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);
293 #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
294 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
295 * This MUST be done before any hash stores or fetches take place.
296 * If you set PL_hash_seed (and presumably also PL_hash_seed_set)
297 * yourself, it is your responsibility to provide a good random seed!
298 * You can also define PERL_HASH_SEED in compile time, see hv.h.
300 * XXX: fix this comment */
301 if (PL_hash_seed_set == FALSE) {
302 Perl_get_hash_seed(aTHX_ PL_hash_seed);
303 PL_hash_seed_set= TRUE;
305 #endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
307 /* Note that strtab is a rather special HV. Assumptions are made
308 about not iterating on it, and not adding tie magic to it.
309 It is properly deallocated in perl_destruct() */
312 HvSHAREKEYS_off(PL_strtab); /* mandatory */
313 hv_ksplit(PL_strtab, 512);
315 #if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
316 _dyld_lookup_and_bind
317 ("__environ", (unsigned long *) &environ_pointer, NULL);
321 # ifdef USE_ENVIRON_ARRAY
322 PL_origenviron = environ;
326 /* Use sysconf(_SC_CLK_TCK) if available, if not
327 * available or if the sysconf() fails, use the HZ.
328 * BeOS has those, but returns the wrong value.
329 * The HZ if not originally defined has been by now
330 * been defined as CLK_TCK, if available. */
331 #if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK) && !defined(__BEOS__)
332 PL_clocktick = sysconf(_SC_CLK_TCK);
333 if (PL_clocktick <= 0)
337 PL_stashcache = newHV();
339 PL_patchlevel = newSVpvs("v" PERL_VERSION_STRING);
340 PL_apiversion = newSVpvs("v" PERL_API_VERSION_STRING);
343 if (!PL_mmap_page_size) {
344 #if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
346 SETERRNO(0, SS_NORMAL);
348 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
350 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
352 if ((long) PL_mmap_page_size < 0) {
354 SV * const error = ERRSV;
355 SvUPGRADE(error, SVt_PV);
356 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
359 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
363 # ifdef HAS_GETPAGESIZE
364 PL_mmap_page_size = getpagesize();
366 # if defined(I_SYS_PARAM) && defined(PAGESIZE)
367 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
371 if (PL_mmap_page_size <= 0)
372 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
373 (IV) PL_mmap_page_size);
375 #endif /* HAS_MMAP */
377 #if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
378 PL_timesbase.tms_utime = 0;
379 PL_timesbase.tms_stime = 0;
380 PL_timesbase.tms_cutime = 0;
381 PL_timesbase.tms_cstime = 0;
384 PL_osname = Perl_savepvn(aTHX_ STR_WITH_LEN(OSNAME));
386 PL_registered_mros = newHV();
387 /* Start with 1 bucket, for DFS. It's unlikely we'll need more. */
388 HvMAX(PL_registered_mros) = 0;
394 =for apidoc nothreadhook
396 Stub that provides thread hook for perl_destruct when there are
403 Perl_nothreadhook(pTHX)
409 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
411 Perl_dump_sv_child(pTHX_ SV *sv)
414 const int sock = PL_dumper_fd;
415 const int debug_fd = PerlIO_fileno(Perl_debug_log);
416 union control_un control;
419 struct cmsghdr *cmptr;
421 unsigned char buffer[256];
423 PERL_ARGS_ASSERT_DUMP_SV_CHILD;
425 if(sock == -1 || debug_fd == -1)
428 PerlIO_flush(Perl_debug_log);
430 /* All these shenanigans are to pass a file descriptor over to our child for
431 it to dump out to. We can't let it hold open the file descriptor when it
432 forks, as the file descriptor it will dump to can turn out to be one end
433 of pipe that some other process will wait on for EOF. (So as it would
434 be open, the wait would be forever.) */
436 msg.msg_control = control.control;
437 msg.msg_controllen = sizeof(control.control);
438 /* We're a connected socket so we don't need a destination */
444 cmptr = CMSG_FIRSTHDR(&msg);
445 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
446 cmptr->cmsg_level = SOL_SOCKET;
447 cmptr->cmsg_type = SCM_RIGHTS;
448 *((int *)CMSG_DATA(cmptr)) = 1;
450 vec[0].iov_base = (void*)&sv;
451 vec[0].iov_len = sizeof(sv);
452 got = sendmsg(sock, &msg, 0);
455 perror("Debug leaking scalars parent sendmsg failed");
458 if(got < sizeof(sv)) {
459 perror("Debug leaking scalars parent short sendmsg");
463 /* Return protocol is
465 unsigned char: length of location string (0 for empty)
466 unsigned char*: string (not terminated)
468 vec[0].iov_base = (void*)&returned_errno;
469 vec[0].iov_len = sizeof(returned_errno);
470 vec[1].iov_base = buffer;
473 got = readv(sock, vec, 2);
476 perror("Debug leaking scalars parent read failed");
477 PerlIO_flush(PerlIO_stderr());
480 if(got < sizeof(returned_errno) + 1) {
481 perror("Debug leaking scalars parent short read");
482 PerlIO_flush(PerlIO_stderr());
487 got = read(sock, buffer + 1, *buffer);
489 perror("Debug leaking scalars parent read 2 failed");
490 PerlIO_flush(PerlIO_stderr());
495 perror("Debug leaking scalars parent short read 2");
496 PerlIO_flush(PerlIO_stderr());
501 if (returned_errno || *buffer) {
502 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
503 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
504 returned_errno, strerror(returned_errno));
510 =for apidoc perl_destruct
512 Shuts down a Perl interpreter. See L<perlembed>.
521 VOL signed char destruct_level; /* see possible values in intrpvar.h */
523 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
527 PERL_ARGS_ASSERT_PERL_DESTRUCT;
529 PERL_UNUSED_ARG(my_perl);
532 assert(PL_scopestack_ix == 1);
534 /* wait for all pseudo-forked children to finish */
535 PERL_WAIT_FOR_CHILDREN;
537 destruct_level = PL_perl_destruct_level;
538 #if defined(DEBUGGING) || defined(PERL_TRACK_MEMPOOL)
540 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
542 const int i = atoi(s);
544 if (destruct_level < i) destruct_level = i;
546 #ifdef PERL_TRACK_MEMPOOL
547 /* RT #114496, for perl_free */
548 PL_perl_destruct_level = i;
554 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
560 if (PL_endav && !PL_minus_c) {
561 PERL_SET_PHASE(PERL_PHASE_END);
562 call_list(PL_scopestack_ix, PL_endav);
568 assert(PL_scopestack_ix == 0);
570 /* Need to flush since END blocks can produce output */
573 if (PL_threadhook(aTHX)) {
574 /* Threads hook has vetoed further cleanup */
575 PL_veto_cleanup = TRUE;
579 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
580 if (destruct_level != 0) {
581 /* Fork here to create a child. Our child's job is to preserve the
582 state of scalars prior to destruction, so that we can instruct it
583 to dump any scalars that we later find have leaked.
584 There's no subtlety in this code - it assumes POSIX, and it doesn't
588 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
589 perror("Debug leaking scalars socketpair failed");
595 perror("Debug leaking scalars fork failed");
599 /* We are the child */
600 const int sock = fd[1];
601 const int debug_fd = PerlIO_fileno(Perl_debug_log);
604 /* Our success message is an integer 0, and a char 0 */
605 static const char success[sizeof(int) + 1] = {0};
609 /* We need to close all other file descriptors otherwise we end up
610 with interesting hangs, where the parent closes its end of a
611 pipe, and sits waiting for (another) child to terminate. Only
612 that child never terminates, because it never gets EOF, because
613 we also have the far end of the pipe open. We even need to
614 close the debugging fd, because sometimes it happens to be one
615 end of a pipe, and a process is waiting on the other end for
616 EOF. Normally it would be closed at some point earlier in
617 destruction, but if we happen to cause the pipe to remain open,
618 EOF never occurs, and we get an infinite hang. Hence all the
619 games to pass in a file descriptor if it's actually needed. */
621 f = sysconf(_SC_OPEN_MAX);
623 where = "sysconf failed";
634 union control_un control;
637 struct cmsghdr *cmptr;
641 msg.msg_control = control.control;
642 msg.msg_controllen = sizeof(control.control);
643 /* We're a connected socket so we don't need a source */
647 msg.msg_iovlen = sizeof(vec)/sizeof(vec[0]);
649 vec[0].iov_base = (void*)⌖
650 vec[0].iov_len = sizeof(target);
652 got = recvmsg(sock, &msg, 0);
657 where = "recv failed";
660 if(got < sizeof(target)) {
661 where = "short recv";
665 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
669 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
670 where = "wrong cmsg_len";
673 if(cmptr->cmsg_level != SOL_SOCKET) {
674 where = "wrong cmsg_level";
677 if(cmptr->cmsg_type != SCM_RIGHTS) {
678 where = "wrong cmsg_type";
682 got_fd = *(int*)CMSG_DATA(cmptr);
683 /* For our last little bit of trickery, put the file descriptor
684 back into Perl_debug_log, as if we never actually closed it
686 if(got_fd != debug_fd) {
687 if (dup2(got_fd, debug_fd) == -1) {
694 PerlIO_flush(Perl_debug_log);
696 got = write(sock, &success, sizeof(success));
699 where = "write failed";
702 if(got < sizeof(success)) {
703 where = "short write";
710 int send_errno = errno;
711 unsigned char length = (unsigned char) strlen(where);
712 struct iovec failure[3] = {
713 {(void*)&send_errno, sizeof(send_errno)},
715 {(void*)where, length}
717 int got = writev(sock, failure, 3);
718 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
719 in the parent if we try to read from the socketpair after the
720 child has exited, even if there was data to read.
721 So sleep a bit to give the parent a fighting chance of
724 _exit((got == -1) ? errno : 0);
728 PL_dumper_fd = fd[0];
733 /* We must account for everything. */
735 /* Destroy the main CV and syntax tree */
736 /* Set PL_curcop now, because destroying ops can cause new SVs
737 to be generated in Perl_pad_swipe, and when running with
738 -DDEBUG_LEAKING_SCALARS they expect PL_curcop to point to a valid
739 op from which the filename structure member is copied. */
740 PL_curcop = &PL_compiling;
742 /* ensure comppad/curpad to refer to main's pad */
743 if (CvPADLIST(PL_main_cv)) {
744 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
746 op_free(PL_main_root);
749 PL_main_start = NULL;
750 /* note that PL_main_cv isn't usually actually freed at this point,
751 * due to the CvOUTSIDE refs from subs compiled within it. It will
752 * get freed once all the subs are freed in sv_clean_all(), for
753 * destruct_level > 0 */
754 SvREFCNT_dec(PL_main_cv);
756 PERL_SET_PHASE(PERL_PHASE_DESTRUCT);
758 /* Tell PerlIO we are about to tear things apart in case
759 we have layers which are using resources that should
763 PerlIO_destruct(aTHX);
765 if (PL_sv_objcount) {
767 * Try to destruct global references. We do this first so that the
768 * destructors and destructees still exist. Some sv's might remain.
769 * Non-referenced objects are on their own.
775 /* unhook hooks which will soon be, or use, destroyed data */
776 SvREFCNT_dec(PL_warnhook);
778 SvREFCNT_dec(PL_diehook);
781 /* call exit list functions */
782 while (PL_exitlistlen-- > 0)
783 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
785 Safefree(PL_exitlist);
790 SvREFCNT_dec(PL_registered_mros);
792 /* jettison our possibly duplicated environment */
793 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
794 * so we certainly shouldn't free it here
797 #if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
798 if (environ != PL_origenviron && !PL_use_safe_putenv
800 /* only main thread can free environ[0] contents */
801 && PL_curinterp == aTHX
807 for (i = 0; environ[i]; i++)
808 safesysfree(environ[i]);
810 /* Must use safesysfree() when working with environ. */
811 safesysfree(environ);
813 environ = PL_origenviron;
816 #endif /* !PERL_MICRO */
818 if (destruct_level == 0) {
820 DEBUG_P(debprofdump());
822 #if defined(PERLIO_LAYERS)
823 /* No more IO - including error messages ! */
824 PerlIO_cleanup(aTHX);
827 CopFILE_free(&PL_compiling);
829 /* The exit() function will do everything that needs doing. */
834 /* the syntax tree is shared between clones
835 * so op_free(PL_main_root) only ReREFCNT_dec's
836 * REGEXPs in the parent interpreter
837 * we need to manually ReREFCNT_dec for the clones
840 I32 i = AvFILLp(PL_regex_padav);
841 SV **ary = AvARRAY(PL_regex_padav);
844 SvREFCNT_dec(ary[i]);
845 ary[i] = &PL_sv_undef;
848 Safefree(PL_stashpad);
852 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
853 PL_stashcache = NULL;
855 /* loosen bonds of global variables */
857 /* XXX can PL_parser still be non-null here? */
858 if(PL_parser && PL_parser->rsfp) {
859 (void)PerlIO_close(PL_parser->rsfp);
860 PL_parser->rsfp = NULL;
864 Safefree(PL_splitstr);
874 PL_doswitches = FALSE;
875 PL_dowarn = G_WARN_OFF;
876 PL_sawampersand = 0; /* must save all match strings */
879 Safefree(PL_inplace);
881 SvREFCNT_dec(PL_patchlevel);
882 SvREFCNT_dec(PL_apiversion);
885 SvREFCNT_dec(PL_e_script);
891 /* magical thingies */
893 SvREFCNT_dec(PL_ofsgv); /* *, */
896 SvREFCNT_dec(PL_ors_sv); /* $\ */
899 SvREFCNT_dec(PL_rs); /* $/ */
902 Safefree(PL_osname); /* $^O */
905 SvREFCNT_dec(PL_statname);
909 /* defgv, aka *_ should be taken care of elsewhere */
912 Safefree(PL_efloatbuf);
916 /* startup and shutdown function lists */
917 SvREFCNT_dec(PL_beginav);
918 SvREFCNT_dec(PL_beginav_save);
919 SvREFCNT_dec(PL_endav);
920 SvREFCNT_dec(PL_checkav);
921 SvREFCNT_dec(PL_checkav_save);
922 SvREFCNT_dec(PL_unitcheckav);
923 SvREFCNT_dec(PL_unitcheckav_save);
924 SvREFCNT_dec(PL_initav);
926 PL_beginav_save = NULL;
929 PL_checkav_save = NULL;
930 PL_unitcheckav = NULL;
931 PL_unitcheckav_save = NULL;
934 /* shortcuts just get cleared */
943 PL_last_in_gv = NULL;
955 SvREFCNT_dec(PL_argvout_stack);
956 PL_argvout_stack = NULL;
958 SvREFCNT_dec(PL_modglobal);
960 SvREFCNT_dec(PL_preambleav);
961 PL_preambleav = NULL;
962 SvREFCNT_dec(PL_subname);
964 #ifdef PERL_USES_PL_PIDSTATUS
965 SvREFCNT_dec(PL_pidstatus);
968 SvREFCNT_dec(PL_toptarget);
970 SvREFCNT_dec(PL_bodytarget);
971 PL_bodytarget = NULL;
972 PL_formtarget = NULL;
974 /* free locale stuff */
975 #ifdef USE_LOCALE_COLLATE
976 Safefree(PL_collation_name);
977 PL_collation_name = NULL;
980 #ifdef USE_LOCALE_NUMERIC
981 Safefree(PL_numeric_name);
982 PL_numeric_name = NULL;
983 SvREFCNT_dec(PL_numeric_radix_sv);
984 PL_numeric_radix_sv = NULL;
987 /* clear utf8 character classes */
988 SvREFCNT_dec(PL_utf8_alnum);
989 SvREFCNT_dec(PL_utf8_alpha);
990 SvREFCNT_dec(PL_utf8_blank);
991 SvREFCNT_dec(PL_utf8_space);
992 SvREFCNT_dec(PL_utf8_graph);
993 SvREFCNT_dec(PL_utf8_digit);
994 SvREFCNT_dec(PL_utf8_upper);
995 SvREFCNT_dec(PL_utf8_lower);
996 SvREFCNT_dec(PL_utf8_print);
997 SvREFCNT_dec(PL_utf8_punct);
998 SvREFCNT_dec(PL_utf8_xdigit);
999 SvREFCNT_dec(PL_utf8_mark);
1000 SvREFCNT_dec(PL_utf8_toupper);
1001 SvREFCNT_dec(PL_utf8_totitle);
1002 SvREFCNT_dec(PL_utf8_tolower);
1003 SvREFCNT_dec(PL_utf8_tofold);
1004 SvREFCNT_dec(PL_utf8_idstart);
1005 SvREFCNT_dec(PL_utf8_idcont);
1006 SvREFCNT_dec(PL_utf8_foldclosures);
1007 PL_utf8_alnum = NULL;
1008 PL_utf8_alpha = NULL;
1009 PL_utf8_blank = NULL;
1010 PL_utf8_space = NULL;
1011 PL_utf8_graph = NULL;
1012 PL_utf8_digit = NULL;
1013 PL_utf8_upper = NULL;
1014 PL_utf8_lower = NULL;
1015 PL_utf8_print = NULL;
1016 PL_utf8_punct = NULL;
1017 PL_utf8_xdigit = NULL;
1018 PL_utf8_mark = NULL;
1019 PL_utf8_toupper = NULL;
1020 PL_utf8_totitle = NULL;
1021 PL_utf8_tolower = NULL;
1022 PL_utf8_tofold = NULL;
1023 PL_utf8_idstart = NULL;
1024 PL_utf8_idcont = NULL;
1025 PL_utf8_foldclosures = NULL;
1027 if (!specialWARN(PL_compiling.cop_warnings))
1028 PerlMemShared_free(PL_compiling.cop_warnings);
1029 PL_compiling.cop_warnings = NULL;
1030 cophh_free(CopHINTHASH_get(&PL_compiling));
1031 CopHINTHASH_set(&PL_compiling, cophh_new_empty());
1032 CopFILE_free(&PL_compiling);
1034 /* Prepare to destruct main symbol table. */
1037 /* break ref loop *:: <=> %:: */
1038 (void)hv_delete(hv, "main::", 6, G_DISCARD);
1041 SvREFCNT_dec(PL_curstname);
1042 PL_curstname = NULL;
1044 /* clear queued errors */
1045 SvREFCNT_dec(PL_errors);
1048 SvREFCNT_dec(PL_isarev);
1051 if (destruct_level >= 2) {
1052 if (PL_scopestack_ix != 0)
1053 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1054 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1055 (long)PL_scopestack_ix);
1056 if (PL_savestack_ix != 0)
1057 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1058 "Unbalanced saves: %ld more saves than restores\n",
1059 (long)PL_savestack_ix);
1060 if (PL_tmps_floor != -1)
1061 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1062 (long)PL_tmps_floor + 1);
1063 if (cxstack_ix != -1)
1064 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1065 (long)cxstack_ix + 1);
1069 SvREFCNT_dec(PL_regex_padav);
1070 PL_regex_padav = NULL;
1071 PL_regex_pad = NULL;
1074 #ifdef PERL_IMPLICIT_CONTEXT
1075 /* the entries in this list are allocated via SV PVX's, so get freed
1076 * in sv_clean_all */
1077 Safefree(PL_my_cxt_list);
1080 /* Now absolutely destruct everything, somehow or other, loops or no. */
1082 /* the 2 is for PL_fdpid and PL_strtab */
1083 while (sv_clean_all() > 2)
1086 AvREAL_off(PL_fdpid); /* no surviving entries */
1087 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
1090 #ifdef HAVE_INTERP_INTERN
1094 /* Destruct the global string table. */
1096 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1097 * so that sv_free() won't fail on them.
1098 * Now that the global string table is using a single hunk of memory
1099 * for both HE and HEK, we either need to explicitly unshare it the
1100 * correct way, or actually free things here.
1103 const I32 max = HvMAX(PL_strtab);
1104 HE * const * const array = HvARRAY(PL_strtab);
1105 HE *hent = array[0];
1108 if (hent && ckWARN_d(WARN_INTERNAL)) {
1109 HE * const next = HeNEXT(hent);
1110 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
1111 "Unbalanced string table refcount: (%ld) for \"%s\"",
1112 (long)hent->he_valu.hent_refcount, HeKEY(hent));
1119 hent = array[riter];
1124 HvARRAY(PL_strtab) = 0;
1125 HvTOTALKEYS(PL_strtab) = 0;
1127 SvREFCNT_dec(PL_strtab);
1130 /* free the pointer tables used for cloning */
1131 ptr_table_free(PL_ptr_table);
1132 PL_ptr_table = (PTR_TBL_t*)NULL;
1135 /* free special SVs */
1137 SvREFCNT(&PL_sv_yes) = 0;
1138 sv_clear(&PL_sv_yes);
1139 SvANY(&PL_sv_yes) = NULL;
1140 SvFLAGS(&PL_sv_yes) = 0;
1142 SvREFCNT(&PL_sv_no) = 0;
1143 sv_clear(&PL_sv_no);
1144 SvANY(&PL_sv_no) = NULL;
1145 SvFLAGS(&PL_sv_no) = 0;
1149 for (i=0; i<=2; i++) {
1150 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1151 sv_clear(PERL_DEBUG_PAD(i));
1152 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1153 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1157 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
1158 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
1160 #ifdef DEBUG_LEAKING_SCALARS
1161 if (PL_sv_count != 0) {
1166 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
1167 svend = &sva[SvREFCNT(sva)];
1168 for (sv = sva + 1; sv < svend; ++sv) {
1169 if (SvTYPE(sv) != (svtype)SVTYPEMASK) {
1170 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
1172 " refcnt=%"UVuf pTHX__FORMAT "\n"
1173 "\tallocated at %s:%d %s %s (parent 0x%"UVxf");"
1175 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1177 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1179 sv->sv_debug_inpad ? "for" : "by",
1180 sv->sv_debug_optype ?
1181 PL_op_name[sv->sv_debug_optype]: "(none)",
1182 PTR2UV(sv->sv_debug_parent),
1185 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1186 Perl_dump_sv_child(aTHX_ sv);
1192 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1196 /* Wait for up to 4 seconds for child to terminate.
1197 This seems to be the least effort way of timing out on reaping
1199 struct timeval waitfor = {4, 0};
1200 int sock = PL_dumper_fd;
1204 FD_SET(sock, &rset);
1205 select(sock + 1, &rset, NULL, NULL, &waitfor);
1206 waitpid(child, &status, WNOHANG);
1211 #ifdef DEBUG_LEAKING_SCALARS_ABORT
1217 #if defined(PERLIO_LAYERS)
1218 /* No more IO - including error messages ! */
1219 PerlIO_cleanup(aTHX);
1222 /* sv_undef needs to stay immortal until after PerlIO_cleanup
1223 as currently layers use it rather than NULL as a marker
1224 for no arg - and will try and SvREFCNT_dec it.
1226 SvREFCNT(&PL_sv_undef) = 0;
1227 SvREADONLY_off(&PL_sv_undef);
1229 Safefree(PL_origfilename);
1230 PL_origfilename = NULL;
1231 Safefree(PL_reg_curpm);
1232 Safefree(PL_reg_poscache);
1233 free_tied_hv_pool();
1234 Safefree(PL_op_mask);
1235 Safefree(PL_psig_name);
1236 PL_psig_name = (SV**)NULL;
1237 PL_psig_ptr = (SV**)NULL;
1239 /* We need to NULL PL_psig_pend first, so that
1240 signal handlers know not to use it */
1241 int *psig_save = PL_psig_pend;
1242 PL_psig_pend = (int*)NULL;
1243 Safefree(psig_save);
1246 TAINTING_set(FALSE);
1247 TAINT_WARN_set(FALSE);
1248 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
1251 DEBUG_P(debprofdump());
1253 #ifdef USE_REENTRANT_API
1254 Perl_reentrant_free(aTHX);
1259 while (PL_regmatch_slab) {
1260 regmatch_slab *s = PL_regmatch_slab;
1261 PL_regmatch_slab = PL_regmatch_slab->next;
1265 /* As the absolutely last thing, free the non-arena SV for mess() */
1268 /* we know that type == SVt_PVMG */
1270 /* it could have accumulated taint magic */
1273 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1274 moremagic = mg->mg_moremagic;
1275 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1277 Safefree(mg->mg_ptr);
1281 /* we know that type >= SVt_PV */
1282 SvPV_free(PL_mess_sv);
1283 Safefree(SvANY(PL_mess_sv));
1284 Safefree(PL_mess_sv);
1291 =for apidoc perl_free
1293 Releases a Perl interpreter. See L<perlembed>.
1303 PERL_ARGS_ASSERT_PERL_FREE;
1305 if (PL_veto_cleanup)
1308 #ifdef PERL_TRACK_MEMPOOL
1311 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1312 * value as we're probably hunting memory leaks then
1314 if (PL_perl_destruct_level == 0) {
1315 const U32 old_debug = PL_debug;
1316 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1317 thread at thread exit. */
1319 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1320 "free this thread's memory\n");
1321 PL_debug &= ~ DEBUG_m_FLAG;
1323 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
1324 safesysfree(sTHX + (char *)(aTHXx->Imemory_debug_header.next));
1325 PL_debug = old_debug;
1330 #if defined(WIN32) || defined(NETWARE)
1331 # if defined(PERL_IMPLICIT_SYS)
1334 void *host = nw_internal_host;
1336 void *host = w32_internal_host;
1338 PerlMem_free(aTHXx);
1340 nw_delete_internal_host(host);
1342 win32_delete_internal_host(host);
1346 PerlMem_free(aTHXx);
1349 PerlMem_free(aTHXx);
1353 #if defined(USE_ITHREADS)
1354 /* provide destructors to clean up the thread key when libperl is unloaded */
1355 #ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1357 #if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
1358 #pragma fini "perl_fini"
1359 #elif defined(__sun) && !defined(__GNUC__)
1360 #pragma fini (perl_fini)
1364 #if defined(__GNUC__)
1365 __attribute__((destructor))
1370 if (PL_curinterp && !PL_veto_cleanup)
1375 #endif /* THREADS */
1378 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
1381 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1382 PL_exitlist[PL_exitlistlen].fn = fn;
1383 PL_exitlist[PL_exitlistlen].ptr = ptr;
1388 S_set_caret_X(pTHX) {
1390 GV* tmpgv = gv_fetchpvs("\030", GV_ADD|GV_NOTQUAL, SVt_PV); /* $^X */
1392 SV *const caret_x = GvSV(tmpgv);
1394 sv_setpv(caret_x, os2_execname(aTHX));
1396 # ifdef USE_KERN_PROC_PATHNAME
1401 mib[2] = KERN_PROC_PATHNAME;
1404 if (sysctl(mib, 4, NULL, &size, NULL, 0) == 0
1405 && size > 0 && size < MAXPATHLEN * MAXPATHLEN) {
1406 sv_grow(caret_x, size);
1408 if (sysctl(mib, 4, SvPVX(caret_x), &size, NULL, 0) == 0
1410 SvPOK_only(caret_x);
1411 SvCUR_set(caret_x, size - 1);
1416 # elif defined(USE_NSGETEXECUTABLEPATH)
1418 uint32_t size = sizeof(buf);
1420 _NSGetExecutablePath(buf, &size);
1421 if (size < MAXPATHLEN * MAXPATHLEN) {
1422 sv_grow(caret_x, size);
1423 if (_NSGetExecutablePath(SvPVX(caret_x), &size) == 0) {
1424 char *const tidied = realpath(SvPVX(caret_x), NULL);
1426 sv_setpv(caret_x, tidied);
1429 SvPOK_only(caret_x);
1430 SvCUR_set(caret_x, size);
1435 # elif defined(HAS_PROCSELFEXE)
1436 char buf[MAXPATHLEN];
1437 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1439 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1440 includes a spurious NUL which will cause $^X to fail in system
1441 or backticks (this will prevent extensions from being built and
1442 many tests from working). readlink is not meant to add a NUL.
1443 Normal readlink works fine.
1445 if (len > 0 && buf[len-1] == '\0') {
1449 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1450 returning the text "unknown" from the readlink rather than the path
1451 to the executable (or returning an error from the readlink). Any
1452 valid path has a '/' in it somewhere, so use that to validate the
1453 result. See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1455 if (len > 0 && memchr(buf, '/', len)) {
1456 sv_setpvn(caret_x, buf, len);
1460 /* Fallback to this: */
1461 sv_setpv(caret_x, PL_origargv[0]);
1467 =for apidoc perl_parse
1469 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1474 #define SET_CURSTASH(newstash) \
1475 if (PL_curstash != newstash) { \
1476 SvREFCNT_dec(PL_curstash); \
1477 PL_curstash = (HV *)SvREFCNT_inc(newstash); \
1481 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
1488 PERL_ARGS_ASSERT_PERL_PARSE;
1489 #ifndef MULTIPLICITY
1490 PERL_UNUSED_ARG(my_perl);
1492 #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) || defined(USE_HASH_SEED_DEBUG)
1494 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
1496 if (s && (atoi(s) == 1)) {
1497 unsigned char *seed= PERL_HASH_SEED;
1498 unsigned char *seed_end= PERL_HASH_SEED + PERL_HASH_SEED_BYTES;
1499 PerlIO_printf(Perl_debug_log, "HASH_FUNCTION = %s HASH_SEED = 0x", PERL_HASH_FUNC);
1500 while (seed < seed_end) {
1501 PerlIO_printf(Perl_debug_log, "%02x", *seed++);
1503 PerlIO_printf(Perl_debug_log, "\n");
1506 #endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1510 if (PL_origalen != 0) {
1511 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1514 /* Set PL_origalen be the sum of the contiguous argv[]
1515 * elements plus the size of the env in case that it is
1516 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
1517 * as the maximum modifiable length of $0. In the worst case
1518 * the area we are able to modify is limited to the size of
1519 * the original argv[0]. (See below for 'contiguous', though.)
1521 const char *s = NULL;
1524 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
1525 /* Do the mask check only if the args seem like aligned. */
1527 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1529 /* See if all the arguments are contiguous in memory. Note
1530 * that 'contiguous' is a loose term because some platforms
1531 * align the argv[] and the envp[]. If the arguments look
1532 * like non-aligned, assume that they are 'strictly' or
1533 * 'traditionally' contiguous. If the arguments look like
1534 * aligned, we just check that they are within aligned
1535 * PTRSIZE bytes. As long as no system has something bizarre
1536 * like the argv[] interleaved with some other data, we are
1537 * fine. (Did I just evoke Murphy's Law?) --jhi */
1538 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1540 for (i = 1; i < PL_origargc; i++) {
1541 if ((PL_origargv[i] == s + 1
1543 || PL_origargv[i] == s + 2
1548 (PL_origargv[i] > s &&
1550 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1561 #ifndef PERL_USE_SAFE_PUTENV
1562 /* Can we grab env area too to be used as the area for $0? */
1563 if (s && PL_origenviron && !PL_use_safe_putenv) {
1564 if ((PL_origenviron[0] == s + 1)
1567 (PL_origenviron[0] > s &&
1568 PL_origenviron[0] <=
1569 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1572 #ifndef OS2 /* ENVIRON is read by the kernel too. */
1573 s = PL_origenviron[0];
1576 my_setenv("NoNe SuCh", NULL);
1577 /* Force copy of environment. */
1578 for (i = 1; PL_origenviron[i]; i++) {
1579 if (PL_origenviron[i] == s + 1
1582 (PL_origenviron[i] > s &&
1583 PL_origenviron[i] <=
1584 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1587 s = PL_origenviron[i];
1595 #endif /* !defined(PERL_USE_SAFE_PUTENV) */
1597 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
1602 /* Come here if running an undumped a.out. */
1604 PL_origfilename = savepv(argv[0]);
1605 PL_do_undump = FALSE;
1606 cxstack_ix = -1; /* start label stack again */
1608 assert (!TAINT_get);
1610 S_set_caret_X(aTHX);
1612 init_postdump_symbols(argc,argv,env);
1617 op_free(PL_main_root);
1618 PL_main_root = NULL;
1620 PL_main_start = NULL;
1621 SvREFCNT_dec(PL_main_cv);
1625 oldscope = PL_scopestack_ix;
1626 PL_dowarn = G_WARN_OFF;
1631 parse_body(env,xsinit);
1632 if (PL_unitcheckav) {
1633 call_list(oldscope, PL_unitcheckav);
1636 PERL_SET_PHASE(PERL_PHASE_CHECK);
1637 call_list(oldscope, PL_checkav);
1645 /* my_exit() was called */
1646 while (PL_scopestack_ix > oldscope)
1649 SET_CURSTASH(PL_defstash);
1650 if (PL_unitcheckav) {
1651 call_list(oldscope, PL_unitcheckav);
1654 PERL_SET_PHASE(PERL_PHASE_CHECK);
1655 call_list(oldscope, PL_checkav);
1660 PerlIO_printf(Perl_error_log, "panic: top_env\n");
1668 /* This needs to stay in perl.c, as perl.c is compiled with different flags for
1669 miniperl, and we need to see those flags reflected in the values here. */
1671 /* What this returns is subject to change. Use the public interface in Config.
1674 S_Internals_V(pTHX_ CV *cv)
1677 #ifdef LOCAL_PATCH_COUNT
1678 const int local_patch_count = LOCAL_PATCH_COUNT;
1680 const int local_patch_count = 0;
1682 const int entries = 3 + local_patch_count;
1684 static const char non_bincompat_options[] =
1691 # ifdef PERL_DISABLE_PMC
1694 # ifdef PERL_DONT_CREATE_GVSV
1695 " PERL_DONT_CREATE_GVSV"
1697 # ifdef PERL_EXTERNAL_GLOB
1698 " PERL_EXTERNAL_GLOB"
1700 # ifdef PERL_IS_MINIPERL
1703 # ifdef PERL_MALLOC_WRAP
1706 # ifdef PERL_MEM_LOG
1709 # ifdef PERL_MEM_LOG_NOIMPL
1710 " PERL_MEM_LOG_NOIMPL"
1712 # ifdef PERL_PRESERVE_IVUV
1713 " PERL_PRESERVE_IVUV"
1715 # ifdef PERL_RELOCATABLE_INCPUSH
1716 " PERL_RELOCATABLE_INCPUSH"
1718 # ifdef PERL_USE_DEVEL
1721 # ifdef PERL_USE_SAFE_PUTENV
1722 " PERL_USE_SAFE_PUTENV"
1724 # ifdef UNLINK_ALL_VERSIONS
1725 " UNLINK_ALL_VERSIONS"
1727 # ifdef USE_ATTRIBUTES_FOR_PERLIO
1728 " USE_ATTRIBUTES_FOR_PERLIO"
1730 # ifdef USE_FAST_STDIO
1736 # ifdef USE_LOCALE_CTYPE
1739 # ifdef USE_PERL_ATOF
1742 # ifdef USE_SITECUSTOMIZE
1743 " USE_SITECUSTOMIZE"
1746 PERL_UNUSED_ARG(cv);
1747 PERL_UNUSED_ARG(items);
1749 EXTEND(SP, entries);
1751 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1752 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1753 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1757 PUSHs(Perl_newSVpvn_flags(aTHX_
1758 STR_WITH_LEN("Compiled at " __DATE__ " " __TIME__),
1761 PUSHs(Perl_newSVpvn_flags(aTHX_ STR_WITH_LEN("Compiled on " __DATE__),
1765 PUSHs(&PL_sv_undef);
1768 for (i = 1; i <= local_patch_count; i++) {
1769 /* This will be an undef, if PL_localpatches[i] is NULL. */
1770 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1776 #define INCPUSH_UNSHIFT 0x01
1777 #define INCPUSH_ADD_OLD_VERS 0x02
1778 #define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1779 #define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1780 #define INCPUSH_NOT_BASEDIR 0x10
1781 #define INCPUSH_CAN_RELOCATE 0x20
1782 #define INCPUSH_ADD_SUB_DIRS \
1783 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
1786 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
1790 int argc = PL_origargc;
1791 char **argv = PL_origargv;
1792 const char *scriptname = NULL;
1793 VOL bool dosearch = FALSE;
1795 bool doextract = FALSE;
1796 const char *cddir = NULL;
1797 #ifdef USE_SITECUSTOMIZE
1798 bool minus_f = FALSE;
1800 SV *linestr_sv = NULL;
1801 bool add_read_e_script = FALSE;
1802 U32 lex_start_flags = 0;
1804 PERL_SET_PHASE(PERL_PHASE_START);
1810 for (argc--,argv++; argc > 0; argc--,argv++) {
1811 if (argv[0][0] != '-' || !argv[0][1])
1817 #ifndef PERL_STRICT_CR
1841 if ((s = moreswitches(s)))
1846 #if SILENT_NO_TAINT_SUPPORT
1847 /* silently ignore */
1848 #elif NO_TAINT_SUPPORT
1849 Perl_croak("This perl was compiled without taint support. "
1850 "Cowardly refusing to run with -t or -T flags");
1852 CHECK_MALLOC_TOO_LATE_FOR('t');
1853 if( !TAINTING_get ) {
1854 TAINT_WARN_set(TRUE);
1861 #if SILENT_NO_TAINT_SUPPORT
1862 /* silently ignore */
1863 #elif NO_TAINT_SUPPORT
1864 Perl_croak("This perl was compiled without taint support. "
1865 "Cowardly refusing to run with -t or -T flags");
1867 CHECK_MALLOC_TOO_LATE_FOR('T');
1869 TAINT_WARN_set(FALSE);
1878 forbid_setid('e', FALSE);
1880 PL_e_script = newSVpvs("");
1881 add_read_e_script = TRUE;
1884 sv_catpv(PL_e_script, s);
1886 sv_catpv(PL_e_script, argv[1]);
1890 Perl_croak(aTHX_ "No code specified for -%c", c);
1891 sv_catpvs(PL_e_script, "\n");
1895 #ifdef USE_SITECUSTOMIZE
1901 case 'I': /* -I handled both here and in moreswitches() */
1902 forbid_setid('I', FALSE);
1903 if (!*++s && (s=argv[1]) != NULL) {
1907 STRLEN len = strlen(s);
1908 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
1911 Perl_croak(aTHX_ "No directory specified for -I");
1914 forbid_setid('S', FALSE);
1923 opts_prog = newSVpvs("use Config; Config::_V()");
1927 opts_prog = Perl_newSVpvf(aTHX_
1928 "use Config; Config::config_vars(qw%c%s%c)",
1932 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
1933 /* don't look for script or read stdin */
1934 scriptname = BIT_BUCKET;
1946 if (!*++s || isSPACE(*s)) {
1950 /* catch use of gnu style long options.
1951 Both of these exit immediately. */
1952 if (strEQ(s, "version"))
1954 if (strEQ(s, "help"))
1959 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1970 #ifndef SECURE_INTERNAL_GETENV
1973 (s = PerlEnv_getenv("PERL5OPT")))
1977 if (*s == '-' && *(s+1) == 'T') {
1978 #if SILENT_NO_TAINT_SUPPORT
1979 /* silently ignore */
1980 #elif NO_TAINT_SUPPORT
1981 Perl_croak("This perl was compiled without taint support. "
1982 "Cowardly refusing to run with -t or -T flags");
1984 CHECK_MALLOC_TOO_LATE_FOR('T');
1986 TAINT_WARN_set(FALSE);
1990 char *popt_copy = NULL;
2003 if (!strchr("CDIMUdmtwW", *s))
2004 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
2008 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
2009 s = popt_copy + (s - d);
2017 #if SILENT_NO_TAINT_SUPPORT
2018 /* silently ignore */
2019 #elif NO_TAINT_SUPPORT
2020 Perl_croak("This perl was compiled without taint support. "
2021 "Cowardly refusing to run with -t or -T flags");
2023 if( !TAINTING_get) {
2024 TAINT_WARN_set(TRUE);
2036 /* Set $^X early so that it can be used for relocatable paths in @INC */
2037 /* and for SITELIB_EXP in USE_SITECUSTOMIZE */
2038 assert (!TAINT_get);
2040 S_set_caret_X(aTHX);
2043 #if defined(USE_SITECUSTOMIZE)
2045 /* The games with local $! are to avoid setting errno if there is no
2046 sitecustomize script. "q%c...%c", 0, ..., 0 becomes "q\0...\0",
2047 ie a q() operator with a NUL byte as a the delimiter. This avoids
2048 problems with pathnames containing (say) ' */
2049 # ifdef PERL_IS_MINIPERL
2050 AV *const inc = GvAV(PL_incgv);
2051 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
2054 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2056 "BEGIN { do {local $!; -f q%c%"SVf"/buildcustomize.pl%c} && do q%c%"SVf"/buildcustomize.pl%c }",
2061 /* SITELIB_EXP is a function call on Win32. */
2062 const char *const raw_sitelib = SITELIB_EXP;
2064 /* process .../.. if PERL_RELOCATABLE_INC is defined */
2065 SV *sitelib_sv = mayberelocate(raw_sitelib, strlen(raw_sitelib),
2066 INCPUSH_CAN_RELOCATE);
2067 const char *const sitelib = SvPVX(sitelib_sv);
2068 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2070 "BEGIN { do {local $!; -f q%c%s/sitecustomize.pl%c} && do q%c%s/sitecustomize.pl%c }",
2073 assert (SvREFCNT(sitelib_sv) == 1);
2074 SvREFCNT_dec(sitelib_sv);
2081 scriptname = argv[0];
2084 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2086 else if (scriptname == NULL) {
2088 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
2094 assert (!TAINT_get);
2098 bool suidscript = FALSE;
2100 rsfp = open_script(scriptname, dosearch, &suidscript);
2102 rsfp = PerlIO_stdin();
2103 lex_start_flags = LEX_DONT_CLOSE_RSFP;
2106 validate_suid(rsfp);
2109 # if defined(SIGCHLD) || defined(SIGCLD)
2112 # define SIGCHLD SIGCLD
2114 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2115 if (sigstate == (Sighandler_t) SIG_IGN) {
2116 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2117 "Can't ignore signal CHLD, forcing to default");
2118 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2126 /* This will croak if suidscript is true, as -x cannot be used with
2128 forbid_setid('x', suidscript);
2129 /* Hence you can't get here if suidscript is true */
2131 linestr_sv = newSV_type(SVt_PV);
2132 lex_start_flags |= LEX_START_COPIED;
2133 find_beginning(linestr_sv, rsfp);
2134 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2135 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2139 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
2140 CvUNIQUE_on(PL_compcv);
2142 CvPADLIST(PL_compcv) = pad_new(0);
2144 PL_isarev = newHV();
2147 boot_core_UNIVERSAL();
2149 newXS("Internals::V", S_Internals_V, __FILE__);
2152 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
2154 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(SYMBIAN)
2160 # ifdef HAS_SOCKS5_INIT
2161 socks5_init(argv[0]);
2167 init_predump_symbols();
2168 /* init_postdump_symbols not currently designed to be called */
2169 /* more than once (ENV isn't cleared first, for example) */
2170 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
2172 init_postdump_symbols(argc,argv,env);
2174 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2175 * or explicitly in some platforms.
2176 * locale.c:Perl_init_i18nl10n() if the environment
2177 * look like the user wants to use UTF-8. */
2178 #if defined(__SYMBIAN32__)
2179 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2181 # ifndef PERL_IS_MINIPERL
2183 /* Requires init_predump_symbols(). */
2184 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
2189 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
2190 * and the default open disciplines. */
2191 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2192 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2194 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2195 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2196 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2198 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2199 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2200 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2202 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2203 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
2204 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2206 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2207 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2210 sv_setpvs(sv, ":utf8\0:utf8");
2212 sv_setpvs(sv, ":utf8\0");
2215 sv_setpvs(sv, "\0:utf8");
2224 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2225 if (strEQ(s, "unsafe"))
2226 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2227 else if (strEQ(s, "safe"))
2228 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2230 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2237 if (!TAINTING_get &&
2238 (s = PerlEnv_getenv("PERL_XMLDUMP"))) {
2242 PL_xmlfp = PerlIO_stdout();
2244 PL_xmlfp = PerlIO_open(s, "w");
2246 Perl_croak(aTHX_ "Can't open %s", s);
2248 my_setenv("PERL_XMLDUMP", NULL); /* hide from subprocs */
2254 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2255 PL_madskills = atoi(s);
2256 my_setenv("PERL_MADSKILLS", NULL); /* hide from subprocs */
2261 lex_start(linestr_sv, rsfp, lex_start_flags);
2263 SvREFCNT_dec(linestr_sv);
2265 PL_subname = newSVpvs("main");
2267 if (add_read_e_script)
2268 filter_add(read_e_script, NULL);
2270 /* now parse the script */
2272 SETERRNO(0,SS_NORMAL);
2273 if (yyparse(GRAMPROG) || PL_parser->error_count) {
2275 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
2277 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
2281 CopLINE_set(PL_curcop, 0);
2282 SET_CURSTASH(PL_defstash);
2284 SvREFCNT_dec(PL_e_script);
2292 SAVECOPFILE(PL_curcop);
2293 SAVECOPLINE(PL_curcop);
2294 gv_check(PL_defstash);
2303 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2304 dump_mstats("after compilation:");
2309 PL_restartjmpenv = NULL;
2315 =for apidoc perl_run
2317 Tells a Perl interpreter to run. See L<perlembed>.
2330 PERL_ARGS_ASSERT_PERL_RUN;
2331 #ifndef MULTIPLICITY
2332 PERL_UNUSED_ARG(my_perl);
2335 oldscope = PL_scopestack_ix;
2343 cxstack_ix = -1; /* start context stack again */
2345 case 0: /* normal completion */
2349 case 2: /* my_exit() */
2350 while (PL_scopestack_ix > oldscope)
2353 SET_CURSTASH(PL_defstash);
2354 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
2355 PL_endav && !PL_minus_c) {
2356 PERL_SET_PHASE(PERL_PHASE_END);
2357 call_list(oldscope, PL_endav);
2360 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2361 dump_mstats("after execution: ");
2367 POPSTACK_TO(PL_mainstack);
2370 PerlIO_printf(Perl_error_log, "panic: restartop in perl_run\n");
2381 S_run_body(pTHX_ I32 oldscope)
2384 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support (0x%x).\n",
2385 PL_sawampersand ? "Enabling" : "Omitting",
2386 (unsigned int)(PL_sawampersand)));
2388 if (!PL_restartop) {
2392 exit(0); /* less likely to core dump than my_exit(0) */
2396 if (DEBUG_x_TEST || DEBUG_B_TEST)
2397 dump_all_perl(!DEBUG_B_TEST);
2399 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
2403 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
2406 if (PERLDB_SINGLE && PL_DBsingle)
2407 sv_setiv(PL_DBsingle, 1);
2409 PERL_SET_PHASE(PERL_PHASE_INIT);
2410 call_list(oldscope, PL_initav);
2412 #ifdef PERL_DEBUG_READONLY_OPS
2413 if (PL_main_root && PL_main_root->op_slabbed)
2414 Slab_to_ro(OpSLAB(PL_main_root));
2420 PERL_SET_PHASE(PERL_PHASE_RUN);
2423 PL_restartjmpenv = NULL;
2424 PL_op = PL_restartop;
2428 else if (PL_main_start) {
2429 CvDEPTH(PL_main_cv) = 1;
2430 PL_op = PL_main_start;
2434 assert(0); /* NOTREACHED */
2438 =head1 SV Manipulation Functions
2440 =for apidoc p||get_sv
2442 Returns the SV of the specified Perl scalar. C<flags> are passed to
2443 C<gv_fetchpv>. If C<GV_ADD> is set and the
2444 Perl variable does not exist then it will be created. If C<flags> is zero
2445 and the variable does not exist then NULL is returned.
2451 Perl_get_sv(pTHX_ const char *name, I32 flags)
2455 PERL_ARGS_ASSERT_GET_SV;
2457 gv = gv_fetchpv(name, flags, SVt_PV);
2464 =head1 Array Manipulation Functions
2466 =for apidoc p||get_av
2468 Returns the AV of the specified Perl global or package array with the given
2469 name (so it won't work on lexical variables). C<flags> are passed
2470 to C<gv_fetchpv>. If C<GV_ADD> is set and the
2471 Perl variable does not exist then it will be created. If C<flags> is zero
2472 and the variable does not exist then NULL is returned.
2474 Perl equivalent: C<@{"$name"}>.
2480 Perl_get_av(pTHX_ const char *name, I32 flags)
2482 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
2484 PERL_ARGS_ASSERT_GET_AV;
2494 =head1 Hash Manipulation Functions
2496 =for apidoc p||get_hv
2498 Returns the HV of the specified Perl hash. C<flags> are passed to
2499 C<gv_fetchpv>. If C<GV_ADD> is set and the
2500 Perl variable does not exist then it will be created. If C<flags> is zero
2501 and the variable does not exist then NULL is returned.
2507 Perl_get_hv(pTHX_ const char *name, I32 flags)
2509 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
2511 PERL_ARGS_ASSERT_GET_HV;
2521 =head1 CV Manipulation Functions
2523 =for apidoc p||get_cvn_flags
2525 Returns the CV of the specified Perl subroutine. C<flags> are passed to
2526 C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2527 exist then it will be declared (which has the same effect as saying
2528 C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2529 then NULL is returned.
2531 =for apidoc p||get_cv
2533 Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
2539 Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
2541 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
2543 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2545 /* XXX this is probably not what they think they're getting.
2546 * It has the same effect as "sub name;", i.e. just a forward
2548 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
2549 return newSTUB(gv,0);
2556 /* Nothing in core calls this now, but we can't replace it with a macro and
2557 move it to mathoms.c as a macro would evaluate name twice. */
2559 Perl_get_cv(pTHX_ const char *name, I32 flags)
2561 PERL_ARGS_ASSERT_GET_CV;
2563 return get_cvn_flags(name, strlen(name), flags);
2566 /* Be sure to refetch the stack pointer after calling these routines. */
2570 =head1 Callback Functions
2572 =for apidoc p||call_argv
2574 Performs a callback to the specified named and package-scoped Perl subroutine
2575 with C<argv> (a NULL-terminated array of strings) as arguments. See L<perlcall>.
2577 Approximate Perl equivalent: C<&{"$sub_name"}(@$argv)>.
2583 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
2585 /* See G_* flags in cop.h */
2586 /* null terminated arg list */
2591 PERL_ARGS_ASSERT_CALL_ARGV;
2596 mXPUSHs(newSVpv(*argv,0));
2601 return call_pv(sub_name, flags);
2605 =for apidoc p||call_pv
2607 Performs a callback to the specified Perl sub. See L<perlcall>.
2613 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
2614 /* name of the subroutine */
2615 /* See G_* flags in cop.h */
2617 PERL_ARGS_ASSERT_CALL_PV;
2619 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
2623 =for apidoc p||call_method
2625 Performs a callback to the specified Perl method. The blessed object must
2626 be on the stack. See L<perlcall>.
2632 Perl_call_method(pTHX_ const char *methname, I32 flags)
2633 /* name of the subroutine */
2634 /* See G_* flags in cop.h */
2637 PERL_ARGS_ASSERT_CALL_METHOD;
2639 len = strlen(methname);
2641 /* XXX: sv_2mortal(newSVpvn_share(methname, len)) can be faster */
2642 return call_sv(newSVpvn_flags(methname, len, SVs_TEMP), flags | G_METHOD);
2645 /* May be called with any of a CV, a GV, or an SV containing the name. */
2647 =for apidoc p||call_sv
2649 Performs a callback to the Perl sub whose name is in the SV. See
2656 Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
2657 /* See G_* flags in cop.h */
2660 LOGOP myop; /* fake syntax tree node */
2665 bool oldcatch = CATCH_GET;
2667 OP* const oldop = PL_op;
2670 PERL_ARGS_ASSERT_CALL_SV;
2672 if (flags & G_DISCARD) {
2676 if (!(flags & G_WANT)) {
2677 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2682 Zero(&myop, 1, LOGOP);
2683 if (!(flags & G_NOARGS))
2684 myop.op_flags |= OPf_STACKED;
2685 myop.op_flags |= OP_GIMME_REVERSE(flags);
2689 EXTEND(PL_stack_sp, 1);
2690 *++PL_stack_sp = sv;
2692 oldscope = PL_scopestack_ix;
2694 if (PERLDB_SUB && PL_curstash != PL_debstash
2695 /* Handle first BEGIN of -d. */
2696 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
2697 /* Try harder, since this may have been a sighandler, thus
2698 * curstash may be meaningless. */
2699 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
2700 && !(flags & G_NODEBUG))
2701 myop.op_private |= OPpENTERSUB_DB;
2703 if (flags & G_METHOD) {
2704 Zero(&method_op, 1, UNOP);
2705 method_op.op_next = (OP*)&myop;
2706 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2707 method_op.op_type = OP_METHOD;
2708 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
2709 myop.op_type = OP_ENTERSUB;
2710 PL_op = (OP*)&method_op;
2713 if (!(flags & G_EVAL)) {
2715 CALL_BODY_SUB((OP*)&myop);
2716 retval = PL_stack_sp - (PL_stack_base + oldmark);
2717 CATCH_SET(oldcatch);
2720 myop.op_other = (OP*)&myop;
2722 create_eval_scope(flags|G_FAKINGEVAL);
2730 CALL_BODY_SUB((OP*)&myop);
2731 retval = PL_stack_sp - (PL_stack_base + oldmark);
2732 if (!(flags & G_KEEPERR)) {
2740 /* my_exit() was called */
2741 SET_CURSTASH(PL_defstash);
2745 assert(0); /* NOTREACHED */
2748 PL_restartjmpenv = NULL;
2749 PL_op = PL_restartop;
2753 PL_stack_sp = PL_stack_base + oldmark;
2754 if ((flags & G_WANT) == G_ARRAY)
2758 *++PL_stack_sp = &PL_sv_undef;
2763 if (PL_scopestack_ix > oldscope)
2764 delete_eval_scope();
2768 if (flags & G_DISCARD) {
2769 PL_stack_sp = PL_stack_base + oldmark;
2778 /* Eval a string. The G_EVAL flag is always assumed. */
2781 =for apidoc p||eval_sv
2783 Tells Perl to C<eval> the string in the SV. It supports the same flags
2784 as C<call_sv>, with the obvious exception of G_EVAL. See L<perlcall>.
2790 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
2792 /* See G_* flags in cop.h */
2796 UNOP myop; /* fake syntax tree node */
2797 VOL I32 oldmark = SP - PL_stack_base;
2800 OP* const oldop = PL_op;
2803 PERL_ARGS_ASSERT_EVAL_SV;
2805 if (flags & G_DISCARD) {
2812 Zero(&myop, 1, UNOP);
2813 EXTEND(PL_stack_sp, 1);
2814 *++PL_stack_sp = sv;
2816 if (!(flags & G_NOARGS))
2817 myop.op_flags = OPf_STACKED;
2818 myop.op_type = OP_ENTEREVAL;
2819 myop.op_flags |= OP_GIMME_REVERSE(flags);
2820 if (flags & G_KEEPERR)
2821 myop.op_flags |= OPf_SPECIAL;
2822 if (PL_reg_state.re_reparsing)
2823 myop.op_private = OPpEVAL_COPHH;
2825 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2826 * before a PUSHEVAL, which corrupts the stack after a croak */
2827 TAINT_PROPER("eval_sv()");
2833 if (PL_op == (OP*)(&myop)) {
2834 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2836 goto fail; /* failed in compilation */
2839 retval = PL_stack_sp - (PL_stack_base + oldmark);
2840 if (!(flags & G_KEEPERR)) {
2848 /* my_exit() was called */
2849 SET_CURSTASH(PL_defstash);
2853 assert(0); /* NOTREACHED */
2856 PL_restartjmpenv = NULL;
2857 PL_op = PL_restartop;
2862 PL_stack_sp = PL_stack_base + oldmark;
2863 if ((flags & G_WANT) == G_ARRAY)
2867 *++PL_stack_sp = &PL_sv_undef;
2873 if (flags & G_DISCARD) {
2874 PL_stack_sp = PL_stack_base + oldmark;
2884 =for apidoc p||eval_pv
2886 Tells Perl to C<eval> the given string and return an SV* result.
2892 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
2895 SV* sv = newSVpv(p, 0);
2897 PERL_ARGS_ASSERT_EVAL_PV;
2899 eval_sv(sv, G_SCALAR);
2908 /* just check empty string or undef? */
2909 if (croak_on_error) {
2910 SV * const errsv = ERRSV;
2911 if(SvTRUE_NN(errsv))
2912 /* replace with croak_sv? */
2913 Perl_croak_nocontext("%s", SvPV_nolen_const(errsv));
2919 /* Require a module. */
2922 =head1 Embedding Functions
2924 =for apidoc p||require_pv
2926 Tells Perl to C<require> the file named by the string argument. It is
2927 analogous to the Perl code C<eval "require '$file'">. It's even
2928 implemented that way; consider using load_module instead.
2933 Perl_require_pv(pTHX_ const char *pv)
2939 PERL_ARGS_ASSERT_REQUIRE_PV;
2941 PUSHSTACKi(PERLSI_REQUIRE);
2943 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2944 eval_sv(sv_2mortal(sv), G_DISCARD);
2950 S_usage(pTHX) /* XXX move this out into a module ? */
2952 /* This message really ought to be max 23 lines.
2953 * Removed -h because the user already knows that option. Others? */
2955 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
2956 minimum of 509 character string literals. */
2957 static const char * const usage_msg[] = {
2958 " -0[octal] specify record separator (\\0, if no argument)\n"
2959 " -a autosplit mode with -n or -p (splits $_ into @F)\n"
2960 " -C[number/list] enables the listed Unicode features\n"
2961 " -c check syntax only (runs BEGIN and CHECK blocks)\n"
2962 " -d[:debugger] run program under debugger\n"
2963 " -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
2964 " -e program one line of program (several -e's allowed, omit programfile)\n"
2965 " -E program like -e, but enables all optional features\n"
2966 " -f don't do $sitelib/sitecustomize.pl at startup\n"
2967 " -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
2968 " -i[extension] edit <> files in place (makes backup if extension supplied)\n"
2969 " -Idirectory specify @INC/#include directory (several -I's allowed)\n",
2970 " -l[octal] enable line ending processing, specifies line terminator\n"
2971 " -[mM][-]module execute \"use/no module...\" before executing program\n"
2972 " -n assume \"while (<>) { ... }\" loop around program\n"
2973 " -p assume loop like -n but print line also, like sed\n"
2974 " -s enable rudimentary parsing for switches after programfile\n"
2975 " -S look for programfile using PATH environment variable\n",
2976 " -t enable tainting warnings\n"
2977 " -T enable tainting checks\n"
2978 " -u dump core after parsing program\n"
2979 " -U allow unsafe operations\n"
2980 " -v print version, patchlevel and license\n"
2981 " -V[:variable] print configuration summary (or a single Config.pm variable)\n",
2982 " -w enable many useful warnings\n"
2983 " -W enable all warnings\n"
2984 " -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
2985 " -X disable all warnings\n"
2987 "Run 'perldoc perl' for more help with Perl.\n\n",
2990 const char * const *p = usage_msg;
2991 PerlIO *out = PerlIO_stdout();
2994 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
2997 PerlIO_puts(out, *p++);
3001 /* convert a string of -D options (or digits) into an int.
3002 * sets *s to point to the char after the options */
3006 Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
3008 static const char * const usage_msgd[] = {
3009 " Debugging flag values: (see also -d)\n"
3010 " p Tokenizing and parsing (with v, displays parse stack)\n"
3011 " s Stack snapshots (with v, displays all stacks)\n"
3012 " l Context (loop) stack processing\n"
3013 " t Trace execution\n"
3014 " o Method and overloading resolution\n",
3015 " c String/numeric conversions\n"
3016 " P Print profiling info, source file input state\n"
3017 " m Memory and SV allocation\n"
3018 " f Format processing\n"
3019 " r Regular expression parsing and execution\n"
3020 " x Syntax tree dump\n",
3021 " u Tainting checks\n"
3022 " H Hash dump -- usurps values()\n"
3023 " X Scratchpad allocation\n"
3025 " S Op slab allocation\n"
3027 " R Include reference counts of dumped variables (eg when using -Ds)\n",
3028 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
3029 " v Verbose: use in conjunction with other flags\n"
3030 " C Copy On Write\n"
3031 " A Consistency checks on internal structures\n"
3032 " q quiet - currently only suppresses the 'EXECUTING' message\n"
3033 " M trace smart match resolution\n"
3034 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
3039 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
3042 /* if adding extra options, remember to update DEBUG_MASK */
3043 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMB";
3045 for (; isALNUM(**s); (*s)++) {
3046 const char * const d = strchr(debopts,**s);
3048 i |= 1 << (d - debopts);
3049 else if (ckWARN_d(WARN_DEBUGGING))
3050 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3051 "invalid option -D%c, use -D'' to see choices\n", **s);
3054 else if (isDIGIT(**s)) {
3056 for (; isALNUM(**s); (*s)++) ;
3058 else if (givehelp) {
3059 const char *const *p = usage_msgd;
3060 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
3063 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
3064 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3065 "-Dp not implemented on this platform\n");
3071 /* This routine handles any switches that can be given during run */
3074 Perl_moreswitches(pTHX_ const char *s)
3078 const char option = *s; /* used to remember option in -m/-M code */
3080 PERL_ARGS_ASSERT_MORESWITCHES;
3088 SvREFCNT_dec(PL_rs);
3089 if (s[1] == 'x' && s[2]) {
3090 const char *e = s+=2;
3096 flags = PERL_SCAN_SILENT_ILLDIGIT;
3097 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3098 if (s + numlen < e) {
3099 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3103 PL_rs = newSVpvs("");
3104 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
3105 tmps = (U8*)SvPVX(PL_rs);
3106 uvchr_to_utf8(tmps, rschar);
3107 SvCUR_set(PL_rs, UNISKIP(rschar));
3112 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3113 if (rschar & ~((U8)~0))
3114 PL_rs = &PL_sv_undef;
3115 else if (!rschar && numlen >= 2)
3116 PL_rs = newSVpvs("");
3118 char ch = (char)rschar;
3119 PL_rs = newSVpvn(&ch, 1);
3122 sv_setsv(get_sv("/", GV_ADD), PL_rs);
3127 PL_unicode = parse_unicode_opts( (const char **)&s );
3128 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3134 while (*s && !isSPACE(*s)) ++s;
3135 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
3146 forbid_setid('d', FALSE);
3149 /* -dt indicates to the debugger that threads will be used */
3150 if (*s == 't' && !isALNUM(s[1])) {
3152 my_setenv("PERL5DB_THREADED", "1");
3155 /* The following permits -d:Mod to accepts arguments following an =
3156 in the fashion that -MSome::Mod does. */
3157 if (*s == ':' || *s == '=') {
3164 sv = newSVpvs("no Devel::");
3166 sv = newSVpvs("use Devel::");
3170 end = s + strlen(s);
3172 /* We now allow -d:Module=Foo,Bar and -d:-Module */
3173 while(isALNUM(*s) || *s==':') ++s;
3175 sv_catpvn(sv, start, end - start);
3177 sv_catpvn(sv, start, s-start);
3178 /* Don't use NUL as q// delimiter here, this string goes in the
3180 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
3183 my_setenv("PERL5DB", SvPV_nolen_const(sv));
3187 PL_perldb = PERLDB_ALL;
3194 forbid_setid('D', FALSE);
3196 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
3197 #else /* !DEBUGGING */
3198 if (ckWARN_d(WARN_DEBUGGING))
3199 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3200 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
3201 for (s++; isALNUM(*s); s++) ;
3208 Safefree(PL_inplace);
3209 #if defined(__CYGWIN__) /* do backup extension automagically */
3210 if (*(s+1) == '\0') {
3211 PL_inplace = savepvs(".bak");
3214 #endif /* __CYGWIN__ */
3216 const char * const start = ++s;
3217 while (*s && !isSPACE(*s))
3220 PL_inplace = savepvn(start, s - start);
3224 if (*s == '-') /* Additional switches on #! line. */
3228 case 'I': /* -I handled both here and in parse_body() */
3229 forbid_setid('I', FALSE);
3231 while (*s && isSPACE(*s))
3236 /* ignore trailing spaces (possibly followed by other switches) */
3238 for (e = p; *e && !isSPACE(*e); e++) ;
3242 } while (*p && *p != '-');
3244 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
3250 Perl_croak(aTHX_ "No directory specified for -I");
3256 SvREFCNT_dec(PL_ors_sv);
3262 PL_ors_sv = newSVpvs("\n");
3263 numlen = 3 + (*s == '0');
3264 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
3268 if (RsPARA(PL_rs)) {
3269 PL_ors_sv = newSVpvs("\n\n");
3272 PL_ors_sv = newSVsv(PL_rs);
3277 forbid_setid('M', FALSE); /* XXX ? */
3280 forbid_setid('m', FALSE); /* XXX ? */
3285 const char *use = "use ";
3287 /* -M-foo == 'no foo' */
3288 /* Leading space on " no " is deliberate, to make both
3289 possibilities the same length. */
3290 if (*s == '-') { use = " no "; ++s; }
3291 sv = newSVpvn(use,4);
3293 /* We allow -M'Module qw(Foo Bar)' */
3294 while(isALNUM(*s) || *s==':') {
3303 Perl_croak(aTHX_ "Module name required with -%c option",
3306 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3307 "contains single ':'",
3308 (int)(s - start), start, option);
3309 end = s + strlen(s);
3311 sv_catpvn(sv, start, end - start);
3312 if (option == 'm') {
3314 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
3315 sv_catpvs( sv, " ()");
3318 sv_catpvn(sv, start, s-start);
3319 /* Use NUL as q''-delimiter. */
3320 sv_catpvs(sv, " split(/,/,q\0");
3322 sv_catpvn(sv, s, end - s);
3323 sv_catpvs(sv, "\0)");
3326 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
3329 Perl_croak(aTHX_ "Missing argument to -%c", option);
3340 forbid_setid('s', FALSE);
3341 PL_doswitches = TRUE;
3346 #if SILENT_NO_TAINT_SUPPORT
3347 /* silently ignore */
3348 #elif NO_TAINT_SUPPORT
3349 Perl_croak("This perl was compiled without taint support. "
3350 "Cowardly refusing to run with -t or -T flags");
3358 PL_do_undump = TRUE;
3368 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
3369 PL_dowarn |= G_WARN_ON;
3374 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
3375 if (!specialWARN(PL_compiling.cop_warnings))
3376 PerlMemShared_free(PL_compiling.cop_warnings);
3377 PL_compiling.cop_warnings = pWARN_ALL ;
3381 PL_dowarn = G_WARN_ALL_OFF;
3382 if (!specialWARN(PL_compiling.cop_warnings))
3383 PerlMemShared_free(PL_compiling.cop_warnings);
3384 PL_compiling.cop_warnings = pWARN_NONE ;
3391 if (s[0] == '-') /* Additional switches on #! line. */
3396 #if defined(WIN32) || !defined(PERL_STRICT_CR)
3402 #ifdef ALTERNATE_SHEBANG
3403 case 'S': /* OS/2 needs -S on "extproc" line. */
3406 case 'e': case 'f': case 'x': case 'E':
3407 #ifndef ALTERNATE_SHEBANG
3411 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
3414 "Unrecognized switch: -%.1s (-h will show valid options)",s
3424 PerlIO * PIO_stdout;
3425 if (!sv_derived_from(PL_patchlevel, "version"))
3426 upg_version(PL_patchlevel, TRUE);
3429 SV* level= vstringify(PL_patchlevel);
3430 #ifdef PERL_PATCHNUM
3431 # ifdef PERL_GIT_UNCOMMITTED_CHANGES
3432 SV *num = newSVpvs(PERL_PATCHNUM "*");
3434 SV *num = newSVpvs(PERL_PATCHNUM);
3437 STRLEN level_len, num_len;
3438 char * level_str, * num_str;
3439 num_str = SvPV(num, num_len);
3440 level_str = SvPV(level, level_len);
3441 if (num_len>=level_len && strnEQ(num_str,level_str,level_len)) {
3442 SvREFCNT_dec(level);
3445 Perl_sv_catpvf(aTHX_ level, " (%"SVf")", num);
3450 PIO_stdout = PerlIO_stdout();
3451 PerlIO_printf(PIO_stdout,
3452 "\nThis is perl " STRINGIFY(PERL_REVISION)
3453 ", version " STRINGIFY(PERL_VERSION)
3454 ", subversion " STRINGIFY(PERL_SUBVERSION)
3455 " (%"SVf") built for " ARCHNAME, level
3457 SvREFCNT_dec(level);
3460 PIO_stdout = PerlIO_stdout();
3461 /* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3462 PerlIO_printf(PIO_stdout,
3463 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
3464 SVfARG(vstringify(PL_patchlevel))));
3465 PerlIO_printf(PIO_stdout,
3466 Perl_form(aTHX_ " built under %s at %s %s\n",
3467 OSNAME, __DATE__, __TIME__));
3468 PerlIO_printf(PIO_stdout,
3469 Perl_form(aTHX_ " OS Specific Release: %s\n",
3472 #if defined(LOCAL_PATCH_COUNT)
3473 if (LOCAL_PATCH_COUNT > 0)
3474 PerlIO_printf(PIO_stdout,
3475 "\n(with %d registered patch%s, "
3476 "see perl -V for more detail)",
3478 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
3481 PerlIO_printf(PIO_stdout,
3482 "\n\nCopyright 1987-2012, Larry Wall\n");
3484 PerlIO_printf(PIO_stdout,
3485 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
3488 PerlIO_printf(PIO_stdout,
3489 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3490 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
3493 PerlIO_printf(PIO_stdout,
3494 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
3495 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
3498 PerlIO_printf(PIO_stdout,
3499 "BeOS port Copyright Tom Spindler, 1997-1999\n");
3502 PerlIO_printf(PIO_stdout,
3503 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
3506 PerlIO_printf(PIO_stdout,
3507 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
3510 PerlIO_printf(PIO_stdout,
3511 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
3514 PerlIO_printf(PIO_stdout,
3515 "WINCE port by Rainer Keuchel, 2001-2002\n"
3516 "Built on " __DATE__ " " __TIME__ "\n\n");
3519 #ifdef __SYMBIAN32__
3520 PerlIO_printf(PIO_stdout,
3521 "Symbian port by Nokia, 2004-2005\n");
3523 #ifdef BINARY_BUILD_NOTICE
3524 BINARY_BUILD_NOTICE;
3526 PerlIO_printf(PIO_stdout,
3528 Perl may be copied only under the terms of either the Artistic License or the\n\
3529 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
3530 Complete documentation for Perl, including FAQ lists, should be found on\n\
3531 this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
3532 Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
3536 /* compliments of Tom Christiansen */
3538 /* unexec() can be found in the Gnu emacs distribution */
3539 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
3542 #include <lib$routines.h>
3546 Perl_my_unexec(pTHX)
3548 PERL_UNUSED_CONTEXT;
3550 SV * prog = newSVpv(BIN_EXP, 0);
3551 SV * file = newSVpv(PL_origfilename, 0);
3555 sv_catpvs(prog, "/perl");
3556 sv_catpvs(file, ".perldump");
3558 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3559 /* unexec prints msg to stderr in case of failure */
3560 PerlProc_exit(status);
3563 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
3564 # elif defined(WIN32) || defined(__CYGWIN__)
3565 Perl_croak(aTHX_ "dump is not supported");
3567 ABORT(); /* for use with undump */
3572 /* initialize curinterp */
3578 # define PERLVAR(prefix,var,type)
3579 # define PERLVARA(prefix,var,n,type)
3580 # if defined(PERL_IMPLICIT_CONTEXT)
3581 # define PERLVARI(prefix,var,type,init) aTHX->prefix##var = init;
3582 # define PERLVARIC(prefix,var,type,init) aTHX->prefix##var = init;
3584 # define PERLVARI(prefix,var,type,init) PERL_GET_INTERP->var = init;
3585 # define PERLVARIC(prefix,var,type,init) PERL_GET_INTERP->var = init;
3587 # include "intrpvar.h"
3593 # define PERLVAR(prefix,var,type)
3594 # define PERLVARA(prefix,var,n,type)
3595 # define PERLVARI(prefix,var,type,init) PL_##var = init;
3596 # define PERLVARIC(prefix,var,type,init) PL_##var = init;
3597 # include "intrpvar.h"
3604 /* As these are inside a structure, PERLVARI isn't capable of initialising
3606 PL_reg_oldcurpm = PL_reg_curpm = NULL;
3607 PL_reg_poscache = PL_reg_starttry = NULL;
3611 S_init_main_stash(pTHX)
3616 PL_curstash = PL_defstash = (HV *)SvREFCNT_inc_simple_NN(newHV());
3617 /* We know that the string "main" will be in the global shared string
3618 table, so it's a small saving to use it rather than allocate another
3620 PL_curstname = newSVpvs_share("main");
3621 gv = gv_fetchpvs("main::", GV_ADD|GV_NOTQUAL, SVt_PVHV);
3622 /* If we hadn't caused another reference to "main" to be in the shared
3623 string table above, then it would be worth reordering these two,
3624 because otherwise all we do is delete "main" from it as a consequence
3625 of the SvREFCNT_dec, only to add it again with hv_name_set */
3626 SvREFCNT_dec(GvHV(gv));
3627 hv_name_set(PL_defstash, "main", 4, 0);
3628 GvHV(gv) = MUTABLE_HV(SvREFCNT_inc_simple(PL_defstash));
3630 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpvs("INC", GV_ADD|GV_NOTQUAL,
3632 SvREFCNT_inc_simple_void(PL_incgv); /* Don't allow it to be freed */
3633 GvMULTI_on(PL_incgv);
3634 PL_hintgv = gv_fetchpvs("\010", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^H */
3635 GvMULTI_on(PL_hintgv);
3636 PL_defgv = gv_fetchpvs("_", GV_ADD|GV_NOTQUAL, SVt_PVAV);
3637 SvREFCNT_inc_simple_void(PL_defgv);
3638 PL_errgv = gv_HVadd(gv_fetchpvs("@", GV_ADD|GV_NOTQUAL, SVt_PV));
3639 SvREFCNT_inc_simple_void(PL_errgv);
3640 GvMULTI_on(PL_errgv);
3641 PL_replgv = gv_fetchpvs("\022", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^R */
3642 GvMULTI_on(PL_replgv);
3643 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
3644 #ifdef PERL_DONT_CREATE_GVSV
3647 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
3649 SET_CURSTASH(PL_defstash);
3650 CopSTASH_set(&PL_compiling, PL_defstash);
3651 PL_debstash = GvHV(gv_fetchpvs("DB::", GV_ADDMULTI, SVt_PVHV));
3652 PL_globalstash = GvHV(gv_fetchpvs("CORE::GLOBAL::", GV_ADDMULTI,
3654 /* We must init $/ before switches are processed. */
3655 sv_setpvs(get_sv("/", GV_ADD), "\n");
3659 S_open_script(pTHX_ const char *scriptname, bool dosearch, bool *suidscript)
3662 PerlIO *rsfp = NULL;
3665 PERL_ARGS_ASSERT_OPEN_SCRIPT;
3668 PL_origfilename = savepvs("-e");
3671 /* if find_script() returns, it returns a malloc()-ed value */
3672 scriptname = PL_origfilename = find_script(scriptname, dosearch, NULL, 1);
3674 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
3675 const char *s = scriptname + 8;
3681 * Tell apart "normal" usage of fdscript, e.g.
3682 * with bash on FreeBSD:
3683 * perl <( echo '#!perl -DA'; echo 'print "$0\n"')
3684 * from usage in suidperl.
3685 * Does any "normal" usage leave garbage after the number???
3686 * Is it a mistake to use a similar /dev/fd/ construct for
3691 * Be supersafe and do some sanity-checks.
3692 * Still, can we be sure we got the right thing?
3695 Perl_croak(aTHX_ "Wrong syntax (suid) fd script name \"%s\"\n", s);
3698 Perl_croak(aTHX_ "Missing (suid) fd script name\n");
3700 scriptname = savepv(s + 1);
3701 Safefree(PL_origfilename);
3702 PL_origfilename = (char *)scriptname;
3707 CopFILE_free(PL_curcop);
3708 CopFILE_set(PL_curcop, PL_origfilename);
3709 if (*PL_origfilename == '-' && PL_origfilename[1] == '\0')
3710 scriptname = (char *)"";
3711 if (fdscript >= 0) {
3712 rsfp = PerlIO_fdopen(fdscript,PERL_SCRIPT_MODE);
3714 else if (!*scriptname) {
3715 forbid_setid(0, *suidscript);
3719 #ifdef FAKE_BIT_BUCKET
3720 /* This hack allows one not to have /dev/null (or BIT_BUCKET as it
3721 * is called) and still have the "-e" work. (Believe it or not,
3722 * a /dev/null is required for the "-e" to work because source
3723 * filter magic is used to implement it. ) This is *not* a general
3724 * replacement for a /dev/null. What we do here is create a temp
3725 * file (an empty file), open up that as the script, and then
3726 * immediately close and unlink it. Close enough for jazz. */
3727 #define FAKE_BIT_BUCKET_PREFIX "/tmp/perlnull-"
3728 #define FAKE_BIT_BUCKET_SUFFIX "XXXXXXXX"
3729 #define FAKE_BIT_BUCKET_TEMPLATE FAKE_BIT_BUCKET_PREFIX FAKE_BIT_BUCKET_SUFFIX
3730 char tmpname[sizeof(FAKE_BIT_BUCKET_TEMPLATE)] = {
3731 FAKE_BIT_BUCKET_TEMPLATE
3733 const char * const err = "Failed to create a fake bit bucket";
3734 if (strEQ(scriptname, BIT_BUCKET)) {
3735 #ifdef HAS_MKSTEMP /* Hopefully mkstemp() is safe here. */
3736 int tmpfd = mkstemp(tmpname);
3738 scriptname = tmpname;
3741 Perl_croak(aTHX_ err);
3744 scriptname = mktemp(tmpname);
3746 Perl_croak(aTHX_ err);
3751 rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
3752 #ifdef FAKE_BIT_BUCKET
3753 if (memEQ(scriptname, FAKE_BIT_BUCKET_PREFIX,
3754 sizeof(FAKE_BIT_BUCKET_PREFIX) - 1)
3755 && strlen(scriptname) == sizeof(tmpname) - 1) {
3758 scriptname = BIT_BUCKET;
3762 /* PSz 16 Sep 03 Keep neat error message */
3764 Perl_croak(aTHX_ "Can't open "BIT_BUCKET": %s\n", Strerror(errno));
3766 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3767 CopFILE(PL_curcop), Strerror(errno));
3769 #if defined(HAS_FCNTL) && defined(F_SETFD)
3770 /* ensure close-on-exec */
3771 fcntl(PerlIO_fileno(rsfp), F_SETFD, 1);
3777 * I_SYSSTATVFS HAS_FSTATVFS
3779 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
3780 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
3781 * here so that metaconfig picks them up. */
3784 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
3785 /* Don't even need this function. */
3788 S_validate_suid(pTHX_ PerlIO *rsfp)
3790 const UV my_uid = PerlProc_getuid();
3791 const UV my_euid = PerlProc_geteuid();
3792 const UV my_gid = PerlProc_getgid();
3793 const UV my_egid = PerlProc_getegid();
3795 PERL_ARGS_ASSERT_VALIDATE_SUID;
3797 if (my_euid != my_uid || my_egid != my_gid) { /* (suidperl doesn't exist, in fact) */
3800 PerlLIO_fstat(PerlIO_fileno(rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3801 if ((my_euid != my_uid && my_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3803 (my_egid != my_gid && my_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3806 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3807 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3808 /* not set-id, must be wrapped */
3811 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3814 S_find_beginning(pTHX_ SV* linestr_sv, PerlIO *rsfp)
3820 PERL_ARGS_ASSERT_FIND_BEGINNING;
3822 /* skip forward in input to the real script? */
3825 if ((s = sv_gets(linestr_sv, rsfp, 0)) == NULL)
3826 Perl_croak(aTHX_ "No Perl script found in input\n");
3828 } while (!(*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))));
3829 PerlIO_ungetc(rsfp, '\n'); /* to keep line count right */
3830 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3832 while (*s == ' ' || *s == '\t') s++;
3834 while (isDIGIT(s2[-1]) || s2[-1] == '-' || s2[-1] == '.'
3835 || s2[-1] == '_') s2--;
3836 if (strnEQ(s2-4,"perl",4))
3837 while ((s = moreswitches(s)))
3846 /* no need to do anything here any more if we don't
3848 #if !NO_TAINT_SUPPORT
3850 const UV my_uid = PerlProc_getuid();
3851 const UV my_euid = PerlProc_geteuid();
3852 const UV my_gid = PerlProc_getgid();
3853 const UV my_egid = PerlProc_getegid();
3855 /* Should not happen: */
3856 CHECK_MALLOC_TAINT(my_uid && (my_euid != my_uid || my_egid != my_gid));
3857 TAINTING_set( TAINTING_get | (my_uid && (my_euid != my_uid || my_egid != my_gid)) );
3861 * Should go by suidscript, not uid!=euid: why disallow
3862 * system("ls") in scripts run from setuid things?
3863 * Or, is this run before we check arguments and set suidscript?
3864 * What about SETUID_SCRIPTS_ARE_SECURE_NOW: could we use fdscript then?
3865 * (We never have suidscript, can we be sure to have fdscript?)
3866 * Or must then go by UID checks? See comments in forbid_setid also.
3870 /* This is used very early in the lifetime of the program,
3871 * before even the options are parsed, so PL_tainting has
3872 * not been initialized properly. */
3874 Perl_doing_taint(int argc, char *argv[], char *envp[])
3876 #ifndef PERL_IMPLICIT_SYS
3877 /* If we have PERL_IMPLICIT_SYS we can't call getuid() et alia
3878 * before we have an interpreter-- and the whole point of this
3879 * function is to be called at such an early stage. If you are on
3880 * a system with PERL_IMPLICIT_SYS but you do have a concept of
3881 * "tainted because running with altered effective ids', you'll
3882 * have to add your own checks somewhere in here. The two most
3883 * known samples of 'implicitness' are Win32 and NetWare, neither
3884 * of which has much of concept of 'uids'. */
3885 int uid = PerlProc_getuid();
3886 int euid = PerlProc_geteuid();
3887 int gid = PerlProc_getgid();
3888 int egid = PerlProc_getegid();
3895 if (uid && (euid != uid || egid != gid))
3897 #endif /* !PERL_IMPLICIT_SYS */
3898 /* This is a really primitive check; environment gets ignored only
3899 * if -T are the first chars together; otherwise one gets
3900 * "Too late" message. */
3901 if ( argc > 1 && argv[1][0] == '-'
3902 && (argv[1][1] == 't' || argv[1][1] == 'T') )
3907 /* Passing the flag as a single char rather than a string is a slight space
3908 optimisation. The only message that isn't /^-.$/ is
3909 "program input from stdin", which is substituted in place of '\0', which
3910 could never be a command line flag. */
3912 S_forbid_setid(pTHX_ const char flag, const bool suidscript) /* g */
3915 char string[3] = "-x";
3916 const char *message = "program input from stdin";
3923 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
3924 if (PerlProc_getuid() != PerlProc_geteuid())
3925 Perl_croak(aTHX_ "No %s allowed while running setuid", message);
3926 if (PerlProc_getgid() != PerlProc_getegid())
3927 Perl_croak(aTHX_ "No %s allowed while running setgid", message);
3928 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3930 Perl_croak(aTHX_ "No %s allowed with (suid) fdscript", message);
3934 Perl_init_dbargs(pTHX)
3936 AV *const args = PL_dbargs = GvAV(gv_AVadd((gv_fetchpvs("DB::args",
3941 /* Someone has already created it.
3942 It might have entries, and if we just turn off AvREAL(), they will
3943 "leak" until global destruction. */
3945 if (SvTIED_mg((const SV *)args, PERL_MAGIC_tied))
3946 Perl_croak(aTHX_ "Cannot set tied @DB::args");
3948 AvREIFY_only(PL_dbargs);
3952 Perl_init_debugger(pTHX)
3955 HV * const ostash = PL_curstash;
3957 PL_curstash = (HV *)SvREFCNT_inc_simple(PL_debstash);
3959 Perl_init_dbargs(aTHX);
3960 PL_DBgv = gv_fetchpvs("DB::DB", GV_ADDMULTI, SVt_PVGV);
3961 PL_DBline = gv_fetchpvs("DB::dbline", GV_ADDMULTI, SVt_PVAV);
3962 PL_DBsub = gv_HVadd(gv_fetchpvs("DB::sub", GV_ADDMULTI, SVt_PVHV));
3963 PL_DBsingle = GvSV((gv_fetchpvs("DB::single", GV_ADDMULTI, SVt_PV)));
3964 if (!SvIOK(PL_DBsingle))
3965 sv_setiv(PL_DBsingle, 0);
3966 PL_DBtrace = GvSV((gv_fetchpvs("DB::trace", GV_ADDMULTI, SVt_PV)));
3967 if (!SvIOK(PL_DBtrace))
3968 sv_setiv(PL_DBtrace, 0);
3969 PL_DBsignal = GvSV((gv_fetchpvs("DB::signal", GV_ADDMULTI, SVt_PV)));
3970 if (!SvIOK(PL_DBsignal))
3971 sv_setiv(PL_DBsignal, 0);
3972 SvREFCNT_dec(PL_curstash);
3973 PL_curstash = ostash;
3976 #ifndef STRESS_REALLOC
3977 #define REASONABLE(size) (size)
3979 #define REASONABLE(size) (1) /* unreasonable */
3983 Perl_init_stacks(pTHX)
3986 /* start with 128-item stack and 8K cxstack */
3987 PL_curstackinfo = new_stackinfo(REASONABLE(128),
3988 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3989 PL_curstackinfo->si_type = PERLSI_MAIN;
3990 PL_curstack = PL_curstackinfo->si_stack;
3991 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
3993 PL_stack_base = AvARRAY(PL_curstack);
3994 PL_stack_sp = PL_stack_base;
3995 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
3997 Newx(PL_tmps_stack,REASONABLE(128),SV*);
4000 PL_tmps_max = REASONABLE(128);
4002 Newx(PL_markstack,REASONABLE(32),I32);
4003 PL_markstack_ptr = PL_markstack;
4004 PL_markstack_max = PL_markstack + REASONABLE(32);
4008 Newx(PL_scopestack,REASONABLE(32),I32);
4010 Newx(PL_scopestack_name,REASONABLE(32),const char*);
4012 PL_scopestack_ix = 0;
4013 PL_scopestack_max = REASONABLE(32);
4015 Newx(PL_savestack,REASONABLE(128),ANY);
4016 PL_savestack_ix = 0;
4017 PL_savestack_max = REASONABLE(128);
4026 while (PL_curstackinfo->si_next)
4027 PL_curstackinfo = PL_curstackinfo->si_next;
4028 while (PL_curstackinfo) {
4029 PERL_SI *p = PL_curstackinfo->si_prev;
4030 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
4031 Safefree(PL_curstackinfo->si_cxstack);
4032 Safefree(PL_curstackinfo);
4033 PL_curstackinfo = p;
4035 Safefree(PL_tmps_stack);
4036 Safefree(PL_markstack);
4037 Safefree(PL_scopestack);
4039 Safefree(PL_scopestack_name);
4041 Safefree(PL_savestack);
4045 Perl_populate_isa(pTHX_ const char *name, STRLEN len, ...)
4047 GV *const gv = gv_fetchpvn(name, len, GV_ADD | GV_ADDMULTI, SVt_PVAV);
4048 AV *const isa = GvAVn(gv);
4051 PERL_ARGS_ASSERT_POPULATE_ISA;
4053 if(AvFILLp(isa) != -1)
4056 /* NOTE: No support for tied ISA */
4058 va_start(args, len);
4060 const char *const parent = va_arg(args, const char*);
4065 parent_len = va_arg(args, size_t);
4067 /* Arguments are supplied with a trailing :: */
4068 assert(parent_len > 2);
4069 assert(parent[parent_len - 1] == ':');
4070 assert(parent[parent_len - 2] == ':');
4071 av_push(isa, newSVpvn(parent, parent_len - 2));
4072 (void) gv_fetchpvn(parent, parent_len, GV_ADD, SVt_PVGV);
4079 S_init_predump_symbols(pTHX)
4085 sv_setpvs(get_sv("\"", GV_ADD), " ");
4086 PL_ofsgv = (GV*)SvREFCNT_inc(gv_fetchpvs(",", GV_ADD|GV_NOTQUAL, SVt_PV));
4089 /* Historically, PVIOs were blessed into IO::Handle, unless
4090 FileHandle was loaded, in which case they were blessed into
4091 that. Action at a distance.
4092 However, if we simply bless into IO::Handle, we break code
4093 that assumes that PVIOs will have (among others) a seek
4094 method. IO::File inherits from IO::Handle and IO::Seekable,
4095 and provides the needed methods. But if we simply bless into
4096 it, then we break code that assumed that by loading
4097 IO::Handle, *it* would work.
4098 So a compromise is to set up the correct @IO::File::ISA,
4099 so that code that does C<use IO::Handle>; will still work.
4102 Perl_populate_isa(aTHX_ STR_WITH_LEN("IO::File::ISA"),
4103 STR_WITH_LEN("IO::Handle::"),
4104 STR_WITH_LEN("IO::Seekable::"),
4105 STR_WITH_LEN("Exporter::"),
4108 PL_stdingv = gv_fetchpvs("STDIN", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4109 GvMULTI_on(PL_stdingv);
4110 io = GvIOp(PL_stdingv);
4111 IoTYPE(io) = IoTYPE_RDONLY;
4112 IoIFP(io) = PerlIO_stdin();
4113 tmpgv = gv_fetchpvs("stdin", GV_ADD|GV_NOTQUAL, SVt_PV);
4115 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4117 tmpgv = gv_fetchpvs("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4120 IoTYPE(io) = IoTYPE_WRONLY;
4121 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
4123 tmpgv = gv_fetchpvs("stdout", GV_ADD|GV_NOTQUAL, SVt_PV);
4125 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4127 PL_stderrgv = gv_fetchpvs("STDERR", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4128 GvMULTI_on(PL_stderrgv);
4129 io = GvIOp(PL_stderrgv);
4130 IoTYPE(io) = IoTYPE_WRONLY;
4131 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
4132 tmpgv = gv_fetchpvs("stderr", GV_ADD|GV_NOTQUAL, SVt_PV);
4134 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4136 PL_statname = newSVpvs(""); /* last filename we did stat on */
4140 Perl_init_argv_symbols(pTHX_ register int argc, register char **argv)
4144 PERL_ARGS_ASSERT_INIT_ARGV_SYMBOLS;
4146 argc--,argv++; /* skip name of script */
4147 if (PL_doswitches) {
4148 for (; argc > 0 && **argv == '-'; argc--,argv++) {
4152 if (argv[0][1] == '-' && !argv[0][2]) {
4156 if ((s = strchr(argv[0], '='))) {
4157 const char *const start_name = argv[0] + 1;
4158 sv_setpv(GvSV(gv_fetchpvn_flags(start_name, s - start_name,
4159 TRUE, SVt_PV)), s + 1);
4162 sv_setiv(GvSV(gv_fetchpv(argv[0]+1, GV_ADD, SVt_PV)),1);
4165 if ((PL_argvgv = gv_fetchpvs("ARGV", GV_ADD|GV_NOTQUAL, SVt_PVAV))) {
4166 GvMULTI_on(PL_argvgv);
4167 (void)gv_AVadd(PL_argvgv);
4168 av_clear(GvAVn(PL_argvgv));
4169 for (; argc > 0; argc--,argv++) {
4170 SV * const sv = newSVpv(argv[0],0);
4171 av_push(GvAVn(PL_argvgv),sv);
4172 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
4173 if (PL_unicode & PERL_UNICODE_ARGV_FLAG)
4176 if (PL_unicode & PERL_UNICODE_WIDESYSCALLS_FLAG) /* Sarathy? */
4177 (void)sv_utf8_decode(sv);
4181 if (PL_inplace && (!PL_argvgv || AvFILL(GvAV(PL_argvgv)) == -1))
4182 Perl_ck_warner_d(aTHX_ packWARN(WARN_INPLACE),
4183 "-i used with no filenames on the command line, "
4184 "reading from STDIN");
4188 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
4193 PERL_ARGS_ASSERT_INIT_POSTDUMP_SYMBOLS;
4195 PL_toptarget = newSV_type(SVt_PVIV);
4196 sv_setpvs(PL_toptarget, "");
4197 PL_bodytarget = newSV_type(SVt_PVIV);
4198 sv_setpvs(PL_bodytarget, "");
4199 PL_formtarget = PL_bodytarget;
4203 init_argv_symbols(argc,argv);
4205 if ((tmpgv = gv_fetchpvs("0", GV_ADD|GV_NOTQUAL, SVt_PV))) {
4206 sv_setpv(GvSV(tmpgv),PL_origfilename);
4208 if ((PL_envgv = gv_fetchpvs("ENV", GV_ADD|GV_NOTQUAL, SVt_PVHV))) {
4210 bool env_is_not_environ;
4211 GvMULTI_on(PL_envgv);
4212 hv = GvHVn(PL_envgv);
4213 hv_magic(hv, NULL, PERL_MAGIC_env);
4215 #ifdef USE_ENVIRON_ARRAY
4216 /* Note that if the supplied env parameter is actually a copy
4217 of the global environ then it may now point to free'd memory
4218 if the environment has been modified since. To avoid this
4219 problem we treat env==NULL as meaning 'use the default'
4223 env_is_not_environ = env != environ;
4224 if (env_is_not_environ
4225 # ifdef USE_ITHREADS
4226 && PL_curinterp == aTHX
4235 for (; *env; env++) {
4238 if (!(s = strchr(old_var,'=')) || s == old_var)
4241 #if defined(MSDOS) && !defined(DJGPP)
4243 (void)strupr(old_var);
4246 sv = newSVpv(s+1, 0);
4247 (void)hv_store(hv, old_var, s - old_var, sv, 0);
4248 if (env_is_not_environ)
4252 #endif /* USE_ENVIRON_ARRAY */
4253 #endif /* !PERL_MICRO */
4257 /* touch @F array to prevent spurious warnings 20020415 MJD */
4259 (void) get_av("main::F", GV_ADD | GV_ADDMULTI);
4264 S_init_perllib(pTHX)
4268 const char *perl5lib = NULL;
4271 #if defined(WIN32) && !defined(PERL_IS_MINIPERL)
4275 if (!TAINTING_get) {
4277 perl5lib = PerlEnv_getenv("PERL5LIB");
4279 * It isn't possible to delete an environment variable with
4280 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4281 * case we treat PERL5LIB as undefined if it has a zero-length value.
4283 #if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
4284 if (perl5lib && *perl5lib != '\0')
4288 incpush_use_sep(perl5lib, 0, INCPUSH_ADD_SUB_DIRS);
4290 s = PerlEnv_getenv("PERLLIB");
4292 incpush_use_sep(s, 0, 0);
4295 /* Treat PERL5?LIB as a possible search list logical name -- the
4296 * "natural" VMS idiom for a Unix path string. We allow each
4297 * element to be a set of |-separated directories for compatibility.
4301 if (my_trnlnm("PERL5LIB",buf,0))
4303 incpush_use_sep(buf, 0, INCPUSH_ADD_SUB_DIRS);
4304 } while (my_trnlnm("PERL5LIB",buf,++idx));
4306 while (my_trnlnm("PERLLIB",buf,idx++))
4307 incpush_use_sep(buf, 0, 0);
4312 #ifndef PERL_IS_MINIPERL
4313 /* miniperl gets just -I..., the split of $ENV{PERL5LIB}, and "." in @INC
4314 (and not the architecture specific directories from $ENV{PERL5LIB}) */
4316 /* Use the ~-expanded versions of APPLLIB (undocumented),
4317 SITEARCH, SITELIB, VENDORARCH, VENDORLIB, ARCHLIB and PRIVLIB
4320 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP),
4321 INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4325 /* sitearch is always relative to sitelib on Windows for
4326 * DLL-based path intuition to work correctly */
4327 # if !defined(WIN32)
4328 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITEARCH_EXP),
4329 INCPUSH_CAN_RELOCATE);
4335 /* this picks up sitearch as well */
4336 s = win32_get_sitelib(PERL_FS_VERSION, &len);
4338 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4340 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_EXP), INCPUSH_CAN_RELOCATE);
4344 #ifdef PERL_VENDORARCH_EXP
4345 /* vendorarch is always relative to vendorlib on Windows for
4346 * DLL-based path intuition to work correctly */
4347 # if !defined(WIN32)
4348 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORARCH_EXP),
4349 INCPUSH_CAN_RELOCATE);
4353 #ifdef PERL_VENDORLIB_EXP
4355 /* this picks up vendorarch as well */
4356 s = win32_get_vendorlib(PERL_FS_VERSION, &len);
4358 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4360 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_EXP),
4361 INCPUSH_CAN_RELOCATE);
4366 S_incpush_use_sep(aTHX_ STR_WITH_LEN(ARCHLIB_EXP), INCPUSH_CAN_RELOCATE);
4370 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
4374 s = win32_get_privlib(PERL_FS_VERSION, &len);
4376 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4379 S_incpush_use_sep(aTHX_ PRIVLIB_EXP, 0, INCPUSH_CAN_RELOCATE);
4381 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PRIVLIB_EXP), INCPUSH_CAN_RELOCATE);
4385 #ifdef PERL_OTHERLIBDIRS
4386 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS),
4387 INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_NOT_BASEDIR
4388 |INCPUSH_CAN_RELOCATE);
4391 if (!TAINTING_get) {
4394 * It isn't possible to delete an environment variable with
4395 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4396 * case we treat PERL5LIB as undefined if it has a zero-length value.
4398 #if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
4399 if (perl5lib && *perl5lib != '\0')
4403 incpush_use_sep(perl5lib, 0,
4404 INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
4406 /* Treat PERL5?LIB as a possible search list logical name -- the
4407 * "natural" VMS idiom for a Unix path string. We allow each
4408 * element to be a set of |-separated directories for compatibility.
4412 if (my_trnlnm("PERL5LIB",buf,0))
4414 incpush_use_sep(buf, 0,
4415 INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
4416 } while (my_trnlnm("PERL5LIB",buf,++idx));
4420 /* Use the ~-expanded versions of APPLLIB (undocumented),
4421 SITELIB and VENDORLIB for older versions
4424 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP), INCPUSH_ADD_OLD_VERS
4425 |INCPUSH_NOT_BASEDIR|INCPUSH_CAN_RELOCATE);
4428 #if defined(SITELIB_STEM) && defined(PERL_INC_VERSION_LIST)
4429 /* Search for version-specific dirs below here */
4430 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_STEM),
4431 INCPUSH_ADD_OLD_VERS|INCPUSH_CAN_RELOCATE);
4435 #if defined(PERL_VENDORLIB_STEM) && defined(PERL_INC_VERSION_LIST)
4436 /* Search for version-specific dirs below here */
4437 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_STEM),
4438 INCPUSH_ADD_OLD_VERS|INCPUSH_CAN_RELOCATE);
4441 #ifdef PERL_OTHERLIBDIRS
4442 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS),
4443 INCPUSH_ADD_OLD_VERS|INCPUSH_ADD_ARCHONLY_SUB_DIRS
4444 |INCPUSH_CAN_RELOCATE);
4446 #endif /* !PERL_IS_MINIPERL */
4449 S_incpush(aTHX_ STR_WITH_LEN("."), 0);
4452 #if defined(DOSISH) || defined(__SYMBIAN32__)
4453 # define PERLLIB_SEP ';'
4456 # define PERLLIB_SEP '|'
4458 # define PERLLIB_SEP ':'
4461 #ifndef PERLLIB_MANGLE
4462 # define PERLLIB_MANGLE(s,n) (s)
4465 #ifndef PERL_IS_MINIPERL
4466 /* Push a directory onto @INC if it exists.
4467 Generate a new SV if we do this, to save needing to copy the SV we push
4470 S_incpush_if_exists(pTHX_ AV *const av, SV *dir, SV *const stem)
4475 PERL_ARGS_ASSERT_INCPUSH_IF_EXISTS;
4477 if (PerlLIO_stat(SvPVX_const(dir), &tmpstatbuf) >= 0 &&
4478 S_ISDIR(tmpstatbuf.st_mode)) {
4480 dir = newSVsv(stem);
4482 /* Truncate dir back to stem. */
4483 SvCUR_set(dir, SvCUR(stem));
4490 S_mayberelocate(pTHX_ const char *const dir, STRLEN len, U32 flags)
4492 const U8 canrelocate = (U8)flags & INCPUSH_CAN_RELOCATE;
4495 PERL_ARGS_ASSERT_MAYBERELOCATE;
4499 /* I am not convinced that this is valid when PERLLIB_MANGLE is
4500 defined to so something (in os2/os2.c), but the code has been
4501 this way, ignoring any possible changed of length, since
4502 760ac839baf413929cd31cc32ffd6dba6b781a81 (5.003_02) so I'll leave
4504 libdir = newSVpvn(PERLLIB_MANGLE(dir, len), len);
4506 libdir = newSVpv(PERLLIB_MANGLE(dir, 0), 0);
4513 if ((unix = tounixspec_ts(SvPV(libdir,len),NULL)) != NULL) {
4515 while (unix[len-1] == '/') len--; /* Cosmetic */
4516 sv_usepvn(libdir,unix,len);
4519 PerlIO_printf(Perl_error_log,
4520 "Failed to unixify @INC element \"%s\"\n",
4521 SvPV_nolen_const(libdir));
4525 /* Do the if() outside the #ifdef to avoid warnings about an unused
4528 #ifdef PERL_RELOCATABLE_INC
4530 * Relocatable include entries are marked with a leading .../
4533 * 0: Remove that leading ".../"
4534 * 1: Remove trailing executable name (anything after the last '/')
4535 * from the perl path to give a perl prefix
4537 * While the @INC element starts "../" and the prefix ends with a real
4538 * directory (ie not . or ..) chop that real directory off the prefix
4539 * and the leading "../" from the @INC element. ie a logical "../"
4541 * Finally concatenate the prefix and the remainder of the @INC element
4542 * The intent is that /usr/local/bin/perl and .../../lib/perl5
4543 * generates /usr/local/lib/perl5
4545 const char *libpath = SvPVX(libdir);
4546 STRLEN libpath_len = SvCUR(libdir);
4547 if (libpath_len >= 4 && memEQ (libpath, ".../", 4)) {
4549 SV * const caret_X = get_sv("\030", 0);
4550 /* Going to use the SV just as a scratch buffer holding a C
4556 /* $^X is *the* source of taint if tainting is on, hence
4557 SvPOK() won't be true. */
4559 assert(SvPOKp(caret_X));
4560 prefix_sv = newSVpvn_flags(SvPVX(caret_X), SvCUR(caret_X),
4562 /* Firstly take off the leading .../
4563 If all else fail we'll do the paths relative to the current
4565 sv_chop(libdir, libpath + 4);
4566 /* Don't use SvPV as we're intentionally bypassing taining,
4567 mortal copies that the mg_get of tainting creates, and
4568 corruption that seems to come via the save stack.
4569 I guess that the save stack isn't correctly set up yet. */
4570 libpath = SvPVX(libdir);
4571 libpath_len = SvCUR(libdir);
4573 /* This would work more efficiently with memrchr, but as it's
4574 only a GNU extension we'd need to probe for it and
4575 implement our own. Not hard, but maybe not worth it? */
4577 prefix = SvPVX(prefix_sv);
4578 lastslash = strrchr(prefix, '/');
4580 /* First time in with the *lastslash = '\0' we just wipe off
4581 the trailing /perl from (say) /usr/foo/bin/perl
4585 while ((*lastslash = '\0'), /* Do that, come what may. */
4586 (libpath_len >= 3 && memEQ(libpath, "../", 3)
4587 && (lastslash = strrchr(prefix, '/')))) {
4588 if (lastslash[1] == '\0'
4589 || (lastslash[1] == '.'
4590 && (lastslash[2] == '/' /* ends "/." */
4591 || (lastslash[2] == '/'
4592 && lastslash[3] == '/' /* or "/.." */
4594 /* Prefix ends "/" or "/." or "/..", any of which
4595 are fishy, so don't do any more logical cleanup.
4599 /* Remove leading "../" from path */
4602 /* Next iteration round the loop removes the last
4603 directory name from prefix by writing a '\0' in
4604 the while clause. */
4606 /* prefix has been terminated with a '\0' to the correct
4607 length. libpath points somewhere into the libdir SV.
4608 We need to join the 2 with '/' and drop the result into
4610 tempsv = Perl_newSVpvf(aTHX_ "%s/%s", prefix, libpath);
4611 SvREFCNT_dec(libdir);
4612 /* And this is the new libdir. */
4615 (PerlProc_getuid() != PerlProc_geteuid() ||
4616 PerlProc_getgid() != PerlProc_getegid())) {
4617 /* Need to taint relocated paths if running set ID */
4618 SvTAINTED_on(libdir);
4621 SvREFCNT_dec(prefix_sv);
4629 S_incpush(pTHX_ const char *const dir, STRLEN len, U32 flags)
4632 #ifndef PERL_IS_MINIPERL
4633 const U8 using_sub_dirs
4634 = (U8)flags & (INCPUSH_ADD_VERSIONED_SUB_DIRS
4635 |INCPUSH_ADD_ARCHONLY_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
4636 const U8 add_versioned_sub_dirs
4637 = (U8)flags & INCPUSH_ADD_VERSIONED_SUB_DIRS;
4638 const U8 add_archonly_sub_dirs
4639 = (U8)flags & INCPUSH_ADD_ARCHONLY_SUB_DIRS;
4640 #ifdef PERL_INC_VERSION_LIST
4641 const U8 addoldvers = (U8)flags & INCPUSH_ADD_OLD_VERS;
4644 const U8 unshift = (U8)flags & INCPUSH_UNSHIFT;
4645 const U8 push_basedir = (flags & INCPUSH_NOT_BASEDIR) ? 0 : 1;
4646 AV *const inc = GvAVn(PL_incgv);
4648 PERL_ARGS_ASSERT_INCPUSH;
4651 /* Could remove this vestigial extra block, if we don't mind a lot of
4652 re-indenting diff noise. */
4654 SV *const libdir = mayberelocate(dir, len, flags);
4655 /* Change 20189146be79a0596543441fa369c6bf7f85103f, to fix RT#6665,
4656 arranged to unshift #! line -I onto the front of @INC. However,
4657 -I can add version and architecture specific libraries, and they
4658 need to go first. The old code assumed that it was always
4659 pushing. Hence to make it work, need to push the architecture
4660 (etc) libraries onto a temporary array, then "unshift" that onto
4661 the front of @INC. */
4662 #ifndef PERL_IS_MINIPERL
4663 AV *const av = (using_sub_dirs) ? (unshift ? newAV() : inc) : NULL;
4666 * BEFORE pushing libdir onto @INC we may first push version- and
4667 * archname-specific sub-directories.
4669 if (using_sub_dirs) {
4670 SV *subdir = newSVsv(libdir);
4671 #ifdef PERL_INC_VERSION_LIST
4672 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
4673 const char * const incverlist[] = { PERL_INC_VERSION_LIST };
4674 const char * const *incver;
4677 if (add_versioned_sub_dirs) {
4678 /* .../version/archname if -d .../version/archname */
4679 sv_catpvs(subdir, "/" PERL_FS_VERSION "/" ARCHNAME);
4680 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4682 /* .../version if -d .../version */
4683 sv_catpvs(subdir, "/" PERL_FS_VERSION);
4684 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4687 #ifdef PERL_INC_VERSION_LIST
4689 for (incver = incverlist; *incver; incver++) {
4690 /* .../xxx if -d .../xxx */
4691 Perl_sv_catpvf(aTHX_ subdir, "/%s", *incver);
4692 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4697 if (add_archonly_sub_dirs) {
4698 /* .../archname if -d .../archname */
4699 sv_catpvs(subdir, "/" ARCHNAME);
4700 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4704 assert (SvREFCNT(subdir) == 1);
4705 SvREFCNT_dec(subdir);
4707 #endif /* !PERL_IS_MINIPERL */
4708 /* finally add this lib directory at the end of @INC */
4710 #ifdef PERL_IS_MINIPERL
4711 const U32 extra = 0;
4713 U32 extra = av_len(av) + 1;
4715 av_unshift(inc, extra + push_basedir);
4717 av_store(inc, extra, libdir);
4718 #ifndef PERL_IS_MINIPERL
4720 /* av owns a reference, av_store() expects to be donated a
4721 reference, and av expects to be sane when it's cleared.
4722 If I wanted to be naughty and wrong, I could peek inside the
4723 implementation of av_clear(), realise that it uses
4724 SvREFCNT_dec() too, so av's array could be a run of NULLs,
4725 and so directly steal from it (with a memcpy() to inc, and
4726 then memset() to NULL them out. But people copy code from the
4727 core expecting it to be best practise, so let's use the API.
4728 Although studious readers will note that I'm not checking any
4730 av_store(inc, extra, SvREFCNT_inc(*av_fetch(av, extra, FALSE)));
4735 else if (push_basedir) {
4736 av_push(inc, libdir);
4739 if (!push_basedir) {
4740 assert (SvREFCNT(libdir) == 1);
4741 SvREFCNT_dec(libdir);
4747 S_incpush_use_sep(pTHX_ const char *p, STRLEN len, U32 flags)
4751 /* This logic has been broken out from S_incpush(). It may be possible to
4754 PERL_ARGS_ASSERT_INCPUSH_USE_SEP;
4756 /* perl compiled with -DPERL_RELOCATABLE_INCPUSH will ignore the len
4757 * argument to incpush_use_sep. This allows creation of relocatable
4758 * Perl distributions that patch the binary at install time. Those
4759 * distributions will have to provide their own relocation tools; this
4760 * is not a feature otherwise supported by core Perl.
4762 #ifndef PERL_RELOCATABLE_INCPUSH
4769 /* Break at all separators */
4770 while ((s = (const char*)memchr(p, PERLLIB_SEP, end - p))) {
4772 /* skip any consecutive separators */
4774 /* Uncomment the next line for PATH semantics */
4775 /* But you'll need to write tests */
4776 /* av_push(GvAVn(PL_incgv), newSVpvs(".")); */
4778 incpush(p, (STRLEN)(s - p), flags);
4783 incpush(p, (STRLEN)(end - p), flags);
4788 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
4792 volatile const line_t oldline = PL_curcop ? CopLINE(PL_curcop) : 0;
4798 PERL_ARGS_ASSERT_CALL_LIST;
4800 while (av_len(paramList) >= 0) {
4801 cv = MUTABLE_CV(av_shift(paramList));
4803 if (paramList == PL_beginav) {
4804 /* save PL_beginav for compiler */
4805 Perl_av_create_and_push(aTHX_ &PL_beginav_save, MUTABLE_SV(cv));
4807 else if (paramList == PL_checkav) {
4808 /* save PL_checkav for compiler */
4809 Perl_av_create_and_push(aTHX_ &PL_checkav_save, MUTABLE_SV(cv));
4811 else if (paramList == PL_unitcheckav) {
4812 /* save PL_unitcheckav for compiler */
4813 Perl_av_create_and_push(aTHX_ &PL_unitcheckav_save, MUTABLE_SV(cv));
4824 PL_madskills |= 16384;
4829 PL_madskills &= ~16384;
4832 (void)SvPV_const(atsv, len);
4834 PL_curcop = &PL_compiling;
4835 CopLINE_set(PL_curcop, oldline);
4836 if (paramList == PL_beginav)
4837 sv_catpvs(atsv, "BEGIN failed--compilation aborted");
4839 Perl_sv_catpvf(aTHX_ atsv,
4840 "%s failed--call queue aborted",
4841 paramList == PL_checkav ? "CHECK"
4842 : paramList == PL_initav ? "INIT"
4843 : paramList == PL_unitcheckav ? "UNITCHECK"
4845 while (PL_scopestack_ix > oldscope)
4848 Perl_croak(aTHX_ "%"SVf"", SVfARG(atsv));
4855 /* my_exit() was called */
4856 while (PL_scopestack_ix > oldscope)
4859 SET_CURSTASH(PL_defstash);
4860 PL_curcop = &PL_compiling;
4861 CopLINE_set(PL_curcop, oldline);
4864 assert(0); /* NOTREACHED */
4867 PL_curcop = &PL_compiling;
4868 CopLINE_set(PL_curcop, oldline);
4871 PerlIO_printf(Perl_error_log, "panic: restartop in call_list\n");
4880 Perl_my_exit(pTHX_ U32 status)
4891 STATUS_EXIT_SET(status);
4898 Perl_my_failure_exit(pTHX)
4902 /* We have been called to fall on our sword. The desired exit code
4903 * should be already set in STATUS_UNIX, but could be shifted over
4904 * by 8 bits. STATUS_UNIX_EXIT_SET will handle the cases where a
4907 * If an error code has not been set, then force the issue.
4909 if (MY_POSIX_EXIT) {
4911 /* According to the die_exit.t tests, if errno is non-zero */
4912 /* It should be used for the error status. */
4914 if (errno == EVMSERR) {
4915 STATUS_NATIVE = vaxc$errno;
4918 /* According to die_exit.t tests, if the child_exit code is */
4919 /* also zero, then we need to exit with a code of 255 */
4920 if ((errno != 0) && (errno < 256))
4921 STATUS_UNIX_EXIT_SET(errno);
4922 else if (STATUS_UNIX < 255) {
4923 STATUS_UNIX_EXIT_SET(255);
4928 /* The exit code could have been set by $? or vmsish which
4929 * means that it may not have fatal set. So convert
4930 * success/warning codes to fatal with out changing
4931 * the POSIX status code. The severity makes VMS native
4932 * status handling work, while UNIX mode programs use the
4933 * the POSIX exit codes.
4935 if ((STATUS_NATIVE & (STS$K_SEVERE|STS$K_ERROR)) == 0) {
4936 STATUS_NATIVE &= STS$M_COND_ID;
4937 STATUS_NATIVE |= STS$K_ERROR | STS$M_INHIB_MSG;
4941 /* Traditionally Perl on VMS always expects a Fatal Error. */
4942 if (vaxc$errno & 1) {
4944 /* So force success status to failure */
4945 if (STATUS_NATIVE & 1)
4950 STATUS_UNIX = EINTR; /* In case something cares */
4955 STATUS_NATIVE = vaxc$errno; /* Should already be this */
4957 /* Encode the severity code */
4958 severity = STATUS_NATIVE & STS$M_SEVERITY;
4959 STATUS_UNIX = (severity ? severity : 1) << 8;
4961 /* Perl expects this to be a fatal error */
4962 if (severity != STS$K_SEVERE)
4971 STATUS_UNIX_SET(errno);
4973 exitstatus = STATUS_UNIX >> 8;
4974 if (exitstatus & 255)
4975 STATUS_UNIX_SET(exitstatus);
4977 STATUS_UNIX_SET(255);
4984 S_my_exit_jump(pTHX)
4989 SvREFCNT_dec(PL_e_script);
4993 POPSTACK_TO(PL_mainstack);
5001 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen)
5004 const char * const p = SvPVX_const(PL_e_script);
5005 const char *nl = strchr(p, '\n');
5007 PERL_UNUSED_ARG(idx);
5008 PERL_UNUSED_ARG(maxlen);
5010 nl = (nl) ? nl+1 : SvEND(PL_e_script);
5012 filter_del(read_e_script);
5015 sv_catpvn(buf_sv, p, nl-p);
5016 sv_chop(PL_e_script, nl);
5022 * c-indentation-style: bsd
5024 * indent-tabs-mode: nil
5027 * ex: set ts=8 sts=4 sw=4 et: