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 */
245 /* set read-only and try to insure than we wont see REFCNT==0
248 SvREADONLY_on(&PL_sv_undef);
249 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
251 sv_setpv(&PL_sv_no,PL_No);
252 /* value lookup in void context - happens to have the side effect
253 of caching the numeric forms. However, as &PL_sv_no doesn't contain
254 a string that is a valid numer, we have to turn the public flags by
260 SvREADONLY_on(&PL_sv_no);
261 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
263 sv_setpv(&PL_sv_yes,PL_Yes);
266 SvREADONLY_on(&PL_sv_yes);
267 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
269 SvREADONLY_on(&PL_sv_placeholder);
270 SvREFCNT(&PL_sv_placeholder) = (~(U32)0)/2;
272 PL_sighandlerp = (Sighandler_t) Perl_sighandler;
273 #ifdef PERL_USES_PL_PIDSTATUS
274 PL_pidstatus = newHV();
277 PL_rs = newSVpvs("\n");
287 SET_NUMERIC_STANDARD();
289 #if defined(LOCAL_PATCH_COUNT)
290 PL_localpatches = local_patches; /* For possible -v */
293 #ifdef HAVE_INTERP_INTERN
297 PerlIO_init(aTHX); /* Hook to IO system */
299 PL_fdpid = newAV(); /* for remembering popen pids by fd */
300 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
301 PL_errors = newSVpvs("");
302 sv_setpvs(PERL_DEBUG_PAD(0), ""); /* For regex debugging. */
303 sv_setpvs(PERL_DEBUG_PAD(1), ""); /* ext/re needs these */
304 sv_setpvs(PERL_DEBUG_PAD(2), ""); /* even without DEBUGGING. */
306 /* First entry is a list of empty elements. It needs to be initialised
307 else all hell breaks loose in S_find_uninit_var(). */
308 Perl_av_create_and_push(aTHX_ &PL_regex_padav, newSVpvs(""));
309 PL_regex_pad = AvARRAY(PL_regex_padav);
310 Newxz(PL_stashpad, PL_stashpadmax, HV *);
312 #ifdef USE_REENTRANT_API
313 Perl_reentrant_init(aTHX);
316 /* Note that strtab is a rather special HV. Assumptions are made
317 about not iterating on it, and not adding tie magic to it.
318 It is properly deallocated in perl_destruct() */
321 HvSHAREKEYS_off(PL_strtab); /* mandatory */
322 hv_ksplit(PL_strtab, 512);
324 #if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
325 _dyld_lookup_and_bind
326 ("__environ", (unsigned long *) &environ_pointer, NULL);
330 # ifdef USE_ENVIRON_ARRAY
331 PL_origenviron = environ;
335 /* Use sysconf(_SC_CLK_TCK) if available, if not
336 * available or if the sysconf() fails, use the HZ.
337 * BeOS has those, but returns the wrong value.
338 * The HZ if not originally defined has been by now
339 * been defined as CLK_TCK, if available. */
340 #if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK) && !defined(__BEOS__)
341 PL_clocktick = sysconf(_SC_CLK_TCK);
342 if (PL_clocktick <= 0)
346 PL_stashcache = newHV();
348 PL_patchlevel = newSVpvs("v" PERL_VERSION_STRING);
349 PL_apiversion = newSVpvs("v" PERL_API_VERSION_STRING);
352 if (!PL_mmap_page_size) {
353 #if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
355 SETERRNO(0, SS_NORMAL);
357 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
359 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
361 if ((long) PL_mmap_page_size < 0) {
363 SV * const error = ERRSV;
364 SvUPGRADE(error, SVt_PV);
365 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
368 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
372 # ifdef HAS_GETPAGESIZE
373 PL_mmap_page_size = getpagesize();
375 # if defined(I_SYS_PARAM) && defined(PAGESIZE)
376 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
380 if (PL_mmap_page_size <= 0)
381 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
382 (IV) PL_mmap_page_size);
384 #endif /* HAS_MMAP */
386 #if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
387 PL_timesbase.tms_utime = 0;
388 PL_timesbase.tms_stime = 0;
389 PL_timesbase.tms_cutime = 0;
390 PL_timesbase.tms_cstime = 0;
393 PL_osname = Perl_savepvn(aTHX_ STR_WITH_LEN(OSNAME));
395 PL_registered_mros = newHV();
396 /* Start with 1 bucket, for DFS. It's unlikely we'll need more. */
397 HvMAX(PL_registered_mros) = 0;
403 =for apidoc nothreadhook
405 Stub that provides thread hook for perl_destruct when there are
412 Perl_nothreadhook(pTHX)
418 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
420 Perl_dump_sv_child(pTHX_ SV *sv)
423 const int sock = PL_dumper_fd;
424 const int debug_fd = PerlIO_fileno(Perl_debug_log);
425 union control_un control;
428 struct cmsghdr *cmptr;
430 unsigned char buffer[256];
432 PERL_ARGS_ASSERT_DUMP_SV_CHILD;
434 if(sock == -1 || debug_fd == -1)
437 PerlIO_flush(Perl_debug_log);
439 /* All these shenanigans are to pass a file descriptor over to our child for
440 it to dump out to. We can't let it hold open the file descriptor when it
441 forks, as the file descriptor it will dump to can turn out to be one end
442 of pipe that some other process will wait on for EOF. (So as it would
443 be open, the wait would be forever.) */
445 msg.msg_control = control.control;
446 msg.msg_controllen = sizeof(control.control);
447 /* We're a connected socket so we don't need a destination */
453 cmptr = CMSG_FIRSTHDR(&msg);
454 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
455 cmptr->cmsg_level = SOL_SOCKET;
456 cmptr->cmsg_type = SCM_RIGHTS;
457 *((int *)CMSG_DATA(cmptr)) = 1;
459 vec[0].iov_base = (void*)&sv;
460 vec[0].iov_len = sizeof(sv);
461 got = sendmsg(sock, &msg, 0);
464 perror("Debug leaking scalars parent sendmsg failed");
467 if(got < sizeof(sv)) {
468 perror("Debug leaking scalars parent short sendmsg");
472 /* Return protocol is
474 unsigned char: length of location string (0 for empty)
475 unsigned char*: string (not terminated)
477 vec[0].iov_base = (void*)&returned_errno;
478 vec[0].iov_len = sizeof(returned_errno);
479 vec[1].iov_base = buffer;
482 got = readv(sock, vec, 2);
485 perror("Debug leaking scalars parent read failed");
486 PerlIO_flush(PerlIO_stderr());
489 if(got < sizeof(returned_errno) + 1) {
490 perror("Debug leaking scalars parent short read");
491 PerlIO_flush(PerlIO_stderr());
496 got = read(sock, buffer + 1, *buffer);
498 perror("Debug leaking scalars parent read 2 failed");
499 PerlIO_flush(PerlIO_stderr());
504 perror("Debug leaking scalars parent short read 2");
505 PerlIO_flush(PerlIO_stderr());
510 if (returned_errno || *buffer) {
511 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
512 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
513 returned_errno, strerror(returned_errno));
519 =for apidoc perl_destruct
521 Shuts down a Perl interpreter. See L<perlembed>.
530 VOL signed char destruct_level; /* see possible values in intrpvar.h */
532 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
536 PERL_ARGS_ASSERT_PERL_DESTRUCT;
538 PERL_UNUSED_ARG(my_perl);
541 assert(PL_scopestack_ix == 1);
543 /* wait for all pseudo-forked children to finish */
544 PERL_WAIT_FOR_CHILDREN;
546 destruct_level = PL_perl_destruct_level;
549 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
551 const int i = atoi(s);
552 if (destruct_level < i)
558 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
564 if (PL_endav && !PL_minus_c) {
565 PERL_SET_PHASE(PERL_PHASE_END);
566 call_list(PL_scopestack_ix, PL_endav);
572 assert(PL_scopestack_ix == 0);
574 /* Need to flush since END blocks can produce output */
577 if (PL_threadhook(aTHX)) {
578 /* Threads hook has vetoed further cleanup */
579 PL_veto_cleanup = TRUE;
583 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
584 if (destruct_level != 0) {
585 /* Fork here to create a child. Our child's job is to preserve the
586 state of scalars prior to destruction, so that we can instruct it
587 to dump any scalars that we later find have leaked.
588 There's no subtlety in this code - it assumes POSIX, and it doesn't
592 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
593 perror("Debug leaking scalars socketpair failed");
599 perror("Debug leaking scalars fork failed");
603 /* We are the child */
604 const int sock = fd[1];
605 const int debug_fd = PerlIO_fileno(Perl_debug_log);
608 /* Our success message is an integer 0, and a char 0 */
609 static const char success[sizeof(int) + 1] = {0};
613 /* We need to close all other file descriptors otherwise we end up
614 with interesting hangs, where the parent closes its end of a
615 pipe, and sits waiting for (another) child to terminate. Only
616 that child never terminates, because it never gets EOF, because
617 we also have the far end of the pipe open. We even need to
618 close the debugging fd, because sometimes it happens to be one
619 end of a pipe, and a process is waiting on the other end for
620 EOF. Normally it would be closed at some point earlier in
621 destruction, but if we happen to cause the pipe to remain open,
622 EOF never occurs, and we get an infinite hang. Hence all the
623 games to pass in a file descriptor if it's actually needed. */
625 f = sysconf(_SC_OPEN_MAX);
627 where = "sysconf failed";
638 union control_un control;
641 struct cmsghdr *cmptr;
645 msg.msg_control = control.control;
646 msg.msg_controllen = sizeof(control.control);
647 /* We're a connected socket so we don't need a source */
651 msg.msg_iovlen = sizeof(vec)/sizeof(vec[0]);
653 vec[0].iov_base = (void*)⌖
654 vec[0].iov_len = sizeof(target);
656 got = recvmsg(sock, &msg, 0);
661 where = "recv failed";
664 if(got < sizeof(target)) {
665 where = "short recv";
669 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
673 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
674 where = "wrong cmsg_len";
677 if(cmptr->cmsg_level != SOL_SOCKET) {
678 where = "wrong cmsg_level";
681 if(cmptr->cmsg_type != SCM_RIGHTS) {
682 where = "wrong cmsg_type";
686 got_fd = *(int*)CMSG_DATA(cmptr);
687 /* For our last little bit of trickery, put the file descriptor
688 back into Perl_debug_log, as if we never actually closed it
690 if(got_fd != debug_fd) {
691 if (dup2(got_fd, debug_fd) == -1) {
698 PerlIO_flush(Perl_debug_log);
700 got = write(sock, &success, sizeof(success));
703 where = "write failed";
706 if(got < sizeof(success)) {
707 where = "short write";
714 int send_errno = errno;
715 unsigned char length = (unsigned char) strlen(where);
716 struct iovec failure[3] = {
717 {(void*)&send_errno, sizeof(send_errno)},
719 {(void*)where, length}
721 int got = writev(sock, failure, 3);
722 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
723 in the parent if we try to read from the socketpair after the
724 child has exited, even if there was data to read.
725 So sleep a bit to give the parent a fighting chance of
728 _exit((got == -1) ? errno : 0);
732 PL_dumper_fd = fd[0];
737 /* We must account for everything. */
739 /* Destroy the main CV and syntax tree */
740 /* Set PL_curcop now, because destroying ops can cause new SVs
741 to be generated in Perl_pad_swipe, and when running with
742 -DDEBUG_LEAKING_SCALARS they expect PL_curcop to point to a valid
743 op from which the filename structure member is copied. */
744 PL_curcop = &PL_compiling;
746 /* ensure comppad/curpad to refer to main's pad */
747 if (CvPADLIST(PL_main_cv)) {
748 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
750 op_free(PL_main_root);
753 PL_main_start = NULL;
754 /* note that PL_main_cv isn't usually actually freed at this point,
755 * due to the CvOUTSIDE refs from subs compiled within it. It will
756 * get freed once all the subs are freed in sv_clean_all(), for
757 * destruct_level > 0 */
758 SvREFCNT_dec(PL_main_cv);
760 PERL_SET_PHASE(PERL_PHASE_DESTRUCT);
762 /* Tell PerlIO we are about to tear things apart in case
763 we have layers which are using resources that should
767 PerlIO_destruct(aTHX);
769 if (PL_sv_objcount) {
771 * Try to destruct global references. We do this first so that the
772 * destructors and destructees still exist. Some sv's might remain.
773 * Non-referenced objects are on their own.
779 /* unhook hooks which will soon be, or use, destroyed data */
780 SvREFCNT_dec(PL_warnhook);
782 SvREFCNT_dec(PL_diehook);
785 /* call exit list functions */
786 while (PL_exitlistlen-- > 0)
787 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
789 Safefree(PL_exitlist);
794 SvREFCNT_dec(PL_registered_mros);
796 /* jettison our possibly duplicated environment */
797 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
798 * so we certainly shouldn't free it here
801 #if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
802 if (environ != PL_origenviron && !PL_use_safe_putenv
804 /* only main thread can free environ[0] contents */
805 && PL_curinterp == aTHX
811 for (i = 0; environ[i]; i++)
812 safesysfree(environ[i]);
814 /* Must use safesysfree() when working with environ. */
815 safesysfree(environ);
817 environ = PL_origenviron;
820 #endif /* !PERL_MICRO */
822 if (destruct_level == 0) {
824 DEBUG_P(debprofdump());
826 #if defined(PERLIO_LAYERS)
827 /* No more IO - including error messages ! */
828 PerlIO_cleanup(aTHX);
831 CopFILE_free(&PL_compiling);
833 /* The exit() function will do everything that needs doing. */
838 /* the syntax tree is shared between clones
839 * so op_free(PL_main_root) only ReREFCNT_dec's
840 * REGEXPs in the parent interpreter
841 * we need to manually ReREFCNT_dec for the clones
844 I32 i = AvFILLp(PL_regex_padav);
845 SV **ary = AvARRAY(PL_regex_padav);
848 SvREFCNT_dec(ary[i]);
849 ary[i] = &PL_sv_undef;
852 Safefree(PL_stashpad);
856 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
857 PL_stashcache = NULL;
859 /* loosen bonds of global variables */
861 /* XXX can PL_parser still be non-null here? */
862 if(PL_parser && PL_parser->rsfp) {
863 (void)PerlIO_close(PL_parser->rsfp);
864 PL_parser->rsfp = NULL;
868 Safefree(PL_splitstr);
878 PL_doswitches = FALSE;
879 PL_dowarn = G_WARN_OFF;
880 PL_sawampersand = FALSE; /* must save all match strings */
883 Safefree(PL_inplace);
885 SvREFCNT_dec(PL_patchlevel);
886 SvREFCNT_dec(PL_apiversion);
889 SvREFCNT_dec(PL_e_script);
895 /* magical thingies */
897 SvREFCNT_dec(PL_ofsgv); /* *, */
900 SvREFCNT_dec(PL_ors_sv); /* $\ */
903 SvREFCNT_dec(PL_rs); /* $/ */
906 Safefree(PL_osname); /* $^O */
909 SvREFCNT_dec(PL_statname);
913 /* defgv, aka *_ should be taken care of elsewhere */
916 Safefree(PL_efloatbuf);
920 /* startup and shutdown function lists */
921 SvREFCNT_dec(PL_beginav);
922 SvREFCNT_dec(PL_beginav_save);
923 SvREFCNT_dec(PL_endav);
924 SvREFCNT_dec(PL_checkav);
925 SvREFCNT_dec(PL_checkav_save);
926 SvREFCNT_dec(PL_unitcheckav);
927 SvREFCNT_dec(PL_unitcheckav_save);
928 SvREFCNT_dec(PL_initav);
930 PL_beginav_save = NULL;
933 PL_checkav_save = NULL;
934 PL_unitcheckav = NULL;
935 PL_unitcheckav_save = NULL;
938 /* shortcuts just get cleared */
947 PL_last_in_gv = NULL;
959 SvREFCNT_dec(PL_argvout_stack);
960 PL_argvout_stack = NULL;
962 SvREFCNT_dec(PL_modglobal);
964 SvREFCNT_dec(PL_preambleav);
965 PL_preambleav = NULL;
966 SvREFCNT_dec(PL_subname);
968 #ifdef PERL_USES_PL_PIDSTATUS
969 SvREFCNT_dec(PL_pidstatus);
972 SvREFCNT_dec(PL_toptarget);
974 SvREFCNT_dec(PL_bodytarget);
975 PL_bodytarget = NULL;
976 PL_formtarget = NULL;
978 /* free locale stuff */
979 #ifdef USE_LOCALE_COLLATE
980 Safefree(PL_collation_name);
981 PL_collation_name = NULL;
984 #ifdef USE_LOCALE_NUMERIC
985 Safefree(PL_numeric_name);
986 PL_numeric_name = NULL;
987 SvREFCNT_dec(PL_numeric_radix_sv);
988 PL_numeric_radix_sv = NULL;
991 /* clear utf8 character classes */
992 SvREFCNT_dec(PL_utf8_alnum);
993 SvREFCNT_dec(PL_utf8_alpha);
994 SvREFCNT_dec(PL_utf8_space);
995 SvREFCNT_dec(PL_utf8_graph);
996 SvREFCNT_dec(PL_utf8_digit);
997 SvREFCNT_dec(PL_utf8_upper);
998 SvREFCNT_dec(PL_utf8_lower);
999 SvREFCNT_dec(PL_utf8_print);
1000 SvREFCNT_dec(PL_utf8_punct);
1001 SvREFCNT_dec(PL_utf8_xdigit);
1002 SvREFCNT_dec(PL_utf8_mark);
1003 SvREFCNT_dec(PL_utf8_toupper);
1004 SvREFCNT_dec(PL_utf8_totitle);
1005 SvREFCNT_dec(PL_utf8_tolower);
1006 SvREFCNT_dec(PL_utf8_tofold);
1007 SvREFCNT_dec(PL_utf8_idstart);
1008 SvREFCNT_dec(PL_utf8_idcont);
1009 SvREFCNT_dec(PL_utf8_foldclosures);
1010 PL_utf8_alnum = NULL;
1011 PL_utf8_alpha = NULL;
1012 PL_utf8_space = NULL;
1013 PL_utf8_graph = NULL;
1014 PL_utf8_digit = NULL;
1015 PL_utf8_upper = NULL;
1016 PL_utf8_lower = NULL;
1017 PL_utf8_print = NULL;
1018 PL_utf8_punct = NULL;
1019 PL_utf8_xdigit = NULL;
1020 PL_utf8_mark = NULL;
1021 PL_utf8_toupper = NULL;
1022 PL_utf8_totitle = NULL;
1023 PL_utf8_tolower = NULL;
1024 PL_utf8_tofold = NULL;
1025 PL_utf8_idstart = NULL;
1026 PL_utf8_idcont = NULL;
1027 PL_utf8_foldclosures = NULL;
1029 if (!specialWARN(PL_compiling.cop_warnings))
1030 PerlMemShared_free(PL_compiling.cop_warnings);
1031 PL_compiling.cop_warnings = NULL;
1032 cophh_free(CopHINTHASH_get(&PL_compiling));
1033 CopHINTHASH_set(&PL_compiling, cophh_new_empty());
1034 CopFILE_free(&PL_compiling);
1036 /* Prepare to destruct main symbol table. */
1039 /* break ref loop *:: <=> %:: */
1040 (void)hv_delete(hv, "main::", 6, G_DISCARD);
1043 SvREFCNT_dec(PL_curstname);
1044 PL_curstname = NULL;
1046 /* clear queued errors */
1047 SvREFCNT_dec(PL_errors);
1050 SvREFCNT_dec(PL_isarev);
1053 if (destruct_level >= 2) {
1054 if (PL_scopestack_ix != 0)
1055 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1056 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1057 (long)PL_scopestack_ix);
1058 if (PL_savestack_ix != 0)
1059 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1060 "Unbalanced saves: %ld more saves than restores\n",
1061 (long)PL_savestack_ix);
1062 if (PL_tmps_floor != -1)
1063 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1064 (long)PL_tmps_floor + 1);
1065 if (cxstack_ix != -1)
1066 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1067 (long)cxstack_ix + 1);
1071 SvREFCNT_dec(PL_regex_padav);
1072 PL_regex_padav = NULL;
1073 PL_regex_pad = NULL;
1076 #ifdef PERL_IMPLICIT_CONTEXT
1077 /* the entries in this list are allocated via SV PVX's, so get freed
1078 * in sv_clean_all */
1079 Safefree(PL_my_cxt_list);
1082 /* Now absolutely destruct everything, somehow or other, loops or no. */
1084 /* the 2 is for PL_fdpid and PL_strtab */
1085 while (sv_clean_all() > 2)
1088 AvREAL_off(PL_fdpid); /* no surviving entries */
1089 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
1092 #ifdef HAVE_INTERP_INTERN
1096 /* Destruct the global string table. */
1098 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1099 * so that sv_free() won't fail on them.
1100 * Now that the global string table is using a single hunk of memory
1101 * for both HE and HEK, we either need to explicitly unshare it the
1102 * correct way, or actually free things here.
1105 const I32 max = HvMAX(PL_strtab);
1106 HE * const * const array = HvARRAY(PL_strtab);
1107 HE *hent = array[0];
1110 if (hent && ckWARN_d(WARN_INTERNAL)) {
1111 HE * const next = HeNEXT(hent);
1112 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
1113 "Unbalanced string table refcount: (%ld) for \"%s\"",
1114 (long)hent->he_valu.hent_refcount, HeKEY(hent));
1121 hent = array[riter];
1126 HvARRAY(PL_strtab) = 0;
1127 HvTOTALKEYS(PL_strtab) = 0;
1129 SvREFCNT_dec(PL_strtab);
1132 /* free the pointer tables used for cloning */
1133 ptr_table_free(PL_ptr_table);
1134 PL_ptr_table = (PTR_TBL_t*)NULL;
1137 /* free special SVs */
1139 SvREFCNT(&PL_sv_yes) = 0;
1140 sv_clear(&PL_sv_yes);
1141 SvANY(&PL_sv_yes) = NULL;
1142 SvFLAGS(&PL_sv_yes) = 0;
1144 SvREFCNT(&PL_sv_no) = 0;
1145 sv_clear(&PL_sv_no);
1146 SvANY(&PL_sv_no) = NULL;
1147 SvFLAGS(&PL_sv_no) = 0;
1151 for (i=0; i<=2; i++) {
1152 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1153 sv_clear(PERL_DEBUG_PAD(i));
1154 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1155 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1159 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
1160 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
1162 #ifdef DEBUG_LEAKING_SCALARS
1163 if (PL_sv_count != 0) {
1168 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
1169 svend = &sva[SvREFCNT(sva)];
1170 for (sv = sva + 1; sv < svend; ++sv) {
1171 if (SvTYPE(sv) != (svtype)SVTYPEMASK) {
1172 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
1174 " refcnt=%"UVuf pTHX__FORMAT "\n"
1175 "\tallocated at %s:%d %s %s (parent 0x%"UVxf");"
1177 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1179 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1181 sv->sv_debug_inpad ? "for" : "by",
1182 sv->sv_debug_optype ?
1183 PL_op_name[sv->sv_debug_optype]: "(none)",
1184 PTR2UV(sv->sv_debug_parent),
1187 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1188 Perl_dump_sv_child(aTHX_ sv);
1194 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1198 /* Wait for up to 4 seconds for child to terminate.
1199 This seems to be the least effort way of timing out on reaping
1201 struct timeval waitfor = {4, 0};
1202 int sock = PL_dumper_fd;
1206 FD_SET(sock, &rset);
1207 select(sock + 1, &rset, NULL, NULL, &waitfor);
1208 waitpid(child, &status, WNOHANG);
1213 #ifdef DEBUG_LEAKING_SCALARS_ABORT
1219 #ifdef PERL_DEBUG_READONLY_OPS
1225 #if defined(PERLIO_LAYERS)
1226 /* No more IO - including error messages ! */
1227 PerlIO_cleanup(aTHX);
1230 /* sv_undef needs to stay immortal until after PerlIO_cleanup
1231 as currently layers use it rather than NULL as a marker
1232 for no arg - and will try and SvREFCNT_dec it.
1234 SvREFCNT(&PL_sv_undef) = 0;
1235 SvREADONLY_off(&PL_sv_undef);
1237 Safefree(PL_origfilename);
1238 PL_origfilename = NULL;
1239 Safefree(PL_reg_curpm);
1240 Safefree(PL_reg_poscache);
1241 free_tied_hv_pool();
1242 Safefree(PL_op_mask);
1243 Safefree(PL_psig_name);
1244 PL_psig_name = (SV**)NULL;
1245 PL_psig_ptr = (SV**)NULL;
1247 /* We need to NULL PL_psig_pend first, so that
1248 signal handlers know not to use it */
1249 int *psig_save = PL_psig_pend;
1250 PL_psig_pend = (int*)NULL;
1251 Safefree(psig_save);
1255 PL_tainting = FALSE;
1256 PL_taint_warn = FALSE;
1257 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
1260 DEBUG_P(debprofdump());
1262 #ifdef USE_REENTRANT_API
1263 Perl_reentrant_free(aTHX);
1268 while (PL_regmatch_slab) {
1269 regmatch_slab *s = PL_regmatch_slab;
1270 PL_regmatch_slab = PL_regmatch_slab->next;
1274 /* As the absolutely last thing, free the non-arena SV for mess() */
1277 /* we know that type == SVt_PVMG */
1279 /* it could have accumulated taint magic */
1282 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1283 moremagic = mg->mg_moremagic;
1284 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1286 Safefree(mg->mg_ptr);
1290 /* we know that type >= SVt_PV */
1291 SvPV_free(PL_mess_sv);
1292 Safefree(SvANY(PL_mess_sv));
1293 Safefree(PL_mess_sv);
1300 =for apidoc perl_free
1302 Releases a Perl interpreter. See L<perlembed>.
1312 PERL_ARGS_ASSERT_PERL_FREE;
1314 if (PL_veto_cleanup)
1317 #ifdef PERL_TRACK_MEMPOOL
1320 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1321 * value as we're probably hunting memory leaks then
1323 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
1324 if (!s || atoi(s) == 0) {
1325 const U32 old_debug = PL_debug;
1326 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1327 thread at thread exit. */
1329 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1330 "free this thread's memory\n");
1331 PL_debug &= ~ DEBUG_m_FLAG;
1333 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
1334 safesysfree(sTHX + (char *)(aTHXx->Imemory_debug_header.next));
1335 PL_debug = old_debug;
1340 #if defined(WIN32) || defined(NETWARE)
1341 # if defined(PERL_IMPLICIT_SYS)
1344 void *host = nw_internal_host;
1346 void *host = w32_internal_host;
1348 PerlMem_free(aTHXx);
1350 nw_delete_internal_host(host);
1352 win32_delete_internal_host(host);
1356 PerlMem_free(aTHXx);
1359 PerlMem_free(aTHXx);
1363 #if defined(USE_ITHREADS)
1364 /* provide destructors to clean up the thread key when libperl is unloaded */
1365 #ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1367 #if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
1368 #pragma fini "perl_fini"
1369 #elif defined(__sun) && !defined(__GNUC__)
1370 #pragma fini (perl_fini)
1374 #if defined(__GNUC__)
1375 __attribute__((destructor))
1380 if (PL_curinterp && !PL_veto_cleanup)
1385 #endif /* THREADS */
1388 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
1391 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1392 PL_exitlist[PL_exitlistlen].fn = fn;
1393 PL_exitlist[PL_exitlistlen].ptr = ptr;
1398 S_set_caret_X(pTHX) {
1400 GV* tmpgv = gv_fetchpvs("\030", GV_ADD|GV_NOTQUAL, SVt_PV); /* $^X */
1402 SV *const caret_x = GvSV(tmpgv);
1404 sv_setpv(caret_x, os2_execname(aTHX));
1406 # ifdef USE_KERN_PROC_PATHNAME
1411 mib[2] = KERN_PROC_PATHNAME;
1414 if (sysctl(mib, 4, NULL, &size, NULL, 0) == 0
1415 && size > 0 && size < MAXPATHLEN * MAXPATHLEN) {
1416 sv_grow(caret_x, size);
1418 if (sysctl(mib, 4, SvPVX(caret_x), &size, NULL, 0) == 0
1420 SvPOK_only(caret_x);
1421 SvCUR_set(caret_x, size - 1);
1426 # elif defined(USE_NSGETEXECUTABLEPATH)
1428 uint32_t size = sizeof(buf);
1430 _NSGetExecutablePath(buf, &size);
1431 if (size < MAXPATHLEN * MAXPATHLEN) {
1432 sv_grow(caret_x, size);
1433 if (_NSGetExecutablePath(SvPVX(caret_x), &size) == 0) {
1434 char *const tidied = realpath(SvPVX(caret_x), NULL);
1436 sv_setpv(caret_x, tidied);
1439 SvPOK_only(caret_x);
1440 SvCUR_set(caret_x, size);
1445 # elif defined(HAS_PROCSELFEXE)
1446 char buf[MAXPATHLEN];
1447 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1449 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1450 includes a spurious NUL which will cause $^X to fail in system
1451 or backticks (this will prevent extensions from being built and
1452 many tests from working). readlink is not meant to add a NUL.
1453 Normal readlink works fine.
1455 if (len > 0 && buf[len-1] == '\0') {
1459 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1460 returning the text "unknown" from the readlink rather than the path
1461 to the executable (or returning an error from the readlink). Any
1462 valid path has a '/' in it somewhere, so use that to validate the
1463 result. See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1465 if (len > 0 && memchr(buf, '/', len)) {
1466 sv_setpvn(caret_x, buf, len);
1470 /* Fallback to this: */
1471 sv_setpv(caret_x, PL_origargv[0]);
1477 =for apidoc perl_parse
1479 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1484 #define SET_CURSTASH(newstash) \
1485 if (PL_curstash != newstash) { \
1486 SvREFCNT_dec(PL_curstash); \
1487 PL_curstash = (HV *)SvREFCNT_inc(newstash); \
1491 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
1498 PERL_ARGS_ASSERT_PERL_PARSE;
1499 #ifndef MULTIPLICITY
1500 PERL_UNUSED_ARG(my_perl);
1503 #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
1504 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
1505 * This MUST be done before any hash stores or fetches take place.
1506 * If you set PL_rehash_seed (and presumably also PL_rehash_seed_set)
1507 * yourself, it is your responsibility to provide a good random seed!
1508 * You can also define PERL_HASH_SEED in compile time, see hv.h. */
1509 if (!PL_rehash_seed_set)
1510 PL_rehash_seed = get_hash_seed();
1512 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
1514 if (s && (atoi(s) == 1))
1515 PerlIO_printf(Perl_debug_log, "HASH_SEED = %"UVuf"\n", PL_rehash_seed);
1517 #endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1522 if (PL_origalen != 0) {
1523 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1526 /* Set PL_origalen be the sum of the contiguous argv[]
1527 * elements plus the size of the env in case that it is
1528 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
1529 * as the maximum modifiable length of $0. In the worst case
1530 * the area we are able to modify is limited to the size of
1531 * the original argv[0]. (See below for 'contiguous', though.)
1533 const char *s = NULL;
1536 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
1537 /* Do the mask check only if the args seem like aligned. */
1539 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1541 /* See if all the arguments are contiguous in memory. Note
1542 * that 'contiguous' is a loose term because some platforms
1543 * align the argv[] and the envp[]. If the arguments look
1544 * like non-aligned, assume that they are 'strictly' or
1545 * 'traditionally' contiguous. If the arguments look like
1546 * aligned, we just check that they are within aligned
1547 * PTRSIZE bytes. As long as no system has something bizarre
1548 * like the argv[] interleaved with some other data, we are
1549 * fine. (Did I just evoke Murphy's Law?) --jhi */
1550 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1552 for (i = 1; i < PL_origargc; i++) {
1553 if ((PL_origargv[i] == s + 1
1555 || PL_origargv[i] == s + 2
1560 (PL_origargv[i] > s &&
1562 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1573 #ifndef PERL_USE_SAFE_PUTENV
1574 /* Can we grab env area too to be used as the area for $0? */
1575 if (s && PL_origenviron && !PL_use_safe_putenv) {
1576 if ((PL_origenviron[0] == s + 1)
1579 (PL_origenviron[0] > s &&
1580 PL_origenviron[0] <=
1581 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1584 #ifndef OS2 /* ENVIRON is read by the kernel too. */
1585 s = PL_origenviron[0];
1588 my_setenv("NoNe SuCh", NULL);
1589 /* Force copy of environment. */
1590 for (i = 1; PL_origenviron[i]; i++) {
1591 if (PL_origenviron[i] == s + 1
1594 (PL_origenviron[i] > s &&
1595 PL_origenviron[i] <=
1596 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1599 s = PL_origenviron[i];
1607 #endif /* !defined(PERL_USE_SAFE_PUTENV) */
1609 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
1614 /* Come here if running an undumped a.out. */
1616 PL_origfilename = savepv(argv[0]);
1617 PL_do_undump = FALSE;
1618 cxstack_ix = -1; /* start label stack again */
1620 assert (!PL_tainted);
1622 S_set_caret_X(aTHX);
1624 init_postdump_symbols(argc,argv,env);
1629 op_free(PL_main_root);
1630 PL_main_root = NULL;
1632 PL_main_start = NULL;
1633 SvREFCNT_dec(PL_main_cv);
1637 oldscope = PL_scopestack_ix;
1638 PL_dowarn = G_WARN_OFF;
1643 parse_body(env,xsinit);
1644 if (PL_unitcheckav) {
1645 call_list(oldscope, PL_unitcheckav);
1648 PERL_SET_PHASE(PERL_PHASE_CHECK);
1649 call_list(oldscope, PL_checkav);
1657 /* my_exit() was called */
1658 while (PL_scopestack_ix > oldscope)
1661 SET_CURSTASH(PL_defstash);
1662 if (PL_unitcheckav) {
1663 call_list(oldscope, PL_unitcheckav);
1666 PERL_SET_PHASE(PERL_PHASE_CHECK);
1667 call_list(oldscope, PL_checkav);
1672 PerlIO_printf(Perl_error_log, "panic: top_env\n");
1680 /* This needs to stay in perl.c, as perl.c is compiled with different flags for
1681 miniperl, and we need to see those flags reflected in the values here. */
1683 /* What this returns is subject to change. Use the public interface in Config.
1686 S_Internals_V(pTHX_ CV *cv)
1689 #ifdef LOCAL_PATCH_COUNT
1690 const int local_patch_count = LOCAL_PATCH_COUNT;
1692 const int local_patch_count = 0;
1694 const int entries = 3 + local_patch_count;
1696 static char non_bincompat_options[] =
1703 # ifdef PERL_DISABLE_PMC
1706 # ifdef PERL_DONT_CREATE_GVSV
1707 " PERL_DONT_CREATE_GVSV"
1709 # ifdef PERL_EXTERNAL_GLOB
1710 " PERL_EXTERNAL_GLOB"
1712 # ifdef PERL_IS_MINIPERL
1715 # ifdef PERL_MALLOC_WRAP
1718 # ifdef PERL_MEM_LOG
1721 # ifdef PERL_MEM_LOG_NOIMPL
1722 " PERL_MEM_LOG_NOIMPL"
1724 # ifdef PERL_PRESERVE_IVUV
1725 " PERL_PRESERVE_IVUV"
1727 # ifdef PERL_RELOCATABLE_INCPUSH
1728 " PERL_RELOCATABLE_INCPUSH"
1730 # ifdef PERL_USE_DEVEL
1733 # ifdef PERL_USE_SAFE_PUTENV
1734 " PERL_USE_SAFE_PUTENV"
1736 # ifdef UNLINK_ALL_VERSIONS
1737 " UNLINK_ALL_VERSIONS"
1739 # ifdef USE_ATTRIBUTES_FOR_PERLIO
1740 " USE_ATTRIBUTES_FOR_PERLIO"
1742 # ifdef USE_FAST_STDIO
1748 # ifdef USE_LOCALE_CTYPE
1751 # ifdef USE_PERL_ATOF
1754 # ifdef USE_SITECUSTOMIZE
1755 " USE_SITECUSTOMIZE"
1758 PERL_UNUSED_ARG(cv);
1759 PERL_UNUSED_ARG(items);
1761 EXTEND(SP, entries);
1763 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1764 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1765 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1769 PUSHs(Perl_newSVpvn_flags(aTHX_
1770 STR_WITH_LEN("Compiled at " __DATE__ " " __TIME__),
1773 PUSHs(Perl_newSVpvn_flags(aTHX_ STR_WITH_LEN("Compiled on " __DATE__),
1777 PUSHs(&PL_sv_undef);
1780 for (i = 1; i <= local_patch_count; i++) {
1781 /* This will be an undef, if PL_localpatches[i] is NULL. */
1782 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1788 #define INCPUSH_UNSHIFT 0x01
1789 #define INCPUSH_ADD_OLD_VERS 0x02
1790 #define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1791 #define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1792 #define INCPUSH_NOT_BASEDIR 0x10
1793 #define INCPUSH_CAN_RELOCATE 0x20
1794 #define INCPUSH_ADD_SUB_DIRS \
1795 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
1798 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
1802 int argc = PL_origargc;
1803 char **argv = PL_origargv;
1804 const char *scriptname = NULL;
1805 VOL bool dosearch = FALSE;
1807 bool doextract = FALSE;
1808 const char *cddir = NULL;
1809 #ifdef USE_SITECUSTOMIZE
1810 bool minus_f = FALSE;
1812 SV *linestr_sv = NULL;
1813 bool add_read_e_script = FALSE;
1814 U32 lex_start_flags = 0;
1816 PERL_SET_PHASE(PERL_PHASE_START);
1822 for (argc--,argv++; argc > 0; argc--,argv++) {
1823 if (argv[0][0] != '-' || !argv[0][1])
1829 #ifndef PERL_STRICT_CR
1853 if ((s = moreswitches(s)))
1858 CHECK_MALLOC_TOO_LATE_FOR('t');
1859 if( !PL_tainting ) {
1860 PL_taint_warn = TRUE;
1866 CHECK_MALLOC_TOO_LATE_FOR('T');
1868 PL_taint_warn = FALSE;
1876 forbid_setid('e', FALSE);
1878 PL_e_script = newSVpvs("");
1879 add_read_e_script = TRUE;
1882 sv_catpv(PL_e_script, s);
1884 sv_catpv(PL_e_script, argv[1]);
1888 Perl_croak(aTHX_ "No code specified for -%c", c);
1889 sv_catpvs(PL_e_script, "\n");
1893 #ifdef USE_SITECUSTOMIZE
1899 case 'I': /* -I handled both here and in moreswitches() */
1900 forbid_setid('I', FALSE);
1901 if (!*++s && (s=argv[1]) != NULL) {
1905 STRLEN len = strlen(s);
1906 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
1909 Perl_croak(aTHX_ "No directory specified for -I");
1912 forbid_setid('S', FALSE);
1921 opts_prog = newSVpvs("use Config; Config::_V()");
1925 opts_prog = Perl_newSVpvf(aTHX_
1926 "use Config; Config::config_vars(qw%c%s%c)",
1930 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
1931 /* don't look for script or read stdin */
1932 scriptname = BIT_BUCKET;
1944 if (!*++s || isSPACE(*s)) {
1948 /* catch use of gnu style long options.
1949 Both of these exit immediately. */
1950 if (strEQ(s, "version"))
1952 if (strEQ(s, "help"))
1957 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1968 #ifndef SECURE_INTERNAL_GETENV
1971 (s = PerlEnv_getenv("PERL5OPT")))
1975 if (*s == '-' && *(s+1) == 'T') {
1976 CHECK_MALLOC_TOO_LATE_FOR('T');
1978 PL_taint_warn = FALSE;
1981 char *popt_copy = NULL;
1994 if (!strchr("CDIMUdmtwW", *s))
1995 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
1999 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
2000 s = popt_copy + (s - d);
2008 if( !PL_tainting ) {
2009 PL_taint_warn = TRUE;
2020 /* Set $^X early so that it can be used for relocatable paths in @INC */
2021 /* and for SITELIB_EXP in USE_SITECUSTOMIZE */
2022 assert (!PL_tainted);
2024 S_set_caret_X(aTHX);
2027 #if defined(USE_SITECUSTOMIZE)
2029 /* The games with local $! are to avoid setting errno if there is no
2030 sitecustomize script. "q%c...%c", 0, ..., 0 becomes "q\0...\0",
2031 ie a q() operator with a NUL byte as a the delimiter. This avoids
2032 problems with pathnames containing (say) ' */
2033 # ifdef PERL_IS_MINIPERL
2034 AV *const inc = GvAV(PL_incgv);
2035 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
2038 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2040 "BEGIN { do {local $!; -f q%c%"SVf"/buildcustomize.pl%c} && do q%c%"SVf"/buildcustomize.pl%c }",
2045 /* SITELIB_EXP is a function call on Win32. */
2046 const char *const raw_sitelib = SITELIB_EXP;
2048 /* process .../.. if PERL_RELOCATABLE_INC is defined */
2049 SV *sitelib_sv = mayberelocate(raw_sitelib, strlen(raw_sitelib),
2050 INCPUSH_CAN_RELOCATE);
2051 const char *const sitelib = SvPVX(sitelib_sv);
2052 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2054 "BEGIN { do {local $!; -f q%c%s/sitecustomize.pl%c} && do q%c%s/sitecustomize.pl%c }",
2057 assert (SvREFCNT(sitelib_sv) == 1);
2058 SvREFCNT_dec(sitelib_sv);
2065 scriptname = argv[0];
2068 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2070 else if (scriptname == NULL) {
2072 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
2078 assert (!PL_tainted);
2082 bool suidscript = FALSE;
2084 rsfp = open_script(scriptname, dosearch, &suidscript);
2086 rsfp = PerlIO_stdin();
2087 lex_start_flags = LEX_DONT_CLOSE_RSFP;
2090 validate_suid(rsfp);
2093 # if defined(SIGCHLD) || defined(SIGCLD)
2096 # define SIGCHLD SIGCLD
2098 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2099 if (sigstate == (Sighandler_t) SIG_IGN) {
2100 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2101 "Can't ignore signal CHLD, forcing to default");
2102 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2110 /* This will croak if suidscript is true, as -x cannot be used with
2112 forbid_setid('x', suidscript);
2113 /* Hence you can't get here if suidscript is true */
2115 linestr_sv = newSV_type(SVt_PV);
2116 lex_start_flags |= LEX_START_COPIED;
2117 find_beginning(linestr_sv, rsfp);
2118 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2119 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2123 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
2124 CvUNIQUE_on(PL_compcv);
2126 CvPADLIST(PL_compcv) = pad_new(0);
2128 PL_isarev = newHV();
2131 boot_core_UNIVERSAL();
2133 newXS("Internals::V", S_Internals_V, __FILE__);
2136 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
2138 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC) || defined(SYMBIAN)
2144 # ifdef HAS_SOCKS5_INIT
2145 socks5_init(argv[0]);
2151 init_predump_symbols();
2152 /* init_postdump_symbols not currently designed to be called */
2153 /* more than once (ENV isn't cleared first, for example) */
2154 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
2156 init_postdump_symbols(argc,argv,env);
2158 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2159 * or explicitly in some platforms.
2160 * locale.c:Perl_init_i18nl10n() if the environment
2161 * look like the user wants to use UTF-8. */
2162 #if defined(__SYMBIAN32__)
2163 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2165 # ifndef PERL_IS_MINIPERL
2167 /* Requires init_predump_symbols(). */
2168 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
2173 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
2174 * and the default open disciplines. */
2175 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2176 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2178 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2179 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2180 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2182 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2183 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2184 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2186 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2187 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
2188 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2190 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2191 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2194 sv_setpvs(sv, ":utf8\0:utf8");
2196 sv_setpvs(sv, ":utf8\0");
2199 sv_setpvs(sv, "\0:utf8");
2208 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2209 if (strEQ(s, "unsafe"))
2210 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2211 else if (strEQ(s, "safe"))
2212 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2214 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2221 if ((s = PerlEnv_getenv("PERL_XMLDUMP"))) {
2225 PL_xmlfp = PerlIO_stdout();
2227 PL_xmlfp = PerlIO_open(s, "w");
2229 Perl_croak(aTHX_ "Can't open %s", s);
2231 my_setenv("PERL_XMLDUMP", NULL); /* hide from subprocs */
2237 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2238 PL_madskills = atoi(s);
2239 my_setenv("PERL_MADSKILLS", NULL); /* hide from subprocs */
2244 lex_start(linestr_sv, rsfp, lex_start_flags);
2246 SvREFCNT_dec(linestr_sv);
2248 PL_subname = newSVpvs("main");
2250 if (add_read_e_script)
2251 filter_add(read_e_script, NULL);
2253 /* now parse the script */
2255 SETERRNO(0,SS_NORMAL);
2256 if (yyparse(GRAMPROG) || PL_parser->error_count) {
2258 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
2260 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
2264 CopLINE_set(PL_curcop, 0);
2265 SET_CURSTASH(PL_defstash);
2267 SvREFCNT_dec(PL_e_script);
2275 SAVECOPFILE(PL_curcop);
2276 SAVECOPLINE(PL_curcop);
2277 gv_check(PL_defstash);
2286 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2287 dump_mstats("after compilation:");
2292 PL_restartjmpenv = NULL;
2298 =for apidoc perl_run
2300 Tells a Perl interpreter to run. See L<perlembed>.
2313 PERL_ARGS_ASSERT_PERL_RUN;
2314 #ifndef MULTIPLICITY
2315 PERL_UNUSED_ARG(my_perl);
2318 oldscope = PL_scopestack_ix;
2326 cxstack_ix = -1; /* start context stack again */
2328 case 0: /* normal completion */
2332 case 2: /* my_exit() */
2333 while (PL_scopestack_ix > oldscope)
2336 SET_CURSTASH(PL_defstash);
2337 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
2338 PL_endav && !PL_minus_c) {
2339 PERL_SET_PHASE(PERL_PHASE_END);
2340 call_list(oldscope, PL_endav);
2343 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2344 dump_mstats("after execution: ");
2350 POPSTACK_TO(PL_mainstack);
2353 PerlIO_printf(Perl_error_log, "panic: restartop in perl_run\n");
2364 S_run_body(pTHX_ I32 oldscope)
2367 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
2368 PL_sawampersand ? "Enabling" : "Omitting"));
2370 if (!PL_restartop) {
2374 exit(0); /* less likely to core dump than my_exit(0) */
2378 if (DEBUG_x_TEST || DEBUG_B_TEST)
2379 dump_all_perl(!DEBUG_B_TEST);
2381 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
2385 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
2388 if (PERLDB_SINGLE && PL_DBsingle)
2389 sv_setiv(PL_DBsingle, 1);
2391 PERL_SET_PHASE(PERL_PHASE_INIT);
2392 call_list(oldscope, PL_initav);
2394 #ifdef PERL_DEBUG_READONLY_OPS
2395 Perl_pending_Slabs_to_ro(aTHX);
2401 PERL_SET_PHASE(PERL_PHASE_RUN);
2404 PL_restartjmpenv = NULL;
2405 PL_op = PL_restartop;
2409 else if (PL_main_start) {
2410 CvDEPTH(PL_main_cv) = 1;
2411 PL_op = PL_main_start;
2415 assert(0); /* NOTREACHED */
2419 =head1 SV Manipulation Functions
2421 =for apidoc p||get_sv
2423 Returns the SV of the specified Perl scalar. C<flags> are passed to
2424 C<gv_fetchpv>. If C<GV_ADD> is set and the
2425 Perl variable does not exist then it will be created. If C<flags> is zero
2426 and the variable does not exist then NULL is returned.
2432 Perl_get_sv(pTHX_ const char *name, I32 flags)
2436 PERL_ARGS_ASSERT_GET_SV;
2438 gv = gv_fetchpv(name, flags, SVt_PV);
2445 =head1 Array Manipulation Functions
2447 =for apidoc p||get_av
2449 Returns the AV of the specified Perl global or package array with the given
2450 name (so it won't work on lexical variables). C<flags> are passed
2451 to C<gv_fetchpv>. If C<GV_ADD> is set and the
2452 Perl variable does not exist then it will be created. If C<flags> is zero
2453 and the variable does not exist then NULL is returned.
2455 Perl equivalent: C<@{"$name"}>.
2461 Perl_get_av(pTHX_ const char *name, I32 flags)
2463 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
2465 PERL_ARGS_ASSERT_GET_AV;
2475 =head1 Hash Manipulation Functions
2477 =for apidoc p||get_hv
2479 Returns the HV of the specified Perl hash. C<flags> are passed to
2480 C<gv_fetchpv>. If C<GV_ADD> is set and the
2481 Perl variable does not exist then it will be created. If C<flags> is zero
2482 and the variable does not exist then NULL is returned.
2488 Perl_get_hv(pTHX_ const char *name, I32 flags)
2490 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
2492 PERL_ARGS_ASSERT_GET_HV;
2502 =head1 CV Manipulation Functions
2504 =for apidoc p||get_cvn_flags
2506 Returns the CV of the specified Perl subroutine. C<flags> are passed to
2507 C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2508 exist then it will be declared (which has the same effect as saying
2509 C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2510 then NULL is returned.
2512 =for apidoc p||get_cv
2514 Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
2520 Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
2522 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
2524 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2526 /* XXX this is probably not what they think they're getting.
2527 * It has the same effect as "sub name;", i.e. just a forward
2529 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
2530 return newSTUB(gv,0);
2537 /* Nothing in core calls this now, but we can't replace it with a macro and
2538 move it to mathoms.c as a macro would evaluate name twice. */
2540 Perl_get_cv(pTHX_ const char *name, I32 flags)
2542 PERL_ARGS_ASSERT_GET_CV;
2544 return get_cvn_flags(name, strlen(name), flags);
2547 /* Be sure to refetch the stack pointer after calling these routines. */
2551 =head1 Callback Functions
2553 =for apidoc p||call_argv
2555 Performs a callback to the specified named and package-scoped Perl subroutine
2556 with C<argv> (a NULL-terminated array of strings) as arguments. See L<perlcall>.
2558 Approximate Perl equivalent: C<&{"$sub_name"}(@$argv)>.
2564 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
2566 /* See G_* flags in cop.h */
2567 /* null terminated arg list */
2572 PERL_ARGS_ASSERT_CALL_ARGV;
2577 mXPUSHs(newSVpv(*argv,0));
2582 return call_pv(sub_name, flags);
2586 =for apidoc p||call_pv
2588 Performs a callback to the specified Perl sub. See L<perlcall>.
2594 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
2595 /* name of the subroutine */
2596 /* See G_* flags in cop.h */
2598 PERL_ARGS_ASSERT_CALL_PV;
2600 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
2604 =for apidoc p||call_method
2606 Performs a callback to the specified Perl method. The blessed object must
2607 be on the stack. See L<perlcall>.
2613 Perl_call_method(pTHX_ const char *methname, I32 flags)
2614 /* name of the subroutine */
2615 /* See G_* flags in cop.h */
2618 PERL_ARGS_ASSERT_CALL_METHOD;
2620 len = strlen(methname);
2622 /* XXX: sv_2mortal(newSVpvn_share(methname, len)) can be faster */
2623 return call_sv(newSVpvn_flags(methname, len, SVs_TEMP), flags | G_METHOD);
2626 /* May be called with any of a CV, a GV, or an SV containing the name. */
2628 =for apidoc p||call_sv
2630 Performs a callback to the Perl sub whose name is in the SV. See
2637 Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
2638 /* See G_* flags in cop.h */
2641 LOGOP myop; /* fake syntax tree node */
2646 bool oldcatch = CATCH_GET;
2648 OP* const oldop = PL_op;
2651 PERL_ARGS_ASSERT_CALL_SV;
2653 if (flags & G_DISCARD) {
2657 if (!(flags & G_WANT)) {
2658 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2663 Zero(&myop, 1, LOGOP);
2664 myop.op_next = NULL;
2665 if (!(flags & G_NOARGS))
2666 myop.op_flags |= OPf_STACKED;
2667 myop.op_flags |= OP_GIMME_REVERSE(flags);
2671 EXTEND(PL_stack_sp, 1);
2672 *++PL_stack_sp = sv;
2674 oldscope = PL_scopestack_ix;
2676 if (PERLDB_SUB && PL_curstash != PL_debstash
2677 /* Handle first BEGIN of -d. */
2678 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
2679 /* Try harder, since this may have been a sighandler, thus
2680 * curstash may be meaningless. */
2681 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
2682 && !(flags & G_NODEBUG))
2683 PL_op->op_private |= OPpENTERSUB_DB;
2685 if (flags & G_METHOD) {
2686 Zero(&method_op, 1, UNOP);
2687 method_op.op_next = PL_op;
2688 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2689 method_op.op_type = OP_METHOD;
2690 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
2691 myop.op_type = OP_ENTERSUB;
2692 PL_op = (OP*)&method_op;
2695 if (!(flags & G_EVAL)) {
2697 CALL_BODY_SUB((OP*)&myop);
2698 retval = PL_stack_sp - (PL_stack_base + oldmark);
2699 CATCH_SET(oldcatch);
2702 myop.op_other = (OP*)&myop;
2704 create_eval_scope(flags|G_FAKINGEVAL);
2712 CALL_BODY_SUB((OP*)&myop);
2713 retval = PL_stack_sp - (PL_stack_base + oldmark);
2714 if (!(flags & G_KEEPERR)) {
2722 /* my_exit() was called */
2723 SET_CURSTASH(PL_defstash);
2727 assert(0); /* NOTREACHED */
2730 PL_restartjmpenv = NULL;
2731 PL_op = PL_restartop;
2735 PL_stack_sp = PL_stack_base + oldmark;
2736 if ((flags & G_WANT) == G_ARRAY)
2740 *++PL_stack_sp = &PL_sv_undef;
2745 if (PL_scopestack_ix > oldscope)
2746 delete_eval_scope();
2750 if (flags & G_DISCARD) {
2751 PL_stack_sp = PL_stack_base + oldmark;
2760 /* Eval a string. The G_EVAL flag is always assumed. */
2763 =for apidoc p||eval_sv
2765 Tells Perl to C<eval> the string in the SV. It supports the same flags
2766 as C<call_sv>, with the obvious exception of G_EVAL. See L<perlcall>.
2772 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
2774 /* See G_* flags in cop.h */
2778 UNOP myop; /* fake syntax tree node */
2779 VOL I32 oldmark = SP - PL_stack_base;
2782 OP* const oldop = PL_op;
2785 PERL_ARGS_ASSERT_EVAL_SV;
2787 if (flags & G_DISCARD) {
2794 Zero(PL_op, 1, UNOP);
2795 EXTEND(PL_stack_sp, 1);
2796 *++PL_stack_sp = sv;
2798 if (!(flags & G_NOARGS))
2799 myop.op_flags = OPf_STACKED;
2800 myop.op_next = NULL;
2801 myop.op_type = OP_ENTEREVAL;
2802 myop.op_flags |= OP_GIMME_REVERSE(flags);
2803 if (flags & G_KEEPERR)
2804 myop.op_flags |= OPf_SPECIAL;
2805 if (PL_reg_state.re_reparsing)
2806 myop.op_private = OPpEVAL_COPHH;
2808 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2809 * before a PUSHEVAL, which corrupts the stack after a croak */
2810 TAINT_PROPER("eval_sv()");
2816 if (PL_op == (OP*)(&myop)) {
2817 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2819 goto fail; /* failed in compilation */
2822 retval = PL_stack_sp - (PL_stack_base + oldmark);
2823 if (!(flags & G_KEEPERR)) {
2831 /* my_exit() was called */
2832 SET_CURSTASH(PL_defstash);
2836 assert(0); /* NOTREACHED */
2839 PL_restartjmpenv = NULL;
2840 PL_op = PL_restartop;
2845 PL_stack_sp = PL_stack_base + oldmark;
2846 if ((flags & G_WANT) == G_ARRAY)
2850 *++PL_stack_sp = &PL_sv_undef;
2856 if (flags & G_DISCARD) {
2857 PL_stack_sp = PL_stack_base + oldmark;
2867 =for apidoc p||eval_pv
2869 Tells Perl to C<eval> the given string and return an SV* result.
2875 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
2879 SV* sv = newSVpv(p, 0);
2881 PERL_ARGS_ASSERT_EVAL_PV;
2883 eval_sv(sv, G_SCALAR);
2890 if (croak_on_error && SvTRUE(ERRSV)) {
2891 Perl_croak(aTHX_ "%s", SvPVx_nolen_const(ERRSV));
2897 /* Require a module. */
2900 =head1 Embedding Functions
2902 =for apidoc p||require_pv
2904 Tells Perl to C<require> the file named by the string argument. It is
2905 analogous to the Perl code C<eval "require '$file'">. It's even
2906 implemented that way; consider using load_module instead.
2911 Perl_require_pv(pTHX_ const char *pv)
2917 PERL_ARGS_ASSERT_REQUIRE_PV;
2919 PUSHSTACKi(PERLSI_REQUIRE);
2921 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2922 eval_sv(sv_2mortal(sv), G_DISCARD);
2928 S_usage(pTHX) /* XXX move this out into a module ? */
2930 /* This message really ought to be max 23 lines.
2931 * Removed -h because the user already knows that option. Others? */
2933 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
2934 minimum of 509 character string literals. */
2935 static const char * const usage_msg[] = {
2936 " -0[octal] specify record separator (\\0, if no argument)\n"
2937 " -a autosplit mode with -n or -p (splits $_ into @F)\n"
2938 " -C[number/list] enables the listed Unicode features\n"
2939 " -c check syntax only (runs BEGIN and CHECK blocks)\n"
2940 " -d[:debugger] run program under debugger\n"
2941 " -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
2942 " -e program one line of program (several -e's allowed, omit programfile)\n"
2943 " -E program like -e, but enables all optional features\n"
2944 " -f don't do $sitelib/sitecustomize.pl at startup\n"
2945 " -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
2946 " -i[extension] edit <> files in place (makes backup if extension supplied)\n"
2947 " -Idirectory specify @INC/#include directory (several -I's allowed)\n",
2948 " -l[octal] enable line ending processing, specifies line terminator\n"
2949 " -[mM][-]module execute \"use/no module...\" before executing program\n"
2950 " -n assume \"while (<>) { ... }\" loop around program\n"
2951 " -p assume loop like -n but print line also, like sed\n"
2952 " -s enable rudimentary parsing for switches after programfile\n"
2953 " -S look for programfile using PATH environment variable\n",
2954 " -t enable tainting warnings\n"
2955 " -T enable tainting checks\n"
2956 " -u dump core after parsing program\n"
2957 " -U allow unsafe operations\n"
2958 " -v print version, patchlevel and license\n"
2959 " -V[:variable] print configuration summary (or a single Config.pm variable)\n",
2960 " -w enable many useful warnings\n"
2961 " -W enable all warnings\n"
2962 " -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
2963 " -X disable all warnings\n"
2965 "Run 'perldoc perl' for more help with Perl.\n\n",
2968 const char * const *p = usage_msg;
2969 PerlIO *out = PerlIO_stdout();
2972 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
2975 PerlIO_puts(out, *p++);
2979 /* convert a string of -D options (or digits) into an int.
2980 * sets *s to point to the char after the options */
2984 Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
2986 static const char * const usage_msgd[] = {
2987 " Debugging flag values: (see also -d)\n"
2988 " p Tokenizing and parsing (with v, displays parse stack)\n"
2989 " s Stack snapshots (with v, displays all stacks)\n"
2990 " l Context (loop) stack processing\n"
2991 " t Trace execution\n"
2992 " o Method and overloading resolution\n",
2993 " c String/numeric conversions\n"
2994 " P Print profiling info, source file input state\n"
2995 " m Memory and SV allocation\n"
2996 " f Format processing\n"
2997 " r Regular expression parsing and execution\n"
2998 " x Syntax tree dump\n",
2999 " u Tainting checks\n"
3000 " H Hash dump -- usurps values()\n"
3001 " X Scratchpad allocation\n"
3004 " R Include reference counts of dumped variables (eg when using -Ds)\n",
3005 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
3006 " v Verbose: use in conjunction with other flags\n"
3007 " C Copy On Write\n"
3008 " A Consistency checks on internal structures\n"
3009 " q quiet - currently only suppresses the 'EXECUTING' message\n"
3010 " M trace smart match resolution\n"
3011 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
3016 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
3019 /* if adding extra options, remember to update DEBUG_MASK */
3020 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMB";
3022 for (; isALNUM(**s); (*s)++) {
3023 const char * const d = strchr(debopts,**s);
3025 i |= 1 << (d - debopts);
3026 else if (ckWARN_d(WARN_DEBUGGING))
3027 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3028 "invalid option -D%c, use -D'' to see choices\n", **s);
3031 else if (isDIGIT(**s)) {
3033 for (; isALNUM(**s); (*s)++) ;
3035 else if (givehelp) {
3036 const char *const *p = usage_msgd;
3037 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
3040 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
3041 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3042 "-Dp not implemented on this platform\n");
3048 /* This routine handles any switches that can be given during run */
3051 Perl_moreswitches(pTHX_ const char *s)
3055 const char option = *s; /* used to remember option in -m/-M code */
3057 PERL_ARGS_ASSERT_MORESWITCHES;
3065 SvREFCNT_dec(PL_rs);
3066 if (s[1] == 'x' && s[2]) {
3067 const char *e = s+=2;
3073 flags = PERL_SCAN_SILENT_ILLDIGIT;
3074 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3075 if (s + numlen < e) {
3076 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3080 PL_rs = newSVpvs("");
3081 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
3082 tmps = (U8*)SvPVX(PL_rs);
3083 uvchr_to_utf8(tmps, rschar);
3084 SvCUR_set(PL_rs, UNISKIP(rschar));
3089 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3090 if (rschar & ~((U8)~0))
3091 PL_rs = &PL_sv_undef;
3092 else if (!rschar && numlen >= 2)
3093 PL_rs = newSVpvs("");
3095 char ch = (char)rschar;
3096 PL_rs = newSVpvn(&ch, 1);
3099 sv_setsv(get_sv("/", GV_ADD), PL_rs);
3104 PL_unicode = parse_unicode_opts( (const char **)&s );
3105 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3111 while (*s && !isSPACE(*s)) ++s;
3112 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
3123 forbid_setid('d', FALSE);
3126 /* -dt indicates to the debugger that threads will be used */
3127 if (*s == 't' && !isALNUM(s[1])) {
3129 my_setenv("PERL5DB_THREADED", "1");
3132 /* The following permits -d:Mod to accepts arguments following an =
3133 in the fashion that -MSome::Mod does. */
3134 if (*s == ':' || *s == '=') {
3141 sv = newSVpvs("no Devel::");
3143 sv = newSVpvs("use Devel::");
3147 end = s + strlen(s);
3149 /* We now allow -d:Module=Foo,Bar and -d:-Module */
3150 while(isALNUM(*s) || *s==':') ++s;
3152 sv_catpvn(sv, start, end - start);
3154 sv_catpvn(sv, start, s-start);
3155 /* Don't use NUL as q// delimiter here, this string goes in the
3157 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
3160 my_setenv("PERL5DB", SvPV_nolen_const(sv));
3164 PL_perldb = PERLDB_ALL;
3171 forbid_setid('D', FALSE);
3173 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
3174 #else /* !DEBUGGING */
3175 if (ckWARN_d(WARN_DEBUGGING))
3176 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3177 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
3178 for (s++; isALNUM(*s); s++) ;
3185 Safefree(PL_inplace);
3186 #if defined(__CYGWIN__) /* do backup extension automagically */
3187 if (*(s+1) == '\0') {
3188 PL_inplace = savepvs(".bak");
3191 #endif /* __CYGWIN__ */
3193 const char * const start = ++s;
3194 while (*s && !isSPACE(*s))
3197 PL_inplace = savepvn(start, s - start);
3201 if (*s == '-') /* Additional switches on #! line. */
3205 case 'I': /* -I handled both here and in parse_body() */
3206 forbid_setid('I', FALSE);
3208 while (*s && isSPACE(*s))
3213 /* ignore trailing spaces (possibly followed by other switches) */
3215 for (e = p; *e && !isSPACE(*e); e++) ;
3219 } while (*p && *p != '-');
3221 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
3227 Perl_croak(aTHX_ "No directory specified for -I");
3233 SvREFCNT_dec(PL_ors_sv);
3239 PL_ors_sv = newSVpvs("\n");
3240 numlen = 3 + (*s == '0');
3241 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
3245 if (RsPARA(PL_rs)) {
3246 PL_ors_sv = newSVpvs("\n\n");
3249 PL_ors_sv = newSVsv(PL_rs);
3254 forbid_setid('M', FALSE); /* XXX ? */
3257 forbid_setid('m', FALSE); /* XXX ? */
3262 const char *use = "use ";
3264 /* -M-foo == 'no foo' */
3265 /* Leading space on " no " is deliberate, to make both
3266 possibilities the same length. */
3267 if (*s == '-') { use = " no "; ++s; }
3268 sv = newSVpvn(use,4);
3270 /* We allow -M'Module qw(Foo Bar)' */
3271 while(isALNUM(*s) || *s==':') {
3280 Perl_croak(aTHX_ "Module name required with -%c option",
3283 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3284 "contains single ':'",
3285 (int)(s - start), start, option);
3286 end = s + strlen(s);
3288 sv_catpvn(sv, start, end - start);
3289 if (option == 'm') {
3291 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
3292 sv_catpvs( sv, " ()");
3295 sv_catpvn(sv, start, s-start);
3296 /* Use NUL as q''-delimiter. */
3297 sv_catpvs(sv, " split(/,/,q\0");
3299 sv_catpvn(sv, s, end - s);
3300 sv_catpvs(sv, "\0)");
3303 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
3306 Perl_croak(aTHX_ "Missing argument to -%c", option);
3317 forbid_setid('s', FALSE);
3318 PL_doswitches = TRUE;
3328 PL_do_undump = TRUE;
3338 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
3339 PL_dowarn |= G_WARN_ON;
3344 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
3345 if (!specialWARN(PL_compiling.cop_warnings))
3346 PerlMemShared_free(PL_compiling.cop_warnings);
3347 PL_compiling.cop_warnings = pWARN_ALL ;
3351 PL_dowarn = G_WARN_ALL_OFF;
3352 if (!specialWARN(PL_compiling.cop_warnings))
3353 PerlMemShared_free(PL_compiling.cop_warnings);
3354 PL_compiling.cop_warnings = pWARN_NONE ;
3361 if (s[0] == '-') /* Additional switches on #! line. */
3366 #if defined(WIN32) || !defined(PERL_STRICT_CR)
3372 #ifdef ALTERNATE_SHEBANG
3373 case 'S': /* OS/2 needs -S on "extproc" line. */
3376 case 'e': case 'f': case 'x': case 'E':
3377 #ifndef ALTERNATE_SHEBANG
3381 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
3384 "Unrecognized switch: -%.1s (-h will show valid options)",s
3394 if (!sv_derived_from(PL_patchlevel, "version"))
3395 upg_version(PL_patchlevel, TRUE);
3398 SV* level= vstringify(PL_patchlevel);
3399 #ifdef PERL_PATCHNUM
3400 # ifdef PERL_GIT_UNCOMMITTED_CHANGES
3401 SV *num = newSVpvs(PERL_PATCHNUM "*");
3403 SV *num = newSVpvs(PERL_PATCHNUM);
3406 if (sv_len(num)>=sv_len(level) && strnEQ(SvPV_nolen(num),SvPV_nolen(level),sv_len(level))) {
3407 SvREFCNT_dec(level);
3410 Perl_sv_catpvf(aTHX_ level, " (%"SVf")", num);
3414 PerlIO_printf(PerlIO_stdout(),
3415 "\nThis is perl " STRINGIFY(PERL_REVISION)
3416 ", version " STRINGIFY(PERL_VERSION)
3417 ", subversion " STRINGIFY(PERL_SUBVERSION)
3418 " (%"SVf") built for " ARCHNAME, level
3420 SvREFCNT_dec(level);
3423 /* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3424 PerlIO_printf(PerlIO_stdout(),
3425 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
3426 SVfARG(vstringify(PL_patchlevel))));
3427 PerlIO_printf(PerlIO_stdout(),
3428 Perl_form(aTHX_ " built under %s at %s %s\n",
3429 OSNAME, __DATE__, __TIME__));
3430 PerlIO_printf(PerlIO_stdout(),
3431 Perl_form(aTHX_ " OS Specific Release: %s\n",
3434 #if defined(LOCAL_PATCH_COUNT)
3435 if (LOCAL_PATCH_COUNT > 0)
3436 PerlIO_printf(PerlIO_stdout(),
3437 "\n(with %d registered patch%s, "
3438 "see perl -V for more detail)",
3440 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
3443 PerlIO_printf(PerlIO_stdout(),
3444 "\n\nCopyright 1987-2012, Larry Wall\n");
3446 PerlIO_printf(PerlIO_stdout(),
3447 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
3450 PerlIO_printf(PerlIO_stdout(),
3451 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3452 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
3455 PerlIO_printf(PerlIO_stdout(),
3456 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
3457 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
3460 PerlIO_printf(PerlIO_stdout(),
3461 "atariST series port, ++jrb bammi@cadence.com\n");
3464 PerlIO_printf(PerlIO_stdout(),
3465 "BeOS port Copyright Tom Spindler, 1997-1999\n");
3468 PerlIO_printf(PerlIO_stdout(),
3469 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n");
3472 PerlIO_printf(PerlIO_stdout(),
3473 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
3476 PerlIO_printf(PerlIO_stdout(),
3477 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
3480 PerlIO_printf(PerlIO_stdout(),
3481 "VM/ESA port by Neale Ferguson, 1998-1999\n");
3484 PerlIO_printf(PerlIO_stdout(),
3485 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
3488 PerlIO_printf(PerlIO_stdout(),
3489 "EPOC port by Olaf Flebbe, 1999-2002\n");
3492 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
3493 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
3496 #ifdef __SYMBIAN32__
3497 PerlIO_printf(PerlIO_stdout(),
3498 "Symbian port by Nokia, 2004-2005\n");
3500 #ifdef BINARY_BUILD_NOTICE
3501 BINARY_BUILD_NOTICE;
3503 PerlIO_printf(PerlIO_stdout(),
3505 Perl may be copied only under the terms of either the Artistic License or the\n\
3506 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
3507 Complete documentation for Perl, including FAQ lists, should be found on\n\
3508 this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
3509 Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
3513 /* compliments of Tom Christiansen */
3515 /* unexec() can be found in the Gnu emacs distribution */
3516 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
3519 #include <lib$routines.h>
3523 Perl_my_unexec(pTHX)
3525 PERL_UNUSED_CONTEXT;
3527 SV * prog = newSVpv(BIN_EXP, 0);
3528 SV * file = newSVpv(PL_origfilename, 0);
3532 sv_catpvs(prog, "/perl");
3533 sv_catpvs(file, ".perldump");
3535 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3536 /* unexec prints msg to stderr in case of failure */
3537 PerlProc_exit(status);
3540 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
3541 # elif defined(WIN32) || defined(__CYGWIN__)
3542 Perl_croak(aTHX_ "dump is not supported");
3544 ABORT(); /* for use with undump */
3549 /* initialize curinterp */
3555 # define PERLVAR(prefix,var,type)
3556 # define PERLVARA(prefix,var,n,type)
3557 # if defined(PERL_IMPLICIT_CONTEXT)
3558 # define PERLVARI(prefix,var,type,init) aTHX->prefix##var = init;
3559 # define PERLVARIC(prefix,var,type,init) aTHX->prefix##var = init;
3561 # define PERLVARI(prefix,var,type,init) PERL_GET_INTERP->var = init;
3562 # define PERLVARIC(prefix,var,type,init) PERL_GET_INTERP->var = init;
3564 # include "intrpvar.h"
3570 # define PERLVAR(prefix,var,type)
3571 # define PERLVARA(prefix,var,n,type)
3572 # define PERLVARI(prefix,var,type,init) PL_##var = init;
3573 # define PERLVARIC(prefix,var,type,init) PL_##var = init;
3574 # include "intrpvar.h"
3581 /* As these are inside a structure, PERLVARI isn't capable of initialising
3583 PL_reg_oldcurpm = PL_reg_curpm = NULL;
3584 PL_reg_poscache = PL_reg_starttry = NULL;
3588 S_init_main_stash(pTHX)
3593 PL_curstash = PL_defstash = (HV *)SvREFCNT_inc_simple_NN(newHV());
3594 /* We know that the string "main" will be in the global shared string
3595 table, so it's a small saving to use it rather than allocate another
3597 PL_curstname = newSVpvs_share("main");
3598 gv = gv_fetchpvs("main::", GV_ADD|GV_NOTQUAL, SVt_PVHV);
3599 /* If we hadn't caused another reference to "main" to be in the shared
3600 string table above, then it would be worth reordering these two,
3601 because otherwise all we do is delete "main" from it as a consequence
3602 of the SvREFCNT_dec, only to add it again with hv_name_set */
3603 SvREFCNT_dec(GvHV(gv));
3604 hv_name_set(PL_defstash, "main", 4, 0);
3605 GvHV(gv) = MUTABLE_HV(SvREFCNT_inc_simple(PL_defstash));
3607 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpvs("INC", GV_ADD|GV_NOTQUAL,
3609 SvREFCNT_inc_simple_void(PL_incgv); /* Don't allow it to be freed */
3610 GvMULTI_on(PL_incgv);
3611 PL_hintgv = gv_fetchpvs("\010", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^H */
3612 GvMULTI_on(PL_hintgv);
3613 PL_defgv = gv_fetchpvs("_", GV_ADD|GV_NOTQUAL, SVt_PVAV);
3614 SvREFCNT_inc_simple_void(PL_defgv);
3615 PL_errgv = gv_HVadd(gv_fetchpvs("@", GV_ADD|GV_NOTQUAL, SVt_PV));
3616 SvREFCNT_inc_simple_void(PL_errgv);
3617 GvMULTI_on(PL_errgv);
3618 PL_replgv = gv_fetchpvs("\022", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^R */
3619 GvMULTI_on(PL_replgv);
3620 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
3621 #ifdef PERL_DONT_CREATE_GVSV
3624 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
3626 SET_CURSTASH(PL_defstash);
3627 CopSTASH_set(&PL_compiling, PL_defstash);
3628 PL_debstash = GvHV(gv_fetchpvs("DB::", GV_ADDMULTI, SVt_PVHV));
3629 PL_globalstash = GvHV(gv_fetchpvs("CORE::GLOBAL::", GV_ADDMULTI,
3631 /* We must init $/ before switches are processed. */
3632 sv_setpvs(get_sv("/", GV_ADD), "\n");
3636 S_open_script(pTHX_ const char *scriptname, bool dosearch, bool *suidscript)
3639 PerlIO *rsfp = NULL;
3642 PERL_ARGS_ASSERT_OPEN_SCRIPT;
3645 PL_origfilename = savepvs("-e");
3648 /* if find_script() returns, it returns a malloc()-ed value */
3649 scriptname = PL_origfilename = find_script(scriptname, dosearch, NULL, 1);
3651 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
3652 const char *s = scriptname + 8;
3658 * Tell apart "normal" usage of fdscript, e.g.
3659 * with bash on FreeBSD:
3660 * perl <( echo '#!perl -DA'; echo 'print "$0\n"')
3661 * from usage in suidperl.
3662 * Does any "normal" usage leave garbage after the number???
3663 * Is it a mistake to use a similar /dev/fd/ construct for
3668 * Be supersafe and do some sanity-checks.
3669 * Still, can we be sure we got the right thing?
3672 Perl_croak(aTHX_ "Wrong syntax (suid) fd script name \"%s\"\n", s);
3675 Perl_croak(aTHX_ "Missing (suid) fd script name\n");
3677 scriptname = savepv(s + 1);
3678 Safefree(PL_origfilename);
3679 PL_origfilename = (char *)scriptname;
3684 CopFILE_free(PL_curcop);
3685 CopFILE_set(PL_curcop, PL_origfilename);
3686 if (*PL_origfilename == '-' && PL_origfilename[1] == '\0')
3687 scriptname = (char *)"";
3688 if (fdscript >= 0) {
3689 rsfp = PerlIO_fdopen(fdscript,PERL_SCRIPT_MODE);
3691 else if (!*scriptname) {
3692 forbid_setid(0, *suidscript);
3696 #ifdef FAKE_BIT_BUCKET
3697 /* This hack allows one not to have /dev/null (or BIT_BUCKET as it
3698 * is called) and still have the "-e" work. (Believe it or not,
3699 * a /dev/null is required for the "-e" to work because source
3700 * filter magic is used to implement it. ) This is *not* a general
3701 * replacement for a /dev/null. What we do here is create a temp
3702 * file (an empty file), open up that as the script, and then
3703 * immediately close and unlink it. Close enough for jazz. */
3704 #define FAKE_BIT_BUCKET_PREFIX "/tmp/perlnull-"
3705 #define FAKE_BIT_BUCKET_SUFFIX "XXXXXXXX"
3706 #define FAKE_BIT_BUCKET_TEMPLATE FAKE_BIT_BUCKET_PREFIX FAKE_BIT_BUCKET_SUFFIX
3707 char tmpname[sizeof(FAKE_BIT_BUCKET_TEMPLATE)] = {
3708 FAKE_BIT_BUCKET_TEMPLATE
3710 const char * const err = "Failed to create a fake bit bucket";
3711 if (strEQ(scriptname, BIT_BUCKET)) {
3712 #ifdef HAS_MKSTEMP /* Hopefully mkstemp() is safe here. */
3713 int tmpfd = mkstemp(tmpname);
3715 scriptname = tmpname;
3718 Perl_croak(aTHX_ err);
3721 scriptname = mktemp(tmpname);
3723 Perl_croak(aTHX_ err);
3728 rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
3729 #ifdef FAKE_BIT_BUCKET
3730 if (memEQ(scriptname, FAKE_BIT_BUCKET_PREFIX,
3731 sizeof(FAKE_BIT_BUCKET_PREFIX) - 1)
3732 && strlen(scriptname) == sizeof(tmpname) - 1) {
3735 scriptname = BIT_BUCKET;
3739 /* PSz 16 Sep 03 Keep neat error message */
3741 Perl_croak(aTHX_ "Can't open "BIT_BUCKET": %s\n", Strerror(errno));
3743 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3744 CopFILE(PL_curcop), Strerror(errno));
3746 #if defined(HAS_FCNTL) && defined(F_SETFD)
3747 /* ensure close-on-exec */
3748 fcntl(PerlIO_fileno(rsfp), F_SETFD, 1);
3754 * I_SYSSTATVFS HAS_FSTATVFS
3756 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
3757 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
3758 * here so that metaconfig picks them up. */
3761 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
3762 /* Don't even need this function. */
3765 S_validate_suid(pTHX_ PerlIO *rsfp)
3767 const UV my_uid = PerlProc_getuid();
3768 const UV my_euid = PerlProc_geteuid();
3769 const UV my_gid = PerlProc_getgid();
3770 const UV my_egid = PerlProc_getegid();
3772 PERL_ARGS_ASSERT_VALIDATE_SUID;
3774 if (my_euid != my_uid || my_egid != my_gid) { /* (suidperl doesn't exist, in fact) */
3777 PerlLIO_fstat(PerlIO_fileno(rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3778 if ((my_euid != my_uid && my_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3780 (my_egid != my_gid && my_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3783 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3784 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3785 /* not set-id, must be wrapped */
3788 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3791 S_find_beginning(pTHX_ SV* linestr_sv, PerlIO *rsfp)
3795 register const char *s2;
3797 PERL_ARGS_ASSERT_FIND_BEGINNING;
3799 /* skip forward in input to the real script? */
3802 if ((s = sv_gets(linestr_sv, rsfp, 0)) == NULL)
3803 Perl_croak(aTHX_ "No Perl script found in input\n");
3805 } while (!(*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))));
3806 PerlIO_ungetc(rsfp, '\n'); /* to keep line count right */
3807 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3809 while (*s == ' ' || *s == '\t') s++;
3811 while (isDIGIT(s2[-1]) || s2[-1] == '-' || s2[-1] == '.'
3812 || s2[-1] == '_') s2--;
3813 if (strnEQ(s2-4,"perl",4))
3814 while ((s = moreswitches(s)))
3824 const UV my_uid = PerlProc_getuid();
3825 const UV my_euid = PerlProc_geteuid();
3826 const UV my_gid = PerlProc_getgid();
3827 const UV my_egid = PerlProc_getegid();
3829 /* Should not happen: */
3830 CHECK_MALLOC_TAINT(my_uid && (my_euid != my_uid || my_egid != my_gid));
3831 PL_tainting |= (my_uid && (my_euid != my_uid || my_egid != my_gid));
3834 * Should go by suidscript, not uid!=euid: why disallow
3835 * system("ls") in scripts run from setuid things?
3836 * Or, is this run before we check arguments and set suidscript?
3837 * What about SETUID_SCRIPTS_ARE_SECURE_NOW: could we use fdscript then?
3838 * (We never have suidscript, can we be sure to have fdscript?)
3839 * Or must then go by UID checks? See comments in forbid_setid also.
3843 /* This is used very early in the lifetime of the program,
3844 * before even the options are parsed, so PL_tainting has
3845 * not been initialized properly. */
3847 Perl_doing_taint(int argc, char *argv[], char *envp[])
3849 #ifndef PERL_IMPLICIT_SYS
3850 /* If we have PERL_IMPLICIT_SYS we can't call getuid() et alia
3851 * before we have an interpreter-- and the whole point of this
3852 * function is to be called at such an early stage. If you are on
3853 * a system with PERL_IMPLICIT_SYS but you do have a concept of
3854 * "tainted because running with altered effective ids', you'll
3855 * have to add your own checks somewhere in here. The two most
3856 * known samples of 'implicitness' are Win32 and NetWare, neither
3857 * of which has much of concept of 'uids'. */
3858 int uid = PerlProc_getuid();
3859 int euid = PerlProc_geteuid();
3860 int gid = PerlProc_getgid();
3861 int egid = PerlProc_getegid();
3868 if (uid && (euid != uid || egid != gid))
3870 #endif /* !PERL_IMPLICIT_SYS */
3871 /* This is a really primitive check; environment gets ignored only
3872 * if -T are the first chars together; otherwise one gets
3873 * "Too late" message. */
3874 if ( argc > 1 && argv[1][0] == '-'
3875 && (argv[1][1] == 't' || argv[1][1] == 'T') )
3880 /* Passing the flag as a single char rather than a string is a slight space
3881 optimisation. The only message that isn't /^-.$/ is
3882 "program input from stdin", which is substituted in place of '\0', which
3883 could never be a command line flag. */
3885 S_forbid_setid(pTHX_ const char flag, const bool suidscript) /* g */
3888 char string[3] = "-x";
3889 const char *message = "program input from stdin";
3896 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
3897 if (PerlProc_getuid() != PerlProc_geteuid())
3898 Perl_croak(aTHX_ "No %s allowed while running setuid", message);
3899 if (PerlProc_getgid() != PerlProc_getegid())
3900 Perl_croak(aTHX_ "No %s allowed while running setgid", message);
3901 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3903 Perl_croak(aTHX_ "No %s allowed with (suid) fdscript", message);
3907 Perl_init_dbargs(pTHX)
3909 AV *const args = PL_dbargs = GvAV(gv_AVadd((gv_fetchpvs("DB::args",
3914 /* Someone has already created it.
3915 It might have entries, and if we just turn off AvREAL(), they will
3916 "leak" until global destruction. */
3918 if (SvTIED_mg((const SV *)args, PERL_MAGIC_tied))
3919 Perl_croak(aTHX_ "Cannot set tied @DB::args");
3921 AvREIFY_only(PL_dbargs);
3925 Perl_init_debugger(pTHX)
3928 HV * const ostash = PL_curstash;
3930 PL_curstash = (HV *)SvREFCNT_inc_simple(PL_debstash);
3932 Perl_init_dbargs(aTHX);
3933 PL_DBgv = gv_fetchpvs("DB::DB", GV_ADDMULTI, SVt_PVGV);
3934 PL_DBline = gv_fetchpvs("DB::dbline", GV_ADDMULTI, SVt_PVAV);
3935 PL_DBsub = gv_HVadd(gv_fetchpvs("DB::sub", GV_ADDMULTI, SVt_PVHV));
3936 PL_DBsingle = GvSV((gv_fetchpvs("DB::single", GV_ADDMULTI, SVt_PV)));
3937 if (!SvIOK(PL_DBsingle))
3938 sv_setiv(PL_DBsingle, 0);
3939 PL_DBtrace = GvSV((gv_fetchpvs("DB::trace", GV_ADDMULTI, SVt_PV)));
3940 if (!SvIOK(PL_DBtrace))
3941 sv_setiv(PL_DBtrace, 0);
3942 PL_DBsignal = GvSV((gv_fetchpvs("DB::signal", GV_ADDMULTI, SVt_PV)));
3943 if (!SvIOK(PL_DBsignal))
3944 sv_setiv(PL_DBsignal, 0);
3945 SvREFCNT_dec(PL_curstash);
3946 PL_curstash = ostash;
3949 #ifndef STRESS_REALLOC
3950 #define REASONABLE(size) (size)
3952 #define REASONABLE(size) (1) /* unreasonable */
3956 Perl_init_stacks(pTHX)
3959 /* start with 128-item stack and 8K cxstack */
3960 PL_curstackinfo = new_stackinfo(REASONABLE(128),
3961 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3962 PL_curstackinfo->si_type = PERLSI_MAIN;
3963 PL_curstack = PL_curstackinfo->si_stack;
3964 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
3966 PL_stack_base = AvARRAY(PL_curstack);
3967 PL_stack_sp = PL_stack_base;
3968 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
3970 Newx(PL_tmps_stack,REASONABLE(128),SV*);
3973 PL_tmps_max = REASONABLE(128);
3975 Newx(PL_markstack,REASONABLE(32),I32);
3976 PL_markstack_ptr = PL_markstack;
3977 PL_markstack_max = PL_markstack + REASONABLE(32);
3981 Newx(PL_scopestack,REASONABLE(32),I32);
3983 Newx(PL_scopestack_name,REASONABLE(32),const char*);
3985 PL_scopestack_ix = 0;
3986 PL_scopestack_max = REASONABLE(32);
3988 Newx(PL_savestack,REASONABLE(128),ANY);
3989 PL_savestack_ix = 0;
3990 PL_savestack_max = REASONABLE(128);
3999 while (PL_curstackinfo->si_next)
4000 PL_curstackinfo = PL_curstackinfo->si_next;
4001 while (PL_curstackinfo) {
4002 PERL_SI *p = PL_curstackinfo->si_prev;
4003 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
4004 Safefree(PL_curstackinfo->si_cxstack);
4005 Safefree(PL_curstackinfo);
4006 PL_curstackinfo = p;
4008 Safefree(PL_tmps_stack);
4009 Safefree(PL_markstack);
4010 Safefree(PL_scopestack);
4012 Safefree(PL_scopestack_name);
4014 Safefree(PL_savestack);
4018 Perl_populate_isa(pTHX_ const char *name, STRLEN len, ...)
4020 GV *const gv = gv_fetchpvn(name, len, GV_ADD | GV_ADDMULTI, SVt_PVAV);
4021 AV *const isa = GvAVn(gv);
4024 PERL_ARGS_ASSERT_POPULATE_ISA;
4026 if(AvFILLp(isa) != -1)
4029 /* NOTE: No support for tied ISA */
4031 va_start(args, len);
4033 const char *const parent = va_arg(args, const char*);
4038 parent_len = va_arg(args, size_t);
4040 /* Arguments are supplied with a trailing :: */
4041 assert(parent_len > 2);
4042 assert(parent[parent_len - 1] == ':');
4043 assert(parent[parent_len - 2] == ':');
4044 av_push(isa, newSVpvn(parent, parent_len - 2));
4045 (void) gv_fetchpvn(parent, parent_len, GV_ADD, SVt_PVGV);
4052 S_init_predump_symbols(pTHX)
4058 sv_setpvs(get_sv("\"", GV_ADD), " ");
4059 PL_ofsgv = (GV*)SvREFCNT_inc(gv_fetchpvs(",", GV_ADD|GV_NOTQUAL, SVt_PV));
4062 /* Historically, PVIOs were blessed into IO::Handle, unless
4063 FileHandle was loaded, in which case they were blessed into
4064 that. Action at a distance.
4065 However, if we simply bless into IO::Handle, we break code
4066 that assumes that PVIOs will have (among others) a seek
4067 method. IO::File inherits from IO::Handle and IO::Seekable,
4068 and provides the needed methods. But if we simply bless into
4069 it, then we break code that assumed that by loading
4070 IO::Handle, *it* would work.
4071 So a compromise is to set up the correct @IO::File::ISA,
4072 so that code that does C<use IO::Handle>; will still work.
4075 Perl_populate_isa(aTHX_ STR_WITH_LEN("IO::File::ISA"),
4076 STR_WITH_LEN("IO::Handle::"),
4077 STR_WITH_LEN("IO::Seekable::"),
4078 STR_WITH_LEN("Exporter::"),
4081 PL_stdingv = gv_fetchpvs("STDIN", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4082 GvMULTI_on(PL_stdingv);
4083 io = GvIOp(PL_stdingv);
4084 IoTYPE(io) = IoTYPE_RDONLY;
4085 IoIFP(io) = PerlIO_stdin();
4086 tmpgv = gv_fetchpvs("stdin", GV_ADD|GV_NOTQUAL, SVt_PV);
4088 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4090 tmpgv = gv_fetchpvs("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4093 IoTYPE(io) = IoTYPE_WRONLY;
4094 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
4096 tmpgv = gv_fetchpvs("stdout", GV_ADD|GV_NOTQUAL, SVt_PV);
4098 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4100 PL_stderrgv = gv_fetchpvs("STDERR", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4101 GvMULTI_on(PL_stderrgv);
4102 io = GvIOp(PL_stderrgv);
4103 IoTYPE(io) = IoTYPE_WRONLY;
4104 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
4105 tmpgv = gv_fetchpvs("stderr", GV_ADD|GV_NOTQUAL, SVt_PV);
4107 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4109 PL_statname = newSVpvs(""); /* last filename we did stat on */
4113 Perl_init_argv_symbols(pTHX_ register int argc, register char **argv)
4117 PERL_ARGS_ASSERT_INIT_ARGV_SYMBOLS;
4119 argc--,argv++; /* skip name of script */
4120 if (PL_doswitches) {
4121 for (; argc > 0 && **argv == '-'; argc--,argv++) {
4125 if (argv[0][1] == '-' && !argv[0][2]) {
4129 if ((s = strchr(argv[0], '='))) {
4130 const char *const start_name = argv[0] + 1;
4131 sv_setpv(GvSV(gv_fetchpvn_flags(start_name, s - start_name,
4132 TRUE, SVt_PV)), s + 1);
4135 sv_setiv(GvSV(gv_fetchpv(argv[0]+1, GV_ADD, SVt_PV)),1);
4138 if ((PL_argvgv = gv_fetchpvs("ARGV", GV_ADD|GV_NOTQUAL, SVt_PVAV))) {
4139 GvMULTI_on(PL_argvgv);
4140 (void)gv_AVadd(PL_argvgv);
4141 av_clear(GvAVn(PL_argvgv));
4142 for (; argc > 0; argc--,argv++) {
4143 SV * const sv = newSVpv(argv[0],0);
4144 av_push(GvAVn(PL_argvgv),sv);
4145 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
4146 if (PL_unicode & PERL_UNICODE_ARGV_FLAG)
4149 if (PL_unicode & PERL_UNICODE_WIDESYSCALLS_FLAG) /* Sarathy? */
4150 (void)sv_utf8_decode(sv);
4156 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
4161 PERL_ARGS_ASSERT_INIT_POSTDUMP_SYMBOLS;
4163 PL_toptarget = newSV_type(SVt_PVFM);
4164 sv_setpvs(PL_toptarget, "");
4165 PL_bodytarget = newSV_type(SVt_PVFM);
4166 sv_setpvs(PL_bodytarget, "");
4167 PL_formtarget = PL_bodytarget;
4171 init_argv_symbols(argc,argv);
4173 if ((tmpgv = gv_fetchpvs("0", GV_ADD|GV_NOTQUAL, SVt_PV))) {
4174 sv_setpv(GvSV(tmpgv),PL_origfilename);
4176 if ((PL_envgv = gv_fetchpvs("ENV", GV_ADD|GV_NOTQUAL, SVt_PVHV))) {
4178 bool env_is_not_environ;
4179 GvMULTI_on(PL_envgv);
4180 hv = GvHVn(PL_envgv);
4181 hv_magic(hv, NULL, PERL_MAGIC_env);
4183 #ifdef USE_ENVIRON_ARRAY
4184 /* Note that if the supplied env parameter is actually a copy
4185 of the global environ then it may now point to free'd memory
4186 if the environment has been modified since. To avoid this
4187 problem we treat env==NULL as meaning 'use the default'
4191 env_is_not_environ = env != environ;
4192 if (env_is_not_environ
4193 # ifdef USE_ITHREADS
4194 && PL_curinterp == aTHX
4203 for (; *env; env++) {
4206 if (!(s = strchr(old_var,'=')) || s == old_var)
4209 #if defined(MSDOS) && !defined(DJGPP)
4211 (void)strupr(old_var);
4214 sv = newSVpv(s+1, 0);
4215 (void)hv_store(hv, old_var, s - old_var, sv, 0);
4216 if (env_is_not_environ)
4220 #endif /* USE_ENVIRON_ARRAY */
4221 #endif /* !PERL_MICRO */
4225 /* touch @F array to prevent spurious warnings 20020415 MJD */
4227 (void) get_av("main::F", GV_ADD | GV_ADDMULTI);
4232 S_init_perllib(pTHX)
4236 const char *perl5lib = NULL;
4239 #if defined(WIN32) && !defined(PERL_IS_MINIPERL)
4245 perl5lib = PerlEnv_getenv("PERL5LIB");
4247 * It isn't possible to delete an environment variable with
4248 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4249 * case we treat PERL5LIB as undefined if it has a zero-length value.
4251 #if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
4252 if (perl5lib && *perl5lib != '\0')
4256 incpush_use_sep(perl5lib, 0, INCPUSH_ADD_SUB_DIRS);
4258 s = PerlEnv_getenv("PERLLIB");
4260 incpush_use_sep(s, 0, 0);
4263 /* Treat PERL5?LIB as a possible search list logical name -- the
4264 * "natural" VMS idiom for a Unix path string. We allow each
4265 * element to be a set of |-separated directories for compatibility.
4269 if (my_trnlnm("PERL5LIB",buf,0))
4271 incpush_use_sep(buf, 0, INCPUSH_ADD_SUB_DIRS);
4272 } while (my_trnlnm("PERL5LIB",buf,++idx));
4274 while (my_trnlnm("PERLLIB",buf,idx++))
4275 incpush_use_sep(buf, 0, 0);
4280 #ifndef PERL_IS_MINIPERL
4281 /* miniperl gets just -I..., the split of $ENV{PERL5LIB}, and "." in @INC
4282 (and not the architecture specific directories from $ENV{PERL5LIB}) */
4284 /* Use the ~-expanded versions of APPLLIB (undocumented),
4285 SITEARCH, SITELIB, VENDORARCH, VENDORLIB, ARCHLIB and PRIVLIB
4288 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP),
4289 INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4293 /* sitearch is always relative to sitelib on Windows for
4294 * DLL-based path intuition to work correctly */
4295 # if !defined(WIN32)
4296 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITEARCH_EXP),
4297 INCPUSH_CAN_RELOCATE);
4303 /* this picks up sitearch as well */
4304 s = win32_get_sitelib(PERL_FS_VERSION, &len);
4306 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4308 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_EXP), INCPUSH_CAN_RELOCATE);
4312 #ifdef PERL_VENDORARCH_EXP
4313 /* vendorarch is always relative to vendorlib on Windows for
4314 * DLL-based path intuition to work correctly */
4315 # if !defined(WIN32)
4316 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORARCH_EXP),
4317 INCPUSH_CAN_RELOCATE);
4321 #ifdef PERL_VENDORLIB_EXP
4323 /* this picks up vendorarch as well */
4324 s = win32_get_vendorlib(PERL_FS_VERSION, &len);
4326 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4328 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_EXP),
4329 INCPUSH_CAN_RELOCATE);
4334 S_incpush_use_sep(aTHX_ STR_WITH_LEN(ARCHLIB_EXP), INCPUSH_CAN_RELOCATE);
4338 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
4342 s = win32_get_privlib(PERL_FS_VERSION, &len);
4344 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4347 S_incpush_use_sep(aTHX_ PRIVLIB_EXP, 0, INCPUSH_CAN_RELOCATE);
4349 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PRIVLIB_EXP), INCPUSH_CAN_RELOCATE);
4353 #ifdef PERL_OTHERLIBDIRS
4354 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS),
4355 INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_NOT_BASEDIR
4356 |INCPUSH_CAN_RELOCATE);
4362 * It isn't possible to delete an environment variable with
4363 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4364 * case we treat PERL5LIB as undefined if it has a zero-length value.
4366 #if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
4367 if (perl5lib && *perl5lib != '\0')
4371 incpush_use_sep(perl5lib, 0,
4372 INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
4374 /* Treat PERL5?LIB as a possible search list logical name -- the
4375 * "natural" VMS idiom for a Unix path string. We allow each
4376 * element to be a set of |-separated directories for compatibility.
4380 if (my_trnlnm("PERL5LIB",buf,0))
4382 incpush_use_sep(buf, 0,
4383 INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
4384 } while (my_trnlnm("PERL5LIB",buf,++idx));
4388 /* Use the ~-expanded versions of APPLLIB (undocumented),
4389 SITELIB and VENDORLIB for older versions
4392 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP), INCPUSH_ADD_OLD_VERS
4393 |INCPUSH_NOT_BASEDIR|INCPUSH_CAN_RELOCATE);
4396 #if defined(SITELIB_STEM) && defined(PERL_INC_VERSION_LIST)
4397 /* Search for version-specific dirs below here */
4398 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_STEM),
4399 INCPUSH_ADD_OLD_VERS|INCPUSH_CAN_RELOCATE);
4403 #if defined(PERL_VENDORLIB_STEM) && defined(PERL_INC_VERSION_LIST)
4404 /* Search for version-specific dirs below here */
4405 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_STEM),
4406 INCPUSH_ADD_OLD_VERS|INCPUSH_CAN_RELOCATE);
4409 #ifdef PERL_OTHERLIBDIRS
4410 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS),
4411 INCPUSH_ADD_OLD_VERS|INCPUSH_ADD_ARCHONLY_SUB_DIRS
4412 |INCPUSH_CAN_RELOCATE);
4414 #endif /* !PERL_IS_MINIPERL */
4417 S_incpush(aTHX_ STR_WITH_LEN("."), 0);
4420 #if defined(DOSISH) || defined(EPOC) || defined(__SYMBIAN32__)
4421 # define PERLLIB_SEP ';'
4424 # define PERLLIB_SEP '|'
4426 # define PERLLIB_SEP ':'
4429 #ifndef PERLLIB_MANGLE
4430 # define PERLLIB_MANGLE(s,n) (s)
4433 #ifndef PERL_IS_MINIPERL
4434 /* Push a directory onto @INC if it exists.
4435 Generate a new SV if we do this, to save needing to copy the SV we push
4438 S_incpush_if_exists(pTHX_ AV *const av, SV *dir, SV *const stem)
4443 PERL_ARGS_ASSERT_INCPUSH_IF_EXISTS;
4445 if (PerlLIO_stat(SvPVX_const(dir), &tmpstatbuf) >= 0 &&
4446 S_ISDIR(tmpstatbuf.st_mode)) {
4448 dir = newSVsv(stem);
4450 /* Truncate dir back to stem. */
4451 SvCUR_set(dir, SvCUR(stem));
4458 S_mayberelocate(pTHX_ const char *const dir, STRLEN len, U32 flags)
4460 const U8 canrelocate = (U8)flags & INCPUSH_CAN_RELOCATE;
4463 PERL_ARGS_ASSERT_MAYBERELOCATE;
4467 /* I am not convinced that this is valid when PERLLIB_MANGLE is
4468 defined to so something (in os2/os2.c), but the code has been
4469 this way, ignoring any possible changed of length, since
4470 760ac839baf413929cd31cc32ffd6dba6b781a81 (5.003_02) so I'll leave
4472 libdir = newSVpvn(PERLLIB_MANGLE(dir, len), len);
4474 libdir = newSVpv(PERLLIB_MANGLE(dir, 0), 0);
4481 if ((unix = tounixspec_ts(SvPV(libdir,len),NULL)) != NULL) {
4483 while (unix[len-1] == '/') len--; /* Cosmetic */
4484 sv_usepvn(libdir,unix,len);
4487 PerlIO_printf(Perl_error_log,
4488 "Failed to unixify @INC element \"%s\"\n",
4489 SvPV_nolen_const(libdir));
4493 /* Do the if() outside the #ifdef to avoid warnings about an unused
4496 #ifdef PERL_RELOCATABLE_INC
4498 * Relocatable include entries are marked with a leading .../
4501 * 0: Remove that leading ".../"
4502 * 1: Remove trailing executable name (anything after the last '/')
4503 * from the perl path to give a perl prefix
4505 * While the @INC element starts "../" and the prefix ends with a real
4506 * directory (ie not . or ..) chop that real directory off the prefix
4507 * and the leading "../" from the @INC element. ie a logical "../"
4509 * Finally concatenate the prefix and the remainder of the @INC element
4510 * The intent is that /usr/local/bin/perl and .../../lib/perl5
4511 * generates /usr/local/lib/perl5
4513 const char *libpath = SvPVX(libdir);
4514 STRLEN libpath_len = SvCUR(libdir);
4515 if (libpath_len >= 4 && memEQ (libpath, ".../", 4)) {
4517 SV * const caret_X = get_sv("\030", 0);
4518 /* Going to use the SV just as a scratch buffer holding a C
4524 /* $^X is *the* source of taint if tainting is on, hence
4525 SvPOK() won't be true. */
4527 assert(SvPOKp(caret_X));
4528 prefix_sv = newSVpvn_flags(SvPVX(caret_X), SvCUR(caret_X),
4530 /* Firstly take off the leading .../
4531 If all else fail we'll do the paths relative to the current
4533 sv_chop(libdir, libpath + 4);
4534 /* Don't use SvPV as we're intentionally bypassing taining,
4535 mortal copies that the mg_get of tainting creates, and
4536 corruption that seems to come via the save stack.
4537 I guess that the save stack isn't correctly set up yet. */
4538 libpath = SvPVX(libdir);
4539 libpath_len = SvCUR(libdir);
4541 /* This would work more efficiently with memrchr, but as it's
4542 only a GNU extension we'd need to probe for it and
4543 implement our own. Not hard, but maybe not worth it? */
4545 prefix = SvPVX(prefix_sv);
4546 lastslash = strrchr(prefix, '/');
4548 /* First time in with the *lastslash = '\0' we just wipe off
4549 the trailing /perl from (say) /usr/foo/bin/perl
4553 while ((*lastslash = '\0'), /* Do that, come what may. */
4554 (libpath_len >= 3 && memEQ(libpath, "../", 3)
4555 && (lastslash = strrchr(prefix, '/')))) {
4556 if (lastslash[1] == '\0'
4557 || (lastslash[1] == '.'
4558 && (lastslash[2] == '/' /* ends "/." */
4559 || (lastslash[2] == '/'
4560 && lastslash[3] == '/' /* or "/.." */
4562 /* Prefix ends "/" or "/." or "/..", any of which
4563 are fishy, so don't do any more logical cleanup.
4567 /* Remove leading "../" from path */
4570 /* Next iteration round the loop removes the last
4571 directory name from prefix by writing a '\0' in
4572 the while clause. */
4574 /* prefix has been terminated with a '\0' to the correct
4575 length. libpath points somewhere into the libdir SV.
4576 We need to join the 2 with '/' and drop the result into
4578 tempsv = Perl_newSVpvf(aTHX_ "%s/%s", prefix, libpath);
4579 SvREFCNT_dec(libdir);
4580 /* And this is the new libdir. */
4583 (PerlProc_getuid() != PerlProc_geteuid() ||
4584 PerlProc_getgid() != PerlProc_getegid())) {
4585 /* Need to taint relocated paths if running set ID */
4586 SvTAINTED_on(libdir);
4589 SvREFCNT_dec(prefix_sv);
4597 S_incpush(pTHX_ const char *const dir, STRLEN len, U32 flags)
4600 #ifndef PERL_IS_MINIPERL
4601 const U8 using_sub_dirs
4602 = (U8)flags & (INCPUSH_ADD_VERSIONED_SUB_DIRS
4603 |INCPUSH_ADD_ARCHONLY_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
4604 const U8 add_versioned_sub_dirs
4605 = (U8)flags & INCPUSH_ADD_VERSIONED_SUB_DIRS;
4606 const U8 add_archonly_sub_dirs
4607 = (U8)flags & INCPUSH_ADD_ARCHONLY_SUB_DIRS;
4608 #ifdef PERL_INC_VERSION_LIST
4609 const U8 addoldvers = (U8)flags & INCPUSH_ADD_OLD_VERS;
4612 const U8 unshift = (U8)flags & INCPUSH_UNSHIFT;
4613 const U8 push_basedir = (flags & INCPUSH_NOT_BASEDIR) ? 0 : 1;
4614 AV *const inc = GvAVn(PL_incgv);
4616 PERL_ARGS_ASSERT_INCPUSH;
4619 /* Could remove this vestigial extra block, if we don't mind a lot of
4620 re-indenting diff noise. */
4622 SV *const libdir = mayberelocate(dir, len, flags);
4623 /* Change 20189146be79a0596543441fa369c6bf7f85103f, to fix RT#6665,
4624 arranged to unshift #! line -I onto the front of @INC. However,
4625 -I can add version and architecture specific libraries, and they
4626 need to go first. The old code assumed that it was always
4627 pushing. Hence to make it work, need to push the architecture
4628 (etc) libraries onto a temporary array, then "unshift" that onto
4629 the front of @INC. */
4630 #ifndef PERL_IS_MINIPERL
4631 AV *const av = (using_sub_dirs) ? (unshift ? newAV() : inc) : NULL;
4634 * BEFORE pushing libdir onto @INC we may first push version- and
4635 * archname-specific sub-directories.
4637 if (using_sub_dirs) {
4638 SV *subdir = newSVsv(libdir);
4639 #ifdef PERL_INC_VERSION_LIST
4640 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
4641 const char * const incverlist[] = { PERL_INC_VERSION_LIST };
4642 const char * const *incver;
4645 if (add_versioned_sub_dirs) {
4646 /* .../version/archname if -d .../version/archname */
4647 sv_catpvs(subdir, "/" PERL_FS_VERSION "/" ARCHNAME);
4648 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4650 /* .../version if -d .../version */
4651 sv_catpvs(subdir, "/" PERL_FS_VERSION);
4652 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4655 #ifdef PERL_INC_VERSION_LIST
4657 for (incver = incverlist; *incver; incver++) {
4658 /* .../xxx if -d .../xxx */
4659 Perl_sv_catpvf(aTHX_ subdir, "/%s", *incver);
4660 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4665 if (add_archonly_sub_dirs) {
4666 /* .../archname if -d .../archname */
4667 sv_catpvs(subdir, "/" ARCHNAME);
4668 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4672 assert (SvREFCNT(subdir) == 1);
4673 SvREFCNT_dec(subdir);
4675 #endif /* !PERL_IS_MINIPERL */
4676 /* finally add this lib directory at the end of @INC */
4678 #ifdef PERL_IS_MINIPERL
4679 const U32 extra = 0;
4681 U32 extra = av_len(av) + 1;
4683 av_unshift(inc, extra + push_basedir);
4685 av_store(inc, extra, libdir);
4686 #ifndef PERL_IS_MINIPERL
4688 /* av owns a reference, av_store() expects to be donated a
4689 reference, and av expects to be sane when it's cleared.
4690 If I wanted to be naughty and wrong, I could peek inside the
4691 implementation of av_clear(), realise that it uses
4692 SvREFCNT_dec() too, so av's array could be a run of NULLs,
4693 and so directly steal from it (with a memcpy() to inc, and
4694 then memset() to NULL them out. But people copy code from the
4695 core expecting it to be best practise, so let's use the API.
4696 Although studious readers will note that I'm not checking any
4698 av_store(inc, extra, SvREFCNT_inc(*av_fetch(av, extra, FALSE)));
4703 else if (push_basedir) {
4704 av_push(inc, libdir);
4707 if (!push_basedir) {
4708 assert (SvREFCNT(libdir) == 1);
4709 SvREFCNT_dec(libdir);
4715 S_incpush_use_sep(pTHX_ const char *p, STRLEN len, U32 flags)
4719 /* This logic has been broken out from S_incpush(). It may be possible to
4722 PERL_ARGS_ASSERT_INCPUSH_USE_SEP;
4724 /* perl compiled with -DPERL_RELOCATABLE_INCPUSH will ignore the len
4725 * argument to incpush_use_sep. This allows creation of relocatable
4726 * Perl distributions that patch the binary at install time. Those
4727 * distributions will have to provide their own relocation tools; this
4728 * is not a feature otherwise supported by core Perl.
4730 #ifndef PERL_RELOCATABLE_INCPUSH
4737 /* Break at all separators */
4738 while ((s = (const char*)memchr(p, PERLLIB_SEP, end - p))) {
4740 /* skip any consecutive separators */
4742 /* Uncomment the next line for PATH semantics */
4743 /* But you'll need to write tests */
4744 /* av_push(GvAVn(PL_incgv), newSVpvs(".")); */
4746 incpush(p, (STRLEN)(s - p), flags);
4751 incpush(p, (STRLEN)(end - p), flags);
4756 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
4760 volatile const line_t oldline = PL_curcop ? CopLINE(PL_curcop) : 0;
4766 PERL_ARGS_ASSERT_CALL_LIST;
4768 while (av_len(paramList) >= 0) {
4769 cv = MUTABLE_CV(av_shift(paramList));
4771 if (paramList == PL_beginav) {
4772 /* save PL_beginav for compiler */
4773 Perl_av_create_and_push(aTHX_ &PL_beginav_save, MUTABLE_SV(cv));
4775 else if (paramList == PL_checkav) {
4776 /* save PL_checkav for compiler */
4777 Perl_av_create_and_push(aTHX_ &PL_checkav_save, MUTABLE_SV(cv));
4779 else if (paramList == PL_unitcheckav) {
4780 /* save PL_unitcheckav for compiler */
4781 Perl_av_create_and_push(aTHX_ &PL_unitcheckav_save, MUTABLE_SV(cv));
4792 PL_madskills |= 16384;
4797 PL_madskills &= ~16384;
4800 (void)SvPV_const(atsv, len);
4802 PL_curcop = &PL_compiling;
4803 CopLINE_set(PL_curcop, oldline);
4804 if (paramList == PL_beginav)
4805 sv_catpvs(atsv, "BEGIN failed--compilation aborted");
4807 Perl_sv_catpvf(aTHX_ atsv,
4808 "%s failed--call queue aborted",
4809 paramList == PL_checkav ? "CHECK"
4810 : paramList == PL_initav ? "INIT"
4811 : paramList == PL_unitcheckav ? "UNITCHECK"
4813 while (PL_scopestack_ix > oldscope)
4816 Perl_croak(aTHX_ "%"SVf"", SVfARG(atsv));
4823 /* my_exit() was called */
4824 while (PL_scopestack_ix > oldscope)
4827 SET_CURSTASH(PL_defstash);
4828 PL_curcop = &PL_compiling;
4829 CopLINE_set(PL_curcop, oldline);
4832 assert(0); /* NOTREACHED */
4835 PL_curcop = &PL_compiling;
4836 CopLINE_set(PL_curcop, oldline);
4839 PerlIO_printf(Perl_error_log, "panic: restartop in call_list\n");
4848 Perl_my_exit(pTHX_ U32 status)
4859 STATUS_EXIT_SET(status);
4866 Perl_my_failure_exit(pTHX)
4870 /* We have been called to fall on our sword. The desired exit code
4871 * should be already set in STATUS_UNIX, but could be shifted over
4872 * by 8 bits. STATUS_UNIX_EXIT_SET will handle the cases where a
4875 * If an error code has not been set, then force the issue.
4877 if (MY_POSIX_EXIT) {
4879 /* According to the die_exit.t tests, if errno is non-zero */
4880 /* It should be used for the error status. */
4882 if (errno == EVMSERR) {
4883 STATUS_NATIVE = vaxc$errno;
4886 /* According to die_exit.t tests, if the child_exit code is */
4887 /* also zero, then we need to exit with a code of 255 */
4888 if ((errno != 0) && (errno < 256))
4889 STATUS_UNIX_EXIT_SET(errno);
4890 else if (STATUS_UNIX < 255) {
4891 STATUS_UNIX_EXIT_SET(255);
4896 /* The exit code could have been set by $? or vmsish which
4897 * means that it may not have fatal set. So convert
4898 * success/warning codes to fatal with out changing
4899 * the POSIX status code. The severity makes VMS native
4900 * status handling work, while UNIX mode programs use the
4901 * the POSIX exit codes.
4903 if ((STATUS_NATIVE & (STS$K_SEVERE|STS$K_ERROR)) == 0) {
4904 STATUS_NATIVE &= STS$M_COND_ID;
4905 STATUS_NATIVE |= STS$K_ERROR | STS$M_INHIB_MSG;
4909 /* Traditionally Perl on VMS always expects a Fatal Error. */
4910 if (vaxc$errno & 1) {
4912 /* So force success status to failure */
4913 if (STATUS_NATIVE & 1)
4918 STATUS_UNIX = EINTR; /* In case something cares */
4923 STATUS_NATIVE = vaxc$errno; /* Should already be this */
4925 /* Encode the severity code */
4926 severity = STATUS_NATIVE & STS$M_SEVERITY;
4927 STATUS_UNIX = (severity ? severity : 1) << 8;
4929 /* Perl expects this to be a fatal error */
4930 if (severity != STS$K_SEVERE)
4939 STATUS_UNIX_SET(errno);
4941 exitstatus = STATUS_UNIX >> 8;
4942 if (exitstatus & 255)
4943 STATUS_UNIX_SET(exitstatus);
4945 STATUS_UNIX_SET(255);
4952 S_my_exit_jump(pTHX)
4957 SvREFCNT_dec(PL_e_script);
4961 POPSTACK_TO(PL_mainstack);
4969 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen)
4972 const char * const p = SvPVX_const(PL_e_script);
4973 const char *nl = strchr(p, '\n');
4975 PERL_UNUSED_ARG(idx);
4976 PERL_UNUSED_ARG(maxlen);
4978 nl = (nl) ? nl+1 : SvEND(PL_e_script);
4980 filter_del(read_e_script);
4983 sv_catpvn(buf_sv, p, nl-p);
4984 sv_chop(PL_e_script, nl);
4990 * c-indentation-style: bsd
4992 * indent-tabs-mode: nil
4995 * ex: set ts=8 sts=4 sw=4 et: