4 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
5 * 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
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 #if defined(PERL_IS_MINIPERL) && !defined(USE_SITECUSTOMIZE)
28 # define USE_SITECUSTOMIZE
32 #define PERL_IN_PERL_C
34 #include "patchlevel.h" /* for local_patches */
41 #ifdef USE_KERN_PROC_PATHNAME
42 # include <sys/sysctl.h>
45 #ifdef USE_NSGETEXECUTABLEPATH
46 # include <mach-o/dyld.h>
49 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
56 char control[CMSG_SPACE(sizeof(int))];
73 #if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
74 char *getenv (char *); /* Usually in <stdlib.h> */
77 static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
79 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
80 # define validate_suid(rsfp) NOOP
82 # define validate_suid(rsfp) S_validate_suid(aTHX_ rsfp)
85 #define CALL_BODY_SUB(myop) \
86 if (PL_op == (myop)) \
87 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); \
91 #define CALL_LIST_BODY(cv) \
92 PUSHMARK(PL_stack_sp); \
93 call_sv(MUTABLE_SV((cv)), G_EVAL|G_DISCARD|G_VOID);
96 S_init_tls_and_interp(PerlInterpreter *my_perl)
100 PERL_SET_INTERP(my_perl);
101 #if defined(USE_ITHREADS)
104 PERL_SET_THX(my_perl);
108 MUTEX_INIT(&PL_dollarzero_mutex);
109 MUTEX_INIT(&PL_my_ctx_mutex);
112 #if defined(USE_ITHREADS)
115 /* This always happens for non-ithreads */
118 PERL_SET_THX(my_perl);
123 /* these implement the PERL_SYS_INIT, PERL_SYS_INIT3, PERL_SYS_TERM macros */
126 Perl_sys_init(int* argc, char*** argv)
130 PERL_ARGS_ASSERT_SYS_INIT;
132 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
133 PERL_UNUSED_ARG(argv);
134 PERL_SYS_INIT_BODY(argc, argv);
138 Perl_sys_init3(int* argc, char*** argv, char*** env)
142 PERL_ARGS_ASSERT_SYS_INIT3;
144 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
145 PERL_UNUSED_ARG(argv);
146 PERL_UNUSED_ARG(env);
147 PERL_SYS_INIT3_BODY(argc, argv, env);
154 if (!PL_veto_cleanup) {
155 PERL_SYS_TERM_BODY();
160 #ifdef PERL_IMPLICIT_SYS
162 perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
163 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
164 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
165 struct IPerlDir* ipD, struct IPerlSock* ipS,
166 struct IPerlProc* ipP)
168 PerlInterpreter *my_perl;
170 PERL_ARGS_ASSERT_PERL_ALLOC_USING;
172 /* Newx() needs interpreter, so call malloc() instead */
173 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
174 S_init_tls_and_interp(my_perl);
175 Zero(my_perl, 1, PerlInterpreter);
185 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
192 =head1 Embedding Functions
194 =for apidoc perl_alloc
196 Allocates a new Perl interpreter. See L<perlembed>.
204 PerlInterpreter *my_perl;
206 /* Newx() needs interpreter, so call malloc() instead */
207 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
209 S_init_tls_and_interp(my_perl);
210 #ifndef PERL_TRACK_MEMPOOL
211 return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter);
213 Zero(my_perl, 1, PerlInterpreter);
214 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
218 #endif /* PERL_IMPLICIT_SYS */
221 =for apidoc perl_construct
223 Initializes a new Perl interpreter. See L<perlembed>.
229 perl_construct(pTHXx)
233 PERL_ARGS_ASSERT_PERL_CONSTRUCT;
237 PL_perl_destruct_level = 1;
239 PERL_UNUSED_ARG(my_perl);
240 if (PL_perl_destruct_level > 0)
243 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
247 SvREADONLY_on(&PL_sv_placeholder);
248 SvREFCNT(&PL_sv_placeholder) = (~(U32)0)/2;
250 PL_sighandlerp = (Sighandler_t) Perl_sighandler;
251 #ifdef PERL_USES_PL_PIDSTATUS
252 PL_pidstatus = newHV();
255 PL_rs = newSVpvs("\n");
265 SET_NUMERIC_STANDARD();
267 #if defined(LOCAL_PATCH_COUNT)
268 PL_localpatches = local_patches; /* For possible -v */
271 #ifdef HAVE_INTERP_INTERN
275 PerlIO_init(aTHX); /* Hook to IO system */
277 PL_fdpid = newAV(); /* for remembering popen pids by fd */
278 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
279 PL_errors = newSVpvs("");
280 sv_setpvs(PERL_DEBUG_PAD(0), ""); /* For regex debugging. */
281 sv_setpvs(PERL_DEBUG_PAD(1), ""); /* ext/re needs these */
282 sv_setpvs(PERL_DEBUG_PAD(2), ""); /* even without DEBUGGING. */
284 /* First entry is a list of empty elements. It needs to be initialised
285 else all hell breaks loose in S_find_uninit_var(). */
286 Perl_av_create_and_push(aTHX_ &PL_regex_padav, newSVpvs(""));
287 PL_regex_pad = AvARRAY(PL_regex_padav);
288 Newxz(PL_stashpad, PL_stashpadmax, HV *);
290 #ifdef USE_REENTRANT_API
291 Perl_reentrant_init(aTHX);
294 /* Note that strtab is a rather special HV. Assumptions are made
295 about not iterating on it, and not adding tie magic to it.
296 It is properly deallocated in perl_destruct() */
299 HvSHAREKEYS_off(PL_strtab); /* mandatory */
300 hv_ksplit(PL_strtab, 512);
302 #if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
303 _dyld_lookup_and_bind
304 ("__environ", (unsigned long *) &environ_pointer, NULL);
308 # ifdef USE_ENVIRON_ARRAY
309 PL_origenviron = environ;
313 /* Use sysconf(_SC_CLK_TCK) if available, if not
314 * available or if the sysconf() fails, use the HZ.
315 * BeOS has those, but returns the wrong value.
316 * The HZ if not originally defined has been by now
317 * been defined as CLK_TCK, if available. */
318 #if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK) && !defined(__BEOS__)
319 PL_clocktick = sysconf(_SC_CLK_TCK);
320 if (PL_clocktick <= 0)
324 PL_stashcache = newHV();
326 PL_patchlevel = newSVpvs("v" PERL_VERSION_STRING);
327 PL_apiversion = newSVpvs("v" PERL_API_VERSION_STRING);
330 if (!PL_mmap_page_size) {
331 #if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
333 SETERRNO(0, SS_NORMAL);
335 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
337 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
339 if ((long) PL_mmap_page_size < 0) {
341 SV * const error = ERRSV;
342 SvUPGRADE(error, SVt_PV);
343 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
346 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
350 # ifdef HAS_GETPAGESIZE
351 PL_mmap_page_size = getpagesize();
353 # if defined(I_SYS_PARAM) && defined(PAGESIZE)
354 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
358 if (PL_mmap_page_size <= 0)
359 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
360 (IV) PL_mmap_page_size);
362 #endif /* HAS_MMAP */
364 #if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
365 PL_timesbase.tms_utime = 0;
366 PL_timesbase.tms_stime = 0;
367 PL_timesbase.tms_cutime = 0;
368 PL_timesbase.tms_cstime = 0;
371 PL_osname = Perl_savepvn(aTHX_ STR_WITH_LEN(OSNAME));
373 PL_registered_mros = newHV();
374 /* Start with 1 bucket, for DFS. It's unlikely we'll need more. */
375 HvMAX(PL_registered_mros) = 0;
381 =for apidoc nothreadhook
383 Stub that provides thread hook for perl_destruct when there are
390 Perl_nothreadhook(pTHX)
396 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
398 Perl_dump_sv_child(pTHX_ SV *sv)
401 const int sock = PL_dumper_fd;
402 const int debug_fd = PerlIO_fileno(Perl_debug_log);
403 union control_un control;
406 struct cmsghdr *cmptr;
408 unsigned char buffer[256];
410 PERL_ARGS_ASSERT_DUMP_SV_CHILD;
412 if(sock == -1 || debug_fd == -1)
415 PerlIO_flush(Perl_debug_log);
417 /* All these shenanigans are to pass a file descriptor over to our child for
418 it to dump out to. We can't let it hold open the file descriptor when it
419 forks, as the file descriptor it will dump to can turn out to be one end
420 of pipe that some other process will wait on for EOF. (So as it would
421 be open, the wait would be forever.) */
423 msg.msg_control = control.control;
424 msg.msg_controllen = sizeof(control.control);
425 /* We're a connected socket so we don't need a destination */
431 cmptr = CMSG_FIRSTHDR(&msg);
432 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
433 cmptr->cmsg_level = SOL_SOCKET;
434 cmptr->cmsg_type = SCM_RIGHTS;
435 *((int *)CMSG_DATA(cmptr)) = 1;
437 vec[0].iov_base = (void*)&sv;
438 vec[0].iov_len = sizeof(sv);
439 got = sendmsg(sock, &msg, 0);
442 perror("Debug leaking scalars parent sendmsg failed");
445 if(got < sizeof(sv)) {
446 perror("Debug leaking scalars parent short sendmsg");
450 /* Return protocol is
452 unsigned char: length of location string (0 for empty)
453 unsigned char*: string (not terminated)
455 vec[0].iov_base = (void*)&returned_errno;
456 vec[0].iov_len = sizeof(returned_errno);
457 vec[1].iov_base = buffer;
460 got = readv(sock, vec, 2);
463 perror("Debug leaking scalars parent read failed");
464 PerlIO_flush(PerlIO_stderr());
467 if(got < sizeof(returned_errno) + 1) {
468 perror("Debug leaking scalars parent short read");
469 PerlIO_flush(PerlIO_stderr());
474 got = read(sock, buffer + 1, *buffer);
476 perror("Debug leaking scalars parent read 2 failed");
477 PerlIO_flush(PerlIO_stderr());
482 perror("Debug leaking scalars parent short read 2");
483 PerlIO_flush(PerlIO_stderr());
488 if (returned_errno || *buffer) {
489 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
490 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
491 returned_errno, strerror(returned_errno));
497 =for apidoc perl_destruct
499 Shuts down a Perl interpreter. See L<perlembed>.
508 VOL signed char destruct_level; /* see possible values in intrpvar.h */
510 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
514 PERL_ARGS_ASSERT_PERL_DESTRUCT;
516 PERL_UNUSED_ARG(my_perl);
519 assert(PL_scopestack_ix == 1);
521 /* wait for all pseudo-forked children to finish */
522 PERL_WAIT_FOR_CHILDREN;
524 destruct_level = PL_perl_destruct_level;
527 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
529 const int i = atoi(s);
530 if (destruct_level < i)
536 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
542 if (PL_endav && !PL_minus_c) {
543 PERL_SET_PHASE(PERL_PHASE_END);
544 call_list(PL_scopestack_ix, PL_endav);
550 assert(PL_scopestack_ix == 0);
552 /* Need to flush since END blocks can produce output */
555 if (PL_threadhook(aTHX)) {
556 /* Threads hook has vetoed further cleanup */
557 PL_veto_cleanup = TRUE;
561 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
562 if (destruct_level != 0) {
563 /* Fork here to create a child. Our child's job is to preserve the
564 state of scalars prior to destruction, so that we can instruct it
565 to dump any scalars that we later find have leaked.
566 There's no subtlety in this code - it assumes POSIX, and it doesn't
570 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
571 perror("Debug leaking scalars socketpair failed");
577 perror("Debug leaking scalars fork failed");
581 /* We are the child */
582 const int sock = fd[1];
583 const int debug_fd = PerlIO_fileno(Perl_debug_log);
586 /* Our success message is an integer 0, and a char 0 */
587 static const char success[sizeof(int) + 1] = {0};
591 /* We need to close all other file descriptors otherwise we end up
592 with interesting hangs, where the parent closes its end of a
593 pipe, and sits waiting for (another) child to terminate. Only
594 that child never terminates, because it never gets EOF, because
595 we also have the far end of the pipe open. We even need to
596 close the debugging fd, because sometimes it happens to be one
597 end of a pipe, and a process is waiting on the other end for
598 EOF. Normally it would be closed at some point earlier in
599 destruction, but if we happen to cause the pipe to remain open,
600 EOF never occurs, and we get an infinite hang. Hence all the
601 games to pass in a file descriptor if it's actually needed. */
603 f = sysconf(_SC_OPEN_MAX);
605 where = "sysconf failed";
616 union control_un control;
619 struct cmsghdr *cmptr;
623 msg.msg_control = control.control;
624 msg.msg_controllen = sizeof(control.control);
625 /* We're a connected socket so we don't need a source */
629 msg.msg_iovlen = sizeof(vec)/sizeof(vec[0]);
631 vec[0].iov_base = (void*)⌖
632 vec[0].iov_len = sizeof(target);
634 got = recvmsg(sock, &msg, 0);
639 where = "recv failed";
642 if(got < sizeof(target)) {
643 where = "short recv";
647 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
651 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
652 where = "wrong cmsg_len";
655 if(cmptr->cmsg_level != SOL_SOCKET) {
656 where = "wrong cmsg_level";
659 if(cmptr->cmsg_type != SCM_RIGHTS) {
660 where = "wrong cmsg_type";
664 got_fd = *(int*)CMSG_DATA(cmptr);
665 /* For our last little bit of trickery, put the file descriptor
666 back into Perl_debug_log, as if we never actually closed it
668 if(got_fd != debug_fd) {
669 if (dup2(got_fd, debug_fd) == -1) {
676 PerlIO_flush(Perl_debug_log);
678 got = write(sock, &success, sizeof(success));
681 where = "write failed";
684 if(got < sizeof(success)) {
685 where = "short write";
692 int send_errno = errno;
693 unsigned char length = (unsigned char) strlen(where);
694 struct iovec failure[3] = {
695 {(void*)&send_errno, sizeof(send_errno)},
697 {(void*)where, length}
699 int got = writev(sock, failure, 3);
700 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
701 in the parent if we try to read from the socketpair after the
702 child has exited, even if there was data to read.
703 So sleep a bit to give the parent a fighting chance of
706 _exit((got == -1) ? errno : 0);
710 PL_dumper_fd = fd[0];
715 /* We must account for everything. */
717 /* Destroy the main CV and syntax tree */
718 /* Set PL_curcop now, because destroying ops can cause new SVs
719 to be generated in Perl_pad_swipe, and when running with
720 -DDEBUG_LEAKING_SCALARS they expect PL_curcop to point to a valid
721 op from which the filename structure member is copied. */
722 PL_curcop = &PL_compiling;
724 /* ensure comppad/curpad to refer to main's pad */
725 if (CvPADLIST(PL_main_cv)) {
726 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
728 op_free(PL_main_root);
731 PL_main_start = NULL;
732 /* note that PL_main_cv isn't usually actually freed at this point,
733 * due to the CvOUTSIDE refs from subs compiled within it. It will
734 * get freed once all the subs are freed in sv_clean_all(), for
735 * destruct_level > 0 */
736 SvREFCNT_dec(PL_main_cv);
738 PERL_SET_PHASE(PERL_PHASE_DESTRUCT);
740 /* Tell PerlIO we are about to tear things apart in case
741 we have layers which are using resources that should
745 PerlIO_destruct(aTHX);
747 if (PL_sv_objcount) {
749 * Try to destruct global references. We do this first so that the
750 * destructors and destructees still exist. Some sv's might remain.
751 * Non-referenced objects are on their own.
757 /* unhook hooks which will soon be, or use, destroyed data */
758 SvREFCNT_dec(PL_warnhook);
760 SvREFCNT_dec(PL_diehook);
763 /* call exit list functions */
764 while (PL_exitlistlen-- > 0)
765 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
767 Safefree(PL_exitlist);
772 SvREFCNT_dec(PL_registered_mros);
774 /* jettison our possibly duplicated environment */
775 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
776 * so we certainly shouldn't free it here
779 #if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
780 if (environ != PL_origenviron && !PL_use_safe_putenv
782 /* only main thread can free environ[0] contents */
783 && PL_curinterp == aTHX
789 for (i = 0; environ[i]; i++)
790 safesysfree(environ[i]);
792 /* Must use safesysfree() when working with environ. */
793 safesysfree(environ);
795 environ = PL_origenviron;
798 #endif /* !PERL_MICRO */
800 if (destruct_level == 0) {
802 DEBUG_P(debprofdump());
804 #if defined(PERLIO_LAYERS)
805 /* No more IO - including error messages ! */
806 PerlIO_cleanup(aTHX);
809 CopFILE_free(&PL_compiling);
811 /* The exit() function will do everything that needs doing. */
816 /* the syntax tree is shared between clones
817 * so op_free(PL_main_root) only ReREFCNT_dec's
818 * REGEXPs in the parent interpreter
819 * we need to manually ReREFCNT_dec for the clones
822 I32 i = AvFILLp(PL_regex_padav);
823 SV **ary = AvARRAY(PL_regex_padav);
826 SvREFCNT_dec(ary[i]);
827 ary[i] = &PL_sv_undef;
830 Safefree(PL_stashpad);
834 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
835 PL_stashcache = NULL;
837 /* loosen bonds of global variables */
839 /* XXX can PL_parser still be non-null here? */
840 if(PL_parser && PL_parser->rsfp) {
841 (void)PerlIO_close(PL_parser->rsfp);
842 PL_parser->rsfp = NULL;
846 Safefree(PL_splitstr);
856 PL_doswitches = FALSE;
857 PL_dowarn = G_WARN_OFF;
858 PL_sawampersand = FALSE; /* must save all match strings */
861 Safefree(PL_inplace);
863 SvREFCNT_dec(PL_patchlevel);
864 SvREFCNT_dec(PL_apiversion);
867 SvREFCNT_dec(PL_e_script);
873 /* magical thingies */
875 SvREFCNT_dec(PL_ofsgv); /* *, */
878 SvREFCNT_dec(PL_ors_sv); /* $\ */
881 SvREFCNT_dec(PL_rs); /* $/ */
884 Safefree(PL_osname); /* $^O */
887 SvREFCNT_dec(PL_statname);
891 /* defgv, aka *_ should be taken care of elsewhere */
894 Safefree(PL_efloatbuf);
898 /* startup and shutdown function lists */
899 SvREFCNT_dec(PL_beginav);
900 SvREFCNT_dec(PL_beginav_save);
901 SvREFCNT_dec(PL_endav);
902 SvREFCNT_dec(PL_checkav);
903 SvREFCNT_dec(PL_checkav_save);
904 SvREFCNT_dec(PL_unitcheckav);
905 SvREFCNT_dec(PL_unitcheckav_save);
906 SvREFCNT_dec(PL_initav);
908 PL_beginav_save = NULL;
911 PL_checkav_save = NULL;
912 PL_unitcheckav = NULL;
913 PL_unitcheckav_save = NULL;
916 /* shortcuts just get cleared */
925 PL_last_in_gv = NULL;
937 SvREFCNT_dec(PL_argvout_stack);
938 PL_argvout_stack = NULL;
940 SvREFCNT_dec(PL_modglobal);
942 SvREFCNT_dec(PL_preambleav);
943 PL_preambleav = NULL;
944 SvREFCNT_dec(PL_subname);
946 #ifdef PERL_USES_PL_PIDSTATUS
947 SvREFCNT_dec(PL_pidstatus);
950 SvREFCNT_dec(PL_toptarget);
952 SvREFCNT_dec(PL_bodytarget);
953 PL_bodytarget = NULL;
954 PL_formtarget = NULL;
956 /* free locale stuff */
957 #ifdef USE_LOCALE_COLLATE
958 Safefree(PL_collation_name);
959 PL_collation_name = NULL;
962 #ifdef USE_LOCALE_NUMERIC
963 Safefree(PL_numeric_name);
964 PL_numeric_name = NULL;
965 SvREFCNT_dec(PL_numeric_radix_sv);
966 PL_numeric_radix_sv = NULL;
969 /* clear utf8 character classes */
970 SvREFCNT_dec(PL_utf8_alnum);
971 SvREFCNT_dec(PL_utf8_alpha);
972 SvREFCNT_dec(PL_utf8_blank);
973 SvREFCNT_dec(PL_utf8_space);
974 SvREFCNT_dec(PL_utf8_graph);
975 SvREFCNT_dec(PL_utf8_digit);
976 SvREFCNT_dec(PL_utf8_upper);
977 SvREFCNT_dec(PL_utf8_lower);
978 SvREFCNT_dec(PL_utf8_print);
979 SvREFCNT_dec(PL_utf8_punct);
980 SvREFCNT_dec(PL_utf8_xdigit);
981 SvREFCNT_dec(PL_utf8_mark);
982 SvREFCNT_dec(PL_utf8_toupper);
983 SvREFCNT_dec(PL_utf8_totitle);
984 SvREFCNT_dec(PL_utf8_tolower);
985 SvREFCNT_dec(PL_utf8_tofold);
986 SvREFCNT_dec(PL_utf8_idstart);
987 SvREFCNT_dec(PL_utf8_idcont);
988 SvREFCNT_dec(PL_utf8_foldclosures);
989 PL_utf8_alnum = NULL;
990 PL_utf8_alpha = NULL;
991 PL_utf8_blank = NULL;
992 PL_utf8_space = NULL;
993 PL_utf8_graph = NULL;
994 PL_utf8_digit = NULL;
995 PL_utf8_upper = NULL;
996 PL_utf8_lower = NULL;
997 PL_utf8_print = NULL;
998 PL_utf8_punct = NULL;
999 PL_utf8_xdigit = NULL;
1000 PL_utf8_mark = NULL;
1001 PL_utf8_toupper = NULL;
1002 PL_utf8_totitle = NULL;
1003 PL_utf8_tolower = NULL;
1004 PL_utf8_tofold = NULL;
1005 PL_utf8_idstart = NULL;
1006 PL_utf8_idcont = NULL;
1007 PL_utf8_foldclosures = NULL;
1009 if (!specialWARN(PL_compiling.cop_warnings))
1010 PerlMemShared_free(PL_compiling.cop_warnings);
1011 PL_compiling.cop_warnings = NULL;
1012 cophh_free(CopHINTHASH_get(&PL_compiling));
1013 CopHINTHASH_set(&PL_compiling, cophh_new_empty());
1014 CopFILE_free(&PL_compiling);
1016 /* Prepare to destruct main symbol table. */
1019 /* break ref loop *:: <=> %:: */
1020 (void)hv_delete(hv, "main::", 6, G_DISCARD);
1023 SvREFCNT_dec(PL_curstname);
1024 PL_curstname = NULL;
1026 /* clear queued errors */
1027 SvREFCNT_dec(PL_errors);
1030 SvREFCNT_dec(PL_isarev);
1033 if (destruct_level >= 2) {
1034 if (PL_scopestack_ix != 0)
1035 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1036 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1037 (long)PL_scopestack_ix);
1038 if (PL_savestack_ix != 0)
1039 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1040 "Unbalanced saves: %ld more saves than restores\n",
1041 (long)PL_savestack_ix);
1042 if (PL_tmps_floor != -1)
1043 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1044 (long)PL_tmps_floor + 1);
1045 if (cxstack_ix != -1)
1046 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1047 (long)cxstack_ix + 1);
1051 SvREFCNT_dec(PL_regex_padav);
1052 PL_regex_padav = NULL;
1053 PL_regex_pad = NULL;
1056 #ifdef PERL_IMPLICIT_CONTEXT
1057 /* the entries in this list are allocated via SV PVX's, so get freed
1058 * in sv_clean_all */
1059 Safefree(PL_my_cxt_list);
1062 /* Now absolutely destruct everything, somehow or other, loops or no. */
1064 /* the 2 is for PL_fdpid and PL_strtab */
1065 while (sv_clean_all() > 2)
1068 AvREAL_off(PL_fdpid); /* no surviving entries */
1069 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
1072 #ifdef HAVE_INTERP_INTERN
1076 /* Destruct the global string table. */
1078 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1079 * so that sv_free() won't fail on them.
1080 * Now that the global string table is using a single hunk of memory
1081 * for both HE and HEK, we either need to explicitly unshare it the
1082 * correct way, or actually free things here.
1085 const I32 max = HvMAX(PL_strtab);
1086 HE * const * const array = HvARRAY(PL_strtab);
1087 HE *hent = array[0];
1090 if (hent && ckWARN_d(WARN_INTERNAL)) {
1091 HE * const next = HeNEXT(hent);
1092 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
1093 "Unbalanced string table refcount: (%ld) for \"%s\"",
1094 (long)hent->he_valu.hent_refcount, HeKEY(hent));
1101 hent = array[riter];
1106 HvARRAY(PL_strtab) = 0;
1107 HvTOTALKEYS(PL_strtab) = 0;
1109 SvREFCNT_dec(PL_strtab);
1112 /* free the pointer tables used for cloning */
1113 ptr_table_free(PL_ptr_table);
1114 PL_ptr_table = (PTR_TBL_t*)NULL;
1117 /* free special SVs */
1119 SvREFCNT(&PL_sv_yes) = 0;
1120 sv_clear(&PL_sv_yes);
1121 SvANY(&PL_sv_yes) = NULL;
1122 SvFLAGS(&PL_sv_yes) = 0;
1124 SvREFCNT(&PL_sv_no) = 0;
1125 sv_clear(&PL_sv_no);
1126 SvANY(&PL_sv_no) = NULL;
1127 SvFLAGS(&PL_sv_no) = 0;
1131 for (i=0; i<=2; i++) {
1132 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1133 sv_clear(PERL_DEBUG_PAD(i));
1134 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1135 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1139 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
1140 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
1142 #ifdef DEBUG_LEAKING_SCALARS
1143 if (PL_sv_count != 0) {
1148 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
1149 svend = &sva[SvREFCNT(sva)];
1150 for (sv = sva + 1; sv < svend; ++sv) {
1151 if (SvTYPE(sv) != (svtype)SVTYPEMASK) {
1152 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
1154 " refcnt=%"UVuf pTHX__FORMAT "\n"
1155 "\tallocated at %s:%d %s %s (parent 0x%"UVxf");"
1157 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1159 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1161 sv->sv_debug_inpad ? "for" : "by",
1162 sv->sv_debug_optype ?
1163 PL_op_name[sv->sv_debug_optype]: "(none)",
1164 PTR2UV(sv->sv_debug_parent),
1167 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1168 Perl_dump_sv_child(aTHX_ sv);
1174 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1178 /* Wait for up to 4 seconds for child to terminate.
1179 This seems to be the least effort way of timing out on reaping
1181 struct timeval waitfor = {4, 0};
1182 int sock = PL_dumper_fd;
1186 FD_SET(sock, &rset);
1187 select(sock + 1, &rset, NULL, NULL, &waitfor);
1188 waitpid(child, &status, WNOHANG);
1193 #ifdef DEBUG_LEAKING_SCALARS_ABORT
1199 #if defined(PERLIO_LAYERS)
1200 /* No more IO - including error messages ! */
1201 PerlIO_cleanup(aTHX);
1204 /* sv_undef needs to stay immortal until after PerlIO_cleanup
1205 as currently layers use it rather than NULL as a marker
1206 for no arg - and will try and SvREFCNT_dec it.
1208 SvREFCNT(&PL_sv_undef) = 0;
1209 SvREADONLY_off(&PL_sv_undef);
1211 Safefree(PL_origfilename);
1212 PL_origfilename = NULL;
1213 Safefree(PL_reg_curpm);
1214 Safefree(PL_reg_poscache);
1215 free_tied_hv_pool();
1216 Safefree(PL_op_mask);
1217 Safefree(PL_psig_name);
1218 PL_psig_name = (SV**)NULL;
1219 PL_psig_ptr = (SV**)NULL;
1221 /* We need to NULL PL_psig_pend first, so that
1222 signal handlers know not to use it */
1223 int *psig_save = PL_psig_pend;
1224 PL_psig_pend = (int*)NULL;
1225 Safefree(psig_save);
1229 PL_tainting = FALSE;
1230 PL_taint_warn = FALSE;
1231 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
1234 DEBUG_P(debprofdump());
1236 #ifdef USE_REENTRANT_API
1237 Perl_reentrant_free(aTHX);
1242 while (PL_regmatch_slab) {
1243 regmatch_slab *s = PL_regmatch_slab;
1244 PL_regmatch_slab = PL_regmatch_slab->next;
1248 /* As the absolutely last thing, free the non-arena SV for mess() */
1251 /* we know that type == SVt_PVMG */
1253 /* it could have accumulated taint magic */
1256 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1257 moremagic = mg->mg_moremagic;
1258 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1260 Safefree(mg->mg_ptr);
1264 /* we know that type >= SVt_PV */
1265 SvPV_free(PL_mess_sv);
1266 Safefree(SvANY(PL_mess_sv));
1267 Safefree(PL_mess_sv);
1274 =for apidoc perl_free
1276 Releases a Perl interpreter. See L<perlembed>.
1286 PERL_ARGS_ASSERT_PERL_FREE;
1288 if (PL_veto_cleanup)
1291 #ifdef PERL_TRACK_MEMPOOL
1294 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1295 * value as we're probably hunting memory leaks then
1297 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
1298 if (!s || atoi(s) == 0) {
1299 const U32 old_debug = PL_debug;
1300 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1301 thread at thread exit. */
1303 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1304 "free this thread's memory\n");
1305 PL_debug &= ~ DEBUG_m_FLAG;
1307 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
1308 safesysfree(sTHX + (char *)(aTHXx->Imemory_debug_header.next));
1309 PL_debug = old_debug;
1314 #if defined(WIN32) || defined(NETWARE)
1315 # if defined(PERL_IMPLICIT_SYS)
1318 void *host = nw_internal_host;
1320 void *host = w32_internal_host;
1322 PerlMem_free(aTHXx);
1324 nw_delete_internal_host(host);
1326 win32_delete_internal_host(host);
1330 PerlMem_free(aTHXx);
1333 PerlMem_free(aTHXx);
1337 #if defined(USE_ITHREADS)
1338 /* provide destructors to clean up the thread key when libperl is unloaded */
1339 #ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1341 #if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
1342 #pragma fini "perl_fini"
1343 #elif defined(__sun) && !defined(__GNUC__)
1344 #pragma fini (perl_fini)
1348 #if defined(__GNUC__)
1349 __attribute__((destructor))
1354 if (PL_curinterp && !PL_veto_cleanup)
1359 #endif /* THREADS */
1362 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
1365 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1366 PL_exitlist[PL_exitlistlen].fn = fn;
1367 PL_exitlist[PL_exitlistlen].ptr = ptr;
1372 S_set_caret_X(pTHX) {
1374 GV* tmpgv = gv_fetchpvs("\030", GV_ADD|GV_NOTQUAL, SVt_PV); /* $^X */
1376 SV *const caret_x = GvSV(tmpgv);
1378 sv_setpv(caret_x, os2_execname(aTHX));
1380 # ifdef USE_KERN_PROC_PATHNAME
1385 mib[2] = KERN_PROC_PATHNAME;
1388 if (sysctl(mib, 4, NULL, &size, NULL, 0) == 0
1389 && size > 0 && size < MAXPATHLEN * MAXPATHLEN) {
1390 sv_grow(caret_x, size);
1392 if (sysctl(mib, 4, SvPVX(caret_x), &size, NULL, 0) == 0
1394 SvPOK_only(caret_x);
1395 SvCUR_set(caret_x, size - 1);
1400 # elif defined(USE_NSGETEXECUTABLEPATH)
1402 uint32_t size = sizeof(buf);
1404 _NSGetExecutablePath(buf, &size);
1405 if (size < MAXPATHLEN * MAXPATHLEN) {
1406 sv_grow(caret_x, size);
1407 if (_NSGetExecutablePath(SvPVX(caret_x), &size) == 0) {
1408 char *const tidied = realpath(SvPVX(caret_x), NULL);
1410 sv_setpv(caret_x, tidied);
1413 SvPOK_only(caret_x);
1414 SvCUR_set(caret_x, size);
1419 # elif defined(HAS_PROCSELFEXE)
1420 char buf[MAXPATHLEN];
1421 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1423 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1424 includes a spurious NUL which will cause $^X to fail in system
1425 or backticks (this will prevent extensions from being built and
1426 many tests from working). readlink is not meant to add a NUL.
1427 Normal readlink works fine.
1429 if (len > 0 && buf[len-1] == '\0') {
1433 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1434 returning the text "unknown" from the readlink rather than the path
1435 to the executable (or returning an error from the readlink). Any
1436 valid path has a '/' in it somewhere, so use that to validate the
1437 result. See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1439 if (len > 0 && memchr(buf, '/', len)) {
1440 sv_setpvn(caret_x, buf, len);
1444 /* Fallback to this: */
1445 sv_setpv(caret_x, PL_origargv[0]);
1451 =for apidoc perl_parse
1453 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1458 #define SET_CURSTASH(newstash) \
1459 if (PL_curstash != newstash) { \
1460 SvREFCNT_dec(PL_curstash); \
1461 PL_curstash = (HV *)SvREFCNT_inc(newstash); \
1465 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
1472 PERL_ARGS_ASSERT_PERL_PARSE;
1473 #ifndef MULTIPLICITY
1474 PERL_UNUSED_ARG(my_perl);
1477 #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
1478 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
1479 * This MUST be done before any hash stores or fetches take place.
1480 * If you set PL_rehash_seed (and presumably also PL_rehash_seed_set)
1481 * yourself, it is your responsibility to provide a good random seed!
1482 * You can also define PERL_HASH_SEED in compile time, see hv.h. */
1483 if (!PL_rehash_seed_set)
1484 PL_rehash_seed = get_hash_seed();
1486 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
1488 if (s && (atoi(s) == 1))
1489 PerlIO_printf(Perl_debug_log, "HASH_SEED = %"UVuf"\n", PL_rehash_seed);
1491 #endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1496 if (PL_origalen != 0) {
1497 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1500 /* Set PL_origalen be the sum of the contiguous argv[]
1501 * elements plus the size of the env in case that it is
1502 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
1503 * as the maximum modifiable length of $0. In the worst case
1504 * the area we are able to modify is limited to the size of
1505 * the original argv[0]. (See below for 'contiguous', though.)
1507 const char *s = NULL;
1510 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
1511 /* Do the mask check only if the args seem like aligned. */
1513 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1515 /* See if all the arguments are contiguous in memory. Note
1516 * that 'contiguous' is a loose term because some platforms
1517 * align the argv[] and the envp[]. If the arguments look
1518 * like non-aligned, assume that they are 'strictly' or
1519 * 'traditionally' contiguous. If the arguments look like
1520 * aligned, we just check that they are within aligned
1521 * PTRSIZE bytes. As long as no system has something bizarre
1522 * like the argv[] interleaved with some other data, we are
1523 * fine. (Did I just evoke Murphy's Law?) --jhi */
1524 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1526 for (i = 1; i < PL_origargc; i++) {
1527 if ((PL_origargv[i] == s + 1
1529 || PL_origargv[i] == s + 2
1534 (PL_origargv[i] > s &&
1536 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1547 #ifndef PERL_USE_SAFE_PUTENV
1548 /* Can we grab env area too to be used as the area for $0? */
1549 if (s && PL_origenviron && !PL_use_safe_putenv) {
1550 if ((PL_origenviron[0] == s + 1)
1553 (PL_origenviron[0] > s &&
1554 PL_origenviron[0] <=
1555 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1558 #ifndef OS2 /* ENVIRON is read by the kernel too. */
1559 s = PL_origenviron[0];
1562 my_setenv("NoNe SuCh", NULL);
1563 /* Force copy of environment. */
1564 for (i = 1; PL_origenviron[i]; i++) {
1565 if (PL_origenviron[i] == s + 1
1568 (PL_origenviron[i] > s &&
1569 PL_origenviron[i] <=
1570 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1573 s = PL_origenviron[i];
1581 #endif /* !defined(PERL_USE_SAFE_PUTENV) */
1583 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
1588 /* Come here if running an undumped a.out. */
1590 PL_origfilename = savepv(argv[0]);
1591 PL_do_undump = FALSE;
1592 cxstack_ix = -1; /* start label stack again */
1594 assert (!PL_tainted);
1596 S_set_caret_X(aTHX);
1598 init_postdump_symbols(argc,argv,env);
1603 op_free(PL_main_root);
1604 PL_main_root = NULL;
1606 PL_main_start = NULL;
1607 SvREFCNT_dec(PL_main_cv);
1611 oldscope = PL_scopestack_ix;
1612 PL_dowarn = G_WARN_OFF;
1617 parse_body(env,xsinit);
1618 if (PL_unitcheckav) {
1619 call_list(oldscope, PL_unitcheckav);
1622 PERL_SET_PHASE(PERL_PHASE_CHECK);
1623 call_list(oldscope, PL_checkav);
1631 /* my_exit() was called */
1632 while (PL_scopestack_ix > oldscope)
1635 SET_CURSTASH(PL_defstash);
1636 if (PL_unitcheckav) {
1637 call_list(oldscope, PL_unitcheckav);
1640 PERL_SET_PHASE(PERL_PHASE_CHECK);
1641 call_list(oldscope, PL_checkav);
1646 PerlIO_printf(Perl_error_log, "panic: top_env\n");
1654 /* This needs to stay in perl.c, as perl.c is compiled with different flags for
1655 miniperl, and we need to see those flags reflected in the values here. */
1657 /* What this returns is subject to change. Use the public interface in Config.
1660 S_Internals_V(pTHX_ CV *cv)
1663 #ifdef LOCAL_PATCH_COUNT
1664 const int local_patch_count = LOCAL_PATCH_COUNT;
1666 const int local_patch_count = 0;
1668 const int entries = 3 + local_patch_count;
1670 static char non_bincompat_options[] =
1677 # ifdef PERL_DISABLE_PMC
1680 # ifdef PERL_DONT_CREATE_GVSV
1681 " PERL_DONT_CREATE_GVSV"
1683 # ifdef PERL_EXTERNAL_GLOB
1684 " PERL_EXTERNAL_GLOB"
1686 # ifdef PERL_IS_MINIPERL
1689 # ifdef PERL_MALLOC_WRAP
1692 # ifdef PERL_MEM_LOG
1695 # ifdef PERL_MEM_LOG_NOIMPL
1696 " PERL_MEM_LOG_NOIMPL"
1698 # ifdef PERL_PRESERVE_IVUV
1699 " PERL_PRESERVE_IVUV"
1701 # ifdef PERL_RELOCATABLE_INCPUSH
1702 " PERL_RELOCATABLE_INCPUSH"
1704 # ifdef PERL_USE_DEVEL
1707 # ifdef PERL_USE_SAFE_PUTENV
1708 " PERL_USE_SAFE_PUTENV"
1710 # ifdef UNLINK_ALL_VERSIONS
1711 " UNLINK_ALL_VERSIONS"
1713 # ifdef USE_ATTRIBUTES_FOR_PERLIO
1714 " USE_ATTRIBUTES_FOR_PERLIO"
1716 # ifdef USE_FAST_STDIO
1722 # ifdef USE_LOCALE_CTYPE
1725 # ifdef USE_PERL_ATOF
1728 # ifdef USE_SITECUSTOMIZE
1729 " USE_SITECUSTOMIZE"
1732 PERL_UNUSED_ARG(cv);
1733 PERL_UNUSED_ARG(items);
1735 EXTEND(SP, entries);
1737 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1738 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1739 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1743 PUSHs(Perl_newSVpvn_flags(aTHX_
1744 STR_WITH_LEN("Compiled at " __DATE__ " " __TIME__),
1747 PUSHs(Perl_newSVpvn_flags(aTHX_ STR_WITH_LEN("Compiled on " __DATE__),
1751 PUSHs(&PL_sv_undef);
1754 for (i = 1; i <= local_patch_count; i++) {
1755 /* This will be an undef, if PL_localpatches[i] is NULL. */
1756 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1762 #define INCPUSH_UNSHIFT 0x01
1763 #define INCPUSH_ADD_OLD_VERS 0x02
1764 #define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1765 #define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1766 #define INCPUSH_NOT_BASEDIR 0x10
1767 #define INCPUSH_CAN_RELOCATE 0x20
1768 #define INCPUSH_ADD_SUB_DIRS \
1769 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
1772 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
1776 int argc = PL_origargc;
1777 char **argv = PL_origargv;
1778 const char *scriptname = NULL;
1779 VOL bool dosearch = FALSE;
1781 bool doextract = FALSE;
1782 const char *cddir = NULL;
1783 #ifdef USE_SITECUSTOMIZE
1784 bool minus_f = FALSE;
1786 SV *linestr_sv = NULL;
1787 bool add_read_e_script = FALSE;
1788 U32 lex_start_flags = 0;
1790 PERL_SET_PHASE(PERL_PHASE_START);
1796 for (argc--,argv++; argc > 0; argc--,argv++) {
1797 if (argv[0][0] != '-' || !argv[0][1])
1803 #ifndef PERL_STRICT_CR
1827 if ((s = moreswitches(s)))
1832 CHECK_MALLOC_TOO_LATE_FOR('t');
1833 if( !PL_tainting ) {
1834 PL_taint_warn = TRUE;
1840 CHECK_MALLOC_TOO_LATE_FOR('T');
1842 PL_taint_warn = FALSE;
1850 forbid_setid('e', FALSE);
1852 PL_e_script = newSVpvs("");
1853 add_read_e_script = TRUE;
1856 sv_catpv(PL_e_script, s);
1858 sv_catpv(PL_e_script, argv[1]);
1862 Perl_croak(aTHX_ "No code specified for -%c", c);
1863 sv_catpvs(PL_e_script, "\n");
1867 #ifdef USE_SITECUSTOMIZE
1873 case 'I': /* -I handled both here and in moreswitches() */
1874 forbid_setid('I', FALSE);
1875 if (!*++s && (s=argv[1]) != NULL) {
1879 STRLEN len = strlen(s);
1880 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
1883 Perl_croak(aTHX_ "No directory specified for -I");
1886 forbid_setid('S', FALSE);
1895 opts_prog = newSVpvs("use Config; Config::_V()");
1899 opts_prog = Perl_newSVpvf(aTHX_
1900 "use Config; Config::config_vars(qw%c%s%c)",
1904 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
1905 /* don't look for script or read stdin */
1906 scriptname = BIT_BUCKET;
1918 if (!*++s || isSPACE(*s)) {
1922 /* catch use of gnu style long options.
1923 Both of these exit immediately. */
1924 if (strEQ(s, "version"))
1926 if (strEQ(s, "help"))
1931 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1942 #ifndef SECURE_INTERNAL_GETENV
1945 (s = PerlEnv_getenv("PERL5OPT")))
1949 if (*s == '-' && *(s+1) == 'T') {
1950 CHECK_MALLOC_TOO_LATE_FOR('T');
1952 PL_taint_warn = FALSE;
1955 char *popt_copy = NULL;
1968 if (!strchr("CDIMUdmtwW", *s))
1969 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
1973 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
1974 s = popt_copy + (s - d);
1982 if( !PL_tainting ) {
1983 PL_taint_warn = TRUE;
1994 /* Set $^X early so that it can be used for relocatable paths in @INC */
1995 /* and for SITELIB_EXP in USE_SITECUSTOMIZE */
1996 assert (!PL_tainted);
1998 S_set_caret_X(aTHX);
2001 #if defined(USE_SITECUSTOMIZE)
2003 /* The games with local $! are to avoid setting errno if there is no
2004 sitecustomize script. "q%c...%c", 0, ..., 0 becomes "q\0...\0",
2005 ie a q() operator with a NUL byte as a the delimiter. This avoids
2006 problems with pathnames containing (say) ' */
2007 # ifdef PERL_IS_MINIPERL
2008 AV *const inc = GvAV(PL_incgv);
2009 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
2012 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2014 "BEGIN { do {local $!; -f q%c%"SVf"/buildcustomize.pl%c} && do q%c%"SVf"/buildcustomize.pl%c }",
2019 /* SITELIB_EXP is a function call on Win32. */
2020 const char *const raw_sitelib = SITELIB_EXP;
2022 /* process .../.. if PERL_RELOCATABLE_INC is defined */
2023 SV *sitelib_sv = mayberelocate(raw_sitelib, strlen(raw_sitelib),
2024 INCPUSH_CAN_RELOCATE);
2025 const char *const sitelib = SvPVX(sitelib_sv);
2026 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2028 "BEGIN { do {local $!; -f q%c%s/sitecustomize.pl%c} && do q%c%s/sitecustomize.pl%c }",
2031 assert (SvREFCNT(sitelib_sv) == 1);
2032 SvREFCNT_dec(sitelib_sv);
2039 scriptname = argv[0];
2042 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2044 else if (scriptname == NULL) {
2046 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
2052 assert (!PL_tainted);
2056 bool suidscript = FALSE;
2058 rsfp = open_script(scriptname, dosearch, &suidscript);
2060 rsfp = PerlIO_stdin();
2061 lex_start_flags = LEX_DONT_CLOSE_RSFP;
2064 validate_suid(rsfp);
2067 # if defined(SIGCHLD) || defined(SIGCLD)
2070 # define SIGCHLD SIGCLD
2072 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2073 if (sigstate == (Sighandler_t) SIG_IGN) {
2074 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2075 "Can't ignore signal CHLD, forcing to default");
2076 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2084 /* This will croak if suidscript is true, as -x cannot be used with
2086 forbid_setid('x', suidscript);
2087 /* Hence you can't get here if suidscript is true */
2089 linestr_sv = newSV_type(SVt_PV);
2090 lex_start_flags |= LEX_START_COPIED;
2091 find_beginning(linestr_sv, rsfp);
2092 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2093 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2097 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
2098 CvUNIQUE_on(PL_compcv);
2100 CvPADLIST(PL_compcv) = pad_new(0);
2102 PL_isarev = newHV();
2105 boot_core_UNIVERSAL();
2107 newXS("Internals::V", S_Internals_V, __FILE__);
2110 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
2112 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC) || defined(SYMBIAN)
2118 # ifdef HAS_SOCKS5_INIT
2119 socks5_init(argv[0]);
2125 init_predump_symbols();
2126 /* init_postdump_symbols not currently designed to be called */
2127 /* more than once (ENV isn't cleared first, for example) */
2128 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
2130 init_postdump_symbols(argc,argv,env);
2132 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2133 * or explicitly in some platforms.
2134 * locale.c:Perl_init_i18nl10n() if the environment
2135 * look like the user wants to use UTF-8. */
2136 #if defined(__SYMBIAN32__)
2137 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2139 # ifndef PERL_IS_MINIPERL
2141 /* Requires init_predump_symbols(). */
2142 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
2147 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
2148 * and the default open disciplines. */
2149 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2150 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2152 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2153 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2154 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2156 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2157 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2158 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2160 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2161 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
2162 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2164 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2165 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2168 sv_setpvs(sv, ":utf8\0:utf8");
2170 sv_setpvs(sv, ":utf8\0");
2173 sv_setpvs(sv, "\0:utf8");
2182 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2183 if (strEQ(s, "unsafe"))
2184 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2185 else if (strEQ(s, "safe"))
2186 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2188 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2196 (s = PerlEnv_getenv("PERL_XMLDUMP"))) {
2200 PL_xmlfp = PerlIO_stdout();
2202 PL_xmlfp = PerlIO_open(s, "w");
2204 Perl_croak(aTHX_ "Can't open %s", s);
2206 my_setenv("PERL_XMLDUMP", NULL); /* hide from subprocs */
2212 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2213 PL_madskills = atoi(s);
2214 my_setenv("PERL_MADSKILLS", NULL); /* hide from subprocs */
2219 lex_start(linestr_sv, rsfp, lex_start_flags);
2221 SvREFCNT_dec(linestr_sv);
2223 PL_subname = newSVpvs("main");
2225 if (add_read_e_script)
2226 filter_add(read_e_script, NULL);
2228 /* now parse the script */
2230 SETERRNO(0,SS_NORMAL);
2231 if (yyparse(GRAMPROG) || PL_parser->error_count) {
2233 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
2235 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
2239 CopLINE_set(PL_curcop, 0);
2240 SET_CURSTASH(PL_defstash);
2242 SvREFCNT_dec(PL_e_script);
2250 SAVECOPFILE(PL_curcop);
2251 SAVECOPLINE(PL_curcop);
2252 gv_check(PL_defstash);
2261 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2262 dump_mstats("after compilation:");
2267 PL_restartjmpenv = NULL;
2273 =for apidoc perl_run
2275 Tells a Perl interpreter to run. See L<perlembed>.
2288 PERL_ARGS_ASSERT_PERL_RUN;
2289 #ifndef MULTIPLICITY
2290 PERL_UNUSED_ARG(my_perl);
2293 oldscope = PL_scopestack_ix;
2301 cxstack_ix = -1; /* start context stack again */
2303 case 0: /* normal completion */
2307 case 2: /* my_exit() */
2308 while (PL_scopestack_ix > oldscope)
2311 SET_CURSTASH(PL_defstash);
2312 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
2313 PL_endav && !PL_minus_c) {
2314 PERL_SET_PHASE(PERL_PHASE_END);
2315 call_list(oldscope, PL_endav);
2318 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2319 dump_mstats("after execution: ");
2325 POPSTACK_TO(PL_mainstack);
2328 PerlIO_printf(Perl_error_log, "panic: restartop in perl_run\n");
2339 S_run_body(pTHX_ I32 oldscope)
2342 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
2343 PL_sawampersand ? "Enabling" : "Omitting"));
2345 if (!PL_restartop) {
2349 exit(0); /* less likely to core dump than my_exit(0) */
2353 if (DEBUG_x_TEST || DEBUG_B_TEST)
2354 dump_all_perl(!DEBUG_B_TEST);
2356 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
2360 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
2363 if (PERLDB_SINGLE && PL_DBsingle)
2364 sv_setiv(PL_DBsingle, 1);
2366 PERL_SET_PHASE(PERL_PHASE_INIT);
2367 call_list(oldscope, PL_initav);
2369 #ifdef PERL_DEBUG_READONLY_OPS
2370 if (PL_main_root && PL_main_root->op_slabbed)
2371 Slab_to_ro(OpSLAB(PL_main_root));
2377 PERL_SET_PHASE(PERL_PHASE_RUN);
2380 PL_restartjmpenv = NULL;
2381 PL_op = PL_restartop;
2385 else if (PL_main_start) {
2386 CvDEPTH(PL_main_cv) = 1;
2387 PL_op = PL_main_start;
2391 assert(0); /* NOTREACHED */
2395 =head1 SV Manipulation Functions
2397 =for apidoc p||get_sv
2399 Returns the SV of the specified Perl scalar. C<flags> are passed to
2400 C<gv_fetchpv>. If C<GV_ADD> is set and the
2401 Perl variable does not exist then it will be created. If C<flags> is zero
2402 and the variable does not exist then NULL is returned.
2408 Perl_get_sv(pTHX_ const char *name, I32 flags)
2412 PERL_ARGS_ASSERT_GET_SV;
2414 gv = gv_fetchpv(name, flags, SVt_PV);
2421 =head1 Array Manipulation Functions
2423 =for apidoc p||get_av
2425 Returns the AV of the specified Perl global or package array with the given
2426 name (so it won't work on lexical variables). C<flags> are passed
2427 to C<gv_fetchpv>. If C<GV_ADD> is set and the
2428 Perl variable does not exist then it will be created. If C<flags> is zero
2429 and the variable does not exist then NULL is returned.
2431 Perl equivalent: C<@{"$name"}>.
2437 Perl_get_av(pTHX_ const char *name, I32 flags)
2439 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
2441 PERL_ARGS_ASSERT_GET_AV;
2451 =head1 Hash Manipulation Functions
2453 =for apidoc p||get_hv
2455 Returns the HV of the specified Perl hash. C<flags> are passed to
2456 C<gv_fetchpv>. If C<GV_ADD> is set and the
2457 Perl variable does not exist then it will be created. If C<flags> is zero
2458 and the variable does not exist then NULL is returned.
2464 Perl_get_hv(pTHX_ const char *name, I32 flags)
2466 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
2468 PERL_ARGS_ASSERT_GET_HV;
2478 =head1 CV Manipulation Functions
2480 =for apidoc p||get_cvn_flags
2482 Returns the CV of the specified Perl subroutine. C<flags> are passed to
2483 C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2484 exist then it will be declared (which has the same effect as saying
2485 C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2486 then NULL is returned.
2488 =for apidoc p||get_cv
2490 Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
2496 Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
2498 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
2500 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2502 /* XXX this is probably not what they think they're getting.
2503 * It has the same effect as "sub name;", i.e. just a forward
2505 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
2506 return newSTUB(gv,0);
2513 /* Nothing in core calls this now, but we can't replace it with a macro and
2514 move it to mathoms.c as a macro would evaluate name twice. */
2516 Perl_get_cv(pTHX_ const char *name, I32 flags)
2518 PERL_ARGS_ASSERT_GET_CV;
2520 return get_cvn_flags(name, strlen(name), flags);
2523 /* Be sure to refetch the stack pointer after calling these routines. */
2527 =head1 Callback Functions
2529 =for apidoc p||call_argv
2531 Performs a callback to the specified named and package-scoped Perl subroutine
2532 with C<argv> (a NULL-terminated array of strings) as arguments. See L<perlcall>.
2534 Approximate Perl equivalent: C<&{"$sub_name"}(@$argv)>.
2540 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
2542 /* See G_* flags in cop.h */
2543 /* null terminated arg list */
2548 PERL_ARGS_ASSERT_CALL_ARGV;
2553 mXPUSHs(newSVpv(*argv,0));
2558 return call_pv(sub_name, flags);
2562 =for apidoc p||call_pv
2564 Performs a callback to the specified Perl sub. See L<perlcall>.
2570 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
2571 /* name of the subroutine */
2572 /* See G_* flags in cop.h */
2574 PERL_ARGS_ASSERT_CALL_PV;
2576 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
2580 =for apidoc p||call_method
2582 Performs a callback to the specified Perl method. The blessed object must
2583 be on the stack. See L<perlcall>.
2589 Perl_call_method(pTHX_ const char *methname, I32 flags)
2590 /* name of the subroutine */
2591 /* See G_* flags in cop.h */
2594 PERL_ARGS_ASSERT_CALL_METHOD;
2596 len = strlen(methname);
2598 /* XXX: sv_2mortal(newSVpvn_share(methname, len)) can be faster */
2599 return call_sv(newSVpvn_flags(methname, len, SVs_TEMP), flags | G_METHOD);
2602 /* May be called with any of a CV, a GV, or an SV containing the name. */
2604 =for apidoc p||call_sv
2606 Performs a callback to the Perl sub whose name is in the SV. See
2613 Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
2614 /* See G_* flags in cop.h */
2617 LOGOP myop; /* fake syntax tree node */
2622 bool oldcatch = CATCH_GET;
2624 OP* const oldop = PL_op;
2627 PERL_ARGS_ASSERT_CALL_SV;
2629 if (flags & G_DISCARD) {
2633 if (!(flags & G_WANT)) {
2634 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2639 Zero(&myop, 1, LOGOP);
2640 myop.op_next = NULL;
2641 if (!(flags & G_NOARGS))
2642 myop.op_flags |= OPf_STACKED;
2643 myop.op_flags |= OP_GIMME_REVERSE(flags);
2647 EXTEND(PL_stack_sp, 1);
2648 *++PL_stack_sp = sv;
2650 oldscope = PL_scopestack_ix;
2652 if (PERLDB_SUB && PL_curstash != PL_debstash
2653 /* Handle first BEGIN of -d. */
2654 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
2655 /* Try harder, since this may have been a sighandler, thus
2656 * curstash may be meaningless. */
2657 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
2658 && !(flags & G_NODEBUG))
2659 PL_op->op_private |= OPpENTERSUB_DB;
2661 if (flags & G_METHOD) {
2662 Zero(&method_op, 1, UNOP);
2663 method_op.op_next = PL_op;
2664 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2665 method_op.op_type = OP_METHOD;
2666 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
2667 myop.op_type = OP_ENTERSUB;
2668 PL_op = (OP*)&method_op;
2671 if (!(flags & G_EVAL)) {
2673 CALL_BODY_SUB((OP*)&myop);
2674 retval = PL_stack_sp - (PL_stack_base + oldmark);
2675 CATCH_SET(oldcatch);
2678 myop.op_other = (OP*)&myop;
2680 create_eval_scope(flags|G_FAKINGEVAL);
2688 CALL_BODY_SUB((OP*)&myop);
2689 retval = PL_stack_sp - (PL_stack_base + oldmark);
2690 if (!(flags & G_KEEPERR)) {
2698 /* my_exit() was called */
2699 SET_CURSTASH(PL_defstash);
2703 assert(0); /* NOTREACHED */
2706 PL_restartjmpenv = NULL;
2707 PL_op = PL_restartop;
2711 PL_stack_sp = PL_stack_base + oldmark;
2712 if ((flags & G_WANT) == G_ARRAY)
2716 *++PL_stack_sp = &PL_sv_undef;
2721 if (PL_scopestack_ix > oldscope)
2722 delete_eval_scope();
2726 if (flags & G_DISCARD) {
2727 PL_stack_sp = PL_stack_base + oldmark;
2736 /* Eval a string. The G_EVAL flag is always assumed. */
2739 =for apidoc p||eval_sv
2741 Tells Perl to C<eval> the string in the SV. It supports the same flags
2742 as C<call_sv>, with the obvious exception of G_EVAL. See L<perlcall>.
2748 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
2750 /* See G_* flags in cop.h */
2754 UNOP myop; /* fake syntax tree node */
2755 VOL I32 oldmark = SP - PL_stack_base;
2758 OP* const oldop = PL_op;
2761 PERL_ARGS_ASSERT_EVAL_SV;
2763 if (flags & G_DISCARD) {
2770 Zero(PL_op, 1, UNOP);
2771 EXTEND(PL_stack_sp, 1);
2772 *++PL_stack_sp = sv;
2774 if (!(flags & G_NOARGS))
2775 myop.op_flags = OPf_STACKED;
2776 myop.op_next = NULL;
2777 myop.op_type = OP_ENTEREVAL;
2778 myop.op_flags |= OP_GIMME_REVERSE(flags);
2779 if (flags & G_KEEPERR)
2780 myop.op_flags |= OPf_SPECIAL;
2781 if (PL_reg_state.re_reparsing)
2782 myop.op_private = OPpEVAL_COPHH;
2784 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2785 * before a PUSHEVAL, which corrupts the stack after a croak */
2786 TAINT_PROPER("eval_sv()");
2792 if (PL_op == (OP*)(&myop)) {
2793 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2795 goto fail; /* failed in compilation */
2798 retval = PL_stack_sp - (PL_stack_base + oldmark);
2799 if (!(flags & G_KEEPERR)) {
2807 /* my_exit() was called */
2808 SET_CURSTASH(PL_defstash);
2812 assert(0); /* NOTREACHED */
2815 PL_restartjmpenv = NULL;
2816 PL_op = PL_restartop;
2821 PL_stack_sp = PL_stack_base + oldmark;
2822 if ((flags & G_WANT) == G_ARRAY)
2826 *++PL_stack_sp = &PL_sv_undef;
2832 if (flags & G_DISCARD) {
2833 PL_stack_sp = PL_stack_base + oldmark;
2843 =for apidoc p||eval_pv
2845 Tells Perl to C<eval> the given string and return an SV* result.
2851 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
2855 SV* sv = newSVpv(p, 0);
2857 PERL_ARGS_ASSERT_EVAL_PV;
2859 eval_sv(sv, G_SCALAR);
2866 if (croak_on_error && SvTRUE(ERRSV)) {
2867 Perl_croak(aTHX_ "%s", SvPVx_nolen_const(ERRSV));
2873 /* Require a module. */
2876 =head1 Embedding Functions
2878 =for apidoc p||require_pv
2880 Tells Perl to C<require> the file named by the string argument. It is
2881 analogous to the Perl code C<eval "require '$file'">. It's even
2882 implemented that way; consider using load_module instead.
2887 Perl_require_pv(pTHX_ const char *pv)
2893 PERL_ARGS_ASSERT_REQUIRE_PV;
2895 PUSHSTACKi(PERLSI_REQUIRE);
2897 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2898 eval_sv(sv_2mortal(sv), G_DISCARD);
2904 S_usage(pTHX) /* XXX move this out into a module ? */
2906 /* This message really ought to be max 23 lines.
2907 * Removed -h because the user already knows that option. Others? */
2909 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
2910 minimum of 509 character string literals. */
2911 static const char * const usage_msg[] = {
2912 " -0[octal] specify record separator (\\0, if no argument)\n"
2913 " -a autosplit mode with -n or -p (splits $_ into @F)\n"
2914 " -C[number/list] enables the listed Unicode features\n"
2915 " -c check syntax only (runs BEGIN and CHECK blocks)\n"
2916 " -d[:debugger] run program under debugger\n"
2917 " -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
2918 " -e program one line of program (several -e's allowed, omit programfile)\n"
2919 " -E program like -e, but enables all optional features\n"
2920 " -f don't do $sitelib/sitecustomize.pl at startup\n"
2921 " -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
2922 " -i[extension] edit <> files in place (makes backup if extension supplied)\n"
2923 " -Idirectory specify @INC/#include directory (several -I's allowed)\n",
2924 " -l[octal] enable line ending processing, specifies line terminator\n"
2925 " -[mM][-]module execute \"use/no module...\" before executing program\n"
2926 " -n assume \"while (<>) { ... }\" loop around program\n"
2927 " -p assume loop like -n but print line also, like sed\n"
2928 " -s enable rudimentary parsing for switches after programfile\n"
2929 " -S look for programfile using PATH environment variable\n",
2930 " -t enable tainting warnings\n"
2931 " -T enable tainting checks\n"
2932 " -u dump core after parsing program\n"
2933 " -U allow unsafe operations\n"
2934 " -v print version, patchlevel and license\n"
2935 " -V[:variable] print configuration summary (or a single Config.pm variable)\n",
2936 " -w enable many useful warnings\n"
2937 " -W enable all warnings\n"
2938 " -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
2939 " -X disable all warnings\n"
2941 "Run 'perldoc perl' for more help with Perl.\n\n",
2944 const char * const *p = usage_msg;
2945 PerlIO *out = PerlIO_stdout();
2948 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
2951 PerlIO_puts(out, *p++);
2955 /* convert a string of -D options (or digits) into an int.
2956 * sets *s to point to the char after the options */
2960 Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
2962 static const char * const usage_msgd[] = {
2963 " Debugging flag values: (see also -d)\n"
2964 " p Tokenizing and parsing (with v, displays parse stack)\n"
2965 " s Stack snapshots (with v, displays all stacks)\n"
2966 " l Context (loop) stack processing\n"
2967 " t Trace execution\n"
2968 " o Method and overloading resolution\n",
2969 " c String/numeric conversions\n"
2970 " P Print profiling info, source file input state\n"
2971 " m Memory and SV allocation\n"
2972 " f Format processing\n"
2973 " r Regular expression parsing and execution\n"
2974 " x Syntax tree dump\n",
2975 " u Tainting checks\n"
2976 " H Hash dump -- usurps values()\n"
2977 " X Scratchpad allocation\n"
2979 " S Op slab allocation\n"
2981 " R Include reference counts of dumped variables (eg when using -Ds)\n",
2982 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
2983 " v Verbose: use in conjunction with other flags\n"
2984 " C Copy On Write\n"
2985 " A Consistency checks on internal structures\n"
2986 " q quiet - currently only suppresses the 'EXECUTING' message\n"
2987 " M trace smart match resolution\n"
2988 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
2993 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
2996 /* if adding extra options, remember to update DEBUG_MASK */
2997 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMB";
2999 for (; isALNUM(**s); (*s)++) {
3000 const char * const d = strchr(debopts,**s);
3002 i |= 1 << (d - debopts);
3003 else if (ckWARN_d(WARN_DEBUGGING))
3004 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3005 "invalid option -D%c, use -D'' to see choices\n", **s);
3008 else if (isDIGIT(**s)) {
3010 for (; isALNUM(**s); (*s)++) ;
3012 else if (givehelp) {
3013 const char *const *p = usage_msgd;
3014 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
3017 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
3018 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3019 "-Dp not implemented on this platform\n");
3025 /* This routine handles any switches that can be given during run */
3028 Perl_moreswitches(pTHX_ const char *s)
3032 const char option = *s; /* used to remember option in -m/-M code */
3034 PERL_ARGS_ASSERT_MORESWITCHES;
3042 SvREFCNT_dec(PL_rs);
3043 if (s[1] == 'x' && s[2]) {
3044 const char *e = s+=2;
3050 flags = PERL_SCAN_SILENT_ILLDIGIT;
3051 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3052 if (s + numlen < e) {
3053 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3057 PL_rs = newSVpvs("");
3058 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
3059 tmps = (U8*)SvPVX(PL_rs);
3060 uvchr_to_utf8(tmps, rschar);
3061 SvCUR_set(PL_rs, UNISKIP(rschar));
3066 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3067 if (rschar & ~((U8)~0))
3068 PL_rs = &PL_sv_undef;
3069 else if (!rschar && numlen >= 2)
3070 PL_rs = newSVpvs("");
3072 char ch = (char)rschar;
3073 PL_rs = newSVpvn(&ch, 1);
3076 sv_setsv(get_sv("/", GV_ADD), PL_rs);
3081 PL_unicode = parse_unicode_opts( (const char **)&s );
3082 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3088 while (*s && !isSPACE(*s)) ++s;
3089 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
3100 forbid_setid('d', FALSE);
3103 /* -dt indicates to the debugger that threads will be used */
3104 if (*s == 't' && !isALNUM(s[1])) {
3106 my_setenv("PERL5DB_THREADED", "1");
3109 /* The following permits -d:Mod to accepts arguments following an =
3110 in the fashion that -MSome::Mod does. */
3111 if (*s == ':' || *s == '=') {
3118 sv = newSVpvs("no Devel::");
3120 sv = newSVpvs("use Devel::");
3124 end = s + strlen(s);
3126 /* We now allow -d:Module=Foo,Bar and -d:-Module */
3127 while(isALNUM(*s) || *s==':') ++s;
3129 sv_catpvn(sv, start, end - start);
3131 sv_catpvn(sv, start, s-start);
3132 /* Don't use NUL as q// delimiter here, this string goes in the
3134 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
3137 my_setenv("PERL5DB", SvPV_nolen_const(sv));
3141 PL_perldb = PERLDB_ALL;
3148 forbid_setid('D', FALSE);
3150 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
3151 #else /* !DEBUGGING */
3152 if (ckWARN_d(WARN_DEBUGGING))
3153 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3154 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
3155 for (s++; isALNUM(*s); s++) ;
3162 Safefree(PL_inplace);
3163 #if defined(__CYGWIN__) /* do backup extension automagically */
3164 if (*(s+1) == '\0') {
3165 PL_inplace = savepvs(".bak");
3168 #endif /* __CYGWIN__ */
3170 const char * const start = ++s;
3171 while (*s && !isSPACE(*s))
3174 PL_inplace = savepvn(start, s - start);
3178 if (*s == '-') /* Additional switches on #! line. */
3182 case 'I': /* -I handled both here and in parse_body() */
3183 forbid_setid('I', FALSE);
3185 while (*s && isSPACE(*s))
3190 /* ignore trailing spaces (possibly followed by other switches) */
3192 for (e = p; *e && !isSPACE(*e); e++) ;
3196 } while (*p && *p != '-');
3198 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
3204 Perl_croak(aTHX_ "No directory specified for -I");
3210 SvREFCNT_dec(PL_ors_sv);
3216 PL_ors_sv = newSVpvs("\n");
3217 numlen = 3 + (*s == '0');
3218 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
3222 if (RsPARA(PL_rs)) {
3223 PL_ors_sv = newSVpvs("\n\n");
3226 PL_ors_sv = newSVsv(PL_rs);
3231 forbid_setid('M', FALSE); /* XXX ? */
3234 forbid_setid('m', FALSE); /* XXX ? */
3239 const char *use = "use ";
3241 /* -M-foo == 'no foo' */
3242 /* Leading space on " no " is deliberate, to make both
3243 possibilities the same length. */
3244 if (*s == '-') { use = " no "; ++s; }
3245 sv = newSVpvn(use,4);
3247 /* We allow -M'Module qw(Foo Bar)' */
3248 while(isALNUM(*s) || *s==':') {
3257 Perl_croak(aTHX_ "Module name required with -%c option",
3260 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3261 "contains single ':'",
3262 (int)(s - start), start, option);
3263 end = s + strlen(s);
3265 sv_catpvn(sv, start, end - start);
3266 if (option == 'm') {
3268 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
3269 sv_catpvs( sv, " ()");
3272 sv_catpvn(sv, start, s-start);
3273 /* Use NUL as q''-delimiter. */
3274 sv_catpvs(sv, " split(/,/,q\0");
3276 sv_catpvn(sv, s, end - s);
3277 sv_catpvs(sv, "\0)");
3280 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
3283 Perl_croak(aTHX_ "Missing argument to -%c", option);
3294 forbid_setid('s', FALSE);
3295 PL_doswitches = TRUE;
3305 PL_do_undump = TRUE;
3315 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
3316 PL_dowarn |= G_WARN_ON;
3321 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
3322 if (!specialWARN(PL_compiling.cop_warnings))
3323 PerlMemShared_free(PL_compiling.cop_warnings);
3324 PL_compiling.cop_warnings = pWARN_ALL ;
3328 PL_dowarn = G_WARN_ALL_OFF;
3329 if (!specialWARN(PL_compiling.cop_warnings))
3330 PerlMemShared_free(PL_compiling.cop_warnings);
3331 PL_compiling.cop_warnings = pWARN_NONE ;
3338 if (s[0] == '-') /* Additional switches on #! line. */
3343 #if defined(WIN32) || !defined(PERL_STRICT_CR)
3349 #ifdef ALTERNATE_SHEBANG
3350 case 'S': /* OS/2 needs -S on "extproc" line. */
3353 case 'e': case 'f': case 'x': case 'E':
3354 #ifndef ALTERNATE_SHEBANG
3358 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
3361 "Unrecognized switch: -%.1s (-h will show valid options)",s
3371 if (!sv_derived_from(PL_patchlevel, "version"))
3372 upg_version(PL_patchlevel, TRUE);
3375 SV* level= vstringify(PL_patchlevel);
3376 #ifdef PERL_PATCHNUM
3377 # ifdef PERL_GIT_UNCOMMITTED_CHANGES
3378 SV *num = newSVpvs(PERL_PATCHNUM "*");
3380 SV *num = newSVpvs(PERL_PATCHNUM);
3383 if (sv_len(num)>=sv_len(level) && strnEQ(SvPV_nolen(num),SvPV_nolen(level),sv_len(level))) {
3384 SvREFCNT_dec(level);
3387 Perl_sv_catpvf(aTHX_ level, " (%"SVf")", num);
3391 PerlIO_printf(PerlIO_stdout(),
3392 "\nThis is perl " STRINGIFY(PERL_REVISION)
3393 ", version " STRINGIFY(PERL_VERSION)
3394 ", subversion " STRINGIFY(PERL_SUBVERSION)
3395 " (%"SVf") built for " ARCHNAME, level
3397 SvREFCNT_dec(level);
3400 /* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3401 PerlIO_printf(PerlIO_stdout(),
3402 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
3403 SVfARG(vstringify(PL_patchlevel))));
3404 PerlIO_printf(PerlIO_stdout(),
3405 Perl_form(aTHX_ " built under %s at %s %s\n",
3406 OSNAME, __DATE__, __TIME__));
3407 PerlIO_printf(PerlIO_stdout(),
3408 Perl_form(aTHX_ " OS Specific Release: %s\n",
3411 #if defined(LOCAL_PATCH_COUNT)
3412 if (LOCAL_PATCH_COUNT > 0)
3413 PerlIO_printf(PerlIO_stdout(),
3414 "\n(with %d registered patch%s, "
3415 "see perl -V for more detail)",
3417 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
3420 PerlIO_printf(PerlIO_stdout(),
3421 "\n\nCopyright 1987-2012, Larry Wall\n");
3423 PerlIO_printf(PerlIO_stdout(),
3424 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
3427 PerlIO_printf(PerlIO_stdout(),
3428 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3429 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
3432 PerlIO_printf(PerlIO_stdout(),
3433 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
3434 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
3437 PerlIO_printf(PerlIO_stdout(),
3438 "BeOS port Copyright Tom Spindler, 1997-1999\n");
3441 PerlIO_printf(PerlIO_stdout(),
3442 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n");
3445 PerlIO_printf(PerlIO_stdout(),
3446 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
3449 PerlIO_printf(PerlIO_stdout(),
3450 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
3453 PerlIO_printf(PerlIO_stdout(),
3454 "VM/ESA port by Neale Ferguson, 1998-1999\n");
3457 PerlIO_printf(PerlIO_stdout(),
3458 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
3461 PerlIO_printf(PerlIO_stdout(),
3462 "EPOC port by Olaf Flebbe, 1999-2002\n");
3465 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
3466 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
3469 #ifdef __SYMBIAN32__
3470 PerlIO_printf(PerlIO_stdout(),
3471 "Symbian port by Nokia, 2004-2005\n");
3473 #ifdef BINARY_BUILD_NOTICE
3474 BINARY_BUILD_NOTICE;
3476 PerlIO_printf(PerlIO_stdout(),
3478 Perl may be copied only under the terms of either the Artistic License or the\n\
3479 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
3480 Complete documentation for Perl, including FAQ lists, should be found on\n\
3481 this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
3482 Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
3486 /* compliments of Tom Christiansen */
3488 /* unexec() can be found in the Gnu emacs distribution */
3489 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
3492 #include <lib$routines.h>
3496 Perl_my_unexec(pTHX)
3498 PERL_UNUSED_CONTEXT;
3500 SV * prog = newSVpv(BIN_EXP, 0);
3501 SV * file = newSVpv(PL_origfilename, 0);
3505 sv_catpvs(prog, "/perl");
3506 sv_catpvs(file, ".perldump");
3508 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3509 /* unexec prints msg to stderr in case of failure */
3510 PerlProc_exit(status);
3513 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
3514 # elif defined(WIN32) || defined(__CYGWIN__)
3515 Perl_croak(aTHX_ "dump is not supported");
3517 ABORT(); /* for use with undump */
3522 /* initialize curinterp */
3528 # define PERLVAR(prefix,var,type)
3529 # define PERLVARA(prefix,var,n,type)
3530 # if defined(PERL_IMPLICIT_CONTEXT)
3531 # define PERLVARI(prefix,var,type,init) aTHX->prefix##var = init;
3532 # define PERLVARIC(prefix,var,type,init) aTHX->prefix##var = init;
3534 # define PERLVARI(prefix,var,type,init) PERL_GET_INTERP->var = init;
3535 # define PERLVARIC(prefix,var,type,init) PERL_GET_INTERP->var = init;
3537 # include "intrpvar.h"
3543 # define PERLVAR(prefix,var,type)
3544 # define PERLVARA(prefix,var,n,type)
3545 # define PERLVARI(prefix,var,type,init) PL_##var = init;
3546 # define PERLVARIC(prefix,var,type,init) PL_##var = init;
3547 # include "intrpvar.h"
3554 /* As these are inside a structure, PERLVARI isn't capable of initialising
3556 PL_reg_oldcurpm = PL_reg_curpm = NULL;
3557 PL_reg_poscache = PL_reg_starttry = NULL;
3561 S_init_main_stash(pTHX)
3566 PL_curstash = PL_defstash = (HV *)SvREFCNT_inc_simple_NN(newHV());
3567 /* We know that the string "main" will be in the global shared string
3568 table, so it's a small saving to use it rather than allocate another
3570 PL_curstname = newSVpvs_share("main");
3571 gv = gv_fetchpvs("main::", GV_ADD|GV_NOTQUAL, SVt_PVHV);
3572 /* If we hadn't caused another reference to "main" to be in the shared
3573 string table above, then it would be worth reordering these two,
3574 because otherwise all we do is delete "main" from it as a consequence
3575 of the SvREFCNT_dec, only to add it again with hv_name_set */
3576 SvREFCNT_dec(GvHV(gv));
3577 hv_name_set(PL_defstash, "main", 4, 0);
3578 GvHV(gv) = MUTABLE_HV(SvREFCNT_inc_simple(PL_defstash));
3580 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpvs("INC", GV_ADD|GV_NOTQUAL,
3582 SvREFCNT_inc_simple_void(PL_incgv); /* Don't allow it to be freed */
3583 GvMULTI_on(PL_incgv);
3584 PL_hintgv = gv_fetchpvs("\010", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^H */
3585 GvMULTI_on(PL_hintgv);
3586 PL_defgv = gv_fetchpvs("_", GV_ADD|GV_NOTQUAL, SVt_PVAV);
3587 SvREFCNT_inc_simple_void(PL_defgv);
3588 PL_errgv = gv_HVadd(gv_fetchpvs("@", GV_ADD|GV_NOTQUAL, SVt_PV));
3589 SvREFCNT_inc_simple_void(PL_errgv);
3590 GvMULTI_on(PL_errgv);
3591 PL_replgv = gv_fetchpvs("\022", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^R */
3592 GvMULTI_on(PL_replgv);
3593 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
3594 #ifdef PERL_DONT_CREATE_GVSV
3597 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
3599 SET_CURSTASH(PL_defstash);
3600 CopSTASH_set(&PL_compiling, PL_defstash);
3601 PL_debstash = GvHV(gv_fetchpvs("DB::", GV_ADDMULTI, SVt_PVHV));
3602 PL_globalstash = GvHV(gv_fetchpvs("CORE::GLOBAL::", GV_ADDMULTI,
3604 /* We must init $/ before switches are processed. */
3605 sv_setpvs(get_sv("/", GV_ADD), "\n");
3609 S_open_script(pTHX_ const char *scriptname, bool dosearch, bool *suidscript)
3612 PerlIO *rsfp = NULL;
3615 PERL_ARGS_ASSERT_OPEN_SCRIPT;
3618 PL_origfilename = savepvs("-e");
3621 /* if find_script() returns, it returns a malloc()-ed value */
3622 scriptname = PL_origfilename = find_script(scriptname, dosearch, NULL, 1);
3624 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
3625 const char *s = scriptname + 8;
3631 * Tell apart "normal" usage of fdscript, e.g.
3632 * with bash on FreeBSD:
3633 * perl <( echo '#!perl -DA'; echo 'print "$0\n"')
3634 * from usage in suidperl.
3635 * Does any "normal" usage leave garbage after the number???
3636 * Is it a mistake to use a similar /dev/fd/ construct for
3641 * Be supersafe and do some sanity-checks.
3642 * Still, can we be sure we got the right thing?
3645 Perl_croak(aTHX_ "Wrong syntax (suid) fd script name \"%s\"\n", s);
3648 Perl_croak(aTHX_ "Missing (suid) fd script name\n");
3650 scriptname = savepv(s + 1);
3651 Safefree(PL_origfilename);
3652 PL_origfilename = (char *)scriptname;
3657 CopFILE_free(PL_curcop);
3658 CopFILE_set(PL_curcop, PL_origfilename);
3659 if (*PL_origfilename == '-' && PL_origfilename[1] == '\0')
3660 scriptname = (char *)"";
3661 if (fdscript >= 0) {
3662 rsfp = PerlIO_fdopen(fdscript,PERL_SCRIPT_MODE);
3664 else if (!*scriptname) {
3665 forbid_setid(0, *suidscript);
3669 #ifdef FAKE_BIT_BUCKET
3670 /* This hack allows one not to have /dev/null (or BIT_BUCKET as it
3671 * is called) and still have the "-e" work. (Believe it or not,
3672 * a /dev/null is required for the "-e" to work because source
3673 * filter magic is used to implement it. ) This is *not* a general
3674 * replacement for a /dev/null. What we do here is create a temp
3675 * file (an empty file), open up that as the script, and then
3676 * immediately close and unlink it. Close enough for jazz. */
3677 #define FAKE_BIT_BUCKET_PREFIX "/tmp/perlnull-"
3678 #define FAKE_BIT_BUCKET_SUFFIX "XXXXXXXX"
3679 #define FAKE_BIT_BUCKET_TEMPLATE FAKE_BIT_BUCKET_PREFIX FAKE_BIT_BUCKET_SUFFIX
3680 char tmpname[sizeof(FAKE_BIT_BUCKET_TEMPLATE)] = {
3681 FAKE_BIT_BUCKET_TEMPLATE
3683 const char * const err = "Failed to create a fake bit bucket";
3684 if (strEQ(scriptname, BIT_BUCKET)) {
3685 #ifdef HAS_MKSTEMP /* Hopefully mkstemp() is safe here. */
3686 int tmpfd = mkstemp(tmpname);
3688 scriptname = tmpname;
3691 Perl_croak(aTHX_ err);
3694 scriptname = mktemp(tmpname);
3696 Perl_croak(aTHX_ err);
3701 rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
3702 #ifdef FAKE_BIT_BUCKET
3703 if (memEQ(scriptname, FAKE_BIT_BUCKET_PREFIX,
3704 sizeof(FAKE_BIT_BUCKET_PREFIX) - 1)
3705 && strlen(scriptname) == sizeof(tmpname) - 1) {
3708 scriptname = BIT_BUCKET;
3712 /* PSz 16 Sep 03 Keep neat error message */
3714 Perl_croak(aTHX_ "Can't open "BIT_BUCKET": %s\n", Strerror(errno));
3716 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3717 CopFILE(PL_curcop), Strerror(errno));
3719 #if defined(HAS_FCNTL) && defined(F_SETFD)
3720 /* ensure close-on-exec */
3721 fcntl(PerlIO_fileno(rsfp), F_SETFD, 1);
3727 * I_SYSSTATVFS HAS_FSTATVFS
3729 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
3730 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
3731 * here so that metaconfig picks them up. */
3734 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
3735 /* Don't even need this function. */
3738 S_validate_suid(pTHX_ PerlIO *rsfp)
3740 const UV my_uid = PerlProc_getuid();
3741 const UV my_euid = PerlProc_geteuid();
3742 const UV my_gid = PerlProc_getgid();
3743 const UV my_egid = PerlProc_getegid();
3745 PERL_ARGS_ASSERT_VALIDATE_SUID;
3747 if (my_euid != my_uid || my_egid != my_gid) { /* (suidperl doesn't exist, in fact) */
3750 PerlLIO_fstat(PerlIO_fileno(rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3751 if ((my_euid != my_uid && my_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3753 (my_egid != my_gid && my_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3756 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3757 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3758 /* not set-id, must be wrapped */
3761 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3764 S_find_beginning(pTHX_ SV* linestr_sv, PerlIO *rsfp)
3768 register const char *s2;
3770 PERL_ARGS_ASSERT_FIND_BEGINNING;
3772 /* skip forward in input to the real script? */
3775 if ((s = sv_gets(linestr_sv, rsfp, 0)) == NULL)
3776 Perl_croak(aTHX_ "No Perl script found in input\n");
3778 } while (!(*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))));
3779 PerlIO_ungetc(rsfp, '\n'); /* to keep line count right */
3780 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3782 while (*s == ' ' || *s == '\t') s++;
3784 while (isDIGIT(s2[-1]) || s2[-1] == '-' || s2[-1] == '.'
3785 || s2[-1] == '_') s2--;
3786 if (strnEQ(s2-4,"perl",4))
3787 while ((s = moreswitches(s)))
3797 const UV my_uid = PerlProc_getuid();
3798 const UV my_euid = PerlProc_geteuid();
3799 const UV my_gid = PerlProc_getgid();
3800 const UV my_egid = PerlProc_getegid();
3802 /* Should not happen: */
3803 CHECK_MALLOC_TAINT(my_uid && (my_euid != my_uid || my_egid != my_gid));
3804 PL_tainting |= (my_uid && (my_euid != my_uid || my_egid != my_gid));
3807 * Should go by suidscript, not uid!=euid: why disallow
3808 * system("ls") in scripts run from setuid things?
3809 * Or, is this run before we check arguments and set suidscript?
3810 * What about SETUID_SCRIPTS_ARE_SECURE_NOW: could we use fdscript then?
3811 * (We never have suidscript, can we be sure to have fdscript?)
3812 * Or must then go by UID checks? See comments in forbid_setid also.
3816 /* This is used very early in the lifetime of the program,
3817 * before even the options are parsed, so PL_tainting has
3818 * not been initialized properly. */
3820 Perl_doing_taint(int argc, char *argv[], char *envp[])
3822 #ifndef PERL_IMPLICIT_SYS
3823 /* If we have PERL_IMPLICIT_SYS we can't call getuid() et alia
3824 * before we have an interpreter-- and the whole point of this
3825 * function is to be called at such an early stage. If you are on
3826 * a system with PERL_IMPLICIT_SYS but you do have a concept of
3827 * "tainted because running with altered effective ids', you'll
3828 * have to add your own checks somewhere in here. The two most
3829 * known samples of 'implicitness' are Win32 and NetWare, neither
3830 * of which has much of concept of 'uids'. */
3831 int uid = PerlProc_getuid();
3832 int euid = PerlProc_geteuid();
3833 int gid = PerlProc_getgid();
3834 int egid = PerlProc_getegid();
3841 if (uid && (euid != uid || egid != gid))
3843 #endif /* !PERL_IMPLICIT_SYS */
3844 /* This is a really primitive check; environment gets ignored only
3845 * if -T are the first chars together; otherwise one gets
3846 * "Too late" message. */
3847 if ( argc > 1 && argv[1][0] == '-'
3848 && (argv[1][1] == 't' || argv[1][1] == 'T') )
3853 /* Passing the flag as a single char rather than a string is a slight space
3854 optimisation. The only message that isn't /^-.$/ is
3855 "program input from stdin", which is substituted in place of '\0', which
3856 could never be a command line flag. */
3858 S_forbid_setid(pTHX_ const char flag, const bool suidscript) /* g */
3861 char string[3] = "-x";
3862 const char *message = "program input from stdin";
3869 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
3870 if (PerlProc_getuid() != PerlProc_geteuid())
3871 Perl_croak(aTHX_ "No %s allowed while running setuid", message);
3872 if (PerlProc_getgid() != PerlProc_getegid())
3873 Perl_croak(aTHX_ "No %s allowed while running setgid", message);
3874 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3876 Perl_croak(aTHX_ "No %s allowed with (suid) fdscript", message);
3880 Perl_init_dbargs(pTHX)
3882 AV *const args = PL_dbargs = GvAV(gv_AVadd((gv_fetchpvs("DB::args",
3887 /* Someone has already created it.
3888 It might have entries, and if we just turn off AvREAL(), they will
3889 "leak" until global destruction. */
3891 if (SvTIED_mg((const SV *)args, PERL_MAGIC_tied))
3892 Perl_croak(aTHX_ "Cannot set tied @DB::args");
3894 AvREIFY_only(PL_dbargs);
3898 Perl_init_debugger(pTHX)
3901 HV * const ostash = PL_curstash;
3903 PL_curstash = (HV *)SvREFCNT_inc_simple(PL_debstash);
3905 Perl_init_dbargs(aTHX);
3906 PL_DBgv = gv_fetchpvs("DB::DB", GV_ADDMULTI, SVt_PVGV);
3907 PL_DBline = gv_fetchpvs("DB::dbline", GV_ADDMULTI, SVt_PVAV);
3908 PL_DBsub = gv_HVadd(gv_fetchpvs("DB::sub", GV_ADDMULTI, SVt_PVHV));
3909 PL_DBsingle = GvSV((gv_fetchpvs("DB::single", GV_ADDMULTI, SVt_PV)));
3910 if (!SvIOK(PL_DBsingle))
3911 sv_setiv(PL_DBsingle, 0);
3912 PL_DBtrace = GvSV((gv_fetchpvs("DB::trace", GV_ADDMULTI, SVt_PV)));
3913 if (!SvIOK(PL_DBtrace))
3914 sv_setiv(PL_DBtrace, 0);
3915 PL_DBsignal = GvSV((gv_fetchpvs("DB::signal", GV_ADDMULTI, SVt_PV)));
3916 if (!SvIOK(PL_DBsignal))
3917 sv_setiv(PL_DBsignal, 0);
3918 SvREFCNT_dec(PL_curstash);
3919 PL_curstash = ostash;
3922 #ifndef STRESS_REALLOC
3923 #define REASONABLE(size) (size)
3925 #define REASONABLE(size) (1) /* unreasonable */
3929 Perl_init_stacks(pTHX)
3932 /* start with 128-item stack and 8K cxstack */
3933 PL_curstackinfo = new_stackinfo(REASONABLE(128),
3934 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3935 PL_curstackinfo->si_type = PERLSI_MAIN;
3936 PL_curstack = PL_curstackinfo->si_stack;
3937 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
3939 PL_stack_base = AvARRAY(PL_curstack);
3940 PL_stack_sp = PL_stack_base;
3941 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
3943 Newx(PL_tmps_stack,REASONABLE(128),SV*);
3946 PL_tmps_max = REASONABLE(128);
3948 Newx(PL_markstack,REASONABLE(32),I32);
3949 PL_markstack_ptr = PL_markstack;
3950 PL_markstack_max = PL_markstack + REASONABLE(32);
3954 Newx(PL_scopestack,REASONABLE(32),I32);
3956 Newx(PL_scopestack_name,REASONABLE(32),const char*);
3958 PL_scopestack_ix = 0;
3959 PL_scopestack_max = REASONABLE(32);
3961 Newx(PL_savestack,REASONABLE(128),ANY);
3962 PL_savestack_ix = 0;
3963 PL_savestack_max = REASONABLE(128);
3972 while (PL_curstackinfo->si_next)
3973 PL_curstackinfo = PL_curstackinfo->si_next;
3974 while (PL_curstackinfo) {
3975 PERL_SI *p = PL_curstackinfo->si_prev;
3976 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3977 Safefree(PL_curstackinfo->si_cxstack);
3978 Safefree(PL_curstackinfo);
3979 PL_curstackinfo = p;
3981 Safefree(PL_tmps_stack);
3982 Safefree(PL_markstack);
3983 Safefree(PL_scopestack);
3985 Safefree(PL_scopestack_name);
3987 Safefree(PL_savestack);
3991 Perl_populate_isa(pTHX_ const char *name, STRLEN len, ...)
3993 GV *const gv = gv_fetchpvn(name, len, GV_ADD | GV_ADDMULTI, SVt_PVAV);
3994 AV *const isa = GvAVn(gv);
3997 PERL_ARGS_ASSERT_POPULATE_ISA;
3999 if(AvFILLp(isa) != -1)
4002 /* NOTE: No support for tied ISA */
4004 va_start(args, len);
4006 const char *const parent = va_arg(args, const char*);
4011 parent_len = va_arg(args, size_t);
4013 /* Arguments are supplied with a trailing :: */
4014 assert(parent_len > 2);
4015 assert(parent[parent_len - 1] == ':');
4016 assert(parent[parent_len - 2] == ':');
4017 av_push(isa, newSVpvn(parent, parent_len - 2));
4018 (void) gv_fetchpvn(parent, parent_len, GV_ADD, SVt_PVGV);
4025 S_init_predump_symbols(pTHX)
4031 sv_setpvs(get_sv("\"", GV_ADD), " ");
4032 PL_ofsgv = (GV*)SvREFCNT_inc(gv_fetchpvs(",", GV_ADD|GV_NOTQUAL, SVt_PV));
4035 /* Historically, PVIOs were blessed into IO::Handle, unless
4036 FileHandle was loaded, in which case they were blessed into
4037 that. Action at a distance.
4038 However, if we simply bless into IO::Handle, we break code
4039 that assumes that PVIOs will have (among others) a seek
4040 method. IO::File inherits from IO::Handle and IO::Seekable,
4041 and provides the needed methods. But if we simply bless into
4042 it, then we break code that assumed that by loading
4043 IO::Handle, *it* would work.
4044 So a compromise is to set up the correct @IO::File::ISA,
4045 so that code that does C<use IO::Handle>; will still work.
4048 Perl_populate_isa(aTHX_ STR_WITH_LEN("IO::File::ISA"),
4049 STR_WITH_LEN("IO::Handle::"),
4050 STR_WITH_LEN("IO::Seekable::"),
4051 STR_WITH_LEN("Exporter::"),
4054 PL_stdingv = gv_fetchpvs("STDIN", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4055 GvMULTI_on(PL_stdingv);
4056 io = GvIOp(PL_stdingv);
4057 IoTYPE(io) = IoTYPE_RDONLY;
4058 IoIFP(io) = PerlIO_stdin();
4059 tmpgv = gv_fetchpvs("stdin", GV_ADD|GV_NOTQUAL, SVt_PV);
4061 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4063 tmpgv = gv_fetchpvs("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4066 IoTYPE(io) = IoTYPE_WRONLY;
4067 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
4069 tmpgv = gv_fetchpvs("stdout", GV_ADD|GV_NOTQUAL, SVt_PV);
4071 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4073 PL_stderrgv = gv_fetchpvs("STDERR", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4074 GvMULTI_on(PL_stderrgv);
4075 io = GvIOp(PL_stderrgv);
4076 IoTYPE(io) = IoTYPE_WRONLY;
4077 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
4078 tmpgv = gv_fetchpvs("stderr", GV_ADD|GV_NOTQUAL, SVt_PV);
4080 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4082 PL_statname = newSVpvs(""); /* last filename we did stat on */
4086 Perl_init_argv_symbols(pTHX_ register int argc, register char **argv)
4090 PERL_ARGS_ASSERT_INIT_ARGV_SYMBOLS;
4092 argc--,argv++; /* skip name of script */
4093 if (PL_doswitches) {
4094 for (; argc > 0 && **argv == '-'; argc--,argv++) {
4098 if (argv[0][1] == '-' && !argv[0][2]) {
4102 if ((s = strchr(argv[0], '='))) {
4103 const char *const start_name = argv[0] + 1;
4104 sv_setpv(GvSV(gv_fetchpvn_flags(start_name, s - start_name,
4105 TRUE, SVt_PV)), s + 1);
4108 sv_setiv(GvSV(gv_fetchpv(argv[0]+1, GV_ADD, SVt_PV)),1);
4111 if ((PL_argvgv = gv_fetchpvs("ARGV", GV_ADD|GV_NOTQUAL, SVt_PVAV))) {
4112 GvMULTI_on(PL_argvgv);
4113 (void)gv_AVadd(PL_argvgv);
4114 av_clear(GvAVn(PL_argvgv));
4115 for (; argc > 0; argc--,argv++) {
4116 SV * const sv = newSVpv(argv[0],0);
4117 av_push(GvAVn(PL_argvgv),sv);
4118 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
4119 if (PL_unicode & PERL_UNICODE_ARGV_FLAG)
4122 if (PL_unicode & PERL_UNICODE_WIDESYSCALLS_FLAG) /* Sarathy? */
4123 (void)sv_utf8_decode(sv);
4127 if (PL_inplace && (!PL_argvgv || AvFILL(GvAV(PL_argvgv)) == -1))
4128 Perl_ck_warner_d(aTHX_ packWARN(WARN_INPLACE),
4129 "-i used with no filenames on the command line, "
4130 "reading from STDIN");
4134 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
4139 PERL_ARGS_ASSERT_INIT_POSTDUMP_SYMBOLS;
4141 PL_toptarget = newSV_type(SVt_PVIV);
4142 sv_setpvs(PL_toptarget, "");
4143 PL_bodytarget = newSV_type(SVt_PVIV);
4144 sv_setpvs(PL_bodytarget, "");
4145 PL_formtarget = PL_bodytarget;
4149 init_argv_symbols(argc,argv);
4151 if ((tmpgv = gv_fetchpvs("0", GV_ADD|GV_NOTQUAL, SVt_PV))) {
4152 sv_setpv(GvSV(tmpgv),PL_origfilename);
4154 if ((PL_envgv = gv_fetchpvs("ENV", GV_ADD|GV_NOTQUAL, SVt_PVHV))) {
4156 bool env_is_not_environ;
4157 GvMULTI_on(PL_envgv);
4158 hv = GvHVn(PL_envgv);
4159 hv_magic(hv, NULL, PERL_MAGIC_env);
4161 #ifdef USE_ENVIRON_ARRAY
4162 /* Note that if the supplied env parameter is actually a copy
4163 of the global environ then it may now point to free'd memory
4164 if the environment has been modified since. To avoid this
4165 problem we treat env==NULL as meaning 'use the default'
4169 env_is_not_environ = env != environ;
4170 if (env_is_not_environ
4171 # ifdef USE_ITHREADS
4172 && PL_curinterp == aTHX
4181 for (; *env; env++) {
4184 if (!(s = strchr(old_var,'=')) || s == old_var)
4187 #if defined(MSDOS) && !defined(DJGPP)
4189 (void)strupr(old_var);
4192 sv = newSVpv(s+1, 0);
4193 (void)hv_store(hv, old_var, s - old_var, sv, 0);
4194 if (env_is_not_environ)
4198 #endif /* USE_ENVIRON_ARRAY */
4199 #endif /* !PERL_MICRO */
4203 /* touch @F array to prevent spurious warnings 20020415 MJD */
4205 (void) get_av("main::F", GV_ADD | GV_ADDMULTI);
4210 S_init_perllib(pTHX)
4214 const char *perl5lib = NULL;
4217 #if defined(WIN32) && !defined(PERL_IS_MINIPERL)
4223 perl5lib = PerlEnv_getenv("PERL5LIB");
4225 * It isn't possible to delete an environment variable with
4226 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4227 * case we treat PERL5LIB as undefined if it has a zero-length value.
4229 #if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
4230 if (perl5lib && *perl5lib != '\0')
4234 incpush_use_sep(perl5lib, 0, INCPUSH_ADD_SUB_DIRS);
4236 s = PerlEnv_getenv("PERLLIB");
4238 incpush_use_sep(s, 0, 0);
4241 /* Treat PERL5?LIB as a possible search list logical name -- the
4242 * "natural" VMS idiom for a Unix path string. We allow each
4243 * element to be a set of |-separated directories for compatibility.
4247 if (my_trnlnm("PERL5LIB",buf,0))
4249 incpush_use_sep(buf, 0, INCPUSH_ADD_SUB_DIRS);
4250 } while (my_trnlnm("PERL5LIB",buf,++idx));
4252 while (my_trnlnm("PERLLIB",buf,idx++))
4253 incpush_use_sep(buf, 0, 0);
4258 #ifndef PERL_IS_MINIPERL
4259 /* miniperl gets just -I..., the split of $ENV{PERL5LIB}, and "." in @INC
4260 (and not the architecture specific directories from $ENV{PERL5LIB}) */
4262 /* Use the ~-expanded versions of APPLLIB (undocumented),
4263 SITEARCH, SITELIB, VENDORARCH, VENDORLIB, ARCHLIB and PRIVLIB
4266 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP),
4267 INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4271 /* sitearch is always relative to sitelib on Windows for
4272 * DLL-based path intuition to work correctly */
4273 # if !defined(WIN32)
4274 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITEARCH_EXP),
4275 INCPUSH_CAN_RELOCATE);
4281 /* this picks up sitearch as well */
4282 s = win32_get_sitelib(PERL_FS_VERSION, &len);
4284 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4286 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_EXP), INCPUSH_CAN_RELOCATE);
4290 #ifdef PERL_VENDORARCH_EXP
4291 /* vendorarch is always relative to vendorlib on Windows for
4292 * DLL-based path intuition to work correctly */
4293 # if !defined(WIN32)
4294 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORARCH_EXP),
4295 INCPUSH_CAN_RELOCATE);
4299 #ifdef PERL_VENDORLIB_EXP
4301 /* this picks up vendorarch as well */
4302 s = win32_get_vendorlib(PERL_FS_VERSION, &len);
4304 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4306 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_EXP),
4307 INCPUSH_CAN_RELOCATE);
4312 S_incpush_use_sep(aTHX_ STR_WITH_LEN(ARCHLIB_EXP), INCPUSH_CAN_RELOCATE);
4316 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
4320 s = win32_get_privlib(PERL_FS_VERSION, &len);
4322 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4325 S_incpush_use_sep(aTHX_ PRIVLIB_EXP, 0, INCPUSH_CAN_RELOCATE);
4327 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PRIVLIB_EXP), INCPUSH_CAN_RELOCATE);
4331 #ifdef PERL_OTHERLIBDIRS
4332 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS),
4333 INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_NOT_BASEDIR
4334 |INCPUSH_CAN_RELOCATE);
4340 * It isn't possible to delete an environment variable with
4341 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4342 * case we treat PERL5LIB as undefined if it has a zero-length value.
4344 #if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
4345 if (perl5lib && *perl5lib != '\0')
4349 incpush_use_sep(perl5lib, 0,
4350 INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
4352 /* Treat PERL5?LIB as a possible search list logical name -- the
4353 * "natural" VMS idiom for a Unix path string. We allow each
4354 * element to be a set of |-separated directories for compatibility.
4358 if (my_trnlnm("PERL5LIB",buf,0))
4360 incpush_use_sep(buf, 0,
4361 INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
4362 } while (my_trnlnm("PERL5LIB",buf,++idx));
4366 /* Use the ~-expanded versions of APPLLIB (undocumented),
4367 SITELIB and VENDORLIB for older versions
4370 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP), INCPUSH_ADD_OLD_VERS
4371 |INCPUSH_NOT_BASEDIR|INCPUSH_CAN_RELOCATE);
4374 #if defined(SITELIB_STEM) && defined(PERL_INC_VERSION_LIST)
4375 /* Search for version-specific dirs below here */
4376 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_STEM),
4377 INCPUSH_ADD_OLD_VERS|INCPUSH_CAN_RELOCATE);
4381 #if defined(PERL_VENDORLIB_STEM) && defined(PERL_INC_VERSION_LIST)
4382 /* Search for version-specific dirs below here */
4383 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_STEM),
4384 INCPUSH_ADD_OLD_VERS|INCPUSH_CAN_RELOCATE);
4387 #ifdef PERL_OTHERLIBDIRS
4388 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS),
4389 INCPUSH_ADD_OLD_VERS|INCPUSH_ADD_ARCHONLY_SUB_DIRS
4390 |INCPUSH_CAN_RELOCATE);
4392 #endif /* !PERL_IS_MINIPERL */
4395 S_incpush(aTHX_ STR_WITH_LEN("."), 0);
4398 #if defined(DOSISH) || defined(EPOC) || defined(__SYMBIAN32__)
4399 # define PERLLIB_SEP ';'
4402 # define PERLLIB_SEP '|'
4404 # define PERLLIB_SEP ':'
4407 #ifndef PERLLIB_MANGLE
4408 # define PERLLIB_MANGLE(s,n) (s)
4411 #ifndef PERL_IS_MINIPERL
4412 /* Push a directory onto @INC if it exists.
4413 Generate a new SV if we do this, to save needing to copy the SV we push
4416 S_incpush_if_exists(pTHX_ AV *const av, SV *dir, SV *const stem)
4421 PERL_ARGS_ASSERT_INCPUSH_IF_EXISTS;
4423 if (PerlLIO_stat(SvPVX_const(dir), &tmpstatbuf) >= 0 &&
4424 S_ISDIR(tmpstatbuf.st_mode)) {
4426 dir = newSVsv(stem);
4428 /* Truncate dir back to stem. */
4429 SvCUR_set(dir, SvCUR(stem));
4436 S_mayberelocate(pTHX_ const char *const dir, STRLEN len, U32 flags)
4438 const U8 canrelocate = (U8)flags & INCPUSH_CAN_RELOCATE;
4441 PERL_ARGS_ASSERT_MAYBERELOCATE;
4445 /* I am not convinced that this is valid when PERLLIB_MANGLE is
4446 defined to so something (in os2/os2.c), but the code has been
4447 this way, ignoring any possible changed of length, since
4448 760ac839baf413929cd31cc32ffd6dba6b781a81 (5.003_02) so I'll leave
4450 libdir = newSVpvn(PERLLIB_MANGLE(dir, len), len);
4452 libdir = newSVpv(PERLLIB_MANGLE(dir, 0), 0);
4459 if ((unix = tounixspec_ts(SvPV(libdir,len),NULL)) != NULL) {
4461 while (unix[len-1] == '/') len--; /* Cosmetic */
4462 sv_usepvn(libdir,unix,len);
4465 PerlIO_printf(Perl_error_log,
4466 "Failed to unixify @INC element \"%s\"\n",
4467 SvPV_nolen_const(libdir));
4471 /* Do the if() outside the #ifdef to avoid warnings about an unused
4474 #ifdef PERL_RELOCATABLE_INC
4476 * Relocatable include entries are marked with a leading .../
4479 * 0: Remove that leading ".../"
4480 * 1: Remove trailing executable name (anything after the last '/')
4481 * from the perl path to give a perl prefix
4483 * While the @INC element starts "../" and the prefix ends with a real
4484 * directory (ie not . or ..) chop that real directory off the prefix
4485 * and the leading "../" from the @INC element. ie a logical "../"
4487 * Finally concatenate the prefix and the remainder of the @INC element
4488 * The intent is that /usr/local/bin/perl and .../../lib/perl5
4489 * generates /usr/local/lib/perl5
4491 const char *libpath = SvPVX(libdir);
4492 STRLEN libpath_len = SvCUR(libdir);
4493 if (libpath_len >= 4 && memEQ (libpath, ".../", 4)) {
4495 SV * const caret_X = get_sv("\030", 0);
4496 /* Going to use the SV just as a scratch buffer holding a C
4502 /* $^X is *the* source of taint if tainting is on, hence
4503 SvPOK() won't be true. */
4505 assert(SvPOKp(caret_X));
4506 prefix_sv = newSVpvn_flags(SvPVX(caret_X), SvCUR(caret_X),
4508 /* Firstly take off the leading .../
4509 If all else fail we'll do the paths relative to the current
4511 sv_chop(libdir, libpath + 4);
4512 /* Don't use SvPV as we're intentionally bypassing taining,
4513 mortal copies that the mg_get of tainting creates, and
4514 corruption that seems to come via the save stack.
4515 I guess that the save stack isn't correctly set up yet. */
4516 libpath = SvPVX(libdir);
4517 libpath_len = SvCUR(libdir);
4519 /* This would work more efficiently with memrchr, but as it's
4520 only a GNU extension we'd need to probe for it and
4521 implement our own. Not hard, but maybe not worth it? */
4523 prefix = SvPVX(prefix_sv);
4524 lastslash = strrchr(prefix, '/');
4526 /* First time in with the *lastslash = '\0' we just wipe off
4527 the trailing /perl from (say) /usr/foo/bin/perl
4531 while ((*lastslash = '\0'), /* Do that, come what may. */
4532 (libpath_len >= 3 && memEQ(libpath, "../", 3)
4533 && (lastslash = strrchr(prefix, '/')))) {
4534 if (lastslash[1] == '\0'
4535 || (lastslash[1] == '.'
4536 && (lastslash[2] == '/' /* ends "/." */
4537 || (lastslash[2] == '/'
4538 && lastslash[3] == '/' /* or "/.." */
4540 /* Prefix ends "/" or "/." or "/..", any of which
4541 are fishy, so don't do any more logical cleanup.
4545 /* Remove leading "../" from path */
4548 /* Next iteration round the loop removes the last
4549 directory name from prefix by writing a '\0' in
4550 the while clause. */
4552 /* prefix has been terminated with a '\0' to the correct
4553 length. libpath points somewhere into the libdir SV.
4554 We need to join the 2 with '/' and drop the result into
4556 tempsv = Perl_newSVpvf(aTHX_ "%s/%s", prefix, libpath);
4557 SvREFCNT_dec(libdir);
4558 /* And this is the new libdir. */
4561 (PerlProc_getuid() != PerlProc_geteuid() ||
4562 PerlProc_getgid() != PerlProc_getegid())) {
4563 /* Need to taint relocated paths if running set ID */
4564 SvTAINTED_on(libdir);
4567 SvREFCNT_dec(prefix_sv);
4575 S_incpush(pTHX_ const char *const dir, STRLEN len, U32 flags)
4578 #ifndef PERL_IS_MINIPERL
4579 const U8 using_sub_dirs
4580 = (U8)flags & (INCPUSH_ADD_VERSIONED_SUB_DIRS
4581 |INCPUSH_ADD_ARCHONLY_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
4582 const U8 add_versioned_sub_dirs
4583 = (U8)flags & INCPUSH_ADD_VERSIONED_SUB_DIRS;
4584 const U8 add_archonly_sub_dirs
4585 = (U8)flags & INCPUSH_ADD_ARCHONLY_SUB_DIRS;
4586 #ifdef PERL_INC_VERSION_LIST
4587 const U8 addoldvers = (U8)flags & INCPUSH_ADD_OLD_VERS;
4590 const U8 unshift = (U8)flags & INCPUSH_UNSHIFT;
4591 const U8 push_basedir = (flags & INCPUSH_NOT_BASEDIR) ? 0 : 1;
4592 AV *const inc = GvAVn(PL_incgv);
4594 PERL_ARGS_ASSERT_INCPUSH;
4597 /* Could remove this vestigial extra block, if we don't mind a lot of
4598 re-indenting diff noise. */
4600 SV *const libdir = mayberelocate(dir, len, flags);
4601 /* Change 20189146be79a0596543441fa369c6bf7f85103f, to fix RT#6665,
4602 arranged to unshift #! line -I onto the front of @INC. However,
4603 -I can add version and architecture specific libraries, and they
4604 need to go first. The old code assumed that it was always
4605 pushing. Hence to make it work, need to push the architecture
4606 (etc) libraries onto a temporary array, then "unshift" that onto
4607 the front of @INC. */
4608 #ifndef PERL_IS_MINIPERL
4609 AV *const av = (using_sub_dirs) ? (unshift ? newAV() : inc) : NULL;
4612 * BEFORE pushing libdir onto @INC we may first push version- and
4613 * archname-specific sub-directories.
4615 if (using_sub_dirs) {
4616 SV *subdir = newSVsv(libdir);
4617 #ifdef PERL_INC_VERSION_LIST
4618 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
4619 const char * const incverlist[] = { PERL_INC_VERSION_LIST };
4620 const char * const *incver;
4623 if (add_versioned_sub_dirs) {
4624 /* .../version/archname if -d .../version/archname */
4625 sv_catpvs(subdir, "/" PERL_FS_VERSION "/" ARCHNAME);
4626 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4628 /* .../version if -d .../version */
4629 sv_catpvs(subdir, "/" PERL_FS_VERSION);
4630 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4633 #ifdef PERL_INC_VERSION_LIST
4635 for (incver = incverlist; *incver; incver++) {
4636 /* .../xxx if -d .../xxx */
4637 Perl_sv_catpvf(aTHX_ subdir, "/%s", *incver);
4638 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4643 if (add_archonly_sub_dirs) {
4644 /* .../archname if -d .../archname */
4645 sv_catpvs(subdir, "/" ARCHNAME);
4646 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4650 assert (SvREFCNT(subdir) == 1);
4651 SvREFCNT_dec(subdir);
4653 #endif /* !PERL_IS_MINIPERL */
4654 /* finally add this lib directory at the end of @INC */
4656 #ifdef PERL_IS_MINIPERL
4657 const U32 extra = 0;
4659 U32 extra = av_len(av) + 1;
4661 av_unshift(inc, extra + push_basedir);
4663 av_store(inc, extra, libdir);
4664 #ifndef PERL_IS_MINIPERL
4666 /* av owns a reference, av_store() expects to be donated a
4667 reference, and av expects to be sane when it's cleared.
4668 If I wanted to be naughty and wrong, I could peek inside the
4669 implementation of av_clear(), realise that it uses
4670 SvREFCNT_dec() too, so av's array could be a run of NULLs,
4671 and so directly steal from it (with a memcpy() to inc, and
4672 then memset() to NULL them out. But people copy code from the
4673 core expecting it to be best practise, so let's use the API.
4674 Although studious readers will note that I'm not checking any
4676 av_store(inc, extra, SvREFCNT_inc(*av_fetch(av, extra, FALSE)));
4681 else if (push_basedir) {
4682 av_push(inc, libdir);
4685 if (!push_basedir) {
4686 assert (SvREFCNT(libdir) == 1);
4687 SvREFCNT_dec(libdir);
4693 S_incpush_use_sep(pTHX_ const char *p, STRLEN len, U32 flags)
4697 /* This logic has been broken out from S_incpush(). It may be possible to
4700 PERL_ARGS_ASSERT_INCPUSH_USE_SEP;
4702 /* perl compiled with -DPERL_RELOCATABLE_INCPUSH will ignore the len
4703 * argument to incpush_use_sep. This allows creation of relocatable
4704 * Perl distributions that patch the binary at install time. Those
4705 * distributions will have to provide their own relocation tools; this
4706 * is not a feature otherwise supported by core Perl.
4708 #ifndef PERL_RELOCATABLE_INCPUSH
4715 /* Break at all separators */
4716 while ((s = (const char*)memchr(p, PERLLIB_SEP, end - p))) {
4718 /* skip any consecutive separators */
4720 /* Uncomment the next line for PATH semantics */
4721 /* But you'll need to write tests */
4722 /* av_push(GvAVn(PL_incgv), newSVpvs(".")); */
4724 incpush(p, (STRLEN)(s - p), flags);
4729 incpush(p, (STRLEN)(end - p), flags);
4734 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
4738 volatile const line_t oldline = PL_curcop ? CopLINE(PL_curcop) : 0;
4744 PERL_ARGS_ASSERT_CALL_LIST;
4746 while (av_len(paramList) >= 0) {
4747 cv = MUTABLE_CV(av_shift(paramList));
4749 if (paramList == PL_beginav) {
4750 /* save PL_beginav for compiler */
4751 Perl_av_create_and_push(aTHX_ &PL_beginav_save, MUTABLE_SV(cv));
4753 else if (paramList == PL_checkav) {
4754 /* save PL_checkav for compiler */
4755 Perl_av_create_and_push(aTHX_ &PL_checkav_save, MUTABLE_SV(cv));
4757 else if (paramList == PL_unitcheckav) {
4758 /* save PL_unitcheckav for compiler */
4759 Perl_av_create_and_push(aTHX_ &PL_unitcheckav_save, MUTABLE_SV(cv));
4770 PL_madskills |= 16384;
4775 PL_madskills &= ~16384;
4778 (void)SvPV_const(atsv, len);
4780 PL_curcop = &PL_compiling;
4781 CopLINE_set(PL_curcop, oldline);
4782 if (paramList == PL_beginav)
4783 sv_catpvs(atsv, "BEGIN failed--compilation aborted");
4785 Perl_sv_catpvf(aTHX_ atsv,
4786 "%s failed--call queue aborted",
4787 paramList == PL_checkav ? "CHECK"
4788 : paramList == PL_initav ? "INIT"
4789 : paramList == PL_unitcheckav ? "UNITCHECK"
4791 while (PL_scopestack_ix > oldscope)
4794 Perl_croak(aTHX_ "%"SVf"", SVfARG(atsv));
4801 /* my_exit() was called */
4802 while (PL_scopestack_ix > oldscope)
4805 SET_CURSTASH(PL_defstash);
4806 PL_curcop = &PL_compiling;
4807 CopLINE_set(PL_curcop, oldline);
4810 assert(0); /* NOTREACHED */
4813 PL_curcop = &PL_compiling;
4814 CopLINE_set(PL_curcop, oldline);
4817 PerlIO_printf(Perl_error_log, "panic: restartop in call_list\n");
4826 Perl_my_exit(pTHX_ U32 status)
4837 STATUS_EXIT_SET(status);
4844 Perl_my_failure_exit(pTHX)
4848 /* We have been called to fall on our sword. The desired exit code
4849 * should be already set in STATUS_UNIX, but could be shifted over
4850 * by 8 bits. STATUS_UNIX_EXIT_SET will handle the cases where a
4853 * If an error code has not been set, then force the issue.
4855 if (MY_POSIX_EXIT) {
4857 /* According to the die_exit.t tests, if errno is non-zero */
4858 /* It should be used for the error status. */
4860 if (errno == EVMSERR) {
4861 STATUS_NATIVE = vaxc$errno;
4864 /* According to die_exit.t tests, if the child_exit code is */
4865 /* also zero, then we need to exit with a code of 255 */
4866 if ((errno != 0) && (errno < 256))
4867 STATUS_UNIX_EXIT_SET(errno);
4868 else if (STATUS_UNIX < 255) {
4869 STATUS_UNIX_EXIT_SET(255);
4874 /* The exit code could have been set by $? or vmsish which
4875 * means that it may not have fatal set. So convert
4876 * success/warning codes to fatal with out changing
4877 * the POSIX status code. The severity makes VMS native
4878 * status handling work, while UNIX mode programs use the
4879 * the POSIX exit codes.
4881 if ((STATUS_NATIVE & (STS$K_SEVERE|STS$K_ERROR)) == 0) {
4882 STATUS_NATIVE &= STS$M_COND_ID;
4883 STATUS_NATIVE |= STS$K_ERROR | STS$M_INHIB_MSG;
4887 /* Traditionally Perl on VMS always expects a Fatal Error. */
4888 if (vaxc$errno & 1) {
4890 /* So force success status to failure */
4891 if (STATUS_NATIVE & 1)
4896 STATUS_UNIX = EINTR; /* In case something cares */
4901 STATUS_NATIVE = vaxc$errno; /* Should already be this */
4903 /* Encode the severity code */
4904 severity = STATUS_NATIVE & STS$M_SEVERITY;
4905 STATUS_UNIX = (severity ? severity : 1) << 8;
4907 /* Perl expects this to be a fatal error */
4908 if (severity != STS$K_SEVERE)
4917 STATUS_UNIX_SET(errno);
4919 exitstatus = STATUS_UNIX >> 8;
4920 if (exitstatus & 255)
4921 STATUS_UNIX_SET(exitstatus);
4923 STATUS_UNIX_SET(255);
4930 S_my_exit_jump(pTHX)
4935 SvREFCNT_dec(PL_e_script);
4939 POPSTACK_TO(PL_mainstack);
4947 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen)
4950 const char * const p = SvPVX_const(PL_e_script);
4951 const char *nl = strchr(p, '\n');
4953 PERL_UNUSED_ARG(idx);
4954 PERL_UNUSED_ARG(maxlen);
4956 nl = (nl) ? nl+1 : SvEND(PL_e_script);
4958 filter_del(read_e_script);
4961 sv_catpvn(buf_sv, p, nl-p);
4962 sv_chop(PL_e_script, nl);
4968 * c-indentation-style: bsd
4970 * indent-tabs-mode: nil
4973 * ex: set ts=8 sts=4 sw=4 et: