICT_CR
1810 if ((s = moreswitches(s)))
1815 CHECK_MALLOC_TOO_LATE_FOR('t');
1816 if( !PL_tainting ) {
1817 PL_taint_warn = TRUE;
1823 CHECK_MALLOC_TOO_LATE_FOR('T');
1825 PL_taint_warn = FALSE;
1833 forbid_setid('e', FALSE);
1835 PL_e_script = newSVpvs("");
1836 add_read_e_script = TRUE;
1839 sv_catpv(PL_e_script, s);
1841 sv_catpv(PL_e_script, argv[1]);
1845 Perl_croak(aTHX_ "No code specified for -%c", c);
1846 sv_catpvs(PL_e_script, "\n");
1850 #ifdef USE_SITECUSTOMIZE
1856 case 'I': /* -I handled both here and in moreswitches() */
1857 forbid_setid('I', FALSE);
1858 if (!*++s && (s=argv[1]) != NULL) {
1862 STRLEN len = strlen(s);
1863 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
1866 Perl_croak(aTHX_ "No directory specified for -I");
1869 forbid_setid('S', FALSE);
1878 opts_prog = newSVpvs("use Config; Config::_V()");
1882 opts_prog = Perl_newSVpvf(aTHX_
1883 "use Config; Config::config_vars(qw%c%s%c)",
1887 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
1888 /* don't look for script or read stdin */
1889 scriptname = BIT_BUCKET;
1901 if (!*++s || isSPACE(*s)) {
1905 /* catch use of gnu style long options */
1906 if (strEQ(s, "version")) {
1910 if (strEQ(s, "help")) {
1917 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1928 #ifndef SECURE_INTERNAL_GETENV
1931 (s = PerlEnv_getenv("PERL5OPT")))
1935 if (*s == '-' && *(s+1) == 'T') {
1936 CHECK_MALLOC_TOO_LATE_FOR('T');
1938 PL_taint_warn = FALSE;
1941 char *popt_copy = NULL;
1954 if (!strchr("CDIMUdmtwW", *s))
1955 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
1959 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
1960 s = popt_copy + (s - d);
1968 if( !PL_tainting ) {
1969 PL_taint_warn = TRUE;
1980 #if defined(USE_SITECUSTOMIZE)
1982 /* The games with local $! are to avoid setting errno if there is no
1983 sitecustomize script. */
1984 # ifdef PERL_IS_MINIPERL
1985 AV *const inc = GvAV(PL_incgv);
1986 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
1989 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
1991 "BEGIN { do {local $!; -f '%"SVf"/buildcustomize.pl'} && do '%"SVf"/buildcustomize.pl' }", *inc0, *inc0));
1994 /* SITELIB_EXP is a function call on Win32. */
1995 const char *const sitelib = SITELIB_EXP;
1996 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
1998 "BEGIN { do {local $!; -f '%s/sitecustomize.pl'} && do '%s/sitecustomize.pl' }", sitelib, sitelib));
2004 scriptname = argv[0];
2007 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2009 else if (scriptname == NULL) {
2011 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
2017 /* Set $^X early so that it can be used for relocatable paths in @INC */
2018 assert (!PL_tainted);
2020 S_set_caret_X(aTHX);
2025 bool suidscript = FALSE;
2027 open_script(scriptname, dosearch, &suidscript, &rsfp);
2029 validate_suid(validarg, scriptname, fdscript, suidscript,
2033 # if defined(SIGCHLD) || defined(SIGCLD)
2036 # define SIGCHLD SIGCLD
2038 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2039 if (sigstate == (Sighandler_t) SIG_IGN) {
2040 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2041 "Can't ignore signal CHLD, forcing to default");
2042 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2050 /* This will croak if suidscript is true, as -x cannot be used with
2052 forbid_setid('x', suidscript);
2053 /* Hence you can't get here if suidscript is true */
2055 find_beginning(linestr_sv, rsfp);
2056 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2057 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2061 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
2062 CvUNIQUE_on(PL_compcv);
2064 CvPADLIST(PL_compcv) = pad_new(0);
2066 PL_isarev = newHV();
2069 boot_core_UNIVERSAL();
2071 newXS("Internals::V", S_Internals_V, __FILE__);
2074 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
2076 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC) || defined(SYMBIAN)
2082 # ifdef HAS_SOCKS5_INIT
2083 socks5_init(argv[0]);
2089 init_predump_symbols();
2090 /* init_postdump_symbols not currently designed to be called */
2091 /* more than once (ENV isn't cleared first, for example) */
2092 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
2094 init_postdump_symbols(argc,argv,env);
2096 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2097 * or explicitly in some platforms.
2098 * locale.c:Perl_init_i18nl10n() if the environment
2099 * look like the user wants to use UTF-8. */
2100 #if defined(__SYMBIAN32__)
2101 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2103 # ifndef PERL_IS_MINIPERL
2105 /* Requires init_predump_symbols(). */
2106 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
2111 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
2112 * and the default open disciplines. */
2113 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2114 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2116 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2117 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2118 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2120 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2121 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2122 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2124 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2125 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
2126 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2128 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2129 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2132 sv_setpvs(sv, ":utf8\0:utf8");
2134 sv_setpvs(sv, ":utf8\0");
2137 sv_setpvs(sv, "\0:utf8");
2146 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2147 if (strEQ(s, "unsafe"))
2148 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2149 else if (strEQ(s, "safe"))
2150 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2152 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2159 if ((s = PerlEnv_getenv("PERL_XMLDUMP"))) {
2163 PL_xmlfp = PerlIO_stdout();
2165 PL_xmlfp = PerlIO_open(s, "w");
2167 Perl_croak(aTHX_ "Can't open %s", s);
2169 my_setenv("PERL_XMLDUMP", NULL); /* hide from subprocs */
2175 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2176 PL_madskills = atoi(s);
2177 my_setenv("PERL_MADSKILLS", NULL); /* hide from subprocs */
2182 lex_start(linestr_sv, rsfp, 0);
2183 PL_subname = newSVpvs("main");
2185 if (add_read_e_script)
2186 filter_add(read_e_script, NULL);
2188 /* now parse the script */
2190 SETERRNO(0,SS_NORMAL);
2191 if (yyparse(GRAMPROG) || PL_parser->error_count) {
2193 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
2195 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
2199 CopLINE_set(PL_curcop, 0);
2200 PL_curstash = PL_defstash;
2202 SvREFCNT_dec(PL_e_script);
2210 SAVECOPFILE(PL_curcop);
2211 SAVECOPLINE(PL_curcop);
2212 gv_check(PL_defstash);
2221 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2222 dump_mstats("after compilation:");
2227 PL_restartjmpenv = NULL;
2233 =for apidoc perl_run
2235 Tells a Perl interpreter to run. See L<perlembed>.
2248 PERL_ARGS_ASSERT_PERL_RUN;
2249 #ifndef MULTIPLICITY
2250 PERL_UNUSED_ARG(my_perl);
2253 oldscope = PL_scopestack_ix;
2261 cxstack_ix = -1; /* start context stack again */
2263 case 0: /* normal completion */
2267 case 2: /* my_exit() */
2268 while (PL_scopestack_ix > oldscope)
2271 PL_curstash = PL_defstash;
2272 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
2273 PL_endav && !PL_minus_c) {
2274 PL_phase = PERL_PHASE_END;
2275 call_list(oldscope, PL_endav);
2278 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2279 dump_mstats("after execution: ");
2285 POPSTACK_TO(PL_mainstack);
2288 PerlIO_printf(Perl_error_log, "panic: restartop\n");
2299 S_run_body(pTHX_ I32 oldscope)
2302 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
2303 PL_sawampersand ? "Enabling" : "Omitting"));
2305 if (!PL_restartop) {
2309 exit(0); /* less likely to core dump than my_exit(0) */
2313 if (DEBUG_x_TEST || DEBUG_B_TEST)
2314 dump_all_perl(!DEBUG_B_TEST);
2316 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
2320 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
2323 if (PERLDB_SINGLE && PL_DBsingle)
2324 sv_setiv(PL_DBsingle, 1);
2326 PL_phase = PERL_PHASE_INIT;
2327 call_list(oldscope, PL_initav);
2329 #ifdef PERL_DEBUG_READONLY_OPS
2330 Perl_pending_Slabs_to_ro(aTHX);
2336 PL_phase = PERL_PHASE_RUN;
2339 PL_restartjmpenv = NULL;
2340 PL_op = PL_restartop;
2344 else if (PL_main_start) {
2345 CvDEPTH(PL_main_cv) = 1;
2346 PL_op = PL_main_start;
2354 =head1 SV Manipulation Functions
2356 =for apidoc p||get_sv
2358 Returns the SV of the specified Perl scalar. C<flags> are passed to
2359 C<gv_fetchpv>. If C<GV_ADD> is set and the
2360 Perl variable does not exist then it will be created. If C<flags> is zero
2361 and the variable does not exist then NULL is returned.
2367 Perl_get_sv(pTHX_ const char *name, I32 flags)
2371 PERL_ARGS_ASSERT_GET_SV;
2373 gv = gv_fetchpv(name, flags, SVt_PV);
2380 =head1 Array Manipulation Functions
2382 =for apidoc p||get_av
2384 Returns the AV of the specified Perl array. C<flags> are passed to
2385 C<gv_fetchpv>. If C<GV_ADD> is set and the
2386 Perl variable does not exist then it will be created. If C<flags> is zero
2387 and the variable does not exist then NULL is returned.
2393 Perl_get_av(pTHX_ const char *name, I32 flags)
2395 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
2397 PERL_ARGS_ASSERT_GET_AV;
2407 =head1 Hash Manipulation Functions
2409 =for apidoc p||get_hv
2411 Returns the HV of the specified Perl hash. C<flags> are passed to
2412 C<gv_fetchpv>. If C<GV_ADD> is set and the
2413 Perl variable does not exist then it will be created. If C<flags> is zero
2414 and the variable does not exist then NULL is returned.
2420 Perl_get_hv(pTHX_ const char *name, I32 flags)
2422 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
2424 PERL_ARGS_ASSERT_GET_HV;
2434 =head1 CV Manipulation Functions
2436 =for apidoc p||get_cvn_flags
2438 Returns the CV of the specified Perl subroutine. C<flags> are passed to
2439 C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2440 exist then it will be declared (which has the same effect as saying
2441 C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2442 then NULL is returned.
2444 =for apidoc p||get_cv
2446 Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
2452 Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
2454 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
2455 /* XXX this is probably not what they think they're getting.
2456 * It has the same effect as "sub name;", i.e. just a forward
2459 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2461 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
2462 SV *const sv = newSVpvn_flags(name, len, flags & SVf_UTF8);
2463 return newSUB(start_subparse(FALSE, 0),
2464 newSVOP(OP_CONST, 0, sv),
2472 /* Nothing in core calls this now, but we can't replace it with a macro and
2473 move it to mathoms.c as a macro would evaluate name twice. */
2475 Perl_get_cv(pTHX_ const char *name, I32 flags)
2477 PERL_ARGS_ASSERT_GET_CV;
2479 return get_cvn_flags(name, strlen(name), flags);
2482 /* Be sure to refetch the stack pointer after calling these routines. */
2486 =head1 Callback Functions
2488 =for apidoc p||call_argv
2490 Performs a callback to the specified Perl sub. See L<perlcall>.
2496 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
2498 /* See G_* flags in cop.h */
2499 /* null terminated arg list */
2504 PERL_ARGS_ASSERT_CALL_ARGV;
2509 mXPUSHs(newSVpv(*argv,0));
2514 return call_pv(sub_name, flags);
2518 =for apidoc p||call_pv
2520 Performs a callback to the specified Perl sub. See L<perlcall>.
2526 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
2527 /* name of the subroutine */
2528 /* See G_* flags in cop.h */
2530 PERL_ARGS_ASSERT_CALL_PV;
2532 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
2536 =for apidoc p||call_method
2538 Performs a callback to the specified Perl method. The blessed object must
2539 be on the stack. See L<perlcall>.
2545 Perl_call_method(pTHX_ const char *methname, I32 flags)
2546 /* name of the subroutine */
2547 /* See G_* flags in cop.h */
2550 PERL_ARGS_ASSERT_CALL_METHOD;
2552 len = strlen(methname);
2554 /* XXX: sv_2mortal(newSVpvn_share(methname, len)) can be faster */
2555 return call_sv(newSVpvn_flags(methname, len, SVs_TEMP), flags | G_METHOD);
2558 /* May be called with any of a CV, a GV, or an SV containing the name. */
2560 =for apidoc p||call_sv
2562 Performs a callback to the Perl sub whose name is in the SV. See
2569 Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
2570 /* See G_* flags in cop.h */
2573 LOGOP myop; /* fake syntax tree node */
2578 bool oldcatch = CATCH_GET;
2580 OP* const oldop = PL_op;
2583 PERL_ARGS_ASSERT_CALL_SV;
2585 if (flags & G_DISCARD) {
2589 if (!(flags & G_WANT)) {
2590 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2595 Zero(&myop, 1, LOGOP);
2596 myop.op_next = NULL;
2597 if (!(flags & G_NOARGS))
2598 myop.op_flags |= OPf_STACKED;
2599 myop.op_flags |= OP_GIMME_REVERSE(flags);
2603 EXTEND(PL_stack_sp, 1);
2604 *++PL_stack_sp = sv;
2606 oldscope = PL_scopestack_ix;
2608 if (PERLDB_SUB && PL_curstash != PL_debstash
2609 /* Handle first BEGIN of -d. */
2610 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
2611 /* Try harder, since this may have been a sighandler, thus
2612 * curstash may be meaningless. */
2613 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
2614 && !(flags & G_NODEBUG))
2615 PL_op->op_private |= OPpENTERSUB_DB;
2617 if (flags & G_METHOD) {
2618 Zero(&method_op, 1, UNOP);
2619 method_op.op_next = PL_op;
2620 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2621 method_op.op_type = OP_METHOD;
2622 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
2623 myop.op_type = OP_ENTERSUB;
2624 PL_op = (OP*)&method_op;
2627 if (!(flags & G_EVAL)) {
2629 CALL_BODY_SUB((OP*)&myop);
2630 retval = PL_stack_sp - (PL_stack_base + oldmark);
2631 CATCH_SET(oldcatch);
2634 myop.op_other = (OP*)&myop;
2636 create_eval_scope(flags|G_FAKINGEVAL);
2644 CALL_BODY_SUB((OP*)&myop);
2645 retval = PL_stack_sp - (PL_stack_base + oldmark);
2646 if (!(flags & G_KEEPERR)) {
2654 /* my_exit() was called */
2655 PL_curstash = PL_defstash;
2662 PL_restartjmpenv = NULL;
2663 PL_op = PL_restartop;
2667 PL_stack_sp = PL_stack_base + oldmark;
2668 if ((flags & G_WANT) == G_ARRAY)
2672 *++PL_stack_sp = &PL_sv_undef;
2677 if (PL_scopestack_ix > oldscope)
2678 delete_eval_scope();
2682 if (flags & G_DISCARD) {
2683 PL_stack_sp = PL_stack_base + oldmark;
2692 /* Eval a string. The G_EVAL flag is always assumed. */
2695 =for apidoc p||eval_sv
2697 Tells Perl to C<eval> the string in the SV. It supports the same flags
2698 as C<call_sv>, with the obvious exception of G_EVAL. See L<perlcall>.
2704 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
2706 /* See G_* flags in cop.h */
2710 UNOP myop; /* fake syntax tree node */
2711 VOL I32 oldmark = SP - PL_stack_base;
2714 OP* const oldop = PL_op;
2717 PERL_ARGS_ASSERT_EVAL_SV;
2719 if (flags & G_DISCARD) {
2726 Zero(PL_op, 1, UNOP);
2727 EXTEND(PL_stack_sp, 1);
2728 *++PL_stack_sp = sv;
2730 if (!(flags & G_NOARGS))
2731 myop.op_flags = OPf_STACKED;
2732 myop.op_next = NULL;
2733 myop.op_type = OP_ENTEREVAL;
2734 myop.op_flags |= OP_GIMME_REVERSE(flags);
2735 if (flags & G_KEEPERR)
2736 myop.op_flags |= OPf_SPECIAL;
2738 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2739 * before a PUSHEVAL, which corrupts the stack after a croak */
2740 TAINT_PROPER("eval_sv()");
2746 if (PL_op == (OP*)(&myop)) {
2747 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2749 goto fail; /* failed in compilation */
2752 retval = PL_stack_sp - (PL_stack_base + oldmark);
2753 if (!(flags & G_KEEPERR)) {
2761 /* my_exit() was called */
2762 PL_curstash = PL_defstash;
2769 PL_restartjmpenv = NULL;
2770 PL_op = PL_restartop;
2775 PL_stack_sp = PL_stack_base + oldmark;
2776 if ((flags & G_WANT) == G_ARRAY)
2780 *++PL_stack_sp = &PL_sv_undef;
2786 if (flags & G_DISCARD) {
2787 PL_stack_sp = PL_stack_base + oldmark;
2797 =for apidoc p||eval_pv
2799 Tells Perl to C<eval> the given string and return an SV* result.
2805 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
2809 SV* sv = newSVpv(p, 0);
2811 PERL_ARGS_ASSERT_EVAL_PV;
2813 eval_sv(sv, G_SCALAR);
2820 if (croak_on_error && SvTRUE(ERRSV)) {
2821 Perl_croak(aTHX_ "%s", SvPVx_nolen_const(ERRSV));
2827 /* Require a module. */
2830 =head1 Embedding Functions
2832 =for apidoc p||require_pv
2834 Tells Perl to C<require> the file named by the string argument. It is
2835 analogous to the Perl code C<eval "require '$file'">. It's even
2836 implemented that way; consider using load_module instead.
2841 Perl_require_pv(pTHX_ const char *pv)
2847 PERL_ARGS_ASSERT_REQUIRE_PV;
2849 PUSHSTACKi(PERLSI_REQUIRE);
2851 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2852 eval_sv(sv_2mortal(sv), G_DISCARD);
2858 S_usage(pTHX_ const char *name) /* XXX move this out into a module ? */
2860 /* This message really ought to be max 23 lines.
2861 * Removed -h because the user already knows that option. Others? */
2863 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
2864 minimum of 509 character string literals. */
2865 static const char * const usage_msg[] = {
2866 " -0[octal] specify record separator (\\0, if no argument)\n"
2867 " -a autosplit mode with -n or -p (splits $_ into @F)\n"
2868 " -C[number/list] enables the listed Unicode features\n"
2869 " -c check syntax only (runs BEGIN and CHECK blocks)\n"
2870 " -d[:debugger] run program under debugger\n"
2871 " -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
2872 " -e program one line of program (several -e's allowed, omit programfile)\n"
2873 " -E program like -e, but enables all optional features\n"
2874 " -f don't do $sitelib/sitecustomize.pl at startup\n"
2875 " -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
2876 " -i[extension] edit <> files in place (makes backup if extension supplied)\n"
2877 " -Idirectory specify @INC/#include directory (several -I's allowed)\n",
2878 " -l[octal] enable line ending processing, specifies line terminator\n"
2879 " -[mM][-]module execute \"use/no module...\" before executing program\n"
2880 " -n assume \"while (<>) { ... }\" loop around program\n"
2881 " -p assume loop like -n but print line also, like sed\n"
2882 " -s enable rudimentary parsing for switches after programfile\n"
2883 " -S look for programfile using PATH environment variable\n",
2884 " -t enable tainting warnings\n"
2885 " -T enable tainting checks\n"
2886 " -u dump core after parsing program\n"
2887 " -U allow unsafe operations\n"
2888 " -v print version, patchlevel and license\n"
2889 " -V[:variable] print configuration summary (or a single Config.pm variable)\n",
2890 " -w enable many useful warnings\n"
2891 " -W enable all warnings\n"
2892 " -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
2893 " -X disable all warnings\n"
2895 "Run 'perldoc perl' for more help with Perl.\n\n",
2898 const char * const *p = usage_msg;
2899 PerlIO *out = PerlIO_stdout();
2901 PERL_ARGS_ASSERT_USAGE;
2904 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
2907 PerlIO_puts(out, *p++);
2910 /* convert a string of -D options (or digits) into an int.
2911 * sets *s to point to the char after the options */
2915 Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
2917 static const char * const usage_msgd[] = {
2918 " Debugging flag values: (see also -d)\n"
2919 " p Tokenizing and parsing (with v, displays parse stack)\n"
2920 " s Stack snapshots (with v, displays all stacks)\n"
2921 " l Context (loop) stack processing\n"
2922 " t Trace execution\n"
2923 " o Method and overloading resolution\n",
2924 " c String/numeric conversions\n"
2925 " P Print profiling info, source file input state\n"
2926 " m Memory and SV allocation\n"
2927 " f Format processing\n"
2928 " r Regular expression parsing and execution\n"
2929 " x Syntax tree dump\n",
2930 " u Tainting checks\n"
2931 " H Hash dump -- usurps values()\n"
2932 " X Scratchpad allocation\n"
2935 " R Include reference counts of dumped variables (eg when using -Ds)\n",
2936 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
2937 " v Verbose: use in conjunction with other flags\n"
2938 " C Copy On Write\n"
2939 " A Consistency checks on internal structures\n"
2940 " q quiet - currently only suppresses the 'EXECUTING' message\n"
2941 " M trace smart match resolution\n"
2942 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
2947 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
2950 /* if adding extra options, remember to update DEBUG_MASK */
2951 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMB";
2953 for (; isALNUM(**s); (*s)++) {
2954 const char * const d = strchr(debopts,**s);
2956 i |= 1 << (d - debopts);
2957 else if (ckWARN_d(WARN_DEBUGGING))
2958 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2959 "invalid option -D%c, use -D'' to see choices\n", **s);
2962 else if (isDIGIT(**s)) {
2964 for (; isALNUM(**s); (*s)++) ;
2966 else if (givehelp) {
2967 const char *const *p = usage_msgd;
2968 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
2971 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
2972 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2973 "-Dp not implemented on this platform\n");
2979 /* This routine handles any switches that can be given during run */
2982 Perl_moreswitches(pTHX_ const char *s)
2986 const char option = *s; /* used to remember option in -m/-M code */
2988 PERL_ARGS_ASSERT_MORESWITCHES;
2996 SvREFCNT_dec(PL_rs);
2997 if (s[1] == 'x' && s[2]) {
2998 const char *e = s+=2;
3004 flags = PERL_SCAN_SILENT_ILLDIGIT;
3005 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3006 if (s + numlen < e) {
3007 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3011 PL_rs = newSVpvs("");
3012 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
3013 tmps = (U8*)SvPVX(PL_rs);
3014 uvchr_to_utf8(tmps, rschar);
3015 SvCUR_set(PL_rs, UNISKIP(rschar));
3020 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3021 if (rschar & ~((U8)~0))
3022 PL_rs = &PL_sv_undef;
3023 else if (!rschar && numlen >= 2)
3024 PL_rs = newSVpvs("");
3026 char ch = (char)rschar;
3027 PL_rs = newSVpvn(&ch, 1);
3030 sv_setsv(get_sv("/", GV_ADD), PL_rs);
3035 PL_unicode = parse_unicode_opts( (const char **)&s );
3036 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3042 while (*s && !isSPACE(*s)) ++s;
3043 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
3054 forbid_setid('d', FALSE);
3057 /* -dt indicates to the debugger that threads will be used */
3058 if (*s == 't' && !isALNUM(s[1])) {
3060 my_setenv("PERL5DB_THREADED", "1");
3063 /* The following permits -d:Mod to accepts arguments following an =
3064 in the fashion that -MSome::Mod does. */
3065 if (*s == ':' || *s == '=') {
3072 sv = newSVpvs("no Devel::");
3074 sv = newSVpvs("use Devel::");
3078 end = s + strlen(s);
3080 /* We now allow -d:Module=Foo,Bar and -d:-Module */
3081 while(isALNUM(*s) || *s==':') ++s;
3083 sv_catpvn(sv, start, end - start);
3085 sv_catpvn(sv, start, s-start);
3086 /* Don't use NUL as q// delimiter here, this string goes in the
3088 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
3091 my_setenv("PERL5DB", SvPV_nolen_const(sv));
3095 PL_perldb = PERLDB_ALL;
3102 forbid_setid('D', FALSE);
3104 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
3105 #else /* !DEBUGGING */
3106 if (ckWARN_d(WARN_DEBUGGING))
3107 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3108 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
3109 for (s++; isALNUM(*s); s++) ;
3114 usage(PL_origargv[0]);
3117 Safefree(PL_inplace);
3118 #if defined(__CYGWIN__) /* do backup extension automagically */
3119 if (*(s+1) == '\0') {
3120 PL_inplace = savepvs(".bak");
3123 #endif /* __CYGWIN__ */
3125 const char * const start = ++s;
3126 while (*s && !isSPACE(*s))
3129 PL_inplace = savepvn(start, s - start);
3133 if (*s == '-') /* Additional switches on #! line. */
3137 case 'I': /* -I handled both here and in parse_body() */
3138 forbid_setid('I', FALSE);
3140 while (*s && isSPACE(*s))
3145 /* ignore trailing spaces (possibly followed by other switches) */
3147 for (e = p; *e && !isSPACE(*e); e++) ;
3151 } while (*p && *p != '-');
3153 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
3159 Perl_croak(aTHX_ "No directory specified for -I");
3165 SvREFCNT_dec(PL_ors_sv);
3171 PL_ors_sv = newSVpvs("\n");
3172 numlen = 3 + (*s == '0');
3173 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
3177 if (RsPARA(PL_rs)) {
3178 PL_ors_sv = newSVpvs("\n\n");
3181 PL_ors_sv = newSVsv(PL_rs);
3186 forbid_setid('M', FALSE); /* XXX ? */
3189 forbid_setid('m', FALSE); /* XXX ? */
3194 const char *use = "use ";
3196 /* -M-foo == 'no foo' */
3197 /* Leading space on " no " is deliberate, to make both
3198 possibilities the same length. */
3199 if (*s == '-') { use = " no "; ++s; }
3200 sv = newSVpvn(use,4);
3202 /* We allow -M'Module qw(Foo Bar)' */
3203 while(isALNUM(*s) || *s==':') {
3212 Perl_croak(aTHX_ "Module name required with -%c option",
3215 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3216 "contains single ':'",
3217 (int)(s - start), start, option);
3218 end = s + strlen(s);
3220 sv_catpvn(sv, start, end - start);
3221 if (option == 'm') {
3223 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
3224 sv_catpvs( sv, " ()");
3227 sv_catpvn(sv, start, s-start);
3228 /* Use NUL as q''-delimiter. */
3229 sv_catpvs(sv, " split(/,/,q\0");
3231 sv_catpvn(sv, s, end - s);
3232 sv_catpvs(sv, "\0)");
3235 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
3238 Perl_croak(aTHX_ "Missing argument to -%c", option);
3249 forbid_setid('s', FALSE);
3250 PL_doswitches = TRUE;
3264 PL_do_undump = TRUE;
3272 if (!sv_derived_from(PL_patchlevel, "version"))
3273 upg_version(PL_patchlevel, TRUE);
3276 SV* level= vstringify(PL_patchlevel);
3277 #ifdef PERL_PATCHNUM
3278 # ifdef PERL_GIT_UNCOMMITTED_CHANGES
3279 SV *num = newSVpvs(PERL_PATCHNUM "*");
3281 SV *num = newSVpvs(PERL_PATCHNUM);
3284 if (sv_len(num)>=sv_len(level) && strnEQ(SvPV_nolen(num),SvPV_nolen(level),sv_len(level))) {
3285 SvREFCNT_dec(level);
3288 Perl_sv_catpvf(aTHX_ level, " (%"SVf")", num);
3292 PerlIO_printf(PerlIO_stdout(),
3293 "\nThis is perl " STRINGIFY(PERL_REVISION)
3294 ", version " STRINGIFY(PERL_VERSION)
3295 ", subversion " STRINGIFY(PERL_SUBVERSION)
3296 " (%"SVf") built for " ARCHNAME, level
3298 SvREFCNT_dec(level);
3301 /* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3302 PerlIO_printf(PerlIO_stdout(),
3303 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
3304 SVfARG(vstringify(PL_patchlevel))));
3305 PerlIO_printf(PerlIO_stdout(),
3306 Perl_form(aTHX_ " built under %s at %s %s\n",
3307 OSNAME, __DATE__, __TIME__));
3308 PerlIO_printf(PerlIO_stdout(),
3309 Perl_form(aTHX_ " OS Specific Release: %s\n",
3312 #if defined(LOCAL_PATCH_COUNT)
3313 if (LOCAL_PATCH_COUNT > 0)
3314 PerlIO_printf(PerlIO_stdout(),
3315 "\n(with %d registered patch%s, "
3316 "see perl -V for more detail)",
3318 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
3321 PerlIO_printf(PerlIO_stdout(),
3322 "\n\nCopyright 1987-2011, Larry Wall\n");
3324 PerlIO_printf(PerlIO_stdout(),
3325 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
3328 PerlIO_printf(PerlIO_stdout(),
3329 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3330 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
3333 PerlIO_printf(PerlIO_stdout(),
3334 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
3335 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
3338 PerlIO_printf(PerlIO_stdout(),
3339 "atariST series port, ++jrb bammi@cadence.com\n");
3342 PerlIO_printf(PerlIO_stdout(),
3343 "BeOS port Copyright Tom Spindler, 1997-1999\n");
3346 PerlIO_printf(PerlIO_stdout(),
3347 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n");
3350 PerlIO_printf(PerlIO_stdout(),
3351 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
3354 PerlIO_printf(PerlIO_stdout(),
3355 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
3358 PerlIO_printf(PerlIO_stdout(),
3359 "VM/ESA port by Neale Ferguson, 1998-1999\n");
3362 PerlIO_printf(PerlIO_stdout(),
3363 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
3366 PerlIO_printf(PerlIO_stdout(),
3367 "EPOC port by Olaf Flebbe, 1999-2002\n");
3370 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
3371 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
3374 #ifdef __SYMBIAN32__
3375 PerlIO_printf(PerlIO_stdout(),
3376 "Symbian port by Nokia, 2004-2005\n");
3378 #ifdef BINARY_BUILD_NOTICE
3379 BINARY_BUILD_NOTICE;
3381 PerlIO_printf(PerlIO_stdout(),
3383 Perl may be copied only under the terms of either the Artistic License or the\n\
3384 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
3385 Complete documentation for Perl, including FAQ lists, should be found on\n\
3386 this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
3387 Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
3390 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
3391 PL_dowarn |= G_WARN_ON;
3396 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
3397 if (!specialWARN(PL_compiling.cop_warnings))
3398 PerlMemShared_free(PL_compiling.cop_warnings);
3399 PL_compiling.cop_warnings = pWARN_ALL ;
3403 PL_dowarn = G_WARN_ALL_OFF;
3404 if (!specialWARN(PL_compiling.cop_warnings))
3405 PerlMemShared_free(PL_compiling.cop_warnings);
3406 PL_compiling.cop_warnings = pWARN_NONE ;
3413 if (s[0] == '-') /* Additional switches on #! line. */
3418 #if defined(WIN32) || !defined(PERL_STRICT_CR)
3424 #ifdef ALTERNATE_SHEBANG
3425 case 'S': /* OS/2 needs -S on "extproc" line. */
3429 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
3434 /* compliments of Tom Christiansen */
3436 /* unexec() can be found in the Gnu emacs distribution */
3437 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
3440 Perl_my_unexec(pTHX)
3442 PERL_UNUSED_CONTEXT;
3444 SV * prog = newSVpv(BIN_EXP, 0);
3445 SV * file = newSVpv(PL_origfilename, 0);
3449 sv_catpvs(prog, "/perl");
3450 sv_catpvs(file, ".perldump");
3452 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3453 /* unexec prints msg to stderr in case of failure */
3454 PerlProc_exit(status);
3457 # include <lib$routines.h>
3458 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
3459 # elif defined(WIN32) || defined(__CYGWIN__)
3460 Perl_croak(aTHX_ "dump is not supported");
3462 ABORT(); /* for use with undump */
3467 /* initialize curinterp */
3473 # define PERLVAR(var,type)
3474 # define PERLVARA(var,n,type)
3475 # if defined(PERL_IMPLICIT_CONTEXT)
3476 # define PERLVARI(var,type,init) aTHX->var = init;
3477 # define PERLVARIC(var,type,init) aTHX->var = init;
3479 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
3480 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
3482 # include "intrpvar.h"
3488 # define PERLVAR(var,type)
3489 # define PERLVARA(var,n,type)
3490 # define PERLVARI(var,type,init) PL_##var = init;
3491 # define PERLVARIC(var,type,init) PL_##var = init;
3492 # include "intrpvar.h"
3499 /* As these are inside a structure, PERLVARI isn't capable of initialising
3501 PL_reg_oldcurpm = PL_reg_curpm = NULL;
3502 PL_reg_poscache = PL_reg_starttry = NULL;
3506 S_init_main_stash(pTHX)
3511 PL_curstash = PL_defstash = newHV();
3512 /* We know that the string "main" will be in the global shared string
3513 table, so it's a small saving to use it rather than allocate another
3515 PL_curstname = newSVpvs_share("main");
3516 gv = gv_fetchpvs("main::", GV_ADD|GV_NOTQUAL, SVt_PVHV);
3517 /* If we hadn't caused another reference to "main" to be in the shared
3518 string table above, then it would be worth reordering these two,
3519 because otherwise all we do is delete "main" from it as a consequence
3520 of the SvREFCNT_dec, only to add it again with hv_name_set */
3521 SvREFCNT_dec(GvHV(gv));
3522 hv_name_set(PL_defstash, "main", 4, 0);
3523 GvHV(gv) = MUTABLE_HV(SvREFCNT_inc_simple(PL_defstash));
3525 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpvs("INC", GV_ADD|GV_NOTQUAL,
3527 SvREFCNT_inc_simple_void(PL_incgv); /* Don't allow it to be freed */
3528 GvMULTI_on(PL_incgv);
3529 PL_hintgv = gv_fetchpvs("\010", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^H */
3530 GvMULTI_on(PL_hintgv);
3531 PL_defgv = gv_fetchpvs("_", GV_ADD|GV_NOTQUAL, SVt_PVAV);
3532 SvREFCNT_inc_simple_void(PL_defgv);
3533 PL_errgv = gv_HVadd(gv_fetchpvs("@", GV_ADD|GV_NOTQUAL, SVt_PV));
3534 SvREFCNT_inc_simple_void(PL_errgv);
3535 GvMULTI_on(PL_errgv);
3536 PL_replgv = gv_fetchpvs("\022", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^R */
3537 GvMULTI_on(PL_replgv);
3538 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
3539 #ifdef PERL_DONT_CREATE_GVSV
3542 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
3544 PL_curstash = PL_defstash;
3545 CopSTASH_set(&PL_compiling, PL_defstash);
3546 PL_debstash = GvHV(gv_fetchpvs("DB::", GV_ADDMULTI, SVt_PVHV));
3547 PL_globalstash = GvHV(gv_fetchpvs("CORE::GLOBAL::", GV_ADDMULTI,
3549 /* We must init $/ before switches are processed. */
3550 sv_setpvs(get_sv("/", GV_ADD), "\n");
3554 S_open_script(pTHX_ const char *scriptname, bool dosearch,
3555 bool *suidscript, PerlIO **rsfpp)
3560 PERL_ARGS_ASSERT_OPEN_SCRIPT;
3563 PL_origfilename = savepvs("-e");
3566 /* if find_script() returns, it returns a malloc()-ed value */
3567 scriptname = PL_origfilename = find_script(scriptname, dosearch, NULL, 1);
3569 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
3570 const char *s = scriptname + 8;
3576 * Tell apart "normal" usage of fdscript, e.g.
3577 * with bash on FreeBSD:
3578 * perl <( echo '#!perl -DA'; echo 'print "$0\n"')
3579 * from usage in suidperl.
3580 * Does any "normal" usage leave garbage after the number???
3581 * Is it a mistake to use a similar /dev/fd/ construct for
3586 * Be supersafe and do some sanity-checks.
3587 * Still, can we be sure we got the right thing?
3590 Perl_croak(aTHX_ "Wrong syntax (suid) fd script name \"%s\"\n", s);
3593 Perl_croak(aTHX_ "Missing (suid) fd script name\n");
3595 scriptname = savepv(s + 1);
3596 Safefree(PL_origfilename);
3597 PL_origfilename = (char *)scriptname;
3602 CopFILE_free(PL_curcop);
3603 CopFILE_set(PL_curcop, PL_origfilename);
3604 if (*PL_origfilename == '-' && PL_origfilename[1] == '\0')
3605 scriptname = (char *)"";
3606 if (fdscript >= 0) {
3607 *rsfpp = PerlIO_fdopen(fdscript,PERL_SCRIPT_MODE);
3608 # if defined(HAS_FCNTL) && defined(F_SETFD)
3610 /* ensure close-on-exec */
3611 fcntl(PerlIO_fileno(*rsfpp),F_SETFD,1);
3614 else if (!*scriptname) {
3615 forbid_setid(0, *suidscript);
3616 *rsfpp = PerlIO_stdin();
3619 #ifdef FAKE_BIT_BUCKET
3620 /* This hack allows one not to have /dev/null (or BIT_BUCKET as it
3621 * is called) and still have the "-e" work. (Believe it or not,
3622 * a /dev/null is required for the "-e" to work because source
3623 * filter magic is used to implement it. ) This is *not* a general
3624 * replacement for a /dev/null. What we do here is create a temp
3625 * file (an empty file), open up that as the script, and then
3626 * immediately close and unlink it. Close enough for jazz. */
3627 #define FAKE_BIT_BUCKET_PREFIX "/tmp/perlnull-"
3628 #define FAKE_BIT_BUCKET_SUFFIX "XXXXXXXX"
3629 #define FAKE_BIT_BUCKET_TEMPLATE FAKE_BIT_BUCKET_PREFIX FAKE_BIT_BUCKET_SUFFIX
3630 char tmpname[sizeof(FAKE_BIT_BUCKET_TEMPLATE)] = {
3631 FAKE_BIT_BUCKET_TEMPLATE
3633 const char * const err = "Failed to create a fake bit bucket";
3634 if (strEQ(scriptname, BIT_BUCKET)) {
3635 #ifdef HAS_MKSTEMP /* Hopefully mkstemp() is safe here. */
3636 int tmpfd = mkstemp(tmpname);
3638 scriptname = tmpname;
3641 Perl_croak(aTHX_ err);
3644 scriptname = mktemp(tmpname);
3646 Perl_croak(aTHX_ err);
3651 *rsfpp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
3652 #ifdef FAKE_BIT_BUCKET
3653 if (memEQ(scriptname, FAKE_BIT_BUCKET_PREFIX,
3654 sizeof(FAKE_BIT_BUCKET_PREFIX) - 1)
3655 && strlen(scriptname) == sizeof(tmpname) - 1) {
3658 scriptname = BIT_BUCKET;
3660 # if defined(HAS_FCNTL) && defined(F_SETFD)
3662 /* ensure close-on-exec */
3663 fcntl(PerlIO_fileno(*rsfpp),F_SETFD,1);
3667 /* PSz 16 Sep 03 Keep neat error message */
3669 Perl_croak(aTHX_ "Can't open "BIT_BUCKET": %s\n", Strerror(errno));
3671 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3672 CopFILE(PL_curcop), Strerror(errno));
3678 * I_SYSSTATVFS HAS_FSTATVFS
3680 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
3681 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
3682 * here so that metaconfig picks them up. */
3685 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
3686 /* Don't even need this function. */
3689 S_validate_suid(pTHX_ PerlIO *rsfp)
3691 PERL_ARGS_ASSERT_VALIDATE_SUID;
3693 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
3696 PerlLIO_fstat(PerlIO_fileno(rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3697 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3699 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3702 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3703 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3704 /* not set-id, must be wrapped */
3707 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3710 S_find_beginning(pTHX_ SV* linestr_sv, PerlIO *rsfp)
3714 register const char *s2;
3716 PERL_ARGS_ASSERT_FIND_BEGINNING;
3718 /* skip forward in input to the real script? */
3721 if ((s = sv_gets(linestr_sv, rsfp, 0)) == NULL)
3722 Perl_croak(aTHX_ "No Perl script found in input\n");
3724 } while (!(*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))));
3725 PerlIO_ungetc(rsfp, '\n'); /* to keep line count right */
3726 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3728 while (*s == ' ' || *s == '\t') s++;
3730 while (isDIGIT(s2[-1]) || s2[-1] == '-' || s2[-1] == '.'
3731 || s2[-1] == '_') s2--;
3732 if (strnEQ(s2-4,"perl",4))
3733 while ((s = moreswitches(s)))
3743 PL_uid = PerlProc_getuid();
3744 PL_euid = PerlProc_geteuid();
3745 PL_gid = PerlProc_getgid();
3746 PL_egid = PerlProc_getegid();
3748 PL_uid |= PL_gid << 16;
3749 PL_euid |= PL_egid << 16;
3751 /* Should not happen: */
3752 CHECK_MALLOC_TAINT(PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3753 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3756 * Should go by suidscript, not uid!=euid: why disallow
3757 * system("ls") in scripts run from setuid things?
3758 * Or, is this run before we check arguments and set suidscript?
3759 * What about SETUID_SCRIPTS_ARE_SECURE_NOW: could we use fdscript then?
3760 * (We never have suidscript, can we be sure to have fdscript?)
3761 * Or must then go by UID checks? See comments in forbid_setid also.
3765 /* This is used very early in the lifetime of the program,
3766 * before even the options are parsed, so PL_tainting has
3767 * not been initialized properly. */
3769 Perl_doing_taint(int argc, char *argv[], char *envp[])
3771 #ifndef PERL_IMPLICIT_SYS
3772 /* If we have PERL_IMPLICIT_SYS we can't call getuid() et alia
3773 * before we have an interpreter-- and the whole point of this
3774 * function is to be called at such an early stage. If you are on
3775 * a system with PERL_IMPLICIT_SYS but you do have a concept of
3776 * "tainted because running with altered effective ids', you'll
3777 * have to add your own checks somewhere in here. The two most
3778 * known samples of 'implicitness' are Win32 and NetWare, neither
3779 * of which has much of concept of 'uids'. */
3780 int uid = PerlProc_getuid();
3781 int euid = PerlProc_geteuid();
3782 int gid = PerlProc_getgid();
3783 int egid = PerlProc_getegid();
3790 if (uid && (euid != uid || egid != gid))
3792 #endif /* !PERL_IMPLICIT_SYS */
3793 /* This is a really primitive check; environment gets ignored only
3794 * if -T are the first chars together; otherwise one gets
3795 * "Too late" message. */
3796 if ( argc > 1 && argv[1][0] == '-'
3797 && (argv[1][1] == 't' || argv[1][1] == 'T') )
3802 /* Passing the flag as a single char rather than a string is a slight space
3803 optimisation. The only message that isn't /^-.$/ is
3804 "program input from stdin", which is substituted in place of '\0', which
3805 could never be a command line flag. */
3807 S_forbid_setid(pTHX_ const char flag, const bool suidscript) /* g */
3810 char string[3] = "-x";
3811 const char *message = "program input from stdin";
3818 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
3819 if (PL_euid != PL_uid)
3820 Perl_croak(aTHX_ "No %s allowed while running setuid", message);
3821 if (PL_egid != PL_gid)
3822 Perl_croak(aTHX_ "No %s allowed while running setgid", message);
3823 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3825 Perl_croak(aTHX_ "No %s allowed with (suid) fdscript", message);
3829 Perl_init_dbargs(pTHX)
3831 AV *const args = PL_dbargs = GvAV(gv_AVadd((gv_fetchpvs("DB::args",
3836 /* Someone has already created it.
3837 It might have entries, and if we just turn off AvREAL(), they will
3838 "leak" until global destruction. */
3841 AvREAL_off(PL_dbargs); /* XXX should be REIFY (see av.h) */
3845 Perl_init_debugger(pTHX)
3848 HV * const ostash = PL_curstash;
3850 PL_curstash = PL_debstash;
3852 Perl_init_dbargs(aTHX);
3853 PL_DBgv = gv_fetchpvs("DB::DB", GV_ADDMULTI, SVt_PVGV);
3854 PL_DBline = gv_fetchpvs("DB::dbline", GV_ADDMULTI, SVt_PVAV);
3855 PL_DBsub = gv_HVadd(gv_fetchpvs("DB::sub", GV_ADDMULTI, SVt_PVHV));
3856 PL_DBsingle = GvSV((gv_fetchpvs("DB::single", GV_ADDMULTI, SVt_PV)));
3857 if (!SvIOK(PL_DBsingle))
3858 sv_setiv(PL_DBsingle, 0);
3859 PL_DBtrace = GvSV((gv_fetchpvs("DB::trace", GV_ADDMULTI, SVt_PV)));
3860 if (!SvIOK(PL_DBtrace))
3861 sv_setiv(PL_DBtrace, 0);
3862 PL_DBsignal = GvSV((gv_fetchpvs("DB::signal", GV_ADDMULTI, SVt_PV)));
3863 if (!SvIOK(PL_DBsignal))
3864 sv_setiv(PL_DBsignal, 0);
3865 PL_curstash = ostash;
3868 #ifndef STRESS_REALLOC
3869 #define REASONABLE(size) (size)
3871 #define REASONABLE(size) (1) /* unreasonable */
3875 Perl_init_stacks(pTHX)
3878 /* start with 128-item stack and 8K cxstack */
3879 PL_curstackinfo = new_stackinfo(REASONABLE(128),
3880 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3881 PL_curstackinfo->si_type = PERLSI_MAIN;
3882 PL_curstack = PL_curstackinfo->si_stack;
3883 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
3885 PL_stack_base = AvARRAY(PL_curstack);
3886 PL_stack_sp = PL_stack_base;
3887 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
3889 Newx(PL_tmps_stack,REASONABLE(128),SV*);
3892 PL_tmps_max = REASONABLE(128);
3894 Newx(PL_markstack,REASONABLE(32),I32);
3895 PL_markstack_ptr = PL_markstack;
3896 PL_markstack_max = PL_markstack + REASONABLE(32);
3900 Newx(PL_scopestack,REASONABLE(32),I32);
3902 Newx(PL_scopestack_name,REASONABLE(32),const char*);
3904 PL_scopestack_ix = 0;
3905 PL_scopestack_max = REASONABLE(32);
3907 Newx(PL_savestack,REASONABLE(128),ANY);
3908 PL_savestack_ix = 0;
3909 PL_savestack_max = REASONABLE(128);
3918 while (PL_curstackinfo->si_next)
3919 PL_curstackinfo = PL_curstackinfo->si_next;
3920 while (PL_curstackinfo) {
3921 PERL_SI *p = PL_curstackinfo->si_prev;
3922 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3923 Safefree(PL_curstackinfo->si_cxstack);
3924 Safefree(PL_curstackinfo);
3925 PL_curstackinfo = p;
3927 Safefree(PL_tmps_stack);
3928 Safefree(PL_markstack);
3929 Safefree(PL_scopestack);
3931 Safefree(PL_scopestack_name);
3933 Safefree(PL_savestack);
3937 Perl_populate_isa(pTHX_ const char *name, STRLEN len, ...)
3939 GV *const gv = gv_fetchpvn(name, len, GV_ADD | GV_ADDMULTI, SVt_PVAV);
3940 AV *const isa = GvAVn(gv);
3943 PERL_ARGS_ASSERT_POPULATE_ISA;
3945 if(AvFILLp(isa) != -1)
3948 /* NOTE: No support for tied ISA */
3950 va_start(args, len);
3952 const char *const parent = va_arg(args, const char*);
3957 parent_len = va_arg(args, size_t);
3959 /* Arguments are supplied with a trailing :: */
3960 assert(parent_len > 2);
3961 assert(parent[parent_len - 1] == ':');
3962 assert(parent[parent_len - 2] == ':');
3963 av_push(isa, newSVpvn(parent, parent_len - 2));
3964 (void) gv_fetchpvn(parent, parent_len, GV_ADD, SVt_PVGV);
3971 S_init_predump_symbols(pTHX)
3977 sv_setpvs(get_sv("\"", GV_ADD), " ");
3978 PL_ofsgv = (GV*)SvREFCNT_inc(gv_fetchpvs(",", GV_ADD|GV_NOTQUAL, SVt_PV));
3981 /* Historically, PVIOs were blessed into IO::Handle, unless
3982 FileHandle was loaded, in which case they were blessed into
3983 that. Action at a distance.
3984 However, if we simply bless into IO::Handle, we break code
3985 that assumes that PVIOs will have (among others) a seek
3986 method. IO::File inherits from IO::Handle and IO::Seekable,
3987 and provides the needed methods. But if we simply bless into
3988 it, then we break code that assumed that by loading
3989 IO::Handle, *it* would work.
3990 So a compromise is to set up the correct @IO::File::ISA,
3991 so that code that does C<use IO::Handle>; will still work.
3994 Perl_populate_isa(aTHX_ STR_WITH_LEN("IO::File::ISA"),
3995 STR_WITH_LEN("IO::Handle::"),
3996 STR_WITH_LEN("IO::Seekable::"),
3997 STR_WITH_LEN("Exporter::"),
4000 PL_stdingv = gv_fetchpvs("STDIN", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4001 GvMULTI_on(PL_stdingv);
4002 io = GvIOp(PL_stdingv);
4003 IoTYPE(io) = IoTYPE_RDONLY;
4004 IoIFP(io) = PerlIO_stdin();
4005 tmpgv = gv_fetchpvs("stdin", GV_ADD|GV_NOTQUAL, SVt_PV);
4007 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4009 tmpgv = gv_fetchpvs("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4012 IoTYPE(io) = IoTYPE_WRONLY;
4013 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
4015 tmpgv = gv_fetchpvs("stdout", GV_ADD|GV_NOTQUAL, SVt_PV);
4017 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4019 PL_stderrgv = gv_fetchpvs("STDERR", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4020 GvMULTI_on(PL_stderrgv);
4021 io = GvIOp(PL_stderrgv);
4022 IoTYPE(io) = IoTYPE_WRONLY;
4023 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
4024 tmpgv = gv_fetchpvs("stderr", GV_ADD|GV_NOTQUAL, SVt_PV);
4026 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4028 PL_statname = newSV(0); /* last filename we did stat on */
4032 Perl_init_argv_symbols(pTHX_ register int argc, register char **argv)
4036 PERL_ARGS_ASSERT_INIT_ARGV_SYMBOLS;
4038 argc--,argv++; /* skip name of script */
4039 if (PL_doswitches) {
4040 for (; argc > 0 && **argv == '-'; argc--,argv++) {
4044 if (argv[0][1] == '-' && !argv[0][2]) {
4048 if ((s = strchr(argv[0], '='))) {
4049 const char *const start_name = argv[0] + 1;
4050 sv_setpv(GvSV(gv_fetchpvn_flags(start_name, s - start_name,
4051 TRUE, SVt_PV)), s + 1);
4054 sv_setiv(GvSV(gv_fetchpv(argv[0]+1, GV_ADD, SVt_PV)),1);
4057 if ((PL_argvgv = gv_fetchpvs("ARGV", GV_ADD|GV_NOTQUAL, SVt_PVAV))) {
4058 GvMULTI_on(PL_argvgv);
4059 (void)gv_AVadd(PL_argvgv);
4060 av_clear(GvAVn(PL_argvgv));
4061 for (; argc > 0; argc--,argv++) {
4062 SV * const sv = newSVpv(argv[0],0);
4063 av_push(GvAVn(PL_argvgv),sv);
4064 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
4065 if (PL_unicode & PERL_UNICODE_ARGV_FLAG)
4068 if (PL_unicode & PERL_UNICODE_WIDESYSCALLS_FLAG) /* Sarathy? */
4069 (void)sv_utf8_decode(sv);
4075 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
4080 PERL_ARGS_ASSERT_INIT_POSTDUMP_SYMBOLS;
4082 PL_toptarget = newSV_type(SVt_PVFM);
4083 sv_setpvs(PL_toptarget, "");
4084 PL_bodytarget = newSV_type(SVt_PVFM);
4085 sv_setpvs(PL_bodytarget, "");
4086 PL_formtarget = PL_bodytarget;
4090 init_argv_symbols(argc,argv);
4092 if ((tmpgv = gv_fetchpvs("0", GV_ADD|GV_NOTQUAL, SVt_PV))) {
4093 sv_setpv(GvSV(tmpgv),PL_origfilename);
4095 if ((PL_envgv = gv_fetchpvs("ENV", GV_ADD|GV_NOTQUAL, SVt_PVHV))) {
4097 bool env_is_not_environ;
4098 GvMULTI_on(PL_envgv);
4099 hv = GvHVn(PL_envgv);
4100 hv_magic(hv, NULL, PERL_MAGIC_env);
4102 #ifdef USE_ENVIRON_ARRAY
4103 /* Note that if the supplied env parameter is actually a copy
4104 of the global environ then it may now point to free'd memory
4105 if the environment has been modified since. To avoid this
4106 problem we treat env==NULL as meaning 'use the default'
4110 env_is_not_environ = env != environ;
4111 if (env_is_not_environ
4112 # ifdef USE_ITHREADS
4113 && PL_curinterp == aTHX
4122 for (; *env; env++) {
4125 if (!(s = strchr(old_var,'=')) || s == old_var)
4128 #if defined(MSDOS) && !defined(DJGPP)
4130 (void)strupr(old_var);
4133 sv = newSVpv(s+1, 0);
4134 (void)hv_store(hv, old_var, s - old_var, sv, 0);
4135 if (env_is_not_environ)
4139 #endif /* USE_ENVIRON_ARRAY */
4140 #endif /* !PERL_MICRO */
4143 if ((tmpgv = gv_fetchpvs("$", GV_ADD|GV_NOTQUAL, SVt_PV))) {
4144 SvREADONLY_off(GvSV(tmpgv));
4145 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
4146 SvREADONLY_on(GvSV(tmpgv));
4148 #ifdef THREADS_HAVE_PIDS
4149 PL_ppid = (IV)getppid();
4152 /* touch @F array to prevent spurious warnings 20020415 MJD */
4154 (void) get_av("main::F", GV_ADD | GV_ADDMULTI);
4159 S_init_perllib(pTHX)
4163 const char *perl5lib = NULL;
4166 #if defined(WIN32) && !defined(PERL_IS_MINIPERL)
4172 perl5lib = PerlEnv_getenv("PERL5LIB");
4174 * It isn't possible to delete an environment variable with
4175 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4176 * case we treat PERL5LIB as undefined if it has a zero-length value.
4178 #if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
4179 if (perl5lib && *perl5lib != '\0')
4183 incpush_use_sep(perl5lib, 0, INCPUSH_ADD_SUB_DIRS);
4185 s = PerlEnv_getenv("PERLLIB");
4187 incpush_use_sep(s, 0, 0);
4190 /* Treat PERL5?LIB as a possible search list logical name -- the
4191 * "natural" VMS idiom for a Unix path string. We allow each
4192 * element to be a set of |-separated directories for compatibility.
4196 if (my_trnlnm("PERL5LIB",buf,0))
4198 incpush_use_sep(buf, 0, INCPUSH_ADD_SUB_DIRS);
4199 } while (my_trnlnm("PERL5LIB",buf,++idx));
4201 while (my_trnlnm("PERLLIB",buf,idx++))
4202 incpush_use_sep(buf, 0, 0);
4207 #ifndef PERL_IS_MINIPERL
4208 /* miniperl gets just -I..., the split of $ENV{PERL5LIB}, and "." in @INC
4209 (and not the architecture specific directories from $ENV{PERL5LIB}) */
4211 /* Use the ~-expanded versions of APPLLIB (undocumented),
4212 SITEARCH, SITELIB, VENDORARCH, VENDORLIB, ARCHLIB and PRIVLIB
4215 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP),
4216 INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4220 /* sitearch is always relative to sitelib on Windows for
4221 * DLL-based path intuition to work correctly */
4222 # if !defined(WIN32)
4223 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITEARCH_EXP),
4224 INCPUSH_CAN_RELOCATE);
4230 /* this picks up sitearch as well */
4231 s = win32_get_sitelib(PERL_FS_VERSION, &len);
4233 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4235 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_EXP), INCPUSH_CAN_RELOCATE);
4239 #ifdef PERL_VENDORARCH_EXP
4240 /* vendorarch is always relative to vendorlib on Windows for
4241 * DLL-based path intuition to work correctly */
4242 # if !defined(WIN32)
4243 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORARCH_EXP),
4244 INCPUSH_CAN_RELOCATE);
4248 #ifdef PERL_VENDORLIB_EXP
4250 /* this picks up vendorarch as well */
4251 s = win32_get_vendorlib(PERL_FS_VERSION, &len);
4253 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4255 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_EXP),
4256 INCPUSH_CAN_RELOCATE);
4261 S_incpush_use_sep(aTHX_ STR_WITH_LEN(ARCHLIB_EXP), INCPUSH_CAN_RELOCATE);
4265 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
4269 s = win32_get_privlib(PERL_FS_VERSION, &len);
4271 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4274 S_incpush_use_sep(aTHX_ PRIVLIB_EXP, 0, INCPUSH_CAN_RELOCATE);
4276 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PRIVLIB_EXP), INCPUSH_CAN_RELOCATE);
4280 #ifdef PERL_OTHERLIBDIRS
4281 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS),
4282 INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_NOT_BASEDIR
4283 |INCPUSH_CAN_RELOCATE);
4289 * It isn't possible to delete an environment variable with
4290 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4291 * case we treat PERL5LIB as undefined if it has a zero-length value.
4293 #if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
4294 if (perl5lib && *perl5lib != '\0')
4298 incpush_use_sep(perl5lib, 0,
4299 INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
4301 /* Treat PERL5?LIB as a possible search list logical name -- the
4302 * "natural" VMS idiom for a Unix path string. We allow each
4303 * element to be a set of |-separated directories for compatibility.
4307 if (my_trnlnm("PERL5LIB",buf,0))
4309 incpush_use_sep(buf, 0,
4310 INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
4311 } while (my_trnlnm("PERL5LIB",buf,++idx));
4315 /* Use the ~-expanded versions of APPLLIB (undocumented),
4316 SITELIB and VENDORLIB for older versions
4319 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP), INCPUSH_ADD_OLD_VERS
4320 |INCPUSH_NOT_BASEDIR|INCPUSH_CAN_RELOCATE);
4323 #if defined(SITELIB_STEM) && defined(PERL_INC_VERSION_LIST)
4324 /* Search for version-specific dirs below here */
4325 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_STEM),
4326 INCPUSH_ADD_OLD_VERS|INCPUSH_CAN_RELOCATE);
4330 #if defined(PERL_VENDORLIB_STEM) && defined(PERL_INC_VERSION_LIST)
4331 /* Search for version-specific dirs below here */
4332 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_STEM),
4333 INCPUSH_ADD_OLD_VERS|INCPUSH_CAN_RELOCATE);
4336 #ifdef PERL_OTHERLIBDIRS
4337 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS),
4338 INCPUSH_ADD_OLD_VERS|INCPUSH_ADD_ARCHONLY_SUB_DIRS
4339 |INCPUSH_CAN_RELOCATE);
4341 #endif /* !PERL_IS_MINIPERL */
4344 S_incpush(aTHX_ STR_WITH_LEN("."), 0);
4347 #if defined(DOSISH) || defined(EPOC) || defined(__SYMBIAN32__)
4348 # define PERLLIB_SEP ';'
4351 # define PERLLIB_SEP '|'
4353 # define PERLLIB_SEP ':'
4356 #ifndef PERLLIB_MANGLE
4357 # define PERLLIB_MANGLE(s,n) (s)
4360 #ifndef PERL_IS_MINIPERL
4361 /* Push a directory onto @INC if it exists.
4362 Generate a new SV if we do this, to save needing to copy the SV we push
4365 S_incpush_if_exists(pTHX_ AV *const av, SV *dir, SV *const stem)
4370 PERL_ARGS_ASSERT_INCPUSH_IF_EXISTS;
4372 if (PerlLIO_stat(SvPVX_const(dir), &tmpstatbuf) >= 0 &&
4373 S_ISDIR(tmpstatbuf.st_mode)) {
4375 dir = newSVsv(stem);
4377 /* Truncate dir back to stem. */
4378 SvCUR_set(dir, SvCUR(stem));
4385 S_incpush(pTHX_ const char *const dir, STRLEN len, U32 flags)
4388 #ifndef PERL_IS_MINIPERL
4389 const U8 using_sub_dirs
4390 = (U8)flags & (INCPUSH_ADD_VERSIONED_SUB_DIRS
4391 |INCPUSH_ADD_ARCHONLY_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
4392 const U8 add_versioned_sub_dirs
4393 = (U8)flags & INCPUSH_ADD_VERSIONED_SUB_DIRS;
4394 const U8 add_archonly_sub_dirs
4395 = (U8)flags & INCPUSH_ADD_ARCHONLY_SUB_DIRS;
4396 #ifdef PERL_INC_VERSION_LIST
4397 const U8 addoldvers = (U8)flags & INCPUSH_ADD_OLD_VERS;
4400 const U8 canrelocate = (U8)flags & INCPUSH_CAN_RELOCATE;
4401 const U8 unshift = (U8)flags & INCPUSH_UNSHIFT;
4402 const U8 push_basedir = (flags & INCPUSH_NOT_BASEDIR) ? 0 : 1;
4403 AV *const inc = GvAVn(PL_incgv);
4405 PERL_ARGS_ASSERT_INCPUSH;
4408 /* Could remove this vestigial extra block, if we don't mind a lot of
4409 re-indenting diff noise. */
4412 /* Change 20189146be79a0596543441fa369c6bf7f85103f, to fix RT#6665,
4413 arranged to unshift #! line -I onto the front of @INC. However,
4414 -I can add version and architecture specific libraries, and they
4415 need to go first. The old code assumed that it was always
4416 pushing. Hence to make it work, need to push the architecture
4417 (etc) libraries onto a temporary array, then "unshift" that onto
4418 the front of @INC. */
4419 #ifndef PERL_IS_MINIPERL
4420 AV *const av = (using_sub_dirs) ? (unshift ? newAV() : inc) : NULL;
4424 /* I am not convinced that this is valid when PERLLIB_MANGLE is
4425 defined to so something (in os2/os2.c), but the code has been
4426 this way, ignoring any possible changed of length, since
4427 760ac839baf413929cd31cc32ffd6dba6b781a81 (5.003_02) so I'll leave
4429 libdir = newSVpvn(PERLLIB_MANGLE(dir, len), len);
4431 libdir = newSVpv(PERLLIB_MANGLE(dir, 0), 0);
4438 if ((unix = tounixspec_ts(SvPV(libdir,len),NULL)) != NULL) {
4440 while (unix[len-1] == '/') len--; /* Cosmetic */
4441 sv_usepvn(libdir,unix,len);
4444 PerlIO_printf(Perl_error_log,
4445 "Failed to unixify @INC element \"%s\"\n",
4449 /* Do the if() outside the #ifdef to avoid warnings about an unused
4452 #ifdef PERL_RELOCATABLE_INC
4454 * Relocatable include entries are marked with a leading .../
4457 * 0: Remove that leading ".../"
4458 * 1: Remove trailing executable name (anything after the last '/')
4459 * from the perl path to give a perl prefix
4461 * While the @INC element starts "../" and the prefix ends with a real
4462 * directory (ie not . or ..) chop that real directory off the prefix
4463 * and the leading "../" from the @INC element. ie a logical "../"
4465 * Finally concatenate the prefix and the remainder of the @INC element
4466 * The intent is that /usr/local/bin/perl and .../../lib/perl5
4467 * generates /usr/local/lib/perl5
4469 const char *libpath = SvPVX(libdir);
4470 STRLEN libpath_len = SvCUR(libdir);
4471 if (libpath_len >= 4 && memEQ (libpath, ".../", 4)) {
4473 SV * const caret_X = get_sv("\030", 0);
4474 /* Going to use the SV just as a scratch buffer holding a C
4480 /* $^X is *the* source of taint if tainting is on, hence
4481 SvPOK() won't be true. */
4483 assert(SvPOKp(caret_X));
4484 prefix_sv = newSVpvn_flags(SvPVX(caret_X), SvCUR(caret_X),
4486 /* Firstly take off the leading .../
4487 If all else fail we'll do the paths relative to the current
4489 sv_chop(libdir, libpath + 4);
4490 /* Don't use SvPV as we're intentionally bypassing taining,
4491 mortal copies that the mg_get of tainting creates, and
4492 corruption that seems to come via the save stack.
4493 I guess that the save stack isn't correctly set up yet. */
4494 libpath = SvPVX(libdir);
4495 libpath_len = SvCUR(libdir);
4497 /* This would work more efficiently with memrchr, but as it's
4498 only a GNU extension we'd need to probe for it and
4499 implement our own. Not hard, but maybe not worth it? */
4501 prefix = SvPVX(prefix_sv);
4502 lastslash = strrchr(prefix, '/');
4504 /* First time in with the *lastslash = '\0' we just wipe off
4505 the trailing /perl from (say) /usr/foo/bin/perl
4509 while ((*lastslash = '\0'), /* Do that, come what may. */
4510 (libpath_len >= 3 && memEQ(libpath, "../", 3)
4511 && (lastslash = strrchr(prefix, '/')))) {
4512 if (lastslash[1] == '\0'
4513 || (lastslash[1] == '.'
4514 && (lastslash[2] == '/' /* ends "/." */
4515 || (lastslash[2] == '/'
4516 && lastslash[3] == '/' /* or "/.." */
4518 /* Prefix ends "/" or "/." or "/..", any of which
4519 are fishy, so don't do any more logical cleanup.
4523 /* Remove leading "../" from path */
4526 /* Next iteration round the loop removes the last
4527 directory name from prefix by writing a '\0' in
4528 the while clause. */
4530 /* prefix has been terminated with a '\0' to the correct
4531 length. libpath points somewhere into the libdir SV.
4532 We need to join the 2 with '/' and drop the result into
4534 tempsv = Perl_newSVpvf(aTHX_ "%s/%s", prefix, libpath);
4535 SvREFCNT_dec(libdir);
4536 /* And this is the new libdir. */
4539 (PL_uid != PL_euid || PL_gid != PL_egid)) {
4540 /* Need to taint relocated paths if running set ID */
4541 SvTAINTED_on(libdir);
4544 SvREFCNT_dec(prefix_sv);
4548 #ifndef PERL_IS_MINIPERL
4550 * BEFORE pushing libdir onto @INC we may first push version- and
4551 * archname-specific sub-directories.
4553 if (using_sub_dirs) {
4555 #ifdef PERL_INC_VERSION_LIST
4556 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
4557 const char * const incverlist[] = { PERL_INC_VERSION_LIST };
4558 const char * const *incver;
4560 subdir = newSVsv(libdir);
4562 if (add_versioned_sub_dirs) {
4563 /* .../version/archname if -d .../version/archname */
4564 sv_catpvs(subdir, "/" PERL_FS_VERSION "/" ARCHNAME);
4565 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4567 /* .../version if -d .../version */
4568 sv_catpvs(subdir, "/" PERL_FS_VERSION);
4569 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4572 #ifdef PERL_INC_VERSION_LIST
4574 for (incver = incverlist; *incver; incver++) {
4575 /* .../xxx if -d .../xxx */
4576 Perl_sv_catpvf(aTHX_ subdir, "/%s", *incver);
4577 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4582 if (add_archonly_sub_dirs) {
4583 /* .../archname if -d .../archname */
4584 sv_catpvs(subdir, "/" ARCHNAME);
4585 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4589 assert (SvREFCNT(subdir) == 1);
4590 SvREFCNT_dec(subdir);
4592 #endif /* !PERL_IS_MINIPERL */
4593 /* finally add this lib directory at the end of @INC */
4595 #ifdef PERL_IS_MINIPERL
4596 const U32 extra = 0;
4598 U32 extra = av_len(av) + 1;
4600 av_unshift(inc, extra + push_basedir);
4602 av_store(inc, extra, libdir);
4603 #ifndef PERL_IS_MINIPERL
4605 /* av owns a reference, av_store() expects to be donated a
4606 reference, and av expects to be sane when it's cleared.
4607 If I wanted to be naughty and wrong, I could peek inside the
4608 implementation of av_clear(), realise that it uses
4609 SvREFCNT_dec() too, so av's array could be a run of NULLs,
4610 and so directly steal from it (with a memcpy() to inc, and
4611 then memset() to NULL them out. But people copy code from the
4612 core expecting it to be best practise, so let's use the API.
4613 Although studious readers will note that I'm not checking any
4615 av_store(inc, extra, SvREFCNT_inc(*av_fetch(av, extra, FALSE)));
4620 else if (push_basedir) {
4621 av_push(inc, libdir);
4624 if (!push_basedir) {
4625 assert (SvREFCNT(libdir) == 1);
4626 SvREFCNT_dec(libdir);
4632 S_incpush_use_sep(pTHX_ const char *p, STRLEN len, U32 flags)
4636 /* This logic has been broken out from S_incpush(). It may be possible to
4639 PERL_ARGS_ASSERT_INCPUSH_USE_SEP;
4646 /* Break at all separators */
4647 while ((s = (const char*)memchr(p, PERLLIB_SEP, end - p))) {
4649 /* skip any consecutive separators */
4651 /* Uncomment the next line for PATH semantics */
4652 /* But you'll need to write tests */
4653 /* av_push(GvAVn(PL_incgv), newSVpvs(".")); */
4655 incpush(p, (STRLEN)(s - p), flags);
4660 incpush(p, (STRLEN)(end - p), flags);
4665 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
4669 volatile const line_t oldline = PL_curcop ? CopLINE(PL_curcop) : 0;
4675 PERL_ARGS_ASSERT_CALL_LIST;
4677 while (av_len(paramList) >= 0) {
4678 cv = MUTABLE_CV(av_shift(paramList));
4680 if (paramList == PL_beginav) {
4681 /* save PL_beginav for compiler */
4682 Perl_av_create_and_push(aTHX_ &PL_beginav_save, MUTABLE_SV(cv));
4684 else if (paramList == PL_checkav) {
4685 /* save PL_checkav for compiler */
4686 Perl_av_create_and_push(aTHX_ &PL_checkav_save, MUTABLE_SV(cv));
4688 else if (paramList == PL_unitcheckav) {
4689 /* save PL_unitcheckav for compiler */
4690 Perl_av_create_and_push(aTHX_ &PL_unitcheckav_save, MUTABLE_SV(cv));
4701 PL_madskills |= 16384;
4706 PL_madskills &= ~16384;
4709 (void)SvPV_const(atsv, len);
4711 PL_curcop = &PL_compiling;
4712 CopLINE_set(PL_curcop, oldline);
4713 if (paramList == PL_beginav)
4714 sv_catpvs(atsv, "BEGIN failed--compilation aborted");
4716 Perl_sv_catpvf(aTHX_ atsv,
4717 "%s failed--call queue aborted",
4718 paramList == PL_checkav ? "CHECK"
4719 : paramList == PL_initav ? "INIT"
4720 : paramList == PL_unitcheckav ? "UNITCHECK"
4722 while (PL_scopestack_ix > oldscope)
4725 Perl_croak(aTHX_ "%"SVf"", SVfARG(atsv));
4732 /* my_exit() was called */
4733 while (PL_scopestack_ix > oldscope)
4736 PL_curstash = PL_defstash;
4737 PL_curcop = &PL_compiling;
4738 CopLINE_set(PL_curcop, oldline);
4744 PL_curcop = &PL_compiling;
4745 CopLINE_set(PL_curcop, oldline);
4748 PerlIO_printf(Perl_error_log, "panic: restartop\n");
4757 Perl_my_exit(pTHX_ U32 status)
4768 STATUS_EXIT_SET(status);
4775 Perl_my_failure_exit(pTHX)
4779 /* We have been called to fall on our sword. The desired exit code
4780 * should be already set in STATUS_UNIX, but could be shifted over
4781 * by 8 bits. STATUS_UNIX_EXIT_SET will handle the cases where a
4784 * If an error code has not been set, then force the issue.
4786 if (MY_POSIX_EXIT) {
4788 /* According to the die_exit.t tests, if errno is non-zero */
4789 /* It should be used for the error status. */
4791 if (errno == EVMSERR) {
4792 STATUS_NATIVE = vaxc$errno;
4795 /* According to die_exit.t tests, if the child_exit code is */
4796 /* also zero, then we need to exit with a code of 255 */
4797 if ((errno != 0) && (errno < 256))
4798 STATUS_UNIX_EXIT_SET(errno);
4799 else if (STATUS_UNIX < 255) {
4800 STATUS_UNIX_EXIT_SET(255);
4805 /* The exit code could have been set by $? or vmsish which
4806 * means that it may not have fatal set. So convert
4807 * success/warning codes to fatal with out changing
4808 * the POSIX status code. The severity makes VMS native
4809 * status handling work, while UNIX mode programs use the
4810 * the POSIX exit codes.
4812 if ((STATUS_NATIVE & (STS$K_SEVERE|STS$K_ERROR)) == 0) {
4813 STATUS_NATIVE &= STS$M_COND_ID;
4814 STATUS_NATIVE |= STS$K_ERROR | STS$M_INHIB_MSG;
4818 /* Traditionally Perl on VMS always expects a Fatal Error. */
4819 if (vaxc$errno & 1) {
4821 /* So force success status to failure */
4822 if (STATUS_NATIVE & 1)
4827 STATUS_UNIX = EINTR; /* In case something cares */
4832 STATUS_NATIVE = vaxc$errno; /* Should already be this */
4834 /* Encode the severity code */
4835 severity = STATUS_NATIVE & STS$M_SEVERITY;
4836 STATUS_UNIX = (severity ? severity : 1) << 8;
4838 /* Perl expects this to be a fatal error */
4839 if (severity != STS$K_SEVERE)
4848 STATUS_UNIX_SET(errno);
4850 exitstatus = STATUS_UNIX >> 8;
4851 if (exitstatus & 255)
4852 STATUS_UNIX_SET(exitstatus);
4854 STATUS_UNIX_SET(255);
4861 S_my_exit_jump(pTHX)
4866 SvREFCNT_dec(PL_e_script);
4870 POPSTACK_TO(PL_mainstack);
4878 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen)
4881 const char * const p = SvPVX_const(PL_e_script);
4882 const char *nl = strchr(p, '\n');
4884 PERL_UNUSED_ARG(idx);
4885 PERL_UNUSED_ARG(maxlen);
4887 nl = (nl) ? nl+1 : SvEND(PL_e_script);
4889 filter_del(read_e_script);
4892 sv_catpvn(buf_sv, p, nl-p);
4893 sv_chop(PL_e_script, nl);
4899 * c-indentation-style: bsd
4901 * indent-tabs-mode: t
4904 * ex: set ts=8 sts=4 sw=4 noet: