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);
2195 if ((s = PerlEnv_getenv("PERL_XMLDUMP"))) {
2199 PL_xmlfp = PerlIO_stdout();
2201 PL_xmlfp = PerlIO_open(s, "w");
2203 Perl_croak(aTHX_ "Can't open %s", s);
2205 my_setenv("PERL_XMLDUMP", NULL); /* hide from subprocs */
2211 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2212 PL_madskills = atoi(s);
2213 my_setenv("PERL_MADSKILLS", NULL); /* hide from subprocs */
2218 lex_start(linestr_sv, rsfp, lex_start_flags);
2220 SvREFCNT_dec(linestr_sv);
2222 PL_subname = newSVpvs("main");
2224 if (add_read_e_script)
2225 filter_add(read_e_script, NULL);
2227 /* now parse the script */
2229 SETERRNO(0,SS_NORMAL);
2230 if (yyparse(GRAMPROG) || PL_parser->error_count) {
2232 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
2234 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
2238 CopLINE_set(PL_curcop, 0);
2239 SET_CURSTASH(PL_defstash);
2241 SvREFCNT_dec(PL_e_script);
2249 SAVECOPFILE(PL_curcop);
2250 SAVECOPLINE(PL_curcop);
2251 gv_check(PL_defstash);
2260 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2261 dump_mstats("after compilation:");
2266 PL_restartjmpenv = NULL;
2272 =for apidoc perl_run
2274 Tells a Perl interpreter to run. See L<perlembed>.
2287 PERL_ARGS_ASSERT_PERL_RUN;
2288 #ifndef MULTIPLICITY
2289 PERL_UNUSED_ARG(my_perl);
2292 oldscope = PL_scopestack_ix;
2300 cxstack_ix = -1; /* start context stack again */
2302 case 0: /* normal completion */
2306 case 2: /* my_exit() */
2307 while (PL_scopestack_ix > oldscope)
2310 SET_CURSTASH(PL_defstash);
2311 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
2312 PL_endav && !PL_minus_c) {
2313 PERL_SET_PHASE(PERL_PHASE_END);
2314 call_list(oldscope, PL_endav);
2317 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2318 dump_mstats("after execution: ");
2324 POPSTACK_TO(PL_mainstack);
2327 PerlIO_printf(Perl_error_log, "panic: restartop in perl_run\n");
2338 S_run_body(pTHX_ I32 oldscope)
2341 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
2342 PL_sawampersand ? "Enabling" : "Omitting"));
2344 if (!PL_restartop) {
2348 exit(0); /* less likely to core dump than my_exit(0) */
2352 if (DEBUG_x_TEST || DEBUG_B_TEST)
2353 dump_all_perl(!DEBUG_B_TEST);
2355 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
2359 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
2362 if (PERLDB_SINGLE && PL_DBsingle)
2363 sv_setiv(PL_DBsingle, 1);
2365 PERL_SET_PHASE(PERL_PHASE_INIT);
2366 call_list(oldscope, PL_initav);
2368 #ifdef PERL_DEBUG_READONLY_OPS
2369 if (PL_main_root && PL_main_root->op_slabbed)
2370 Slab_to_ro(OpSLAB(PL_main_root));
2376 PERL_SET_PHASE(PERL_PHASE_RUN);
2379 PL_restartjmpenv = NULL;
2380 PL_op = PL_restartop;
2384 else if (PL_main_start) {
2385 CvDEPTH(PL_main_cv) = 1;
2386 PL_op = PL_main_start;
2390 assert(0); /* NOTREACHED */
2394 =head1 SV Manipulation Functions
2396 =for apidoc p||get_sv
2398 Returns the SV of the specified Perl scalar. C<flags> are passed to
2399 C<gv_fetchpv>. If C<GV_ADD> is set and the
2400 Perl variable does not exist then it will be created. If C<flags> is zero
2401 and the variable does not exist then NULL is returned.
2407 Perl_get_sv(pTHX_ const char *name, I32 flags)
2411 PERL_ARGS_ASSERT_GET_SV;
2413 gv = gv_fetchpv(name, flags, SVt_PV);
2420 =head1 Array Manipulation Functions
2422 =for apidoc p||get_av
2424 Returns the AV of the specified Perl global or package array with the given
2425 name (so it won't work on lexical variables). C<flags> are passed
2426 to C<gv_fetchpv>. If C<GV_ADD> is set and the
2427 Perl variable does not exist then it will be created. If C<flags> is zero
2428 and the variable does not exist then NULL is returned.
2430 Perl equivalent: C<@{"$name"}>.
2436 Perl_get_av(pTHX_ const char *name, I32 flags)
2438 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
2440 PERL_ARGS_ASSERT_GET_AV;
2450 =head1 Hash Manipulation Functions
2452 =for apidoc p||get_hv
2454 Returns the HV of the specified Perl hash. C<flags> are passed to
2455 C<gv_fetchpv>. If C<GV_ADD> is set and the
2456 Perl variable does not exist then it will be created. If C<flags> is zero
2457 and the variable does not exist then NULL is returned.
2463 Perl_get_hv(pTHX_ const char *name, I32 flags)
2465 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
2467 PERL_ARGS_ASSERT_GET_HV;
2477 =head1 CV Manipulation Functions
2479 =for apidoc p||get_cvn_flags
2481 Returns the CV of the specified Perl subroutine. C<flags> are passed to
2482 C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2483 exist then it will be declared (which has the same effect as saying
2484 C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2485 then NULL is returned.
2487 =for apidoc p||get_cv
2489 Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
2495 Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
2497 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
2499 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2501 /* XXX this is probably not what they think they're getting.
2502 * It has the same effect as "sub name;", i.e. just a forward
2504 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
2505 return newSTUB(gv,0);
2512 /* Nothing in core calls this now, but we can't replace it with a macro and
2513 move it to mathoms.c as a macro would evaluate name twice. */
2515 Perl_get_cv(pTHX_ const char *name, I32 flags)
2517 PERL_ARGS_ASSERT_GET_CV;
2519 return get_cvn_flags(name, strlen(name), flags);
2522 /* Be sure to refetch the stack pointer after calling these routines. */
2526 =head1 Callback Functions
2528 =for apidoc p||call_argv
2530 Performs a callback to the specified named and package-scoped Perl subroutine
2531 with C<argv> (a NULL-terminated array of strings) as arguments. See L<perlcall>.
2533 Approximate Perl equivalent: C<&{"$sub_name"}(@$argv)>.
2539 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
2541 /* See G_* flags in cop.h */
2542 /* null terminated arg list */
2547 PERL_ARGS_ASSERT_CALL_ARGV;
2552 mXPUSHs(newSVpv(*argv,0));
2557 return call_pv(sub_name, flags);
2561 =for apidoc p||call_pv
2563 Performs a callback to the specified Perl sub. See L<perlcall>.
2569 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
2570 /* name of the subroutine */
2571 /* See G_* flags in cop.h */
2573 PERL_ARGS_ASSERT_CALL_PV;
2575 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
2579 =for apidoc p||call_method
2581 Performs a callback to the specified Perl method. The blessed object must
2582 be on the stack. See L<perlcall>.
2588 Perl_call_method(pTHX_ const char *methname, I32 flags)
2589 /* name of the subroutine */
2590 /* See G_* flags in cop.h */
2593 PERL_ARGS_ASSERT_CALL_METHOD;
2595 len = strlen(methname);
2597 /* XXX: sv_2mortal(newSVpvn_share(methname, len)) can be faster */
2598 return call_sv(newSVpvn_flags(methname, len, SVs_TEMP), flags | G_METHOD);
2601 /* May be called with any of a CV, a GV, or an SV containing the name. */
2603 =for apidoc p||call_sv
2605 Performs a callback to the Perl sub whose name is in the SV. See
2612 Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
2613 /* See G_* flags in cop.h */
2616 LOGOP myop; /* fake syntax tree node */
2621 bool oldcatch = CATCH_GET;
2623 OP* const oldop = PL_op;
2626 PERL_ARGS_ASSERT_CALL_SV;
2628 if (flags & G_DISCARD) {
2632 if (!(flags & G_WANT)) {
2633 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2638 Zero(&myop, 1, LOGOP);
2639 myop.op_next = NULL;
2640 if (!(flags & G_NOARGS))
2641 myop.op_flags |= OPf_STACKED;
2642 myop.op_flags |= OP_GIMME_REVERSE(flags);
2646 EXTEND(PL_stack_sp, 1);
2647 *++PL_stack_sp = sv;
2649 oldscope = PL_scopestack_ix;
2651 if (PERLDB_SUB && PL_curstash != PL_debstash
2652 /* Handle first BEGIN of -d. */
2653 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
2654 /* Try harder, since this may have been a sighandler, thus
2655 * curstash may be meaningless. */
2656 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
2657 && !(flags & G_NODEBUG))
2658 PL_op->op_private |= OPpENTERSUB_DB;
2660 if (flags & G_METHOD) {
2661 Zero(&method_op, 1, UNOP);
2662 method_op.op_next = PL_op;
2663 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2664 method_op.op_type = OP_METHOD;
2665 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
2666 myop.op_type = OP_ENTERSUB;
2667 PL_op = (OP*)&method_op;
2670 if (!(flags & G_EVAL)) {
2672 CALL_BODY_SUB((OP*)&myop);
2673 retval = PL_stack_sp - (PL_stack_base + oldmark);
2674 CATCH_SET(oldcatch);
2677 myop.op_other = (OP*)&myop;
2679 create_eval_scope(flags|G_FAKINGEVAL);
2687 CALL_BODY_SUB((OP*)&myop);
2688 retval = PL_stack_sp - (PL_stack_base + oldmark);
2689 if (!(flags & G_KEEPERR)) {
2697 /* my_exit() was called */
2698 SET_CURSTASH(PL_defstash);
2702 assert(0); /* NOTREACHED */
2705 PL_restartjmpenv = NULL;
2706 PL_op = PL_restartop;
2710 PL_stack_sp = PL_stack_base + oldmark;
2711 if ((flags & G_WANT) == G_ARRAY)
2715 *++PL_stack_sp = &PL_sv_undef;
2720 if (PL_scopestack_ix > oldscope)
2721 delete_eval_scope();
2725 if (flags & G_DISCARD) {
2726 PL_stack_sp = PL_stack_base + oldmark;
2735 /* Eval a string. The G_EVAL flag is always assumed. */
2738 =for apidoc p||eval_sv
2740 Tells Perl to C<eval> the string in the SV. It supports the same flags
2741 as C<call_sv>, with the obvious exception of G_EVAL. See L<perlcall>.
2747 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
2749 /* See G_* flags in cop.h */
2753 UNOP myop; /* fake syntax tree node */
2754 VOL I32 oldmark = SP - PL_stack_base;
2757 OP* const oldop = PL_op;
2760 PERL_ARGS_ASSERT_EVAL_SV;
2762 if (flags & G_DISCARD) {
2769 Zero(PL_op, 1, UNOP);
2770 EXTEND(PL_stack_sp, 1);
2771 *++PL_stack_sp = sv;
2773 if (!(flags & G_NOARGS))
2774 myop.op_flags = OPf_STACKED;
2775 myop.op_next = NULL;
2776 myop.op_type = OP_ENTEREVAL;
2777 myop.op_flags |= OP_GIMME_REVERSE(flags);
2778 if (flags & G_KEEPERR)
2779 myop.op_flags |= OPf_SPECIAL;
2780 if (PL_reg_state.re_reparsing)
2781 myop.op_private = OPpEVAL_COPHH;
2783 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2784 * before a PUSHEVAL, which corrupts the stack after a croak */
2785 TAINT_PROPER("eval_sv()");
2791 if (PL_op == (OP*)(&myop)) {
2792 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2794 goto fail; /* failed in compilation */
2797 retval = PL_stack_sp - (PL_stack_base + oldmark);
2798 if (!(flags & G_KEEPERR)) {
2806 /* my_exit() was called */
2807 SET_CURSTASH(PL_defstash);
2811 assert(0); /* NOTREACHED */
2814 PL_restartjmpenv = NULL;
2815 PL_op = PL_restartop;
2820 PL_stack_sp = PL_stack_base + oldmark;
2821 if ((flags & G_WANT) == G_ARRAY)
2825 *++PL_stack_sp = &PL_sv_undef;
2831 if (flags & G_DISCARD) {
2832 PL_stack_sp = PL_stack_base + oldmark;
2842 =for apidoc p||eval_pv
2844 Tells Perl to C<eval> the given string and return an SV* result.
2850 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
2854 SV* sv = newSVpv(p, 0);
2856 PERL_ARGS_ASSERT_EVAL_PV;
2858 eval_sv(sv, G_SCALAR);
2865 if (croak_on_error && SvTRUE(ERRSV)) {
2866 Perl_croak(aTHX_ "%s", SvPVx_nolen_const(ERRSV));
2872 /* Require a module. */
2875 =head1 Embedding Functions
2877 =for apidoc p||require_pv
2879 Tells Perl to C<require> the file named by the string argument. It is
2880 analogous to the Perl code C<eval "require '$file'">. It's even
2881 implemented that way; consider using load_module instead.
2886 Perl_require_pv(pTHX_ const char *pv)
2892 PERL_ARGS_ASSERT_REQUIRE_PV;
2894 PUSHSTACKi(PERLSI_REQUIRE);
2896 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2897 eval_sv(sv_2mortal(sv), G_DISCARD);
2903 S_usage(pTHX) /* XXX move this out into a module ? */
2905 /* This message really ought to be max 23 lines.
2906 * Removed -h because the user already knows that option. Others? */
2908 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
2909 minimum of 509 character string literals. */
2910 static const char * const usage_msg[] = {
2911 " -0[octal] specify record separator (\\0, if no argument)\n"
2912 " -a autosplit mode with -n or -p (splits $_ into @F)\n"
2913 " -C[number/list] enables the listed Unicode features\n"
2914 " -c check syntax only (runs BEGIN and CHECK blocks)\n"
2915 " -d[:debugger] run program under debugger\n"
2916 " -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
2917 " -e program one line of program (several -e's allowed, omit programfile)\n"
2918 " -E program like -e, but enables all optional features\n"
2919 " -f don't do $sitelib/sitecustomize.pl at startup\n"
2920 " -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
2921 " -i[extension] edit <> files in place (makes backup if extension supplied)\n"
2922 " -Idirectory specify @INC/#include directory (several -I's allowed)\n",
2923 " -l[octal] enable line ending processing, specifies line terminator\n"
2924 " -[mM][-]module execute \"use/no module...\" before executing program\n"
2925 " -n assume \"while (<>) { ... }\" loop around program\n"
2926 " -p assume loop like -n but print line also, like sed\n"
2927 " -s enable rudimentary parsing for switches after programfile\n"
2928 " -S look for programfile using PATH environment variable\n",
2929 " -t enable tainting warnings\n"
2930 " -T enable tainting checks\n"
2931 " -u dump core after parsing program\n"
2932 " -U allow unsafe operations\n"
2933 " -v print version, patchlevel and license\n"
2934 " -V[:variable] print configuration summary (or a single Config.pm variable)\n",
2935 " -w enable many useful warnings\n"
2936 " -W enable all warnings\n"
2937 " -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
2938 " -X disable all warnings\n"
2940 "Run 'perldoc perl' for more help with Perl.\n\n",
2943 const char * const *p = usage_msg;
2944 PerlIO *out = PerlIO_stdout();
2947 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
2950 PerlIO_puts(out, *p++);
2954 /* convert a string of -D options (or digits) into an int.
2955 * sets *s to point to the char after the options */
2959 Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
2961 static const char * const usage_msgd[] = {
2962 " Debugging flag values: (see also -d)\n"
2963 " p Tokenizing and parsing (with v, displays parse stack)\n"
2964 " s Stack snapshots (with v, displays all stacks)\n"
2965 " l Context (loop) stack processing\n"
2966 " t Trace execution\n"
2967 " o Method and overloading resolution\n",
2968 " c String/numeric conversions\n"
2969 " P Print profiling info, source file input state\n"
2970 " m Memory and SV allocation\n"
2971 " f Format processing\n"
2972 " r Regular expression parsing and execution\n"
2973 " x Syntax tree dump\n",
2974 " u Tainting checks\n"
2975 " H Hash dump -- usurps values()\n"
2976 " X Scratchpad allocation\n"
2978 " S Op slab allocation\n"
2980 " R Include reference counts of dumped variables (eg when using -Ds)\n",
2981 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
2982 " v Verbose: use in conjunction with other flags\n"
2983 " C Copy On Write\n"
2984 " A Consistency checks on internal structures\n"
2985 " q quiet - currently only suppresses the 'EXECUTING' message\n"
2986 " M trace smart match resolution\n"
2987 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
2992 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
2995 /* if adding extra options, remember to update DEBUG_MASK */
2996 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMB";
2998 for (; isALNUM(**s); (*s)++) {
2999 const char * const d = strchr(debopts,**s);
3001 i |= 1 << (d - debopts);
3002 else if (ckWARN_d(WARN_DEBUGGING))
3003 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3004 "invalid option -D%c, use -D'' to see choices\n", **s);
3007 else if (isDIGIT(**s)) {
3009 for (; isALNUM(**s); (*s)++) ;
3011 else if (givehelp) {
3012 const char *const *p = usage_msgd;
3013 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
3016 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
3017 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3018 "-Dp not implemented on this platform\n");
3024 /* This routine handles any switches that can be given during run */
3027 Perl_moreswitches(pTHX_ const char *s)
3031 const char option = *s; /* used to remember option in -m/-M code */
3033 PERL_ARGS_ASSERT_MORESWITCHES;
3041 SvREFCNT_dec(PL_rs);
3042 if (s[1] == 'x' && s[2]) {
3043 const char *e = s+=2;
3049 flags = PERL_SCAN_SILENT_ILLDIGIT;
3050 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3051 if (s + numlen < e) {
3052 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3056 PL_rs = newSVpvs("");
3057 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
3058 tmps = (U8*)SvPVX(PL_rs);
3059 uvchr_to_utf8(tmps, rschar);
3060 SvCUR_set(PL_rs, UNISKIP(rschar));
3065 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3066 if (rschar & ~((U8)~0))
3067 PL_rs = &PL_sv_undef;
3068 else if (!rschar && numlen >= 2)
3069 PL_rs = newSVpvs("");
3071 char ch = (char)rschar;
3072 PL_rs = newSVpvn(&ch, 1);
3075 sv_setsv(get_sv("/", GV_ADD), PL_rs);
3080 PL_unicode = parse_unicode_opts( (const char **)&s );
3081 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3087 while (*s && !isSPACE(*s)) ++s;
3088 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
3099 forbid_setid('d', FALSE);
3102 /* -dt indicates to the debugger that threads will be used */
3103 if (*s == 't' && !isALNUM(s[1])) {
3105 my_setenv("PERL5DB_THREADED", "1");
3108 /* The following permits -d:Mod to accepts arguments following an =
3109 in the fashion that -MSome::Mod does. */
3110 if (*s == ':' || *s == '=') {
3117 sv = newSVpvs("no Devel::");
3119 sv = newSVpvs("use Devel::");
3123 end = s + strlen(s);
3125 /* We now allow -d:Module=Foo,Bar and -d:-Module */
3126 while(isALNUM(*s) || *s==':') ++s;
3128 sv_catpvn(sv, start, end - start);
3130 sv_catpvn(sv, start, s-start);
3131 /* Don't use NUL as q// delimiter here, this string goes in the
3133 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
3136 my_setenv("PERL5DB", SvPV_nolen_const(sv));
3140 PL_perldb = PERLDB_ALL;
3147 forbid_setid('D', FALSE);
3149 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
3150 #else /* !DEBUGGING */
3151 if (ckWARN_d(WARN_DEBUGGING))
3152 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3153 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
3154 for (s++; isALNUM(*s); s++) ;
3161 Safefree(PL_inplace);
3162 #if defined(__CYGWIN__) /* do backup extension automagically */
3163 if (*(s+1) == '\0') {
3164 PL_inplace = savepvs(".bak");
3167 #endif /* __CYGWIN__ */
3169 const char * const start = ++s;
3170 while (*s && !isSPACE(*s))
3173 PL_inplace = savepvn(start, s - start);
3177 if (*s == '-') /* Additional switches on #! line. */
3181 case 'I': /* -I handled both here and in parse_body() */
3182 forbid_setid('I', FALSE);
3184 while (*s && isSPACE(*s))
3189 /* ignore trailing spaces (possibly followed by other switches) */
3191 for (e = p; *e && !isSPACE(*e); e++) ;
3195 } while (*p && *p != '-');
3197 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
3203 Perl_croak(aTHX_ "No directory specified for -I");
3209 SvREFCNT_dec(PL_ors_sv);
3215 PL_ors_sv = newSVpvs("\n");
3216 numlen = 3 + (*s == '0');
3217 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
3221 if (RsPARA(PL_rs)) {
3222 PL_ors_sv = newSVpvs("\n\n");
3225 PL_ors_sv = newSVsv(PL_rs);
3230 forbid_setid('M', FALSE); /* XXX ? */
3233 forbid_setid('m', FALSE); /* XXX ? */
3238 const char *use = "use ";
3240 /* -M-foo == 'no foo' */
3241 /* Leading space on " no " is deliberate, to make both
3242 possibilities the same length. */
3243 if (*s == '-') { use = " no "; ++s; }
3244 sv = newSVpvn(use,4);
3246 /* We allow -M'Module qw(Foo Bar)' */
3247 while(isALNUM(*s) || *s==':') {
3256 Perl_croak(aTHX_ "Module name required with -%c option",
3259 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3260 "contains single ':'",
3261 (int)(s - start), start, option);
3262 end = s + strlen(s);
3264 sv_catpvn(sv, start, end - start);
3265 if (option == 'm') {
3267 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
3268 sv_catpvs( sv, " ()");
3271 sv_catpvn(sv, start, s-start);
3272 /* Use NUL as q''-delimiter. */
3273 sv_catpvs(sv, " split(/,/,q\0");
3275 sv_catpvn(sv, s, end - s);
3276 sv_catpvs(sv, "\0)");
3279 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
3282 Perl_croak(aTHX_ "Missing argument to -%c", option);
3293 forbid_setid('s', FALSE);
3294 PL_doswitches = TRUE;
3304 PL_do_undump = TRUE;
3314 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
3315 PL_dowarn |= G_WARN_ON;
3320 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
3321 if (!specialWARN(PL_compiling.cop_warnings))
3322 PerlMemShared_free(PL_compiling.cop_warnings);
3323 PL_compiling.cop_warnings = pWARN_ALL ;
3327 PL_dowarn = G_WARN_ALL_OFF;
3328 if (!specialWARN(PL_compiling.cop_warnings))
3329 PerlMemShared_free(PL_compiling.cop_warnings);
3330 PL_compiling.cop_warnings = pWARN_NONE ;
3337 if (s[0] == '-') /* Additional switches on #! line. */
3342 #if defined(WIN32) || !defined(PERL_STRICT_CR)
3348 #ifdef ALTERNATE_SHEBANG
3349 case 'S': /* OS/2 needs -S on "extproc" line. */
3352 case 'e': case 'f': case 'x': case 'E':
3353 #ifndef ALTERNATE_SHEBANG
3357 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
3360 "Unrecognized switch: -%.1s (-h will show valid options)",s
3370 if (!sv_derived_from(PL_patchlevel, "version"))
3371 upg_version(PL_patchlevel, TRUE);
3374 SV* level= vstringify(PL_patchlevel);
3375 #ifdef PERL_PATCHNUM
3376 # ifdef PERL_GIT_UNCOMMITTED_CHANGES
3377 SV *num = newSVpvs(PERL_PATCHNUM "*");
3379 SV *num = newSVpvs(PERL_PATCHNUM);
3382 if (sv_len(num)>=sv_len(level) && strnEQ(SvPV_nolen(num),SvPV_nolen(level),sv_len(level))) {
3383 SvREFCNT_dec(level);
3386 Perl_sv_catpvf(aTHX_ level, " (%"SVf")", num);
3390 PerlIO_printf(PerlIO_stdout(),
3391 "\nThis is perl " STRINGIFY(PERL_REVISION)
3392 ", version " STRINGIFY(PERL_VERSION)
3393 ", subversion " STRINGIFY(PERL_SUBVERSION)
3394 " (%"SVf") built for " ARCHNAME, level
3396 SvREFCNT_dec(level);
3399 /* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3400 PerlIO_printf(PerlIO_stdout(),
3401 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
3402 SVfARG(vstringify(PL_patchlevel))));
3403 PerlIO_printf(PerlIO_stdout(),
3404 Perl_form(aTHX_ " built under %s at %s %s\n",
3405 OSNAME, __DATE__, __TIME__));
3406 PerlIO_printf(PerlIO_stdout(),
3407 Perl_form(aTHX_ " OS Specific Release: %s\n",
3410 #if defined(LOCAL_PATCH_COUNT)
3411 if (LOCAL_PATCH_COUNT > 0)
3412 PerlIO_printf(PerlIO_stdout(),
3413 "\n(with %d registered patch%s, "
3414 "see perl -V for more detail)",
3416 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
3419 PerlIO_printf(PerlIO_stdout(),
3420 "\n\nCopyright 1987-2012, Larry Wall\n");
3422 PerlIO_printf(PerlIO_stdout(),
3423 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
3426 PerlIO_printf(PerlIO_stdout(),
3427 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3428 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
3431 PerlIO_printf(PerlIO_stdout(),
3432 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
3433 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
3436 PerlIO_printf(PerlIO_stdout(),
3437 "BeOS port Copyright Tom Spindler, 1997-1999\n");
3440 PerlIO_printf(PerlIO_stdout(),
3441 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n");
3444 PerlIO_printf(PerlIO_stdout(),
3445 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
3448 PerlIO_printf(PerlIO_stdout(),
3449 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
3452 PerlIO_printf(PerlIO_stdout(),
3453 "VM/ESA port by Neale Ferguson, 1998-1999\n");
3456 PerlIO_printf(PerlIO_stdout(),
3457 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
3460 PerlIO_printf(PerlIO_stdout(),
3461 "EPOC port by Olaf Flebbe, 1999-2002\n");
3464 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
3465 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
3468 #ifdef __SYMBIAN32__
3469 PerlIO_printf(PerlIO_stdout(),
3470 "Symbian port by Nokia, 2004-2005\n");
3472 #ifdef BINARY_BUILD_NOTICE
3473 BINARY_BUILD_NOTICE;
3475 PerlIO_printf(PerlIO_stdout(),
3477 Perl may be copied only under the terms of either the Artistic License or the\n\
3478 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
3479 Complete documentation for Perl, including FAQ lists, should be found on\n\
3480 this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
3481 Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
3485 /* compliments of Tom Christiansen */
3487 /* unexec() can be found in the Gnu emacs distribution */
3488 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
3491 #include <lib$routines.h>
3495 Perl_my_unexec(pTHX)
3497 PERL_UNUSED_CONTEXT;
3499 SV * prog = newSVpv(BIN_EXP, 0);
3500 SV * file = newSVpv(PL_origfilename, 0);
3504 sv_catpvs(prog, "/perl");
3505 sv_catpvs(file, ".perldump");
3507 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3508 /* unexec prints msg to stderr in case of failure */
3509 PerlProc_exit(status);
3512 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
3513 # elif defined(WIN32) || defined(__CYGWIN__)
3514 Perl_croak(aTHX_ "dump is not supported");
3516 ABORT(); /* for use with undump */
3521 /* initialize curinterp */
3527 # define PERLVAR(prefix,var,type)
3528 # define PERLVARA(prefix,var,n,type)
3529 # if defined(PERL_IMPLICIT_CONTEXT)
3530 # define PERLVARI(prefix,var,type,init) aTHX->prefix##var = init;
3531 # define PERLVARIC(prefix,var,type,init) aTHX->prefix##var = init;
3533 # define PERLVARI(prefix,var,type,init) PERL_GET_INTERP->var = init;
3534 # define PERLVARIC(prefix,var,type,init) PERL_GET_INTERP->var = init;
3536 # include "intrpvar.h"
3542 # define PERLVAR(prefix,var,type)
3543 # define PERLVARA(prefix,var,n,type)
3544 # define PERLVARI(prefix,var,type,init) PL_##var = init;
3545 # define PERLVARIC(prefix,var,type,init) PL_##var = init;
3546 # include "intrpvar.h"
3553 /* As these are inside a structure, PERLVARI isn't capable of initialising
3555 PL_reg_oldcurpm = PL_reg_curpm = NULL;
3556 PL_reg_poscache = PL_reg_starttry = NULL;
3560 S_init_main_stash(pTHX)
3565 PL_curstash = PL_defstash = (HV *)SvREFCNT_inc_simple_NN(newHV());
3566 /* We know that the string "main" will be in the global shared string
3567 table, so it's a small saving to use it rather than allocate another
3569 PL_curstname = newSVpvs_share("main");
3570 gv = gv_fetchpvs("main::", GV_ADD|GV_NOTQUAL, SVt_PVHV);
3571 /* If we hadn't caused another reference to "main" to be in the shared
3572 string table above, then it would be worth reordering these two,
3573 because otherwise all we do is delete "main" from it as a consequence
3574 of the SvREFCNT_dec, only to add it again with hv_name_set */
3575 SvREFCNT_dec(GvHV(gv));
3576 hv_name_set(PL_defstash, "main", 4, 0);
3577 GvHV(gv) = MUTABLE_HV(SvREFCNT_inc_simple(PL_defstash));
3579 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpvs("INC", GV_ADD|GV_NOTQUAL,
3581 SvREFCNT_inc_simple_void(PL_incgv); /* Don't allow it to be freed */
3582 GvMULTI_on(PL_incgv);
3583 PL_hintgv = gv_fetchpvs("\010", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^H */
3584 GvMULTI_on(PL_hintgv);
3585 PL_defgv = gv_fetchpvs("_", GV_ADD|GV_NOTQUAL, SVt_PVAV);
3586 SvREFCNT_inc_simple_void(PL_defgv);
3587 PL_errgv = gv_HVadd(gv_fetchpvs("@", GV_ADD|GV_NOTQUAL, SVt_PV));
3588 SvREFCNT_inc_simple_void(PL_errgv);
3589 GvMULTI_on(PL_errgv);
3590 PL_replgv = gv_fetchpvs("\022", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^R */
3591 GvMULTI_on(PL_replgv);
3592 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
3593 #ifdef PERL_DONT_CREATE_GVSV
3596 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
3598 SET_CURSTASH(PL_defstash);
3599 CopSTASH_set(&PL_compiling, PL_defstash);
3600 PL_debstash = GvHV(gv_fetchpvs("DB::", GV_ADDMULTI, SVt_PVHV));
3601 PL_globalstash = GvHV(gv_fetchpvs("CORE::GLOBAL::", GV_ADDMULTI,
3603 /* We must init $/ before switches are processed. */
3604 sv_setpvs(get_sv("/", GV_ADD), "\n");
3608 S_open_script(pTHX_ const char *scriptname, bool dosearch, bool *suidscript)
3611 PerlIO *rsfp = NULL;
3614 PERL_ARGS_ASSERT_OPEN_SCRIPT;
3617 PL_origfilename = savepvs("-e");
3620 /* if find_script() returns, it returns a malloc()-ed value */
3621 scriptname = PL_origfilename = find_script(scriptname, dosearch, NULL, 1);
3623 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
3624 const char *s = scriptname + 8;
3630 * Tell apart "normal" usage of fdscript, e.g.
3631 * with bash on FreeBSD:
3632 * perl <( echo '#!perl -DA'; echo 'print "$0\n"')
3633 * from usage in suidperl.
3634 * Does any "normal" usage leave garbage after the number???
3635 * Is it a mistake to use a similar /dev/fd/ construct for
3640 * Be supersafe and do some sanity-checks.
3641 * Still, can we be sure we got the right thing?
3644 Perl_croak(aTHX_ "Wrong syntax (suid) fd script name \"%s\"\n", s);
3647 Perl_croak(aTHX_ "Missing (suid) fd script name\n");
3649 scriptname = savepv(s + 1);
3650 Safefree(PL_origfilename);
3651 PL_origfilename = (char *)scriptname;
3656 CopFILE_free(PL_curcop);
3657 CopFILE_set(PL_curcop, PL_origfilename);
3658 if (*PL_origfilename == '-' && PL_origfilename[1] == '\0')
3659 scriptname = (char *)"";
3660 if (fdscript >= 0) {
3661 rsfp = PerlIO_fdopen(fdscript,PERL_SCRIPT_MODE);
3663 else if (!*scriptname) {
3664 forbid_setid(0, *suidscript);
3668 #ifdef FAKE_BIT_BUCKET
3669 /* This hack allows one not to have /dev/null (or BIT_BUCKET as it
3670 * is called) and still have the "-e" work. (Believe it or not,
3671 * a /dev/null is required for the "-e" to work because source
3672 * filter magic is used to implement it. ) This is *not* a general
3673 * replacement for a /dev/null. What we do here is create a temp
3674 * file (an empty file), open up that as the script, and then
3675 * immediately close and unlink it. Close enough for jazz. */
3676 #define FAKE_BIT_BUCKET_PREFIX "/tmp/perlnull-"
3677 #define FAKE_BIT_BUCKET_SUFFIX "XXXXXXXX"
3678 #define FAKE_BIT_BUCKET_TEMPLATE FAKE_BIT_BUCKET_PREFIX FAKE_BIT_BUCKET_SUFFIX
3679 char tmpname[sizeof(FAKE_BIT_BUCKET_TEMPLATE)] = {
3680 FAKE_BIT_BUCKET_TEMPLATE
3682 const char * const err = "Failed to create a fake bit bucket";
3683 if (strEQ(scriptname, BIT_BUCKET)) {
3684 #ifdef HAS_MKSTEMP /* Hopefully mkstemp() is safe here. */
3685 int tmpfd = mkstemp(tmpname);
3687 scriptname = tmpname;
3690 Perl_croak(aTHX_ err);
3693 scriptname = mktemp(tmpname);
3695 Perl_croak(aTHX_ err);
3700 rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
3701 #ifdef FAKE_BIT_BUCKET
3702 if (memEQ(scriptname, FAKE_BIT_BUCKET_PREFIX,
3703 sizeof(FAKE_BIT_BUCKET_PREFIX) - 1)
3704 && strlen(scriptname) == sizeof(tmpname) - 1) {
3707 scriptname = BIT_BUCKET;
3711 /* PSz 16 Sep 03 Keep neat error message */
3713 Perl_croak(aTHX_ "Can't open "BIT_BUCKET": %s\n", Strerror(errno));
3715 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3716 CopFILE(PL_curcop), Strerror(errno));
3718 #if defined(HAS_FCNTL) && defined(F_SETFD)
3719 /* ensure close-on-exec */
3720 fcntl(PerlIO_fileno(rsfp), F_SETFD, 1);
3726 * I_SYSSTATVFS HAS_FSTATVFS
3728 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
3729 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
3730 * here so that metaconfig picks them up. */
3733 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
3734 /* Don't even need this function. */
3737 S_validate_suid(pTHX_ PerlIO *rsfp)
3739 const UV my_uid = PerlProc_getuid();
3740 const UV my_euid = PerlProc_geteuid();
3741 const UV my_gid = PerlProc_getgid();
3742 const UV my_egid = PerlProc_getegid();
3744 PERL_ARGS_ASSERT_VALIDATE_SUID;
3746 if (my_euid != my_uid || my_egid != my_gid) { /* (suidperl doesn't exist, in fact) */
3749 PerlLIO_fstat(PerlIO_fileno(rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3750 if ((my_euid != my_uid && my_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3752 (my_egid != my_gid && my_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3755 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3756 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3757 /* not set-id, must be wrapped */
3760 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3763 S_find_beginning(pTHX_ SV* linestr_sv, PerlIO *rsfp)
3767 register const char *s2;
3769 PERL_ARGS_ASSERT_FIND_BEGINNING;
3771 /* skip forward in input to the real script? */
3774 if ((s = sv_gets(linestr_sv, rsfp, 0)) == NULL)
3775 Perl_croak(aTHX_ "No Perl script found in input\n");
3777 } while (!(*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))));
3778 PerlIO_ungetc(rsfp, '\n'); /* to keep line count right */
3779 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3781 while (*s == ' ' || *s == '\t') s++;
3783 while (isDIGIT(s2[-1]) || s2[-1] == '-' || s2[-1] == '.'
3784 || s2[-1] == '_') s2--;
3785 if (strnEQ(s2-4,"perl",4))
3786 while ((s = moreswitches(s)))
3796 const UV my_uid = PerlProc_getuid();
3797 const UV my_euid = PerlProc_geteuid();
3798 const UV my_gid = PerlProc_getgid();
3799 const UV my_egid = PerlProc_getegid();
3801 /* Should not happen: */
3802 CHECK_MALLOC_TAINT(my_uid && (my_euid != my_uid || my_egid != my_gid));
3803 PL_tainting |= (my_uid && (my_euid != my_uid || my_egid != my_gid));
3806 * Should go by suidscript, not uid!=euid: why disallow
3807 * system("ls") in scripts run from setuid things?
3808 * Or, is this run before we check arguments and set suidscript?
3809 * What about SETUID_SCRIPTS_ARE_SECURE_NOW: could we use fdscript then?
3810 * (We never have suidscript, can we be sure to have fdscript?)
3811 * Or must then go by UID checks? See comments in forbid_setid also.
3815 /* This is used very early in the lifetime of the program,
3816 * before even the options are parsed, so PL_tainting has
3817 * not been initialized properly. */
3819 Perl_doing_taint(int argc, char *argv[], char *envp[])
3821 #ifndef PERL_IMPLICIT_SYS
3822 /* If we have PERL_IMPLICIT_SYS we can't call getuid() et alia
3823 * before we have an interpreter-- and the whole point of this
3824 * function is to be called at such an early stage. If you are on
3825 * a system with PERL_IMPLICIT_SYS but you do have a concept of
3826 * "tainted because running with altered effective ids', you'll
3827 * have to add your own checks somewhere in here. The two most
3828 * known samples of 'implicitness' are Win32 and NetWare, neither
3829 * of which has much of concept of 'uids'. */
3830 int uid = PerlProc_getuid();
3831 int euid = PerlProc_geteuid();
3832 int gid = PerlProc_getgid();
3833 int egid = PerlProc_getegid();
3840 if (uid && (euid != uid || egid != gid))
3842 #endif /* !PERL_IMPLICIT_SYS */
3843 /* This is a really primitive check; environment gets ignored only
3844 * if -T are the first chars together; otherwise one gets
3845 * "Too late" message. */
3846 if ( argc > 1 && argv[1][0] == '-'
3847 && (argv[1][1] == 't' || argv[1][1] == 'T') )
3852 /* Passing the flag as a single char rather than a string is a slight space
3853 optimisation. The only message that isn't /^-.$/ is
3854 "program input from stdin", which is substituted in place of '\0', which
3855 could never be a command line flag. */
3857 S_forbid_setid(pTHX_ const char flag, const bool suidscript) /* g */
3860 char string[3] = "-x";
3861 const char *message = "program input from stdin";
3868 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
3869 if (PerlProc_getuid() != PerlProc_geteuid())
3870 Perl_croak(aTHX_ "No %s allowed while running setuid", message);
3871 if (PerlProc_getgid() != PerlProc_getegid())
3872 Perl_croak(aTHX_ "No %s allowed while running setgid", message);
3873 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3875 Perl_croak(aTHX_ "No %s allowed with (suid) fdscript", message);
3879 Perl_init_dbargs(pTHX)
3881 AV *const args = PL_dbargs = GvAV(gv_AVadd((gv_fetchpvs("DB::args",
3886 /* Someone has already created it.
3887 It might have entries, and if we just turn off AvREAL(), they will
3888 "leak" until global destruction. */
3890 if (SvTIED_mg((const SV *)args, PERL_MAGIC_tied))
3891 Perl_croak(aTHX_ "Cannot set tied @DB::args");
3893 AvREIFY_only(PL_dbargs);
3897 Perl_init_debugger(pTHX)
3900 HV * const ostash = PL_curstash;
3902 PL_curstash = (HV *)SvREFCNT_inc_simple(PL_debstash);
3904 Perl_init_dbargs(aTHX);
3905 PL_DBgv = gv_fetchpvs("DB::DB", GV_ADDMULTI, SVt_PVGV);
3906 PL_DBline = gv_fetchpvs("DB::dbline", GV_ADDMULTI, SVt_PVAV);
3907 PL_DBsub = gv_HVadd(gv_fetchpvs("DB::sub", GV_ADDMULTI, SVt_PVHV));
3908 PL_DBsingle = GvSV((gv_fetchpvs("DB::single", GV_ADDMULTI, SVt_PV)));
3909 if (!SvIOK(PL_DBsingle))
3910 sv_setiv(PL_DBsingle, 0);
3911 PL_DBtrace = GvSV((gv_fetchpvs("DB::trace", GV_ADDMULTI, SVt_PV)));
3912 if (!SvIOK(PL_DBtrace))
3913 sv_setiv(PL_DBtrace, 0);
3914 PL_DBsignal = GvSV((gv_fetchpvs("DB::signal", GV_ADDMULTI, SVt_PV)));
3915 if (!SvIOK(PL_DBsignal))
3916 sv_setiv(PL_DBsignal, 0);
3917 SvREFCNT_dec(PL_curstash);
3918 PL_curstash = ostash;
3921 #ifndef STRESS_REALLOC
3922 #define REASONABLE(size) (size)
3924 #define REASONABLE(size) (1) /* unreasonable */
3928 Perl_init_stacks(pTHX)
3931 /* start with 128-item stack and 8K cxstack */
3932 PL_curstackinfo = new_stackinfo(REASONABLE(128),
3933 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3934 PL_curstackinfo->si_type = PERLSI_MAIN;
3935 PL_curstack = PL_curstackinfo->si_stack;
3936 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
3938 PL_stack_base = AvARRAY(PL_curstack);
3939 PL_stack_sp = PL_stack_base;
3940 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
3942 Newx(PL_tmps_stack,REASONABLE(128),SV*);
3945 PL_tmps_max = REASONABLE(128);
3947 Newx(PL_markstack,REASONABLE(32),I32);
3948 PL_markstack_ptr = PL_markstack;
3949 PL_markstack_max = PL_markstack + REASONABLE(32);
3953 Newx(PL_scopestack,REASONABLE(32),I32);
3955 Newx(PL_scopestack_name,REASONABLE(32),const char*);
3957 PL_scopestack_ix = 0;
3958 PL_scopestack_max = REASONABLE(32);
3960 Newx(PL_savestack,REASONABLE(128),ANY);
3961 PL_savestack_ix = 0;
3962 PL_savestack_max = REASONABLE(128);
3971 while (PL_curstackinfo->si_next)
3972 PL_curstackinfo = PL_curstackinfo->si_next;
3973 while (PL_curstackinfo) {
3974 PERL_SI *p = PL_curstackinfo->si_prev;
3975 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3976 Safefree(PL_curstackinfo->si_cxstack);
3977 Safefree(PL_curstackinfo);
3978 PL_curstackinfo = p;
3980 Safefree(PL_tmps_stack);
3981 Safefree(PL_markstack);
3982 Safefree(PL_scopestack);
3984 Safefree(PL_scopestack_name);
3986 Safefree(PL_savestack);
3990 Perl_populate_isa(pTHX_ const char *name, STRLEN len, ...)
3992 GV *const gv = gv_fetchpvn(name, len, GV_ADD | GV_ADDMULTI, SVt_PVAV);
3993 AV *const isa = GvAVn(gv);
3996 PERL_ARGS_ASSERT_POPULATE_ISA;
3998 if(AvFILLp(isa) != -1)
4001 /* NOTE: No support for tied ISA */
4003 va_start(args, len);
4005 const char *const parent = va_arg(args, const char*);
4010 parent_len = va_arg(args, size_t);
4012 /* Arguments are supplied with a trailing :: */
4013 assert(parent_len > 2);
4014 assert(parent[parent_len - 1] == ':');
4015 assert(parent[parent_len - 2] == ':');
4016 av_push(isa, newSVpvn(parent, parent_len - 2));
4017 (void) gv_fetchpvn(parent, parent_len, GV_ADD, SVt_PVGV);
4024 S_init_predump_symbols(pTHX)
4030 sv_setpvs(get_sv("\"", GV_ADD), " ");
4031 PL_ofsgv = (GV*)SvREFCNT_inc(gv_fetchpvs(",", GV_ADD|GV_NOTQUAL, SVt_PV));
4034 /* Historically, PVIOs were blessed into IO::Handle, unless
4035 FileHandle was loaded, in which case they were blessed into
4036 that. Action at a distance.
4037 However, if we simply bless into IO::Handle, we break code
4038 that assumes that PVIOs will have (among others) a seek
4039 method. IO::File inherits from IO::Handle and IO::Seekable,
4040 and provides the needed methods. But if we simply bless into
4041 it, then we break code that assumed that by loading
4042 IO::Handle, *it* would work.
4043 So a compromise is to set up the correct @IO::File::ISA,
4044 so that code that does C<use IO::Handle>; will still work.
4047 Perl_populate_isa(aTHX_ STR_WITH_LEN("IO::File::ISA"),
4048 STR_WITH_LEN("IO::Handle::"),
4049 STR_WITH_LEN("IO::Seekable::"),
4050 STR_WITH_LEN("Exporter::"),
4053 PL_stdingv = gv_fetchpvs("STDIN", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4054 GvMULTI_on(PL_stdingv);
4055 io = GvIOp(PL_stdingv);
4056 IoTYPE(io) = IoTYPE_RDONLY;
4057 IoIFP(io) = PerlIO_stdin();
4058 tmpgv = gv_fetchpvs("stdin", GV_ADD|GV_NOTQUAL, SVt_PV);
4060 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4062 tmpgv = gv_fetchpvs("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4065 IoTYPE(io) = IoTYPE_WRONLY;
4066 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
4068 tmpgv = gv_fetchpvs("stdout", GV_ADD|GV_NOTQUAL, SVt_PV);
4070 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4072 PL_stderrgv = gv_fetchpvs("STDERR", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4073 GvMULTI_on(PL_stderrgv);
4074 io = GvIOp(PL_stderrgv);
4075 IoTYPE(io) = IoTYPE_WRONLY;
4076 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
4077 tmpgv = gv_fetchpvs("stderr", GV_ADD|GV_NOTQUAL, SVt_PV);
4079 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4081 PL_statname = newSVpvs(""); /* last filename we did stat on */
4085 Perl_init_argv_symbols(pTHX_ register int argc, register char **argv)
4089 PERL_ARGS_ASSERT_INIT_ARGV_SYMBOLS;
4091 argc--,argv++; /* skip name of script */
4092 if (PL_doswitches) {
4093 for (; argc > 0 && **argv == '-'; argc--,argv++) {
4097 if (argv[0][1] == '-' && !argv[0][2]) {
4101 if ((s = strchr(argv[0], '='))) {
4102 const char *const start_name = argv[0] + 1;
4103 sv_setpv(GvSV(gv_fetchpvn_flags(start_name, s - start_name,
4104 TRUE, SVt_PV)), s + 1);
4107 sv_setiv(GvSV(gv_fetchpv(argv[0]+1, GV_ADD, SVt_PV)),1);
4110 if ((PL_argvgv = gv_fetchpvs("ARGV", GV_ADD|GV_NOTQUAL, SVt_PVAV))) {
4111 GvMULTI_on(PL_argvgv);
4112 (void)gv_AVadd(PL_argvgv);
4113 av_clear(GvAVn(PL_argvgv));
4114 for (; argc > 0; argc--,argv++) {
4115 SV * const sv = newSVpv(argv[0],0);
4116 av_push(GvAVn(PL_argvgv),sv);
4117 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
4118 if (PL_unicode & PERL_UNICODE_ARGV_FLAG)
4121 if (PL_unicode & PERL_UNICODE_WIDESYSCALLS_FLAG) /* Sarathy? */
4122 (void)sv_utf8_decode(sv);
4126 if (PL_inplace && (!PL_argvgv || AvFILL(GvAV(PL_argvgv)) == -1))
4127 Perl_ck_warner_d(aTHX_ packWARN(WARN_INPLACE),
4128 "-i used with no filenames on the command line, "
4129 "reading from STDIN");
4133 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
4138 PERL_ARGS_ASSERT_INIT_POSTDUMP_SYMBOLS;
4140 PL_toptarget = newSV_type(SVt_PVFM);
4141 sv_setpvs(PL_toptarget, "");
4142 PL_bodytarget = newSV_type(SVt_PVFM);
4143 sv_setpvs(PL_bodytarget, "");
4144 PL_formtarget = PL_bodytarget;
4148 init_argv_symbols(argc,argv);
4150 if ((tmpgv = gv_fetchpvs("0", GV_ADD|GV_NOTQUAL, SVt_PV))) {
4151 sv_setpv(GvSV(tmpgv),PL_origfilename);
4153 if ((PL_envgv = gv_fetchpvs("ENV", GV_ADD|GV_NOTQUAL, SVt_PVHV))) {
4155 bool env_is_not_environ;
4156 GvMULTI_on(PL_envgv);
4157 hv = GvHVn(PL_envgv);
4158 hv_magic(hv, NULL, PERL_MAGIC_env);
4160 #ifdef USE_ENVIRON_ARRAY
4161 /* Note that if the supplied env parameter is actually a copy
4162 of the global environ then it may now point to free'd memory
4163 if the environment has been modified since. To avoid this
4164 problem we treat env==NULL as meaning 'use the default'
4168 env_is_not_environ = env != environ;
4169 if (env_is_not_environ
4170 # ifdef USE_ITHREADS
4171 && PL_curinterp == aTHX
4180 for (; *env; env++) {
4183 if (!(s = strchr(old_var,'=')) || s == old_var)
4186 #if defined(MSDOS) && !defined(DJGPP)
4188 (void)strupr(old_var);
4191 sv = newSVpv(s+1, 0);
4192 (void)hv_store(hv, old_var, s - old_var, sv, 0);
4193 if (env_is_not_environ)
4197 #endif /* USE_ENVIRON_ARRAY */
4198 #endif /* !PERL_MICRO */
4202 /* touch @F array to prevent spurious warnings 20020415 MJD */
4204 (void) get_av("main::F", GV_ADD | GV_ADDMULTI);
4209 S_init_perllib(pTHX)
4213 const char *perl5lib = NULL;
4216 #if defined(WIN32) && !defined(PERL_IS_MINIPERL)
4222 perl5lib = PerlEnv_getenv("PERL5LIB");
4224 * It isn't possible to delete an environment variable with
4225 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4226 * case we treat PERL5LIB as undefined if it has a zero-length value.
4228 #if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
4229 if (perl5lib && *perl5lib != '\0')
4233 incpush_use_sep(perl5lib, 0, INCPUSH_ADD_SUB_DIRS);
4235 s = PerlEnv_getenv("PERLLIB");
4237 incpush_use_sep(s, 0, 0);
4240 /* Treat PERL5?LIB as a possible search list logical name -- the
4241 * "natural" VMS idiom for a Unix path string. We allow each
4242 * element to be a set of |-separated directories for compatibility.
4246 if (my_trnlnm("PERL5LIB",buf,0))
4248 incpush_use_sep(buf, 0, INCPUSH_ADD_SUB_DIRS);
4249 } while (my_trnlnm("PERL5LIB",buf,++idx));
4251 while (my_trnlnm("PERLLIB",buf,idx++))
4252 incpush_use_sep(buf, 0, 0);
4257 #ifndef PERL_IS_MINIPERL
4258 /* miniperl gets just -I..., the split of $ENV{PERL5LIB}, and "." in @INC
4259 (and not the architecture specific directories from $ENV{PERL5LIB}) */
4261 /* Use the ~-expanded versions of APPLLIB (undocumented),
4262 SITEARCH, SITELIB, VENDORARCH, VENDORLIB, ARCHLIB and PRIVLIB
4265 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP),
4266 INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4270 /* sitearch is always relative to sitelib on Windows for
4271 * DLL-based path intuition to work correctly */
4272 # if !defined(WIN32)
4273 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITEARCH_EXP),
4274 INCPUSH_CAN_RELOCATE);
4280 /* this picks up sitearch as well */
4281 s = win32_get_sitelib(PERL_FS_VERSION, &len);
4283 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4285 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_EXP), INCPUSH_CAN_RELOCATE);
4289 #ifdef PERL_VENDORARCH_EXP
4290 /* vendorarch is always relative to vendorlib on Windows for
4291 * DLL-based path intuition to work correctly */
4292 # if !defined(WIN32)
4293 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORARCH_EXP),
4294 INCPUSH_CAN_RELOCATE);
4298 #ifdef PERL_VENDORLIB_EXP
4300 /* this picks up vendorarch as well */
4301 s = win32_get_vendorlib(PERL_FS_VERSION, &len);
4303 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4305 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_EXP),
4306 INCPUSH_CAN_RELOCATE);
4311 S_incpush_use_sep(aTHX_ STR_WITH_LEN(ARCHLIB_EXP), INCPUSH_CAN_RELOCATE);
4315 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
4319 s = win32_get_privlib(PERL_FS_VERSION, &len);
4321 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4324 S_incpush_use_sep(aTHX_ PRIVLIB_EXP, 0, INCPUSH_CAN_RELOCATE);
4326 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PRIVLIB_EXP), INCPUSH_CAN_RELOCATE);
4330 #ifdef PERL_OTHERLIBDIRS
4331 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS),
4332 INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_NOT_BASEDIR
4333 |INCPUSH_CAN_RELOCATE);
4339 * It isn't possible to delete an environment variable with
4340 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4341 * case we treat PERL5LIB as undefined if it has a zero-length value.
4343 #if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
4344 if (perl5lib && *perl5lib != '\0')
4348 incpush_use_sep(perl5lib, 0,
4349 INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
4351 /* Treat PERL5?LIB as a possible search list logical name -- the
4352 * "natural" VMS idiom for a Unix path string. We allow each
4353 * element to be a set of |-separated directories for compatibility.
4357 if (my_trnlnm("PERL5LIB",buf,0))
4359 incpush_use_sep(buf, 0,
4360 INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
4361 } while (my_trnlnm("PERL5LIB",buf,++idx));
4365 /* Use the ~-expanded versions of APPLLIB (undocumented),
4366 SITELIB and VENDORLIB for older versions
4369 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP), INCPUSH_ADD_OLD_VERS
4370 |INCPUSH_NOT_BASEDIR|INCPUSH_CAN_RELOCATE);
4373 #if defined(SITELIB_STEM) && defined(PERL_INC_VERSION_LIST)
4374 /* Search for version-specific dirs below here */
4375 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_STEM),
4376 INCPUSH_ADD_OLD_VERS|INCPUSH_CAN_RELOCATE);
4380 #if defined(PERL_VENDORLIB_STEM) && defined(PERL_INC_VERSION_LIST)
4381 /* Search for version-specific dirs below here */
4382 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_STEM),
4383 INCPUSH_ADD_OLD_VERS|INCPUSH_CAN_RELOCATE);
4386 #ifdef PERL_OTHERLIBDIRS
4387 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS),
4388 INCPUSH_ADD_OLD_VERS|INCPUSH_ADD_ARCHONLY_SUB_DIRS
4389 |INCPUSH_CAN_RELOCATE);
4391 #endif /* !PERL_IS_MINIPERL */
4394 S_incpush(aTHX_ STR_WITH_LEN("."), 0);
4397 #if defined(DOSISH) || defined(EPOC) || defined(__SYMBIAN32__)
4398 # define PERLLIB_SEP ';'
4401 # define PERLLIB_SEP '|'
4403 # define PERLLIB_SEP ':'
4406 #ifndef PERLLIB_MANGLE
4407 # define PERLLIB_MANGLE(s,n) (s)
4410 #ifndef PERL_IS_MINIPERL
4411 /* Push a directory onto @INC if it exists.
4412 Generate a new SV if we do this, to save needing to copy the SV we push
4415 S_incpush_if_exists(pTHX_ AV *const av, SV *dir, SV *const stem)
4420 PERL_ARGS_ASSERT_INCPUSH_IF_EXISTS;
4422 if (PerlLIO_stat(SvPVX_const(dir), &tmpstatbuf) >= 0 &&
4423 S_ISDIR(tmpstatbuf.st_mode)) {
4425 dir = newSVsv(stem);
4427 /* Truncate dir back to stem. */
4428 SvCUR_set(dir, SvCUR(stem));
4435 S_mayberelocate(pTHX_ const char *const dir, STRLEN len, U32 flags)
4437 const U8 canrelocate = (U8)flags & INCPUSH_CAN_RELOCATE;
4440 PERL_ARGS_ASSERT_MAYBERELOCATE;
4444 /* I am not convinced that this is valid when PERLLIB_MANGLE is
4445 defined to so something (in os2/os2.c), but the code has been
4446 this way, ignoring any possible changed of length, since
4447 760ac839baf413929cd31cc32ffd6dba6b781a81 (5.003_02) so I'll leave
4449 libdir = newSVpvn(PERLLIB_MANGLE(dir, len), len);
4451 libdir = newSVpv(PERLLIB_MANGLE(dir, 0), 0);
4458 if ((unix = tounixspec_ts(SvPV(libdir,len),NULL)) != NULL) {
4460 while (unix[len-1] == '/') len--; /* Cosmetic */
4461 sv_usepvn(libdir,unix,len);
4464 PerlIO_printf(Perl_error_log,
4465 "Failed to unixify @INC element \"%s\"\n",
4466 SvPV_nolen_const(libdir));
4470 /* Do the if() outside the #ifdef to avoid warnings about an unused
4473 #ifdef PERL_RELOCATABLE_INC
4475 * Relocatable include entries are marked with a leading .../
4478 * 0: Remove that leading ".../"
4479 * 1: Remove trailing executable name (anything after the last '/')
4480 * from the perl path to give a perl prefix
4482 * While the @INC element starts "../" and the prefix ends with a real
4483 * directory (ie not . or ..) chop that real directory off the prefix
4484 * and the leading "../" from the @INC element. ie a logical "../"
4486 * Finally concatenate the prefix and the remainder of the @INC element
4487 * The intent is that /usr/local/bin/perl and .../../lib/perl5
4488 * generates /usr/local/lib/perl5
4490 const char *libpath = SvPVX(libdir);
4491 STRLEN libpath_len = SvCUR(libdir);
4492 if (libpath_len >= 4 && memEQ (libpath, ".../", 4)) {
4494 SV * const caret_X = get_sv("\030", 0);
4495 /* Going to use the SV just as a scratch buffer holding a C
4501 /* $^X is *the* source of taint if tainting is on, hence
4502 SvPOK() won't be true. */
4504 assert(SvPOKp(caret_X));
4505 prefix_sv = newSVpvn_flags(SvPVX(caret_X), SvCUR(caret_X),
4507 /* Firstly take off the leading .../
4508 If all else fail we'll do the paths relative to the current
4510 sv_chop(libdir, libpath + 4);
4511 /* Don't use SvPV as we're intentionally bypassing taining,
4512 mortal copies that the mg_get of tainting creates, and
4513 corruption that seems to come via the save stack.
4514 I guess that the save stack isn't correctly set up yet. */
4515 libpath = SvPVX(libdir);
4516 libpath_len = SvCUR(libdir);
4518 /* This would work more efficiently with memrchr, but as it's
4519 only a GNU extension we'd need to probe for it and
4520 implement our own. Not hard, but maybe not worth it? */
4522 prefix = SvPVX(prefix_sv);
4523 lastslash = strrchr(prefix, '/');
4525 /* First time in with the *lastslash = '\0' we just wipe off
4526 the trailing /perl from (say) /usr/foo/bin/perl
4530 while ((*lastslash = '\0'), /* Do that, come what may. */
4531 (libpath_len >= 3 && memEQ(libpath, "../", 3)
4532 && (lastslash = strrchr(prefix, '/')))) {
4533 if (lastslash[1] == '\0'
4534 || (lastslash[1] == '.'
4535 && (lastslash[2] == '/' /* ends "/." */
4536 || (lastslash[2] == '/'
4537 && lastslash[3] == '/' /* or "/.." */
4539 /* Prefix ends "/" or "/." or "/..", any of which
4540 are fishy, so don't do any more logical cleanup.
4544 /* Remove leading "../" from path */
4547 /* Next iteration round the loop removes the last
4548 directory name from prefix by writing a '\0' in
4549 the while clause. */
4551 /* prefix has been terminated with a '\0' to the correct
4552 length. libpath points somewhere into the libdir SV.
4553 We need to join the 2 with '/' and drop the result into
4555 tempsv = Perl_newSVpvf(aTHX_ "%s/%s", prefix, libpath);
4556 SvREFCNT_dec(libdir);
4557 /* And this is the new libdir. */
4560 (PerlProc_getuid() != PerlProc_geteuid() ||
4561 PerlProc_getgid() != PerlProc_getegid())) {
4562 /* Need to taint relocated paths if running set ID */
4563 SvTAINTED_on(libdir);
4566 SvREFCNT_dec(prefix_sv);
4574 S_incpush(pTHX_ const char *const dir, STRLEN len, U32 flags)
4577 #ifndef PERL_IS_MINIPERL
4578 const U8 using_sub_dirs
4579 = (U8)flags & (INCPUSH_ADD_VERSIONED_SUB_DIRS
4580 |INCPUSH_ADD_ARCHONLY_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
4581 const U8 add_versioned_sub_dirs
4582 = (U8)flags & INCPUSH_ADD_VERSIONED_SUB_DIRS;
4583 const U8 add_archonly_sub_dirs
4584 = (U8)flags & INCPUSH_ADD_ARCHONLY_SUB_DIRS;
4585 #ifdef PERL_INC_VERSION_LIST
4586 const U8 addoldvers = (U8)flags & INCPUSH_ADD_OLD_VERS;
4589 const U8 unshift = (U8)flags & INCPUSH_UNSHIFT;
4590 const U8 push_basedir = (flags & INCPUSH_NOT_BASEDIR) ? 0 : 1;
4591 AV *const inc = GvAVn(PL_incgv);
4593 PERL_ARGS_ASSERT_INCPUSH;
4596 /* Could remove this vestigial extra block, if we don't mind a lot of
4597 re-indenting diff noise. */
4599 SV *const libdir = mayberelocate(dir, len, flags);
4600 /* Change 20189146be79a0596543441fa369c6bf7f85103f, to fix RT#6665,
4601 arranged to unshift #! line -I onto the front of @INC. However,
4602 -I can add version and architecture specific libraries, and they
4603 need to go first. The old code assumed that it was always
4604 pushing. Hence to make it work, need to push the architecture
4605 (etc) libraries onto a temporary array, then "unshift" that onto
4606 the front of @INC. */
4607 #ifndef PERL_IS_MINIPERL
4608 AV *const av = (using_sub_dirs) ? (unshift ? newAV() : inc) : NULL;
4611 * BEFORE pushing libdir onto @INC we may first push version- and
4612 * archname-specific sub-directories.
4614 if (using_sub_dirs) {
4615 SV *subdir = newSVsv(libdir);
4616 #ifdef PERL_INC_VERSION_LIST
4617 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
4618 const char * const incverlist[] = { PERL_INC_VERSION_LIST };
4619 const char * const *incver;
4622 if (add_versioned_sub_dirs) {
4623 /* .../version/archname if -d .../version/archname */
4624 sv_catpvs(subdir, "/" PERL_FS_VERSION "/" ARCHNAME);
4625 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4627 /* .../version if -d .../version */
4628 sv_catpvs(subdir, "/" PERL_FS_VERSION);
4629 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4632 #ifdef PERL_INC_VERSION_LIST
4634 for (incver = incverlist; *incver; incver++) {
4635 /* .../xxx if -d .../xxx */
4636 Perl_sv_catpvf(aTHX_ subdir, "/%s", *incver);
4637 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4642 if (add_archonly_sub_dirs) {
4643 /* .../archname if -d .../archname */
4644 sv_catpvs(subdir, "/" ARCHNAME);
4645 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4649 assert (SvREFCNT(subdir) == 1);
4650 SvREFCNT_dec(subdir);
4652 #endif /* !PERL_IS_MINIPERL */
4653 /* finally add this lib directory at the end of @INC */
4655 #ifdef PERL_IS_MINIPERL
4656 const U32 extra = 0;
4658 U32 extra = av_len(av) + 1;
4660 av_unshift(inc, extra + push_basedir);
4662 av_store(inc, extra, libdir);
4663 #ifndef PERL_IS_MINIPERL
4665 /* av owns a reference, av_store() expects to be donated a
4666 reference, and av expects to be sane when it's cleared.
4667 If I wanted to be naughty and wrong, I could peek inside the
4668 implementation of av_clear(), realise that it uses
4669 SvREFCNT_dec() too, so av's array could be a run of NULLs,
4670 and so directly steal from it (with a memcpy() to inc, and
4671 then memset() to NULL them out. But people copy code from the
4672 core expecting it to be best practise, so let's use the API.
4673 Although studious readers will note that I'm not checking any
4675 av_store(inc, extra, SvREFCNT_inc(*av_fetch(av, extra, FALSE)));
4680 else if (push_basedir) {
4681 av_push(inc, libdir);
4684 if (!push_basedir) {
4685 assert (SvREFCNT(libdir) == 1);
4686 SvREFCNT_dec(libdir);
4692 S_incpush_use_sep(pTHX_ const char *p, STRLEN len, U32 flags)
4696 /* This logic has been broken out from S_incpush(). It may be possible to
4699 PERL_ARGS_ASSERT_INCPUSH_USE_SEP;
4701 /* perl compiled with -DPERL_RELOCATABLE_INCPUSH will ignore the len
4702 * argument to incpush_use_sep. This allows creation of relocatable
4703 * Perl distributions that patch the binary at install time. Those
4704 * distributions will have to provide their own relocation tools; this
4705 * is not a feature otherwise supported by core Perl.
4707 #ifndef PERL_RELOCATABLE_INCPUSH
4714 /* Break at all separators */
4715 while ((s = (const char*)memchr(p, PERLLIB_SEP, end - p))) {
4717 /* skip any consecutive separators */
4719 /* Uncomment the next line for PATH semantics */
4720 /* But you'll need to write tests */
4721 /* av_push(GvAVn(PL_incgv), newSVpvs(".")); */
4723 incpush(p, (STRLEN)(s - p), flags);
4728 incpush(p, (STRLEN)(end - p), flags);
4733 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
4737 volatile const line_t oldline = PL_curcop ? CopLINE(PL_curcop) : 0;
4743 PERL_ARGS_ASSERT_CALL_LIST;
4745 while (av_len(paramList) >= 0) {
4746 cv = MUTABLE_CV(av_shift(paramList));
4748 if (paramList == PL_beginav) {
4749 /* save PL_beginav for compiler */
4750 Perl_av_create_and_push(aTHX_ &PL_beginav_save, MUTABLE_SV(cv));
4752 else if (paramList == PL_checkav) {
4753 /* save PL_checkav for compiler */
4754 Perl_av_create_and_push(aTHX_ &PL_checkav_save, MUTABLE_SV(cv));
4756 else if (paramList == PL_unitcheckav) {
4757 /* save PL_unitcheckav for compiler */
4758 Perl_av_create_and_push(aTHX_ &PL_unitcheckav_save, MUTABLE_SV(cv));
4769 PL_madskills |= 16384;
4774 PL_madskills &= ~16384;
4777 (void)SvPV_const(atsv, len);
4779 PL_curcop = &PL_compiling;
4780 CopLINE_set(PL_curcop, oldline);
4781 if (paramList == PL_beginav)
4782 sv_catpvs(atsv, "BEGIN failed--compilation aborted");
4784 Perl_sv_catpvf(aTHX_ atsv,
4785 "%s failed--call queue aborted",
4786 paramList == PL_checkav ? "CHECK"
4787 : paramList == PL_initav ? "INIT"
4788 : paramList == PL_unitcheckav ? "UNITCHECK"
4790 while (PL_scopestack_ix > oldscope)
4793 Perl_croak(aTHX_ "%"SVf"", SVfARG(atsv));
4800 /* my_exit() was called */
4801 while (PL_scopestack_ix > oldscope)
4804 SET_CURSTASH(PL_defstash);
4805 PL_curcop = &PL_compiling;
4806 CopLINE_set(PL_curcop, oldline);
4809 assert(0); /* NOTREACHED */
4812 PL_curcop = &PL_compiling;
4813 CopLINE_set(PL_curcop, oldline);
4816 PerlIO_printf(Perl_error_log, "panic: restartop in call_list\n");
4825 Perl_my_exit(pTHX_ U32 status)
4836 STATUS_EXIT_SET(status);
4843 Perl_my_failure_exit(pTHX)
4847 /* We have been called to fall on our sword. The desired exit code
4848 * should be already set in STATUS_UNIX, but could be shifted over
4849 * by 8 bits. STATUS_UNIX_EXIT_SET will handle the cases where a
4852 * If an error code has not been set, then force the issue.
4854 if (MY_POSIX_EXIT) {
4856 /* According to the die_exit.t tests, if errno is non-zero */
4857 /* It should be used for the error status. */
4859 if (errno == EVMSERR) {
4860 STATUS_NATIVE = vaxc$errno;
4863 /* According to die_exit.t tests, if the child_exit code is */
4864 /* also zero, then we need to exit with a code of 255 */
4865 if ((errno != 0) && (errno < 256))
4866 STATUS_UNIX_EXIT_SET(errno);
4867 else if (STATUS_UNIX < 255) {
4868 STATUS_UNIX_EXIT_SET(255);
4873 /* The exit code could have been set by $? or vmsish which
4874 * means that it may not have fatal set. So convert
4875 * success/warning codes to fatal with out changing
4876 * the POSIX status code. The severity makes VMS native
4877 * status handling work, while UNIX mode programs use the
4878 * the POSIX exit codes.
4880 if ((STATUS_NATIVE & (STS$K_SEVERE|STS$K_ERROR)) == 0) {
4881 STATUS_NATIVE &= STS$M_COND_ID;
4882 STATUS_NATIVE |= STS$K_ERROR | STS$M_INHIB_MSG;
4886 /* Traditionally Perl on VMS always expects a Fatal Error. */
4887 if (vaxc$errno & 1) {
4889 /* So force success status to failure */
4890 if (STATUS_NATIVE & 1)
4895 STATUS_UNIX = EINTR; /* In case something cares */
4900 STATUS_NATIVE = vaxc$errno; /* Should already be this */
4902 /* Encode the severity code */
4903 severity = STATUS_NATIVE & STS$M_SEVERITY;
4904 STATUS_UNIX = (severity ? severity : 1) << 8;
4906 /* Perl expects this to be a fatal error */
4907 if (severity != STS$K_SEVERE)
4916 STATUS_UNIX_SET(errno);
4918 exitstatus = STATUS_UNIX >> 8;
4919 if (exitstatus & 255)
4920 STATUS_UNIX_SET(exitstatus);
4922 STATUS_UNIX_SET(255);
4929 S_my_exit_jump(pTHX)
4934 SvREFCNT_dec(PL_e_script);
4938 POPSTACK_TO(PL_mainstack);
4946 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen)
4949 const char * const p = SvPVX_const(PL_e_script);
4950 const char *nl = strchr(p, '\n');
4952 PERL_UNUSED_ARG(idx);
4953 PERL_UNUSED_ARG(maxlen);
4955 nl = (nl) ? nl+1 : SvEND(PL_e_script);
4957 filter_del(read_e_script);
4960 sv_catpvn(buf_sv, p, nl-p);
4961 sv_chop(PL_e_script, nl);
4967 * c-indentation-style: bsd
4969 * indent-tabs-mode: nil
4972 * ex: set ts=8 sts=4 sw=4 et: