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;
851 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
852 PL_stashcache = NULL;
854 /* loosen bonds of global variables */
856 /* XXX can PL_parser still be non-null here? */
857 if(PL_parser && PL_parser->rsfp) {
858 (void)PerlIO_close(PL_parser->rsfp);
859 PL_parser->rsfp = NULL;
863 Safefree(PL_splitstr);
873 PL_doswitches = FALSE;
874 PL_dowarn = G_WARN_OFF;
875 #ifdef PERL_SAWAMPERSAND
876 PL_sawampersand = 0; /* must save all match strings */
880 Safefree(PL_inplace);
882 SvREFCNT_dec(PL_patchlevel);
883 SvREFCNT_dec(PL_apiversion);
886 SvREFCNT_dec(PL_e_script);
892 /* magical thingies */
894 SvREFCNT_dec(PL_ofsgv); /* *, */
897 SvREFCNT_dec(PL_ors_sv); /* $\ */
900 SvREFCNT_dec(PL_rs); /* $/ */
903 Safefree(PL_osname); /* $^O */
906 SvREFCNT_dec(PL_statname);
910 /* defgv, aka *_ should be taken care of elsewhere */
913 Safefree(PL_efloatbuf);
917 /* startup and shutdown function lists */
918 SvREFCNT_dec(PL_beginav);
919 SvREFCNT_dec(PL_beginav_save);
920 SvREFCNT_dec(PL_endav);
921 SvREFCNT_dec(PL_checkav);
922 SvREFCNT_dec(PL_checkav_save);
923 SvREFCNT_dec(PL_unitcheckav);
924 SvREFCNT_dec(PL_unitcheckav_save);
925 SvREFCNT_dec(PL_initav);
927 PL_beginav_save = NULL;
930 PL_checkav_save = NULL;
931 PL_unitcheckav = NULL;
932 PL_unitcheckav_save = NULL;
935 /* shortcuts just get cleared */
944 PL_last_in_gv = NULL;
956 SvREFCNT_dec(PL_argvout_stack);
957 PL_argvout_stack = NULL;
959 SvREFCNT_dec(PL_modglobal);
961 SvREFCNT_dec(PL_preambleav);
962 PL_preambleav = NULL;
963 SvREFCNT_dec(PL_subname);
965 #ifdef PERL_USES_PL_PIDSTATUS
966 SvREFCNT_dec(PL_pidstatus);
969 SvREFCNT_dec(PL_toptarget);
971 SvREFCNT_dec(PL_bodytarget);
972 PL_bodytarget = NULL;
973 PL_formtarget = NULL;
975 /* free locale stuff */
976 #ifdef USE_LOCALE_COLLATE
977 Safefree(PL_collation_name);
978 PL_collation_name = NULL;
981 #ifdef USE_LOCALE_NUMERIC
982 Safefree(PL_numeric_name);
983 PL_numeric_name = NULL;
984 SvREFCNT_dec(PL_numeric_radix_sv);
985 PL_numeric_radix_sv = NULL;
988 /* clear utf8 character classes */
989 SvREFCNT_dec(PL_utf8_alnum);
990 SvREFCNT_dec(PL_utf8_alpha);
991 SvREFCNT_dec(PL_utf8_graph);
992 SvREFCNT_dec(PL_utf8_digit);
993 SvREFCNT_dec(PL_utf8_upper);
994 SvREFCNT_dec(PL_utf8_lower);
995 SvREFCNT_dec(PL_utf8_print);
996 SvREFCNT_dec(PL_utf8_punct);
997 SvREFCNT_dec(PL_utf8_mark);
998 SvREFCNT_dec(PL_utf8_toupper);
999 SvREFCNT_dec(PL_utf8_totitle);
1000 SvREFCNT_dec(PL_utf8_tolower);
1001 SvREFCNT_dec(PL_utf8_tofold);
1002 SvREFCNT_dec(PL_utf8_idstart);
1003 SvREFCNT_dec(PL_utf8_idcont);
1004 SvREFCNT_dec(PL_utf8_foldclosures);
1005 PL_utf8_alnum = NULL;
1006 PL_utf8_alpha = NULL;
1007 PL_utf8_graph = NULL;
1008 PL_utf8_digit = NULL;
1009 PL_utf8_upper = NULL;
1010 PL_utf8_lower = NULL;
1011 PL_utf8_print = NULL;
1012 PL_utf8_punct = NULL;
1013 PL_utf8_mark = NULL;
1014 PL_utf8_toupper = NULL;
1015 PL_utf8_totitle = NULL;
1016 PL_utf8_tolower = NULL;
1017 PL_utf8_tofold = NULL;
1018 PL_utf8_idstart = NULL;
1019 PL_utf8_idcont = NULL;
1020 PL_utf8_foldclosures = NULL;
1022 if (!specialWARN(PL_compiling.cop_warnings))
1023 PerlMemShared_free(PL_compiling.cop_warnings);
1024 PL_compiling.cop_warnings = NULL;
1025 cophh_free(CopHINTHASH_get(&PL_compiling));
1026 CopHINTHASH_set(&PL_compiling, cophh_new_empty());
1027 CopFILE_free(&PL_compiling);
1029 /* Prepare to destruct main symbol table. */
1032 /* break ref loop *:: <=> %:: */
1033 (void)hv_delete(hv, "main::", 6, G_DISCARD);
1036 SvREFCNT_dec(PL_curstname);
1037 PL_curstname = NULL;
1039 /* clear queued errors */
1040 SvREFCNT_dec(PL_errors);
1043 SvREFCNT_dec(PL_isarev);
1046 if (destruct_level >= 2) {
1047 if (PL_scopestack_ix != 0)
1048 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1049 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1050 (long)PL_scopestack_ix);
1051 if (PL_savestack_ix != 0)
1052 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1053 "Unbalanced saves: %ld more saves than restores\n",
1054 (long)PL_savestack_ix);
1055 if (PL_tmps_floor != -1)
1056 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1057 (long)PL_tmps_floor + 1);
1058 if (cxstack_ix != -1)
1059 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1060 (long)cxstack_ix + 1);
1064 SvREFCNT_dec(PL_regex_padav);
1065 PL_regex_padav = NULL;
1066 PL_regex_pad = NULL;
1069 #ifdef PERL_IMPLICIT_CONTEXT
1070 /* the entries in this list are allocated via SV PVX's, so get freed
1071 * in sv_clean_all */
1072 Safefree(PL_my_cxt_list);
1075 /* Now absolutely destruct everything, somehow or other, loops or no. */
1077 /* the 2 is for PL_fdpid and PL_strtab */
1078 while (sv_clean_all() > 2)
1082 Safefree(PL_stashpad); /* must come after sv_clean_all */
1085 AvREAL_off(PL_fdpid); /* no surviving entries */
1086 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
1089 #ifdef HAVE_INTERP_INTERN
1093 /* Destruct the global string table. */
1095 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1096 * so that sv_free() won't fail on them.
1097 * Now that the global string table is using a single hunk of memory
1098 * for both HE and HEK, we either need to explicitly unshare it the
1099 * correct way, or actually free things here.
1102 const I32 max = HvMAX(PL_strtab);
1103 HE * const * const array = HvARRAY(PL_strtab);
1104 HE *hent = array[0];
1107 if (hent && ckWARN_d(WARN_INTERNAL)) {
1108 HE * const next = HeNEXT(hent);
1109 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
1110 "Unbalanced string table refcount: (%ld) for \"%s\"",
1111 (long)hent->he_valu.hent_refcount, HeKEY(hent));
1118 hent = array[riter];
1123 HvARRAY(PL_strtab) = 0;
1124 HvTOTALKEYS(PL_strtab) = 0;
1126 SvREFCNT_dec(PL_strtab);
1129 /* free the pointer tables used for cloning */
1130 ptr_table_free(PL_ptr_table);
1131 PL_ptr_table = (PTR_TBL_t*)NULL;
1134 /* free special SVs */
1136 SvREFCNT(&PL_sv_yes) = 0;
1137 sv_clear(&PL_sv_yes);
1138 SvANY(&PL_sv_yes) = NULL;
1139 SvFLAGS(&PL_sv_yes) = 0;
1141 SvREFCNT(&PL_sv_no) = 0;
1142 sv_clear(&PL_sv_no);
1143 SvANY(&PL_sv_no) = NULL;
1144 SvFLAGS(&PL_sv_no) = 0;
1148 for (i=0; i<=2; i++) {
1149 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1150 sv_clear(PERL_DEBUG_PAD(i));
1151 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1152 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1156 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
1157 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
1159 #ifdef DEBUG_LEAKING_SCALARS
1160 if (PL_sv_count != 0) {
1165 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
1166 svend = &sva[SvREFCNT(sva)];
1167 for (sv = sva + 1; sv < svend; ++sv) {
1168 if (SvTYPE(sv) != (svtype)SVTYPEMASK) {
1169 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
1171 " refcnt=%"UVuf pTHX__FORMAT "\n"
1172 "\tallocated at %s:%d %s %s (parent 0x%"UVxf");"
1174 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1176 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1178 sv->sv_debug_inpad ? "for" : "by",
1179 sv->sv_debug_optype ?
1180 PL_op_name[sv->sv_debug_optype]: "(none)",
1181 PTR2UV(sv->sv_debug_parent),
1184 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1185 Perl_dump_sv_child(aTHX_ sv);
1191 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1195 /* Wait for up to 4 seconds for child to terminate.
1196 This seems to be the least effort way of timing out on reaping
1198 struct timeval waitfor = {4, 0};
1199 int sock = PL_dumper_fd;
1203 FD_SET(sock, &rset);
1204 select(sock + 1, &rset, NULL, NULL, &waitfor);
1205 waitpid(child, &status, WNOHANG);
1210 #ifdef DEBUG_LEAKING_SCALARS_ABORT
1216 #if defined(PERLIO_LAYERS)
1217 /* No more IO - including error messages ! */
1218 PerlIO_cleanup(aTHX);
1221 /* sv_undef needs to stay immortal until after PerlIO_cleanup
1222 as currently layers use it rather than NULL as a marker
1223 for no arg - and will try and SvREFCNT_dec it.
1225 SvREFCNT(&PL_sv_undef) = 0;
1226 SvREADONLY_off(&PL_sv_undef);
1228 Safefree(PL_origfilename);
1229 PL_origfilename = NULL;
1230 Safefree(PL_reg_curpm);
1231 Safefree(PL_reg_poscache);
1232 free_tied_hv_pool();
1233 Safefree(PL_op_mask);
1234 Safefree(PL_psig_name);
1235 PL_psig_name = (SV**)NULL;
1236 PL_psig_ptr = (SV**)NULL;
1238 /* We need to NULL PL_psig_pend first, so that
1239 signal handlers know not to use it */
1240 int *psig_save = PL_psig_pend;
1241 PL_psig_pend = (int*)NULL;
1242 Safefree(psig_save);
1245 TAINTING_set(FALSE);
1246 TAINT_WARN_set(FALSE);
1247 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
1250 DEBUG_P(debprofdump());
1252 #ifdef USE_REENTRANT_API
1253 Perl_reentrant_free(aTHX);
1258 while (PL_regmatch_slab) {
1259 regmatch_slab *s = PL_regmatch_slab;
1260 PL_regmatch_slab = PL_regmatch_slab->next;
1264 /* As the absolutely last thing, free the non-arena SV for mess() */
1267 /* we know that type == SVt_PVMG */
1269 /* it could have accumulated taint magic */
1272 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1273 moremagic = mg->mg_moremagic;
1274 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1276 Safefree(mg->mg_ptr);
1280 /* we know that type >= SVt_PV */
1281 SvPV_free(PL_mess_sv);
1282 Safefree(SvANY(PL_mess_sv));
1283 Safefree(PL_mess_sv);
1290 =for apidoc perl_free
1292 Releases a Perl interpreter. See L<perlembed>.
1302 PERL_ARGS_ASSERT_PERL_FREE;
1304 if (PL_veto_cleanup)
1307 #ifdef PERL_TRACK_MEMPOOL
1310 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1311 * value as we're probably hunting memory leaks then
1313 if (PL_perl_destruct_level == 0) {
1314 const U32 old_debug = PL_debug;
1315 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1316 thread at thread exit. */
1318 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1319 "free this thread's memory\n");
1320 PL_debug &= ~ DEBUG_m_FLAG;
1322 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
1323 safesysfree(sTHX + (char *)(aTHXx->Imemory_debug_header.next));
1324 PL_debug = old_debug;
1329 #if defined(WIN32) || defined(NETWARE)
1330 # if defined(PERL_IMPLICIT_SYS)
1333 void *host = nw_internal_host;
1335 void *host = w32_internal_host;
1337 PerlMem_free(aTHXx);
1339 nw_delete_internal_host(host);
1341 win32_delete_internal_host(host);
1345 PerlMem_free(aTHXx);
1348 PerlMem_free(aTHXx);
1352 #if defined(USE_ITHREADS)
1353 /* provide destructors to clean up the thread key when libperl is unloaded */
1354 #ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1356 #if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
1357 #pragma fini "perl_fini"
1358 #elif defined(__sun) && !defined(__GNUC__)
1359 #pragma fini (perl_fini)
1363 #if defined(__GNUC__)
1364 __attribute__((destructor))
1369 if (PL_curinterp && !PL_veto_cleanup)
1374 #endif /* THREADS */
1377 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
1380 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1381 PL_exitlist[PL_exitlistlen].fn = fn;
1382 PL_exitlist[PL_exitlistlen].ptr = ptr;
1387 S_set_caret_X(pTHX) {
1389 GV* tmpgv = gv_fetchpvs("\030", GV_ADD|GV_NOTQUAL, SVt_PV); /* $^X */
1391 SV *const caret_x = GvSV(tmpgv);
1393 sv_setpv(caret_x, os2_execname(aTHX));
1395 # ifdef USE_KERN_PROC_PATHNAME
1400 mib[2] = KERN_PROC_PATHNAME;
1403 if (sysctl(mib, 4, NULL, &size, NULL, 0) == 0
1404 && size > 0 && size < MAXPATHLEN * MAXPATHLEN) {
1405 sv_grow(caret_x, size);
1407 if (sysctl(mib, 4, SvPVX(caret_x), &size, NULL, 0) == 0
1409 SvPOK_only(caret_x);
1410 SvCUR_set(caret_x, size - 1);
1415 # elif defined(USE_NSGETEXECUTABLEPATH)
1417 uint32_t size = sizeof(buf);
1419 _NSGetExecutablePath(buf, &size);
1420 if (size < MAXPATHLEN * MAXPATHLEN) {
1421 sv_grow(caret_x, size);
1422 if (_NSGetExecutablePath(SvPVX(caret_x), &size) == 0) {
1423 char *const tidied = realpath(SvPVX(caret_x), NULL);
1425 sv_setpv(caret_x, tidied);
1428 SvPOK_only(caret_x);
1429 SvCUR_set(caret_x, size);
1434 # elif defined(HAS_PROCSELFEXE)
1435 char buf[MAXPATHLEN];
1436 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1438 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1439 includes a spurious NUL which will cause $^X to fail in system
1440 or backticks (this will prevent extensions from being built and
1441 many tests from working). readlink is not meant to add a NUL.
1442 Normal readlink works fine.
1444 if (len > 0 && buf[len-1] == '\0') {
1448 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1449 returning the text "unknown" from the readlink rather than the path
1450 to the executable (or returning an error from the readlink). Any
1451 valid path has a '/' in it somewhere, so use that to validate the
1452 result. See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1454 if (len > 0 && memchr(buf, '/', len)) {
1455 sv_setpvn(caret_x, buf, len);
1459 /* Fallback to this: */
1460 sv_setpv(caret_x, PL_origargv[0]);
1466 =for apidoc perl_parse
1468 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1473 #define SET_CURSTASH(newstash) \
1474 if (PL_curstash != newstash) { \
1475 SvREFCNT_dec(PL_curstash); \
1476 PL_curstash = (HV *)SvREFCNT_inc(newstash); \
1480 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
1487 PERL_ARGS_ASSERT_PERL_PARSE;
1488 #ifndef MULTIPLICITY
1489 PERL_UNUSED_ARG(my_perl);
1491 #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) || defined(USE_HASH_SEED_DEBUG)
1493 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
1495 if (s && (atoi(s) == 1)) {
1496 unsigned char *seed= PERL_HASH_SEED;
1497 unsigned char *seed_end= PERL_HASH_SEED + PERL_HASH_SEED_BYTES;
1498 PerlIO_printf(Perl_debug_log, "HASH_FUNCTION = %s HASH_SEED = 0x", PERL_HASH_FUNC);
1499 while (seed < seed_end) {
1500 PerlIO_printf(Perl_debug_log, "%02x", *seed++);
1502 PerlIO_printf(Perl_debug_log, "\n");
1505 #endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1509 if (PL_origalen != 0) {
1510 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1513 /* Set PL_origalen be the sum of the contiguous argv[]
1514 * elements plus the size of the env in case that it is
1515 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
1516 * as the maximum modifiable length of $0. In the worst case
1517 * the area we are able to modify is limited to the size of
1518 * the original argv[0]. (See below for 'contiguous', though.)
1520 const char *s = NULL;
1523 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
1524 /* Do the mask check only if the args seem like aligned. */
1526 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1528 /* See if all the arguments are contiguous in memory. Note
1529 * that 'contiguous' is a loose term because some platforms
1530 * align the argv[] and the envp[]. If the arguments look
1531 * like non-aligned, assume that they are 'strictly' or
1532 * 'traditionally' contiguous. If the arguments look like
1533 * aligned, we just check that they are within aligned
1534 * PTRSIZE bytes. As long as no system has something bizarre
1535 * like the argv[] interleaved with some other data, we are
1536 * fine. (Did I just evoke Murphy's Law?) --jhi */
1537 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1539 for (i = 1; i < PL_origargc; i++) {
1540 if ((PL_origargv[i] == s + 1
1542 || PL_origargv[i] == s + 2
1547 (PL_origargv[i] > s &&
1549 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1560 #ifndef PERL_USE_SAFE_PUTENV
1561 /* Can we grab env area too to be used as the area for $0? */
1562 if (s && PL_origenviron && !PL_use_safe_putenv) {
1563 if ((PL_origenviron[0] == s + 1)
1566 (PL_origenviron[0] > s &&
1567 PL_origenviron[0] <=
1568 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1571 #ifndef OS2 /* ENVIRON is read by the kernel too. */
1572 s = PL_origenviron[0];
1575 my_setenv("NoNe SuCh", NULL);
1576 /* Force copy of environment. */
1577 for (i = 1; PL_origenviron[i]; i++) {
1578 if (PL_origenviron[i] == s + 1
1581 (PL_origenviron[i] > s &&
1582 PL_origenviron[i] <=
1583 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1586 s = PL_origenviron[i];
1594 #endif /* !defined(PERL_USE_SAFE_PUTENV) */
1596 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
1601 /* Come here if running an undumped a.out. */
1603 PL_origfilename = savepv(argv[0]);
1604 PL_do_undump = FALSE;
1605 cxstack_ix = -1; /* start label stack again */
1607 assert (!TAINT_get);
1609 S_set_caret_X(aTHX);
1611 init_postdump_symbols(argc,argv,env);
1616 op_free(PL_main_root);
1617 PL_main_root = NULL;
1619 PL_main_start = NULL;
1620 SvREFCNT_dec(PL_main_cv);
1624 oldscope = PL_scopestack_ix;
1625 PL_dowarn = G_WARN_OFF;
1630 parse_body(env,xsinit);
1631 if (PL_unitcheckav) {
1632 call_list(oldscope, PL_unitcheckav);
1635 PERL_SET_PHASE(PERL_PHASE_CHECK);
1636 call_list(oldscope, PL_checkav);
1644 /* my_exit() was called */
1645 while (PL_scopestack_ix > oldscope)
1648 SET_CURSTASH(PL_defstash);
1649 if (PL_unitcheckav) {
1650 call_list(oldscope, PL_unitcheckav);
1653 PERL_SET_PHASE(PERL_PHASE_CHECK);
1654 call_list(oldscope, PL_checkav);
1659 PerlIO_printf(Perl_error_log, "panic: top_env\n");
1667 /* This needs to stay in perl.c, as perl.c is compiled with different flags for
1668 miniperl, and we need to see those flags reflected in the values here. */
1670 /* What this returns is subject to change. Use the public interface in Config.
1673 S_Internals_V(pTHX_ CV *cv)
1676 #ifdef LOCAL_PATCH_COUNT
1677 const int local_patch_count = LOCAL_PATCH_COUNT;
1679 const int local_patch_count = 0;
1681 const int entries = 3 + local_patch_count;
1683 static const char non_bincompat_options[] =
1690 # ifdef PERL_DISABLE_PMC
1693 # ifdef PERL_DONT_CREATE_GVSV
1694 " PERL_DONT_CREATE_GVSV"
1696 # ifdef PERL_EXTERNAL_GLOB
1697 " PERL_EXTERNAL_GLOB"
1699 # ifdef PERL_IS_MINIPERL
1702 # ifdef PERL_MALLOC_WRAP
1705 # ifdef PERL_MEM_LOG
1708 # ifdef PERL_MEM_LOG_NOIMPL
1709 " PERL_MEM_LOG_NOIMPL"
1711 # ifdef PERL_PRESERVE_IVUV
1712 " PERL_PRESERVE_IVUV"
1714 # ifdef PERL_RELOCATABLE_INCPUSH
1715 " PERL_RELOCATABLE_INCPUSH"
1717 # ifdef PERL_USE_DEVEL
1720 # ifdef PERL_USE_SAFE_PUTENV
1721 " PERL_USE_SAFE_PUTENV"
1723 # ifdef UNLINK_ALL_VERSIONS
1724 " UNLINK_ALL_VERSIONS"
1726 # ifdef USE_ATTRIBUTES_FOR_PERLIO
1727 " USE_ATTRIBUTES_FOR_PERLIO"
1729 # ifdef USE_FAST_STDIO
1735 # ifdef USE_LOCALE_CTYPE
1738 # ifdef USE_PERL_ATOF
1741 # ifdef USE_SITECUSTOMIZE
1742 " USE_SITECUSTOMIZE"
1745 PERL_UNUSED_ARG(cv);
1746 PERL_UNUSED_ARG(items);
1748 EXTEND(SP, entries);
1750 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1751 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1752 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1756 PUSHs(Perl_newSVpvn_flags(aTHX_
1757 STR_WITH_LEN("Compiled at " __DATE__ " " __TIME__),
1760 PUSHs(Perl_newSVpvn_flags(aTHX_ STR_WITH_LEN("Compiled on " __DATE__),
1764 PUSHs(&PL_sv_undef);
1767 for (i = 1; i <= local_patch_count; i++) {
1768 /* This will be an undef, if PL_localpatches[i] is NULL. */
1769 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1775 #define INCPUSH_UNSHIFT 0x01
1776 #define INCPUSH_ADD_OLD_VERS 0x02
1777 #define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1778 #define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1779 #define INCPUSH_NOT_BASEDIR 0x10
1780 #define INCPUSH_CAN_RELOCATE 0x20
1781 #define INCPUSH_ADD_SUB_DIRS \
1782 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
1785 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
1789 int argc = PL_origargc;
1790 char **argv = PL_origargv;
1791 const char *scriptname = NULL;
1792 VOL bool dosearch = FALSE;
1794 bool doextract = FALSE;
1795 const char *cddir = NULL;
1796 #ifdef USE_SITECUSTOMIZE
1797 bool minus_f = FALSE;
1799 SV *linestr_sv = NULL;
1800 bool add_read_e_script = FALSE;
1801 U32 lex_start_flags = 0;
1803 PERL_SET_PHASE(PERL_PHASE_START);
1809 for (argc--,argv++; argc > 0; argc--,argv++) {
1810 if (argv[0][0] != '-' || !argv[0][1])
1816 #ifndef PERL_STRICT_CR
1840 if ((s = moreswitches(s)))
1845 #if SILENT_NO_TAINT_SUPPORT
1846 /* silently ignore */
1847 #elif NO_TAINT_SUPPORT
1848 Perl_croak("This perl was compiled without taint support. "
1849 "Cowardly refusing to run with -t or -T flags");
1851 CHECK_MALLOC_TOO_LATE_FOR('t');
1852 if( !TAINTING_get ) {
1853 TAINT_WARN_set(TRUE);
1860 #if SILENT_NO_TAINT_SUPPORT
1861 /* silently ignore */
1862 #elif NO_TAINT_SUPPORT
1863 Perl_croak("This perl was compiled without taint support. "
1864 "Cowardly refusing to run with -t or -T flags");
1866 CHECK_MALLOC_TOO_LATE_FOR('T');
1868 TAINT_WARN_set(FALSE);
1877 forbid_setid('e', FALSE);
1879 PL_e_script = newSVpvs("");
1880 add_read_e_script = TRUE;
1883 sv_catpv(PL_e_script, s);
1885 sv_catpv(PL_e_script, argv[1]);
1889 Perl_croak(aTHX_ "No code specified for -%c", c);
1890 sv_catpvs(PL_e_script, "\n");
1894 #ifdef USE_SITECUSTOMIZE
1900 case 'I': /* -I handled both here and in moreswitches() */
1901 forbid_setid('I', FALSE);
1902 if (!*++s && (s=argv[1]) != NULL) {
1906 STRLEN len = strlen(s);
1907 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
1910 Perl_croak(aTHX_ "No directory specified for -I");
1913 forbid_setid('S', FALSE);
1922 opts_prog = newSVpvs("use Config; Config::_V()");
1926 opts_prog = Perl_newSVpvf(aTHX_
1927 "use Config; Config::config_vars(qw%c%s%c)",
1931 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
1932 /* don't look for script or read stdin */
1933 scriptname = BIT_BUCKET;
1945 if (!*++s || isSPACE(*s)) {
1949 /* catch use of gnu style long options.
1950 Both of these exit immediately. */
1951 if (strEQ(s, "version"))
1953 if (strEQ(s, "help"))
1958 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1969 #ifndef SECURE_INTERNAL_GETENV
1972 (s = PerlEnv_getenv("PERL5OPT")))
1976 if (*s == '-' && *(s+1) == 'T') {
1977 #if SILENT_NO_TAINT_SUPPORT
1978 /* silently ignore */
1979 #elif NO_TAINT_SUPPORT
1980 Perl_croak("This perl was compiled without taint support. "
1981 "Cowardly refusing to run with -t or -T flags");
1983 CHECK_MALLOC_TOO_LATE_FOR('T');
1985 TAINT_WARN_set(FALSE);
1989 char *popt_copy = NULL;
2002 if (!strchr("CDIMUdmtwW", *s))
2003 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
2007 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
2008 s = popt_copy + (s - d);
2016 #if SILENT_NO_TAINT_SUPPORT
2017 /* silently ignore */
2018 #elif NO_TAINT_SUPPORT
2019 Perl_croak("This perl was compiled without taint support. "
2020 "Cowardly refusing to run with -t or -T flags");
2022 if( !TAINTING_get) {
2023 TAINT_WARN_set(TRUE);
2035 /* Set $^X early so that it can be used for relocatable paths in @INC */
2036 /* and for SITELIB_EXP in USE_SITECUSTOMIZE */
2037 assert (!TAINT_get);
2039 S_set_caret_X(aTHX);
2042 #if defined(USE_SITECUSTOMIZE)
2044 /* The games with local $! are to avoid setting errno if there is no
2045 sitecustomize script. "q%c...%c", 0, ..., 0 becomes "q\0...\0",
2046 ie a q() operator with a NUL byte as a the delimiter. This avoids
2047 problems with pathnames containing (say) ' */
2048 # ifdef PERL_IS_MINIPERL
2049 AV *const inc = GvAV(PL_incgv);
2050 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
2053 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2055 "BEGIN { do {local $!; -f q%c%"SVf"/buildcustomize.pl%c} && do q%c%"SVf"/buildcustomize.pl%c }",
2060 /* SITELIB_EXP is a function call on Win32. */
2061 const char *const raw_sitelib = SITELIB_EXP;
2063 /* process .../.. if PERL_RELOCATABLE_INC is defined */
2064 SV *sitelib_sv = mayberelocate(raw_sitelib, strlen(raw_sitelib),
2065 INCPUSH_CAN_RELOCATE);
2066 const char *const sitelib = SvPVX(sitelib_sv);
2067 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2069 "BEGIN { do {local $!; -f q%c%s/sitecustomize.pl%c} && do q%c%s/sitecustomize.pl%c }",
2072 assert (SvREFCNT(sitelib_sv) == 1);
2073 SvREFCNT_dec(sitelib_sv);
2080 scriptname = argv[0];
2083 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2085 else if (scriptname == NULL) {
2087 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
2093 assert (!TAINT_get);
2097 bool suidscript = FALSE;
2099 rsfp = open_script(scriptname, dosearch, &suidscript);
2101 rsfp = PerlIO_stdin();
2102 lex_start_flags = LEX_DONT_CLOSE_RSFP;
2105 validate_suid(rsfp);
2108 # if defined(SIGCHLD) || defined(SIGCLD)
2111 # define SIGCHLD SIGCLD
2113 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2114 if (sigstate == (Sighandler_t) SIG_IGN) {
2115 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2116 "Can't ignore signal CHLD, forcing to default");
2117 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2125 /* This will croak if suidscript is true, as -x cannot be used with
2127 forbid_setid('x', suidscript);
2128 /* Hence you can't get here if suidscript is true */
2130 linestr_sv = newSV_type(SVt_PV);
2131 lex_start_flags |= LEX_START_COPIED;
2132 find_beginning(linestr_sv, rsfp);
2133 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2134 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2138 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
2139 CvUNIQUE_on(PL_compcv);
2141 CvPADLIST(PL_compcv) = pad_new(0);
2143 PL_isarev = newHV();
2146 boot_core_UNIVERSAL();
2148 newXS("Internals::V", S_Internals_V, __FILE__);
2151 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
2153 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(SYMBIAN)
2159 # ifdef HAS_SOCKS5_INIT
2160 socks5_init(argv[0]);
2166 init_predump_symbols();
2167 /* init_postdump_symbols not currently designed to be called */
2168 /* more than once (ENV isn't cleared first, for example) */
2169 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
2171 init_postdump_symbols(argc,argv,env);
2173 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2174 * or explicitly in some platforms.
2175 * locale.c:Perl_init_i18nl10n() if the environment
2176 * look like the user wants to use UTF-8. */
2177 #if defined(__SYMBIAN32__)
2178 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2180 # ifndef PERL_IS_MINIPERL
2182 /* Requires init_predump_symbols(). */
2183 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
2188 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
2189 * and the default open disciplines. */
2190 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2191 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2193 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2194 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2195 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2197 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2198 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2199 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2201 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2202 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
2203 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2205 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2206 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2209 sv_setpvs(sv, ":utf8\0:utf8");
2211 sv_setpvs(sv, ":utf8\0");
2214 sv_setpvs(sv, "\0:utf8");
2223 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2224 if (strEQ(s, "unsafe"))
2225 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2226 else if (strEQ(s, "safe"))
2227 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2229 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2236 if (!TAINTING_get &&
2237 (s = PerlEnv_getenv("PERL_XMLDUMP"))) {
2241 PL_xmlfp = PerlIO_stdout();
2243 PL_xmlfp = PerlIO_open(s, "w");
2245 Perl_croak(aTHX_ "Can't open %s", s);
2247 my_setenv("PERL_XMLDUMP", NULL); /* hide from subprocs */
2253 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2254 PL_madskills = atoi(s);
2255 my_setenv("PERL_MADSKILLS", NULL); /* hide from subprocs */
2260 lex_start(linestr_sv, rsfp, lex_start_flags);
2262 SvREFCNT_dec(linestr_sv);
2264 PL_subname = newSVpvs("main");
2266 if (add_read_e_script)
2267 filter_add(read_e_script, NULL);
2269 /* now parse the script */
2271 SETERRNO(0,SS_NORMAL);
2272 if (yyparse(GRAMPROG) || PL_parser->error_count) {
2274 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
2276 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
2280 CopLINE_set(PL_curcop, 0);
2281 SET_CURSTASH(PL_defstash);
2283 SvREFCNT_dec(PL_e_script);
2291 SAVECOPFILE(PL_curcop);
2292 SAVECOPLINE(PL_curcop);
2293 gv_check(PL_defstash);
2302 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2303 dump_mstats("after compilation:");
2308 PL_restartjmpenv = NULL;
2314 =for apidoc perl_run
2316 Tells a Perl interpreter to run. See L<perlembed>.
2329 PERL_ARGS_ASSERT_PERL_RUN;
2330 #ifndef MULTIPLICITY
2331 PERL_UNUSED_ARG(my_perl);
2334 oldscope = PL_scopestack_ix;
2342 cxstack_ix = -1; /* start context stack again */
2344 case 0: /* normal completion */
2348 case 2: /* my_exit() */
2349 while (PL_scopestack_ix > oldscope)
2352 SET_CURSTASH(PL_defstash);
2353 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
2354 PL_endav && !PL_minus_c) {
2355 PERL_SET_PHASE(PERL_PHASE_END);
2356 call_list(oldscope, PL_endav);
2359 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2360 dump_mstats("after execution: ");
2366 POPSTACK_TO(PL_mainstack);
2369 PerlIO_printf(Perl_error_log, "panic: restartop in perl_run\n");
2380 S_run_body(pTHX_ I32 oldscope)
2383 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support (0x%x).\n",
2384 PL_sawampersand ? "Enabling" : "Omitting",
2385 (unsigned int)(PL_sawampersand)));
2387 if (!PL_restartop) {
2391 exit(0); /* less likely to core dump than my_exit(0) */
2395 if (DEBUG_x_TEST || DEBUG_B_TEST)
2396 dump_all_perl(!DEBUG_B_TEST);
2398 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
2402 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
2405 if (PERLDB_SINGLE && PL_DBsingle)
2406 sv_setiv(PL_DBsingle, 1);
2408 PERL_SET_PHASE(PERL_PHASE_INIT);
2409 call_list(oldscope, PL_initav);
2411 #ifdef PERL_DEBUG_READONLY_OPS
2412 if (PL_main_root && PL_main_root->op_slabbed)
2413 Slab_to_ro(OpSLAB(PL_main_root));
2419 PERL_SET_PHASE(PERL_PHASE_RUN);
2422 PL_restartjmpenv = NULL;
2423 PL_op = PL_restartop;
2427 else if (PL_main_start) {
2428 CvDEPTH(PL_main_cv) = 1;
2429 PL_op = PL_main_start;
2433 assert(0); /* NOTREACHED */
2437 =head1 SV Manipulation Functions
2439 =for apidoc p||get_sv
2441 Returns the SV of the specified Perl scalar. C<flags> are passed to
2442 C<gv_fetchpv>. If C<GV_ADD> is set and the
2443 Perl variable does not exist then it will be created. If C<flags> is zero
2444 and the variable does not exist then NULL is returned.
2450 Perl_get_sv(pTHX_ const char *name, I32 flags)
2454 PERL_ARGS_ASSERT_GET_SV;
2456 gv = gv_fetchpv(name, flags, SVt_PV);
2463 =head1 Array Manipulation Functions
2465 =for apidoc p||get_av
2467 Returns the AV of the specified Perl global or package array with the given
2468 name (so it won't work on lexical variables). C<flags> are passed
2469 to C<gv_fetchpv>. If C<GV_ADD> is set and the
2470 Perl variable does not exist then it will be created. If C<flags> is zero
2471 and the variable does not exist then NULL is returned.
2473 Perl equivalent: C<@{"$name"}>.
2479 Perl_get_av(pTHX_ const char *name, I32 flags)
2481 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
2483 PERL_ARGS_ASSERT_GET_AV;
2493 =head1 Hash Manipulation Functions
2495 =for apidoc p||get_hv
2497 Returns the HV of the specified Perl hash. C<flags> are passed to
2498 C<gv_fetchpv>. If C<GV_ADD> is set and the
2499 Perl variable does not exist then it will be created. If C<flags> is zero
2500 and the variable does not exist then NULL is returned.
2506 Perl_get_hv(pTHX_ const char *name, I32 flags)
2508 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
2510 PERL_ARGS_ASSERT_GET_HV;
2520 =head1 CV Manipulation Functions
2522 =for apidoc p||get_cvn_flags
2524 Returns the CV of the specified Perl subroutine. C<flags> are passed to
2525 C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2526 exist then it will be declared (which has the same effect as saying
2527 C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2528 then NULL is returned.
2530 =for apidoc p||get_cv
2532 Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
2538 Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
2540 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
2542 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2544 /* XXX this is probably not what they think they're getting.
2545 * It has the same effect as "sub name;", i.e. just a forward
2547 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
2548 return newSTUB(gv,0);
2555 /* Nothing in core calls this now, but we can't replace it with a macro and
2556 move it to mathoms.c as a macro would evaluate name twice. */
2558 Perl_get_cv(pTHX_ const char *name, I32 flags)
2560 PERL_ARGS_ASSERT_GET_CV;
2562 return get_cvn_flags(name, strlen(name), flags);
2565 /* Be sure to refetch the stack pointer after calling these routines. */
2569 =head1 Callback Functions
2571 =for apidoc p||call_argv
2573 Performs a callback to the specified named and package-scoped Perl subroutine
2574 with C<argv> (a NULL-terminated array of strings) as arguments. See L<perlcall>.
2576 Approximate Perl equivalent: C<&{"$sub_name"}(@$argv)>.
2582 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, char **argv)
2584 /* See G_* flags in cop.h */
2585 /* null terminated arg list */
2590 PERL_ARGS_ASSERT_CALL_ARGV;
2595 mXPUSHs(newSVpv(*argv,0));
2600 return call_pv(sub_name, flags);
2604 =for apidoc p||call_pv
2606 Performs a callback to the specified Perl sub. See L<perlcall>.
2612 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
2613 /* name of the subroutine */
2614 /* See G_* flags in cop.h */
2616 PERL_ARGS_ASSERT_CALL_PV;
2618 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
2622 =for apidoc p||call_method
2624 Performs a callback to the specified Perl method. The blessed object must
2625 be on the stack. See L<perlcall>.
2631 Perl_call_method(pTHX_ const char *methname, I32 flags)
2632 /* name of the subroutine */
2633 /* See G_* flags in cop.h */
2636 PERL_ARGS_ASSERT_CALL_METHOD;
2638 len = strlen(methname);
2640 /* XXX: sv_2mortal(newSVpvn_share(methname, len)) can be faster */
2641 return call_sv(newSVpvn_flags(methname, len, SVs_TEMP), flags | G_METHOD);
2644 /* May be called with any of a CV, a GV, or an SV containing the name. */
2646 =for apidoc p||call_sv
2648 Performs a callback to the Perl sub whose name is in the SV. See
2655 Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
2656 /* See G_* flags in cop.h */
2659 LOGOP myop; /* fake syntax tree node */
2664 bool oldcatch = CATCH_GET;
2666 OP* const oldop = PL_op;
2669 PERL_ARGS_ASSERT_CALL_SV;
2671 if (flags & G_DISCARD) {
2675 if (!(flags & G_WANT)) {
2676 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2681 Zero(&myop, 1, LOGOP);
2682 if (!(flags & G_NOARGS))
2683 myop.op_flags |= OPf_STACKED;
2684 myop.op_flags |= OP_GIMME_REVERSE(flags);
2688 EXTEND(PL_stack_sp, 1);
2689 *++PL_stack_sp = sv;
2691 oldscope = PL_scopestack_ix;
2693 if (PERLDB_SUB && PL_curstash != PL_debstash
2694 /* Handle first BEGIN of -d. */
2695 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
2696 /* Try harder, since this may have been a sighandler, thus
2697 * curstash may be meaningless. */
2698 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
2699 && !(flags & G_NODEBUG))
2700 myop.op_private |= OPpENTERSUB_DB;
2702 if (flags & G_METHOD) {
2703 Zero(&method_op, 1, UNOP);
2704 method_op.op_next = (OP*)&myop;
2705 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2706 method_op.op_type = OP_METHOD;
2707 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
2708 myop.op_type = OP_ENTERSUB;
2709 PL_op = (OP*)&method_op;
2712 if (!(flags & G_EVAL)) {
2714 CALL_BODY_SUB((OP*)&myop);
2715 retval = PL_stack_sp - (PL_stack_base + oldmark);
2716 CATCH_SET(oldcatch);
2719 myop.op_other = (OP*)&myop;
2721 create_eval_scope(flags|G_FAKINGEVAL);
2729 CALL_BODY_SUB((OP*)&myop);
2730 retval = PL_stack_sp - (PL_stack_base + oldmark);
2731 if (!(flags & G_KEEPERR)) {
2739 /* my_exit() was called */
2740 SET_CURSTASH(PL_defstash);
2744 assert(0); /* NOTREACHED */
2747 PL_restartjmpenv = NULL;
2748 PL_op = PL_restartop;
2752 PL_stack_sp = PL_stack_base + oldmark;
2753 if ((flags & G_WANT) == G_ARRAY)
2757 *++PL_stack_sp = &PL_sv_undef;
2762 if (PL_scopestack_ix > oldscope)
2763 delete_eval_scope();
2767 if (flags & G_DISCARD) {
2768 PL_stack_sp = PL_stack_base + oldmark;
2777 /* Eval a string. The G_EVAL flag is always assumed. */
2780 =for apidoc p||eval_sv
2782 Tells Perl to C<eval> the string in the SV. It supports the same flags
2783 as C<call_sv>, with the obvious exception of G_EVAL. See L<perlcall>.
2789 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
2791 /* See G_* flags in cop.h */
2795 UNOP myop; /* fake syntax tree node */
2796 VOL I32 oldmark = SP - PL_stack_base;
2799 OP* const oldop = PL_op;
2802 PERL_ARGS_ASSERT_EVAL_SV;
2804 if (flags & G_DISCARD) {
2811 Zero(&myop, 1, UNOP);
2812 EXTEND(PL_stack_sp, 1);
2813 *++PL_stack_sp = sv;
2815 if (!(flags & G_NOARGS))
2816 myop.op_flags = OPf_STACKED;
2817 myop.op_type = OP_ENTEREVAL;
2818 myop.op_flags |= OP_GIMME_REVERSE(flags);
2819 if (flags & G_KEEPERR)
2820 myop.op_flags |= OPf_SPECIAL;
2821 if (PL_reg_state.re_reparsing)
2822 myop.op_private = OPpEVAL_COPHH;
2824 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2825 * before a PUSHEVAL, which corrupts the stack after a croak */
2826 TAINT_PROPER("eval_sv()");
2832 if (PL_op == (OP*)(&myop)) {
2833 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2835 goto fail; /* failed in compilation */
2838 retval = PL_stack_sp - (PL_stack_base + oldmark);
2839 if (!(flags & G_KEEPERR)) {
2847 /* my_exit() was called */
2848 SET_CURSTASH(PL_defstash);
2852 assert(0); /* NOTREACHED */
2855 PL_restartjmpenv = NULL;
2856 PL_op = PL_restartop;
2861 PL_stack_sp = PL_stack_base + oldmark;
2862 if ((flags & G_WANT) == G_ARRAY)
2866 *++PL_stack_sp = &PL_sv_undef;
2872 if (flags & G_DISCARD) {
2873 PL_stack_sp = PL_stack_base + oldmark;
2883 =for apidoc p||eval_pv
2885 Tells Perl to C<eval> the given string and return an SV* result.
2891 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
2894 SV* sv = newSVpv(p, 0);
2896 PERL_ARGS_ASSERT_EVAL_PV;
2898 eval_sv(sv, G_SCALAR);
2907 /* just check empty string or undef? */
2908 if (croak_on_error) {
2909 SV * const errsv = ERRSV;
2910 if(SvTRUE_NN(errsv))
2911 /* replace with croak_sv? */
2912 Perl_croak_nocontext("%s", SvPV_nolen_const(errsv));
2918 /* Require a module. */
2921 =head1 Embedding Functions
2923 =for apidoc p||require_pv
2925 Tells Perl to C<require> the file named by the string argument. It is
2926 analogous to the Perl code C<eval "require '$file'">. It's even
2927 implemented that way; consider using load_module instead.
2932 Perl_require_pv(pTHX_ const char *pv)
2938 PERL_ARGS_ASSERT_REQUIRE_PV;
2940 PUSHSTACKi(PERLSI_REQUIRE);
2942 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2943 eval_sv(sv_2mortal(sv), G_DISCARD);
2949 S_usage(pTHX) /* XXX move this out into a module ? */
2951 /* This message really ought to be max 23 lines.
2952 * Removed -h because the user already knows that option. Others? */
2954 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
2955 minimum of 509 character string literals. */
2956 static const char * const usage_msg[] = {
2957 " -0[octal] specify record separator (\\0, if no argument)\n"
2958 " -a autosplit mode with -n or -p (splits $_ into @F)\n"
2959 " -C[number/list] enables the listed Unicode features\n"
2960 " -c check syntax only (runs BEGIN and CHECK blocks)\n"
2961 " -d[:debugger] run program under debugger\n"
2962 " -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
2963 " -e program one line of program (several -e's allowed, omit programfile)\n"
2964 " -E program like -e, but enables all optional features\n"
2965 " -f don't do $sitelib/sitecustomize.pl at startup\n"
2966 " -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
2967 " -i[extension] edit <> files in place (makes backup if extension supplied)\n"
2968 " -Idirectory specify @INC/#include directory (several -I's allowed)\n",
2969 " -l[octal] enable line ending processing, specifies line terminator\n"
2970 " -[mM][-]module execute \"use/no module...\" before executing program\n"
2971 " -n assume \"while (<>) { ... }\" loop around program\n"
2972 " -p assume loop like -n but print line also, like sed\n"
2973 " -s enable rudimentary parsing for switches after programfile\n"
2974 " -S look for programfile using PATH environment variable\n",
2975 " -t enable tainting warnings\n"
2976 " -T enable tainting checks\n"
2977 " -u dump core after parsing program\n"
2978 " -U allow unsafe operations\n"
2979 " -v print version, patchlevel and license\n"
2980 " -V[:variable] print configuration summary (or a single Config.pm variable)\n",
2981 " -w enable many useful warnings\n"
2982 " -W enable all warnings\n"
2983 " -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
2984 " -X disable all warnings\n"
2986 "Run 'perldoc perl' for more help with Perl.\n\n",
2989 const char * const *p = usage_msg;
2990 PerlIO *out = PerlIO_stdout();
2993 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
2996 PerlIO_puts(out, *p++);
3000 /* convert a string of -D options (or digits) into an int.
3001 * sets *s to point to the char after the options */
3005 Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
3007 static const char * const usage_msgd[] = {
3008 " Debugging flag values: (see also -d)\n"
3009 " p Tokenizing and parsing (with v, displays parse stack)\n"
3010 " s Stack snapshots (with v, displays all stacks)\n"
3011 " l Context (loop) stack processing\n"
3012 " t Trace execution\n"
3013 " o Method and overloading resolution\n",
3014 " c String/numeric conversions\n"
3015 " P Print profiling info, source file input state\n"
3016 " m Memory and SV allocation\n"
3017 " f Format processing\n"
3018 " r Regular expression parsing and execution\n"
3019 " x Syntax tree dump\n",
3020 " u Tainting checks\n"
3021 " H Hash dump -- usurps values()\n"
3022 " X Scratchpad allocation\n"
3024 " S Op slab allocation\n"
3026 " R Include reference counts of dumped variables (eg when using -Ds)\n",
3027 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
3028 " v Verbose: use in conjunction with other flags\n"
3029 " C Copy On Write\n"
3030 " A Consistency checks on internal structures\n"
3031 " q quiet - currently only suppresses the 'EXECUTING' message\n"
3032 " M trace smart match resolution\n"
3033 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
3038 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
3041 /* if adding extra options, remember to update DEBUG_MASK */
3042 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMB";
3044 for (; isALNUM(**s); (*s)++) {
3045 const char * const d = strchr(debopts,**s);
3047 i |= 1 << (d - debopts);
3048 else if (ckWARN_d(WARN_DEBUGGING))
3049 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3050 "invalid option -D%c, use -D'' to see choices\n", **s);
3053 else if (isDIGIT(**s)) {
3055 for (; isALNUM(**s); (*s)++) ;
3057 else if (givehelp) {
3058 const char *const *p = usage_msgd;
3059 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
3062 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
3063 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3064 "-Dp not implemented on this platform\n");
3070 /* This routine handles any switches that can be given during run */
3073 Perl_moreswitches(pTHX_ const char *s)
3077 const char option = *s; /* used to remember option in -m/-M code */
3079 PERL_ARGS_ASSERT_MORESWITCHES;
3087 SvREFCNT_dec(PL_rs);
3088 if (s[1] == 'x' && s[2]) {
3089 const char *e = s+=2;
3095 flags = PERL_SCAN_SILENT_ILLDIGIT;
3096 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3097 if (s + numlen < e) {
3098 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3102 PL_rs = newSVpvs("");
3103 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
3104 tmps = (U8*)SvPVX(PL_rs);
3105 uvchr_to_utf8(tmps, rschar);
3106 SvCUR_set(PL_rs, UNISKIP(rschar));
3111 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3112 if (rschar & ~((U8)~0))
3113 PL_rs = &PL_sv_undef;
3114 else if (!rschar && numlen >= 2)
3115 PL_rs = newSVpvs("");
3117 char ch = (char)rschar;
3118 PL_rs = newSVpvn(&ch, 1);
3121 sv_setsv(get_sv("/", GV_ADD), PL_rs);
3126 PL_unicode = parse_unicode_opts( (const char **)&s );
3127 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3133 while (*s && !isSPACE(*s)) ++s;
3134 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
3145 forbid_setid('d', FALSE);
3148 /* -dt indicates to the debugger that threads will be used */
3149 if (*s == 't' && !isALNUM(s[1])) {
3151 my_setenv("PERL5DB_THREADED", "1");
3154 /* The following permits -d:Mod to accepts arguments following an =
3155 in the fashion that -MSome::Mod does. */
3156 if (*s == ':' || *s == '=') {
3163 sv = newSVpvs("no Devel::");
3165 sv = newSVpvs("use Devel::");
3169 end = s + strlen(s);
3171 /* We now allow -d:Module=Foo,Bar and -d:-Module */
3172 while(isALNUM(*s) || *s==':') ++s;
3174 sv_catpvn(sv, start, end - start);
3176 sv_catpvn(sv, start, s-start);
3177 /* Don't use NUL as q// delimiter here, this string goes in the
3179 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
3182 my_setenv("PERL5DB", SvPV_nolen_const(sv));
3186 PL_perldb = PERLDB_ALL;
3193 forbid_setid('D', FALSE);
3195 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
3196 #else /* !DEBUGGING */
3197 if (ckWARN_d(WARN_DEBUGGING))
3198 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3199 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
3200 for (s++; isALNUM(*s); s++) ;
3207 Safefree(PL_inplace);
3208 #if defined(__CYGWIN__) /* do backup extension automagically */
3209 if (*(s+1) == '\0') {
3210 PL_inplace = savepvs(".bak");
3213 #endif /* __CYGWIN__ */
3215 const char * const start = ++s;
3216 while (*s && !isSPACE(*s))
3219 PL_inplace = savepvn(start, s - start);
3223 if (*s == '-') /* Additional switches on #! line. */
3227 case 'I': /* -I handled both here and in parse_body() */
3228 forbid_setid('I', FALSE);
3230 while (*s && isSPACE(*s))
3235 /* ignore trailing spaces (possibly followed by other switches) */
3237 for (e = p; *e && !isSPACE(*e); e++) ;
3241 } while (*p && *p != '-');
3243 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
3249 Perl_croak(aTHX_ "No directory specified for -I");
3255 SvREFCNT_dec(PL_ors_sv);
3261 PL_ors_sv = newSVpvs("\n");
3262 numlen = 3 + (*s == '0');
3263 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
3267 if (RsPARA(PL_rs)) {
3268 PL_ors_sv = newSVpvs("\n\n");
3271 PL_ors_sv = newSVsv(PL_rs);
3276 forbid_setid('M', FALSE); /* XXX ? */
3279 forbid_setid('m', FALSE); /* XXX ? */
3284 const char *use = "use ";
3286 /* -M-foo == 'no foo' */
3287 /* Leading space on " no " is deliberate, to make both
3288 possibilities the same length. */
3289 if (*s == '-') { use = " no "; ++s; }
3290 sv = newSVpvn(use,4);
3292 /* We allow -M'Module qw(Foo Bar)' */
3293 while(isALNUM(*s) || *s==':') {
3302 Perl_croak(aTHX_ "Module name required with -%c option",
3305 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3306 "contains single ':'",
3307 (int)(s - start), start, option);
3308 end = s + strlen(s);
3310 sv_catpvn(sv, start, end - start);
3311 if (option == 'm') {
3313 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
3314 sv_catpvs( sv, " ()");
3317 sv_catpvn(sv, start, s-start);
3318 /* Use NUL as q''-delimiter. */
3319 sv_catpvs(sv, " split(/,/,q\0");
3321 sv_catpvn(sv, s, end - s);
3322 sv_catpvs(sv, "\0)");
3325 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
3328 Perl_croak(aTHX_ "Missing argument to -%c", option);
3339 forbid_setid('s', FALSE);
3340 PL_doswitches = TRUE;
3345 #if SILENT_NO_TAINT_SUPPORT
3346 /* silently ignore */
3347 #elif NO_TAINT_SUPPORT
3348 Perl_croak("This perl was compiled without taint support. "
3349 "Cowardly refusing to run with -t or -T flags");
3357 PL_do_undump = TRUE;
3367 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
3368 PL_dowarn |= G_WARN_ON;
3373 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
3374 if (!specialWARN(PL_compiling.cop_warnings))
3375 PerlMemShared_free(PL_compiling.cop_warnings);
3376 PL_compiling.cop_warnings = pWARN_ALL ;
3380 PL_dowarn = G_WARN_ALL_OFF;
3381 if (!specialWARN(PL_compiling.cop_warnings))
3382 PerlMemShared_free(PL_compiling.cop_warnings);
3383 PL_compiling.cop_warnings = pWARN_NONE ;
3390 if (s[0] == '-') /* Additional switches on #! line. */
3395 #if defined(WIN32) || !defined(PERL_STRICT_CR)
3401 #ifdef ALTERNATE_SHEBANG
3402 case 'S': /* OS/2 needs -S on "extproc" line. */
3405 case 'e': case 'f': case 'x': case 'E':
3406 #ifndef ALTERNATE_SHEBANG
3410 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
3413 "Unrecognized switch: -%.1s (-h will show valid options)",s
3423 PerlIO * PIO_stdout;
3424 if (!sv_derived_from(PL_patchlevel, "version"))
3425 upg_version(PL_patchlevel, TRUE);
3428 SV* level= vstringify(PL_patchlevel);
3429 #ifdef PERL_PATCHNUM
3430 # ifdef PERL_GIT_UNCOMMITTED_CHANGES
3431 SV *num = newSVpvs(PERL_PATCHNUM "*");
3433 SV *num = newSVpvs(PERL_PATCHNUM);
3436 STRLEN level_len, num_len;
3437 char * level_str, * num_str;
3438 num_str = SvPV(num, num_len);
3439 level_str = SvPV(level, level_len);
3440 if (num_len>=level_len && strnEQ(num_str,level_str,level_len)) {
3441 SvREFCNT_dec(level);
3444 Perl_sv_catpvf(aTHX_ level, " (%"SVf")", num);
3449 PIO_stdout = PerlIO_stdout();
3450 PerlIO_printf(PIO_stdout,
3451 "\nThis is perl " STRINGIFY(PERL_REVISION)
3452 ", version " STRINGIFY(PERL_VERSION)
3453 ", subversion " STRINGIFY(PERL_SUBVERSION)
3454 " (%"SVf") built for " ARCHNAME, level
3456 SvREFCNT_dec(level);
3459 PIO_stdout = PerlIO_stdout();
3460 /* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3461 PerlIO_printf(PIO_stdout,
3462 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
3463 SVfARG(vstringify(PL_patchlevel))));
3464 PerlIO_printf(PIO_stdout,
3465 Perl_form(aTHX_ " built under %s at %s %s\n",
3466 OSNAME, __DATE__, __TIME__));
3467 PerlIO_printf(PIO_stdout,
3468 Perl_form(aTHX_ " OS Specific Release: %s\n",
3471 #if defined(LOCAL_PATCH_COUNT)
3472 if (LOCAL_PATCH_COUNT > 0)
3473 PerlIO_printf(PIO_stdout,
3474 "\n(with %d registered patch%s, "
3475 "see perl -V for more detail)",
3477 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
3480 PerlIO_printf(PIO_stdout,
3481 "\n\nCopyright 1987-2012, Larry Wall\n");
3483 PerlIO_printf(PIO_stdout,
3484 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
3487 PerlIO_printf(PIO_stdout,
3488 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3489 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
3492 PerlIO_printf(PIO_stdout,
3493 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
3494 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
3497 PerlIO_printf(PIO_stdout,
3498 "BeOS port Copyright Tom Spindler, 1997-1999\n");
3501 PerlIO_printf(PIO_stdout,
3502 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
3505 PerlIO_printf(PIO_stdout,
3506 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
3509 PerlIO_printf(PIO_stdout,
3510 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
3513 PerlIO_printf(PIO_stdout,
3514 "WINCE port by Rainer Keuchel, 2001-2002\n"
3515 "Built on " __DATE__ " " __TIME__ "\n\n");
3518 #ifdef __SYMBIAN32__
3519 PerlIO_printf(PIO_stdout,
3520 "Symbian port by Nokia, 2004-2005\n");
3522 #ifdef BINARY_BUILD_NOTICE
3523 BINARY_BUILD_NOTICE;
3525 PerlIO_printf(PIO_stdout,
3527 Perl may be copied only under the terms of either the Artistic License or the\n\
3528 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
3529 Complete documentation for Perl, including FAQ lists, should be found on\n\
3530 this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
3531 Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
3535 /* compliments of Tom Christiansen */
3537 /* unexec() can be found in the Gnu emacs distribution */
3538 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
3541 #include <lib$routines.h>
3545 Perl_my_unexec(pTHX)
3547 PERL_UNUSED_CONTEXT;
3549 SV * prog = newSVpv(BIN_EXP, 0);
3550 SV * file = newSVpv(PL_origfilename, 0);
3554 sv_catpvs(prog, "/perl");
3555 sv_catpvs(file, ".perldump");
3557 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3558 /* unexec prints msg to stderr in case of failure */
3559 PerlProc_exit(status);
3562 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
3563 # elif defined(WIN32) || defined(__CYGWIN__)
3564 Perl_croak(aTHX_ "dump is not supported");
3566 ABORT(); /* for use with undump */
3571 /* initialize curinterp */
3577 # define PERLVAR(prefix,var,type)
3578 # define PERLVARA(prefix,var,n,type)
3579 # if defined(PERL_IMPLICIT_CONTEXT)
3580 # define PERLVARI(prefix,var,type,init) aTHX->prefix##var = init;
3581 # define PERLVARIC(prefix,var,type,init) aTHX->prefix##var = init;
3583 # define PERLVARI(prefix,var,type,init) PERL_GET_INTERP->var = init;
3584 # define PERLVARIC(prefix,var,type,init) PERL_GET_INTERP->var = init;
3586 # include "intrpvar.h"
3592 # define PERLVAR(prefix,var,type)
3593 # define PERLVARA(prefix,var,n,type)
3594 # define PERLVARI(prefix,var,type,init) PL_##var = init;
3595 # define PERLVARIC(prefix,var,type,init) PL_##var = init;
3596 # include "intrpvar.h"
3603 /* As these are inside a structure, PERLVARI isn't capable of initialising
3605 PL_reg_oldcurpm = PL_reg_curpm = NULL;
3606 PL_reg_poscache = PL_reg_starttry = NULL;
3610 S_init_main_stash(pTHX)
3615 PL_curstash = PL_defstash = (HV *)SvREFCNT_inc_simple_NN(newHV());
3616 /* We know that the string "main" will be in the global shared string
3617 table, so it's a small saving to use it rather than allocate another
3619 PL_curstname = newSVpvs_share("main");
3620 gv = gv_fetchpvs("main::", GV_ADD|GV_NOTQUAL, SVt_PVHV);
3621 /* If we hadn't caused another reference to "main" to be in the shared
3622 string table above, then it would be worth reordering these two,
3623 because otherwise all we do is delete "main" from it as a consequence
3624 of the SvREFCNT_dec, only to add it again with hv_name_set */
3625 SvREFCNT_dec(GvHV(gv));
3626 hv_name_set(PL_defstash, "main", 4, 0);
3627 GvHV(gv) = MUTABLE_HV(SvREFCNT_inc_simple(PL_defstash));
3629 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpvs("INC", GV_ADD|GV_NOTQUAL,
3631 SvREFCNT_inc_simple_void(PL_incgv); /* Don't allow it to be freed */
3632 GvMULTI_on(PL_incgv);
3633 PL_hintgv = gv_fetchpvs("\010", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^H */
3634 GvMULTI_on(PL_hintgv);
3635 PL_defgv = gv_fetchpvs("_", GV_ADD|GV_NOTQUAL, SVt_PVAV);
3636 SvREFCNT_inc_simple_void(PL_defgv);
3637 PL_errgv = gv_HVadd(gv_fetchpvs("@", GV_ADD|GV_NOTQUAL, SVt_PV));
3638 SvREFCNT_inc_simple_void(PL_errgv);
3639 GvMULTI_on(PL_errgv);
3640 PL_replgv = gv_fetchpvs("\022", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^R */
3641 GvMULTI_on(PL_replgv);
3642 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
3643 #ifdef PERL_DONT_CREATE_GVSV
3646 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
3648 SET_CURSTASH(PL_defstash);
3649 CopSTASH_set(&PL_compiling, PL_defstash);
3650 PL_debstash = GvHV(gv_fetchpvs("DB::", GV_ADDMULTI, SVt_PVHV));
3651 PL_globalstash = GvHV(gv_fetchpvs("CORE::GLOBAL::", GV_ADDMULTI,
3653 /* We must init $/ before switches are processed. */
3654 sv_setpvs(get_sv("/", GV_ADD), "\n");
3658 S_open_script(pTHX_ const char *scriptname, bool dosearch, bool *suidscript)
3661 PerlIO *rsfp = NULL;
3664 PERL_ARGS_ASSERT_OPEN_SCRIPT;
3667 PL_origfilename = savepvs("-e");
3670 /* if find_script() returns, it returns a malloc()-ed value */
3671 scriptname = PL_origfilename = find_script(scriptname, dosearch, NULL, 1);
3673 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
3674 const char *s = scriptname + 8;
3680 * Tell apart "normal" usage of fdscript, e.g.
3681 * with bash on FreeBSD:
3682 * perl <( echo '#!perl -DA'; echo 'print "$0\n"')
3683 * from usage in suidperl.
3684 * Does any "normal" usage leave garbage after the number???
3685 * Is it a mistake to use a similar /dev/fd/ construct for
3690 * Be supersafe and do some sanity-checks.
3691 * Still, can we be sure we got the right thing?
3694 Perl_croak(aTHX_ "Wrong syntax (suid) fd script name \"%s\"\n", s);
3697 Perl_croak(aTHX_ "Missing (suid) fd script name\n");
3699 scriptname = savepv(s + 1);
3700 Safefree(PL_origfilename);
3701 PL_origfilename = (char *)scriptname;
3706 CopFILE_free(PL_curcop);
3707 CopFILE_set(PL_curcop, PL_origfilename);
3708 if (*PL_origfilename == '-' && PL_origfilename[1] == '\0')
3709 scriptname = (char *)"";
3710 if (fdscript >= 0) {
3711 rsfp = PerlIO_fdopen(fdscript,PERL_SCRIPT_MODE);
3713 else if (!*scriptname) {
3714 forbid_setid(0, *suidscript);
3718 #ifdef FAKE_BIT_BUCKET
3719 /* This hack allows one not to have /dev/null (or BIT_BUCKET as it
3720 * is called) and still have the "-e" work. (Believe it or not,
3721 * a /dev/null is required for the "-e" to work because source
3722 * filter magic is used to implement it. ) This is *not* a general
3723 * replacement for a /dev/null. What we do here is create a temp
3724 * file (an empty file), open up that as the script, and then
3725 * immediately close and unlink it. Close enough for jazz. */
3726 #define FAKE_BIT_BUCKET_PREFIX "/tmp/perlnull-"
3727 #define FAKE_BIT_BUCKET_SUFFIX "XXXXXXXX"
3728 #define FAKE_BIT_BUCKET_TEMPLATE FAKE_BIT_BUCKET_PREFIX FAKE_BIT_BUCKET_SUFFIX
3729 char tmpname[sizeof(FAKE_BIT_BUCKET_TEMPLATE)] = {
3730 FAKE_BIT_BUCKET_TEMPLATE
3732 const char * const err = "Failed to create a fake bit bucket";
3733 if (strEQ(scriptname, BIT_BUCKET)) {
3734 #ifdef HAS_MKSTEMP /* Hopefully mkstemp() is safe here. */
3735 int tmpfd = mkstemp(tmpname);
3737 scriptname = tmpname;
3740 Perl_croak(aTHX_ err);
3743 scriptname = mktemp(tmpname);
3745 Perl_croak(aTHX_ err);
3750 rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
3751 #ifdef FAKE_BIT_BUCKET
3752 if (memEQ(scriptname, FAKE_BIT_BUCKET_PREFIX,
3753 sizeof(FAKE_BIT_BUCKET_PREFIX) - 1)
3754 && strlen(scriptname) == sizeof(tmpname) - 1) {
3757 scriptname = BIT_BUCKET;
3761 /* PSz 16 Sep 03 Keep neat error message */
3763 Perl_croak(aTHX_ "Can't open "BIT_BUCKET": %s\n", Strerror(errno));
3765 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3766 CopFILE(PL_curcop), Strerror(errno));
3768 #if defined(HAS_FCNTL) && defined(F_SETFD)
3769 /* ensure close-on-exec */
3770 fcntl(PerlIO_fileno(rsfp), F_SETFD, 1);
3776 * I_SYSSTATVFS HAS_FSTATVFS
3778 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
3779 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
3780 * here so that metaconfig picks them up. */
3783 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
3784 /* Don't even need this function. */
3787 S_validate_suid(pTHX_ PerlIO *rsfp)
3789 const UV my_uid = PerlProc_getuid();
3790 const UV my_euid = PerlProc_geteuid();
3791 const UV my_gid = PerlProc_getgid();
3792 const UV my_egid = PerlProc_getegid();
3794 PERL_ARGS_ASSERT_VALIDATE_SUID;
3796 if (my_euid != my_uid || my_egid != my_gid) { /* (suidperl doesn't exist, in fact) */
3799 PerlLIO_fstat(PerlIO_fileno(rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3800 if ((my_euid != my_uid && my_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3802 (my_egid != my_gid && my_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3805 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3806 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3807 /* not set-id, must be wrapped */
3810 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3813 S_find_beginning(pTHX_ SV* linestr_sv, PerlIO *rsfp)
3819 PERL_ARGS_ASSERT_FIND_BEGINNING;
3821 /* skip forward in input to the real script? */
3824 if ((s = sv_gets(linestr_sv, rsfp, 0)) == NULL)
3825 Perl_croak(aTHX_ "No Perl script found in input\n");
3827 } while (!(*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))));
3828 PerlIO_ungetc(rsfp, '\n'); /* to keep line count right */
3829 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3831 while (*s == ' ' || *s == '\t') s++;
3833 while (isDIGIT(s2[-1]) || s2[-1] == '-' || s2[-1] == '.'
3834 || s2[-1] == '_') s2--;
3835 if (strnEQ(s2-4,"perl",4))
3836 while ((s = moreswitches(s)))
3845 /* no need to do anything here any more if we don't
3847 #if !NO_TAINT_SUPPORT
3849 const UV my_uid = PerlProc_getuid();
3850 const UV my_euid = PerlProc_geteuid();
3851 const UV my_gid = PerlProc_getgid();
3852 const UV my_egid = PerlProc_getegid();
3854 /* Should not happen: */
3855 CHECK_MALLOC_TAINT(my_uid && (my_euid != my_uid || my_egid != my_gid));
3856 TAINTING_set( TAINTING_get | (my_uid && (my_euid != my_uid || my_egid != my_gid)) );
3860 * Should go by suidscript, not uid!=euid: why disallow
3861 * system("ls") in scripts run from setuid things?
3862 * Or, is this run before we check arguments and set suidscript?
3863 * What about SETUID_SCRIPTS_ARE_SECURE_NOW: could we use fdscript then?
3864 * (We never have suidscript, can we be sure to have fdscript?)
3865 * Or must then go by UID checks? See comments in forbid_setid also.
3869 /* This is used very early in the lifetime of the program,
3870 * before even the options are parsed, so PL_tainting has
3871 * not been initialized properly. */
3873 Perl_doing_taint(int argc, char *argv[], char *envp[])
3875 #ifndef PERL_IMPLICIT_SYS
3876 /* If we have PERL_IMPLICIT_SYS we can't call getuid() et alia
3877 * before we have an interpreter-- and the whole point of this
3878 * function is to be called at such an early stage. If you are on
3879 * a system with PERL_IMPLICIT_SYS but you do have a concept of
3880 * "tainted because running with altered effective ids', you'll
3881 * have to add your own checks somewhere in here. The two most
3882 * known samples of 'implicitness' are Win32 and NetWare, neither
3883 * of which has much of concept of 'uids'. */
3884 int uid = PerlProc_getuid();
3885 int euid = PerlProc_geteuid();
3886 int gid = PerlProc_getgid();
3887 int egid = PerlProc_getegid();
3894 if (uid && (euid != uid || egid != gid))
3896 #endif /* !PERL_IMPLICIT_SYS */
3897 /* This is a really primitive check; environment gets ignored only
3898 * if -T are the first chars together; otherwise one gets
3899 * "Too late" message. */
3900 if ( argc > 1 && argv[1][0] == '-'
3901 && (argv[1][1] == 't' || argv[1][1] == 'T') )
3906 /* Passing the flag as a single char rather than a string is a slight space
3907 optimisation. The only message that isn't /^-.$/ is
3908 "program input from stdin", which is substituted in place of '\0', which
3909 could never be a command line flag. */
3911 S_forbid_setid(pTHX_ const char flag, const bool suidscript) /* g */
3914 char string[3] = "-x";
3915 const char *message = "program input from stdin";
3922 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
3923 if (PerlProc_getuid() != PerlProc_geteuid())
3924 Perl_croak(aTHX_ "No %s allowed while running setuid", message);
3925 if (PerlProc_getgid() != PerlProc_getegid())
3926 Perl_croak(aTHX_ "No %s allowed while running setgid", message);
3927 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3929 Perl_croak(aTHX_ "No %s allowed with (suid) fdscript", message);
3933 Perl_init_dbargs(pTHX)
3935 AV *const args = PL_dbargs = GvAV(gv_AVadd((gv_fetchpvs("DB::args",
3940 /* Someone has already created it.
3941 It might have entries, and if we just turn off AvREAL(), they will
3942 "leak" until global destruction. */
3944 if (SvTIED_mg((const SV *)args, PERL_MAGIC_tied))
3945 Perl_croak(aTHX_ "Cannot set tied @DB::args");
3947 AvREIFY_only(PL_dbargs);
3951 Perl_init_debugger(pTHX)
3954 HV * const ostash = PL_curstash;
3956 PL_curstash = (HV *)SvREFCNT_inc_simple(PL_debstash);
3958 Perl_init_dbargs(aTHX);
3959 PL_DBgv = gv_fetchpvs("DB::DB", GV_ADDMULTI, SVt_PVGV);
3960 PL_DBline = gv_fetchpvs("DB::dbline", GV_ADDMULTI, SVt_PVAV);
3961 PL_DBsub = gv_HVadd(gv_fetchpvs("DB::sub", GV_ADDMULTI, SVt_PVHV));
3962 PL_DBsingle = GvSV((gv_fetchpvs("DB::single", GV_ADDMULTI, SVt_PV)));
3963 if (!SvIOK(PL_DBsingle))
3964 sv_setiv(PL_DBsingle, 0);
3965 PL_DBtrace = GvSV((gv_fetchpvs("DB::trace", GV_ADDMULTI, SVt_PV)));
3966 if (!SvIOK(PL_DBtrace))
3967 sv_setiv(PL_DBtrace, 0);
3968 PL_DBsignal = GvSV((gv_fetchpvs("DB::signal", GV_ADDMULTI, SVt_PV)));
3969 if (!SvIOK(PL_DBsignal))
3970 sv_setiv(PL_DBsignal, 0);
3971 SvREFCNT_dec(PL_curstash);
3972 PL_curstash = ostash;
3975 #ifndef STRESS_REALLOC
3976 #define REASONABLE(size) (size)
3978 #define REASONABLE(size) (1) /* unreasonable */
3982 Perl_init_stacks(pTHX)
3985 /* start with 128-item stack and 8K cxstack */
3986 PL_curstackinfo = new_stackinfo(REASONABLE(128),
3987 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3988 PL_curstackinfo->si_type = PERLSI_MAIN;
3989 PL_curstack = PL_curstackinfo->si_stack;
3990 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
3992 PL_stack_base = AvARRAY(PL_curstack);
3993 PL_stack_sp = PL_stack_base;
3994 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
3996 Newx(PL_tmps_stack,REASONABLE(128),SV*);
3999 PL_tmps_max = REASONABLE(128);
4001 Newx(PL_markstack,REASONABLE(32),I32);
4002 PL_markstack_ptr = PL_markstack;
4003 PL_markstack_max = PL_markstack + REASONABLE(32);
4007 Newx(PL_scopestack,REASONABLE(32),I32);
4009 Newx(PL_scopestack_name,REASONABLE(32),const char*);
4011 PL_scopestack_ix = 0;
4012 PL_scopestack_max = REASONABLE(32);
4014 Newx(PL_savestack,REASONABLE(128),ANY);
4015 PL_savestack_ix = 0;
4016 PL_savestack_max = REASONABLE(128);
4025 while (PL_curstackinfo->si_next)
4026 PL_curstackinfo = PL_curstackinfo->si_next;
4027 while (PL_curstackinfo) {
4028 PERL_SI *p = PL_curstackinfo->si_prev;
4029 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
4030 Safefree(PL_curstackinfo->si_cxstack);
4031 Safefree(PL_curstackinfo);
4032 PL_curstackinfo = p;
4034 Safefree(PL_tmps_stack);
4035 Safefree(PL_markstack);
4036 Safefree(PL_scopestack);
4038 Safefree(PL_scopestack_name);
4040 Safefree(PL_savestack);
4044 Perl_populate_isa(pTHX_ const char *name, STRLEN len, ...)
4046 GV *const gv = gv_fetchpvn(name, len, GV_ADD | GV_ADDMULTI, SVt_PVAV);
4047 AV *const isa = GvAVn(gv);
4050 PERL_ARGS_ASSERT_POPULATE_ISA;
4052 if(AvFILLp(isa) != -1)
4055 /* NOTE: No support for tied ISA */
4057 va_start(args, len);
4059 const char *const parent = va_arg(args, const char*);
4064 parent_len = va_arg(args, size_t);
4066 /* Arguments are supplied with a trailing :: */
4067 assert(parent_len > 2);
4068 assert(parent[parent_len - 1] == ':');
4069 assert(parent[parent_len - 2] == ':');
4070 av_push(isa, newSVpvn(parent, parent_len - 2));
4071 (void) gv_fetchpvn(parent, parent_len, GV_ADD, SVt_PVGV);
4078 S_init_predump_symbols(pTHX)
4084 sv_setpvs(get_sv("\"", GV_ADD), " ");
4085 PL_ofsgv = (GV*)SvREFCNT_inc(gv_fetchpvs(",", GV_ADD|GV_NOTQUAL, SVt_PV));
4088 /* Historically, PVIOs were blessed into IO::Handle, unless
4089 FileHandle was loaded, in which case they were blessed into
4090 that. Action at a distance.
4091 However, if we simply bless into IO::Handle, we break code
4092 that assumes that PVIOs will have (among others) a seek
4093 method. IO::File inherits from IO::Handle and IO::Seekable,
4094 and provides the needed methods. But if we simply bless into
4095 it, then we break code that assumed that by loading
4096 IO::Handle, *it* would work.
4097 So a compromise is to set up the correct @IO::File::ISA,
4098 so that code that does C<use IO::Handle>; will still work.
4101 Perl_populate_isa(aTHX_ STR_WITH_LEN("IO::File::ISA"),
4102 STR_WITH_LEN("IO::Handle::"),
4103 STR_WITH_LEN("IO::Seekable::"),
4104 STR_WITH_LEN("Exporter::"),
4107 PL_stdingv = gv_fetchpvs("STDIN", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4108 GvMULTI_on(PL_stdingv);
4109 io = GvIOp(PL_stdingv);
4110 IoTYPE(io) = IoTYPE_RDONLY;
4111 IoIFP(io) = PerlIO_stdin();
4112 tmpgv = gv_fetchpvs("stdin", GV_ADD|GV_NOTQUAL, SVt_PV);
4114 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4116 tmpgv = gv_fetchpvs("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4119 IoTYPE(io) = IoTYPE_WRONLY;
4120 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
4122 tmpgv = gv_fetchpvs("stdout", GV_ADD|GV_NOTQUAL, SVt_PV);
4124 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4126 PL_stderrgv = gv_fetchpvs("STDERR", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4127 GvMULTI_on(PL_stderrgv);
4128 io = GvIOp(PL_stderrgv);
4129 IoTYPE(io) = IoTYPE_WRONLY;
4130 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
4131 tmpgv = gv_fetchpvs("stderr", GV_ADD|GV_NOTQUAL, SVt_PV);
4133 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4135 PL_statname = newSVpvs(""); /* last filename we did stat on */
4139 Perl_init_argv_symbols(pTHX_ int argc, char **argv)
4143 PERL_ARGS_ASSERT_INIT_ARGV_SYMBOLS;
4145 argc--,argv++; /* skip name of script */
4146 if (PL_doswitches) {
4147 for (; argc > 0 && **argv == '-'; argc--,argv++) {
4151 if (argv[0][1] == '-' && !argv[0][2]) {
4155 if ((s = strchr(argv[0], '='))) {
4156 const char *const start_name = argv[0] + 1;
4157 sv_setpv(GvSV(gv_fetchpvn_flags(start_name, s - start_name,
4158 TRUE, SVt_PV)), s + 1);
4161 sv_setiv(GvSV(gv_fetchpv(argv[0]+1, GV_ADD, SVt_PV)),1);
4164 if ((PL_argvgv = gv_fetchpvs("ARGV", GV_ADD|GV_NOTQUAL, SVt_PVAV))) {
4165 GvMULTI_on(PL_argvgv);
4166 (void)gv_AVadd(PL_argvgv);
4167 av_clear(GvAVn(PL_argvgv));
4168 for (; argc > 0; argc--,argv++) {
4169 SV * const sv = newSVpv(argv[0],0);
4170 av_push(GvAVn(PL_argvgv),sv);
4171 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
4172 if (PL_unicode & PERL_UNICODE_ARGV_FLAG)
4175 if (PL_unicode & PERL_UNICODE_WIDESYSCALLS_FLAG) /* Sarathy? */
4176 (void)sv_utf8_decode(sv);
4180 if (PL_inplace && (!PL_argvgv || AvFILL(GvAV(PL_argvgv)) == -1))
4181 Perl_ck_warner_d(aTHX_ packWARN(WARN_INPLACE),
4182 "-i used with no filenames on the command line, "
4183 "reading from STDIN");
4187 S_init_postdump_symbols(pTHX_ int argc, char **argv, char **env)
4192 PERL_ARGS_ASSERT_INIT_POSTDUMP_SYMBOLS;
4194 PL_toptarget = newSV_type(SVt_PVIV);
4195 sv_setpvs(PL_toptarget, "");
4196 PL_bodytarget = newSV_type(SVt_PVIV);
4197 sv_setpvs(PL_bodytarget, "");
4198 PL_formtarget = PL_bodytarget;
4202 init_argv_symbols(argc,argv);
4204 if ((tmpgv = gv_fetchpvs("0", GV_ADD|GV_NOTQUAL, SVt_PV))) {
4205 sv_setpv(GvSV(tmpgv),PL_origfilename);
4207 if ((PL_envgv = gv_fetchpvs("ENV", GV_ADD|GV_NOTQUAL, SVt_PVHV))) {
4209 bool env_is_not_environ;
4210 GvMULTI_on(PL_envgv);
4211 hv = GvHVn(PL_envgv);
4212 hv_magic(hv, NULL, PERL_MAGIC_env);
4214 #ifdef USE_ENVIRON_ARRAY
4215 /* Note that if the supplied env parameter is actually a copy
4216 of the global environ then it may now point to free'd memory
4217 if the environment has been modified since. To avoid this
4218 problem we treat env==NULL as meaning 'use the default'
4222 env_is_not_environ = env != environ;
4223 if (env_is_not_environ
4224 # ifdef USE_ITHREADS
4225 && PL_curinterp == aTHX
4234 for (; *env; env++) {
4237 if (!(s = strchr(old_var,'=')) || s == old_var)
4240 #if defined(MSDOS) && !defined(DJGPP)
4242 (void)strupr(old_var);
4245 sv = newSVpv(s+1, 0);
4246 (void)hv_store(hv, old_var, s - old_var, sv, 0);
4247 if (env_is_not_environ)
4251 #endif /* USE_ENVIRON_ARRAY */
4252 #endif /* !PERL_MICRO */
4256 /* touch @F array to prevent spurious warnings 20020415 MJD */
4258 (void) get_av("main::F", GV_ADD | GV_ADDMULTI);
4263 S_init_perllib(pTHX)
4267 const char *perl5lib = NULL;
4270 #if defined(WIN32) && !defined(PERL_IS_MINIPERL)
4274 if (!TAINTING_get) {
4276 perl5lib = PerlEnv_getenv("PERL5LIB");
4278 * It isn't possible to delete an environment variable with
4279 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4280 * case we treat PERL5LIB as undefined if it has a zero-length value.
4282 #if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
4283 if (perl5lib && *perl5lib != '\0')
4287 incpush_use_sep(perl5lib, 0, INCPUSH_ADD_SUB_DIRS);
4289 s = PerlEnv_getenv("PERLLIB");
4291 incpush_use_sep(s, 0, 0);
4294 /* Treat PERL5?LIB as a possible search list logical name -- the
4295 * "natural" VMS idiom for a Unix path string. We allow each
4296 * element to be a set of |-separated directories for compatibility.
4300 if (my_trnlnm("PERL5LIB",buf,0))
4302 incpush_use_sep(buf, 0, INCPUSH_ADD_SUB_DIRS);
4303 } while (my_trnlnm("PERL5LIB",buf,++idx));
4305 while (my_trnlnm("PERLLIB",buf,idx++))
4306 incpush_use_sep(buf, 0, 0);
4311 #ifndef PERL_IS_MINIPERL
4312 /* miniperl gets just -I..., the split of $ENV{PERL5LIB}, and "." in @INC
4313 (and not the architecture specific directories from $ENV{PERL5LIB}) */
4315 /* Use the ~-expanded versions of APPLLIB (undocumented),
4316 SITEARCH, SITELIB, VENDORARCH, VENDORLIB, ARCHLIB and PRIVLIB
4319 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP),
4320 INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4324 /* sitearch is always relative to sitelib on Windows for
4325 * DLL-based path intuition to work correctly */
4326 # if !defined(WIN32)
4327 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITEARCH_EXP),
4328 INCPUSH_CAN_RELOCATE);
4334 /* this picks up sitearch as well */
4335 s = win32_get_sitelib(PERL_FS_VERSION, &len);
4337 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4339 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_EXP), INCPUSH_CAN_RELOCATE);
4343 #ifdef PERL_VENDORARCH_EXP
4344 /* vendorarch is always relative to vendorlib on Windows for
4345 * DLL-based path intuition to work correctly */
4346 # if !defined(WIN32)
4347 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORARCH_EXP),
4348 INCPUSH_CAN_RELOCATE);
4352 #ifdef PERL_VENDORLIB_EXP
4354 /* this picks up vendorarch as well */
4355 s = win32_get_vendorlib(PERL_FS_VERSION, &len);
4357 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4359 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_EXP),
4360 INCPUSH_CAN_RELOCATE);
4365 S_incpush_use_sep(aTHX_ STR_WITH_LEN(ARCHLIB_EXP), INCPUSH_CAN_RELOCATE);
4369 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
4373 s = win32_get_privlib(PERL_FS_VERSION, &len);
4375 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4378 S_incpush_use_sep(aTHX_ PRIVLIB_EXP, 0, INCPUSH_CAN_RELOCATE);
4380 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PRIVLIB_EXP), INCPUSH_CAN_RELOCATE);
4384 #ifdef PERL_OTHERLIBDIRS
4385 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS),
4386 INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_NOT_BASEDIR
4387 |INCPUSH_CAN_RELOCATE);
4390 if (!TAINTING_get) {
4393 * It isn't possible to delete an environment variable with
4394 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4395 * case we treat PERL5LIB as undefined if it has a zero-length value.
4397 #if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
4398 if (perl5lib && *perl5lib != '\0')
4402 incpush_use_sep(perl5lib, 0,
4403 INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
4405 /* Treat PERL5?LIB as a possible search list logical name -- the
4406 * "natural" VMS idiom for a Unix path string. We allow each
4407 * element to be a set of |-separated directories for compatibility.
4411 if (my_trnlnm("PERL5LIB",buf,0))
4413 incpush_use_sep(buf, 0,
4414 INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
4415 } while (my_trnlnm("PERL5LIB",buf,++idx));
4419 /* Use the ~-expanded versions of APPLLIB (undocumented),
4420 SITELIB and VENDORLIB for older versions
4423 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP), INCPUSH_ADD_OLD_VERS
4424 |INCPUSH_NOT_BASEDIR|INCPUSH_CAN_RELOCATE);
4427 #if defined(SITELIB_STEM) && defined(PERL_INC_VERSION_LIST)
4428 /* Search for version-specific dirs below here */
4429 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_STEM),
4430 INCPUSH_ADD_OLD_VERS|INCPUSH_CAN_RELOCATE);
4434 #if defined(PERL_VENDORLIB_STEM) && defined(PERL_INC_VERSION_LIST)
4435 /* Search for version-specific dirs below here */
4436 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_STEM),
4437 INCPUSH_ADD_OLD_VERS|INCPUSH_CAN_RELOCATE);
4440 #ifdef PERL_OTHERLIBDIRS
4441 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS),
4442 INCPUSH_ADD_OLD_VERS|INCPUSH_ADD_ARCHONLY_SUB_DIRS
4443 |INCPUSH_CAN_RELOCATE);
4445 #endif /* !PERL_IS_MINIPERL */
4448 S_incpush(aTHX_ STR_WITH_LEN("."), 0);
4451 #if defined(DOSISH) || defined(__SYMBIAN32__)
4452 # define PERLLIB_SEP ';'
4455 # define PERLLIB_SEP '|'
4457 # define PERLLIB_SEP ':'
4460 #ifndef PERLLIB_MANGLE
4461 # define PERLLIB_MANGLE(s,n) (s)
4464 #ifndef PERL_IS_MINIPERL
4465 /* Push a directory onto @INC if it exists.
4466 Generate a new SV if we do this, to save needing to copy the SV we push
4469 S_incpush_if_exists(pTHX_ AV *const av, SV *dir, SV *const stem)
4474 PERL_ARGS_ASSERT_INCPUSH_IF_EXISTS;
4476 if (PerlLIO_stat(SvPVX_const(dir), &tmpstatbuf) >= 0 &&
4477 S_ISDIR(tmpstatbuf.st_mode)) {
4479 dir = newSVsv(stem);
4481 /* Truncate dir back to stem. */
4482 SvCUR_set(dir, SvCUR(stem));
4489 S_mayberelocate(pTHX_ const char *const dir, STRLEN len, U32 flags)
4491 const U8 canrelocate = (U8)flags & INCPUSH_CAN_RELOCATE;
4494 PERL_ARGS_ASSERT_MAYBERELOCATE;
4498 /* I am not convinced that this is valid when PERLLIB_MANGLE is
4499 defined to so something (in os2/os2.c), but the code has been
4500 this way, ignoring any possible changed of length, since
4501 760ac839baf413929cd31cc32ffd6dba6b781a81 (5.003_02) so I'll leave
4503 libdir = newSVpvn(PERLLIB_MANGLE(dir, len), len);
4505 libdir = newSVpv(PERLLIB_MANGLE(dir, 0), 0);
4512 if ((unix = tounixspec_ts(SvPV(libdir,len),NULL)) != NULL) {
4514 while (unix[len-1] == '/') len--; /* Cosmetic */
4515 sv_usepvn(libdir,unix,len);
4518 PerlIO_printf(Perl_error_log,
4519 "Failed to unixify @INC element \"%s\"\n",
4520 SvPV_nolen_const(libdir));
4524 /* Do the if() outside the #ifdef to avoid warnings about an unused
4527 #ifdef PERL_RELOCATABLE_INC
4529 * Relocatable include entries are marked with a leading .../
4532 * 0: Remove that leading ".../"
4533 * 1: Remove trailing executable name (anything after the last '/')
4534 * from the perl path to give a perl prefix
4536 * While the @INC element starts "../" and the prefix ends with a real
4537 * directory (ie not . or ..) chop that real directory off the prefix
4538 * and the leading "../" from the @INC element. ie a logical "../"
4540 * Finally concatenate the prefix and the remainder of the @INC element
4541 * The intent is that /usr/local/bin/perl and .../../lib/perl5
4542 * generates /usr/local/lib/perl5
4544 const char *libpath = SvPVX(libdir);
4545 STRLEN libpath_len = SvCUR(libdir);
4546 if (libpath_len >= 4 && memEQ (libpath, ".../", 4)) {
4548 SV * const caret_X = get_sv("\030", 0);
4549 /* Going to use the SV just as a scratch buffer holding a C
4555 /* $^X is *the* source of taint if tainting is on, hence
4556 SvPOK() won't be true. */
4558 assert(SvPOKp(caret_X));
4559 prefix_sv = newSVpvn_flags(SvPVX(caret_X), SvCUR(caret_X),
4561 /* Firstly take off the leading .../
4562 If all else fail we'll do the paths relative to the current
4564 sv_chop(libdir, libpath + 4);
4565 /* Don't use SvPV as we're intentionally bypassing taining,
4566 mortal copies that the mg_get of tainting creates, and
4567 corruption that seems to come via the save stack.
4568 I guess that the save stack isn't correctly set up yet. */
4569 libpath = SvPVX(libdir);
4570 libpath_len = SvCUR(libdir);
4572 /* This would work more efficiently with memrchr, but as it's
4573 only a GNU extension we'd need to probe for it and
4574 implement our own. Not hard, but maybe not worth it? */
4576 prefix = SvPVX(prefix_sv);
4577 lastslash = strrchr(prefix, '/');
4579 /* First time in with the *lastslash = '\0' we just wipe off
4580 the trailing /perl from (say) /usr/foo/bin/perl
4584 while ((*lastslash = '\0'), /* Do that, come what may. */
4585 (libpath_len >= 3 && memEQ(libpath, "../", 3)
4586 && (lastslash = strrchr(prefix, '/')))) {
4587 if (lastslash[1] == '\0'
4588 || (lastslash[1] == '.'
4589 && (lastslash[2] == '/' /* ends "/." */
4590 || (lastslash[2] == '/'
4591 && lastslash[3] == '/' /* or "/.." */
4593 /* Prefix ends "/" or "/." or "/..", any of which
4594 are fishy, so don't do any more logical cleanup.
4598 /* Remove leading "../" from path */
4601 /* Next iteration round the loop removes the last
4602 directory name from prefix by writing a '\0' in
4603 the while clause. */
4605 /* prefix has been terminated with a '\0' to the correct
4606 length. libpath points somewhere into the libdir SV.
4607 We need to join the 2 with '/' and drop the result into
4609 tempsv = Perl_newSVpvf(aTHX_ "%s/%s", prefix, libpath);
4610 SvREFCNT_dec(libdir);
4611 /* And this is the new libdir. */
4614 (PerlProc_getuid() != PerlProc_geteuid() ||
4615 PerlProc_getgid() != PerlProc_getegid())) {
4616 /* Need to taint relocated paths if running set ID */
4617 SvTAINTED_on(libdir);
4620 SvREFCNT_dec(prefix_sv);
4628 S_incpush(pTHX_ const char *const dir, STRLEN len, U32 flags)
4631 #ifndef PERL_IS_MINIPERL
4632 const U8 using_sub_dirs
4633 = (U8)flags & (INCPUSH_ADD_VERSIONED_SUB_DIRS
4634 |INCPUSH_ADD_ARCHONLY_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
4635 const U8 add_versioned_sub_dirs
4636 = (U8)flags & INCPUSH_ADD_VERSIONED_SUB_DIRS;
4637 const U8 add_archonly_sub_dirs
4638 = (U8)flags & INCPUSH_ADD_ARCHONLY_SUB_DIRS;
4639 #ifdef PERL_INC_VERSION_LIST
4640 const U8 addoldvers = (U8)flags & INCPUSH_ADD_OLD_VERS;
4643 const U8 unshift = (U8)flags & INCPUSH_UNSHIFT;
4644 const U8 push_basedir = (flags & INCPUSH_NOT_BASEDIR) ? 0 : 1;
4645 AV *const inc = GvAVn(PL_incgv);
4647 PERL_ARGS_ASSERT_INCPUSH;
4650 /* Could remove this vestigial extra block, if we don't mind a lot of
4651 re-indenting diff noise. */
4653 SV *const libdir = mayberelocate(dir, len, flags);
4654 /* Change 20189146be79a0596543441fa369c6bf7f85103f, to fix RT#6665,
4655 arranged to unshift #! line -I onto the front of @INC. However,
4656 -I can add version and architecture specific libraries, and they
4657 need to go first. The old code assumed that it was always
4658 pushing. Hence to make it work, need to push the architecture
4659 (etc) libraries onto a temporary array, then "unshift" that onto
4660 the front of @INC. */
4661 #ifndef PERL_IS_MINIPERL
4662 AV *const av = (using_sub_dirs) ? (unshift ? newAV() : inc) : NULL;
4665 * BEFORE pushing libdir onto @INC we may first push version- and
4666 * archname-specific sub-directories.
4668 if (using_sub_dirs) {
4669 SV *subdir = newSVsv(libdir);
4670 #ifdef PERL_INC_VERSION_LIST
4671 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
4672 const char * const incverlist[] = { PERL_INC_VERSION_LIST };
4673 const char * const *incver;
4676 if (add_versioned_sub_dirs) {
4677 /* .../version/archname if -d .../version/archname */
4678 sv_catpvs(subdir, "/" PERL_FS_VERSION "/" ARCHNAME);
4679 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4681 /* .../version if -d .../version */
4682 sv_catpvs(subdir, "/" PERL_FS_VERSION);
4683 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4686 #ifdef PERL_INC_VERSION_LIST
4688 for (incver = incverlist; *incver; incver++) {
4689 /* .../xxx if -d .../xxx */
4690 Perl_sv_catpvf(aTHX_ subdir, "/%s", *incver);
4691 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4696 if (add_archonly_sub_dirs) {
4697 /* .../archname if -d .../archname */
4698 sv_catpvs(subdir, "/" ARCHNAME);
4699 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4703 assert (SvREFCNT(subdir) == 1);
4704 SvREFCNT_dec(subdir);
4706 #endif /* !PERL_IS_MINIPERL */
4707 /* finally add this lib directory at the end of @INC */
4709 #ifdef PERL_IS_MINIPERL
4710 const U32 extra = 0;
4712 U32 extra = av_len(av) + 1;
4714 av_unshift(inc, extra + push_basedir);
4716 av_store(inc, extra, libdir);
4717 #ifndef PERL_IS_MINIPERL
4719 /* av owns a reference, av_store() expects to be donated a
4720 reference, and av expects to be sane when it's cleared.
4721 If I wanted to be naughty and wrong, I could peek inside the
4722 implementation of av_clear(), realise that it uses
4723 SvREFCNT_dec() too, so av's array could be a run of NULLs,
4724 and so directly steal from it (with a memcpy() to inc, and
4725 then memset() to NULL them out. But people copy code from the
4726 core expecting it to be best practise, so let's use the API.
4727 Although studious readers will note that I'm not checking any
4729 av_store(inc, extra, SvREFCNT_inc(*av_fetch(av, extra, FALSE)));
4734 else if (push_basedir) {
4735 av_push(inc, libdir);
4738 if (!push_basedir) {
4739 assert (SvREFCNT(libdir) == 1);
4740 SvREFCNT_dec(libdir);
4746 S_incpush_use_sep(pTHX_ const char *p, STRLEN len, U32 flags)
4750 /* This logic has been broken out from S_incpush(). It may be possible to
4753 PERL_ARGS_ASSERT_INCPUSH_USE_SEP;
4755 /* perl compiled with -DPERL_RELOCATABLE_INCPUSH will ignore the len
4756 * argument to incpush_use_sep. This allows creation of relocatable
4757 * Perl distributions that patch the binary at install time. Those
4758 * distributions will have to provide their own relocation tools; this
4759 * is not a feature otherwise supported by core Perl.
4761 #ifndef PERL_RELOCATABLE_INCPUSH
4768 /* Break at all separators */
4769 while ((s = (const char*)memchr(p, PERLLIB_SEP, end - p))) {
4771 /* skip any consecutive separators */
4773 /* Uncomment the next line for PATH semantics */
4774 /* But you'll need to write tests */
4775 /* av_push(GvAVn(PL_incgv), newSVpvs(".")); */
4777 incpush(p, (STRLEN)(s - p), flags);
4782 incpush(p, (STRLEN)(end - p), flags);
4787 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
4791 volatile const line_t oldline = PL_curcop ? CopLINE(PL_curcop) : 0;
4797 PERL_ARGS_ASSERT_CALL_LIST;
4799 while (av_len(paramList) >= 0) {
4800 cv = MUTABLE_CV(av_shift(paramList));
4802 if (paramList == PL_beginav) {
4803 /* save PL_beginav for compiler */
4804 Perl_av_create_and_push(aTHX_ &PL_beginav_save, MUTABLE_SV(cv));
4806 else if (paramList == PL_checkav) {
4807 /* save PL_checkav for compiler */
4808 Perl_av_create_and_push(aTHX_ &PL_checkav_save, MUTABLE_SV(cv));
4810 else if (paramList == PL_unitcheckav) {
4811 /* save PL_unitcheckav for compiler */
4812 Perl_av_create_and_push(aTHX_ &PL_unitcheckav_save, MUTABLE_SV(cv));
4823 PL_madskills |= 16384;
4828 PL_madskills &= ~16384;
4831 (void)SvPV_const(atsv, len);
4833 PL_curcop = &PL_compiling;
4834 CopLINE_set(PL_curcop, oldline);
4835 if (paramList == PL_beginav)
4836 sv_catpvs(atsv, "BEGIN failed--compilation aborted");
4838 Perl_sv_catpvf(aTHX_ atsv,